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 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 52 static 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_pmu_init, 75 .exit = i915_pmu_exit }, 76 { .init = i915_pci_register_driver, 77 .exit = i915_pci_unregister_driver }, 78 { .init = i915_perf_sysctl_register, 79 .exit = i915_perf_sysctl_unregister }, 80 }; 81 static int init_progress; 82 83 static int __init i915_init(void) 84 { 85 int err, i; 86 87 for (i = 0; i < ARRAY_SIZE(init_funcs); i++) { 88 err = init_funcs[i].init(); 89 if (err < 0) { 90 while (i--) { 91 if (init_funcs[i].exit) 92 init_funcs[i].exit(); 93 } 94 return err; 95 } else if (err > 0) { 96 /* 97 * Early-exit success is reserved for things which 98 * don't have an exit() function because we have no 99 * idea how far they got or how to partially tear 100 * them down. 101 */ 102 WARN_ON(init_funcs[i].exit); 103 break; 104 } 105 } 106 107 init_progress = i; 108 109 return 0; 110 } 111 112 static void __exit i915_exit(void) 113 { 114 int i; 115 116 for (i = init_progress - 1; i >= 0; i--) { 117 GEM_BUG_ON(i >= ARRAY_SIZE(init_funcs)); 118 if (init_funcs[i].exit) 119 init_funcs[i].exit(); 120 } 121 } 122 123 module_init(i915_init); 124 module_exit(i915_exit); 125 126 MODULE_AUTHOR("Tungsten Graphics, Inc."); 127 MODULE_AUTHOR("Intel Corporation"); 128 129 MODULE_DESCRIPTION(DRIVER_DESC); 130 MODULE_LICENSE("GPL and additional rights"); 131