sys/arch/alpha/sableio/fdc_sableio.c

   1 /* $NetBSD: fdc_sableio.c,v 1.9 2008/04/28 20:23:12 martin Exp $ */
   2
   3 /*-
   4  * Copyright (c) 1999, 2000 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: fdc_sableio.c,v 1.9 2008/04/28 20:23:12 martin Exp $");
  35
  36 #include <sys/param.h>
  37 #include <sys/systm.h>
  38 #include <sys/callout.h>
  39 #include <sys/device.h>
  40 #include <sys/buf.h>
  41 #if NRND > 0
  42 #include <sys/rnd.h>
  43 #endif
  44
  45 #include <machine/bus.h>
  46 #include <machine/intr.h>
  47
  48 #include <dev/isa/isavar.h>
  49 #include <dev/isa/isadmavar.h>
  50
  51 #include <dev/isa/fdreg.h>
  52 #include <dev/isa/fdcvar.h>
  53
  54 #include <dev/pci/pcivar.h>
  55
  56 #include <alpha/sableio/sableiovar.h>
  57
  58 int     fdc_sableio_match(device_t, cfdata_t, void *);
  59 void    fdc_sableio_attach(device_t, device_t, void *);
  60
  61 struct fdc_sableio_softc {
  62         struct  fdc_softc sc_fdc;       /* real "fdc" softc */
  63
  64         bus_space_handle_t sc_baseioh;  /* base I/O handle */
  65 };
  66
  67 CFATTACH_DECL_NEW(fdc_sableio, sizeof(struct fdc_sableio_softc),
  68     fdc_sableio_match, fdc_sableio_attach, NULL, NULL);
  69
  70 int
  71 fdc_sableio_match(device_t parent, cfdata_t match, void *aux)
  72 {
  73         struct sableio_attach_args *sa = aux;
  74
  75         /* Always present. */
  76         if (strcmp(sa->sa_name, match->cf_name) == 0)
  77                 return (1);
  78
  79         return (0);
  80 }
  81
  82 void
  83 fdc_sableio_attach(device_t parent, device_t self, void *aux)
  84 {
  85         struct fdc_sableio_softc *sfdc = device_private(self);
  86         struct fdc_softc *fdc = &sfdc->sc_fdc;
  87         struct sableio_attach_args *sa = aux;
  88         const char *intrstr;
  89
  90         aprint_normal("\n");
  91
  92         fdc->sc_dev = self;
  93         fdc->sc_iot = sa->sa_iot;
  94         fdc->sc_ic = sa->sa_ic;
  95         fdc->sc_drq = sa->sa_drq;
  96
  97         if (bus_space_map(fdc->sc_iot, sa->sa_ioaddr, 6 /* FDC_NPORT */, 0,
  98             &sfdc->sc_baseioh)) {
  99                 aprint_error_dev(self, "unable to map I/O space\n");
 100                 return;
 101         }
 102
 103         if (bus_space_subregion(fdc->sc_iot, sfdc->sc_baseioh, 2, 4,
 104             &fdc->sc_ioh)) {
 105                 aprint_error_dev(self, "unable to subregion I/O space\n");
 106                 return;
 107         }
 108
 109         if (bus_space_map(fdc->sc_iot, sa->sa_ioaddr + fdctl + 2, 1, 0,
 110             &fdc->sc_fdctlioh)) {
 111                 aprint_error_dev(self, "unable to map CTL I/O space\n");
 112                 return;
 113         }
 114
 115         intrstr = pci_intr_string(sa->sa_pc, sa->sa_sableirq[0]);
 116         fdc->sc_ih = pci_intr_establish(sa->sa_pc, sa->sa_sableirq[0],
 117             IPL_BIO, fdcintr, fdc);
 118         if (fdc->sc_ih == NULL) {
 119                 aprint_error_dev(self, "unable to establish interrupt");
 120                 if (intrstr != NULL)
 121                         aprint_error(" at %s", intrstr);
 122                 aprint_error("\n");
 123                 return;
 124         }
 125         aprint_normal_dev(self, "interrupting at %s\n", intrstr);
 126
 127         fdcattach(fdc);
 128 }