1 /* $NetBSD: i915_params.h,v 1.2 2021/12/18 23:45:28 riastradh Exp $ */ 2 3 /* 4 * Copyright © 2015 Intel Corporation 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a 7 * copy of this software and associated documentation files (the "Software"), 8 * to deal in the Software without restriction, including without limitation 9 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 10 * and/or sell copies of the Software, and to permit persons to whom the 11 * Software is furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice (including the next 14 * paragraph) shall be included in all copies or substantial portions of the 15 * Software. 16 * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 22 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS 23 * IN THE SOFTWARE. 24 * 25 */ 26 27 #ifndef _I915_PARAMS_H_ 28 #define _I915_PARAMS_H_ 29 30 #include <linux/bitops.h> 31 #include <linux/cache.h> /* for __read_mostly */ 32 33 struct drm_printer; 34 35 #define ENABLE_GUC_SUBMISSION BIT(0) 36 #define ENABLE_GUC_LOAD_HUC BIT(1) 37 38 /* 39 * Invoke param, a function-like macro, for each i915 param, with arguments: 40 * 41 * param(type, name, value) 42 * 43 * type: parameter type, one of {bool, int, unsigned int, char *} 44 * name: name of the parameter 45 * value: initial/default value of the parameter 46 */ 47 #define I915_PARAMS_FOR_EACH(param) \ 48 param(char *, vbt_firmware, NULL) \ 49 param(int, modeset, -1) \ 50 param(int, lvds_channel_mode, 0) \ 51 param(int, panel_use_ssc, -1) \ 52 param(int, vbt_sdvo_panel_type, -1) \ 53 param(int, enable_dc, -1) \ 54 param(int, enable_fbc, -1) \ 55 param(int, enable_psr, -1) \ 56 param(int, disable_power_well, -1) \ 57 param(int, enable_ips, 1) \ 58 param(int, invert_brightness, 0) \ 59 param(int, enable_guc, 0) \ 60 param(int, guc_log_level, -1) \ 61 param(char *, guc_firmware_path, NULL) \ 62 param(char *, huc_firmware_path, NULL) \ 63 param(char *, dmc_firmware_path, NULL) \ 64 param(int, mmio_debug, -IS_ENABLED(CONFIG_DRM_I915_DEBUG_MMIO)) \ 65 param(int, edp_vswing, 0) \ 66 param(int, reset, 3) \ 67 param(unsigned int, inject_probe_failure, 0) \ 68 param(int, fastboot, -1) \ 69 param(int, enable_dpcd_backlight, 0) \ 70 param(char *, force_probe, CONFIG_DRM_I915_FORCE_PROBE) \ 71 param(unsigned long, fake_lmem_start, 0) \ 72 /* leave bools at the end to not create holes */ \ 73 param(bool, alpha_support, IS_ENABLED(CONFIG_DRM_I915_ALPHA_SUPPORT)) \ 74 param(bool, enable_hangcheck, true) \ 75 param(bool, prefault_disable, false) \ 76 param(bool, load_detect_test, false) \ 77 param(bool, force_reset_modeset_test, false) \ 78 param(bool, error_capture, true) \ 79 param(bool, disable_display, false) \ 80 param(bool, verbose_state_checks, true) \ 81 param(bool, nuclear_pageflip, false) \ 82 param(bool, enable_dp_mst, true) \ 83 param(bool, enable_gvt, false) 84 85 #define MEMBER(T, member, ...) T member; 86 struct i915_params { 87 I915_PARAMS_FOR_EACH(MEMBER); 88 }; 89 #undef MEMBER 90 91 extern struct i915_params i915_modparams __read_mostly; 92 93 void i915_params_dump(const struct i915_params *params, struct drm_printer *p); 94 void i915_params_copy(struct i915_params *dest, const struct i915_params *src); 95 void i915_params_free(struct i915_params *params); 96 97 #endif 98 99