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