virtio - Get rid of unused flags option in virtio_alloc_virtqueues().
[dragonfly.git] / sys / dev / sound / midi / mpu401.c
blob7d37d9db5e72d2666bd4b286300d418a8c218a25
1 /*-
2 * Copyright (c) 2003 Mathew Kanner
3 * All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following 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.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD: head/sys/dev/sound/midi/mpu401.c 193979 2009-06-11 09:06:09Z ariff $");
30 #include <sys/param.h>
31 #include <sys/types.h>
32 #include <sys/param.h>
33 #include <sys/queue.h>
34 #include <sys/kernel.h>
35 #include <sys/lock.h>
36 #include <sys/mutex.h>
37 #include <sys/proc.h>
38 #include <sys/systm.h>
39 #include <sys/kobj.h>
40 #include <sys/malloc.h>
41 #include <sys/bus.h> /* to get driver_intr_t */
43 #ifdef HAVE_KERNEL_OPTION_HEADERS
44 #include "opt_snd.h"
45 #endif
47 #include <dev/sound/midi/mpu401.h>
48 #include <dev/sound/midi/midi.h>
50 #include "mpu_if.h"
51 #include "mpufoi_if.h"
53 #ifndef KOBJMETHOD_END
54 #define KOBJMETHOD_END { NULL, NULL }
55 #endif
57 #define MPU_DATAPORT 0
58 #define MPU_CMDPORT 1
59 #define MPU_STATPORT 1
60 #define MPU_RESET 0xff
61 #define MPU_UART 0x3f
62 #define MPU_ACK 0xfe
63 #define MPU_STATMASK 0xc0
64 #define MPU_OUTPUTBUSY 0x40
65 #define MPU_INPUTBUSY 0x80
66 #define MPU_TRYDATA 50
67 #define MPU_DELAY 2500
69 #define CMD(m,d) MPUFOI_WRITE(m, m->cookie, MPU_CMDPORT,d)
70 #define STATUS(m) MPUFOI_READ(m, m->cookie, MPU_STATPORT)
71 #define READ(m) MPUFOI_READ(m, m->cookie, MPU_DATAPORT)
72 #define WRITE(m,d) MPUFOI_WRITE(m, m->cookie, MPU_DATAPORT,d)
74 struct mpu401 {
75 KOBJ_FIELDS;
76 struct snd_midi *mid;
77 int flags;
78 driver_intr_t *si;
79 void *cookie;
80 struct callout timer;
83 static void mpu401_timeout(void *m);
84 static mpu401_intr_t mpu401_intr;
86 static int mpu401_minit(struct snd_midi *, void *);
87 static int mpu401_muninit(struct snd_midi *, void *);
88 static int mpu401_minqsize(struct snd_midi *, void *);
89 static int mpu401_moutqsize(struct snd_midi *, void *);
90 static void mpu401_mcallback(struct snd_midi *, void *, int);
91 static void mpu401_mcallbackp(struct snd_midi *, void *, int);
92 static const char *mpu401_mdescr(struct snd_midi *, void *, int);
93 static const char *mpu401_mprovider(struct snd_midi *, void *);
95 static kobj_method_t mpu401_methods[] = {
96 KOBJMETHOD(mpu_init, mpu401_minit),
97 KOBJMETHOD(mpu_uninit, mpu401_muninit),
98 KOBJMETHOD(mpu_inqsize, mpu401_minqsize),
99 KOBJMETHOD(mpu_outqsize, mpu401_moutqsize),
100 KOBJMETHOD(mpu_callback, mpu401_mcallback),
101 KOBJMETHOD(mpu_callbackp, mpu401_mcallbackp),
102 KOBJMETHOD(mpu_descr, mpu401_mdescr),
103 KOBJMETHOD(mpu_provider, mpu401_mprovider),
104 KOBJMETHOD_END
107 DEFINE_CLASS(mpu401, mpu401_methods, 0);
109 void
110 mpu401_timeout(void *a)
112 struct mpu401 *m = (struct mpu401 *)a;
114 if (m->si)
115 (m->si)(m->cookie);
118 static int
119 mpu401_intr(struct mpu401 *m)
121 #define MPU_INTR_BUF 16
122 MIDI_TYPE b[MPU_INTR_BUF];
123 int i;
124 int s;
127 kprintf("mpu401_intr\n");
129 #define RXRDY(m) ( (STATUS(m) & MPU_INPUTBUSY) == 0)
130 #define TXRDY(m) ( (STATUS(m) & MPU_OUTPUTBUSY) == 0)
131 #if 0
132 #define D(x,l) kprintf("mpu401_intr %d %x %s %s\n",l, x, x&MPU_INPUTBUSY?"RX":"", x&MPU_OUTPUTBUSY?"TX":"")
133 #else
134 #define D(x,l)
135 #endif
136 i = 0;
137 s = STATUS(m);
138 D(s, 1);
139 while ((s & MPU_INPUTBUSY) == 0 && i < MPU_INTR_BUF) {
140 b[i] = READ(m);
142 kprintf("mpu401_intr in i %d d %d\n", i, b[i]);
144 i++;
145 s = STATUS(m);
147 if (i)
148 midi_in(m->mid, b, i);
149 i = 0;
150 while (!(s & MPU_OUTPUTBUSY) && i < MPU_INTR_BUF) {
151 if (midi_out(m->mid, b, 1)) {
153 kprintf("mpu401_intr out i %d d %d\n", i, b[0]);
156 WRITE(m, *b);
157 } else {
159 kprintf("mpu401_intr write: no output\n");
161 return 0;
163 i++;
164 /* DELAY(100); */
165 s = STATUS(m);
168 if ((m->flags & M_TXEN) && (m->si)) {
169 callout_reset(&m->timer, 1, mpu401_timeout, m);
171 return (m->flags & M_TXEN) == M_TXEN;
174 struct mpu401 *
175 mpu401_init(kobj_class_t cls, void *cookie, driver_intr_t softintr,
176 mpu401_intr_t ** cb)
178 struct mpu401 *m;
180 *cb = NULL;
181 m = kmalloc(sizeof(*m), M_MIDI, M_WAITOK | M_ZERO);
183 kobj_init((kobj_t)m, cls);
185 callout_init_mp(&m->timer);
187 m->si = softintr;
188 m->cookie = cookie;
189 m->flags = 0;
191 m->mid = midi_init(&mpu401_class, 0, 0, m);
192 if (!m->mid)
193 goto err;
194 *cb = mpu401_intr;
195 return m;
196 err:
197 kprintf("mpu401_init error\n");
198 kfree(m, M_MIDI);
199 return NULL;
203 mpu401_uninit(struct mpu401 *m)
205 int retval;
207 CMD(m, MPU_RESET);
208 retval = midi_uninit(m->mid);
209 if (retval)
210 return retval;
211 kfree(m, M_MIDI);
212 return 0;
215 static int
216 mpu401_minit(struct snd_midi *sm, void *arg)
218 struct mpu401 *m = arg;
219 int i;
221 CMD(m, MPU_RESET);
222 CMD(m, MPU_UART);
223 return 0;
224 i = 0;
225 while (++i < 2000) {
226 if (RXRDY(m))
227 if (READ(m) == MPU_ACK)
228 break;
231 if (i < 2000) {
232 CMD(m, MPU_UART);
233 return 0;
235 kprintf("mpu401_minit failed active sensing\n");
236 return 1;
241 mpu401_muninit(struct snd_midi *sm, void *arg)
243 struct mpu401 *m = arg;
245 return MPUFOI_UNINIT(m, m->cookie);
249 mpu401_minqsize(struct snd_midi *sm, void *arg)
251 return 128;
255 mpu401_moutqsize(struct snd_midi *sm, void *arg)
257 return 128;
260 static void
261 mpu401_mcallback(struct snd_midi *sm, void *arg, int flags)
263 struct mpu401 *m = arg;
264 #if 0
265 kprintf("mpu401_callback %s %s %s %s\n",
266 flags & M_RX ? "M_RX" : "",
267 flags & M_TX ? "M_TX" : "",
268 flags & M_RXEN ? "M_RXEN" : "",
269 flags & M_TXEN ? "M_TXEN" : "");
270 #endif
271 if (flags & M_TXEN && m->si) {
272 callout_reset(&m->timer, 1, mpu401_timeout, m);
274 m->flags = flags;
277 static void
278 mpu401_mcallbackp(struct snd_midi *sm, void *arg, int flags)
280 /* kprintf("mpu401_callbackp\n"); */
281 mpu401_mcallback(sm, arg, flags);
284 static const char *
285 mpu401_mdescr(struct snd_midi *sm, void *arg, int verbosity)
288 return "descr mpu401";
291 static const char *
292 mpu401_mprovider(struct snd_midi *m, void *arg)
294 return "provider mpu401";