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0a827ebd2f
This patch is to upgrade kernel to 4.14 for layerscape. patches-4.14 for layerscape included two categories. - NXP Layerscape SDK kernel-4.14 patches All patches on tag LSDK-18.09-V4.14 were ported to OpenWrt kernel. Since there were hundreds patches, we had to make an all-in-one patch for each IP/feature. See below links for LSDK kernel. https://lsdk.github.io/components.html https://source.codeaurora.org/external/qoriq/qoriq-components/linux - Non-LSDK kernel patches Other patches which were not in LSDK were just put in patches-4.14. Kept below patches from patches-4.9. 303-dts-layerscape-add-traverse-ls1043.patch 821-add-esdhc-vsel-to-ls1043.patch 822-rgmii-fixed-link.patch Renamed and rebase them as below in patches-4.14, 303-add-DTS-for-Traverse-LS1043-Boards.patch 712-sdk-dpaa-rgmii-fixed-link.patch 824-mmc-sdhci-of-esdhc-add-voltage-switch-support-for-ls.patch Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com> Signed-off-by: Biwen Li <biwen.li@nxp.com>
12063 lines
319 KiB
Diff
12063 lines
319 KiB
Diff
From 2aaf8e8caef3ec4c2c155421f62f983892c49387 Mon Sep 17 00:00:00 2001
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From: Biwen Li <biwen.li@nxp.com>
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Date: Fri, 16 Nov 2018 12:20:04 +0800
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Subject: [PATCH 13/39] mc-bus: support layerscape
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This is an integrated patch of mc-bus for layerscape
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Signed-off-by: Bharat Bhushan <Bharat.Bhushan@nxp.com>
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Signed-off-by: Bogdan Purcareata <bogdan.purcareata@nxp.com>
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Signed-off-by: Cristian Sovaiala <cristian.sovaiala@freescale.com>
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Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Signed-off-by: Guanhua Gao <guanhua.gao@nxp.com>
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Signed-off-by: Horia Geantă <horia.geanta@nxp.com>
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Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
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Signed-off-by: Ioana Radulescu <ruxandra.radulescu@nxp.com>
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Signed-off-by: J. German Rivera <German.Rivera@freescale.com>
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Signed-off-by: Laurentiu Tudor <laurentiu.tudor@nxp.com>
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Signed-off-by: Lijun Pan <Lijun.Pan@freescale.com>
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Signed-off-by: Nipun Gupta <nipun.gupta@nxp.com>
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Signed-off-by: Radu Alexe <radu.alexe@nxp.com>
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Signed-off-by: Razvan Stefanescu <razvan.stefanescu@nxp.com>
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Signed-off-by: Stuart Yoder <stuart.yoder@nxp.com>
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Signed-off-by: Stuart Yoder <stuyoder@gmail.com>
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Signed-off-by: Biwen Li <biwen.li@nxp.com>
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---
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drivers/bus/Kconfig | 2 +
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drivers/bus/Makefile | 4 +
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drivers/bus/fsl-mc/Kconfig | 23 +
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drivers/bus/fsl-mc/Makefile | 21 +
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.../{staging/fsl-mc/bus => bus/fsl-mc}/dpbp.c | 97 +-
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.../fsl-mc/bus => bus/fsl-mc}/dpcon.c | 103 +-
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drivers/bus/fsl-mc/dpmcp.c | 99 ++
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.../fsl-mc/bus => bus/fsl-mc}/dprc-driver.c | 96 +-
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.../{staging/fsl-mc/bus => bus/fsl-mc}/dprc.c | 288 +----
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.../bus => bus/fsl-mc}/fsl-mc-allocator.c | 112 +-
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.../fsl-mc/bus => bus/fsl-mc}/fsl-mc-bus.c | 305 ++++-
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.../fsl-mc/bus => bus/fsl-mc}/fsl-mc-msi.c | 16 +-
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drivers/bus/fsl-mc/fsl-mc-private.h | 223 ++++
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drivers/bus/fsl-mc/fsl-mc-restool.c | 219 ++++
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.../fsl-mc/bus => bus/fsl-mc}/mc-io.c | 36 +-
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.../fsl-mc/bus => bus/fsl-mc}/mc-sys.c | 33 +-
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drivers/irqchip/Kconfig | 6 +
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drivers/irqchip/Makefile | 1 +
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drivers/irqchip/irq-gic-v3-its-fsl-mc-msi.c | 98 ++
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drivers/staging/fsl-dpaa2/ethernet/README | 2 +-
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.../staging/fsl-dpaa2/ethernet/dpaa2-eth.c | 2 +-
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.../staging/fsl-dpaa2/ethernet/dpaa2-eth.h | 3 +-
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drivers/staging/fsl-dpaa2/ethernet/dpni.c | 2 +-
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drivers/staging/fsl-mc/TODO | 18 -
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drivers/staging/fsl-mc/bus/Kconfig | 16 +-
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drivers/staging/fsl-mc/bus/Makefile | 13 -
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drivers/staging/fsl-mc/bus/dpio/dpio-driver.c | 2 +-
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.../staging/fsl-mc/bus/dpio/dpio-service.c | 2 +-
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drivers/staging/fsl-mc/bus/dpio/dpio.c | 14 +-
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drivers/staging/fsl-mc/bus/dpmcp-cmd.h | 56 -
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drivers/staging/fsl-mc/bus/dpmcp.h | 60 -
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drivers/staging/fsl-mc/bus/dpmng-cmd.h | 58 -
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drivers/staging/fsl-mc/bus/dprc-cmd.h | 451 --------
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drivers/staging/fsl-mc/bus/dprc.h | 268 -----
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.../fsl-mc/bus/irq-gic-v3-its-fsl-mc-msi.c | 1 +
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include/linux/fsl/mc.h | 1020 +++++++++++++++++
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include/uapi/linux/fsl_mc.h | 31 +
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37 files changed, 2255 insertions(+), 1546 deletions(-)
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create mode 100644 drivers/bus/fsl-mc/Kconfig
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create mode 100644 drivers/bus/fsl-mc/Makefile
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rename drivers/{staging/fsl-mc/bus => bus/fsl-mc}/dpbp.c (67%)
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rename drivers/{staging/fsl-mc/bus => bus/fsl-mc}/dpcon.c (70%)
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create mode 100644 drivers/bus/fsl-mc/dpmcp.c
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rename drivers/{staging/fsl-mc/bus => bus/fsl-mc}/dprc-driver.c (93%)
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rename drivers/{staging/fsl-mc/bus => bus/fsl-mc}/dprc.c (68%)
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rename drivers/{staging/fsl-mc/bus => bus/fsl-mc}/fsl-mc-allocator.c (84%)
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rename drivers/{staging/fsl-mc/bus => bus/fsl-mc}/fsl-mc-bus.c (76%)
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rename drivers/{staging/fsl-mc/bus => bus/fsl-mc}/fsl-mc-msi.c (96%)
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create mode 100644 drivers/bus/fsl-mc/fsl-mc-private.h
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create mode 100644 drivers/bus/fsl-mc/fsl-mc-restool.c
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rename drivers/{staging/fsl-mc/bus => bus/fsl-mc}/mc-io.c (89%)
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rename drivers/{staging/fsl-mc/bus => bus/fsl-mc}/mc-sys.c (90%)
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create mode 100644 drivers/irqchip/irq-gic-v3-its-fsl-mc-msi.c
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delete mode 100644 drivers/staging/fsl-mc/TODO
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delete mode 100644 drivers/staging/fsl-mc/bus/dpmcp-cmd.h
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delete mode 100644 drivers/staging/fsl-mc/bus/dpmcp.h
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delete mode 100644 drivers/staging/fsl-mc/bus/dpmng-cmd.h
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delete mode 100644 drivers/staging/fsl-mc/bus/dprc-cmd.h
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delete mode 100644 drivers/staging/fsl-mc/bus/dprc.h
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create mode 100644 include/linux/fsl/mc.h
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create mode 100644 include/uapi/linux/fsl_mc.h
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--- a/drivers/bus/Kconfig
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+++ b/drivers/bus/Kconfig
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@@ -184,4 +184,6 @@ config DA8XX_MSTPRI
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configuration. Allows to adjust the priorities of all master
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peripherals.
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+source "drivers/bus/fsl-mc/Kconfig"
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+
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endmenu
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--- a/drivers/bus/Makefile
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+++ b/drivers/bus/Makefile
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@@ -8,6 +8,10 @@ obj-$(CONFIG_ARM_CCI) += arm-cci.o
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obj-$(CONFIG_ARM_CCN) += arm-ccn.o
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obj-$(CONFIG_BRCMSTB_GISB_ARB) += brcmstb_gisb.o
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+
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+# DPAA2 fsl-mc bus
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+obj-$(CONFIG_FSL_MC_BUS) += fsl-mc/
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+
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obj-$(CONFIG_IMX_WEIM) += imx-weim.o
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obj-$(CONFIG_MIPS_CDMM) += mips_cdmm.o
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obj-$(CONFIG_MVEBU_MBUS) += mvebu-mbus.o
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--- /dev/null
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+++ b/drivers/bus/fsl-mc/Kconfig
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@@ -0,0 +1,23 @@
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+# SPDX-License-Identifier: GPL-2.0
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+#
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+# DPAA2 fsl-mc bus
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+#
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+# Copyright (C) 2014-2016 Freescale Semiconductor, Inc.
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+#
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+
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+config FSL_MC_BUS
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+ bool "QorIQ DPAA2 fsl-mc bus driver"
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+ depends on OF && (ARCH_LAYERSCAPE || (COMPILE_TEST && (ARM || ARM64 || X86 || PPC)))
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+ select GENERIC_MSI_IRQ_DOMAIN
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+ help
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+ Driver to enable the bus infrastructure for the QorIQ DPAA2
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+ architecture. The fsl-mc bus driver handles discovery of
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+ DPAA2 objects (which are represented as Linux devices) and
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+ binding objects to drivers.
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+
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+config FSL_MC_RESTOOL
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+ bool "Management Complex (MC) restool support"
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+ depends on FSL_MC_BUS
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+ help
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+ Provides kernel support for the Management Complex resource
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+ manager user-space tool - restool.
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--- /dev/null
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+++ b/drivers/bus/fsl-mc/Makefile
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@@ -0,0 +1,21 @@
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+# SPDX-License-Identifier: GPL-2.0
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+#
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+# Freescale Management Complex (MC) bus drivers
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+#
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+# Copyright (C) 2014 Freescale Semiconductor, Inc.
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+#
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+obj-$(CONFIG_FSL_MC_BUS) += mc-bus-driver.o
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+
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+mc-bus-driver-objs := fsl-mc-bus.o \
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+ mc-sys.o \
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+ mc-io.o \
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+ dpbp.o \
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+ dpcon.o \
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+ dprc.o \
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+ dprc-driver.o \
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+ fsl-mc-allocator.o \
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+ fsl-mc-msi.o \
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+ dpmcp.o
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+
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+# MC restool kernel support
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+obj-$(CONFIG_FSL_MC_RESTOOL) += fsl-mc-restool.o
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--- a/drivers/staging/fsl-mc/bus/dpbp.c
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+++ /dev/null
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@@ -1,253 +0,0 @@
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-// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
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-/*
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- * Copyright 2013-2016 Freescale Semiconductor Inc.
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- *
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- */
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-#include <linux/kernel.h>
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-#include "../include/mc.h"
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-#include "../include/dpbp.h"
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-
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-#include "dpbp-cmd.h"
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-
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-/**
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- * dpbp_open() - Open a control session for the specified object.
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- * @mc_io: Pointer to MC portal's I/O object
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- * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
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- * @dpbp_id: DPBP unique ID
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- * @token: Returned token; use in subsequent API calls
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- *
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- * This function can be used to open a control session for an
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- * already created object; an object may have been declared in
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- * the DPL or by calling the dpbp_create function.
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- * This function returns a unique authentication token,
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- * associated with the specific object ID and the specific MC
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- * portal; this token must be used in all subsequent commands for
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- * this specific object
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- *
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- * Return: '0' on Success; Error code otherwise.
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- */
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-int dpbp_open(struct fsl_mc_io *mc_io,
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- u32 cmd_flags,
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- int dpbp_id,
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- u16 *token)
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-{
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- struct mc_command cmd = { 0 };
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- struct dpbp_cmd_open *cmd_params;
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- int err;
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-
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- /* prepare command */
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- cmd.header = mc_encode_cmd_header(DPBP_CMDID_OPEN,
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- cmd_flags, 0);
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- cmd_params = (struct dpbp_cmd_open *)cmd.params;
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- cmd_params->dpbp_id = cpu_to_le32(dpbp_id);
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-
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- /* send command to mc*/
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- err = mc_send_command(mc_io, &cmd);
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- if (err)
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- return err;
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-
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- /* retrieve response parameters */
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- *token = mc_cmd_hdr_read_token(&cmd);
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-
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- return err;
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-}
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-EXPORT_SYMBOL(dpbp_open);
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-
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-/**
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- * dpbp_close() - Close the control session of the object
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- * @mc_io: Pointer to MC portal's I/O object
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- * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
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- * @token: Token of DPBP object
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- *
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- * After this function is called, no further operations are
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- * allowed on the object without opening a new control session.
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- *
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- * Return: '0' on Success; Error code otherwise.
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- */
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-int dpbp_close(struct fsl_mc_io *mc_io,
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- u32 cmd_flags,
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- u16 token)
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-{
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- struct mc_command cmd = { 0 };
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-
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- /* prepare command */
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- cmd.header = mc_encode_cmd_header(DPBP_CMDID_CLOSE, cmd_flags,
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- token);
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-
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- /* send command to mc*/
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- return mc_send_command(mc_io, &cmd);
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-}
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-EXPORT_SYMBOL(dpbp_close);
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-
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-/**
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- * dpbp_enable() - Enable the DPBP.
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- * @mc_io: Pointer to MC portal's I/O object
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- * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
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- * @token: Token of DPBP object
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- *
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- * Return: '0' on Success; Error code otherwise.
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- */
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-int dpbp_enable(struct fsl_mc_io *mc_io,
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- u32 cmd_flags,
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- u16 token)
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-{
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- struct mc_command cmd = { 0 };
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-
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- /* prepare command */
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- cmd.header = mc_encode_cmd_header(DPBP_CMDID_ENABLE, cmd_flags,
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- token);
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-
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- /* send command to mc*/
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- return mc_send_command(mc_io, &cmd);
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-}
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-EXPORT_SYMBOL(dpbp_enable);
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-
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-/**
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- * dpbp_disable() - Disable the DPBP.
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- * @mc_io: Pointer to MC portal's I/O object
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- * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
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- * @token: Token of DPBP object
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- *
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- * Return: '0' on Success; Error code otherwise.
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- */
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-int dpbp_disable(struct fsl_mc_io *mc_io,
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- u32 cmd_flags,
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- u16 token)
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-{
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- struct mc_command cmd = { 0 };
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-
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- /* prepare command */
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- cmd.header = mc_encode_cmd_header(DPBP_CMDID_DISABLE,
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- cmd_flags, token);
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-
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- /* send command to mc*/
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- return mc_send_command(mc_io, &cmd);
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-}
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-EXPORT_SYMBOL(dpbp_disable);
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-
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-/**
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- * dpbp_is_enabled() - Check if the DPBP is enabled.
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- * @mc_io: Pointer to MC portal's I/O object
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- * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
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- * @token: Token of DPBP object
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- * @en: Returns '1' if object is enabled; '0' otherwise
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- *
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- * Return: '0' on Success; Error code otherwise.
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- */
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-int dpbp_is_enabled(struct fsl_mc_io *mc_io,
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- u32 cmd_flags,
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- u16 token,
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- int *en)
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-{
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- struct mc_command cmd = { 0 };
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- struct dpbp_rsp_is_enabled *rsp_params;
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- int err;
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- /* prepare command */
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- cmd.header = mc_encode_cmd_header(DPBP_CMDID_IS_ENABLED, cmd_flags,
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- token);
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-
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- /* send command to mc*/
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- err = mc_send_command(mc_io, &cmd);
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- if (err)
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- return err;
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-
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- /* retrieve response parameters */
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- rsp_params = (struct dpbp_rsp_is_enabled *)cmd.params;
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- *en = rsp_params->enabled & DPBP_ENABLE;
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-
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- return 0;
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-}
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-EXPORT_SYMBOL(dpbp_is_enabled);
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-
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-/**
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- * dpbp_reset() - Reset the DPBP, returns the object to initial state.
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- * @mc_io: Pointer to MC portal's I/O object
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- * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
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- * @token: Token of DPBP object
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- *
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- * Return: '0' on Success; Error code otherwise.
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- */
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-int dpbp_reset(struct fsl_mc_io *mc_io,
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- u32 cmd_flags,
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- u16 token)
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-{
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- struct mc_command cmd = { 0 };
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-
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- /* prepare command */
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- cmd.header = mc_encode_cmd_header(DPBP_CMDID_RESET,
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- cmd_flags, token);
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-
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- /* send command to mc*/
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- return mc_send_command(mc_io, &cmd);
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-}
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-EXPORT_SYMBOL(dpbp_reset);
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-
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-/**
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- * dpbp_get_attributes - Retrieve DPBP attributes.
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- *
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- * @mc_io: Pointer to MC portal's I/O object
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- * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
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- * @token: Token of DPBP object
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- * @attr: Returned object's attributes
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- *
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- * Return: '0' on Success; Error code otherwise.
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- */
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-int dpbp_get_attributes(struct fsl_mc_io *mc_io,
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- u32 cmd_flags,
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- u16 token,
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- struct dpbp_attr *attr)
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-{
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- struct mc_command cmd = { 0 };
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- struct dpbp_rsp_get_attributes *rsp_params;
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- int err;
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-
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- /* prepare command */
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- cmd.header = mc_encode_cmd_header(DPBP_CMDID_GET_ATTR,
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- cmd_flags, token);
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-
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- /* send command to mc*/
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- err = mc_send_command(mc_io, &cmd);
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- if (err)
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- return err;
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-
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- /* retrieve response parameters */
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- rsp_params = (struct dpbp_rsp_get_attributes *)cmd.params;
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- attr->bpid = le16_to_cpu(rsp_params->bpid);
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- attr->id = le32_to_cpu(rsp_params->id);
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-
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- return 0;
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-}
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-EXPORT_SYMBOL(dpbp_get_attributes);
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-
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-/**
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- * dpbp_get_api_version - Get Data Path Buffer Pool API version
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- * @mc_io: Pointer to Mc portal's I/O object
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- * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
|
|
- * @major_ver: Major version of Buffer Pool API
|
|
- * @minor_ver: Minor version of Buffer Pool API
|
|
- *
|
|
- * Return: '0' on Success; Error code otherwise.
|
|
- */
|
|
-int dpbp_get_api_version(struct fsl_mc_io *mc_io,
|
|
- u32 cmd_flags,
|
|
- u16 *major_ver,
|
|
- u16 *minor_ver)
|
|
-{
|
|
- struct mc_command cmd = { 0 };
|
|
- int err;
|
|
-
|
|
- /* prepare command */
|
|
- cmd.header = mc_encode_cmd_header(DPBP_CMDID_GET_API_VERSION,
|
|
- cmd_flags, 0);
|
|
-
|
|
- /* send command to mc */
|
|
- err = mc_send_command(mc_io, &cmd);
|
|
- if (err)
|
|
- return err;
|
|
-
|
|
- /* retrieve response parameters */
|
|
- mc_cmd_read_api_version(&cmd, major_ver, minor_ver);
|
|
-
|
|
- return 0;
|
|
-}
|
|
-EXPORT_SYMBOL(dpbp_get_api_version);
|
|
--- /dev/null
|
|
+++ b/drivers/bus/fsl-mc/dpbp.c
|
|
@@ -0,0 +1,186 @@
|
|
+// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
|
|
+/*
|
|
+ * Copyright 2013-2016 Freescale Semiconductor Inc.
|
|
+ *
|
|
+ */
|
|
+#include <linux/kernel.h>
|
|
+#include <linux/fsl/mc.h>
|
|
+#include <linux/fsl/mc.h>
|
|
+
|
|
+#include "fsl-mc-private.h"
|
|
+
|
|
+/**
|
|
+ * dpbp_open() - Open a control session for the specified object.
|
|
+ * @mc_io: Pointer to MC portal's I/O object
|
|
+ * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
|
|
+ * @dpbp_id: DPBP unique ID
|
|
+ * @token: Returned token; use in subsequent API calls
|
|
+ *
|
|
+ * This function can be used to open a control session for an
|
|
+ * already created object; an object may have been declared in
|
|
+ * the DPL or by calling the dpbp_create function.
|
|
+ * This function returns a unique authentication token,
|
|
+ * associated with the specific object ID and the specific MC
|
|
+ * portal; this token must be used in all subsequent commands for
|
|
+ * this specific object
|
|
+ *
|
|
+ * Return: '0' on Success; Error code otherwise.
|
|
+ */
|
|
+int dpbp_open(struct fsl_mc_io *mc_io,
|
|
+ u32 cmd_flags,
|
|
+ int dpbp_id,
|
|
+ u16 *token)
|
|
+{
|
|
+ struct fsl_mc_command cmd = { 0 };
|
|
+ struct dpbp_cmd_open *cmd_params;
|
|
+ int err;
|
|
+
|
|
+ /* prepare command */
|
|
+ cmd.header = mc_encode_cmd_header(DPBP_CMDID_OPEN,
|
|
+ cmd_flags, 0);
|
|
+ cmd_params = (struct dpbp_cmd_open *)cmd.params;
|
|
+ cmd_params->dpbp_id = cpu_to_le32(dpbp_id);
|
|
+
|
|
+ /* send command to mc*/
|
|
+ err = mc_send_command(mc_io, &cmd);
|
|
+ if (err)
|
|
+ return err;
|
|
+
|
|
+ /* retrieve response parameters */
|
|
+ *token = mc_cmd_hdr_read_token(&cmd);
|
|
+
|
|
+ return err;
|
|
+}
|
|
+EXPORT_SYMBOL_GPL(dpbp_open);
|
|
+
|
|
+/**
|
|
+ * dpbp_close() - Close the control session of the object
|
|
+ * @mc_io: Pointer to MC portal's I/O object
|
|
+ * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
|
|
+ * @token: Token of DPBP object
|
|
+ *
|
|
+ * After this function is called, no further operations are
|
|
+ * allowed on the object without opening a new control session.
|
|
+ *
|
|
+ * Return: '0' on Success; Error code otherwise.
|
|
+ */
|
|
+int dpbp_close(struct fsl_mc_io *mc_io,
|
|
+ u32 cmd_flags,
|
|
+ u16 token)
|
|
+{
|
|
+ struct fsl_mc_command cmd = { 0 };
|
|
+
|
|
+ /* prepare command */
|
|
+ cmd.header = mc_encode_cmd_header(DPBP_CMDID_CLOSE, cmd_flags,
|
|
+ token);
|
|
+
|
|
+ /* send command to mc*/
|
|
+ return mc_send_command(mc_io, &cmd);
|
|
+}
|
|
+EXPORT_SYMBOL_GPL(dpbp_close);
|
|
+
|
|
+/**
|
|
+ * dpbp_enable() - Enable the DPBP.
|
|
+ * @mc_io: Pointer to MC portal's I/O object
|
|
+ * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
|
|
+ * @token: Token of DPBP object
|
|
+ *
|
|
+ * Return: '0' on Success; Error code otherwise.
|
|
+ */
|
|
+int dpbp_enable(struct fsl_mc_io *mc_io,
|
|
+ u32 cmd_flags,
|
|
+ u16 token)
|
|
+{
|
|
+ struct fsl_mc_command cmd = { 0 };
|
|
+
|
|
+ /* prepare command */
|
|
+ cmd.header = mc_encode_cmd_header(DPBP_CMDID_ENABLE, cmd_flags,
|
|
+ token);
|
|
+
|
|
+ /* send command to mc*/
|
|
+ return mc_send_command(mc_io, &cmd);
|
|
+}
|
|
+EXPORT_SYMBOL_GPL(dpbp_enable);
|
|
+
|
|
+/**
|
|
+ * dpbp_disable() - Disable the DPBP.
|
|
+ * @mc_io: Pointer to MC portal's I/O object
|
|
+ * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
|
|
+ * @token: Token of DPBP object
|
|
+ *
|
|
+ * Return: '0' on Success; Error code otherwise.
|
|
+ */
|
|
+int dpbp_disable(struct fsl_mc_io *mc_io,
|
|
+ u32 cmd_flags,
|
|
+ u16 token)
|
|
+{
|
|
+ struct fsl_mc_command cmd = { 0 };
|
|
+
|
|
+ /* prepare command */
|
|
+ cmd.header = mc_encode_cmd_header(DPBP_CMDID_DISABLE,
|
|
+ cmd_flags, token);
|
|
+
|
|
+ /* send command to mc*/
|
|
+ return mc_send_command(mc_io, &cmd);
|
|
+}
|
|
+EXPORT_SYMBOL_GPL(dpbp_disable);
|
|
+
|
|
+/**
|
|
+ * dpbp_reset() - Reset the DPBP, returns the object to initial state.
|
|
+ * @mc_io: Pointer to MC portal's I/O object
|
|
+ * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
|
|
+ * @token: Token of DPBP object
|
|
+ *
|
|
+ * Return: '0' on Success; Error code otherwise.
|
|
+ */
|
|
+int dpbp_reset(struct fsl_mc_io *mc_io,
|
|
+ u32 cmd_flags,
|
|
+ u16 token)
|
|
+{
|
|
+ struct fsl_mc_command cmd = { 0 };
|
|
+
|
|
+ /* prepare command */
|
|
+ cmd.header = mc_encode_cmd_header(DPBP_CMDID_RESET,
|
|
+ cmd_flags, token);
|
|
+
|
|
+ /* send command to mc*/
|
|
+ return mc_send_command(mc_io, &cmd);
|
|
+}
|
|
+EXPORT_SYMBOL_GPL(dpbp_reset);
|
|
+
|
|
+/**
|
|
+ * dpbp_get_attributes - Retrieve DPBP attributes.
|
|
+ *
|
|
+ * @mc_io: Pointer to MC portal's I/O object
|
|
+ * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
|
|
+ * @token: Token of DPBP object
|
|
+ * @attr: Returned object's attributes
|
|
+ *
|
|
+ * Return: '0' on Success; Error code otherwise.
|
|
+ */
|
|
+int dpbp_get_attributes(struct fsl_mc_io *mc_io,
|
|
+ u32 cmd_flags,
|
|
+ u16 token,
|
|
+ struct dpbp_attr *attr)
|
|
+{
|
|
+ struct fsl_mc_command cmd = { 0 };
|
|
+ struct dpbp_rsp_get_attributes *rsp_params;
|
|
+ int err;
|
|
+
|
|
+ /* prepare command */
|
|
+ cmd.header = mc_encode_cmd_header(DPBP_CMDID_GET_ATTR,
|
|
+ cmd_flags, token);
|
|
+
|
|
+ /* send command to mc*/
|
|
+ err = mc_send_command(mc_io, &cmd);
|
|
+ if (err)
|
|
+ return err;
|
|
+
|
|
+ /* retrieve response parameters */
|
|
+ rsp_params = (struct dpbp_rsp_get_attributes *)cmd.params;
|
|
+ attr->bpid = le16_to_cpu(rsp_params->bpid);
|
|
+ attr->id = le32_to_cpu(rsp_params->id);
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+EXPORT_SYMBOL_GPL(dpbp_get_attributes);
|
|
--- a/drivers/staging/fsl-mc/bus/dpcon.c
|
|
+++ /dev/null
|
|
@@ -1,291 +0,0 @@
|
|
-// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
|
|
-/*
|
|
- * Copyright 2013-2016 Freescale Semiconductor Inc.
|
|
- *
|
|
- */
|
|
-#include <linux/kernel.h>
|
|
-#include "../include/mc.h"
|
|
-#include "../include/dpcon.h"
|
|
-
|
|
-#include "dpcon-cmd.h"
|
|
-
|
|
-/**
|
|
- * dpcon_open() - Open a control session for the specified object
|
|
- * @mc_io: Pointer to MC portal's I/O object
|
|
- * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
|
|
- * @dpcon_id: DPCON unique ID
|
|
- * @token: Returned token; use in subsequent API calls
|
|
- *
|
|
- * This function can be used to open a control session for an
|
|
- * already created object; an object may have been declared in
|
|
- * the DPL or by calling the dpcon_create() function.
|
|
- * This function returns a unique authentication token,
|
|
- * associated with the specific object ID and the specific MC
|
|
- * portal; this token must be used in all subsequent commands for
|
|
- * this specific object.
|
|
- *
|
|
- * Return: '0' on Success; Error code otherwise.
|
|
- */
|
|
-int dpcon_open(struct fsl_mc_io *mc_io,
|
|
- u32 cmd_flags,
|
|
- int dpcon_id,
|
|
- u16 *token)
|
|
-{
|
|
- struct mc_command cmd = { 0 };
|
|
- struct dpcon_cmd_open *dpcon_cmd;
|
|
- int err;
|
|
-
|
|
- /* prepare command */
|
|
- cmd.header = mc_encode_cmd_header(DPCON_CMDID_OPEN,
|
|
- cmd_flags,
|
|
- 0);
|
|
- dpcon_cmd = (struct dpcon_cmd_open *)cmd.params;
|
|
- dpcon_cmd->dpcon_id = cpu_to_le32(dpcon_id);
|
|
-
|
|
- /* send command to mc*/
|
|
- err = mc_send_command(mc_io, &cmd);
|
|
- if (err)
|
|
- return err;
|
|
-
|
|
- /* retrieve response parameters */
|
|
- *token = mc_cmd_hdr_read_token(&cmd);
|
|
-
|
|
- return 0;
|
|
-}
|
|
-EXPORT_SYMBOL(dpcon_open);
|
|
-
|
|
-/**
|
|
- * dpcon_close() - Close the control session of the object
|
|
- * @mc_io: Pointer to MC portal's I/O object
|
|
- * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
|
|
- * @token: Token of DPCON object
|
|
- *
|
|
- * After this function is called, no further operations are
|
|
- * allowed on the object without opening a new control session.
|
|
- *
|
|
- * Return: '0' on Success; Error code otherwise.
|
|
- */
|
|
-int dpcon_close(struct fsl_mc_io *mc_io,
|
|
- u32 cmd_flags,
|
|
- u16 token)
|
|
-{
|
|
- struct mc_command cmd = { 0 };
|
|
-
|
|
- /* prepare command */
|
|
- cmd.header = mc_encode_cmd_header(DPCON_CMDID_CLOSE,
|
|
- cmd_flags,
|
|
- token);
|
|
-
|
|
- /* send command to mc*/
|
|
- return mc_send_command(mc_io, &cmd);
|
|
-}
|
|
-EXPORT_SYMBOL(dpcon_close);
|
|
-
|
|
-/**
|
|
- * dpcon_enable() - Enable the DPCON
|
|
- * @mc_io: Pointer to MC portal's I/O object
|
|
- * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
|
|
- * @token: Token of DPCON object
|
|
- *
|
|
- * Return: '0' on Success; Error code otherwise
|
|
- */
|
|
-int dpcon_enable(struct fsl_mc_io *mc_io,
|
|
- u32 cmd_flags,
|
|
- u16 token)
|
|
-{
|
|
- struct mc_command cmd = { 0 };
|
|
-
|
|
- /* prepare command */
|
|
- cmd.header = mc_encode_cmd_header(DPCON_CMDID_ENABLE,
|
|
- cmd_flags,
|
|
- token);
|
|
-
|
|
- /* send command to mc*/
|
|
- return mc_send_command(mc_io, &cmd);
|
|
-}
|
|
-EXPORT_SYMBOL(dpcon_enable);
|
|
-
|
|
-/**
|
|
- * dpcon_disable() - Disable the DPCON
|
|
- * @mc_io: Pointer to MC portal's I/O object
|
|
- * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
|
|
- * @token: Token of DPCON object
|
|
- *
|
|
- * Return: '0' on Success; Error code otherwise
|
|
- */
|
|
-int dpcon_disable(struct fsl_mc_io *mc_io,
|
|
- u32 cmd_flags,
|
|
- u16 token)
|
|
-{
|
|
- struct mc_command cmd = { 0 };
|
|
-
|
|
- /* prepare command */
|
|
- cmd.header = mc_encode_cmd_header(DPCON_CMDID_DISABLE,
|
|
- cmd_flags,
|
|
- token);
|
|
-
|
|
- /* send command to mc*/
|
|
- return mc_send_command(mc_io, &cmd);
|
|
-}
|
|
-EXPORT_SYMBOL(dpcon_disable);
|
|
-
|
|
-/**
|
|
- * dpcon_is_enabled() - Check if the DPCON is enabled.
|
|
- * @mc_io: Pointer to MC portal's I/O object
|
|
- * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
|
|
- * @token: Token of DPCON object
|
|
- * @en: Returns '1' if object is enabled; '0' otherwise
|
|
- *
|
|
- * Return: '0' on Success; Error code otherwise.
|
|
- */
|
|
-int dpcon_is_enabled(struct fsl_mc_io *mc_io,
|
|
- u32 cmd_flags,
|
|
- u16 token,
|
|
- int *en)
|
|
-{
|
|
- struct mc_command cmd = { 0 };
|
|
- struct dpcon_rsp_is_enabled *dpcon_rsp;
|
|
- int err;
|
|
-
|
|
- /* prepare command */
|
|
- cmd.header = mc_encode_cmd_header(DPCON_CMDID_IS_ENABLED,
|
|
- cmd_flags,
|
|
- token);
|
|
-
|
|
- /* send command to mc*/
|
|
- err = mc_send_command(mc_io, &cmd);
|
|
- if (err)
|
|
- return err;
|
|
-
|
|
- /* retrieve response parameters */
|
|
- dpcon_rsp = (struct dpcon_rsp_is_enabled *)cmd.params;
|
|
- *en = dpcon_rsp->enabled & DPCON_ENABLE;
|
|
-
|
|
- return 0;
|
|
-}
|
|
-EXPORT_SYMBOL(dpcon_is_enabled);
|
|
-
|
|
-/**
|
|
- * dpcon_reset() - Reset the DPCON, returns the object to initial state.
|
|
- * @mc_io: Pointer to MC portal's I/O object
|
|
- * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
|
|
- * @token: Token of DPCON object
|
|
- *
|
|
- * Return: '0' on Success; Error code otherwise.
|
|
- */
|
|
-int dpcon_reset(struct fsl_mc_io *mc_io,
|
|
- u32 cmd_flags,
|
|
- u16 token)
|
|
-{
|
|
- struct mc_command cmd = { 0 };
|
|
-
|
|
- /* prepare command */
|
|
- cmd.header = mc_encode_cmd_header(DPCON_CMDID_RESET,
|
|
- cmd_flags, token);
|
|
-
|
|
- /* send command to mc*/
|
|
- return mc_send_command(mc_io, &cmd);
|
|
-}
|
|
-EXPORT_SYMBOL(dpcon_reset);
|
|
-
|
|
-/**
|
|
- * dpcon_get_attributes() - Retrieve DPCON attributes.
|
|
- * @mc_io: Pointer to MC portal's I/O object
|
|
- * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
|
|
- * @token: Token of DPCON object
|
|
- * @attr: Object's attributes
|
|
- *
|
|
- * Return: '0' on Success; Error code otherwise.
|
|
- */
|
|
-int dpcon_get_attributes(struct fsl_mc_io *mc_io,
|
|
- u32 cmd_flags,
|
|
- u16 token,
|
|
- struct dpcon_attr *attr)
|
|
-{
|
|
- struct mc_command cmd = { 0 };
|
|
- struct dpcon_rsp_get_attr *dpcon_rsp;
|
|
- int err;
|
|
-
|
|
- /* prepare command */
|
|
- cmd.header = mc_encode_cmd_header(DPCON_CMDID_GET_ATTR,
|
|
- cmd_flags,
|
|
- token);
|
|
-
|
|
- /* send command to mc*/
|
|
- err = mc_send_command(mc_io, &cmd);
|
|
- if (err)
|
|
- return err;
|
|
-
|
|
- /* retrieve response parameters */
|
|
- dpcon_rsp = (struct dpcon_rsp_get_attr *)cmd.params;
|
|
- attr->id = le32_to_cpu(dpcon_rsp->id);
|
|
- attr->qbman_ch_id = le16_to_cpu(dpcon_rsp->qbman_ch_id);
|
|
- attr->num_priorities = dpcon_rsp->num_priorities;
|
|
-
|
|
- return 0;
|
|
-}
|
|
-EXPORT_SYMBOL(dpcon_get_attributes);
|
|
-
|
|
-/**
|
|
- * dpcon_set_notification() - Set DPCON notification destination
|
|
- * @mc_io: Pointer to MC portal's I/O object
|
|
- * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
|
|
- * @token: Token of DPCON object
|
|
- * @cfg: Notification parameters
|
|
- *
|
|
- * Return: '0' on Success; Error code otherwise
|
|
- */
|
|
-int dpcon_set_notification(struct fsl_mc_io *mc_io,
|
|
- u32 cmd_flags,
|
|
- u16 token,
|
|
- struct dpcon_notification_cfg *cfg)
|
|
-{
|
|
- struct mc_command cmd = { 0 };
|
|
- struct dpcon_cmd_set_notification *dpcon_cmd;
|
|
-
|
|
- /* prepare command */
|
|
- cmd.header = mc_encode_cmd_header(DPCON_CMDID_SET_NOTIFICATION,
|
|
- cmd_flags,
|
|
- token);
|
|
- dpcon_cmd = (struct dpcon_cmd_set_notification *)cmd.params;
|
|
- dpcon_cmd->dpio_id = cpu_to_le32(cfg->dpio_id);
|
|
- dpcon_cmd->priority = cfg->priority;
|
|
- dpcon_cmd->user_ctx = cpu_to_le64(cfg->user_ctx);
|
|
-
|
|
- /* send command to mc*/
|
|
- return mc_send_command(mc_io, &cmd);
|
|
-}
|
|
-EXPORT_SYMBOL(dpcon_set_notification);
|
|
-
|
|
-/**
|
|
- * dpcon_get_api_version - Get Data Path Concentrator API version
|
|
- * @mc_io: Pointer to MC portal's DPCON object
|
|
- * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
|
|
- * @major_ver: Major version of DPCON API
|
|
- * @minor_ver: Minor version of DPCON API
|
|
- *
|
|
- * Return: '0' on Success; Error code otherwise
|
|
- */
|
|
-int dpcon_get_api_version(struct fsl_mc_io *mc_io,
|
|
- u32 cmd_flags,
|
|
- u16 *major_ver,
|
|
- u16 *minor_ver)
|
|
-{
|
|
- struct mc_command cmd = { 0 };
|
|
- int err;
|
|
-
|
|
- /* prepare command */
|
|
- cmd.header = mc_encode_cmd_header(DPCON_CMDID_GET_API_VERSION,
|
|
- cmd_flags, 0);
|
|
-
|
|
- /* send command to mc */
|
|
- err = mc_send_command(mc_io, &cmd);
|
|
- if (err)
|
|
- return err;
|
|
-
|
|
- /* retrieve response parameters */
|
|
- mc_cmd_read_api_version(&cmd, major_ver, minor_ver);
|
|
-
|
|
- return 0;
|
|
-}
|
|
-EXPORT_SYMBOL(dpcon_get_api_version);
|
|
--- /dev/null
|
|
+++ b/drivers/bus/fsl-mc/dpcon.c
|
|
@@ -0,0 +1,222 @@
|
|
+// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
|
|
+/*
|
|
+ * Copyright 2013-2016 Freescale Semiconductor Inc.
|
|
+ *
|
|
+ */
|
|
+#include <linux/kernel.h>
|
|
+#include <linux/fsl/mc.h>
|
|
+#include <linux/fsl/mc.h>
|
|
+
|
|
+#include "fsl-mc-private.h"
|
|
+
|
|
+/**
|
|
+ * dpcon_open() - Open a control session for the specified object
|
|
+ * @mc_io: Pointer to MC portal's I/O object
|
|
+ * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
|
|
+ * @dpcon_id: DPCON unique ID
|
|
+ * @token: Returned token; use in subsequent API calls
|
|
+ *
|
|
+ * This function can be used to open a control session for an
|
|
+ * already created object; an object may have been declared in
|
|
+ * the DPL or by calling the dpcon_create() function.
|
|
+ * This function returns a unique authentication token,
|
|
+ * associated with the specific object ID and the specific MC
|
|
+ * portal; this token must be used in all subsequent commands for
|
|
+ * this specific object.
|
|
+ *
|
|
+ * Return: '0' on Success; Error code otherwise.
|
|
+ */
|
|
+int dpcon_open(struct fsl_mc_io *mc_io,
|
|
+ u32 cmd_flags,
|
|
+ int dpcon_id,
|
|
+ u16 *token)
|
|
+{
|
|
+ struct fsl_mc_command cmd = { 0 };
|
|
+ struct dpcon_cmd_open *dpcon_cmd;
|
|
+ int err;
|
|
+
|
|
+ /* prepare command */
|
|
+ cmd.header = mc_encode_cmd_header(DPCON_CMDID_OPEN,
|
|
+ cmd_flags,
|
|
+ 0);
|
|
+ dpcon_cmd = (struct dpcon_cmd_open *)cmd.params;
|
|
+ dpcon_cmd->dpcon_id = cpu_to_le32(dpcon_id);
|
|
+
|
|
+ /* send command to mc*/
|
|
+ err = mc_send_command(mc_io, &cmd);
|
|
+ if (err)
|
|
+ return err;
|
|
+
|
|
+ /* retrieve response parameters */
|
|
+ *token = mc_cmd_hdr_read_token(&cmd);
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+EXPORT_SYMBOL_GPL(dpcon_open);
|
|
+
|
|
+/**
|
|
+ * dpcon_close() - Close the control session of the object
|
|
+ * @mc_io: Pointer to MC portal's I/O object
|
|
+ * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
|
|
+ * @token: Token of DPCON object
|
|
+ *
|
|
+ * After this function is called, no further operations are
|
|
+ * allowed on the object without opening a new control session.
|
|
+ *
|
|
+ * Return: '0' on Success; Error code otherwise.
|
|
+ */
|
|
+int dpcon_close(struct fsl_mc_io *mc_io,
|
|
+ u32 cmd_flags,
|
|
+ u16 token)
|
|
+{
|
|
+ struct fsl_mc_command cmd = { 0 };
|
|
+
|
|
+ /* prepare command */
|
|
+ cmd.header = mc_encode_cmd_header(DPCON_CMDID_CLOSE,
|
|
+ cmd_flags,
|
|
+ token);
|
|
+
|
|
+ /* send command to mc*/
|
|
+ return mc_send_command(mc_io, &cmd);
|
|
+}
|
|
+EXPORT_SYMBOL_GPL(dpcon_close);
|
|
+
|
|
+/**
|
|
+ * dpcon_enable() - Enable the DPCON
|
|
+ * @mc_io: Pointer to MC portal's I/O object
|
|
+ * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
|
|
+ * @token: Token of DPCON object
|
|
+ *
|
|
+ * Return: '0' on Success; Error code otherwise
|
|
+ */
|
|
+int dpcon_enable(struct fsl_mc_io *mc_io,
|
|
+ u32 cmd_flags,
|
|
+ u16 token)
|
|
+{
|
|
+ struct fsl_mc_command cmd = { 0 };
|
|
+
|
|
+ /* prepare command */
|
|
+ cmd.header = mc_encode_cmd_header(DPCON_CMDID_ENABLE,
|
|
+ cmd_flags,
|
|
+ token);
|
|
+
|
|
+ /* send command to mc*/
|
|
+ return mc_send_command(mc_io, &cmd);
|
|
+}
|
|
+EXPORT_SYMBOL_GPL(dpcon_enable);
|
|
+
|
|
+/**
|
|
+ * dpcon_disable() - Disable the DPCON
|
|
+ * @mc_io: Pointer to MC portal's I/O object
|
|
+ * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
|
|
+ * @token: Token of DPCON object
|
|
+ *
|
|
+ * Return: '0' on Success; Error code otherwise
|
|
+ */
|
|
+int dpcon_disable(struct fsl_mc_io *mc_io,
|
|
+ u32 cmd_flags,
|
|
+ u16 token)
|
|
+{
|
|
+ struct fsl_mc_command cmd = { 0 };
|
|
+
|
|
+ /* prepare command */
|
|
+ cmd.header = mc_encode_cmd_header(DPCON_CMDID_DISABLE,
|
|
+ cmd_flags,
|
|
+ token);
|
|
+
|
|
+ /* send command to mc*/
|
|
+ return mc_send_command(mc_io, &cmd);
|
|
+}
|
|
+EXPORT_SYMBOL_GPL(dpcon_disable);
|
|
+
|
|
+/**
|
|
+ * dpcon_reset() - Reset the DPCON, returns the object to initial state.
|
|
+ * @mc_io: Pointer to MC portal's I/O object
|
|
+ * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
|
|
+ * @token: Token of DPCON object
|
|
+ *
|
|
+ * Return: '0' on Success; Error code otherwise.
|
|
+ */
|
|
+int dpcon_reset(struct fsl_mc_io *mc_io,
|
|
+ u32 cmd_flags,
|
|
+ u16 token)
|
|
+{
|
|
+ struct fsl_mc_command cmd = { 0 };
|
|
+
|
|
+ /* prepare command */
|
|
+ cmd.header = mc_encode_cmd_header(DPCON_CMDID_RESET,
|
|
+ cmd_flags, token);
|
|
+
|
|
+ /* send command to mc*/
|
|
+ return mc_send_command(mc_io, &cmd);
|
|
+}
|
|
+EXPORT_SYMBOL_GPL(dpcon_reset);
|
|
+
|
|
+/**
|
|
+ * dpcon_get_attributes() - Retrieve DPCON attributes.
|
|
+ * @mc_io: Pointer to MC portal's I/O object
|
|
+ * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
|
|
+ * @token: Token of DPCON object
|
|
+ * @attr: Object's attributes
|
|
+ *
|
|
+ * Return: '0' on Success; Error code otherwise.
|
|
+ */
|
|
+int dpcon_get_attributes(struct fsl_mc_io *mc_io,
|
|
+ u32 cmd_flags,
|
|
+ u16 token,
|
|
+ struct dpcon_attr *attr)
|
|
+{
|
|
+ struct fsl_mc_command cmd = { 0 };
|
|
+ struct dpcon_rsp_get_attr *dpcon_rsp;
|
|
+ int err;
|
|
+
|
|
+ /* prepare command */
|
|
+ cmd.header = mc_encode_cmd_header(DPCON_CMDID_GET_ATTR,
|
|
+ cmd_flags,
|
|
+ token);
|
|
+
|
|
+ /* send command to mc*/
|
|
+ err = mc_send_command(mc_io, &cmd);
|
|
+ if (err)
|
|
+ return err;
|
|
+
|
|
+ /* retrieve response parameters */
|
|
+ dpcon_rsp = (struct dpcon_rsp_get_attr *)cmd.params;
|
|
+ attr->id = le32_to_cpu(dpcon_rsp->id);
|
|
+ attr->qbman_ch_id = le16_to_cpu(dpcon_rsp->qbman_ch_id);
|
|
+ attr->num_priorities = dpcon_rsp->num_priorities;
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+EXPORT_SYMBOL_GPL(dpcon_get_attributes);
|
|
+
|
|
+/**
|
|
+ * dpcon_set_notification() - Set DPCON notification destination
|
|
+ * @mc_io: Pointer to MC portal's I/O object
|
|
+ * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
|
|
+ * @token: Token of DPCON object
|
|
+ * @cfg: Notification parameters
|
|
+ *
|
|
+ * Return: '0' on Success; Error code otherwise
|
|
+ */
|
|
+int dpcon_set_notification(struct fsl_mc_io *mc_io,
|
|
+ u32 cmd_flags,
|
|
+ u16 token,
|
|
+ struct dpcon_notification_cfg *cfg)
|
|
+{
|
|
+ struct fsl_mc_command cmd = { 0 };
|
|
+ struct dpcon_cmd_set_notification *dpcon_cmd;
|
|
+
|
|
+ /* prepare command */
|
|
+ cmd.header = mc_encode_cmd_header(DPCON_CMDID_SET_NOTIFICATION,
|
|
+ cmd_flags,
|
|
+ token);
|
|
+ dpcon_cmd = (struct dpcon_cmd_set_notification *)cmd.params;
|
|
+ dpcon_cmd->dpio_id = cpu_to_le32(cfg->dpio_id);
|
|
+ dpcon_cmd->priority = cfg->priority;
|
|
+ dpcon_cmd->user_ctx = cpu_to_le64(cfg->user_ctx);
|
|
+
|
|
+ /* send command to mc*/
|
|
+ return mc_send_command(mc_io, &cmd);
|
|
+}
|
|
+EXPORT_SYMBOL_GPL(dpcon_set_notification);
|
|
--- /dev/null
|
|
+++ b/drivers/bus/fsl-mc/dpmcp.c
|
|
@@ -0,0 +1,99 @@
|
|
+// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
|
|
+/*
|
|
+ * Copyright 2013-2016 Freescale Semiconductor Inc.
|
|
+ *
|
|
+ */
|
|
+#include <linux/kernel.h>
|
|
+#include <linux/fsl/mc.h>
|
|
+
|
|
+#include "fsl-mc-private.h"
|
|
+
|
|
+/**
|
|
+ * dpmcp_open() - Open a control session for the specified object.
|
|
+ * @mc_io: Pointer to MC portal's I/O object
|
|
+ * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
|
|
+ * @dpmcp_id: DPMCP unique ID
|
|
+ * @token: Returned token; use in subsequent API calls
|
|
+ *
|
|
+ * This function can be used to open a control session for an
|
|
+ * already created object; an object may have been declared in
|
|
+ * the DPL or by calling the dpmcp_create function.
|
|
+ * This function returns a unique authentication token,
|
|
+ * associated with the specific object ID and the specific MC
|
|
+ * portal; this token must be used in all subsequent commands for
|
|
+ * this specific object
|
|
+ *
|
|
+ * Return: '0' on Success; Error code otherwise.
|
|
+ */
|
|
+int dpmcp_open(struct fsl_mc_io *mc_io,
|
|
+ u32 cmd_flags,
|
|
+ int dpmcp_id,
|
|
+ u16 *token)
|
|
+{
|
|
+ struct fsl_mc_command cmd = { 0 };
|
|
+ struct dpmcp_cmd_open *cmd_params;
|
|
+ int err;
|
|
+
|
|
+ /* prepare command */
|
|
+ cmd.header = mc_encode_cmd_header(DPMCP_CMDID_OPEN,
|
|
+ cmd_flags, 0);
|
|
+ cmd_params = (struct dpmcp_cmd_open *)cmd.params;
|
|
+ cmd_params->dpmcp_id = cpu_to_le32(dpmcp_id);
|
|
+
|
|
+ /* send command to mc*/
|
|
+ err = mc_send_command(mc_io, &cmd);
|
|
+ if (err)
|
|
+ return err;
|
|
+
|
|
+ /* retrieve response parameters */
|
|
+ *token = mc_cmd_hdr_read_token(&cmd);
|
|
+
|
|
+ return err;
|
|
+}
|
|
+
|
|
+/**
|
|
+ * dpmcp_close() - Close the control session of the object
|
|
+ * @mc_io: Pointer to MC portal's I/O object
|
|
+ * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
|
|
+ * @token: Token of DPMCP object
|
|
+ *
|
|
+ * After this function is called, no further operations are
|
|
+ * allowed on the object without opening a new control session.
|
|
+ *
|
|
+ * Return: '0' on Success; Error code otherwise.
|
|
+ */
|
|
+int dpmcp_close(struct fsl_mc_io *mc_io,
|
|
+ u32 cmd_flags,
|
|
+ u16 token)
|
|
+{
|
|
+ struct fsl_mc_command cmd = { 0 };
|
|
+
|
|
+ /* prepare command */
|
|
+ cmd.header = mc_encode_cmd_header(DPMCP_CMDID_CLOSE,
|
|
+ cmd_flags, token);
|
|
+
|
|
+ /* send command to mc*/
|
|
+ return mc_send_command(mc_io, &cmd);
|
|
+}
|
|
+
|
|
+/**
|
|
+ * dpmcp_reset() - Reset the DPMCP, returns the object to initial state.
|
|
+ * @mc_io: Pointer to MC portal's I/O object
|
|
+ * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
|
|
+ * @token: Token of DPMCP object
|
|
+ *
|
|
+ * Return: '0' on Success; Error code otherwise.
|
|
+ */
|
|
+int dpmcp_reset(struct fsl_mc_io *mc_io,
|
|
+ u32 cmd_flags,
|
|
+ u16 token)
|
|
+{
|
|
+ struct fsl_mc_command cmd = { 0 };
|
|
+
|
|
+ /* prepare command */
|
|
+ cmd.header = mc_encode_cmd_header(DPMCP_CMDID_RESET,
|
|
+ cmd_flags, token);
|
|
+
|
|
+ /* send command to mc*/
|
|
+ return mc_send_command(mc_io, &cmd);
|
|
+}
|
|
--- a/drivers/staging/fsl-mc/bus/dprc-driver.c
|
|
+++ /dev/null
|
|
@@ -1,813 +0,0 @@
|
|
-// SPDX-License-Identifier: GPL-2.0
|
|
-/*
|
|
- * Freescale data path resource container (DPRC) driver
|
|
- *
|
|
- * Copyright (C) 2014-2016 Freescale Semiconductor, Inc.
|
|
- * Author: German Rivera <German.Rivera@freescale.com>
|
|
- *
|
|
- */
|
|
-
|
|
-#include <linux/module.h>
|
|
-#include <linux/slab.h>
|
|
-#include <linux/interrupt.h>
|
|
-#include <linux/msi.h>
|
|
-#include "../include/mc.h"
|
|
-
|
|
-#include "dprc-cmd.h"
|
|
-#include "fsl-mc-private.h"
|
|
-
|
|
-#define FSL_MC_DPRC_DRIVER_NAME "fsl_mc_dprc"
|
|
-
|
|
-struct fsl_mc_child_objs {
|
|
- int child_count;
|
|
- struct fsl_mc_obj_desc *child_array;
|
|
-};
|
|
-
|
|
-static bool fsl_mc_device_match(struct fsl_mc_device *mc_dev,
|
|
- struct fsl_mc_obj_desc *obj_desc)
|
|
-{
|
|
- return mc_dev->obj_desc.id == obj_desc->id &&
|
|
- strcmp(mc_dev->obj_desc.type, obj_desc->type) == 0;
|
|
-
|
|
-}
|
|
-
|
|
-static int __fsl_mc_device_remove_if_not_in_mc(struct device *dev, void *data)
|
|
-{
|
|
- int i;
|
|
- struct fsl_mc_child_objs *objs;
|
|
- struct fsl_mc_device *mc_dev;
|
|
-
|
|
- WARN_ON(!dev);
|
|
- WARN_ON(!data);
|
|
- mc_dev = to_fsl_mc_device(dev);
|
|
- objs = data;
|
|
-
|
|
- for (i = 0; i < objs->child_count; i++) {
|
|
- struct fsl_mc_obj_desc *obj_desc = &objs->child_array[i];
|
|
-
|
|
- if (strlen(obj_desc->type) != 0 &&
|
|
- fsl_mc_device_match(mc_dev, obj_desc))
|
|
- break;
|
|
- }
|
|
-
|
|
- if (i == objs->child_count)
|
|
- fsl_mc_device_remove(mc_dev);
|
|
-
|
|
- return 0;
|
|
-}
|
|
-
|
|
-static int __fsl_mc_device_remove(struct device *dev, void *data)
|
|
-{
|
|
- WARN_ON(!dev);
|
|
- WARN_ON(data);
|
|
- fsl_mc_device_remove(to_fsl_mc_device(dev));
|
|
- return 0;
|
|
-}
|
|
-
|
|
-/**
|
|
- * dprc_remove_devices - Removes devices for objects removed from a DPRC
|
|
- *
|
|
- * @mc_bus_dev: pointer to the fsl-mc device that represents a DPRC object
|
|
- * @obj_desc_array: array of object descriptors for child objects currently
|
|
- * present in the DPRC in the MC.
|
|
- * @num_child_objects_in_mc: number of entries in obj_desc_array
|
|
- *
|
|
- * Synchronizes the state of the Linux bus driver with the actual state of
|
|
- * the MC by removing devices that represent MC objects that have
|
|
- * been dynamically removed in the physical DPRC.
|
|
- */
|
|
-static void dprc_remove_devices(struct fsl_mc_device *mc_bus_dev,
|
|
- struct fsl_mc_obj_desc *obj_desc_array,
|
|
- int num_child_objects_in_mc)
|
|
-{
|
|
- if (num_child_objects_in_mc != 0) {
|
|
- /*
|
|
- * Remove child objects that are in the DPRC in Linux,
|
|
- * but not in the MC:
|
|
- */
|
|
- struct fsl_mc_child_objs objs;
|
|
-
|
|
- objs.child_count = num_child_objects_in_mc;
|
|
- objs.child_array = obj_desc_array;
|
|
- device_for_each_child(&mc_bus_dev->dev, &objs,
|
|
- __fsl_mc_device_remove_if_not_in_mc);
|
|
- } else {
|
|
- /*
|
|
- * There are no child objects for this DPRC in the MC.
|
|
- * So, remove all the child devices from Linux:
|
|
- */
|
|
- device_for_each_child(&mc_bus_dev->dev, NULL,
|
|
- __fsl_mc_device_remove);
|
|
- }
|
|
-}
|
|
-
|
|
-static int __fsl_mc_device_match(struct device *dev, void *data)
|
|
-{
|
|
- struct fsl_mc_obj_desc *obj_desc = data;
|
|
- struct fsl_mc_device *mc_dev = to_fsl_mc_device(dev);
|
|
-
|
|
- return fsl_mc_device_match(mc_dev, obj_desc);
|
|
-}
|
|
-
|
|
-static struct fsl_mc_device *fsl_mc_device_lookup(struct fsl_mc_obj_desc
|
|
- *obj_desc,
|
|
- struct fsl_mc_device
|
|
- *mc_bus_dev)
|
|
-{
|
|
- struct device *dev;
|
|
-
|
|
- dev = device_find_child(&mc_bus_dev->dev, obj_desc,
|
|
- __fsl_mc_device_match);
|
|
-
|
|
- return dev ? to_fsl_mc_device(dev) : NULL;
|
|
-}
|
|
-
|
|
-/**
|
|
- * check_plugged_state_change - Check change in an MC object's plugged state
|
|
- *
|
|
- * @mc_dev: pointer to the fsl-mc device for a given MC object
|
|
- * @obj_desc: pointer to the MC object's descriptor in the MC
|
|
- *
|
|
- * If the plugged state has changed from unplugged to plugged, the fsl-mc
|
|
- * device is bound to the corresponding device driver.
|
|
- * If the plugged state has changed from plugged to unplugged, the fsl-mc
|
|
- * device is unbound from the corresponding device driver.
|
|
- */
|
|
-static void check_plugged_state_change(struct fsl_mc_device *mc_dev,
|
|
- struct fsl_mc_obj_desc *obj_desc)
|
|
-{
|
|
- int error;
|
|
- u32 plugged_flag_at_mc =
|
|
- obj_desc->state & FSL_MC_OBJ_STATE_PLUGGED;
|
|
-
|
|
- if (plugged_flag_at_mc !=
|
|
- (mc_dev->obj_desc.state & FSL_MC_OBJ_STATE_PLUGGED)) {
|
|
- if (plugged_flag_at_mc) {
|
|
- mc_dev->obj_desc.state |= FSL_MC_OBJ_STATE_PLUGGED;
|
|
- error = device_attach(&mc_dev->dev);
|
|
- if (error < 0) {
|
|
- dev_err(&mc_dev->dev,
|
|
- "device_attach() failed: %d\n",
|
|
- error);
|
|
- }
|
|
- } else {
|
|
- mc_dev->obj_desc.state &= ~FSL_MC_OBJ_STATE_PLUGGED;
|
|
- device_release_driver(&mc_dev->dev);
|
|
- }
|
|
- }
|
|
-}
|
|
-
|
|
-/**
|
|
- * dprc_add_new_devices - Adds devices to the logical bus for a DPRC
|
|
- *
|
|
- * @mc_bus_dev: pointer to the fsl-mc device that represents a DPRC object
|
|
- * @obj_desc_array: array of device descriptors for child devices currently
|
|
- * present in the physical DPRC.
|
|
- * @num_child_objects_in_mc: number of entries in obj_desc_array
|
|
- *
|
|
- * Synchronizes the state of the Linux bus driver with the actual
|
|
- * state of the MC by adding objects that have been newly discovered
|
|
- * in the physical DPRC.
|
|
- */
|
|
-static void dprc_add_new_devices(struct fsl_mc_device *mc_bus_dev,
|
|
- struct fsl_mc_obj_desc *obj_desc_array,
|
|
- int num_child_objects_in_mc)
|
|
-{
|
|
- int error;
|
|
- int i;
|
|
-
|
|
- for (i = 0; i < num_child_objects_in_mc; i++) {
|
|
- struct fsl_mc_device *child_dev;
|
|
- struct fsl_mc_obj_desc *obj_desc = &obj_desc_array[i];
|
|
-
|
|
- if (strlen(obj_desc->type) == 0)
|
|
- continue;
|
|
-
|
|
- /*
|
|
- * Check if device is already known to Linux:
|
|
- */
|
|
- child_dev = fsl_mc_device_lookup(obj_desc, mc_bus_dev);
|
|
- if (child_dev) {
|
|
- check_plugged_state_change(child_dev, obj_desc);
|
|
- put_device(&child_dev->dev);
|
|
- continue;
|
|
- }
|
|
-
|
|
- error = fsl_mc_device_add(obj_desc, NULL, &mc_bus_dev->dev,
|
|
- &child_dev);
|
|
- if (error < 0)
|
|
- continue;
|
|
- }
|
|
-}
|
|
-
|
|
-/**
|
|
- * dprc_scan_objects - Discover objects in a DPRC
|
|
- *
|
|
- * @mc_bus_dev: pointer to the fsl-mc device that represents a DPRC object
|
|
- * @total_irq_count: total number of IRQs needed by objects in the DPRC.
|
|
- *
|
|
- * Detects objects added and removed from a DPRC and synchronizes the
|
|
- * state of the Linux bus driver, MC by adding and removing
|
|
- * devices accordingly.
|
|
- * Two types of devices can be found in a DPRC: allocatable objects (e.g.,
|
|
- * dpbp, dpmcp) and non-allocatable devices (e.g., dprc, dpni).
|
|
- * All allocatable devices needed to be probed before all non-allocatable
|
|
- * devices, to ensure that device drivers for non-allocatable
|
|
- * devices can allocate any type of allocatable devices.
|
|
- * That is, we need to ensure that the corresponding resource pools are
|
|
- * populated before they can get allocation requests from probe callbacks
|
|
- * of the device drivers for the non-allocatable devices.
|
|
- */
|
|
-static int dprc_scan_objects(struct fsl_mc_device *mc_bus_dev,
|
|
- unsigned int *total_irq_count)
|
|
-{
|
|
- int num_child_objects;
|
|
- int dprc_get_obj_failures;
|
|
- int error;
|
|
- unsigned int irq_count = mc_bus_dev->obj_desc.irq_count;
|
|
- struct fsl_mc_obj_desc *child_obj_desc_array = NULL;
|
|
-
|
|
- error = dprc_get_obj_count(mc_bus_dev->mc_io,
|
|
- 0,
|
|
- mc_bus_dev->mc_handle,
|
|
- &num_child_objects);
|
|
- if (error < 0) {
|
|
- dev_err(&mc_bus_dev->dev, "dprc_get_obj_count() failed: %d\n",
|
|
- error);
|
|
- return error;
|
|
- }
|
|
-
|
|
- if (num_child_objects != 0) {
|
|
- int i;
|
|
-
|
|
- child_obj_desc_array =
|
|
- devm_kmalloc_array(&mc_bus_dev->dev, num_child_objects,
|
|
- sizeof(*child_obj_desc_array),
|
|
- GFP_KERNEL);
|
|
- if (!child_obj_desc_array)
|
|
- return -ENOMEM;
|
|
-
|
|
- /*
|
|
- * Discover objects currently present in the physical DPRC:
|
|
- */
|
|
- dprc_get_obj_failures = 0;
|
|
- for (i = 0; i < num_child_objects; i++) {
|
|
- struct fsl_mc_obj_desc *obj_desc =
|
|
- &child_obj_desc_array[i];
|
|
-
|
|
- error = dprc_get_obj(mc_bus_dev->mc_io,
|
|
- 0,
|
|
- mc_bus_dev->mc_handle,
|
|
- i, obj_desc);
|
|
- if (error < 0) {
|
|
- dev_err(&mc_bus_dev->dev,
|
|
- "dprc_get_obj(i=%d) failed: %d\n",
|
|
- i, error);
|
|
- /*
|
|
- * Mark the obj entry as "invalid", by using the
|
|
- * empty string as obj type:
|
|
- */
|
|
- obj_desc->type[0] = '\0';
|
|
- obj_desc->id = error;
|
|
- dprc_get_obj_failures++;
|
|
- continue;
|
|
- }
|
|
-
|
|
- /*
|
|
- * add a quirk for all versions of dpsec < 4.0...none
|
|
- * are coherent regardless of what the MC reports.
|
|
- */
|
|
- if ((strcmp(obj_desc->type, "dpseci") == 0) &&
|
|
- (obj_desc->ver_major < 4))
|
|
- obj_desc->flags |=
|
|
- FSL_MC_OBJ_FLAG_NO_MEM_SHAREABILITY;
|
|
-
|
|
- irq_count += obj_desc->irq_count;
|
|
- dev_dbg(&mc_bus_dev->dev,
|
|
- "Discovered object: type %s, id %d\n",
|
|
- obj_desc->type, obj_desc->id);
|
|
- }
|
|
-
|
|
- if (dprc_get_obj_failures != 0) {
|
|
- dev_err(&mc_bus_dev->dev,
|
|
- "%d out of %d devices could not be retrieved\n",
|
|
- dprc_get_obj_failures, num_child_objects);
|
|
- }
|
|
- }
|
|
-
|
|
- *total_irq_count = irq_count;
|
|
- dprc_remove_devices(mc_bus_dev, child_obj_desc_array,
|
|
- num_child_objects);
|
|
-
|
|
- dprc_add_new_devices(mc_bus_dev, child_obj_desc_array,
|
|
- num_child_objects);
|
|
-
|
|
- if (child_obj_desc_array)
|
|
- devm_kfree(&mc_bus_dev->dev, child_obj_desc_array);
|
|
-
|
|
- return 0;
|
|
-}
|
|
-
|
|
-/**
|
|
- * dprc_scan_container - Scans a physical DPRC and synchronizes Linux bus state
|
|
- *
|
|
- * @mc_bus_dev: pointer to the fsl-mc device that represents a DPRC object
|
|
- *
|
|
- * Scans the physical DPRC and synchronizes the state of the Linux
|
|
- * bus driver with the actual state of the MC by adding and removing
|
|
- * devices as appropriate.
|
|
- */
|
|
-static int dprc_scan_container(struct fsl_mc_device *mc_bus_dev)
|
|
-{
|
|
- int error;
|
|
- unsigned int irq_count;
|
|
- struct fsl_mc_bus *mc_bus = to_fsl_mc_bus(mc_bus_dev);
|
|
-
|
|
- fsl_mc_init_all_resource_pools(mc_bus_dev);
|
|
-
|
|
- /*
|
|
- * Discover objects in the DPRC:
|
|
- */
|
|
- mutex_lock(&mc_bus->scan_mutex);
|
|
- error = dprc_scan_objects(mc_bus_dev, &irq_count);
|
|
- mutex_unlock(&mc_bus->scan_mutex);
|
|
- if (error < 0)
|
|
- goto error;
|
|
-
|
|
- if (dev_get_msi_domain(&mc_bus_dev->dev) && !mc_bus->irq_resources) {
|
|
- if (irq_count > FSL_MC_IRQ_POOL_MAX_TOTAL_IRQS) {
|
|
- dev_warn(&mc_bus_dev->dev,
|
|
- "IRQs needed (%u) exceed IRQs preallocated (%u)\n",
|
|
- irq_count, FSL_MC_IRQ_POOL_MAX_TOTAL_IRQS);
|
|
- }
|
|
-
|
|
- error = fsl_mc_populate_irq_pool(
|
|
- mc_bus,
|
|
- FSL_MC_IRQ_POOL_MAX_TOTAL_IRQS);
|
|
- if (error < 0)
|
|
- goto error;
|
|
- }
|
|
-
|
|
- return 0;
|
|
-error:
|
|
- fsl_mc_cleanup_all_resource_pools(mc_bus_dev);
|
|
- return error;
|
|
-}
|
|
-
|
|
-/**
|
|
- * dprc_irq0_handler - Regular ISR for DPRC interrupt 0
|
|
- *
|
|
- * @irq: IRQ number of the interrupt being handled
|
|
- * @arg: Pointer to device structure
|
|
- */
|
|
-static irqreturn_t dprc_irq0_handler(int irq_num, void *arg)
|
|
-{
|
|
- return IRQ_WAKE_THREAD;
|
|
-}
|
|
-
|
|
-/**
|
|
- * dprc_irq0_handler_thread - Handler thread function for DPRC interrupt 0
|
|
- *
|
|
- * @irq: IRQ number of the interrupt being handled
|
|
- * @arg: Pointer to device structure
|
|
- */
|
|
-static irqreturn_t dprc_irq0_handler_thread(int irq_num, void *arg)
|
|
-{
|
|
- int error;
|
|
- u32 status;
|
|
- struct device *dev = arg;
|
|
- struct fsl_mc_device *mc_dev = to_fsl_mc_device(dev);
|
|
- struct fsl_mc_bus *mc_bus = to_fsl_mc_bus(mc_dev);
|
|
- struct fsl_mc_io *mc_io = mc_dev->mc_io;
|
|
- struct msi_desc *msi_desc = mc_dev->irqs[0]->msi_desc;
|
|
-
|
|
- dev_dbg(dev, "DPRC IRQ %d triggered on CPU %u\n",
|
|
- irq_num, smp_processor_id());
|
|
-
|
|
- if (WARN_ON(!(mc_dev->flags & FSL_MC_IS_DPRC)))
|
|
- return IRQ_HANDLED;
|
|
-
|
|
- mutex_lock(&mc_bus->scan_mutex);
|
|
- if (WARN_ON(!msi_desc || msi_desc->irq != (u32)irq_num))
|
|
- goto out;
|
|
-
|
|
- status = 0;
|
|
- error = dprc_get_irq_status(mc_io, 0, mc_dev->mc_handle, 0,
|
|
- &status);
|
|
- if (error < 0) {
|
|
- dev_err(dev,
|
|
- "dprc_get_irq_status() failed: %d\n", error);
|
|
- goto out;
|
|
- }
|
|
-
|
|
- error = dprc_clear_irq_status(mc_io, 0, mc_dev->mc_handle, 0,
|
|
- status);
|
|
- if (error < 0) {
|
|
- dev_err(dev,
|
|
- "dprc_clear_irq_status() failed: %d\n", error);
|
|
- goto out;
|
|
- }
|
|
-
|
|
- if (status & (DPRC_IRQ_EVENT_OBJ_ADDED |
|
|
- DPRC_IRQ_EVENT_OBJ_REMOVED |
|
|
- DPRC_IRQ_EVENT_CONTAINER_DESTROYED |
|
|
- DPRC_IRQ_EVENT_OBJ_DESTROYED |
|
|
- DPRC_IRQ_EVENT_OBJ_CREATED)) {
|
|
- unsigned int irq_count;
|
|
-
|
|
- error = dprc_scan_objects(mc_dev, &irq_count);
|
|
- if (error < 0) {
|
|
- /*
|
|
- * If the error is -ENXIO, we ignore it, as it indicates
|
|
- * that the object scan was aborted, as we detected that
|
|
- * an object was removed from the DPRC in the MC, while
|
|
- * we were scanning the DPRC.
|
|
- */
|
|
- if (error != -ENXIO) {
|
|
- dev_err(dev, "dprc_scan_objects() failed: %d\n",
|
|
- error);
|
|
- }
|
|
-
|
|
- goto out;
|
|
- }
|
|
-
|
|
- if (irq_count > FSL_MC_IRQ_POOL_MAX_TOTAL_IRQS) {
|
|
- dev_warn(dev,
|
|
- "IRQs needed (%u) exceed IRQs preallocated (%u)\n",
|
|
- irq_count, FSL_MC_IRQ_POOL_MAX_TOTAL_IRQS);
|
|
- }
|
|
- }
|
|
-
|
|
-out:
|
|
- mutex_unlock(&mc_bus->scan_mutex);
|
|
- return IRQ_HANDLED;
|
|
-}
|
|
-
|
|
-/*
|
|
- * Disable and clear interrupt for a given DPRC object
|
|
- */
|
|
-static int disable_dprc_irq(struct fsl_mc_device *mc_dev)
|
|
-{
|
|
- int error;
|
|
- struct fsl_mc_io *mc_io = mc_dev->mc_io;
|
|
-
|
|
- WARN_ON(mc_dev->obj_desc.irq_count != 1);
|
|
-
|
|
- /*
|
|
- * Disable generation of interrupt, while we configure it:
|
|
- */
|
|
- error = dprc_set_irq_enable(mc_io, 0, mc_dev->mc_handle, 0, 0);
|
|
- if (error < 0) {
|
|
- dev_err(&mc_dev->dev,
|
|
- "Disabling DPRC IRQ failed: dprc_set_irq_enable() failed: %d\n",
|
|
- error);
|
|
- return error;
|
|
- }
|
|
-
|
|
- /*
|
|
- * Disable all interrupt causes for the interrupt:
|
|
- */
|
|
- error = dprc_set_irq_mask(mc_io, 0, mc_dev->mc_handle, 0, 0x0);
|
|
- if (error < 0) {
|
|
- dev_err(&mc_dev->dev,
|
|
- "Disabling DPRC IRQ failed: dprc_set_irq_mask() failed: %d\n",
|
|
- error);
|
|
- return error;
|
|
- }
|
|
-
|
|
- /*
|
|
- * Clear any leftover interrupts:
|
|
- */
|
|
- error = dprc_clear_irq_status(mc_io, 0, mc_dev->mc_handle, 0, ~0x0U);
|
|
- if (error < 0) {
|
|
- dev_err(&mc_dev->dev,
|
|
- "Disabling DPRC IRQ failed: dprc_clear_irq_status() failed: %d\n",
|
|
- error);
|
|
- return error;
|
|
- }
|
|
-
|
|
- return 0;
|
|
-}
|
|
-
|
|
-static int register_dprc_irq_handler(struct fsl_mc_device *mc_dev)
|
|
-{
|
|
- int error;
|
|
- struct fsl_mc_device_irq *irq = mc_dev->irqs[0];
|
|
-
|
|
- WARN_ON(mc_dev->obj_desc.irq_count != 1);
|
|
-
|
|
- /*
|
|
- * NOTE: devm_request_threaded_irq() invokes the device-specific
|
|
- * function that programs the MSI physically in the device
|
|
- */
|
|
- error = devm_request_threaded_irq(&mc_dev->dev,
|
|
- irq->msi_desc->irq,
|
|
- dprc_irq0_handler,
|
|
- dprc_irq0_handler_thread,
|
|
- IRQF_NO_SUSPEND | IRQF_ONESHOT,
|
|
- dev_name(&mc_dev->dev),
|
|
- &mc_dev->dev);
|
|
- if (error < 0) {
|
|
- dev_err(&mc_dev->dev,
|
|
- "devm_request_threaded_irq() failed: %d\n",
|
|
- error);
|
|
- return error;
|
|
- }
|
|
-
|
|
- return 0;
|
|
-}
|
|
-
|
|
-static int enable_dprc_irq(struct fsl_mc_device *mc_dev)
|
|
-{
|
|
- int error;
|
|
-
|
|
- /*
|
|
- * Enable all interrupt causes for the interrupt:
|
|
- */
|
|
- error = dprc_set_irq_mask(mc_dev->mc_io, 0, mc_dev->mc_handle, 0,
|
|
- ~0x0u);
|
|
- if (error < 0) {
|
|
- dev_err(&mc_dev->dev,
|
|
- "Enabling DPRC IRQ failed: dprc_set_irq_mask() failed: %d\n",
|
|
- error);
|
|
-
|
|
- return error;
|
|
- }
|
|
-
|
|
- /*
|
|
- * Enable generation of the interrupt:
|
|
- */
|
|
- error = dprc_set_irq_enable(mc_dev->mc_io, 0, mc_dev->mc_handle, 0, 1);
|
|
- if (error < 0) {
|
|
- dev_err(&mc_dev->dev,
|
|
- "Enabling DPRC IRQ failed: dprc_set_irq_enable() failed: %d\n",
|
|
- error);
|
|
-
|
|
- return error;
|
|
- }
|
|
-
|
|
- return 0;
|
|
-}
|
|
-
|
|
-/*
|
|
- * Setup interrupt for a given DPRC device
|
|
- */
|
|
-static int dprc_setup_irq(struct fsl_mc_device *mc_dev)
|
|
-{
|
|
- int error;
|
|
-
|
|
- error = fsl_mc_allocate_irqs(mc_dev);
|
|
- if (error < 0)
|
|
- return error;
|
|
-
|
|
- error = disable_dprc_irq(mc_dev);
|
|
- if (error < 0)
|
|
- goto error_free_irqs;
|
|
-
|
|
- error = register_dprc_irq_handler(mc_dev);
|
|
- if (error < 0)
|
|
- goto error_free_irqs;
|
|
-
|
|
- error = enable_dprc_irq(mc_dev);
|
|
- if (error < 0)
|
|
- goto error_free_irqs;
|
|
-
|
|
- return 0;
|
|
-
|
|
-error_free_irqs:
|
|
- fsl_mc_free_irqs(mc_dev);
|
|
- return error;
|
|
-}
|
|
-
|
|
-/**
|
|
- * dprc_probe - callback invoked when a DPRC is being bound to this driver
|
|
- *
|
|
- * @mc_dev: Pointer to fsl-mc device representing a DPRC
|
|
- *
|
|
- * It opens the physical DPRC in the MC.
|
|
- * It scans the DPRC to discover the MC objects contained in it.
|
|
- * It creates the interrupt pool for the MC bus associated with the DPRC.
|
|
- * It configures the interrupts for the DPRC device itself.
|
|
- */
|
|
-static int dprc_probe(struct fsl_mc_device *mc_dev)
|
|
-{
|
|
- int error;
|
|
- size_t region_size;
|
|
- struct device *parent_dev = mc_dev->dev.parent;
|
|
- struct fsl_mc_bus *mc_bus = to_fsl_mc_bus(mc_dev);
|
|
- bool mc_io_created = false;
|
|
- bool msi_domain_set = false;
|
|
- u16 major_ver, minor_ver;
|
|
-
|
|
- if (WARN_ON(strcmp(mc_dev->obj_desc.type, "dprc") != 0))
|
|
- return -EINVAL;
|
|
-
|
|
- if (WARN_ON(dev_get_msi_domain(&mc_dev->dev)))
|
|
- return -EINVAL;
|
|
-
|
|
- if (!mc_dev->mc_io) {
|
|
- /*
|
|
- * This is a child DPRC:
|
|
- */
|
|
- if (WARN_ON(!dev_is_fsl_mc(parent_dev)))
|
|
- return -EINVAL;
|
|
-
|
|
- if (WARN_ON(mc_dev->obj_desc.region_count == 0))
|
|
- return -EINVAL;
|
|
-
|
|
- region_size = resource_size(mc_dev->regions);
|
|
-
|
|
- error = fsl_create_mc_io(&mc_dev->dev,
|
|
- mc_dev->regions[0].start,
|
|
- region_size,
|
|
- NULL,
|
|
- FSL_MC_IO_ATOMIC_CONTEXT_PORTAL,
|
|
- &mc_dev->mc_io);
|
|
- if (error < 0)
|
|
- return error;
|
|
-
|
|
- mc_io_created = true;
|
|
-
|
|
- /*
|
|
- * Inherit parent MSI domain:
|
|
- */
|
|
- dev_set_msi_domain(&mc_dev->dev,
|
|
- dev_get_msi_domain(parent_dev));
|
|
- msi_domain_set = true;
|
|
- } else {
|
|
- /*
|
|
- * This is a root DPRC
|
|
- */
|
|
- struct irq_domain *mc_msi_domain;
|
|
-
|
|
- if (WARN_ON(dev_is_fsl_mc(parent_dev)))
|
|
- return -EINVAL;
|
|
-
|
|
- error = fsl_mc_find_msi_domain(parent_dev,
|
|
- &mc_msi_domain);
|
|
- if (error < 0) {
|
|
- dev_warn(&mc_dev->dev,
|
|
- "WARNING: MC bus without interrupt support\n");
|
|
- } else {
|
|
- dev_set_msi_domain(&mc_dev->dev, mc_msi_domain);
|
|
- msi_domain_set = true;
|
|
- }
|
|
- }
|
|
-
|
|
- error = dprc_open(mc_dev->mc_io, 0, mc_dev->obj_desc.id,
|
|
- &mc_dev->mc_handle);
|
|
- if (error < 0) {
|
|
- dev_err(&mc_dev->dev, "dprc_open() failed: %d\n", error);
|
|
- goto error_cleanup_msi_domain;
|
|
- }
|
|
-
|
|
- error = dprc_get_attributes(mc_dev->mc_io, 0, mc_dev->mc_handle,
|
|
- &mc_bus->dprc_attr);
|
|
- if (error < 0) {
|
|
- dev_err(&mc_dev->dev, "dprc_get_attributes() failed: %d\n",
|
|
- error);
|
|
- goto error_cleanup_open;
|
|
- }
|
|
-
|
|
- error = dprc_get_api_version(mc_dev->mc_io, 0,
|
|
- &major_ver,
|
|
- &minor_ver);
|
|
- if (error < 0) {
|
|
- dev_err(&mc_dev->dev, "dprc_get_api_version() failed: %d\n",
|
|
- error);
|
|
- goto error_cleanup_open;
|
|
- }
|
|
-
|
|
- if (major_ver < DPRC_MIN_VER_MAJOR ||
|
|
- (major_ver == DPRC_MIN_VER_MAJOR &&
|
|
- minor_ver < DPRC_MIN_VER_MINOR)) {
|
|
- dev_err(&mc_dev->dev,
|
|
- "ERROR: DPRC version %d.%d not supported\n",
|
|
- major_ver, minor_ver);
|
|
- error = -ENOTSUPP;
|
|
- goto error_cleanup_open;
|
|
- }
|
|
-
|
|
- mutex_init(&mc_bus->scan_mutex);
|
|
-
|
|
- /*
|
|
- * Discover MC objects in DPRC object:
|
|
- */
|
|
- error = dprc_scan_container(mc_dev);
|
|
- if (error < 0)
|
|
- goto error_cleanup_open;
|
|
-
|
|
- /*
|
|
- * Configure interrupt for the DPRC object associated with this MC bus:
|
|
- */
|
|
- error = dprc_setup_irq(mc_dev);
|
|
- if (error < 0)
|
|
- goto error_cleanup_open;
|
|
-
|
|
- dev_info(&mc_dev->dev, "DPRC device bound to driver");
|
|
- return 0;
|
|
-
|
|
-error_cleanup_open:
|
|
- (void)dprc_close(mc_dev->mc_io, 0, mc_dev->mc_handle);
|
|
-
|
|
-error_cleanup_msi_domain:
|
|
- if (msi_domain_set)
|
|
- dev_set_msi_domain(&mc_dev->dev, NULL);
|
|
-
|
|
- if (mc_io_created) {
|
|
- fsl_destroy_mc_io(mc_dev->mc_io);
|
|
- mc_dev->mc_io = NULL;
|
|
- }
|
|
-
|
|
- return error;
|
|
-}
|
|
-
|
|
-/*
|
|
- * Tear down interrupt for a given DPRC object
|
|
- */
|
|
-static void dprc_teardown_irq(struct fsl_mc_device *mc_dev)
|
|
-{
|
|
- struct fsl_mc_device_irq *irq = mc_dev->irqs[0];
|
|
-
|
|
- (void)disable_dprc_irq(mc_dev);
|
|
-
|
|
- devm_free_irq(&mc_dev->dev, irq->msi_desc->irq, &mc_dev->dev);
|
|
-
|
|
- fsl_mc_free_irqs(mc_dev);
|
|
-}
|
|
-
|
|
-/**
|
|
- * dprc_remove - callback invoked when a DPRC is being unbound from this driver
|
|
- *
|
|
- * @mc_dev: Pointer to fsl-mc device representing the DPRC
|
|
- *
|
|
- * It removes the DPRC's child objects from Linux (not from the MC) and
|
|
- * closes the DPRC device in the MC.
|
|
- * It tears down the interrupts that were configured for the DPRC device.
|
|
- * It destroys the interrupt pool associated with this MC bus.
|
|
- */
|
|
-static int dprc_remove(struct fsl_mc_device *mc_dev)
|
|
-{
|
|
- int error;
|
|
- struct fsl_mc_bus *mc_bus = to_fsl_mc_bus(mc_dev);
|
|
-
|
|
- if (WARN_ON(strcmp(mc_dev->obj_desc.type, "dprc") != 0))
|
|
- return -EINVAL;
|
|
- if (WARN_ON(!mc_dev->mc_io))
|
|
- return -EINVAL;
|
|
-
|
|
- if (WARN_ON(!mc_bus->irq_resources))
|
|
- return -EINVAL;
|
|
-
|
|
- if (dev_get_msi_domain(&mc_dev->dev))
|
|
- dprc_teardown_irq(mc_dev);
|
|
-
|
|
- device_for_each_child(&mc_dev->dev, NULL, __fsl_mc_device_remove);
|
|
-
|
|
- if (dev_get_msi_domain(&mc_dev->dev)) {
|
|
- fsl_mc_cleanup_irq_pool(mc_bus);
|
|
- dev_set_msi_domain(&mc_dev->dev, NULL);
|
|
- }
|
|
-
|
|
- fsl_mc_cleanup_all_resource_pools(mc_dev);
|
|
-
|
|
- error = dprc_close(mc_dev->mc_io, 0, mc_dev->mc_handle);
|
|
- if (error < 0)
|
|
- dev_err(&mc_dev->dev, "dprc_close() failed: %d\n", error);
|
|
-
|
|
- if (!fsl_mc_is_root_dprc(&mc_dev->dev)) {
|
|
- fsl_destroy_mc_io(mc_dev->mc_io);
|
|
- mc_dev->mc_io = NULL;
|
|
- }
|
|
-
|
|
- dev_info(&mc_dev->dev, "DPRC device unbound from driver");
|
|
- return 0;
|
|
-}
|
|
-
|
|
-static const struct fsl_mc_device_id match_id_table[] = {
|
|
- {
|
|
- .vendor = FSL_MC_VENDOR_FREESCALE,
|
|
- .obj_type = "dprc"},
|
|
- {.vendor = 0x0},
|
|
-};
|
|
-
|
|
-static struct fsl_mc_driver dprc_driver = {
|
|
- .driver = {
|
|
- .name = FSL_MC_DPRC_DRIVER_NAME,
|
|
- .owner = THIS_MODULE,
|
|
- .pm = NULL,
|
|
- },
|
|
- .match_id_table = match_id_table,
|
|
- .probe = dprc_probe,
|
|
- .remove = dprc_remove,
|
|
-};
|
|
-
|
|
-int __init dprc_driver_init(void)
|
|
-{
|
|
- return fsl_mc_driver_register(&dprc_driver);
|
|
-}
|
|
-
|
|
-void dprc_driver_exit(void)
|
|
-{
|
|
- fsl_mc_driver_unregister(&dprc_driver);
|
|
-}
|
|
--- /dev/null
|
|
+++ b/drivers/bus/fsl-mc/dprc-driver.c
|
|
@@ -0,0 +1,815 @@
|
|
+// SPDX-License-Identifier: GPL-2.0
|
|
+/*
|
|
+ * Freescale data path resource container (DPRC) driver
|
|
+ *
|
|
+ * Copyright (C) 2014-2016 Freescale Semiconductor, Inc.
|
|
+ * Author: German Rivera <German.Rivera@freescale.com>
|
|
+ *
|
|
+ */
|
|
+
|
|
+#include <linux/module.h>
|
|
+#include <linux/slab.h>
|
|
+#include <linux/interrupt.h>
|
|
+#include <linux/msi.h>
|
|
+#include <linux/fsl/mc.h>
|
|
+
|
|
+#include "fsl-mc-private.h"
|
|
+
|
|
+#define FSL_MC_DPRC_DRIVER_NAME "fsl_mc_dprc"
|
|
+
|
|
+struct fsl_mc_child_objs {
|
|
+ int child_count;
|
|
+ struct fsl_mc_obj_desc *child_array;
|
|
+};
|
|
+
|
|
+static bool fsl_mc_device_match(struct fsl_mc_device *mc_dev,
|
|
+ struct fsl_mc_obj_desc *obj_desc)
|
|
+{
|
|
+ return mc_dev->obj_desc.id == obj_desc->id &&
|
|
+ strcmp(mc_dev->obj_desc.type, obj_desc->type) == 0;
|
|
+
|
|
+}
|
|
+
|
|
+static int __fsl_mc_device_remove_if_not_in_mc(struct device *dev, void *data)
|
|
+{
|
|
+ int i;
|
|
+ struct fsl_mc_child_objs *objs;
|
|
+ struct fsl_mc_device *mc_dev;
|
|
+
|
|
+ mc_dev = to_fsl_mc_device(dev);
|
|
+ objs = data;
|
|
+
|
|
+ for (i = 0; i < objs->child_count; i++) {
|
|
+ struct fsl_mc_obj_desc *obj_desc = &objs->child_array[i];
|
|
+
|
|
+ if (strlen(obj_desc->type) != 0 &&
|
|
+ fsl_mc_device_match(mc_dev, obj_desc))
|
|
+ break;
|
|
+ }
|
|
+
|
|
+ if (i == objs->child_count)
|
|
+ fsl_mc_device_remove(mc_dev);
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+static int __fsl_mc_device_remove(struct device *dev, void *data)
|
|
+{
|
|
+ fsl_mc_device_remove(to_fsl_mc_device(dev));
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+/**
|
|
+ * dprc_remove_devices - Removes devices for objects removed from a DPRC
|
|
+ *
|
|
+ * @mc_bus_dev: pointer to the fsl-mc device that represents a DPRC object
|
|
+ * @obj_desc_array: array of object descriptors for child objects currently
|
|
+ * present in the DPRC in the MC.
|
|
+ * @num_child_objects_in_mc: number of entries in obj_desc_array
|
|
+ *
|
|
+ * Synchronizes the state of the Linux bus driver with the actual state of
|
|
+ * the MC by removing devices that represent MC objects that have
|
|
+ * been dynamically removed in the physical DPRC.
|
|
+ */
|
|
+static void dprc_remove_devices(struct fsl_mc_device *mc_bus_dev,
|
|
+ struct fsl_mc_obj_desc *obj_desc_array,
|
|
+ int num_child_objects_in_mc)
|
|
+{
|
|
+ if (num_child_objects_in_mc != 0) {
|
|
+ /*
|
|
+ * Remove child objects that are in the DPRC in Linux,
|
|
+ * but not in the MC:
|
|
+ */
|
|
+ struct fsl_mc_child_objs objs;
|
|
+
|
|
+ objs.child_count = num_child_objects_in_mc;
|
|
+ objs.child_array = obj_desc_array;
|
|
+ device_for_each_child(&mc_bus_dev->dev, &objs,
|
|
+ __fsl_mc_device_remove_if_not_in_mc);
|
|
+ } else {
|
|
+ /*
|
|
+ * There are no child objects for this DPRC in the MC.
|
|
+ * So, remove all the child devices from Linux:
|
|
+ */
|
|
+ device_for_each_child(&mc_bus_dev->dev, NULL,
|
|
+ __fsl_mc_device_remove);
|
|
+ }
|
|
+}
|
|
+
|
|
+static int __fsl_mc_device_match(struct device *dev, void *data)
|
|
+{
|
|
+ struct fsl_mc_obj_desc *obj_desc = data;
|
|
+ struct fsl_mc_device *mc_dev = to_fsl_mc_device(dev);
|
|
+
|
|
+ return fsl_mc_device_match(mc_dev, obj_desc);
|
|
+}
|
|
+
|
|
+static struct fsl_mc_device *fsl_mc_device_lookup(struct fsl_mc_obj_desc
|
|
+ *obj_desc,
|
|
+ struct fsl_mc_device
|
|
+ *mc_bus_dev)
|
|
+{
|
|
+ struct device *dev;
|
|
+
|
|
+ dev = device_find_child(&mc_bus_dev->dev, obj_desc,
|
|
+ __fsl_mc_device_match);
|
|
+
|
|
+ return dev ? to_fsl_mc_device(dev) : NULL;
|
|
+}
|
|
+
|
|
+/**
|
|
+ * check_plugged_state_change - Check change in an MC object's plugged state
|
|
+ *
|
|
+ * @mc_dev: pointer to the fsl-mc device for a given MC object
|
|
+ * @obj_desc: pointer to the MC object's descriptor in the MC
|
|
+ *
|
|
+ * If the plugged state has changed from unplugged to plugged, the fsl-mc
|
|
+ * device is bound to the corresponding device driver.
|
|
+ * If the plugged state has changed from plugged to unplugged, the fsl-mc
|
|
+ * device is unbound from the corresponding device driver.
|
|
+ */
|
|
+static void check_plugged_state_change(struct fsl_mc_device *mc_dev,
|
|
+ struct fsl_mc_obj_desc *obj_desc)
|
|
+{
|
|
+ int error;
|
|
+ u32 plugged_flag_at_mc =
|
|
+ obj_desc->state & FSL_MC_OBJ_STATE_PLUGGED;
|
|
+
|
|
+ if (plugged_flag_at_mc !=
|
|
+ (mc_dev->obj_desc.state & FSL_MC_OBJ_STATE_PLUGGED)) {
|
|
+ if (plugged_flag_at_mc) {
|
|
+ mc_dev->obj_desc.state |= FSL_MC_OBJ_STATE_PLUGGED;
|
|
+ error = device_attach(&mc_dev->dev);
|
|
+ if (error < 0) {
|
|
+ dev_err(&mc_dev->dev,
|
|
+ "device_attach() failed: %d\n",
|
|
+ error);
|
|
+ }
|
|
+ } else {
|
|
+ mc_dev->obj_desc.state &= ~FSL_MC_OBJ_STATE_PLUGGED;
|
|
+ device_release_driver(&mc_dev->dev);
|
|
+ }
|
|
+ }
|
|
+}
|
|
+
|
|
+/**
|
|
+ * dprc_add_new_devices - Adds devices to the logical bus for a DPRC
|
|
+ *
|
|
+ * @mc_bus_dev: pointer to the fsl-mc device that represents a DPRC object
|
|
+ * @driver_override: driver override to apply to new objects found in the
|
|
+ * DPRC, or NULL, if none.
|
|
+ * @obj_desc_array: array of device descriptors for child devices currently
|
|
+ * present in the physical DPRC.
|
|
+ * @num_child_objects_in_mc: number of entries in obj_desc_array
|
|
+ *
|
|
+ * Synchronizes the state of the Linux bus driver with the actual
|
|
+ * state of the MC by adding objects that have been newly discovered
|
|
+ * in the physical DPRC.
|
|
+ */
|
|
+static void dprc_add_new_devices(struct fsl_mc_device *mc_bus_dev,
|
|
+ const char *driver_override,
|
|
+ struct fsl_mc_obj_desc *obj_desc_array,
|
|
+ int num_child_objects_in_mc)
|
|
+{
|
|
+ int error;
|
|
+ int i;
|
|
+
|
|
+ for (i = 0; i < num_child_objects_in_mc; i++) {
|
|
+ struct fsl_mc_device *child_dev;
|
|
+ struct fsl_mc_obj_desc *obj_desc = &obj_desc_array[i];
|
|
+
|
|
+ if (strlen(obj_desc->type) == 0)
|
|
+ continue;
|
|
+
|
|
+ /*
|
|
+ * Check if device is already known to Linux:
|
|
+ */
|
|
+ child_dev = fsl_mc_device_lookup(obj_desc, mc_bus_dev);
|
|
+ if (child_dev) {
|
|
+ check_plugged_state_change(child_dev, obj_desc);
|
|
+ put_device(&child_dev->dev);
|
|
+ continue;
|
|
+ }
|
|
+
|
|
+ error = fsl_mc_device_add(obj_desc, NULL, &mc_bus_dev->dev,
|
|
+ driver_override, &child_dev);
|
|
+ if (error < 0)
|
|
+ continue;
|
|
+ }
|
|
+}
|
|
+
|
|
+/**
|
|
+ * dprc_scan_objects - Discover objects in a DPRC
|
|
+ *
|
|
+ * @mc_bus_dev: pointer to the fsl-mc device that represents a DPRC object
|
|
+ * @driver_override: driver override to apply to new objects found in the
|
|
+ * DPRC, or NULL, if none.
|
|
+ * @total_irq_count: If argument is provided the function populates the
|
|
+ * total number of IRQs created by objects in the DPRC.
|
|
+ *
|
|
+ * Detects objects added and removed from a DPRC and synchronizes the
|
|
+ * state of the Linux bus driver, MC by adding and removing
|
|
+ * devices accordingly.
|
|
+ * Two types of devices can be found in a DPRC: allocatable objects (e.g.,
|
|
+ * dpbp, dpmcp) and non-allocatable devices (e.g., dprc, dpni).
|
|
+ * All allocatable devices needed to be probed before all non-allocatable
|
|
+ * devices, to ensure that device drivers for non-allocatable
|
|
+ * devices can allocate any type of allocatable devices.
|
|
+ * That is, we need to ensure that the corresponding resource pools are
|
|
+ * populated before they can get allocation requests from probe callbacks
|
|
+ * of the device drivers for the non-allocatable devices.
|
|
+ */
|
|
+int dprc_scan_objects(struct fsl_mc_device *mc_bus_dev,
|
|
+ const char *driver_override,
|
|
+ unsigned int *total_irq_count)
|
|
+{
|
|
+ int num_child_objects;
|
|
+ int dprc_get_obj_failures;
|
|
+ int error;
|
|
+ unsigned int irq_count = mc_bus_dev->obj_desc.irq_count;
|
|
+ struct fsl_mc_obj_desc *child_obj_desc_array = NULL;
|
|
+ struct fsl_mc_bus *mc_bus = to_fsl_mc_bus(mc_bus_dev);
|
|
+
|
|
+ error = dprc_get_obj_count(mc_bus_dev->mc_io,
|
|
+ 0,
|
|
+ mc_bus_dev->mc_handle,
|
|
+ &num_child_objects);
|
|
+ if (error < 0) {
|
|
+ dev_err(&mc_bus_dev->dev, "dprc_get_obj_count() failed: %d\n",
|
|
+ error);
|
|
+ return error;
|
|
+ }
|
|
+
|
|
+ if (num_child_objects != 0) {
|
|
+ int i;
|
|
+
|
|
+ child_obj_desc_array =
|
|
+ devm_kmalloc_array(&mc_bus_dev->dev, num_child_objects,
|
|
+ sizeof(*child_obj_desc_array),
|
|
+ GFP_KERNEL);
|
|
+ if (!child_obj_desc_array)
|
|
+ return -ENOMEM;
|
|
+
|
|
+ /*
|
|
+ * Discover objects currently present in the physical DPRC:
|
|
+ */
|
|
+ dprc_get_obj_failures = 0;
|
|
+ for (i = 0; i < num_child_objects; i++) {
|
|
+ struct fsl_mc_obj_desc *obj_desc =
|
|
+ &child_obj_desc_array[i];
|
|
+
|
|
+ error = dprc_get_obj(mc_bus_dev->mc_io,
|
|
+ 0,
|
|
+ mc_bus_dev->mc_handle,
|
|
+ i, obj_desc);
|
|
+ if (error < 0) {
|
|
+ dev_err(&mc_bus_dev->dev,
|
|
+ "dprc_get_obj(i=%d) failed: %d\n",
|
|
+ i, error);
|
|
+ /*
|
|
+ * Mark the obj entry as "invalid", by using the
|
|
+ * empty string as obj type:
|
|
+ */
|
|
+ obj_desc->type[0] = '\0';
|
|
+ obj_desc->id = error;
|
|
+ dprc_get_obj_failures++;
|
|
+ continue;
|
|
+ }
|
|
+
|
|
+ /*
|
|
+ * add a quirk for all versions of dpsec < 4.0...none
|
|
+ * are coherent regardless of what the MC reports.
|
|
+ */
|
|
+ if ((strcmp(obj_desc->type, "dpseci") == 0) &&
|
|
+ (obj_desc->ver_major < 4))
|
|
+ obj_desc->flags |=
|
|
+ FSL_MC_OBJ_FLAG_NO_MEM_SHAREABILITY;
|
|
+
|
|
+ irq_count += obj_desc->irq_count;
|
|
+ dev_dbg(&mc_bus_dev->dev,
|
|
+ "Discovered object: type %s, id %d\n",
|
|
+ obj_desc->type, obj_desc->id);
|
|
+ }
|
|
+
|
|
+ if (dprc_get_obj_failures != 0) {
|
|
+ dev_err(&mc_bus_dev->dev,
|
|
+ "%d out of %d devices could not be retrieved\n",
|
|
+ dprc_get_obj_failures, num_child_objects);
|
|
+ }
|
|
+ }
|
|
+
|
|
+ /*
|
|
+ * Allocate IRQ's before binding the scanned devices with their
|
|
+ * respective drivers.
|
|
+ */
|
|
+ if (dev_get_msi_domain(&mc_bus_dev->dev) && !mc_bus->irq_resources) {
|
|
+ if (irq_count > FSL_MC_IRQ_POOL_MAX_TOTAL_IRQS) {
|
|
+ dev_warn(&mc_bus_dev->dev,
|
|
+ "IRQs needed (%u) exceed IRQs preallocated (%u)\n",
|
|
+ irq_count, FSL_MC_IRQ_POOL_MAX_TOTAL_IRQS);
|
|
+ }
|
|
+
|
|
+ error = fsl_mc_populate_irq_pool(mc_bus,
|
|
+ FSL_MC_IRQ_POOL_MAX_TOTAL_IRQS);
|
|
+ if (error < 0)
|
|
+ return error;
|
|
+ }
|
|
+
|
|
+ if (total_irq_count)
|
|
+ *total_irq_count = irq_count;
|
|
+
|
|
+ dprc_remove_devices(mc_bus_dev, child_obj_desc_array,
|
|
+ num_child_objects);
|
|
+
|
|
+ dprc_add_new_devices(mc_bus_dev, driver_override, child_obj_desc_array,
|
|
+ num_child_objects);
|
|
+
|
|
+ if (child_obj_desc_array)
|
|
+ devm_kfree(&mc_bus_dev->dev, child_obj_desc_array);
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+/**
|
|
+ * dprc_scan_container - Scans a physical DPRC and synchronizes Linux bus state
|
|
+ *
|
|
+ * @mc_bus_dev: pointer to the fsl-mc device that represents a DPRC object
|
|
+ *
|
|
+ * Scans the physical DPRC and synchronizes the state of the Linux
|
|
+ * bus driver with the actual state of the MC by adding and removing
|
|
+ * devices as appropriate.
|
|
+ */
|
|
+static int dprc_scan_container(struct fsl_mc_device *mc_bus_dev)
|
|
+{
|
|
+ int error;
|
|
+ struct fsl_mc_bus *mc_bus = to_fsl_mc_bus(mc_bus_dev);
|
|
+
|
|
+ fsl_mc_init_all_resource_pools(mc_bus_dev);
|
|
+
|
|
+ /*
|
|
+ * Discover objects in the DPRC:
|
|
+ */
|
|
+ mutex_lock(&mc_bus->scan_mutex);
|
|
+ error = dprc_scan_objects(mc_bus_dev, NULL, NULL);
|
|
+ mutex_unlock(&mc_bus->scan_mutex);
|
|
+ if (error < 0) {
|
|
+ fsl_mc_cleanup_all_resource_pools(mc_bus_dev);
|
|
+ return error;
|
|
+ }
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+/**
|
|
+ * dprc_irq0_handler - Regular ISR for DPRC interrupt 0
|
|
+ *
|
|
+ * @irq: IRQ number of the interrupt being handled
|
|
+ * @arg: Pointer to device structure
|
|
+ */
|
|
+static irqreturn_t dprc_irq0_handler(int irq_num, void *arg)
|
|
+{
|
|
+ return IRQ_WAKE_THREAD;
|
|
+}
|
|
+
|
|
+/**
|
|
+ * dprc_irq0_handler_thread - Handler thread function for DPRC interrupt 0
|
|
+ *
|
|
+ * @irq: IRQ number of the interrupt being handled
|
|
+ * @arg: Pointer to device structure
|
|
+ */
|
|
+static irqreturn_t dprc_irq0_handler_thread(int irq_num, void *arg)
|
|
+{
|
|
+ int error;
|
|
+ u32 status;
|
|
+ struct device *dev = arg;
|
|
+ struct fsl_mc_device *mc_dev = to_fsl_mc_device(dev);
|
|
+ struct fsl_mc_bus *mc_bus = to_fsl_mc_bus(mc_dev);
|
|
+ struct fsl_mc_io *mc_io = mc_dev->mc_io;
|
|
+ struct msi_desc *msi_desc = mc_dev->irqs[0]->msi_desc;
|
|
+
|
|
+ dev_dbg(dev, "DPRC IRQ %d triggered on CPU %u\n",
|
|
+ irq_num, smp_processor_id());
|
|
+
|
|
+ if (!(mc_dev->flags & FSL_MC_IS_DPRC))
|
|
+ return IRQ_HANDLED;
|
|
+
|
|
+ mutex_lock(&mc_bus->scan_mutex);
|
|
+ if (!msi_desc || msi_desc->irq != (u32)irq_num)
|
|
+ goto out;
|
|
+
|
|
+ status = 0;
|
|
+ error = dprc_get_irq_status(mc_io, 0, mc_dev->mc_handle, 0,
|
|
+ &status);
|
|
+ if (error < 0) {
|
|
+ dev_err(dev,
|
|
+ "dprc_get_irq_status() failed: %d\n", error);
|
|
+ goto out;
|
|
+ }
|
|
+
|
|
+ error = dprc_clear_irq_status(mc_io, 0, mc_dev->mc_handle, 0,
|
|
+ status);
|
|
+ if (error < 0) {
|
|
+ dev_err(dev,
|
|
+ "dprc_clear_irq_status() failed: %d\n", error);
|
|
+ goto out;
|
|
+ }
|
|
+
|
|
+ if (status & (DPRC_IRQ_EVENT_OBJ_ADDED |
|
|
+ DPRC_IRQ_EVENT_OBJ_REMOVED |
|
|
+ DPRC_IRQ_EVENT_CONTAINER_DESTROYED |
|
|
+ DPRC_IRQ_EVENT_OBJ_DESTROYED |
|
|
+ DPRC_IRQ_EVENT_OBJ_CREATED)) {
|
|
+ unsigned int irq_count;
|
|
+
|
|
+ error = dprc_scan_objects(mc_dev, NULL, &irq_count);
|
|
+ if (error < 0) {
|
|
+ /*
|
|
+ * If the error is -ENXIO, we ignore it, as it indicates
|
|
+ * that the object scan was aborted, as we detected that
|
|
+ * an object was removed from the DPRC in the MC, while
|
|
+ * we were scanning the DPRC.
|
|
+ */
|
|
+ if (error != -ENXIO) {
|
|
+ dev_err(dev, "dprc_scan_objects() failed: %d\n",
|
|
+ error);
|
|
+ }
|
|
+
|
|
+ goto out;
|
|
+ }
|
|
+
|
|
+ if (irq_count > FSL_MC_IRQ_POOL_MAX_TOTAL_IRQS) {
|
|
+ dev_warn(dev,
|
|
+ "IRQs needed (%u) exceed IRQs preallocated (%u)\n",
|
|
+ irq_count, FSL_MC_IRQ_POOL_MAX_TOTAL_IRQS);
|
|
+ }
|
|
+ }
|
|
+
|
|
+out:
|
|
+ mutex_unlock(&mc_bus->scan_mutex);
|
|
+ return IRQ_HANDLED;
|
|
+}
|
|
+
|
|
+/*
|
|
+ * Disable and clear interrupt for a given DPRC object
|
|
+ */
|
|
+static int disable_dprc_irq(struct fsl_mc_device *mc_dev)
|
|
+{
|
|
+ int error;
|
|
+ struct fsl_mc_io *mc_io = mc_dev->mc_io;
|
|
+
|
|
+ /*
|
|
+ * Disable generation of interrupt, while we configure it:
|
|
+ */
|
|
+ error = dprc_set_irq_enable(mc_io, 0, mc_dev->mc_handle, 0, 0);
|
|
+ if (error < 0) {
|
|
+ dev_err(&mc_dev->dev,
|
|
+ "Disabling DPRC IRQ failed: dprc_set_irq_enable() failed: %d\n",
|
|
+ error);
|
|
+ return error;
|
|
+ }
|
|
+
|
|
+ /*
|
|
+ * Disable all interrupt causes for the interrupt:
|
|
+ */
|
|
+ error = dprc_set_irq_mask(mc_io, 0, mc_dev->mc_handle, 0, 0x0);
|
|
+ if (error < 0) {
|
|
+ dev_err(&mc_dev->dev,
|
|
+ "Disabling DPRC IRQ failed: dprc_set_irq_mask() failed: %d\n",
|
|
+ error);
|
|
+ return error;
|
|
+ }
|
|
+
|
|
+ /*
|
|
+ * Clear any leftover interrupts:
|
|
+ */
|
|
+ error = dprc_clear_irq_status(mc_io, 0, mc_dev->mc_handle, 0, ~0x0U);
|
|
+ if (error < 0) {
|
|
+ dev_err(&mc_dev->dev,
|
|
+ "Disabling DPRC IRQ failed: dprc_clear_irq_status() failed: %d\n",
|
|
+ error);
|
|
+ return error;
|
|
+ }
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+static int register_dprc_irq_handler(struct fsl_mc_device *mc_dev)
|
|
+{
|
|
+ int error;
|
|
+ struct fsl_mc_device_irq *irq = mc_dev->irqs[0];
|
|
+
|
|
+ /*
|
|
+ * NOTE: devm_request_threaded_irq() invokes the device-specific
|
|
+ * function that programs the MSI physically in the device
|
|
+ */
|
|
+ error = devm_request_threaded_irq(&mc_dev->dev,
|
|
+ irq->msi_desc->irq,
|
|
+ dprc_irq0_handler,
|
|
+ dprc_irq0_handler_thread,
|
|
+ IRQF_NO_SUSPEND | IRQF_ONESHOT,
|
|
+ dev_name(&mc_dev->dev),
|
|
+ &mc_dev->dev);
|
|
+ if (error < 0) {
|
|
+ dev_err(&mc_dev->dev,
|
|
+ "devm_request_threaded_irq() failed: %d\n",
|
|
+ error);
|
|
+ return error;
|
|
+ }
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+static int enable_dprc_irq(struct fsl_mc_device *mc_dev)
|
|
+{
|
|
+ int error;
|
|
+
|
|
+ /*
|
|
+ * Enable all interrupt causes for the interrupt:
|
|
+ */
|
|
+ error = dprc_set_irq_mask(mc_dev->mc_io, 0, mc_dev->mc_handle, 0,
|
|
+ ~0x0u);
|
|
+ if (error < 0) {
|
|
+ dev_err(&mc_dev->dev,
|
|
+ "Enabling DPRC IRQ failed: dprc_set_irq_mask() failed: %d\n",
|
|
+ error);
|
|
+
|
|
+ return error;
|
|
+ }
|
|
+
|
|
+ /*
|
|
+ * Enable generation of the interrupt:
|
|
+ */
|
|
+ error = dprc_set_irq_enable(mc_dev->mc_io, 0, mc_dev->mc_handle, 0, 1);
|
|
+ if (error < 0) {
|
|
+ dev_err(&mc_dev->dev,
|
|
+ "Enabling DPRC IRQ failed: dprc_set_irq_enable() failed: %d\n",
|
|
+ error);
|
|
+
|
|
+ return error;
|
|
+ }
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+/*
|
|
+ * Setup interrupt for a given DPRC device
|
|
+ */
|
|
+static int dprc_setup_irq(struct fsl_mc_device *mc_dev)
|
|
+{
|
|
+ int error;
|
|
+
|
|
+ error = fsl_mc_allocate_irqs(mc_dev);
|
|
+ if (error < 0)
|
|
+ return error;
|
|
+
|
|
+ error = disable_dprc_irq(mc_dev);
|
|
+ if (error < 0)
|
|
+ goto error_free_irqs;
|
|
+
|
|
+ error = register_dprc_irq_handler(mc_dev);
|
|
+ if (error < 0)
|
|
+ goto error_free_irqs;
|
|
+
|
|
+ error = enable_dprc_irq(mc_dev);
|
|
+ if (error < 0)
|
|
+ goto error_free_irqs;
|
|
+
|
|
+ return 0;
|
|
+
|
|
+error_free_irqs:
|
|
+ fsl_mc_free_irqs(mc_dev);
|
|
+ return error;
|
|
+}
|
|
+
|
|
+/**
|
|
+ * dprc_probe - callback invoked when a DPRC is being bound to this driver
|
|
+ *
|
|
+ * @mc_dev: Pointer to fsl-mc device representing a DPRC
|
|
+ *
|
|
+ * It opens the physical DPRC in the MC.
|
|
+ * It scans the DPRC to discover the MC objects contained in it.
|
|
+ * It creates the interrupt pool for the MC bus associated with the DPRC.
|
|
+ * It configures the interrupts for the DPRC device itself.
|
|
+ */
|
|
+static int dprc_probe(struct fsl_mc_device *mc_dev)
|
|
+{
|
|
+ int error;
|
|
+ size_t region_size;
|
|
+ struct device *parent_dev = mc_dev->dev.parent;
|
|
+ struct fsl_mc_bus *mc_bus = to_fsl_mc_bus(mc_dev);
|
|
+ bool mc_io_created = false;
|
|
+ bool msi_domain_set = false;
|
|
+ u16 major_ver, minor_ver;
|
|
+
|
|
+ if (!is_fsl_mc_bus_dprc(mc_dev))
|
|
+ return -EINVAL;
|
|
+
|
|
+ if (dev_get_msi_domain(&mc_dev->dev))
|
|
+ return -EINVAL;
|
|
+
|
|
+ if (!mc_dev->mc_io) {
|
|
+ /*
|
|
+ * This is a child DPRC:
|
|
+ */
|
|
+ if (!dev_is_fsl_mc(parent_dev))
|
|
+ return -EINVAL;
|
|
+
|
|
+ if (mc_dev->obj_desc.region_count == 0)
|
|
+ return -EINVAL;
|
|
+
|
|
+ region_size = resource_size(mc_dev->regions);
|
|
+
|
|
+ error = fsl_create_mc_io(&mc_dev->dev,
|
|
+ mc_dev->regions[0].start,
|
|
+ region_size,
|
|
+ NULL,
|
|
+ FSL_MC_IO_ATOMIC_CONTEXT_PORTAL,
|
|
+ &mc_dev->mc_io);
|
|
+ if (error < 0)
|
|
+ return error;
|
|
+
|
|
+ mc_io_created = true;
|
|
+
|
|
+ /*
|
|
+ * Inherit parent MSI domain:
|
|
+ */
|
|
+ dev_set_msi_domain(&mc_dev->dev,
|
|
+ dev_get_msi_domain(parent_dev));
|
|
+ msi_domain_set = true;
|
|
+ } else {
|
|
+ /*
|
|
+ * This is a root DPRC
|
|
+ */
|
|
+ struct irq_domain *mc_msi_domain;
|
|
+
|
|
+ if (dev_is_fsl_mc(parent_dev))
|
|
+ return -EINVAL;
|
|
+
|
|
+ error = fsl_mc_find_msi_domain(parent_dev,
|
|
+ &mc_msi_domain);
|
|
+ if (error < 0) {
|
|
+ dev_warn(&mc_dev->dev,
|
|
+ "WARNING: MC bus without interrupt support\n");
|
|
+ } else {
|
|
+ dev_set_msi_domain(&mc_dev->dev, mc_msi_domain);
|
|
+ msi_domain_set = true;
|
|
+ }
|
|
+ }
|
|
+
|
|
+ error = dprc_open(mc_dev->mc_io, 0, mc_dev->obj_desc.id,
|
|
+ &mc_dev->mc_handle);
|
|
+ if (error < 0) {
|
|
+ dev_err(&mc_dev->dev, "dprc_open() failed: %d\n", error);
|
|
+ goto error_cleanup_msi_domain;
|
|
+ }
|
|
+
|
|
+ error = dprc_get_attributes(mc_dev->mc_io, 0, mc_dev->mc_handle,
|
|
+ &mc_bus->dprc_attr);
|
|
+ if (error < 0) {
|
|
+ dev_err(&mc_dev->dev, "dprc_get_attributes() failed: %d\n",
|
|
+ error);
|
|
+ goto error_cleanup_open;
|
|
+ }
|
|
+
|
|
+ error = dprc_get_api_version(mc_dev->mc_io, 0,
|
|
+ &major_ver,
|
|
+ &minor_ver);
|
|
+ if (error < 0) {
|
|
+ dev_err(&mc_dev->dev, "dprc_get_api_version() failed: %d\n",
|
|
+ error);
|
|
+ goto error_cleanup_open;
|
|
+ }
|
|
+
|
|
+ if (major_ver < DPRC_MIN_VER_MAJOR ||
|
|
+ (major_ver == DPRC_MIN_VER_MAJOR &&
|
|
+ minor_ver < DPRC_MIN_VER_MINOR)) {
|
|
+ dev_err(&mc_dev->dev,
|
|
+ "ERROR: DPRC version %d.%d not supported\n",
|
|
+ major_ver, minor_ver);
|
|
+ error = -ENOTSUPP;
|
|
+ goto error_cleanup_open;
|
|
+ }
|
|
+
|
|
+ mutex_init(&mc_bus->scan_mutex);
|
|
+
|
|
+ /*
|
|
+ * Discover MC objects in DPRC object:
|
|
+ */
|
|
+ error = dprc_scan_container(mc_dev);
|
|
+ if (error < 0)
|
|
+ goto error_cleanup_open;
|
|
+
|
|
+ /*
|
|
+ * Configure interrupt for the DPRC object associated with this MC bus:
|
|
+ */
|
|
+ error = dprc_setup_irq(mc_dev);
|
|
+ if (error < 0)
|
|
+ goto error_cleanup_open;
|
|
+
|
|
+ dev_info(&mc_dev->dev, "DPRC device bound to driver");
|
|
+ return 0;
|
|
+
|
|
+error_cleanup_open:
|
|
+ (void)dprc_close(mc_dev->mc_io, 0, mc_dev->mc_handle);
|
|
+
|
|
+error_cleanup_msi_domain:
|
|
+ if (msi_domain_set)
|
|
+ dev_set_msi_domain(&mc_dev->dev, NULL);
|
|
+
|
|
+ if (mc_io_created) {
|
|
+ fsl_destroy_mc_io(mc_dev->mc_io);
|
|
+ mc_dev->mc_io = NULL;
|
|
+ }
|
|
+
|
|
+ return error;
|
|
+}
|
|
+
|
|
+/*
|
|
+ * Tear down interrupt for a given DPRC object
|
|
+ */
|
|
+static void dprc_teardown_irq(struct fsl_mc_device *mc_dev)
|
|
+{
|
|
+ struct fsl_mc_device_irq *irq = mc_dev->irqs[0];
|
|
+
|
|
+ (void)disable_dprc_irq(mc_dev);
|
|
+
|
|
+ devm_free_irq(&mc_dev->dev, irq->msi_desc->irq, &mc_dev->dev);
|
|
+
|
|
+ fsl_mc_free_irqs(mc_dev);
|
|
+}
|
|
+
|
|
+/**
|
|
+ * dprc_remove - callback invoked when a DPRC is being unbound from this driver
|
|
+ *
|
|
+ * @mc_dev: Pointer to fsl-mc device representing the DPRC
|
|
+ *
|
|
+ * It removes the DPRC's child objects from Linux (not from the MC) and
|
|
+ * closes the DPRC device in the MC.
|
|
+ * It tears down the interrupts that were configured for the DPRC device.
|
|
+ * It destroys the interrupt pool associated with this MC bus.
|
|
+ */
|
|
+static int dprc_remove(struct fsl_mc_device *mc_dev)
|
|
+{
|
|
+ int error;
|
|
+ struct fsl_mc_bus *mc_bus = to_fsl_mc_bus(mc_dev);
|
|
+
|
|
+ if (!is_fsl_mc_bus_dprc(mc_dev))
|
|
+ return -EINVAL;
|
|
+ if (!mc_dev->mc_io)
|
|
+ return -EINVAL;
|
|
+
|
|
+ if (!mc_bus->irq_resources)
|
|
+ return -EINVAL;
|
|
+
|
|
+ if (dev_get_msi_domain(&mc_dev->dev))
|
|
+ dprc_teardown_irq(mc_dev);
|
|
+
|
|
+ device_for_each_child(&mc_dev->dev, NULL, __fsl_mc_device_remove);
|
|
+
|
|
+ if (dev_get_msi_domain(&mc_dev->dev)) {
|
|
+ fsl_mc_cleanup_irq_pool(mc_bus);
|
|
+ dev_set_msi_domain(&mc_dev->dev, NULL);
|
|
+ }
|
|
+
|
|
+ fsl_mc_cleanup_all_resource_pools(mc_dev);
|
|
+
|
|
+ error = dprc_close(mc_dev->mc_io, 0, mc_dev->mc_handle);
|
|
+ if (error < 0)
|
|
+ dev_err(&mc_dev->dev, "dprc_close() failed: %d\n", error);
|
|
+
|
|
+ if (!fsl_mc_is_root_dprc(&mc_dev->dev)) {
|
|
+ fsl_destroy_mc_io(mc_dev->mc_io);
|
|
+ mc_dev->mc_io = NULL;
|
|
+ }
|
|
+
|
|
+ dev_info(&mc_dev->dev, "DPRC device unbound from driver");
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+static const struct fsl_mc_device_id match_id_table[] = {
|
|
+ {
|
|
+ .vendor = FSL_MC_VENDOR_FREESCALE,
|
|
+ .obj_type = "dprc"},
|
|
+ {.vendor = 0x0},
|
|
+};
|
|
+
|
|
+static struct fsl_mc_driver dprc_driver = {
|
|
+ .driver = {
|
|
+ .name = FSL_MC_DPRC_DRIVER_NAME,
|
|
+ .owner = THIS_MODULE,
|
|
+ .pm = NULL,
|
|
+ },
|
|
+ .match_id_table = match_id_table,
|
|
+ .probe = dprc_probe,
|
|
+ .remove = dprc_remove,
|
|
+};
|
|
+
|
|
+int __init dprc_driver_init(void)
|
|
+{
|
|
+ return fsl_mc_driver_register(&dprc_driver);
|
|
+}
|
|
+
|
|
+void dprc_driver_exit(void)
|
|
+{
|
|
+ fsl_mc_driver_unregister(&dprc_driver);
|
|
+}
|
|
--- a/drivers/staging/fsl-mc/bus/dprc.c
|
|
+++ /dev/null
|
|
@@ -1,757 +0,0 @@
|
|
-// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
|
|
-/*
|
|
- * Copyright 2013-2016 Freescale Semiconductor Inc.
|
|
- *
|
|
- */
|
|
-#include <linux/kernel.h>
|
|
-#include "../include/mc.h"
|
|
-#include "dprc.h"
|
|
-
|
|
-#include "dprc-cmd.h"
|
|
-
|
|
-/**
|
|
- * dprc_open() - Open DPRC object for use
|
|
- * @mc_io: Pointer to MC portal's I/O object
|
|
- * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
|
|
- * @container_id: Container ID to open
|
|
- * @token: Returned token of DPRC object
|
|
- *
|
|
- * Return: '0' on Success; Error code otherwise.
|
|
- *
|
|
- * @warning Required before any operation on the object.
|
|
- */
|
|
-int dprc_open(struct fsl_mc_io *mc_io,
|
|
- u32 cmd_flags,
|
|
- int container_id,
|
|
- u16 *token)
|
|
-{
|
|
- struct mc_command cmd = { 0 };
|
|
- struct dprc_cmd_open *cmd_params;
|
|
- int err;
|
|
-
|
|
- /* prepare command */
|
|
- cmd.header = mc_encode_cmd_header(DPRC_CMDID_OPEN, cmd_flags,
|
|
- 0);
|
|
- cmd_params = (struct dprc_cmd_open *)cmd.params;
|
|
- cmd_params->container_id = cpu_to_le32(container_id);
|
|
-
|
|
- /* send command to mc*/
|
|
- err = mc_send_command(mc_io, &cmd);
|
|
- if (err)
|
|
- return err;
|
|
-
|
|
- /* retrieve response parameters */
|
|
- *token = mc_cmd_hdr_read_token(&cmd);
|
|
-
|
|
- return 0;
|
|
-}
|
|
-EXPORT_SYMBOL(dprc_open);
|
|
-
|
|
-/**
|
|
- * dprc_close() - Close the control session of the object
|
|
- * @mc_io: Pointer to MC portal's I/O object
|
|
- * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
|
|
- * @token: Token of DPRC object
|
|
- *
|
|
- * After this function is called, no further operations are
|
|
- * allowed on the object without opening a new control session.
|
|
- *
|
|
- * Return: '0' on Success; Error code otherwise.
|
|
- */
|
|
-int dprc_close(struct fsl_mc_io *mc_io,
|
|
- u32 cmd_flags,
|
|
- u16 token)
|
|
-{
|
|
- struct mc_command cmd = { 0 };
|
|
-
|
|
- /* prepare command */
|
|
- cmd.header = mc_encode_cmd_header(DPRC_CMDID_CLOSE, cmd_flags,
|
|
- token);
|
|
-
|
|
- /* send command to mc*/
|
|
- return mc_send_command(mc_io, &cmd);
|
|
-}
|
|
-EXPORT_SYMBOL(dprc_close);
|
|
-
|
|
-/**
|
|
- * dprc_get_irq() - Get IRQ information from the DPRC.
|
|
- * @mc_io: Pointer to MC portal's I/O object
|
|
- * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
|
|
- * @token: Token of DPRC object
|
|
- * @irq_index: The interrupt index to configure
|
|
- * @type: Interrupt type: 0 represents message interrupt
|
|
- * type (both irq_addr and irq_val are valid)
|
|
- * @irq_cfg: IRQ attributes
|
|
- *
|
|
- * Return: '0' on Success; Error code otherwise.
|
|
- */
|
|
-int dprc_get_irq(struct fsl_mc_io *mc_io,
|
|
- u32 cmd_flags,
|
|
- u16 token,
|
|
- u8 irq_index,
|
|
- int *type,
|
|
- struct dprc_irq_cfg *irq_cfg)
|
|
-{
|
|
- struct mc_command cmd = { 0 };
|
|
- struct dprc_cmd_get_irq *cmd_params;
|
|
- struct dprc_rsp_get_irq *rsp_params;
|
|
- int err;
|
|
-
|
|
- /* prepare command */
|
|
- cmd.header = mc_encode_cmd_header(DPRC_CMDID_GET_IRQ,
|
|
- cmd_flags,
|
|
- token);
|
|
- cmd_params = (struct dprc_cmd_get_irq *)cmd.params;
|
|
- cmd_params->irq_index = irq_index;
|
|
-
|
|
- /* send command to mc*/
|
|
- err = mc_send_command(mc_io, &cmd);
|
|
- if (err)
|
|
- return err;
|
|
-
|
|
- /* retrieve response parameters */
|
|
- rsp_params = (struct dprc_rsp_get_irq *)cmd.params;
|
|
- irq_cfg->val = le32_to_cpu(rsp_params->irq_val);
|
|
- irq_cfg->paddr = le64_to_cpu(rsp_params->irq_addr);
|
|
- irq_cfg->irq_num = le32_to_cpu(rsp_params->irq_num);
|
|
- *type = le32_to_cpu(rsp_params->type);
|
|
-
|
|
- return 0;
|
|
-}
|
|
-
|
|
-/**
|
|
- * dprc_set_irq() - Set IRQ information for the DPRC to trigger an interrupt.
|
|
- * @mc_io: Pointer to MC portal's I/O object
|
|
- * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
|
|
- * @token: Token of DPRC object
|
|
- * @irq_index: Identifies the interrupt index to configure
|
|
- * @irq_cfg: IRQ configuration
|
|
- *
|
|
- * Return: '0' on Success; Error code otherwise.
|
|
- */
|
|
-int dprc_set_irq(struct fsl_mc_io *mc_io,
|
|
- u32 cmd_flags,
|
|
- u16 token,
|
|
- u8 irq_index,
|
|
- struct dprc_irq_cfg *irq_cfg)
|
|
-{
|
|
- struct mc_command cmd = { 0 };
|
|
- struct dprc_cmd_set_irq *cmd_params;
|
|
-
|
|
- /* prepare command */
|
|
- cmd.header = mc_encode_cmd_header(DPRC_CMDID_SET_IRQ,
|
|
- cmd_flags,
|
|
- token);
|
|
- cmd_params = (struct dprc_cmd_set_irq *)cmd.params;
|
|
- cmd_params->irq_val = cpu_to_le32(irq_cfg->val);
|
|
- cmd_params->irq_index = irq_index;
|
|
- cmd_params->irq_addr = cpu_to_le64(irq_cfg->paddr);
|
|
- cmd_params->irq_num = cpu_to_le32(irq_cfg->irq_num);
|
|
-
|
|
- /* send command to mc*/
|
|
- return mc_send_command(mc_io, &cmd);
|
|
-}
|
|
-
|
|
-/**
|
|
- * dprc_get_irq_enable() - Get overall interrupt state.
|
|
- * @mc_io: Pointer to MC portal's I/O object
|
|
- * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
|
|
- * @token: Token of DPRC object
|
|
- * @irq_index: The interrupt index to configure
|
|
- * @en: Returned interrupt state - enable = 1, disable = 0
|
|
- *
|
|
- * Return: '0' on Success; Error code otherwise.
|
|
- */
|
|
-int dprc_get_irq_enable(struct fsl_mc_io *mc_io,
|
|
- u32 cmd_flags,
|
|
- u16 token,
|
|
- u8 irq_index,
|
|
- u8 *en)
|
|
-{
|
|
- struct mc_command cmd = { 0 };
|
|
- struct dprc_cmd_get_irq_enable *cmd_params;
|
|
- struct dprc_rsp_get_irq_enable *rsp_params;
|
|
- int err;
|
|
-
|
|
- /* prepare command */
|
|
- cmd.header = mc_encode_cmd_header(DPRC_CMDID_GET_IRQ_ENABLE,
|
|
- cmd_flags, token);
|
|
- cmd_params = (struct dprc_cmd_get_irq_enable *)cmd.params;
|
|
- cmd_params->irq_index = irq_index;
|
|
-
|
|
- /* send command to mc*/
|
|
- err = mc_send_command(mc_io, &cmd);
|
|
- if (err)
|
|
- return err;
|
|
-
|
|
- /* retrieve response parameters */
|
|
- rsp_params = (struct dprc_rsp_get_irq_enable *)cmd.params;
|
|
- *en = rsp_params->enabled & DPRC_ENABLE;
|
|
-
|
|
- return 0;
|
|
-}
|
|
-
|
|
-/**
|
|
- * dprc_set_irq_enable() - Set overall interrupt state.
|
|
- * @mc_io: Pointer to MC portal's I/O object
|
|
- * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
|
|
- * @token: Token of DPRC object
|
|
- * @irq_index: The interrupt index to configure
|
|
- * @en: Interrupt state - enable = 1, disable = 0
|
|
- *
|
|
- * Allows GPP software to control when interrupts are generated.
|
|
- * Each interrupt can have up to 32 causes. The enable/disable control's the
|
|
- * overall interrupt state. if the interrupt is disabled no causes will cause
|
|
- * an interrupt.
|
|
- *
|
|
- * Return: '0' on Success; Error code otherwise.
|
|
- */
|
|
-int dprc_set_irq_enable(struct fsl_mc_io *mc_io,
|
|
- u32 cmd_flags,
|
|
- u16 token,
|
|
- u8 irq_index,
|
|
- u8 en)
|
|
-{
|
|
- struct mc_command cmd = { 0 };
|
|
- struct dprc_cmd_set_irq_enable *cmd_params;
|
|
-
|
|
- /* prepare command */
|
|
- cmd.header = mc_encode_cmd_header(DPRC_CMDID_SET_IRQ_ENABLE,
|
|
- cmd_flags, token);
|
|
- cmd_params = (struct dprc_cmd_set_irq_enable *)cmd.params;
|
|
- cmd_params->enable = en & DPRC_ENABLE;
|
|
- cmd_params->irq_index = irq_index;
|
|
-
|
|
- /* send command to mc*/
|
|
- return mc_send_command(mc_io, &cmd);
|
|
-}
|
|
-
|
|
-/**
|
|
- * dprc_get_irq_mask() - Get interrupt mask.
|
|
- * @mc_io: Pointer to MC portal's I/O object
|
|
- * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
|
|
- * @token: Token of DPRC object
|
|
- * @irq_index: The interrupt index to configure
|
|
- * @mask: Returned event mask to trigger interrupt
|
|
- *
|
|
- * Every interrupt can have up to 32 causes and the interrupt model supports
|
|
- * masking/unmasking each cause independently
|
|
- *
|
|
- * Return: '0' on Success; Error code otherwise.
|
|
- */
|
|
-int dprc_get_irq_mask(struct fsl_mc_io *mc_io,
|
|
- u32 cmd_flags,
|
|
- u16 token,
|
|
- u8 irq_index,
|
|
- u32 *mask)
|
|
-{
|
|
- struct mc_command cmd = { 0 };
|
|
- struct dprc_cmd_get_irq_mask *cmd_params;
|
|
- struct dprc_rsp_get_irq_mask *rsp_params;
|
|
- int err;
|
|
-
|
|
- /* prepare command */
|
|
- cmd.header = mc_encode_cmd_header(DPRC_CMDID_GET_IRQ_MASK,
|
|
- cmd_flags, token);
|
|
- cmd_params = (struct dprc_cmd_get_irq_mask *)cmd.params;
|
|
- cmd_params->irq_index = irq_index;
|
|
-
|
|
- /* send command to mc*/
|
|
- err = mc_send_command(mc_io, &cmd);
|
|
- if (err)
|
|
- return err;
|
|
-
|
|
- /* retrieve response parameters */
|
|
- rsp_params = (struct dprc_rsp_get_irq_mask *)cmd.params;
|
|
- *mask = le32_to_cpu(rsp_params->mask);
|
|
-
|
|
- return 0;
|
|
-}
|
|
-
|
|
-/**
|
|
- * dprc_set_irq_mask() - Set interrupt mask.
|
|
- * @mc_io: Pointer to MC portal's I/O object
|
|
- * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
|
|
- * @token: Token of DPRC object
|
|
- * @irq_index: The interrupt index to configure
|
|
- * @mask: event mask to trigger interrupt;
|
|
- * each bit:
|
|
- * 0 = ignore event
|
|
- * 1 = consider event for asserting irq
|
|
- *
|
|
- * Every interrupt can have up to 32 causes and the interrupt model supports
|
|
- * masking/unmasking each cause independently
|
|
- *
|
|
- * Return: '0' on Success; Error code otherwise.
|
|
- */
|
|
-int dprc_set_irq_mask(struct fsl_mc_io *mc_io,
|
|
- u32 cmd_flags,
|
|
- u16 token,
|
|
- u8 irq_index,
|
|
- u32 mask)
|
|
-{
|
|
- struct mc_command cmd = { 0 };
|
|
- struct dprc_cmd_set_irq_mask *cmd_params;
|
|
-
|
|
- /* prepare command */
|
|
- cmd.header = mc_encode_cmd_header(DPRC_CMDID_SET_IRQ_MASK,
|
|
- cmd_flags, token);
|
|
- cmd_params = (struct dprc_cmd_set_irq_mask *)cmd.params;
|
|
- cmd_params->mask = cpu_to_le32(mask);
|
|
- cmd_params->irq_index = irq_index;
|
|
-
|
|
- /* send command to mc*/
|
|
- return mc_send_command(mc_io, &cmd);
|
|
-}
|
|
-
|
|
-/**
|
|
- * dprc_get_irq_status() - Get the current status of any pending interrupts.
|
|
- * @mc_io: Pointer to MC portal's I/O object
|
|
- * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
|
|
- * @token: Token of DPRC object
|
|
- * @irq_index: The interrupt index to configure
|
|
- * @status: Returned interrupts status - one bit per cause:
|
|
- * 0 = no interrupt pending
|
|
- * 1 = interrupt pending
|
|
- *
|
|
- * Return: '0' on Success; Error code otherwise.
|
|
- */
|
|
-int dprc_get_irq_status(struct fsl_mc_io *mc_io,
|
|
- u32 cmd_flags,
|
|
- u16 token,
|
|
- u8 irq_index,
|
|
- u32 *status)
|
|
-{
|
|
- struct mc_command cmd = { 0 };
|
|
- struct dprc_cmd_get_irq_status *cmd_params;
|
|
- struct dprc_rsp_get_irq_status *rsp_params;
|
|
- int err;
|
|
-
|
|
- /* prepare command */
|
|
- cmd.header = mc_encode_cmd_header(DPRC_CMDID_GET_IRQ_STATUS,
|
|
- cmd_flags, token);
|
|
- cmd_params = (struct dprc_cmd_get_irq_status *)cmd.params;
|
|
- cmd_params->status = cpu_to_le32(*status);
|
|
- cmd_params->irq_index = irq_index;
|
|
-
|
|
- /* send command to mc*/
|
|
- err = mc_send_command(mc_io, &cmd);
|
|
- if (err)
|
|
- return err;
|
|
-
|
|
- /* retrieve response parameters */
|
|
- rsp_params = (struct dprc_rsp_get_irq_status *)cmd.params;
|
|
- *status = le32_to_cpu(rsp_params->status);
|
|
-
|
|
- return 0;
|
|
-}
|
|
-
|
|
-/**
|
|
- * dprc_clear_irq_status() - Clear a pending interrupt's status
|
|
- * @mc_io: Pointer to MC portal's I/O object
|
|
- * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
|
|
- * @token: Token of DPRC object
|
|
- * @irq_index: The interrupt index to configure
|
|
- * @status: bits to clear (W1C) - one bit per cause:
|
|
- * 0 = don't change
|
|
- * 1 = clear status bit
|
|
- *
|
|
- * Return: '0' on Success; Error code otherwise.
|
|
- */
|
|
-int dprc_clear_irq_status(struct fsl_mc_io *mc_io,
|
|
- u32 cmd_flags,
|
|
- u16 token,
|
|
- u8 irq_index,
|
|
- u32 status)
|
|
-{
|
|
- struct mc_command cmd = { 0 };
|
|
- struct dprc_cmd_clear_irq_status *cmd_params;
|
|
-
|
|
- /* prepare command */
|
|
- cmd.header = mc_encode_cmd_header(DPRC_CMDID_CLEAR_IRQ_STATUS,
|
|
- cmd_flags, token);
|
|
- cmd_params = (struct dprc_cmd_clear_irq_status *)cmd.params;
|
|
- cmd_params->status = cpu_to_le32(status);
|
|
- cmd_params->irq_index = irq_index;
|
|
-
|
|
- /* send command to mc*/
|
|
- return mc_send_command(mc_io, &cmd);
|
|
-}
|
|
-
|
|
-/**
|
|
- * dprc_get_attributes() - Obtains container attributes
|
|
- * @mc_io: Pointer to MC portal's I/O object
|
|
- * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
|
|
- * @token: Token of DPRC object
|
|
- * @attributes Returned container attributes
|
|
- *
|
|
- * Return: '0' on Success; Error code otherwise.
|
|
- */
|
|
-int dprc_get_attributes(struct fsl_mc_io *mc_io,
|
|
- u32 cmd_flags,
|
|
- u16 token,
|
|
- struct dprc_attributes *attr)
|
|
-{
|
|
- struct mc_command cmd = { 0 };
|
|
- struct dprc_rsp_get_attributes *rsp_params;
|
|
- int err;
|
|
-
|
|
- /* prepare command */
|
|
- cmd.header = mc_encode_cmd_header(DPRC_CMDID_GET_ATTR,
|
|
- cmd_flags,
|
|
- token);
|
|
-
|
|
- /* send command to mc*/
|
|
- err = mc_send_command(mc_io, &cmd);
|
|
- if (err)
|
|
- return err;
|
|
-
|
|
- /* retrieve response parameters */
|
|
- rsp_params = (struct dprc_rsp_get_attributes *)cmd.params;
|
|
- attr->container_id = le32_to_cpu(rsp_params->container_id);
|
|
- attr->icid = le16_to_cpu(rsp_params->icid);
|
|
- attr->options = le32_to_cpu(rsp_params->options);
|
|
- attr->portal_id = le32_to_cpu(rsp_params->portal_id);
|
|
-
|
|
- return 0;
|
|
-}
|
|
-
|
|
-/**
|
|
- * dprc_get_obj_count() - Obtains the number of objects in the DPRC
|
|
- * @mc_io: Pointer to MC portal's I/O object
|
|
- * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
|
|
- * @token: Token of DPRC object
|
|
- * @obj_count: Number of objects assigned to the DPRC
|
|
- *
|
|
- * Return: '0' on Success; Error code otherwise.
|
|
- */
|
|
-int dprc_get_obj_count(struct fsl_mc_io *mc_io,
|
|
- u32 cmd_flags,
|
|
- u16 token,
|
|
- int *obj_count)
|
|
-{
|
|
- struct mc_command cmd = { 0 };
|
|
- struct dprc_rsp_get_obj_count *rsp_params;
|
|
- int err;
|
|
-
|
|
- /* prepare command */
|
|
- cmd.header = mc_encode_cmd_header(DPRC_CMDID_GET_OBJ_COUNT,
|
|
- cmd_flags, token);
|
|
-
|
|
- /* send command to mc*/
|
|
- err = mc_send_command(mc_io, &cmd);
|
|
- if (err)
|
|
- return err;
|
|
-
|
|
- /* retrieve response parameters */
|
|
- rsp_params = (struct dprc_rsp_get_obj_count *)cmd.params;
|
|
- *obj_count = le32_to_cpu(rsp_params->obj_count);
|
|
-
|
|
- return 0;
|
|
-}
|
|
-EXPORT_SYMBOL(dprc_get_obj_count);
|
|
-
|
|
-/**
|
|
- * dprc_get_obj() - Get general information on an object
|
|
- * @mc_io: Pointer to MC portal's I/O object
|
|
- * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
|
|
- * @token: Token of DPRC object
|
|
- * @obj_index: Index of the object to be queried (< obj_count)
|
|
- * @obj_desc: Returns the requested object descriptor
|
|
- *
|
|
- * The object descriptors are retrieved one by one by incrementing
|
|
- * obj_index up to (not including) the value of obj_count returned
|
|
- * from dprc_get_obj_count(). dprc_get_obj_count() must
|
|
- * be called prior to dprc_get_obj().
|
|
- *
|
|
- * Return: '0' on Success; Error code otherwise.
|
|
- */
|
|
-int dprc_get_obj(struct fsl_mc_io *mc_io,
|
|
- u32 cmd_flags,
|
|
- u16 token,
|
|
- int obj_index,
|
|
- struct fsl_mc_obj_desc *obj_desc)
|
|
-{
|
|
- struct mc_command cmd = { 0 };
|
|
- struct dprc_cmd_get_obj *cmd_params;
|
|
- struct dprc_rsp_get_obj *rsp_params;
|
|
- int err;
|
|
-
|
|
- /* prepare command */
|
|
- cmd.header = mc_encode_cmd_header(DPRC_CMDID_GET_OBJ,
|
|
- cmd_flags,
|
|
- token);
|
|
- cmd_params = (struct dprc_cmd_get_obj *)cmd.params;
|
|
- cmd_params->obj_index = cpu_to_le32(obj_index);
|
|
-
|
|
- /* send command to mc*/
|
|
- err = mc_send_command(mc_io, &cmd);
|
|
- if (err)
|
|
- return err;
|
|
-
|
|
- /* retrieve response parameters */
|
|
- rsp_params = (struct dprc_rsp_get_obj *)cmd.params;
|
|
- obj_desc->id = le32_to_cpu(rsp_params->id);
|
|
- obj_desc->vendor = le16_to_cpu(rsp_params->vendor);
|
|
- obj_desc->irq_count = rsp_params->irq_count;
|
|
- obj_desc->region_count = rsp_params->region_count;
|
|
- obj_desc->state = le32_to_cpu(rsp_params->state);
|
|
- obj_desc->ver_major = le16_to_cpu(rsp_params->version_major);
|
|
- obj_desc->ver_minor = le16_to_cpu(rsp_params->version_minor);
|
|
- obj_desc->flags = le16_to_cpu(rsp_params->flags);
|
|
- strncpy(obj_desc->type, rsp_params->type, 16);
|
|
- obj_desc->type[15] = '\0';
|
|
- strncpy(obj_desc->label, rsp_params->label, 16);
|
|
- obj_desc->label[15] = '\0';
|
|
- return 0;
|
|
-}
|
|
-EXPORT_SYMBOL(dprc_get_obj);
|
|
-
|
|
-/**
|
|
- * dprc_set_obj_irq() - Set IRQ information for object to trigger an interrupt.
|
|
- * @mc_io: Pointer to MC portal's I/O object
|
|
- * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
|
|
- * @token: Token of DPRC object
|
|
- * @obj_type: Type of the object to set its IRQ
|
|
- * @obj_id: ID of the object to set its IRQ
|
|
- * @irq_index: The interrupt index to configure
|
|
- * @irq_cfg: IRQ configuration
|
|
- *
|
|
- * Return: '0' on Success; Error code otherwise.
|
|
- */
|
|
-int dprc_set_obj_irq(struct fsl_mc_io *mc_io,
|
|
- u32 cmd_flags,
|
|
- u16 token,
|
|
- char *obj_type,
|
|
- int obj_id,
|
|
- u8 irq_index,
|
|
- struct dprc_irq_cfg *irq_cfg)
|
|
-{
|
|
- struct mc_command cmd = { 0 };
|
|
- struct dprc_cmd_set_obj_irq *cmd_params;
|
|
-
|
|
- /* prepare command */
|
|
- cmd.header = mc_encode_cmd_header(DPRC_CMDID_SET_OBJ_IRQ,
|
|
- cmd_flags,
|
|
- token);
|
|
- cmd_params = (struct dprc_cmd_set_obj_irq *)cmd.params;
|
|
- cmd_params->irq_val = cpu_to_le32(irq_cfg->val);
|
|
- cmd_params->irq_index = irq_index;
|
|
- cmd_params->irq_addr = cpu_to_le64(irq_cfg->paddr);
|
|
- cmd_params->irq_num = cpu_to_le32(irq_cfg->irq_num);
|
|
- cmd_params->obj_id = cpu_to_le32(obj_id);
|
|
- strncpy(cmd_params->obj_type, obj_type, 16);
|
|
- cmd_params->obj_type[15] = '\0';
|
|
-
|
|
- /* send command to mc*/
|
|
- return mc_send_command(mc_io, &cmd);
|
|
-}
|
|
-EXPORT_SYMBOL(dprc_set_obj_irq);
|
|
-
|
|
-/**
|
|
- * dprc_get_obj_irq() - Get IRQ information from object.
|
|
- * @mc_io: Pointer to MC portal's I/O object
|
|
- * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
|
|
- * @token: Token of DPRC object
|
|
- * @obj_type: Type od the object to get its IRQ
|
|
- * @obj_id: ID of the object to get its IRQ
|
|
- * @irq_index: The interrupt index to configure
|
|
- * @type: Interrupt type: 0 represents message interrupt
|
|
- * type (both irq_addr and irq_val are valid)
|
|
- * @irq_cfg: The returned IRQ attributes
|
|
- *
|
|
- * Return: '0' on Success; Error code otherwise.
|
|
- */
|
|
-int dprc_get_obj_irq(struct fsl_mc_io *mc_io,
|
|
- u32 cmd_flags,
|
|
- u16 token,
|
|
- char *obj_type,
|
|
- int obj_id,
|
|
- u8 irq_index,
|
|
- int *type,
|
|
- struct dprc_irq_cfg *irq_cfg)
|
|
-{
|
|
- struct mc_command cmd = { 0 };
|
|
- struct dprc_cmd_get_obj_irq *cmd_params;
|
|
- struct dprc_rsp_get_obj_irq *rsp_params;
|
|
- int err;
|
|
-
|
|
- /* prepare command */
|
|
- cmd.header = mc_encode_cmd_header(DPRC_CMDID_GET_OBJ_IRQ,
|
|
- cmd_flags,
|
|
- token);
|
|
- cmd_params = (struct dprc_cmd_get_obj_irq *)cmd.params;
|
|
- cmd_params->obj_id = cpu_to_le32(obj_id);
|
|
- cmd_params->irq_index = irq_index;
|
|
- strncpy(cmd_params->obj_type, obj_type, 16);
|
|
- cmd_params->obj_type[15] = '\0';
|
|
-
|
|
- /* send command to mc*/
|
|
- err = mc_send_command(mc_io, &cmd);
|
|
- if (err)
|
|
- return err;
|
|
-
|
|
- /* retrieve response parameters */
|
|
- rsp_params = (struct dprc_rsp_get_obj_irq *)cmd.params;
|
|
- irq_cfg->val = le32_to_cpu(rsp_params->irq_val);
|
|
- irq_cfg->paddr = le64_to_cpu(rsp_params->irq_addr);
|
|
- irq_cfg->irq_num = le32_to_cpu(rsp_params->irq_num);
|
|
- *type = le32_to_cpu(rsp_params->type);
|
|
-
|
|
- return 0;
|
|
-}
|
|
-EXPORT_SYMBOL(dprc_get_obj_irq);
|
|
-
|
|
-/**
|
|
- * dprc_get_res_count() - Obtains the number of free resources that are assigned
|
|
- * to this container, by pool type
|
|
- * @mc_io: Pointer to MC portal's I/O object
|
|
- * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
|
|
- * @token: Token of DPRC object
|
|
- * @type: pool type
|
|
- * @res_count: Returned number of free resources of the given
|
|
- * resource type that are assigned to this DPRC
|
|
- *
|
|
- * Return: '0' on Success; Error code otherwise.
|
|
- */
|
|
-int dprc_get_res_count(struct fsl_mc_io *mc_io,
|
|
- u32 cmd_flags,
|
|
- u16 token,
|
|
- char *type,
|
|
- int *res_count)
|
|
-{
|
|
- struct mc_command cmd = { 0 };
|
|
- struct dprc_cmd_get_res_count *cmd_params;
|
|
- struct dprc_rsp_get_res_count *rsp_params;
|
|
- int err;
|
|
-
|
|
- /* prepare command */
|
|
- cmd.header = mc_encode_cmd_header(DPRC_CMDID_GET_RES_COUNT,
|
|
- cmd_flags, token);
|
|
- cmd_params = (struct dprc_cmd_get_res_count *)cmd.params;
|
|
- strncpy(cmd_params->type, type, 16);
|
|
- cmd_params->type[15] = '\0';
|
|
-
|
|
- /* send command to mc*/
|
|
- err = mc_send_command(mc_io, &cmd);
|
|
- if (err)
|
|
- return err;
|
|
-
|
|
- /* retrieve response parameters */
|
|
- rsp_params = (struct dprc_rsp_get_res_count *)cmd.params;
|
|
- *res_count = le32_to_cpu(rsp_params->res_count);
|
|
-
|
|
- return 0;
|
|
-}
|
|
-EXPORT_SYMBOL(dprc_get_res_count);
|
|
-
|
|
-/**
|
|
- * dprc_get_obj_region() - Get region information for a specified object.
|
|
- * @mc_io: Pointer to MC portal's I/O object
|
|
- * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
|
|
- * @token: Token of DPRC object
|
|
- * @obj_type; Object type as returned in dprc_get_obj()
|
|
- * @obj_id: Unique object instance as returned in dprc_get_obj()
|
|
- * @region_index: The specific region to query
|
|
- * @region_desc: Returns the requested region descriptor
|
|
- *
|
|
- * Return: '0' on Success; Error code otherwise.
|
|
- */
|
|
-int dprc_get_obj_region(struct fsl_mc_io *mc_io,
|
|
- u32 cmd_flags,
|
|
- u16 token,
|
|
- char *obj_type,
|
|
- int obj_id,
|
|
- u8 region_index,
|
|
- struct dprc_region_desc *region_desc)
|
|
-{
|
|
- struct mc_command cmd = { 0 };
|
|
- struct dprc_cmd_get_obj_region *cmd_params;
|
|
- struct dprc_rsp_get_obj_region *rsp_params;
|
|
- int err;
|
|
-
|
|
- /* prepare command */
|
|
- cmd.header = mc_encode_cmd_header(DPRC_CMDID_GET_OBJ_REG,
|
|
- cmd_flags, token);
|
|
- cmd_params = (struct dprc_cmd_get_obj_region *)cmd.params;
|
|
- cmd_params->obj_id = cpu_to_le32(obj_id);
|
|
- cmd_params->region_index = region_index;
|
|
- strncpy(cmd_params->obj_type, obj_type, 16);
|
|
- cmd_params->obj_type[15] = '\0';
|
|
-
|
|
- /* send command to mc*/
|
|
- err = mc_send_command(mc_io, &cmd);
|
|
- if (err)
|
|
- return err;
|
|
-
|
|
- /* retrieve response parameters */
|
|
- rsp_params = (struct dprc_rsp_get_obj_region *)cmd.params;
|
|
- region_desc->base_offset = le64_to_cpu(rsp_params->base_addr);
|
|
- region_desc->size = le32_to_cpu(rsp_params->size);
|
|
-
|
|
- return 0;
|
|
-}
|
|
-EXPORT_SYMBOL(dprc_get_obj_region);
|
|
-
|
|
-/**
|
|
- * dprc_get_api_version - Get Data Path Resource Container API version
|
|
- * @mc_io: Pointer to Mc portal's I/O object
|
|
- * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
|
|
- * @major_ver: Major version of Data Path Resource Container API
|
|
- * @minor_ver: Minor version of Data Path Resource Container API
|
|
- *
|
|
- * Return: '0' on Success; Error code otherwise.
|
|
- */
|
|
-int dprc_get_api_version(struct fsl_mc_io *mc_io,
|
|
- u32 cmd_flags,
|
|
- u16 *major_ver,
|
|
- u16 *minor_ver)
|
|
-{
|
|
- struct mc_command cmd = { 0 };
|
|
- int err;
|
|
-
|
|
- /* prepare command */
|
|
- cmd.header = mc_encode_cmd_header(DPRC_CMDID_GET_API_VERSION,
|
|
- cmd_flags, 0);
|
|
-
|
|
- /* send command to mc */
|
|
- err = mc_send_command(mc_io, &cmd);
|
|
- if (err)
|
|
- return err;
|
|
-
|
|
- /* retrieve response parameters */
|
|
- mc_cmd_read_api_version(&cmd, major_ver, minor_ver);
|
|
-
|
|
- return 0;
|
|
-}
|
|
-
|
|
-/**
|
|
- * dprc_get_container_id - Get container ID associated with a given portal.
|
|
- * @mc_io: Pointer to Mc portal's I/O object
|
|
- * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
|
|
- * @container_id: Requested container id
|
|
- *
|
|
- * Return: '0' on Success; Error code otherwise.
|
|
- */
|
|
-int dprc_get_container_id(struct fsl_mc_io *mc_io,
|
|
- u32 cmd_flags,
|
|
- int *container_id)
|
|
-{
|
|
- struct mc_command cmd = { 0 };
|
|
- int err;
|
|
-
|
|
- /* prepare command */
|
|
- cmd.header = mc_encode_cmd_header(DPRC_CMDID_GET_CONT_ID,
|
|
- cmd_flags,
|
|
- 0);
|
|
-
|
|
- /* send command to mc*/
|
|
- err = mc_send_command(mc_io, &cmd);
|
|
- if (err)
|
|
- return err;
|
|
-
|
|
- /* retrieve response parameters */
|
|
- *container_id = (int)mc_cmd_read_object_id(&cmd);
|
|
-
|
|
- return 0;
|
|
-}
|
|
--- /dev/null
|
|
+++ b/drivers/bus/fsl-mc/dprc.c
|
|
@@ -0,0 +1,575 @@
|
|
+// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
|
|
+/*
|
|
+ * Copyright 2013-2016 Freescale Semiconductor Inc.
|
|
+ *
|
|
+ */
|
|
+#include <linux/kernel.h>
|
|
+#include <linux/fsl/mc.h>
|
|
+
|
|
+#include "fsl-mc-private.h"
|
|
+
|
|
+/**
|
|
+ * dprc_open() - Open DPRC object for use
|
|
+ * @mc_io: Pointer to MC portal's I/O object
|
|
+ * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
|
|
+ * @container_id: Container ID to open
|
|
+ * @token: Returned token of DPRC object
|
|
+ *
|
|
+ * Return: '0' on Success; Error code otherwise.
|
|
+ *
|
|
+ * @warning Required before any operation on the object.
|
|
+ */
|
|
+int dprc_open(struct fsl_mc_io *mc_io,
|
|
+ u32 cmd_flags,
|
|
+ int container_id,
|
|
+ u16 *token)
|
|
+{
|
|
+ struct fsl_mc_command cmd = { 0 };
|
|
+ struct dprc_cmd_open *cmd_params;
|
|
+ int err;
|
|
+
|
|
+ /* prepare command */
|
|
+ cmd.header = mc_encode_cmd_header(DPRC_CMDID_OPEN, cmd_flags,
|
|
+ 0);
|
|
+ cmd_params = (struct dprc_cmd_open *)cmd.params;
|
|
+ cmd_params->container_id = cpu_to_le32(container_id);
|
|
+
|
|
+ /* send command to mc*/
|
|
+ err = mc_send_command(mc_io, &cmd);
|
|
+ if (err)
|
|
+ return err;
|
|
+
|
|
+ /* retrieve response parameters */
|
|
+ *token = mc_cmd_hdr_read_token(&cmd);
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+EXPORT_SYMBOL_GPL(dprc_open);
|
|
+
|
|
+/**
|
|
+ * dprc_close() - Close the control session of the object
|
|
+ * @mc_io: Pointer to MC portal's I/O object
|
|
+ * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
|
|
+ * @token: Token of DPRC object
|
|
+ *
|
|
+ * After this function is called, no further operations are
|
|
+ * allowed on the object without opening a new control session.
|
|
+ *
|
|
+ * Return: '0' on Success; Error code otherwise.
|
|
+ */
|
|
+int dprc_close(struct fsl_mc_io *mc_io,
|
|
+ u32 cmd_flags,
|
|
+ u16 token)
|
|
+{
|
|
+ struct fsl_mc_command cmd = { 0 };
|
|
+
|
|
+ /* prepare command */
|
|
+ cmd.header = mc_encode_cmd_header(DPRC_CMDID_CLOSE, cmd_flags,
|
|
+ token);
|
|
+
|
|
+ /* send command to mc*/
|
|
+ return mc_send_command(mc_io, &cmd);
|
|
+}
|
|
+EXPORT_SYMBOL_GPL(dprc_close);
|
|
+
|
|
+/**
|
|
+ * dprc_reset_container - Reset child container.
|
|
+ * @mc_io: Pointer to MC portal's I/O object
|
|
+ * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
|
|
+ * @token: Token of DPRC object
|
|
+ * @child_container_id: ID of the container to reset
|
|
+ *
|
|
+ * In case a software context crashes or becomes non-responsive, the parent
|
|
+ * may wish to reset its resources container before the software context is
|
|
+ * restarted.
|
|
+ *
|
|
+ * This routine informs all objects assigned to the child container that the
|
|
+ * container is being reset, so they may perform any cleanup operations that are
|
|
+ * needed. All objects handles that were owned by the child container shall be
|
|
+ * closed.
|
|
+ *
|
|
+ * Note that such request may be submitted even if the child software context
|
|
+ * has not crashed, but the resulting object cleanup operations will not be
|
|
+ * aware of that.
|
|
+ *
|
|
+ * Return: '0' on Success; Error code otherwise.
|
|
+ */
|
|
+int dprc_reset_container(struct fsl_mc_io *mc_io,
|
|
+ u32 cmd_flags,
|
|
+ u16 token,
|
|
+ int child_container_id)
|
|
+{
|
|
+ struct fsl_mc_command cmd = { 0 };
|
|
+ struct dprc_cmd_reset_container *cmd_params;
|
|
+
|
|
+ /* prepare command */
|
|
+ cmd.header = mc_encode_cmd_header(DPRC_CMDID_RESET_CONT,
|
|
+ cmd_flags, token);
|
|
+ cmd_params = (struct dprc_cmd_reset_container *)cmd.params;
|
|
+ cmd_params->child_container_id = cpu_to_le32(child_container_id);
|
|
+
|
|
+ /* send command to mc*/
|
|
+ return mc_send_command(mc_io, &cmd);
|
|
+}
|
|
+EXPORT_SYMBOL_GPL(dprc_reset_container);
|
|
+
|
|
+/**
|
|
+ * dprc_set_irq() - Set IRQ information for the DPRC to trigger an interrupt.
|
|
+ * @mc_io: Pointer to MC portal's I/O object
|
|
+ * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
|
|
+ * @token: Token of DPRC object
|
|
+ * @irq_index: Identifies the interrupt index to configure
|
|
+ * @irq_cfg: IRQ configuration
|
|
+ *
|
|
+ * Return: '0' on Success; Error code otherwise.
|
|
+ */
|
|
+int dprc_set_irq(struct fsl_mc_io *mc_io,
|
|
+ u32 cmd_flags,
|
|
+ u16 token,
|
|
+ u8 irq_index,
|
|
+ struct dprc_irq_cfg *irq_cfg)
|
|
+{
|
|
+ struct fsl_mc_command cmd = { 0 };
|
|
+ struct dprc_cmd_set_irq *cmd_params;
|
|
+
|
|
+ /* prepare command */
|
|
+ cmd.header = mc_encode_cmd_header(DPRC_CMDID_SET_IRQ,
|
|
+ cmd_flags,
|
|
+ token);
|
|
+ cmd_params = (struct dprc_cmd_set_irq *)cmd.params;
|
|
+ cmd_params->irq_val = cpu_to_le32(irq_cfg->val);
|
|
+ cmd_params->irq_index = irq_index;
|
|
+ cmd_params->irq_addr = cpu_to_le64(irq_cfg->paddr);
|
|
+ cmd_params->irq_num = cpu_to_le32(irq_cfg->irq_num);
|
|
+
|
|
+ /* send command to mc*/
|
|
+ return mc_send_command(mc_io, &cmd);
|
|
+}
|
|
+
|
|
+/**
|
|
+ * dprc_set_irq_enable() - Set overall interrupt state.
|
|
+ * @mc_io: Pointer to MC portal's I/O object
|
|
+ * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
|
|
+ * @token: Token of DPRC object
|
|
+ * @irq_index: The interrupt index to configure
|
|
+ * @en: Interrupt state - enable = 1, disable = 0
|
|
+ *
|
|
+ * Allows GPP software to control when interrupts are generated.
|
|
+ * Each interrupt can have up to 32 causes. The enable/disable control's the
|
|
+ * overall interrupt state. if the interrupt is disabled no causes will cause
|
|
+ * an interrupt.
|
|
+ *
|
|
+ * Return: '0' on Success; Error code otherwise.
|
|
+ */
|
|
+int dprc_set_irq_enable(struct fsl_mc_io *mc_io,
|
|
+ u32 cmd_flags,
|
|
+ u16 token,
|
|
+ u8 irq_index,
|
|
+ u8 en)
|
|
+{
|
|
+ struct fsl_mc_command cmd = { 0 };
|
|
+ struct dprc_cmd_set_irq_enable *cmd_params;
|
|
+
|
|
+ /* prepare command */
|
|
+ cmd.header = mc_encode_cmd_header(DPRC_CMDID_SET_IRQ_ENABLE,
|
|
+ cmd_flags, token);
|
|
+ cmd_params = (struct dprc_cmd_set_irq_enable *)cmd.params;
|
|
+ cmd_params->enable = en & DPRC_ENABLE;
|
|
+ cmd_params->irq_index = irq_index;
|
|
+
|
|
+ /* send command to mc*/
|
|
+ return mc_send_command(mc_io, &cmd);
|
|
+}
|
|
+
|
|
+/**
|
|
+ * dprc_set_irq_mask() - Set interrupt mask.
|
|
+ * @mc_io: Pointer to MC portal's I/O object
|
|
+ * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
|
|
+ * @token: Token of DPRC object
|
|
+ * @irq_index: The interrupt index to configure
|
|
+ * @mask: event mask to trigger interrupt;
|
|
+ * each bit:
|
|
+ * 0 = ignore event
|
|
+ * 1 = consider event for asserting irq
|
|
+ *
|
|
+ * Every interrupt can have up to 32 causes and the interrupt model supports
|
|
+ * masking/unmasking each cause independently
|
|
+ *
|
|
+ * Return: '0' on Success; Error code otherwise.
|
|
+ */
|
|
+int dprc_set_irq_mask(struct fsl_mc_io *mc_io,
|
|
+ u32 cmd_flags,
|
|
+ u16 token,
|
|
+ u8 irq_index,
|
|
+ u32 mask)
|
|
+{
|
|
+ struct fsl_mc_command cmd = { 0 };
|
|
+ struct dprc_cmd_set_irq_mask *cmd_params;
|
|
+
|
|
+ /* prepare command */
|
|
+ cmd.header = mc_encode_cmd_header(DPRC_CMDID_SET_IRQ_MASK,
|
|
+ cmd_flags, token);
|
|
+ cmd_params = (struct dprc_cmd_set_irq_mask *)cmd.params;
|
|
+ cmd_params->mask = cpu_to_le32(mask);
|
|
+ cmd_params->irq_index = irq_index;
|
|
+
|
|
+ /* send command to mc*/
|
|
+ return mc_send_command(mc_io, &cmd);
|
|
+}
|
|
+
|
|
+/**
|
|
+ * dprc_get_irq_status() - Get the current status of any pending interrupts.
|
|
+ * @mc_io: Pointer to MC portal's I/O object
|
|
+ * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
|
|
+ * @token: Token of DPRC object
|
|
+ * @irq_index: The interrupt index to configure
|
|
+ * @status: Returned interrupts status - one bit per cause:
|
|
+ * 0 = no interrupt pending
|
|
+ * 1 = interrupt pending
|
|
+ *
|
|
+ * Return: '0' on Success; Error code otherwise.
|
|
+ */
|
|
+int dprc_get_irq_status(struct fsl_mc_io *mc_io,
|
|
+ u32 cmd_flags,
|
|
+ u16 token,
|
|
+ u8 irq_index,
|
|
+ u32 *status)
|
|
+{
|
|
+ struct fsl_mc_command cmd = { 0 };
|
|
+ struct dprc_cmd_get_irq_status *cmd_params;
|
|
+ struct dprc_rsp_get_irq_status *rsp_params;
|
|
+ int err;
|
|
+
|
|
+ /* prepare command */
|
|
+ cmd.header = mc_encode_cmd_header(DPRC_CMDID_GET_IRQ_STATUS,
|
|
+ cmd_flags, token);
|
|
+ cmd_params = (struct dprc_cmd_get_irq_status *)cmd.params;
|
|
+ cmd_params->status = cpu_to_le32(*status);
|
|
+ cmd_params->irq_index = irq_index;
|
|
+
|
|
+ /* send command to mc*/
|
|
+ err = mc_send_command(mc_io, &cmd);
|
|
+ if (err)
|
|
+ return err;
|
|
+
|
|
+ /* retrieve response parameters */
|
|
+ rsp_params = (struct dprc_rsp_get_irq_status *)cmd.params;
|
|
+ *status = le32_to_cpu(rsp_params->status);
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+/**
|
|
+ * dprc_clear_irq_status() - Clear a pending interrupt's status
|
|
+ * @mc_io: Pointer to MC portal's I/O object
|
|
+ * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
|
|
+ * @token: Token of DPRC object
|
|
+ * @irq_index: The interrupt index to configure
|
|
+ * @status: bits to clear (W1C) - one bit per cause:
|
|
+ * 0 = don't change
|
|
+ * 1 = clear status bit
|
|
+ *
|
|
+ * Return: '0' on Success; Error code otherwise.
|
|
+ */
|
|
+int dprc_clear_irq_status(struct fsl_mc_io *mc_io,
|
|
+ u32 cmd_flags,
|
|
+ u16 token,
|
|
+ u8 irq_index,
|
|
+ u32 status)
|
|
+{
|
|
+ struct fsl_mc_command cmd = { 0 };
|
|
+ struct dprc_cmd_clear_irq_status *cmd_params;
|
|
+
|
|
+ /* prepare command */
|
|
+ cmd.header = mc_encode_cmd_header(DPRC_CMDID_CLEAR_IRQ_STATUS,
|
|
+ cmd_flags, token);
|
|
+ cmd_params = (struct dprc_cmd_clear_irq_status *)cmd.params;
|
|
+ cmd_params->status = cpu_to_le32(status);
|
|
+ cmd_params->irq_index = irq_index;
|
|
+
|
|
+ /* send command to mc*/
|
|
+ return mc_send_command(mc_io, &cmd);
|
|
+}
|
|
+
|
|
+/**
|
|
+ * dprc_get_attributes() - Obtains container attributes
|
|
+ * @mc_io: Pointer to MC portal's I/O object
|
|
+ * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
|
|
+ * @token: Token of DPRC object
|
|
+ * @attributes Returned container attributes
|
|
+ *
|
|
+ * Return: '0' on Success; Error code otherwise.
|
|
+ */
|
|
+int dprc_get_attributes(struct fsl_mc_io *mc_io,
|
|
+ u32 cmd_flags,
|
|
+ u16 token,
|
|
+ struct dprc_attributes *attr)
|
|
+{
|
|
+ struct fsl_mc_command cmd = { 0 };
|
|
+ struct dprc_rsp_get_attributes *rsp_params;
|
|
+ int err;
|
|
+
|
|
+ /* prepare command */
|
|
+ cmd.header = mc_encode_cmd_header(DPRC_CMDID_GET_ATTR,
|
|
+ cmd_flags,
|
|
+ token);
|
|
+
|
|
+ /* send command to mc*/
|
|
+ err = mc_send_command(mc_io, &cmd);
|
|
+ if (err)
|
|
+ return err;
|
|
+
|
|
+ /* retrieve response parameters */
|
|
+ rsp_params = (struct dprc_rsp_get_attributes *)cmd.params;
|
|
+ attr->container_id = le32_to_cpu(rsp_params->container_id);
|
|
+ attr->icid = le32_to_cpu(rsp_params->icid);
|
|
+ attr->options = le32_to_cpu(rsp_params->options);
|
|
+ attr->portal_id = le32_to_cpu(rsp_params->portal_id);
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+/**
|
|
+ * dprc_get_obj_count() - Obtains the number of objects in the DPRC
|
|
+ * @mc_io: Pointer to MC portal's I/O object
|
|
+ * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
|
|
+ * @token: Token of DPRC object
|
|
+ * @obj_count: Number of objects assigned to the DPRC
|
|
+ *
|
|
+ * Return: '0' on Success; Error code otherwise.
|
|
+ */
|
|
+int dprc_get_obj_count(struct fsl_mc_io *mc_io,
|
|
+ u32 cmd_flags,
|
|
+ u16 token,
|
|
+ int *obj_count)
|
|
+{
|
|
+ struct fsl_mc_command cmd = { 0 };
|
|
+ struct dprc_rsp_get_obj_count *rsp_params;
|
|
+ int err;
|
|
+
|
|
+ /* prepare command */
|
|
+ cmd.header = mc_encode_cmd_header(DPRC_CMDID_GET_OBJ_COUNT,
|
|
+ cmd_flags, token);
|
|
+
|
|
+ /* send command to mc*/
|
|
+ err = mc_send_command(mc_io, &cmd);
|
|
+ if (err)
|
|
+ return err;
|
|
+
|
|
+ /* retrieve response parameters */
|
|
+ rsp_params = (struct dprc_rsp_get_obj_count *)cmd.params;
|
|
+ *obj_count = le32_to_cpu(rsp_params->obj_count);
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+EXPORT_SYMBOL_GPL(dprc_get_obj_count);
|
|
+
|
|
+/**
|
|
+ * dprc_get_obj() - Get general information on an object
|
|
+ * @mc_io: Pointer to MC portal's I/O object
|
|
+ * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
|
|
+ * @token: Token of DPRC object
|
|
+ * @obj_index: Index of the object to be queried (< obj_count)
|
|
+ * @obj_desc: Returns the requested object descriptor
|
|
+ *
|
|
+ * The object descriptors are retrieved one by one by incrementing
|
|
+ * obj_index up to (not including) the value of obj_count returned
|
|
+ * from dprc_get_obj_count(). dprc_get_obj_count() must
|
|
+ * be called prior to dprc_get_obj().
|
|
+ *
|
|
+ * Return: '0' on Success; Error code otherwise.
|
|
+ */
|
|
+int dprc_get_obj(struct fsl_mc_io *mc_io,
|
|
+ u32 cmd_flags,
|
|
+ u16 token,
|
|
+ int obj_index,
|
|
+ struct fsl_mc_obj_desc *obj_desc)
|
|
+{
|
|
+ struct fsl_mc_command cmd = { 0 };
|
|
+ struct dprc_cmd_get_obj *cmd_params;
|
|
+ struct dprc_rsp_get_obj *rsp_params;
|
|
+ int err;
|
|
+
|
|
+ /* prepare command */
|
|
+ cmd.header = mc_encode_cmd_header(DPRC_CMDID_GET_OBJ,
|
|
+ cmd_flags,
|
|
+ token);
|
|
+ cmd_params = (struct dprc_cmd_get_obj *)cmd.params;
|
|
+ cmd_params->obj_index = cpu_to_le32(obj_index);
|
|
+
|
|
+ /* send command to mc*/
|
|
+ err = mc_send_command(mc_io, &cmd);
|
|
+ if (err)
|
|
+ return err;
|
|
+
|
|
+ /* retrieve response parameters */
|
|
+ rsp_params = (struct dprc_rsp_get_obj *)cmd.params;
|
|
+ obj_desc->id = le32_to_cpu(rsp_params->id);
|
|
+ obj_desc->vendor = le16_to_cpu(rsp_params->vendor);
|
|
+ obj_desc->irq_count = rsp_params->irq_count;
|
|
+ obj_desc->region_count = rsp_params->region_count;
|
|
+ obj_desc->state = le32_to_cpu(rsp_params->state);
|
|
+ obj_desc->ver_major = le16_to_cpu(rsp_params->version_major);
|
|
+ obj_desc->ver_minor = le16_to_cpu(rsp_params->version_minor);
|
|
+ obj_desc->flags = le16_to_cpu(rsp_params->flags);
|
|
+ strncpy(obj_desc->type, rsp_params->type, 16);
|
|
+ obj_desc->type[15] = '\0';
|
|
+ strncpy(obj_desc->label, rsp_params->label, 16);
|
|
+ obj_desc->label[15] = '\0';
|
|
+ return 0;
|
|
+}
|
|
+EXPORT_SYMBOL_GPL(dprc_get_obj);
|
|
+
|
|
+/**
|
|
+ * dprc_set_obj_irq() - Set IRQ information for object to trigger an interrupt.
|
|
+ * @mc_io: Pointer to MC portal's I/O object
|
|
+ * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
|
|
+ * @token: Token of DPRC object
|
|
+ * @obj_type: Type of the object to set its IRQ
|
|
+ * @obj_id: ID of the object to set its IRQ
|
|
+ * @irq_index: The interrupt index to configure
|
|
+ * @irq_cfg: IRQ configuration
|
|
+ *
|
|
+ * Return: '0' on Success; Error code otherwise.
|
|
+ */
|
|
+int dprc_set_obj_irq(struct fsl_mc_io *mc_io,
|
|
+ u32 cmd_flags,
|
|
+ u16 token,
|
|
+ char *obj_type,
|
|
+ int obj_id,
|
|
+ u8 irq_index,
|
|
+ struct dprc_irq_cfg *irq_cfg)
|
|
+{
|
|
+ struct fsl_mc_command cmd = { 0 };
|
|
+ struct dprc_cmd_set_obj_irq *cmd_params;
|
|
+
|
|
+ /* prepare command */
|
|
+ cmd.header = mc_encode_cmd_header(DPRC_CMDID_SET_OBJ_IRQ,
|
|
+ cmd_flags,
|
|
+ token);
|
|
+ cmd_params = (struct dprc_cmd_set_obj_irq *)cmd.params;
|
|
+ cmd_params->irq_val = cpu_to_le32(irq_cfg->val);
|
|
+ cmd_params->irq_index = irq_index;
|
|
+ cmd_params->irq_addr = cpu_to_le64(irq_cfg->paddr);
|
|
+ cmd_params->irq_num = cpu_to_le32(irq_cfg->irq_num);
|
|
+ cmd_params->obj_id = cpu_to_le32(obj_id);
|
|
+ strncpy(cmd_params->obj_type, obj_type, 16);
|
|
+ cmd_params->obj_type[15] = '\0';
|
|
+
|
|
+ /* send command to mc*/
|
|
+ return mc_send_command(mc_io, &cmd);
|
|
+}
|
|
+EXPORT_SYMBOL_GPL(dprc_set_obj_irq);
|
|
+
|
|
+/**
|
|
+ * dprc_get_obj_region() - Get region information for a specified object.
|
|
+ * @mc_io: Pointer to MC portal's I/O object
|
|
+ * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
|
|
+ * @token: Token of DPRC object
|
|
+ * @obj_type; Object type as returned in dprc_get_obj()
|
|
+ * @obj_id: Unique object instance as returned in dprc_get_obj()
|
|
+ * @region_index: The specific region to query
|
|
+ * @region_desc: Returns the requested region descriptor
|
|
+ *
|
|
+ * Return: '0' on Success; Error code otherwise.
|
|
+ */
|
|
+int dprc_get_obj_region(struct fsl_mc_io *mc_io,
|
|
+ u32 cmd_flags,
|
|
+ u16 token,
|
|
+ char *obj_type,
|
|
+ int obj_id,
|
|
+ u8 region_index,
|
|
+ struct dprc_region_desc *region_desc)
|
|
+{
|
|
+ struct fsl_mc_command cmd = { 0 };
|
|
+ struct dprc_cmd_get_obj_region *cmd_params;
|
|
+ struct dprc_rsp_get_obj_region *rsp_params;
|
|
+ int err;
|
|
+
|
|
+ /* prepare command */
|
|
+ cmd.header = mc_encode_cmd_header(DPRC_CMDID_GET_OBJ_REG,
|
|
+ cmd_flags, token);
|
|
+ cmd_params = (struct dprc_cmd_get_obj_region *)cmd.params;
|
|
+ cmd_params->obj_id = cpu_to_le32(obj_id);
|
|
+ cmd_params->region_index = region_index;
|
|
+ strncpy(cmd_params->obj_type, obj_type, 16);
|
|
+ cmd_params->obj_type[15] = '\0';
|
|
+
|
|
+ /* send command to mc*/
|
|
+ err = mc_send_command(mc_io, &cmd);
|
|
+ if (err)
|
|
+ return err;
|
|
+
|
|
+ /* retrieve response parameters */
|
|
+ rsp_params = (struct dprc_rsp_get_obj_region *)cmd.params;
|
|
+ region_desc->base_offset = le32_to_cpu(rsp_params->base_addr);
|
|
+ region_desc->size = le32_to_cpu(rsp_params->size);
|
|
+ region_desc->type = rsp_params->type;
|
|
+ region_desc->flags = le32_to_cpu(rsp_params->flags);
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+EXPORT_SYMBOL_GPL(dprc_get_obj_region);
|
|
+
|
|
+/**
|
|
+ * dprc_get_api_version - Get Data Path Resource Container API version
|
|
+ * @mc_io: Pointer to Mc portal's I/O object
|
|
+ * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
|
|
+ * @major_ver: Major version of Data Path Resource Container API
|
|
+ * @minor_ver: Minor version of Data Path Resource Container API
|
|
+ *
|
|
+ * Return: '0' on Success; Error code otherwise.
|
|
+ */
|
|
+int dprc_get_api_version(struct fsl_mc_io *mc_io,
|
|
+ u32 cmd_flags,
|
|
+ u16 *major_ver,
|
|
+ u16 *minor_ver)
|
|
+{
|
|
+ struct fsl_mc_command cmd = { 0 };
|
|
+ int err;
|
|
+
|
|
+ /* prepare command */
|
|
+ cmd.header = mc_encode_cmd_header(DPRC_CMDID_GET_API_VERSION,
|
|
+ cmd_flags, 0);
|
|
+
|
|
+ /* send command to mc */
|
|
+ err = mc_send_command(mc_io, &cmd);
|
|
+ if (err)
|
|
+ return err;
|
|
+
|
|
+ /* retrieve response parameters */
|
|
+ mc_cmd_read_api_version(&cmd, major_ver, minor_ver);
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+/**
|
|
+ * dprc_get_container_id - Get container ID associated with a given portal.
|
|
+ * @mc_io: Pointer to Mc portal's I/O object
|
|
+ * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
|
|
+ * @container_id: Requested container id
|
|
+ *
|
|
+ * Return: '0' on Success; Error code otherwise.
|
|
+ */
|
|
+int dprc_get_container_id(struct fsl_mc_io *mc_io,
|
|
+ u32 cmd_flags,
|
|
+ int *container_id)
|
|
+{
|
|
+ struct fsl_mc_command cmd = { 0 };
|
|
+ int err;
|
|
+
|
|
+ /* prepare command */
|
|
+ cmd.header = mc_encode_cmd_header(DPRC_CMDID_GET_CONT_ID,
|
|
+ cmd_flags,
|
|
+ 0);
|
|
+
|
|
+ /* send command to mc*/
|
|
+ err = mc_send_command(mc_io, &cmd);
|
|
+ if (err)
|
|
+ return err;
|
|
+
|
|
+ /* retrieve response parameters */
|
|
+ *container_id = (int)mc_cmd_read_object_id(&cmd);
|
|
+
|
|
+ return 0;
|
|
+}
|
|
--- a/drivers/staging/fsl-mc/bus/fsl-mc-allocator.c
|
|
+++ /dev/null
|
|
@@ -1,663 +0,0 @@
|
|
-// SPDX-License-Identifier: GPL-2.0
|
|
-/*
|
|
- * fsl-mc object allocator driver
|
|
- *
|
|
- * Copyright (C) 2013-2016 Freescale Semiconductor, Inc.
|
|
- *
|
|
- */
|
|
-
|
|
-#include <linux/module.h>
|
|
-#include <linux/msi.h>
|
|
-#include "../include/mc.h"
|
|
-
|
|
-#include "fsl-mc-private.h"
|
|
-
|
|
-static bool __must_check fsl_mc_is_allocatable(const char *obj_type)
|
|
-{
|
|
- return strcmp(obj_type, "dpbp") == 0 ||
|
|
- strcmp(obj_type, "dpmcp") == 0 ||
|
|
- strcmp(obj_type, "dpcon") == 0;
|
|
-}
|
|
-
|
|
-/**
|
|
- * fsl_mc_resource_pool_add_device - add allocatable object to a resource
|
|
- * pool of a given fsl-mc bus
|
|
- *
|
|
- * @mc_bus: pointer to the fsl-mc bus
|
|
- * @pool_type: pool type
|
|
- * @mc_dev: pointer to allocatable fsl-mc device
|
|
- */
|
|
-static int __must_check fsl_mc_resource_pool_add_device(struct fsl_mc_bus
|
|
- *mc_bus,
|
|
- enum fsl_mc_pool_type
|
|
- pool_type,
|
|
- struct fsl_mc_device
|
|
- *mc_dev)
|
|
-{
|
|
- struct fsl_mc_resource_pool *res_pool;
|
|
- struct fsl_mc_resource *resource;
|
|
- struct fsl_mc_device *mc_bus_dev = &mc_bus->mc_dev;
|
|
- int error = -EINVAL;
|
|
-
|
|
- if (WARN_ON(pool_type < 0 || pool_type >= FSL_MC_NUM_POOL_TYPES))
|
|
- goto out;
|
|
- if (WARN_ON(!fsl_mc_is_allocatable(mc_dev->obj_desc.type)))
|
|
- goto out;
|
|
- if (WARN_ON(mc_dev->resource))
|
|
- goto out;
|
|
-
|
|
- res_pool = &mc_bus->resource_pools[pool_type];
|
|
- if (WARN_ON(res_pool->type != pool_type))
|
|
- goto out;
|
|
- if (WARN_ON(res_pool->mc_bus != mc_bus))
|
|
- goto out;
|
|
-
|
|
- mutex_lock(&res_pool->mutex);
|
|
-
|
|
- if (WARN_ON(res_pool->max_count < 0))
|
|
- goto out_unlock;
|
|
- if (WARN_ON(res_pool->free_count < 0 ||
|
|
- res_pool->free_count > res_pool->max_count))
|
|
- goto out_unlock;
|
|
-
|
|
- resource = devm_kzalloc(&mc_bus_dev->dev, sizeof(*resource),
|
|
- GFP_KERNEL);
|
|
- if (!resource) {
|
|
- error = -ENOMEM;
|
|
- dev_err(&mc_bus_dev->dev,
|
|
- "Failed to allocate memory for fsl_mc_resource\n");
|
|
- goto out_unlock;
|
|
- }
|
|
-
|
|
- resource->type = pool_type;
|
|
- resource->id = mc_dev->obj_desc.id;
|
|
- resource->data = mc_dev;
|
|
- resource->parent_pool = res_pool;
|
|
- INIT_LIST_HEAD(&resource->node);
|
|
- list_add_tail(&resource->node, &res_pool->free_list);
|
|
- mc_dev->resource = resource;
|
|
- res_pool->free_count++;
|
|
- res_pool->max_count++;
|
|
- error = 0;
|
|
-out_unlock:
|
|
- mutex_unlock(&res_pool->mutex);
|
|
-out:
|
|
- return error;
|
|
-}
|
|
-
|
|
-/**
|
|
- * fsl_mc_resource_pool_remove_device - remove an allocatable device from a
|
|
- * resource pool
|
|
- *
|
|
- * @mc_dev: pointer to allocatable fsl-mc device
|
|
- *
|
|
- * It permanently removes an allocatable fsl-mc device from the resource
|
|
- * pool. It's an error if the device is in use.
|
|
- */
|
|
-static int __must_check fsl_mc_resource_pool_remove_device(struct fsl_mc_device
|
|
- *mc_dev)
|
|
-{
|
|
- struct fsl_mc_device *mc_bus_dev;
|
|
- struct fsl_mc_bus *mc_bus;
|
|
- struct fsl_mc_resource_pool *res_pool;
|
|
- struct fsl_mc_resource *resource;
|
|
- int error = -EINVAL;
|
|
-
|
|
- if (WARN_ON(!fsl_mc_is_allocatable(mc_dev->obj_desc.type)))
|
|
- goto out;
|
|
-
|
|
- resource = mc_dev->resource;
|
|
- if (WARN_ON(!resource || resource->data != mc_dev))
|
|
- goto out;
|
|
-
|
|
- mc_bus_dev = to_fsl_mc_device(mc_dev->dev.parent);
|
|
- mc_bus = to_fsl_mc_bus(mc_bus_dev);
|
|
- res_pool = resource->parent_pool;
|
|
- if (WARN_ON(res_pool != &mc_bus->resource_pools[resource->type]))
|
|
- goto out;
|
|
-
|
|
- mutex_lock(&res_pool->mutex);
|
|
-
|
|
- if (WARN_ON(res_pool->max_count <= 0))
|
|
- goto out_unlock;
|
|
- if (WARN_ON(res_pool->free_count <= 0 ||
|
|
- res_pool->free_count > res_pool->max_count))
|
|
- goto out_unlock;
|
|
-
|
|
- /*
|
|
- * If the device is currently allocated, its resource is not
|
|
- * in the free list and thus, the device cannot be removed.
|
|
- */
|
|
- if (list_empty(&resource->node)) {
|
|
- error = -EBUSY;
|
|
- dev_err(&mc_bus_dev->dev,
|
|
- "Device %s cannot be removed from resource pool\n",
|
|
- dev_name(&mc_dev->dev));
|
|
- goto out_unlock;
|
|
- }
|
|
-
|
|
- list_del_init(&resource->node);
|
|
- res_pool->free_count--;
|
|
- res_pool->max_count--;
|
|
-
|
|
- devm_kfree(&mc_bus_dev->dev, resource);
|
|
- mc_dev->resource = NULL;
|
|
- error = 0;
|
|
-out_unlock:
|
|
- mutex_unlock(&res_pool->mutex);
|
|
-out:
|
|
- return error;
|
|
-}
|
|
-
|
|
-static const char *const fsl_mc_pool_type_strings[] = {
|
|
- [FSL_MC_POOL_DPMCP] = "dpmcp",
|
|
- [FSL_MC_POOL_DPBP] = "dpbp",
|
|
- [FSL_MC_POOL_DPCON] = "dpcon",
|
|
- [FSL_MC_POOL_IRQ] = "irq",
|
|
-};
|
|
-
|
|
-static int __must_check object_type_to_pool_type(const char *object_type,
|
|
- enum fsl_mc_pool_type
|
|
- *pool_type)
|
|
-{
|
|
- unsigned int i;
|
|
-
|
|
- for (i = 0; i < ARRAY_SIZE(fsl_mc_pool_type_strings); i++) {
|
|
- if (strcmp(object_type, fsl_mc_pool_type_strings[i]) == 0) {
|
|
- *pool_type = i;
|
|
- return 0;
|
|
- }
|
|
- }
|
|
-
|
|
- return -EINVAL;
|
|
-}
|
|
-
|
|
-int __must_check fsl_mc_resource_allocate(struct fsl_mc_bus *mc_bus,
|
|
- enum fsl_mc_pool_type pool_type,
|
|
- struct fsl_mc_resource **new_resource)
|
|
-{
|
|
- struct fsl_mc_resource_pool *res_pool;
|
|
- struct fsl_mc_resource *resource;
|
|
- struct fsl_mc_device *mc_bus_dev = &mc_bus->mc_dev;
|
|
- int error = -EINVAL;
|
|
-
|
|
- BUILD_BUG_ON(ARRAY_SIZE(fsl_mc_pool_type_strings) !=
|
|
- FSL_MC_NUM_POOL_TYPES);
|
|
-
|
|
- *new_resource = NULL;
|
|
- if (WARN_ON(pool_type < 0 || pool_type >= FSL_MC_NUM_POOL_TYPES))
|
|
- goto out;
|
|
-
|
|
- res_pool = &mc_bus->resource_pools[pool_type];
|
|
- if (WARN_ON(res_pool->mc_bus != mc_bus))
|
|
- goto out;
|
|
-
|
|
- mutex_lock(&res_pool->mutex);
|
|
- resource = list_first_entry_or_null(&res_pool->free_list,
|
|
- struct fsl_mc_resource, node);
|
|
-
|
|
- if (!resource) {
|
|
- WARN_ON(res_pool->free_count != 0);
|
|
- error = -ENXIO;
|
|
- dev_err(&mc_bus_dev->dev,
|
|
- "No more resources of type %s left\n",
|
|
- fsl_mc_pool_type_strings[pool_type]);
|
|
- goto out_unlock;
|
|
- }
|
|
-
|
|
- if (WARN_ON(resource->type != pool_type))
|
|
- goto out_unlock;
|
|
- if (WARN_ON(resource->parent_pool != res_pool))
|
|
- goto out_unlock;
|
|
- if (WARN_ON(res_pool->free_count <= 0 ||
|
|
- res_pool->free_count > res_pool->max_count))
|
|
- goto out_unlock;
|
|
-
|
|
- list_del_init(&resource->node);
|
|
-
|
|
- res_pool->free_count--;
|
|
- error = 0;
|
|
-out_unlock:
|
|
- mutex_unlock(&res_pool->mutex);
|
|
- *new_resource = resource;
|
|
-out:
|
|
- return error;
|
|
-}
|
|
-EXPORT_SYMBOL_GPL(fsl_mc_resource_allocate);
|
|
-
|
|
-void fsl_mc_resource_free(struct fsl_mc_resource *resource)
|
|
-{
|
|
- struct fsl_mc_resource_pool *res_pool;
|
|
-
|
|
- res_pool = resource->parent_pool;
|
|
- if (WARN_ON(resource->type != res_pool->type))
|
|
- return;
|
|
-
|
|
- mutex_lock(&res_pool->mutex);
|
|
- if (WARN_ON(res_pool->free_count < 0 ||
|
|
- res_pool->free_count >= res_pool->max_count))
|
|
- goto out_unlock;
|
|
-
|
|
- if (WARN_ON(!list_empty(&resource->node)))
|
|
- goto out_unlock;
|
|
-
|
|
- list_add_tail(&resource->node, &res_pool->free_list);
|
|
- res_pool->free_count++;
|
|
-out_unlock:
|
|
- mutex_unlock(&res_pool->mutex);
|
|
-}
|
|
-EXPORT_SYMBOL_GPL(fsl_mc_resource_free);
|
|
-
|
|
-/**
|
|
- * fsl_mc_object_allocate - Allocates an fsl-mc object of the given
|
|
- * pool type from a given fsl-mc bus instance
|
|
- *
|
|
- * @mc_dev: fsl-mc device which is used in conjunction with the
|
|
- * allocated object
|
|
- * @pool_type: pool type
|
|
- * @new_mc_dev: pointer to area where the pointer to the allocated device
|
|
- * is to be returned
|
|
- *
|
|
- * Allocatable objects are always used in conjunction with some functional
|
|
- * device. This function allocates an object of the specified type from
|
|
- * the DPRC containing the functional device.
|
|
- *
|
|
- * NOTE: pool_type must be different from FSL_MC_POOL_MCP, since MC
|
|
- * portals are allocated using fsl_mc_portal_allocate(), instead of
|
|
- * this function.
|
|
- */
|
|
-int __must_check fsl_mc_object_allocate(struct fsl_mc_device *mc_dev,
|
|
- enum fsl_mc_pool_type pool_type,
|
|
- struct fsl_mc_device **new_mc_adev)
|
|
-{
|
|
- struct fsl_mc_device *mc_bus_dev;
|
|
- struct fsl_mc_bus *mc_bus;
|
|
- struct fsl_mc_device *mc_adev;
|
|
- int error = -EINVAL;
|
|
- struct fsl_mc_resource *resource = NULL;
|
|
-
|
|
- *new_mc_adev = NULL;
|
|
- if (WARN_ON(mc_dev->flags & FSL_MC_IS_DPRC))
|
|
- goto error;
|
|
-
|
|
- if (WARN_ON(!dev_is_fsl_mc(mc_dev->dev.parent)))
|
|
- goto error;
|
|
-
|
|
- if (WARN_ON(pool_type == FSL_MC_POOL_DPMCP))
|
|
- goto error;
|
|
-
|
|
- mc_bus_dev = to_fsl_mc_device(mc_dev->dev.parent);
|
|
- mc_bus = to_fsl_mc_bus(mc_bus_dev);
|
|
- error = fsl_mc_resource_allocate(mc_bus, pool_type, &resource);
|
|
- if (error < 0)
|
|
- goto error;
|
|
-
|
|
- mc_adev = resource->data;
|
|
- if (WARN_ON(!mc_adev))
|
|
- goto error;
|
|
-
|
|
- *new_mc_adev = mc_adev;
|
|
- return 0;
|
|
-error:
|
|
- if (resource)
|
|
- fsl_mc_resource_free(resource);
|
|
-
|
|
- return error;
|
|
-}
|
|
-EXPORT_SYMBOL_GPL(fsl_mc_object_allocate);
|
|
-
|
|
-/**
|
|
- * fsl_mc_object_free - Returns an fsl-mc object to the resource
|
|
- * pool where it came from.
|
|
- * @mc_adev: Pointer to the fsl-mc device
|
|
- */
|
|
-void fsl_mc_object_free(struct fsl_mc_device *mc_adev)
|
|
-{
|
|
- struct fsl_mc_resource *resource;
|
|
-
|
|
- resource = mc_adev->resource;
|
|
- if (WARN_ON(resource->type == FSL_MC_POOL_DPMCP))
|
|
- return;
|
|
- if (WARN_ON(resource->data != mc_adev))
|
|
- return;
|
|
-
|
|
- fsl_mc_resource_free(resource);
|
|
-}
|
|
-EXPORT_SYMBOL_GPL(fsl_mc_object_free);
|
|
-
|
|
-/*
|
|
- * A DPRC and the devices in the DPRC all share the same GIC-ITS device
|
|
- * ID. A block of IRQs is pre-allocated and maintained in a pool
|
|
- * from which devices can allocate them when needed.
|
|
- */
|
|
-
|
|
-/*
|
|
- * Initialize the interrupt pool associated with an fsl-mc bus.
|
|
- * It allocates a block of IRQs from the GIC-ITS.
|
|
- */
|
|
-int fsl_mc_populate_irq_pool(struct fsl_mc_bus *mc_bus,
|
|
- unsigned int irq_count)
|
|
-{
|
|
- unsigned int i;
|
|
- struct msi_desc *msi_desc;
|
|
- struct fsl_mc_device_irq *irq_resources;
|
|
- struct fsl_mc_device_irq *mc_dev_irq;
|
|
- int error;
|
|
- struct fsl_mc_device *mc_bus_dev = &mc_bus->mc_dev;
|
|
- struct fsl_mc_resource_pool *res_pool =
|
|
- &mc_bus->resource_pools[FSL_MC_POOL_IRQ];
|
|
-
|
|
- if (WARN_ON(irq_count == 0 ||
|
|
- irq_count > FSL_MC_IRQ_POOL_MAX_TOTAL_IRQS))
|
|
- return -EINVAL;
|
|
-
|
|
- error = fsl_mc_msi_domain_alloc_irqs(&mc_bus_dev->dev, irq_count);
|
|
- if (error < 0)
|
|
- return error;
|
|
-
|
|
- irq_resources = devm_kzalloc(&mc_bus_dev->dev,
|
|
- sizeof(*irq_resources) * irq_count,
|
|
- GFP_KERNEL);
|
|
- if (!irq_resources) {
|
|
- error = -ENOMEM;
|
|
- goto cleanup_msi_irqs;
|
|
- }
|
|
-
|
|
- for (i = 0; i < irq_count; i++) {
|
|
- mc_dev_irq = &irq_resources[i];
|
|
-
|
|
- /*
|
|
- * NOTE: This mc_dev_irq's MSI addr/value pair will be set
|
|
- * by the fsl_mc_msi_write_msg() callback
|
|
- */
|
|
- mc_dev_irq->resource.type = res_pool->type;
|
|
- mc_dev_irq->resource.data = mc_dev_irq;
|
|
- mc_dev_irq->resource.parent_pool = res_pool;
|
|
- INIT_LIST_HEAD(&mc_dev_irq->resource.node);
|
|
- list_add_tail(&mc_dev_irq->resource.node, &res_pool->free_list);
|
|
- }
|
|
-
|
|
- for_each_msi_entry(msi_desc, &mc_bus_dev->dev) {
|
|
- mc_dev_irq = &irq_resources[msi_desc->fsl_mc.msi_index];
|
|
- mc_dev_irq->msi_desc = msi_desc;
|
|
- mc_dev_irq->resource.id = msi_desc->irq;
|
|
- }
|
|
-
|
|
- res_pool->max_count = irq_count;
|
|
- res_pool->free_count = irq_count;
|
|
- mc_bus->irq_resources = irq_resources;
|
|
- return 0;
|
|
-
|
|
-cleanup_msi_irqs:
|
|
- fsl_mc_msi_domain_free_irqs(&mc_bus_dev->dev);
|
|
- return error;
|
|
-}
|
|
-EXPORT_SYMBOL_GPL(fsl_mc_populate_irq_pool);
|
|
-
|
|
-/**
|
|
- * Teardown the interrupt pool associated with an fsl-mc bus.
|
|
- * It frees the IRQs that were allocated to the pool, back to the GIC-ITS.
|
|
- */
|
|
-void fsl_mc_cleanup_irq_pool(struct fsl_mc_bus *mc_bus)
|
|
-{
|
|
- struct fsl_mc_device *mc_bus_dev = &mc_bus->mc_dev;
|
|
- struct fsl_mc_resource_pool *res_pool =
|
|
- &mc_bus->resource_pools[FSL_MC_POOL_IRQ];
|
|
-
|
|
- if (WARN_ON(!mc_bus->irq_resources))
|
|
- return;
|
|
-
|
|
- if (WARN_ON(res_pool->max_count == 0))
|
|
- return;
|
|
-
|
|
- if (WARN_ON(res_pool->free_count != res_pool->max_count))
|
|
- return;
|
|
-
|
|
- INIT_LIST_HEAD(&res_pool->free_list);
|
|
- res_pool->max_count = 0;
|
|
- res_pool->free_count = 0;
|
|
- mc_bus->irq_resources = NULL;
|
|
- fsl_mc_msi_domain_free_irqs(&mc_bus_dev->dev);
|
|
-}
|
|
-EXPORT_SYMBOL_GPL(fsl_mc_cleanup_irq_pool);
|
|
-
|
|
-/**
|
|
- * Allocate the IRQs required by a given fsl-mc device.
|
|
- */
|
|
-int __must_check fsl_mc_allocate_irqs(struct fsl_mc_device *mc_dev)
|
|
-{
|
|
- int i;
|
|
- int irq_count;
|
|
- int res_allocated_count = 0;
|
|
- int error = -EINVAL;
|
|
- struct fsl_mc_device_irq **irqs = NULL;
|
|
- struct fsl_mc_bus *mc_bus;
|
|
- struct fsl_mc_resource_pool *res_pool;
|
|
-
|
|
- if (WARN_ON(mc_dev->irqs))
|
|
- return -EINVAL;
|
|
-
|
|
- irq_count = mc_dev->obj_desc.irq_count;
|
|
- if (WARN_ON(irq_count == 0))
|
|
- return -EINVAL;
|
|
-
|
|
- if (strcmp(mc_dev->obj_desc.type, "dprc") == 0)
|
|
- mc_bus = to_fsl_mc_bus(mc_dev);
|
|
- else
|
|
- mc_bus = to_fsl_mc_bus(to_fsl_mc_device(mc_dev->dev.parent));
|
|
-
|
|
- if (WARN_ON(!mc_bus->irq_resources))
|
|
- return -EINVAL;
|
|
-
|
|
- res_pool = &mc_bus->resource_pools[FSL_MC_POOL_IRQ];
|
|
- if (res_pool->free_count < irq_count) {
|
|
- dev_err(&mc_dev->dev,
|
|
- "Not able to allocate %u irqs for device\n", irq_count);
|
|
- return -ENOSPC;
|
|
- }
|
|
-
|
|
- irqs = devm_kzalloc(&mc_dev->dev, irq_count * sizeof(irqs[0]),
|
|
- GFP_KERNEL);
|
|
- if (!irqs)
|
|
- return -ENOMEM;
|
|
-
|
|
- for (i = 0; i < irq_count; i++) {
|
|
- struct fsl_mc_resource *resource;
|
|
-
|
|
- error = fsl_mc_resource_allocate(mc_bus, FSL_MC_POOL_IRQ,
|
|
- &resource);
|
|
- if (error < 0)
|
|
- goto error_resource_alloc;
|
|
-
|
|
- irqs[i] = to_fsl_mc_irq(resource);
|
|
- res_allocated_count++;
|
|
-
|
|
- WARN_ON(irqs[i]->mc_dev);
|
|
- irqs[i]->mc_dev = mc_dev;
|
|
- irqs[i]->dev_irq_index = i;
|
|
- }
|
|
-
|
|
- mc_dev->irqs = irqs;
|
|
- return 0;
|
|
-
|
|
-error_resource_alloc:
|
|
- for (i = 0; i < res_allocated_count; i++) {
|
|
- irqs[i]->mc_dev = NULL;
|
|
- fsl_mc_resource_free(&irqs[i]->resource);
|
|
- }
|
|
-
|
|
- return error;
|
|
-}
|
|
-EXPORT_SYMBOL_GPL(fsl_mc_allocate_irqs);
|
|
-
|
|
-/*
|
|
- * Frees the IRQs that were allocated for an fsl-mc device.
|
|
- */
|
|
-void fsl_mc_free_irqs(struct fsl_mc_device *mc_dev)
|
|
-{
|
|
- int i;
|
|
- int irq_count;
|
|
- struct fsl_mc_bus *mc_bus;
|
|
- struct fsl_mc_device_irq **irqs = mc_dev->irqs;
|
|
-
|
|
- if (WARN_ON(!irqs))
|
|
- return;
|
|
-
|
|
- irq_count = mc_dev->obj_desc.irq_count;
|
|
-
|
|
- if (strcmp(mc_dev->obj_desc.type, "dprc") == 0)
|
|
- mc_bus = to_fsl_mc_bus(mc_dev);
|
|
- else
|
|
- mc_bus = to_fsl_mc_bus(to_fsl_mc_device(mc_dev->dev.parent));
|
|
-
|
|
- if (WARN_ON(!mc_bus->irq_resources))
|
|
- return;
|
|
-
|
|
- for (i = 0; i < irq_count; i++) {
|
|
- WARN_ON(!irqs[i]->mc_dev);
|
|
- irqs[i]->mc_dev = NULL;
|
|
- fsl_mc_resource_free(&irqs[i]->resource);
|
|
- }
|
|
-
|
|
- mc_dev->irqs = NULL;
|
|
-}
|
|
-EXPORT_SYMBOL_GPL(fsl_mc_free_irqs);
|
|
-
|
|
-void fsl_mc_init_all_resource_pools(struct fsl_mc_device *mc_bus_dev)
|
|
-{
|
|
- int pool_type;
|
|
- struct fsl_mc_bus *mc_bus = to_fsl_mc_bus(mc_bus_dev);
|
|
-
|
|
- for (pool_type = 0; pool_type < FSL_MC_NUM_POOL_TYPES; pool_type++) {
|
|
- struct fsl_mc_resource_pool *res_pool =
|
|
- &mc_bus->resource_pools[pool_type];
|
|
-
|
|
- res_pool->type = pool_type;
|
|
- res_pool->max_count = 0;
|
|
- res_pool->free_count = 0;
|
|
- res_pool->mc_bus = mc_bus;
|
|
- INIT_LIST_HEAD(&res_pool->free_list);
|
|
- mutex_init(&res_pool->mutex);
|
|
- }
|
|
-}
|
|
-
|
|
-static void fsl_mc_cleanup_resource_pool(struct fsl_mc_device *mc_bus_dev,
|
|
- enum fsl_mc_pool_type pool_type)
|
|
-{
|
|
- struct fsl_mc_resource *resource;
|
|
- struct fsl_mc_resource *next;
|
|
- struct fsl_mc_bus *mc_bus = to_fsl_mc_bus(mc_bus_dev);
|
|
- struct fsl_mc_resource_pool *res_pool =
|
|
- &mc_bus->resource_pools[pool_type];
|
|
- int free_count = 0;
|
|
-
|
|
- WARN_ON(res_pool->type != pool_type);
|
|
- WARN_ON(res_pool->free_count != res_pool->max_count);
|
|
-
|
|
- list_for_each_entry_safe(resource, next, &res_pool->free_list, node) {
|
|
- free_count++;
|
|
- WARN_ON(resource->type != res_pool->type);
|
|
- WARN_ON(resource->parent_pool != res_pool);
|
|
- devm_kfree(&mc_bus_dev->dev, resource);
|
|
- }
|
|
-
|
|
- WARN_ON(free_count != res_pool->free_count);
|
|
-}
|
|
-
|
|
-void fsl_mc_cleanup_all_resource_pools(struct fsl_mc_device *mc_bus_dev)
|
|
-{
|
|
- int pool_type;
|
|
-
|
|
- for (pool_type = 0; pool_type < FSL_MC_NUM_POOL_TYPES; pool_type++)
|
|
- fsl_mc_cleanup_resource_pool(mc_bus_dev, pool_type);
|
|
-}
|
|
-
|
|
-/**
|
|
- * fsl_mc_allocator_probe - callback invoked when an allocatable device is
|
|
- * being added to the system
|
|
- */
|
|
-static int fsl_mc_allocator_probe(struct fsl_mc_device *mc_dev)
|
|
-{
|
|
- enum fsl_mc_pool_type pool_type;
|
|
- struct fsl_mc_device *mc_bus_dev;
|
|
- struct fsl_mc_bus *mc_bus;
|
|
- int error;
|
|
-
|
|
- if (WARN_ON(!fsl_mc_is_allocatable(mc_dev->obj_desc.type)))
|
|
- return -EINVAL;
|
|
-
|
|
- mc_bus_dev = to_fsl_mc_device(mc_dev->dev.parent);
|
|
- if (WARN_ON(!dev_is_fsl_mc(&mc_bus_dev->dev)))
|
|
- return -EINVAL;
|
|
-
|
|
- mc_bus = to_fsl_mc_bus(mc_bus_dev);
|
|
- error = object_type_to_pool_type(mc_dev->obj_desc.type, &pool_type);
|
|
- if (error < 0)
|
|
- return error;
|
|
-
|
|
- error = fsl_mc_resource_pool_add_device(mc_bus, pool_type, mc_dev);
|
|
- if (error < 0)
|
|
- return error;
|
|
-
|
|
- dev_dbg(&mc_dev->dev,
|
|
- "Allocatable fsl-mc device bound to fsl_mc_allocator driver");
|
|
- return 0;
|
|
-}
|
|
-
|
|
-/**
|
|
- * fsl_mc_allocator_remove - callback invoked when an allocatable device is
|
|
- * being removed from the system
|
|
- */
|
|
-static int fsl_mc_allocator_remove(struct fsl_mc_device *mc_dev)
|
|
-{
|
|
- int error;
|
|
-
|
|
- if (WARN_ON(!fsl_mc_is_allocatable(mc_dev->obj_desc.type)))
|
|
- return -EINVAL;
|
|
-
|
|
- if (mc_dev->resource) {
|
|
- error = fsl_mc_resource_pool_remove_device(mc_dev);
|
|
- if (error < 0)
|
|
- return error;
|
|
- }
|
|
-
|
|
- dev_dbg(&mc_dev->dev,
|
|
- "Allocatable fsl-mc device unbound from fsl_mc_allocator driver");
|
|
- return 0;
|
|
-}
|
|
-
|
|
-static const struct fsl_mc_device_id match_id_table[] = {
|
|
- {
|
|
- .vendor = FSL_MC_VENDOR_FREESCALE,
|
|
- .obj_type = "dpbp",
|
|
- },
|
|
- {
|
|
- .vendor = FSL_MC_VENDOR_FREESCALE,
|
|
- .obj_type = "dpmcp",
|
|
- },
|
|
- {
|
|
- .vendor = FSL_MC_VENDOR_FREESCALE,
|
|
- .obj_type = "dpcon",
|
|
- },
|
|
- {.vendor = 0x0},
|
|
-};
|
|
-
|
|
-static struct fsl_mc_driver fsl_mc_allocator_driver = {
|
|
- .driver = {
|
|
- .name = "fsl_mc_allocator",
|
|
- .pm = NULL,
|
|
- },
|
|
- .match_id_table = match_id_table,
|
|
- .probe = fsl_mc_allocator_probe,
|
|
- .remove = fsl_mc_allocator_remove,
|
|
-};
|
|
-
|
|
-int __init fsl_mc_allocator_driver_init(void)
|
|
-{
|
|
- return fsl_mc_driver_register(&fsl_mc_allocator_driver);
|
|
-}
|
|
-
|
|
-void fsl_mc_allocator_driver_exit(void)
|
|
-{
|
|
- fsl_mc_driver_unregister(&fsl_mc_allocator_driver);
|
|
-}
|
|
--- /dev/null
|
|
+++ b/drivers/bus/fsl-mc/fsl-mc-allocator.c
|
|
@@ -0,0 +1,655 @@
|
|
+// SPDX-License-Identifier: GPL-2.0
|
|
+/*
|
|
+ * fsl-mc object allocator driver
|
|
+ *
|
|
+ * Copyright (C) 2013-2016 Freescale Semiconductor, Inc.
|
|
+ *
|
|
+ */
|
|
+
|
|
+#include <linux/module.h>
|
|
+#include <linux/msi.h>
|
|
+#include <linux/fsl/mc.h>
|
|
+
|
|
+#include "fsl-mc-private.h"
|
|
+
|
|
+static bool __must_check fsl_mc_is_allocatable(struct fsl_mc_device *mc_dev)
|
|
+{
|
|
+ return is_fsl_mc_bus_dpbp(mc_dev) ||
|
|
+ is_fsl_mc_bus_dpmcp(mc_dev) ||
|
|
+ is_fsl_mc_bus_dpcon(mc_dev);
|
|
+}
|
|
+
|
|
+/**
|
|
+ * fsl_mc_resource_pool_add_device - add allocatable object to a resource
|
|
+ * pool of a given fsl-mc bus
|
|
+ *
|
|
+ * @mc_bus: pointer to the fsl-mc bus
|
|
+ * @pool_type: pool type
|
|
+ * @mc_dev: pointer to allocatable fsl-mc device
|
|
+ */
|
|
+static int __must_check fsl_mc_resource_pool_add_device(struct fsl_mc_bus
|
|
+ *mc_bus,
|
|
+ enum fsl_mc_pool_type
|
|
+ pool_type,
|
|
+ struct fsl_mc_device
|
|
+ *mc_dev)
|
|
+{
|
|
+ struct fsl_mc_resource_pool *res_pool;
|
|
+ struct fsl_mc_resource *resource;
|
|
+ struct fsl_mc_device *mc_bus_dev = &mc_bus->mc_dev;
|
|
+ int error = -EINVAL;
|
|
+
|
|
+ if (pool_type < 0 || pool_type >= FSL_MC_NUM_POOL_TYPES)
|
|
+ goto out;
|
|
+ if (!fsl_mc_is_allocatable(mc_dev))
|
|
+ goto out;
|
|
+ if (mc_dev->resource)
|
|
+ goto out;
|
|
+
|
|
+ res_pool = &mc_bus->resource_pools[pool_type];
|
|
+ if (res_pool->type != pool_type)
|
|
+ goto out;
|
|
+ if (res_pool->mc_bus != mc_bus)
|
|
+ goto out;
|
|
+
|
|
+ mutex_lock(&res_pool->mutex);
|
|
+
|
|
+ if (res_pool->max_count < 0)
|
|
+ goto out_unlock;
|
|
+ if (res_pool->free_count < 0 ||
|
|
+ res_pool->free_count > res_pool->max_count)
|
|
+ goto out_unlock;
|
|
+
|
|
+ resource = devm_kzalloc(&mc_bus_dev->dev, sizeof(*resource),
|
|
+ GFP_KERNEL);
|
|
+ if (!resource) {
|
|
+ error = -ENOMEM;
|
|
+ dev_err(&mc_bus_dev->dev,
|
|
+ "Failed to allocate memory for fsl_mc_resource\n");
|
|
+ goto out_unlock;
|
|
+ }
|
|
+
|
|
+ resource->type = pool_type;
|
|
+ resource->id = mc_dev->obj_desc.id;
|
|
+ resource->data = mc_dev;
|
|
+ resource->parent_pool = res_pool;
|
|
+ INIT_LIST_HEAD(&resource->node);
|
|
+ list_add_tail(&resource->node, &res_pool->free_list);
|
|
+ mc_dev->resource = resource;
|
|
+ res_pool->free_count++;
|
|
+ res_pool->max_count++;
|
|
+ error = 0;
|
|
+out_unlock:
|
|
+ mutex_unlock(&res_pool->mutex);
|
|
+out:
|
|
+ return error;
|
|
+}
|
|
+
|
|
+/**
|
|
+ * fsl_mc_resource_pool_remove_device - remove an allocatable device from a
|
|
+ * resource pool
|
|
+ *
|
|
+ * @mc_dev: pointer to allocatable fsl-mc device
|
|
+ *
|
|
+ * It permanently removes an allocatable fsl-mc device from the resource
|
|
+ * pool. It's an error if the device is in use.
|
|
+ */
|
|
+static int __must_check fsl_mc_resource_pool_remove_device(struct fsl_mc_device
|
|
+ *mc_dev)
|
|
+{
|
|
+ struct fsl_mc_device *mc_bus_dev;
|
|
+ struct fsl_mc_bus *mc_bus;
|
|
+ struct fsl_mc_resource_pool *res_pool;
|
|
+ struct fsl_mc_resource *resource;
|
|
+ int error = -EINVAL;
|
|
+
|
|
+ if (!fsl_mc_is_allocatable(mc_dev))
|
|
+ goto out;
|
|
+
|
|
+ resource = mc_dev->resource;
|
|
+ if (!resource || resource->data != mc_dev)
|
|
+ goto out;
|
|
+
|
|
+ mc_bus_dev = to_fsl_mc_device(mc_dev->dev.parent);
|
|
+ mc_bus = to_fsl_mc_bus(mc_bus_dev);
|
|
+ res_pool = resource->parent_pool;
|
|
+ if (res_pool != &mc_bus->resource_pools[resource->type])
|
|
+ goto out;
|
|
+
|
|
+ mutex_lock(&res_pool->mutex);
|
|
+
|
|
+ if (res_pool->max_count <= 0)
|
|
+ goto out_unlock;
|
|
+ if (res_pool->free_count <= 0 ||
|
|
+ res_pool->free_count > res_pool->max_count)
|
|
+ goto out_unlock;
|
|
+
|
|
+ /*
|
|
+ * If the device is currently allocated, its resource is not
|
|
+ * in the free list and thus, the device cannot be removed.
|
|
+ */
|
|
+ if (list_empty(&resource->node)) {
|
|
+ error = -EBUSY;
|
|
+ dev_err(&mc_bus_dev->dev,
|
|
+ "Device %s cannot be removed from resource pool\n",
|
|
+ dev_name(&mc_dev->dev));
|
|
+ goto out_unlock;
|
|
+ }
|
|
+
|
|
+ list_del_init(&resource->node);
|
|
+ res_pool->free_count--;
|
|
+ res_pool->max_count--;
|
|
+
|
|
+ devm_kfree(&mc_bus_dev->dev, resource);
|
|
+ mc_dev->resource = NULL;
|
|
+ error = 0;
|
|
+out_unlock:
|
|
+ mutex_unlock(&res_pool->mutex);
|
|
+out:
|
|
+ return error;
|
|
+}
|
|
+
|
|
+static const char *const fsl_mc_pool_type_strings[] = {
|
|
+ [FSL_MC_POOL_DPMCP] = "dpmcp",
|
|
+ [FSL_MC_POOL_DPBP] = "dpbp",
|
|
+ [FSL_MC_POOL_DPCON] = "dpcon",
|
|
+ [FSL_MC_POOL_IRQ] = "irq",
|
|
+};
|
|
+
|
|
+static int __must_check object_type_to_pool_type(const char *object_type,
|
|
+ enum fsl_mc_pool_type
|
|
+ *pool_type)
|
|
+{
|
|
+ unsigned int i;
|
|
+
|
|
+ for (i = 0; i < ARRAY_SIZE(fsl_mc_pool_type_strings); i++) {
|
|
+ if (strcmp(object_type, fsl_mc_pool_type_strings[i]) == 0) {
|
|
+ *pool_type = i;
|
|
+ return 0;
|
|
+ }
|
|
+ }
|
|
+
|
|
+ return -EINVAL;
|
|
+}
|
|
+
|
|
+int __must_check fsl_mc_resource_allocate(struct fsl_mc_bus *mc_bus,
|
|
+ enum fsl_mc_pool_type pool_type,
|
|
+ struct fsl_mc_resource **new_resource)
|
|
+{
|
|
+ struct fsl_mc_resource_pool *res_pool;
|
|
+ struct fsl_mc_resource *resource;
|
|
+ struct fsl_mc_device *mc_bus_dev = &mc_bus->mc_dev;
|
|
+ int error = -EINVAL;
|
|
+
|
|
+ BUILD_BUG_ON(ARRAY_SIZE(fsl_mc_pool_type_strings) !=
|
|
+ FSL_MC_NUM_POOL_TYPES);
|
|
+
|
|
+ *new_resource = NULL;
|
|
+ if (pool_type < 0 || pool_type >= FSL_MC_NUM_POOL_TYPES)
|
|
+ goto out;
|
|
+
|
|
+ res_pool = &mc_bus->resource_pools[pool_type];
|
|
+ if (res_pool->mc_bus != mc_bus)
|
|
+ goto out;
|
|
+
|
|
+ mutex_lock(&res_pool->mutex);
|
|
+ resource = list_first_entry_or_null(&res_pool->free_list,
|
|
+ struct fsl_mc_resource, node);
|
|
+
|
|
+ if (!resource) {
|
|
+ error = -ENXIO;
|
|
+ dev_err(&mc_bus_dev->dev,
|
|
+ "No more resources of type %s left\n",
|
|
+ fsl_mc_pool_type_strings[pool_type]);
|
|
+ goto out_unlock;
|
|
+ }
|
|
+
|
|
+ if (resource->type != pool_type)
|
|
+ goto out_unlock;
|
|
+ if (resource->parent_pool != res_pool)
|
|
+ goto out_unlock;
|
|
+ if (res_pool->free_count <= 0 ||
|
|
+ res_pool->free_count > res_pool->max_count)
|
|
+ goto out_unlock;
|
|
+
|
|
+ list_del_init(&resource->node);
|
|
+
|
|
+ res_pool->free_count--;
|
|
+ error = 0;
|
|
+out_unlock:
|
|
+ mutex_unlock(&res_pool->mutex);
|
|
+ *new_resource = resource;
|
|
+out:
|
|
+ return error;
|
|
+}
|
|
+EXPORT_SYMBOL_GPL(fsl_mc_resource_allocate);
|
|
+
|
|
+void fsl_mc_resource_free(struct fsl_mc_resource *resource)
|
|
+{
|
|
+ struct fsl_mc_resource_pool *res_pool;
|
|
+
|
|
+ res_pool = resource->parent_pool;
|
|
+ if (resource->type != res_pool->type)
|
|
+ return;
|
|
+
|
|
+ mutex_lock(&res_pool->mutex);
|
|
+ if (res_pool->free_count < 0 ||
|
|
+ res_pool->free_count >= res_pool->max_count)
|
|
+ goto out_unlock;
|
|
+
|
|
+ if (!list_empty(&resource->node))
|
|
+ goto out_unlock;
|
|
+
|
|
+ list_add_tail(&resource->node, &res_pool->free_list);
|
|
+ res_pool->free_count++;
|
|
+out_unlock:
|
|
+ mutex_unlock(&res_pool->mutex);
|
|
+}
|
|
+EXPORT_SYMBOL_GPL(fsl_mc_resource_free);
|
|
+
|
|
+/**
|
|
+ * fsl_mc_object_allocate - Allocates an fsl-mc object of the given
|
|
+ * pool type from a given fsl-mc bus instance
|
|
+ *
|
|
+ * @mc_dev: fsl-mc device which is used in conjunction with the
|
|
+ * allocated object
|
|
+ * @pool_type: pool type
|
|
+ * @new_mc_dev: pointer to area where the pointer to the allocated device
|
|
+ * is to be returned
|
|
+ *
|
|
+ * Allocatable objects are always used in conjunction with some functional
|
|
+ * device. This function allocates an object of the specified type from
|
|
+ * the DPRC containing the functional device.
|
|
+ *
|
|
+ * NOTE: pool_type must be different from FSL_MC_POOL_MCP, since MC
|
|
+ * portals are allocated using fsl_mc_portal_allocate(), instead of
|
|
+ * this function.
|
|
+ */
|
|
+int __must_check fsl_mc_object_allocate(struct fsl_mc_device *mc_dev,
|
|
+ enum fsl_mc_pool_type pool_type,
|
|
+ struct fsl_mc_device **new_mc_adev)
|
|
+{
|
|
+ struct fsl_mc_device *mc_bus_dev;
|
|
+ struct fsl_mc_bus *mc_bus;
|
|
+ struct fsl_mc_device *mc_adev;
|
|
+ int error = -EINVAL;
|
|
+ struct fsl_mc_resource *resource = NULL;
|
|
+
|
|
+ *new_mc_adev = NULL;
|
|
+ if (mc_dev->flags & FSL_MC_IS_DPRC)
|
|
+ goto error;
|
|
+
|
|
+ if (!dev_is_fsl_mc(mc_dev->dev.parent))
|
|
+ goto error;
|
|
+
|
|
+ if (pool_type == FSL_MC_POOL_DPMCP)
|
|
+ goto error;
|
|
+
|
|
+ mc_bus_dev = to_fsl_mc_device(mc_dev->dev.parent);
|
|
+ mc_bus = to_fsl_mc_bus(mc_bus_dev);
|
|
+ error = fsl_mc_resource_allocate(mc_bus, pool_type, &resource);
|
|
+ if (error < 0)
|
|
+ goto error;
|
|
+
|
|
+ mc_adev = resource->data;
|
|
+ if (!mc_adev)
|
|
+ goto error;
|
|
+
|
|
+ *new_mc_adev = mc_adev;
|
|
+ return 0;
|
|
+error:
|
|
+ if (resource)
|
|
+ fsl_mc_resource_free(resource);
|
|
+
|
|
+ return error;
|
|
+}
|
|
+EXPORT_SYMBOL_GPL(fsl_mc_object_allocate);
|
|
+
|
|
+/**
|
|
+ * fsl_mc_object_free - Returns an fsl-mc object to the resource
|
|
+ * pool where it came from.
|
|
+ * @mc_adev: Pointer to the fsl-mc device
|
|
+ */
|
|
+void fsl_mc_object_free(struct fsl_mc_device *mc_adev)
|
|
+{
|
|
+ struct fsl_mc_resource *resource;
|
|
+
|
|
+ resource = mc_adev->resource;
|
|
+ if (resource->type == FSL_MC_POOL_DPMCP)
|
|
+ return;
|
|
+ if (resource->data != mc_adev)
|
|
+ return;
|
|
+
|
|
+ fsl_mc_resource_free(resource);
|
|
+}
|
|
+EXPORT_SYMBOL_GPL(fsl_mc_object_free);
|
|
+
|
|
+/*
|
|
+ * A DPRC and the devices in the DPRC all share the same GIC-ITS device
|
|
+ * ID. A block of IRQs is pre-allocated and maintained in a pool
|
|
+ * from which devices can allocate them when needed.
|
|
+ */
|
|
+
|
|
+/*
|
|
+ * Initialize the interrupt pool associated with an fsl-mc bus.
|
|
+ * It allocates a block of IRQs from the GIC-ITS.
|
|
+ */
|
|
+int fsl_mc_populate_irq_pool(struct fsl_mc_bus *mc_bus,
|
|
+ unsigned int irq_count)
|
|
+{
|
|
+ unsigned int i;
|
|
+ struct msi_desc *msi_desc;
|
|
+ struct fsl_mc_device_irq *irq_resources;
|
|
+ struct fsl_mc_device_irq *mc_dev_irq;
|
|
+ int error;
|
|
+ struct fsl_mc_device *mc_bus_dev = &mc_bus->mc_dev;
|
|
+ struct fsl_mc_resource_pool *res_pool =
|
|
+ &mc_bus->resource_pools[FSL_MC_POOL_IRQ];
|
|
+
|
|
+ if (irq_count == 0 ||
|
|
+ irq_count > FSL_MC_IRQ_POOL_MAX_TOTAL_IRQS)
|
|
+ return -EINVAL;
|
|
+
|
|
+ error = fsl_mc_msi_domain_alloc_irqs(&mc_bus_dev->dev, irq_count);
|
|
+ if (error < 0)
|
|
+ return error;
|
|
+
|
|
+ irq_resources = devm_kzalloc(&mc_bus_dev->dev,
|
|
+ sizeof(*irq_resources) * irq_count,
|
|
+ GFP_KERNEL);
|
|
+ if (!irq_resources) {
|
|
+ error = -ENOMEM;
|
|
+ goto cleanup_msi_irqs;
|
|
+ }
|
|
+
|
|
+ for (i = 0; i < irq_count; i++) {
|
|
+ mc_dev_irq = &irq_resources[i];
|
|
+
|
|
+ /*
|
|
+ * NOTE: This mc_dev_irq's MSI addr/value pair will be set
|
|
+ * by the fsl_mc_msi_write_msg() callback
|
|
+ */
|
|
+ mc_dev_irq->resource.type = res_pool->type;
|
|
+ mc_dev_irq->resource.data = mc_dev_irq;
|
|
+ mc_dev_irq->resource.parent_pool = res_pool;
|
|
+ INIT_LIST_HEAD(&mc_dev_irq->resource.node);
|
|
+ list_add_tail(&mc_dev_irq->resource.node, &res_pool->free_list);
|
|
+ }
|
|
+
|
|
+ for_each_msi_entry(msi_desc, &mc_bus_dev->dev) {
|
|
+ mc_dev_irq = &irq_resources[msi_desc->fsl_mc.msi_index];
|
|
+ mc_dev_irq->msi_desc = msi_desc;
|
|
+ mc_dev_irq->resource.id = msi_desc->irq;
|
|
+ }
|
|
+
|
|
+ res_pool->max_count = irq_count;
|
|
+ res_pool->free_count = irq_count;
|
|
+ mc_bus->irq_resources = irq_resources;
|
|
+ return 0;
|
|
+
|
|
+cleanup_msi_irqs:
|
|
+ fsl_mc_msi_domain_free_irqs(&mc_bus_dev->dev);
|
|
+ return error;
|
|
+}
|
|
+EXPORT_SYMBOL_GPL(fsl_mc_populate_irq_pool);
|
|
+
|
|
+/**
|
|
+ * Teardown the interrupt pool associated with an fsl-mc bus.
|
|
+ * It frees the IRQs that were allocated to the pool, back to the GIC-ITS.
|
|
+ */
|
|
+void fsl_mc_cleanup_irq_pool(struct fsl_mc_bus *mc_bus)
|
|
+{
|
|
+ struct fsl_mc_device *mc_bus_dev = &mc_bus->mc_dev;
|
|
+ struct fsl_mc_resource_pool *res_pool =
|
|
+ &mc_bus->resource_pools[FSL_MC_POOL_IRQ];
|
|
+
|
|
+ if (!mc_bus->irq_resources)
|
|
+ return;
|
|
+
|
|
+ if (res_pool->max_count == 0)
|
|
+ return;
|
|
+
|
|
+ if (res_pool->free_count != res_pool->max_count)
|
|
+ return;
|
|
+
|
|
+ INIT_LIST_HEAD(&res_pool->free_list);
|
|
+ res_pool->max_count = 0;
|
|
+ res_pool->free_count = 0;
|
|
+ mc_bus->irq_resources = NULL;
|
|
+ fsl_mc_msi_domain_free_irqs(&mc_bus_dev->dev);
|
|
+}
|
|
+EXPORT_SYMBOL_GPL(fsl_mc_cleanup_irq_pool);
|
|
+
|
|
+/**
|
|
+ * Allocate the IRQs required by a given fsl-mc device.
|
|
+ */
|
|
+int __must_check fsl_mc_allocate_irqs(struct fsl_mc_device *mc_dev)
|
|
+{
|
|
+ int i;
|
|
+ int irq_count;
|
|
+ int res_allocated_count = 0;
|
|
+ int error = -EINVAL;
|
|
+ struct fsl_mc_device_irq **irqs = NULL;
|
|
+ struct fsl_mc_bus *mc_bus;
|
|
+ struct fsl_mc_resource_pool *res_pool;
|
|
+
|
|
+ if (mc_dev->irqs)
|
|
+ return -EINVAL;
|
|
+
|
|
+ irq_count = mc_dev->obj_desc.irq_count;
|
|
+ if (irq_count == 0)
|
|
+ return -EINVAL;
|
|
+
|
|
+ if (is_fsl_mc_bus_dprc(mc_dev))
|
|
+ mc_bus = to_fsl_mc_bus(mc_dev);
|
|
+ else
|
|
+ mc_bus = to_fsl_mc_bus(to_fsl_mc_device(mc_dev->dev.parent));
|
|
+
|
|
+ if (!mc_bus->irq_resources)
|
|
+ return -EINVAL;
|
|
+
|
|
+ res_pool = &mc_bus->resource_pools[FSL_MC_POOL_IRQ];
|
|
+ if (res_pool->free_count < irq_count) {
|
|
+ dev_err(&mc_dev->dev,
|
|
+ "Not able to allocate %u irqs for device\n", irq_count);
|
|
+ return -ENOSPC;
|
|
+ }
|
|
+
|
|
+ irqs = devm_kzalloc(&mc_dev->dev, irq_count * sizeof(irqs[0]),
|
|
+ GFP_KERNEL);
|
|
+ if (!irqs)
|
|
+ return -ENOMEM;
|
|
+
|
|
+ for (i = 0; i < irq_count; i++) {
|
|
+ struct fsl_mc_resource *resource;
|
|
+
|
|
+ error = fsl_mc_resource_allocate(mc_bus, FSL_MC_POOL_IRQ,
|
|
+ &resource);
|
|
+ if (error < 0)
|
|
+ goto error_resource_alloc;
|
|
+
|
|
+ irqs[i] = to_fsl_mc_irq(resource);
|
|
+ res_allocated_count++;
|
|
+
|
|
+ irqs[i]->mc_dev = mc_dev;
|
|
+ irqs[i]->dev_irq_index = i;
|
|
+ }
|
|
+
|
|
+ mc_dev->irqs = irqs;
|
|
+ return 0;
|
|
+
|
|
+error_resource_alloc:
|
|
+ for (i = 0; i < res_allocated_count; i++) {
|
|
+ irqs[i]->mc_dev = NULL;
|
|
+ fsl_mc_resource_free(&irqs[i]->resource);
|
|
+ }
|
|
+
|
|
+ return error;
|
|
+}
|
|
+EXPORT_SYMBOL_GPL(fsl_mc_allocate_irqs);
|
|
+
|
|
+/*
|
|
+ * Frees the IRQs that were allocated for an fsl-mc device.
|
|
+ */
|
|
+void fsl_mc_free_irqs(struct fsl_mc_device *mc_dev)
|
|
+{
|
|
+ int i;
|
|
+ int irq_count;
|
|
+ struct fsl_mc_bus *mc_bus;
|
|
+ struct fsl_mc_device_irq **irqs = mc_dev->irqs;
|
|
+
|
|
+ if (!irqs)
|
|
+ return;
|
|
+
|
|
+ irq_count = mc_dev->obj_desc.irq_count;
|
|
+
|
|
+ if (is_fsl_mc_bus_dprc(mc_dev))
|
|
+ mc_bus = to_fsl_mc_bus(mc_dev);
|
|
+ else
|
|
+ mc_bus = to_fsl_mc_bus(to_fsl_mc_device(mc_dev->dev.parent));
|
|
+
|
|
+ if (!mc_bus->irq_resources)
|
|
+ return;
|
|
+
|
|
+ for (i = 0; i < irq_count; i++) {
|
|
+ irqs[i]->mc_dev = NULL;
|
|
+ fsl_mc_resource_free(&irqs[i]->resource);
|
|
+ }
|
|
+
|
|
+ mc_dev->irqs = NULL;
|
|
+}
|
|
+EXPORT_SYMBOL_GPL(fsl_mc_free_irqs);
|
|
+
|
|
+void fsl_mc_init_all_resource_pools(struct fsl_mc_device *mc_bus_dev)
|
|
+{
|
|
+ int pool_type;
|
|
+ struct fsl_mc_bus *mc_bus = to_fsl_mc_bus(mc_bus_dev);
|
|
+
|
|
+ for (pool_type = 0; pool_type < FSL_MC_NUM_POOL_TYPES; pool_type++) {
|
|
+ struct fsl_mc_resource_pool *res_pool =
|
|
+ &mc_bus->resource_pools[pool_type];
|
|
+
|
|
+ res_pool->type = pool_type;
|
|
+ res_pool->max_count = 0;
|
|
+ res_pool->free_count = 0;
|
|
+ res_pool->mc_bus = mc_bus;
|
|
+ INIT_LIST_HEAD(&res_pool->free_list);
|
|
+ mutex_init(&res_pool->mutex);
|
|
+ }
|
|
+}
|
|
+EXPORT_SYMBOL_GPL(fsl_mc_init_all_resource_pools);
|
|
+
|
|
+static void fsl_mc_cleanup_resource_pool(struct fsl_mc_device *mc_bus_dev,
|
|
+ enum fsl_mc_pool_type pool_type)
|
|
+{
|
|
+ struct fsl_mc_resource *resource;
|
|
+ struct fsl_mc_resource *next;
|
|
+ struct fsl_mc_bus *mc_bus = to_fsl_mc_bus(mc_bus_dev);
|
|
+ struct fsl_mc_resource_pool *res_pool =
|
|
+ &mc_bus->resource_pools[pool_type];
|
|
+ int free_count = 0;
|
|
+
|
|
+ list_for_each_entry_safe(resource, next, &res_pool->free_list, node) {
|
|
+ free_count++;
|
|
+ devm_kfree(&mc_bus_dev->dev, resource);
|
|
+ }
|
|
+}
|
|
+
|
|
+void fsl_mc_cleanup_all_resource_pools(struct fsl_mc_device *mc_bus_dev)
|
|
+{
|
|
+ int pool_type;
|
|
+
|
|
+ for (pool_type = 0; pool_type < FSL_MC_NUM_POOL_TYPES; pool_type++)
|
|
+ fsl_mc_cleanup_resource_pool(mc_bus_dev, pool_type);
|
|
+}
|
|
+EXPORT_SYMBOL_GPL(fsl_mc_cleanup_all_resource_pools);
|
|
+
|
|
+/**
|
|
+ * fsl_mc_allocator_probe - callback invoked when an allocatable device is
|
|
+ * being added to the system
|
|
+ */
|
|
+static int fsl_mc_allocator_probe(struct fsl_mc_device *mc_dev)
|
|
+{
|
|
+ enum fsl_mc_pool_type pool_type;
|
|
+ struct fsl_mc_device *mc_bus_dev;
|
|
+ struct fsl_mc_bus *mc_bus;
|
|
+ int error;
|
|
+
|
|
+ if (!fsl_mc_is_allocatable(mc_dev))
|
|
+ return -EINVAL;
|
|
+
|
|
+ mc_bus_dev = to_fsl_mc_device(mc_dev->dev.parent);
|
|
+ if (!dev_is_fsl_mc(&mc_bus_dev->dev))
|
|
+ return -EINVAL;
|
|
+
|
|
+ mc_bus = to_fsl_mc_bus(mc_bus_dev);
|
|
+ error = object_type_to_pool_type(mc_dev->obj_desc.type, &pool_type);
|
|
+ if (error < 0)
|
|
+ return error;
|
|
+
|
|
+ error = fsl_mc_resource_pool_add_device(mc_bus, pool_type, mc_dev);
|
|
+ if (error < 0)
|
|
+ return error;
|
|
+
|
|
+ dev_dbg(&mc_dev->dev,
|
|
+ "Allocatable fsl-mc device bound to fsl_mc_allocator driver");
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+/**
|
|
+ * fsl_mc_allocator_remove - callback invoked when an allocatable device is
|
|
+ * being removed from the system
|
|
+ */
|
|
+static int fsl_mc_allocator_remove(struct fsl_mc_device *mc_dev)
|
|
+{
|
|
+ int error;
|
|
+
|
|
+ if (!fsl_mc_is_allocatable(mc_dev))
|
|
+ return -EINVAL;
|
|
+
|
|
+ if (mc_dev->resource) {
|
|
+ error = fsl_mc_resource_pool_remove_device(mc_dev);
|
|
+ if (error < 0)
|
|
+ return error;
|
|
+ }
|
|
+
|
|
+ dev_dbg(&mc_dev->dev,
|
|
+ "Allocatable fsl-mc device unbound from fsl_mc_allocator driver");
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+static const struct fsl_mc_device_id match_id_table[] = {
|
|
+ {
|
|
+ .vendor = FSL_MC_VENDOR_FREESCALE,
|
|
+ .obj_type = "dpbp",
|
|
+ },
|
|
+ {
|
|
+ .vendor = FSL_MC_VENDOR_FREESCALE,
|
|
+ .obj_type = "dpmcp",
|
|
+ },
|
|
+ {
|
|
+ .vendor = FSL_MC_VENDOR_FREESCALE,
|
|
+ .obj_type = "dpcon",
|
|
+ },
|
|
+ {.vendor = 0x0},
|
|
+};
|
|
+
|
|
+static struct fsl_mc_driver fsl_mc_allocator_driver = {
|
|
+ .driver = {
|
|
+ .name = "fsl_mc_allocator",
|
|
+ .pm = NULL,
|
|
+ },
|
|
+ .match_id_table = match_id_table,
|
|
+ .probe = fsl_mc_allocator_probe,
|
|
+ .remove = fsl_mc_allocator_remove,
|
|
+};
|
|
+
|
|
+int __init fsl_mc_allocator_driver_init(void)
|
|
+{
|
|
+ return fsl_mc_driver_register(&fsl_mc_allocator_driver);
|
|
+}
|
|
+
|
|
+void fsl_mc_allocator_driver_exit(void)
|
|
+{
|
|
+ fsl_mc_driver_unregister(&fsl_mc_allocator_driver);
|
|
+}
|
|
--- a/drivers/staging/fsl-mc/bus/fsl-mc-bus.c
|
|
+++ /dev/null
|
|
@@ -1,900 +0,0 @@
|
|
-// SPDX-License-Identifier: GPL-2.0
|
|
-/*
|
|
- * Freescale Management Complex (MC) bus driver
|
|
- *
|
|
- * Copyright (C) 2014-2016 Freescale Semiconductor, Inc.
|
|
- * Author: German Rivera <German.Rivera@freescale.com>
|
|
- *
|
|
- */
|
|
-
|
|
-#define pr_fmt(fmt) "fsl-mc: " fmt
|
|
-
|
|
-#include <linux/module.h>
|
|
-#include <linux/of_device.h>
|
|
-#include <linux/of_address.h>
|
|
-#include <linux/ioport.h>
|
|
-#include <linux/slab.h>
|
|
-#include <linux/limits.h>
|
|
-#include <linux/bitops.h>
|
|
-#include <linux/msi.h>
|
|
-#include <linux/dma-mapping.h>
|
|
-
|
|
-#include "fsl-mc-private.h"
|
|
-#include "dprc-cmd.h"
|
|
-#include "dpmng-cmd.h"
|
|
-
|
|
-/**
|
|
- * Default DMA mask for devices on a fsl-mc bus
|
|
- */
|
|
-#define FSL_MC_DEFAULT_DMA_MASK (~0ULL)
|
|
-
|
|
-/**
|
|
- * struct fsl_mc - Private data of a "fsl,qoriq-mc" platform device
|
|
- * @root_mc_bus_dev: fsl-mc device representing the root DPRC
|
|
- * @num_translation_ranges: number of entries in addr_translation_ranges
|
|
- * @translation_ranges: array of bus to system address translation ranges
|
|
- */
|
|
-struct fsl_mc {
|
|
- struct fsl_mc_device *root_mc_bus_dev;
|
|
- u8 num_translation_ranges;
|
|
- struct fsl_mc_addr_translation_range *translation_ranges;
|
|
-};
|
|
-
|
|
-/**
|
|
- * struct fsl_mc_addr_translation_range - bus to system address translation
|
|
- * range
|
|
- * @mc_region_type: Type of MC region for the range being translated
|
|
- * @start_mc_offset: Start MC offset of the range being translated
|
|
- * @end_mc_offset: MC offset of the first byte after the range (last MC
|
|
- * offset of the range is end_mc_offset - 1)
|
|
- * @start_phys_addr: system physical address corresponding to start_mc_addr
|
|
- */
|
|
-struct fsl_mc_addr_translation_range {
|
|
- enum dprc_region_type mc_region_type;
|
|
- u64 start_mc_offset;
|
|
- u64 end_mc_offset;
|
|
- phys_addr_t start_phys_addr;
|
|
-};
|
|
-
|
|
-/**
|
|
- * struct mc_version
|
|
- * @major: Major version number: incremented on API compatibility changes
|
|
- * @minor: Minor version number: incremented on API additions (that are
|
|
- * backward compatible); reset when major version is incremented
|
|
- * @revision: Internal revision number: incremented on implementation changes
|
|
- * and/or bug fixes that have no impact on API
|
|
- */
|
|
-struct mc_version {
|
|
- u32 major;
|
|
- u32 minor;
|
|
- u32 revision;
|
|
-};
|
|
-
|
|
-/**
|
|
- * fsl_mc_bus_match - device to driver matching callback
|
|
- * @dev: the fsl-mc device to match against
|
|
- * @drv: the device driver to search for matching fsl-mc object type
|
|
- * structures
|
|
- *
|
|
- * Returns 1 on success, 0 otherwise.
|
|
- */
|
|
-static int fsl_mc_bus_match(struct device *dev, struct device_driver *drv)
|
|
-{
|
|
- const struct fsl_mc_device_id *id;
|
|
- struct fsl_mc_device *mc_dev = to_fsl_mc_device(dev);
|
|
- struct fsl_mc_driver *mc_drv = to_fsl_mc_driver(drv);
|
|
- bool found = false;
|
|
-
|
|
- if (!mc_drv->match_id_table)
|
|
- goto out;
|
|
-
|
|
- /*
|
|
- * If the object is not 'plugged' don't match.
|
|
- * Only exception is the root DPRC, which is a special case.
|
|
- */
|
|
- if ((mc_dev->obj_desc.state & FSL_MC_OBJ_STATE_PLUGGED) == 0 &&
|
|
- !fsl_mc_is_root_dprc(&mc_dev->dev))
|
|
- goto out;
|
|
-
|
|
- /*
|
|
- * Traverse the match_id table of the given driver, trying to find
|
|
- * a matching for the given device.
|
|
- */
|
|
- for (id = mc_drv->match_id_table; id->vendor != 0x0; id++) {
|
|
- if (id->vendor == mc_dev->obj_desc.vendor &&
|
|
- strcmp(id->obj_type, mc_dev->obj_desc.type) == 0) {
|
|
- found = true;
|
|
-
|
|
- break;
|
|
- }
|
|
- }
|
|
-
|
|
-out:
|
|
- dev_dbg(dev, "%smatched\n", found ? "" : "not ");
|
|
- return found;
|
|
-}
|
|
-
|
|
-/**
|
|
- * fsl_mc_bus_uevent - callback invoked when a device is added
|
|
- */
|
|
-static int fsl_mc_bus_uevent(struct device *dev, struct kobj_uevent_env *env)
|
|
-{
|
|
- struct fsl_mc_device *mc_dev = to_fsl_mc_device(dev);
|
|
-
|
|
- if (add_uevent_var(env, "MODALIAS=fsl-mc:v%08Xd%s",
|
|
- mc_dev->obj_desc.vendor,
|
|
- mc_dev->obj_desc.type))
|
|
- return -ENOMEM;
|
|
-
|
|
- return 0;
|
|
-}
|
|
-
|
|
-static ssize_t modalias_show(struct device *dev, struct device_attribute *attr,
|
|
- char *buf)
|
|
-{
|
|
- struct fsl_mc_device *mc_dev = to_fsl_mc_device(dev);
|
|
-
|
|
- return sprintf(buf, "fsl-mc:v%08Xd%s\n", mc_dev->obj_desc.vendor,
|
|
- mc_dev->obj_desc.type);
|
|
-}
|
|
-static DEVICE_ATTR_RO(modalias);
|
|
-
|
|
-static struct attribute *fsl_mc_dev_attrs[] = {
|
|
- &dev_attr_modalias.attr,
|
|
- NULL,
|
|
-};
|
|
-
|
|
-ATTRIBUTE_GROUPS(fsl_mc_dev);
|
|
-
|
|
-struct bus_type fsl_mc_bus_type = {
|
|
- .name = "fsl-mc",
|
|
- .match = fsl_mc_bus_match,
|
|
- .uevent = fsl_mc_bus_uevent,
|
|
- .dev_groups = fsl_mc_dev_groups,
|
|
-};
|
|
-EXPORT_SYMBOL_GPL(fsl_mc_bus_type);
|
|
-
|
|
-static int fsl_mc_driver_probe(struct device *dev)
|
|
-{
|
|
- struct fsl_mc_driver *mc_drv;
|
|
- struct fsl_mc_device *mc_dev = to_fsl_mc_device(dev);
|
|
- int error;
|
|
-
|
|
- if (WARN_ON(!dev->driver))
|
|
- return -EINVAL;
|
|
-
|
|
- mc_drv = to_fsl_mc_driver(dev->driver);
|
|
- if (WARN_ON(!mc_drv->probe))
|
|
- return -EINVAL;
|
|
-
|
|
- error = mc_drv->probe(mc_dev);
|
|
- if (error < 0) {
|
|
- dev_err(dev, "%s failed: %d\n", __func__, error);
|
|
- return error;
|
|
- }
|
|
-
|
|
- return 0;
|
|
-}
|
|
-
|
|
-static int fsl_mc_driver_remove(struct device *dev)
|
|
-{
|
|
- struct fsl_mc_driver *mc_drv = to_fsl_mc_driver(dev->driver);
|
|
- struct fsl_mc_device *mc_dev = to_fsl_mc_device(dev);
|
|
- int error;
|
|
-
|
|
- if (WARN_ON(!dev->driver))
|
|
- return -EINVAL;
|
|
-
|
|
- error = mc_drv->remove(mc_dev);
|
|
- if (error < 0) {
|
|
- dev_err(dev, "%s failed: %d\n", __func__, error);
|
|
- return error;
|
|
- }
|
|
-
|
|
- return 0;
|
|
-}
|
|
-
|
|
-static void fsl_mc_driver_shutdown(struct device *dev)
|
|
-{
|
|
- struct fsl_mc_driver *mc_drv = to_fsl_mc_driver(dev->driver);
|
|
- struct fsl_mc_device *mc_dev = to_fsl_mc_device(dev);
|
|
-
|
|
- mc_drv->shutdown(mc_dev);
|
|
-}
|
|
-
|
|
-/**
|
|
- * __fsl_mc_driver_register - registers a child device driver with the
|
|
- * MC bus
|
|
- *
|
|
- * This function is implicitly invoked from the registration function of
|
|
- * fsl_mc device drivers, which is generated by the
|
|
- * module_fsl_mc_driver() macro.
|
|
- */
|
|
-int __fsl_mc_driver_register(struct fsl_mc_driver *mc_driver,
|
|
- struct module *owner)
|
|
-{
|
|
- int error;
|
|
-
|
|
- mc_driver->driver.owner = owner;
|
|
- mc_driver->driver.bus = &fsl_mc_bus_type;
|
|
-
|
|
- if (mc_driver->probe)
|
|
- mc_driver->driver.probe = fsl_mc_driver_probe;
|
|
-
|
|
- if (mc_driver->remove)
|
|
- mc_driver->driver.remove = fsl_mc_driver_remove;
|
|
-
|
|
- if (mc_driver->shutdown)
|
|
- mc_driver->driver.shutdown = fsl_mc_driver_shutdown;
|
|
-
|
|
- error = driver_register(&mc_driver->driver);
|
|
- if (error < 0) {
|
|
- pr_err("driver_register() failed for %s: %d\n",
|
|
- mc_driver->driver.name, error);
|
|
- return error;
|
|
- }
|
|
-
|
|
- return 0;
|
|
-}
|
|
-EXPORT_SYMBOL_GPL(__fsl_mc_driver_register);
|
|
-
|
|
-/**
|
|
- * fsl_mc_driver_unregister - unregisters a device driver from the
|
|
- * MC bus
|
|
- */
|
|
-void fsl_mc_driver_unregister(struct fsl_mc_driver *mc_driver)
|
|
-{
|
|
- driver_unregister(&mc_driver->driver);
|
|
-}
|
|
-EXPORT_SYMBOL_GPL(fsl_mc_driver_unregister);
|
|
-
|
|
-/**
|
|
- * mc_get_version() - Retrieves the Management Complex firmware
|
|
- * version information
|
|
- * @mc_io: Pointer to opaque I/O object
|
|
- * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
|
|
- * @mc_ver_info: Returned version information structure
|
|
- *
|
|
- * Return: '0' on Success; Error code otherwise.
|
|
- */
|
|
-static int mc_get_version(struct fsl_mc_io *mc_io,
|
|
- u32 cmd_flags,
|
|
- struct mc_version *mc_ver_info)
|
|
-{
|
|
- struct mc_command cmd = { 0 };
|
|
- struct dpmng_rsp_get_version *rsp_params;
|
|
- int err;
|
|
-
|
|
- /* prepare command */
|
|
- cmd.header = mc_encode_cmd_header(DPMNG_CMDID_GET_VERSION,
|
|
- cmd_flags,
|
|
- 0);
|
|
-
|
|
- /* send command to mc*/
|
|
- err = mc_send_command(mc_io, &cmd);
|
|
- if (err)
|
|
- return err;
|
|
-
|
|
- /* retrieve response parameters */
|
|
- rsp_params = (struct dpmng_rsp_get_version *)cmd.params;
|
|
- mc_ver_info->revision = le32_to_cpu(rsp_params->revision);
|
|
- mc_ver_info->major = le32_to_cpu(rsp_params->version_major);
|
|
- mc_ver_info->minor = le32_to_cpu(rsp_params->version_minor);
|
|
-
|
|
- return 0;
|
|
-}
|
|
-
|
|
-/**
|
|
- * fsl_mc_get_root_dprc - function to traverse to the root dprc
|
|
- */
|
|
-static void fsl_mc_get_root_dprc(struct device *dev,
|
|
- struct device **root_dprc_dev)
|
|
-{
|
|
- if (WARN_ON(!dev)) {
|
|
- *root_dprc_dev = NULL;
|
|
- } else if (WARN_ON(!dev_is_fsl_mc(dev))) {
|
|
- *root_dprc_dev = NULL;
|
|
- } else {
|
|
- *root_dprc_dev = dev;
|
|
- while (dev_is_fsl_mc((*root_dprc_dev)->parent))
|
|
- *root_dprc_dev = (*root_dprc_dev)->parent;
|
|
- }
|
|
-}
|
|
-
|
|
-static int get_dprc_attr(struct fsl_mc_io *mc_io,
|
|
- int container_id, struct dprc_attributes *attr)
|
|
-{
|
|
- u16 dprc_handle;
|
|
- int error;
|
|
-
|
|
- error = dprc_open(mc_io, 0, container_id, &dprc_handle);
|
|
- if (error < 0) {
|
|
- dev_err(mc_io->dev, "dprc_open() failed: %d\n", error);
|
|
- return error;
|
|
- }
|
|
-
|
|
- memset(attr, 0, sizeof(struct dprc_attributes));
|
|
- error = dprc_get_attributes(mc_io, 0, dprc_handle, attr);
|
|
- if (error < 0) {
|
|
- dev_err(mc_io->dev, "dprc_get_attributes() failed: %d\n",
|
|
- error);
|
|
- goto common_cleanup;
|
|
- }
|
|
-
|
|
- error = 0;
|
|
-
|
|
-common_cleanup:
|
|
- (void)dprc_close(mc_io, 0, dprc_handle);
|
|
- return error;
|
|
-}
|
|
-
|
|
-static int get_dprc_icid(struct fsl_mc_io *mc_io,
|
|
- int container_id, u16 *icid)
|
|
-{
|
|
- struct dprc_attributes attr;
|
|
- int error;
|
|
-
|
|
- error = get_dprc_attr(mc_io, container_id, &attr);
|
|
- if (error == 0)
|
|
- *icid = attr.icid;
|
|
-
|
|
- return error;
|
|
-}
|
|
-
|
|
-static int translate_mc_addr(struct fsl_mc_device *mc_dev,
|
|
- enum dprc_region_type mc_region_type,
|
|
- u64 mc_offset, phys_addr_t *phys_addr)
|
|
-{
|
|
- int i;
|
|
- struct device *root_dprc_dev;
|
|
- struct fsl_mc *mc;
|
|
-
|
|
- fsl_mc_get_root_dprc(&mc_dev->dev, &root_dprc_dev);
|
|
- if (WARN_ON(!root_dprc_dev))
|
|
- return -EINVAL;
|
|
- mc = dev_get_drvdata(root_dprc_dev->parent);
|
|
-
|
|
- if (mc->num_translation_ranges == 0) {
|
|
- /*
|
|
- * Do identity mapping:
|
|
- */
|
|
- *phys_addr = mc_offset;
|
|
- return 0;
|
|
- }
|
|
-
|
|
- for (i = 0; i < mc->num_translation_ranges; i++) {
|
|
- struct fsl_mc_addr_translation_range *range =
|
|
- &mc->translation_ranges[i];
|
|
-
|
|
- if (mc_region_type == range->mc_region_type &&
|
|
- mc_offset >= range->start_mc_offset &&
|
|
- mc_offset < range->end_mc_offset) {
|
|
- *phys_addr = range->start_phys_addr +
|
|
- (mc_offset - range->start_mc_offset);
|
|
- return 0;
|
|
- }
|
|
- }
|
|
-
|
|
- return -EFAULT;
|
|
-}
|
|
-
|
|
-static int fsl_mc_device_get_mmio_regions(struct fsl_mc_device *mc_dev,
|
|
- struct fsl_mc_device *mc_bus_dev)
|
|
-{
|
|
- int i;
|
|
- int error;
|
|
- struct resource *regions;
|
|
- struct fsl_mc_obj_desc *obj_desc = &mc_dev->obj_desc;
|
|
- struct device *parent_dev = mc_dev->dev.parent;
|
|
- enum dprc_region_type mc_region_type;
|
|
-
|
|
- if (strcmp(obj_desc->type, "dprc") == 0 ||
|
|
- strcmp(obj_desc->type, "dpmcp") == 0) {
|
|
- mc_region_type = DPRC_REGION_TYPE_MC_PORTAL;
|
|
- } else if (strcmp(obj_desc->type, "dpio") == 0) {
|
|
- mc_region_type = DPRC_REGION_TYPE_QBMAN_PORTAL;
|
|
- } else {
|
|
- /*
|
|
- * This function should not have been called for this MC object
|
|
- * type, as this object type is not supposed to have MMIO
|
|
- * regions
|
|
- */
|
|
- WARN_ON(true);
|
|
- return -EINVAL;
|
|
- }
|
|
-
|
|
- regions = kmalloc_array(obj_desc->region_count,
|
|
- sizeof(regions[0]), GFP_KERNEL);
|
|
- if (!regions)
|
|
- return -ENOMEM;
|
|
-
|
|
- for (i = 0; i < obj_desc->region_count; i++) {
|
|
- struct dprc_region_desc region_desc;
|
|
-
|
|
- error = dprc_get_obj_region(mc_bus_dev->mc_io,
|
|
- 0,
|
|
- mc_bus_dev->mc_handle,
|
|
- obj_desc->type,
|
|
- obj_desc->id, i, ®ion_desc);
|
|
- if (error < 0) {
|
|
- dev_err(parent_dev,
|
|
- "dprc_get_obj_region() failed: %d\n", error);
|
|
- goto error_cleanup_regions;
|
|
- }
|
|
-
|
|
- WARN_ON(region_desc.size == 0);
|
|
- error = translate_mc_addr(mc_dev, mc_region_type,
|
|
- region_desc.base_offset,
|
|
- ®ions[i].start);
|
|
- if (error < 0) {
|
|
- dev_err(parent_dev,
|
|
- "Invalid MC offset: %#x (for %s.%d\'s region %d)\n",
|
|
- region_desc.base_offset,
|
|
- obj_desc->type, obj_desc->id, i);
|
|
- goto error_cleanup_regions;
|
|
- }
|
|
-
|
|
- regions[i].end = regions[i].start + region_desc.size - 1;
|
|
- regions[i].name = "fsl-mc object MMIO region";
|
|
- regions[i].flags = IORESOURCE_IO;
|
|
- if (region_desc.flags & DPRC_REGION_CACHEABLE)
|
|
- regions[i].flags |= IORESOURCE_CACHEABLE;
|
|
- }
|
|
-
|
|
- mc_dev->regions = regions;
|
|
- return 0;
|
|
-
|
|
-error_cleanup_regions:
|
|
- kfree(regions);
|
|
- return error;
|
|
-}
|
|
-
|
|
-/**
|
|
- * fsl_mc_is_root_dprc - function to check if a given device is a root dprc
|
|
- */
|
|
-bool fsl_mc_is_root_dprc(struct device *dev)
|
|
-{
|
|
- struct device *root_dprc_dev;
|
|
-
|
|
- fsl_mc_get_root_dprc(dev, &root_dprc_dev);
|
|
- if (!root_dprc_dev)
|
|
- return false;
|
|
- return dev == root_dprc_dev;
|
|
-}
|
|
-
|
|
-static void fsl_mc_device_release(struct device *dev)
|
|
-{
|
|
- struct fsl_mc_device *mc_dev = to_fsl_mc_device(dev);
|
|
-
|
|
- kfree(mc_dev->regions);
|
|
-
|
|
- if (strcmp(mc_dev->obj_desc.type, "dprc") == 0)
|
|
- kfree(to_fsl_mc_bus(mc_dev));
|
|
- else
|
|
- kfree(mc_dev);
|
|
-}
|
|
-
|
|
-/**
|
|
- * Add a newly discovered fsl-mc device to be visible in Linux
|
|
- */
|
|
-int fsl_mc_device_add(struct fsl_mc_obj_desc *obj_desc,
|
|
- struct fsl_mc_io *mc_io,
|
|
- struct device *parent_dev,
|
|
- struct fsl_mc_device **new_mc_dev)
|
|
-{
|
|
- int error;
|
|
- struct fsl_mc_device *mc_dev = NULL;
|
|
- struct fsl_mc_bus *mc_bus = NULL;
|
|
- struct fsl_mc_device *parent_mc_dev;
|
|
-
|
|
- if (dev_is_fsl_mc(parent_dev))
|
|
- parent_mc_dev = to_fsl_mc_device(parent_dev);
|
|
- else
|
|
- parent_mc_dev = NULL;
|
|
-
|
|
- if (strcmp(obj_desc->type, "dprc") == 0) {
|
|
- /*
|
|
- * Allocate an MC bus device object:
|
|
- */
|
|
- mc_bus = kzalloc(sizeof(*mc_bus), GFP_KERNEL);
|
|
- if (!mc_bus)
|
|
- return -ENOMEM;
|
|
-
|
|
- mc_dev = &mc_bus->mc_dev;
|
|
- } else {
|
|
- /*
|
|
- * Allocate a regular fsl_mc_device object:
|
|
- */
|
|
- mc_dev = kzalloc(sizeof(*mc_dev), GFP_KERNEL);
|
|
- if (!mc_dev)
|
|
- return -ENOMEM;
|
|
- }
|
|
-
|
|
- mc_dev->obj_desc = *obj_desc;
|
|
- mc_dev->mc_io = mc_io;
|
|
- device_initialize(&mc_dev->dev);
|
|
- mc_dev->dev.parent = parent_dev;
|
|
- mc_dev->dev.bus = &fsl_mc_bus_type;
|
|
- mc_dev->dev.release = fsl_mc_device_release;
|
|
- dev_set_name(&mc_dev->dev, "%s.%d", obj_desc->type, obj_desc->id);
|
|
-
|
|
- if (strcmp(obj_desc->type, "dprc") == 0) {
|
|
- struct fsl_mc_io *mc_io2;
|
|
-
|
|
- mc_dev->flags |= FSL_MC_IS_DPRC;
|
|
-
|
|
- /*
|
|
- * To get the DPRC's ICID, we need to open the DPRC
|
|
- * in get_dprc_icid(). For child DPRCs, we do so using the
|
|
- * parent DPRC's MC portal instead of the child DPRC's MC
|
|
- * portal, in case the child DPRC is already opened with
|
|
- * its own portal (e.g., the DPRC used by AIOP).
|
|
- *
|
|
- * NOTE: There cannot be more than one active open for a
|
|
- * given MC object, using the same MC portal.
|
|
- */
|
|
- if (parent_mc_dev) {
|
|
- /*
|
|
- * device being added is a child DPRC device
|
|
- */
|
|
- mc_io2 = parent_mc_dev->mc_io;
|
|
- } else {
|
|
- /*
|
|
- * device being added is the root DPRC device
|
|
- */
|
|
- if (WARN_ON(!mc_io)) {
|
|
- error = -EINVAL;
|
|
- goto error_cleanup_dev;
|
|
- }
|
|
-
|
|
- mc_io2 = mc_io;
|
|
- }
|
|
-
|
|
- error = get_dprc_icid(mc_io2, obj_desc->id, &mc_dev->icid);
|
|
- if (error < 0)
|
|
- goto error_cleanup_dev;
|
|
- } else {
|
|
- /*
|
|
- * A non-DPRC object has to be a child of a DPRC, use the
|
|
- * parent's ICID and interrupt domain.
|
|
- */
|
|
- mc_dev->icid = parent_mc_dev->icid;
|
|
- mc_dev->dma_mask = FSL_MC_DEFAULT_DMA_MASK;
|
|
- mc_dev->dev.dma_mask = &mc_dev->dma_mask;
|
|
- dev_set_msi_domain(&mc_dev->dev,
|
|
- dev_get_msi_domain(&parent_mc_dev->dev));
|
|
- }
|
|
-
|
|
- /*
|
|
- * Get MMIO regions for the device from the MC:
|
|
- *
|
|
- * NOTE: the root DPRC is a special case as its MMIO region is
|
|
- * obtained from the device tree
|
|
- */
|
|
- if (parent_mc_dev && obj_desc->region_count != 0) {
|
|
- error = fsl_mc_device_get_mmio_regions(mc_dev,
|
|
- parent_mc_dev);
|
|
- if (error < 0)
|
|
- goto error_cleanup_dev;
|
|
- }
|
|
-
|
|
- /* Objects are coherent, unless 'no shareability' flag set. */
|
|
- if (!(obj_desc->flags & FSL_MC_OBJ_FLAG_NO_MEM_SHAREABILITY))
|
|
- arch_setup_dma_ops(&mc_dev->dev, 0, 0, NULL, true);
|
|
-
|
|
- /*
|
|
- * The device-specific probe callback will get invoked by device_add()
|
|
- */
|
|
- error = device_add(&mc_dev->dev);
|
|
- if (error < 0) {
|
|
- dev_err(parent_dev,
|
|
- "device_add() failed for device %s: %d\n",
|
|
- dev_name(&mc_dev->dev), error);
|
|
- goto error_cleanup_dev;
|
|
- }
|
|
-
|
|
- dev_dbg(parent_dev, "added %s\n", dev_name(&mc_dev->dev));
|
|
-
|
|
- *new_mc_dev = mc_dev;
|
|
- return 0;
|
|
-
|
|
-error_cleanup_dev:
|
|
- kfree(mc_dev->regions);
|
|
- kfree(mc_bus);
|
|
- kfree(mc_dev);
|
|
-
|
|
- return error;
|
|
-}
|
|
-EXPORT_SYMBOL_GPL(fsl_mc_device_add);
|
|
-
|
|
-/**
|
|
- * fsl_mc_device_remove - Remove an fsl-mc device from being visible to
|
|
- * Linux
|
|
- *
|
|
- * @mc_dev: Pointer to an fsl-mc device
|
|
- */
|
|
-void fsl_mc_device_remove(struct fsl_mc_device *mc_dev)
|
|
-{
|
|
- /*
|
|
- * The device-specific remove callback will get invoked by device_del()
|
|
- */
|
|
- device_del(&mc_dev->dev);
|
|
- put_device(&mc_dev->dev);
|
|
-}
|
|
-EXPORT_SYMBOL_GPL(fsl_mc_device_remove);
|
|
-
|
|
-static int parse_mc_ranges(struct device *dev,
|
|
- int *paddr_cells,
|
|
- int *mc_addr_cells,
|
|
- int *mc_size_cells,
|
|
- const __be32 **ranges_start)
|
|
-{
|
|
- const __be32 *prop;
|
|
- int range_tuple_cell_count;
|
|
- int ranges_len;
|
|
- int tuple_len;
|
|
- struct device_node *mc_node = dev->of_node;
|
|
-
|
|
- *ranges_start = of_get_property(mc_node, "ranges", &ranges_len);
|
|
- if (!(*ranges_start) || !ranges_len) {
|
|
- dev_warn(dev,
|
|
- "missing or empty ranges property for device tree node '%s'\n",
|
|
- mc_node->name);
|
|
- return 0;
|
|
- }
|
|
-
|
|
- *paddr_cells = of_n_addr_cells(mc_node);
|
|
-
|
|
- prop = of_get_property(mc_node, "#address-cells", NULL);
|
|
- if (prop)
|
|
- *mc_addr_cells = be32_to_cpup(prop);
|
|
- else
|
|
- *mc_addr_cells = *paddr_cells;
|
|
-
|
|
- prop = of_get_property(mc_node, "#size-cells", NULL);
|
|
- if (prop)
|
|
- *mc_size_cells = be32_to_cpup(prop);
|
|
- else
|
|
- *mc_size_cells = of_n_size_cells(mc_node);
|
|
-
|
|
- range_tuple_cell_count = *paddr_cells + *mc_addr_cells +
|
|
- *mc_size_cells;
|
|
-
|
|
- tuple_len = range_tuple_cell_count * sizeof(__be32);
|
|
- if (ranges_len % tuple_len != 0) {
|
|
- dev_err(dev, "malformed ranges property '%s'\n", mc_node->name);
|
|
- return -EINVAL;
|
|
- }
|
|
-
|
|
- return ranges_len / tuple_len;
|
|
-}
|
|
-
|
|
-static int get_mc_addr_translation_ranges(struct device *dev,
|
|
- struct fsl_mc_addr_translation_range
|
|
- **ranges,
|
|
- u8 *num_ranges)
|
|
-{
|
|
- int ret;
|
|
- int paddr_cells;
|
|
- int mc_addr_cells;
|
|
- int mc_size_cells;
|
|
- int i;
|
|
- const __be32 *ranges_start;
|
|
- const __be32 *cell;
|
|
-
|
|
- ret = parse_mc_ranges(dev,
|
|
- &paddr_cells,
|
|
- &mc_addr_cells,
|
|
- &mc_size_cells,
|
|
- &ranges_start);
|
|
- if (ret < 0)
|
|
- return ret;
|
|
-
|
|
- *num_ranges = ret;
|
|
- if (!ret) {
|
|
- /*
|
|
- * Missing or empty ranges property ("ranges;") for the
|
|
- * 'fsl,qoriq-mc' node. In this case, identity mapping
|
|
- * will be used.
|
|
- */
|
|
- *ranges = NULL;
|
|
- return 0;
|
|
- }
|
|
-
|
|
- *ranges = devm_kcalloc(dev, *num_ranges,
|
|
- sizeof(struct fsl_mc_addr_translation_range),
|
|
- GFP_KERNEL);
|
|
- if (!(*ranges))
|
|
- return -ENOMEM;
|
|
-
|
|
- cell = ranges_start;
|
|
- for (i = 0; i < *num_ranges; ++i) {
|
|
- struct fsl_mc_addr_translation_range *range = &(*ranges)[i];
|
|
-
|
|
- range->mc_region_type = of_read_number(cell, 1);
|
|
- range->start_mc_offset = of_read_number(cell + 1,
|
|
- mc_addr_cells - 1);
|
|
- cell += mc_addr_cells;
|
|
- range->start_phys_addr = of_read_number(cell, paddr_cells);
|
|
- cell += paddr_cells;
|
|
- range->end_mc_offset = range->start_mc_offset +
|
|
- of_read_number(cell, mc_size_cells);
|
|
-
|
|
- cell += mc_size_cells;
|
|
- }
|
|
-
|
|
- return 0;
|
|
-}
|
|
-
|
|
-/**
|
|
- * fsl_mc_bus_probe - callback invoked when the root MC bus is being
|
|
- * added
|
|
- */
|
|
-static int fsl_mc_bus_probe(struct platform_device *pdev)
|
|
-{
|
|
- struct fsl_mc_obj_desc obj_desc;
|
|
- int error;
|
|
- struct fsl_mc *mc;
|
|
- struct fsl_mc_device *mc_bus_dev = NULL;
|
|
- struct fsl_mc_io *mc_io = NULL;
|
|
- int container_id;
|
|
- phys_addr_t mc_portal_phys_addr;
|
|
- u32 mc_portal_size;
|
|
- struct mc_version mc_version;
|
|
- struct resource res;
|
|
-
|
|
- mc = devm_kzalloc(&pdev->dev, sizeof(*mc), GFP_KERNEL);
|
|
- if (!mc)
|
|
- return -ENOMEM;
|
|
-
|
|
- platform_set_drvdata(pdev, mc);
|
|
-
|
|
- /*
|
|
- * Get physical address of MC portal for the root DPRC:
|
|
- */
|
|
- error = of_address_to_resource(pdev->dev.of_node, 0, &res);
|
|
- if (error < 0) {
|
|
- dev_err(&pdev->dev,
|
|
- "of_address_to_resource() failed for %pOF\n",
|
|
- pdev->dev.of_node);
|
|
- return error;
|
|
- }
|
|
-
|
|
- mc_portal_phys_addr = res.start;
|
|
- mc_portal_size = resource_size(&res);
|
|
- error = fsl_create_mc_io(&pdev->dev, mc_portal_phys_addr,
|
|
- mc_portal_size, NULL,
|
|
- FSL_MC_IO_ATOMIC_CONTEXT_PORTAL, &mc_io);
|
|
- if (error < 0)
|
|
- return error;
|
|
-
|
|
- error = mc_get_version(mc_io, 0, &mc_version);
|
|
- if (error != 0) {
|
|
- dev_err(&pdev->dev,
|
|
- "mc_get_version() failed with error %d\n", error);
|
|
- goto error_cleanup_mc_io;
|
|
- }
|
|
-
|
|
- dev_info(&pdev->dev, "MC firmware version: %u.%u.%u\n",
|
|
- mc_version.major, mc_version.minor, mc_version.revision);
|
|
-
|
|
- error = get_mc_addr_translation_ranges(&pdev->dev,
|
|
- &mc->translation_ranges,
|
|
- &mc->num_translation_ranges);
|
|
- if (error < 0)
|
|
- goto error_cleanup_mc_io;
|
|
-
|
|
- error = dprc_get_container_id(mc_io, 0, &container_id);
|
|
- if (error < 0) {
|
|
- dev_err(&pdev->dev,
|
|
- "dprc_get_container_id() failed: %d\n", error);
|
|
- goto error_cleanup_mc_io;
|
|
- }
|
|
-
|
|
- memset(&obj_desc, 0, sizeof(struct fsl_mc_obj_desc));
|
|
- error = dprc_get_api_version(mc_io, 0,
|
|
- &obj_desc.ver_major,
|
|
- &obj_desc.ver_minor);
|
|
- if (error < 0)
|
|
- goto error_cleanup_mc_io;
|
|
-
|
|
- obj_desc.vendor = FSL_MC_VENDOR_FREESCALE;
|
|
- strcpy(obj_desc.type, "dprc");
|
|
- obj_desc.id = container_id;
|
|
- obj_desc.irq_count = 1;
|
|
- obj_desc.region_count = 0;
|
|
-
|
|
- error = fsl_mc_device_add(&obj_desc, mc_io, &pdev->dev, &mc_bus_dev);
|
|
- if (error < 0)
|
|
- goto error_cleanup_mc_io;
|
|
-
|
|
- mc->root_mc_bus_dev = mc_bus_dev;
|
|
- return 0;
|
|
-
|
|
-error_cleanup_mc_io:
|
|
- fsl_destroy_mc_io(mc_io);
|
|
- return error;
|
|
-}
|
|
-
|
|
-/**
|
|
- * fsl_mc_bus_remove - callback invoked when the root MC bus is being
|
|
- * removed
|
|
- */
|
|
-static int fsl_mc_bus_remove(struct platform_device *pdev)
|
|
-{
|
|
- struct fsl_mc *mc = platform_get_drvdata(pdev);
|
|
-
|
|
- if (WARN_ON(!fsl_mc_is_root_dprc(&mc->root_mc_bus_dev->dev)))
|
|
- return -EINVAL;
|
|
-
|
|
- fsl_mc_device_remove(mc->root_mc_bus_dev);
|
|
-
|
|
- fsl_destroy_mc_io(mc->root_mc_bus_dev->mc_io);
|
|
- mc->root_mc_bus_dev->mc_io = NULL;
|
|
-
|
|
- return 0;
|
|
-}
|
|
-
|
|
-static const struct of_device_id fsl_mc_bus_match_table[] = {
|
|
- {.compatible = "fsl,qoriq-mc",},
|
|
- {},
|
|
-};
|
|
-
|
|
-MODULE_DEVICE_TABLE(of, fsl_mc_bus_match_table);
|
|
-
|
|
-static struct platform_driver fsl_mc_bus_driver = {
|
|
- .driver = {
|
|
- .name = "fsl_mc_bus",
|
|
- .pm = NULL,
|
|
- .of_match_table = fsl_mc_bus_match_table,
|
|
- },
|
|
- .probe = fsl_mc_bus_probe,
|
|
- .remove = fsl_mc_bus_remove,
|
|
-};
|
|
-
|
|
-static int __init fsl_mc_bus_driver_init(void)
|
|
-{
|
|
- int error;
|
|
-
|
|
- error = bus_register(&fsl_mc_bus_type);
|
|
- if (error < 0) {
|
|
- pr_err("bus type registration failed: %d\n", error);
|
|
- goto error_cleanup_cache;
|
|
- }
|
|
-
|
|
- error = platform_driver_register(&fsl_mc_bus_driver);
|
|
- if (error < 0) {
|
|
- pr_err("platform_driver_register() failed: %d\n", error);
|
|
- goto error_cleanup_bus;
|
|
- }
|
|
-
|
|
- error = dprc_driver_init();
|
|
- if (error < 0)
|
|
- goto error_cleanup_driver;
|
|
-
|
|
- error = fsl_mc_allocator_driver_init();
|
|
- if (error < 0)
|
|
- goto error_cleanup_dprc_driver;
|
|
-
|
|
- error = its_fsl_mc_msi_init();
|
|
- if (error < 0)
|
|
- goto error_cleanup_mc_allocator;
|
|
-
|
|
- return 0;
|
|
-
|
|
-error_cleanup_mc_allocator:
|
|
- fsl_mc_allocator_driver_exit();
|
|
-
|
|
-error_cleanup_dprc_driver:
|
|
- dprc_driver_exit();
|
|
-
|
|
-error_cleanup_driver:
|
|
- platform_driver_unregister(&fsl_mc_bus_driver);
|
|
-
|
|
-error_cleanup_bus:
|
|
- bus_unregister(&fsl_mc_bus_type);
|
|
-
|
|
-error_cleanup_cache:
|
|
- return error;
|
|
-}
|
|
-postcore_initcall(fsl_mc_bus_driver_init);
|
|
--- /dev/null
|
|
+++ b/drivers/bus/fsl-mc/fsl-mc-bus.c
|
|
@@ -0,0 +1,1139 @@
|
|
+// SPDX-License-Identifier: GPL-2.0
|
|
+/*
|
|
+ * Freescale Management Complex (MC) bus driver
|
|
+ *
|
|
+ * Copyright (C) 2014-2016 Freescale Semiconductor, Inc.
|
|
+ * Author: German Rivera <German.Rivera@freescale.com>
|
|
+ *
|
|
+ */
|
|
+
|
|
+#define pr_fmt(fmt) "fsl-mc: " fmt
|
|
+
|
|
+#include <linux/module.h>
|
|
+#include <linux/of_device.h>
|
|
+#include <linux/of_address.h>
|
|
+#include <linux/ioport.h>
|
|
+#include <linux/slab.h>
|
|
+#include <linux/limits.h>
|
|
+#include <linux/bitops.h>
|
|
+#include <linux/msi.h>
|
|
+#include <linux/dma-mapping.h>
|
|
+
|
|
+#include "fsl-mc-private.h"
|
|
+
|
|
+/**
|
|
+ * Default DMA mask for devices on a fsl-mc bus
|
|
+ */
|
|
+#define FSL_MC_DEFAULT_DMA_MASK (~0ULL)
|
|
+
|
|
+/**
|
|
+ * struct fsl_mc - Private data of a "fsl,qoriq-mc" platform device
|
|
+ * @root_mc_bus_dev: fsl-mc device representing the root DPRC
|
|
+ * @num_translation_ranges: number of entries in addr_translation_ranges
|
|
+ * @translation_ranges: array of bus to system address translation ranges
|
|
+ */
|
|
+struct fsl_mc {
|
|
+ struct fsl_mc_device *root_mc_bus_dev;
|
|
+ u8 num_translation_ranges;
|
|
+ struct fsl_mc_addr_translation_range *translation_ranges;
|
|
+};
|
|
+
|
|
+/**
|
|
+ * struct fsl_mc_addr_translation_range - bus to system address translation
|
|
+ * range
|
|
+ * @mc_region_type: Type of MC region for the range being translated
|
|
+ * @start_mc_offset: Start MC offset of the range being translated
|
|
+ * @end_mc_offset: MC offset of the first byte after the range (last MC
|
|
+ * offset of the range is end_mc_offset - 1)
|
|
+ * @start_phys_addr: system physical address corresponding to start_mc_addr
|
|
+ */
|
|
+struct fsl_mc_addr_translation_range {
|
|
+ enum dprc_region_type mc_region_type;
|
|
+ u64 start_mc_offset;
|
|
+ u64 end_mc_offset;
|
|
+ phys_addr_t start_phys_addr;
|
|
+};
|
|
+
|
|
+/**
|
|
+ * struct mc_version
|
|
+ * @major: Major version number: incremented on API compatibility changes
|
|
+ * @minor: Minor version number: incremented on API additions (that are
|
|
+ * backward compatible); reset when major version is incremented
|
|
+ * @revision: Internal revision number: incremented on implementation changes
|
|
+ * and/or bug fixes that have no impact on API
|
|
+ */
|
|
+struct mc_version {
|
|
+ u32 major;
|
|
+ u32 minor;
|
|
+ u32 revision;
|
|
+};
|
|
+
|
|
+/**
|
|
+ * fsl_mc_bus_match - device to driver matching callback
|
|
+ * @dev: the fsl-mc device to match against
|
|
+ * @drv: the device driver to search for matching fsl-mc object type
|
|
+ * structures
|
|
+ *
|
|
+ * Returns 1 on success, 0 otherwise.
|
|
+ */
|
|
+static int fsl_mc_bus_match(struct device *dev, struct device_driver *drv)
|
|
+{
|
|
+ const struct fsl_mc_device_id *id;
|
|
+ struct fsl_mc_device *mc_dev = to_fsl_mc_device(dev);
|
|
+ struct fsl_mc_driver *mc_drv = to_fsl_mc_driver(drv);
|
|
+ bool found = false;
|
|
+
|
|
+ /* When driver_override is set, only bind to the matching driver */
|
|
+ if (mc_dev->driver_override) {
|
|
+ found = !strcmp(mc_dev->driver_override, mc_drv->driver.name);
|
|
+ goto out;
|
|
+ }
|
|
+
|
|
+ if (!mc_drv->match_id_table)
|
|
+ goto out;
|
|
+
|
|
+ /*
|
|
+ * If the object is not 'plugged' don't match.
|
|
+ * Only exception is the root DPRC, which is a special case.
|
|
+ */
|
|
+ if ((mc_dev->obj_desc.state & FSL_MC_OBJ_STATE_PLUGGED) == 0 &&
|
|
+ !fsl_mc_is_root_dprc(&mc_dev->dev))
|
|
+ goto out;
|
|
+
|
|
+ /*
|
|
+ * Traverse the match_id table of the given driver, trying to find
|
|
+ * a matching for the given device.
|
|
+ */
|
|
+ for (id = mc_drv->match_id_table; id->vendor != 0x0; id++) {
|
|
+ if (id->vendor == mc_dev->obj_desc.vendor &&
|
|
+ strcmp(id->obj_type, mc_dev->obj_desc.type) == 0) {
|
|
+ found = true;
|
|
+
|
|
+ break;
|
|
+ }
|
|
+ }
|
|
+
|
|
+out:
|
|
+ dev_dbg(dev, "%smatched\n", found ? "" : "not ");
|
|
+ return found;
|
|
+}
|
|
+
|
|
+/**
|
|
+ * fsl_mc_bus_uevent - callback invoked when a device is added
|
|
+ */
|
|
+static int fsl_mc_bus_uevent(struct device *dev, struct kobj_uevent_env *env)
|
|
+{
|
|
+ struct fsl_mc_device *mc_dev = to_fsl_mc_device(dev);
|
|
+
|
|
+ if (add_uevent_var(env, "MODALIAS=fsl-mc:v%08Xd%s",
|
|
+ mc_dev->obj_desc.vendor,
|
|
+ mc_dev->obj_desc.type))
|
|
+ return -ENOMEM;
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+static ssize_t modalias_show(struct device *dev, struct device_attribute *attr,
|
|
+ char *buf)
|
|
+{
|
|
+ struct fsl_mc_device *mc_dev = to_fsl_mc_device(dev);
|
|
+
|
|
+ return sprintf(buf, "fsl-mc:v%08Xd%s\n", mc_dev->obj_desc.vendor,
|
|
+ mc_dev->obj_desc.type);
|
|
+}
|
|
+static DEVICE_ATTR_RO(modalias);
|
|
+
|
|
+static ssize_t rescan_store(struct device *dev,
|
|
+ struct device_attribute *attr,
|
|
+ const char *buf, size_t count)
|
|
+{
|
|
+ struct fsl_mc_device *root_mc_dev;
|
|
+ struct fsl_mc_bus *root_mc_bus;
|
|
+ unsigned long val;
|
|
+
|
|
+ if (!fsl_mc_is_root_dprc(dev))
|
|
+ return -EINVAL;
|
|
+
|
|
+ root_mc_dev = to_fsl_mc_device(dev);
|
|
+ root_mc_bus = to_fsl_mc_bus(root_mc_dev);
|
|
+
|
|
+ if (kstrtoul(buf, 0, &val) < 0)
|
|
+ return -EINVAL;
|
|
+
|
|
+ if (val) {
|
|
+ mutex_lock(&root_mc_bus->scan_mutex);
|
|
+ dprc_scan_objects(root_mc_dev, NULL, NULL);
|
|
+ mutex_unlock(&root_mc_bus->scan_mutex);
|
|
+ }
|
|
+
|
|
+ return count;
|
|
+}
|
|
+static DEVICE_ATTR_WO(rescan);
|
|
+
|
|
+static ssize_t driver_override_store(struct device *dev,
|
|
+ struct device_attribute *attr,
|
|
+ const char *buf, size_t count)
|
|
+{
|
|
+ struct fsl_mc_device *mc_dev = to_fsl_mc_device(dev);
|
|
+ const char *driver_override, *old = mc_dev->driver_override;
|
|
+ char *cp;
|
|
+
|
|
+ if (WARN_ON(dev->bus != &fsl_mc_bus_type))
|
|
+ return -EINVAL;
|
|
+
|
|
+ if (count >= (PAGE_SIZE - 1))
|
|
+ return -EINVAL;
|
|
+
|
|
+ driver_override = kstrndup(buf, count, GFP_KERNEL);
|
|
+ if (!driver_override)
|
|
+ return -ENOMEM;
|
|
+
|
|
+ cp = strchr(driver_override, '\n');
|
|
+ if (cp)
|
|
+ *cp = '\0';
|
|
+
|
|
+ if (strlen(driver_override)) {
|
|
+ mc_dev->driver_override = driver_override;
|
|
+ } else {
|
|
+ kfree(driver_override);
|
|
+ mc_dev->driver_override = NULL;
|
|
+ }
|
|
+
|
|
+ kfree(old);
|
|
+
|
|
+ return count;
|
|
+}
|
|
+
|
|
+static ssize_t driver_override_show(struct device *dev,
|
|
+ struct device_attribute *attr, char *buf)
|
|
+{
|
|
+ struct fsl_mc_device *mc_dev = to_fsl_mc_device(dev);
|
|
+
|
|
+ return snprintf(buf, PAGE_SIZE, "%s\n", mc_dev->driver_override);
|
|
+}
|
|
+static DEVICE_ATTR_RW(driver_override);
|
|
+
|
|
+static struct attribute *fsl_mc_dev_attrs[] = {
|
|
+ &dev_attr_modalias.attr,
|
|
+ &dev_attr_rescan.attr,
|
|
+ &dev_attr_driver_override.attr,
|
|
+ NULL,
|
|
+};
|
|
+
|
|
+ATTRIBUTE_GROUPS(fsl_mc_dev);
|
|
+
|
|
+static int scan_fsl_mc_bus(struct device *dev, void *data)
|
|
+{
|
|
+ struct fsl_mc_device *root_mc_dev;
|
|
+ struct fsl_mc_bus *root_mc_bus;
|
|
+
|
|
+ if (!fsl_mc_is_root_dprc(dev))
|
|
+ goto exit;
|
|
+
|
|
+ root_mc_dev = to_fsl_mc_device(dev);
|
|
+ root_mc_bus = to_fsl_mc_bus(root_mc_dev);
|
|
+ mutex_lock(&root_mc_bus->scan_mutex);
|
|
+ dprc_scan_objects(root_mc_dev, NULL, NULL);
|
|
+ mutex_unlock(&root_mc_bus->scan_mutex);
|
|
+
|
|
+exit:
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+static ssize_t bus_rescan_store(struct bus_type *bus,
|
|
+ const char *buf, size_t count)
|
|
+{
|
|
+ unsigned long val;
|
|
+
|
|
+ if (kstrtoul(buf, 0, &val) < 0)
|
|
+ return -EINVAL;
|
|
+
|
|
+ if (val)
|
|
+ bus_for_each_dev(bus, NULL, NULL, scan_fsl_mc_bus);
|
|
+
|
|
+ return count;
|
|
+}
|
|
+static BUS_ATTR(rescan, 0220, NULL, bus_rescan_store);
|
|
+
|
|
+static struct attribute *fsl_mc_bus_attrs[] = {
|
|
+ &bus_attr_rescan.attr,
|
|
+ NULL,
|
|
+};
|
|
+
|
|
+static const struct attribute_group fsl_mc_bus_group = {
|
|
+ .attrs = fsl_mc_bus_attrs,
|
|
+};
|
|
+
|
|
+static const struct attribute_group *fsl_mc_bus_groups[] = {
|
|
+ &fsl_mc_bus_group,
|
|
+ NULL,
|
|
+};
|
|
+
|
|
+struct bus_type fsl_mc_bus_type = {
|
|
+ .name = "fsl-mc",
|
|
+ .match = fsl_mc_bus_match,
|
|
+ .uevent = fsl_mc_bus_uevent,
|
|
+ .dev_groups = fsl_mc_dev_groups,
|
|
+ .bus_groups = fsl_mc_bus_groups,
|
|
+};
|
|
+EXPORT_SYMBOL_GPL(fsl_mc_bus_type);
|
|
+
|
|
+struct device_type fsl_mc_bus_dprc_type = {
|
|
+ .name = "fsl_mc_bus_dprc"
|
|
+};
|
|
+
|
|
+struct device_type fsl_mc_bus_dpni_type = {
|
|
+ .name = "fsl_mc_bus_dpni"
|
|
+};
|
|
+
|
|
+struct device_type fsl_mc_bus_dpio_type = {
|
|
+ .name = "fsl_mc_bus_dpio"
|
|
+};
|
|
+
|
|
+struct device_type fsl_mc_bus_dpsw_type = {
|
|
+ .name = "fsl_mc_bus_dpsw"
|
|
+};
|
|
+
|
|
+struct device_type fsl_mc_bus_dpdmux_type = {
|
|
+ .name = "fsl_mc_bus_dpdmux"
|
|
+};
|
|
+
|
|
+struct device_type fsl_mc_bus_dpbp_type = {
|
|
+ .name = "fsl_mc_bus_dpbp"
|
|
+};
|
|
+
|
|
+struct device_type fsl_mc_bus_dpcon_type = {
|
|
+ .name = "fsl_mc_bus_dpcon"
|
|
+};
|
|
+
|
|
+struct device_type fsl_mc_bus_dpmcp_type = {
|
|
+ .name = "fsl_mc_bus_dpmcp"
|
|
+};
|
|
+
|
|
+struct device_type fsl_mc_bus_dpmac_type = {
|
|
+ .name = "fsl_mc_bus_dpmac"
|
|
+};
|
|
+
|
|
+struct device_type fsl_mc_bus_dprtc_type = {
|
|
+ .name = "fsl_mc_bus_dprtc"
|
|
+};
|
|
+
|
|
+struct device_type fsl_mc_bus_dpseci_type = {
|
|
+ .name = "fsl_mc_bus_dpseci"
|
|
+};
|
|
+
|
|
+struct device_type fsl_mc_bus_dpdcei_type = {
|
|
+ .name = "fsl_mc_bus_dpdcei"
|
|
+};
|
|
+
|
|
+struct device_type fsl_mc_bus_dpaiop_type = {
|
|
+ .name = "fsl_mc_bus_dpaiop"
|
|
+};
|
|
+
|
|
+struct device_type fsl_mc_bus_dpci_type = {
|
|
+ .name = "fsl_mc_bus_dpci"
|
|
+};
|
|
+
|
|
+struct device_type fsl_mc_bus_dpdmai_type = {
|
|
+ .name = "fsl_mc_bus_dpdmai"
|
|
+};
|
|
+
|
|
+static struct device_type *fsl_mc_get_device_type(const char *type)
|
|
+{
|
|
+ static const struct {
|
|
+ struct device_type *dev_type;
|
|
+ const char *type;
|
|
+ } dev_types[] = {
|
|
+ { &fsl_mc_bus_dprc_type, "dprc" },
|
|
+ { &fsl_mc_bus_dpni_type, "dpni" },
|
|
+ { &fsl_mc_bus_dpio_type, "dpio" },
|
|
+ { &fsl_mc_bus_dpsw_type, "dpsw" },
|
|
+ { &fsl_mc_bus_dpdmux_type, "dpdmux" },
|
|
+ { &fsl_mc_bus_dpbp_type, "dpbp" },
|
|
+ { &fsl_mc_bus_dpcon_type, "dpcon" },
|
|
+ { &fsl_mc_bus_dpmcp_type, "dpmcp" },
|
|
+ { &fsl_mc_bus_dpmac_type, "dpmac" },
|
|
+ { &fsl_mc_bus_dprtc_type, "dprtc" },
|
|
+ { &fsl_mc_bus_dpseci_type, "dpseci" },
|
|
+ { &fsl_mc_bus_dpdcei_type, "dpdcei" },
|
|
+ { &fsl_mc_bus_dpaiop_type, "dpaiop" },
|
|
+ { &fsl_mc_bus_dpci_type, "dpci" },
|
|
+ { &fsl_mc_bus_dpdmai_type, "dpdmai" },
|
|
+ { NULL, NULL }
|
|
+ };
|
|
+ int i;
|
|
+
|
|
+ for (i = 0; dev_types[i].dev_type; i++)
|
|
+ if (!strcmp(dev_types[i].type, type))
|
|
+ return dev_types[i].dev_type;
|
|
+
|
|
+ return NULL;
|
|
+}
|
|
+
|
|
+static int fsl_mc_driver_probe(struct device *dev)
|
|
+{
|
|
+ struct fsl_mc_driver *mc_drv;
|
|
+ struct fsl_mc_device *mc_dev = to_fsl_mc_device(dev);
|
|
+ int error;
|
|
+
|
|
+ mc_drv = to_fsl_mc_driver(dev->driver);
|
|
+
|
|
+ error = mc_drv->probe(mc_dev);
|
|
+ if (error < 0) {
|
|
+ if (error != -EPROBE_DEFER)
|
|
+ dev_err(dev, "%s failed: %d\n", __func__, error);
|
|
+ return error;
|
|
+ }
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+static int fsl_mc_driver_remove(struct device *dev)
|
|
+{
|
|
+ struct fsl_mc_driver *mc_drv = to_fsl_mc_driver(dev->driver);
|
|
+ struct fsl_mc_device *mc_dev = to_fsl_mc_device(dev);
|
|
+ int error;
|
|
+
|
|
+ error = mc_drv->remove(mc_dev);
|
|
+ if (error < 0) {
|
|
+ dev_err(dev, "%s failed: %d\n", __func__, error);
|
|
+ return error;
|
|
+ }
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+static void fsl_mc_driver_shutdown(struct device *dev)
|
|
+{
|
|
+ struct fsl_mc_driver *mc_drv = to_fsl_mc_driver(dev->driver);
|
|
+ struct fsl_mc_device *mc_dev = to_fsl_mc_device(dev);
|
|
+
|
|
+ mc_drv->shutdown(mc_dev);
|
|
+}
|
|
+
|
|
+/**
|
|
+ * __fsl_mc_driver_register - registers a child device driver with the
|
|
+ * MC bus
|
|
+ *
|
|
+ * This function is implicitly invoked from the registration function of
|
|
+ * fsl_mc device drivers, which is generated by the
|
|
+ * module_fsl_mc_driver() macro.
|
|
+ */
|
|
+int __fsl_mc_driver_register(struct fsl_mc_driver *mc_driver,
|
|
+ struct module *owner)
|
|
+{
|
|
+ int error;
|
|
+
|
|
+ mc_driver->driver.owner = owner;
|
|
+ mc_driver->driver.bus = &fsl_mc_bus_type;
|
|
+
|
|
+ if (mc_driver->probe)
|
|
+ mc_driver->driver.probe = fsl_mc_driver_probe;
|
|
+
|
|
+ if (mc_driver->remove)
|
|
+ mc_driver->driver.remove = fsl_mc_driver_remove;
|
|
+
|
|
+ if (mc_driver->shutdown)
|
|
+ mc_driver->driver.shutdown = fsl_mc_driver_shutdown;
|
|
+
|
|
+ error = driver_register(&mc_driver->driver);
|
|
+ if (error < 0) {
|
|
+ pr_err("driver_register() failed for %s: %d\n",
|
|
+ mc_driver->driver.name, error);
|
|
+ return error;
|
|
+ }
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+EXPORT_SYMBOL_GPL(__fsl_mc_driver_register);
|
|
+
|
|
+/**
|
|
+ * fsl_mc_driver_unregister - unregisters a device driver from the
|
|
+ * MC bus
|
|
+ */
|
|
+void fsl_mc_driver_unregister(struct fsl_mc_driver *mc_driver)
|
|
+{
|
|
+ driver_unregister(&mc_driver->driver);
|
|
+}
|
|
+EXPORT_SYMBOL_GPL(fsl_mc_driver_unregister);
|
|
+
|
|
+/**
|
|
+ * mc_get_version() - Retrieves the Management Complex firmware
|
|
+ * version information
|
|
+ * @mc_io: Pointer to opaque I/O object
|
|
+ * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
|
|
+ * @mc_ver_info: Returned version information structure
|
|
+ *
|
|
+ * Return: '0' on Success; Error code otherwise.
|
|
+ */
|
|
+static int mc_get_version(struct fsl_mc_io *mc_io,
|
|
+ u32 cmd_flags,
|
|
+ struct mc_version *mc_ver_info)
|
|
+{
|
|
+ struct fsl_mc_command cmd = { 0 };
|
|
+ struct dpmng_rsp_get_version *rsp_params;
|
|
+ int err;
|
|
+
|
|
+ /* prepare command */
|
|
+ cmd.header = mc_encode_cmd_header(DPMNG_CMDID_GET_VERSION,
|
|
+ cmd_flags,
|
|
+ 0);
|
|
+
|
|
+ /* send command to mc*/
|
|
+ err = mc_send_command(mc_io, &cmd);
|
|
+ if (err)
|
|
+ return err;
|
|
+
|
|
+ /* retrieve response parameters */
|
|
+ rsp_params = (struct dpmng_rsp_get_version *)cmd.params;
|
|
+ mc_ver_info->revision = le32_to_cpu(rsp_params->revision);
|
|
+ mc_ver_info->major = le32_to_cpu(rsp_params->version_major);
|
|
+ mc_ver_info->minor = le32_to_cpu(rsp_params->version_minor);
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+/**
|
|
+ * fsl_mc_get_root_dprc - function to traverse to the root dprc
|
|
+ */
|
|
+void fsl_mc_get_root_dprc(struct device *dev,
|
|
+ struct device **root_dprc_dev)
|
|
+{
|
|
+ if (!dev) {
|
|
+ *root_dprc_dev = NULL;
|
|
+ } else if (!dev_is_fsl_mc(dev)) {
|
|
+ *root_dprc_dev = NULL;
|
|
+ } else {
|
|
+ *root_dprc_dev = dev;
|
|
+ while (dev_is_fsl_mc((*root_dprc_dev)->parent))
|
|
+ *root_dprc_dev = (*root_dprc_dev)->parent;
|
|
+ }
|
|
+}
|
|
+EXPORT_SYMBOL_GPL(fsl_mc_get_root_dprc);
|
|
+
|
|
+static int get_dprc_attr(struct fsl_mc_io *mc_io,
|
|
+ int container_id, struct dprc_attributes *attr)
|
|
+{
|
|
+ u16 dprc_handle;
|
|
+ int error;
|
|
+
|
|
+ error = dprc_open(mc_io, 0, container_id, &dprc_handle);
|
|
+ if (error < 0) {
|
|
+ dev_err(mc_io->dev, "dprc_open() failed: %d\n", error);
|
|
+ return error;
|
|
+ }
|
|
+
|
|
+ memset(attr, 0, sizeof(struct dprc_attributes));
|
|
+ error = dprc_get_attributes(mc_io, 0, dprc_handle, attr);
|
|
+ if (error < 0) {
|
|
+ dev_err(mc_io->dev, "dprc_get_attributes() failed: %d\n",
|
|
+ error);
|
|
+ goto common_cleanup;
|
|
+ }
|
|
+
|
|
+ error = 0;
|
|
+
|
|
+common_cleanup:
|
|
+ (void)dprc_close(mc_io, 0, dprc_handle);
|
|
+ return error;
|
|
+}
|
|
+
|
|
+static int get_dprc_icid(struct fsl_mc_io *mc_io,
|
|
+ int container_id, u32 *icid)
|
|
+{
|
|
+ struct dprc_attributes attr;
|
|
+ int error;
|
|
+
|
|
+ error = get_dprc_attr(mc_io, container_id, &attr);
|
|
+ if (error == 0)
|
|
+ *icid = attr.icid;
|
|
+
|
|
+ return error;
|
|
+}
|
|
+
|
|
+static int translate_mc_addr(struct fsl_mc_device *mc_dev,
|
|
+ enum dprc_region_type mc_region_type,
|
|
+ u64 mc_offset, phys_addr_t *phys_addr)
|
|
+{
|
|
+ int i;
|
|
+ struct device *root_dprc_dev;
|
|
+ struct fsl_mc *mc;
|
|
+
|
|
+ fsl_mc_get_root_dprc(&mc_dev->dev, &root_dprc_dev);
|
|
+ mc = dev_get_drvdata(root_dprc_dev->parent);
|
|
+
|
|
+ if (mc->num_translation_ranges == 0) {
|
|
+ /*
|
|
+ * Do identity mapping:
|
|
+ */
|
|
+ *phys_addr = mc_offset;
|
|
+ return 0;
|
|
+ }
|
|
+
|
|
+ for (i = 0; i < mc->num_translation_ranges; i++) {
|
|
+ struct fsl_mc_addr_translation_range *range =
|
|
+ &mc->translation_ranges[i];
|
|
+
|
|
+ if (mc_region_type == range->mc_region_type &&
|
|
+ mc_offset >= range->start_mc_offset &&
|
|
+ mc_offset < range->end_mc_offset) {
|
|
+ *phys_addr = range->start_phys_addr +
|
|
+ (mc_offset - range->start_mc_offset);
|
|
+ return 0;
|
|
+ }
|
|
+ }
|
|
+
|
|
+ return -EFAULT;
|
|
+}
|
|
+
|
|
+static int fsl_mc_device_get_mmio_regions(struct fsl_mc_device *mc_dev,
|
|
+ struct fsl_mc_device *mc_bus_dev)
|
|
+{
|
|
+ int i;
|
|
+ int error;
|
|
+ struct resource *regions;
|
|
+ struct fsl_mc_obj_desc *obj_desc = &mc_dev->obj_desc;
|
|
+ struct device *parent_dev = mc_dev->dev.parent;
|
|
+ enum dprc_region_type mc_region_type;
|
|
+
|
|
+ if (is_fsl_mc_bus_dprc(mc_dev) ||
|
|
+ is_fsl_mc_bus_dpmcp(mc_dev)) {
|
|
+ mc_region_type = DPRC_REGION_TYPE_MC_PORTAL;
|
|
+ } else if (is_fsl_mc_bus_dpio(mc_dev)) {
|
|
+ mc_region_type = DPRC_REGION_TYPE_QBMAN_PORTAL;
|
|
+ } else {
|
|
+ /*
|
|
+ * This function should not have been called for this MC object
|
|
+ * type, as this object type is not supposed to have MMIO
|
|
+ * regions
|
|
+ */
|
|
+ return -EINVAL;
|
|
+ }
|
|
+
|
|
+ regions = kmalloc_array(obj_desc->region_count,
|
|
+ sizeof(regions[0]), GFP_KERNEL);
|
|
+ if (!regions)
|
|
+ return -ENOMEM;
|
|
+
|
|
+ for (i = 0; i < obj_desc->region_count; i++) {
|
|
+ struct dprc_region_desc region_desc;
|
|
+
|
|
+ error = dprc_get_obj_region(mc_bus_dev->mc_io,
|
|
+ 0,
|
|
+ mc_bus_dev->mc_handle,
|
|
+ obj_desc->type,
|
|
+ obj_desc->id, i, ®ion_desc);
|
|
+ if (error < 0) {
|
|
+ dev_err(parent_dev,
|
|
+ "dprc_get_obj_region() failed: %d\n", error);
|
|
+ goto error_cleanup_regions;
|
|
+ }
|
|
+
|
|
+ error = translate_mc_addr(mc_dev, mc_region_type,
|
|
+ region_desc.base_offset,
|
|
+ ®ions[i].start);
|
|
+ if (error < 0) {
|
|
+ dev_err(parent_dev,
|
|
+ "Invalid MC offset: %#x (for %s.%d\'s region %d)\n",
|
|
+ region_desc.base_offset,
|
|
+ obj_desc->type, obj_desc->id, i);
|
|
+ goto error_cleanup_regions;
|
|
+ }
|
|
+
|
|
+ regions[i].end = regions[i].start + region_desc.size - 1;
|
|
+ regions[i].name = "fsl-mc object MMIO region";
|
|
+ regions[i].flags = IORESOURCE_IO;
|
|
+ if (region_desc.flags & DPRC_REGION_CACHEABLE)
|
|
+ regions[i].flags |= IORESOURCE_CACHEABLE;
|
|
+ }
|
|
+
|
|
+ mc_dev->regions = regions;
|
|
+ return 0;
|
|
+
|
|
+error_cleanup_regions:
|
|
+ kfree(regions);
|
|
+ return error;
|
|
+}
|
|
+
|
|
+/**
|
|
+ * fsl_mc_is_root_dprc - function to check if a given device is a root dprc
|
|
+ */
|
|
+bool fsl_mc_is_root_dprc(struct device *dev)
|
|
+{
|
|
+ struct device *root_dprc_dev;
|
|
+
|
|
+ fsl_mc_get_root_dprc(dev, &root_dprc_dev);
|
|
+ if (!root_dprc_dev)
|
|
+ return false;
|
|
+ return dev == root_dprc_dev;
|
|
+}
|
|
+
|
|
+static void fsl_mc_device_release(struct device *dev)
|
|
+{
|
|
+ struct fsl_mc_device *mc_dev = to_fsl_mc_device(dev);
|
|
+
|
|
+ kfree(mc_dev->regions);
|
|
+
|
|
+ if (is_fsl_mc_bus_dprc(mc_dev))
|
|
+ kfree(to_fsl_mc_bus(mc_dev));
|
|
+ else
|
|
+ kfree(mc_dev);
|
|
+}
|
|
+
|
|
+/**
|
|
+ * Add a newly discovered fsl-mc device to be visible in Linux
|
|
+ */
|
|
+int fsl_mc_device_add(struct fsl_mc_obj_desc *obj_desc,
|
|
+ struct fsl_mc_io *mc_io,
|
|
+ struct device *parent_dev,
|
|
+ const char *driver_override,
|
|
+ struct fsl_mc_device **new_mc_dev)
|
|
+{
|
|
+ int error;
|
|
+ struct fsl_mc_device *mc_dev = NULL;
|
|
+ struct fsl_mc_bus *mc_bus = NULL;
|
|
+ struct fsl_mc_device *parent_mc_dev;
|
|
+
|
|
+ if (dev_is_fsl_mc(parent_dev))
|
|
+ parent_mc_dev = to_fsl_mc_device(parent_dev);
|
|
+ else
|
|
+ parent_mc_dev = NULL;
|
|
+
|
|
+ if (strcmp(obj_desc->type, "dprc") == 0) {
|
|
+ /*
|
|
+ * Allocate an MC bus device object:
|
|
+ */
|
|
+ mc_bus = kzalloc(sizeof(*mc_bus), GFP_KERNEL);
|
|
+ if (!mc_bus)
|
|
+ return -ENOMEM;
|
|
+
|
|
+ mc_dev = &mc_bus->mc_dev;
|
|
+ } else {
|
|
+ /*
|
|
+ * Allocate a regular fsl_mc_device object:
|
|
+ */
|
|
+ mc_dev = kzalloc(sizeof(*mc_dev), GFP_KERNEL);
|
|
+ if (!mc_dev)
|
|
+ return -ENOMEM;
|
|
+ }
|
|
+
|
|
+ mc_dev->obj_desc = *obj_desc;
|
|
+ mc_dev->mc_io = mc_io;
|
|
+
|
|
+ if (driver_override) {
|
|
+ /*
|
|
+ * We trust driver_override, so we don't need to use
|
|
+ * kstrndup() here
|
|
+ */
|
|
+ mc_dev->driver_override = kstrdup(driver_override, GFP_KERNEL);
|
|
+ if (!mc_dev->driver_override) {
|
|
+ error = -ENOMEM;
|
|
+ goto error_cleanup_dev;
|
|
+ }
|
|
+ }
|
|
+
|
|
+ device_initialize(&mc_dev->dev);
|
|
+ mc_dev->dev.parent = parent_dev;
|
|
+ mc_dev->dev.bus = &fsl_mc_bus_type;
|
|
+ mc_dev->dev.release = fsl_mc_device_release;
|
|
+ mc_dev->dev.type = fsl_mc_get_device_type(obj_desc->type);
|
|
+ if (!mc_dev->dev.type) {
|
|
+ error = -ENODEV;
|
|
+ dev_err(parent_dev, "unknown device type %s\n", obj_desc->type);
|
|
+ goto error_cleanup_dev;
|
|
+ }
|
|
+ dev_set_name(&mc_dev->dev, "%s.%d", obj_desc->type, obj_desc->id);
|
|
+
|
|
+ if (strcmp(obj_desc->type, "dprc") == 0) {
|
|
+ struct fsl_mc_io *mc_io2;
|
|
+
|
|
+ mc_dev->flags |= FSL_MC_IS_DPRC;
|
|
+
|
|
+ /*
|
|
+ * To get the DPRC's ICID, we need to open the DPRC
|
|
+ * in get_dprc_icid(). For child DPRCs, we do so using the
|
|
+ * parent DPRC's MC portal instead of the child DPRC's MC
|
|
+ * portal, in case the child DPRC is already opened with
|
|
+ * its own portal (e.g., the DPRC used by AIOP).
|
|
+ *
|
|
+ * NOTE: There cannot be more than one active open for a
|
|
+ * given MC object, using the same MC portal.
|
|
+ */
|
|
+ if (parent_mc_dev) {
|
|
+ /*
|
|
+ * device being added is a child DPRC device
|
|
+ */
|
|
+ mc_io2 = parent_mc_dev->mc_io;
|
|
+ } else {
|
|
+ /*
|
|
+ * device being added is the root DPRC device
|
|
+ */
|
|
+ if (!mc_io) {
|
|
+ error = -EINVAL;
|
|
+ goto error_cleanup_dev;
|
|
+ }
|
|
+
|
|
+ mc_io2 = mc_io;
|
|
+ }
|
|
+
|
|
+ error = get_dprc_icid(mc_io2, obj_desc->id, &mc_dev->icid);
|
|
+ if (error < 0)
|
|
+ goto error_cleanup_dev;
|
|
+ } else {
|
|
+ /*
|
|
+ * A non-DPRC object has to be a child of a DPRC, use the
|
|
+ * parent's ICID and interrupt domain.
|
|
+ */
|
|
+ mc_dev->icid = parent_mc_dev->icid;
|
|
+ mc_dev->dma_mask = FSL_MC_DEFAULT_DMA_MASK;
|
|
+ mc_dev->dev.dma_mask = &mc_dev->dma_mask;
|
|
+ mc_dev->dev.coherent_dma_mask = mc_dev->dma_mask;
|
|
+ dev_set_msi_domain(&mc_dev->dev,
|
|
+ dev_get_msi_domain(&parent_mc_dev->dev));
|
|
+ }
|
|
+
|
|
+ /*
|
|
+ * Get MMIO regions for the device from the MC:
|
|
+ *
|
|
+ * NOTE: the root DPRC is a special case as its MMIO region is
|
|
+ * obtained from the device tree
|
|
+ */
|
|
+ if (parent_mc_dev && obj_desc->region_count != 0) {
|
|
+ error = fsl_mc_device_get_mmio_regions(mc_dev,
|
|
+ parent_mc_dev);
|
|
+ if (error < 0)
|
|
+ goto error_cleanup_dev;
|
|
+ }
|
|
+
|
|
+ /*
|
|
+ * The device-specific probe callback will get invoked by device_add()
|
|
+ */
|
|
+ error = device_add(&mc_dev->dev);
|
|
+ if (error < 0) {
|
|
+ dev_err(parent_dev,
|
|
+ "device_add() failed for device %s: %d\n",
|
|
+ dev_name(&mc_dev->dev), error);
|
|
+ goto error_cleanup_dev;
|
|
+ }
|
|
+
|
|
+ dev_dbg(parent_dev, "added %s\n", dev_name(&mc_dev->dev));
|
|
+
|
|
+ *new_mc_dev = mc_dev;
|
|
+ return 0;
|
|
+
|
|
+error_cleanup_dev:
|
|
+ kfree(mc_dev->regions);
|
|
+ kfree(mc_bus);
|
|
+ kfree(mc_dev);
|
|
+
|
|
+ return error;
|
|
+}
|
|
+EXPORT_SYMBOL_GPL(fsl_mc_device_add);
|
|
+
|
|
+/**
|
|
+ * fsl_mc_device_remove - Remove an fsl-mc device from being visible to
|
|
+ * Linux
|
|
+ *
|
|
+ * @mc_dev: Pointer to an fsl-mc device
|
|
+ */
|
|
+void fsl_mc_device_remove(struct fsl_mc_device *mc_dev)
|
|
+{
|
|
+ kfree(mc_dev->driver_override);
|
|
+ mc_dev->driver_override = NULL;
|
|
+
|
|
+ /*
|
|
+ * The device-specific remove callback will get invoked by device_del()
|
|
+ */
|
|
+ device_del(&mc_dev->dev);
|
|
+ put_device(&mc_dev->dev);
|
|
+}
|
|
+EXPORT_SYMBOL_GPL(fsl_mc_device_remove);
|
|
+
|
|
+static int parse_mc_ranges(struct device *dev,
|
|
+ int *paddr_cells,
|
|
+ int *mc_addr_cells,
|
|
+ int *mc_size_cells,
|
|
+ const __be32 **ranges_start)
|
|
+{
|
|
+ const __be32 *prop;
|
|
+ int range_tuple_cell_count;
|
|
+ int ranges_len;
|
|
+ int tuple_len;
|
|
+ struct device_node *mc_node = dev->of_node;
|
|
+
|
|
+ *ranges_start = of_get_property(mc_node, "ranges", &ranges_len);
|
|
+ if (!(*ranges_start) || !ranges_len) {
|
|
+ dev_warn(dev,
|
|
+ "missing or empty ranges property for device tree node '%s'\n",
|
|
+ mc_node->name);
|
|
+ return 0;
|
|
+ }
|
|
+
|
|
+ *paddr_cells = of_n_addr_cells(mc_node);
|
|
+
|
|
+ prop = of_get_property(mc_node, "#address-cells", NULL);
|
|
+ if (prop)
|
|
+ *mc_addr_cells = be32_to_cpup(prop);
|
|
+ else
|
|
+ *mc_addr_cells = *paddr_cells;
|
|
+
|
|
+ prop = of_get_property(mc_node, "#size-cells", NULL);
|
|
+ if (prop)
|
|
+ *mc_size_cells = be32_to_cpup(prop);
|
|
+ else
|
|
+ *mc_size_cells = of_n_size_cells(mc_node);
|
|
+
|
|
+ range_tuple_cell_count = *paddr_cells + *mc_addr_cells +
|
|
+ *mc_size_cells;
|
|
+
|
|
+ tuple_len = range_tuple_cell_count * sizeof(__be32);
|
|
+ if (ranges_len % tuple_len != 0) {
|
|
+ dev_err(dev, "malformed ranges property '%s'\n", mc_node->name);
|
|
+ return -EINVAL;
|
|
+ }
|
|
+
|
|
+ return ranges_len / tuple_len;
|
|
+}
|
|
+
|
|
+static int get_mc_addr_translation_ranges(struct device *dev,
|
|
+ struct fsl_mc_addr_translation_range
|
|
+ **ranges,
|
|
+ u8 *num_ranges)
|
|
+{
|
|
+ int ret;
|
|
+ int paddr_cells;
|
|
+ int mc_addr_cells;
|
|
+ int mc_size_cells;
|
|
+ int i;
|
|
+ const __be32 *ranges_start;
|
|
+ const __be32 *cell;
|
|
+
|
|
+ ret = parse_mc_ranges(dev,
|
|
+ &paddr_cells,
|
|
+ &mc_addr_cells,
|
|
+ &mc_size_cells,
|
|
+ &ranges_start);
|
|
+ if (ret < 0)
|
|
+ return ret;
|
|
+
|
|
+ *num_ranges = ret;
|
|
+ if (!ret) {
|
|
+ /*
|
|
+ * Missing or empty ranges property ("ranges;") for the
|
|
+ * 'fsl,qoriq-mc' node. In this case, identity mapping
|
|
+ * will be used.
|
|
+ */
|
|
+ *ranges = NULL;
|
|
+ return 0;
|
|
+ }
|
|
+
|
|
+ *ranges = devm_kcalloc(dev, *num_ranges,
|
|
+ sizeof(struct fsl_mc_addr_translation_range),
|
|
+ GFP_KERNEL);
|
|
+ if (!(*ranges))
|
|
+ return -ENOMEM;
|
|
+
|
|
+ cell = ranges_start;
|
|
+ for (i = 0; i < *num_ranges; ++i) {
|
|
+ struct fsl_mc_addr_translation_range *range = &(*ranges)[i];
|
|
+
|
|
+ range->mc_region_type = of_read_number(cell, 1);
|
|
+ range->start_mc_offset = of_read_number(cell + 1,
|
|
+ mc_addr_cells - 1);
|
|
+ cell += mc_addr_cells;
|
|
+ range->start_phys_addr = of_read_number(cell, paddr_cells);
|
|
+ cell += paddr_cells;
|
|
+ range->end_mc_offset = range->start_mc_offset +
|
|
+ of_read_number(cell, mc_size_cells);
|
|
+
|
|
+ cell += mc_size_cells;
|
|
+ }
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+/**
|
|
+ * fsl_mc_bus_probe - callback invoked when the root MC bus is being
|
|
+ * added
|
|
+ */
|
|
+static int fsl_mc_bus_probe(struct platform_device *pdev)
|
|
+{
|
|
+ struct fsl_mc_obj_desc obj_desc;
|
|
+ int error;
|
|
+ struct fsl_mc *mc;
|
|
+ struct fsl_mc_device *mc_bus_dev = NULL;
|
|
+ struct fsl_mc_io *mc_io = NULL;
|
|
+ struct fsl_mc_bus *mc_bus = NULL;
|
|
+ int container_id;
|
|
+ phys_addr_t mc_portal_phys_addr;
|
|
+ u32 mc_portal_size;
|
|
+ struct mc_version mc_version;
|
|
+ struct resource res;
|
|
+
|
|
+ mc = devm_kzalloc(&pdev->dev, sizeof(*mc), GFP_KERNEL);
|
|
+ if (!mc)
|
|
+ return -ENOMEM;
|
|
+
|
|
+ platform_set_drvdata(pdev, mc);
|
|
+
|
|
+ /*
|
|
+ * Get physical address of MC portal for the root DPRC:
|
|
+ */
|
|
+ error = of_address_to_resource(pdev->dev.of_node, 0, &res);
|
|
+ if (error < 0) {
|
|
+ dev_err(&pdev->dev,
|
|
+ "of_address_to_resource() failed for %pOF\n",
|
|
+ pdev->dev.of_node);
|
|
+ return error;
|
|
+ }
|
|
+
|
|
+ mc_portal_phys_addr = res.start;
|
|
+ mc_portal_size = resource_size(&res);
|
|
+ error = fsl_create_mc_io(&pdev->dev, mc_portal_phys_addr,
|
|
+ mc_portal_size, NULL,
|
|
+ FSL_MC_IO_ATOMIC_CONTEXT_PORTAL, &mc_io);
|
|
+ if (error < 0)
|
|
+ return error;
|
|
+
|
|
+ error = mc_get_version(mc_io, 0, &mc_version);
|
|
+ if (error != 0) {
|
|
+ dev_err(&pdev->dev,
|
|
+ "mc_get_version() failed with error %d\n", error);
|
|
+ goto error_cleanup_mc_io;
|
|
+ }
|
|
+
|
|
+ dev_info(&pdev->dev, "MC firmware version: %u.%u.%u\n",
|
|
+ mc_version.major, mc_version.minor, mc_version.revision);
|
|
+
|
|
+ error = get_mc_addr_translation_ranges(&pdev->dev,
|
|
+ &mc->translation_ranges,
|
|
+ &mc->num_translation_ranges);
|
|
+ if (error < 0)
|
|
+ goto error_cleanup_mc_io;
|
|
+
|
|
+ error = dprc_get_container_id(mc_io, 0, &container_id);
|
|
+ if (error < 0) {
|
|
+ dev_err(&pdev->dev,
|
|
+ "dprc_get_container_id() failed: %d\n", error);
|
|
+ goto error_cleanup_mc_io;
|
|
+ }
|
|
+
|
|
+ memset(&obj_desc, 0, sizeof(struct fsl_mc_obj_desc));
|
|
+ error = dprc_get_api_version(mc_io, 0,
|
|
+ &obj_desc.ver_major,
|
|
+ &obj_desc.ver_minor);
|
|
+ if (error < 0)
|
|
+ goto error_cleanup_mc_io;
|
|
+
|
|
+ obj_desc.vendor = FSL_MC_VENDOR_FREESCALE;
|
|
+ strcpy(obj_desc.type, "dprc");
|
|
+ obj_desc.id = container_id;
|
|
+ obj_desc.irq_count = 1;
|
|
+ obj_desc.region_count = 0;
|
|
+
|
|
+ error = fsl_mc_device_add(&obj_desc, mc_io, &pdev->dev, NULL,
|
|
+ &mc_bus_dev);
|
|
+ if (error < 0)
|
|
+ goto error_cleanup_mc_io;
|
|
+
|
|
+ mc_bus = to_fsl_mc_bus(mc_bus_dev);
|
|
+ error = fsl_mc_restool_create_device_file(mc_bus);
|
|
+ if (error < 0)
|
|
+ goto error_cleanup_device;
|
|
+
|
|
+ mc->root_mc_bus_dev = mc_bus_dev;
|
|
+
|
|
+ return 0;
|
|
+
|
|
+error_cleanup_device:
|
|
+ fsl_mc_device_remove(mc_bus_dev);
|
|
+
|
|
+error_cleanup_mc_io:
|
|
+ fsl_destroy_mc_io(mc_io);
|
|
+ return error;
|
|
+}
|
|
+
|
|
+/**
|
|
+ * fsl_mc_bus_remove - callback invoked when the root MC bus is being
|
|
+ * removed
|
|
+ */
|
|
+static int fsl_mc_bus_remove(struct platform_device *pdev)
|
|
+{
|
|
+ struct fsl_mc *mc = platform_get_drvdata(pdev);
|
|
+ struct fsl_mc_bus *mc_bus = to_fsl_mc_bus(mc->root_mc_bus_dev);
|
|
+
|
|
+ if (!fsl_mc_is_root_dprc(&mc->root_mc_bus_dev->dev))
|
|
+ return -EINVAL;
|
|
+
|
|
+ fsl_mc_restool_remove_device_file(mc_bus);
|
|
+ fsl_mc_device_remove(mc->root_mc_bus_dev);
|
|
+
|
|
+ fsl_destroy_mc_io(mc->root_mc_bus_dev->mc_io);
|
|
+ mc->root_mc_bus_dev->mc_io = NULL;
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+static const struct of_device_id fsl_mc_bus_match_table[] = {
|
|
+ {.compatible = "fsl,qoriq-mc",},
|
|
+ {},
|
|
+};
|
|
+
|
|
+MODULE_DEVICE_TABLE(of, fsl_mc_bus_match_table);
|
|
+
|
|
+static struct platform_driver fsl_mc_bus_driver = {
|
|
+ .driver = {
|
|
+ .name = "fsl_mc_bus",
|
|
+ .pm = NULL,
|
|
+ .of_match_table = fsl_mc_bus_match_table,
|
|
+ },
|
|
+ .probe = fsl_mc_bus_probe,
|
|
+ .remove = fsl_mc_bus_remove,
|
|
+};
|
|
+
|
|
+static int __init fsl_mc_bus_driver_init(void)
|
|
+{
|
|
+ int error;
|
|
+
|
|
+ error = bus_register(&fsl_mc_bus_type);
|
|
+ if (error < 0) {
|
|
+ pr_err("bus type registration failed: %d\n", error);
|
|
+ goto error_cleanup_cache;
|
|
+ }
|
|
+
|
|
+ error = platform_driver_register(&fsl_mc_bus_driver);
|
|
+ if (error < 0) {
|
|
+ pr_err("platform_driver_register() failed: %d\n", error);
|
|
+ goto error_cleanup_bus;
|
|
+ }
|
|
+
|
|
+ error = dprc_driver_init();
|
|
+ if (error < 0)
|
|
+ goto error_cleanup_driver;
|
|
+
|
|
+ error = fsl_mc_allocator_driver_init();
|
|
+ if (error < 0)
|
|
+ goto error_cleanup_dprc_driver;
|
|
+
|
|
+ error = fsl_mc_restool_init();
|
|
+ if (error < 0)
|
|
+ goto error_cleanup_mc_allocator;
|
|
+
|
|
+ return 0;
|
|
+
|
|
+error_cleanup_mc_allocator:
|
|
+ fsl_mc_allocator_driver_exit();
|
|
+
|
|
+error_cleanup_dprc_driver:
|
|
+ dprc_driver_exit();
|
|
+
|
|
+error_cleanup_driver:
|
|
+ platform_driver_unregister(&fsl_mc_bus_driver);
|
|
+
|
|
+error_cleanup_bus:
|
|
+ bus_unregister(&fsl_mc_bus_type);
|
|
+
|
|
+error_cleanup_cache:
|
|
+ return error;
|
|
+}
|
|
+postcore_initcall(fsl_mc_bus_driver_init);
|
|
--- a/drivers/staging/fsl-mc/bus/fsl-mc-msi.c
|
|
+++ /dev/null
|
|
@@ -1,285 +0,0 @@
|
|
-// SPDX-License-Identifier: GPL-2.0
|
|
-/*
|
|
- * Freescale Management Complex (MC) bus driver MSI support
|
|
- *
|
|
- * Copyright (C) 2015-2016 Freescale Semiconductor, Inc.
|
|
- * Author: German Rivera <German.Rivera@freescale.com>
|
|
- *
|
|
- */
|
|
-
|
|
-#include <linux/of_device.h>
|
|
-#include <linux/of_address.h>
|
|
-#include <linux/of_irq.h>
|
|
-#include <linux/irq.h>
|
|
-#include <linux/irqdomain.h>
|
|
-#include <linux/msi.h>
|
|
-#include "fsl-mc-private.h"
|
|
-
|
|
-#ifdef GENERIC_MSI_DOMAIN_OPS
|
|
-/*
|
|
- * Generate a unique ID identifying the interrupt (only used within the MSI
|
|
- * irqdomain. Combine the icid with the interrupt index.
|
|
- */
|
|
-static irq_hw_number_t fsl_mc_domain_calc_hwirq(struct fsl_mc_device *dev,
|
|
- struct msi_desc *desc)
|
|
-{
|
|
- /*
|
|
- * Make the base hwirq value for ICID*10000 so it is readable
|
|
- * as a decimal value in /proc/interrupts.
|
|
- */
|
|
- return (irq_hw_number_t)(desc->fsl_mc.msi_index + (dev->icid * 10000));
|
|
-}
|
|
-
|
|
-static void fsl_mc_msi_set_desc(msi_alloc_info_t *arg,
|
|
- struct msi_desc *desc)
|
|
-{
|
|
- arg->desc = desc;
|
|
- arg->hwirq = fsl_mc_domain_calc_hwirq(to_fsl_mc_device(desc->dev),
|
|
- desc);
|
|
-}
|
|
-#else
|
|
-#define fsl_mc_msi_set_desc NULL
|
|
-#endif
|
|
-
|
|
-static void fsl_mc_msi_update_dom_ops(struct msi_domain_info *info)
|
|
-{
|
|
- struct msi_domain_ops *ops = info->ops;
|
|
-
|
|
- if (WARN_ON(!ops))
|
|
- return;
|
|
-
|
|
- /*
|
|
- * set_desc should not be set by the caller
|
|
- */
|
|
- if (!ops->set_desc)
|
|
- ops->set_desc = fsl_mc_msi_set_desc;
|
|
-}
|
|
-
|
|
-static void __fsl_mc_msi_write_msg(struct fsl_mc_device *mc_bus_dev,
|
|
- struct fsl_mc_device_irq *mc_dev_irq)
|
|
-{
|
|
- int error;
|
|
- struct fsl_mc_device *owner_mc_dev = mc_dev_irq->mc_dev;
|
|
- struct msi_desc *msi_desc = mc_dev_irq->msi_desc;
|
|
- struct dprc_irq_cfg irq_cfg;
|
|
-
|
|
- /*
|
|
- * msi_desc->msg.address is 0x0 when this function is invoked in
|
|
- * the free_irq() code path. In this case, for the MC, we don't
|
|
- * really need to "unprogram" the MSI, so we just return.
|
|
- */
|
|
- if (msi_desc->msg.address_lo == 0x0 && msi_desc->msg.address_hi == 0x0)
|
|
- return;
|
|
-
|
|
- if (WARN_ON(!owner_mc_dev))
|
|
- return;
|
|
-
|
|
- irq_cfg.paddr = ((u64)msi_desc->msg.address_hi << 32) |
|
|
- msi_desc->msg.address_lo;
|
|
- irq_cfg.val = msi_desc->msg.data;
|
|
- irq_cfg.irq_num = msi_desc->irq;
|
|
-
|
|
- if (owner_mc_dev == mc_bus_dev) {
|
|
- /*
|
|
- * IRQ is for the mc_bus_dev's DPRC itself
|
|
- */
|
|
- error = dprc_set_irq(mc_bus_dev->mc_io,
|
|
- MC_CMD_FLAG_INTR_DIS | MC_CMD_FLAG_PRI,
|
|
- mc_bus_dev->mc_handle,
|
|
- mc_dev_irq->dev_irq_index,
|
|
- &irq_cfg);
|
|
- if (error < 0) {
|
|
- dev_err(&owner_mc_dev->dev,
|
|
- "dprc_set_irq() failed: %d\n", error);
|
|
- }
|
|
- } else {
|
|
- /*
|
|
- * IRQ is for for a child device of mc_bus_dev
|
|
- */
|
|
- error = dprc_set_obj_irq(mc_bus_dev->mc_io,
|
|
- MC_CMD_FLAG_INTR_DIS | MC_CMD_FLAG_PRI,
|
|
- mc_bus_dev->mc_handle,
|
|
- owner_mc_dev->obj_desc.type,
|
|
- owner_mc_dev->obj_desc.id,
|
|
- mc_dev_irq->dev_irq_index,
|
|
- &irq_cfg);
|
|
- if (error < 0) {
|
|
- dev_err(&owner_mc_dev->dev,
|
|
- "dprc_obj_set_irq() failed: %d\n", error);
|
|
- }
|
|
- }
|
|
-}
|
|
-
|
|
-/*
|
|
- * NOTE: This function is invoked with interrupts disabled
|
|
- */
|
|
-static void fsl_mc_msi_write_msg(struct irq_data *irq_data,
|
|
- struct msi_msg *msg)
|
|
-{
|
|
- struct msi_desc *msi_desc = irq_data_get_msi_desc(irq_data);
|
|
- struct fsl_mc_device *mc_bus_dev = to_fsl_mc_device(msi_desc->dev);
|
|
- struct fsl_mc_bus *mc_bus = to_fsl_mc_bus(mc_bus_dev);
|
|
- struct fsl_mc_device_irq *mc_dev_irq =
|
|
- &mc_bus->irq_resources[msi_desc->fsl_mc.msi_index];
|
|
-
|
|
- WARN_ON(mc_dev_irq->msi_desc != msi_desc);
|
|
- msi_desc->msg = *msg;
|
|
-
|
|
- /*
|
|
- * Program the MSI (paddr, value) pair in the device:
|
|
- */
|
|
- __fsl_mc_msi_write_msg(mc_bus_dev, mc_dev_irq);
|
|
-}
|
|
-
|
|
-static void fsl_mc_msi_update_chip_ops(struct msi_domain_info *info)
|
|
-{
|
|
- struct irq_chip *chip = info->chip;
|
|
-
|
|
- if (WARN_ON((!chip)))
|
|
- return;
|
|
-
|
|
- /*
|
|
- * irq_write_msi_msg should not be set by the caller
|
|
- */
|
|
- if (!chip->irq_write_msi_msg)
|
|
- chip->irq_write_msi_msg = fsl_mc_msi_write_msg;
|
|
-}
|
|
-
|
|
-/**
|
|
- * fsl_mc_msi_create_irq_domain - Create a fsl-mc MSI interrupt domain
|
|
- * @np: Optional device-tree node of the interrupt controller
|
|
- * @info: MSI domain info
|
|
- * @parent: Parent irq domain
|
|
- *
|
|
- * Updates the domain and chip ops and creates a fsl-mc MSI
|
|
- * interrupt domain.
|
|
- *
|
|
- * Returns:
|
|
- * A domain pointer or NULL in case of failure.
|
|
- */
|
|
-struct irq_domain *fsl_mc_msi_create_irq_domain(struct fwnode_handle *fwnode,
|
|
- struct msi_domain_info *info,
|
|
- struct irq_domain *parent)
|
|
-{
|
|
- struct irq_domain *domain;
|
|
-
|
|
- if (info->flags & MSI_FLAG_USE_DEF_DOM_OPS)
|
|
- fsl_mc_msi_update_dom_ops(info);
|
|
- if (info->flags & MSI_FLAG_USE_DEF_CHIP_OPS)
|
|
- fsl_mc_msi_update_chip_ops(info);
|
|
-
|
|
- domain = msi_create_irq_domain(fwnode, info, parent);
|
|
- if (domain)
|
|
- irq_domain_update_bus_token(domain, DOMAIN_BUS_FSL_MC_MSI);
|
|
-
|
|
- return domain;
|
|
-}
|
|
-
|
|
-int fsl_mc_find_msi_domain(struct device *mc_platform_dev,
|
|
- struct irq_domain **mc_msi_domain)
|
|
-{
|
|
- struct irq_domain *msi_domain;
|
|
- struct device_node *mc_of_node = mc_platform_dev->of_node;
|
|
-
|
|
- msi_domain = of_msi_get_domain(mc_platform_dev, mc_of_node,
|
|
- DOMAIN_BUS_FSL_MC_MSI);
|
|
- if (!msi_domain) {
|
|
- pr_err("Unable to find fsl-mc MSI domain for %pOF\n",
|
|
- mc_of_node);
|
|
-
|
|
- return -ENOENT;
|
|
- }
|
|
-
|
|
- *mc_msi_domain = msi_domain;
|
|
- return 0;
|
|
-}
|
|
-
|
|
-static void fsl_mc_msi_free_descs(struct device *dev)
|
|
-{
|
|
- struct msi_desc *desc, *tmp;
|
|
-
|
|
- list_for_each_entry_safe(desc, tmp, dev_to_msi_list(dev), list) {
|
|
- list_del(&desc->list);
|
|
- free_msi_entry(desc);
|
|
- }
|
|
-}
|
|
-
|
|
-static int fsl_mc_msi_alloc_descs(struct device *dev, unsigned int irq_count)
|
|
-
|
|
-{
|
|
- unsigned int i;
|
|
- int error;
|
|
- struct msi_desc *msi_desc;
|
|
-
|
|
- for (i = 0; i < irq_count; i++) {
|
|
- msi_desc = alloc_msi_entry(dev, 1, NULL);
|
|
- if (!msi_desc) {
|
|
- dev_err(dev, "Failed to allocate msi entry\n");
|
|
- error = -ENOMEM;
|
|
- goto cleanup_msi_descs;
|
|
- }
|
|
-
|
|
- msi_desc->fsl_mc.msi_index = i;
|
|
- INIT_LIST_HEAD(&msi_desc->list);
|
|
- list_add_tail(&msi_desc->list, dev_to_msi_list(dev));
|
|
- }
|
|
-
|
|
- return 0;
|
|
-
|
|
-cleanup_msi_descs:
|
|
- fsl_mc_msi_free_descs(dev);
|
|
- return error;
|
|
-}
|
|
-
|
|
-int fsl_mc_msi_domain_alloc_irqs(struct device *dev,
|
|
- unsigned int irq_count)
|
|
-{
|
|
- struct irq_domain *msi_domain;
|
|
- int error;
|
|
-
|
|
- if (WARN_ON(!list_empty(dev_to_msi_list(dev))))
|
|
- return -EINVAL;
|
|
-
|
|
- error = fsl_mc_msi_alloc_descs(dev, irq_count);
|
|
- if (error < 0)
|
|
- return error;
|
|
-
|
|
- msi_domain = dev_get_msi_domain(dev);
|
|
- if (WARN_ON(!msi_domain)) {
|
|
- error = -EINVAL;
|
|
- goto cleanup_msi_descs;
|
|
- }
|
|
-
|
|
- /*
|
|
- * NOTE: Calling this function will trigger the invocation of the
|
|
- * its_fsl_mc_msi_prepare() callback
|
|
- */
|
|
- error = msi_domain_alloc_irqs(msi_domain, dev, irq_count);
|
|
-
|
|
- if (error) {
|
|
- dev_err(dev, "Failed to allocate IRQs\n");
|
|
- goto cleanup_msi_descs;
|
|
- }
|
|
-
|
|
- return 0;
|
|
-
|
|
-cleanup_msi_descs:
|
|
- fsl_mc_msi_free_descs(dev);
|
|
- return error;
|
|
-}
|
|
-
|
|
-void fsl_mc_msi_domain_free_irqs(struct device *dev)
|
|
-{
|
|
- struct irq_domain *msi_domain;
|
|
-
|
|
- msi_domain = dev_get_msi_domain(dev);
|
|
- if (WARN_ON(!msi_domain))
|
|
- return;
|
|
-
|
|
- msi_domain_free_irqs(msi_domain, dev);
|
|
-
|
|
- if (WARN_ON(list_empty(dev_to_msi_list(dev))))
|
|
- return;
|
|
-
|
|
- fsl_mc_msi_free_descs(dev);
|
|
-}
|
|
--- /dev/null
|
|
+++ b/drivers/bus/fsl-mc/fsl-mc-msi.c
|
|
@@ -0,0 +1,285 @@
|
|
+// SPDX-License-Identifier: GPL-2.0
|
|
+/*
|
|
+ * Freescale Management Complex (MC) bus driver MSI support
|
|
+ *
|
|
+ * Copyright (C) 2015-2016 Freescale Semiconductor, Inc.
|
|
+ * Author: German Rivera <German.Rivera@freescale.com>
|
|
+ *
|
|
+ */
|
|
+
|
|
+#include <linux/of_device.h>
|
|
+#include <linux/of_address.h>
|
|
+#include <linux/of_irq.h>
|
|
+#include <linux/irq.h>
|
|
+#include <linux/irqdomain.h>
|
|
+#include <linux/msi.h>
|
|
+
|
|
+#include "fsl-mc-private.h"
|
|
+
|
|
+#ifdef GENERIC_MSI_DOMAIN_OPS
|
|
+/*
|
|
+ * Generate a unique ID identifying the interrupt (only used within the MSI
|
|
+ * irqdomain. Combine the icid with the interrupt index.
|
|
+ */
|
|
+static irq_hw_number_t fsl_mc_domain_calc_hwirq(struct fsl_mc_device *dev,
|
|
+ struct msi_desc *desc)
|
|
+{
|
|
+ /*
|
|
+ * Make the base hwirq value for ICID*10000 so it is readable
|
|
+ * as a decimal value in /proc/interrupts.
|
|
+ */
|
|
+ return (irq_hw_number_t)(desc->fsl_mc.msi_index + (dev->icid * 10000));
|
|
+}
|
|
+
|
|
+static void fsl_mc_msi_set_desc(msi_alloc_info_t *arg,
|
|
+ struct msi_desc *desc)
|
|
+{
|
|
+ arg->desc = desc;
|
|
+ arg->hwirq = fsl_mc_domain_calc_hwirq(to_fsl_mc_device(desc->dev),
|
|
+ desc);
|
|
+}
|
|
+#else
|
|
+#define fsl_mc_msi_set_desc NULL
|
|
+#endif
|
|
+
|
|
+static void fsl_mc_msi_update_dom_ops(struct msi_domain_info *info)
|
|
+{
|
|
+ struct msi_domain_ops *ops = info->ops;
|
|
+
|
|
+ if (!ops)
|
|
+ return;
|
|
+
|
|
+ /*
|
|
+ * set_desc should not be set by the caller
|
|
+ */
|
|
+ if (!ops->set_desc)
|
|
+ ops->set_desc = fsl_mc_msi_set_desc;
|
|
+}
|
|
+
|
|
+static void __fsl_mc_msi_write_msg(struct fsl_mc_device *mc_bus_dev,
|
|
+ struct fsl_mc_device_irq *mc_dev_irq)
|
|
+{
|
|
+ int error;
|
|
+ struct fsl_mc_device *owner_mc_dev = mc_dev_irq->mc_dev;
|
|
+ struct msi_desc *msi_desc = mc_dev_irq->msi_desc;
|
|
+ struct dprc_irq_cfg irq_cfg;
|
|
+
|
|
+ /*
|
|
+ * msi_desc->msg.address is 0x0 when this function is invoked in
|
|
+ * the free_irq() code path. In this case, for the MC, we don't
|
|
+ * really need to "unprogram" the MSI, so we just return.
|
|
+ */
|
|
+ if (msi_desc->msg.address_lo == 0x0 && msi_desc->msg.address_hi == 0x0)
|
|
+ return;
|
|
+
|
|
+ if (!owner_mc_dev)
|
|
+ return;
|
|
+
|
|
+ irq_cfg.paddr = ((u64)msi_desc->msg.address_hi << 32) |
|
|
+ msi_desc->msg.address_lo;
|
|
+ irq_cfg.val = msi_desc->msg.data;
|
|
+ irq_cfg.irq_num = msi_desc->irq;
|
|
+
|
|
+ if (owner_mc_dev == mc_bus_dev) {
|
|
+ /*
|
|
+ * IRQ is for the mc_bus_dev's DPRC itself
|
|
+ */
|
|
+ error = dprc_set_irq(mc_bus_dev->mc_io,
|
|
+ MC_CMD_FLAG_INTR_DIS | MC_CMD_FLAG_PRI,
|
|
+ mc_bus_dev->mc_handle,
|
|
+ mc_dev_irq->dev_irq_index,
|
|
+ &irq_cfg);
|
|
+ if (error < 0) {
|
|
+ dev_err(&owner_mc_dev->dev,
|
|
+ "dprc_set_irq() failed: %d\n", error);
|
|
+ }
|
|
+ } else {
|
|
+ /*
|
|
+ * IRQ is for for a child device of mc_bus_dev
|
|
+ */
|
|
+ error = dprc_set_obj_irq(mc_bus_dev->mc_io,
|
|
+ MC_CMD_FLAG_INTR_DIS | MC_CMD_FLAG_PRI,
|
|
+ mc_bus_dev->mc_handle,
|
|
+ owner_mc_dev->obj_desc.type,
|
|
+ owner_mc_dev->obj_desc.id,
|
|
+ mc_dev_irq->dev_irq_index,
|
|
+ &irq_cfg);
|
|
+ if (error < 0) {
|
|
+ dev_err(&owner_mc_dev->dev,
|
|
+ "dprc_obj_set_irq() failed: %d\n", error);
|
|
+ }
|
|
+ }
|
|
+}
|
|
+
|
|
+/*
|
|
+ * NOTE: This function is invoked with interrupts disabled
|
|
+ */
|
|
+static void fsl_mc_msi_write_msg(struct irq_data *irq_data,
|
|
+ struct msi_msg *msg)
|
|
+{
|
|
+ struct msi_desc *msi_desc = irq_data_get_msi_desc(irq_data);
|
|
+ struct fsl_mc_device *mc_bus_dev = to_fsl_mc_device(msi_desc->dev);
|
|
+ struct fsl_mc_bus *mc_bus = to_fsl_mc_bus(mc_bus_dev);
|
|
+ struct fsl_mc_device_irq *mc_dev_irq =
|
|
+ &mc_bus->irq_resources[msi_desc->fsl_mc.msi_index];
|
|
+
|
|
+ msi_desc->msg = *msg;
|
|
+
|
|
+ /*
|
|
+ * Program the MSI (paddr, value) pair in the device:
|
|
+ */
|
|
+ __fsl_mc_msi_write_msg(mc_bus_dev, mc_dev_irq);
|
|
+}
|
|
+
|
|
+static void fsl_mc_msi_update_chip_ops(struct msi_domain_info *info)
|
|
+{
|
|
+ struct irq_chip *chip = info->chip;
|
|
+
|
|
+ if (!chip)
|
|
+ return;
|
|
+
|
|
+ /*
|
|
+ * irq_write_msi_msg should not be set by the caller
|
|
+ */
|
|
+ if (!chip->irq_write_msi_msg)
|
|
+ chip->irq_write_msi_msg = fsl_mc_msi_write_msg;
|
|
+}
|
|
+
|
|
+/**
|
|
+ * fsl_mc_msi_create_irq_domain - Create a fsl-mc MSI interrupt domain
|
|
+ * @np: Optional device-tree node of the interrupt controller
|
|
+ * @info: MSI domain info
|
|
+ * @parent: Parent irq domain
|
|
+ *
|
|
+ * Updates the domain and chip ops and creates a fsl-mc MSI
|
|
+ * interrupt domain.
|
|
+ *
|
|
+ * Returns:
|
|
+ * A domain pointer or NULL in case of failure.
|
|
+ */
|
|
+struct irq_domain *fsl_mc_msi_create_irq_domain(struct fwnode_handle *fwnode,
|
|
+ struct msi_domain_info *info,
|
|
+ struct irq_domain *parent)
|
|
+{
|
|
+ struct irq_domain *domain;
|
|
+
|
|
+ if (info->flags & MSI_FLAG_USE_DEF_DOM_OPS)
|
|
+ fsl_mc_msi_update_dom_ops(info);
|
|
+ if (info->flags & MSI_FLAG_USE_DEF_CHIP_OPS)
|
|
+ fsl_mc_msi_update_chip_ops(info);
|
|
+
|
|
+ domain = msi_create_irq_domain(fwnode, info, parent);
|
|
+ if (domain)
|
|
+ irq_domain_update_bus_token(domain, DOMAIN_BUS_FSL_MC_MSI);
|
|
+
|
|
+ return domain;
|
|
+}
|
|
+
|
|
+int fsl_mc_find_msi_domain(struct device *mc_platform_dev,
|
|
+ struct irq_domain **mc_msi_domain)
|
|
+{
|
|
+ struct irq_domain *msi_domain;
|
|
+ struct device_node *mc_of_node = mc_platform_dev->of_node;
|
|
+
|
|
+ msi_domain = of_msi_get_domain(mc_platform_dev, mc_of_node,
|
|
+ DOMAIN_BUS_FSL_MC_MSI);
|
|
+ if (!msi_domain) {
|
|
+ pr_err("Unable to find fsl-mc MSI domain for %pOF\n",
|
|
+ mc_of_node);
|
|
+
|
|
+ return -ENOENT;
|
|
+ }
|
|
+
|
|
+ *mc_msi_domain = msi_domain;
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+static void fsl_mc_msi_free_descs(struct device *dev)
|
|
+{
|
|
+ struct msi_desc *desc, *tmp;
|
|
+
|
|
+ list_for_each_entry_safe(desc, tmp, dev_to_msi_list(dev), list) {
|
|
+ list_del(&desc->list);
|
|
+ free_msi_entry(desc);
|
|
+ }
|
|
+}
|
|
+
|
|
+static int fsl_mc_msi_alloc_descs(struct device *dev, unsigned int irq_count)
|
|
+
|
|
+{
|
|
+ unsigned int i;
|
|
+ int error;
|
|
+ struct msi_desc *msi_desc;
|
|
+
|
|
+ for (i = 0; i < irq_count; i++) {
|
|
+ msi_desc = alloc_msi_entry(dev, 1, NULL);
|
|
+ if (!msi_desc) {
|
|
+ dev_err(dev, "Failed to allocate msi entry\n");
|
|
+ error = -ENOMEM;
|
|
+ goto cleanup_msi_descs;
|
|
+ }
|
|
+
|
|
+ msi_desc->fsl_mc.msi_index = i;
|
|
+ INIT_LIST_HEAD(&msi_desc->list);
|
|
+ list_add_tail(&msi_desc->list, dev_to_msi_list(dev));
|
|
+ }
|
|
+
|
|
+ return 0;
|
|
+
|
|
+cleanup_msi_descs:
|
|
+ fsl_mc_msi_free_descs(dev);
|
|
+ return error;
|
|
+}
|
|
+
|
|
+int fsl_mc_msi_domain_alloc_irqs(struct device *dev,
|
|
+ unsigned int irq_count)
|
|
+{
|
|
+ struct irq_domain *msi_domain;
|
|
+ int error;
|
|
+
|
|
+ if (!list_empty(dev_to_msi_list(dev)))
|
|
+ return -EINVAL;
|
|
+
|
|
+ error = fsl_mc_msi_alloc_descs(dev, irq_count);
|
|
+ if (error < 0)
|
|
+ return error;
|
|
+
|
|
+ msi_domain = dev_get_msi_domain(dev);
|
|
+ if (!msi_domain) {
|
|
+ error = -EINVAL;
|
|
+ goto cleanup_msi_descs;
|
|
+ }
|
|
+
|
|
+ /*
|
|
+ * NOTE: Calling this function will trigger the invocation of the
|
|
+ * its_fsl_mc_msi_prepare() callback
|
|
+ */
|
|
+ error = msi_domain_alloc_irqs(msi_domain, dev, irq_count);
|
|
+
|
|
+ if (error) {
|
|
+ dev_err(dev, "Failed to allocate IRQs\n");
|
|
+ goto cleanup_msi_descs;
|
|
+ }
|
|
+
|
|
+ return 0;
|
|
+
|
|
+cleanup_msi_descs:
|
|
+ fsl_mc_msi_free_descs(dev);
|
|
+ return error;
|
|
+}
|
|
+
|
|
+void fsl_mc_msi_domain_free_irqs(struct device *dev)
|
|
+{
|
|
+ struct irq_domain *msi_domain;
|
|
+
|
|
+ msi_domain = dev_get_msi_domain(dev);
|
|
+ if (!msi_domain)
|
|
+ return;
|
|
+
|
|
+ msi_domain_free_irqs(msi_domain, dev);
|
|
+
|
|
+ if (list_empty(dev_to_msi_list(dev)))
|
|
+ return;
|
|
+
|
|
+ fsl_mc_msi_free_descs(dev);
|
|
+}
|
|
--- /dev/null
|
|
+++ b/drivers/bus/fsl-mc/fsl-mc-private.h
|
|
@@ -0,0 +1,223 @@
|
|
+/* SPDX-License-Identifier: GPL-2.0 */
|
|
+/*
|
|
+ * Freescale Management Complex (MC) bus private declarations
|
|
+ *
|
|
+ * Copyright (C) 2016 Freescale Semiconductor, Inc.
|
|
+ *
|
|
+ */
|
|
+#ifndef _FSL_MC_PRIVATE_H_
|
|
+#define _FSL_MC_PRIVATE_H_
|
|
+
|
|
+#include <linux/fsl/mc.h>
|
|
+#include <linux/mutex.h>
|
|
+#include <linux/cdev.h>
|
|
+#include <linux/ioctl.h>
|
|
+
|
|
+/*
|
|
+ * Data Path Management Complex (DPMNG) General API
|
|
+ */
|
|
+
|
|
+/* DPMNG command versioning */
|
|
+#define DPMNG_CMD_BASE_VERSION 1
|
|
+#define DPMNG_CMD_ID_OFFSET 4
|
|
+
|
|
+#define DPMNG_CMD(id) (((id) << DPMNG_CMD_ID_OFFSET) | DPMNG_CMD_BASE_VERSION)
|
|
+
|
|
+/* DPMNG command IDs */
|
|
+#define DPMNG_CMDID_GET_VERSION DPMNG_CMD(0x831)
|
|
+
|
|
+struct dpmng_rsp_get_version {
|
|
+ __le32 revision;
|
|
+ __le32 version_major;
|
|
+ __le32 version_minor;
|
|
+};
|
|
+
|
|
+/*
|
|
+ * Data Path Management Command Portal (DPMCP) API
|
|
+ */
|
|
+
|
|
+/* Minimal supported DPMCP Version */
|
|
+#define DPMCP_MIN_VER_MAJOR 3
|
|
+#define DPMCP_MIN_VER_MINOR 0
|
|
+
|
|
+/* DPMCP command versioning */
|
|
+#define DPMCP_CMD_BASE_VERSION 1
|
|
+#define DPMCP_CMD_ID_OFFSET 4
|
|
+
|
|
+#define DPMCP_CMD(id) (((id) << DPMCP_CMD_ID_OFFSET) | DPMCP_CMD_BASE_VERSION)
|
|
+
|
|
+/* DPMCP command IDs */
|
|
+#define DPMCP_CMDID_CLOSE DPMCP_CMD(0x800)
|
|
+#define DPMCP_CMDID_OPEN DPMCP_CMD(0x80b)
|
|
+#define DPMCP_CMDID_RESET DPMCP_CMD(0x005)
|
|
+
|
|
+struct dpmcp_cmd_open {
|
|
+ __le32 dpmcp_id;
|
|
+};
|
|
+
|
|
+/*
|
|
+ * Initialization and runtime control APIs for DPMCP
|
|
+ */
|
|
+int dpmcp_open(struct fsl_mc_io *mc_io,
|
|
+ u32 cmd_flags,
|
|
+ int dpmcp_id,
|
|
+ u16 *token);
|
|
+
|
|
+int dpmcp_close(struct fsl_mc_io *mc_io,
|
|
+ u32 cmd_flags,
|
|
+ u16 token);
|
|
+
|
|
+int dpmcp_reset(struct fsl_mc_io *mc_io,
|
|
+ u32 cmd_flags,
|
|
+ u16 token);
|
|
+
|
|
+/*
|
|
+ * Data Path Buffer Pool (DPBP) API
|
|
+ */
|
|
+
|
|
+/* DPBP Version */
|
|
+#define DPBP_VER_MAJOR 3
|
|
+#define DPBP_VER_MINOR 2
|
|
+
|
|
+/* Command versioning */
|
|
+#define DPBP_CMD_BASE_VERSION 1
|
|
+#define DPBP_CMD_ID_OFFSET 4
|
|
+
|
|
+#define DPBP_CMD(id) (((id) << DPBP_CMD_ID_OFFSET) | DPBP_CMD_BASE_VERSION)
|
|
+
|
|
+/* Command IDs */
|
|
+#define DPBP_CMDID_CLOSE DPBP_CMD(0x800)
|
|
+#define DPBP_CMDID_OPEN DPBP_CMD(0x804)
|
|
+
|
|
+#define DPBP_CMDID_ENABLE DPBP_CMD(0x002)
|
|
+#define DPBP_CMDID_DISABLE DPBP_CMD(0x003)
|
|
+#define DPBP_CMDID_GET_ATTR DPBP_CMD(0x004)
|
|
+#define DPBP_CMDID_RESET DPBP_CMD(0x005)
|
|
+
|
|
+struct dpbp_cmd_open {
|
|
+ __le32 dpbp_id;
|
|
+};
|
|
+
|
|
+#define DPBP_ENABLE 0x1
|
|
+
|
|
+struct dpbp_rsp_get_attributes {
|
|
+ /* response word 0 */
|
|
+ __le16 pad;
|
|
+ __le16 bpid;
|
|
+ __le32 id;
|
|
+ /* response word 1 */
|
|
+ __le16 version_major;
|
|
+ __le16 version_minor;
|
|
+};
|
|
+
|
|
+/*
|
|
+ * Data Path Concentrator (DPCON) API
|
|
+ */
|
|
+
|
|
+/* DPCON Version */
|
|
+#define DPCON_VER_MAJOR 3
|
|
+#define DPCON_VER_MINOR 2
|
|
+
|
|
+/* Command versioning */
|
|
+#define DPCON_CMD_BASE_VERSION 1
|
|
+#define DPCON_CMD_ID_OFFSET 4
|
|
+
|
|
+#define DPCON_CMD(id) (((id) << DPCON_CMD_ID_OFFSET) | DPCON_CMD_BASE_VERSION)
|
|
+
|
|
+/* Command IDs */
|
|
+#define DPCON_CMDID_CLOSE DPCON_CMD(0x800)
|
|
+#define DPCON_CMDID_OPEN DPCON_CMD(0x808)
|
|
+
|
|
+#define DPCON_CMDID_ENABLE DPCON_CMD(0x002)
|
|
+#define DPCON_CMDID_DISABLE DPCON_CMD(0x003)
|
|
+#define DPCON_CMDID_GET_ATTR DPCON_CMD(0x004)
|
|
+#define DPCON_CMDID_RESET DPCON_CMD(0x005)
|
|
+
|
|
+#define DPCON_CMDID_SET_NOTIFICATION DPCON_CMD(0x100)
|
|
+
|
|
+struct dpcon_cmd_open {
|
|
+ __le32 dpcon_id;
|
|
+};
|
|
+
|
|
+#define DPCON_ENABLE 1
|
|
+
|
|
+struct dpcon_rsp_get_attr {
|
|
+ /* response word 0 */
|
|
+ __le32 id;
|
|
+ __le16 qbman_ch_id;
|
|
+ u8 num_priorities;
|
|
+ u8 pad;
|
|
+};
|
|
+
|
|
+struct dpcon_cmd_set_notification {
|
|
+ /* cmd word 0 */
|
|
+ __le32 dpio_id;
|
|
+ u8 priority;
|
|
+ u8 pad[3];
|
|
+ /* cmd word 1 */
|
|
+ __le64 user_ctx;
|
|
+};
|
|
+
|
|
+int __must_check fsl_mc_device_add(struct fsl_mc_obj_desc *obj_desc,
|
|
+ struct fsl_mc_io *mc_io,
|
|
+ struct device *parent_dev,
|
|
+ const char *driver_override,
|
|
+ struct fsl_mc_device **new_mc_dev);
|
|
+
|
|
+int __init dprc_driver_init(void);
|
|
+
|
|
+void dprc_driver_exit(void);
|
|
+
|
|
+int __init fsl_mc_allocator_driver_init(void);
|
|
+
|
|
+void fsl_mc_allocator_driver_exit(void);
|
|
+
|
|
+int __must_check fsl_mc_resource_allocate(struct fsl_mc_bus *mc_bus,
|
|
+ enum fsl_mc_pool_type pool_type,
|
|
+ struct fsl_mc_resource
|
|
+ **new_resource);
|
|
+
|
|
+void fsl_mc_resource_free(struct fsl_mc_resource *resource);
|
|
+
|
|
+int fsl_mc_msi_domain_alloc_irqs(struct device *dev,
|
|
+ unsigned int irq_count);
|
|
+
|
|
+void fsl_mc_msi_domain_free_irqs(struct device *dev);
|
|
+
|
|
+int __must_check fsl_create_mc_io(struct device *dev,
|
|
+ phys_addr_t mc_portal_phys_addr,
|
|
+ u32 mc_portal_size,
|
|
+ struct fsl_mc_device *dpmcp_dev,
|
|
+ u32 flags, struct fsl_mc_io **new_mc_io);
|
|
+
|
|
+void fsl_destroy_mc_io(struct fsl_mc_io *mc_io);
|
|
+
|
|
+bool fsl_mc_is_root_dprc(struct device *dev);
|
|
+
|
|
+#ifdef CONFIG_FSL_MC_RESTOOL
|
|
+
|
|
+int fsl_mc_restool_create_device_file(struct fsl_mc_bus *mc_bus);
|
|
+
|
|
+void fsl_mc_restool_remove_device_file(struct fsl_mc_bus *mc_bus);
|
|
+
|
|
+int fsl_mc_restool_init(void);
|
|
+
|
|
+#else
|
|
+
|
|
+static inline int fsl_mc_restool_create_device_file(struct fsl_mc_bus *mc_bus)
|
|
+{
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+static inline void fsl_mc_restool_remove_device_file(struct fsl_mc_bus *mc_bus)
|
|
+{
|
|
+}
|
|
+
|
|
+static inline int fsl_mc_restool_init(void)
|
|
+{
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+#endif
|
|
+
|
|
+#endif /* _FSL_MC_PRIVATE_H_ */
|
|
--- /dev/null
|
|
+++ b/drivers/bus/fsl-mc/fsl-mc-restool.c
|
|
@@ -0,0 +1,219 @@
|
|
+// SPDX-License-Identifier: GPL-2.0
|
|
+/*
|
|
+ * Management Complex (MC) restool support
|
|
+ *
|
|
+ * Copyright 2018 NXP
|
|
+ *
|
|
+ */
|
|
+
|
|
+#include <linux/slab.h>
|
|
+#include <linux/cdev.h>
|
|
+#include <linux/fs.h>
|
|
+#include <linux/uaccess.h>
|
|
+
|
|
+#include "fsl-mc-private.h"
|
|
+
|
|
+#define FSL_MC_BUS_MAX_MINORS 1
|
|
+
|
|
+static struct class *fsl_mc_bus_class;
|
|
+static int fsl_mc_bus_major;
|
|
+
|
|
+static int fsl_mc_restool_send_command(unsigned long arg,
|
|
+ struct fsl_mc_io *mc_io)
|
|
+{
|
|
+ struct fsl_mc_command mc_cmd;
|
|
+ int error;
|
|
+
|
|
+ error = copy_from_user(&mc_cmd, (void __user *)arg, sizeof(mc_cmd));
|
|
+ if (error)
|
|
+ return -EFAULT;
|
|
+
|
|
+ error = mc_send_command(mc_io, &mc_cmd);
|
|
+ if (error)
|
|
+ return error;
|
|
+
|
|
+ error = copy_to_user((void __user *)arg, &mc_cmd, sizeof(mc_cmd));
|
|
+ if (error)
|
|
+ return -EFAULT;
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+int fsl_mc_restool_init(void)
|
|
+{
|
|
+ dev_t dev;
|
|
+ int error;
|
|
+
|
|
+ fsl_mc_bus_class = class_create(THIS_MODULE, "fsl_mc_bus");
|
|
+ if (IS_ERR(fsl_mc_bus_class)) {
|
|
+ error = PTR_ERR(fsl_mc_bus_class);
|
|
+ return error;
|
|
+ }
|
|
+
|
|
+ error = alloc_chrdev_region(&dev, 0,
|
|
+ FSL_MC_BUS_MAX_MINORS,
|
|
+ "fsl_mc_bus");
|
|
+ if (error < 0)
|
|
+ return error;
|
|
+
|
|
+ fsl_mc_bus_major = MAJOR(dev);
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+static int fsl_mc_restool_dev_open(struct inode *inode, struct file *filep)
|
|
+{
|
|
+ struct fsl_mc_device *root_mc_device;
|
|
+ struct fsl_mc_restool *mc_restool;
|
|
+ struct fsl_mc_bus *mc_bus;
|
|
+ struct fsl_mc_io *dynamic_mc_io;
|
|
+ int error;
|
|
+
|
|
+ mc_restool = container_of(inode->i_cdev, struct fsl_mc_restool, cdev);
|
|
+ mc_bus = container_of(mc_restool, struct fsl_mc_bus, restool_misc);
|
|
+ root_mc_device = &mc_bus->mc_dev;
|
|
+
|
|
+ mutex_lock(&mc_restool->mutex);
|
|
+
|
|
+ if (!mc_restool->local_instance_in_use) {
|
|
+ filep->private_data = root_mc_device->mc_io;
|
|
+ mc_restool->local_instance_in_use = true;
|
|
+ } else {
|
|
+ dynamic_mc_io = kzalloc(sizeof(*dynamic_mc_io), GFP_KERNEL);
|
|
+ if (!dynamic_mc_io) {
|
|
+ error = -ENOMEM;
|
|
+ goto error_alloc_mc_io;
|
|
+ }
|
|
+
|
|
+ error = fsl_mc_portal_allocate(root_mc_device, 0,
|
|
+ &dynamic_mc_io);
|
|
+ if (error) {
|
|
+ pr_err("Could not allocate MC portal\n");
|
|
+ goto error_portal_allocate;
|
|
+ }
|
|
+
|
|
+ mc_restool->dynamic_instance_count++;
|
|
+ filep->private_data = dynamic_mc_io;
|
|
+ }
|
|
+
|
|
+ mutex_unlock(&mc_restool->mutex);
|
|
+
|
|
+ return 0;
|
|
+
|
|
+error_portal_allocate:
|
|
+ kfree(dynamic_mc_io);
|
|
+
|
|
+error_alloc_mc_io:
|
|
+ mutex_unlock(&mc_restool->mutex);
|
|
+
|
|
+ return error;
|
|
+}
|
|
+
|
|
+static int fsl_mc_restool_dev_release(struct inode *inode, struct file *filep)
|
|
+{
|
|
+ struct fsl_mc_device *root_mc_device;
|
|
+ struct fsl_mc_restool *mc_restool;
|
|
+ struct fsl_mc_bus *mc_bus;
|
|
+ struct fsl_mc_io *mc_io;
|
|
+
|
|
+ mc_restool = container_of(inode->i_cdev, struct fsl_mc_restool, cdev);
|
|
+ mc_bus = container_of(mc_restool, struct fsl_mc_bus, restool_misc);
|
|
+ root_mc_device = &mc_bus->mc_dev;
|
|
+ mc_io = filep->private_data;
|
|
+
|
|
+ mutex_lock(&mc_restool->mutex);
|
|
+
|
|
+ if (WARN_ON(!mc_restool->local_instance_in_use &&
|
|
+ mc_restool->dynamic_instance_count == 0)) {
|
|
+ mutex_unlock(&mc_restool->mutex);
|
|
+ return -EINVAL;
|
|
+ }
|
|
+
|
|
+ if (filep->private_data == root_mc_device->mc_io) {
|
|
+ mc_restool->local_instance_in_use = false;
|
|
+ } else {
|
|
+ fsl_mc_portal_free(mc_io);
|
|
+ kfree(mc_io);
|
|
+ mc_restool->dynamic_instance_count--;
|
|
+ }
|
|
+
|
|
+ filep->private_data = NULL;
|
|
+ mutex_unlock(&mc_restool->mutex);
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+static long fsl_mc_restool_dev_ioctl(struct file *file,
|
|
+ unsigned int cmd,
|
|
+ unsigned long arg)
|
|
+{
|
|
+ int error;
|
|
+
|
|
+ switch (cmd) {
|
|
+ case RESTOOL_SEND_MC_COMMAND:
|
|
+ error = fsl_mc_restool_send_command(arg, file->private_data);
|
|
+ break;
|
|
+ default:
|
|
+ pr_err("%s: unexpected ioctl call number\n", __func__);
|
|
+ error = -EINVAL;
|
|
+ }
|
|
+
|
|
+ return error;
|
|
+}
|
|
+
|
|
+static const struct file_operations fsl_mc_restool_dev_fops = {
|
|
+ .owner = THIS_MODULE,
|
|
+ .open = fsl_mc_restool_dev_open,
|
|
+ .release = fsl_mc_restool_dev_release,
|
|
+ .unlocked_ioctl = fsl_mc_restool_dev_ioctl,
|
|
+};
|
|
+
|
|
+int fsl_mc_restool_create_device_file(struct fsl_mc_bus *mc_bus)
|
|
+{
|
|
+ struct fsl_mc_device *mc_dev = &mc_bus->mc_dev;
|
|
+ struct fsl_mc_restool *mc_restool = &mc_bus->restool_misc;
|
|
+ int error;
|
|
+
|
|
+ mc_restool = &mc_bus->restool_misc;
|
|
+ mc_restool->dev = MKDEV(fsl_mc_bus_major, 0);
|
|
+ cdev_init(&mc_restool->cdev, &fsl_mc_restool_dev_fops);
|
|
+
|
|
+ error = cdev_add(&mc_restool->cdev,
|
|
+ mc_restool->dev,
|
|
+ FSL_MC_BUS_MAX_MINORS);
|
|
+ if (error)
|
|
+ return error;
|
|
+
|
|
+ mc_restool->device = device_create(fsl_mc_bus_class,
|
|
+ NULL,
|
|
+ mc_restool->dev,
|
|
+ NULL,
|
|
+ "%s",
|
|
+ dev_name(&mc_dev->dev));
|
|
+ if (IS_ERR(mc_restool->device)) {
|
|
+ error = PTR_ERR(mc_restool->device);
|
|
+ goto error_device_create;
|
|
+ }
|
|
+
|
|
+ mutex_init(&mc_restool->mutex);
|
|
+
|
|
+ return 0;
|
|
+
|
|
+error_device_create:
|
|
+ cdev_del(&mc_restool->cdev);
|
|
+
|
|
+ return error;
|
|
+}
|
|
+
|
|
+void fsl_mc_restool_remove_device_file(struct fsl_mc_bus *mc_bus)
|
|
+{
|
|
+ struct fsl_mc_restool *mc_restool = &mc_bus->restool_misc;
|
|
+
|
|
+ if (WARN_ON(mc_restool->local_instance_in_use))
|
|
+ return;
|
|
+
|
|
+ if (WARN_ON(mc_restool->dynamic_instance_count != 0))
|
|
+ return;
|
|
+
|
|
+ cdev_del(&mc_restool->cdev);
|
|
+}
|
|
--- a/drivers/staging/fsl-mc/bus/mc-io.c
|
|
+++ /dev/null
|
|
@@ -1,292 +0,0 @@
|
|
-// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
|
|
-/*
|
|
- * Copyright 2013-2016 Freescale Semiconductor Inc.
|
|
- *
|
|
- */
|
|
-
|
|
-#include <linux/io.h>
|
|
-#include "../include/mc.h"
|
|
-
|
|
-#include "fsl-mc-private.h"
|
|
-#include "dpmcp.h"
|
|
-#include "dpmcp-cmd.h"
|
|
-
|
|
-static int fsl_mc_io_set_dpmcp(struct fsl_mc_io *mc_io,
|
|
- struct fsl_mc_device *dpmcp_dev)
|
|
-{
|
|
- int error;
|
|
-
|
|
- if (WARN_ON(!dpmcp_dev))
|
|
- return -EINVAL;
|
|
-
|
|
- if (WARN_ON(mc_io->dpmcp_dev))
|
|
- return -EINVAL;
|
|
-
|
|
- if (WARN_ON(dpmcp_dev->mc_io))
|
|
- return -EINVAL;
|
|
-
|
|
- error = dpmcp_open(mc_io,
|
|
- 0,
|
|
- dpmcp_dev->obj_desc.id,
|
|
- &dpmcp_dev->mc_handle);
|
|
- if (error < 0)
|
|
- return error;
|
|
-
|
|
- mc_io->dpmcp_dev = dpmcp_dev;
|
|
- dpmcp_dev->mc_io = mc_io;
|
|
- return 0;
|
|
-}
|
|
-
|
|
-static void fsl_mc_io_unset_dpmcp(struct fsl_mc_io *mc_io)
|
|
-{
|
|
- int error;
|
|
- struct fsl_mc_device *dpmcp_dev = mc_io->dpmcp_dev;
|
|
-
|
|
- if (WARN_ON(!dpmcp_dev))
|
|
- return;
|
|
-
|
|
- if (WARN_ON(dpmcp_dev->mc_io != mc_io))
|
|
- return;
|
|
-
|
|
- error = dpmcp_close(mc_io,
|
|
- 0,
|
|
- dpmcp_dev->mc_handle);
|
|
- if (error < 0) {
|
|
- dev_err(&dpmcp_dev->dev, "dpmcp_close() failed: %d\n",
|
|
- error);
|
|
- }
|
|
-
|
|
- mc_io->dpmcp_dev = NULL;
|
|
- dpmcp_dev->mc_io = NULL;
|
|
-}
|
|
-
|
|
-/**
|
|
- * Creates an MC I/O object
|
|
- *
|
|
- * @dev: device to be associated with the MC I/O object
|
|
- * @mc_portal_phys_addr: physical address of the MC portal to use
|
|
- * @mc_portal_size: size in bytes of the MC portal
|
|
- * @dpmcp-dev: Pointer to the DPMCP object associated with this MC I/O
|
|
- * object or NULL if none.
|
|
- * @flags: flags for the new MC I/O object
|
|
- * @new_mc_io: Area to return pointer to newly created MC I/O object
|
|
- *
|
|
- * Returns '0' on Success; Error code otherwise.
|
|
- */
|
|
-int __must_check fsl_create_mc_io(struct device *dev,
|
|
- phys_addr_t mc_portal_phys_addr,
|
|
- u32 mc_portal_size,
|
|
- struct fsl_mc_device *dpmcp_dev,
|
|
- u32 flags, struct fsl_mc_io **new_mc_io)
|
|
-{
|
|
- int error;
|
|
- struct fsl_mc_io *mc_io;
|
|
- void __iomem *mc_portal_virt_addr;
|
|
- struct resource *res;
|
|
-
|
|
- mc_io = devm_kzalloc(dev, sizeof(*mc_io), GFP_KERNEL);
|
|
- if (!mc_io)
|
|
- return -ENOMEM;
|
|
-
|
|
- mc_io->dev = dev;
|
|
- mc_io->flags = flags;
|
|
- mc_io->portal_phys_addr = mc_portal_phys_addr;
|
|
- mc_io->portal_size = mc_portal_size;
|
|
- if (flags & FSL_MC_IO_ATOMIC_CONTEXT_PORTAL)
|
|
- spin_lock_init(&mc_io->spinlock);
|
|
- else
|
|
- mutex_init(&mc_io->mutex);
|
|
-
|
|
- res = devm_request_mem_region(dev,
|
|
- mc_portal_phys_addr,
|
|
- mc_portal_size,
|
|
- "mc_portal");
|
|
- if (!res) {
|
|
- dev_err(dev,
|
|
- "devm_request_mem_region failed for MC portal %pa\n",
|
|
- &mc_portal_phys_addr);
|
|
- return -EBUSY;
|
|
- }
|
|
-
|
|
- mc_portal_virt_addr = devm_ioremap_nocache(dev,
|
|
- mc_portal_phys_addr,
|
|
- mc_portal_size);
|
|
- if (!mc_portal_virt_addr) {
|
|
- dev_err(dev,
|
|
- "devm_ioremap_nocache failed for MC portal %pa\n",
|
|
- &mc_portal_phys_addr);
|
|
- return -ENXIO;
|
|
- }
|
|
-
|
|
- mc_io->portal_virt_addr = mc_portal_virt_addr;
|
|
- if (dpmcp_dev) {
|
|
- error = fsl_mc_io_set_dpmcp(mc_io, dpmcp_dev);
|
|
- if (error < 0)
|
|
- goto error_destroy_mc_io;
|
|
- }
|
|
-
|
|
- *new_mc_io = mc_io;
|
|
- return 0;
|
|
-
|
|
-error_destroy_mc_io:
|
|
- fsl_destroy_mc_io(mc_io);
|
|
- return error;
|
|
-}
|
|
-
|
|
-/**
|
|
- * Destroys an MC I/O object
|
|
- *
|
|
- * @mc_io: MC I/O object to destroy
|
|
- */
|
|
-void fsl_destroy_mc_io(struct fsl_mc_io *mc_io)
|
|
-{
|
|
- struct fsl_mc_device *dpmcp_dev = mc_io->dpmcp_dev;
|
|
-
|
|
- if (dpmcp_dev)
|
|
- fsl_mc_io_unset_dpmcp(mc_io);
|
|
-
|
|
- devm_iounmap(mc_io->dev, mc_io->portal_virt_addr);
|
|
- devm_release_mem_region(mc_io->dev,
|
|
- mc_io->portal_phys_addr,
|
|
- mc_io->portal_size);
|
|
-
|
|
- mc_io->portal_virt_addr = NULL;
|
|
- devm_kfree(mc_io->dev, mc_io);
|
|
-}
|
|
-
|
|
-/**
|
|
- * fsl_mc_portal_allocate - Allocates an MC portal
|
|
- *
|
|
- * @mc_dev: MC device for which the MC portal is to be allocated
|
|
- * @mc_io_flags: Flags for the fsl_mc_io object that wraps the allocated
|
|
- * MC portal.
|
|
- * @new_mc_io: Pointer to area where the pointer to the fsl_mc_io object
|
|
- * that wraps the allocated MC portal is to be returned
|
|
- *
|
|
- * This function allocates an MC portal from the device's parent DPRC,
|
|
- * from the corresponding MC bus' pool of MC portals and wraps
|
|
- * it in a new fsl_mc_io object. If 'mc_dev' is a DPRC itself, the
|
|
- * portal is allocated from its own MC bus.
|
|
- */
|
|
-int __must_check fsl_mc_portal_allocate(struct fsl_mc_device *mc_dev,
|
|
- u16 mc_io_flags,
|
|
- struct fsl_mc_io **new_mc_io)
|
|
-{
|
|
- struct fsl_mc_device *mc_bus_dev;
|
|
- struct fsl_mc_bus *mc_bus;
|
|
- phys_addr_t mc_portal_phys_addr;
|
|
- size_t mc_portal_size;
|
|
- struct fsl_mc_device *dpmcp_dev;
|
|
- int error = -EINVAL;
|
|
- struct fsl_mc_resource *resource = NULL;
|
|
- struct fsl_mc_io *mc_io = NULL;
|
|
-
|
|
- if (mc_dev->flags & FSL_MC_IS_DPRC) {
|
|
- mc_bus_dev = mc_dev;
|
|
- } else {
|
|
- if (WARN_ON(!dev_is_fsl_mc(mc_dev->dev.parent)))
|
|
- return error;
|
|
-
|
|
- mc_bus_dev = to_fsl_mc_device(mc_dev->dev.parent);
|
|
- }
|
|
-
|
|
- mc_bus = to_fsl_mc_bus(mc_bus_dev);
|
|
- *new_mc_io = NULL;
|
|
- error = fsl_mc_resource_allocate(mc_bus, FSL_MC_POOL_DPMCP, &resource);
|
|
- if (error < 0)
|
|
- return error;
|
|
-
|
|
- error = -EINVAL;
|
|
- dpmcp_dev = resource->data;
|
|
- if (WARN_ON(!dpmcp_dev))
|
|
- goto error_cleanup_resource;
|
|
-
|
|
- if (dpmcp_dev->obj_desc.ver_major < DPMCP_MIN_VER_MAJOR ||
|
|
- (dpmcp_dev->obj_desc.ver_major == DPMCP_MIN_VER_MAJOR &&
|
|
- dpmcp_dev->obj_desc.ver_minor < DPMCP_MIN_VER_MINOR)) {
|
|
- dev_err(&dpmcp_dev->dev,
|
|
- "ERROR: Version %d.%d of DPMCP not supported.\n",
|
|
- dpmcp_dev->obj_desc.ver_major,
|
|
- dpmcp_dev->obj_desc.ver_minor);
|
|
- error = -ENOTSUPP;
|
|
- goto error_cleanup_resource;
|
|
- }
|
|
-
|
|
- if (WARN_ON(dpmcp_dev->obj_desc.region_count == 0))
|
|
- goto error_cleanup_resource;
|
|
-
|
|
- mc_portal_phys_addr = dpmcp_dev->regions[0].start;
|
|
- mc_portal_size = resource_size(dpmcp_dev->regions);
|
|
-
|
|
- if (WARN_ON(mc_portal_size != mc_bus_dev->mc_io->portal_size))
|
|
- goto error_cleanup_resource;
|
|
-
|
|
- error = fsl_create_mc_io(&mc_bus_dev->dev,
|
|
- mc_portal_phys_addr,
|
|
- mc_portal_size, dpmcp_dev,
|
|
- mc_io_flags, &mc_io);
|
|
- if (error < 0)
|
|
- goto error_cleanup_resource;
|
|
-
|
|
- *new_mc_io = mc_io;
|
|
- return 0;
|
|
-
|
|
-error_cleanup_resource:
|
|
- fsl_mc_resource_free(resource);
|
|
- return error;
|
|
-}
|
|
-EXPORT_SYMBOL_GPL(fsl_mc_portal_allocate);
|
|
-
|
|
-/**
|
|
- * fsl_mc_portal_free - Returns an MC portal to the pool of free MC portals
|
|
- * of a given MC bus
|
|
- *
|
|
- * @mc_io: Pointer to the fsl_mc_io object that wraps the MC portal to free
|
|
- */
|
|
-void fsl_mc_portal_free(struct fsl_mc_io *mc_io)
|
|
-{
|
|
- struct fsl_mc_device *dpmcp_dev;
|
|
- struct fsl_mc_resource *resource;
|
|
-
|
|
- /*
|
|
- * Every mc_io obtained by calling fsl_mc_portal_allocate() is supposed
|
|
- * to have a DPMCP object associated with.
|
|
- */
|
|
- dpmcp_dev = mc_io->dpmcp_dev;
|
|
- if (WARN_ON(!dpmcp_dev))
|
|
- return;
|
|
-
|
|
- resource = dpmcp_dev->resource;
|
|
- if (WARN_ON(!resource || resource->type != FSL_MC_POOL_DPMCP))
|
|
- return;
|
|
-
|
|
- if (WARN_ON(resource->data != dpmcp_dev))
|
|
- return;
|
|
-
|
|
- fsl_destroy_mc_io(mc_io);
|
|
- fsl_mc_resource_free(resource);
|
|
-}
|
|
-EXPORT_SYMBOL_GPL(fsl_mc_portal_free);
|
|
-
|
|
-/**
|
|
- * fsl_mc_portal_reset - Resets the dpmcp object for a given fsl_mc_io object
|
|
- *
|
|
- * @mc_io: Pointer to the fsl_mc_io object that wraps the MC portal to free
|
|
- */
|
|
-int fsl_mc_portal_reset(struct fsl_mc_io *mc_io)
|
|
-{
|
|
- int error;
|
|
- struct fsl_mc_device *dpmcp_dev = mc_io->dpmcp_dev;
|
|
-
|
|
- if (WARN_ON(!dpmcp_dev))
|
|
- return -EINVAL;
|
|
-
|
|
- error = dpmcp_reset(mc_io, 0, dpmcp_dev->mc_handle);
|
|
- if (error < 0) {
|
|
- dev_err(&dpmcp_dev->dev, "dpmcp_reset() failed: %d\n", error);
|
|
- return error;
|
|
- }
|
|
-
|
|
- return 0;
|
|
-}
|
|
-EXPORT_SYMBOL_GPL(fsl_mc_portal_reset);
|
|
--- /dev/null
|
|
+++ b/drivers/bus/fsl-mc/mc-io.c
|
|
@@ -0,0 +1,268 @@
|
|
+// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
|
|
+/*
|
|
+ * Copyright 2013-2016 Freescale Semiconductor Inc.
|
|
+ *
|
|
+ */
|
|
+
|
|
+#include <linux/io.h>
|
|
+#include <linux/fsl/mc.h>
|
|
+
|
|
+#include "fsl-mc-private.h"
|
|
+
|
|
+static int fsl_mc_io_set_dpmcp(struct fsl_mc_io *mc_io,
|
|
+ struct fsl_mc_device *dpmcp_dev)
|
|
+{
|
|
+ int error;
|
|
+
|
|
+ if (mc_io->dpmcp_dev)
|
|
+ return -EINVAL;
|
|
+
|
|
+ if (dpmcp_dev->mc_io)
|
|
+ return -EINVAL;
|
|
+
|
|
+ error = dpmcp_open(mc_io,
|
|
+ 0,
|
|
+ dpmcp_dev->obj_desc.id,
|
|
+ &dpmcp_dev->mc_handle);
|
|
+ if (error < 0)
|
|
+ return error;
|
|
+
|
|
+ mc_io->dpmcp_dev = dpmcp_dev;
|
|
+ dpmcp_dev->mc_io = mc_io;
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+static void fsl_mc_io_unset_dpmcp(struct fsl_mc_io *mc_io)
|
|
+{
|
|
+ int error;
|
|
+ struct fsl_mc_device *dpmcp_dev = mc_io->dpmcp_dev;
|
|
+
|
|
+ error = dpmcp_close(mc_io,
|
|
+ 0,
|
|
+ dpmcp_dev->mc_handle);
|
|
+ if (error < 0) {
|
|
+ dev_err(&dpmcp_dev->dev, "dpmcp_close() failed: %d\n",
|
|
+ error);
|
|
+ }
|
|
+
|
|
+ mc_io->dpmcp_dev = NULL;
|
|
+ dpmcp_dev->mc_io = NULL;
|
|
+}
|
|
+
|
|
+/**
|
|
+ * Creates an MC I/O object
|
|
+ *
|
|
+ * @dev: device to be associated with the MC I/O object
|
|
+ * @mc_portal_phys_addr: physical address of the MC portal to use
|
|
+ * @mc_portal_size: size in bytes of the MC portal
|
|
+ * @dpmcp-dev: Pointer to the DPMCP object associated with this MC I/O
|
|
+ * object or NULL if none.
|
|
+ * @flags: flags for the new MC I/O object
|
|
+ * @new_mc_io: Area to return pointer to newly created MC I/O object
|
|
+ *
|
|
+ * Returns '0' on Success; Error code otherwise.
|
|
+ */
|
|
+int __must_check fsl_create_mc_io(struct device *dev,
|
|
+ phys_addr_t mc_portal_phys_addr,
|
|
+ u32 mc_portal_size,
|
|
+ struct fsl_mc_device *dpmcp_dev,
|
|
+ u32 flags, struct fsl_mc_io **new_mc_io)
|
|
+{
|
|
+ int error;
|
|
+ struct fsl_mc_io *mc_io;
|
|
+ void __iomem *mc_portal_virt_addr;
|
|
+ struct resource *res;
|
|
+
|
|
+ mc_io = devm_kzalloc(dev, sizeof(*mc_io), GFP_KERNEL);
|
|
+ if (!mc_io)
|
|
+ return -ENOMEM;
|
|
+
|
|
+ mc_io->dev = dev;
|
|
+ mc_io->flags = flags;
|
|
+ mc_io->portal_phys_addr = mc_portal_phys_addr;
|
|
+ mc_io->portal_size = mc_portal_size;
|
|
+ if (flags & FSL_MC_IO_ATOMIC_CONTEXT_PORTAL)
|
|
+ spin_lock_init(&mc_io->spinlock);
|
|
+ else
|
|
+ mutex_init(&mc_io->mutex);
|
|
+
|
|
+ res = devm_request_mem_region(dev,
|
|
+ mc_portal_phys_addr,
|
|
+ mc_portal_size,
|
|
+ "mc_portal");
|
|
+ if (!res) {
|
|
+ dev_err(dev,
|
|
+ "devm_request_mem_region failed for MC portal %pa\n",
|
|
+ &mc_portal_phys_addr);
|
|
+ return -EBUSY;
|
|
+ }
|
|
+
|
|
+ mc_portal_virt_addr = devm_ioremap_nocache(dev,
|
|
+ mc_portal_phys_addr,
|
|
+ mc_portal_size);
|
|
+ if (!mc_portal_virt_addr) {
|
|
+ dev_err(dev,
|
|
+ "devm_ioremap_nocache failed for MC portal %pa\n",
|
|
+ &mc_portal_phys_addr);
|
|
+ return -ENXIO;
|
|
+ }
|
|
+
|
|
+ mc_io->portal_virt_addr = mc_portal_virt_addr;
|
|
+ if (dpmcp_dev) {
|
|
+ error = fsl_mc_io_set_dpmcp(mc_io, dpmcp_dev);
|
|
+ if (error < 0)
|
|
+ goto error_destroy_mc_io;
|
|
+ }
|
|
+
|
|
+ *new_mc_io = mc_io;
|
|
+ return 0;
|
|
+
|
|
+error_destroy_mc_io:
|
|
+ fsl_destroy_mc_io(mc_io);
|
|
+ return error;
|
|
+}
|
|
+
|
|
+/**
|
|
+ * Destroys an MC I/O object
|
|
+ *
|
|
+ * @mc_io: MC I/O object to destroy
|
|
+ */
|
|
+void fsl_destroy_mc_io(struct fsl_mc_io *mc_io)
|
|
+{
|
|
+ struct fsl_mc_device *dpmcp_dev = mc_io->dpmcp_dev;
|
|
+
|
|
+ if (dpmcp_dev)
|
|
+ fsl_mc_io_unset_dpmcp(mc_io);
|
|
+
|
|
+ devm_iounmap(mc_io->dev, mc_io->portal_virt_addr);
|
|
+ devm_release_mem_region(mc_io->dev,
|
|
+ mc_io->portal_phys_addr,
|
|
+ mc_io->portal_size);
|
|
+
|
|
+ mc_io->portal_virt_addr = NULL;
|
|
+ devm_kfree(mc_io->dev, mc_io);
|
|
+}
|
|
+
|
|
+/**
|
|
+ * fsl_mc_portal_allocate - Allocates an MC portal
|
|
+ *
|
|
+ * @mc_dev: MC device for which the MC portal is to be allocated
|
|
+ * @mc_io_flags: Flags for the fsl_mc_io object that wraps the allocated
|
|
+ * MC portal.
|
|
+ * @new_mc_io: Pointer to area where the pointer to the fsl_mc_io object
|
|
+ * that wraps the allocated MC portal is to be returned
|
|
+ *
|
|
+ * This function allocates an MC portal from the device's parent DPRC,
|
|
+ * from the corresponding MC bus' pool of MC portals and wraps
|
|
+ * it in a new fsl_mc_io object. If 'mc_dev' is a DPRC itself, the
|
|
+ * portal is allocated from its own MC bus.
|
|
+ */
|
|
+int __must_check fsl_mc_portal_allocate(struct fsl_mc_device *mc_dev,
|
|
+ u16 mc_io_flags,
|
|
+ struct fsl_mc_io **new_mc_io)
|
|
+{
|
|
+ struct fsl_mc_device *mc_bus_dev;
|
|
+ struct fsl_mc_bus *mc_bus;
|
|
+ phys_addr_t mc_portal_phys_addr;
|
|
+ size_t mc_portal_size;
|
|
+ struct fsl_mc_device *dpmcp_dev;
|
|
+ int error = -EINVAL;
|
|
+ struct fsl_mc_resource *resource = NULL;
|
|
+ struct fsl_mc_io *mc_io = NULL;
|
|
+
|
|
+ if (mc_dev->flags & FSL_MC_IS_DPRC) {
|
|
+ mc_bus_dev = mc_dev;
|
|
+ } else {
|
|
+ if (!dev_is_fsl_mc(mc_dev->dev.parent))
|
|
+ return error;
|
|
+
|
|
+ mc_bus_dev = to_fsl_mc_device(mc_dev->dev.parent);
|
|
+ }
|
|
+
|
|
+ mc_bus = to_fsl_mc_bus(mc_bus_dev);
|
|
+ *new_mc_io = NULL;
|
|
+ error = fsl_mc_resource_allocate(mc_bus, FSL_MC_POOL_DPMCP, &resource);
|
|
+ if (error < 0)
|
|
+ return error;
|
|
+
|
|
+ error = -EINVAL;
|
|
+ dpmcp_dev = resource->data;
|
|
+
|
|
+ if (dpmcp_dev->obj_desc.ver_major < DPMCP_MIN_VER_MAJOR ||
|
|
+ (dpmcp_dev->obj_desc.ver_major == DPMCP_MIN_VER_MAJOR &&
|
|
+ dpmcp_dev->obj_desc.ver_minor < DPMCP_MIN_VER_MINOR)) {
|
|
+ dev_err(&dpmcp_dev->dev,
|
|
+ "ERROR: Version %d.%d of DPMCP not supported.\n",
|
|
+ dpmcp_dev->obj_desc.ver_major,
|
|
+ dpmcp_dev->obj_desc.ver_minor);
|
|
+ error = -ENOTSUPP;
|
|
+ goto error_cleanup_resource;
|
|
+ }
|
|
+
|
|
+ mc_portal_phys_addr = dpmcp_dev->regions[0].start;
|
|
+ mc_portal_size = resource_size(dpmcp_dev->regions);
|
|
+
|
|
+ error = fsl_create_mc_io(&mc_bus_dev->dev,
|
|
+ mc_portal_phys_addr,
|
|
+ mc_portal_size, dpmcp_dev,
|
|
+ mc_io_flags, &mc_io);
|
|
+ if (error < 0)
|
|
+ goto error_cleanup_resource;
|
|
+
|
|
+ *new_mc_io = mc_io;
|
|
+ return 0;
|
|
+
|
|
+error_cleanup_resource:
|
|
+ fsl_mc_resource_free(resource);
|
|
+ return error;
|
|
+}
|
|
+EXPORT_SYMBOL_GPL(fsl_mc_portal_allocate);
|
|
+
|
|
+/**
|
|
+ * fsl_mc_portal_free - Returns an MC portal to the pool of free MC portals
|
|
+ * of a given MC bus
|
|
+ *
|
|
+ * @mc_io: Pointer to the fsl_mc_io object that wraps the MC portal to free
|
|
+ */
|
|
+void fsl_mc_portal_free(struct fsl_mc_io *mc_io)
|
|
+{
|
|
+ struct fsl_mc_device *dpmcp_dev;
|
|
+ struct fsl_mc_resource *resource;
|
|
+
|
|
+ /*
|
|
+ * Every mc_io obtained by calling fsl_mc_portal_allocate() is supposed
|
|
+ * to have a DPMCP object associated with.
|
|
+ */
|
|
+ dpmcp_dev = mc_io->dpmcp_dev;
|
|
+
|
|
+ resource = dpmcp_dev->resource;
|
|
+ if (!resource || resource->type != FSL_MC_POOL_DPMCP)
|
|
+ return;
|
|
+
|
|
+ if (resource->data != dpmcp_dev)
|
|
+ return;
|
|
+
|
|
+ fsl_destroy_mc_io(mc_io);
|
|
+ fsl_mc_resource_free(resource);
|
|
+}
|
|
+EXPORT_SYMBOL_GPL(fsl_mc_portal_free);
|
|
+
|
|
+/**
|
|
+ * fsl_mc_portal_reset - Resets the dpmcp object for a given fsl_mc_io object
|
|
+ *
|
|
+ * @mc_io: Pointer to the fsl_mc_io object that wraps the MC portal to free
|
|
+ */
|
|
+int fsl_mc_portal_reset(struct fsl_mc_io *mc_io)
|
|
+{
|
|
+ int error;
|
|
+ struct fsl_mc_device *dpmcp_dev = mc_io->dpmcp_dev;
|
|
+
|
|
+ error = dpmcp_reset(mc_io, 0, dpmcp_dev->mc_handle);
|
|
+ if (error < 0) {
|
|
+ dev_err(&dpmcp_dev->dev, "dpmcp_reset() failed: %d\n", error);
|
|
+ return error;
|
|
+ }
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+EXPORT_SYMBOL_GPL(fsl_mc_portal_reset);
|
|
--- a/drivers/staging/fsl-mc/bus/mc-sys.c
|
|
+++ /dev/null
|
|
@@ -1,297 +0,0 @@
|
|
-// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
|
|
-/*
|
|
- * Copyright 2013-2016 Freescale Semiconductor Inc.
|
|
- *
|
|
- * I/O services to send MC commands to the MC hardware
|
|
- *
|
|
- */
|
|
-
|
|
-#include <linux/delay.h>
|
|
-#include <linux/slab.h>
|
|
-#include <linux/ioport.h>
|
|
-#include <linux/device.h>
|
|
-#include <linux/io.h>
|
|
-#include <linux/io-64-nonatomic-hi-lo.h>
|
|
-#include "../include/mc.h"
|
|
-
|
|
-#include "dpmcp.h"
|
|
-
|
|
-/**
|
|
- * Timeout in milliseconds to wait for the completion of an MC command
|
|
- */
|
|
-#define MC_CMD_COMPLETION_TIMEOUT_MS 500
|
|
-
|
|
-/*
|
|
- * usleep_range() min and max values used to throttle down polling
|
|
- * iterations while waiting for MC command completion
|
|
- */
|
|
-#define MC_CMD_COMPLETION_POLLING_MIN_SLEEP_USECS 10
|
|
-#define MC_CMD_COMPLETION_POLLING_MAX_SLEEP_USECS 500
|
|
-
|
|
-static enum mc_cmd_status mc_cmd_hdr_read_status(struct mc_command *cmd)
|
|
-{
|
|
- struct mc_cmd_header *hdr = (struct mc_cmd_header *)&cmd->header;
|
|
-
|
|
- return (enum mc_cmd_status)hdr->status;
|
|
-}
|
|
-
|
|
-static u16 mc_cmd_hdr_read_cmdid(struct mc_command *cmd)
|
|
-{
|
|
- struct mc_cmd_header *hdr = (struct mc_cmd_header *)&cmd->header;
|
|
- u16 cmd_id = le16_to_cpu(hdr->cmd_id);
|
|
-
|
|
- return cmd_id;
|
|
-}
|
|
-
|
|
-static int mc_status_to_error(enum mc_cmd_status status)
|
|
-{
|
|
- static const int mc_status_to_error_map[] = {
|
|
- [MC_CMD_STATUS_OK] = 0,
|
|
- [MC_CMD_STATUS_AUTH_ERR] = -EACCES,
|
|
- [MC_CMD_STATUS_NO_PRIVILEGE] = -EPERM,
|
|
- [MC_CMD_STATUS_DMA_ERR] = -EIO,
|
|
- [MC_CMD_STATUS_CONFIG_ERR] = -ENXIO,
|
|
- [MC_CMD_STATUS_TIMEOUT] = -ETIMEDOUT,
|
|
- [MC_CMD_STATUS_NO_RESOURCE] = -ENAVAIL,
|
|
- [MC_CMD_STATUS_NO_MEMORY] = -ENOMEM,
|
|
- [MC_CMD_STATUS_BUSY] = -EBUSY,
|
|
- [MC_CMD_STATUS_UNSUPPORTED_OP] = -ENOTSUPP,
|
|
- [MC_CMD_STATUS_INVALID_STATE] = -ENODEV,
|
|
- };
|
|
-
|
|
- if (WARN_ON((u32)status >= ARRAY_SIZE(mc_status_to_error_map)))
|
|
- return -EINVAL;
|
|
-
|
|
- return mc_status_to_error_map[status];
|
|
-}
|
|
-
|
|
-static const char *mc_status_to_string(enum mc_cmd_status status)
|
|
-{
|
|
- static const char *const status_strings[] = {
|
|
- [MC_CMD_STATUS_OK] = "Command completed successfully",
|
|
- [MC_CMD_STATUS_READY] = "Command ready to be processed",
|
|
- [MC_CMD_STATUS_AUTH_ERR] = "Authentication error",
|
|
- [MC_CMD_STATUS_NO_PRIVILEGE] = "No privilege",
|
|
- [MC_CMD_STATUS_DMA_ERR] = "DMA or I/O error",
|
|
- [MC_CMD_STATUS_CONFIG_ERR] = "Configuration error",
|
|
- [MC_CMD_STATUS_TIMEOUT] = "Operation timed out",
|
|
- [MC_CMD_STATUS_NO_RESOURCE] = "No resources",
|
|
- [MC_CMD_STATUS_NO_MEMORY] = "No memory available",
|
|
- [MC_CMD_STATUS_BUSY] = "Device is busy",
|
|
- [MC_CMD_STATUS_UNSUPPORTED_OP] = "Unsupported operation",
|
|
- [MC_CMD_STATUS_INVALID_STATE] = "Invalid state"
|
|
- };
|
|
-
|
|
- if ((unsigned int)status >= ARRAY_SIZE(status_strings))
|
|
- return "Unknown MC error";
|
|
-
|
|
- return status_strings[status];
|
|
-}
|
|
-
|
|
-/**
|
|
- * mc_write_command - writes a command to a Management Complex (MC) portal
|
|
- *
|
|
- * @portal: pointer to an MC portal
|
|
- * @cmd: pointer to a filled command
|
|
- */
|
|
-static inline void mc_write_command(struct mc_command __iomem *portal,
|
|
- struct mc_command *cmd)
|
|
-{
|
|
- int i;
|
|
-
|
|
- /* copy command parameters into the portal */
|
|
- for (i = 0; i < MC_CMD_NUM_OF_PARAMS; i++)
|
|
- /*
|
|
- * Data is already in the expected LE byte-order. Do an
|
|
- * extra LE -> CPU conversion so that the CPU -> LE done in
|
|
- * the device io write api puts it back in the right order.
|
|
- */
|
|
- writeq_relaxed(le64_to_cpu(cmd->params[i]), &portal->params[i]);
|
|
-
|
|
- /* submit the command by writing the header */
|
|
- writeq(le64_to_cpu(cmd->header), &portal->header);
|
|
-}
|
|
-
|
|
-/**
|
|
- * mc_read_response - reads the response for the last MC command from a
|
|
- * Management Complex (MC) portal
|
|
- *
|
|
- * @portal: pointer to an MC portal
|
|
- * @resp: pointer to command response buffer
|
|
- *
|
|
- * Returns MC_CMD_STATUS_OK on Success; Error code otherwise.
|
|
- */
|
|
-static inline enum mc_cmd_status mc_read_response(struct mc_command __iomem *
|
|
- portal,
|
|
- struct mc_command *resp)
|
|
-{
|
|
- int i;
|
|
- enum mc_cmd_status status;
|
|
-
|
|
- /* Copy command response header from MC portal: */
|
|
- resp->header = cpu_to_le64(readq_relaxed(&portal->header));
|
|
- status = mc_cmd_hdr_read_status(resp);
|
|
- if (status != MC_CMD_STATUS_OK)
|
|
- return status;
|
|
-
|
|
- /* Copy command response data from MC portal: */
|
|
- for (i = 0; i < MC_CMD_NUM_OF_PARAMS; i++)
|
|
- /*
|
|
- * Data is expected to be in LE byte-order. Do an
|
|
- * extra CPU -> LE to revert the LE -> CPU done in
|
|
- * the device io read api.
|
|
- */
|
|
- resp->params[i] =
|
|
- cpu_to_le64(readq_relaxed(&portal->params[i]));
|
|
-
|
|
- return status;
|
|
-}
|
|
-
|
|
-/**
|
|
- * Waits for the completion of an MC command doing preemptible polling.
|
|
- * uslepp_range() is called between polling iterations.
|
|
- *
|
|
- * @mc_io: MC I/O object to be used
|
|
- * @cmd: command buffer to receive MC response
|
|
- * @mc_status: MC command completion status
|
|
- */
|
|
-static int mc_polling_wait_preemptible(struct fsl_mc_io *mc_io,
|
|
- struct mc_command *cmd,
|
|
- enum mc_cmd_status *mc_status)
|
|
-{
|
|
- enum mc_cmd_status status;
|
|
- unsigned long jiffies_until_timeout =
|
|
- jiffies + msecs_to_jiffies(MC_CMD_COMPLETION_TIMEOUT_MS);
|
|
-
|
|
- /*
|
|
- * Wait for response from the MC hardware:
|
|
- */
|
|
- for (;;) {
|
|
- status = mc_read_response(mc_io->portal_virt_addr, cmd);
|
|
- if (status != MC_CMD_STATUS_READY)
|
|
- break;
|
|
-
|
|
- /*
|
|
- * TODO: When MC command completion interrupts are supported
|
|
- * call wait function here instead of usleep_range()
|
|
- */
|
|
- usleep_range(MC_CMD_COMPLETION_POLLING_MIN_SLEEP_USECS,
|
|
- MC_CMD_COMPLETION_POLLING_MAX_SLEEP_USECS);
|
|
-
|
|
- if (time_after_eq(jiffies, jiffies_until_timeout)) {
|
|
- dev_dbg(mc_io->dev,
|
|
- "MC command timed out (portal: %pa, dprc handle: %#x, command: %#x)\n",
|
|
- &mc_io->portal_phys_addr,
|
|
- (unsigned int)mc_cmd_hdr_read_token(cmd),
|
|
- (unsigned int)mc_cmd_hdr_read_cmdid(cmd));
|
|
-
|
|
- return -ETIMEDOUT;
|
|
- }
|
|
- }
|
|
-
|
|
- *mc_status = status;
|
|
- return 0;
|
|
-}
|
|
-
|
|
-/**
|
|
- * Waits for the completion of an MC command doing atomic polling.
|
|
- * udelay() is called between polling iterations.
|
|
- *
|
|
- * @mc_io: MC I/O object to be used
|
|
- * @cmd: command buffer to receive MC response
|
|
- * @mc_status: MC command completion status
|
|
- */
|
|
-static int mc_polling_wait_atomic(struct fsl_mc_io *mc_io,
|
|
- struct mc_command *cmd,
|
|
- enum mc_cmd_status *mc_status)
|
|
-{
|
|
- enum mc_cmd_status status;
|
|
- unsigned long timeout_usecs = MC_CMD_COMPLETION_TIMEOUT_MS * 1000;
|
|
-
|
|
- BUILD_BUG_ON((MC_CMD_COMPLETION_TIMEOUT_MS * 1000) %
|
|
- MC_CMD_COMPLETION_POLLING_MAX_SLEEP_USECS != 0);
|
|
-
|
|
- for (;;) {
|
|
- status = mc_read_response(mc_io->portal_virt_addr, cmd);
|
|
- if (status != MC_CMD_STATUS_READY)
|
|
- break;
|
|
-
|
|
- udelay(MC_CMD_COMPLETION_POLLING_MAX_SLEEP_USECS);
|
|
- timeout_usecs -= MC_CMD_COMPLETION_POLLING_MAX_SLEEP_USECS;
|
|
- if (timeout_usecs == 0) {
|
|
- dev_dbg(mc_io->dev,
|
|
- "MC command timed out (portal: %pa, dprc handle: %#x, command: %#x)\n",
|
|
- &mc_io->portal_phys_addr,
|
|
- (unsigned int)mc_cmd_hdr_read_token(cmd),
|
|
- (unsigned int)mc_cmd_hdr_read_cmdid(cmd));
|
|
-
|
|
- return -ETIMEDOUT;
|
|
- }
|
|
- }
|
|
-
|
|
- *mc_status = status;
|
|
- return 0;
|
|
-}
|
|
-
|
|
-/**
|
|
- * Sends a command to the MC device using the given MC I/O object
|
|
- *
|
|
- * @mc_io: MC I/O object to be used
|
|
- * @cmd: command to be sent
|
|
- *
|
|
- * Returns '0' on Success; Error code otherwise.
|
|
- */
|
|
-int mc_send_command(struct fsl_mc_io *mc_io, struct mc_command *cmd)
|
|
-{
|
|
- int error;
|
|
- enum mc_cmd_status status;
|
|
- unsigned long irq_flags = 0;
|
|
-
|
|
- if (WARN_ON(in_irq() &&
|
|
- !(mc_io->flags & FSL_MC_IO_ATOMIC_CONTEXT_PORTAL)))
|
|
- return -EINVAL;
|
|
-
|
|
- if (mc_io->flags & FSL_MC_IO_ATOMIC_CONTEXT_PORTAL)
|
|
- spin_lock_irqsave(&mc_io->spinlock, irq_flags);
|
|
- else
|
|
- mutex_lock(&mc_io->mutex);
|
|
-
|
|
- /*
|
|
- * Send command to the MC hardware:
|
|
- */
|
|
- mc_write_command(mc_io->portal_virt_addr, cmd);
|
|
-
|
|
- /*
|
|
- * Wait for response from the MC hardware:
|
|
- */
|
|
- if (!(mc_io->flags & FSL_MC_IO_ATOMIC_CONTEXT_PORTAL))
|
|
- error = mc_polling_wait_preemptible(mc_io, cmd, &status);
|
|
- else
|
|
- error = mc_polling_wait_atomic(mc_io, cmd, &status);
|
|
-
|
|
- if (error < 0)
|
|
- goto common_exit;
|
|
-
|
|
- if (status != MC_CMD_STATUS_OK) {
|
|
- dev_dbg(mc_io->dev,
|
|
- "MC command failed: portal: %pa, dprc handle: %#x, command: %#x, status: %s (%#x)\n",
|
|
- &mc_io->portal_phys_addr,
|
|
- (unsigned int)mc_cmd_hdr_read_token(cmd),
|
|
- (unsigned int)mc_cmd_hdr_read_cmdid(cmd),
|
|
- mc_status_to_string(status),
|
|
- (unsigned int)status);
|
|
-
|
|
- error = mc_status_to_error(status);
|
|
- goto common_exit;
|
|
- }
|
|
-
|
|
- error = 0;
|
|
-common_exit:
|
|
- if (mc_io->flags & FSL_MC_IO_ATOMIC_CONTEXT_PORTAL)
|
|
- spin_unlock_irqrestore(&mc_io->spinlock, irq_flags);
|
|
- else
|
|
- mutex_unlock(&mc_io->mutex);
|
|
-
|
|
- return error;
|
|
-}
|
|
-EXPORT_SYMBOL(mc_send_command);
|
|
--- /dev/null
|
|
+++ b/drivers/bus/fsl-mc/mc-sys.c
|
|
@@ -0,0 +1,296 @@
|
|
+// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
|
|
+/*
|
|
+ * Copyright 2013-2016 Freescale Semiconductor Inc.
|
|
+ *
|
|
+ * I/O services to send MC commands to the MC hardware
|
|
+ *
|
|
+ */
|
|
+
|
|
+#include <linux/delay.h>
|
|
+#include <linux/slab.h>
|
|
+#include <linux/ioport.h>
|
|
+#include <linux/device.h>
|
|
+#include <linux/io.h>
|
|
+#include <linux/io-64-nonatomic-hi-lo.h>
|
|
+#include <linux/fsl/mc.h>
|
|
+
|
|
+#include "fsl-mc-private.h"
|
|
+
|
|
+/**
|
|
+ * Timeout in milliseconds to wait for the completion of an MC command
|
|
+ */
|
|
+#define MC_CMD_COMPLETION_TIMEOUT_MS 15000
|
|
+
|
|
+/*
|
|
+ * usleep_range() min and max values used to throttle down polling
|
|
+ * iterations while waiting for MC command completion
|
|
+ */
|
|
+#define MC_CMD_COMPLETION_POLLING_MIN_SLEEP_USECS 10
|
|
+#define MC_CMD_COMPLETION_POLLING_MAX_SLEEP_USECS 500
|
|
+
|
|
+static enum mc_cmd_status mc_cmd_hdr_read_status(struct fsl_mc_command *cmd)
|
|
+{
|
|
+ struct mc_cmd_header *hdr = (struct mc_cmd_header *)&cmd->header;
|
|
+
|
|
+ return (enum mc_cmd_status)hdr->status;
|
|
+}
|
|
+
|
|
+static u16 mc_cmd_hdr_read_cmdid(struct fsl_mc_command *cmd)
|
|
+{
|
|
+ struct mc_cmd_header *hdr = (struct mc_cmd_header *)&cmd->header;
|
|
+ u16 cmd_id = le16_to_cpu(hdr->cmd_id);
|
|
+
|
|
+ return cmd_id;
|
|
+}
|
|
+
|
|
+static int mc_status_to_error(enum mc_cmd_status status)
|
|
+{
|
|
+ static const int mc_status_to_error_map[] = {
|
|
+ [MC_CMD_STATUS_OK] = 0,
|
|
+ [MC_CMD_STATUS_AUTH_ERR] = -EACCES,
|
|
+ [MC_CMD_STATUS_NO_PRIVILEGE] = -EPERM,
|
|
+ [MC_CMD_STATUS_DMA_ERR] = -EIO,
|
|
+ [MC_CMD_STATUS_CONFIG_ERR] = -ENXIO,
|
|
+ [MC_CMD_STATUS_TIMEOUT] = -ETIMEDOUT,
|
|
+ [MC_CMD_STATUS_NO_RESOURCE] = -ENAVAIL,
|
|
+ [MC_CMD_STATUS_NO_MEMORY] = -ENOMEM,
|
|
+ [MC_CMD_STATUS_BUSY] = -EBUSY,
|
|
+ [MC_CMD_STATUS_UNSUPPORTED_OP] = -ENOTSUPP,
|
|
+ [MC_CMD_STATUS_INVALID_STATE] = -ENODEV,
|
|
+ };
|
|
+
|
|
+ if ((u32)status >= ARRAY_SIZE(mc_status_to_error_map))
|
|
+ return -EINVAL;
|
|
+
|
|
+ return mc_status_to_error_map[status];
|
|
+}
|
|
+
|
|
+static const char *mc_status_to_string(enum mc_cmd_status status)
|
|
+{
|
|
+ static const char *const status_strings[] = {
|
|
+ [MC_CMD_STATUS_OK] = "Command completed successfully",
|
|
+ [MC_CMD_STATUS_READY] = "Command ready to be processed",
|
|
+ [MC_CMD_STATUS_AUTH_ERR] = "Authentication error",
|
|
+ [MC_CMD_STATUS_NO_PRIVILEGE] = "No privilege",
|
|
+ [MC_CMD_STATUS_DMA_ERR] = "DMA or I/O error",
|
|
+ [MC_CMD_STATUS_CONFIG_ERR] = "Configuration error",
|
|
+ [MC_CMD_STATUS_TIMEOUT] = "Operation timed out",
|
|
+ [MC_CMD_STATUS_NO_RESOURCE] = "No resources",
|
|
+ [MC_CMD_STATUS_NO_MEMORY] = "No memory available",
|
|
+ [MC_CMD_STATUS_BUSY] = "Device is busy",
|
|
+ [MC_CMD_STATUS_UNSUPPORTED_OP] = "Unsupported operation",
|
|
+ [MC_CMD_STATUS_INVALID_STATE] = "Invalid state"
|
|
+ };
|
|
+
|
|
+ if ((unsigned int)status >= ARRAY_SIZE(status_strings))
|
|
+ return "Unknown MC error";
|
|
+
|
|
+ return status_strings[status];
|
|
+}
|
|
+
|
|
+/**
|
|
+ * mc_write_command - writes a command to a Management Complex (MC) portal
|
|
+ *
|
|
+ * @portal: pointer to an MC portal
|
|
+ * @cmd: pointer to a filled command
|
|
+ */
|
|
+static inline void mc_write_command(struct fsl_mc_command __iomem *portal,
|
|
+ struct fsl_mc_command *cmd)
|
|
+{
|
|
+ int i;
|
|
+
|
|
+ /* copy command parameters into the portal */
|
|
+ for (i = 0; i < MC_CMD_NUM_OF_PARAMS; i++)
|
|
+ /*
|
|
+ * Data is already in the expected LE byte-order. Do an
|
|
+ * extra LE -> CPU conversion so that the CPU -> LE done in
|
|
+ * the device io write api puts it back in the right order.
|
|
+ */
|
|
+ writeq_relaxed(le64_to_cpu(cmd->params[i]), &portal->params[i]);
|
|
+
|
|
+ /* submit the command by writing the header */
|
|
+ writeq(le64_to_cpu(cmd->header), &portal->header);
|
|
+}
|
|
+
|
|
+/**
|
|
+ * mc_read_response - reads the response for the last MC command from a
|
|
+ * Management Complex (MC) portal
|
|
+ *
|
|
+ * @portal: pointer to an MC portal
|
|
+ * @resp: pointer to command response buffer
|
|
+ *
|
|
+ * Returns MC_CMD_STATUS_OK on Success; Error code otherwise.
|
|
+ */
|
|
+static inline enum mc_cmd_status mc_read_response(struct fsl_mc_command __iomem
|
|
+ *portal,
|
|
+ struct fsl_mc_command *resp)
|
|
+{
|
|
+ int i;
|
|
+ enum mc_cmd_status status;
|
|
+
|
|
+ /* Copy command response header from MC portal: */
|
|
+ resp->header = cpu_to_le64(readq_relaxed(&portal->header));
|
|
+ status = mc_cmd_hdr_read_status(resp);
|
|
+ if (status != MC_CMD_STATUS_OK)
|
|
+ return status;
|
|
+
|
|
+ /* Copy command response data from MC portal: */
|
|
+ for (i = 0; i < MC_CMD_NUM_OF_PARAMS; i++)
|
|
+ /*
|
|
+ * Data is expected to be in LE byte-order. Do an
|
|
+ * extra CPU -> LE to revert the LE -> CPU done in
|
|
+ * the device io read api.
|
|
+ */
|
|
+ resp->params[i] =
|
|
+ cpu_to_le64(readq_relaxed(&portal->params[i]));
|
|
+
|
|
+ return status;
|
|
+}
|
|
+
|
|
+/**
|
|
+ * Waits for the completion of an MC command doing preemptible polling.
|
|
+ * uslepp_range() is called between polling iterations.
|
|
+ *
|
|
+ * @mc_io: MC I/O object to be used
|
|
+ * @cmd: command buffer to receive MC response
|
|
+ * @mc_status: MC command completion status
|
|
+ */
|
|
+static int mc_polling_wait_preemptible(struct fsl_mc_io *mc_io,
|
|
+ struct fsl_mc_command *cmd,
|
|
+ enum mc_cmd_status *mc_status)
|
|
+{
|
|
+ enum mc_cmd_status status;
|
|
+ unsigned long jiffies_until_timeout =
|
|
+ jiffies + msecs_to_jiffies(MC_CMD_COMPLETION_TIMEOUT_MS);
|
|
+
|
|
+ /*
|
|
+ * Wait for response from the MC hardware:
|
|
+ */
|
|
+ for (;;) {
|
|
+ status = mc_read_response(mc_io->portal_virt_addr, cmd);
|
|
+ if (status != MC_CMD_STATUS_READY)
|
|
+ break;
|
|
+
|
|
+ /*
|
|
+ * TODO: When MC command completion interrupts are supported
|
|
+ * call wait function here instead of usleep_range()
|
|
+ */
|
|
+ usleep_range(MC_CMD_COMPLETION_POLLING_MIN_SLEEP_USECS,
|
|
+ MC_CMD_COMPLETION_POLLING_MAX_SLEEP_USECS);
|
|
+
|
|
+ if (time_after_eq(jiffies, jiffies_until_timeout)) {
|
|
+ dev_dbg(mc_io->dev,
|
|
+ "MC command timed out (portal: %pa, dprc handle: %#x, command: %#x)\n",
|
|
+ &mc_io->portal_phys_addr,
|
|
+ (unsigned int)mc_cmd_hdr_read_token(cmd),
|
|
+ (unsigned int)mc_cmd_hdr_read_cmdid(cmd));
|
|
+
|
|
+ return -ETIMEDOUT;
|
|
+ }
|
|
+ }
|
|
+
|
|
+ *mc_status = status;
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+/**
|
|
+ * Waits for the completion of an MC command doing atomic polling.
|
|
+ * udelay() is called between polling iterations.
|
|
+ *
|
|
+ * @mc_io: MC I/O object to be used
|
|
+ * @cmd: command buffer to receive MC response
|
|
+ * @mc_status: MC command completion status
|
|
+ */
|
|
+static int mc_polling_wait_atomic(struct fsl_mc_io *mc_io,
|
|
+ struct fsl_mc_command *cmd,
|
|
+ enum mc_cmd_status *mc_status)
|
|
+{
|
|
+ enum mc_cmd_status status;
|
|
+ unsigned long timeout_usecs = MC_CMD_COMPLETION_TIMEOUT_MS * 1000;
|
|
+
|
|
+ BUILD_BUG_ON((MC_CMD_COMPLETION_TIMEOUT_MS * 1000) %
|
|
+ MC_CMD_COMPLETION_POLLING_MAX_SLEEP_USECS != 0);
|
|
+
|
|
+ for (;;) {
|
|
+ status = mc_read_response(mc_io->portal_virt_addr, cmd);
|
|
+ if (status != MC_CMD_STATUS_READY)
|
|
+ break;
|
|
+
|
|
+ udelay(MC_CMD_COMPLETION_POLLING_MAX_SLEEP_USECS);
|
|
+ timeout_usecs -= MC_CMD_COMPLETION_POLLING_MAX_SLEEP_USECS;
|
|
+ if (timeout_usecs == 0) {
|
|
+ dev_dbg(mc_io->dev,
|
|
+ "MC command timed out (portal: %pa, dprc handle: %#x, command: %#x)\n",
|
|
+ &mc_io->portal_phys_addr,
|
|
+ (unsigned int)mc_cmd_hdr_read_token(cmd),
|
|
+ (unsigned int)mc_cmd_hdr_read_cmdid(cmd));
|
|
+
|
|
+ return -ETIMEDOUT;
|
|
+ }
|
|
+ }
|
|
+
|
|
+ *mc_status = status;
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+/**
|
|
+ * Sends a command to the MC device using the given MC I/O object
|
|
+ *
|
|
+ * @mc_io: MC I/O object to be used
|
|
+ * @cmd: command to be sent
|
|
+ *
|
|
+ * Returns '0' on Success; Error code otherwise.
|
|
+ */
|
|
+int mc_send_command(struct fsl_mc_io *mc_io, struct fsl_mc_command *cmd)
|
|
+{
|
|
+ int error;
|
|
+ enum mc_cmd_status status;
|
|
+ unsigned long irq_flags = 0;
|
|
+
|
|
+ if (in_irq() && !(mc_io->flags & FSL_MC_IO_ATOMIC_CONTEXT_PORTAL))
|
|
+ return -EINVAL;
|
|
+
|
|
+ if (mc_io->flags & FSL_MC_IO_ATOMIC_CONTEXT_PORTAL)
|
|
+ spin_lock_irqsave(&mc_io->spinlock, irq_flags);
|
|
+ else
|
|
+ mutex_lock(&mc_io->mutex);
|
|
+
|
|
+ /*
|
|
+ * Send command to the MC hardware:
|
|
+ */
|
|
+ mc_write_command(mc_io->portal_virt_addr, cmd);
|
|
+
|
|
+ /*
|
|
+ * Wait for response from the MC hardware:
|
|
+ */
|
|
+ if (!(mc_io->flags & FSL_MC_IO_ATOMIC_CONTEXT_PORTAL))
|
|
+ error = mc_polling_wait_preemptible(mc_io, cmd, &status);
|
|
+ else
|
|
+ error = mc_polling_wait_atomic(mc_io, cmd, &status);
|
|
+
|
|
+ if (error < 0)
|
|
+ goto common_exit;
|
|
+
|
|
+ if (status != MC_CMD_STATUS_OK) {
|
|
+ dev_dbg(mc_io->dev,
|
|
+ "MC command failed: portal: %pa, dprc handle: %#x, command: %#x, status: %s (%#x)\n",
|
|
+ &mc_io->portal_phys_addr,
|
|
+ (unsigned int)mc_cmd_hdr_read_token(cmd),
|
|
+ (unsigned int)mc_cmd_hdr_read_cmdid(cmd),
|
|
+ mc_status_to_string(status),
|
|
+ (unsigned int)status);
|
|
+
|
|
+ error = mc_status_to_error(status);
|
|
+ goto common_exit;
|
|
+ }
|
|
+
|
|
+ error = 0;
|
|
+common_exit:
|
|
+ if (mc_io->flags & FSL_MC_IO_ATOMIC_CONTEXT_PORTAL)
|
|
+ spin_unlock_irqrestore(&mc_io->spinlock, irq_flags);
|
|
+ else
|
|
+ mutex_unlock(&mc_io->mutex);
|
|
+
|
|
+ return error;
|
|
+}
|
|
+EXPORT_SYMBOL_GPL(mc_send_command);
|
|
--- a/drivers/irqchip/Kconfig
|
|
+++ b/drivers/irqchip/Kconfig
|
|
@@ -42,6 +42,12 @@ config ARM_GIC_V3_ITS
|
|
depends on PCI
|
|
depends on PCI_MSI
|
|
|
|
+config ARM_GIC_V3_ITS_FSL_MC
|
|
+ bool
|
|
+ depends on ARM_GIC_V3_ITS
|
|
+ depends on FSL_MC_BUS
|
|
+ default ARM_GIC_V3_ITS
|
|
+
|
|
config ARM_NVIC
|
|
bool
|
|
select IRQ_DOMAIN
|
|
--- a/drivers/irqchip/Makefile
|
|
+++ b/drivers/irqchip/Makefile
|
|
@@ -30,6 +30,7 @@ obj-$(CONFIG_ARCH_REALVIEW) += irq-gic-
|
|
obj-$(CONFIG_ARM_GIC_V2M) += irq-gic-v2m.o
|
|
obj-$(CONFIG_ARM_GIC_V3) += irq-gic-v3.o irq-gic-common.o
|
|
obj-$(CONFIG_ARM_GIC_V3_ITS) += irq-gic-v3-its.o irq-gic-v3-its-pci-msi.o irq-gic-v3-its-platform-msi.o irq-gic-v4.o
|
|
+obj-$(CONFIG_ARM_GIC_V3_ITS_FSL_MC) += irq-gic-v3-its-fsl-mc-msi.o
|
|
obj-$(CONFIG_PARTITION_PERCPU) += irq-partition-percpu.o
|
|
obj-$(CONFIG_HISILICON_IRQ_MBIGEN) += irq-mbigen.o
|
|
obj-$(CONFIG_ARM_NVIC) += irq-nvic.o
|
|
--- /dev/null
|
|
+++ b/drivers/irqchip/irq-gic-v3-its-fsl-mc-msi.c
|
|
@@ -0,0 +1,98 @@
|
|
+// SPDX-License-Identifier: GPL-2.0
|
|
+/*
|
|
+ * Freescale Management Complex (MC) bus driver MSI support
|
|
+ *
|
|
+ * Copyright (C) 2015-2016 Freescale Semiconductor, Inc.
|
|
+ * Author: German Rivera <German.Rivera@freescale.com>
|
|
+ *
|
|
+ */
|
|
+
|
|
+#include <linux/of_device.h>
|
|
+#include <linux/of_address.h>
|
|
+#include <linux/irq.h>
|
|
+#include <linux/msi.h>
|
|
+#include <linux/of.h>
|
|
+#include <linux/of_irq.h>
|
|
+#include <linux/fsl/mc.h>
|
|
+
|
|
+static struct irq_chip its_msi_irq_chip = {
|
|
+ .name = "ITS-fMSI",
|
|
+ .irq_mask = irq_chip_mask_parent,
|
|
+ .irq_unmask = irq_chip_unmask_parent,
|
|
+ .irq_eoi = irq_chip_eoi_parent,
|
|
+ .irq_set_affinity = msi_domain_set_affinity
|
|
+};
|
|
+
|
|
+static int its_fsl_mc_msi_prepare(struct irq_domain *msi_domain,
|
|
+ struct device *dev,
|
|
+ int nvec, msi_alloc_info_t *info)
|
|
+{
|
|
+ struct fsl_mc_device *mc_bus_dev;
|
|
+ struct msi_domain_info *msi_info;
|
|
+
|
|
+ if (!dev_is_fsl_mc(dev))
|
|
+ return -EINVAL;
|
|
+
|
|
+ mc_bus_dev = to_fsl_mc_device(dev);
|
|
+ if (!(mc_bus_dev->flags & FSL_MC_IS_DPRC))
|
|
+ return -EINVAL;
|
|
+
|
|
+ /*
|
|
+ * Set the device Id to be passed to the GIC-ITS:
|
|
+ *
|
|
+ * NOTE: This device id corresponds to the IOMMU stream ID
|
|
+ * associated with the DPRC object (ICID).
|
|
+ */
|
|
+ info->scratchpad[0].ul = mc_bus_dev->icid;
|
|
+ msi_info = msi_get_domain_info(msi_domain->parent);
|
|
+ return msi_info->ops->msi_prepare(msi_domain->parent, dev, nvec, info);
|
|
+}
|
|
+
|
|
+static struct msi_domain_ops its_fsl_mc_msi_ops __ro_after_init = {
|
|
+ .msi_prepare = its_fsl_mc_msi_prepare,
|
|
+};
|
|
+
|
|
+static struct msi_domain_info its_fsl_mc_msi_domain_info = {
|
|
+ .flags = (MSI_FLAG_USE_DEF_DOM_OPS | MSI_FLAG_USE_DEF_CHIP_OPS),
|
|
+ .ops = &its_fsl_mc_msi_ops,
|
|
+ .chip = &its_msi_irq_chip,
|
|
+};
|
|
+
|
|
+static const struct of_device_id its_device_id[] = {
|
|
+ { .compatible = "arm,gic-v3-its", },
|
|
+ {},
|
|
+};
|
|
+
|
|
+static int __init its_fsl_mc_msi_init(void)
|
|
+{
|
|
+ struct device_node *np;
|
|
+ struct irq_domain *parent;
|
|
+ struct irq_domain *mc_msi_domain;
|
|
+
|
|
+ for (np = of_find_matching_node(NULL, its_device_id); np;
|
|
+ np = of_find_matching_node(np, its_device_id)) {
|
|
+ if (!of_property_read_bool(np, "msi-controller"))
|
|
+ continue;
|
|
+
|
|
+ parent = irq_find_matching_host(np, DOMAIN_BUS_NEXUS);
|
|
+ if (!parent || !msi_get_domain_info(parent)) {
|
|
+ pr_err("%pOF: unable to locate ITS domain\n", np);
|
|
+ continue;
|
|
+ }
|
|
+
|
|
+ mc_msi_domain = fsl_mc_msi_create_irq_domain(
|
|
+ of_node_to_fwnode(np),
|
|
+ &its_fsl_mc_msi_domain_info,
|
|
+ parent);
|
|
+ if (!mc_msi_domain) {
|
|
+ pr_err("%pOF: unable to create fsl-mc domain\n", np);
|
|
+ continue;
|
|
+ }
|
|
+
|
|
+ pr_info("fsl-mc MSI: %pOF domain created\n", np);
|
|
+ }
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+early_initcall(its_fsl_mc_msi_init);
|
|
--- a/drivers/staging/fsl-dpaa2/ethernet/README
|
|
+++ b/drivers/staging/fsl-dpaa2/ethernet/README
|
|
@@ -36,7 +36,7 @@ are treated as internal resources of oth
|
|
|
|
For a more detailed description of the DPAA2 architecture and its object
|
|
abstractions see:
|
|
- drivers/staging/fsl-mc/README.txt
|
|
+ Documentation/networking/dpaa2/overview.rst
|
|
|
|
Each Linux net device is built on top of a Datapath Network Interface (DPNI)
|
|
object and uses Buffer Pools (DPBPs), I/O Portals (DPIOs) and Concentrators
|
|
--- a/drivers/staging/fsl-dpaa2/ethernet/dpaa2-eth.c
|
|
+++ b/drivers/staging/fsl-dpaa2/ethernet/dpaa2-eth.c
|
|
@@ -43,7 +43,7 @@
|
|
#include <linux/filter.h>
|
|
#include <linux/atomic.h>
|
|
#include <net/sock.h>
|
|
-#include "../../fsl-mc/include/mc.h"
|
|
+#include <linux/fsl/mc.h>
|
|
#include "dpaa2-eth.h"
|
|
#include "dpaa2-eth-ceetm.h"
|
|
|
|
--- a/drivers/staging/fsl-dpaa2/ethernet/dpaa2-eth.h
|
|
+++ b/drivers/staging/fsl-dpaa2/ethernet/dpaa2-eth.h
|
|
@@ -36,11 +36,10 @@
|
|
#include <linux/dcbnl.h>
|
|
#include <linux/netdevice.h>
|
|
#include <linux/if_vlan.h>
|
|
+#include <linux/fsl/mc.h>
|
|
|
|
#include "../../fsl-mc/include/dpaa2-io.h"
|
|
#include "../../fsl-mc/include/dpaa2-fd.h"
|
|
-#include "../../fsl-mc/include/dpbp.h"
|
|
-#include "../../fsl-mc/include/dpcon.h"
|
|
#include "dpni.h"
|
|
#include "dpni-cmd.h"
|
|
|
|
--- a/drivers/staging/fsl-dpaa2/ethernet/dpni.c
|
|
+++ b/drivers/staging/fsl-dpaa2/ethernet/dpni.c
|
|
@@ -32,7 +32,7 @@
|
|
*/
|
|
#include <linux/kernel.h>
|
|
#include <linux/errno.h>
|
|
-#include "../../fsl-mc/include/mc.h"
|
|
+#include <linux/fsl/mc.h>
|
|
#include "dpni.h"
|
|
#include "dpni-cmd.h"
|
|
|
|
--- a/drivers/staging/fsl-mc/TODO
|
|
+++ /dev/null
|
|
@@ -1,18 +0,0 @@
|
|
-* Add at least one device driver for a DPAA2 object (child device of the
|
|
- fsl-mc bus). Most likely candidate for this is adding DPAA2 Ethernet
|
|
- driver support, which depends on drivers for several objects: DPNI,
|
|
- DPIO, DPMAC. Other pre-requisites include:
|
|
-
|
|
- * MC firmware uprev. The MC firmware upon which the fsl-mc
|
|
- bus driver and DPAA2 object drivers are based is continuing
|
|
- to evolve, so minor updates are needed to keep in sync with binary
|
|
- interface changes to the MC.
|
|
-
|
|
-* Cleanup
|
|
-
|
|
-Please send any patches to Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
|
|
-german.rivera@freescale.com, devel@driverdev.osuosl.org,
|
|
-linux-kernel@vger.kernel.org
|
|
-
|
|
-[1] https://lkml.org/lkml/2015/7/9/93
|
|
-[2] https://lkml.org/lkml/2015/7/7/712
|
|
--- a/drivers/staging/fsl-mc/bus/Kconfig
|
|
+++ b/drivers/staging/fsl-mc/bus/Kconfig
|
|
@@ -5,16 +5,6 @@
|
|
# Copyright (C) 2014-2016 Freescale Semiconductor, Inc.
|
|
#
|
|
|
|
-config FSL_MC_BUS
|
|
- bool "QorIQ DPAA2 fsl-mc bus driver"
|
|
- depends on OF && (ARCH_LAYERSCAPE || (COMPILE_TEST && (ARM || ARM64 || X86_LOCAL_APIC || PPC)))
|
|
- select GENERIC_MSI_IRQ_DOMAIN
|
|
- help
|
|
- Driver to enable the bus infrastructure for the QorIQ DPAA2
|
|
- architecture. The fsl-mc bus driver handles discovery of
|
|
- DPAA2 objects (which are represented as Linux devices) and
|
|
- binding objects to drivers.
|
|
-
|
|
config FSL_MC_DPIO
|
|
tristate "QorIQ DPAA2 DPIO driver"
|
|
depends on FSL_MC_BUS
|
|
@@ -24,3 +14,9 @@ config FSL_MC_DPIO
|
|
other DPAA2 objects. This driver does not expose the DPIO
|
|
objects individually, but groups them under a service layer
|
|
API.
|
|
+
|
|
+config FSL_QBMAN_DEBUG
|
|
+ tristate "Freescale QBMAN Debug APIs"
|
|
+ depends on FSL_MC_DPIO
|
|
+ help
|
|
+ QBMan debug assistant APIs.
|
|
--- a/drivers/staging/fsl-mc/bus/Makefile
|
|
+++ b/drivers/staging/fsl-mc/bus/Makefile
|
|
@@ -4,19 +4,6 @@
|
|
#
|
|
# Copyright (C) 2014 Freescale Semiconductor, Inc.
|
|
#
|
|
-obj-$(CONFIG_FSL_MC_BUS) += mc-bus-driver.o
|
|
-
|
|
-mc-bus-driver-objs := fsl-mc-bus.o \
|
|
- mc-sys.o \
|
|
- mc-io.o \
|
|
- dprc.o \
|
|
- dprc-driver.o \
|
|
- fsl-mc-allocator.o \
|
|
- fsl-mc-msi.o \
|
|
- irq-gic-v3-its-fsl-mc-msi.o \
|
|
- dpmcp.o \
|
|
- dpbp.o \
|
|
- dpcon.o
|
|
|
|
# MC DPIO driver
|
|
obj-$(CONFIG_FSL_MC_DPIO) += dpio/
|
|
--- a/drivers/staging/fsl-mc/bus/dpio/dpio-driver.c
|
|
+++ b/drivers/staging/fsl-mc/bus/dpio/dpio-driver.c
|
|
@@ -14,7 +14,7 @@
|
|
#include <linux/dma-mapping.h>
|
|
#include <linux/delay.h>
|
|
|
|
-#include "../../include/mc.h"
|
|
+#include <linux/fsl/mc.h>
|
|
#include "../../include/dpaa2-io.h"
|
|
|
|
#include "qbman-portal.h"
|
|
--- a/drivers/staging/fsl-mc/bus/dpio/dpio-service.c
|
|
+++ b/drivers/staging/fsl-mc/bus/dpio/dpio-service.c
|
|
@@ -5,7 +5,7 @@
|
|
*
|
|
*/
|
|
#include <linux/types.h>
|
|
-#include "../../include/mc.h"
|
|
+#include <linux/fsl/mc.h>
|
|
#include "../../include/dpaa2-io.h"
|
|
#include <linux/init.h>
|
|
#include <linux/module.h>
|
|
--- a/drivers/staging/fsl-mc/bus/dpio/dpio.c
|
|
+++ b/drivers/staging/fsl-mc/bus/dpio/dpio.c
|
|
@@ -5,7 +5,7 @@
|
|
*
|
|
*/
|
|
#include <linux/kernel.h>
|
|
-#include "../../include/mc.h"
|
|
+#include <linux/fsl/mc.h>
|
|
|
|
#include "dpio.h"
|
|
#include "dpio-cmd.h"
|
|
@@ -37,7 +37,7 @@ int dpio_open(struct fsl_mc_io *mc_io,
|
|
int dpio_id,
|
|
u16 *token)
|
|
{
|
|
- struct mc_command cmd = { 0 };
|
|
+ struct fsl_mc_command cmd = { 0 };
|
|
struct dpio_cmd_open *dpio_cmd;
|
|
int err;
|
|
|
|
@@ -70,7 +70,7 @@ int dpio_close(struct fsl_mc_io *mc_io,
|
|
u32 cmd_flags,
|
|
u16 token)
|
|
{
|
|
- struct mc_command cmd = { 0 };
|
|
+ struct fsl_mc_command cmd = { 0 };
|
|
|
|
/* prepare command */
|
|
cmd.header = mc_encode_cmd_header(DPIO_CMDID_CLOSE,
|
|
@@ -92,7 +92,7 @@ int dpio_enable(struct fsl_mc_io *mc_io,
|
|
u32 cmd_flags,
|
|
u16 token)
|
|
{
|
|
- struct mc_command cmd = { 0 };
|
|
+ struct fsl_mc_command cmd = { 0 };
|
|
|
|
/* prepare command */
|
|
cmd.header = mc_encode_cmd_header(DPIO_CMDID_ENABLE,
|
|
@@ -114,7 +114,7 @@ int dpio_disable(struct fsl_mc_io *mc_io
|
|
u32 cmd_flags,
|
|
u16 token)
|
|
{
|
|
- struct mc_command cmd = { 0 };
|
|
+ struct fsl_mc_command cmd = { 0 };
|
|
|
|
/* prepare command */
|
|
cmd.header = mc_encode_cmd_header(DPIO_CMDID_DISABLE,
|
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@@ -138,7 +138,7 @@ int dpio_get_attributes(struct fsl_mc_io
|
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u16 token,
|
|
struct dpio_attr *attr)
|
|
{
|
|
- struct mc_command cmd = { 0 };
|
|
+ struct fsl_mc_command cmd = { 0 };
|
|
struct dpio_rsp_get_attr *dpio_rsp;
|
|
int err;
|
|
|
|
@@ -180,7 +180,7 @@ int dpio_get_api_version(struct fsl_mc_i
|
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u16 *major_ver,
|
|
u16 *minor_ver)
|
|
{
|
|
- struct mc_command cmd = { 0 };
|
|
+ struct fsl_mc_command cmd = { 0 };
|
|
int err;
|
|
|
|
/* prepare command */
|
|
--- a/drivers/staging/fsl-mc/bus/dpmcp-cmd.h
|
|
+++ /dev/null
|
|
@@ -1,56 +0,0 @@
|
|
-/*
|
|
- * Copyright 2013-2016 Freescale Semiconductor Inc.
|
|
- *
|
|
- * Redistribution and use in source and binary forms, with or without
|
|
- * modification, are permitted provided that the following conditions are met:
|
|
- * * Redistributions of source code must retain the above copyright
|
|
- * notice, this list of conditions and the following disclaimer.
|
|
- * * Redistributions in binary form must reproduce the above copyright
|
|
- * notice, this list of conditions and the following disclaimer in the
|
|
- * documentation and/or other materials provided with the distribution.
|
|
- * * Neither the name of the above-listed copyright holders nor the
|
|
- * names of any contributors may be used to endorse or promote products
|
|
- * derived from this software without specific prior written permission.
|
|
- *
|
|
- * ALTERNATIVELY, this software may be distributed under the terms of the
|
|
- * GNU General Public License ("GPL") as published by the Free Software
|
|
- * Foundation, either version 2 of that License or (at your option) any
|
|
- * later version.
|
|
- *
|
|
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
- * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
|
|
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
- * POSSIBILITY OF SUCH DAMAGE.
|
|
- */
|
|
-#ifndef _FSL_DPMCP_CMD_H
|
|
-#define _FSL_DPMCP_CMD_H
|
|
-
|
|
-/* Minimal supported DPMCP Version */
|
|
-#define DPMCP_MIN_VER_MAJOR 3
|
|
-#define DPMCP_MIN_VER_MINOR 0
|
|
-
|
|
-/* Command versioning */
|
|
-#define DPMCP_CMD_BASE_VERSION 1
|
|
-#define DPMCP_CMD_ID_OFFSET 4
|
|
-
|
|
-#define DPMCP_CMD(id) (((id) << DPMCP_CMD_ID_OFFSET) | DPMCP_CMD_BASE_VERSION)
|
|
-
|
|
-/* Command IDs */
|
|
-#define DPMCP_CMDID_CLOSE DPMCP_CMD(0x800)
|
|
-#define DPMCP_CMDID_OPEN DPMCP_CMD(0x80b)
|
|
-#define DPMCP_CMDID_GET_API_VERSION DPMCP_CMD(0xa0b)
|
|
-
|
|
-#define DPMCP_CMDID_RESET DPMCP_CMD(0x005)
|
|
-
|
|
-struct dpmcp_cmd_open {
|
|
- __le32 dpmcp_id;
|
|
-};
|
|
-
|
|
-#endif /* _FSL_DPMCP_CMD_H */
|
|
--- a/drivers/staging/fsl-mc/bus/dpmcp.h
|
|
+++ /dev/null
|
|
@@ -1,60 +0,0 @@
|
|
-/*
|
|
- * Copyright 2013-2016 Freescale Semiconductor Inc.
|
|
- *
|
|
- * Redistribution and use in source and binary forms, with or without
|
|
- * modification, are permitted provided that the following conditions are met:
|
|
- * * Redistributions of source code must retain the above copyright
|
|
- * notice, this list of conditions and the following disclaimer.
|
|
- * * Redistributions in binary form must reproduce the above copyright
|
|
- * notice, this list of conditions and the following disclaimer in the
|
|
- * documentation and/or other materials provided with the distribution.
|
|
- * * Neither the name of the above-listed copyright holders nor the
|
|
- * names of any contributors may be used to endorse or promote products
|
|
- * derived from this software without specific prior written permission.
|
|
- *
|
|
- * ALTERNATIVELY, this software may be distributed under the terms of the
|
|
- * GNU General Public License ("GPL") as published by the Free Software
|
|
- * Foundation, either version 2 of that License or (at your option) any
|
|
- * later version.
|
|
- *
|
|
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
- * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
|
|
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
- * POSSIBILITY OF SUCH DAMAGE.
|
|
- */
|
|
-#ifndef __FSL_DPMCP_H
|
|
-#define __FSL_DPMCP_H
|
|
-
|
|
-/*
|
|
- * Data Path Management Command Portal API
|
|
- * Contains initialization APIs and runtime control APIs for DPMCP
|
|
- */
|
|
-
|
|
-struct fsl_mc_io;
|
|
-
|
|
-int dpmcp_open(struct fsl_mc_io *mc_io,
|
|
- u32 cmd_flags,
|
|
- int dpmcp_id,
|
|
- u16 *token);
|
|
-
|
|
-int dpmcp_close(struct fsl_mc_io *mc_io,
|
|
- u32 cmd_flags,
|
|
- u16 token);
|
|
-
|
|
-int dpmcp_get_api_version(struct fsl_mc_io *mc_io,
|
|
- u32 cmd_flags,
|
|
- u16 *major_ver,
|
|
- u16 *minor_ver);
|
|
-
|
|
-int dpmcp_reset(struct fsl_mc_io *mc_io,
|
|
- u32 cmd_flags,
|
|
- u16 token);
|
|
-
|
|
-#endif /* __FSL_DPMCP_H */
|
|
--- a/drivers/staging/fsl-mc/bus/dpmng-cmd.h
|
|
+++ /dev/null
|
|
@@ -1,58 +0,0 @@
|
|
-/*
|
|
- * Copyright 2013-2016 Freescale Semiconductor Inc.
|
|
- *
|
|
- * Redistribution and use in source and binary forms, with or without
|
|
- * modification, are permitted provided that the following conditions are met:
|
|
- * * Redistributions of source code must retain the above copyright
|
|
- * notice, this list of conditions and the following disclaimer.
|
|
- * * Redistributions in binary form must reproduce the above copyright
|
|
- * notice, this list of conditions and the following disclaimer in the
|
|
- * documentation and/or other materials provided with the distribution.
|
|
- * * Neither the name of the above-listed copyright holders nor the
|
|
- * names of any contributors may be used to endorse or promote products
|
|
- * derived from this software without specific prior written permission.
|
|
- *
|
|
- * ALTERNATIVELY, this software may be distributed under the terms of the
|
|
- * GNU General Public License ("GPL") as published by the Free Software
|
|
- * Foundation, either version 2 of that License or (at your option) any
|
|
- * later version.
|
|
- *
|
|
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
- * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
|
|
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
- * POSSIBILITY OF SUCH DAMAGE.
|
|
- */
|
|
-
|
|
-/*
|
|
- * dpmng-cmd.h
|
|
- *
|
|
- * defines portal commands
|
|
- *
|
|
- */
|
|
-
|
|
-#ifndef __FSL_DPMNG_CMD_H
|
|
-#define __FSL_DPMNG_CMD_H
|
|
-
|
|
-/* Command versioning */
|
|
-#define DPMNG_CMD_BASE_VERSION 1
|
|
-#define DPMNG_CMD_ID_OFFSET 4
|
|
-
|
|
-#define DPMNG_CMD(id) (((id) << DPMNG_CMD_ID_OFFSET) | DPMNG_CMD_BASE_VERSION)
|
|
-
|
|
-/* Command IDs */
|
|
-#define DPMNG_CMDID_GET_VERSION DPMNG_CMD(0x831)
|
|
-
|
|
-struct dpmng_rsp_get_version {
|
|
- __le32 revision;
|
|
- __le32 version_major;
|
|
- __le32 version_minor;
|
|
-};
|
|
-
|
|
-#endif /* __FSL_DPMNG_CMD_H */
|
|
--- a/drivers/staging/fsl-mc/bus/dprc-cmd.h
|
|
+++ /dev/null
|
|
@@ -1,451 +0,0 @@
|
|
-/*
|
|
- * Copyright 2013-2016 Freescale Semiconductor Inc.
|
|
- *
|
|
- * Redistribution and use in source and binary forms, with or without
|
|
- * modification, are permitted provided that the following conditions are met:
|
|
- * * Redistributions of source code must retain the above copyright
|
|
- * notice, this list of conditions and the following disclaimer.
|
|
- * * Redistributions in binary form must reproduce the above copyright
|
|
- * notice, this list of conditions and the following disclaimer in the
|
|
- * documentation and/or other materials provided with the distribution.
|
|
- * * Neither the name of the above-listed copyright holders nor the
|
|
- * names of any contributors may be used to endorse or promote products
|
|
- * derived from this software without specific prior written permission.
|
|
- *
|
|
- * ALTERNATIVELY, this software may be distributed under the terms of the
|
|
- * GNU General Public License ("GPL") as published by the Free Software
|
|
- * Foundation, either version 2 of that License or (at your option) any
|
|
- * later version.
|
|
- *
|
|
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
- * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
|
|
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
- * POSSIBILITY OF SUCH DAMAGE.
|
|
- */
|
|
-
|
|
-/*
|
|
- * dprc-cmd.h
|
|
- *
|
|
- * defines dprc portal commands
|
|
- *
|
|
- */
|
|
-
|
|
-#ifndef _FSL_DPRC_CMD_H
|
|
-#define _FSL_DPRC_CMD_H
|
|
-
|
|
-/* Minimal supported DPRC Version */
|
|
-#define DPRC_MIN_VER_MAJOR 6
|
|
-#define DPRC_MIN_VER_MINOR 0
|
|
-
|
|
-/* Command versioning */
|
|
-#define DPRC_CMD_BASE_VERSION 1
|
|
-#define DPRC_CMD_ID_OFFSET 4
|
|
-
|
|
-#define DPRC_CMD(id) (((id) << DPRC_CMD_ID_OFFSET) | DPRC_CMD_BASE_VERSION)
|
|
-
|
|
-/* Command IDs */
|
|
-#define DPRC_CMDID_CLOSE DPRC_CMD(0x800)
|
|
-#define DPRC_CMDID_OPEN DPRC_CMD(0x805)
|
|
-#define DPRC_CMDID_GET_API_VERSION DPRC_CMD(0xa05)
|
|
-
|
|
-#define DPRC_CMDID_GET_ATTR DPRC_CMD(0x004)
|
|
-
|
|
-#define DPRC_CMDID_SET_IRQ DPRC_CMD(0x010)
|
|
-#define DPRC_CMDID_GET_IRQ DPRC_CMD(0x011)
|
|
-#define DPRC_CMDID_SET_IRQ_ENABLE DPRC_CMD(0x012)
|
|
-#define DPRC_CMDID_GET_IRQ_ENABLE DPRC_CMD(0x013)
|
|
-#define DPRC_CMDID_SET_IRQ_MASK DPRC_CMD(0x014)
|
|
-#define DPRC_CMDID_GET_IRQ_MASK DPRC_CMD(0x015)
|
|
-#define DPRC_CMDID_GET_IRQ_STATUS DPRC_CMD(0x016)
|
|
-#define DPRC_CMDID_CLEAR_IRQ_STATUS DPRC_CMD(0x017)
|
|
-
|
|
-#define DPRC_CMDID_GET_CONT_ID DPRC_CMD(0x830)
|
|
-#define DPRC_CMDID_GET_OBJ_COUNT DPRC_CMD(0x159)
|
|
-#define DPRC_CMDID_GET_OBJ DPRC_CMD(0x15A)
|
|
-#define DPRC_CMDID_GET_RES_COUNT DPRC_CMD(0x15B)
|
|
-#define DPRC_CMDID_GET_OBJ_REG DPRC_CMD(0x15E)
|
|
-#define DPRC_CMDID_SET_OBJ_IRQ DPRC_CMD(0x15F)
|
|
-#define DPRC_CMDID_GET_OBJ_IRQ DPRC_CMD(0x160)
|
|
-
|
|
-struct dprc_cmd_open {
|
|
- __le32 container_id;
|
|
-};
|
|
-
|
|
-struct dprc_cmd_create_container {
|
|
- /* cmd word 0 */
|
|
- __le32 options;
|
|
- __le16 icid;
|
|
- __le16 pad0;
|
|
- /* cmd word 1 */
|
|
- __le32 pad1;
|
|
- __le32 portal_id;
|
|
- /* cmd words 2-3 */
|
|
- u8 label[16];
|
|
-};
|
|
-
|
|
-struct dprc_rsp_create_container {
|
|
- /* response word 0 */
|
|
- __le64 pad0;
|
|
- /* response word 1 */
|
|
- __le32 child_container_id;
|
|
- __le32 pad1;
|
|
- /* response word 2 */
|
|
- __le64 child_portal_addr;
|
|
-};
|
|
-
|
|
-struct dprc_cmd_destroy_container {
|
|
- __le32 child_container_id;
|
|
-};
|
|
-
|
|
-struct dprc_cmd_reset_container {
|
|
- __le32 child_container_id;
|
|
-};
|
|
-
|
|
-struct dprc_cmd_set_irq {
|
|
- /* cmd word 0 */
|
|
- __le32 irq_val;
|
|
- u8 irq_index;
|
|
- u8 pad[3];
|
|
- /* cmd word 1 */
|
|
- __le64 irq_addr;
|
|
- /* cmd word 2 */
|
|
- __le32 irq_num;
|
|
-};
|
|
-
|
|
-struct dprc_cmd_get_irq {
|
|
- __le32 pad;
|
|
- u8 irq_index;
|
|
-};
|
|
-
|
|
-struct dprc_rsp_get_irq {
|
|
- /* response word 0 */
|
|
- __le32 irq_val;
|
|
- __le32 pad;
|
|
- /* response word 1 */
|
|
- __le64 irq_addr;
|
|
- /* response word 2 */
|
|
- __le32 irq_num;
|
|
- __le32 type;
|
|
-};
|
|
-
|
|
-#define DPRC_ENABLE 0x1
|
|
-
|
|
-struct dprc_cmd_set_irq_enable {
|
|
- u8 enable;
|
|
- u8 pad[3];
|
|
- u8 irq_index;
|
|
-};
|
|
-
|
|
-struct dprc_cmd_get_irq_enable {
|
|
- __le32 pad;
|
|
- u8 irq_index;
|
|
-};
|
|
-
|
|
-struct dprc_rsp_get_irq_enable {
|
|
- u8 enabled;
|
|
-};
|
|
-
|
|
-struct dprc_cmd_set_irq_mask {
|
|
- __le32 mask;
|
|
- u8 irq_index;
|
|
-};
|
|
-
|
|
-struct dprc_cmd_get_irq_mask {
|
|
- __le32 pad;
|
|
- u8 irq_index;
|
|
-};
|
|
-
|
|
-struct dprc_rsp_get_irq_mask {
|
|
- __le32 mask;
|
|
-};
|
|
-
|
|
-struct dprc_cmd_get_irq_status {
|
|
- __le32 status;
|
|
- u8 irq_index;
|
|
-};
|
|
-
|
|
-struct dprc_rsp_get_irq_status {
|
|
- __le32 status;
|
|
-};
|
|
-
|
|
-struct dprc_cmd_clear_irq_status {
|
|
- __le32 status;
|
|
- u8 irq_index;
|
|
-};
|
|
-
|
|
-struct dprc_rsp_get_attributes {
|
|
- /* response word 0 */
|
|
- __le32 container_id;
|
|
- __le16 icid;
|
|
- __le16 pad;
|
|
- /* response word 1 */
|
|
- __le32 options;
|
|
- __le32 portal_id;
|
|
-};
|
|
-
|
|
-struct dprc_cmd_set_res_quota {
|
|
- /* cmd word 0 */
|
|
- __le32 child_container_id;
|
|
- __le16 quota;
|
|
- __le16 pad;
|
|
- /* cmd words 1-2 */
|
|
- u8 type[16];
|
|
-};
|
|
-
|
|
-struct dprc_cmd_get_res_quota {
|
|
- /* cmd word 0 */
|
|
- __le32 child_container_id;
|
|
- __le32 pad;
|
|
- /* cmd word 1-2 */
|
|
- u8 type[16];
|
|
-};
|
|
-
|
|
-struct dprc_rsp_get_res_quota {
|
|
- __le32 pad;
|
|
- __le16 quota;
|
|
-};
|
|
-
|
|
-struct dprc_cmd_assign {
|
|
- /* cmd word 0 */
|
|
- __le32 container_id;
|
|
- __le32 options;
|
|
- /* cmd word 1 */
|
|
- __le32 num;
|
|
- __le32 id_base_align;
|
|
- /* cmd word 2-3 */
|
|
- u8 type[16];
|
|
-};
|
|
-
|
|
-struct dprc_cmd_unassign {
|
|
- /* cmd word 0 */
|
|
- __le32 child_container_id;
|
|
- __le32 options;
|
|
- /* cmd word 1 */
|
|
- __le32 num;
|
|
- __le32 id_base_align;
|
|
- /* cmd word 2-3 */
|
|
- u8 type[16];
|
|
-};
|
|
-
|
|
-struct dprc_rsp_get_pool_count {
|
|
- __le32 pool_count;
|
|
-};
|
|
-
|
|
-struct dprc_cmd_get_pool {
|
|
- __le32 pool_index;
|
|
-};
|
|
-
|
|
-struct dprc_rsp_get_pool {
|
|
- /* response word 0 */
|
|
- __le64 pad;
|
|
- /* response word 1-2 */
|
|
- u8 type[16];
|
|
-};
|
|
-
|
|
-struct dprc_rsp_get_obj_count {
|
|
- __le32 pad;
|
|
- __le32 obj_count;
|
|
-};
|
|
-
|
|
-struct dprc_cmd_get_obj {
|
|
- __le32 obj_index;
|
|
-};
|
|
-
|
|
-struct dprc_rsp_get_obj {
|
|
- /* response word 0 */
|
|
- __le32 pad0;
|
|
- __le32 id;
|
|
- /* response word 1 */
|
|
- __le16 vendor;
|
|
- u8 irq_count;
|
|
- u8 region_count;
|
|
- __le32 state;
|
|
- /* response word 2 */
|
|
- __le16 version_major;
|
|
- __le16 version_minor;
|
|
- __le16 flags;
|
|
- __le16 pad1;
|
|
- /* response word 3-4 */
|
|
- u8 type[16];
|
|
- /* response word 5-6 */
|
|
- u8 label[16];
|
|
-};
|
|
-
|
|
-struct dprc_cmd_get_obj_desc {
|
|
- /* cmd word 0 */
|
|
- __le32 obj_id;
|
|
- __le32 pad;
|
|
- /* cmd word 1-2 */
|
|
- u8 type[16];
|
|
-};
|
|
-
|
|
-struct dprc_rsp_get_obj_desc {
|
|
- /* response word 0 */
|
|
- __le32 pad0;
|
|
- __le32 id;
|
|
- /* response word 1 */
|
|
- __le16 vendor;
|
|
- u8 irq_count;
|
|
- u8 region_count;
|
|
- __le32 state;
|
|
- /* response word 2 */
|
|
- __le16 version_major;
|
|
- __le16 version_minor;
|
|
- __le16 flags;
|
|
- __le16 pad1;
|
|
- /* response word 3-4 */
|
|
- u8 type[16];
|
|
- /* response word 5-6 */
|
|
- u8 label[16];
|
|
-};
|
|
-
|
|
-struct dprc_cmd_get_res_count {
|
|
- /* cmd word 0 */
|
|
- __le64 pad;
|
|
- /* cmd word 1-2 */
|
|
- u8 type[16];
|
|
-};
|
|
-
|
|
-struct dprc_rsp_get_res_count {
|
|
- __le32 res_count;
|
|
-};
|
|
-
|
|
-struct dprc_cmd_get_res_ids {
|
|
- /* cmd word 0 */
|
|
- u8 pad0[5];
|
|
- u8 iter_status;
|
|
- __le16 pad1;
|
|
- /* cmd word 1 */
|
|
- __le32 base_id;
|
|
- __le32 last_id;
|
|
- /* cmd word 2-3 */
|
|
- u8 type[16];
|
|
-};
|
|
-
|
|
-struct dprc_rsp_get_res_ids {
|
|
- /* response word 0 */
|
|
- u8 pad0[5];
|
|
- u8 iter_status;
|
|
- __le16 pad1;
|
|
- /* response word 1 */
|
|
- __le32 base_id;
|
|
- __le32 last_id;
|
|
-};
|
|
-
|
|
-struct dprc_cmd_get_obj_region {
|
|
- /* cmd word 0 */
|
|
- __le32 obj_id;
|
|
- __le16 pad0;
|
|
- u8 region_index;
|
|
- u8 pad1;
|
|
- /* cmd word 1-2 */
|
|
- __le64 pad2[2];
|
|
- /* cmd word 3-4 */
|
|
- u8 obj_type[16];
|
|
-};
|
|
-
|
|
-struct dprc_rsp_get_obj_region {
|
|
- /* response word 0 */
|
|
- __le64 pad;
|
|
- /* response word 1 */
|
|
- __le64 base_addr;
|
|
- /* response word 2 */
|
|
- __le32 size;
|
|
-};
|
|
-
|
|
-struct dprc_cmd_set_obj_label {
|
|
- /* cmd word 0 */
|
|
- __le32 obj_id;
|
|
- __le32 pad;
|
|
- /* cmd word 1-2 */
|
|
- u8 label[16];
|
|
- /* cmd word 3-4 */
|
|
- u8 obj_type[16];
|
|
-};
|
|
-
|
|
-struct dprc_cmd_set_obj_irq {
|
|
- /* cmd word 0 */
|
|
- __le32 irq_val;
|
|
- u8 irq_index;
|
|
- u8 pad[3];
|
|
- /* cmd word 1 */
|
|
- __le64 irq_addr;
|
|
- /* cmd word 2 */
|
|
- __le32 irq_num;
|
|
- __le32 obj_id;
|
|
- /* cmd word 3-4 */
|
|
- u8 obj_type[16];
|
|
-};
|
|
-
|
|
-struct dprc_cmd_get_obj_irq {
|
|
- /* cmd word 0 */
|
|
- __le32 obj_id;
|
|
- u8 irq_index;
|
|
- u8 pad[3];
|
|
- /* cmd word 1-2 */
|
|
- u8 obj_type[16];
|
|
-};
|
|
-
|
|
-struct dprc_rsp_get_obj_irq {
|
|
- /* response word 0 */
|
|
- __le32 irq_val;
|
|
- __le32 pad;
|
|
- /* response word 1 */
|
|
- __le64 irq_addr;
|
|
- /* response word 2 */
|
|
- __le32 irq_num;
|
|
- __le32 type;
|
|
-};
|
|
-
|
|
-struct dprc_cmd_connect {
|
|
- /* cmd word 0 */
|
|
- __le32 ep1_id;
|
|
- __le32 ep1_interface_id;
|
|
- /* cmd word 1 */
|
|
- __le32 ep2_id;
|
|
- __le32 ep2_interface_id;
|
|
- /* cmd word 2-3 */
|
|
- u8 ep1_type[16];
|
|
- /* cmd word 4 */
|
|
- __le32 max_rate;
|
|
- __le32 committed_rate;
|
|
- /* cmd word 5-6 */
|
|
- u8 ep2_type[16];
|
|
-};
|
|
-
|
|
-struct dprc_cmd_disconnect {
|
|
- /* cmd word 0 */
|
|
- __le32 id;
|
|
- __le32 interface_id;
|
|
- /* cmd word 1-2 */
|
|
- u8 type[16];
|
|
-};
|
|
-
|
|
-struct dprc_cmd_get_connection {
|
|
- /* cmd word 0 */
|
|
- __le32 ep1_id;
|
|
- __le32 ep1_interface_id;
|
|
- /* cmd word 1-2 */
|
|
- u8 ep1_type[16];
|
|
-};
|
|
-
|
|
-struct dprc_rsp_get_connection {
|
|
- /* response word 0-2 */
|
|
- __le64 pad[3];
|
|
- /* response word 3 */
|
|
- __le32 ep2_id;
|
|
- __le32 ep2_interface_id;
|
|
- /* response word 4-5 */
|
|
- u8 ep2_type[16];
|
|
- /* response word 6 */
|
|
- __le32 state;
|
|
-};
|
|
-
|
|
-#endif /* _FSL_DPRC_CMD_H */
|
|
--- a/drivers/staging/fsl-mc/bus/dprc.h
|
|
+++ /dev/null
|
|
@@ -1,268 +0,0 @@
|
|
-/*
|
|
- * Copyright 2013-2016 Freescale Semiconductor Inc.
|
|
- *
|
|
- * Redistribution and use in source and binary forms, with or without
|
|
- * modification, are permitted provided that the following conditions are met:
|
|
- * * Redistributions of source code must retain the above copyright
|
|
- * notice, this list of conditions and the following disclaimer.
|
|
- * * Redistributions in binary form must reproduce the above copyright
|
|
- * notice, this list of conditions and the following disclaimer in the
|
|
- * documentation and/or other materials provided with the distribution.
|
|
- * * Neither the name of the above-listed copyright holders nor the
|
|
- * names of any contributors may be used to endorse or promote products
|
|
- * derived from this software without specific prior written permission.
|
|
- *
|
|
- *
|
|
- * ALTERNATIVELY, this software may be distributed under the terms of the
|
|
- * GNU General Public License ("GPL") as published by the Free Software
|
|
- * Foundation, either version 2 of that License or (at your option) any
|
|
- * later version.
|
|
- *
|
|
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
- * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
|
|
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
- * POSSIBILITY OF SUCH DAMAGE.
|
|
- */
|
|
-#ifndef _FSL_DPRC_H
|
|
-#define _FSL_DPRC_H
|
|
-
|
|
-/*
|
|
- * Data Path Resource Container API
|
|
- * Contains DPRC API for managing and querying DPAA resources
|
|
- */
|
|
-
|
|
-struct fsl_mc_io;
|
|
-struct fsl_mc_obj_desc;
|
|
-
|
|
-int dprc_open(struct fsl_mc_io *mc_io,
|
|
- u32 cmd_flags,
|
|
- int container_id,
|
|
- u16 *token);
|
|
-
|
|
-int dprc_close(struct fsl_mc_io *mc_io,
|
|
- u32 cmd_flags,
|
|
- u16 token);
|
|
-
|
|
-/* IRQ */
|
|
-
|
|
-/* IRQ index */
|
|
-#define DPRC_IRQ_INDEX 0
|
|
-
|
|
-/* Number of dprc's IRQs */
|
|
-#define DPRC_NUM_OF_IRQS 1
|
|
-
|
|
-/* DPRC IRQ events */
|
|
-
|
|
-/* IRQ event - Indicates that a new object added to the container */
|
|
-#define DPRC_IRQ_EVENT_OBJ_ADDED 0x00000001
|
|
-/* IRQ event - Indicates that an object was removed from the container */
|
|
-#define DPRC_IRQ_EVENT_OBJ_REMOVED 0x00000002
|
|
-/* IRQ event - Indicates that resources added to the container */
|
|
-#define DPRC_IRQ_EVENT_RES_ADDED 0x00000004
|
|
-/* IRQ event - Indicates that resources removed from the container */
|
|
-#define DPRC_IRQ_EVENT_RES_REMOVED 0x00000008
|
|
-/*
|
|
- * IRQ event - Indicates that one of the descendant containers that opened by
|
|
- * this container is destroyed
|
|
- */
|
|
-#define DPRC_IRQ_EVENT_CONTAINER_DESTROYED 0x00000010
|
|
-
|
|
-/*
|
|
- * IRQ event - Indicates that on one of the container's opened object is
|
|
- * destroyed
|
|
- */
|
|
-#define DPRC_IRQ_EVENT_OBJ_DESTROYED 0x00000020
|
|
-
|
|
-/* Irq event - Indicates that object is created at the container */
|
|
-#define DPRC_IRQ_EVENT_OBJ_CREATED 0x00000040
|
|
-
|
|
-/**
|
|
- * struct dprc_irq_cfg - IRQ configuration
|
|
- * @paddr: Address that must be written to signal a message-based interrupt
|
|
- * @val: Value to write into irq_addr address
|
|
- * @irq_num: A user defined number associated with this IRQ
|
|
- */
|
|
-struct dprc_irq_cfg {
|
|
- phys_addr_t paddr;
|
|
- u32 val;
|
|
- int irq_num;
|
|
-};
|
|
-
|
|
-int dprc_set_irq(struct fsl_mc_io *mc_io,
|
|
- u32 cmd_flags,
|
|
- u16 token,
|
|
- u8 irq_index,
|
|
- struct dprc_irq_cfg *irq_cfg);
|
|
-
|
|
-int dprc_get_irq(struct fsl_mc_io *mc_io,
|
|
- u32 cmd_flags,
|
|
- u16 token,
|
|
- u8 irq_index,
|
|
- int *type,
|
|
- struct dprc_irq_cfg *irq_cfg);
|
|
-
|
|
-int dprc_set_irq_enable(struct fsl_mc_io *mc_io,
|
|
- u32 cmd_flags,
|
|
- u16 token,
|
|
- u8 irq_index,
|
|
- u8 en);
|
|
-
|
|
-int dprc_get_irq_enable(struct fsl_mc_io *mc_io,
|
|
- u32 cmd_flags,
|
|
- u16 token,
|
|
- u8 irq_index,
|
|
- u8 *en);
|
|
-
|
|
-int dprc_set_irq_mask(struct fsl_mc_io *mc_io,
|
|
- u32 cmd_flags,
|
|
- u16 token,
|
|
- u8 irq_index,
|
|
- u32 mask);
|
|
-
|
|
-int dprc_get_irq_mask(struct fsl_mc_io *mc_io,
|
|
- u32 cmd_flags,
|
|
- u16 token,
|
|
- u8 irq_index,
|
|
- u32 *mask);
|
|
-
|
|
-int dprc_get_irq_status(struct fsl_mc_io *mc_io,
|
|
- u32 cmd_flags,
|
|
- u16 token,
|
|
- u8 irq_index,
|
|
- u32 *status);
|
|
-
|
|
-int dprc_clear_irq_status(struct fsl_mc_io *mc_io,
|
|
- u32 cmd_flags,
|
|
- u16 token,
|
|
- u8 irq_index,
|
|
- u32 status);
|
|
-
|
|
-/**
|
|
- * struct dprc_attributes - Container attributes
|
|
- * @container_id: Container's ID
|
|
- * @icid: Container's ICID
|
|
- * @portal_id: Container's portal ID
|
|
- * @options: Container's options as set at container's creation
|
|
- */
|
|
-struct dprc_attributes {
|
|
- int container_id;
|
|
- u16 icid;
|
|
- int portal_id;
|
|
- u64 options;
|
|
-};
|
|
-
|
|
-int dprc_get_attributes(struct fsl_mc_io *mc_io,
|
|
- u32 cmd_flags,
|
|
- u16 token,
|
|
- struct dprc_attributes *attributes);
|
|
-
|
|
-int dprc_get_obj_count(struct fsl_mc_io *mc_io,
|
|
- u32 cmd_flags,
|
|
- u16 token,
|
|
- int *obj_count);
|
|
-
|
|
-int dprc_get_obj(struct fsl_mc_io *mc_io,
|
|
- u32 cmd_flags,
|
|
- u16 token,
|
|
- int obj_index,
|
|
- struct fsl_mc_obj_desc *obj_desc);
|
|
-
|
|
-int dprc_get_obj_desc(struct fsl_mc_io *mc_io,
|
|
- u32 cmd_flags,
|
|
- u16 token,
|
|
- char *obj_type,
|
|
- int obj_id,
|
|
- struct fsl_mc_obj_desc *obj_desc);
|
|
-
|
|
-int dprc_set_obj_irq(struct fsl_mc_io *mc_io,
|
|
- u32 cmd_flags,
|
|
- u16 token,
|
|
- char *obj_type,
|
|
- int obj_id,
|
|
- u8 irq_index,
|
|
- struct dprc_irq_cfg *irq_cfg);
|
|
-
|
|
-int dprc_get_obj_irq(struct fsl_mc_io *mc_io,
|
|
- u32 cmd_flags,
|
|
- u16 token,
|
|
- char *obj_type,
|
|
- int obj_id,
|
|
- u8 irq_index,
|
|
- int *type,
|
|
- struct dprc_irq_cfg *irq_cfg);
|
|
-
|
|
-int dprc_get_res_count(struct fsl_mc_io *mc_io,
|
|
- u32 cmd_flags,
|
|
- u16 token,
|
|
- char *type,
|
|
- int *res_count);
|
|
-
|
|
-/**
|
|
- * enum dprc_iter_status - Iteration status
|
|
- * @DPRC_ITER_STATUS_FIRST: Perform first iteration
|
|
- * @DPRC_ITER_STATUS_MORE: Indicates more/next iteration is needed
|
|
- * @DPRC_ITER_STATUS_LAST: Indicates last iteration
|
|
- */
|
|
-enum dprc_iter_status {
|
|
- DPRC_ITER_STATUS_FIRST = 0,
|
|
- DPRC_ITER_STATUS_MORE = 1,
|
|
- DPRC_ITER_STATUS_LAST = 2
|
|
-};
|
|
-
|
|
-/* Region flags */
|
|
-/* Cacheable - Indicates that region should be mapped as cacheable */
|
|
-#define DPRC_REGION_CACHEABLE 0x00000001
|
|
-
|
|
-/**
|
|
- * enum dprc_region_type - Region type
|
|
- * @DPRC_REGION_TYPE_MC_PORTAL: MC portal region
|
|
- * @DPRC_REGION_TYPE_QBMAN_PORTAL: Qbman portal region
|
|
- */
|
|
-enum dprc_region_type {
|
|
- DPRC_REGION_TYPE_MC_PORTAL,
|
|
- DPRC_REGION_TYPE_QBMAN_PORTAL
|
|
-};
|
|
-
|
|
-/**
|
|
- * struct dprc_region_desc - Mappable region descriptor
|
|
- * @base_offset: Region offset from region's base address.
|
|
- * For DPMCP and DPRC objects, region base is offset from SoC MC portals
|
|
- * base address; For DPIO, region base is offset from SoC QMan portals
|
|
- * base address
|
|
- * @size: Region size (in bytes)
|
|
- * @flags: Region attributes
|
|
- * @type: Portal region type
|
|
- */
|
|
-struct dprc_region_desc {
|
|
- u32 base_offset;
|
|
- u32 size;
|
|
- u32 flags;
|
|
- enum dprc_region_type type;
|
|
-};
|
|
-
|
|
-int dprc_get_obj_region(struct fsl_mc_io *mc_io,
|
|
- u32 cmd_flags,
|
|
- u16 token,
|
|
- char *obj_type,
|
|
- int obj_id,
|
|
- u8 region_index,
|
|
- struct dprc_region_desc *region_desc);
|
|
-
|
|
-int dprc_get_api_version(struct fsl_mc_io *mc_io,
|
|
- u32 cmd_flags,
|
|
- u16 *major_ver,
|
|
- u16 *minor_ver);
|
|
-
|
|
-int dprc_get_container_id(struct fsl_mc_io *mc_io,
|
|
- u32 cmd_flags,
|
|
- int *container_id);
|
|
-
|
|
-#endif /* _FSL_DPRC_H */
|
|
-
|
|
--- a/drivers/staging/fsl-mc/bus/irq-gic-v3-its-fsl-mc-msi.c
|
|
+++ b/drivers/staging/fsl-mc/bus/irq-gic-v3-its-fsl-mc-msi.c
|
|
@@ -13,6 +13,7 @@
|
|
#include <linux/msi.h>
|
|
#include <linux/of.h>
|
|
#include <linux/of_irq.h>
|
|
+#include <linux/fsl/mc.h>
|
|
#include "fsl-mc-private.h"
|
|
|
|
static struct irq_chip its_msi_irq_chip = {
|
|
--- /dev/null
|
|
+++ b/include/linux/fsl/mc.h
|
|
@@ -0,0 +1,1020 @@
|
|
+/* SPDX-License-Identifier: GPL-2.0 */
|
|
+/*
|
|
+ * Freescale Management Complex (MC) bus public interface
|
|
+ *
|
|
+ * Copyright (C) 2014-2016 Freescale Semiconductor, Inc.
|
|
+ * Author: German Rivera <German.Rivera@freescale.com>
|
|
+ *
|
|
+ */
|
|
+#ifndef _FSL_MC_H_
|
|
+#define _FSL_MC_H_
|
|
+
|
|
+#include <linux/device.h>
|
|
+#include <linux/mod_devicetable.h>
|
|
+#include <linux/interrupt.h>
|
|
+#include <linux/cdev.h>
|
|
+#include <uapi/linux/fsl_mc.h>
|
|
+
|
|
+#define FSL_MC_VENDOR_FREESCALE 0x1957
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+
|
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+struct irq_domain;
|
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+struct msi_domain_info;
|
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+
|
|
+struct fsl_mc_device;
|
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+struct fsl_mc_io;
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+
|
|
+/**
|
|
+ * struct fsl_mc_driver - MC object device driver object
|
|
+ * @driver: Generic device driver
|
|
+ * @match_id_table: table of supported device matching Ids
|
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+ * @probe: Function called when a device is added
|
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+ * @remove: Function called when a device is removed
|
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+ * @shutdown: Function called at shutdown time to quiesce the device
|
|
+ * @suspend: Function called when a device is stopped
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+ * @resume: Function called when a device is resumed
|
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+ *
|
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+ * Generic DPAA device driver object for device drivers that are registered
|
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+ * with a DPRC bus. This structure is to be embedded in each device-specific
|
|
+ * driver structure.
|
|
+ */
|
|
+struct fsl_mc_driver {
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+ struct device_driver driver;
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|
+ const struct fsl_mc_device_id *match_id_table;
|
|
+ int (*probe)(struct fsl_mc_device *dev);
|
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+ int (*remove)(struct fsl_mc_device *dev);
|
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+ void (*shutdown)(struct fsl_mc_device *dev);
|
|
+ int (*suspend)(struct fsl_mc_device *dev, pm_message_t state);
|
|
+ int (*resume)(struct fsl_mc_device *dev);
|
|
+};
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+
|
|
+#define to_fsl_mc_driver(_drv) \
|
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+ container_of(_drv, struct fsl_mc_driver, driver)
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+
|
|
+#define to_fsl_mc_bus(_mc_dev) \
|
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+ container_of(_mc_dev, struct fsl_mc_bus, mc_dev)
|
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+
|
|
+/**
|
|
+ * enum fsl_mc_pool_type - Types of allocatable MC bus resources
|
|
+ *
|
|
+ * Entries in these enum are used as indices in the array of resource
|
|
+ * pools of an fsl_mc_bus object.
|
|
+ */
|
|
+enum fsl_mc_pool_type {
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+ FSL_MC_POOL_DPMCP = 0x0, /* corresponds to "dpmcp" in the MC */
|
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+ FSL_MC_POOL_DPBP, /* corresponds to "dpbp" in the MC */
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+ FSL_MC_POOL_DPCON, /* corresponds to "dpcon" in the MC */
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+ FSL_MC_POOL_IRQ,
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+
|
|
+ /*
|
|
+ * NOTE: New resource pool types must be added before this entry
|
|
+ */
|
|
+ FSL_MC_NUM_POOL_TYPES
|
|
+};
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|
+
|
|
+/**
|
|
+ * struct fsl_mc_resource - MC generic resource
|
|
+ * @type: type of resource
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|
+ * @id: unique MC resource Id within the resources of the same type
|
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+ * @data: pointer to resource-specific data if the resource is currently
|
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+ * allocated, or NULL if the resource is not currently allocated.
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+ * @parent_pool: pointer to the parent resource pool from which this
|
|
+ * resource is allocated from.
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+ * @node: Node in the free list of the corresponding resource pool
|
|
+ *
|
|
+ * NOTE: This structure is to be embedded as a field of specific
|
|
+ * MC resource structures.
|
|
+ */
|
|
+struct fsl_mc_resource {
|
|
+ enum fsl_mc_pool_type type;
|
|
+ s32 id;
|
|
+ void *data;
|
|
+ struct fsl_mc_resource_pool *parent_pool;
|
|
+ struct list_head node;
|
|
+};
|
|
+
|
|
+/**
|
|
+ * struct fsl_mc_device_irq - MC object device message-based interrupt
|
|
+ * @msi_desc: pointer to MSI descriptor allocated by fsl_mc_msi_alloc_descs()
|
|
+ * @mc_dev: MC object device that owns this interrupt
|
|
+ * @dev_irq_index: device-relative IRQ index
|
|
+ * @resource: MC generic resource associated with the interrupt
|
|
+ */
|
|
+struct fsl_mc_device_irq {
|
|
+ struct msi_desc *msi_desc;
|
|
+ struct fsl_mc_device *mc_dev;
|
|
+ u8 dev_irq_index;
|
|
+ struct fsl_mc_resource resource;
|
|
+};
|
|
+
|
|
+#define to_fsl_mc_irq(_mc_resource) \
|
|
+ container_of(_mc_resource, struct fsl_mc_device_irq, resource)
|
|
+
|
|
+/* Opened state - Indicates that an object is open by at least one owner */
|
|
+#define FSL_MC_OBJ_STATE_OPEN 0x00000001
|
|
+/* Plugged state - Indicates that the object is plugged */
|
|
+#define FSL_MC_OBJ_STATE_PLUGGED 0x00000002
|
|
+
|
|
+/**
|
|
+ * Shareability flag - Object flag indicating no memory shareability.
|
|
+ * the object generates memory accesses that are non coherent with other
|
|
+ * masters;
|
|
+ * user is responsible for proper memory handling through IOMMU configuration.
|
|
+ */
|
|
+#define FSL_MC_OBJ_FLAG_NO_MEM_SHAREABILITY 0x0001
|
|
+
|
|
+/**
|
|
+ * struct fsl_mc_obj_desc - Object descriptor
|
|
+ * @type: Type of object: NULL terminated string
|
|
+ * @id: ID of logical object resource
|
|
+ * @vendor: Object vendor identifier
|
|
+ * @ver_major: Major version number
|
|
+ * @ver_minor: Minor version number
|
|
+ * @irq_count: Number of interrupts supported by the object
|
|
+ * @region_count: Number of mappable regions supported by the object
|
|
+ * @state: Object state: combination of FSL_MC_OBJ_STATE_ states
|
|
+ * @label: Object label: NULL terminated string
|
|
+ * @flags: Object's flags
|
|
+ */
|
|
+struct fsl_mc_obj_desc {
|
|
+ char type[16];
|
|
+ int id;
|
|
+ u16 vendor;
|
|
+ u16 ver_major;
|
|
+ u16 ver_minor;
|
|
+ u8 irq_count;
|
|
+ u8 region_count;
|
|
+ u32 state;
|
|
+ char label[16];
|
|
+ u16 flags;
|
|
+};
|
|
+
|
|
+/**
|
|
+ * Bit masks for a MC object device (struct fsl_mc_device) flags
|
|
+ */
|
|
+#define FSL_MC_IS_DPRC 0x0001
|
|
+
|
|
+/**
|
|
+ * struct fsl_mc_device - MC object device object
|
|
+ * @dev: Linux driver model device object
|
|
+ * @dma_mask: Default DMA mask
|
|
+ * @flags: MC object device flags
|
|
+ * @icid: Isolation context ID for the device
|
|
+ * @mc_handle: MC handle for the corresponding MC object opened
|
|
+ * @mc_io: Pointer to MC IO object assigned to this device or
|
|
+ * NULL if none.
|
|
+ * @obj_desc: MC description of the DPAA device
|
|
+ * @regions: pointer to array of MMIO region entries
|
|
+ * @irqs: pointer to array of pointers to interrupts allocated to this device
|
|
+ * @resource: generic resource associated with this MC object device, if any.
|
|
+ * @driver_override: Driver name to force a match
|
|
+ *
|
|
+ * Generic device object for MC object devices that are "attached" to a
|
|
+ * MC bus.
|
|
+ *
|
|
+ * NOTES:
|
|
+ * - For a non-DPRC object its icid is the same as its parent DPRC's icid.
|
|
+ * - The SMMU notifier callback gets invoked after device_add() has been
|
|
+ * called for an MC object device, but before the device-specific probe
|
|
+ * callback gets called.
|
|
+ * - DP_OBJ_DPRC objects are the only MC objects that have built-in MC
|
|
+ * portals. For all other MC objects, their device drivers are responsible for
|
|
+ * allocating MC portals for them by calling fsl_mc_portal_allocate().
|
|
+ * - Some types of MC objects (e.g., DP_OBJ_DPBP, DP_OBJ_DPCON) are
|
|
+ * treated as resources that can be allocated/deallocated from the
|
|
+ * corresponding resource pool in the object's parent DPRC, using the
|
|
+ * fsl_mc_object_allocate()/fsl_mc_object_free() functions. These MC objects
|
|
+ * are known as "allocatable" objects. For them, the corresponding
|
|
+ * fsl_mc_device's 'resource' points to the associated resource object.
|
|
+ * For MC objects that are not allocatable (e.g., DP_OBJ_DPRC, DP_OBJ_DPNI),
|
|
+ * 'resource' is NULL.
|
|
+ */
|
|
+struct fsl_mc_device {
|
|
+ struct device dev;
|
|
+ u64 dma_mask;
|
|
+ u16 flags;
|
|
+ u32 icid;
|
|
+ u16 mc_handle;
|
|
+ struct fsl_mc_io *mc_io;
|
|
+ struct fsl_mc_obj_desc obj_desc;
|
|
+ struct resource *regions;
|
|
+ struct fsl_mc_device_irq **irqs;
|
|
+ struct fsl_mc_resource *resource;
|
|
+ const char *driver_override;
|
|
+};
|
|
+
|
|
+#define to_fsl_mc_device(_dev) \
|
|
+ container_of(_dev, struct fsl_mc_device, dev)
|
|
+
|
|
+struct mc_cmd_header {
|
|
+ u8 src_id;
|
|
+ u8 flags_hw;
|
|
+ u8 status;
|
|
+ u8 flags_sw;
|
|
+ __le16 token;
|
|
+ __le16 cmd_id;
|
|
+};
|
|
+
|
|
+enum mc_cmd_status {
|
|
+ MC_CMD_STATUS_OK = 0x0, /* Completed successfully */
|
|
+ MC_CMD_STATUS_READY = 0x1, /* Ready to be processed */
|
|
+ MC_CMD_STATUS_AUTH_ERR = 0x3, /* Authentication error */
|
|
+ MC_CMD_STATUS_NO_PRIVILEGE = 0x4, /* No privilege */
|
|
+ MC_CMD_STATUS_DMA_ERR = 0x5, /* DMA or I/O error */
|
|
+ MC_CMD_STATUS_CONFIG_ERR = 0x6, /* Configuration error */
|
|
+ MC_CMD_STATUS_TIMEOUT = 0x7, /* Operation timed out */
|
|
+ MC_CMD_STATUS_NO_RESOURCE = 0x8, /* No resources */
|
|
+ MC_CMD_STATUS_NO_MEMORY = 0x9, /* No memory available */
|
|
+ MC_CMD_STATUS_BUSY = 0xA, /* Device is busy */
|
|
+ MC_CMD_STATUS_UNSUPPORTED_OP = 0xB, /* Unsupported operation */
|
|
+ MC_CMD_STATUS_INVALID_STATE = 0xC /* Invalid state */
|
|
+};
|
|
+
|
|
+/*
|
|
+ * MC command flags
|
|
+ */
|
|
+
|
|
+/* High priority flag */
|
|
+#define MC_CMD_FLAG_PRI 0x80
|
|
+/* Command completion flag */
|
|
+#define MC_CMD_FLAG_INTR_DIS 0x01
|
|
+
|
|
+static inline u64 mc_encode_cmd_header(u16 cmd_id,
|
|
+ u32 cmd_flags,
|
|
+ u16 token)
|
|
+{
|
|
+ u64 header = 0;
|
|
+ struct mc_cmd_header *hdr = (struct mc_cmd_header *)&header;
|
|
+
|
|
+ hdr->cmd_id = cpu_to_le16(cmd_id);
|
|
+ hdr->token = cpu_to_le16(token);
|
|
+ hdr->status = MC_CMD_STATUS_READY;
|
|
+ if (cmd_flags & MC_CMD_FLAG_PRI)
|
|
+ hdr->flags_hw = MC_CMD_FLAG_PRI;
|
|
+ if (cmd_flags & MC_CMD_FLAG_INTR_DIS)
|
|
+ hdr->flags_sw = MC_CMD_FLAG_INTR_DIS;
|
|
+
|
|
+ return header;
|
|
+}
|
|
+
|
|
+static inline u16 mc_cmd_hdr_read_token(struct fsl_mc_command *cmd)
|
|
+{
|
|
+ struct mc_cmd_header *hdr = (struct mc_cmd_header *)&cmd->header;
|
|
+ u16 token = le16_to_cpu(hdr->token);
|
|
+
|
|
+ return token;
|
|
+}
|
|
+
|
|
+struct mc_rsp_create {
|
|
+ __le32 object_id;
|
|
+};
|
|
+
|
|
+struct mc_rsp_api_ver {
|
|
+ __le16 major_ver;
|
|
+ __le16 minor_ver;
|
|
+};
|
|
+
|
|
+static inline u32 mc_cmd_read_object_id(struct fsl_mc_command *cmd)
|
|
+{
|
|
+ struct mc_rsp_create *rsp_params;
|
|
+
|
|
+ rsp_params = (struct mc_rsp_create *)cmd->params;
|
|
+ return le32_to_cpu(rsp_params->object_id);
|
|
+}
|
|
+
|
|
+static inline void mc_cmd_read_api_version(struct fsl_mc_command *cmd,
|
|
+ u16 *major_ver,
|
|
+ u16 *minor_ver)
|
|
+{
|
|
+ struct mc_rsp_api_ver *rsp_params;
|
|
+
|
|
+ rsp_params = (struct mc_rsp_api_ver *)cmd->params;
|
|
+ *major_ver = le16_to_cpu(rsp_params->major_ver);
|
|
+ *minor_ver = le16_to_cpu(rsp_params->minor_ver);
|
|
+}
|
|
+
|
|
+/**
|
|
+ * Bit masks for a MC I/O object (struct fsl_mc_io) flags
|
|
+ */
|
|
+#define FSL_MC_IO_ATOMIC_CONTEXT_PORTAL 0x0001
|
|
+
|
|
+/**
|
|
+ * struct fsl_mc_io - MC I/O object to be passed-in to mc_send_command()
|
|
+ * @dev: device associated with this Mc I/O object
|
|
+ * @flags: flags for mc_send_command()
|
|
+ * @portal_size: MC command portal size in bytes
|
|
+ * @portal_phys_addr: MC command portal physical address
|
|
+ * @portal_virt_addr: MC command portal virtual address
|
|
+ * @dpmcp_dev: pointer to the DPMCP device associated with the MC portal.
|
|
+ *
|
|
+ * Fields are only meaningful if the FSL_MC_IO_ATOMIC_CONTEXT_PORTAL flag is not
|
|
+ * set:
|
|
+ * @mutex: Mutex to serialize mc_send_command() calls that use the same MC
|
|
+ * portal, if the fsl_mc_io object was created with the
|
|
+ * FSL_MC_IO_ATOMIC_CONTEXT_PORTAL flag off. mc_send_command() calls for this
|
|
+ * fsl_mc_io object must be made only from non-atomic context.
|
|
+ *
|
|
+ * Fields are only meaningful if the FSL_MC_IO_ATOMIC_CONTEXT_PORTAL flag is
|
|
+ * set:
|
|
+ * @spinlock: Spinlock to serialize mc_send_command() calls that use the same MC
|
|
+ * portal, if the fsl_mc_io object was created with the
|
|
+ * FSL_MC_IO_ATOMIC_CONTEXT_PORTAL flag on. mc_send_command() calls for this
|
|
+ * fsl_mc_io object can be made from atomic or non-atomic context.
|
|
+ */
|
|
+struct fsl_mc_io {
|
|
+ struct device *dev;
|
|
+ u16 flags;
|
|
+ u32 portal_size;
|
|
+ phys_addr_t portal_phys_addr;
|
|
+ void __iomem *portal_virt_addr;
|
|
+ struct fsl_mc_device *dpmcp_dev;
|
|
+ union {
|
|
+ /*
|
|
+ * This field is only meaningful if the
|
|
+ * FSL_MC_IO_ATOMIC_CONTEXT_PORTAL flag is not set
|
|
+ */
|
|
+ struct mutex mutex; /* serializes mc_send_command() */
|
|
+
|
|
+ /*
|
|
+ * This field is only meaningful if the
|
|
+ * FSL_MC_IO_ATOMIC_CONTEXT_PORTAL flag is set
|
|
+ */
|
|
+ spinlock_t spinlock; /* serializes mc_send_command() */
|
|
+ };
|
|
+};
|
|
+
|
|
+int mc_send_command(struct fsl_mc_io *mc_io, struct fsl_mc_command *cmd);
|
|
+
|
|
+#ifdef CONFIG_FSL_MC_BUS
|
|
+#define dev_is_fsl_mc(_dev) ((_dev)->bus == &fsl_mc_bus_type)
|
|
+#else
|
|
+/* If fsl-mc bus is not present device cannot belong to fsl-mc bus */
|
|
+#define dev_is_fsl_mc(_dev) (0)
|
|
+#endif
|
|
+
|
|
+/* Macro to check if a device is a container device */
|
|
+#define fsl_mc_is_cont_dev(_dev) (to_fsl_mc_device(_dev)->flags & \
|
|
+ FSL_MC_IS_DPRC)
|
|
+
|
|
+/* Macro to get the container device of a MC device */
|
|
+#define fsl_mc_cont_dev(_dev) (fsl_mc_is_cont_dev(_dev) ? \
|
|
+ (_dev) : (_dev)->parent)
|
|
+
|
|
+#define fsl_mc_is_dev_coherent(_dev) \
|
|
+ (!((to_fsl_mc_device(_dev))->obj_desc.flags & \
|
|
+ FSL_MC_OBJ_FLAG_NO_MEM_SHAREABILITY))
|
|
+
|
|
+/*
|
|
+ * module_fsl_mc_driver() - Helper macro for drivers that don't do
|
|
+ * anything special in module init/exit. This eliminates a lot of
|
|
+ * boilerplate. Each module may only use this macro once, and
|
|
+ * calling it replaces module_init() and module_exit()
|
|
+ */
|
|
+#define module_fsl_mc_driver(__fsl_mc_driver) \
|
|
+ module_driver(__fsl_mc_driver, fsl_mc_driver_register, \
|
|
+ fsl_mc_driver_unregister)
|
|
+
|
|
+void fsl_mc_device_remove(struct fsl_mc_device *mc_dev);
|
|
+
|
|
+/*
|
|
+ * Macro to avoid include chaining to get THIS_MODULE
|
|
+ */
|
|
+#define fsl_mc_driver_register(drv) \
|
|
+ __fsl_mc_driver_register(drv, THIS_MODULE)
|
|
+
|
|
+int __must_check __fsl_mc_driver_register(struct fsl_mc_driver *fsl_mc_driver,
|
|
+ struct module *owner);
|
|
+
|
|
+void fsl_mc_driver_unregister(struct fsl_mc_driver *driver);
|
|
+
|
|
+int __must_check fsl_mc_portal_allocate(struct fsl_mc_device *mc_dev,
|
|
+ u16 mc_io_flags,
|
|
+ struct fsl_mc_io **new_mc_io);
|
|
+
|
|
+void fsl_mc_portal_free(struct fsl_mc_io *mc_io);
|
|
+
|
|
+int fsl_mc_portal_reset(struct fsl_mc_io *mc_io);
|
|
+
|
|
+int __must_check fsl_mc_object_allocate(struct fsl_mc_device *mc_dev,
|
|
+ enum fsl_mc_pool_type pool_type,
|
|
+ struct fsl_mc_device **new_mc_adev);
|
|
+
|
|
+void fsl_mc_object_free(struct fsl_mc_device *mc_adev);
|
|
+
|
|
+struct irq_domain *fsl_mc_msi_create_irq_domain(struct fwnode_handle *fwnode,
|
|
+ struct msi_domain_info *info,
|
|
+ struct irq_domain *parent);
|
|
+
|
|
+int __must_check fsl_mc_allocate_irqs(struct fsl_mc_device *mc_dev);
|
|
+
|
|
+void fsl_mc_free_irqs(struct fsl_mc_device *mc_dev);
|
|
+
|
|
+extern struct bus_type fsl_mc_bus_type;
|
|
+
|
|
+extern struct device_type fsl_mc_bus_dprc_type;
|
|
+extern struct device_type fsl_mc_bus_dpni_type;
|
|
+extern struct device_type fsl_mc_bus_dpio_type;
|
|
+extern struct device_type fsl_mc_bus_dpsw_type;
|
|
+extern struct device_type fsl_mc_bus_dpdmux_type;
|
|
+extern struct device_type fsl_mc_bus_dpbp_type;
|
|
+extern struct device_type fsl_mc_bus_dpcon_type;
|
|
+extern struct device_type fsl_mc_bus_dpmcp_type;
|
|
+extern struct device_type fsl_mc_bus_dpmac_type;
|
|
+extern struct device_type fsl_mc_bus_dprtc_type;
|
|
+extern struct device_type fsl_mc_bus_dpseci_type;
|
|
+extern struct device_type fsl_mc_bus_dpdcei_type;
|
|
+extern struct device_type fsl_mc_bus_dpaiop_type;
|
|
+extern struct device_type fsl_mc_bus_dpci_type;
|
|
+extern struct device_type fsl_mc_bus_dpdmai_type;
|
|
+
|
|
+static inline bool is_fsl_mc_bus_dprc(const struct fsl_mc_device *mc_dev)
|
|
+{
|
|
+ return mc_dev->dev.type == &fsl_mc_bus_dprc_type;
|
|
+}
|
|
+
|
|
+static inline bool is_fsl_mc_bus_dpni(const struct fsl_mc_device *mc_dev)
|
|
+{
|
|
+ return mc_dev->dev.type == &fsl_mc_bus_dpni_type;
|
|
+}
|
|
+
|
|
+static inline bool is_fsl_mc_bus_dpio(const struct fsl_mc_device *mc_dev)
|
|
+{
|
|
+ return mc_dev->dev.type == &fsl_mc_bus_dpio_type;
|
|
+}
|
|
+
|
|
+static inline bool is_fsl_mc_bus_dpsw(const struct fsl_mc_device *mc_dev)
|
|
+{
|
|
+ return mc_dev->dev.type == &fsl_mc_bus_dpsw_type;
|
|
+}
|
|
+
|
|
+static inline bool is_fsl_mc_bus_dpdmux(const struct fsl_mc_device *mc_dev)
|
|
+{
|
|
+ return mc_dev->dev.type == &fsl_mc_bus_dpdmux_type;
|
|
+}
|
|
+
|
|
+static inline bool is_fsl_mc_bus_dpbp(const struct fsl_mc_device *mc_dev)
|
|
+{
|
|
+ return mc_dev->dev.type == &fsl_mc_bus_dpbp_type;
|
|
+}
|
|
+
|
|
+static inline bool is_fsl_mc_bus_dpcon(const struct fsl_mc_device *mc_dev)
|
|
+{
|
|
+ return mc_dev->dev.type == &fsl_mc_bus_dpcon_type;
|
|
+}
|
|
+
|
|
+static inline bool is_fsl_mc_bus_dpmcp(const struct fsl_mc_device *mc_dev)
|
|
+{
|
|
+ return mc_dev->dev.type == &fsl_mc_bus_dpmcp_type;
|
|
+}
|
|
+
|
|
+static inline bool is_fsl_mc_bus_dpmac(const struct fsl_mc_device *mc_dev)
|
|
+{
|
|
+ return mc_dev->dev.type == &fsl_mc_bus_dpmac_type;
|
|
+}
|
|
+
|
|
+static inline bool is_fsl_mc_bus_dprtc(const struct fsl_mc_device *mc_dev)
|
|
+{
|
|
+ return mc_dev->dev.type == &fsl_mc_bus_dprtc_type;
|
|
+}
|
|
+
|
|
+static inline bool is_fsl_mc_bus_dpseci(const struct fsl_mc_device *mc_dev)
|
|
+{
|
|
+ return mc_dev->dev.type == &fsl_mc_bus_dpseci_type;
|
|
+}
|
|
+
|
|
+static inline bool is_fsl_mc_bus_dpdcei(const struct fsl_mc_device *mc_dev)
|
|
+{
|
|
+ return mc_dev->dev.type == &fsl_mc_bus_dpdcei_type;
|
|
+}
|
|
+
|
|
+static inline bool is_fsl_mc_bus_dpaiop(const struct fsl_mc_device *mc_dev)
|
|
+{
|
|
+ return mc_dev->dev.type == &fsl_mc_bus_dpaiop_type;
|
|
+}
|
|
+
|
|
+static inline bool is_fsl_mc_bus_dpci(const struct fsl_mc_device *mc_dev)
|
|
+{
|
|
+ return mc_dev->dev.type == &fsl_mc_bus_dpci_type;
|
|
+}
|
|
+
|
|
+static inline bool is_fsl_mc_bus_dpdmai(const struct fsl_mc_device *mc_dev)
|
|
+{
|
|
+ return mc_dev->dev.type == &fsl_mc_bus_dpdmai_type;
|
|
+}
|
|
+
|
|
+/*
|
|
+ * Data Path Resource Container (DPRC) API
|
|
+ */
|
|
+
|
|
+/* Minimal supported DPRC Version */
|
|
+#define DPRC_MIN_VER_MAJOR 6
|
|
+#define DPRC_MIN_VER_MINOR 0
|
|
+
|
|
+/* DPRC command versioning */
|
|
+#define DPRC_CMD_BASE_VERSION 1
|
|
+#define DPRC_CMD_ID_OFFSET 4
|
|
+
|
|
+#define DPRC_CMD(id) (((id) << DPRC_CMD_ID_OFFSET) | DPRC_CMD_BASE_VERSION)
|
|
+
|
|
+/* DPRC command IDs */
|
|
+#define DPRC_CMDID_CLOSE DPRC_CMD(0x800)
|
|
+#define DPRC_CMDID_OPEN DPRC_CMD(0x805)
|
|
+#define DPRC_CMDID_GET_API_VERSION DPRC_CMD(0xa05)
|
|
+
|
|
+#define DPRC_CMDID_GET_ATTR DPRC_CMD(0x004)
|
|
+#define DPRC_CMDID_RESET_CONT DPRC_CMD(0x005)
|
|
+
|
|
+#define DPRC_CMDID_SET_IRQ DPRC_CMD(0x010)
|
|
+#define DPRC_CMDID_SET_IRQ_ENABLE DPRC_CMD(0x012)
|
|
+#define DPRC_CMDID_SET_IRQ_MASK DPRC_CMD(0x014)
|
|
+#define DPRC_CMDID_GET_IRQ_STATUS DPRC_CMD(0x016)
|
|
+#define DPRC_CMDID_CLEAR_IRQ_STATUS DPRC_CMD(0x017)
|
|
+
|
|
+#define DPRC_CMDID_GET_CONT_ID DPRC_CMD(0x830)
|
|
+#define DPRC_CMDID_GET_OBJ_COUNT DPRC_CMD(0x159)
|
|
+#define DPRC_CMDID_GET_OBJ DPRC_CMD(0x15A)
|
|
+#define DPRC_CMDID_GET_OBJ_REG DPRC_CMD(0x15E)
|
|
+#define DPRC_CMDID_SET_OBJ_IRQ DPRC_CMD(0x15F)
|
|
+
|
|
+struct dprc_cmd_open {
|
|
+ __le32 container_id;
|
|
+};
|
|
+
|
|
+struct dprc_cmd_reset_container {
|
|
+ __le32 child_container_id;
|
|
+};
|
|
+
|
|
+struct dprc_cmd_set_irq {
|
|
+ /* cmd word 0 */
|
|
+ __le32 irq_val;
|
|
+ u8 irq_index;
|
|
+ u8 pad[3];
|
|
+ /* cmd word 1 */
|
|
+ __le64 irq_addr;
|
|
+ /* cmd word 2 */
|
|
+ __le32 irq_num;
|
|
+};
|
|
+
|
|
+#define DPRC_ENABLE 0x1
|
|
+
|
|
+struct dprc_cmd_set_irq_enable {
|
|
+ u8 enable;
|
|
+ u8 pad[3];
|
|
+ u8 irq_index;
|
|
+};
|
|
+
|
|
+struct dprc_cmd_set_irq_mask {
|
|
+ __le32 mask;
|
|
+ u8 irq_index;
|
|
+};
|
|
+
|
|
+struct dprc_cmd_get_irq_status {
|
|
+ __le32 status;
|
|
+ u8 irq_index;
|
|
+};
|
|
+
|
|
+struct dprc_rsp_get_irq_status {
|
|
+ __le32 status;
|
|
+};
|
|
+
|
|
+struct dprc_cmd_clear_irq_status {
|
|
+ __le32 status;
|
|
+ u8 irq_index;
|
|
+};
|
|
+
|
|
+struct dprc_rsp_get_attributes {
|
|
+ /* response word 0 */
|
|
+ __le32 container_id;
|
|
+ __le32 icid;
|
|
+ /* response word 1 */
|
|
+ __le32 options;
|
|
+ __le32 portal_id;
|
|
+};
|
|
+
|
|
+struct dprc_rsp_get_obj_count {
|
|
+ __le32 pad;
|
|
+ __le32 obj_count;
|
|
+};
|
|
+
|
|
+struct dprc_cmd_get_obj {
|
|
+ __le32 obj_index;
|
|
+};
|
|
+
|
|
+struct dprc_rsp_get_obj {
|
|
+ /* response word 0 */
|
|
+ __le32 pad0;
|
|
+ __le32 id;
|
|
+ /* response word 1 */
|
|
+ __le16 vendor;
|
|
+ u8 irq_count;
|
|
+ u8 region_count;
|
|
+ __le32 state;
|
|
+ /* response word 2 */
|
|
+ __le16 version_major;
|
|
+ __le16 version_minor;
|
|
+ __le16 flags;
|
|
+ __le16 pad1;
|
|
+ /* response word 3-4 */
|
|
+ u8 type[16];
|
|
+ /* response word 5-6 */
|
|
+ u8 label[16];
|
|
+};
|
|
+
|
|
+struct dprc_cmd_get_obj_region {
|
|
+ /* cmd word 0 */
|
|
+ __le32 obj_id;
|
|
+ __le16 pad0;
|
|
+ u8 region_index;
|
|
+ u8 pad1;
|
|
+ /* cmd word 1-2 */
|
|
+ __le64 pad2[2];
|
|
+ /* cmd word 3-4 */
|
|
+ u8 obj_type[16];
|
|
+};
|
|
+
|
|
+struct dprc_rsp_get_obj_region {
|
|
+ /* response word 0 */
|
|
+ __le64 pad0;
|
|
+ /* response word 1 */
|
|
+ __le32 base_addr;
|
|
+ __le32 pad1;
|
|
+ /* response word 2 */
|
|
+ __le32 size;
|
|
+ u8 type;
|
|
+ u8 pad2[3];
|
|
+ /* response word 3 */
|
|
+ __le32 flags;
|
|
+};
|
|
+
|
|
+struct dprc_cmd_set_obj_irq {
|
|
+ /* cmd word 0 */
|
|
+ __le32 irq_val;
|
|
+ u8 irq_index;
|
|
+ u8 pad[3];
|
|
+ /* cmd word 1 */
|
|
+ __le64 irq_addr;
|
|
+ /* cmd word 2 */
|
|
+ __le32 irq_num;
|
|
+ __le32 obj_id;
|
|
+ /* cmd word 3-4 */
|
|
+ u8 obj_type[16];
|
|
+};
|
|
+
|
|
+/*
|
|
+ * DPRC API for managing and querying DPAA resources
|
|
+ */
|
|
+int dprc_open(struct fsl_mc_io *mc_io,
|
|
+ u32 cmd_flags,
|
|
+ int container_id,
|
|
+ u16 *token);
|
|
+
|
|
+int dprc_close(struct fsl_mc_io *mc_io,
|
|
+ u32 cmd_flags,
|
|
+ u16 token);
|
|
+
|
|
+/* DPRC IRQ events */
|
|
+
|
|
+/* IRQ event - Indicates that a new object added to the container */
|
|
+#define DPRC_IRQ_EVENT_OBJ_ADDED 0x00000001
|
|
+/* IRQ event - Indicates that an object was removed from the container */
|
|
+#define DPRC_IRQ_EVENT_OBJ_REMOVED 0x00000002
|
|
+/*
|
|
+ * IRQ event - Indicates that one of the descendant containers that opened by
|
|
+ * this container is destroyed
|
|
+ */
|
|
+#define DPRC_IRQ_EVENT_CONTAINER_DESTROYED 0x00000010
|
|
+
|
|
+/*
|
|
+ * IRQ event - Indicates that on one of the container's opened object is
|
|
+ * destroyed
|
|
+ */
|
|
+#define DPRC_IRQ_EVENT_OBJ_DESTROYED 0x00000020
|
|
+
|
|
+/* Irq event - Indicates that object is created at the container */
|
|
+#define DPRC_IRQ_EVENT_OBJ_CREATED 0x00000040
|
|
+
|
|
+/**
|
|
+ * struct dprc_irq_cfg - IRQ configuration
|
|
+ * @paddr: Address that must be written to signal a message-based interrupt
|
|
+ * @val: Value to write into irq_addr address
|
|
+ * @irq_num: A user defined number associated with this IRQ
|
|
+ */
|
|
+struct dprc_irq_cfg {
|
|
+ phys_addr_t paddr;
|
|
+ u32 val;
|
|
+ int irq_num;
|
|
+};
|
|
+
|
|
+int dprc_set_irq(struct fsl_mc_io *mc_io,
|
|
+ u32 cmd_flags,
|
|
+ u16 token,
|
|
+ u8 irq_index,
|
|
+ struct dprc_irq_cfg *irq_cfg);
|
|
+
|
|
+int dprc_set_irq_enable(struct fsl_mc_io *mc_io,
|
|
+ u32 cmd_flags,
|
|
+ u16 token,
|
|
+ u8 irq_index,
|
|
+ u8 en);
|
|
+
|
|
+int dprc_set_irq_mask(struct fsl_mc_io *mc_io,
|
|
+ u32 cmd_flags,
|
|
+ u16 token,
|
|
+ u8 irq_index,
|
|
+ u32 mask);
|
|
+
|
|
+int dprc_get_irq_status(struct fsl_mc_io *mc_io,
|
|
+ u32 cmd_flags,
|
|
+ u16 token,
|
|
+ u8 irq_index,
|
|
+ u32 *status);
|
|
+
|
|
+int dprc_clear_irq_status(struct fsl_mc_io *mc_io,
|
|
+ u32 cmd_flags,
|
|
+ u16 token,
|
|
+ u8 irq_index,
|
|
+ u32 status);
|
|
+
|
|
+/**
|
|
+ * struct dprc_attributes - Container attributes
|
|
+ * @container_id: Container's ID
|
|
+ * @icid: Container's ICID
|
|
+ * @portal_id: Container's portal ID
|
|
+ * @options: Container's options as set at container's creation
|
|
+ */
|
|
+struct dprc_attributes {
|
|
+ int container_id;
|
|
+ u32 icid;
|
|
+ int portal_id;
|
|
+ u64 options;
|
|
+};
|
|
+
|
|
+int dprc_get_attributes(struct fsl_mc_io *mc_io,
|
|
+ u32 cmd_flags,
|
|
+ u16 token,
|
|
+ struct dprc_attributes *attributes);
|
|
+
|
|
+int dprc_get_obj_count(struct fsl_mc_io *mc_io,
|
|
+ u32 cmd_flags,
|
|
+ u16 token,
|
|
+ int *obj_count);
|
|
+
|
|
+int dprc_get_obj(struct fsl_mc_io *mc_io,
|
|
+ u32 cmd_flags,
|
|
+ u16 token,
|
|
+ int obj_index,
|
|
+ struct fsl_mc_obj_desc *obj_desc);
|
|
+
|
|
+int dprc_set_obj_irq(struct fsl_mc_io *mc_io,
|
|
+ u32 cmd_flags,
|
|
+ u16 token,
|
|
+ char *obj_type,
|
|
+ int obj_id,
|
|
+ u8 irq_index,
|
|
+ struct dprc_irq_cfg *irq_cfg);
|
|
+
|
|
+/* Region flags */
|
|
+/* Cacheable - Indicates that region should be mapped as cacheable */
|
|
+#define DPRC_REGION_CACHEABLE 0x00000001
|
|
+
|
|
+/**
|
|
+ * enum dprc_region_type - Region type
|
|
+ * @DPRC_REGION_TYPE_MC_PORTAL: MC portal region
|
|
+ * @DPRC_REGION_TYPE_QBMAN_PORTAL: Qbman portal region
|
|
+ */
|
|
+enum dprc_region_type {
|
|
+ DPRC_REGION_TYPE_MC_PORTAL,
|
|
+ DPRC_REGION_TYPE_QBMAN_PORTAL
|
|
+};
|
|
+
|
|
+/**
|
|
+ * struct dprc_region_desc - Mappable region descriptor
|
|
+ * @base_offset: Region offset from region's base address.
|
|
+ * For DPMCP and DPRC objects, region base is offset from SoC MC portals
|
|
+ * base address; For DPIO, region base is offset from SoC QMan portals
|
|
+ * base address
|
|
+ * @size: Region size (in bytes)
|
|
+ * @flags: Region attributes
|
|
+ * @type: Portal region type
|
|
+ */
|
|
+struct dprc_region_desc {
|
|
+ u32 base_offset;
|
|
+ u32 size;
|
|
+ u32 flags;
|
|
+ enum dprc_region_type type;
|
|
+};
|
|
+
|
|
+int dprc_get_obj_region(struct fsl_mc_io *mc_io,
|
|
+ u32 cmd_flags,
|
|
+ u16 token,
|
|
+ char *obj_type,
|
|
+ int obj_id,
|
|
+ u8 region_index,
|
|
+ struct dprc_region_desc *region_desc);
|
|
+
|
|
+int dprc_get_api_version(struct fsl_mc_io *mc_io,
|
|
+ u32 cmd_flags,
|
|
+ u16 *major_ver,
|
|
+ u16 *minor_ver);
|
|
+
|
|
+int dprc_get_container_id(struct fsl_mc_io *mc_io,
|
|
+ u32 cmd_flags,
|
|
+ int *container_id);
|
|
+
|
|
+int dprc_reset_container(struct fsl_mc_io *mc_io,
|
|
+ u32 cmd_flags,
|
|
+ u16 token,
|
|
+ int child_container_id);
|
|
+
|
|
+/*
|
|
+ * Data Path Buffer Pool (DPBP) API
|
|
+ * Contains initialization APIs and runtime control APIs for DPBP
|
|
+ */
|
|
+
|
|
+int dpbp_open(struct fsl_mc_io *mc_io,
|
|
+ u32 cmd_flags,
|
|
+ int dpbp_id,
|
|
+ u16 *token);
|
|
+
|
|
+int dpbp_close(struct fsl_mc_io *mc_io,
|
|
+ u32 cmd_flags,
|
|
+ u16 token);
|
|
+
|
|
+int dpbp_enable(struct fsl_mc_io *mc_io,
|
|
+ u32 cmd_flags,
|
|
+ u16 token);
|
|
+
|
|
+int dpbp_disable(struct fsl_mc_io *mc_io,
|
|
+ u32 cmd_flags,
|
|
+ u16 token);
|
|
+
|
|
+int dpbp_reset(struct fsl_mc_io *mc_io,
|
|
+ u32 cmd_flags,
|
|
+ u16 token);
|
|
+
|
|
+/**
|
|
+ * struct dpbp_attr - Structure representing DPBP attributes
|
|
+ * @id: DPBP object ID
|
|
+ * @bpid: Hardware buffer pool ID; should be used as an argument in
|
|
+ * acquire/release operations on buffers
|
|
+ */
|
|
+struct dpbp_attr {
|
|
+ int id;
|
|
+ u16 bpid;
|
|
+};
|
|
+
|
|
+int dpbp_get_attributes(struct fsl_mc_io *mc_io,
|
|
+ u32 cmd_flags,
|
|
+ u16 token,
|
|
+ struct dpbp_attr *attr);
|
|
+
|
|
+/* Data Path Concentrator (DPCON) API
|
|
+ * Contains initialization APIs and runtime control APIs for DPCON
|
|
+ */
|
|
+
|
|
+/**
|
|
+ * Use it to disable notifications; see dpcon_set_notification()
|
|
+ */
|
|
+#define DPCON_INVALID_DPIO_ID (int)(-1)
|
|
+
|
|
+int dpcon_open(struct fsl_mc_io *mc_io,
|
|
+ u32 cmd_flags,
|
|
+ int dpcon_id,
|
|
+ u16 *token);
|
|
+
|
|
+int dpcon_close(struct fsl_mc_io *mc_io,
|
|
+ u32 cmd_flags,
|
|
+ u16 token);
|
|
+
|
|
+int dpcon_enable(struct fsl_mc_io *mc_io,
|
|
+ u32 cmd_flags,
|
|
+ u16 token);
|
|
+
|
|
+int dpcon_disable(struct fsl_mc_io *mc_io,
|
|
+ u32 cmd_flags,
|
|
+ u16 token);
|
|
+
|
|
+int dpcon_reset(struct fsl_mc_io *mc_io,
|
|
+ u32 cmd_flags,
|
|
+ u16 token);
|
|
+
|
|
+/**
|
|
+ * struct dpcon_attr - Structure representing DPCON attributes
|
|
+ * @id: DPCON object ID
|
|
+ * @qbman_ch_id: Channel ID to be used by dequeue operation
|
|
+ * @num_priorities: Number of priorities for the DPCON channel (1-8)
|
|
+ */
|
|
+struct dpcon_attr {
|
|
+ int id;
|
|
+ u16 qbman_ch_id;
|
|
+ u8 num_priorities;
|
|
+};
|
|
+
|
|
+int dpcon_get_attributes(struct fsl_mc_io *mc_io,
|
|
+ u32 cmd_flags,
|
|
+ u16 token,
|
|
+ struct dpcon_attr *attr);
|
|
+
|
|
+/**
|
|
+ * struct dpcon_notification_cfg - Structure representing notification params
|
|
+ * @dpio_id: DPIO object ID; must be configured with a notification channel;
|
|
+ * to disable notifications set it to 'DPCON_INVALID_DPIO_ID';
|
|
+ * @priority: Priority selection within the DPIO channel; valid values
|
|
+ * are 0-7, depending on the number of priorities in that channel
|
|
+ * @user_ctx: User context value provided with each CDAN message
|
|
+ */
|
|
+struct dpcon_notification_cfg {
|
|
+ int dpio_id;
|
|
+ u8 priority;
|
|
+ u64 user_ctx;
|
|
+};
|
|
+
|
|
+int dpcon_set_notification(struct fsl_mc_io *mc_io,
|
|
+ u32 cmd_flags,
|
|
+ u16 token,
|
|
+ struct dpcon_notification_cfg *cfg);
|
|
+
|
|
+struct irq_domain;
|
|
+struct msi_domain_info;
|
|
+
|
|
+/**
|
|
+ * Maximum number of total IRQs that can be pre-allocated for an MC bus'
|
|
+ * IRQ pool
|
|
+ */
|
|
+#define FSL_MC_IRQ_POOL_MAX_TOTAL_IRQS 256
|
|
+
|
|
+/**
|
|
+ * struct fsl_mc_resource_pool - Pool of MC resources of a given
|
|
+ * type
|
|
+ * @type: type of resources in the pool
|
|
+ * @max_count: maximum number of resources in the pool
|
|
+ * @free_count: number of free resources in the pool
|
|
+ * @mutex: mutex to serialize access to the pool's free list
|
|
+ * @free_list: anchor node of list of free resources in the pool
|
|
+ * @mc_bus: pointer to the MC bus that owns this resource pool
|
|
+ */
|
|
+struct fsl_mc_resource_pool {
|
|
+ enum fsl_mc_pool_type type;
|
|
+ int max_count;
|
|
+ int free_count;
|
|
+ struct mutex mutex; /* serializes access to free_list */
|
|
+ struct list_head free_list;
|
|
+ struct fsl_mc_bus *mc_bus;
|
|
+};
|
|
+
|
|
+/**
|
|
+ * struct fsl_mc_restool - information associated with a restool device file
|
|
+ * @cdev: struct char device linked to the root dprc
|
|
+ * @dev: dev_t for the char device to be added
|
|
+ * @device: newly created device in /dev
|
|
+ * @mutex: mutex lock to serialize the open/release operations
|
|
+ * @local_instance_in_use: local MC I/O instance in use or not
|
|
+ * @dynamic_instance_count: number of dynamically created MC I/O instances
|
|
+ */
|
|
+struct fsl_mc_restool {
|
|
+ struct cdev cdev;
|
|
+ dev_t dev;
|
|
+ struct device *device;
|
|
+ struct mutex mutex; /* serialize open/release operations */
|
|
+ bool local_instance_in_use;
|
|
+ u32 dynamic_instance_count;
|
|
+};
|
|
+
|
|
+/**
|
|
+ * struct fsl_mc_bus - logical bus that corresponds to a physical DPRC
|
|
+ * @mc_dev: fsl-mc device for the bus device itself.
|
|
+ * @resource_pools: array of resource pools (one pool per resource type)
|
|
+ * for this MC bus. These resources represent allocatable entities
|
|
+ * from the physical DPRC.
|
|
+ * @irq_resources: Pointer to array of IRQ objects for the IRQ pool
|
|
+ * @scan_mutex: Serializes bus scanning
|
|
+ * @dprc_attr: DPRC attributes
|
|
+ * @restool_misc: struct that abstracts the interaction with userspace restool
|
|
+ */
|
|
+struct fsl_mc_bus {
|
|
+ struct fsl_mc_device mc_dev;
|
|
+ struct fsl_mc_resource_pool resource_pools[FSL_MC_NUM_POOL_TYPES];
|
|
+ struct fsl_mc_device_irq *irq_resources;
|
|
+ struct mutex scan_mutex; /* serializes bus scanning */
|
|
+ struct dprc_attributes dprc_attr;
|
|
+ struct fsl_mc_restool restool_misc;
|
|
+};
|
|
+
|
|
+int dprc_scan_objects(struct fsl_mc_device *mc_bus_dev,
|
|
+ const char *driver_override,
|
|
+ unsigned int *total_irq_count);
|
|
+
|
|
+int fsl_mc_find_msi_domain(struct device *mc_platform_dev,
|
|
+ struct irq_domain **mc_msi_domain);
|
|
+
|
|
+int fsl_mc_populate_irq_pool(struct fsl_mc_bus *mc_bus,
|
|
+ unsigned int irq_count);
|
|
+
|
|
+void fsl_mc_cleanup_irq_pool(struct fsl_mc_bus *mc_bus);
|
|
+
|
|
+void fsl_mc_init_all_resource_pools(struct fsl_mc_device *mc_bus_dev);
|
|
+
|
|
+void fsl_mc_cleanup_all_resource_pools(struct fsl_mc_device *mc_bus_dev);
|
|
+
|
|
+void fsl_mc_get_root_dprc(struct device *dev, struct device **root_dprc_dev);
|
|
+
|
|
+#endif /* _FSL_MC_H_ */
|
|
--- /dev/null
|
|
+++ b/include/uapi/linux/fsl_mc.h
|
|
@@ -0,0 +1,31 @@
|
|
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
|
|
+/*
|
|
+ * Management Complex (MC) userspace public interface
|
|
+ *
|
|
+ * Copyright 2018 NXP
|
|
+ *
|
|
+ */
|
|
+#ifndef _UAPI_FSL_MC_H_
|
|
+#define _UAPI_FSL_MC_H_
|
|
+
|
|
+#define MC_CMD_NUM_OF_PARAMS 7
|
|
+
|
|
+/**
|
|
+ * struct fsl_mc_command - Management Complex (MC) command structure
|
|
+ * @header: MC command header
|
|
+ * @params: MC command parameters
|
|
+ *
|
|
+ * Used by RESTOOL_SEND_MC_COMMAND
|
|
+ */
|
|
+struct fsl_mc_command {
|
|
+ __u64 header;
|
|
+ __u64 params[MC_CMD_NUM_OF_PARAMS];
|
|
+};
|
|
+
|
|
+#define RESTOOL_IOCTL_TYPE 'R'
|
|
+#define RESTOOL_IOCTL_SEQ 0xE0
|
|
+
|
|
+#define RESTOOL_SEND_MC_COMMAND \
|
|
+ _IOWR(RESTOOL_IOCTL_TYPE, RESTOOL_IOCTL_SEQ, struct fsl_mc_command)
|
|
+
|
|
+#endif /* _UAPI_FSL_MC_H_ */
|