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r200: make use of DMA buffers for Elts a lot better. 

This allows us to return the unused portion of the dma buffer
to the allocator instead of wasting nearly 16k a pop.

Cherry picked and ported to new code by Pauli.
This commit is contained in:
Dave Airlie 2009-06-26 15:05:02 +10:00 committed by Alex Deucher
parent ae290fd93e
commit 1279cdcb1f
3 changed files with 18 additions and 11 deletions
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16
src/mesa/drivers/dri/r200/r200_cmdbuf.c
View File

@ -219,6 +219,9 @@ void r200FlushElts(GLcontext *ctx)
radeon_bo_unref(rmesa->radeon.tcl.elt_dma_bo);
rmesa->radeon.tcl.elt_dma_bo = NULL;
if (R200_ELT_BUF_SZ > elt_used)
radeonReturnDmaRegion(&rmesa->radeon, R200_ELT_BUF_SZ - elt_used);
if (R200_DEBUG & DEBUG_SYNC) {
fprintf(stderr, "%s: Syncing\n", __FUNCTION__);
radeonFinish( rmesa->radeon.glCtx );
@ -240,22 +243,13 @@ GLushort *r200AllocEltsOpenEnded( r200ContextPtr rmesa,
radeonEmitState(&rmesa->radeon);
rmesa->radeon.tcl.elt_dma_bo = radeon_bo_open(rmesa->radeon.radeonScreen->bom,
0, R200_ELT_BUF_SZ, 4,
RADEON_GEM_DOMAIN_GTT, 0);
rmesa->radeon.tcl.elt_dma_offset = 0;
radeonAllocDmaRegion(&rmesa->radeon, &rmesa->radeon.tcl.elt_dma_bo,
&rmesa->radeon.tcl.elt_dma_offset, R200_ELT_BUF_SZ, 4);
rmesa->tcl.elt_used = min_nr * 2;
ret = radeon_cs_space_check_with_bo(rmesa->radeon.cmdbuf.cs, rmesa->radeon.tcl.elt_dma_bo,
RADEON_GEM_DOMAIN_GTT, 0);
if (ret) {
fprintf(stderr,"failure to revalidate BOs - badness\n");
}
radeon_bo_map(rmesa->radeon.tcl.elt_dma_bo, 1);
retval = rmesa->radeon.tcl.elt_dma_bo->ptr + rmesa->radeon.tcl.elt_dma_offset;
if (R200_DEBUG & DEBUG_PRIMS)
fprintf(stderr, "%s: header prim %x \n",
__FUNCTION__, primitive);

11
src/mesa/drivers/dri/radeon/radeon_dma.c
View File

@ -271,6 +271,17 @@ void radeonFreeDmaRegions(radeonContextPtr rmesa)
}
}
void radeonReturnDmaRegion(radeonContextPtr rmesa, int return_bytes)
{
if (is_empty_list(&rmesa->dma.reserved))
return;
if (RADEON_DEBUG & DEBUG_IOCTL)
fprintf(stderr, "%s %d\n", __FUNCTION__, return_bytes);
rmesa->dma.current_used -= return_bytes;
rmesa->dma.current_vertexptr = rmesa->dma.current_used;
}
void radeonReleaseDmaRegions(radeonContextPtr rmesa)
{
struct radeon_dma_bo *dma_bo;

2
src/mesa/drivers/dri/radeon/radeon_dma.h
View File

@ -41,8 +41,10 @@ void radeonEmitVec16(uint32_t *out, const GLvoid * data, int stride, int count);
void rcommon_emit_vector(GLcontext * ctx, struct radeon_aos *aos,
const GLvoid * data, int size, int stride, int count);
void radeonReturnDmaRegion(radeonContextPtr rmesa, int return_bytes);
void radeonRefillCurrentDmaRegion(radeonContextPtr rmesa, int size);
void radeon_init_dma(radeonContextPtr rmesa);
void radeonReturnDmaRegion(radeonContextPtr rmesa, int return_bytes);
void radeonAllocDmaRegion(radeonContextPtr rmesa,
struct radeon_bo **pbo, int *poffset,
int bytes, int alignment);