Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754649AbZAIQWp (ORCPT ); Fri, 9 Jan 2009 11:22:45 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753182AbZAIQUL (ORCPT ); Fri, 9 Jan 2009 11:20:11 -0500 Received: from outbound-sin.frontbridge.com ([207.46.51.80]:47695 "EHLO SG2EHSOBE004.bigfish.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752976AbZAIQUJ (ORCPT ); Fri, 9 Jan 2009 11:20:09 -0500 X-BigFish: VPS0(zz18c1Kzzzzz32i43j62h) X-Spam-TCS-SCL: 1:0 X-WSS-ID: 0KD7PCJ-03-IX4-01 From: Joerg Roedel To: linux-kernel@vger.kernel.org CC: mingo@redhat.com, dwmw2@infradead.org, fujita.tomonori@lab.ntt.co.jp, netdev@vger.kernel.org, iommu@lists.linux-foundation.org, Joerg Roedel Subject: [PATCH 10/16] dma-debug: add add checking for map/unmap_sg Date: Fri, 9 Jan 2009 17:19:24 +0100 Message-ID: <1231517970-20288-11-git-send-email-joerg.roedel@amd.com> X-Mailer: git-send-email 1.5.6.4 In-Reply-To: <1231517970-20288-1-git-send-email-joerg.roedel@amd.com> References: <1231517970-20288-1-git-send-email-joerg.roedel@amd.com> X-OriginalArrivalTime: 09 Jan 2009 16:19:30.0810 (UTC) FILETIME=[0D172DA0:01C97276] 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: 3073 Lines: 118 Impact: add debug callbacks for dma_{un}map_sg Signed-off-by: Joerg Roedel --- include/linux/dma-debug.h | 15 ++++++++++++ lib/dma-debug.c | 53 +++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 68 insertions(+), 0 deletions(-) diff --git a/include/linux/dma-debug.h b/include/linux/dma-debug.h index 82ae9ca..b2131f4 100644 --- a/include/linux/dma-debug.h +++ b/include/linux/dma-debug.h @@ -34,6 +34,11 @@ extern void debug_map_single(struct device *dev, void *ptr, size_t size, extern void debug_unmap_single(struct device *dev, dma_addr_t addr, size_t size, int direction); +extern void debug_map_sg(struct device *dev, struct scatterlist *sg, + int nents, int direction); + +extern void debug_unmap_sg(struct device *dev, struct scatterlist *sglist, + int nelems, int dir); #else /* CONFIG_DMA_API_DEBUG */ @@ -52,6 +57,16 @@ static inline void debug_unmap_single(struct device *dev, dma_addr_t addr, { } +static inline void debug_map_sg(struct device *dev, struct scatterlist *sg, + int nents, int direction) +{ +} + +static inline void debug_unmap_sg(struct device *dev, + struct scatterlist *sglist, + int nelems, int dir) +{ +} #endif /* CONFIG_DMA_API_DEBUG */ diff --git a/lib/dma-debug.c b/lib/dma-debug.c index d4d14e5..e6d45f9 100644 --- a/lib/dma-debug.c +++ b/lib/dma-debug.c @@ -17,6 +17,7 @@ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ +#include #include #include #include @@ -551,3 +552,55 @@ void debug_unmap_single(struct device *dev, dma_addr_t addr, } EXPORT_SYMBOL(debug_unmap_single); +void debug_map_sg(struct device *dev, struct scatterlist *sg, + int nents, int direction) +{ + struct dma_debug_entry *entry; + struct scatterlist *s; + int i; + + if (global_disable) + return; + + for_each_sg(sg, s, nents, i) { + entry = dma_entry_alloc(); + if (!entry) + return; + + entry->type = dma_debug_sg; + entry->dev = dev; + entry->cpu_addr = sg_virt(s); + entry->size = s->length; + entry->dev_addr = s->dma_address; + entry->direction = direction; + + add_dma_entry(entry); + } +} +EXPORT_SYMBOL(debug_map_sg); + +void debug_unmap_sg(struct device *dev, struct scatterlist *sglist, + int nelems, int dir) +{ + struct scatterlist *s; + int i; + + if (global_disable) + return; + + for_each_sg(sglist, s, nelems, i) { + + struct dma_debug_entry ref = { + .type = dma_debug_sg, + .dev = dev, + .cpu_addr = sg_virt(s), + .dev_addr = s->dma_address, + .size = s->length, + .direction = dir, + }; + + check_unmap(&ref); + } +} +EXPORT_SYMBOL(debug_unmap_sg); + -- 1.5.6.4 -- 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/