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[SCSI] bfa: IOCFC state machine enhancements

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- Add support to handle STOP/DISABLE events in the IOCFC state machine.
- Made changes to bring the IOC down on a flash driver config read failure.
- Added logic to clean the use count and fail sync registers during IOCFC init.

Signed-off-by: Vijaya Mohan Guvva <vmohan@brocade.com>
Signed-off-by: Krishna Gudipati <kgudipat@brocade.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This commit is contained in:
Krishna Gudipati
2012-09-21 17:24:21 -07:00
committed by James Bottomley
parent bc0e2c2a97
commit 7ac83b1fd0
3 changed files with 63 additions and 26 deletions
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25
drivers/scsi/bfa/bfa_ioc_ct.c
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@@ -57,13 +57,6 @@ bfa_ioc_ct_firmware_lock(struct bfa_ioc_s *ioc)
u32 usecnt;
struct bfi_ioc_image_hdr_s fwhdr;
/*
* If bios boot (flash based) -- do not increment usage count
*/
if (bfa_cb_image_get_size(bfa_ioc_asic_gen(ioc)) <
BFA_IOC_FWIMG_MINSZ)
return BFA_TRUE;
bfa_ioc_sem_get(ioc->ioc_regs.ioc_usage_sem_reg);
usecnt = readl(ioc->ioc_regs.ioc_usage_reg);
@@ -114,13 +107,6 @@ bfa_ioc_ct_firmware_unlock(struct bfa_ioc_s *ioc)
{
u32 usecnt;
/*
* If bios boot (flash based) -- do not decrement usage count
*/
if (bfa_cb_image_get_size(bfa_ioc_asic_gen(ioc)) <
BFA_IOC_FWIMG_MINSZ)
return;
/*
* decrement usage count
*/
@@ -400,13 +386,12 @@ static void
bfa_ioc_ct_ownership_reset(struct bfa_ioc_s *ioc)
{
if (bfa_ioc_is_cna(ioc)) {
bfa_ioc_sem_get(ioc->ioc_regs.ioc_usage_sem_reg);
writel(0, ioc->ioc_regs.ioc_usage_reg);
readl(ioc->ioc_regs.ioc_usage_sem_reg);
writel(1, ioc->ioc_regs.ioc_usage_sem_reg);
}
bfa_ioc_sem_get(ioc->ioc_regs.ioc_usage_sem_reg);
writel(0, ioc->ioc_regs.ioc_usage_reg);
readl(ioc->ioc_regs.ioc_usage_sem_reg);
writel(1, ioc->ioc_regs.ioc_usage_sem_reg);
writel(0, ioc->ioc_regs.ioc_fail_sync);
/*
* Read the hw sem reg to make sure that it is locked
* before we clear it. If it is not locked, writing 1