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Commit d4e16d42 authored by Rasesh Mody's avatar Rasesh Mody Committed by David S. Miller
Browse files

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: default avatarRasesh Mody <rmody@brocade.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent f374b361

drivers/net/bna/bfa_ioc.c

+25 −0
Original line number Diff line number Diff line
@@ -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)

{

drivers/net/bna/bfi.h

+6 −0
Original line number Diff line number Diff line
@@ -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

 */