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=-9.9 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,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 3B58DC433E0 for ; Tue, 19 May 2020 20:35:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id EE73620826 for ; Tue, 19 May 2020 20:35:08 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=broadcom.com header.i=@broadcom.com header.b="iJ8daraq" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728043AbgESUfH (ORCPT ); Tue, 19 May 2020 16:35:07 -0400 Received: from rnd-relay.smtp.broadcom.com ([192.19.229.170]:35322 "EHLO rnd-relay.smtp.broadcom.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727939AbgESUfC (ORCPT ); Tue, 19 May 2020 16:35:02 -0400 Received: from mail-irv-17.broadcom.com (mail-irv-17.lvn.broadcom.net [10.75.242.48]) by rnd-relay.smtp.broadcom.com (Postfix) with ESMTP id 6C53B30D82B; Tue, 19 May 2020 13:33:38 -0700 (PDT) DKIM-Filter: OpenDKIM Filter v2.10.3 rnd-relay.smtp.broadcom.com 6C53B30D82B DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=broadcom.com; s=dkimrelay; t=1589920418; bh=idCAwH65TvJoECMSQ+xjnD19SjnYnIujkrcbMhDjDEU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=iJ8daraqpkzatWJq9eG4T9sG9xvEc1Xi2vT9BJYubzwEJQmcU1rNmwywqjPM60845 syYRRu1GASzkAg/4B2CdK+67D4pNMlJOqnp/UkRQUH1QYqTyvCKvzzuYdOetgHjsPj tGXOQhjA0cfEhoSiVrzmS4gn/EeACUuPhUAZ/IOg= Received: from stbsrv-and-01.and.broadcom.net (stbsrv-and-01.and.broadcom.net [10.28.16.211]) by mail-irv-17.broadcom.com (Postfix) with ESMTP id B6AED14008D; Tue, 19 May 2020 13:34:59 -0700 (PDT) From: Jim Quinlan To: james.quinlan@broadcom.com, Nicolas Saenz Julienne Cc: Christoph Hellwig , Marek Szyprowski , Robin Murphy , iommu@lists.linux-foundation.org (open list:DMA MAPPING HELPERS), linux-kernel@vger.kernel.org (open list) Subject: [PATCH 10/15] dma-direct: Invoke dma offset func if needed Date: Tue, 19 May 2020 16:34:08 -0400 Message-Id: <20200519203419.12369-11-james.quinlan@broadcom.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200519203419.12369-1-james.quinlan@broadcom.com> References: <20200519203419.12369-1-james.quinlan@broadcom.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Just like dma_pfn_offset, another offset is added to the dma/phys translation if there happen to be multiple regions that have different mapping offsets. Signed-off-by: Jim Quinlan --- include/linux/dma-direct.h | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/include/linux/dma-direct.h b/include/linux/dma-direct.h index 24b8684aa21d..825a773dbbc3 100644 --- a/include/linux/dma-direct.h +++ b/include/linux/dma-direct.h @@ -15,6 +15,14 @@ static inline dma_addr_t __phys_to_dma(struct device *dev, phys_addr_t paddr) { dma_addr_t dev_addr = (dma_addr_t)paddr; +#ifdef CONFIG_DMA_PFN_OFFSET_MAP + if (unlikely(dev->dma_offset_map)) { + unsigned long dma_pfn_offset = dma_pfn_offset_frm_phys_addr( + dev->dma_offset_map, paddr); + + return dev_addr - ((dma_addr_t)dma_pfn_offset << PAGE_SHIFT); + } +#endif return dev_addr - ((dma_addr_t)dev->dma_pfn_offset << PAGE_SHIFT); } @@ -22,6 +30,14 @@ static inline phys_addr_t __dma_to_phys(struct device *dev, dma_addr_t dev_addr) { phys_addr_t paddr = (phys_addr_t)dev_addr; +#ifdef CONFIG_DMA_PFN_OFFSET_MAP + if (unlikely(dev->dma_offset_map)) { + unsigned long dma_pfn_offset = dma_pfn_offset_frm_dma_addr( + dev->dma_offset_map, dev_addr); + + return paddr + ((phys_addr_t)dma_pfn_offset << PAGE_SHIFT); + } +#endif return paddr + ((phys_addr_t)dev->dma_pfn_offset << PAGE_SHIFT); } #endif /* !CONFIG_ARCH_HAS_PHYS_TO_DMA */ -- 2.17.1