diff options
| author | Rasesh Mody <rmody@brocade.com> | 2011-07-22 08:07:47 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2011-07-22 17:01:13 -0700 |
| commit | d4e16d4285d93ea0c284a3cf547e61472f79f8d2 (patch) | |
| tree | b6539602e3e956909e49dfde757e48276fecc005 /drivers | |
| parent | f374b36103cf22c9416f1004b0302b03fad79547 (diff) | |
| download | linux-d4e16d4285d93ea0c284a3cf547e61472f79f8d2.tar.gz | |
bna: Add HW Semaphore Unlock Logic
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>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/bna/bfa_ioc.c | 25 | ||||
| -rw-r--r-- | drivers/net/bna/bfi.h | 6 |
2 files changed, 31 insertions, 0 deletions
diff --git a/drivers/net/bna/bfa_ioc.c b/drivers/net/bna/bfa_ioc.c index da56c2fe51b5..c3b62a3753f9 100644 --- a/drivers/net/bna/bfa_ioc.c +++ b/drivers/net/bna/bfa_ioc.c @@ -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); } @@ -1176,6 +1178,29 @@ bfa_nw_ioc_sem_release(void __iomem *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) { u32 r32; diff --git a/drivers/net/bna/bfi.h b/drivers/net/bna/bfi.h index 683a7d7acc38..088211c2724f 100644 --- a/drivers/net/bna/bfi.h +++ b/drivers/net/bna/bfi.h @@ -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 */ |