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drm/amdgpu: add support for inplace IB patching for MM engines v2

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We are going to need that for the second UVD instance on Vega20.

v2: rename to patch_cs_in_place

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-and-tested-by: James Zhu <James.Zhu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Christian König 2018-07-23 16:01:39 +02:00 committed by Alex Deucher
parent 6d52aacd92
commit 9d248517d4
3 changed files with 16 additions and 6 deletions
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1
drivers/gpu/drm/amd/amdgpu/amdgpu.h
View file

@ -1748,6 +1748,7 @@ amdgpu_get_sdma_instance(struct amdgpu_ring *ring)
#define amdgpu_vm_write_pte(adev, ib, pe, value, count, incr) ((adev)->vm_manager.vm_pte_funcs->write_pte((ib), (pe), (value), (count), (incr)))
#define amdgpu_vm_set_pte_pde(adev, ib, pe, addr, count, incr, flags) ((adev)->vm_manager.vm_pte_funcs->set_pte_pde((ib), (pe), (addr), (count), (incr), (flags)))
#define amdgpu_ring_parse_cs(r, p, ib) ((r)->funcs->parse_cs((p), (ib)))
#define amdgpu_ring_patch_cs_in_place(r, p, ib) ((r)->funcs->patch_cs_in_place((p), (ib)))
#define amdgpu_ring_test_ring(r) (r)->funcs->test_ring((r))
#define amdgpu_ring_test_ib(r, t) (r)->funcs->test_ib((r), (t))
#define amdgpu_ring_get_rptr(r) (r)->funcs->get_rptr((r))

20
drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
View file

@ -916,7 +916,7 @@ static int amdgpu_cs_ib_vm_chunk(struct amdgpu_device *adev,
int r;
/* Only for UVD/VCE VM emulation */
if (p->ring->funcs->parse_cs) {
if (p->ring->funcs->parse_cs || p->ring->funcs->patch_cs_in_place) {
unsigned i, j;
for (i = 0, j = 0; i < p->nchunks && j < p->job->num_ibs; i++) {
@ -957,12 +957,20 @@ static int amdgpu_cs_ib_vm_chunk(struct amdgpu_device *adev,
offset = m->start * AMDGPU_GPU_PAGE_SIZE;
kptr += va_start - offset;
memcpy(ib->ptr, kptr, chunk_ib->ib_bytes);
amdgpu_bo_kunmap(aobj);
if (p->ring->funcs->parse_cs) {
memcpy(ib->ptr, kptr, chunk_ib->ib_bytes);
amdgpu_bo_kunmap(aobj);
r = amdgpu_ring_parse_cs(ring, p, j);
if (r)
return r;
r = amdgpu_ring_parse_cs(ring, p, j);
if (r)
return r;
} else {
ib->ptr = (uint32_t *)kptr;
r = amdgpu_ring_patch_cs_in_place(ring, p, j);
amdgpu_bo_kunmap(aobj);
if (r)
return r;
}
j++;
}

1
drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h
View file

@ -123,6 +123,7 @@ struct amdgpu_ring_funcs {
void (*set_wptr)(struct amdgpu_ring *ring);
/* validating and patching of IBs */
int (*parse_cs)(struct amdgpu_cs_parser *p, uint32_t ib_idx);
int (*patch_cs_in_place)(struct amdgpu_cs_parser *p, uint32_t ib_idx);
/* constants to calculate how many DW are needed for an emit */
unsigned emit_frame_size;
unsigned emit_ib_size;