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1// SPDX-License-Identifier: MIT2/*3 * Copyright © 2021 Intel Corporation4 */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 20struct xe_modparam xe_modparam = {21 .probe_display = true,22 .guc_log_level = 5,23 .force_probe = CONFIG_DRM_XE_FORCE_PROBE,24 .wedged_mode = 1,25 /* the rest are 0 by default */26};27 28module_param_named_unsafe(force_execlist, xe_modparam.force_execlist, bool, 0444);29MODULE_PARM_DESC(force_execlist, "Force Execlist submission");30 31module_param_named(probe_display, xe_modparam.probe_display, bool, 0444);32MODULE_PARM_DESC(probe_display, "Probe display HW, otherwise it's left untouched (default: true)");33 34module_param_named(vram_bar_size, xe_modparam.force_vram_bar_size, uint, 0600);35MODULE_PARM_DESC(vram_bar_size, "Set the vram bar size(in MiB)");36 37module_param_named(guc_log_level, xe_modparam.guc_log_level, int, 0600);38MODULE_PARM_DESC(guc_log_level, "GuC firmware logging level (0=disable, 1..5=enable with verbosity min..max)");39 40module_param_named_unsafe(guc_firmware_path, xe_modparam.guc_firmware_path, charp, 0400);41MODULE_PARM_DESC(guc_firmware_path,42 "GuC firmware path to use instead of the default one");43 44module_param_named_unsafe(huc_firmware_path, xe_modparam.huc_firmware_path, charp, 0400);45MODULE_PARM_DESC(huc_firmware_path,46 "HuC firmware path to use instead of the default one - empty string disables");47 48module_param_named_unsafe(gsc_firmware_path, xe_modparam.gsc_firmware_path, charp, 0400);49MODULE_PARM_DESC(gsc_firmware_path,50 "GSC firmware path to use instead of the default one - empty string disables");51 52module_param_named_unsafe(force_probe, xe_modparam.force_probe, charp, 0400);53MODULE_PARM_DESC(force_probe,54 "Force probe options for specified devices. See CONFIG_DRM_XE_FORCE_PROBE for details.");55 56#ifdef CONFIG_PCI_IOV57module_param_named(max_vfs, xe_modparam.max_vfs, uint, 0400);58MODULE_PARM_DESC(max_vfs,59 "Limit number of Virtual Functions (VFs) that could be managed. "60 "(0 = no VFs [default]; N = allow up to N VFs)");61#endif62 63module_param_named_unsafe(wedged_mode, xe_modparam.wedged_mode, int, 0600);64MODULE_PARM_DESC(wedged_mode,65 "Module's default policy for the wedged mode - 0=never, 1=upon-critical-errors[default], 2=upon-any-hang");66 67static int xe_check_nomodeset(void)68{69 if (drm_firmware_drivers_only())70 return -ENODEV;71 72 return 0;73}74 75struct init_funcs {76 int (*init)(void);77 void (*exit)(void);78};79 80static void xe_dummy_exit(void)81{82}83 84static 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 .exit = xe_dummy_exit,107 },108};109 110static int __init xe_call_init_func(unsigned int i)111{112 if (WARN_ON(i >= ARRAY_SIZE(init_funcs)))113 return 0;114 if (!init_funcs[i].init)115 return 0;116 117 return init_funcs[i].init();118}119 120static void xe_call_exit_func(unsigned int i)121{122 if (WARN_ON(i >= ARRAY_SIZE(init_funcs)))123 return;124 if (!init_funcs[i].exit)125 return;126 127 init_funcs[i].exit();128}129 130static int __init xe_init(void)131{132 int err, i;133 134 for (i = 0; i < ARRAY_SIZE(init_funcs); i++) {135 err = xe_call_init_func(i);136 if (err) {137 while (i--)138 xe_call_exit_func(i);139 return err;140 }141 }142 143 return 0;144}145 146static void __exit xe_exit(void)147{148 int i;149 150 for (i = ARRAY_SIZE(init_funcs) - 1; i >= 0; i--)151 xe_call_exit_func(i);152}153 154module_init(xe_init);155module_exit(xe_exit);156 157MODULE_AUTHOR("Intel Corporation");158 159MODULE_DESCRIPTION(DRIVER_DESC);160MODULE_LICENSE("GPL and additional rights");161