wdc_isapnp.c revision 1.5
1 /* $NetBSD: wdc_isapnp.c,v 1.5 1998/07/23 19:30:46 christos 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 42 #include <machine/bus.h> 43 #include <machine/intr.h> 44 45 #include <dev/isa/isavar.h> 46 #include <dev/isa/isadmavar.h> 47 48 #include <dev/isapnp/isapnpreg.h> 49 #include <dev/isapnp/isapnpvar.h> 50 #include <dev/isapnp/isapnpdevs.h> 51 52 #include <dev/ic/wdcreg.h> 53 #include <dev/ic/wdcvar.h> 54 55 struct wdc_isapnp_softc { 56 struct wdc_softc sc_wdcdev; 57 struct wdc_attachment_data sc_ad; 58 isa_chipset_tag_t sc_ic; 59 void *sc_ih; 60 int sc_drq; 61 }; 62 63 int wdc_isapnp_probe __P((struct device *, struct cfdata *, void *)); 64 void wdc_isapnp_attach __P((struct device *, struct device *, void *)); 65 66 struct cfattach wdc_isapnp_ca = { 67 sizeof(struct wdc_isapnp_softc), wdc_isapnp_probe, wdc_isapnp_attach 68 }; 69 70 #ifdef notyet 71 static void wdc_isapnp_dma_setup __P((void *)); 72 static void wdc_isapnp_dma_start __P((void *, void *, size_t, int)); 73 static void wdc_isapnp_dma_finish __P((void *)); 74 #endif 75 76 int 77 wdc_isapnp_probe(parent, match, aux) 78 struct device *parent; 79 struct cfdata *match; 80 void *aux; 81 { 82 return isapnp_devmatch(aux, &isapnp_wdc_devinfo); 83 } 84 85 void 86 wdc_isapnp_attach(parent, self, aux) 87 struct device *parent, *self; 88 void *aux; 89 { 90 struct wdc_isapnp_softc *sc = (void *)self; 91 struct isapnp_attach_args *ipa = aux; 92 93 printf("\n"); 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 printf("%s: unexpected configuration\n", 101 sc->sc_wdcdev.sc_dev.dv_xname); 102 return; 103 } 104 105 if (isapnp_config(ipa->ipa_iot, ipa->ipa_memt, ipa)) { 106 printf("%s: couldn't map registers\n", 107 sc->sc_wdcdev.sc_dev.dv_xname); 108 return; 109 } 110 111 printf("%s: %s %s\n", sc->sc_wdcdev.sc_dev.dv_xname, ipa->ipa_devident, 112 ipa->ipa_devclass); 113 114 sc->sc_ad.iot = ipa->ipa_iot; 115 sc->sc_ad.ioh = ipa->ipa_io[0].h; 116 sc->sc_ad.auxiot = ipa->ipa_iot; 117 sc->sc_ad.auxioh = ipa->ipa_io[1].h; 118 sc->sc_ic = ipa->ipa_ic; 119 120 sc->sc_ih = isa_intr_establish(ipa->ipa_ic, ipa->ipa_irq[0].num, 121 ipa->ipa_irq[0].type, IPL_BIO, wdcintr, sc); 122 123 #ifdef notyet 124 if (ipa->ipa_ndrq > 0) { 125 sc->sc_drq = ipa->ipa_drq[0].num; 126 127 sc->sc_ad.cap |= WDC_CAPABILITY_DMA; 128 sc->sc_ad.dma_setup = &wdc_isapnp_dma_setup; 129 sc->sc_ad.dma_start = &wdc_isapnp_dma_start; 130 sc->sc_ad.dma_finish = &wdc_isapnp_dma_finish; 131 } 132 #endif 133 134 wdcattach(&sc->sc_wdcdev, &sc->sc_ad); 135 } 136 137 #ifdef notyet 138 static void 139 wdc_isapnp_dma_setup(scv) 140 void *scv; 141 { 142 struct wdc_isapnp_softc *sc = scv; 143 144 if (isa_dmamap_create(sc->sc_ic, sc->sc_drq, 145 MAXPHYS, BUS_DMA_NOWAIT|BUS_DMA_ALLOCNOW)) { 146 printf("%s: can't create map for drq %d\n", 147 sc->sc_wdcdev.sc_dev.dv_xname, sc->sc_drq); 148 sc->sc_ad.cap &= ~WDC_CAPABILITY_DMA; 149 } 150 } 151 152 static void 153 wdc_isapnp_dma_start(scv, buf, size, read) 154 void *scv, *buf; 155 size_t size; 156 int read; 157 { 158 struct wdc_isapnp_softc *sc = scv; 159 160 isa_dmastart(sc->sc_ic, sc->sc_drq, buf, 161 size, NULL, read ? DMAMODE_READ : DMAMODE_WRITE, 162 BUS_DMA_NOWAIT); 163 } 164 165 static void 166 wdc_isapnp_dma_finish(scv) 167 void *scv; 168 { 169 struct wdc_isapnp_softc *sc = scv; 170 171 isa_dmadone(sc->sc_ic, sc->sc_drq); 172 } 173 #endif 174
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