b52df4174d
Since sata devices can take several seconds to recover the link on reset the 0.5 seconds that libsas currently waits may not be enough. Instead if we are rediscovering a phy that was previously attached to a sata device let libata handle any resets to encourage the device to transmit the initial fis. Once sas_ata_hard_reset() and lldds learn how to honor 'deadline' libsas should stop encountering phys in an intermediate state, until then this will loop until the fis is transmitted or ->attached_sas_addr gets cleared, but in the more likely initial discovery case we keep existing behavior. Signed-off-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
85 lines
2.2 KiB
C
85 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->dev_type == SATA_DEV || dev->dev_type == SATA_PM ||
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dev->dev_type == SATA_PM_PORT;
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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_eh(struct Scsi_Host *shost, struct list_head *work_q,
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struct list_head *done_q);
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void sas_probe_sata(struct work_struct *work);
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void sas_ata_schedule_reset(struct domain_device *dev);
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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_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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static inline void sas_probe_sata(struct work_struct *work)
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{
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}
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static inline void sas_ata_schedule_reset(struct domain_device *dev)
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{
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}
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#endif
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#endif /* _SAS_ATA_H_ */
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