Annotation of sys/dev/pci/cy82c693.c, Revision 1.1.1.1
1.1 nbrk 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: }
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