222 lines
6.8 KiB
C
222 lines
6.8 KiB
C
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/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Serial Attached SCSI (SAS) class internal header file
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*
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* Copyright (C) 2005 Adaptec, Inc. All rights reserved.
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* Copyright (C) 2005 Luben Tuikov <luben_tuikov@adaptec.com>
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*/
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#ifndef _SAS_INTERNAL_H_
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#define _SAS_INTERNAL_H_
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#include <scsi/scsi.h>
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#include <scsi/scsi_host.h>
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#include <scsi/scsi_transport_sas.h>
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#include <scsi/libsas.h>
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#include <scsi/sas_ata.h>
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#include <linux/pm_runtime.h>
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#ifdef pr_fmt
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#undef pr_fmt
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#endif
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#define SAS_FMT "sas: "
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#define pr_fmt(fmt) SAS_FMT fmt
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#define TO_SAS_TASK(_scsi_cmd) ((void *)(_scsi_cmd)->host_scribble)
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#define ASSIGN_SAS_TASK(_sc, _t) do { (_sc)->host_scribble = (void *) _t; } while (0)
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struct sas_phy_data {
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/* let reset be performed in sas_queue_work() context */
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struct sas_phy *phy;
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struct mutex event_lock;
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int hard_reset;
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int reset_result;
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struct sas_work reset_work;
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int enable;
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int enable_result;
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struct sas_work enable_work;
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};
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void sas_scsi_recover_host(struct Scsi_Host *shost);
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int sas_show_class(enum sas_class class, char *buf);
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int sas_show_proto(enum sas_protocol proto, char *buf);
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int sas_show_linkrate(enum sas_linkrate linkrate, char *buf);
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int sas_show_oob_mode(enum sas_oob_mode oob_mode, char *buf);
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int sas_register_phys(struct sas_ha_struct *sas_ha);
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void sas_unregister_phys(struct sas_ha_struct *sas_ha);
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struct asd_sas_event *sas_alloc_event(struct asd_sas_phy *phy, gfp_t gfp_flags);
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void sas_free_event(struct asd_sas_event *event);
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struct sas_task *sas_alloc_task(gfp_t flags);
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struct sas_task *sas_alloc_slow_task(gfp_t flags);
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void sas_free_task(struct sas_task *task);
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int sas_register_ports(struct sas_ha_struct *sas_ha);
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void sas_unregister_ports(struct sas_ha_struct *sas_ha);
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void sas_disable_revalidation(struct sas_ha_struct *ha);
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void sas_enable_revalidation(struct sas_ha_struct *ha);
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void sas_queue_deferred_work(struct sas_ha_struct *ha);
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void __sas_drain_work(struct sas_ha_struct *ha);
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void sas_deform_port(struct asd_sas_phy *phy, int gone);
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void sas_porte_bytes_dmaed(struct work_struct *work);
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void sas_porte_broadcast_rcvd(struct work_struct *work);
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void sas_porte_link_reset_err(struct work_struct *work);
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void sas_porte_timer_event(struct work_struct *work);
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void sas_porte_hard_reset(struct work_struct *work);
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bool sas_queue_work(struct sas_ha_struct *ha, struct sas_work *sw);
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int sas_notify_lldd_dev_found(struct domain_device *);
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void sas_notify_lldd_dev_gone(struct domain_device *);
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void sas_smp_handler(struct bsg_job *job, struct Scsi_Host *shost,
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struct sas_rphy *rphy);
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int sas_smp_phy_control(struct domain_device *dev, int phy_id,
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enum phy_func phy_func, struct sas_phy_linkrates *);
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int sas_smp_get_phy_events(struct sas_phy *phy);
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void sas_device_set_phy(struct domain_device *dev, struct sas_port *port);
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struct domain_device *sas_find_dev_by_rphy(struct sas_rphy *rphy);
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struct domain_device *sas_ex_to_ata(struct domain_device *ex_dev, int phy_id);
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int sas_ex_phy_discover(struct domain_device *dev, int single);
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int sas_get_report_phy_sata(struct domain_device *dev, int phy_id,
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struct smp_rps_resp *rps_resp);
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int sas_get_phy_attached_dev(struct domain_device *dev, int phy_id,
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u8 *sas_addr, enum sas_device_type *type);
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int sas_try_ata_reset(struct asd_sas_phy *phy);
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void sas_hae_reset(struct work_struct *work);
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void sas_free_device(struct kref *kref);
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void sas_destruct_devices(struct asd_sas_port *port);
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extern const work_func_t sas_phy_event_fns[PHY_NUM_EVENTS];
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extern const work_func_t sas_port_event_fns[PORT_NUM_EVENTS];
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void sas_task_internal_done(struct sas_task *task);
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void sas_task_internal_timedout(struct timer_list *t);
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int sas_execute_tmf(struct domain_device *device, void *parameter,
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int para_len, int force_phy_id,
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struct sas_tmf_task *tmf);
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#ifdef CONFIG_SCSI_SAS_HOST_SMP
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extern void sas_smp_host_handler(struct bsg_job *job, struct Scsi_Host *shost);
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#else
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static inline void sas_smp_host_handler(struct bsg_job *job,
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struct Scsi_Host *shost)
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{
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shost_printk(KERN_ERR, shost,
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"Cannot send SMP to a sas host (not enabled in CONFIG)\n");
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bsg_job_done(job, -EINVAL, 0);
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}
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#endif
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static inline bool sas_phy_match_dev_addr(struct domain_device *dev,
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struct ex_phy *phy)
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{
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return SAS_ADDR(dev->sas_addr) == SAS_ADDR(phy->attached_sas_addr);
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}
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static inline bool sas_phy_match_port_addr(struct asd_sas_port *port,
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struct ex_phy *phy)
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{
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return SAS_ADDR(port->sas_addr) == SAS_ADDR(phy->attached_sas_addr);
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}
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static inline bool sas_phy_addr_match(struct ex_phy *p1, struct ex_phy *p2)
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{
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return SAS_ADDR(p1->attached_sas_addr) == SAS_ADDR(p2->attached_sas_addr);
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}
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static inline void sas_fail_probe(struct domain_device *dev, const char *func, int err)
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{
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pr_warn("%s: for %s device %016llx returned %d\n",
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func, dev->parent ? "exp-attached" :
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"direct-attached",
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SAS_ADDR(dev->sas_addr), err);
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sas_unregister_dev(dev->port, dev);
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}
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static inline void sas_fill_in_rphy(struct domain_device *dev,
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struct sas_rphy *rphy)
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{
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rphy->identify.sas_address = SAS_ADDR(dev->sas_addr);
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rphy->identify.initiator_port_protocols = dev->iproto;
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rphy->identify.target_port_protocols = dev->tproto;
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switch (dev->dev_type) {
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case SAS_SATA_DEV:
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/* FIXME: need sata device type */
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case SAS_END_DEVICE:
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case SAS_SATA_PENDING:
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rphy->identify.device_type = SAS_END_DEVICE;
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break;
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case SAS_EDGE_EXPANDER_DEVICE:
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rphy->identify.device_type = SAS_EDGE_EXPANDER_DEVICE;
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break;
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case SAS_FANOUT_EXPANDER_DEVICE:
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rphy->identify.device_type = SAS_FANOUT_EXPANDER_DEVICE;
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break;
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default:
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rphy->identify.device_type = SAS_PHY_UNUSED;
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break;
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}
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}
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static inline void sas_phy_set_target(struct asd_sas_phy *p, struct domain_device *dev)
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{
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struct sas_phy *phy = p->phy;
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if (dev) {
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if (dev_is_sata(dev))
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phy->identify.device_type = SAS_END_DEVICE;
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else
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phy->identify.device_type = dev->dev_type;
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phy->identify.target_port_protocols = dev->tproto;
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} else {
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phy->identify.device_type = SAS_PHY_UNUSED;
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phy->identify.target_port_protocols = 0;
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}
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}
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static inline void sas_add_parent_port(struct domain_device *dev, int phy_id)
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{
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struct expander_device *ex = &dev->ex_dev;
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struct ex_phy *ex_phy = &ex->ex_phy[phy_id];
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if (!ex->parent_port) {
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ex->parent_port = sas_port_alloc(&dev->rphy->dev, phy_id);
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/* FIXME: error handling */
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BUG_ON(!ex->parent_port);
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BUG_ON(sas_port_add(ex->parent_port));
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sas_port_mark_backlink(ex->parent_port);
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}
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sas_port_add_phy(ex->parent_port, ex_phy->phy);
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}
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static inline struct domain_device *sas_alloc_device(void)
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{
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struct domain_device *dev = kzalloc(sizeof(*dev), GFP_KERNEL);
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if (dev) {
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INIT_LIST_HEAD(&dev->siblings);
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INIT_LIST_HEAD(&dev->dev_list_node);
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INIT_LIST_HEAD(&dev->disco_list_node);
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kref_init(&dev->kref);
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spin_lock_init(&dev->done_lock);
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}
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return dev;
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}
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static inline void sas_put_device(struct domain_device *dev)
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{
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kref_put(&dev->kref, sas_free_device);
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}
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#endif /* _SAS_INTERNAL_H_ */
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