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[SCSI] ipr: Reset device cleanup 

Encapsulate some more of the device reset processing in
preparation for SATA support.

Signed-off-by: Brian King <brking@us.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This commit is contained in:
Brian King 2006-03-29 09:37:43 -06:00 коммит произвёл James Bottomley
Родитель fb3ed3cb4b
Коммит c651309671
1 изменённых файлов: 41 добавлений и 17 удалений
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58
drivers/scsi/ipr.c
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@ -3280,6 +3280,44 @@ static int ipr_eh_host_reset(struct scsi_cmnd * cmd)
return rc;
}
/**
* ipr_device_reset - Reset the device
* @ioa_cfg: ioa config struct
* @res: resource entry struct
*
* This function issues a device reset to the affected device.
* If the device is a SCSI device, a LUN reset will be sent
* to the device first. If that does not work, a target reset
* will be sent.
*
* Return value:
* 0 on success / non-zero on failure
**/
static int ipr_device_reset(struct ipr_ioa_cfg *ioa_cfg,
struct ipr_resource_entry *res)
{
struct ipr_cmnd *ipr_cmd;
struct ipr_ioarcb *ioarcb;
struct ipr_cmd_pkt *cmd_pkt;
u32 ioasc;
ENTER;
ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
ioarcb = &ipr_cmd->ioarcb;
cmd_pkt = &ioarcb->cmd_pkt;
ioarcb->res_handle = res->cfgte.res_handle;
cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
ipr_send_blocking_cmd(ipr_cmd, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
LEAVE;
return (IPR_IOASC_SENSE_KEY(ioasc) ? -EIO : 0);
}
/**
* ipr_eh_dev_reset - Reset the device
* @scsi_cmd: scsi command struct
@ -3296,8 +3334,7 @@ static int __ipr_eh_dev_reset(struct scsi_cmnd * scsi_cmd)
struct ipr_cmnd *ipr_cmd;
struct ipr_ioa_cfg *ioa_cfg;
struct ipr_resource_entry *res;
struct ipr_cmd_pkt *cmd_pkt;
u32 ioasc;
int rc;
ENTER;
ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
@ -3324,25 +3361,12 @@ static int __ipr_eh_dev_reset(struct scsi_cmnd * scsi_cmd)
}
res->resetting_device = 1;
ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
ipr_cmd->ioarcb.res_handle = res->cfgte.res_handle;
cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
scmd_printk(KERN_ERR, scsi_cmd, "Resetting device\n");
ipr_send_blocking_cmd(ipr_cmd, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
rc = ipr_device_reset(ioa_cfg, res);
res->resetting_device = 0;
list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
LEAVE;
return (IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS);
return (rc ? FAILED : SUCCESS);
}
static int ipr_eh_dev_reset(struct scsi_cmnd * cmd)