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=-8.8 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_PASS,URIBL_BLOCKED,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 BD2A4C43441 for ; Wed, 14 Nov 2018 09:32:48 +0000 (UTC) Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2]) (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 3FE55223DD for ; Wed, 14 Nov 2018 09:32:48 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="cQ9GYtD3" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 3FE55223DD Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 42vzmt1QWyzF3BS for ; Wed, 14 Nov 2018 20:32:46 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=lst.de Authentication-Results: lists.ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=infradead.org header.i=@infradead.org header.b="cQ9GYtD3"; dkim-atps=neutral Authentication-Results: lists.ozlabs.org; spf=none (mailfrom) smtp.mailfrom=bombadil.srs.infradead.org (client-ip=2607:7c80:54:e::133; helo=bombadil.infradead.org; envelope-from=batv+ddbc6e1cf1a82b64ebec+5561+infradead.org+hch@bombadil.srs.infradead.org; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=lst.de Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=infradead.org header.i=@infradead.org header.b="cQ9GYtD3"; dkim-atps=neutral Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:e::133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 42vyGc0dm0zF3Kl for ; Wed, 14 Nov 2018 19:24:56 +1100 (AEDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20170209; 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:Resent-Date:Resent-From :Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help: List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=viEKh4BP6N6rz2lADj2u/mOfweh0bRNAdHsJIfS2hmY=; b=cQ9GYtD3RVVBHD8f/Wxz4OhAT5 rVGlSKVVdgFMJJulJOvhqgBawoY541vvTthVTpDDgeYkDPlZAf2O3HydL9jtIz0RtQjyIClMG/s8I 3BajA/KnfPZXPZ5sQTY7SCYvCur+NFCoDGN4gSfUVvD0ZCcfRa091LGJaGHPQmu65X4fcez5ilDxv 78n9XAnOUJGjlsCieOJz8nRSdKvSuCE+ucQ2MjC+SDlH36nmbKhRrCLjkr+yO5Eq3US9u+5KFIAR2 2plIBS6g4Zf0vcZ4pL2WmnLEEHWgwWBB2oFIQlWmfhCkuJa2WaQcyzDjEu4zc/58TPwdhIGkO6MYk QpBDb/Xw==; Received: from 089144211136.atnat0020.highway.a1.net ([89.144.211.136] helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.90_1 #2 (Red Hat Linux)) id 1gMqTR-00055a-Db; Wed, 14 Nov 2018 08:24:33 +0000 From: Christoph Hellwig To: Benjamin Herrenschmidt , Paul Mackerras , Michael Ellerman Subject: [PATCH 28/34] dma-mapping, powerpc: simplify the arch dma_set_mask override Date: Wed, 14 Nov 2018 09:23:08 +0100 Message-Id: <20181114082314.8965-29-hch@lst.de> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20181114082314.8965-1-hch@lst.de> References: <20181114082314.8965-1-hch@lst.de> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html 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: linux-arch@vger.kernel.org, linux-mm@kvack.org, iommu@lists.linux-foundation.org, linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" Instead of letting the architecture supply all of dma_set_mask just give it an additional hook selected by Kconfig. Signed-off-by: Christoph Hellwig --- arch/powerpc/Kconfig | 1 + arch/powerpc/include/asm/dma-mapping.h | 3 --- arch/powerpc/kernel/dma-swiotlb.c | 8 ++++++++ arch/powerpc/kernel/dma.c | 12 ------------ arch/powerpc/sysdev/fsl_pci.c | 4 ---- include/linux/dma-mapping.h | 11 ++++++++--- kernel/dma/Kconfig | 3 +++ 7 files changed, 20 insertions(+), 22 deletions(-) diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index 2d4a19bc8023..4f03997ad54a 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -126,6 +126,7 @@ config PPC # Please keep this list sorted alphabetically. # select ARCH_HAS_DEVMEM_IS_ALLOWED + select ARCH_HAS_DMA_SET_MASK if SWIOTLB select ARCH_HAS_ELF_RANDOMIZE select ARCH_HAS_FORTIFY_SOURCE select ARCH_HAS_GCOV_PROFILE_ALL diff --git a/arch/powerpc/include/asm/dma-mapping.h b/arch/powerpc/include/asm/dma-mapping.h index e5ee4ac97c14..16d45518d9bb 100644 --- a/arch/powerpc/include/asm/dma-mapping.h +++ b/arch/powerpc/include/asm/dma-mapping.h @@ -110,8 +110,5 @@ static inline void set_dma_offset(struct device *dev, dma_addr_t off) dev->archdata.dma_offset = off; } -#define HAVE_ARCH_DMA_SET_MASK 1 -extern int dma_set_mask(struct device *dev, u64 dma_mask); - #endif /* __KERNEL__ */ #endif /* _ASM_DMA_MAPPING_H */ diff --git a/arch/powerpc/kernel/dma-swiotlb.c b/arch/powerpc/kernel/dma-swiotlb.c index 62caa16b91a9..b3266f7a6915 100644 --- a/arch/powerpc/kernel/dma-swiotlb.c +++ b/arch/powerpc/kernel/dma-swiotlb.c @@ -22,6 +22,14 @@ #include #include +bool arch_dma_set_mask(struct device *dev, u64 dma_mask) +{ + if (!ppc_md.dma_set_mask) + return 0; + return ppc_md.dma_set_mask(dev, dma_mask); +} +EXPORT_SYMBOL(arch_dma_set_mask); + unsigned int ppc_swiotlb_enable; /* diff --git a/arch/powerpc/kernel/dma.c b/arch/powerpc/kernel/dma.c index 59f38ca3975c..cf0ae0b3fb24 100644 --- a/arch/powerpc/kernel/dma.c +++ b/arch/powerpc/kernel/dma.c @@ -209,18 +209,6 @@ const struct dma_map_ops dma_nommu_ops = { }; EXPORT_SYMBOL(dma_nommu_ops); -int dma_set_mask(struct device *dev, u64 dma_mask) -{ - if (ppc_md.dma_set_mask) - return ppc_md.dma_set_mask(dev, dma_mask); - - if (!dev->dma_mask || !dma_supported(dev, dma_mask)) - return -EIO; - *dev->dma_mask = dma_mask; - return 0; -} -EXPORT_SYMBOL(dma_set_mask); - static int __init dma_init(void) { #ifdef CONFIG_IBMVIO diff --git a/arch/powerpc/sysdev/fsl_pci.c b/arch/powerpc/sysdev/fsl_pci.c index 296ffabc9386..cb91a3d113d1 100644 --- a/arch/powerpc/sysdev/fsl_pci.c +++ b/arch/powerpc/sysdev/fsl_pci.c @@ -135,9 +135,6 @@ static inline void setup_swiotlb_ops(struct pci_controller *hose) {} static int fsl_pci_dma_set_mask(struct device *dev, u64 dma_mask) { - if (!dev->dma_mask || !dma_supported(dev, dma_mask)) - return -EIO; - /* * Fix up PCI devices that are able to DMA to the large inbound * mapping that allows addressing any RAM address from across PCI. @@ -147,7 +144,6 @@ static int fsl_pci_dma_set_mask(struct device *dev, u64 dma_mask) set_dma_offset(dev, pci64_dma_offset); } - *dev->dma_mask = dma_mask; return 0; } diff --git a/include/linux/dma-mapping.h b/include/linux/dma-mapping.h index 15bd41447025..8dd19e66c0e5 100644 --- a/include/linux/dma-mapping.h +++ b/include/linux/dma-mapping.h @@ -598,18 +598,23 @@ static inline int dma_supported(struct device *dev, u64 mask) return ops->dma_supported(dev, mask); } -#ifndef HAVE_ARCH_DMA_SET_MASK +#ifdef CONFIG_ARCH_HAS_DMA_SET_MASK +bool arch_dma_set_mask(struct device *dev, u64 mask); +#else +#define arch_dma_set_mask(dev, mask) true +#endif + static inline int dma_set_mask(struct device *dev, u64 mask) { if (!dev->dma_mask || !dma_supported(dev, mask)) return -EIO; - + if (!arch_dma_set_mask(dev, mask)) + return -EIO; dma_check_mask(dev, mask); *dev->dma_mask = mask; return 0; } -#endif static inline u64 dma_get_mask(struct device *dev) { diff --git a/kernel/dma/Kconfig b/kernel/dma/Kconfig index 645c7a2ecde8..951045c90c2c 100644 --- a/kernel/dma/Kconfig +++ b/kernel/dma/Kconfig @@ -16,6 +16,9 @@ config ARCH_DMA_ADDR_T_64BIT config ARCH_HAS_DMA_COHERENCE_H bool +config ARCH_HAS_DMA_SET_MASK + bool + config HAVE_GENERIC_DMA_COHERENT bool -- 2.19.1