wdc_isa.c revision 1.22
1 /* $NetBSD: wdc_isa.c,v 1.22 2001/11/13 08:01:33 lukem 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/cdefs.h> 40 __KERNEL_RCSID(0, "$NetBSD: wdc_isa.c,v 1.22 2001/11/13 08:01:33 lukem Exp $"); 41 42 #include <sys/types.h> 43 #include <sys/param.h> 44 #include <sys/systm.h> 45 #include <sys/device.h> 46 #include <sys/malloc.h> 47 48 #include <machine/bus.h> 49 #include <machine/intr.h> 50 51 #include <dev/isa/isavar.h> 52 #include <dev/isa/isadmavar.h> 53 54 #include <dev/ata/atavar.h> 55 #include <dev/ic/wdcvar.h> 56 57 #define WDC_ISA_REG_NPORTS 8 58 #define WDC_ISA_AUXREG_OFFSET 0x206 59 #define WDC_ISA_AUXREG_NPORTS 1 /* XXX "fdc" owns ports 0x3f7/0x377 */ 60 61 /* options passed via the 'flags' config keyword */ 62 #define WDC_OPTIONS_32 0x01 /* try to use 32bit data I/O */ 63 #define WDC_OPTIONS_SINGLE_DRIVE 0x02 /* Don't probe second drive */ 64 #define WDC_OPTIONS_ATA_NOSTREAM 0x04 65 #define WDC_OPTIONS_ATAPI_NOSTREAM 0x08 66 67 struct wdc_isa_softc { 68 struct wdc_softc sc_wdcdev; 69 struct channel_softc *wdc_chanptr; 70 struct channel_softc wdc_channel; 71 isa_chipset_tag_t sc_ic; 72 void *sc_ih; 73 int sc_drq; 74 }; 75 76 int wdc_isa_probe __P((struct device *, struct cfdata *, void *)); 77 void wdc_isa_attach __P((struct device *, struct device *, void *)); 78 79 struct cfattach wdc_isa_ca = { 80 sizeof(struct wdc_isa_softc), wdc_isa_probe, wdc_isa_attach 81 }; 82 83 static void wdc_isa_dma_setup __P((struct wdc_isa_softc *)); 84 static int wdc_isa_dma_init __P((void*, int, int, void *, size_t, int)); 85 static void wdc_isa_dma_start __P((void*, int, int)); 86 static int wdc_isa_dma_finish __P((void*, int, int, int)); 87 88 int 89 wdc_isa_probe(parent, match, aux) 90 struct device *parent; 91 struct cfdata *match; 92 void *aux; 93 { 94 struct channel_softc ch; 95 struct isa_attach_args *ia = aux; 96 int result = 0; 97 98 memset(&ch, 0, sizeof(ch)); 99 100 ch.cmd_iot = ia->ia_iot; 101 if (bus_space_map(ch.cmd_iot, ia->ia_iobase, WDC_ISA_REG_NPORTS, 0, 102 &ch.cmd_ioh)) 103 goto out; 104 105 ch.ctl_iot = ia->ia_iot; 106 if (bus_space_map(ch.ctl_iot, ia->ia_iobase + WDC_ISA_AUXREG_OFFSET, 107 WDC_ISA_AUXREG_NPORTS, 0, &ch.ctl_ioh)) 108 goto outunmap; 109 110 result = wdcprobe(&ch); 111 if (result) { 112 ia->ia_iosize = WDC_ISA_REG_NPORTS; 113 ia->ia_msize = 0; 114 } 115 116 bus_space_unmap(ch.ctl_iot, ch.ctl_ioh, WDC_ISA_AUXREG_NPORTS); 117 outunmap: 118 bus_space_unmap(ch.cmd_iot, ch.cmd_ioh, WDC_ISA_REG_NPORTS); 119 out: 120 return (result); 121 } 122 123 void 124 wdc_isa_attach(parent, self, aux) 125 struct device *parent, *self; 126 void *aux; 127 { 128 struct wdc_isa_softc *sc = (void *)self; 129 struct isa_attach_args *ia = aux; 130 131 printf("\n"); 132 133 sc->wdc_channel.cmd_iot = ia->ia_iot; 134 sc->wdc_channel.ctl_iot = ia->ia_iot; 135 sc->sc_ic = ia->ia_ic; 136 if (bus_space_map(sc->wdc_channel.cmd_iot, ia->ia_iobase, 137 WDC_ISA_REG_NPORTS, 0, &sc->wdc_channel.cmd_ioh) || 138 bus_space_map(sc->wdc_channel.ctl_iot, 139 ia->ia_iobase + WDC_ISA_AUXREG_OFFSET, WDC_ISA_AUXREG_NPORTS, 140 0, &sc->wdc_channel.ctl_ioh)) { 141 printf("%s: couldn't map registers\n", 142 sc->sc_wdcdev.sc_dev.dv_xname); 143 } 144 sc->wdc_channel.data32iot = sc->wdc_channel.cmd_iot; 145 sc->wdc_channel.data32ioh = sc->wdc_channel.cmd_ioh; 146 147 sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq, IST_EDGE, 148 IPL_BIO, wdcintr, &sc->wdc_channel); 149 150 if (ia->ia_drq != DRQUNK) { 151 sc->sc_drq = ia->ia_drq; 152 153 sc->sc_wdcdev.cap |= WDC_CAPABILITY_DMA; 154 sc->sc_wdcdev.dma_arg = sc; 155 sc->sc_wdcdev.dma_init = wdc_isa_dma_init; 156 sc->sc_wdcdev.dma_start = wdc_isa_dma_start; 157 sc->sc_wdcdev.dma_finish = wdc_isa_dma_finish; 158 wdc_isa_dma_setup(sc); 159 } 160 sc->sc_wdcdev.cap |= WDC_CAPABILITY_DATA16 | WDC_CAPABILITY_PREATA; 161 if (sc->sc_wdcdev.sc_dev.dv_cfdata->cf_flags & WDC_OPTIONS_32) 162 sc->sc_wdcdev.cap |= WDC_CAPABILITY_DATA32; 163 if (sc->sc_wdcdev.sc_dev.dv_cfdata->cf_flags & WDC_OPTIONS_SINGLE_DRIVE) 164 sc->sc_wdcdev.cap |= WDC_CAPABILITY_SINGLE_DRIVE; 165 if (sc->sc_wdcdev.sc_dev.dv_cfdata->cf_flags & WDC_OPTIONS_ATA_NOSTREAM) 166 sc->sc_wdcdev.cap |= WDC_CAPABILITY_ATA_NOSTREAM; 167 if (sc->sc_wdcdev.sc_dev.dv_cfdata->cf_flags 168 & WDC_OPTIONS_ATAPI_NOSTREAM) 169 sc->sc_wdcdev.cap |= WDC_CAPABILITY_ATAPI_NOSTREAM; 170 sc->sc_wdcdev.PIO_cap = 0; 171 sc->wdc_chanptr = &sc->wdc_channel; 172 sc->sc_wdcdev.channels = &sc->wdc_chanptr; 173 sc->sc_wdcdev.nchannels = 1; 174 sc->wdc_channel.channel = 0; 175 sc->wdc_channel.wdc = &sc->sc_wdcdev; 176 sc->wdc_channel.ch_queue = malloc(sizeof(struct channel_queue), 177 M_DEVBUF, M_NOWAIT); 178 if (sc->wdc_channel.ch_queue == NULL) { 179 printf("%s: can't allocate memory for command queue", 180 sc->sc_wdcdev.sc_dev.dv_xname); 181 return; 182 } 183 wdcattach(&sc->wdc_channel); 184 } 185 186 static void 187 wdc_isa_dma_setup(sc) 188 struct wdc_isa_softc *sc; 189 { 190 bus_size_t maxsize; 191 192 if ((maxsize = isa_dmamaxsize(sc->sc_ic, sc->sc_drq)) < MAXPHYS) { 193 printf("%s: max DMA size %lu is less than required %d\n", 194 sc->sc_wdcdev.sc_dev.dv_xname, (u_long)maxsize, MAXPHYS); 195 sc->sc_wdcdev.cap &= ~WDC_CAPABILITY_DMA; 196 return; 197 } 198 199 if (isa_dmamap_create(sc->sc_ic, sc->sc_drq, 200 MAXPHYS, BUS_DMA_NOWAIT|BUS_DMA_ALLOCNOW)) { 201 printf("%s: can't create map for drq %d\n", 202 sc->sc_wdcdev.sc_dev.dv_xname, sc->sc_drq); 203 sc->sc_wdcdev.cap &= ~WDC_CAPABILITY_DMA; 204 } 205 } 206 207 static int 208 wdc_isa_dma_init(v, channel, drive, databuf, datalen, read) 209 void *v; 210 void *databuf; 211 size_t datalen; 212 int read; 213 { 214 struct wdc_isa_softc *sc = v; 215 216 isa_dmastart(sc->sc_ic, sc->sc_drq, databuf, datalen, NULL, 217 (read ? DMAMODE_READ : DMAMODE_WRITE) | DMAMODE_DEMAND, 218 BUS_DMA_NOWAIT); 219 return 0; 220 } 221 222 static void 223 wdc_isa_dma_start(v, channel, drive) 224 void *v; 225 int channel, drive; 226 { 227 /* nothing to do */ 228 } 229 230 static int 231 wdc_isa_dma_finish(v, channel, drive, read) 232 void *v; 233 int channel, drive; 234 int read; 235 { 236 struct wdc_isa_softc *sc = v; 237 238 isa_dmadone(sc->sc_ic, sc->sc_drq); 239 return 0; 240 } 241
Indexes created Tue Sep 30 20:09:53 GMT 2025