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-rw-r--r--target/linux/bcm27xx/patches-5.4/950-0726-kselftests-Add-dma-heap-test.patch453
1 files changed, 0 insertions, 453 deletions
diff --git a/target/linux/bcm27xx/patches-5.4/950-0726-kselftests-Add-dma-heap-test.patch b/target/linux/bcm27xx/patches-5.4/950-0726-kselftests-Add-dma-heap-test.patch
deleted file mode 100644
index ff4dda9a63..0000000000
--- a/target/linux/bcm27xx/patches-5.4/950-0726-kselftests-Add-dma-heap-test.patch
+++ /dev/null
@@ -1,453 +0,0 @@
-From 31501b71a0237f3753d0210e3e122c548d6f3051 Mon Sep 17 00:00:00 2001
-From: John Stultz <john.stultz@linaro.org>
-Date: Tue, 3 Dec 2019 17:26:41 +0000
-Subject: [PATCH] kselftests: Add dma-heap test
-
-Commit a8779927fd86c91f5400bfcbccfa018a667d8350 upstream.
-
-Add very trivial allocation and import test for dma-heaps,
-utilizing the vgem driver as a test importer.
-
-A good chunk of this code taken from:
- tools/testing/selftests/android/ion/ionmap_test.c
- Originally by Laura Abbott <labbott@redhat.com>
-
-Cc: Benjamin Gaignard <benjamin.gaignard@linaro.org>
-Cc: Sumit Semwal <sumit.semwal@linaro.org>
-Cc: Liam Mark <lmark@codeaurora.org>
-Cc: Pratik Patel <pratikp@codeaurora.org>
-Cc: Brian Starkey <Brian.Starkey@arm.com>
-Cc: Vincent Donnefort <Vincent.Donnefort@arm.com>
-Cc: Sudipto Paul <Sudipto.Paul@arm.com>
-Cc: Andrew F. Davis <afd@ti.com>
-Cc: Christoph Hellwig <hch@infradead.org>
-Cc: Chenbo Feng <fengc@google.com>
-Cc: Alistair Strachan <astrachan@google.com>
-Cc: Hridya Valsaraju <hridya@google.com>
-Cc: Sandeep Patil <sspatil@google.com>
-Cc: Hillf Danton <hdanton@sina.com>
-Cc: Dave Airlie <airlied@gmail.com>
-Cc: dri-devel@lists.freedesktop.org
-Reviewed-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
-Reviewed-by: Brian Starkey <brian.starkey@arm.com>
-Acked-by: Sandeep Patil <sspatil@android.com>
-Acked-by: Laura Abbott <labbott@redhat.com>
-Tested-by: Ayan Kumar Halder <ayan.halder@arm.com>
-Signed-off-by: John Stultz <john.stultz@linaro.org>
-Signed-off-by: Sumit Semwal <sumit.semwal@linaro.org>
-Link: https://patchwork.freedesktop.org/patch/msgid/20191203172641.66642-6-john.stultz@linaro.org
----
- tools/testing/selftests/dmabuf-heaps/Makefile | 6 +
- .../selftests/dmabuf-heaps/dmabuf-heap.c | 396 ++++++++++++++++++
- 2 files changed, 402 insertions(+)
- create mode 100644 tools/testing/selftests/dmabuf-heaps/Makefile
- create mode 100644 tools/testing/selftests/dmabuf-heaps/dmabuf-heap.c
-
---- /dev/null
-+++ b/tools/testing/selftests/dmabuf-heaps/Makefile
-@@ -0,0 +1,6 @@
-+# SPDX-License-Identifier: GPL-2.0
-+CFLAGS += -static -O3 -Wl,-no-as-needed -Wall -I../../../../usr/include
-+
-+TEST_GEN_PROGS = dmabuf-heap
-+
-+include ../lib.mk
---- /dev/null
-+++ b/tools/testing/selftests/dmabuf-heaps/dmabuf-heap.c
-@@ -0,0 +1,396 @@
-+// SPDX-License-Identifier: GPL-2.0
-+
-+#include <dirent.h>
-+#include <errno.h>
-+#include <fcntl.h>
-+#include <stdio.h>
-+#include <stdlib.h>
-+#include <stdint.h>
-+#include <string.h>
-+#include <unistd.h>
-+#include <sys/ioctl.h>
-+#include <sys/mman.h>
-+#include <sys/types.h>
-+
-+#include <linux/dma-buf.h>
-+#include <drm/drm.h>
-+
-+#include "../../../../include/uapi/linux/dma-heap.h"
-+
-+#define DEVPATH "/dev/dma_heap"
-+
-+static int check_vgem(int fd)
-+{
-+ drm_version_t version = { 0 };
-+ char name[5];
-+ int ret;
-+
-+ version.name_len = 4;
-+ version.name = name;
-+
-+ ret = ioctl(fd, DRM_IOCTL_VERSION, &version);
-+ if (ret)
-+ return 0;
-+
-+ return !strcmp(name, "vgem");
-+}
-+
-+static int open_vgem(void)
-+{
-+ int i, fd;
-+ const char *drmstr = "/dev/dri/card";
-+
-+ fd = -1;
-+ for (i = 0; i < 16; i++) {
-+ char name[80];
-+
-+ snprintf(name, 80, "%s%u", drmstr, i);
-+
-+ fd = open(name, O_RDWR);
-+ if (fd < 0)
-+ continue;
-+
-+ if (!check_vgem(fd)) {
-+ close(fd);
-+ fd = -1;
-+ continue;
-+ } else {
-+ break;
-+ }
-+ }
-+ return fd;
-+}
-+
-+static int import_vgem_fd(int vgem_fd, int dma_buf_fd, uint32_t *handle)
-+{
-+ struct drm_prime_handle import_handle = {
-+ .fd = dma_buf_fd,
-+ .flags = 0,
-+ .handle = 0,
-+ };
-+ int ret;
-+
-+ ret = ioctl(vgem_fd, DRM_IOCTL_PRIME_FD_TO_HANDLE, &import_handle);
-+ if (ret == 0)
-+ *handle = import_handle.handle;
-+ return ret;
-+}
-+
-+static void close_handle(int vgem_fd, uint32_t handle)
-+{
-+ struct drm_gem_close close = {
-+ .handle = handle,
-+ };
-+
-+ ioctl(vgem_fd, DRM_IOCTL_GEM_CLOSE, &close);
-+}
-+
-+static int dmabuf_heap_open(char *name)
-+{
-+ int ret, fd;
-+ char buf[256];
-+
-+ ret = snprintf(buf, 256, "%s/%s", DEVPATH, name);
-+ if (ret < 0) {
-+ printf("snprintf failed!\n");
-+ return ret;
-+ }
-+
-+ fd = open(buf, O_RDWR);
-+ if (fd < 0)
-+ printf("open %s failed!\n", buf);
-+ return fd;
-+}
-+
-+static int dmabuf_heap_alloc_fdflags(int fd, size_t len, unsigned int fd_flags,
-+ unsigned int heap_flags, int *dmabuf_fd)
-+{
-+ struct dma_heap_allocation_data data = {
-+ .len = len,
-+ .fd = 0,
-+ .fd_flags = fd_flags,
-+ .heap_flags = heap_flags,
-+ };
-+ int ret;
-+
-+ if (!dmabuf_fd)
-+ return -EINVAL;
-+
-+ ret = ioctl(fd, DMA_HEAP_IOC_ALLOC, &data);
-+ if (ret < 0)
-+ return ret;
-+ *dmabuf_fd = (int)data.fd;
-+ return ret;
-+}
-+
-+static int dmabuf_heap_alloc(int fd, size_t len, unsigned int flags,
-+ int *dmabuf_fd)
-+{
-+ return dmabuf_heap_alloc_fdflags(fd, len, O_RDWR | O_CLOEXEC, flags,
-+ dmabuf_fd);
-+}
-+
-+static void dmabuf_sync(int fd, int start_stop)
-+{
-+ struct dma_buf_sync sync = {
-+ .flags = start_stop | DMA_BUF_SYNC_RW,
-+ };
-+ int ret;
-+
-+ ret = ioctl(fd, DMA_BUF_IOCTL_SYNC, &sync);
-+ if (ret)
-+ printf("sync failed %d\n", errno);
-+}
-+
-+#define ONE_MEG (1024 * 1024)
-+
-+static int test_alloc_and_import(char *heap_name)
-+{
-+ int heap_fd = -1, dmabuf_fd = -1, importer_fd = -1;
-+ uint32_t handle = 0;
-+ void *p = NULL;
-+ int ret;
-+
-+ printf("Testing heap: %s\n", heap_name);
-+
-+ heap_fd = dmabuf_heap_open(heap_name);
-+ if (heap_fd < 0)
-+ return -1;
-+
-+ printf("Allocating 1 MEG\n");
-+ ret = dmabuf_heap_alloc(heap_fd, ONE_MEG, 0, &dmabuf_fd);
-+ if (ret) {
-+ printf("Allocation Failed!\n");
-+ ret = -1;
-+ goto out;
-+ }
-+ /* mmap and write a simple pattern */
-+ p = mmap(NULL,
-+ ONE_MEG,
-+ PROT_READ | PROT_WRITE,
-+ MAP_SHARED,
-+ dmabuf_fd,
-+ 0);
-+ if (p == MAP_FAILED) {
-+ printf("mmap() failed: %m\n");
-+ ret = -1;
-+ goto out;
-+ }
-+ printf("mmap passed\n");
-+
-+ dmabuf_sync(dmabuf_fd, DMA_BUF_SYNC_START);
-+ memset(p, 1, ONE_MEG / 2);
-+ memset((char *)p + ONE_MEG / 2, 0, ONE_MEG / 2);
-+ dmabuf_sync(dmabuf_fd, DMA_BUF_SYNC_END);
-+
-+ importer_fd = open_vgem();
-+ if (importer_fd < 0) {
-+ ret = importer_fd;
-+ printf("Failed to open vgem\n");
-+ goto out;
-+ }
-+
-+ ret = import_vgem_fd(importer_fd, dmabuf_fd, &handle);
-+ if (ret < 0) {
-+ printf("Failed to import buffer\n");
-+ goto out;
-+ }
-+ printf("import passed\n");
-+
-+ dmabuf_sync(dmabuf_fd, DMA_BUF_SYNC_START);
-+ memset(p, 0xff, ONE_MEG);
-+ dmabuf_sync(dmabuf_fd, DMA_BUF_SYNC_END);
-+ printf("syncs passed\n");
-+
-+ close_handle(importer_fd, handle);
-+ ret = 0;
-+
-+out:
-+ if (p)
-+ munmap(p, ONE_MEG);
-+ if (importer_fd >= 0)
-+ close(importer_fd);
-+ if (dmabuf_fd >= 0)
-+ close(dmabuf_fd);
-+ if (heap_fd >= 0)
-+ close(heap_fd);
-+
-+ return ret;
-+}
-+
-+/* Test the ioctl version compatibility w/ a smaller structure then expected */
-+static int dmabuf_heap_alloc_older(int fd, size_t len, unsigned int flags,
-+ int *dmabuf_fd)
-+{
-+ int ret;
-+ unsigned int older_alloc_ioctl;
-+ struct dma_heap_allocation_data_smaller {
-+ __u64 len;
-+ __u32 fd;
-+ __u32 fd_flags;
-+ } data = {
-+ .len = len,
-+ .fd = 0,
-+ .fd_flags = O_RDWR | O_CLOEXEC,
-+ };
-+
-+ older_alloc_ioctl = _IOWR(DMA_HEAP_IOC_MAGIC, 0x0,
-+ struct dma_heap_allocation_data_smaller);
-+ if (!dmabuf_fd)
-+ return -EINVAL;
-+
-+ ret = ioctl(fd, older_alloc_ioctl, &data);
-+ if (ret < 0)
-+ return ret;
-+ *dmabuf_fd = (int)data.fd;
-+ return ret;
-+}
-+
-+/* Test the ioctl version compatibility w/ a larger structure then expected */
-+static int dmabuf_heap_alloc_newer(int fd, size_t len, unsigned int flags,
-+ int *dmabuf_fd)
-+{
-+ int ret;
-+ unsigned int newer_alloc_ioctl;
-+ struct dma_heap_allocation_data_bigger {
-+ __u64 len;
-+ __u32 fd;
-+ __u32 fd_flags;
-+ __u64 heap_flags;
-+ __u64 garbage1;
-+ __u64 garbage2;
-+ __u64 garbage3;
-+ } data = {
-+ .len = len,
-+ .fd = 0,
-+ .fd_flags = O_RDWR | O_CLOEXEC,
-+ .heap_flags = flags,
-+ .garbage1 = 0xffffffff,
-+ .garbage2 = 0x88888888,
-+ .garbage3 = 0x11111111,
-+ };
-+
-+ newer_alloc_ioctl = _IOWR(DMA_HEAP_IOC_MAGIC, 0x0,
-+ struct dma_heap_allocation_data_bigger);
-+ if (!dmabuf_fd)
-+ return -EINVAL;
-+
-+ ret = ioctl(fd, newer_alloc_ioctl, &data);
-+ if (ret < 0)
-+ return ret;
-+
-+ *dmabuf_fd = (int)data.fd;
-+ return ret;
-+}
-+
-+static int test_alloc_compat(char *heap_name)
-+{
-+ int heap_fd = -1, dmabuf_fd = -1;
-+ int ret;
-+
-+ heap_fd = dmabuf_heap_open(heap_name);
-+ if (heap_fd < 0)
-+ return -1;
-+
-+ printf("Testing (theoretical)older alloc compat\n");
-+ ret = dmabuf_heap_alloc_older(heap_fd, ONE_MEG, 0, &dmabuf_fd);
-+ if (ret) {
-+ printf("Older compat allocation failed!\n");
-+ ret = -1;
-+ goto out;
-+ }
-+ close(dmabuf_fd);
-+
-+ printf("Testing (theoretical)newer alloc compat\n");
-+ ret = dmabuf_heap_alloc_newer(heap_fd, ONE_MEG, 0, &dmabuf_fd);
-+ if (ret) {
-+ printf("Newer compat allocation failed!\n");
-+ ret = -1;
-+ goto out;
-+ }
-+ printf("Ioctl compatibility tests passed\n");
-+out:
-+ if (dmabuf_fd >= 0)
-+ close(dmabuf_fd);
-+ if (heap_fd >= 0)
-+ close(heap_fd);
-+
-+ return ret;
-+}
-+
-+static int test_alloc_errors(char *heap_name)
-+{
-+ int heap_fd = -1, dmabuf_fd = -1;
-+ int ret;
-+
-+ heap_fd = dmabuf_heap_open(heap_name);
-+ if (heap_fd < 0)
-+ return -1;
-+
-+ printf("Testing expected error cases\n");
-+ ret = dmabuf_heap_alloc(0, ONE_MEG, 0x111111, &dmabuf_fd);
-+ if (!ret) {
-+ printf("Did not see expected error (invalid fd)!\n");
-+ ret = -1;
-+ goto out;
-+ }
-+
-+ ret = dmabuf_heap_alloc(heap_fd, ONE_MEG, 0x111111, &dmabuf_fd);
-+ if (!ret) {
-+ printf("Did not see expected error (invalid heap flags)!\n");
-+ ret = -1;
-+ goto out;
-+ }
-+
-+ ret = dmabuf_heap_alloc_fdflags(heap_fd, ONE_MEG,
-+ ~(O_RDWR | O_CLOEXEC), 0, &dmabuf_fd);
-+ if (!ret) {
-+ printf("Did not see expected error (invalid fd flags)!\n");
-+ ret = -1;
-+ goto out;
-+ }
-+
-+ printf("Expected error checking passed\n");
-+out:
-+ if (dmabuf_fd >= 0)
-+ close(dmabuf_fd);
-+ if (heap_fd >= 0)
-+ close(heap_fd);
-+
-+ return ret;
-+}
-+
-+int main(void)
-+{
-+ DIR *d;
-+ struct dirent *dir;
-+ int ret = -1;
-+
-+ d = opendir(DEVPATH);
-+ if (!d) {
-+ printf("No %s directory?\n", DEVPATH);
-+ return -1;
-+ }
-+
-+ while ((dir = readdir(d)) != NULL) {
-+ if (!strncmp(dir->d_name, ".", 2))
-+ continue;
-+ if (!strncmp(dir->d_name, "..", 3))
-+ continue;
-+
-+ ret = test_alloc_and_import(dir->d_name);
-+ if (ret)
-+ break;
-+
-+ ret = test_alloc_compat(dir->d_name);
-+ if (ret)
-+ break;
-+
-+ ret = test_alloc_errors(dir->d_name);
-+ if (ret)
-+ break;
-+ }
-+ closedir(d);
-+
-+ return ret;
-+}
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