drm/radeon/kms: Add initial support for async DMA on r6xx/r7xx
Uses the new multi-ring infrastucture. 6xx/7xx has a single
async DMA ring.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
diff --git a/drivers/gpu/drm/radeon/rv770.c b/drivers/gpu/drm/radeon/rv770.c
index 79814a0..87c979c 100644
--- a/drivers/gpu/drm/radeon/rv770.c
+++ b/drivers/gpu/drm/radeon/rv770.c
@@ -316,6 +316,7 @@
radeon_ttm_set_active_vram_size(rdev, rdev->mc.visible_vram_size);
WREG32(CP_ME_CNTL, (CP_ME_HALT | CP_PFP_HALT));
WREG32(SCRATCH_UMSK, 0);
+ rdev->ring[RADEON_RING_TYPE_GFX_INDEX].ready = false;
}
static int rv770_cp_load_microcode(struct radeon_device *rdev)
@@ -583,6 +584,8 @@
WREG32(GB_TILING_CONFIG, gb_tiling_config);
WREG32(DCP_TILING_CONFIG, (gb_tiling_config & 0xffff));
WREG32(HDP_TILING_CONFIG, (gb_tiling_config & 0xffff));
+ WREG32(DMA_TILING_CONFIG, (gb_tiling_config & 0xffff));
+ WREG32(DMA_TILING_CONFIG2, (gb_tiling_config & 0xffff));
WREG32(CGTS_SYS_TCC_DISABLE, 0);
WREG32(CGTS_TCC_DISABLE, 0);
@@ -886,7 +889,7 @@
static int rv770_startup(struct radeon_device *rdev)
{
- struct radeon_ring *ring = &rdev->ring[RADEON_RING_TYPE_GFX_INDEX];
+ struct radeon_ring *ring;
int r;
/* enable pcie gen2 link */
@@ -932,6 +935,12 @@
return r;
}
+ r = radeon_fence_driver_start_ring(rdev, R600_RING_TYPE_DMA_INDEX);
+ if (r) {
+ dev_err(rdev->dev, "failed initializing DMA fences (%d).\n", r);
+ return r;
+ }
+
/* Enable IRQ */
r = r600_irq_init(rdev);
if (r) {
@@ -941,11 +950,20 @@
}
r600_irq_set(rdev);
+ ring = &rdev->ring[RADEON_RING_TYPE_GFX_INDEX];
r = radeon_ring_init(rdev, ring, ring->ring_size, RADEON_WB_CP_RPTR_OFFSET,
R600_CP_RB_RPTR, R600_CP_RB_WPTR,
0, 0xfffff, RADEON_CP_PACKET2);
if (r)
return r;
+
+ ring = &rdev->ring[R600_RING_TYPE_DMA_INDEX];
+ r = radeon_ring_init(rdev, ring, ring->ring_size, R600_WB_DMA_RPTR_OFFSET,
+ DMA_RB_RPTR, DMA_RB_WPTR,
+ 2, 0x3fffc, DMA_PACKET(DMA_PACKET_NOP, 0, 0, 0));
+ if (r)
+ return r;
+
r = rv770_cp_load_microcode(rdev);
if (r)
return r;
@@ -953,6 +971,10 @@
if (r)
return r;
+ r = r600_dma_resume(rdev);
+ if (r)
+ return r;
+
r = radeon_ib_pool_init(rdev);
if (r) {
dev_err(rdev->dev, "IB initialization failed (%d).\n", r);
@@ -995,7 +1017,7 @@
{
r600_audio_fini(rdev);
r700_cp_stop(rdev);
- rdev->ring[RADEON_RING_TYPE_GFX_INDEX].ready = false;
+ r600_dma_stop(rdev);
r600_irq_suspend(rdev);
radeon_wb_disable(rdev);
rv770_pcie_gart_disable(rdev);
@@ -1066,6 +1088,9 @@
rdev->ring[RADEON_RING_TYPE_GFX_INDEX].ring_obj = NULL;
r600_ring_init(rdev, &rdev->ring[RADEON_RING_TYPE_GFX_INDEX], 1024 * 1024);
+ rdev->ring[R600_RING_TYPE_DMA_INDEX].ring_obj = NULL;
+ r600_ring_init(rdev, &rdev->ring[R600_RING_TYPE_DMA_INDEX], 64 * 1024);
+
rdev->ih.ring_obj = NULL;
r600_ih_ring_init(rdev, 64 * 1024);
@@ -1078,6 +1103,7 @@
if (r) {
dev_err(rdev->dev, "disabling GPU acceleration\n");
r700_cp_fini(rdev);
+ r600_dma_fini(rdev);
r600_irq_fini(rdev);
radeon_wb_fini(rdev);
radeon_ib_pool_fini(rdev);
@@ -1093,6 +1119,7 @@
{
r600_blit_fini(rdev);
r700_cp_fini(rdev);
+ r600_dma_fini(rdev);
r600_irq_fini(rdev);
radeon_wb_fini(rdev);
radeon_ib_pool_fini(rdev);