1 /* $NetBSD: ptsc.c,v 1.17 2011/06/03 07:35:37 matt Exp $ */ 2 3 /* 4 * Copyright (c) 1982, 1990 The Regents of the University of California. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 * @(#)ptsc.c 32 */ 33 34 /* 35 * Copyright (c) 1995 Scott Stevens 36 * Copyright (c) 1995 Daniel Widenfalk 37 * Copyright (c) 1994 Christian E. Hopps 38 * 39 * Redistribution and use in source and binary forms, with or without 40 * modification, are permitted provided that the following conditions 41 * are met: 42 * 1. Redistributions of source code must retain the above copyright 43 * notice, this list of conditions and the following disclaimer. 44 * 2. Redistributions in binary form must reproduce the above copyright 45 * notice, this list of conditions and the following disclaimer in the 46 * documentation and/or other materials provided with the distribution. 47 * 3. All advertising materials mentioning features or use of this software 48 * must display the following acknowledgement: 49 * This product includes software developed by the University of 50 * California, Berkeley and its contributors. 51 * 4. Neither the name of the University nor the names of its contributors 52 * may be used to endorse or promote products derived from this software 53 * without specific prior written permission. 54 * 55 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 56 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 57 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 58 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 59 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 60 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 61 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 62 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 63 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 64 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 65 * SUCH DAMAGE. 66 * 67 * @(#)ptsc.c 68 */ 69 70 /* 71 * Power-tec SCSI-2 driver uses SFAS216 generic driver 72 * 73 * Thanks to Alsystems for loaning a development card and providing 74 * programming information. 75 */ 76 77 #include <sys/cdefs.h> 78 __KERNEL_RCSID(0, "$NetBSD: ptsc.c,v 1.17 2011/06/03 07:35:37 matt Exp $"); 79 80 #include <sys/param.h> 81 #include <sys/systm.h> 82 #include <sys/kernel.h> 83 #include <sys/device.h> 84 85 #include <uvm/uvm_extern.h> 86 87 #include <dev/scsipi/scsi_all.h> 88 #include <dev/scsipi/scsipi_all.h> 89 #include <dev/scsipi/scsiconf.h> 90 #include <machine/io.h> 91 #include <machine/intr.h> 92 #include <machine/bootconfig.h> 93 #include <acorn32/podulebus/podulebus.h> 94 #include <acorn32/podulebus/sfasreg.h> 95 #include <acorn32/podulebus/sfasvar.h> 96 #include <acorn32/podulebus/ptscreg.h> 97 #include <acorn32/podulebus/ptscvar.h> 98 #include <dev/podulebus/podules.h> 99 #include <dev/podulebus/powerromreg.h> 100 101 int ptscmatch(device_t, cfdata_t, void *); 102 void ptscattach(device_t, device_t, void *); 103 104 CFATTACH_DECL(ptsc, sizeof(struct ptsc_softc), 105 ptscmatch, ptscattach, NULL, NULL); 106 107 int ptsc_intr(void *); 108 int ptsc_setup_dma(void *, void *, int, int); 109 int ptsc_build_dma_chain(void *, void *, void *, int); 110 int ptsc_need_bump(void *, void *, int); 111 void ptsc_led(void *, int); 112 113 void ptsc_set_dma_adr(struct sfas_softc *, void *); 114 void ptsc_set_dma_tc(struct sfas_softc *, unsigned int); 115 void ptsc_set_dma_mode(struct sfas_softc *, int); 116 117 /* 118 * if we are a Power-tec SCSI-2 card 119 */ 120 int 121 ptscmatch(device_t parent, cfdata_t cf, void *aux) 122 { 123 struct podule_attach_args *pa = aux; 124 125 /* Look for the card */ 126 127 /* 128 * All Power-tec cards effectively have PowerROMS. Note, 129 * though, that here, if we fail to initialise the loader, we 130 * assume this _is_ the right kind of card. 131 */ 132 if (pa->pa_product == PODULE_ALSYSTEMS_SCSI && 133 (podulebus_initloader(pa) != 0 || 134 podloader_callloader(pa, 0, 0) == PRID_POWERTEC)) 135 return 1; 136 137 return 0; 138 } 139 140 void 141 ptscattach(device_t parent, device_t self, void *aux) 142 { 143 struct ptsc_softc *sc = device_private(self); 144 struct podule_attach_args *pa = aux; 145 ptsc_regmap_p rp = &sc->sc_regmap; 146 vu_char *fas; 147 148 if (pa->pa_podule_number == -1) 149 panic("Podule has disappeared !"); 150 151 sc->sc_specific.sc_podule_number = pa->pa_podule_number; 152 sc->sc_specific.sc_podule = pa->pa_podule; 153 sc->sc_specific.sc_iobase = 154 (vu_char *)sc->sc_specific.sc_podule->fast_base; 155 156 rp->chipreset = &sc->sc_specific.sc_iobase[PTSC_CONTROL_CHIPRESET]; 157 rp->inten = &sc->sc_specific.sc_iobase[PTSC_CONTROL_INTEN]; 158 rp->status = &sc->sc_specific.sc_iobase[PTSC_STATUS]; 159 rp->term = &sc->sc_specific.sc_iobase[PTSC_CONTROL_TERM]; 160 rp->led = &sc->sc_specific.sc_iobase[PTSC_CONTROL_LED]; 161 fas = &sc->sc_specific.sc_iobase[PTSC_FASOFFSET_BASE]; 162 163 rp->FAS216.sfas_tc_low = &fas[PTSC_FASOFFSET_TCL]; 164 rp->FAS216.sfas_tc_mid = &fas[PTSC_FASOFFSET_TCM]; 165 rp->FAS216.sfas_fifo = &fas[PTSC_FASOFFSET_FIFO]; 166 rp->FAS216.sfas_command = &fas[PTSC_FASOFFSET_COMMAND]; 167 rp->FAS216.sfas_dest_id = &fas[PTSC_FASOFFSET_DESTID]; 168 rp->FAS216.sfas_timeout = &fas[PTSC_FASOFFSET_TIMEOUT]; 169 rp->FAS216.sfas_syncper = &fas[PTSC_FASOFFSET_PERIOD]; 170 rp->FAS216.sfas_syncoff = &fas[PTSC_FASOFFSET_OFFSET]; 171 rp->FAS216.sfas_config1 = &fas[PTSC_FASOFFSET_CONFIG1]; 172 rp->FAS216.sfas_clkconv = &fas[PTSC_FASOFFSET_CLOCKCONV]; 173 rp->FAS216.sfas_test = &fas[PTSC_FASOFFSET_TEST]; 174 rp->FAS216.sfas_config2 = &fas[PTSC_FASOFFSET_CONFIG2]; 175 rp->FAS216.sfas_config3 = &fas[PTSC_FASOFFSET_CONFIG3]; 176 rp->FAS216.sfas_tc_high = &fas[PTSC_FASOFFSET_TCH]; 177 rp->FAS216.sfas_fifo_bot = &fas[PTSC_FASOFFSET_FIFOBOTTOM]; 178 179 sc->sc_softc.sc_fas = (sfas_regmap_p)rp; 180 sc->sc_softc.sc_spec = &sc->sc_specific; 181 182 sc->sc_softc.sc_led = ptsc_led; 183 184 sc->sc_softc.sc_setup_dma = ptsc_setup_dma; 185 sc->sc_softc.sc_build_dma_chain = ptsc_build_dma_chain; 186 sc->sc_softc.sc_need_bump = ptsc_need_bump; 187 188 sc->sc_softc.sc_clock_freq = 40; /* Power-Tec runs at 8MHz */ 189 sc->sc_softc.sc_timeout = 250; /* Set default timeout to 250ms */ 190 sc->sc_softc.sc_config_flags = SFAS_NO_DMA /*| SFAS_NF_DEBUG*/; 191 sc->sc_softc.sc_host_id = 7; /* Should check the jumpers */ 192 193 sc->sc_softc.sc_bump_sz = PAGE_SIZE; 194 sc->sc_softc.sc_bump_pa = 0x0; 195 196 sfasinitialize((struct sfas_softc *)sc); 197 198 sc->sc_softc.sc_adapter.adapt_dev = &sc->sc_softc.sc_dev; 199 sc->sc_softc.sc_adapter.adapt_nchannels = 1; 200 sc->sc_softc.sc_adapter.adapt_openings = 7; 201 sc->sc_softc.sc_adapter.adapt_max_periph = 1; 202 sc->sc_softc.sc_adapter.adapt_ioctl = NULL; 203 sc->sc_softc.sc_adapter.adapt_minphys = sfas_minphys; 204 sc->sc_softc.sc_adapter.adapt_request = sfas_scsi_request; 205 206 sc->sc_softc.sc_channel.chan_adapter = &sc->sc_softc.sc_adapter; 207 sc->sc_softc.sc_channel.chan_bustype = &scsi_bustype; 208 sc->sc_softc.sc_channel.chan_channel = 0; 209 sc->sc_softc.sc_channel.chan_ntargets = 8; 210 sc->sc_softc.sc_channel.chan_nluns = 8; 211 sc->sc_softc.sc_channel.chan_id = sc->sc_softc.sc_host_id; 212 213 /* Provide an override for the host id */ 214 (void)get_bootconf_option(boot_args, "ptsc.hostid", 215 BOOTOPT_TYPE_INT, &sc->sc_softc.sc_channel.chan_id); 216 217 printf(": host=%d", sc->sc_softc.sc_channel.chan_id); 218 219 /* initialise the card */ 220 /* *rp->term = 0;*/ 221 *rp->inten = (PTSC_POLL?0:1); 222 *rp->led = 0; 223 224 #if PTSC_POLL == 0 225 evcnt_attach_dynamic(&sc->sc_softc.sc_intrcnt, EVCNT_TYPE_INTR, NULL, 226 device_xname(self), "intr"); 227 sc->sc_softc.sc_ih = podulebus_irq_establish(pa->pa_ih, IPL_BIO, 228 ptsc_intr, &sc->sc_softc, &sc->sc_softc.sc_intrcnt); 229 if (sc->sc_softc.sc_ih == NULL) 230 panic("%s: Cannot install IRQ handler", device_xname(self)); 231 #else 232 printf(" polling"); 233 sc->sc_softc.sc_adapter.adapt_flags = SCSIPI_ADAPT_POLL_ONLY; 234 #endif 235 236 printf("\n"); 237 238 /* attach all scsi units on us */ 239 config_found(self, &sc->sc_softc.sc_channel, scsiprint); 240 } 241 242 243 int 244 ptsc_intr(void *arg) 245 { 246 struct sfas_softc *dev = arg; 247 ptsc_regmap_p rp; 248 int quickints; 249 250 rp = (ptsc_regmap_p)dev->sc_fas; 251 252 if (*rp->FAS216.sfas_status & SFAS_STAT_INTERRUPT_PENDING) { 253 quickints = 16; 254 do { 255 dev->sc_status = *rp->FAS216.sfas_status; 256 dev->sc_interrupt = *rp->FAS216.sfas_interrupt; 257 258 if (dev->sc_interrupt & SFAS_INT_RESELECTED) { 259 dev->sc_resel[0] = *rp->FAS216.sfas_fifo; 260 dev->sc_resel[1] = *rp->FAS216.sfas_fifo; 261 } 262 263 sfasintr(dev); 264 265 } while((*rp->FAS216.sfas_status & SFAS_STAT_INTERRUPT_PENDING) 266 && --quickints); 267 } 268 269 return(0); /* Pass interrupt on down the chain */ 270 } 271 272 /* Load transfer address into DMA register */ 273 void 274 ptsc_set_dma_adr(struct sfas_softc *sc, void *ptr) 275 { 276 #if 0 277 ptsc_regmap_p rp; 278 unsigned int *p; 279 unsigned int d; 280 #endif 281 #if 0 282 printf("ptsc_set_dma_adr(sc = 0x%08x, ptr = 0x%08x)\n", (u_int)sc, (u_int)ptr); 283 #endif 284 return; 285 #if 0 286 rp = (ptsc_regmap_p)sc->sc_fas; 287 288 d = (unsigned int)ptr; 289 p = (unsigned int *)((d & 0xFFFFFF) + (int)rp->dmabase); 290 291 *rp->clear=0; 292 *p = d; 293 #endif 294 } 295 296 /* Set DMA transfer counter */ 297 void 298 ptsc_set_dma_tc(struct sfas_softc *sc, unsigned int len) 299 { 300 printf("ptsc_set_dma_tc(sc, len = 0x%08x)", len); 301 302 *sc->sc_fas->sfas_tc_low = len; len >>= 8; 303 *sc->sc_fas->sfas_tc_mid = len; len >>= 8; 304 *sc->sc_fas->sfas_tc_high = len; 305 } 306 307 /* Set DMA mode */ 308 void 309 ptsc_set_dma_mode(struct sfas_softc *sc, int mode) 310 { 311 #if 0 312 struct csc_specific *spec; 313 314 spec = sc->sc_spec; 315 316 spec->portbits = (spec->portbits & ~FLSC_PB_DMA_BITS) | mode; 317 *((flsc_regmap_p)sc->sc_fas)->hardbits = spec->portbits; 318 #endif 319 } 320 321 /* Initialize DMA for transfer */ 322 int 323 ptsc_setup_dma(void *v, void *ptr, int len, int mode) 324 { 325 return(0); 326 327 #if 0 328 struct sfas_softc *sc = v; 329 int retval; 330 331 retval = 0; 332 333 printf("ptsc_setup_dma(sc, ptr = 0x%08x, len = 0x%08x, mode = 0x%08x)\n", (u_int)ptr, len, mode); 334 335 switch(mode) { 336 case SFAS_DMA_READ: 337 case SFAS_DMA_WRITE: 338 flsc_set_dma_adr(sc, ptr); 339 if (mode == SFAS_DMA_READ) 340 flsc_set_dma_mode(sc,FLSC_PB_ENABLE_DMA | FLSC_PB_DMA_READ); 341 else 342 flsc_set_dma_mode(sc,FLSC_PB_ENABLE_DMA | FLSC_PB_DMA_WRITE); 343 344 flsc_set_dma_tc(sc, len); 345 break; 346 347 case SFAS_DMA_CLEAR: 348 default: 349 flsc_set_dma_mode(sc, FLSC_PB_DISABLE_DMA); 350 flsc_set_dma_adr(sc, 0); 351 352 retval = (*sc->sc_fas->sfas_tc_high << 16) | 353 (*sc->sc_fas->sfas_tc_mid << 8) | 354 *sc->sc_fas->sfas_tc_low; 355 356 flsc_set_dma_tc(sc, 0); 357 break; 358 } 359 360 return(retval); 361 #endif 362 } 363 364 /* Check if address and len is ok for DMA transfer */ 365 int 366 ptsc_need_bump(void *v, void *ptr, int len) 367 { 368 int p; 369 370 p = (int)ptr & 0x03; 371 372 if (p) { 373 p = 4-p; 374 375 if (len < 256) 376 p = len; 377 } 378 379 return(p); 380 } 381 382 /* Interrupt driven routines */ 383 int 384 ptsc_build_dma_chain(void *v1, void *v2, void *p, int l) 385 { 386 #if 0 387 vm_offset_t pa, lastpa; 388 char *ptr; 389 int len, prelen, postlen, max_t, n; 390 #endif 391 #if 0 392 printf("ptsc_build_dma_chain()\n"); 393 #endif 394 return(0); 395 396 #if 0 397 if (l == 0) 398 return(0); 399 400 #define set_link(n, p, l, f)\ 401 do { chain[n].ptr = (p); chain[n].len = (l); chain[n++].flg = (f); } while(0) 402 403 n = 0; 404 405 if (l < 512) 406 set_link(n, (vm_offset_t)p, l, SFAS_CHAIN_BUMP); 407 else if (p >= (void *)0xFF000000) { 408 while(l != 0) { 409 len = ((l > sc->sc_bump_sz) ? sc->sc_bump_sz : l); 410 411 set_link(n, (vm_offset_t)p, len, SFAS_CHAIN_BUMP); 412 413 p += len; 414 l -= len; 415 } 416 } else { 417 ptr = p; 418 len = l; 419 420 pa = kvtop(ptr); 421 prelen = ((int)ptr & 0x03); 422 423 if (prelen) { 424 prelen = 4-prelen; 425 set_link(n, (vm_offset_t)ptr, prelen, SFAS_CHAIN_BUMP); 426 ptr += prelen; 427 len -= prelen; 428 } 429 430 lastpa = 0; 431 while(len > 3) { 432 pa = kvtop(ptr); 433 max_t = PAGE_SIZE - (pa & PGOFSET); 434 if (max_t > len) 435 max_t = len; 436 437 max_t &= ~3; 438 439 if (lastpa == pa) 440 sc->sc_chain[n-1].len += max_t; 441 else 442 set_link(n, pa, max_t, SFAS_CHAIN_DMA); 443 444 lastpa = pa+max_t; 445 446 ptr += max_t; 447 len -= max_t; 448 } 449 450 if (len) 451 set_link(n, (vm_offset_t)ptr, len, SFAS_CHAIN_BUMP); 452 } 453 454 return(n); 455 #endif 456 } 457 458 /* Turn on/off led */ 459 void 460 ptsc_led(void *v, int mode) 461 { 462 struct sfas_softc *sc = v; 463 ptsc_regmap_p rp; 464 465 rp = (ptsc_regmap_p)sc->sc_fas; 466 467 if (mode) { 468 sc->sc_led_status++; 469 } else { 470 if (sc->sc_led_status) 471 sc->sc_led_status--; 472 } 473 *rp->led = (sc->sc_led_status?1:0); 474 } 475