wdc_acafh.c revision 1.3
1 /* $NetBSD: wdc_acafh.c,v 1.3 2014/01/03 00:33:06 rkujawa 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 1.3 2014/01/03 00:33:06 rkujawa Exp $"); 45 46 #include <sys/types.h> 47 #include <sys/param.h> 48 #include <sys/systm.h> 49 #include <sys/malloc.h> 50 #include <sys/device.h> 51 #include <sys/bus.h> 52 53 #include <machine/cpu.h> 54 #include <machine/intr.h> 55 #include <sys/bswap.h> 56 57 #include <amiga/amiga/cia.h> 58 #include <amiga/amiga/custom.h> 59 #include <amiga/amiga/device.h> 60 #include <amiga/amiga/gayle.h> 61 #include <amiga/dev/zbusvar.h> 62 #include <amiga/dev/acafhvar.h> 63 #include <amiga/dev/acafhreg.h> 64 65 #include <dev/ata/atavar.h> 66 #include <dev/ic/wdcvar.h> 67 68 #define WDC_ACAFH_SLOTS 2 69 70 struct wdc_acafh_slot { 71 struct ata_channel channel; 72 struct ata_queue chqueue; 73 struct wdc_regs wdr; 74 }; 75 76 struct wdc_acafh_softc { 77 device_t sc_dev; 78 79 struct wdc_softc sc_wdcdev; 80 struct ata_channel *sc_chanlist[WDC_ACAFH_SLOTS]; 81 struct wdc_acafh_slot sc_slots[WDC_ACAFH_SLOTS]; 82 83 struct isr sc_isr; 84 85 struct bus_space_tag cmd_iot; 86 87 struct acafh_softc *aca_sc; 88 }; 89 90 int wdc_acafh_match(device_t, cfdata_t, void *); 91 void wdc_acafh_attach(device_t, device_t, void *); 92 int wdc_acafh_intr(void *); 93 static void wdc_acafh_attach_channel(struct wdc_acafh_softc *, int); 94 static void wdc_acafh_map_channel(struct wdc_acafh_softc *, int); 95 96 CFATTACH_DECL_NEW(wdc_acafh, sizeof(struct wdc_acafh_softc), 97 wdc_acafh_match, wdc_acafh_attach, NULL, NULL); 98 99 int 100 wdc_acafh_match(device_t parent, cfdata_t cfp, void *aux) 101 { 102 struct acafhbus_attach_args *aap = aux; 103 104 if (strcmp(aap->aaa_name, "wdc_acafh") != 0) 105 return(0); 106 return 1; 107 } 108 109 void 110 wdc_acafh_attach(device_t parent, device_t self, void *aux) 111 { 112 struct wdc_acafh_softc *sc = device_private(self); 113 int i; 114 115 aprint_normal(": ACA500 CompactFlash interface\n"); 116 117 sc->sc_dev = device_private(self); 118 sc->aca_sc = device_private(parent); 119 120 gayle_init(); 121 122 /* XXX: take addr from attach args? */ 123 sc->cmd_iot.base = (u_long) ztwomap(GAYLE_IDE_BASE + 2); 124 sc->cmd_iot.absm = &amiga_bus_stride_4swap; 125 126 sc->sc_wdcdev.sc_atac.atac_dev = self; 127 sc->sc_wdcdev.sc_atac.atac_cap = ATAC_CAP_DATA16; 128 sc->sc_wdcdev.sc_atac.atac_pio_cap = 0; 129 sc->sc_wdcdev.sc_atac.atac_channels = sc->sc_chanlist; 130 sc->sc_wdcdev.sc_atac.atac_nchannels = WDC_ACAFH_SLOTS; 131 sc->sc_wdcdev.wdc_maxdrives = 2; 132 sc->sc_wdcdev.cap = WDC_CAPABILITY_NO_AUXCTL; 133 134 wdc_allocate_regs(&sc->sc_wdcdev); 135 for (i = 0; i < WDC_ACAFH_SLOTS; i++) { 136 wdc_acafh_attach_channel(sc, i); 137 } 138 139 sc->sc_isr.isr_intr = wdc_acafh_intr; 140 sc->sc_isr.isr_arg = sc; 141 sc->sc_isr.isr_ipl = 2; 142 add_isr (&sc->sc_isr); 143 144 gayle_intr_enable_set(GAYLE_INT_IDE); 145 146 } 147 148 void 149 wdc_acafh_attach_channel(struct wdc_acafh_softc *sc, int chnum) 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 sc->sc_slots[chnum].channel.ch_queue = &sc->sc_slots[chnum].chqueue; 156 157 wdc_acafh_map_channel(sc, chnum); 158 159 wdc_init_shadow_regs(&sc->sc_slots[chnum].channel); 160 wdcattach(&sc->sc_slots[chnum].channel); 161 162 #ifdef WDC_ACAFH_DEBUG 163 aprint_normal_dev(sc->sc_dev, "done init for channel %d\n", chnum); 164 #endif /* WDC_ACAFH_DEBUG */ 165 166 } 167 168 void 169 wdc_acafh_map_channel(struct wdc_acafh_softc *sc, int chnum) 170 { 171 struct wdc_regs *wdr; 172 int i; 173 bus_addr_t off; 174 175 wdr = CHAN_TO_WDC_REGS(&sc->sc_slots[chnum].channel); 176 wdr->cmd_iot = &sc->cmd_iot; 177 178 if (chnum == 0) 179 off = 0; 180 else 181 off = 0x400; 182 183 if (bus_space_map(wdr->cmd_iot, off, 0x40, 0, 184 &wdr->cmd_baseioh)) { 185 aprint_error_dev(sc->sc_dev, "couldn't map regs\n"); 186 return; 187 } 188 189 for (i = 0; i < WDC_NREG; i++) { 190 if (bus_space_subregion(wdr->cmd_iot, 191 wdr->cmd_baseioh, i, i == 0 ? 4 : 1, 192 &wdr->cmd_iohs[i]) != 0) { 193 194 bus_space_unmap(wdr->cmd_iot, 195 wdr->cmd_baseioh, 0x40); 196 aprint_error_dev(sc->sc_dev, "couldn't map regs\n"); 197 return; 198 } 199 } 200 201 } 202 203 int 204 wdc_acafh_intr(void *arg) 205 { 206 struct wdc_acafh_softc *sc; 207 uint8_t intreq; 208 int ret; 209 210 sc = (struct wdc_acafh_softc *) arg; 211 intreq = gayle_intr_status(); 212 ret = 0; 213 214 if (intreq & GAYLE_INT_IDE) { 215 if (acafh_cf_intr_status(sc->aca_sc, 1) == 1) { 216 ret = wdcintr(&sc->sc_slots[1].channel); 217 } 218 if (acafh_cf_intr_status(sc->aca_sc, 0) == 1) { 219 ret = wdcintr(&sc->sc_slots[0].channel); 220 } 221 gayle_intr_ack(0x7C | (intreq & GAYLE_INT_IDEACK)); 222 } 223 224 return ret; 225 } 226 227
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