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00dd4998a6
The conversion is quite complex given that the libata new error handler has to be hooked into the current libsas timeout and error handling. The way this is done is to process all the failed commands via libsas first, but if they have no underlying sas task (and they're on a sata device) assume they are destined for the libata error handler and send them accordingly. Finally, activate the port recovery of the libata error handler for each port known to the host. This is somewhat suboptimal, since that port may not need recovering, but given the current architecture of the libata error handler, it's the only way; and the spurious activation is harmless. Signed-off-by: James Bottomley <James.Bottomley@suse.de> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
83 lines
2.2 KiB
C
83 lines
2.2 KiB
C
/*
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* Support for SATA devices on Serial Attached SCSI (SAS) controllers
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*
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* Copyright (C) 2006 IBM Corporation
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*
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* Written by: Darrick J. Wong <djwong@us.ibm.com>, IBM Corporation
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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_ATA_H_
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#define _SAS_ATA_H_
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#include <linux/libata.h>
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#include <scsi/libsas.h>
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#ifdef CONFIG_SCSI_SAS_ATA
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static inline int dev_is_sata(struct domain_device *dev)
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{
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return (dev->rphy->identify.target_port_protocols & SAS_PROTOCOL_SATA);
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}
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int sas_ata_init_host_and_port(struct domain_device *found_dev,
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struct scsi_target *starget);
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void sas_ata_task_abort(struct sas_task *task);
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void sas_ata_strategy_handler(struct Scsi_Host *shost);
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int sas_ata_timed_out(struct scsi_cmnd *cmd, struct sas_task *task,
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enum blk_eh_timer_return *rtn);
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int sas_ata_eh(struct Scsi_Host *shost, struct list_head *work_q,
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struct list_head *done_q);
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#else
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static inline int dev_is_sata(struct domain_device *dev)
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{
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return 0;
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}
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static inline int sas_ata_init_host_and_port(struct domain_device *found_dev,
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struct scsi_target *starget)
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{
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return 0;
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}
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static inline void sas_ata_task_abort(struct sas_task *task)
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{
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}
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static inline void sas_ata_strategy_handler(struct Scsi_Host *shost)
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{
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}
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static inline int sas_ata_timed_out(struct scsi_cmnd *cmd,
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struct sas_task *task,
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enum blk_eh_timer_return *rtn)
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{
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return 0;
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}
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static inline int sas_ata_eh(struct Scsi_Host *shost, struct list_head *work_q,
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struct list_head *done_q)
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{
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return 0;
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}
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#endif
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#endif /* _SAS_ATA_H_ */
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