1 /*
2  * SPDX-License-Identifier: MIT
3  *
4  * Copyright © 2018 Intel Corporation
5  */
6 
7 #ifndef _I915_PRIOLIST_TYPES_H_
8 #define _I915_PRIOLIST_TYPES_H_
9 
10 #include <linux/list.h>
11 #include <linux/rbtree.h>
12 
13 #include <uapi/drm/i915_drm.h>
14 
15 enum {
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,
19 
20 	I915_PRIORITY_INVALID = INT_MIN
21 };
22 
23 #define I915_USER_PRIORITY_SHIFT 2
24 #define I915_USER_PRIORITY(x) ((x) << I915_USER_PRIORITY_SHIFT)
25 
26 #define I915_PRIORITY_COUNT BIT(I915_USER_PRIORITY_SHIFT)
27 #define I915_PRIORITY_MASK (I915_PRIORITY_COUNT - 1)
28 
29 #define I915_PRIORITY_WAIT		((u8)BIT(0))
30 #define I915_PRIORITY_NOSEMAPHORE	((u8)BIT(1))
31 
32 #define __NO_PREEMPTION (I915_PRIORITY_WAIT)
33 
34 struct i915_priolist {
35 	struct list_head requests[I915_PRIORITY_COUNT];
36 	struct rb_node node;
37 	unsigned long used;
38 	int priority;
39 };
40 
41 #endif /* _I915_PRIOLIST_TYPES_H_ */
42