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