patch-2.3.43 linux/include/asm-ppc/pci.h

• Lines: 57
• Date: Wed Feb 9 19:43:47 2000
• Orig file: v2.3.42/linux/include/asm-ppc/pci.h
• Orig date: Fri Jan 21 18:19:17 2000

diff -u --recursive --new-file v2.3.42/linux/include/asm-ppc/pci.h linux/include/asm-ppc/pci.h
@@ -10,4 +10,56 @@
 #define PCIBIOS_MIN_IO		0x1000
 #define PCIBIOS_MIN_MEM		0x10000000
 
+/* Dynamic DMA Mapping stuff
+ * 	++ajoshi
+ */
+
+#include <linux/types.h>
+#include <linux/slab.h>
+#include <linux/string.h>
+#include <asm/scatterlist.h>
+#include <asm/io.h>
+
+struct pci_dev;
+
+extern void *pci_alloc_consistent(struct pci_dev *hwdev, size_t size,
+				  dma_addr_t *dma_handle);
+extern void pci_free_consistent(struct pci_dev *hwdev, size_t size,
+				void *vaddr, dma_addr_t dma_handle);
+extern inline dma_addr_t pci_map_single(struct pci_dev *hwdev, void *ptr,
+					size_t size)
+{
+	return virt_to_bus(ptr);
+}
+extern inline void pci_unmap_single(struct pci_dev *hwdev, dma_addr_t dma_addr,
+				    size_t size)
+{
+	/* nothing to do */
+}
+extern inline int pci_map_sg(struct pci_dev *hwdev, struct scatterlist *sg,
+			     int nents)
+{
+	return nents;
+}
+extern inline void pci_unmap_sg(struct pci_dev *hwdev, struct scatterlist *sg,
+				int nents)
+{
+	/* nothing to do */
+}
+extern inline void pci_dma_sync_single(struct pci_dev *hwdev,
+				       dma_addr_t dma_handle,
+				       size_t size)
+{
+	/* nothing to do */
+}
+extern inline void pci_dma_syng_sg(struct pci_dev *hwdev,
+				   struct scatterlist *sg,
+				   int nelems)
+{
+	/* nothing to do */
+}
+
+#define sg_dma_address(sg)	(virt_to_bus((sg)->address))
+#define sg_dma_len(sg)		((sg)->length)
+
 #endif /* __PPC_PCI_H */