diff options
| author | Alex Deucher <alexander.deucher@amd.com> | 2011-11-18 10:19:47 -0500 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2012-12-14 10:45:25 -0500 |
| commit | cf4ccd016bae1a03bb38170eb54b5db4b04e0545 (patch) | |
| tree | 63b0f56e633db1f515841831cb81e91864f38da0 /drivers/gpu/drm/radeon/radeon_cs.c | |
| parent | 4ac0533abaec2b83a7f2c675010eedd55664bc26 (diff) | |
drm/radeon/kms: add 6xx/7xx CS parser for async DMA (v2)
Allows us to use the DMA ring from userspace.
DMA doesn't have a good NOP packet in which to embed the
reloc idx, so userspace has to add a reloc for each
buffer used and order them to match the command stream.
v2: fix address bounds checking, reloc indexing
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/radeon/radeon_cs.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_cs.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_cs.c b/drivers/gpu/drm/radeon/radeon_cs.c index 41672cc563f..1b32a5ab972 100644 --- a/drivers/gpu/drm/radeon/radeon_cs.c +++ b/drivers/gpu/drm/radeon/radeon_cs.c @@ -43,6 +43,7 @@ static int radeon_cs_parser_relocs(struct radeon_cs_parser *p) return 0; } chunk = &p->chunks[p->chunk_relocs_idx]; + p->dma_reloc_idx = 0; /* FIXME: we assume that each relocs use 4 dwords */ p->nrelocs = chunk->length_dw / 4; p->relocs_ptr = kcalloc(p->nrelocs, sizeof(void *), GFP_KERNEL); |