ptsc.c revision 1.10
1 /* $NetBSD: ptsc.c,v 1.10 2003/05/03 18:10:41 wiz 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 53 #include <uvm/uvm_extern.h> 54 55 #include <dev/scsipi/scsi_all.h> 56 #include <dev/scsipi/scsipi_all.h> 57 #include <dev/scsipi/scsiconf.h> 58 #include <machine/io.h> 59 #include <machine/intr.h> 60 #include <machine/bootconfig.h> 61 #include <acorn32/podulebus/podulebus.h> 62 #include <acorn32/podulebus/sfasreg.h> 63 #include <acorn32/podulebus/sfasvar.h> 64 #include <acorn32/podulebus/ptscreg.h> 65 #include <acorn32/podulebus/ptscvar.h> 66 #include <dev/podulebus/podules.h> 67 #include <dev/podulebus/powerromreg.h> 68 69 int ptscmatch __P((struct device *, struct cfdata *, void *)); 70 void ptscattach __P((struct device *, struct device *, void *)); 71 72 CFATTACH_DECL(ptsc, sizeof(struct ptsc_softc), 73 ptscmatch, ptscattach, NULL, NULL); 74 75 int ptsc_intr(void *); 76 int ptsc_setup_dma(void *, void *, int, int); 77 int ptsc_build_dma_chain(void *, void *, void *, int); 78 int ptsc_need_bump(void *, void *, int); 79 void ptsc_led(void *, int); 80 81 void ptsc_set_dma_adr(struct sfas_softc *, void *); 82 void ptsc_set_dma_tc(struct sfas_softc *, unsigned int); 83 void ptsc_set_dma_mode(struct sfas_softc *, int); 84 85 /* 86 * if we are a Power-tec SCSI-2 card 87 */ 88 int 89 ptscmatch(pdp, cf, auxp) 90 struct device *pdp; 91 struct cfdata *cf; 92 void *auxp; 93 { 94 struct podule_attach_args *pa = (struct podule_attach_args *)auxp; 95 96 /* Look for the card */ 97 98 /* 99 * All Power-tec cards effectively have PowerROMS. Note, 100 * though, that here, if we fail to initialise the loader, we 101 * assume this _is_ the right kind of card. 102 */ 103 if (pa->pa_product == PODULE_ALSYSTEMS_SCSI && 104 (podulebus_initloader(pa) != 0 || 105 podloader_callloader(pa, 0, 0) == PRID_POWERTEC)) 106 return 1; 107 108 return 0; 109 } 110 111 void 112 ptscattach(pdp, dp, auxp) 113 struct device *pdp; 114 struct device *dp; 115 void *auxp; 116 { 117 struct ptsc_softc *sc = (struct ptsc_softc *)dp; 118 struct podule_attach_args *pa; 119 ptsc_regmap_p rp = &sc->sc_regmap; 120 vu_char *fas; 121 122 pa = (struct podule_attach_args *)auxp; 123 124 if (pa->pa_podule_number == -1) 125 panic("Podule has disappeared !"); 126 127 sc->sc_specific.sc_podule_number = pa->pa_podule_number; 128 sc->sc_specific.sc_podule = pa->pa_podule; 129 sc->sc_specific.sc_iobase = 130 (vu_char *)sc->sc_specific.sc_podule->fast_base; 131 132 rp->chipreset = &sc->sc_specific.sc_iobase[PTSC_CONTROL_CHIPRESET]; 133 rp->inten = &sc->sc_specific.sc_iobase[PTSC_CONTROL_INTEN]; 134 rp->status = &sc->sc_specific.sc_iobase[PTSC_STATUS]; 135 rp->term = &sc->sc_specific.sc_iobase[PTSC_CONTROL_TERM]; 136 rp->led = &sc->sc_specific.sc_iobase[PTSC_CONTROL_LED]; 137 fas = &sc->sc_specific.sc_iobase[PTSC_FASOFFSET_BASE]; 138 139 rp->FAS216.sfas_tc_low = &fas[PTSC_FASOFFSET_TCL]; 140 rp->FAS216.sfas_tc_mid = &fas[PTSC_FASOFFSET_TCM]; 141 rp->FAS216.sfas_fifo = &fas[PTSC_FASOFFSET_FIFO]; 142 rp->FAS216.sfas_command = &fas[PTSC_FASOFFSET_COMMAND]; 143 rp->FAS216.sfas_dest_id = &fas[PTSC_FASOFFSET_DESTID]; 144 rp->FAS216.sfas_timeout = &fas[PTSC_FASOFFSET_TIMEOUT]; 145 rp->FAS216.sfas_syncper = &fas[PTSC_FASOFFSET_PERIOD]; 146 rp->FAS216.sfas_syncoff = &fas[PTSC_FASOFFSET_OFFSET]; 147 rp->FAS216.sfas_config1 = &fas[PTSC_FASOFFSET_CONFIG1]; 148 rp->FAS216.sfas_clkconv = &fas[PTSC_FASOFFSET_CLOCKCONV]; 149 rp->FAS216.sfas_test = &fas[PTSC_FASOFFSET_TEST]; 150 rp->FAS216.sfas_config2 = &fas[PTSC_FASOFFSET_CONFIG2]; 151 rp->FAS216.sfas_config3 = &fas[PTSC_FASOFFSET_CONFIG3]; 152 rp->FAS216.sfas_tc_high = &fas[PTSC_FASOFFSET_TCH]; 153 rp->FAS216.sfas_fifo_bot = &fas[PTSC_FASOFFSET_FIFOBOTTOM]; 154 155 sc->sc_softc.sc_fas = (sfas_regmap_p)rp; 156 sc->sc_softc.sc_spec = &sc->sc_specific; 157 158 sc->sc_softc.sc_led = ptsc_led; 159 160 sc->sc_softc.sc_setup_dma = ptsc_setup_dma; 161 sc->sc_softc.sc_build_dma_chain = ptsc_build_dma_chain; 162 sc->sc_softc.sc_need_bump = ptsc_need_bump; 163 164 sc->sc_softc.sc_clock_freq = 40; /* Power-Tec runs at 8MHz */ 165 sc->sc_softc.sc_timeout = 250; /* Set default timeout to 250ms */ 166 sc->sc_softc.sc_config_flags = SFAS_NO_DMA /*| SFAS_NF_DEBUG*/; 167 sc->sc_softc.sc_host_id = 7; /* Should check the jumpers */ 168 169 sc->sc_softc.sc_bump_sz = PAGE_SIZE; 170 sc->sc_softc.sc_bump_pa = 0x0; 171 172 sfasinitialize((struct sfas_softc *)sc); 173 174 sc->sc_softc.sc_adapter.adapt_dev = &sc->sc_softc.sc_dev; 175 sc->sc_softc.sc_adapter.adapt_nchannels = 1; 176 sc->sc_softc.sc_adapter.adapt_openings = 7; 177 sc->sc_softc.sc_adapter.adapt_max_periph = 1; 178 sc->sc_softc.sc_adapter.adapt_ioctl = NULL; 179 sc->sc_softc.sc_adapter.adapt_minphys = sfas_minphys; 180 sc->sc_softc.sc_adapter.adapt_request = sfas_scsi_request; 181 182 sc->sc_softc.sc_channel.chan_adapter = &sc->sc_softc.sc_adapter; 183 sc->sc_softc.sc_channel.chan_bustype = &scsi_bustype; 184 sc->sc_softc.sc_channel.chan_channel = 0; 185 sc->sc_softc.sc_channel.chan_ntargets = 8; 186 sc->sc_softc.sc_channel.chan_nluns = 8; 187 sc->sc_softc.sc_channel.chan_id = sc->sc_softc.sc_host_id; 188 189 /* Provide an override for the host id */ 190 (void)get_bootconf_option(boot_args, "ptsc.hostid", 191 BOOTOPT_TYPE_INT, &sc->sc_softc.sc_channel.chan_id); 192 193 printf(": host=%d", sc->sc_softc.sc_channel.chan_id); 194 195 /* initialise the card */ 196 /* *rp->term = 0;*/ 197 *rp->inten = (PTSC_POLL?0:1); 198 *rp->led = 0; 199 200 #if PTSC_POLL == 0 201 evcnt_attach_dynamic(&sc->sc_softc.sc_intrcnt, EVCNT_TYPE_INTR, NULL, 202 dp->dv_xname, "intr"); 203 sc->sc_softc.sc_ih = podulebus_irq_establish(pa->pa_ih, IPL_BIO, 204 ptsc_intr, &sc->sc_softc, &sc->sc_softc.sc_intrcnt); 205 if (sc->sc_softc.sc_ih == NULL) 206 panic("%s: Cannot install IRQ handler", dp->dv_xname); 207 #else 208 printf(" polling"); 209 sc->sc_softc.sc_adapter.adapt_flags = SCSIPI_ADAPT_POLL_ONLY; 210 #endif 211 212 printf("\n"); 213 214 /* attach all scsi units on us */ 215 config_found(dp, &sc->sc_softc.sc_channel, scsiprint); 216 } 217 218 219 int 220 ptsc_intr(arg) 221 void *arg; 222 { 223 struct sfas_softc *dev = arg; 224 ptsc_regmap_p rp; 225 int quickints; 226 227 rp = (ptsc_regmap_p)dev->sc_fas; 228 229 if (*rp->FAS216.sfas_status & SFAS_STAT_INTERRUPT_PENDING) { 230 quickints = 16; 231 do { 232 dev->sc_status = *rp->FAS216.sfas_status; 233 dev->sc_interrupt = *rp->FAS216.sfas_interrupt; 234 235 if (dev->sc_interrupt & SFAS_INT_RESELECTED) { 236 dev->sc_resel[0] = *rp->FAS216.sfas_fifo; 237 dev->sc_resel[1] = *rp->FAS216.sfas_fifo; 238 } 239 240 sfasintr(dev); 241 242 } while((*rp->FAS216.sfas_status & SFAS_STAT_INTERRUPT_PENDING) 243 && --quickints); 244 } 245 246 return(0); /* Pass interrupt on down the chain */ 247 } 248 249 /* Load transfer address into DMA register */ 250 void 251 ptsc_set_dma_adr(sc, ptr) 252 struct sfas_softc *sc; 253 void *ptr; 254 { 255 #if 0 256 ptsc_regmap_p rp; 257 unsigned int *p; 258 unsigned int d; 259 #endif 260 #if 0 261 printf("ptsc_set_dma_adr(sc = 0x%08x, ptr = 0x%08x)\n", (u_int)sc, (u_int)ptr); 262 #endif 263 return; 264 #if 0 265 rp = (ptsc_regmap_p)sc->sc_fas; 266 267 d = (unsigned int)ptr; 268 p = (unsigned int *)((d & 0xFFFFFF) + (int)rp->dmabase); 269 270 *rp->clear=0; 271 *p = d; 272 #endif 273 } 274 275 /* Set DMA transfer counter */ 276 void 277 ptsc_set_dma_tc(sc, len) 278 struct sfas_softc *sc; 279 unsigned int len; 280 { 281 printf("ptsc_set_dma_tc(sc, len = 0x%08x)", len); 282 283 *sc->sc_fas->sfas_tc_low = len; len >>= 8; 284 *sc->sc_fas->sfas_tc_mid = len; len >>= 8; 285 *sc->sc_fas->sfas_tc_high = len; 286 } 287 288 /* Set DMA mode */ 289 void 290 ptsc_set_dma_mode(sc, mode) 291 struct sfas_softc *sc; 292 int mode; 293 { 294 #if 0 295 struct csc_specific *spec; 296 297 spec = sc->sc_spec; 298 299 spec->portbits = (spec->portbits & ~FLSC_PB_DMA_BITS) | mode; 300 *((flsc_regmap_p)sc->sc_fas)->hardbits = spec->portbits; 301 #endif 302 } 303 304 /* Initialize DMA for transfer */ 305 int 306 ptsc_setup_dma(v, ptr, len, mode) 307 void *v; 308 void *ptr; 309 int len; 310 int mode; 311 { 312 return(0); 313 314 #if 0 315 struct sfas_softc *sc = v; 316 int retval; 317 318 retval = 0; 319 320 printf("ptsc_setup_dma(sc, ptr = 0x%08x, len = 0x%08x, mode = 0x%08x)\n", (u_int)ptr, len, mode); 321 322 switch(mode) { 323 case SFAS_DMA_READ: 324 case SFAS_DMA_WRITE: 325 flsc_set_dma_adr(sc, ptr); 326 if (mode == SFAS_DMA_READ) 327 flsc_set_dma_mode(sc,FLSC_PB_ENABLE_DMA | FLSC_PB_DMA_READ); 328 else 329 flsc_set_dma_mode(sc,FLSC_PB_ENABLE_DMA | FLSC_PB_DMA_WRITE); 330 331 flsc_set_dma_tc(sc, len); 332 break; 333 334 case SFAS_DMA_CLEAR: 335 default: 336 flsc_set_dma_mode(sc, FLSC_PB_DISABLE_DMA); 337 flsc_set_dma_adr(sc, 0); 338 339 retval = (*sc->sc_fas->sfas_tc_high << 16) | 340 (*sc->sc_fas->sfas_tc_mid << 8) | 341 *sc->sc_fas->sfas_tc_low; 342 343 flsc_set_dma_tc(sc, 0); 344 break; 345 } 346 347 return(retval); 348 #endif 349 } 350 351 /* Check if address and len is ok for DMA transfer */ 352 int 353 ptsc_need_bump(v, ptr, len) 354 void *v; 355 void *ptr; 356 int len; 357 { 358 int p; 359 360 p = (int)ptr & 0x03; 361 362 if (p) { 363 p = 4-p; 364 365 if (len < 256) 366 p = len; 367 } 368 369 return(p); 370 } 371 372 /* Interrupt driven routines */ 373 int 374 ptsc_build_dma_chain(void *v1, void *v2, void *p, int l) 375 { 376 #if 0 377 vm_offset_t pa, lastpa; 378 char *ptr; 379 int len, prelen, postlen, max_t, n; 380 #endif 381 #if 0 382 printf("ptsc_build_dma_chain()\n"); 383 #endif 384 return(0); 385 386 #if 0 387 if (l == 0) 388 return(0); 389 390 #define set_link(n, p, l, f)\ 391 do { chain[n].ptr = (p); chain[n].len = (l); chain[n++].flg = (f); } while(0) 392 393 n = 0; 394 395 if (l < 512) 396 set_link(n, (vm_offset_t)p, l, SFAS_CHAIN_BUMP); 397 else if (p >= (void *)0xFF000000) { 398 while(l != 0) { 399 len = ((l > sc->sc_bump_sz) ? sc->sc_bump_sz : l); 400 401 set_link(n, (vm_offset_t)p, len, SFAS_CHAIN_BUMP); 402 403 p += len; 404 l -= len; 405 } 406 } else { 407 ptr = p; 408 len = l; 409 410 pa = kvtop(ptr); 411 prelen = ((int)ptr & 0x03); 412 413 if (prelen) { 414 prelen = 4-prelen; 415 set_link(n, (vm_offset_t)ptr, prelen, SFAS_CHAIN_BUMP); 416 ptr += prelen; 417 len -= prelen; 418 } 419 420 lastpa = 0; 421 while(len > 3) { 422 pa = kvtop(ptr); 423 max_t = PAGE_SIZE - (pa & PGOFSET); 424 if (max_t > len) 425 max_t = len; 426 427 max_t &= ~3; 428 429 if (lastpa == pa) 430 sc->sc_chain[n-1].len += max_t; 431 else 432 set_link(n, pa, max_t, SFAS_CHAIN_DMA); 433 434 lastpa = pa+max_t; 435 436 ptr += max_t; 437 len -= max_t; 438 } 439 440 if (len) 441 set_link(n, (vm_offset_t)ptr, len, SFAS_CHAIN_BUMP); 442 } 443 444 return(n); 445 #endif 446 } 447 448 /* Turn on/off led */ 449 void 450 ptsc_led(void *v, int mode) 451 { 452 struct sfas_softc *sc = v; 453 ptsc_regmap_p rp; 454 455 rp = (ptsc_regmap_p)sc->sc_fas; 456 457 if (mode) { 458 sc->sc_led_status++; 459 } else { 460 if (sc->sc_led_status) 461 sc->sc_led_status--; 462 } 463 *rp->led = (sc->sc_led_status?1:0); 464 } 465
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