if_vge.c revision 200526
1/*- 2 * Copyright (c) 2004 3 * Bill Paul <wpaul@windriver.com>. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by Bill Paul. 16 * 4. Neither the name of the author nor the names of any co-contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD 24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 30 * THE POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33#include <sys/cdefs.h> 34__FBSDID("$FreeBSD: head/sys/dev/vge/if_vge.c 200526 2009-12-14 18:49:16Z yongari $"); 35 36/* 37 * VIA Networking Technologies VT612x PCI gigabit ethernet NIC driver. 38 * 39 * Written by Bill Paul <wpaul@windriver.com> 40 * Senior Networking Software Engineer 41 * Wind River Systems 42 */ 43 44/* 45 * The VIA Networking VT6122 is a 32bit, 33/66Mhz PCI device that 46 * combines a tri-speed ethernet MAC and PHY, with the following 47 * features: 48 * 49 * o Jumbo frame support up to 16K 50 * o Transmit and receive flow control 51 * o IPv4 checksum offload 52 * o VLAN tag insertion and stripping 53 * o TCP large send 54 * o 64-bit multicast hash table filter 55 * o 64 entry CAM filter 56 * o 16K RX FIFO and 48K TX FIFO memory 57 * o Interrupt moderation 58 * 59 * The VT6122 supports up to four transmit DMA queues. The descriptors 60 * in the transmit ring can address up to 7 data fragments; frames which 61 * span more than 7 data buffers must be coalesced, but in general the 62 * BSD TCP/IP stack rarely generates frames more than 2 or 3 fragments 63 * long. The receive descriptors address only a single buffer. 64 * 65 * There are two peculiar design issues with the VT6122. One is that 66 * receive data buffers must be aligned on a 32-bit boundary. This is 67 * not a problem where the VT6122 is used as a LOM device in x86-based 68 * systems, but on architectures that generate unaligned access traps, we 69 * have to do some copying. 70 * 71 * The other issue has to do with the way 64-bit addresses are handled. 72 * The DMA descriptors only allow you to specify 48 bits of addressing 73 * information. The remaining 16 bits are specified using one of the 74 * I/O registers. If you only have a 32-bit system, then this isn't 75 * an issue, but if you have a 64-bit system and more than 4GB of 76 * memory, you must have to make sure your network data buffers reside 77 * in the same 48-bit 'segment.' 78 * 79 * Special thanks to Ryan Fu at VIA Networking for providing documentation 80 * and sample NICs for testing. 81 */ 82 83#ifdef HAVE_KERNEL_OPTION_HEADERS 84#include "opt_device_polling.h" 85#endif 86 87#include <sys/param.h> 88#include <sys/endian.h> 89#include <sys/systm.h> 90#include <sys/sockio.h> 91#include <sys/mbuf.h> 92#include <sys/malloc.h> 93#include <sys/module.h> 94#include <sys/kernel.h> 95#include <sys/socket.h> 96 97#include <net/if.h> 98#include <net/if_arp.h> 99#include <net/ethernet.h> 100#include <net/if_dl.h> 101#include <net/if_media.h> 102#include <net/if_types.h> 103#include <net/if_vlan_var.h> 104 105#include <net/bpf.h> 106 107#include <machine/bus.h> 108#include <machine/resource.h> 109#include <sys/bus.h> 110#include <sys/rman.h> 111 112#include <dev/mii/mii.h> 113#include <dev/mii/miivar.h> 114 115#include <dev/pci/pcireg.h> 116#include <dev/pci/pcivar.h> 117 118MODULE_DEPEND(vge, pci, 1, 1, 1); 119MODULE_DEPEND(vge, ether, 1, 1, 1); 120MODULE_DEPEND(vge, miibus, 1, 1, 1); 121 122/* "device miibus" required. See GENERIC if you get errors here. */ 123#include "miibus_if.h" 124 125#include <dev/vge/if_vgereg.h> 126#include <dev/vge/if_vgevar.h> 127 128#define VGE_CSUM_FEATURES (CSUM_IP | CSUM_TCP | CSUM_UDP) 129 130/* 131 * Various supported device vendors/types and their names. 132 */ 133static struct vge_type vge_devs[] = { 134 { VIA_VENDORID, VIA_DEVICEID_61XX, 135 "VIA Networking Gigabit Ethernet" }, 136 { 0, 0, NULL } 137}; 138 139static int vge_probe (device_t); 140static int vge_attach (device_t); 141static int vge_detach (device_t); 142 143static int vge_encap (struct vge_softc *, struct mbuf **); 144 145static void vge_dmamap_cb (void *, bus_dma_segment_t *, int, int); 146static int vge_dma_alloc (struct vge_softc *); 147static void vge_dma_free (struct vge_softc *); 148static void vge_discard_rxbuf (struct vge_softc *, int); 149static int vge_newbuf (struct vge_softc *, int); 150static int vge_rx_list_init (struct vge_softc *); 151static int vge_tx_list_init (struct vge_softc *); 152static void vge_freebufs (struct vge_softc *); 153#ifndef __NO_STRICT_ALIGNMENT 154static __inline void vge_fixup_rx 155 (struct mbuf *); 156#endif 157static int vge_rxeof (struct vge_softc *, int); 158static void vge_txeof (struct vge_softc *); 159static void vge_intr (void *); 160static void vge_tick (void *); 161static void vge_start (struct ifnet *); 162static void vge_start_locked (struct ifnet *); 163static int vge_ioctl (struct ifnet *, u_long, caddr_t); 164static void vge_init (void *); 165static void vge_init_locked (struct vge_softc *); 166static void vge_stop (struct vge_softc *); 167static void vge_watchdog (void *); 168static int vge_suspend (device_t); 169static int vge_resume (device_t); 170static int vge_shutdown (device_t); 171static int vge_ifmedia_upd (struct ifnet *); 172static void vge_ifmedia_sts (struct ifnet *, struct ifmediareq *); 173 174#ifdef VGE_EEPROM 175static void vge_eeprom_getword (struct vge_softc *, int, u_int16_t *); 176#endif 177static void vge_read_eeprom (struct vge_softc *, caddr_t, int, int, int); 178 179static void vge_miipoll_start (struct vge_softc *); 180static void vge_miipoll_stop (struct vge_softc *); 181static int vge_miibus_readreg (device_t, int, int); 182static int vge_miibus_writereg (device_t, int, int, int); 183static void vge_miibus_statchg (device_t); 184 185static void vge_cam_clear (struct vge_softc *); 186static int vge_cam_set (struct vge_softc *, uint8_t *); 187static void vge_setmulti (struct vge_softc *); 188static void vge_reset (struct vge_softc *); 189 190static device_method_t vge_methods[] = { 191 /* Device interface */ 192 DEVMETHOD(device_probe, vge_probe), 193 DEVMETHOD(device_attach, vge_attach), 194 DEVMETHOD(device_detach, vge_detach), 195 DEVMETHOD(device_suspend, vge_suspend), 196 DEVMETHOD(device_resume, vge_resume), 197 DEVMETHOD(device_shutdown, vge_shutdown), 198 199 /* bus interface */ 200 DEVMETHOD(bus_print_child, bus_generic_print_child), 201 DEVMETHOD(bus_driver_added, bus_generic_driver_added), 202 203 /* MII interface */ 204 DEVMETHOD(miibus_readreg, vge_miibus_readreg), 205 DEVMETHOD(miibus_writereg, vge_miibus_writereg), 206 DEVMETHOD(miibus_statchg, vge_miibus_statchg), 207 208 { 0, 0 } 209}; 210 211static driver_t vge_driver = { 212 "vge", 213 vge_methods, 214 sizeof(struct vge_softc) 215}; 216 217static devclass_t vge_devclass; 218 219DRIVER_MODULE(vge, pci, vge_driver, vge_devclass, 0, 0); 220DRIVER_MODULE(miibus, vge, miibus_driver, miibus_devclass, 0, 0); 221 222#ifdef VGE_EEPROM 223/* 224 * Read a word of data stored in the EEPROM at address 'addr.' 225 */ 226static void 227vge_eeprom_getword(sc, addr, dest) 228 struct vge_softc *sc; 229 int addr; 230 u_int16_t *dest; 231{ 232 int i; 233 u_int16_t word = 0; 234 235 /* 236 * Enter EEPROM embedded programming mode. In order to 237 * access the EEPROM at all, we first have to set the 238 * EELOAD bit in the CHIPCFG2 register. 239 */ 240 CSR_SETBIT_1(sc, VGE_CHIPCFG2, VGE_CHIPCFG2_EELOAD); 241 CSR_SETBIT_1(sc, VGE_EECSR, VGE_EECSR_EMBP/*|VGE_EECSR_ECS*/); 242 243 /* Select the address of the word we want to read */ 244 CSR_WRITE_1(sc, VGE_EEADDR, addr); 245 246 /* Issue read command */ 247 CSR_SETBIT_1(sc, VGE_EECMD, VGE_EECMD_ERD); 248 249 /* Wait for the done bit to be set. */ 250 for (i = 0; i < VGE_TIMEOUT; i++) { 251 if (CSR_READ_1(sc, VGE_EECMD) & VGE_EECMD_EDONE) 252 break; 253 } 254 255 if (i == VGE_TIMEOUT) { 256 device_printf(sc->vge_dev, "EEPROM read timed out\n"); 257 *dest = 0; 258 return; 259 } 260 261 /* Read the result */ 262 word = CSR_READ_2(sc, VGE_EERDDAT); 263 264 /* Turn off EEPROM access mode. */ 265 CSR_CLRBIT_1(sc, VGE_EECSR, VGE_EECSR_EMBP/*|VGE_EECSR_ECS*/); 266 CSR_CLRBIT_1(sc, VGE_CHIPCFG2, VGE_CHIPCFG2_EELOAD); 267 268 *dest = word; 269 270 return; 271} 272#endif 273 274/* 275 * Read a sequence of words from the EEPROM. 276 */ 277static void 278vge_read_eeprom(sc, dest, off, cnt, swap) 279 struct vge_softc *sc; 280 caddr_t dest; 281 int off; 282 int cnt; 283 int swap; 284{ 285 int i; 286#ifdef VGE_EEPROM 287 u_int16_t word = 0, *ptr; 288 289 for (i = 0; i < cnt; i++) { 290 vge_eeprom_getword(sc, off + i, &word); 291 ptr = (u_int16_t *)(dest + (i * 2)); 292 if (swap) 293 *ptr = ntohs(word); 294 else 295 *ptr = word; 296 } 297#else 298 for (i = 0; i < ETHER_ADDR_LEN; i++) 299 dest[i] = CSR_READ_1(sc, VGE_PAR0 + i); 300#endif 301} 302 303static void 304vge_miipoll_stop(sc) 305 struct vge_softc *sc; 306{ 307 int i; 308 309 CSR_WRITE_1(sc, VGE_MIICMD, 0); 310 311 for (i = 0; i < VGE_TIMEOUT; i++) { 312 DELAY(1); 313 if (CSR_READ_1(sc, VGE_MIISTS) & VGE_MIISTS_IIDL) 314 break; 315 } 316 317 if (i == VGE_TIMEOUT) 318 device_printf(sc->vge_dev, "failed to idle MII autopoll\n"); 319 320 return; 321} 322 323static void 324vge_miipoll_start(sc) 325 struct vge_softc *sc; 326{ 327 int i; 328 329 /* First, make sure we're idle. */ 330 331 CSR_WRITE_1(sc, VGE_MIICMD, 0); 332 CSR_WRITE_1(sc, VGE_MIIADDR, VGE_MIIADDR_SWMPL); 333 334 for (i = 0; i < VGE_TIMEOUT; i++) { 335 DELAY(1); 336 if (CSR_READ_1(sc, VGE_MIISTS) & VGE_MIISTS_IIDL) 337 break; 338 } 339 340 if (i == VGE_TIMEOUT) { 341 device_printf(sc->vge_dev, "failed to idle MII autopoll\n"); 342 return; 343 } 344 345 /* Now enable auto poll mode. */ 346 347 CSR_WRITE_1(sc, VGE_MIICMD, VGE_MIICMD_MAUTO); 348 349 /* And make sure it started. */ 350 351 for (i = 0; i < VGE_TIMEOUT; i++) { 352 DELAY(1); 353 if ((CSR_READ_1(sc, VGE_MIISTS) & VGE_MIISTS_IIDL) == 0) 354 break; 355 } 356 357 if (i == VGE_TIMEOUT) 358 device_printf(sc->vge_dev, "failed to start MII autopoll\n"); 359 360 return; 361} 362 363static int 364vge_miibus_readreg(dev, phy, reg) 365 device_t dev; 366 int phy, reg; 367{ 368 struct vge_softc *sc; 369 int i; 370 u_int16_t rval = 0; 371 372 sc = device_get_softc(dev); 373 374 if (phy != (CSR_READ_1(sc, VGE_MIICFG) & 0x1F)) 375 return(0); 376 377 vge_miipoll_stop(sc); 378 379 /* Specify the register we want to read. */ 380 CSR_WRITE_1(sc, VGE_MIIADDR, reg); 381 382 /* Issue read command. */ 383 CSR_SETBIT_1(sc, VGE_MIICMD, VGE_MIICMD_RCMD); 384 385 /* Wait for the read command bit to self-clear. */ 386 for (i = 0; i < VGE_TIMEOUT; i++) { 387 DELAY(1); 388 if ((CSR_READ_1(sc, VGE_MIICMD) & VGE_MIICMD_RCMD) == 0) 389 break; 390 } 391 392 if (i == VGE_TIMEOUT) 393 device_printf(sc->vge_dev, "MII read timed out\n"); 394 else 395 rval = CSR_READ_2(sc, VGE_MIIDATA); 396 397 vge_miipoll_start(sc); 398 399 return (rval); 400} 401 402static int 403vge_miibus_writereg(dev, phy, reg, data) 404 device_t dev; 405 int phy, reg, data; 406{ 407 struct vge_softc *sc; 408 int i, rval = 0; 409 410 sc = device_get_softc(dev); 411 412 if (phy != (CSR_READ_1(sc, VGE_MIICFG) & 0x1F)) 413 return(0); 414 415 vge_miipoll_stop(sc); 416 417 /* Specify the register we want to write. */ 418 CSR_WRITE_1(sc, VGE_MIIADDR, reg); 419 420 /* Specify the data we want to write. */ 421 CSR_WRITE_2(sc, VGE_MIIDATA, data); 422 423 /* Issue write command. */ 424 CSR_SETBIT_1(sc, VGE_MIICMD, VGE_MIICMD_WCMD); 425 426 /* Wait for the write command bit to self-clear. */ 427 for (i = 0; i < VGE_TIMEOUT; i++) { 428 DELAY(1); 429 if ((CSR_READ_1(sc, VGE_MIICMD) & VGE_MIICMD_WCMD) == 0) 430 break; 431 } 432 433 if (i == VGE_TIMEOUT) { 434 device_printf(sc->vge_dev, "MII write timed out\n"); 435 rval = EIO; 436 } 437 438 vge_miipoll_start(sc); 439 440 return (rval); 441} 442 443static void 444vge_cam_clear(sc) 445 struct vge_softc *sc; 446{ 447 int i; 448 449 /* 450 * Turn off all the mask bits. This tells the chip 451 * that none of the entries in the CAM filter are valid. 452 * desired entries will be enabled as we fill the filter in. 453 */ 454 455 CSR_CLRBIT_1(sc, VGE_CAMCTL, VGE_CAMCTL_PAGESEL); 456 CSR_SETBIT_1(sc, VGE_CAMCTL, VGE_PAGESEL_CAMMASK); 457 CSR_WRITE_1(sc, VGE_CAMADDR, VGE_CAMADDR_ENABLE); 458 for (i = 0; i < 8; i++) 459 CSR_WRITE_1(sc, VGE_CAM0 + i, 0); 460 461 /* Clear the VLAN filter too. */ 462 463 CSR_WRITE_1(sc, VGE_CAMADDR, VGE_CAMADDR_ENABLE|VGE_CAMADDR_AVSEL|0); 464 for (i = 0; i < 8; i++) 465 CSR_WRITE_1(sc, VGE_CAM0 + i, 0); 466 467 CSR_WRITE_1(sc, VGE_CAMADDR, 0); 468 CSR_CLRBIT_1(sc, VGE_CAMCTL, VGE_CAMCTL_PAGESEL); 469 CSR_SETBIT_1(sc, VGE_CAMCTL, VGE_PAGESEL_MAR); 470 471 sc->vge_camidx = 0; 472 473 return; 474} 475 476static int 477vge_cam_set(sc, addr) 478 struct vge_softc *sc; 479 uint8_t *addr; 480{ 481 int i, error = 0; 482 483 if (sc->vge_camidx == VGE_CAM_MAXADDRS) 484 return(ENOSPC); 485 486 /* Select the CAM data page. */ 487 CSR_CLRBIT_1(sc, VGE_CAMCTL, VGE_CAMCTL_PAGESEL); 488 CSR_SETBIT_1(sc, VGE_CAMCTL, VGE_PAGESEL_CAMDATA); 489 490 /* Set the filter entry we want to update and enable writing. */ 491 CSR_WRITE_1(sc, VGE_CAMADDR, VGE_CAMADDR_ENABLE|sc->vge_camidx); 492 493 /* Write the address to the CAM registers */ 494 for (i = 0; i < ETHER_ADDR_LEN; i++) 495 CSR_WRITE_1(sc, VGE_CAM0 + i, addr[i]); 496 497 /* Issue a write command. */ 498 CSR_SETBIT_1(sc, VGE_CAMCTL, VGE_CAMCTL_WRITE); 499 500 /* Wake for it to clear. */ 501 for (i = 0; i < VGE_TIMEOUT; i++) { 502 DELAY(1); 503 if ((CSR_READ_1(sc, VGE_CAMCTL) & VGE_CAMCTL_WRITE) == 0) 504 break; 505 } 506 507 if (i == VGE_TIMEOUT) { 508 device_printf(sc->vge_dev, "setting CAM filter failed\n"); 509 error = EIO; 510 goto fail; 511 } 512 513 /* Select the CAM mask page. */ 514 CSR_CLRBIT_1(sc, VGE_CAMCTL, VGE_CAMCTL_PAGESEL); 515 CSR_SETBIT_1(sc, VGE_CAMCTL, VGE_PAGESEL_CAMMASK); 516 517 /* Set the mask bit that enables this filter. */ 518 CSR_SETBIT_1(sc, VGE_CAM0 + (sc->vge_camidx/8), 519 1<<(sc->vge_camidx & 7)); 520 521 sc->vge_camidx++; 522 523fail: 524 /* Turn off access to CAM. */ 525 CSR_WRITE_1(sc, VGE_CAMADDR, 0); 526 CSR_CLRBIT_1(sc, VGE_CAMCTL, VGE_CAMCTL_PAGESEL); 527 CSR_SETBIT_1(sc, VGE_CAMCTL, VGE_PAGESEL_MAR); 528 529 return (error); 530} 531 532/* 533 * Program the multicast filter. We use the 64-entry CAM filter 534 * for perfect filtering. If there's more than 64 multicast addresses, 535 * we use the hash filter instead. 536 */ 537static void 538vge_setmulti(sc) 539 struct vge_softc *sc; 540{ 541 struct ifnet *ifp; 542 int error = 0/*, h = 0*/; 543 struct ifmultiaddr *ifma; 544 u_int32_t h, hashes[2] = { 0, 0 }; 545 546 VGE_LOCK_ASSERT(sc); 547 548 ifp = sc->vge_ifp; 549 550 /* First, zot all the multicast entries. */ 551 vge_cam_clear(sc); 552 CSR_WRITE_4(sc, VGE_MAR0, 0); 553 CSR_WRITE_4(sc, VGE_MAR1, 0); 554 555 /* 556 * If the user wants allmulti or promisc mode, enable reception 557 * of all multicast frames. 558 */ 559 if (ifp->if_flags & IFF_ALLMULTI || ifp->if_flags & IFF_PROMISC) { 560 CSR_WRITE_4(sc, VGE_MAR0, 0xFFFFFFFF); 561 CSR_WRITE_4(sc, VGE_MAR1, 0xFFFFFFFF); 562 return; 563 } 564 565 /* Now program new ones */ 566 if_maddr_rlock(ifp); 567 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) { 568 if (ifma->ifma_addr->sa_family != AF_LINK) 569 continue; 570 error = vge_cam_set(sc, 571 LLADDR((struct sockaddr_dl *)ifma->ifma_addr)); 572 if (error) 573 break; 574 } 575 576 /* If there were too many addresses, use the hash filter. */ 577 if (error) { 578 vge_cam_clear(sc); 579 580 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) { 581 if (ifma->ifma_addr->sa_family != AF_LINK) 582 continue; 583 h = ether_crc32_be(LLADDR((struct sockaddr_dl *) 584 ifma->ifma_addr), ETHER_ADDR_LEN) >> 26; 585 if (h < 32) 586 hashes[0] |= (1 << h); 587 else 588 hashes[1] |= (1 << (h - 32)); 589 } 590 591 CSR_WRITE_4(sc, VGE_MAR0, hashes[0]); 592 CSR_WRITE_4(sc, VGE_MAR1, hashes[1]); 593 } 594 if_maddr_runlock(ifp); 595 596 return; 597} 598 599static void 600vge_reset(sc) 601 struct vge_softc *sc; 602{ 603 int i; 604 605 CSR_WRITE_1(sc, VGE_CRS1, VGE_CR1_SOFTRESET); 606 607 for (i = 0; i < VGE_TIMEOUT; i++) { 608 DELAY(5); 609 if ((CSR_READ_1(sc, VGE_CRS1) & VGE_CR1_SOFTRESET) == 0) 610 break; 611 } 612 613 if (i == VGE_TIMEOUT) { 614 device_printf(sc->vge_dev, "soft reset timed out"); 615 CSR_WRITE_1(sc, VGE_CRS3, VGE_CR3_STOP_FORCE); 616 DELAY(2000); 617 } 618 619 DELAY(5000); 620 621 CSR_SETBIT_1(sc, VGE_EECSR, VGE_EECSR_RELOAD); 622 623 for (i = 0; i < VGE_TIMEOUT; i++) { 624 DELAY(5); 625 if ((CSR_READ_1(sc, VGE_EECSR) & VGE_EECSR_RELOAD) == 0) 626 break; 627 } 628 629 if (i == VGE_TIMEOUT) { 630 device_printf(sc->vge_dev, "EEPROM reload timed out\n"); 631 return; 632 } 633 634 CSR_CLRBIT_1(sc, VGE_CHIPCFG0, VGE_CHIPCFG0_PACPI); 635 636 return; 637} 638 639/* 640 * Probe for a VIA gigabit chip. Check the PCI vendor and device 641 * IDs against our list and return a device name if we find a match. 642 */ 643static int 644vge_probe(dev) 645 device_t dev; 646{ 647 struct vge_type *t; 648 649 t = vge_devs; 650 651 while (t->vge_name != NULL) { 652 if ((pci_get_vendor(dev) == t->vge_vid) && 653 (pci_get_device(dev) == t->vge_did)) { 654 device_set_desc(dev, t->vge_name); 655 return (BUS_PROBE_DEFAULT); 656 } 657 t++; 658 } 659 660 return (ENXIO); 661} 662 663/* 664 * Map a single buffer address. 665 */ 666 667struct vge_dmamap_arg { 668 bus_addr_t vge_busaddr; 669}; 670 671static void 672vge_dmamap_cb(arg, segs, nsegs, error) 673 void *arg; 674 bus_dma_segment_t *segs; 675 int nsegs; 676 int error; 677{ 678 struct vge_dmamap_arg *ctx; 679 680 if (error != 0) 681 return; 682 683 KASSERT(nsegs == 1, ("%s: %d segments returned!", __func__, nsegs)); 684 685 ctx = (struct vge_dmamap_arg *)arg; 686 ctx->vge_busaddr = segs[0].ds_addr; 687} 688 689static int 690vge_dma_alloc(sc) 691 struct vge_softc *sc; 692{ 693 struct vge_dmamap_arg ctx; 694 struct vge_txdesc *txd; 695 struct vge_rxdesc *rxd; 696 bus_addr_t lowaddr, tx_ring_end, rx_ring_end; 697 int error, i; 698 699 lowaddr = BUS_SPACE_MAXADDR; 700 701again: 702 /* Create parent ring tag. */ 703 error = bus_dma_tag_create(bus_get_dma_tag(sc->vge_dev),/* parent */ 704 1, 0, /* algnmnt, boundary */ 705 lowaddr, /* lowaddr */ 706 BUS_SPACE_MAXADDR, /* highaddr */ 707 NULL, NULL, /* filter, filterarg */ 708 BUS_SPACE_MAXSIZE_32BIT, /* maxsize */ 709 0, /* nsegments */ 710 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 711 0, /* flags */ 712 NULL, NULL, /* lockfunc, lockarg */ 713 &sc->vge_cdata.vge_ring_tag); 714 if (error != 0) { 715 device_printf(sc->vge_dev, 716 "could not create parent DMA tag.\n"); 717 goto fail; 718 } 719 720 /* Create tag for Tx ring. */ 721 error = bus_dma_tag_create(sc->vge_cdata.vge_ring_tag,/* parent */ 722 VGE_TX_RING_ALIGN, 0, /* algnmnt, boundary */ 723 BUS_SPACE_MAXADDR, /* lowaddr */ 724 BUS_SPACE_MAXADDR, /* highaddr */ 725 NULL, NULL, /* filter, filterarg */ 726 VGE_TX_LIST_SZ, /* maxsize */ 727 1, /* nsegments */ 728 VGE_TX_LIST_SZ, /* maxsegsize */ 729 0, /* flags */ 730 NULL, NULL, /* lockfunc, lockarg */ 731 &sc->vge_cdata.vge_tx_ring_tag); 732 if (error != 0) { 733 device_printf(sc->vge_dev, 734 "could not allocate Tx ring DMA tag.\n"); 735 goto fail; 736 } 737 738 /* Create tag for Rx ring. */ 739 error = bus_dma_tag_create(sc->vge_cdata.vge_ring_tag,/* parent */ 740 VGE_RX_RING_ALIGN, 0, /* algnmnt, boundary */ 741 BUS_SPACE_MAXADDR, /* lowaddr */ 742 BUS_SPACE_MAXADDR, /* highaddr */ 743 NULL, NULL, /* filter, filterarg */ 744 VGE_RX_LIST_SZ, /* maxsize */ 745 1, /* nsegments */ 746 VGE_RX_LIST_SZ, /* maxsegsize */ 747 0, /* flags */ 748 NULL, NULL, /* lockfunc, lockarg */ 749 &sc->vge_cdata.vge_rx_ring_tag); 750 if (error != 0) { 751 device_printf(sc->vge_dev, 752 "could not allocate Rx ring DMA tag.\n"); 753 goto fail; 754 } 755 756 /* Allocate DMA'able memory and load the DMA map for Tx ring. */ 757 error = bus_dmamem_alloc(sc->vge_cdata.vge_tx_ring_tag, 758 (void **)&sc->vge_rdata.vge_tx_ring, 759 BUS_DMA_WAITOK | BUS_DMA_ZERO | BUS_DMA_COHERENT, 760 &sc->vge_cdata.vge_tx_ring_map); 761 if (error != 0) { 762 device_printf(sc->vge_dev, 763 "could not allocate DMA'able memory for Tx ring.\n"); 764 goto fail; 765 } 766 767 ctx.vge_busaddr = 0; 768 error = bus_dmamap_load(sc->vge_cdata.vge_tx_ring_tag, 769 sc->vge_cdata.vge_tx_ring_map, sc->vge_rdata.vge_tx_ring, 770 VGE_TX_LIST_SZ, vge_dmamap_cb, &ctx, BUS_DMA_NOWAIT); 771 if (error != 0 || ctx.vge_busaddr == 0) { 772 device_printf(sc->vge_dev, 773 "could not load DMA'able memory for Tx ring.\n"); 774 goto fail; 775 } 776 sc->vge_rdata.vge_tx_ring_paddr = ctx.vge_busaddr; 777 778 /* Allocate DMA'able memory and load the DMA map for Rx ring. */ 779 error = bus_dmamem_alloc(sc->vge_cdata.vge_rx_ring_tag, 780 (void **)&sc->vge_rdata.vge_rx_ring, 781 BUS_DMA_WAITOK | BUS_DMA_ZERO | BUS_DMA_COHERENT, 782 &sc->vge_cdata.vge_rx_ring_map); 783 if (error != 0) { 784 device_printf(sc->vge_dev, 785 "could not allocate DMA'able memory for Rx ring.\n"); 786 goto fail; 787 } 788 789 ctx.vge_busaddr = 0; 790 error = bus_dmamap_load(sc->vge_cdata.vge_rx_ring_tag, 791 sc->vge_cdata.vge_rx_ring_map, sc->vge_rdata.vge_rx_ring, 792 VGE_RX_LIST_SZ, vge_dmamap_cb, &ctx, BUS_DMA_NOWAIT); 793 if (error != 0 || ctx.vge_busaddr == 0) { 794 device_printf(sc->vge_dev, 795 "could not load DMA'able memory for Rx ring.\n"); 796 goto fail; 797 } 798 sc->vge_rdata.vge_rx_ring_paddr = ctx.vge_busaddr; 799 800 /* Tx/Rx descriptor queue should reside within 4GB boundary. */ 801 tx_ring_end = sc->vge_rdata.vge_tx_ring_paddr + VGE_TX_LIST_SZ; 802 rx_ring_end = sc->vge_rdata.vge_rx_ring_paddr + VGE_RX_LIST_SZ; 803 if ((VGE_ADDR_HI(tx_ring_end) != 804 VGE_ADDR_HI(sc->vge_rdata.vge_tx_ring_paddr)) || 805 (VGE_ADDR_HI(rx_ring_end) != 806 VGE_ADDR_HI(sc->vge_rdata.vge_rx_ring_paddr)) || 807 VGE_ADDR_HI(tx_ring_end) != VGE_ADDR_HI(rx_ring_end)) { 808 device_printf(sc->vge_dev, "4GB boundary crossed, " 809 "switching to 32bit DMA address mode.\n"); 810 vge_dma_free(sc); 811 /* Limit DMA address space to 32bit and try again. */ 812 lowaddr = BUS_SPACE_MAXADDR_32BIT; 813 goto again; 814 } 815 816 /* Create parent buffer tag. */ 817 error = bus_dma_tag_create(bus_get_dma_tag(sc->vge_dev),/* parent */ 818 1, 0, /* algnmnt, boundary */ 819 VGE_BUF_DMA_MAXADDR, /* lowaddr */ 820 BUS_SPACE_MAXADDR, /* highaddr */ 821 NULL, NULL, /* filter, filterarg */ 822 BUS_SPACE_MAXSIZE_32BIT, /* maxsize */ 823 0, /* nsegments */ 824 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 825 0, /* flags */ 826 NULL, NULL, /* lockfunc, lockarg */ 827 &sc->vge_cdata.vge_buffer_tag); 828 if (error != 0) { 829 device_printf(sc->vge_dev, 830 "could not create parent buffer DMA tag.\n"); 831 goto fail; 832 } 833 834 /* Create tag for Tx buffers. */ 835 error = bus_dma_tag_create(sc->vge_cdata.vge_buffer_tag,/* parent */ 836 1, 0, /* algnmnt, boundary */ 837 BUS_SPACE_MAXADDR, /* lowaddr */ 838 BUS_SPACE_MAXADDR, /* highaddr */ 839 NULL, NULL, /* filter, filterarg */ 840 MCLBYTES * VGE_MAXTXSEGS, /* maxsize */ 841 VGE_MAXTXSEGS, /* nsegments */ 842 MCLBYTES, /* maxsegsize */ 843 0, /* flags */ 844 NULL, NULL, /* lockfunc, lockarg */ 845 &sc->vge_cdata.vge_tx_tag); 846 if (error != 0) { 847 device_printf(sc->vge_dev, "could not create Tx DMA tag.\n"); 848 goto fail; 849 } 850 851 /* Create tag for Rx buffers. */ 852 error = bus_dma_tag_create(sc->vge_cdata.vge_buffer_tag,/* parent */ 853 VGE_RX_BUF_ALIGN, 0, /* algnmnt, boundary */ 854 BUS_SPACE_MAXADDR, /* lowaddr */ 855 BUS_SPACE_MAXADDR, /* highaddr */ 856 NULL, NULL, /* filter, filterarg */ 857 MCLBYTES, /* maxsize */ 858 1, /* nsegments */ 859 MCLBYTES, /* maxsegsize */ 860 0, /* flags */ 861 NULL, NULL, /* lockfunc, lockarg */ 862 &sc->vge_cdata.vge_rx_tag); 863 if (error != 0) { 864 device_printf(sc->vge_dev, "could not create Rx DMA tag.\n"); 865 goto fail; 866 } 867 868 /* Create DMA maps for Tx buffers. */ 869 for (i = 0; i < VGE_TX_DESC_CNT; i++) { 870 txd = &sc->vge_cdata.vge_txdesc[i]; 871 txd->tx_m = NULL; 872 txd->tx_dmamap = NULL; 873 error = bus_dmamap_create(sc->vge_cdata.vge_tx_tag, 0, 874 &txd->tx_dmamap); 875 if (error != 0) { 876 device_printf(sc->vge_dev, 877 "could not create Tx dmamap.\n"); 878 goto fail; 879 } 880 } 881 /* Create DMA maps for Rx buffers. */ 882 if ((error = bus_dmamap_create(sc->vge_cdata.vge_rx_tag, 0, 883 &sc->vge_cdata.vge_rx_sparemap)) != 0) { 884 device_printf(sc->vge_dev, 885 "could not create spare Rx dmamap.\n"); 886 goto fail; 887 } 888 for (i = 0; i < VGE_RX_DESC_CNT; i++) { 889 rxd = &sc->vge_cdata.vge_rxdesc[i]; 890 rxd->rx_m = NULL; 891 rxd->rx_dmamap = NULL; 892 error = bus_dmamap_create(sc->vge_cdata.vge_rx_tag, 0, 893 &rxd->rx_dmamap); 894 if (error != 0) { 895 device_printf(sc->vge_dev, 896 "could not create Rx dmamap.\n"); 897 goto fail; 898 } 899 } 900 901fail: 902 return (error); 903} 904 905static void 906vge_dma_free(sc) 907 struct vge_softc *sc; 908{ 909 struct vge_txdesc *txd; 910 struct vge_rxdesc *rxd; 911 int i; 912 913 /* Tx ring. */ 914 if (sc->vge_cdata.vge_tx_ring_tag != NULL) { 915 if (sc->vge_cdata.vge_tx_ring_map) 916 bus_dmamap_unload(sc->vge_cdata.vge_tx_ring_tag, 917 sc->vge_cdata.vge_tx_ring_map); 918 if (sc->vge_cdata.vge_tx_ring_map && 919 sc->vge_rdata.vge_tx_ring) 920 bus_dmamem_free(sc->vge_cdata.vge_tx_ring_tag, 921 sc->vge_rdata.vge_tx_ring, 922 sc->vge_cdata.vge_tx_ring_map); 923 sc->vge_rdata.vge_tx_ring = NULL; 924 sc->vge_cdata.vge_tx_ring_map = NULL; 925 bus_dma_tag_destroy(sc->vge_cdata.vge_tx_ring_tag); 926 sc->vge_cdata.vge_tx_ring_tag = NULL; 927 } 928 /* Rx ring. */ 929 if (sc->vge_cdata.vge_rx_ring_tag != NULL) { 930 if (sc->vge_cdata.vge_rx_ring_map) 931 bus_dmamap_unload(sc->vge_cdata.vge_rx_ring_tag, 932 sc->vge_cdata.vge_rx_ring_map); 933 if (sc->vge_cdata.vge_rx_ring_map && 934 sc->vge_rdata.vge_rx_ring) 935 bus_dmamem_free(sc->vge_cdata.vge_rx_ring_tag, 936 sc->vge_rdata.vge_rx_ring, 937 sc->vge_cdata.vge_rx_ring_map); 938 sc->vge_rdata.vge_rx_ring = NULL; 939 sc->vge_cdata.vge_rx_ring_map = NULL; 940 bus_dma_tag_destroy(sc->vge_cdata.vge_rx_ring_tag); 941 sc->vge_cdata.vge_rx_ring_tag = NULL; 942 } 943 /* Tx buffers. */ 944 if (sc->vge_cdata.vge_tx_tag != NULL) { 945 for (i = 0; i < VGE_TX_DESC_CNT; i++) { 946 txd = &sc->vge_cdata.vge_txdesc[i]; 947 if (txd->tx_dmamap != NULL) { 948 bus_dmamap_destroy(sc->vge_cdata.vge_tx_tag, 949 txd->tx_dmamap); 950 txd->tx_dmamap = NULL; 951 } 952 } 953 bus_dma_tag_destroy(sc->vge_cdata.vge_tx_tag); 954 sc->vge_cdata.vge_tx_tag = NULL; 955 } 956 /* Rx buffers. */ 957 if (sc->vge_cdata.vge_rx_tag != NULL) { 958 for (i = 0; i < VGE_RX_DESC_CNT; i++) { 959 rxd = &sc->vge_cdata.vge_rxdesc[i]; 960 if (rxd->rx_dmamap != NULL) { 961 bus_dmamap_destroy(sc->vge_cdata.vge_rx_tag, 962 rxd->rx_dmamap); 963 rxd->rx_dmamap = NULL; 964 } 965 } 966 if (sc->vge_cdata.vge_rx_sparemap != NULL) { 967 bus_dmamap_destroy(sc->vge_cdata.vge_rx_tag, 968 sc->vge_cdata.vge_rx_sparemap); 969 sc->vge_cdata.vge_rx_sparemap = NULL; 970 } 971 bus_dma_tag_destroy(sc->vge_cdata.vge_rx_tag); 972 sc->vge_cdata.vge_rx_tag = NULL; 973 } 974 975 if (sc->vge_cdata.vge_buffer_tag != NULL) { 976 bus_dma_tag_destroy(sc->vge_cdata.vge_buffer_tag); 977 sc->vge_cdata.vge_buffer_tag = NULL; 978 } 979 if (sc->vge_cdata.vge_ring_tag != NULL) { 980 bus_dma_tag_destroy(sc->vge_cdata.vge_ring_tag); 981 sc->vge_cdata.vge_ring_tag = NULL; 982 } 983} 984 985/* 986 * Attach the interface. Allocate softc structures, do ifmedia 987 * setup and ethernet/BPF attach. 988 */ 989static int 990vge_attach(dev) 991 device_t dev; 992{ 993 u_char eaddr[ETHER_ADDR_LEN]; 994 struct vge_softc *sc; 995 struct ifnet *ifp; 996 int error = 0, rid; 997 998 sc = device_get_softc(dev); 999 sc->vge_dev = dev; 1000 1001 mtx_init(&sc->vge_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK, 1002 MTX_DEF); 1003 callout_init_mtx(&sc->vge_watchdog, &sc->vge_mtx, 0); 1004 1005 /* 1006 * Map control/status registers. 1007 */ 1008 pci_enable_busmaster(dev); 1009 1010 rid = PCIR_BAR(1); 1011 sc->vge_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, 1012 RF_ACTIVE); 1013 1014 if (sc->vge_res == NULL) { 1015 device_printf(dev, "couldn't map ports/memory\n"); 1016 error = ENXIO; 1017 goto fail; 1018 } 1019 1020 /* Allocate interrupt */ 1021 rid = 0; 1022 sc->vge_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, 1023 RF_SHAREABLE | RF_ACTIVE); 1024 1025 if (sc->vge_irq == NULL) { 1026 device_printf(dev, "couldn't map interrupt\n"); 1027 error = ENXIO; 1028 goto fail; 1029 } 1030 1031 /* Reset the adapter. */ 1032 vge_reset(sc); 1033 1034 /* 1035 * Get station address from the EEPROM. 1036 */ 1037 vge_read_eeprom(sc, (caddr_t)eaddr, VGE_EE_EADDR, 3, 0); 1038 1039 error = vge_dma_alloc(sc); 1040 if (error) 1041 goto fail; 1042 1043 ifp = sc->vge_ifp = if_alloc(IFT_ETHER); 1044 if (ifp == NULL) { 1045 device_printf(dev, "can not if_alloc()\n"); 1046 error = ENOSPC; 1047 goto fail; 1048 } 1049 1050 /* Do MII setup */ 1051 if (mii_phy_probe(dev, &sc->vge_miibus, 1052 vge_ifmedia_upd, vge_ifmedia_sts)) { 1053 device_printf(dev, "MII without any phy!\n"); 1054 error = ENXIO; 1055 goto fail; 1056 } 1057 1058 ifp->if_softc = sc; 1059 if_initname(ifp, device_get_name(dev), device_get_unit(dev)); 1060 ifp->if_mtu = ETHERMTU; 1061 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 1062 ifp->if_ioctl = vge_ioctl; 1063 ifp->if_capabilities = IFCAP_VLAN_MTU; 1064 ifp->if_start = vge_start; 1065 ifp->if_hwassist = VGE_CSUM_FEATURES; 1066 ifp->if_capabilities |= IFCAP_HWCSUM|IFCAP_VLAN_HWTAGGING; 1067 ifp->if_capenable = ifp->if_capabilities; 1068#ifdef DEVICE_POLLING 1069 ifp->if_capabilities |= IFCAP_POLLING; 1070#endif 1071 ifp->if_init = vge_init; 1072 IFQ_SET_MAXLEN(&ifp->if_snd, VGE_IFQ_MAXLEN); 1073 ifp->if_snd.ifq_drv_maxlen = VGE_IFQ_MAXLEN; 1074 IFQ_SET_READY(&ifp->if_snd); 1075 1076 /* 1077 * Call MI attach routine. 1078 */ 1079 ether_ifattach(ifp, eaddr); 1080 1081 /* Hook interrupt last to avoid having to lock softc */ 1082 error = bus_setup_intr(dev, sc->vge_irq, INTR_TYPE_NET|INTR_MPSAFE, 1083 NULL, vge_intr, sc, &sc->vge_intrhand); 1084 1085 if (error) { 1086 device_printf(dev, "couldn't set up irq\n"); 1087 ether_ifdetach(ifp); 1088 goto fail; 1089 } 1090 1091fail: 1092 if (error) 1093 vge_detach(dev); 1094 1095 return (error); 1096} 1097 1098/* 1099 * Shutdown hardware and free up resources. This can be called any 1100 * time after the mutex has been initialized. It is called in both 1101 * the error case in attach and the normal detach case so it needs 1102 * to be careful about only freeing resources that have actually been 1103 * allocated. 1104 */ 1105static int 1106vge_detach(dev) 1107 device_t dev; 1108{ 1109 struct vge_softc *sc; 1110 struct ifnet *ifp; 1111 1112 sc = device_get_softc(dev); 1113 KASSERT(mtx_initialized(&sc->vge_mtx), ("vge mutex not initialized")); 1114 ifp = sc->vge_ifp; 1115 1116#ifdef DEVICE_POLLING 1117 if (ifp->if_capenable & IFCAP_POLLING) 1118 ether_poll_deregister(ifp); 1119#endif 1120 1121 /* These should only be active if attach succeeded */ 1122 if (device_is_attached(dev)) { 1123 ether_ifdetach(ifp); 1124 VGE_LOCK(sc); 1125 vge_stop(sc); 1126 VGE_UNLOCK(sc); 1127 callout_drain(&sc->vge_watchdog); 1128 } 1129 if (sc->vge_miibus) 1130 device_delete_child(dev, sc->vge_miibus); 1131 bus_generic_detach(dev); 1132 1133 if (sc->vge_intrhand) 1134 bus_teardown_intr(dev, sc->vge_irq, sc->vge_intrhand); 1135 if (sc->vge_irq) 1136 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->vge_irq); 1137 if (sc->vge_res) 1138 bus_release_resource(dev, SYS_RES_MEMORY, 1139 PCIR_BAR(1), sc->vge_res); 1140 if (ifp) 1141 if_free(ifp); 1142 1143 vge_dma_free(sc); 1144 mtx_destroy(&sc->vge_mtx); 1145 1146 return (0); 1147} 1148 1149static void 1150vge_discard_rxbuf(sc, prod) 1151 struct vge_softc *sc; 1152 int prod; 1153{ 1154 struct vge_rxdesc *rxd; 1155 int i; 1156 1157 rxd = &sc->vge_cdata.vge_rxdesc[prod]; 1158 rxd->rx_desc->vge_sts = 0; 1159 rxd->rx_desc->vge_ctl = 0; 1160 1161 /* 1162 * Note: the manual fails to document the fact that for 1163 * proper opration, the driver needs to replentish the RX 1164 * DMA ring 4 descriptors at a time (rather than one at a 1165 * time, like most chips). We can allocate the new buffers 1166 * but we should not set the OWN bits until we're ready 1167 * to hand back 4 of them in one shot. 1168 */ 1169 if ((prod % VGE_RXCHUNK) == (VGE_RXCHUNK - 1)) { 1170 for (i = VGE_RXCHUNK; i > 0; i--) { 1171 rxd->rx_desc->vge_sts = htole32(VGE_RDSTS_OWN); 1172 rxd = rxd->rxd_prev; 1173 } 1174 sc->vge_cdata.vge_rx_commit += VGE_RXCHUNK; 1175 } 1176} 1177 1178static int 1179vge_newbuf(sc, prod) 1180 struct vge_softc *sc; 1181 int prod; 1182{ 1183 struct vge_rxdesc *rxd; 1184 struct mbuf *m; 1185 bus_dma_segment_t segs[1]; 1186 bus_dmamap_t map; 1187 int i, nsegs; 1188 1189 m = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR); 1190 if (m == NULL) 1191 return (ENOBUFS); 1192 /* 1193 * This is part of an evil trick to deal with strict-alignment 1194 * architectures. The VIA chip requires RX buffers to be aligned 1195 * on 32-bit boundaries, but that will hose strict-alignment 1196 * architectures. To get around this, we leave some empty space 1197 * at the start of each buffer and for non-strict-alignment hosts, 1198 * we copy the buffer back two bytes to achieve word alignment. 1199 * This is slightly more efficient than allocating a new buffer, 1200 * copying the contents, and discarding the old buffer. 1201 */ 1202 m->m_len = m->m_pkthdr.len = MCLBYTES; 1203 m_adj(m, VGE_RX_BUF_ALIGN); 1204 1205 if (bus_dmamap_load_mbuf_sg(sc->vge_cdata.vge_rx_tag, 1206 sc->vge_cdata.vge_rx_sparemap, m, segs, &nsegs, 0) != 0) { 1207 m_freem(m); 1208 return (ENOBUFS); 1209 } 1210 KASSERT(nsegs == 1, ("%s: %d segments returned!", __func__, nsegs)); 1211 1212 rxd = &sc->vge_cdata.vge_rxdesc[prod]; 1213 if (rxd->rx_m != NULL) { 1214 bus_dmamap_sync(sc->vge_cdata.vge_rx_tag, rxd->rx_dmamap, 1215 BUS_DMASYNC_POSTREAD); 1216 bus_dmamap_unload(sc->vge_cdata.vge_rx_tag, rxd->rx_dmamap); 1217 } 1218 map = rxd->rx_dmamap; 1219 rxd->rx_dmamap = sc->vge_cdata.vge_rx_sparemap; 1220 sc->vge_cdata.vge_rx_sparemap = map; 1221 bus_dmamap_sync(sc->vge_cdata.vge_rx_tag, rxd->rx_dmamap, 1222 BUS_DMASYNC_PREREAD); 1223 rxd->rx_m = m; 1224 1225 rxd->rx_desc->vge_sts = 0; 1226 rxd->rx_desc->vge_ctl = 0; 1227 rxd->rx_desc->vge_addrlo = htole32(VGE_ADDR_LO(segs[0].ds_addr)); 1228 rxd->rx_desc->vge_addrhi = htole32(VGE_ADDR_HI(segs[0].ds_addr) | 1229 (VGE_BUFLEN(segs[0].ds_len) << 16) | VGE_RXDESC_I); 1230 1231 /* 1232 * Note: the manual fails to document the fact that for 1233 * proper operation, the driver needs to replenish the RX 1234 * DMA ring 4 descriptors at a time (rather than one at a 1235 * time, like most chips). We can allocate the new buffers 1236 * but we should not set the OWN bits until we're ready 1237 * to hand back 4 of them in one shot. 1238 */ 1239 if ((prod % VGE_RXCHUNK) == (VGE_RXCHUNK - 1)) { 1240 for (i = VGE_RXCHUNK; i > 0; i--) { 1241 rxd->rx_desc->vge_sts = htole32(VGE_RDSTS_OWN); 1242 rxd = rxd->rxd_prev; 1243 } 1244 sc->vge_cdata.vge_rx_commit += VGE_RXCHUNK; 1245 } 1246 1247 return (0); 1248} 1249 1250static int 1251vge_tx_list_init(sc) 1252 struct vge_softc *sc; 1253{ 1254 struct vge_ring_data *rd; 1255 struct vge_txdesc *txd; 1256 int i; 1257 1258 VGE_LOCK_ASSERT(sc); 1259 1260 sc->vge_cdata.vge_tx_prodidx = 0; 1261 sc->vge_cdata.vge_tx_considx = 0; 1262 sc->vge_cdata.vge_tx_cnt = 0; 1263 1264 rd = &sc->vge_rdata; 1265 bzero(rd->vge_tx_ring, VGE_TX_LIST_SZ); 1266 for (i = 0; i < VGE_TX_DESC_CNT; i++) { 1267 txd = &sc->vge_cdata.vge_txdesc[i]; 1268 txd->tx_m = NULL; 1269 txd->tx_desc = &rd->vge_tx_ring[i]; 1270 } 1271 1272 bus_dmamap_sync(sc->vge_cdata.vge_tx_ring_tag, 1273 sc->vge_cdata.vge_tx_ring_map, 1274 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1275 1276 return (0); 1277} 1278 1279static int 1280vge_rx_list_init(sc) 1281 struct vge_softc *sc; 1282{ 1283 struct vge_ring_data *rd; 1284 struct vge_rxdesc *rxd; 1285 int i; 1286 1287 VGE_LOCK_ASSERT(sc); 1288 1289 sc->vge_cdata.vge_rx_prodidx = 0; 1290 sc->vge_cdata.vge_head = NULL; 1291 sc->vge_cdata.vge_tail = NULL; 1292 sc->vge_cdata.vge_rx_commit = 0; 1293 1294 rd = &sc->vge_rdata; 1295 bzero(rd->vge_rx_ring, VGE_RX_LIST_SZ); 1296 for (i = 0; i < VGE_RX_DESC_CNT; i++) { 1297 rxd = &sc->vge_cdata.vge_rxdesc[i]; 1298 rxd->rx_m = NULL; 1299 rxd->rx_desc = &rd->vge_rx_ring[i]; 1300 if (i == 0) 1301 rxd->rxd_prev = 1302 &sc->vge_cdata.vge_rxdesc[VGE_RX_DESC_CNT - 1]; 1303 else 1304 rxd->rxd_prev = &sc->vge_cdata.vge_rxdesc[i - 1]; 1305 if (vge_newbuf(sc, i) != 0) 1306 return (ENOBUFS); 1307 } 1308 1309 bus_dmamap_sync(sc->vge_cdata.vge_rx_ring_tag, 1310 sc->vge_cdata.vge_rx_ring_map, 1311 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1312 1313 sc->vge_cdata.vge_rx_commit = 0; 1314 1315 return (0); 1316} 1317 1318static void 1319vge_freebufs(sc) 1320 struct vge_softc *sc; 1321{ 1322 struct vge_txdesc *txd; 1323 struct vge_rxdesc *rxd; 1324 struct ifnet *ifp; 1325 int i; 1326 1327 VGE_LOCK_ASSERT(sc); 1328 1329 ifp = sc->vge_ifp; 1330 /* 1331 * Free RX and TX mbufs still in the queues. 1332 */ 1333 for (i = 0; i < VGE_RX_DESC_CNT; i++) { 1334 rxd = &sc->vge_cdata.vge_rxdesc[i]; 1335 if (rxd->rx_m != NULL) { 1336 bus_dmamap_sync(sc->vge_cdata.vge_rx_tag, 1337 rxd->rx_dmamap, BUS_DMASYNC_POSTREAD); 1338 bus_dmamap_unload(sc->vge_cdata.vge_rx_tag, 1339 rxd->rx_dmamap); 1340 m_freem(rxd->rx_m); 1341 rxd->rx_m = NULL; 1342 } 1343 } 1344 1345 for (i = 0; i < VGE_TX_DESC_CNT; i++) { 1346 txd = &sc->vge_cdata.vge_txdesc[i]; 1347 if (txd->tx_m != NULL) { 1348 bus_dmamap_sync(sc->vge_cdata.vge_tx_tag, 1349 txd->tx_dmamap, BUS_DMASYNC_POSTWRITE); 1350 bus_dmamap_unload(sc->vge_cdata.vge_tx_tag, 1351 txd->tx_dmamap); 1352 m_freem(txd->tx_m); 1353 txd->tx_m = NULL; 1354 ifp->if_oerrors++; 1355 } 1356 } 1357} 1358 1359#ifndef __NO_STRICT_ALIGNMENT 1360static __inline void 1361vge_fixup_rx(m) 1362 struct mbuf *m; 1363{ 1364 int i; 1365 uint16_t *src, *dst; 1366 1367 src = mtod(m, uint16_t *); 1368 dst = src - 1; 1369 1370 for (i = 0; i < (m->m_len / sizeof(uint16_t) + 1); i++) 1371 *dst++ = *src++; 1372 1373 m->m_data -= ETHER_ALIGN; 1374} 1375#endif 1376 1377/* 1378 * RX handler. We support the reception of jumbo frames that have 1379 * been fragmented across multiple 2K mbuf cluster buffers. 1380 */ 1381static int 1382vge_rxeof(sc, count) 1383 struct vge_softc *sc; 1384 int count; 1385{ 1386 struct mbuf *m; 1387 struct ifnet *ifp; 1388 int prod, prog, total_len; 1389 struct vge_rxdesc *rxd; 1390 struct vge_rx_desc *cur_rx; 1391 uint32_t rxstat, rxctl; 1392 1393 VGE_LOCK_ASSERT(sc); 1394 1395 ifp = sc->vge_ifp; 1396 1397 bus_dmamap_sync(sc->vge_cdata.vge_rx_ring_tag, 1398 sc->vge_cdata.vge_rx_ring_map, 1399 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 1400 1401 prod = sc->vge_cdata.vge_rx_prodidx; 1402 for (prog = 0; count > 0 && 1403 (ifp->if_drv_flags & IFF_DRV_RUNNING) != 0; 1404 VGE_RX_DESC_INC(prod)) { 1405 cur_rx = &sc->vge_rdata.vge_rx_ring[prod]; 1406 rxstat = le32toh(cur_rx->vge_sts); 1407 if ((rxstat & VGE_RDSTS_OWN) != 0) 1408 break; 1409 count--; 1410 prog++; 1411 rxctl = le32toh(cur_rx->vge_ctl); 1412 total_len = VGE_RXBYTES(rxstat); 1413 rxd = &sc->vge_cdata.vge_rxdesc[prod]; 1414 m = rxd->rx_m; 1415 1416 /* 1417 * If the 'start of frame' bit is set, this indicates 1418 * either the first fragment in a multi-fragment receive, 1419 * or an intermediate fragment. Either way, we want to 1420 * accumulate the buffers. 1421 */ 1422 if ((rxstat & VGE_RXPKT_SOF) != 0) { 1423 if (vge_newbuf(sc, prod) != 0) { 1424 ifp->if_iqdrops++; 1425 VGE_CHAIN_RESET(sc); 1426 vge_discard_rxbuf(sc, prod); 1427 continue; 1428 } 1429 m->m_len = MCLBYTES - VGE_RX_BUF_ALIGN; 1430 if (sc->vge_cdata.vge_head == NULL) { 1431 sc->vge_cdata.vge_head = m; 1432 sc->vge_cdata.vge_tail = m; 1433 } else { 1434 m->m_flags &= ~M_PKTHDR; 1435 sc->vge_cdata.vge_tail->m_next = m; 1436 sc->vge_cdata.vge_tail = m; 1437 } 1438 continue; 1439 } 1440 1441 /* 1442 * Bad/error frames will have the RXOK bit cleared. 1443 * However, there's one error case we want to allow: 1444 * if a VLAN tagged frame arrives and the chip can't 1445 * match it against the CAM filter, it considers this 1446 * a 'VLAN CAM filter miss' and clears the 'RXOK' bit. 1447 * We don't want to drop the frame though: our VLAN 1448 * filtering is done in software. 1449 * We also want to receive bad-checksummed frames and 1450 * and frames with bad-length. 1451 */ 1452 if ((rxstat & VGE_RDSTS_RXOK) == 0 && 1453 (rxstat & (VGE_RDSTS_VIDM | VGE_RDSTS_RLERR | 1454 VGE_RDSTS_CSUMERR)) == 0) { 1455 ifp->if_ierrors++; 1456 /* 1457 * If this is part of a multi-fragment packet, 1458 * discard all the pieces. 1459 */ 1460 VGE_CHAIN_RESET(sc); 1461 vge_discard_rxbuf(sc, prod); 1462 continue; 1463 } 1464 1465 if (vge_newbuf(sc, prod) != 0) { 1466 ifp->if_iqdrops++; 1467 VGE_CHAIN_RESET(sc); 1468 vge_discard_rxbuf(sc, prod); 1469 continue; 1470 } 1471 1472 /* Chain received mbufs. */ 1473 if (sc->vge_cdata.vge_head != NULL) { 1474 m->m_len = total_len % (MCLBYTES - VGE_RX_BUF_ALIGN); 1475 /* 1476 * Special case: if there's 4 bytes or less 1477 * in this buffer, the mbuf can be discarded: 1478 * the last 4 bytes is the CRC, which we don't 1479 * care about anyway. 1480 */ 1481 if (m->m_len <= ETHER_CRC_LEN) { 1482 sc->vge_cdata.vge_tail->m_len -= 1483 (ETHER_CRC_LEN - m->m_len); 1484 m_freem(m); 1485 } else { 1486 m->m_len -= ETHER_CRC_LEN; 1487 m->m_flags &= ~M_PKTHDR; 1488 sc->vge_cdata.vge_tail->m_next = m; 1489 } 1490 m = sc->vge_cdata.vge_head; 1491 m->m_flags |= M_PKTHDR; 1492 m->m_pkthdr.len = total_len - ETHER_CRC_LEN; 1493 } else { 1494 m->m_flags |= M_PKTHDR; 1495 m->m_pkthdr.len = m->m_len = 1496 (total_len - ETHER_CRC_LEN); 1497 } 1498 1499#ifndef __NO_STRICT_ALIGNMENT 1500 vge_fixup_rx(m); 1501#endif 1502 m->m_pkthdr.rcvif = ifp; 1503 1504 /* Do RX checksumming if enabled */ 1505 if ((ifp->if_capenable & IFCAP_RXCSUM) != 0 && 1506 (rxctl & VGE_RDCTL_FRAG) == 0) { 1507 /* Check IP header checksum */ 1508 if ((rxctl & VGE_RDCTL_IPPKT) != 0) 1509 m->m_pkthdr.csum_flags |= CSUM_IP_CHECKED; 1510 if ((rxctl & VGE_RDCTL_IPCSUMOK) != 0) 1511 m->m_pkthdr.csum_flags |= CSUM_IP_VALID; 1512 1513 /* Check TCP/UDP checksum */ 1514 if (rxctl & (VGE_RDCTL_TCPPKT | VGE_RDCTL_UDPPKT) && 1515 rxctl & VGE_RDCTL_PROTOCSUMOK) { 1516 m->m_pkthdr.csum_flags |= 1517 CSUM_DATA_VALID | CSUM_PSEUDO_HDR; 1518 m->m_pkthdr.csum_data = 0xffff; 1519 } 1520 } 1521 1522 if ((rxstat & VGE_RDSTS_VTAG) != 0) { 1523 /* 1524 * The 32-bit rxctl register is stored in little-endian. 1525 * However, the 16-bit vlan tag is stored in big-endian, 1526 * so we have to byte swap it. 1527 */ 1528 m->m_pkthdr.ether_vtag = 1529 bswap16(rxctl & VGE_RDCTL_VLANID); 1530 m->m_flags |= M_VLANTAG; 1531 } 1532 1533 VGE_UNLOCK(sc); 1534 (*ifp->if_input)(ifp, m); 1535 VGE_LOCK(sc); 1536 sc->vge_cdata.vge_head = NULL; 1537 sc->vge_cdata.vge_tail = NULL; 1538 } 1539 1540 if (prog > 0) { 1541 sc->vge_cdata.vge_rx_prodidx = prod; 1542 bus_dmamap_sync(sc->vge_cdata.vge_rx_ring_tag, 1543 sc->vge_cdata.vge_rx_ring_map, 1544 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1545 /* Update residue counter. */ 1546 if (sc->vge_cdata.vge_rx_commit != 0) { 1547 CSR_WRITE_2(sc, VGE_RXDESC_RESIDUECNT, 1548 sc->vge_cdata.vge_rx_commit); 1549 sc->vge_cdata.vge_rx_commit = 0; 1550 } 1551 } 1552 return (prog); 1553} 1554 1555static void 1556vge_txeof(sc) 1557 struct vge_softc *sc; 1558{ 1559 struct ifnet *ifp; 1560 struct vge_tx_desc *cur_tx; 1561 struct vge_txdesc *txd; 1562 uint32_t txstat; 1563 int cons, prod; 1564 1565 VGE_LOCK_ASSERT(sc); 1566 1567 ifp = sc->vge_ifp; 1568 1569 if (sc->vge_cdata.vge_tx_cnt == 0) 1570 return; 1571 1572 bus_dmamap_sync(sc->vge_cdata.vge_tx_ring_tag, 1573 sc->vge_cdata.vge_tx_ring_map, 1574 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 1575 1576 /* 1577 * Go through our tx list and free mbufs for those 1578 * frames that have been transmitted. 1579 */ 1580 cons = sc->vge_cdata.vge_tx_considx; 1581 prod = sc->vge_cdata.vge_tx_prodidx; 1582 for (; cons != prod; VGE_TX_DESC_INC(cons)) { 1583 cur_tx = &sc->vge_rdata.vge_tx_ring[cons]; 1584 txstat = le32toh(cur_tx->vge_sts); 1585 if ((txstat & VGE_TDSTS_OWN) != 0) 1586 break; 1587 sc->vge_cdata.vge_tx_cnt--; 1588 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 1589 1590 txd = &sc->vge_cdata.vge_txdesc[cons]; 1591 bus_dmamap_sync(sc->vge_cdata.vge_tx_tag, txd->tx_dmamap, 1592 BUS_DMASYNC_POSTWRITE); 1593 bus_dmamap_unload(sc->vge_cdata.vge_tx_tag, txd->tx_dmamap); 1594 1595 KASSERT(txd->tx_m != NULL, ("%s: freeing NULL mbuf!\n", 1596 __func__)); 1597 m_freem(txd->tx_m); 1598 txd->tx_m = NULL; 1599 } 1600 1601 sc->vge_cdata.vge_tx_considx = cons; 1602 if (sc->vge_cdata.vge_tx_cnt == 0) 1603 sc->vge_timer = 0; 1604 else { 1605 /* 1606 * If not all descriptors have been released reaped yet, 1607 * reload the timer so that we will eventually get another 1608 * interrupt that will cause us to re-enter this routine. 1609 * This is done in case the transmitter has gone idle. 1610 */ 1611 CSR_WRITE_1(sc, VGE_CRS1, VGE_CR1_TIMER0_ENABLE); 1612 } 1613} 1614 1615static void 1616vge_tick(xsc) 1617 void *xsc; 1618{ 1619 struct vge_softc *sc; 1620 struct ifnet *ifp; 1621 struct mii_data *mii; 1622 1623 sc = xsc; 1624 ifp = sc->vge_ifp; 1625 VGE_LOCK_ASSERT(sc); 1626 mii = device_get_softc(sc->vge_miibus); 1627 1628 mii_tick(mii); 1629 if (sc->vge_link) { 1630 if (!(mii->mii_media_status & IFM_ACTIVE)) { 1631 sc->vge_link = 0; 1632 if_link_state_change(sc->vge_ifp, 1633 LINK_STATE_DOWN); 1634 } 1635 } else { 1636 if (mii->mii_media_status & IFM_ACTIVE && 1637 IFM_SUBTYPE(mii->mii_media_active) != IFM_NONE) { 1638 sc->vge_link = 1; 1639 if_link_state_change(sc->vge_ifp, 1640 LINK_STATE_UP); 1641 if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd)) 1642 vge_start_locked(ifp); 1643 } 1644 } 1645 1646 return; 1647} 1648 1649#ifdef DEVICE_POLLING 1650static int 1651vge_poll (struct ifnet *ifp, enum poll_cmd cmd, int count) 1652{ 1653 struct vge_softc *sc = ifp->if_softc; 1654 int rx_npkts = 0; 1655 1656 VGE_LOCK(sc); 1657 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) 1658 goto done; 1659 1660 rx_npkts = vge_rxeof(sc, count); 1661 vge_txeof(sc); 1662 1663 if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd)) 1664 vge_start_locked(ifp); 1665 1666 if (cmd == POLL_AND_CHECK_STATUS) { /* also check status register */ 1667 u_int32_t status; 1668 status = CSR_READ_4(sc, VGE_ISR); 1669 if (status == 0xFFFFFFFF) 1670 goto done; 1671 if (status) 1672 CSR_WRITE_4(sc, VGE_ISR, status); 1673 1674 /* 1675 * XXX check behaviour on receiver stalls. 1676 */ 1677 1678 if (status & VGE_ISR_TXDMA_STALL || 1679 status & VGE_ISR_RXDMA_STALL) { 1680 ifp->if_drv_flags &= ~IFF_DRV_RUNNING; 1681 vge_init_locked(sc); 1682 } 1683 1684 if (status & (VGE_ISR_RXOFLOW|VGE_ISR_RXNODESC)) { 1685 vge_rxeof(sc, count); 1686 ifp->if_ierrors++; 1687 CSR_WRITE_1(sc, VGE_RXQCSRS, VGE_RXQCSR_RUN); 1688 CSR_WRITE_1(sc, VGE_RXQCSRS, VGE_RXQCSR_WAK); 1689 } 1690 } 1691done: 1692 VGE_UNLOCK(sc); 1693 return (rx_npkts); 1694} 1695#endif /* DEVICE_POLLING */ 1696 1697static void 1698vge_intr(arg) 1699 void *arg; 1700{ 1701 struct vge_softc *sc; 1702 struct ifnet *ifp; 1703 u_int32_t status; 1704 1705 sc = arg; 1706 1707 if (sc->suspended) { 1708 return; 1709 } 1710 1711 VGE_LOCK(sc); 1712 ifp = sc->vge_ifp; 1713 1714 if (!(ifp->if_flags & IFF_UP)) { 1715 VGE_UNLOCK(sc); 1716 return; 1717 } 1718 1719#ifdef DEVICE_POLLING 1720 if (ifp->if_capenable & IFCAP_POLLING) { 1721 VGE_UNLOCK(sc); 1722 return; 1723 } 1724#endif 1725 1726 /* Disable interrupts */ 1727 CSR_WRITE_1(sc, VGE_CRC3, VGE_CR3_INT_GMSK); 1728 1729 for (;;) { 1730 1731 status = CSR_READ_4(sc, VGE_ISR); 1732 /* If the card has gone away the read returns 0xffff. */ 1733 if (status == 0xFFFFFFFF) 1734 break; 1735 1736 if (status) 1737 CSR_WRITE_4(sc, VGE_ISR, status); 1738 1739 if ((status & VGE_INTRS) == 0) 1740 break; 1741 1742 if (status & (VGE_ISR_RXOK|VGE_ISR_RXOK_HIPRIO)) 1743 vge_rxeof(sc, VGE_RX_DESC_CNT); 1744 1745 if (status & (VGE_ISR_RXOFLOW|VGE_ISR_RXNODESC)) { 1746 vge_rxeof(sc, VGE_RX_DESC_CNT); 1747 CSR_WRITE_1(sc, VGE_RXQCSRS, VGE_RXQCSR_RUN); 1748 CSR_WRITE_1(sc, VGE_RXQCSRS, VGE_RXQCSR_WAK); 1749 } 1750 1751 if (status & (VGE_ISR_TXOK0|VGE_ISR_TIMER0)) 1752 vge_txeof(sc); 1753 1754 if (status & (VGE_ISR_TXDMA_STALL|VGE_ISR_RXDMA_STALL)) { 1755 ifp->if_drv_flags &= ~IFF_DRV_RUNNING; 1756 vge_init_locked(sc); 1757 } 1758 1759 if (status & VGE_ISR_LINKSTS) 1760 vge_tick(sc); 1761 } 1762 1763 /* Re-enable interrupts */ 1764 CSR_WRITE_1(sc, VGE_CRS3, VGE_CR3_INT_GMSK); 1765 1766 if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd)) 1767 vge_start_locked(ifp); 1768 1769 VGE_UNLOCK(sc); 1770 1771 return; 1772} 1773 1774static int 1775vge_encap(sc, m_head) 1776 struct vge_softc *sc; 1777 struct mbuf **m_head; 1778{ 1779 struct vge_txdesc *txd; 1780 struct vge_tx_frag *frag; 1781 struct mbuf *m; 1782 bus_dma_segment_t txsegs[VGE_MAXTXSEGS]; 1783 int error, i, nsegs, padlen; 1784 uint32_t cflags; 1785 1786 VGE_LOCK_ASSERT(sc); 1787 1788 M_ASSERTPKTHDR((*m_head)); 1789 1790 /* Argh. This chip does not autopad short frames. */ 1791 if ((*m_head)->m_pkthdr.len < VGE_MIN_FRAMELEN) { 1792 m = *m_head; 1793 padlen = VGE_MIN_FRAMELEN - m->m_pkthdr.len; 1794 if (M_WRITABLE(m) == 0) { 1795 /* Get a writable copy. */ 1796 m = m_dup(*m_head, M_DONTWAIT); 1797 m_freem(*m_head); 1798 if (m == NULL) { 1799 *m_head = NULL; 1800 return (ENOBUFS); 1801 } 1802 *m_head = m; 1803 } 1804 if (M_TRAILINGSPACE(m) < padlen) { 1805 m = m_defrag(m, M_DONTWAIT); 1806 if (m == NULL) { 1807 m_freem(*m_head); 1808 *m_head = NULL; 1809 return (ENOBUFS); 1810 } 1811 } 1812 /* 1813 * Manually pad short frames, and zero the pad space 1814 * to avoid leaking data. 1815 */ 1816 bzero(mtod(m, char *) + m->m_pkthdr.len, padlen); 1817 m->m_pkthdr.len += padlen; 1818 m->m_len = m->m_pkthdr.len; 1819 *m_head = m; 1820 } 1821 1822 txd = &sc->vge_cdata.vge_txdesc[sc->vge_cdata.vge_tx_prodidx]; 1823 1824 error = bus_dmamap_load_mbuf_sg(sc->vge_cdata.vge_tx_tag, 1825 txd->tx_dmamap, *m_head, txsegs, &nsegs, 0); 1826 if (error == EFBIG) { 1827 m = m_collapse(*m_head, M_DONTWAIT, VGE_MAXTXSEGS); 1828 if (m == NULL) { 1829 m_freem(*m_head); 1830 *m_head = NULL; 1831 return (ENOMEM); 1832 } 1833 *m_head = m; 1834 error = bus_dmamap_load_mbuf_sg(sc->vge_cdata.vge_tx_tag, 1835 txd->tx_dmamap, *m_head, txsegs, &nsegs, 0); 1836 if (error != 0) { 1837 m_freem(*m_head); 1838 *m_head = NULL; 1839 return (error); 1840 } 1841 } else if (error != 0) 1842 return (error); 1843 bus_dmamap_sync(sc->vge_cdata.vge_tx_tag, txd->tx_dmamap, 1844 BUS_DMASYNC_PREWRITE); 1845 1846 m = *m_head; 1847 cflags = 0; 1848 1849 /* Configure checksum offload. */ 1850 if ((m->m_pkthdr.csum_flags & CSUM_IP) != 0) 1851 cflags |= VGE_TDCTL_IPCSUM; 1852 if ((m->m_pkthdr.csum_flags & CSUM_TCP) != 0) 1853 cflags |= VGE_TDCTL_TCPCSUM; 1854 if ((m->m_pkthdr.csum_flags & CSUM_UDP) != 0) 1855 cflags |= VGE_TDCTL_UDPCSUM; 1856 1857 /* Configure VLAN. */ 1858 if ((m->m_flags & M_VLANTAG) != 0) 1859 cflags |= m->m_pkthdr.ether_vtag | VGE_TDCTL_VTAG; 1860 txd->tx_desc->vge_sts = htole32(m->m_pkthdr.len << 16); 1861 /* 1862 * XXX 1863 * Velocity family seems to support TSO but no information 1864 * for MSS configuration is available. Also the number of 1865 * fragments supported by a descriptor is too small to hold 1866 * entire 64KB TCP/IP segment. Maybe VGE_TD_LS_MOF, 1867 * VGE_TD_LS_SOF and VGE_TD_LS_EOF could be used to build 1868 * longer chain of buffers but no additional information is 1869 * available. 1870 * 1871 * When telling the chip how many segments there are, we 1872 * must use nsegs + 1 instead of just nsegs. Darned if I 1873 * know why. This also means we can't use the last fragment 1874 * field of Tx descriptor. 1875 */ 1876 txd->tx_desc->vge_ctl = htole32(cflags | ((nsegs + 1) << 28) | 1877 VGE_TD_LS_NORM); 1878 for (i = 0; i < nsegs; i++) { 1879 frag = &txd->tx_desc->vge_frag[i]; 1880 frag->vge_addrlo = htole32(VGE_ADDR_LO(txsegs[i].ds_addr)); 1881 frag->vge_addrhi = htole32(VGE_ADDR_HI(txsegs[i].ds_addr) | 1882 (VGE_BUFLEN(txsegs[i].ds_len) << 16)); 1883 } 1884 1885 sc->vge_cdata.vge_tx_cnt++; 1886 VGE_TX_DESC_INC(sc->vge_cdata.vge_tx_prodidx); 1887 1888 /* 1889 * Finally request interrupt and give the first descriptor 1890 * ownership to hardware. 1891 */ 1892 txd->tx_desc->vge_ctl |= htole32(VGE_TDCTL_TIC); 1893 txd->tx_desc->vge_sts |= htole32(VGE_TDSTS_OWN); 1894 txd->tx_m = m; 1895 1896 return (0); 1897} 1898 1899/* 1900 * Main transmit routine. 1901 */ 1902 1903static void 1904vge_start(ifp) 1905 struct ifnet *ifp; 1906{ 1907 struct vge_softc *sc; 1908 1909 sc = ifp->if_softc; 1910 VGE_LOCK(sc); 1911 vge_start_locked(ifp); 1912 VGE_UNLOCK(sc); 1913} 1914 1915 1916static void 1917vge_start_locked(ifp) 1918 struct ifnet *ifp; 1919{ 1920 struct vge_softc *sc; 1921 struct vge_txdesc *txd; 1922 struct mbuf *m_head; 1923 int enq, idx; 1924 1925 sc = ifp->if_softc; 1926 1927 VGE_LOCK_ASSERT(sc); 1928 1929 if (sc->vge_link == 0 || 1930 (ifp->if_drv_flags & (IFF_DRV_RUNNING | IFF_DRV_OACTIVE)) != 1931 IFF_DRV_RUNNING) 1932 return; 1933 1934 idx = sc->vge_cdata.vge_tx_prodidx; 1935 VGE_TX_DESC_DEC(idx); 1936 for (enq = 0; !IFQ_DRV_IS_EMPTY(&ifp->if_snd) && 1937 sc->vge_cdata.vge_tx_cnt < VGE_TX_DESC_CNT - 1; ) { 1938 IFQ_DRV_DEQUEUE(&ifp->if_snd, m_head); 1939 if (m_head == NULL) 1940 break; 1941 /* 1942 * Pack the data into the transmit ring. If we 1943 * don't have room, set the OACTIVE flag and wait 1944 * for the NIC to drain the ring. 1945 */ 1946 if (vge_encap(sc, &m_head)) { 1947 if (m_head == NULL) 1948 break; 1949 IFQ_DRV_PREPEND(&ifp->if_snd, m_head); 1950 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 1951 break; 1952 } 1953 1954 txd = &sc->vge_cdata.vge_txdesc[idx]; 1955 txd->tx_desc->vge_frag[0].vge_addrhi |= htole32(VGE_TXDESC_Q); 1956 VGE_TX_DESC_INC(idx); 1957 1958 enq++; 1959 /* 1960 * If there's a BPF listener, bounce a copy of this frame 1961 * to him. 1962 */ 1963 ETHER_BPF_MTAP(ifp, m_head); 1964 } 1965 1966 if (enq > 0) { 1967 bus_dmamap_sync(sc->vge_cdata.vge_tx_ring_tag, 1968 sc->vge_cdata.vge_tx_ring_map, 1969 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1970 /* Issue a transmit command. */ 1971 CSR_WRITE_2(sc, VGE_TXQCSRS, VGE_TXQCSR_WAK0); 1972 /* 1973 * Use the countdown timer for interrupt moderation. 1974 * 'TX done' interrupts are disabled. Instead, we reset the 1975 * countdown timer, which will begin counting until it hits 1976 * the value in the SSTIMER register, and then trigger an 1977 * interrupt. Each time we set the TIMER0_ENABLE bit, the 1978 * the timer count is reloaded. Only when the transmitter 1979 * is idle will the timer hit 0 and an interrupt fire. 1980 */ 1981 CSR_WRITE_1(sc, VGE_CRS1, VGE_CR1_TIMER0_ENABLE); 1982 1983 /* 1984 * Set a timeout in case the chip goes out to lunch. 1985 */ 1986 sc->vge_timer = 5; 1987 } 1988} 1989 1990static void 1991vge_init(xsc) 1992 void *xsc; 1993{ 1994 struct vge_softc *sc = xsc; 1995 1996 VGE_LOCK(sc); 1997 vge_init_locked(sc); 1998 VGE_UNLOCK(sc); 1999} 2000 2001static void 2002vge_init_locked(struct vge_softc *sc) 2003{ 2004 struct ifnet *ifp = sc->vge_ifp; 2005 struct mii_data *mii; 2006 int error, i; 2007 2008 VGE_LOCK_ASSERT(sc); 2009 mii = device_get_softc(sc->vge_miibus); 2010 2011 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0) 2012 return; 2013 2014 /* 2015 * Cancel pending I/O and free all RX/TX buffers. 2016 */ 2017 vge_stop(sc); 2018 vge_reset(sc); 2019 2020 /* 2021 * Initialize the RX and TX descriptors and mbufs. 2022 */ 2023 2024 error = vge_rx_list_init(sc); 2025 if (error != 0) { 2026 device_printf(sc->vge_dev, "no memory for Rx buffers.\n"); 2027 return; 2028 } 2029 vge_tx_list_init(sc); 2030 2031 /* Set our station address */ 2032 for (i = 0; i < ETHER_ADDR_LEN; i++) 2033 CSR_WRITE_1(sc, VGE_PAR0 + i, IF_LLADDR(sc->vge_ifp)[i]); 2034 2035 /* 2036 * Set receive FIFO threshold. Also allow transmission and 2037 * reception of VLAN tagged frames. 2038 */ 2039 CSR_CLRBIT_1(sc, VGE_RXCFG, VGE_RXCFG_FIFO_THR|VGE_RXCFG_VTAGOPT); 2040 CSR_SETBIT_1(sc, VGE_RXCFG, VGE_RXFIFOTHR_128BYTES|VGE_VTAG_OPT2); 2041 2042 /* Set DMA burst length */ 2043 CSR_CLRBIT_1(sc, VGE_DMACFG0, VGE_DMACFG0_BURSTLEN); 2044 CSR_SETBIT_1(sc, VGE_DMACFG0, VGE_DMABURST_128); 2045 2046 CSR_SETBIT_1(sc, VGE_TXCFG, VGE_TXCFG_ARB_PRIO|VGE_TXCFG_NONBLK); 2047 2048 /* Set collision backoff algorithm */ 2049 CSR_CLRBIT_1(sc, VGE_CHIPCFG1, VGE_CHIPCFG1_CRANDOM| 2050 VGE_CHIPCFG1_CAP|VGE_CHIPCFG1_MBA|VGE_CHIPCFG1_BAKOPT); 2051 CSR_SETBIT_1(sc, VGE_CHIPCFG1, VGE_CHIPCFG1_OFSET); 2052 2053 /* Disable LPSEL field in priority resolution */ 2054 CSR_SETBIT_1(sc, VGE_DIAGCTL, VGE_DIAGCTL_LPSEL_DIS); 2055 2056 /* 2057 * Load the addresses of the DMA queues into the chip. 2058 * Note that we only use one transmit queue. 2059 */ 2060 2061 CSR_WRITE_4(sc, VGE_TXDESC_HIADDR, 2062 VGE_ADDR_HI(sc->vge_rdata.vge_tx_ring_paddr)); 2063 CSR_WRITE_4(sc, VGE_TXDESC_ADDR_LO0, 2064 VGE_ADDR_LO(sc->vge_rdata.vge_tx_ring_paddr)); 2065 CSR_WRITE_2(sc, VGE_TXDESCNUM, VGE_TX_DESC_CNT - 1); 2066 2067 CSR_WRITE_4(sc, VGE_RXDESC_ADDR_LO, 2068 VGE_ADDR_LO(sc->vge_rdata.vge_rx_ring_paddr)); 2069 CSR_WRITE_2(sc, VGE_RXDESCNUM, VGE_RX_DESC_CNT - 1); 2070 CSR_WRITE_2(sc, VGE_RXDESC_RESIDUECNT, VGE_RX_DESC_CNT); 2071 2072 /* Enable and wake up the RX descriptor queue */ 2073 CSR_WRITE_1(sc, VGE_RXQCSRS, VGE_RXQCSR_RUN); 2074 CSR_WRITE_1(sc, VGE_RXQCSRS, VGE_RXQCSR_WAK); 2075 2076 /* Enable the TX descriptor queue */ 2077 CSR_WRITE_2(sc, VGE_TXQCSRS, VGE_TXQCSR_RUN0); 2078 2079 /* Set up the receive filter -- allow large frames for VLANs. */ 2080 CSR_WRITE_1(sc, VGE_RXCTL, VGE_RXCTL_RX_UCAST|VGE_RXCTL_RX_GIANT); 2081 2082 /* If we want promiscuous mode, set the allframes bit. */ 2083 if (ifp->if_flags & IFF_PROMISC) { 2084 CSR_SETBIT_1(sc, VGE_RXCTL, VGE_RXCTL_RX_PROMISC); 2085 } 2086 2087 /* Set capture broadcast bit to capture broadcast frames. */ 2088 if (ifp->if_flags & IFF_BROADCAST) { 2089 CSR_SETBIT_1(sc, VGE_RXCTL, VGE_RXCTL_RX_BCAST); 2090 } 2091 2092 /* Set multicast bit to capture multicast frames. */ 2093 if (ifp->if_flags & IFF_MULTICAST) { 2094 CSR_SETBIT_1(sc, VGE_RXCTL, VGE_RXCTL_RX_MCAST); 2095 } 2096 2097 /* Init the cam filter. */ 2098 vge_cam_clear(sc); 2099 2100 /* Init the multicast filter. */ 2101 vge_setmulti(sc); 2102 2103 /* Enable flow control */ 2104 2105 CSR_WRITE_1(sc, VGE_CRS2, 0x8B); 2106 2107 /* Enable jumbo frame reception (if desired) */ 2108 2109 /* Start the MAC. */ 2110 CSR_WRITE_1(sc, VGE_CRC0, VGE_CR0_STOP); 2111 CSR_WRITE_1(sc, VGE_CRS1, VGE_CR1_NOPOLL); 2112 CSR_WRITE_1(sc, VGE_CRS0, 2113 VGE_CR0_TX_ENABLE|VGE_CR0_RX_ENABLE|VGE_CR0_START); 2114 2115 /* 2116 * Configure one-shot timer for microsecond 2117 * resolution and load it for 500 usecs. 2118 */ 2119 CSR_SETBIT_1(sc, VGE_DIAGCTL, VGE_DIAGCTL_TIMER0_RES); 2120 CSR_WRITE_2(sc, VGE_SSTIMER, 400); 2121 2122 /* 2123 * Configure interrupt moderation for receive. Enable 2124 * the holdoff counter and load it, and set the RX 2125 * suppression count to the number of descriptors we 2126 * want to allow before triggering an interrupt. 2127 * The holdoff timer is in units of 20 usecs. 2128 */ 2129 2130#ifdef notyet 2131 CSR_WRITE_1(sc, VGE_INTCTL1, VGE_INTCTL_TXINTSUP_DISABLE); 2132 /* Select the interrupt holdoff timer page. */ 2133 CSR_CLRBIT_1(sc, VGE_CAMCTL, VGE_CAMCTL_PAGESEL); 2134 CSR_SETBIT_1(sc, VGE_CAMCTL, VGE_PAGESEL_INTHLDOFF); 2135 CSR_WRITE_1(sc, VGE_INTHOLDOFF, 10); /* ~200 usecs */ 2136 2137 /* Enable use of the holdoff timer. */ 2138 CSR_WRITE_1(sc, VGE_CRS3, VGE_CR3_INT_HOLDOFF); 2139 CSR_WRITE_1(sc, VGE_INTCTL1, VGE_INTCTL_SC_RELOAD); 2140 2141 /* Select the RX suppression threshold page. */ 2142 CSR_CLRBIT_1(sc, VGE_CAMCTL, VGE_CAMCTL_PAGESEL); 2143 CSR_SETBIT_1(sc, VGE_CAMCTL, VGE_PAGESEL_RXSUPPTHR); 2144 CSR_WRITE_1(sc, VGE_RXSUPPTHR, 64); /* interrupt after 64 packets */ 2145 2146 /* Restore the page select bits. */ 2147 CSR_CLRBIT_1(sc, VGE_CAMCTL, VGE_CAMCTL_PAGESEL); 2148 CSR_SETBIT_1(sc, VGE_CAMCTL, VGE_PAGESEL_MAR); 2149#endif 2150 2151#ifdef DEVICE_POLLING 2152 /* 2153 * Disable interrupts if we are polling. 2154 */ 2155 if (ifp->if_capenable & IFCAP_POLLING) { 2156 CSR_WRITE_4(sc, VGE_IMR, 0); 2157 CSR_WRITE_1(sc, VGE_CRC3, VGE_CR3_INT_GMSK); 2158 } else /* otherwise ... */ 2159#endif 2160 { 2161 /* 2162 * Enable interrupts. 2163 */ 2164 CSR_WRITE_4(sc, VGE_IMR, VGE_INTRS); 2165 CSR_WRITE_4(sc, VGE_ISR, 0); 2166 CSR_WRITE_1(sc, VGE_CRS3, VGE_CR3_INT_GMSK); 2167 } 2168 2169 mii_mediachg(mii); 2170 2171 ifp->if_drv_flags |= IFF_DRV_RUNNING; 2172 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 2173 callout_reset(&sc->vge_watchdog, hz, vge_watchdog, sc); 2174 2175 sc->vge_link = 0; 2176} 2177 2178/* 2179 * Set media options. 2180 */ 2181static int 2182vge_ifmedia_upd(ifp) 2183 struct ifnet *ifp; 2184{ 2185 struct vge_softc *sc; 2186 struct mii_data *mii; 2187 2188 sc = ifp->if_softc; 2189 VGE_LOCK(sc); 2190 mii = device_get_softc(sc->vge_miibus); 2191 mii_mediachg(mii); 2192 VGE_UNLOCK(sc); 2193 2194 return (0); 2195} 2196 2197/* 2198 * Report current media status. 2199 */ 2200static void 2201vge_ifmedia_sts(ifp, ifmr) 2202 struct ifnet *ifp; 2203 struct ifmediareq *ifmr; 2204{ 2205 struct vge_softc *sc; 2206 struct mii_data *mii; 2207 2208 sc = ifp->if_softc; 2209 mii = device_get_softc(sc->vge_miibus); 2210 2211 VGE_LOCK(sc); 2212 mii_pollstat(mii); 2213 VGE_UNLOCK(sc); 2214 ifmr->ifm_active = mii->mii_media_active; 2215 ifmr->ifm_status = mii->mii_media_status; 2216 2217 return; 2218} 2219 2220static void 2221vge_miibus_statchg(dev) 2222 device_t dev; 2223{ 2224 struct vge_softc *sc; 2225 struct mii_data *mii; 2226 struct ifmedia_entry *ife; 2227 2228 sc = device_get_softc(dev); 2229 mii = device_get_softc(sc->vge_miibus); 2230 ife = mii->mii_media.ifm_cur; 2231 2232 /* 2233 * If the user manually selects a media mode, we need to turn 2234 * on the forced MAC mode bit in the DIAGCTL register. If the 2235 * user happens to choose a full duplex mode, we also need to 2236 * set the 'force full duplex' bit. This applies only to 2237 * 10Mbps and 100Mbps speeds. In autoselect mode, forced MAC 2238 * mode is disabled, and in 1000baseT mode, full duplex is 2239 * always implied, so we turn on the forced mode bit but leave 2240 * the FDX bit cleared. 2241 */ 2242 2243 switch (IFM_SUBTYPE(ife->ifm_media)) { 2244 case IFM_AUTO: 2245 CSR_CLRBIT_1(sc, VGE_DIAGCTL, VGE_DIAGCTL_MACFORCE); 2246 CSR_CLRBIT_1(sc, VGE_DIAGCTL, VGE_DIAGCTL_FDXFORCE); 2247 break; 2248 case IFM_1000_T: 2249 CSR_SETBIT_1(sc, VGE_DIAGCTL, VGE_DIAGCTL_MACFORCE); 2250 CSR_CLRBIT_1(sc, VGE_DIAGCTL, VGE_DIAGCTL_FDXFORCE); 2251 break; 2252 case IFM_100_TX: 2253 case IFM_10_T: 2254 CSR_SETBIT_1(sc, VGE_DIAGCTL, VGE_DIAGCTL_MACFORCE); 2255 if ((ife->ifm_media & IFM_GMASK) == IFM_FDX) { 2256 CSR_SETBIT_1(sc, VGE_DIAGCTL, VGE_DIAGCTL_FDXFORCE); 2257 } else { 2258 CSR_CLRBIT_1(sc, VGE_DIAGCTL, VGE_DIAGCTL_FDXFORCE); 2259 } 2260 break; 2261 default: 2262 device_printf(dev, "unknown media type: %x\n", 2263 IFM_SUBTYPE(ife->ifm_media)); 2264 break; 2265 } 2266 2267 return; 2268} 2269 2270static int 2271vge_ioctl(ifp, command, data) 2272 struct ifnet *ifp; 2273 u_long command; 2274 caddr_t data; 2275{ 2276 struct vge_softc *sc = ifp->if_softc; 2277 struct ifreq *ifr = (struct ifreq *) data; 2278 struct mii_data *mii; 2279 int error = 0; 2280 2281 switch (command) { 2282 case SIOCSIFMTU: 2283 if (ifr->ifr_mtu > VGE_JUMBO_MTU) 2284 error = EINVAL; 2285 ifp->if_mtu = ifr->ifr_mtu; 2286 break; 2287 case SIOCSIFFLAGS: 2288 VGE_LOCK(sc); 2289 if (ifp->if_flags & IFF_UP) { 2290 if (ifp->if_drv_flags & IFF_DRV_RUNNING && 2291 ifp->if_flags & IFF_PROMISC && 2292 !(sc->vge_if_flags & IFF_PROMISC)) { 2293 CSR_SETBIT_1(sc, VGE_RXCTL, 2294 VGE_RXCTL_RX_PROMISC); 2295 vge_setmulti(sc); 2296 } else if (ifp->if_drv_flags & IFF_DRV_RUNNING && 2297 !(ifp->if_flags & IFF_PROMISC) && 2298 sc->vge_if_flags & IFF_PROMISC) { 2299 CSR_CLRBIT_1(sc, VGE_RXCTL, 2300 VGE_RXCTL_RX_PROMISC); 2301 vge_setmulti(sc); 2302 } else 2303 vge_init_locked(sc); 2304 } else { 2305 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 2306 vge_stop(sc); 2307 } 2308 sc->vge_if_flags = ifp->if_flags; 2309 VGE_UNLOCK(sc); 2310 break; 2311 case SIOCADDMULTI: 2312 case SIOCDELMULTI: 2313 VGE_LOCK(sc); 2314 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 2315 vge_setmulti(sc); 2316 VGE_UNLOCK(sc); 2317 break; 2318 case SIOCGIFMEDIA: 2319 case SIOCSIFMEDIA: 2320 mii = device_get_softc(sc->vge_miibus); 2321 error = ifmedia_ioctl(ifp, ifr, &mii->mii_media, command); 2322 break; 2323 case SIOCSIFCAP: 2324 { 2325 int mask = ifr->ifr_reqcap ^ ifp->if_capenable; 2326#ifdef DEVICE_POLLING 2327 if (mask & IFCAP_POLLING) { 2328 if (ifr->ifr_reqcap & IFCAP_POLLING) { 2329 error = ether_poll_register(vge_poll, ifp); 2330 if (error) 2331 return(error); 2332 VGE_LOCK(sc); 2333 /* Disable interrupts */ 2334 CSR_WRITE_4(sc, VGE_IMR, 0); 2335 CSR_WRITE_1(sc, VGE_CRC3, VGE_CR3_INT_GMSK); 2336 ifp->if_capenable |= IFCAP_POLLING; 2337 VGE_UNLOCK(sc); 2338 } else { 2339 error = ether_poll_deregister(ifp); 2340 /* Enable interrupts. */ 2341 VGE_LOCK(sc); 2342 CSR_WRITE_4(sc, VGE_IMR, VGE_INTRS); 2343 CSR_WRITE_4(sc, VGE_ISR, 0xFFFFFFFF); 2344 CSR_WRITE_1(sc, VGE_CRS3, VGE_CR3_INT_GMSK); 2345 ifp->if_capenable &= ~IFCAP_POLLING; 2346 VGE_UNLOCK(sc); 2347 } 2348 } 2349#endif /* DEVICE_POLLING */ 2350 VGE_LOCK(sc); 2351 if ((mask & IFCAP_TXCSUM) != 0 && 2352 (ifp->if_capabilities & IFCAP_TXCSUM) != 0) { 2353 ifp->if_capenable ^= IFCAP_TXCSUM; 2354 if ((ifp->if_capenable & IFCAP_TXCSUM) != 0) 2355 ifp->if_hwassist |= VGE_CSUM_FEATURES; 2356 else 2357 ifp->if_hwassist &= ~VGE_CSUM_FEATURES; 2358 } 2359 if ((mask & IFCAP_RXCSUM) != 0 && 2360 (ifp->if_capabilities & IFCAP_RXCSUM) != 0) 2361 ifp->if_capenable ^= IFCAP_RXCSUM; 2362 VGE_UNLOCK(sc); 2363 } 2364 break; 2365 default: 2366 error = ether_ioctl(ifp, command, data); 2367 break; 2368 } 2369 2370 return (error); 2371} 2372 2373static void 2374vge_watchdog(void *arg) 2375{ 2376 struct vge_softc *sc; 2377 struct ifnet *ifp; 2378 2379 sc = arg; 2380 VGE_LOCK_ASSERT(sc); 2381 callout_reset(&sc->vge_watchdog, hz, vge_watchdog, sc); 2382 if (sc->vge_timer == 0 || --sc->vge_timer > 0) 2383 return; 2384 2385 ifp = sc->vge_ifp; 2386 if_printf(ifp, "watchdog timeout\n"); 2387 ifp->if_oerrors++; 2388 2389 vge_txeof(sc); 2390 vge_rxeof(sc, VGE_RX_DESC_CNT); 2391 2392 ifp->if_drv_flags &= ~IFF_DRV_RUNNING; 2393 vge_init_locked(sc); 2394 2395 return; 2396} 2397 2398/* 2399 * Stop the adapter and free any mbufs allocated to the 2400 * RX and TX lists. 2401 */ 2402static void 2403vge_stop(sc) 2404 struct vge_softc *sc; 2405{ 2406 struct ifnet *ifp; 2407 2408 VGE_LOCK_ASSERT(sc); 2409 ifp = sc->vge_ifp; 2410 sc->vge_timer = 0; 2411 callout_stop(&sc->vge_watchdog); 2412 2413 ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE); 2414 2415 CSR_WRITE_1(sc, VGE_CRC3, VGE_CR3_INT_GMSK); 2416 CSR_WRITE_1(sc, VGE_CRS0, VGE_CR0_STOP); 2417 CSR_WRITE_4(sc, VGE_ISR, 0xFFFFFFFF); 2418 CSR_WRITE_2(sc, VGE_TXQCSRC, 0xFFFF); 2419 CSR_WRITE_1(sc, VGE_RXQCSRC, 0xFF); 2420 CSR_WRITE_4(sc, VGE_RXDESC_ADDR_LO, 0); 2421 2422 VGE_CHAIN_RESET(sc); 2423 vge_txeof(sc); 2424 vge_freebufs(sc); 2425} 2426 2427/* 2428 * Device suspend routine. Stop the interface and save some PCI 2429 * settings in case the BIOS doesn't restore them properly on 2430 * resume. 2431 */ 2432static int 2433vge_suspend(dev) 2434 device_t dev; 2435{ 2436 struct vge_softc *sc; 2437 2438 sc = device_get_softc(dev); 2439 2440 VGE_LOCK(sc); 2441 vge_stop(sc); 2442 2443 sc->suspended = 1; 2444 VGE_UNLOCK(sc); 2445 2446 return (0); 2447} 2448 2449/* 2450 * Device resume routine. Restore some PCI settings in case the BIOS 2451 * doesn't, re-enable busmastering, and restart the interface if 2452 * appropriate. 2453 */ 2454static int 2455vge_resume(dev) 2456 device_t dev; 2457{ 2458 struct vge_softc *sc; 2459 struct ifnet *ifp; 2460 2461 sc = device_get_softc(dev); 2462 ifp = sc->vge_ifp; 2463 2464 /* reenable busmastering */ 2465 pci_enable_busmaster(dev); 2466 pci_enable_io(dev, SYS_RES_MEMORY); 2467 2468 /* reinitialize interface if necessary */ 2469 VGE_LOCK(sc); 2470 if (ifp->if_flags & IFF_UP) { 2471 ifp->if_drv_flags &= ~IFF_DRV_RUNNING; 2472 vge_init_locked(sc); 2473 } 2474 sc->suspended = 0; 2475 VGE_UNLOCK(sc); 2476 2477 return (0); 2478} 2479 2480/* 2481 * Stop all chip I/O so that the kernel's probe routines don't 2482 * get confused by errant DMAs when rebooting. 2483 */ 2484static int 2485vge_shutdown(dev) 2486 device_t dev; 2487{ 2488 struct vge_softc *sc; 2489 2490 sc = device_get_softc(dev); 2491 2492 VGE_LOCK(sc); 2493 vge_stop(sc); 2494 VGE_UNLOCK(sc); 2495 2496 return (0); 2497} 2498