2 * SPDX-License-Identifier: MIT
4 * Copyright © 2018 Intel Corporation
7 #ifndef _I915_PRIOLIST_TYPES_H_
8 #define _I915_PRIOLIST_TYPES_H_
10 #include <linux/list.h>
11 #include <linux/rbtree.h>
13 #include <uapi/drm/i915_drm.h>
16 I915_PRIORITY_MIN
= I915_CONTEXT_MIN_USER_PRIORITY
- 1,
17 I915_PRIORITY_NORMAL
= I915_CONTEXT_DEFAULT_PRIORITY
,
18 I915_PRIORITY_MAX
= I915_CONTEXT_MAX_USER_PRIORITY
+ 1,
20 /* A preemptive pulse used to monitor the health of each engine */
21 I915_PRIORITY_HEARTBEAT
,
23 /* Interactive workload, scheduled for immediate pageflipping */
24 I915_PRIORITY_DISPLAY
,
27 #define I915_USER_PRIORITY_SHIFT 2
28 #define I915_USER_PRIORITY(x) ((x) << I915_USER_PRIORITY_SHIFT)
30 #define I915_PRIORITY_COUNT BIT(I915_USER_PRIORITY_SHIFT)
31 #define I915_PRIORITY_MASK (I915_PRIORITY_COUNT - 1)
33 #define I915_PRIORITY_WAIT ((u8)BIT(0))
34 #define I915_PRIORITY_NOSEMAPHORE ((u8)BIT(1))
36 /* Smallest priority value that cannot be bumped. */
37 #define I915_PRIORITY_INVALID (INT_MIN | (u8)I915_PRIORITY_MASK)
40 * Requests containing performance queries must not be preempted by
41 * another context. They get scheduled with their default priority and
42 * once they reach the execlist ports we ensure that they stick on the
43 * HW until finished by pretending that they have maximum priority,
44 * i.e. nothing can have higher priority and force us to usurp the
47 #define I915_PRIORITY_UNPREEMPTABLE INT_MAX
48 #define I915_PRIORITY_BARRIER INT_MAX
50 #define __NO_PREEMPTION (I915_PRIORITY_WAIT)
52 struct i915_priolist
{
53 struct list_head requests
[I915_PRIORITY_COUNT
];
59 #endif /* _I915_PRIOLIST_TYPES_H_ */