sys/arch/alpha/sableio/lpt_sableio.c

   1 /* $NetBSD: lpt_sableio.c,v 1.6 2008/04/28 20:23:12 martin Exp $ */
   2
   3 /*-
   4  * Copyright (c) 1999 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Jason R. Thorpe.
   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  *
  19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  29  * POSSIBILITY OF SUCH DAMAGE.
  30  */
  31
  32 #include <sys/cdefs.h>                  /* RCS ID & Copyright macro defns */
  33
  34 __KERNEL_RCSID(0, "$NetBSD: lpt_sableio.c,v 1.6 2008/04/28 20:23:12 martin Exp $");
  35
  36 #include <sys/param.h>
  37 #include <sys/systm.h>
  38 #include <sys/ioctl.h>
  39 #include <sys/select.h>
  40 #include <sys/tty.h>
  41 #include <sys/proc.h>
  42 #include <sys/conf.h>
  43 #include <sys/file.h>
  44 #include <sys/uio.h>
  45 #include <sys/kernel.h>
  46 #include <sys/syslog.h>
  47 #include <sys/types.h>
  48 #include <sys/device.h>
  49
  50 #include <machine/intr.h>
  51 #include <machine/bus.h>
  52
  53 #include <dev/ic/lptreg.h>
  54 #include <dev/ic/lptvar.h>
  55
  56 #include <dev/pci/pcivar.h>
  57 #include <dev/isa/isavar.h>
  58
  59 #include <alpha/sableio/sableiovar.h>
  60
  61 struct lpt_sableio_softc {
  62         struct lpt_softc sc_lpt;        /* real "lpt" softc */
  63
  64         /* STDIO-specific goo. */
  65         void    *sc_ih;                 /* interrupt handler */
  66 };
  67
  68 int     lpt_sableio_match(device_t, cfdata_t , void *);
  69 void    lpt_sableio_attach(device_t, device_t, void *);
  70
  71 CFATTACH_DECL_NEW(lpt_sableio, sizeof(struct lpt_sableio_softc),
  72     lpt_sableio_match, lpt_sableio_attach, NULL, NULL);
  73
  74 int
  75 lpt_sableio_match(device_t parent, cfdata_t match, void *aux)
  76 {
  77         struct sableio_attach_args *sa = aux;
  78
  79         /* Always present. */
  80         if (strcmp(sa->sa_name, match->cf_name) == 0)
  81                 return (1);
  82
  83         return (0);
  84 }
  85
  86 void
  87 lpt_sableio_attach(device_t parent, device_t self, void *aux)
  88 {
  89         struct lpt_sableio_softc *ssc = device_private(self);
  90         struct lpt_softc *sc = &ssc->sc_lpt;
  91         struct sableio_attach_args *sa = aux;
  92         const char *intrstr;
  93
  94         sc->sc_dev = self;
  95         sc->sc_iot = sa->sa_iot;
  96
  97         if (bus_space_map(sc->sc_iot, sa->sa_ioaddr, LPT_NPORTS, 0,
  98             &sc->sc_ioh) != 0) {
  99                 aprint_error(": can't map i/o space\n");
 100                 return;
 101         }
 102
 103         aprint_normal("\n");
 104         aprint_naive("\n");
 105
 106         lpt_attach_subr(sc);
 107
 108         intrstr = pci_intr_string(sa->sa_pc, sa->sa_sableirq[0]);
 109         ssc->sc_ih = pci_intr_establish(sa->sa_pc, sa->sa_sableirq[0],
 110             IPL_TTY, lptintr, sc);
 111         if (ssc->sc_ih == NULL) {
 112                 aprint_error_dev(self, "unable to establish interrupt");
 113                 if (intrstr != NULL)
 114                         aprint_error(" at %s", intrstr);
 115                 aprint_error("\n");
 116                 return;
 117         }
 118         aprint_normal_dev(self, "interrupting at %s\n", intrstr);
 119 }