wdc_amiga.c revision 1.10
1 /* $NetBSD: wdc_amiga.c,v 1.10 2002/10/02 04:55:53 thorpej 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/cdefs.h> 40 __KERNEL_RCSID(0, "$NetBSD: wdc_amiga.c,v 1.10 2002/10/02 04:55:53 thorpej Exp $"); 41 42 #include <sys/types.h> 43 #include <sys/param.h> 44 #include <sys/systm.h> 45 #include <sys/malloc.h> 46 #include <sys/device.h> 47 48 #include <machine/cpu.h> 49 #include <machine/bus.h> 50 #include <machine/intr.h> 51 #include <machine/bswap.h> 52 53 #include <amiga/amiga/cia.h> 54 #include <amiga/amiga/custom.h> 55 #include <amiga/amiga/device.h> 56 #include <amiga/amiga/gayle.h> 57 #include <amiga/dev/zbusvar.h> 58 59 #include <dev/ata/atavar.h> 60 #include <dev/ic/wdcvar.h> 61 62 struct wdc_amiga_softc { 63 struct wdc_softc sc_wdcdev; 64 struct channel_softc *wdc_chanptr; 65 struct channel_softc wdc_channel; 66 struct isr sc_isr; 67 volatile u_char *sc_intreg; 68 struct bus_space_tag cmd_iot; 69 struct bus_space_tag ctl_iot; 70 char sc_a1200; 71 }; 72 73 int wdc_amiga_probe(struct device *, struct cfdata *, void *); 74 void wdc_amiga_attach(struct device *, struct device *, void *); 75 int wdc_amiga_intr(void *); 76 77 CFATTACH_DECL(wdc_amiga, sizeof(struct wdc_amiga_softc), 78 wdc_amiga_probe, wdc_amiga_attach, NULL, NULL); 79 80 int 81 wdc_amiga_probe(struct device *parent, struct cfdata *cfp, 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(struct device *parent, struct device *self, void *aux) 90 { 91 struct wdc_amiga_softc *sc = (void *)self; 92 93 printf("\n"); 94 95 if (is_a4000()) { 96 sc->cmd_iot.base = (u_long)ztwomap(0xdd2020 + 2); 97 sc->sc_intreg = (u_char *)ztwomap(0xdd2020 + 0x1000); 98 sc->sc_a1200 = 0; 99 } else { 100 sc->cmd_iot.base = (u_long) ztwomap(0xda0000 + 2); 101 sc->ctl_iot.base = (u_long) ztwomap(0xda4000); 102 gayle_init(); 103 sc->sc_intreg = &gayle.intreq; 104 sc->sc_a1200 = 1; 105 } 106 sc->cmd_iot.absm = sc->ctl_iot.absm = &amiga_bus_stride_4swap; 107 sc->wdc_channel.cmd_iot = &sc->cmd_iot; 108 sc->wdc_channel.ctl_iot = &sc->ctl_iot; 109 110 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 } 116 117 if (sc->sc_a1200) 118 sc->wdc_channel.ctl_ioh = sc->ctl_iot.base; 119 else if (bus_space_subregion(sc->wdc_channel.cmd_iot, 120 sc->wdc_channel.cmd_ioh, 0x406, 1, &sc->wdc_channel.ctl_ioh)) 121 return; 122 123 sc->sc_wdcdev.cap = WDC_CAPABILITY_DATA16; 124 sc->sc_wdcdev.PIO_cap = 0; 125 sc->wdc_chanptr = &sc->wdc_channel; 126 sc->sc_wdcdev.channels = &sc->wdc_chanptr; 127 sc->sc_wdcdev.nchannels = 1; 128 sc->wdc_channel.channel = 0; 129 sc->wdc_channel.wdc = &sc->sc_wdcdev; 130 sc->wdc_channel.ch_queue = malloc(sizeof(struct channel_queue), 131 M_DEVBUF, M_NOWAIT); 132 if (sc->wdc_channel.ch_queue == NULL) { 133 printf("%s: can't allocate memory for command queue", 134 sc->sc_wdcdev.sc_dev.dv_xname); 135 return; 136 } 137 sc->sc_isr.isr_intr = wdc_amiga_intr; 138 sc->sc_isr.isr_arg = sc; 139 sc->sc_isr.isr_ipl = 2; 140 add_isr (&sc->sc_isr); 141 142 if (sc->sc_a1200) 143 gayle.intena |= GAYLE_INT_IDE; 144 145 wdcattach(&sc->wdc_channel); 146 } 147 148 int 149 wdc_amiga_intr(void *arg) 150 { 151 struct wdc_amiga_softc *sc = (struct wdc_amiga_softc *)arg; 152 u_char intreq = *sc->sc_intreg; 153 int ret = 0; 154 155 if (intreq & GAYLE_INT_IDE) { 156 if (sc->sc_a1200) 157 gayle.intreq = 0x7c | (intreq & 0x03); 158 ret = wdcintr(&sc->wdc_channel); 159 } 160 161 return ret; 162 } 163
Indexes created Thu Sep 25 08:09:54 GMT 2025