sys/dev/isapnp/atppc_isapnp.c

   1 /* $NetBSD: atppc_isapnp.c,v 1.10 2008/04/16 09:39:01 cegger Exp $ */
   2
   3 /*-
   4  * Copyright (c) 2004 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Jaromir Dolecek.
   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: atppc_isapnp.c,v 1.10 2008/04/16 09:39:01 cegger Exp $");
  34
  35 #include "opt_atppc.h"
  36
  37 #include <sys/param.h>
  38 #include <sys/systm.h>
  39 #include <sys/errno.h>
  40 #include <sys/ioctl.h>
  41 #include <sys/syslog.h>
  42 #include <sys/device.h>
  43 #include <sys/proc.h>
  44 #include <sys/termios.h>
  45
  46 #include <sys/bus.h>
  47
  48 #include <dev/isa/isavar.h>
  49 #include <dev/isa/isadmavar.h>
  50
  51 #include <dev/isapnp/isapnpreg.h>
  52 #include <dev/isapnp/isapnpvar.h>
  53 #include <dev/isapnp/isapnpdevs.h>
  54
  55 #include <dev/ic/atppcvar.h>
  56 #include <dev/isa/atppc_isadma.h>
  57
  58 static int      atppc_isapnp_match(device_t, cfdata_t, void *);
  59 static void     atppc_isapnp_attach(device_t, device_t, void *);
  60
  61 struct atppc_isapnp_softc {
  62         struct atppc_softc sc_atppc;
  63
  64         isa_chipset_tag_t sc_ic;
  65         int sc_drq;
  66 };
  67
  68 CFATTACH_DECL_NEW(atppc_isapnp, sizeof(struct atppc_isapnp_softc),
  69     atppc_isapnp_match, atppc_isapnp_attach, NULL, NULL);
  70
  71 static int atppc_isapnp_dma_start(struct atppc_softc *, void *, u_int,
  72         u_int8_t);
  73 static int atppc_isapnp_dma_finish(struct atppc_softc *);
  74 static int atppc_isapnp_dma_abort(struct atppc_softc *);
  75 static int atppc_isapnp_dma_malloc(device_t, void **, bus_addr_t *,
  76         bus_size_t);
  77 static void atppc_isapnp_dma_free(device_t, void **, bus_addr_t *,
  78         bus_size_t);
  79 /*
  80  * atppc_isapnp_match: autoconf(9) match routine
  81  */
  82 static int
  83 atppc_isapnp_match(device_t parent, cfdata_t match, void *aux)
  84 {
  85         int pri, variant;
  86
  87         pri = isapnp_devmatch(aux, &isapnp_atppc_devinfo, &variant);
  88         if (pri && variant > 0)
  89                 pri = 0;
  90         return (pri);
  91 }
  92
  93 static void
  94 atppc_isapnp_attach(device_t parent, device_t self, void *aux)
  95 {
  96         struct atppc_softc *sc = device_private(self);
  97         struct atppc_isapnp_softc *asc = device_private(self);
  98         struct isapnp_attach_args *ipa = aux;
  99
 100         sc->sc_dev_ok = ATPPC_NOATTACH;
 101
 102         printf(": AT Parallel Port\n");
 103
 104         if (isapnp_config(ipa->ipa_iot, ipa->ipa_memt, ipa)) {
 105                 aprint_error_dev(sc->sc_dev, "error in region allocation\n");
 106                 return;
 107         }
 108
 109         /* Attach */
 110         sc->sc_dev = self;
 111         sc->sc_iot = ipa->ipa_iot;
 112         sc->sc_ioh = ipa->ipa_io[0].h;
 113         sc->sc_has = 0;
 114         asc->sc_ic = ipa->ipa_ic;
 115         asc->sc_drq = -1;       /* Initialized below */
 116
 117         sc->sc_dev_ok = ATPPC_ATTACHED;
 118
 119         sc->sc_ieh = isa_intr_establish(ipa->ipa_ic, ipa->ipa_irq[0].num,
 120             ipa->ipa_irq[0].type, IPL_TTY, atppcintr, sc);
 121         sc->sc_has |= ATPPC_HAS_INTR;
 122
 123         /* setup DMA hooks */
 124         if (ipa->ipa_ndrq > 0
 125             && atppc_isadma_setup(sc, asc->sc_ic, ipa->ipa_drq[0].num) == 0) {
 126                 asc->sc_drq = ipa->ipa_drq[0].num;
 127                 sc->sc_has |= ATPPC_HAS_DMA;
 128                 sc->sc_dma_start = atppc_isapnp_dma_start;
 129                 sc->sc_dma_finish = atppc_isapnp_dma_finish;
 130                 sc->sc_dma_abort = atppc_isapnp_dma_abort;
 131                 sc->sc_dma_malloc = atppc_isapnp_dma_malloc;
 132                 sc->sc_dma_free = atppc_isapnp_dma_free;
 133         }
 134
 135         /* Run soft configuration attach */
 136         atppc_sc_attach(sc);
 137 }
 138
 139 /* Start DMA operation over ISA bus */
 140 static int
 141 atppc_isapnp_dma_start(struct atppc_softc *lsc, void *buf, u_int nbytes,
 142         u_int8_t mode)
 143 {
 144         struct atppc_isapnp_softc * sc = (struct atppc_isapnp_softc *) lsc;
 145
 146         return atppc_isadma_start(sc->sc_ic, sc->sc_drq, buf, nbytes, mode);
 147 }
 148
 149 /* Stop DMA operation over ISA bus */
 150 static int
 151 atppc_isapnp_dma_finish(struct atppc_softc * lsc)
 152 {
 153         struct atppc_isapnp_softc * sc = (struct atppc_isapnp_softc *) lsc;
 154
 155         return atppc_isadma_finish(sc->sc_ic, sc->sc_drq);
 156 }
 157
 158 /* Abort DMA operation over ISA bus */
 159 int
 160 atppc_isapnp_dma_abort(struct atppc_softc * lsc)
 161 {
 162         struct atppc_isapnp_softc * sc = (struct atppc_isapnp_softc *) lsc;
 163
 164         return atppc_isadma_abort(sc->sc_ic, sc->sc_drq);
 165 }
 166
 167 /* Allocate memory for DMA over ISA bus */
 168 int
 169 atppc_isapnp_dma_malloc(device_t dev, void ** buf, bus_addr_t * bus_addr,
 170         bus_size_t size)
 171 {
 172         struct atppc_isapnp_softc * sc = device_private(dev);
 173
 174         return atppc_isadma_malloc(sc->sc_ic, sc->sc_drq, buf, bus_addr, size);
 175 }
 176
 177 /* Free memory allocated by atppc_isa_dma_malloc() */
 178 void
 179 atppc_isapnp_dma_free(device_t dev, void ** buf, bus_addr_t * bus_addr,
 180         bus_size_t size)
 181 {
 182         struct atppc_isapnp_softc * sc = device_private(dev);
 183
 184         return atppc_isadma_free(sc->sc_ic, sc->sc_drq, buf, bus_addr, size);
 185 }