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/*
* Copyright 2010 Jerome Glisse <glisse@freedesktop.org>
*
* 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
* on the rights to use, copy, modify, merge, publish, distribute, sub
* license, 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 (including the next
* paragraph) 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 NON-INFRINGEMENT. IN NO EVENT SHALL
* THE AUTHOR(S) AND/OR THEIR SUPPLIERS 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:
* Jerome Glisse
*/
#include "r600_pipe.h"
#include "evergreend.h"
#include "util/u_memory.h"
#include "util/u_math.h"
void evergreen_dma_copy_buffer(struct r600_context *rctx,
struct pipe_resource *dst,
struct pipe_resource *src,
uint64_t dst_offset,
uint64_t src_offset,
uint64_t size)
{
struct radeon_winsys_cs *cs = rctx->b.dma.cs;
unsigned i, ncopy, csize, sub_cmd, shift;
struct r600_resource *rdst = (struct r600_resource*)dst;
struct r600_resource *rsrc = (struct r600_resource*)src;
/* Mark the buffer range of destination as valid (initialized),
* so that transfer_map knows it should wait for the GPU when mapping
* that range. */
util_range_add(&rdst->valid_buffer_range, dst_offset,
dst_offset + size);
dst_offset += rdst->gpu_address;
src_offset += rsrc->gpu_address;
/* see if we use dword or byte copy */
if (!(dst_offset % 4) && !(src_offset % 4) && !(size % 4)) {
size >>= 2;
sub_cmd = EG_DMA_COPY_DWORD_ALIGNED;
shift = 2;
} else {
sub_cmd = EG_DMA_COPY_BYTE_ALIGNED;
shift = 0;
}
ncopy = (size / EG_DMA_COPY_MAX_SIZE) + !!(size % EG_DMA_COPY_MAX_SIZE);
r600_need_dma_space(&rctx->b, ncopy * 5, rdst, rsrc);
for (i = 0; i < ncopy; i++) {
csize = size < EG_DMA_COPY_MAX_SIZE ? size : EG_DMA_COPY_MAX_SIZE;
/* emit reloc before writing cs so that cs is always in consistent state */
radeon_add_to_buffer_list(&rctx->b, &rctx->b.dma, rsrc, RADEON_USAGE_READ,
RADEON_PRIO_SDMA_BUFFER);
radeon_add_to_buffer_list(&rctx->b, &rctx->b.dma, rdst, RADEON_USAGE_WRITE,
RADEON_PRIO_SDMA_BUFFER);
radeon_emit(cs, DMA_PACKET(DMA_PACKET_COPY, sub_cmd, csize));
radeon_emit(cs, dst_offset & 0xffffffff);
radeon_emit(cs, src_offset & 0xffffffff);
radeon_emit(cs, (dst_offset >> 32UL) & 0xff);
radeon_emit(cs, (src_offset >> 32UL) & 0xff);
dst_offset += csize << shift;
src_offset += csize << shift;
size -= csize;
}
}
/* The max number of bytes to copy per packet. */
#define CP_DMA_MAX_BYTE_COUNT ((1 << 21) - 8)
void evergreen_cp_dma_clear_buffer(struct r600_context *rctx,
struct pipe_resource *dst, uint64_t offset,
unsigned size, uint32_t clear_value,
enum r600_coherency coher)
{
struct radeon_winsys_cs *cs = rctx->b.gfx.cs;
assert(size);
assert(rctx->screen->b.has_cp_dma);
/* Mark the buffer range of destination as valid (initialized),
* so that transfer_map knows it should wait for the GPU when mapping
* that range. */
util_range_add(&r600_resource(dst)->valid_buffer_range, offset,
offset + size);
offset += r600_resource(dst)->gpu_address;
/* Flush the cache where the resource is bound. */
rctx->b.flags |= r600_get_flush_flags(coher) |
R600_CONTEXT_WAIT_3D_IDLE;
while (size) {
unsigned sync = 0;
unsigned byte_count = MIN2(size, CP_DMA_MAX_BYTE_COUNT);
unsigned reloc;
r600_need_cs_space(rctx,
10 + (rctx->b.flags ? R600_MAX_FLUSH_CS_DWORDS : 0) +
R600_MAX_PFP_SYNC_ME_DWORDS, FALSE);
/* Flush the caches for the first copy only. */
if (rctx->b.flags) {
r600_flush_emit(rctx);
}
/* Do the synchronization after the last copy, so that all data is written to memory. */
if (size == byte_count) {
sync = PKT3_CP_DMA_CP_SYNC;
}
/* This must be done after r600_need_cs_space. */
reloc = radeon_add_to_buffer_list(&rctx->b, &rctx->b.gfx,
(struct r600_resource*)dst, RADEON_USAGE_WRITE,
RADEON_PRIO_CP_DMA);
radeon_emit(cs, PKT3(PKT3_CP_DMA, 4, 0));
radeon_emit(cs, clear_value); /* DATA [31:0] */
radeon_emit(cs, sync | PKT3_CP_DMA_SRC_SEL(2)); /* CP_SYNC [31] | SRC_SEL[30:29] */
radeon_emit(cs, offset); /* DST_ADDR_LO [31:0] */
radeon_emit(cs, (offset >> 32) & 0xff); /* DST_ADDR_HI [7:0] */
radeon_emit(cs, byte_count); /* COMMAND [29:22] | BYTE_COUNT [20:0] */
radeon_emit(cs, PKT3(PKT3_NOP, 0, 0));
radeon_emit(cs, reloc);
size -= byte_count;
offset += byte_count;
}
/* CP DMA is executed in ME, but index buffers are read by PFP.
* This ensures that ME (CP DMA) is idle before PFP starts fetching
* indices. If we wanted to execute CP DMA in PFP, this packet
* should precede it.
*/
if (coher == R600_COHERENCY_SHADER)
r600_emit_pfp_sync_me(rctx);
}
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