pci_machdep.h

MIPS处理器的bootloader,龙芯就是用的修改过的PMON2

/*	$Id: pci_machdep.h,v 1.1 2002/02/12 13:50:08 pefo Exp $ */
/*	$OpenBSD: pci_machdep.h,v 1.4 1998/08/06 15:04:01 pefo Exp $	*/

/*
 * Copyright (c) 1996 Carnegie-Mellon University.
 * All rights reserved.
 *
 * Author: Chris G. Demetriou
 *
 * Permission to use, copy, modify and distribute this software and
 * its documentation is hereby granted, provided that both the copyright
 * notice and this permission notice appear in all copies of the
 * software, derivative works or modified versions, and any portions
 * thereof, and that both notices appear in supporting documentation.
 *
 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
 * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
 *
 * Carnegie Mellon requests users of this software to return to
 *
 *  Software Distribution Coordinator  or  [e-mail]
 *  School of Computer Science
 *  Carnegie Mellon University
 *  Pittsburgh PA 15213-3890
 *
 * any improvements or extensions that they make and grant Carnegie the
 * rights to redistribute these changes.
 */

/*
 * Machine-specific definitions for PCI autoconfiguration.
 */
#include "target/ck3.h"

#include <pmon.h>

/*
 * Types provided to machine-independent PCI code
 */
typedef struct p4e_pci_chipset *pci_chipset_tag_t;
typedef u_long pcitag_t;
typedef u_long pci_intr_handle_t;

void	 _pci_flush __P((void));
int	 _pci_hwinit __P((int, bus_space_tag_t, bus_space_tag_t));
void	 _pci_hwreinit __P((void));
pcitag_t _pci_make_tag __P((int, int, int));
void	 _pci_break_tag __P((pcitag_t, int *, int *, int *));
pcireg_t _pci_conf_read __P((pcitag_t, int));
void	 _pci_conf_write __P((pcitag_t, int, pcireg_t));
int	 _pci_map_port __P((pcitag_t, int, unsigned int *));
int	 _pci_map_io __P((pcitag_t, int, vm_offset_t *, vm_offset_t *));
int	 _pci_map_mem __P((pcitag_t, int, vm_offset_t *, vm_offset_t *));
void	*_pci_map_int __P((pcitag_t, int, int (*)(void *), void *));
void	 _pci_devinfo __P((pcireg_t, pcireg_t, int *, char *));
void	 _pci_businit __P((int));
void	 _pci_devinit __P((int));
vm_offset_t _pci_cpumap __P((vm_offset_t, unsigned int));
vm_offset_t _pci_dmamap __P((vm_offset_t, unsigned int));
vm_offset_t _isa_cpumap __P((vm_offset_t, unsigned int));
vm_offset_t _isa_dmamap __P((vm_offset_t, unsigned int));

void     _pci_bdfprintf (int bus, int device, int function, const char *fmt, ...);
void     _pci_tagprintf (pcitag_t tag, const char *fmt, ...);
int      _pci_canscan __P((pcitag_t tag)); 

int	 _pci_canscan __P((pcitag_t tag));

/* sigh... compatibility */
#define pci_hwinit			_pci_hwinit
#define pci_hwreinit			_pci_hwreinit
#define pci_make_tag			_pci_make_tag
#define pci_break_tag			_pci_break_tag
#define pci_conf_read(a, b, c)		_pci_conf_read(b, c)
#define pci_conf_write(a, b, c, d)	_pci_conf_write(b, c, d)
#define pci_map_port			_pci_map_port
#define pci_map_io			_pci_map_io
#define pci_map_mem			_pci_map_mem
#define pci_map_int			_pci_map_int
#define pci_devinfo			_pci_devinfo
#define pci_configure			_pci_configure
#define pci_allocate_mem		_pci_allocate_mem
#define pci_allocate_io			_pci_allocate_io
#define	vtophys(p)			_pci_dmamap((vm_offset_t)p, 1)
#define pci_decompose_tag(a, b, c, d, e)	_pci_break_tag(b, c, d, e)

#define	pci_intr_map(a, b, c, d, e)		(*e = -1, 0)
#define	pci_intr_string(a,b)			("generic polled")
#define	pci_intr_establish(a, b, c, d, e, f)	tgt_poll_register((c), (d), (e))
#define pci_attach_hook(parent, self, pba)
#define pci_bus_maxdevs(c, b)		32

int pci_ether_hw_addr __P((void *sc, u_int8_t *, u_int8_t, u_int8_t));
void pci_sync_cache __P((void *, vm_offset_t, size_t, int));

#define	PCI_FIRST_DEVICE	1	/* Which device to scan first */
#define PCI_FIRST_BUS		0
#define PCI_INT_0		0
#define PCI_INT_A		11
#define PCI_INT_B		10
#define PCI_INT_C		9
#define PCI_INT_D		8
#define PCI_CACHE_LINE_SIZE	8	/* expressed in 32 bit words */

/*
 * Any physcal to virtual conversion of CPU addresses.
 */
#define VA_TO_PA(x)     (x)
#define PA_TO_VA(x)     (x)