diff options
Diffstat (limited to 'drivers/gpu/drm/radeon/cik_sdma.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/cik_sdma.c | 120 |
1 files changed, 106 insertions, 14 deletions
diff --git a/drivers/gpu/drm/radeon/cik_sdma.c b/drivers/gpu/drm/radeon/cik_sdma.c index d08b83c6267b..1ecb3f1070e3 100644 --- a/drivers/gpu/drm/radeon/cik_sdma.c +++ b/drivers/gpu/drm/radeon/cik_sdma.c @@ -52,6 +52,75 @@ u32 cik_gpu_check_soft_reset(struct radeon_device *rdev); */ /** + * cik_sdma_get_rptr - get the current read pointer + * + * @rdev: radeon_device pointer + * @ring: radeon ring pointer + * + * Get the current rptr from the hardware (CIK+). + */ +uint32_t cik_sdma_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 = SDMA0_GFX_RB_RPTR + SDMA0_REGISTER_OFFSET; + else + reg = SDMA0_GFX_RB_RPTR + SDMA1_REGISTER_OFFSET; + + rptr = RREG32(reg); + } + + return (rptr & 0x3fffc) >> 2; +} + +/** + * cik_sdma_get_wptr - get the current write pointer + * + * @rdev: radeon_device pointer + * @ring: radeon ring pointer + * + * Get the current wptr from the hardware (CIK+). + */ +uint32_t cik_sdma_get_wptr(struct radeon_device *rdev, + struct radeon_ring *ring) +{ + u32 reg; + + if (ring->idx == R600_RING_TYPE_DMA_INDEX) + reg = SDMA0_GFX_RB_WPTR + SDMA0_REGISTER_OFFSET; + else + reg = SDMA0_GFX_RB_WPTR + SDMA1_REGISTER_OFFSET; + + return (RREG32(reg) & 0x3fffc) >> 2; +} + +/** + * cik_sdma_set_wptr - commit the write pointer + * + * @rdev: radeon_device pointer + * @ring: radeon ring pointer + * + * Write the wptr back to the hardware (CIK+). + */ +void cik_sdma_set_wptr(struct radeon_device *rdev, + struct radeon_ring *ring) +{ + u32 reg; + + if (ring->idx == R600_RING_TYPE_DMA_INDEX) + reg = SDMA0_GFX_RB_WPTR + SDMA0_REGISTER_OFFSET; + else + reg = SDMA0_GFX_RB_WPTR + SDMA1_REGISTER_OFFSET; + + WREG32(reg, (ring->wptr << 2) & 0x3fffc); +} + +/** * cik_sdma_ring_ib_execute - Schedule an IB on the DMA engine * * @rdev: radeon_device pointer @@ -88,6 +157,35 @@ void cik_sdma_ring_ib_execute(struct radeon_device *rdev, } /** + * cik_sdma_hdp_flush_ring_emit - emit an hdp flush on the DMA ring + * + * @rdev: radeon_device pointer + * @ridx: radeon ring index + * + * Emit an hdp flush packet on the requested DMA ring. + */ +static void cik_sdma_hdp_flush_ring_emit(struct radeon_device *rdev, + int ridx) +{ + struct radeon_ring *ring = &rdev->ring[ridx]; + u32 extra_bits = (SDMA_POLL_REG_MEM_EXTRA_OP(1) | + SDMA_POLL_REG_MEM_EXTRA_FUNC(3)); /* == */ + u32 ref_and_mask; + + if (ridx == R600_RING_TYPE_DMA_INDEX) + ref_and_mask = SDMA0; + else + ref_and_mask = SDMA1; + + radeon_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_POLL_REG_MEM, 0, extra_bits)); + radeon_ring_write(ring, GPU_HDP_FLUSH_DONE); + radeon_ring_write(ring, GPU_HDP_FLUSH_REQ); + radeon_ring_write(ring, ref_and_mask); /* reference */ + radeon_ring_write(ring, ref_and_mask); /* mask */ + radeon_ring_write(ring, (0xfff << 16) | 10); /* retry count, poll interval */ +} + +/** * cik_sdma_fence_ring_emit - emit a fence on the DMA ring * * @rdev: radeon_device pointer @@ -111,12 +209,7 @@ void cik_sdma_fence_ring_emit(struct radeon_device *rdev, /* generate an interrupt */ radeon_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_TRAP, 0, 0)); /* flush HDP */ - /* We should be using the new POLL_REG_MEM special op packet here - * but it causes sDMA to hang sometimes - */ - radeon_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_SRBM_WRITE, 0, 0xf000)); - radeon_ring_write(ring, HDP_MEM_COHERENCY_FLUSH_CNTL >> 2); - radeon_ring_write(ring, 0); + cik_sdma_hdp_flush_ring_emit(rdev, fence->ring); } /** @@ -157,7 +250,9 @@ static void cik_sdma_gfx_stop(struct radeon_device *rdev) u32 rb_cntl, reg_offset; int i; - 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); for (i = 0; i < 2; i++) { if (i == 0) @@ -288,7 +383,9 @@ static int cik_sdma_gfx_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; } @@ -747,12 +844,7 @@ void cik_dma_vm_flush(struct radeon_device *rdev, int ridx, struct radeon_vm *vm radeon_ring_write(ring, VMID(0)); /* flush HDP */ - /* We should be using the new POLL_REG_MEM special op packet here - * but it causes sDMA to hang sometimes - */ - radeon_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_SRBM_WRITE, 0, 0xf000)); - radeon_ring_write(ring, HDP_MEM_COHERENCY_FLUSH_CNTL >> 2); - radeon_ring_write(ring, 0); + cik_sdma_hdp_flush_ring_emit(rdev, ridx); /* flush TLB */ radeon_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_SRBM_WRITE, 0, 0xf000)); |