wdc_buddha.c revision 1.3
1 /* $NetBSD: wdc_buddha.c,v 1.3 2008/03/18 20:46:35 cube 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 and Ignatios Souvatzis. 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/dev/zbusvar.h> 54 55 #include <dev/ata/atavar.h> 56 #include <dev/ic/wdcvar.h> 57 58 #define BUDDHA_MAX_CHANNELS 3 59 60 struct wdc_buddha_softc { 61 struct wdc_softc sc_wdcdev; 62 struct ata_channel *wdc_chanarray[BUDDHA_MAX_CHANNELS]; 63 struct ata_channel channels[BUDDHA_MAX_CHANNELS]; 64 struct bus_space_tag sc_iot; 65 struct isr sc_isr; 66 volatile char *ba; 67 }; 68 69 int wdc_buddha_probe(device_t, cfdata_t, void *); 70 void wdc_buddha_attach(device_t, device_t, void *); 71 int wdc_buddha_intr(void *); 72 73 CFATTACH_DECL_NEW(wdc_buddha, sizeof(struct wdc_buddha_softc), 74 wdc_buddha_probe, wdc_buddha_attach, NULL, NULL); 75 76 int 77 wdc_buddha_probe(device_t parent, cfdata_t cfp, void *aux) 78 { 79 struct zbus_args *zap; 80 81 zap = aux; 82 83 if (zap->manid != 4626) 84 return 0; 85 86 if ((zap->prodid != 0) && /* Buddha */ 87 (zap->prodid != 42)) /* Catweasel */ 88 return 0; 89 90 return 1; 91 } 92 93 void 94 wdc_buddha_attach(device_t parent, device_t self, void *aux) 95 { 96 struct wdc_buddha_softc *sc; 97 struct zbus_args *zap; 98 int nchannels; 99 int ch; 100 101 sc = device_private(self); 102 sc->sc_wdcdev.sc_atac.atac_dev = self; 103 zap = aux; 104 105 sc->ba = zap->va; 106 107 sc->sc_iot.base = (bus_addr_t)sc->ba; 108 sc->sc_iot.absm = &amiga_bus_stride_4swap; 109 110 nchannels = 2; 111 if (zap->prodid == 42) { 112 aprint_normal(": Catweasel Z2\n"); 113 nchannels = 3; 114 } else if (zap->serno == 0) 115 aprint_normal(": Buddha\n"); 116 else 117 aprint_normal(": Buddha Flash\n"); 118 119 /* XXX pio mode setting not implemented yet. */ 120 sc->sc_wdcdev.sc_atac.atac_cap = ATAC_CAP_DATA16; 121 sc->sc_wdcdev.sc_atac.atac_pio_cap = 0; 122 sc->sc_wdcdev.sc_atac.atac_channels = sc->wdc_chanarray; 123 sc->sc_wdcdev.sc_atac.atac_nchannels = nchannels; 124 125 wdc_allocate_regs(&sc->sc_wdcdev); 126 127 for (ch = 0; ch < nchannels; ch++) { 128 struct ata_channel *cp; 129 struct wdc_regs *wdr; 130 int i; 131 132 cp = &sc->channels[ch]; 133 sc->wdc_chanarray[ch] = cp; 134 135 cp->ch_channel = ch; 136 cp->ch_atac = &sc->sc_wdcdev.sc_atac; 137 cp->ch_queue = 138 malloc(sizeof(struct ata_queue), M_DEVBUF, M_NOWAIT); 139 if (cp->ch_queue == NULL) { 140 aprint_error_dev(self, 141 "can't allocate memory for command queue\n"); 142 return; 143 } 144 cp->ch_ndrive = 2; 145 146 /* 147 * XXX According to the Buddha docs, we should use a method 148 * array that adds 0x40 to the address for byte accesses, to 149 * get the slow timing for command accesses, and the 0x00 150 * offset for the word (fast) accesses. This will be 151 * reconsidered when implementing setting the timing. 152 * 153 * XXX We also could consider to abuse the 32bit capability, or 154 * 32bit accesses to the words (which will read in two words) 155 * for better performance. 156 * -is 157 */ 158 wdr = CHAN_TO_WDC_REGS(cp); 159 160 wdr->cmd_iot = &sc->sc_iot; 161 if (bus_space_map(wdr->cmd_iot, 0x210+ch*0x80, 8, 0, 162 &wdr->cmd_baseioh)) { 163 aprint_error_dev(self, "couldn't map cmd registers\n"); 164 return; 165 } 166 167 wdr->ctl_iot = &sc->sc_iot; 168 if (bus_space_map(wdr->ctl_iot, 0x250+ch*0x80, 2, 0, 169 &wdr->ctl_ioh)) { 170 bus_space_unmap(wdr->cmd_iot, wdr->cmd_baseioh, 8); 171 aprint_error_dev(self, "couldn't map ctl registers\n"); 172 return; 173 } 174 175 for (i = 0; i < WDC_NREG; i++) { 176 if (bus_space_subregion(wdr->cmd_iot, wdr->cmd_baseioh, 177 i, i == 0 ? 4 : 1, &wdr->cmd_iohs[i]) != 0) { 178 aprint_error_dev(self, 179 "couldn't subregion cmd regs\n"); 180 return; 181 } 182 } 183 184 wdc_init_shadow_regs(cp); 185 wdcattach(cp); 186 } 187 188 sc->sc_isr.isr_intr = wdc_buddha_intr; 189 sc->sc_isr.isr_arg = sc; 190 sc->sc_isr.isr_ipl = 2; 191 add_isr (&sc->sc_isr); 192 sc->ba[0xfc0] = 0; /* enable interrupts */ 193 } 194 195 int 196 wdc_buddha_intr(void *arg) 197 { 198 struct wdc_buddha_softc *sc = (struct wdc_buddha_softc *)arg; 199 int nchannels, i, ret; 200 volatile char *p; 201 202 ret = 0; 203 nchannels = sc->sc_wdcdev.sc_atac.atac_nchannels; 204 p = sc->ba; 205 206 for (i=0; i<nchannels; i++) { 207 if (p[0xf00 + 0x40*i] & 0x80) { 208 wdcintr(&sc->channels[i]); 209 ret = 1; 210 } 211 } 212 213 return ret; 214 } 215
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