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