mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-07-05 18:56:15 +09:00
6fb3b72e87
Add simple PCI access routines for x86 which permit use before relocation. The normal PCI stack is still used, but for pre-relocation use there can only ever be a single hose. After relocation, fall back to the normal access, although even then on x86 machines there is normally only a single PCI bus. Signed-off-by: Simon Glass <sjg@chromium.org>
50 lines
1.5 KiB
C
50 lines
1.5 KiB
C
|
|
/*
|
|
* (C) Copyright 2002
|
|
* Daniel Engström, Omicron Ceti AB, daniel@omicron.se
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#ifndef _PCI_I386_H_
|
|
#define _PCI_I386_H_
|
|
|
|
#define DEFINE_PCI_DEVICE_TABLE(_table) \
|
|
const struct pci_device_id _table[]
|
|
|
|
struct pci_controller;
|
|
|
|
void pci_setup_type1(struct pci_controller *hose);
|
|
|
|
/**
|
|
* board_pci_setup_hose() - Set up the PCI hose
|
|
*
|
|
* This is called by the common x86 PCI code to set up the PCI controller
|
|
* hose. It may be called when no memory/BSS is available so should just
|
|
* store things in 'hose' and not in BSS variables.
|
|
*/
|
|
void board_pci_setup_hose(struct pci_controller *hose);
|
|
|
|
/**
|
|
* pci_early_init_hose() - Set up PCI host before relocation
|
|
*
|
|
* This allocates memory for, sets up and returns the PCI hose. It can be
|
|
* called before relocation. The hose will be stored in gd->arch.hose for
|
|
* later use, but will become invalid one DRAM is available.
|
|
*/
|
|
int pci_early_init_hose(struct pci_controller **hosep);
|
|
|
|
/*
|
|
* Simple PCI access routines - these work from either the early PCI hose
|
|
* or the 'real' one, created after U-Boot has memory available
|
|
*/
|
|
unsigned int pci_read_config8(pci_dev_t dev, unsigned where);
|
|
unsigned int pci_read_config16(pci_dev_t dev, unsigned where);
|
|
unsigned int pci_read_config32(pci_dev_t dev, unsigned where);
|
|
|
|
void pci_write_config8(pci_dev_t dev, unsigned where, unsigned value);
|
|
void pci_write_config16(pci_dev_t dev, unsigned where, unsigned value);
|
|
void pci_write_config32(pci_dev_t dev, unsigned where, unsigned value);
|
|
|
|
#endif
|