1 /* 2 * SPDX-License-Identifier: MIT 3 * 4 * Copyright © 2021 Intel Corporation 5 */ 6 7 #include <drm/drm_drv.h> 8 #include <drm/drm_print.h> 9 10 #include "gem/i915_gem_context.h" 11 #include "gem/i915_gem_object.h" 12 #include "i915_active.h" 13 #include "i915_driver.h" 14 #include "i915_params.h" 15 #include "i915_pci.h" 16 #include "i915_perf.h" 17 #include "i915_request.h" 18 #include "i915_scheduler.h" 19 #include "i915_selftest.h" 20 #include "i915_vma.h" 21 #include "i915_vma_resource.h" 22 23 static int i915_check_nomodeset(void) 24 { 25 bool use_kms = true; 26 27 /* 28 * Enable KMS by default, unless explicitly overridden by 29 * either the i915.modeset parameter or by the 30 * nomodeset boot option. 31 */ 32 33 if (i915_modparams.modeset == 0) 34 pr_warn("i915.modeset=0 is deprecated. Please use the 'nomodeset' kernel parameter instead.\n"); 35 else if (i915_modparams.modeset != -1) 36 pr_warn("i915.modeset=%d is deprecated. Please remove it and the 'nomodeset' kernel parameter instead.\n", 37 i915_modparams.modeset); 38 39 if (i915_modparams.modeset == 0) 40 use_kms = false; 41 42 if (drm_firmware_drivers_only() && i915_modparams.modeset == -1) 43 use_kms = false; 44 45 if (!use_kms) { 46 DRM_DEBUG_DRIVER("KMS disabled.\n"); 47 return -ENODEV; 48 } 49 50 return 0; 51 } 52 53 static const struct { 54 int (*init)(void); 55 void (*exit)(void); 56 } init_funcs[] = { 57 { .init = i915_check_nomodeset }, 58 { .init = i915_active_module_init, 59 .exit = i915_active_module_exit }, 60 { .init = i915_context_module_init, 61 .exit = i915_context_module_exit }, 62 { .init = i915_gem_context_module_init, 63 .exit = i915_gem_context_module_exit }, 64 { .init = i915_objects_module_init, 65 .exit = i915_objects_module_exit }, 66 { .init = i915_request_module_init, 67 .exit = i915_request_module_exit }, 68 { .init = i915_scheduler_module_init, 69 .exit = i915_scheduler_module_exit }, 70 { .init = i915_vma_module_init, 71 .exit = i915_vma_module_exit }, 72 { .init = i915_vma_resource_module_init, 73 .exit = i915_vma_resource_module_exit }, 74 { .init = i915_mock_selftests }, 75 { .init = i915_pci_register_driver, 76 .exit = i915_pci_unregister_driver }, 77 { .init = i915_perf_sysctl_register, 78 .exit = i915_perf_sysctl_unregister }, 79 }; 80 static int init_progress; 81 82 static int __init i915_init(void) 83 { 84 int err, i; 85 86 for (i = 0; i < ARRAY_SIZE(init_funcs); i++) { 87 err = init_funcs[i].init(); 88 if (err < 0) { 89 while (i--) { 90 if (init_funcs[i].exit) 91 init_funcs[i].exit(); 92 } 93 return err; 94 } else if (err > 0) { 95 /* 96 * Early-exit success is reserved for things which 97 * don't have an exit() function because we have no 98 * idea how far they got or how to partially tear 99 * them down. 100 */ 101 WARN_ON(init_funcs[i].exit); 102 break; 103 } 104 } 105 106 init_progress = i; 107 108 return 0; 109 } 110 111 static void __exit i915_exit(void) 112 { 113 int i; 114 115 for (i = init_progress - 1; i >= 0; i--) { 116 GEM_BUG_ON(i >= ARRAY_SIZE(init_funcs)); 117 if (init_funcs[i].exit) 118 init_funcs[i].exit(); 119 } 120 } 121 122 module_init(i915_init); 123 module_exit(i915_exit); 124 125 MODULE_AUTHOR("Tungsten Graphics, Inc."); 126 MODULE_AUTHOR("Intel Corporation"); 127 128 MODULE_DESCRIPTION(DRIVER_DESC); 129 MODULE_LICENSE("GPL and additional rights"); 130