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 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 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_pci_register_driver, 75 .exit = i915_pci_unregister_driver }, 76 { .init = i915_perf_sysctl_register, 77 .exit = i915_perf_sysctl_unregister }, 78 }; 79 static int init_progress; 80 81 static 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 } 109 110 static 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 } 120 121 module_init(i915_init); 122 module_exit(i915_exit); 123 124 MODULE_AUTHOR("Tungsten Graphics, Inc."); 125 MODULE_AUTHOR("Intel Corporation"); 126 127 MODULE_DESCRIPTION(DRIVER_DESC); 128 MODULE_LICENSE("GPL and additional rights"); 129