1 /* $NetBSD: atppc_pnpbios.c,v 1.1 2004/01/28 09:09:14 jdolecek 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_pnpbios.c,v 1.1 2004/01/28 09:09:14 jdolecek 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 <machine/bus.h> 54 55 #include <dev/isa/isavar.h> 56 #include <dev/isa/isadmavar.h> 57 58 #include <i386/pnpbios/pnpbiosvar.h> 59 60 #include <dev/ic/atppcvar.h> 61 #include <dev/isa/atppc_isadma.h> 62 63 static int atppc_pnpbios_match(struct device *, struct cfdata *, void *); 64 static void atppc_pnpbios_attach(struct device *, struct device *, void *); 65 66 struct atppc_pnpbios_softc { 67 struct atppc_softc sc_atppc; 68 69 isa_chipset_tag_t sc_ic; 70 int sc_drq; 71 }; 72 73 CFATTACH_DECL(atppc_pnpbios, sizeof(struct atppc_pnpbios_softc), 74 atppc_pnpbios_match, atppc_pnpbios_attach, NULL, NULL); 75 76 static int atppc_pnpbios_dma_start(struct atppc_softc *, void *, u_int, 77 u_int8_t); 78 static int atppc_pnpbios_dma_finish(struct atppc_softc *); 79 static int atppc_pnpbios_dma_abort(struct atppc_softc *); 80 static int atppc_pnpbios_dma_malloc(struct device *, caddr_t *, bus_addr_t *, 81 bus_size_t); 82 static void atppc_pnpbios_dma_free(struct device *, caddr_t *, bus_addr_t *, 83 bus_size_t); 84 85 /* 86 * atppc_pnpbios_match: autoconf(9) match routine 87 */ 88 static int 89 atppc_pnpbios_match(struct device *parent, struct cfdata *match, void *aux) 90 { 91 struct pnpbiosdev_attach_args *aa = aux; 92 93 if (strcmp(aa->idstr, "PNP0400") == 0 94 || strcmp(aa->idstr, "PNP0401") == 0) 95 return (1); 96 97 return (0); 98 } 99 100 static void 101 atppc_pnpbios_attach(struct device *parent, struct device *self, void *aux) 102 { 103 struct atppc_softc *sc = (struct atppc_softc *) self; 104 struct atppc_pnpbios_softc *asc = (struct atppc_pnpbios_softc *)self; 105 struct pnpbiosdev_attach_args *aa = aux; 106 107 sc->sc_dev_ok = ATPPC_NOATTACH; 108 109 printf(": AT Parallel Port\n"); 110 111 if (pnpbios_io_map(aa->pbt, aa->resc, 0, &sc->sc_iot, &sc->sc_ioh)) { 112 printf("%s: can't map i/o space\n", sc->sc_dev.dv_xname); 113 return; 114 } 115 116 /* find our DRQ */ 117 if (pnpbios_getdmachan(aa->pbt, aa->resc, 0, &asc->sc_drq)) { 118 printf("%s: unable to get DMA channel\n", 119 sc->sc_dev.dv_xname); 120 return; 121 } 122 123 pnpbios_print_devres(self, aa); 124 125 /* Attach */ 126 sc->sc_has = 0; 127 asc->sc_ic = aa->ic; 128 sc->sc_dev_ok = ATPPC_ATTACHED; 129 130 sc->sc_ieh = pnpbios_intr_establish(aa->pbt, aa->resc, 0, IPL_TTY, 131 atppcintr, sc); 132 sc->sc_has |= ATPPC_HAS_INTR; 133 134 /* setup DMA hooks */ 135 if (atppc_isadma_setup(sc, asc->sc_ic, asc->sc_drq) == 0) { 136 sc->sc_has |= ATPPC_HAS_DMA; 137 sc->sc_dma_start = atppc_pnpbios_dma_start; 138 sc->sc_dma_finish = atppc_pnpbios_dma_finish; 139 sc->sc_dma_abort = atppc_pnpbios_dma_abort; 140 sc->sc_dma_malloc = atppc_pnpbios_dma_malloc; 141 sc->sc_dma_free = atppc_pnpbios_dma_free; 142 } 143 144 /* Run soft configuration attach */ 145 atppc_sc_attach(sc); 146 } 147 148 /* Start DMA operation over ISA bus */ 149 static int 150 atppc_pnpbios_dma_start(struct atppc_softc *lsc, void *buf, u_int nbytes, 151 u_int8_t mode) 152 { 153 struct atppc_pnpbios_softc * sc = (struct atppc_pnpbios_softc *) lsc; 154 155 return atppc_isadma_start(sc->sc_ic, sc->sc_drq, buf, nbytes, mode); 156 } 157 158 /* Stop DMA operation over ISA bus */ 159 static int 160 atppc_pnpbios_dma_finish(struct atppc_softc * lsc) 161 { 162 struct atppc_pnpbios_softc * sc = (struct atppc_pnpbios_softc *) lsc; 163 164 return atppc_isadma_finish(sc->sc_ic, sc->sc_drq); 165 } 166 167 /* Abort DMA operation over ISA bus */ 168 int 169 atppc_pnpbios_dma_abort(struct atppc_softc * lsc) 170 { 171 struct atppc_pnpbios_softc * sc = (struct atppc_pnpbios_softc *) lsc; 172 173 return atppc_isadma_abort(sc->sc_ic, sc->sc_drq); 174 } 175 176 /* Allocate memory for DMA over ISA bus */ 177 int 178 atppc_pnpbios_dma_malloc(struct device * dev, caddr_t * buf, bus_addr_t * bus_addr, 179 bus_size_t size) 180 { 181 struct atppc_pnpbios_softc * sc = (struct atppc_pnpbios_softc *) dev; 182 183 return atppc_isadma_malloc(sc->sc_ic, sc->sc_drq, buf, bus_addr, size); 184 } 185 186 /* Free memory allocated by atppc_isa_dma_malloc() */ 187 void 188 atppc_pnpbios_dma_free(struct device * dev, caddr_t * buf, bus_addr_t * bus_addr, 189 bus_size_t size) 190 { 191 struct atppc_pnpbios_softc * sc = (struct atppc_pnpbios_softc *) dev; 192 193 return atppc_isadma_free(sc->sc_ic, sc->sc_drq, buf, bus_addr, size); 194 } 195