The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]

FreeBSD/Linux Kernel Cross Reference
sys/dev/sound/isa/sbc.c

Version: -  FREEBSD  -  FREEBSD-12-STABLE  -  FREEBSD-12-0  -  FREEBSD-11-STABLE  -  FREEBSD-11-2  -  FREEBSD-11-1  -  FREEBSD-11-0  -  FREEBSD-10-STABLE  -  FREEBSD-10-4  -  FREEBSD-10-3  -  FREEBSD-10-2  -  FREEBSD-10-1  -  FREEBSD-10-0  -  FREEBSD-9-STABLE  -  FREEBSD-9-3  -  FREEBSD-9-2  -  FREEBSD-9-1  -  FREEBSD-9-0  -  FREEBSD-8-STABLE  -  FREEBSD-8-4  -  FREEBSD-8-3  -  FREEBSD-8-2  -  FREEBSD-8-1  -  FREEBSD-8-0  -  FREEBSD-7-STABLE  -  FREEBSD-7-4  -  FREEBSD-7-3  -  FREEBSD-7-2  -  FREEBSD-7-1  -  FREEBSD-7-0  -  FREEBSD-6-STABLE  -  FREEBSD-6-4  -  FREEBSD-6-3  -  FREEBSD-6-2  -  FREEBSD-6-1  -  FREEBSD-6-0  -  FREEBSD-5-STABLE  -  FREEBSD-5-5  -  FREEBSD-5-4  -  FREEBSD-5-3  -  FREEBSD-5-2  -  FREEBSD-5-1  -  FREEBSD-5-0  -  FREEBSD-4-STABLE  -  FREEBSD-3-STABLE  -  FREEBSD22  -  linux-2.6  -  linux-2.4.22  -  MK83  -  MK84  -  PLAN9  -  DFBSD  -  NETBSD  -  NETBSD5  -  NETBSD4  -  NETBSD3  -  NETBSD20  -  OPENBSD  -  xnu-517  -  xnu-792  -  xnu-792.6.70  -  xnu-1228  -  xnu-1456.1.26  -  xnu-1699.24.8  -  xnu-2050.18.24  -  OPENSOLARIS  -  minix-3-1-1 
SearchContext: -  none  -  3  -  10 

    1 /*-
    2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
    3  *
    4  * Copyright (c) 1999 Seigo Tanimura
    5  * All rights reserved.
    6  *
    7  * Redistribution and use in source and binary forms, with or without
    8  * modification, are permitted provided that the following conditions
    9  * are met:
   10  * 1. Redistributions of source code must retain the above copyright
   11  *    notice, this list of conditions and the following disclaimer.
   12  * 2. Redistributions in binary form must reproduce the above copyright
   13  *    notice, this list of conditions and the following disclaimer in the
   14  *    documentation and/or other materials provided with the distribution.
   15  *
   16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   26  * SUCH DAMAGE.
   27  */
   28 
   29 #ifdef HAVE_KERNEL_OPTION_HEADERS
   30 #include "opt_snd.h"
   31 #endif
   32 
   33 #include <dev/sound/chip.h>
   34 #include <dev/sound/pcm/sound.h>
   35 #include <dev/sound/isa/sb.h>
   36 
   37 #include <isa/isavar.h>
   38 
   39 SND_DECLARE_FILE("$FreeBSD: stable/12/sys/dev/sound/isa/sbc.c 328524 2018-01-29 00:22:30Z imp $");
   40 
   41 #define IO_MAX  3
   42 #define IRQ_MAX 1
   43 #define DRQ_MAX 2
   44 #define INTR_MAX        2
   45 
   46 struct sbc_softc;
   47 
   48 struct sbc_ihl {
   49         driver_intr_t *intr[INTR_MAX];
   50         void *intr_arg[INTR_MAX];
   51         struct sbc_softc *parent;
   52 };
   53 
   54 /* Here is the parameter structure per a device. */
   55 struct sbc_softc {
   56         device_t dev; /* device */
   57         device_t child_pcm, child_midi1, child_midi2;
   58 
   59         int io_rid[IO_MAX]; /* io port rids */
   60         struct resource *io[IO_MAX]; /* io port resources */
   61         int io_alloced[IO_MAX]; /* io port alloc flag */
   62 
   63         int irq_rid[IRQ_MAX]; /* irq rids */
   64         struct resource *irq[IRQ_MAX]; /* irq resources */
   65         int irq_alloced[IRQ_MAX]; /* irq alloc flag */
   66 
   67         int drq_rid[DRQ_MAX]; /* drq rids */
   68         struct resource *drq[DRQ_MAX]; /* drq resources */
   69         int drq_alloced[DRQ_MAX]; /* drq alloc flag */
   70 
   71         struct sbc_ihl ihl[IRQ_MAX];
   72 
   73         void *ih[IRQ_MAX];
   74 
   75         struct mtx *lock;
   76 
   77         u_int32_t bd_ver;
   78 };
   79 
   80 static int sbc_probe(device_t dev);
   81 static int sbc_attach(device_t dev);
   82 static void sbc_intr(void *p);
   83 
   84 static struct resource *sbc_alloc_resource(device_t bus, device_t child, int type, int *rid,
   85                                            rman_res_t start, rman_res_t end, rman_res_t count, u_int flags);
   86 static int sbc_release_resource(device_t bus, device_t child, int type, int rid,
   87                                 struct resource *r);
   88 static int sbc_setup_intr(device_t dev, device_t child, struct resource *irq,
   89                int flags,
   90                driver_filter_t *filter,
   91                driver_intr_t *intr, 
   92                void *arg, void **cookiep);
   93 static int sbc_teardown_intr(device_t dev, device_t child, struct resource *irq,
   94                   void *cookie);
   95 
   96 static int alloc_resource(struct sbc_softc *scp);
   97 static int release_resource(struct sbc_softc *scp);
   98 
   99 static devclass_t sbc_devclass;
  100 
  101 static int io_range[3] = {0x10, 0x2, 0x4};
  102 
  103 static int sb_rd(struct resource *io, int reg);
  104 static void sb_wr(struct resource *io, int reg, u_int8_t val);
  105 static int sb_dspready(struct resource *io);
  106 static int sb_cmd(struct resource *io, u_char val);
  107 static u_int sb_get_byte(struct resource *io);
  108 static void sb_setmixer(struct resource *io, u_int port, u_int value);
  109 
  110 static void
  111 sbc_lockinit(struct sbc_softc *scp)
  112 {
  113         scp->lock = snd_mtxcreate(device_get_nameunit(scp->dev),
  114             "snd_sbc softc");
  115 }
  116 
  117 static void
  118 sbc_lockdestroy(struct sbc_softc *scp)
  119 {
  120         snd_mtxfree(scp->lock);
  121 }
  122 
  123 void
  124 sbc_lock(struct sbc_softc *scp)
  125 {
  126         snd_mtxlock(scp->lock);
  127 }
  128 
  129 void
  130 sbc_lockassert(struct sbc_softc *scp)
  131 {
  132         snd_mtxassert(scp->lock);
  133 }
  134 
  135 void
  136 sbc_unlock(struct sbc_softc *scp)
  137 {
  138         snd_mtxunlock(scp->lock);
  139 }
  140 
  141 static int
  142 sb_rd(struct resource *io, int reg)
  143 {
  144         return bus_space_read_1(rman_get_bustag(io),
  145                                 rman_get_bushandle(io),
  146                                 reg);
  147 }
  148 
  149 static void
  150 sb_wr(struct resource *io, int reg, u_int8_t val)
  151 {
  152         bus_space_write_1(rman_get_bustag(io),
  153                           rman_get_bushandle(io),
  154                           reg, val);
  155 }
  156 
  157 static int
  158 sb_dspready(struct resource *io)
  159 {
  160         return ((sb_rd(io, SBDSP_STATUS) & 0x80) == 0);
  161 }
  162 
  163 static int
  164 sb_dspwr(struct resource *io, u_char val)
  165 {
  166         int  i;
  167 
  168         for (i = 0; i < 1000; i++) {
  169                 if (sb_dspready(io)) {
  170                         sb_wr(io, SBDSP_CMD, val);
  171                         return 1;
  172                 }
  173                 if (i > 10) DELAY((i > 100)? 1000 : 10);
  174         }
  175         printf("sb_dspwr(0x%02x) timed out.\n", val);
  176         return 0;
  177 }
  178 
  179 static int
  180 sb_cmd(struct resource *io, u_char val)
  181 {
  182         return sb_dspwr(io, val);
  183 }
  184 
  185 static void
  186 sb_setmixer(struct resource *io, u_int port, u_int value)
  187 {
  188         u_long   flags;
  189 
  190         flags = spltty();
  191         sb_wr(io, SB_MIX_ADDR, (u_char) (port & 0xff)); /* Select register */
  192         DELAY(10);
  193         sb_wr(io, SB_MIX_DATA, (u_char) (value & 0xff));
  194         DELAY(10);
  195         splx(flags);
  196 }
  197 
  198 static u_int
  199 sb_get_byte(struct resource *io)
  200 {
  201         int i;
  202 
  203         for (i = 1000; i > 0; i--) {
  204                 if (sb_rd(io, DSP_DATA_AVAIL) & 0x80)
  205                         return sb_rd(io, DSP_READ);
  206                 else
  207                         DELAY(20);
  208         }
  209         return 0xffff;
  210 }
  211 
  212 static int
  213 sb_reset_dsp(struct resource *io)
  214 {
  215         sb_wr(io, SBDSP_RST, 3);
  216         DELAY(100);
  217         sb_wr(io, SBDSP_RST, 0);
  218         return (sb_get_byte(io) == 0xAA)? 0 : ENXIO;
  219 }
  220 
  221 static int
  222 sb_identify_board(struct resource *io)
  223 {
  224         int ver, essver, rev;
  225 
  226         sb_cmd(io, DSP_CMD_GETVER);     /* Get version */
  227         ver = (sb_get_byte(io) << 8) | sb_get_byte(io);
  228         if (ver < 0x100 || ver > 0x4ff) return 0;
  229         if (ver == 0x0301) {
  230                 /* Try to detect ESS chips. */
  231                 sb_cmd(io, DSP_CMD_GETID); /* Return ident. bytes. */
  232                 essver = (sb_get_byte(io) << 8) | sb_get_byte(io);
  233                 rev = essver & 0x000f;
  234                 essver &= 0xfff0;
  235                 if (essver == 0x4880) ver |= 0x1000;
  236                 else if (essver == 0x6880) ver = 0x0500 | rev;
  237         }
  238         return ver;
  239 }
  240 
  241 static struct isa_pnp_id sbc_ids[] = {
  242         {0x01008c0e, "Creative ViBRA16C"},              /* CTL0001 */
  243         {0x31008c0e, "Creative SB16/SB32"},             /* CTL0031 */
  244         {0x41008c0e, "Creative SB16/SB32"},             /* CTL0041 */
  245         {0x42008c0e, "Creative SB AWE64"},              /* CTL0042 */
  246         {0x43008c0e, "Creative ViBRA16X"},              /* CTL0043 */
  247         {0x44008c0e, "Creative SB AWE64 Gold"},         /* CTL0044 */
  248         {0x45008c0e, "Creative SB AWE64"},              /* CTL0045 */
  249         {0x46008c0e, "Creative SB AWE64"},              /* CTL0046 */
  250 
  251         {0x01000000, "Avance Logic ALS100+"},           /* @@@0001 - ViBRA16X clone */
  252         {0x01100000, "Avance Asound 110"},              /* @@@1001 */
  253         {0x01200000, "Avance Logic ALS120"},            /* @@@2001 - ViBRA16X clone */
  254 
  255         {0x81167316, "ESS ES1681"},                     /* ESS1681 */
  256         {0x02017316, "ESS ES1688"},                     /* ESS1688 */
  257         {0x68097316, "ESS ES1688"},                     /* ESS1688 */
  258         {0x68187316, "ESS ES1868"},                     /* ESS1868 */
  259         {0x03007316, "ESS ES1869"},                     /* ESS1869 */
  260         {0x69187316, "ESS ES1869"},                     /* ESS1869 */
  261         {0xabb0110e, "ESS ES1869 (Compaq OEM)"},        /* CPQb0ab */
  262         {0xacb0110e, "ESS ES1869 (Compaq OEM)"},        /* CPQb0ac */
  263         {0x78187316, "ESS ES1878"},                     /* ESS1878 */
  264         {0x79187316, "ESS ES1879"},                     /* ESS1879 */
  265         {0x88187316, "ESS ES1888"},                     /* ESS1888 */
  266         {0x07017316, "ESS ES1888 (DEC OEM)"},           /* ESS0107 */
  267         {0x06017316, "ESS ES1888 (Dell OEM)"},          /* ESS0106 */
  268         {0}
  269 };
  270 
  271 static int
  272 sbc_probe(device_t dev)
  273 {
  274         char *s = NULL;
  275         u_int32_t lid, vid;
  276 
  277         lid = isa_get_logicalid(dev);
  278         vid = isa_get_vendorid(dev);
  279         if (lid) {
  280                 if (lid == 0x01000000 && vid != 0x01009305) /* ALS0001 */
  281                         return ENXIO;
  282                 /* Check pnp ids */
  283                 return ISA_PNP_PROBE(device_get_parent(dev), dev, sbc_ids);
  284         } else {
  285                 int rid = 0, ver;
  286                 struct resource *io;
  287 
  288                 io = bus_alloc_resource_anywhere(dev, SYS_RES_IOPORT, &rid,
  289                                                  16, RF_ACTIVE);
  290                 if (!io) goto bad;
  291                 if (sb_reset_dsp(io)) goto bad2;
  292                 ver = sb_identify_board(io);
  293                 if (ver == 0) goto bad2;
  294                 switch ((ver & 0x00000f00) >> 8) {
  295                 case 1:
  296                         device_set_desc(dev, "SoundBlaster 1.0 (not supported)");
  297                         s = NULL;
  298                         break;
  299 
  300                 case 2:
  301                         s = "SoundBlaster 2.0";
  302                         break;
  303 
  304                 case 3:
  305                         s = (ver & 0x0000f000)? "ESS 488" : "SoundBlaster Pro";
  306                         break;
  307 
  308                 case 4:
  309                         s = "SoundBlaster 16";
  310                         break;
  311 
  312                 case 5:
  313                         s = (ver & 0x00000008)? "ESS 688" : "ESS 1688";
  314                         break;
  315                 }
  316                 if (s) device_set_desc(dev, s);
  317 bad2:           bus_release_resource(dev, SYS_RES_IOPORT, rid, io);
  318 bad:            return s? 0 : ENXIO;
  319         }
  320 }
  321 
  322 static int
  323 sbc_attach(device_t dev)
  324 {
  325         char *err = NULL;
  326         struct sbc_softc *scp;
  327         struct sndcard_func *func;
  328         u_int32_t logical_id = isa_get_logicalid(dev);
  329         int flags = device_get_flags(dev);
  330         int f, dh, dl, x, irq, i;
  331 
  332         if (!logical_id && (flags & DV_F_DUAL_DMA)) {
  333                 bus_set_resource(dev, SYS_RES_DRQ, 1,
  334                                  flags & DV_F_DRQ_MASK, 1);
  335         }
  336 
  337         scp = device_get_softc(dev);
  338         bzero(scp, sizeof(*scp));
  339         scp->dev = dev;
  340         sbc_lockinit(scp);
  341         err = "alloc_resource";
  342         if (alloc_resource(scp)) goto bad;
  343 
  344         err = "sb_reset_dsp";
  345         if (sb_reset_dsp(scp->io[0])) goto bad;
  346         err = "sb_identify_board";
  347         scp->bd_ver = sb_identify_board(scp->io[0]) & 0x00000fff;
  348         if (scp->bd_ver == 0) goto bad;
  349         f = 0;
  350         if (logical_id == 0x01200000 && scp->bd_ver < 0x0400) scp->bd_ver = 0x0499;
  351         switch ((scp->bd_ver & 0x0f00) >> 8) {
  352         case 1: /* old sound blaster has nothing... */
  353                 break;
  354 
  355         case 2:
  356                 f |= BD_F_DUP_MIDI;
  357                 if (scp->bd_ver > 0x200) f |= BD_F_MIX_CT1335;
  358                 break;
  359 
  360         case 5:
  361                 f |= BD_F_ESS;
  362                 scp->bd_ver = 0x0301;
  363         case 3:
  364                 f |= BD_F_DUP_MIDI | BD_F_MIX_CT1345;
  365                 break;
  366 
  367         case 4:
  368                 f |= BD_F_SB16 | BD_F_MIX_CT1745;
  369                 if (scp->drq[0]) dl = rman_get_start(scp->drq[0]); else dl = -1;
  370                 if (scp->drq[1]) dh = rman_get_start(scp->drq[1]); else dh = dl;
  371                 if (!logical_id && (dh < dl)) {
  372                         struct resource *r;
  373                         r = scp->drq[0];
  374                         scp->drq[0] = scp->drq[1];
  375                         scp->drq[1] = r;
  376                         dl = rman_get_start(scp->drq[0]);
  377                         dh = rman_get_start(scp->drq[1]);
  378                 }
  379                 /* soft irq/dma configuration */
  380                 x = -1;
  381                 irq = rman_get_start(scp->irq[0]);
  382                 if      (irq == 5) x = 2;
  383                 else if (irq == 7) x = 4;
  384                 else if (irq == 9) x = 1;
  385                 else if (irq == 10) x = 8;
  386                 if (x == -1) {
  387                         err = "bad irq (5/7/9/10 valid)";
  388                         goto bad;
  389                 }
  390                 else sb_setmixer(scp->io[0], IRQ_NR, x);
  391                 sb_setmixer(scp->io[0], DMA_NR, (1 << dh) | (1 << dl));
  392                 if (bootverbose) {
  393                         device_printf(dev, "setting card to irq %d, drq %d", irq, dl);
  394                         if (dl != dh) printf(", %d", dh);
  395                         printf("\n");
  396                 }
  397                 break;
  398         }
  399 
  400         switch (logical_id) {
  401         case 0x43008c0e:        /* CTL0043 */
  402         case 0x01200000:
  403         case 0x01000000:
  404                 f |= BD_F_SB16X;
  405                 break;
  406         }
  407         scp->bd_ver |= f << 16;
  408 
  409         err = "setup_intr";
  410         for (i = 0; i < IRQ_MAX; i++) {
  411                 scp->ihl[i].parent = scp;
  412                 if (snd_setup_intr(dev, scp->irq[i], 0, sbc_intr, &scp->ihl[i], &scp->ih[i]))
  413                         goto bad;
  414         }
  415 
  416         /* PCM Audio */
  417         func = malloc(sizeof(struct sndcard_func), M_DEVBUF, M_NOWAIT | M_ZERO);
  418         if (func == NULL) goto bad;
  419         func->func = SCF_PCM;
  420         scp->child_pcm = device_add_child(dev, "pcm", -1);
  421         device_set_ivars(scp->child_pcm, func);
  422 
  423         /* Midi Interface */
  424         func = malloc(sizeof(struct sndcard_func), M_DEVBUF, M_NOWAIT | M_ZERO);
  425         if (func == NULL) goto bad;
  426         func->func = SCF_MIDI;
  427         scp->child_midi1 = device_add_child(dev, "midi", -1);
  428         device_set_ivars(scp->child_midi1, func);
  429 
  430         /* OPL FM Synthesizer */
  431         func = malloc(sizeof(struct sndcard_func), M_DEVBUF, M_NOWAIT | M_ZERO);
  432         if (func == NULL) goto bad;
  433         func->func = SCF_SYNTH;
  434         scp->child_midi2 = device_add_child(dev, "midi", -1);
  435         device_set_ivars(scp->child_midi2, func);
  436 
  437         /* probe/attach kids */
  438         bus_generic_attach(dev);
  439 
  440         return (0);
  441 
  442 bad:    if (err) device_printf(dev, "%s\n", err);
  443         release_resource(scp);
  444         return (ENXIO);
  445 }
  446 
  447 static int
  448 sbc_detach(device_t dev)
  449 {
  450         struct sbc_softc *scp = device_get_softc(dev);
  451 
  452         sbc_lock(scp);
  453         device_delete_child(dev, scp->child_midi2);
  454         device_delete_child(dev, scp->child_midi1);
  455         device_delete_child(dev, scp->child_pcm);
  456         release_resource(scp);
  457         sbc_lockdestroy(scp);
  458         return bus_generic_detach(dev);
  459 }
  460 
  461 static void
  462 sbc_intr(void *p)
  463 {
  464         struct sbc_ihl *ihl = p;
  465         int i;
  466 
  467         /* sbc_lock(ihl->parent); */
  468         i = 0;
  469         while (i < INTR_MAX) {
  470                 if (ihl->intr[i] != NULL) ihl->intr[i](ihl->intr_arg[i]);
  471                 i++;
  472         }
  473         /* sbc_unlock(ihl->parent); */
  474 }
  475 
  476 static int
  477 sbc_setup_intr(device_t dev, device_t child, struct resource *irq, int flags,
  478                driver_filter_t *filter,
  479                driver_intr_t *intr, 
  480                void *arg, void **cookiep)
  481 {
  482         struct sbc_softc *scp = device_get_softc(dev);
  483         struct sbc_ihl *ihl = NULL;
  484         int i, ret;
  485 
  486         if (filter != NULL) {
  487                 printf("sbc.c: we cannot use a filter here\n");
  488                 return (EINVAL);
  489         }
  490         sbc_lock(scp);
  491         i = 0;
  492         while (i < IRQ_MAX) {
  493                 if (irq == scp->irq[i]) ihl = &scp->ihl[i];
  494                 i++;
  495         }
  496         ret = 0;
  497         if (ihl == NULL) ret = EINVAL;
  498         i = 0;
  499         while ((ret == 0) && (i < INTR_MAX)) {
  500                 if (ihl->intr[i] == NULL) {
  501                         ihl->intr[i] = intr;
  502                         ihl->intr_arg[i] = arg;
  503                         *cookiep = &ihl->intr[i];
  504                         ret = -1;
  505                 } else i++;
  506         }
  507         sbc_unlock(scp);
  508         return (ret > 0)? EINVAL : 0;
  509 }
  510 
  511 static int
  512 sbc_teardown_intr(device_t dev, device_t child, struct resource *irq,
  513                   void *cookie)
  514 {
  515         struct sbc_softc *scp = device_get_softc(dev);
  516         struct sbc_ihl *ihl = NULL;
  517         int i, ret;
  518 
  519         sbc_lock(scp);
  520         i = 0;
  521         while (i < IRQ_MAX) {
  522                 if (irq == scp->irq[i]) ihl = &scp->ihl[i];
  523                 i++;
  524         }
  525         ret = 0;
  526         if (ihl == NULL) ret = EINVAL;
  527         i = 0;
  528         while ((ret == 0) && (i < INTR_MAX)) {
  529                 if (cookie == &ihl->intr[i]) {
  530                         ihl->intr[i] = NULL;
  531                         ihl->intr_arg[i] = NULL;
  532                         return 0;
  533                 } else i++;
  534         }
  535         sbc_unlock(scp);
  536         return (ret > 0)? EINVAL : 0;
  537 }
  538 
  539 static struct resource *
  540 sbc_alloc_resource(device_t bus, device_t child, int type, int *rid,
  541                    rman_res_t start, rman_res_t end, rman_res_t count, u_int flags)
  542 {
  543         struct sbc_softc *scp;
  544         int *alloced, rid_max, alloced_max;
  545         struct resource **res;
  546 
  547         scp = device_get_softc(bus);
  548         switch (type) {
  549         case SYS_RES_IOPORT:
  550                 alloced = scp->io_alloced;
  551                 res = scp->io;
  552                 rid_max = IO_MAX - 1;
  553                 alloced_max = 1;
  554                 break;
  555         case SYS_RES_DRQ:
  556                 alloced = scp->drq_alloced;
  557                 res = scp->drq;
  558                 rid_max = DRQ_MAX - 1;
  559                 alloced_max = 1;
  560                 break;
  561         case SYS_RES_IRQ:
  562                 alloced = scp->irq_alloced;
  563                 res = scp->irq;
  564                 rid_max = IRQ_MAX - 1;
  565                 alloced_max = INTR_MAX; /* pcm and mpu may share the irq. */
  566                 break;
  567         default:
  568                 return (NULL);
  569         }
  570 
  571         if (*rid > rid_max || alloced[*rid] == alloced_max)
  572                 return (NULL);
  573 
  574         alloced[*rid]++;
  575         return (res[*rid]);
  576 }
  577 
  578 static int
  579 sbc_release_resource(device_t bus, device_t child, int type, int rid,
  580                         struct resource *r)
  581 {
  582         struct sbc_softc *scp;
  583         int *alloced, rid_max;
  584 
  585         scp = device_get_softc(bus);
  586         switch (type) {
  587         case SYS_RES_IOPORT:
  588                 alloced = scp->io_alloced;
  589                 rid_max = IO_MAX - 1;
  590                 break;
  591         case SYS_RES_DRQ:
  592                 alloced = scp->drq_alloced;
  593                 rid_max = DRQ_MAX - 1;
  594                 break;
  595         case SYS_RES_IRQ:
  596                 alloced = scp->irq_alloced;
  597                 rid_max = IRQ_MAX - 1;
  598                 break;
  599         default:
  600                 return (1);
  601         }
  602 
  603         if (rid > rid_max || alloced[rid] == 0)
  604                 return (1);
  605 
  606         alloced[rid]--;
  607         return (0);
  608 }
  609 
  610 static int
  611 sbc_read_ivar(device_t bus, device_t dev, int index, uintptr_t * result)
  612 {
  613         struct sbc_softc *scp = device_get_softc(bus);
  614         struct sndcard_func *func = device_get_ivars(dev);
  615 
  616         switch (index) {
  617         case 0:
  618                 *result = func->func;
  619                 break;
  620 
  621         case 1:
  622                 *result = scp->bd_ver;
  623                 break;
  624 
  625         default:
  626                 return ENOENT;
  627         }
  628 
  629         return 0;
  630 }
  631 
  632 static int
  633 sbc_write_ivar(device_t bus, device_t dev,
  634                int index, uintptr_t value)
  635 {
  636         switch (index) {
  637         case 0:
  638         case 1:
  639                 return EINVAL;
  640 
  641         default:
  642                 return (ENOENT);
  643         }
  644 }
  645 
  646 static int
  647 alloc_resource(struct sbc_softc *scp)
  648 {
  649         int i;
  650 
  651         for (i = 0 ; i < IO_MAX ; i++) {
  652                 if (scp->io[i] == NULL) {
  653                         scp->io_rid[i] = i;
  654                         scp->io[i] = bus_alloc_resource_anywhere(scp->dev,
  655                                                                  SYS_RES_IOPORT,
  656                                                                  &scp->io_rid[i],
  657                                                                 io_range[i],
  658                                                                 RF_ACTIVE);
  659                         if (i == 0 && scp->io[i] == NULL)
  660                                 return (1);
  661                         scp->io_alloced[i] = 0;
  662                 }
  663         }
  664         for (i = 0 ; i < DRQ_MAX ; i++) {
  665                 if (scp->drq[i] == NULL) {
  666                         scp->drq_rid[i] = i;
  667                         scp->drq[i] = bus_alloc_resource_any(scp->dev,
  668                                                              SYS_RES_DRQ,
  669                                                              &scp->drq_rid[i],
  670                                                              RF_ACTIVE);
  671                         if (i == 0 && scp->drq[i] == NULL)
  672                                 return (1);
  673                         scp->drq_alloced[i] = 0;
  674                 }
  675         }
  676         for (i = 0 ; i < IRQ_MAX ; i++) {
  677                 if (scp->irq[i] == NULL) {
  678                         scp->irq_rid[i] = i;
  679                         scp->irq[i] = bus_alloc_resource_any(scp->dev,
  680                                                              SYS_RES_IRQ,
  681                                                              &scp->irq_rid[i],
  682                                                              RF_ACTIVE);
  683                         if (i == 0 && scp->irq[i] == NULL)
  684                                 return (1);
  685                         scp->irq_alloced[i] = 0;
  686                 }
  687         }
  688         return (0);
  689 }
  690 
  691 static int
  692 release_resource(struct sbc_softc *scp)
  693 {
  694         int i;
  695 
  696         for (i = 0 ; i < IO_MAX ; i++) {
  697                 if (scp->io[i] != NULL) {
  698                         bus_release_resource(scp->dev, SYS_RES_IOPORT, scp->io_rid[i], scp->io[i]);
  699                         scp->io[i] = NULL;
  700                 }
  701         }
  702         for (i = 0 ; i < DRQ_MAX ; i++) {
  703                 if (scp->drq[i] != NULL) {
  704                         bus_release_resource(scp->dev, SYS_RES_DRQ, scp->drq_rid[i], scp->drq[i]);
  705                         scp->drq[i] = NULL;
  706                 }
  707         }
  708         for (i = 0 ; i < IRQ_MAX ; i++) {
  709                 if (scp->irq[i] != NULL) {
  710                         if (scp->ih[i] != NULL)
  711                                 bus_teardown_intr(scp->dev, scp->irq[i], scp->ih[i]);
  712                         scp->ih[i] = NULL;
  713                         bus_release_resource(scp->dev, SYS_RES_IRQ, scp->irq_rid[i], scp->irq[i]);
  714                         scp->irq[i] = NULL;
  715                 }
  716         }
  717         return (0);
  718 }
  719 
  720 static device_method_t sbc_methods[] = {
  721         /* Device interface */
  722         DEVMETHOD(device_probe,         sbc_probe),
  723         DEVMETHOD(device_attach,        sbc_attach),
  724         DEVMETHOD(device_detach,        sbc_detach),
  725         DEVMETHOD(device_shutdown,      bus_generic_shutdown),
  726         DEVMETHOD(device_suspend,       bus_generic_suspend),
  727         DEVMETHOD(device_resume,        bus_generic_resume),
  728 
  729         /* Bus interface */
  730         DEVMETHOD(bus_read_ivar,        sbc_read_ivar),
  731         DEVMETHOD(bus_write_ivar,       sbc_write_ivar),
  732         DEVMETHOD(bus_alloc_resource,   sbc_alloc_resource),
  733         DEVMETHOD(bus_release_resource, sbc_release_resource),
  734         DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
  735         DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
  736         DEVMETHOD(bus_setup_intr,       sbc_setup_intr),
  737         DEVMETHOD(bus_teardown_intr,    sbc_teardown_intr),
  738 
  739         DEVMETHOD_END
  740 };
  741 
  742 static driver_t sbc_driver = {
  743         "sbc",
  744         sbc_methods,
  745         sizeof(struct sbc_softc),
  746 };
  747 
  748 /* sbc can be attached to an isa bus. */
  749 DRIVER_MODULE(snd_sbc, isa, sbc_driver, sbc_devclass, 0, 0);
  750 DRIVER_MODULE(snd_sbc, acpi, sbc_driver, sbc_devclass, 0, 0);
  751 MODULE_DEPEND(snd_sbc, sound, SOUND_MINVER, SOUND_PREFVER, SOUND_MAXVER);
  752 MODULE_VERSION(snd_sbc, 1);
  753 ISA_PNP_INFO(sbc_ids);

Cache object: 6ccfe7608d3728086e56c3c5e13dead4


[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]


This page is part of the FreeBSD/Linux Linux Kernel Cross-Reference, and was automatically generated using a modified version of the LXR engine.