FreeBSD/Linux Kernel Cross Reference
sys/dev/isa/pas.c

     /*      $OpenBSD: pas.c,v 1.37 2022/11/02 10:41:34 kn Exp $     */
     /*      $NetBSD: pas.c,v 1.37 1998/01/12 09:43:43 thorpej Exp $ */
     
     /*
      * Copyright (c) 1991-1993 Regents of the University of California.
      * 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.
     * 3. All advertising materials mentioning features or use of this software
     *    must display the following acknowledgement:
     *      This product includes software developed by the Computer Systems
     *      Engineering Group at Lawrence Berkeley Laboratory.
     * 4. Neither the name of the University nor of the Laboratory may be used
     *    to endorse or promote products derived from this software without
     *    specific prior written permission.
     *
     * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
     *
     */
    /*
     * jfw 7/13/97 - The soundblaster code requires the generic bus-space 
     * structures to be set up properly.  Rather than go to the effort of making
     * code for a dead line fully generic, properly set up the SB structures and
     * leave the rest x86/ISA/default-configuration specific.  If you have a
     * REAL computer, go buy a REAL sound card.
     */
    /*
     * Todo:
     *      - look at other PAS drivers (for PAS native support)
     *      - use common sb.c once emulation is setup
     */
    
    #include <sys/param.h>
    #include <sys/systm.h>
    #include <sys/errno.h>
    #include <sys/ioctl.h>
    #include <sys/syslog.h>
    #include <sys/device.h>
    
    #include <machine/cpu.h>
    #include <machine/intr.h>
    #include <machine/bus.h>
    
    #include <sys/audioio.h>
    #include <dev/audio_if.h>
    #include <dev/midi_if.h>
    
    #include <dev/isa/isavar.h>
    #include <dev/isa/isadmavar.h>
    
    #include <dev/isa/sbdspvar.h>
    #include <dev/isa/sbreg.h>
    
    #define DEFINE_TRANSLATIONS
    #include <dev/isa/pasreg.h>
    
    #ifdef AUDIO_DEBUG
    #define DPRINTF(x)      if (pasdebug) printf x
    int     pasdebug = 0;
    #else
    #define DPRINTF(x)
    #endif
    
    /*
     * Software state, per SoundBlaster card.
     * The soundblaster has multiple functionality, which we must demultiplex.
     * One approach is to have one major device number for the soundblaster card,
     * and use different minor numbers to indicate which hardware function
     * we want.  This would make for one large driver.  Instead our approach
     * is to partition the design into a set of drivers that share an underlying
     * piece of hardware.  Most things are hard to share, for example, the audio
     * and midi ports.  For audio, we might want to mix two processes' signals,
     * and for midi we might want to merge streams (this is hard due to
     * running status).  Moreover, we should be able to re-use the high-level
     * modules with other kinds of hardware.  In this module, we only handle the
     * most basic communications with the sb card.
     */
    struct pas_softc {
            struct sbdsp_softc sc_sbdsp;    /* use sc_dev, sc_id, sc_ih,
                                             *     sc_iobase, sc_irq, sc_drq
                                             * from here */
            int model;      /* unique to PAS */
           int rev;
   
   };
   
   void    pasconf(int, int, int, int);
   
   
   /*
    * Define our interface to the higher level audio driver.
    */
   
   const struct audio_hw_if pas_hw_if = {
           .open = sbdsp_open,
           .close = sbdsp_close,
           .set_params = sbdsp_set_params,
           .round_blocksize = sbdsp_round_blocksize,
           .halt_output = sbdsp_haltdma,
           .halt_input = sbdsp_haltdma,
           .set_port = sbdsp_mixer_set_port,
           .get_port = sbdsp_mixer_get_port,
           .query_devinfo = sbdsp_mixer_query_devinfo,
           .allocm = sb_malloc,
           .freem = sb_free,
           .round_buffersize = sb_round,
           .trigger_output = sbdsp_trigger_output,
           .trigger_input = sbdsp_trigger_input,
   };
   
   /* The Address Translation code is used to convert I/O register addresses to
      be relative to the given base -register */
   
   static const char *pasnames[] = {
           "",
           "Plus",
           "CDPC",
           "16",
           "16Basic"
   };
   
   /*XXX assume default I/O base address */
   #define pasread(p) inb(p)
   #define paswrite(d, p) outb(p, d)
   
   void
   pasconf(int model, int sbbase, int sbirq, int sbdrq)
   {
           paswrite(0x00, INTERRUPT_MASK);
           /* Local timer control register */
           paswrite(0x36, SAMPLE_COUNTER_CONTROL);
           /* Sample rate timer (16 bit) */
           paswrite(0x36, SAMPLE_RATE_TIMER);
           paswrite(0, SAMPLE_RATE_TIMER);
           /* Local timer control register */
           paswrite(0x74, SAMPLE_COUNTER_CONTROL);
           /* Sample count register (16 bit) */
           paswrite(0x74, SAMPLE_BUFFER_COUNTER);
           paswrite(0, SAMPLE_BUFFER_COUNTER);
   
           paswrite(P_C_PCM_MONO | P_C_PCM_DAC_MODE |
                     P_C_MIXER_CROSS_L_TO_L | P_C_MIXER_CROSS_R_TO_R,
                     PCM_CONTROL);
           paswrite(S_M_PCM_RESET | S_M_FM_RESET |
                     S_M_SB_RESET | S_M_MIXER_RESET, SERIAL_MIXER);
   
   /*XXX*/
           paswrite(I_C_1_BOOT_RESET_ENABLE|1, IO_CONFIGURATION_1);
   
           paswrite(I_C_2_PCM_DMA_DISABLED, IO_CONFIGURATION_2);
           paswrite(I_C_3_PCM_IRQ_DISABLED, IO_CONFIGURATION_3);
           
   #ifdef BROKEN_BUS_CLOCK 
           paswrite(S_C_1_PCS_ENABLE | S_C_1_PCS_STEREO | S_C_1_PCS_REALSOUND |
                     S_C_1_FM_EMULATE_CLOCK, SYSTEM_CONFIGURATION_1);
   #else
           paswrite(S_C_1_PCS_ENABLE | S_C_1_PCS_STEREO | S_C_1_PCS_REALSOUND,
                     SYSTEM_CONFIGURATION_1);     
   #endif
   
           /*XXX*/
           paswrite(0, SYSTEM_CONFIGURATION_2);
           paswrite(0, SYSTEM_CONFIGURATION_3);
   
           /* Sets mute off and selects filter rate of 17.897 kHz */
           paswrite(F_F_MIXER_UNMUTE | 0x01, FILTER_FREQUENCY);
   
           if (model == PAS_16 || model == PAS_16BASIC)
                   paswrite(8, PRESCALE_DIVIDER);
           else
                   paswrite(0, PRESCALE_DIVIDER);
   
           paswrite(P_M_MV508_ADDRESS | P_M_MV508_PCM, PARALLEL_MIXER);
           paswrite(5, PARALLEL_MIXER);
                   
           /*
            * Setup SoundBlaster emulation.
            */
           paswrite((sbbase >> 4) & 0xf, EMULATION_ADDRESS);
           paswrite(E_C_SB_IRQ_translate[sbirq] | E_C_SB_DMA_translate[sbdrq],
                    EMULATION_CONFIGURATION);
           paswrite(C_E_SB_ENABLE, COMPATIBILITY_ENABLE);
   
           /*
            * Set mid-range levels.
            */
           paswrite(P_M_MV508_ADDRESS | P_M_MV508_MODE, PARALLEL_MIXER);
           paswrite(P_M_MV508_LOUDNESS | P_M_MV508_ENHANCE_NONE, PARALLEL_MIXER);  
   
           paswrite(P_M_MV508_ADDRESS | P_M_MV508_MASTER_A, PARALLEL_MIXER);
           paswrite(50, PARALLEL_MIXER);
           paswrite(P_M_MV508_ADDRESS | P_M_MV508_MASTER_B, PARALLEL_MIXER);
           paswrite(50, PARALLEL_MIXER);
   
           paswrite(P_M_MV508_ADDRESS | P_M_MV508_MIXER | P_M_MV508_SB, PARALLEL_MIXER);
           paswrite(P_M_MV508_OUTPUTMIX | 30, PARALLEL_MIXER);
   
           paswrite(P_M_MV508_ADDRESS | P_M_MV508_MIXER | P_M_MV508_MIC, PARALLEL_MIXER);
           paswrite(P_M_MV508_INPUTMIX | 30, PARALLEL_MIXER);
   }
   
   int     pasprobe(struct device *, void *, void *);
   void    pasattach(struct device *, struct device *, void *);
   
   const struct cfattach pas_ca = {
           sizeof(struct pas_softc), pasprobe, pasattach
   };
   
   struct cfdriver pas_cd = {
           NULL, "pas", DV_DULL
   };
   
   /*
    * Probe / attach routines.
    */
   
   /*
    * Probe for the soundblaster hardware.
    */
   int
   pasprobe(struct device *parent, void *match, void *aux)
   {
           struct pas_softc *sc = match;
           struct isa_attach_args *ia = aux;
           int iobase;
           u_char id, t;
   
           /* ensure we can set this up as a sound blaster */
           if (!SB_BASE_VALID(ia->ia_iobase)) {
                   DPRINTF(("pas: configured SB iobase 0x%x invalid\n", ia->ia_iobase));
                   return 0;
           }
   
           /*
            * WARNING: Setting an option like W:1 or so that disables
            * warm boot reset of the card will screw up this detect code
            * something fierce.  Adding code to handle this means possibly
            * interfering with other cards on the bus if you have something
            * on base port 0x388.  SO be forewarned. 
            */
           /* Talk to first board */
           outb(MASTER_DECODE, 0xbc);
           /* Set base address */
   
   #if 0
           /* XXX Need to setup pseudo device */
           /* XXX What are good io addrs ? */
           if (iobase != PAS_DEFAULT_BASE) {
                   DPRINTF(("pas: configured iobase %d invalid\n", iobase));
                   return 0;
           }
   #else
           /* Start out talking to native PAS */
           iobase = PAS_DEFAULT_BASE;
   #endif
   
           outb(MASTER_DECODE, iobase >> 2);
           /* One wait-state */
           paswrite(1, WAIT_STATE);
   
           id = pasread(INTERRUPT_MASK);
           if (id == 0xff || id == 0xfe) {
                   /* sanity */
                   DPRINTF(("pas: bogus card id\n"));
                   return 0;
           }
           /*
            * We probably have a PAS-series board, now check for a
            * PAS2-series board by trying to change the board revision
            * bits.  PAS2-series hardware won't let you do this because
            * the bits are read-only.
            */
           t = id ^ 0xe0;
           paswrite(t, INTERRUPT_MASK);
           t = inb(INTERRUPT_MASK);
           paswrite(id, INTERRUPT_MASK);
   
           if (t != id) {
                   /* Not a PAS2 */
                   DPRINTF(("pas: detected card but PAS2 test failed\n"));
                   return 0;
           }
           /*XXX*/
           t = pasread(OPERATION_MODE_1) & 0xf;
           sc->model = O_M_1_to_card[t];
           if (sc->model != 0) {
                   sc->rev = pasread(BOARD_REV_ID);
           }
           else {
                   DPRINTF(("pas: bogus model id\n"));
                   return 0;
           }
   
           if (sc->model >= 0) {
                   if (ia->ia_irq == IRQUNK) {
                           DPRINTF(("pas: sb emulation requires known irq\n"));
                           return (0);
                   } 
                   pasconf(sc->model, ia->ia_iobase, ia->ia_irq, 1);
           } else {
                   DPRINTF(("pas: could not probe pas\n"));
                   return (0);
           }
   
           /* Now a SoundBlaster, so set up proper bus-space hooks
            * appropriately
            */
   
           sc->sc_sbdsp.sc_iobase = ia->ia_iobase;
           sc->sc_sbdsp.sc_iot = ia->ia_iot;
   
           /* Map i/o space [we map 24 ports which is the max of the sb and pro */
           if (bus_space_map(sc->sc_sbdsp.sc_iot, ia->ia_iobase, SBP_NPORT, 0,
               &sc->sc_sbdsp.sc_ioh)) {
                   DPRINTF(("pas: can't map i/o space 0x%x/%d in probe\n",
                       ia->ia_iobase, SBP_NPORT));
                   return 0;
           }
   
           if (sbdsp_reset(&sc->sc_sbdsp) < 0) {
                   DPRINTF(("pas: couldn't reset card\n"));
                   goto unmap;
           }
   
           /*
            * Cannot auto-discover DMA channel.
            */
           if (!SB_DRQ_VALID(ia->ia_drq)) {
                   DPRINTF(("pas: configured dma chan %d invalid\n", ia->ia_drq));
                   goto unmap;
           }
           if (!SB_IRQ_VALID(ia->ia_irq)) {
                   DPRINTF(("pas: configured irq chan %d invalid\n", ia->ia_irq));
                   goto unmap;
           }
   
           sc->sc_sbdsp.sc_irq = ia->ia_irq;
           sc->sc_sbdsp.sc_drq8 = ia->ia_drq;
           sc->sc_sbdsp.sc_drq16 = -1; /* XXX */
           sc->sc_sbdsp.sc_ic = ia->ia_ic;
           
           if (sbdsp_probe(&sc->sc_sbdsp) == 0) {
                   DPRINTF(("pas: sbdsp probe failed\n"));
                   goto unmap;
           }
   
           ia->ia_iosize = SB_NPORT;
           return 1;
   
    unmap:
           bus_space_unmap(sc->sc_sbdsp.sc_iot, sc->sc_sbdsp.sc_ioh, SBP_NPORT);
           return 0;
   }
   
   /*
    * Attach hardware to driver, attach hardware driver to audio
    * pseudo-device driver .
    */
   void
   pasattach(struct device *parent, struct device *self, void *aux)
   {
           struct pas_softc *sc = (struct pas_softc *)self;
           struct isa_attach_args *ia = (struct isa_attach_args *)aux;
           int iobase = ia->ia_iobase;
           
           sc->sc_sbdsp.sc_isa = parent;
           sc->sc_sbdsp.sc_iobase = iobase;
           sc->sc_sbdsp.sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq,
               IST_EDGE, IPL_AUDIO | IPL_MPSAFE,
               sbdsp_intr, &sc->sc_sbdsp, sc->sc_sbdsp.sc_dev.dv_xname);
   
           printf(" ProAudio Spectrum %s [rev %d] ", pasnames[sc->model], sc->rev);
           
           sbdsp_attach(&sc->sc_sbdsp);
   
           audio_attach_mi(&pas_hw_if, &sc->sc_sbdsp, NULL, &sc->sc_sbdsp.sc_dev);
   }

Cache object: 431bad52411f3228e974c72a951a319f