include/asm-sh/pci.h

   1 #ifndef __ASM_SH_PCI_H
   2 #define __ASM_SH_PCI_H
   3
   4 #ifdef __KERNEL__
   5
   6 #include <linux/dma-mapping.h>
   7
   8 /* Can be used to override the logic in pci_scan_bus for skipping
   9    already-configured bus numbers - to be used for buggy BIOSes
  10    or architectures with incomplete PCI setup by the loader */
  11
  12 #define pcibios_assign_all_busses()     1
  13 #define pcibios_scan_all_fns(a, b)      0
  14
  15 /*
  16  * A board can define one or more PCI channels that represent built-in (or
  17  * external) PCI controllers.
  18  */
  19 struct pci_channel {
  20         struct pci_ops *pci_ops;
  21         struct resource *io_resource;
  22         struct resource *mem_resource;
  23         int first_devfn;
  24         int last_devfn;
  25 };
  26
  27 /*
  28  * Each board initializes this array and terminates it with a NULL entry.
  29  */
  30 extern struct pci_channel board_pci_channels[];
  31
  32 #define PCIBIOS_MIN_IO          board_pci_channels->io_resource->start
  33 #define PCIBIOS_MIN_MEM         board_pci_channels->mem_resource->start
  34
  35 /*
  36  * I/O routine helpers
  37  */
  38 #if defined(CONFIG_CPU_SUBTYPE_SH7780) || defined(CONFIG_CPU_SUBTYPE_SH7785)
  39 #define PCI_IO_AREA             0xFE400000
  40 #define PCI_IO_SIZE             0x00400000
  41 #else
  42 #define PCI_IO_AREA             0xFE240000
  43 #define PCI_IO_SIZE             0X00040000
  44 #endif
  45
  46 #define PCI_MEM_SIZE            0x01000000
  47
  48 #define SH4_PCIIOBR_MASK        0xFFFC0000
  49 #define pci_ioaddr(addr)        (PCI_IO_AREA + (addr & ~SH4_PCIIOBR_MASK))
  50
  51 #if defined(CONFIG_PCI)
  52 #define is_pci_ioaddr(port)             \
  53         (((port) >= PCIBIOS_MIN_IO) &&  \
  54          ((port) < (PCIBIOS_MIN_IO + PCI_IO_SIZE)))
  55 #define is_pci_memaddr(port)            \
  56         (((port) >= PCIBIOS_MIN_MEM) && \
  57          ((port) < (PCIBIOS_MIN_MEM + PCI_MEM_SIZE)))
  58 #else
  59 #define is_pci_ioaddr(port)     (0)
  60 #define is_pci_memaddr(port)    (0)
  61 #endif
  62
  63 struct pci_dev;
  64
  65 extern void pcibios_set_master(struct pci_dev *dev);
  66
  67 static inline void pcibios_penalize_isa_irq(int irq, int active)
  68 {
  69         /* We don't do dynamic PCI IRQ allocation */
  70 }
  71
  72 /* Dynamic DMA mapping stuff.
  73  * SuperH has everything mapped statically like x86.
  74  */
  75
  76 /* The PCI address space does equal the physical memory
  77  * address space.  The networking and block device layers use
  78  * this boolean for bounce buffer decisions.
  79  */
  80 #define PCI_DMA_BUS_IS_PHYS     (1)
  81
  82 #include <linux/types.h>
  83 #include <linux/slab.h>
  84 #include <asm/scatterlist.h>
  85 #include <linux/string.h>
  86 #include <asm/io.h>
  87
  88 /* pci_unmap_{single,page} being a nop depends upon the
  89  * configuration.
  90  */
  91 #ifdef CONFIG_SH_PCIDMA_NONCOHERENT
  92 #define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME)       \
  93         dma_addr_t ADDR_NAME;
  94 #define DECLARE_PCI_UNMAP_LEN(LEN_NAME)         \
  95         __u32 LEN_NAME;
  96 #define pci_unmap_addr(PTR, ADDR_NAME)                  \
  97         ((PTR)->ADDR_NAME)
  98 #define pci_unmap_addr_set(PTR, ADDR_NAME, VAL)         \
  99         (((PTR)->ADDR_NAME) = (VAL))
 100 #define pci_unmap_len(PTR, LEN_NAME)                    \
 101         ((PTR)->LEN_NAME)
 102 #define pci_unmap_len_set(PTR, LEN_NAME, VAL)           \
 103         (((PTR)->LEN_NAME) = (VAL))
 104 #else
 105 #define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME)
 106 #define DECLARE_PCI_UNMAP_LEN(LEN_NAME)
 107 #define pci_unmap_addr(PTR, ADDR_NAME)          (0)
 108 #define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) do { } while (0)
 109 #define pci_unmap_len(PTR, LEN_NAME)            (0)
 110 #define pci_unmap_len_set(PTR, LEN_NAME, VAL)   do { } while (0)
 111 #endif
 112
 113 #ifdef CONFIG_PCI
 114 static inline void pci_dma_burst_advice(struct pci_dev *pdev,
 115                                         enum pci_dma_burst_strategy *strat,
 116                                         unsigned long *strategy_parameter)
 117 {
 118         *strat = PCI_DMA_BURST_INFINITY;
 119         *strategy_parameter = ~0UL;
 120 }
 121 #endif
 122
 123 /* Board-specific fixup routines. */
 124 void pcibios_fixup(void);
 125 int pcibios_init_platform(void);
 126 int pcibios_map_platform_irq(struct pci_dev *dev, u8 slot, u8 pin);
 127
 128 #ifdef CONFIG_PCI_AUTO
 129 int pciauto_assign_resources(int busno, struct pci_channel *hose);
 130 #endif
 131
 132 #endif /* __KERNEL__ */
 133
 134 /* generic pci stuff */
 135 #include <asm-generic/pci.h>
 136
 137 /* generic DMA-mapping stuff */
 138 #include <asm-generic/pci-dma-compat.h>
 139
 140 #endif /* __ASM_SH_PCI_H */
 141