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