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Annotation of sys/dev/isa/sb_isapnp.c, Revision 1.1.1.1

1.1       nbrk        1: /*     $OpenBSD: sb_isapnp.c,v 1.13 2002/03/14 01:26:56 millert Exp $  */
                      2: /*     $NetBSD: sb_isa.c,v 1.3 1997/03/20 11:03:11 mycroft Exp $       */
                      3:
                      4: /*
                      5:  * Copyright (c) 1991-1993 Regents of the University of California.
                      6:  * All rights reserved.
                      7:  *
                      8:  * Redistribution and use in source and binary forms, with or without
                      9:  * modification, are permitted provided that the following conditions
                     10:  * are met:
                     11:  * 1. Redistributions of source code must retain the above copyright
                     12:  *    notice, this list of conditions and the following disclaimer.
                     13:  * 2. Redistributions in binary form must reproduce the above copyright
                     14:  *    notice, this list of conditions and the following disclaimer in the
                     15:  *    documentation and/or other materials provided with the distribution.
                     16:  * 3. All advertising materials mentioning features or use of this software
                     17:  *    must display the following acknowledgement:
                     18:  *     This product includes software developed by the Computer Systems
                     19:  *     Engineering Group at Lawrence Berkeley Laboratory.
                     20:  * 4. Neither the name of the University nor of the Laboratory may be used
                     21:  *    to endorse or promote products derived from this software without
                     22:  *    specific prior written permission.
                     23:  *
                     24:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
                     25:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                     26:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     27:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
                     28:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     29:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
                     30:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     31:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     32:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     33:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     34:  * SUCH DAMAGE.
                     35:  *
                     36:  */
                     37:
                     38: #include <sys/param.h>
                     39: #include <sys/systm.h>
                     40: #include <sys/errno.h>
                     41: #include <sys/ioctl.h>
                     42: #include <sys/syslog.h>
                     43: #include <sys/device.h>
                     44: #include <sys/proc.h>
                     45:
                     46: #include <sys/audioio.h>
                     47: #include <dev/audio_if.h>
                     48: #include <dev/midi_if.h>
                     49: #include <dev/mulaw.h>
                     50:
                     51: #include <dev/isa/isavar.h>
                     52: #include <dev/isa/isadmavar.h>
                     53:
                     54: #include <dev/isa/sbreg.h>
                     55: #include <dev/isa/sbvar.h>
                     56:
                     57: #include <dev/isa/sbdspvar.h>
                     58:
                     59: int    sb_isapnp_match(struct device *, void *, void *);
                     60: void   sb_isapnp_attach(struct device *, struct device *, void *);
                     61:
                     62: struct cfattach sb_isapnp_ca = {
                     63:        sizeof(struct sbdsp_softc), sb_isapnp_match, sb_isapnp_attach
                     64: };
                     65:
                     66: /*
                     67:  * Probe / attach routines.
                     68:  */
                     69:
                     70: /*
                     71:  * Probe for the soundblaster hardware.
                     72:  */
                     73: int
                     74: sb_isapnp_match(parent, match, aux)
                     75:        struct device *parent;
                     76:        void *match, *aux;
                     77: {
                     78:        struct isa_attach_args *ia = aux;
                     79:
                     80:        if (ia->ipa_ndrq < 1)
                     81:                return 0;
                     82:        return 1;
                     83: }
                     84:
                     85: /*
                     86:  * Attach hardware to driver, attach hardware driver to audio
                     87:  * pseudo-device driver.
                     88:  */
                     89: void
                     90: sb_isapnp_attach(parent, self, aux)
                     91:        struct device *parent, *self;
                     92:        void *aux;
                     93: {
                     94:        struct sbdsp_softc *sc = (struct sbdsp_softc *) self;
                     95:        struct isa_attach_args *ia = aux;
                     96:
                     97:        sc->sc_iot = ia->ia_iot;
                     98:        sc->sc_ioh = ia->ipa_io[0].h;
                     99:        sc->sc_irq = ia->ipa_irq[0].num;
                    100:        sc->sc_iobase = ia->ipa_io[0].base;
                    101:        sc->sc_ic = ia->ia_ic;
                    102:        sc->sc_drq8 = ia->ipa_drq[0].num;
                    103:
                    104:        if (ia->ipa_ndrq > 1 && ia->ipa_drq[0].num != ia->ipa_drq[1].num) {
                    105:                /* Some cards have the 16 bit drq first */
                    106:                if (sc->sc_drq8 >= 4) {
                    107:                        sc->sc_drq16 = sc->sc_drq8;
                    108:                        sc->sc_drq8 = ia->ipa_drq[1].num;
                    109:                } else
                    110:                        sc->sc_drq16 = ia->ipa_drq[1].num;
                    111:        } else
                    112:                sc->sc_drq16 = DRQUNK;
                    113:
                    114: #if NMIDI > 0
                    115:        if (ia->ipa_nio > 1) {
                    116:                sc->sc_mpu_sc.iobase = ia->ipa_io[1].base;
                    117:                sc->sc_mpu_sc.ioh = ia->ipa_io[1].h;
                    118:        } else
                    119:                sc->sc_mpu_sc.iobase = 0;
                    120: #endif
                    121:
                    122:        if (!sbmatch(sc)) {
                    123:                printf(": sbmatch failed\n");
                    124:                return;
                    125:        }
                    126:
                    127:        sc->sc_isa = parent->dv_parent;
                    128:        sbattach(sc);
                    129: }