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/*
* Copyright © 2014 Intel Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*/
#include "i915_params.h"
#include "i915_drv.h"
#define i915_param_named(name, T, perm, desc) \
module_param_named(name, i915_modparams.name, T, perm); \
MODULE_PARM_DESC(name, desc)
#define i915_param_named_unsafe(name, T, perm, desc) \
module_param_named_unsafe(name, i915_modparams.name, T, perm); \
MODULE_PARM_DESC(name, desc)
struct i915_params i915_modparams __read_mostly = {
#define MEMBER(T, member, value) .member = (value),
I915_PARAMS_FOR_EACH(MEMBER)
#undef MEMBER
};
i915_param_named(modeset, int, 0400,
"Use kernel modesetting [KMS] (0=disable, "
"1=on, -1=force vga console preference [default])");
i915_param_named_unsafe(panel_ignore_lid, int, 0600,
"Override lid status (0=autodetect, 1=autodetect disabled [default], "
"-1=force lid closed, -2=force lid open)");
i915_param_named_unsafe(semaphores, int, 0400,
"Use semaphores for inter-ring sync "
"(default: -1 (use per-chip defaults))");
i915_param_named_unsafe(enable_rc6, int, 0400,
"Enable power-saving render C-state 6. "
"Different stages can be selected via bitmask values "
"(0 = disable; 1 = enable rc6; 2 = enable deep rc6; 4 = enable deepest rc6). "
"For example, 3 would enable rc6 and deep rc6, and 7 would enable everything. "
"default: -1 (use per-chip default)");
i915_param_named_unsafe(enable_dc, int, 0400,
"Enable power-saving display C-states. "
"(-1=auto [default]; 0=disable; 1=up to DC5; 2=up to DC6)");
i915_param_named_unsafe(enable_fbc, int, 0600,
"Enable frame buffer compression for power savings "
"(default: -1 (use per-chip default))");
i915_param_named_unsafe(lvds_channel_mode, int, 0400,
"Specify LVDS channel mode "
"(0=probe BIOS [default], 1=single-channel, 2=dual-channel)");
i915_param_named_unsafe(panel_use_ssc, int, 0600,
"Use Spread Spectrum Clock with panels [LVDS/eDP] "
"(default: auto from VBT)");
i915_param_named_unsafe(vbt_sdvo_panel_type, int, 0400,
"Override/Ignore selection of SDVO panel mode in the VBT "
"(-2=ignore, -1=auto [default], index in VBT BIOS table)");
i915_param_named_unsafe(reset, int, 0600,
"Attempt GPU resets (0=disabled, 1=full gpu reset, 2=engine reset [default])");
i915_param_named_unsafe(vbt_firmware, charp, 0400,
"Load VBT from specified file under /lib/firmware");
#if IS_ENABLED(CONFIG_DRM_I915_CAPTURE_ERROR)
i915_param_named(error_capture, bool, 0600,
"Record the GPU state following a hang. "
"This information in /sys/class/drm/card<N>/error is vital for "
"triaging and debugging hangs.");
#endif
i915_param_named_unsafe(enable_hangcheck, bool, 0644,
"Periodically check GPU activity for detecting hangs. "
"WARNING: Disabling this can cause system wide hangs. "
"(default: true)");
i915_param_named_unsafe(enable_ppgtt, int, 0400,
"Override PPGTT usage. "
"(-1=auto [default], 0=disabled, 1=aliasing, 2=full, 3=full with extended address space)");
i915_param_named_unsafe(enable_execlists, int, 0400,
"Override execlists usage. "
"(-1=auto [default], 0=disabled, 1=enabled)");
i915_param_named_unsafe(enable_psr, int, 0600,
"Enable PSR "
"(0=disabled, 1=enabled - link mode chosen per-platform, 2=force link-standby mode, 3=force link-off mode) "
"Default: -1 (use per-chip default)");
i915_param_named_unsafe(alpha_support, bool, 0400,
"Enable alpha quality driver support for latest hardware. "
"See also CONFIG_DRM_I915_ALPHA_SUPPORT.");
i915_param_named_unsafe(disable_power_well, int, 0400,
"Disable display power wells when possible "
"(-1=auto [default], 0=power wells always on, 1=power wells disabled when possible)");
i915_param_named_unsafe(enable_ips, int, 0600, "Enable IPS (default: true)");
i915_param_named(fastboot, bool, 0600,
"Try to skip unnecessary mode sets at boot time (default: false)");
i915_param_named_unsafe(prefault_disable, bool, 0600,
"Disable page prefaulting for pread/pwrite/reloc (default:false). "
"For developers only.");
i915_param_named_unsafe(load_detect_test, bool, 0600,
"Force-enable the VGA load detect code for testing (default:false). "
"For developers only.");
i915_param_named_unsafe(force_reset_modeset_test, bool, 0600,
"Force a modeset during gpu reset for testing (default:false). "
"For developers only.");
i915_param_named_unsafe(invert_brightness, int, 0600,
"Invert backlight brightness "
"(-1 force normal, 0 machine defaults, 1 force inversion), please "
"report PCI device ID, subsystem vendor and subsystem device ID "
"to dri-devel@lists.freedesktop.org, if your machine needs it. "
"It will then be included in an upcoming module version.");
i915_param_named(disable_display, bool, 0400,
"Disable display (default: false)");
i915_param_named_unsafe(enable_cmd_parser, bool, 0400,
"Enable command parsing (true=enabled [default], false=disabled)");
i915_param_named(mmio_debug, int, 0600,
"Enable the MMIO debug code for the first N failures (default: off). "
"This may negatively affect performance.");
i915_param_named(verbose_state_checks, bool, 0600,
"Enable verbose logs (ie. WARN_ON()) in case of unexpected hw state conditions.");
i915_param_named_unsafe(nuclear_pageflip, bool, 0400,
"Force enable atomic functionality on platforms that don't have full support yet.");
/* WA to get away with the default setting in VBT for early platforms.Will be removed */
i915_param_named_unsafe(edp_vswing, int, 0400,
"Ignore/Override vswing pre-emph table selection from VBT "
"(0=use value from vbt [default], 1=low power swing(200mV),"
"2=default swing(400mV))");
i915_param_named_unsafe(enable_guc_loading, int, 0400,
"Enable GuC firmware loading "
"(-1=auto, 0=never [default], 1=if available, 2=required)");
i915_param_named_unsafe(enable_guc_submission, int, 0400,
"Enable GuC submission "
"(-1=auto, 0=never [default], 1=if available, 2=required)");
i915_param_named(guc_log_level, int, 0400,
"GuC firmware logging level (-1:disabled (default), 0-3:enabled)");
i915_param_named_unsafe(guc_firmware_path, charp, 0400,
"GuC firmware path to use instead of the default one");
i915_param_named_unsafe(huc_firmware_path, charp, 0400,
"HuC firmware path to use instead of the default one");
i915_param_named_unsafe(enable_dp_mst, bool, 0600,
"Enable multi-stream transport (MST) for new DisplayPort sinks. (default: true)");
i915_param_named_unsafe(inject_load_failure, uint, 0400,
"Force an error after a number of failure check points (0:disabled (default), N:force failure at the Nth failure check point)");
i915_param_named(enable_dpcd_backlight, bool, 0600,
"Enable support for DPCD backlight control (default:false)");
i915_param_named(enable_gvt, bool, 0400,
"Enable support for Intel GVT-g graphics virtualization host support(default:false)");
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