// SPDX-License-Identifier: GPL-2.0 /* * zfcp device driver * * sysfs attributes. * * Copyright IBM Corp. 2008, 2010 */ #define KMSG_COMPONENT "zfcp" #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt #include <linux/slab.h> #include "zfcp_ext.h" #define ZFCP_DEV_ATTR(_feat, _name, _mode, _show, _store) \ struct device_attribute dev_attr_##_feat##_##_name = __ATTR(_name, _mode,\ _show, _store) #define ZFCP_DEFINE_ATTR(_feat_def, _feat, _name, _format, _value) \ static ssize_t zfcp_sysfs_##_feat##_##_name##_show(struct device *dev, \ struct device_attribute *at,\ char *buf) \ { \ struct _feat_def *_feat = container_of(dev, struct _feat_def, dev); \ \ return sprintf(buf, _format, _value); \ } \ static ZFCP_DEV_ATTR(_feat, _name, S_IRUGO, \ zfcp_sysfs_##_feat##_##_name##_show, NULL); #define ZFCP_DEFINE_ATTR_CONST(_feat, _name, _format, _value) \ static ssize_t zfcp_sysfs_##_feat##_##_name##_show(struct device *dev, \ struct device_attribute *at,\ char *buf) \ { \ return sprintf(buf, _format, _value); \ } \ static ZFCP_DEV_ATTR(_feat, _name, S_IRUGO, \ zfcp_sysfs_##_feat##_##_name##_show, NULL); #define ZFCP_DEFINE_A_ATTR(_name, _format, _value) \ static ssize_t zfcp_sysfs_adapter_##_name##_show(struct device *dev, \ struct device_attribute *at,\ char *buf) \ { \ struct ccw_device *cdev = to_ccwdev(dev); \ struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev); \ int i; \ \ if (!adapter) \ return -ENODEV; \ \ i = sprintf(buf, _format, _value); \ zfcp_ccw_adapter_put(adapter); \ return i; \ } \ static ZFCP_DEV_ATTR(adapter, _name, S_IRUGO, \ zfcp_sysfs_adapter_##_name##_show, NULL); ZFCP_DEFINE_A_ATTR(status, "0x%08x\n", atomic_read(&adapter->status)); ZFCP_DEFINE_A_ATTR(peer_wwnn, "0x%016llx\n", (unsigned long long) adapter->peer_wwnn); ZFCP_DEFINE_A_ATTR(peer_wwpn, "0x%016llx\n", (unsigned long long) adapter->peer_wwpn); ZFCP_DEFINE_A_ATTR(peer_d_id, "0x%06x\n", adapter->peer_d_id); ZFCP_DEFINE_A_ATTR(card_version, "0x%04x\n", adapter->hydra_version); ZFCP_DEFINE_A_ATTR(lic_version, "0x%08x\n", adapter->fsf_lic_version); ZFCP_DEFINE_A_ATTR(hardware_version, "0x%08x\n", adapter->hardware_version); ZFCP_DEFINE_A_ATTR(in_recovery, "%d\n", (atomic_read(&adapter->status) & ZFCP_STATUS_COMMON_ERP_INUSE) != 0); ZFCP_DEFINE_ATTR(zfcp_port, port, status, "0x%08x\n", atomic_read(&port->status)); ZFCP_DEFINE_ATTR(zfcp_port, port, in_recovery, "%d\n", (atomic_read(&port->status) & ZFCP_STATUS_COMMON_ERP_INUSE) != 0); ZFCP_DEFINE_ATTR_CONST(port, access_denied, "%d\n", 0); ZFCP_DEFINE_ATTR(zfcp_unit, unit, status, "0x%08x\n", zfcp_unit_sdev_status(unit)); ZFCP_DEFINE_ATTR(zfcp_unit, unit, in_recovery, "%d\n", (zfcp_unit_sdev_status(unit) & ZFCP_STATUS_COMMON_ERP_INUSE) != 0); ZFCP_DEFINE_ATTR(zfcp_unit, unit, access_denied, "%d\n", (zfcp_unit_sdev_status(unit) & ZFCP_STATUS_COMMON_ACCESS_DENIED) != 0); ZFCP_DEFINE_ATTR_CONST(unit, access_shared, "%d\n", 0); ZFCP_DEFINE_ATTR_CONST(unit, access_readonly, "%d\n", 0); static ssize_t zfcp_sysfs_port_failed_show(struct device *dev, struct device_attribute *attr, char *buf) { struct zfcp_port *port = container_of(dev, struct zfcp_port, dev); if (atomic_read(&port->status) & ZFCP_STATUS_COMMON_ERP_FAILED) return sprintf(buf, "1\n"); return sprintf(buf, "0\n"); } static ssize_t zfcp_sysfs_port_failed_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct zfcp_port *port = container_of(dev, struct zfcp_port, dev); unsigned long val; if (kstrtoul(buf, 0, &val) || val != 0) return -EINVAL; zfcp_erp_set_port_status(port, ZFCP_STATUS_COMMON_RUNNING); zfcp_erp_port_reopen(port, ZFCP_STATUS_COMMON_ERP_FAILED, "sypfai2"); zfcp_erp_wait(port->adapter); return count; } static ZFCP_DEV_ATTR(port, failed, S_IWUSR | S_IRUGO, zfcp_sysfs_port_failed_show, zfcp_sysfs_port_failed_store); static ssize_t zfcp_sysfs_unit_failed_show(struct device *dev, struct device_attribute *attr, char *buf) { struct zfcp_unit *unit = container_of(dev, struct zfcp_unit, dev); struct scsi_device *sdev; unsigned int status, failed = 1; sdev = zfcp_unit_sdev(unit); if (sdev) { status = atomic_read(&sdev_to_zfcp(sdev)->status); failed = status & ZFCP_STATUS_COMMON_ERP_FAILED ? 1 : 0; scsi_device_put(sdev); } return sprintf(buf, "%d\n", failed); } static ssize_t zfcp_sysfs_unit_failed_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct zfcp_unit *unit = container_of(dev, struct zfcp_unit, dev); unsigned long val; struct scsi_device *sdev; if (kstrtoul(buf, 0, &val) || val != 0) return -EINVAL; sdev = zfcp_unit_sdev(unit); if (sdev) { zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_RUNNING); zfcp_erp_lun_reopen(sdev, ZFCP_STATUS_COMMON_ERP_FAILED, "syufai2"); zfcp_erp_wait(unit->port->adapter); } else zfcp_unit_scsi_scan(unit); return count; } static ZFCP_DEV_ATTR(unit, failed, S_IWUSR | S_IRUGO, zfcp_sysfs_unit_failed_show, zfcp_sysfs_unit_failed_store); static ssize_t zfcp_sysfs_adapter_failed_show(struct device *dev, struct device_attribute *attr, char *buf) { struct ccw_device *cdev = to_ccwdev(dev); struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev); int i; if (!adapter) return -ENODEV; if (atomic_read(&adapter->status) & ZFCP_STATUS_COMMON_ERP_FAILED) i = sprintf(buf, "1\n"); else i = sprintf(buf, "0\n"); zfcp_ccw_adapter_put(adapter); return i; } static ssize_t zfcp_sysfs_adapter_failed_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct ccw_device *cdev = to_ccwdev(dev); struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev); unsigned long val; int retval = 0; if (!adapter) return -ENODEV; if (kstrtoul(buf, 0, &val) || val != 0) { retval = -EINVAL; goto out; } zfcp_erp_adapter_reset_sync(adapter, "syafai2"); out: zfcp_ccw_adapter_put(adapter); return retval ? retval : (ssize_t) count; } static ZFCP_DEV_ATTR(adapter, failed, S_IWUSR | S_IRUGO, zfcp_sysfs_adapter_failed_show, zfcp_sysfs_adapter_failed_store); static ssize_t zfcp_sysfs_port_rescan_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct ccw_device *cdev = to_ccwdev(dev); struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev); if (!adapter) return -ENODEV; /* * Users wish is our command: immediately schedule and flush a * worker to conduct a synchronous port scan, that is, neither * a random delay nor a rate limit is applied here. */ queue_delayed_work(adapter->work_queue, &adapter->scan_work, 0); flush_delayed_work(&adapter->scan_work); zfcp_ccw_adapter_put(adapter); return (ssize_t) count; } static ZFCP_DEV_ATTR(adapter, port_rescan, S_IWUSR, NULL, zfcp_sysfs_port_rescan_store); DEFINE_MUTEX(zfcp_sysfs_port_units_mutex); static ssize_t zfcp_sysfs_port_remove_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct ccw_device *cdev = to_ccwdev(dev); struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev); struct zfcp_port *port; u64 wwpn; int retval = -EINVAL; if (!adapter) return -ENODEV; if (kstrtoull(buf, 0, (unsigned long long *) &wwpn)) goto out; port = zfcp_get_port_by_wwpn(adapter, wwpn); if (!port) goto out; else retval = 0; mutex_lock(&zfcp_sysfs_port_units_mutex); if (atomic_read(&port->units) > 0) { retval = -EBUSY; mutex_unlock(&zfcp_sysfs_port_units_mutex); goto out; } /* port is about to be removed, so no more unit_add */ atomic_set(&port->units, -1); mutex_unlock(&zfcp_sysfs_port_units_mutex); write_lock_irq(&adapter->port_list_lock); list_del(&port->list); write_unlock_irq(&adapter->port_list_lock); put_device(&port->dev); zfcp_erp_port_shutdown(port, 0, "syprs_1"); device_unregister(&port->dev); out: zfcp_ccw_adapter_put(adapter); return retval ? retval : (ssize_t) count; } static ZFCP_DEV_ATTR(adapter, port_remove, S_IWUSR, NULL, zfcp_sysfs_port_remove_store); static struct attribute *zfcp_adapter_attrs[] = { &dev_attr_adapter_failed.attr, &dev_attr_adapter_in_recovery.attr, &dev_attr_adapter_port_remove.attr, &dev_attr_adapter_port_rescan.attr, &dev_attr_adapter_peer_wwnn.attr, &dev_attr_adapter_peer_wwpn.attr, &dev_attr_adapter_peer_d_id.attr, &dev_attr_adapter_card_version.attr, &dev_attr_adapter_lic_version.attr, &dev_attr_adapter_status.attr, &dev_attr_adapter_hardware_version.attr, NULL }; struct attribute_group zfcp_sysfs_adapter_attrs = { .attrs = zfcp_adapter_attrs, }; static ssize_t zfcp_sysfs_unit_add_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct zfcp_port *port = container_of(dev, struct zfcp_port, dev); u64 fcp_lun; int retval; if (kstrtoull(buf, 0, (unsigned long long *) &fcp_lun)) return -EINVAL; retval = zfcp_unit_add(port, fcp_lun); if (retval) return retval; return count; } static DEVICE_ATTR(unit_add, S_IWUSR, NULL, zfcp_sysfs_unit_add_store); static ssize_t zfcp_sysfs_unit_remove_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct zfcp_port *port = container_of(dev, struct zfcp_port, dev); u64 fcp_lun; if (kstrtoull(buf, 0, (unsigned long long *) &fcp_lun)) return -EINVAL; if (zfcp_unit_remove(port, fcp_lun)) return -EINVAL; return count; } static DEVICE_ATTR(unit_remove, S_IWUSR, NULL, zfcp_sysfs_unit_remove_store); static struct attribute *zfcp_port_attrs[] = { &dev_attr_unit_add.attr, &dev_attr_unit_remove.attr, &dev_attr_port_failed.attr, &dev_attr_port_in_recovery.attr, &dev_attr_port_status.attr, &dev_attr_port_access_denied.attr, NULL }; static struct attribute_group zfcp_port_attr_group = { .attrs = zfcp_port_attrs, }; const struct attribute_group *zfcp_port_attr_groups[] = { &zfcp_port_attr_group, NULL, }; static struct attribute *zfcp_unit_attrs[] = { &dev_attr_unit_failed.attr, &dev_attr_unit_in_recovery.attr, &dev_attr_unit_status.attr, &dev_attr_unit_access_denied.attr, &dev_attr_unit_access_shared.attr, &dev_attr_unit_access_readonly.attr, NULL }; static struct attribute_group zfcp_unit_attr_group = { .attrs = zfcp_unit_attrs, }; const struct attribute_group *zfcp_unit_attr_groups[] = { &zfcp_unit_attr_group, NULL, }; #define ZFCP_DEFINE_LATENCY_ATTR(_name) \ static ssize_t \ zfcp_sysfs_unit_##_name##_latency_show(struct device *dev, \ struct device_attribute *attr, \ char *buf) { \ struct scsi_device *sdev = to_scsi_device(dev); \ struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); \ struct zfcp_latencies *lat = &zfcp_sdev->latencies; \ struct zfcp_adapter *adapter = zfcp_sdev->port->adapter; \ unsigned long long fsum, fmin, fmax, csum, cmin, cmax, cc; \ \ spin_lock_bh(&lat->lock); \ fsum = lat->_name.fabric.sum * adapter->timer_ticks; \ fmin = lat->_name.fabric.min * adapter->timer_ticks; \ fmax = lat->_name.fabric.max * adapter->timer_ticks; \ csum = lat->_name.channel.sum * adapter->timer_ticks; \ cmin = lat->_name.channel.min * adapter->timer_ticks; \ cmax = lat->_name.channel.max * adapter->timer_ticks; \ cc = lat->_name.counter; \ spin_unlock_bh(&lat->lock); \ \ do_div(fsum, 1000); \ do_div(fmin, 1000); \ do_div(fmax, 1000); \ do_div(csum, 1000); \ do_div(cmin, 1000); \ do_div(cmax, 1000); \ \ return sprintf(buf, "%llu %llu %llu %llu %llu %llu %llu\n", \ fmin, fmax, fsum, cmin, cmax, csum, cc); \ } \ static ssize_t \ zfcp_sysfs_unit_##_name##_latency_store(struct device *dev, \ struct device_attribute *attr, \ const char *buf, size_t count) \ { \ struct scsi_device *sdev = to_scsi_device(dev); \ struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); \ struct zfcp_latencies *lat = &zfcp_sdev->latencies; \ unsigned long flags; \ \ spin_lock_irqsave(&lat->lock, flags); \ lat->_name.fabric.sum = 0; \ lat->_name.fabric.min = 0xFFFFFFFF; \ lat->_name.fabric.max = 0; \ lat->_name.channel.sum = 0; \ lat->_name.channel.min = 0xFFFFFFFF; \ lat->_name.channel.max = 0; \ lat->_name.counter = 0; \ spin_unlock_irqrestore(&lat->lock, flags); \ \ return (ssize_t) count; \ } \ static DEVICE_ATTR(_name##_latency, S_IWUSR | S_IRUGO, \ zfcp_sysfs_unit_##_name##_latency_show, \ zfcp_sysfs_unit_##_name##_latency_store); ZFCP_DEFINE_LATENCY_ATTR(read); ZFCP_DEFINE_LATENCY_ATTR(write); ZFCP_DEFINE_LATENCY_ATTR(cmd); #define ZFCP_DEFINE_SCSI_ATTR(_name, _format, _value) \ static ssize_t zfcp_sysfs_scsi_##_name##_show(struct device *dev, \ struct device_attribute *attr,\ char *buf) \ { \ struct scsi_device *sdev = to_scsi_device(dev); \ struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); \ \ return sprintf(buf, _format, _value); \ } \ static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_scsi_##_name##_show, NULL); ZFCP_DEFINE_SCSI_ATTR(hba_id, "%s\n", dev_name(&zfcp_sdev->port->adapter->ccw_device->dev)); ZFCP_DEFINE_SCSI_ATTR(wwpn, "0x%016llx\n", (unsigned long long) zfcp_sdev->port->wwpn); static ssize_t zfcp_sysfs_scsi_fcp_lun_show(struct device *dev, struct device_attribute *attr, char *buf) { struct scsi_device *sdev = to_scsi_device(dev); return sprintf(buf, "0x%016llx\n", zfcp_scsi_dev_lun(sdev)); } static DEVICE_ATTR(fcp_lun, S_IRUGO, zfcp_sysfs_scsi_fcp_lun_show, NULL); ZFCP_DEFINE_SCSI_ATTR(zfcp_access_denied, "%d\n", (atomic_read(&zfcp_sdev->status) & ZFCP_STATUS_COMMON_ACCESS_DENIED) != 0); static ssize_t zfcp_sysfs_scsi_zfcp_failed_show(struct device *dev, struct device_attribute *attr, char *buf) { struct scsi_device *sdev = to_scsi_device(dev); unsigned int status = atomic_read(&sdev_to_zfcp(sdev)->status); unsigned int failed = status & ZFCP_STATUS_COMMON_ERP_FAILED ? 1 : 0; return sprintf(buf, "%d\n", failed); } static ssize_t zfcp_sysfs_scsi_zfcp_failed_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct scsi_device *sdev = to_scsi_device(dev); unsigned long val; if (kstrtoul(buf, 0, &val) || val != 0) return -EINVAL; zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_RUNNING); zfcp_erp_lun_reopen(sdev, ZFCP_STATUS_COMMON_ERP_FAILED, "syufai3"); zfcp_erp_wait(sdev_to_zfcp(sdev)->port->adapter); return count; } static DEVICE_ATTR(zfcp_failed, S_IWUSR | S_IRUGO, zfcp_sysfs_scsi_zfcp_failed_show, zfcp_sysfs_scsi_zfcp_failed_store); ZFCP_DEFINE_SCSI_ATTR(zfcp_in_recovery, "%d\n", (atomic_read(&zfcp_sdev->status) & ZFCP_STATUS_COMMON_ERP_INUSE) != 0); ZFCP_DEFINE_SCSI_ATTR(zfcp_status, "0x%08x\n", atomic_read(&zfcp_sdev->status)); struct device_attribute *zfcp_sysfs_sdev_attrs[] = { &dev_attr_fcp_lun, &dev_attr_wwpn, &dev_attr_hba_id, &dev_attr_read_latency, &dev_attr_write_latency, &dev_attr_cmd_latency, &dev_attr_zfcp_access_denied, &dev_attr_zfcp_failed, &dev_attr_zfcp_in_recovery, &dev_attr_zfcp_status, NULL }; static ssize_t zfcp_sysfs_adapter_util_show(struct device *dev, struct device_attribute *attr, char *buf) { struct Scsi_Host *scsi_host = dev_to_shost(dev); struct fsf_qtcb_bottom_port *qtcb_port; struct zfcp_adapter *adapter; int retval; adapter = (struct zfcp_adapter *) scsi_host->hostdata[0]; if (!(adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA)) return -EOPNOTSUPP; qtcb_port = kzalloc(sizeof(struct fsf_qtcb_bottom_port), GFP_KERNEL); if (!qtcb_port) return -ENOMEM; retval = zfcp_fsf_exchange_port_data_sync(adapter->qdio, qtcb_port); if (!retval) retval = sprintf(buf, "%u %u %u\n", qtcb_port->cp_util, qtcb_port->cb_util, qtcb_port->a_util); kfree(qtcb_port); return retval; } static DEVICE_ATTR(utilization, S_IRUGO, zfcp_sysfs_adapter_util_show, NULL); static int zfcp_sysfs_adapter_ex_config(struct device *dev, struct fsf_statistics_info *stat_inf) { struct Scsi_Host *scsi_host = dev_to_shost(dev); struct fsf_qtcb_bottom_config *qtcb_config; struct zfcp_adapter *adapter; int retval; adapter = (struct zfcp_adapter *) scsi_host->hostdata[0]; if (!(adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA)) return -EOPNOTSUPP; qtcb_config = kzalloc(sizeof(struct fsf_qtcb_bottom_config), GFP_KERNEL); if (!qtcb_config) return -ENOMEM; retval = zfcp_fsf_exchange_config_data_sync(adapter->qdio, qtcb_config); if (!retval) *stat_inf = qtcb_config->stat_info; kfree(qtcb_config); return retval; } #define ZFCP_SHOST_ATTR(_name, _format, _arg...) \ static ssize_t zfcp_sysfs_adapter_##_name##_show(struct device *dev, \ struct device_attribute *attr,\ char *buf) \ { \ struct fsf_statistics_info stat_info; \ int retval; \ \ retval = zfcp_sysfs_adapter_ex_config(dev, &stat_info); \ if (retval) \ return retval; \ \ return sprintf(buf, _format, ## _arg); \ } \ static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_adapter_##_name##_show, NULL); ZFCP_SHOST_ATTR(requests, "%llu %llu %llu\n", (unsigned long long) stat_info.input_req, (unsigned long long) stat_info.output_req, (unsigned long long) stat_info.control_req); ZFCP_SHOST_ATTR(megabytes, "%llu %llu\n", (unsigned long long) stat_info.input_mb, (unsigned long long) stat_info.output_mb); ZFCP_SHOST_ATTR(seconds_active, "%llu\n", (unsigned long long) stat_info.seconds_act); static ssize_t zfcp_sysfs_adapter_q_full_show(struct device *dev, struct device_attribute *attr, char *buf) { struct Scsi_Host *scsi_host = class_to_shost(dev); struct zfcp_qdio *qdio = ((struct zfcp_adapter *) scsi_host->hostdata[0])->qdio; u64 util; spin_lock_bh(&qdio->stat_lock); util = qdio->req_q_util; spin_unlock_bh(&qdio->stat_lock); return sprintf(buf, "%d %llu\n", atomic_read(&qdio->req_q_full), (unsigned long long)util); } static DEVICE_ATTR(queue_full, S_IRUGO, zfcp_sysfs_adapter_q_full_show, NULL); struct device_attribute *zfcp_sysfs_shost_attrs[] = { &dev_attr_utilization, &dev_attr_requests, &dev_attr_megabytes, &dev_attr_seconds_active, &dev_attr_queue_full, NULL };