FreeBSD/Linux Kernel Cross Reference
sys/dev/mmc/mmcbr_if.m
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: releng/6.4/sys/dev/mmc/mmcbr_if.m 164433 2006-11-20 07:16:28Z imp $
27 #
28
29 #include <sys/types.h>
30 #include <dev/mmc/bridge.h>
31 #include <dev/mmc/mmcreg.h>
32
33 #
34 # This is the interface that a mmc bridge chip gives to the mmc bus
35 # that attaches to the mmc bridge.
36 #
37
38 INTERFACE mmcbr;
39
40 #
41 # Called by the mmcbus to setup the IO pins correctly, the voltage to use
42 # for the card, the type of selects, power modes and bus width.
43 #
44 METHOD int update_ios {
45 device_t brdev;
46 device_t reqdev;
47 };
48
49 #
50 # Called by the mmcbus or its children to schedule a mmc request. These
51 # requests are queued. Time passes. The bridge then gets notification
52 # of the status of request, who then notifies the requesting device via
53 # the xfer_done mmcbus method.
54 #
55 METHOD int request {
56 device_t brdev;
57 device_t reqdev;
58 struct mmc_request *req;
59 };
60
61 #
62 # Called by mmcbus to get the read only status bits.
63 #
64 METHOD int get_ro {
65 device_t brdev;
66 device_t reqdev;
67 };
68
69 #
70 # Claim the current bridge, blocking the current thread until the host
71 # is no longer busy.
72 #
73 METHOD int acquire_host {
74 device_t brdev;
75 device_t reqdev;
76 }
77
78 #
79 # Release the current bridge.
80 #
81 METHOD int release_host {
82 device_t brdev;
83 device_t reqdev;
84 }
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