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lib: Add read/write direction support for dmabuf synchronisation

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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>
This commit is contained in:
Chris Wilson
2016-02-25 21:43:01 +00:00
parent 925e5e1cae
commit aed69b56d4
5 changed files with 21 additions and 15 deletions
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tests/gem_concurrent_all.c
+4 -4
View File
@@ -365,10 +365,10 @@ dmabuf_set_bo(struct buffers *b, drm_intel_bo *bo, uint32_t val)
uint32_t *v;
int size;
prime_sync_start(dmabuf->fd);
prime_sync_start(dmabuf->fd, true);
for (v = dmabuf->map, size = b->size; size--; v++)
*v = val;
prime_sync_end(dmabuf->fd);
prime_sync_end(dmabuf->fd, true);
}
static void
@@ -378,10 +378,10 @@ dmabuf_cmp_bo(struct buffers *b, drm_intel_bo *bo, uint32_t val)
uint32_t *v;
int size;
prime_sync_start(dmabuf->fd);
prime_sync_start(dmabuf->fd, false);
for (v = dmabuf->map, size = b->size; size--; v++)
igt_assert_eq_u32(*v, val);
prime_sync_end(dmabuf->fd);
prime_sync_end(dmabuf->fd, false);
}
static void
tests/kms_mmap_write_crc.c
+3 -3
View File
@@ -110,7 +110,7 @@ static void test(data_t *data)
* firstly demonstrate the need for DMA_BUF_SYNC_START ("begin_cpu_access")
*/
if (ioctl_sync)
prime_sync_start(dma_buf_fd);
prime_sync_start(dma_buf_fd, true);
/* use dmabuf pointer to make the other fb all white too */
buf = malloc(fb->size);
@@ -142,7 +142,7 @@ static void test(data_t *data)
/* sync start, to move to CPU domain */
if (ioctl_sync)
prime_sync_start(dma_buf_fd);
prime_sync_start(dma_buf_fd, true);
/* use dmabuf pointer in the same fb to make it all white */
buf = malloc(fb->size);
@@ -154,7 +154,7 @@ static void test(data_t *data)
/* if we don't change to the GTT domain again, the whites won't get flushed
* and therefore we demonstrates the need for sync end here */
if (ioctl_sync)
prime_sync_end(dma_buf_fd);
prime_sync_end(dma_buf_fd, true);
/* check that the crc is as expected, which requires that caches got flushed */
igt_pipe_crc_collect_crc(data->pipe_crc, &crc);
tests/prime_mmap_coherency.c
+2 -2
View File
@@ -97,7 +97,7 @@ static void test_read_flush(bool expect_stale_cache)
* until we try to read them again in step #4. This behavior could be fixed
* by flush CPU read right before accessing the CPU pointer */
if (!expect_stale_cache)
prime_sync_start(dma_buf_fd);
prime_sync_start(dma_buf_fd, false);
for (i = 0; i < (width * height) / 4; i++)
if (ptr_cpu[i] != 0x11111111) {
@@ -149,7 +149,7 @@ static void test_write_flush(bool expect_stale_cache)
/* This is the main point of this test: !llc hw requires a cache write
* flush right here (explained in step #4). */
if (!expect_stale_cache)
prime_sync_start(dma_buf_fd);
prime_sync_start(dma_buf_fd, true);
memset(ptr_cpu, 0x11, width * height);