esp_pcmcia.c revision 1.29
1 /* $NetBSD: esp_pcmcia.c,v 1.29 2006/11/16 01:33:20 christos 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 * 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: esp_pcmcia.c,v 1.29 2006/11/16 01:33:20 christos Exp $"); 41 42 #include <sys/param.h> 43 #include <sys/systm.h> 44 #include <sys/device.h> 45 #include <sys/buf.h> 46 47 #include <machine/bus.h> 48 #include <machine/intr.h> 49 50 #include <dev/scsipi/scsi_all.h> 51 #include <dev/scsipi/scsipi_all.h> 52 #include <dev/scsipi/scsiconf.h> 53 54 #include <dev/pcmcia/pcmciareg.h> 55 #include <dev/pcmcia/pcmciavar.h> 56 #include <dev/pcmcia/pcmciadevs.h> 57 58 #include <dev/ic/ncr53c9xreg.h> 59 #include <dev/ic/ncr53c9xvar.h> 60 61 struct esp_pcmcia_softc { 62 struct ncr53c9x_softc sc_ncr53c9x; /* glue to MI code */ 63 64 int sc_active; /* Pseudo-DMA state vars */ 65 int sc_tc; 66 int sc_datain; 67 size_t sc_dmasize; 68 size_t sc_dmatrans; 69 char **sc_dmaaddr; 70 size_t *sc_pdmalen; 71 72 /* PCMCIA-specific goo. */ 73 struct pcmcia_function *sc_pf; /* our PCMCIA function */ 74 void *sc_ih; /* interrupt handler */ 75 #ifdef ESP_PCMCIA_POLL 76 struct callout sc_poll_ch; 77 #endif 78 bus_space_tag_t sc_iot; 79 bus_space_handle_t sc_ioh; 80 81 int sc_state; 82 #define ESP_PCMCIA_ATTACHED 3 83 }; 84 85 int esp_pcmcia_match(struct device *, struct cfdata *, void *); 86 int esp_pcmcia_validate_config(struct pcmcia_config_entry *); 87 void esp_pcmcia_attach(struct device *, struct device *, void *); 88 void esp_pcmcia_init(struct esp_pcmcia_softc *); 89 int esp_pcmcia_detach(struct device *, int); 90 int esp_pcmcia_enable(struct device *, int); 91 92 CFATTACH_DECL(esp_pcmcia, sizeof(struct esp_pcmcia_softc), 93 esp_pcmcia_match, esp_pcmcia_attach, esp_pcmcia_detach, NULL); 94 95 /* 96 * Functions and the switch for the MI code. 97 */ 98 #ifdef ESP_PCMCIA_POLL 99 void esp_pcmcia_poll(void *); 100 #endif 101 u_char esp_pcmcia_read_reg(struct ncr53c9x_softc *, int); 102 void esp_pcmcia_write_reg(struct ncr53c9x_softc *, int, u_char); 103 int esp_pcmcia_dma_isintr(struct ncr53c9x_softc *); 104 void esp_pcmcia_dma_reset(struct ncr53c9x_softc *); 105 int esp_pcmcia_dma_intr(struct ncr53c9x_softc *); 106 int esp_pcmcia_dma_setup(struct ncr53c9x_softc *, caddr_t *, 107 size_t *, int, size_t *); 108 void esp_pcmcia_dma_go(struct ncr53c9x_softc *); 109 void esp_pcmcia_dma_stop(struct ncr53c9x_softc *); 110 int esp_pcmcia_dma_isactive(struct ncr53c9x_softc *); 111 112 const struct ncr53c9x_glue esp_pcmcia_glue = { 113 esp_pcmcia_read_reg, 114 esp_pcmcia_write_reg, 115 esp_pcmcia_dma_isintr, 116 esp_pcmcia_dma_reset, 117 esp_pcmcia_dma_intr, 118 esp_pcmcia_dma_setup, 119 esp_pcmcia_dma_go, 120 esp_pcmcia_dma_stop, 121 esp_pcmcia_dma_isactive, 122 NULL, /* gl_clear_latched_intr */ 123 }; 124 125 const struct pcmcia_product esp_pcmcia_products[] = { 126 { PCMCIA_VENDOR_PANASONIC, PCMCIA_PRODUCT_PANASONIC_KXLC002, 127 PCMCIA_CIS_PANASONIC_KXLC002 }, 128 129 { PCMCIA_VENDOR_RATOC, PCMCIA_PRODUCT_RATOC_REX_9530, 130 PCMCIA_CIS_RATOC_REX_9530 }, 131 }; 132 const size_t esp_pcmcia_nproducts = 133 sizeof(esp_pcmcia_products) / sizeof(esp_pcmcia_products[0]); 134 135 int 136 esp_pcmcia_match(struct device *parent, struct cfdata *match, 137 void *aux) 138 { 139 struct pcmcia_attach_args *pa = aux; 140 141 if (pcmcia_product_lookup(pa, esp_pcmcia_products, esp_pcmcia_nproducts, 142 sizeof(esp_pcmcia_products[0]), NULL)) 143 return (1); 144 return (0); 145 } 146 147 int 148 esp_pcmcia_validate_config(cfe) 149 struct pcmcia_config_entry *cfe; 150 { 151 if (cfe->iftype != PCMCIA_IFTYPE_IO || 152 cfe->num_memspace != 0 || 153 cfe->num_iospace != 1) 154 return (EINVAL); 155 return (0); 156 } 157 158 void 159 esp_pcmcia_attach(struct device *parent, struct device *self, 160 void *aux) 161 { 162 struct esp_pcmcia_softc *esc = (void *)self; 163 struct ncr53c9x_softc *sc = &esc->sc_ncr53c9x; 164 struct pcmcia_attach_args *pa = aux; 165 struct pcmcia_config_entry *cfe; 166 struct pcmcia_function *pf = pa->pf; 167 int error; 168 169 esc->sc_pf = pf; 170 171 error = pcmcia_function_configure(pf, esp_pcmcia_validate_config); 172 if (error) { 173 aprint_error("%s: configure failed, error=%d\n", self->dv_xname, 174 error); 175 return; 176 } 177 178 cfe = pf->cfe; 179 esc->sc_iot = cfe->iospace[0].handle.iot; 180 esc->sc_ioh = cfe->iospace[0].handle.ioh; 181 esp_pcmcia_init(esc); 182 183 error = esp_pcmcia_enable(self, 1); 184 if (error) 185 goto fail; 186 187 sc->sc_adapter.adapt_minphys = minphys; 188 sc->sc_adapter.adapt_request = ncr53c9x_scsipi_request; 189 sc->sc_adapter.adapt_enable = esp_pcmcia_enable; 190 sc->sc_adapter.adapt_refcnt = 1; 191 192 ncr53c9x_attach(sc); 193 scsipi_adapter_delref(&sc->sc_adapter); 194 esc->sc_state = ESP_PCMCIA_ATTACHED; 195 return; 196 197 fail: 198 pcmcia_function_unconfigure(pf); 199 } 200 201 void 202 esp_pcmcia_init(esc) 203 struct esp_pcmcia_softc *esc; 204 { 205 struct ncr53c9x_softc *sc = &esc->sc_ncr53c9x; 206 207 /* id 7, clock 40M, parity ON, sync OFF, fast ON, slow ON */ 208 209 sc->sc_glue = &esp_pcmcia_glue; 210 211 #ifdef ESP_PCMCIA_POLL 212 callout_init(&esc->sc_poll_ch); 213 #endif 214 215 sc->sc_rev = NCR_VARIANT_ESP406; 216 sc->sc_id = 7; 217 sc->sc_freq = 40; 218 /* try -PARENB -SLOW */ 219 sc->sc_cfg1 = sc->sc_id | NCRCFG1_PARENB | NCRCFG1_SLOW; 220 /* try +FE */ 221 sc->sc_cfg2 = NCRCFG2_SCSI2; 222 /* try -IDM -FSCSI -FCLK */ 223 sc->sc_cfg3 = NCRESPCFG3_CDB | NCRESPCFG3_FCLK | NCRESPCFG3_IDM | 224 NCRESPCFG3_FSCSI; 225 sc->sc_cfg4 = NCRCFG4_ACTNEG; 226 /* try +INTP */ 227 sc->sc_cfg5 = NCRCFG5_CRS1 | NCRCFG5_AADDR | NCRCFG5_PTRINC; 228 sc->sc_minsync = 0; 229 sc->sc_maxxfer = 64 * 1024; 230 } 231 232 int 233 esp_pcmcia_detach(self, flags) 234 struct device *self; 235 int flags; 236 { 237 struct esp_pcmcia_softc *sc = (void *)self; 238 int error; 239 240 if (sc->sc_state != ESP_PCMCIA_ATTACHED) 241 return (0); 242 243 error = ncr53c9x_detach(&sc->sc_ncr53c9x, flags); 244 if (error) 245 return (error); 246 247 pcmcia_function_unconfigure(sc->sc_pf); 248 249 return (0); 250 } 251 252 int 253 esp_pcmcia_enable(arg, onoff) 254 struct device *arg; 255 int onoff; 256 { 257 struct esp_pcmcia_softc *sc = (void *)arg; 258 int error; 259 260 if (onoff) { 261 #ifdef ESP_PCMCIA_POLL 262 callout_reset(&sc->sc_poll_ch, 1, esp_pcmcia_poll, sc); 263 #else 264 /* Establish the interrupt handler. */ 265 sc->sc_ih = pcmcia_intr_establish(sc->sc_pf, IPL_BIO, 266 ncr53c9x_intr, &sc->sc_ncr53c9x); 267 if (!sc->sc_ih) 268 return (EIO); 269 #endif 270 271 error = pcmcia_function_enable(sc->sc_pf); 272 if (error) { 273 pcmcia_intr_disestablish(sc->sc_pf, sc->sc_ih); 274 sc->sc_ih = 0; 275 return (error); 276 } 277 278 /* Initialize only chip. */ 279 ncr53c9x_init(&sc->sc_ncr53c9x, 0); 280 } else { 281 pcmcia_function_disable(sc->sc_pf); 282 #ifdef ESP_PCMCIA_POLL 283 callout_stop(&sc->sc_poll_ch); 284 #else 285 pcmcia_intr_disestablish(sc->sc_pf, sc->sc_ih); 286 sc->sc_ih = 0; 287 #endif 288 } 289 290 return (0); 291 } 292 293 #ifdef ESP_PCMCIA_POLL 294 void 295 esp_pcmcia_poll(arg) 296 void *arg; 297 { 298 struct esp_pcmcia_softc *esc = arg; 299 300 (void) ncr53c9x_intr(&esc->sc_ncr53c9x); 301 callout_reset(&esc->sc_poll_ch, 1, esp_pcmcia_poll, esc); 302 } 303 #endif 304 305 /* 306 * Glue functions. 307 */ 308 u_char 309 esp_pcmcia_read_reg(sc, reg) 310 struct ncr53c9x_softc *sc; 311 int reg; 312 { 313 struct esp_pcmcia_softc *esc = (struct esp_pcmcia_softc *)sc; 314 u_char v; 315 316 v = bus_space_read_1(esc->sc_iot, esc->sc_ioh, reg); 317 return v; 318 } 319 320 void 321 esp_pcmcia_write_reg(sc, reg, val) 322 struct ncr53c9x_softc *sc; 323 int reg; 324 u_char val; 325 { 326 struct esp_pcmcia_softc *esc = (struct esp_pcmcia_softc *)sc; 327 u_char v = val; 328 329 if (reg == NCR_CMD && v == (NCRCMD_TRANS|NCRCMD_DMA)) 330 v = NCRCMD_TRANS; 331 bus_space_write_1(esc->sc_iot, esc->sc_ioh, reg, v); 332 } 333 334 int 335 esp_pcmcia_dma_isintr(sc) 336 struct ncr53c9x_softc *sc; 337 { 338 339 return NCR_READ_REG(sc, NCR_STAT) & NCRSTAT_INT; 340 } 341 342 void 343 esp_pcmcia_dma_reset(sc) 344 struct ncr53c9x_softc *sc; 345 { 346 struct esp_pcmcia_softc *esc = (struct esp_pcmcia_softc *)sc; 347 348 esc->sc_active = 0; 349 esc->sc_tc = 0; 350 } 351 352 int 353 esp_pcmcia_dma_intr(sc) 354 struct ncr53c9x_softc *sc; 355 { 356 struct esp_pcmcia_softc *esc = (struct esp_pcmcia_softc *)sc; 357 u_char *p; 358 u_int espphase, espstat, espintr; 359 int cnt; 360 361 if (esc->sc_active == 0) { 362 printf("%s: dma_intr--inactive DMA\n", sc->sc_dev.dv_xname); 363 return -1; 364 } 365 366 if ((sc->sc_espintr & NCRINTR_BS) == 0) { 367 esc->sc_active = 0; 368 return 0; 369 } 370 371 cnt = *esc->sc_pdmalen; 372 if (*esc->sc_pdmalen == 0) { 373 printf("%s: data interrupt, but no count left\n", 374 sc->sc_dev.dv_xname); 375 } 376 377 p = *esc->sc_dmaaddr; 378 espphase = sc->sc_phase; 379 espstat = (u_int) sc->sc_espstat; 380 espintr = (u_int) sc->sc_espintr; 381 do { 382 if (esc->sc_datain) { 383 *p++ = NCR_READ_REG(sc, NCR_FIFO); 384 cnt--; 385 if (espphase == DATA_IN_PHASE) 386 NCR_WRITE_REG(sc, NCR_CMD, NCRCMD_TRANS); 387 else 388 esc->sc_active = 0; 389 } else { 390 if (espphase == DATA_OUT_PHASE || 391 espphase == MESSAGE_OUT_PHASE) { 392 NCR_WRITE_REG(sc, NCR_FIFO, *p++); 393 cnt--; 394 NCR_WRITE_REG(sc, NCR_CMD, NCRCMD_TRANS); 395 } else 396 esc->sc_active = 0; 397 } 398 399 if (esc->sc_active) { 400 while (!(NCR_READ_REG(sc, NCR_STAT) & NCRSTAT_INT)); 401 espstat = NCR_READ_REG(sc, NCR_STAT); 402 espintr = NCR_READ_REG(sc, NCR_INTR); 403 espphase = (espintr & NCRINTR_DIS) 404 ? /* Disconnected */ BUSFREE_PHASE 405 : espstat & PHASE_MASK; 406 } 407 } while (esc->sc_active && espintr); 408 sc->sc_phase = espphase; 409 sc->sc_espstat = (u_char) espstat; 410 sc->sc_espintr = (u_char) espintr; 411 *esc->sc_dmaaddr = p; 412 *esc->sc_pdmalen = cnt; 413 414 if (*esc->sc_pdmalen == 0) 415 esc->sc_tc = NCRSTAT_TC; 416 sc->sc_espstat |= esc->sc_tc; 417 return 0; 418 } 419 420 int 421 esp_pcmcia_dma_setup(sc, addr, len, datain, dmasize) 422 struct ncr53c9x_softc *sc; 423 caddr_t *addr; 424 size_t *len; 425 int datain; 426 size_t *dmasize; 427 { 428 struct esp_pcmcia_softc *esc = (struct esp_pcmcia_softc *)sc; 429 430 esc->sc_dmaaddr = addr; 431 esc->sc_pdmalen = len; 432 esc->sc_datain = datain; 433 esc->sc_dmasize = *dmasize; 434 esc->sc_tc = 0; 435 436 return 0; 437 } 438 439 void 440 esp_pcmcia_dma_go(sc) 441 struct ncr53c9x_softc *sc; 442 { 443 struct esp_pcmcia_softc *esc = (struct esp_pcmcia_softc *)sc; 444 445 esc->sc_active = 1; 446 } 447 448 void 449 esp_pcmcia_dma_stop(struct ncr53c9x_softc *sc) 450 { 451 } 452 453 int 454 esp_pcmcia_dma_isactive(sc) 455 struct ncr53c9x_softc *sc; 456 { 457 struct esp_pcmcia_softc *esc = (struct esp_pcmcia_softc *)sc; 458 459 return (esc->sc_active); 460 } 461
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