Skip to content

Commit

Permalink
drm/radeon/kms: add a new gem_wait ioctl with read/write flags
Browse files Browse the repository at this point in the history 
The new DRM_RADEON_GEM_WAIT ioctl combines GEM_WAIT_IDLE and GEM_BUSY (there
is a NO_WAIT flag to get the latter) with USAGE_READ and USAGE_WRITE flags
to take advantage of the new ttm_bo_wait changes.

Also bump the DRM version.

Signed-off-by: Marek Olšák <maraeo@gmail.com>
Reviewed-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
  • Loading branch information
Marek Olšák authored and Dave Airlie committed Aug 31, 2011
1 parent dfadbbd commit d3ed740
Show file tree
Hide file tree
Showing 7 changed files with 55 additions and 7 deletions.
2 changes: 2 additions & 0 deletions drivers/gpu/drm/radeon/radeon.h
View file
Original file line number Diff line number Diff line change
Expand Up @@ -1143,6 +1143,8 @@ int radeon_gem_set_tiling_ioctl(struct drm_device *dev, void *data,
struct drm_file *filp);
int radeon_gem_get_tiling_ioctl(struct drm_device *dev, void *data,
struct drm_file *filp);
int radeon_gem_wait_ioctl(struct drm_device *dev, void *data,
struct drm_file *filp);

/* VRAM scratch page for HDP bug */
struct r700_vram_scratch {
Expand Down
5 changes: 4 additions & 1 deletion drivers/gpu/drm/radeon/radeon_cs.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -80,7 +80,10 @@ int radeon_cs_parser_relocs(struct radeon_cs_parser *p)
p->relocs[i].lobj.wdomain = r->write_domain;
p->relocs[i].lobj.rdomain = r->read_domains;
p->relocs[i].lobj.tv.bo = &p->relocs[i].robj->tbo;
p->relocs[i].lobj.tv.usage = TTM_USAGE_READWRITE;
if (r->read_domains)
p->relocs[i].lobj.tv.usage |= TTM_USAGE_READ;
if (r->write_domain)
p->relocs[i].lobj.tv.usage |= TTM_USAGE_WRITE;
p->relocs[i].handle = r->handle;
p->relocs[i].flags = r->flags;
radeon_bo_list_add_object(&p->relocs[i].lobj,
Expand Down
3 changes: 2 additions & 1 deletion drivers/gpu/drm/radeon/radeon_drv.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -52,9 +52,10 @@
* 2.9.0 - r600 tiling (s3tc,rgtc) working, SET_PREDICATION packet 3 on r600 + eg, backend query
* 2.10.0 - fusion 2D tiling
* 2.11.0 - backend map, initial compute support for the CS checker
* 2.12.0 - DRM_RADEON_GEM_WAIT ioctl
*/
#define KMS_DRIVER_MAJOR 2
#define KMS_DRIVER_MINOR 11
#define KMS_DRIVER_MINOR 12
#define KMS_DRIVER_PATCHLEVEL 0
int radeon_driver_load_kms(struct drm_device *dev, unsigned long flags);
int radeon_driver_unload_kms(struct drm_device *dev);
Expand Down
36 changes: 33 additions & 3 deletions drivers/gpu/drm/radeon/radeon_gem.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -122,7 +122,7 @@ int radeon_gem_set_domain(struct drm_gem_object *gobj,
}
if (domain == RADEON_GEM_DOMAIN_CPU) {
/* Asking for cpu access wait for object idle */
r = radeon_bo_wait(robj, NULL, false);
r = radeon_bo_wait(robj, NULL, false, TTM_USAGE_READWRITE);
if (r) {
printk(KERN_ERR "Failed to wait for object !\n");
return r;
Expand Down Expand Up @@ -273,7 +273,7 @@ int radeon_gem_busy_ioctl(struct drm_device *dev, void *data,
return -ENOENT;
}
robj = gem_to_radeon_bo(gobj);
r = radeon_bo_wait(robj, &cur_placement, true);
r = radeon_bo_wait(robj, &cur_placement, true, TTM_USAGE_READWRITE);
switch (cur_placement) {
case TTM_PL_VRAM:
args->domain = RADEON_GEM_DOMAIN_VRAM;
Expand Down Expand Up @@ -303,14 +303,44 @@ int radeon_gem_wait_idle_ioctl(struct drm_device *dev, void *data,
return -ENOENT;
}
robj = gem_to_radeon_bo(gobj);
r = radeon_bo_wait(robj, NULL, false);
r = radeon_bo_wait(robj, NULL, false, TTM_USAGE_READWRITE);
/* callback hw specific functions if any */
if (robj->rdev->asic->ioctl_wait_idle)
robj->rdev->asic->ioctl_wait_idle(robj->rdev, robj);
drm_gem_object_unreference_unlocked(gobj);
return r;
}

int radeon_gem_wait_ioctl(struct drm_device *dev, void *data,
struct drm_file *filp)
{
struct drm_radeon_gem_wait *args = data;
struct drm_gem_object *gobj;
struct radeon_bo *robj;
bool no_wait = (args->flags & RADEON_GEM_NO_WAIT) != 0;
enum ttm_buffer_usage usage = 0;
int r;

if (args->flags & RADEON_GEM_USAGE_READ)
usage |= TTM_USAGE_READ;
if (args->flags & RADEON_GEM_USAGE_WRITE)
usage |= TTM_USAGE_WRITE;
if (!usage)
usage = TTM_USAGE_READWRITE;

gobj = drm_gem_object_lookup(dev, filp, args->handle);
if (gobj == NULL) {
return -ENOENT;
}
robj = gem_to_radeon_bo(gobj);
r = radeon_bo_wait(robj, NULL, no_wait, usage);
/* callback hw specific functions if any */
if (!no_wait && robj->rdev->asic->ioctl_wait_idle)
robj->rdev->asic->ioctl_wait_idle(robj->rdev, robj);
drm_gem_object_unreference_unlocked(gobj);
return r;
}

int radeon_gem_set_tiling_ioctl(struct drm_device *dev, void *data,
struct drm_file *filp)
{
Expand Down
1 change: 1 addition & 0 deletions drivers/gpu/drm/radeon/radeon_kms.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -451,5 +451,6 @@ struct drm_ioctl_desc radeon_ioctls_kms[] = {
DRM_IOCTL_DEF_DRV(RADEON_GEM_SET_TILING, radeon_gem_set_tiling_ioctl, DRM_AUTH|DRM_UNLOCKED),
DRM_IOCTL_DEF_DRV(RADEON_GEM_GET_TILING, radeon_gem_get_tiling_ioctl, DRM_AUTH|DRM_UNLOCKED),
DRM_IOCTL_DEF_DRV(RADEON_GEM_BUSY, radeon_gem_busy_ioctl, DRM_AUTH|DRM_UNLOCKED),
DRM_IOCTL_DEF_DRV(RADEON_GEM_WAIT, radeon_gem_wait_ioctl, DRM_AUTH|DRM_UNLOCKED),
};
int radeon_max_kms_ioctl = DRM_ARRAY_SIZE(radeon_ioctls_kms);
4 changes: 2 additions & 2 deletions drivers/gpu/drm/radeon/radeon_object.h
View file
Original file line number Diff line number Diff line change
Expand Up @@ -119,7 +119,7 @@ static inline u64 radeon_bo_mmap_offset(struct radeon_bo *bo)
}

static inline int radeon_bo_wait(struct radeon_bo *bo, u32 *mem_type,
bool no_wait)
bool no_wait, enum ttm_buffer_usage usage)
{
int r;

Expand All @@ -130,7 +130,7 @@ static inline int radeon_bo_wait(struct radeon_bo *bo, u32 *mem_type,
if (mem_type)
*mem_type = bo->tbo.mem.mem_type;
if (bo->tbo.sync_obj)
r = ttm_bo_wait(&bo->tbo, true, true, no_wait, TTM_USAGE_READWRITE);
r = ttm_bo_wait(&bo->tbo, true, true, no_wait, usage);
spin_unlock(&bo->tbo.bdev->fence_lock);
ttm_bo_unreserve(&bo->tbo);
return r;
Expand Down
11 changes: 11 additions & 0 deletions include/drm/radeon_drm.h
View file
Original file line number Diff line number Diff line change
Expand Up @@ -509,6 +509,7 @@ typedef struct {
#define DRM_RADEON_GEM_SET_TILING 0x28
#define DRM_RADEON_GEM_GET_TILING 0x29
#define DRM_RADEON_GEM_BUSY 0x2a
#define DRM_RADEON_GEM_WAIT 0x2b

#define DRM_IOCTL_RADEON_CP_INIT DRM_IOW( DRM_COMMAND_BASE + DRM_RADEON_CP_INIT, drm_radeon_init_t)
#define DRM_IOCTL_RADEON_CP_START DRM_IO( DRM_COMMAND_BASE + DRM_RADEON_CP_START)
Expand Down Expand Up @@ -550,6 +551,7 @@ typedef struct {
#define DRM_IOCTL_RADEON_GEM_SET_TILING DRM_IOWR(DRM_COMMAND_BASE + DRM_RADEON_GEM_SET_TILING, struct drm_radeon_gem_set_tiling)
#define DRM_IOCTL_RADEON_GEM_GET_TILING DRM_IOWR(DRM_COMMAND_BASE + DRM_RADEON_GEM_GET_TILING, struct drm_radeon_gem_get_tiling)
#define DRM_IOCTL_RADEON_GEM_BUSY DRM_IOWR(DRM_COMMAND_BASE + DRM_RADEON_GEM_BUSY, struct drm_radeon_gem_busy)
#define DRM_IOCTL_RADEON_GEM_WAIT DRM_IOWR(DRM_COMMAND_BASE + DRM_RADEON_GEM_WAIT, struct drm_radeon_gem_wait)

typedef struct drm_radeon_init {
enum {
Expand Down Expand Up @@ -846,6 +848,15 @@ struct drm_radeon_gem_busy {
uint32_t domain;
};

#define RADEON_GEM_NO_WAIT 0x1
#define RADEON_GEM_USAGE_READ 0x2
#define RADEON_GEM_USAGE_WRITE 0x4

struct drm_radeon_gem_wait {
uint32_t handle;
uint32_t flags; /* one of RADEON_GEM_* */
};

struct drm_radeon_gem_pread {
/** Handle for the object being read. */
uint32_t handle;
Expand Down

0 comments on commit d3ed740

Please sign in to comment.