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5060 | serge | 1 | /* |
2 | * Copyright © 2014 Intel Corporation |
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3 | * |
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4 | * Permission is hereby granted, free of charge, to any person obtaining a |
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5 | * copy of this software and associated documentation files (the |
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6 | * "Software"), to deal in the Software without restriction, including |
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7 | * without limitation the rights to use, copy, modify, merge, publish, |
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8 | * distribute, sub license, and/or sell copies of the Software, and to |
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9 | * permit persons to whom the Software is furnished to do so, subject to |
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10 | * the following conditions: |
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11 | * |
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12 | * The above copyright notice and this permission notice (including the |
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13 | * next paragraph) shall be included in all copies or substantial portions |
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14 | * of the Software. |
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15 | * |
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16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
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19 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
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21 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS |
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22 | * IN THE SOFTWARE. |
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23 | */ |
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24 | |||
7144 | serge | 25 | #include "i915_params.h" |
5060 | serge | 26 | #include "i915_drv.h" |
27 | |||
28 | struct i915_params i915 __read_mostly = { |
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29 | .modeset = 1, |
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30 | .panel_ignore_lid = 1, |
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31 | .semaphores = -1, |
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32 | .lvds_channel_mode = 0, |
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33 | .panel_use_ssc = -1, |
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34 | .vbt_sdvo_panel_type = -1, |
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6937 | serge | 35 | .enable_rc6 = 0, |
36 | .enable_dc = -1, |
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5060 | serge | 37 | .enable_fbc = -1, |
6084 | serge | 38 | .enable_execlists = -1, |
7144 | serge | 39 | .enable_hangcheck = false, |
6084 | serge | 40 | .enable_ppgtt = -1, |
5060 | serge | 41 | .enable_psr = 0, |
42 | .preliminary_hw_support = IS_ENABLED(CONFIG_DRM_I915_PRELIMINARY_HW_SUPPORT), |
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6084 | serge | 43 | .disable_power_well = -1, |
5060 | serge | 44 | .enable_ips = 1, |
6283 | serge | 45 | .fastboot = 0, |
5060 | serge | 46 | .prefault_disable = 0, |
6084 | serge | 47 | .load_detect_test = 0, |
5060 | serge | 48 | .reset = true, |
49 | .invert_brightness = 0, |
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50 | .disable_display = 0, |
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51 | .enable_cmd_parser = 0, |
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52 | .use_mmio_flip = 0, |
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53 | .mmio_debug = 0, |
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6084 | serge | 54 | .verbose_state_checks = 1, |
55 | .nuclear_pageflip = 0, |
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56 | .edp_vswing = 0, |
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57 | .enable_guc_submission = false, |
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58 | .guc_log_level = -1, |
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6088 | serge | 59 | .log_file = NULL, |
60 | .cmdline_mode = NULL, |
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5060 | serge | 61 | }; |
62 | |||
63 | module_param_named(modeset, i915.modeset, int, 0400); |
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64 | MODULE_PARM_DESC(modeset, |
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6084 | serge | 65 | "Use kernel modesetting [KMS] (0=disable, " |
5060 | serge | 66 | "1=on, -1=force vga console preference [default])"); |
67 | |||
6084 | serge | 68 | module_param_named_unsafe(panel_ignore_lid, i915.panel_ignore_lid, int, 0600); |
5060 | serge | 69 | MODULE_PARM_DESC(panel_ignore_lid, |
70 | "Override lid status (0=autodetect, 1=autodetect disabled [default], " |
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71 | "-1=force lid closed, -2=force lid open)"); |
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72 | |||
5354 | serge | 73 | module_param_named_unsafe(semaphores, i915.semaphores, int, 0400); |
5060 | serge | 74 | MODULE_PARM_DESC(semaphores, |
75 | "Use semaphores for inter-ring sync " |
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76 | "(default: -1 (use per-chip defaults))"); |
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77 | |||
5354 | serge | 78 | module_param_named_unsafe(enable_rc6, i915.enable_rc6, int, 0400); |
5060 | serge | 79 | MODULE_PARM_DESC(enable_rc6, |
80 | "Enable power-saving render C-state 6. " |
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81 | "Different stages can be selected via bitmask values " |
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82 | "(0 = disable; 1 = enable rc6; 2 = enable deep rc6; 4 = enable deepest rc6). " |
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83 | "For example, 3 would enable rc6 and deep rc6, and 7 would enable everything. " |
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84 | "default: -1 (use per-chip default)"); |
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85 | |||
6937 | serge | 86 | module_param_named_unsafe(enable_dc, i915.enable_dc, int, 0400); |
87 | MODULE_PARM_DESC(enable_dc, |
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88 | "Enable power-saving display C-states. " |
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89 | "(-1=auto [default]; 0=disable; 1=up to DC5; 2=up to DC6)"); |
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90 | |||
5354 | serge | 91 | module_param_named_unsafe(enable_fbc, i915.enable_fbc, int, 0600); |
5060 | serge | 92 | MODULE_PARM_DESC(enable_fbc, |
93 | "Enable frame buffer compression for power savings " |
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94 | "(default: -1 (use per-chip default))"); |
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95 | |||
7144 | serge | 96 | module_param_named_unsafe(lvds_channel_mode, i915.lvds_channel_mode, int, 0400); |
5060 | serge | 97 | MODULE_PARM_DESC(lvds_channel_mode, |
98 | "Specify LVDS channel mode " |
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99 | "(0=probe BIOS [default], 1=single-channel, 2=dual-channel)"); |
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100 | |||
6084 | serge | 101 | module_param_named_unsafe(lvds_use_ssc, i915.panel_use_ssc, int, 0600); |
5060 | serge | 102 | MODULE_PARM_DESC(lvds_use_ssc, |
103 | "Use Spread Spectrum Clock with panels [LVDS/eDP] " |
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104 | "(default: auto from VBT)"); |
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105 | |||
7144 | serge | 106 | module_param_named_unsafe(vbt_sdvo_panel_type, i915.vbt_sdvo_panel_type, int, 0400); |
5060 | serge | 107 | MODULE_PARM_DESC(vbt_sdvo_panel_type, |
108 | "Override/Ignore selection of SDVO panel mode in the VBT " |
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109 | "(-2=ignore, -1=auto [default], index in VBT BIOS table)"); |
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110 | |||
6084 | serge | 111 | module_param_named_unsafe(reset, i915.reset, bool, 0600); |
5060 | serge | 112 | MODULE_PARM_DESC(reset, "Attempt GPU resets (default: true)"); |
113 | |||
6084 | serge | 114 | module_param_named_unsafe(enable_hangcheck, i915.enable_hangcheck, bool, 0644); |
5060 | serge | 115 | MODULE_PARM_DESC(enable_hangcheck, |
116 | "Periodically check GPU activity for detecting hangs. " |
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117 | "WARNING: Disabling this can cause system wide hangs. " |
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118 | "(default: true)"); |
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119 | |||
5354 | serge | 120 | module_param_named_unsafe(enable_ppgtt, i915.enable_ppgtt, int, 0400); |
5060 | serge | 121 | MODULE_PARM_DESC(enable_ppgtt, |
122 | "Override PPGTT usage. " |
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6937 | serge | 123 | "(-1=auto [default], 0=disabled, 1=aliasing, 2=full, 3=full with extended address space)"); |
5060 | serge | 124 | |
6084 | serge | 125 | module_param_named_unsafe(enable_execlists, i915.enable_execlists, int, 0400); |
5354 | serge | 126 | MODULE_PARM_DESC(enable_execlists, |
127 | "Override execlists usage. " |
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6084 | serge | 128 | "(-1=auto [default], 0=disabled, 1=enabled)"); |
5354 | serge | 129 | |
6084 | serge | 130 | module_param_named_unsafe(enable_psr, i915.enable_psr, int, 0600); |
7144 | serge | 131 | MODULE_PARM_DESC(enable_psr, "Enable PSR " |
132 | "(0=disabled, 1=enabled - link mode chosen per-platform, 2=force link-standby mode, 3=force link-off mode) " |
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133 | "Default: -1 (use per-chip default)"); |
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5060 | serge | 134 | |
7144 | serge | 135 | module_param_named_unsafe(preliminary_hw_support, i915.preliminary_hw_support, int, 0400); |
5060 | serge | 136 | MODULE_PARM_DESC(preliminary_hw_support, |
137 | "Enable preliminary hardware support."); |
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138 | |||
6937 | serge | 139 | module_param_named_unsafe(disable_power_well, i915.disable_power_well, int, 0400); |
5060 | serge | 140 | MODULE_PARM_DESC(disable_power_well, |
6084 | serge | 141 | "Disable display power wells when possible " |
142 | "(-1=auto [default], 0=power wells always on, 1=power wells disabled when possible)"); |
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5060 | serge | 143 | |
6084 | serge | 144 | module_param_named_unsafe(enable_ips, i915.enable_ips, int, 0600); |
5060 | serge | 145 | MODULE_PARM_DESC(enable_ips, "Enable IPS (default: true)"); |
146 | |||
147 | module_param_named(fastboot, i915.fastboot, bool, 0600); |
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148 | MODULE_PARM_DESC(fastboot, |
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149 | "Try to skip unnecessary mode sets at boot time (default: false)"); |
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150 | |||
6084 | serge | 151 | module_param_named_unsafe(prefault_disable, i915.prefault_disable, bool, 0600); |
5060 | serge | 152 | MODULE_PARM_DESC(prefault_disable, |
153 | "Disable page prefaulting for pread/pwrite/reloc (default:false). " |
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154 | "For developers only."); |
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155 | |||
6084 | serge | 156 | module_param_named_unsafe(load_detect_test, i915.load_detect_test, bool, 0600); |
157 | MODULE_PARM_DESC(load_detect_test, |
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158 | "Force-enable the VGA load detect code for testing (default:false). " |
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159 | "For developers only."); |
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160 | |||
161 | module_param_named_unsafe(invert_brightness, i915.invert_brightness, int, 0600); |
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5060 | serge | 162 | MODULE_PARM_DESC(invert_brightness, |
163 | "Invert backlight brightness " |
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164 | "(-1 force normal, 0 machine defaults, 1 force inversion), please " |
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165 | "report PCI device ID, subsystem vendor and subsystem device ID " |
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166 | "to dri-devel@lists.freedesktop.org, if your machine needs it. " |
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167 | "It will then be included in an upcoming module version."); |
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168 | |||
7144 | serge | 169 | module_param_named(disable_display, i915.disable_display, bool, 0400); |
5060 | serge | 170 | MODULE_PARM_DESC(disable_display, "Disable display (default: false)"); |
171 | |||
6084 | serge | 172 | module_param_named_unsafe(enable_cmd_parser, i915.enable_cmd_parser, int, 0600); |
5060 | serge | 173 | MODULE_PARM_DESC(enable_cmd_parser, |
174 | "Enable command parsing (1=enabled [default], 0=disabled)"); |
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175 | |||
6084 | serge | 176 | module_param_named_unsafe(use_mmio_flip, i915.use_mmio_flip, int, 0600); |
5060 | serge | 177 | MODULE_PARM_DESC(use_mmio_flip, |
178 | "use MMIO flips (-1=never, 0=driver discretion [default], 1=always)"); |
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179 | |||
6084 | serge | 180 | module_param_named(mmio_debug, i915.mmio_debug, int, 0600); |
5060 | serge | 181 | MODULE_PARM_DESC(mmio_debug, |
6084 | serge | 182 | "Enable the MMIO debug code for the first N failures (default: off). " |
183 | "This may negatively affect performance."); |
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184 | |||
185 | module_param_named(verbose_state_checks, i915.verbose_state_checks, bool, 0600); |
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186 | MODULE_PARM_DESC(verbose_state_checks, |
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187 | "Enable verbose logs (ie. WARN_ON()) in case of unexpected hw state conditions."); |
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188 | |||
189 | module_param_named_unsafe(nuclear_pageflip, i915.nuclear_pageflip, bool, 0600); |
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190 | MODULE_PARM_DESC(nuclear_pageflip, |
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191 | "Force atomic modeset functionality; asynchronous mode is not yet supported. (default: false)."); |
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192 | |||
193 | /* WA to get away with the default setting in VBT for early platforms.Will be removed */ |
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194 | module_param_named_unsafe(edp_vswing, i915.edp_vswing, int, 0400); |
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195 | MODULE_PARM_DESC(edp_vswing, |
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196 | "Ignore/Override vswing pre-emph table selection from VBT " |
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197 | "(0=use value from vbt [default], 1=low power swing(200mV)," |
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198 | "2=default swing(400mV))"); |
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199 | |||
200 | module_param_named_unsafe(enable_guc_submission, i915.enable_guc_submission, bool, 0400); |
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201 | MODULE_PARM_DESC(enable_guc_submission, "Enable GuC submission (default:false)"); |
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202 | |||
203 | module_param_named(guc_log_level, i915.guc_log_level, int, 0400); |
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204 | MODULE_PARM_DESC(guc_log_level, |
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205 | "GuC firmware logging level (-1:disabled (default), 0-3:enabled)"); |