wdc_isapnp.c revision 1.17
1 /* $NetBSD: wdc_isapnp.c,v 1.17 2002/09/30 21:31:54 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 1998 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 1.17 2002/09/30 21:31:54 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 channel_softc *wdc_chanptr; 64 struct channel_softc wdc_channel; 65 isa_chipset_tag_t sc_ic; 66 void *sc_ih; 67 int sc_drq; 68 }; 69 70 int wdc_isapnp_probe __P((struct device *, struct cfdata *, void *)); 71 void wdc_isapnp_attach __P((struct device *, struct device *, void *)); 72 73 CFATTACH_DECL(wdc_isapnp, sizeof(struct wdc_isapnp_softc), 74 wdc_isapnp_probe, wdc_isapnp_attach, NULL, NULL) 75 76 #ifdef notyet 77 static void wdc_isapnp_dma_setup __P((struct wdc_isapnp_softc *)); 78 static void wdc_isapnp_dma_start __P((void *, void *, size_t, int)); 79 static void wdc_isapnp_dma_finish __P((void *)); 80 #endif 81 82 int 83 wdc_isapnp_probe(parent, match, aux) 84 struct device *parent; 85 struct cfdata *match; 86 void *aux; 87 { 88 int pri, variant; 89 90 pri = isapnp_devmatch(aux, &isapnp_wdc_devinfo, &variant); 91 if (pri && variant > 0) 92 pri = 0; 93 return (pri); 94 } 95 96 void 97 wdc_isapnp_attach(parent, self, aux) 98 struct device *parent, *self; 99 void *aux; 100 { 101 struct wdc_isapnp_softc *sc = (void *)self; 102 struct isapnp_attach_args *ipa = aux; 103 104 printf("\n"); 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("%s: unexpected configuration\n", 112 sc->sc_wdcdev.sc_dev.dv_xname); 113 return; 114 } 115 116 if (isapnp_config(ipa->ipa_iot, ipa->ipa_memt, ipa)) { 117 printf("%s: couldn't map registers\n", 118 sc->sc_wdcdev.sc_dev.dv_xname); 119 return; 120 } 121 122 printf("%s: %s %s\n", sc->sc_wdcdev.sc_dev.dv_xname, ipa->ipa_devident, 123 ipa->ipa_devclass); 124 125 sc->wdc_channel.cmd_iot = ipa->ipa_iot; 126 sc->wdc_channel.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 sc->wdc_channel.cmd_ioh = ipa->ipa_io[0].h; 134 sc->wdc_channel.ctl_ioh = ipa->ipa_io[1].h; 135 } else { 136 sc->wdc_channel.cmd_ioh = ipa->ipa_io[1].h; 137 sc->wdc_channel.ctl_ioh = ipa->ipa_io[0].h; 138 } 139 sc->wdc_channel.data32iot = sc->wdc_channel.cmd_iot; 140 sc->wdc_channel.data32ioh = sc->wdc_channel.cmd_ioh; 141 142 sc->sc_ic = ipa->ipa_ic; 143 sc->sc_ih = isa_intr_establish(ipa->ipa_ic, ipa->ipa_irq[0].num, 144 ipa->ipa_irq[0].type, IPL_BIO, wdcintr, &sc->wdc_channel); 145 146 #ifdef notyet 147 if (ipa->ipa_ndrq > 0) { 148 sc->sc_drq = ipa->ipa_drq[0].num; 149 150 sc->sc_ad.cap |= WDC_CAPABILITY_DMA; 151 sc->sc_ad.dma_start = &wdc_isapnp_dma_start; 152 sc->sc_ad.dma_finish = &wdc_isapnp_dma_finish; 153 wdc_isapnp_dma_setup(sc); 154 } 155 #endif 156 sc->sc_wdcdev.cap |= WDC_CAPABILITY_DATA16 | WDC_CAPABILITY_DATA32; 157 sc->sc_wdcdev.PIO_cap = 0; 158 sc->wdc_chanptr = &sc->wdc_channel; 159 sc->sc_wdcdev.channels = &sc->wdc_chanptr; 160 sc->sc_wdcdev.nchannels = 1; 161 sc->wdc_channel.channel = 0; 162 sc->wdc_channel.wdc = &sc->sc_wdcdev; 163 sc->wdc_channel.ch_queue = malloc(sizeof(struct channel_queue), 164 M_DEVBUF, M_NOWAIT); 165 if (sc->wdc_channel.ch_queue == NULL) { 166 printf("%s: can't allocate memory for command queue", 167 sc->sc_wdcdev.sc_dev.dv_xname); 168 return; 169 } 170 wdcattach(&sc->wdc_channel); 171 } 172 173 #ifdef notyet 174 static void 175 wdc_isapnp_dma_setup(sc) 176 struct wdc_isapnp_softc *sc; 177 { 178 179 if (isa_dmamap_create(sc->sc_ic, sc->sc_drq, 180 MAXPHYS, BUS_DMA_NOWAIT|BUS_DMA_ALLOCNOW)) { 181 printf("%s: can't create map for drq %d\n", 182 sc->sc_wdcdev.sc_dev.dv_xname, sc->sc_drq); 183 sc->sc_wdcdev.cap &= ~WDC_CAPABILITY_DMA; 184 } 185 } 186 187 static void 188 wdc_isapnp_dma_start(scv, buf, size, read) 189 void *scv, *buf; 190 size_t size; 191 int read; 192 { 193 struct wdc_isapnp_softc *sc = scv; 194 195 isa_dmastart(sc->sc_ic, sc->sc_drq, buf, size, NULL, 196 (read ? DMAMODE_READ : DMAMODE_WRITE) | DMAMODE_DEMAND, 197 BUS_DMA_NOWAIT); 198 } 199 200 static void 201 wdc_isapnp_dma_finish(scv) 202 void *scv; 203 { 204 struct wdc_isapnp_softc *sc = scv; 205 206 isa_dmadone(sc->sc_ic, sc->sc_drq); 207 } 208 #endif 209
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