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      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