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drm/radeon: Enable DMA_IB_SWAP_ENABLE on big endian hosts. 

Fixes GPU hang during DMA ring IB test.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=59672

Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Michel Dänzer 2013-01-24 19:02:01 +01:00 committed by Alex Deucher
parent 1da80cfa87
commit b3dfcb207e
2 changed files with 12 additions and 4 deletions
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8
drivers/gpu/drm/radeon/ni.c
View File

@ -1216,7 +1216,7 @@ void cayman_dma_stop(struct radeon_device *rdev)
int cayman_dma_resume(struct radeon_device *rdev)
{
struct radeon_ring *ring;
u32 rb_cntl, dma_cntl;
u32 rb_cntl, dma_cntl, ib_cntl;
u32 rb_bufsz;
u32 reg_offset, wb_offset;
int i, r;
@ -1265,7 +1265,11 @@ int cayman_dma_resume(struct radeon_device *rdev)
WREG32(DMA_RB_BASE + reg_offset, ring->gpu_addr >> 8);
/* enable DMA IBs */
WREG32(DMA_IB_CNTL + reg_offset, DMA_IB_ENABLE | CMD_VMID_FORCE);
ib_cntl = DMA_IB_ENABLE | CMD_VMID_FORCE;
#ifdef __BIG_ENDIAN
ib_cntl |= DMA_IB_SWAP_ENABLE;
#endif
WREG32(DMA_IB_CNTL + reg_offset, ib_cntl);
dma_cntl = RREG32(DMA_CNTL + reg_offset);
dma_cntl &= ~CTXEMPTY_INT_ENABLE;

8
drivers/gpu/drm/radeon/r600.c
View File

@ -2313,7 +2313,7 @@ void r600_dma_stop(struct radeon_device *rdev)
int r600_dma_resume(struct radeon_device *rdev)
{
struct radeon_ring *ring = &rdev->ring[R600_RING_TYPE_DMA_INDEX];
u32 rb_cntl, dma_cntl;
u32 rb_cntl, dma_cntl, ib_cntl;
u32 rb_bufsz;
int r;
@ -2353,7 +2353,11 @@ int r600_dma_resume(struct radeon_device *rdev)
WREG32(DMA_RB_BASE, ring->gpu_addr >> 8);
/* enable DMA IBs */
WREG32(DMA_IB_CNTL, DMA_IB_ENABLE);
ib_cntl = DMA_IB_ENABLE;
#ifdef __BIG_ENDIAN
ib_cntl |= DMA_IB_SWAP_ENABLE;
#endif
WREG32(DMA_IB_CNTL, ib_cntl);
dma_cntl = RREG32(DMA_CNTL);
dma_cntl &= ~CTXEMPTY_INT_ENABLE;