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 msi_controller *msi_ctrl; 21 struct pci_ops *ops; 22 int nr_controllers; 23 unsigned int io_optional:1; 24 void **private_data; 25 int (*setup)(int nr, struct pci_sys_data *); 26 int (*scan)(int nr, struct pci_host_bridge *); 27 void (*preinit)(void); 28 void (*postinit)(void); 29 u8 (*swizzle)(struct pci_dev *dev, u8 *pin); 30 int (*map_irq)(const struct pci_dev *dev, u8 slot, u8 pin); 31 resource_size_t (*align_resource)(struct pci_dev *dev, 32 const struct resource *res, 33 resource_size_t start, 34 resource_size_t size, 35 resource_size_t align); 36 }; 37 38 /* 39 * Per-controller structure 40 */ 41 struct pci_sys_data { 42 struct list_head node; 43 int busnr; /* primary bus number */ 44 u64 mem_offset; /* bus->cpu memory mapping offset */ 45 unsigned long io_offset; /* bus->cpu IO mapping offset */ 46 struct pci_bus *bus; /* PCI bus */ 47 struct list_head resources; /* root bus resources (apertures) */ 48 struct resource io_res; 49 char io_res_name[12]; 50 /* Bridge swizzling */ 51 u8 (*swizzle)(struct pci_dev *, u8 *); 52 /* IRQ mapping */ 53 int (*map_irq)(const struct pci_dev *, u8, u8); 54 void *private_data; /* platform controller private data */ 55 }; 56 57 /* 58 * Call this with your hw_pci struct to initialise the PCI system. 59 */ 60 void pci_common_init_dev(struct device *, struct hw_pci *); 61 62 /* 63 * Compatibility wrapper for older platforms that do not care about 64 * passing the parent device. 65 */ 66 static inline void pci_common_init(struct hw_pci *hw) 67 { 68 pci_common_init_dev(NULL, hw); 69 } 70 71 /* 72 * Setup early fixed I/O mapping. 73 */ 74 #if defined(CONFIG_PCI) 75 extern void pci_map_io_early(unsigned long pfn); 76 #else 77 static inline void pci_map_io_early(unsigned long pfn) {} 78 #endif 79 80 /* 81 * PCI controllers 82 */ 83 extern struct pci_ops iop3xx_ops; 84 extern int iop3xx_pci_setup(int nr, struct pci_sys_data *); 85 extern void iop3xx_pci_preinit(void); 86 extern void iop3xx_pci_preinit_cond(void); 87 88 extern struct pci_ops dc21285_ops; 89 extern int dc21285_setup(int nr, struct pci_sys_data *); 90 extern void dc21285_preinit(void); 91 extern void dc21285_postinit(void); 92 93 #endif /* __ASM_MACH_PCI_H */ 94