1 // SPDX-License-Identifier: MIT 2 /* 3 * Copyright © 2021 Intel Corporation 4 */ 5 6 #include "xe_module.h" 7 8 #include <linux/init.h> 9 #include <linux/module.h> 10 11 #include <drm/drm_module.h> 12 13 #include "xe_defaults.h" 14 #include "xe_device_types.h" 15 #include "xe_drv.h" 16 #include "xe_configfs.h" 17 #include "xe_hw_fence.h" 18 #include "xe_pci.h" 19 #include "xe_pm.h" 20 #include "xe_observation.h" 21 #include "xe_sched_job.h" 22 23 struct xe_modparam xe_modparam = { 24 .probe_display = XE_DEFAULT_PROBE_DISPLAY, 25 .guc_log_level = XE_DEFAULT_GUC_LOG_LEVEL, 26 .force_probe = XE_DEFAULT_FORCE_PROBE, 27 #ifdef CONFIG_PCI_IOV 28 .max_vfs = XE_DEFAULT_MAX_VFS, 29 #endif 30 .wedged_mode = XE_DEFAULT_WEDGED_MODE, 31 .svm_notifier_size = XE_DEFAULT_SVM_NOTIFIER_SIZE, 32 /* the rest are 0 by default */ 33 }; 34 35 module_param_named(svm_notifier_size, xe_modparam.svm_notifier_size, uint, 0600); 36 MODULE_PARM_DESC(svm_notifier_size, "Set the svm notifier size in MiB, must be power of 2 " 37 "[default=" __stringify(XE_DEFAULT_SVM_NOTIFIER_SIZE) "]"); 38 39 #if IS_ENABLED(CONFIG_DRM_XE_DISPLAY) 40 module_param_named(probe_display, xe_modparam.probe_display, bool, 0444); 41 MODULE_PARM_DESC(probe_display, "Probe display HW, otherwise it's left untouched " 42 "[default=" __stringify(XE_DEFAULT_PROBE_DISPLAY) "])"); 43 #endif 44 45 module_param_named(vram_bar_size, xe_modparam.force_vram_bar_size, int, 0600); 46 MODULE_PARM_DESC(vram_bar_size, "Set the vram bar size in MiB (<0=disable-resize, 0=max-needed-size, >0=force-size " 47 "[default=" __stringify(XE_DEFAULT_VRAM_BAR_SIZE) "])"); 48 49 module_param_named(guc_log_level, xe_modparam.guc_log_level, int, 0600); 50 MODULE_PARM_DESC(guc_log_level, "GuC firmware logging level (0=disable, 1=normal, 2..5=verbose-levels " 51 "[default=" __stringify(XE_DEFAULT_GUC_LOG_LEVEL) "])"); 52 53 module_param_named_unsafe(guc_firmware_path, xe_modparam.guc_firmware_path, charp, 0400); 54 MODULE_PARM_DESC(guc_firmware_path, 55 "GuC firmware path to use instead of the default one"); 56 57 module_param_named_unsafe(huc_firmware_path, xe_modparam.huc_firmware_path, charp, 0400); 58 MODULE_PARM_DESC(huc_firmware_path, 59 "HuC firmware path to use instead of the default one - empty string disables"); 60 61 module_param_named_unsafe(gsc_firmware_path, xe_modparam.gsc_firmware_path, charp, 0400); 62 MODULE_PARM_DESC(gsc_firmware_path, 63 "GSC firmware path to use instead of the default one - empty string disables"); 64 65 module_param_named_unsafe(force_probe, xe_modparam.force_probe, charp, 0400); 66 MODULE_PARM_DESC(force_probe, 67 "Force probe options for specified devices. See CONFIG_DRM_XE_FORCE_PROBE for details " 68 "[default=" XE_DEFAULT_FORCE_PROBE "])"); 69 70 #ifdef CONFIG_PCI_IOV 71 module_param_named(max_vfs, xe_modparam.max_vfs, uint, 0400); 72 MODULE_PARM_DESC(max_vfs, 73 "Limit number of Virtual Functions (VFs) that could be managed. " 74 "(0=no VFs; N=allow up to N VFs " 75 "[default=" XE_DEFAULT_MAX_VFS_STR "])"); 76 #endif 77 78 module_param_named_unsafe(wedged_mode, xe_modparam.wedged_mode, uint, 0600); 79 MODULE_PARM_DESC(wedged_mode, 80 "Module's default policy for the wedged mode (0=never, 1=upon-critical-error, 2=upon-any-hang-no-reset " 81 "[default=" XE_DEFAULT_WEDGED_MODE_STR "])"); 82 83 static int xe_check_nomodeset(void) 84 { 85 if (drm_firmware_drivers_only()) 86 return -ENODEV; 87 88 return 0; 89 } 90 91 struct init_funcs { 92 int (*init)(void); 93 void (*exit)(void); 94 }; 95 96 static const struct init_funcs init_funcs[] = { 97 { 98 .init = xe_check_nomodeset, 99 }, 100 { 101 .init = xe_configfs_init, 102 .exit = xe_configfs_exit, 103 }, 104 { 105 .init = xe_hw_fence_module_init, 106 .exit = xe_hw_fence_module_exit, 107 }, 108 { 109 .init = xe_sched_job_module_init, 110 .exit = xe_sched_job_module_exit, 111 }, 112 { 113 .init = xe_register_pci_driver, 114 .exit = xe_unregister_pci_driver, 115 }, 116 { 117 .init = xe_observation_sysctl_register, 118 .exit = xe_observation_sysctl_unregister, 119 }, 120 { 121 .init = xe_pm_module_init, 122 }, 123 }; 124 125 static int __init xe_call_init_func(const struct init_funcs *func) 126 { 127 if (func->init) 128 return func->init(); 129 return 0; 130 } 131 132 static void xe_call_exit_func(const struct init_funcs *func) 133 { 134 if (func->exit) 135 func->exit(); 136 } 137 138 static int __init xe_init(void) 139 { 140 int err, i; 141 142 for (i = 0; i < ARRAY_SIZE(init_funcs); i++) { 143 err = xe_call_init_func(init_funcs + i); 144 if (err) { 145 pr_info("%s: module_init aborted at %ps %pe\n", 146 DRIVER_NAME, init_funcs[i].init, ERR_PTR(err)); 147 while (i--) 148 xe_call_exit_func(init_funcs + i); 149 return err; 150 } 151 } 152 153 return 0; 154 } 155 156 static void __exit xe_exit(void) 157 { 158 int i; 159 160 for (i = ARRAY_SIZE(init_funcs) - 1; i >= 0; i--) 161 xe_call_exit_func(init_funcs + i); 162 } 163 164 module_init(xe_init); 165 module_exit(xe_exit); 166 167 MODULE_AUTHOR("Intel Corporation"); 168 169 MODULE_DESCRIPTION(DRIVER_DESC); 170 MODULE_LICENSE("GPL and additional rights"); 171