202379af84
Differential Revision: https://reviews.freebsd.org/D1955 Reviewed by: adrian, jhb, wblock Approved by: adrian, jhb
143 lines
4.7 KiB
C
143 lines
4.7 KiB
C
/*-
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* Copyright (c) 1998 Nicolas Souchu
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef __SMBONF_H
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#define __SMBONF_H
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#include <sys/queue.h>
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#define SMBPRI (PZERO+8) /* XXX sleep/wakeup queue priority */
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#define n(flags) (~(flags) & (flags))
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/*
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* How tsleep() is called in smb_request_bus().
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*/
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#define SMB_DONTWAIT 0
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#define SMB_NOINTR 0
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#define SMB_WAIT 0x1
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#define SMB_INTR 0x2
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/*
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* callback index
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*/
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#define SMB_REQUEST_BUS 0x1
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#define SMB_RELEASE_BUS 0x2
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/*
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* SMB bus errors
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*/
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#define SMB_ENOERR 0x0
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#define SMB_EBUSERR 0x1
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#define SMB_ENOTSUPP 0x2
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#define SMB_ENOACK 0x4
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#define SMB_ECOLLI 0x8
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#define SMB_EABORT 0x10
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#define SMB_ETIMEOUT 0x20
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#define SMB_EBUSY 0x40
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#define SMB_EINVAL 0x100
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/*
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* How Quick command is executed
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*/
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#define SMB_QWRITE 0x0
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#define SMB_QREAD 0x1
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/*
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* smbus transction op with pass-thru capabilities
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*
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* This smbus function is capable of doing a smbus command transaction
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* (read or write), and can be flagged to not issue the 'cmd' and/or
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* issue or expect a count field as well as flagged for chaining (no STOP),
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* which gives it an i2c pass-through capability.
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*
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* NOSTOP- Caller chaining transactions, do not issue STOP
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* NOCMD- Do not transmit the command field
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* NOCNT- Do not transmit (wr) or expect (rd) the count field
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*/
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#define SMB_TRANS_NOSTOP 0x0001 /* do not send STOP at end */
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#define SMB_TRANS_NOCMD 0x0002 /* ignore cmd field (do not tx) */
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#define SMB_TRANS_NOCNT 0x0004 /* do not tx or rx count field */
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#define SMB_TRANS_7BIT 0x0008 /* change address mode to 7-bit */
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#define SMB_TRANS_10BIT 0x0010 /* change address mode to 10-bit */
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#define SMB_TRANS_NOREPORT 0x0020 /* do not report errors */
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/*
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* ivars codes
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*/
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enum smbus_ivars {
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SMBUS_IVAR_ADDR, /* slave address of the device */
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};
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int smbus_request_bus(device_t, device_t, int);
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int smbus_release_bus(device_t, device_t);
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device_t smbus_alloc_bus(device_t);
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int smbus_error(int error);
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void smbus_intr(device_t, u_char, char low, char high, int error);
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#define SMBUS_ACCESSOR(var, ivar, type) \
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__BUS_ACCESSOR(smbus, var, SMBUS, ivar, type)
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SMBUS_ACCESSOR(addr, ADDR, int)
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#undef SMBUS_ACCESSOR
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extern driver_t smbus_driver;
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extern devclass_t smbus_devclass;
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#define smbus_quick(bus,slave,how) \
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(SMBUS_QUICK(device_get_parent(bus), slave, how))
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#define smbus_sendb(bus,slave,byte) \
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(SMBUS_SENDB(device_get_parent(bus), slave, byte))
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#define smbus_recvb(bus,slave,byte) \
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(SMBUS_RECVB(device_get_parent(bus), slave, byte))
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#define smbus_writeb(bus,slave,cmd,byte) \
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(SMBUS_WRITEB(device_get_parent(bus), slave, cmd, byte))
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#define smbus_writew(bus,slave,cmd,word) \
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(SMBUS_WRITEW(device_get_parent(bus), slave, cmd, word))
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#define smbus_readb(bus,slave,cmd,byte) \
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(SMBUS_READB(device_get_parent(bus), slave, cmd, byte))
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#define smbus_readw(bus,slave,cmd,word) \
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(SMBUS_READW(device_get_parent(bus), slave, cmd, word))
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#define smbus_pcall(bus,slave,cmd,sdata,rdata) \
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(SMBUS_PCALL(device_get_parent(bus), slave, cmd, sdata, rdata))
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#define smbus_bwrite(bus,slave,cmd,count,buf) \
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(SMBUS_BWRITE(device_get_parent(bus), slave, cmd, count, buf))
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#define smbus_bread(bus,slave,cmd,count,buf) \
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(SMBUS_BREAD(device_get_parent(bus), slave, cmd, count, buf))
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#define smbus_trans(bus,slave,cmd,op,wbuf,wcount,rbuf,rcount,actualp) \
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(SMBUS_TRANS(device_get_parent(bus), slave, cmd, op, \
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wbuf, wcount, rbuf, rcount, actualp))
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#define SMBUS_MODVER 1
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#define SMBUS_MINVER 1
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#define SMBUS_MAXVER 1
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#define SMBUS_PREFVER SMBUS_MODVER
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#endif
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