wdc_isapnp.c revision 1.4
1 /* $NetBSD: wdc_isapnp.c,v 1.4 1998/06/09 07:28:31 thorpej 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 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 wdc_attachment_data sc_ad; 57 isa_chipset_tag_t sc_ic; 58 void *sc_ih; 59 int sc_drq; 60 }; 61 62 int wdc_isapnp_probe __P((struct device *, struct cfdata *, void *)); 63 void wdc_isapnp_attach __P((struct device *, struct device *, void *)); 64 65 struct cfattach wdc_isapnp_ca = { 66 sizeof(struct wdc_isapnp_softc), wdc_isapnp_probe, wdc_isapnp_attach 67 }; 68 69 #ifdef notyet 70 static void wdc_isapnp_dma_setup __P((void *)); 71 static void wdc_isapnp_dma_start __P((void *, void *, size_t, int)); 72 static void wdc_isapnp_dma_finish __P((void *)); 73 #endif 74 75 int 76 wdc_isapnp_probe(parent, match, aux) 77 struct device *parent; 78 struct cfdata *match; 79 void *aux; 80 { 81 struct isapnp_attach_args *ipa = aux; 82 83 if (strcmp(ipa->ipa_devcompat, "PNP0600")) 84 return (0); 85 86 return (1); 87 } 88 89 void 90 wdc_isapnp_attach(parent, self, aux) 91 struct device *parent, *self; 92 void *aux; 93 { 94 struct wdc_isapnp_softc *sc = (void *)self; 95 struct isapnp_attach_args *ipa = aux; 96 97 printf("\n"); 98 99 if (ipa->ipa_nio != 2 || 100 ipa->ipa_nmem != 0 || 101 ipa->ipa_nmem32 != 0 || 102 ipa->ipa_nirq != 1 || 103 ipa->ipa_ndrq > 1) { 104 printf("%s: unexpected configuration\n", 105 sc->sc_wdcdev.sc_dev.dv_xname); 106 return; 107 } 108 109 if (isapnp_config(ipa->ipa_iot, ipa->ipa_memt, ipa)) { 110 printf("%s: couldn't map registers\n", 111 sc->sc_wdcdev.sc_dev.dv_xname); 112 return; 113 } 114 115 printf("%s: %s %s\n", sc->sc_wdcdev.sc_dev.dv_xname, ipa->ipa_devident, 116 ipa->ipa_devclass); 117 118 sc->sc_ad.iot = ipa->ipa_iot; 119 sc->sc_ad.ioh = ipa->ipa_io[0].h; 120 sc->sc_ad.auxiot = ipa->ipa_iot; 121 sc->sc_ad.auxioh = ipa->ipa_io[1].h; 122 sc->sc_ic = ipa->ipa_ic; 123 124 sc->sc_ih = isa_intr_establish(ipa->ipa_ic, ipa->ipa_irq[0].num, 125 ipa->ipa_irq[0].type, IPL_BIO, wdcintr, sc); 126 127 #ifdef notyet 128 if (ipa->ipa_ndrq > 0) { 129 sc->sc_drq = ipa->ipa_drq[0].num; 130 131 sc->sc_ad.cap |= WDC_CAPABILITY_DMA; 132 sc->sc_ad.dma_setup = &wdc_isapnp_dma_setup; 133 sc->sc_ad.dma_start = &wdc_isapnp_dma_start; 134 sc->sc_ad.dma_finish = &wdc_isapnp_dma_finish; 135 } 136 #endif 137 138 wdcattach(&sc->sc_wdcdev, &sc->sc_ad); 139 } 140 141 #ifdef notyet 142 static void 143 wdc_isapnp_dma_setup(scv) 144 void *scv; 145 { 146 struct wdc_isapnp_softc *sc = scv; 147 148 if (isa_dmamap_create(sc->sc_ic, sc->sc_drq, 149 MAXPHYS, BUS_DMA_NOWAIT|BUS_DMA_ALLOCNOW)) { 150 printf("%s: can't create map for drq %d\n", 151 sc->sc_wdcdev.sc_dev.dv_xname, sc->sc_drq); 152 sc->sc_ad.cap &= ~WDC_CAPABILITY_DMA; 153 } 154 } 155 156 static void 157 wdc_isapnp_dma_start(scv, buf, size, read) 158 void *scv, *buf; 159 size_t size; 160 int read; 161 { 162 struct wdc_isapnp_softc *sc = scv; 163 164 isa_dmastart(sc->sc_ic, sc->sc_drq, buf, 165 size, NULL, read ? DMAMODE_READ : DMAMODE_WRITE, 166 BUS_DMA_NOWAIT); 167 } 168 169 static void 170 wdc_isapnp_dma_finish(scv) 171 void *scv; 172 { 173 struct wdc_isapnp_softc *sc = scv; 174 175 isa_dmadone(sc->sc_ic, sc->sc_drq); 176 } 177 #endif 178
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