atppc_ofisa.c revision 1.8
1/* $NetBSD: atppc_ofisa.c,v 1.8 2008/04/15 15:02:28 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 * 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 1.8 2008/04/15 15:02:28 cegger 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_NEW(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 aprint_error_dev(sc->sc_dev, "unable to find i/o register resource\n"); 124 return; 125 } 126 127 /* find our IRQ */ 128 n = ofisa_intr_get(aa->oba.oba_phandle, &intr, 1); 129#ifdef _LPT_OFISA_MD_INTR_FIXUP 130 n = lpt_ofisa_md_intr_fixup(parent, self, aux, &intr, 1, n); 131#endif 132 if (n != 1) { 133 aprint_error_dev(sc->sc_dev, "unable to find irq resource\n"); 134 return; 135 } 136 137 /* find our DRQ */ 138 if (ofisa_dma_get(aa->oba.oba_phandle, &dma, 1) != 1) { 139 aprint_error_dev(sc->sc_dev, "unable to find DMA data\n"); 140 return; 141 } 142 asc->sc_drq = dma.drq; 143 144 /* Attach */ 145 sc->sc_iot = (reg.type == OFISA_REG_TYPE_IO) ? aa->iot : aa->memt; 146 sc->sc_has = 0; 147 asc->sc_ic = aa->ic; 148 149 sc->sc_dev_ok = ATPPC_ATTACHED; 150 151 if (bus_space_map(sc->sc_iot, reg.addr, reg.len, 0, 152 &sc->sc_ioh) != 0) { 153 aprint_error_dev(self, "attempt to map bus space failed, device not " 154 "properly attached.\n"); 155 return; 156 } 157 158 sc->sc_ieh = isa_intr_establish(aa->ic, intr.irq, intr.share, 159 IPL_TTY, atppcintr, sc); 160 sc->sc_has |= ATPPC_HAS_INTR; 161 162 /* setup DMA hooks */ 163 if (atppc_isadma_setup(sc, asc->sc_ic, asc->sc_drq) == 0) { 164 sc->sc_has |= ATPPC_HAS_DMA; 165 sc->sc_dma_start = atppc_ofisa_dma_start; 166 sc->sc_dma_finish = atppc_ofisa_dma_finish; 167 sc->sc_dma_abort = atppc_ofisa_dma_abort; 168 sc->sc_dma_malloc = atppc_ofisa_dma_malloc; 169 sc->sc_dma_free = atppc_ofisa_dma_free; 170 } 171 172 /* Run soft configuration attach */ 173 atppc_sc_attach(sc); 174} 175 176/* Start DMA operation over ISA bus */ 177static int 178atppc_ofisa_dma_start(struct atppc_softc *lsc, void *buf, u_int nbytes, 179 u_int8_t mode) 180{ 181 struct atppc_ofisa_softc * sc = (struct atppc_ofisa_softc *) lsc; 182 183 return atppc_isadma_start(sc->sc_ic, sc->sc_drq, buf, nbytes, mode); 184} 185 186/* Stop DMA operation over ISA bus */ 187static int 188atppc_ofisa_dma_finish(struct atppc_softc * lsc) 189{ 190 struct atppc_ofisa_softc * sc = (struct atppc_ofisa_softc *) lsc; 191 192 return atppc_isadma_finish(sc->sc_ic, sc->sc_drq); 193} 194 195/* Abort DMA operation over ISA bus */ 196int 197atppc_ofisa_dma_abort(struct atppc_softc * lsc) 198{ 199 struct atppc_ofisa_softc * sc = (struct atppc_ofisa_softc *) lsc; 200 201 return atppc_isadma_abort(sc->sc_ic, sc->sc_drq); 202} 203 204/* Allocate memory for DMA over ISA bus */ 205int 206atppc_ofisa_dma_malloc(struct device * dev, void ** buf, bus_addr_t * bus_addr, 207 bus_size_t size) 208{ 209 struct atppc_ofisa_softc * sc = (struct atppc_ofisa_softc *) dev; 210 211 return atppc_isadma_malloc(sc->sc_ic, sc->sc_drq, buf, bus_addr, size); 212} 213 214/* Free memory allocated by atppc_isa_dma_malloc() */ 215void 216atppc_ofisa_dma_free(struct device * dev, void ** buf, bus_addr_t * bus_addr, 217 bus_size_t size) 218{ 219 struct atppc_ofisa_softc * sc = (struct atppc_ofisa_softc *) dev; 220 221 return atppc_isadma_free(sc->sc_ic, sc->sc_drq, buf, bus_addr, size); 222} 223