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
 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_IOV
 57module_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#endif
 62
 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");