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Subject[PATCH 2/7] x86: add free_coherent dma_ops callback to GART driver
Date
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
---
arch/x86/kernel/pci-gart_64.c | 10 ++++++++++
1 files changed, 10 insertions(+), 0 deletions(-)

diff --git a/arch/x86/kernel/pci-gart_64.c b/arch/x86/kernel/pci-gart_64.c
index 55cc388..18db09b 100644
--- a/arch/x86/kernel/pci-gart_64.c
+++ b/arch/x86/kernel/pci-gart_64.c
@@ -519,6 +519,15 @@ gart_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_addr,
return NULL;
}

+/* free a coherent mapping */
+static void
+gart_free_coherent(struct device *dev, size_t size, void *vaddr,
+ dma_addr_t dma_addr)
+{
+ gart_unmap_single(dev, dma_addr, size, DMA_BIDIRECTIONAL);
+ free_pages((unsigned long)vaddr, get_order(size));
+}
+
static int no_agp;

static __init unsigned long check_iommu_size(unsigned long aper, u64 aper_size)
@@ -722,6 +731,7 @@ static struct dma_mapping_ops gart_dma_ops = {
.map_sg = gart_map_sg,
.unmap_sg = gart_unmap_sg,
.alloc_coherent = gart_alloc_coherent,
+ .free_coherent = gart_free_coherent,
};

void gart_iommu_shutdown(void)
--
1.5.3.7



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