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	select HEADER_TEST
 11        default n
 12        help
 13          Add -Werror to the build flags for (and only for) i915.ko.
 14          Do not enable this unless you are writing code for the i915.ko module.
 15
 16          Recommended for driver developers only.
 17
 18          If in doubt, say "N".
 19
 20config DRM_I915_DEBUG
 21        bool "Enable additional driver debugging"
 22        depends on DRM_I915
 23        select DEBUG_FS
 24        select PREEMPT_COUNT
 25        select REFCOUNT_FULL
 26        select I2C_CHARDEV
 27        select STACKDEPOT
 28        select DRM_DP_AUX_CHARDEV
 29        select X86_MSR # used by igt/pm_rpm
 30        select DRM_VGEM # used by igt/prime_vgem (dmabuf interop checks)
 31        select DRM_DEBUG_MM if DRM=y
 32	select DRM_DEBUG_SELFTEST
 33	select DMABUF_SELFTESTS
 34	select SW_SYNC # signaling validation framework (igt/syncobj*)
 35	select DRM_I915_SW_FENCE_DEBUG_OBJECTS
 36	select DRM_I915_SELFTEST
 37	select DRM_I915_DEBUG_RUNTIME_PM
 38	select DRM_I915_DEBUG_MMIO
 39        default n
 40        help
 41          Choose this option to turn on extra driver debugging that may affect
 42          performance but will catch some internal issues.
 43
 44          Recommended for driver developers only.
 45
 46          If in doubt, say "N".
 47
 48config DRM_I915_DEBUG_MMIO
 49	bool "Always insert extra checks around mmio access by default"
 50	default n
 51	help
 52	  By default, always enables the extra sanity checks (extra register
 53	  reads) around every mmio (register) access that will slow the system
 54	  down. This sets the default value of i915.mmio_debug to -1 and can
 55	  be overridden at module load.
 56
 57	  Recommended for driver developers only.
 58
 59	  If in doubt, say "N".
 60
 61config DRM_I915_DEBUG_GEM
 62        bool "Insert extra checks into the GEM internals"
 63        default n
 64        depends on DRM_I915_WERROR
 65        help
 66          Enable extra sanity checks (including BUGs) along the GEM driver
 67          paths that may slow the system down and if hit hang the machine.
 68
 69          Recommended for driver developers only.
 70
 71          If in doubt, say "N".
 72
 73config DRM_I915_ERRLOG_GEM
 74	bool "Insert extra logging (very verbose) for common GEM errors"
 75	default n
 76	depends on DRM_I915_DEBUG_GEM
 77	help
 78	  Enable additional logging that may help track down the cause of
 79	  principally userspace errors.
 80
 81	  Recommended for driver developers only.
 82
 83	  If in doubt, say "N".
 84
 85config DRM_I915_TRACE_GEM
 86	bool "Insert extra ftrace output from the GEM internals"
 87	depends on DRM_I915_DEBUG_GEM
 88	select TRACING
 89	default n
 90	help
 91	  Enable additional and verbose debugging output that will spam
 92	  ordinary tests, but may be vital for post-mortem debugging when
 93	  used with /proc/sys/kernel/ftrace_dump_on_oops
 94
 95	  Recommended for driver developers only.
 96
 97	  If in doubt, say "N".
 98
 99config DRM_I915_TRACE_GTT
100	bool "Insert extra ftrace output from the GTT internals"
101	depends on DRM_I915_DEBUG_GEM
102	select TRACING
103	default n
104	help
105	  Enable additional and verbose debugging output that will spam
106	  ordinary tests, but may be vital for post-mortem debugging when
107	  used with /proc/sys/kernel/ftrace_dump_on_oops
108
109	  Recommended for driver developers only.
110
111	  If in doubt, say "N".
112
113config DRM_I915_SW_FENCE_DEBUG_OBJECTS
114        bool "Enable additional driver debugging for fence objects"
115        depends on DRM_I915
116        select DEBUG_OBJECTS
117        default n
118        help
119          Choose this option to turn on extra driver debugging that may affect
120          performance but will catch some internal issues.
121
122          Recommended for driver developers only.
123
124          If in doubt, say "N".
125
126config DRM_I915_SW_FENCE_CHECK_DAG
127        bool "Enable additional driver debugging for detecting dependency cycles"
128        depends on DRM_I915
129        default n
130        help
131          Choose this option to turn on extra driver debugging that may affect
132          performance but will catch some internal issues.
133
134          Recommended for driver developers only.
135
136          If in doubt, say "N".
137
138config DRM_I915_DEBUG_GUC
139        bool "Enable additional driver debugging for GuC"
140        depends on DRM_I915
141        default n
142        help
143          Choose this option to turn on extra driver debugging that may affect
144          performance but will help resolve GuC related issues.
145
146          Recommended for driver developers only.
147
148          If in doubt, say "N".
149
150config DRM_I915_SELFTEST
151	bool "Enable selftests upon driver load"
152	depends on DRM_I915
153	default n
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"