1819 lines
44 KiB
C
1819 lines
44 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
/* Copyright(c) 2019 Intel Corporation. All rights rsvd. */
|
|
#include <linux/init.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/module.h>
|
|
#include <linux/pci.h>
|
|
#include <linux/device.h>
|
|
#include <linux/io-64-nonatomic-lo-hi.h>
|
|
#include <uapi/linux/idxd.h>
|
|
#include "registers.h"
|
|
#include "idxd.h"
|
|
|
|
static char *idxd_wq_type_names[] = {
|
|
[IDXD_WQT_NONE] = "none",
|
|
[IDXD_WQT_KERNEL] = "kernel",
|
|
[IDXD_WQT_USER] = "user",
|
|
};
|
|
|
|
/* IDXD engine attributes */
|
|
static ssize_t engine_group_id_show(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct idxd_engine *engine = confdev_to_engine(dev);
|
|
|
|
if (engine->group)
|
|
return sysfs_emit(buf, "%d\n", engine->group->id);
|
|
else
|
|
return sysfs_emit(buf, "%d\n", -1);
|
|
}
|
|
|
|
static ssize_t engine_group_id_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
struct idxd_engine *engine = confdev_to_engine(dev);
|
|
struct idxd_device *idxd = engine->idxd;
|
|
long id;
|
|
int rc;
|
|
struct idxd_group *prevg;
|
|
|
|
rc = kstrtol(buf, 10, &id);
|
|
if (rc < 0)
|
|
return -EINVAL;
|
|
|
|
if (!test_bit(IDXD_FLAG_CONFIGURABLE, &idxd->flags))
|
|
return -EPERM;
|
|
|
|
if (id > idxd->max_groups - 1 || id < -1)
|
|
return -EINVAL;
|
|
|
|
if (id == -1) {
|
|
if (engine->group) {
|
|
engine->group->num_engines--;
|
|
engine->group = NULL;
|
|
}
|
|
return count;
|
|
}
|
|
|
|
prevg = engine->group;
|
|
|
|
if (prevg)
|
|
prevg->num_engines--;
|
|
engine->group = idxd->groups[id];
|
|
engine->group->num_engines++;
|
|
|
|
return count;
|
|
}
|
|
|
|
static struct device_attribute dev_attr_engine_group =
|
|
__ATTR(group_id, 0644, engine_group_id_show,
|
|
engine_group_id_store);
|
|
|
|
static struct attribute *idxd_engine_attributes[] = {
|
|
&dev_attr_engine_group.attr,
|
|
NULL,
|
|
};
|
|
|
|
static const struct attribute_group idxd_engine_attribute_group = {
|
|
.attrs = idxd_engine_attributes,
|
|
};
|
|
|
|
static const struct attribute_group *idxd_engine_attribute_groups[] = {
|
|
&idxd_engine_attribute_group,
|
|
NULL,
|
|
};
|
|
|
|
static void idxd_conf_engine_release(struct device *dev)
|
|
{
|
|
struct idxd_engine *engine = confdev_to_engine(dev);
|
|
|
|
kfree(engine);
|
|
}
|
|
|
|
struct device_type idxd_engine_device_type = {
|
|
.name = "engine",
|
|
.release = idxd_conf_engine_release,
|
|
.groups = idxd_engine_attribute_groups,
|
|
};
|
|
|
|
/* Group attributes */
|
|
|
|
static void idxd_set_free_rdbufs(struct idxd_device *idxd)
|
|
{
|
|
int i, rdbufs;
|
|
|
|
for (i = 0, rdbufs = 0; i < idxd->max_groups; i++) {
|
|
struct idxd_group *g = idxd->groups[i];
|
|
|
|
rdbufs += g->rdbufs_reserved;
|
|
}
|
|
|
|
idxd->nr_rdbufs = idxd->max_rdbufs - rdbufs;
|
|
}
|
|
|
|
static ssize_t group_read_buffers_reserved_show(struct device *dev,
|
|
struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
struct idxd_group *group = confdev_to_group(dev);
|
|
|
|
return sysfs_emit(buf, "%u\n", group->rdbufs_reserved);
|
|
}
|
|
|
|
static ssize_t group_tokens_reserved_show(struct device *dev,
|
|
struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
dev_warn_once(dev, "attribute deprecated, see read_buffers_reserved.\n");
|
|
return group_read_buffers_reserved_show(dev, attr, buf);
|
|
}
|
|
|
|
static ssize_t group_read_buffers_reserved_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
struct idxd_group *group = confdev_to_group(dev);
|
|
struct idxd_device *idxd = group->idxd;
|
|
unsigned long val;
|
|
int rc;
|
|
|
|
rc = kstrtoul(buf, 10, &val);
|
|
if (rc < 0)
|
|
return -EINVAL;
|
|
|
|
if (idxd->data->type == IDXD_TYPE_IAX)
|
|
return -EOPNOTSUPP;
|
|
|
|
if (!test_bit(IDXD_FLAG_CONFIGURABLE, &idxd->flags))
|
|
return -EPERM;
|
|
|
|
if (idxd->state == IDXD_DEV_ENABLED)
|
|
return -EPERM;
|
|
|
|
if (val > idxd->max_rdbufs)
|
|
return -EINVAL;
|
|
|
|
if (val > idxd->nr_rdbufs + group->rdbufs_reserved)
|
|
return -EINVAL;
|
|
|
|
group->rdbufs_reserved = val;
|
|
idxd_set_free_rdbufs(idxd);
|
|
return count;
|
|
}
|
|
|
|
static ssize_t group_tokens_reserved_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
dev_warn_once(dev, "attribute deprecated, see read_buffers_reserved.\n");
|
|
return group_read_buffers_reserved_store(dev, attr, buf, count);
|
|
}
|
|
|
|
static struct device_attribute dev_attr_group_tokens_reserved =
|
|
__ATTR(tokens_reserved, 0644, group_tokens_reserved_show,
|
|
group_tokens_reserved_store);
|
|
|
|
static struct device_attribute dev_attr_group_read_buffers_reserved =
|
|
__ATTR(read_buffers_reserved, 0644, group_read_buffers_reserved_show,
|
|
group_read_buffers_reserved_store);
|
|
|
|
static ssize_t group_read_buffers_allowed_show(struct device *dev,
|
|
struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
struct idxd_group *group = confdev_to_group(dev);
|
|
|
|
return sysfs_emit(buf, "%u\n", group->rdbufs_allowed);
|
|
}
|
|
|
|
static ssize_t group_tokens_allowed_show(struct device *dev,
|
|
struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
dev_warn_once(dev, "attribute deprecated, see read_buffers_allowed.\n");
|
|
return group_read_buffers_allowed_show(dev, attr, buf);
|
|
}
|
|
|
|
static ssize_t group_read_buffers_allowed_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
struct idxd_group *group = confdev_to_group(dev);
|
|
struct idxd_device *idxd = group->idxd;
|
|
unsigned long val;
|
|
int rc;
|
|
|
|
rc = kstrtoul(buf, 10, &val);
|
|
if (rc < 0)
|
|
return -EINVAL;
|
|
|
|
if (idxd->data->type == IDXD_TYPE_IAX)
|
|
return -EOPNOTSUPP;
|
|
|
|
if (!test_bit(IDXD_FLAG_CONFIGURABLE, &idxd->flags))
|
|
return -EPERM;
|
|
|
|
if (idxd->state == IDXD_DEV_ENABLED)
|
|
return -EPERM;
|
|
|
|
if (val < 4 * group->num_engines ||
|
|
val > group->rdbufs_reserved + idxd->nr_rdbufs)
|
|
return -EINVAL;
|
|
|
|
group->rdbufs_allowed = val;
|
|
return count;
|
|
}
|
|
|
|
static ssize_t group_tokens_allowed_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
dev_warn_once(dev, "attribute deprecated, see read_buffers_allowed.\n");
|
|
return group_read_buffers_allowed_store(dev, attr, buf, count);
|
|
}
|
|
|
|
static struct device_attribute dev_attr_group_tokens_allowed =
|
|
__ATTR(tokens_allowed, 0644, group_tokens_allowed_show,
|
|
group_tokens_allowed_store);
|
|
|
|
static struct device_attribute dev_attr_group_read_buffers_allowed =
|
|
__ATTR(read_buffers_allowed, 0644, group_read_buffers_allowed_show,
|
|
group_read_buffers_allowed_store);
|
|
|
|
static ssize_t group_use_read_buffer_limit_show(struct device *dev,
|
|
struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
struct idxd_group *group = confdev_to_group(dev);
|
|
|
|
return sysfs_emit(buf, "%u\n", group->use_rdbuf_limit);
|
|
}
|
|
|
|
static ssize_t group_use_token_limit_show(struct device *dev,
|
|
struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
dev_warn_once(dev, "attribute deprecated, see use_read_buffer_limit.\n");
|
|
return group_use_read_buffer_limit_show(dev, attr, buf);
|
|
}
|
|
|
|
static ssize_t group_use_read_buffer_limit_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
struct idxd_group *group = confdev_to_group(dev);
|
|
struct idxd_device *idxd = group->idxd;
|
|
unsigned long val;
|
|
int rc;
|
|
|
|
rc = kstrtoul(buf, 10, &val);
|
|
if (rc < 0)
|
|
return -EINVAL;
|
|
|
|
if (idxd->data->type == IDXD_TYPE_IAX)
|
|
return -EOPNOTSUPP;
|
|
|
|
if (!test_bit(IDXD_FLAG_CONFIGURABLE, &idxd->flags))
|
|
return -EPERM;
|
|
|
|
if (idxd->state == IDXD_DEV_ENABLED)
|
|
return -EPERM;
|
|
|
|
if (idxd->rdbuf_limit == 0)
|
|
return -EPERM;
|
|
|
|
group->use_rdbuf_limit = !!val;
|
|
return count;
|
|
}
|
|
|
|
static ssize_t group_use_token_limit_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
dev_warn_once(dev, "attribute deprecated, see use_read_buffer_limit.\n");
|
|
return group_use_read_buffer_limit_store(dev, attr, buf, count);
|
|
}
|
|
|
|
static struct device_attribute dev_attr_group_use_token_limit =
|
|
__ATTR(use_token_limit, 0644, group_use_token_limit_show,
|
|
group_use_token_limit_store);
|
|
|
|
static struct device_attribute dev_attr_group_use_read_buffer_limit =
|
|
__ATTR(use_read_buffer_limit, 0644, group_use_read_buffer_limit_show,
|
|
group_use_read_buffer_limit_store);
|
|
|
|
static ssize_t group_engines_show(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct idxd_group *group = confdev_to_group(dev);
|
|
int i, rc = 0;
|
|
struct idxd_device *idxd = group->idxd;
|
|
|
|
for (i = 0; i < idxd->max_engines; i++) {
|
|
struct idxd_engine *engine = idxd->engines[i];
|
|
|
|
if (!engine->group)
|
|
continue;
|
|
|
|
if (engine->group->id == group->id)
|
|
rc += sysfs_emit_at(buf, rc, "engine%d.%d ", idxd->id, engine->id);
|
|
}
|
|
|
|
if (!rc)
|
|
return 0;
|
|
rc--;
|
|
rc += sysfs_emit_at(buf, rc, "\n");
|
|
|
|
return rc;
|
|
}
|
|
|
|
static struct device_attribute dev_attr_group_engines =
|
|
__ATTR(engines, 0444, group_engines_show, NULL);
|
|
|
|
static ssize_t group_work_queues_show(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct idxd_group *group = confdev_to_group(dev);
|
|
int i, rc = 0;
|
|
struct idxd_device *idxd = group->idxd;
|
|
|
|
for (i = 0; i < idxd->max_wqs; i++) {
|
|
struct idxd_wq *wq = idxd->wqs[i];
|
|
|
|
if (!wq->group)
|
|
continue;
|
|
|
|
if (wq->group->id == group->id)
|
|
rc += sysfs_emit_at(buf, rc, "wq%d.%d ", idxd->id, wq->id);
|
|
}
|
|
|
|
if (!rc)
|
|
return 0;
|
|
rc--;
|
|
rc += sysfs_emit_at(buf, rc, "\n");
|
|
|
|
return rc;
|
|
}
|
|
|
|
static struct device_attribute dev_attr_group_work_queues =
|
|
__ATTR(work_queues, 0444, group_work_queues_show, NULL);
|
|
|
|
static ssize_t group_traffic_class_a_show(struct device *dev,
|
|
struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
struct idxd_group *group = confdev_to_group(dev);
|
|
|
|
return sysfs_emit(buf, "%d\n", group->tc_a);
|
|
}
|
|
|
|
static ssize_t group_traffic_class_a_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
struct idxd_group *group = confdev_to_group(dev);
|
|
struct idxd_device *idxd = group->idxd;
|
|
long val;
|
|
int rc;
|
|
|
|
rc = kstrtol(buf, 10, &val);
|
|
if (rc < 0)
|
|
return -EINVAL;
|
|
|
|
if (!test_bit(IDXD_FLAG_CONFIGURABLE, &idxd->flags))
|
|
return -EPERM;
|
|
|
|
if (idxd->state == IDXD_DEV_ENABLED)
|
|
return -EPERM;
|
|
|
|
if (idxd->hw.version <= DEVICE_VERSION_2 && !tc_override)
|
|
return -EPERM;
|
|
|
|
if (val < 0 || val > 7)
|
|
return -EINVAL;
|
|
|
|
group->tc_a = val;
|
|
return count;
|
|
}
|
|
|
|
static struct device_attribute dev_attr_group_traffic_class_a =
|
|
__ATTR(traffic_class_a, 0644, group_traffic_class_a_show,
|
|
group_traffic_class_a_store);
|
|
|
|
static ssize_t group_traffic_class_b_show(struct device *dev,
|
|
struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
struct idxd_group *group = confdev_to_group(dev);
|
|
|
|
return sysfs_emit(buf, "%d\n", group->tc_b);
|
|
}
|
|
|
|
static ssize_t group_traffic_class_b_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
struct idxd_group *group = confdev_to_group(dev);
|
|
struct idxd_device *idxd = group->idxd;
|
|
long val;
|
|
int rc;
|
|
|
|
rc = kstrtol(buf, 10, &val);
|
|
if (rc < 0)
|
|
return -EINVAL;
|
|
|
|
if (!test_bit(IDXD_FLAG_CONFIGURABLE, &idxd->flags))
|
|
return -EPERM;
|
|
|
|
if (idxd->state == IDXD_DEV_ENABLED)
|
|
return -EPERM;
|
|
|
|
if (idxd->hw.version <= DEVICE_VERSION_2 && !tc_override)
|
|
return -EPERM;
|
|
|
|
if (val < 0 || val > 7)
|
|
return -EINVAL;
|
|
|
|
group->tc_b = val;
|
|
return count;
|
|
}
|
|
|
|
static struct device_attribute dev_attr_group_traffic_class_b =
|
|
__ATTR(traffic_class_b, 0644, group_traffic_class_b_show,
|
|
group_traffic_class_b_store);
|
|
|
|
static ssize_t group_desc_progress_limit_show(struct device *dev,
|
|
struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
struct idxd_group *group = confdev_to_group(dev);
|
|
|
|
return sysfs_emit(buf, "%d\n", group->desc_progress_limit);
|
|
}
|
|
|
|
static ssize_t group_desc_progress_limit_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
struct idxd_group *group = confdev_to_group(dev);
|
|
int val, rc;
|
|
|
|
rc = kstrtoint(buf, 10, &val);
|
|
if (rc < 0)
|
|
return -EINVAL;
|
|
|
|
if (val & ~GENMASK(1, 0))
|
|
return -EINVAL;
|
|
|
|
group->desc_progress_limit = val;
|
|
return count;
|
|
}
|
|
|
|
static struct device_attribute dev_attr_group_desc_progress_limit =
|
|
__ATTR(desc_progress_limit, 0644, group_desc_progress_limit_show,
|
|
group_desc_progress_limit_store);
|
|
|
|
static ssize_t group_batch_progress_limit_show(struct device *dev,
|
|
struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
struct idxd_group *group = confdev_to_group(dev);
|
|
|
|
return sysfs_emit(buf, "%d\n", group->batch_progress_limit);
|
|
}
|
|
|
|
static ssize_t group_batch_progress_limit_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
struct idxd_group *group = confdev_to_group(dev);
|
|
int val, rc;
|
|
|
|
rc = kstrtoint(buf, 10, &val);
|
|
if (rc < 0)
|
|
return -EINVAL;
|
|
|
|
if (val & ~GENMASK(1, 0))
|
|
return -EINVAL;
|
|
|
|
group->batch_progress_limit = val;
|
|
return count;
|
|
}
|
|
|
|
static struct device_attribute dev_attr_group_batch_progress_limit =
|
|
__ATTR(batch_progress_limit, 0644, group_batch_progress_limit_show,
|
|
group_batch_progress_limit_store);
|
|
static struct attribute *idxd_group_attributes[] = {
|
|
&dev_attr_group_work_queues.attr,
|
|
&dev_attr_group_engines.attr,
|
|
&dev_attr_group_use_token_limit.attr,
|
|
&dev_attr_group_use_read_buffer_limit.attr,
|
|
&dev_attr_group_tokens_allowed.attr,
|
|
&dev_attr_group_read_buffers_allowed.attr,
|
|
&dev_attr_group_tokens_reserved.attr,
|
|
&dev_attr_group_read_buffers_reserved.attr,
|
|
&dev_attr_group_traffic_class_a.attr,
|
|
&dev_attr_group_traffic_class_b.attr,
|
|
&dev_attr_group_desc_progress_limit.attr,
|
|
&dev_attr_group_batch_progress_limit.attr,
|
|
NULL,
|
|
};
|
|
|
|
static bool idxd_group_attr_progress_limit_invisible(struct attribute *attr,
|
|
struct idxd_device *idxd)
|
|
{
|
|
return (attr == &dev_attr_group_desc_progress_limit.attr ||
|
|
attr == &dev_attr_group_batch_progress_limit.attr) &&
|
|
!idxd->hw.group_cap.progress_limit;
|
|
}
|
|
|
|
static bool idxd_group_attr_read_buffers_invisible(struct attribute *attr,
|
|
struct idxd_device *idxd)
|
|
{
|
|
/*
|
|
* Intel IAA does not support Read Buffer allocation control,
|
|
* make these attributes invisible.
|
|
*/
|
|
return (attr == &dev_attr_group_use_token_limit.attr ||
|
|
attr == &dev_attr_group_use_read_buffer_limit.attr ||
|
|
attr == &dev_attr_group_tokens_allowed.attr ||
|
|
attr == &dev_attr_group_read_buffers_allowed.attr ||
|
|
attr == &dev_attr_group_tokens_reserved.attr ||
|
|
attr == &dev_attr_group_read_buffers_reserved.attr) &&
|
|
idxd->data->type == IDXD_TYPE_IAX;
|
|
}
|
|
|
|
static umode_t idxd_group_attr_visible(struct kobject *kobj,
|
|
struct attribute *attr, int n)
|
|
{
|
|
struct device *dev = container_of(kobj, struct device, kobj);
|
|
struct idxd_group *group = confdev_to_group(dev);
|
|
struct idxd_device *idxd = group->idxd;
|
|
|
|
if (idxd_group_attr_progress_limit_invisible(attr, idxd))
|
|
return 0;
|
|
|
|
if (idxd_group_attr_read_buffers_invisible(attr, idxd))
|
|
return 0;
|
|
|
|
return attr->mode;
|
|
}
|
|
|
|
static const struct attribute_group idxd_group_attribute_group = {
|
|
.attrs = idxd_group_attributes,
|
|
.is_visible = idxd_group_attr_visible,
|
|
};
|
|
|
|
static const struct attribute_group *idxd_group_attribute_groups[] = {
|
|
&idxd_group_attribute_group,
|
|
NULL,
|
|
};
|
|
|
|
static void idxd_conf_group_release(struct device *dev)
|
|
{
|
|
struct idxd_group *group = confdev_to_group(dev);
|
|
|
|
kfree(group);
|
|
}
|
|
|
|
struct device_type idxd_group_device_type = {
|
|
.name = "group",
|
|
.release = idxd_conf_group_release,
|
|
.groups = idxd_group_attribute_groups,
|
|
};
|
|
|
|
/* IDXD work queue attribs */
|
|
static ssize_t wq_clients_show(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct idxd_wq *wq = confdev_to_wq(dev);
|
|
|
|
return sysfs_emit(buf, "%d\n", wq->client_count);
|
|
}
|
|
|
|
static struct device_attribute dev_attr_wq_clients =
|
|
__ATTR(clients, 0444, wq_clients_show, NULL);
|
|
|
|
static ssize_t wq_state_show(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct idxd_wq *wq = confdev_to_wq(dev);
|
|
|
|
switch (wq->state) {
|
|
case IDXD_WQ_DISABLED:
|
|
return sysfs_emit(buf, "disabled\n");
|
|
case IDXD_WQ_ENABLED:
|
|
return sysfs_emit(buf, "enabled\n");
|
|
}
|
|
|
|
return sysfs_emit(buf, "unknown\n");
|
|
}
|
|
|
|
static struct device_attribute dev_attr_wq_state =
|
|
__ATTR(state, 0444, wq_state_show, NULL);
|
|
|
|
static ssize_t wq_group_id_show(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct idxd_wq *wq = confdev_to_wq(dev);
|
|
|
|
if (wq->group)
|
|
return sysfs_emit(buf, "%u\n", wq->group->id);
|
|
else
|
|
return sysfs_emit(buf, "-1\n");
|
|
}
|
|
|
|
static ssize_t wq_group_id_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
struct idxd_wq *wq = confdev_to_wq(dev);
|
|
struct idxd_device *idxd = wq->idxd;
|
|
long id;
|
|
int rc;
|
|
struct idxd_group *prevg, *group;
|
|
|
|
rc = kstrtol(buf, 10, &id);
|
|
if (rc < 0)
|
|
return -EINVAL;
|
|
|
|
if (!test_bit(IDXD_FLAG_CONFIGURABLE, &idxd->flags))
|
|
return -EPERM;
|
|
|
|
if (wq->state != IDXD_WQ_DISABLED)
|
|
return -EPERM;
|
|
|
|
if (id > idxd->max_groups - 1 || id < -1)
|
|
return -EINVAL;
|
|
|
|
if (id == -1) {
|
|
if (wq->group) {
|
|
wq->group->num_wqs--;
|
|
wq->group = NULL;
|
|
}
|
|
return count;
|
|
}
|
|
|
|
group = idxd->groups[id];
|
|
prevg = wq->group;
|
|
|
|
if (prevg)
|
|
prevg->num_wqs--;
|
|
wq->group = group;
|
|
group->num_wqs++;
|
|
return count;
|
|
}
|
|
|
|
static struct device_attribute dev_attr_wq_group_id =
|
|
__ATTR(group_id, 0644, wq_group_id_show, wq_group_id_store);
|
|
|
|
static ssize_t wq_mode_show(struct device *dev, struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
struct idxd_wq *wq = confdev_to_wq(dev);
|
|
|
|
return sysfs_emit(buf, "%s\n", wq_dedicated(wq) ? "dedicated" : "shared");
|
|
}
|
|
|
|
static ssize_t wq_mode_store(struct device *dev,
|
|
struct device_attribute *attr, const char *buf,
|
|
size_t count)
|
|
{
|
|
struct idxd_wq *wq = confdev_to_wq(dev);
|
|
struct idxd_device *idxd = wq->idxd;
|
|
|
|
if (!test_bit(IDXD_FLAG_CONFIGURABLE, &idxd->flags))
|
|
return -EPERM;
|
|
|
|
if (wq->state != IDXD_WQ_DISABLED)
|
|
return -EPERM;
|
|
|
|
if (sysfs_streq(buf, "dedicated")) {
|
|
set_bit(WQ_FLAG_DEDICATED, &wq->flags);
|
|
wq->threshold = 0;
|
|
} else if (sysfs_streq(buf, "shared")) {
|
|
clear_bit(WQ_FLAG_DEDICATED, &wq->flags);
|
|
} else {
|
|
return -EINVAL;
|
|
}
|
|
|
|
return count;
|
|
}
|
|
|
|
static struct device_attribute dev_attr_wq_mode =
|
|
__ATTR(mode, 0644, wq_mode_show, wq_mode_store);
|
|
|
|
static ssize_t wq_size_show(struct device *dev, struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
struct idxd_wq *wq = confdev_to_wq(dev);
|
|
|
|
return sysfs_emit(buf, "%u\n", wq->size);
|
|
}
|
|
|
|
static int total_claimed_wq_size(struct idxd_device *idxd)
|
|
{
|
|
int i;
|
|
int wq_size = 0;
|
|
|
|
for (i = 0; i < idxd->max_wqs; i++) {
|
|
struct idxd_wq *wq = idxd->wqs[i];
|
|
|
|
wq_size += wq->size;
|
|
}
|
|
|
|
return wq_size;
|
|
}
|
|
|
|
static ssize_t wq_size_store(struct device *dev,
|
|
struct device_attribute *attr, const char *buf,
|
|
size_t count)
|
|
{
|
|
struct idxd_wq *wq = confdev_to_wq(dev);
|
|
unsigned long size;
|
|
struct idxd_device *idxd = wq->idxd;
|
|
int rc;
|
|
|
|
rc = kstrtoul(buf, 10, &size);
|
|
if (rc < 0)
|
|
return -EINVAL;
|
|
|
|
if (!test_bit(IDXD_FLAG_CONFIGURABLE, &idxd->flags))
|
|
return -EPERM;
|
|
|
|
if (idxd->state == IDXD_DEV_ENABLED)
|
|
return -EPERM;
|
|
|
|
if (size + total_claimed_wq_size(idxd) - wq->size > idxd->max_wq_size)
|
|
return -EINVAL;
|
|
|
|
wq->size = size;
|
|
return count;
|
|
}
|
|
|
|
static struct device_attribute dev_attr_wq_size =
|
|
__ATTR(size, 0644, wq_size_show, wq_size_store);
|
|
|
|
static ssize_t wq_priority_show(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct idxd_wq *wq = confdev_to_wq(dev);
|
|
|
|
return sysfs_emit(buf, "%u\n", wq->priority);
|
|
}
|
|
|
|
static ssize_t wq_priority_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
struct idxd_wq *wq = confdev_to_wq(dev);
|
|
unsigned long prio;
|
|
struct idxd_device *idxd = wq->idxd;
|
|
int rc;
|
|
|
|
rc = kstrtoul(buf, 10, &prio);
|
|
if (rc < 0)
|
|
return -EINVAL;
|
|
|
|
if (!test_bit(IDXD_FLAG_CONFIGURABLE, &idxd->flags))
|
|
return -EPERM;
|
|
|
|
if (wq->state != IDXD_WQ_DISABLED)
|
|
return -EPERM;
|
|
|
|
if (prio > IDXD_MAX_PRIORITY)
|
|
return -EINVAL;
|
|
|
|
wq->priority = prio;
|
|
return count;
|
|
}
|
|
|
|
static struct device_attribute dev_attr_wq_priority =
|
|
__ATTR(priority, 0644, wq_priority_show, wq_priority_store);
|
|
|
|
static ssize_t wq_block_on_fault_show(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct idxd_wq *wq = confdev_to_wq(dev);
|
|
|
|
return sysfs_emit(buf, "%u\n", test_bit(WQ_FLAG_BLOCK_ON_FAULT, &wq->flags));
|
|
}
|
|
|
|
static ssize_t wq_block_on_fault_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
struct idxd_wq *wq = confdev_to_wq(dev);
|
|
struct idxd_device *idxd = wq->idxd;
|
|
bool bof;
|
|
int rc;
|
|
|
|
if (!idxd->hw.gen_cap.block_on_fault)
|
|
return -EOPNOTSUPP;
|
|
|
|
if (!test_bit(IDXD_FLAG_CONFIGURABLE, &idxd->flags))
|
|
return -EPERM;
|
|
|
|
if (wq->state != IDXD_WQ_DISABLED)
|
|
return -ENXIO;
|
|
|
|
rc = kstrtobool(buf, &bof);
|
|
if (rc < 0)
|
|
return rc;
|
|
|
|
if (bof)
|
|
set_bit(WQ_FLAG_BLOCK_ON_FAULT, &wq->flags);
|
|
else
|
|
clear_bit(WQ_FLAG_BLOCK_ON_FAULT, &wq->flags);
|
|
|
|
return count;
|
|
}
|
|
|
|
static struct device_attribute dev_attr_wq_block_on_fault =
|
|
__ATTR(block_on_fault, 0644, wq_block_on_fault_show,
|
|
wq_block_on_fault_store);
|
|
|
|
static ssize_t wq_threshold_show(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct idxd_wq *wq = confdev_to_wq(dev);
|
|
|
|
return sysfs_emit(buf, "%u\n", wq->threshold);
|
|
}
|
|
|
|
static ssize_t wq_threshold_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
struct idxd_wq *wq = confdev_to_wq(dev);
|
|
struct idxd_device *idxd = wq->idxd;
|
|
unsigned int val;
|
|
int rc;
|
|
|
|
rc = kstrtouint(buf, 0, &val);
|
|
if (rc < 0)
|
|
return -EINVAL;
|
|
|
|
if (val > wq->size || val <= 0)
|
|
return -EINVAL;
|
|
|
|
if (!test_bit(IDXD_FLAG_CONFIGURABLE, &idxd->flags))
|
|
return -EPERM;
|
|
|
|
if (wq->state != IDXD_WQ_DISABLED)
|
|
return -ENXIO;
|
|
|
|
if (test_bit(WQ_FLAG_DEDICATED, &wq->flags))
|
|
return -EINVAL;
|
|
|
|
wq->threshold = val;
|
|
|
|
return count;
|
|
}
|
|
|
|
static struct device_attribute dev_attr_wq_threshold =
|
|
__ATTR(threshold, 0644, wq_threshold_show, wq_threshold_store);
|
|
|
|
static ssize_t wq_type_show(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct idxd_wq *wq = confdev_to_wq(dev);
|
|
|
|
switch (wq->type) {
|
|
case IDXD_WQT_KERNEL:
|
|
return sysfs_emit(buf, "%s\n", idxd_wq_type_names[IDXD_WQT_KERNEL]);
|
|
case IDXD_WQT_USER:
|
|
return sysfs_emit(buf, "%s\n", idxd_wq_type_names[IDXD_WQT_USER]);
|
|
case IDXD_WQT_NONE:
|
|
default:
|
|
return sysfs_emit(buf, "%s\n", idxd_wq_type_names[IDXD_WQT_NONE]);
|
|
}
|
|
|
|
return -EINVAL;
|
|
}
|
|
|
|
static ssize_t wq_type_store(struct device *dev,
|
|
struct device_attribute *attr, const char *buf,
|
|
size_t count)
|
|
{
|
|
struct idxd_wq *wq = confdev_to_wq(dev);
|
|
enum idxd_wq_type old_type;
|
|
|
|
if (wq->state != IDXD_WQ_DISABLED)
|
|
return -EPERM;
|
|
|
|
old_type = wq->type;
|
|
if (sysfs_streq(buf, idxd_wq_type_names[IDXD_WQT_NONE]))
|
|
wq->type = IDXD_WQT_NONE;
|
|
else if (sysfs_streq(buf, idxd_wq_type_names[IDXD_WQT_KERNEL]))
|
|
wq->type = IDXD_WQT_KERNEL;
|
|
else if (sysfs_streq(buf, idxd_wq_type_names[IDXD_WQT_USER]))
|
|
wq->type = IDXD_WQT_USER;
|
|
else
|
|
return -EINVAL;
|
|
|
|
/* If we are changing queue type, clear the name */
|
|
if (wq->type != old_type)
|
|
memset(wq->name, 0, WQ_NAME_SIZE + 1);
|
|
|
|
return count;
|
|
}
|
|
|
|
static struct device_attribute dev_attr_wq_type =
|
|
__ATTR(type, 0644, wq_type_show, wq_type_store);
|
|
|
|
static ssize_t wq_name_show(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct idxd_wq *wq = confdev_to_wq(dev);
|
|
|
|
return sysfs_emit(buf, "%s\n", wq->name);
|
|
}
|
|
|
|
static ssize_t wq_name_store(struct device *dev,
|
|
struct device_attribute *attr, const char *buf,
|
|
size_t count)
|
|
{
|
|
struct idxd_wq *wq = confdev_to_wq(dev);
|
|
char *input, *pos;
|
|
|
|
if (wq->state != IDXD_WQ_DISABLED)
|
|
return -EPERM;
|
|
|
|
if (strlen(buf) > WQ_NAME_SIZE || strlen(buf) == 0)
|
|
return -EINVAL;
|
|
|
|
/*
|
|
* This is temporarily placed here until we have SVM support for
|
|
* dmaengine.
|
|
*/
|
|
if (wq->type == IDXD_WQT_KERNEL && device_pasid_enabled(wq->idxd))
|
|
return -EOPNOTSUPP;
|
|
|
|
input = kstrndup(buf, count, GFP_KERNEL);
|
|
if (!input)
|
|
return -ENOMEM;
|
|
|
|
pos = strim(input);
|
|
memset(wq->name, 0, WQ_NAME_SIZE + 1);
|
|
sprintf(wq->name, "%s", pos);
|
|
kfree(input);
|
|
return count;
|
|
}
|
|
|
|
static struct device_attribute dev_attr_wq_name =
|
|
__ATTR(name, 0644, wq_name_show, wq_name_store);
|
|
|
|
static ssize_t wq_cdev_minor_show(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct idxd_wq *wq = confdev_to_wq(dev);
|
|
int minor = -1;
|
|
|
|
mutex_lock(&wq->wq_lock);
|
|
if (wq->idxd_cdev)
|
|
minor = wq->idxd_cdev->minor;
|
|
mutex_unlock(&wq->wq_lock);
|
|
|
|
if (minor == -1)
|
|
return -ENXIO;
|
|
return sysfs_emit(buf, "%d\n", minor);
|
|
}
|
|
|
|
static struct device_attribute dev_attr_wq_cdev_minor =
|
|
__ATTR(cdev_minor, 0444, wq_cdev_minor_show, NULL);
|
|
|
|
static int __get_sysfs_u64(const char *buf, u64 *val)
|
|
{
|
|
int rc;
|
|
|
|
rc = kstrtou64(buf, 0, val);
|
|
if (rc < 0)
|
|
return -EINVAL;
|
|
|
|
if (*val == 0)
|
|
return -EINVAL;
|
|
|
|
*val = roundup_pow_of_two(*val);
|
|
return 0;
|
|
}
|
|
|
|
static ssize_t wq_max_transfer_size_show(struct device *dev, struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
struct idxd_wq *wq = confdev_to_wq(dev);
|
|
|
|
return sysfs_emit(buf, "%llu\n", wq->max_xfer_bytes);
|
|
}
|
|
|
|
static ssize_t wq_max_transfer_size_store(struct device *dev, struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
struct idxd_wq *wq = confdev_to_wq(dev);
|
|
struct idxd_device *idxd = wq->idxd;
|
|
u64 xfer_size;
|
|
int rc;
|
|
|
|
if (!test_bit(IDXD_FLAG_CONFIGURABLE, &idxd->flags))
|
|
return -EPERM;
|
|
|
|
if (wq->state != IDXD_WQ_DISABLED)
|
|
return -EPERM;
|
|
|
|
rc = __get_sysfs_u64(buf, &xfer_size);
|
|
if (rc < 0)
|
|
return rc;
|
|
|
|
if (xfer_size > idxd->max_xfer_bytes)
|
|
return -EINVAL;
|
|
|
|
wq->max_xfer_bytes = xfer_size;
|
|
|
|
return count;
|
|
}
|
|
|
|
static struct device_attribute dev_attr_wq_max_transfer_size =
|
|
__ATTR(max_transfer_size, 0644,
|
|
wq_max_transfer_size_show, wq_max_transfer_size_store);
|
|
|
|
static ssize_t wq_max_batch_size_show(struct device *dev, struct device_attribute *attr, char *buf)
|
|
{
|
|
struct idxd_wq *wq = confdev_to_wq(dev);
|
|
|
|
return sysfs_emit(buf, "%u\n", wq->max_batch_size);
|
|
}
|
|
|
|
static ssize_t wq_max_batch_size_store(struct device *dev, struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
struct idxd_wq *wq = confdev_to_wq(dev);
|
|
struct idxd_device *idxd = wq->idxd;
|
|
u64 batch_size;
|
|
int rc;
|
|
|
|
if (!test_bit(IDXD_FLAG_CONFIGURABLE, &idxd->flags))
|
|
return -EPERM;
|
|
|
|
if (wq->state != IDXD_WQ_DISABLED)
|
|
return -EPERM;
|
|
|
|
rc = __get_sysfs_u64(buf, &batch_size);
|
|
if (rc < 0)
|
|
return rc;
|
|
|
|
if (batch_size > idxd->max_batch_size)
|
|
return -EINVAL;
|
|
|
|
idxd_wq_set_max_batch_size(idxd->data->type, wq, (u32)batch_size);
|
|
|
|
return count;
|
|
}
|
|
|
|
static struct device_attribute dev_attr_wq_max_batch_size =
|
|
__ATTR(max_batch_size, 0644, wq_max_batch_size_show, wq_max_batch_size_store);
|
|
|
|
static ssize_t wq_ats_disable_show(struct device *dev, struct device_attribute *attr, char *buf)
|
|
{
|
|
struct idxd_wq *wq = confdev_to_wq(dev);
|
|
|
|
return sysfs_emit(buf, "%u\n", test_bit(WQ_FLAG_ATS_DISABLE, &wq->flags));
|
|
}
|
|
|
|
static ssize_t wq_ats_disable_store(struct device *dev, struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
struct idxd_wq *wq = confdev_to_wq(dev);
|
|
struct idxd_device *idxd = wq->idxd;
|
|
bool ats_dis;
|
|
int rc;
|
|
|
|
if (wq->state != IDXD_WQ_DISABLED)
|
|
return -EPERM;
|
|
|
|
if (!idxd->hw.wq_cap.wq_ats_support)
|
|
return -EOPNOTSUPP;
|
|
|
|
rc = kstrtobool(buf, &ats_dis);
|
|
if (rc < 0)
|
|
return rc;
|
|
|
|
if (ats_dis)
|
|
set_bit(WQ_FLAG_ATS_DISABLE, &wq->flags);
|
|
else
|
|
clear_bit(WQ_FLAG_ATS_DISABLE, &wq->flags);
|
|
|
|
return count;
|
|
}
|
|
|
|
static struct device_attribute dev_attr_wq_ats_disable =
|
|
__ATTR(ats_disable, 0644, wq_ats_disable_show, wq_ats_disable_store);
|
|
|
|
static ssize_t wq_occupancy_show(struct device *dev, struct device_attribute *attr, char *buf)
|
|
{
|
|
struct idxd_wq *wq = confdev_to_wq(dev);
|
|
struct idxd_device *idxd = wq->idxd;
|
|
u32 occup, offset;
|
|
|
|
if (!idxd->hw.wq_cap.occupancy)
|
|
return -EOPNOTSUPP;
|
|
|
|
offset = WQCFG_OFFSET(idxd, wq->id, WQCFG_OCCUP_IDX);
|
|
occup = ioread32(idxd->reg_base + offset) & WQCFG_OCCUP_MASK;
|
|
|
|
return sysfs_emit(buf, "%u\n", occup);
|
|
}
|
|
|
|
static struct device_attribute dev_attr_wq_occupancy =
|
|
__ATTR(occupancy, 0444, wq_occupancy_show, NULL);
|
|
|
|
static ssize_t wq_enqcmds_retries_show(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct idxd_wq *wq = confdev_to_wq(dev);
|
|
|
|
if (wq_dedicated(wq))
|
|
return -EOPNOTSUPP;
|
|
|
|
return sysfs_emit(buf, "%u\n", wq->enqcmds_retries);
|
|
}
|
|
|
|
static ssize_t wq_enqcmds_retries_store(struct device *dev, struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
struct idxd_wq *wq = confdev_to_wq(dev);
|
|
int rc;
|
|
unsigned int retries;
|
|
|
|
if (wq_dedicated(wq))
|
|
return -EOPNOTSUPP;
|
|
|
|
rc = kstrtouint(buf, 10, &retries);
|
|
if (rc < 0)
|
|
return rc;
|
|
|
|
if (retries > IDXD_ENQCMDS_MAX_RETRIES)
|
|
retries = IDXD_ENQCMDS_MAX_RETRIES;
|
|
|
|
wq->enqcmds_retries = retries;
|
|
return count;
|
|
}
|
|
|
|
static struct device_attribute dev_attr_wq_enqcmds_retries =
|
|
__ATTR(enqcmds_retries, 0644, wq_enqcmds_retries_show, wq_enqcmds_retries_store);
|
|
|
|
static ssize_t wq_op_config_show(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct idxd_wq *wq = confdev_to_wq(dev);
|
|
|
|
return sysfs_emit(buf, "%*pb\n", IDXD_MAX_OPCAP_BITS, wq->opcap_bmap);
|
|
}
|
|
|
|
static int idxd_verify_supported_opcap(struct idxd_device *idxd, unsigned long *opmask)
|
|
{
|
|
int bit;
|
|
|
|
/*
|
|
* The OPCAP is defined as 256 bits that represents each operation the device
|
|
* supports per bit. Iterate through all the bits and check if the input mask
|
|
* is set for bits that are not set in the OPCAP for the device. If no OPCAP
|
|
* bit is set and input mask has the bit set, then return error.
|
|
*/
|
|
for_each_set_bit(bit, opmask, IDXD_MAX_OPCAP_BITS) {
|
|
if (!test_bit(bit, idxd->opcap_bmap))
|
|
return -EINVAL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static ssize_t wq_op_config_store(struct device *dev, struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
struct idxd_wq *wq = confdev_to_wq(dev);
|
|
struct idxd_device *idxd = wq->idxd;
|
|
unsigned long *opmask;
|
|
int rc;
|
|
|
|
if (wq->state != IDXD_WQ_DISABLED)
|
|
return -EPERM;
|
|
|
|
opmask = bitmap_zalloc(IDXD_MAX_OPCAP_BITS, GFP_KERNEL);
|
|
if (!opmask)
|
|
return -ENOMEM;
|
|
|
|
rc = bitmap_parse(buf, count, opmask, IDXD_MAX_OPCAP_BITS);
|
|
if (rc < 0)
|
|
goto err;
|
|
|
|
rc = idxd_verify_supported_opcap(idxd, opmask);
|
|
if (rc < 0)
|
|
goto err;
|
|
|
|
bitmap_copy(wq->opcap_bmap, opmask, IDXD_MAX_OPCAP_BITS);
|
|
|
|
bitmap_free(opmask);
|
|
return count;
|
|
|
|
err:
|
|
bitmap_free(opmask);
|
|
return rc;
|
|
}
|
|
|
|
static struct device_attribute dev_attr_wq_op_config =
|
|
__ATTR(op_config, 0644, wq_op_config_show, wq_op_config_store);
|
|
|
|
static struct attribute *idxd_wq_attributes[] = {
|
|
&dev_attr_wq_clients.attr,
|
|
&dev_attr_wq_state.attr,
|
|
&dev_attr_wq_group_id.attr,
|
|
&dev_attr_wq_mode.attr,
|
|
&dev_attr_wq_size.attr,
|
|
&dev_attr_wq_priority.attr,
|
|
&dev_attr_wq_block_on_fault.attr,
|
|
&dev_attr_wq_threshold.attr,
|
|
&dev_attr_wq_type.attr,
|
|
&dev_attr_wq_name.attr,
|
|
&dev_attr_wq_cdev_minor.attr,
|
|
&dev_attr_wq_max_transfer_size.attr,
|
|
&dev_attr_wq_max_batch_size.attr,
|
|
&dev_attr_wq_ats_disable.attr,
|
|
&dev_attr_wq_occupancy.attr,
|
|
&dev_attr_wq_enqcmds_retries.attr,
|
|
&dev_attr_wq_op_config.attr,
|
|
NULL,
|
|
};
|
|
|
|
static bool idxd_wq_attr_op_config_invisible(struct attribute *attr,
|
|
struct idxd_device *idxd)
|
|
{
|
|
return attr == &dev_attr_wq_op_config.attr &&
|
|
!idxd->hw.wq_cap.op_config;
|
|
}
|
|
|
|
static bool idxd_wq_attr_max_batch_size_invisible(struct attribute *attr,
|
|
struct idxd_device *idxd)
|
|
{
|
|
/* Intel IAA does not support batch processing, make it invisible */
|
|
return attr == &dev_attr_wq_max_batch_size.attr &&
|
|
idxd->data->type == IDXD_TYPE_IAX;
|
|
}
|
|
|
|
static umode_t idxd_wq_attr_visible(struct kobject *kobj,
|
|
struct attribute *attr, int n)
|
|
{
|
|
struct device *dev = container_of(kobj, struct device, kobj);
|
|
struct idxd_wq *wq = confdev_to_wq(dev);
|
|
struct idxd_device *idxd = wq->idxd;
|
|
|
|
if (idxd_wq_attr_op_config_invisible(attr, idxd))
|
|
return 0;
|
|
|
|
if (idxd_wq_attr_max_batch_size_invisible(attr, idxd))
|
|
return 0;
|
|
|
|
return attr->mode;
|
|
}
|
|
|
|
static const struct attribute_group idxd_wq_attribute_group = {
|
|
.attrs = idxd_wq_attributes,
|
|
.is_visible = idxd_wq_attr_visible,
|
|
};
|
|
|
|
static const struct attribute_group *idxd_wq_attribute_groups[] = {
|
|
&idxd_wq_attribute_group,
|
|
NULL,
|
|
};
|
|
|
|
static void idxd_conf_wq_release(struct device *dev)
|
|
{
|
|
struct idxd_wq *wq = confdev_to_wq(dev);
|
|
|
|
bitmap_free(wq->opcap_bmap);
|
|
kfree(wq->wqcfg);
|
|
kfree(wq);
|
|
}
|
|
|
|
struct device_type idxd_wq_device_type = {
|
|
.name = "wq",
|
|
.release = idxd_conf_wq_release,
|
|
.groups = idxd_wq_attribute_groups,
|
|
};
|
|
|
|
/* IDXD device attribs */
|
|
static ssize_t version_show(struct device *dev, struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
struct idxd_device *idxd = confdev_to_idxd(dev);
|
|
|
|
return sysfs_emit(buf, "%#x\n", idxd->hw.version);
|
|
}
|
|
static DEVICE_ATTR_RO(version);
|
|
|
|
static ssize_t max_work_queues_size_show(struct device *dev,
|
|
struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
struct idxd_device *idxd = confdev_to_idxd(dev);
|
|
|
|
return sysfs_emit(buf, "%u\n", idxd->max_wq_size);
|
|
}
|
|
static DEVICE_ATTR_RO(max_work_queues_size);
|
|
|
|
static ssize_t max_groups_show(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct idxd_device *idxd = confdev_to_idxd(dev);
|
|
|
|
return sysfs_emit(buf, "%u\n", idxd->max_groups);
|
|
}
|
|
static DEVICE_ATTR_RO(max_groups);
|
|
|
|
static ssize_t max_work_queues_show(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct idxd_device *idxd = confdev_to_idxd(dev);
|
|
|
|
return sysfs_emit(buf, "%u\n", idxd->max_wqs);
|
|
}
|
|
static DEVICE_ATTR_RO(max_work_queues);
|
|
|
|
static ssize_t max_engines_show(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct idxd_device *idxd = confdev_to_idxd(dev);
|
|
|
|
return sysfs_emit(buf, "%u\n", idxd->max_engines);
|
|
}
|
|
static DEVICE_ATTR_RO(max_engines);
|
|
|
|
static ssize_t numa_node_show(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct idxd_device *idxd = confdev_to_idxd(dev);
|
|
|
|
return sysfs_emit(buf, "%d\n", dev_to_node(&idxd->pdev->dev));
|
|
}
|
|
static DEVICE_ATTR_RO(numa_node);
|
|
|
|
static ssize_t max_batch_size_show(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct idxd_device *idxd = confdev_to_idxd(dev);
|
|
|
|
return sysfs_emit(buf, "%u\n", idxd->max_batch_size);
|
|
}
|
|
static DEVICE_ATTR_RO(max_batch_size);
|
|
|
|
static ssize_t max_transfer_size_show(struct device *dev,
|
|
struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
struct idxd_device *idxd = confdev_to_idxd(dev);
|
|
|
|
return sysfs_emit(buf, "%llu\n", idxd->max_xfer_bytes);
|
|
}
|
|
static DEVICE_ATTR_RO(max_transfer_size);
|
|
|
|
static ssize_t op_cap_show(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct idxd_device *idxd = confdev_to_idxd(dev);
|
|
|
|
return sysfs_emit(buf, "%*pb\n", IDXD_MAX_OPCAP_BITS, idxd->opcap_bmap);
|
|
}
|
|
static DEVICE_ATTR_RO(op_cap);
|
|
|
|
static ssize_t gen_cap_show(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct idxd_device *idxd = confdev_to_idxd(dev);
|
|
|
|
return sysfs_emit(buf, "%#llx\n", idxd->hw.gen_cap.bits);
|
|
}
|
|
static DEVICE_ATTR_RO(gen_cap);
|
|
|
|
static ssize_t configurable_show(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct idxd_device *idxd = confdev_to_idxd(dev);
|
|
|
|
return sysfs_emit(buf, "%u\n", test_bit(IDXD_FLAG_CONFIGURABLE, &idxd->flags));
|
|
}
|
|
static DEVICE_ATTR_RO(configurable);
|
|
|
|
static ssize_t clients_show(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct idxd_device *idxd = confdev_to_idxd(dev);
|
|
int count = 0, i;
|
|
|
|
spin_lock(&idxd->dev_lock);
|
|
for (i = 0; i < idxd->max_wqs; i++) {
|
|
struct idxd_wq *wq = idxd->wqs[i];
|
|
|
|
count += wq->client_count;
|
|
}
|
|
spin_unlock(&idxd->dev_lock);
|
|
|
|
return sysfs_emit(buf, "%d\n", count);
|
|
}
|
|
static DEVICE_ATTR_RO(clients);
|
|
|
|
static ssize_t pasid_enabled_show(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct idxd_device *idxd = confdev_to_idxd(dev);
|
|
|
|
return sysfs_emit(buf, "%u\n", device_pasid_enabled(idxd));
|
|
}
|
|
static DEVICE_ATTR_RO(pasid_enabled);
|
|
|
|
static ssize_t state_show(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct idxd_device *idxd = confdev_to_idxd(dev);
|
|
|
|
switch (idxd->state) {
|
|
case IDXD_DEV_DISABLED:
|
|
return sysfs_emit(buf, "disabled\n");
|
|
case IDXD_DEV_ENABLED:
|
|
return sysfs_emit(buf, "enabled\n");
|
|
case IDXD_DEV_HALTED:
|
|
return sysfs_emit(buf, "halted\n");
|
|
}
|
|
|
|
return sysfs_emit(buf, "unknown\n");
|
|
}
|
|
static DEVICE_ATTR_RO(state);
|
|
|
|
static ssize_t errors_show(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct idxd_device *idxd = confdev_to_idxd(dev);
|
|
int i, out = 0;
|
|
|
|
spin_lock(&idxd->dev_lock);
|
|
for (i = 0; i < 4; i++)
|
|
out += sysfs_emit_at(buf, out, "%#018llx ", idxd->sw_err.bits[i]);
|
|
spin_unlock(&idxd->dev_lock);
|
|
out--;
|
|
out += sysfs_emit_at(buf, out, "\n");
|
|
return out;
|
|
}
|
|
static DEVICE_ATTR_RO(errors);
|
|
|
|
static ssize_t max_read_buffers_show(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct idxd_device *idxd = confdev_to_idxd(dev);
|
|
|
|
return sysfs_emit(buf, "%u\n", idxd->max_rdbufs);
|
|
}
|
|
|
|
static ssize_t max_tokens_show(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
dev_warn_once(dev, "attribute deprecated, see max_read_buffers.\n");
|
|
return max_read_buffers_show(dev, attr, buf);
|
|
}
|
|
|
|
static DEVICE_ATTR_RO(max_tokens); /* deprecated */
|
|
static DEVICE_ATTR_RO(max_read_buffers);
|
|
|
|
static ssize_t read_buffer_limit_show(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct idxd_device *idxd = confdev_to_idxd(dev);
|
|
|
|
return sysfs_emit(buf, "%u\n", idxd->rdbuf_limit);
|
|
}
|
|
|
|
static ssize_t token_limit_show(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
dev_warn_once(dev, "attribute deprecated, see read_buffer_limit.\n");
|
|
return read_buffer_limit_show(dev, attr, buf);
|
|
}
|
|
|
|
static ssize_t read_buffer_limit_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
struct idxd_device *idxd = confdev_to_idxd(dev);
|
|
unsigned long val;
|
|
int rc;
|
|
|
|
rc = kstrtoul(buf, 10, &val);
|
|
if (rc < 0)
|
|
return -EINVAL;
|
|
|
|
if (idxd->state == IDXD_DEV_ENABLED)
|
|
return -EPERM;
|
|
|
|
if (!test_bit(IDXD_FLAG_CONFIGURABLE, &idxd->flags))
|
|
return -EPERM;
|
|
|
|
if (!idxd->hw.group_cap.rdbuf_limit)
|
|
return -EPERM;
|
|
|
|
if (val > idxd->hw.group_cap.total_rdbufs)
|
|
return -EINVAL;
|
|
|
|
idxd->rdbuf_limit = val;
|
|
return count;
|
|
}
|
|
|
|
static ssize_t token_limit_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
dev_warn_once(dev, "attribute deprecated, see read_buffer_limit\n");
|
|
return read_buffer_limit_store(dev, attr, buf, count);
|
|
}
|
|
|
|
static DEVICE_ATTR_RW(token_limit); /* deprecated */
|
|
static DEVICE_ATTR_RW(read_buffer_limit);
|
|
|
|
static ssize_t cdev_major_show(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct idxd_device *idxd = confdev_to_idxd(dev);
|
|
|
|
return sysfs_emit(buf, "%u\n", idxd->major);
|
|
}
|
|
static DEVICE_ATTR_RO(cdev_major);
|
|
|
|
static ssize_t cmd_status_show(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct idxd_device *idxd = confdev_to_idxd(dev);
|
|
|
|
return sysfs_emit(buf, "%#x\n", idxd->cmd_status);
|
|
}
|
|
|
|
static ssize_t cmd_status_store(struct device *dev, struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
struct idxd_device *idxd = confdev_to_idxd(dev);
|
|
|
|
idxd->cmd_status = 0;
|
|
return count;
|
|
}
|
|
static DEVICE_ATTR_RW(cmd_status);
|
|
|
|
static bool idxd_device_attr_max_batch_size_invisible(struct attribute *attr,
|
|
struct idxd_device *idxd)
|
|
{
|
|
/* Intel IAA does not support batch processing, make it invisible */
|
|
return attr == &dev_attr_max_batch_size.attr &&
|
|
idxd->data->type == IDXD_TYPE_IAX;
|
|
}
|
|
|
|
static bool idxd_device_attr_read_buffers_invisible(struct attribute *attr,
|
|
struct idxd_device *idxd)
|
|
{
|
|
/*
|
|
* Intel IAA does not support Read Buffer allocation control,
|
|
* make these attributes invisible.
|
|
*/
|
|
return (attr == &dev_attr_max_tokens.attr ||
|
|
attr == &dev_attr_max_read_buffers.attr ||
|
|
attr == &dev_attr_token_limit.attr ||
|
|
attr == &dev_attr_read_buffer_limit.attr) &&
|
|
idxd->data->type == IDXD_TYPE_IAX;
|
|
}
|
|
|
|
static umode_t idxd_device_attr_visible(struct kobject *kobj,
|
|
struct attribute *attr, int n)
|
|
{
|
|
struct device *dev = container_of(kobj, struct device, kobj);
|
|
struct idxd_device *idxd = confdev_to_idxd(dev);
|
|
|
|
if (idxd_device_attr_max_batch_size_invisible(attr, idxd))
|
|
return 0;
|
|
|
|
if (idxd_device_attr_read_buffers_invisible(attr, idxd))
|
|
return 0;
|
|
|
|
return attr->mode;
|
|
}
|
|
|
|
static struct attribute *idxd_device_attributes[] = {
|
|
&dev_attr_version.attr,
|
|
&dev_attr_max_groups.attr,
|
|
&dev_attr_max_work_queues.attr,
|
|
&dev_attr_max_work_queues_size.attr,
|
|
&dev_attr_max_engines.attr,
|
|
&dev_attr_numa_node.attr,
|
|
&dev_attr_max_batch_size.attr,
|
|
&dev_attr_max_transfer_size.attr,
|
|
&dev_attr_op_cap.attr,
|
|
&dev_attr_gen_cap.attr,
|
|
&dev_attr_configurable.attr,
|
|
&dev_attr_clients.attr,
|
|
&dev_attr_pasid_enabled.attr,
|
|
&dev_attr_state.attr,
|
|
&dev_attr_errors.attr,
|
|
&dev_attr_max_tokens.attr,
|
|
&dev_attr_max_read_buffers.attr,
|
|
&dev_attr_token_limit.attr,
|
|
&dev_attr_read_buffer_limit.attr,
|
|
&dev_attr_cdev_major.attr,
|
|
&dev_attr_cmd_status.attr,
|
|
NULL,
|
|
};
|
|
|
|
static const struct attribute_group idxd_device_attribute_group = {
|
|
.attrs = idxd_device_attributes,
|
|
.is_visible = idxd_device_attr_visible,
|
|
};
|
|
|
|
static const struct attribute_group *idxd_attribute_groups[] = {
|
|
&idxd_device_attribute_group,
|
|
NULL,
|
|
};
|
|
|
|
static void idxd_conf_device_release(struct device *dev)
|
|
{
|
|
struct idxd_device *idxd = confdev_to_idxd(dev);
|
|
|
|
kfree(idxd->groups);
|
|
bitmap_free(idxd->wq_enable_map);
|
|
kfree(idxd->wqs);
|
|
kfree(idxd->engines);
|
|
ida_free(&idxd_ida, idxd->id);
|
|
bitmap_free(idxd->opcap_bmap);
|
|
kfree(idxd);
|
|
}
|
|
|
|
struct device_type dsa_device_type = {
|
|
.name = "dsa",
|
|
.release = idxd_conf_device_release,
|
|
.groups = idxd_attribute_groups,
|
|
};
|
|
|
|
struct device_type iax_device_type = {
|
|
.name = "iax",
|
|
.release = idxd_conf_device_release,
|
|
.groups = idxd_attribute_groups,
|
|
};
|
|
|
|
static int idxd_register_engine_devices(struct idxd_device *idxd)
|
|
{
|
|
struct idxd_engine *engine;
|
|
int i, j, rc;
|
|
|
|
for (i = 0; i < idxd->max_engines; i++) {
|
|
engine = idxd->engines[i];
|
|
rc = device_add(engine_confdev(engine));
|
|
if (rc < 0)
|
|
goto cleanup;
|
|
}
|
|
|
|
return 0;
|
|
|
|
cleanup:
|
|
j = i - 1;
|
|
for (; i < idxd->max_engines; i++) {
|
|
engine = idxd->engines[i];
|
|
put_device(engine_confdev(engine));
|
|
}
|
|
|
|
while (j--) {
|
|
engine = idxd->engines[j];
|
|
device_unregister(engine_confdev(engine));
|
|
}
|
|
return rc;
|
|
}
|
|
|
|
static int idxd_register_group_devices(struct idxd_device *idxd)
|
|
{
|
|
struct idxd_group *group;
|
|
int i, j, rc;
|
|
|
|
for (i = 0; i < idxd->max_groups; i++) {
|
|
group = idxd->groups[i];
|
|
rc = device_add(group_confdev(group));
|
|
if (rc < 0)
|
|
goto cleanup;
|
|
}
|
|
|
|
return 0;
|
|
|
|
cleanup:
|
|
j = i - 1;
|
|
for (; i < idxd->max_groups; i++) {
|
|
group = idxd->groups[i];
|
|
put_device(group_confdev(group));
|
|
}
|
|
|
|
while (j--) {
|
|
group = idxd->groups[j];
|
|
device_unregister(group_confdev(group));
|
|
}
|
|
return rc;
|
|
}
|
|
|
|
static int idxd_register_wq_devices(struct idxd_device *idxd)
|
|
{
|
|
struct idxd_wq *wq;
|
|
int i, rc, j;
|
|
|
|
for (i = 0; i < idxd->max_wqs; i++) {
|
|
wq = idxd->wqs[i];
|
|
rc = device_add(wq_confdev(wq));
|
|
if (rc < 0)
|
|
goto cleanup;
|
|
}
|
|
|
|
return 0;
|
|
|
|
cleanup:
|
|
j = i - 1;
|
|
for (; i < idxd->max_wqs; i++) {
|
|
wq = idxd->wqs[i];
|
|
put_device(wq_confdev(wq));
|
|
}
|
|
|
|
while (j--) {
|
|
wq = idxd->wqs[j];
|
|
device_unregister(wq_confdev(wq));
|
|
}
|
|
return rc;
|
|
}
|
|
|
|
int idxd_register_devices(struct idxd_device *idxd)
|
|
{
|
|
struct device *dev = &idxd->pdev->dev;
|
|
int rc, i;
|
|
|
|
rc = device_add(idxd_confdev(idxd));
|
|
if (rc < 0)
|
|
return rc;
|
|
|
|
rc = idxd_register_wq_devices(idxd);
|
|
if (rc < 0) {
|
|
dev_dbg(dev, "WQ devices registering failed: %d\n", rc);
|
|
goto err_wq;
|
|
}
|
|
|
|
rc = idxd_register_engine_devices(idxd);
|
|
if (rc < 0) {
|
|
dev_dbg(dev, "Engine devices registering failed: %d\n", rc);
|
|
goto err_engine;
|
|
}
|
|
|
|
rc = idxd_register_group_devices(idxd);
|
|
if (rc < 0) {
|
|
dev_dbg(dev, "Group device registering failed: %d\n", rc);
|
|
goto err_group;
|
|
}
|
|
|
|
return 0;
|
|
|
|
err_group:
|
|
for (i = 0; i < idxd->max_engines; i++)
|
|
device_unregister(engine_confdev(idxd->engines[i]));
|
|
err_engine:
|
|
for (i = 0; i < idxd->max_wqs; i++)
|
|
device_unregister(wq_confdev(idxd->wqs[i]));
|
|
err_wq:
|
|
device_del(idxd_confdev(idxd));
|
|
return rc;
|
|
}
|
|
|
|
void idxd_unregister_devices(struct idxd_device *idxd)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < idxd->max_wqs; i++) {
|
|
struct idxd_wq *wq = idxd->wqs[i];
|
|
|
|
device_unregister(wq_confdev(wq));
|
|
}
|
|
|
|
for (i = 0; i < idxd->max_engines; i++) {
|
|
struct idxd_engine *engine = idxd->engines[i];
|
|
|
|
device_unregister(engine_confdev(engine));
|
|
}
|
|
|
|
for (i = 0; i < idxd->max_groups; i++) {
|
|
struct idxd_group *group = idxd->groups[i];
|
|
|
|
device_unregister(group_confdev(group));
|
|
}
|
|
}
|
|
|
|
int idxd_register_bus_type(void)
|
|
{
|
|
return bus_register(&dsa_bus_type);
|
|
}
|
|
|
|
void idxd_unregister_bus_type(void)
|
|
{
|
|
bus_unregister(&dsa_bus_type);
|
|
}
|