ptsc.c revision 1.13.94.1
1 /* $NetBSD: ptsc.c,v 1.13.94.1 2009/05/13 17:16:03 jym 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 1.13.94.1 2009/05/13 17:16:03 jym 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(struct device *, struct cfdata *, void *); 102 void ptscattach(struct device *, struct device *, 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(struct device *pdp, struct cfdata *cf, void *auxp) 122 { 123 struct podule_attach_args *pa = (struct podule_attach_args *)auxp; 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(struct device *pdp, struct device *dp, void *auxp) 142 { 143 struct ptsc_softc *sc = (struct ptsc_softc *)dp; 144 struct podule_attach_args *pa; 145 ptsc_regmap_p rp = &sc->sc_regmap; 146 vu_char *fas; 147 148 pa = (struct podule_attach_args *)auxp; 149 150 if (pa->pa_podule_number == -1) 151 panic("Podule has disappeared !"); 152 153 sc->sc_specific.sc_podule_number = pa->pa_podule_number; 154 sc->sc_specific.sc_podule = pa->pa_podule; 155 sc->sc_specific.sc_iobase = 156 (vu_char *)sc->sc_specific.sc_podule->fast_base; 157 158 rp->chipreset = &sc->sc_specific.sc_iobase[PTSC_CONTROL_CHIPRESET]; 159 rp->inten = &sc->sc_specific.sc_iobase[PTSC_CONTROL_INTEN]; 160 rp->status = &sc->sc_specific.sc_iobase[PTSC_STATUS]; 161 rp->term = &sc->sc_specific.sc_iobase[PTSC_CONTROL_TERM]; 162 rp->led = &sc->sc_specific.sc_iobase[PTSC_CONTROL_LED]; 163 fas = &sc->sc_specific.sc_iobase[PTSC_FASOFFSET_BASE]; 164 165 rp->FAS216.sfas_tc_low = &fas[PTSC_FASOFFSET_TCL]; 166 rp->FAS216.sfas_tc_mid = &fas[PTSC_FASOFFSET_TCM]; 167 rp->FAS216.sfas_fifo = &fas[PTSC_FASOFFSET_FIFO]; 168 rp->FAS216.sfas_command = &fas[PTSC_FASOFFSET_COMMAND]; 169 rp->FAS216.sfas_dest_id = &fas[PTSC_FASOFFSET_DESTID]; 170 rp->FAS216.sfas_timeout = &fas[PTSC_FASOFFSET_TIMEOUT]; 171 rp->FAS216.sfas_syncper = &fas[PTSC_FASOFFSET_PERIOD]; 172 rp->FAS216.sfas_syncoff = &fas[PTSC_FASOFFSET_OFFSET]; 173 rp->FAS216.sfas_config1 = &fas[PTSC_FASOFFSET_CONFIG1]; 174 rp->FAS216.sfas_clkconv = &fas[PTSC_FASOFFSET_CLOCKCONV]; 175 rp->FAS216.sfas_test = &fas[PTSC_FASOFFSET_TEST]; 176 rp->FAS216.sfas_config2 = &fas[PTSC_FASOFFSET_CONFIG2]; 177 rp->FAS216.sfas_config3 = &fas[PTSC_FASOFFSET_CONFIG3]; 178 rp->FAS216.sfas_tc_high = &fas[PTSC_FASOFFSET_TCH]; 179 rp->FAS216.sfas_fifo_bot = &fas[PTSC_FASOFFSET_FIFOBOTTOM]; 180 181 sc->sc_softc.sc_fas = (sfas_regmap_p)rp; 182 sc->sc_softc.sc_spec = &sc->sc_specific; 183 184 sc->sc_softc.sc_led = ptsc_led; 185 186 sc->sc_softc.sc_setup_dma = ptsc_setup_dma; 187 sc->sc_softc.sc_build_dma_chain = ptsc_build_dma_chain; 188 sc->sc_softc.sc_need_bump = ptsc_need_bump; 189 190 sc->sc_softc.sc_clock_freq = 40; /* Power-Tec runs at 8MHz */ 191 sc->sc_softc.sc_timeout = 250; /* Set default timeout to 250ms */ 192 sc->sc_softc.sc_config_flags = SFAS_NO_DMA /*| SFAS_NF_DEBUG*/; 193 sc->sc_softc.sc_host_id = 7; /* Should check the jumpers */ 194 195 sc->sc_softc.sc_bump_sz = PAGE_SIZE; 196 sc->sc_softc.sc_bump_pa = 0x0; 197 198 sfasinitialize((struct sfas_softc *)sc); 199 200 sc->sc_softc.sc_adapter.adapt_dev = &sc->sc_softc.sc_dev; 201 sc->sc_softc.sc_adapter.adapt_nchannels = 1; 202 sc->sc_softc.sc_adapter.adapt_openings = 7; 203 sc->sc_softc.sc_adapter.adapt_max_periph = 1; 204 sc->sc_softc.sc_adapter.adapt_ioctl = NULL; 205 sc->sc_softc.sc_adapter.adapt_minphys = sfas_minphys; 206 sc->sc_softc.sc_adapter.adapt_request = sfas_scsi_request; 207 208 sc->sc_softc.sc_channel.chan_adapter = &sc->sc_softc.sc_adapter; 209 sc->sc_softc.sc_channel.chan_bustype = &scsi_bustype; 210 sc->sc_softc.sc_channel.chan_channel = 0; 211 sc->sc_softc.sc_channel.chan_ntargets = 8; 212 sc->sc_softc.sc_channel.chan_nluns = 8; 213 sc->sc_softc.sc_channel.chan_id = sc->sc_softc.sc_host_id; 214 215 /* Provide an override for the host id */ 216 (void)get_bootconf_option(boot_args, "ptsc.hostid", 217 BOOTOPT_TYPE_INT, &sc->sc_softc.sc_channel.chan_id); 218 219 printf(": host=%d", sc->sc_softc.sc_channel.chan_id); 220 221 /* initialise the card */ 222 /* *rp->term = 0;*/ 223 *rp->inten = (PTSC_POLL?0:1); 224 *rp->led = 0; 225 226 #if PTSC_POLL == 0 227 evcnt_attach_dynamic(&sc->sc_softc.sc_intrcnt, EVCNT_TYPE_INTR, NULL, 228 device_xname(dp), "intr"); 229 sc->sc_softc.sc_ih = podulebus_irq_establish(pa->pa_ih, IPL_BIO, 230 ptsc_intr, &sc->sc_softc, &sc->sc_softc.sc_intrcnt); 231 if (sc->sc_softc.sc_ih == NULL) 232 panic("%s: Cannot install IRQ handler", dp->dv_xname); 233 #else 234 printf(" polling"); 235 sc->sc_softc.sc_adapter.adapt_flags = SCSIPI_ADAPT_POLL_ONLY; 236 #endif 237 238 printf("\n"); 239 240 /* attach all scsi units on us */ 241 config_found(dp, &sc->sc_softc.sc_channel, scsiprint); 242 } 243 244 245 int 246 ptsc_intr(void *arg) 247 { 248 struct sfas_softc *dev = arg; 249 ptsc_regmap_p rp; 250 int quickints; 251 252 rp = (ptsc_regmap_p)dev->sc_fas; 253 254 if (*rp->FAS216.sfas_status & SFAS_STAT_INTERRUPT_PENDING) { 255 quickints = 16; 256 do { 257 dev->sc_status = *rp->FAS216.sfas_status; 258 dev->sc_interrupt = *rp->FAS216.sfas_interrupt; 259 260 if (dev->sc_interrupt & SFAS_INT_RESELECTED) { 261 dev->sc_resel[0] = *rp->FAS216.sfas_fifo; 262 dev->sc_resel[1] = *rp->FAS216.sfas_fifo; 263 } 264 265 sfasintr(dev); 266 267 } while((*rp->FAS216.sfas_status & SFAS_STAT_INTERRUPT_PENDING) 268 && --quickints); 269 } 270 271 return(0); /* Pass interrupt on down the chain */ 272 } 273 274 /* Load transfer address into DMA register */ 275 void 276 ptsc_set_dma_adr(struct sfas_softc *sc, void *ptr) 277 { 278 #if 0 279 ptsc_regmap_p rp; 280 unsigned int *p; 281 unsigned int d; 282 #endif 283 #if 0 284 printf("ptsc_set_dma_adr(sc = 0x%08x, ptr = 0x%08x)\n", (u_int)sc, (u_int)ptr); 285 #endif 286 return; 287 #if 0 288 rp = (ptsc_regmap_p)sc->sc_fas; 289 290 d = (unsigned int)ptr; 291 p = (unsigned int *)((d & 0xFFFFFF) + (int)rp->dmabase); 292 293 *rp->clear=0; 294 *p = d; 295 #endif 296 } 297 298 /* Set DMA transfer counter */ 299 void 300 ptsc_set_dma_tc(struct sfas_softc *sc, unsigned int len) 301 { 302 printf("ptsc_set_dma_tc(sc, len = 0x%08x)", len); 303 304 *sc->sc_fas->sfas_tc_low = len; len >>= 8; 305 *sc->sc_fas->sfas_tc_mid = len; len >>= 8; 306 *sc->sc_fas->sfas_tc_high = len; 307 } 308 309 /* Set DMA mode */ 310 void 311 ptsc_set_dma_mode(struct sfas_softc *sc, int mode) 312 { 313 #if 0 314 struct csc_specific *spec; 315 316 spec = sc->sc_spec; 317 318 spec->portbits = (spec->portbits & ~FLSC_PB_DMA_BITS) | mode; 319 *((flsc_regmap_p)sc->sc_fas)->hardbits = spec->portbits; 320 #endif 321 } 322 323 /* Initialize DMA for transfer */ 324 int 325 ptsc_setup_dma(void *v, void *ptr, int len, int mode) 326 { 327 return(0); 328 329 #if 0 330 struct sfas_softc *sc = v; 331 int retval; 332 333 retval = 0; 334 335 printf("ptsc_setup_dma(sc, ptr = 0x%08x, len = 0x%08x, mode = 0x%08x)\n", (u_int)ptr, len, mode); 336 337 switch(mode) { 338 case SFAS_DMA_READ: 339 case SFAS_DMA_WRITE: 340 flsc_set_dma_adr(sc, ptr); 341 if (mode == SFAS_DMA_READ) 342 flsc_set_dma_mode(sc,FLSC_PB_ENABLE_DMA | FLSC_PB_DMA_READ); 343 else 344 flsc_set_dma_mode(sc,FLSC_PB_ENABLE_DMA | FLSC_PB_DMA_WRITE); 345 346 flsc_set_dma_tc(sc, len); 347 break; 348 349 case SFAS_DMA_CLEAR: 350 default: 351 flsc_set_dma_mode(sc, FLSC_PB_DISABLE_DMA); 352 flsc_set_dma_adr(sc, 0); 353 354 retval = (*sc->sc_fas->sfas_tc_high << 16) | 355 (*sc->sc_fas->sfas_tc_mid << 8) | 356 *sc->sc_fas->sfas_tc_low; 357 358 flsc_set_dma_tc(sc, 0); 359 break; 360 } 361 362 return(retval); 363 #endif 364 } 365 366 /* Check if address and len is ok for DMA transfer */ 367 int 368 ptsc_need_bump(void *v, void *ptr, int len) 369 { 370 int p; 371 372 p = (int)ptr & 0x03; 373 374 if (p) { 375 p = 4-p; 376 377 if (len < 256) 378 p = len; 379 } 380 381 return(p); 382 } 383 384 /* Interrupt driven routines */ 385 int 386 ptsc_build_dma_chain(void *v1, void *v2, void *p, int l) 387 { 388 #if 0 389 vm_offset_t pa, lastpa; 390 char *ptr; 391 int len, prelen, postlen, max_t, n; 392 #endif 393 #if 0 394 printf("ptsc_build_dma_chain()\n"); 395 #endif 396 return(0); 397 398 #if 0 399 if (l == 0) 400 return(0); 401 402 #define set_link(n, p, l, f)\ 403 do { chain[n].ptr = (p); chain[n].len = (l); chain[n++].flg = (f); } while(0) 404 405 n = 0; 406 407 if (l < 512) 408 set_link(n, (vm_offset_t)p, l, SFAS_CHAIN_BUMP); 409 else if (p >= (void *)0xFF000000) { 410 while(l != 0) { 411 len = ((l > sc->sc_bump_sz) ? sc->sc_bump_sz : l); 412 413 set_link(n, (vm_offset_t)p, len, SFAS_CHAIN_BUMP); 414 415 p += len; 416 l -= len; 417 } 418 } else { 419 ptr = p; 420 len = l; 421 422 pa = kvtop(ptr); 423 prelen = ((int)ptr & 0x03); 424 425 if (prelen) { 426 prelen = 4-prelen; 427 set_link(n, (vm_offset_t)ptr, prelen, SFAS_CHAIN_BUMP); 428 ptr += prelen; 429 len -= prelen; 430 } 431 432 lastpa = 0; 433 while(len > 3) { 434 pa = kvtop(ptr); 435 max_t = PAGE_SIZE - (pa & PGOFSET); 436 if (max_t > len) 437 max_t = len; 438 439 max_t &= ~3; 440 441 if (lastpa == pa) 442 sc->sc_chain[n-1].len += max_t; 443 else 444 set_link(n, pa, max_t, SFAS_CHAIN_DMA); 445 446 lastpa = pa+max_t; 447 448 ptr += max_t; 449 len -= max_t; 450 } 451 452 if (len) 453 set_link(n, (vm_offset_t)ptr, len, SFAS_CHAIN_BUMP); 454 } 455 456 return(n); 457 #endif 458 } 459 460 /* Turn on/off led */ 461 void 462 ptsc_led(void *v, int mode) 463 { 464 struct sfas_softc *sc = v; 465 ptsc_regmap_p rp; 466 467 rp = (ptsc_regmap_p)sc->sc_fas; 468 469 if (mode) { 470 sc->sc_led_status++; 471 } else { 472 if (sc->sc_led_status) 473 sc->sc_led_status--; 474 } 475 *rp->led = (sc->sc_led_status?1:0); 476 } 477
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