diff options
Diffstat (limited to 'drivers/gpu/drm/i915/i915_scheduler.h')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_scheduler.h | 113 |
1 files changed, 113 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_scheduler.h b/drivers/gpu/drm/i915/i915_scheduler.h new file mode 100644 index 000000000000..c895c4cbc68e --- /dev/null +++ b/drivers/gpu/drm/i915/i915_scheduler.h @@ -0,0 +1,113 @@ +/* + * Copyright (c) 2014 Intel Corporation + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the next + * paragraph) shall be included in all copies or substantial portions of the + * Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS + * IN THE SOFTWARE. + * + */ + +#ifndef _I915_SCHEDULER_H_ +#define _I915_SCHEDULER_H_ + +enum i915_scheduler_queue_status { + /* Limbo: */ + I915_SQS_NONE = 0, + /* Not yet submitted to hardware: */ + I915_SQS_QUEUED, + /* Popped from queue, ready to fly: */ + I915_SQS_POPPED, + /* Sent to hardware for processing: */ + I915_SQS_FLYING, + /* Finished processing on the hardware: */ + I915_SQS_COMPLETE, + /* Killed by watchdog or catastrophic submission failure: */ + I915_SQS_DEAD, + /* Limit value for use with arrays/loops */ + I915_SQS_MAX +}; + +#define I915_SQS_IS_QUEUED(node) (((node)->status == I915_SQS_QUEUED)) +#define I915_SQS_IS_FLYING(node) (((node)->status == I915_SQS_FLYING)) +#define I915_SQS_IS_COMPLETE(node) (((node)->status == I915_SQS_COMPLETE) || \ + ((node)->status == I915_SQS_DEAD)) + +struct i915_scheduler_obj_entry { + struct drm_i915_gem_object *obj; + bool read_only; +}; + +struct i915_scheduler_queue_entry { + /* Any information required to submit this batch buffer to the hardware */ + struct i915_execbuffer_params params; + + /* -1023 = lowest priority, 0 = default, 1023 = highest */ + int32_t priority; + bool bumped; + + /* Objects referenced by this batch buffer */ + struct i915_scheduler_obj_entry *objs; + int num_objs; + + /* Batch buffers this one is dependent upon */ + struct i915_scheduler_queue_entry **dep_list; + int num_deps; + + enum i915_scheduler_queue_status status; + unsigned long stamp; + + /* List of all scheduler queue entry nodes */ + struct list_head link; +}; + +struct i915_scheduler_node_states { + uint32_t flying; + uint32_t queued; +}; + +struct i915_scheduler { + struct list_head node_queue[I915_NUM_ENGINES]; + uint32_t flags[I915_NUM_ENGINES]; + spinlock_t lock; + + /* Node counts: */ + struct i915_scheduler_node_states counts[I915_NUM_ENGINES]; + + /* Tuning parameters: */ + int32_t priority_level_min; + int32_t priority_level_max; + int32_t priority_level_bump; + int32_t priority_level_preempt; + uint32_t min_flying; +}; + +/* Flag bits for i915_scheduler::flags */ +enum { + I915_SF_INTERRUPTS_ENABLED = (1 << 0), + I915_SF_SUBMITTING = (1 << 1), +}; + +bool i915_scheduler_is_enabled(struct drm_device *dev); +int i915_scheduler_init(struct drm_device *dev); +void i915_scheduler_destroy(struct drm_i915_private *dev_priv); +void i915_scheduler_clean_node(struct i915_scheduler_queue_entry *node); +int i915_scheduler_queue_execbuffer(struct i915_scheduler_queue_entry *qe); +bool i915_scheduler_notify_request(struct drm_i915_gem_request *req); +void i915_scheduler_wakeup(struct drm_device *dev); + +#endif /* _I915_SCHEDULER_H_ */ |