sys/bus/smbus/smbconf.h

root/sys/bus/smbus/smbconf.h
/*-
 * Copyright (c) 1998 Nicolas Souchu
 * 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, 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 AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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: src/sys/dev/smbus/smbconf.h,v 1.7.14.1 2006/09/22 19:19:16 jhb Exp $
 * $DragonFly: src/sys/bus/smbus/smbconf.h,v 1.4 2003/11/14 21:46:18 daver Exp $
 */
#ifndef __SMBONF_H
#define __SMBONF_H

#include <sys/queue.h>

#define SMBPRI (PZERO+8)                /* XXX sleep/wakeup queue priority */

#define n(flags) (~(flags) & (flags))

/*
 * How tsleep() is called in smb_request_bus().
 */
#define SMB_DONTWAIT    0
#define SMB_NOINTR      0
#define SMB_WAIT        0x1
#define SMB_INTR        0x2

/*
 * callback index
 */
#define SMB_REQUEST_BUS 0x1
#define SMB_RELEASE_BUS 0x2

/*
 * SMB bus errors
 */
#define SMB_ENOERR      0x0
#define SMB_EBUSERR     0x1
#define SMB_ENOTSUPP    0x2
#define SMB_ENOACK      0x4
#define SMB_ECOLLI      0x8
#define SMB_EABORT      0x10
#define SMB_ETIMEOUT    0x20
#define SMB_EBUSY       0x40
#define SMB_EINVAL      0x100

/*
 * How Quick command is executed
 */
#define SMB_QWRITE      0x0
#define SMB_QREAD       0x1

/*
 * smbus transaction op with pass-thru capabilities
 *
 * This smbus function is capable of doing a smbus command transaction
 * (read or write), and can be flagged to not issue the 'cmd' and/or
 * issue or expect a count field as well as flagged for chaining (no STOP),
 * which gives it an i2c pass-through capability.
 *
 * NOSTOP- Caller chaining transactions, do not issue STOP
 * NOCMD-  Do not transmit the command field
 * NOCNT-  Do not transmit (wr) or expect (rd) the count field
 */
#define SMB_TRANS_NOSTOP        0x0001  /* do not send STOP at end */
#define SMB_TRANS_NOCMD         0x0002  /* ignore cmd field (do not tx) */
#define SMB_TRANS_NOCNT         0x0004  /* do not tx or rx count field */
#define SMB_TRANS_7BIT          0x0008  /* change address mode to 7-bit */
#define SMB_TRANS_10BIT         0x0010  /* change address mode to 10-bit */
#define SMB_TRANS_NOREPORT      0x0020  /* do not report errors */

/*
 * ivars codes
 */

#ifdef _KERNEL

#define SMBUS_IVAR_ADDR 0x1     /* slave address of the device */

int     smbus_request_bus(device_t, device_t, int);
int     smbus_release_bus(device_t, device_t);
int     smbus_error(int error);

void    smbus_intr(device_t, u_char, char low, char high, int error);

u_char  smbus_get_addr(device_t);

extern driver_t smbus_driver;
extern devclass_t smbus_devclass;

#define smbus_quick(bus,slave,how) \
        (SMBUS_QUICK(device_get_parent(bus), slave, how))
#define smbus_sendb(bus,slave,byte) \
        (SMBUS_SENDB(device_get_parent(bus), slave, byte))
#define smbus_recvb(bus,slave,byte) \
        (SMBUS_RECVB(device_get_parent(bus), slave, byte))
#define smbus_writeb(bus,slave,cmd,byte) \
        (SMBUS_WRITEB(device_get_parent(bus), slave, cmd, byte))
#define smbus_writew(bus,slave,cmd,word) \
        (SMBUS_WRITEW(device_get_parent(bus), slave, cmd, word))
#define smbus_readb(bus,slave,cmd,byte) \
        (SMBUS_READB(device_get_parent(bus), slave, cmd, byte))
#define smbus_readw(bus,slave,cmd,word) \
        (SMBUS_READW(device_get_parent(bus), slave, cmd, word))
#define smbus_pcall(bus,slave,cmd,sdata,rdata) \
        (SMBUS_PCALL(device_get_parent(bus), slave, cmd, sdata, rdata))
#define smbus_bwrite(bus,slave,cmd,count,buf) \
        (SMBUS_BWRITE(device_get_parent(bus), slave, cmd, count, buf))
#define smbus_bread(bus,slave,cmd,count,buf) \
        (SMBUS_BREAD(device_get_parent(bus), slave, cmd, count, buf))
#define smbus_trans(bus,slave,cmd,op,wbuf,wcount,rbuf,rcount,actualp) \
        (SMBUS_TRANS(device_get_parent(bus), slave, cmd, op,          \
                     wbuf, wcount, rbuf, rcount, actualp))

#define SMBUS_MODVER    1
#define SMBUS_MINVER    1
#define SMBUS_MAXVER    1
#define SMBUS_PREFVER   SMBUS_MODVER

#endif

#endif
DragonflyBSD
