a01e70e570
This patch implements the ability to set the minimum and maximum linkrates for both libsas (for expanders) and aic94xx (for the host phys). It also tidies up the setting of the hardware min and max to make sure they're updated when the expander emits a change broadcast. Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
147 lines
4.3 KiB
C
147 lines
4.3 KiB
C
/*
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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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* This file is licensed under GPLv2.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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* USA
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*
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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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#define sas_printk(fmt, ...) printk(KERN_NOTICE "sas: " fmt, ## __VA_ARGS__)
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#ifdef SAS_DEBUG
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#define SAS_DPRINTK(fmt, ...) printk(KERN_NOTICE "sas: " fmt, ## __VA_ARGS__)
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#else
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#define SAS_DPRINTK(fmt, ...)
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#endif
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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_proto 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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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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enum scsi_eh_timer_return sas_scsi_timed_out(struct scsi_cmnd *);
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int sas_init_queue(struct sas_ha_struct *sas_ha);
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int sas_init_events(struct sas_ha_struct *sas_ha);
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void sas_shutdown_queue(struct sas_ha_struct *sas_ha);
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void sas_deform_port(struct asd_sas_phy *phy);
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void sas_porte_bytes_dmaed(void *);
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void sas_porte_broadcast_rcvd(void *);
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void sas_porte_link_reset_err(void *);
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void sas_porte_timer_event(void *);
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void sas_porte_hard_reset(void *);
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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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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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struct domain_device *sas_find_dev_by_rphy(struct sas_rphy *rphy);
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void sas_hae_reset(void *);
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static inline void sas_queue_event(int event, spinlock_t *lock,
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unsigned long *pending,
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struct work_struct *work,
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struct Scsi_Host *shost)
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{
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unsigned long flags;
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spin_lock_irqsave(lock, flags);
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if (test_bit(event, pending)) {
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spin_unlock_irqrestore(lock, flags);
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return;
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}
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__set_bit(event, pending);
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spin_unlock_irqrestore(lock, flags);
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scsi_queue_work(shost, work);
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}
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static inline void sas_begin_event(int event, spinlock_t *lock,
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unsigned long *pending)
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{
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unsigned long flags;
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spin_lock_irqsave(lock, flags);
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__clear_bit(event, pending);
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spin_unlock_irqrestore(lock, flags);
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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 SATA_DEV:
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/* FIXME: need sata device type */
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case SAS_END_DEV:
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rphy->identify.device_type = SAS_END_DEVICE;
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break;
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case EDGE_DEV:
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rphy->identify.device_type = SAS_EDGE_EXPANDER_DEVICE;
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break;
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case FANOUT_DEV:
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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_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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#endif /* _SAS_INTERNAL_H_ */
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