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drm/radeon: Add radeon_test_syncing function v2

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Tests syncing between all rings by using
semaphores and fences.

v2: use radeon_testing as a bit flag rather than on/off switch
    this allow to test for one thing at a time (bo_move or semaphore
    test). It kind of break the usage if user wheren't using 1
    for bo move test but as it's a test feature i believe it's ok.

Signed-off-by: Christian König <deathsimple@vodafone.de>
Reviewed-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Christian König 2011-09-27 12:31:00 +02:00 committed by Dave Airlie
parent bf85279958
commit 60a7e3964d
3 changed files with 96 additions and 1 deletions
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4
drivers/gpu/drm/radeon/radeon.h
View File

@ -913,6 +913,10 @@ void radeon_benchmark(struct radeon_device *rdev, int test_number);
* Testing
*/
void radeon_test_moves(struct radeon_device *rdev);
void radeon_test_ring_sync(struct radeon_device *rdev,
struct radeon_cp *cpA,
struct radeon_cp *cpB);
void radeon_test_syncing(struct radeon_device *rdev);
/*

5
drivers/gpu/drm/radeon/radeon_device.c
View File

@ -823,9 +823,12 @@ int radeon_device_init(struct radeon_device *rdev,
if (r)
return r;
}
if (radeon_testing) {
if ((radeon_testing & 1)) {
radeon_test_moves(rdev);
}
if ((radeon_testing & 2)) {
radeon_test_syncing(rdev);
}
if (radeon_benchmarking) {
radeon_benchmark(rdev, radeon_benchmarking);
}

88
drivers/gpu/drm/radeon/radeon_test.c
View File

@ -234,3 +234,91 @@ void radeon_test_moves(struct radeon_device *rdev)
printk(KERN_WARNING "Error while testing BO move.\n");
}
}
void radeon_test_ring_sync(struct radeon_device *rdev,
struct radeon_cp *cpA,
struct radeon_cp *cpB)
{
struct radeon_fence *fence = NULL;
struct radeon_semaphore *semaphore = NULL;
int ringA = radeon_ring_index(rdev, cpA);
int ringB = radeon_ring_index(rdev, cpB);
int r;
r = radeon_fence_create(rdev, &fence, ringA);
if (r) {
DRM_ERROR("Failed to create sync fence\n");
goto out_cleanup;
}
r = radeon_semaphore_create(rdev, &semaphore);
if (r) {
DRM_ERROR("Failed to create semaphore\n");
goto out_cleanup;
}
r = radeon_ring_lock(rdev, cpA, 64);
if (r) {
DRM_ERROR("Failed to lock ring %d\n", ringA);
goto out_cleanup;
}
radeon_semaphore_emit_wait(rdev, ringA, semaphore);
radeon_fence_emit(rdev, fence);
radeon_ring_unlock_commit(rdev, cpA);
mdelay(1000);
if (radeon_fence_signaled(fence)) {
DRM_ERROR("Fence signaled without waiting for semaphore.\n");
goto out_cleanup;
}
r = radeon_ring_lock(rdev, cpB, 64);
if (r) {
DRM_ERROR("Failed to lock ring %d\n", ringB);
goto out_cleanup;
}
radeon_semaphore_emit_signal(rdev, ringB, semaphore);
radeon_ring_unlock_commit(rdev, cpB);
r = radeon_fence_wait(fence, false);
if (r) {
DRM_ERROR("Failed to wait for sync fence\n");
goto out_cleanup;
}
DRM_INFO("Syncing between rings %d and %d seems to work.\n", ringA, ringB);
out_cleanup:
if (semaphore)
radeon_semaphore_free(rdev, semaphore);
if (fence)
radeon_fence_unref(&fence);
if (r)
printk(KERN_WARNING "Error while testing ring sync (%d).\n", r);
}
void radeon_test_syncing(struct radeon_device *rdev)
{
int i, j;
for (i = 1; i < RADEON_NUM_RINGS; ++i) {
struct radeon_cp *cpA = &rdev->cp[i];
if (!cpA->ready)
continue;
for (j = 0; j < i; ++j) {
struct radeon_cp *cpB = &rdev->cp[j];
if (!cpB->ready)
continue;
DRM_INFO("Testing syncing between rings %d and %d\n", i, j);
radeon_test_ring_sync(rdev, cpA, cpB);
DRM_INFO("Testing syncing between rings %d and %d\n", j, i);
radeon_test_ring_sync(rdev, cpB, cpA);
}
}
}