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[intel-GEM] partial support for memory domains.

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Doesn't deal with local modifications yet (need new kernel set_domain ioctl
for that to work). Also, guesses what domains are affected based on the
read/write bits set in the flags. Works for 915, probably not so much for
965.
This commit is contained in:
Keith Packard 2008-05-06 22:06:41 -07:00
parent 537bbe6dec
commit a2ec8570ae
1 changed files with 23 additions and 1 deletions
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24
src/mesa/drivers/dri/intel/intel_bufmgr_gem.c
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@ -123,6 +123,8 @@ typedef struct _dri_bo_gem {
dri_bo **reloc_target_bo;
/** Number of entries in relocs */
int reloc_count;
/** Memory domains for synchronization */
uint32_t read_domains, write_domain;
/** Mapped address for the buffer */
void *virtual;
} dri_bo_gem;
@ -230,6 +232,8 @@ intel_add_validate_buffer(dri_bo *bo)
bufmgr_gem->validate_array[index].relocs_ptr = (uintptr_t)bo_gem->relocs;
bufmgr_gem->validate_array[index].alignment = 0;
bufmgr_gem->validate_array[index].buffer_offset = 0;
bufmgr_gem->validate_array[index].read_domains = bo_gem->read_domains;
bufmgr_gem->validate_array[index].write_domain = bo_gem->write_domain;
bufmgr_gem->validate_bo[index] = bo;
dri_bo_reference(bo);
bufmgr_gem->validate_count++;
@ -597,6 +601,18 @@ dri_gem_emit_reloc(dri_bo *bo, uint64_t flags, GLuint delta,
bo_gem->reloc_target_bo[bo_gem->reloc_count] = target_bo;
dri_bo_reference(target_bo);
/** XXX set memory domains, using existing TTM flags (which is wrong) */
if (flags & DRM_BO_FLAG_WRITE)
{
/* assume this means the rendering buffer */
target_bo_gem->read_domains |= DRM_GEM_DOMAIN_I915_RENDER;
target_bo_gem->write_domain = DRM_GEM_DOMAIN_I915_RENDER;
}
if (flags & DRM_BO_FLAG_READ)
{
/* assume this means the sampler buffer */
target_bo_gem->read_domains |= DRM_GEM_DOMAIN_I915_SAMPLER;
}
bo_gem->reloc_count++;
return 0;
}
@ -629,7 +645,10 @@ dri_gem_bo_process_reloc(dri_bo *bo)
static void *
dri_gem_process_reloc(dri_bo *batch_buf)
{
dri_bufmgr_gem *bufmgr_gem = (dri_bufmgr_gem *)batch_buf->bufmgr;
dri_bo_gem *bo_gem = (dri_bo_gem *)batch_buf;
dri_bufmgr_gem *bufmgr_gem = (dri_bufmgr_gem *) batch_buf->bufmgr;
bo_gem->read_domains |= DRM_GEM_DOMAIN_I915_COMMAND;
/* Update indices and set up the validate list. */
dri_gem_bo_process_reloc(batch_buf);
@ -680,6 +699,9 @@ dri_gem_post_submit(dri_bo *batch_buf)
dri_bo *bo = bufmgr_gem->validate_bo[i];
dri_bo_gem *bo_gem = (dri_bo_gem *)bo;
/* clear read/write domain bits */
bo_gem->read_domains = 0;
bo_gem->write_domain = 0;
/* Disconnect the buffer from the validate list */
bo_gem->validate_index = -1;
dri_bo_unreference(bo);