selftests: ion: Add simple test with the vgem driver (ac93f704) · Commits · 戴 / test

tools/testing/selftests/android/ion/Makefile

+2 −1

Original line number	Diff line number	Diff line
		@@ -2,7 +2,7 @@
		INCLUDEDIR := -I. -I../../../../../drivers/staging/android/uapi/
		CFLAGS := $(CFLAGS) $(INCLUDEDIR) -Wall -O2 -g

		TEST_GEN_FILES := ionapp_export ionapp_import
		TEST_GEN_FILES := ionapp_export ionapp_import ionmap_test

		all: $(TEST_GEN_FILES)

		@@ -14,3 +14,4 @@ include ../../lib.mk

		$(OUTPUT)/ionapp_export: ionapp_export.c ipcsocket.c ionutils.c
		$(OUTPUT)/ionapp_import: ionapp_import.c ipcsocket.c ionutils.c
		$(OUTPUT)/ionmap_test: ionmap_test.c ionutils.c

tools/testing/selftests/android/ion/config

+1 −0

Original line number	Diff line number	Diff line
		@@ -2,3 +2,4 @@ CONFIG_ANDROID=y
		CONFIG_STAGING=y
		CONFIG_ION=y
		CONFIG_ION_SYSTEM_HEAP=y
		CONFIG_DRM_VGEM=y

tools/testing/selftests/android/ion/ionmap_test.c

0 → 100644

+136 −0

Original line number	Diff line number	Diff line
		#include <errno.h>
		#include <fcntl.h>
		#include <stdio.h>
		#include <stdint.h>
		#include <string.h>
		#include <unistd.h>

		#include <sys/ioctl.h>
		#include <sys/types.h>
		#include <sys/stat.h>

		#include <linux/dma-buf.h>

		#include <drm/drm.h>

		#include "ion.h"
		#include "ionutils.h"

		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 1;

		return strcmp(name, "vgem");
		}

		int open_vgem(void)
		{
		int i, fd;
		const char *drmstr = "/dev/dri/card";

		fd = -1;
		for (i = 0; i < 16; i++) {
		char name[80];

		sprintf(name, "%s%u", drmstr, i);

		fd = open(name, O_RDWR);
		if (fd < 0)
		continue;

		if (check_vgem(fd)) {
		close(fd);
		continue;
		} else {
		break;
		}

		}
		return fd;
		}

		int import_vgem_fd(int vgem_fd, int dma_buf_fd, uint32_t *handle)
		{
		struct drm_prime_handle import_handle = { 0 };
		int ret;

		import_handle.fd = dma_buf_fd;
		import_handle.flags = 0;
		import_handle.handle = 0;

		ret = ioctl(vgem_fd, DRM_IOCTL_PRIME_FD_TO_HANDLE, &import_handle);
		if (ret == 0)
		*handle = import_handle.handle;
		return ret;
		}

		void close_handle(int vgem_fd, uint32_t handle)
		{
		struct drm_gem_close close = { 0 };

		close.handle = handle;
		ioctl(vgem_fd, DRM_IOCTL_GEM_CLOSE, &close);
		}

		int main()
		{
		int ret, vgem_fd;
		struct ion_buffer_info info;
		uint32_t handle = 0;
		struct dma_buf_sync sync = { 0 };

		info.heap_type = ION_HEAP_TYPE_SYSTEM;
		info.heap_size = 4096;
		info.flag_type = ION_FLAG_CACHED;

		ret = ion_export_buffer_fd(&info);
		if (ret < 0) {
		printf("ion buffer alloc failed\n");
		return -1;
		}

		vgem_fd = open_vgem();
		if (vgem_fd < 0) {
		ret = vgem_fd;
		printf("Failed to open vgem\n");
		goto out_ion;
		}

		ret = import_vgem_fd(vgem_fd, info.buffd, &handle);

		if (ret < 0) {
		printf("Failed to import buffer\n");
		goto out_vgem;
		}

		sync.flags = DMA_BUF_SYNC_START \| DMA_BUF_SYNC_RW;
		ret = ioctl(info.buffd, DMA_BUF_IOCTL_SYNC, &sync);
		if (ret)
		printf("sync start failed %d\n", errno);

		memset(info.buffer, 0xff, 4096);

		sync.flags = DMA_BUF_SYNC_END \| DMA_BUF_SYNC_RW;
		ret = ioctl(info.buffd, DMA_BUF_IOCTL_SYNC, &sync);
		if (ret)
		printf("sync end failed %d\n", errno);

		close_handle(vgem_fd, handle);
		ret = 0;

		out_vgem:
		close(vgem_fd);
		out_ion:
		ion_close_buffer_fd(&info);
		printf("done.\n");
		return ret;
		}

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