wdc_isa.c revision 1.28
1 /* $NetBSD: wdc_isa.c,v 1.28 2002/10/02 03:10:50 thorpej 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 1.28 2002/10/02 03:10:50 thorpej Exp $"); 41 42 #include <sys/param.h> 43 #include <sys/systm.h> 44 #include <sys/device.h> 45 #include <sys/malloc.h> 46 47 #include <machine/bus.h> 48 #include <machine/intr.h> 49 50 #include <dev/isa/isavar.h> 51 #include <dev/isa/isadmavar.h> 52 53 #include <dev/ata/atavar.h> 54 #include <dev/ic/wdcvar.h> 55 56 #define WDC_ISA_REG_NPORTS 8 57 #define WDC_ISA_AUXREG_OFFSET 0x206 58 #define WDC_ISA_AUXREG_NPORTS 1 /* XXX "fdc" owns ports 0x3f7/0x377 */ 59 60 /* options passed via the 'flags' config keyword */ 61 #define WDC_OPTIONS_32 0x01 /* try to use 32bit data I/O */ 62 #define WDC_OPTIONS_SINGLE_DRIVE 0x02 /* Don't probe second drive */ 63 #define WDC_OPTIONS_ATA_NOSTREAM 0x04 64 #define WDC_OPTIONS_ATAPI_NOSTREAM 0x08 65 66 struct wdc_isa_softc { 67 struct wdc_softc sc_wdcdev; 68 struct channel_softc *wdc_chanptr; 69 struct channel_softc wdc_channel; 70 isa_chipset_tag_t sc_ic; 71 void *sc_ih; 72 int sc_drq; 73 }; 74 75 int wdc_isa_probe __P((struct device *, struct cfdata *, void *)); 76 void wdc_isa_attach __P((struct device *, struct device *, void *)); 77 78 CFATTACH_DECL(wdc_isa, sizeof(struct wdc_isa_softc), 79 wdc_isa_probe, wdc_isa_attach, NULL, NULL); 80 81 static void wdc_isa_dma_setup __P((struct wdc_isa_softc *)); 82 static int wdc_isa_dma_init __P((void*, int, int, void *, size_t, int)); 83 static void wdc_isa_dma_start __P((void*, int, int)); 84 static int wdc_isa_dma_finish __P((void*, int, int, int)); 85 86 int 87 wdc_isa_probe(parent, match, aux) 88 struct device *parent; 89 struct cfdata *match; 90 void *aux; 91 { 92 struct channel_softc ch; 93 struct isa_attach_args *ia = aux; 94 int result = 0; 95 96 if (ia->ia_nio < 1) 97 return (0); 98 if (ia->ia_nirq < 1) 99 return (0); 100 101 if (ISA_DIRECT_CONFIG(ia)) 102 return (0); 103 104 if (ia->ia_io[0].ir_addr == ISACF_PORT_DEFAULT) 105 return (0); 106 if (ia->ia_irq[0].ir_irq == ISACF_IRQ_DEFAULT) 107 return (0); 108 if (ia->ia_ndrq > 0 && ia->ia_drq[0].ir_drq == ISACF_DRQ_DEFAULT) 109 ia->ia_ndrq = 0; 110 111 memset(&ch, 0, sizeof(ch)); 112 113 ch.cmd_iot = ia->ia_iot; 114 115 if (bus_space_map(ch.cmd_iot, ia->ia_io[0].ir_addr, 116 WDC_ISA_REG_NPORTS, 0, &ch.cmd_ioh)) 117 goto out; 118 119 ch.ctl_iot = ia->ia_iot; 120 if (bus_space_map(ch.ctl_iot, ia->ia_io[0].ir_addr + 121 WDC_ISA_AUXREG_OFFSET, WDC_ISA_AUXREG_NPORTS, 0, &ch.ctl_ioh)) 122 goto outunmap; 123 124 result = wdcprobe(&ch); 125 if (result) { 126 ia->ia_nio = 1; 127 ia->ia_io[0].ir_size = WDC_ISA_REG_NPORTS; 128 129 ia->ia_nirq = 1; 130 131 ia->ia_niomem = 0; 132 } 133 134 bus_space_unmap(ch.ctl_iot, ch.ctl_ioh, WDC_ISA_AUXREG_NPORTS); 135 outunmap: 136 bus_space_unmap(ch.cmd_iot, ch.cmd_ioh, WDC_ISA_REG_NPORTS); 137 out: 138 return (result); 139 } 140 141 void 142 wdc_isa_attach(parent, self, aux) 143 struct device *parent, *self; 144 void *aux; 145 { 146 struct wdc_isa_softc *sc = (void *)self; 147 struct isa_attach_args *ia = aux; 148 149 printf("\n"); 150 151 sc->wdc_channel.cmd_iot = ia->ia_iot; 152 sc->wdc_channel.ctl_iot = ia->ia_iot; 153 sc->sc_ic = ia->ia_ic; 154 if (bus_space_map(sc->wdc_channel.cmd_iot, ia->ia_io[0].ir_addr, 155 WDC_ISA_REG_NPORTS, 0, &sc->wdc_channel.cmd_ioh) || 156 bus_space_map(sc->wdc_channel.ctl_iot, 157 ia->ia_io[0].ir_addr + WDC_ISA_AUXREG_OFFSET, 158 WDC_ISA_AUXREG_NPORTS, 0, &sc->wdc_channel.ctl_ioh)) { 159 printf("%s: couldn't map registers\n", 160 sc->sc_wdcdev.sc_dev.dv_xname); 161 } 162 sc->wdc_channel.data32iot = sc->wdc_channel.cmd_iot; 163 sc->wdc_channel.data32ioh = sc->wdc_channel.cmd_ioh; 164 165 sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq[0].ir_irq, 166 IST_EDGE, IPL_BIO, wdcintr, &sc->wdc_channel); 167 168 if (ia->ia_ndrq > 0 && ia->ia_drq[0].ir_drq != ISACF_DRQ_DEFAULT) { 169 sc->sc_drq = ia->ia_drq[0].ir_drq; 170 171 sc->sc_wdcdev.cap |= WDC_CAPABILITY_DMA; 172 sc->sc_wdcdev.dma_arg = sc; 173 sc->sc_wdcdev.dma_init = wdc_isa_dma_init; 174 sc->sc_wdcdev.dma_start = wdc_isa_dma_start; 175 sc->sc_wdcdev.dma_finish = wdc_isa_dma_finish; 176 wdc_isa_dma_setup(sc); 177 } 178 sc->sc_wdcdev.cap |= WDC_CAPABILITY_DATA16 | WDC_CAPABILITY_PREATA; 179 if (sc->sc_wdcdev.sc_dev.dv_cfdata->cf_flags & WDC_OPTIONS_32) 180 sc->sc_wdcdev.cap |= WDC_CAPABILITY_DATA32; 181 if (sc->sc_wdcdev.sc_dev.dv_cfdata->cf_flags & WDC_OPTIONS_SINGLE_DRIVE) 182 sc->sc_wdcdev.cap |= WDC_CAPABILITY_SINGLE_DRIVE; 183 if (sc->sc_wdcdev.sc_dev.dv_cfdata->cf_flags & WDC_OPTIONS_ATA_NOSTREAM) 184 sc->sc_wdcdev.cap |= WDC_CAPABILITY_ATA_NOSTREAM; 185 if (sc->sc_wdcdev.sc_dev.dv_cfdata->cf_flags 186 & WDC_OPTIONS_ATAPI_NOSTREAM) 187 sc->sc_wdcdev.cap |= WDC_CAPABILITY_ATAPI_NOSTREAM; 188 sc->sc_wdcdev.PIO_cap = 0; 189 sc->wdc_chanptr = &sc->wdc_channel; 190 sc->sc_wdcdev.channels = &sc->wdc_chanptr; 191 sc->sc_wdcdev.nchannels = 1; 192 sc->wdc_channel.channel = 0; 193 sc->wdc_channel.wdc = &sc->sc_wdcdev; 194 sc->wdc_channel.ch_queue = malloc(sizeof(struct channel_queue), 195 M_DEVBUF, M_NOWAIT); 196 if (sc->wdc_channel.ch_queue == NULL) { 197 printf("%s: can't allocate memory for command queue", 198 sc->sc_wdcdev.sc_dev.dv_xname); 199 return; 200 } 201 wdcattach(&sc->wdc_channel); 202 } 203 204 static void 205 wdc_isa_dma_setup(sc) 206 struct wdc_isa_softc *sc; 207 { 208 bus_size_t maxsize; 209 210 if ((maxsize = isa_dmamaxsize(sc->sc_ic, sc->sc_drq)) < MAXPHYS) { 211 printf("%s: max DMA size %lu is less than required %d\n", 212 sc->sc_wdcdev.sc_dev.dv_xname, (u_long)maxsize, MAXPHYS); 213 sc->sc_wdcdev.cap &= ~WDC_CAPABILITY_DMA; 214 return; 215 } 216 217 if (isa_dmamap_create(sc->sc_ic, sc->sc_drq, 218 MAXPHYS, BUS_DMA_NOWAIT|BUS_DMA_ALLOCNOW)) { 219 printf("%s: can't create map for drq %d\n", 220 sc->sc_wdcdev.sc_dev.dv_xname, sc->sc_drq); 221 sc->sc_wdcdev.cap &= ~WDC_CAPABILITY_DMA; 222 } 223 } 224 225 static int 226 wdc_isa_dma_init(v, channel, drive, databuf, datalen, read) 227 void *v; 228 void *databuf; 229 size_t datalen; 230 int read; 231 { 232 struct wdc_isa_softc *sc = v; 233 234 isa_dmastart(sc->sc_ic, sc->sc_drq, databuf, datalen, NULL, 235 (read ? DMAMODE_READ : DMAMODE_WRITE) | DMAMODE_DEMAND, 236 BUS_DMA_NOWAIT); 237 return 0; 238 } 239 240 static void 241 wdc_isa_dma_start(v, channel, drive) 242 void *v; 243 int channel, drive; 244 { 245 /* nothing to do */ 246 } 247 248 static int 249 wdc_isa_dma_finish(v, channel, drive, read) 250 void *v; 251 int channel, drive; 252 int read; 253 { 254 struct wdc_isa_softc *sc = v; 255 256 isa_dmadone(sc->sc_ic, sc->sc_drq); 257 return 0; 258 } 259
Indexes created Tue Sep 30 20:09:53 GMT 2025