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[SCSI] aic94xx: Scan SAS devices asynchronously 

Add the necessary hooks to the aic94xx driver to support the asynchronous SCSI
device scan infrastructure.

Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: Matthew Wilcox <matthew@wil.cx>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This commit is contained in:
Darrick J. Wong 2007-01-11 14:15:38 -08:00 committed by James Bottomley
parent fe3b5bfe73
commit e7571c152d
1 changed files with 28 additions and 13 deletions
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41
drivers/scsi/aic94xx/aic94xx_init.c
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@ -57,6 +57,8 @@ MODULE_PARM_DESC(collector, "\n"
char sas_addr_str[2*SAS_ADDR_SIZE + 1] = "";
static struct scsi_transport_template *aic94xx_transport_template;
static int asd_scan_finished(struct Scsi_Host *, unsigned long);
static void asd_scan_start(struct Scsi_Host *);
static struct scsi_host_template aic94xx_sht = {
.module = THIS_MODULE,
@ -66,6 +68,8 @@ static struct scsi_host_template aic94xx_sht = {
.target_alloc = sas_target_alloc,
.slave_configure = sas_slave_configure,
.slave_destroy = sas_slave_destroy,
.scan_finished = asd_scan_finished,
.scan_start = asd_scan_start,
.change_queue_depth = sas_change_queue_depth,
.change_queue_type = sas_change_queue_type,
.bios_param = sas_bios_param,
@ -672,21 +676,10 @@ static int __devinit asd_pci_probe(struct pci_dev *dev,
if (err)
goto Err_reg_sas;
err = asd_enable_phys(asd_ha, asd_ha->hw_prof.enabled_phys);
if (err) {
asd_printk("coudln't enable phys, err:%d\n", err);
goto Err_en_phys;
}
ASD_DPRINTK("enabled phys\n");
/* give the phy enabling interrupt event time to come in (1s
* is empirically about all it takes) */
ssleep(1);
/* Wait for discovery to finish */
scsi_flush_work(asd_ha->sas_ha.core.shost);
scsi_scan_host(shost);
return 0;
Err_en_phys:
asd_unregister_sas_ha(asd_ha);
Err_reg_sas:
asd_remove_dev_attrs(asd_ha);
Err_dev_attrs:
@ -779,6 +772,28 @@ static void __devexit asd_pci_remove(struct pci_dev *dev)
return;
}
static void asd_scan_start(struct Scsi_Host *shost)
{
struct asd_ha_struct *asd_ha;
int err;
asd_ha = SHOST_TO_SAS_HA(shost)->lldd_ha;
err = asd_enable_phys(asd_ha, asd_ha->hw_prof.enabled_phys);
if (err)
asd_printk("Couldn't enable phys, err:%d\n", err);
}
static int asd_scan_finished(struct Scsi_Host *shost, unsigned long time)
{
/* give the phy enabling interrupt event time to come in (1s
* is empirically about all it takes) */
if (time < HZ)
return 0;
/* Wait for discovery to finish */
scsi_flush_work(shost);
return 1;
}
static ssize_t asd_version_show(struct device_driver *driver, char *buf)
{
return snprintf(buf, PAGE_SIZE, "%s\n", ASD_DRIVER_VERSION);