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