forked from Minki/linux
ab3595bc4f
Sometimes it would be most enlightening to debug systems by replacing the VBT to be used. For example, in the referenced bug the BIOS provides different VBT depending on the boot mode (UEFI vs. legacy). It would be interesting to try the failing boot mode with the VBT from the working boot, and see if that makes a difference. Add a module parameter to load the VBT using the firmware loader, not unlike the EDID firmware mechanism. As a starting point for experimenting, one can pick up the BIOS provided VBT from /sys/kernel/debug/dri/0/i915_opregion/i915_vbt. v2: clarify firmware load return value check (Bob) v3: kfree the loaded firmware blob References: https://bugs.freedesktop.org/show_bug.cgi?id=97822#c83 Reviewed-by: Bob Paauwe <bob.j.paauwe@intel.com> Acked-by: Daniel Vetter <daniel@ffwll.ch> Signed-off-by: Jani Nikula <jani.nikula@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20170817115209.25912-1-jani.nikula@intel.com
260 lines
11 KiB
C
260 lines
11 KiB
C
/*
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* Copyright © 2014 Intel Corporation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sub license, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*/
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#include "i915_params.h"
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#include "i915_drv.h"
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struct i915_params i915 __read_mostly = {
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.modeset = -1,
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.panel_ignore_lid = 1,
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.semaphores = -1,
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.lvds_channel_mode = 0,
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.panel_use_ssc = -1,
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.vbt_sdvo_panel_type = -1,
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.enable_rc6 = -1,
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.enable_dc = -1,
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.enable_fbc = -1,
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.enable_execlists = -1,
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.enable_hangcheck = true,
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.enable_ppgtt = -1,
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.enable_psr = -1,
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.alpha_support = IS_ENABLED(CONFIG_DRM_I915_ALPHA_SUPPORT),
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.disable_power_well = -1,
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.enable_ips = 1,
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.fastboot = 0,
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.prefault_disable = 0,
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.load_detect_test = 0,
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.force_reset_modeset_test = 0,
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.reset = 2,
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.error_capture = true,
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.invert_brightness = 0,
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.disable_display = 0,
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.enable_cmd_parser = true,
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.use_mmio_flip = 0,
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.mmio_debug = 0,
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.verbose_state_checks = 1,
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.nuclear_pageflip = 0,
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.edp_vswing = 0,
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.enable_guc_loading = 0,
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.enable_guc_submission = 0,
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.guc_log_level = -1,
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.guc_firmware_path = NULL,
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.huc_firmware_path = NULL,
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.enable_dp_mst = true,
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.inject_load_failure = 0,
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.enable_dpcd_backlight = false,
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.enable_gvt = false,
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};
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module_param_named(modeset, i915.modeset, int, 0400);
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MODULE_PARM_DESC(modeset,
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"Use kernel modesetting [KMS] (0=disable, "
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"1=on, -1=force vga console preference [default])");
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module_param_named_unsafe(panel_ignore_lid, i915.panel_ignore_lid, int, 0600);
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MODULE_PARM_DESC(panel_ignore_lid,
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"Override lid status (0=autodetect, 1=autodetect disabled [default], "
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"-1=force lid closed, -2=force lid open)");
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module_param_named_unsafe(semaphores, i915.semaphores, int, 0400);
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MODULE_PARM_DESC(semaphores,
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"Use semaphores for inter-ring sync "
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"(default: -1 (use per-chip defaults))");
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module_param_named_unsafe(enable_rc6, i915.enable_rc6, int, 0400);
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MODULE_PARM_DESC(enable_rc6,
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"Enable power-saving render C-state 6. "
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"Different stages can be selected via bitmask values "
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"(0 = disable; 1 = enable rc6; 2 = enable deep rc6; 4 = enable deepest rc6). "
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"For example, 3 would enable rc6 and deep rc6, and 7 would enable everything. "
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"default: -1 (use per-chip default)");
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module_param_named_unsafe(enable_dc, i915.enable_dc, int, 0400);
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MODULE_PARM_DESC(enable_dc,
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"Enable power-saving display C-states. "
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"(-1=auto [default]; 0=disable; 1=up to DC5; 2=up to DC6)");
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module_param_named_unsafe(enable_fbc, i915.enable_fbc, int, 0600);
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MODULE_PARM_DESC(enable_fbc,
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"Enable frame buffer compression for power savings "
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"(default: -1 (use per-chip default))");
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module_param_named_unsafe(lvds_channel_mode, i915.lvds_channel_mode, int, 0400);
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MODULE_PARM_DESC(lvds_channel_mode,
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"Specify LVDS channel mode "
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"(0=probe BIOS [default], 1=single-channel, 2=dual-channel)");
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module_param_named_unsafe(lvds_use_ssc, i915.panel_use_ssc, int, 0600);
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MODULE_PARM_DESC(lvds_use_ssc,
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"Use Spread Spectrum Clock with panels [LVDS/eDP] "
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"(default: auto from VBT)");
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module_param_named_unsafe(vbt_sdvo_panel_type, i915.vbt_sdvo_panel_type, int, 0400);
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MODULE_PARM_DESC(vbt_sdvo_panel_type,
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"Override/Ignore selection of SDVO panel mode in the VBT "
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"(-2=ignore, -1=auto [default], index in VBT BIOS table)");
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module_param_named_unsafe(reset, i915.reset, int, 0600);
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MODULE_PARM_DESC(reset, "Attempt GPU resets (0=disabled, 1=full gpu reset, 2=engine reset [default])");
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module_param_named_unsafe(vbt_firmware, i915.vbt_firmware, charp, 0400);
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MODULE_PARM_DESC(vbt_firmware,
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"Load VBT from specified file under /lib/firmware");
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#if IS_ENABLED(CONFIG_DRM_I915_CAPTURE_ERROR)
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module_param_named(error_capture, i915.error_capture, bool, 0600);
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MODULE_PARM_DESC(error_capture,
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"Record the GPU state following a hang. "
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"This information in /sys/class/drm/card<N>/error is vital for "
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"triaging and debugging hangs.");
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#endif
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module_param_named_unsafe(enable_hangcheck, i915.enable_hangcheck, bool, 0644);
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MODULE_PARM_DESC(enable_hangcheck,
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"Periodically check GPU activity for detecting hangs. "
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"WARNING: Disabling this can cause system wide hangs. "
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"(default: true)");
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module_param_named_unsafe(enable_ppgtt, i915.enable_ppgtt, int, 0400);
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MODULE_PARM_DESC(enable_ppgtt,
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"Override PPGTT usage. "
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"(-1=auto [default], 0=disabled, 1=aliasing, 2=full, 3=full with extended address space)");
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module_param_named_unsafe(enable_execlists, i915.enable_execlists, int, 0400);
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MODULE_PARM_DESC(enable_execlists,
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"Override execlists usage. "
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"(-1=auto [default], 0=disabled, 1=enabled)");
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module_param_named_unsafe(enable_psr, i915.enable_psr, int, 0600);
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MODULE_PARM_DESC(enable_psr, "Enable PSR "
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"(0=disabled, 1=enabled - link mode chosen per-platform, 2=force link-standby mode, 3=force link-off mode) "
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"Default: -1 (use per-chip default)");
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module_param_named_unsafe(alpha_support, i915.alpha_support, bool, 0400);
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MODULE_PARM_DESC(alpha_support,
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"Enable alpha quality driver support for latest hardware. "
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"See also CONFIG_DRM_I915_ALPHA_SUPPORT.");
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module_param_named_unsafe(disable_power_well, i915.disable_power_well, int, 0400);
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MODULE_PARM_DESC(disable_power_well,
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"Disable display power wells when possible "
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"(-1=auto [default], 0=power wells always on, 1=power wells disabled when possible)");
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module_param_named_unsafe(enable_ips, i915.enable_ips, int, 0600);
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MODULE_PARM_DESC(enable_ips, "Enable IPS (default: true)");
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module_param_named(fastboot, i915.fastboot, bool, 0600);
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MODULE_PARM_DESC(fastboot,
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"Try to skip unnecessary mode sets at boot time (default: false)");
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module_param_named_unsafe(prefault_disable, i915.prefault_disable, bool, 0600);
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MODULE_PARM_DESC(prefault_disable,
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"Disable page prefaulting for pread/pwrite/reloc (default:false). "
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"For developers only.");
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module_param_named_unsafe(load_detect_test, i915.load_detect_test, bool, 0600);
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MODULE_PARM_DESC(load_detect_test,
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"Force-enable the VGA load detect code for testing (default:false). "
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"For developers only.");
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module_param_named_unsafe(force_reset_modeset_test, i915.force_reset_modeset_test, bool, 0600);
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MODULE_PARM_DESC(force_reset_modeset_test,
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"Force a modeset during gpu reset for testing (default:false). "
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"For developers only.");
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module_param_named_unsafe(invert_brightness, i915.invert_brightness, int, 0600);
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MODULE_PARM_DESC(invert_brightness,
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"Invert backlight brightness "
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"(-1 force normal, 0 machine defaults, 1 force inversion), please "
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"report PCI device ID, subsystem vendor and subsystem device ID "
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"to dri-devel@lists.freedesktop.org, if your machine needs it. "
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"It will then be included in an upcoming module version.");
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module_param_named(disable_display, i915.disable_display, bool, 0400);
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MODULE_PARM_DESC(disable_display, "Disable display (default: false)");
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module_param_named_unsafe(enable_cmd_parser, i915.enable_cmd_parser, bool, 0400);
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MODULE_PARM_DESC(enable_cmd_parser,
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"Enable command parsing (true=enabled [default], false=disabled)");
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module_param_named_unsafe(use_mmio_flip, i915.use_mmio_flip, int, 0600);
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MODULE_PARM_DESC(use_mmio_flip,
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"use MMIO flips (-1=never, 0=driver discretion [default], 1=always)");
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module_param_named(mmio_debug, i915.mmio_debug, int, 0600);
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MODULE_PARM_DESC(mmio_debug,
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"Enable the MMIO debug code for the first N failures (default: off). "
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"This may negatively affect performance.");
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module_param_named(verbose_state_checks, i915.verbose_state_checks, bool, 0600);
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MODULE_PARM_DESC(verbose_state_checks,
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"Enable verbose logs (ie. WARN_ON()) in case of unexpected hw state conditions.");
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module_param_named_unsafe(nuclear_pageflip, i915.nuclear_pageflip, bool, 0400);
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MODULE_PARM_DESC(nuclear_pageflip,
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"Force enable atomic functionality on platforms that don't have full support yet.");
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/* WA to get away with the default setting in VBT for early platforms.Will be removed */
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module_param_named_unsafe(edp_vswing, i915.edp_vswing, int, 0400);
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MODULE_PARM_DESC(edp_vswing,
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"Ignore/Override vswing pre-emph table selection from VBT "
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"(0=use value from vbt [default], 1=low power swing(200mV),"
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"2=default swing(400mV))");
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module_param_named_unsafe(enable_guc_loading, i915.enable_guc_loading, int, 0400);
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MODULE_PARM_DESC(enable_guc_loading,
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"Enable GuC firmware loading "
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"(-1=auto, 0=never [default], 1=if available, 2=required)");
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module_param_named_unsafe(enable_guc_submission, i915.enable_guc_submission, int, 0400);
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MODULE_PARM_DESC(enable_guc_submission,
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"Enable GuC submission "
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"(-1=auto, 0=never [default], 1=if available, 2=required)");
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module_param_named(guc_log_level, i915.guc_log_level, int, 0400);
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MODULE_PARM_DESC(guc_log_level,
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"GuC firmware logging level (-1:disabled (default), 0-3:enabled)");
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module_param_named_unsafe(guc_firmware_path, i915.guc_firmware_path, charp, 0400);
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MODULE_PARM_DESC(guc_firmware_path,
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"GuC firmware path to use instead of the default one");
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module_param_named_unsafe(huc_firmware_path, i915.huc_firmware_path, charp, 0400);
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MODULE_PARM_DESC(huc_firmware_path,
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"HuC firmware path to use instead of the default one");
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module_param_named_unsafe(enable_dp_mst, i915.enable_dp_mst, bool, 0600);
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MODULE_PARM_DESC(enable_dp_mst,
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"Enable multi-stream transport (MST) for new DisplayPort sinks. (default: true)");
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module_param_named_unsafe(inject_load_failure, i915.inject_load_failure, uint, 0400);
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MODULE_PARM_DESC(inject_load_failure,
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"Force an error after a number of failure check points (0:disabled (default), N:force failure at the Nth failure check point)");
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module_param_named(enable_dpcd_backlight, i915.enable_dpcd_backlight, bool, 0600);
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MODULE_PARM_DESC(enable_dpcd_backlight,
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"Enable support for DPCD backlight control (default:false)");
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module_param_named(enable_gvt, i915.enable_gvt, bool, 0400);
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MODULE_PARM_DESC(enable_gvt,
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"Enable support for Intel GVT-g graphics virtualization host support(default:false)");
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