Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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sys/dev/e1000/if_lem.c
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1 /****************************************************************************** 2 3 Copyright (c) 2001-2012, Intel Corporation 4 All rights reserved. 5 6 Redistribution and use in source and binary forms, with or without 7 modification, are permitted provided that the following conditions are met: 8 9 1. Redistributions of source code must retain the above copyright notice, 10 this list of conditions and the following disclaimer. 11 12 2. Redistributions in binary form must reproduce the above copyright 13 notice, this list of conditions and the following disclaimer in the 14 documentation and/or other materials provided with the distribution. 15 16 3. Neither the name of the Intel Corporation nor the names of its 17 contributors may be used to endorse or promote products derived from 18 this software without specific prior written permission. 19 20 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 21 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 24 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 POSSIBILITY OF SUCH DAMAGE. 31 32 ******************************************************************************/ 33 /*$FreeBSD$*/ 34 35 #include "opt_inet.h" 36 #include "opt_inet6.h" 37 38 #ifdef HAVE_KERNEL_OPTION_HEADERS 39 #include "opt_device_polling.h" 40 #endif 41 42 #include <sys/param.h> 43 #include <sys/systm.h> 44 #include <sys/bus.h> 45 #include <sys/endian.h> 46 #include <sys/kernel.h> 47 #include <sys/kthread.h> 48 #include <sys/malloc.h> 49 #include <sys/mbuf.h> 50 #include <sys/module.h> 51 #include <sys/rman.h> 52 #include <sys/socket.h> 53 #include <sys/sockio.h> 54 #include <sys/sysctl.h> 55 #include <sys/taskqueue.h> 56 #include <sys/eventhandler.h> 57 #include <machine/bus.h> 58 #include <machine/resource.h> 59 60 #include <net/bpf.h> 61 #include <net/ethernet.h> 62 #include <net/if.h> 63 #include <net/if_arp.h> 64 #include <net/if_dl.h> 65 #include <net/if_media.h> 66 67 #include <net/if_types.h> 68 #include <net/if_vlan_var.h> 69 70 #include <netinet/in_systm.h> 71 #include <netinet/in.h> 72 #include <netinet/if_ether.h> 73 #include <netinet/ip.h> 74 #include <netinet/ip6.h> 75 #include <netinet/tcp.h> 76 #include <netinet/udp.h> 77 78 #include <machine/in_cksum.h> 79 #include <dev/led/led.h> 80 #include <dev/pci/pcivar.h> 81 #include <dev/pci/pcireg.h> 82 83 #include "e1000_api.h" 84 #include "if_lem.h" 85 86 /********************************************************************* 87 * Legacy Em Driver version: 88 *********************************************************************/ 89 char lem_driver_version[] = "1.0.6"; 90 91 /********************************************************************* 92 * PCI Device ID Table 93 * 94 * Used by probe to select devices to load on 95 * Last field stores an index into e1000_strings 96 * Last entry must be all 0s 97 * 98 * { Vendor ID, Device ID, SubVendor ID, SubDevice ID, String Index } 99 *********************************************************************/ 100 101 static em_vendor_info_t lem_vendor_info_array[] = 102 { 103 /* Intel(R) PRO/1000 Network Connection */ 104 { 0x8086, E1000_DEV_ID_82540EM, PCI_ANY_ID, PCI_ANY_ID, 0}, 105 { 0x8086, E1000_DEV_ID_82540EM_LOM, PCI_ANY_ID, PCI_ANY_ID, 0}, 106 { 0x8086, E1000_DEV_ID_82540EP, PCI_ANY_ID, PCI_ANY_ID, 0}, 107 { 0x8086, E1000_DEV_ID_82540EP_LOM, PCI_ANY_ID, PCI_ANY_ID, 0}, 108 { 0x8086, E1000_DEV_ID_82540EP_LP, PCI_ANY_ID, PCI_ANY_ID, 0}, 109 110 { 0x8086, E1000_DEV_ID_82541EI, PCI_ANY_ID, PCI_ANY_ID, 0}, 111 { 0x8086, E1000_DEV_ID_82541ER, PCI_ANY_ID, PCI_ANY_ID, 0}, 112 { 0x8086, E1000_DEV_ID_82541ER_LOM, PCI_ANY_ID, PCI_ANY_ID, 0}, 113 { 0x8086, E1000_DEV_ID_82541EI_MOBILE, PCI_ANY_ID, PCI_ANY_ID, 0}, 114 { 0x8086, E1000_DEV_ID_82541GI, PCI_ANY_ID, PCI_ANY_ID, 0}, 115 { 0x8086, E1000_DEV_ID_82541GI_LF, PCI_ANY_ID, PCI_ANY_ID, 0}, 116 { 0x8086, E1000_DEV_ID_82541GI_MOBILE, PCI_ANY_ID, PCI_ANY_ID, 0}, 117 118 { 0x8086, E1000_DEV_ID_82542, PCI_ANY_ID, PCI_ANY_ID, 0}, 119 120 { 0x8086, E1000_DEV_ID_82543GC_FIBER, PCI_ANY_ID, PCI_ANY_ID, 0}, 121 { 0x8086, E1000_DEV_ID_82543GC_COPPER, PCI_ANY_ID, PCI_ANY_ID, 0}, 122 123 { 0x8086, E1000_DEV_ID_82544EI_COPPER, PCI_ANY_ID, PCI_ANY_ID, 0}, 124 { 0x8086, E1000_DEV_ID_82544EI_FIBER, PCI_ANY_ID, PCI_ANY_ID, 0}, 125 { 0x8086, E1000_DEV_ID_82544GC_COPPER, PCI_ANY_ID, PCI_ANY_ID, 0}, 126 { 0x8086, E1000_DEV_ID_82544GC_LOM, PCI_ANY_ID, PCI_ANY_ID, 0}, 127 128 { 0x8086, E1000_DEV_ID_82545EM_COPPER, PCI_ANY_ID, PCI_ANY_ID, 0}, 129 { 0x8086, E1000_DEV_ID_82545EM_FIBER, PCI_ANY_ID, PCI_ANY_ID, 0}, 130 { 0x8086, E1000_DEV_ID_82545GM_COPPER, PCI_ANY_ID, PCI_ANY_ID, 0}, 131 { 0x8086, E1000_DEV_ID_82545GM_FIBER, PCI_ANY_ID, PCI_ANY_ID, 0}, 132 { 0x8086, E1000_DEV_ID_82545GM_SERDES, PCI_ANY_ID, PCI_ANY_ID, 0}, 133 134 { 0x8086, E1000_DEV_ID_82546EB_COPPER, PCI_ANY_ID, PCI_ANY_ID, 0}, 135 { 0x8086, E1000_DEV_ID_82546EB_FIBER, PCI_ANY_ID, PCI_ANY_ID, 0}, 136 { 0x8086, E1000_DEV_ID_82546EB_QUAD_COPPER, PCI_ANY_ID, PCI_ANY_ID, 0}, 137 { 0x8086, E1000_DEV_ID_82546GB_COPPER, PCI_ANY_ID, PCI_ANY_ID, 0}, 138 { 0x8086, E1000_DEV_ID_82546GB_FIBER, PCI_ANY_ID, PCI_ANY_ID, 0}, 139 { 0x8086, E1000_DEV_ID_82546GB_SERDES, PCI_ANY_ID, PCI_ANY_ID, 0}, 140 { 0x8086, E1000_DEV_ID_82546GB_PCIE, PCI_ANY_ID, PCI_ANY_ID, 0}, 141 { 0x8086, E1000_DEV_ID_82546GB_QUAD_COPPER, PCI_ANY_ID, PCI_ANY_ID, 0}, 142 { 0x8086, E1000_DEV_ID_82546GB_QUAD_COPPER_KSP3, 143 PCI_ANY_ID, PCI_ANY_ID, 0}, 144 145 { 0x8086, E1000_DEV_ID_82547EI, PCI_ANY_ID, PCI_ANY_ID, 0}, 146 { 0x8086, E1000_DEV_ID_82547EI_MOBILE, PCI_ANY_ID, PCI_ANY_ID, 0}, 147 { 0x8086, E1000_DEV_ID_82547GI, PCI_ANY_ID, PCI_ANY_ID, 0}, 148 /* required last entry */ 149 { 0, 0, 0, 0, 0} 150 }; 151 152 /********************************************************************* 153 * Table of branding strings for all supported NICs. 154 *********************************************************************/ 155 156 static char *lem_strings[] = { 157 "Intel(R) PRO/1000 Legacy Network Connection" 158 }; 159 160 /********************************************************************* 161 * Function prototypes 162 *********************************************************************/ 163 static int lem_probe(device_t); 164 static int lem_attach(device_t); 165 static int lem_detach(device_t); 166 static int lem_shutdown(device_t); 167 static int lem_suspend(device_t); 168 static int lem_resume(device_t); 169 static void lem_start(struct ifnet *); 170 static void lem_start_locked(struct ifnet *ifp); 171 static int lem_ioctl(struct ifnet *, u_long, caddr_t); 172 static void lem_init(void *); 173 static void lem_init_locked(struct adapter *); 174 static void lem_stop(void *); 175 static void lem_media_status(struct ifnet *, struct ifmediareq *); 176 static int lem_media_change(struct ifnet *); 177 static void lem_identify_hardware(struct adapter *); 178 static int lem_allocate_pci_resources(struct adapter *); 179 static int lem_allocate_irq(struct adapter *adapter); 180 static void lem_free_pci_resources(struct adapter *); 181 static void lem_local_timer(void *); 182 static int lem_hardware_init(struct adapter *); 183 static int lem_setup_interface(device_t, struct adapter *); 184 static void lem_setup_transmit_structures(struct adapter *); 185 static void lem_initialize_transmit_unit(struct adapter *); 186 static int lem_setup_receive_structures(struct adapter *); 187 static void lem_initialize_receive_unit(struct adapter *); 188 static void lem_enable_intr(struct adapter *); 189 static void lem_disable_intr(struct adapter *); 190 static void lem_free_transmit_structures(struct adapter *); 191 static void lem_free_receive_structures(struct adapter *); 192 static void lem_update_stats_counters(struct adapter *); 193 static void lem_add_hw_stats(struct adapter *adapter); 194 static void lem_txeof(struct adapter *); 195 static void lem_tx_purge(struct adapter *); 196 static int lem_allocate_receive_structures(struct adapter *); 197 static int lem_allocate_transmit_structures(struct adapter *); 198 static bool lem_rxeof(struct adapter *, int, int *); 199 #ifndef __NO_STRICT_ALIGNMENT 200 static int lem_fixup_rx(struct adapter *); 201 #endif 202 static void lem_receive_checksum(struct adapter *, struct e1000_rx_desc *, 203 struct mbuf *); 204 static void lem_transmit_checksum_setup(struct adapter *, struct mbuf *, 205 u32 *, u32 *); 206 static void lem_set_promisc(struct adapter *); 207 static void lem_disable_promisc(struct adapter *); 208 static void lem_set_multi(struct adapter *); 209 static void lem_update_link_status(struct adapter *); 210 static int lem_get_buf(struct adapter *, int); 211 static void lem_register_vlan(void *, struct ifnet *, u16); 212 static void lem_unregister_vlan(void *, struct ifnet *, u16); 213 static void lem_setup_vlan_hw_support(struct adapter *); 214 static int lem_xmit(struct adapter *, struct mbuf **); 215 static void lem_smartspeed(struct adapter *); 216 static int lem_82547_fifo_workaround(struct adapter *, int); 217 static void lem_82547_update_fifo_head(struct adapter *, int); 218 static int lem_82547_tx_fifo_reset(struct adapter *); 219 static void lem_82547_move_tail(void *); 220 static int lem_dma_malloc(struct adapter *, bus_size_t, 221 struct em_dma_alloc *, int); 222 static void lem_dma_free(struct adapter *, struct em_dma_alloc *); 223 static int lem_sysctl_nvm_info(SYSCTL_HANDLER_ARGS); 224 static void lem_print_nvm_info(struct adapter *); 225 static int lem_is_valid_ether_addr(u8 *); 226 static u32 lem_fill_descriptors (bus_addr_t address, u32 length, 227 PDESC_ARRAY desc_array); 228 static int lem_sysctl_int_delay(SYSCTL_HANDLER_ARGS); 229 static void lem_add_int_delay_sysctl(struct adapter *, const char *, 230 const char *, struct em_int_delay_info *, int, int); 231 static void lem_set_flow_cntrl(struct adapter *, const char *, 232 const char *, int *, int); 233 /* Management and WOL Support */ 234 static void lem_init_manageability(struct adapter *); 235 static void lem_release_manageability(struct adapter *); 236 static void lem_get_hw_control(struct adapter *); 237 static void lem_release_hw_control(struct adapter *); 238 static void lem_get_wakeup(device_t); 239 static void lem_enable_wakeup(device_t); 240 static int lem_enable_phy_wakeup(struct adapter *); 241 static void lem_led_func(void *, int); 242 243 static void lem_intr(void *); 244 static int lem_irq_fast(void *); 245 static void lem_handle_rxtx(void *context, int pending); 246 static void lem_handle_link(void *context, int pending); 247 static void lem_add_rx_process_limit(struct adapter *, const char *, 248 const char *, int *, int); 249 250 #ifdef DEVICE_POLLING 251 static poll_handler_t lem_poll; 252 #endif /* POLLING */ 253 254 /********************************************************************* 255 * FreeBSD Device Interface Entry Points 256 *********************************************************************/ 257 258 static device_method_t lem_methods[] = { 259 /* Device interface */ 260 DEVMETHOD(device_probe, lem_probe), 261 DEVMETHOD(device_attach, lem_attach), 262 DEVMETHOD(device_detach, lem_detach), 263 DEVMETHOD(device_shutdown, lem_shutdown), 264 DEVMETHOD(device_suspend, lem_suspend), 265 DEVMETHOD(device_resume, lem_resume), 266 DEVMETHOD_END 267 }; 268 269 static driver_t lem_driver = { 270 "em", lem_methods, sizeof(struct adapter), 271 }; 272 273 extern devclass_t em_devclass; 274 DRIVER_MODULE(lem, pci, lem_driver, em_devclass, 0, 0); 275 MODULE_DEPEND(lem, pci, 1, 1, 1); 276 MODULE_DEPEND(lem, ether, 1, 1, 1); 277 278 /********************************************************************* 279 * Tunable default values. 280 *********************************************************************/ 281 282 #define EM_TICKS_TO_USECS(ticks) ((1024 * (ticks) + 500) / 1000) 283 #define EM_USECS_TO_TICKS(usecs) ((1000 * (usecs) + 512) / 1024) 284 285 #define MAX_INTS_PER_SEC 8000 286 #define DEFAULT_ITR (1000000000/(MAX_INTS_PER_SEC * 256)) 287 288 static int lem_tx_int_delay_dflt = EM_TICKS_TO_USECS(EM_TIDV); 289 static int lem_rx_int_delay_dflt = EM_TICKS_TO_USECS(EM_RDTR); 290 static int lem_tx_abs_int_delay_dflt = EM_TICKS_TO_USECS(EM_TADV); 291 static int lem_rx_abs_int_delay_dflt = EM_TICKS_TO_USECS(EM_RADV); 292 static int lem_rxd = EM_DEFAULT_RXD; 293 static int lem_txd = EM_DEFAULT_TXD; 294 static int lem_smart_pwr_down = FALSE; 295 296 /* Controls whether promiscuous also shows bad packets */ 297 static int lem_debug_sbp = FALSE; 298 299 TUNABLE_INT("hw.em.tx_int_delay", &lem_tx_int_delay_dflt); 300 TUNABLE_INT("hw.em.rx_int_delay", &lem_rx_int_delay_dflt); 301 TUNABLE_INT("hw.em.tx_abs_int_delay", &lem_tx_abs_int_delay_dflt); 302 TUNABLE_INT("hw.em.rx_abs_int_delay", &lem_rx_abs_int_delay_dflt); 303 TUNABLE_INT("hw.em.rxd", &lem_rxd); 304 TUNABLE_INT("hw.em.txd", &lem_txd); 305 TUNABLE_INT("hw.em.smart_pwr_down", &lem_smart_pwr_down); 306 TUNABLE_INT("hw.em.sbp", &lem_debug_sbp); 307 308 /* Interrupt style - default to fast */ 309 static int lem_use_legacy_irq = 0; 310 TUNABLE_INT("hw.em.use_legacy_irq", &lem_use_legacy_irq); 311 312 /* How many packets rxeof tries to clean at a time */ 313 static int lem_rx_process_limit = 100; 314 TUNABLE_INT("hw.em.rx_process_limit", &lem_rx_process_limit); 315 316 /* Flow control setting - default to FULL */ 317 static int lem_fc_setting = e1000_fc_full; 318 TUNABLE_INT("hw.em.fc_setting", &lem_fc_setting); 319 320 /* Global used in WOL setup with multiport cards */ 321 static int global_quad_port_a = 0; 322 323 #ifdef DEV_NETMAP /* see ixgbe.c for details */ 324 #include <dev/netmap/if_lem_netmap.h> 325 #endif /* DEV_NETMAP */ 326 327 /********************************************************************* 328 * Device identification routine 329 * 330 * em_probe determines if the driver should be loaded on 331 * adapter based on PCI vendor/device id of the adapter. 332 * 333 * return BUS_PROBE_DEFAULT on success, positive on failure 334 *********************************************************************/ 335 336 static int 337 lem_probe(device_t dev) 338 { 339 char adapter_name[60]; 340 u16 pci_vendor_id = 0; 341 u16 pci_device_id = 0; 342 u16 pci_subvendor_id = 0; 343 u16 pci_subdevice_id = 0; 344 em_vendor_info_t *ent; 345 346 INIT_DEBUGOUT("em_probe: begin"); 347 348 pci_vendor_id = pci_get_vendor(dev); 349 if (pci_vendor_id != EM_VENDOR_ID) 350 return (ENXIO); 351 352 pci_device_id = pci_get_device(dev); 353 pci_subvendor_id = pci_get_subvendor(dev); 354 pci_subdevice_id = pci_get_subdevice(dev); 355 356 ent = lem_vendor_info_array; 357 while (ent->vendor_id != 0) { 358 if ((pci_vendor_id == ent->vendor_id) && 359 (pci_device_id == ent->device_id) && 360 361 ((pci_subvendor_id == ent->subvendor_id) || 362 (ent->subvendor_id == PCI_ANY_ID)) && 363 364 ((pci_subdevice_id == ent->subdevice_id) || 365 (ent->subdevice_id == PCI_ANY_ID))) { 366 sprintf(adapter_name, "%s %s", 367 lem_strings[ent->index], 368 lem_driver_version); 369 device_set_desc_copy(dev, adapter_name); 370 return (BUS_PROBE_DEFAULT); 371 } 372 ent++; 373 } 374 375 return (ENXIO); 376 } 377 378 /********************************************************************* 379 * Device initialization routine 380 * 381 * The attach entry point is called when the driver is being loaded. 382 * This routine identifies the type of hardware, allocates all resources 383 * and initializes the hardware. 384 * 385 * return 0 on success, positive on failure 386 *********************************************************************/ 387 388 static int 389 lem_attach(device_t dev) 390 { 391 struct adapter *adapter; 392 int tsize, rsize; 393 int error = 0; 394 395 INIT_DEBUGOUT("lem_attach: begin"); 396 397 adapter = device_get_softc(dev); 398 adapter->dev = adapter->osdep.dev = dev; 399 EM_CORE_LOCK_INIT(adapter, device_get_nameunit(dev)); 400 EM_TX_LOCK_INIT(adapter, device_get_nameunit(dev)); 401 EM_RX_LOCK_INIT(adapter, device_get_nameunit(dev)); 402 403 /* SYSCTL stuff */ 404 SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev), 405 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), 406 OID_AUTO, "nvm", CTLTYPE_INT|CTLFLAG_RW, adapter, 0, 407 lem_sysctl_nvm_info, "I", "NVM Information"); 408 409 callout_init_mtx(&adapter->timer, &adapter->core_mtx, 0); 410 callout_init_mtx(&adapter->tx_fifo_timer, &adapter->tx_mtx, 0); 411 412 /* Determine hardware and mac info */ 413 lem_identify_hardware(adapter); 414 415 /* Setup PCI resources */ 416 if (lem_allocate_pci_resources(adapter)) { 417 device_printf(dev, "Allocation of PCI resources failed\n"); 418 error = ENXIO; 419 goto err_pci; 420 } 421 422 /* Do Shared Code initialization */ 423 if (e1000_setup_init_funcs(&adapter->hw, TRUE)) { 424 device_printf(dev, "Setup of Shared code failed\n"); 425 error = ENXIO; 426 goto err_pci; 427 } 428 429 e1000_get_bus_info(&adapter->hw); 430 431 /* Set up some sysctls for the tunable interrupt delays */ 432 lem_add_int_delay_sysctl(adapter, "rx_int_delay", 433 "receive interrupt delay in usecs", &adapter->rx_int_delay, 434 E1000_REGISTER(&adapter->hw, E1000_RDTR), lem_rx_int_delay_dflt); 435 lem_add_int_delay_sysctl(adapter, "tx_int_delay", 436 "transmit interrupt delay in usecs", &adapter->tx_int_delay, 437 E1000_REGISTER(&adapter->hw, E1000_TIDV), lem_tx_int_delay_dflt); 438 if (adapter->hw.mac.type >= e1000_82540) { 439 lem_add_int_delay_sysctl(adapter, "rx_abs_int_delay", 440 "receive interrupt delay limit in usecs", 441 &adapter->rx_abs_int_delay, 442 E1000_REGISTER(&adapter->hw, E1000_RADV), 443 lem_rx_abs_int_delay_dflt); 444 lem_add_int_delay_sysctl(adapter, "tx_abs_int_delay", 445 "transmit interrupt delay limit in usecs", 446 &adapter->tx_abs_int_delay, 447 E1000_REGISTER(&adapter->hw, E1000_TADV), 448 lem_tx_abs_int_delay_dflt); 449 lem_add_int_delay_sysctl(adapter, "itr", 450 "interrupt delay limit in usecs/4", 451 &adapter->tx_itr, 452 E1000_REGISTER(&adapter->hw, E1000_ITR), 453 DEFAULT_ITR); 454 } 455 456 /* Sysctls for limiting the amount of work done in the taskqueue */ 457 lem_add_rx_process_limit(adapter, "rx_processing_limit", 458 "max number of rx packets to process", &adapter->rx_process_limit, 459 lem_rx_process_limit); 460 461 /* Sysctl for setting the interface flow control */ 462 lem_set_flow_cntrl(adapter, "flow_control", 463 "flow control setting", 464 &adapter->fc_setting, lem_fc_setting); 465 466 /* 467 * Validate number of transmit and receive descriptors. It 468 * must not exceed hardware maximum, and must be multiple 469 * of E1000_DBA_ALIGN. 470 */ 471 if (((lem_txd * sizeof(struct e1000_tx_desc)) % EM_DBA_ALIGN) != 0 || 472 (adapter->hw.mac.type >= e1000_82544 && lem_txd > EM_MAX_TXD) || 473 (adapter->hw.mac.type < e1000_82544 && lem_txd > EM_MAX_TXD_82543) || 474 (lem_txd < EM_MIN_TXD)) { 475 device_printf(dev, "Using %d TX descriptors instead of %d!\n", 476 EM_DEFAULT_TXD, lem_txd); 477 adapter->num_tx_desc = EM_DEFAULT_TXD; 478 } else 479 adapter->num_tx_desc = lem_txd; 480 if (((lem_rxd * sizeof(struct e1000_rx_desc)) % EM_DBA_ALIGN) != 0 || 481 (adapter->hw.mac.type >= e1000_82544 && lem_rxd > EM_MAX_RXD) || 482 (adapter->hw.mac.type < e1000_82544 && lem_rxd > EM_MAX_RXD_82543) || 483 (lem_rxd < EM_MIN_RXD)) { 484 device_printf(dev, "Using %d RX descriptors instead of %d!\n", 485 EM_DEFAULT_RXD, lem_rxd); 486 adapter->num_rx_desc = EM_DEFAULT_RXD; 487 } else 488 adapter->num_rx_desc = lem_rxd; 489 490 adapter->hw.mac.autoneg = DO_AUTO_NEG; 491 adapter->hw.phy.autoneg_wait_to_complete = FALSE; 492 adapter->hw.phy.autoneg_advertised = AUTONEG_ADV_DEFAULT; 493 adapter->rx_buffer_len = 2048; 494 495 e1000_init_script_state_82541(&adapter->hw, TRUE); 496 e1000_set_tbi_compatibility_82543(&adapter->hw, TRUE); 497 498 /* Copper options */ 499 if (adapter->hw.phy.media_type == e1000_media_type_copper) { 500 adapter->hw.phy.mdix = AUTO_ALL_MODES; 501 adapter->hw.phy.disable_polarity_correction = FALSE; 502 adapter->hw.phy.ms_type = EM_MASTER_SLAVE; 503 } 504 505 /* 506 * Set the frame limits assuming 507 * standard ethernet sized frames. 508 */ 509 adapter->max_frame_size = ETHERMTU + ETHER_HDR_LEN + ETHERNET_FCS_SIZE; 510 adapter->min_frame_size = ETH_ZLEN + ETHERNET_FCS_SIZE; 511 512 /* 513 * This controls when hardware reports transmit completion 514 * status. 515 */ 516 adapter->hw.mac.report_tx_early = 1; 517 518 tsize = roundup2(adapter->num_tx_desc * sizeof(struct e1000_tx_desc), 519 EM_DBA_ALIGN); 520 521 /* Allocate Transmit Descriptor ring */ 522 if (lem_dma_malloc(adapter, tsize, &adapter->txdma, BUS_DMA_NOWAIT)) { 523 device_printf(dev, "Unable to allocate tx_desc memory\n"); 524 error = ENOMEM; 525 goto err_tx_desc; 526 } 527 adapter->tx_desc_base = 528 (struct e1000_tx_desc *)adapter->txdma.dma_vaddr; 529 530 rsize = roundup2(adapter->num_rx_desc * sizeof(struct e1000_rx_desc), 531 EM_DBA_ALIGN); 532 533 /* Allocate Receive Descriptor ring */ 534 if (lem_dma_malloc(adapter, rsize, &adapter->rxdma, BUS_DMA_NOWAIT)) { 535 device_printf(dev, "Unable to allocate rx_desc memory\n"); 536 error = ENOMEM; 537 goto err_rx_desc; 538 } 539 adapter->rx_desc_base = 540 (struct e1000_rx_desc *)adapter->rxdma.dma_vaddr; 541 542 /* Allocate multicast array memory. */ 543 adapter->mta = malloc(sizeof(u8) * ETH_ADDR_LEN * 544 MAX_NUM_MULTICAST_ADDRESSES, M_DEVBUF, M_NOWAIT); 545 if (adapter->mta == NULL) { 546 device_printf(dev, "Can not allocate multicast setup array\n"); 547 error = ENOMEM; 548 goto err_hw_init; 549 } 550 551 /* 552 ** Start from a known state, this is 553 ** important in reading the nvm and 554 ** mac from that. 555 */ 556 e1000_reset_hw(&adapter->hw); 557 558 /* Make sure we have a good EEPROM before we read from it */ 559 if (e1000_validate_nvm_checksum(&adapter->hw) < 0) { 560 /* 561 ** Some PCI-E parts fail the first check due to 562 ** the link being in sleep state, call it again, 563 ** if it fails a second time its a real issue. 564 */ 565 if (e1000_validate_nvm_checksum(&adapter->hw) < 0) { 566 device_printf(dev, 567 "The EEPROM Checksum Is Not Valid\n"); 568 error = EIO; 569 goto err_hw_init; 570 } 571 } 572 573 /* Copy the permanent MAC address out of the EEPROM */ 574 if (e1000_read_mac_addr(&adapter->hw) < 0) { 575 device_printf(dev, "EEPROM read error while reading MAC" 576 " address\n"); 577 error = EIO; 578 goto err_hw_init; 579 } 580 581 if (!lem_is_valid_ether_addr(adapter->hw.mac.addr)) { 582 device_printf(dev, "Invalid MAC address\n"); 583 error = EIO; 584 goto err_hw_init; 585 } 586 587 /* Initialize the hardware */ 588 if (lem_hardware_init(adapter)) { 589 device_printf(dev, "Unable to initialize the hardware\n"); 590 error = EIO; 591 goto err_hw_init; 592 } 593 594 /* Allocate transmit descriptors and buffers */ 595 if (lem_allocate_transmit_structures(adapter)) { 596 device_printf(dev, "Could not setup transmit structures\n"); 597 error = ENOMEM; 598 goto err_tx_struct; 599 } 600 601 /* Allocate receive descriptors and buffers */ 602 if (lem_allocate_receive_structures(adapter)) { 603 device_printf(dev, "Could not setup receive structures\n"); 604 error = ENOMEM; 605 goto err_rx_struct; 606 } 607 608 /* 609 ** Do interrupt configuration 610 */ 611 error = lem_allocate_irq(adapter); 612 if (error) 613 goto err_rx_struct; 614 615 /* 616 * Get Wake-on-Lan and Management info for later use 617 */ 618 lem_get_wakeup(dev); 619 620 /* Setup OS specific network interface */ 621 if (lem_setup_interface(dev, adapter) != 0) 622 goto err_rx_struct; 623 624 /* Initialize statistics */ 625 lem_update_stats_counters(adapter); 626 627 adapter->hw.mac.get_link_status = 1; 628 lem_update_link_status(adapter); 629 630 /* Indicate SOL/IDER usage */ 631 if (e1000_check_reset_block(&adapter->hw)) 632 device_printf(dev, 633 "PHY reset is blocked due to SOL/IDER session.\n"); 634 635 /* Do we need workaround for 82544 PCI-X adapter? */ 636 if (adapter->hw.bus.type == e1000_bus_type_pcix && 637 adapter->hw.mac.type == e1000_82544) 638 adapter->pcix_82544 = TRUE; 639 else 640 adapter->pcix_82544 = FALSE; 641 642 /* Register for VLAN events */ 643 adapter->vlan_attach = EVENTHANDLER_REGISTER(vlan_config, 644 lem_register_vlan, adapter, EVENTHANDLER_PRI_FIRST); 645 adapter->vlan_detach = EVENTHANDLER_REGISTER(vlan_unconfig, 646 lem_unregister_vlan, adapter, EVENTHANDLER_PRI_FIRST); 647 648 lem_add_hw_stats(adapter); 649 650 /* Non-AMT based hardware can now take control from firmware */ 651 if (adapter->has_manage && !adapter->has_amt) 652 lem_get_hw_control(adapter); 653 654 /* Tell the stack that the interface is not active */ 655 adapter->ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE); 656 657 adapter->led_dev = led_create(lem_led_func, adapter, 658 device_get_nameunit(dev)); 659 660 #ifdef DEV_NETMAP 661 lem_netmap_attach(adapter); 662 #endif /* DEV_NETMAP */ 663 INIT_DEBUGOUT("lem_attach: end"); 664 665 return (0); 666 667 err_rx_struct: 668 lem_free_transmit_structures(adapter); 669 err_tx_struct: 670 err_hw_init: 671 lem_release_hw_control(adapter); 672 lem_dma_free(adapter, &adapter->rxdma); 673 err_rx_desc: 674 lem_dma_free(adapter, &adapter->txdma); 675 err_tx_desc: 676 err_pci: 677 if (adapter->ifp != NULL) 678 if_free(adapter->ifp); 679 lem_free_pci_resources(adapter); 680 free(adapter->mta, M_DEVBUF); 681 EM_TX_LOCK_DESTROY(adapter); 682 EM_RX_LOCK_DESTROY(adapter); 683 EM_CORE_LOCK_DESTROY(adapter); 684 685 return (error); 686 } 687 688 /********************************************************************* 689 * Device removal routine 690 * 691 * The detach entry point is called when the driver is being removed. 692 * This routine stops the adapter and deallocates all the resources 693 * that were allocated for driver operation. 694 * 695 * return 0 on success, positive on failure 696 *********************************************************************/ 697 698 static int 699 lem_detach(device_t dev) 700 { 701 struct adapter *adapter = device_get_softc(dev); 702 struct ifnet *ifp = adapter->ifp; 703 704 INIT_DEBUGOUT("em_detach: begin"); 705 706 /* Make sure VLANS are not using driver */ 707 if (adapter->ifp->if_vlantrunk != NULL) { 708 device_printf(dev,"Vlan in use, detach first\n"); 709 return (EBUSY); 710 } 711 712 #ifdef DEVICE_POLLING 713 if (ifp->if_capenable & IFCAP_POLLING) 714 ether_poll_deregister(ifp); 715 #endif 716 717 if (adapter->led_dev != NULL) 718 led_destroy(adapter->led_dev); 719 720 EM_CORE_LOCK(adapter); 721 EM_TX_LOCK(adapter); 722 adapter->in_detach = 1; 723 lem_stop(adapter); 724 e1000_phy_hw_reset(&adapter->hw); 725 726 lem_release_manageability(adapter); 727 728 EM_TX_UNLOCK(adapter); 729 EM_CORE_UNLOCK(adapter); 730 731 /* Unregister VLAN events */ 732 if (adapter->vlan_attach != NULL) 733 EVENTHANDLER_DEREGISTER(vlan_config, adapter->vlan_attach); 734 if (adapter->vlan_detach != NULL) 735 EVENTHANDLER_DEREGISTER(vlan_unconfig, adapter->vlan_detach); 736 737 ether_ifdetach(adapter->ifp); 738 callout_drain(&adapter->timer); 739 callout_drain(&adapter->tx_fifo_timer); 740 741 #ifdef DEV_NETMAP 742 netmap_detach(ifp); 743 #endif /* DEV_NETMAP */ 744 lem_free_pci_resources(adapter); 745 bus_generic_detach(dev); 746 if_free(ifp); 747 748 lem_free_transmit_structures(adapter); 749 lem_free_receive_structures(adapter); 750 751 /* Free Transmit Descriptor ring */ 752 if (adapter->tx_desc_base) { 753 lem_dma_free(adapter, &adapter->txdma); 754 adapter->tx_desc_base = NULL; 755 } 756 757 /* Free Receive Descriptor ring */ 758 if (adapter->rx_desc_base) { 759 lem_dma_free(adapter, &adapter->rxdma); 760 adapter->rx_desc_base = NULL; 761 } 762 763 lem_release_hw_control(adapter); 764 free(adapter->mta, M_DEVBUF); 765 EM_TX_LOCK_DESTROY(adapter); 766 EM_RX_LOCK_DESTROY(adapter); 767 EM_CORE_LOCK_DESTROY(adapter); 768 769 return (0); 770 } 771 772 /********************************************************************* 773 * 774 * Shutdown entry point 775 * 776 **********************************************************************/ 777 778 static int 779 lem_shutdown(device_t dev) 780 { 781 return lem_suspend(dev); 782 } 783 784 /* 785 * Suspend/resume device methods. 786 */ 787 static int 788 lem_suspend(device_t dev) 789 { 790 struct adapter *adapter = device_get_softc(dev); 791 792 EM_CORE_LOCK(adapter); 793 794 lem_release_manageability(adapter); 795 lem_release_hw_control(adapter); 796 lem_enable_wakeup(dev); 797 798 EM_CORE_UNLOCK(adapter); 799 800 return bus_generic_suspend(dev); 801 } 802 803 static int 804 lem_resume(device_t dev) 805 { 806 struct adapter *adapter = device_get_softc(dev); 807 struct ifnet *ifp = adapter->ifp; 808 809 EM_CORE_LOCK(adapter); 810 lem_init_locked(adapter); 811 lem_init_manageability(adapter); 812 EM_CORE_UNLOCK(adapter); 813 lem_start(ifp); 814 815 return bus_generic_resume(dev); 816 } 817 818 819 static void 820 lem_start_locked(struct ifnet *ifp) 821 { 822 struct adapter *adapter = ifp->if_softc; 823 struct mbuf *m_head; 824 825 EM_TX_LOCK_ASSERT(adapter); 826 827 if ((ifp->if_drv_flags & (IFF_DRV_RUNNING|IFF_DRV_OACTIVE)) != 828 IFF_DRV_RUNNING) 829 return; 830 if (!adapter->link_active) 831 return; 832 833 /* 834 * Force a cleanup if number of TX descriptors 835 * available hits the threshold 836 */ 837 if (adapter->num_tx_desc_avail <= EM_TX_CLEANUP_THRESHOLD) { 838 lem_txeof(adapter); 839 /* Now do we at least have a minimal? */ 840 if (adapter->num_tx_desc_avail <= EM_TX_OP_THRESHOLD) { 841 adapter->no_tx_desc_avail1++; 842 return; 843 } 844 } 845 846 while (!IFQ_DRV_IS_EMPTY(&ifp->if_snd)) { 847 848 IFQ_DRV_DEQUEUE(&ifp->if_snd, m_head); 849 if (m_head == NULL) 850 break; 851 /* 852 * Encapsulation can modify our pointer, and or make it 853 * NULL on failure. In that event, we can't requeue. 854 */ 855 if (lem_xmit(adapter, &m_head)) { 856 if (m_head == NULL) 857 break; 858 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 859 IFQ_DRV_PREPEND(&ifp->if_snd, m_head); 860 break; 861 } 862 863 /* Send a copy of the frame to the BPF listener */ 864 ETHER_BPF_MTAP(ifp, m_head); 865 866 /* Set timeout in case hardware has problems transmitting. */ 867 adapter->watchdog_check = TRUE; 868 adapter->watchdog_time = ticks; 869 } 870 if (adapter->num_tx_desc_avail <= EM_TX_OP_THRESHOLD) 871 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 872 873 return; 874 } 875 876 static void 877 lem_start(struct ifnet *ifp) 878 { 879 struct adapter *adapter = ifp->if_softc; 880 881 EM_TX_LOCK(adapter); 882 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 883 lem_start_locked(ifp); 884 EM_TX_UNLOCK(adapter); 885 } 886 887 /********************************************************************* 888 * Ioctl entry point 889 * 890 * em_ioctl is called when the user wants to configure the 891 * interface. 892 * 893 * return 0 on success, positive on failure 894 **********************************************************************/ 895 896 static int 897 lem_ioctl(struct ifnet *ifp, u_long command, caddr_t data) 898 { 899 struct adapter *adapter = ifp->if_softc; 900 struct ifreq *ifr = (struct ifreq *)data; 901 #if defined(INET) || defined(INET6) 902 struct ifaddr *ifa = (struct ifaddr *)data; 903 #endif 904 bool avoid_reset = FALSE; 905 int error = 0; 906 907 if (adapter->in_detach) 908 return (error); 909 910 switch (command) { 911 case SIOCSIFADDR: 912 #ifdef INET 913 if (ifa->ifa_addr->sa_family == AF_INET) 914 avoid_reset = TRUE; 915 #endif 916 #ifdef INET6 917 if (ifa->ifa_addr->sa_family == AF_INET6) 918 avoid_reset = TRUE; 919 #endif 920 /* 921 ** Calling init results in link renegotiation, 922 ** so we avoid doing it when possible. 923 */ 924 if (avoid_reset) { 925 ifp->if_flags |= IFF_UP; 926 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) 927 lem_init(adapter); 928 #ifdef INET 929 if (!(ifp->if_flags & IFF_NOARP)) 930 arp_ifinit(ifp, ifa); 931 #endif 932 } else 933 error = ether_ioctl(ifp, command, data); 934 break; 935 case SIOCSIFMTU: 936 { 937 int max_frame_size; 938 939 IOCTL_DEBUGOUT("ioctl rcv'd: SIOCSIFMTU (Set Interface MTU)"); 940 941 EM_CORE_LOCK(adapter); 942 switch (adapter->hw.mac.type) { 943 case e1000_82542: 944 max_frame_size = ETHER_MAX_LEN; 945 break; 946 default: 947 max_frame_size = MAX_JUMBO_FRAME_SIZE; 948 } 949 if (ifr->ifr_mtu > max_frame_size - ETHER_HDR_LEN - 950 ETHER_CRC_LEN) { 951 EM_CORE_UNLOCK(adapter); 952 error = EINVAL; 953 break; 954 } 955 956 ifp->if_mtu = ifr->ifr_mtu; 957 adapter->max_frame_size = 958 ifp->if_mtu + ETHER_HDR_LEN + ETHER_CRC_LEN; 959 lem_init_locked(adapter); 960 EM_CORE_UNLOCK(adapter); 961 break; 962 } 963 case SIOCSIFFLAGS: 964 IOCTL_DEBUGOUT("ioctl rcv'd:\ 965 SIOCSIFFLAGS (Set Interface Flags)"); 966 EM_CORE_LOCK(adapter); 967 if (ifp->if_flags & IFF_UP) { 968 if ((ifp->if_drv_flags & IFF_DRV_RUNNING)) { 969 if ((ifp->if_flags ^ adapter->if_flags) & 970 (IFF_PROMISC | IFF_ALLMULTI)) { 971 lem_disable_promisc(adapter); 972 lem_set_promisc(adapter); 973 } 974 } else 975 lem_init_locked(adapter); 976 } else 977 if (ifp->if_drv_flags & IFF_DRV_RUNNING) { 978 EM_TX_LOCK(adapter); 979 lem_stop(adapter); 980 EM_TX_UNLOCK(adapter); 981 } 982 adapter->if_flags = ifp->if_flags; 983 EM_CORE_UNLOCK(adapter); 984 break; 985 case SIOCADDMULTI: 986 case SIOCDELMULTI: 987 IOCTL_DEBUGOUT("ioctl rcv'd: SIOC(ADD|DEL)MULTI"); 988 if (ifp->if_drv_flags & IFF_DRV_RUNNING) { 989 EM_CORE_LOCK(adapter); 990 lem_disable_intr(adapter); 991 lem_set_multi(adapter); 992 if (adapter->hw.mac.type == e1000_82542 && 993 adapter->hw.revision_id == E1000_REVISION_2) { 994 lem_initialize_receive_unit(adapter); 995 } 996 #ifdef DEVICE_POLLING 997 if (!(ifp->if_capenable & IFCAP_POLLING)) 998 #endif 999 lem_enable_intr(adapter); 1000 EM_CORE_UNLOCK(adapter); 1001 } 1002 break; 1003 case SIOCSIFMEDIA: 1004 /* Check SOL/IDER usage */ 1005 EM_CORE_LOCK(adapter); 1006 if (e1000_check_reset_block(&adapter->hw)) { 1007 EM_CORE_UNLOCK(adapter); 1008 device_printf(adapter->dev, "Media change is" 1009 " blocked due to SOL/IDER session.\n"); 1010 break; 1011 } 1012 EM_CORE_UNLOCK(adapter); 1013 case SIOCGIFMEDIA: 1014 IOCTL_DEBUGOUT("ioctl rcv'd: \ 1015 SIOCxIFMEDIA (Get/Set Interface Media)"); 1016 error = ifmedia_ioctl(ifp, ifr, &adapter->media, command); 1017 break; 1018 case SIOCSIFCAP: 1019 { 1020 int mask, reinit; 1021 1022 IOCTL_DEBUGOUT("ioctl rcv'd: SIOCSIFCAP (Set Capabilities)"); 1023 reinit = 0; 1024 mask = ifr->ifr_reqcap ^ ifp->if_capenable; 1025 #ifdef DEVICE_POLLING 1026 if (mask & IFCAP_POLLING) { 1027 if (ifr->ifr_reqcap & IFCAP_POLLING) { 1028 error = ether_poll_register(lem_poll, ifp); 1029 if (error) 1030 return (error); 1031 EM_CORE_LOCK(adapter); 1032 lem_disable_intr(adapter); 1033 ifp->if_capenable |= IFCAP_POLLING; 1034 EM_CORE_UNLOCK(adapter); 1035 } else { 1036 error = ether_poll_deregister(ifp); 1037 /* Enable interrupt even in error case */ 1038 EM_CORE_LOCK(adapter); 1039 lem_enable_intr(adapter); 1040 ifp->if_capenable &= ~IFCAP_POLLING; 1041 EM_CORE_UNLOCK(adapter); 1042 } 1043 } 1044 #endif 1045 if (mask & IFCAP_HWCSUM) { 1046 ifp->if_capenable ^= IFCAP_HWCSUM; 1047 reinit = 1; 1048 } 1049 if (mask & IFCAP_VLAN_HWTAGGING) { 1050 ifp->if_capenable ^= IFCAP_VLAN_HWTAGGING; 1051 reinit = 1; 1052 } 1053 if ((mask & IFCAP_WOL) && 1054 (ifp->if_capabilities & IFCAP_WOL) != 0) { 1055 if (mask & IFCAP_WOL_MCAST) 1056 ifp->if_capenable ^= IFCAP_WOL_MCAST; 1057 if (mask & IFCAP_WOL_MAGIC) 1058 ifp->if_capenable ^= IFCAP_WOL_MAGIC; 1059 } 1060 if (reinit && (ifp->if_drv_flags & IFF_DRV_RUNNING)) 1061 lem_init(adapter); 1062 VLAN_CAPABILITIES(ifp); 1063 break; 1064 } 1065 1066 default: 1067 error = ether_ioctl(ifp, command, data); 1068 break; 1069 } 1070 1071 return (error); 1072 } 1073 1074 1075 /********************************************************************* 1076 * Init entry point 1077 * 1078 * This routine is used in two ways. It is used by the stack as 1079 * init entry point in network interface structure. It is also used 1080 * by the driver as a hw/sw initialization routine to get to a 1081 * consistent state. 1082 * 1083 * return 0 on success, positive on failure 1084 **********************************************************************/ 1085 1086 static void 1087 lem_init_locked(struct adapter *adapter) 1088 { 1089 struct ifnet *ifp = adapter->ifp; 1090 device_t dev = adapter->dev; 1091 u32 pba; 1092 1093 INIT_DEBUGOUT("lem_init: begin"); 1094 1095 EM_CORE_LOCK_ASSERT(adapter); 1096 1097 EM_TX_LOCK(adapter); 1098 lem_stop(adapter); 1099 EM_TX_UNLOCK(adapter); 1100 1101 /* 1102 * Packet Buffer Allocation (PBA) 1103 * Writing PBA sets the receive portion of the buffer 1104 * the remainder is used for the transmit buffer. 1105 * 1106 * Devices before the 82547 had a Packet Buffer of 64K. 1107 * Default allocation: PBA=48K for Rx, leaving 16K for Tx. 1108 * After the 82547 the buffer was reduced to 40K. 1109 * Default allocation: PBA=30K for Rx, leaving 10K for Tx. 1110 * Note: default does not leave enough room for Jumbo Frame >10k. 1111 */ 1112 switch (adapter->hw.mac.type) { 1113 case e1000_82547: 1114 case e1000_82547_rev_2: /* 82547: Total Packet Buffer is 40K */ 1115 if (adapter->max_frame_size > 8192) 1116 pba = E1000_PBA_22K; /* 22K for Rx, 18K for Tx */ 1117 else 1118 pba = E1000_PBA_30K; /* 30K for Rx, 10K for Tx */ 1119 adapter->tx_fifo_head = 0; 1120 adapter->tx_head_addr = pba << EM_TX_HEAD_ADDR_SHIFT; 1121 adapter->tx_fifo_size = 1122 (E1000_PBA_40K - pba) << EM_PBA_BYTES_SHIFT; 1123 break; 1124 default: 1125 /* Devices before 82547 had a Packet Buffer of 64K. */ 1126 if (adapter->max_frame_size > 8192) 1127 pba = E1000_PBA_40K; /* 40K for Rx, 24K for Tx */ 1128 else 1129 pba = E1000_PBA_48K; /* 48K for Rx, 16K for Tx */ 1130 } 1131 1132 INIT_DEBUGOUT1("lem_init: pba=%dK",pba); 1133 E1000_WRITE_REG(&adapter->hw, E1000_PBA, pba); 1134 1135 /* Get the latest mac address, User can use a LAA */ 1136 bcopy(IF_LLADDR(adapter->ifp), adapter->hw.mac.addr, 1137 ETHER_ADDR_LEN); 1138 1139 /* Put the address into the Receive Address Array */ 1140 e1000_rar_set(&adapter->hw, adapter->hw.mac.addr, 0); 1141 1142 /* Initialize the hardware */ 1143 if (lem_hardware_init(adapter)) { 1144 device_printf(dev, "Unable to initialize the hardware\n"); 1145 return; 1146 } 1147 lem_update_link_status(adapter); 1148 1149 /* Setup VLAN support, basic and offload if available */ 1150 E1000_WRITE_REG(&adapter->hw, E1000_VET, ETHERTYPE_VLAN); 1151 1152 /* Set hardware offload abilities */ 1153 ifp->if_hwassist = 0; 1154 if (adapter->hw.mac.type >= e1000_82543) { 1155 if (ifp->if_capenable & IFCAP_TXCSUM) 1156 ifp->if_hwassist |= (CSUM_TCP | CSUM_UDP); 1157 } 1158 1159 /* Configure for OS presence */ 1160 lem_init_manageability(adapter); 1161 1162 /* Prepare transmit descriptors and buffers */ 1163 lem_setup_transmit_structures(adapter); 1164 lem_initialize_transmit_unit(adapter); 1165 1166 /* Setup Multicast table */ 1167 lem_set_multi(adapter); 1168 1169 /* Prepare receive descriptors and buffers */ 1170 if (lem_setup_receive_structures(adapter)) { 1171 device_printf(dev, "Could not setup receive structures\n"); 1172 EM_TX_LOCK(adapter); 1173 lem_stop(adapter); 1174 EM_TX_UNLOCK(adapter); 1175 return; 1176 } 1177 lem_initialize_receive_unit(adapter); 1178 1179 /* Use real VLAN Filter support? */ 1180 if (ifp->if_capenable & IFCAP_VLAN_HWTAGGING) { 1181 if (ifp->if_capenable & IFCAP_VLAN_HWFILTER) 1182 /* Use real VLAN Filter support */ 1183 lem_setup_vlan_hw_support(adapter); 1184 else { 1185 u32 ctrl; 1186 ctrl = E1000_READ_REG(&adapter->hw, E1000_CTRL); 1187 ctrl |= E1000_CTRL_VME; 1188 E1000_WRITE_REG(&adapter->hw, E1000_CTRL, ctrl); 1189 } 1190 } 1191 1192 /* Don't lose promiscuous settings */ 1193 lem_set_promisc(adapter); 1194 1195 ifp->if_drv_flags |= IFF_DRV_RUNNING; 1196 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 1197 1198 callout_reset(&adapter->timer, hz, lem_local_timer, adapter); 1199 e1000_clear_hw_cntrs_base_generic(&adapter->hw); 1200 1201 #ifdef DEVICE_POLLING 1202 /* 1203 * Only enable interrupts if we are not polling, make sure 1204 * they are off otherwise. 1205 */ 1206 if (ifp->if_capenable & IFCAP_POLLING) 1207 lem_disable_intr(adapter); 1208 else 1209 #endif /* DEVICE_POLLING */ 1210 lem_enable_intr(adapter); 1211 1212 /* AMT based hardware can now take control from firmware */ 1213 if (adapter->has_manage && adapter->has_amt) 1214 lem_get_hw_control(adapter); 1215 } 1216 1217 static void 1218 lem_init(void *arg) 1219 { 1220 struct adapter *adapter = arg; 1221 1222 EM_CORE_LOCK(adapter); 1223 lem_init_locked(adapter); 1224 EM_CORE_UNLOCK(adapter); 1225 } 1226 1227 1228 #ifdef DEVICE_POLLING 1229 /********************************************************************* 1230 * 1231 * Legacy polling routine 1232 * 1233 *********************************************************************/ 1234 static int 1235 lem_poll(struct ifnet *ifp, enum poll_cmd cmd, int count) 1236 { 1237 struct adapter *adapter = ifp->if_softc; 1238 u32 reg_icr, rx_done = 0; 1239 1240 EM_CORE_LOCK(adapter); 1241 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) { 1242 EM_CORE_UNLOCK(adapter); 1243 return (rx_done); 1244 } 1245 1246 if (cmd == POLL_AND_CHECK_STATUS) { 1247 reg_icr = E1000_READ_REG(&adapter->hw, E1000_ICR); 1248 if (reg_icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) { 1249 callout_stop(&adapter->timer); 1250 adapter->hw.mac.get_link_status = 1; 1251 lem_update_link_status(adapter); 1252 callout_reset(&adapter->timer, hz, 1253 lem_local_timer, adapter); 1254 } 1255 } 1256 EM_CORE_UNLOCK(adapter); 1257 1258 lem_rxeof(adapter, count, &rx_done); 1259 1260 EM_TX_LOCK(adapter); 1261 lem_txeof(adapter); 1262 if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd)) 1263 lem_start_locked(ifp); 1264 EM_TX_UNLOCK(adapter); 1265 return (rx_done); 1266 } 1267 #endif /* DEVICE_POLLING */ 1268 1269 /********************************************************************* 1270 * 1271 * Legacy Interrupt Service routine 1272 * 1273 *********************************************************************/ 1274 static void 1275 lem_intr(void *arg) 1276 { 1277 struct adapter *adapter = arg; 1278 struct ifnet *ifp = adapter->ifp; 1279 u32 reg_icr; 1280 1281 1282 if ((ifp->if_capenable & IFCAP_POLLING) || 1283 ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)) 1284 return; 1285 1286 EM_CORE_LOCK(adapter); 1287 reg_icr = E1000_READ_REG(&adapter->hw, E1000_ICR); 1288 if (reg_icr & E1000_ICR_RXO) 1289 adapter->rx_overruns++; 1290 1291 if ((reg_icr == 0xffffffff) || (reg_icr == 0)) { 1292 EM_CORE_UNLOCK(adapter); 1293 return; 1294 } 1295 1296 if (reg_icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) { 1297 callout_stop(&adapter->timer); 1298 adapter->hw.mac.get_link_status = 1; 1299 lem_update_link_status(adapter); 1300 /* Deal with TX cruft when link lost */ 1301 lem_tx_purge(adapter); 1302 callout_reset(&adapter->timer, hz, 1303 lem_local_timer, adapter); 1304 EM_CORE_UNLOCK(adapter); 1305 return; 1306 } 1307 1308 EM_CORE_UNLOCK(adapter); 1309 lem_rxeof(adapter, -1, NULL); 1310 1311 EM_TX_LOCK(adapter); 1312 lem_txeof(adapter); 1313 if (ifp->if_drv_flags & IFF_DRV_RUNNING && 1314 !IFQ_DRV_IS_EMPTY(&ifp->if_snd)) 1315 lem_start_locked(ifp); 1316 EM_TX_UNLOCK(adapter); 1317 return; 1318 } 1319 1320 1321 static void 1322 lem_handle_link(void *context, int pending) 1323 { 1324 struct adapter *adapter = context; 1325 struct ifnet *ifp = adapter->ifp; 1326 1327 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) 1328 return; 1329 1330 EM_CORE_LOCK(adapter); 1331 callout_stop(&adapter->timer); 1332 lem_update_link_status(adapter); 1333 /* Deal with TX cruft when link lost */ 1334 lem_tx_purge(adapter); 1335 callout_reset(&adapter->timer, hz, lem_local_timer, adapter); 1336 EM_CORE_UNLOCK(adapter); 1337 } 1338 1339 1340 /* Combined RX/TX handler, used by Legacy and MSI */ 1341 static void 1342 lem_handle_rxtx(void *context, int pending) 1343 { 1344 struct adapter *adapter = context; 1345 struct ifnet *ifp = adapter->ifp; 1346 1347 1348 if (ifp->if_drv_flags & IFF_DRV_RUNNING) { 1349 bool more = lem_rxeof(adapter, adapter->rx_process_limit, NULL); 1350 EM_TX_LOCK(adapter); 1351 lem_txeof(adapter); 1352 if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd)) 1353 lem_start_locked(ifp); 1354 EM_TX_UNLOCK(adapter); 1355 if (more) { 1356 taskqueue_enqueue(adapter->tq, &adapter->rxtx_task); 1357 return; 1358 } 1359 } 1360 1361 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 1362 lem_enable_intr(adapter); 1363 } 1364 1365 /********************************************************************* 1366 * 1367 * Fast Legacy/MSI Combined Interrupt Service routine 1368 * 1369 *********************************************************************/ 1370 static int 1371 lem_irq_fast(void *arg) 1372 { 1373 struct adapter *adapter = arg; 1374 struct ifnet *ifp; 1375 u32 reg_icr; 1376 1377 ifp = adapter->ifp; 1378 1379 reg_icr = E1000_READ_REG(&adapter->hw, E1000_ICR); 1380 1381 /* Hot eject? */ 1382 if (reg_icr == 0xffffffff) 1383 return FILTER_STRAY; 1384 1385 /* Definitely not our interrupt. */ 1386 if (reg_icr == 0x0) 1387 return FILTER_STRAY; 1388 1389 /* 1390 * Mask interrupts until the taskqueue is finished running. This is 1391 * cheap, just assume that it is needed. This also works around the 1392 * MSI message reordering errata on certain systems. 1393 */ 1394 lem_disable_intr(adapter); 1395 taskqueue_enqueue(adapter->tq, &adapter->rxtx_task); 1396 1397 /* Link status change */ 1398 if (reg_icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) { 1399 adapter->hw.mac.get_link_status = 1; 1400 taskqueue_enqueue(taskqueue_fast, &adapter->link_task); 1401 } 1402 1403 if (reg_icr & E1000_ICR_RXO) 1404 adapter->rx_overruns++; 1405 return FILTER_HANDLED; 1406 } 1407 1408 1409 /********************************************************************* 1410 * 1411 * Media Ioctl callback 1412 * 1413 * This routine is called whenever the user queries the status of 1414 * the interface using ifconfig. 1415 * 1416 **********************************************************************/ 1417 static void 1418 lem_media_status(struct ifnet *ifp, struct ifmediareq *ifmr) 1419 { 1420 struct adapter *adapter = ifp->if_softc; 1421 u_char fiber_type = IFM_1000_SX; 1422 1423 INIT_DEBUGOUT("lem_media_status: begin"); 1424 1425 EM_CORE_LOCK(adapter); 1426 lem_update_link_status(adapter); 1427 1428 ifmr->ifm_status = IFM_AVALID; 1429 ifmr->ifm_active = IFM_ETHER; 1430 1431 if (!adapter->link_active) { 1432 EM_CORE_UNLOCK(adapter); 1433 return; 1434 } 1435 1436 ifmr->ifm_status |= IFM_ACTIVE; 1437 1438 if ((adapter->hw.phy.media_type == e1000_media_type_fiber) || 1439 (adapter->hw.phy.media_type == e1000_media_type_internal_serdes)) { 1440 if (adapter->hw.mac.type == e1000_82545) 1441 fiber_type = IFM_1000_LX; 1442 ifmr->ifm_active |= fiber_type | IFM_FDX; 1443 } else { 1444 switch (adapter->link_speed) { 1445 case 10: 1446 ifmr->ifm_active |= IFM_10_T; 1447 break; 1448 case 100: 1449 ifmr->ifm_active |= IFM_100_TX; 1450 break; 1451 case 1000: 1452 ifmr->ifm_active |= IFM_1000_T; 1453 break; 1454 } 1455 if (adapter->link_duplex == FULL_DUPLEX) 1456 ifmr->ifm_active |= IFM_FDX; 1457 else 1458 ifmr->ifm_active |= IFM_HDX; 1459 } 1460 EM_CORE_UNLOCK(adapter); 1461 } 1462 1463 /********************************************************************* 1464 * 1465 * Media Ioctl callback 1466 * 1467 * This routine is called when the user changes speed/duplex using 1468 * media/mediopt option with ifconfig. 1469 * 1470 **********************************************************************/ 1471 static int 1472 lem_media_change(struct ifnet *ifp) 1473 { 1474 struct adapter *adapter = ifp->if_softc; 1475 struct ifmedia *ifm = &adapter->media; 1476 1477 INIT_DEBUGOUT("lem_media_change: begin"); 1478 1479 if (IFM_TYPE(ifm->ifm_media) != IFM_ETHER) 1480 return (EINVAL); 1481 1482 EM_CORE_LOCK(adapter); 1483 switch (IFM_SUBTYPE(ifm->ifm_media)) { 1484 case IFM_AUTO: 1485 adapter->hw.mac.autoneg = DO_AUTO_NEG; 1486 adapter->hw.phy.autoneg_advertised = AUTONEG_ADV_DEFAULT; 1487 break; 1488 case IFM_1000_LX: 1489 case IFM_1000_SX: 1490 case IFM_1000_T: 1491 adapter->hw.mac.autoneg = DO_AUTO_NEG; 1492 adapter->hw.phy.autoneg_advertised = ADVERTISE_1000_FULL; 1493 break; 1494 case IFM_100_TX: 1495 adapter->hw.mac.autoneg = FALSE; 1496 adapter->hw.phy.autoneg_advertised = 0; 1497 if ((ifm->ifm_media & IFM_GMASK) == IFM_FDX) 1498 adapter->hw.mac.forced_speed_duplex = ADVERTISE_100_FULL; 1499 else 1500 adapter->hw.mac.forced_speed_duplex = ADVERTISE_100_HALF; 1501 break; 1502 case IFM_10_T: 1503 adapter->hw.mac.autoneg = FALSE; 1504 adapter->hw.phy.autoneg_advertised = 0; 1505 if ((ifm->ifm_media & IFM_GMASK) == IFM_FDX) 1506 adapter->hw.mac.forced_speed_duplex = ADVERTISE_10_FULL; 1507 else 1508 adapter->hw.mac.forced_speed_duplex = ADVERTISE_10_HALF; 1509 break; 1510 default: 1511 device_printf(adapter->dev, "Unsupported media type\n"); 1512 } 1513 1514 lem_init_locked(adapter); 1515 EM_CORE_UNLOCK(adapter); 1516 1517 return (0); 1518 } 1519 1520 /********************************************************************* 1521 * 1522 * This routine maps the mbufs to tx descriptors. 1523 * 1524 * return 0 on success, positive on failure 1525 **********************************************************************/ 1526 1527 static int 1528 lem_xmit(struct adapter *adapter, struct mbuf **m_headp) 1529 { 1530 bus_dma_segment_t segs[EM_MAX_SCATTER]; 1531 bus_dmamap_t map; 1532 struct em_buffer *tx_buffer, *tx_buffer_mapped; 1533 struct e1000_tx_desc *ctxd = NULL; 1534 struct mbuf *m_head; 1535 u32 txd_upper, txd_lower, txd_used, txd_saved; 1536 int error, nsegs, i, j, first, last = 0; 1537 1538 m_head = *m_headp; 1539 txd_upper = txd_lower = txd_used = txd_saved = 0; 1540 1541 /* 1542 ** When doing checksum offload, it is critical to 1543 ** make sure the first mbuf has more than header, 1544 ** because that routine expects data to be present. 1545 */ 1546 if ((m_head->m_pkthdr.csum_flags & CSUM_OFFLOAD) && 1547 (m_head->m_len < ETHER_HDR_LEN + sizeof(struct ip))) { 1548 m_head = m_pullup(m_head, ETHER_HDR_LEN + sizeof(struct ip)); 1549 *m_headp = m_head; 1550 if (m_head == NULL) 1551 return (ENOBUFS); 1552 } 1553 1554 /* 1555 * Map the packet for DMA 1556 * 1557 * Capture the first descriptor index, 1558 * this descriptor will have the index 1559 * of the EOP which is the only one that 1560 * now gets a DONE bit writeback. 1561 */ 1562 first = adapter->next_avail_tx_desc; 1563 tx_buffer = &adapter->tx_buffer_area[first]; 1564 tx_buffer_mapped = tx_buffer; 1565 map = tx_buffer->map; 1566 1567 error = bus_dmamap_load_mbuf_sg(adapter->txtag, map, 1568 *m_headp, segs, &nsegs, BUS_DMA_NOWAIT); 1569 1570 /* 1571 * There are two types of errors we can (try) to handle: 1572 * - EFBIG means the mbuf chain was too long and bus_dma ran 1573 * out of segments. Defragment the mbuf chain and try again. 1574 * - ENOMEM means bus_dma could not obtain enough bounce buffers 1575 * at this point in time. Defer sending and try again later. 1576 * All other errors, in particular EINVAL, are fatal and prevent the 1577 * mbuf chain from ever going through. Drop it and report error. 1578 */ 1579 if (error == EFBIG) { 1580 struct mbuf *m; 1581 1582 m = m_defrag(*m_headp, M_NOWAIT); 1583 if (m == NULL) { 1584 adapter->mbuf_alloc_failed++; 1585 m_freem(*m_headp); 1586 *m_headp = NULL; 1587 return (ENOBUFS); 1588 } 1589 *m_headp = m; 1590 1591 /* Try it again */ 1592 error = bus_dmamap_load_mbuf_sg(adapter->txtag, map, 1593 *m_headp, segs, &nsegs, BUS_DMA_NOWAIT); 1594 1595 if (error) { 1596 adapter->no_tx_dma_setup++; 1597 m_freem(*m_headp); 1598 *m_headp = NULL; 1599 return (error); 1600 } 1601 } else if (error != 0) { 1602 adapter->no_tx_dma_setup++; 1603 return (error); 1604 } 1605 1606 if (nsegs > (adapter->num_tx_desc_avail - 2)) { 1607 adapter->no_tx_desc_avail2++; 1608 bus_dmamap_unload(adapter->txtag, map); 1609 return (ENOBUFS); 1610 } 1611 m_head = *m_headp; 1612 1613 /* Do hardware assists */ 1614 if (m_head->m_pkthdr.csum_flags & CSUM_OFFLOAD) 1615 lem_transmit_checksum_setup(adapter, m_head, 1616 &txd_upper, &txd_lower); 1617 1618 i = adapter->next_avail_tx_desc; 1619 if (adapter->pcix_82544) 1620 txd_saved = i; 1621 1622 /* Set up our transmit descriptors */ 1623 for (j = 0; j < nsegs; j++) { 1624 bus_size_t seg_len; 1625 bus_addr_t seg_addr; 1626 /* If adapter is 82544 and on PCIX bus */ 1627 if(adapter->pcix_82544) { 1628 DESC_ARRAY desc_array; 1629 u32 array_elements, counter; 1630 /* 1631 * Check the Address and Length combination and 1632 * split the data accordingly 1633 */ 1634 array_elements = lem_fill_descriptors(segs[j].ds_addr, 1635 segs[j].ds_len, &desc_array); 1636 for (counter = 0; counter < array_elements; counter++) { 1637 if (txd_used == adapter->num_tx_desc_avail) { 1638 adapter->next_avail_tx_desc = txd_saved; 1639 adapter->no_tx_desc_avail2++; 1640 bus_dmamap_unload(adapter->txtag, map); 1641 return (ENOBUFS); 1642 } 1643 tx_buffer = &adapter->tx_buffer_area[i]; 1644 ctxd = &adapter->tx_desc_base[i]; 1645 ctxd->buffer_addr = htole64( 1646 desc_array.descriptor[counter].address); 1647 ctxd->lower.data = htole32( 1648 (adapter->txd_cmd | txd_lower | (u16) 1649 desc_array.descriptor[counter].length)); 1650 ctxd->upper.data = 1651 htole32((txd_upper)); 1652 last = i; 1653 if (++i == adapter->num_tx_desc) 1654 i = 0; 1655 tx_buffer->m_head = NULL; 1656 tx_buffer->next_eop = -1; 1657 txd_used++; 1658 } 1659 } else { 1660 tx_buffer = &adapter->tx_buffer_area[i]; 1661 ctxd = &adapter->tx_desc_base[i]; 1662 seg_addr = segs[j].ds_addr; 1663 seg_len = segs[j].ds_len; 1664 ctxd->buffer_addr = htole64(seg_addr); 1665 ctxd->lower.data = htole32( 1666 adapter->txd_cmd | txd_lower | seg_len); 1667 ctxd->upper.data = 1668 htole32(txd_upper); 1669 last = i; 1670 if (++i == adapter->num_tx_desc) 1671 i = 0; 1672 tx_buffer->m_head = NULL; 1673 tx_buffer->next_eop = -1; 1674 } 1675 } 1676 1677 adapter->next_avail_tx_desc = i; 1678 1679 if (adapter->pcix_82544) 1680 adapter->num_tx_desc_avail -= txd_used; 1681 else 1682 adapter->num_tx_desc_avail -= nsegs; 1683 1684 if (m_head->m_flags & M_VLANTAG) { 1685 /* Set the vlan id. */ 1686 ctxd->upper.fields.special = 1687 htole16(m_head->m_pkthdr.ether_vtag); 1688 /* Tell hardware to add tag */ 1689 ctxd->lower.data |= htole32(E1000_TXD_CMD_VLE); 1690 } 1691 1692 tx_buffer->m_head = m_head; 1693 tx_buffer_mapped->map = tx_buffer->map; 1694 tx_buffer->map = map; 1695 bus_dmamap_sync(adapter->txtag, map, BUS_DMASYNC_PREWRITE); 1696 1697 /* 1698 * Last Descriptor of Packet 1699 * needs End Of Packet (EOP) 1700 * and Report Status (RS) 1701 */ 1702 ctxd->lower.data |= 1703 htole32(E1000_TXD_CMD_EOP | E1000_TXD_CMD_RS); 1704 /* 1705 * Keep track in the first buffer which 1706 * descriptor will be written back 1707 */ 1708 tx_buffer = &adapter->tx_buffer_area[first]; 1709 tx_buffer->next_eop = last; 1710 adapter->watchdog_time = ticks; 1711 1712 /* 1713 * Advance the Transmit Descriptor Tail (TDT), this tells the E1000 1714 * that this frame is available to transmit. 1715 */ 1716 bus_dmamap_sync(adapter->txdma.dma_tag, adapter->txdma.dma_map, 1717 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1718 if (adapter->hw.mac.type == e1000_82547 && 1719 adapter->link_duplex == HALF_DUPLEX) 1720 lem_82547_move_tail(adapter); 1721 else { 1722 E1000_WRITE_REG(&adapter->hw, E1000_TDT(0), i); 1723 if (adapter->hw.mac.type == e1000_82547) 1724 lem_82547_update_fifo_head(adapter, 1725 m_head->m_pkthdr.len); 1726 } 1727 1728 return (0); 1729 } 1730 1731 /********************************************************************* 1732 * 1733 * 82547 workaround to avoid controller hang in half-duplex environment. 1734 * The workaround is to avoid queuing a large packet that would span 1735 * the internal Tx FIFO ring boundary. We need to reset the FIFO pointers 1736 * in this case. We do that only when FIFO is quiescent. 1737 * 1738 **********************************************************************/ 1739 static void 1740 lem_82547_move_tail(void *arg) 1741 { 1742 struct adapter *adapter = arg; 1743 struct e1000_tx_desc *tx_desc; 1744 u16 hw_tdt, sw_tdt, length = 0; 1745 bool eop = 0; 1746 1747 EM_TX_LOCK_ASSERT(adapter); 1748 1749 hw_tdt = E1000_READ_REG(&adapter->hw, E1000_TDT(0)); 1750 sw_tdt = adapter->next_avail_tx_desc; 1751 1752 while (hw_tdt != sw_tdt) { 1753 tx_desc = &adapter->tx_desc_base[hw_tdt]; 1754 length += tx_desc->lower.flags.length; 1755 eop = tx_desc->lower.data & E1000_TXD_CMD_EOP; 1756 if (++hw_tdt == adapter->num_tx_desc) 1757 hw_tdt = 0; 1758 1759 if (eop) { 1760 if (lem_82547_fifo_workaround(adapter, length)) { 1761 adapter->tx_fifo_wrk_cnt++; 1762 callout_reset(&adapter->tx_fifo_timer, 1, 1763 lem_82547_move_tail, adapter); 1764 break; 1765 } 1766 E1000_WRITE_REG(&adapter->hw, E1000_TDT(0), hw_tdt); 1767 lem_82547_update_fifo_head(adapter, length); 1768 length = 0; 1769 } 1770 } 1771 } 1772 1773 static int 1774 lem_82547_fifo_workaround(struct adapter *adapter, int len) 1775 { 1776 int fifo_space, fifo_pkt_len; 1777 1778 fifo_pkt_len = roundup2(len + EM_FIFO_HDR, EM_FIFO_HDR); 1779 1780 if (adapter->link_duplex == HALF_DUPLEX) { 1781 fifo_space = adapter->tx_fifo_size - adapter->tx_fifo_head; 1782 1783 if (fifo_pkt_len >= (EM_82547_PKT_THRESH + fifo_space)) { 1784 if (lem_82547_tx_fifo_reset(adapter)) 1785 return (0); 1786 else 1787 return (1); 1788 } 1789 } 1790 1791 return (0); 1792 } 1793 1794 static void 1795 lem_82547_update_fifo_head(struct adapter *adapter, int len) 1796 { 1797 int fifo_pkt_len = roundup2(len + EM_FIFO_HDR, EM_FIFO_HDR); 1798 1799 /* tx_fifo_head is always 16 byte aligned */ 1800 adapter->tx_fifo_head += fifo_pkt_len; 1801 if (adapter->tx_fifo_head >= adapter->tx_fifo_size) { 1802 adapter->tx_fifo_head -= adapter->tx_fifo_size; 1803 } 1804 } 1805 1806 1807 static int 1808 lem_82547_tx_fifo_reset(struct adapter *adapter) 1809 { 1810 u32 tctl; 1811 1812 if ((E1000_READ_REG(&adapter->hw, E1000_TDT(0)) == 1813 E1000_READ_REG(&adapter->hw, E1000_TDH(0))) && 1814 (E1000_READ_REG(&adapter->hw, E1000_TDFT) == 1815 E1000_READ_REG(&adapter->hw, E1000_TDFH)) && 1816 (E1000_READ_REG(&adapter->hw, E1000_TDFTS) == 1817 E1000_READ_REG(&adapter->hw, E1000_TDFHS)) && 1818 (E1000_READ_REG(&adapter->hw, E1000_TDFPC) == 0)) { 1819 /* Disable TX unit */ 1820 tctl = E1000_READ_REG(&adapter->hw, E1000_TCTL); 1821 E1000_WRITE_REG(&adapter->hw, E1000_TCTL, 1822 tctl & ~E1000_TCTL_EN); 1823 1824 /* Reset FIFO pointers */ 1825 E1000_WRITE_REG(&adapter->hw, E1000_TDFT, 1826 adapter->tx_head_addr); 1827 E1000_WRITE_REG(&adapter->hw, E1000_TDFH, 1828 adapter->tx_head_addr); 1829 E1000_WRITE_REG(&adapter->hw, E1000_TDFTS, 1830 adapter->tx_head_addr); 1831 E1000_WRITE_REG(&adapter->hw, E1000_TDFHS, 1832 adapter->tx_head_addr); 1833 1834 /* Re-enable TX unit */ 1835 E1000_WRITE_REG(&adapter->hw, E1000_TCTL, tctl); 1836 E1000_WRITE_FLUSH(&adapter->hw); 1837 1838 adapter->tx_fifo_head = 0; 1839 adapter->tx_fifo_reset_cnt++; 1840 1841 return (TRUE); 1842 } 1843 else { 1844 return (FALSE); 1845 } 1846 } 1847 1848 static void 1849 lem_set_promisc(struct adapter *adapter) 1850 { 1851 struct ifnet *ifp = adapter->ifp; 1852 u32 reg_rctl; 1853 1854 reg_rctl = E1000_READ_REG(&adapter->hw, E1000_RCTL); 1855 1856 if (ifp->if_flags & IFF_PROMISC) { 1857 reg_rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE); 1858 /* Turn this on if you want to see bad packets */ 1859 if (lem_debug_sbp) 1860 reg_rctl |= E1000_RCTL_SBP; 1861 E1000_WRITE_REG(&adapter->hw, E1000_RCTL, reg_rctl); 1862 } else if (ifp->if_flags & IFF_ALLMULTI) { 1863 reg_rctl |= E1000_RCTL_MPE; 1864 reg_rctl &= ~E1000_RCTL_UPE; 1865 E1000_WRITE_REG(&adapter->hw, E1000_RCTL, reg_rctl); 1866 } 1867 } 1868 1869 static void 1870 lem_disable_promisc(struct adapter *adapter) 1871 { 1872 struct ifnet *ifp = adapter->ifp; 1873 u32 reg_rctl; 1874 int mcnt = 0; 1875 1876 reg_rctl = E1000_READ_REG(&adapter->hw, E1000_RCTL); 1877 reg_rctl &= (~E1000_RCTL_UPE); 1878 if (ifp->if_flags & IFF_ALLMULTI) 1879 mcnt = MAX_NUM_MULTICAST_ADDRESSES; 1880 else { 1881 struct ifmultiaddr *ifma; 1882 #if __FreeBSD_version < 800000 1883 IF_ADDR_LOCK(ifp); 1884 #else 1885 if_maddr_rlock(ifp); 1886 #endif 1887 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) { 1888 if (ifma->ifma_addr->sa_family != AF_LINK) 1889 continue; 1890 if (mcnt == MAX_NUM_MULTICAST_ADDRESSES) 1891 break; 1892 mcnt++; 1893 } 1894 #if __FreeBSD_version < 800000 1895 IF_ADDR_UNLOCK(ifp); 1896 #else 1897 if_maddr_runlock(ifp); 1898 #endif 1899 } 1900 /* Don't disable if in MAX groups */ 1901 if (mcnt < MAX_NUM_MULTICAST_ADDRESSES) 1902 reg_rctl &= (~E1000_RCTL_MPE); 1903 reg_rctl &= (~E1000_RCTL_SBP); 1904 E1000_WRITE_REG(&adapter->hw, E1000_RCTL, reg_rctl); 1905 } 1906 1907 1908 /********************************************************************* 1909 * Multicast Update 1910 * 1911 * This routine is called whenever multicast address list is updated. 1912 * 1913 **********************************************************************/ 1914 1915 static void 1916 lem_set_multi(struct adapter *adapter) 1917 { 1918 struct ifnet *ifp = adapter->ifp; 1919 struct ifmultiaddr *ifma; 1920 u32 reg_rctl = 0; 1921 u8 *mta; /* Multicast array memory */ 1922 int mcnt = 0; 1923 1924 IOCTL_DEBUGOUT("lem_set_multi: begin"); 1925 1926 mta = adapter->mta; 1927 bzero(mta, sizeof(u8) * ETH_ADDR_LEN * MAX_NUM_MULTICAST_ADDRESSES); 1928 1929 if (adapter->hw.mac.type == e1000_82542 && 1930 adapter->hw.revision_id == E1000_REVISION_2) { 1931 reg_rctl = E1000_READ_REG(&adapter->hw, E1000_RCTL); 1932 if (adapter->hw.bus.pci_cmd_word & CMD_MEM_WRT_INVALIDATE) 1933 e1000_pci_clear_mwi(&adapter->hw); 1934 reg_rctl |= E1000_RCTL_RST; 1935 E1000_WRITE_REG(&adapter->hw, E1000_RCTL, reg_rctl); 1936 msec_delay(5); 1937 } 1938 1939 #if __FreeBSD_version < 800000 1940 IF_ADDR_LOCK(ifp); 1941 #else 1942 if_maddr_rlock(ifp); 1943 #endif 1944 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) { 1945 if (ifma->ifma_addr->sa_family != AF_LINK) 1946 continue; 1947 1948 if (mcnt == MAX_NUM_MULTICAST_ADDRESSES) 1949 break; 1950 1951 bcopy(LLADDR((struct sockaddr_dl *)ifma->ifma_addr), 1952 &mta[mcnt * ETH_ADDR_LEN], ETH_ADDR_LEN); 1953 mcnt++; 1954 } 1955 #if __FreeBSD_version < 800000 1956 IF_ADDR_UNLOCK(ifp); 1957 #else 1958 if_maddr_runlock(ifp); 1959 #endif 1960 if (mcnt >= MAX_NUM_MULTICAST_ADDRESSES) { 1961 reg_rctl = E1000_READ_REG(&adapter->hw, E1000_RCTL); 1962 reg_rctl |= E1000_RCTL_MPE; 1963 E1000_WRITE_REG(&adapter->hw, E1000_RCTL, reg_rctl); 1964 } else 1965 e1000_update_mc_addr_list(&adapter->hw, mta, mcnt); 1966 1967 if (adapter->hw.mac.type == e1000_82542 && 1968 adapter->hw.revision_id == E1000_REVISION_2) { 1969 reg_rctl = E1000_READ_REG(&adapter->hw, E1000_RCTL); 1970 reg_rctl &= ~E1000_RCTL_RST; 1971 E1000_WRITE_REG(&adapter->hw, E1000_RCTL, reg_rctl); 1972 msec_delay(5); 1973 if (adapter->hw.bus.pci_cmd_word & CMD_MEM_WRT_INVALIDATE) 1974 e1000_pci_set_mwi(&adapter->hw); 1975 } 1976 } 1977 1978 1979 /********************************************************************* 1980 * Timer routine 1981 * 1982 * This routine checks for link status and updates statistics. 1983 * 1984 **********************************************************************/ 1985 1986 static void 1987 lem_local_timer(void *arg) 1988 { 1989 struct adapter *adapter = arg; 1990 1991 EM_CORE_LOCK_ASSERT(adapter); 1992 1993 lem_update_link_status(adapter); 1994 lem_update_stats_counters(adapter); 1995 1996 lem_smartspeed(adapter); 1997 1998 /* 1999 * We check the watchdog: the time since 2000 * the last TX descriptor was cleaned. 2001 * This implies a functional TX engine. 2002 */ 2003 if ((adapter->watchdog_check == TRUE) && 2004 (ticks - adapter->watchdog_time > EM_WATCHDOG)) 2005 goto hung; 2006 2007 callout_reset(&adapter->timer, hz, lem_local_timer, adapter); 2008 return; 2009 hung: 2010 device_printf(adapter->dev, "Watchdog timeout -- resetting\n"); 2011 adapter->ifp->if_drv_flags &= ~IFF_DRV_RUNNING; 2012 adapter->watchdog_events++; 2013 lem_init_locked(adapter); 2014 } 2015 2016 static void 2017 lem_update_link_status(struct adapter *adapter) 2018 { 2019 struct e1000_hw *hw = &adapter->hw; 2020 struct ifnet *ifp = adapter->ifp; 2021 device_t dev = adapter->dev; 2022 u32 link_check = 0; 2023 2024 /* Get the cached link value or read phy for real */ 2025 switch (hw->phy.media_type) { 2026 case e1000_media_type_copper: 2027 if (hw->mac.get_link_status) { 2028 /* Do the work to read phy */ 2029 e1000_check_for_link(hw); 2030 link_check = !hw->mac.get_link_status; 2031 if (link_check) /* ESB2 fix */ 2032 e1000_cfg_on_link_up(hw); 2033 } else 2034 link_check = TRUE; 2035 break; 2036 case e1000_media_type_fiber: 2037 e1000_check_for_link(hw); 2038 link_check = (E1000_READ_REG(hw, E1000_STATUS) & 2039 E1000_STATUS_LU); 2040 break; 2041 case e1000_media_type_internal_serdes: 2042 e1000_check_for_link(hw); 2043 link_check = adapter->hw.mac.serdes_has_link; 2044 break; 2045 default: 2046 case e1000_media_type_unknown: 2047 break; 2048 } 2049 2050 /* Now check for a transition */ 2051 if (link_check && (adapter->link_active == 0)) { 2052 e1000_get_speed_and_duplex(hw, &adapter->link_speed, 2053 &adapter->link_duplex); 2054 if (bootverbose) 2055 device_printf(dev, "Link is up %d Mbps %s\n", 2056 adapter->link_speed, 2057 ((adapter->link_duplex == FULL_DUPLEX) ? 2058 "Full Duplex" : "Half Duplex")); 2059 adapter->link_active = 1; 2060 adapter->smartspeed = 0; 2061 ifp->if_baudrate = adapter->link_speed * 1000000; 2062 if_link_state_change(ifp, LINK_STATE_UP); 2063 } else if (!link_check && (adapter->link_active == 1)) { 2064 ifp->if_baudrate = adapter->link_speed = 0; 2065 adapter->link_duplex = 0; 2066 if (bootverbose) 2067 device_printf(dev, "Link is Down\n"); 2068 adapter->link_active = 0; 2069 /* Link down, disable watchdog */ 2070 adapter->watchdog_check = FALSE; 2071 if_link_state_change(ifp, LINK_STATE_DOWN); 2072 } 2073 } 2074 2075 /********************************************************************* 2076 * 2077 * This routine disables all traffic on the adapter by issuing a 2078 * global reset on the MAC and deallocates TX/RX buffers. 2079 * 2080 * This routine should always be called with BOTH the CORE 2081 * and TX locks. 2082 **********************************************************************/ 2083 2084 static void 2085 lem_stop(void *arg) 2086 { 2087 struct adapter *adapter = arg; 2088 struct ifnet *ifp = adapter->ifp; 2089 2090 EM_CORE_LOCK_ASSERT(adapter); 2091 EM_TX_LOCK_ASSERT(adapter); 2092 2093 INIT_DEBUGOUT("lem_stop: begin"); 2094 2095 lem_disable_intr(adapter); 2096 callout_stop(&adapter->timer); 2097 callout_stop(&adapter->tx_fifo_timer); 2098 2099 /* Tell the stack that the interface is no longer active */ 2100 ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE); 2101 2102 e1000_reset_hw(&adapter->hw); 2103 if (adapter->hw.mac.type >= e1000_82544) 2104 E1000_WRITE_REG(&adapter->hw, E1000_WUC, 0); 2105 2106 e1000_led_off(&adapter->hw); 2107 e1000_cleanup_led(&adapter->hw); 2108 } 2109 2110 2111 /********************************************************************* 2112 * 2113 * Determine hardware revision. 2114 * 2115 **********************************************************************/ 2116 static void 2117 lem_identify_hardware(struct adapter *adapter) 2118 { 2119 device_t dev = adapter->dev; 2120 2121 /* Make sure our PCI config space has the necessary stuff set */ 2122 pci_enable_busmaster(dev); 2123 adapter->hw.bus.pci_cmd_word = pci_read_config(dev, PCIR_COMMAND, 2); 2124 2125 /* Save off the information about this board */ 2126 adapter->hw.vendor_id = pci_get_vendor(dev); 2127 adapter->hw.device_id = pci_get_device(dev); 2128 adapter->hw.revision_id = pci_read_config(dev, PCIR_REVID, 1); 2129 adapter->hw.subsystem_vendor_id = 2130 pci_read_config(dev, PCIR_SUBVEND_0, 2); 2131 adapter->hw.subsystem_device_id = 2132 pci_read_config(dev, PCIR_SUBDEV_0, 2); 2133 2134 /* Do Shared Code Init and Setup */ 2135 if (e1000_set_mac_type(&adapter->hw)) { 2136 device_printf(dev, "Setup init failure\n"); 2137 return; 2138 } 2139 } 2140 2141 static int 2142 lem_allocate_pci_resources(struct adapter *adapter) 2143 { 2144 device_t dev = adapter->dev; 2145 int val, rid, error = E1000_SUCCESS; 2146 2147 rid = PCIR_BAR(0); 2148 adapter->memory = bus_alloc_resource_any(dev, SYS_RES_MEMORY, 2149 &rid, RF_ACTIVE); 2150 if (adapter->memory == NULL) { 2151 device_printf(dev, "Unable to allocate bus resource: memory\n"); 2152 return (ENXIO); 2153 } 2154 adapter->osdep.mem_bus_space_tag = 2155 rman_get_bustag(adapter->memory); 2156 adapter->osdep.mem_bus_space_handle = 2157 rman_get_bushandle(adapter->memory); 2158 adapter->hw.hw_addr = (u8 *)&adapter->osdep.mem_bus_space_handle; 2159 2160 /* Only older adapters use IO mapping */ 2161 if (adapter->hw.mac.type > e1000_82543) { 2162 /* Figure our where our IO BAR is ? */ 2163 for (rid = PCIR_BAR(0); rid < PCIR_CIS;) { 2164 val = pci_read_config(dev, rid, 4); 2165 if (EM_BAR_TYPE(val) == EM_BAR_TYPE_IO) { 2166 adapter->io_rid = rid; 2167 break; 2168 } 2169 rid += 4; 2170 /* check for 64bit BAR */ 2171 if (EM_BAR_MEM_TYPE(val) == EM_BAR_MEM_TYPE_64BIT) 2172 rid += 4; 2173 } 2174 if (rid >= PCIR_CIS) { 2175 device_printf(dev, "Unable to locate IO BAR\n"); 2176 return (ENXIO); 2177 } 2178 adapter->ioport = bus_alloc_resource_any(dev, 2179 SYS_RES_IOPORT, &adapter->io_rid, RF_ACTIVE); 2180 if (adapter->ioport == NULL) { 2181 device_printf(dev, "Unable to allocate bus resource: " 2182 "ioport\n"); 2183 return (ENXIO); 2184 } 2185 adapter->hw.io_base = 0; 2186 adapter->osdep.io_bus_space_tag = 2187 rman_get_bustag(adapter->ioport); 2188 adapter->osdep.io_bus_space_handle = 2189 rman_get_bushandle(adapter->ioport); 2190 } 2191 2192 adapter->hw.back = &adapter->osdep; 2193 2194 return (error); 2195 } 2196 2197 /********************************************************************* 2198 * 2199 * Setup the Legacy or MSI Interrupt handler 2200 * 2201 **********************************************************************/ 2202 int 2203 lem_allocate_irq(struct adapter *adapter) 2204 { 2205 device_t dev = adapter->dev; 2206 int error, rid = 0; 2207 2208 /* Manually turn off all interrupts */ 2209 E1000_WRITE_REG(&adapter->hw, E1000_IMC, 0xffffffff); 2210 2211 /* We allocate a single interrupt resource */ 2212 adapter->res[0] = bus_alloc_resource_any(dev, 2213 SYS_RES_IRQ, &rid, RF_SHAREABLE | RF_ACTIVE); 2214 if (adapter->res[0] == NULL) { 2215 device_printf(dev, "Unable to allocate bus resource: " 2216 "interrupt\n"); 2217 return (ENXIO); 2218 } 2219 2220 /* Do Legacy setup? */ 2221 if (lem_use_legacy_irq) { 2222 if ((error = bus_setup_intr(dev, adapter->res[0], 2223 INTR_TYPE_NET | INTR_MPSAFE, NULL, lem_intr, adapter, 2224 &adapter->tag[0])) != 0) { 2225 device_printf(dev, 2226 "Failed to register interrupt handler"); 2227 return (error); 2228 } 2229 return (0); 2230 } 2231 2232 /* 2233 * Use a Fast interrupt and the associated 2234 * deferred processing contexts. 2235 */ 2236 TASK_INIT(&adapter->rxtx_task, 0, lem_handle_rxtx, adapter); 2237 TASK_INIT(&adapter->link_task, 0, lem_handle_link, adapter); 2238 adapter->tq = taskqueue_create_fast("lem_taskq", M_NOWAIT, 2239 taskqueue_thread_enqueue, &adapter->tq); 2240 taskqueue_start_threads(&adapter->tq, 1, PI_NET, "%s taskq", 2241 device_get_nameunit(adapter->dev)); 2242 if ((error = bus_setup_intr(dev, adapter->res[0], 2243 INTR_TYPE_NET, lem_irq_fast, NULL, adapter, 2244 &adapter->tag[0])) != 0) { 2245 device_printf(dev, "Failed to register fast interrupt " 2246 "handler: %d\n", error); 2247 taskqueue_free(adapter->tq); 2248 adapter->tq = NULL; 2249 return (error); 2250 } 2251 2252 return (0); 2253 } 2254 2255 2256 static void 2257 lem_free_pci_resources(struct adapter *adapter) 2258 { 2259 device_t dev = adapter->dev; 2260 2261 2262 if (adapter->tag[0] != NULL) { 2263 bus_teardown_intr(dev, adapter->res[0], 2264 adapter->tag[0]); 2265 adapter->tag[0] = NULL; 2266 } 2267 2268 if (adapter->res[0] != NULL) { 2269 bus_release_resource(dev, SYS_RES_IRQ, 2270 0, adapter->res[0]); 2271 } 2272 2273 if (adapter->memory != NULL) 2274 bus_release_resource(dev, SYS_RES_MEMORY, 2275 PCIR_BAR(0), adapter->memory); 2276 2277 if (adapter->ioport != NULL) 2278 bus_release_resource(dev, SYS_RES_IOPORT, 2279 adapter->io_rid, adapter->ioport); 2280 } 2281 2282 2283 /********************************************************************* 2284 * 2285 * Initialize the hardware to a configuration 2286 * as specified by the adapter structure. 2287 * 2288 **********************************************************************/ 2289 static int 2290 lem_hardware_init(struct adapter *adapter) 2291 { 2292 device_t dev = adapter->dev; 2293 u16 rx_buffer_size; 2294 2295 INIT_DEBUGOUT("lem_hardware_init: begin"); 2296 2297 /* Issue a global reset */ 2298 e1000_reset_hw(&adapter->hw); 2299 2300 /* When hardware is reset, fifo_head is also reset */ 2301 adapter->tx_fifo_head = 0; 2302 2303 /* 2304 * These parameters control the automatic generation (Tx) and 2305 * response (Rx) to Ethernet PAUSE frames. 2306 * - High water mark should allow for at least two frames to be 2307 * received after sending an XOFF. 2308 * - Low water mark works best when it is very near the high water mark. 2309 * This allows the receiver to restart by sending XON when it has 2310 * drained a bit. Here we use an arbitary value of 1500 which will 2311 * restart after one full frame is pulled from the buffer. There 2312 * could be several smaller frames in the buffer and if so they will 2313 * not trigger the XON until their total number reduces the buffer 2314 * by 1500. 2315 * - The pause time is fairly large at 1000 x 512ns = 512 usec. 2316 */ 2317 rx_buffer_size = ((E1000_READ_REG(&adapter->hw, E1000_PBA) & 2318 0xffff) << 10 ); 2319 2320 adapter->hw.fc.high_water = rx_buffer_size - 2321 roundup2(adapter->max_frame_size, 1024); 2322 adapter->hw.fc.low_water = adapter->hw.fc.high_water - 1500; 2323 2324 adapter->hw.fc.pause_time = EM_FC_PAUSE_TIME; 2325 adapter->hw.fc.send_xon = TRUE; 2326 2327 /* Set Flow control, use the tunable location if sane */ 2328 if ((lem_fc_setting >= 0) && (lem_fc_setting < 4)) 2329 adapter->hw.fc.requested_mode = lem_fc_setting; 2330 else 2331 adapter->hw.fc.requested_mode = e1000_fc_none; 2332 2333 if (e1000_init_hw(&adapter->hw) < 0) { 2334 device_printf(dev, "Hardware Initialization Failed\n"); 2335 return (EIO); 2336 } 2337 2338 e1000_check_for_link(&adapter->hw); 2339 2340 return (0); 2341 } 2342 2343 /********************************************************************* 2344 * 2345 * Setup networking device structure and register an interface. 2346 * 2347 **********************************************************************/ 2348 static int 2349 lem_setup_interface(device_t dev, struct adapter *adapter) 2350 { 2351 struct ifnet *ifp; 2352 2353 INIT_DEBUGOUT("lem_setup_interface: begin"); 2354 2355 ifp = adapter->ifp = if_alloc(IFT_ETHER); 2356 if (ifp == NULL) { 2357 device_printf(dev, "can not allocate ifnet structure\n"); 2358 return (-1); 2359 } 2360 if_initname(ifp, device_get_name(dev), device_get_unit(dev)); 2361 ifp->if_init = lem_init; 2362 ifp->if_softc = adapter; 2363 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 2364 ifp->if_ioctl = lem_ioctl; 2365 ifp->if_start = lem_start; 2366 IFQ_SET_MAXLEN(&ifp->if_snd, adapter->num_tx_desc - 1); 2367 ifp->if_snd.ifq_drv_maxlen = adapter->num_tx_desc - 1; 2368 IFQ_SET_READY(&ifp->if_snd); 2369 2370 ether_ifattach(ifp, adapter->hw.mac.addr); 2371 2372 ifp->if_capabilities = ifp->if_capenable = 0; 2373 2374 if (adapter->hw.mac.type >= e1000_82543) { 2375 ifp->if_capabilities |= IFCAP_HWCSUM | IFCAP_VLAN_HWCSUM; 2376 ifp->if_capenable |= IFCAP_HWCSUM | IFCAP_VLAN_HWCSUM; 2377 } 2378 2379 /* 2380 * Tell the upper layer(s) we support long frames. 2381 */ 2382 ifp->if_data.ifi_hdrlen = sizeof(struct ether_vlan_header); 2383 ifp->if_capabilities |= IFCAP_VLAN_HWTAGGING | IFCAP_VLAN_MTU; 2384 ifp->if_capenable |= IFCAP_VLAN_HWTAGGING | IFCAP_VLAN_MTU; 2385 2386 /* 2387 ** Dont turn this on by default, if vlans are 2388 ** created on another pseudo device (eg. lagg) 2389 ** then vlan events are not passed thru, breaking 2390 ** operation, but with HW FILTER off it works. If 2391 ** using vlans directly on the em driver you can 2392 ** enable this and get full hardware tag filtering. 2393 */ 2394 ifp->if_capabilities |= IFCAP_VLAN_HWFILTER; 2395 2396 #ifdef DEVICE_POLLING 2397 ifp->if_capabilities |= IFCAP_POLLING; 2398 #endif 2399 2400 /* Enable only WOL MAGIC by default */ 2401 if (adapter->wol) { 2402 ifp->if_capabilities |= IFCAP_WOL; 2403 ifp->if_capenable |= IFCAP_WOL_MAGIC; 2404 } 2405 2406 /* 2407 * Specify the media types supported by this adapter and register 2408 * callbacks to update media and link information 2409 */ 2410 ifmedia_init(&adapter->media, IFM_IMASK, 2411 lem_media_change, lem_media_status); 2412 if ((adapter->hw.phy.media_type == e1000_media_type_fiber) || 2413 (adapter->hw.phy.media_type == e1000_media_type_internal_serdes)) { 2414 u_char fiber_type = IFM_1000_SX; /* default type */ 2415 2416 if (adapter->hw.mac.type == e1000_82545) 2417 fiber_type = IFM_1000_LX; 2418 ifmedia_add(&adapter->media, IFM_ETHER | fiber_type | IFM_FDX, 2419 0, NULL); 2420 ifmedia_add(&adapter->media, IFM_ETHER | fiber_type, 0, NULL); 2421 } else { 2422 ifmedia_add(&adapter->media, IFM_ETHER | IFM_10_T, 0, NULL); 2423 ifmedia_add(&adapter->media, IFM_ETHER | IFM_10_T | IFM_FDX, 2424 0, NULL); 2425 ifmedia_add(&adapter->media, IFM_ETHER | IFM_100_TX, 2426 0, NULL); 2427 ifmedia_add(&adapter->media, IFM_ETHER | IFM_100_TX | IFM_FDX, 2428 0, NULL); 2429 if (adapter->hw.phy.type != e1000_phy_ife) { 2430 ifmedia_add(&adapter->media, 2431 IFM_ETHER | IFM_1000_T | IFM_FDX, 0, NULL); 2432 ifmedia_add(&adapter->media, 2433 IFM_ETHER | IFM_1000_T, 0, NULL); 2434 } 2435 } 2436 ifmedia_add(&adapter->media, IFM_ETHER | IFM_AUTO, 0, NULL); 2437 ifmedia_set(&adapter->media, IFM_ETHER | IFM_AUTO); 2438 return (0); 2439 } 2440 2441 2442 /********************************************************************* 2443 * 2444 * Workaround for SmartSpeed on 82541 and 82547 controllers 2445 * 2446 **********************************************************************/ 2447 static void 2448 lem_smartspeed(struct adapter *adapter) 2449 { 2450 u16 phy_tmp; 2451 2452 if (adapter->link_active || (adapter->hw.phy.type != e1000_phy_igp) || 2453 adapter->hw.mac.autoneg == 0 || 2454 (adapter->hw.phy.autoneg_advertised & ADVERTISE_1000_FULL) == 0) 2455 return; 2456 2457 if (adapter->smartspeed == 0) { 2458 /* If Master/Slave config fault is asserted twice, 2459 * we assume back-to-back */ 2460 e1000_read_phy_reg(&adapter->hw, PHY_1000T_STATUS, &phy_tmp); 2461 if (!(phy_tmp & SR_1000T_MS_CONFIG_FAULT)) 2462 return; 2463 e1000_read_phy_reg(&adapter->hw, PHY_1000T_STATUS, &phy_tmp); 2464 if (phy_tmp & SR_1000T_MS_CONFIG_FAULT) { 2465 e1000_read_phy_reg(&adapter->hw, 2466 PHY_1000T_CTRL, &phy_tmp); 2467 if(phy_tmp & CR_1000T_MS_ENABLE) { 2468 phy_tmp &= ~CR_1000T_MS_ENABLE; 2469 e1000_write_phy_reg(&adapter->hw, 2470 PHY_1000T_CTRL, phy_tmp); 2471 adapter->smartspeed++; 2472 if(adapter->hw.mac.autoneg && 2473 !e1000_copper_link_autoneg(&adapter->hw) && 2474 !e1000_read_phy_reg(&adapter->hw, 2475 PHY_CONTROL, &phy_tmp)) { 2476 phy_tmp |= (MII_CR_AUTO_NEG_EN | 2477 MII_CR_RESTART_AUTO_NEG); 2478 e1000_write_phy_reg(&adapter->hw, 2479 PHY_CONTROL, phy_tmp); 2480 } 2481 } 2482 } 2483 return; 2484 } else if(adapter->smartspeed == EM_SMARTSPEED_DOWNSHIFT) { 2485 /* If still no link, perhaps using 2/3 pair cable */ 2486 e1000_read_phy_reg(&adapter->hw, PHY_1000T_CTRL, &phy_tmp); 2487 phy_tmp |= CR_1000T_MS_ENABLE; 2488 e1000_write_phy_reg(&adapter->hw, PHY_1000T_CTRL, phy_tmp); 2489 if(adapter->hw.mac.autoneg && 2490 !e1000_copper_link_autoneg(&adapter->hw) && 2491 !e1000_read_phy_reg(&adapter->hw, PHY_CONTROL, &phy_tmp)) { 2492 phy_tmp |= (MII_CR_AUTO_NEG_EN | 2493 MII_CR_RESTART_AUTO_NEG); 2494 e1000_write_phy_reg(&adapter->hw, PHY_CONTROL, phy_tmp); 2495 } 2496 } 2497 /* Restart process after EM_SMARTSPEED_MAX iterations */ 2498 if(adapter->smartspeed++ == EM_SMARTSPEED_MAX) 2499 adapter->smartspeed = 0; 2500 } 2501 2502 2503 /* 2504 * Manage DMA'able memory. 2505 */ 2506 static void 2507 lem_dmamap_cb(void *arg, bus_dma_segment_t *segs, int nseg, int error) 2508 { 2509 if (error) 2510 return; 2511 *(bus_addr_t *) arg = segs[0].ds_addr; 2512 } 2513 2514 static int 2515 lem_dma_malloc(struct adapter *adapter, bus_size_t size, 2516 struct em_dma_alloc *dma, int mapflags) 2517 { 2518 int error; 2519 2520 error = bus_dma_tag_create(bus_get_dma_tag(adapter->dev), /* parent */ 2521 EM_DBA_ALIGN, 0, /* alignment, bounds */ 2522 BUS_SPACE_MAXADDR, /* lowaddr */ 2523 BUS_SPACE_MAXADDR, /* highaddr */ 2524 NULL, NULL, /* filter, filterarg */ 2525 size, /* maxsize */ 2526 1, /* nsegments */ 2527 size, /* maxsegsize */ 2528 0, /* flags */ 2529 NULL, /* lockfunc */ 2530 NULL, /* lockarg */ 2531 &dma->dma_tag); 2532 if (error) { 2533 device_printf(adapter->dev, 2534 "%s: bus_dma_tag_create failed: %d\n", 2535 __func__, error); 2536 goto fail_0; 2537 } 2538 2539 error = bus_dmamem_alloc(dma->dma_tag, (void**) &dma->dma_vaddr, 2540 BUS_DMA_NOWAIT | BUS_DMA_COHERENT, &dma->dma_map); 2541 if (error) { 2542 device_printf(adapter->dev, 2543 "%s: bus_dmamem_alloc(%ju) failed: %d\n", 2544 __func__, (uintmax_t)size, error); 2545 goto fail_2; 2546 } 2547 2548 dma->dma_paddr = 0; 2549 error = bus_dmamap_load(dma->dma_tag, dma->dma_map, dma->dma_vaddr, 2550 size, lem_dmamap_cb, &dma->dma_paddr, mapflags | BUS_DMA_NOWAIT); 2551 if (error || dma->dma_paddr == 0) { 2552 device_printf(adapter->dev, 2553 "%s: bus_dmamap_load failed: %d\n", 2554 __func__, error); 2555 goto fail_3; 2556 } 2557 2558 return (0); 2559 2560 fail_3: 2561 bus_dmamap_unload(dma->dma_tag, dma->dma_map); 2562 fail_2: 2563 bus_dmamem_free(dma->dma_tag, dma->dma_vaddr, dma->dma_map); 2564 bus_dma_tag_destroy(dma->dma_tag); 2565 fail_0: 2566 dma->dma_map = NULL; 2567 dma->dma_tag = NULL; 2568 2569 return (error); 2570 } 2571 2572 static void 2573 lem_dma_free(struct adapter *adapter, struct em_dma_alloc *dma) 2574 { 2575 if (dma->dma_tag == NULL) 2576 return; 2577 if (dma->dma_map != NULL) { 2578 bus_dmamap_sync(dma->dma_tag, dma->dma_map, 2579 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 2580 bus_dmamap_unload(dma->dma_tag, dma->dma_map); 2581 bus_dmamem_free(dma->dma_tag, dma->dma_vaddr, dma->dma_map); 2582 dma->dma_map = NULL; 2583 } 2584 bus_dma_tag_destroy(dma->dma_tag); 2585 dma->dma_tag = NULL; 2586 } 2587 2588 2589 /********************************************************************* 2590 * 2591 * Allocate memory for tx_buffer structures. The tx_buffer stores all 2592 * the information needed to transmit a packet on the wire. 2593 * 2594 **********************************************************************/ 2595 static int 2596 lem_allocate_transmit_structures(struct adapter *adapter) 2597 { 2598 device_t dev = adapter->dev; 2599 struct em_buffer *tx_buffer; 2600 int error; 2601 2602 /* 2603 * Create DMA tags for tx descriptors 2604 */ 2605 if ((error = bus_dma_tag_create(bus_get_dma_tag(dev), /* parent */ 2606 1, 0, /* alignment, bounds */ 2607 BUS_SPACE_MAXADDR, /* lowaddr */ 2608 BUS_SPACE_MAXADDR, /* highaddr */ 2609 NULL, NULL, /* filter, filterarg */ 2610 MCLBYTES * EM_MAX_SCATTER, /* maxsize */ 2611 EM_MAX_SCATTER, /* nsegments */ 2612 MCLBYTES, /* maxsegsize */ 2613 0, /* flags */ 2614 NULL, /* lockfunc */ 2615 NULL, /* lockarg */ 2616 &adapter->txtag)) != 0) { 2617 device_printf(dev, "Unable to allocate TX DMA tag\n"); 2618 goto fail; 2619 } 2620 2621 adapter->tx_buffer_area = malloc(sizeof(struct em_buffer) * 2622 adapter->num_tx_desc, M_DEVBUF, M_NOWAIT | M_ZERO); 2623 if (adapter->tx_buffer_area == NULL) { 2624 device_printf(dev, "Unable to allocate tx_buffer memory\n"); 2625 error = ENOMEM; 2626 goto fail; 2627 } 2628 2629 /* Create the descriptor buffer dma maps */ 2630 for (int i = 0; i < adapter->num_tx_desc; i++) { 2631 tx_buffer = &adapter->tx_buffer_area[i]; 2632 error = bus_dmamap_create(adapter->txtag, 0, &tx_buffer->map); 2633 if (error != 0) { 2634 device_printf(dev, "Unable to create TX DMA map\n"); 2635 goto fail; 2636 } 2637 tx_buffer->next_eop = -1; 2638 } 2639 2640 return (0); 2641 fail: 2642 lem_free_transmit_structures(adapter); 2643 return (error); 2644 } 2645 2646 /********************************************************************* 2647 * 2648 * (Re)Initialize transmit structures. 2649 * 2650 **********************************************************************/ 2651 static void 2652 lem_setup_transmit_structures(struct adapter *adapter) 2653 { 2654 struct em_buffer *tx_buffer; 2655 #ifdef DEV_NETMAP 2656 /* we are already locked */ 2657 struct netmap_adapter *na = NA(adapter->ifp); 2658 struct netmap_slot *slot = netmap_reset(na, NR_TX, 0, 0); 2659 #endif /* DEV_NETMAP */ 2660 2661 /* Clear the old ring contents */ 2662 bzero(adapter->tx_desc_base, 2663 (sizeof(struct e1000_tx_desc)) * adapter->num_tx_desc); 2664 2665 /* Free any existing TX buffers */ 2666 for (int i = 0; i < adapter->num_tx_desc; i++, tx_buffer++) { 2667 tx_buffer = &adapter->tx_buffer_area[i]; 2668 bus_dmamap_sync(adapter->txtag, tx_buffer->map, 2669 BUS_DMASYNC_POSTWRITE); 2670 bus_dmamap_unload(adapter->txtag, tx_buffer->map); 2671 m_freem(tx_buffer->m_head); 2672 tx_buffer->m_head = NULL; 2673 #ifdef DEV_NETMAP 2674 if (slot) { 2675 /* the i-th NIC entry goes to slot si */ 2676 int si = netmap_idx_n2k(&na->tx_rings[0], i); 2677 uint64_t paddr; 2678 void *addr; 2679 2680 addr = PNMB(slot + si, &paddr); 2681 adapter->tx_desc_base[i].buffer_addr = htole64(paddr); 2682 /* reload the map for netmap mode */ 2683 netmap_load_map(adapter->txtag, tx_buffer->map, addr); 2684 } 2685 #endif /* DEV_NETMAP */ 2686 tx_buffer->next_eop = -1; 2687 } 2688 2689 /* Reset state */ 2690 adapter->last_hw_offload = 0; 2691 adapter->next_avail_tx_desc = 0; 2692 adapter->next_tx_to_clean = 0; 2693 adapter->num_tx_desc_avail = adapter->num_tx_desc; 2694 2695 bus_dmamap_sync(adapter->txdma.dma_tag, adapter->txdma.dma_map, 2696 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 2697 2698 return; 2699 } 2700 2701 /********************************************************************* 2702 * 2703 * Enable transmit unit. 2704 * 2705 **********************************************************************/ 2706 static void 2707 lem_initialize_transmit_unit(struct adapter *adapter) 2708 { 2709 u32 tctl, tipg = 0; 2710 u64 bus_addr; 2711 2712 INIT_DEBUGOUT("lem_initialize_transmit_unit: begin"); 2713 /* Setup the Base and Length of the Tx Descriptor Ring */ 2714 bus_addr = adapter->txdma.dma_paddr; 2715 E1000_WRITE_REG(&adapter->hw, E1000_TDLEN(0), 2716 adapter->num_tx_desc * sizeof(struct e1000_tx_desc)); 2717 E1000_WRITE_REG(&adapter->hw, E1000_TDBAH(0), 2718 (u32)(bus_addr >> 32)); 2719 E1000_WRITE_REG(&adapter->hw, E1000_TDBAL(0), 2720 (u32)bus_addr); 2721 /* Setup the HW Tx Head and Tail descriptor pointers */ 2722 E1000_WRITE_REG(&adapter->hw, E1000_TDT(0), 0); 2723 E1000_WRITE_REG(&adapter->hw, E1000_TDH(0), 0); 2724 2725 HW_DEBUGOUT2("Base = %x, Length = %x\n", 2726 E1000_READ_REG(&adapter->hw, E1000_TDBAL(0)), 2727 E1000_READ_REG(&adapter->hw, E1000_TDLEN(0))); 2728 2729 /* Set the default values for the Tx Inter Packet Gap timer */ 2730 switch (adapter->hw.mac.type) { 2731 case e1000_82542: 2732 tipg = DEFAULT_82542_TIPG_IPGT; 2733 tipg |= DEFAULT_82542_TIPG_IPGR1 << E1000_TIPG_IPGR1_SHIFT; 2734 tipg |= DEFAULT_82542_TIPG_IPGR2 << E1000_TIPG_IPGR2_SHIFT; 2735 break; 2736 default: 2737 if ((adapter->hw.phy.media_type == e1000_media_type_fiber) || 2738 (adapter->hw.phy.media_type == 2739 e1000_media_type_internal_serdes)) 2740 tipg = DEFAULT_82543_TIPG_IPGT_FIBER; 2741 else 2742 tipg = DEFAULT_82543_TIPG_IPGT_COPPER; 2743 tipg |= DEFAULT_82543_TIPG_IPGR1 << E1000_TIPG_IPGR1_SHIFT; 2744 tipg |= DEFAULT_82543_TIPG_IPGR2 << E1000_TIPG_IPGR2_SHIFT; 2745 } 2746 2747 E1000_WRITE_REG(&adapter->hw, E1000_TIPG, tipg); 2748 E1000_WRITE_REG(&adapter->hw, E1000_TIDV, adapter->tx_int_delay.value); 2749 if(adapter->hw.mac.type >= e1000_82540) 2750 E1000_WRITE_REG(&adapter->hw, E1000_TADV, 2751 adapter->tx_abs_int_delay.value); 2752 2753 /* Program the Transmit Control Register */ 2754 tctl = E1000_READ_REG(&adapter->hw, E1000_TCTL); 2755 tctl &= ~E1000_TCTL_CT; 2756 tctl |= (E1000_TCTL_PSP | E1000_TCTL_RTLC | E1000_TCTL_EN | 2757 (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT)); 2758 2759 /* This write will effectively turn on the transmit unit. */ 2760 E1000_WRITE_REG(&adapter->hw, E1000_TCTL, tctl); 2761 2762 /* Setup Transmit Descriptor Base Settings */ 2763 adapter->txd_cmd = E1000_TXD_CMD_IFCS; 2764 2765 if (adapter->tx_int_delay.value > 0) 2766 adapter->txd_cmd |= E1000_TXD_CMD_IDE; 2767 } 2768 2769 /********************************************************************* 2770 * 2771 * Free all transmit related data structures. 2772 * 2773 **********************************************************************/ 2774 static void 2775 lem_free_transmit_structures(struct adapter *adapter) 2776 { 2777 struct em_buffer *tx_buffer; 2778 2779 INIT_DEBUGOUT("free_transmit_structures: begin"); 2780 2781 if (adapter->tx_buffer_area != NULL) { 2782 for (int i = 0; i < adapter->num_tx_desc; i++) { 2783 tx_buffer = &adapter->tx_buffer_area[i]; 2784 if (tx_buffer->m_head != NULL) { 2785 bus_dmamap_sync(adapter->txtag, tx_buffer->map, 2786 BUS_DMASYNC_POSTWRITE); 2787 bus_dmamap_unload(adapter->txtag, 2788 tx_buffer->map); 2789 m_freem(tx_buffer->m_head); 2790 tx_buffer->m_head = NULL; 2791 } else if (tx_buffer->map != NULL) 2792 bus_dmamap_unload(adapter->txtag, 2793 tx_buffer->map); 2794 if (tx_buffer->map != NULL) { 2795 bus_dmamap_destroy(adapter->txtag, 2796 tx_buffer->map); 2797 tx_buffer->map = NULL; 2798 } 2799 } 2800 } 2801 if (adapter->tx_buffer_area != NULL) { 2802 free(adapter->tx_buffer_area, M_DEVBUF); 2803 adapter->tx_buffer_area = NULL; 2804 } 2805 if (adapter->txtag != NULL) { 2806 bus_dma_tag_destroy(adapter->txtag); 2807 adapter->txtag = NULL; 2808 } 2809 #if __FreeBSD_version >= 800000 2810 if (adapter->br != NULL) 2811 buf_ring_free(adapter->br, M_DEVBUF); 2812 #endif 2813 } 2814 2815 /********************************************************************* 2816 * 2817 * The offload context needs to be set when we transfer the first 2818 * packet of a particular protocol (TCP/UDP). This routine has been 2819 * enhanced to deal with inserted VLAN headers, and IPV6 (not complete) 2820 * 2821 * Added back the old method of keeping the current context type 2822 * and not setting if unnecessary, as this is reported to be a 2823 * big performance win. -jfv 2824 **********************************************************************/ 2825 static void 2826 lem_transmit_checksum_setup(struct adapter *adapter, struct mbuf *mp, 2827 u32 *txd_upper, u32 *txd_lower) 2828 { 2829 struct e1000_context_desc *TXD = NULL; 2830 struct em_buffer *tx_buffer; 2831 struct ether_vlan_header *eh; 2832 struct ip *ip = NULL; 2833 struct ip6_hdr *ip6; 2834 int curr_txd, ehdrlen; 2835 u32 cmd, hdr_len, ip_hlen; 2836 u16 etype; 2837 u8 ipproto; 2838 2839 2840 cmd = hdr_len = ipproto = 0; 2841 *txd_upper = *txd_lower = 0; 2842 curr_txd = adapter->next_avail_tx_desc; 2843 2844 /* 2845 * Determine where frame payload starts. 2846 * Jump over vlan headers if already present, 2847 * helpful for QinQ too. 2848 */ 2849 eh = mtod(mp, struct ether_vlan_header *); 2850 if (eh->evl_encap_proto == htons(ETHERTYPE_VLAN)) { 2851 etype = ntohs(eh->evl_proto); 2852 ehdrlen = ETHER_HDR_LEN + ETHER_VLAN_ENCAP_LEN; 2853 } else { 2854 etype = ntohs(eh->evl_encap_proto); 2855 ehdrlen = ETHER_HDR_LEN; 2856 } 2857 2858 /* 2859 * We only support TCP/UDP for IPv4 and IPv6 for the moment. 2860 * TODO: Support SCTP too when it hits the tree. 2861 */ 2862 switch (etype) { 2863 case ETHERTYPE_IP: 2864 ip = (struct ip *)(mp->m_data + ehdrlen); 2865 ip_hlen = ip->ip_hl << 2; 2866 2867 /* Setup of IP header checksum. */ 2868 if (mp->m_pkthdr.csum_flags & CSUM_IP) { 2869 /* 2870 * Start offset for header checksum calculation. 2871 * End offset for header checksum calculation. 2872 * Offset of place to put the checksum. 2873 */ 2874 TXD = (struct e1000_context_desc *) 2875 &adapter->tx_desc_base[curr_txd]; 2876 TXD->lower_setup.ip_fields.ipcss = ehdrlen; 2877 TXD->lower_setup.ip_fields.ipcse = 2878 htole16(ehdrlen + ip_hlen); 2879 TXD->lower_setup.ip_fields.ipcso = 2880 ehdrlen + offsetof(struct ip, ip_sum); 2881 cmd |= E1000_TXD_CMD_IP; 2882 *txd_upper |= E1000_TXD_POPTS_IXSM << 8; 2883 } 2884 2885 hdr_len = ehdrlen + ip_hlen; 2886 ipproto = ip->ip_p; 2887 2888 break; 2889 case ETHERTYPE_IPV6: 2890 ip6 = (struct ip6_hdr *)(mp->m_data + ehdrlen); 2891 ip_hlen = sizeof(struct ip6_hdr); /* XXX: No header stacking. */ 2892 2893 /* IPv6 doesn't have a header checksum. */ 2894 2895 hdr_len = ehdrlen + ip_hlen; 2896 ipproto = ip6->ip6_nxt; 2897 break; 2898 2899 default: 2900 return; 2901 } 2902 2903 switch (ipproto) { 2904 case IPPROTO_TCP: 2905 if (mp->m_pkthdr.csum_flags & CSUM_TCP) { 2906 *txd_lower = E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D; 2907 *txd_upper |= E1000_TXD_POPTS_TXSM << 8; 2908 /* no need for context if already set */ 2909 if (adapter->last_hw_offload == CSUM_TCP) 2910 return; 2911 adapter->last_hw_offload = CSUM_TCP; 2912 /* 2913 * Start offset for payload checksum calculation. 2914 * End offset for payload checksum calculation. 2915 * Offset of place to put the checksum. 2916 */ 2917 TXD = (struct e1000_context_desc *) 2918 &adapter->tx_desc_base[curr_txd]; 2919 TXD->upper_setup.tcp_fields.tucss = hdr_len; 2920 TXD->upper_setup.tcp_fields.tucse = htole16(0); 2921 TXD->upper_setup.tcp_fields.tucso = 2922 hdr_len + offsetof(struct tcphdr, th_sum); 2923 cmd |= E1000_TXD_CMD_TCP; 2924 } 2925 break; 2926 case IPPROTO_UDP: 2927 { 2928 if (mp->m_pkthdr.csum_flags & CSUM_UDP) { 2929 *txd_lower = E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D; 2930 *txd_upper |= E1000_TXD_POPTS_TXSM << 8; 2931 /* no need for context if already set */ 2932 if (adapter->last_hw_offload == CSUM_UDP) 2933 return; 2934 adapter->last_hw_offload = CSUM_UDP; 2935 /* 2936 * Start offset for header checksum calculation. 2937 * End offset for header checksum calculation. 2938 * Offset of place to put the checksum. 2939 */ 2940 TXD = (struct e1000_context_desc *) 2941 &adapter->tx_desc_base[curr_txd]; 2942 TXD->upper_setup.tcp_fields.tucss = hdr_len; 2943 TXD->upper_setup.tcp_fields.tucse = htole16(0); 2944 TXD->upper_setup.tcp_fields.tucso = 2945 hdr_len + offsetof(struct udphdr, uh_sum); 2946 } 2947 /* Fall Thru */ 2948 } 2949 default: 2950 break; 2951 } 2952 2953 if (TXD == NULL) 2954 return; 2955 TXD->tcp_seg_setup.data = htole32(0); 2956 TXD->cmd_and_length = 2957 htole32(adapter->txd_cmd | E1000_TXD_CMD_DEXT | cmd); 2958 tx_buffer = &adapter->tx_buffer_area[curr_txd]; 2959 tx_buffer->m_head = NULL; 2960 tx_buffer->next_eop = -1; 2961 2962 if (++curr_txd == adapter->num_tx_desc) 2963 curr_txd = 0; 2964 2965 adapter->num_tx_desc_avail--; 2966 adapter->next_avail_tx_desc = curr_txd; 2967 } 2968 2969 2970 /********************************************************************** 2971 * 2972 * Examine each tx_buffer in the used queue. If the hardware is done 2973 * processing the packet then free associated resources. The 2974 * tx_buffer is put back on the free queue. 2975 * 2976 **********************************************************************/ 2977 static void 2978 lem_txeof(struct adapter *adapter) 2979 { 2980 int first, last, done, num_avail; 2981 struct em_buffer *tx_buffer; 2982 struct e1000_tx_desc *tx_desc, *eop_desc; 2983 struct ifnet *ifp = adapter->ifp; 2984 2985 EM_TX_LOCK_ASSERT(adapter); 2986 2987 #ifdef DEV_NETMAP 2988 if (netmap_tx_irq(ifp, 0)) 2989 return; 2990 #endif /* DEV_NETMAP */ 2991 if (adapter->num_tx_desc_avail == adapter->num_tx_desc) 2992 return; 2993 2994 num_avail = adapter->num_tx_desc_avail; 2995 first = adapter->next_tx_to_clean; 2996 tx_desc = &adapter->tx_desc_base[first]; 2997 tx_buffer = &adapter->tx_buffer_area[first]; 2998 last = tx_buffer->next_eop; 2999 eop_desc = &adapter->tx_desc_base[last]; 3000 3001 /* 3002 * What this does is get the index of the 3003 * first descriptor AFTER the EOP of the 3004 * first packet, that way we can do the 3005 * simple comparison on the inner while loop. 3006 */ 3007 if (++last == adapter->num_tx_desc) 3008 last = 0; 3009 done = last; 3010 3011 bus_dmamap_sync(adapter->txdma.dma_tag, adapter->txdma.dma_map, 3012 BUS_DMASYNC_POSTREAD); 3013 3014 while (eop_desc->upper.fields.status & E1000_TXD_STAT_DD) { 3015 /* We clean the range of the packet */ 3016 while (first != done) { 3017 tx_desc->upper.data = 0; 3018 tx_desc->lower.data = 0; 3019 tx_desc->buffer_addr = 0; 3020 ++num_avail; 3021 3022 if (tx_buffer->m_head) { 3023 ifp->if_opackets++; 3024 bus_dmamap_sync(adapter->txtag, 3025 tx_buffer->map, 3026 BUS_DMASYNC_POSTWRITE); 3027 bus_dmamap_unload(adapter->txtag, 3028 tx_buffer->map); 3029 3030 m_freem(tx_buffer->m_head); 3031 tx_buffer->m_head = NULL; 3032 } 3033 tx_buffer->next_eop = -1; 3034 adapter->watchdog_time = ticks; 3035 3036 if (++first == adapter->num_tx_desc) 3037 first = 0; 3038 3039 tx_buffer = &adapter->tx_buffer_area[first]; 3040 tx_desc = &adapter->tx_desc_base[first]; 3041 } 3042 /* See if we can continue to the next packet */ 3043 last = tx_buffer->next_eop; 3044 if (last != -1) { 3045 eop_desc = &adapter->tx_desc_base[last]; 3046 /* Get new done point */ 3047 if (++last == adapter->num_tx_desc) last = 0; 3048 done = last; 3049 } else 3050 break; 3051 } 3052 bus_dmamap_sync(adapter->txdma.dma_tag, adapter->txdma.dma_map, 3053 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 3054 3055 adapter->next_tx_to_clean = first; 3056 adapter->num_tx_desc_avail = num_avail; 3057 3058 /* 3059 * If we have enough room, clear IFF_DRV_OACTIVE to 3060 * tell the stack that it is OK to send packets. 3061 * If there are no pending descriptors, clear the watchdog. 3062 */ 3063 if (adapter->num_tx_desc_avail > EM_TX_CLEANUP_THRESHOLD) { 3064 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 3065 if (adapter->num_tx_desc_avail == adapter->num_tx_desc) { 3066 adapter->watchdog_check = FALSE; 3067 return; 3068 } 3069 } 3070 } 3071 3072 /********************************************************************* 3073 * 3074 * When Link is lost sometimes there is work still in the TX ring 3075 * which may result in a watchdog, rather than allow that we do an 3076 * attempted cleanup and then reinit here. Note that this has been 3077 * seens mostly with fiber adapters. 3078 * 3079 **********************************************************************/ 3080 static void 3081 lem_tx_purge(struct adapter *adapter) 3082 { 3083 if ((!adapter->link_active) && (adapter->watchdog_check)) { 3084 EM_TX_LOCK(adapter); 3085 lem_txeof(adapter); 3086 EM_TX_UNLOCK(adapter); 3087 if (adapter->watchdog_check) /* Still outstanding? */ 3088 lem_init_locked(adapter); 3089 } 3090 } 3091 3092 /********************************************************************* 3093 * 3094 * Get a buffer from system mbuf buffer pool. 3095 * 3096 **********************************************************************/ 3097 static int 3098 lem_get_buf(struct adapter *adapter, int i) 3099 { 3100 struct mbuf *m; 3101 bus_dma_segment_t segs[1]; 3102 bus_dmamap_t map; 3103 struct em_buffer *rx_buffer; 3104 int error, nsegs; 3105 3106 m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR); 3107 if (m == NULL) { 3108 adapter->mbuf_cluster_failed++; 3109 return (ENOBUFS); 3110 } 3111 m->m_len = m->m_pkthdr.len = MCLBYTES; 3112 3113 if (adapter->max_frame_size <= (MCLBYTES - ETHER_ALIGN)) 3114 m_adj(m, ETHER_ALIGN); 3115 3116 /* 3117 * Using memory from the mbuf cluster pool, invoke the 3118 * bus_dma machinery to arrange the memory mapping. 3119 */ 3120 error = bus_dmamap_load_mbuf_sg(adapter->rxtag, 3121 adapter->rx_sparemap, m, segs, &nsegs, BUS_DMA_NOWAIT); 3122 if (error != 0) { 3123 m_free(m); 3124 return (error); 3125 } 3126 3127 /* If nsegs is wrong then the stack is corrupt. */ 3128 KASSERT(nsegs == 1, ("Too many segments returned!")); 3129 3130 rx_buffer = &adapter->rx_buffer_area[i]; 3131 if (rx_buffer->m_head != NULL) 3132 bus_dmamap_unload(adapter->rxtag, rx_buffer->map); 3133 3134 map = rx_buffer->map; 3135 rx_buffer->map = adapter->rx_sparemap; 3136 adapter->rx_sparemap = map; 3137 bus_dmamap_sync(adapter->rxtag, rx_buffer->map, BUS_DMASYNC_PREREAD); 3138 rx_buffer->m_head = m; 3139 3140 adapter->rx_desc_base[i].buffer_addr = htole64(segs[0].ds_addr); 3141 return (0); 3142 } 3143 3144 /********************************************************************* 3145 * 3146 * Allocate memory for rx_buffer structures. Since we use one 3147 * rx_buffer per received packet, the maximum number of rx_buffer's 3148 * that we'll need is equal to the number of receive descriptors 3149 * that we've allocated. 3150 * 3151 **********************************************************************/ 3152 static int 3153 lem_allocate_receive_structures(struct adapter *adapter) 3154 { 3155 device_t dev = adapter->dev; 3156 struct em_buffer *rx_buffer; 3157 int i, error; 3158 3159 adapter->rx_buffer_area = malloc(sizeof(struct em_buffer) * 3160 adapter->num_rx_desc, M_DEVBUF, M_NOWAIT | M_ZERO); 3161 if (adapter->rx_buffer_area == NULL) { 3162 device_printf(dev, "Unable to allocate rx_buffer memory\n"); 3163 return (ENOMEM); 3164 } 3165 3166 error = bus_dma_tag_create(bus_get_dma_tag(dev), /* parent */ 3167 1, 0, /* alignment, bounds */ 3168 BUS_SPACE_MAXADDR, /* lowaddr */ 3169 BUS_SPACE_MAXADDR, /* highaddr */ 3170 NULL, NULL, /* filter, filterarg */ 3171 MCLBYTES, /* maxsize */ 3172 1, /* nsegments */ 3173 MCLBYTES, /* maxsegsize */ 3174 0, /* flags */ 3175 NULL, /* lockfunc */ 3176 NULL, /* lockarg */ 3177 &adapter->rxtag); 3178 if (error) { 3179 device_printf(dev, "%s: bus_dma_tag_create failed %d\n", 3180 __func__, error); 3181 goto fail; 3182 } 3183 3184 /* Create the spare map (used by getbuf) */ 3185 error = bus_dmamap_create(adapter->rxtag, BUS_DMA_NOWAIT, 3186 &adapter->rx_sparemap); 3187 if (error) { 3188 device_printf(dev, "%s: bus_dmamap_create failed: %d\n", 3189 __func__, error); 3190 goto fail; 3191 } 3192 3193 rx_buffer = adapter->rx_buffer_area; 3194 for (i = 0; i < adapter->num_rx_desc; i++, rx_buffer++) { 3195 error = bus_dmamap_create(adapter->rxtag, BUS_DMA_NOWAIT, 3196 &rx_buffer->map); 3197 if (error) { 3198 device_printf(dev, "%s: bus_dmamap_create failed: %d\n", 3199 __func__, error); 3200 goto fail; 3201 } 3202 } 3203 3204 return (0); 3205 3206 fail: 3207 lem_free_receive_structures(adapter); 3208 return (error); 3209 } 3210 3211 /********************************************************************* 3212 * 3213 * (Re)initialize receive structures. 3214 * 3215 **********************************************************************/ 3216 static int 3217 lem_setup_receive_structures(struct adapter *adapter) 3218 { 3219 struct em_buffer *rx_buffer; 3220 int i, error; 3221 #ifdef DEV_NETMAP 3222 /* we are already under lock */ 3223 struct netmap_adapter *na = NA(adapter->ifp); 3224 struct netmap_slot *slot = netmap_reset(na, NR_RX, 0, 0); 3225 #endif 3226 3227 /* Reset descriptor ring */ 3228 bzero(adapter->rx_desc_base, 3229 (sizeof(struct e1000_rx_desc)) * adapter->num_rx_desc); 3230 3231 /* Free current RX buffers. */ 3232 rx_buffer = adapter->rx_buffer_area; 3233 for (i = 0; i < adapter->num_rx_desc; i++, rx_buffer++) { 3234 if (rx_buffer->m_head != NULL) { 3235 bus_dmamap_sync(adapter->rxtag, rx_buffer->map, 3236 BUS_DMASYNC_POSTREAD); 3237 bus_dmamap_unload(adapter->rxtag, rx_buffer->map); 3238 m_freem(rx_buffer->m_head); 3239 rx_buffer->m_head = NULL; 3240 } 3241 } 3242 3243 /* Allocate new ones. */ 3244 for (i = 0; i < adapter->num_rx_desc; i++) { 3245 #ifdef DEV_NETMAP 3246 if (slot) { 3247 /* the i-th NIC entry goes to slot si */ 3248 int si = netmap_idx_n2k(&na->rx_rings[0], i); 3249 uint64_t paddr; 3250 void *addr; 3251 3252 addr = PNMB(slot + si, &paddr); 3253 netmap_load_map(adapter->rxtag, rx_buffer->map, addr); 3254 /* Update descriptor */ 3255 adapter->rx_desc_base[i].buffer_addr = htole64(paddr); 3256 continue; 3257 } 3258 #endif /* DEV_NETMAP */ 3259 error = lem_get_buf(adapter, i); 3260 if (error) 3261 return (error); 3262 } 3263 3264 /* Setup our descriptor pointers */ 3265 adapter->next_rx_desc_to_check = 0; 3266 bus_dmamap_sync(adapter->rxdma.dma_tag, adapter->rxdma.dma_map, 3267 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 3268 3269 return (0); 3270 } 3271 3272 /********************************************************************* 3273 * 3274 * Enable receive unit. 3275 * 3276 **********************************************************************/ 3277 3278 static void 3279 lem_initialize_receive_unit(struct adapter *adapter) 3280 { 3281 struct ifnet *ifp = adapter->ifp; 3282 u64 bus_addr; 3283 u32 rctl, rxcsum; 3284 3285 INIT_DEBUGOUT("lem_initialize_receive_unit: begin"); 3286 3287 /* 3288 * Make sure receives are disabled while setting 3289 * up the descriptor ring 3290 */ 3291 rctl = E1000_READ_REG(&adapter->hw, E1000_RCTL); 3292 E1000_WRITE_REG(&adapter->hw, E1000_RCTL, rctl & ~E1000_RCTL_EN); 3293 3294 if (adapter->hw.mac.type >= e1000_82540) { 3295 E1000_WRITE_REG(&adapter->hw, E1000_RADV, 3296 adapter->rx_abs_int_delay.value); 3297 /* 3298 * Set the interrupt throttling rate. Value is calculated 3299 * as DEFAULT_ITR = 1/(MAX_INTS_PER_SEC * 256ns) 3300 */ 3301 E1000_WRITE_REG(&adapter->hw, E1000_ITR, DEFAULT_ITR); 3302 } 3303 3304 /* Setup the Base and Length of the Rx Descriptor Ring */ 3305 bus_addr = adapter->rxdma.dma_paddr; 3306 E1000_WRITE_REG(&adapter->hw, E1000_RDLEN(0), 3307 adapter->num_rx_desc * sizeof(struct e1000_rx_desc)); 3308 E1000_WRITE_REG(&adapter->hw, E1000_RDBAH(0), 3309 (u32)(bus_addr >> 32)); 3310 E1000_WRITE_REG(&adapter->hw, E1000_RDBAL(0), 3311 (u32)bus_addr); 3312 3313 /* Setup the Receive Control Register */ 3314 rctl &= ~(3 << E1000_RCTL_MO_SHIFT); 3315 rctl |= E1000_RCTL_EN | E1000_RCTL_BAM | E1000_RCTL_LBM_NO | 3316 E1000_RCTL_RDMTS_HALF | 3317 (adapter->hw.mac.mc_filter_type << E1000_RCTL_MO_SHIFT); 3318 3319 /* Make sure VLAN Filters are off */ 3320 rctl &= ~E1000_RCTL_VFE; 3321 3322 if (e1000_tbi_sbp_enabled_82543(&adapter->hw)) 3323 rctl |= E1000_RCTL_SBP; 3324 else 3325 rctl &= ~E1000_RCTL_SBP; 3326 3327 switch (adapter->rx_buffer_len) { 3328 default: 3329 case 2048: 3330 rctl |= E1000_RCTL_SZ_2048; 3331 break; 3332 case 4096: 3333 rctl |= E1000_RCTL_SZ_4096 | 3334 E1000_RCTL_BSEX | E1000_RCTL_LPE; 3335 break; 3336 case 8192: 3337 rctl |= E1000_RCTL_SZ_8192 | 3338 E1000_RCTL_BSEX | E1000_RCTL_LPE; 3339 break; 3340 case 16384: 3341 rctl |= E1000_RCTL_SZ_16384 | 3342 E1000_RCTL_BSEX | E1000_RCTL_LPE; 3343 break; 3344 } 3345 3346 if (ifp->if_mtu > ETHERMTU) 3347 rctl |= E1000_RCTL_LPE; 3348 else 3349 rctl &= ~E1000_RCTL_LPE; 3350 3351 /* Enable 82543 Receive Checksum Offload for TCP and UDP */ 3352 if ((adapter->hw.mac.type >= e1000_82543) && 3353 (ifp->if_capenable & IFCAP_RXCSUM)) { 3354 rxcsum = E1000_READ_REG(&adapter->hw, E1000_RXCSUM); 3355 rxcsum |= (E1000_RXCSUM_IPOFL | E1000_RXCSUM_TUOFL); 3356 E1000_WRITE_REG(&adapter->hw, E1000_RXCSUM, rxcsum); 3357 } 3358 3359 /* Enable Receives */ 3360 E1000_WRITE_REG(&adapter->hw, E1000_RCTL, rctl); 3361 3362 /* 3363 * Setup the HW Rx Head and 3364 * Tail Descriptor Pointers 3365 */ 3366 E1000_WRITE_REG(&adapter->hw, E1000_RDH(0), 0); 3367 rctl = adapter->num_rx_desc - 1; /* default RDT value */ 3368 #ifdef DEV_NETMAP 3369 /* preserve buffers already made available to clients */ 3370 if (ifp->if_capenable & IFCAP_NETMAP) 3371 rctl -= nm_kr_rxspace(&NA(adapter->ifp)->rx_rings[0]); 3372 #endif /* DEV_NETMAP */ 3373 E1000_WRITE_REG(&adapter->hw, E1000_RDT(0), rctl); 3374 3375 return; 3376 } 3377 3378 /********************************************************************* 3379 * 3380 * Free receive related data structures. 3381 * 3382 **********************************************************************/ 3383 static void 3384 lem_free_receive_structures(struct adapter *adapter) 3385 { 3386 struct em_buffer *rx_buffer; 3387 int i; 3388 3389 INIT_DEBUGOUT("free_receive_structures: begin"); 3390 3391 if (adapter->rx_sparemap) { 3392 bus_dmamap_destroy(adapter->rxtag, adapter->rx_sparemap); 3393 adapter->rx_sparemap = NULL; 3394 } 3395 3396 /* Cleanup any existing buffers */ 3397 if (adapter->rx_buffer_area != NULL) { 3398 rx_buffer = adapter->rx_buffer_area; 3399 for (i = 0; i < adapter->num_rx_desc; i++, rx_buffer++) { 3400 if (rx_buffer->m_head != NULL) { 3401 bus_dmamap_sync(adapter->rxtag, rx_buffer->map, 3402 BUS_DMASYNC_POSTREAD); 3403 bus_dmamap_unload(adapter->rxtag, 3404 rx_buffer->map); 3405 m_freem(rx_buffer->m_head); 3406 rx_buffer->m_head = NULL; 3407 } else if (rx_buffer->map != NULL) 3408 bus_dmamap_unload(adapter->rxtag, 3409 rx_buffer->map); 3410 if (rx_buffer->map != NULL) { 3411 bus_dmamap_destroy(adapter->rxtag, 3412 rx_buffer->map); 3413 rx_buffer->map = NULL; 3414 } 3415 } 3416 } 3417 3418 if (adapter->rx_buffer_area != NULL) { 3419 free(adapter->rx_buffer_area, M_DEVBUF); 3420 adapter->rx_buffer_area = NULL; 3421 } 3422 3423 if (adapter->rxtag != NULL) { 3424 bus_dma_tag_destroy(adapter->rxtag); 3425 adapter->rxtag = NULL; 3426 } 3427 } 3428 3429 /********************************************************************* 3430 * 3431 * This routine executes in interrupt context. It replenishes 3432 * the mbufs in the descriptor and sends data which has been 3433 * dma'ed into host memory to upper layer. 3434 * 3435 * We loop at most count times if count is > 0, or until done if 3436 * count < 0. 3437 * 3438 * For polling we also now return the number of cleaned packets 3439 *********************************************************************/ 3440 static bool 3441 lem_rxeof(struct adapter *adapter, int count, int *done) 3442 { 3443 struct ifnet *ifp = adapter->ifp; 3444 struct mbuf *mp; 3445 u8 status = 0, accept_frame = 0, eop = 0; 3446 u16 len, desc_len, prev_len_adj; 3447 int i, rx_sent = 0; 3448 struct e1000_rx_desc *current_desc; 3449 3450 EM_RX_LOCK(adapter); 3451 i = adapter->next_rx_desc_to_check; 3452 current_desc = &adapter->rx_desc_base[i]; 3453 bus_dmamap_sync(adapter->rxdma.dma_tag, adapter->rxdma.dma_map, 3454 BUS_DMASYNC_POSTREAD); 3455 3456 #ifdef DEV_NETMAP 3457 if (netmap_rx_irq(ifp, 0, &rx_sent)) { 3458 EM_RX_UNLOCK(adapter); 3459 return (FALSE); 3460 } 3461 #endif /* DEV_NETMAP */ 3462 3463 if (!((current_desc->status) & E1000_RXD_STAT_DD)) { 3464 if (done != NULL) 3465 *done = rx_sent; 3466 EM_RX_UNLOCK(adapter); 3467 return (FALSE); 3468 } 3469 3470 while (count != 0 && ifp->if_drv_flags & IFF_DRV_RUNNING) { 3471 struct mbuf *m = NULL; 3472 3473 status = current_desc->status; 3474 if ((status & E1000_RXD_STAT_DD) == 0) 3475 break; 3476 3477 mp = adapter->rx_buffer_area[i].m_head; 3478 /* 3479 * Can't defer bus_dmamap_sync(9) because TBI_ACCEPT 3480 * needs to access the last received byte in the mbuf. 3481 */ 3482 bus_dmamap_sync(adapter->rxtag, adapter->rx_buffer_area[i].map, 3483 BUS_DMASYNC_POSTREAD); 3484 3485 accept_frame = 1; 3486 prev_len_adj = 0; 3487 desc_len = le16toh(current_desc->length); 3488 if (status & E1000_RXD_STAT_EOP) { 3489 count--; 3490 eop = 1; 3491 if (desc_len < ETHER_CRC_LEN) { 3492 len = 0; 3493 prev_len_adj = ETHER_CRC_LEN - desc_len; 3494 } else 3495 len = desc_len - ETHER_CRC_LEN; 3496 } else { 3497 eop = 0; 3498 len = desc_len; 3499 } 3500 3501 if (current_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK) { 3502 u8 last_byte; 3503 u32 pkt_len = desc_len; 3504 3505 if (adapter->fmp != NULL) 3506 pkt_len += adapter->fmp->m_pkthdr.len; 3507 3508 last_byte = *(mtod(mp, caddr_t) + desc_len - 1); 3509 if (TBI_ACCEPT(&adapter->hw, status, 3510 current_desc->errors, pkt_len, last_byte, 3511 adapter->min_frame_size, adapter->max_frame_size)) { 3512 e1000_tbi_adjust_stats_82543(&adapter->hw, 3513 &adapter->stats, pkt_len, 3514 adapter->hw.mac.addr, 3515 adapter->max_frame_size); 3516 if (len > 0) 3517 len--; 3518 } else 3519 accept_frame = 0; 3520 } 3521 3522 if (accept_frame) { 3523 if (lem_get_buf(adapter, i) != 0) { 3524 ifp->if_iqdrops++; 3525 goto discard; 3526 } 3527 3528 /* Assign correct length to the current fragment */ 3529 mp->m_len = len; 3530 3531 if (adapter->fmp == NULL) { 3532 mp->m_pkthdr.len = len; 3533 adapter->fmp = mp; /* Store the first mbuf */ 3534 adapter->lmp = mp; 3535 } else { 3536 /* Chain mbuf's together */ 3537 mp->m_flags &= ~M_PKTHDR; 3538 /* 3539 * Adjust length of previous mbuf in chain if 3540 * we received less than 4 bytes in the last 3541 * descriptor. 3542 */ 3543 if (prev_len_adj > 0) { 3544 adapter->lmp->m_len -= prev_len_adj; 3545 adapter->fmp->m_pkthdr.len -= 3546 prev_len_adj; 3547 } 3548 adapter->lmp->m_next = mp; 3549 adapter->lmp = adapter->lmp->m_next; 3550 adapter->fmp->m_pkthdr.len += len; 3551 } 3552 3553 if (eop) { 3554 adapter->fmp->m_pkthdr.rcvif = ifp; 3555 ifp->if_ipackets++; 3556 lem_receive_checksum(adapter, current_desc, 3557 adapter->fmp); 3558 #ifndef __NO_STRICT_ALIGNMENT 3559 if (adapter->max_frame_size > 3560 (MCLBYTES - ETHER_ALIGN) && 3561 lem_fixup_rx(adapter) != 0) 3562 goto skip; 3563 #endif 3564 if (status & E1000_RXD_STAT_VP) { 3565 adapter->fmp->m_pkthdr.ether_vtag = 3566 le16toh(current_desc->special); 3567 adapter->fmp->m_flags |= M_VLANTAG; 3568 } 3569 #ifndef __NO_STRICT_ALIGNMENT 3570 skip: 3571 #endif 3572 m = adapter->fmp; 3573 adapter->fmp = NULL; 3574 adapter->lmp = NULL; 3575 } 3576 } else { 3577 adapter->dropped_pkts++; 3578 discard: 3579 /* Reuse loaded DMA map and just update mbuf chain */ 3580 mp = adapter->rx_buffer_area[i].m_head; 3581 mp->m_len = mp->m_pkthdr.len = MCLBYTES; 3582 mp->m_data = mp->m_ext.ext_buf; 3583 mp->m_next = NULL; 3584 if (adapter->max_frame_size <= 3585 (MCLBYTES - ETHER_ALIGN)) 3586 m_adj(mp, ETHER_ALIGN); 3587 if (adapter->fmp != NULL) { 3588 m_freem(adapter->fmp); 3589 adapter->fmp = NULL; 3590 adapter->lmp = NULL; 3591 } 3592 m = NULL; 3593 } 3594 3595 /* Zero out the receive descriptors status. */ 3596 current_desc->status = 0; 3597 bus_dmamap_sync(adapter->rxdma.dma_tag, adapter->rxdma.dma_map, 3598 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 3599 3600 /* Advance our pointers to the next descriptor. */ 3601 if (++i == adapter->num_rx_desc) 3602 i = 0; 3603 /* Call into the stack */ 3604 if (m != NULL) { 3605 adapter->next_rx_desc_to_check = i; 3606 EM_RX_UNLOCK(adapter); 3607 (*ifp->if_input)(ifp, m); 3608 EM_RX_LOCK(adapter); 3609 rx_sent++; 3610 i = adapter->next_rx_desc_to_check; 3611 } 3612 current_desc = &adapter->rx_desc_base[i]; 3613 } 3614 adapter->next_rx_desc_to_check = i; 3615 3616 /* Advance the E1000's Receive Queue #0 "Tail Pointer". */ 3617 if (--i < 0) 3618 i = adapter->num_rx_desc - 1; 3619 E1000_WRITE_REG(&adapter->hw, E1000_RDT(0), i); 3620 if (done != NULL) 3621 *done = rx_sent; 3622 EM_RX_UNLOCK(adapter); 3623 return ((status & E1000_RXD_STAT_DD) ? TRUE : FALSE); 3624 } 3625 3626 #ifndef __NO_STRICT_ALIGNMENT 3627 /* 3628 * When jumbo frames are enabled we should realign entire payload on 3629 * architecures with strict alignment. This is serious design mistake of 8254x 3630 * as it nullifies DMA operations. 8254x just allows RX buffer size to be 3631 * 2048/4096/8192/16384. What we really want is 2048 - ETHER_ALIGN to align its 3632 * payload. On architecures without strict alignment restrictions 8254x still 3633 * performs unaligned memory access which would reduce the performance too. 3634 * To avoid copying over an entire frame to align, we allocate a new mbuf and 3635 * copy ethernet header to the new mbuf. The new mbuf is prepended into the 3636 * existing mbuf chain. 3637 * 3638 * Be aware, best performance of the 8254x is achived only when jumbo frame is 3639 * not used at all on architectures with strict alignment. 3640 */ 3641 static int 3642 lem_fixup_rx(struct adapter *adapter) 3643 { 3644 struct mbuf *m, *n; 3645 int error; 3646 3647 error = 0; 3648 m = adapter->fmp; 3649 if (m->m_len <= (MCLBYTES - ETHER_HDR_LEN)) { 3650 bcopy(m->m_data, m->m_data + ETHER_HDR_LEN, m->m_len); 3651 m->m_data += ETHER_HDR_LEN; 3652 } else { 3653 MGETHDR(n, M_NOWAIT, MT_DATA); 3654 if (n != NULL) { 3655 bcopy(m->m_data, n->m_data, ETHER_HDR_LEN); 3656 m->m_data += ETHER_HDR_LEN; 3657 m->m_len -= ETHER_HDR_LEN; 3658 n->m_len = ETHER_HDR_LEN; 3659 M_MOVE_PKTHDR(n, m); 3660 n->m_next = m; 3661 adapter->fmp = n; 3662 } else { 3663 adapter->dropped_pkts++; 3664 m_freem(adapter->fmp); 3665 adapter->fmp = NULL; 3666 error = ENOMEM; 3667 } 3668 } 3669 3670 return (error); 3671 } 3672 #endif 3673 3674 /********************************************************************* 3675 * 3676 * Verify that the hardware indicated that the checksum is valid. 3677 * Inform the stack about the status of checksum so that stack 3678 * doesn't spend time verifying the checksum. 3679 * 3680 *********************************************************************/ 3681 static void 3682 lem_receive_checksum(struct adapter *adapter, 3683 struct e1000_rx_desc *rx_desc, struct mbuf *mp) 3684 { 3685 /* 82543 or newer only */ 3686 if ((adapter->hw.mac.type < e1000_82543) || 3687 /* Ignore Checksum bit is set */ 3688 (rx_desc->status & E1000_RXD_STAT_IXSM)) { 3689 mp->m_pkthdr.csum_flags = 0; 3690 return; 3691 } 3692 3693 if (rx_desc->status & E1000_RXD_STAT_IPCS) { 3694 /* Did it pass? */ 3695 if (!(rx_desc->errors & E1000_RXD_ERR_IPE)) { 3696 /* IP Checksum Good */ 3697 mp->m_pkthdr.csum_flags = CSUM_IP_CHECKED; 3698 mp->m_pkthdr.csum_flags |= CSUM_IP_VALID; 3699 3700 } else { 3701 mp->m_pkthdr.csum_flags = 0; 3702 } 3703 } 3704 3705 if (rx_desc->status & E1000_RXD_STAT_TCPCS) { 3706 /* Did it pass? */ 3707 if (!(rx_desc->errors & E1000_RXD_ERR_TCPE)) { 3708 mp->m_pkthdr.csum_flags |= 3709 (CSUM_DATA_VALID | CSUM_PSEUDO_HDR); 3710 mp->m_pkthdr.csum_data = htons(0xffff); 3711 } 3712 } 3713 } 3714 3715 /* 3716 * This routine is run via an vlan 3717 * config EVENT 3718 */ 3719 static void 3720 lem_register_vlan(void *arg, struct ifnet *ifp, u16 vtag) 3721 { 3722 struct adapter *adapter = ifp->if_softc; 3723 u32 index, bit; 3724 3725 if (ifp->if_softc != arg) /* Not our event */ 3726 return; 3727 3728 if ((vtag == 0) || (vtag > 4095)) /* Invalid ID */ 3729 return; 3730 3731 EM_CORE_LOCK(adapter); 3732 index = (vtag >> 5) & 0x7F; 3733 bit = vtag & 0x1F; 3734 adapter->shadow_vfta[index] |= (1 << bit); 3735 ++adapter->num_vlans; 3736 /* Re-init to load the changes */ 3737 if (ifp->if_capenable & IFCAP_VLAN_HWFILTER) 3738 lem_init_locked(adapter); 3739 EM_CORE_UNLOCK(adapter); 3740 } 3741 3742 /* 3743 * This routine is run via an vlan 3744 * unconfig EVENT 3745 */ 3746 static void 3747 lem_unregister_vlan(void *arg, struct ifnet *ifp, u16 vtag) 3748 { 3749 struct adapter *adapter = ifp->if_softc; 3750 u32 index, bit; 3751 3752 if (ifp->if_softc != arg) 3753 return; 3754 3755 if ((vtag == 0) || (vtag > 4095)) /* Invalid */ 3756 return; 3757 3758 EM_CORE_LOCK(adapter); 3759 index = (vtag >> 5) & 0x7F; 3760 bit = vtag & 0x1F; 3761 adapter->shadow_vfta[index] &= ~(1 << bit); 3762 --adapter->num_vlans; 3763 /* Re-init to load the changes */ 3764 if (ifp->if_capenable & IFCAP_VLAN_HWFILTER) 3765 lem_init_locked(adapter); 3766 EM_CORE_UNLOCK(adapter); 3767 } 3768 3769 static void 3770 lem_setup_vlan_hw_support(struct adapter *adapter) 3771 { 3772 struct e1000_hw *hw = &adapter->hw; 3773 u32 reg; 3774 3775 /* 3776 ** We get here thru init_locked, meaning 3777 ** a soft reset, this has already cleared 3778 ** the VFTA and other state, so if there 3779 ** have been no vlan's registered do nothing. 3780 */ 3781 if (adapter->num_vlans == 0) 3782 return; 3783 3784 /* 3785 ** A soft reset zero's out the VFTA, so 3786 ** we need to repopulate it now. 3787 */ 3788 for (int i = 0; i < EM_VFTA_SIZE; i++) 3789 if (adapter->shadow_vfta[i] != 0) 3790 E1000_WRITE_REG_ARRAY(hw, E1000_VFTA, 3791 i, adapter->shadow_vfta[i]); 3792 3793 reg = E1000_READ_REG(hw, E1000_CTRL); 3794 reg |= E1000_CTRL_VME; 3795 E1000_WRITE_REG(hw, E1000_CTRL, reg); 3796 3797 /* Enable the Filter Table */ 3798 reg = E1000_READ_REG(hw, E1000_RCTL); 3799 reg &= ~E1000_RCTL_CFIEN; 3800 reg |= E1000_RCTL_VFE; 3801 E1000_WRITE_REG(hw, E1000_RCTL, reg); 3802 } 3803 3804 static void 3805 lem_enable_intr(struct adapter *adapter) 3806 { 3807 struct e1000_hw *hw = &adapter->hw; 3808 u32 ims_mask = IMS_ENABLE_MASK; 3809 3810 E1000_WRITE_REG(hw, E1000_IMS, ims_mask); 3811 } 3812 3813 static void 3814 lem_disable_intr(struct adapter *adapter) 3815 { 3816 struct e1000_hw *hw = &adapter->hw; 3817 3818 E1000_WRITE_REG(hw, E1000_IMC, 0xffffffff); 3819 } 3820 3821 /* 3822 * Bit of a misnomer, what this really means is 3823 * to enable OS management of the system... aka 3824 * to disable special hardware management features 3825 */ 3826 static void 3827 lem_init_manageability(struct adapter *adapter) 3828 { 3829 /* A shared code workaround */ 3830 if (adapter->has_manage) { 3831 int manc = E1000_READ_REG(&adapter->hw, E1000_MANC); 3832 /* disable hardware interception of ARP */ 3833 manc &= ~(E1000_MANC_ARP_EN); 3834 E1000_WRITE_REG(&adapter->hw, E1000_MANC, manc); 3835 } 3836 } 3837 3838 /* 3839 * Give control back to hardware management 3840 * controller if there is one. 3841 */ 3842 static void 3843 lem_release_manageability(struct adapter *adapter) 3844 { 3845 if (adapter->has_manage) { 3846 int manc = E1000_READ_REG(&adapter->hw, E1000_MANC); 3847 3848 /* re-enable hardware interception of ARP */ 3849 manc |= E1000_MANC_ARP_EN; 3850 E1000_WRITE_REG(&adapter->hw, E1000_MANC, manc); 3851 } 3852 } 3853 3854 /* 3855 * lem_get_hw_control sets the {CTRL_EXT|FWSM}:DRV_LOAD bit. 3856 * For ASF and Pass Through versions of f/w this means 3857 * that the driver is loaded. For AMT version type f/w 3858 * this means that the network i/f is open. 3859 */ 3860 static void 3861 lem_get_hw_control(struct adapter *adapter) 3862 { 3863 u32 ctrl_ext; 3864 3865 ctrl_ext = E1000_READ_REG(&adapter->hw, E1000_CTRL_EXT); 3866 E1000_WRITE_REG(&adapter->hw, E1000_CTRL_EXT, 3867 ctrl_ext | E1000_CTRL_EXT_DRV_LOAD); 3868 return; 3869 } 3870 3871 /* 3872 * lem_release_hw_control resets {CTRL_EXT|FWSM}:DRV_LOAD bit. 3873 * For ASF and Pass Through versions of f/w this means that 3874 * the driver is no longer loaded. For AMT versions of the 3875 * f/w this means that the network i/f is closed. 3876 */ 3877 static void 3878 lem_release_hw_control(struct adapter *adapter) 3879 { 3880 u32 ctrl_ext; 3881 3882 if (!adapter->has_manage) 3883 return; 3884 3885 ctrl_ext = E1000_READ_REG(&adapter->hw, E1000_CTRL_EXT); 3886 E1000_WRITE_REG(&adapter->hw, E1000_CTRL_EXT, 3887 ctrl_ext & ~E1000_CTRL_EXT_DRV_LOAD); 3888 return; 3889 } 3890 3891 static int 3892 lem_is_valid_ether_addr(u8 *addr) 3893 { 3894 char zero_addr[6] = { 0, 0, 0, 0, 0, 0 }; 3895 3896 if ((addr[0] & 1) || (!bcmp(addr, zero_addr, ETHER_ADDR_LEN))) { 3897 return (FALSE); 3898 } 3899 3900 return (TRUE); 3901 } 3902 3903 /* 3904 ** Parse the interface capabilities with regard 3905 ** to both system management and wake-on-lan for 3906 ** later use. 3907 */ 3908 static void 3909 lem_get_wakeup(device_t dev) 3910 { 3911 struct adapter *adapter = device_get_softc(dev); 3912 u16 eeprom_data = 0, device_id, apme_mask; 3913 3914 adapter->has_manage = e1000_enable_mng_pass_thru(&adapter->hw); 3915 apme_mask = EM_EEPROM_APME; 3916 3917 switch (adapter->hw.mac.type) { 3918 case e1000_82542: 3919 case e1000_82543: 3920 break; 3921 case e1000_82544: 3922 e1000_read_nvm(&adapter->hw, 3923 NVM_INIT_CONTROL2_REG, 1, &eeprom_data); 3924 apme_mask = EM_82544_APME; 3925 break; 3926 case e1000_82546: 3927 case e1000_82546_rev_3: 3928 if (adapter->hw.bus.func == 1) { 3929 e1000_read_nvm(&adapter->hw, 3930 NVM_INIT_CONTROL3_PORT_B, 1, &eeprom_data); 3931 break; 3932 } else 3933 e1000_read_nvm(&adapter->hw, 3934 NVM_INIT_CONTROL3_PORT_A, 1, &eeprom_data); 3935 break; 3936 default: 3937 e1000_read_nvm(&adapter->hw, 3938 NVM_INIT_CONTROL3_PORT_A, 1, &eeprom_data); 3939 break; 3940 } 3941 if (eeprom_data & apme_mask) 3942 adapter->wol = (E1000_WUFC_MAG | E1000_WUFC_MC); 3943 /* 3944 * We have the eeprom settings, now apply the special cases 3945 * where the eeprom may be wrong or the board won't support 3946 * wake on lan on a particular port 3947 */ 3948 device_id = pci_get_device(dev); 3949 switch (device_id) { 3950 case E1000_DEV_ID_82546GB_PCIE: 3951 adapter->wol = 0; 3952 break; 3953 case E1000_DEV_ID_82546EB_FIBER: 3954 case E1000_DEV_ID_82546GB_FIBER: 3955 /* Wake events only supported on port A for dual fiber 3956 * regardless of eeprom setting */ 3957 if (E1000_READ_REG(&adapter->hw, E1000_STATUS) & 3958 E1000_STATUS_FUNC_1) 3959 adapter->wol = 0; 3960 break; 3961 case E1000_DEV_ID_82546GB_QUAD_COPPER_KSP3: 3962 /* if quad port adapter, disable WoL on all but port A */ 3963 if (global_quad_port_a != 0) 3964 adapter->wol = 0; 3965 /* Reset for multiple quad port adapters */ 3966 if (++global_quad_port_a == 4) 3967 global_quad_port_a = 0; 3968 break; 3969 } 3970 return; 3971 } 3972 3973 3974 /* 3975 * Enable PCI Wake On Lan capability 3976 */ 3977 static void 3978 lem_enable_wakeup(device_t dev) 3979 { 3980 struct adapter *adapter = device_get_softc(dev); 3981 struct ifnet *ifp = adapter->ifp; 3982 u32 pmc, ctrl, ctrl_ext, rctl; 3983 u16 status; 3984 3985 if ((pci_find_cap(dev, PCIY_PMG, &pmc) != 0)) 3986 return; 3987 3988 /* Advertise the wakeup capability */ 3989 ctrl = E1000_READ_REG(&adapter->hw, E1000_CTRL); 3990 ctrl |= (E1000_CTRL_SWDPIN2 | E1000_CTRL_SWDPIN3); 3991 E1000_WRITE_REG(&adapter->hw, E1000_CTRL, ctrl); 3992 E1000_WRITE_REG(&adapter->hw, E1000_WUC, E1000_WUC_PME_EN); 3993 3994 /* Keep the laser running on Fiber adapters */ 3995 if (adapter->hw.phy.media_type == e1000_media_type_fiber || 3996 adapter->hw.phy.media_type == e1000_media_type_internal_serdes) { 3997 ctrl_ext = E1000_READ_REG(&adapter->hw, E1000_CTRL_EXT); 3998 ctrl_ext |= E1000_CTRL_EXT_SDP3_DATA; 3999 E1000_WRITE_REG(&adapter->hw, E1000_CTRL_EXT, ctrl_ext); 4000 } 4001 4002 /* 4003 ** Determine type of Wakeup: note that wol 4004 ** is set with all bits on by default. 4005 */ 4006 if ((ifp->if_capenable & IFCAP_WOL_MAGIC) == 0) 4007 adapter->wol &= ~E1000_WUFC_MAG; 4008 4009 if ((ifp->if_capenable & IFCAP_WOL_MCAST) == 0) 4010 adapter->wol &= ~E1000_WUFC_MC; 4011 else { 4012 rctl = E1000_READ_REG(&adapter->hw, E1000_RCTL); 4013 rctl |= E1000_RCTL_MPE; 4014 E1000_WRITE_REG(&adapter->hw, E1000_RCTL, rctl); 4015 } 4016 4017 if (adapter->hw.mac.type == e1000_pchlan) { 4018 if (lem_enable_phy_wakeup(adapter)) 4019 return; 4020 } else { 4021 E1000_WRITE_REG(&adapter->hw, E1000_WUC, E1000_WUC_PME_EN); 4022 E1000_WRITE_REG(&adapter->hw, E1000_WUFC, adapter->wol); 4023 } 4024 4025 4026 /* Request PME */ 4027 status = pci_read_config(dev, pmc + PCIR_POWER_STATUS, 2); 4028 status &= ~(PCIM_PSTAT_PME | PCIM_PSTAT_PMEENABLE); 4029 if (ifp->if_capenable & IFCAP_WOL) 4030 status |= PCIM_PSTAT_PME | PCIM_PSTAT_PMEENABLE; 4031 pci_write_config(dev, pmc + PCIR_POWER_STATUS, status, 2); 4032 4033 return; 4034 } 4035 4036 /* 4037 ** WOL in the newer chipset interfaces (pchlan) 4038 ** require thing to be copied into the phy 4039 */ 4040 static int 4041 lem_enable_phy_wakeup(struct adapter *adapter) 4042 { 4043 struct e1000_hw *hw = &adapter->hw; 4044 u32 mreg, ret = 0; 4045 u16 preg; 4046 4047 /* copy MAC RARs to PHY RARs */ 4048 for (int i = 0; i < adapter->hw.mac.rar_entry_count; i++) { 4049 mreg = E1000_READ_REG(hw, E1000_RAL(i)); 4050 e1000_write_phy_reg(hw, BM_RAR_L(i), (u16)(mreg & 0xFFFF)); 4051 e1000_write_phy_reg(hw, BM_RAR_M(i), 4052 (u16)((mreg >> 16) & 0xFFFF)); 4053 mreg = E1000_READ_REG(hw, E1000_RAH(i)); 4054 e1000_write_phy_reg(hw, BM_RAR_H(i), (u16)(mreg & 0xFFFF)); 4055 e1000_write_phy_reg(hw, BM_RAR_CTRL(i), 4056 (u16)((mreg >> 16) & 0xFFFF)); 4057 } 4058 4059 /* copy MAC MTA to PHY MTA */ 4060 for (int i = 0; i < adapter->hw.mac.mta_reg_count; i++) { 4061 mreg = E1000_READ_REG_ARRAY(hw, E1000_MTA, i); 4062 e1000_write_phy_reg(hw, BM_MTA(i), (u16)(mreg & 0xFFFF)); 4063 e1000_write_phy_reg(hw, BM_MTA(i) + 1, 4064 (u16)((mreg >> 16) & 0xFFFF)); 4065 } 4066 4067 /* configure PHY Rx Control register */ 4068 e1000_read_phy_reg(&adapter->hw, BM_RCTL, &preg); 4069 mreg = E1000_READ_REG(hw, E1000_RCTL); 4070 if (mreg & E1000_RCTL_UPE) 4071 preg |= BM_RCTL_UPE; 4072 if (mreg & E1000_RCTL_MPE) 4073 preg |= BM_RCTL_MPE; 4074 preg &= ~(BM_RCTL_MO_MASK); 4075 if (mreg & E1000_RCTL_MO_3) 4076 preg |= (((mreg & E1000_RCTL_MO_3) >> E1000_RCTL_MO_SHIFT) 4077 << BM_RCTL_MO_SHIFT); 4078 if (mreg & E1000_RCTL_BAM) 4079 preg |= BM_RCTL_BAM; 4080 if (mreg & E1000_RCTL_PMCF) 4081 preg |= BM_RCTL_PMCF; 4082 mreg = E1000_READ_REG(hw, E1000_CTRL); 4083 if (mreg & E1000_CTRL_RFCE) 4084 preg |= BM_RCTL_RFCE; 4085 e1000_write_phy_reg(&adapter->hw, BM_RCTL, preg); 4086 4087 /* enable PHY wakeup in MAC register */ 4088 E1000_WRITE_REG(hw, E1000_WUC, 4089 E1000_WUC_PHY_WAKE | E1000_WUC_PME_EN); 4090 E1000_WRITE_REG(hw, E1000_WUFC, adapter->wol); 4091 4092 /* configure and enable PHY wakeup in PHY registers */ 4093 e1000_write_phy_reg(&adapter->hw, BM_WUFC, adapter->wol); 4094 e1000_write_phy_reg(&adapter->hw, BM_WUC, E1000_WUC_PME_EN); 4095 4096 /* activate PHY wakeup */ 4097 ret = hw->phy.ops.acquire(hw); 4098 if (ret) { 4099 printf("Could not acquire PHY\n"); 4100 return ret; 4101 } 4102 e1000_write_phy_reg_mdic(hw, IGP01E1000_PHY_PAGE_SELECT, 4103 (BM_WUC_ENABLE_PAGE << IGP_PAGE_SHIFT)); 4104 ret = e1000_read_phy_reg_mdic(hw, BM_WUC_ENABLE_REG, &preg); 4105 if (ret) { 4106 printf("Could not read PHY page 769\n"); 4107 goto out; 4108 } 4109 preg |= BM_WUC_ENABLE_BIT | BM_WUC_HOST_WU_BIT; 4110 ret = e1000_write_phy_reg_mdic(hw, BM_WUC_ENABLE_REG, preg); 4111 if (ret) 4112 printf("Could not set PHY Host Wakeup bit\n"); 4113 out: 4114 hw->phy.ops.release(hw); 4115 4116 return ret; 4117 } 4118 4119 static void 4120 lem_led_func(void *arg, int onoff) 4121 { 4122 struct adapter *adapter = arg; 4123 4124 EM_CORE_LOCK(adapter); 4125 if (onoff) { 4126 e1000_setup_led(&adapter->hw); 4127 e1000_led_on(&adapter->hw); 4128 } else { 4129 e1000_led_off(&adapter->hw); 4130 e1000_cleanup_led(&adapter->hw); 4131 } 4132 EM_CORE_UNLOCK(adapter); 4133 } 4134 4135 /********************************************************************* 4136 * 82544 Coexistence issue workaround. 4137 * There are 2 issues. 4138 * 1. Transmit Hang issue. 4139 * To detect this issue, following equation can be used... 4140 * SIZE[3:0] + ADDR[2:0] = SUM[3:0]. 4141 * If SUM[3:0] is in between 1 to 4, we will have this issue. 4142 * 4143 * 2. DAC issue. 4144 * To detect this issue, following equation can be used... 4145 * SIZE[3:0] + ADDR[2:0] = SUM[3:0]. 4146 * If SUM[3:0] is in between 9 to c, we will have this issue. 4147 * 4148 * 4149 * WORKAROUND: 4150 * Make sure we do not have ending address 4151 * as 1,2,3,4(Hang) or 9,a,b,c (DAC) 4152 * 4153 *************************************************************************/ 4154 static u32 4155 lem_fill_descriptors (bus_addr_t address, u32 length, 4156 PDESC_ARRAY desc_array) 4157 { 4158 u32 safe_terminator; 4159 4160 /* Since issue is sensitive to length and address.*/ 4161 /* Let us first check the address...*/ 4162 if (length <= 4) { 4163 desc_array->descriptor[0].address = address; 4164 desc_array->descriptor[0].length = length; 4165 desc_array->elements = 1; 4166 return (desc_array->elements); 4167 } 4168 safe_terminator = (u32)((((u32)address & 0x7) + 4169 (length & 0xF)) & 0xF); 4170 /* if it does not fall between 0x1 to 0x4 and 0x9 to 0xC then return */ 4171 if (safe_terminator == 0 || 4172 (safe_terminator > 4 && 4173 safe_terminator < 9) || 4174 (safe_terminator > 0xC && 4175 safe_terminator <= 0xF)) { 4176 desc_array->descriptor[0].address = address; 4177 desc_array->descriptor[0].length = length; 4178 desc_array->elements = 1; 4179 return (desc_array->elements); 4180 } 4181 4182 desc_array->descriptor[0].address = address; 4183 desc_array->descriptor[0].length = length - 4; 4184 desc_array->descriptor[1].address = address + (length - 4); 4185 desc_array->descriptor[1].length = 4; 4186 desc_array->elements = 2; 4187 return (desc_array->elements); 4188 } 4189 4190 /********************************************************************** 4191 * 4192 * Update the board statistics counters. 4193 * 4194 **********************************************************************/ 4195 static void 4196 lem_update_stats_counters(struct adapter *adapter) 4197 { 4198 struct ifnet *ifp; 4199 4200 if(adapter->hw.phy.media_type == e1000_media_type_copper || 4201 (E1000_READ_REG(&adapter->hw, E1000_STATUS) & E1000_STATUS_LU)) { 4202 adapter->stats.symerrs += E1000_READ_REG(&adapter->hw, E1000_SYMERRS); 4203 adapter->stats.sec += E1000_READ_REG(&adapter->hw, E1000_SEC); 4204 } 4205 adapter->stats.crcerrs += E1000_READ_REG(&adapter->hw, E1000_CRCERRS); 4206 adapter->stats.mpc += E1000_READ_REG(&adapter->hw, E1000_MPC); 4207 adapter->stats.scc += E1000_READ_REG(&adapter->hw, E1000_SCC); 4208 adapter->stats.ecol += E1000_READ_REG(&adapter->hw, E1000_ECOL); 4209 4210 adapter->stats.mcc += E1000_READ_REG(&adapter->hw, E1000_MCC); 4211 adapter->stats.latecol += E1000_READ_REG(&adapter->hw, E1000_LATECOL); 4212 adapter->stats.colc += E1000_READ_REG(&adapter->hw, E1000_COLC); 4213 adapter->stats.dc += E1000_READ_REG(&adapter->hw, E1000_DC); 4214 adapter->stats.rlec += E1000_READ_REG(&adapter->hw, E1000_RLEC); 4215 adapter->stats.xonrxc += E1000_READ_REG(&adapter->hw, E1000_XONRXC); 4216 adapter->stats.xontxc += E1000_READ_REG(&adapter->hw, E1000_XONTXC); 4217 adapter->stats.xoffrxc += E1000_READ_REG(&adapter->hw, E1000_XOFFRXC); 4218 adapter->stats.xofftxc += E1000_READ_REG(&adapter->hw, E1000_XOFFTXC); 4219 adapter->stats.fcruc += E1000_READ_REG(&adapter->hw, E1000_FCRUC); 4220 adapter->stats.prc64 += E1000_READ_REG(&adapter->hw, E1000_PRC64); 4221 adapter->stats.prc127 += E1000_READ_REG(&adapter->hw, E1000_PRC127); 4222 adapter->stats.prc255 += E1000_READ_REG(&adapter->hw, E1000_PRC255); 4223 adapter->stats.prc511 += E1000_READ_REG(&adapter->hw, E1000_PRC511); 4224 adapter->stats.prc1023 += E1000_READ_REG(&adapter->hw, E1000_PRC1023); 4225 adapter->stats.prc1522 += E1000_READ_REG(&adapter->hw, E1000_PRC1522); 4226 adapter->stats.gprc += E1000_READ_REG(&adapter->hw, E1000_GPRC); 4227 adapter->stats.bprc += E1000_READ_REG(&adapter->hw, E1000_BPRC); 4228 adapter->stats.mprc += E1000_READ_REG(&adapter->hw, E1000_MPRC); 4229 adapter->stats.gptc += E1000_READ_REG(&adapter->hw, E1000_GPTC); 4230 4231 /* For the 64-bit byte counters the low dword must be read first. */ 4232 /* Both registers clear on the read of the high dword */ 4233 4234 adapter->stats.gorc += E1000_READ_REG(&adapter->hw, E1000_GORCL) + 4235 ((u64)E1000_READ_REG(&adapter->hw, E1000_GORCH) << 32); 4236 adapter->stats.gotc += E1000_READ_REG(&adapter->hw, E1000_GOTCL) + 4237 ((u64)E1000_READ_REG(&adapter->hw, E1000_GOTCH) << 32); 4238 4239 adapter->stats.rnbc += E1000_READ_REG(&adapter->hw, E1000_RNBC); 4240 adapter->stats.ruc += E1000_READ_REG(&adapter->hw, E1000_RUC); 4241 adapter->stats.rfc += E1000_READ_REG(&adapter->hw, E1000_RFC); 4242 adapter->stats.roc += E1000_READ_REG(&adapter->hw, E1000_ROC); 4243 adapter->stats.rjc += E1000_READ_REG(&adapter->hw, E1000_RJC); 4244 4245 adapter->stats.tor += E1000_READ_REG(&adapter->hw, E1000_TORH); 4246 adapter->stats.tot += E1000_READ_REG(&adapter->hw, E1000_TOTH); 4247 4248 adapter->stats.tpr += E1000_READ_REG(&adapter->hw, E1000_TPR); 4249 adapter->stats.tpt += E1000_READ_REG(&adapter->hw, E1000_TPT); 4250 adapter->stats.ptc64 += E1000_READ_REG(&adapter->hw, E1000_PTC64); 4251 adapter->stats.ptc127 += E1000_READ_REG(&adapter->hw, E1000_PTC127); 4252 adapter->stats.ptc255 += E1000_READ_REG(&adapter->hw, E1000_PTC255); 4253 adapter->stats.ptc511 += E1000_READ_REG(&adapter->hw, E1000_PTC511); 4254 adapter->stats.ptc1023 += E1000_READ_REG(&adapter->hw, E1000_PTC1023); 4255 adapter->stats.ptc1522 += E1000_READ_REG(&adapter->hw, E1000_PTC1522); 4256 adapter->stats.mptc += E1000_READ_REG(&adapter->hw, E1000_MPTC); 4257 adapter->stats.bptc += E1000_READ_REG(&adapter->hw, E1000_BPTC); 4258 4259 if (adapter->hw.mac.type >= e1000_82543) { 4260 adapter->stats.algnerrc += 4261 E1000_READ_REG(&adapter->hw, E1000_ALGNERRC); 4262 adapter->stats.rxerrc += 4263 E1000_READ_REG(&adapter->hw, E1000_RXERRC); 4264 adapter->stats.tncrs += 4265 E1000_READ_REG(&adapter->hw, E1000_TNCRS); 4266 adapter->stats.cexterr += 4267 E1000_READ_REG(&adapter->hw, E1000_CEXTERR); 4268 adapter->stats.tsctc += 4269 E1000_READ_REG(&adapter->hw, E1000_TSCTC); 4270 adapter->stats.tsctfc += 4271 E1000_READ_REG(&adapter->hw, E1000_TSCTFC); 4272 } 4273 ifp = adapter->ifp; 4274 4275 ifp->if_collisions = adapter->stats.colc; 4276 4277 /* Rx Errors */ 4278 ifp->if_ierrors = adapter->dropped_pkts + adapter->stats.rxerrc + 4279 adapter->stats.crcerrs + adapter->stats.algnerrc + 4280 adapter->stats.ruc + adapter->stats.roc + 4281 adapter->stats.mpc + adapter->stats.cexterr; 4282 4283 /* Tx Errors */ 4284 ifp->if_oerrors = adapter->stats.ecol + 4285 adapter->stats.latecol + adapter->watchdog_events; 4286 } 4287 4288 /* Export a single 32-bit register via a read-only sysctl. */ 4289 static int 4290 lem_sysctl_reg_handler(SYSCTL_HANDLER_ARGS) 4291 { 4292 struct adapter *adapter; 4293 u_int val; 4294 4295 adapter = oidp->oid_arg1; 4296 val = E1000_READ_REG(&adapter->hw, oidp->oid_arg2); 4297 return (sysctl_handle_int(oidp, &val, 0, req)); 4298 } 4299 4300 /* 4301 * Add sysctl variables, one per statistic, to the system. 4302 */ 4303 static void 4304 lem_add_hw_stats(struct adapter *adapter) 4305 { 4306 device_t dev = adapter->dev; 4307 4308 struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(dev); 4309 struct sysctl_oid *tree = device_get_sysctl_tree(dev); 4310 struct sysctl_oid_list *child = SYSCTL_CHILDREN(tree); 4311 struct e1000_hw_stats *stats = &adapter->stats; 4312 4313 struct sysctl_oid *stat_node; 4314 struct sysctl_oid_list *stat_list; 4315 4316 /* Driver Statistics */ 4317 SYSCTL_ADD_ULONG(ctx, child, OID_AUTO, "mbuf_alloc_fail", 4318 CTLFLAG_RD, &adapter->mbuf_alloc_failed, 4319 "Std mbuf failed"); 4320 SYSCTL_ADD_ULONG(ctx, child, OID_AUTO, "cluster_alloc_fail", 4321 CTLFLAG_RD, &adapter->mbuf_cluster_failed, 4322 "Std mbuf cluster failed"); 4323 SYSCTL_ADD_ULONG(ctx, child, OID_AUTO, "dropped", 4324 CTLFLAG_RD, &adapter->dropped_pkts, 4325 "Driver dropped packets"); 4326 SYSCTL_ADD_ULONG(ctx, child, OID_AUTO, "tx_dma_fail", 4327 CTLFLAG_RD, &adapter->no_tx_dma_setup, 4328 "Driver tx dma failure in xmit"); 4329 SYSCTL_ADD_ULONG(ctx, child, OID_AUTO, "tx_desc_fail1", 4330 CTLFLAG_RD, &adapter->no_tx_desc_avail1, 4331 "Not enough tx descriptors failure in xmit"); 4332 SYSCTL_ADD_ULONG(ctx, child, OID_AUTO, "tx_desc_fail2", 4333 CTLFLAG_RD, &adapter->no_tx_desc_avail2, 4334 "Not enough tx descriptors failure in xmit"); 4335 SYSCTL_ADD_ULONG(ctx, child, OID_AUTO, "rx_overruns", 4336 CTLFLAG_RD, &adapter->rx_overruns, 4337 "RX overruns"); 4338 SYSCTL_ADD_ULONG(ctx, child, OID_AUTO, "watchdog_timeouts", 4339 CTLFLAG_RD, &adapter->watchdog_events, 4340 "Watchdog timeouts"); 4341 4342 SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "device_control", 4343 CTLTYPE_UINT | CTLFLAG_RD, adapter, E1000_CTRL, 4344 lem_sysctl_reg_handler, "IU", 4345 "Device Control Register"); 4346 SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "rx_control", 4347 CTLTYPE_UINT | CTLFLAG_RD, adapter, E1000_RCTL, 4348 lem_sysctl_reg_handler, "IU", 4349 "Receiver Control Register"); 4350 SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "fc_high_water", 4351 CTLFLAG_RD, &adapter->hw.fc.high_water, 0, 4352 "Flow Control High Watermark"); 4353 SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "fc_low_water", 4354 CTLFLAG_RD, &adapter->hw.fc.low_water, 0, 4355 "Flow Control Low Watermark"); 4356 SYSCTL_ADD_UQUAD(ctx, child, OID_AUTO, "fifo_workaround", 4357 CTLFLAG_RD, &adapter->tx_fifo_wrk_cnt, 4358 "TX FIFO workaround events"); 4359 SYSCTL_ADD_UQUAD(ctx, child, OID_AUTO, "fifo_reset", 4360 CTLFLAG_RD, &adapter->tx_fifo_reset_cnt, 4361 "TX FIFO resets"); 4362 4363 SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "txd_head", 4364 CTLTYPE_UINT | CTLFLAG_RD, adapter, E1000_TDH(0), 4365 lem_sysctl_reg_handler, "IU", 4366 "Transmit Descriptor Head"); 4367 SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "txd_tail", 4368 CTLTYPE_UINT | CTLFLAG_RD, adapter, E1000_TDT(0), 4369 lem_sysctl_reg_handler, "IU", 4370 "Transmit Descriptor Tail"); 4371 SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "rxd_head", 4372 CTLTYPE_UINT | CTLFLAG_RD, adapter, E1000_RDH(0), 4373 lem_sysctl_reg_handler, "IU", 4374 "Receive Descriptor Head"); 4375 SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "rxd_tail", 4376 CTLTYPE_UINT | CTLFLAG_RD, adapter, E1000_RDT(0), 4377 lem_sysctl_reg_handler, "IU", 4378 "Receive Descriptor Tail"); 4379 4380 4381 /* MAC stats get their own sub node */ 4382 4383 stat_node = SYSCTL_ADD_NODE(ctx, child, OID_AUTO, "mac_stats", 4384 CTLFLAG_RD, NULL, "Statistics"); 4385 stat_list = SYSCTL_CHILDREN(stat_node); 4386 4387 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "excess_coll", 4388 CTLFLAG_RD, &stats->ecol, 4389 "Excessive collisions"); 4390 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "single_coll", 4391 CTLFLAG_RD, &stats->scc, 4392 "Single collisions"); 4393 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "multiple_coll", 4394 CTLFLAG_RD, &stats->mcc, 4395 "Multiple collisions"); 4396 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "late_coll", 4397 CTLFLAG_RD, &stats->latecol, 4398 "Late collisions"); 4399 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "collision_count", 4400 CTLFLAG_RD, &stats->colc, 4401 "Collision Count"); 4402 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "symbol_errors", 4403 CTLFLAG_RD, &adapter->stats.symerrs, 4404 "Symbol Errors"); 4405 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "sequence_errors", 4406 CTLFLAG_RD, &adapter->stats.sec, 4407 "Sequence Errors"); 4408 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "defer_count", 4409 CTLFLAG_RD, &adapter->stats.dc, 4410 "Defer Count"); 4411 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "missed_packets", 4412 CTLFLAG_RD, &adapter->stats.mpc, 4413 "Missed Packets"); 4414 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "recv_no_buff", 4415 CTLFLAG_RD, &adapter->stats.rnbc, 4416 "Receive No Buffers"); 4417 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "recv_undersize", 4418 CTLFLAG_RD, &adapter->stats.ruc, 4419 "Receive Undersize"); 4420 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "recv_fragmented", 4421 CTLFLAG_RD, &adapter->stats.rfc, 4422 "Fragmented Packets Received "); 4423 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "recv_oversize", 4424 CTLFLAG_RD, &adapter->stats.roc, 4425 "Oversized Packets Received"); 4426 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "recv_jabber", 4427 CTLFLAG_RD, &adapter->stats.rjc, 4428 "Recevied Jabber"); 4429 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "recv_errs", 4430 CTLFLAG_RD, &adapter->stats.rxerrc, 4431 "Receive Errors"); 4432 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "crc_errs", 4433 CTLFLAG_RD, &adapter->stats.crcerrs, 4434 "CRC errors"); 4435 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "alignment_errs", 4436 CTLFLAG_RD, &adapter->stats.algnerrc, 4437 "Alignment Errors"); 4438 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "coll_ext_errs", 4439 CTLFLAG_RD, &adapter->stats.cexterr, 4440 "Collision/Carrier extension errors"); 4441 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "xon_recvd", 4442 CTLFLAG_RD, &adapter->stats.xonrxc, 4443 "XON Received"); 4444 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "xon_txd", 4445 CTLFLAG_RD, &adapter->stats.xontxc, 4446 "XON Transmitted"); 4447 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "xoff_recvd", 4448 CTLFLAG_RD, &adapter->stats.xoffrxc, 4449 "XOFF Received"); 4450 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "xoff_txd", 4451 CTLFLAG_RD, &adapter->stats.xofftxc, 4452 "XOFF Transmitted"); 4453 4454 /* Packet Reception Stats */ 4455 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "total_pkts_recvd", 4456 CTLFLAG_RD, &adapter->stats.tpr, 4457 "Total Packets Received "); 4458 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "good_pkts_recvd", 4459 CTLFLAG_RD, &adapter->stats.gprc, 4460 "Good Packets Received"); 4461 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "bcast_pkts_recvd", 4462 CTLFLAG_RD, &adapter->stats.bprc, 4463 "Broadcast Packets Received"); 4464 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "mcast_pkts_recvd", 4465 CTLFLAG_RD, &adapter->stats.mprc, 4466 "Multicast Packets Received"); 4467 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "rx_frames_64", 4468 CTLFLAG_RD, &adapter->stats.prc64, 4469 "64 byte frames received "); 4470 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "rx_frames_65_127", 4471 CTLFLAG_RD, &adapter->stats.prc127, 4472 "65-127 byte frames received"); 4473 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "rx_frames_128_255", 4474 CTLFLAG_RD, &adapter->stats.prc255, 4475 "128-255 byte frames received"); 4476 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "rx_frames_256_511", 4477 CTLFLAG_RD, &adapter->stats.prc511, 4478 "256-511 byte frames received"); 4479 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "rx_frames_512_1023", 4480 CTLFLAG_RD, &adapter->stats.prc1023, 4481 "512-1023 byte frames received"); 4482 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "rx_frames_1024_1522", 4483 CTLFLAG_RD, &adapter->stats.prc1522, 4484 "1023-1522 byte frames received"); 4485 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "good_octets_recvd", 4486 CTLFLAG_RD, &adapter->stats.gorc, 4487 "Good Octets Received"); 4488 4489 /* Packet Transmission Stats */ 4490 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "good_octets_txd", 4491 CTLFLAG_RD, &adapter->stats.gotc, 4492 "Good Octets Transmitted"); 4493 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "total_pkts_txd", 4494 CTLFLAG_RD, &adapter->stats.tpt, 4495 "Total Packets Transmitted"); 4496 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "good_pkts_txd", 4497 CTLFLAG_RD, &adapter->stats.gptc, 4498 "Good Packets Transmitted"); 4499 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "bcast_pkts_txd", 4500 CTLFLAG_RD, &adapter->stats.bptc, 4501 "Broadcast Packets Transmitted"); 4502 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "mcast_pkts_txd", 4503 CTLFLAG_RD, &adapter->stats.mptc, 4504 "Multicast Packets Transmitted"); 4505 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "tx_frames_64", 4506 CTLFLAG_RD, &adapter->stats.ptc64, 4507 "64 byte frames transmitted "); 4508 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "tx_frames_65_127", 4509 CTLFLAG_RD, &adapter->stats.ptc127, 4510 "65-127 byte frames transmitted"); 4511 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "tx_frames_128_255", 4512 CTLFLAG_RD, &adapter->stats.ptc255, 4513 "128-255 byte frames transmitted"); 4514 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "tx_frames_256_511", 4515 CTLFLAG_RD, &adapter->stats.ptc511, 4516 "256-511 byte frames transmitted"); 4517 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "tx_frames_512_1023", 4518 CTLFLAG_RD, &adapter->stats.ptc1023, 4519 "512-1023 byte frames transmitted"); 4520 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "tx_frames_1024_1522", 4521 CTLFLAG_RD, &adapter->stats.ptc1522, 4522 "1024-1522 byte frames transmitted"); 4523 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "tso_txd", 4524 CTLFLAG_RD, &adapter->stats.tsctc, 4525 "TSO Contexts Transmitted"); 4526 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "tso_ctx_fail", 4527 CTLFLAG_RD, &adapter->stats.tsctfc, 4528 "TSO Contexts Failed"); 4529 } 4530 4531 /********************************************************************** 4532 * 4533 * This routine provides a way to dump out the adapter eeprom, 4534 * often a useful debug/service tool. This only dumps the first 4535 * 32 words, stuff that matters is in that extent. 4536 * 4537 **********************************************************************/ 4538 4539 static int 4540 lem_sysctl_nvm_info(SYSCTL_HANDLER_ARGS) 4541 { 4542 struct adapter *adapter; 4543 int error; 4544 int result; 4545 4546 result = -1; 4547 error = sysctl_handle_int(oidp, &result, 0, req); 4548 4549 if (error || !req->newptr) 4550 return (error); 4551 4552 /* 4553 * This value will cause a hex dump of the 4554 * first 32 16-bit words of the EEPROM to 4555 * the screen. 4556 */ 4557 if (result == 1) { 4558 adapter = (struct adapter *)arg1; 4559 lem_print_nvm_info(adapter); 4560 } 4561 4562 return (error); 4563 } 4564 4565 static void 4566 lem_print_nvm_info(struct adapter *adapter) 4567 { 4568 u16 eeprom_data; 4569 int i, j, row = 0; 4570 4571 /* Its a bit crude, but it gets the job done */ 4572 printf("\nInterface EEPROM Dump:\n"); 4573 printf("Offset\n0x0000 "); 4574 for (i = 0, j = 0; i < 32; i++, j++) { 4575 if (j == 8) { /* Make the offset block */ 4576 j = 0; ++row; 4577 printf("\n0x00%x0 ",row); 4578 } 4579 e1000_read_nvm(&adapter->hw, i, 1, &eeprom_data); 4580 printf("%04x ", eeprom_data); 4581 } 4582 printf("\n"); 4583 } 4584 4585 static int 4586 lem_sysctl_int_delay(SYSCTL_HANDLER_ARGS) 4587 { 4588 struct em_int_delay_info *info; 4589 struct adapter *adapter; 4590 u32 regval; 4591 int error; 4592 int usecs; 4593 int ticks; 4594 4595 info = (struct em_int_delay_info *)arg1; 4596 usecs = info->value; 4597 error = sysctl_handle_int(oidp, &usecs, 0, req); 4598 if (error != 0 || req->newptr == NULL) 4599 return (error); 4600 if (usecs < 0 || usecs > EM_TICKS_TO_USECS(65535)) 4601 return (EINVAL); 4602 info->value = usecs; 4603 ticks = EM_USECS_TO_TICKS(usecs); 4604 if (info->offset == E1000_ITR) /* units are 256ns here */ 4605 ticks *= 4; 4606 4607 adapter = info->adapter; 4608 4609 EM_CORE_LOCK(adapter); 4610 regval = E1000_READ_OFFSET(&adapter->hw, info->offset); 4611 regval = (regval & ~0xffff) | (ticks & 0xffff); 4612 /* Handle a few special cases. */ 4613 switch (info->offset) { 4614 case E1000_RDTR: 4615 break; 4616 case E1000_TIDV: 4617 if (ticks == 0) { 4618 adapter->txd_cmd &= ~E1000_TXD_CMD_IDE; 4619 /* Don't write 0 into the TIDV register. */ 4620 regval++; 4621 } else 4622 adapter->txd_cmd |= E1000_TXD_CMD_IDE; 4623 break; 4624 } 4625 E1000_WRITE_OFFSET(&adapter->hw, info->offset, regval); 4626 EM_CORE_UNLOCK(adapter); 4627 return (0); 4628 } 4629 4630 static void 4631 lem_add_int_delay_sysctl(struct adapter *adapter, const char *name, 4632 const char *description, struct em_int_delay_info *info, 4633 int offset, int value) 4634 { 4635 info->adapter = adapter; 4636 info->offset = offset; 4637 info->value = value; 4638 SYSCTL_ADD_PROC(device_get_sysctl_ctx(adapter->dev), 4639 SYSCTL_CHILDREN(device_get_sysctl_tree(adapter->dev)), 4640 OID_AUTO, name, CTLTYPE_INT|CTLFLAG_RW, 4641 info, 0, lem_sysctl_int_delay, "I", description); 4642 } 4643 4644 static void 4645 lem_set_flow_cntrl(struct adapter *adapter, const char *name, 4646 const char *description, int *limit, int value) 4647 { 4648 *limit = value; 4649 SYSCTL_ADD_INT(device_get_sysctl_ctx(adapter->dev), 4650 SYSCTL_CHILDREN(device_get_sysctl_tree(adapter->dev)), 4651 OID_AUTO, name, CTLFLAG_RW, limit, value, description); 4652 } 4653 4654 static void 4655 lem_add_rx_process_limit(struct adapter *adapter, const char *name, 4656 const char *description, int *limit, int value) 4657 { 4658 *limit = value; 4659 SYSCTL_ADD_INT(device_get_sysctl_ctx(adapter->dev), 4660 SYSCTL_CHILDREN(device_get_sysctl_tree(adapter->dev)), 4661 OID_AUTO, name, CTLFLAG_RW, limit, value, description); 4662 }
Cache object: 18ec653966c30257d9f8d6f7d4a46172
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