fdc_pcmcia.c

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    1 /*      $NetBSD: fdc_pcmcia.c,v 1.10 2002/10/02 16:52:07 thorpej Exp $  */
    2 
    3 /*-
    4  * Copyright (c) 1998 The NetBSD Foundation, Inc.
    5  * All rights reserved.
    6  *
    7  * This code is derived from software contributed to The NetBSD Foundation
    8  * by Christos Zoulas.
    9  *
   10  * Redistribution and use in source and binary forms, with or without
   11  * modification, are permitted provided that the following conditions
   12  * are met:
   13  * 1. Redistributions of source code must retain the above copyright
   14  *    notice, this list of conditions and the following disclaimer.
   15  * 2. Redistributions in binary form must reproduce the above copyright
   16  *    notice, this list of conditions and the following disclaimer in the
   17  *    documentation and/or other materials provided with the distribution.
   18  * 3. All advertising materials mentioning features or use of this software
   19  *    must display the following acknowledgement:
   20  *        This product includes software developed by the NetBSD
   21  *        Foundation, Inc. and its contributors.
   22  * 4. Neither the name of The NetBSD Foundation nor the names of its
   23  *    contributors may be used to endorse or promote products derived
   24  *    from this software without specific prior written permission.
   25  *
   26  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
   27  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
   28  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   29  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
   30  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   31  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   32  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   33  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   34  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   35  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   36  * POSSIBILITY OF SUCH DAMAGE.
   37  */
   38 
   39 #include <sys/cdefs.h>
   40 __KERNEL_RCSID(0, "$NetBSD: fdc_pcmcia.c,v 1.10 2002/10/02 16:52:07 thorpej Exp $");
   41 
   42 #include <sys/param.h>
   43 #include <sys/systm.h>
   44 #include <sys/conf.h>
   45 #include <sys/device.h>
   46 #include <sys/disk.h>
   47 #include <sys/buf.h>
   48 
   49 #include <machine/bus.h>
   50 #include <machine/intr.h>
   51 
   52 #include <dev/pcmcia/pcmciareg.h>
   53 #include <dev/pcmcia/pcmciavar.h>
   54 #include <dev/pcmcia/pcmciadevs.h>
   55 
   56 #include <dev/ic/fdcreg.h>
   57 #include <dev/ic/fdcvar.h>
   58 
   59 struct fdc_pcmcia_softc {
   60         struct fdc_softc sc_fdc;                /* real "fdc" softc */
   61 
   62         /* PCMCIA-specific goo. */
   63         struct pcmcia_io_handle sc_pcioh;       /* PCMCIA i/o space info */
   64         int sc_io_window;                       /* our i/o window */
   65         struct pcmcia_function *sc_pf;          /* our PCMCIA function */
   66 };
   67 
   68 int fdc_pcmcia_probe __P((struct device *, struct cfdata *, void *));
   69 void fdc_pcmcia_attach __P((struct device *, struct device *, void *));
   70 static void fdc_conf __P((struct fdc_softc *));
   71 
   72 CFATTACH_DECL(fdc_pcmcia, sizeof(struct fdc_pcmcia_softc),
   73     fdc_pcmcia_probe, fdc_pcmcia_attach, NULL, NULL);
   74 
   75 static void
   76 fdc_conf(fdc)
   77         struct fdc_softc *fdc;
   78 {
   79         bus_space_tag_t iot = fdc->sc_iot;
   80         bus_space_handle_t ioh = fdc->sc_ioh;
   81         int n;
   82 
   83         /* Figure out what we have */
   84         if (out_fdc_cmd(iot, ioh, FDC_CMD_VERSION) == -1 || 
   85             (n = fdcresult(fdc, 1)) != 1)
   86                 return;
   87 
   88         /* Nec765 or equivalent */
   89         if (FDC_ST0(fdc->sc_status[0]) == FDC_ST0_INVL)
   90                 return;
   91 
   92 #if 0
   93         /* ns8477 check */
   94         if (out_fdc_cmd(iot, ioh, FDC_CMD_NSC) == -1 || 
   95             (n = fdcresult(fdc, 1)) != 1) {
   96                 printf("NSC command failed\n");
   97                 return;
   98         }
   99         else
  100                 printf("Version %x\n", fdc->sc_status[0]);
  101 #endif
  102 
  103         if (out_fdc_cmd(iot, ioh, FDC_CMD_DUMPREG) == -1 || 
  104             (n = fdcresult(fdc, -1)) == -1)
  105                 return;
  106 
  107         /*
  108          * Expect 10 bytes of status; one means that it did not
  109          * understand the command
  110          */
  111         if (n == 1)
  112                 return;
  113 
  114         /*
  115          * Configure controller to use FIFO and 8 bytes of FIFO threshold
  116          */
  117         (void)out_fdc_cmd(iot, ioh, FDC_CMD_CONFIGURE);
  118         (void)out_fdc(iot, ioh, 0x00);  /* doc says 0 */
  119         (void)out_fdc(iot, ioh, 8);     /* FIFO is active low. */
  120         (void)out_fdc(iot, ioh, fdc->sc_status[9]); /* same comp */
  121         /* No result phase */
  122 
  123         /* Lock this configuration */
  124         if (out_fdc_cmd(iot, ioh, FDC_CMD_LOCK(FDC_CMD_FLAGS_LOCK)) == -1 ||
  125             fdcresult(fdc, 1) != 1)
  126                 return;
  127 }
  128 
  129 int
  130 fdc_pcmcia_probe(parent, match, aux)
  131         struct device *parent;
  132         struct cfdata *match;
  133         void *aux;
  134 {
  135         struct pcmcia_attach_args *pa = aux;
  136         struct pcmcia_card *card = pa->card;
  137         char *cis[4] = PCMCIA_CIS_YEDATA_EXTERNAL_FDD;
  138 
  139         /* For this card the manufacturer and product are -1 */
  140         if (strcmp(cis[0], card->cis1_info[0]) == 0 &&
  141             strcmp(cis[1], card->cis1_info[1]) == 0)
  142                 return 1;
  143 
  144         return 0;
  145 }
  146 
  147 
  148 void
  149 fdc_pcmcia_attach(parent, self, aux)
  150         struct device *parent, *self;
  151         void *aux;
  152 {
  153         struct fdc_pcmcia_softc *psc = (void *)self;
  154         struct fdc_softc *fdc = &psc->sc_fdc;
  155         struct pcmcia_attach_args *pa = aux;
  156         struct pcmcia_config_entry *cfe;
  157         struct pcmcia_function *pf = pa->pf;
  158         struct fdc_attach_args fa;
  159 
  160         psc->sc_pf = pf;
  161 
  162         SIMPLEQ_FOREACH(cfe, &pf->cfe_head, cfe_list) {
  163                 if (cfe->num_memspace != 0 ||
  164                     cfe->num_iospace != 1)
  165                         continue;
  166 
  167                 if (pcmcia_io_alloc(pa->pf, cfe->iospace[0].start,
  168                     cfe->iospace[0].length, cfe->iospace[0].length,
  169                     &psc->sc_pcioh) == 0)
  170                         break;
  171         }
  172 
  173         if (cfe == 0) {
  174                 printf(": can't alloc i/o space\n");
  175                 return;
  176         }
  177 
  178         /* Enable the card. */
  179         pcmcia_function_init(pf, cfe);
  180         if (pcmcia_function_enable(pf)) {
  181                 printf(": function enable failed\n");
  182                 return;
  183         }
  184 
  185         /* Map in the io space */
  186         if (pcmcia_io_map(pa->pf, PCMCIA_WIDTH_AUTO, 0, psc->sc_pcioh.size,
  187             &psc->sc_pcioh, &psc->sc_io_window)) {
  188                 printf(": can't map i/o space\n");
  189                 return;
  190         }
  191 
  192         fdc->sc_iot = psc->sc_pcioh.iot;
  193         fdc->sc_ioh = psc->sc_pcioh.ioh;
  194 
  195         fdc->sc_flags = FDC_HEADSETTLE;
  196         fdc->sc_state = DEVIDLE;
  197         TAILQ_INIT(&fdc->sc_drives);
  198 
  199         if (!fdcfind(fdc->sc_iot, fdc->sc_ioh, 1))
  200                 printf(": coundn't find fdc\n%s", fdc->sc_dev.dv_xname);
  201 
  202         printf(": %s\n", PCMCIA_STR_YEDATA_EXTERNAL_FDD);
  203 
  204         fdc_conf(fdc);
  205 
  206         /* Establish the interrupt handler. */
  207         fdc->sc_ih = pcmcia_intr_establish(pa->pf, IPL_BIO, fdchwintr, fdc);
  208         if (fdc->sc_ih == NULL)
  209                 printf("%s: couldn't establish interrupt\n",
  210                     fdc->sc_dev.dv_xname);
  211 
  212         /* physical limit: four drives per controller. */
  213         for (fa.fa_drive = 0; fa.fa_drive < 4; fa.fa_drive++) {
  214                 if (fa.fa_drive < 2)
  215                         fa.fa_deftype = &fd_types[0];
  216                 else
  217                         fa.fa_deftype = NULL;           /* unknown */
  218                 (void)config_found(self, (void *)&fa, fdprint);
  219         }
  220 }

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FreeBSD/Linux Kernel Cross Reference sys/dev/pcmcia/fdc_pcmcia.c

FreeBSD/Linux Kernel Cross Reference
sys/dev/pcmcia/fdc_pcmcia.c