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fix[drm]: Fix permission check issue on GKI kernel

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The GKI kernel does not allow non-render thread to open /dev/dri/card0
and alloc drm buffer from it. So we need to use /dev/dri/renderD128
instead.

Signed-off-by: Herman Chen <herman.chen@rock-chips.com>
Change-Id: I0fad306c6eeadd8da5507883f4f4915c11946761
This commit is contained in:
Herman Chen
2024-06-07 14:46:25 +08:00
parent 50f108baf2
commit 9c92ab9e20
2 changed files with 20 additions and 5 deletions
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21
osal/allocator/allocator_drm.c
View File

@@ -69,7 +69,11 @@ typedef struct {
RK_U32 flags;
} allocator_ctx_drm;
static const char *dev_drm = "/dev/dri/card0";
/* use renderD128 first to avoid GKI kernel permission issue */
static const char *dev_drm[] = {
"/dev/dri/renderD128",
"/dev/dri/card0",
};
static RK_U32 to_rockchip_gem_mem_flag(RK_U32 flags)
{
@@ -164,8 +168,9 @@ static int drm_free(int fd, RK_U32 handle)
static MPP_RET os_allocator_drm_open(void **ctx, size_t alignment, MppAllocFlagType flags)
{
RK_S32 fd;
allocator_ctx_drm *p;
RK_S32 fd;
RK_S32 i;
if (NULL == ctx) {
mpp_err_f("does not accept NULL input\n");
@@ -176,9 +181,17 @@ static MPP_RET os_allocator_drm_open(void **ctx, size_t alignment, MppAllocFlagT
mpp_env_get_u32("drm_debug", &drm_debug, 0);
fd = open(dev_drm, O_RDWR | O_CLOEXEC);
for (i = 0; i < (RK_S32)MPP_ARRAY_ELEMS(dev_drm); i++) {
fd = open(dev_drm[i], O_RDWR | O_CLOEXEC);
if (fd > 0)
break;
}
if (fd < 0) {
mpp_err_f("open %s failed!\n", dev_drm);
mpp_err_f("open all drm device failed.\n");
mpp_err("Please check the following device path and access permission:\n");
for (i = 0; i < (RK_S32)MPP_ARRAY_ELEMS(dev_drm); i++)
mpp_err("%s\n", dev_drm[i]);
return MPP_ERR_UNKNOW;
}

4
osal/mpp_runtime.cpp
View File

@@ -85,7 +85,9 @@ MppRuntimeService::MppRuntimeService()
allocator_valid[MPP_BUFFER_TYPE_NORMAL] = 1;
allocator_valid[MPP_BUFFER_TYPE_ION] = !access("/dev/ion", F_OK | R_OK | W_OK);
allocator_valid[MPP_BUFFER_TYPE_DRM] = !access("/dev/dri/card0", F_OK | R_OK | W_OK);
allocator_valid[MPP_BUFFER_TYPE_DRM] =
!access("/dev/dri/renderD128", F_OK | R_OK | W_OK) ||
!access("/dev/dri/card0", F_OK | R_OK | W_OK);
allocator_valid[MPP_BUFFER_TYPE_DMA_HEAP] = !access("/dev/dma_heap", F_OK | R_OK);
if (!allocator_valid[MPP_BUFFER_TYPE_ION] &&