95 lines
3.2 KiB
C
95 lines
3.2 KiB
C
|
/*
|
||
|
|
* Copyright 2013 Advanced Micro Devices, Inc.
|
||
|
|
*
|
||
|
|
* Permission is hereby granted, free of charge, to any person obtaining a
|
||
|
|
* copy of this software and associated documentation files (the "Software"),
|
||
|
|
* to deal in the Software without restriction, including without limitation
|
||
|
|
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
|
||
|
|
* and/or sell copies of the Software, and to permit persons to whom the
|
||
|
|
* Software is furnished to do so, subject to the following conditions:
|
||
|
|
*
|
||
|
|
* The above copyright notice and this permission notice shall be included in
|
||
|
|
* all copies or substantial portions of the Software.
|
||
|
|
*
|
||
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
||
|
|
* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
|
||
|
|
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
|
||
|
|
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
|
||
|
|
* OTHER DEALINGS IN THE SOFTWARE.
|
||
|
|
*
|
||
|
|
* Authors: Alex Deucher
|
||
|
|
*/
|
||
|
|
#include <drm/drmP.h>
|
||
|
|
#include "radeon.h"
|
||
|
|
#include "radeon_asic.h"
|
||
|
|
#include "rv770d.h"
|
||
|
|
|
||
|
|
/**
|
||
|
|
* rv770_copy_dma - copy pages using the DMA engine
|
||
|
|
*
|
||
|
|
* @rdev: radeon_device pointer
|
||
|
|
* @src_offset: src GPU address
|
||
|
|
* @dst_offset: dst GPU address
|
||
|
|
* @num_gpu_pages: number of GPU pages to xfer
|
||
|
|
* @resv: reservation object to sync to
|
||
|
|
*
|
||
|
|
* Copy GPU paging using the DMA engine (r7xx).
|
||
|
|
* Used by the radeon ttm implementation to move pages if
|
||
|
|
* registered as the asic copy callback.
|
||
|
|
*/
|
||
|
|
struct radeon_fence *rv770_copy_dma(struct radeon_device *rdev,
|
||
|
|
uint64_t src_offset, uint64_t dst_offset,
|
||
|
|
unsigned num_gpu_pages,
|
||
|
|
struct reservation_object *resv)
|
||
|
|
{
|
||
|
|
struct radeon_fence *fence;
|
||
|
|
struct radeon_sync sync;
|
||
|
|
int ring_index = rdev->asic->copy.dma_ring_index;
|
||
|
|
struct radeon_ring *ring = &rdev->ring[ring_index];
|
||
|
|
u32 size_in_dw, cur_size_in_dw;
|
||
|
|
int i, num_loops;
|
||
|
|
int r = 0;
|
||
|
|
|
||
|
|
radeon_sync_create(&sync);
|
||
|
|
|
||
|
|
size_in_dw = (num_gpu_pages << RADEON_GPU_PAGE_SHIFT) / 4;
|
||
|
|
num_loops = DIV_ROUND_UP(size_in_dw, 0xFFFF);
|
||
|
|
r = radeon_ring_lock(rdev, ring, num_loops * 5 + 8);
|
||
|
|
if (r) {
|
||
|
|
DRM_ERROR("radeon: moving bo (%d).\n", r);
|
||
|
|
radeon_sync_free(rdev, &sync, NULL);
|
||
|
|
return ERR_PTR(r);
|
||
|
|
}
|
||
|
|
|
||
|
|
radeon_sync_resv(rdev, &sync, resv, false);
|
||
|
|
radeon_sync_rings(rdev, &sync, ring->idx);
|
||
|
|
|
||
|
|
for (i = 0; i < num_loops; i++) {
|
||
|
|
cur_size_in_dw = size_in_dw;
|
||
|
|
if (cur_size_in_dw > 0xFFFF)
|
||
|
|
cur_size_in_dw = 0xFFFF;
|
||
|
|
size_in_dw -= cur_size_in_dw;
|
||
|
|
radeon_ring_write(ring, DMA_PACKET(DMA_PACKET_COPY, 0, 0, cur_size_in_dw));
|
||
|
|
radeon_ring_write(ring, dst_offset & 0xfffffffc);
|
||
|
|
radeon_ring_write(ring, src_offset & 0xfffffffc);
|
||
|
|
radeon_ring_write(ring, upper_32_bits(dst_offset) & 0xff);
|
||
|
|
radeon_ring_write(ring, upper_32_bits(src_offset) & 0xff);
|
||
|
|
src_offset += cur_size_in_dw * 4;
|
||
|
|
dst_offset += cur_size_in_dw * 4;
|
||
|
|
}
|
||
|
|
|
||
|
|
r = radeon_fence_emit(rdev, &fence, ring->idx);
|
||
|
|
if (r) {
|
||
|
|
radeon_ring_unlock_undo(rdev, ring);
|
||
|
|
radeon_sync_free(rdev, &sync, NULL);
|
||
|
|
return ERR_PTR(r);
|
||
|
|
}
|
||
|
|
|
||
|
|
radeon_ring_unlock_commit(rdev, ring, false);
|
||
|
|
radeon_sync_free(rdev, &sync, fence);
|
||
|
|
|
||
|
|
return fence;
|
||
|
|
}
|