tjh.dev
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_drv.h"
14#include "xe_hw_fence.h"
15#include "xe_pci.h"
16#include "xe_pm.h"
17#include "xe_observation.h"
18#include "xe_sched_job.h"
19
20struct xe_modparam xe_modparam = {
21 .probe_display = true,
22 .guc_log_level = 5,
23 .force_probe = CONFIG_DRM_XE_FORCE_PROBE,
24 .wedged_mode = 1,
25 /* the rest are 0 by default */
26};
27
28module_param_named_unsafe(force_execlist, xe_modparam.force_execlist, bool, 0444);
29MODULE_PARM_DESC(force_execlist, "Force Execlist submission");
30
31module_param_named(probe_display, xe_modparam.probe_display, bool, 0444);
32MODULE_PARM_DESC(probe_display, "Probe display HW, otherwise it's left untouched (default: true)");
33
34module_param_named(vram_bar_size, xe_modparam.force_vram_bar_size, uint, 0600);
35MODULE_PARM_DESC(vram_bar_size, "Set the vram bar size(in MiB)");
36
37module_param_named(guc_log_level, xe_modparam.guc_log_level, int, 0600);
38MODULE_PARM_DESC(guc_log_level, "GuC firmware logging level (0=disable, 1..5=enable with verbosity min..max)");
39
40module_param_named_unsafe(guc_firmware_path, xe_modparam.guc_firmware_path, charp, 0400);
41MODULE_PARM_DESC(guc_firmware_path,
42 "GuC firmware path to use instead of the default one");
43
44module_param_named_unsafe(huc_firmware_path, xe_modparam.huc_firmware_path, charp, 0400);
45MODULE_PARM_DESC(huc_firmware_path,
46 "HuC firmware path to use instead of the default one - empty string disables");
47
48module_param_named_unsafe(gsc_firmware_path, xe_modparam.gsc_firmware_path, charp, 0400);
49MODULE_PARM_DESC(gsc_firmware_path,
50 "GSC firmware path to use instead of the default one - empty string disables");
51
52module_param_named_unsafe(force_probe, xe_modparam.force_probe, charp, 0400);
53MODULE_PARM_DESC(force_probe,
54 "Force probe options for specified devices. See CONFIG_DRM_XE_FORCE_PROBE for details.");
55
56#ifdef CONFIG_PCI_IOV
57module_param_named(max_vfs, xe_modparam.max_vfs, uint, 0400);
58MODULE_PARM_DESC(max_vfs,
59 "Limit number of Virtual Functions (VFs) that could be managed. "
60 "(0 = no VFs [default]; N = allow up to N VFs)");
61#endif
62
63module_param_named_unsafe(wedged_mode, xe_modparam.wedged_mode, int, 0600);
64MODULE_PARM_DESC(wedged_mode,
65 "Module's default policy for the wedged mode - 0=never, 1=upon-critical-errors[default], 2=upon-any-hang");
66
67static int xe_check_nomodeset(void)
68{
69 if (drm_firmware_drivers_only())
70 return -ENODEV;
71
72 return 0;
73}
74
75struct init_funcs {
76 int (*init)(void);
77 void (*exit)(void);
78};
79
80static void xe_dummy_exit(void)
81{
82}
83
84static const struct init_funcs init_funcs[] = {
85 {
86 .init = xe_check_nomodeset,
87 },
88 {
89 .init = xe_hw_fence_module_init,
90 .exit = xe_hw_fence_module_exit,
91 },
92 {
93 .init = xe_sched_job_module_init,
94 .exit = xe_sched_job_module_exit,
95 },
96 {
97 .init = xe_register_pci_driver,
98 .exit = xe_unregister_pci_driver,
99 },
100 {
101 .init = xe_observation_sysctl_register,
102 .exit = xe_observation_sysctl_unregister,
103 },
104 {
105 .init = xe_pm_module_init,
106 .exit = xe_dummy_exit,
107 },
108};
109
110static int __init xe_call_init_func(unsigned int i)
111{
112 if (WARN_ON(i >= ARRAY_SIZE(init_funcs)))
113 return 0;
114 if (!init_funcs[i].init)
115 return 0;
116
117 return init_funcs[i].init();
118}
119
120static void xe_call_exit_func(unsigned int i)
121{
122 if (WARN_ON(i >= ARRAY_SIZE(init_funcs)))
123 return;
124 if (!init_funcs[i].exit)
125 return;
126
127 init_funcs[i].exit();
128}
129
130static int __init xe_init(void)
131{
132 int err, i;
133
134 for (i = 0; i < ARRAY_SIZE(init_funcs); i++) {
135 err = xe_call_init_func(i);
136 if (err) {
137 while (i--)
138 xe_call_exit_func(i);
139 return err;
140 }
141 }
142
143 return 0;
144}
145
146static void __exit xe_exit(void)
147{
148 int i;
149
150 for (i = ARRAY_SIZE(init_funcs) - 1; i >= 0; i--)
151 xe_call_exit_func(i);
152}
153
154module_init(xe_init);
155module_exit(xe_exit);
156
157MODULE_AUTHOR("Intel Corporation");
158
159MODULE_DESCRIPTION(DRIVER_DESC);
160MODULE_LICENSE("GPL and additional rights");