1 /* $NetBSD: wdc_isapnp.c,v 1.45 2022/09/25 17:19:05 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 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 __KERNEL_RCSID(0, "$NetBSD: wdc_isapnp.c,v 1.45 2022/09/25 17:19:05 thorpej Exp $"); 34 35 #include <sys/param.h> 36 #include <sys/systm.h> 37 #include <sys/device.h> 38 39 #include <sys/bus.h> 40 #include <sys/intr.h> 41 42 #include <dev/isa/isavar.h> 43 #include <dev/isa/isadmavar.h> 44 45 #include <dev/isapnp/isapnpreg.h> 46 #include <dev/isapnp/isapnpvar.h> 47 #include <dev/isapnp/isapnpdevs.h> 48 49 #include <dev/ata/atavar.h> 50 #include <dev/ic/wdcreg.h> 51 #include <dev/ic/wdcvar.h> 52 53 struct wdc_isapnp_softc { 54 struct wdc_softc sc_wdcdev; 55 struct ata_channel *wdc_chanlist[1]; 56 struct ata_channel ata_channel; 57 struct wdc_regs wdc_regs; 58 isa_chipset_tag_t sc_ic; 59 void *sc_ih; 60 int sc_drq; 61 }; 62 63 static int wdc_isapnp_probe(device_t, cfdata_t, void *); 64 static void wdc_isapnp_attach(device_t, device_t, void *); 65 66 CFATTACH_DECL_NEW(wdc_isapnp, sizeof(struct wdc_isapnp_softc), 67 wdc_isapnp_probe, wdc_isapnp_attach, NULL, NULL); 68 69 #ifdef notyet 70 static void wdc_isapnp_dma_setup(struct wdc_isapnp_softc *); 71 static void wdc_isapnp_dma_start(void *, void *, size_t, int); 72 static void wdc_isapnp_dma_finish(void *); 73 #endif 74 75 static int 76 wdc_isapnp_probe(device_t parent, cfdata_t match, void *aux) 77 { 78 int pri, variant; 79 80 pri = isapnp_devmatch(aux, &isapnp_wdc_devinfo, &variant); 81 if (pri && variant > 0) 82 pri = 0; 83 return (pri); 84 } 85 86 static void 87 wdc_isapnp_attach(device_t parent, device_t self, void *aux) 88 { 89 struct wdc_isapnp_softc *sc = device_private(self); 90 struct wdc_regs *wdr; 91 struct isapnp_attach_args *ipa = aux; 92 int i; 93 94 if (ipa->ipa_nio != 2 || 95 ipa->ipa_nmem != 0 || 96 ipa->ipa_nmem32 != 0 || 97 ipa->ipa_nirq != 1 || 98 ipa->ipa_ndrq > 1) { 99 aprint_error(": unexpected configuration\n"); 100 return; 101 } 102 103 if (isapnp_config(ipa->ipa_iot, ipa->ipa_memt, ipa)) { 104 aprint_error(": couldn't map registers\n"); 105 return; 106 } 107 108 aprint_normal(": %s %s\n", ipa->ipa_devident, ipa->ipa_devclass); 109 110 sc->sc_wdcdev.sc_atac.atac_dev = self; 111 sc->sc_wdcdev.regs = wdr = &sc->wdc_regs; 112 wdr->cmd_iot = ipa->ipa_iot; 113 wdr->ctl_iot = ipa->ipa_iot; 114 /* 115 * An IDE controller can feed us the regions in any order. Pass 116 * them along with the 8-byte region in sc_ad.ioh, and the other 117 * (2 byte) region in auxioh. 118 */ 119 if (ipa->ipa_io[0].length == 8) { 120 wdr->cmd_baseioh = ipa->ipa_io[0].h; 121 wdr->ctl_ioh = ipa->ipa_io[1].h; 122 } else { 123 wdr->cmd_baseioh = ipa->ipa_io[1].h; 124 wdr->ctl_ioh = ipa->ipa_io[0].h; 125 } 126 127 for (i = 0; i < WDC_NREG; i++) { 128 if (bus_space_subregion(wdr->cmd_iot, 129 wdr->cmd_baseioh, i, i == 0 ? 4 : 1, 130 &wdr->cmd_iohs[i]) != 0) { 131 aprint_error(": couldn't subregion registers\n"); 132 return; 133 } 134 } 135 wdr->data32iot = wdr->cmd_iot; 136 wdr->data32ioh = wdr->cmd_iohs[0]; 137 138 sc->sc_ic = ipa->ipa_ic; 139 sc->sc_ih = isa_intr_establish(ipa->ipa_ic, ipa->ipa_irq[0].num, 140 ipa->ipa_irq[0].type, IPL_BIO, wdcintr, &sc->ata_channel); 141 142 #ifdef notyet 143 if (ipa->ipa_ndrq > 0) { 144 sc->sc_drq = ipa->ipa_drq[0].num; 145 146 sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_DMA; 147 sc->sc_wdcdev.dma_start = &wdc_isapnp_dma_start; 148 sc->sc_wdcdev.dma_finish = &wdc_isapnp_dma_finish; 149 wdc_isapnp_dma_setup(sc); 150 } 151 #endif 152 sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_DATA16 | ATAC_CAP_DATA32; 153 sc->sc_wdcdev.sc_atac.atac_pio_cap = 0; 154 sc->wdc_chanlist[0] = &sc->ata_channel; 155 sc->sc_wdcdev.sc_atac.atac_channels = sc->wdc_chanlist; 156 sc->sc_wdcdev.sc_atac.atac_nchannels = 1; 157 sc->sc_wdcdev.wdc_maxdrives = 2; 158 sc->ata_channel.ch_channel = 0; 159 sc->ata_channel.ch_atac = &sc->sc_wdcdev.sc_atac; 160 161 wdc_init_shadow_regs(wdr); 162 163 wdcattach(&sc->ata_channel); 164 } 165 166 #ifdef notyet 167 static void 168 wdc_isapnp_dma_setup(struct wdc_isapnp_softc *sc) 169 { 170 171 if (isa_dmamap_create(sc->sc_ic, sc->sc_drq, 172 MAXPHYS, BUS_DMA_NOWAIT|BUS_DMA_ALLOCNOW)) { 173 aprint_error_dev(sc->sc_wdcdev.sc_atac.atac_dev, 174 "can't create map for drq %d\n", sc->sc_drq); 175 sc->sc_wdcdev.sc_atac.atac_cap &= ~ATAC_CAP_DMA; 176 } 177 } 178 179 static void 180 wdc_isapnp_dma_start(void *scv, void *buf, size_t size, int read) 181 { 182 struct wdc_isapnp_softc *sc = scv; 183 184 isa_dmastart(sc->sc_ic, sc->sc_drq, buf, size, NULL, 185 (read ? DMAMODE_READ : DMAMODE_WRITE) | DMAMODE_DEMAND, 186 BUS_DMA_NOWAIT); 187 } 188 189 static void 190 wdc_isapnp_dma_finish(void *scv) 191 { 192 struct wdc_isapnp_softc *sc = scv; 193 194 isa_dmadone(sc->sc_ic, sc->sc_drq); 195 } 196 #endif 197
Indexes created Mon Sep 29 03:10:08 GMT 2025