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|
// SPDX-License-Identifier: MIT
/*
* Copyright © 2023 Intel Corporation
*/
#include <drm/drm_managed.h>
#include <linux/kobject.h>
#include <linux/sysfs.h>
#include "xe_gt.h"
#include "xe_hw_engine_class_sysfs.h"
#include "xe_pm.h"
#define MAX_ENGINE_CLASS_NAME_LEN 16
static int xe_add_hw_engine_class_defaults(struct xe_device *xe,
struct kobject *parent);
/**
* xe_hw_engine_timeout_in_range - Helper to check if timeout is in range
* @timeout: timeout to validate
* @min: min value of valid range
* @max: max value of valid range
*
* This helper helps to validate if timeout is in min-max range of HW engine
* scheduler.
*
* Returns: Returns false value for failure and true for success.
*/
bool xe_hw_engine_timeout_in_range(u64 timeout, u64 min, u64 max)
{
return timeout >= min && timeout <= max;
}
static void kobj_xe_hw_engine_release(struct kobject *kobj)
{
kfree(kobj);
}
static const struct kobj_type kobj_xe_hw_engine_type = {
.release = kobj_xe_hw_engine_release,
.sysfs_ops = &kobj_sysfs_ops
};
static ssize_t job_timeout_max_store(struct kobject *kobj,
struct kobj_attribute *attr,
const char *buf, size_t count)
{
struct xe_hw_engine_class_intf *eclass = kobj_to_eclass(kobj);
u32 timeout;
int err;
err = kstrtou32(buf, 0, &timeout);
if (err)
return err;
if (timeout < eclass->sched_props.job_timeout_min)
return -EINVAL;
if (!xe_hw_engine_timeout_in_range(timeout,
XE_HW_ENGINE_JOB_TIMEOUT_MIN,
XE_HW_ENGINE_JOB_TIMEOUT_MAX))
return -EINVAL;
WRITE_ONCE(eclass->sched_props.job_timeout_max, timeout);
return count;
}
static ssize_t job_timeout_max_show(struct kobject *kobj,
struct kobj_attribute *attr, char *buf)
{
struct xe_hw_engine_class_intf *eclass = kobj_to_eclass(kobj);
return sprintf(buf, "%u\n", eclass->sched_props.job_timeout_max);
}
static const struct kobj_attribute job_timeout_max_attr =
__ATTR(job_timeout_max, 0644, job_timeout_max_show, job_timeout_max_store);
static ssize_t job_timeout_min_store(struct kobject *kobj,
struct kobj_attribute *attr,
const char *buf, size_t count)
{
struct xe_hw_engine_class_intf *eclass = kobj_to_eclass(kobj);
u32 timeout;
int err;
err = kstrtou32(buf, 0, &timeout);
if (err)
return err;
if (timeout > eclass->sched_props.job_timeout_max)
return -EINVAL;
if (!xe_hw_engine_timeout_in_range(timeout,
XE_HW_ENGINE_JOB_TIMEOUT_MIN,
XE_HW_ENGINE_JOB_TIMEOUT_MAX))
return -EINVAL;
WRITE_ONCE(eclass->sched_props.job_timeout_min, timeout);
return count;
}
static ssize_t job_timeout_min_show(struct kobject *kobj,
struct kobj_attribute *attr, char *buf)
{
struct xe_hw_engine_class_intf *eclass = kobj_to_eclass(kobj);
return sprintf(buf, "%u\n", eclass->sched_props.job_timeout_min);
}
static const struct kobj_attribute job_timeout_min_attr =
__ATTR(job_timeout_min, 0644, job_timeout_min_show, job_timeout_min_store);
static ssize_t job_timeout_store(struct kobject *kobj,
struct kobj_attribute *attr,
const char *buf, size_t count)
{
struct xe_hw_engine_class_intf *eclass = kobj_to_eclass(kobj);
u32 min = eclass->sched_props.job_timeout_min;
u32 max = eclass->sched_props.job_timeout_max;
u32 timeout;
int err;
err = kstrtou32(buf, 0, &timeout);
if (err)
return err;
if (!xe_hw_engine_timeout_in_range(timeout, min, max))
return -EINVAL;
WRITE_ONCE(eclass->sched_props.job_timeout_ms, timeout);
return count;
}
static ssize_t job_timeout_show(struct kobject *kobj,
struct kobj_attribute *attr, char *buf)
{
struct xe_hw_engine_class_intf *eclass = kobj_to_eclass(kobj);
return sprintf(buf, "%u\n", eclass->sched_props.job_timeout_ms);
}
static const struct kobj_attribute job_timeout_attr =
__ATTR(job_timeout_ms, 0644, job_timeout_show, job_timeout_store);
static ssize_t job_timeout_default(struct kobject *kobj,
struct kobj_attribute *attr, char *buf)
{
struct xe_hw_engine_class_intf *eclass = kobj_to_eclass(kobj->parent);
return sprintf(buf, "%u\n", eclass->defaults.job_timeout_ms);
}
static const struct kobj_attribute job_timeout_def =
__ATTR(job_timeout_ms, 0444, job_timeout_default, NULL);
static ssize_t job_timeout_min_default(struct kobject *kobj,
struct kobj_attribute *attr, char *buf)
{
struct xe_hw_engine_class_intf *eclass = kobj_to_eclass(kobj->parent);
return sprintf(buf, "%u\n", eclass->defaults.job_timeout_min);
}
static const struct kobj_attribute job_timeout_min_def =
__ATTR(job_timeout_min, 0444, job_timeout_min_default, NULL);
static ssize_t job_timeout_max_default(struct kobject *kobj,
struct kobj_attribute *attr, char *buf)
{
struct xe_hw_engine_class_intf *eclass = kobj_to_eclass(kobj->parent);
return sprintf(buf, "%u\n", eclass->defaults.job_timeout_max);
}
static const struct kobj_attribute job_timeout_max_def =
__ATTR(job_timeout_max, 0444, job_timeout_max_default, NULL);
static ssize_t timeslice_duration_store(struct kobject *kobj,
struct kobj_attribute *attr,
const char *buf, size_t count)
{
struct xe_hw_engine_class_intf *eclass = kobj_to_eclass(kobj);
u32 min = eclass->sched_props.timeslice_min;
u32 max = eclass->sched_props.timeslice_max;
u32 duration;
int err;
err = kstrtou32(buf, 0, &duration);
if (err)
return err;
if (!xe_hw_engine_timeout_in_range(duration, min, max))
return -EINVAL;
WRITE_ONCE(eclass->sched_props.timeslice_us, duration);
return count;
}
static ssize_t timeslice_duration_max_store(struct kobject *kobj,
struct kobj_attribute *attr,
const char *buf, size_t count)
{
struct xe_hw_engine_class_intf *eclass = kobj_to_eclass(kobj);
u32 duration;
int err;
err = kstrtou32(buf, 0, &duration);
if (err)
return err;
if (duration < eclass->sched_props.timeslice_min)
return -EINVAL;
if (!xe_hw_engine_timeout_in_range(duration,
XE_HW_ENGINE_TIMESLICE_MIN,
XE_HW_ENGINE_TIMESLICE_MAX))
return -EINVAL;
WRITE_ONCE(eclass->sched_props.timeslice_max, duration);
return count;
}
static ssize_t timeslice_duration_max_show(struct kobject *kobj,
struct kobj_attribute *attr,
char *buf)
{
struct xe_hw_engine_class_intf *eclass = kobj_to_eclass(kobj);
return sprintf(buf, "%u\n", eclass->sched_props.timeslice_max);
}
static const struct kobj_attribute timeslice_duration_max_attr =
__ATTR(timeslice_duration_max, 0644, timeslice_duration_max_show,
timeslice_duration_max_store);
static ssize_t timeslice_duration_min_store(struct kobject *kobj,
struct kobj_attribute *attr,
const char *buf, size_t count)
{
struct xe_hw_engine_class_intf *eclass = kobj_to_eclass(kobj);
u32 duration;
int err;
err = kstrtou32(buf, 0, &duration);
if (err)
return err;
if (duration > eclass->sched_props.timeslice_max)
return -EINVAL;
if (!xe_hw_engine_timeout_in_range(duration,
XE_HW_ENGINE_TIMESLICE_MIN,
XE_HW_ENGINE_TIMESLICE_MAX))
return -EINVAL;
WRITE_ONCE(eclass->sched_props.timeslice_min, duration);
return count;
}
static ssize_t timeslice_duration_min_show(struct kobject *kobj,
struct kobj_attribute *attr,
char *buf)
{
struct xe_hw_engine_class_intf *eclass = kobj_to_eclass(kobj);
return sprintf(buf, "%u\n", eclass->sched_props.timeslice_min);
}
static const struct kobj_attribute timeslice_duration_min_attr =
__ATTR(timeslice_duration_min, 0644, timeslice_duration_min_show,
timeslice_duration_min_store);
static ssize_t timeslice_duration_show(struct kobject *kobj,
struct kobj_attribute *attr, char *buf)
{
struct xe_hw_engine_class_intf *eclass = kobj_to_eclass(kobj);
return sprintf(buf, "%u\n", eclass->sched_props.timeslice_us);
}
static const struct kobj_attribute timeslice_duration_attr =
__ATTR(timeslice_duration_us, 0644, timeslice_duration_show,
timeslice_duration_store);
static ssize_t timeslice_default(struct kobject *kobj,
struct kobj_attribute *attr, char *buf)
{
struct xe_hw_engine_class_intf *eclass = kobj_to_eclass(kobj->parent);
return sprintf(buf, "%u\n", eclass->defaults.timeslice_us);
}
static const struct kobj_attribute timeslice_duration_def =
__ATTR(timeslice_duration_us, 0444, timeslice_default, NULL);
static ssize_t timeslice_min_default(struct kobject *kobj,
struct kobj_attribute *attr, char *buf)
{
struct xe_hw_engine_class_intf *eclass = kobj_to_eclass(kobj->parent);
return sprintf(buf, "%u\n", eclass->defaults.timeslice_min);
}
static const struct kobj_attribute timeslice_duration_min_def =
__ATTR(timeslice_duration_min, 0444, timeslice_min_default, NULL);
static ssize_t timeslice_max_default(struct kobject *kobj,
struct kobj_attribute *attr, char *buf)
{
struct xe_hw_engine_class_intf *eclass = kobj_to_eclass(kobj->parent);
return sprintf(buf, "%u\n", eclass->defaults.timeslice_max);
}
static const struct kobj_attribute timeslice_duration_max_def =
__ATTR(timeslice_duration_max, 0444, timeslice_max_default, NULL);
static ssize_t preempt_timeout_store(struct kobject *kobj,
struct kobj_attribute *attr,
const char *buf, size_t count)
{
struct xe_hw_engine_class_intf *eclass = kobj_to_eclass(kobj);
u32 min = eclass->sched_props.preempt_timeout_min;
u32 max = eclass->sched_props.preempt_timeout_max;
u32 timeout;
int err;
err = kstrtou32(buf, 0, &timeout);
if (err)
return err;
if (!xe_hw_engine_timeout_in_range(timeout, min, max))
return -EINVAL;
WRITE_ONCE(eclass->sched_props.preempt_timeout_us, timeout);
return count;
}
static ssize_t preempt_timeout_show(struct kobject *kobj,
struct kobj_attribute *attr, char *buf)
{
struct xe_hw_engine_class_intf *eclass = kobj_to_eclass(kobj);
return sprintf(buf, "%u\n", eclass->sched_props.preempt_timeout_us);
}
static const struct kobj_attribute preempt_timeout_attr =
__ATTR(preempt_timeout_us, 0644, preempt_timeout_show, preempt_timeout_store);
static ssize_t preempt_timeout_default(struct kobject *kobj,
struct kobj_attribute *attr,
char *buf)
{
struct xe_hw_engine_class_intf *eclass = kobj_to_eclass(kobj->parent);
return sprintf(buf, "%u\n", eclass->defaults.preempt_timeout_us);
}
static const struct kobj_attribute preempt_timeout_def =
__ATTR(preempt_timeout_us, 0444, preempt_timeout_default, NULL);
static ssize_t preempt_timeout_min_default(struct kobject *kobj,
struct kobj_attribute *attr,
char *buf)
{
struct xe_hw_engine_class_intf *eclass = kobj_to_eclass(kobj->parent);
return sprintf(buf, "%u\n", eclass->defaults.preempt_timeout_min);
}
static const struct kobj_attribute preempt_timeout_min_def =
__ATTR(preempt_timeout_min, 0444, preempt_timeout_min_default, NULL);
static ssize_t preempt_timeout_max_default(struct kobject *kobj,
struct kobj_attribute *attr,
char *buf)
{
struct xe_hw_engine_class_intf *eclass = kobj_to_eclass(kobj->parent);
return sprintf(buf, "%u\n", eclass->defaults.preempt_timeout_max);
}
static const struct kobj_attribute preempt_timeout_max_def =
__ATTR(preempt_timeout_max, 0444, preempt_timeout_max_default, NULL);
static ssize_t preempt_timeout_max_store(struct kobject *kobj,
struct kobj_attribute *attr,
const char *buf, size_t count)
{
struct xe_hw_engine_class_intf *eclass = kobj_to_eclass(kobj);
u32 timeout;
int err;
err = kstrtou32(buf, 0, &timeout);
if (err)
return err;
if (timeout < eclass->sched_props.preempt_timeout_min)
return -EINVAL;
if (!xe_hw_engine_timeout_in_range(timeout,
XE_HW_ENGINE_PREEMPT_TIMEOUT_MIN,
XE_HW_ENGINE_PREEMPT_TIMEOUT_MAX))
return -EINVAL;
WRITE_ONCE(eclass->sched_props.preempt_timeout_max, timeout);
return count;
}
static ssize_t preempt_timeout_max_show(struct kobject *kobj,
struct kobj_attribute *attr, char *buf)
{
struct xe_hw_engine_class_intf *eclass = kobj_to_eclass(kobj);
return sprintf(buf, "%u\n", eclass->sched_props.preempt_timeout_max);
}
static const struct kobj_attribute preempt_timeout_max_attr =
__ATTR(preempt_timeout_max, 0644, preempt_timeout_max_show,
preempt_timeout_max_store);
static ssize_t preempt_timeout_min_store(struct kobject *kobj,
struct kobj_attribute *attr,
const char *buf, size_t count)
{
struct xe_hw_engine_class_intf *eclass = kobj_to_eclass(kobj);
u32 timeout;
int err;
err = kstrtou32(buf, 0, &timeout);
if (err)
return err;
if (timeout > eclass->sched_props.preempt_timeout_max)
return -EINVAL;
if (!xe_hw_engine_timeout_in_range(timeout,
XE_HW_ENGINE_PREEMPT_TIMEOUT_MIN,
XE_HW_ENGINE_PREEMPT_TIMEOUT_MAX))
return -EINVAL;
WRITE_ONCE(eclass->sched_props.preempt_timeout_min, timeout);
return count;
}
static ssize_t preempt_timeout_min_show(struct kobject *kobj,
struct kobj_attribute *attr, char *buf)
{
struct xe_hw_engine_class_intf *eclass = kobj_to_eclass(kobj);
return sprintf(buf, "%u\n", eclass->sched_props.preempt_timeout_min);
}
static const struct kobj_attribute preempt_timeout_min_attr =
__ATTR(preempt_timeout_min, 0644, preempt_timeout_min_show,
preempt_timeout_min_store);
static const struct attribute *defaults[] = {
&job_timeout_def.attr,
&job_timeout_min_def.attr,
&job_timeout_max_def.attr,
×lice_duration_def.attr,
×lice_duration_min_def.attr,
×lice_duration_max_def.attr,
&preempt_timeout_def.attr,
&preempt_timeout_min_def.attr,
&preempt_timeout_max_def.attr,
NULL
};
static const struct attribute * const files[] = {
&job_timeout_attr.attr,
&job_timeout_min_attr.attr,
&job_timeout_max_attr.attr,
×lice_duration_attr.attr,
×lice_duration_min_attr.attr,
×lice_duration_max_attr.attr,
&preempt_timeout_attr.attr,
&preempt_timeout_min_attr.attr,
&preempt_timeout_max_attr.attr,
NULL
};
static void kobj_xe_hw_engine_class_fini(struct drm_device *drm, void *arg)
{
struct kobject *kobj = arg;
sysfs_remove_files(kobj, files);
kobject_put(kobj);
}
static struct kobj_eclass *
kobj_xe_hw_engine_class(struct xe_device *xe, struct kobject *parent, char *name)
{
struct kobj_eclass *keclass;
int err = 0;
keclass = kzalloc(sizeof(*keclass), GFP_KERNEL);
if (!keclass)
return NULL;
kobject_init(&keclass->base, &kobj_xe_hw_engine_type);
if (kobject_add(&keclass->base, parent, "%s", name)) {
kobject_put(&keclass->base);
return NULL;
}
keclass->xe = xe;
err = drmm_add_action_or_reset(&xe->drm, kobj_xe_hw_engine_class_fini,
&keclass->base);
if (err)
drm_warn(&xe->drm,
"%s: drmm_add_action_or_reset failed, err: %d\n",
__func__, err);
return keclass;
}
static void hw_engine_class_defaults_fini(struct drm_device *drm, void *arg)
{
struct kobject *kobj = arg;
sysfs_remove_files(kobj, defaults);
kobject_put(kobj);
}
static int xe_add_hw_engine_class_defaults(struct xe_device *xe,
struct kobject *parent)
{
struct kobject *kobj;
int err = 0;
kobj = kzalloc(sizeof(*kobj), GFP_KERNEL);
if (!kobj)
return -ENOMEM;
kobject_init(kobj, &kobj_xe_hw_engine_type);
err = kobject_add(kobj, parent, "%s", ".defaults");
if (err)
goto err_object;
err = sysfs_create_files(kobj, defaults);
if (err)
goto err_object;
err = drmm_add_action_or_reset(&xe->drm, hw_engine_class_defaults_fini,
kobj);
if (err)
drm_warn(&xe->drm,
"%s: drmm_add_action_or_reset failed, err: %d\n",
__func__, err);
return err;
err_object:
kobject_put(kobj);
return err;
}
static void xe_hw_engine_sysfs_kobj_release(struct kobject *kobj)
{
kfree(kobj);
}
#include "xe_pm.h"
static inline struct xe_device *pdev_to_xe_device(struct pci_dev *pdev)
{
return pci_get_drvdata(pdev);
}
static inline struct xe_device *to_xe_device(const struct drm_device *dev)
{
return container_of(dev, struct xe_device, drm);
}
static ssize_t xe_hw_engine_class_sysfs_attr_show(struct kobject *kobj,
struct attribute *attr,
char *buf)
{
struct xe_device *xe = kobj_to_xe(kobj);
struct kobj_attribute *kattr;
ssize_t ret = -EIO;
kattr = container_of(attr, struct kobj_attribute, attr);
if (kattr->show) {
xe_pm_runtime_get(xe);
ret = kattr->show(kobj, kattr, buf);
xe_pm_runtime_put(xe);
}
return ret;
}
static ssize_t xe_hw_engine_class_sysfs_attr_store(struct kobject *kobj,
struct attribute *attr,
const char *buf,
size_t count)
{
struct xe_device *xe = kobj_to_xe(kobj);
struct kobj_attribute *kattr;
ssize_t ret = -EIO;
kattr = container_of(attr, struct kobj_attribute, attr);
if (kattr->store) {
xe_pm_runtime_get(xe);
ret = kattr->store(kobj, kattr, buf, count);
xe_pm_runtime_put(xe);
}
return ret;
}
static const struct sysfs_ops xe_hw_engine_class_sysfs_ops = {
.show = xe_hw_engine_class_sysfs_attr_show,
.store = xe_hw_engine_class_sysfs_attr_store,
};
static const struct kobj_type xe_hw_engine_sysfs_kobj_type = {
.release = xe_hw_engine_sysfs_kobj_release,
.sysfs_ops = &xe_hw_engine_class_sysfs_ops,
};
static void hw_engine_class_sysfs_fini(struct drm_device *drm, void *arg)
{
struct kobject *kobj = arg;
kobject_put(kobj);
}
/**
* xe_hw_engine_class_sysfs_init - Init HW engine classes on GT.
* @gt: Xe GT.
*
* This routine creates sysfs for HW engine classes and adds methods
* to get/set different scheduling properties for HW engines class.
*
* Returns: Returns error value for failure and 0 for success.
*/
int xe_hw_engine_class_sysfs_init(struct xe_gt *gt)
{
struct xe_device *xe = gt_to_xe(gt);
struct xe_hw_engine *hwe;
enum xe_hw_engine_id id;
struct kobject *kobj;
u16 class_mask = 0;
int err = 0;
kobj = kzalloc(sizeof(*kobj), GFP_KERNEL);
if (!kobj)
return -ENOMEM;
kobject_init(kobj, &xe_hw_engine_sysfs_kobj_type);
err = kobject_add(kobj, gt->sysfs, "engines");
if (err)
goto err_object;
for_each_hw_engine(hwe, gt, id) {
char name[MAX_ENGINE_CLASS_NAME_LEN];
struct kobj_eclass *keclass;
if (hwe->class == XE_ENGINE_CLASS_OTHER ||
hwe->class == XE_ENGINE_CLASS_MAX)
continue;
if ((class_mask >> hwe->class) & 1)
continue;
class_mask |= 1 << hwe->class;
switch (hwe->class) {
case XE_ENGINE_CLASS_RENDER:
strcpy(name, "rcs");
break;
case XE_ENGINE_CLASS_VIDEO_DECODE:
strcpy(name, "vcs");
break;
case XE_ENGINE_CLASS_VIDEO_ENHANCE:
strcpy(name, "vecs");
break;
case XE_ENGINE_CLASS_COPY:
strcpy(name, "bcs");
break;
case XE_ENGINE_CLASS_COMPUTE:
strcpy(name, "ccs");
break;
default:
err = -EINVAL;
goto err_object;
}
keclass = kobj_xe_hw_engine_class(xe, kobj, name);
if (!keclass) {
err = -EINVAL;
goto err_object;
}
keclass->eclass = hwe->eclass;
err = xe_add_hw_engine_class_defaults(xe, &keclass->base);
if (err) {
drm_warn(&xe->drm,
"Add .defaults to engines failed!, err: %d\n",
err);
goto err_object;
}
err = sysfs_create_files(&keclass->base, files);
if (err)
goto err_object;
}
err = drmm_add_action_or_reset(&xe->drm, hw_engine_class_sysfs_fini,
kobj);
if (err)
drm_warn(&xe->drm,
"%s: drmm_add_action_or_reset failed, err: %d\n",
__func__, err);
return err;
err_object:
kobject_put(kobj);
return err;
}
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