atppc_ofisa.c revision 1.6
1/* $NetBSD: atppc_ofisa.c,v 1.6 2007/10/19 12:00:37 ad 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 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39#include <sys/cdefs.h> 40__KERNEL_RCSID(0, "$NetBSD: atppc_ofisa.c,v 1.6 2007/10/19 12:00:37 ad Exp $"); 41 42#include "opt_atppc.h" 43 44#include <sys/param.h> 45#include <sys/systm.h> 46#include <sys/errno.h> 47#include <sys/ioctl.h> 48#include <sys/syslog.h> 49#include <sys/device.h> 50#include <sys/proc.h> 51#include <sys/termios.h> 52 53#include <sys/bus.h> 54 55#include <dev/ofw/openfirm.h> 56#include <dev/isa/isavar.h> 57#include <dev/ofisa/ofisavar.h> 58 59#include <dev/ic/atppcvar.h> 60#include <dev/isa/atppc_isadma.h> 61 62static int atppc_ofisa_match(struct device *, struct cfdata *, void *); 63static void atppc_ofisa_attach(struct device *, struct device *, void *); 64 65struct atppc_ofisa_softc { 66 struct atppc_softc sc_atppc; 67 68 isa_chipset_tag_t sc_ic; 69 int sc_drq; 70}; 71 72CFATTACH_DECL(atppc_ofisa, sizeof(struct atppc_ofisa_softc), atppc_ofisa_match, 73 atppc_ofisa_attach, NULL, NULL); 74 75static int atppc_ofisa_dma_start(struct atppc_softc *, void *, u_int, 76 u_int8_t); 77static int atppc_ofisa_dma_finish(struct atppc_softc *); 78static int atppc_ofisa_dma_abort(struct atppc_softc *); 79static int atppc_ofisa_dma_malloc(struct device *, void **, bus_addr_t *, 80 bus_size_t); 81static void atppc_ofisa_dma_free(struct device *, void **, bus_addr_t *, 82 bus_size_t); 83/* 84 * atppc_ofisa_match: autoconf(9) match routine 85 */ 86static int 87atppc_ofisa_match(struct device *parent, struct cfdata *match, void *aux) 88{ 89 struct ofisa_attach_args *aa = aux; 90 static const char *const compatible_strings[] = { "pnpPNP,401", NULL }; 91 int rv = 0; 92 93 if (of_compatible(aa->oba.oba_phandle, compatible_strings) != -1) 94 rv = 5; 95#ifdef _LPT_OFISA_MD_MATCH 96 if (!rv) 97 rv = lpt_ofisa_md_match(parent, match, aux); 98#endif 99 return (rv); 100} 101 102static void 103atppc_ofisa_attach(struct device *parent, struct device *self, void *aux) 104{ 105 struct atppc_softc *sc = device_private(self); 106 struct atppc_ofisa_softc *asc = device_private(self); 107 struct ofisa_attach_args *aa = aux; 108 struct ofisa_reg_desc reg; 109 struct ofisa_intr_desc intr; 110 struct ofisa_dma_desc dma; 111 int n; 112 113 sc->sc_dev_ok = ATPPC_NOATTACH; 114 115 printf(": AT Parallel Port\n"); 116 117 /* find our I/O space */ 118 n = ofisa_reg_get(aa->oba.oba_phandle, ®, 1); 119#ifdef _LPT_OFISA_MD_REG_FIXUP 120 n = lpt_ofisa_md_reg_fixup(parent, self, aux, ®, 1, n); 121#endif 122 if (n != 1) { 123 printf("%s: unable to find i/o register resource\n", 124 sc->sc_dev.dv_xname); 125 return; 126 } 127 128 /* find our IRQ */ 129 n = ofisa_intr_get(aa->oba.oba_phandle, &intr, 1); 130#ifdef _LPT_OFISA_MD_INTR_FIXUP 131 n = lpt_ofisa_md_intr_fixup(parent, self, aux, &intr, 1, n); 132#endif 133 if (n != 1) { 134 printf("%s: unable to find irq resource\n", 135 sc->sc_dev.dv_xname); 136 return; 137 } 138 139 /* find our DRQ */ 140 if (ofisa_dma_get(aa->oba.oba_phandle, &dma, 1) != 1) { 141 printf("%s: unable to find DMA data\n", 142 sc->sc_dev.dv_xname); 143 return; 144 } 145 asc->sc_drq = dma.drq; 146 147 /* Attach */ 148 sc->sc_iot = (reg.type == OFISA_REG_TYPE_IO) ? aa->iot : aa->memt; 149 sc->sc_has = 0; 150 asc->sc_ic = aa->ic; 151 152 sc->sc_dev_ok = ATPPC_ATTACHED; 153 154 if (bus_space_map(sc->sc_iot, reg.addr, reg.len, 0, 155 &sc->sc_ioh) != 0) { 156 printf("%s: attempt to map bus space failed, device not " 157 "properly attached.\n", self->dv_xname); 158 return; 159 } 160 161 sc->sc_ieh = isa_intr_establish(aa->ic, intr.irq, intr.share, 162 IPL_TTY, atppcintr, sc); 163 sc->sc_has |= ATPPC_HAS_INTR; 164 165 /* setup DMA hooks */ 166 if (atppc_isadma_setup(sc, asc->sc_ic, asc->sc_drq) == 0) { 167 sc->sc_has |= ATPPC_HAS_DMA; 168 sc->sc_dma_start = atppc_ofisa_dma_start; 169 sc->sc_dma_finish = atppc_ofisa_dma_finish; 170 sc->sc_dma_abort = atppc_ofisa_dma_abort; 171 sc->sc_dma_malloc = atppc_ofisa_dma_malloc; 172 sc->sc_dma_free = atppc_ofisa_dma_free; 173 } 174 175 /* Run soft configuration attach */ 176 atppc_sc_attach(sc); 177} 178 179/* Start DMA operation over ISA bus */ 180static int 181atppc_ofisa_dma_start(struct atppc_softc *lsc, void *buf, u_int nbytes, 182 u_int8_t mode) 183{ 184 struct atppc_ofisa_softc * sc = (struct atppc_ofisa_softc *) lsc; 185 186 return atppc_isadma_start(sc->sc_ic, sc->sc_drq, buf, nbytes, mode); 187} 188 189/* Stop DMA operation over ISA bus */ 190static int 191atppc_ofisa_dma_finish(struct atppc_softc * lsc) 192{ 193 struct atppc_ofisa_softc * sc = (struct atppc_ofisa_softc *) lsc; 194 195 return atppc_isadma_finish(sc->sc_ic, sc->sc_drq); 196} 197 198/* Abort DMA operation over ISA bus */ 199int 200atppc_ofisa_dma_abort(struct atppc_softc * lsc) 201{ 202 struct atppc_ofisa_softc * sc = (struct atppc_ofisa_softc *) lsc; 203 204 return atppc_isadma_abort(sc->sc_ic, sc->sc_drq); 205} 206 207/* Allocate memory for DMA over ISA bus */ 208int 209atppc_ofisa_dma_malloc(struct device * dev, void ** buf, bus_addr_t * bus_addr, 210 bus_size_t size) 211{ 212 struct atppc_ofisa_softc * sc = (struct atppc_ofisa_softc *) dev; 213 214 return atppc_isadma_malloc(sc->sc_ic, sc->sc_drq, buf, bus_addr, size); 215} 216 217/* Free memory allocated by atppc_isa_dma_malloc() */ 218void 219atppc_ofisa_dma_free(struct device * dev, void ** buf, bus_addr_t * bus_addr, 220 bus_size_t size) 221{ 222 struct atppc_ofisa_softc * sc = (struct atppc_ofisa_softc *) dev; 223 224 return atppc_isadma_free(sc->sc_ic, sc->sc_drq, buf, bus_addr, size); 225} 226