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