wdc_isa.c revision 1.1
1 /* $NetBSD: wdc_isa.c,v 1.1 1998/01/14 23:42:07 cgd Exp $ */ 2 3 /* 4 * Copyright (c) 1994, 1995 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/param.h> 38 #include <sys/systm.h> 39 #include <sys/kernel.h> 40 #include <sys/conf.h> 41 #include <sys/file.h> 42 #include <sys/stat.h> 43 #include <sys/ioctl.h> 44 #include <sys/buf.h> 45 #include <sys/uio.h> 46 #include <sys/malloc.h> 47 #include <sys/device.h> 48 #include <sys/disklabel.h> 49 #include <sys/disk.h> 50 #include <sys/syslog.h> 51 #include <sys/proc.h> 52 53 #include <machine/intr.h> 54 #include <machine/bus.h> 55 56 #include <dev/isa/isavar.h> 57 #include <dev/isa/isadmavar.h> 58 #include <dev/ic/wdcvar.h> 59 60 #define WDC_ISA_REG_NPORTS 8 61 #define WDC_ISA_AUXREG_OFFSET 0x206 62 #define WDC_ISA_AUXREG_NPORTS 1 63 64 /* 65 * XXX This code currently doesn't even try to allow 32-bit data port use. 66 */ 67 68 struct wdc_isa_softc { 69 struct wdc_softc sc_wdcdev; 70 struct wdc_attachment_data sc_ad; 71 void *sc_ih; 72 int sc_drq; 73 }; 74 75 #ifdef __BROKEN_INDIRECT_CONFIG 76 int wdc_isa_probe __P((struct device *, void *, void *)); 77 #else 78 int wdc_isa_probe __P((struct device *, struct cfdata *, void *)); 79 #endif 80 void wdc_isa_attach __P((struct device *, struct device *, void *)); 81 82 struct cfattach wdc_isa_ca = { 83 sizeof(struct wdc_isa_softc), wdc_isa_probe, wdc_isa_attach 84 }; 85 86 static void wdc_isa_dma_setup __P((void *)); 87 static void wdc_isa_dma_start __P((void *, void *, size_t, int)); 88 static void wdc_isa_dma_finish __P((void *)); 89 90 int 91 wdc_isa_probe(parent, match, aux) 92 struct device *parent; 93 #ifdef __BROKEN_INDIRECT_CONFIG 94 void *match; 95 #else 96 struct cfdata *match; 97 #endif 98 void *aux; 99 { 100 #if 0 /* XXX memset */ 101 struct wdc_attachment_data ad = { 0 }; 102 #else /* XXX memset */ 103 struct wdc_attachment_data ad; 104 #endif /* XXX memset */ 105 struct isa_attach_args *ia = aux; 106 int result = 0; 107 108 #if 0 /* XXX memset */ 109 #else /* XXX memset */ 110 bzero(&ad, sizeof ad); 111 #endif /* XXX memset */ 112 ad.iot = ia->ia_iot; 113 if (bus_space_map(ad.iot, ia->ia_iobase, WDC_ISA_REG_NPORTS, 0, 114 &ad.ioh)) 115 goto out; 116 117 ad.auxiot = ia->ia_iot; 118 if (bus_space_map(ad.auxiot, ia->ia_iobase + WDC_ISA_AUXREG_OFFSET, 119 WDC_ISA_AUXREG_NPORTS, 0, &ad.auxioh)) 120 goto outunmap; 121 122 result = wdcprobe(&ad); 123 if (result) { 124 ia->ia_iosize = WDC_ISA_REG_NPORTS; 125 ia->ia_msize = 0; 126 } 127 128 outunmap: 129 bus_space_unmap(ad.auxiot, ad.auxioh, WDC_ISA_AUXREG_NPORTS); 130 out: 131 bus_space_unmap(ad.iot, ad.ioh, WDC_ISA_REG_NPORTS); 132 return (result); 133 } 134 135 void 136 wdc_isa_attach(parent, self, aux) 137 struct device *parent, *self; 138 void *aux; 139 { 140 struct wdc_isa_softc *sc = (struct wdc_isa_softc *)self; 141 struct isa_attach_args *ia = aux; 142 143 bzero(&sc->sc_ad, sizeof sc->sc_ad); 144 sc->sc_ad.iot = ia->ia_iot; 145 sc->sc_ad.auxiot = ia->ia_iot; 146 if (bus_space_map(sc->sc_ad.iot, ia->ia_iobase, WDC_ISA_REG_NPORTS, 0, 147 &sc->sc_ad.ioh) || 148 bus_space_map(sc->sc_ad.auxiot, 149 ia->ia_iobase + WDC_ISA_AUXREG_OFFSET, WDC_ISA_AUXREG_NPORTS, 150 0, &sc->sc_ad.auxioh)) { 151 printf(": couldn't map registers\n"); 152 panic("wdc_isa_attach: couldn't map registers\n"); 153 } 154 155 sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq, IST_EDGE, 156 IPL_BIO, wdcintr, sc); 157 158 if (ia->ia_drq != DRQUNK) { 159 sc->sc_drq = ia->ia_drq; 160 161 sc->sc_ad.cap |= WDC_CAPABILITY_DMA; 162 sc->sc_ad.dma_setup = &wdc_isa_dma_setup; 163 sc->sc_ad.dma_start = &wdc_isa_dma_start; 164 sc->sc_ad.dma_finish = &wdc_isa_dma_finish; 165 } 166 167 wdcattach(&sc->sc_wdcdev, &sc->sc_ad); 168 } 169 170 static void 171 wdc_isa_dma_setup(scv) 172 void *scv; 173 { 174 struct wdc_isa_softc *sc = scv; 175 176 if (isa_dmamap_create(sc->sc_wdcdev.sc_dev.dv_parent, sc->sc_drq, 177 MAXPHYS, BUS_DMA_NOWAIT|BUS_DMA_ALLOCNOW)) { 178 printf("%s: can't create map for drq %d\n", 179 sc->sc_wdcdev.sc_dev.dv_xname, sc->sc_drq); 180 sc->sc_ad.cap &= ~WDC_CAPABILITY_DMA; 181 } 182 } 183 184 static void 185 wdc_isa_dma_start(scv, buf, size, read) 186 void *scv, *buf; 187 size_t size; 188 int read; 189 { 190 struct wdc_isa_softc *sc = scv; 191 192 isa_dmastart(sc->sc_wdcdev.sc_dev.dv_parent, sc->sc_drq, buf, 193 size, NULL, read ? DMAMODE_READ : DMAMODE_WRITE, 194 BUS_DMA_NOWAIT); 195 } 196 197 static void 198 wdc_isa_dma_finish(scv) 199 void *scv; 200 { 201 struct wdc_isa_softc *sc = scv; 202 203 isa_dmadone(sc->sc_wdcdev.sc_dev.dv_parent, sc->sc_drq); 204 } 205
Indexes created Tue Sep 30 20:09:53 GMT 2025