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

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  *  arch/arm/include/asm/mach/pci.h
   4  *
   5  *  Copyright (C) 2000 Russell King
   6  */
   7
   8 #ifndef __ASM_MACH_PCI_H
   9 #define __ASM_MACH_PCI_H
  10
  11 #include <linux/ioport.h>
  12
  13 struct pci_sys_data;
  14 struct pci_ops;
  15 struct pci_bus;
  16 struct pci_host_bridge;
  17 struct device;
  18
  19 struct hw_pci {
  20         struct pci_ops  *ops;
  21         int             nr_controllers;
  22         void            **private_data;
  23         int             (*setup)(int nr, struct pci_sys_data *);
  24         int             (*scan)(int nr, struct pci_host_bridge *);
  25         void            (*preinit)(void);
  26         void            (*postinit)(void);
  27         u8              (*swizzle)(struct pci_dev *dev, u8 *pin);
  28         int             (*map_irq)(const struct pci_dev *dev, u8 slot, u8 pin);
  29 };
  30
  31 /*
  32  * Per-controller structure
  33  */
  34 struct pci_sys_data {
  35         struct list_head node;
  36         int             busnr;          /* primary bus number                   */
  37         u64             mem_offset;     /* bus->cpu memory mapping offset       */
  38         unsigned long   io_offset;      /* bus->cpu IO mapping offset           */
  39         struct pci_bus  *bus;           /* PCI bus                              */
  40         struct list_head resources;     /* root bus resources (apertures)       */
  41         struct resource io_res;
  42         char            io_res_name[12];
  43                                         /* Bridge swizzling                     */
  44         u8              (*swizzle)(struct pci_dev *, u8 *);
  45                                         /* IRQ mapping                          */
  46         int             (*map_irq)(const struct pci_dev *, u8, u8);
  47         void            *private_data;  /* platform controller private data     */
  48 };
  49
  50 /*
  51  * Call this with your hw_pci struct to initialise the PCI system.
  52  */
  53 void pci_common_init_dev(struct device *, struct hw_pci *);
  54
  55 /*
  56  * Compatibility wrapper for older platforms that do not care about
  57  * passing the parent device.
  58  */
  59 static inline void pci_common_init(struct hw_pci *hw)
  60 {
  61         pci_common_init_dev(NULL, hw);
  62 }
  63
  64 /*
  65  * Setup early fixed I/O mapping.
  66  */
  67 #if defined(CONFIG_PCI)
  68 extern void pci_map_io_early(unsigned long pfn);
  69 #else
  70 static inline void pci_map_io_early(unsigned long pfn) {}
  71 #endif
  72
  73 /*
  74  * PCI controllers
  75  */
  76 extern struct pci_ops iop3xx_ops;
  77 extern int iop3xx_pci_setup(int nr, struct pci_sys_data *);
  78 extern void iop3xx_pci_preinit(void);
  79 extern void iop3xx_pci_preinit_cond(void);
  80
  81 extern struct pci_ops dc21285_ops;
  82 extern int dc21285_setup(int nr, struct pci_sys_data *);
  83 extern void dc21285_preinit(void);
  84 extern void dc21285_postinit(void);
  85
  86 #endif /* __ASM_MACH_PCI_H */