diff options
Diffstat (limited to 'linux-core')
| -rw-r--r-- | linux-core/drm_bo.c | 169 | ||||
| -rw-r--r-- | linux-core/drm_drv.c | 1 | ||||
| -rw-r--r-- | linux-core/drm_objects.h | 3 |
3 files changed, 122 insertions, 51 deletions
diff --git a/linux-core/drm_bo.c b/linux-core/drm_bo.c index 75d89e46..53885a3e 100644 --- a/linux-core/drm_bo.c +++ b/linux-core/drm_bo.c @@ -80,8 +80,7 @@ void drm_bo_add_to_lru(struct drm_buffer_object * bo) DRM_ASSERT_LOCKED(&bo->dev->struct_mutex); - if (!(bo->mem.mask & (DRM_BO_FLAG_NO_MOVE | DRM_BO_FLAG_NO_EVICT)) - || bo->mem.mem_type != bo->pinned_mem_type) { + if (!bo->pinned || bo->mem.mem_type != bo->pinned_mem_type) { man = &bo->dev->bm.man[bo->mem.mem_type]; list_add_tail(&bo->lru, &man->lru); } else { @@ -733,7 +732,7 @@ static int drm_bo_mem_force_space(struct drm_device * dev, atomic_inc(&entry->usage); mutex_unlock(&dev->struct_mutex); mutex_lock(&entry->mutex); - BUG_ON(entry->mem.flags & (DRM_BO_FLAG_NO_MOVE | DRM_BO_FLAG_NO_EVICT)); + BUG_ON(entry->pinned); ret = drm_bo_evict(entry, mem_type, no_wait); mutex_unlock(&entry->mutex); @@ -893,18 +892,6 @@ static int drm_bo_new_mask(struct drm_buffer_object * bo, DRM_ERROR("User buffers are not supported yet\n"); return -EINVAL; } - if (bo->type == drm_bo_type_fake && - !(new_mask & (DRM_BO_FLAG_NO_MOVE | DRM_BO_FLAG_NO_EVICT))) { - DRM_ERROR("Fake buffers must be pinned.\n"); - return -EINVAL; - } - - if ((new_mask & DRM_BO_FLAG_NO_EVICT) && !DRM_SUSER(DRM_CURPROC)) { - DRM_ERROR - ("DRM_BO_FLAG_NO_EVICT is only available to priviliged " - "processes\n"); - return -EPERM; - } new_props = new_mask & (DRM_BO_FLAG_EXE | DRM_BO_FLAG_WRITE | DRM_BO_FLAG_READ); @@ -1382,6 +1369,12 @@ static int drm_buffer_object_validate(struct drm_buffer_object * bo, return ret; } + if (bo->pinned && bo->pinned_mem_type != bo->mem.mem_type) { + DRM_ERROR("Attempt to validate pinned buffer into different memory " + "type\n"); + return -EINVAL; + } + /* * We're switching command submission mechanism, * or cannot simply rely on the hardware serializing for us. @@ -1426,37 +1419,6 @@ static int drm_buffer_object_validate(struct drm_buffer_object * bo, } /* - * Pinned buffers. - */ - - if (bo->mem.mask & (DRM_BO_FLAG_NO_EVICT | DRM_BO_FLAG_NO_MOVE)) { - bo->pinned_mem_type = bo->mem.mem_type; - mutex_lock(&dev->struct_mutex); - list_del_init(&bo->pinned_lru); - drm_bo_add_to_pinned_lru(bo); - - if (bo->pinned_node != bo->mem.mm_node) { - if (bo->pinned_node != NULL) - drm_mm_put_block(bo->pinned_node); - bo->pinned_node = bo->mem.mm_node; - } - - mutex_unlock(&dev->struct_mutex); - - } else if (bo->pinned_node != NULL) { - - mutex_lock(&dev->struct_mutex); - - if (bo->pinned_node != bo->mem.mm_node) - drm_mm_put_block(bo->pinned_node); - - list_del_init(&bo->pinned_lru); - bo->pinned_node = NULL; - mutex_unlock(&dev->struct_mutex); - - } - - /* * We might need to add a TTM. */ @@ -1533,6 +1495,10 @@ static int drm_bo_handle_validate(struct drm_file *file_priv, return ret; } +/** + * Fills out the generic buffer object ioctl reply with the information for + * the BO with id of handle. + */ static int drm_bo_handle_info(struct drm_file *file_priv, uint32_t handle, struct drm_bo_info_rep *rep) { @@ -1948,6 +1914,110 @@ int drm_bo_wait_idle_ioctl(struct drm_device *dev, void *data, struct drm_file * return 0; } +/** + * Pins or unpins the given buffer object in the given memory area. + * + * Pinned buffers will not be evicted from or move within their memory area. + * Must be called with the hardware lock held for pinning. + */ +static int +drm_bo_set_pin(struct drm_device *dev, struct drm_buffer_object *bo, + int pin) +{ + int ret = 0; + + mutex_lock(&bo->mutex); + if (bo->pinned == pin) { + mutex_unlock(&bo->mutex); + return 0; + } + + if (pin) { + ret = drm_bo_wait_unfenced(bo, 0, 0); + if (ret) { + mutex_unlock(&bo->mutex); + return ret; + } + + /* Validate the buffer into its pinned location, with no pending + * fence. + */ + ret = drm_buffer_object_validate(bo, 0, 0, 0); + if (ret) { + mutex_unlock(&bo->mutex); + return ret; + } + + /* Add our buffer to the pinned list */ + bo->pinned_mem_type = bo->mem.mem_type; + mutex_lock(&dev->struct_mutex); + list_del_init(&bo->pinned_lru); + drm_bo_add_to_pinned_lru(bo); + + if (bo->pinned_node != bo->mem.mm_node) { + if (bo->pinned_node != NULL) + drm_mm_put_block(bo->pinned_node); + bo->pinned_node = bo->mem.mm_node; + } + + mutex_unlock(&dev->struct_mutex); + + } else { + mutex_lock(&dev->struct_mutex); + + /* Remove our buffer from the pinned list */ + if (bo->pinned_node != bo->mem.mm_node) + drm_mm_put_block(bo->pinned_node); + + list_del_init(&bo->pinned_lru); + bo->pinned_node = NULL; + mutex_unlock(&dev->struct_mutex); + } + bo->pinned = pin; + mutex_unlock(&bo->mutex); + return 0; +} + +int drm_bo_set_pin_ioctl(struct drm_device *dev, void *data, + struct drm_file *file_priv) +{ + struct drm_bo_set_pin_arg *arg = data; + struct drm_bo_set_pin_req *req = &arg->d.req; + struct drm_bo_info_rep *rep = &arg->d.rep; + struct drm_buffer_object *bo; + int ret; + + if (!dev->bm.initialized) { + DRM_ERROR("Buffer object manager is not initialized.\n"); + return -EINVAL; + } + + if (req->pin < 0 || req->pin > 1) { + DRM_ERROR("Bad arguments to set_pin\n"); + return -EINVAL; + } + + if (req->pin) + LOCK_TEST_WITH_RETURN(dev, file_priv); + + mutex_lock(&dev->struct_mutex); + bo = drm_lookup_buffer_object(file_priv, req->handle, 1); + mutex_unlock(&dev->struct_mutex); + if (!bo) { + return -EINVAL; + } + + ret = drm_bo_set_pin(dev, bo, req->pin); + if (ret) { + drm_bo_usage_deref_unlocked(&bo); + return ret; + } + + drm_bo_fill_rep_arg(bo, rep); + drm_bo_usage_deref_unlocked(&bo); + + return 0; +} /** @@ -2009,11 +2079,10 @@ static int drm_bo_leave_list(struct drm_buffer_object * bo, mutex_unlock(&dev->struct_mutex); } - if (bo->mem.flags & DRM_BO_FLAG_NO_EVICT) { - DRM_ERROR("A DRM_BO_NO_EVICT buffer present at " + if (bo->pinned) { + DRM_ERROR("A pinned buffer was present at " "cleanup. Removing flag and evicting.\n"); - bo->mem.flags &= ~DRM_BO_FLAG_NO_EVICT; - bo->mem.mask &= ~DRM_BO_FLAG_NO_EVICT; + bo->pinned = 0; } if (bo->mem.mem_type == mem_type) diff --git a/linux-core/drm_drv.c b/linux-core/drm_drv.c index cc676bda..93dfcdb5 100644 --- a/linux-core/drm_drv.c +++ b/linux-core/drm_drv.c @@ -147,6 +147,7 @@ static struct drm_ioctl_desc drm_ioctls[] = { DRM_IOCTL_DEF(DRM_IOCTL_BO_OP, drm_bo_op_ioctl, DRM_AUTH), DRM_IOCTL_DEF(DRM_IOCTL_BO_INFO, drm_bo_info_ioctl, DRM_AUTH), DRM_IOCTL_DEF(DRM_IOCTL_BO_WAIT_IDLE, drm_bo_wait_idle_ioctl, DRM_AUTH), + DRM_IOCTL_DEF(DRM_IOCTL_BO_SET_PIN, drm_bo_set_pin_ioctl, DRM_AUTH | DRM_MASTER | DRM_ROOT_ONLY), }; #define DRM_CORE_IOCTL_COUNT ARRAY_SIZE( drm_ioctls ) diff --git a/linux-core/drm_objects.h b/linux-core/drm_objects.h index e5f2b69c..64f71651 100644 --- a/linux-core/drm_objects.h +++ b/linux-core/drm_objects.h @@ -362,6 +362,7 @@ struct drm_buffer_object { struct mutex mutex; /* For pinned buffers */ + int pinned; struct drm_mm_node *pinned_node; uint32_t pinned_mem_type; struct list_head pinned_lru; @@ -455,7 +456,7 @@ extern int drm_bo_unreference_ioctl(struct drm_device *dev, void *data, struct d extern int drm_bo_wait_idle_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv); extern int drm_bo_info_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv); extern int drm_bo_op_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv); - +int drm_bo_set_pin_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv); extern int drm_mm_init_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv); extern int drm_mm_takedown_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv); |