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/eisa/uha_eisa.c

Version: -  FREEBSD  -  FREEBSD-13-STABLE  -  FREEBSD-13-0  -  FREEBSD-12-STABLE  -  FREEBSD-12-0  -  FREEBSD-11-STABLE  -  FREEBSD-11-0  -  FREEBSD-10-STABLE  -  FREEBSD-10-0  -  FREEBSD-9-STABLE  -  FREEBSD-9-0  -  FREEBSD-8-STABLE  -  FREEBSD-8-0  -  FREEBSD-7-STABLE  -  FREEBSD-7-0  -  FREEBSD-6-STABLE  -  FREEBSD-6-0  -  FREEBSD-5-STABLE  -  FREEBSD-5-0  -  FREEBSD-4-STABLE  -  FREEBSD-3-STABLE  -  FREEBSD22  -  l41  -  OPENBSD  -  linux-2.6  -  MK84  -  PLAN9  -  xnu-8792 
SearchContext: -  none  -  3  -  10 

    1 /*      $NetBSD: uha_eisa.c,v 1.21 2002/10/02 16:33:48 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 Charles M. Hannum.
    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: uha_eisa.c,v 1.21 2002/10/02 16:33:48 thorpej Exp $");
   41 
   42 #include "opt_ddb.h"
   43 
   44 #include <sys/param.h>
   45 #include <sys/systm.h>
   46 #include <sys/device.h>
   47 #include <sys/kernel.h>
   48 #include <sys/proc.h>
   49 #include <sys/user.h>
   50 
   51 #include <machine/bus.h>
   52 #include <machine/intr.h>
   53 
   54 #include <dev/scsipi/scsi_all.h>
   55 #include <dev/scsipi/scsipi_all.h>
   56 #include <dev/scsipi/scsiconf.h>
   57 
   58 #include <dev/eisa/eisavar.h>
   59 #include <dev/eisa/eisadevs.h>
   60 
   61 #include <dev/ic/uhareg.h>
   62 #include <dev/ic/uhavar.h>
   63 
   64 #define UHA_EISA_SLOT_OFFSET    0xc80
   65 #define UHA_EISA_IOSIZE         0x020
   66 
   67 int     uha_eisa_match __P((struct device *, struct cfdata *, void *));
   68 void    uha_eisa_attach __P((struct device *, struct device *, void *));
   69 
   70 CFATTACH_DECL(uha_eisa, sizeof(struct uha_softc),
   71     uha_eisa_match, uha_eisa_attach, NULL, NULL);
   72 
   73 #ifndef DDB
   74 #define Debugger() panic("should call debugger here (uha_eisa.c)")
   75 #endif /* ! DDB */
   76 
   77 int     u24_find __P((bus_space_tag_t, bus_space_handle_t,
   78             struct uha_probe_data *));
   79 void    u24_start_mbox __P((struct uha_softc *, struct uha_mscp *));
   80 int     u24_poll __P((struct uha_softc *, struct scsipi_xfer *, int));
   81 int     u24_intr __P((void *));
   82 void    u24_init __P((struct uha_softc *));
   83 
   84 /*
   85  * Check the slots looking for a board we recognise
   86  * If we find one, note it's address (slot) and call
   87  * the actual probe routine to check it out.
   88  */
   89 int
   90 uha_eisa_match(parent, match, aux)
   91         struct device *parent;
   92         struct cfdata *match;
   93         void *aux;
   94 {
   95         struct eisa_attach_args *ea = aux;
   96         bus_space_tag_t iot = ea->ea_iot;
   97         bus_space_handle_t ioh;
   98         int rv;
   99 
  100         /* must match one of our known ID strings */
  101         if (strncmp(ea->ea_idstring, "USC024", 6))
  102                 return (0);
  103 
  104         if (bus_space_map(iot, EISA_SLOT_ADDR(ea->ea_slot) +
  105             UHA_EISA_SLOT_OFFSET, UHA_EISA_IOSIZE, 0, &ioh))
  106                 return (0);
  107 
  108         rv = u24_find(iot, ioh, NULL);
  109 
  110         bus_space_unmap(iot, ioh, UHA_EISA_IOSIZE);
  111 
  112         return (rv);
  113 }
  114 
  115 /*
  116  * Attach all the sub-devices we can find
  117  */
  118 void
  119 uha_eisa_attach(parent, self, aux)
  120         struct device *parent, *self;
  121         void *aux;
  122 {
  123         struct eisa_attach_args *ea = aux;
  124         struct uha_softc *sc = (void *)self;
  125         bus_space_tag_t iot = ea->ea_iot;
  126         bus_dma_tag_t dmat = ea->ea_dmat;
  127         bus_space_handle_t ioh;
  128         struct uha_probe_data upd;
  129         eisa_chipset_tag_t ec = ea->ea_ec;
  130         eisa_intr_handle_t ih;
  131         const char *model, *intrstr;
  132 
  133         if (!strncmp(ea->ea_idstring, "USC024", 6))
  134                 model = EISA_PRODUCT_USC0240;
  135         else
  136                 model = "unknown model!";
  137         printf(": %s\n", model);
  138 
  139         if (bus_space_map(iot, EISA_SLOT_ADDR(ea->ea_slot) +
  140             UHA_EISA_SLOT_OFFSET, UHA_EISA_IOSIZE, 0, &ioh))
  141                 panic("uha_eisa_attach: could not map I/O addresses");
  142 
  143         sc->sc_iot = iot;
  144         sc->sc_ioh = ioh;
  145         sc->sc_dmat = dmat;
  146         if (!u24_find(iot, ioh, &upd))
  147                 panic("uha_eisa_attach: u24_find failed!");
  148 
  149         sc->sc_dmaflags = 0;
  150 
  151         if (eisa_intr_map(ec, upd.sc_irq, &ih)) {
  152                 printf("%s: couldn't map interrupt (%d)\n",
  153                     sc->sc_dev.dv_xname, upd.sc_irq);
  154                 return;
  155         }
  156         intrstr = eisa_intr_string(ec, ih);
  157         sc->sc_ih = eisa_intr_establish(ec, ih, IST_LEVEL, IPL_BIO,
  158             u24_intr, sc);
  159         if (sc->sc_ih == NULL) {
  160                 printf("%s: couldn't establish interrupt",
  161                     sc->sc_dev.dv_xname);
  162                 if (intrstr != NULL)
  163                         printf(" at %s", intrstr);
  164                 printf("\n");
  165                 return;
  166         }
  167         printf("%s: interrupting at %s\n", sc->sc_dev.dv_xname, intrstr);
  168 
  169         /* Save function pointers for later use. */
  170         sc->start_mbox = u24_start_mbox;
  171         sc->poll = u24_poll;
  172         sc->init = u24_init;
  173 
  174         uha_attach(sc, &upd);
  175 }
  176 
  177 int
  178 u24_find(iot, ioh, sc)
  179         bus_space_tag_t iot;
  180         bus_space_handle_t ioh;
  181         struct uha_probe_data *sc;
  182 {
  183         u_int8_t config0, config1, config2;
  184         int irq, drq;
  185         int resetcount = 4000;  /* 4 secs? */
  186 
  187         config0 = bus_space_read_1(iot, ioh, U24_CONFIG + 0);
  188         config1 = bus_space_read_1(iot, ioh, U24_CONFIG + 1);
  189         config2 = bus_space_read_1(iot, ioh, U24_CONFIG + 2);
  190         if ((config0 & U24_MAGIC1) == 0 ||
  191             (config1 & U24_MAGIC2) == 0)
  192                 return (0);
  193 
  194         drq = -1;
  195 
  196         switch (config0 & U24_IRQ_MASK) {
  197         case U24_IRQ10:
  198                 irq = 10;
  199                 break;
  200         case U24_IRQ11:
  201                 irq = 11;
  202                 break;
  203         case U24_IRQ14:
  204                 irq = 14;
  205                 break;
  206         case U24_IRQ15:
  207                 irq = 15;
  208                 break;
  209         default:
  210                 printf("u24_find: illegal irq setting %x\n",
  211                     config0 & U24_IRQ_MASK);
  212                 return (0);
  213         }
  214 
  215         bus_space_write_1(iot, ioh, U24_LINT, UHA_ASRST);
  216 
  217         while (--resetcount) {
  218                 if (bus_space_read_1(iot, ioh, U24_LINT))
  219                         break;
  220                 delay(1000);    /* 1 mSec per loop */
  221         }
  222         if (!resetcount) {
  223                 printf("u24_find: board timed out during reset\n");
  224                 return (0);
  225         }
  226 
  227         /* if we want to fill in softc, do so now */
  228         if (sc) {
  229                 sc->sc_irq = irq;
  230                 sc->sc_drq = drq;
  231                 sc->sc_scsi_dev = config2 & U24_HOSTID_MASK;
  232         }
  233 
  234         return (1);
  235 }
  236 
  237 void
  238 u24_start_mbox(sc, mscp)
  239         struct uha_softc *sc;
  240         struct uha_mscp *mscp;
  241 {
  242         bus_space_tag_t iot = sc->sc_iot;
  243         bus_space_handle_t ioh = sc->sc_ioh;
  244         int spincount = 100000; /* 1s should be enough */
  245 
  246         while (--spincount) {
  247                 if ((bus_space_read_1(iot, ioh, U24_LINT) & U24_LDIP) == 0)
  248                         break;
  249                 delay(100);
  250         }
  251         if (!spincount) {
  252                 printf("%s: uha_start_mbox, board not responding\n",
  253                     sc->sc_dev.dv_xname);
  254                 Debugger();
  255         }
  256 
  257         bus_space_write_4(iot, ioh, U24_OGMPTR,
  258             sc->sc_dmamap_mscp->dm_segs[0].ds_addr + UHA_MSCP_OFF(mscp));
  259         if (mscp->flags & MSCP_ABORT)
  260                 bus_space_write_1(iot, ioh, U24_OGMCMD, 0x80);
  261         else
  262                 bus_space_write_1(iot, ioh, U24_OGMCMD, 0x01);
  263         bus_space_write_1(iot, ioh, U24_LINT, U24_OGMFULL);
  264 
  265         if ((mscp->xs->xs_control & XS_CTL_POLL) == 0)
  266                 callout_reset(&mscp->xs->xs_callout,
  267                     mstohz(mscp->timeout), uha_timeout, mscp);
  268 }
  269 
  270 int
  271 u24_poll(sc, xs, count)
  272         struct uha_softc *sc;
  273         struct scsipi_xfer *xs;
  274         int count;
  275 {
  276         bus_space_tag_t iot = sc->sc_iot;
  277         bus_space_handle_t ioh = sc->sc_ioh;
  278 
  279         while (count) {
  280                 /*
  281                  * If we had interrupts enabled, would we
  282                  * have got an interrupt?
  283                  */
  284                 if (bus_space_read_1(iot, ioh, U24_SINT) & U24_SDIP)
  285                         u24_intr(sc);
  286                 if (xs->xs_status & XS_STS_DONE)
  287                         return (0);
  288                 delay(1000);
  289                 count--;
  290         }
  291         return (1);
  292 }
  293 
  294 int
  295 u24_intr(arg)
  296         void *arg;
  297 {
  298         struct uha_softc *sc = arg;
  299         bus_space_tag_t iot = sc->sc_iot;
  300         bus_space_handle_t ioh = sc->sc_ioh;
  301         struct uha_mscp *mscp;
  302         u_char uhastat;
  303         u_long mboxval;
  304 
  305 #ifdef  UHADEBUG
  306         printf("%s: uhaintr ", sc->sc_dev.dv_xname);
  307 #endif /*UHADEBUG */
  308 
  309         if ((bus_space_read_1(iot, ioh, U24_SINT) & U24_SDIP) == 0)
  310                 return (0);
  311 
  312         for (;;) {
  313                 /*
  314                  * First get all the information and then
  315                  * acknowledge the interrupt
  316                  */
  317                 uhastat = bus_space_read_1(iot, ioh, U24_SINT);
  318                 mboxval = bus_space_read_4(iot, ioh, U24_ICMPTR);
  319                 bus_space_write_1(iot, ioh, U24_SINT, U24_ICM_ACK);
  320                 bus_space_write_1(iot, ioh, U24_ICMCMD, 0);
  321 
  322 #ifdef  UHADEBUG
  323                 printf("status = 0x%x ", uhastat);
  324 #endif /*UHADEBUG*/
  325 
  326                 /*
  327                  * Process the completed operation
  328                  */
  329                 mscp = uha_mscp_phys_kv(sc, mboxval);
  330                 if (!mscp) {
  331                         printf("%s: BAD MSCP RETURNED!\n",
  332                             sc->sc_dev.dv_xname);
  333                         continue;       /* whatever it was, it'll timeout */
  334                 }
  335                 callout_stop(&mscp->xs->xs_callout);
  336                 uha_done(sc, mscp);
  337 
  338                 if ((bus_space_read_1(iot, ioh, U24_SINT) & U24_SDIP) == 0)
  339                         return (1);
  340         }
  341 }
  342 
  343 void
  344 u24_init(sc)
  345         struct uha_softc *sc;
  346 {
  347         bus_space_tag_t iot = sc->sc_iot;
  348         bus_space_handle_t ioh = sc->sc_ioh;
  349 
  350         /* free OGM and ICM */
  351         bus_space_write_1(iot, ioh, U24_OGMCMD, 0);
  352         bus_space_write_1(iot, ioh, U24_ICMCMD, 0);
  353         /* make sure interrupts are enabled */
  354 #ifdef UHADEBUG
  355         printf("u24_init: lmask=%02x, smask=%02x\n",
  356             bus_space_read_1(iot, ioh, U24_LMASK),
  357             bus_space_read_1(iot, ioh, U24_SMASK));
  358 #endif
  359         bus_space_write_1(iot, ioh, U24_LMASK, 0xd2);   /* XXX */
  360         bus_space_write_1(iot, ioh, U24_SMASK, 0x92);   /* XXX */
  361 }

Cache object: 7e740e01296081a9f7e2b74bdeb0e7cb


[ 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.