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drm/radeon: fence virtual address and free it once idle v4

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Virtual address need to be fenced to know when we can safely remove it.
This patch also properly clear the pagetable. Previously it was
serouisly broken.

Kernel 3.5/3.4 need a similar patch but adapted for difference in mutex locking.

v2: For to update pagetable when unbinding bo (don't bailout if
    bo_va->valid is true).
v3: Add kernel 3.5/3.4 comment.
v4: Fix compilation warnings.

Signed-off-by: Jerome Glisse <jglisse@redhat.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Jerome Glisse
2012-08-06 12:32:21 -04:00
committed by Alex Deucher
parent 69b62ad8a4
commit e43b5ec05a
5 changed files with 55 additions and 21 deletions
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32
drivers/gpu/drm/radeon/radeon_cs.c
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@@ -278,6 +278,30 @@ int radeon_cs_parser_init(struct radeon_cs_parser *p, void *data)
return 0;
}
static void radeon_bo_vm_fence_va(struct radeon_cs_parser *parser,
struct radeon_fence *fence)
{
struct radeon_fpriv *fpriv = parser->filp->driver_priv;
struct radeon_vm *vm = &fpriv->vm;
struct radeon_bo_list *lobj;
if (parser->chunk_ib_idx == -1) {
return;
}
if ((parser->cs_flags & RADEON_CS_USE_VM) == 0) {
return;
}
list_for_each_entry(lobj, &parser->validated, tv.head) {
struct radeon_bo_va *bo_va;
struct radeon_bo *rbo = lobj->bo;
bo_va = radeon_bo_va(rbo, vm);
radeon_fence_unref(&bo_va->fence);
bo_va->fence = radeon_fence_ref(fence);
}
}
/**
* cs_parser_fini() - clean parser states
* @parser: parser structure holding parsing context.
@@ -290,11 +314,14 @@ static void radeon_cs_parser_fini(struct radeon_cs_parser *parser, int error)
{
unsigned i;
if (!error)
if (!error) {
/* fence all bo va before ttm_eu_fence_buffer_objects so bo are still reserved */
radeon_bo_vm_fence_va(parser, parser->ib.fence);
ttm_eu_fence_buffer_objects(&parser->validated,
parser->ib.fence);
else
} else {
ttm_eu_backoff_reservation(&parser->validated);
}
if (parser->relocs != NULL) {
for (i = 0; i < parser->nrelocs; i++) {
@@ -388,7 +415,6 @@ static int radeon_cs_ib_vm_chunk(struct radeon_device *rdev,
if (parser->chunk_ib_idx == -1)
return 0;
if ((parser->cs_flags & RADEON_CS_USE_VM) == 0)
return 0;