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[SCSI] hpsa: factor out hpsa_enter_simple_mode 

Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
This commit is contained in:
Stephen M. Cameron 2010-05-27 15:13:48 -05:00 committed by James Bottomley
parent 3d0eab67cf
commit eb6b2ae905
1 changed files with 35 additions and 27 deletions
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62
drivers/scsi/hpsa.c
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@ -3410,9 +3410,41 @@ static inline void hpsa_p600_dma_prefetch_quirk(struct ctlr_info *h)
writel(dma_prefetch, h->vaddr + I2O_DMA1_CFG);
}
static int __devinit hpsa_enter_simple_mode(struct ctlr_info *h)
{
int i;
h->max_commands = readl(&(h->cfgtable->CmdsOutMax));
/* Update the field, and then ring the doorbell */
writel(CFGTBL_Trans_Simple, &(h->cfgtable->HostWrite.TransportRequest));
writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL);
/* under certain very rare conditions, this can take awhile.
* (e.g.: hot replace a failed 144GB drive in a RAID 5 set right
* as we enter this code.)
*/
for (i = 0; i < MAX_CONFIG_WAIT; i++) {
if (!(readl(h->vaddr + SA5_DOORBELL) & CFGTBL_ChangeReq))
break;
/* delay and try again */
msleep(10);
}
#ifdef HPSA_DEBUG
print_cfg_table(&h->pdev->dev, h->cfgtable);
#endif /* HPSA_DEBUG */
if (!(readl(&(h->cfgtable->TransportActive)) & CFGTBL_Trans_Simple)) {
dev_warn(&h->pdev->dev,
"unable to get board into simple mode\n");
return -ENODEV;
}
return 0;
}
static int __devinit hpsa_pci_init(struct ctlr_info *h)
{
int i, prod_index, err;
int prod_index, err;
prod_index = hpsa_lookup_board_id(h->pdev, &h->board_id);
if (prod_index < 0)
@ -3459,33 +3491,9 @@ static int __devinit hpsa_pci_init(struct ctlr_info *h)
}
hpsa_enable_scsi_prefetch(h);
hpsa_p600_dma_prefetch_quirk(h);
h->max_commands = readl(&(h->cfgtable->CmdsOutMax));
/* Update the field, and then ring the doorbell */
writel(CFGTBL_Trans_Simple, &(h->cfgtable->HostWrite.TransportRequest));
writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL);
/* under certain very rare conditions, this can take awhile.
* (e.g.: hot replace a failed 144GB drive in a RAID 5 set right
* as we enter this code.)
*/
for (i = 0; i < MAX_CONFIG_WAIT; i++) {
if (!(readl(h->vaddr + SA5_DOORBELL) & CFGTBL_ChangeReq))
break;
/* delay and try again */
msleep(10);
}
#ifdef HPSA_DEBUG
print_cfg_table(&h->pdev->dev, h->cfgtable);
#endif /* HPSA_DEBUG */
if (!(readl(&(h->cfgtable->TransportActive)) & CFGTBL_Trans_Simple)) {
dev_warn(&h->pdev->dev,
"unable to get board into simple mode\n");
err = -ENODEV;
err = hpsa_enter_simple_mode(h);
if (err)
goto err_out_free_res;
}
return 0;
err_out_free_res: