Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1// SPDX-License-Identifier: MIT
2/*
3 * Copyright © 2021 Intel Corporation
4 */
5
6#include "xe_module.h"
7
8#include <linux/init.h>
9#include <linux/module.h>
10
11#include <drm/drm_module.h>
12
13#include "xe_defaults.h"
14#include "xe_device_types.h"
15#include "xe_drv.h"
16#include "xe_configfs.h"
17#include "xe_hw_fence.h"
18#include "xe_pci.h"
19#include "xe_pm.h"
20#include "xe_observation.h"
21#include "xe_sched_job.h"
22
23struct xe_modparam xe_modparam = {
24 .probe_display = XE_DEFAULT_PROBE_DISPLAY,
25 .guc_log_level = XE_DEFAULT_GUC_LOG_LEVEL,
26 .force_probe = XE_DEFAULT_FORCE_PROBE,
27#ifdef CONFIG_PCI_IOV
28 .max_vfs = XE_DEFAULT_MAX_VFS,
29#endif
30 .wedged_mode = XE_DEFAULT_WEDGED_MODE,
31 .svm_notifier_size = XE_DEFAULT_SVM_NOTIFIER_SIZE,
32 /* the rest are 0 by default */
33};
34
35module_param_named(svm_notifier_size, xe_modparam.svm_notifier_size, uint, 0600);
36MODULE_PARM_DESC(svm_notifier_size, "Set the svm notifier size in MiB, must be power of 2 "
37 "[default=" __stringify(XE_DEFAULT_SVM_NOTIFIER_SIZE) "]");
38
39module_param_named_unsafe(force_execlist, xe_modparam.force_execlist, bool, 0444);
40MODULE_PARM_DESC(force_execlist, "Force Execlist submission");
41
42#if IS_ENABLED(CONFIG_DRM_XE_DISPLAY)
43module_param_named(probe_display, xe_modparam.probe_display, bool, 0444);
44MODULE_PARM_DESC(probe_display, "Probe display HW, otherwise it's left untouched "
45 "[default=" __stringify(XE_DEFAULT_PROBE_DISPLAY) "])");
46#endif
47
48module_param_named(vram_bar_size, xe_modparam.force_vram_bar_size, int, 0600);
49MODULE_PARM_DESC(vram_bar_size, "Set the vram bar size in MiB (<0=disable-resize, 0=max-needed-size, >0=force-size "
50 "[default=" __stringify(XE_DEFAULT_VRAM_BAR_SIZE) "])");
51
52module_param_named(guc_log_level, xe_modparam.guc_log_level, int, 0600);
53MODULE_PARM_DESC(guc_log_level, "GuC firmware logging level (0=disable, 1=normal, 2..5=verbose-levels "
54 "[default=" __stringify(XE_DEFAULT_GUC_LOG_LEVEL) "])");
55
56module_param_named_unsafe(guc_firmware_path, xe_modparam.guc_firmware_path, charp, 0400);
57MODULE_PARM_DESC(guc_firmware_path,
58 "GuC firmware path to use instead of the default one");
59
60module_param_named_unsafe(huc_firmware_path, xe_modparam.huc_firmware_path, charp, 0400);
61MODULE_PARM_DESC(huc_firmware_path,
62 "HuC firmware path to use instead of the default one - empty string disables");
63
64module_param_named_unsafe(gsc_firmware_path, xe_modparam.gsc_firmware_path, charp, 0400);
65MODULE_PARM_DESC(gsc_firmware_path,
66 "GSC firmware path to use instead of the default one - empty string disables");
67
68module_param_named_unsafe(force_probe, xe_modparam.force_probe, charp, 0400);
69MODULE_PARM_DESC(force_probe,
70 "Force probe options for specified devices. See CONFIG_DRM_XE_FORCE_PROBE for details "
71 "[default=" XE_DEFAULT_FORCE_PROBE "])");
72
73#ifdef CONFIG_PCI_IOV
74module_param_named(max_vfs, xe_modparam.max_vfs, uint, 0400);
75MODULE_PARM_DESC(max_vfs,
76 "Limit number of Virtual Functions (VFs) that could be managed. "
77 "(0=no VFs; N=allow up to N VFs "
78 "[default=" XE_DEFAULT_MAX_VFS_STR "])");
79#endif
80
81module_param_named_unsafe(wedged_mode, xe_modparam.wedged_mode, uint, 0600);
82MODULE_PARM_DESC(wedged_mode,
83 "Module's default policy for the wedged mode (0=never, 1=upon-critical-error, 2=upon-any-hang-no-reset "
84 "[default=" XE_DEFAULT_WEDGED_MODE_STR "])");
85
86static int xe_check_nomodeset(void)
87{
88 if (drm_firmware_drivers_only())
89 return -ENODEV;
90
91 return 0;
92}
93
94struct init_funcs {
95 int (*init)(void);
96 void (*exit)(void);
97};
98
99static const struct init_funcs init_funcs[] = {
100 {
101 .init = xe_check_nomodeset,
102 },
103 {
104 .init = xe_configfs_init,
105 .exit = xe_configfs_exit,
106 },
107 {
108 .init = xe_hw_fence_module_init,
109 .exit = xe_hw_fence_module_exit,
110 },
111 {
112 .init = xe_sched_job_module_init,
113 .exit = xe_sched_job_module_exit,
114 },
115 {
116 .init = xe_register_pci_driver,
117 .exit = xe_unregister_pci_driver,
118 },
119 {
120 .init = xe_observation_sysctl_register,
121 .exit = xe_observation_sysctl_unregister,
122 },
123 {
124 .init = xe_pm_module_init,
125 },
126};
127
128static int __init xe_call_init_func(const struct init_funcs *func)
129{
130 if (func->init)
131 return func->init();
132 return 0;
133}
134
135static void xe_call_exit_func(const struct init_funcs *func)
136{
137 if (func->exit)
138 func->exit();
139}
140
141static int __init xe_init(void)
142{
143 int err, i;
144
145 for (i = 0; i < ARRAY_SIZE(init_funcs); i++) {
146 err = xe_call_init_func(init_funcs + i);
147 if (err) {
148 pr_info("%s: module_init aborted at %ps %pe\n",
149 DRIVER_NAME, init_funcs[i].init, ERR_PTR(err));
150 while (i--)
151 xe_call_exit_func(init_funcs + i);
152 return err;
153 }
154 }
155
156 return 0;
157}
158
159static void __exit xe_exit(void)
160{
161 int i;
162
163 for (i = ARRAY_SIZE(init_funcs) - 1; i >= 0; i--)
164 xe_call_exit_func(init_funcs + i);
165}
166
167module_init(xe_init);
168module_exit(xe_exit);
169
170MODULE_AUTHOR("Intel Corporation");
171
172MODULE_DESCRIPTION(DRIVER_DESC);
173MODULE_LICENSE("GPL and additional rights");