1 /* $NetBSD: cosc.c,v 1.16 2009/05/12 06:54:10 cegger 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@knipp.de> at MCS for loaning a card. 41 * Thanks to Andreas Gandor <andi@knipp.de> for some technical information 42 */ 43 44 #include <sys/cdefs.h> 45 __KERNEL_RCSID(0, "$NetBSD: cosc.c,v 1.16 2009/05/12 06:54:10 cegger Exp $"); 46 47 #include <sys/param.h> 48 #include <sys/systm.h> 49 #include <sys/kernel.h> 50 #include <sys/device.h> 51 52 #include <uvm/uvm_extern.h> 53 54 #include <dev/scsipi/scsi_all.h> 55 #include <dev/scsipi/scsipi_all.h> 56 #include <dev/scsipi/scsiconf.h> 57 #include <machine/bootconfig.h> 58 #include <machine/io.h> 59 #include <machine/intr.h> 60 #include <arm/arm32/katelib.h> 61 #include <acorn32/podulebus/podulebus.h> 62 #include <acorn32/podulebus/escreg.h> 63 #include <acorn32/podulebus/escvar.h> 64 #include <acorn32/podulebus/coscreg.h> 65 #include <acorn32/podulebus/coscvar.h> 66 #include <dev/podulebus/podules.h> 67 68 void coscattach(struct device *, struct device *, void *); 69 int coscmatch(struct device *, struct cfdata *, void *); 70 71 CFATTACH_DECL(cosc, sizeof(struct cosc_softc), 72 coscmatch, coscattach, NULL, NULL); 73 74 int cosc_intr(void *); 75 int cosc_setup_dma(struct esc_softc *, void *, int, int); 76 int cosc_build_dma_chain(struct esc_softc *, struct esc_dma_chain *, void *, 77 int); 78 int cosc_need_bump(struct esc_softc *, void *, int); 79 void cosc_led(struct esc_softc *, int); 80 void cosc_set_dma_adr(struct esc_softc *, void *); 81 void cosc_set_dma_tc(struct esc_softc *, unsigned int); 82 void cosc_set_dma_mode(struct esc_softc *, int); 83 84 #if COSC_POLL > 0 85 int cosc_poll = 1; 86 #endif 87 88 int 89 coscmatch(struct device *pdp, struct cfdata *cf, 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(struct device *pdp, struct device *dp, 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 = PAGE_SIZE; 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 device_xname(dp), "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", 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(struct esc_softc *sc, int mode) 293 { 294 cosc_regmap_p rp; 295 296 rp = (cosc_regmap_p)sc->sc_esc; 297 298 if (mode) { 299 sc->sc_led_status++; 300 } else { 301 if (sc->sc_led_status) 302 sc->sc_led_status--; 303 } 304 /* *rp->led = (sc->sc_led_status?1:0);*/ 305 } 306 307 308 int 309 cosc_intr(void *arg) 310 { 311 struct esc_softc *dev = arg; 312 cosc_regmap_p rp; 313 int quickints; 314 315 rp = (cosc_regmap_p)dev->sc_esc; 316 317 printf("cosc_intr:%08x %02x\n", (u_int)rp->esc.esc_status, *rp->esc.esc_status); 318 319 if (*rp->esc.esc_status & ESC_STAT_INTERRUPT_PENDING) { 320 quickints = 16; 321 do { 322 dev->sc_status = *rp->esc.esc_status; 323 dev->sc_interrupt = *rp->esc.esc_interrupt; 324 325 if (dev->sc_interrupt & ESC_INT_RESELECTED) { 326 dev->sc_resel[0] = *rp->esc.esc_fifo; 327 dev->sc_resel[1] = *rp->esc.esc_fifo; 328 } 329 330 escintr(dev); 331 332 } while((*rp->esc.esc_status & ESC_STAT_INTERRUPT_PENDING) 333 && --quickints); 334 } 335 336 return(0); /* Pass interrupt on down the chain */ 337 } 338 339 340 /* Load transfer address into dma register */ 341 342 void 343 cosc_set_dma_adr(struct esc_softc *sc, void *ptr) 344 { 345 printf("cosc_set_dma_adr(sc = 0x%08x, ptr = 0x%08x)\n", (u_int)sc, (u_int)ptr); 346 return; 347 } 348 349 350 /* Set DMA transfer counter */ 351 352 void 353 cosc_set_dma_tc(struct esc_softc *sc, unsigned int len) 354 { 355 printf("cosc_set_dma_tc(sc, len = 0x%08x)", len); 356 357 /* Set the transfer size on the SCSI controller */ 358 359 *sc->sc_esc->esc_tc_low = len; len >>= 8; 360 *sc->sc_esc->esc_tc_mid = len; len >>= 8; 361 *sc->sc_esc->esc_tc_high = len; 362 } 363 364 365 /* Set DMA mode */ 366 367 void 368 cosc_set_dma_mode(struct esc_softc *sc, int mode) 369 { 370 printf("cosc_set_dma_mode(sc, mode = %d)", mode); 371 } 372 373 374 /* Initialize DMA for transfer */ 375 376 int 377 cosc_setup_dma(struct esc_softc *sc, void *ptr, int len, int mode) 378 { 379 /* printf("cosc_setup_dma(sc, ptr = 0x%08x, len = 0x%08x, mode = 0x%08x)\n", (u_int)ptr, len, mode);*/ 380 return(0); 381 382 } 383 384 385 /* Check if address and len is ok for DMA transfer */ 386 387 int 388 cosc_need_bump(struct esc_softc *sc, void *ptr, int len) 389 { 390 int p; 391 392 p = (int)ptr & 0x03; 393 394 if (p) { 395 p = 4-p; 396 397 if (len < 256) 398 p = len; 399 } 400 401 return(p); 402 } 403 404 405 /* Interrupt driven routines */ 406 407 int 408 cosc_build_dma_chain(struct esc_softc *sc, struct esc_dma_chain *chain, void *p, int l) 409 { 410 printf("cosc_build_dma_chain()\n"); 411 return(0); 412 } 413