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1# SPDX-License-Identifier: GPL-2.0-only
2config DRM_I915_WERROR
3 bool "Force GCC to throw an error instead of a warning when compiling"
4 # As this may inadvertently break the build, only allow the user
5 # to shoot oneself in the foot iff they aim really hard
6 depends on EXPERT
7 # We use the dependency on !COMPILE_TEST to not be enabled in
8 # allmodconfig or allyesconfig configurations
9 depends on !COMPILE_TEST
10 default n
11 help
12 Add -Werror to the build flags for (and only for) i915.ko.
13 Do not enable this unless you are writing code for the i915.ko module.
14
15 Recommended for driver developers only.
16
17 If in doubt, say "N".
18
19config DRM_I915_REPLAY_GPU_HANGS_API
20 bool "Enable GPU hang replay userspace API"
21 depends on DRM_I915
22 depends on EXPERT
23 default n
24 help
25 Choose this option if you want to enable special and unstable
26 userspace API used for replaying GPU hangs on a running system.
27
28 This API is intended to be used by userspace graphics stack developers
29 and provides no stability guarantees.
30
31 The API needs to be activated at boot time using the
32 enable_debug_only_api module parameter.
33
34 If in doubt, say "N".
35
36config DRM_I915_DEBUG
37 bool "Enable additional driver debugging"
38 depends on DRM_I915
39 depends on EXPERT # only for developers
40 depends on !COMPILE_TEST # never built by robots
41 select DEBUG_FS
42 select PREEMPT_COUNT
43 select I2C_CHARDEV
44 select REF_TRACKER
45 select STACKDEPOT
46 select STACKTRACE
47 select DRM_DISPLAY_DP_AUX_CHARDEV
48 select DRM_DISPLAY_DP_TUNNEL_STATE_DEBUG if DRM_I915_DP_TUNNEL
49 select X86_MSR # used by igt/pm_rpm
50 select DRM_VGEM # used by igt/prime_vgem (dmabuf interop checks)
51 select DRM_DEBUG_MM if DRM=y
52 select DRM_EXPORT_FOR_TESTS if m
53 select DRM_DEBUG_SELFTEST
54 select DMABUF_SELFTESTS
55 select SW_SYNC # signaling validation framework (igt/syncobj*)
56 select DRM_I915_WERROR
57 select DRM_I915_DEBUG_GEM
58 select DRM_I915_DEBUG_GEM_ONCE
59 select DRM_I915_DEBUG_MMIO
60 select DRM_I915_DEBUG_RUNTIME_PM
61 select DRM_I915_DEBUG_WAKEREF
62 select DRM_I915_SW_FENCE_DEBUG_OBJECTS
63 select DRM_I915_SELFTEST
64 default n
65 help
66 Choose this option to turn on extra driver debugging that may affect
67 performance but will catch some internal issues.
68
69 Recommended for driver developers only.
70
71 If in doubt, say "N".
72
73config DRM_I915_DEBUG_MMIO
74 bool "Always insert extra checks around mmio access by default"
75 default n
76 help
77 By default, always enables the extra sanity checks (extra register
78 reads) around every mmio (register) access that will slow the system
79 down. This sets the default value of i915.mmio_debug to -1 and can
80 be overridden at module load.
81
82 Recommended for driver developers only.
83
84 If in doubt, say "N".
85
86config DRM_I915_DEBUG_GEM
87 bool "Insert extra checks into the GEM internals"
88 default n
89 depends on DRM_I915_WERROR
90 help
91 Enable extra sanity checks (including BUGs) along the GEM driver
92 paths that may slow the system down and if hit hang the machine.
93
94 Recommended for driver developers only.
95
96 If in doubt, say "N".
97
98config DRM_I915_DEBUG_GEM_ONCE
99 bool "Make a GEM debug failure fatal"
100 default n
101 depends on DRM_I915_DEBUG_GEM
102 help
103 During development, we often only want the very first failure
104 as that would otherwise be lost in the deluge of subsequent
105 failures. However, more casual testers may not want to trigger
106 a hard BUG_ON and hope that the system remains sufficiently usable
107 to capture a bug report in situ.
108
109 Recommended for driver developers only.
110
111 If in doubt, say "N".
112
113config DRM_I915_ERRLOG_GEM
114 bool "Insert extra logging (very verbose) for common GEM errors"
115 default n
116 depends on DRM_I915_DEBUG_GEM
117 help
118 Enable additional logging that may help track down the cause of
119 principally userspace errors.
120
121 Recommended for driver developers only.
122
123 If in doubt, say "N".
124
125config DRM_I915_TRACE_GEM
126 bool "Insert extra ftrace output from the GEM internals"
127 depends on DRM_I915_DEBUG_GEM
128 select TRACING
129 default n
130 help
131 Enable additional and verbose debugging output that will spam
132 ordinary tests, but may be vital for post-mortem debugging when
133 used with /proc/sys/kernel/ftrace_dump_on_oops
134
135 Recommended for driver developers only.
136
137 If in doubt, say "N".
138
139config DRM_I915_TRACE_GTT
140 bool "Insert extra ftrace output from the GTT internals"
141 depends on DRM_I915_DEBUG_GEM
142 select TRACING
143 default n
144 help
145 Enable additional and verbose debugging output that will spam
146 ordinary tests, but may be vital for post-mortem debugging when
147 used with /proc/sys/kernel/ftrace_dump_on_oops
148
149 Recommended for driver developers only.
150
151 If in doubt, say "N".
152
153config DRM_I915_SW_FENCE_DEBUG_OBJECTS
154 bool "Enable additional driver debugging for fence objects"
155 depends on DRM_I915
156 select DEBUG_OBJECTS
157 default n
158 help
159 Choose this option to turn on extra driver debugging that may affect
160 performance but will catch some internal issues.
161
162 Recommended for driver developers only.
163
164 If in doubt, say "N".
165
166config DRM_I915_SW_FENCE_CHECK_DAG
167 bool "Enable additional driver debugging for detecting dependency cycles"
168 depends on DRM_I915
169 default n
170 help
171 Choose this option to turn on extra driver debugging that may affect
172 performance but will catch some internal issues.
173
174 Recommended for driver developers only.
175
176 If in doubt, say "N".
177
178config DRM_I915_DEBUG_GUC
179 bool "Enable additional driver debugging for GuC"
180 depends on DRM_I915
181 select STACKDEPOT
182 default n
183 help
184 Choose this option to turn on extra driver debugging that may affect
185 performance but will help resolve GuC related issues.
186
187 Recommended for driver developers only.
188
189 If in doubt, say "N".
190
191config DRM_I915_SELFTEST
192 bool "Enable selftests upon driver load"
193 depends on DRM_I915
194 default n
195 select DRM_EXPORT_FOR_TESTS if m
196 select FAULT_INJECTION
197 select PRIME_NUMBERS
198 select CRC32
199 help
200 Choose this option to allow the driver to perform selftests upon
201 loading; also requires the i915.selftest=1 module parameter. To
202 exit the module after running the selftests (i.e. to prevent normal
203 module initialisation afterwards) use i915.selftest=-1.
204
205 Recommended for driver developers only.
206
207 If in doubt, say "N".
208
209config DRM_I915_SELFTEST_BROKEN
210 bool "Enable broken and dangerous selftests"
211 depends on DRM_I915_SELFTEST
212 depends on BROKEN
213 default n
214 help
215 This option enables the execution of selftests that are "dangerous"
216 and may trigger unintended HW side-effects as they break strict
217 rules given in the HW specification. For science.
218
219 Recommended for masochistic driver developers only.
220
221 If in doubt, say "N".
222
223config DRM_I915_LOW_LEVEL_TRACEPOINTS
224 bool "Enable low level request tracing events"
225 depends on DRM_I915
226 default n
227 help
228 Choose this option to turn on low level request tracing events.
229 This provides the ability to precisely monitor engine utilisation
230 and also analyze the request dependency resolving timeline.
231
232 Recommended for driver developers only.
233
234 If in doubt, say "N".
235
236config DRM_I915_DEBUG_VBLANK_EVADE
237 bool "Enable extra debug warnings for vblank evasion"
238 depends on DRM_I915
239 default n
240 help
241 Choose this option to turn on extra debug warnings for the
242 vblank evade mechanism. This gives a warning every time the
243 the deadline allotted for the vblank evade critical section
244 is exceeded, even if there isn't an actual risk of missing
245 the vblank.
246
247 Recommended for driver developers only.
248
249 If in doubt, say "N".
250
251config DRM_I915_DEBUG_RUNTIME_PM
252 bool "Enable extra state checking for runtime PM"
253 depends on DRM_I915
254 default n
255 select REF_TRACKER
256 select STACKDEPOT
257 select STACKTRACE
258 help
259 Choose this option to turn on extra state checking for the
260 runtime PM functionality. This may introduce overhead during
261 driver loading, suspend and resume operations.
262
263 Recommended for driver developers only.
264
265 If in doubt, say "N"
266
267config DRM_I915_DEBUG_WAKEREF
268 bool "Enable extra tracking for wakerefs"
269 depends on DRM_I915
270 select REF_TRACKER
271 select STACKDEPOT
272 select STACKTRACE
273 help
274 Choose this option to turn on extra state checking and usage
275 tracking for the wakerefPM functionality. This may introduce
276 overhead during driver runtime.
277
278 If in doubt, say "N"
1# SPDX-License-Identifier: GPL-2.0-only
2config DRM_I915_WERROR
3 bool "Force GCC to throw an error instead of a warning when compiling"
4 # As this may inadvertently break the build, only allow the user
5 # to shoot oneself in the foot iff they aim really hard
6 depends on EXPERT
7 # We use the dependency on !COMPILE_TEST to not be enabled in
8 # allmodconfig or allyesconfig configurations
9 depends on !COMPILE_TEST
10 default n
11 help
12 Add -Werror to the build flags for (and only for) i915.ko.
13 Do not enable this unless you are writing code for the i915.ko module.
14
15 Recommended for driver developers only.
16
17 If in doubt, say "N".
18
19config DRM_I915_DEBUG
20 bool "Enable additional driver debugging"
21 depends on DRM_I915
22 select DEBUG_FS
23 select PREEMPT_COUNT
24 select I2C_CHARDEV
25 select STACKDEPOT
26 select DRM_DP_AUX_CHARDEV
27 select X86_MSR # used by igt/pm_rpm
28 select DRM_VGEM # used by igt/prime_vgem (dmabuf interop checks)
29 select DRM_DEBUG_MM if DRM=y
30 select DRM_EXPORT_FOR_TESTS if m
31 select DRM_DEBUG_SELFTEST
32 select DMABUF_SELFTESTS
33 select SW_SYNC # signaling validation framework (igt/syncobj*)
34 select DRM_I915_SW_FENCE_DEBUG_OBJECTS
35 select DRM_I915_SELFTEST
36 select DRM_I915_DEBUG_RUNTIME_PM
37 select DRM_I915_DEBUG_MMIO
38 default n
39 help
40 Choose this option to turn on extra driver debugging that may affect
41 performance but will catch some internal issues.
42
43 Recommended for driver developers only.
44
45 If in doubt, say "N".
46
47config DRM_I915_DEBUG_MMIO
48 bool "Always insert extra checks around mmio access by default"
49 default n
50 help
51 By default, always enables the extra sanity checks (extra register
52 reads) around every mmio (register) access that will slow the system
53 down. This sets the default value of i915.mmio_debug to -1 and can
54 be overridden at module load.
55
56 Recommended for driver developers only.
57
58 If in doubt, say "N".
59
60config DRM_I915_DEBUG_GEM
61 bool "Insert extra checks into the GEM internals"
62 default n
63 depends on DRM_I915_WERROR
64 help
65 Enable extra sanity checks (including BUGs) along the GEM driver
66 paths that may slow the system down and if hit hang the machine.
67
68 Recommended for driver developers only.
69
70 If in doubt, say "N".
71
72config DRM_I915_ERRLOG_GEM
73 bool "Insert extra logging (very verbose) for common GEM errors"
74 default n
75 depends on DRM_I915_DEBUG_GEM
76 help
77 Enable additional logging that may help track down the cause of
78 principally userspace errors.
79
80 Recommended for driver developers only.
81
82 If in doubt, say "N".
83
84config DRM_I915_TRACE_GEM
85 bool "Insert extra ftrace output from the GEM internals"
86 depends on DRM_I915_DEBUG_GEM
87 select TRACING
88 default n
89 help
90 Enable additional and verbose debugging output that will spam
91 ordinary tests, but may be vital for post-mortem debugging when
92 used with /proc/sys/kernel/ftrace_dump_on_oops
93
94 Recommended for driver developers only.
95
96 If in doubt, say "N".
97
98config DRM_I915_TRACE_GTT
99 bool "Insert extra ftrace output from the GTT internals"
100 depends on DRM_I915_DEBUG_GEM
101 select TRACING
102 default n
103 help
104 Enable additional and verbose debugging output that will spam
105 ordinary tests, but may be vital for post-mortem debugging when
106 used with /proc/sys/kernel/ftrace_dump_on_oops
107
108 Recommended for driver developers only.
109
110 If in doubt, say "N".
111
112config DRM_I915_SW_FENCE_DEBUG_OBJECTS
113 bool "Enable additional driver debugging for fence objects"
114 depends on DRM_I915
115 select DEBUG_OBJECTS
116 default n
117 help
118 Choose this option to turn on extra driver debugging that may affect
119 performance but will catch some internal issues.
120
121 Recommended for driver developers only.
122
123 If in doubt, say "N".
124
125config DRM_I915_SW_FENCE_CHECK_DAG
126 bool "Enable additional driver debugging for detecting dependency cycles"
127 depends on DRM_I915
128 default n
129 help
130 Choose this option to turn on extra driver debugging that may affect
131 performance but will catch some internal issues.
132
133 Recommended for driver developers only.
134
135 If in doubt, say "N".
136
137config DRM_I915_DEBUG_GUC
138 bool "Enable additional driver debugging for GuC"
139 depends on DRM_I915
140 default n
141 help
142 Choose this option to turn on extra driver debugging that may affect
143 performance but will help resolve GuC related issues.
144
145 Recommended for driver developers only.
146
147 If in doubt, say "N".
148
149config DRM_I915_SELFTEST
150 bool "Enable selftests upon driver load"
151 depends on DRM_I915
152 default n
153 select DRM_EXPORT_FOR_TESTS if m
154 select FAULT_INJECTION
155 select PRIME_NUMBERS
156 help
157 Choose this option to allow the driver to perform selftests upon
158 loading; also requires the i915.selftest=1 module parameter. To
159 exit the module after running the selftests (i.e. to prevent normal
160 module initialisation afterwards) use i915.selftest=-1.
161
162 Recommended for driver developers only.
163
164 If in doubt, say "N".
165
166config DRM_I915_SELFTEST_BROKEN
167 bool "Enable broken and dangerous selftests"
168 depends on DRM_I915_SELFTEST
169 depends on BROKEN
170 default n
171 help
172 This option enables the execution of selftests that are "dangerous"
173 and may trigger unintended HW side-effects as they break strict
174 rules given in the HW specification. For science.
175
176 Recommended for masochistic driver developers only.
177
178 If in doubt, say "N".
179
180config DRM_I915_LOW_LEVEL_TRACEPOINTS
181 bool "Enable low level request tracing events"
182 depends on DRM_I915
183 default n
184 help
185 Choose this option to turn on low level request tracing events.
186 This provides the ability to precisely monitor engine utilisation
187 and also analyze the request dependency resolving timeline.
188
189 If in doubt, say "N".
190
191config DRM_I915_DEBUG_VBLANK_EVADE
192 bool "Enable extra debug warnings for vblank evasion"
193 depends on DRM_I915
194 default n
195 help
196 Choose this option to turn on extra debug warnings for the
197 vblank evade mechanism. This gives a warning every time the
198 the deadline allotted for the vblank evade critical section
199 is exceeded, even if there isn't an actual risk of missing
200 the vblank.
201
202 If in doubt, say "N".
203
204config DRM_I915_DEBUG_RUNTIME_PM
205 bool "Enable extra state checking for runtime PM"
206 depends on DRM_I915
207 default n
208 select STACKDEPOT
209 help
210 Choose this option to turn on extra state checking for the
211 runtime PM functionality. This may introduce overhead during
212 driver loading, suspend and resume operations.
213
214 If in doubt, say "N"