wdc_isapnp.c revision 1.29
1/* $NetBSD: wdc_isapnp.c,v 1.29 2004/08/19 23:32:39 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 1.29 2004/08/19 23:32:39 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 61struct 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 72static int wdc_isapnp_probe(struct device *, struct cfdata *, void *); 73static void wdc_isapnp_attach(struct device *, struct device *, void *); 74 75CFATTACH_DECL(wdc_isapnp, sizeof(struct wdc_isapnp_softc), 76 wdc_isapnp_probe, wdc_isapnp_attach, NULL, NULL); 77 78#ifdef notyet 79static void wdc_isapnp_dma_setup(struct wdc_isapnp_softc *); 80static void wdc_isapnp_dma_start(void *, void *, size_t, int); 81static void wdc_isapnp_dma_finish(void *); 82#endif 83 84static int 85wdc_isapnp_probe(struct device *parent, struct cfdata *match, void *aux) 86{ 87 int pri, variant; 88 89 pri = isapnp_devmatch(aux, &isapnp_wdc_devinfo, &variant); 90 if (pri && variant > 0) 91 pri = 0; 92 return (pri); 93} 94 95static void 96wdc_isapnp_attach(struct device *parent, struct device *self, void *aux) 97{ 98 struct wdc_isapnp_softc *sc = (void *)self; 99 struct wdc_regs *wdr; 100 struct isapnp_attach_args *ipa = aux; 101 int i; 102 103 if (ipa->ipa_nio != 2 || 104 ipa->ipa_nmem != 0 || 105 ipa->ipa_nmem32 != 0 || 106 ipa->ipa_nirq != 1 || 107 ipa->ipa_ndrq > 1) { 108 printf(": unexpected configuration\n"); 109 return; 110 } 111 112 if (isapnp_config(ipa->ipa_iot, ipa->ipa_memt, ipa)) { 113 printf(": couldn't map registers\n"); 114 return; 115 } 116 117 printf(": %s %s\n", ipa->ipa_devident, ipa->ipa_devclass); 118 119 sc->sc_wdcdev.regs = wdr = &sc->wdc_regs; 120 wdr->cmd_iot = ipa->ipa_iot; 121 wdr->ctl_iot = ipa->ipa_iot; 122 /* 123 * An IDE controller can feed us the regions in any order. Pass 124 * them along with the 8-byte region in sc_ad.ioh, and the other 125 * (2 byte) region in auxioh. 126 */ 127 if (ipa->ipa_io[0].length == 8) { 128 wdr->cmd_baseioh = ipa->ipa_io[0].h; 129 wdr->ctl_ioh = ipa->ipa_io[1].h; 130 } else { 131 wdr->cmd_baseioh = ipa->ipa_io[1].h; 132 wdr->ctl_ioh = ipa->ipa_io[0].h; 133 } 134 135 for (i = 0; i < WDC_NREG; i++) { 136 if (bus_space_subregion(wdr->cmd_iot, 137 wdr->cmd_baseioh, i, i == 0 ? 4 : 1, 138 &wdr->cmd_iohs[i]) != 0) { 139 printf(": couldn't subregion registers\n"); 140 return; 141 } 142 } 143 wdc_init_shadow_regs(&sc->ata_channel); 144 wdr->data32iot = wdr->cmd_iot; 145 wdr->data32ioh = wdr->cmd_iohs[0]; 146 147 sc->sc_ic = ipa->ipa_ic; 148 sc->sc_ih = isa_intr_establish(ipa->ipa_ic, ipa->ipa_irq[0].num, 149 ipa->ipa_irq[0].type, IPL_BIO, wdcintr, &sc->ata_channel); 150 151#ifdef notyet 152 if (ipa->ipa_ndrq > 0) { 153 sc->sc_drq = ipa->ipa_drq[0].num; 154 155 sc->sc_ad.cap |= WDC_CAPABILITY_DMA; 156 sc->sc_ad.dma_start = &wdc_isapnp_dma_start; 157 sc->sc_ad.dma_finish = &wdc_isapnp_dma_finish; 158 wdc_isapnp_dma_setup(sc); 159 } 160#endif 161 sc->sc_wdcdev.cap |= WDC_CAPABILITY_DATA16 | WDC_CAPABILITY_DATA32; 162 sc->sc_wdcdev.PIO_cap = 0; 163 sc->wdc_chanlist[0] = &sc->ata_channel; 164 sc->sc_wdcdev.channels = sc->wdc_chanlist; 165 sc->sc_wdcdev.nchannels = 1; 166 sc->ata_channel.ch_channel = 0; 167 sc->ata_channel.ch_wdc = &sc->sc_wdcdev; 168 sc->ata_channel.ch_queue = &sc->wdc_chqueue; 169 170 wdcattach(&sc->ata_channel); 171} 172 173#ifdef notyet 174static void 175wdc_isapnp_dma_setup(struct wdc_isapnp_softc *sc) 176{ 177 178 if (isa_dmamap_create(sc->sc_ic, sc->sc_drq, 179 MAXPHYS, BUS_DMA_NOWAIT|BUS_DMA_ALLOCNOW)) { 180 printf("%s: can't create map for drq %d\n", 181 sc->sc_wdcdev.sc_dev.dv_xname, sc->sc_drq); 182 sc->sc_wdcdev.cap &= ~WDC_CAPABILITY_DMA; 183 } 184} 185 186static void 187wdc_isapnp_dma_start(void *scv, void *buf, size_t size, int read) 188{ 189 struct wdc_isapnp_softc *sc = scv; 190 191 isa_dmastart(sc->sc_ic, sc->sc_drq, buf, size, NULL, 192 (read ? DMAMODE_READ : DMAMODE_WRITE) | DMAMODE_DEMAND, 193 BUS_DMA_NOWAIT); 194} 195 196static void 197wdc_isapnp_dma_finish(void *scv) 198{ 199 struct wdc_isapnp_softc *sc = scv; 200 201 isa_dmadone(sc->sc_ic, sc->sc_drq); 202} 203#endif 204