From patchwork Wed Mar 31 07:29:56 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 413251 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=-16.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable 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 92446C4321A for ; Wed, 31 Mar 2021 07:31:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7EB96619F0 for ; Wed, 31 Mar 2021 07:31:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234198AbhCaHaw (ORCPT ); Wed, 31 Mar 2021 03:30:52 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39548 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234139AbhCaHaf (ORCPT ); Wed, 31 Mar 2021 03:30:35 -0400 Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:e::133]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4F995C061760; Wed, 31 Mar 2021 00:30:33 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; h=Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender :Reply-To:Content-Type:Content-ID:Content-Description; bh=HMrQFdEqTyBg/M3ifvGlP4fPPi7g5iRJWi3abdZV+WU=; b=uVzsdRrF8Mh0G/EfnrmZ7r5A1U YZpZrjENorE6CqrV6efm81e2mle9uAMDyxRRf7wC/XScrUSWExcNIGUcaHyEL7XAoD8MkRtGFtXp/ j3qDoJRzigrBdiRqBTaSuqLTJ6OH3KfOS8H/Fc0RBpDuSaeO/nPx4JuOEaXNdqR8s7VG1STfnBi3A O/4F7u/0U8S7AJoC782tJdKLmjmHSJnsPBpLgs07EYj8olE2WTKNwqwDumxO0VSejZdccTvNLqNG8 G8q2eiHHMYMrllO2q2a1zv613DokZgJCX5wwtkNEjtJPULQbwEmP8WgCHfKc6QmNy799ngeBvIEZw Km/S63tw==; Received: from [2001:4bb8:180:7517:3f75:91d7:136b:f8e1] (helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.94 #2 (Red Hat Linux)) id 1lRVIq-009dEm-Eq; Wed, 31 Mar 2021 07:30:12 +0000 From: Christoph Hellwig To: Jens Axboe , Khalid Aziz , "Martin K. Petersen" , Matthew Wilcox , Hannes Reinecke , Ondrej Zary Cc: linux-block@vger.kernel.org, linux-scsi@vger.kernel.org, Hannes Reinecke Subject: [PATCH 3/8] BusLogic: reject broken old firmware that requires ISA-style bounce buffering Date: Wed, 31 Mar 2021 09:29:56 +0200 Message-Id: <20210331073001.46776-4-hch@lst.de> X-Mailer: git-send-email 2.30.1 In-Reply-To: <20210331073001.46776-1-hch@lst.de> References: <20210331073001.46776-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org Warn on and don't support adapters that have a DMA bug that forces ISA-style bounce buffering. Signed-off-by: Christoph Hellwig Acked-by: Khalid Aziz Acked-by: Martin K. Petersen Reviewed-by: Hannes Reinecke --- drivers/scsi/BusLogic.c | 21 ++++++--------------- drivers/scsi/BusLogic.h | 1 - 2 files changed, 6 insertions(+), 16 deletions(-) diff --git a/drivers/scsi/BusLogic.c b/drivers/scsi/BusLogic.c index 25ca2f9383462c..69068081f4396b 100644 --- a/drivers/scsi/BusLogic.c +++ b/drivers/scsi/BusLogic.c @@ -1616,14 +1616,12 @@ static bool __init blogic_rdconfig(struct blogic_adapter *adapter) hardware bug whereby when the BIOS is enabled, transfers to/from the same address range the BIOS occupies modulo 16MB are handled incorrectly. Only properly functioning BT-445S Host Adapters - have firmware version 3.37, so require that ISA Bounce Buffers - be used for the buggy BT-445S models if there is more than 16MB - memory. + have firmware version 3.37. */ - if (adapter->bios_addr > 0 && strcmp(adapter->model, "BT-445S") == 0 && - strcmp(adapter->fw_ver, "3.37") < 0 && - (void *) high_memory > (void *) MAX_DMA_ADDRESS) - adapter->need_bouncebuf = true; + if (adapter->bios_addr > 0 && + strcmp(adapter->model, "BT-445S") == 0 && + strcmp(adapter->fw_ver, "3.37") < 0) + return blogic_failure(adapter, "Too old firmware"); /* Initialize parameters common to MultiMaster and FlashPoint Host Adapters. @@ -1646,14 +1644,9 @@ static bool __init blogic_rdconfig(struct blogic_adapter *adapter) if (adapter->drvr_opts != NULL && adapter->drvr_opts->qdepth[tgt_id] > 0) qdepth = adapter->drvr_opts->qdepth[tgt_id]; - else if (adapter->need_bouncebuf) - qdepth = BLOGIC_TAG_DEPTH_BB; adapter->qdepth[tgt_id] = qdepth; } - if (adapter->need_bouncebuf) - adapter->untag_qdepth = BLOGIC_UNTAG_DEPTH_BB; - else - adapter->untag_qdepth = BLOGIC_UNTAG_DEPTH; + adapter->untag_qdepth = BLOGIC_UNTAG_DEPTH; if (adapter->drvr_opts != NULL) adapter->common_qdepth = adapter->drvr_opts->common_qdepth; if (adapter->common_qdepth > 0 && @@ -2155,7 +2148,6 @@ static void __init blogic_inithoststruct(struct blogic_adapter *adapter, host->this_id = adapter->scsi_id; host->can_queue = adapter->drvr_qdepth; host->sg_tablesize = adapter->drvr_sglimit; - host->unchecked_isa_dma = adapter->need_bouncebuf; host->cmd_per_lun = adapter->untag_qdepth; } @@ -3677,7 +3669,6 @@ static struct scsi_host_template blogic_template = { #if 0 .eh_abort_handler = blogic_abort, #endif - .unchecked_isa_dma = 1, .max_sectors = 128, }; diff --git a/drivers/scsi/BusLogic.h b/drivers/scsi/BusLogic.h index 2eedeaa47970f0..a8e4a19788a776 100644 --- a/drivers/scsi/BusLogic.h +++ b/drivers/scsi/BusLogic.h @@ -1003,7 +1003,6 @@ struct blogic_adapter { bool terminfo_valid:1; bool low_term:1; bool high_term:1; - bool need_bouncebuf:1; bool strict_rr:1; bool scam_enabled:1; bool scam_lev2:1;