drm/i915/i915_params.h

0001 /*
0002  * Copyright © 2015 Intel Corporation
0003  *
0004  * Permission is hereby granted, free of charge, to any person obtaining a
0005  * copy of this software and associated documentation files (the "Software"),
0006  * to deal in the Software without restriction, including without limitation
0007  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
0008  * and/or sell copies of the Software, and to permit persons to whom the
0009  * Software is furnished to do so, subject to the following conditions:
0010  *
0011  * The above copyright notice and this permission notice (including the next
0012  * paragraph) shall be included in all copies or substantial portions of the
0013  * Software.
0014  *
0015  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
0016  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
0017  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
0018  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
0019  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
0020  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
0021  * IN THE SOFTWARE.
0022  *
0023  */
0024
0025 #ifndef _I915_PARAMS_H_
0026 #define _I915_PARAMS_H_
0027
0028 #include <linux/bitops.h>
0029 #include <linux/cache.h> /* for __read_mostly */
0030
0031 struct drm_printer;
0032
0033 #define ENABLE_GUC_SUBMISSION       BIT(0)
0034 #define ENABLE_GUC_LOAD_HUC     BIT(1)
0035 #define ENABLE_GUC_MASK         GENMASK(1, 0)
0036
0037 /*
0038  * Invoke param, a function-like macro, for each i915 param, with arguments:
0039  *
0040  * param(type, name, value, mode)
0041  *
0042  * type: parameter type, one of {bool, int, unsigned int, unsigned long, char *}
0043  * name: name of the parameter
0044  * value: initial/default value of the parameter
0045  * mode: debugfs file permissions, one of {0400, 0600, 0}, use 0 to not create
0046  *       debugfs file
0047  */
0048 #define I915_PARAMS_FOR_EACH(param) \
0049     param(char *, vbt_firmware, NULL, 0400) \
0050     param(int, modeset, -1, 0400) \
0051     param(int, lvds_channel_mode, 0, 0400) \
0052     param(int, panel_use_ssc, -1, 0600) \
0053     param(int, vbt_sdvo_panel_type, -1, 0400) \
0054     param(int, enable_dc, -1, 0400) \
0055     param(int, enable_fbc, -1, 0600) \
0056     param(int, enable_psr, -1, 0600) \
0057     param(bool, psr_safest_params, false, 0400) \
0058     param(bool, enable_psr2_sel_fetch, true, 0400) \
0059     param(int, disable_power_well, -1, 0400) \
0060     param(int, enable_ips, 1, 0600) \
0061     param(int, invert_brightness, 0, 0600) \
0062     param(int, enable_guc, -1, 0400) \
0063     param(int, guc_log_level, -1, 0400) \
0064     param(char *, guc_firmware_path, NULL, 0400) \
0065     param(char *, huc_firmware_path, NULL, 0400) \
0066     param(char *, dmc_firmware_path, NULL, 0400) \
0067     param(bool, memtest, false, 0400) \
0068     param(int, mmio_debug, -IS_ENABLED(CONFIG_DRM_I915_DEBUG_MMIO), 0600) \
0069     param(int, edp_vswing, 0, 0400) \
0070     param(unsigned int, reset, 3, 0600) \
0071     param(unsigned int, inject_probe_failure, 0, 0) \
0072     param(int, fastboot, -1, 0600) \
0073     param(int, enable_dpcd_backlight, -1, 0600) \
0074     param(char *, force_probe, CONFIG_DRM_I915_FORCE_PROBE, 0400) \
0075     param(unsigned int, request_timeout_ms, CONFIG_DRM_I915_REQUEST_TIMEOUT, CONFIG_DRM_I915_REQUEST_TIMEOUT ? 0600 : 0) \
0076     param(unsigned int, lmem_size, 0, 0400) \
0077     param(unsigned int, lmem_bar_size, 0, 0400) \
0078     /* leave bools at the end to not create holes */ \
0079     param(bool, enable_hangcheck, true, 0600) \
0080     param(bool, load_detect_test, false, 0600) \
0081     param(bool, force_reset_modeset_test, false, 0600) \
0082     param(bool, error_capture, true, IS_ENABLED(CONFIG_DRM_I915_CAPTURE_ERROR) ? 0600 : 0) \
0083     param(bool, disable_display, false, 0400) \
0084     param(bool, verbose_state_checks, true, 0) \
0085     param(bool, nuclear_pageflip, false, 0400) \
0086     param(bool, enable_dp_mst, true, 0600) \
0087     param(bool, enable_gvt, false, IS_ENABLED(CONFIG_DRM_I915_GVT) ? 0400 : 0)
0088
0089 #define MEMBER(T, member, ...) T member;
0090 struct i915_params {
0091     I915_PARAMS_FOR_EACH(MEMBER);
0092 };
0093 #undef MEMBER
0094
0095 extern struct i915_params i915_modparams __read_mostly;
0096
0097 void i915_params_dump(const struct i915_params *params, struct drm_printer *p);
0098 void i915_params_copy(struct i915_params *dest, const struct i915_params *src);
0099 void i915_params_free(struct i915_params *params);
0100
0101 #endif