| 1 | /* $NetBSD: esp_pcmcia.c,v 1.39 2016/07/07 06:55:42 msaitoh Exp $ */ |
| 2 | |
| 3 | /*- |
| 4 | * Copyright (c) 2000, 2004 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. |
| 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 | * |
| 19 | * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS |
| 20 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED |
| 21 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| 22 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS |
| 23 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 24 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 25 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| 26 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| 27 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 28 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 29 | * POSSIBILITY OF SUCH DAMAGE. |
| 30 | */ |
| 31 | |
| 32 | #include <sys/cdefs.h> |
| 33 | __KERNEL_RCSID(0, "$NetBSD: esp_pcmcia.c,v 1.39 2016/07/07 06:55:42 msaitoh Exp $" ); |
| 34 | |
| 35 | #include <sys/param.h> |
| 36 | #include <sys/systm.h> |
| 37 | #include <sys/device.h> |
| 38 | #include <sys/buf.h> |
| 39 | |
| 40 | #include <sys/bus.h> |
| 41 | #include <sys/intr.h> |
| 42 | |
| 43 | #include <dev/scsipi/scsi_all.h> |
| 44 | #include <dev/scsipi/scsipi_all.h> |
| 45 | #include <dev/scsipi/scsiconf.h> |
| 46 | |
| 47 | #include <dev/pcmcia/pcmciareg.h> |
| 48 | #include <dev/pcmcia/pcmciavar.h> |
| 49 | #include <dev/pcmcia/pcmciadevs.h> |
| 50 | |
| 51 | #include <dev/ic/ncr53c9xreg.h> |
| 52 | #include <dev/ic/ncr53c9xvar.h> |
| 53 | |
| 54 | struct esp_pcmcia_softc { |
| 55 | struct ncr53c9x_softc sc_ncr53c9x; /* glue to MI code */ |
| 56 | |
| 57 | int sc_active; /* Pseudo-DMA state vars */ |
| 58 | int sc_tc; |
| 59 | int sc_datain; |
| 60 | size_t sc_dmasize; |
| 61 | size_t sc_dmatrans; |
| 62 | uint8_t **sc_dmaaddr; |
| 63 | size_t *sc_pdmalen; |
| 64 | |
| 65 | /* PCMCIA-specific goo. */ |
| 66 | struct pcmcia_function *sc_pf; /* our PCMCIA function */ |
| 67 | void *sc_ih; /* interrupt handler */ |
| 68 | #ifdef ESP_PCMCIA_POLL |
| 69 | struct callout sc_poll_ch; |
| 70 | #endif |
| 71 | bus_space_tag_t sc_iot; |
| 72 | bus_space_handle_t sc_ioh; |
| 73 | |
| 74 | int sc_state; |
| 75 | #define ESP_PCMCIA_ATTACHED 3 |
| 76 | }; |
| 77 | |
| 78 | int esp_pcmcia_match(device_t, cfdata_t, void *); |
| 79 | int esp_pcmcia_validate_config(struct pcmcia_config_entry *); |
| 80 | void esp_pcmcia_attach(device_t, device_t, void *); |
| 81 | void esp_pcmcia_init(struct esp_pcmcia_softc *); |
| 82 | int esp_pcmcia_detach(device_t, int); |
| 83 | int esp_pcmcia_enable(device_t, int); |
| 84 | |
| 85 | CFATTACH_DECL_NEW(esp_pcmcia, sizeof(struct esp_pcmcia_softc), |
| 86 | esp_pcmcia_match, esp_pcmcia_attach, esp_pcmcia_detach, NULL); |
| 87 | |
| 88 | /* |
| 89 | * Functions and the switch for the MI code. |
| 90 | */ |
| 91 | #ifdef ESP_PCMCIA_POLL |
| 92 | void esp_pcmcia_poll(void *); |
| 93 | #endif |
| 94 | uint8_t esp_pcmcia_read_reg(struct ncr53c9x_softc *, int); |
| 95 | void esp_pcmcia_write_reg(struct ncr53c9x_softc *, int, uint8_t); |
| 96 | int esp_pcmcia_dma_isintr(struct ncr53c9x_softc *); |
| 97 | void esp_pcmcia_dma_reset(struct ncr53c9x_softc *); |
| 98 | int esp_pcmcia_dma_intr(struct ncr53c9x_softc *); |
| 99 | int esp_pcmcia_dma_setup(struct ncr53c9x_softc *, uint8_t **, |
| 100 | size_t *, int, size_t *); |
| 101 | void esp_pcmcia_dma_go(struct ncr53c9x_softc *); |
| 102 | void esp_pcmcia_dma_stop(struct ncr53c9x_softc *); |
| 103 | int esp_pcmcia_dma_isactive(struct ncr53c9x_softc *); |
| 104 | |
| 105 | const struct ncr53c9x_glue esp_pcmcia_glue = { |
| 106 | esp_pcmcia_read_reg, |
| 107 | esp_pcmcia_write_reg, |
| 108 | esp_pcmcia_dma_isintr, |
| 109 | esp_pcmcia_dma_reset, |
| 110 | esp_pcmcia_dma_intr, |
| 111 | esp_pcmcia_dma_setup, |
| 112 | esp_pcmcia_dma_go, |
| 113 | esp_pcmcia_dma_stop, |
| 114 | esp_pcmcia_dma_isactive, |
| 115 | NULL, /* gl_clear_latched_intr */ |
| 116 | }; |
| 117 | |
| 118 | const struct pcmcia_product esp_pcmcia_products[] = { |
| 119 | { PCMCIA_VENDOR_PANASONIC, PCMCIA_PRODUCT_PANASONIC_KXLC002, |
| 120 | PCMCIA_CIS_PANASONIC_KXLC002 }, |
| 121 | |
| 122 | { PCMCIA_VENDOR_RATOC, PCMCIA_PRODUCT_RATOC_REX_9530, |
| 123 | PCMCIA_CIS_RATOC_REX_9530 }, |
| 124 | }; |
| 125 | const size_t esp_pcmcia_nproducts = __arraycount(esp_pcmcia_products); |
| 126 | |
| 127 | int |
| 128 | esp_pcmcia_match(device_t parent, cfdata_t cf, void *aux) |
| 129 | { |
| 130 | struct pcmcia_attach_args *pa = aux; |
| 131 | |
| 132 | if (pcmcia_product_lookup(pa, esp_pcmcia_products, esp_pcmcia_nproducts, |
| 133 | sizeof(esp_pcmcia_products[0]), NULL)) |
| 134 | return 1; |
| 135 | return 0; |
| 136 | } |
| 137 | |
| 138 | int |
| 139 | esp_pcmcia_validate_config(struct pcmcia_config_entry *cfe) |
| 140 | { |
| 141 | |
| 142 | if (cfe->iftype != PCMCIA_IFTYPE_IO || |
| 143 | cfe->num_memspace != 0 || |
| 144 | cfe->num_iospace != 1) |
| 145 | return EINVAL; |
| 146 | return 0; |
| 147 | } |
| 148 | |
| 149 | void |
| 150 | esp_pcmcia_attach(device_t parent, device_t self, void *aux) |
| 151 | { |
| 152 | struct esp_pcmcia_softc *esc = device_private(self); |
| 153 | struct ncr53c9x_softc *sc = &esc->sc_ncr53c9x; |
| 154 | struct pcmcia_attach_args *pa = aux; |
| 155 | struct pcmcia_config_entry *cfe; |
| 156 | struct pcmcia_function *pf = pa->pf; |
| 157 | int error; |
| 158 | |
| 159 | sc->sc_dev = self; |
| 160 | |
| 161 | esc->sc_pf = pf; |
| 162 | |
| 163 | error = pcmcia_function_configure(pf, esp_pcmcia_validate_config); |
| 164 | if (error) { |
| 165 | aprint_error_dev(self, "configure failed, error=%d\n" , error); |
| 166 | return; |
| 167 | } |
| 168 | |
| 169 | cfe = pf->cfe; |
| 170 | esc->sc_iot = cfe->iospace[0].handle.iot; |
| 171 | esc->sc_ioh = cfe->iospace[0].handle.ioh; |
| 172 | esp_pcmcia_init(esc); |
| 173 | |
| 174 | aprint_normal("%s" , device_xname(self)); |
| 175 | |
| 176 | sc->sc_adapter.adapt_minphys = minphys; |
| 177 | sc->sc_adapter.adapt_request = ncr53c9x_scsipi_request; |
| 178 | sc->sc_adapter.adapt_enable = esp_pcmcia_enable; |
| 179 | |
| 180 | ncr53c9x_attach(sc); |
| 181 | esc->sc_state = ESP_PCMCIA_ATTACHED; |
| 182 | } |
| 183 | |
| 184 | void |
| 185 | esp_pcmcia_init(struct esp_pcmcia_softc *esc) |
| 186 | { |
| 187 | struct ncr53c9x_softc *sc = &esc->sc_ncr53c9x; |
| 188 | |
| 189 | /* id 7, clock 40M, parity ON, sync OFF, fast ON, slow ON */ |
| 190 | |
| 191 | sc->sc_glue = &esp_pcmcia_glue; |
| 192 | |
| 193 | #ifdef ESP_PCMCIA_POLL |
| 194 | callout_init(&esc->sc_poll_ch, 0); |
| 195 | #endif |
| 196 | |
| 197 | sc->sc_rev = NCR_VARIANT_ESP406; |
| 198 | sc->sc_id = 7; |
| 199 | sc->sc_freq = 40; |
| 200 | /* try -PARENB -SLOW */ |
| 201 | sc->sc_cfg1 = sc->sc_id | NCRCFG1_PARENB | NCRCFG1_SLOW; |
| 202 | /* try +FE */ |
| 203 | sc->sc_cfg2 = NCRCFG2_SCSI2; |
| 204 | /* try -IDM -FSCSI -FCLK */ |
| 205 | sc->sc_cfg3 = NCRESPCFG3_CDB | NCRESPCFG3_FCLK | NCRESPCFG3_IDM | |
| 206 | NCRESPCFG3_FSCSI; |
| 207 | sc->sc_cfg4 = NCRCFG4_ACTNEG; |
| 208 | /* try +INTP */ |
| 209 | sc->sc_cfg5 = NCRCFG5_CRS1 | NCRCFG5_AADDR | NCRCFG5_PTRINC; |
| 210 | sc->sc_minsync = 0; |
| 211 | sc->sc_maxxfer = 64 * 1024; |
| 212 | } |
| 213 | |
| 214 | int |
| 215 | esp_pcmcia_detach(device_t self, int flags) |
| 216 | { |
| 217 | struct esp_pcmcia_softc *sc = device_private(self); |
| 218 | int error; |
| 219 | |
| 220 | if (sc->sc_state != ESP_PCMCIA_ATTACHED) |
| 221 | return 0; |
| 222 | |
| 223 | error = ncr53c9x_detach(&sc->sc_ncr53c9x, flags); |
| 224 | if (error) |
| 225 | return error; |
| 226 | |
| 227 | pcmcia_function_unconfigure(sc->sc_pf); |
| 228 | |
| 229 | return 0; |
| 230 | } |
| 231 | |
| 232 | int |
| 233 | esp_pcmcia_enable(device_t self, int onoff) |
| 234 | { |
| 235 | struct esp_pcmcia_softc *sc = device_private(self); |
| 236 | int error; |
| 237 | |
| 238 | if (onoff) { |
| 239 | #ifdef ESP_PCMCIA_POLL |
| 240 | callout_reset(&sc->sc_poll_ch, 1, esp_pcmcia_poll, sc); |
| 241 | #else |
| 242 | /* Establish the interrupt handler. */ |
| 243 | sc->sc_ih = pcmcia_intr_establish(sc->sc_pf, IPL_BIO, |
| 244 | ncr53c9x_intr, &sc->sc_ncr53c9x); |
| 245 | if (!sc->sc_ih) |
| 246 | return EIO; |
| 247 | #endif |
| 248 | |
| 249 | error = pcmcia_function_enable(sc->sc_pf); |
| 250 | if (error) { |
| 251 | pcmcia_intr_disestablish(sc->sc_pf, sc->sc_ih); |
| 252 | sc->sc_ih = 0; |
| 253 | return error; |
| 254 | } |
| 255 | |
| 256 | /* Initialize only chip. */ |
| 257 | ncr53c9x_init(&sc->sc_ncr53c9x, 0); |
| 258 | } else { |
| 259 | pcmcia_function_disable(sc->sc_pf); |
| 260 | #ifdef ESP_PCMCIA_POLL |
| 261 | callout_stop(&sc->sc_poll_ch); |
| 262 | #else |
| 263 | pcmcia_intr_disestablish(sc->sc_pf, sc->sc_ih); |
| 264 | sc->sc_ih = 0; |
| 265 | #endif |
| 266 | } |
| 267 | |
| 268 | return 0; |
| 269 | } |
| 270 | |
| 271 | #ifdef ESP_PCMCIA_POLL |
| 272 | void |
| 273 | esp_pcmcia_poll(void *arg) |
| 274 | { |
| 275 | struct esp_pcmcia_softc *esc = arg; |
| 276 | |
| 277 | (void)ncr53c9x_intr(&esc->sc_ncr53c9x); |
| 278 | callout_reset(&esc->sc_poll_ch, 1, esp_pcmcia_poll, esc); |
| 279 | } |
| 280 | #endif |
| 281 | |
| 282 | /* |
| 283 | * Glue functions. |
| 284 | */ |
| 285 | uint8_t |
| 286 | esp_pcmcia_read_reg(struct ncr53c9x_softc *sc, int reg) |
| 287 | { |
| 288 | struct esp_pcmcia_softc *esc = (struct esp_pcmcia_softc *)sc; |
| 289 | |
| 290 | return bus_space_read_1(esc->sc_iot, esc->sc_ioh, reg); |
| 291 | } |
| 292 | |
| 293 | void |
| 294 | esp_pcmcia_write_reg(struct ncr53c9x_softc *sc, int reg, uint8_t val) |
| 295 | { |
| 296 | struct esp_pcmcia_softc *esc = (struct esp_pcmcia_softc *)sc; |
| 297 | uint8_t v = val; |
| 298 | |
| 299 | if (reg == NCR_CMD && v == (NCRCMD_TRANS|NCRCMD_DMA)) |
| 300 | v = NCRCMD_TRANS; |
| 301 | bus_space_write_1(esc->sc_iot, esc->sc_ioh, reg, v); |
| 302 | } |
| 303 | |
| 304 | int |
| 305 | esp_pcmcia_dma_isintr(struct ncr53c9x_softc *sc) |
| 306 | { |
| 307 | |
| 308 | return NCR_READ_REG(sc, NCR_STAT) & NCRSTAT_INT; |
| 309 | } |
| 310 | |
| 311 | void |
| 312 | esp_pcmcia_dma_reset(struct ncr53c9x_softc *sc) |
| 313 | { |
| 314 | struct esp_pcmcia_softc *esc = (struct esp_pcmcia_softc *)sc; |
| 315 | |
| 316 | esc->sc_active = 0; |
| 317 | esc->sc_tc = 0; |
| 318 | } |
| 319 | |
| 320 | int |
| 321 | esp_pcmcia_dma_intr(struct ncr53c9x_softc *sc) |
| 322 | { |
| 323 | struct esp_pcmcia_softc *esc = (struct esp_pcmcia_softc *)sc; |
| 324 | uint8_t *p; |
| 325 | u_int espphase, espstat, espintr; |
| 326 | int cnt; |
| 327 | |
| 328 | if (esc->sc_active == 0) { |
| 329 | printf("%s: dma_intr--inactive DMA\n" , |
| 330 | device_xname(sc->sc_dev)); |
| 331 | return -1; |
| 332 | } |
| 333 | |
| 334 | if ((sc->sc_espintr & NCRINTR_BS) == 0) { |
| 335 | esc->sc_active = 0; |
| 336 | return 0; |
| 337 | } |
| 338 | |
| 339 | cnt = *esc->sc_pdmalen; |
| 340 | if (*esc->sc_pdmalen == 0) { |
| 341 | printf("%s: data interrupt, but no count left\n" , |
| 342 | device_xname(sc->sc_dev)); |
| 343 | } |
| 344 | |
| 345 | p = *esc->sc_dmaaddr; |
| 346 | espphase = sc->sc_phase; |
| 347 | espstat = (u_int)sc->sc_espstat; |
| 348 | espintr = (u_int)sc->sc_espintr; |
| 349 | do { |
| 350 | if (esc->sc_datain) { |
| 351 | *p++ = NCR_READ_REG(sc, NCR_FIFO); |
| 352 | cnt--; |
| 353 | if (espphase == DATA_IN_PHASE) |
| 354 | NCR_WRITE_REG(sc, NCR_CMD, NCRCMD_TRANS); |
| 355 | else |
| 356 | esc->sc_active = 0; |
| 357 | } else { |
| 358 | if (espphase == DATA_OUT_PHASE || |
| 359 | espphase == MESSAGE_OUT_PHASE) { |
| 360 | NCR_WRITE_REG(sc, NCR_FIFO, *p++); |
| 361 | cnt--; |
| 362 | NCR_WRITE_REG(sc, NCR_CMD, NCRCMD_TRANS); |
| 363 | } else |
| 364 | esc->sc_active = 0; |
| 365 | } |
| 366 | |
| 367 | if (esc->sc_active) { |
| 368 | while ((NCR_READ_REG(sc, NCR_STAT) & NCRSTAT_INT) == 0) |
| 369 | ; |
| 370 | espstat = NCR_READ_REG(sc, NCR_STAT); |
| 371 | espintr = NCR_READ_REG(sc, NCR_INTR); |
| 372 | espphase = (espintr & NCRINTR_DIS) |
| 373 | ? /* Disconnected */ BUSFREE_PHASE |
| 374 | : espstat & PHASE_MASK; |
| 375 | } |
| 376 | } while (esc->sc_active && espintr); |
| 377 | sc->sc_phase = espphase; |
| 378 | sc->sc_espstat = (uint8_t)espstat; |
| 379 | sc->sc_espintr = (uint8_t)espintr; |
| 380 | *esc->sc_dmaaddr = p; |
| 381 | *esc->sc_pdmalen = cnt; |
| 382 | |
| 383 | if (*esc->sc_pdmalen == 0) |
| 384 | esc->sc_tc = NCRSTAT_TC; |
| 385 | sc->sc_espstat |= esc->sc_tc; |
| 386 | return 0; |
| 387 | } |
| 388 | |
| 389 | int |
| 390 | esp_pcmcia_dma_setup(struct ncr53c9x_softc *sc, uint8_t **addr, size_t *len, |
| 391 | int datain, size_t *dmasize) |
| 392 | { |
| 393 | struct esp_pcmcia_softc *esc = (struct esp_pcmcia_softc *)sc; |
| 394 | |
| 395 | esc->sc_dmaaddr = addr; |
| 396 | esc->sc_pdmalen = len; |
| 397 | esc->sc_datain = datain; |
| 398 | esc->sc_dmasize = *dmasize; |
| 399 | esc->sc_tc = 0; |
| 400 | |
| 401 | return 0; |
| 402 | } |
| 403 | |
| 404 | void |
| 405 | esp_pcmcia_dma_go(struct ncr53c9x_softc *sc) |
| 406 | { |
| 407 | struct esp_pcmcia_softc *esc = (struct esp_pcmcia_softc *)sc; |
| 408 | |
| 409 | esc->sc_active = 1; |
| 410 | } |
| 411 | |
| 412 | void |
| 413 | esp_pcmcia_dma_stop(struct ncr53c9x_softc *sc) |
| 414 | { |
| 415 | } |
| 416 | |
| 417 | int |
| 418 | esp_pcmcia_dma_isactive(struct ncr53c9x_softc *sc) |
| 419 | { |
| 420 | struct esp_pcmcia_softc *esc = (struct esp_pcmcia_softc *)sc; |
| 421 | |
| 422 | return esc->sc_active; |
| 423 | } |
| 424 | |