sparc: Add pci32_unmap_page.

Signed-off-by: Kristoffer Glembo <kristoffer@gaisler.com>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 8 insertions, 0 deletions

diff --git a/arch/sparc/kernel/ioport.c b/arch/sparc/kernel/ioport.c
index cea49c0756d2..1b9f07c07640 100644
--- a/arch/sparc/kernel/ioport.c
+++ b/arch/sparc/kernel/ioport.c
@@ -524,6 +524,13 @@ 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
@@ -646,6 +653,7 @@ 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,