From mboxrd@z Thu Jan 1 00:00:00 1970 From: Rasesh Mody Subject: [PATCH 30/45] bna: Add HW Semaphore Unlock Logic Date: Mon, 18 Jul 2011 01:22:50 -0700 Message-ID: <1310977385-5268-20-git-send-email-rmody@brocade.com> References: <1310977385-5268-1-git-send-email-rmody@brocade.com> Mime-Version: 1.0 Content-Type: text/plain Cc: , , Rasesh Mody To: , Return-path: Received: from mx0b-000f0801.pphosted.com ([67.231.152.113]:37816 "EHLO mx0b-000f0801.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753227Ab1GRIYf (ORCPT ); Mon, 18 Jul 2011 04:24:35 -0400 In-Reply-To: <1310977385-5268-1-git-send-email-rmody@brocade.com> Sender: netdev-owner@vger.kernel.org List-ID: 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 --- drivers/net/bna/bfa_ioc.c | 25 +++++++++++++++++++++++++ 1 files changed, 25 insertions(+), 0 deletions(-) diff --git a/drivers/net/bna/bfa_ioc.c b/drivers/net/bna/bfa_ioc.c index 78cdc2b..940c94a 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); @@ -691,6 +692,7 @@ 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); } @@ -1263,6 +1265,29 @@ 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; -- 1.7.1