77e97abf12
Also removes random module and switches to new bcm2711 thermal driver. Boot tested on RPi 4B v1.1 4G. Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
454 lines
10 KiB
Diff
454 lines
10 KiB
Diff
From 31501b71a0237f3753d0210e3e122c548d6f3051 Mon Sep 17 00:00:00 2001
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From: John Stultz <john.stultz@linaro.org>
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Date: Tue, 3 Dec 2019 17:26:41 +0000
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Subject: [PATCH] kselftests: Add dma-heap test
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Commit a8779927fd86c91f5400bfcbccfa018a667d8350 upstream.
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Add very trivial allocation and import test for dma-heaps,
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utilizing the vgem driver as a test importer.
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A good chunk of this code taken from:
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tools/testing/selftests/android/ion/ionmap_test.c
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Originally by Laura Abbott <labbott@redhat.com>
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Cc: Benjamin Gaignard <benjamin.gaignard@linaro.org>
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Cc: Sumit Semwal <sumit.semwal@linaro.org>
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Cc: Liam Mark <lmark@codeaurora.org>
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Cc: Pratik Patel <pratikp@codeaurora.org>
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Cc: Brian Starkey <Brian.Starkey@arm.com>
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Cc: Vincent Donnefort <Vincent.Donnefort@arm.com>
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Cc: Sudipto Paul <Sudipto.Paul@arm.com>
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Cc: Andrew F. Davis <afd@ti.com>
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Cc: Christoph Hellwig <hch@infradead.org>
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Cc: Chenbo Feng <fengc@google.com>
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Cc: Alistair Strachan <astrachan@google.com>
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Cc: Hridya Valsaraju <hridya@google.com>
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Cc: Sandeep Patil <sspatil@google.com>
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Cc: Hillf Danton <hdanton@sina.com>
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Cc: Dave Airlie <airlied@gmail.com>
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Cc: dri-devel@lists.freedesktop.org
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Reviewed-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
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Reviewed-by: Brian Starkey <brian.starkey@arm.com>
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Acked-by: Sandeep Patil <sspatil@android.com>
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Acked-by: Laura Abbott <labbott@redhat.com>
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Tested-by: Ayan Kumar Halder <ayan.halder@arm.com>
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Signed-off-by: John Stultz <john.stultz@linaro.org>
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Signed-off-by: Sumit Semwal <sumit.semwal@linaro.org>
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Link: https://patchwork.freedesktop.org/patch/msgid/20191203172641.66642-6-john.stultz@linaro.org
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---
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tools/testing/selftests/dmabuf-heaps/Makefile | 6 +
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.../selftests/dmabuf-heaps/dmabuf-heap.c | 396 ++++++++++++++++++
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2 files changed, 402 insertions(+)
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create mode 100644 tools/testing/selftests/dmabuf-heaps/Makefile
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create mode 100644 tools/testing/selftests/dmabuf-heaps/dmabuf-heap.c
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--- /dev/null
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+++ b/tools/testing/selftests/dmabuf-heaps/Makefile
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@@ -0,0 +1,6 @@
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+# SPDX-License-Identifier: GPL-2.0
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+CFLAGS += -static -O3 -Wl,-no-as-needed -Wall -I../../../../usr/include
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+
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+TEST_GEN_PROGS = dmabuf-heap
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+
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+include ../lib.mk
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--- /dev/null
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+++ b/tools/testing/selftests/dmabuf-heaps/dmabuf-heap.c
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@@ -0,0 +1,396 @@
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+// SPDX-License-Identifier: GPL-2.0
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+
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+#include <dirent.h>
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+#include <errno.h>
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+#include <fcntl.h>
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+#include <stdio.h>
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+#include <stdlib.h>
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+#include <stdint.h>
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+#include <string.h>
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+#include <unistd.h>
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+#include <sys/ioctl.h>
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+#include <sys/mman.h>
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+#include <sys/types.h>
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+
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+#include <linux/dma-buf.h>
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+#include <drm/drm.h>
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+
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+#include "../../../../include/uapi/linux/dma-heap.h"
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+
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+#define DEVPATH "/dev/dma_heap"
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+
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+static int check_vgem(int fd)
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+{
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+ drm_version_t version = { 0 };
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+ char name[5];
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+ int ret;
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+
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+ version.name_len = 4;
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+ version.name = name;
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+
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+ ret = ioctl(fd, DRM_IOCTL_VERSION, &version);
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+ if (ret)
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+ return 0;
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+
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+ return !strcmp(name, "vgem");
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+}
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+
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+static int open_vgem(void)
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+{
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+ int i, fd;
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+ const char *drmstr = "/dev/dri/card";
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+
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+ fd = -1;
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+ for (i = 0; i < 16; i++) {
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+ char name[80];
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+
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+ snprintf(name, 80, "%s%u", drmstr, i);
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+
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+ fd = open(name, O_RDWR);
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+ if (fd < 0)
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+ continue;
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+
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+ if (!check_vgem(fd)) {
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+ close(fd);
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+ fd = -1;
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+ continue;
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+ } else {
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+ break;
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+ }
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+ }
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+ return fd;
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+}
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+
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+static int import_vgem_fd(int vgem_fd, int dma_buf_fd, uint32_t *handle)
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+{
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+ struct drm_prime_handle import_handle = {
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+ .fd = dma_buf_fd,
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+ .flags = 0,
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+ .handle = 0,
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+ };
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+ int ret;
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+
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+ ret = ioctl(vgem_fd, DRM_IOCTL_PRIME_FD_TO_HANDLE, &import_handle);
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+ if (ret == 0)
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+ *handle = import_handle.handle;
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+ return ret;
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+}
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+
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+static void close_handle(int vgem_fd, uint32_t handle)
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+{
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+ struct drm_gem_close close = {
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+ .handle = handle,
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+ };
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+
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+ ioctl(vgem_fd, DRM_IOCTL_GEM_CLOSE, &close);
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+}
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+
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+static int dmabuf_heap_open(char *name)
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+{
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+ int ret, fd;
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+ char buf[256];
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+
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+ ret = snprintf(buf, 256, "%s/%s", DEVPATH, name);
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+ if (ret < 0) {
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+ printf("snprintf failed!\n");
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+ return ret;
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+ }
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+
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+ fd = open(buf, O_RDWR);
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+ if (fd < 0)
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+ printf("open %s failed!\n", buf);
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+ return fd;
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+}
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+
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+static int dmabuf_heap_alloc_fdflags(int fd, size_t len, unsigned int fd_flags,
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+ unsigned int heap_flags, int *dmabuf_fd)
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+{
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+ struct dma_heap_allocation_data data = {
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+ .len = len,
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+ .fd = 0,
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+ .fd_flags = fd_flags,
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+ .heap_flags = heap_flags,
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+ };
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+ int ret;
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+
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+ if (!dmabuf_fd)
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+ return -EINVAL;
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+
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+ ret = ioctl(fd, DMA_HEAP_IOC_ALLOC, &data);
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+ if (ret < 0)
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+ return ret;
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+ *dmabuf_fd = (int)data.fd;
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+ return ret;
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+}
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+
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+static int dmabuf_heap_alloc(int fd, size_t len, unsigned int flags,
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+ int *dmabuf_fd)
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+{
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+ return dmabuf_heap_alloc_fdflags(fd, len, O_RDWR | O_CLOEXEC, flags,
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+ dmabuf_fd);
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+}
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+
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+static void dmabuf_sync(int fd, int start_stop)
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+{
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+ struct dma_buf_sync sync = {
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+ .flags = start_stop | DMA_BUF_SYNC_RW,
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+ };
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+ int ret;
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+
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+ ret = ioctl(fd, DMA_BUF_IOCTL_SYNC, &sync);
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+ if (ret)
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+ printf("sync failed %d\n", errno);
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+}
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+
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+#define ONE_MEG (1024 * 1024)
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+
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+static int test_alloc_and_import(char *heap_name)
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+{
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+ int heap_fd = -1, dmabuf_fd = -1, importer_fd = -1;
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+ uint32_t handle = 0;
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+ void *p = NULL;
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+ int ret;
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+
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+ printf("Testing heap: %s\n", heap_name);
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+
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+ heap_fd = dmabuf_heap_open(heap_name);
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+ if (heap_fd < 0)
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+ return -1;
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+
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+ printf("Allocating 1 MEG\n");
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+ ret = dmabuf_heap_alloc(heap_fd, ONE_MEG, 0, &dmabuf_fd);
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+ if (ret) {
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+ printf("Allocation Failed!\n");
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+ ret = -1;
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+ goto out;
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+ }
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+ /* mmap and write a simple pattern */
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+ p = mmap(NULL,
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+ ONE_MEG,
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+ PROT_READ | PROT_WRITE,
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+ MAP_SHARED,
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+ dmabuf_fd,
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+ 0);
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+ if (p == MAP_FAILED) {
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+ printf("mmap() failed: %m\n");
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+ ret = -1;
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+ goto out;
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+ }
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+ printf("mmap passed\n");
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+
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+ dmabuf_sync(dmabuf_fd, DMA_BUF_SYNC_START);
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+ memset(p, 1, ONE_MEG / 2);
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+ memset((char *)p + ONE_MEG / 2, 0, ONE_MEG / 2);
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+ dmabuf_sync(dmabuf_fd, DMA_BUF_SYNC_END);
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+
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+ importer_fd = open_vgem();
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+ if (importer_fd < 0) {
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+ ret = importer_fd;
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+ printf("Failed to open vgem\n");
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+ goto out;
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+ }
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+
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+ ret = import_vgem_fd(importer_fd, dmabuf_fd, &handle);
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+ if (ret < 0) {
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+ printf("Failed to import buffer\n");
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+ goto out;
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+ }
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+ printf("import passed\n");
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+
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+ dmabuf_sync(dmabuf_fd, DMA_BUF_SYNC_START);
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+ memset(p, 0xff, ONE_MEG);
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+ dmabuf_sync(dmabuf_fd, DMA_BUF_SYNC_END);
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+ printf("syncs passed\n");
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+
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+ close_handle(importer_fd, handle);
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+ ret = 0;
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+
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+out:
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+ if (p)
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+ munmap(p, ONE_MEG);
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+ if (importer_fd >= 0)
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+ close(importer_fd);
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+ if (dmabuf_fd >= 0)
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+ close(dmabuf_fd);
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+ if (heap_fd >= 0)
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+ close(heap_fd);
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+
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+ return ret;
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+}
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+
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+/* Test the ioctl version compatibility w/ a smaller structure then expected */
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+static int dmabuf_heap_alloc_older(int fd, size_t len, unsigned int flags,
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+ int *dmabuf_fd)
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+{
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+ int ret;
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+ unsigned int older_alloc_ioctl;
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+ struct dma_heap_allocation_data_smaller {
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+ __u64 len;
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+ __u32 fd;
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+ __u32 fd_flags;
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+ } data = {
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+ .len = len,
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+ .fd = 0,
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+ .fd_flags = O_RDWR | O_CLOEXEC,
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+ };
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+
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+ older_alloc_ioctl = _IOWR(DMA_HEAP_IOC_MAGIC, 0x0,
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+ struct dma_heap_allocation_data_smaller);
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+ if (!dmabuf_fd)
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+ return -EINVAL;
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+
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+ ret = ioctl(fd, older_alloc_ioctl, &data);
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+ if (ret < 0)
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+ return ret;
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+ *dmabuf_fd = (int)data.fd;
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+ return ret;
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+}
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+
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+/* Test the ioctl version compatibility w/ a larger structure then expected */
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+static int dmabuf_heap_alloc_newer(int fd, size_t len, unsigned int flags,
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+ int *dmabuf_fd)
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+{
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+ int ret;
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+ unsigned int newer_alloc_ioctl;
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+ struct dma_heap_allocation_data_bigger {
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+ __u64 len;
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+ __u32 fd;
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+ __u32 fd_flags;
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+ __u64 heap_flags;
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+ __u64 garbage1;
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+ __u64 garbage2;
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+ __u64 garbage3;
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+ } data = {
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+ .len = len,
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+ .fd = 0,
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+ .fd_flags = O_RDWR | O_CLOEXEC,
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+ .heap_flags = flags,
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+ .garbage1 = 0xffffffff,
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+ .garbage2 = 0x88888888,
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+ .garbage3 = 0x11111111,
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+ };
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+
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+ newer_alloc_ioctl = _IOWR(DMA_HEAP_IOC_MAGIC, 0x0,
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+ struct dma_heap_allocation_data_bigger);
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+ if (!dmabuf_fd)
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+ return -EINVAL;
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+
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+ ret = ioctl(fd, newer_alloc_ioctl, &data);
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+ if (ret < 0)
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+ return ret;
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+
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+ *dmabuf_fd = (int)data.fd;
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+ return ret;
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+}
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+
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+static int test_alloc_compat(char *heap_name)
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+{
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+ int heap_fd = -1, dmabuf_fd = -1;
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+ int ret;
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+
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+ heap_fd = dmabuf_heap_open(heap_name);
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+ if (heap_fd < 0)
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+ return -1;
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+
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+ printf("Testing (theoretical)older alloc compat\n");
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+ ret = dmabuf_heap_alloc_older(heap_fd, ONE_MEG, 0, &dmabuf_fd);
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+ if (ret) {
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+ printf("Older compat allocation failed!\n");
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+ ret = -1;
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+ goto out;
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+ }
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+ close(dmabuf_fd);
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+
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+ printf("Testing (theoretical)newer alloc compat\n");
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+ ret = dmabuf_heap_alloc_newer(heap_fd, ONE_MEG, 0, &dmabuf_fd);
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+ if (ret) {
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+ printf("Newer compat allocation failed!\n");
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+ ret = -1;
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+ goto out;
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+ }
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+ printf("Ioctl compatibility tests passed\n");
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+out:
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+ if (dmabuf_fd >= 0)
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+ close(dmabuf_fd);
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+ if (heap_fd >= 0)
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+ close(heap_fd);
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+
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+ return ret;
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+}
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+
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+static int test_alloc_errors(char *heap_name)
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+{
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+ int heap_fd = -1, dmabuf_fd = -1;
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+ int ret;
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+
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+ heap_fd = dmabuf_heap_open(heap_name);
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+ if (heap_fd < 0)
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+ return -1;
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+
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+ printf("Testing expected error cases\n");
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+ ret = dmabuf_heap_alloc(0, ONE_MEG, 0x111111, &dmabuf_fd);
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+ if (!ret) {
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+ printf("Did not see expected error (invalid fd)!\n");
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+ ret = -1;
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+ goto out;
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+ }
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+
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+ ret = dmabuf_heap_alloc(heap_fd, ONE_MEG, 0x111111, &dmabuf_fd);
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+ if (!ret) {
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+ printf("Did not see expected error (invalid heap flags)!\n");
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+ ret = -1;
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+ goto out;
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+ }
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+
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+ ret = dmabuf_heap_alloc_fdflags(heap_fd, ONE_MEG,
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+ ~(O_RDWR | O_CLOEXEC), 0, &dmabuf_fd);
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+ if (!ret) {
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+ printf("Did not see expected error (invalid fd flags)!\n");
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+ ret = -1;
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+ goto out;
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+ }
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+
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+ printf("Expected error checking passed\n");
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+out:
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+ if (dmabuf_fd >= 0)
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+ close(dmabuf_fd);
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+ if (heap_fd >= 0)
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+ close(heap_fd);
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+
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+ return ret;
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+}
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+
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+int main(void)
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+{
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+ DIR *d;
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+ struct dirent *dir;
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+ int ret = -1;
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+
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+ d = opendir(DEVPATH);
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+ if (!d) {
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+ printf("No %s directory?\n", DEVPATH);
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+ return -1;
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+ }
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+
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+ while ((dir = readdir(d)) != NULL) {
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+ if (!strncmp(dir->d_name, ".", 2))
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+ continue;
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+ if (!strncmp(dir->d_name, "..", 3))
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+ continue;
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+
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+ ret = test_alloc_and_import(dir->d_name);
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+ if (ret)
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+ break;
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+
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+ ret = test_alloc_compat(dir->d_name);
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+ if (ret)
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+ break;
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+
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+ ret = test_alloc_errors(dir->d_name);
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+ if (ret)
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+ break;
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+ }
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+ closedir(d);
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+
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+ return ret;
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+}
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