wdc_amiga.c revision 1.23
1 /* $NetBSD: wdc_amiga.c,v 1.23 2004/08/20 06:39:38 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 2000, 2003 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 1.23 2004/08/20 06:39:38 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 ata_channel *sc_chanlist[1]; 65 struct ata_channel sc_channel; 66 struct ata_queue sc_chqueue; 67 struct wdc_regs sc_wdc_regs; 68 struct isr sc_isr; 69 volatile u_char *sc_intreg; 70 struct bus_space_tag cmd_iot; 71 struct bus_space_tag ctl_iot; 72 char sc_a1200; 73 }; 74 75 int wdc_amiga_probe(struct device *, struct cfdata *, void *); 76 void wdc_amiga_attach(struct device *, struct device *, void *); 77 int wdc_amiga_intr(void *); 78 79 CFATTACH_DECL(wdc_amiga, sizeof(struct wdc_amiga_softc), 80 wdc_amiga_probe, wdc_amiga_attach, NULL, NULL); 81 82 int 83 wdc_amiga_probe(struct device *parent, struct cfdata *cfp, void *aux) 84 { 85 if ((!is_a4000() && !is_a1200()) || !matchname(aux, "wdc")) 86 return(0); 87 return 1; 88 } 89 90 void 91 wdc_amiga_attach(struct device *parent, struct device *self, void *aux) 92 { 93 struct wdc_amiga_softc *sc = (void *)self; 94 struct wdc_regs *wdr; 95 int i; 96 97 printf("\n"); 98 99 sc->sc_wdcdev.regs = wdr = &sc->sc_wdc_regs; 100 101 if (is_a4000()) { 102 sc->cmd_iot.base = (u_long)ztwomap(0xdd2020 + 2); 103 sc->sc_intreg = (u_char *)ztwomap(0xdd2020 + 0x1000); 104 sc->sc_a1200 = 0; 105 } else { 106 sc->cmd_iot.base = (u_long) ztwomap(0xda0000 + 2); 107 sc->ctl_iot.base = (u_long) ztwomap(0xda4000); 108 gayle_init(); 109 sc->sc_intreg = &gayle.intreq; 110 sc->sc_a1200 = 1; 111 } 112 sc->cmd_iot.absm = sc->ctl_iot.absm = &amiga_bus_stride_4swap; 113 wdr->cmd_iot = &sc->cmd_iot; 114 wdr->ctl_iot = &sc->ctl_iot; 115 116 if (bus_space_map(wdr->cmd_iot, 0, 0x40, 0, 117 &wdr->cmd_baseioh)) { 118 printf("%s: couldn't map registers\n", 119 sc->sc_wdcdev.sc_atac.atac_dev.dv_xname); 120 return; 121 } 122 123 for (i = 0; i < WDC_NREG; i++) { 124 if (bus_space_subregion(wdr->cmd_iot, 125 wdr->cmd_baseioh, i, i == 0 ? 4 : 1, 126 &wdr->cmd_iohs[i]) != 0) { 127 128 bus_space_unmap(wdr->cmd_iot, 129 wdr->cmd_baseioh, 0x40); 130 printf("%s: couldn't map registers\n", 131 sc->sc_wdcdev.sc_atac.atac_dev.dv_xname); 132 return; 133 } 134 } 135 wdc_init_shadow_regs(&sc->sc_channel); 136 137 if (sc->sc_a1200) 138 wdr->ctl_ioh = sc->ctl_iot.base; 139 else if (bus_space_subregion(wdr->cmd_iot, 140 wdr->cmd_baseioh, 0x406, 1, &wdr->ctl_ioh)) 141 return; 142 143 sc->sc_wdcdev.sc_atac.atac_cap = ATAC_CAP_DATA16; 144 sc->sc_wdcdev.sc_atac.atac_pio_cap = 0; 145 sc->sc_chanlist[0] = &sc->sc_channel; 146 sc->sc_wdcdev.sc_atac.atac_channels = sc->sc_chanlist; 147 sc->sc_wdcdev.sc_atac.atac_nchannels = 1; 148 sc->sc_channel.ch_channel = 0; 149 sc->sc_channel.ch_atac = &sc->sc_wdcdev.sc_atac; 150 sc->sc_channel.ch_queue = &sc->sc_chqueue; 151 sc->sc_isr.isr_intr = wdc_amiga_intr; 152 sc->sc_isr.isr_arg = sc; 153 sc->sc_isr.isr_ipl = 2; 154 add_isr (&sc->sc_isr); 155 156 if (sc->sc_a1200) 157 gayle.intena |= GAYLE_INT_IDE; 158 159 wdcattach(&sc->sc_channel); 160 } 161 162 int 163 wdc_amiga_intr(void *arg) 164 { 165 struct wdc_amiga_softc *sc = (struct wdc_amiga_softc *)arg; 166 u_char intreq = *sc->sc_intreg; 167 int ret = 0; 168 169 if (intreq & GAYLE_INT_IDE) { 170 if (sc->sc_a1200) 171 gayle.intreq = 0x7c | (intreq & 0x03); 172 ret = wdcintr(&sc->sc_channel); 173 } 174 175 return ret; 176 } 177
Indexes created Thu Sep 25 16:09:42 GMT 2025