| b.liu | e958203 | 2025-04-17 19:18:16 +0800 | [diff] [blame^] | 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 */ |