sys/arch/sparc64/dev/lpt_ebus.c

   1 /*      $NetBSD: lpt_ebus.c,v 1.21 2008/03/07 17:15:51 cube Exp $       */
   2
   3 /*
   4  * Copyright (c) 1999, 2000 Matthew R. Green
   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 ``AS IS'' AND ANY EXPRESS OR
  17  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  18  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  19  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
  21  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  22  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  23  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  24  * 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 /*
  30  * NS Super I/O PC87332VLJ "lpt" to ebus attachment
  31  */
  32
  33 #include <sys/cdefs.h>
  34 __KERNEL_RCSID(0, "$NetBSD: lpt_ebus.c,v 1.21 2008/03/07 17:15:51 cube Exp $");
  35
  36 #include <sys/types.h>
  37 #include <sys/param.h>
  38 #include <sys/systm.h>
  39 #include <sys/device.h>
  40 #include <sys/tty.h>
  41
  42 #include <machine/bus.h>
  43
  44 #include <dev/ebus/ebusreg.h>
  45 #include <dev/ebus/ebusvar.h>
  46
  47 #include <dev/ic/lptvar.h>
  48
  49 int     lpt_ebus_match(device_t, cfdata_t , void *);
  50 void    lpt_ebus_attach(device_t, device_t, void *);
  51
  52 CFATTACH_DECL_NEW(lpt_ebus, sizeof(struct lpt_softc),
  53     lpt_ebus_match, lpt_ebus_attach, NULL, NULL);
  54
  55 #define ROM_LPT_NAME    "ecpp"
  56
  57 int
  58 lpt_ebus_match(device_t parent, cfdata_t match, void *aux)
  59 {
  60         struct ebus_attach_args *ea = aux;
  61
  62         if (strcmp(ea->ea_name, ROM_LPT_NAME) == 0)
  63                 return (1);
  64
  65         return (0);
  66 }
  67
  68 void
  69 lpt_ebus_attach(device_t parent, device_t self, void *aux)
  70 {
  71         struct lpt_softc *sc = device_private(self);
  72         struct ebus_attach_args *ea = aux;
  73         int i;
  74
  75         sc->sc_dev = self;
  76         sc->sc_iot = ea->ea_bustag;
  77         /*
  78          * Addresses that should be supplied by the prom:
  79          *      - normal lpt registers
  80          *      - ns873xx configuration registers
  81          *      - DMA space
  82          * The `lpt' driver does not use DMA accesses, so we can
  83          * ignore that for now.  We should enable the lpt port in
  84          * the ns873xx registers here. XXX
  85          *
  86          * Use the prom address if there.
  87          */
  88         if (ea->ea_nvaddr)
  89                 sparc_promaddr_to_handle(sc->sc_iot, ea->ea_vaddr[0],
  90                         &sc->sc_ioh);
  91         else if (bus_space_map(sc->sc_iot,
  92                               EBUS_ADDR_FROM_REG(&ea->ea_reg[0]),
  93                               ea->ea_reg[0].size,
  94                               0,
  95                               &sc->sc_ioh) != 0) {
  96                 aprint_error(": can't map register space\n");
  97                 return;
  98         }
  99
 100         for (i = 0; i < ea->ea_nintr; i++)
 101                 bus_intr_establish(ea->ea_bustag, ea->ea_intr[i],
 102                                    IPL_SERIAL, lptintr, sc);
 103         aprint_normal("\n");
 104
 105         lpt_attach_subr(sc);
 106 }