atppc_ofisa.c revision 1.14
1/* $NetBSD: atppc_ofisa.c,v 1.14 2021/01/27 03:10:21 thorpej 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 1.14 2021/01/27 03:10:21 thorpej 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 55static int atppc_ofisa_match(device_t, cfdata_t, void *); 56static void atppc_ofisa_attach(device_t, device_t, void *); 57 58struct atppc_ofisa_softc { 59 struct atppc_softc sc_atppc; 60 61 isa_chipset_tag_t sc_ic; 62 int sc_drq; 63}; 64 65CFATTACH_DECL_NEW(atppc_ofisa, sizeof(struct atppc_ofisa_softc), atppc_ofisa_match, 66 atppc_ofisa_attach, NULL, NULL); 67 68static int atppc_ofisa_dma_start(struct atppc_softc *, void *, u_int, 69 u_int8_t); 70static int atppc_ofisa_dma_finish(struct atppc_softc *); 71static int atppc_ofisa_dma_abort(struct atppc_softc *); 72static int atppc_ofisa_dma_malloc(device_t, void **, bus_addr_t *, 73 bus_size_t); 74static void atppc_ofisa_dma_free(device_t, void **, bus_addr_t *, 75 bus_size_t); 76 77static const struct device_compatible_entry compat_data[] = { 78 { .compat = "pnpPNP,401" }, 79 DEVICE_COMPAT_EOL 80}; 81 82/* 83 * atppc_ofisa_match: autoconf(9) match routine 84 */ 85static int 86atppc_ofisa_match(device_t parent, cfdata_t match, void *aux) 87{ 88 struct ofisa_attach_args *aa = aux; 89 int rv; 90 91 rv = of_compatible_match(aa->oba.oba_phandle, compat_data) ? 5 : 0; 92#ifdef _LPT_OFISA_MD_MATCH 93 if (!rv) 94 rv = lpt_ofisa_md_match(parent, match, aux); 95#endif 96 return (rv); 97} 98 99static void 100atppc_ofisa_attach(device_t parent, device_t self, void *aux) 101{ 102 struct atppc_softc *sc = device_private(self); 103 struct atppc_ofisa_softc *asc = device_private(self); 104 struct ofisa_attach_args *aa = aux; 105 struct ofisa_reg_desc reg; 106 struct ofisa_intr_desc intr; 107 struct ofisa_dma_desc dma; 108 int n; 109 110 sc->sc_dev_ok = ATPPC_NOATTACH; 111 112 printf(": AT Parallel Port\n"); 113 114 /* find our I/O space */ 115 n = ofisa_reg_get(aa->oba.oba_phandle, ®, 1); 116#ifdef _LPT_OFISA_MD_REG_FIXUP 117 n = lpt_ofisa_md_reg_fixup(parent, self, aux, ®, 1, n); 118#endif 119 if (n != 1) { 120 aprint_error_dev(sc->sc_dev, "unable to find i/o register resource\n"); 121 return; 122 } 123 124 /* find our IRQ */ 125 n = ofisa_intr_get(aa->oba.oba_phandle, &intr, 1); 126#ifdef _LPT_OFISA_MD_INTR_FIXUP 127 n = lpt_ofisa_md_intr_fixup(parent, self, aux, &intr, 1, n); 128#endif 129 if (n != 1) { 130 aprint_error_dev(sc->sc_dev, "unable to find irq resource\n"); 131 return; 132 } 133 134 /* find our DRQ */ 135 if (ofisa_dma_get(aa->oba.oba_phandle, &dma, 1) != 1) { 136 aprint_error_dev(sc->sc_dev, "unable to find DMA data\n"); 137 return; 138 } 139 asc->sc_drq = dma.drq; 140 141 /* Attach */ 142 sc->sc_dev = self; 143 sc->sc_iot = (reg.type == OFISA_REG_TYPE_IO) ? aa->iot : aa->memt; 144 sc->sc_has = 0; 145 asc->sc_ic = aa->ic; 146 147 sc->sc_dev_ok = ATPPC_ATTACHED; 148 149 if (bus_space_map(sc->sc_iot, reg.addr, reg.len, 0, 150 &sc->sc_ioh) != 0) { 151 aprint_error_dev(self, "attempt to map bus space failed, device not " 152 "properly attached.\n"); 153 return; 154 } 155 156 sc->sc_ieh = isa_intr_establish(aa->ic, intr.irq, intr.share, 157 IPL_TTY, atppcintr, sc); 158 sc->sc_has |= ATPPC_HAS_INTR; 159 160 /* setup DMA hooks */ 161 if (atppc_isadma_setup(sc, asc->sc_ic, asc->sc_drq) == 0) { 162 sc->sc_has |= ATPPC_HAS_DMA; 163 sc->sc_dma_start = atppc_ofisa_dma_start; 164 sc->sc_dma_finish = atppc_ofisa_dma_finish; 165 sc->sc_dma_abort = atppc_ofisa_dma_abort; 166 sc->sc_dma_malloc = atppc_ofisa_dma_malloc; 167 sc->sc_dma_free = atppc_ofisa_dma_free; 168 } 169 170 /* Run soft configuration attach */ 171 atppc_sc_attach(sc); 172} 173 174/* Start DMA operation over ISA bus */ 175static int 176atppc_ofisa_dma_start(struct atppc_softc *lsc, void *buf, u_int nbytes, 177 u_int8_t mode) 178{ 179 struct atppc_ofisa_softc * sc = (struct atppc_ofisa_softc *) lsc; 180 181 return atppc_isadma_start(sc->sc_ic, sc->sc_drq, buf, nbytes, mode); 182} 183 184/* Stop DMA operation over ISA bus */ 185static int 186atppc_ofisa_dma_finish(struct atppc_softc * lsc) 187{ 188 struct atppc_ofisa_softc * sc = (struct atppc_ofisa_softc *) lsc; 189 190 return atppc_isadma_finish(sc->sc_ic, sc->sc_drq); 191} 192 193/* Abort DMA operation over ISA bus */ 194int 195atppc_ofisa_dma_abort(struct atppc_softc * lsc) 196{ 197 struct atppc_ofisa_softc * sc = (struct atppc_ofisa_softc *) lsc; 198 199 return atppc_isadma_abort(sc->sc_ic, sc->sc_drq); 200} 201 202/* Allocate memory for DMA over ISA bus */ 203int 204atppc_ofisa_dma_malloc(device_t dev, void ** buf, bus_addr_t * bus_addr, 205 bus_size_t size) 206{ 207 struct atppc_ofisa_softc * sc = device_private(dev); 208 209 return atppc_isadma_malloc(sc->sc_ic, sc->sc_drq, buf, bus_addr, size); 210} 211 212/* Free memory allocated by atppc_isa_dma_malloc() */ 213void 214atppc_ofisa_dma_free(device_t dev, void ** buf, bus_addr_t * bus_addr, 215 bus_size_t size) 216{ 217 struct atppc_ofisa_softc * sc = device_private(dev); 218 219 return atppc_isadma_free(sc->sc_ic, sc->sc_drq, buf, bus_addr, size); 220} 221