mmcbus_if.m revision 163516 
1#-
2# Copyright (c) 2006 M. Warner Losh
3# All rights reserved.
4#
5# Redistribution and use in source and binary forms, with or without
6# modification, are permitted provided that the following conditions
7# are met:
8# 1. Redistributions of source code must retain the above copyright
9#    notice, this list of conditions and the following disclaimer.
10# 2. Redistributions in binary form must reproduce the above copyright
11#    notice, this list of conditions and the following disclaimer in the
12#    documentation and/or other materials provided with the distribution.
13#
14# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17# ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24# SUCH DAMAGE.
25#
26# $FreeBSD: head/sys/dev/mmc/mmcbus_if.m 163516 2006-10-20 06:39:59Z imp $
27#
28
29#include <dev/mmc/mmcreg.h>
30#include <dev/mmc/bridge.h>
31
32#
33# This is the set of callbacks that mmc bridges call into the bus, or
34# that mmc/sd card drivers call to make requests.
35#
36
37INTERFACE mmcbus;
38
39#
40# Queue and wait for a request.
41#
42METHOD int wait_for_request {
43	device_t	brdev;
44	device_t	reqdev;
45	struct mmc_request *req;
46};
47
48#
49# Claim the current bridge, blocking the current thread until the host
50# is no longer busy.
51#
52METHOD int acquire_bus {
53	device_t	brdev;
54	device_t	reqdev;
55}
56
57#
58# Release the current bridge.
59#
60METHOD int release_bus {
61	device_t	brdev;
62	device_t	reqdev;
63}
64