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 #ifdef CONFIG_PCI_MSI
  23         struct msi_controller *msi_ctrl;
  24 #endif
  25         struct pci_ops  *ops;
  26         int             nr_controllers;
  27         void            **private_data;
  28         int             (*setup)(int nr, struct pci_sys_data *);
  29         struct pci_bus *(*scan)(int nr, struct pci_sys_data *);
  30         void            (*preinit)(void);
  31         void            (*postinit)(void);
  32         u8              (*swizzle)(struct pci_dev *dev, u8 *pin);
  33         int             (*map_irq)(const struct pci_dev *dev, u8 slot, u8 pin);
  34         resource_size_t (*align_resource)(struct pci_dev *dev,
  35                                           const struct resource *res,
  36                                           resource_size_t start,
  37                                           resource_size_t size,
  38                                           resource_size_t align);
  39 };
  40
  41 /*
  42  * Per-controller structure
  43  */
  44 struct pci_sys_data {
  45 #ifdef CONFIG_PCI_MSI
  46         struct msi_controller *msi_ctrl;
  47 #endif
  48         struct list_head node;
  49         int             busnr;          /* primary bus number                   */
  50         u64             mem_offset;     /* bus->cpu memory mapping offset       */
  51         unsigned long   io_offset;      /* bus->cpu IO mapping offset           */
  52         struct pci_bus  *bus;           /* PCI bus                              */
  53         struct list_head resources;     /* root bus resources (apertures)       */
  54         struct resource io_res;
  55         char            io_res_name[12];
  56                                         /* Bridge swizzling                     */
  57         u8              (*swizzle)(struct pci_dev *, u8 *);
  58                                         /* IRQ mapping                          */
  59         int             (*map_irq)(const struct pci_dev *, u8, u8);
  60                                         /* Resource alignement requirements     */
  61         resource_size_t (*align_resource)(struct pci_dev *dev,
  62                                           const struct resource *res,
  63                                           resource_size_t start,
  64                                           resource_size_t size,
  65                                           resource_size_t align);
  66         void            *private_data;  /* platform controller private data     */
  67 };
  68
  69 /*
  70  * Call this with your hw_pci struct to initialise the PCI system.
  71  */
  72 void pci_common_init_dev(struct device *, struct hw_pci *);
  73
  74 /*
  75  * Compatibility wrapper for older platforms that do not care about
  76  * passing the parent device.
  77  */
  78 static inline void pci_common_init(struct hw_pci *hw)
  79 {
  80         pci_common_init_dev(NULL, hw);
  81 }
  82
  83 /*
  84  * Setup early fixed I/O mapping.
  85  */
  86 #if defined(CONFIG_PCI)
  87 extern void pci_map_io_early(unsigned long pfn);
  88 #else
  89 static inline void pci_map_io_early(unsigned long pfn) {}
  90 #endif
  91
  92 /*
  93  * PCI controllers
  94  */
  95 extern struct pci_ops iop3xx_ops;
  96 extern int iop3xx_pci_setup(int nr, struct pci_sys_data *);
  97 extern void iop3xx_pci_preinit(void);
  98 extern void iop3xx_pci_preinit_cond(void);
  99
 100 extern struct pci_ops dc21285_ops;
 101 extern int dc21285_setup(int nr, struct pci_sys_data *);
 102 extern void dc21285_preinit(void);
 103 extern void dc21285_postinit(void);
 104
 105 #endif /* __ASM_MACH_PCI_H */