From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8C1B2C10F11 for ; Mon, 22 Apr 2019 20:01:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5E73E218D3 for ; Mon, 22 Apr 2019 20:01:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1555963266; bh=t3gCV20ZUlQnVbrpTeGE+GE+GW/w4xR6g03lr6zyncg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=qBZJtMmL2Dy3gbqsL5HNNl7T+a/e931try9K3D7ike/ErHpkElPPDjHcOd5aKO9C4 AK15ejKFEoiwXc8DpMMF0fa6Nfm31SxqBzPCrtVTev83ZInnVPAYfn+H1RX/96qlUF POVTdB4KtsQen05Hm47sq0T5aUgQTKXKB536Rtas= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730156AbfDVTrE (ORCPT ); Mon, 22 Apr 2019 15:47:04 -0400 Received: from mail.kernel.org ([198.145.29.99]:49484 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730120AbfDVTq5 (ORCPT ); Mon, 22 Apr 2019 15:46:57 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 85F1E21902; Mon, 22 Apr 2019 19:46:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1555962416; bh=t3gCV20ZUlQnVbrpTeGE+GE+GW/w4xR6g03lr6zyncg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=upb+m9ZxcQq/Oz4dpdvutVNrpwfEao9YhkUw/qMpP86btBbXZAcnFq8cXhc8AIntU Jyz5EfS4Y/IJIA8M6sewIpF9jn4tQ9512sFjS9/qT9tjobqQriZ7yj1YwyRlrl+dYL t1o+1ZUSt5Vaa4EAZc9FnAowfGrfAAfgIJbJ8OY4= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Dave Carroll , "Martin K . Petersen" , Sasha Levin , linux-scsi@vger.kernel.org Subject: [PATCH AUTOSEL 4.19 50/68] scsi: aacraid: Insure we don't access PCIe space during AER/EEH Date: Mon, 22 Apr 2019 15:44:58 -0400 Message-Id: <20190422194516.11634-50-sashal@kernel.org> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20190422194516.11634-1-sashal@kernel.org> References: <20190422194516.11634-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Dave Carroll [ Upstream commit b6554cfe09e1f610aed7d57164ab7760be57acd9 ] There are a few windows during AER/EEH when we can access PCIe I/O mapped registers. This will harden the access to insure we do not allow PCIe access during errors Signed-off-by: Dave Carroll Reviewed-by: Sagar Biradar Signed-off-by: Martin K. Petersen Signed-off-by: Sasha Levin (Microsoft) --- drivers/scsi/aacraid/aacraid.h | 7 ++++++- drivers/scsi/aacraid/commsup.c | 4 ++-- 2 files changed, 8 insertions(+), 3 deletions(-) diff --git a/drivers/scsi/aacraid/aacraid.h b/drivers/scsi/aacraid/aacraid.h index 39eb415987fc..074760f21014 100644 --- a/drivers/scsi/aacraid/aacraid.h +++ b/drivers/scsi/aacraid/aacraid.h @@ -2639,9 +2639,14 @@ static inline unsigned int cap_to_cyls(sector_t capacity, unsigned divisor) return capacity; } +static inline int aac_pci_offline(struct aac_dev *dev) +{ + return pci_channel_offline(dev->pdev) || dev->handle_pci_error; +} + static inline int aac_adapter_check_health(struct aac_dev *dev) { - if (unlikely(pci_channel_offline(dev->pdev))) + if (unlikely(aac_pci_offline(dev))) return -1; return (dev)->a_ops.adapter_check_health(dev); diff --git a/drivers/scsi/aacraid/commsup.c b/drivers/scsi/aacraid/commsup.c index 3236240a4edd..b7588de4484e 100644 --- a/drivers/scsi/aacraid/commsup.c +++ b/drivers/scsi/aacraid/commsup.c @@ -673,7 +673,7 @@ int aac_fib_send(u16 command, struct fib *fibptr, unsigned long size, return -ETIMEDOUT; } - if (unlikely(pci_channel_offline(dev->pdev))) + if (unlikely(aac_pci_offline(dev))) return -EFAULT; if ((blink = aac_adapter_check_health(dev)) > 0) { @@ -773,7 +773,7 @@ int aac_hba_send(u8 command, struct fib *fibptr, fib_callback callback, spin_unlock_irqrestore(&fibptr->event_lock, flags); - if (unlikely(pci_channel_offline(dev->pdev))) + if (unlikely(aac_pci_offline(dev))) return -EFAULT; fibptr->flags |= FIB_CONTEXT_FLAG_WAIT; -- 2.19.1