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192 lines
5.8 KiB
192 lines
5.8 KiB
/* 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 <[email protected]> |
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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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#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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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_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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int 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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int sas_notify_phy_event(struct asd_sas_phy *phy, enum phy_event event, |
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gfp_t flags); |
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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_resp *rps_resp); |
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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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#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 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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