wdc_isa.c revision 1.9
1 /* $NetBSD: wdc_isa.c,v 1.9 1998/08/15 10:10:52 mycroft Exp $ */ 2 3 /*- 4 * Copyright (c) 1998 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 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 #include <sys/types.h> 40 #include <sys/param.h> 41 #include <sys/systm.h> 42 #include <sys/device.h> 43 44 #include <machine/bus.h> 45 #include <machine/intr.h> 46 47 #include <dev/isa/isavar.h> 48 #include <dev/isa/isadmavar.h> 49 50 #include <dev/ic/wdcvar.h> 51 52 #define WDC_ISA_REG_NPORTS 8 53 #define WDC_ISA_AUXREG_OFFSET 0x206 54 #define WDC_ISA_AUXREG_NPORTS 1 /* XXX "fdc" owns ports 0x3f7/0x377 */ 55 56 /* 57 * XXX This code currently doesn't even try to allow 32-bit data port use. 58 */ 59 60 struct wdc_isa_softc { 61 struct wdc_softc sc_wdcdev; 62 struct wdc_attachment_data sc_ad; 63 isa_chipset_tag_t sc_ic; 64 void *sc_ih; 65 int sc_drq; 66 }; 67 68 int wdc_isa_probe __P((struct device *, struct cfdata *, void *)); 69 void wdc_isa_attach __P((struct device *, struct device *, void *)); 70 71 struct cfattach wdc_isa_ca = { 72 sizeof(struct wdc_isa_softc), wdc_isa_probe, wdc_isa_attach 73 }; 74 75 static void wdc_isa_dma_setup __P((void *)); 76 static void wdc_isa_dma_start __P((void *, void *, size_t, int)); 77 static void wdc_isa_dma_finish __P((void *)); 78 79 int 80 wdc_isa_probe(parent, match, aux) 81 struct device *parent; 82 struct cfdata *match; 83 void *aux; 84 { 85 #if 0 /* XXX memset */ 86 struct wdc_attachment_data ad = { 0 }; 87 #else /* XXX memset */ 88 struct wdc_attachment_data ad; 89 #endif /* XXX memset */ 90 struct isa_attach_args *ia = aux; 91 int result = 0; 92 93 #if 0 /* XXX memset */ 94 #else /* XXX memset */ 95 bzero(&ad, sizeof ad); 96 #endif /* XXX memset */ 97 ad.iot = ia->ia_iot; 98 if (bus_space_map(ad.iot, ia->ia_iobase, WDC_ISA_REG_NPORTS, 0, 99 &ad.ioh)) 100 goto out; 101 102 ad.auxiot = ia->ia_iot; 103 if (bus_space_map(ad.auxiot, ia->ia_iobase + WDC_ISA_AUXREG_OFFSET, 104 WDC_ISA_AUXREG_NPORTS, 0, &ad.auxioh)) 105 goto outunmap; 106 107 result = wdcprobe(&ad); 108 if (result) { 109 ia->ia_iosize = WDC_ISA_REG_NPORTS; 110 ia->ia_msize = 0; 111 } 112 113 bus_space_unmap(ad.auxiot, ad.auxioh, WDC_ISA_AUXREG_NPORTS); 114 outunmap: 115 bus_space_unmap(ad.iot, ad.ioh, WDC_ISA_REG_NPORTS); 116 out: 117 return (result); 118 } 119 120 void 121 wdc_isa_attach(parent, self, aux) 122 struct device *parent, *self; 123 void *aux; 124 { 125 struct wdc_isa_softc *sc = (void *)self; 126 struct isa_attach_args *ia = aux; 127 128 printf("\n"); 129 130 sc->sc_ad.iot = ia->ia_iot; 131 sc->sc_ad.auxiot = ia->ia_iot; 132 sc->sc_ic = ia->ia_ic; 133 if (bus_space_map(sc->sc_ad.iot, ia->ia_iobase, WDC_ISA_REG_NPORTS, 0, 134 &sc->sc_ad.ioh) || 135 bus_space_map(sc->sc_ad.auxiot, 136 ia->ia_iobase + WDC_ISA_AUXREG_OFFSET, WDC_ISA_AUXREG_NPORTS, 137 0, &sc->sc_ad.auxioh)) { 138 printf("%s: couldn't map registers\n", 139 sc->sc_wdcdev.sc_dev.dv_xname); 140 } 141 142 sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq, IST_EDGE, 143 IPL_BIO, wdcintr, sc); 144 145 if (ia->ia_drq != DRQUNK) { 146 sc->sc_drq = ia->ia_drq; 147 148 sc->sc_ad.cap |= WDC_CAPABILITY_DMA; 149 sc->sc_ad.dma_arg = sc; 150 sc->sc_ad.dma_setup = &wdc_isa_dma_setup; 151 sc->sc_ad.dma_start = &wdc_isa_dma_start; 152 sc->sc_ad.dma_finish = &wdc_isa_dma_finish; 153 } 154 155 wdcattach(&sc->sc_wdcdev, &sc->sc_ad); 156 } 157 158 static void 159 wdc_isa_dma_setup(scv) 160 void *scv; 161 { 162 struct wdc_isa_softc *sc = scv; 163 164 if (isa_dmamap_create(sc->sc_ic, sc->sc_drq, 165 MAXPHYS, BUS_DMA_NOWAIT|BUS_DMA_ALLOCNOW)) { 166 printf("%s: can't create map for drq %d\n", 167 sc->sc_wdcdev.sc_dev.dv_xname, sc->sc_drq); 168 sc->sc_ad.cap &= ~WDC_CAPABILITY_DMA; 169 } 170 } 171 172 static void 173 wdc_isa_dma_start(scv, buf, size, read) 174 void *scv, *buf; 175 size_t size; 176 int read; 177 { 178 struct wdc_isa_softc *sc = scv; 179 180 isa_dmastart(sc->sc_ic, sc->sc_drq, buf, 181 size, NULL, read ? DMAMODE_READ : DMAMODE_WRITE, 182 BUS_DMA_NOWAIT); 183 } 184 185 static void 186 wdc_isa_dma_finish(scv) 187 void *scv; 188 { 189 struct wdc_isa_softc *sc = scv; 190 191 isa_dmadone(sc->sc_ic, sc->sc_drq); 192 } 193
Indexes created Tue Sep 30 20:09:53 GMT 2025