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 22 static int i915_check_nomodeset(void) 23 { 24 bool use_kms = true; 25 26 /* 27 * Enable KMS by default, unless explicitly overriden by 28 * either the i915.modeset parameter or by the 29 * nomodeset boot option. 30 */ 31 32 if (i915_modparams.modeset == 0) 33 use_kms = false; 34 35 if (drm_firmware_drivers_only() && i915_modparams.modeset == -1) 36 use_kms = false; 37 38 if (!use_kms) { 39 /* Silently fail loading to not upset userspace. */ 40 DRM_DEBUG_DRIVER("KMS disabled.\n"); 41 return 1; 42 } 43 44 return 0; 45 } 46 47 static const struct { 48 int (*init)(void); 49 void (*exit)(void); 50 } init_funcs[] = { 51 { .init = i915_check_nomodeset }, 52 { .init = i915_active_module_init, 53 .exit = i915_active_module_exit }, 54 { .init = i915_context_module_init, 55 .exit = i915_context_module_exit }, 56 { .init = i915_gem_context_module_init, 57 .exit = i915_gem_context_module_exit }, 58 { .init = i915_objects_module_init, 59 .exit = i915_objects_module_exit }, 60 { .init = i915_request_module_init, 61 .exit = i915_request_module_exit }, 62 { .init = i915_scheduler_module_init, 63 .exit = i915_scheduler_module_exit }, 64 { .init = i915_vma_module_init, 65 .exit = i915_vma_module_exit }, 66 { .init = i915_vma_resource_module_init, 67 .exit = i915_vma_resource_module_exit }, 68 { .init = i915_mock_selftests }, 69 { .init = i915_pmu_init, 70 .exit = i915_pmu_exit }, 71 { .init = i915_pci_register_driver, 72 .exit = i915_pci_unregister_driver }, 73 { .init = i915_perf_sysctl_register, 74 .exit = i915_perf_sysctl_unregister }, 75 }; 76 static int init_progress; 77 78 static int __init i915_init(void) 79 { 80 int err, i; 81 82 for (i = 0; i < ARRAY_SIZE(init_funcs); i++) { 83 err = init_funcs[i].init(); 84 if (err < 0) { 85 while (i--) { 86 if (init_funcs[i].exit) 87 init_funcs[i].exit(); 88 } 89 return err; 90 } else if (err > 0) { 91 /* 92 * Early-exit success is reserved for things which 93 * don't have an exit() function because we have no 94 * idea how far they got or how to partially tear 95 * them down. 96 */ 97 WARN_ON(init_funcs[i].exit); 98 break; 99 } 100 } 101 102 init_progress = i; 103 104 return 0; 105 } 106 107 static void __exit i915_exit(void) 108 { 109 int i; 110 111 for (i = init_progress - 1; i >= 0; i--) { 112 GEM_BUG_ON(i >= ARRAY_SIZE(init_funcs)); 113 if (init_funcs[i].exit) 114 init_funcs[i].exit(); 115 } 116 } 117 118 module_init(i915_init); 119 module_exit(i915_exit); 120 121 MODULE_AUTHOR("Tungsten Graphics, Inc."); 122 MODULE_AUTHOR("Intel Corporation"); 123 124 MODULE_DESCRIPTION(DRIVER_DESC); 125 MODULE_LICENSE("GPL and additional rights"); 126