diff options
Diffstat (limited to 'drivers/gpu/drm/i915/i915_params.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_params.c | 384 |
1 files changed, 179 insertions, 205 deletions
diff --git a/drivers/gpu/drm/i915/i915_params.c b/drivers/gpu/drm/i915/i915_params.c index b6a7e363d076..37746dd619fd 100644 --- a/drivers/gpu/drm/i915/i915_params.c +++ b/drivers/gpu/drm/i915/i915_params.c @@ -22,234 +22,208 @@ * IN THE SOFTWARE. */ +#include <linux/string_helpers.h> + +#include <drm/drm_print.h> + #include "i915_params.h" #include "i915_drv.h" -struct i915_params i915 __read_mostly = { - .modeset = -1, - .panel_ignore_lid = 1, - .semaphores = -1, - .lvds_channel_mode = 0, - .panel_use_ssc = -1, - .vbt_sdvo_panel_type = -1, - .enable_rc6 = -1, - .enable_dc = -1, - .enable_fbc = -1, - .enable_execlists = -1, - .enable_hangcheck = true, - .enable_ppgtt = -1, - .enable_psr = -1, - .alpha_support = IS_ENABLED(CONFIG_DRM_I915_ALPHA_SUPPORT), - .disable_power_well = -1, - .enable_ips = 1, - .fastboot = 0, - .prefault_disable = 0, - .load_detect_test = 0, - .force_reset_modeset_test = 0, - .reset = true, - .error_capture = true, - .invert_brightness = 0, - .disable_display = 0, - .enable_cmd_parser = true, - .use_mmio_flip = 0, - .mmio_debug = 0, - .verbose_state_checks = 1, - .nuclear_pageflip = 0, - .edp_vswing = 0, - .enable_guc_loading = 0, - .enable_guc_submission = 0, - .guc_log_level = -1, - .guc_firmware_path = NULL, - .huc_firmware_path = NULL, - .enable_dp_mst = true, - .inject_load_failure = 0, - .enable_dpcd_backlight = false, - .enable_gvt = false, +DECLARE_DYNDBG_CLASSMAP(drm_debug_classes, DD_CLASS_TYPE_DISJOINT_BITS, 0, + "DRM_UT_CORE", + "DRM_UT_DRIVER", + "DRM_UT_KMS", + "DRM_UT_PRIME", + "DRM_UT_ATOMIC", + "DRM_UT_VBL", + "DRM_UT_STATE", + "DRM_UT_LEASE", + "DRM_UT_DP", + "DRM_UT_DRMRES"); + +#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 }; -module_param_named(modeset, i915.modeset, int, 0400); -MODULE_PARM_DESC(modeset, - "Use kernel modesetting [KMS] (0=disable, " - "1=on, -1=force vga console preference [default])"); - -module_param_named_unsafe(panel_ignore_lid, i915.panel_ignore_lid, int, 0600); -MODULE_PARM_DESC(panel_ignore_lid, - "Override lid status (0=autodetect, 1=autodetect disabled [default], " - "-1=force lid closed, -2=force lid open)"); - -module_param_named_unsafe(semaphores, i915.semaphores, int, 0400); -MODULE_PARM_DESC(semaphores, - "Use semaphores for inter-ring sync " - "(default: -1 (use per-chip defaults))"); - -module_param_named_unsafe(enable_rc6, i915.enable_rc6, int, 0400); -MODULE_PARM_DESC(enable_rc6, - "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)"); - -module_param_named_unsafe(enable_dc, i915.enable_dc, int, 0400); -MODULE_PARM_DESC(enable_dc, - "Enable power-saving display C-states. " - "(-1=auto [default]; 0=disable; 1=up to DC5; 2=up to DC6)"); - -module_param_named_unsafe(enable_fbc, i915.enable_fbc, int, 0600); -MODULE_PARM_DESC(enable_fbc, - "Enable frame buffer compression for power savings " - "(default: -1 (use per-chip default))"); - -module_param_named_unsafe(lvds_channel_mode, i915.lvds_channel_mode, int, 0400); -MODULE_PARM_DESC(lvds_channel_mode, - "Specify LVDS channel mode " - "(0=probe BIOS [default], 1=single-channel, 2=dual-channel)"); - -module_param_named_unsafe(lvds_use_ssc, i915.panel_use_ssc, int, 0600); -MODULE_PARM_DESC(lvds_use_ssc, - "Use Spread Spectrum Clock with panels [LVDS/eDP] " - "(default: auto from VBT)"); - -module_param_named_unsafe(vbt_sdvo_panel_type, i915.vbt_sdvo_panel_type, int, 0400); -MODULE_PARM_DESC(vbt_sdvo_panel_type, - "Override/Ignore selection of SDVO panel mode in the VBT " - "(-2=ignore, -1=auto [default], index in VBT BIOS table)"); - -module_param_named_unsafe(reset, i915.reset, bool, 0600); -MODULE_PARM_DESC(reset, "Attempt GPU resets (default: true)"); +/* + * Note: As a rule, keep module parameter sysfs permissions read-only + * 0400. Runtime changes are only supported through i915 debugfs. + * + * For any exceptions requiring write access and runtime changes through module + * parameter sysfs, prevent debugfs file creation by setting the parameter's + * debugfs mode to 0. + */ + +i915_param_named(modeset, int, 0400, + "Deprecated. Use the 'nomodeset' kernel parameter instead."); + +i915_param_named_unsafe(reset, uint, 0400, + "Attempt GPU resets (0=disabled, 1=full gpu reset, 2=engine reset [default])"); #if IS_ENABLED(CONFIG_DRM_I915_CAPTURE_ERROR) -module_param_named(error_capture, i915.error_capture, bool, 0600); -MODULE_PARM_DESC(error_capture, +i915_param_named(error_capture, bool, 0400, "Record the GPU state following a hang. " "This information in /sys/class/drm/card<N>/error is vital for " "triaging and debugging hangs."); #endif -module_param_named_unsafe(enable_hangcheck, i915.enable_hangcheck, bool, 0644); -MODULE_PARM_DESC(enable_hangcheck, +i915_param_named_unsafe(enable_hangcheck, bool, 0400, "Periodically check GPU activity for detecting hangs. " "WARNING: Disabling this can cause system wide hangs. " "(default: true)"); -module_param_named_unsafe(enable_ppgtt, i915.enable_ppgtt, int, 0400); -MODULE_PARM_DESC(enable_ppgtt, - "Override PPGTT usage. " - "(-1=auto [default], 0=disabled, 1=aliasing, 2=full, 3=full with extended address space)"); - -module_param_named_unsafe(enable_execlists, i915.enable_execlists, int, 0400); -MODULE_PARM_DESC(enable_execlists, - "Override execlists usage. " - "(-1=auto [default], 0=disabled, 1=enabled)"); - -module_param_named_unsafe(enable_psr, i915.enable_psr, int, 0600); -MODULE_PARM_DESC(enable_psr, "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)"); - -module_param_named_unsafe(alpha_support, i915.alpha_support, bool, 0400); -MODULE_PARM_DESC(alpha_support, - "Enable alpha quality driver support for latest hardware. " - "See also CONFIG_DRM_I915_ALPHA_SUPPORT."); - -module_param_named_unsafe(disable_power_well, i915.disable_power_well, int, 0400); -MODULE_PARM_DESC(disable_power_well, - "Disable display power wells when possible " - "(-1=auto [default], 0=power wells always on, 1=power wells disabled when possible)"); - -module_param_named_unsafe(enable_ips, i915.enable_ips, int, 0600); -MODULE_PARM_DESC(enable_ips, "Enable IPS (default: true)"); - -module_param_named(fastboot, i915.fastboot, bool, 0600); -MODULE_PARM_DESC(fastboot, - "Try to skip unnecessary mode sets at boot time (default: false)"); - -module_param_named_unsafe(prefault_disable, i915.prefault_disable, bool, 0600); -MODULE_PARM_DESC(prefault_disable, - "Disable page prefaulting for pread/pwrite/reloc (default:false). " - "For developers only."); - -module_param_named_unsafe(load_detect_test, i915.load_detect_test, bool, 0600); -MODULE_PARM_DESC(load_detect_test, - "Force-enable the VGA load detect code for testing (default:false). " - "For developers only."); - -module_param_named_unsafe(force_reset_modeset_test, i915.force_reset_modeset_test, bool, 0600); -MODULE_PARM_DESC(force_reset_modeset_test, - "Force a modeset during gpu reset for testing (default:false). " - "For developers only."); - -module_param_named_unsafe(invert_brightness, i915.invert_brightness, int, 0600); -MODULE_PARM_DESC(invert_brightness, - "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."); - -module_param_named(disable_display, i915.disable_display, bool, 0400); -MODULE_PARM_DESC(disable_display, "Disable display (default: false)"); - -module_param_named_unsafe(enable_cmd_parser, i915.enable_cmd_parser, bool, 0400); -MODULE_PARM_DESC(enable_cmd_parser, - "Enable command parsing (true=enabled [default], false=disabled)"); - -module_param_named_unsafe(use_mmio_flip, i915.use_mmio_flip, int, 0600); -MODULE_PARM_DESC(use_mmio_flip, - "use MMIO flips (-1=never, 0=driver discretion [default], 1=always)"); - -module_param_named(mmio_debug, i915.mmio_debug, int, 0600); -MODULE_PARM_DESC(mmio_debug, +i915_param_named_unsafe(force_probe, charp, 0400, + "Force probe options for specified supported devices. " + "See CONFIG_DRM_I915_FORCE_PROBE for details."); + +i915_param_named(memtest, bool, 0400, + "Perform a read/write test of all device memory on module load (default: off)"); + +i915_param_named(mmio_debug, int, 0400, "Enable the MMIO debug code for the first N failures (default: off). " "This may negatively affect performance."); -module_param_named(verbose_state_checks, i915.verbose_state_checks, bool, 0600); -MODULE_PARM_DESC(verbose_state_checks, - "Enable verbose logs (ie. WARN_ON()) in case of unexpected hw state conditions."); - -module_param_named_unsafe(nuclear_pageflip, i915.nuclear_pageflip, bool, 0400); -MODULE_PARM_DESC(nuclear_pageflip, - "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 */ -module_param_named_unsafe(edp_vswing, i915.edp_vswing, int, 0400); -MODULE_PARM_DESC(edp_vswing, - "Ignore/Override vswing pre-emph table selection from VBT " - "(0=use value from vbt [default], 1=low power swing(200mV)," - "2=default swing(400mV))"); - -module_param_named_unsafe(enable_guc_loading, i915.enable_guc_loading, int, 0400); -MODULE_PARM_DESC(enable_guc_loading, - "Enable GuC firmware loading " - "(-1=auto, 0=never [default], 1=if available, 2=required)"); - -module_param_named_unsafe(enable_guc_submission, i915.enable_guc_submission, int, 0400); -MODULE_PARM_DESC(enable_guc_submission, - "Enable GuC submission " - "(-1=auto, 0=never [default], 1=if available, 2=required)"); - -module_param_named(guc_log_level, i915.guc_log_level, int, 0400); -MODULE_PARM_DESC(guc_log_level, - "GuC firmware logging level (-1:disabled (default), 0-3:enabled)"); - -module_param_named_unsafe(guc_firmware_path, i915.guc_firmware_path, charp, 0400); -MODULE_PARM_DESC(guc_firmware_path, +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 [default], 0=disable, 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"); -module_param_named_unsafe(huc_firmware_path, i915.huc_firmware_path, charp, 0400); -MODULE_PARM_DESC(huc_firmware_path, +i915_param_named_unsafe(huc_firmware_path, charp, 0400, "HuC firmware path to use instead of the default one"); -module_param_named_unsafe(enable_dp_mst, i915.enable_dp_mst, bool, 0600); -MODULE_PARM_DESC(enable_dp_mst, - "Enable multi-stream transport (MST) for new DisplayPort sinks. (default: true)"); -module_param_named_unsafe(inject_load_failure, i915.inject_load_failure, uint, 0400); -MODULE_PARM_DESC(inject_load_failure, +i915_param_named_unsafe(gsc_firmware_path, charp, 0400, + "GSC firmware path to use instead of the default one"); + +#if IS_ENABLED(CONFIG_DRM_I915_DEBUG) +i915_param_named_unsafe(inject_probe_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)"); -module_param_named(enable_dpcd_backlight, i915.enable_dpcd_backlight, bool, 0600); -MODULE_PARM_DESC(enable_dpcd_backlight, - "Enable support for DPCD backlight control (default:false)"); +#endif -module_param_named(enable_gvt, i915.enable_gvt, bool, 0400); -MODULE_PARM_DESC(enable_gvt, +#if IS_ENABLED(CONFIG_DRM_I915_GVT) +i915_param_named(enable_gvt, bool, 0400, "Enable support for Intel GVT-g graphics virtualization host support(default:false)"); +#endif + +#if CONFIG_DRM_I915_REQUEST_TIMEOUT +i915_param_named_unsafe(request_timeout_ms, uint, 0600, + "Default request/fence/batch buffer expiration timeout."); +#endif + +i915_param_named_unsafe(lmem_size, uint, 0400, + "Set the lmem size(in MiB) for each region. (default: 0, all memory)"); +i915_param_named_unsafe(lmem_bar_size, uint, 0400, + "Set the lmem bar size(in MiB)."); + +#if IS_ENABLED(CONFIG_DRM_I915_REPLAY_GPU_HANGS_API) +i915_param_named(enable_debug_only_api, bool, 0400, + "Enable support for unstable debug only userspace API. (default:false)"); +#endif + +static void _param_print_bool(struct drm_printer *p, const char *name, + bool val) +{ + drm_printf(p, "i915.%s=%s\n", name, str_yes_no(val)); +} + +static void _param_print_int(struct drm_printer *p, const char *name, + int val) +{ + drm_printf(p, "i915.%s=%d\n", name, val); +} + +static void _param_print_uint(struct drm_printer *p, const char *name, + unsigned int val) +{ + drm_printf(p, "i915.%s=%u\n", name, val); +} + +static void _param_print_ulong(struct drm_printer *p, const char *name, + unsigned long val) +{ + drm_printf(p, "i915.%s=%lu\n", name, val); +} + +static void _param_print_charp(struct drm_printer *p, const char *name, + const char *val) +{ + drm_printf(p, "i915.%s=%s\n", name, val); +} + +#define _param_print(p, name, val) \ + _Generic(val, \ + bool: _param_print_bool, \ + int: _param_print_int, \ + unsigned int: _param_print_uint, \ + unsigned long: _param_print_ulong, \ + char *: _param_print_charp)(p, name, val) + +/** + * 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, ...) _param_print(p, #x, params->x); + I915_PARAMS_FOR_EACH(PRINT); +#undef PRINT +} + +static void _param_dup_charp(char **valp) +{ + *valp = kstrdup(*valp, GFP_ATOMIC); +} + +static void _param_nop(void *valp) +{ +} + +#define _param_dup(valp) \ + _Generic(valp, \ + char **: _param_dup_charp, \ + default: _param_nop)(valp) + +void i915_params_copy(struct i915_params *dest, const struct i915_params *src) +{ + *dest = *src; +#define DUP(T, x, ...) _param_dup(&dest->x); + I915_PARAMS_FOR_EACH(DUP); +#undef DUP +} + +static void _param_free_charp(char **valp) +{ + kfree(*valp); + *valp = NULL; +} + +#define _param_free(valp) \ + _Generic(valp, \ + char **: _param_free_charp, \ + default: _param_nop)(valp) + +/* free the allocated members, *not* the passed in params itself */ +void i915_params_free(struct i915_params *params) +{ +#define FREE(T, x, ...) _param_free(¶ms->x); + I915_PARAMS_FOR_EACH(FREE); +#undef FREE +} |