emu10kx-midi.c

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    1 /*-
    2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
    3  *
    4  * Copyright (c) 1999 Seigo Tanimura
    5  * Copyright (c) 2003 Mathew Kanner
    6  * Copyright (c) 2003-2006 Yuriy Tsibizov <yuriy.tsibizov@gfk.ru>
    7  * All rights reserved
    8  *
    9  * Redistribution and use in source and binary forms, with or without
   10  * modification, are permitted provided that the following conditions
   11  * are met:
   12  * 1. Redistributions of source code must retain the above copyright
   13  *    notice, this list of conditions and the following disclaimer.
   14  * 2. Redistributions in binary form must reproduce the above copyright
   15  *    notice, this list of conditions and the following disclaimer in the
   16  *    documentation and/or other materials provided with the distribution.
   17  *
   18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   19  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   20  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   21  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   22  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   23  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   24  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   25  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   26  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   27  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   28  * SUCH DAMAGE.
   29  *
   30  * $FreeBSD$
   31  */
   32 
   33 #include <sys/param.h>
   34 #include <sys/types.h>
   35 #include <sys/bus.h>
   36 #include <machine/bus.h>
   37 #include <sys/rman.h>
   38 #include <sys/systm.h>
   39 #include <sys/sbuf.h>
   40 #include <sys/queue.h>
   41 #include <sys/lock.h>
   42 #include <sys/mutex.h>
   43 
   44 #ifdef HAVE_KERNEL_OPTION_HEADERS
   45 #include "opt_snd.h"
   46 #endif
   47 
   48 #include <dev/sound/chip.h>
   49 #include <dev/sound/pcm/sound.h>
   50 
   51 #include <dev/sound/midi/midi.h>
   52 #include <dev/sound/midi/mpu401.h>
   53 #include "mpufoi_if.h"
   54 
   55 #include <dev/sound/pci/emuxkireg.h>
   56 #include <dev/sound/pci/emu10kx.h>
   57 
   58 struct emu_midi_softc {
   59         struct mtx      mtx;
   60         device_t        dev;
   61         struct mpu401   *mpu;
   62         mpu401_intr_t   *mpu_intr;
   63         struct emu_sc_info *card;
   64         int             port;                   /* I/O port or I/O ptr reg */
   65         int             is_emu10k1;
   66         int             fflags;                 /* File flags */
   67         int             ihandle;                /* interrupt manager handle */
   68 };
   69 
   70 static uint32_t emu_midi_card_intr(void *p, uint32_t arg);
   71 
   72 static unsigned char
   73 emu_mread(struct mpu401 *arg __unused, void *cookie, int reg)
   74 {
   75         struct emu_midi_softc *sc = cookie;
   76         unsigned int d;
   77 
   78         d = 0;
   79         if (sc->is_emu10k1)
   80                 d = emu_rd(sc->card, 0x18 + reg, 1);
   81         else
   82                 d = emu_rdptr(sc->card, 0, sc->port + reg);
   83 
   84         return (d);
   85 }
   86 
   87 static void
   88 emu_mwrite(struct mpu401 *arg __unused, void *cookie, int reg, unsigned char b)
   89 {
   90         struct emu_midi_softc *sc = cookie;
   91 
   92         if (sc->is_emu10k1)
   93                 emu_wr(sc->card, 0x18 + reg, b, 1);
   94         else
   95                 emu_wrptr(sc->card, 0, sc->port + reg, b);
   96 }
   97 
   98 static int
   99 emu_muninit(struct mpu401 *arg __unused, void *cookie)
  100 {
  101         struct emu_midi_softc *sc = cookie;
  102 
  103         mtx_lock(&sc->mtx);
  104         sc->mpu_intr = NULL;
  105         mtx_unlock(&sc->mtx);
  106 
  107         return (0);
  108 }
  109 
  110 static kobj_method_t emu_mpu_methods[] = {
  111         KOBJMETHOD(mpufoi_read, emu_mread),
  112         KOBJMETHOD(mpufoi_write, emu_mwrite),
  113         KOBJMETHOD(mpufoi_uninit, emu_muninit),
  114         KOBJMETHOD_END
  115 };
  116 static DEFINE_CLASS(emu_mpu, emu_mpu_methods, 0);
  117 
  118 static uint32_t
  119 emu_midi_card_intr(void *p, uint32_t intr_status)
  120 {
  121         struct emu_midi_softc *sc = (struct emu_midi_softc *)p;
  122         if (sc->mpu_intr)
  123                 (sc->mpu_intr) (sc->mpu);
  124         if (sc->mpu_intr == NULL) {
  125                 /* We should read MIDI event to unlock card after
  126                  * interrupt. XXX - check, why this happens.  */
  127                 if (bootverbose)
  128                         device_printf(sc->dev, "midi interrupt %08x without interrupt handler, force mread!\n", intr_status);
  129                 (void)emu_mread((void *)(NULL), sc, 0);
  130         }
  131         return (intr_status); /* Acknowledge everything */
  132 }
  133 
  134 static void
  135 emu_midi_intr(void *p)
  136 {
  137         (void)emu_midi_card_intr(p, 0);
  138 }
  139 
  140 static int
  141 emu_midi_probe(device_t dev)
  142 {
  143         struct emu_midi_softc *scp;
  144         uintptr_t func, is_emu10k1;
  145 
  146         BUS_READ_IVAR(device_get_parent(dev), dev, 0, &func);
  147         if (func != SCF_MIDI)
  148                 return (ENXIO);
  149 
  150         scp = device_get_softc(dev);
  151         bzero(scp, sizeof(*scp));
  152         BUS_READ_IVAR(device_get_parent(dev), dev, EMU_VAR_ISEMU10K1, &is_emu10k1);
  153         scp->is_emu10k1 = is_emu10k1 ? 1 : 0;
  154 
  155         device_set_desc(dev, "EMU10Kx MIDI Interface");
  156         return (0);
  157 }
  158 
  159 static int
  160 emu_midi_attach(device_t dev)
  161 {
  162         struct emu_midi_softc * scp;
  163         struct sndcard_func *func;
  164         struct emu_midiinfo *midiinfo;
  165         uint32_t inte_val, ipr_val;
  166 
  167         scp = device_get_softc(dev);
  168         func = device_get_ivars(dev);
  169 
  170         scp->dev = dev;
  171         midiinfo = (struct emu_midiinfo *)func->varinfo;
  172         scp->port = midiinfo->port;
  173         scp->card = midiinfo->card;
  174 
  175         mtx_init(&scp->mtx, device_get_nameunit(dev), "midi softc", MTX_DEF);
  176 
  177         if (scp->is_emu10k1) {
  178                 /* SB Live! - only one MIDI device here */
  179                 inte_val = 0;
  180                 /* inte_val |= EMU_INTE_MIDITXENABLE;*/
  181                 inte_val |= EMU_INTE_MIDIRXENABLE;
  182                 ipr_val = EMU_IPR_MIDITRANSBUFE;
  183                 ipr_val |= EMU_IPR_MIDIRECVBUFE;
  184         } else {
  185                 if (scp->port == EMU_A_MUDATA1) {
  186                         /* EXTERNAL MIDI (AudigyDrive) */
  187                         inte_val = 0;
  188                         /* inte_val |= A_EMU_INTE_MIDITXENABLE1;*/
  189                         inte_val |= EMU_INTE_MIDIRXENABLE;
  190                         ipr_val = EMU_IPR_MIDITRANSBUFE;
  191                         ipr_val |= EMU_IPR_MIDIRECVBUFE;
  192                 } else {
  193                         /* MIDI hw config port 2 */
  194                         inte_val = 0;
  195                         /* inte_val |= A_EMU_INTE_MIDITXENABLE2;*/
  196                         inte_val |= EMU_INTE_A_MIDIRXENABLE2;
  197                         ipr_val = EMU_IPR_A_MIDITRANSBUFE2;
  198                         ipr_val |= EMU_IPR_A_MIDIRECBUFE2;
  199                 }
  200         }
  201 
  202         scp->ihandle = emu_intr_register(scp->card, inte_val, ipr_val, &emu_midi_card_intr, scp);
  203         /* Init the interface. */
  204         scp->mpu = mpu401_init(&emu_mpu_class, scp, emu_midi_intr, &scp->mpu_intr);
  205         if (scp->mpu == NULL) {
  206                 emu_intr_unregister(scp->card, scp->ihandle);
  207                 mtx_destroy(&scp->mtx);
  208                 return (ENOMEM);
  209         }
  210         /*
  211          * XXX I don't know how to check for Live!Drive / AudigyDrive
  212          * presence. Let's hope that IR enabling code will not harm if
  213          * it is not present.
  214          */
  215         if (scp->is_emu10k1)
  216                 emu_enable_ir(scp->card);
  217         else {
  218                 if (scp->port == EMU_A_MUDATA1)
  219                         emu_enable_ir(scp->card);
  220         }
  221 
  222         return (0);
  223 }
  224 
  225 static int
  226 emu_midi_detach(device_t dev)
  227 {
  228         struct emu_midi_softc *scp;
  229 
  230         scp = device_get_softc(dev);
  231         mpu401_uninit(scp->mpu);
  232         emu_intr_unregister(scp->card, scp->ihandle);
  233         mtx_destroy(&scp->mtx);
  234         return (0);
  235 }
  236 
  237 static device_method_t emu_midi_methods[] = {
  238         DEVMETHOD(device_probe, emu_midi_probe),
  239         DEVMETHOD(device_attach, emu_midi_attach),
  240         DEVMETHOD(device_detach, emu_midi_detach),
  241 
  242         DEVMETHOD_END
  243 };
  244 
  245 static driver_t emu_midi_driver = {
  246         "midi",
  247         emu_midi_methods,
  248         sizeof(struct emu_midi_softc),
  249 };
  250 DRIVER_MODULE(snd_emu10kx_midi, emu10kx, emu_midi_driver, 0, 0);
  251 MODULE_DEPEND(snd_emu10kx_midi, snd_emu10kx, SND_EMU10KX_MINVER, SND_EMU10KX_PREFVER, SND_EMU10KX_MAXVER);
  252 MODULE_DEPEND(snd_emu10kx_midi, sound, SOUND_MINVER, SOUND_PREFVER, SOUND_MAXVER);
  253 MODULE_VERSION(snd_emu10kx_midi, SND_EMU10KX_PREFVER);

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FreeBSD/Linux Kernel Cross Reference sys/dev/sound/pci/emu10kx-midi.c

FreeBSD/Linux Kernel Cross Reference
sys/dev/sound/pci/emu10kx-midi.c