1 /* $OpenBSD: cy82c693.c,v 1.5 2004/06/13 21:49:25 niklas Exp $ */
2 /* $NetBSD: cy82c693.c,v 1.1 2000/06/06 03:07:39 thorpej Exp $ */
3
4 /*-
5 * Copyright (c) 2000 The NetBSD Foundation, Inc.
6 * All rights reserved.
7 *
8 * This code is derived from software contributed to The NetBSD Foundation
9 * by Jason R. Thorpe.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 3. All advertising materials mentioning features or use of this software
20 * must display the following acknowledgement:
21 * This product includes software developed by the NetBSD
22 * Foundation, Inc. and its contributors.
23 * 4. Neither the name of The NetBSD Foundation nor the names of its
24 * contributors may be used to endorse or promote products derived
25 * from this software without specific prior written permission.
26 *
27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
30 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
37 * POSSIBILITY OF SUCH DAMAGE.
38 */
39
40 /*
41 * Common routines to read/write control registers on the Cypress 82c693
42 * hyperCache(tm) Stand-Alone PCI Peripheral Controller with USB.
43 */
44
45 #include <sys/cdefs.h> /* RCS ID & Copyright macro defns */
46
47 #include <sys/param.h>
48 #include <sys/device.h>
49 #include <sys/systm.h>
50 #include <sys/lock.h>
51
52 #include <machine/bus.h>
53
54 #include <dev/pci/pcireg.h>
55 #include <dev/pci/pcivar.h>
56
57 #include <dev/pci/cy82c693reg.h>
58 #include <dev/pci/cy82c693var.h>
59
60 static struct cy82c693_handle cyhc_handle;
61 static int cyhc_initialized;
62
63 struct simplelock cyhc_slock;
64
65 #define CYHC_LOCK(s) \
66 do { \
67 s = splhigh(); \
68 simple_lock(&cyhc_slock); \
69 } while (0)
70
71 #define CYHC_UNLOCK(s) \
72 do { \
73 simple_unlock(&cyhc_slock); \
74 splx(s); \
75 } while (0)
76
77 const struct cy82c693_handle *
78 cy82c693_init(bus_space_tag_t iot)
79 {
80 bus_space_handle_t ioh;
81 int s;
82 int error;
83
84 simple_lock_init(&cyhc_slock);
85
86 CYHC_LOCK(s);
87
88 if (cyhc_initialized) {
89 CYHC_UNLOCK(s);
90 if (iot != cyhc_handle.cyhc_iot)
91 panic("cy82c693_init");
92 return (&cyhc_handle);
93 }
94
95 if ((error = bus_space_map(iot, CYHC_CONFIG_ADDR, 2, 0, &ioh)) != 0) {
96 CYHC_UNLOCK(s);
97 printf("cy82c693_init: bus_space_map failed (%d)", error);
98 return (NULL);
99 }
100
101 cyhc_handle.cyhc_iot = iot;
102 cyhc_handle.cyhc_ioh = ioh;
103
104 cyhc_initialized = 1;
105
106 CYHC_UNLOCK(s);
107
108 return (&cyhc_handle);
109 }
110
111 u_int8_t
112 cy82c693_read(const struct cy82c693_handle *cyhc, int reg)
113 {
114 int s;
115 u_int8_t rv;
116
117 CYHC_LOCK(s);
118
119 if (cyhc_initialized == 0) {
120 CYHC_UNLOCK(s);
121 panic("cy82c693_read");
122 }
123
124 bus_space_write_1(cyhc->cyhc_iot, cyhc->cyhc_ioh, 0, reg);
125 rv = bus_space_read_1(cyhc->cyhc_iot, cyhc->cyhc_ioh, 1);
126
127 CYHC_UNLOCK(s);
128
129 return (rv);
130 }
131
132 void
133 cy82c693_write(const struct cy82c693_handle *cyhc, int reg, u_int8_t val)
134 {
135 int s;
136
137 CYHC_LOCK(s);
138
139 if (cyhc_initialized == 0) {
140 CYHC_UNLOCK(s);
141 panic("cy82c693_write");
142 }
143
144 bus_space_write_1(cyhc->cyhc_iot, cyhc->cyhc_ioh, 0, reg);
145 bus_space_write_1(cyhc->cyhc_iot, cyhc->cyhc_ioh, 1, val);
146
147 CYHC_UNLOCK(s);
148 }