From patchwork Fri Mar 5 10:29:02 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Suganath Prabu S X-Patchwork-Id: 12118303 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=-18.7 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, TVD_SUBJ_ACC_NUM,URIBL_BLOCKED,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 8BC7FC433DB for ; Fri, 5 Mar 2021 10:30:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5ACB864F5F for ; Fri, 5 Mar 2021 10:30:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229829AbhCEK34 (ORCPT ); Fri, 5 Mar 2021 05:29:56 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39524 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229801AbhCEK3u (ORCPT ); Fri, 5 Mar 2021 05:29:50 -0500 Received: from mail-pj1-x1032.google.com (mail-pj1-x1032.google.com [IPv6:2607:f8b0:4864:20::1032]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6110FC061574 for ; Fri, 5 Mar 2021 02:29:50 -0800 (PST) Received: by mail-pj1-x1032.google.com with SMTP id i4-20020a17090a7184b02900bfb60fbc6bso5932128pjk.0 for ; Fri, 05 Mar 2021 02:29:50 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=broadcom.com; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version; bh=MNQ0p7DmBXWzhJgrfabCIaFjarVQxG+9oLywzjV5HKw=; b=aoStOUj62mlSRbMscPaRyUZAjwP/K4Hmqpu0VD9juilTOrhv/H30Fub9tCAyVfw6HZ mRm69r9jpKX71cNIXYVxEwfwWWxNnyWhFBU0d3zSVUOirMvdnqtMydqBd9hlayM/KJ1i mNzl2w3ql9THNCtHPhHoRV8B5mzcBFgugUqs4= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version; bh=MNQ0p7DmBXWzhJgrfabCIaFjarVQxG+9oLywzjV5HKw=; b=gyyFH8L0f0UpA3S1Hdh2k38yNY5+P3uq0LR+uaSMpH4oA3Njjx32RxvSuFO9BqFi0b RkLdHihfIUJ0mb8qwARyVmSFkstd3lSZuJ6DSs65utaBWfqOhvySwaGb4MfjfPev4MZq lGvKk4SEr4n90f3461wUO65u/rfnSV0mPH+QT9CSy5xEyEO6HidsUE/0m/xmEFH8Kt86 k72nn1EiQ3nzB901/6vL7hUEW43dAHCZblb9EUg9pdNx+BXIOnlFlKtt6ZYiLiUHj6RO MvQslTMfbrTQkowQdvky5XJ/3l4JGoiH85ccIrR8P7Ha8mgVa8VlL0L5rnFNC9OWgExr 9mSQ== X-Gm-Message-State: AOAM532IA2MxNrpojZcJJeWeA+tA5GgfMRO0VAMQGPbz1a2dwTTFB2pl zBQYorfiXj6zHMBGElziikqJwoZw8/JlVNg/6POyvvqWqr4fuZ+2k/mfdxr3jmG4vA24meLeQyA 19WpFQrw4tRQuEFH/pjOG26GkgzZ5l0Kj7sKSQrpXKdKxrMug0DCjp4YeSlHGsC9ZfZBWxXKwjQ IzRx8GcChDQeM2zHgel+WU X-Google-Smtp-Source: ABdhPJz9+4luxktRwJVwOFTzNlTpj/QqQLDkKYJcQygt6rgZBrh46geDGbxgLdoA69klX0aN53SGsg== X-Received: by 2002:a17:90a:f98e:: with SMTP id cq14mr9310670pjb.60.1614940188726; Fri, 05 Mar 2021 02:29:48 -0800 (PST) Received: from dhcp-10-123-20-76.dhcp.broadcom.net ([192.19.234.250]) by smtp.gmail.com with ESMTPSA id v15sm2015983pgl.44.2021.03.05.02.29.46 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 05 Mar 2021 02:29:48 -0800 (PST) From: Suganath Prabu S To: linux-scsi@vger.kernel.org, martin.petersen@oracle.com Cc: Sathya.Prakash@broadcom.com, sreekanth.reddy@broadcom.com, Suganath Prabu S Subject: [PATCH 5/7] mpt3sas: Handle Reply post queue DMA allocations in same 4G region Date: Fri, 5 Mar 2021 15:59:02 +0530 Message-Id: <20210305102904.7560-6-suganath-prabu.subramani@broadcom.com> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20210305102904.7560-1-suganath-prabu.subramani@broadcom.com> References: <20210305102904.7560-1-suganath-prabu.subramani@broadcom.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org According to MPI Specification Reply Post buffers should not cross 4GB boundary. So while allocating Reply Post buffers, if any buffer crosses the 4GB boundary then, * Release the already allocated memory pools and * Reallocate them by changing the DMA coherent mask to 32 bit. Signed-off-by: Suganath Prabu S --- drivers/scsi/mpt3sas/mpt3sas_base.c | 59 ++++++++++++++++++++--------- 1 file changed, 42 insertions(+), 17 deletions(-) diff --git a/drivers/scsi/mpt3sas/mpt3sas_base.c b/drivers/scsi/mpt3sas/mpt3sas_base.c index e94abce..bd180db 100644 --- a/drivers/scsi/mpt3sas/mpt3sas_base.c +++ b/drivers/scsi/mpt3sas/mpt3sas_base.c @@ -5594,6 +5594,42 @@ _base_allocate_reply_pool(struct MPT3SAS_ADAPTER *ioc, u32 sz) return 0; } +/** + * _base_allocate_reply_free_dma_pool - Allocating DMA'able memory + * for reply free dma pool. + * @ioc: Adapter object + * @sz: DMA Pool size + * Return: 0 for success, non-zero for failure. + */ +static int +_base_allocate_reply_free_dma_pool(struct MPT3SAS_ADAPTER *ioc, u32 sz) +{ + /* reply free queue, 16 byte align */ + ioc->reply_free_dma_pool = dma_pool_create( + "reply_free pool", &ioc->pdev->dev, sz, 16, 0); + if (!ioc->reply_free_dma_pool) + return -ENOMEM; + ioc->reply_free = dma_pool_alloc(ioc->reply_free_dma_pool, + GFP_KERNEL, &ioc->reply_free_dma); + if (!ioc->reply_free) + return -EAGAIN; + if (!mpt3sas_check_same_4gb_region((long)ioc->reply_free, sz)) { + dinitprintk(ioc, + pr_err("Bad Reply Free Pool! Reply Free (0x%p) Reply Free dma = (0x%llx)\n", + ioc->reply_free, (unsigned long long) ioc->reply_free_dma)); + ioc->use_32bit_dma = true; + return -EAGAIN; + } + memset(ioc->reply_free, 0, sz); + dinitprintk(ioc, ioc_info(ioc, + "reply_free pool(0x%p): depth(%d), element_size(%d), pool_size(%d kB)\n", + ioc->reply_free, ioc->reply_free_queue_depth, 4, sz/1024)); + dinitprintk(ioc, ioc_info(ioc, + "reply_free_dma (0x%llx)\n", + (unsigned long long)ioc->reply_free_dma)); + return 0; +} + /** * base_alloc_rdpq_dma_pool - Allocating DMA'able memory * for reply queues. @@ -6051,29 +6087,18 @@ _base_allocate_memory_pools(struct MPT3SAS_ADAPTER *ioc) else if (rc == -EAGAIN) goto try_32bit_dma; total_sz += sz; + /* reply free queue, 16 byte align */ sz = ioc->reply_free_queue_depth * 4; - ioc->reply_free_dma_pool = dma_pool_create("reply_free pool", - &ioc->pdev->dev, sz, 16, 0); - if (!ioc->reply_free_dma_pool) { - ioc_err(ioc, "reply_free pool: dma_pool_create failed\n"); - goto out; - } - ioc->reply_free = dma_pool_zalloc(ioc->reply_free_dma_pool, GFP_KERNEL, - &ioc->reply_free_dma); - if (!ioc->reply_free) { - ioc_err(ioc, "reply_free pool: dma_pool_alloc failed\n"); - goto out; - } - dinitprintk(ioc, - ioc_info(ioc, "reply_free pool(0x%p): depth(%d), element_size(%d), pool_size(%d kB)\n", - ioc->reply_free, ioc->reply_free_queue_depth, - 4, sz / 1024)); + rc = _base_allocate_reply_free_dma_pool(ioc, sz); + if (rc == -ENOMEM) + return -ENOMEM; + else if (rc == -EAGAIN) + goto try_32bit_dma; dinitprintk(ioc, ioc_info(ioc, "reply_free_dma (0x%llx)\n", (unsigned long long)ioc->reply_free_dma)); total_sz += sz; - if (ioc->rdpq_array_enable) { reply_post_free_array_sz = ioc->reply_queue_count * sizeof(Mpi2IOCInitRDPQArrayEntry);