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(int, modeset, -1, 0400) \
50 param(int, enable_guc, -1, 0400) \
51 param(int, guc_log_level, -1, 0400) \
52 param(char *, guc_firmware_path, NULL, 0400) \
53 param(char *, huc_firmware_path, NULL, 0400) \
54 param(char *, gsc_firmware_path, NULL, 0400) \
55 param(bool, memtest, false, 0400) \
56 param(int, mmio_debug, -IS_ENABLED(CONFIG_DRM_I915_DEBUG_MMIO), 0600) \
57 param(unsigned int, reset, 3, 0600) \
58 param(unsigned int, inject_probe_failure, 0, 0) \
59 param(char *, force_probe, CONFIG_DRM_I915_FORCE_PROBE, 0400) \
60 param(unsigned int, request_timeout_ms, CONFIG_DRM_I915_REQUEST_TIMEOUT, CONFIG_DRM_I915_REQUEST_TIMEOUT ? 0600 : 0) \
61 param(unsigned int, lmem_size, 0, 0400) \
62 param(unsigned int, lmem_bar_size, 0, 0400) \
63 /* leave bools at the end to not create holes */ \
64 param(bool, enable_hangcheck, true, 0600) \
65 param(bool, error_capture, true, IS_ENABLED(CONFIG_DRM_I915_CAPTURE_ERROR) ? 0600 : 0) \
66 param(bool, enable_gvt, false, IS_ENABLED(CONFIG_DRM_I915_GVT) ? 0400 : 0) \
67 param(bool, enable_debug_only_api, false, IS_ENABLED(CONFIG_DRM_I915_REPLAY_GPU_HANGS_API) ? 0400 : 0)
68
69#define MEMBER(T, member, ...) T member;
70struct i915_params {
71 I915_PARAMS_FOR_EACH(MEMBER);
72};
73#undef MEMBER
74
75extern struct i915_params i915_modparams __read_mostly;
76
77void i915_params_dump(const struct i915_params *params, struct drm_printer *p);
78void i915_params_copy(struct i915_params *dest, const struct i915_params *src);
79void i915_params_free(struct i915_params *params);
80
81#endif
82

source code of linux/drivers/gpu/drm/i915/i915_params.h