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/*-
* 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.
*
* $FreeBSD$
*/
#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 transction 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
*/
enum smbus_ivars {
SMBUS_IVAR_ADDR, /* slave address of the device */
};
int smbus_request_bus(device_t, device_t, int);
int smbus_release_bus(device_t, device_t);
device_t smbus_alloc_bus(device_t);
int smbus_error(int error);
void smbus_intr(device_t, u_char, char low, char high, int error);
#define SMBUS_ACCESSOR(var, ivar, type) \
__BUS_ACCESSOR(smbus, var, SMBUS, ivar, type)
SMBUS_ACCESSOR(addr, ADDR, int)
#undef SMBUS_ACCESSOR
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
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