1 /* $NetBSD: wdc_isapnp.c,v 1.39 2008/04/28 20:23:53 martin 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 1.39 2008/04/28 20:23:53 martin Exp $"); 34 35 #include <sys/param.h> 36 #include <sys/systm.h> 37 #include <sys/device.h> 38 #include <sys/malloc.h> 39 40 #include <sys/bus.h> 41 #include <sys/intr.h> 42 43 #include <dev/isa/isavar.h> 44 #include <dev/isa/isadmavar.h> 45 46 #include <dev/isapnp/isapnpreg.h> 47 #include <dev/isapnp/isapnpvar.h> 48 #include <dev/isapnp/isapnpdevs.h> 49 50 #include <dev/ata/atavar.h> 51 #include <dev/ic/wdcreg.h> 52 #include <dev/ic/wdcvar.h> 53 54 struct wdc_isapnp_softc { 55 struct wdc_softc sc_wdcdev; 56 struct ata_channel *wdc_chanlist[1]; 57 struct ata_channel ata_channel; 58 struct ata_queue wdc_chqueue; 59 struct wdc_regs wdc_regs; 60 isa_chipset_tag_t sc_ic; 61 void *sc_ih; 62 int sc_drq; 63 }; 64 65 static int wdc_isapnp_probe(device_t, cfdata_t, void *); 66 static void wdc_isapnp_attach(device_t, device_t, void *); 67 68 CFATTACH_DECL_NEW(wdc_isapnp, sizeof(struct wdc_isapnp_softc), 69 wdc_isapnp_probe, wdc_isapnp_attach, NULL, NULL); 70 71 #ifdef notyet 72 static void wdc_isapnp_dma_setup(struct wdc_isapnp_softc *); 73 static void wdc_isapnp_dma_start(void *, void *, size_t, int); 74 static void wdc_isapnp_dma_finish(void *); 75 #endif 76 77 static int 78 wdc_isapnp_probe(device_t parent, cfdata_t match, void *aux) 79 { 80 int pri, variant; 81 82 pri = isapnp_devmatch(aux, &isapnp_wdc_devinfo, &variant); 83 if (pri && variant > 0) 84 pri = 0; 85 return (pri); 86 } 87 88 static void 89 wdc_isapnp_attach(device_t parent, device_t self, void *aux) 90 { 91 struct wdc_isapnp_softc *sc = device_private(self); 92 struct wdc_regs *wdr; 93 struct isapnp_attach_args *ipa = aux; 94 int i; 95 96 if (ipa->ipa_nio != 2 || 97 ipa->ipa_nmem != 0 || 98 ipa->ipa_nmem32 != 0 || 99 ipa->ipa_nirq != 1 || 100 ipa->ipa_ndrq > 1) { 101 aprint_error(": unexpected configuration\n"); 102 return; 103 } 104 105 if (isapnp_config(ipa->ipa_iot, ipa->ipa_memt, ipa)) { 106 aprint_error(": couldn't map registers\n"); 107 return; 108 } 109 110 aprint_normal(": %s %s\n", ipa->ipa_devident, ipa->ipa_devclass); 111 112 sc->sc_wdcdev.sc_atac.atac_dev = self; 113 sc->sc_wdcdev.regs = wdr = &sc->wdc_regs; 114 wdr->cmd_iot = ipa->ipa_iot; 115 wdr->ctl_iot = ipa->ipa_iot; 116 /* 117 * An IDE controller can feed us the regions in any order. Pass 118 * them along with the 8-byte region in sc_ad.ioh, and the other 119 * (2 byte) region in auxioh. 120 */ 121 if (ipa->ipa_io[0].length == 8) { 122 wdr->cmd_baseioh = ipa->ipa_io[0].h; 123 wdr->ctl_ioh = ipa->ipa_io[1].h; 124 } else { 125 wdr->cmd_baseioh = ipa->ipa_io[1].h; 126 wdr->ctl_ioh = ipa->ipa_io[0].h; 127 } 128 129 for (i = 0; i < WDC_NREG; i++) { 130 if (bus_space_subregion(wdr->cmd_iot, 131 wdr->cmd_baseioh, i, i == 0 ? 4 : 1, 132 &wdr->cmd_iohs[i]) != 0) { 133 aprint_error(": couldn't subregion registers\n"); 134 return; 135 } 136 } 137 wdr->data32iot = wdr->cmd_iot; 138 wdr->data32ioh = wdr->cmd_iohs[0]; 139 140 sc->sc_ic = ipa->ipa_ic; 141 sc->sc_ih = isa_intr_establish(ipa->ipa_ic, ipa->ipa_irq[0].num, 142 ipa->ipa_irq[0].type, IPL_BIO, wdcintr, &sc->ata_channel); 143 144 #ifdef notyet 145 if (ipa->ipa_ndrq > 0) { 146 sc->sc_drq = ipa->ipa_drq[0].num; 147 148 sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_DMA; 149 sc->sc_wdcdev.dma_start = &wdc_isapnp_dma_start; 150 sc->sc_wdcdev.dma_finish = &wdc_isapnp_dma_finish; 151 wdc_isapnp_dma_setup(sc); 152 } 153 #endif 154 sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_DATA16 | ATAC_CAP_DATA32; 155 sc->sc_wdcdev.sc_atac.atac_pio_cap = 0; 156 sc->wdc_chanlist[0] = &sc->ata_channel; 157 sc->sc_wdcdev.sc_atac.atac_channels = sc->wdc_chanlist; 158 sc->sc_wdcdev.sc_atac.atac_nchannels = 1; 159 sc->ata_channel.ch_channel = 0; 160 sc->ata_channel.ch_atac = &sc->sc_wdcdev.sc_atac; 161 sc->ata_channel.ch_queue = &sc->wdc_chqueue; 162 sc->ata_channel.ch_ndrive = 2; 163 164 wdc_init_shadow_regs(&sc->ata_channel); 165 166 wdcattach(&sc->ata_channel); 167 } 168 169 #ifdef notyet 170 static void 171 wdc_isapnp_dma_setup(struct wdc_isapnp_softc *sc) 172 { 173 174 if (isa_dmamap_create(sc->sc_ic, sc->sc_drq, 175 MAXPHYS, BUS_DMA_NOWAIT|BUS_DMA_ALLOCNOW)) { 176 aprint_error_dev(sc->sc_wdcdev.sc_atac.atac_dev, 177 "can't create map for drq %d\n", sc->sc_drq); 178 sc->sc_wdcdev.sc_atac.atac_cap &= ~ATAC_CAP_DMA; 179 } 180 } 181 182 static void 183 wdc_isapnp_dma_start(void *scv, void *buf, size_t size, int read) 184 { 185 struct wdc_isapnp_softc *sc = scv; 186 187 isa_dmastart(sc->sc_ic, sc->sc_drq, buf, size, NULL, 188 (read ? DMAMODE_READ : DMAMODE_WRITE) | DMAMODE_DEMAND, 189 BUS_DMA_NOWAIT); 190 } 191 192 static void 193 wdc_isapnp_dma_finish(void *scv) 194 { 195 struct wdc_isapnp_softc *sc = scv; 196 197 isa_dmadone(sc->sc_ic, sc->sc_drq); 198 } 199 #endif 200