wdc_isapnp.c revision 1.28
1 /* $NetBSD: wdc_isapnp.c,v 1.28 2004/08/14 15:08:06 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 1998, 2003 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Charles M. Hannum and by Onno van der Linden. 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_isapnp.c,v 1.28 2004/08/14 15:08:06 thorpej Exp $"); 41 42 #include <sys/param.h> 43 #include <sys/systm.h> 44 #include <sys/device.h> 45 #include <sys/malloc.h> 46 47 #include <machine/bus.h> 48 #include <machine/intr.h> 49 50 #include <dev/isa/isavar.h> 51 #include <dev/isa/isadmavar.h> 52 53 #include <dev/isapnp/isapnpreg.h> 54 #include <dev/isapnp/isapnpvar.h> 55 #include <dev/isapnp/isapnpdevs.h> 56 57 #include <dev/ata/atavar.h> 58 #include <dev/ic/wdcreg.h> 59 #include <dev/ic/wdcvar.h> 60 61 struct wdc_isapnp_softc { 62 struct wdc_softc sc_wdcdev; 63 struct ata_channel *wdc_chanlist[1]; 64 struct ata_channel ata_channel; 65 struct ata_queue wdc_chqueue; 66 struct wdc_regs wdc_regs; 67 isa_chipset_tag_t sc_ic; 68 void *sc_ih; 69 int sc_drq; 70 }; 71 72 int wdc_isapnp_probe __P((struct device *, struct cfdata *, void *)); 73 void wdc_isapnp_attach __P((struct device *, struct device *, void *)); 74 75 CFATTACH_DECL(wdc_isapnp, sizeof(struct wdc_isapnp_softc), 76 wdc_isapnp_probe, wdc_isapnp_attach, NULL, NULL); 77 78 #ifdef notyet 79 static void wdc_isapnp_dma_setup __P((struct wdc_isapnp_softc *)); 80 static void wdc_isapnp_dma_start __P((void *, void *, size_t, int)); 81 static void wdc_isapnp_dma_finish __P((void *)); 82 #endif 83 84 int 85 wdc_isapnp_probe(parent, match, aux) 86 struct device *parent; 87 struct cfdata *match; 88 void *aux; 89 { 90 int pri, variant; 91 92 pri = isapnp_devmatch(aux, &isapnp_wdc_devinfo, &variant); 93 if (pri && variant > 0) 94 pri = 0; 95 return (pri); 96 } 97 98 void 99 wdc_isapnp_attach(parent, self, aux) 100 struct device *parent, *self; 101 void *aux; 102 { 103 struct wdc_isapnp_softc *sc = (void *)self; 104 struct wdc_regs *wdr; 105 struct isapnp_attach_args *ipa = aux; 106 int i; 107 108 if (ipa->ipa_nio != 2 || 109 ipa->ipa_nmem != 0 || 110 ipa->ipa_nmem32 != 0 || 111 ipa->ipa_nirq != 1 || 112 ipa->ipa_ndrq > 1) { 113 printf(": unexpected configuration\n"); 114 return; 115 } 116 117 if (isapnp_config(ipa->ipa_iot, ipa->ipa_memt, ipa)) { 118 printf(": couldn't map registers\n"); 119 return; 120 } 121 122 printf(": %s %s\n", ipa->ipa_devident, ipa->ipa_devclass); 123 124 sc->sc_wdcdev.regs = wdr = &sc->wdc_regs; 125 wdr->cmd_iot = ipa->ipa_iot; 126 wdr->ctl_iot = ipa->ipa_iot; 127 /* 128 * An IDE controller can feed us the regions in any order. Pass 129 * them along with the 8-byte region in sc_ad.ioh, and the other 130 * (2 byte) region in auxioh. 131 */ 132 if (ipa->ipa_io[0].length == 8) { 133 wdr->cmd_baseioh = ipa->ipa_io[0].h; 134 wdr->ctl_ioh = ipa->ipa_io[1].h; 135 } else { 136 wdr->cmd_baseioh = ipa->ipa_io[1].h; 137 wdr->ctl_ioh = ipa->ipa_io[0].h; 138 } 139 140 for (i = 0; i < WDC_NREG; i++) { 141 if (bus_space_subregion(wdr->cmd_iot, 142 wdr->cmd_baseioh, i, i == 0 ? 4 : 1, 143 &wdr->cmd_iohs[i]) != 0) { 144 printf(": couldn't subregion registers\n"); 145 return; 146 } 147 } 148 wdc_init_shadow_regs(&sc->ata_channel); 149 wdr->data32iot = wdr->cmd_iot; 150 wdr->data32ioh = wdr->cmd_iohs[0]; 151 152 sc->sc_ic = ipa->ipa_ic; 153 sc->sc_ih = isa_intr_establish(ipa->ipa_ic, ipa->ipa_irq[0].num, 154 ipa->ipa_irq[0].type, IPL_BIO, wdcintr, &sc->ata_channel); 155 156 #ifdef notyet 157 if (ipa->ipa_ndrq > 0) { 158 sc->sc_drq = ipa->ipa_drq[0].num; 159 160 sc->sc_ad.cap |= WDC_CAPABILITY_DMA; 161 sc->sc_ad.dma_start = &wdc_isapnp_dma_start; 162 sc->sc_ad.dma_finish = &wdc_isapnp_dma_finish; 163 wdc_isapnp_dma_setup(sc); 164 } 165 #endif 166 sc->sc_wdcdev.cap |= WDC_CAPABILITY_DATA16 | WDC_CAPABILITY_DATA32; 167 sc->sc_wdcdev.PIO_cap = 0; 168 sc->wdc_chanlist[0] = &sc->ata_channel; 169 sc->sc_wdcdev.channels = sc->wdc_chanlist; 170 sc->sc_wdcdev.nchannels = 1; 171 sc->ata_channel.ch_channel = 0; 172 sc->ata_channel.ch_wdc = &sc->sc_wdcdev; 173 sc->ata_channel.ch_queue = &sc->wdc_chqueue; 174 175 wdcattach(&sc->ata_channel); 176 } 177 178 #ifdef notyet 179 static void 180 wdc_isapnp_dma_setup(sc) 181 struct wdc_isapnp_softc *sc; 182 { 183 184 if (isa_dmamap_create(sc->sc_ic, sc->sc_drq, 185 MAXPHYS, BUS_DMA_NOWAIT|BUS_DMA_ALLOCNOW)) { 186 printf("%s: can't create map for drq %d\n", 187 sc->sc_wdcdev.sc_dev.dv_xname, sc->sc_drq); 188 sc->sc_wdcdev.cap &= ~WDC_CAPABILITY_DMA; 189 } 190 } 191 192 static void 193 wdc_isapnp_dma_start(scv, buf, size, read) 194 void *scv, *buf; 195 size_t size; 196 int read; 197 { 198 struct wdc_isapnp_softc *sc = scv; 199 200 isa_dmastart(sc->sc_ic, sc->sc_drq, buf, size, NULL, 201 (read ? DMAMODE_READ : DMAMODE_WRITE) | DMAMODE_DEMAND, 202 BUS_DMA_NOWAIT); 203 } 204 205 static void 206 wdc_isapnp_dma_finish(scv) 207 void *scv; 208 { 209 struct wdc_isapnp_softc *sc = scv; 210 211 isa_dmadone(sc->sc_ic, sc->sc_drq); 212 } 213 #endif 214
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