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=-18.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,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 58B3EC47E52 for ; Thu, 15 Jul 2021 16:46:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 46642613C7 for ; Thu, 15 Jul 2021 16:46:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234356AbhGOQtJ (ORCPT ); Thu, 15 Jul 2021 12:49:09 -0400 Received: from ale.deltatee.com ([204.191.154.188]:50060 "EHLO ale.deltatee.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234059AbhGOQtG (ORCPT ); Thu, 15 Jul 2021 12:49:06 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=deltatee.com; s=20200525; h=Subject:MIME-Version:References:In-Reply-To: Message-Id:Date:Cc:To:From:content-disposition; bh=bxYuYkexdgjCkkzv9UnzPxUCVLmS0/r9pZcrAxTBVsI=; b=Lss1AvtDz5LUXxNmZLvnEi5Xde zNsqlgc9Jfm+oTis6ayJermYtPQlSU7FExSZG7YxLDzVUAjV3EZgudpLjdA49a+pQ5IoaupAkmrUj MBmKsrcgEudrKKHqygKF9x1/h8OG9HCtnZ6ksLTzwkUmB6vGkrWUyKuQf2SwXUyj9EiP/h+4XMAeI 5942GhQ+bqkXDDvcsqx0b0E0wzNh4Dd0L/rKgGWHjBE4F1pg1VHlpxUpnp+SnapV7KhBrAH+jRe0k I5aj2hsoE9K9+DtJ37q/EQ4CjTJYY8q+bja6l5RiGMwjgqR841ENJ51Mn9zbG5mhOaFhmV7ciE2YO VNuGxQPg==; Received: from cgy1-donard.priv.deltatee.com ([172.16.1.31]) by ale.deltatee.com with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1m44Ux-0001ye-4e; Thu, 15 Jul 2021 10:46:08 -0600 Received: from gunthorp by cgy1-donard.priv.deltatee.com with local (Exim 4.92) (envelope-from ) id 1m44Up-0001nl-Il; Thu, 15 Jul 2021 10:45:59 -0600 From: Logan Gunthorpe To: linux-kernel@vger.kernel.org, linux-alpha@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-ia64@vger.kernel.org, linux-mips@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-s390@vger.kernel.org, sparclinux@vger.kernel.org, iommu@lists.linux-foundation.org, linux-parisc@vger.kernel.org, xen-devel@lists.xenproject.org Cc: Christoph Hellwig , Marek Szyprowski , Robin Murphy , Stephen Bates , Martin Oliveira , Logan Gunthorpe , Thomas Gleixner , Ingo Molnar , Borislav Petkov , "H. Peter Anvin" , Niklas Schnelle , Thomas Bogendoerfer , Michael Ellerman Date: Thu, 15 Jul 2021 10:45:42 -0600 Message-Id: <20210715164544.6827-15-logang@deltatee.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20210715164544.6827-1-logang@deltatee.com> References: <20210715164544.6827-1-logang@deltatee.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-SA-Exim-Connect-IP: 172.16.1.31 X-SA-Exim-Rcpt-To: linux-arm-kernel@lists.infradead.org, linuxppc-dev@lists.ozlabs.org, iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org, linux-alpha@vger.kernel.org, linux-ia64@vger.kernel.org, linux-mips@vger.kernel.org, linux-s390@vger.kernel.org, sparclinux@vger.kernel.org, linux-parisc@vger.kernel.org, xen-devel@lists.xenproject.org, hch@lst.de, m.szyprowski@samsung.com, robin.murphy@arm.com, sbates@raithlin.com, martin.oliveira@eideticom.com, logang@deltatee.com, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, hpa@zytor.com, schnelle@linux.ibm.com, tsbogend@alpha.franken.de, mpe@ellerman.id.au X-SA-Exim-Mail-From: gunthorp@deltatee.com Subject: [PATCH v1 14/16] x86/amd_gart: return error code from gart_map_sg() X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on ale.deltatee.com) Precedence: bulk List-ID: X-Mailing-List: linux-parisc@vger.kernel.org From: Martin Oliveira The .map_sg() op now expects an error code instead of zero on failure. So make __dma_map_cont() return a valid errno (which is then propagated to gart_map_sg() via dma_map_cont()) and return it in case of failure. Also, return -EINVAL in case of invalid nents. Signed-off-by: Martin Oliveira Signed-off-by: Logan Gunthorpe Cc: Thomas Gleixner Cc: Ingo Molnar Cc: Borislav Petkov Cc: "H. Peter Anvin" Cc: Niklas Schnelle Cc: Thomas Bogendoerfer Cc: Michael Ellerman --- arch/x86/kernel/amd_gart_64.c | 16 +++++++++------- 1 file changed, 9 insertions(+), 7 deletions(-) diff --git a/arch/x86/kernel/amd_gart_64.c b/arch/x86/kernel/amd_gart_64.c index 9ac696487b13..46aea9a4f26b 100644 --- a/arch/x86/kernel/amd_gart_64.c +++ b/arch/x86/kernel/amd_gart_64.c @@ -331,7 +331,7 @@ static int __dma_map_cont(struct device *dev, struct scatterlist *start, int i; if (iommu_start == -1) - return -1; + return -ENOMEM; for_each_sg(start, s, nelems, i) { unsigned long pages, addr; @@ -380,13 +380,13 @@ static int gart_map_sg(struct device *dev, struct scatterlist *sg, int nents, enum dma_data_direction dir, unsigned long attrs) { struct scatterlist *s, *ps, *start_sg, *sgmap; - int need = 0, nextneed, i, out, start; + int need = 0, nextneed, i, out, start, ret; unsigned long pages = 0; unsigned int seg_size; unsigned int max_seg_size; if (nents == 0) - return 0; + return -EINVAL; out = 0; start = 0; @@ -414,8 +414,9 @@ static int gart_map_sg(struct device *dev, struct scatterlist *sg, int nents, if (!iommu_merge || !nextneed || !need || s->offset || (s->length + seg_size > max_seg_size) || (ps->offset + ps->length) % PAGE_SIZE) { - if (dma_map_cont(dev, start_sg, i - start, - sgmap, pages, need) < 0) + ret = dma_map_cont(dev, start_sg, i - start, + sgmap, pages, need); + if (ret < 0) goto error; out++; @@ -432,7 +433,8 @@ static int gart_map_sg(struct device *dev, struct scatterlist *sg, int nents, pages += iommu_num_pages(s->offset, s->length, PAGE_SIZE); ps = s; } - if (dma_map_cont(dev, start_sg, i - start, sgmap, pages, need) < 0) + ret = dma_map_cont(dev, start_sg, i - start, sgmap, pages, need); + if (ret < 0) goto error; out++; flush_gart(); @@ -458,7 +460,7 @@ static int gart_map_sg(struct device *dev, struct scatterlist *sg, int nents, iommu_full(dev, pages << PAGE_SHIFT, dir); for_each_sg(sg, s, nents, i) s->dma_address = DMA_MAPPING_ERROR; - return 0; + return ret; } /* allocate and map a coherent mapping */ -- 2.20.1 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=-16.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,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 41A9DC5CFC2 for ; Thu, 15 Jul 2021 17:21:06 +0000 (UTC) Received: from lists.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 8C498613C3 for ; Thu, 15 Jul 2021 17:21:05 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 8C498613C3 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=deltatee.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Received: from boromir.ozlabs.org (localhost [IPv6:::1]) by lists.ozlabs.org (Postfix) with ESMTP id 4GQh3h1kV5z3cdP for ; Fri, 16 Jul 2021 03:21:04 +1000 (AEST) Authentication-Results: lists.ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=deltatee.com header.i=@deltatee.com header.a=rsa-sha256 header.s=20200525 header.b=Lss1AvtD; dkim-atps=neutral Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=deltatee.com (client-ip=204.191.154.188; helo=ale.deltatee.com; envelope-from=gunthorp@deltatee.com; receiver=) Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=deltatee.com header.i=@deltatee.com header.a=rsa-sha256 header.s=20200525 header.b=Lss1AvtD; dkim-atps=neutral Received: from ale.deltatee.com (ale.deltatee.com [204.191.154.188]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (P-256) server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4GQgyN2Hqmz3bhp for ; Fri, 16 Jul 2021 03:16:28 +1000 (AEST) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=deltatee.com; s=20200525; h=Subject:MIME-Version:References:In-Reply-To: Message-Id:Date:Cc:To:From:content-disposition; bh=bxYuYkexdgjCkkzv9UnzPxUCVLmS0/r9pZcrAxTBVsI=; b=Lss1AvtDz5LUXxNmZLvnEi5Xde zNsqlgc9Jfm+oTis6ayJermYtPQlSU7FExSZG7YxLDzVUAjV3EZgudpLjdA49a+pQ5IoaupAkmrUj MBmKsrcgEudrKKHqygKF9x1/h8OG9HCtnZ6ksLTzwkUmB6vGkrWUyKuQf2SwXUyj9EiP/h+4XMAeI 5942GhQ+bqkXDDvcsqx0b0E0wzNh4Dd0L/rKgGWHjBE4F1pg1VHlpxUpnp+SnapV7KhBrAH+jRe0k I5aj2hsoE9K9+DtJ37q/EQ4CjTJYY8q+bja6l5RiGMwjgqR841ENJ51Mn9zbG5mhOaFhmV7ciE2YO VNuGxQPg==; Received: from cgy1-donard.priv.deltatee.com ([172.16.1.31]) by ale.deltatee.com with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1m44Ux-0001ye-4e; Thu, 15 Jul 2021 10:46:08 -0600 Received: from gunthorp by cgy1-donard.priv.deltatee.com with local (Exim 4.92) (envelope-from ) id 1m44Up-0001nl-Il; Thu, 15 Jul 2021 10:45:59 -0600 From: Logan Gunthorpe To: linux-kernel@vger.kernel.org, linux-alpha@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-ia64@vger.kernel.org, linux-mips@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-s390@vger.kernel.org, sparclinux@vger.kernel.org, iommu@lists.linux-foundation.org, linux-parisc@vger.kernel.org, xen-devel@lists.xenproject.org Date: Thu, 15 Jul 2021 10:45:42 -0600 Message-Id: <20210715164544.6827-15-logang@deltatee.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20210715164544.6827-1-logang@deltatee.com> References: <20210715164544.6827-1-logang@deltatee.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-SA-Exim-Connect-IP: 172.16.1.31 X-SA-Exim-Rcpt-To: linux-arm-kernel@lists.infradead.org, linuxppc-dev@lists.ozlabs.org, iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org, linux-alpha@vger.kernel.org, linux-ia64@vger.kernel.org, linux-mips@vger.kernel.org, linux-s390@vger.kernel.org, sparclinux@vger.kernel.org, linux-parisc@vger.kernel.org, xen-devel@lists.xenproject.org, hch@lst.de, m.szyprowski@samsung.com, robin.murphy@arm.com, sbates@raithlin.com, martin.oliveira@eideticom.com, logang@deltatee.com, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, hpa@zytor.com, schnelle@linux.ibm.com, tsbogend@alpha.franken.de, mpe@ellerman.id.au X-SA-Exim-Mail-From: gunthorp@deltatee.com Subject: [PATCH v1 14/16] x86/amd_gart: return error code from gart_map_sg() X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on ale.deltatee.com) X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Thomas Bogendoerfer , Niklas Schnelle , Robin Murphy , Martin Oliveira , Stephen Bates , Ingo Molnar , Borislav Petkov , "H. Peter Anvin" , Thomas Gleixner , Logan Gunthorpe , Christoph Hellwig , Marek Szyprowski Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" From: Martin Oliveira The .map_sg() op now expects an error code instead of zero on failure. So make __dma_map_cont() return a valid errno (which is then propagated to gart_map_sg() via dma_map_cont()) and return it in case of failure. Also, return -EINVAL in case of invalid nents. Signed-off-by: Martin Oliveira Signed-off-by: Logan Gunthorpe Cc: Thomas Gleixner Cc: Ingo Molnar Cc: Borislav Petkov Cc: "H. Peter Anvin" Cc: Niklas Schnelle Cc: Thomas Bogendoerfer Cc: Michael Ellerman --- arch/x86/kernel/amd_gart_64.c | 16 +++++++++------- 1 file changed, 9 insertions(+), 7 deletions(-) diff --git a/arch/x86/kernel/amd_gart_64.c b/arch/x86/kernel/amd_gart_64.c index 9ac696487b13..46aea9a4f26b 100644 --- a/arch/x86/kernel/amd_gart_64.c +++ b/arch/x86/kernel/amd_gart_64.c @@ -331,7 +331,7 @@ static int __dma_map_cont(struct device *dev, struct scatterlist *start, int i; if (iommu_start == -1) - return -1; + return -ENOMEM; for_each_sg(start, s, nelems, i) { unsigned long pages, addr; @@ -380,13 +380,13 @@ static int gart_map_sg(struct device *dev, struct scatterlist *sg, int nents, enum dma_data_direction dir, unsigned long attrs) { struct scatterlist *s, *ps, *start_sg, *sgmap; - int need = 0, nextneed, i, out, start; + int need = 0, nextneed, i, out, start, ret; unsigned long pages = 0; unsigned int seg_size; unsigned int max_seg_size; if (nents == 0) - return 0; + return -EINVAL; out = 0; start = 0; @@ -414,8 +414,9 @@ static int gart_map_sg(struct device *dev, struct scatterlist *sg, int nents, if (!iommu_merge || !nextneed || !need || s->offset || (s->length + seg_size > max_seg_size) || (ps->offset + ps->length) % PAGE_SIZE) { - if (dma_map_cont(dev, start_sg, i - start, - sgmap, pages, need) < 0) + ret = dma_map_cont(dev, start_sg, i - start, + sgmap, pages, need); + if (ret < 0) goto error; out++; @@ -432,7 +433,8 @@ static int gart_map_sg(struct device *dev, struct scatterlist *sg, int nents, pages += iommu_num_pages(s->offset, s->length, PAGE_SIZE); ps = s; } - if (dma_map_cont(dev, start_sg, i - start, sgmap, pages, need) < 0) + ret = dma_map_cont(dev, start_sg, i - start, sgmap, pages, need); + if (ret < 0) goto error; out++; flush_gart(); @@ -458,7 +460,7 @@ static int gart_map_sg(struct device *dev, struct scatterlist *sg, int nents, iommu_full(dev, pages << PAGE_SHIFT, dir); for_each_sg(sg, s, nents, i) s->dma_address = DMA_MAPPING_ERROR; - return 0; + return ret; } /* allocate and map a coherent mapping */ -- 2.20.1 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=-16.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,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 EDE42C636C7 for ; Thu, 15 Jul 2021 17:16:30 +0000 (UTC) Received: from smtp2.osuosl.org (smtp2.osuosl.org [140.211.166.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id AFF58613C7 for ; Thu, 15 Jul 2021 17:16:30 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org AFF58613C7 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=deltatee.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=iommu-bounces@lists.linux-foundation.org Received: from localhost (localhost [127.0.0.1]) by smtp2.osuosl.org (Postfix) with ESMTP id 87E9A40E5D; Thu, 15 Jul 2021 17:16:30 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from smtp2.osuosl.org ([127.0.0.1]) by localhost (smtp2.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id CPl3xok42jix; Thu, 15 Jul 2021 17:16:29 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [IPv6:2605:bc80:3010:104::8cd3:938]) by smtp2.osuosl.org (Postfix) with ESMTPS id 3CF2D403CD; Thu, 15 Jul 2021 17:16:29 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id 0C776C001C; Thu, 15 Jul 2021 17:16:29 +0000 (UTC) Received: from smtp1.osuosl.org (smtp1.osuosl.org [140.211.166.138]) by lists.linuxfoundation.org (Postfix) with ESMTP id 6F622C000E for ; Thu, 15 Jul 2021 17:16:27 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp1.osuosl.org (Postfix) with ESMTP id 6C0E283FAA for ; Thu, 15 Jul 2021 17:16:27 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Authentication-Results: smtp1.osuosl.org (amavisd-new); dkim=pass (2048-bit key) header.d=deltatee.com Received: from smtp1.osuosl.org ([127.0.0.1]) by localhost (smtp1.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id EpWh-ZReVSk9 for ; Thu, 15 Jul 2021 17:16:26 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey-1.8.0 Received: from ale.deltatee.com (ale.deltatee.com [204.191.154.188]) by smtp1.osuosl.org (Postfix) with ESMTPS id D6FC883FC8 for ; Thu, 15 Jul 2021 17:16:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=deltatee.com; s=20200525; h=Subject:MIME-Version:References:In-Reply-To: Message-Id:Date:Cc:To:From:content-disposition; bh=bxYuYkexdgjCkkzv9UnzPxUCVLmS0/r9pZcrAxTBVsI=; b=Lss1AvtDz5LUXxNmZLvnEi5Xde zNsqlgc9Jfm+oTis6ayJermYtPQlSU7FExSZG7YxLDzVUAjV3EZgudpLjdA49a+pQ5IoaupAkmrUj MBmKsrcgEudrKKHqygKF9x1/h8OG9HCtnZ6ksLTzwkUmB6vGkrWUyKuQf2SwXUyj9EiP/h+4XMAeI 5942GhQ+bqkXDDvcsqx0b0E0wzNh4Dd0L/rKgGWHjBE4F1pg1VHlpxUpnp+SnapV7KhBrAH+jRe0k I5aj2hsoE9K9+DtJ37q/EQ4CjTJYY8q+bja6l5RiGMwjgqR841ENJ51Mn9zbG5mhOaFhmV7ciE2YO VNuGxQPg==; Received: from cgy1-donard.priv.deltatee.com ([172.16.1.31]) by ale.deltatee.com with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1m44Ux-0001ye-4e; Thu, 15 Jul 2021 10:46:08 -0600 Received: from gunthorp by cgy1-donard.priv.deltatee.com with local (Exim 4.92) (envelope-from ) id 1m44Up-0001nl-Il; Thu, 15 Jul 2021 10:45:59 -0600 From: Logan Gunthorpe To: linux-kernel@vger.kernel.org, linux-alpha@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-ia64@vger.kernel.org, linux-mips@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-s390@vger.kernel.org, sparclinux@vger.kernel.org, iommu@lists.linux-foundation.org, linux-parisc@vger.kernel.org, xen-devel@lists.xenproject.org Date: Thu, 15 Jul 2021 10:45:42 -0600 Message-Id: <20210715164544.6827-15-logang@deltatee.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20210715164544.6827-1-logang@deltatee.com> References: <20210715164544.6827-1-logang@deltatee.com> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 172.16.1.31 X-SA-Exim-Rcpt-To: linux-arm-kernel@lists.infradead.org, linuxppc-dev@lists.ozlabs.org, iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org, linux-alpha@vger.kernel.org, linux-ia64@vger.kernel.org, linux-mips@vger.kernel.org, linux-s390@vger.kernel.org, sparclinux@vger.kernel.org, linux-parisc@vger.kernel.org, xen-devel@lists.xenproject.org, hch@lst.de, m.szyprowski@samsung.com, robin.murphy@arm.com, sbates@raithlin.com, martin.oliveira@eideticom.com, logang@deltatee.com, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, hpa@zytor.com, schnelle@linux.ibm.com, tsbogend@alpha.franken.de, mpe@ellerman.id.au X-SA-Exim-Mail-From: gunthorp@deltatee.com Subject: [PATCH v1 14/16] x86/amd_gart: return error code from gart_map_sg() X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on ale.deltatee.com) Cc: Thomas Bogendoerfer , Niklas Schnelle , Robin Murphy , Martin Oliveira , Stephen Bates , Ingo Molnar , Borislav Petkov , Michael Ellerman , "H. Peter Anvin" , Thomas Gleixner , Logan Gunthorpe , Christoph Hellwig X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Development issues for Linux IOMMU support List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" From: Martin Oliveira The .map_sg() op now expects an error code instead of zero on failure. So make __dma_map_cont() return a valid errno (which is then propagated to gart_map_sg() via dma_map_cont()) and return it in case of failure. Also, return -EINVAL in case of invalid nents. Signed-off-by: Martin Oliveira Signed-off-by: Logan Gunthorpe Cc: Thomas Gleixner Cc: Ingo Molnar Cc: Borislav Petkov Cc: "H. Peter Anvin" Cc: Niklas Schnelle Cc: Thomas Bogendoerfer Cc: Michael Ellerman --- arch/x86/kernel/amd_gart_64.c | 16 +++++++++------- 1 file changed, 9 insertions(+), 7 deletions(-) diff --git a/arch/x86/kernel/amd_gart_64.c b/arch/x86/kernel/amd_gart_64.c index 9ac696487b13..46aea9a4f26b 100644 --- a/arch/x86/kernel/amd_gart_64.c +++ b/arch/x86/kernel/amd_gart_64.c @@ -331,7 +331,7 @@ static int __dma_map_cont(struct device *dev, struct scatterlist *start, int i; if (iommu_start == -1) - return -1; + return -ENOMEM; for_each_sg(start, s, nelems, i) { unsigned long pages, addr; @@ -380,13 +380,13 @@ static int gart_map_sg(struct device *dev, struct scatterlist *sg, int nents, enum dma_data_direction dir, unsigned long attrs) { struct scatterlist *s, *ps, *start_sg, *sgmap; - int need = 0, nextneed, i, out, start; + int need = 0, nextneed, i, out, start, ret; unsigned long pages = 0; unsigned int seg_size; unsigned int max_seg_size; if (nents == 0) - return 0; + return -EINVAL; out = 0; start = 0; @@ -414,8 +414,9 @@ static int gart_map_sg(struct device *dev, struct scatterlist *sg, int nents, if (!iommu_merge || !nextneed || !need || s->offset || (s->length + seg_size > max_seg_size) || (ps->offset + ps->length) % PAGE_SIZE) { - if (dma_map_cont(dev, start_sg, i - start, - sgmap, pages, need) < 0) + ret = dma_map_cont(dev, start_sg, i - start, + sgmap, pages, need); + if (ret < 0) goto error; out++; @@ -432,7 +433,8 @@ static int gart_map_sg(struct device *dev, struct scatterlist *sg, int nents, pages += iommu_num_pages(s->offset, s->length, PAGE_SIZE); ps = s; } - if (dma_map_cont(dev, start_sg, i - start, sgmap, pages, need) < 0) + ret = dma_map_cont(dev, start_sg, i - start, sgmap, pages, need); + if (ret < 0) goto error; out++; flush_gart(); @@ -458,7 +460,7 @@ static int gart_map_sg(struct device *dev, struct scatterlist *sg, int nents, iommu_full(dev, pages << PAGE_SHIFT, dir); for_each_sg(sg, s, nents, i) s->dma_address = DMA_MAPPING_ERROR; - return 0; + return ret; } /* allocate and map a coherent mapping */ -- 2.20.1 _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu 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=-17.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, 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 D128AC07E96 for ; Thu, 15 Jul 2021 16:53:10 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 994CB613E9 for ; Thu, 15 Jul 2021 16:53:10 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 994CB613E9 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=deltatee.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:Subject:MIME-Version:References: In-Reply-To:Message-Id:Date:Cc:To:From:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Owner; bh=+iQmUuHskJ4XSz0shH3A69xJkxjoaEUDr1c5obbR30k=; b=wPQ72TFoxz0QTemc8njhypRTwI wU6rfmMFvklXjwqL7vLvnrLkzpr1OyM07pEIF+Kg9Gm1oiH4plAbDM82VkMikwjP9Dg67IxF6gkEq kmDBNB+eyQCZFjPwl6A3B97X4K0Uqi914AocVRhtO9g4lxDtHkY9UcZ6PE5xwBV+M67RpuErDXdEN nW9SWHESe4yxxvnDktVRGD9Wqyd6QOlNmdW+7x91gtetTJUnD853ziXnuTh4qBtEwW8ocvC9jP1Vg 8iDSdqO0qQrTYy8uBTXxXfaBuoLFwsCuXCcddf1XVmzdm84fohzDRjXINJZdzW/gKb1CVkd5r2Zvx lW7i14Rg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1m44Zh-001VRx-7r; Thu, 15 Jul 2021 16:51:01 +0000 Received: from ale.deltatee.com ([204.191.154.188]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1m44Uz-001TMb-FS for linux-arm-kernel@lists.infradead.org; Thu, 15 Jul 2021 16:46:12 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=deltatee.com; s=20200525; h=Subject:MIME-Version:References:In-Reply-To: Message-Id:Date:Cc:To:From:content-disposition; bh=bxYuYkexdgjCkkzv9UnzPxUCVLmS0/r9pZcrAxTBVsI=; b=Lss1AvtDz5LUXxNmZLvnEi5Xde zNsqlgc9Jfm+oTis6ayJermYtPQlSU7FExSZG7YxLDzVUAjV3EZgudpLjdA49a+pQ5IoaupAkmrUj MBmKsrcgEudrKKHqygKF9x1/h8OG9HCtnZ6ksLTzwkUmB6vGkrWUyKuQf2SwXUyj9EiP/h+4XMAeI 5942GhQ+bqkXDDvcsqx0b0E0wzNh4Dd0L/rKgGWHjBE4F1pg1VHlpxUpnp+SnapV7KhBrAH+jRe0k I5aj2hsoE9K9+DtJ37q/EQ4CjTJYY8q+bja6l5RiGMwjgqR841ENJ51Mn9zbG5mhOaFhmV7ciE2YO VNuGxQPg==; Received: from cgy1-donard.priv.deltatee.com ([172.16.1.31]) by ale.deltatee.com with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1m44Ux-0001ye-4e; Thu, 15 Jul 2021 10:46:08 -0600 Received: from gunthorp by cgy1-donard.priv.deltatee.com with local (Exim 4.92) (envelope-from ) id 1m44Up-0001nl-Il; Thu, 15 Jul 2021 10:45:59 -0600 From: Logan Gunthorpe To: linux-kernel@vger.kernel.org, linux-alpha@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-ia64@vger.kernel.org, linux-mips@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-s390@vger.kernel.org, sparclinux@vger.kernel.org, iommu@lists.linux-foundation.org, linux-parisc@vger.kernel.org, xen-devel@lists.xenproject.org Cc: Christoph Hellwig , Marek Szyprowski , Robin Murphy , Stephen Bates , Martin Oliveira , Logan Gunthorpe , Thomas Gleixner , Ingo Molnar , Borislav Petkov , "H. Peter Anvin" , Niklas Schnelle , Thomas Bogendoerfer , Michael Ellerman Date: Thu, 15 Jul 2021 10:45:42 -0600 Message-Id: <20210715164544.6827-15-logang@deltatee.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20210715164544.6827-1-logang@deltatee.com> References: <20210715164544.6827-1-logang@deltatee.com> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 172.16.1.31 X-SA-Exim-Rcpt-To: linux-arm-kernel@lists.infradead.org, linuxppc-dev@lists.ozlabs.org, iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org, linux-alpha@vger.kernel.org, linux-ia64@vger.kernel.org, linux-mips@vger.kernel.org, linux-s390@vger.kernel.org, sparclinux@vger.kernel.org, linux-parisc@vger.kernel.org, xen-devel@lists.xenproject.org, hch@lst.de, m.szyprowski@samsung.com, robin.murphy@arm.com, sbates@raithlin.com, martin.oliveira@eideticom.com, logang@deltatee.com, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, hpa@zytor.com, schnelle@linux.ibm.com, tsbogend@alpha.franken.de, mpe@ellerman.id.au X-SA-Exim-Mail-From: gunthorp@deltatee.com Subject: [PATCH v1 14/16] x86/amd_gart: return error code from gart_map_sg() X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on ale.deltatee.com) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210715_094609_607710_AD1869B4 X-CRM114-Status: GOOD ( 16.52 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: Martin Oliveira The .map_sg() op now expects an error code instead of zero on failure. So make __dma_map_cont() return a valid errno (which is then propagated to gart_map_sg() via dma_map_cont()) and return it in case of failure. Also, return -EINVAL in case of invalid nents. Signed-off-by: Martin Oliveira Signed-off-by: Logan Gunthorpe Cc: Thomas Gleixner Cc: Ingo Molnar Cc: Borislav Petkov Cc: "H. Peter Anvin" Cc: Niklas Schnelle Cc: Thomas Bogendoerfer Cc: Michael Ellerman --- arch/x86/kernel/amd_gart_64.c | 16 +++++++++------- 1 file changed, 9 insertions(+), 7 deletions(-) diff --git a/arch/x86/kernel/amd_gart_64.c b/arch/x86/kernel/amd_gart_64.c index 9ac696487b13..46aea9a4f26b 100644 --- a/arch/x86/kernel/amd_gart_64.c +++ b/arch/x86/kernel/amd_gart_64.c @@ -331,7 +331,7 @@ static int __dma_map_cont(struct device *dev, struct scatterlist *start, int i; if (iommu_start == -1) - return -1; + return -ENOMEM; for_each_sg(start, s, nelems, i) { unsigned long pages, addr; @@ -380,13 +380,13 @@ static int gart_map_sg(struct device *dev, struct scatterlist *sg, int nents, enum dma_data_direction dir, unsigned long attrs) { struct scatterlist *s, *ps, *start_sg, *sgmap; - int need = 0, nextneed, i, out, start; + int need = 0, nextneed, i, out, start, ret; unsigned long pages = 0; unsigned int seg_size; unsigned int max_seg_size; if (nents == 0) - return 0; + return -EINVAL; out = 0; start = 0; @@ -414,8 +414,9 @@ static int gart_map_sg(struct device *dev, struct scatterlist *sg, int nents, if (!iommu_merge || !nextneed || !need || s->offset || (s->length + seg_size > max_seg_size) || (ps->offset + ps->length) % PAGE_SIZE) { - if (dma_map_cont(dev, start_sg, i - start, - sgmap, pages, need) < 0) + ret = dma_map_cont(dev, start_sg, i - start, + sgmap, pages, need); + if (ret < 0) goto error; out++; @@ -432,7 +433,8 @@ static int gart_map_sg(struct device *dev, struct scatterlist *sg, int nents, pages += iommu_num_pages(s->offset, s->length, PAGE_SIZE); ps = s; } - if (dma_map_cont(dev, start_sg, i - start, sgmap, pages, need) < 0) + ret = dma_map_cont(dev, start_sg, i - start, sgmap, pages, need); + if (ret < 0) goto error; out++; flush_gart(); @@ -458,7 +460,7 @@ static int gart_map_sg(struct device *dev, struct scatterlist *sg, int nents, iommu_full(dev, pages << PAGE_SHIFT, dir); for_each_sg(sg, s, nents, i) s->dma_address = DMA_MAPPING_ERROR; - return 0; + return ret; } /* allocate and map a coherent mapping */ -- 2.20.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel From mboxrd@z Thu Jan 1 00:00:00 1970 From: Logan Gunthorpe Date: Thu, 15 Jul 2021 16:45:42 +0000 Subject: [PATCH v1 14/16] x86/amd_gart: return error code from gart_map_sg() Message-Id: <20210715164544.6827-15-logang@deltatee.com> List-Id: References: <20210715164544.6827-1-logang@deltatee.com> In-Reply-To: <20210715164544.6827-1-logang@deltatee.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-kernel@vger.kernel.org, linux-alpha@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-ia64@vger.kernel.org, linux-mips@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-s390@vger.kernel.org, sparclinux@vger.kernel.org, iommu@lists.linux-foundation.org, linux-parisc@vger.kernel.org, xen-devel@lists.xenproject.org Cc: Christoph Hellwig , Marek Szyprowski , Robin Murphy , Stephen Bates , Martin Oliveira , Logan Gunthorpe , Thomas Gleixner , Ingo Molnar , Borislav Petkov , "H. Peter Anvin" , Niklas Schnelle , Thomas Bogendoerfer , Michael Ellerman From: Martin Oliveira The .map_sg() op now expects an error code instead of zero on failure. So make __dma_map_cont() return a valid errno (which is then propagated to gart_map_sg() via dma_map_cont()) and return it in case of failure. Also, return -EINVAL in case of invalid nents. Signed-off-by: Martin Oliveira Signed-off-by: Logan Gunthorpe Cc: Thomas Gleixner Cc: Ingo Molnar Cc: Borislav Petkov Cc: "H. Peter Anvin" Cc: Niklas Schnelle Cc: Thomas Bogendoerfer Cc: Michael Ellerman --- arch/x86/kernel/amd_gart_64.c | 16 +++++++++------- 1 file changed, 9 insertions(+), 7 deletions(-) diff --git a/arch/x86/kernel/amd_gart_64.c b/arch/x86/kernel/amd_gart_64.c index 9ac696487b13..46aea9a4f26b 100644 --- a/arch/x86/kernel/amd_gart_64.c +++ b/arch/x86/kernel/amd_gart_64.c @@ -331,7 +331,7 @@ static int __dma_map_cont(struct device *dev, struct scatterlist *start, int i; if (iommu_start = -1) - return -1; + return -ENOMEM; for_each_sg(start, s, nelems, i) { unsigned long pages, addr; @@ -380,13 +380,13 @@ static int gart_map_sg(struct device *dev, struct scatterlist *sg, int nents, enum dma_data_direction dir, unsigned long attrs) { struct scatterlist *s, *ps, *start_sg, *sgmap; - int need = 0, nextneed, i, out, start; + int need = 0, nextneed, i, out, start, ret; unsigned long pages = 0; unsigned int seg_size; unsigned int max_seg_size; if (nents = 0) - return 0; + return -EINVAL; out = 0; start = 0; @@ -414,8 +414,9 @@ static int gart_map_sg(struct device *dev, struct scatterlist *sg, int nents, if (!iommu_merge || !nextneed || !need || s->offset || (s->length + seg_size > max_seg_size) || (ps->offset + ps->length) % PAGE_SIZE) { - if (dma_map_cont(dev, start_sg, i - start, - sgmap, pages, need) < 0) + ret = dma_map_cont(dev, start_sg, i - start, + sgmap, pages, need); + if (ret < 0) goto error; out++; @@ -432,7 +433,8 @@ static int gart_map_sg(struct device *dev, struct scatterlist *sg, int nents, pages += iommu_num_pages(s->offset, s->length, PAGE_SIZE); ps = s; } - if (dma_map_cont(dev, start_sg, i - start, sgmap, pages, need) < 0) + ret = dma_map_cont(dev, start_sg, i - start, sgmap, pages, need); + if (ret < 0) goto error; out++; flush_gart(); @@ -458,7 +460,7 @@ static int gart_map_sg(struct device *dev, struct scatterlist *sg, int nents, iommu_full(dev, pages << PAGE_SHIFT, dir); for_each_sg(sg, s, nents, i) s->dma_address = DMA_MAPPING_ERROR; - return 0; + return ret; } /* allocate and map a coherent mapping */ -- 2.20.1