ptsc.c revision 1.11
1 /* $NetBSD: ptsc.c,v 1.11 2003/07/14 22:48:26 lukem 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/cdefs.h> 49 __KERNEL_RCSID(0, "$NetBSD: ptsc.c,v 1.11 2003/07/14 22:48:26 lukem Exp $"); 50 51 #include <sys/param.h> 52 #include <sys/systm.h> 53 #include <sys/kernel.h> 54 #include <sys/device.h> 55 56 #include <uvm/uvm_extern.h> 57 58 #include <dev/scsipi/scsi_all.h> 59 #include <dev/scsipi/scsipi_all.h> 60 #include <dev/scsipi/scsiconf.h> 61 #include <machine/io.h> 62 #include <machine/intr.h> 63 #include <machine/bootconfig.h> 64 #include <acorn32/podulebus/podulebus.h> 65 #include <acorn32/podulebus/sfasreg.h> 66 #include <acorn32/podulebus/sfasvar.h> 67 #include <acorn32/podulebus/ptscreg.h> 68 #include <acorn32/podulebus/ptscvar.h> 69 #include <dev/podulebus/podules.h> 70 #include <dev/podulebus/powerromreg.h> 71 72 int ptscmatch __P((struct device *, struct cfdata *, void *)); 73 void ptscattach __P((struct device *, struct device *, void *)); 74 75 CFATTACH_DECL(ptsc, sizeof(struct ptsc_softc), 76 ptscmatch, ptscattach, NULL, NULL); 77 78 int ptsc_intr(void *); 79 int ptsc_setup_dma(void *, void *, int, int); 80 int ptsc_build_dma_chain(void *, void *, void *, int); 81 int ptsc_need_bump(void *, void *, int); 82 void ptsc_led(void *, int); 83 84 void ptsc_set_dma_adr(struct sfas_softc *, void *); 85 void ptsc_set_dma_tc(struct sfas_softc *, unsigned int); 86 void ptsc_set_dma_mode(struct sfas_softc *, int); 87 88 /* 89 * if we are a Power-tec SCSI-2 card 90 */ 91 int 92 ptscmatch(pdp, cf, auxp) 93 struct device *pdp; 94 struct cfdata *cf; 95 void *auxp; 96 { 97 struct podule_attach_args *pa = (struct podule_attach_args *)auxp; 98 99 /* Look for the card */ 100 101 /* 102 * All Power-tec cards effectively have PowerROMS. Note, 103 * though, that here, if we fail to initialise the loader, we 104 * assume this _is_ the right kind of card. 105 */ 106 if (pa->pa_product == PODULE_ALSYSTEMS_SCSI && 107 (podulebus_initloader(pa) != 0 || 108 podloader_callloader(pa, 0, 0) == PRID_POWERTEC)) 109 return 1; 110 111 return 0; 112 } 113 114 void 115 ptscattach(pdp, dp, auxp) 116 struct device *pdp; 117 struct device *dp; 118 void *auxp; 119 { 120 struct ptsc_softc *sc = (struct ptsc_softc *)dp; 121 struct podule_attach_args *pa; 122 ptsc_regmap_p rp = &sc->sc_regmap; 123 vu_char *fas; 124 125 pa = (struct podule_attach_args *)auxp; 126 127 if (pa->pa_podule_number == -1) 128 panic("Podule has disappeared !"); 129 130 sc->sc_specific.sc_podule_number = pa->pa_podule_number; 131 sc->sc_specific.sc_podule = pa->pa_podule; 132 sc->sc_specific.sc_iobase = 133 (vu_char *)sc->sc_specific.sc_podule->fast_base; 134 135 rp->chipreset = &sc->sc_specific.sc_iobase[PTSC_CONTROL_CHIPRESET]; 136 rp->inten = &sc->sc_specific.sc_iobase[PTSC_CONTROL_INTEN]; 137 rp->status = &sc->sc_specific.sc_iobase[PTSC_STATUS]; 138 rp->term = &sc->sc_specific.sc_iobase[PTSC_CONTROL_TERM]; 139 rp->led = &sc->sc_specific.sc_iobase[PTSC_CONTROL_LED]; 140 fas = &sc->sc_specific.sc_iobase[PTSC_FASOFFSET_BASE]; 141 142 rp->FAS216.sfas_tc_low = &fas[PTSC_FASOFFSET_TCL]; 143 rp->FAS216.sfas_tc_mid = &fas[PTSC_FASOFFSET_TCM]; 144 rp->FAS216.sfas_fifo = &fas[PTSC_FASOFFSET_FIFO]; 145 rp->FAS216.sfas_command = &fas[PTSC_FASOFFSET_COMMAND]; 146 rp->FAS216.sfas_dest_id = &fas[PTSC_FASOFFSET_DESTID]; 147 rp->FAS216.sfas_timeout = &fas[PTSC_FASOFFSET_TIMEOUT]; 148 rp->FAS216.sfas_syncper = &fas[PTSC_FASOFFSET_PERIOD]; 149 rp->FAS216.sfas_syncoff = &fas[PTSC_FASOFFSET_OFFSET]; 150 rp->FAS216.sfas_config1 = &fas[PTSC_FASOFFSET_CONFIG1]; 151 rp->FAS216.sfas_clkconv = &fas[PTSC_FASOFFSET_CLOCKCONV]; 152 rp->FAS216.sfas_test = &fas[PTSC_FASOFFSET_TEST]; 153 rp->FAS216.sfas_config2 = &fas[PTSC_FASOFFSET_CONFIG2]; 154 rp->FAS216.sfas_config3 = &fas[PTSC_FASOFFSET_CONFIG3]; 155 rp->FAS216.sfas_tc_high = &fas[PTSC_FASOFFSET_TCH]; 156 rp->FAS216.sfas_fifo_bot = &fas[PTSC_FASOFFSET_FIFOBOTTOM]; 157 158 sc->sc_softc.sc_fas = (sfas_regmap_p)rp; 159 sc->sc_softc.sc_spec = &sc->sc_specific; 160 161 sc->sc_softc.sc_led = ptsc_led; 162 163 sc->sc_softc.sc_setup_dma = ptsc_setup_dma; 164 sc->sc_softc.sc_build_dma_chain = ptsc_build_dma_chain; 165 sc->sc_softc.sc_need_bump = ptsc_need_bump; 166 167 sc->sc_softc.sc_clock_freq = 40; /* Power-Tec runs at 8MHz */ 168 sc->sc_softc.sc_timeout = 250; /* Set default timeout to 250ms */ 169 sc->sc_softc.sc_config_flags = SFAS_NO_DMA /*| SFAS_NF_DEBUG*/; 170 sc->sc_softc.sc_host_id = 7; /* Should check the jumpers */ 171 172 sc->sc_softc.sc_bump_sz = PAGE_SIZE; 173 sc->sc_softc.sc_bump_pa = 0x0; 174 175 sfasinitialize((struct sfas_softc *)sc); 176 177 sc->sc_softc.sc_adapter.adapt_dev = &sc->sc_softc.sc_dev; 178 sc->sc_softc.sc_adapter.adapt_nchannels = 1; 179 sc->sc_softc.sc_adapter.adapt_openings = 7; 180 sc->sc_softc.sc_adapter.adapt_max_periph = 1; 181 sc->sc_softc.sc_adapter.adapt_ioctl = NULL; 182 sc->sc_softc.sc_adapter.adapt_minphys = sfas_minphys; 183 sc->sc_softc.sc_adapter.adapt_request = sfas_scsi_request; 184 185 sc->sc_softc.sc_channel.chan_adapter = &sc->sc_softc.sc_adapter; 186 sc->sc_softc.sc_channel.chan_bustype = &scsi_bustype; 187 sc->sc_softc.sc_channel.chan_channel = 0; 188 sc->sc_softc.sc_channel.chan_ntargets = 8; 189 sc->sc_softc.sc_channel.chan_nluns = 8; 190 sc->sc_softc.sc_channel.chan_id = sc->sc_softc.sc_host_id; 191 192 /* Provide an override for the host id */ 193 (void)get_bootconf_option(boot_args, "ptsc.hostid", 194 BOOTOPT_TYPE_INT, &sc->sc_softc.sc_channel.chan_id); 195 196 printf(": host=%d", sc->sc_softc.sc_channel.chan_id); 197 198 /* initialise the card */ 199 /* *rp->term = 0;*/ 200 *rp->inten = (PTSC_POLL?0:1); 201 *rp->led = 0; 202 203 #if PTSC_POLL == 0 204 evcnt_attach_dynamic(&sc->sc_softc.sc_intrcnt, EVCNT_TYPE_INTR, NULL, 205 dp->dv_xname, "intr"); 206 sc->sc_softc.sc_ih = podulebus_irq_establish(pa->pa_ih, IPL_BIO, 207 ptsc_intr, &sc->sc_softc, &sc->sc_softc.sc_intrcnt); 208 if (sc->sc_softc.sc_ih == NULL) 209 panic("%s: Cannot install IRQ handler", dp->dv_xname); 210 #else 211 printf(" polling"); 212 sc->sc_softc.sc_adapter.adapt_flags = SCSIPI_ADAPT_POLL_ONLY; 213 #endif 214 215 printf("\n"); 216 217 /* attach all scsi units on us */ 218 config_found(dp, &sc->sc_softc.sc_channel, scsiprint); 219 } 220 221 222 int 223 ptsc_intr(arg) 224 void *arg; 225 { 226 struct sfas_softc *dev = arg; 227 ptsc_regmap_p rp; 228 int quickints; 229 230 rp = (ptsc_regmap_p)dev->sc_fas; 231 232 if (*rp->FAS216.sfas_status & SFAS_STAT_INTERRUPT_PENDING) { 233 quickints = 16; 234 do { 235 dev->sc_status = *rp->FAS216.sfas_status; 236 dev->sc_interrupt = *rp->FAS216.sfas_interrupt; 237 238 if (dev->sc_interrupt & SFAS_INT_RESELECTED) { 239 dev->sc_resel[0] = *rp->FAS216.sfas_fifo; 240 dev->sc_resel[1] = *rp->FAS216.sfas_fifo; 241 } 242 243 sfasintr(dev); 244 245 } while((*rp->FAS216.sfas_status & SFAS_STAT_INTERRUPT_PENDING) 246 && --quickints); 247 } 248 249 return(0); /* Pass interrupt on down the chain */ 250 } 251 252 /* Load transfer address into DMA register */ 253 void 254 ptsc_set_dma_adr(sc, ptr) 255 struct sfas_softc *sc; 256 void *ptr; 257 { 258 #if 0 259 ptsc_regmap_p rp; 260 unsigned int *p; 261 unsigned int d; 262 #endif 263 #if 0 264 printf("ptsc_set_dma_adr(sc = 0x%08x, ptr = 0x%08x)\n", (u_int)sc, (u_int)ptr); 265 #endif 266 return; 267 #if 0 268 rp = (ptsc_regmap_p)sc->sc_fas; 269 270 d = (unsigned int)ptr; 271 p = (unsigned int *)((d & 0xFFFFFF) + (int)rp->dmabase); 272 273 *rp->clear=0; 274 *p = d; 275 #endif 276 } 277 278 /* Set DMA transfer counter */ 279 void 280 ptsc_set_dma_tc(sc, len) 281 struct sfas_softc *sc; 282 unsigned int len; 283 { 284 printf("ptsc_set_dma_tc(sc, len = 0x%08x)", len); 285 286 *sc->sc_fas->sfas_tc_low = len; len >>= 8; 287 *sc->sc_fas->sfas_tc_mid = len; len >>= 8; 288 *sc->sc_fas->sfas_tc_high = len; 289 } 290 291 /* Set DMA mode */ 292 void 293 ptsc_set_dma_mode(sc, mode) 294 struct sfas_softc *sc; 295 int mode; 296 { 297 #if 0 298 struct csc_specific *spec; 299 300 spec = sc->sc_spec; 301 302 spec->portbits = (spec->portbits & ~FLSC_PB_DMA_BITS) | mode; 303 *((flsc_regmap_p)sc->sc_fas)->hardbits = spec->portbits; 304 #endif 305 } 306 307 /* Initialize DMA for transfer */ 308 int 309 ptsc_setup_dma(v, ptr, len, mode) 310 void *v; 311 void *ptr; 312 int len; 313 int mode; 314 { 315 return(0); 316 317 #if 0 318 struct sfas_softc *sc = v; 319 int retval; 320 321 retval = 0; 322 323 printf("ptsc_setup_dma(sc, ptr = 0x%08x, len = 0x%08x, mode = 0x%08x)\n", (u_int)ptr, len, mode); 324 325 switch(mode) { 326 case SFAS_DMA_READ: 327 case SFAS_DMA_WRITE: 328 flsc_set_dma_adr(sc, ptr); 329 if (mode == SFAS_DMA_READ) 330 flsc_set_dma_mode(sc,FLSC_PB_ENABLE_DMA | FLSC_PB_DMA_READ); 331 else 332 flsc_set_dma_mode(sc,FLSC_PB_ENABLE_DMA | FLSC_PB_DMA_WRITE); 333 334 flsc_set_dma_tc(sc, len); 335 break; 336 337 case SFAS_DMA_CLEAR: 338 default: 339 flsc_set_dma_mode(sc, FLSC_PB_DISABLE_DMA); 340 flsc_set_dma_adr(sc, 0); 341 342 retval = (*sc->sc_fas->sfas_tc_high << 16) | 343 (*sc->sc_fas->sfas_tc_mid << 8) | 344 *sc->sc_fas->sfas_tc_low; 345 346 flsc_set_dma_tc(sc, 0); 347 break; 348 } 349 350 return(retval); 351 #endif 352 } 353 354 /* Check if address and len is ok for DMA transfer */ 355 int 356 ptsc_need_bump(v, ptr, len) 357 void *v; 358 void *ptr; 359 int len; 360 { 361 int p; 362 363 p = (int)ptr & 0x03; 364 365 if (p) { 366 p = 4-p; 367 368 if (len < 256) 369 p = len; 370 } 371 372 return(p); 373 } 374 375 /* Interrupt driven routines */ 376 int 377 ptsc_build_dma_chain(void *v1, void *v2, void *p, int l) 378 { 379 #if 0 380 vm_offset_t pa, lastpa; 381 char *ptr; 382 int len, prelen, postlen, max_t, n; 383 #endif 384 #if 0 385 printf("ptsc_build_dma_chain()\n"); 386 #endif 387 return(0); 388 389 #if 0 390 if (l == 0) 391 return(0); 392 393 #define set_link(n, p, l, f)\ 394 do { chain[n].ptr = (p); chain[n].len = (l); chain[n++].flg = (f); } while(0) 395 396 n = 0; 397 398 if (l < 512) 399 set_link(n, (vm_offset_t)p, l, SFAS_CHAIN_BUMP); 400 else if (p >= (void *)0xFF000000) { 401 while(l != 0) { 402 len = ((l > sc->sc_bump_sz) ? sc->sc_bump_sz : l); 403 404 set_link(n, (vm_offset_t)p, len, SFAS_CHAIN_BUMP); 405 406 p += len; 407 l -= len; 408 } 409 } else { 410 ptr = p; 411 len = l; 412 413 pa = kvtop(ptr); 414 prelen = ((int)ptr & 0x03); 415 416 if (prelen) { 417 prelen = 4-prelen; 418 set_link(n, (vm_offset_t)ptr, prelen, SFAS_CHAIN_BUMP); 419 ptr += prelen; 420 len -= prelen; 421 } 422 423 lastpa = 0; 424 while(len > 3) { 425 pa = kvtop(ptr); 426 max_t = PAGE_SIZE - (pa & PGOFSET); 427 if (max_t > len) 428 max_t = len; 429 430 max_t &= ~3; 431 432 if (lastpa == pa) 433 sc->sc_chain[n-1].len += max_t; 434 else 435 set_link(n, pa, max_t, SFAS_CHAIN_DMA); 436 437 lastpa = pa+max_t; 438 439 ptr += max_t; 440 len -= max_t; 441 } 442 443 if (len) 444 set_link(n, (vm_offset_t)ptr, len, SFAS_CHAIN_BUMP); 445 } 446 447 return(n); 448 #endif 449 } 450 451 /* Turn on/off led */ 452 void 453 ptsc_led(void *v, int mode) 454 { 455 struct sfas_softc *sc = v; 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