sys/dev/ofisa/atppc_ofisa.c

   1 /* $NetBSD: atppc_ofisa.c,v 1.9 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_ofisa.c,v 1.9 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/ofw/openfirm.h>
  49 #include <dev/isa/isavar.h>
  50 #include <dev/ofisa/ofisavar.h>
  51
  52 #include <dev/ic/atppcvar.h>
  53 #include <dev/isa/atppc_isadma.h>
  54
  55 static int      atppc_ofisa_match(device_t, cfdata_t, void *);
  56 static void     atppc_ofisa_attach(device_t, device_t, void *);
  57
  58 struct atppc_ofisa_softc {
  59         struct atppc_softc sc_atppc;
  60
  61         isa_chipset_tag_t sc_ic;
  62         int sc_drq;
  63 };
  64
  65 CFATTACH_DECL_NEW(atppc_ofisa, sizeof(struct atppc_ofisa_softc), atppc_ofisa_match,
  66     atppc_ofisa_attach, NULL, NULL);
  67
  68 static int atppc_ofisa_dma_start(struct atppc_softc *, void *, u_int,
  69         u_int8_t);
  70 static int atppc_ofisa_dma_finish(struct atppc_softc *);
  71 static int atppc_ofisa_dma_abort(struct atppc_softc *);
  72 static int atppc_ofisa_dma_malloc(device_t, void **, bus_addr_t *,
  73         bus_size_t);
  74 static void atppc_ofisa_dma_free(device_t, void **, bus_addr_t *,
  75         bus_size_t);
  76 /*
  77  * atppc_ofisa_match: autoconf(9) match routine
  78  */
  79 static int
  80 atppc_ofisa_match(device_t parent, cfdata_t match, void *aux)
  81 {
  82         struct ofisa_attach_args *aa = aux;
  83         static const char *const compatible_strings[] = { "pnpPNP,401", NULL };
  84         int rv = 0;
  85
  86         if (of_compatible(aa->oba.oba_phandle, compatible_strings) != -1)
  87                 rv = 5;
  88 #ifdef _LPT_OFISA_MD_MATCH
  89         if (!rv)
  90                 rv = lpt_ofisa_md_match(parent, match, aux);
  91 #endif
  92         return (rv);
  93 }
  94
  95 static void
  96 atppc_ofisa_attach(device_t parent, device_t self, void *aux)
  97 {
  98         struct atppc_softc *sc = device_private(self);
  99         struct atppc_ofisa_softc *asc = device_private(self);
 100         struct ofisa_attach_args *aa = aux;
 101         struct ofisa_reg_desc reg;
 102         struct ofisa_intr_desc intr;
 103         struct ofisa_dma_desc dma;
 104         int n;
 105
 106         sc->sc_dev_ok = ATPPC_NOATTACH;
 107
 108         printf(": AT Parallel Port\n");
 109
 110         /* find our I/O space */
 111         n = ofisa_reg_get(aa->oba.oba_phandle, &reg, 1);
 112 #ifdef _LPT_OFISA_MD_REG_FIXUP
 113         n = lpt_ofisa_md_reg_fixup(parent, self, aux, &reg, 1, n);
 114 #endif
 115         if (n != 1) {
 116                 aprint_error_dev(sc->sc_dev, "unable to find i/o register resource\n");
 117                 return;
 118         }
 119
 120         /* find our IRQ */
 121         n = ofisa_intr_get(aa->oba.oba_phandle, &intr, 1);
 122 #ifdef _LPT_OFISA_MD_INTR_FIXUP
 123         n = lpt_ofisa_md_intr_fixup(parent, self, aux, &intr, 1, n);
 124 #endif
 125         if (n != 1) {
 126                 aprint_error_dev(sc->sc_dev, "unable to find irq resource\n");
 127                 return;
 128         }
 129
 130         /* find our DRQ */
 131         if (ofisa_dma_get(aa->oba.oba_phandle, &dma, 1) != 1) {
 132                 aprint_error_dev(sc->sc_dev, "unable to find DMA data\n");
 133                 return;
 134         }
 135         asc->sc_drq = dma.drq;
 136
 137         /* Attach */
 138         sc->sc_dev = self;
 139         sc->sc_iot = (reg.type == OFISA_REG_TYPE_IO) ? aa->iot : aa->memt;
 140         sc->sc_has = 0;
 141         asc->sc_ic = aa->ic;
 142
 143         sc->sc_dev_ok = ATPPC_ATTACHED;
 144
 145         if (bus_space_map(sc->sc_iot, reg.addr, reg.len, 0,
 146                 &sc->sc_ioh) != 0) {
 147                 aprint_error_dev(self, "attempt to map bus space failed, device not "
 148                         "properly attached.\n");
 149                 return;
 150         }
 151
 152         sc->sc_ieh = isa_intr_establish(aa->ic, intr.irq, intr.share,
 153             IPL_TTY, atppcintr, sc);
 154         sc->sc_has |= ATPPC_HAS_INTR;
 155
 156         /* setup DMA hooks */
 157         if (atppc_isadma_setup(sc, asc->sc_ic, asc->sc_drq) == 0) {
 158                 sc->sc_has |= ATPPC_HAS_DMA;
 159                 sc->sc_dma_start = atppc_ofisa_dma_start;
 160                 sc->sc_dma_finish = atppc_ofisa_dma_finish;
 161                 sc->sc_dma_abort = atppc_ofisa_dma_abort;
 162                 sc->sc_dma_malloc = atppc_ofisa_dma_malloc;
 163                 sc->sc_dma_free = atppc_ofisa_dma_free;
 164         }
 165
 166         /* Run soft configuration attach */
 167         atppc_sc_attach(sc);
 168 }
 169
 170 /* Start DMA operation over ISA bus */
 171 static int
 172 atppc_ofisa_dma_start(struct atppc_softc *lsc, void *buf, u_int nbytes,
 173         u_int8_t mode)
 174 {
 175         struct atppc_ofisa_softc * sc = (struct atppc_ofisa_softc *) lsc;
 176
 177         return atppc_isadma_start(sc->sc_ic, sc->sc_drq, buf, nbytes, mode);
 178 }
 179
 180 /* Stop DMA operation over ISA bus */
 181 static int
 182 atppc_ofisa_dma_finish(struct atppc_softc * lsc)
 183 {
 184         struct atppc_ofisa_softc * sc = (struct atppc_ofisa_softc *) lsc;
 185
 186         return atppc_isadma_finish(sc->sc_ic, sc->sc_drq);
 187 }
 188
 189 /* Abort DMA operation over ISA bus */
 190 int
 191 atppc_ofisa_dma_abort(struct atppc_softc * lsc)
 192 {
 193         struct atppc_ofisa_softc * sc = (struct atppc_ofisa_softc *) lsc;
 194
 195         return atppc_isadma_abort(sc->sc_ic, sc->sc_drq);
 196 }
 197
 198 /* Allocate memory for DMA over ISA bus */
 199 int
 200 atppc_ofisa_dma_malloc(device_t dev, void ** buf, bus_addr_t * bus_addr,
 201         bus_size_t size)
 202 {
 203         struct atppc_ofisa_softc * sc = device_private(dev);
 204
 205         return atppc_isadma_malloc(sc->sc_ic, sc->sc_drq, buf, bus_addr, size);
 206 }
 207
 208 /* Free memory allocated by atppc_isa_dma_malloc() */
 209 void
 210 atppc_ofisa_dma_free(device_t dev, void ** buf, bus_addr_t * bus_addr,
 211         bus_size_t size)
 212 {
 213         struct atppc_ofisa_softc * sc = device_private(dev);
 214
 215         return atppc_isadma_free(sc->sc_ic, sc->sc_drq, buf, bus_addr, size);
 216 }