qec.c revision 1.9
1/* $OpenBSD: qec.c,v 1.9 2004/12/05 04:31:58 jsg Exp $ */ 2/* $NetBSD: qec.c,v 1.12 2000/12/04 20:12:55 fvdl Exp $ */ 3 4/*- 5 * Copyright (c) 1998 The NetBSD Foundation, Inc. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to The NetBSD Foundation 9 * by Paul Kranenburg. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the NetBSD 22 * Foundation, Inc. and its contributors. 23 * 4. Neither the name of The NetBSD Foundation nor the names of its 24 * contributors may be used to endorse or promote products derived 25 * from this software without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 30 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 37 * POSSIBILITY OF SUCH DAMAGE. 38 */ 39 40#include <sys/types.h> 41#include <sys/param.h> 42#include <sys/systm.h> 43#include <sys/kernel.h> 44#include <sys/errno.h> 45#include <sys/device.h> 46#include <sys/malloc.h> 47 48#include <machine/bus.h> 49#include <machine/intr.h> 50#include <machine/autoconf.h> 51 52#include <dev/sbus/sbusvar.h> 53#include <dev/sbus/qecreg.h> 54#include <dev/sbus/qecvar.h> 55 56int qecprint(void *, const char *); 57int qecmatch(struct device *, void *, void *); 58void qecattach(struct device *, struct device *, void *); 59void qec_init(struct qec_softc *); 60 61int qec_bus_map( 62 bus_space_tag_t, 63 bus_space_tag_t, 64 bus_addr_t, /*offset*/ 65 bus_size_t, /*size*/ 66 int, /*flags*/ 67 bus_space_handle_t *); 68void * qec_intr_establish( 69 bus_space_tag_t, 70 bus_space_tag_t, 71 int, /*bus interrupt priority*/ 72 int, /*`device class' interrupt level*/ 73 int, /*flags*/ 74 int (*)(void *), /*handler*/ 75 void *, /*arg*/ 76 const char *); /*what*/ 77 78struct cfattach qec_ca = { 79 sizeof(struct qec_softc), qecmatch, qecattach 80}; 81 82struct cfdriver qec_cd = { 83 NULL, "qec", DV_DULL 84}; 85 86int 87qecprint(aux, busname) 88 void *aux; 89 const char *busname; 90{ 91 struct sbus_attach_args *sa = aux; 92 bus_space_tag_t t = sa->sa_bustag; 93 struct qec_softc *sc = t->cookie; 94 95 sa->sa_bustag = sc->sc_bustag; /* XXX */ 96 sbus_print(aux, busname); /* XXX */ 97 sa->sa_bustag = t; /* XXX */ 98 return (UNCONF); 99} 100 101int 102qecmatch(parent, vcf, aux) 103 struct device *parent; 104 void *vcf; 105 void *aux; 106{ 107 struct cfdata *cf = vcf; 108 struct sbus_attach_args *sa = aux; 109 110 return (strcmp(cf->cf_driver->cd_name, sa->sa_name) == 0); 111} 112 113/* 114 * Attach all the sub-devices we can find 115 */ 116void 117qecattach(parent, self, aux) 118 struct device *parent, *self; 119 void *aux; 120{ 121 struct sbus_attach_args *sa = aux; 122 struct qec_softc *sc = (void *)self; 123 int node; 124 int sbusburst; 125 struct sparc_bus_space_tag *sbt; 126 bus_space_handle_t bh; 127 int error; 128 129 sc->sc_bustag = sa->sa_bustag; 130 sc->sc_dmatag = sa->sa_dmatag; 131 node = sa->sa_node; 132 133 if (sa->sa_nreg < 2) { 134 printf("%s: only %d register sets\n", 135 self->dv_xname, sa->sa_nreg); 136 return; 137 } 138 139 if (sbus_bus_map(sa->sa_bustag, sa->sa_reg[0].sbr_slot, 140 sa->sa_reg[0].sbr_offset, sa->sa_reg[0].sbr_size, 141 0, 0, &sc->sc_regs) != 0) { 142 printf("%s: attach: cannot map registers\n", self->dv_xname); 143 return; 144 } 145 146 /* 147 * This device's "register space 1" is just a buffer where the 148 * Lance ring-buffers can be stored. Note the buffer's location 149 * and size, so the child driver can pick them up. 150 */ 151 if (sbus_bus_map(sa->sa_bustag, sa->sa_reg[1].sbr_slot, 152 sa->sa_reg[1].sbr_offset, sa->sa_reg[1].sbr_size, 0, 0, &bh) != 0) { 153 printf("%s: attach: cannot map registers\n", self->dv_xname); 154 return; 155 } 156 sc->sc_buffer = (caddr_t)bus_space_vaddr(sc->sc_bustag, bh); 157 sc->sc_bufsiz = (bus_size_t)sa->sa_reg[1].sbr_size; 158 159 /* Get number of on-board channels */ 160 sc->sc_nchannels = getpropint(node, "#channels", -1); 161 if (sc->sc_nchannels == -1) { 162 printf(": no channels\n"); 163 return; 164 } 165 166 /* 167 * Get transfer burst size from PROM 168 */ 169 sbusburst = ((struct sbus_softc *)parent)->sc_burst; 170 if (sbusburst == 0) 171 sbusburst = SBUS_BURST_32 - 1; /* 1->16 */ 172 173 sc->sc_burst = getpropint(node, "burst-sizes", -1); 174 if (sc->sc_burst == -1) 175 /* take SBus burst sizes */ 176 sc->sc_burst = sbusburst; 177 178 /* Clamp at parent's burst sizes */ 179 sc->sc_burst &= sbusburst; 180 181 sbus_establish(&sc->sc_sd, &sc->sc_dev); 182 183 /* 184 * Collect address translations from the OBP. 185 */ 186 error = getprop(node, "ranges", sizeof(struct sbus_range), 187 &sc->sc_nrange, (void **)&sc->sc_range); 188 switch (error) { 189 case 0: 190 break; 191 case ENOENT: 192 default: 193 panic("%s: error getting ranges property", self->dv_xname); 194 } 195 196 /* Allocate a bus tag */ 197 sbt = malloc(sizeof(*sbt), M_DEVBUF, M_NOWAIT); 198 if (sbt == NULL) { 199 printf("%s: attach: out of memory\n", self->dv_xname); 200 return; 201 } 202 203 bzero(sbt, sizeof *sbt); 204 strlcpy(sbt->name, sc->sc_dev.dv_xname, sizeof(sbt->name)); 205 sbt->cookie = sc; 206 sbt->parent = sc->sc_bustag; 207 sbt->asi = sbt->parent->asi; 208 sbt->sasi = sbt->parent->sasi; 209 sbt->sparc_bus_map = qec_bus_map; 210 sbt->sparc_intr_establish = qec_intr_establish; 211 212 /* 213 * Save interrupt information for use in our qec_intr_establish() 214 * function below. Apparently, the intr level for the quad 215 * ethernet board (qe) is stored in the QEC node rather than 216 * separately in each of the QE nodes. 217 * 218 * XXX - qe.c should call bus_intr_establish() with `level = 0'.. 219 * XXX - maybe we should have our own attach args for all that. 220 */ 221 sc->sc_intr = sa->sa_intr; 222 223 printf(": %dK memory\n", sc->sc_bufsiz / 1024); 224 225 qec_init(sc); 226 227 /* search through children */ 228 for (node = firstchild(node); node; node = nextsibling(node)) { 229 struct sbus_attach_args sa; 230 231 sbus_setup_attach_args((struct sbus_softc *)parent, 232 sbt, sc->sc_dmatag, node, &sa); 233 (void)config_found(&sc->sc_dev, (void *)&sa, qecprint); 234 sbus_destroy_attach_args(&sa); 235 } 236} 237 238int 239qec_bus_map(t, t0, addr, size, flags, hp) 240 bus_space_tag_t t; 241 bus_space_tag_t t0; 242 bus_addr_t addr; 243 bus_size_t size; 244 int flags; 245 bus_space_handle_t *hp; 246{ 247 struct qec_softc *sc = t->cookie; 248 int slot = BUS_ADDR_IOSPACE(addr); 249 bus_addr_t offset = BUS_ADDR_PADDR(addr); 250 int i; 251 252 for (t = t->parent; t; t = t->parent) { 253 if (t->sparc_bus_map != NULL) 254 break; 255 } 256 257 if (t == NULL) { 258 printf("\nqec_bus_map: invalid parent"); 259 return (EINVAL); 260 } 261 262 if (flags & BUS_SPACE_MAP_PROMADDRESS) { 263 return ((*t->sparc_bus_map) 264 (t, t0, offset, size, flags, hp)); 265 } 266 267 for (i = 0; i < sc->sc_nrange; i++) { 268 bus_addr_t paddr; 269 int iospace; 270 271 if (sc->sc_range[i].cspace != slot) 272 continue; 273 274 /* We've found the connection to the parent bus */ 275 paddr = sc->sc_range[i].poffset + offset; 276 iospace = sc->sc_range[i].pspace; 277 return ((*t->sparc_bus_map) 278 (t, t0, BUS_ADDR(iospace, paddr), size, flags, hp)); 279 } 280 281 return (EINVAL); 282} 283 284void * 285qec_intr_establish(t, t0, pri, level, flags, handler, arg, what) 286 bus_space_tag_t t; 287 bus_space_tag_t t0; 288 int pri; 289 int level; 290 int flags; 291 int (*handler)(void *); 292 void *arg; 293 const char *what; 294{ 295 struct qec_softc *sc = t->cookie; 296 297 if (pri == 0) { 298 /* 299 * qe.c calls bus_intr_establish() with `pri == 0' 300 * XXX - see also comment in qec_attach(). 301 */ 302 if (sc->sc_intr == NULL) { 303 printf("%s: warning: no interrupts\n", 304 sc->sc_dev.dv_xname); 305 return (NULL); 306 } 307 pri = sc->sc_intr->sbi_pri; 308 } 309 310 for (t = t->parent; t; t = t->parent) { 311 if (t->sparc_intr_establish != NULL) 312 return ((*t->sparc_intr_establish) 313 (t, t0, pri, level, flags, handler, arg, what)); 314 } 315 316 panic("qec_intr_extablish): no handler found"); 317 318 return (NULL); 319} 320 321void 322qec_init(sc) 323 struct qec_softc *sc; 324{ 325 bus_space_tag_t t = sc->sc_bustag; 326 bus_space_handle_t qr = sc->sc_regs; 327 u_int32_t v, burst = 0, psize; 328 int i; 329 330 /* First, reset the controller */ 331 bus_space_write_4(t, qr, QEC_QRI_CTRL, QEC_CTRL_RESET); 332 for (i = 0; i < 1000; i++) { 333 DELAY(100); 334 v = bus_space_read_4(t, qr, QEC_QRI_CTRL); 335 if ((v & QEC_CTRL_RESET) == 0) 336 break; 337 } 338 339 /* 340 * Cut available buffer size into receive and transmit buffers. 341 * XXX - should probably be done in be & qe driver... 342 */ 343 v = sc->sc_msize = sc->sc_bufsiz / sc->sc_nchannels; 344 bus_space_write_4(t, qr, QEC_QRI_MSIZE, v); 345 346 v = sc->sc_rsize = sc->sc_bufsiz / (sc->sc_nchannels * 2); 347 bus_space_write_4(t, qr, QEC_QRI_RSIZE, v); 348 bus_space_write_4(t, qr, QEC_QRI_TSIZE, v); 349 350 psize = sc->sc_nchannels == 1 ? QEC_PSIZE_2048 : 0; 351 bus_space_write_4(t, qr, QEC_QRI_PSIZE, psize); 352 353 if (sc->sc_burst & SBUS_BURST_64) 354 burst = QEC_CTRL_B64; 355 else if (sc->sc_burst & SBUS_BURST_32) 356 burst = QEC_CTRL_B32; 357 else 358 burst = QEC_CTRL_B16; 359 360 v = bus_space_read_4(t, qr, QEC_QRI_CTRL); 361 v = (v & QEC_CTRL_MODEMASK) | burst; 362 bus_space_write_4(t, qr, QEC_QRI_CTRL, v); 363} 364 365/* 366 * Common routine to initialize the QEC packet ring buffer. 367 * Called from be & qe drivers. 368 */ 369void 370qec_meminit(qr, pktbufsz) 371 struct qec_ring *qr; 372 unsigned int pktbufsz; 373{ 374 bus_addr_t txbufdma, rxbufdma; 375 bus_addr_t dma; 376 caddr_t p; 377 unsigned int ntbuf, nrbuf, i; 378 379 p = qr->rb_membase; 380 dma = qr->rb_dmabase; 381 382 ntbuf = qr->rb_ntbuf; 383 nrbuf = qr->rb_nrbuf; 384 385 /* 386 * Allocate transmit descriptors 387 */ 388 qr->rb_txd = (struct qec_xd *)p; 389 qr->rb_txddma = dma; 390 p += QEC_XD_RING_MAXSIZE * sizeof(struct qec_xd); 391 dma += QEC_XD_RING_MAXSIZE * sizeof(struct qec_xd); 392 393 /* 394 * Allocate receive descriptors 395 */ 396 qr->rb_rxd = (struct qec_xd *)p; 397 qr->rb_rxddma = dma; 398 p += QEC_XD_RING_MAXSIZE * sizeof(struct qec_xd); 399 dma += QEC_XD_RING_MAXSIZE * sizeof(struct qec_xd); 400 401 402 /* 403 * Allocate transmit buffers 404 */ 405 qr->rb_txbuf = p; 406 txbufdma = dma; 407 p += ntbuf * pktbufsz; 408 dma += ntbuf * pktbufsz; 409 410 /* 411 * Allocate receive buffers 412 */ 413 qr->rb_rxbuf = p; 414 rxbufdma = dma; 415 p += nrbuf * pktbufsz; 416 dma += nrbuf * pktbufsz; 417 418 /* 419 * Initialize transmit buffer descriptors 420 */ 421 for (i = 0; i < QEC_XD_RING_MAXSIZE; i++) { 422 qr->rb_txd[i].xd_addr = (u_int32_t) 423 (txbufdma + (i % ntbuf) * pktbufsz); 424 qr->rb_txd[i].xd_flags = 0; 425 } 426 427 /* 428 * Initialize receive buffer descriptors 429 */ 430 for (i = 0; i < QEC_XD_RING_MAXSIZE; i++) { 431 qr->rb_rxd[i].xd_addr = (u_int32_t) 432 (rxbufdma + (i % nrbuf) * pktbufsz); 433 qr->rb_rxd[i].xd_flags = (i < nrbuf) 434 ? QEC_XD_OWN | (pktbufsz & QEC_XD_LENGTH) 435 : 0; 436 } 437 438 qr->rb_tdhead = qr->rb_tdtail = 0; 439 qr->rb_td_nbusy = 0; 440 qr->rb_rdtail = 0; 441} 442