[PATCH] CRIS update: pci

Patches to make it possible to add PCI support.

Signed-off-by: Mikael Starvik <starvik@axis.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 97 insertions, 5 deletions

diff --git a/include/asm-cris/pci.h b/include/asm-cris/pci.h
index c61041531889..2064bc1de074 100644
--- a/include/asm-cris/pci.h
+++ b/include/asm-cris/pci.h
@@ -1,13 +1,105 @@
 #ifndef __ASM_CRIS_PCI_H
 #define __ASM_CRIS_PCI_H
 
+#include <linux/config.h>
+
+#ifdef __KERNEL__
+#include <linux/mm.h>           /* for struct page */
+
+/* Can be used to override the logic in pci_scan_bus for skipping
+   already-configured bus numbers - to be used for buggy BIOSes
+   or architectures with incomplete PCI setup by the loader */
+
+#define pcibios_assign_all_busses(void) 1
+
+extern unsigned long pci_mem_start;
+#define PCIBIOS_MIN_IO          0x1000
+#define PCIBIOS_MIN_MEM         0x10000000
+
+#define PCIBIOS_MIN_CARDBUS_IO  0x4000
+
+void pcibios_config_init(void);
+struct pci_bus * pcibios_scan_root(int bus);
+int pcibios_assign_resources(void);
+
+void pcibios_set_master(struct pci_dev *dev);
+void pcibios_penalize_isa_irq(int irq);
+struct irq_routing_table *pcibios_get_irq_routing_table(void);
+int pcibios_set_irq_routing(struct pci_dev *dev, int pin, int irq);
+
+/* Dynamic DMA mapping stuff.
+ * i386 has everything mapped statically.
+ */
+
+#include <linux/types.h>
+#include <linux/slab.h>
 #include <asm/scatterlist.h>
-#include <asm-generic/pci-dma-compat.h>
+#include <linux/string.h>
+#include <asm/io.h>
 
-/* ETRAX chips don't have a PCI bus. This file is just here because some stupid .c code
- * includes it even if CONFIG_PCI is not set.
+struct pci_dev;
+
+/* The PCI address space does equal the physical memory
+ * address space.  The networking and block device layers use
+ * this boolean for bounce buffer decisions.
  */
-#define PCI_DMA_BUS_IS_PHYS       (1)
+#define PCI_DMA_BUS_IS_PHYS     (1)
 
-#endif /* __ASM_CRIS_PCI_H */
+/* pci_unmap_{page,single} is a nop so... */
+#define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME)
+#define DECLARE_PCI_UNMAP_LEN(LEN_NAME)
+#define pci_unmap_addr(PTR, ADDR_NAME)          (0)
+#define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) do { } while (0)
+#define pci_unmap_len(PTR, LEN_NAME)            (0)
+#define pci_unmap_len_set(PTR, LEN_NAME, VAL)   do { } while (0)
+
+/* This is always fine. */
+#define pci_dac_dma_supported(pci_dev, mask)    (1)
 
+static inline dma64_addr_t
+pci_dac_page_to_dma(struct pci_dev *pdev, struct page *page, unsigned long offset, int direction)
+{
+        return ((dma64_addr_t) page_to_phys(page) +
+                (dma64_addr_t) offset);
+}
+
+static inline struct page *
+pci_dac_dma_to_page(struct pci_dev *pdev, dma64_addr_t dma_addr)
+{
+        return pfn_to_page(dma_addr >> PAGE_SHIFT);
+}
+
+static inline unsigned long
+pci_dac_dma_to_offset(struct pci_dev *pdev, dma64_addr_t dma_addr)
+{
+        return (dma_addr & ~PAGE_MASK);
+}
+
+static inline void
+pci_dac_dma_sync_single_for_cpu(struct pci_dev *pdev, dma64_addr_t dma_addr, size_t len, int direction)
+{
+}
+
+static inline void
+pci_dac_dma_sync_single_for_device(struct pci_dev *pdev, dma64_addr_t dma_addr, size_t len, int direction)
+{
+}
+
+#define HAVE_PCI_MMAP
+extern int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
+                               enum pci_mmap_state mmap_state, int write_combine);
+
+
+static inline void pcibios_add_platform_entries(struct pci_dev *dev)
+{
+}
+
+#endif /* __KERNEL__ */
+
+/* implement the pci_ DMA API in terms of the generic device dma_ one */
+#include <asm-generic/pci-dma-compat.h>
+
+/* generic pci stuff */
+#include <asm-generic/pci.h>
+
+#endif /* __ASM_CRIS_PCI_H */