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         void            **private_data;
  26         int             (*setup)(int nr, struct pci_sys_data *);
  27         struct pci_bus *(*scan)(int nr, struct pci_sys_data *);
  28         void            (*preinit)(void);
  29         void            (*postinit)(void);
  30         u8              (*swizzle)(struct pci_dev *dev, u8 *pin);
  31         int             (*map_irq)(const struct pci_dev *dev, u8 slot, u8 pin);
  32         resource_size_t (*align_resource)(struct pci_dev *dev,
  33                                           const struct resource *res,
  34                                           resource_size_t start,
  35                                           resource_size_t size,
  36                                           resource_size_t align);
  37 };
  38
  39 /*
  40  * Per-controller structure
  41  */
  42 struct pci_sys_data {
  43         struct list_head node;
  44         int             busnr;          /* primary bus number                   */
  45         u64             mem_offset;     /* bus->cpu memory mapping offset       */
  46         unsigned long   io_offset;      /* bus->cpu IO mapping offset           */
  47         struct pci_bus  *bus;           /* PCI bus                              */
  48         struct list_head resources;     /* root bus resources (apertures)       */
  49         struct resource io_res;
  50         char            io_res_name[12];
  51                                         /* Bridge swizzling                     */
  52         u8              (*swizzle)(struct pci_dev *, u8 *);
  53                                         /* IRQ mapping                          */
  54         int             (*map_irq)(const struct pci_dev *, u8, u8);
  55                                         /* Resource alignement requirements     */
  56         resource_size_t (*align_resource)(struct pci_dev *dev,
  57                                           const struct resource *res,
  58                                           resource_size_t start,
  59                                           resource_size_t size,
  60                                           resource_size_t align);
  61         void            *private_data;  /* platform controller private data     */
  62 };
  63
  64 /*
  65  * Call this with your hw_pci struct to initialise the PCI system.
  66  */
  67 void pci_common_init_dev(struct device *, struct hw_pci *);
  68
  69 /*
  70  * Compatibility wrapper for older platforms that do not care about
  71  * passing the parent device.
  72  */
  73 static inline void pci_common_init(struct hw_pci *hw)
  74 {
  75         pci_common_init_dev(NULL, hw);
  76 }
  77
  78 /*
  79  * Setup early fixed I/O mapping.
  80  */
  81 #if defined(CONFIG_PCI)
  82 extern void pci_map_io_early(unsigned long pfn);
  83 #else
  84 static inline void pci_map_io_early(unsigned long pfn) {}
  85 #endif
  86
  87 /*
  88  * PCI controllers
  89  */
  90 extern struct pci_ops iop3xx_ops;
  91 extern int iop3xx_pci_setup(int nr, struct pci_sys_data *);
  92 extern void iop3xx_pci_preinit(void);
  93 extern void iop3xx_pci_preinit_cond(void);
  94
  95 extern struct pci_ops dc21285_ops;
  96 extern int dc21285_setup(int nr, struct pci_sys_data *);
  97 extern void dc21285_preinit(void);
  98 extern void dc21285_postinit(void);
  99
 100 #endif /* __ASM_MACH_PCI_H */