Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756142AbYHSOfV (ORCPT ); Tue, 19 Aug 2008 10:35:21 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754192AbYHSOdM (ORCPT ); Tue, 19 Aug 2008 10:33:12 -0400 Received: from outbound-va3.frontbridge.com ([216.32.180.16]:55685 "EHLO VA3EHSOBE004.bigfish.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754138AbYHSOdH (ORCPT ); Tue, 19 Aug 2008 10:33:07 -0400 X-BigFish: VPS4(zzzz10d3izzz32i43j65h) X-Spam-TCS-SCL: 4:0 X-FB-SS: 5, X-WSS-ID: 0K5UR2K-03-AJ2-01 From: Joerg Roedel To: mingo@redhat.com, tglx@linutronix.de, hpa@zytor.com CC: linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org, muli@il.ibm.com, Joerg Roedel Subject: [PATCH 1/8] x86: add alloc_coherent dma_ops callback to GART driver Date: Tue, 19 Aug 2008 16:32:39 +0200 Message-ID: <1219156366-32498-2-git-send-email-joerg.roedel@amd.com> X-Mailer: git-send-email 1.5.3.7 In-Reply-To: <1219156366-32498-1-git-send-email-joerg.roedel@amd.com> References: <1219156366-32498-1-git-send-email-joerg.roedel@amd.com> X-OriginalArrivalTime: 19 Aug 2008 14:32:46.0515 (UTC) FILETIME=[72C31030:01C90208] MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1457 Lines: 53 Signed-off-by: Joerg Roedel --- arch/x86/kernel/pci-gart_64.c | 21 +++++++++++++++++++++ 1 files changed, 21 insertions(+), 0 deletions(-) diff --git a/arch/x86/kernel/pci-gart_64.c b/arch/x86/kernel/pci-gart_64.c index 4d8efb0..44a75a6 100644 --- a/arch/x86/kernel/pci-gart_64.c +++ b/arch/x86/kernel/pci-gart_64.c @@ -506,6 +506,26 @@ error: return 0; } +/* allocate and map a coherent mapping */ +static void * +gart_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_addr, + gfp_t flag) +{ + void *vaddr; + + vaddr = (void *)__get_free_pages(flag, get_order(size)); + if (!vaddr) + return NULL; + + *dma_addr = gart_map_single(dev, __pa(vaddr), size, DMA_BIDIRECTIONAL); + if (*dma_addr != bad_dma_address) + return vaddr; + + free_pages((unsigned long)vaddr, get_order(size)); + + return NULL; +} + static int no_agp; static __init unsigned long check_iommu_size(unsigned long aper, u64 aper_size) @@ -708,6 +728,7 @@ static struct dma_mapping_ops gart_dma_ops = { .sync_sg_for_device = NULL, .map_sg = gart_map_sg, .unmap_sg = gart_unmap_sg, + .alloc_coherent = gart_alloc_coherent, }; void gart_iommu_shutdown(void) -- 1.5.3.7 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/