FreeBSD/Linux Kernel Cross Reference
sys/dev/ow/own.h
1 /*-
2 * Copyright (c) 2015 M. Warner Losh <imp@FreeBSD.org>
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice unmodified, this list of conditions, and the following
9 * 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 ``AS IS'' AND ANY EXPRESS OR
15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
17 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 *
25 * $FreeBSD$
26 */
27
28 #ifndef DEV_OW_OWN_H
29 #define DEV_OW_OWN_H 1
30
31 #include "own_if.h"
32
33 #define READ_ROM 0x33
34 #define MATCH_ROM 0x55
35 #define SKIP_ROM 0xcc
36 #define ALARM_SEARCH 0xec
37 #define SEARCH_ROM 0xf0
38
39 static inline int
40 own_send_command(device_t pdev, struct ow_cmd *cmd)
41 {
42 device_t ndev = device_get_parent(pdev);
43
44 return OWN_SEND_COMMAND(ndev, pdev, cmd);
45 }
46
47 /*
48 * How args for own_acquire_bus
49 */
50 #define OWN_WAIT 1
51 #define OWN_DONTWAIT 2
52
53 static inline int
54 own_acquire_bus(device_t pdev, int how)
55 {
56 device_t ndev = device_get_parent(pdev);
57
58 return OWN_ACQUIRE_BUS(ndev, pdev, how);
59 }
60
61 static inline void
62 own_release_bus(device_t pdev)
63 {
64 device_t ndev = device_get_parent(pdev);
65
66 OWN_RELEASE_BUS(ndev, pdev);
67 }
68
69 static inline uint8_t
70 own_crc(device_t pdev, uint8_t *buffer, size_t len)
71 {
72 device_t ndev = device_get_parent(pdev);
73
74 return OWN_CRC(ndev, pdev, buffer, len);
75 }
76
77 static inline void
78 own_self_command(device_t pdev, struct ow_cmd *cmd, uint8_t xpt_cmd)
79 {
80 uint8_t *mep;
81
82 memset(cmd, 0, sizeof(*cmd));
83 mep = ow_get_romid(pdev);
84 cmd->rom_cmd[0] = MATCH_ROM;
85 memcpy(&cmd->rom_cmd[1], mep, sizeof(romid_t));
86 cmd->rom_len = 1 + sizeof(romid_t);
87 cmd->xpt_cmd[0] = xpt_cmd;
88 cmd->xpt_len = 1;
89 }
90
91 static inline int
92 own_command_wait(device_t pdev, struct ow_cmd *cmd)
93 {
94 int rv;
95
96 rv = own_acquire_bus(pdev, OWN_WAIT);
97 if (rv != 0)
98 return rv;
99 rv = own_send_command(pdev, cmd);
100 own_release_bus(pdev);
101 return rv;
102 }
103
104 #endif /* DEV_OW_OWLL_H */
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