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authorAlex Deucher <alexander.deucher@amd.com>2014-10-13 13:20:02 -0400
committerAlex Deucher <alexander.deucher@amd.com>2014-10-16 18:34:07 -0400
commitadfed2b0587289013f8143c54913ddfd44ac1fd3 (patch)
tree738a650b2b3c88d3a8c5b25315cafa42a1874720 /drivers/gpu/drm/radeon/cik_sdma.c
parent4910403836ded89803fab201d4b5caaa85de3a89 (diff)
downloadblackbird-op-linux-adfed2b0587289013f8143c54913ddfd44ac1fd3.tar.gz
blackbird-op-linux-adfed2b0587289013f8143c54913ddfd44ac1fd3.zip
drm/radeon: use gart memory for DMA ring tests
Avoids HDP cache flush issues when using vram which can cause ring test failures on certain boards. Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: Alexander Fyodorov <halcy@yandex.ru> Cc: stable@vger.kernel.org
Diffstat (limited to 'drivers/gpu/drm/radeon/cik_sdma.c')
-rw-r--r--drivers/gpu/drm/radeon/cik_sdma.c21
1 files changed, 12 insertions, 9 deletions
diff --git a/drivers/gpu/drm/radeon/cik_sdma.c b/drivers/gpu/drm/radeon/cik_sdma.c
index c473c9125295..7deb2ef4da32 100644
--- a/drivers/gpu/drm/radeon/cik_sdma.c
+++ b/drivers/gpu/drm/radeon/cik_sdma.c
@@ -618,16 +618,19 @@ int cik_sdma_ring_test(struct radeon_device *rdev,
{
unsigned i;
int r;
- void __iomem *ptr = (void *)rdev->vram_scratch.ptr;
+ unsigned index;
u32 tmp;
+ u64 gpu_addr;
- if (!ptr) {
- DRM_ERROR("invalid vram scratch pointer\n");
- return -EINVAL;
- }
+ if (ring->idx == R600_RING_TYPE_DMA_INDEX)
+ index = R600_WB_DMA_RING_TEST_OFFSET;
+ else
+ index = CAYMAN_WB_DMA1_RING_TEST_OFFSET;
+
+ gpu_addr = rdev->wb.gpu_addr + index;
tmp = 0xCAFEDEAD;
- writel(tmp, ptr);
+ rdev->wb.wb[index/4] = cpu_to_le32(tmp);
r = radeon_ring_lock(rdev, ring, 5);
if (r) {
@@ -635,14 +638,14 @@ int cik_sdma_ring_test(struct radeon_device *rdev,
return r;
}
radeon_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_WRITE, SDMA_WRITE_SUB_OPCODE_LINEAR, 0));
- radeon_ring_write(ring, rdev->vram_scratch.gpu_addr & 0xfffffffc);
- radeon_ring_write(ring, upper_32_bits(rdev->vram_scratch.gpu_addr));
+ radeon_ring_write(ring, lower_32_bits(gpu_addr));
+ radeon_ring_write(ring, upper_32_bits(gpu_addr));
radeon_ring_write(ring, 1); /* number of DWs to follow */
radeon_ring_write(ring, 0xDEADBEEF);
radeon_ring_unlock_commit(rdev, ring, false);
for (i = 0; i < rdev->usec_timeout; i++) {
- tmp = readl(ptr);
+ tmp = le32_to_cpu(rdev->wb.wb[index/4]);
if (tmp == 0xDEADBEEF)
break;
DRM_UDELAY(1);
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