1 /* 2 * (C) Copyright 2002 3 * Daniel Engström, Omicron Ceti AB, daniel@omicron.se 4 * 5 * SPDX-License-Identifier: GPL-2.0+ 6 */ 7 8 #ifndef _PCI_I386_H_ 9 #define _PCI_I386_H_ 10 11 #include <pci.h> 12 13 /* bus mapping constants (used for PCI core initialization) */ 14 #define PCI_REG_ADDR 0xcf8 15 #define PCI_REG_DATA 0xcfc 16 17 #define PCI_CFG_EN 0x80000000 18 19 #ifndef __ASSEMBLY__ 20 21 #define DEFINE_PCI_DEVICE_TABLE(_table) \ 22 const struct pci_device_id _table[] 23 24 struct pci_controller; 25 26 void pci_setup_type1(struct pci_controller *hose); 27 28 /** 29 * board_pci_setup_hose() - Set up the PCI hose 30 * 31 * This is called by the common x86 PCI code to set up the PCI controller 32 * hose. It may be called when no memory/BSS is available so should just 33 * store things in 'hose' and not in BSS variables. 34 */ 35 void board_pci_setup_hose(struct pci_controller *hose); 36 37 /** 38 * pci_early_init_hose() - Set up PCI host before relocation 39 * 40 * This allocates memory for, sets up and returns the PCI hose. It can be 41 * called before relocation. The hose will be stored in gd->hose for 42 * later use, but will become invalid one DRAM is available. 43 */ 44 int pci_early_init_hose(struct pci_controller **hosep); 45 46 int board_pci_pre_scan(struct pci_controller *hose); 47 int board_pci_post_scan(struct pci_controller *hose); 48 49 /* 50 * Simple PCI access routines - these work from either the early PCI hose 51 * or the 'real' one, created after U-Boot has memory available 52 */ 53 unsigned int x86_pci_read_config8(pci_dev_t dev, unsigned where); 54 unsigned int x86_pci_read_config16(pci_dev_t dev, unsigned where); 55 unsigned int x86_pci_read_config32(pci_dev_t dev, unsigned where); 56 57 void x86_pci_write_config8(pci_dev_t dev, unsigned where, unsigned value); 58 void x86_pci_write_config16(pci_dev_t dev, unsigned where, unsigned value); 59 void x86_pci_write_config32(pci_dev_t dev, unsigned where, unsigned value); 60 61 int pci_x86_read_config(struct udevice *bus, pci_dev_t bdf, uint offset, 62 ulong *valuep, enum pci_size_t size); 63 64 int pci_x86_write_config(struct udevice *bus, pci_dev_t bdf, uint offset, 65 ulong value, enum pci_size_t size); 66 67 #endif /* __ASSEMBLY__ */ 68 69 #endif /* _PCI_I386_H_ */ 70