arch/sh/include/asm/pci.h

   1 #ifndef __ASM_SH_PCI_H
   2 #define __ASM_SH_PCI_H
   3
   4 #ifdef __KERNEL__
   5
   6 /* Can be used to override the logic in pci_scan_bus for skipping
   7    already-configured bus numbers - to be used for buggy BIOSes
   8    or architectures with incomplete PCI setup by the loader */
   9
  10 #define pcibios_assign_all_busses()     1
  11
  12 /*
  13  * A board can define one or more PCI channels that represent built-in (or
  14  * external) PCI controllers.
  15  */
  16 struct pci_channel {
  17         struct pci_channel      *next;
  18         struct pci_bus          *bus;
  19
  20         struct pci_ops          *pci_ops;
  21
  22         struct resource         *resources;
  23         unsigned int            nr_resources;
  24
  25         unsigned long           io_offset;
  26         unsigned long           mem_offset;
  27
  28         unsigned long           reg_base;
  29         unsigned long           io_map_base;
  30
  31         unsigned int            index;
  32         unsigned int            need_domain_info;
  33
  34         /* Optional error handling */
  35         struct timer_list       err_timer, serr_timer;
  36         unsigned int            err_irq, serr_irq;
  37 };
  38
  39 /* arch/sh/drivers/pci/pci.c */
  40 extern raw_spinlock_t pci_config_lock;
  41
  42 extern int register_pci_controller(struct pci_channel *hose);
  43 extern void pcibios_report_status(unsigned int status_mask, int warn);
  44
  45 /* arch/sh/drivers/pci/common.c */
  46 extern int early_read_config_byte(struct pci_channel *hose, int top_bus,
  47                                   int bus, int devfn, int offset, u8 *value);
  48 extern int early_read_config_word(struct pci_channel *hose, int top_bus,
  49                                   int bus, int devfn, int offset, u16 *value);
  50 extern int early_read_config_dword(struct pci_channel *hose, int top_bus,
  51                                    int bus, int devfn, int offset, u32 *value);
  52 extern int early_write_config_byte(struct pci_channel *hose, int top_bus,
  53                                    int bus, int devfn, int offset, u8 value);
  54 extern int early_write_config_word(struct pci_channel *hose, int top_bus,
  55                                    int bus, int devfn, int offset, u16 value);
  56 extern int early_write_config_dword(struct pci_channel *hose, int top_bus,
  57                                     int bus, int devfn, int offset, u32 value);
  58 extern void pcibios_enable_timers(struct pci_channel *hose);
  59 extern unsigned int pcibios_handle_status_errors(unsigned long addr,
  60                                  unsigned int status, struct pci_channel *hose);
  61 extern int pci_is_66mhz_capable(struct pci_channel *hose,
  62                                 int top_bus, int current_bus);
  63
  64 extern unsigned long PCIBIOS_MIN_IO, PCIBIOS_MIN_MEM;
  65
  66 struct pci_dev;
  67
  68 #define HAVE_PCI_MMAP
  69 extern int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
  70         enum pci_mmap_state mmap_state, int write_combine);
  71 extern void pcibios_set_master(struct pci_dev *dev);
  72
  73 /* Dynamic DMA mapping stuff.
  74  * SuperH has everything mapped statically like x86.
  75  */
  76
  77 /* The PCI address space does equal the physical memory
  78  * address space.  The networking and block device layers use
  79  * this boolean for bounce buffer decisions.
  80  */
  81 #define PCI_DMA_BUS_IS_PHYS     (dma_ops->is_phys)
  82
  83 #ifdef CONFIG_PCI
  84 /*
  85  * None of the SH PCI controllers support MWI, it is always treated as a
  86  * direct memory write.
  87  */
  88 #define PCI_DISABLE_MWI
  89 #endif
  90
  91 /* Board-specific fixup routines. */
  92 int pcibios_map_platform_irq(const struct pci_dev *dev, u8 slot, u8 pin);
  93
  94 #define pci_domain_nr(bus) ((struct pci_channel *)(bus)->sysdata)->index
  95
  96 static inline int pci_proc_domain(struct pci_bus *bus)
  97 {
  98         struct pci_channel *hose = bus->sysdata;
  99         return hose->need_domain_info;
 100 }
 101
 102 /* Chances are this interrupt is wired PC-style ...  */
 103 static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
 104 {
 105         return channel ? 15 : 14;
 106 }
 107
 108 /* generic DMA-mapping stuff */
 109 #include <asm-generic/pci-dma-compat.h>
 110
 111 #endif /* __KERNEL__ */
 112 #endif /* __ASM_SH_PCI_H */
 113