| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Dave Jiang | 8486 | 96.70% | 44 | 89.80% |
| Xiaochen Shen | 276 | 3.14% | 3 | 6.12% |
| Tom Zanussi | 7 | 0.08% | 1 | 2.04% |
| Gerard Snitselaar | 7 | 0.08% | 1 | 2.04% |
| Total | 8776 | 49 |
// 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); }
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