diff options
Diffstat (limited to 'drivers/gpu/drm/radeon/ni_dma.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/ni_dma.c | 77 |
1 files changed, 75 insertions, 2 deletions
diff --git a/drivers/gpu/drm/radeon/ni_dma.c b/drivers/gpu/drm/radeon/ni_dma.c index bdeb65ed365..7cf96b15377 100644 --- a/drivers/gpu/drm/radeon/ni_dma.c +++ b/drivers/gpu/drm/radeon/ni_dma.c @@ -43,6 +43,75 @@ u32 cayman_gpu_check_soft_reset(struct radeon_device *rdev); */ /** + * cayman_dma_get_rptr - get the current read pointer + * + * @rdev: radeon_device pointer + * @ring: radeon ring pointer + * + * Get the current rptr from the hardware (cayman+). + */ +uint32_t cayman_dma_get_rptr(struct radeon_device *rdev, + struct radeon_ring *ring) +{ + u32 rptr, reg; + + if (rdev->wb.enabled) { + rptr = rdev->wb.wb[ring->rptr_offs/4]; + } else { + if (ring->idx == R600_RING_TYPE_DMA_INDEX) + reg = DMA_RB_RPTR + DMA0_REGISTER_OFFSET; + else + reg = DMA_RB_RPTR + DMA1_REGISTER_OFFSET; + + rptr = RREG32(reg); + } + + return (rptr & 0x3fffc) >> 2; +} + +/** + * cayman_dma_get_wptr - get the current write pointer + * + * @rdev: radeon_device pointer + * @ring: radeon ring pointer + * + * Get the current wptr from the hardware (cayman+). + */ +uint32_t cayman_dma_get_wptr(struct radeon_device *rdev, + struct radeon_ring *ring) +{ + u32 reg; + + if (ring->idx == R600_RING_TYPE_DMA_INDEX) + reg = DMA_RB_WPTR + DMA0_REGISTER_OFFSET; + else + reg = DMA_RB_WPTR + DMA1_REGISTER_OFFSET; + + return (RREG32(reg) & 0x3fffc) >> 2; +} + +/** + * cayman_dma_set_wptr - commit the write pointer + * + * @rdev: radeon_device pointer + * @ring: radeon ring pointer + * + * Write the wptr back to the hardware (cayman+). + */ +void cayman_dma_set_wptr(struct radeon_device *rdev, + struct radeon_ring *ring) +{ + u32 reg; + + if (ring->idx == R600_RING_TYPE_DMA_INDEX) + reg = DMA_RB_WPTR + DMA0_REGISTER_OFFSET; + else + reg = DMA_RB_WPTR + DMA1_REGISTER_OFFSET; + + WREG32(reg, (ring->wptr << 2) & 0x3fffc); +} + +/** * cayman_dma_ring_ib_execute - Schedule an IB on the DMA engine * * @rdev: radeon_device pointer @@ -88,7 +157,9 @@ void cayman_dma_stop(struct radeon_device *rdev) { u32 rb_cntl; - radeon_ttm_set_active_vram_size(rdev, rdev->mc.visible_vram_size); + if ((rdev->asic->copy.copy_ring_index == R600_RING_TYPE_DMA_INDEX) || + (rdev->asic->copy.copy_ring_index == CAYMAN_RING_TYPE_DMA1_INDEX)) + radeon_ttm_set_active_vram_size(rdev, rdev->mc.visible_vram_size); /* dma0 */ rb_cntl = RREG32(DMA_RB_CNTL + DMA0_REGISTER_OFFSET); @@ -190,7 +261,9 @@ int cayman_dma_resume(struct radeon_device *rdev) } } - radeon_ttm_set_active_vram_size(rdev, rdev->mc.real_vram_size); + if ((rdev->asic->copy.copy_ring_index == R600_RING_TYPE_DMA_INDEX) || + (rdev->asic->copy.copy_ring_index == CAYMAN_RING_TYPE_DMA1_INDEX)) + radeon_ttm_set_active_vram_size(rdev, rdev->mc.real_vram_size); return 0; } |