1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22 /* 23 * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #include <sys/types.h> 28 #include <sys/stream.h> 29 #include <sys/strsun.h> 30 #include <sys/stat.h> 31 #include <sys/pci.h> 32 #include <sys/modctl.h> 33 #include <sys/kstat.h> 34 #include <sys/ethernet.h> 35 #include <sys/devops.h> 36 #include <sys/debug.h> 37 #include <sys/conf.h> 38 #include <sys/mac.h> 39 #include <sys/mac_provider.h> 40 #include <sys/mac_ether.h> 41 #include <sys/sysmacros.h> 42 #include <sys/dditypes.h> 43 #include <sys/ddi.h> 44 #include <sys/sunddi.h> 45 #include <sys/miiregs.h> 46 #include <sys/byteorder.h> 47 #include <sys/note.h> 48 #include <sys/vlan.h> 49 50 #include "vr.h" 51 #include "vr_impl.h" 52 53 /* 54 * VR in a nutshell 55 * The card uses two rings of data structures to communicate with the host. 56 * These are referred to as "descriptor rings" and there is one for transmit 57 * (TX) and one for receive (RX). 58 * 59 * The driver uses a "DMA buffer" data type for mapping to those descriptor 60 * rings. This is a structure with handles and a DMA'able buffer attached to it. 61 * 62 * Receive 63 * The receive ring is filled with DMA buffers. Received packets are copied into 64 * a newly allocated mblk's and passed upstream. 65 * 66 * Transmit 67 * Each transmit descriptor has a DMA buffer attached to it. The data of TX 68 * packets is copied into the DMA buffer which is then enqueued for 69 * transmission. 70 * 71 * Reclaim of transmitted packets is done as a result of a transmit completion 72 * interrupt which is generated 3 times per ring at minimum. 73 */ 74 75 #if defined(DEBUG) 76 uint32_t vrdebug = 1; 77 #define VR_DEBUG(args) do { \ 78 if (vrdebug > 0) \ 79 (*vr_debug()) args; \ 80 _NOTE(CONSTANTCONDITION) \ 81 } while (0) 82 static void vr_prt(const char *fmt, ...); 83 void (*vr_debug())(const char *fmt, ...); 84 #else 85 #define VR_DEBUG(args) do ; _NOTE(CONSTANTCONDITION) while (0) 86 #endif 87 88 static char vr_ident[] = "VIA Rhine Ethernet v1.42"; 89 90 /* 91 * Attributes for accessing registers and memory descriptors for this device. 92 */ 93 static ddi_device_acc_attr_t vr_dev_dma_accattr = { 94 DDI_DEVICE_ATTR_V0, 95 DDI_STRUCTURE_LE_ACC, 96 DDI_STRICTORDER_ACC 97 }; 98 99 /* 100 * Attributes for accessing data. 101 */ 102 static ddi_device_acc_attr_t vr_data_dma_accattr = { 103 DDI_DEVICE_ATTR_V0, 104 DDI_NEVERSWAP_ACC, 105 DDI_STRICTORDER_ACC 106 }; 107 108 /* 109 * DMA attributes for descriptors for communication with the device 110 * This driver assumes that all descriptors of one ring fit in one consequitive 111 * memory area of max 4K (256 descriptors) that does not cross a page boundary. 112 * Therefore, we request 4K alignement. 113 */ 114 static ddi_dma_attr_t vr_dev_dma_attr = { 115 DMA_ATTR_V0, /* version number */ 116 0, /* low DMA address range */ 117 0xFFFFFFFF, /* high DMA address range */ 118 0x7FFFFFFF, /* DMA counter register */ 119 0x1000, /* DMA address alignment */ 120 0x7F, /* DMA burstsizes */ 121 1, /* min effective DMA size */ 122 0xFFFFFFFF, /* max DMA xfer size */ 123 0xFFFFFFFF, /* segment boundary */ 124 1, /* s/g list length */ 125 1, /* granularity of device */ 126 0 /* DMA transfer flags */ 127 }; 128 129 /* 130 * DMA attributes for the data moved to/from the device 131 * Note that the alignement is set to 2K so hat a 1500 byte packet never 132 * crosses a page boundary and thus that a DMA transfer is not split up in 133 * multiple cookies with a 4K/8K pagesize 134 */ 135 static ddi_dma_attr_t vr_data_dma_attr = { 136 DMA_ATTR_V0, /* version number */ 137 0, /* low DMA address range */ 138 0xFFFFFFFF, /* high DMA address range */ 139 0x7FFFFFFF, /* DMA counter register */ 140 0x800, /* DMA address alignment */ 141 0xfff, /* DMA burstsizes */ 142 1, /* min effective DMA size */ 143 0xFFFFFFFF, /* max DMA xfer size */ 144 0xFFFFFFFF, /* segment boundary */ 145 1, /* s/g list length */ 146 1, /* granularity of device */ 147 0 /* DMA transfer flags */ 148 }; 149 150 static mac_callbacks_t vr_mac_callbacks = { 151 MC_SETPROP|MC_GETPROP, /* Which callbacks are set */ 152 vr_mac_getstat, /* Get the value of a statistic */ 153 vr_mac_start, /* Start the device */ 154 vr_mac_stop, /* Stop the device */ 155 vr_mac_set_promisc, /* Enable or disable promiscuous mode */ 156 vr_mac_set_multicast, /* Enable or disable a multicast addr */ 157 vr_mac_set_ether_addr, /* Set the unicast MAC address */ 158 vr_mac_tx_enqueue_list, /* Transmit a packet */ 159 NULL, /* Process an unknown ioctl */ 160 NULL, /* Get capability information */ 161 NULL, /* Open the device */ 162 NULL, /* Close the device */ 163 vr_mac_setprop, /* Set properties of the device */ 164 vr_mac_getprop /* Get properties of the device */ 165 }; 166 167 /* 168 * Table with bugs and features for each incarnation of the card. 169 */ 170 static const chip_info_t vr_chip_info [] = { 171 { 172 0x0, 0x0, 173 "VIA Rhine Fast Ethernet", 174 (VR_BUG_NO_MEMIO), 175 (VR_FEATURE_NONE) 176 }, 177 { 178 0x04, 0x21, 179 "VIA VT86C100A Fast Ethernet", 180 (VR_BUG_NEEDMODE2PCEROPT | VR_BUG_NO_TXQUEUEING | 181 VR_BUG_NEEDMODE10T | VR_BUG_TXALIGN | VR_BUG_NO_MEMIO | 182 VR_BUG_MIIPOLLSTOP), 183 (VR_FEATURE_NONE) 184 }, 185 { 186 0x40, 0x41, 187 "VIA VT6102-A Rhine II Fast Ethernet", 188 (VR_BUG_NEEDMODE2PCEROPT), 189 (VR_FEATURE_RX_PAUSE_CAP) 190 }, 191 { 192 0x42, 0x7f, 193 "VIA VT6102-C Rhine II Fast Ethernet", 194 (VR_BUG_NEEDMODE2PCEROPT), 195 (VR_FEATURE_RX_PAUSE_CAP) 196 }, 197 { 198 0x80, 0x82, 199 "VIA VT6105-A Rhine III Fast Ethernet", 200 (VR_BUG_NONE), 201 (VR_FEATURE_RX_PAUSE_CAP | VR_FEATURE_TX_PAUSE_CAP) 202 }, 203 { 204 0x83, 0x89, 205 "VIA VT6105-B Rhine III Fast Ethernet", 206 (VR_BUG_NONE), 207 (VR_FEATURE_RX_PAUSE_CAP | VR_FEATURE_TX_PAUSE_CAP) 208 }, 209 { 210 0x8a, 0x8b, 211 "VIA VT6105-LOM Rhine III Fast Ethernet", 212 (VR_BUG_NONE), 213 (VR_FEATURE_RX_PAUSE_CAP | VR_FEATURE_TX_PAUSE_CAP) 214 }, 215 { 216 0x8c, 0x8c, 217 "VIA VT6107-A0 Rhine III Fast Ethernet", 218 (VR_BUG_NONE), 219 (VR_FEATURE_RX_PAUSE_CAP | VR_FEATURE_TX_PAUSE_CAP) 220 }, 221 { 222 0x8d, 0x8f, 223 "VIA VT6107-A1 Rhine III Fast Ethernet", 224 (VR_BUG_NONE), 225 (VR_FEATURE_RX_PAUSE_CAP | VR_FEATURE_TX_PAUSE_CAP | 226 VR_FEATURE_MRDLNMULTIPLE) 227 }, 228 { 229 0x90, 0x93, 230 "VIA VT6105M-A0 Rhine III Fast Ethernet Management Adapter", 231 (VR_BUG_NONE), 232 (VR_FEATURE_RX_PAUSE_CAP | VR_FEATURE_TX_PAUSE_CAP | 233 VR_FEATURE_TXCHKSUM | VR_FEATURE_RXCHKSUM | 234 VR_FEATURE_CAMSUPPORT | VR_FEATURE_VLANTAGGING | 235 VR_FEATURE_MIBCOUNTER) 236 }, 237 { 238 0x94, 0xff, 239 "VIA VT6105M-B1 Rhine III Fast Ethernet Management Adapter", 240 (VR_BUG_NONE), 241 (VR_FEATURE_RX_PAUSE_CAP | VR_FEATURE_TX_PAUSE_CAP | 242 VR_FEATURE_TXCHKSUM | VR_FEATURE_RXCHKSUM | 243 VR_FEATURE_CAMSUPPORT | VR_FEATURE_VLANTAGGING | 244 VR_FEATURE_MIBCOUNTER) 245 } 246 }; 247 248 /* 249 * Function prototypes 250 */ 251 static vr_result_t vr_add_intr(vr_t *vrp); 252 static void vr_remove_intr(vr_t *vrp); 253 static int32_t vr_cam_index(vr_t *vrp, const uint8_t *maddr); 254 static uint32_t ether_crc_be(const uint8_t *address); 255 static void vr_tx_enqueue_msg(vr_t *vrp, mblk_t *mp); 256 static void vr_log(vr_t *vrp, int level, const char *fmt, ...); 257 static int vr_resume(dev_info_t *devinfo); 258 static int vr_suspend(dev_info_t *devinfo); 259 static vr_result_t vr_bus_config(vr_t *vrp); 260 static void vr_bus_unconfig(vr_t *vrp); 261 static void vr_reset(vr_t *vrp); 262 static int vr_start(vr_t *vrp); 263 static int vr_stop(vr_t *vrp); 264 static vr_result_t vr_rings_init(vr_t *vrp); 265 static void vr_rings_fini(vr_t *vrp); 266 static vr_result_t vr_alloc_ring(vr_t *vrp, vr_ring_t *r, size_t n); 267 static void vr_free_ring(vr_ring_t *r, size_t n); 268 static vr_result_t vr_rxring_init(vr_t *vrp); 269 static void vr_rxring_fini(vr_t *vrp); 270 static vr_result_t vr_txring_init(vr_t *vrp); 271 static void vr_txring_fini(vr_t *vrp); 272 static vr_result_t vr_alloc_dmabuf(vr_t *vrp, vr_data_dma_t *dmap, 273 uint_t flags); 274 static void vr_free_dmabuf(vr_data_dma_t *dmap); 275 static void vr_param_init(vr_t *vrp); 276 static mblk_t *vr_receive(vr_t *vrp); 277 static void vr_tx_reclaim(vr_t *vrp); 278 static void vr_periodic(void *p); 279 static void vr_error(vr_t *vrp); 280 static void vr_phy_read(vr_t *vrp, int offset, uint16_t *value); 281 static void vr_phy_write(vr_t *vrp, int offset, uint16_t value); 282 static void vr_phy_autopoll_disable(vr_t *vrp); 283 static void vr_phy_autopoll_enable(vr_t *vrp); 284 static void vr_link_init(vr_t *vrp); 285 static void vr_link_state(vr_t *vrp); 286 static void vr_kstats_init(vr_t *vrp); 287 static int vr_update_kstats(kstat_t *ksp, int access); 288 static void vr_remove_kstats(vr_t *vrp); 289 290 static int 291 vr_attach(dev_info_t *devinfo, ddi_attach_cmd_t cmd) 292 { 293 vr_t *vrp; 294 mac_register_t *macreg; 295 296 if (cmd == DDI_RESUME) 297 return (vr_resume(devinfo)); 298 else if (cmd != DDI_ATTACH) 299 return (DDI_FAILURE); 300 301 /* 302 * Attach. 303 */ 304 vrp = kmem_zalloc(sizeof (vr_t), KM_SLEEP); 305 ddi_set_driver_private(devinfo, vrp); 306 vrp->devinfo = devinfo; 307 308 /* 309 * Store the name+instance of the module. 310 */ 311 (void) snprintf(vrp->ifname, sizeof (vrp->ifname), "%s%d", 312 MODULENAME, ddi_get_instance(devinfo)); 313 314 /* 315 * Bus initialization. 316 */ 317 if (vr_bus_config(vrp) != VR_SUCCESS) { 318 vr_log(vrp, CE_WARN, "vr_bus_config failed"); 319 goto fail0; 320 } 321 322 /* 323 * Initialize default parameters. 324 */ 325 vr_param_init(vrp); 326 327 /* 328 * Setup the descriptor rings. 329 */ 330 if (vr_rings_init(vrp) != VR_SUCCESS) { 331 vr_log(vrp, CE_WARN, "vr_rings_init failed"); 332 goto fail1; 333 } 334 335 /* 336 * Initialize kstats. 337 */ 338 vr_kstats_init(vrp); 339 340 /* 341 * Add interrupt to the OS. 342 */ 343 if (vr_add_intr(vrp) != VR_SUCCESS) { 344 vr_log(vrp, CE_WARN, "vr_add_intr failed in attach"); 345 goto fail3; 346 } 347 348 /* 349 * Add mutexes. 350 */ 351 mutex_init(&vrp->intrlock, NULL, MUTEX_DRIVER, 352 DDI_INTR_PRI(vrp->intr_pri)); 353 mutex_init(&vrp->oplock, NULL, MUTEX_DRIVER, NULL); 354 mutex_init(&vrp->tx.lock, NULL, MUTEX_DRIVER, NULL); 355 356 /* 357 * Enable interrupt. 358 */ 359 if (ddi_intr_enable(vrp->intr_hdl) != DDI_SUCCESS) { 360 vr_log(vrp, CE_NOTE, "ddi_intr_enable failed"); 361 goto fail5; 362 } 363 364 /* 365 * Register with parent, mac. 366 */ 367 if ((macreg = mac_alloc(MAC_VERSION)) == NULL) { 368 vr_log(vrp, CE_WARN, "mac_alloc failed in attach"); 369 goto fail6; 370 } 371 372 macreg->m_type_ident = MAC_PLUGIN_IDENT_ETHER; 373 macreg->m_driver = vrp; 374 macreg->m_dip = devinfo; 375 macreg->m_src_addr = vrp->vendor_ether_addr; 376 macreg->m_callbacks = &vr_mac_callbacks; 377 macreg->m_min_sdu = 0; 378 macreg->m_max_sdu = ETHERMTU; 379 macreg->m_margin = VLAN_TAGSZ; 380 381 if (mac_register(macreg, &vrp->machdl) != 0) { 382 vr_log(vrp, CE_WARN, "mac_register failed in attach"); 383 goto fail7; 384 } 385 mac_free(macreg); 386 return (DDI_SUCCESS); 387 388 fail7: 389 mac_free(macreg); 390 fail6: 391 (void) ddi_intr_disable(vrp->intr_hdl); 392 fail5: 393 mutex_destroy(&vrp->tx.lock); 394 mutex_destroy(&vrp->oplock); 395 mutex_destroy(&vrp->intrlock); 396 vr_remove_intr(vrp); 397 fail3: 398 vr_remove_kstats(vrp); 399 fail2: 400 vr_rings_fini(vrp); 401 fail1: 402 vr_bus_unconfig(vrp); 403 fail0: 404 kmem_free(vrp, sizeof (vr_t)); 405 return (DDI_FAILURE); 406 } 407 408 static int 409 vr_detach(dev_info_t *devinfo, ddi_detach_cmd_t cmd) 410 { 411 vr_t *vrp; 412 413 vrp = ddi_get_driver_private(devinfo); 414 415 if (cmd == DDI_SUSPEND) 416 return (vr_suspend(devinfo)); 417 else if (cmd != DDI_DETACH) 418 return (DDI_FAILURE); 419 420 if (vrp->chip.state == CHIPSTATE_RUNNING) 421 return (DDI_FAILURE); 422 423 /* 424 * Try to un-register from the MAC layer. 425 */ 426 if (mac_unregister(vrp->machdl) != 0) 427 return (DDI_FAILURE); 428 429 (void) ddi_intr_disable(vrp->intr_hdl); 430 vr_remove_intr(vrp); 431 mutex_destroy(&vrp->tx.lock); 432 mutex_destroy(&vrp->oplock); 433 mutex_destroy(&vrp->intrlock); 434 vr_remove_kstats(vrp); 435 vr_rings_fini(vrp); 436 vr_bus_unconfig(vrp); 437 kmem_free(vrp, sizeof (vr_t)); 438 return (DDI_SUCCESS); 439 } 440 441 /* 442 * quiesce the card for fast reboot. 443 */ 444 int 445 vr_quiesce(dev_info_t *dev_info) 446 { 447 vr_t *vrp; 448 449 vrp = (vr_t *)ddi_get_driver_private(dev_info); 450 451 /* 452 * Stop interrupts. 453 */ 454 VR_PUT16(vrp->acc_reg, VR_ICR0, 0); 455 VR_PUT8(vrp->acc_reg, VR_ICR1, 0); 456 457 /* 458 * Stop DMA. 459 */ 460 VR_PUT8(vrp->acc_reg, VR_CTRL0, VR_CTRL0_DMA_STOP); 461 return (DDI_SUCCESS); 462 } 463 464 /* 465 * Add an interrupt for our device to the OS. 466 */ 467 static vr_result_t 468 vr_add_intr(vr_t *vrp) 469 { 470 int nintrs; 471 int rc; 472 473 rc = ddi_intr_alloc(vrp->devinfo, &vrp->intr_hdl, 474 DDI_INTR_TYPE_FIXED, /* type */ 475 0, /* number */ 476 1, /* count */ 477 &nintrs, /* actualp */ 478 DDI_INTR_ALLOC_STRICT); 479 480 if (rc != DDI_SUCCESS) { 481 vr_log(vrp, CE_NOTE, "ddi_intr_alloc failed: %d", rc); 482 return (VR_FAILURE); 483 } 484 485 rc = ddi_intr_add_handler(vrp->intr_hdl, vr_intr, vrp, NULL); 486 if (rc != DDI_SUCCESS) { 487 vr_log(vrp, CE_NOTE, "ddi_intr_add_handler failed"); 488 if (ddi_intr_free(vrp->intr_hdl) != DDI_SUCCESS) 489 vr_log(vrp, CE_NOTE, "ddi_intr_free failed"); 490 return (VR_FAILURE); 491 } 492 493 rc = ddi_intr_get_pri(vrp->intr_hdl, &vrp->intr_pri); 494 if (rc != DDI_SUCCESS) { 495 vr_log(vrp, CE_NOTE, "ddi_intr_get_pri failed"); 496 if (ddi_intr_remove_handler(vrp->intr_hdl) != DDI_SUCCESS) 497 vr_log(vrp, CE_NOTE, "ddi_intr_remove_handler failed"); 498 499 if (ddi_intr_free(vrp->intr_hdl) != DDI_SUCCESS) 500 vr_log(vrp, CE_NOTE, "ddi_intr_free failed"); 501 502 return (VR_FAILURE); 503 } 504 return (VR_SUCCESS); 505 } 506 507 /* 508 * Remove our interrupt from the OS. 509 */ 510 static void 511 vr_remove_intr(vr_t *vrp) 512 { 513 if (ddi_intr_remove_handler(vrp->intr_hdl) != DDI_SUCCESS) 514 vr_log(vrp, CE_NOTE, "ddi_intr_remove_handler failed"); 515 516 if (ddi_intr_free(vrp->intr_hdl) != DDI_SUCCESS) 517 vr_log(vrp, CE_NOTE, "ddi_intr_free failed"); 518 } 519 520 /* 521 * Resume operation after suspend. 522 */ 523 static int 524 vr_resume(dev_info_t *devinfo) 525 { 526 vr_t *vrp; 527 528 vrp = (vr_t *)ddi_get_driver_private(devinfo); 529 mutex_enter(&vrp->oplock); 530 if (vrp->chip.state == CHIPSTATE_SUSPENDED_RUNNING) 531 vr_start(vrp); 532 mutex_exit(&vrp->oplock); 533 return (DDI_SUCCESS); 534 } 535 536 /* 537 * Suspend operation. 538 */ 539 static int 540 vr_suspend(dev_info_t *devinfo) 541 { 542 vr_t *vrp; 543 544 vrp = (vr_t *)ddi_get_driver_private(devinfo); 545 mutex_enter(&vrp->oplock); 546 if (vrp->chip.state == CHIPSTATE_RUNNING) { 547 (void) vr_stop(vrp); 548 vrp->chip.state = CHIPSTATE_SUSPENDED_RUNNING; 549 } 550 mutex_exit(&vrp->oplock); 551 return (DDI_SUCCESS); 552 } 553 554 /* 555 * Initial bus- and device configuration during attach(9E). 556 */ 557 static vr_result_t 558 vr_bus_config(vr_t *vrp) 559 { 560 uint32_t addr; 561 int n, nsets, rc; 562 uint_t elem; 563 pci_regspec_t *regs; 564 565 /* 566 * Get the reg property which describes the various access methods. 567 */ 568 if (ddi_prop_lookup_int_array(DDI_DEV_T_ANY, vrp->devinfo, 569 0, "reg", (int **)®s, &elem) != DDI_PROP_SUCCESS) { 570 vr_log(vrp, CE_WARN, "Can't get reg property"); 571 return (VR_FAILURE); 572 } 573 nsets = (elem * sizeof (uint_t)) / sizeof (pci_regspec_t); 574 575 /* 576 * Setup access to all available sets. 577 */ 578 vrp->nsets = nsets; 579 vrp->regset = kmem_zalloc(nsets * sizeof (vr_acc_t), KM_SLEEP); 580 for (n = 0; n < nsets; n++) { 581 rc = ddi_regs_map_setup(vrp->devinfo, n, 582 &vrp->regset[n].addr, 0, 0, 583 &vr_dev_dma_accattr, 584 &vrp->regset[n].hdl); 585 if (rc != DDI_SUCCESS) { 586 vr_log(vrp, CE_NOTE, 587 "Setup of register set %d failed", n); 588 while (--n >= 0) 589 ddi_regs_map_free(&vrp->regset[n].hdl); 590 kmem_free(vrp->regset, nsets * sizeof (vr_acc_t)); 591 ddi_prop_free(regs); 592 return (VR_FAILURE); 593 } 594 bcopy(®s[n], &vrp->regset[n].reg, sizeof (pci_regspec_t)); 595 } 596 ddi_prop_free(regs); 597 598 /* 599 * Assign type-named pointers to the register sets. 600 */ 601 for (n = 0; n < nsets; n++) { 602 addr = vrp->regset[n].reg.pci_phys_hi & PCI_REG_ADDR_M; 603 if (addr == PCI_ADDR_CONFIG && vrp->acc_cfg == NULL) 604 vrp->acc_cfg = &vrp->regset[n]; 605 else if (addr == PCI_ADDR_IO && vrp->acc_io == NULL) 606 vrp->acc_io = &vrp->regset[n]; 607 else if (addr == PCI_ADDR_MEM32 && vrp->acc_mem == NULL) 608 vrp->acc_mem = &vrp->regset[n]; 609 } 610 611 /* 612 * Assure there is one of each type. 613 */ 614 if (vrp->acc_cfg == NULL || 615 vrp->acc_io == NULL || 616 vrp->acc_mem == NULL) { 617 for (n = 0; n < nsets; n++) 618 ddi_regs_map_free(&vrp->regset[n].hdl); 619 kmem_free(vrp->regset, nsets * sizeof (vr_acc_t)); 620 vr_log(vrp, CE_WARN, 621 "Config-, I/O- and memory sets not available"); 622 return (VR_FAILURE); 623 } 624 625 /* 626 * Store vendor/device/revision. 627 */ 628 vrp->chip.vendor = VR_GET16(vrp->acc_cfg, PCI_CONF_VENID); 629 vrp->chip.device = VR_GET16(vrp->acc_cfg, PCI_CONF_DEVID); 630 vrp->chip.revision = VR_GET16(vrp->acc_cfg, PCI_CONF_REVID); 631 632 /* 633 * Copy the matching chip_info_t structure. 634 */ 635 elem = sizeof (vr_chip_info) / sizeof (chip_info_t); 636 for (n = 0; n < elem; n++) { 637 if (vrp->chip.revision >= vr_chip_info[n].revmin && 638 vrp->chip.revision <= vr_chip_info[n].revmax) { 639 bcopy((void*)&vr_chip_info[n], 640 (void*)&vrp->chip.info, 641 sizeof (chip_info_t)); 642 break; 643 } 644 } 645 646 /* 647 * If we didn't find a chip_info_t for this card, copy the first 648 * entry of the info structures. This is a generic Rhine whith no 649 * bugs and no features. 650 */ 651 if (vrp->chip.info.name == NULL) { 652 bcopy((void*)&vr_chip_info[0], 653 (void*) &vrp->chip.info, 654 sizeof (chip_info_t)); 655 } 656 657 /* 658 * Tell what is found. 659 */ 660 vr_log(vrp, CE_NOTE, "pci%d,%d,%d: %s, revision 0x%0x", 661 PCI_REG_BUS_G(vrp->acc_cfg->reg.pci_phys_hi), 662 PCI_REG_DEV_G(vrp->acc_cfg->reg.pci_phys_hi), 663 PCI_REG_FUNC_G(vrp->acc_cfg->reg.pci_phys_hi), 664 vrp->chip.info.name, 665 vrp->chip.revision); 666 667 /* 668 * Assure that the device is prepared for memory space accesses 669 * This should be the default as the device advertises memory 670 * access in it's BAR's. However, my VT6102 on a EPIA CL board doesn't 671 * and thus we explicetely enable it. 672 */ 673 VR_SETBIT8(vrp->acc_io, VR_CFGD, VR_CFGD_MMIOEN); 674 675 /* 676 * Setup a handle for regular usage, prefer memory space accesses. 677 */ 678 if (vrp->acc_mem != NULL && 679 (vrp->chip.info.bugs & VR_BUG_NO_MEMIO) == 0) 680 vrp->acc_reg = vrp->acc_mem; 681 else 682 vrp->acc_reg = vrp->acc_io; 683 684 /* 685 * Store the vendor's MAC address. 686 */ 687 for (n = 0; n < ETHERADDRL; n++) { 688 vrp->vendor_ether_addr[n] = VR_GET8(vrp->acc_reg, 689 VR_ETHERADDR + n); 690 } 691 return (VR_SUCCESS); 692 } 693 694 static void 695 vr_bus_unconfig(vr_t *vrp) 696 { 697 uint_t n; 698 699 /* 700 * Free the register access handles. 701 */ 702 for (n = 0; n < vrp->nsets; n++) 703 ddi_regs_map_free(&vrp->regset[n].hdl); 704 kmem_free(vrp->regset, vrp->nsets * sizeof (vr_acc_t)); 705 } 706 707 /* 708 * Initialize parameter structures. 709 */ 710 static void 711 vr_param_init(vr_t *vrp) 712 { 713 /* 714 * Initialize default link configuration parameters. 715 */ 716 vrp->param.an_en = VR_LINK_AUTONEG_ON; 717 vrp->param.anadv_en = 1; /* Select 802.3 autonegotiation */ 718 vrp->param.anadv_en |= MII_ABILITY_100BASE_T4; 719 vrp->param.anadv_en |= MII_ABILITY_100BASE_TX_FD; 720 vrp->param.anadv_en |= MII_ABILITY_100BASE_TX; 721 vrp->param.anadv_en |= MII_ABILITY_10BASE_T_FD; 722 vrp->param.anadv_en |= MII_ABILITY_10BASE_T; 723 /* Not a PHY ability, but advertised on behalf of MAC */ 724 vrp->param.anadv_en |= MII_ABILITY_PAUSE; 725 vrp->param.mtu = ETHERMTU; 726 727 /* 728 * Store the PHY identity. 729 */ 730 vr_phy_read(vrp, MII_PHYIDH, &vrp->chip.mii.identh); 731 vr_phy_read(vrp, MII_PHYIDL, &vrp->chip.mii.identl); 732 733 /* 734 * Clear incapabilities imposed by PHY in phymask. 735 */ 736 vrp->param.an_phymask = vrp->param.anadv_en; 737 vr_phy_read(vrp, MII_STATUS, &vrp->chip.mii.status); 738 if ((vrp->chip.mii.status & MII_STATUS_10) == 0) 739 vrp->param.an_phymask &= ~MII_ABILITY_10BASE_T; 740 741 if ((vrp->chip.mii.status & MII_STATUS_10_FD) == 0) 742 vrp->param.an_phymask &= ~MII_ABILITY_10BASE_T_FD; 743 744 if ((vrp->chip.mii.status & MII_STATUS_100_BASEX) == 0) 745 vrp->param.an_phymask &= ~MII_ABILITY_100BASE_TX; 746 747 if ((vrp->chip.mii.status & MII_STATUS_100_BASEX_FD) == 0) 748 vrp->param.an_phymask &= ~MII_ABILITY_100BASE_TX_FD; 749 750 if ((vrp->chip.mii.status & MII_STATUS_100_BASE_T4) == 0) 751 vrp->param.an_phymask &= ~MII_ABILITY_100BASE_T4; 752 753 /* 754 * Clear incapabilities imposed by MAC in macmask 755 * Note that flowcontrol (FCS?) is never masked. All of our adapters 756 * have the ability to honor incoming pause frames. Only the newer can 757 * transmit pause frames. Since there's no asym flowcontrol in 100Mbit 758 * Ethernet, we always advertise (symmetric) pause. 759 */ 760 vrp->param.an_macmask = vrp->param.anadv_en; 761 762 /* 763 * Advertised capabilities is enabled minus incapable. 764 */ 765 vrp->chip.mii.anadv = vrp->param.anadv_en & 766 (vrp->param.an_phymask & vrp->param.an_macmask); 767 768 /* 769 * Ensure that autoneg of the PHY matches our default. 770 */ 771 if (vrp->param.an_en == VR_LINK_AUTONEG_ON) 772 vrp->chip.mii.control = MII_CONTROL_ANE; 773 else 774 vrp->chip.mii.control = 775 (MII_CONTROL_100MB | MII_CONTROL_FDUPLEX); 776 } 777 778 /* 779 * Setup the descriptor rings. 780 */ 781 static vr_result_t 782 vr_rings_init(vr_t *vrp) 783 { 784 785 vrp->rx.ndesc = VR_RX_N_DESC; 786 vrp->tx.ndesc = VR_TX_N_DESC; 787 788 /* 789 * Create a ring for receive. 790 */ 791 if (vr_alloc_ring(vrp, &vrp->rxring, vrp->rx.ndesc) != VR_SUCCESS) 792 return (VR_FAILURE); 793 794 /* 795 * Create a ring for transmit. 796 */ 797 if (vr_alloc_ring(vrp, &vrp->txring, vrp->tx.ndesc) != VR_SUCCESS) { 798 vr_free_ring(&vrp->rxring, vrp->rx.ndesc); 799 return (VR_FAILURE); 800 } 801 802 vrp->rx.ring = vrp->rxring.desc; 803 vrp->tx.ring = vrp->txring.desc; 804 return (VR_SUCCESS); 805 } 806 807 static void 808 vr_rings_fini(vr_t *vrp) 809 { 810 vr_free_ring(&vrp->rxring, vrp->rx.ndesc); 811 vr_free_ring(&vrp->txring, vrp->tx.ndesc); 812 } 813 814 /* 815 * Allocate a descriptor ring 816 * The number of descriptor entries must fit in a single page so that the 817 * whole ring fits in one consequtive space. 818 * i386: 4K page / 16 byte descriptor = 256 entries 819 * sparc: 8K page / 16 byte descriptor = 512 entries 820 */ 821 static vr_result_t 822 vr_alloc_ring(vr_t *vrp, vr_ring_t *ring, size_t n) 823 { 824 ddi_dma_cookie_t desc_dma_cookie; 825 uint_t desc_cookiecnt; 826 int i, rc; 827 size_t rbytes; 828 829 /* 830 * Allocate a DMA handle for the chip descriptors. 831 */ 832 rc = ddi_dma_alloc_handle(vrp->devinfo, 833 &vr_dev_dma_attr, 834 DDI_DMA_SLEEP, 835 NULL, 836 &ring->handle); 837 838 if (rc != DDI_SUCCESS) { 839 vr_log(vrp, CE_WARN, 840 "ddi_dma_alloc_handle in vr_alloc_ring failed."); 841 return (VR_FAILURE); 842 } 843 844 /* 845 * Allocate memory for the chip descriptors. 846 */ 847 rc = ddi_dma_mem_alloc(ring->handle, 848 n * sizeof (vr_chip_desc_t), 849 &vr_dev_dma_accattr, 850 DDI_DMA_CONSISTENT, 851 DDI_DMA_SLEEP, 852 NULL, 853 (caddr_t *)&ring->cdesc, 854 &rbytes, 855 &ring->acchdl); 856 857 if (rc != DDI_SUCCESS) { 858 vr_log(vrp, CE_WARN, 859 "ddi_dma_mem_alloc in vr_alloc_ring failed."); 860 ddi_dma_free_handle(&ring->handle); 861 return (VR_FAILURE); 862 } 863 864 /* 865 * Map the descriptor memory. 866 */ 867 rc = ddi_dma_addr_bind_handle(ring->handle, 868 NULL, 869 (caddr_t)ring->cdesc, 870 rbytes, 871 DDI_DMA_RDWR | DDI_DMA_CONSISTENT, 872 DDI_DMA_SLEEP, 873 NULL, 874 &desc_dma_cookie, 875 &desc_cookiecnt); 876 877 if (rc != DDI_DMA_MAPPED || desc_cookiecnt > 1) { 878 vr_log(vrp, CE_WARN, 879 "ddi_dma_addr_bind_handle in vr_alloc_ring failed: " 880 "rc = %d, cookiecnt = %d", rc, desc_cookiecnt); 881 ddi_dma_mem_free(&ring->acchdl); 882 ddi_dma_free_handle(&ring->handle); 883 return (VR_FAILURE); 884 } 885 ring->cdesc_paddr = desc_dma_cookie.dmac_address; 886 887 /* 888 * Allocate memory for the host descriptor ring. 889 */ 890 ring->desc = 891 (vr_desc_t *)kmem_zalloc(n * sizeof (vr_desc_t), KM_SLEEP); 892 893 /* 894 * Interlink the descriptors and connect host- to chip descriptors. 895 */ 896 for (i = 0; i < n; i++) { 897 /* 898 * Connect the host descriptor to a chip descriptor. 899 */ 900 ring->desc[i].cdesc = &ring->cdesc[i]; 901 902 /* 903 * Store the DMA address and offset in the descriptor 904 * Offset is for ddi_dma_sync() and paddr is for ddi_get/-put(). 905 */ 906 ring->desc[i].offset = i * sizeof (vr_chip_desc_t); 907 ring->desc[i].paddr = ring->cdesc_paddr + ring->desc[i].offset; 908 909 /* 910 * Link the previous descriptor to this one. 911 */ 912 if (i > 0) { 913 /* Host */ 914 ring->desc[i-1].next = &ring->desc[i]; 915 916 /* Chip */ 917 ddi_put32(ring->acchdl, 918 &ring->cdesc[i-1].next, 919 ring->desc[i].paddr); 920 } 921 } 922 923 /* 924 * Make rings out of this list by pointing last to first. 925 */ 926 i = n - 1; 927 ring->desc[i].next = &ring->desc[0]; 928 ddi_put32(ring->acchdl, &ring->cdesc[i].next, ring->desc[0].paddr); 929 return (VR_SUCCESS); 930 } 931 932 /* 933 * Free the memory allocated for a ring. 934 */ 935 static void 936 vr_free_ring(vr_ring_t *r, size_t n) 937 { 938 /* 939 * Unmap and free the chip descriptors. 940 */ 941 (void) ddi_dma_unbind_handle(r->handle); 942 ddi_dma_mem_free(&r->acchdl); 943 ddi_dma_free_handle(&r->handle); 944 945 /* 946 * Free the memory for storing host descriptors 947 */ 948 kmem_free(r->desc, n * sizeof (vr_desc_t)); 949 } 950 951 /* 952 * Initialize the receive ring. 953 */ 954 static vr_result_t 955 vr_rxring_init(vr_t *vrp) 956 { 957 int i, rc; 958 vr_desc_t *rp; 959 960 /* 961 * Set the read pointer at the start of the ring. 962 */ 963 vrp->rx.rp = &vrp->rx.ring[0]; 964 965 /* 966 * Assign a DMA buffer to each receive descriptor. 967 */ 968 for (i = 0; i < vrp->rx.ndesc; i++) { 969 rp = &vrp->rx.ring[i]; 970 rc = vr_alloc_dmabuf(vrp, 971 &vrp->rx.ring[i].dmabuf, 972 DDI_DMA_STREAMING | DDI_DMA_READ); 973 974 if (rc != VR_SUCCESS) { 975 while (--i >= 0) 976 vr_free_dmabuf(&vrp->rx.ring[i].dmabuf); 977 return (VR_FAILURE); 978 } 979 980 /* 981 * Store the address of the dma buffer in the chip descriptor 982 */ 983 ddi_put32(vrp->rxring.acchdl, 984 &rp->cdesc->data, 985 rp->dmabuf.paddr); 986 987 /* 988 * Put the buffer length in the chip descriptor. Ensure that 989 * length fits in the 11 bits of stat1 (2047/0x7FF) 990 */ 991 ddi_put32(vrp->rxring.acchdl, &rp->cdesc->stat1, 992 MIN(VR_MAX_PKTSZ, rp->dmabuf.bufsz)); 993 994 /* 995 * Set descriptor ownership to the card 996 */ 997 ddi_put32(vrp->rxring.acchdl, &rp->cdesc->stat0, VR_RDES0_OWN); 998 999 /* 1000 * Sync the descriptor with main memory 1001 */ 1002 (void) ddi_dma_sync(vrp->rxring.handle, rp->offset, 1003 sizeof (vr_chip_desc_t), DDI_DMA_SYNC_FORDEV); 1004 } 1005 return (VR_SUCCESS); 1006 } 1007 1008 /* 1009 * Free the DMA buffers assigned to the receive ring. 1010 */ 1011 static void 1012 vr_rxring_fini(vr_t *vrp) 1013 { 1014 int i; 1015 1016 for (i = 0; i < vrp->rx.ndesc; i++) 1017 vr_free_dmabuf(&vrp->rx.ring[i].dmabuf); 1018 } 1019 1020 static vr_result_t 1021 vr_txring_init(vr_t *vrp) 1022 { 1023 vr_desc_t *wp; 1024 int i, rc; 1025 1026 /* 1027 * Set the write- and claim pointer. 1028 */ 1029 vrp->tx.wp = &vrp->tx.ring[0]; 1030 vrp->tx.cp = &vrp->tx.ring[0]; 1031 1032 /* 1033 * (Re)set the TX bookkeeping. 1034 */ 1035 vrp->tx.stallticks = 0; 1036 vrp->tx.resched = 0; 1037 1038 /* 1039 * Every transmit decreases nfree. Every reclaim increases nfree. 1040 */ 1041 vrp->tx.nfree = vrp->tx.ndesc; 1042 1043 /* 1044 * Attach a DMA buffer to each transmit descriptor. 1045 */ 1046 for (i = 0; i < vrp->tx.ndesc; i++) { 1047 rc = vr_alloc_dmabuf(vrp, 1048 &vrp->tx.ring[i].dmabuf, 1049 DDI_DMA_STREAMING | DDI_DMA_WRITE); 1050 1051 if (rc != VR_SUCCESS) { 1052 while (--i >= 0) 1053 vr_free_dmabuf(&vrp->tx.ring[i].dmabuf); 1054 return (VR_FAILURE); 1055 } 1056 } 1057 1058 /* 1059 * Init & sync the TX descriptors so the device sees a valid ring. 1060 */ 1061 for (i = 0; i < vrp->tx.ndesc; i++) { 1062 wp = &vrp->tx.ring[i]; 1063 ddi_put32(vrp->txring.acchdl, &wp->cdesc->stat0, 0); 1064 ddi_put32(vrp->txring.acchdl, &wp->cdesc->stat1, 0); 1065 ddi_put32(vrp->txring.acchdl, &wp->cdesc->data, 1066 wp->dmabuf.paddr); 1067 (void) ddi_dma_sync(vrp->txring.handle, wp->offset, 1068 sizeof (vr_chip_desc_t), 1069 DDI_DMA_SYNC_FORDEV); 1070 } 1071 return (VR_SUCCESS); 1072 } 1073 1074 /* 1075 * Free the DMA buffers attached to the TX ring. 1076 */ 1077 static void 1078 vr_txring_fini(vr_t *vrp) 1079 { 1080 int i; 1081 1082 /* 1083 * Free the DMA buffers attached to the TX ring 1084 */ 1085 for (i = 0; i < vrp->tx.ndesc; i++) 1086 vr_free_dmabuf(&vrp->tx.ring[i].dmabuf); 1087 } 1088 1089 /* 1090 * Allocate a DMA buffer. 1091 */ 1092 static vr_result_t 1093 vr_alloc_dmabuf(vr_t *vrp, vr_data_dma_t *dmap, uint_t dmaflags) 1094 { 1095 ddi_dma_cookie_t dma_cookie; 1096 uint_t cookiecnt; 1097 int rc; 1098 1099 /* 1100 * Allocate a DMA handle for the buffer 1101 */ 1102 rc = ddi_dma_alloc_handle(vrp->devinfo, 1103 &vr_data_dma_attr, 1104 DDI_DMA_DONTWAIT, NULL, 1105 &dmap->handle); 1106 1107 if (rc != DDI_SUCCESS) { 1108 vr_log(vrp, CE_WARN, 1109 "ddi_dma_alloc_handle failed in vr_alloc_dmabuf"); 1110 return (VR_FAILURE); 1111 } 1112 1113 /* 1114 * Allocate the buffer 1115 * The allocated buffer is aligned on 2K boundary. This ensures that 1116 * a 1500 byte frame never cross a page boundary and thus that the DMA 1117 * mapping can be established in 1 fragment. 1118 */ 1119 rc = ddi_dma_mem_alloc(dmap->handle, 1120 VR_DMABUFSZ, 1121 &vr_data_dma_accattr, 1122 DDI_DMA_RDWR | DDI_DMA_STREAMING, 1123 DDI_DMA_DONTWAIT, NULL, 1124 &dmap->buf, 1125 &dmap->bufsz, 1126 &dmap->acchdl); 1127 1128 if (rc != DDI_SUCCESS) { 1129 vr_log(vrp, CE_WARN, 1130 "ddi_dma_mem_alloc failed in vr_alloc_dmabuf"); 1131 ddi_dma_free_handle(&dmap->handle); 1132 return (VR_FAILURE); 1133 } 1134 1135 /* 1136 * Map the memory 1137 */ 1138 rc = ddi_dma_addr_bind_handle(dmap->handle, 1139 NULL, 1140 (caddr_t)dmap->buf, 1141 dmap->bufsz, 1142 dmaflags, 1143 DDI_DMA_DONTWAIT, 1144 NULL, 1145 &dma_cookie, 1146 &cookiecnt); 1147 1148 /* 1149 * The cookiecount should never > 1 because we requested 2K alignment 1150 */ 1151 if (rc != DDI_DMA_MAPPED || cookiecnt > 1) { 1152 vr_log(vrp, CE_WARN, 1153 "dma_addr_bind_handle failed in vr_alloc_dmabuf: " 1154 "rc = %d, cookiecnt = %d", rc, cookiecnt); 1155 ddi_dma_mem_free(&dmap->acchdl); 1156 ddi_dma_free_handle(&dmap->handle); 1157 return (VR_FAILURE); 1158 } 1159 dmap->paddr = dma_cookie.dmac_address; 1160 return (VR_SUCCESS); 1161 } 1162 1163 /* 1164 * Destroy a DMA buffer. 1165 */ 1166 static void 1167 vr_free_dmabuf(vr_data_dma_t *dmap) 1168 { 1169 (void) ddi_dma_unbind_handle(dmap->handle); 1170 ddi_dma_mem_free(&dmap->acchdl); 1171 ddi_dma_free_handle(&dmap->handle); 1172 } 1173 1174 /* 1175 * Interrupt service routine 1176 * When our vector is shared with another device, av_dispatch_autovect calls 1177 * all service routines for the vector until *none* of them return claimed 1178 * That means that, when sharing vectors, this routine is called at least 1179 * twice for each interrupt. 1180 */ 1181 uint_t 1182 vr_intr(caddr_t arg1, caddr_t arg2) 1183 { 1184 vr_t *vrp; 1185 uint16_t status; 1186 mblk_t *lp = NULL; 1187 uint32_t tx_resched; 1188 uint32_t link_change; 1189 1190 tx_resched = 0; 1191 link_change = 0; 1192 vrp = (void *)arg1; 1193 _NOTE(ARGUNUSED(arg2)) 1194 1195 /* 1196 * Read the status register to see if the interrupt is from our device 1197 * This read also ensures that posted writes are brought to main memory. 1198 */ 1199 mutex_enter(&vrp->intrlock); 1200 status = VR_GET16(vrp->acc_reg, VR_ISR0) & VR_ICR0_CFG; 1201 if (status == 0) { 1202 /* 1203 * Status contains no configured interrupts 1204 * The interrupt was not generated by our device. 1205 */ 1206 vrp->stats.intr_unclaimed++; 1207 mutex_exit(&vrp->intrlock); 1208 return (DDI_INTR_UNCLAIMED); 1209 } 1210 vrp->stats.intr_claimed++; 1211 1212 /* 1213 * Acknowledge the event(s) that caused interruption. 1214 */ 1215 VR_PUT16(vrp->acc_reg, VR_ISR0, status); 1216 1217 /* 1218 * Receive completion. 1219 */ 1220 if ((status & (VR_ISR0_RX_DONE | VR_ISR_RX_ERR_BITS)) != 0) { 1221 /* 1222 * Received some packets. 1223 */ 1224 lp = vr_receive(vrp); 1225 1226 /* 1227 * DMA stops after a conflict in the FIFO. 1228 */ 1229 if ((status & VR_ISR_RX_ERR_BITS) != 0) 1230 VR_PUT8(vrp->acc_reg, VR_CTRL0, VR_CTRL0_DMA_GO); 1231 status &= ~(VR_ISR0_RX_DONE | VR_ISR_RX_ERR_BITS); 1232 } 1233 1234 /* 1235 * Transmit completion. 1236 */ 1237 if ((status & (VR_ISR0_TX_DONE | VR_ISR_TX_ERR_BITS)) != 0) { 1238 /* 1239 * Card done with transmitting some packets 1240 * TX_DONE is generated 3 times per ring but it appears 1241 * more often because it is also set when an RX_DONE 1242 * interrupt is generated. 1243 */ 1244 mutex_enter(&vrp->tx.lock); 1245 vr_tx_reclaim(vrp); 1246 tx_resched = vrp->tx.resched; 1247 vrp->tx.resched = 0; 1248 mutex_exit(&vrp->tx.lock); 1249 status &= ~(VR_ISR0_TX_DONE | VR_ISR_TX_ERR_BITS); 1250 } 1251 1252 /* 1253 * Link status change. 1254 */ 1255 if ((status & VR_ICR0_LINKSTATUS) != 0) { 1256 /* 1257 * Get new link state and inform the mac layer. 1258 */ 1259 mutex_enter(&vrp->oplock); 1260 mutex_enter(&vrp->tx.lock); 1261 vr_link_state(vrp); 1262 mutex_exit(&vrp->tx.lock); 1263 mutex_exit(&vrp->oplock); 1264 status &= ~VR_ICR0_LINKSTATUS; 1265 vrp->stats.linkchanges++; 1266 link_change = 1; 1267 } 1268 1269 /* 1270 * Bus error. 1271 */ 1272 if ((status & VR_ISR0_BUSERR) != 0) { 1273 vr_log(vrp, CE_WARN, "bus error occured"); 1274 vrp->reset = 1; 1275 status &= ~VR_ISR0_BUSERR; 1276 } 1277 1278 /* 1279 * We must have handled all things here. 1280 */ 1281 ASSERT(status == 0); 1282 mutex_exit(&vrp->intrlock); 1283 1284 /* 1285 * Reset the device if requested 1286 * The request can come from the periodic tx check or from the interrupt 1287 * status. 1288 */ 1289 if (vrp->reset != 0) { 1290 vr_error(vrp); 1291 vrp->reset = 0; 1292 } 1293 1294 /* 1295 * Pass up the list with received packets. 1296 */ 1297 if (lp != NULL) 1298 mac_rx(vrp->machdl, 0, lp); 1299 1300 /* 1301 * Inform the upper layer on the linkstatus if there was a change. 1302 */ 1303 if (link_change != 0) 1304 mac_link_update(vrp->machdl, 1305 (link_state_t)vrp->chip.link.state); 1306 /* 1307 * Restart transmissions if we were waiting for tx descriptors. 1308 */ 1309 if (tx_resched == 1) 1310 mac_tx_update(vrp->machdl); 1311 1312 /* 1313 * Read something from the card to ensure that all of our configuration 1314 * writes are delivered to the device before the interrupt is ended. 1315 */ 1316 (void) VR_GET8(vrp->acc_reg, VR_ETHERADDR); 1317 return (DDI_INTR_CLAIMED); 1318 } 1319 1320 /* 1321 * Respond to an unforseen situation by resetting the card and our bookkeeping. 1322 */ 1323 static void 1324 vr_error(vr_t *vrp) 1325 { 1326 vr_log(vrp, CE_WARN, "resetting MAC."); 1327 mutex_enter(&vrp->intrlock); 1328 mutex_enter(&vrp->oplock); 1329 mutex_enter(&vrp->tx.lock); 1330 (void) vr_stop(vrp); 1331 vr_reset(vrp); 1332 (void) vr_start(vrp); 1333 mutex_exit(&vrp->tx.lock); 1334 mutex_exit(&vrp->oplock); 1335 mutex_exit(&vrp->intrlock); 1336 vrp->stats.resets++; 1337 } 1338 1339 /* 1340 * Collect received packets in a list. 1341 */ 1342 static mblk_t * 1343 vr_receive(vr_t *vrp) 1344 { 1345 mblk_t *lp, *mp, *np; 1346 vr_desc_t *rxp; 1347 vr_data_dma_t *dmap; 1348 uint32_t pklen; 1349 uint32_t rxstat0; 1350 uint32_t n; 1351 1352 lp = NULL; 1353 n = 0; 1354 for (rxp = vrp->rx.rp; ; rxp = rxp->next, n++) { 1355 /* 1356 * Sync the descriptor before looking at it. 1357 */ 1358 (void) ddi_dma_sync(vrp->rxring.handle, rxp->offset, 1359 sizeof (vr_chip_desc_t), DDI_DMA_SYNC_FORKERNEL); 1360 1361 /* 1362 * Get the status from the descriptor. 1363 */ 1364 rxstat0 = ddi_get32(vrp->rxring.acchdl, &rxp->cdesc->stat0); 1365 1366 /* 1367 * We're done if the descriptor is owned by the card. 1368 */ 1369 if ((rxstat0 & VR_RDES0_OWN) != 0) 1370 break; 1371 else if ((rxstat0 & VR_RDES0_RXOK) != 0) { 1372 /* 1373 * Received a good packet 1374 */ 1375 dmap = &rxp->dmabuf; 1376 pklen = (rxstat0 >> 16) - ETHERFCSL; 1377 1378 /* 1379 * Sync the data. 1380 */ 1381 (void) ddi_dma_sync(dmap->handle, 0, 1382 pklen, DDI_DMA_SYNC_FORKERNEL); 1383 1384 /* 1385 * Send a new copied message upstream. 1386 */ 1387 np = allocb(pklen, 0); 1388 if (np != NULL) { 1389 bcopy(dmap->buf, np->b_rptr, pklen); 1390 np->b_wptr = np->b_rptr + pklen; 1391 1392 vrp->stats.mac_stat_ipackets++; 1393 vrp->stats.mac_stat_rbytes += pklen; 1394 1395 if ((rxstat0 & VR_RDES0_BAR) != 0) 1396 vrp->stats.mac_stat_brdcstrcv++; 1397 else if ((rxstat0 & VR_RDES0_MAR) != 0) 1398 vrp->stats.mac_stat_multircv++; 1399 1400 /* 1401 * Link this packet in the list. 1402 */ 1403 np->b_next = NULL; 1404 if (lp == NULL) 1405 lp = mp = np; 1406 else { 1407 mp->b_next = np; 1408 mp = np; 1409 } 1410 } else { 1411 vrp->stats.allocbfail++; 1412 vrp->stats.mac_stat_norcvbuf++; 1413 } 1414 1415 } else { 1416 /* 1417 * Received with errors. 1418 */ 1419 vrp->stats.mac_stat_ierrors++; 1420 if ((rxstat0 & VR_RDES0_FAE) != 0) 1421 vrp->stats.ether_stat_align_errors++; 1422 if ((rxstat0 & VR_RDES0_CRCERR) != 0) 1423 vrp->stats.ether_stat_fcs_errors++; 1424 if ((rxstat0 & VR_RDES0_LONG) != 0) 1425 vrp->stats.ether_stat_toolong_errors++; 1426 if ((rxstat0 & VR_RDES0_RUNT) != 0) 1427 vrp->stats.ether_stat_tooshort_errors++; 1428 if ((rxstat0 & VR_RDES0_FOV) != 0) 1429 vrp->stats.mac_stat_overflows++; 1430 } 1431 1432 /* 1433 * Reset descriptor ownership to the MAC. 1434 */ 1435 ddi_put32(vrp->rxring.acchdl, 1436 &rxp->cdesc->stat0, 1437 VR_RDES0_OWN); 1438 (void) ddi_dma_sync(vrp->rxring.handle, 1439 rxp->offset, 1440 sizeof (vr_chip_desc_t), 1441 DDI_DMA_SYNC_FORDEV); 1442 } 1443 vrp->rx.rp = rxp; 1444 1445 /* 1446 * If we do flowcontrol and if the card can transmit pause frames, 1447 * increment the "available receive descriptors" register. 1448 */ 1449 if (n > 0 && vrp->chip.link.flowctrl == VR_PAUSE_BIDIRECTIONAL) { 1450 /* 1451 * Whenever the card moves a fragment to host memory it 1452 * decrements the RXBUFCOUNT register. If the value in the 1453 * register reaches a low watermark, the card transmits a pause 1454 * frame. If the value in this register reaches a high 1455 * watermark, the card sends a "cancel pause" frame 1456 * 1457 * Non-zero values written to this byte register are added 1458 * by the chip to the register's contents, so we must write 1459 * the number of descriptors free'd. 1460 */ 1461 VR_PUT8(vrp->acc_reg, VR_FCR0_RXBUFCOUNT, MIN(n, 0xFF)); 1462 } 1463 return (lp); 1464 } 1465 1466 /* 1467 * Enqueue a list of packets for transmission 1468 * Return the packets not transmitted. 1469 */ 1470 mblk_t * 1471 vr_mac_tx_enqueue_list(void *p, mblk_t *mp) 1472 { 1473 vr_t *vrp; 1474 mblk_t *nextp; 1475 1476 vrp = (vr_t *)p; 1477 mutex_enter(&vrp->tx.lock); 1478 do { 1479 if (vrp->tx.nfree == 0) { 1480 vrp->stats.ether_stat_defer_xmts++; 1481 vrp->tx.resched = 1; 1482 break; 1483 } 1484 nextp = mp->b_next; 1485 mp->b_next = mp->b_prev = NULL; 1486 vr_tx_enqueue_msg(vrp, mp); 1487 mp = nextp; 1488 vrp->tx.nfree--; 1489 } while (mp != NULL); 1490 mutex_exit(&vrp->tx.lock); 1491 1492 /* 1493 * Tell the chip to poll the TX ring. 1494 */ 1495 VR_PUT8(vrp->acc_reg, VR_CTRL0, VR_CTRL0_DMA_GO); 1496 return (mp); 1497 } 1498 1499 /* 1500 * Enqueue a message for transmission. 1501 */ 1502 static void 1503 vr_tx_enqueue_msg(vr_t *vrp, mblk_t *mp) 1504 { 1505 vr_desc_t *wp; 1506 vr_data_dma_t *dmap; 1507 uint32_t pklen; 1508 uint32_t nextp; 1509 int padlen; 1510 1511 if ((uchar_t)mp->b_rptr[0] == 0xff && 1512 (uchar_t)mp->b_rptr[1] == 0xff && 1513 (uchar_t)mp->b_rptr[2] == 0xff && 1514 (uchar_t)mp->b_rptr[3] == 0xff && 1515 (uchar_t)mp->b_rptr[4] == 0xff && 1516 (uchar_t)mp->b_rptr[5] == 0xff) 1517 vrp->stats.mac_stat_brdcstxmt++; 1518 else if ((uchar_t)mp->b_rptr[0] == 1) 1519 vrp->stats.mac_stat_multixmt++; 1520 1521 pklen = msgsize(mp); 1522 wp = vrp->tx.wp; 1523 dmap = &wp->dmabuf; 1524 1525 /* 1526 * Copy the message into the pre-mapped buffer and free mp 1527 */ 1528 mcopymsg(mp, dmap->buf); 1529 1530 /* 1531 * Clean padlen bytes of short packet. 1532 */ 1533 padlen = ETHERMIN - pklen; 1534 if (padlen > 0) { 1535 bzero(dmap->buf + pklen, padlen); 1536 pklen += padlen; 1537 } 1538 1539 /* 1540 * Most of the statistics are updated on reclaim, after the actual 1541 * transmit. obytes is maintained here because the length is cleared 1542 * after transmission 1543 */ 1544 vrp->stats.mac_stat_obytes += pklen; 1545 1546 /* 1547 * Sync the data so the device sees the new content too. 1548 */ 1549 (void) ddi_dma_sync(dmap->handle, 0, pklen, DDI_DMA_SYNC_FORDEV); 1550 1551 /* 1552 * If we have reached the TX interrupt distance, enable a TX interrupt 1553 * for this packet. The Interrupt Control (IC) bit in the transmit 1554 * descriptor doesn't have any effect on the interrupt generation 1555 * despite the vague statements in the datasheet. Thus, we use the 1556 * more obscure interrupt suppress bit which is probably part of the 1557 * MAC's bookkeeping for TX interrupts and fragmented packets. 1558 */ 1559 vrp->tx.intr_distance++; 1560 nextp = ddi_get32(vrp->txring.acchdl, &wp->cdesc->next); 1561 if (vrp->tx.intr_distance >= VR_TX_MAX_INTR_DISTANCE) { 1562 /* 1563 * Don't suppress the interrupt for this packet. 1564 */ 1565 vrp->tx.intr_distance = 0; 1566 nextp &= (~VR_TDES3_SUPPRESS_INTR); 1567 } else { 1568 /* 1569 * Suppress the interrupt for this packet. 1570 */ 1571 nextp |= VR_TDES3_SUPPRESS_INTR; 1572 } 1573 1574 /* 1575 * Write and sync the chip's descriptor 1576 */ 1577 ddi_put32(vrp->txring.acchdl, &wp->cdesc->stat1, 1578 pklen | (VR_TDES1_STP | VR_TDES1_EDP | VR_TDES1_CHN)); 1579 ddi_put32(vrp->txring.acchdl, &wp->cdesc->next, nextp); 1580 ddi_put32(vrp->txring.acchdl, &wp->cdesc->stat0, VR_TDES0_OWN); 1581 (void) ddi_dma_sync(vrp->txring.handle, wp->offset, 1582 sizeof (vr_chip_desc_t), DDI_DMA_SYNC_FORDEV); 1583 1584 /* 1585 * The ticks counter is cleared by reclaim when it reclaimed some 1586 * descriptors and incremented by the periodic TX stall check. 1587 */ 1588 vrp->tx.stallticks = 1; 1589 vrp->tx.wp = wp->next; 1590 } 1591 1592 /* 1593 * Free transmitted descriptors. 1594 */ 1595 static void 1596 vr_tx_reclaim(vr_t *vrp) 1597 { 1598 vr_desc_t *cp; 1599 uint32_t stat0, stat1, freed, dirty; 1600 1601 ASSERT(mutex_owned(&vrp->tx.lock)); 1602 1603 freed = 0; 1604 dirty = vrp->tx.ndesc - vrp->tx.nfree; 1605 for (cp = vrp->tx.cp; dirty > 0; cp = cp->next) { 1606 /* 1607 * Sync & get descriptor status. 1608 */ 1609 (void) ddi_dma_sync(vrp->txring.handle, cp->offset, 1610 sizeof (vr_chip_desc_t), 1611 DDI_DMA_SYNC_FORKERNEL); 1612 stat0 = ddi_get32(vrp->txring.acchdl, &cp->cdesc->stat0); 1613 1614 if ((stat0 & VR_TDES0_OWN) != 0) 1615 break; 1616 1617 /* 1618 * Do stats for the first descriptor in a chain. 1619 */ 1620 stat1 = ddi_get32(vrp->txring.acchdl, &cp->cdesc->stat1); 1621 if ((stat1 & VR_TDES1_STP) != 0) { 1622 if ((stat0 & VR_TDES0_TERR) != 0) { 1623 vrp->stats.ether_stat_macxmt_errors++; 1624 if ((stat0 & VR_TDES0_UDF) != 0) 1625 vrp->stats.mac_stat_underflows++; 1626 if ((stat0 & VR_TDES0_ABT) != 0) 1627 vrp-> stats.ether_stat_ex_collisions++; 1628 /* 1629 * Abort and FIFO underflow stop the MAC. 1630 * Packet queueing must be disabled with HD 1631 * links because otherwise the MAC is also lost 1632 * after a few of these events. 1633 */ 1634 VR_PUT8(vrp->acc_reg, VR_CTRL0, 1635 VR_CTRL0_DMA_GO); 1636 } else 1637 vrp->stats.mac_stat_opackets++; 1638 1639 if ((stat0 & VR_TDES0_COL) != 0) { 1640 if ((stat0 & VR_TDES0_NCR) == 1) { 1641 vrp->stats. 1642 ether_stat_first_collisions++; 1643 } else { 1644 vrp->stats. 1645 ether_stat_multi_collisions++; 1646 } 1647 vrp->stats.mac_stat_collisions += 1648 (stat0 & VR_TDES0_NCR); 1649 } 1650 1651 if ((stat0 & VR_TDES0_CRS) != 0) 1652 vrp->stats.ether_stat_carrier_errors++; 1653 1654 if ((stat0 & VR_TDES0_OWC) != 0) 1655 vrp->stats.ether_stat_tx_late_collisions++; 1656 } 1657 freed += 1; 1658 dirty -= 1; 1659 } 1660 vrp->tx.cp = cp; 1661 1662 if (freed > 0) { 1663 vrp->tx.nfree += freed; 1664 vrp->tx.stallticks = 0; 1665 vrp->stats.txreclaims += 1; 1666 } else 1667 vrp->stats.txreclaim0 += 1; 1668 } 1669 1670 /* 1671 * Check TX health every 2 seconds. 1672 */ 1673 static void 1674 vr_periodic(void *p) 1675 { 1676 vr_t *vrp; 1677 1678 vrp = (vr_t *)p; 1679 if (vrp->chip.state == CHIPSTATE_RUNNING && 1680 vrp->chip.link.state == VR_LINK_STATE_UP && vrp->reset == 0) { 1681 if (mutex_tryenter(&vrp->intrlock) != 0) { 1682 mutex_enter(&vrp->tx.lock); 1683 if (vrp->tx.resched == 1) { 1684 if (vrp->tx.stallticks >= VR_MAXTXCHECKS) { 1685 /* 1686 * No succesful reclaim in the last n 1687 * intervals. Reset the MAC. 1688 */ 1689 vrp->reset = 1; 1690 vr_log(vrp, CE_WARN, 1691 "TX stalled, resetting MAC"); 1692 vrp->stats.txstalls++; 1693 } else { 1694 /* 1695 * Increase until we find that we've 1696 * waited long enough. 1697 */ 1698 vrp->tx.stallticks += 1; 1699 } 1700 } 1701 mutex_exit(&vrp->tx.lock); 1702 mutex_exit(&vrp->intrlock); 1703 vrp->stats.txchecks++; 1704 } 1705 } 1706 vrp->stats.cyclics++; 1707 } 1708 1709 /* 1710 * Bring the device to our desired initial state. 1711 */ 1712 static void 1713 vr_reset(vr_t *vrp) 1714 { 1715 uint32_t time; 1716 1717 /* 1718 * Reset the MAC 1719 * If we don't wait long enough for the forced reset to complete, 1720 * MAC looses sync with PHY. Result link up, no link change interrupt 1721 * and no data transfer. 1722 */ 1723 time = 0; 1724 VR_PUT8(vrp->acc_io, VR_CTRL1, VR_CTRL1_RESET); 1725 do { 1726 drv_usecwait(100); 1727 time += 100; 1728 if (time >= 100000) { 1729 VR_PUT8(vrp->acc_io, VR_MISC1, VR_MISC1_RESET); 1730 delay(drv_usectohz(200000)); 1731 } 1732 } while ((VR_GET8(vrp->acc_io, VR_CTRL1) & VR_CTRL1_RESET) != 0); 1733 delay(drv_usectohz(10000)); 1734 1735 /* 1736 * Load the PROM contents into the MAC again. 1737 */ 1738 VR_SETBIT8(vrp->acc_io, VR_PROMCTL, VR_PROMCTL_RELOAD); 1739 delay(drv_usectohz(100000)); 1740 1741 /* 1742 * Tell the MAC via IO space that we like to use memory space for 1743 * accessing registers. 1744 */ 1745 VR_SETBIT8(vrp->acc_io, VR_CFGD, VR_CFGD_MMIOEN); 1746 } 1747 1748 /* 1749 * Prepare and enable the card (MAC + PHY + PCI). 1750 */ 1751 static int 1752 vr_start(vr_t *vrp) 1753 { 1754 uint8_t pci_latency, pci_mode; 1755 1756 ASSERT(mutex_owned(&vrp->oplock)); 1757 1758 /* 1759 * Allocate DMA buffers for RX. 1760 */ 1761 if (vr_rxring_init(vrp) != VR_SUCCESS) { 1762 vr_log(vrp, CE_NOTE, "vr_rxring_init() failed"); 1763 return (ENOMEM); 1764 } 1765 1766 /* 1767 * Allocate DMA buffers for TX. 1768 */ 1769 if (vr_txring_init(vrp) != VR_SUCCESS) { 1770 vr_log(vrp, CE_NOTE, "vr_txring_init() failed"); 1771 vr_rxring_fini(vrp); 1772 return (ENOMEM); 1773 } 1774 1775 /* 1776 * Changes of the chip specific registers as done in VIA's fet driver 1777 * These bits are not in the datasheet and controlled by vr_chip_info. 1778 */ 1779 pci_mode = VR_GET8(vrp->acc_reg, VR_MODE2); 1780 if ((vrp->chip.info.bugs & VR_BUG_NEEDMODE10T) != 0) 1781 pci_mode |= VR_MODE2_MODE10T; 1782 1783 if ((vrp->chip.info.bugs & VR_BUG_NEEDMODE2PCEROPT) != 0) 1784 pci_mode |= VR_MODE2_PCEROPT; 1785 1786 if ((vrp->chip.info.features & VR_FEATURE_MRDLNMULTIPLE) != 0) 1787 pci_mode |= VR_MODE2_MRDPL; 1788 VR_PUT8(vrp->acc_reg, VR_MODE2, pci_mode); 1789 1790 pci_mode = VR_GET8(vrp->acc_reg, VR_MODE3); 1791 if ((vrp->chip.info.bugs & VR_BUG_NEEDMIION) != 0) 1792 pci_mode |= VR_MODE3_MIION; 1793 VR_PUT8(vrp->acc_reg, VR_MODE3, pci_mode); 1794 1795 /* 1796 * RX: Accept broadcast packets. 1797 */ 1798 VR_SETBIT8(vrp->acc_reg, VR_RXCFG, VR_RXCFG_ACCEPTBROAD); 1799 1800 /* 1801 * RX: Start DMA when there are 256 bytes in the FIFO. 1802 */ 1803 VR_SETBITS8(vrp->acc_reg, VR_RXCFG, VR_RXCFG_FIFO_THRESHOLD_BITS, 1804 VR_RXCFG_FIFO_THRESHOLD_256); 1805 VR_SETBITS8(vrp->acc_reg, VR_BCR0, VR_BCR0_RX_FIFO_THRESHOLD_BITS, 1806 VR_BCR0_RX_FIFO_THRESHOLD_256); 1807 1808 /* 1809 * TX: Start transmit when there are 256 bytes in the FIFO. 1810 */ 1811 VR_SETBITS8(vrp->acc_reg, VR_TXCFG, VR_TXCFG_FIFO_THRESHOLD_BITS, 1812 VR_TXCFG_FIFO_THRESHOLD_256); 1813 VR_SETBITS8(vrp->acc_reg, VR_BCR1, VR_BCR1_TX_FIFO_THRESHOLD_BITS, 1814 VR_BCR1_TX_FIFO_THRESHOLD_256); 1815 1816 /* 1817 * Burst transfers up to 256 bytes. 1818 */ 1819 VR_SETBITS8(vrp->acc_reg, VR_BCR0, VR_BCR0_DMABITS, VR_BCR0_DMA256); 1820 1821 /* 1822 * Disable TX autopolling as it is bad for RX performance 1823 * I assume this is because the RX process finds the bus often occupied 1824 * by the polling process. 1825 */ 1826 VR_SETBIT8(vrp->acc_reg, VR_CTRL1, VR_CTRL1_NOAUTOPOLL); 1827 1828 /* 1829 * Honor the PCI latency timer if it is reasonable. 1830 */ 1831 pci_latency = VR_GET8(vrp->acc_cfg, PCI_CONF_LATENCY_TIMER); 1832 if (pci_latency != 0 && pci_latency != 0xFF) 1833 VR_SETBIT8(vrp->acc_reg, VR_CFGB, VR_CFGB_LATENCYTIMER); 1834 else 1835 VR_CLRBIT8(vrp->acc_reg, VR_CFGB, VR_CFGB_LATENCYTIMER); 1836 1837 /* 1838 * Ensure that VLAN filtering is off, because this strips the tag. 1839 */ 1840 if ((vrp->chip.info.features & VR_FEATURE_VLANTAGGING) != 0) { 1841 VR_CLRBIT8(vrp->acc_reg, VR_BCR1, VR_BCR1_VLANFILTER); 1842 VR_CLRBIT8(vrp->acc_reg, VR_TXCFG, VR_TXCFG_8021PQ_EN); 1843 } 1844 1845 /* 1846 * Clear the CAM filter. 1847 */ 1848 if ((vrp->chip.info.features & VR_FEATURE_CAMSUPPORT) != 0) { 1849 VR_PUT8(vrp->acc_reg, VR_CAM_CTRL, VR_CAM_CTRL_ENABLE); 1850 VR_PUT32(vrp->acc_reg, VR_CAM_MASK, 0); 1851 VR_PUT8(vrp->acc_reg, VR_CAM_CTRL, VR_CAM_CTRL_DONE); 1852 1853 VR_PUT8(vrp->acc_reg, VR_CAM_CTRL, 1854 VR_CAM_CTRL_ENABLE|VR_CAM_CTRL_SELECT_VLAN); 1855 VR_PUT8(vrp->acc_reg, VR_VCAM0, 0); 1856 VR_PUT8(vrp->acc_reg, VR_VCAM1, 0); 1857 VR_PUT8(vrp->acc_reg, VR_CAM_CTRL, VR_CAM_CTRL_WRITE); 1858 VR_PUT32(vrp->acc_reg, VR_CAM_MASK, 1); 1859 drv_usecwait(2); 1860 VR_PUT8(vrp->acc_reg, VR_CAM_CTRL, VR_CAM_CTRL_DONE); 1861 } 1862 1863 /* 1864 * Give the start addresses of the descriptor rings to the DMA 1865 * controller on the MAC. 1866 */ 1867 VR_PUT32(vrp->acc_reg, VR_RXADDR, vrp->rx.rp->paddr); 1868 VR_PUT32(vrp->acc_reg, VR_TXADDR, vrp->tx.wp->paddr); 1869 1870 /* 1871 * We don't use the additionally invented interrupt ICR1 register, 1872 * so make sure these are disabled. 1873 */ 1874 VR_PUT8(vrp->acc_reg, VR_ISR1, 0xFF); 1875 VR_PUT8(vrp->acc_reg, VR_ICR1, 0); 1876 1877 /* 1878 * Enable interrupts. 1879 */ 1880 VR_PUT16(vrp->acc_reg, VR_ISR0, 0xFFFF); 1881 VR_PUT16(vrp->acc_reg, VR_ICR0, VR_ICR0_CFG); 1882 1883 /* 1884 * Enable the DMA controller. 1885 */ 1886 VR_PUT8(vrp->acc_reg, VR_CTRL0, VR_CTRL0_DMA_GO); 1887 1888 /* 1889 * Configure the link. Rely on the link change interrupt for getting 1890 * the link state into the driver. 1891 */ 1892 vr_link_init(vrp); 1893 1894 /* 1895 * Set the software view on the state to 'running'. 1896 */ 1897 vrp->chip.state = CHIPSTATE_RUNNING; 1898 return (0); 1899 } 1900 1901 /* 1902 * Stop DMA and interrupts. 1903 */ 1904 static int 1905 vr_stop(vr_t *vrp) 1906 { 1907 ASSERT(mutex_owned(&vrp->oplock)); 1908 1909 /* 1910 * Stop interrupts. 1911 */ 1912 VR_PUT16(vrp->acc_reg, VR_ICR0, 0); 1913 VR_PUT8(vrp->acc_reg, VR_ICR1, 0); 1914 1915 /* 1916 * Stop DMA. 1917 */ 1918 VR_PUT8(vrp->acc_reg, VR_CTRL0, VR_CTRL0_DMA_STOP); 1919 1920 /* 1921 * Set the software view on the state to stopped. 1922 */ 1923 vrp->chip.state = CHIPSTATE_STOPPED; 1924 1925 /* 1926 * Remove DMA buffers from the rings. 1927 */ 1928 vr_rxring_fini(vrp); 1929 vr_txring_fini(vrp); 1930 return (0); 1931 } 1932 1933 int 1934 vr_mac_start(void *p) 1935 { 1936 vr_t *vrp; 1937 int rc; 1938 1939 vrp = (vr_t *)p; 1940 mutex_enter(&vrp->oplock); 1941 1942 /* 1943 * Reset the card. 1944 */ 1945 vr_reset(vrp); 1946 1947 /* 1948 * Prepare and enable the card. 1949 */ 1950 rc = vr_start(vrp); 1951 1952 /* 1953 * Configure a cyclic function to keep the card & driver from diverting. 1954 */ 1955 vrp->periodic_id = 1956 ddi_periodic_add(vr_periodic, vrp, VR_CHECK_INTERVAL, DDI_IPL_0); 1957 1958 mutex_exit(&vrp->oplock); 1959 return (rc); 1960 } 1961 1962 void 1963 vr_mac_stop(void *p) 1964 { 1965 vr_t *vrp = p; 1966 1967 mutex_enter(&vrp->oplock); 1968 mutex_enter(&vrp->tx.lock); 1969 1970 /* 1971 * Stop the device. 1972 */ 1973 (void) vr_stop(vrp); 1974 mutex_exit(&vrp->tx.lock); 1975 1976 /* 1977 * Remove the cyclic from the system. 1978 */ 1979 ddi_periodic_delete(vrp->periodic_id); 1980 mutex_exit(&vrp->oplock); 1981 } 1982 1983 /* 1984 * Add or remove a multicast address to/from the filter 1985 * 1986 * From the 21143 manual: 1987 * The 21143 can store 512 bits serving as hash bucket heads, and one physical 1988 * 48-bit Ethernet address. Incoming frames with multicast destination 1989 * addresses are subjected to imperfect filtering. Frames with physical 1990 * destination addresses are checked against the single physical address. 1991 * For any incoming frame with a multicast destination address, the 21143 1992 * applies the standard Ethernet cyclic redundancy check (CRC) function to the 1993 * first 6 bytes containing the destination address, then it uses the most 1994 * significant 9 bits of the result as a bit index into the table. If the 1995 * indexed bit is set, the frame is accepted. If the bit is cleared, the frame 1996 * is rejected. This filtering mode is called imperfect because multicast 1997 * frames not addressed to this station may slip through, but it still 1998 * decreases the number of frames that the host can receive. 1999 * I assume the above is also the way the VIA chips work. There's not a single 2000 * word about the multicast filter in the datasheet. 2001 * 2002 * Another word on the CAM filter on VT6105M controllers: 2003 * The VT6105M has content addressable memory which can be used for perfect 2004 * filtering of 32 multicast addresses and a few VLAN id's 2005 * 2006 * I think it works like this: When the controller receives a multicast 2007 * address, it looks up the address using CAM. When it is found, it takes the 2008 * matching cell address (index) and compares this to the bit position in the 2009 * cam mask. If the bit is set, the packet is passed up. If CAM lookup does not 2010 * result in a match, the packet is filtered using the hash based filter, 2011 * if that matches, the packet is passed up and dropped otherwise 2012 * Also, there's not a single word in the datasheet on how this cam is supposed 2013 * to work ... 2014 */ 2015 int 2016 vr_mac_set_multicast(void *p, boolean_t add, const uint8_t *mca) 2017 { 2018 vr_t *vrp; 2019 uint32_t crc_index; 2020 int32_t cam_index; 2021 uint32_t cam_mask; 2022 boolean_t use_hash_filter; 2023 ether_addr_t taddr; 2024 uint32_t a; 2025 2026 vrp = (vr_t *)p; 2027 mutex_enter(&vrp->oplock); 2028 mutex_enter(&vrp->intrlock); 2029 use_hash_filter = B_FALSE; 2030 2031 if ((vrp->chip.info.features & VR_FEATURE_CAMSUPPORT) != 0) { 2032 /* 2033 * Program the perfect filter. 2034 */ 2035 cam_mask = VR_GET32(vrp->acc_reg, VR_CAM_MASK); 2036 if (add == B_TRUE) { 2037 /* 2038 * Get index of first empty slot. 2039 */ 2040 bzero(&taddr, sizeof (taddr)); 2041 cam_index = vr_cam_index(vrp, taddr); 2042 if (cam_index != -1) { 2043 /* 2044 * Add address at cam_index. 2045 */ 2046 cam_mask |= (1 << cam_index); 2047 VR_PUT8(vrp->acc_reg, VR_CAM_CTRL, 2048 VR_CAM_CTRL_ENABLE); 2049 VR_PUT8(vrp->acc_reg, VR_CAM_ADDR, cam_index); 2050 VR_PUT32(vrp->acc_reg, VR_CAM_MASK, cam_mask); 2051 for (a = 0; a < ETHERADDRL; a++) { 2052 VR_PUT8(vrp->acc_reg, 2053 VR_MCAM0 + a, mca[a]); 2054 } 2055 VR_PUT8(vrp->acc_reg, VR_CAM_CTRL, 2056 VR_CAM_CTRL_WRITE); 2057 drv_usecwait(2); 2058 VR_PUT8(vrp->acc_reg, VR_CAM_CTRL, 2059 VR_CAM_CTRL_DONE); 2060 } else { 2061 /* 2062 * No free CAM slots available 2063 * Add mca to the imperfect filter. 2064 */ 2065 use_hash_filter = B_TRUE; 2066 } 2067 } else { 2068 /* 2069 * Find the index of the entry to remove 2070 * If the entry was not found (-1), the addition was 2071 * probably done when the table was full. 2072 */ 2073 cam_index = vr_cam_index(vrp, mca); 2074 if (cam_index != -1) { 2075 /* 2076 * Disable the corresponding mask bit. 2077 */ 2078 cam_mask &= ~(1 << cam_index); 2079 VR_PUT8(vrp->acc_reg, VR_CAM_CTRL, 2080 VR_CAM_CTRL_ENABLE); 2081 VR_PUT32(vrp->acc_reg, VR_CAM_MASK, cam_mask); 2082 VR_PUT8(vrp->acc_reg, VR_CAM_CTRL, 2083 VR_CAM_CTRL_DONE); 2084 } else { 2085 /* 2086 * The entry to be removed was not found 2087 * The likely cause is that the CAM was full 2088 * during addition. The entry is added to the 2089 * hash filter in that case and needs to be 2090 * removed there too. 2091 */ 2092 use_hash_filter = B_TRUE; 2093 } 2094 } 2095 } else { 2096 /* 2097 * No CAM in the MAC, thus we need the hash filter. 2098 */ 2099 use_hash_filter = B_TRUE; 2100 } 2101 2102 if (use_hash_filter == B_TRUE) { 2103 /* 2104 * Get the CRC-32 of the multicast address 2105 * The card uses the "MSB first" direction when calculating the 2106 * the CRC. This is odd because ethernet is "LSB first" 2107 * We have to use that "big endian" approach as well. 2108 */ 2109 crc_index = ether_crc_be(mca) >> (32 - 6); 2110 if (add == B_TRUE) { 2111 /* 2112 * Turn bit[crc_index] on. 2113 */ 2114 if (crc_index < 32) 2115 vrp->mhash0 |= (1 << crc_index); 2116 else 2117 vrp->mhash1 |= (1 << (crc_index - 32)); 2118 } else { 2119 /* 2120 * Turn bit[crc_index] off. 2121 */ 2122 if (crc_index < 32) 2123 vrp->mhash0 &= ~(0 << crc_index); 2124 else 2125 vrp->mhash1 &= ~(0 << (crc_index - 32)); 2126 } 2127 2128 /* 2129 * When not promiscuous write the filter now. When promiscuous, 2130 * the filter is open and will be written when promiscuous ends. 2131 */ 2132 if (vrp->promisc == B_FALSE) { 2133 VR_PUT32(vrp->acc_reg, VR_MAR0, vrp->mhash0); 2134 VR_PUT32(vrp->acc_reg, VR_MAR1, vrp->mhash1); 2135 } 2136 } 2137 2138 /* 2139 * Enable/disable multicast receivements based on mcount. 2140 */ 2141 if (add == B_TRUE) 2142 vrp->mcount++; 2143 else if (vrp->mcount != 0) 2144 vrp->mcount --; 2145 if (vrp->mcount != 0) 2146 VR_SETBIT8(vrp->acc_reg, VR_RXCFG, VR_RXCFG_ACCEPTMULTI); 2147 else 2148 VR_CLRBIT8(vrp->acc_reg, VR_RXCFG, VR_RXCFG_ACCEPTMULTI); 2149 2150 mutex_exit(&vrp->intrlock); 2151 mutex_exit(&vrp->oplock); 2152 return (0); 2153 } 2154 2155 /* 2156 * Calculate the CRC32 for 6 bytes of multicast address in MSB(it) first order. 2157 * The MSB first order is a bit odd because Ethernet standard is LSB first 2158 */ 2159 static uint32_t 2160 ether_crc_be(const uint8_t *data) 2161 { 2162 uint32_t crc = (uint32_t)0xFFFFFFFFU; 2163 uint32_t carry; 2164 uint32_t bit; 2165 uint32_t length; 2166 uint8_t c; 2167 2168 for (length = 0; length < ETHERADDRL; length++) { 2169 c = data[length]; 2170 for (bit = 0; bit < 8; bit++) { 2171 carry = ((crc & 0x80000000U) ? 1 : 0) ^ (c & 0x01); 2172 crc <<= 1; 2173 c >>= 1; 2174 if (carry) 2175 crc = (crc ^ 0x04C11DB6) | carry; 2176 } 2177 } 2178 return (crc); 2179 } 2180 2181 2182 /* 2183 * Return the CAM index (base 0) of maddr or -1 if maddr is not found 2184 * If maddr is 0, return the index of an empty slot in CAM or -1 when no free 2185 * slots available. 2186 */ 2187 static int32_t 2188 vr_cam_index(vr_t *vrp, const uint8_t *maddr) 2189 { 2190 ether_addr_t taddr; 2191 int32_t index; 2192 uint32_t mask; 2193 uint32_t a; 2194 2195 bzero(&taddr, sizeof (taddr)); 2196 2197 /* 2198 * Read the CAM mask from the controller. 2199 */ 2200 mask = VR_GET32(vrp->acc_reg, VR_CAM_MASK); 2201 2202 /* 2203 * If maddr is 0, return the first unused slot or -1 for no unused. 2204 */ 2205 if (bcmp(maddr, taddr, ETHERADDRL) == 0) { 2206 /* 2207 * Look for the first unused position in mask. 2208 */ 2209 for (index = 0; index < VR_CAM_SZ; index++) { 2210 if (((mask >> index) & 1) == 0) 2211 return (index); 2212 } 2213 return (-1); 2214 } else { 2215 /* 2216 * Look for maddr in CAM. 2217 */ 2218 for (index = 0; index < VR_CAM_SZ; index++) { 2219 /* Look at enabled entries only */ 2220 if (((mask >> index) & 1) == 0) 2221 continue; 2222 2223 VR_PUT8(vrp->acc_reg, VR_CAM_CTRL, VR_CAM_CTRL_ENABLE); 2224 VR_PUT8(vrp->acc_reg, VR_CAM_ADDR, index); 2225 VR_PUT8(vrp->acc_reg, VR_CAM_CTRL, VR_CAM_CTRL_READ); 2226 drv_usecwait(2); 2227 for (a = 0; a < ETHERADDRL; a++) 2228 taddr[a] = VR_GET8(vrp->acc_reg, VR_MCAM0 + a); 2229 VR_PUT8(vrp->acc_reg, VR_CAM_CTRL, VR_CAM_CTRL_DONE); 2230 if (bcmp(maddr, taddr, ETHERADDRL) == 0) 2231 return (index); 2232 } 2233 } 2234 return (-1); 2235 } 2236 2237 /* 2238 * Set promiscuous mode on or off. 2239 */ 2240 int 2241 vr_mac_set_promisc(void *p, boolean_t promiscflag) 2242 { 2243 vr_t *vrp; 2244 uint8_t rxcfg; 2245 2246 vrp = (vr_t *)p; 2247 2248 mutex_enter(&vrp->intrlock); 2249 mutex_enter(&vrp->oplock); 2250 mutex_enter(&vrp->tx.lock); 2251 2252 /* 2253 * Get current receive configuration. 2254 */ 2255 rxcfg = VR_GET8(vrp->acc_reg, VR_RXCFG); 2256 vrp->promisc = promiscflag; 2257 2258 if (promiscflag == B_TRUE) { 2259 /* 2260 * Enable promiscuous mode and open the multicast filter. 2261 */ 2262 rxcfg |= (VR_RXCFG_PROMISC | VR_RXCFG_ACCEPTMULTI); 2263 VR_PUT32(vrp->acc_reg, VR_MAR0, 0xffffffff); 2264 VR_PUT32(vrp->acc_reg, VR_MAR1, 0xffffffff); 2265 } else { 2266 /* 2267 * Restore the multicast filter and disable promiscuous mode. 2268 */ 2269 VR_PUT32(vrp->acc_reg, VR_MAR0, vrp->mhash0); 2270 VR_PUT32(vrp->acc_reg, VR_MAR1, vrp->mhash1); 2271 rxcfg &= ~VR_RXCFG_PROMISC; 2272 if (vrp->mcount != 0) 2273 rxcfg |= VR_RXCFG_ACCEPTMULTI; 2274 } 2275 VR_PUT8(vrp->acc_reg, VR_RXCFG, rxcfg); 2276 mutex_exit(&vrp->tx.lock); 2277 mutex_exit(&vrp->oplock); 2278 mutex_exit(&vrp->intrlock); 2279 return (0); 2280 } 2281 2282 int 2283 vr_mac_getstat(void *arg, uint_t stat, uint64_t *val) 2284 { 2285 vr_t *vrp; 2286 uint64_t v; 2287 2288 vrp = (void *) arg; 2289 2290 switch (stat) { 2291 default: 2292 return (ENOTSUP); 2293 2294 case ETHER_STAT_ADV_CAP_100T4: 2295 v = (vrp->chip.mii.anadv & MII_ABILITY_100BASE_T4) != 0; 2296 break; 2297 2298 case ETHER_STAT_ADV_CAP_100FDX: 2299 v = (vrp->chip.mii.anadv & MII_ABILITY_100BASE_TX_FD) != 0; 2300 break; 2301 2302 case ETHER_STAT_ADV_CAP_100HDX: 2303 v = (vrp->chip.mii.anadv & MII_ABILITY_100BASE_TX) != 0; 2304 break; 2305 2306 case ETHER_STAT_ADV_CAP_10FDX: 2307 v = (vrp->chip.mii.anadv & MII_ABILITY_10BASE_T_FD) != 0; 2308 break; 2309 2310 case ETHER_STAT_ADV_CAP_10HDX: 2311 v = (vrp->chip.mii.anadv & MII_ABILITY_10BASE_T) != 0; 2312 break; 2313 2314 case ETHER_STAT_ADV_CAP_ASMPAUSE: 2315 v = 0; 2316 break; 2317 2318 case ETHER_STAT_ADV_CAP_AUTONEG: 2319 v = (vrp->chip.mii.control & MII_CONTROL_ANE) != 0; 2320 break; 2321 2322 case ETHER_STAT_ADV_CAP_PAUSE: 2323 v = (vrp->chip.mii.anadv & MII_ABILITY_PAUSE) != 0; 2324 break; 2325 2326 case ETHER_STAT_ADV_REMFAULT: 2327 v = (vrp->chip.mii.anadv & MII_AN_ADVERT_REMFAULT) != 0; 2328 break; 2329 2330 case ETHER_STAT_ALIGN_ERRORS: 2331 v = vrp->stats.ether_stat_align_errors; 2332 break; 2333 2334 case ETHER_STAT_CAP_100T4: 2335 v = (vrp->chip.mii.status & MII_STATUS_100_BASE_T4) != 0; 2336 break; 2337 2338 case ETHER_STAT_CAP_100FDX: 2339 v = (vrp->chip.mii.status & MII_STATUS_100_BASEX_FD) != 0; 2340 break; 2341 2342 case ETHER_STAT_CAP_100HDX: 2343 v = (vrp->chip.mii.status & MII_STATUS_100_BASEX) != 0; 2344 break; 2345 2346 case ETHER_STAT_CAP_10FDX: 2347 v = (vrp->chip.mii.status & MII_STATUS_10_FD) != 0; 2348 break; 2349 2350 case ETHER_STAT_CAP_10HDX: 2351 v = (vrp->chip.mii.status & MII_STATUS_10) != 0; 2352 break; 2353 2354 case ETHER_STAT_CAP_ASMPAUSE: 2355 v = 0; 2356 break; 2357 2358 case ETHER_STAT_CAP_AUTONEG: 2359 v = (vrp->chip.mii.status & MII_STATUS_CANAUTONEG) != 0; 2360 break; 2361 2362 case ETHER_STAT_CAP_PAUSE: 2363 v = 1; 2364 break; 2365 2366 case ETHER_STAT_CAP_REMFAULT: 2367 v = (vrp->chip.mii.status & MII_STATUS_REMFAULT) != 0; 2368 break; 2369 2370 case ETHER_STAT_CARRIER_ERRORS: 2371 /* 2372 * Number of times carrier was lost or never detected on a 2373 * transmission attempt. 2374 */ 2375 v = vrp->stats.ether_stat_carrier_errors; 2376 break; 2377 2378 case ETHER_STAT_JABBER_ERRORS: 2379 return (ENOTSUP); 2380 2381 case ETHER_STAT_DEFER_XMTS: 2382 /* 2383 * Packets without collisions where first transmit attempt was 2384 * delayed because the medium was busy. 2385 */ 2386 v = vrp->stats.ether_stat_defer_xmts; 2387 break; 2388 2389 case ETHER_STAT_EX_COLLISIONS: 2390 /* 2391 * Frames where excess collisions occurred on transmit, causing 2392 * transmit failure. 2393 */ 2394 v = vrp->stats.ether_stat_ex_collisions; 2395 break; 2396 2397 case ETHER_STAT_FCS_ERRORS: 2398 /* 2399 * Packets received with CRC errors. 2400 */ 2401 v = vrp->stats.ether_stat_fcs_errors; 2402 break; 2403 2404 case ETHER_STAT_FIRST_COLLISIONS: 2405 /* 2406 * Packets successfully transmitted with exactly one collision. 2407 */ 2408 v = vrp->stats.ether_stat_first_collisions; 2409 break; 2410 2411 case ETHER_STAT_LINK_ASMPAUSE: 2412 v = 0; 2413 break; 2414 2415 case ETHER_STAT_LINK_AUTONEG: 2416 v = (vrp->chip.mii.control & MII_CONTROL_ANE) != 0 && 2417 (vrp->chip.mii.status & MII_STATUS_ANDONE) != 0; 2418 break; 2419 2420 case ETHER_STAT_LINK_DUPLEX: 2421 v = vrp->chip.link.duplex; 2422 break; 2423 2424 case ETHER_STAT_LINK_PAUSE: 2425 v = vrp->chip.link.flowctrl; 2426 break; 2427 2428 case ETHER_STAT_LP_CAP_100T4: 2429 v = (vrp->chip.mii.lpable & MII_ABILITY_100BASE_T4) != 0; 2430 break; 2431 2432 case ETHER_STAT_LP_CAP_1000FDX: 2433 v = 0; 2434 break; 2435 2436 case ETHER_STAT_LP_CAP_1000HDX: 2437 v = 0; 2438 break; 2439 2440 case ETHER_STAT_LP_CAP_100FDX: 2441 v = (vrp->chip.mii.lpable & MII_ABILITY_100BASE_TX_FD) != 0; 2442 break; 2443 2444 case ETHER_STAT_LP_CAP_100HDX: 2445 v = (vrp->chip.mii.lpable & MII_ABILITY_100BASE_TX) != 0; 2446 break; 2447 2448 case ETHER_STAT_LP_CAP_10FDX: 2449 v = (vrp->chip.mii.lpable & MII_ABILITY_10BASE_T_FD) != 0; 2450 break; 2451 2452 case ETHER_STAT_LP_CAP_10HDX: 2453 v = (vrp->chip.mii.lpable & MII_ABILITY_10BASE_T) != 0; 2454 break; 2455 2456 case ETHER_STAT_LP_CAP_ASMPAUSE: 2457 v = 0; 2458 break; 2459 2460 case ETHER_STAT_LP_CAP_AUTONEG: 2461 v = (vrp->chip.mii.anexp & MII_AN_EXP_LPCANAN) != 0; 2462 break; 2463 2464 case ETHER_STAT_LP_CAP_PAUSE: 2465 v = (vrp->chip.mii.lpable & MII_ABILITY_PAUSE) != 0; 2466 break; 2467 2468 case ETHER_STAT_LP_REMFAULT: 2469 v = (vrp->chip.mii.status & MII_STATUS_REMFAULT) != 0; 2470 break; 2471 2472 case ETHER_STAT_MACRCV_ERRORS: 2473 /* 2474 * Packets received with MAC errors, except align_errors, 2475 * fcs_errors, and toolong_errors. 2476 */ 2477 v = vrp->stats.ether_stat_macrcv_errors; 2478 break; 2479 2480 case ETHER_STAT_MACXMT_ERRORS: 2481 /* 2482 * Packets encountering transmit MAC failures, except carrier 2483 * and collision failures. 2484 */ 2485 v = vrp->stats.ether_stat_macxmt_errors; 2486 break; 2487 2488 case ETHER_STAT_MULTI_COLLISIONS: 2489 /* 2490 * Packets successfully transmitted with multiple collisions. 2491 */ 2492 v = vrp->stats.ether_stat_multi_collisions; 2493 break; 2494 2495 case ETHER_STAT_SQE_ERRORS: 2496 /* 2497 * Number of times signal quality error was reported 2498 * This one is reported by the PHY. 2499 */ 2500 return (ENOTSUP); 2501 2502 case ETHER_STAT_TOOLONG_ERRORS: 2503 /* 2504 * Packets received larger than the maximum permitted length. 2505 */ 2506 v = vrp->stats.ether_stat_toolong_errors; 2507 break; 2508 2509 case ETHER_STAT_TOOSHORT_ERRORS: 2510 v = vrp->stats.ether_stat_tooshort_errors; 2511 break; 2512 2513 case ETHER_STAT_TX_LATE_COLLISIONS: 2514 /* 2515 * Number of times a transmit collision occurred late 2516 * (after 512 bit times). 2517 */ 2518 v = vrp->stats.ether_stat_tx_late_collisions; 2519 break; 2520 2521 case ETHER_STAT_XCVR_ADDR: 2522 /* 2523 * MII address in the 0 to 31 range of the physical layer 2524 * device in use for a given Ethernet device. 2525 */ 2526 v = vrp->chip.phyaddr; 2527 break; 2528 2529 case ETHER_STAT_XCVR_ID: 2530 /* 2531 * MII transceiver manufacturer and device ID. 2532 */ 2533 v = (vrp->chip.mii.identh << 16) | vrp->chip.mii.identl; 2534 break; 2535 2536 case ETHER_STAT_XCVR_INUSE: 2537 v = vrp->chip.link.mau; 2538 break; 2539 2540 case MAC_STAT_BRDCSTRCV: 2541 v = vrp->stats.mac_stat_brdcstrcv; 2542 break; 2543 2544 case MAC_STAT_BRDCSTXMT: 2545 v = vrp->stats.mac_stat_brdcstxmt; 2546 break; 2547 2548 case MAC_STAT_MULTIXMT: 2549 v = vrp->stats.mac_stat_multixmt; 2550 break; 2551 2552 case MAC_STAT_COLLISIONS: 2553 v = vrp->stats.mac_stat_collisions; 2554 break; 2555 2556 case MAC_STAT_IERRORS: 2557 v = vrp->stats.mac_stat_ierrors; 2558 break; 2559 2560 case MAC_STAT_IFSPEED: 2561 if (vrp->chip.link.speed == VR_LINK_SPEED_100MBS) 2562 v = 100 * 1000 * 1000; 2563 else if (vrp->chip.link.speed == VR_LINK_SPEED_10MBS) 2564 v = 10 * 1000 * 1000; 2565 else 2566 v = 0; 2567 break; 2568 2569 case MAC_STAT_IPACKETS: 2570 v = vrp->stats.mac_stat_ipackets; 2571 break; 2572 2573 case MAC_STAT_MULTIRCV: 2574 v = vrp->stats.mac_stat_multircv; 2575 break; 2576 2577 case MAC_STAT_NORCVBUF: 2578 vrp->stats.mac_stat_norcvbuf += 2579 VR_GET16(vrp->acc_reg, VR_TALLY_MPA); 2580 VR_PUT16(vrp->acc_reg, VR_TALLY_MPA, 0); 2581 v = vrp->stats.mac_stat_norcvbuf; 2582 break; 2583 2584 case MAC_STAT_NOXMTBUF: 2585 v = vrp->stats.mac_stat_noxmtbuf; 2586 break; 2587 2588 case MAC_STAT_OBYTES: 2589 v = vrp->stats.mac_stat_obytes; 2590 break; 2591 2592 case MAC_STAT_OERRORS: 2593 v = vrp->stats.ether_stat_macxmt_errors + 2594 vrp->stats.mac_stat_underflows + 2595 vrp->stats.ether_stat_align_errors + 2596 vrp->stats.ether_stat_carrier_errors + 2597 vrp->stats.ether_stat_fcs_errors; 2598 break; 2599 2600 case MAC_STAT_OPACKETS: 2601 v = vrp->stats.mac_stat_opackets; 2602 break; 2603 2604 case MAC_STAT_RBYTES: 2605 v = vrp->stats.mac_stat_rbytes; 2606 break; 2607 2608 case MAC_STAT_UNKNOWNS: 2609 /* 2610 * Isn't this something for the MAC layer to maintain? 2611 */ 2612 return (ENOTSUP); 2613 2614 case MAC_STAT_UNDERFLOWS: 2615 v = vrp->stats.mac_stat_underflows; 2616 break; 2617 2618 case MAC_STAT_OVERFLOWS: 2619 v = vrp->stats.mac_stat_overflows; 2620 break; 2621 } 2622 *val = v; 2623 return (0); 2624 } 2625 2626 int 2627 vr_mac_set_ether_addr(void *p, const uint8_t *ea) 2628 { 2629 vr_t *vrp; 2630 int i; 2631 2632 vrp = (vr_t *)p; 2633 mutex_enter(&vrp->oplock); 2634 mutex_enter(&vrp->intrlock); 2635 2636 /* 2637 * Set a new station address. 2638 */ 2639 for (i = 0; i < ETHERADDRL; i++) 2640 VR_PUT8(vrp->acc_reg, VR_ETHERADDR + i, ea[i]); 2641 2642 mutex_exit(&vrp->intrlock); 2643 mutex_exit(&vrp->oplock); 2644 return (0); 2645 } 2646 2647 /* 2648 * Configure the ethernet link according to param and chip.mii. 2649 */ 2650 static void 2651 vr_link_init(vr_t *vrp) 2652 { 2653 ASSERT(mutex_owned(&vrp->oplock)); 2654 if ((vrp->chip.mii.control & MII_CONTROL_ANE) != 0) { 2655 /* 2656 * If we do autoneg, ensure restart autoneg is ON. 2657 */ 2658 vrp->chip.mii.control |= MII_CONTROL_RSAN; 2659 2660 /* 2661 * The advertisements are prepared by param_init. 2662 */ 2663 vr_phy_write(vrp, MII_AN_ADVERT, vrp->chip.mii.anadv); 2664 } else { 2665 /* 2666 * If we don't autoneg, we need speed, duplex and flowcontrol 2667 * to configure the link. However, dladm doesn't allow changes 2668 * to speed and duplex (readonly). The way this is solved 2669 * (ahem) is to select the highest enabled combination 2670 * Speed and duplex should be r/w when autoneg is off. 2671 */ 2672 if ((vrp->param.anadv_en & 2673 MII_ABILITY_100BASE_TX_FD) != 0) { 2674 vrp->chip.mii.control |= MII_CONTROL_100MB; 2675 vrp->chip.mii.control |= MII_CONTROL_FDUPLEX; 2676 } else if ((vrp->param.anadv_en & 2677 MII_ABILITY_100BASE_TX) != 0) { 2678 vrp->chip.mii.control |= MII_CONTROL_100MB; 2679 vrp->chip.mii.control &= ~MII_CONTROL_FDUPLEX; 2680 } else if ((vrp->param.anadv_en & 2681 MII_ABILITY_10BASE_T_FD) != 0) { 2682 vrp->chip.mii.control |= MII_CONTROL_FDUPLEX; 2683 vrp->chip.mii.control &= ~MII_CONTROL_100MB; 2684 } else { 2685 vrp->chip.mii.control &= ~MII_CONTROL_100MB; 2686 vrp->chip.mii.control &= ~MII_CONTROL_FDUPLEX; 2687 } 2688 } 2689 /* 2690 * Write the control register. 2691 */ 2692 vr_phy_write(vrp, MII_CONTROL, vrp->chip.mii.control); 2693 2694 /* 2695 * With autoneg off we cannot rely on the link_change interrupt for 2696 * for getting the status into the driver. 2697 */ 2698 if ((vrp->chip.mii.control & MII_CONTROL_ANE) == 0) { 2699 vr_link_state(vrp); 2700 mac_link_update(vrp->machdl, 2701 (link_state_t)vrp->chip.link.state); 2702 } 2703 } 2704 2705 /* 2706 * Get link state in the driver and configure the MAC accordingly. 2707 */ 2708 static void 2709 vr_link_state(vr_t *vrp) 2710 { 2711 uint16_t mask; 2712 2713 ASSERT(mutex_owned(&vrp->oplock)); 2714 2715 vr_phy_read(vrp, MII_STATUS, &vrp->chip.mii.status); 2716 vr_phy_read(vrp, MII_CONTROL, &vrp->chip.mii.control); 2717 vr_phy_read(vrp, MII_AN_ADVERT, &vrp->chip.mii.anadv); 2718 vr_phy_read(vrp, MII_AN_LPABLE, &vrp->chip.mii.lpable); 2719 vr_phy_read(vrp, MII_AN_EXPANSION, &vrp->chip.mii.anexp); 2720 2721 /* 2722 * If we did autongeg, deduce the link type/speed by selecting the 2723 * highest common denominator. 2724 */ 2725 if ((vrp->chip.mii.control & MII_CONTROL_ANE) != 0) { 2726 mask = vrp->chip.mii.anadv & vrp->chip.mii.lpable; 2727 if ((mask & MII_ABILITY_100BASE_TX_FD) != 0) { 2728 vrp->chip.link.speed = VR_LINK_SPEED_100MBS; 2729 vrp->chip.link.duplex = VR_LINK_DUPLEX_FULL; 2730 vrp->chip.link.mau = VR_MAU_100X; 2731 } else if ((mask & MII_ABILITY_100BASE_T4) != 0) { 2732 vrp->chip.link.speed = VR_LINK_SPEED_100MBS; 2733 vrp->chip.link.duplex = VR_LINK_DUPLEX_HALF; 2734 vrp->chip.link.mau = VR_MAU_100T4; 2735 } else if ((mask & MII_ABILITY_100BASE_TX) != 0) { 2736 vrp->chip.link.speed = VR_LINK_SPEED_100MBS; 2737 vrp->chip.link.duplex = VR_LINK_DUPLEX_HALF; 2738 vrp->chip.link.mau = VR_MAU_100X; 2739 } else if ((mask & MII_ABILITY_10BASE_T_FD) != 0) { 2740 vrp->chip.link.speed = VR_LINK_SPEED_10MBS; 2741 vrp->chip.link.duplex = VR_LINK_DUPLEX_FULL; 2742 vrp->chip.link.mau = VR_MAU_10; 2743 } else if ((mask & MII_ABILITY_10BASE_T) != 0) { 2744 vrp->chip.link.speed = VR_LINK_SPEED_10MBS; 2745 vrp->chip.link.duplex = VR_LINK_DUPLEX_HALF; 2746 vrp->chip.link.mau = VR_MAU_10; 2747 } else { 2748 vrp->chip.link.speed = VR_LINK_SPEED_UNKNOWN; 2749 vrp->chip.link.duplex = VR_LINK_DUPLEX_UNKNOWN; 2750 vrp->chip.link.mau = VR_MAU_UNKNOWN; 2751 } 2752 2753 /* 2754 * Did we negotiate pause? 2755 */ 2756 if ((mask & MII_ABILITY_PAUSE) != 0 && 2757 vrp->chip.link.duplex == VR_LINK_DUPLEX_FULL) 2758 vrp->chip.link.flowctrl = VR_PAUSE_BIDIRECTIONAL; 2759 else 2760 vrp->chip.link.flowctrl = VR_PAUSE_NONE; 2761 2762 /* 2763 * Did either one detect a AN fault? 2764 */ 2765 if ((vrp->chip.mii.status & MII_STATUS_REMFAULT) != 0) 2766 vr_log(vrp, CE_WARN, 2767 "AN remote fault reported by LP."); 2768 2769 if ((vrp->chip.mii.lpable & MII_AN_ADVERT_REMFAULT) != 0) 2770 vr_log(vrp, CE_WARN, "AN remote fault caused for LP."); 2771 } else { 2772 /* 2773 * We didn't autoneg 2774 * The link type is defined by the control register. 2775 */ 2776 if ((vrp->chip.mii.control & MII_CONTROL_100MB) != 0) { 2777 vrp->chip.link.speed = VR_LINK_SPEED_100MBS; 2778 vrp->chip.link.mau = VR_MAU_100X; 2779 } else { 2780 vrp->chip.link.speed = VR_LINK_SPEED_10MBS; 2781 vrp->chip.link.mau = VR_MAU_10; 2782 } 2783 2784 if ((vrp->chip.mii.control & MII_CONTROL_FDUPLEX) != 0) 2785 vrp->chip.link.duplex = VR_LINK_DUPLEX_FULL; 2786 else { 2787 vrp->chip.link.duplex = VR_LINK_DUPLEX_HALF; 2788 /* 2789 * No pause on HDX links. 2790 */ 2791 vrp->chip.link.flowctrl = VR_PAUSE_NONE; 2792 } 2793 } 2794 2795 /* 2796 * Set the duplex mode on the MAC according to that of the PHY. 2797 */ 2798 if (vrp->chip.link.duplex == VR_LINK_DUPLEX_FULL) { 2799 VR_SETBIT8(vrp->acc_reg, VR_CTRL1, VR_CTRL1_MACFULLDUPLEX); 2800 /* 2801 * Enable packet queueing on FDX links. 2802 */ 2803 if ((vrp->chip.info.bugs & VR_BUG_NO_TXQUEUEING) == 0) 2804 VR_CLRBIT8(vrp->acc_reg, VR_CFGB, VR_CFGB_QPKTDIS); 2805 } else { 2806 VR_CLRBIT8(vrp->acc_reg, VR_CTRL1, VR_CTRL1_MACFULLDUPLEX); 2807 /* 2808 * Disable packet queueing on HDX links. With queueing enabled, 2809 * this MAC get's lost after a TX abort (too many colisions). 2810 */ 2811 VR_SETBIT8(vrp->acc_reg, VR_CFGB, VR_CFGB_QPKTDIS); 2812 } 2813 2814 /* 2815 * Set pause options on the MAC. 2816 */ 2817 if (vrp->chip.link.flowctrl == VR_PAUSE_BIDIRECTIONAL) { 2818 /* 2819 * All of our MAC's can receive pause frames. 2820 */ 2821 VR_SETBIT8(vrp->acc_reg, VR_MISC0, VR_MISC0_FDXRFEN); 2822 2823 /* 2824 * VT6105 and above can transmit pause frames. 2825 */ 2826 if ((vrp->chip.info.features & VR_FEATURE_TX_PAUSE_CAP) != 0) { 2827 /* 2828 * Set the number of available receive descriptors 2829 * Non-zero values written to this register are added 2830 * to the register's contents. Careful: Writing zero 2831 * clears the register and thus causes a (long) pause 2832 * request. 2833 */ 2834 VR_PUT8(vrp->acc_reg, VR_FCR0_RXBUFCOUNT, 2835 MIN(vrp->rx.ndesc, 0xFF) - 2836 VR_GET8(vrp->acc_reg, 2837 VR_FCR0_RXBUFCOUNT)); 2838 2839 /* 2840 * Request pause when we have 4 descs left. 2841 */ 2842 VR_SETBITS8(vrp->acc_reg, VR_FCR1, 2843 VR_FCR1_PAUSEONBITS, VR_FCR1_PAUSEON_04); 2844 2845 /* 2846 * Cancel the pause when there are 24 descriptors again. 2847 */ 2848 VR_SETBITS8(vrp->acc_reg, VR_FCR1, 2849 VR_FCR1_PAUSEOFFBITS, VR_FCR1_PAUSEOFF_24); 2850 2851 /* 2852 * Request a pause of FFFF bit-times. This long pause 2853 * is cancelled when the high watermark is reached. 2854 */ 2855 VR_PUT16(vrp->acc_reg, VR_FCR2_PAUSE, 0xFFFF); 2856 2857 /* 2858 * Enable flow control on the MAC. 2859 */ 2860 VR_SETBIT8(vrp->acc_reg, VR_MISC0, VR_MISC0_FDXTFEN); 2861 VR_SETBIT8(vrp->acc_reg, VR_FCR1, VR_FCR1_FD_RX_EN | 2862 VR_FCR1_FD_TX_EN | VR_FCR1_XONXOFF_EN); 2863 } 2864 } else { 2865 /* 2866 * Turn flow control OFF. 2867 */ 2868 VR_CLRBIT8(vrp->acc_reg, 2869 VR_MISC0, VR_MISC0_FDXRFEN | VR_MISC0_FDXTFEN); 2870 if ((vrp->chip.info.features & VR_FEATURE_TX_PAUSE_CAP) != 0) { 2871 VR_CLRBIT8(vrp->acc_reg, VR_FCR1, 2872 VR_FCR1_FD_RX_EN | VR_FCR1_FD_TX_EN | 2873 VR_FCR1_XONXOFF_EN); 2874 } 2875 } 2876 2877 /* 2878 * Set link state. 2879 */ 2880 if ((vrp->chip.mii.status & MII_STATUS_LINKUP) != 0) 2881 vrp->chip.link.state = VR_LINK_STATE_UP; 2882 else 2883 vrp->chip.link.state = VR_LINK_STATE_DOWN; 2884 } 2885 2886 /* 2887 * The PHY is automatically polled by the MAC once per 1024 MD clock cycles 2888 * MD is clocked once per 960ns so polling happens about every 1M ns, some 2889 * 1000 times per second 2890 * This polling process is required for the functionality of the link change 2891 * interrupt. Polling process must be disabled in order to access PHY registers 2892 * using MDIO 2893 * 2894 * Turn off PHY polling so that the PHY registers can be accessed. 2895 */ 2896 static void 2897 vr_phy_autopoll_disable(vr_t *vrp) 2898 { 2899 uint32_t time; 2900 uint8_t miicmd, miiaddr; 2901 2902 /* 2903 * Special procedure to stop the autopolling. 2904 */ 2905 if ((vrp->chip.info.bugs & VR_BUG_MIIPOLLSTOP) != 0) { 2906 /* 2907 * If polling is enabled. 2908 */ 2909 miicmd = VR_GET8(vrp->acc_reg, VR_MIICMD); 2910 if ((miicmd & VR_MIICMD_MD_AUTO) != 0) { 2911 /* 2912 * Wait for the end of a cycle (mdone set). 2913 */ 2914 time = 0; 2915 do { 2916 drv_usecwait(10); 2917 if (time >= VR_MMI_WAITMAX) { 2918 vr_log(vrp, CE_WARN, 2919 "Timeout in " 2920 "disable MII polling"); 2921 break; 2922 } 2923 time += VR_MMI_WAITINCR; 2924 miiaddr = VR_GET8(vrp->acc_reg, VR_MIIADDR); 2925 } while ((miiaddr & VR_MIIADDR_MDONE) == 0); 2926 } 2927 /* 2928 * Once paused, we can disable autopolling. 2929 */ 2930 VR_PUT8(vrp->acc_reg, VR_MIICMD, 0); 2931 } else { 2932 /* 2933 * Turn off MII polling. 2934 */ 2935 VR_PUT8(vrp->acc_reg, VR_MIICMD, 0); 2936 2937 /* 2938 * Wait for MIDLE in MII address register. 2939 */ 2940 time = 0; 2941 do { 2942 drv_usecwait(VR_MMI_WAITINCR); 2943 if (time >= VR_MMI_WAITMAX) { 2944 vr_log(vrp, CE_WARN, 2945 "Timeout in disable MII polling"); 2946 break; 2947 } 2948 time += VR_MMI_WAITINCR; 2949 miiaddr = VR_GET8(vrp->acc_reg, VR_MIIADDR); 2950 } while ((miiaddr & VR_MIIADDR_MIDLE) == 0); 2951 } 2952 } 2953 2954 /* 2955 * Turn on PHY polling. PHY's registers cannot be accessed. 2956 */ 2957 static void 2958 vr_phy_autopoll_enable(vr_t *vrp) 2959 { 2960 uint32_t time; 2961 2962 VR_PUT8(vrp->acc_reg, VR_MIICMD, 0); 2963 VR_PUT8(vrp->acc_reg, VR_MIIADDR, MII_STATUS|VR_MIIADDR_MAUTO); 2964 VR_PUT8(vrp->acc_reg, VR_MIICMD, VR_MIICMD_MD_AUTO); 2965 2966 /* 2967 * Wait for the polling process to finish. 2968 */ 2969 time = 0; 2970 do { 2971 drv_usecwait(VR_MMI_WAITINCR); 2972 if (time >= VR_MMI_WAITMAX) { 2973 vr_log(vrp, CE_NOTE, "Timeout in enable MII polling"); 2974 break; 2975 } 2976 time += VR_MMI_WAITINCR; 2977 } while ((VR_GET8(vrp->acc_reg, VR_MIIADDR) & VR_MIIADDR_MDONE) == 0); 2978 2979 /* 2980 * Initiate a polling. 2981 */ 2982 VR_SETBIT8(vrp->acc_reg, VR_MIIADDR, VR_MIIADDR_MAUTO); 2983 } 2984 2985 /* 2986 * Read a register from the PHY using MDIO. 2987 */ 2988 static void 2989 vr_phy_read(vr_t *vrp, int offset, uint16_t *value) 2990 { 2991 uint32_t time; 2992 2993 vr_phy_autopoll_disable(vrp); 2994 2995 /* 2996 * Write the register number to the lower 5 bits of the MII address 2997 * register. 2998 */ 2999 VR_SETBITS8(vrp->acc_reg, VR_MIIADDR, VR_MIIADDR_BITS, offset); 3000 3001 /* 3002 * Write a READ command to the MII control register 3003 * This bit will be cleared when the read is finished. 3004 */ 3005 VR_SETBIT8(vrp->acc_reg, VR_MIICMD, VR_MIICMD_MD_READ); 3006 3007 /* 3008 * Wait until the read is done. 3009 */ 3010 time = 0; 3011 do { 3012 drv_usecwait(VR_MMI_WAITINCR); 3013 if (time >= VR_MMI_WAITMAX) { 3014 vr_log(vrp, CE_NOTE, "Timeout in MII read command"); 3015 break; 3016 } 3017 time += VR_MMI_WAITINCR; 3018 } while ((VR_GET8(vrp->acc_reg, VR_MIICMD) & VR_MIICMD_MD_READ) != 0); 3019 3020 *value = VR_GET16(vrp->acc_reg, VR_MIIDATA); 3021 vr_phy_autopoll_enable(vrp); 3022 } 3023 3024 /* 3025 * Write to a PHY's register. 3026 */ 3027 static void 3028 vr_phy_write(vr_t *vrp, int offset, uint16_t value) 3029 { 3030 uint32_t time; 3031 3032 vr_phy_autopoll_disable(vrp); 3033 3034 /* 3035 * Write the register number to the MII address register. 3036 */ 3037 VR_SETBITS8(vrp->acc_reg, VR_MIIADDR, VR_MIIADDR_BITS, offset); 3038 3039 /* 3040 * Write the value to the data register. 3041 */ 3042 VR_PUT16(vrp->acc_reg, VR_MIIDATA, value); 3043 3044 /* 3045 * Issue the WRITE command to the command register. 3046 * This bit will be cleared when the write is finished. 3047 */ 3048 VR_SETBIT8(vrp->acc_reg, VR_MIICMD, VR_MIICMD_MD_WRITE); 3049 3050 time = 0; 3051 do { 3052 drv_usecwait(VR_MMI_WAITINCR); 3053 if (time >= VR_MMI_WAITMAX) { 3054 vr_log(vrp, CE_NOTE, "Timeout in MII write command"); 3055 break; 3056 } 3057 time += VR_MMI_WAITINCR; 3058 } while ((VR_GET8(vrp->acc_reg, VR_MIICMD) & VR_MIICMD_MD_WRITE) != 0); 3059 vr_phy_autopoll_enable(vrp); 3060 } 3061 3062 /* 3063 * Initialize and install some private kstats. 3064 */ 3065 typedef struct { 3066 char *name; 3067 uchar_t type; 3068 } vr_kstat_t; 3069 3070 static const vr_kstat_t vr_driver_stats [] = { 3071 {"allocbfail", KSTAT_DATA_INT32}, 3072 {"intr_claimed", KSTAT_DATA_INT64}, 3073 {"intr_unclaimed", KSTAT_DATA_INT64}, 3074 {"linkchanges", KSTAT_DATA_INT64}, 3075 {"txnfree", KSTAT_DATA_INT32}, 3076 {"txstalls", KSTAT_DATA_INT32}, 3077 {"resets", KSTAT_DATA_INT32}, 3078 {"txreclaims", KSTAT_DATA_INT64}, 3079 {"txreclaim0", KSTAT_DATA_INT64}, 3080 {"cyclics", KSTAT_DATA_INT64}, 3081 {"txchecks", KSTAT_DATA_INT64}, 3082 }; 3083 3084 static void 3085 vr_kstats_init(vr_t *vrp) 3086 { 3087 kstat_t *ksp; 3088 struct kstat_named *knp; 3089 int i; 3090 int nstats; 3091 3092 nstats = sizeof (vr_driver_stats) / sizeof (vr_kstat_t); 3093 3094 ksp = kstat_create(MODULENAME, ddi_get_instance(vrp->devinfo), 3095 "driver", "net", KSTAT_TYPE_NAMED, nstats, 0); 3096 3097 if (ksp == NULL) 3098 vr_log(vrp, CE_WARN, "kstat_create failed"); 3099 3100 ksp->ks_update = vr_update_kstats; 3101 ksp->ks_private = (void*) vrp; 3102 knp = ksp->ks_data; 3103 3104 for (i = 0; i < nstats; i++, knp++) { 3105 kstat_named_init(knp, vr_driver_stats[i].name, 3106 vr_driver_stats[i].type); 3107 } 3108 kstat_install(ksp); 3109 vrp->ksp = ksp; 3110 } 3111 3112 static int 3113 vr_update_kstats(kstat_t *ksp, int access) 3114 { 3115 vr_t *vrp; 3116 struct kstat_named *knp; 3117 3118 vrp = (vr_t *)ksp->ks_private; 3119 knp = ksp->ks_data; 3120 3121 if (access != KSTAT_READ) 3122 return (EACCES); 3123 3124 (knp++)->value.ui32 = vrp->stats.allocbfail; 3125 (knp++)->value.ui64 = vrp->stats.intr_claimed; 3126 (knp++)->value.ui64 = vrp->stats.intr_unclaimed; 3127 (knp++)->value.ui64 = vrp->stats.linkchanges; 3128 (knp++)->value.ui32 = vrp->tx.nfree; 3129 (knp++)->value.ui32 = vrp->stats.txstalls; 3130 (knp++)->value.ui32 = vrp->stats.resets; 3131 (knp++)->value.ui64 = vrp->stats.txreclaims; 3132 (knp++)->value.ui64 = vrp->stats.txreclaim0; 3133 (knp++)->value.ui64 = vrp->stats.cyclics; 3134 (knp++)->value.ui64 = vrp->stats.txchecks; 3135 return (0); 3136 } 3137 3138 /* 3139 * Remove 'private' kstats. 3140 */ 3141 static void 3142 vr_remove_kstats(vr_t *vrp) 3143 { 3144 if (vrp->ksp != NULL) 3145 kstat_delete(vrp->ksp); 3146 } 3147 3148 /* 3149 * Get a property of the device/driver 3150 * Remarks: 3151 * - pr_val is always an integer of size pr_valsize 3152 * - ENABLED (EN) is what is configured via dladm 3153 * - ADVERTISED (ADV) is ENABLED minus constraints, like PHY/MAC capabilities 3154 * - DEFAULT are driver- and hardware defaults (DEFAULT is implemented as a 3155 * flag in pr_flags instead of MAC_PROP_DEFAULT_) 3156 * - perm is the permission printed on ndd -get /.. \? 3157 */ 3158 int 3159 vr_mac_getprop(void *arg, const char *pr_name, mac_prop_id_t pr_num, 3160 uint_t pr_flags, uint_t pr_valsize, void *pr_val, uint_t *perm) 3161 { 3162 vr_t *vrp; 3163 uint32_t err; 3164 uint64_t val; 3165 3166 /* Since we have no private properties */ 3167 _NOTE(ARGUNUSED(pr_name)) 3168 3169 err = 0; 3170 vrp = (vr_t *)arg; 3171 if ((pr_flags & MAC_PROP_DEFAULT) != 0) { 3172 /* 3173 * Defaults depend on the PHY/MAC's capabilities 3174 * All defaults are read/write, otherwise reset-linkprop fails 3175 * with enotsup .... 3176 */ 3177 *perm = MAC_PROP_PERM_RW; 3178 switch (pr_num) { 3179 case MAC_PROP_ADV_1000FDX_CAP: 3180 case MAC_PROP_EN_1000FDX_CAP: 3181 case MAC_PROP_ADV_1000HDX_CAP: 3182 case MAC_PROP_EN_1000HDX_CAP: 3183 val = 0; 3184 break; 3185 3186 case MAC_PROP_ADV_100FDX_CAP: 3187 case MAC_PROP_EN_100FDX_CAP: 3188 val = (vrp->chip.mii.status & 3189 MII_STATUS_100_BASEX_FD) != 0; 3190 break; 3191 3192 case MAC_PROP_ADV_100HDX_CAP: 3193 case MAC_PROP_EN_100HDX_CAP: 3194 val = (vrp->chip.mii.status & 3195 MII_STATUS_100_BASEX) != 0; 3196 break; 3197 3198 case MAC_PROP_ADV_100T4_CAP: 3199 case MAC_PROP_EN_100T4_CAP: 3200 val = (vrp->chip.mii.status & 3201 MII_STATUS_100_BASE_T4) != 0; 3202 break; 3203 3204 case MAC_PROP_ADV_10FDX_CAP: 3205 case MAC_PROP_EN_10FDX_CAP: 3206 val = (vrp->chip.mii.status & 3207 MII_STATUS_10_FD) != 0; 3208 break; 3209 3210 case MAC_PROP_ADV_10HDX_CAP: 3211 case MAC_PROP_EN_10HDX_CAP: 3212 val = (vrp->chip.mii.status & 3213 MII_STATUS_10) != 0; 3214 break; 3215 3216 case MAC_PROP_AUTONEG: 3217 case MAC_PROP_EN_AUTONEG: 3218 val = (vrp->chip.mii.status & 3219 MII_STATUS_CANAUTONEG) != 0; 3220 break; 3221 3222 case MAC_PROP_DUPLEX: 3223 val = VR_LINK_DUPLEX_FULL; 3224 break; 3225 3226 case MAC_PROP_FLOWCTRL: 3227 val = VR_PAUSE_BIDIRECTIONAL; 3228 break; 3229 3230 case MAC_PROP_MTU: 3231 val = ETHERMTU; 3232 break; 3233 3234 case MAC_PROP_SPEED: 3235 val = 100 * 1000 * 1000; 3236 break; 3237 3238 case MAC_PROP_STATUS: 3239 val = VR_LINK_STATE_UP; 3240 break; 3241 3242 default: 3243 return (ENOTSUP); 3244 } 3245 } else { 3246 switch (pr_num) { 3247 case MAC_PROP_ADV_1000FDX_CAP: 3248 case MAC_PROP_ADV_1000HDX_CAP: 3249 val = 0; 3250 *perm = MAC_PROP_PERM_READ; 3251 break; 3252 3253 case MAC_PROP_EN_1000FDX_CAP: 3254 case MAC_PROP_EN_1000HDX_CAP: 3255 *perm = MAC_PROP_PERM_READ; 3256 val = 0; 3257 break; 3258 3259 case MAC_PROP_ADV_100FDX_CAP: 3260 *perm = MAC_PROP_PERM_READ; 3261 val = (vrp->chip.mii.anadv & 3262 MII_ABILITY_100BASE_TX_FD) != 0; 3263 break; 3264 3265 case MAC_PROP_ADV_100HDX_CAP: 3266 *perm = MAC_PROP_PERM_READ; 3267 val = (vrp->chip.mii.anadv & 3268 MII_ABILITY_100BASE_TX) != 0; 3269 break; 3270 3271 case MAC_PROP_ADV_100T4_CAP: 3272 *perm = MAC_PROP_PERM_READ; 3273 val = (vrp->chip.mii.anadv & 3274 MII_ABILITY_100BASE_T4) != 0; 3275 break; 3276 3277 case MAC_PROP_ADV_10FDX_CAP: 3278 *perm = MAC_PROP_PERM_READ; 3279 val = (vrp->chip.mii.anadv & 3280 MII_ABILITY_10BASE_T_FD) != 0; 3281 break; 3282 3283 case MAC_PROP_ADV_10HDX_CAP: 3284 *perm = MAC_PROP_PERM_READ; 3285 val = (vrp->chip.mii.anadv & 3286 MII_ABILITY_10BASE_T) != 0; 3287 break; 3288 3289 case MAC_PROP_AUTONEG: 3290 *perm = MAC_PROP_PERM_RW; 3291 val = (vrp->chip.mii.control & 3292 MII_CONTROL_ANE) != 0; 3293 break; 3294 3295 case MAC_PROP_DUPLEX: 3296 /* 3297 * Writability depends on autoneg. 3298 */ 3299 if ((vrp->chip.mii.control & 3300 MII_CONTROL_ANE) == 0) 3301 *perm = MAC_PROP_PERM_RW; 3302 else 3303 *perm = MAC_PROP_PERM_READ; 3304 val = vrp->chip.link.duplex; 3305 break; 3306 3307 case MAC_PROP_EN_100FDX_CAP: 3308 *perm = MAC_PROP_PERM_RW; 3309 val = (vrp->param.anadv_en & 3310 MII_ABILITY_100BASE_TX_FD) != 0; 3311 break; 3312 3313 case MAC_PROP_EN_100HDX_CAP: 3314 *perm = MAC_PROP_PERM_RW; 3315 val = (vrp->param.anadv_en & 3316 MII_ABILITY_100BASE_TX) != 0; 3317 break; 3318 3319 case MAC_PROP_EN_100T4_CAP: 3320 *perm = MAC_PROP_PERM_READ; 3321 val = (vrp->param.anadv_en & 3322 MII_ABILITY_100BASE_T4) != 0; 3323 break; 3324 3325 case MAC_PROP_EN_10FDX_CAP: 3326 *perm = MAC_PROP_PERM_RW; 3327 val = (vrp->param.anadv_en & 3328 MII_ABILITY_10BASE_T_FD) != 0; 3329 break; 3330 3331 case MAC_PROP_EN_10HDX_CAP: 3332 *perm = MAC_PROP_PERM_RW; 3333 val = (vrp->param.anadv_en & 3334 MII_ABILITY_10BASE_T) != 0; 3335 break; 3336 3337 case MAC_PROP_EN_AUTONEG: 3338 *perm = MAC_PROP_PERM_RW; 3339 val = vrp->param.an_en == VR_LINK_AUTONEG_ON; 3340 break; 3341 3342 case MAC_PROP_FLOWCTRL: 3343 *perm = MAC_PROP_PERM_RW; 3344 val = vrp->chip.link.flowctrl; 3345 break; 3346 3347 case MAC_PROP_MTU: 3348 *perm = MAC_PROP_PERM_RW; 3349 val = vrp->param.mtu; 3350 break; 3351 3352 case MAC_PROP_SPEED: 3353 /* 3354 * Writability depends on autoneg. 3355 */ 3356 if ((vrp->chip.mii.control & 3357 MII_CONTROL_ANE) == 0) 3358 *perm = MAC_PROP_PERM_RW; 3359 else 3360 *perm = MAC_PROP_PERM_READ; 3361 if (vrp->chip.link.speed == 3362 VR_LINK_SPEED_100MBS) 3363 val = 100 * 1000 * 1000; 3364 else if (vrp->chip.link.speed == 3365 VR_LINK_SPEED_10MBS) 3366 val = 10 * 1000 * 1000; 3367 else 3368 val = 0; 3369 break; 3370 3371 case MAC_PROP_STATUS: 3372 val = vrp->chip.link.state; 3373 break; 3374 3375 default: 3376 err = ENOTSUP; 3377 break; 3378 } 3379 } 3380 if (err == 0 && pr_num != MAC_PROP_PRIVATE) { 3381 if (pr_valsize == sizeof (uint64_t)) 3382 *(uint64_t *)pr_val = val; 3383 else if (pr_valsize == sizeof (uint32_t)) 3384 *(uint32_t *)pr_val = val; 3385 else if (pr_valsize == sizeof (uint16_t)) 3386 *(uint16_t *)pr_val = val; 3387 else if (pr_valsize == sizeof (uint8_t)) 3388 *(uint8_t *)pr_val = val; 3389 else 3390 err = EINVAL; 3391 } 3392 return (err); 3393 } 3394 3395 /* 3396 * Set a property of the device. 3397 */ 3398 int 3399 vr_mac_setprop(void *arg, const char *pr_name, mac_prop_id_t pr_num, 3400 uint_t pr_valsize, const void *pr_val) 3401 { 3402 vr_t *vrp; 3403 uint32_t err; 3404 uint64_t val; 3405 3406 /* Since we have no private properties */ 3407 _NOTE(ARGUNUSED(pr_name)) 3408 3409 err = 0; 3410 vrp = (vr_t *)arg; 3411 mutex_enter(&vrp->oplock); 3412 3413 /* 3414 * The current set of public property values are passed as integers 3415 * Private properties are passed as strings in pr_val length pr_valsize. 3416 */ 3417 if (pr_num != MAC_PROP_PRIVATE) { 3418 if (pr_valsize == sizeof (uint64_t)) 3419 val = *(uint64_t *)pr_val; 3420 else if (pr_valsize == sizeof (uint32_t)) 3421 val = *(uint32_t *)pr_val; 3422 else if (pr_valsize == sizeof (uint16_t)) 3423 val = *(uint32_t *)pr_val; 3424 else if (pr_valsize == sizeof (uint8_t)) 3425 val = *(uint8_t *)pr_val; 3426 else { 3427 mutex_exit(&vrp->oplock); 3428 return (EINVAL); 3429 } 3430 } 3431 3432 switch (pr_num) { 3433 case MAC_PROP_DUPLEX: 3434 if ((vrp->chip.mii.control & MII_CONTROL_ANE) == 0) { 3435 if (val == LINK_DUPLEX_FULL) 3436 vrp->chip.mii.control |= 3437 MII_CONTROL_FDUPLEX; 3438 else if (val == LINK_DUPLEX_HALF) 3439 vrp->chip.mii.control &= 3440 ~MII_CONTROL_FDUPLEX; 3441 else 3442 err = EINVAL; 3443 } else 3444 err = EINVAL; 3445 break; 3446 3447 case MAC_PROP_EN_100FDX_CAP: 3448 if (val == 0) 3449 vrp->param.anadv_en &= 3450 ~MII_ABILITY_100BASE_TX_FD; 3451 else 3452 vrp->param.anadv_en |= 3453 MII_ABILITY_100BASE_TX_FD; 3454 break; 3455 3456 case MAC_PROP_EN_100HDX_CAP: 3457 if (val == 0) 3458 vrp->param.anadv_en &= 3459 ~MII_ABILITY_100BASE_TX; 3460 else 3461 vrp->param.anadv_en |= 3462 MII_ABILITY_100BASE_TX; 3463 break; 3464 3465 case MAC_PROP_EN_100T4_CAP: 3466 if (val == 0) 3467 vrp->param.anadv_en &= 3468 ~MII_ABILITY_100BASE_T4; 3469 else 3470 vrp->param.anadv_en |= 3471 MII_ABILITY_100BASE_T4; 3472 break; 3473 3474 case MAC_PROP_EN_10FDX_CAP: 3475 if (val == 0) 3476 vrp->param.anadv_en &= 3477 ~MII_ABILITY_10BASE_T_FD; 3478 else 3479 vrp->param.anadv_en |= 3480 MII_ABILITY_10BASE_T_FD; 3481 break; 3482 3483 case MAC_PROP_EN_10HDX_CAP: 3484 if (val == 0) 3485 vrp->param.anadv_en &= 3486 ~MII_ABILITY_10BASE_T; 3487 else 3488 vrp->param.anadv_en |= 3489 MII_ABILITY_10BASE_T; 3490 break; 3491 3492 case MAC_PROP_AUTONEG: 3493 case MAC_PROP_EN_AUTONEG: 3494 if (val == 0) { 3495 vrp->param.an_en = VR_LINK_AUTONEG_OFF; 3496 vrp->chip.mii.control &= ~MII_CONTROL_ANE; 3497 } else { 3498 vrp->param.an_en = VR_LINK_AUTONEG_ON; 3499 if ((vrp->chip.mii.status & 3500 MII_STATUS_CANAUTONEG) != 0) 3501 vrp->chip.mii.control |= 3502 MII_CONTROL_ANE; 3503 else 3504 err = EINVAL; 3505 } 3506 break; 3507 3508 case MAC_PROP_FLOWCTRL: 3509 if (val == LINK_FLOWCTRL_NONE) 3510 vrp->param.anadv_en &= ~MII_ABILITY_PAUSE; 3511 else if (val == LINK_FLOWCTRL_BI) 3512 vrp->param.anadv_en |= MII_ABILITY_PAUSE; 3513 else 3514 err = EINVAL; 3515 break; 3516 3517 case MAC_PROP_MTU: 3518 if (val >= ETHERMIN && val <= ETHERMTU) 3519 vrp->param.mtu = (uint32_t)val; 3520 else 3521 err = EINVAL; 3522 break; 3523 3524 case MAC_PROP_SPEED: 3525 if (val == 10 * 1000 * 1000) 3526 vrp->chip.link.speed = 3527 VR_LINK_SPEED_10MBS; 3528 else if (val == 100 * 1000 * 1000) 3529 vrp->chip.link.speed = 3530 VR_LINK_SPEED_100MBS; 3531 else 3532 err = EINVAL; 3533 break; 3534 3535 default: 3536 err = ENOTSUP; 3537 break; 3538 } 3539 if (err == 0 && pr_num != MAC_PROP_PRIVATE) { 3540 vrp->chip.mii.anadv = vrp->param.anadv_en & 3541 (vrp->param.an_phymask & vrp->param.an_macmask); 3542 vr_link_init(vrp); 3543 } 3544 mutex_exit(&vrp->oplock); 3545 return (err); 3546 } 3547 3548 3549 /* 3550 * Logging and debug functions. 3551 */ 3552 static struct { 3553 kmutex_t mutex[1]; 3554 const char *ifname; 3555 const char *fmt; 3556 int level; 3557 } prtdata; 3558 3559 static void 3560 vr_vprt(const char *fmt, va_list args) 3561 { 3562 char buf[512]; 3563 3564 ASSERT(mutex_owned(prtdata.mutex)); 3565 (void) vsnprintf(buf, sizeof (buf), fmt, args); 3566 cmn_err(prtdata.level, prtdata.fmt, prtdata.ifname, buf); 3567 } 3568 3569 static void 3570 vr_log(vr_t *vrp, int level, const char *fmt, ...) 3571 { 3572 va_list args; 3573 3574 mutex_enter(prtdata.mutex); 3575 prtdata.ifname = vrp->ifname; 3576 prtdata.fmt = "!%s: %s"; 3577 prtdata.level = level; 3578 3579 va_start(args, fmt); 3580 vr_vprt(fmt, args); 3581 va_end(args); 3582 3583 mutex_exit(prtdata.mutex); 3584 } 3585 3586 #if defined(DEBUG) 3587 static void 3588 vr_prt(const char *fmt, ...) 3589 { 3590 va_list args; 3591 3592 ASSERT(mutex_owned(prtdata.mutex)); 3593 3594 va_start(args, fmt); 3595 vr_vprt(fmt, args); 3596 va_end(args); 3597 3598 mutex_exit(prtdata.mutex); 3599 } 3600 3601 void 3602 (*vr_debug())(const char *fmt, ...) 3603 { 3604 mutex_enter(prtdata.mutex); 3605 prtdata.ifname = MODULENAME; 3606 prtdata.fmt = "^%s: %s\n"; 3607 prtdata.level = CE_CONT; 3608 3609 return (vr_prt); 3610 } 3611 #endif /* DEBUG */ 3612 3613 DDI_DEFINE_STREAM_OPS(vr_dev_ops, nulldev, nulldev, vr_attach, vr_detach, 3614 nodev, NULL, D_MP, NULL, vr_quiesce); 3615 3616 static struct modldrv vr_modldrv = { 3617 &mod_driverops, /* Type of module. This one is a driver */ 3618 vr_ident, /* short description */ 3619 &vr_dev_ops /* driver specific ops */ 3620 }; 3621 3622 static struct modlinkage modlinkage = { 3623 MODREV_1, (void *)&vr_modldrv, NULL 3624 }; 3625 3626 int 3627 _info(struct modinfo *modinfop) 3628 { 3629 return (mod_info(&modlinkage, modinfop)); 3630 } 3631 3632 int 3633 _init(void) 3634 { 3635 int status; 3636 3637 mac_init_ops(&vr_dev_ops, MODULENAME); 3638 status = mod_install(&modlinkage); 3639 if (status == DDI_SUCCESS) 3640 mutex_init(prtdata.mutex, NULL, MUTEX_DRIVER, NULL); 3641 else 3642 mac_fini_ops(&vr_dev_ops); 3643 return (status); 3644 } 3645 3646 int 3647 _fini(void) 3648 { 3649 int status; 3650 3651 status = mod_remove(&modlinkage); 3652 if (status == 0) { 3653 mac_fini_ops(&vr_dev_ops); 3654 mutex_destroy(prtdata.mutex); 3655 } 3656 return (status); 3657 } 3658