1 /* $NetBSD: wdc_isapnp.c,v 1.27 2004/05/25 20:42:41 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 1.27 2004/05/25 20:42:41 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 wdc_channel *wdc_chanlist[1]; 64 struct wdc_channel wdc_channel; 65 struct ata_queue wdc_chqueue; 66 isa_chipset_tag_t sc_ic; 67 void *sc_ih; 68 int sc_drq; 69 }; 70 71 int wdc_isapnp_probe __P((struct device *, struct cfdata *, void *)); 72 void wdc_isapnp_attach __P((struct device *, struct device *, void *)); 73 74 CFATTACH_DECL(wdc_isapnp, sizeof(struct wdc_isapnp_softc), 75 wdc_isapnp_probe, wdc_isapnp_attach, NULL, NULL); 76 77 #ifdef notyet 78 static void wdc_isapnp_dma_setup __P((struct wdc_isapnp_softc *)); 79 static void wdc_isapnp_dma_start __P((void *, void *, size_t, int)); 80 static void wdc_isapnp_dma_finish __P((void *)); 81 #endif 82 83 int 84 wdc_isapnp_probe(parent, match, aux) 85 struct device *parent; 86 struct cfdata *match; 87 void *aux; 88 { 89 int pri, variant; 90 91 pri = isapnp_devmatch(aux, &isapnp_wdc_devinfo, &variant); 92 if (pri && variant > 0) 93 pri = 0; 94 return (pri); 95 } 96 97 void 98 wdc_isapnp_attach(parent, self, aux) 99 struct device *parent, *self; 100 void *aux; 101 { 102 struct wdc_isapnp_softc *sc = (void *)self; 103 struct isapnp_attach_args *ipa = aux; 104 int i; 105 106 if (ipa->ipa_nio != 2 || 107 ipa->ipa_nmem != 0 || 108 ipa->ipa_nmem32 != 0 || 109 ipa->ipa_nirq != 1 || 110 ipa->ipa_ndrq > 1) { 111 printf(": unexpected configuration\n"); 112 return; 113 } 114 115 if (isapnp_config(ipa->ipa_iot, ipa->ipa_memt, ipa)) { 116 printf(": couldn't map registers\n"); 117 return; 118 } 119 120 printf(": %s %s\n", ipa->ipa_devident, ipa->ipa_devclass); 121 122 sc->wdc_channel.cmd_iot = ipa->ipa_iot; 123 sc->wdc_channel.ctl_iot = ipa->ipa_iot; 124 /* 125 * An IDE controller can feed us the regions in any order. Pass 126 * them along with the 8-byte region in sc_ad.ioh, and the other 127 * (2 byte) region in auxioh. 128 */ 129 if (ipa->ipa_io[0].length == 8) { 130 sc->wdc_channel.cmd_baseioh = ipa->ipa_io[0].h; 131 sc->wdc_channel.ctl_ioh = ipa->ipa_io[1].h; 132 } else { 133 sc->wdc_channel.cmd_baseioh = ipa->ipa_io[1].h; 134 sc->wdc_channel.ctl_ioh = ipa->ipa_io[0].h; 135 } 136 137 for (i = 0; i < WDC_NREG; i++) { 138 if (bus_space_subregion(sc->wdc_channel.cmd_iot, 139 sc->wdc_channel.cmd_baseioh, i, i == 0 ? 4 : 1, 140 &sc->wdc_channel.cmd_iohs[i]) != 0) { 141 printf(": couldn't subregion registers\n"); 142 return; 143 } 144 } 145 wdc_init_shadow_regs(&sc->wdc_channel); 146 sc->wdc_channel.data32iot = sc->wdc_channel.cmd_iot; 147 sc->wdc_channel.data32ioh = sc->wdc_channel.cmd_iohs[0]; 148 149 sc->sc_ic = ipa->ipa_ic; 150 sc->sc_ih = isa_intr_establish(ipa->ipa_ic, ipa->ipa_irq[0].num, 151 ipa->ipa_irq[0].type, IPL_BIO, wdcintr, &sc->wdc_channel); 152 153 #ifdef notyet 154 if (ipa->ipa_ndrq > 0) { 155 sc->sc_drq = ipa->ipa_drq[0].num; 156 157 sc->sc_ad.cap |= WDC_CAPABILITY_DMA; 158 sc->sc_ad.dma_start = &wdc_isapnp_dma_start; 159 sc->sc_ad.dma_finish = &wdc_isapnp_dma_finish; 160 wdc_isapnp_dma_setup(sc); 161 } 162 #endif 163 sc->sc_wdcdev.cap |= WDC_CAPABILITY_DATA16 | WDC_CAPABILITY_DATA32; 164 sc->sc_wdcdev.PIO_cap = 0; 165 sc->wdc_chanlist[0] = &sc->wdc_channel; 166 sc->sc_wdcdev.channels = sc->wdc_chanlist; 167 sc->sc_wdcdev.nchannels = 1; 168 sc->wdc_channel.ch_channel = 0; 169 sc->wdc_channel.ch_wdc = &sc->sc_wdcdev; 170 sc->wdc_channel.ch_queue = &sc->wdc_chqueue; 171 172 wdcattach(&sc->wdc_channel); 173 } 174 175 #ifdef notyet 176 static void 177 wdc_isapnp_dma_setup(sc) 178 struct wdc_isapnp_softc *sc; 179 { 180 181 if (isa_dmamap_create(sc->sc_ic, sc->sc_drq, 182 MAXPHYS, BUS_DMA_NOWAIT|BUS_DMA_ALLOCNOW)) { 183 printf("%s: can't create map for drq %d\n", 184 sc->sc_wdcdev.sc_dev.dv_xname, sc->sc_drq); 185 sc->sc_wdcdev.cap &= ~WDC_CAPABILITY_DMA; 186 } 187 } 188 189 static void 190 wdc_isapnp_dma_start(scv, buf, size, read) 191 void *scv, *buf; 192 size_t size; 193 int read; 194 { 195 struct wdc_isapnp_softc *sc = scv; 196 197 isa_dmastart(sc->sc_ic, sc->sc_drq, buf, size, NULL, 198 (read ? DMAMODE_READ : DMAMODE_WRITE) | DMAMODE_DEMAND, 199 BUS_DMA_NOWAIT); 200 } 201 202 static void 203 wdc_isapnp_dma_finish(scv) 204 void *scv; 205 { 206 struct wdc_isapnp_softc *sc = scv; 207 208 isa_dmadone(sc->sc_ic, sc->sc_drq); 209 } 210 #endif 211