wdc_extio.c revision 1.2.4.1
1 /* $NetBSD: wdc_extio.c,v 1.2.4.1 2010/03/11 15:02:37 yamt 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 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY 20 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 21 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A 22 * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, 24 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 25 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, 26 * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR 28 * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 29 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY 30 * OF SUCH DAMAGE. 31 */ 32 /* 33 * Copyright (c) 2002 Takeshi Shibagaki All rights reserved. 34 * 35 * mac68k OBIO-IDE attachment created by Takeshi Shibagaki 36 * 37 * Redistribution and use in source and binary forms, with or without 38 * modification, are permitted provided that the following conditions 39 * are met: 40 * 1. Redistributions of source code must retain the above copyright 41 * notice, this list of conditions and the following disclaimer. 42 * 2. Redistributions in binary form must reproduce the above copyright 43 * notice, this list of conditions and the following disclaimer in the 44 * documentation and/or other materials provided with the distribution. 45 * 3. All advertising materials mentioning features or use of this software 46 * must display the following acknowledgement: 47 * This product includes software developed by Charles M. Hannum. 48 * 4. The name of the author may not be used to endorse or promote products 49 * derived from this software without specific prior written permission. 50 * 51 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 52 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 53 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 54 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 55 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 56 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 57 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 58 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 59 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 60 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 61 */ 62 63 #include <sys/cdefs.h> 64 __KERNEL_RCSID(0, "$NetBSD: wdc_extio.c,v 1.2.4.1 2010/03/11 15:02:37 yamt Exp $"); 65 66 #include <sys/types.h> 67 #include <sys/param.h> 68 #include <sys/systm.h> 69 #include <sys/device.h> 70 #include <sys/malloc.h> 71 #include <sys/kernel.h> 72 #include <sys/callout.h> 73 74 #include <machine/bus.h> 75 #include <machine/intr.h> 76 #include <machine/cpu.h> 77 78 #include <mips/adm5120/include/adm5120_extiovar.h> 79 80 #include <dev/ata/atareg.h> 81 #include <dev/ata/atavar.h> 82 #include <dev/ic/wdcvar.h> 83 84 #ifdef WDC_EXTIO_DEBUG 85 int wdc_extio_debug = 1; 86 #define WDC_EXTIO_DPRINTF(__fmt, ...) \ 87 do { \ 88 if (wdc_extio_debug) \ 89 printf((__fmt), __VA_ARGS__); \ 90 } while (/*CONSTCOND*/0) 91 #else /* !WDC_EXTIO_DEBUG */ 92 #define WDC_EXTIO_DPRINTF(__fmt, ...) do { } while (/*CONSTCOND*/0) 93 #endif /* WDC_EXTIO_DEBUG */ 94 95 #define WDC_OBIO_CF_WINSIZE 0x1000 96 #define WDC_OBIO_REG_OFFSET 0x0800 97 #define WDC_OBIO_DATA_OFFSET 0x0808 98 #define WDC_OBIO_AUXREG_OFFSET 0x080e 99 100 struct wdc_extio_softc { 101 struct wdc_softc sc_wdcdev; 102 struct ata_channel *sc_chanlist[1]; 103 struct ata_channel sc_channel; 104 struct ata_queue sc_chqueue; 105 struct wdc_regs sc_wdc_regs; 106 void *sc_gpio; 107 int sc_map; 108 struct gpio_pinmap sc_pinmap; 109 }; 110 111 int wdc_extio_match(device_t, cfdata_t, void *); 112 void wdc_extio_attach(device_t, device_t, void *); 113 114 CFATTACH_DECL_NEW(wdc_extio, sizeof(struct wdc_extio_softc), 115 wdc_extio_match, wdc_extio_attach, NULL, NULL); 116 117 #if 0 118 void wdc_extio_reset(struct ata_channel *, int); 119 void 120 wdc_extio_reset(struct ata_channel *chp, int poll) 121 { 122 struct wdc_softc *wdc = CHAN_TO_WDC(chp); 123 struct wdc_regs *wdr = &wdc->regs[chp->ch_channel]; 124 uint8_t st0; 125 int i, s = 0; 126 127 if (poll) 128 s = splbio(); 129 if (wdc->select) 130 wdc->select(chp,0); 131 /* assert SRST, wait for reset to complete */ 132 bus_space_write_1(wdr->ctl_iot, wdr->ctl_ioh, wd_aux_ctlr, WDCTL_RST); 133 delay(2000); 134 (void) bus_space_read_1(wdr->cmd_iot, wdr->cmd_iohs[wd_error], 0); 135 bus_space_write_1(wdr->ctl_iot, wdr->ctl_ioh, wd_aux_ctlr, 0); 136 delay(10); /* 400ns delay */ 137 for (i = 3100000; --i > 0; ) { 138 st0 = bus_space_read_1(wdr->cmd_iot, 139 wdr->cmd_iohs[wd_status], 0); 140 if ((st0 & WDCS_BSY) == 0) 141 break; 142 delay(10); 143 } 144 if (i == 0) 145 printf("%s: reset failed\n", __func__); 146 else 147 WDC_EXTIO_DPRINTF("%s: reset in %d.%02dms\n", __func__, 148 (3100000 - i) / 100, 149 (3100000 - i) % 100); 150 151 if (poll) { 152 /* ACK interrupt in case there is one pending left */ 153 if (wdc->irqack) 154 wdc->irqack(chp); 155 splx(s); 156 } 157 } 158 #endif 159 160 static int 161 wdc_extio_map(struct extio_attach_args *ea, struct wdc_regs *wdr, 162 struct ata_channel *chp, void **gpio, struct gpio_pinmap *pinmap) 163 { 164 int i; 165 166 *gpio = ea->ea_gpio; 167 wdr->cmd_iot = wdr->ctl_iot = ea->ea_st; 168 169 #if 0 170 if (gpio_pin_map(ea->ea_gpio, 0, ea->ea_gpio_mask, pinmap) != 0) { 171 printf("%s: couldn't map GPIO\n", __func__); 172 return -1; 173 } 174 #endif 175 176 if (bus_space_map(wdr->cmd_iot, ea->ea_addr, WDC_OBIO_CF_WINSIZE, 0, 177 &wdr->cmd_baseioh)) { 178 aprint_error("%s: couldn't map registers\n", __func__); 179 goto post_gpio_err; 180 } 181 182 for (i = 1; i < WDC_NREG; i++) { 183 if (bus_space_subregion(wdr->cmd_iot, wdr->cmd_baseioh, 184 WDC_OBIO_REG_OFFSET + i, 1, 185 &wdr->cmd_iohs[i]) != 0) { 186 aprint_error( 187 "%s: unable to subregion control register\n", 188 __func__); 189 goto post_bus_err; 190 } 191 } 192 if (bus_space_subregion(wdr->cmd_iot, wdr->cmd_baseioh, 193 WDC_OBIO_DATA_OFFSET, 2, 194 &wdr->cmd_iohs[wd_data]) != 0) { 195 aprint_error("%s: unable to subregion data register\n", 196 __func__); 197 goto post_bus_err; 198 } 199 if (bus_space_subregion(wdr->cmd_iot, wdr->cmd_baseioh, 200 WDC_OBIO_AUXREG_OFFSET, 1, &wdr->ctl_ioh)) { 201 aprint_error("%s: unable to subregion aux register\n", 202 __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(device_t parent, cfdata_t 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(device_t parent, device_t self, void *aux) 281 { 282 struct wdc_extio_softc *sc = device_private(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_wdcdev.sc_atac.atac_dev = self; 291 sc->sc_pinmap.pm_map = &sc->sc_map; 292 sc->sc_wdcdev.regs = wdr = &sc->sc_wdc_regs; 293 chp->ch_atac = &sc->sc_wdcdev.sc_atac; 294 295 if (wdc_extio_map(ea, wdr, chp, &sc->sc_gpio, &sc->sc_pinmap) == -1) 296 return; 297 298 cf = device_cfdata(sc->sc_wdcdev.sc_atac.atac_dev); 299 if (cf->cf_flags != -1) { 300 aprint_normal(" flags %04x", cf->cf_flags); 301 sc->sc_wdcdev.sc_atac.atac_cap |= cf->cf_flags & 302 (ATAC_CAP_NOIRQ|ATAC_CAP_DATA32|ATAC_CAP_DATA16); 303 sc->sc_wdcdev.cap |= cf->cf_flags & 304 (WDC_CAPABILITY_PREATA|WDC_CAPABILITY_NO_EXTRA_RESETS); 305 } 306 sc->sc_wdcdev.datain_pio = wdc_extio_datain; 307 sc->sc_wdcdev.dataout_pio = wdc_extio_dataout; 308 sc->sc_wdcdev.sc_atac.atac_pio_cap = 0; 309 sc->sc_chanlist[0] = chp; 310 sc->sc_wdcdev.sc_atac.atac_channels = sc->sc_chanlist; 311 sc->sc_wdcdev.sc_atac.atac_nchannels = 1; 312 chp->ch_channel = 0; 313 chp->ch_atac = &sc->sc_wdcdev.sc_atac; 314 chp->ch_queue = &sc->sc_chqueue; 315 chp->ch_ndrive = 2; 316 317 aprint_normal("\n"); 318 319 wdcattach(chp); 320 } 321
Indexes created Thu Oct 02 14:10:14 GMT 2025