/* * 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 #include #include "i915_params.h" #include "i915_drv.h" 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 }; /* * 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) i915_param_named(error_capture, bool, 0400, "Record the GPU state following a hang. " "This information in /sys/class/drm/card/error is vital for " "triaging and debugging hangs."); #endif 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)"); 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."); 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"); i915_param_named_unsafe(huc_firmware_path, charp, 0400, "HuC firmware path to use instead of the default one"); 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)"); #endif #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 }