cosc.c revision 1.5
1 /* $NetBSD: cosc.c,v 1.5 2002/08/05 23:30:05 bjh21 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 #include <dev/scsipi/scsi_all.h> 49 #include <dev/scsipi/scsipi_all.h> 50 #include <dev/scsipi/scsiconf.h> 51 #include <machine/bootconfig.h> 52 #include <machine/io.h> 53 #include <machine/intr.h> 54 #include <arm/arm32/katelib.h> 55 #include <acorn32/podulebus/podulebus.h> 56 #include <acorn32/podulebus/escreg.h> 57 #include <acorn32/podulebus/escvar.h> 58 #include <acorn32/podulebus/coscreg.h> 59 #include <acorn32/podulebus/coscvar.h> 60 #include <dev/podulebus/podules.h> 61 62 void coscattach __P((struct device *, struct device *, void *)); 63 int coscmatch __P((struct device *, struct cfdata *, void *)); 64 65 struct cfattach cosc_ca = { 66 sizeof(struct cosc_softc), coscmatch, coscattach 67 }; 68 69 int cosc_intr __P((void *arg)); 70 int cosc_setup_dma __P((struct esc_softc *sc, void *ptr, int len, 71 int mode)); 72 int cosc_build_dma_chain __P((struct esc_softc *sc, 73 struct esc_dma_chain *chain, void *p, int l)); 74 int cosc_need_bump __P((struct esc_softc *sc, void *ptr, int len)); 75 76 void cosc_led __P((struct esc_softc *sc, int mode)); 77 78 #if COSC_POLL > 0 79 int cosc_poll = 1; 80 #endif 81 82 83 int 84 coscmatch(pdp, cf, auxp) 85 struct device *pdp; 86 struct cfdata *cf; 87 void *auxp; 88 { 89 struct podule_attach_args *pa = (struct podule_attach_args *)auxp; 90 91 /* Look for the card */ 92 93 if (pa->pa_product == PODULE_CONNECT32) 94 return(1); 95 96 /* Old versions of the ROM on this card could have the wrong ID */ 97 98 if (pa ->pa_product == PODULE_ACORN_SCSI && 99 strncmp(pa->pa_podule->description, "MCS", 3) == 0) 100 return(1); 101 return(0); 102 } 103 104 static int dummy[6]; 105 106 void 107 coscattach(pdp, dp, auxp) 108 struct device *pdp, *dp; 109 void *auxp; 110 { 111 struct cosc_softc *sc = (struct cosc_softc *)dp; 112 struct podule_attach_args *pa; 113 cosc_regmap_p rp = &sc->sc_regmap; 114 vu_char *esc; 115 116 pa = (struct podule_attach_args *)auxp; 117 118 if (pa->pa_podule_number == -1) 119 panic("Podule has disappeared !"); 120 121 sc->sc_podule_number = pa->pa_podule_number; 122 sc->sc_podule = pa->pa_podule; 123 podules[sc->sc_podule_number].attached = 1; 124 125 printf(":"); 126 127 if (pa->pa_podule->manufacturer == MANUFACTURER_ACORN 128 && pa->pa_podule->product == PODULE_ACORN_SCSI) 129 printf(" Faulty expansion card identity\n"); 130 131 sc->sc_iobase = (vu_char *)sc->sc_podule->fast_base; 132 133 /* Select page zero (so we can see the config info) */ 134 135 sc->sc_iobase[COSC_PAGE_REGISTER] = 0; 136 137 rp->chipreset = (vu_char *)&dummy[0]; 138 rp->inten = (vu_char *)&dummy[1]; 139 rp->status = (vu_char *)&dummy[2]; 140 rp->term = &sc->sc_iobase[COSC_TERMINATION_CONTROL]; 141 rp->led = (vu_char *)&dummy[4]; 142 esc = &sc->sc_iobase[COSC_ESCOFFSET_BASE]; 143 144 rp->esc.esc_tc_low = &esc[COSC_ESCOFFSET_TCL]; 145 rp->esc.esc_tc_mid = &esc[COSC_ESCOFFSET_TCM]; 146 rp->esc.esc_fifo = &esc[COSC_ESCOFFSET_FIFO]; 147 rp->esc.esc_command = &esc[COSC_ESCOFFSET_COMMAND]; 148 rp->esc.esc_dest_id = &esc[COSC_ESCOFFSET_DESTID]; 149 rp->esc.esc_timeout = &esc[COSC_ESCOFFSET_TIMEOUT]; 150 rp->esc.esc_syncper = &esc[COSC_ESCOFFSET_PERIOD]; 151 rp->esc.esc_syncoff = &esc[COSC_ESCOFFSET_OFFSET]; 152 rp->esc.esc_config1 = &esc[COSC_ESCOFFSET_CONFIG1]; 153 rp->esc.esc_clkconv = &esc[COSC_ESCOFFSET_CLOCKCONV]; 154 rp->esc.esc_test = &esc[COSC_ESCOFFSET_TEST]; 155 rp->esc.esc_config2 = &esc[COSC_ESCOFFSET_CONFIG2]; 156 rp->esc.esc_config3 = &esc[COSC_ESCOFFSET_CONFIG3]; 157 rp->esc.esc_config4 = &esc[COSC_ESCOFFSET_CONFIG4]; 158 rp->esc.esc_tc_high = &esc[COSC_ESCOFFSET_TCH]; 159 rp->esc.esc_fifo_bot = &esc[COSC_ESCOFFSET_FIFOBOTTOM]; 160 161 *rp->esc.esc_command = ESC_CMD_RESET_CHIP; 162 delay(1000); 163 *rp->esc.esc_command = ESC_CMD_NOP; 164 165 /* See if we recognise the controller */ 166 167 switch (*rp->esc.esc_tc_high) { 168 case 0x12: 169 printf(" AM53CF94"); 170 break; 171 default: 172 printf(" Unknown controller (%02x)", *rp->esc.esc_tc_high); 173 break; 174 } 175 176 /* Set termination power */ 177 178 if (sc->sc_iobase[COSC_CONFIG_TERMINATION] & COSC_CONFIG_TERMINATION_ON) { 179 printf(" termpwr on"); 180 sc->sc_iobase[COSC_TERMINATION_CONTROL] = COSC_TERMINATION_ON; 181 } else { 182 printf(" termpwr off"); 183 sc->sc_iobase[COSC_TERMINATION_CONTROL] = COSC_TERMINATION_OFF; 184 } 185 186 /* Don't know what this is for */ 187 188 { 189 int byte; 190 int loop; 191 192 byte = sc->sc_iobase[COSC_REGISTER_01]; 193 byte = 0; 194 for (loop = 0; loop < 8; ++loop) { 195 if (sc->sc_iobase[COSC_REGISTER_00] & 0x01) 196 byte |= (1 << loop); 197 } 198 printf(" byte=%02x", byte); 199 } 200 201 /* 202 * Control register 4 is an AMD special (not on FAS216) 203 * 204 * The powerdown and glitch eater facilities could be useful 205 * Use the podule configuration for this register 206 */ 207 208 sc->sc_softc.sc_config4 = sc->sc_iobase[COSC_CONFIG_CONTROL_REG4]; 209 210 sc->sc_softc.sc_esc = (esc_regmap_p)rp; 211 /* sc->sc_softc.sc_spec = &sc->sc_specific;*/ 212 213 sc->sc_softc.sc_led = cosc_led; 214 sc->sc_softc.sc_setup_dma = cosc_setup_dma; 215 sc->sc_softc.sc_build_dma_chain = cosc_build_dma_chain; 216 sc->sc_softc.sc_need_bump = cosc_need_bump; 217 218 sc->sc_softc.sc_clock_freq = 40; /* Connect32 runs at 40MHz */ 219 sc->sc_softc.sc_timeout = 250; /* Set default timeout to 250ms */ 220 sc->sc_softc.sc_config_flags = ESC_NO_DMA; 221 sc->sc_softc.sc_host_id = sc->sc_iobase[COSC_CONFIG_CONTROL_REG1] & ESC_DEST_ID_MASK; 222 223 printf(" hostid=%d", sc->sc_softc.sc_host_id); 224 225 #if COSC_POLL > 0 226 if (boot_args) 227 get_bootconf_option(boot_args, "coscpoll", 228 BOOTOPT_TYPE_BOOLEAN, &cosc_poll); 229 230 if (cosc_poll) { 231 printf(" polling"); 232 sc->sc_softc.sc_adapter.adapt_flags |= SCSIPI_ADAPT_POLL_ONLY; 233 } 234 #endif 235 236 sc->sc_softc.sc_bump_sz = NBPG; 237 sc->sc_softc.sc_bump_pa = 0x0; 238 239 escinitialize((struct esc_softc *)sc); 240 241 sc->sc_softc.sc_adapter.adapt_dev = &sc->sc_softc.sc_dev; 242 sc->sc_softc.sc_adapter.adapt_nchannels = 1; 243 sc->sc_softc.sc_adapter.adapt_openings = 7; 244 sc->sc_softc.sc_adapter.adapt_max_periph = 1; 245 sc->sc_softc.sc_adapter.adapt_ioctl = NULL; 246 sc->sc_softc.sc_adapter.adapt_minphys = esc_minphys; 247 sc->sc_softc.sc_adapter.adapt_request = esc_scsi_request; 248 249 sc->sc_softc.sc_channel.chan_adapter = &sc->sc_softc.sc_adapter; 250 sc->sc_softc.sc_channel.chan_bustype = &scsi_bustype; 251 sc->sc_softc.sc_channel.chan_channel = 0; 252 sc->sc_softc.sc_channel.chan_ntargets = 8; 253 sc->sc_softc.sc_channel.chan_nluns = 8; 254 sc->sc_softc.sc_channel.chan_id = sc->sc_softc.sc_host_id; 255 256 /* initialise the card */ 257 #if 0 258 *rp->inten = (COSC_POLL?0:1); 259 *rp->led = 0; 260 #endif 261 262 sc->sc_softc.sc_ih.ih_func = cosc_intr; 263 sc->sc_softc.sc_ih.ih_arg = &sc->sc_softc; 264 sc->sc_softc.sc_ih.ih_level = IPL_BIO; 265 sc->sc_softc.sc_ih.ih_name = "scsi: cosc"; 266 sc->sc_softc.sc_ih.ih_maskaddr = sc->sc_podule->irq_addr; 267 sc->sc_softc.sc_ih.ih_maskbits = sc->sc_podule->irq_mask; 268 269 #if COSC_POLL > 0 270 if (!cosc_poll) 271 #endif 272 { 273 evcnt_attach_dynamic(&sc->sc_intrcnt, EVCNT_TYPE_INTR, NULL, 274 dp->dv_xname, "intr"); 275 sc->sc_ih = podulebus_irq_establish(pa->pa_ih, IPL_BIO, 276 cosc_intr, sc, &sc->sc_intrcnt); 277 if (sc->sc_ih == NULL) 278 panic("%s: Cannot install IRQ handler\n", 279 dp->dv_xname); 280 } 281 282 printf("\n"); 283 284 /* attach all scsi units on us */ 285 config_found(dp, &sc->sc_softc.sc_channel, scsiprint); 286 } 287 288 289 /* Turn on/off led */ 290 291 void 292 cosc_led(sc, mode) 293 struct esc_softc *sc; 294 int mode; 295 { 296 cosc_regmap_p rp; 297 298 rp = (cosc_regmap_p)sc->sc_esc; 299 300 if (mode) { 301 sc->sc_led_status++; 302 } else { 303 if (sc->sc_led_status) 304 sc->sc_led_status--; 305 } 306 /* *rp->led = (sc->sc_led_status?1:0);*/ 307 } 308 309 310 int 311 cosc_intr(arg) 312 void *arg; 313 { 314 struct esc_softc *dev = arg; 315 cosc_regmap_p rp; 316 int quickints; 317 318 rp = (cosc_regmap_p)dev->sc_esc; 319 320 printf("cosc_intr:%08x %02x\n", (u_int)rp->esc.esc_status, *rp->esc.esc_status); 321 322 if (*rp->esc.esc_status & ESC_STAT_INTERRUPT_PENDING) { 323 quickints = 16; 324 do { 325 dev->sc_status = *rp->esc.esc_status; 326 dev->sc_interrupt = *rp->esc.esc_interrupt; 327 328 if (dev->sc_interrupt & ESC_INT_RESELECTED) { 329 dev->sc_resel[0] = *rp->esc.esc_fifo; 330 dev->sc_resel[1] = *rp->esc.esc_fifo; 331 } 332 333 escintr(dev); 334 335 } while((*rp->esc.esc_status & ESC_STAT_INTERRUPT_PENDING) 336 && --quickints); 337 } 338 339 return(0); /* Pass interrupt on down the chain */ 340 } 341 342 343 /* Load transfer address into dma register */ 344 345 void 346 cosc_set_dma_adr(sc, ptr) 347 struct esc_softc *sc; 348 void *ptr; 349 { 350 printf("cosc_set_dma_adr(sc = 0x%08x, ptr = 0x%08x)\n", (u_int)sc, (u_int)ptr); 351 return; 352 } 353 354 355 /* Set DMA transfer counter */ 356 357 void 358 cosc_set_dma_tc(sc, len) 359 struct esc_softc *sc; 360 unsigned int len; 361 { 362 printf("cosc_set_dma_tc(sc, len = 0x%08x)", len); 363 364 /* Set the transfer size on the SCSI controller */ 365 366 *sc->sc_esc->esc_tc_low = len; len >>= 8; 367 *sc->sc_esc->esc_tc_mid = len; len >>= 8; 368 *sc->sc_esc->esc_tc_high = len; 369 } 370 371 372 /* Set DMA mode */ 373 374 void 375 cosc_set_dma_mode(sc, mode) 376 struct esc_softc *sc; 377 int mode; 378 { 379 printf("cosc_set_dma_mode(sc, mode = %d)", mode); 380 } 381 382 383 /* Initialize DMA for transfer */ 384 385 int 386 cosc_setup_dma(sc, ptr, len, mode) 387 struct esc_softc *sc; 388 void *ptr; 389 int len; 390 int mode; 391 { 392 /* printf("cosc_setup_dma(sc, ptr = 0x%08x, len = 0x%08x, mode = 0x%08x)\n", (u_int)ptr, len, mode);*/ 393 return(0); 394 395 } 396 397 398 /* Check if address and len is ok for DMA transfer */ 399 400 int 401 cosc_need_bump(sc, ptr, len) 402 struct esc_softc *sc; 403 void *ptr; 404 int len; 405 { 406 int p; 407 408 p = (int)ptr & 0x03; 409 410 if (p) { 411 p = 4-p; 412 413 if (len < 256) 414 p = len; 415 } 416 417 return(p); 418 } 419 420 421 /* Interrupt driven routines */ 422 423 int 424 cosc_build_dma_chain(sc, chain, p, l) 425 struct esc_softc *sc; 426 struct esc_dma_chain *chain; 427 void *p; 428 int l; 429 { 430 printf("cosc_build_dma_chain()\n"); 431 return(0); 432 } 433
Indexes created Thu Oct 02 10:09:58 GMT 2025