arch/arm/include/asm/mach/pci.h

   1 /*
   2  *  arch/arm/include/asm/mach/pci.h
   3  *
   4  *  Copyright (C) 2000 Russell King
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 as
   8  * published by the Free Software Foundation.
   9  */
  10
  11 #ifndef __ASM_MACH_PCI_H
  12 #define __ASM_MACH_PCI_H
  13
  14 #include <linux/ioport.h>
  15
  16 struct pci_sys_data;
  17 struct pci_ops;
  18 struct pci_bus;
  19 struct device;
  20
  21 struct hw_pci {
  22         struct msi_controller *msi_ctrl;
  23         struct pci_ops  *ops;
  24         int             nr_controllers;
  25         unsigned int    io_optional:1;
  26         void            **private_data;
  27         int             (*setup)(int nr, struct pci_sys_data *);
  28         struct pci_bus *(*scan)(int nr, struct pci_sys_data *);
  29         void            (*preinit)(void);
  30         void            (*postinit)(void);
  31         u8              (*swizzle)(struct pci_dev *dev, u8 *pin);
  32         int             (*map_irq)(const struct pci_dev *dev, u8 slot, u8 pin);
  33         resource_size_t (*align_resource)(struct pci_dev *dev,
  34                                           const struct resource *res,
  35                                           resource_size_t start,
  36                                           resource_size_t size,
  37                                           resource_size_t align);
  38 };
  39
  40 /*
  41  * Per-controller structure
  42  */
  43 struct pci_sys_data {
  44         struct list_head node;
  45         int             busnr;          /* primary bus number                   */
  46         u64             mem_offset;     /* bus->cpu memory mapping offset       */
  47         unsigned long   io_offset;      /* bus->cpu IO mapping offset           */
  48         struct pci_bus  *bus;           /* PCI bus                              */
  49         struct list_head resources;     /* root bus resources (apertures)       */
  50         struct resource io_res;
  51         char            io_res_name[12];
  52                                         /* Bridge swizzling                     */
  53         u8              (*swizzle)(struct pci_dev *, u8 *);
  54                                         /* IRQ mapping                          */
  55         int             (*map_irq)(const struct pci_dev *, u8, u8);
  56         void            *private_data;  /* platform controller private data     */
  57 };
  58
  59 /*
  60  * Call this with your hw_pci struct to initialise the PCI system.
  61  */
  62 void pci_common_init_dev(struct device *, struct hw_pci *);
  63
  64 /*
  65  * Compatibility wrapper for older platforms that do not care about
  66  * passing the parent device.
  67  */
  68 static inline void pci_common_init(struct hw_pci *hw)
  69 {
  70         pci_common_init_dev(NULL, hw);
  71 }
  72
  73 /*
  74  * Setup early fixed I/O mapping.
  75  */
  76 #if defined(CONFIG_PCI)
  77 extern void pci_map_io_early(unsigned long pfn);
  78 #else
  79 static inline void pci_map_io_early(unsigned long pfn) {}
  80 #endif
  81
  82 /*
  83  * PCI controllers
  84  */
  85 extern struct pci_ops iop3xx_ops;
  86 extern int iop3xx_pci_setup(int nr, struct pci_sys_data *);
  87 extern void iop3xx_pci_preinit(void);
  88 extern void iop3xx_pci_preinit_cond(void);
  89
  90 extern struct pci_ops dc21285_ops;
  91 extern int dc21285_setup(int nr, struct pci_sys_data *);
  92 extern void dc21285_preinit(void);
  93 extern void dc21285_postinit(void);
  94
  95 #endif /* __ASM_MACH_PCI_H */