From patchwork Tue Jan 11 10:49:05 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: [3/4] sparc: Add pci32_unmap_page. From: Kristoffer Glembo X-Patchwork-Id: 78320 Message-Id: <1294742946-1040-4-git-send-email-kristoffer@gaisler.com> To: sparclinux@vger.kernel.org Cc: sam@ravnborg.org, davem@davemloft.net Date: Tue, 11 Jan 2011 11:49:05 +0100 Signed-off-by: Kristoffer Glembo --- arch/sparc/kernel/ioport.c | 9 +++++++++ 1 files changed, 9 insertions(+), 0 deletions(-) diff --git a/arch/sparc/kernel/ioport.c b/arch/sparc/kernel/ioport.c index bfcbd1e..ba5cf62 100644 --- a/arch/sparc/kernel/ioport.c +++ b/arch/sparc/kernel/ioport.c @@ -529,6 +529,14 @@ static dma_addr_t pci32_map_page(struct device *dev, struct page *page, return page_to_phys(page) + offset; } +static void pci32_unmap_page(struct device *dev, dma_addr_t ba, size_t size, + enum dma_data_direction dir, struct dma_attrs *attrs) +{ + if (dir != PCI_DMA_TODEVICE) { + mmu_inval_dma_area((unsigned long)phys_to_virt(ba), PAGE_ALIGN(size)); + } +} + /* Map a set of buffers described by scatterlist in streaming * mode for DMA. This is the scather-gather version of the * above pci_map_single interface. Here the scatter gather list @@ -651,6 +659,7 @@ struct dma_map_ops pci32_dma_ops = { .alloc_coherent = pci32_alloc_coherent, .free_coherent = pci32_free_coherent, .map_page = pci32_map_page, + .unmap_page = pci32_unmap_page, .map_sg = pci32_map_sg, .unmap_sg = pci32_unmap_sg, .sync_single_for_cpu = pci32_sync_single_for_cpu,