wdc_extio.c revision 1.10
1/* $NetBSD: wdc_extio.c,v 1.10 2017/10/20 07:06:07 jdolecek 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 1.10 2017/10/20 07:06:07 jdolecek Exp $"); 65 66#include <sys/param.h> 67#include <sys/bus.h> 68#include <sys/callout.h> 69#include <sys/cpu.h> 70#include <sys/device.h> 71#include <sys/intr.h> 72#include <sys/kernel.h> 73#include <sys/malloc.h> 74#include <sys/systm.h> 75 76#include <mips/adm5120/include/adm5120_extiovar.h> 77 78#include <dev/ata/atareg.h> 79#include <dev/ata/atavar.h> 80#include <dev/ic/wdcvar.h> 81 82#ifdef WDC_EXTIO_DEBUG 83int wdc_extio_debug = 1; 84#define WDC_EXTIO_DPRINTF(__fmt, ...) \ 85do { \ 86 if (wdc_extio_debug) \ 87 printf((__fmt), __VA_ARGS__); \ 88} while (/*CONSTCOND*/0) 89#else /* !WDC_EXTIO_DEBUG */ 90#define WDC_EXTIO_DPRINTF(__fmt, ...) do { } while (/*CONSTCOND*/0) 91#endif /* WDC_EXTIO_DEBUG */ 92 93#define WDC_OBIO_CF_WINSIZE 0x1000 94#define WDC_OBIO_REG_OFFSET 0x0800 95#define WDC_OBIO_DATA_OFFSET 0x0808 96#define WDC_OBIO_AUXREG_OFFSET 0x080e 97 98struct wdc_extio_softc { 99 struct wdc_softc sc_wdcdev; 100 struct ata_channel *sc_chanlist[1]; 101 struct ata_channel sc_channel; 102 struct wdc_regs sc_wdc_regs; 103 void *sc_gpio; 104 int sc_map; 105 struct gpio_pinmap sc_pinmap; 106}; 107 108int wdc_extio_match(device_t, cfdata_t, void *); 109void wdc_extio_attach(device_t, device_t, void *); 110 111CFATTACH_DECL_NEW(wdc_extio, sizeof(struct wdc_extio_softc), 112 wdc_extio_match, wdc_extio_attach, NULL, NULL); 113 114#if 0 115void wdc_extio_reset(struct ata_channel *, int); 116void 117wdc_extio_reset(struct ata_channel *chp, int poll) 118{ 119 struct wdc_softc *wdc = CHAN_TO_WDC(chp); 120 struct wdc_regs *wdr = &wdc->regs[chp->ch_channel]; 121 uint8_t st0; 122 int i, s = 0; 123 124 if (poll) 125 s = splbio(); 126 if (wdc->select) 127 wdc->select(chp,0); 128 /* assert SRST, wait for reset to complete */ 129 bus_space_write_1(wdr->ctl_iot, wdr->ctl_ioh, wd_aux_ctlr, WDCTL_RST); 130 delay(2000); 131 (void) bus_space_read_1(wdr->cmd_iot, wdr->cmd_iohs[wd_error], 0); 132 bus_space_write_1(wdr->ctl_iot, wdr->ctl_ioh, wd_aux_ctlr, 0); 133 delay(10); /* 400ns delay */ 134 for (i = 3100000; --i > 0; ) { 135 st0 = bus_space_read_1(wdr->cmd_iot, 136 wdr->cmd_iohs[wd_status], 0); 137 if ((st0 & WDCS_BSY) == 0) 138 break; 139 delay(10); 140 } 141 if (i == 0) 142 printf("%s: reset failed\n", __func__); 143 else 144 WDC_EXTIO_DPRINTF("%s: reset in %d.%02dms\n", __func__, 145 (3100000 - i) / 100, 146 (3100000 - i) % 100); 147 148 if (poll) { 149 /* ACK interrupt in case there is one pending left */ 150 if (wdc->irqack) 151 wdc->irqack(chp); 152 splx(s); 153 } 154} 155#endif 156 157static int 158wdc_extio_map(struct extio_attach_args *ea, struct wdc_regs *wdr, 159 struct ata_channel *chp, void **gpio, struct gpio_pinmap *pinmap) 160{ 161 int i; 162 163 *gpio = ea->ea_gpio; 164 wdr->cmd_iot = wdr->ctl_iot = ea->ea_st; 165 166#if 0 167 if (gpio_pin_map(ea->ea_gpio, 0, ea->ea_gpio_mask, pinmap) != 0) { 168 printf("%s: couldn't map GPIO\n", __func__); 169 return -1; 170 } 171#endif 172 173 if (bus_space_map(wdr->cmd_iot, ea->ea_addr, WDC_OBIO_CF_WINSIZE, 0, 174 &wdr->cmd_baseioh)) { 175 aprint_error("%s: couldn't map registers\n", __func__); 176 goto post_gpio_err; 177 } 178 179 for (i = 1; i < WDC_NREG; i++) { 180 if (bus_space_subregion(wdr->cmd_iot, wdr->cmd_baseioh, 181 WDC_OBIO_REG_OFFSET + i, 1, 182 &wdr->cmd_iohs[i]) != 0) { 183 aprint_error( 184 "%s: unable to subregion control register\n", 185 __func__); 186 goto post_bus_err; 187 } 188 } 189 if (bus_space_subregion(wdr->cmd_iot, wdr->cmd_baseioh, 190 WDC_OBIO_DATA_OFFSET, 2, 191 &wdr->cmd_iohs[wd_data]) != 0) { 192 aprint_error("%s: unable to subregion data register\n", 193 __func__); 194 goto post_bus_err; 195 } 196 if (bus_space_subregion(wdr->cmd_iot, wdr->cmd_baseioh, 197 WDC_OBIO_AUXREG_OFFSET, 1, &wdr->ctl_ioh)) { 198 aprint_error("%s: unable to subregion aux register\n", 199 __func__); 200 goto post_bus_err; 201 } 202 203 wdc_init_shadow_regs(chp); 204 205 return 0; 206post_bus_err: 207 bus_space_unmap(wdr->cmd_iot, wdr->cmd_baseioh, WDC_OBIO_CF_WINSIZE); 208post_gpio_err: 209#if 0 210 gpio_pin_unmap(ea->ea_gpio, pinmap); 211#endif 212 return -1; 213} 214 215static void 216wdc_extio_dataout(struct ata_channel *chp, int flags, void *bf, size_t len) 217{ 218 struct wdc_regs *wdr = CHAN_TO_WDC_REGS(chp); 219 220 bus_space_write_multi_1( 221 wdr->cmd_iot, wdr->cmd_iohs[wd_data], 0, bf, len); 222} 223 224static void 225wdc_extio_datain(struct ata_channel *chp, int flags, void *bf, size_t len) 226{ 227 struct wdc_regs *wdr = CHAN_TO_WDC_REGS(chp); 228 229 bus_space_read_multi_1( 230 wdr->cmd_iot, wdr->cmd_iohs[wd_data], 0, bf, len); 231} 232 233int 234wdc_extio_match(device_t parent, cfdata_t cf, void *aux) 235{ 236 struct extio_attach_args *ea = (struct extio_attach_args *)aux; 237 struct ata_channel ch; 238 struct wdc_softc wdc; 239 struct wdc_regs wdr; 240 int result = 0; 241 void *gpio; 242 int map; 243 struct gpio_pinmap pm = {.pm_map = &map}; 244 245 if (strcmp(ea->ea_name, cf->cf_name) != 0) 246 return 0; 247 248 WDC_EXTIO_DPRINTF("%s: enter\n", __func__); 249 250 memset(&wdc, 0, sizeof(wdc)); 251 memset(&ch, 0, sizeof(ch)); 252 ch.ch_atac = &wdc.sc_atac; 253 wdc.regs = &wdr; 254 wdc.datain_pio = wdc_extio_datain; 255 wdc.dataout_pio = wdc_extio_dataout; 256 if (cf->cf_flags != -1) { 257 wdc.sc_atac.atac_cap |= cf->cf_flags & 258 (ATAC_CAP_NOIRQ|ATAC_CAP_DATA32|ATAC_CAP_DATA16); 259 wdc.cap |= cf->cf_flags & 260 (WDC_CAPABILITY_PREATA|WDC_CAPABILITY_NO_EXTRA_RESETS); 261 } 262 263 if (wdc_extio_map(ea, &wdr, &ch, &gpio, &pm) == -1) 264 return 0; 265 266 result = wdcprobe(&ch); 267 268 bus_space_unmap(wdr.cmd_iot, wdr.cmd_baseioh, WDC_OBIO_CF_WINSIZE); 269#if 0 270 gpio_pin_unmap(ea->ea_gpio, &pm); 271#endif 272 273 return result; 274} 275 276void 277wdc_extio_attach(device_t parent, device_t self, void *aux) 278{ 279 struct wdc_extio_softc *sc = device_private(self); 280 struct wdc_regs *wdr; 281 struct extio_attach_args *ea = aux; 282 struct ata_channel *chp = &sc->sc_channel; 283 struct cfdata *cf; 284 285 WDC_EXTIO_DPRINTF("%s: enter\n", __func__); 286 287 sc->sc_wdcdev.sc_atac.atac_dev = self; 288 sc->sc_pinmap.pm_map = &sc->sc_map; 289 sc->sc_wdcdev.regs = wdr = &sc->sc_wdc_regs; 290 chp->ch_atac = &sc->sc_wdcdev.sc_atac; 291 292 if (wdc_extio_map(ea, wdr, chp, &sc->sc_gpio, &sc->sc_pinmap) == -1) 293 return; 294 295 cf = device_cfdata(sc->sc_wdcdev.sc_atac.atac_dev); 296 if (cf->cf_flags != -1) { 297 aprint_normal(" flags %04x", cf->cf_flags); 298 sc->sc_wdcdev.sc_atac.atac_cap |= cf->cf_flags & 299 (ATAC_CAP_NOIRQ|ATAC_CAP_DATA32|ATAC_CAP_DATA16); 300 sc->sc_wdcdev.cap |= cf->cf_flags & 301 (WDC_CAPABILITY_PREATA|WDC_CAPABILITY_NO_EXTRA_RESETS); 302 } 303 sc->sc_wdcdev.datain_pio = wdc_extio_datain; 304 sc->sc_wdcdev.dataout_pio = wdc_extio_dataout; 305 sc->sc_wdcdev.sc_atac.atac_pio_cap = 0; 306 sc->sc_chanlist[0] = chp; 307 sc->sc_wdcdev.sc_atac.atac_channels = sc->sc_chanlist; 308 sc->sc_wdcdev.sc_atac.atac_nchannels = 1; 309 sc->sc_wdcdev.wdc_maxdrives = 2; 310 311 chp->ch_channel = 0; 312 chp->ch_atac = &sc->sc_wdcdev.sc_atac; 313 314 aprint_normal("\n"); 315 316 wdcattach(chp); 317} 318