ptsc.c revision 1.4
1 /* $NetBSD: ptsc.c,v 1.4 2002/09/27 15:35:31 provos Exp $ */ 2 3 /* 4 * Copyright (c) 1995 Scott Stevens 5 * Copyright (c) 1995 Daniel Widenfalk 6 * Copyright (c) 1994 Christian E. Hopps 7 * Copyright (c) 1982, 1990 The Regents of the University of California. 8 * All rights reserved. 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 University of 21 * California, Berkeley and its contributors. 22 * 4. Neither the name of the University nor the names of its contributors 23 * may be used to endorse or promote products derived from this software 24 * without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 * 38 * @(#)ptsc.c 39 */ 40 41 /* 42 * Power-tec SCSI-2 driver uses SFAS216 generic driver 43 * 44 * Thanks to Alsystems for loaning a development card and providing 45 * programming information. 46 */ 47 48 #include <sys/param.h> 49 #include <sys/systm.h> 50 #include <sys/kernel.h> 51 #include <sys/device.h> 52 #include <dev/scsipi/scsi_all.h> 53 #include <dev/scsipi/scsipi_all.h> 54 #include <dev/scsipi/scsiconf.h> 55 #include <uvm/uvm_extern.h> 56 #include <machine/pmap.h> 57 #include <machine/io.h> 58 #include <machine/intr.h> 59 #include <machine/bootconfig.h> 60 #include <acorn32/podulebus/podulebus.h> 61 #include <acorn32/podulebus/sfasreg.h> 62 #include <acorn32/podulebus/sfasvar.h> 63 #include <acorn32/podulebus/ptscreg.h> 64 #include <acorn32/podulebus/ptscvar.h> 65 #include <dev/podulebus/podules.h> 66 #include <dev/podulebus/powerromreg.h> 67 68 void ptscattach __P((struct device *, struct device *, void *)); 69 int ptscmatch __P((struct device *, struct cfdata *, void *)); 70 71 struct cfattach ptsc_ca = { 72 sizeof(struct ptsc_softc), ptscmatch, ptscattach 73 }; 74 75 int ptsc_intr __P((void *arg)); 76 int ptsc_setup_dma __P((struct sfas_softc *sc, void *ptr, int len, 77 int mode)); 78 int ptsc_build_dma_chain __P((struct sfas_softc *sc, 79 struct sfas_dma_chain *chain, void *p, int l)); 80 int ptsc_need_bump __P((struct sfas_softc *sc, void *ptr, int len)); 81 void ptsc_led __P((struct sfas_softc *sc, int mode)); 82 83 /* 84 * if we are a Power-tec SCSI-2 card 85 */ 86 int 87 ptscmatch(pdp, cf, auxp) 88 struct device *pdp; 89 struct cfdata *cf; 90 void *auxp; 91 { 92 struct podule_attach_args *pa = (struct podule_attach_args *)auxp; 93 94 /* Look for the card */ 95 96 /* 97 * All Power-tec cards effectively have PowerROMS. Note, 98 * though, that here, if we fail to initialise the loader, we 99 * assume this _is_ the right kind of card. 100 */ 101 if (pa->pa_product == PODULE_ALSYSTEMS_SCSI && 102 (podulebus_initloader(pa) != 0 || 103 podloader_callloader(pa, 0, 0) == PRID_POWERTEC)) 104 return 1; 105 106 return 0; 107 } 108 109 void 110 ptscattach(pdp, dp, auxp) 111 struct device *pdp; 112 struct device *dp; 113 void *auxp; 114 { 115 struct ptsc_softc *sc = (struct ptsc_softc *)dp; 116 struct podule_attach_args *pa; 117 ptsc_regmap_p rp = &sc->sc_regmap; 118 vu_char *fas; 119 120 pa = (struct podule_attach_args *)auxp; 121 122 if (pa->pa_podule_number == -1) 123 panic("Podule has disappeared !"); 124 125 sc->sc_specific.sc_podule_number = pa->pa_podule_number; 126 sc->sc_specific.sc_podule = pa->pa_podule; 127 sc->sc_specific.sc_iobase = 128 (vu_char *)sc->sc_specific.sc_podule->fast_base; 129 130 rp->chipreset = &sc->sc_specific.sc_iobase[PTSC_CONTROL_CHIPRESET]; 131 rp->inten = &sc->sc_specific.sc_iobase[PTSC_CONTROL_INTEN]; 132 rp->status = &sc->sc_specific.sc_iobase[PTSC_STATUS]; 133 rp->term = &sc->sc_specific.sc_iobase[PTSC_CONTROL_TERM]; 134 rp->led = &sc->sc_specific.sc_iobase[PTSC_CONTROL_LED]; 135 fas = &sc->sc_specific.sc_iobase[PTSC_FASOFFSET_BASE]; 136 137 rp->FAS216.sfas_tc_low = &fas[PTSC_FASOFFSET_TCL]; 138 rp->FAS216.sfas_tc_mid = &fas[PTSC_FASOFFSET_TCM]; 139 rp->FAS216.sfas_fifo = &fas[PTSC_FASOFFSET_FIFO]; 140 rp->FAS216.sfas_command = &fas[PTSC_FASOFFSET_COMMAND]; 141 rp->FAS216.sfas_dest_id = &fas[PTSC_FASOFFSET_DESTID]; 142 rp->FAS216.sfas_timeout = &fas[PTSC_FASOFFSET_TIMEOUT]; 143 rp->FAS216.sfas_syncper = &fas[PTSC_FASOFFSET_PERIOD]; 144 rp->FAS216.sfas_syncoff = &fas[PTSC_FASOFFSET_OFFSET]; 145 rp->FAS216.sfas_config1 = &fas[PTSC_FASOFFSET_CONFIG1]; 146 rp->FAS216.sfas_clkconv = &fas[PTSC_FASOFFSET_CLOCKCONV]; 147 rp->FAS216.sfas_test = &fas[PTSC_FASOFFSET_TEST]; 148 rp->FAS216.sfas_config2 = &fas[PTSC_FASOFFSET_CONFIG2]; 149 rp->FAS216.sfas_config3 = &fas[PTSC_FASOFFSET_CONFIG3]; 150 rp->FAS216.sfas_tc_high = &fas[PTSC_FASOFFSET_TCH]; 151 rp->FAS216.sfas_fifo_bot = &fas[PTSC_FASOFFSET_FIFOBOTTOM]; 152 153 sc->sc_softc.sc_fas = (sfas_regmap_p)rp; 154 sc->sc_softc.sc_spec = &sc->sc_specific; 155 156 sc->sc_softc.sc_led = ptsc_led; 157 158 sc->sc_softc.sc_setup_dma = ptsc_setup_dma; 159 sc->sc_softc.sc_build_dma_chain = ptsc_build_dma_chain; 160 sc->sc_softc.sc_need_bump = ptsc_need_bump; 161 162 sc->sc_softc.sc_clock_freq = 40; /* Power-Tec runs at 8MHz */ 163 sc->sc_softc.sc_timeout = 250; /* Set default timeout to 250ms */ 164 sc->sc_softc.sc_config_flags = SFAS_NO_DMA /*| SFAS_NF_DEBUG*/; 165 sc->sc_softc.sc_host_id = 7; /* Should check the jumpers */ 166 167 sc->sc_softc.sc_bump_sz = NBPG; 168 sc->sc_softc.sc_bump_pa = 0x0; 169 170 sfasinitialize((struct sfas_softc *)sc); 171 172 sc->sc_softc.sc_adapter.adapt_dev = &sc->sc_softc.sc_dev; 173 sc->sc_softc.sc_adapter.adapt_nchannels = 1; 174 sc->sc_softc.sc_adapter.adapt_openings = 7; 175 sc->sc_softc.sc_adapter.adapt_max_periph = 1; 176 sc->sc_softc.sc_adapter.adapt_ioctl = NULL; 177 sc->sc_softc.sc_adapter.adapt_minphys = sfas_minphys; 178 sc->sc_softc.sc_adapter.adapt_request = sfas_scsi_request; 179 180 sc->sc_softc.sc_channel.chan_adapter = &sc->sc_softc.sc_adapter; 181 sc->sc_softc.sc_channel.chan_bustype = &scsi_bustype; 182 sc->sc_softc.sc_channel.chan_channel = 0; 183 sc->sc_softc.sc_channel.chan_ntargets = 8; 184 sc->sc_softc.sc_channel.chan_nluns = 8; 185 sc->sc_softc.sc_channel.chan_id = sc->sc_softc.sc_host_id; 186 187 /* Provide an override for the host id */ 188 (void)get_bootconf_option(boot_args, "ptsc.hostid", 189 BOOTOPT_TYPE_INT, &sc->sc_softc.sc_channel.chan_id); 190 191 printf(": host=%d", sc->sc_softc.sc_channel.chan_id); 192 193 /* initialise the card */ 194 /* *rp->term = 0;*/ 195 *rp->inten = (PTSC_POLL?0:1); 196 *rp->led = 0; 197 198 #if PTSC_POLL == 0 199 evcnt_attach_dynamic(&sc->sc_softc.sc_intrcnt, EVCNT_TYPE_INTR, NULL, 200 dp->dv_xname, "intr"); 201 sc->sc_softc.sc_ih = podulebus_irq_establish(pa->pa_ih, IPL_BIO, 202 ptsc_intr, &sc->sc_softc, &sc->sc_softc.sc_intrcnt); 203 if (sc->sc_softc.sc_ih == NULL) 204 panic("%s: Cannot install IRQ handler", dp->dv_xname); 205 #else 206 printf(" polling"); 207 sc->sc_softc.sc_adapter.adapt_flags = SCSIPI_ADAPT_POLL_ONLY; 208 #endif 209 210 printf("\n"); 211 212 /* attach all scsi units on us */ 213 config_found(dp, &sc->sc_softc.sc_channel, scsiprint); 214 } 215 216 217 int 218 ptsc_intr(arg) 219 void *arg; 220 { 221 struct sfas_softc *dev = arg; 222 ptsc_regmap_p rp; 223 int quickints; 224 225 rp = (ptsc_regmap_p)dev->sc_fas; 226 227 if (*rp->FAS216.sfas_status & SFAS_STAT_INTERRUPT_PENDING) { 228 quickints = 16; 229 do { 230 dev->sc_status = *rp->FAS216.sfas_status; 231 dev->sc_interrupt = *rp->FAS216.sfas_interrupt; 232 233 if (dev->sc_interrupt & SFAS_INT_RESELECTED) { 234 dev->sc_resel[0] = *rp->FAS216.sfas_fifo; 235 dev->sc_resel[1] = *rp->FAS216.sfas_fifo; 236 } 237 238 sfasintr(dev); 239 240 } while((*rp->FAS216.sfas_status & SFAS_STAT_INTERRUPT_PENDING) 241 && --quickints); 242 } 243 244 return(0); /* Pass interrupt on down the chain */ 245 } 246 247 /* Load transfer address into dma register */ 248 void 249 ptsc_set_dma_adr(sc, ptr) 250 struct sfas_softc *sc; 251 void *ptr; 252 { 253 #if 0 254 ptsc_regmap_p rp; 255 unsigned int *p; 256 unsigned int d; 257 #endif 258 #if 0 259 printf("ptsc_set_dma_adr(sc = 0x%08x, ptr = 0x%08x)\n", (u_int)sc, (u_int)ptr); 260 #endif 261 return; 262 #if 0 263 rp = (ptsc_regmap_p)sc->sc_fas; 264 265 d = (unsigned int)ptr; 266 p = (unsigned int *)((d & 0xFFFFFF) + (int)rp->dmabase); 267 268 *rp->clear=0; 269 *p = d; 270 #endif 271 } 272 273 /* Set DMA transfer counter */ 274 void 275 ptsc_set_dma_tc(sc, len) 276 struct sfas_softc *sc; 277 unsigned int len; 278 { 279 printf("ptsc_set_dma_tc(sc, len = 0x%08x)", len); 280 281 *sc->sc_fas->sfas_tc_low = len; len >>= 8; 282 *sc->sc_fas->sfas_tc_mid = len; len >>= 8; 283 *sc->sc_fas->sfas_tc_high = len; 284 } 285 286 /* Set DMA mode */ 287 void 288 ptsc_set_dma_mode(sc, mode) 289 struct sfas_softc *sc; 290 int mode; 291 { 292 #if 0 293 struct csc_specific *spec; 294 295 spec = sc->sc_spec; 296 297 spec->portbits = (spec->portbits & ~FLSC_PB_DMA_BITS) | mode; 298 *((flsc_regmap_p)sc->sc_fas)->hardbits = spec->portbits; 299 #endif 300 } 301 302 /* Initialize DMA for transfer */ 303 int 304 ptsc_setup_dma(sc, ptr, len, mode) 305 struct sfas_softc *sc; 306 void *ptr; 307 int len; 308 int mode; 309 { 310 int retval; 311 312 retval = 0; 313 314 #if 0 315 printf("ptsc_setup_dma(sc, ptr = 0x%08x, len = 0x%08x, mode = 0x%08x)\n", (u_int)ptr, len, mode); 316 #endif 317 return(0); 318 319 #if 0 320 switch(mode) { 321 case SFAS_DMA_READ: 322 case SFAS_DMA_WRITE: 323 flsc_set_dma_adr(sc, ptr); 324 if (mode == SFAS_DMA_READ) 325 flsc_set_dma_mode(sc,FLSC_PB_ENABLE_DMA | FLSC_PB_DMA_READ); 326 else 327 flsc_set_dma_mode(sc,FLSC_PB_ENABLE_DMA | FLSC_PB_DMA_WRITE); 328 329 flsc_set_dma_tc(sc, len); 330 break; 331 332 case SFAS_DMA_CLEAR: 333 default: 334 flsc_set_dma_mode(sc, FLSC_PB_DISABLE_DMA); 335 flsc_set_dma_adr(sc, 0); 336 337 retval = (*sc->sc_fas->sfas_tc_high << 16) | 338 (*sc->sc_fas->sfas_tc_mid << 8) | 339 *sc->sc_fas->sfas_tc_low; 340 341 flsc_set_dma_tc(sc, 0); 342 break; 343 } 344 345 return(retval); 346 #endif 347 } 348 349 /* Check if address and len is ok for DMA transfer */ 350 int 351 ptsc_need_bump(sc, ptr, len) 352 struct sfas_softc *sc; 353 void *ptr; 354 int len; 355 { 356 int p; 357 358 p = (int)ptr & 0x03; 359 360 if (p) { 361 p = 4-p; 362 363 if (len < 256) 364 p = len; 365 } 366 367 return(p); 368 } 369 370 /* Interrupt driven routines */ 371 int 372 ptsc_build_dma_chain(sc, chain, p, l) 373 struct sfas_softc *sc; 374 struct sfas_dma_chain *chain; 375 void *p; 376 int l; 377 { 378 #if 0 379 vm_offset_t pa, lastpa; 380 char *ptr; 381 int len, prelen, postlen, max_t, n; 382 #endif 383 #if 0 384 printf("ptsc_build_dma_chain()\n"); 385 #endif 386 return(0); 387 388 #if 0 389 if (l == 0) 390 return(0); 391 392 #define set_link(n, p, l, f)\ 393 do { chain[n].ptr = (p); chain[n].len = (l); chain[n++].flg = (f); } while(0) 394 395 n = 0; 396 397 if (l < 512) 398 set_link(n, (vm_offset_t)p, l, SFAS_CHAIN_BUMP); 399 else if (p >= (void *)0xFF000000) { 400 while(l != 0) { 401 len = ((l > sc->sc_bump_sz) ? sc->sc_bump_sz : l); 402 403 set_link(n, (vm_offset_t)p, len, SFAS_CHAIN_BUMP); 404 405 p += len; 406 l -= len; 407 } 408 } else { 409 ptr = p; 410 len = l; 411 412 pa = kvtop(ptr); 413 prelen = ((int)ptr & 0x03); 414 415 if (prelen) { 416 prelen = 4-prelen; 417 set_link(n, (vm_offset_t)ptr, prelen, SFAS_CHAIN_BUMP); 418 ptr += prelen; 419 len -= prelen; 420 } 421 422 lastpa = 0; 423 while(len > 3) { 424 pa = kvtop(ptr); 425 max_t = NBPG - (pa & PGOFSET); 426 if (max_t > len) 427 max_t = len; 428 429 max_t &= ~3; 430 431 if (lastpa == pa) 432 sc->sc_chain[n-1].len += max_t; 433 else 434 set_link(n, pa, max_t, SFAS_CHAIN_DMA); 435 436 lastpa = pa+max_t; 437 438 ptr += max_t; 439 len -= max_t; 440 } 441 442 if (len) 443 set_link(n, (vm_offset_t)ptr, len, SFAS_CHAIN_BUMP); 444 } 445 446 return(n); 447 #endif 448 } 449 450 /* Turn on/off led */ 451 void 452 ptsc_led(sc, mode) 453 struct sfas_softc *sc; 454 int mode; 455 { 456 ptsc_regmap_p rp; 457 458 rp = (ptsc_regmap_p)sc->sc_fas; 459 460 if (mode) { 461 sc->sc_led_status++; 462 } else { 463 if (sc->sc_led_status) 464 sc->sc_led_status--; 465 } 466 *rp->led = (sc->sc_led_status?1:0); 467 } 468
Indexes created Sun Oct 12 09:09:55 GMT 2025