1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
|
/*
* Copyright © 2014 Intel Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*/
#include <drm/drm_print.h>
#include "i915_params.h"
#include "i915_drv.h"
#define i915_param_named(name, T, perm, desc) \
module_param_named(name, i915_modparams.name, T, perm); \
MODULE_PARM_DESC(name, desc)
#define i915_param_named_unsafe(name, T, perm, desc) \
module_param_named_unsafe(name, i915_modparams.name, T, perm); \
MODULE_PARM_DESC(name, desc)
struct i915_params i915_modparams __read_mostly = {
#define MEMBER(T, member, value) .member = (value),
I915_PARAMS_FOR_EACH(MEMBER)
#undef MEMBER
};
i915_param_named(modeset, int, 0400,
"Use kernel modesetting [KMS] (0=disable, "
"1=on, -1=force vga console preference [default])");
i915_param_named_unsafe(panel_ignore_lid, int, 0600,
"Override lid status (0=autodetect, 1=autodetect disabled [default], "
"-1=force lid closed, -2=force lid open)");
i915_param_named_unsafe(enable_dc, int, 0400,
"Enable power-saving display C-states. "
"(-1=auto [default]; 0=disable; 1=up to DC5; 2=up to DC6)");
i915_param_named_unsafe(enable_fbc, int, 0600,
"Enable frame buffer compression for power savings "
"(default: -1 (use per-chip default))");
i915_param_named_unsafe(lvds_channel_mode, int, 0400,
"Specify LVDS channel mode "
"(0=probe BIOS [default], 1=single-channel, 2=dual-channel)");
i915_param_named_unsafe(panel_use_ssc, int, 0600,
"Use Spread Spectrum Clock with panels [LVDS/eDP] "
"(default: auto from VBT)");
i915_param_named_unsafe(vbt_sdvo_panel_type, int, 0400,
"Override/Ignore selection of SDVO panel mode in the VBT "
"(-2=ignore, -1=auto [default], index in VBT BIOS table)");
i915_param_named_unsafe(reset, int, 0600,
"Attempt GPU resets (0=disabled, 1=full gpu reset, 2=engine reset [default])");
i915_param_named_unsafe(vbt_firmware, charp, 0400,
"Load VBT from specified file under /lib/firmware");
#if IS_ENABLED(CONFIG_DRM_I915_CAPTURE_ERROR)
i915_param_named(error_capture, bool, 0600,
"Record the GPU state following a hang. "
"This information in /sys/class/drm/card<N>/error is vital for "
"triaging and debugging hangs.");
#endif
i915_param_named_unsafe(enable_hangcheck, bool, 0644,
"Periodically check GPU activity for detecting hangs. "
"WARNING: Disabling this can cause system wide hangs. "
"(default: true)");
i915_param_named_unsafe(enable_ppgtt, int, 0400,
"Override PPGTT usage. "
"(-1=auto [default], 0=disabled, 1=aliasing, 2=full, 3=full with extended address space)");
i915_param_named_unsafe(enable_psr, int, 0600,
"Enable PSR "
"(0=disabled, 1=enabled - link mode chosen per-platform, 2=force link-standby mode, 3=force link-off mode) "
"Default: -1 (use per-chip default)");
i915_param_named_unsafe(alpha_support, bool, 0400,
"Enable alpha quality driver support for latest hardware. "
"See also CONFIG_DRM_I915_ALPHA_SUPPORT.");
i915_param_named_unsafe(disable_power_well, int, 0400,
"Disable display power wells when possible "
"(-1=auto [default], 0=power wells always on, 1=power wells disabled when possible)");
i915_param_named_unsafe(enable_ips, int, 0600, "Enable IPS (default: true)");
i915_param_named(fastboot, bool, 0600,
"Try to skip unnecessary mode sets at boot time (default: false)");
i915_param_named_unsafe(prefault_disable, bool, 0600,
"Disable page prefaulting for pread/pwrite/reloc (default:false). "
"For developers only.");
i915_param_named_unsafe(load_detect_test, bool, 0600,
"Force-enable the VGA load detect code for testing (default:false). "
"For developers only.");
i915_param_named_unsafe(force_reset_modeset_test, bool, 0600,
"Force a modeset during gpu reset for testing (default:false). "
"For developers only.");
i915_param_named_unsafe(invert_brightness, int, 0600,
"Invert backlight brightness "
"(-1 force normal, 0 machine defaults, 1 force inversion), please "
"report PCI device ID, subsystem vendor and subsystem device ID "
"to dri-devel@lists.freedesktop.org, if your machine needs it. "
"It will then be included in an upcoming module version.");
i915_param_named(disable_display, bool, 0400,
"Disable display (default: false)");
i915_param_named_unsafe(enable_cmd_parser, bool, 0400,
"Enable command parsing (true=enabled [default], false=disabled)");
i915_param_named(mmio_debug, int, 0600,
"Enable the MMIO debug code for the first N failures (default: off). "
"This may negatively affect performance.");
i915_param_named(verbose_state_checks, bool, 0600,
"Enable verbose logs (ie. WARN_ON()) in case of unexpected hw state conditions.");
i915_param_named_unsafe(nuclear_pageflip, bool, 0400,
"Force enable atomic functionality on platforms that don't have full support yet.");
/* WA to get away with the default setting in VBT for early platforms.Will be removed */
i915_param_named_unsafe(edp_vswing, int, 0400,
"Ignore/Override vswing pre-emph table selection from VBT "
"(0=use value from vbt [default], 1=low power swing(200mV),"
"2=default swing(400mV))");
i915_param_named_unsafe(enable_guc, int, 0400,
"Enable GuC load for GuC submission and/or HuC load. "
"Required functionality can be selected using bitmask values. "
"(-1=auto, 0=disable [default], 1=GuC submission, 2=HuC load)");
i915_param_named(guc_log_level, int, 0400,
"GuC firmware logging level. Requires GuC to be loaded. "
"(-1=auto [default], 0=disable, 1..4=enable with verbosity min..max)");
i915_param_named_unsafe(guc_firmware_path, charp, 0400,
"GuC firmware path to use instead of the default one");
i915_param_named_unsafe(huc_firmware_path, charp, 0400,
"HuC firmware path to use instead of the default one");
i915_param_named_unsafe(enable_dp_mst, bool, 0600,
"Enable multi-stream transport (MST) for new DisplayPort sinks. (default: true)");
#if IS_ENABLED(CONFIG_DRM_I915_DEBUG)
i915_param_named_unsafe(inject_load_failure, uint, 0400,
"Force an error after a number of failure check points (0:disabled (default), N:force failure at the Nth failure check point)");
#endif
i915_param_named(enable_dpcd_backlight, bool, 0600,
"Enable support for DPCD backlight control (default:false)");
i915_param_named(enable_gvt, bool, 0400,
"Enable support for Intel GVT-g graphics virtualization host support(default:false)");
static __always_inline void _print_param(struct drm_printer *p,
const char *name,
const char *type,
const void *x)
{
if (!__builtin_strcmp(type, "bool"))
drm_printf(p, "i915.%s=%s\n", name, yesno(*(const bool *)x));
else if (!__builtin_strcmp(type, "int"))
drm_printf(p, "i915.%s=%d\n", name, *(const int *)x);
else if (!__builtin_strcmp(type, "unsigned int"))
drm_printf(p, "i915.%s=%u\n", name, *(const unsigned int *)x);
else if (!__builtin_strcmp(type, "char *"))
drm_printf(p, "i915.%s=%s\n", name, *(const char **)x);
else
BUILD_BUG();
}
/**
* i915_params_dump - dump i915 modparams
* @params: i915 modparams
* @p: the &drm_printer
*
* Pretty printer for i915 modparams.
*/
void i915_params_dump(const struct i915_params *params, struct drm_printer *p)
{
#define PRINT(T, x, ...) _print_param(p, #x, #T, ¶ms->x);
I915_PARAMS_FOR_EACH(PRINT);
#undef PRINT
}
|
