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author | Eric Anholt <eric@anholt.net> | 2014-10-14 11:21:04 +0100 |
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committer | Eric Anholt <eric@anholt.net> | 2014-12-17 16:07:01 -0800 |
commit | 39bc9360116e1c944c1d0d04f67a6ec5f010371f (patch) | |
tree | c241e633ec5bdbdf736b46db9e4b33faaac07e27 /src/gallium/drivers | |
parent | 113044e1b9d8f70a26f826f7c03adcbbc8ecb138 (diff) | |
download | external_mesa3d-39bc9360116e1c944c1d0d04f67a6ec5f010371f.zip external_mesa3d-39bc9360116e1c944c1d0d04f67a6ec5f010371f.tar.gz external_mesa3d-39bc9360116e1c944c1d0d04f67a6ec5f010371f.tar.bz2 |
vc4: Add dmabuf support.
This gets DRI3 working on modesetting with glamor. It's not enabled under
simulation, because it looks like handing our dumb-allocated buffers off
to the server doesn't actually work for the server's rendering.
Diffstat (limited to 'src/gallium/drivers')
-rw-r--r-- | src/gallium/drivers/vc4/vc4_bufmgr.c | 75 | ||||
-rw-r--r-- | src/gallium/drivers/vc4/vc4_bufmgr.h | 3 | ||||
-rw-r--r-- | src/gallium/drivers/vc4/vc4_screen.c | 19 |
3 files changed, 73 insertions, 24 deletions
diff --git a/src/gallium/drivers/vc4/vc4_bufmgr.c b/src/gallium/drivers/vc4/vc4_bufmgr.c index 3b73ac8..64fe2e4 100644 --- a/src/gallium/drivers/vc4/vc4_bufmgr.c +++ b/src/gallium/drivers/vc4/vc4_bufmgr.c @@ -24,6 +24,7 @@ #include <errno.h> #include <err.h> #include <sys/mman.h> +#include <fcntl.h> #include <xf86drm.h> #include <xf86drmMode.h> @@ -88,26 +89,19 @@ vc4_bo_free(struct vc4_bo *bo) free(bo); } -struct vc4_bo * -vc4_bo_open_name(struct vc4_screen *screen, uint32_t name, - uint32_t winsys_stride) +static struct vc4_bo * +vc4_bo_open_handle(struct vc4_screen *screen, + uint32_t winsys_stride, + uint32_t handle, uint32_t size) { struct vc4_bo *bo = CALLOC_STRUCT(vc4_bo); - struct drm_gem_open o; - o.name = name; - int ret = drmIoctl(screen->fd, DRM_IOCTL_GEM_OPEN, &o); - if (ret) { - fprintf(stderr, "Failed to open bo %d: %s\n", - name, strerror(errno)); - free(bo); - return NULL; - } + assert(size); pipe_reference_init(&bo->reference, 1); bo->screen = screen; - bo->handle = o.handle; - bo->size = o.size; + bo->handle = handle; + bo->size = size; bo->name = "winsys"; #ifdef USE_VC4_SIMULATOR @@ -121,6 +115,59 @@ vc4_bo_open_name(struct vc4_screen *screen, uint32_t name, } struct vc4_bo * +vc4_bo_open_name(struct vc4_screen *screen, uint32_t name, + uint32_t winsys_stride) +{ + struct drm_gem_open o = { + .name = name + }; + int ret = drmIoctl(screen->fd, DRM_IOCTL_GEM_OPEN, &o); + if (ret) { + fprintf(stderr, "Failed to open bo %d: %s\n", + name, strerror(errno)); + return NULL; + } + + return vc4_bo_open_handle(screen, winsys_stride, o.handle, o.size); +} + +struct vc4_bo * +vc4_bo_open_dmabuf(struct vc4_screen *screen, int fd, uint32_t winsys_stride) +{ + uint32_t handle; + int ret = drmPrimeFDToHandle(screen->fd, fd, &handle); + int size; + if (ret) { + fprintf(stderr, "Failed to get vc4 handle for dmabuf %d\n", fd); + return NULL; + } + + /* Determine the size of the bo we were handed. */ + size = lseek(fd, 0, SEEK_END); + if (size == -1) { + fprintf(stderr, "Couldn't get size of dmabuf fd %d.\n", fd); + return NULL; + } + + return vc4_bo_open_handle(screen, winsys_stride, handle, size); +} + +int +vc4_bo_get_dmabuf(struct vc4_bo *bo) +{ + int fd; + int ret = drmPrimeHandleToFD(bo->screen->fd, bo->handle, + O_CLOEXEC, &fd); + if (ret != 0) { + fprintf(stderr, "Failed to export gem bo %d to dmabuf\n", + bo->handle); + return -1; + } + + return fd; +} + +struct vc4_bo * vc4_bo_alloc_mem(struct vc4_screen *screen, const void *data, uint32_t size, const char *name) { diff --git a/src/gallium/drivers/vc4/vc4_bufmgr.h b/src/gallium/drivers/vc4/vc4_bufmgr.h index 4a1d4a4..baaecfd 100644 --- a/src/gallium/drivers/vc4/vc4_bufmgr.h +++ b/src/gallium/drivers/vc4/vc4_bufmgr.h @@ -50,7 +50,10 @@ struct vc4_bo *vc4_bo_alloc_mem(struct vc4_screen *screen, const void *data, void vc4_bo_free(struct vc4_bo *bo); struct vc4_bo *vc4_bo_open_name(struct vc4_screen *screen, uint32_t name, uint32_t winsys_stride); +struct vc4_bo *vc4_bo_open_dmabuf(struct vc4_screen *screen, int fd, + uint32_t winsys_stride); bool vc4_bo_flink(struct vc4_bo *bo, uint32_t *name); +int vc4_bo_get_dmabuf(struct vc4_bo *bo); static inline void vc4_bo_set_reference(struct vc4_bo **old_bo, struct vc4_bo *new_bo) diff --git a/src/gallium/drivers/vc4/vc4_screen.c b/src/gallium/drivers/vc4/vc4_screen.c index 98c51c1..b532cc6 100644 --- a/src/gallium/drivers/vc4/vc4_screen.c +++ b/src/gallium/drivers/vc4/vc4_screen.c @@ -482,6 +482,9 @@ vc4_screen_bo_get_handle(struct pipe_screen *pscreen, case DRM_API_HANDLE_TYPE_KMS: whandle->handle = bo->handle; return TRUE; + case DRM_API_HANDLE_TYPE_FD: + whandle->handle = vc4_bo_get_dmabuf(bo); + return whandle->handle != -1; } return FALSE; @@ -492,20 +495,16 @@ vc4_screen_bo_from_handle(struct pipe_screen *pscreen, struct winsys_handle *whandle) { struct vc4_screen *screen = vc4_screen(pscreen); - struct vc4_bo *bo; - if (whandle->type != DRM_API_HANDLE_TYPE_SHARED) { + switch (whandle->type) { + case DRM_API_HANDLE_TYPE_SHARED: + return vc4_bo_open_name(screen, whandle->handle, whandle->stride); + case DRM_API_HANDLE_TYPE_FD: + return vc4_bo_open_dmabuf(screen, whandle->handle, whandle->stride); + default: fprintf(stderr, "Attempt to import unsupported handle type %d\n", whandle->type); return NULL; } - - bo = vc4_bo_open_name(screen, whandle->handle, whandle->stride); - if (!bo) { - fprintf(stderr, "Open name %d failed\n", whandle->handle); - return NULL; - } - - return bo; } |