qec.c revision 1.8
1 /* $NetBSD: qec.c,v 1.8 1999/01/17 20:47:50 pk Exp $ */ 2 3 /*- 4 * Copyright (c) 1998 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Paul Kranenburg. 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 NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 #include <sys/types.h> 40 #include <sys/param.h> 41 #include <sys/systm.h> 42 #include <sys/kernel.h> 43 #include <sys/errno.h> 44 #include <sys/device.h> 45 #include <sys/malloc.h> 46 47 #include <machine/bus.h> 48 #include <machine/autoconf.h> 49 50 #include <dev/sbus/sbusvar.h> 51 #include <dev/sbus/qecreg.h> 52 #include <dev/sbus/qecvar.h> 53 54 static int qecprint __P((void *, const char *)); 55 static int qecmatch __P((struct device *, struct cfdata *, void *)); 56 static void qecattach __P((struct device *, struct device *, void *)); 57 void qec_init __P((struct qec_softc *)); 58 59 static int qec_bus_map __P(( 60 bus_space_tag_t, 61 bus_type_t, /*slot*/ 62 bus_addr_t, /*offset*/ 63 bus_size_t, /*size*/ 64 int, /*flags*/ 65 vaddr_t, /*preferred virtual address */ 66 bus_space_handle_t *)); 67 static void *qec_intr_establish __P(( 68 bus_space_tag_t, 69 int, /*level*/ 70 int, /*flags*/ 71 int (*) __P((void *)), /*handler*/ 72 void *)); /*arg*/ 73 74 struct cfattach qec_ca = { 75 sizeof(struct qec_softc), qecmatch, qecattach 76 }; 77 78 int 79 qecprint(aux, busname) 80 void *aux; 81 const char *busname; 82 { 83 struct sbus_attach_args *sa = aux; 84 bus_space_tag_t t = sa->sa_bustag; 85 struct qec_softc *sc = t->cookie; 86 87 sa->sa_bustag = sc->sc_bustag; /* XXX */ 88 sbus_print(aux, busname); /* XXX */ 89 sa->sa_bustag = t; /* XXX */ 90 return (UNCONF); 91 } 92 93 int 94 qecmatch(parent, cf, aux) 95 struct device *parent; 96 struct cfdata *cf; 97 void *aux; 98 { 99 struct sbus_attach_args *sa = aux; 100 101 return (strcmp(cf->cf_driver->cd_name, sa->sa_name) == 0); 102 } 103 104 /* 105 * Attach all the sub-devices we can find 106 */ 107 void 108 qecattach(parent, self, aux) 109 struct device *parent, *self; 110 void *aux; 111 { 112 struct sbus_attach_args *sa = aux; 113 struct qec_softc *sc = (void *)self; 114 int node; 115 int sbusburst; 116 bus_space_tag_t sbt; 117 bus_space_handle_t bh; 118 struct bootpath *bp; 119 int error; 120 121 sc->sc_bustag = sa->sa_bustag; 122 sc->sc_dmatag = sa->sa_dmatag; 123 node = sa->sa_node; 124 125 if (sa->sa_nreg < 2) { 126 printf("%s: only %d register sets\n", 127 self->dv_xname, sa->sa_nreg); 128 return; 129 } 130 131 if (sbus_bus_map(sa->sa_bustag, 132 sa->sa_reg[0].sbr_slot, 133 sa->sa_reg[0].sbr_offset, 134 sa->sa_reg[0].sbr_size, 135 BUS_SPACE_MAP_LINEAR, 0, &sc->sc_regs) != 0) { 136 printf("%s: attach: cannot map registers\n", self->dv_xname); 137 return; 138 } 139 140 /* 141 * This device's "register space 1" is just a buffer where the 142 * Lance ring-buffers can be stored. Note the buffer's location 143 * and size, so the child driver can pick them up. 144 */ 145 if (sbus_bus_map(sa->sa_bustag, 146 sa->sa_reg[1].sbr_slot, 147 sa->sa_reg[1].sbr_offset, 148 sa->sa_reg[1].sbr_size, 149 BUS_SPACE_MAP_LINEAR, 0, &bh) != 0) { 150 printf("%s: attach: cannot map registers\n", self->dv_xname); 151 return; 152 } 153 sc->sc_buffer = (caddr_t)bh; 154 sc->sc_bufsiz = (bus_size_t)sa->sa_reg[1].sbr_size; 155 156 /* Get number of on-board channels */ 157 sc->sc_nchannels = getpropint(node, "#channels", -1); 158 if (sc->sc_nchannels == -1) { 159 printf(": no channels\n"); 160 return; 161 } 162 163 /* 164 * Get transfer burst size from PROM 165 */ 166 sbusburst = ((struct sbus_softc *)parent)->sc_burst; 167 if (sbusburst == 0) 168 sbusburst = SBUS_BURST_32 - 1; /* 1->16 */ 169 170 sc->sc_burst = getpropint(node, "burst-sizes", -1); 171 if (sc->sc_burst == -1) 172 /* take SBus burst sizes */ 173 sc->sc_burst = sbusburst; 174 175 /* Clamp at parent's burst sizes */ 176 sc->sc_burst &= sbusburst; 177 178 sbus_establish(&sc->sc_sd, &sc->sc_dev); 179 180 /* 181 * Collect address translations from the OBP. 182 */ 183 error = getprop(node, "ranges", sizeof(struct sbus_range), 184 &sc->sc_nrange, (void **)&sc->sc_range); 185 switch (error) { 186 case 0: 187 break; 188 case ENOENT: 189 default: 190 panic("%s: error getting ranges property", self->dv_xname); 191 } 192 193 /* Propagate bootpath */ 194 if (sa->sa_bp != NULL) 195 bp = sa->sa_bp + 1; 196 else 197 bp = NULL; 198 199 /* Allocate a bus tag */ 200 sbt = (bus_space_tag_t) 201 malloc(sizeof(struct sparc_bus_space_tag), M_DEVBUF, M_NOWAIT); 202 if (sbt == NULL) { 203 printf("%s: attach: out of memory\n", self->dv_xname); 204 return; 205 } 206 207 bzero(sbt, sizeof *sbt); 208 sbt->cookie = sc; 209 sbt->parent = sc->sc_bustag; 210 sbt->sparc_bus_map = qec_bus_map; 211 sbt->sparc_intr_establish = qec_intr_establish; 212 213 /* 214 * Save interrupt information for use in our qec_intr_establish() 215 * function below. Apparently, the intr level for the quad 216 * ethernet board (qe) is stored in the QEC node rather then 217 * separately in each of the QE nodes. 218 * 219 * XXX - qe.c should call bus_intr_establish() with `level = 0'.. 220 * XXX - maybe we should have our own attach args for all that. 221 */ 222 sc->sc_intr = sa->sa_intr; 223 224 printf(": %dK memory\n", sc->sc_bufsiz / 1024); 225 226 qec_init(sc); 227 228 /* search through children */ 229 for (node = firstchild(node); node; node = nextsibling(node)) { 230 struct sbus_attach_args sa; 231 sbus_setup_attach_args((struct sbus_softc *)parent, 232 sbt, sc->sc_dmatag, node, bp, &sa); 233 (void)config_found(&sc->sc_dev, (void *)&sa, qecprint); 234 sbus_destroy_attach_args(&sa); 235 } 236 } 237 238 int 239 qec_bus_map(t, btype, offset, size, flags, vaddr, hp) 240 bus_space_tag_t t; 241 bus_type_t btype; 242 bus_addr_t offset; 243 bus_size_t size; 244 int flags; 245 vaddr_t vaddr; 246 bus_space_handle_t *hp; 247 { 248 struct qec_softc *sc = t->cookie; 249 int slot = btype; 250 int i; 251 252 for (i = 0; i < sc->sc_nrange; i++) { 253 bus_addr_t paddr; 254 bus_type_t iospace; 255 256 if (sc->sc_range[i].cspace != slot) 257 continue; 258 259 /* We've found the connection to the parent bus */ 260 paddr = sc->sc_range[i].poffset + offset; 261 iospace = sc->sc_range[i].pspace; 262 return (bus_space_map2(sc->sc_bustag, iospace, paddr, 263 size, flags, vaddr, hp)); 264 } 265 266 return (EINVAL); 267 } 268 269 void * 270 qec_intr_establish(t, level, flags, handler, arg) 271 bus_space_tag_t t; 272 int level; 273 int flags; 274 int (*handler) __P((void *)); 275 void *arg; 276 { 277 struct qec_softc *sc = t->cookie; 278 279 if (level == 0) { 280 /* 281 * qe.c calls bus_intr_establish() with `level = 0' 282 * XXX - see also comment in qec_attach(). 283 */ 284 if (sc->sc_intr == NULL) { 285 printf("%s: warning: no interrupts\n", 286 sc->sc_dev.dv_xname); 287 return (NULL); 288 } 289 level = sc->sc_intr->sbi_pri; 290 } 291 292 return (bus_intr_establish(t->parent, level, flags, handler, arg)); 293 } 294 295 void 296 qec_init(sc) 297 struct qec_softc *sc; 298 { 299 bus_space_tag_t t = sc->sc_bustag; 300 bus_space_handle_t qr = sc->sc_regs; 301 u_int32_t v, burst = 0; 302 303 /* 304 * Cut available buffer size into receive and transmit buffers. 305 * XXX - should probably be done in be & qe driver... 306 */ 307 v = sc->sc_msize = sc->sc_bufsiz / sc->sc_nchannels; 308 bus_space_write_4(t, qr, QEC_QRI_MSIZE, v); 309 310 v = sc->sc_rsize = sc->sc_bufsiz / (sc->sc_nchannels * 2); 311 bus_space_write_4(t, qr, QEC_QRI_RSIZE, v); 312 bus_space_write_4(t, qr, QEC_QRI_TSIZE, v); 313 314 bus_space_write_4(t, qr, QEC_QRI_PSIZE, QEC_PSIZE_2048); 315 316 if (sc->sc_burst & SBUS_BURST_64) 317 burst = QEC_CTRL_B64; 318 else if (sc->sc_burst & SBUS_BURST_32) 319 burst = QEC_CTRL_B32; 320 else 321 burst = QEC_CTRL_B16; 322 323 v = bus_space_read_4(t, qr, QEC_QRI_CTRL); 324 v = (v & QEC_CTRL_MODEMASK) | burst; 325 bus_space_write_4(t, qr, QEC_QRI_CTRL, v); 326 } 327 328 /* 329 * Common routine to initialize the QEC packet ring buffer. 330 * Called from be & qe drivers. 331 */ 332 void 333 qec_meminit(qr, pktbufsz) 334 struct qec_ring *qr; 335 unsigned int pktbufsz; 336 { 337 bus_addr_t txbufdma, rxbufdma; 338 bus_addr_t dma; 339 caddr_t p; 340 unsigned int ntbuf, nrbuf, i; 341 342 p = qr->rb_membase; 343 dma = qr->rb_dmabase; 344 345 ntbuf = qr->rb_ntbuf; 346 nrbuf = qr->rb_nrbuf; 347 348 /* 349 * Allocate transmit descriptors 350 */ 351 qr->rb_txd = (struct qec_xd *)p; 352 qr->rb_txddma = dma; 353 p += QEC_XD_RING_MAXSIZE * sizeof(struct qec_xd); 354 dma += QEC_XD_RING_MAXSIZE * sizeof(struct qec_xd); 355 356 /* 357 * Allocate receive descriptors 358 */ 359 qr->rb_rxd = (struct qec_xd *)p; 360 qr->rb_rxddma = dma; 361 p += QEC_XD_RING_MAXSIZE * sizeof(struct qec_xd); 362 dma += QEC_XD_RING_MAXSIZE * sizeof(struct qec_xd); 363 364 365 /* 366 * Allocate transmit buffers 367 */ 368 qr->rb_txbuf = p; 369 txbufdma = dma; 370 p += ntbuf * pktbufsz; 371 dma += ntbuf * pktbufsz; 372 373 /* 374 * Allocate receive buffers 375 */ 376 qr->rb_rxbuf = p; 377 rxbufdma = dma; 378 p += nrbuf * pktbufsz; 379 dma += nrbuf * pktbufsz; 380 381 /* 382 * Initialize transmit buffer descriptors 383 */ 384 for (i = 0; i < QEC_XD_RING_MAXSIZE; i++) { 385 qr->rb_txd[i].xd_addr = (u_int32_t) 386 (txbufdma + (i % ntbuf) * pktbufsz); 387 qr->rb_txd[i].xd_flags = 0; 388 } 389 390 /* 391 * Initialize receive buffer descriptors 392 */ 393 for (i = 0; i < QEC_XD_RING_MAXSIZE; i++) { 394 qr->rb_rxd[i].xd_addr = (u_int32_t) 395 (rxbufdma + (i % nrbuf) * pktbufsz); 396 qr->rb_rxd[i].xd_flags = (i < nrbuf) 397 ? QEC_XD_OWN | (pktbufsz & QEC_XD_LENGTH) 398 : 0; 399 } 400 401 qr->rb_tdhead = qr->rb_tdtail = 0; 402 qr->rb_td_nbusy = 0; 403 qr->rb_rdtail = 0; 404 } 405
Indexes created Wed Sep 24 14:09:57 GMT 2025