1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
|
/*-
* SPDX-License-Identifier: BSD-2-Clause
*
* Copyright (c) 2004 Jason L. Wright (jason@thought.net)
* Copyright (c) 2005 Marius Strobl <marius@FreeBSD.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
* from: OpenBSD: clkbrd.c,v 1.5 2004/10/01 18:18:49 jason Exp
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/resource.h>
#include <sys/rman.h>
#include <dev/led/led.h>
#include <dev/ofw/ofw_bus.h>
#include <machine/bus.h>
#include <machine/resource.h>
#include <sparc64/fhc/clkbrdreg.h>
#define CLKBRD_NREG 3
#define CLKBRD_CF 0
#define CLKBRD_CLK 1
#define CLKBRD_CLKVER 2
struct clkbrd_softc {
device_t sc_dev;
struct resource *sc_res[CLKBRD_NREG];
int sc_rid[CLKBRD_NREG];
bus_space_tag_t sc_bt[CLKBRD_NREG];
bus_space_handle_t sc_bh[CLKBRD_NREG];
uint8_t sc_clk_ctrl;
struct cdev *sc_led_dev;
int sc_flags;
#define CLKBRD_HAS_CLKVER (1 << 0)
};
static devclass_t clkbrd_devclass;
static device_probe_t clkbrd_probe;
static device_attach_t clkbrd_attach;
static device_detach_t clkbrd_detach;
static void clkbrd_free_resources(struct clkbrd_softc *);
static void clkbrd_led_func(void *, int);
static device_method_t clkbrd_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, clkbrd_probe),
DEVMETHOD(device_attach, clkbrd_attach),
DEVMETHOD(device_detach, clkbrd_detach),
{ 0, 0 }
};
static driver_t clkbrd_driver = {
"clkbrd",
clkbrd_methods,
sizeof(struct clkbrd_softc),
};
DRIVER_MODULE(clkbrd, fhc, clkbrd_driver, clkbrd_devclass, 0, 0);
static int
clkbrd_probe(device_t dev)
{
if (strcmp(ofw_bus_get_name(dev), "clock-board") == 0) {
device_set_desc(dev, "Clock Board");
return (0);
}
return (ENXIO);
}
static int
clkbrd_attach(device_t dev)
{
struct clkbrd_softc *sc;
int i, slots;
uint8_t r;
sc = device_get_softc(dev);
sc->sc_dev = dev;
for (i = CLKBRD_CF; i <= CLKBRD_CLKVER; i++) {
sc->sc_rid[i] = i;
sc->sc_res[i] = bus_alloc_resource_any(sc->sc_dev,
SYS_RES_MEMORY, &sc->sc_rid[i], RF_ACTIVE);
if (sc->sc_res[i] == NULL) {
if (i != CLKBRD_CLKVER) {
device_printf(sc->sc_dev,
"could not allocate resource %d\n", i);
goto fail;
}
continue;
}
sc->sc_bt[i] = rman_get_bustag(sc->sc_res[i]);
sc->sc_bh[i] = rman_get_bushandle(sc->sc_res[i]);
if (i == CLKBRD_CLKVER)
sc->sc_flags |= CLKBRD_HAS_CLKVER;
}
slots = 4;
r = bus_space_read_1(sc->sc_bt[CLKBRD_CLK], sc->sc_bh[CLKBRD_CLK],
CLK_STS1);
switch (r & CLK_STS1_SLOTS_MASK) {
case CLK_STS1_SLOTS_16:
slots = 16;
break;
case CLK_STS1_SLOTS_8:
slots = 8;
break;
case CLK_STS1_SLOTS_4:
if (sc->sc_flags & CLKBRD_HAS_CLKVER) {
r = bus_space_read_1(sc->sc_bt[CLKBRD_CLKVER],
sc->sc_bh[CLKBRD_CLKVER], CLKVER_SLOTS);
if (r != 0 &&
(r & CLKVER_SLOTS_MASK) == CLKVER_SLOTS_PLUS)
slots = 5;
}
}
device_printf(sc->sc_dev, "Sun Enterprise Exx00 machine: %d slots\n",
slots);
sc->sc_clk_ctrl = bus_space_read_1(sc->sc_bt[CLKBRD_CLK],
sc->sc_bh[CLKBRD_CLK], CLK_CTRL);
sc->sc_led_dev = led_create(clkbrd_led_func, sc, "clockboard");
return (0);
fail:
clkbrd_free_resources(sc);
return (ENXIO);
}
static int
clkbrd_detach(device_t dev)
{
struct clkbrd_softc *sc;
sc = device_get_softc(dev);
led_destroy(sc->sc_led_dev);
bus_space_write_1(sc->sc_bt[CLKBRD_CLK], sc->sc_bh[CLKBRD_CLK],
CLK_CTRL, sc->sc_clk_ctrl);
bus_space_read_1(sc->sc_bt[CLKBRD_CLK], sc->sc_bh[CLKBRD_CLK],
CLK_CTRL);
clkbrd_free_resources(sc);
return (0);
}
static void
clkbrd_free_resources(struct clkbrd_softc *sc)
{
int i;
for (i = CLKBRD_CF; i <= CLKBRD_CLKVER; i++)
if (sc->sc_res[i] != NULL)
bus_release_resource(sc->sc_dev, SYS_RES_MEMORY,
sc->sc_rid[i], sc->sc_res[i]);
}
static void
clkbrd_led_func(void *arg, int onoff)
{
struct clkbrd_softc *sc;
uint8_t r;
sc = (struct clkbrd_softc *)arg;
r = bus_space_read_1(sc->sc_bt[CLKBRD_CLK], sc->sc_bh[CLKBRD_CLK],
CLK_CTRL);
if (onoff)
r |= CLK_CTRL_RLED;
else
r &= ~CLK_CTRL_RLED;
bus_space_write_1(sc->sc_bt[CLKBRD_CLK], sc->sc_bh[CLKBRD_CLK],
CLK_CTRL, r);
bus_space_read_1(sc->sc_bt[CLKBRD_CLK], sc->sc_bh[CLKBRD_CLK],
CLK_CTRL);
}
|
