wdc_isa.c revision 1.43
1 /* $NetBSD: wdc_isa.c,v 1.43 2004/08/16 14:47:31 mycroft Exp $ */ 2 3 /*- 4 * Copyright (c) 1998, 2003 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 1.43 2004/08/16 14:47:31 mycroft 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/ic/wdcreg.h> 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_ATA_NOSTREAM 0x04 64 #define WDC_OPTIONS_ATAPI_NOSTREAM 0x08 65 66 struct wdc_isa_softc { 67 struct wdc_softc sc_wdcdev; 68 struct ata_channel *wdc_chanlist[1]; 69 struct ata_channel ata_channel; 70 struct ata_queue wdc_chqueue; 71 struct wdc_regs wdc_regs; 72 isa_chipset_tag_t sc_ic; 73 void *sc_ih; 74 int sc_drq; 75 }; 76 77 int wdc_isa_probe __P((struct device *, struct cfdata *, void *)); 78 void wdc_isa_attach __P((struct device *, struct device *, void *)); 79 80 CFATTACH_DECL(wdc_isa, sizeof(struct wdc_isa_softc), 81 wdc_isa_probe, wdc_isa_attach, NULL, NULL); 82 83 #if 0 84 static void wdc_isa_dma_setup __P((struct wdc_isa_softc *)); 85 static int wdc_isa_dma_init __P((void*, int, int, void *, size_t, int)); 86 static void wdc_isa_dma_start __P((void*, int, int)); 87 static int wdc_isa_dma_finish __P((void*, int, int, int)); 88 #endif 89 90 int 91 wdc_isa_probe(parent, match, aux) 92 struct device *parent; 93 struct cfdata *match; 94 void *aux; 95 { 96 struct ata_channel ch; 97 struct isa_attach_args *ia = aux; 98 struct wdc_softc wdc; 99 struct wdc_regs wdr; 100 int result = 0, i; 101 102 if (ia->ia_nio < 1) 103 return (0); 104 if (ia->ia_nirq < 1) 105 return (0); 106 107 if (ISA_DIRECT_CONFIG(ia)) 108 return (0); 109 110 if (ia->ia_io[0].ir_addr == ISACF_PORT_DEFAULT) 111 return (0); 112 if (ia->ia_irq[0].ir_irq == ISACF_IRQ_DEFAULT) 113 return (0); 114 if (ia->ia_ndrq > 0 && ia->ia_drq[0].ir_drq == ISACF_DRQ_DEFAULT) 115 ia->ia_ndrq = 0; 116 117 memset(&wdc, 0, sizeof(wdc)); 118 memset(&ch, 0, sizeof(ch)); 119 ch.ch_wdc = &wdc; 120 wdc.regs = &wdr; 121 122 wdr.cmd_iot = ia->ia_iot; 123 124 if (bus_space_map(wdr.cmd_iot, ia->ia_io[0].ir_addr, 125 WDC_ISA_REG_NPORTS, 0, &wdr.cmd_baseioh)) 126 goto out; 127 128 for (i = 0; i < WDC_ISA_REG_NPORTS; i++) { 129 if (bus_space_subregion(wdr.cmd_iot, wdr.cmd_baseioh, i, 130 i == 0 ? 4 : 1, &wdr.cmd_iohs[i]) != 0) 131 goto outunmap; 132 } 133 wdc_init_shadow_regs(&ch); 134 135 wdr.ctl_iot = ia->ia_iot; 136 if (bus_space_map(wdr.ctl_iot, ia->ia_io[0].ir_addr + 137 WDC_ISA_AUXREG_OFFSET, WDC_ISA_AUXREG_NPORTS, 0, &wdr.ctl_ioh)) 138 goto outunmap; 139 140 result = wdcprobe(&ch); 141 if (result) { 142 ia->ia_nio = 1; 143 ia->ia_io[0].ir_size = WDC_ISA_REG_NPORTS; 144 145 ia->ia_nirq = 1; 146 147 ia->ia_niomem = 0; 148 } 149 150 bus_space_unmap(wdr.ctl_iot, wdr.ctl_ioh, WDC_ISA_AUXREG_NPORTS); 151 outunmap: 152 bus_space_unmap(wdr.cmd_iot, wdr.cmd_baseioh, WDC_ISA_REG_NPORTS); 153 out: 154 return (result); 155 } 156 157 void 158 wdc_isa_attach(parent, self, aux) 159 struct device *parent, *self; 160 void *aux; 161 { 162 struct wdc_isa_softc *sc = (void *)self; 163 struct wdc_regs *wdr; 164 struct isa_attach_args *ia = aux; 165 int wdc_cf_flags = self->dv_cfdata->cf_flags; 166 int i; 167 168 sc->sc_wdcdev.regs = wdr = &sc->wdc_regs; 169 wdr->cmd_iot = ia->ia_iot; 170 wdr->ctl_iot = ia->ia_iot; 171 sc->sc_ic = ia->ia_ic; 172 if (bus_space_map(wdr->cmd_iot, ia->ia_io[0].ir_addr, 173 WDC_ISA_REG_NPORTS, 0, &wdr->cmd_baseioh) || 174 bus_space_map(wdr->ctl_iot, 175 ia->ia_io[0].ir_addr + WDC_ISA_AUXREG_OFFSET, 176 WDC_ISA_AUXREG_NPORTS, 0, &wdr->ctl_ioh)) { 177 printf(": couldn't map registers\n"); 178 return; 179 } 180 181 for (i = 0; i < WDC_ISA_REG_NPORTS; i++) { 182 if (bus_space_subregion(wdr->cmd_iot, 183 wdr->cmd_baseioh, i, i == 0 ? 4 : 1, 184 &wdr->cmd_iohs[i]) != 0) { 185 printf(": couldn't subregion registers\n"); 186 return; 187 } 188 } 189 190 wdr->data32iot = wdr->cmd_iot; 191 wdr->data32ioh = wdr->cmd_iohs[0]; 192 193 #if 0 194 if (ia->ia_ndrq > 0 && ia->ia_drq[0].ir_drq != ISACF_DRQ_DEFAULT) { 195 sc->sc_drq = ia->ia_drq[0].ir_drq; 196 197 sc->sc_wdcdev.cap |= WDC_CAPABILITY_DMA; 198 sc->sc_wdcdev.dma_arg = sc; 199 sc->sc_wdcdev.dma_init = wdc_isa_dma_init; 200 sc->sc_wdcdev.dma_start = wdc_isa_dma_start; 201 sc->sc_wdcdev.dma_finish = wdc_isa_dma_finish; 202 wdc_isa_dma_setup(sc); 203 } 204 #endif 205 sc->sc_wdcdev.cap |= WDC_CAPABILITY_DATA16 | WDC_CAPABILITY_PREATA; 206 if (wdc_cf_flags & WDC_OPTIONS_32) 207 sc->sc_wdcdev.cap |= WDC_CAPABILITY_DATA32; 208 if (wdc_cf_flags & WDC_OPTIONS_ATA_NOSTREAM) 209 sc->sc_wdcdev.cap |= WDC_CAPABILITY_ATA_NOSTREAM; 210 if (wdc_cf_flags & WDC_OPTIONS_ATAPI_NOSTREAM) 211 sc->sc_wdcdev.cap |= WDC_CAPABILITY_ATAPI_NOSTREAM; 212 213 sc->sc_wdcdev.PIO_cap = 0; 214 sc->wdc_chanlist[0] = &sc->ata_channel; 215 sc->sc_wdcdev.channels = sc->wdc_chanlist; 216 sc->sc_wdcdev.nchannels = 1; 217 sc->ata_channel.ch_channel = 0; 218 sc->ata_channel.ch_wdc = &sc->sc_wdcdev; 219 sc->ata_channel.ch_queue = &sc->wdc_chqueue; 220 wdc_init_shadow_regs(&sc->ata_channel); 221 222 printf("\n"); 223 224 sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq[0].ir_irq, 225 IST_EDGE, IPL_BIO, wdcintr, &sc->ata_channel); 226 227 wdcattach(&sc->ata_channel); 228 } 229 230 #if 0 231 static void 232 wdc_isa_dma_setup(sc) 233 struct wdc_isa_softc *sc; 234 { 235 bus_size_t maxsize; 236 237 if ((maxsize = isa_dmamaxsize(sc->sc_ic, sc->sc_drq)) < MAXPHYS) { 238 printf("%s: max DMA size %lu is less than required %d\n", 239 sc->sc_wdcdev.sc_dev.dv_xname, (u_long)maxsize, MAXPHYS); 240 sc->sc_wdcdev.cap &= ~WDC_CAPABILITY_DMA; 241 return; 242 } 243 244 if (isa_drq_alloc(sc->sc_ic, sc->sc_drq) != 0) { 245 printf("%s: can't reserve drq %d\n", 246 sc->sc_wdcdev.sc_dev.dv_xname, sc->sc_drq); 247 sc->sc_wdcdev.cap &= ~WDC_CAPABILITY_DMA; 248 return; 249 } 250 251 if (isa_dmamap_create(sc->sc_ic, sc->sc_drq, 252 MAXPHYS, BUS_DMA_NOWAIT|BUS_DMA_ALLOCNOW)) { 253 printf("%s: can't create map for drq %d\n", 254 sc->sc_wdcdev.sc_dev.dv_xname, sc->sc_drq); 255 sc->sc_wdcdev.cap &= ~WDC_CAPABILITY_DMA; 256 } 257 } 258 259 static int 260 wdc_isa_dma_init(v, channel, drive, databuf, datalen, read) 261 void *v; 262 void *databuf; 263 size_t datalen; 264 int read; 265 { 266 struct wdc_isa_softc *sc = v; 267 268 isa_dmastart(sc->sc_ic, sc->sc_drq, databuf, datalen, NULL, 269 (read ? DMAMODE_READ : DMAMODE_WRITE) | DMAMODE_DEMAND, 270 BUS_DMA_NOWAIT); 271 return 0; 272 } 273 274 static void 275 wdc_isa_dma_start(v, channel, drive) 276 void *v; 277 int channel, drive; 278 { 279 /* nothing to do */ 280 } 281 282 static int 283 wdc_isa_dma_finish(v, channel, drive, read) 284 void *v; 285 int channel, drive; 286 int read; 287 { 288 struct wdc_isa_softc *sc = v; 289 290 isa_dmadone(sc->sc_ic, sc->sc_drq); 291 return 0; 292 } 293 #endif 294
Indexes created Tue Sep 30 20:09:53 GMT 2025