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-rw-r--r--target/linux/bcm27xx/patches-5.4/950-0726-kselftests-Add-dma-heap-test.patch453
1 files changed, 453 insertions, 0 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
new file mode 100644
index 0000000000..ff4dda9a63
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.4/950-0726-kselftests-Add-dma-heap-test.patch
@@ -0,0 +1,453 @@
+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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