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1 # SPDX-License-Identifier: GPL-2.0-only

2 config 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.

15 Recommended for driver developers only.

17 If in doubt, say "N".

19 config 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_WERROR

35 select DRM_I915_DEBUG_GEM

36 select DRM_I915_DEBUG_MMIO

37 select DRM_I915_DEBUG_RUNTIME_PM

38 select DRM_I915_SW_FENCE_DEBUG_OBJECTS

39 select DRM_I915_SELFTEST

40 default n

41 help

42 Choose this option to turn on extra driver debugging that may affect

43 performance but will catch some internal issues.

45 Recommended for driver developers only.

47 If in doubt, say "N".

49 config DRM_I915_DEBUG_MMIO

50 bool "Always insert extra checks around mmio access by default"

51 default n

52 help

53 By default, always enables the extra sanity checks (extra register

54 reads) around every mmio (register) access that will slow the system

55 down. This sets the default value of i915.mmio_debug to -1 and can

56 be overridden at module load.

58 Recommended for driver developers only.

60 If in doubt, say "N".

62 config DRM_I915_DEBUG_GEM

63 bool "Insert extra checks into the GEM internals"

64 default n

65 depends on DRM_I915_WERROR

66 help

67 Enable extra sanity checks (including BUGs) along the GEM driver

68 paths that may slow the system down and if hit hang the machine.

70 Recommended for driver developers only.

72 If in doubt, say "N".

74 config DRM_I915_ERRLOG_GEM

75 bool "Insert extra logging (very verbose) for common GEM errors"

76 default n

77 depends on DRM_I915_DEBUG_GEM

78 help

79 Enable additional logging that may help track down the cause of

80 principally userspace errors.

82 Recommended for driver developers only.

84 If in doubt, say "N".

86 config DRM_I915_TRACE_GEM

87 bool "Insert extra ftrace output from the GEM internals"

88 depends on DRM_I915_DEBUG_GEM

89 select TRACING

90 default n

91 help

92 Enable additional and verbose debugging output that will spam

93 ordinary tests, but may be vital for post-mortem debugging when

94 used with /proc/sys/kernel/ftrace_dump_on_oops

96 Recommended for driver developers only.

98 If in doubt, say "N".

100 config DRM_I915_TRACE_GTT

101 bool "Insert extra ftrace output from the GTT internals"

102 depends on DRM_I915_DEBUG_GEM

103 select TRACING

104 default n

105 help

106 Enable additional and verbose debugging output that will spam

107 ordinary tests, but may be vital for post-mortem debugging when

108 used with /proc/sys/kernel/ftrace_dump_on_oops

109

110 Recommended for driver developers only.

111

112 If in doubt, say "N".

113

114 config DRM_I915_SW_FENCE_DEBUG_OBJECTS

115 bool "Enable additional driver debugging for fence objects"

116 depends on DRM_I915

117 select DEBUG_OBJECTS

118 default n

119 help

120 Choose this option to turn on extra driver debugging that may affect

121 performance but will catch some internal issues.

122

123 Recommended for driver developers only.

124

125 If in doubt, say "N".

126

127 config DRM_I915_SW_FENCE_CHECK_DAG

128 bool "Enable additional driver debugging for detecting dependency cycles"

129 depends on DRM_I915

130 default n

131 help

132 Choose this option to turn on extra driver debugging that may affect

133 performance but will catch some internal issues.

134

135 Recommended for driver developers only.

136

137 If in doubt, say "N".

138

139 config DRM_I915_DEBUG_GUC

140 bool "Enable additional driver debugging for GuC"

141 depends on DRM_I915

142 default n

143 help

144 Choose this option to turn on extra driver debugging that may affect

145 performance but will help resolve GuC related issues.

146

147 Recommended for driver developers only.

148

149 If in doubt, say "N".

150

151 config DRM_I915_SELFTEST

152 bool "Enable selftests upon driver load"

153 depends on DRM_I915

154 default n

155 select DRM_EXPORT_FOR_TESTS if m

156 select FAULT_INJECTION

157 select PRIME_NUMBERS

158 select CRC32

159 help

160 Choose this option to allow the driver to perform selftests upon

161 loading; also requires the i915.selftest=1 module parameter. To

162 exit the module after running the selftests (i.e. to prevent normal

163 module initialisation afterwards) use i915.selftest=-1.

164

165 Recommended for driver developers only.

166

167 If in doubt, say "N".

168

169 config DRM_I915_SELFTEST_BROKEN

170 bool "Enable broken and dangerous selftests"

171 depends on DRM_I915_SELFTEST

172 depends on BROKEN

173 default n

174 help

175 This option enables the execution of selftests that are "dangerous"

176 and may trigger unintended HW side-effects as they break strict

177 rules given in the HW specification. For science.

178

179 Recommended for masochistic driver developers only.

180

181 If in doubt, say "N".

182

183 config DRM_I915_LOW_LEVEL_TRACEPOINTS

184 bool "Enable low level request tracing events"

185 depends on DRM_I915

186 default n

187 help

188 Choose this option to turn on low level request tracing events.

189 This provides the ability to precisely monitor engine utilisation

190 and also analyze the request dependency resolving timeline.

191

192 If in doubt, say "N".

193

194 config DRM_I915_DEBUG_VBLANK_EVADE

195 bool "Enable extra debug warnings for vblank evasion"

196 depends on DRM_I915

197 default n

198 help

199 Choose this option to turn on extra debug warnings for the

200 vblank evade mechanism. This gives a warning every time the

201 the deadline allotted for the vblank evade critical section

202 is exceeded, even if there isn't an actual risk of missing

203 the vblank.

204

205 If in doubt, say "N".

206

207 config DRM_I915_DEBUG_RUNTIME_PM

208 bool "Enable extra state checking for runtime PM"

209 depends on DRM_I915

210 default n

211 select STACKDEPOT

212 help

213 Choose this option to turn on extra state checking for the

214 runtime PM functionality. This may introduce overhead during

215 driver loading, suspend and resume operations.

216

217 If in doubt, say "N"