1 /* 2 * Copyright © 2015 Intel Corporation 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice (including the next 12 * paragraph) shall be included in all copies or substantial portions of the 13 * Software. 14 * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS 21 * IN THE SOFTWARE. 22 * 23 */ 24 25 #ifndef _I915_PARAMS_H_ 26 #define _I915_PARAMS_H_ 27 28 #include <linux/bitops.h> 29 #include <linux/cache.h> /* for __read_mostly */ 30 31 struct drm_printer; 32 33 #define ENABLE_GUC_SUBMISSION BIT(0) 34 #define ENABLE_GUC_LOAD_HUC BIT(1) 35 36 /* 37 * Invoke param, a function-like macro, for each i915 param, with arguments: 38 * 39 * param(type, name, value, mode) 40 * 41 * type: parameter type, one of {bool, int, unsigned int, unsigned long, char *} 42 * name: name of the parameter 43 * value: initial/default value of the parameter 44 * mode: debugfs file permissions, one of {0400, 0600, 0}, use 0 to not create 45 * debugfs file 46 */ 47 #define I915_PARAMS_FOR_EACH(param) \ 48 param(char *, vbt_firmware, NULL, 0400) \ 49 param(int, modeset, -1, 0400) \ 50 param(int, lvds_channel_mode, 0, 0400) \ 51 param(int, panel_use_ssc, -1, 0600) \ 52 param(int, vbt_sdvo_panel_type, -1, 0400) \ 53 param(int, enable_dc, -1, 0400) \ 54 param(int, enable_fbc, -1, 0600) \ 55 param(int, enable_psr, -1, 0600) \ 56 param(bool, psr_safest_params, false, 0600) \ 57 param(int, disable_power_well, -1, 0400) \ 58 param(int, enable_ips, 1, 0600) \ 59 param(int, invert_brightness, 0, 0600) \ 60 param(int, enable_guc, 0, 0400) \ 61 param(int, guc_log_level, -1, 0400) \ 62 param(char *, guc_firmware_path, NULL, 0400) \ 63 param(char *, huc_firmware_path, NULL, 0400) \ 64 param(char *, dmc_firmware_path, NULL, 0400) \ 65 param(int, mmio_debug, -IS_ENABLED(CONFIG_DRM_I915_DEBUG_MMIO), 0600) \ 66 param(int, edp_vswing, 0, 0400) \ 67 param(unsigned int, reset, 3, 0600) \ 68 param(unsigned int, inject_probe_failure, 0, 0) \ 69 param(int, fastboot, -1, 0600) \ 70 param(int, enable_dpcd_backlight, -1, 0600) \ 71 param(char *, force_probe, CONFIG_DRM_I915_FORCE_PROBE, 0400) \ 72 param(unsigned long, fake_lmem_start, 0, 0400) \ 73 /* leave bools at the end to not create holes */ \ 74 param(bool, enable_hangcheck, true, 0600) \ 75 param(bool, load_detect_test, false, 0600) \ 76 param(bool, force_reset_modeset_test, false, 0600) \ 77 param(bool, error_capture, true, 0600) \ 78 param(bool, disable_display, false, 0400) \ 79 param(bool, verbose_state_checks, true, 0) \ 80 param(bool, nuclear_pageflip, false, 0400) \ 81 param(bool, enable_dp_mst, true, 0600) \ 82 param(bool, enable_gvt, false, 0400) 83 84 #define MEMBER(T, member, ...) T member; 85 struct i915_params { 86 I915_PARAMS_FOR_EACH(MEMBER); 87 }; 88 #undef MEMBER 89 90 extern struct i915_params i915_modparams __read_mostly; 91 92 void i915_params_dump(const struct i915_params *params, struct drm_printer *p); 93 void i915_params_copy(struct i915_params *dest, const struct i915_params *src); 94 void i915_params_free(struct i915_params *params); 95 96 #endif 97 98