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
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
|
/*-
* SPDX-License-Identifier: BSD-2-Clause
* Copyright (c) 2015-2018 Tai-hwa Liang <avatar@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 AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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.
*/
#include <sys/param.h>
#include <sys/types.h>
#include <sys/bus.h>
#include <machine/bus.h>
#include <sys/rman.h>
#include <sys/systm.h>
#include <sys/kobj.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#ifdef HAVE_KERNEL_OPTION_HEADERS
#include "opt_snd.h"
#endif
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#include <dev/sound/pcm/sound.h>
#include <dev/sound/midi/midi.h>
#include <dev/sound/midi/mpu401.h>
#include <dev/sound/pci/csareg.h>
#include <dev/sound/pci/csavar.h>
#include "mpufoi_if.h"
/* pulled from mpu401.c */
#define MPU_DATAPORT 0
#define MPU_CMDPORT 1
#define MPU_STATPORT 1
#define MPU_RESET 0xff
#define MPU_UART 0x3f
#define MPU_ACK 0xfe
#define MPU_STATMASK 0xc0
#define MPU_OUTPUTBUSY 0x40
#define MPU_INPUTBUSY 0x80
/* device private data */
struct csa_midi_softc {
/* hardware resources */
int io_rid; /* io rid */
struct resource *io; /* io */
struct mtx mtx;
device_t dev;
struct mpu401 *mpu;
mpu401_intr_t *mpu_intr;
int mflags; /* MIDI flags */
};
static struct kobj_class csamidi_mpu_class;
static u_int32_t
csamidi_readio(struct csa_midi_softc *scp, u_long offset)
{
if (offset < BA0_AC97_RESET)
return bus_space_read_4(rman_get_bustag(scp->io), rman_get_bushandle(scp->io), offset) & 0xffffffff;
else
return (0);
}
static void
csamidi_writeio(struct csa_midi_softc *scp, u_long offset, u_int32_t data)
{
if (offset < BA0_AC97_RESET)
bus_space_write_4(rman_get_bustag(scp->io), rman_get_bushandle(scp->io), offset, data);
}
static void
csamidi_midi_intr(void *arg)
{
struct csa_midi_softc *scp = (struct csa_midi_softc *)arg;
if (scp->mpu_intr)
(scp->mpu_intr)(scp->mpu);
}
static unsigned char
csamidi_mread(struct mpu401 *arg __unused, void *cookie, int reg)
{
struct csa_midi_softc *scp = cookie;
unsigned int rc;
unsigned int uart_stat;
rc = 0;
/* hacks to convert hardware status to MPU compatible ones */
switch (reg) {
case MPU_STATPORT:
uart_stat = csamidi_readio(scp, BA0_MIDSR);
if (uart_stat & MIDSR_TBF)
rc |= MPU_OUTPUTBUSY; /* Tx buffer full */
if (uart_stat & MIDSR_RBE)
rc |= MPU_INPUTBUSY;
break;
case MPU_DATAPORT:
rc = csamidi_readio(scp, BA0_MIDRP);
break;
default:
printf("csamidi_mread: unknown register %d\n", reg);
break;
}
return (rc);
}
static void
csamidi_mwrite(struct mpu401 *arg __unused, void *cookie, int reg, unsigned char b)
{
struct csa_midi_softc *scp = cookie;
unsigned int val;
switch (reg) {
case MPU_CMDPORT:
switch (b)
{
case MPU_RESET:
/* preserve current operation mode */
val = csamidi_readio(scp, BA0_MIDCR);
/* reset the MIDI port */
csamidi_writeio(scp, BA0_MIDCR, MIDCR_MRST);
csamidi_writeio(scp, BA0_MIDCR, MIDCR_MLB);
csamidi_writeio(scp, BA0_MIDCR, 0x00);
/* restore previous operation mode */
csamidi_writeio(scp, BA0_MIDCR, val);
break;
case MPU_UART:
/* switch to UART mode, no-op */
default:
break;
}
break;
case MPU_DATAPORT:
/* put the MIDI databyte in the write port */
csamidi_writeio(scp, BA0_MIDWP, b);
break;
default:
printf("csamidi_mwrite: unknown register %d\n", reg);
break;
}
}
static int
csamidi_muninit(struct mpu401 *arg __unused, void *cookie)
{
struct csa_midi_softc *scp = cookie;
mtx_lock(&scp->mtx);
scp->mpu_intr = NULL;
mtx_unlock(&scp->mtx);
return (0);
}
static int
midicsa_probe(device_t dev)
{
struct sndcard_func *func;
/* The parent device has already been probed. */
func = device_get_ivars(dev);
if (func == NULL || func->func != SCF_MIDI)
return (ENXIO);
device_set_desc(dev, "CS461x MIDI");
return (0);
}
static int
midicsa_attach(device_t dev)
{
struct csa_midi_softc *scp;
int rc = ENXIO;
scp = device_get_softc(dev);
bzero(scp, sizeof(struct csa_midi_softc));
scp->dev = dev;
/* allocate the required resources */
scp->io_rid = PCIR_BAR(0);
scp->io = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
&scp->io_rid, RF_ACTIVE);
if (scp->io == NULL)
goto err0;
/* init the fake MPU401 interface. */
scp->mpu = mpu401_init(&csamidi_mpu_class, scp, csamidi_midi_intr,
&scp->mpu_intr);
if (scp->mpu == NULL) {
rc = ENOMEM;
goto err1;
}
mtx_init(&scp->mtx, device_get_nameunit(dev), "csamidi softc",
MTX_DEF);
/* reset the MIDI port */
csamidi_writeio(scp, BA0_MIDCR, MIDCR_MRST);
/* MIDI transmit enable, no interrupt */
csamidi_writeio(scp, BA0_MIDCR, MIDCR_TXE | MIDCR_RXE);
csamidi_writeio(scp, BA0_HICR, HICR_IEV | HICR_CHGM);
return (0);
err1:
bus_release_resource(dev, SYS_RES_MEMORY, scp->io_rid, scp->io);
scp->io = NULL;
err0:
return (rc);
}
static int
midicsa_detach(device_t dev)
{
struct csa_midi_softc *scp;
int rc = 0;
scp = device_get_softc(dev);
rc = mpu401_uninit(scp->mpu);
if (rc)
return (rc);
if (scp->io != NULL) {
bus_release_resource(dev, SYS_RES_MEMORY, scp->io_rid,
scp->io);
scp->io = NULL;
}
mtx_destroy(&scp->mtx);
return (rc);
}
static kobj_method_t csamidi_mpu_methods[] = {
KOBJMETHOD(mpufoi_read, csamidi_mread),
KOBJMETHOD(mpufoi_write, csamidi_mwrite),
KOBJMETHOD(mpufoi_uninit, csamidi_muninit),
KOBJMETHOD_END
};
static DEFINE_CLASS(csamidi_mpu, csamidi_mpu_methods, 0);
static device_method_t midicsa_methods[] = {
DEVMETHOD(device_probe, midicsa_probe),
DEVMETHOD(device_attach, midicsa_attach),
DEVMETHOD(device_detach, midicsa_detach),
DEVMETHOD_END
};
static driver_t midicsa_driver = {
"midi",
midicsa_methods,
sizeof(struct csa_midi_softc),
};
DRIVER_MODULE(snd_csa_midi, csa, midicsa_driver, 0, 0);
MODULE_DEPEND(snd_csa_midi, snd_csa, 1, 1, 1);
MODULE_DEPEND(snd_csa_midi, sound, SOUND_MINVER, SOUND_PREFVER, SOUND_MAXVER);
MODULE_VERSION(snd_csa_midi, 1);
|
