acrn-hypervisor/devicemodel/include/pciio.h

/*-
 * Copyright (c) 1997, Stefan Esser <se@FreeBSD.ORG>
 * Copyright (c) 1997, 1998, 1999, Kenneth D. Merry <ken@FreeBSD.ORG>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice unmodified, this list of conditions, and the following
 *    disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 *	$FreeBSD$
 *
 */

#ifndef _PCIIO_H_
#define	_PCIIO_H_

#include "asm/ioctl.h"

#define PCI_MAXNAMELEN	16

typedef enum {
	PCI_GETCONF_LAST_DEVICE,
	PCI_GETCONF_LIST_CHANGED,
	PCI_GETCONF_MORE_DEVS,
	PCI_GETCONF_ERROR
} pci_getconf_status;

typedef enum {
	PCI_GETCONF_NO_MATCH		= 0x0000,
	PCI_GETCONF_MATCH_DOMAIN	= 0x0001,
	PCI_GETCONF_MATCH_BUS		= 0x0002,
	PCI_GETCONF_MATCH_DEV		= 0x0004,
	PCI_GETCONF_MATCH_FUNC		= 0x0008,
	PCI_GETCONF_MATCH_NAME		= 0x0010,
	PCI_GETCONF_MATCH_UNIT		= 0x0020,
	PCI_GETCONF_MATCH_VENDOR	= 0x0040,
	PCI_GETCONF_MATCH_DEVICE	= 0x0080,
	PCI_GETCONF_MATCH_CLASS		= 0x0100
} pci_getconf_flags;

struct pcisel {
	u_int32_t	domain;	/* domain number */
	u_int8_t	bus;	/* bus number */
	u_int8_t	dev;	/* device on this bus */
	u_int8_t	func;	/* function on this device */
};

struct pci_conf {
	struct pcisel	sel;		/* domain+bus+slot+function */
	u_int8_t	hdr;		/* PCI header type */
	u_int16_t	subvendor;	/* card vendor ID */
	u_int16_t	subdevice;	/* card device ID, assigned by
					 * card vendor
					 */
	u_int16_t	vendor;		/* chip vendor ID */
	u_int16_t	device;		/* chip device ID, assigned by
					 * chip vendor
					 */
	u_int8_t	pc_class;	/* chip PCI class */
	u_int8_t	subclass;	/* chip PCI subclass */
	u_int8_t	progif;		/* chip PCI programming interface */
	u_int8_t	revid;		/* chip revision ID */
	char		pd_name[PCI_MAXNAMELEN + 1];  /* device name */
	u_long		pd_unit;	/* device unit number */
};

struct pci_match_conf {
	struct pcisel		sel;		/* domain+bus+slot+function */
	char			pd_name[PCI_MAXNAMELEN + 1];  /* device name */
	u_long			pd_unit;	/* Unit number */
	u_int16_t		vendor;		/* PCI Vendor ID */
	u_int16_t		device;		/* PCI Device ID */
	u_int8_t		pc_class;	/* PCI class */
	pci_getconf_flags	flags;		/* Matching expression */
};

struct pci_conf_io {
	u_int32_t		pat_buf_len;	/* pattern buffer length */
	u_int32_t		num_patterns;	/* number of patterns */
	struct pci_match_conf	*patterns;	/* pattern buffer */
	u_int32_t		match_buf_len;	/* match buffer length */
	u_int32_t		num_matches;	/* number of matches returned */
	struct pci_conf		*matches;	/* match buffer */
	u_int32_t		offset;		/* offset into device list */
	u_int32_t		generation;	/* device list generation */
	pci_getconf_status	status;		/* request status */
};

struct pci_io {
	struct pcisel	sel;	/* device to operate on */
	int		reg;	/* configuration register to examine */
	int		width;	/* width (in bytes) of read or write */
	u_int32_t	data;	/* data to write or result of read */
};

struct pci_bar_io {
	struct pcisel	sel;	/* device to operate on */
	int		reg;	/* starting address of BAR */
	int		pbi_enabled;	/* decoding enabled */
	uint64_t	base;	/* current value of BAR */
	uint64_t	length;	/* length of BAR */
};

struct pci_vpd_element {
	char		keyword[2];
	uint8_t		flags;
	uint8_t		datalen;
	uint8_t		data[0];
};

#define	PVE_FLAG_IDENT		0x01	/* Element is the string identifier */
#define	PVE_FLAG_RW		0x02	/* Element is read/write */

#define	PVE_NEXT(pve)							\
	((struct pci_vpd_element *)((char *)(pve) +			\
	    sizeof(struct pci_vpd_element) + (pve)->datalen))

struct pci_list_vpd_io {
	struct pcisel	plvi_sel;	/* device to operate on */
	size_t		plvi_len;	/* size of the data area */
	struct pci_vpd_element *plvi_data;
};

#define	PCIOCGETCONF	_IOWR('p', 5, struct pci_conf_io)
#define	PCIOCREAD	_IOWR('p', 2, struct pci_io)
#define	PCIOCWRITE	_IOWR('p', 3, struct pci_io)
#define	PCIOCATTACHED	_IOWR('p', 4, struct pci_io)
#define	PCIOCGETBAR	_IOWR('p', 6, struct pci_bar_io)
#define	PCIOCLISTVPD	_IOWR('p', 7, struct pci_list_vpd_io)

#endif /* !_PCIIO_H_ */