wdc_extio.c revision 1.1
1 /* $NetBSD: wdc_extio.c,v 1.1 2007/03/20 08:52:02 dyoung Exp $ */ 2 3 /*- 4 * Copyright (c) 2007 David Young. All rights reserved. 5 * 6 * CompactFlash attachment for RouterBoard 153. Derived from 7 * the NetBSD/mac68k OBIO-IDE attachment. 8 * 9 * Redistribution and use in source and binary forms, with or 10 * without modification, are permitted provided that the following 11 * conditions are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above 15 * copyright notice, this list of conditions and the following 16 * disclaimer in the documentation and/or other materials provided 17 * with the distribution. 18 * 3. The name of the author may not be used to endorse or promote 19 * products derived from this software without specific prior 20 * written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY 23 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 24 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A 25 * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR 26 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, 27 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 28 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, 29 * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 30 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR 31 * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 32 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY 33 * OF SUCH DAMAGE. 34 */ 35 /* 36 * Copyright (c) 2002 Takeshi Shibagaki All rights reserved. 37 * 38 * mac68k OBIO-IDE attachment created by Takeshi Shibagaki 39 * 40 * Redistribution and use in source and binary forms, with or without 41 * modification, are permitted provided that the following conditions 42 * are met: 43 * 1. Redistributions of source code must retain the above copyright 44 * notice, this list of conditions and the following disclaimer. 45 * 2. Redistributions in binary form must reproduce the above copyright 46 * notice, this list of conditions and the following disclaimer in the 47 * documentation and/or other materials provided with the distribution. 48 * 3. All advertising materials mentioning features or use of this software 49 * must display the following acknowledgement: 50 * This product includes software developed by Charles M. Hannum. 51 * 4. The name of the author may not be used to endorse or promote products 52 * derived from this software without specific prior written permission. 53 * 54 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 55 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 56 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 57 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 58 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 59 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 60 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 61 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 62 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 63 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 64 */ 65 66 #include <sys/cdefs.h> 67 __KERNEL_RCSID(0, "$NetBSD: wdc_extio.c,v 1.1 2007/03/20 08:52:02 dyoung Exp $"); 68 69 #include <sys/types.h> 70 #include <sys/param.h> 71 #include <sys/systm.h> 72 #include <sys/device.h> 73 #include <sys/malloc.h> 74 #include <sys/kernel.h> 75 #include <sys/callout.h> 76 77 #include <machine/bus.h> 78 #include <machine/intr.h> 79 #include <machine/cpu.h> 80 81 #include <mips/adm5120/include/adm5120_extiovar.h> 82 83 #include <dev/ata/atareg.h> 84 #include <dev/ata/atavar.h> 85 #include <dev/ic/wdcvar.h> 86 87 #ifdef WDC_EXTIO_DEBUG 88 int wdc_extio_debug = 1; 89 #define WDC_EXTIO_DPRINTF(__fmt, ...) \ 90 do { \ 91 if (wdc_extio_debug) \ 92 printf((__fmt), __VA_ARGS__); \ 93 } while (/*CONSTCOND*/0) 94 #else /* !WDC_EXTIO_DEBUG */ 95 #define WDC_EXTIO_DPRINTF(__fmt, ...) do { } while (/*CONSTCOND*/0) 96 #endif /* WDC_EXTIO_DEBUG */ 97 98 #define WDC_OBIO_CF_WINSIZE 0x1000 99 #define WDC_OBIO_REG_OFFSET 0x0800 100 #define WDC_OBIO_DATA_OFFSET 0x0808 101 #define WDC_OBIO_AUXREG_OFFSET 0x080e 102 103 struct wdc_extio_softc { 104 struct wdc_softc sc_wdcdev; 105 struct ata_channel *sc_chanlist[1]; 106 struct ata_channel sc_channel; 107 struct ata_queue sc_chqueue; 108 struct wdc_regs sc_wdc_regs; 109 void *sc_gpio; 110 int sc_map; 111 struct gpio_pinmap sc_pinmap; 112 }; 113 114 int wdc_extio_match(struct device *, struct cfdata *, void *); 115 void wdc_extio_attach(struct device *, struct device *, void *); 116 117 CFATTACH_DECL(wdc_extio, sizeof(struct wdc_extio_softc), 118 wdc_extio_match, wdc_extio_attach, NULL, NULL); 119 120 #if 0 121 void wdc_extio_reset(struct ata_channel *, int); 122 void 123 wdc_extio_reset(struct ata_channel *chp, int poll) 124 { 125 struct wdc_softc *wdc = CHAN_TO_WDC(chp); 126 struct wdc_regs *wdr = &wdc->regs[chp->ch_channel]; 127 uint8_t st0; 128 int i, s = 0; 129 130 if (poll) 131 s = splbio(); 132 if (wdc->select) 133 wdc->select(chp,0); 134 /* assert SRST, wait for reset to complete */ 135 bus_space_write_1(wdr->ctl_iot, wdr->ctl_ioh, wd_aux_ctlr, WDCTL_RST); 136 delay(2000); 137 (void) bus_space_read_1(wdr->cmd_iot, wdr->cmd_iohs[wd_error], 0); 138 bus_space_write_1(wdr->ctl_iot, wdr->ctl_ioh, wd_aux_ctlr, 0); 139 delay(10); /* 400ns delay */ 140 for (i = 3100000; --i > 0; ) { 141 st0 = bus_space_read_1(wdr->cmd_iot, 142 wdr->cmd_iohs[wd_status], 0); 143 if ((st0 & WDCS_BSY) == 0) 144 break; 145 delay(10); 146 } 147 if (i == 0) 148 printf("%s: reset failed\n", __func__); 149 else 150 WDC_EXTIO_DPRINTF("%s: reset in %d.%02dms\n", __func__, 151 (3100000 - i) / 100, 152 (3100000 - i) % 100); 153 154 if (poll) { 155 /* ACK interrupt in case there is one pending left */ 156 if (wdc->irqack) 157 wdc->irqack(chp); 158 splx(s); 159 } 160 } 161 #endif 162 163 static int 164 wdc_extio_map(struct extio_attach_args *ea, struct wdc_regs *wdr, 165 struct ata_channel *chp, void **gpio, struct gpio_pinmap *pinmap) 166 { 167 int i; 168 169 *gpio = ea->ea_gpio; 170 wdr->cmd_iot = wdr->ctl_iot = ea->ea_st; 171 172 #if 0 173 if (gpio_pin_map(ea->ea_gpio, 0, ea->ea_gpio_mask, pinmap) != 0) { 174 printf("%s: couldn't map GPIO\n", __func__); 175 return -1; 176 } 177 #endif 178 179 if (bus_space_map(wdr->cmd_iot, ea->ea_addr, WDC_OBIO_CF_WINSIZE, 0, 180 &wdr->cmd_baseioh)) { 181 printf("%s: couldn't map registers\n", __func__); 182 goto post_gpio_err; 183 } 184 185 for (i = 1; i < WDC_NREG; i++) { 186 if (bus_space_subregion(wdr->cmd_iot, wdr->cmd_baseioh, 187 WDC_OBIO_REG_OFFSET + i, 1, 188 &wdr->cmd_iohs[i]) != 0) { 189 printf("%s: unable to subregion control register\n", 190 __func__); 191 goto post_bus_err; 192 } 193 } 194 if (bus_space_subregion(wdr->cmd_iot, wdr->cmd_baseioh, 195 WDC_OBIO_DATA_OFFSET, 2, 196 &wdr->cmd_iohs[wd_data]) != 0) { 197 printf("%s: unable to subregion data register\n", __func__); 198 goto post_bus_err; 199 } 200 if (bus_space_subregion(wdr->cmd_iot, wdr->cmd_baseioh, 201 WDC_OBIO_AUXREG_OFFSET, 1, &wdr->ctl_ioh)) { 202 printf("%s: unable to subregion aux register\n", __func__); 203 goto post_bus_err; 204 } 205 206 wdc_init_shadow_regs(chp); 207 208 return 0; 209 post_bus_err: 210 bus_space_unmap(wdr->cmd_iot, wdr->cmd_baseioh, WDC_OBIO_CF_WINSIZE); 211 post_gpio_err: 212 #if 0 213 gpio_pin_unmap(ea->ea_gpio, pinmap); 214 #endif 215 return -1; 216 } 217 218 static void 219 wdc_extio_dataout(struct ata_channel *chp, int flags, void *bf, size_t len) 220 { 221 struct wdc_regs *wdr = CHAN_TO_WDC_REGS(chp); 222 223 bus_space_write_multi_1( 224 wdr->cmd_iot, wdr->cmd_iohs[wd_data], 0, bf, len); 225 } 226 227 static void 228 wdc_extio_datain(struct ata_channel *chp, int flags, void *bf, size_t len) 229 { 230 struct wdc_regs *wdr = CHAN_TO_WDC_REGS(chp); 231 232 bus_space_read_multi_1( 233 wdr->cmd_iot, wdr->cmd_iohs[wd_data], 0, bf, len); 234 } 235 236 int 237 wdc_extio_match(struct device *parent, struct cfdata *cf, void *aux) 238 { 239 struct extio_attach_args *ea = (struct extio_attach_args *)aux; 240 struct ata_channel ch; 241 struct wdc_softc wdc; 242 struct wdc_regs wdr; 243 int result = 0; 244 void *gpio; 245 int map; 246 struct gpio_pinmap pm = {.pm_map = &map}; 247 248 if (strcmp(ea->ea_name, cf->cf_name) != 0) 249 return 0; 250 251 WDC_EXTIO_DPRINTF("%s: enter\n", __func__); 252 253 memset(&wdc, 0, sizeof(wdc)); 254 memset(&ch, 0, sizeof(ch)); 255 ch.ch_atac = &wdc.sc_atac; 256 wdc.regs = &wdr; 257 wdc.datain_pio = wdc_extio_datain; 258 wdc.dataout_pio = wdc_extio_dataout; 259 if (cf->cf_flags != -1) { 260 wdc.sc_atac.atac_cap |= cf->cf_flags & 261 (ATAC_CAP_NOIRQ|ATAC_CAP_DATA32|ATAC_CAP_DATA16); 262 wdc.cap |= cf->cf_flags & 263 (WDC_CAPABILITY_PREATA|WDC_CAPABILITY_NO_EXTRA_RESETS); 264 } 265 266 if (wdc_extio_map(ea, &wdr, &ch, &gpio, &pm) == -1) 267 return 0; 268 269 result = wdcprobe(&ch); 270 271 bus_space_unmap(wdr.cmd_iot, wdr.cmd_baseioh, WDC_OBIO_CF_WINSIZE); 272 #if 0 273 gpio_pin_unmap(ea->ea_gpio, &pm); 274 #endif 275 276 return result; 277 } 278 279 void 280 wdc_extio_attach(struct device *parent, struct device *self, void *aux) 281 { 282 struct wdc_extio_softc *sc = (void *)self; 283 struct wdc_regs *wdr; 284 struct extio_attach_args *ea = aux; 285 struct ata_channel *chp = &sc->sc_channel; 286 struct cfdata *cf; 287 288 WDC_EXTIO_DPRINTF("%s: enter\n", __func__); 289 290 sc->sc_pinmap.pm_map = &sc->sc_map; 291 sc->sc_wdcdev.regs = wdr = &sc->sc_wdc_regs; 292 chp->ch_atac = &sc->sc_wdcdev.sc_atac; 293 294 if (wdc_extio_map(ea, wdr, chp, &sc->sc_gpio, &sc->sc_pinmap) == -1) 295 return; 296 297 cf = device_cfdata(&sc->sc_wdcdev.sc_atac.atac_dev); 298 if (cf->cf_flags != -1) { 299 printf(" flags %04x", cf->cf_flags); 300 sc->sc_wdcdev.sc_atac.atac_cap |= cf->cf_flags & 301 (ATAC_CAP_NOIRQ|ATAC_CAP_DATA32|ATAC_CAP_DATA16); 302 sc->sc_wdcdev.cap |= cf->cf_flags & 303 (WDC_CAPABILITY_PREATA|WDC_CAPABILITY_NO_EXTRA_RESETS); 304 } 305 sc->sc_wdcdev.datain_pio = wdc_extio_datain; 306 sc->sc_wdcdev.dataout_pio = wdc_extio_dataout; 307 sc->sc_wdcdev.sc_atac.atac_pio_cap = 0; 308 sc->sc_chanlist[0] = chp; 309 sc->sc_wdcdev.sc_atac.atac_channels = sc->sc_chanlist; 310 sc->sc_wdcdev.sc_atac.atac_nchannels = 1; 311 chp->ch_channel = 0; 312 chp->ch_atac = &sc->sc_wdcdev.sc_atac; 313 chp->ch_queue = &sc->sc_chqueue; 314 chp->ch_ndrive = 2; 315 316 printf("\n"); 317 318 wdcattach(chp); 319 } 320
Indexes created Tue Sep 23 07:09:52 GMT 2025