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2483b4ea CK |
1 | /* |
2 | * Copyright 2013 Advanced Micro Devices, Inc. | |
3 | * | |
4 | * Permission is hereby granted, free of charge, to any person obtaining a | |
5 | * copy of this software and associated documentation files (the "Software"), | |
6 | * to deal in the Software without restriction, including without limitation | |
7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, | |
8 | * and/or sell copies of the Software, and to permit persons to whom the | |
9 | * Software is furnished to do so, subject to the following conditions: | |
10 | * | |
11 | * The above copyright notice and this permission notice shall be included in | |
12 | * all copies or substantial portions of the Software. | |
13 | * | |
14 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
15 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
16 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
17 | * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR | |
18 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, | |
19 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR | |
20 | * OTHER DEALINGS IN THE SOFTWARE. | |
21 | * | |
22 | * Authors: Alex Deucher | |
23 | */ | |
24 | #include <drm/drmP.h> | |
25 | #include "radeon.h" | |
26 | #include "radeon_asic.h" | |
27 | #include "rv770d.h" | |
28 | ||
29 | /** | |
30 | * rv770_copy_dma - copy pages using the DMA engine | |
31 | * | |
32 | * @rdev: radeon_device pointer | |
33 | * @src_offset: src GPU address | |
34 | * @dst_offset: dst GPU address | |
35 | * @num_gpu_pages: number of GPU pages to xfer | |
57d20a43 | 36 | * @resv: reservation object to sync to |
2483b4ea CK |
37 | * |
38 | * Copy GPU paging using the DMA engine (r7xx). | |
39 | * Used by the radeon ttm implementation to move pages if | |
40 | * registered as the asic copy callback. | |
41 | */ | |
57d20a43 CK |
42 | struct radeon_fence *rv770_copy_dma(struct radeon_device *rdev, |
43 | uint64_t src_offset, uint64_t dst_offset, | |
44 | unsigned num_gpu_pages, | |
45 | struct reservation_object *resv) | |
2483b4ea | 46 | { |
57d20a43 | 47 | struct radeon_fence *fence; |
975700d2 | 48 | struct radeon_sync sync; |
2483b4ea CK |
49 | int ring_index = rdev->asic->copy.dma_ring_index; |
50 | struct radeon_ring *ring = &rdev->ring[ring_index]; | |
51 | u32 size_in_dw, cur_size_in_dw; | |
52 | int i, num_loops; | |
53 | int r = 0; | |
54 | ||
975700d2 | 55 | radeon_sync_create(&sync); |
2483b4ea CK |
56 | |
57 | size_in_dw = (num_gpu_pages << RADEON_GPU_PAGE_SHIFT) / 4; | |
58 | num_loops = DIV_ROUND_UP(size_in_dw, 0xFFFF); | |
59 | r = radeon_ring_lock(rdev, ring, num_loops * 5 + 8); | |
60 | if (r) { | |
61 | DRM_ERROR("radeon: moving bo (%d).\n", r); | |
975700d2 | 62 | radeon_sync_free(rdev, &sync, NULL); |
57d20a43 | 63 | return ERR_PTR(r); |
2483b4ea CK |
64 | } |
65 | ||
975700d2 CK |
66 | radeon_sync_resv(rdev, &sync, resv, false); |
67 | radeon_sync_rings(rdev, &sync, ring->idx); | |
2483b4ea CK |
68 | |
69 | for (i = 0; i < num_loops; i++) { | |
70 | cur_size_in_dw = size_in_dw; | |
71 | if (cur_size_in_dw > 0xFFFF) | |
72 | cur_size_in_dw = 0xFFFF; | |
73 | size_in_dw -= cur_size_in_dw; | |
74 | radeon_ring_write(ring, DMA_PACKET(DMA_PACKET_COPY, 0, 0, cur_size_in_dw)); | |
75 | radeon_ring_write(ring, dst_offset & 0xfffffffc); | |
76 | radeon_ring_write(ring, src_offset & 0xfffffffc); | |
77 | radeon_ring_write(ring, upper_32_bits(dst_offset) & 0xff); | |
78 | radeon_ring_write(ring, upper_32_bits(src_offset) & 0xff); | |
79 | src_offset += cur_size_in_dw * 4; | |
80 | dst_offset += cur_size_in_dw * 4; | |
81 | } | |
82 | ||
57d20a43 | 83 | r = radeon_fence_emit(rdev, &fence, ring->idx); |
2483b4ea CK |
84 | if (r) { |
85 | radeon_ring_unlock_undo(rdev, ring); | |
975700d2 | 86 | radeon_sync_free(rdev, &sync, NULL); |
57d20a43 | 87 | return ERR_PTR(r); |
2483b4ea CK |
88 | } |
89 | ||
1538a9e0 | 90 | radeon_ring_unlock_commit(rdev, ring, false); |
975700d2 | 91 | radeon_sync_free(rdev, &sync, fence); |
2483b4ea | 92 | |
57d20a43 | 93 | return fence; |
2483b4ea | 94 | } |