1/* SPDX-License-Identifier: MIT */
2/*
3 * Copyright © 2016 Intel Corporation
4 */
5
6#ifndef __I915_GEM_CONTEXT_H__
7#define __I915_GEM_CONTEXT_H__
8
9#include "i915_gem_context_types.h"
10
11#include "gt/intel_context.h"
12
13#include "i915_drv.h"
14#include "i915_gem.h"
15#include "i915_scheduler.h"
16#include "intel_device_info.h"
17
18struct drm_device;
19struct drm_file;
20
21static inline bool i915_gem_context_is_closed(const struct i915_gem_context *ctx)
22{
23 return test_bit(CONTEXT_CLOSED, &ctx->flags);
24}
25
26static inline void i915_gem_context_set_closed(struct i915_gem_context *ctx)
27{
28 GEM_BUG_ON(i915_gem_context_is_closed(ctx));
29 set_bit(CONTEXT_CLOSED, addr: &ctx->flags);
30}
31
32static inline bool i915_gem_context_no_error_capture(const struct i915_gem_context *ctx)
33{
34 return test_bit(UCONTEXT_NO_ERROR_CAPTURE, &ctx->user_flags);
35}
36
37static inline void i915_gem_context_set_no_error_capture(struct i915_gem_context *ctx)
38{
39 set_bit(UCONTEXT_NO_ERROR_CAPTURE, addr: &ctx->user_flags);
40}
41
42static inline void i915_gem_context_clear_no_error_capture(struct i915_gem_context *ctx)
43{
44 clear_bit(UCONTEXT_NO_ERROR_CAPTURE, addr: &ctx->user_flags);
45}
46
47static inline bool i915_gem_context_is_bannable(const struct i915_gem_context *ctx)
48{
49 return test_bit(UCONTEXT_BANNABLE, &ctx->user_flags);
50}
51
52static inline void i915_gem_context_set_bannable(struct i915_gem_context *ctx)
53{
54 set_bit(UCONTEXT_BANNABLE, addr: &ctx->user_flags);
55}
56
57static inline void i915_gem_context_clear_bannable(struct i915_gem_context *ctx)
58{
59 clear_bit(UCONTEXT_BANNABLE, addr: &ctx->user_flags);
60}
61
62static inline bool i915_gem_context_is_recoverable(const struct i915_gem_context *ctx)
63{
64 return test_bit(UCONTEXT_RECOVERABLE, &ctx->user_flags);
65}
66
67static inline void i915_gem_context_set_recoverable(struct i915_gem_context *ctx)
68{
69 set_bit(UCONTEXT_RECOVERABLE, addr: &ctx->user_flags);
70}
71
72static inline void i915_gem_context_clear_recoverable(struct i915_gem_context *ctx)
73{
74 clear_bit(UCONTEXT_RECOVERABLE, addr: &ctx->user_flags);
75}
76
77static inline bool i915_gem_context_is_persistent(const struct i915_gem_context *ctx)
78{
79 return test_bit(UCONTEXT_PERSISTENCE, &ctx->user_flags);
80}
81
82static inline void i915_gem_context_set_persistence(struct i915_gem_context *ctx)
83{
84 set_bit(UCONTEXT_PERSISTENCE, addr: &ctx->user_flags);
85}
86
87static inline void i915_gem_context_clear_persistence(struct i915_gem_context *ctx)
88{
89 clear_bit(UCONTEXT_PERSISTENCE, addr: &ctx->user_flags);
90}
91
92static inline bool
93i915_gem_context_user_engines(const struct i915_gem_context *ctx)
94{
95 return test_bit(CONTEXT_USER_ENGINES, &ctx->flags);
96}
97
98static inline void
99i915_gem_context_set_user_engines(struct i915_gem_context *ctx)
100{
101 set_bit(CONTEXT_USER_ENGINES, addr: &ctx->flags);
102}
103
104static inline void
105i915_gem_context_clear_user_engines(struct i915_gem_context *ctx)
106{
107 clear_bit(CONTEXT_USER_ENGINES, addr: &ctx->flags);
108}
109
110static inline bool
111i915_gem_context_uses_protected_content(const struct i915_gem_context *ctx)
112{
113 return ctx->uses_protected_content;
114}
115
116/* i915_gem_context.c */
117void i915_gem_init__contexts(struct drm_i915_private *i915);
118
119int i915_gem_context_open(struct drm_i915_private *i915,
120 struct drm_file *file);
121void i915_gem_context_close(struct drm_file *file);
122
123void i915_gem_context_release(struct kref *ctx_ref);
124
125int i915_gem_vm_create_ioctl(struct drm_device *dev, void *data,
126 struct drm_file *file);
127int i915_gem_vm_destroy_ioctl(struct drm_device *dev, void *data,
128 struct drm_file *file);
129
130int i915_gem_context_create_ioctl(struct drm_device *dev, void *data,
131 struct drm_file *file);
132int i915_gem_context_destroy_ioctl(struct drm_device *dev, void *data,
133 struct drm_file *file);
134int i915_gem_context_getparam_ioctl(struct drm_device *dev, void *data,
135 struct drm_file *file_priv);
136int i915_gem_context_setparam_ioctl(struct drm_device *dev, void *data,
137 struct drm_file *file_priv);
138int i915_gem_context_reset_stats_ioctl(struct drm_device *dev, void *data,
139 struct drm_file *file);
140
141struct i915_gem_context *
142i915_gem_context_lookup(struct drm_i915_file_private *file_priv, u32 id);
143
144static inline struct i915_gem_context *
145i915_gem_context_get(struct i915_gem_context *ctx)
146{
147 kref_get(kref: &ctx->ref);
148 return ctx;
149}
150
151static inline void i915_gem_context_put(struct i915_gem_context *ctx)
152{
153 kref_put(kref: &ctx->ref, release: i915_gem_context_release);
154}
155
156static inline struct i915_address_space *
157i915_gem_context_vm(struct i915_gem_context *ctx)
158{
159 return rcu_dereference_protected(ctx->vm, lockdep_is_held(&ctx->mutex));
160}
161
162static inline bool i915_gem_context_has_full_ppgtt(struct i915_gem_context *ctx)
163{
164 GEM_BUG_ON(!!ctx->vm != HAS_FULL_PPGTT(ctx->i915));
165
166 return !!ctx->vm;
167}
168
169static inline struct i915_address_space *
170i915_gem_context_get_eb_vm(struct i915_gem_context *ctx)
171{
172 struct i915_address_space *vm;
173
174 vm = ctx->vm;
175 if (!vm)
176 vm = &to_gt(i915: ctx->i915)->ggtt->vm;
177 vm = i915_vm_get(vm);
178
179 return vm;
180}
181
182static inline struct i915_gem_engines *
183i915_gem_context_engines(struct i915_gem_context *ctx)
184{
185 return rcu_dereference_protected(ctx->engines,
186 lockdep_is_held(&ctx->engines_mutex));
187}
188
189static inline struct i915_gem_engines *
190i915_gem_context_lock_engines(struct i915_gem_context *ctx)
191 __acquires(&ctx->engines_mutex)
192{
193 mutex_lock(&ctx->engines_mutex);
194 return i915_gem_context_engines(ctx);
195}
196
197static inline void
198i915_gem_context_unlock_engines(struct i915_gem_context *ctx)
199 __releases(&ctx->engines_mutex)
200{
201 mutex_unlock(lock: &ctx->engines_mutex);
202}
203
204static inline struct intel_context *
205i915_gem_context_get_engine(struct i915_gem_context *ctx, unsigned int idx)
206{
207 struct intel_context *ce;
208
209 rcu_read_lock(); {
210 struct i915_gem_engines *e = rcu_dereference(ctx->engines);
211 if (unlikely(!e)) /* context was closed! */
212 ce = ERR_PTR(error: -ENOENT);
213 else if (likely(idx < e->num_engines && e->engines[idx]))
214 ce = intel_context_get(ce: e->engines[idx]);
215 else
216 ce = ERR_PTR(error: -EINVAL);
217 } rcu_read_unlock();
218
219 return ce;
220}
221
222static inline void
223i915_gem_engines_iter_init(struct i915_gem_engines_iter *it,
224 struct i915_gem_engines *engines)
225{
226 it->engines = engines;
227 it->idx = 0;
228}
229
230struct intel_context *
231i915_gem_engines_iter_next(struct i915_gem_engines_iter *it);
232
233#define for_each_gem_engine(ce, engines, it) \
234 for (i915_gem_engines_iter_init(&(it), (engines)); \
235 ((ce) = i915_gem_engines_iter_next(&(it)));)
236
237void i915_gem_context_module_exit(void);
238int i915_gem_context_module_init(void);
239
240struct i915_lut_handle *i915_lut_handle_alloc(void);
241void i915_lut_handle_free(struct i915_lut_handle *lut);
242
243int i915_gem_user_to_context_sseu(struct intel_gt *gt,
244 const struct drm_i915_gem_context_param_sseu *user,
245 struct intel_sseu *context);
246
247#endif /* !__I915_GEM_CONTEXT_H__ */
248

source code of linux/drivers/gpu/drm/i915/gem/i915_gem_context.h