wdc_acafh.c revision 1.7
1 /* $NetBSD: wdc_acafh.c,v 1.7 2023/12/20 00:40:42 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 2000, 2003, 2013 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Radoslaw Kujawa. 9 * 10 * This code is derived from software contributed to The NetBSD Foundation 11 * by Michael L. Hitch. 12 * 13 * Redistribution and use in source and binary forms, with or without 14 * modification, are permitted provided that the following conditions 15 * are met: 16 * 1. Redistributions of source code must retain the above copyright 17 * notice, this list of conditions and the following disclaimer. 18 * 2. Redistributions in binary form must reproduce the above copyright 19 * notice, this list of conditions and the following disclaimer in the 20 * documentation and/or other materials provided with the distribution. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 23 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 24 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 25 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 26 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 32 * POSSIBILITY OF SUCH DAMAGE. 33 */ 34 35 /* 36 * ACA500 CF (IDE) controller driver. 37 * 38 * The hardware emulates original A600/A1200 Gayle interface. However, it has 39 * two channels, second channel placed instead of ctl registers (so software 40 * reset of the bus is not possible, duh). There are no slave devices. 41 */ 42 43 #include <sys/cdefs.h> 44 __KERNEL_RCSID(0, "$NetBSD: wdc_acafh.c,v 1.7 2023/12/20 00:40:42 thorpej Exp $"); 45 46 #include <sys/types.h> 47 #include <sys/param.h> 48 #include <sys/systm.h> 49 #include <sys/device.h> 50 #include <sys/bus.h> 51 52 #include <machine/cpu.h> 53 #include <machine/intr.h> 54 #include <sys/bswap.h> 55 56 #include <amiga/amiga/cia.h> 57 #include <amiga/amiga/custom.h> 58 #include <amiga/amiga/device.h> 59 #include <amiga/amiga/gayle.h> 60 #include <amiga/dev/zbusvar.h> 61 #include <amiga/dev/acafhvar.h> 62 #include <amiga/dev/acafhreg.h> 63 64 #include <dev/ata/atavar.h> 65 #include <dev/ic/wdcvar.h> 66 67 #define WDC_ACAFH_SLOTS 2 68 69 struct wdc_acafh_slot { 70 struct ata_channel channel; 71 struct wdc_regs wdr; 72 }; 73 74 struct wdc_acafh_softc { 75 struct wdc_softc sc_wdcdev; 76 struct ata_channel *sc_chanlist[WDC_ACAFH_SLOTS]; 77 struct wdc_acafh_slot sc_slots[WDC_ACAFH_SLOTS]; 78 79 struct isr sc_isr; 80 81 struct bus_space_tag cmd_iot; 82 83 struct acafh_softc *aca_sc; 84 }; 85 86 int wdc_acafh_match(device_t, cfdata_t, void *); 87 void wdc_acafh_attach(device_t, device_t, void *); 88 int wdc_acafh_intr(void *); 89 static void wdc_acafh_attach_channel(struct wdc_acafh_softc *, int); 90 static void wdc_acafh_map_channel(struct wdc_acafh_softc *, int); 91 92 CFATTACH_DECL_NEW(wdc_acafh, sizeof(struct wdc_acafh_softc), 93 wdc_acafh_match, wdc_acafh_attach, NULL, NULL); 94 95 int 96 wdc_acafh_match(device_t parent, cfdata_t cfp, void *aux) 97 { 98 struct acafhbus_attach_args *aap = aux; 99 100 if (strcmp(aap->aaa_name, "wdc_acafh") != 0) 101 return(0); 102 return 1; 103 } 104 105 void 106 wdc_acafh_attach(device_t parent, device_t self, void *aux) 107 { 108 struct wdc_acafh_softc *sc = device_private(self); 109 int i; 110 111 aprint_normal(": ACA500 CompactFlash interface\n"); 112 sc->aca_sc = device_private(parent); 113 114 gayle_init(); 115 116 /* XXX: take addr from attach args? */ 117 sc->cmd_iot.base = (u_long) ztwomap(GAYLE_IDE_BASE + 2); 118 sc->cmd_iot.absm = &amiga_bus_stride_4swap; 119 120 sc->sc_wdcdev.sc_atac.atac_dev = self; 121 sc->sc_wdcdev.sc_atac.atac_cap = ATAC_CAP_DATA16; 122 sc->sc_wdcdev.sc_atac.atac_pio_cap = 0; 123 sc->sc_wdcdev.sc_atac.atac_channels = sc->sc_chanlist; 124 sc->sc_wdcdev.sc_atac.atac_nchannels = WDC_ACAFH_SLOTS; 125 sc->sc_wdcdev.wdc_maxdrives = 2; 126 sc->sc_wdcdev.cap = WDC_CAPABILITY_NO_AUXCTL; 127 128 wdc_allocate_regs(&sc->sc_wdcdev); 129 for (i = 0; i < WDC_ACAFH_SLOTS; i++) { 130 wdc_acafh_attach_channel(sc, i); 131 } 132 133 sc->sc_isr.isr_intr = wdc_acafh_intr; 134 sc->sc_isr.isr_arg = sc; 135 sc->sc_isr.isr_ipl = 2; 136 add_isr (&sc->sc_isr); 137 138 gayle_intr_enable_set(GAYLE_INT_IDE); 139 140 } 141 142 void 143 wdc_acafh_attach_channel(struct wdc_acafh_softc *sc, int chnum) 144 { 145 #ifdef WDC_ACAFH_DEBUG 146 device_t self; 147 148 self = sc->sc_wdcdev.sc_atac.atac_dev; 149 #endif /* WDC_ACAFH_DEBUG */ 150 151 sc->sc_chanlist[chnum] = &sc->sc_slots[chnum].channel; 152 memset(&sc->sc_slots[chnum],0,sizeof(struct wdc_acafh_slot)); 153 sc->sc_slots[chnum].channel.ch_channel = chnum; 154 sc->sc_slots[chnum].channel.ch_atac = &sc->sc_wdcdev.sc_atac; 155 156 wdc_acafh_map_channel(sc, chnum); 157 158 wdc_init_shadow_regs(CHAN_TO_WDC_REGS(&sc->sc_slots[chnum].channel)); 159 wdcattach(&sc->sc_slots[chnum].channel); 160 161 #ifdef WDC_ACAFH_DEBUG 162 aprint_normal_dev(self, "done init for channel %d\n", chnum); 163 #endif /* WDC_ACAFH_DEBUG */ 164 } 165 166 void 167 wdc_acafh_map_channel(struct wdc_acafh_softc *sc, int chnum) 168 { 169 struct wdc_regs *wdr; 170 bus_addr_t off; 171 device_t self; 172 int i; 173 174 self = sc->sc_wdcdev.sc_atac.atac_dev; 175 176 wdr = CHAN_TO_WDC_REGS(&sc->sc_slots[chnum].channel); 177 wdr->cmd_iot = &sc->cmd_iot; 178 179 if (chnum == 0) 180 off = 0; 181 else 182 off = 0x400; 183 184 if (bus_space_map(wdr->cmd_iot, off, 0x40, 0, 185 &wdr->cmd_baseioh)) { 186 aprint_error_dev(self, "couldn't map regs\n"); 187 return; 188 } 189 190 for (i = 0; i < WDC_NREG; i++) { 191 if (bus_space_subregion(wdr->cmd_iot, 192 wdr->cmd_baseioh, i, i == 0 ? 4 : 1, 193 &wdr->cmd_iohs[i]) != 0) { 194 195 bus_space_unmap(wdr->cmd_iot, 196 wdr->cmd_baseioh, 0x40); 197 aprint_error_dev(self, "couldn't map regs\n"); 198 return; 199 } 200 } 201 202 } 203 204 int 205 wdc_acafh_intr(void *arg) 206 { 207 struct wdc_acafh_softc *sc; 208 uint8_t intreq; 209 int ret; 210 211 sc = (struct wdc_acafh_softc *) arg; 212 intreq = gayle_intr_status(); 213 ret = 0; 214 215 if (intreq & GAYLE_INT_IDE) { 216 if (acafh_cf_intr_status(sc->aca_sc, 1) == 1) { 217 ret = wdcintr(&sc->sc_slots[1].channel); 218 } 219 if (acafh_cf_intr_status(sc->aca_sc, 0) == 1) { 220 ret = wdcintr(&sc->sc_slots[0].channel); 221 } 222 gayle_intr_ack(0x7C | (intreq & GAYLE_INT_IDEACK)); 223 } 224 225 return ret; 226 } 227 228
Indexes created Tue Sep 30 20:09:53 GMT 2025