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-rw-r--r--arch/openrisc/kernel/dma.c28
1 files changed, 27 insertions, 1 deletions
diff --git a/arch/openrisc/kernel/dma.c b/arch/openrisc/kernel/dma.c
index 968d3ee477e3..f1c8ee2895d0 100644
--- a/arch/openrisc/kernel/dma.c
+++ b/arch/openrisc/kernel/dma.c
@@ -154,6 +154,33 @@ void or1k_unmap_page(struct device *dev, dma_addr_t dma_handle,
154 /* Nothing special to do here... */ 154 /* Nothing special to do here... */
155} 155}
156 156
157int or1k_map_sg(struct device *dev, struct scatterlist *sg,
158 int nents, enum dma_data_direction dir,
159 struct dma_attrs *attrs)
160{
161 struct scatterlist *s;
162 int i;
163
164 for_each_sg(sg, s, nents, i) {
165 s->dma_address = or1k_map_page(dev, sg_page(s), s->offset,
166 s->length, dir, NULL);
167 }
168
169 return nents;
170}
171
172void or1k_unmap_sg(struct device *dev, struct scatterlist *sg,
173 int nents, enum dma_data_direction dir,
174 struct dma_attrs *attrs)
175{
176 struct scatterlist *s;
177 int i;
178
179 for_each_sg(sg, s, nents, i) {
180 or1k_unmap_page(dev, sg_dma_address(s), sg_dma_len(s), dir, NULL);
181 }
182}
183
157void or1k_sync_single_for_cpu(struct device *dev, 184void or1k_sync_single_for_cpu(struct device *dev,
158 dma_addr_t dma_handle, size_t size, 185 dma_addr_t dma_handle, size_t size,
159 enum dma_data_direction dir) 186 enum dma_data_direction dir)
@@ -187,5 +214,4 @@ static int __init dma_init(void)
187 214
188 return 0; 215 return 0;
189} 216}
190
191fs_initcall(dma_init); 217fs_initcall(dma_init);