wdc_isapnp.c revision 1.37
1 /* $NetBSD: wdc_isapnp.c,v 1.37 2007/10/19 12:00:33 ad 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 1.37 2007/10/19 12:00:33 ad 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 <sys/bus.h> 48 #include <sys/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 static int wdc_isapnp_probe(struct device *, struct cfdata *, void *); 73 static void wdc_isapnp_attach(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(struct wdc_isapnp_softc *); 80 static void wdc_isapnp_dma_start(void *, void *, size_t, int); 81 static void wdc_isapnp_dma_finish(void *); 82 #endif 83 84 static int 85 wdc_isapnp_probe(struct device *parent, 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 static void 97 wdc_isapnp_attach(struct device *parent, struct device *self, 98 void *aux) 99 { 100 struct wdc_isapnp_softc *sc = device_private(self); 101 struct wdc_regs *wdr; 102 struct isapnp_attach_args *ipa = aux; 103 int i; 104 105 if (ipa->ipa_nio != 2 || 106 ipa->ipa_nmem != 0 || 107 ipa->ipa_nmem32 != 0 || 108 ipa->ipa_nirq != 1 || 109 ipa->ipa_ndrq > 1) { 110 printf(": unexpected configuration\n"); 111 return; 112 } 113 114 if (isapnp_config(ipa->ipa_iot, ipa->ipa_memt, ipa)) { 115 printf(": couldn't map registers\n"); 116 return; 117 } 118 119 printf(": %s %s\n", ipa->ipa_devident, ipa->ipa_devclass); 120 121 sc->sc_wdcdev.regs = wdr = &sc->wdc_regs; 122 wdr->cmd_iot = ipa->ipa_iot; 123 wdr->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 wdr->cmd_baseioh = ipa->ipa_io[0].h; 131 wdr->ctl_ioh = ipa->ipa_io[1].h; 132 } else { 133 wdr->cmd_baseioh = ipa->ipa_io[1].h; 134 wdr->ctl_ioh = ipa->ipa_io[0].h; 135 } 136 137 for (i = 0; i < WDC_NREG; i++) { 138 if (bus_space_subregion(wdr->cmd_iot, 139 wdr->cmd_baseioh, i, i == 0 ? 4 : 1, 140 &wdr->cmd_iohs[i]) != 0) { 141 printf(": couldn't subregion registers\n"); 142 return; 143 } 144 } 145 wdr->data32iot = wdr->cmd_iot; 146 wdr->data32ioh = wdr->cmd_iohs[0]; 147 148 sc->sc_ic = ipa->ipa_ic; 149 sc->sc_ih = isa_intr_establish(ipa->ipa_ic, ipa->ipa_irq[0].num, 150 ipa->ipa_irq[0].type, IPL_BIO, wdcintr, &sc->ata_channel); 151 152 #ifdef notyet 153 if (ipa->ipa_ndrq > 0) { 154 sc->sc_drq = ipa->ipa_drq[0].num; 155 156 sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_DMA; 157 sc->sc_wdcdev.dma_start = &wdc_isapnp_dma_start; 158 sc->sc_wdcdev.dma_finish = &wdc_isapnp_dma_finish; 159 wdc_isapnp_dma_setup(sc); 160 } 161 #endif 162 sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_DATA16 | ATAC_CAP_DATA32; 163 sc->sc_wdcdev.sc_atac.atac_pio_cap = 0; 164 sc->wdc_chanlist[0] = &sc->ata_channel; 165 sc->sc_wdcdev.sc_atac.atac_channels = sc->wdc_chanlist; 166 sc->sc_wdcdev.sc_atac.atac_nchannels = 1; 167 sc->ata_channel.ch_channel = 0; 168 sc->ata_channel.ch_atac = &sc->sc_wdcdev.sc_atac; 169 sc->ata_channel.ch_queue = &sc->wdc_chqueue; 170 sc->ata_channel.ch_ndrive = 2; 171 172 wdc_init_shadow_regs(&sc->ata_channel); 173 174 wdcattach(&sc->ata_channel); 175 } 176 177 #ifdef notyet 178 static void 179 wdc_isapnp_dma_setup(struct wdc_isapnp_softc *sc) 180 { 181 182 if (isa_dmamap_create(sc->sc_ic, sc->sc_drq, 183 MAXPHYS, BUS_DMA_NOWAIT|BUS_DMA_ALLOCNOW)) { 184 printf("%s: can't create map for drq %d\n", 185 sc->sc_wdcdev.sc_dev.dv_xname, sc->sc_drq); 186 sc->sc_wdcdev.sc_atac.atac_cap &= ~ATAC_CAP_DMA; 187 } 188 } 189 190 static void 191 wdc_isapnp_dma_start(void *scv, void *buf, size_t size, 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(void *scv) 202 { 203 struct wdc_isapnp_softc *sc = scv; 204 205 isa_dmadone(sc->sc_ic, sc->sc_drq); 206 } 207 #endif 208
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