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// SPDX-License-Identifier: MIT
/*
* Copyright © 2021 Intel Corporation
*/
#include "xe_module.h"
#include <linux/init.h>
#include <linux/module.h>
#include <drm/drm_module.h>
#include "xe_drv.h"
#include "xe_configfs.h"
#include "xe_hw_fence.h"
#include "xe_pci.h"
#include "xe_pm.h"
#include "xe_observation.h"
#include "xe_sched_job.h"
#if IS_ENABLED(CONFIG_DRM_XE_DEBUG)
#define DEFAULT_GUC_LOG_LEVEL 3
#else
#define DEFAULT_GUC_LOG_LEVEL 1
#endif
#define DEFAULT_PROBE_DISPLAY true
#define DEFAULT_VRAM_BAR_SIZE 0
#define DEFAULT_FORCE_PROBE CONFIG_DRM_XE_FORCE_PROBE
#define DEFAULT_MAX_VFS ~0
#define DEFAULT_MAX_VFS_STR "unlimited"
#define DEFAULT_WEDGED_MODE 1
#define DEFAULT_SVM_NOTIFIER_SIZE 512
struct xe_modparam xe_modparam = {
.probe_display = DEFAULT_PROBE_DISPLAY,
.guc_log_level = DEFAULT_GUC_LOG_LEVEL,
.force_probe = DEFAULT_FORCE_PROBE,
#ifdef CONFIG_PCI_IOV
.max_vfs = DEFAULT_MAX_VFS,
#endif
.wedged_mode = DEFAULT_WEDGED_MODE,
.svm_notifier_size = DEFAULT_SVM_NOTIFIER_SIZE,
/* the rest are 0 by default */
};
module_param_named(svm_notifier_size, xe_modparam.svm_notifier_size, uint, 0600);
MODULE_PARM_DESC(svm_notifier_size, "Set the svm notifier size in MiB, must be power of 2 "
"[default=" __stringify(DEFAULT_SVM_NOTIFIER_SIZE) "]");
module_param_named_unsafe(force_execlist, xe_modparam.force_execlist, bool, 0444);
MODULE_PARM_DESC(force_execlist, "Force Execlist submission");
module_param_named(probe_display, xe_modparam.probe_display, bool, 0444);
MODULE_PARM_DESC(probe_display, "Probe display HW, otherwise it's left untouched "
"[default=" __stringify(DEFAULT_PROBE_DISPLAY) "])");
module_param_named(vram_bar_size, xe_modparam.force_vram_bar_size, int, 0600);
MODULE_PARM_DESC(vram_bar_size, "Set the vram bar size in MiB (<0=disable-resize, 0=max-needed-size, >0=force-size "
"[default=" __stringify(DEFAULT_VRAM_BAR_SIZE) "])");
module_param_named(guc_log_level, xe_modparam.guc_log_level, int, 0600);
MODULE_PARM_DESC(guc_log_level, "GuC firmware logging level (0=disable, 1=normal, 2..5=verbose-levels "
"[default=" __stringify(DEFAULT_GUC_LOG_LEVEL) "])");
module_param_named_unsafe(guc_firmware_path, xe_modparam.guc_firmware_path, charp, 0400);
MODULE_PARM_DESC(guc_firmware_path,
"GuC firmware path to use instead of the default one");
module_param_named_unsafe(huc_firmware_path, xe_modparam.huc_firmware_path, charp, 0400);
MODULE_PARM_DESC(huc_firmware_path,
"HuC firmware path to use instead of the default one - empty string disables");
module_param_named_unsafe(gsc_firmware_path, xe_modparam.gsc_firmware_path, charp, 0400);
MODULE_PARM_DESC(gsc_firmware_path,
"GSC firmware path to use instead of the default one - empty string disables");
module_param_named_unsafe(force_probe, xe_modparam.force_probe, charp, 0400);
MODULE_PARM_DESC(force_probe,
"Force probe options for specified devices. See CONFIG_DRM_XE_FORCE_PROBE for details "
"[default=" DEFAULT_FORCE_PROBE "])");
#ifdef CONFIG_PCI_IOV
module_param_named(max_vfs, xe_modparam.max_vfs, uint, 0400);
MODULE_PARM_DESC(max_vfs,
"Limit number of Virtual Functions (VFs) that could be managed. "
"(0=no VFs; N=allow up to N VFs "
"[default=" DEFAULT_MAX_VFS_STR "])");
#endif
module_param_named_unsafe(wedged_mode, xe_modparam.wedged_mode, int, 0600);
MODULE_PARM_DESC(wedged_mode,
"Module's default policy for the wedged mode (0=never, 1=upon-critical-errors, 2=upon-any-hang "
"[default=" __stringify(DEFAULT_WEDGED_MODE) "])");
static int xe_check_nomodeset(void)
{
if (drm_firmware_drivers_only())
return -ENODEV;
return 0;
}
struct init_funcs {
int (*init)(void);
void (*exit)(void);
};
static const struct init_funcs init_funcs[] = {
{
.init = xe_check_nomodeset,
},
{
.init = xe_configfs_init,
.exit = xe_configfs_exit,
},
{
.init = xe_hw_fence_module_init,
.exit = xe_hw_fence_module_exit,
},
{
.init = xe_sched_job_module_init,
.exit = xe_sched_job_module_exit,
},
{
.init = xe_register_pci_driver,
.exit = xe_unregister_pci_driver,
},
{
.init = xe_observation_sysctl_register,
.exit = xe_observation_sysctl_unregister,
},
{
.init = xe_pm_module_init,
},
};
static int __init xe_call_init_func(unsigned int i)
{
if (WARN_ON(i >= ARRAY_SIZE(init_funcs)))
return 0;
if (!init_funcs[i].init)
return 0;
return init_funcs[i].init();
}
static void xe_call_exit_func(unsigned int i)
{
if (WARN_ON(i >= ARRAY_SIZE(init_funcs)))
return;
if (!init_funcs[i].exit)
return;
init_funcs[i].exit();
}
static int __init xe_init(void)
{
int err, i;
for (i = 0; i < ARRAY_SIZE(init_funcs); i++) {
err = xe_call_init_func(i);
if (err) {
while (i--)
xe_call_exit_func(i);
return err;
}
}
return 0;
}
static void __exit xe_exit(void)
{
int i;
for (i = ARRAY_SIZE(init_funcs) - 1; i >= 0; i--)
xe_call_exit_func(i);
}
module_init(xe_init);
module_exit(xe_exit);
MODULE_AUTHOR("Intel Corporation");
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE("GPL and additional rights");
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