wdc_isapnp.c revision 1.2.2.4
1 /* $NetBSD: wdc_isapnp.c,v 1.2.2.4 1998/07/27 19:02:47 bouyer Exp $ */ 2 3 /* 4 * Copyright (c) 1997 Charles M. Hannum. All rights reserved. 5 * 6 * DMA and multi-sector PIO handling are derived from code contributed by 7 * Onno van der Linden. 8 * 9 * ISA attachment created by Christopher G. Demetriou. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by Charles M. Hannum. 22 * 4. The name of the author may not be used to endorse or promote products 23 * derived from this software without specific prior written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 26 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 27 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 28 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 29 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 30 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 31 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 32 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 33 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 34 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 35 */ 36 37 #include <sys/types.h> 38 #include <sys/param.h> 39 #include <sys/systm.h> 40 #include <sys/device.h> 41 #include <sys/malloc.h> 42 43 #include <machine/bus.h> 44 #include <machine/intr.h> 45 46 #include <dev/isa/isavar.h> 47 #include <dev/isa/isadmavar.h> 48 49 #include <dev/isapnp/isapnpreg.h> 50 #include <dev/isapnp/isapnpvar.h> 51 #include <dev/isapnp/isapnpdevs.h> 52 53 #include <dev/ata/atavar.h> 54 #include <dev/ic/wdcreg.h> 55 #include <dev/ic/wdcvar.h> 56 57 struct wdc_isapnp_softc { 58 struct wdc_softc sc_wdcdev; 59 struct channel_softc wdc_channel; 60 isa_chipset_tag_t sc_ic; 61 void *sc_ih; 62 int sc_drq; 63 }; 64 65 int wdc_isapnp_probe __P((struct device *, struct cfdata *, void *)); 66 void wdc_isapnp_attach __P((struct device *, struct device *, void *)); 67 68 struct cfattach wdc_isapnp_ca = { 69 sizeof(struct wdc_isapnp_softc), wdc_isapnp_probe, wdc_isapnp_attach 70 }; 71 72 #ifdef notyet 73 static void wdc_isapnp_dma_setup __P((struct wdc_isapnp_softc *)); 74 static void wdc_isapnp_dma_start __P((void *, void *, size_t, int)); 75 static void wdc_isapnp_dma_finish __P((void *)); 76 #endif 77 78 int 79 wdc_isapnp_probe(parent, match, aux) 80 struct device *parent; 81 struct cfdata *match; 82 void *aux; 83 { 84 return isapnp_devmatch(aux, &isapnp_wdc_devinfo); 85 } 86 87 void 88 wdc_isapnp_attach(parent, self, aux) 89 struct device *parent, *self; 90 void *aux; 91 { 92 struct wdc_isapnp_softc *sc = (void *)self; 93 struct isapnp_attach_args *ipa = aux; 94 95 printf("\n"); 96 97 if (ipa->ipa_nio != 2 || 98 ipa->ipa_nmem != 0 || 99 ipa->ipa_nmem32 != 0 || 100 ipa->ipa_nirq != 1 || 101 ipa->ipa_ndrq > 1) { 102 printf("%s: unexpected configuration\n", 103 sc->sc_wdcdev.sc_dev.dv_xname); 104 return; 105 } 106 107 if (isapnp_config(ipa->ipa_iot, ipa->ipa_memt, ipa)) { 108 printf("%s: couldn't map registers\n", 109 sc->sc_wdcdev.sc_dev.dv_xname); 110 return; 111 } 112 113 printf("%s: %s %s\n", sc->sc_wdcdev.sc_dev.dv_xname, ipa->ipa_devident, 114 ipa->ipa_devclass); 115 116 sc->wdc_channel.cmd_iot = ipa->ipa_iot; 117 sc->wdc_channel.cmd_ioh = ipa->ipa_io[0].h; 118 sc->wdc_channel.ctl_iot = ipa->ipa_iot; 119 sc->wdc_channel.ctl_ioh = ipa->ipa_io[1].h; 120 sc->sc_ic = ipa->ipa_ic; 121 122 sc->sc_ih = isa_intr_establish(ipa->ipa_ic, ipa->ipa_irq[0].num, 123 ipa->ipa_irq[0].type, IPL_BIO, wdcintr, &sc->wdc_channel); 124 125 #ifdef notyet 126 if (ipa->ipa_ndrq > 0) { 127 sc->sc_drq = ipa->ipa_drq[0].num; 128 129 sc->sc_ad.cap |= WDC_CAPABILITY_DMA; 130 sc->sc_ad.dma_start = &wdc_isapnp_dma_start; 131 sc->sc_ad.dma_finish = &wdc_isapnp_dma_finish; 132 wdc_isapnp_dma_setup(sc); 133 } 134 #endif 135 sc->sc_wdcdev.cap |= WDC_CAPABILITY_DATA32; 136 sc->sc_wdcdev.pio_mode = 0; 137 sc->sc_wdcdev.channels = &sc->wdc_channel; 138 sc->sc_wdcdev.nchannels = 1; 139 sc->wdc_channel.channel = 0; 140 sc->wdc_channel.wdc = &sc->sc_wdcdev; 141 sc->wdc_channel.ch_queue = malloc(sizeof(struct channel_queue), 142 M_DEVBUF, M_NOWAIT); 143 if (sc->wdc_channel.ch_queue == NULL) { 144 printf("%s: can't allocate memory for command queue", 145 sc->sc_wdcdev.sc_dev.dv_xname); 146 return; 147 } 148 wdcattach(&sc->wdc_channel); 149 } 150 151 #ifdef notyet 152 static void 153 wdc_isapnp_dma_setup(sc) 154 struct wdc_isapnp_softc *sc; 155 { 156 157 if (isa_dmamap_create(sc->sc_ic, sc->sc_drq, 158 MAXPHYS, BUS_DMA_NOWAIT|BUS_DMA_ALLOCNOW)) { 159 printf("%s: can't create map for drq %d\n", 160 sc->sc_wdcdev.sc_dev.dv_xname, sc->sc_drq); 161 sc->sc_wdcdev.cap &= ~WDC_CAPABILITY_DMA; 162 } 163 } 164 165 static void 166 wdc_isapnp_dma_start(scv, buf, size, read) 167 void *scv, *buf; 168 size_t size; 169 int read; 170 { 171 struct wdc_isapnp_softc *sc = scv; 172 173 isa_dmastart(sc->sc_ic, sc->sc_drq, buf, 174 size, NULL, read ? DMAMODE_READ : DMAMODE_WRITE, 175 BUS_DMA_NOWAIT); 176 } 177 178 static void 179 wdc_isapnp_dma_finish(scv) 180 void *scv; 181 { 182 struct wdc_isapnp_softc *sc = scv; 183 184 isa_dmadone(sc->sc_ic, sc->sc_drq); 185 } 186 #endif 187
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