sys/dev/isa/aha_isa.c

   1 /*      $NetBSD: aha_isa.c,v 1.28 2009/09/21 08:12:47 tsutsui 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  *
  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>
  33 __KERNEL_RCSID(0, "$NetBSD: aha_isa.c,v 1.28 2009/09/21 08:12:47 tsutsui Exp $");
  34
  35 #include <sys/param.h>
  36 #include <sys/systm.h>
  37 #include <sys/device.h>
  38
  39 #include <sys/bus.h>
  40 #include <sys/intr.h>
  41
  42 #include <dev/scsipi/scsi_all.h>
  43 #include <dev/scsipi/scsipi_all.h>
  44 #include <dev/scsipi/scsiconf.h>
  45
  46 #include <dev/isa/isavar.h>
  47 #include <dev/isa/isadmavar.h>
  48
  49 #include <dev/ic/ahareg.h>
  50 #include <dev/ic/ahavar.h>
  51
  52 #define AHA_ISA_IOSIZE  4
  53
  54 static int      aha_isa_probe(device_t, cfdata_t, void *);
  55 static void     aha_isa_attach(device_t, device_t, void *);
  56
  57 CFATTACH_DECL_NEW(aha_isa, sizeof(struct aha_softc),
  58     aha_isa_probe, aha_isa_attach, NULL, NULL);
  59
  60 /*
  61  * Check the slots looking for a board we recognise
  62  * If we find one, note it's address (slot) and call
  63  * the actual probe routine to check it out.
  64  */
  65 int
  66 aha_isa_probe(device_t parent, cfdata_t match, void *aux)
  67 {
  68         struct isa_attach_args *ia = aux;
  69         bus_space_tag_t iot = ia->ia_iot;
  70         bus_space_handle_t ioh;
  71         struct aha_probe_data apd;
  72         int rv;
  73
  74         if (ia->ia_nio < 1)
  75                 return (0);
  76         if (ia->ia_nirq < 1)
  77                 return (0);
  78         if (ia->ia_ndrq < 1)
  79                 return (0);
  80
  81         if (ISA_DIRECT_CONFIG(ia))
  82                 return (0);
  83
  84         /* Disallow wildcarded i/o address. */
  85         if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT)
  86                 return (0);
  87
  88         if (bus_space_map(iot, ia->ia_io[0].ir_addr, AHA_ISA_IOSIZE, 0, &ioh))
  89                 return (0);
  90
  91         rv = aha_find(iot, ioh, &apd);
  92
  93         bus_space_unmap(iot, ioh, AHA_ISA_IOSIZE);
  94
  95         if (rv) {
  96                 if (ia->ia_irq[0].ir_irq != ISA_UNKNOWN_IRQ &&
  97                     ia->ia_irq[0].ir_irq != apd.sc_irq)
  98                         return (0);
  99                 if (ia->ia_drq[0].ir_drq != ISA_UNKNOWN_DRQ &&
 100                     ia->ia_drq[0].ir_drq != apd.sc_drq)
 101                         return (0);
 102
 103                 ia->ia_nio = 1;
 104                 ia->ia_io[0].ir_size = AHA_ISA_IOSIZE;
 105
 106                 ia->ia_nirq = 1;
 107                 ia->ia_irq[0].ir_irq = apd.sc_irq;
 108
 109                 ia->ia_ndrq = 1;
 110                 ia->ia_drq[0].ir_drq = apd.sc_drq;
 111
 112                 ia->ia_niomem = 0;
 113         }
 114         return (rv);
 115 }
 116
 117 /*
 118  * Attach all the sub-devices we can find
 119  */
 120 void
 121 aha_isa_attach(device_t parent, device_t self, void *aux)
 122 {
 123         struct isa_attach_args *ia = aux;
 124         struct aha_softc *sc = device_private(self);
 125         bus_space_tag_t iot = ia->ia_iot;
 126         bus_space_handle_t ioh;
 127         struct aha_probe_data apd;
 128         isa_chipset_tag_t ic = ia->ia_ic;
 129         int error;
 130
 131         sc->sc_dev = self;
 132
 133         printf("\n");
 134
 135         if (bus_space_map(iot, ia->ia_io[0].ir_addr, AHA_ISA_IOSIZE, 0, &ioh)) {
 136                 aprint_error_dev(self, "can't map i/o space\n");
 137                 return;
 138         }
 139
 140         sc->sc_iot = iot;
 141         sc->sc_ioh = ioh;
 142         sc->sc_dmat = ia->ia_dmat;
 143         if (!aha_find(iot, ioh, &apd)) {
 144                 aprint_error_dev(self, "aha_find failed\n");
 145                 return;
 146         }
 147
 148         if (apd.sc_drq != -1) {
 149                 if ((error = isa_dmacascade(ic, apd.sc_drq)) != 0) {
 150                         aprint_error_dev(self,
 151                             "unable to cascade DRQ, error = %d\n", error);
 152                         return;
 153                 }
 154         }
 155
 156         sc->sc_ih = isa_intr_establish(ic, apd.sc_irq, IST_EDGE, IPL_BIO,
 157             aha_intr, sc);
 158         if (sc->sc_ih == NULL) {
 159                 aprint_error_dev(self, "couldn't establish interrupt\n");
 160                 return;
 161         }
 162
 163         aha_attach(sc, &apd);
 164 }