1 files changed, 144 insertions, 0 deletions

diff --git a/arch/sh/include/asm/pci.h b/arch/sh/include/asm/pci.h
new file mode 100644
index 000000000000..df1d383e18a5
--- /dev/null
+++ b/arch/sh/include/asm/pci.h
@@ -0,0 +1,144 @@
+#ifndef __ASM_SH_PCI_H
+#define __ASM_SH_PCI_H
+
+#ifdef __KERNEL__
+
+#include <linux/dma-mapping.h>
+
+/* 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()     1
+#define pcibios_scan_all_fns(a, b)      0
+
+/*
+ * A board can define one or more PCI channels that represent built-in (or
+ * external) PCI controllers.
+ */
+struct pci_channel {
+        struct pci_ops *pci_ops;
+        struct resource *io_resource;
+        struct resource *mem_resource;
+        int first_devfn;
+        int last_devfn;
+};
+
+/*
+ * Each board initializes this array and terminates it with a NULL entry.
+ */
+extern struct pci_channel board_pci_channels[];
+
+#define PCIBIOS_MIN_IO          board_pci_channels->io_resource->start
+#define PCIBIOS_MIN_MEM         board_pci_channels->mem_resource->start
+
+/*
+ * I/O routine helpers
+ */
+#if defined(CONFIG_CPU_SUBTYPE_SH7780) || defined(CONFIG_CPU_SUBTYPE_SH7785)
+#define PCI_IO_AREA             0xFE400000
+#define PCI_IO_SIZE             0x00400000
+#elif defined(CONFIG_CPU_SH5)
+extern unsigned long PCI_IO_AREA;
+#define PCI_IO_SIZE             0x00010000
+#else
+#define PCI_IO_AREA             0xFE240000
+#define PCI_IO_SIZE             0x00040000
+#endif
+
+#define PCI_MEM_SIZE            0x01000000
+
+#define SH4_PCIIOBR_MASK        0xFFFC0000
+#define pci_ioaddr(addr)        (PCI_IO_AREA + (addr & ~SH4_PCIIOBR_MASK))
+
+#if defined(CONFIG_PCI)
+#define is_pci_ioaddr(port)             \
+        (((port) >= PCIBIOS_MIN_IO) &&  \
+         ((port) < (PCIBIOS_MIN_IO + PCI_IO_SIZE)))
+#define is_pci_memaddr(port)            \
+        (((port) >= PCIBIOS_MIN_MEM) && \
+         ((port) < (PCIBIOS_MIN_MEM + PCI_MEM_SIZE)))
+#else
+#define is_pci_ioaddr(port)     (0)
+#define is_pci_memaddr(port)    (0)
+#endif
+
+struct pci_dev;
+
+extern void pcibios_set_master(struct pci_dev *dev);
+
+static inline void pcibios_penalize_isa_irq(int irq, int active)
+{
+        /* We don't do dynamic PCI IRQ allocation */
+}
+
+/* Dynamic DMA mapping stuff.
+ * SuperH has everything mapped statically like x86.
+ */
+
+/* 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)
+
+#include <linux/types.h>
+#include <linux/slab.h>
+#include <asm/scatterlist.h>
+#include <linux/string.h>
+#include <asm/io.h>
+
+/* pci_unmap_{single,page} being a nop depends upon the
+ * configuration.
+ */
+#ifdef CONFIG_SH_PCIDMA_NONCOHERENT
+#define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME)       \
+        dma_addr_t ADDR_NAME;
+#define DECLARE_PCI_UNMAP_LEN(LEN_NAME)         \
+        __u32 LEN_NAME;
+#define pci_unmap_addr(PTR, ADDR_NAME)                  \
+        ((PTR)->ADDR_NAME)
+#define pci_unmap_addr_set(PTR, ADDR_NAME, VAL)         \
+        (((PTR)->ADDR_NAME) = (VAL))
+#define pci_unmap_len(PTR, LEN_NAME)                    \
+        ((PTR)->LEN_NAME)
+#define pci_unmap_len_set(PTR, LEN_NAME, VAL)           \
+        (((PTR)->LEN_NAME) = (VAL))
+#else
+#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)
+#endif
+
+#ifdef CONFIG_PCI
+static inline void pci_dma_burst_advice(struct pci_dev *pdev,
+                                        enum pci_dma_burst_strategy *strat,
+                                        unsigned long *strategy_parameter)
+{
+        *strat = PCI_DMA_BURST_INFINITY;
+        *strategy_parameter = ~0UL;
+}
+#endif
+
+/* Board-specific fixup routines. */
+void pcibios_fixup(void);
+int pcibios_init_platform(void);
+int pcibios_map_platform_irq(struct pci_dev *dev, u8 slot, u8 pin);
+
+#ifdef CONFIG_PCI_AUTO
+int pciauto_assign_resources(int busno, struct pci_channel *hose);
+#endif
+
+#endif /* __KERNEL__ */
+
+/* generic pci stuff */
+#include <asm-generic/pci.h>
+
+/* generic DMA-mapping stuff */
+#include <asm-generic/pci-dma-compat.h>
+
+#endif /* __ASM_SH_PCI_H */
+