cosc.c revision 1.11
1 /* $NetBSD: cosc.c,v 1.11 2003/04/01 02:13:53 thorpej Exp $ */ 2 3 /* 4 * Copyright (c) 1996 Mark Brinicombe 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. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by Mark Brinicombe 18 * for the NetBSD Project. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 24 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 25 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 26 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 27 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 28 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 29 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 30 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 31 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 32 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 33 * 34 * from: asc.c,v 1.8 1996/06/12 20:46:58 mark Exp 35 */ 36 37 /* 38 * Driver for the MCS Connect 32 SCSI 2 card with AM53C94 SCSI controller. 39 * 40 * Thanks to Mike <mcsmike (at) knipp.de> at MCS for loaning a card. 41 * Thanks to Andreas Gandor <andi (at) knipp.de> for some technical information 42 */ 43 44 #include <sys/param.h> 45 #include <sys/systm.h> 46 #include <sys/kernel.h> 47 #include <sys/device.h> 48 49 #include <uvm/uvm_extern.h> 50 51 #include <dev/scsipi/scsi_all.h> 52 #include <dev/scsipi/scsipi_all.h> 53 #include <dev/scsipi/scsiconf.h> 54 #include <machine/bootconfig.h> 55 #include <machine/io.h> 56 #include <machine/intr.h> 57 #include <arm/arm32/katelib.h> 58 #include <acorn32/podulebus/podulebus.h> 59 #include <acorn32/podulebus/escreg.h> 60 #include <acorn32/podulebus/escvar.h> 61 #include <acorn32/podulebus/coscreg.h> 62 #include <acorn32/podulebus/coscvar.h> 63 #include <dev/podulebus/podules.h> 64 65 void coscattach(struct device *, struct device *, void *); 66 int coscmatch(struct device *, struct cfdata *, void *); 67 68 CFATTACH_DECL(cosc, sizeof(struct cosc_softc), 69 coscmatch, coscattach, NULL, NULL); 70 71 int cosc_intr(void *); 72 int cosc_setup_dma(struct esc_softc *, void *, int, int); 73 int cosc_build_dma_chain(struct esc_softc *, struct esc_dma_chain *, void *, 74 int); 75 int cosc_need_bump(struct esc_softc *, void *, int); 76 void cosc_led(struct esc_softc *, int); 77 void cosc_set_dma_adr(struct esc_softc *, void *); 78 void cosc_set_dma_tc(struct esc_softc *, unsigned int); 79 void cosc_set_dma_mode(struct esc_softc *, int); 80 81 #if COSC_POLL > 0 82 int cosc_poll = 1; 83 #endif 84 85 int 86 coscmatch(pdp, cf, auxp) 87 struct device *pdp; 88 struct cfdata *cf; 89 void *auxp; 90 { 91 struct podule_attach_args *pa = (struct podule_attach_args *)auxp; 92 93 /* Look for the card */ 94 95 if (pa->pa_product == PODULE_CONNECT32) 96 return(1); 97 98 /* Old versions of the ROM on this card could have the wrong ID */ 99 100 if (pa ->pa_product == PODULE_ACORN_SCSI && 101 strncmp(pa->pa_podule->description, "MCS", 3) == 0) 102 return(1); 103 return(0); 104 } 105 106 static int dummy[6]; 107 108 void 109 coscattach(pdp, dp, auxp) 110 struct device *pdp, *dp; 111 void *auxp; 112 { 113 struct cosc_softc *sc = (struct cosc_softc *)dp; 114 struct podule_attach_args *pa; 115 cosc_regmap_p rp = &sc->sc_regmap; 116 vu_char *esc; 117 118 pa = (struct podule_attach_args *)auxp; 119 120 if (pa->pa_podule_number == -1) 121 panic("Podule has disappeared !"); 122 123 sc->sc_podule_number = pa->pa_podule_number; 124 sc->sc_podule = pa->pa_podule; 125 podules[sc->sc_podule_number].attached = 1; 126 127 printf(":"); 128 129 if (pa->pa_podule->manufacturer == MANUFACTURER_ACORN 130 && pa->pa_podule->product == PODULE_ACORN_SCSI) 131 printf(" Faulty expansion card identity\n"); 132 133 sc->sc_iobase = (vu_char *)sc->sc_podule->fast_base; 134 135 /* Select page zero (so we can see the config info) */ 136 137 sc->sc_iobase[COSC_PAGE_REGISTER] = 0; 138 139 rp->chipreset = (vu_char *)&dummy[0]; 140 rp->inten = (vu_char *)&dummy[1]; 141 rp->status = (vu_char *)&dummy[2]; 142 rp->term = &sc->sc_iobase[COSC_TERMINATION_CONTROL]; 143 rp->led = (vu_char *)&dummy[4]; 144 esc = &sc->sc_iobase[COSC_ESCOFFSET_BASE]; 145 146 rp->esc.esc_tc_low = &esc[COSC_ESCOFFSET_TCL]; 147 rp->esc.esc_tc_mid = &esc[COSC_ESCOFFSET_TCM]; 148 rp->esc.esc_fifo = &esc[COSC_ESCOFFSET_FIFO]; 149 rp->esc.esc_command = &esc[COSC_ESCOFFSET_COMMAND]; 150 rp->esc.esc_dest_id = &esc[COSC_ESCOFFSET_DESTID]; 151 rp->esc.esc_timeout = &esc[COSC_ESCOFFSET_TIMEOUT]; 152 rp->esc.esc_syncper = &esc[COSC_ESCOFFSET_PERIOD]; 153 rp->esc.esc_syncoff = &esc[COSC_ESCOFFSET_OFFSET]; 154 rp->esc.esc_config1 = &esc[COSC_ESCOFFSET_CONFIG1]; 155 rp->esc.esc_clkconv = &esc[COSC_ESCOFFSET_CLOCKCONV]; 156 rp->esc.esc_test = &esc[COSC_ESCOFFSET_TEST]; 157 rp->esc.esc_config2 = &esc[COSC_ESCOFFSET_CONFIG2]; 158 rp->esc.esc_config3 = &esc[COSC_ESCOFFSET_CONFIG3]; 159 rp->esc.esc_config4 = &esc[COSC_ESCOFFSET_CONFIG4]; 160 rp->esc.esc_tc_high = &esc[COSC_ESCOFFSET_TCH]; 161 rp->esc.esc_fifo_bot = &esc[COSC_ESCOFFSET_FIFOBOTTOM]; 162 163 *rp->esc.esc_command = ESC_CMD_RESET_CHIP; 164 delay(1000); 165 *rp->esc.esc_command = ESC_CMD_NOP; 166 167 /* See if we recognise the controller */ 168 169 switch (*rp->esc.esc_tc_high) { 170 case 0x12: 171 printf(" AM53CF94"); 172 break; 173 default: 174 printf(" Unknown controller (%02x)", *rp->esc.esc_tc_high); 175 break; 176 } 177 178 /* Set termination power */ 179 180 if (sc->sc_iobase[COSC_CONFIG_TERMINATION] & COSC_CONFIG_TERMINATION_ON) { 181 printf(" termpwr on"); 182 sc->sc_iobase[COSC_TERMINATION_CONTROL] = COSC_TERMINATION_ON; 183 } else { 184 printf(" termpwr off"); 185 sc->sc_iobase[COSC_TERMINATION_CONTROL] = COSC_TERMINATION_OFF; 186 } 187 188 /* Don't know what this is for */ 189 190 { 191 int byte; 192 int loop; 193 194 byte = sc->sc_iobase[COSC_REGISTER_01]; 195 byte = 0; 196 for (loop = 0; loop < 8; ++loop) { 197 if (sc->sc_iobase[COSC_REGISTER_00] & 0x01) 198 byte |= (1 << loop); 199 } 200 printf(" byte=%02x", byte); 201 } 202 203 /* 204 * Control register 4 is an AMD special (not on FAS216) 205 * 206 * The powerdown and glitch eater facilities could be useful 207 * Use the podule configuration for this register 208 */ 209 210 sc->sc_softc.sc_config4 = sc->sc_iobase[COSC_CONFIG_CONTROL_REG4]; 211 212 sc->sc_softc.sc_esc = (esc_regmap_p)rp; 213 /* sc->sc_softc.sc_spec = &sc->sc_specific;*/ 214 215 sc->sc_softc.sc_led = cosc_led; 216 sc->sc_softc.sc_setup_dma = cosc_setup_dma; 217 sc->sc_softc.sc_build_dma_chain = cosc_build_dma_chain; 218 sc->sc_softc.sc_need_bump = cosc_need_bump; 219 220 sc->sc_softc.sc_clock_freq = 40; /* Connect32 runs at 40MHz */ 221 sc->sc_softc.sc_timeout = 250; /* Set default timeout to 250ms */ 222 sc->sc_softc.sc_config_flags = ESC_NO_DMA; 223 sc->sc_softc.sc_host_id = sc->sc_iobase[COSC_CONFIG_CONTROL_REG1] & ESC_DEST_ID_MASK; 224 225 printf(" hostid=%d", sc->sc_softc.sc_host_id); 226 227 #if COSC_POLL > 0 228 if (boot_args) 229 get_bootconf_option(boot_args, "coscpoll", 230 BOOTOPT_TYPE_BOOLEAN, &cosc_poll); 231 232 if (cosc_poll) { 233 printf(" polling"); 234 sc->sc_softc.sc_adapter.adapt_flags |= SCSIPI_ADAPT_POLL_ONLY; 235 } 236 #endif 237 238 sc->sc_softc.sc_bump_sz = PAGE_SIZE; 239 sc->sc_softc.sc_bump_pa = 0x0; 240 241 escinitialize((struct esc_softc *)sc); 242 243 sc->sc_softc.sc_adapter.adapt_dev = &sc->sc_softc.sc_dev; 244 sc->sc_softc.sc_adapter.adapt_nchannels = 1; 245 sc->sc_softc.sc_adapter.adapt_openings = 7; 246 sc->sc_softc.sc_adapter.adapt_max_periph = 1; 247 sc->sc_softc.sc_adapter.adapt_ioctl = NULL; 248 sc->sc_softc.sc_adapter.adapt_minphys = esc_minphys; 249 sc->sc_softc.sc_adapter.adapt_request = esc_scsi_request; 250 251 sc->sc_softc.sc_channel.chan_adapter = &sc->sc_softc.sc_adapter; 252 sc->sc_softc.sc_channel.chan_bustype = &scsi_bustype; 253 sc->sc_softc.sc_channel.chan_channel = 0; 254 sc->sc_softc.sc_channel.chan_ntargets = 8; 255 sc->sc_softc.sc_channel.chan_nluns = 8; 256 sc->sc_softc.sc_channel.chan_id = sc->sc_softc.sc_host_id; 257 258 /* initialise the card */ 259 #if 0 260 *rp->inten = (COSC_POLL?0:1); 261 *rp->led = 0; 262 #endif 263 264 sc->sc_softc.sc_ih.ih_func = cosc_intr; 265 sc->sc_softc.sc_ih.ih_arg = &sc->sc_softc; 266 sc->sc_softc.sc_ih.ih_level = IPL_BIO; 267 sc->sc_softc.sc_ih.ih_name = "scsi: cosc"; 268 sc->sc_softc.sc_ih.ih_maskaddr = sc->sc_podule->irq_addr; 269 sc->sc_softc.sc_ih.ih_maskbits = sc->sc_podule->irq_mask; 270 271 #if COSC_POLL > 0 272 if (!cosc_poll) 273 #endif 274 { 275 evcnt_attach_dynamic(&sc->sc_intrcnt, EVCNT_TYPE_INTR, NULL, 276 dp->dv_xname, "intr"); 277 sc->sc_ih = podulebus_irq_establish(pa->pa_ih, IPL_BIO, 278 cosc_intr, sc, &sc->sc_intrcnt); 279 if (sc->sc_ih == NULL) 280 panic("%s: Cannot install IRQ handler", 281 dp->dv_xname); 282 } 283 284 printf("\n"); 285 286 /* attach all scsi units on us */ 287 config_found(dp, &sc->sc_softc.sc_channel, scsiprint); 288 } 289 290 291 /* Turn on/off led */ 292 293 void 294 cosc_led(sc, mode) 295 struct esc_softc *sc; 296 int mode; 297 { 298 cosc_regmap_p rp; 299 300 rp = (cosc_regmap_p)sc->sc_esc; 301 302 if (mode) { 303 sc->sc_led_status++; 304 } else { 305 if (sc->sc_led_status) 306 sc->sc_led_status--; 307 } 308 /* *rp->led = (sc->sc_led_status?1:0);*/ 309 } 310 311 312 int 313 cosc_intr(arg) 314 void *arg; 315 { 316 struct esc_softc *dev = arg; 317 cosc_regmap_p rp; 318 int quickints; 319 320 rp = (cosc_regmap_p)dev->sc_esc; 321 322 printf("cosc_intr:%08x %02x\n", (u_int)rp->esc.esc_status, *rp->esc.esc_status); 323 324 if (*rp->esc.esc_status & ESC_STAT_INTERRUPT_PENDING) { 325 quickints = 16; 326 do { 327 dev->sc_status = *rp->esc.esc_status; 328 dev->sc_interrupt = *rp->esc.esc_interrupt; 329 330 if (dev->sc_interrupt & ESC_INT_RESELECTED) { 331 dev->sc_resel[0] = *rp->esc.esc_fifo; 332 dev->sc_resel[1] = *rp->esc.esc_fifo; 333 } 334 335 escintr(dev); 336 337 } while((*rp->esc.esc_status & ESC_STAT_INTERRUPT_PENDING) 338 && --quickints); 339 } 340 341 return(0); /* Pass interrupt on down the chain */ 342 } 343 344 345 /* Load transfer address into dma register */ 346 347 void 348 cosc_set_dma_adr(sc, ptr) 349 struct esc_softc *sc; 350 void *ptr; 351 { 352 printf("cosc_set_dma_adr(sc = 0x%08x, ptr = 0x%08x)\n", (u_int)sc, (u_int)ptr); 353 return; 354 } 355 356 357 /* Set DMA transfer counter */ 358 359 void 360 cosc_set_dma_tc(sc, len) 361 struct esc_softc *sc; 362 unsigned int len; 363 { 364 printf("cosc_set_dma_tc(sc, len = 0x%08x)", len); 365 366 /* Set the transfer size on the SCSI controller */ 367 368 *sc->sc_esc->esc_tc_low = len; len >>= 8; 369 *sc->sc_esc->esc_tc_mid = len; len >>= 8; 370 *sc->sc_esc->esc_tc_high = len; 371 } 372 373 374 /* Set DMA mode */ 375 376 void 377 cosc_set_dma_mode(sc, mode) 378 struct esc_softc *sc; 379 int mode; 380 { 381 printf("cosc_set_dma_mode(sc, mode = %d)", mode); 382 } 383 384 385 /* Initialize DMA for transfer */ 386 387 int 388 cosc_setup_dma(sc, ptr, len, mode) 389 struct esc_softc *sc; 390 void *ptr; 391 int len; 392 int mode; 393 { 394 /* printf("cosc_setup_dma(sc, ptr = 0x%08x, len = 0x%08x, mode = 0x%08x)\n", (u_int)ptr, len, mode);*/ 395 return(0); 396 397 } 398 399 400 /* Check if address and len is ok for DMA transfer */ 401 402 int 403 cosc_need_bump(sc, ptr, len) 404 struct esc_softc *sc; 405 void *ptr; 406 int len; 407 { 408 int p; 409 410 p = (int)ptr & 0x03; 411 412 if (p) { 413 p = 4-p; 414 415 if (len < 256) 416 p = len; 417 } 418 419 return(p); 420 } 421 422 423 /* Interrupt driven routines */ 424 425 int 426 cosc_build_dma_chain(sc, chain, p, l) 427 struct esc_softc *sc; 428 struct esc_dma_chain *chain; 429 void *p; 430 int l; 431 { 432 printf("cosc_build_dma_chain()\n"); 433 return(0); 434 } 435
Indexes created Thu Oct 02 10:09:58 GMT 2025