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