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| Rev | Author | Line No. | Line |
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| 5078 | serge | 1 | /* |
| 2 | * Copyright 2013 Advanced Micro Devices, Inc. |
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| 3 | * |
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| 4 | * Permission is hereby granted, free of charge, to any person obtaining a |
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| 5 | * copy of this software and associated documentation files (the "Software"), |
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| 6 | * to deal in the Software without restriction, including without limitation |
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| 7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
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| 8 | * and/or sell copies of the Software, and to permit persons to whom the |
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| 9 | * Software is furnished to do so, subject to the following conditions: |
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| 10 | * |
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| 11 | * The above copyright notice and this permission notice shall be included in |
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| 12 | * all copies or substantial portions of the Software. |
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| 13 | * |
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| 14 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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| 15 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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| 16 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
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| 17 | * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR |
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| 18 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
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| 19 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
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| 20 | * OTHER DEALINGS IN THE SOFTWARE. |
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| 21 | * |
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| 22 | * Authors: Alex Deucher |
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| 23 | */ |
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| 24 | #include |
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| 25 | #include "radeon.h" |
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| 26 | #include "radeon_asic.h" |
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| 27 | #include "rv770d.h" |
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| 28 | |||
| 29 | /** |
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| 30 | * rv770_copy_dma - copy pages using the DMA engine |
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| 31 | * |
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| 32 | * @rdev: radeon_device pointer |
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| 33 | * @src_offset: src GPU address |
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| 34 | * @dst_offset: dst GPU address |
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| 35 | * @num_gpu_pages: number of GPU pages to xfer |
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| 36 | * @fence: radeon fence object |
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| 37 | * |
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| 38 | * Copy GPU paging using the DMA engine (r7xx). |
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| 39 | * Used by the radeon ttm implementation to move pages if |
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| 40 | * registered as the asic copy callback. |
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| 41 | */ |
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| 42 | int rv770_copy_dma(struct radeon_device *rdev, |
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| 43 | uint64_t src_offset, uint64_t dst_offset, |
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| 44 | unsigned num_gpu_pages, |
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| 45 | struct radeon_fence **fence) |
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| 46 | { |
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| 47 | struct radeon_semaphore *sem = NULL; |
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| 48 | int ring_index = rdev->asic->copy.dma_ring_index; |
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| 49 | struct radeon_ring *ring = &rdev->ring[ring_index]; |
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| 50 | u32 size_in_dw, cur_size_in_dw; |
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| 51 | int i, num_loops; |
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| 52 | int r = 0; |
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| 53 | |||
| 54 | r = radeon_semaphore_create(rdev, &sem); |
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| 55 | if (r) { |
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| 56 | DRM_ERROR("radeon: moving bo (%d).\n", r); |
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| 57 | return r; |
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| 58 | } |
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| 59 | |||
| 60 | size_in_dw = (num_gpu_pages << RADEON_GPU_PAGE_SHIFT) / 4; |
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| 61 | num_loops = DIV_ROUND_UP(size_in_dw, 0xFFFF); |
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| 62 | r = radeon_ring_lock(rdev, ring, num_loops * 5 + 8); |
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| 63 | if (r) { |
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| 64 | DRM_ERROR("radeon: moving bo (%d).\n", r); |
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| 65 | radeon_semaphore_free(rdev, &sem, NULL); |
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| 66 | return r; |
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| 67 | } |
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| 68 | |||
| 69 | radeon_semaphore_sync_to(sem, *fence); |
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| 70 | radeon_semaphore_sync_rings(rdev, sem, ring->idx); |
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| 71 | |||
| 72 | for (i = 0; i < num_loops; i++) { |
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| 73 | cur_size_in_dw = size_in_dw; |
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| 74 | if (cur_size_in_dw > 0xFFFF) |
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| 75 | cur_size_in_dw = 0xFFFF; |
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| 76 | size_in_dw -= cur_size_in_dw; |
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| 77 | radeon_ring_write(ring, DMA_PACKET(DMA_PACKET_COPY, 0, 0, cur_size_in_dw)); |
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| 78 | radeon_ring_write(ring, dst_offset & 0xfffffffc); |
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| 79 | radeon_ring_write(ring, src_offset & 0xfffffffc); |
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| 80 | radeon_ring_write(ring, upper_32_bits(dst_offset) & 0xff); |
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| 81 | radeon_ring_write(ring, upper_32_bits(src_offset) & 0xff); |
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| 82 | src_offset += cur_size_in_dw * 4; |
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| 83 | dst_offset += cur_size_in_dw * 4; |
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| 84 | } |
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| 85 | |||
| 86 | r = radeon_fence_emit(rdev, fence, ring->idx); |
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| 87 | if (r) { |
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| 88 | radeon_ring_unlock_undo(rdev, ring); |
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| 89 | radeon_semaphore_free(rdev, &sem, NULL); |
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| 90 | return r; |
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| 91 | } |
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| 92 | |||
| 93 | radeon_ring_unlock_commit(rdev, ring, false); |
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| 94 | radeon_semaphore_free(rdev, &sem, *fence); |
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| 95 | |||
| 96 | return r; |
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| 97 | } |