wdc_isapnp.c revision 1.43
1/* $NetBSD: wdc_isapnp.c,v 1.43 2017/10/07 20:02:07 jdolecek 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 1.43 2017/10/07 20:02:07 jdolecek 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 54struct wdc_isapnp_softc { 55 struct wdc_softc sc_wdcdev; 56 struct ata_channel *wdc_chanlist[1]; 57 struct ata_channel ata_channel; 58 struct wdc_regs wdc_regs; 59 isa_chipset_tag_t sc_ic; 60 void *sc_ih; 61 int sc_drq; 62}; 63 64static int wdc_isapnp_probe(device_t, cfdata_t, void *); 65static void wdc_isapnp_attach(device_t, device_t, void *); 66 67CFATTACH_DECL_NEW(wdc_isapnp, sizeof(struct wdc_isapnp_softc), 68 wdc_isapnp_probe, wdc_isapnp_attach, NULL, NULL); 69 70#ifdef notyet 71static void wdc_isapnp_dma_setup(struct wdc_isapnp_softc *); 72static void wdc_isapnp_dma_start(void *, void *, size_t, int); 73static void wdc_isapnp_dma_finish(void *); 74#endif 75 76static int 77wdc_isapnp_probe(device_t parent, cfdata_t match, void *aux) 78{ 79 int pri, variant; 80 81 pri = isapnp_devmatch(aux, &isapnp_wdc_devinfo, &variant); 82 if (pri && variant > 0) 83 pri = 0; 84 return (pri); 85} 86 87static void 88wdc_isapnp_attach(device_t parent, device_t self, void *aux) 89{ 90 struct wdc_isapnp_softc *sc = device_private(self); 91 struct wdc_regs *wdr; 92 struct isapnp_attach_args *ipa = aux; 93 int i; 94 95 if (ipa->ipa_nio != 2 || 96 ipa->ipa_nmem != 0 || 97 ipa->ipa_nmem32 != 0 || 98 ipa->ipa_nirq != 1 || 99 ipa->ipa_ndrq > 1) { 100 aprint_error(": unexpected configuration\n"); 101 return; 102 } 103 104 if (isapnp_config(ipa->ipa_iot, ipa->ipa_memt, ipa)) { 105 aprint_error(": couldn't map registers\n"); 106 return; 107 } 108 109 aprint_normal(": %s %s\n", ipa->ipa_devident, ipa->ipa_devclass); 110 111 sc->sc_wdcdev.sc_atac.atac_dev = self; 112 sc->sc_wdcdev.regs = wdr = &sc->wdc_regs; 113 wdr->cmd_iot = ipa->ipa_iot; 114 wdr->ctl_iot = ipa->ipa_iot; 115 /* 116 * An IDE controller can feed us the regions in any order. Pass 117 * them along with the 8-byte region in sc_ad.ioh, and the other 118 * (2 byte) region in auxioh. 119 */ 120 if (ipa->ipa_io[0].length == 8) { 121 wdr->cmd_baseioh = ipa->ipa_io[0].h; 122 wdr->ctl_ioh = ipa->ipa_io[1].h; 123 } else { 124 wdr->cmd_baseioh = ipa->ipa_io[1].h; 125 wdr->ctl_ioh = ipa->ipa_io[0].h; 126 } 127 128 for (i = 0; i < WDC_NREG; i++) { 129 if (bus_space_subregion(wdr->cmd_iot, 130 wdr->cmd_baseioh, i, i == 0 ? 4 : 1, 131 &wdr->cmd_iohs[i]) != 0) { 132 aprint_error(": couldn't subregion registers\n"); 133 return; 134 } 135 } 136 wdr->data32iot = wdr->cmd_iot; 137 wdr->data32ioh = wdr->cmd_iohs[0]; 138 139 sc->sc_ic = ipa->ipa_ic; 140 sc->sc_ih = isa_intr_establish(ipa->ipa_ic, ipa->ipa_irq[0].num, 141 ipa->ipa_irq[0].type, IPL_BIO, wdcintr, &sc->ata_channel); 142 143#ifdef notyet 144 if (ipa->ipa_ndrq > 0) { 145 sc->sc_drq = ipa->ipa_drq[0].num; 146 147 sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_DMA; 148 sc->sc_wdcdev.dma_start = &wdc_isapnp_dma_start; 149 sc->sc_wdcdev.dma_finish = &wdc_isapnp_dma_finish; 150 wdc_isapnp_dma_setup(sc); 151 } 152#endif 153 sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_DATA16 | ATAC_CAP_DATA32; 154 sc->sc_wdcdev.sc_atac.atac_pio_cap = 0; 155 sc->wdc_chanlist[0] = &sc->ata_channel; 156 sc->sc_wdcdev.sc_atac.atac_channels = sc->wdc_chanlist; 157 sc->sc_wdcdev.sc_atac.atac_nchannels = 1; 158 sc->sc_wdcdev.wdc_maxdrives = 2; 159 sc->ata_channel.ch_channel = 0; 160 sc->ata_channel.ch_atac = &sc->sc_wdcdev.sc_atac; 161 sc->ata_channel.ch_queue = ata_queue_alloc(1); 162 wdc_init_shadow_regs(wdr); 163 164 wdcattach(&sc->ata_channel); 165} 166 167#ifdef notyet 168static void 169wdc_isapnp_dma_setup(struct wdc_isapnp_softc *sc) 170{ 171 172 if (isa_dmamap_create(sc->sc_ic, sc->sc_drq, 173 MAXPHYS, BUS_DMA_NOWAIT|BUS_DMA_ALLOCNOW)) { 174 aprint_error_dev(sc->sc_wdcdev.sc_atac.atac_dev, 175 "can't create map for drq %d\n", sc->sc_drq); 176 sc->sc_wdcdev.sc_atac.atac_cap &= ~ATAC_CAP_DMA; 177 } 178} 179 180static void 181wdc_isapnp_dma_start(void *scv, void *buf, size_t size, int read) 182{ 183 struct wdc_isapnp_softc *sc = scv; 184 185 isa_dmastart(sc->sc_ic, sc->sc_drq, buf, size, NULL, 186 (read ? DMAMODE_READ : DMAMODE_WRITE) | DMAMODE_DEMAND, 187 BUS_DMA_NOWAIT); 188} 189 190static void 191wdc_isapnp_dma_finish(void *scv) 192{ 193 struct wdc_isapnp_softc *sc = scv; 194 195 isa_dmadone(sc->sc_ic, sc->sc_drq); 196} 197#endif 198