drm/radeon/evergreen_dma.c

31  * evergreen_dma_fence_ring_emit - emit a fence on the DMA ring
36  * Add a DMA fence packet to the ring to write
43 	struct radeon_ring *ring = &rdev->ring[fence->ring];
44 	u64 addr = rdev->fence_drv[fence->ring].gpu_addr;
46 	radeon_ring_write(ring, DMA_PACKET(DMA_PACKET_FENCE, 0, 0));
47 	radeon_ring_write(ring, addr & 0xfffffffc);
48 	radeon_ring_write(ring, (upper_32_bits(addr) & 0xff));
49 	radeon_ring_write(ring, fence->seq);
51 	radeon_ring_write(ring, DMA_PACKET(DMA_PACKET_TRAP, 0, 0));
53 	radeon_ring_write(ring, DMA_PACKET(DMA_PACKET_SRBM_WRITE, 0, 0));
54 	radeon_ring_write(ring, (0xf << 16) | (HDP_MEM_COHERENCY_FLUSH_CNTL >> 2));
55 	radeon_ring_write(ring, 1);
64  * Schedule an IB in the DMA ring (evergreen).
69 	struct radeon_ring *ring = &rdev->ring[ib->ring];
72 		u32 next_rptr = ring->wptr + 4;
76 		radeon_ring_write(ring, DMA_PACKET(DMA_PACKET_WRITE, 0, 1));
77 		radeon_ring_write(ring, ring->next_rptr_gpu_addr & 0xfffffffc);
78 		radeon_ring_write(ring, upper_32_bits(ring->next_rptr_gpu_addr) & 0xff);
79 		radeon_ring_write(ring, next_rptr);
82 	/* The indirect buffer packet must end on an 8 DW boundary in the DMA ring.
85 	while ((ring->wptr & 7) != 5)
86 		radeon_ring_write(ring, DMA_PACKET(DMA_PACKET_NOP, 0, 0));
87 	radeon_ring_write(ring, DMA_PACKET(DMA_PACKET_INDIRECT_BUFFER, 0, 0));
88 	radeon_ring_write(ring, (ib->gpu_addr & 0xFFFFFFE0));
89 	radeon_ring_write(ring, (ib->length_dw << 12) | (upper_32_bits(ib->gpu_addr) & 0xFF));
115 	struct radeon_ring *ring = &rdev->ring[ring_index];
124 	r = radeon_ring_lock(rdev, ring, num_loops * 5 + 11);
132 	radeon_sync_rings(rdev, &sync, ring->idx);
139 		radeon_ring_write(ring, DMA_PACKET(DMA_PACKET_COPY, 0, cur_size_in_dw));
140 		radeon_ring_write(ring, dst_offset & 0xfffffffc);
141 		radeon_ring_write(ring, src_offset & 0xfffffffc);
142 		radeon_ring_write(ring, upper_32_bits(dst_offset) & 0xff);
143 		radeon_ring_write(ring, upper_32_bits(src_offset) & 0xff);
148 	r = radeon_fence_emit(rdev, &fence, ring->idx);
150 		radeon_ring_unlock_undo(rdev, ring);
155 	radeon_ring_unlock_commit(rdev, ring, false);
165  * @ring: radeon_ring structure holding ring information
170 bool evergreen_dma_is_lockup(struct radeon_device *rdev, struct radeon_ring *ring)
175 		radeon_ring_lockup_update(rdev, ring);
178 	return radeon_ring_test_lockup(rdev, ring);