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f7b7769172
non-device code. * Re-implement the method dispatch to improve efficiency. The new system takes about 40ns for a method dispatch on a 300Mhz PII which is only 10ns slower than a direct function call on the same hardware. This changes the new-bus ABI slightly so make sure you re-compile any driver modules which you use.
108 lines
2.1 KiB
Objective-C
108 lines
2.1 KiB
Objective-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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#include <sys/bus.h>
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INTERFACE iicbus;
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#
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# Interpret interrupt
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#
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METHOD int intr {
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device_t dev;
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int event;
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char *buf;
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};
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#
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# iicbus callback
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#
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METHOD int callback {
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device_t dev;
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int index;
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caddr_t data;
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};
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#
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# Send REPEATED_START condition
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#
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METHOD int repeated_start {
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device_t dev;
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u_char slave;
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int timeout;
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};
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#
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# Send START condition
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#
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METHOD int start {
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device_t dev;
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u_char slave;
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int timeout;
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};
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#
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# Send STOP condition
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#
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METHOD int stop {
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device_t dev;
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};
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#
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# Read from I2C bus
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#
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METHOD int read {
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device_t dev;
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char *buf;
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int len;
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int *bytes;
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int last;
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int delay;
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};
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#
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# Write to the I2C bus
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#
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METHOD int write {
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device_t dev;
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char *buf;
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int len;
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int *bytes;
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int timeout;
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};
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#
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# Reset I2C bus
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#
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METHOD int reset {
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device_t dev;
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u_char speed;
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u_char addr;
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u_char *oldaddr;
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};
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