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mac80211: brcmfmac: backport more kernel 5.4 changes
Patch getting RAM info got upstreamed. A debugging fs entry for testing reset feature was added. Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
This commit is contained in:
Rafał Miłecki
parent
ba305d12de
commit
681acdcc54
@ -0,0 +1,54 @@
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From cddecd92d1ec2fd05ed1123455e7c6cf6906b5a5 Mon Sep 17 00:00:00 2001
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From: YueHaibing <yuehaibing@huawei.com>
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Date: Wed, 24 Jul 2019 22:12:01 +0800
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Subject: [PATCH] brcmfmac: remove set but not used variable 'dtim_period'
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Fixes gcc '-Wunused-but-set-variable' warning:
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drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c: In function brcmf_update_bss_info:
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drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c:2962:5: warning: variable dtim_period set but not used [-Wunused-but-set-variable]
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drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c: In function brcmf_update_bss_info:
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drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c:2961:6: warning: variable beacon_interval set but not used [-Wunused-but-set-variable]
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They are never used so can be removed.
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Reported-by: Hulk Robot <hulkci@huawei.com>
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Signed-off-by: YueHaibing <yuehaibing@huawei.com>
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Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
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---
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.../net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c | 8 +-------
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1 file changed, 1 insertion(+), 7 deletions(-)
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--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
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+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
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@@ -2982,8 +2982,6 @@ static s32 brcmf_update_bss_info(struct
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struct brcmf_pub *drvr = cfg->pub;
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struct brcmf_bss_info_le *bi;
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const struct brcmf_tlv *tim;
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- u16 beacon_interval;
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- u8 dtim_period;
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size_t ie_len;
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u8 *ie;
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s32 err = 0;
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@@ -3007,12 +3005,9 @@ static s32 brcmf_update_bss_info(struct
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ie = ((u8 *)bi) + le16_to_cpu(bi->ie_offset);
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ie_len = le32_to_cpu(bi->ie_length);
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- beacon_interval = le16_to_cpu(bi->beacon_period);
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tim = brcmf_parse_tlvs(ie, ie_len, WLAN_EID_TIM);
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- if (tim)
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- dtim_period = tim->data[1];
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- else {
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+ if (!tim) {
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/*
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* active scan was done so we could not get dtim
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* information out of probe response.
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@@ -3024,7 +3019,6 @@ static s32 brcmf_update_bss_info(struct
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bphy_err(drvr, "wl dtim_assoc failed (%d)\n", err);
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goto update_bss_info_out;
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}
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- dtim_period = (u8)var;
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}
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update_bss_info_out:
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@ -0,0 +1,26 @@
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From 73c742bb9c9ba30871fdd5c730d5ca8b6712833a Mon Sep 17 00:00:00 2001
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From: Colin Ian King <colin.king@canonical.com>
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Date: Fri, 9 Aug 2019 18:22:17 +0100
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Subject: [PATCH] brcmfmac: remove redundant assignment to pointer hash
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The pointer hash is being initialized with a value that is never read
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and is being re-assigned a little later on. The assignment is
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redundant and hence can be removed.
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Addresses-Coverity: ("Unused value")
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Signed-off-by: Colin Ian King <colin.king@canonical.com>
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Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
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---
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drivers/net/wireless/broadcom/brcm80211/brcmfmac/msgbuf.c | 1 -
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1 file changed, 1 deletion(-)
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--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/msgbuf.c
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+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/msgbuf.c
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@@ -1468,7 +1468,6 @@ static int brcmf_msgbuf_stats_read(struc
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seq_printf(seq, "\nh2d_flowrings: depth %u\n",
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BRCMF_H2D_TXFLOWRING_MAX_ITEM);
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seq_puts(seq, "Active flowrings:\n");
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- hash = msgbuf->flow->hash;
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for (i = 0; i < msgbuf->flow->nrofrings; i++) {
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if (!msgbuf->flow->rings[i])
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continue;
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@ -0,0 +1,36 @@
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From 5f42b382ead278c1f6c3854765c97eb20491aa2a Mon Sep 17 00:00:00 2001
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From: Xulin Sun <xulin.sun@windriver.com>
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Date: Fri, 23 Aug 2019 15:47:08 +0800
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Subject: [PATCH] brcmfmac: replace strncpy() by strscpy()
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The strncpy() may truncate the copied string,
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replace it by the safer strscpy().
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To avoid below compile warning with gcc 8.2:
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drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c:In function 'brcmf_vndr_ie':
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drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c:4227:2:
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warning: 'strncpy' output truncated before terminating nul copying 3 bytes from a string of the same length [-Wstringop-truncation]
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strncpy(iebuf, add_del_cmd, VNDR_IE_CMD_LEN - 1);
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^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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Signed-off-by: Xulin Sun <xulin.sun@windriver.com>
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Acked-by: Arend van Spriel <arend.vanspriel@broadcom.com>
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Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
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---
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drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c | 4 +---
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1 file changed, 1 insertion(+), 3 deletions(-)
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--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
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+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
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@@ -4244,9 +4244,7 @@ next:
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static u32
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brcmf_vndr_ie(u8 *iebuf, s32 pktflag, u8 *ie_ptr, u32 ie_len, s8 *add_del_cmd)
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{
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-
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- strncpy(iebuf, add_del_cmd, VNDR_IE_CMD_LEN - 1);
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- iebuf[VNDR_IE_CMD_LEN - 1] = '\0';
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+ strscpy(iebuf, add_del_cmd, VNDR_IE_CMD_LEN);
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put_unaligned_le32(1, &iebuf[VNDR_IE_COUNT_OFFSET]);
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@ -1,19 +1,29 @@
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From 82f93cf46d6007ffa003b2d4a2834563b6b84d21 Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
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Subject: [PATCH] brcmfmac: get RAM info right before downloading PCIe firmware
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Date: Thu, 29 Aug 2019 10:27:01 +0200
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Subject: [PATCH] brcmfmac: get chip's default RAM info during PCIe setup
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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It's important as brcmf_chip_get_raminfo() also makes sure that memory
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is properly setup. Without it the firmware could report invalid RAM
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address like 0x04000001.
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Getting RAM info just once per driver's lifetime (during chip
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recognition) is not enough as it may get adjusted later (depending on
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the used firmware). Subsequent inits may load different firmwares so a
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full RAM recognition is required on every PCIe setup. This is especially
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important since implementing hardware reset on a firmware crash.
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During a normal brcmfmac lifetime brcmf_chip_get_raminfo() is called on
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probe by the brcmf_chip_recognition(). This change allows implementing
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further improvements like handling errors by resetting a device with
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the brcmf_pcie_reset_device() and redownloading a firmware afterwards.
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Moreover calling brcmf_chip_get_raminfo() makes sure that RAM core is
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up. It's important as having BCMA_CORE_SYS_MEM down on BCM4366 was
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resulting in firmware failing to initialize and following error:
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[ 65.657546] brcmfmac 0000:01:00.0: brcmf_pcie_download_fw_nvram: Invalid shared RAM address 0x04000001
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This change makes brcmf_chip_get_raminfo() call during chip recognition
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redundant for PCIe devices but SDIO and USB still need it and it's a
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very small overhead anyway.
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Fixes: 4684997d9eea ("brcmfmac: reset PCIe bus on a firmware crash")
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Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
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Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
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---
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drivers/net/wireless/broadcom/brcm80211/brcmfmac/chip.c | 6 ++++--
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drivers/net/wireless/broadcom/brcm80211/brcmfmac/chip.h | 1 +
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@ -0,0 +1,31 @@
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From cb34212b1c25f7656a315f956d72696777e88340 Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
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Date: Sun, 1 Sep 2019 13:34:35 +0200
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Subject: [PATCH] brcmfmac: add stub version of brcmf_debugfs_get_devdir()
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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In case of compiling driver without DEBUG expose a stub function to make
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writing debug code much simpler (no extra conditions). This will allow
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e.g. using debugfs_create_file() without any magic if or #ifdef.
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Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
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Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
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---
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drivers/net/wireless/broadcom/brcm80211/brcmfmac/debug.h | 4 ++++
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1 file changed, 4 insertions(+)
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--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/debug.h
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+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/debug.h
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@@ -121,6 +121,10 @@ int brcmf_debugfs_add_entry(struct brcmf
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int brcmf_debug_create_memdump(struct brcmf_bus *bus, const void *data,
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size_t len);
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#else
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+static inline struct dentry *brcmf_debugfs_get_devdir(struct brcmf_pub *drvr)
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+{
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+ return ERR_PTR(-ENOENT);
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+}
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static inline
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int brcmf_debugfs_add_entry(struct brcmf_pub *drvr, const char *fn,
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int (*read_fn)(struct seq_file *seq, void *data))
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@ -0,0 +1,59 @@
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From 2f8c8e62cd50d72ac68de884a09c6f5a969a269c Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
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Date: Sun, 1 Sep 2019 13:34:36 +0200
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Subject: [PATCH] brcmfmac: add "reset" debugfs entry for testing reset
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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This is a trivial debugfs entry for triggering reset just like in case
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of firmware crash. It works by writing 1 to it:
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echo 1 > reset
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Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
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Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
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---
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.../broadcom/brcm80211/brcmfmac/core.c | 25 +++++++++++++++++++
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1 file changed, 25 insertions(+)
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--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c
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+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c
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@@ -1107,6 +1107,29 @@ static void brcmf_core_bus_reset(struct
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brcmf_bus_reset(drvr->bus_if);
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}
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+static ssize_t bus_reset_write(struct file *file, const char __user *user_buf,
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+ size_t count, loff_t *ppos)
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+{
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+ struct brcmf_pub *drvr = file->private_data;
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+ u8 value;
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+
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+ if (kstrtou8_from_user(user_buf, count, 0, &value))
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+ return -EINVAL;
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+
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+ if (value != 1)
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+ return -EINVAL;
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+
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+ schedule_work(&drvr->bus_reset);
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+
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+ return count;
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+}
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+
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+static const struct file_operations bus_reset_fops = {
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+ .open = simple_open,
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+ .llseek = no_llseek,
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+ .write = bus_reset_write,
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+};
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+
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static int brcmf_bus_started(struct brcmf_pub *drvr, struct cfg80211_ops *ops)
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{
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int ret = -1;
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@@ -1182,6 +1205,8 @@ static int brcmf_bus_started(struct brcm
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/* populate debugfs */
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brcmf_debugfs_add_entry(drvr, "revinfo", brcmf_revinfo_read);
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+ debugfs_create_file("reset", 0600, brcmf_debugfs_get_devdir(drvr), drvr,
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+ &bus_reset_fops);
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brcmf_feat_debugfs_create(drvr);
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brcmf_proto_debugfs_create(drvr);
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brcmf_bus_debugfs_create(bus_if);
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@ -0,0 +1,58 @@
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From 0e48b86d9a8f5c695bb02c9c02f6dc7d2ec8f2e2 Mon Sep 17 00:00:00 2001
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From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
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Date: Wed, 4 Sep 2019 20:50:52 +0300
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Subject: [PATCH] brcmfmac: use %*ph to print small buffer
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Use %*ph format to print small buffer as hex string.
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Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
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Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
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---
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.../broadcom/brcm80211/brcmfmac/cfg80211.c | 18 ++++++------------
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1 file changed, 6 insertions(+), 12 deletions(-)
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--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
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+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
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@@ -4222,10 +4222,8 @@ brcmf_parse_vndr_ies(const u8 *vndr_ie_b
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vndr_ies->count++;
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- brcmf_dbg(TRACE, "** OUI %02x %02x %02x, type 0x%02x\n",
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- parsed_info->vndrie.oui[0],
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- parsed_info->vndrie.oui[1],
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- parsed_info->vndrie.oui[2],
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+ brcmf_dbg(TRACE, "** OUI %3ph, type 0x%02x\n",
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+ parsed_info->vndrie.oui,
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parsed_info->vndrie.oui_type);
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if (vndr_ies->count >= VNDR_IE_PARSE_LIMIT)
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@@ -4349,12 +4347,10 @@ s32 brcmf_vif_set_mgmt_ie(struct brcmf_c
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for (i = 0; i < old_vndr_ies.count; i++) {
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vndrie_info = &old_vndr_ies.ie_info[i];
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- brcmf_dbg(TRACE, "DEL ID : %d, Len: %d , OUI:%02x:%02x:%02x\n",
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+ brcmf_dbg(TRACE, "DEL ID : %d, Len: %d , OUI:%3ph\n",
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vndrie_info->vndrie.id,
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vndrie_info->vndrie.len,
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- vndrie_info->vndrie.oui[0],
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- vndrie_info->vndrie.oui[1],
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- vndrie_info->vndrie.oui[2]);
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+ vndrie_info->vndrie.oui);
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del_add_ie_buf_len = brcmf_vndr_ie(curr_ie_buf, pktflag,
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vndrie_info->ie_ptr,
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@@ -4386,12 +4382,10 @@ s32 brcmf_vif_set_mgmt_ie(struct brcmf_c
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remained_buf_len -= (vndrie_info->ie_len +
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VNDR_IE_VSIE_OFFSET);
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- brcmf_dbg(TRACE, "ADDED ID : %d, Len: %d, OUI:%02x:%02x:%02x\n",
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+ brcmf_dbg(TRACE, "ADDED ID : %d, Len: %d, OUI:%3ph\n",
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vndrie_info->vndrie.id,
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vndrie_info->vndrie.len,
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- vndrie_info->vndrie.oui[0],
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- vndrie_info->vndrie.oui[1],
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- vndrie_info->vndrie.oui[2]);
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+ vndrie_info->vndrie.oui);
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del_add_ie_buf_len = brcmf_vndr_ie(curr_ie_buf, pktflag,
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vndrie_info->ie_ptr,
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@ -13,7 +13,7 @@ Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
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--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c
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+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c
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@@ -1425,6 +1425,7 @@ int __init brcmf_core_init(void)
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@@ -1450,6 +1450,7 @@ int __init brcmf_core_init(void)
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{
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if (!schedule_work(&brcmf_driver_work))
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return -EBUSY;
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