diff options
Diffstat (limited to '')
| -rw-r--r-- | drivers/dma/idxd/sysfs.c | 189 |
1 files changed, 179 insertions, 10 deletions
diff --git a/drivers/dma/idxd/sysfs.c b/drivers/dma/idxd/sysfs.c index 3f262a57441b..7269bd54554f 100644 --- a/drivers/dma/idxd/sysfs.c +++ b/drivers/dma/idxd/sysfs.c @@ -443,6 +443,67 @@ 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, @@ -454,11 +515,35 @@ static struct attribute *idxd_group_attributes[] = { &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 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; + + 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[] = { @@ -961,7 +1046,7 @@ static ssize_t wq_max_batch_size_store(struct device *dev, struct device_attribu if (batch_size > idxd->max_batch_size) return -EINVAL; - wq->max_batch_size = (u32)batch_size; + idxd_wq_set_max_batch_size(idxd->data->type, wq, (u32)batch_size); return count; } @@ -973,7 +1058,7 @@ static ssize_t wq_ats_disable_show(struct device *dev, struct device_attribute * { struct idxd_wq *wq = confdev_to_wq(dev); - return sysfs_emit(buf, "%u\n", wq->ats_dis); + 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, @@ -994,7 +1079,10 @@ static ssize_t wq_ats_disable_store(struct device *dev, struct device_attribute if (rc < 0) return rc; - wq->ats_dis = ats_dis; + if (ats_dis) + set_bit(WQ_FLAG_ATS_DISABLE, &wq->flags); + else + clear_bit(WQ_FLAG_ATS_DISABLE, &wq->flags); return count; } @@ -1055,6 +1143,68 @@ static ssize_t wq_enqcmds_retries_store(struct device *dev, struct device_attrib 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, @@ -1072,11 +1222,33 @@ static struct attribute *idxd_wq_attributes[] = { &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 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; + + 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[] = { @@ -1088,6 +1260,7 @@ 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); } @@ -1177,14 +1350,8 @@ static ssize_t op_cap_show(struct device *dev, struct device_attribute *attr, char *buf) { struct idxd_device *idxd = confdev_to_idxd(dev); - int i, rc = 0; - - for (i = 0; i < 4; i++) - rc += sysfs_emit_at(buf, rc, "%#llx ", idxd->hw.opcap.bits[i]); - rc--; - rc += sysfs_emit_at(buf, rc, "\n"); - return rc; + return sysfs_emit(buf, "%*pb\n", IDXD_MAX_OPCAP_BITS, idxd->opcap_bmap); } static DEVICE_ATTR_RO(op_cap); @@ -1405,9 +1572,11 @@ 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); } |