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_device_types.h" 14 #include "xe_drv.h" 15 #include "xe_configfs.h" 16 #include "xe_hw_fence.h" 17 #include "xe_pci.h" 18 #include "xe_pm.h" 19 #include "xe_observation.h" 20 #include "xe_sched_job.h" 21 22 #if IS_ENABLED(CONFIG_DRM_XE_DEBUG) 23 #define DEFAULT_GUC_LOG_LEVEL 3 24 #else 25 #define DEFAULT_GUC_LOG_LEVEL 1 26 #endif 27 28 #define DEFAULT_PROBE_DISPLAY true 29 #define DEFAULT_VRAM_BAR_SIZE 0 30 #define DEFAULT_FORCE_PROBE CONFIG_DRM_XE_FORCE_PROBE 31 #define DEFAULT_MAX_VFS ~0 32 #define DEFAULT_MAX_VFS_STR "unlimited" 33 #define DEFAULT_WEDGED_MODE XE_WEDGED_MODE_DEFAULT 34 #define DEFAULT_WEDGED_MODE_STR XE_WEDGED_MODE_DEFAULT_STR 35 #define DEFAULT_SVM_NOTIFIER_SIZE 512 36 37 struct xe_modparam xe_modparam = { 38 .probe_display = DEFAULT_PROBE_DISPLAY, 39 .guc_log_level = DEFAULT_GUC_LOG_LEVEL, 40 .force_probe = DEFAULT_FORCE_PROBE, 41 #ifdef CONFIG_PCI_IOV 42 .max_vfs = DEFAULT_MAX_VFS, 43 #endif 44 .wedged_mode = DEFAULT_WEDGED_MODE, 45 .svm_notifier_size = DEFAULT_SVM_NOTIFIER_SIZE, 46 /* the rest are 0 by default */ 47 }; 48 49 module_param_named(svm_notifier_size, xe_modparam.svm_notifier_size, uint, 0600); 50 MODULE_PARM_DESC(svm_notifier_size, "Set the svm notifier size in MiB, must be power of 2 " 51 "[default=" __stringify(DEFAULT_SVM_NOTIFIER_SIZE) "]"); 52 53 module_param_named_unsafe(force_execlist, xe_modparam.force_execlist, bool, 0444); 54 MODULE_PARM_DESC(force_execlist, "Force Execlist submission"); 55 56 module_param_named(probe_display, xe_modparam.probe_display, bool, 0444); 57 MODULE_PARM_DESC(probe_display, "Probe display HW, otherwise it's left untouched " 58 "[default=" __stringify(DEFAULT_PROBE_DISPLAY) "])"); 59 60 module_param_named(vram_bar_size, xe_modparam.force_vram_bar_size, int, 0600); 61 MODULE_PARM_DESC(vram_bar_size, "Set the vram bar size in MiB (<0=disable-resize, 0=max-needed-size, >0=force-size " 62 "[default=" __stringify(DEFAULT_VRAM_BAR_SIZE) "])"); 63 64 module_param_named(guc_log_level, xe_modparam.guc_log_level, int, 0600); 65 MODULE_PARM_DESC(guc_log_level, "GuC firmware logging level (0=disable, 1=normal, 2..5=verbose-levels " 66 "[default=" __stringify(DEFAULT_GUC_LOG_LEVEL) "])"); 67 68 module_param_named_unsafe(guc_firmware_path, xe_modparam.guc_firmware_path, charp, 0400); 69 MODULE_PARM_DESC(guc_firmware_path, 70 "GuC firmware path to use instead of the default one"); 71 72 module_param_named_unsafe(huc_firmware_path, xe_modparam.huc_firmware_path, charp, 0400); 73 MODULE_PARM_DESC(huc_firmware_path, 74 "HuC firmware path to use instead of the default one - empty string disables"); 75 76 module_param_named_unsafe(gsc_firmware_path, xe_modparam.gsc_firmware_path, charp, 0400); 77 MODULE_PARM_DESC(gsc_firmware_path, 78 "GSC firmware path to use instead of the default one - empty string disables"); 79 80 module_param_named_unsafe(force_probe, xe_modparam.force_probe, charp, 0400); 81 MODULE_PARM_DESC(force_probe, 82 "Force probe options for specified devices. See CONFIG_DRM_XE_FORCE_PROBE for details " 83 "[default=" DEFAULT_FORCE_PROBE "])"); 84 85 #ifdef CONFIG_PCI_IOV 86 module_param_named(max_vfs, xe_modparam.max_vfs, uint, 0400); 87 MODULE_PARM_DESC(max_vfs, 88 "Limit number of Virtual Functions (VFs) that could be managed. " 89 "(0=no VFs; N=allow up to N VFs " 90 "[default=" DEFAULT_MAX_VFS_STR "])"); 91 #endif 92 93 module_param_named_unsafe(wedged_mode, xe_modparam.wedged_mode, uint, 0600); 94 MODULE_PARM_DESC(wedged_mode, 95 "Module's default policy for the wedged mode (0=never, 1=upon-critical-error, 2=upon-any-hang-no-reset " 96 "[default=" DEFAULT_WEDGED_MODE_STR "])"); 97 98 static int xe_check_nomodeset(void) 99 { 100 if (drm_firmware_drivers_only()) 101 return -ENODEV; 102 103 return 0; 104 } 105 106 struct init_funcs { 107 int (*init)(void); 108 void (*exit)(void); 109 }; 110 111 static const struct init_funcs init_funcs[] = { 112 { 113 .init = xe_check_nomodeset, 114 }, 115 { 116 .init = xe_configfs_init, 117 .exit = xe_configfs_exit, 118 }, 119 { 120 .init = xe_hw_fence_module_init, 121 .exit = xe_hw_fence_module_exit, 122 }, 123 { 124 .init = xe_sched_job_module_init, 125 .exit = xe_sched_job_module_exit, 126 }, 127 { 128 .init = xe_register_pci_driver, 129 .exit = xe_unregister_pci_driver, 130 }, 131 { 132 .init = xe_observation_sysctl_register, 133 .exit = xe_observation_sysctl_unregister, 134 }, 135 { 136 .init = xe_pm_module_init, 137 }, 138 }; 139 140 static int __init xe_call_init_func(const struct init_funcs *func) 141 { 142 if (func->init) 143 return func->init(); 144 return 0; 145 } 146 147 static void xe_call_exit_func(const struct init_funcs *func) 148 { 149 if (func->exit) 150 func->exit(); 151 } 152 153 static int __init xe_init(void) 154 { 155 int err, i; 156 157 for (i = 0; i < ARRAY_SIZE(init_funcs); i++) { 158 err = xe_call_init_func(init_funcs + i); 159 if (err) { 160 pr_info("%s: module_init aborted at %ps %pe\n", 161 DRIVER_NAME, init_funcs[i].init, ERR_PTR(err)); 162 while (i--) 163 xe_call_exit_func(init_funcs + i); 164 return err; 165 } 166 } 167 168 return 0; 169 } 170 171 static void __exit xe_exit(void) 172 { 173 int i; 174 175 for (i = ARRAY_SIZE(init_funcs) - 1; i >= 0; i--) 176 xe_call_exit_func(init_funcs + i); 177 } 178 179 module_init(xe_init); 180 module_exit(xe_exit); 181 182 MODULE_AUTHOR("Intel Corporation"); 183 184 MODULE_DESCRIPTION(DRIVER_DESC); 185 MODULE_LICENSE("GPL and additional rights"); 186