wdc_isa.c revision 1.21
1 /* $NetBSD: wdc_isa.c,v 1.21 2001/06/07 06:33:48 leo 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 #include <sys/malloc.h> 44 45 #include <machine/bus.h> 46 #include <machine/intr.h> 47 48 #include <dev/isa/isavar.h> 49 #include <dev/isa/isadmavar.h> 50 51 #include <dev/ata/atavar.h> 52 #include <dev/ic/wdcvar.h> 53 54 #define WDC_ISA_REG_NPORTS 8 55 #define WDC_ISA_AUXREG_OFFSET 0x206 56 #define WDC_ISA_AUXREG_NPORTS 1 /* XXX "fdc" owns ports 0x3f7/0x377 */ 57 58 /* options passed via the 'flags' config keyword */ 59 #define WDC_OPTIONS_32 0x01 /* try to use 32bit data I/O */ 60 #define WDC_OPTIONS_SINGLE_DRIVE 0x02 /* Don't probe second drive */ 61 #define WDC_OPTIONS_ATA_NOSTREAM 0x04 62 #define WDC_OPTIONS_ATAPI_NOSTREAM 0x08 63 64 struct wdc_isa_softc { 65 struct wdc_softc sc_wdcdev; 66 struct channel_softc *wdc_chanptr; 67 struct channel_softc wdc_channel; 68 isa_chipset_tag_t sc_ic; 69 void *sc_ih; 70 int sc_drq; 71 }; 72 73 int wdc_isa_probe __P((struct device *, struct cfdata *, void *)); 74 void wdc_isa_attach __P((struct device *, struct device *, void *)); 75 76 struct cfattach wdc_isa_ca = { 77 sizeof(struct wdc_isa_softc), wdc_isa_probe, wdc_isa_attach 78 }; 79 80 static void wdc_isa_dma_setup __P((struct wdc_isa_softc *)); 81 static int wdc_isa_dma_init __P((void*, int, int, void *, size_t, int)); 82 static void wdc_isa_dma_start __P((void*, int, int)); 83 static int wdc_isa_dma_finish __P((void*, int, int, int)); 84 85 int 86 wdc_isa_probe(parent, match, aux) 87 struct device *parent; 88 struct cfdata *match; 89 void *aux; 90 { 91 struct channel_softc ch; 92 struct isa_attach_args *ia = aux; 93 int result = 0; 94 95 memset(&ch, 0, sizeof(ch)); 96 97 ch.cmd_iot = ia->ia_iot; 98 if (bus_space_map(ch.cmd_iot, ia->ia_iobase, WDC_ISA_REG_NPORTS, 0, 99 &ch.cmd_ioh)) 100 goto out; 101 102 ch.ctl_iot = ia->ia_iot; 103 if (bus_space_map(ch.ctl_iot, ia->ia_iobase + WDC_ISA_AUXREG_OFFSET, 104 WDC_ISA_AUXREG_NPORTS, 0, &ch.ctl_ioh)) 105 goto outunmap; 106 107 result = wdcprobe(&ch); 108 if (result) { 109 ia->ia_iosize = WDC_ISA_REG_NPORTS; 110 ia->ia_msize = 0; 111 } 112 113 bus_space_unmap(ch.ctl_iot, ch.ctl_ioh, WDC_ISA_AUXREG_NPORTS); 114 outunmap: 115 bus_space_unmap(ch.cmd_iot, ch.cmd_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->wdc_channel.cmd_iot = ia->ia_iot; 131 sc->wdc_channel.ctl_iot = ia->ia_iot; 132 sc->sc_ic = ia->ia_ic; 133 if (bus_space_map(sc->wdc_channel.cmd_iot, ia->ia_iobase, 134 WDC_ISA_REG_NPORTS, 0, &sc->wdc_channel.cmd_ioh) || 135 bus_space_map(sc->wdc_channel.ctl_iot, 136 ia->ia_iobase + WDC_ISA_AUXREG_OFFSET, WDC_ISA_AUXREG_NPORTS, 137 0, &sc->wdc_channel.ctl_ioh)) { 138 printf("%s: couldn't map registers\n", 139 sc->sc_wdcdev.sc_dev.dv_xname); 140 } 141 sc->wdc_channel.data32iot = sc->wdc_channel.cmd_iot; 142 sc->wdc_channel.data32ioh = sc->wdc_channel.cmd_ioh; 143 144 sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq, IST_EDGE, 145 IPL_BIO, wdcintr, &sc->wdc_channel); 146 147 if (ia->ia_drq != DRQUNK) { 148 sc->sc_drq = ia->ia_drq; 149 150 sc->sc_wdcdev.cap |= WDC_CAPABILITY_DMA; 151 sc->sc_wdcdev.dma_arg = sc; 152 sc->sc_wdcdev.dma_init = wdc_isa_dma_init; 153 sc->sc_wdcdev.dma_start = wdc_isa_dma_start; 154 sc->sc_wdcdev.dma_finish = wdc_isa_dma_finish; 155 wdc_isa_dma_setup(sc); 156 } 157 sc->sc_wdcdev.cap |= WDC_CAPABILITY_DATA16 | WDC_CAPABILITY_PREATA; 158 if (sc->sc_wdcdev.sc_dev.dv_cfdata->cf_flags & WDC_OPTIONS_32) 159 sc->sc_wdcdev.cap |= WDC_CAPABILITY_DATA32; 160 if (sc->sc_wdcdev.sc_dev.dv_cfdata->cf_flags & WDC_OPTIONS_SINGLE_DRIVE) 161 sc->sc_wdcdev.cap |= WDC_CAPABILITY_SINGLE_DRIVE; 162 if (sc->sc_wdcdev.sc_dev.dv_cfdata->cf_flags & WDC_OPTIONS_ATA_NOSTREAM) 163 sc->sc_wdcdev.cap |= WDC_CAPABILITY_ATA_NOSTREAM; 164 if (sc->sc_wdcdev.sc_dev.dv_cfdata->cf_flags 165 & WDC_OPTIONS_ATAPI_NOSTREAM) 166 sc->sc_wdcdev.cap |= WDC_CAPABILITY_ATAPI_NOSTREAM; 167 sc->sc_wdcdev.PIO_cap = 0; 168 sc->wdc_chanptr = &sc->wdc_channel; 169 sc->sc_wdcdev.channels = &sc->wdc_chanptr; 170 sc->sc_wdcdev.nchannels = 1; 171 sc->wdc_channel.channel = 0; 172 sc->wdc_channel.wdc = &sc->sc_wdcdev; 173 sc->wdc_channel.ch_queue = malloc(sizeof(struct channel_queue), 174 M_DEVBUF, M_NOWAIT); 175 if (sc->wdc_channel.ch_queue == NULL) { 176 printf("%s: can't allocate memory for command queue", 177 sc->sc_wdcdev.sc_dev.dv_xname); 178 return; 179 } 180 wdcattach(&sc->wdc_channel); 181 } 182 183 static void 184 wdc_isa_dma_setup(sc) 185 struct wdc_isa_softc *sc; 186 { 187 bus_size_t maxsize; 188 189 if ((maxsize = isa_dmamaxsize(sc->sc_ic, sc->sc_drq)) < MAXPHYS) { 190 printf("%s: max DMA size %lu is less than required %d\n", 191 sc->sc_wdcdev.sc_dev.dv_xname, (u_long)maxsize, MAXPHYS); 192 sc->sc_wdcdev.cap &= ~WDC_CAPABILITY_DMA; 193 return; 194 } 195 196 if (isa_dmamap_create(sc->sc_ic, sc->sc_drq, 197 MAXPHYS, BUS_DMA_NOWAIT|BUS_DMA_ALLOCNOW)) { 198 printf("%s: can't create map for drq %d\n", 199 sc->sc_wdcdev.sc_dev.dv_xname, sc->sc_drq); 200 sc->sc_wdcdev.cap &= ~WDC_CAPABILITY_DMA; 201 } 202 } 203 204 static int 205 wdc_isa_dma_init(v, channel, drive, databuf, datalen, read) 206 void *v; 207 void *databuf; 208 size_t datalen; 209 int read; 210 { 211 struct wdc_isa_softc *sc = v; 212 213 isa_dmastart(sc->sc_ic, sc->sc_drq, databuf, datalen, NULL, 214 (read ? DMAMODE_READ : DMAMODE_WRITE) | DMAMODE_DEMAND, 215 BUS_DMA_NOWAIT); 216 return 0; 217 } 218 219 static void 220 wdc_isa_dma_start(v, channel, drive) 221 void *v; 222 int channel, drive; 223 { 224 /* nothing to do */ 225 } 226 227 static int 228 wdc_isa_dma_finish(v, channel, drive, read) 229 void *v; 230 int channel, drive; 231 int read; 232 { 233 struct wdc_isa_softc *sc = v; 234 235 isa_dmadone(sc->sc_ic, sc->sc_drq); 236 return 0; 237 } 238
Indexes created Tue Sep 30 20:09:53 GMT 2025