diff options
Diffstat (limited to 'drivers/gpu/drm/i915/i915_params.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_params.c | 206 |
1 files changed, 206 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_params.c b/drivers/gpu/drm/i915/i915_params.c new file mode 100644 index 000000000..295e981e4 --- /dev/null +++ b/drivers/gpu/drm/i915/i915_params.c @@ -0,0 +1,206 @@ +/* + * 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 <drm/drm_print.h> + +#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(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_psr, int, 0600, + "Enable PSR " + "(0=disabled, 1=enabled) " + "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(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, int, 0400, + "Enable GuC load for GuC submission and/or HuC load. " + "Required functionality can be selected using bitmask values. " + "(-1=auto, 0=disable [default], 1=GuC submission, 2=HuC load)"); + +i915_param_named(guc_log_level, int, 0400, + "GuC firmware logging level. Requires GuC to be loaded. " + "(-1=auto [default], 0=disable, 1..4=enable with verbosity min..max)"); + +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(dmc_firmware_path, charp, 0400, + "DMC 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)"); + +#if IS_ENABLED(CONFIG_DRM_I915_DEBUG) +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)"); +#endif + +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)"); + +static __always_inline void _print_param(struct drm_printer *p, + const char *name, + const char *type, + const void *x) +{ + if (!__builtin_strcmp(type, "bool")) + drm_printf(p, "i915.%s=%s\n", name, yesno(*(const bool *)x)); + else if (!__builtin_strcmp(type, "int")) + drm_printf(p, "i915.%s=%d\n", name, *(const int *)x); + else if (!__builtin_strcmp(type, "unsigned int")) + drm_printf(p, "i915.%s=%u\n", name, *(const unsigned int *)x); + else if (!__builtin_strcmp(type, "char *")) + drm_printf(p, "i915.%s=%s\n", name, *(const char **)x); + else + BUILD_BUG(); +} + +/** + * i915_params_dump - dump i915 modparams + * @params: i915 modparams + * @p: the &drm_printer + * + * Pretty printer for i915 modparams. + */ +void i915_params_dump(const struct i915_params *params, struct drm_printer *p) +{ +#define PRINT(T, x, ...) _print_param(p, #x, #T, ¶ms->x); + I915_PARAMS_FOR_EACH(PRINT); +#undef PRINT +} |