From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754056AbZK0N64 (ORCPT ); Fri, 27 Nov 2009 08:58:56 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754007AbZK0N6z (ORCPT ); Fri, 27 Nov 2009 08:58:55 -0500 Received: from va3ehsobe004.messaging.microsoft.com ([216.32.180.14]:38562 "EHLO VA3EHSOBE004.bigfish.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1753280AbZK0N4B (ORCPT ); Fri, 27 Nov 2009 08:56:01 -0500 X-SpamScore: 1 X-BigFish: VPS1(zzzz1202hzzz32i6bh62h) X-Spam-TCS-SCL: 1:0 X-WSS-ID: 0KTRTD5-01-6RR-02 X-M-MSG: From: Joerg Roedel To: Ingo Molnar CC: iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org, Joerg Roedel Subject: [PATCH 18/34] x86/amd-iommu: Remove iommu specific handling from dma_ops path Date: Fri, 27 Nov 2009 14:55:29 +0100 Message-ID: <1259330145-14865-19-git-send-email-joerg.roedel@amd.com> X-Mailer: git-send-email 1.6.5.3 In-Reply-To: <1259330145-14865-1-git-send-email-joerg.roedel@amd.com> References: <1259330145-14865-1-git-send-email-joerg.roedel@amd.com> X-OriginalArrivalTime: 27 Nov 2009 13:55:48.0576 (UTC) FILETIME=[52DA2E00:01CA6F69] MIME-Version: 1.0 Content-Type: text/plain X-Reverse-DNS: ausb3extmailp02.amd.com Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patch finishes the removal of all iommu specific handling code in the dma_ops path. Signed-off-by: Joerg Roedel --- arch/x86/kernel/amd_iommu.c | 28 +++++++++++----------------- 1 files changed, 11 insertions(+), 17 deletions(-) diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c index c04dcb7..2cd5800 100644 --- a/arch/x86/kernel/amd_iommu.c +++ b/arch/x86/kernel/amd_iommu.c @@ -1436,11 +1436,11 @@ static struct dma_ops_domain *find_protection_domain(u16 devid) * in this function. */ static bool get_device_resources(struct device *dev, - struct amd_iommu **iommu, struct protection_domain **domain, u16 *bdf) { struct dma_ops_domain *dma_dom; + struct amd_iommu *iommu; struct pci_dev *pcidev; u16 _bdf; @@ -1450,21 +1450,21 @@ static bool get_device_resources(struct device *dev, pcidev = to_pci_dev(dev); _bdf = calc_devid(pcidev->bus->number, pcidev->devfn); *bdf = amd_iommu_alias_table[_bdf]; - *iommu = amd_iommu_rlookup_table[*bdf]; + iommu = amd_iommu_rlookup_table[*bdf]; *domain = domain_for_device(*bdf); if (*domain == NULL) { dma_dom = find_protection_domain(*bdf); if (!dma_dom) - dma_dom = (*iommu)->default_dom; + dma_dom = iommu->default_dom; *domain = &dma_dom->domain; - attach_device(*iommu, *domain, *bdf); + attach_device(iommu, *domain, *bdf); DUMP_printk("Using protection domain %d for device %s\n", (*domain)->id, dev_name(dev)); } if (domain_for_device(_bdf) == NULL) - attach_device(*iommu, *domain, _bdf); + attach_device(iommu, *domain, _bdf); return true; } @@ -1776,7 +1776,6 @@ static dma_addr_t map_page(struct device *dev, struct page *page, struct dma_attrs *attrs) { unsigned long flags; - struct amd_iommu *iommu; struct protection_domain *domain; u16 devid; dma_addr_t addr; @@ -1785,7 +1784,7 @@ static dma_addr_t map_page(struct device *dev, struct page *page, INC_STATS_COUNTER(cnt_map_single); - if (!get_device_resources(dev, &iommu, &domain, &devid)) + if (!get_device_resources(dev, &domain, &devid)) /* device not handled by any AMD IOMMU */ return (dma_addr_t)paddr; @@ -1815,13 +1814,12 @@ static void unmap_page(struct device *dev, dma_addr_t dma_addr, size_t size, enum dma_data_direction dir, struct dma_attrs *attrs) { unsigned long flags; - struct amd_iommu *iommu; struct protection_domain *domain; u16 devid; INC_STATS_COUNTER(cnt_unmap_single); - if (!get_device_resources(dev, &iommu, &domain, &devid)) + if (!get_device_resources(dev, &domain, &devid)) /* device not handled by any AMD IOMMU */ return; @@ -1864,7 +1862,6 @@ static int map_sg(struct device *dev, struct scatterlist *sglist, struct dma_attrs *attrs) { unsigned long flags; - struct amd_iommu *iommu; struct protection_domain *domain; u16 devid; int i; @@ -1875,7 +1872,7 @@ static int map_sg(struct device *dev, struct scatterlist *sglist, INC_STATS_COUNTER(cnt_map_sg); - if (!get_device_resources(dev, &iommu, &domain, &devid)) + if (!get_device_resources(dev, &domain, &devid)) return map_sg_no_iommu(dev, sglist, nelems, dir); dma_mask = *dev->dma_mask; @@ -1927,7 +1924,6 @@ static void unmap_sg(struct device *dev, struct scatterlist *sglist, struct dma_attrs *attrs) { unsigned long flags; - struct amd_iommu *iommu; struct protection_domain *domain; struct scatterlist *s; u16 devid; @@ -1935,7 +1931,7 @@ static void unmap_sg(struct device *dev, struct scatterlist *sglist, INC_STATS_COUNTER(cnt_unmap_sg); - if (!get_device_resources(dev, &iommu, &domain, &devid)) + if (!get_device_resources(dev, &domain, &devid)) return; if (!dma_ops_domain(domain)) @@ -1962,7 +1958,6 @@ static void *alloc_coherent(struct device *dev, size_t size, { unsigned long flags; void *virt_addr; - struct amd_iommu *iommu; struct protection_domain *domain; u16 devid; phys_addr_t paddr; @@ -1970,7 +1965,7 @@ static void *alloc_coherent(struct device *dev, size_t size, INC_STATS_COUNTER(cnt_alloc_coherent); - if (!get_device_resources(dev, &iommu, &domain, &devid)) { + if (!get_device_resources(dev, &domain, &devid)) { virt_addr = (void *)__get_free_pages(flag, get_order(size)); *dma_addr = __pa(virt_addr); return virt_addr; @@ -2022,13 +2017,12 @@ static void free_coherent(struct device *dev, size_t size, void *virt_addr, dma_addr_t dma_addr) { unsigned long flags; - struct amd_iommu *iommu; struct protection_domain *domain; u16 devid; INC_STATS_COUNTER(cnt_free_coherent); - if (!get_device_resources(dev, &iommu, &domain, &devid)) + if (!get_device_resources(dev, &domain, &devid)) goto free_mem; if (!dma_ops_domain(domain)) -- 1.6.5.3