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