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_buddy.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 21 static int i915_check_nomodeset(void) 22 { 23 bool use_kms = true; 24 25 /* 26 * Enable KMS by default, unless explicitly overriden by 27 * either the i915.modeset parameter or by the 28 * nomodeset boot option. 29 */ 30 31 if (i915_modparams.modeset == 0) 32 use_kms = false; 33 34 if (drm_firmware_drivers_only() && i915_modparams.modeset == -1) 35 use_kms = false; 36 37 if (!use_kms) { 38 /* Silently fail loading to not upset userspace. */ 39 DRM_DEBUG_DRIVER("KMS disabled.\n"); 40 return 1; 41 } 42 43 return 0; 44 } 45 46 static const struct { 47 int (*init)(void); 48 void (*exit)(void); 49 } init_funcs[] = { 50 { .init = i915_check_nomodeset }, 51 { .init = i915_active_module_init, 52 .exit = i915_active_module_exit }, 53 { .init = i915_buddy_module_init, 54 .exit = i915_buddy_module_exit }, 55 { .init = i915_context_module_init, 56 .exit = i915_context_module_exit }, 57 { .init = i915_gem_context_module_init, 58 .exit = i915_gem_context_module_exit }, 59 { .init = i915_objects_module_init, 60 .exit = i915_objects_module_exit }, 61 { .init = i915_request_module_init, 62 .exit = i915_request_module_exit }, 63 { .init = i915_scheduler_module_init, 64 .exit = i915_scheduler_module_exit }, 65 { .init = i915_vma_module_init, 66 .exit = i915_vma_module_exit }, 67 { .init = i915_mock_selftests }, 68 { .init = i915_pmu_init, 69 .exit = i915_pmu_exit }, 70 { .init = i915_pci_register_driver, 71 .exit = i915_pci_unregister_driver }, 72 { .init = i915_perf_sysctl_register, 73 .exit = i915_perf_sysctl_unregister }, 74 }; 75 static int init_progress; 76 77 static int __init i915_init(void) 78 { 79 int err, i; 80 81 for (i = 0; i < ARRAY_SIZE(init_funcs); i++) { 82 err = init_funcs[i].init(); 83 if (err < 0) { 84 while (i--) { 85 if (init_funcs[i].exit) 86 init_funcs[i].exit(); 87 } 88 return err; 89 } else if (err > 0) { 90 /* 91 * Early-exit success is reserved for things which 92 * don't have an exit() function because we have no 93 * idea how far they got or how to partially tear 94 * them down. 95 */ 96 WARN_ON(init_funcs[i].exit); 97 break; 98 } 99 } 100 101 init_progress = i; 102 103 return 0; 104 } 105 106 static void __exit i915_exit(void) 107 { 108 int i; 109 110 for (i = init_progress - 1; i >= 0; i--) { 111 GEM_BUG_ON(i >= ARRAY_SIZE(init_funcs)); 112 if (init_funcs[i].exit) 113 init_funcs[i].exit(); 114 } 115 } 116 117 module_init(i915_init); 118 module_exit(i915_exit); 119 120 MODULE_AUTHOR("Tungsten Graphics, Inc."); 121 MODULE_AUTHOR("Intel Corporation"); 122 123 MODULE_DESCRIPTION(DRIVER_DESC); 124 MODULE_LICENSE("GPL and additional rights"); 125