1 /* $NetBSD: atppc_isapnp.c,v 1.11 2008/04/28 20:23:52 martin 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 1.11 2008/04/28 20:23:52 martin 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 } 186