Merge commit 'v2.6.27-rc6' into x86/iommu

1 files changed, 148 insertions, 0 deletions

diff --git a/arch/blackfin/include/asm/pci.h b/arch/blackfin/include/asm/pci.h
new file mode 100644
index 00000000000..61277358c86
--- /dev/null
+++ b/arch/blackfin/include/asm/pci.h
@@ -0,0 +1,148 @@
+/* Changed from asm-m68k version, Lineo Inc. 	May 2001	*/
+
+#ifndef _ASM_BFIN_PCI_H
+#define _ASM_BFIN_PCI_H
+
+#include <asm/scatterlist.h>
+
+/*
+ *
+ * Written by Wout Klaren.
+ */
+
+/* Added by Chang Junxiao */
+#define PCIBIOS_MIN_IO 0x00001000
+#define PCIBIOS_MIN_MEM 0x10000000
+
+#define PCI_DMA_BUS_IS_PHYS       (1)
+struct pci_ops;
+
+/*
+ * Structure with hardware dependent information and functions of the
+ * PCI bus.
+ */
+struct pci_bus_info {
+
+	/*
+	 * Resources of the PCI bus.
+	 */
+	struct resource mem_space;
+	struct resource io_space;
+
+	/*
+	 * System dependent functions.
+	 */
+	struct pci_ops *bfin_pci_ops;
+	void (*fixup) (int pci_modify);
+	void (*conf_device) (unsigned char bus, unsigned char device_fn);
+};
+
+#define pcibios_assign_all_busses()	0
+static inline void pcibios_set_master(struct pci_dev *dev)
+{
+
+	/* No special bus mastering setup handling */
+}
+static inline void pcibios_penalize_isa_irq(int irq)
+{
+
+	/* We don't do dynamic PCI IRQ allocation */
+}
+static inline dma_addr_t pci_map_single(struct pci_dev *hwdev, void *ptr,
+					size_t size, int direction)
+{
+	if (direction == PCI_DMA_NONE)
+		BUG();
+
+	 /* return virt_to_bus(ptr); */
+	return (dma_addr_t) ptr;
+}
+
+/* Unmap a single streaming mode DMA translation.  The dma_addr and size
+ * must match what was provided for in a previous pci_map_single call.  All
+ * other usages are undefined.
+ *
+ * After this call, reads by the cpu to the buffer are guarenteed to see
+ * whatever the device wrote there.
+ */
+static inline void pci_unmap_single(struct pci_dev *hwdev, dma_addr_t dma_addr,
+				    size_t size, int direction)
+{
+	if (direction == PCI_DMA_NONE)
+		BUG();
+
+	/* Nothing to do */
+}
+
+/* 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
+ * elements are each tagged with the appropriate dma address
+ * and length.  They are obtained via sg_dma_{address,length}(SG).
+ *
+ * NOTE: An implementation may be able to use a smaller number of
+ *       DMA address/length pairs than there are SG table elements.
+ *       (for example via virtual mapping capabilities)
+ *       The routine returns the number of addr/length pairs actually
+ *       used, at most nents.
+ *
+ * Device ownership issues as mentioned above for pci_map_single are
+ * the same here.
+ */
+static inline int pci_map_sg(struct pci_dev *hwdev, struct scatterlist *sg,
+			     int nents, int direction)
+{
+	if (direction == PCI_DMA_NONE)
+		BUG();
+	return nents;
+}
+
+/* Unmap a set of streaming mode DMA translations.
+ * Again, cpu read rules concerning calls here are the same as for
+ * pci_unmap_single() above.
+ */
+static inline void pci_unmap_sg(struct pci_dev *hwdev, struct scatterlist *sg,
+				int nents, int direction)
+{
+	if (direction == PCI_DMA_NONE)
+		BUG();
+
+	/* Nothing to do */
+}
+
+/* Make physical memory consistent for a single
+ * streaming mode DMA translation after a transfer.
+ *
+ * If you perform a pci_map_single() but wish to interrogate the
+ * buffer using the cpu, yet do not wish to teardown the PCI dma
+ * mapping, you must call this function before doing so.  At the
+ * next point you give the PCI dma address back to the card, the
+ * device again owns the buffer.
+ */
+static inline void pci_dma_sync_single(struct pci_dev *hwdev,
+				       dma_addr_t dma_handle, size_t size,
+				       int direction)
+{
+	if (direction == PCI_DMA_NONE)
+		BUG();
+
+	/* Nothing to do */
+}
+
+/* Make physical memory consistent for a set of streaming
+ * mode DMA translations after a transfer.
+ *
+ * The same as pci_dma_sync_single but for a scatter-gather list,
+ * same rules and usage.
+ */
+static inline void pci_dma_sync_sg(struct pci_dev *hwdev,
+				   struct scatterlist *sg, int nelems,
+				   int direction)
+{
+	if (direction == PCI_DMA_NONE)
+		BUG();
+
+	/* Nothing to do */
+}
+
+#endif				/* _ASM_BFIN_PCI_H */