wdc_amiga.c revision 1.3
1 /* $NetBSD: wdc_amiga.c,v 1.3 2000/02/10 15:51:59 aymeric Exp $ */ 2 3 /*- 4 * Copyright (c) 2000 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Michael L. Hitch. 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/types.h> 40 #include <sys/param.h> 41 #include <sys/systm.h> 42 #include <sys/malloc.h> 43 #include <sys/device.h> 44 45 #include <machine/cpu.h> 46 #include <machine/bus.h> 47 #include <machine/intr.h> 48 #include <machine/bswap.h> 49 50 #include <amiga/amiga/cia.h> 51 #include <amiga/amiga/custom.h> 52 #include <amiga/amiga/device.h> 53 #include <amiga/amiga/gayle.h> 54 #include <amiga/dev/zbusvar.h> 55 56 #include <dev/ata/atavar.h> 57 #include <dev/ic/wdcvar.h> 58 59 struct wdc_amiga_softc { 60 struct wdc_softc sc_wdcdev; 61 struct channel_softc *wdc_chanptr; 62 struct channel_softc wdc_channel; 63 struct isr sc_isr; 64 volatile u_char *sc_intreg; 65 struct bus_space_tag iot; 66 char sc_a1200; 67 }; 68 69 int wdc_amiga_probe __P((struct device *, struct cfdata *, void *)); 70 void wdc_amiga_attach __P((struct device *, struct device *, void *)); 71 int wdc_amiga_intr __P((void *)); 72 73 struct cfattach wdc_amiga_ca = { 74 sizeof(struct wdc_amiga_softc), wdc_amiga_probe, wdc_amiga_attach 75 }; 76 77 int 78 wdc_amiga_probe(parent, cfp, aux) 79 struct device *parent; 80 struct cfdata *cfp; 81 void *aux; 82 { 83 if ((!is_a4000() && !is_a1200()) || !matchname(aux, "wdc")) 84 return(0); 85 return 1; 86 } 87 88 void 89 wdc_amiga_attach(parent, self, aux) 90 struct device *parent, *self; 91 void *aux; 92 { 93 struct wdc_amiga_softc *sc = (void *)self; 94 95 printf("\n"); 96 97 if (is_a4000()) { 98 sc->iot.base = (u_long)ztwomap(0xdd2020 + 2); 99 sc->sc_intreg = (u_char *)ztwomap(0xdd2020 + 0x1000); 100 sc->sc_a1200 = 0; 101 } else { 102 sc->iot.base = (u_long)ztwomap(0xda0000 + 2); 103 sc->sc_a1200 = 1; 104 gayle_init(); 105 sc->sc_intreg = &gayle.intreq; 106 gayle.intena |= GAYLE_INT_IDE; 107 } 108 sc->iot.absm = &amiga_bus_stride_4swap; 109 sc->wdc_channel.cmd_iot = sc->wdc_channel.ctl_iot = &sc->iot; 110 if (bus_space_map(sc->wdc_channel.cmd_iot, 0, 0x40, 0, 111 &sc->wdc_channel.cmd_ioh)) { 112 printf("%s: couldn't map registers\n", 113 sc->sc_wdcdev.sc_dev.dv_xname); 114 return; 115 } 116 if (bus_space_subregion(sc->wdc_channel.cmd_iot, 117 sc->wdc_channel.cmd_ioh, 0x406, 1, &sc->wdc_channel.ctl_ioh)) 118 return; 119 120 sc->sc_wdcdev.cap = WDC_CAPABILITY_DATA16; 121 sc->sc_wdcdev.PIO_cap = 0; 122 sc->wdc_chanptr = &sc->wdc_channel; 123 sc->sc_wdcdev.channels = &sc->wdc_chanptr; 124 sc->sc_wdcdev.nchannels = 1; 125 sc->wdc_channel.channel = 0; 126 sc->wdc_channel.wdc = &sc->sc_wdcdev; 127 sc->wdc_channel.ch_queue = malloc(sizeof(struct channel_queue), 128 M_DEVBUF, M_NOWAIT); 129 if (sc->wdc_channel.ch_queue == NULL) { 130 printf("%s: can't allocate memory for command queue", 131 sc->sc_wdcdev.sc_dev.dv_xname); 132 return; 133 } 134 sc->sc_isr.isr_intr = wdc_amiga_intr; 135 sc->sc_isr.isr_arg = sc; 136 sc->sc_isr.isr_ipl = 2; 137 add_isr (&sc->sc_isr); 138 139 wdcattach(&sc->wdc_channel); 140 141 } 142 143 int 144 wdc_amiga_intr(arg) 145 void *arg; 146 { 147 struct wdc_amiga_softc *sc = (struct wdc_amiga_softc *)arg; 148 int ret = 0; 149 150 if (*sc->sc_intreg & 0x80) { 151 ret = wdcintr(&sc->wdc_channel); 152 if (sc->sc_a1200) 153 *sc->sc_intreg = 0x7c | (*sc->sc_intreg & 0x03); 154 } 155 156 return ret; 157 } 158
Indexes created Wed Sep 24 22:09:59 GMT 2025