diff options
| author | Chris Wilson <chris@chris-wilson.co.uk> | 2016-02-25 21:43:01 +0000 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2016-03-01 13:25:07 +0000 |
| commit | aed69b56d4c63a19594440be6679307b2781ae2c (patch) | |
| tree | c378ad1952669e651c11a89e1e2136a70db06fb7 /lib | |
| parent | 925e5e1caef9b56bd53df457735514b644c7a399 (diff) | |
lib: Add read/write direction support for dmabuf synchronisation
Allow read-only synchronisation on dmabuf mmaps, useful to allow
concurrent read-read testing between the CPU and GPU.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/ioctl_wrappers.c | 14 | ||||
| -rw-r--r-- | lib/ioctl_wrappers.h | 4 |
2 files changed, 12 insertions, 6 deletions
diff --git a/lib/ioctl_wrappers.c b/lib/ioctl_wrappers.c index 40712606..5d497293 100644 --- a/lib/ioctl_wrappers.c +++ b/lib/ioctl_wrappers.c @@ -1539,12 +1539,15 @@ off_t prime_get_size(int dma_buf_fd) * prime_sync_start * @dma_buf_fd: dma-buf fd handle */ -void prime_sync_start(int dma_buf_fd) +void prime_sync_start(int dma_buf_fd, bool write) { struct local_dma_buf_sync sync_start; memset(&sync_start, 0, sizeof(sync_start)); - sync_start.flags = LOCAL_DMA_BUF_SYNC_START | LOCAL_DMA_BUF_SYNC_RW; + sync_start.flags = LOCAL_DMA_BUF_SYNC_START; + sync_start.flags |= LOCAL_DMA_BUF_SYNC_READ; + if (write) + sync_start.flags |= LOCAL_DMA_BUF_SYNC_WRITE; do_ioctl(dma_buf_fd, LOCAL_DMA_BUF_IOCTL_SYNC, &sync_start); } @@ -1552,12 +1555,15 @@ void prime_sync_start(int dma_buf_fd) * prime_sync_end * @dma_buf_fd: dma-buf fd handle */ -void prime_sync_end(int dma_buf_fd) +void prime_sync_end(int dma_buf_fd, bool write) { struct local_dma_buf_sync sync_end; memset(&sync_end, 0, sizeof(sync_end)); - sync_end.flags = LOCAL_DMA_BUF_SYNC_END | LOCAL_DMA_BUF_SYNC_RW; + sync_end.flags = LOCAL_DMA_BUF_SYNC_END; + sync_end.flags |= LOCAL_DMA_BUF_SYNC_READ; + if (write) + sync_end.flags |= LOCAL_DMA_BUF_SYNC_WRITE; do_ioctl(dma_buf_fd, LOCAL_DMA_BUF_IOCTL_SYNC, &sync_end); } diff --git a/lib/ioctl_wrappers.h b/lib/ioctl_wrappers.h index dc0827a1..f59eafba 100644 --- a/lib/ioctl_wrappers.h +++ b/lib/ioctl_wrappers.h @@ -177,8 +177,8 @@ int prime_handle_to_fd(int fd, uint32_t handle); int prime_handle_to_fd_for_mmap(int fd, uint32_t handle); uint32_t prime_fd_to_handle(int fd, int dma_buf_fd); off_t prime_get_size(int dma_buf_fd); -void prime_sync_start(int dma_buf_fd); -void prime_sync_end(int dma_buf_fd); +void prime_sync_start(int dma_buf_fd, bool write); +void prime_sync_end(int dma_buf_fd, bool write); /* addfb2 fb modifiers */ struct local_drm_mode_fb_cmd2 { |