LXR linux/drivers/gpu/drm/i915/i915

   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
  31struct drm_printer;
  32
  33#define ENABLE_GUC_SUBMISSION           BIT(0)
  34#define ENABLE_GUC_LOAD_HUC             BIT(1)
  35#define ENABLE_GUC_MASK                 GENMASK(1, 0)
  36
  37/*
  38 * Invoke param, a function-like macro, for each i915 param, with arguments:
  39 *
  40 * param(type, name, value, mode)
  41 *
  42 * type: parameter type, one of {bool, int, unsigned int, unsigned long, char *}
  43 * name: name of the parameter
  44 * value: initial/default value of the parameter
  45 * mode: debugfs file permissions, one of {0400, 0600, 0}, use 0 to not create
  46 *       debugfs file
  47 */
  48#define I915_PARAMS_FOR_EACH(param) \
  49        param(char *, vbt_firmware, NULL, 0400) \
  50        param(int, modeset, -1, 0400) \
  51        param(int, lvds_channel_mode, 0, 0400) \
  52        param(int, panel_use_ssc, -1, 0600) \
  53        param(int, vbt_sdvo_panel_type, -1, 0400) \
  54        param(int, enable_dc, -1, 0400) \
  55        param(int, enable_fbc, -1, 0600) \
  56        param(int, enable_psr, -1, 0600) \
  57        param(bool, psr_safest_params, false, 0400) \
  58        param(bool, enable_psr2_sel_fetch, false, 0400) \
  59        param(int, disable_power_well, -1, 0400) \
  60        param(int, enable_ips, 1, 0600) \
  61        param(int, invert_brightness, 0, 0600) \
  62        param(int, enable_guc, -1, 0400) \
  63        param(int, guc_log_level, -1, 0400) \
  64        param(char *, guc_firmware_path, NULL, 0400) \
  65        param(char *, huc_firmware_path, NULL, 0400) \
  66        param(char *, dmc_firmware_path, NULL, 0400) \
  67        param(int, mmio_debug, -IS_ENABLED(CONFIG_DRM_I915_DEBUG_MMIO), 0600) \
  68        param(int, edp_vswing, 0, 0400) \
  69        param(unsigned int, reset, 3, 0600) \
  70        param(unsigned int, inject_probe_failure, 0, 0) \
  71        param(int, fastboot, -1, 0600) \
  72        param(int, enable_dpcd_backlight, -1, 0600) \
  73        param(char *, force_probe, CONFIG_DRM_I915_FORCE_PROBE, 0400) \
  74        param(unsigned long, fake_lmem_start, 0, IS_ENABLED(CONFIG_DRM_I915_UNSTABLE_FAKE_LMEM) ? 0400 : 0) \
  75        param(unsigned int, request_timeout_ms, CONFIG_DRM_I915_REQUEST_TIMEOUT, CONFIG_DRM_I915_REQUEST_TIMEOUT ? 0600 : 0) \
  76        /* leave bools at the end to not create holes */ \
  77        param(bool, enable_hangcheck, true, 0600) \
  78        param(bool, load_detect_test, false, 0600) \
  79        param(bool, force_reset_modeset_test, false, 0600) \
  80        param(bool, error_capture, true, IS_ENABLED(CONFIG_DRM_I915_CAPTURE_ERROR) ? 0600 : 0) \
  81        param(bool, disable_display, false, 0400) \
  82        param(bool, verbose_state_checks, true, 0) \
  83        param(bool, nuclear_pageflip, false, 0400) \
  84        param(bool, enable_dp_mst, true, 0600) \
  85        param(bool, enable_gvt, false, IS_ENABLED(CONFIG_DRM_I915_GVT) ? 0400 : 0)
  86
  87#define MEMBER(T, member, ...) T member;
  88struct i915_params {
  89        I915_PARAMS_FOR_EACH(MEMBER);
  90};
  91#undef MEMBER
  92
  93extern struct i915_params i915_modparams __read_mostly;
  94
  95void i915_params_dump(const struct i915_params *params, struct drm_printer *p);
  96void i915_params_copy(struct i915_params *dest, const struct i915_params *src);
  97void i915_params_free(struct i915_params *params);
  98
  99#endif
 100