mirrors
/
linux-stable
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
1
0
Fork 0
Code Issues Releases Wiki Activity

drm/amdgpu: add optional dependencies to the CS IOCTL v2 

v2: remove unrelated whitespace change, fix C comment

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Christian König 2015-06-19 17:31:29 +02:00 committed by Alex Deucher
parent 03507c4f2f
commit 2b48d323b2
2 changed files with 67 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

59
drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
View File

@ -226,6 +226,9 @@ int amdgpu_cs_parser_init(struct amdgpu_cs_parser *p, void *data)
}
break;
case AMDGPU_CHUNK_ID_DEPENDENCIES:
break;
default:
r = -EINVAL;
goto out;
@ -663,6 +666,55 @@ static int amdgpu_cs_ib_fill(struct amdgpu_device *adev,
return 0;
}
static int amdgpu_cs_dependencies(struct amdgpu_device *adev,
struct amdgpu_cs_parser *p)
{
struct amdgpu_ib *ib;
int i, j, r;
if (!p->num_ibs)
return 0;
/* Add dependencies to first IB */
ib = &p->ibs[0];
for (i = 0; i < p->nchunks; ++i) {
struct drm_amdgpu_cs_chunk_dep *deps;
struct amdgpu_cs_chunk *chunk;
unsigned num_deps;
chunk = &p->chunks[i];
if (chunk->chunk_id != AMDGPU_CHUNK_ID_DEPENDENCIES)
continue;
deps = (struct drm_amdgpu_cs_chunk_dep *)chunk->kdata;
num_deps = chunk->length_dw * 4 /
sizeof(struct drm_amdgpu_cs_chunk_dep);
for (j = 0; j < num_deps; ++j) {
struct amdgpu_fence *fence;
struct amdgpu_ring *ring;
r = amdgpu_cs_get_ring(adev, deps[j].ip_type,
deps[j].ip_instance,
deps[j].ring, &ring);
if (r)
return r;
r = amdgpu_fence_recreate(ring, p->filp,
deps[j].handle,
&fence);
if (r)
return r;
amdgpu_sync_fence(&ib->sync, fence);
amdgpu_fence_unref(&fence);
}
}
return 0;
}
int amdgpu_cs_ioctl(struct drm_device *dev, void *data, struct drm_file *filp)
{
struct amdgpu_device *adev = dev->dev_private;
@ -697,11 +749,16 @@ int amdgpu_cs_ioctl(struct drm_device *dev, void *data, struct drm_file *filp)
else
DRM_ERROR("Failed to process the buffer list %d!\n", r);
}
} else {
}
if (!r) {
reserved_buffers = true;
r = amdgpu_cs_ib_fill(adev, &parser);
}
if (!r)
r = amdgpu_cs_dependencies(adev, &parser);
if (r) {
amdgpu_cs_parser_fini(&parser, r, reserved_buffers);
up_read(&adev->exclusive_lock);

9
include/uapi/drm/amdgpu_drm.h
View File

@ -348,6 +348,7 @@ struct drm_amdgpu_gem_va {
#define AMDGPU_CHUNK_ID_IB 0x01
#define AMDGPU_CHUNK_ID_FENCE 0x02
#define AMDGPU_CHUNK_ID_DEPENDENCIES 0x03
struct drm_amdgpu_cs_chunk {
uint32_t chunk_id;
@ -399,6 +400,14 @@ struct drm_amdgpu_cs_chunk_ib {
uint32_t ring;
};
struct drm_amdgpu_cs_chunk_dep {
uint32_t ip_type;
uint32_t ip_instance;
uint32_t ring;
uint32_t ctx_id;
uint64_t handle;
};
struct drm_amdgpu_cs_chunk_fence {
uint32_t handle;
uint32_t offset;