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bna: Add HW Semaphore Unlock Logic

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Change details:
 - Added logic to unlock hw semaphore if the previos FW boot was from boot
   code (flash based) and the current FW initialization attempt is from OS
   driver.

Signed-off-by: Rasesh Mody <rmody@brocade.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Rasesh Mody 2011-07-22 08:07:47 +00:00 committed by David S. Miller
parent f374b36103
commit d4e16d4285
2 changed files with 31 additions and 0 deletions
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25
drivers/net/bna/bfa_ioc.c
View File

@ -58,6 +58,7 @@ static bool bfa_nw_auto_recover = true;
/*
* forward declarations
*/
static void bfa_ioc_hw_sem_init(struct bfa_ioc *ioc);
static void bfa_ioc_hw_sem_get(struct bfa_ioc *ioc);
static void bfa_ioc_hw_sem_get_cancel(struct bfa_ioc *ioc);
static void bfa_ioc_hwinit(struct bfa_ioc *ioc, bool force);
@ -590,6 +591,7 @@ bfa_iocpf_sm_reset(struct bfa_iocpf *iocpf, enum iocpf_event event)
static void
bfa_iocpf_sm_fwcheck_entry(struct bfa_iocpf *iocpf)
{
bfa_ioc_hw_sem_init(iocpf->ioc);
bfa_ioc_hw_sem_get(iocpf->ioc);
}
@ -1175,6 +1177,29 @@ bfa_nw_ioc_sem_release(void __iomem *sem_reg)
writel(1, sem_reg);
}
static void
bfa_ioc_hw_sem_init(struct bfa_ioc *ioc)
{
struct bfi_ioc_image_hdr fwhdr;
u32 fwstate = readl(ioc->ioc_regs.ioc_fwstate);
if (fwstate == BFI_IOC_UNINIT)
return;
bfa_nw_ioc_fwver_get(ioc, &fwhdr);
if (swab32(fwhdr.exec) == BFI_FWBOOT_TYPE_NORMAL)
return;
writel(BFI_IOC_UNINIT, ioc->ioc_regs.ioc_fwstate);
/*
* Try to lock and then unlock the semaphore.
*/
readl(ioc->ioc_regs.ioc_sem_reg);
writel(1, ioc->ioc_regs.ioc_sem_reg);
}
static void
bfa_ioc_hw_sem_get(struct bfa_ioc *ioc)
{

6
drivers/net/bna/bfi.h
View File

@ -289,6 +289,12 @@ struct bfi_ioc_image_hdr {
u32 md5sum[BFI_IOC_MD5SUM_SZ];
};
enum bfi_fwboot_type {
BFI_FWBOOT_TYPE_NORMAL = 0,
BFI_FWBOOT_TYPE_FLASH = 1,
BFI_FWBOOT_TYPE_MEMTEST = 2,
};
/**
* BFI_IOC_I2H_READY_EVENT message
*/