1/*
2 * SPDX-License-Identifier: MIT
3 *
4 * Copyright © 2021 Intel Corporation
5 */
6
7#include <drm/drm_drv.h>
8
9#include "gem/i915_gem_context.h"
10#include "gem/i915_gem_object.h"
11#include "i915_active.h"
12#include "i915_driver.h"
13#include "i915_params.h"
14#include "i915_pci.h"
15#include "i915_perf.h"
16#include "i915_request.h"
17#include "i915_scheduler.h"
18#include "i915_selftest.h"
19#include "i915_vma.h"
20#include "i915_vma_resource.h"
21
22static int i915_check_nomodeset(void)
23{
24 bool use_kms = true;
25
26 /*
27 * Enable KMS by default, unless explicitly overridden by
28 * either the i915.modeset parameter or by the
29 * nomodeset boot option.
30 */
31
32 if (i915_modparams.modeset == 0)
33 pr_warn("i915.modeset=0 is deprecated. Please use the 'nomodeset' kernel parameter instead.\n");
34 else if (i915_modparams.modeset != -1)
35 pr_warn("i915.modeset=%d is deprecated. Please remove it and the 'nomodeset' kernel parameter instead.\n",
36 i915_modparams.modeset);
37
38 if (i915_modparams.modeset == 0)
39 use_kms = false;
40
41 if (drm_firmware_drivers_only() && i915_modparams.modeset == -1)
42 use_kms = false;
43
44 if (!use_kms) {
45 DRM_DEBUG_DRIVER("KMS disabled.\n");
46 return -ENODEV;
47 }
48
49 return 0;
50}
51
52static const struct {
53 int (*init)(void);
54 void (*exit)(void);
55} init_funcs[] = {
56 { .init = i915_check_nomodeset },
57 { .init = i915_active_module_init,
58 .exit = i915_active_module_exit },
59 { .init = i915_context_module_init,
60 .exit = i915_context_module_exit },
61 { .init = i915_gem_context_module_init,
62 .exit = i915_gem_context_module_exit },
63 { .init = i915_objects_module_init,
64 .exit = i915_objects_module_exit },
65 { .init = i915_request_module_init,
66 .exit = i915_request_module_exit },
67 { .init = i915_scheduler_module_init,
68 .exit = i915_scheduler_module_exit },
69 { .init = i915_vma_module_init,
70 .exit = i915_vma_module_exit },
71 { .init = i915_vma_resource_module_init,
72 .exit = i915_vma_resource_module_exit },
73 { .init = i915_mock_selftests },
74 { .init = i915_pci_register_driver,
75 .exit = i915_pci_unregister_driver },
76 { .init = i915_perf_sysctl_register,
77 .exit = i915_perf_sysctl_unregister },
78};
79static int init_progress;
80
81static int __init i915_init(void)
82{
83 int err, i;
84
85 for (i = 0; i < ARRAY_SIZE(init_funcs); i++) {
86 err = init_funcs[i].init();
87 if (err < 0) {
88 while (i--) {
89 if (init_funcs[i].exit)
90 init_funcs[i].exit();
91 }
92 return err;
93 } else if (err > 0) {
94 /*
95 * Early-exit success is reserved for things which
96 * don't have an exit() function because we have no
97 * idea how far they got or how to partially tear
98 * them down.
99 */
100 WARN_ON(init_funcs[i].exit);
101 break;
102 }
103 }
104
105 init_progress = i;
106
107 return 0;
108}
109
110static void __exit i915_exit(void)
111{
112 int i;
113
114 for (i = init_progress - 1; i >= 0; i--) {
115 GEM_BUG_ON(i >= ARRAY_SIZE(init_funcs));
116 if (init_funcs[i].exit)
117 init_funcs[i].exit();
118 }
119}
120
121module_init(i915_init);
122module_exit(i915_exit);
123
124MODULE_AUTHOR("Tungsten Graphics, Inc.");
125MODULE_AUTHOR("Intel Corporation");
126
127MODULE_DESCRIPTION(DRIVER_DESC);
128MODULE_LICENSE("GPL and additional rights");
129