if_em.c revision 262151
1/****************************************************************************** 2 3 Copyright (c) 2001-2013, 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: stable/10/sys/dev/e1000/if_em.c 262151 2014-02-18 05:01:04Z luigi $*/ 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#if __FreeBSD_version >= 800000 45#include <sys/buf_ring.h> 46#endif 47#include <sys/bus.h> 48#include <sys/endian.h> 49#include <sys/kernel.h> 50#include <sys/kthread.h> 51#include <sys/malloc.h> 52#include <sys/mbuf.h> 53#include <sys/module.h> 54#include <sys/rman.h> 55#include <sys/socket.h> 56#include <sys/sockio.h> 57#include <sys/sysctl.h> 58#include <sys/taskqueue.h> 59#include <sys/eventhandler.h> 60#include <machine/bus.h> 61#include <machine/resource.h> 62 63#include <net/bpf.h> 64#include <net/ethernet.h> 65#include <net/if.h> 66#include <net/if_arp.h> 67#include <net/if_dl.h> 68#include <net/if_media.h> 69 70#include <net/if_types.h> 71#include <net/if_vlan_var.h> 72 73#include <netinet/in_systm.h> 74#include <netinet/in.h> 75#include <netinet/if_ether.h> 76#include <netinet/ip.h> 77#include <netinet/ip6.h> 78#include <netinet/tcp.h> 79#include <netinet/udp.h> 80 81#include <machine/in_cksum.h> 82#include <dev/led/led.h> 83#include <dev/pci/pcivar.h> 84#include <dev/pci/pcireg.h> 85 86#include "e1000_api.h" 87#include "e1000_82571.h" 88#include "if_em.h" 89 90/********************************************************************* 91 * Set this to one to display debug statistics 92 *********************************************************************/ 93int em_display_debug_stats = 0; 94 95/********************************************************************* 96 * Driver version: 97 *********************************************************************/ 98char em_driver_version[] = "7.3.8"; 99 100/********************************************************************* 101 * PCI Device ID Table 102 * 103 * Used by probe to select devices to load on 104 * Last field stores an index into e1000_strings 105 * Last entry must be all 0s 106 * 107 * { Vendor ID, Device ID, SubVendor ID, SubDevice ID, String Index } 108 *********************************************************************/ 109 110static em_vendor_info_t em_vendor_info_array[] = 111{ 112 /* Intel(R) PRO/1000 Network Connection */ 113 { 0x8086, E1000_DEV_ID_82571EB_COPPER, PCI_ANY_ID, PCI_ANY_ID, 0}, 114 { 0x8086, E1000_DEV_ID_82571EB_FIBER, PCI_ANY_ID, PCI_ANY_ID, 0}, 115 { 0x8086, E1000_DEV_ID_82571EB_SERDES, PCI_ANY_ID, PCI_ANY_ID, 0}, 116 { 0x8086, E1000_DEV_ID_82571EB_SERDES_DUAL, 117 PCI_ANY_ID, PCI_ANY_ID, 0}, 118 { 0x8086, E1000_DEV_ID_82571EB_SERDES_QUAD, 119 PCI_ANY_ID, PCI_ANY_ID, 0}, 120 { 0x8086, E1000_DEV_ID_82571EB_QUAD_COPPER, 121 PCI_ANY_ID, PCI_ANY_ID, 0}, 122 { 0x8086, E1000_DEV_ID_82571EB_QUAD_COPPER_LP, 123 PCI_ANY_ID, PCI_ANY_ID, 0}, 124 { 0x8086, E1000_DEV_ID_82571EB_QUAD_FIBER, 125 PCI_ANY_ID, PCI_ANY_ID, 0}, 126 { 0x8086, E1000_DEV_ID_82571PT_QUAD_COPPER, 127 PCI_ANY_ID, PCI_ANY_ID, 0}, 128 { 0x8086, E1000_DEV_ID_82572EI_COPPER, PCI_ANY_ID, PCI_ANY_ID, 0}, 129 { 0x8086, E1000_DEV_ID_82572EI_FIBER, PCI_ANY_ID, PCI_ANY_ID, 0}, 130 { 0x8086, E1000_DEV_ID_82572EI_SERDES, PCI_ANY_ID, PCI_ANY_ID, 0}, 131 { 0x8086, E1000_DEV_ID_82572EI, PCI_ANY_ID, PCI_ANY_ID, 0}, 132 133 { 0x8086, E1000_DEV_ID_82573E, PCI_ANY_ID, PCI_ANY_ID, 0}, 134 { 0x8086, E1000_DEV_ID_82573E_IAMT, PCI_ANY_ID, PCI_ANY_ID, 0}, 135 { 0x8086, E1000_DEV_ID_82573L, PCI_ANY_ID, PCI_ANY_ID, 0}, 136 { 0x8086, E1000_DEV_ID_82583V, PCI_ANY_ID, PCI_ANY_ID, 0}, 137 { 0x8086, E1000_DEV_ID_80003ES2LAN_COPPER_SPT, 138 PCI_ANY_ID, PCI_ANY_ID, 0}, 139 { 0x8086, E1000_DEV_ID_80003ES2LAN_SERDES_SPT, 140 PCI_ANY_ID, PCI_ANY_ID, 0}, 141 { 0x8086, E1000_DEV_ID_80003ES2LAN_COPPER_DPT, 142 PCI_ANY_ID, PCI_ANY_ID, 0}, 143 { 0x8086, E1000_DEV_ID_80003ES2LAN_SERDES_DPT, 144 PCI_ANY_ID, PCI_ANY_ID, 0}, 145 { 0x8086, E1000_DEV_ID_ICH8_IGP_M_AMT, PCI_ANY_ID, PCI_ANY_ID, 0}, 146 { 0x8086, E1000_DEV_ID_ICH8_IGP_AMT, PCI_ANY_ID, PCI_ANY_ID, 0}, 147 { 0x8086, E1000_DEV_ID_ICH8_IGP_C, PCI_ANY_ID, PCI_ANY_ID, 0}, 148 { 0x8086, E1000_DEV_ID_ICH8_IFE, PCI_ANY_ID, PCI_ANY_ID, 0}, 149 { 0x8086, E1000_DEV_ID_ICH8_IFE_GT, PCI_ANY_ID, PCI_ANY_ID, 0}, 150 { 0x8086, E1000_DEV_ID_ICH8_IFE_G, PCI_ANY_ID, PCI_ANY_ID, 0}, 151 { 0x8086, E1000_DEV_ID_ICH8_IGP_M, PCI_ANY_ID, PCI_ANY_ID, 0}, 152 { 0x8086, E1000_DEV_ID_ICH8_82567V_3, PCI_ANY_ID, PCI_ANY_ID, 0}, 153 { 0x8086, E1000_DEV_ID_ICH9_IGP_M_AMT, PCI_ANY_ID, PCI_ANY_ID, 0}, 154 { 0x8086, E1000_DEV_ID_ICH9_IGP_AMT, PCI_ANY_ID, PCI_ANY_ID, 0}, 155 { 0x8086, E1000_DEV_ID_ICH9_IGP_C, PCI_ANY_ID, PCI_ANY_ID, 0}, 156 { 0x8086, E1000_DEV_ID_ICH9_IGP_M, PCI_ANY_ID, PCI_ANY_ID, 0}, 157 { 0x8086, E1000_DEV_ID_ICH9_IGP_M_V, PCI_ANY_ID, PCI_ANY_ID, 0}, 158 { 0x8086, E1000_DEV_ID_ICH9_IFE, PCI_ANY_ID, PCI_ANY_ID, 0}, 159 { 0x8086, E1000_DEV_ID_ICH9_IFE_GT, PCI_ANY_ID, PCI_ANY_ID, 0}, 160 { 0x8086, E1000_DEV_ID_ICH9_IFE_G, PCI_ANY_ID, PCI_ANY_ID, 0}, 161 { 0x8086, E1000_DEV_ID_ICH9_BM, PCI_ANY_ID, PCI_ANY_ID, 0}, 162 { 0x8086, E1000_DEV_ID_82574L, PCI_ANY_ID, PCI_ANY_ID, 0}, 163 { 0x8086, E1000_DEV_ID_82574LA, PCI_ANY_ID, PCI_ANY_ID, 0}, 164 { 0x8086, E1000_DEV_ID_ICH10_R_BM_LM, PCI_ANY_ID, PCI_ANY_ID, 0}, 165 { 0x8086, E1000_DEV_ID_ICH10_R_BM_LF, PCI_ANY_ID, PCI_ANY_ID, 0}, 166 { 0x8086, E1000_DEV_ID_ICH10_R_BM_V, PCI_ANY_ID, PCI_ANY_ID, 0}, 167 { 0x8086, E1000_DEV_ID_ICH10_D_BM_LM, PCI_ANY_ID, PCI_ANY_ID, 0}, 168 { 0x8086, E1000_DEV_ID_ICH10_D_BM_LF, PCI_ANY_ID, PCI_ANY_ID, 0}, 169 { 0x8086, E1000_DEV_ID_ICH10_D_BM_V, PCI_ANY_ID, PCI_ANY_ID, 0}, 170 { 0x8086, E1000_DEV_ID_PCH_M_HV_LM, PCI_ANY_ID, PCI_ANY_ID, 0}, 171 { 0x8086, E1000_DEV_ID_PCH_M_HV_LC, PCI_ANY_ID, PCI_ANY_ID, 0}, 172 { 0x8086, E1000_DEV_ID_PCH_D_HV_DM, PCI_ANY_ID, PCI_ANY_ID, 0}, 173 { 0x8086, E1000_DEV_ID_PCH_D_HV_DC, PCI_ANY_ID, PCI_ANY_ID, 0}, 174 { 0x8086, E1000_DEV_ID_PCH2_LV_LM, PCI_ANY_ID, PCI_ANY_ID, 0}, 175 { 0x8086, E1000_DEV_ID_PCH2_LV_V, PCI_ANY_ID, PCI_ANY_ID, 0}, 176 { 0x8086, E1000_DEV_ID_PCH_LPT_I217_LM, PCI_ANY_ID, PCI_ANY_ID, 0}, 177 { 0x8086, E1000_DEV_ID_PCH_LPT_I217_V, PCI_ANY_ID, PCI_ANY_ID, 0}, 178 { 0x8086, E1000_DEV_ID_PCH_LPTLP_I218_LM, 179 PCI_ANY_ID, PCI_ANY_ID, 0}, 180 { 0x8086, E1000_DEV_ID_PCH_LPTLP_I218_V, 181 PCI_ANY_ID, PCI_ANY_ID, 0}, 182 /* required last entry */ 183 { 0, 0, 0, 0, 0} 184}; 185 186/********************************************************************* 187 * Table of branding strings for all supported NICs. 188 *********************************************************************/ 189 190static char *em_strings[] = { 191 "Intel(R) PRO/1000 Network Connection" 192}; 193 194/********************************************************************* 195 * Function prototypes 196 *********************************************************************/ 197static int em_probe(device_t); 198static int em_attach(device_t); 199static int em_detach(device_t); 200static int em_shutdown(device_t); 201static int em_suspend(device_t); 202static int em_resume(device_t); 203#ifdef EM_MULTIQUEUE 204static int em_mq_start(struct ifnet *, struct mbuf *); 205static int em_mq_start_locked(struct ifnet *, 206 struct tx_ring *, struct mbuf *); 207static void em_qflush(struct ifnet *); 208#else 209static void em_start(struct ifnet *); 210static void em_start_locked(struct ifnet *, struct tx_ring *); 211#endif 212static int em_ioctl(struct ifnet *, u_long, caddr_t); 213static void em_init(void *); 214static void em_init_locked(struct adapter *); 215static void em_stop(void *); 216static void em_media_status(struct ifnet *, struct ifmediareq *); 217static int em_media_change(struct ifnet *); 218static void em_identify_hardware(struct adapter *); 219static int em_allocate_pci_resources(struct adapter *); 220static int em_allocate_legacy(struct adapter *); 221static int em_allocate_msix(struct adapter *); 222static int em_allocate_queues(struct adapter *); 223static int em_setup_msix(struct adapter *); 224static void em_free_pci_resources(struct adapter *); 225static void em_local_timer(void *); 226static void em_reset(struct adapter *); 227static int em_setup_interface(device_t, struct adapter *); 228 229static void em_setup_transmit_structures(struct adapter *); 230static void em_initialize_transmit_unit(struct adapter *); 231static int em_allocate_transmit_buffers(struct tx_ring *); 232static void em_free_transmit_structures(struct adapter *); 233static void em_free_transmit_buffers(struct tx_ring *); 234 235static int em_setup_receive_structures(struct adapter *); 236static int em_allocate_receive_buffers(struct rx_ring *); 237static void em_initialize_receive_unit(struct adapter *); 238static void em_free_receive_structures(struct adapter *); 239static void em_free_receive_buffers(struct rx_ring *); 240 241static void em_enable_intr(struct adapter *); 242static void em_disable_intr(struct adapter *); 243static void em_update_stats_counters(struct adapter *); 244static void em_add_hw_stats(struct adapter *adapter); 245static void em_txeof(struct tx_ring *); 246static bool em_rxeof(struct rx_ring *, int, int *); 247#ifndef __NO_STRICT_ALIGNMENT 248static int em_fixup_rx(struct rx_ring *); 249#endif 250static void em_receive_checksum(struct e1000_rx_desc *, struct mbuf *); 251static void em_transmit_checksum_setup(struct tx_ring *, struct mbuf *, int, 252 struct ip *, u32 *, u32 *); 253static void em_tso_setup(struct tx_ring *, struct mbuf *, int, struct ip *, 254 struct tcphdr *, u32 *, u32 *); 255static void em_set_promisc(struct adapter *); 256static void em_disable_promisc(struct adapter *); 257static void em_set_multi(struct adapter *); 258static void em_update_link_status(struct adapter *); 259static void em_refresh_mbufs(struct rx_ring *, int); 260static void em_register_vlan(void *, struct ifnet *, u16); 261static void em_unregister_vlan(void *, struct ifnet *, u16); 262static void em_setup_vlan_hw_support(struct adapter *); 263static int em_xmit(struct tx_ring *, struct mbuf **); 264static int em_dma_malloc(struct adapter *, bus_size_t, 265 struct em_dma_alloc *, int); 266static void em_dma_free(struct adapter *, struct em_dma_alloc *); 267static int em_sysctl_nvm_info(SYSCTL_HANDLER_ARGS); 268static void em_print_nvm_info(struct adapter *); 269static int em_sysctl_debug_info(SYSCTL_HANDLER_ARGS); 270static void em_print_debug_info(struct adapter *); 271static int em_is_valid_ether_addr(u8 *); 272static int em_sysctl_int_delay(SYSCTL_HANDLER_ARGS); 273static void em_add_int_delay_sysctl(struct adapter *, const char *, 274 const char *, struct em_int_delay_info *, int, int); 275/* Management and WOL Support */ 276static void em_init_manageability(struct adapter *); 277static void em_release_manageability(struct adapter *); 278static void em_get_hw_control(struct adapter *); 279static void em_release_hw_control(struct adapter *); 280static void em_get_wakeup(device_t); 281static void em_enable_wakeup(device_t); 282static int em_enable_phy_wakeup(struct adapter *); 283static void em_led_func(void *, int); 284static void em_disable_aspm(struct adapter *); 285 286static int em_irq_fast(void *); 287 288/* MSIX handlers */ 289static void em_msix_tx(void *); 290static void em_msix_rx(void *); 291static void em_msix_link(void *); 292static void em_handle_tx(void *context, int pending); 293static void em_handle_rx(void *context, int pending); 294static void em_handle_link(void *context, int pending); 295 296static void em_set_sysctl_value(struct adapter *, const char *, 297 const char *, int *, int); 298static int em_set_flowcntl(SYSCTL_HANDLER_ARGS); 299static int em_sysctl_eee(SYSCTL_HANDLER_ARGS); 300 301static __inline void em_rx_discard(struct rx_ring *, int); 302 303#ifdef DEVICE_POLLING 304static poll_handler_t em_poll; 305#endif /* POLLING */ 306 307/********************************************************************* 308 * FreeBSD Device Interface Entry Points 309 *********************************************************************/ 310 311static device_method_t em_methods[] = { 312 /* Device interface */ 313 DEVMETHOD(device_probe, em_probe), 314 DEVMETHOD(device_attach, em_attach), 315 DEVMETHOD(device_detach, em_detach), 316 DEVMETHOD(device_shutdown, em_shutdown), 317 DEVMETHOD(device_suspend, em_suspend), 318 DEVMETHOD(device_resume, em_resume), 319 DEVMETHOD_END 320}; 321 322static driver_t em_driver = { 323 "em", em_methods, sizeof(struct adapter), 324}; 325 326devclass_t em_devclass; 327DRIVER_MODULE(em, pci, em_driver, em_devclass, 0, 0); 328MODULE_DEPEND(em, pci, 1, 1, 1); 329MODULE_DEPEND(em, ether, 1, 1, 1); 330 331/********************************************************************* 332 * Tunable default values. 333 *********************************************************************/ 334 335#define EM_TICKS_TO_USECS(ticks) ((1024 * (ticks) + 500) / 1000) 336#define EM_USECS_TO_TICKS(usecs) ((1000 * (usecs) + 512) / 1024) 337#define M_TSO_LEN 66 338 339#define MAX_INTS_PER_SEC 8000 340#define DEFAULT_ITR (1000000000/(MAX_INTS_PER_SEC * 256)) 341 342/* Allow common code without TSO */ 343#ifndef CSUM_TSO 344#define CSUM_TSO 0 345#endif 346 347static SYSCTL_NODE(_hw, OID_AUTO, em, CTLFLAG_RD, 0, "EM driver parameters"); 348 349static int em_tx_int_delay_dflt = EM_TICKS_TO_USECS(EM_TIDV); 350static int em_rx_int_delay_dflt = EM_TICKS_TO_USECS(EM_RDTR); 351TUNABLE_INT("hw.em.tx_int_delay", &em_tx_int_delay_dflt); 352TUNABLE_INT("hw.em.rx_int_delay", &em_rx_int_delay_dflt); 353SYSCTL_INT(_hw_em, OID_AUTO, tx_int_delay, CTLFLAG_RDTUN, &em_tx_int_delay_dflt, 354 0, "Default transmit interrupt delay in usecs"); 355SYSCTL_INT(_hw_em, OID_AUTO, rx_int_delay, CTLFLAG_RDTUN, &em_rx_int_delay_dflt, 356 0, "Default receive interrupt delay in usecs"); 357 358static int em_tx_abs_int_delay_dflt = EM_TICKS_TO_USECS(EM_TADV); 359static int em_rx_abs_int_delay_dflt = EM_TICKS_TO_USECS(EM_RADV); 360TUNABLE_INT("hw.em.tx_abs_int_delay", &em_tx_abs_int_delay_dflt); 361TUNABLE_INT("hw.em.rx_abs_int_delay", &em_rx_abs_int_delay_dflt); 362SYSCTL_INT(_hw_em, OID_AUTO, tx_abs_int_delay, CTLFLAG_RDTUN, 363 &em_tx_abs_int_delay_dflt, 0, 364 "Default transmit interrupt delay limit in usecs"); 365SYSCTL_INT(_hw_em, OID_AUTO, rx_abs_int_delay, CTLFLAG_RDTUN, 366 &em_rx_abs_int_delay_dflt, 0, 367 "Default receive interrupt delay limit in usecs"); 368 369static int em_rxd = EM_DEFAULT_RXD; 370static int em_txd = EM_DEFAULT_TXD; 371TUNABLE_INT("hw.em.rxd", &em_rxd); 372TUNABLE_INT("hw.em.txd", &em_txd); 373SYSCTL_INT(_hw_em, OID_AUTO, rxd, CTLFLAG_RDTUN, &em_rxd, 0, 374 "Number of receive descriptors per queue"); 375SYSCTL_INT(_hw_em, OID_AUTO, txd, CTLFLAG_RDTUN, &em_txd, 0, 376 "Number of transmit descriptors per queue"); 377 378static int em_smart_pwr_down = FALSE; 379TUNABLE_INT("hw.em.smart_pwr_down", &em_smart_pwr_down); 380SYSCTL_INT(_hw_em, OID_AUTO, smart_pwr_down, CTLFLAG_RDTUN, &em_smart_pwr_down, 381 0, "Set to true to leave smart power down enabled on newer adapters"); 382 383/* Controls whether promiscuous also shows bad packets */ 384static int em_debug_sbp = FALSE; 385TUNABLE_INT("hw.em.sbp", &em_debug_sbp); 386SYSCTL_INT(_hw_em, OID_AUTO, sbp, CTLFLAG_RDTUN, &em_debug_sbp, 0, 387 "Show bad packets in promiscuous mode"); 388 389static int em_enable_msix = TRUE; 390TUNABLE_INT("hw.em.enable_msix", &em_enable_msix); 391SYSCTL_INT(_hw_em, OID_AUTO, enable_msix, CTLFLAG_RDTUN, &em_enable_msix, 0, 392 "Enable MSI-X interrupts"); 393 394/* How many packets rxeof tries to clean at a time */ 395static int em_rx_process_limit = 100; 396TUNABLE_INT("hw.em.rx_process_limit", &em_rx_process_limit); 397SYSCTL_INT(_hw_em, OID_AUTO, rx_process_limit, CTLFLAG_RDTUN, 398 &em_rx_process_limit, 0, 399 "Maximum number of received packets to process " 400 "at a time, -1 means unlimited"); 401 402/* Energy efficient ethernet - default to OFF */ 403static int eee_setting = 1; 404TUNABLE_INT("hw.em.eee_setting", &eee_setting); 405SYSCTL_INT(_hw_em, OID_AUTO, eee_setting, CTLFLAG_RDTUN, &eee_setting, 0, 406 "Enable Energy Efficient Ethernet"); 407 408/* Global used in WOL setup with multiport cards */ 409static int global_quad_port_a = 0; 410 411#ifdef DEV_NETMAP /* see ixgbe.c for details */ 412#include <dev/netmap/if_em_netmap.h> 413#endif /* DEV_NETMAP */ 414 415/********************************************************************* 416 * Device identification routine 417 * 418 * em_probe determines if the driver should be loaded on 419 * adapter based on PCI vendor/device id of the adapter. 420 * 421 * return BUS_PROBE_DEFAULT on success, positive on failure 422 *********************************************************************/ 423 424static int 425em_probe(device_t dev) 426{ 427 char adapter_name[60]; 428 u16 pci_vendor_id = 0; 429 u16 pci_device_id = 0; 430 u16 pci_subvendor_id = 0; 431 u16 pci_subdevice_id = 0; 432 em_vendor_info_t *ent; 433 434 INIT_DEBUGOUT("em_probe: begin"); 435 436 pci_vendor_id = pci_get_vendor(dev); 437 if (pci_vendor_id != EM_VENDOR_ID) 438 return (ENXIO); 439 440 pci_device_id = pci_get_device(dev); 441 pci_subvendor_id = pci_get_subvendor(dev); 442 pci_subdevice_id = pci_get_subdevice(dev); 443 444 ent = em_vendor_info_array; 445 while (ent->vendor_id != 0) { 446 if ((pci_vendor_id == ent->vendor_id) && 447 (pci_device_id == ent->device_id) && 448 449 ((pci_subvendor_id == ent->subvendor_id) || 450 (ent->subvendor_id == PCI_ANY_ID)) && 451 452 ((pci_subdevice_id == ent->subdevice_id) || 453 (ent->subdevice_id == PCI_ANY_ID))) { 454 sprintf(adapter_name, "%s %s", 455 em_strings[ent->index], 456 em_driver_version); 457 device_set_desc_copy(dev, adapter_name); 458 return (BUS_PROBE_DEFAULT); 459 } 460 ent++; 461 } 462 463 return (ENXIO); 464} 465 466/********************************************************************* 467 * Device initialization routine 468 * 469 * The attach entry point is called when the driver is being loaded. 470 * This routine identifies the type of hardware, allocates all resources 471 * and initializes the hardware. 472 * 473 * return 0 on success, positive on failure 474 *********************************************************************/ 475 476static int 477em_attach(device_t dev) 478{ 479 struct adapter *adapter; 480 struct e1000_hw *hw; 481 int error = 0; 482 483 INIT_DEBUGOUT("em_attach: begin"); 484 485 if (resource_disabled("em", device_get_unit(dev))) { 486 device_printf(dev, "Disabled by device hint\n"); 487 return (ENXIO); 488 } 489 490 adapter = device_get_softc(dev); 491 adapter->dev = adapter->osdep.dev = dev; 492 hw = &adapter->hw; 493 EM_CORE_LOCK_INIT(adapter, device_get_nameunit(dev)); 494 495 /* SYSCTL stuff */ 496 SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev), 497 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), 498 OID_AUTO, "nvm", CTLTYPE_INT|CTLFLAG_RW, adapter, 0, 499 em_sysctl_nvm_info, "I", "NVM Information"); 500 501 SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev), 502 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), 503 OID_AUTO, "debug", CTLTYPE_INT|CTLFLAG_RW, adapter, 0, 504 em_sysctl_debug_info, "I", "Debug Information"); 505 506 SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev), 507 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), 508 OID_AUTO, "fc", CTLTYPE_INT|CTLFLAG_RW, adapter, 0, 509 em_set_flowcntl, "I", "Flow Control"); 510 511 callout_init_mtx(&adapter->timer, &adapter->core_mtx, 0); 512 513 /* Determine hardware and mac info */ 514 em_identify_hardware(adapter); 515 516 /* Setup PCI resources */ 517 if (em_allocate_pci_resources(adapter)) { 518 device_printf(dev, "Allocation of PCI resources failed\n"); 519 error = ENXIO; 520 goto err_pci; 521 } 522 523 /* 524 ** For ICH8 and family we need to 525 ** map the flash memory, and this 526 ** must happen after the MAC is 527 ** identified 528 */ 529 if ((hw->mac.type == e1000_ich8lan) || 530 (hw->mac.type == e1000_ich9lan) || 531 (hw->mac.type == e1000_ich10lan) || 532 (hw->mac.type == e1000_pchlan) || 533 (hw->mac.type == e1000_pch2lan) || 534 (hw->mac.type == e1000_pch_lpt)) { 535 int rid = EM_BAR_TYPE_FLASH; 536 adapter->flash = bus_alloc_resource_any(dev, 537 SYS_RES_MEMORY, &rid, RF_ACTIVE); 538 if (adapter->flash == NULL) { 539 device_printf(dev, "Mapping of Flash failed\n"); 540 error = ENXIO; 541 goto err_pci; 542 } 543 /* This is used in the shared code */ 544 hw->flash_address = (u8 *)adapter->flash; 545 adapter->osdep.flash_bus_space_tag = 546 rman_get_bustag(adapter->flash); 547 adapter->osdep.flash_bus_space_handle = 548 rman_get_bushandle(adapter->flash); 549 } 550 551 /* Do Shared Code initialization */ 552 if (e1000_setup_init_funcs(hw, TRUE)) { 553 device_printf(dev, "Setup of Shared code failed\n"); 554 error = ENXIO; 555 goto err_pci; 556 } 557 558 e1000_get_bus_info(hw); 559 560 /* Set up some sysctls for the tunable interrupt delays */ 561 em_add_int_delay_sysctl(adapter, "rx_int_delay", 562 "receive interrupt delay in usecs", &adapter->rx_int_delay, 563 E1000_REGISTER(hw, E1000_RDTR), em_rx_int_delay_dflt); 564 em_add_int_delay_sysctl(adapter, "tx_int_delay", 565 "transmit interrupt delay in usecs", &adapter->tx_int_delay, 566 E1000_REGISTER(hw, E1000_TIDV), em_tx_int_delay_dflt); 567 em_add_int_delay_sysctl(adapter, "rx_abs_int_delay", 568 "receive interrupt delay limit in usecs", 569 &adapter->rx_abs_int_delay, 570 E1000_REGISTER(hw, E1000_RADV), 571 em_rx_abs_int_delay_dflt); 572 em_add_int_delay_sysctl(adapter, "tx_abs_int_delay", 573 "transmit interrupt delay limit in usecs", 574 &adapter->tx_abs_int_delay, 575 E1000_REGISTER(hw, E1000_TADV), 576 em_tx_abs_int_delay_dflt); 577 em_add_int_delay_sysctl(adapter, "itr", 578 "interrupt delay limit in usecs/4", 579 &adapter->tx_itr, 580 E1000_REGISTER(hw, E1000_ITR), 581 DEFAULT_ITR); 582 583 /* Sysctl for limiting the amount of work done in the taskqueue */ 584 em_set_sysctl_value(adapter, "rx_processing_limit", 585 "max number of rx packets to process", &adapter->rx_process_limit, 586 em_rx_process_limit); 587 588 /* 589 * Validate number of transmit and receive descriptors. It 590 * must not exceed hardware maximum, and must be multiple 591 * of E1000_DBA_ALIGN. 592 */ 593 if (((em_txd * sizeof(struct e1000_tx_desc)) % EM_DBA_ALIGN) != 0 || 594 (em_txd > EM_MAX_TXD) || (em_txd < EM_MIN_TXD)) { 595 device_printf(dev, "Using %d TX descriptors instead of %d!\n", 596 EM_DEFAULT_TXD, em_txd); 597 adapter->num_tx_desc = EM_DEFAULT_TXD; 598 } else 599 adapter->num_tx_desc = em_txd; 600 601 if (((em_rxd * sizeof(struct e1000_rx_desc)) % EM_DBA_ALIGN) != 0 || 602 (em_rxd > EM_MAX_RXD) || (em_rxd < EM_MIN_RXD)) { 603 device_printf(dev, "Using %d RX descriptors instead of %d!\n", 604 EM_DEFAULT_RXD, em_rxd); 605 adapter->num_rx_desc = EM_DEFAULT_RXD; 606 } else 607 adapter->num_rx_desc = em_rxd; 608 609 hw->mac.autoneg = DO_AUTO_NEG; 610 hw->phy.autoneg_wait_to_complete = FALSE; 611 hw->phy.autoneg_advertised = AUTONEG_ADV_DEFAULT; 612 613 /* Copper options */ 614 if (hw->phy.media_type == e1000_media_type_copper) { 615 hw->phy.mdix = AUTO_ALL_MODES; 616 hw->phy.disable_polarity_correction = FALSE; 617 hw->phy.ms_type = EM_MASTER_SLAVE; 618 } 619 620 /* 621 * Set the frame limits assuming 622 * standard ethernet sized frames. 623 */ 624 adapter->hw.mac.max_frame_size = 625 ETHERMTU + ETHER_HDR_LEN + ETHERNET_FCS_SIZE; 626 627 /* 628 * This controls when hardware reports transmit completion 629 * status. 630 */ 631 hw->mac.report_tx_early = 1; 632 633 /* 634 ** Get queue/ring memory 635 */ 636 if (em_allocate_queues(adapter)) { 637 error = ENOMEM; 638 goto err_pci; 639 } 640 641 /* Allocate multicast array memory. */ 642 adapter->mta = malloc(sizeof(u8) * ETH_ADDR_LEN * 643 MAX_NUM_MULTICAST_ADDRESSES, M_DEVBUF, M_NOWAIT); 644 if (adapter->mta == NULL) { 645 device_printf(dev, "Can not allocate multicast setup array\n"); 646 error = ENOMEM; 647 goto err_late; 648 } 649 650 /* Check SOL/IDER usage */ 651 if (e1000_check_reset_block(hw)) 652 device_printf(dev, "PHY reset is blocked" 653 " due to SOL/IDER session.\n"); 654 655 /* Sysctl for setting Energy Efficient Ethernet */ 656 hw->dev_spec.ich8lan.eee_disable = eee_setting; 657 SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev), 658 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), 659 OID_AUTO, "eee_control", CTLTYPE_INT|CTLFLAG_RW, 660 adapter, 0, em_sysctl_eee, "I", 661 "Disable Energy Efficient Ethernet"); 662 663 /* 664 ** Start from a known state, this is 665 ** important in reading the nvm and 666 ** mac from that. 667 */ 668 e1000_reset_hw(hw); 669 670 671 /* Make sure we have a good EEPROM before we read from it */ 672 if (e1000_validate_nvm_checksum(hw) < 0) { 673 /* 674 ** Some PCI-E parts fail the first check due to 675 ** the link being in sleep state, call it again, 676 ** if it fails a second time its a real issue. 677 */ 678 if (e1000_validate_nvm_checksum(hw) < 0) { 679 device_printf(dev, 680 "The EEPROM Checksum Is Not Valid\n"); 681 error = EIO; 682 goto err_late; 683 } 684 } 685 686 /* Copy the permanent MAC address out of the EEPROM */ 687 if (e1000_read_mac_addr(hw) < 0) { 688 device_printf(dev, "EEPROM read error while reading MAC" 689 " address\n"); 690 error = EIO; 691 goto err_late; 692 } 693 694 if (!em_is_valid_ether_addr(hw->mac.addr)) { 695 device_printf(dev, "Invalid MAC address\n"); 696 error = EIO; 697 goto err_late; 698 } 699 700 /* 701 ** Do interrupt configuration 702 */ 703 if (adapter->msix > 1) /* Do MSIX */ 704 error = em_allocate_msix(adapter); 705 else /* MSI or Legacy */ 706 error = em_allocate_legacy(adapter); 707 if (error) 708 goto err_late; 709 710 /* 711 * Get Wake-on-Lan and Management info for later use 712 */ 713 em_get_wakeup(dev); 714 715 /* Setup OS specific network interface */ 716 if (em_setup_interface(dev, adapter) != 0) 717 goto err_late; 718 719 em_reset(adapter); 720 721 /* Initialize statistics */ 722 em_update_stats_counters(adapter); 723 724 hw->mac.get_link_status = 1; 725 em_update_link_status(adapter); 726 727 /* Register for VLAN events */ 728 adapter->vlan_attach = EVENTHANDLER_REGISTER(vlan_config, 729 em_register_vlan, adapter, EVENTHANDLER_PRI_FIRST); 730 adapter->vlan_detach = EVENTHANDLER_REGISTER(vlan_unconfig, 731 em_unregister_vlan, adapter, EVENTHANDLER_PRI_FIRST); 732 733 em_add_hw_stats(adapter); 734 735 /* Non-AMT based hardware can now take control from firmware */ 736 if (adapter->has_manage && !adapter->has_amt) 737 em_get_hw_control(adapter); 738 739 /* Tell the stack that the interface is not active */ 740 adapter->ifp->if_drv_flags &= ~IFF_DRV_RUNNING; 741 adapter->ifp->if_drv_flags |= IFF_DRV_OACTIVE; 742 743 adapter->led_dev = led_create(em_led_func, adapter, 744 device_get_nameunit(dev)); 745#ifdef DEV_NETMAP 746 em_netmap_attach(adapter); 747#endif /* DEV_NETMAP */ 748 749 INIT_DEBUGOUT("em_attach: end"); 750 751 return (0); 752 753err_late: 754 em_free_transmit_structures(adapter); 755 em_free_receive_structures(adapter); 756 em_release_hw_control(adapter); 757 if (adapter->ifp != NULL) 758 if_free(adapter->ifp); 759err_pci: 760 em_free_pci_resources(adapter); 761 free(adapter->mta, M_DEVBUF); 762 EM_CORE_LOCK_DESTROY(adapter); 763 764 return (error); 765} 766 767/********************************************************************* 768 * Device removal routine 769 * 770 * The detach entry point is called when the driver is being removed. 771 * This routine stops the adapter and deallocates all the resources 772 * that were allocated for driver operation. 773 * 774 * return 0 on success, positive on failure 775 *********************************************************************/ 776 777static int 778em_detach(device_t dev) 779{ 780 struct adapter *adapter = device_get_softc(dev); 781 struct ifnet *ifp = adapter->ifp; 782 783 INIT_DEBUGOUT("em_detach: begin"); 784 785 /* Make sure VLANS are not using driver */ 786 if (adapter->ifp->if_vlantrunk != NULL) { 787 device_printf(dev,"Vlan in use, detach first\n"); 788 return (EBUSY); 789 } 790 791#ifdef DEVICE_POLLING 792 if (ifp->if_capenable & IFCAP_POLLING) 793 ether_poll_deregister(ifp); 794#endif 795 796 if (adapter->led_dev != NULL) 797 led_destroy(adapter->led_dev); 798 799 EM_CORE_LOCK(adapter); 800 adapter->in_detach = 1; 801 em_stop(adapter); 802 EM_CORE_UNLOCK(adapter); 803 EM_CORE_LOCK_DESTROY(adapter); 804 805 e1000_phy_hw_reset(&adapter->hw); 806 807 em_release_manageability(adapter); 808 em_release_hw_control(adapter); 809 810 /* Unregister VLAN events */ 811 if (adapter->vlan_attach != NULL) 812 EVENTHANDLER_DEREGISTER(vlan_config, adapter->vlan_attach); 813 if (adapter->vlan_detach != NULL) 814 EVENTHANDLER_DEREGISTER(vlan_unconfig, adapter->vlan_detach); 815 816 ether_ifdetach(adapter->ifp); 817 callout_drain(&adapter->timer); 818 819#ifdef DEV_NETMAP 820 netmap_detach(ifp); 821#endif /* DEV_NETMAP */ 822 823 em_free_pci_resources(adapter); 824 bus_generic_detach(dev); 825 if_free(ifp); 826 827 em_free_transmit_structures(adapter); 828 em_free_receive_structures(adapter); 829 830 em_release_hw_control(adapter); 831 free(adapter->mta, M_DEVBUF); 832 833 return (0); 834} 835 836/********************************************************************* 837 * 838 * Shutdown entry point 839 * 840 **********************************************************************/ 841 842static int 843em_shutdown(device_t dev) 844{ 845 return em_suspend(dev); 846} 847 848/* 849 * Suspend/resume device methods. 850 */ 851static int 852em_suspend(device_t dev) 853{ 854 struct adapter *adapter = device_get_softc(dev); 855 856 EM_CORE_LOCK(adapter); 857 858 em_release_manageability(adapter); 859 em_release_hw_control(adapter); 860 em_enable_wakeup(dev); 861 862 EM_CORE_UNLOCK(adapter); 863 864 return bus_generic_suspend(dev); 865} 866 867static int 868em_resume(device_t dev) 869{ 870 struct adapter *adapter = device_get_softc(dev); 871 struct tx_ring *txr = adapter->tx_rings; 872 struct ifnet *ifp = adapter->ifp; 873 874 EM_CORE_LOCK(adapter); 875 if (adapter->hw.mac.type == e1000_pch2lan) 876 e1000_resume_workarounds_pchlan(&adapter->hw); 877 em_init_locked(adapter); 878 em_init_manageability(adapter); 879 880 if ((ifp->if_flags & IFF_UP) && 881 (ifp->if_drv_flags & IFF_DRV_RUNNING) && adapter->link_active) { 882 for (int i = 0; i < adapter->num_queues; i++, txr++) { 883 EM_TX_LOCK(txr); 884#ifdef EM_MULTIQUEUE 885 if (!drbr_empty(ifp, txr->br)) 886 em_mq_start_locked(ifp, txr, NULL); 887#else 888 if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd)) 889 em_start_locked(ifp, txr); 890#endif 891 EM_TX_UNLOCK(txr); 892 } 893 } 894 EM_CORE_UNLOCK(adapter); 895 896 return bus_generic_resume(dev); 897} 898 899 900#ifdef EM_MULTIQUEUE 901/********************************************************************* 902 * Multiqueue Transmit routines 903 * 904 * em_mq_start is called by the stack to initiate a transmit. 905 * however, if busy the driver can queue the request rather 906 * than do an immediate send. It is this that is an advantage 907 * in this driver, rather than also having multiple tx queues. 908 **********************************************************************/ 909static int 910em_mq_start_locked(struct ifnet *ifp, struct tx_ring *txr, struct mbuf *m) 911{ 912 struct adapter *adapter = txr->adapter; 913 struct mbuf *next; 914 int err = 0, enq = 0; 915 916 if ((ifp->if_drv_flags & (IFF_DRV_RUNNING | IFF_DRV_OACTIVE)) != 917 IFF_DRV_RUNNING || adapter->link_active == 0) { 918 if (m != NULL) 919 err = drbr_enqueue(ifp, txr->br, m); 920 return (err); 921 } 922 923 enq = 0; 924 if (m != NULL) { 925 err = drbr_enqueue(ifp, txr->br, m); 926 if (err) 927 return (err); 928 } 929 930 /* Process the queue */ 931 while ((next = drbr_peek(ifp, txr->br)) != NULL) { 932 if ((err = em_xmit(txr, &next)) != 0) { 933 if (next == NULL) 934 drbr_advance(ifp, txr->br); 935 else 936 drbr_putback(ifp, txr->br, next); 937 break; 938 } 939 drbr_advance(ifp, txr->br); 940 enq++; 941 ifp->if_obytes += next->m_pkthdr.len; 942 if (next->m_flags & M_MCAST) 943 ifp->if_omcasts++; 944 ETHER_BPF_MTAP(ifp, next); 945 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) 946 break; 947 } 948 949 if (enq > 0) { 950 /* Set the watchdog */ 951 txr->queue_status = EM_QUEUE_WORKING; 952 txr->watchdog_time = ticks; 953 } 954 955 if (txr->tx_avail < EM_MAX_SCATTER) 956 em_txeof(txr); 957 if (txr->tx_avail < EM_MAX_SCATTER) 958 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 959 return (err); 960} 961 962/* 963** Multiqueue capable stack interface 964*/ 965static int 966em_mq_start(struct ifnet *ifp, struct mbuf *m) 967{ 968 struct adapter *adapter = ifp->if_softc; 969 struct tx_ring *txr = adapter->tx_rings; 970 int error; 971 972 if (EM_TX_TRYLOCK(txr)) { 973 error = em_mq_start_locked(ifp, txr, m); 974 EM_TX_UNLOCK(txr); 975 } else 976 error = drbr_enqueue(ifp, txr->br, m); 977 978 return (error); 979} 980 981/* 982** Flush all ring buffers 983*/ 984static void 985em_qflush(struct ifnet *ifp) 986{ 987 struct adapter *adapter = ifp->if_softc; 988 struct tx_ring *txr = adapter->tx_rings; 989 struct mbuf *m; 990 991 for (int i = 0; i < adapter->num_queues; i++, txr++) { 992 EM_TX_LOCK(txr); 993 while ((m = buf_ring_dequeue_sc(txr->br)) != NULL) 994 m_freem(m); 995 EM_TX_UNLOCK(txr); 996 } 997 if_qflush(ifp); 998} 999#else /* !EM_MULTIQUEUE */ 1000 1001static void 1002em_start_locked(struct ifnet *ifp, struct tx_ring *txr) 1003{ 1004 struct adapter *adapter = ifp->if_softc; 1005 struct mbuf *m_head; 1006 1007 EM_TX_LOCK_ASSERT(txr); 1008 1009 if ((ifp->if_drv_flags & (IFF_DRV_RUNNING|IFF_DRV_OACTIVE)) != 1010 IFF_DRV_RUNNING) 1011 return; 1012 1013 if (!adapter->link_active) 1014 return; 1015 1016 while (!IFQ_DRV_IS_EMPTY(&ifp->if_snd)) { 1017 /* Call cleanup if number of TX descriptors low */ 1018 if (txr->tx_avail <= EM_TX_CLEANUP_THRESHOLD) 1019 em_txeof(txr); 1020 if (txr->tx_avail < EM_MAX_SCATTER) { 1021 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 1022 break; 1023 } 1024 IFQ_DRV_DEQUEUE(&ifp->if_snd, m_head); 1025 if (m_head == NULL) 1026 break; 1027 /* 1028 * Encapsulation can modify our pointer, and or make it 1029 * NULL on failure. In that event, we can't requeue. 1030 */ 1031 if (em_xmit(txr, &m_head)) { 1032 if (m_head == NULL) 1033 break; 1034 IFQ_DRV_PREPEND(&ifp->if_snd, m_head); 1035 break; 1036 } 1037 1038 /* Send a copy of the frame to the BPF listener */ 1039 ETHER_BPF_MTAP(ifp, m_head); 1040 1041 /* Set timeout in case hardware has problems transmitting. */ 1042 txr->watchdog_time = ticks; 1043 txr->queue_status = EM_QUEUE_WORKING; 1044 } 1045 1046 return; 1047} 1048 1049static void 1050em_start(struct ifnet *ifp) 1051{ 1052 struct adapter *adapter = ifp->if_softc; 1053 struct tx_ring *txr = adapter->tx_rings; 1054 1055 if (ifp->if_drv_flags & IFF_DRV_RUNNING) { 1056 EM_TX_LOCK(txr); 1057 em_start_locked(ifp, txr); 1058 EM_TX_UNLOCK(txr); 1059 } 1060 return; 1061} 1062#endif /* EM_MULTIQUEUE */ 1063 1064/********************************************************************* 1065 * Ioctl entry point 1066 * 1067 * em_ioctl is called when the user wants to configure the 1068 * interface. 1069 * 1070 * return 0 on success, positive on failure 1071 **********************************************************************/ 1072 1073static int 1074em_ioctl(struct ifnet *ifp, u_long command, caddr_t data) 1075{ 1076 struct adapter *adapter = ifp->if_softc; 1077 struct ifreq *ifr = (struct ifreq *)data; 1078#if defined(INET) || defined(INET6) 1079 struct ifaddr *ifa = (struct ifaddr *)data; 1080#endif 1081 bool avoid_reset = FALSE; 1082 int error = 0; 1083 1084 if (adapter->in_detach) 1085 return (error); 1086 1087 switch (command) { 1088 case SIOCSIFADDR: 1089#ifdef INET 1090 if (ifa->ifa_addr->sa_family == AF_INET) 1091 avoid_reset = TRUE; 1092#endif 1093#ifdef INET6 1094 if (ifa->ifa_addr->sa_family == AF_INET6) 1095 avoid_reset = TRUE; 1096#endif 1097 /* 1098 ** Calling init results in link renegotiation, 1099 ** so we avoid doing it when possible. 1100 */ 1101 if (avoid_reset) { 1102 ifp->if_flags |= IFF_UP; 1103 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) 1104 em_init(adapter); 1105#ifdef INET 1106 if (!(ifp->if_flags & IFF_NOARP)) 1107 arp_ifinit(ifp, ifa); 1108#endif 1109 } else 1110 error = ether_ioctl(ifp, command, data); 1111 break; 1112 case SIOCSIFMTU: 1113 { 1114 int max_frame_size; 1115 1116 IOCTL_DEBUGOUT("ioctl rcv'd: SIOCSIFMTU (Set Interface MTU)"); 1117 1118 EM_CORE_LOCK(adapter); 1119 switch (adapter->hw.mac.type) { 1120 case e1000_82571: 1121 case e1000_82572: 1122 case e1000_ich9lan: 1123 case e1000_ich10lan: 1124 case e1000_pch2lan: 1125 case e1000_pch_lpt: 1126 case e1000_82574: 1127 case e1000_82583: 1128 case e1000_80003es2lan: /* 9K Jumbo Frame size */ 1129 max_frame_size = 9234; 1130 break; 1131 case e1000_pchlan: 1132 max_frame_size = 4096; 1133 break; 1134 /* Adapters that do not support jumbo frames */ 1135 case e1000_ich8lan: 1136 max_frame_size = ETHER_MAX_LEN; 1137 break; 1138 default: 1139 max_frame_size = MAX_JUMBO_FRAME_SIZE; 1140 } 1141 if (ifr->ifr_mtu > max_frame_size - ETHER_HDR_LEN - 1142 ETHER_CRC_LEN) { 1143 EM_CORE_UNLOCK(adapter); 1144 error = EINVAL; 1145 break; 1146 } 1147 1148 ifp->if_mtu = ifr->ifr_mtu; 1149 adapter->hw.mac.max_frame_size = 1150 ifp->if_mtu + ETHER_HDR_LEN + ETHER_CRC_LEN; 1151 em_init_locked(adapter); 1152 EM_CORE_UNLOCK(adapter); 1153 break; 1154 } 1155 case SIOCSIFFLAGS: 1156 IOCTL_DEBUGOUT("ioctl rcv'd:\ 1157 SIOCSIFFLAGS (Set Interface Flags)"); 1158 EM_CORE_LOCK(adapter); 1159 if (ifp->if_flags & IFF_UP) { 1160 if ((ifp->if_drv_flags & IFF_DRV_RUNNING)) { 1161 if ((ifp->if_flags ^ adapter->if_flags) & 1162 (IFF_PROMISC | IFF_ALLMULTI)) { 1163 em_disable_promisc(adapter); 1164 em_set_promisc(adapter); 1165 } 1166 } else 1167 em_init_locked(adapter); 1168 } else 1169 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 1170 em_stop(adapter); 1171 adapter->if_flags = ifp->if_flags; 1172 EM_CORE_UNLOCK(adapter); 1173 break; 1174 case SIOCADDMULTI: 1175 case SIOCDELMULTI: 1176 IOCTL_DEBUGOUT("ioctl rcv'd: SIOC(ADD|DEL)MULTI"); 1177 if (ifp->if_drv_flags & IFF_DRV_RUNNING) { 1178 EM_CORE_LOCK(adapter); 1179 em_disable_intr(adapter); 1180 em_set_multi(adapter); 1181#ifdef DEVICE_POLLING 1182 if (!(ifp->if_capenable & IFCAP_POLLING)) 1183#endif 1184 em_enable_intr(adapter); 1185 EM_CORE_UNLOCK(adapter); 1186 } 1187 break; 1188 case SIOCSIFMEDIA: 1189 /* Check SOL/IDER usage */ 1190 EM_CORE_LOCK(adapter); 1191 if (e1000_check_reset_block(&adapter->hw)) { 1192 EM_CORE_UNLOCK(adapter); 1193 device_printf(adapter->dev, "Media change is" 1194 " blocked due to SOL/IDER session.\n"); 1195 break; 1196 } 1197 EM_CORE_UNLOCK(adapter); 1198 /* falls thru */ 1199 case SIOCGIFMEDIA: 1200 IOCTL_DEBUGOUT("ioctl rcv'd: \ 1201 SIOCxIFMEDIA (Get/Set Interface Media)"); 1202 error = ifmedia_ioctl(ifp, ifr, &adapter->media, command); 1203 break; 1204 case SIOCSIFCAP: 1205 { 1206 int mask, reinit; 1207 1208 IOCTL_DEBUGOUT("ioctl rcv'd: SIOCSIFCAP (Set Capabilities)"); 1209 reinit = 0; 1210 mask = ifr->ifr_reqcap ^ ifp->if_capenable; 1211#ifdef DEVICE_POLLING 1212 if (mask & IFCAP_POLLING) { 1213 if (ifr->ifr_reqcap & IFCAP_POLLING) { 1214 error = ether_poll_register(em_poll, ifp); 1215 if (error) 1216 return (error); 1217 EM_CORE_LOCK(adapter); 1218 em_disable_intr(adapter); 1219 ifp->if_capenable |= IFCAP_POLLING; 1220 EM_CORE_UNLOCK(adapter); 1221 } else { 1222 error = ether_poll_deregister(ifp); 1223 /* Enable interrupt even in error case */ 1224 EM_CORE_LOCK(adapter); 1225 em_enable_intr(adapter); 1226 ifp->if_capenable &= ~IFCAP_POLLING; 1227 EM_CORE_UNLOCK(adapter); 1228 } 1229 } 1230#endif 1231 if (mask & IFCAP_HWCSUM) { 1232 ifp->if_capenable ^= IFCAP_HWCSUM; 1233 reinit = 1; 1234 } 1235 if (mask & IFCAP_TSO4) { 1236 ifp->if_capenable ^= IFCAP_TSO4; 1237 reinit = 1; 1238 } 1239 if (mask & IFCAP_VLAN_HWTAGGING) { 1240 ifp->if_capenable ^= IFCAP_VLAN_HWTAGGING; 1241 reinit = 1; 1242 } 1243 if (mask & IFCAP_VLAN_HWFILTER) { 1244 ifp->if_capenable ^= IFCAP_VLAN_HWFILTER; 1245 reinit = 1; 1246 } 1247 if (mask & IFCAP_VLAN_HWTSO) { 1248 ifp->if_capenable ^= IFCAP_VLAN_HWTSO; 1249 reinit = 1; 1250 } 1251 if ((mask & IFCAP_WOL) && 1252 (ifp->if_capabilities & IFCAP_WOL) != 0) { 1253 if (mask & IFCAP_WOL_MCAST) 1254 ifp->if_capenable ^= IFCAP_WOL_MCAST; 1255 if (mask & IFCAP_WOL_MAGIC) 1256 ifp->if_capenable ^= IFCAP_WOL_MAGIC; 1257 } 1258 if (reinit && (ifp->if_drv_flags & IFF_DRV_RUNNING)) 1259 em_init(adapter); 1260 VLAN_CAPABILITIES(ifp); 1261 break; 1262 } 1263 1264 default: 1265 error = ether_ioctl(ifp, command, data); 1266 break; 1267 } 1268 1269 return (error); 1270} 1271 1272 1273/********************************************************************* 1274 * Init entry point 1275 * 1276 * This routine is used in two ways. It is used by the stack as 1277 * init entry point in network interface structure. It is also used 1278 * by the driver as a hw/sw initialization routine to get to a 1279 * consistent state. 1280 * 1281 * return 0 on success, positive on failure 1282 **********************************************************************/ 1283 1284static void 1285em_init_locked(struct adapter *adapter) 1286{ 1287 struct ifnet *ifp = adapter->ifp; 1288 device_t dev = adapter->dev; 1289 1290 INIT_DEBUGOUT("em_init: begin"); 1291 1292 EM_CORE_LOCK_ASSERT(adapter); 1293 1294 em_disable_intr(adapter); 1295 callout_stop(&adapter->timer); 1296 1297 /* Get the latest mac address, User can use a LAA */ 1298 bcopy(IF_LLADDR(adapter->ifp), adapter->hw.mac.addr, 1299 ETHER_ADDR_LEN); 1300 1301 /* Put the address into the Receive Address Array */ 1302 e1000_rar_set(&adapter->hw, adapter->hw.mac.addr, 0); 1303 1304 /* 1305 * With the 82571 adapter, RAR[0] may be overwritten 1306 * when the other port is reset, we make a duplicate 1307 * in RAR[14] for that eventuality, this assures 1308 * the interface continues to function. 1309 */ 1310 if (adapter->hw.mac.type == e1000_82571) { 1311 e1000_set_laa_state_82571(&adapter->hw, TRUE); 1312 e1000_rar_set(&adapter->hw, adapter->hw.mac.addr, 1313 E1000_RAR_ENTRIES - 1); 1314 } 1315 1316 /* Initialize the hardware */ 1317 em_reset(adapter); 1318 em_update_link_status(adapter); 1319 1320 /* Setup VLAN support, basic and offload if available */ 1321 E1000_WRITE_REG(&adapter->hw, E1000_VET, ETHERTYPE_VLAN); 1322 1323 /* Set hardware offload abilities */ 1324 ifp->if_hwassist = 0; 1325 if (ifp->if_capenable & IFCAP_TXCSUM) 1326 ifp->if_hwassist |= (CSUM_TCP | CSUM_UDP); 1327 if (ifp->if_capenable & IFCAP_TSO4) 1328 ifp->if_hwassist |= CSUM_TSO; 1329 1330 /* Configure for OS presence */ 1331 em_init_manageability(adapter); 1332 1333 /* Prepare transmit descriptors and buffers */ 1334 em_setup_transmit_structures(adapter); 1335 em_initialize_transmit_unit(adapter); 1336 1337 /* Setup Multicast table */ 1338 em_set_multi(adapter); 1339 1340 /* 1341 ** Figure out the desired mbuf 1342 ** pool for doing jumbos 1343 */ 1344 if (adapter->hw.mac.max_frame_size <= 2048) 1345 adapter->rx_mbuf_sz = MCLBYTES; 1346 else if (adapter->hw.mac.max_frame_size <= 4096) 1347 adapter->rx_mbuf_sz = MJUMPAGESIZE; 1348 else 1349 adapter->rx_mbuf_sz = MJUM9BYTES; 1350 1351 /* Prepare receive descriptors and buffers */ 1352 if (em_setup_receive_structures(adapter)) { 1353 device_printf(dev, "Could not setup receive structures\n"); 1354 em_stop(adapter); 1355 return; 1356 } 1357 em_initialize_receive_unit(adapter); 1358 1359 /* Use real VLAN Filter support? */ 1360 if (ifp->if_capenable & IFCAP_VLAN_HWTAGGING) { 1361 if (ifp->if_capenable & IFCAP_VLAN_HWFILTER) 1362 /* Use real VLAN Filter support */ 1363 em_setup_vlan_hw_support(adapter); 1364 else { 1365 u32 ctrl; 1366 ctrl = E1000_READ_REG(&adapter->hw, E1000_CTRL); 1367 ctrl |= E1000_CTRL_VME; 1368 E1000_WRITE_REG(&adapter->hw, E1000_CTRL, ctrl); 1369 } 1370 } 1371 1372 /* Don't lose promiscuous settings */ 1373 em_set_promisc(adapter); 1374 1375 /* Set the interface as ACTIVE */ 1376 ifp->if_drv_flags |= IFF_DRV_RUNNING; 1377 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 1378 1379 callout_reset(&adapter->timer, hz, em_local_timer, adapter); 1380 e1000_clear_hw_cntrs_base_generic(&adapter->hw); 1381 1382 /* MSI/X configuration for 82574 */ 1383 if (adapter->hw.mac.type == e1000_82574) { 1384 int tmp; 1385 tmp = E1000_READ_REG(&adapter->hw, E1000_CTRL_EXT); 1386 tmp |= E1000_CTRL_EXT_PBA_CLR; 1387 E1000_WRITE_REG(&adapter->hw, E1000_CTRL_EXT, tmp); 1388 /* Set the IVAR - interrupt vector routing. */ 1389 E1000_WRITE_REG(&adapter->hw, E1000_IVAR, adapter->ivars); 1390 } 1391 1392#ifdef DEVICE_POLLING 1393 /* 1394 * Only enable interrupts if we are not polling, make sure 1395 * they are off otherwise. 1396 */ 1397 if (ifp->if_capenable & IFCAP_POLLING) 1398 em_disable_intr(adapter); 1399 else 1400#endif /* DEVICE_POLLING */ 1401 em_enable_intr(adapter); 1402 1403 /* AMT based hardware can now take control from firmware */ 1404 if (adapter->has_manage && adapter->has_amt) 1405 em_get_hw_control(adapter); 1406} 1407 1408static void 1409em_init(void *arg) 1410{ 1411 struct adapter *adapter = arg; 1412 1413 EM_CORE_LOCK(adapter); 1414 em_init_locked(adapter); 1415 EM_CORE_UNLOCK(adapter); 1416} 1417 1418 1419#ifdef DEVICE_POLLING 1420/********************************************************************* 1421 * 1422 * Legacy polling routine: note this only works with single queue 1423 * 1424 *********************************************************************/ 1425static int 1426em_poll(struct ifnet *ifp, enum poll_cmd cmd, int count) 1427{ 1428 struct adapter *adapter = ifp->if_softc; 1429 struct tx_ring *txr = adapter->tx_rings; 1430 struct rx_ring *rxr = adapter->rx_rings; 1431 u32 reg_icr; 1432 int rx_done; 1433 1434 EM_CORE_LOCK(adapter); 1435 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) { 1436 EM_CORE_UNLOCK(adapter); 1437 return (0); 1438 } 1439 1440 if (cmd == POLL_AND_CHECK_STATUS) { 1441 reg_icr = E1000_READ_REG(&adapter->hw, E1000_ICR); 1442 if (reg_icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) { 1443 callout_stop(&adapter->timer); 1444 adapter->hw.mac.get_link_status = 1; 1445 em_update_link_status(adapter); 1446 callout_reset(&adapter->timer, hz, 1447 em_local_timer, adapter); 1448 } 1449 } 1450 EM_CORE_UNLOCK(adapter); 1451 1452 em_rxeof(rxr, count, &rx_done); 1453 1454 EM_TX_LOCK(txr); 1455 em_txeof(txr); 1456#ifdef EM_MULTIQUEUE 1457 if (!drbr_empty(ifp, txr->br)) 1458 em_mq_start_locked(ifp, txr, NULL); 1459#else 1460 if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd)) 1461 em_start_locked(ifp, txr); 1462#endif 1463 EM_TX_UNLOCK(txr); 1464 1465 return (rx_done); 1466} 1467#endif /* DEVICE_POLLING */ 1468 1469 1470/********************************************************************* 1471 * 1472 * Fast Legacy/MSI Combined Interrupt Service routine 1473 * 1474 *********************************************************************/ 1475static int 1476em_irq_fast(void *arg) 1477{ 1478 struct adapter *adapter = arg; 1479 struct ifnet *ifp; 1480 u32 reg_icr; 1481 1482 ifp = adapter->ifp; 1483 1484 reg_icr = E1000_READ_REG(&adapter->hw, E1000_ICR); 1485 1486 /* Hot eject? */ 1487 if (reg_icr == 0xffffffff) 1488 return FILTER_STRAY; 1489 1490 /* Definitely not our interrupt. */ 1491 if (reg_icr == 0x0) 1492 return FILTER_STRAY; 1493 1494 /* 1495 * Starting with the 82571 chip, bit 31 should be used to 1496 * determine whether the interrupt belongs to us. 1497 */ 1498 if (adapter->hw.mac.type >= e1000_82571 && 1499 (reg_icr & E1000_ICR_INT_ASSERTED) == 0) 1500 return FILTER_STRAY; 1501 1502 em_disable_intr(adapter); 1503 taskqueue_enqueue(adapter->tq, &adapter->que_task); 1504 1505 /* Link status change */ 1506 if (reg_icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) { 1507 adapter->hw.mac.get_link_status = 1; 1508 taskqueue_enqueue(taskqueue_fast, &adapter->link_task); 1509 } 1510 1511 if (reg_icr & E1000_ICR_RXO) 1512 adapter->rx_overruns++; 1513 return FILTER_HANDLED; 1514} 1515 1516/* Combined RX/TX handler, used by Legacy and MSI */ 1517static void 1518em_handle_que(void *context, int pending) 1519{ 1520 struct adapter *adapter = context; 1521 struct ifnet *ifp = adapter->ifp; 1522 struct tx_ring *txr = adapter->tx_rings; 1523 struct rx_ring *rxr = adapter->rx_rings; 1524 1525 1526 if (ifp->if_drv_flags & IFF_DRV_RUNNING) { 1527 bool more = em_rxeof(rxr, adapter->rx_process_limit, NULL); 1528 EM_TX_LOCK(txr); 1529 em_txeof(txr); 1530#ifdef EM_MULTIQUEUE 1531 if (!drbr_empty(ifp, txr->br)) 1532 em_mq_start_locked(ifp, txr, NULL); 1533#else 1534 if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd)) 1535 em_start_locked(ifp, txr); 1536#endif 1537 EM_TX_UNLOCK(txr); 1538 if (more) { 1539 taskqueue_enqueue(adapter->tq, &adapter->que_task); 1540 return; 1541 } 1542 } 1543 1544 em_enable_intr(adapter); 1545 return; 1546} 1547 1548 1549/********************************************************************* 1550 * 1551 * MSIX Interrupt Service Routines 1552 * 1553 **********************************************************************/ 1554static void 1555em_msix_tx(void *arg) 1556{ 1557 struct tx_ring *txr = arg; 1558 struct adapter *adapter = txr->adapter; 1559 struct ifnet *ifp = adapter->ifp; 1560 1561 ++txr->tx_irq; 1562 EM_TX_LOCK(txr); 1563 em_txeof(txr); 1564#ifdef EM_MULTIQUEUE 1565 if (!drbr_empty(ifp, txr->br)) 1566 em_mq_start_locked(ifp, txr, NULL); 1567#else 1568 if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd)) 1569 em_start_locked(ifp, txr); 1570#endif 1571 /* Reenable this interrupt */ 1572 E1000_WRITE_REG(&adapter->hw, E1000_IMS, txr->ims); 1573 EM_TX_UNLOCK(txr); 1574 return; 1575} 1576 1577/********************************************************************* 1578 * 1579 * MSIX RX Interrupt Service routine 1580 * 1581 **********************************************************************/ 1582 1583static void 1584em_msix_rx(void *arg) 1585{ 1586 struct rx_ring *rxr = arg; 1587 struct adapter *adapter = rxr->adapter; 1588 bool more; 1589 1590 ++rxr->rx_irq; 1591 if (!(adapter->ifp->if_drv_flags & IFF_DRV_RUNNING)) 1592 return; 1593 more = em_rxeof(rxr, adapter->rx_process_limit, NULL); 1594 if (more) 1595 taskqueue_enqueue(rxr->tq, &rxr->rx_task); 1596 else 1597 /* Reenable this interrupt */ 1598 E1000_WRITE_REG(&adapter->hw, E1000_IMS, rxr->ims); 1599 return; 1600} 1601 1602/********************************************************************* 1603 * 1604 * MSIX Link Fast Interrupt Service routine 1605 * 1606 **********************************************************************/ 1607static void 1608em_msix_link(void *arg) 1609{ 1610 struct adapter *adapter = arg; 1611 u32 reg_icr; 1612 1613 ++adapter->link_irq; 1614 reg_icr = E1000_READ_REG(&adapter->hw, E1000_ICR); 1615 1616 if (reg_icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) { 1617 adapter->hw.mac.get_link_status = 1; 1618 em_handle_link(adapter, 0); 1619 } else 1620 E1000_WRITE_REG(&adapter->hw, E1000_IMS, 1621 EM_MSIX_LINK | E1000_IMS_LSC); 1622 return; 1623} 1624 1625static void 1626em_handle_rx(void *context, int pending) 1627{ 1628 struct rx_ring *rxr = context; 1629 struct adapter *adapter = rxr->adapter; 1630 bool more; 1631 1632 more = em_rxeof(rxr, adapter->rx_process_limit, NULL); 1633 if (more) 1634 taskqueue_enqueue(rxr->tq, &rxr->rx_task); 1635 else 1636 /* Reenable this interrupt */ 1637 E1000_WRITE_REG(&adapter->hw, E1000_IMS, rxr->ims); 1638} 1639 1640static void 1641em_handle_tx(void *context, int pending) 1642{ 1643 struct tx_ring *txr = context; 1644 struct adapter *adapter = txr->adapter; 1645 struct ifnet *ifp = adapter->ifp; 1646 1647 EM_TX_LOCK(txr); 1648 em_txeof(txr); 1649#ifdef EM_MULTIQUEUE 1650 if (!drbr_empty(ifp, txr->br)) 1651 em_mq_start_locked(ifp, txr, NULL); 1652#else 1653 if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd)) 1654 em_start_locked(ifp, txr); 1655#endif 1656 E1000_WRITE_REG(&adapter->hw, E1000_IMS, txr->ims); 1657 EM_TX_UNLOCK(txr); 1658} 1659 1660static void 1661em_handle_link(void *context, int pending) 1662{ 1663 struct adapter *adapter = context; 1664 struct tx_ring *txr = adapter->tx_rings; 1665 struct ifnet *ifp = adapter->ifp; 1666 1667 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) 1668 return; 1669 1670 EM_CORE_LOCK(adapter); 1671 callout_stop(&adapter->timer); 1672 em_update_link_status(adapter); 1673 callout_reset(&adapter->timer, hz, em_local_timer, adapter); 1674 E1000_WRITE_REG(&adapter->hw, E1000_IMS, 1675 EM_MSIX_LINK | E1000_IMS_LSC); 1676 if (adapter->link_active) { 1677 for (int i = 0; i < adapter->num_queues; i++, txr++) { 1678 EM_TX_LOCK(txr); 1679#ifdef EM_MULTIQUEUE 1680 if (!drbr_empty(ifp, txr->br)) 1681 em_mq_start_locked(ifp, txr, NULL); 1682#else 1683 if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd)) 1684 em_start_locked(ifp, txr); 1685#endif 1686 EM_TX_UNLOCK(txr); 1687 } 1688 } 1689 EM_CORE_UNLOCK(adapter); 1690} 1691 1692 1693/********************************************************************* 1694 * 1695 * Media Ioctl callback 1696 * 1697 * This routine is called whenever the user queries the status of 1698 * the interface using ifconfig. 1699 * 1700 **********************************************************************/ 1701static void 1702em_media_status(struct ifnet *ifp, struct ifmediareq *ifmr) 1703{ 1704 struct adapter *adapter = ifp->if_softc; 1705 u_char fiber_type = IFM_1000_SX; 1706 1707 INIT_DEBUGOUT("em_media_status: begin"); 1708 1709 EM_CORE_LOCK(adapter); 1710 em_update_link_status(adapter); 1711 1712 ifmr->ifm_status = IFM_AVALID; 1713 ifmr->ifm_active = IFM_ETHER; 1714 1715 if (!adapter->link_active) { 1716 EM_CORE_UNLOCK(adapter); 1717 return; 1718 } 1719 1720 ifmr->ifm_status |= IFM_ACTIVE; 1721 1722 if ((adapter->hw.phy.media_type == e1000_media_type_fiber) || 1723 (adapter->hw.phy.media_type == e1000_media_type_internal_serdes)) { 1724 ifmr->ifm_active |= fiber_type | IFM_FDX; 1725 } else { 1726 switch (adapter->link_speed) { 1727 case 10: 1728 ifmr->ifm_active |= IFM_10_T; 1729 break; 1730 case 100: 1731 ifmr->ifm_active |= IFM_100_TX; 1732 break; 1733 case 1000: 1734 ifmr->ifm_active |= IFM_1000_T; 1735 break; 1736 } 1737 if (adapter->link_duplex == FULL_DUPLEX) 1738 ifmr->ifm_active |= IFM_FDX; 1739 else 1740 ifmr->ifm_active |= IFM_HDX; 1741 } 1742 EM_CORE_UNLOCK(adapter); 1743} 1744 1745/********************************************************************* 1746 * 1747 * Media Ioctl callback 1748 * 1749 * This routine is called when the user changes speed/duplex using 1750 * media/mediopt option with ifconfig. 1751 * 1752 **********************************************************************/ 1753static int 1754em_media_change(struct ifnet *ifp) 1755{ 1756 struct adapter *adapter = ifp->if_softc; 1757 struct ifmedia *ifm = &adapter->media; 1758 1759 INIT_DEBUGOUT("em_media_change: begin"); 1760 1761 if (IFM_TYPE(ifm->ifm_media) != IFM_ETHER) 1762 return (EINVAL); 1763 1764 EM_CORE_LOCK(adapter); 1765 switch (IFM_SUBTYPE(ifm->ifm_media)) { 1766 case IFM_AUTO: 1767 adapter->hw.mac.autoneg = DO_AUTO_NEG; 1768 adapter->hw.phy.autoneg_advertised = AUTONEG_ADV_DEFAULT; 1769 break; 1770 case IFM_1000_LX: 1771 case IFM_1000_SX: 1772 case IFM_1000_T: 1773 adapter->hw.mac.autoneg = DO_AUTO_NEG; 1774 adapter->hw.phy.autoneg_advertised = ADVERTISE_1000_FULL; 1775 break; 1776 case IFM_100_TX: 1777 adapter->hw.mac.autoneg = FALSE; 1778 adapter->hw.phy.autoneg_advertised = 0; 1779 if ((ifm->ifm_media & IFM_GMASK) == IFM_FDX) 1780 adapter->hw.mac.forced_speed_duplex = ADVERTISE_100_FULL; 1781 else 1782 adapter->hw.mac.forced_speed_duplex = ADVERTISE_100_HALF; 1783 break; 1784 case IFM_10_T: 1785 adapter->hw.mac.autoneg = FALSE; 1786 adapter->hw.phy.autoneg_advertised = 0; 1787 if ((ifm->ifm_media & IFM_GMASK) == IFM_FDX) 1788 adapter->hw.mac.forced_speed_duplex = ADVERTISE_10_FULL; 1789 else 1790 adapter->hw.mac.forced_speed_duplex = ADVERTISE_10_HALF; 1791 break; 1792 default: 1793 device_printf(adapter->dev, "Unsupported media type\n"); 1794 } 1795 1796 em_init_locked(adapter); 1797 EM_CORE_UNLOCK(adapter); 1798 1799 return (0); 1800} 1801 1802/********************************************************************* 1803 * 1804 * This routine maps the mbufs to tx descriptors. 1805 * 1806 * return 0 on success, positive on failure 1807 **********************************************************************/ 1808 1809static int 1810em_xmit(struct tx_ring *txr, struct mbuf **m_headp) 1811{ 1812 struct adapter *adapter = txr->adapter; 1813 bus_dma_segment_t segs[EM_MAX_SCATTER]; 1814 bus_dmamap_t map; 1815 struct em_buffer *tx_buffer, *tx_buffer_mapped; 1816 struct e1000_tx_desc *ctxd = NULL; 1817 struct mbuf *m_head; 1818 struct ether_header *eh; 1819 struct ip *ip = NULL; 1820 struct tcphdr *tp = NULL; 1821 u32 txd_upper, txd_lower, txd_used, txd_saved; 1822 int ip_off, poff; 1823 int nsegs, i, j, first, last = 0; 1824 int error, do_tso, tso_desc = 0, remap = 1; 1825 1826retry: 1827 m_head = *m_headp; 1828 txd_upper = txd_lower = txd_used = txd_saved = 0; 1829 do_tso = ((m_head->m_pkthdr.csum_flags & CSUM_TSO) != 0); 1830 ip_off = poff = 0; 1831 1832 /* 1833 * Intel recommends entire IP/TCP header length reside in a single 1834 * buffer. If multiple descriptors are used to describe the IP and 1835 * TCP header, each descriptor should describe one or more 1836 * complete headers; descriptors referencing only parts of headers 1837 * are not supported. If all layer headers are not coalesced into 1838 * a single buffer, each buffer should not cross a 4KB boundary, 1839 * or be larger than the maximum read request size. 1840 * Controller also requires modifing IP/TCP header to make TSO work 1841 * so we firstly get a writable mbuf chain then coalesce ethernet/ 1842 * IP/TCP header into a single buffer to meet the requirement of 1843 * controller. This also simplifies IP/TCP/UDP checksum offloading 1844 * which also has similiar restrictions. 1845 */ 1846 if (do_tso || m_head->m_pkthdr.csum_flags & CSUM_OFFLOAD) { 1847 if (do_tso || (m_head->m_next != NULL && 1848 m_head->m_pkthdr.csum_flags & CSUM_OFFLOAD)) { 1849 if (M_WRITABLE(*m_headp) == 0) { 1850 m_head = m_dup(*m_headp, M_NOWAIT); 1851 m_freem(*m_headp); 1852 if (m_head == NULL) { 1853 *m_headp = NULL; 1854 return (ENOBUFS); 1855 } 1856 *m_headp = m_head; 1857 } 1858 } 1859 /* 1860 * XXX 1861 * Assume IPv4, we don't have TSO/checksum offload support 1862 * for IPv6 yet. 1863 */ 1864 ip_off = sizeof(struct ether_header); 1865 m_head = m_pullup(m_head, ip_off); 1866 if (m_head == NULL) { 1867 *m_headp = NULL; 1868 return (ENOBUFS); 1869 } 1870 eh = mtod(m_head, struct ether_header *); 1871 if (eh->ether_type == htons(ETHERTYPE_VLAN)) { 1872 ip_off = sizeof(struct ether_vlan_header); 1873 m_head = m_pullup(m_head, ip_off); 1874 if (m_head == NULL) { 1875 *m_headp = NULL; 1876 return (ENOBUFS); 1877 } 1878 } 1879 m_head = m_pullup(m_head, ip_off + sizeof(struct ip)); 1880 if (m_head == NULL) { 1881 *m_headp = NULL; 1882 return (ENOBUFS); 1883 } 1884 ip = (struct ip *)(mtod(m_head, char *) + ip_off); 1885 poff = ip_off + (ip->ip_hl << 2); 1886 if (do_tso) { 1887 m_head = m_pullup(m_head, poff + sizeof(struct tcphdr)); 1888 if (m_head == NULL) { 1889 *m_headp = NULL; 1890 return (ENOBUFS); 1891 } 1892 tp = (struct tcphdr *)(mtod(m_head, char *) + poff); 1893 /* 1894 * TSO workaround: 1895 * pull 4 more bytes of data into it. 1896 */ 1897 m_head = m_pullup(m_head, poff + (tp->th_off << 2) + 4); 1898 if (m_head == NULL) { 1899 *m_headp = NULL; 1900 return (ENOBUFS); 1901 } 1902 ip = (struct ip *)(mtod(m_head, char *) + ip_off); 1903 ip->ip_len = 0; 1904 ip->ip_sum = 0; 1905 /* 1906 * The pseudo TCP checksum does not include TCP payload 1907 * length so driver should recompute the checksum here 1908 * what hardware expect to see. This is adherence of 1909 * Microsoft's Large Send specification. 1910 */ 1911 tp = (struct tcphdr *)(mtod(m_head, char *) + poff); 1912 tp->th_sum = in_pseudo(ip->ip_src.s_addr, 1913 ip->ip_dst.s_addr, htons(IPPROTO_TCP)); 1914 } else if (m_head->m_pkthdr.csum_flags & CSUM_TCP) { 1915 m_head = m_pullup(m_head, poff + sizeof(struct tcphdr)); 1916 if (m_head == NULL) { 1917 *m_headp = NULL; 1918 return (ENOBUFS); 1919 } 1920 tp = (struct tcphdr *)(mtod(m_head, char *) + poff); 1921 m_head = m_pullup(m_head, poff + (tp->th_off << 2)); 1922 if (m_head == NULL) { 1923 *m_headp = NULL; 1924 return (ENOBUFS); 1925 } 1926 ip = (struct ip *)(mtod(m_head, char *) + ip_off); 1927 tp = (struct tcphdr *)(mtod(m_head, char *) + poff); 1928 } else if (m_head->m_pkthdr.csum_flags & CSUM_UDP) { 1929 m_head = m_pullup(m_head, poff + sizeof(struct udphdr)); 1930 if (m_head == NULL) { 1931 *m_headp = NULL; 1932 return (ENOBUFS); 1933 } 1934 ip = (struct ip *)(mtod(m_head, char *) + ip_off); 1935 } 1936 *m_headp = m_head; 1937 } 1938 1939 /* 1940 * Map the packet for DMA 1941 * 1942 * Capture the first descriptor index, 1943 * this descriptor will have the index 1944 * of the EOP which is the only one that 1945 * now gets a DONE bit writeback. 1946 */ 1947 first = txr->next_avail_desc; 1948 tx_buffer = &txr->tx_buffers[first]; 1949 tx_buffer_mapped = tx_buffer; 1950 map = tx_buffer->map; 1951 1952 error = bus_dmamap_load_mbuf_sg(txr->txtag, map, 1953 *m_headp, segs, &nsegs, BUS_DMA_NOWAIT); 1954 1955 /* 1956 * There are two types of errors we can (try) to handle: 1957 * - EFBIG means the mbuf chain was too long and bus_dma ran 1958 * out of segments. Defragment the mbuf chain and try again. 1959 * - ENOMEM means bus_dma could not obtain enough bounce buffers 1960 * at this point in time. Defer sending and try again later. 1961 * All other errors, in particular EINVAL, are fatal and prevent the 1962 * mbuf chain from ever going through. Drop it and report error. 1963 */ 1964 if (error == EFBIG && remap) { 1965 struct mbuf *m; 1966 1967 m = m_defrag(*m_headp, M_NOWAIT); 1968 if (m == NULL) { 1969 adapter->mbuf_alloc_failed++; 1970 m_freem(*m_headp); 1971 *m_headp = NULL; 1972 return (ENOBUFS); 1973 } 1974 *m_headp = m; 1975 1976 /* Try it again, but only once */ 1977 remap = 0; 1978 goto retry; 1979 } else if (error == ENOMEM) { 1980 adapter->no_tx_dma_setup++; 1981 return (error); 1982 } else if (error != 0) { 1983 adapter->no_tx_dma_setup++; 1984 m_freem(*m_headp); 1985 *m_headp = NULL; 1986 return (error); 1987 } 1988 1989 /* 1990 * TSO Hardware workaround, if this packet is not 1991 * TSO, and is only a single descriptor long, and 1992 * it follows a TSO burst, then we need to add a 1993 * sentinel descriptor to prevent premature writeback. 1994 */ 1995 if ((do_tso == 0) && (txr->tx_tso == TRUE)) { 1996 if (nsegs == 1) 1997 tso_desc = TRUE; 1998 txr->tx_tso = FALSE; 1999 } 2000 2001 if (nsegs > (txr->tx_avail - 2)) { 2002 txr->no_desc_avail++; 2003 bus_dmamap_unload(txr->txtag, map); 2004 return (ENOBUFS); 2005 } 2006 m_head = *m_headp; 2007 2008 /* Do hardware assists */ 2009 if (m_head->m_pkthdr.csum_flags & CSUM_TSO) { 2010 em_tso_setup(txr, m_head, ip_off, ip, tp, 2011 &txd_upper, &txd_lower); 2012 /* we need to make a final sentinel transmit desc */ 2013 tso_desc = TRUE; 2014 } else if (m_head->m_pkthdr.csum_flags & CSUM_OFFLOAD) 2015 em_transmit_checksum_setup(txr, m_head, 2016 ip_off, ip, &txd_upper, &txd_lower); 2017 2018 if (m_head->m_flags & M_VLANTAG) { 2019 /* Set the vlan id. */ 2020 txd_upper |= 2021 (htole16(m_head->m_pkthdr.ether_vtag) << 16); 2022 /* Tell hardware to add tag */ 2023 txd_lower |= htole32(E1000_TXD_CMD_VLE); 2024 } 2025 2026 i = txr->next_avail_desc; 2027 2028 /* Set up our transmit descriptors */ 2029 for (j = 0; j < nsegs; j++) { 2030 bus_size_t seg_len; 2031 bus_addr_t seg_addr; 2032 2033 tx_buffer = &txr->tx_buffers[i]; 2034 ctxd = &txr->tx_base[i]; 2035 seg_addr = segs[j].ds_addr; 2036 seg_len = segs[j].ds_len; 2037 /* 2038 ** TSO Workaround: 2039 ** If this is the last descriptor, we want to 2040 ** split it so we have a small final sentinel 2041 */ 2042 if (tso_desc && (j == (nsegs -1)) && (seg_len > 8)) { 2043 seg_len -= 4; 2044 ctxd->buffer_addr = htole64(seg_addr); 2045 ctxd->lower.data = htole32( 2046 adapter->txd_cmd | txd_lower | seg_len); 2047 ctxd->upper.data = 2048 htole32(txd_upper); 2049 if (++i == adapter->num_tx_desc) 2050 i = 0; 2051 /* Now make the sentinel */ 2052 ++txd_used; /* using an extra txd */ 2053 ctxd = &txr->tx_base[i]; 2054 tx_buffer = &txr->tx_buffers[i]; 2055 ctxd->buffer_addr = 2056 htole64(seg_addr + seg_len); 2057 ctxd->lower.data = htole32( 2058 adapter->txd_cmd | txd_lower | 4); 2059 ctxd->upper.data = 2060 htole32(txd_upper); 2061 last = i; 2062 if (++i == adapter->num_tx_desc) 2063 i = 0; 2064 } else { 2065 ctxd->buffer_addr = htole64(seg_addr); 2066 ctxd->lower.data = htole32( 2067 adapter->txd_cmd | txd_lower | seg_len); 2068 ctxd->upper.data = 2069 htole32(txd_upper); 2070 last = i; 2071 if (++i == adapter->num_tx_desc) 2072 i = 0; 2073 } 2074 tx_buffer->m_head = NULL; 2075 tx_buffer->next_eop = -1; 2076 } 2077 2078 txr->next_avail_desc = i; 2079 txr->tx_avail -= nsegs; 2080 if (tso_desc) /* TSO used an extra for sentinel */ 2081 txr->tx_avail -= txd_used; 2082 2083 tx_buffer->m_head = m_head; 2084 /* 2085 ** Here we swap the map so the last descriptor, 2086 ** which gets the completion interrupt has the 2087 ** real map, and the first descriptor gets the 2088 ** unused map from this descriptor. 2089 */ 2090 tx_buffer_mapped->map = tx_buffer->map; 2091 tx_buffer->map = map; 2092 bus_dmamap_sync(txr->txtag, map, BUS_DMASYNC_PREWRITE); 2093 2094 /* 2095 * Last Descriptor of Packet 2096 * needs End Of Packet (EOP) 2097 * and Report Status (RS) 2098 */ 2099 ctxd->lower.data |= 2100 htole32(E1000_TXD_CMD_EOP | E1000_TXD_CMD_RS); 2101 /* 2102 * Keep track in the first buffer which 2103 * descriptor will be written back 2104 */ 2105 tx_buffer = &txr->tx_buffers[first]; 2106 tx_buffer->next_eop = last; 2107 /* Update the watchdog time early and often */ 2108 txr->watchdog_time = ticks; 2109 2110 /* 2111 * Advance the Transmit Descriptor Tail (TDT), this tells the E1000 2112 * that this frame is available to transmit. 2113 */ 2114 bus_dmamap_sync(txr->txdma.dma_tag, txr->txdma.dma_map, 2115 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 2116 E1000_WRITE_REG(&adapter->hw, E1000_TDT(txr->me), i); 2117 2118 return (0); 2119} 2120 2121static void 2122em_set_promisc(struct adapter *adapter) 2123{ 2124 struct ifnet *ifp = adapter->ifp; 2125 u32 reg_rctl; 2126 2127 reg_rctl = E1000_READ_REG(&adapter->hw, E1000_RCTL); 2128 2129 if (ifp->if_flags & IFF_PROMISC) { 2130 reg_rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE); 2131 /* Turn this on if you want to see bad packets */ 2132 if (em_debug_sbp) 2133 reg_rctl |= E1000_RCTL_SBP; 2134 E1000_WRITE_REG(&adapter->hw, E1000_RCTL, reg_rctl); 2135 } else if (ifp->if_flags & IFF_ALLMULTI) { 2136 reg_rctl |= E1000_RCTL_MPE; 2137 reg_rctl &= ~E1000_RCTL_UPE; 2138 E1000_WRITE_REG(&adapter->hw, E1000_RCTL, reg_rctl); 2139 } 2140} 2141 2142static void 2143em_disable_promisc(struct adapter *adapter) 2144{ 2145 struct ifnet *ifp = adapter->ifp; 2146 u32 reg_rctl; 2147 int mcnt = 0; 2148 2149 reg_rctl = E1000_READ_REG(&adapter->hw, E1000_RCTL); 2150 reg_rctl &= (~E1000_RCTL_UPE); 2151 if (ifp->if_flags & IFF_ALLMULTI) 2152 mcnt = MAX_NUM_MULTICAST_ADDRESSES; 2153 else { 2154 struct ifmultiaddr *ifma; 2155#if __FreeBSD_version < 800000 2156 IF_ADDR_LOCK(ifp); 2157#else 2158 if_maddr_rlock(ifp); 2159#endif 2160 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) { 2161 if (ifma->ifma_addr->sa_family != AF_LINK) 2162 continue; 2163 if (mcnt == MAX_NUM_MULTICAST_ADDRESSES) 2164 break; 2165 mcnt++; 2166 } 2167#if __FreeBSD_version < 800000 2168 IF_ADDR_UNLOCK(ifp); 2169#else 2170 if_maddr_runlock(ifp); 2171#endif 2172 } 2173 /* Don't disable if in MAX groups */ 2174 if (mcnt < MAX_NUM_MULTICAST_ADDRESSES) 2175 reg_rctl &= (~E1000_RCTL_MPE); 2176 reg_rctl &= (~E1000_RCTL_SBP); 2177 E1000_WRITE_REG(&adapter->hw, E1000_RCTL, reg_rctl); 2178} 2179 2180 2181/********************************************************************* 2182 * Multicast Update 2183 * 2184 * This routine is called whenever multicast address list is updated. 2185 * 2186 **********************************************************************/ 2187 2188static void 2189em_set_multi(struct adapter *adapter) 2190{ 2191 struct ifnet *ifp = adapter->ifp; 2192 struct ifmultiaddr *ifma; 2193 u32 reg_rctl = 0; 2194 u8 *mta; /* Multicast array memory */ 2195 int mcnt = 0; 2196 2197 IOCTL_DEBUGOUT("em_set_multi: begin"); 2198 2199 mta = adapter->mta; 2200 bzero(mta, sizeof(u8) * ETH_ADDR_LEN * MAX_NUM_MULTICAST_ADDRESSES); 2201 2202 if (adapter->hw.mac.type == e1000_82542 && 2203 adapter->hw.revision_id == E1000_REVISION_2) { 2204 reg_rctl = E1000_READ_REG(&adapter->hw, E1000_RCTL); 2205 if (adapter->hw.bus.pci_cmd_word & CMD_MEM_WRT_INVALIDATE) 2206 e1000_pci_clear_mwi(&adapter->hw); 2207 reg_rctl |= E1000_RCTL_RST; 2208 E1000_WRITE_REG(&adapter->hw, E1000_RCTL, reg_rctl); 2209 msec_delay(5); 2210 } 2211 2212#if __FreeBSD_version < 800000 2213 IF_ADDR_LOCK(ifp); 2214#else 2215 if_maddr_rlock(ifp); 2216#endif 2217 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) { 2218 if (ifma->ifma_addr->sa_family != AF_LINK) 2219 continue; 2220 2221 if (mcnt == MAX_NUM_MULTICAST_ADDRESSES) 2222 break; 2223 2224 bcopy(LLADDR((struct sockaddr_dl *)ifma->ifma_addr), 2225 &mta[mcnt * ETH_ADDR_LEN], ETH_ADDR_LEN); 2226 mcnt++; 2227 } 2228#if __FreeBSD_version < 800000 2229 IF_ADDR_UNLOCK(ifp); 2230#else 2231 if_maddr_runlock(ifp); 2232#endif 2233 if (mcnt >= MAX_NUM_MULTICAST_ADDRESSES) { 2234 reg_rctl = E1000_READ_REG(&adapter->hw, E1000_RCTL); 2235 reg_rctl |= E1000_RCTL_MPE; 2236 E1000_WRITE_REG(&adapter->hw, E1000_RCTL, reg_rctl); 2237 } else 2238 e1000_update_mc_addr_list(&adapter->hw, mta, mcnt); 2239 2240 if (adapter->hw.mac.type == e1000_82542 && 2241 adapter->hw.revision_id == E1000_REVISION_2) { 2242 reg_rctl = E1000_READ_REG(&adapter->hw, E1000_RCTL); 2243 reg_rctl &= ~E1000_RCTL_RST; 2244 E1000_WRITE_REG(&adapter->hw, E1000_RCTL, reg_rctl); 2245 msec_delay(5); 2246 if (adapter->hw.bus.pci_cmd_word & CMD_MEM_WRT_INVALIDATE) 2247 e1000_pci_set_mwi(&adapter->hw); 2248 } 2249} 2250 2251 2252/********************************************************************* 2253 * Timer routine 2254 * 2255 * This routine checks for link status and updates statistics. 2256 * 2257 **********************************************************************/ 2258 2259static void 2260em_local_timer(void *arg) 2261{ 2262 struct adapter *adapter = arg; 2263 struct ifnet *ifp = adapter->ifp; 2264 struct tx_ring *txr = adapter->tx_rings; 2265 struct rx_ring *rxr = adapter->rx_rings; 2266 u32 trigger; 2267 2268 EM_CORE_LOCK_ASSERT(adapter); 2269 2270 em_update_link_status(adapter); 2271 em_update_stats_counters(adapter); 2272 2273 /* Reset LAA into RAR[0] on 82571 */ 2274 if ((adapter->hw.mac.type == e1000_82571) && 2275 e1000_get_laa_state_82571(&adapter->hw)) 2276 e1000_rar_set(&adapter->hw, adapter->hw.mac.addr, 0); 2277 2278 /* Mask to use in the irq trigger */ 2279 if (adapter->msix_mem) 2280 trigger = rxr->ims; 2281 else 2282 trigger = E1000_ICS_RXDMT0; 2283 2284 /* 2285 ** Check on the state of the TX queue(s), this 2286 ** can be done without the lock because its RO 2287 ** and the HUNG state will be static if set. 2288 */ 2289 for (int i = 0; i < adapter->num_queues; i++, txr++) { 2290 if ((txr->queue_status == EM_QUEUE_HUNG) && 2291 (adapter->pause_frames == 0)) 2292 goto hung; 2293 /* Schedule a TX tasklet if needed */ 2294 if (txr->tx_avail <= EM_MAX_SCATTER) 2295 taskqueue_enqueue(txr->tq, &txr->tx_task); 2296 } 2297 2298 adapter->pause_frames = 0; 2299 callout_reset(&adapter->timer, hz, em_local_timer, adapter); 2300#ifndef DEVICE_POLLING 2301 /* Trigger an RX interrupt to guarantee mbuf refresh */ 2302 E1000_WRITE_REG(&adapter->hw, E1000_ICS, trigger); 2303#endif 2304 return; 2305hung: 2306 /* Looks like we're hung */ 2307 device_printf(adapter->dev, "Watchdog timeout -- resetting\n"); 2308 device_printf(adapter->dev, 2309 "Queue(%d) tdh = %d, hw tdt = %d\n", txr->me, 2310 E1000_READ_REG(&adapter->hw, E1000_TDH(txr->me)), 2311 E1000_READ_REG(&adapter->hw, E1000_TDT(txr->me))); 2312 device_printf(adapter->dev,"TX(%d) desc avail = %d," 2313 "Next TX to Clean = %d\n", 2314 txr->me, txr->tx_avail, txr->next_to_clean); 2315 ifp->if_drv_flags &= ~IFF_DRV_RUNNING; 2316 adapter->watchdog_events++; 2317 adapter->pause_frames = 0; 2318 em_init_locked(adapter); 2319} 2320 2321 2322static void 2323em_update_link_status(struct adapter *adapter) 2324{ 2325 struct e1000_hw *hw = &adapter->hw; 2326 struct ifnet *ifp = adapter->ifp; 2327 device_t dev = adapter->dev; 2328 struct tx_ring *txr = adapter->tx_rings; 2329 u32 link_check = 0; 2330 2331 /* Get the cached link value or read phy for real */ 2332 switch (hw->phy.media_type) { 2333 case e1000_media_type_copper: 2334 if (hw->mac.get_link_status) { 2335 /* Do the work to read phy */ 2336 e1000_check_for_link(hw); 2337 link_check = !hw->mac.get_link_status; 2338 if (link_check) /* ESB2 fix */ 2339 e1000_cfg_on_link_up(hw); 2340 } else 2341 link_check = TRUE; 2342 break; 2343 case e1000_media_type_fiber: 2344 e1000_check_for_link(hw); 2345 link_check = (E1000_READ_REG(hw, E1000_STATUS) & 2346 E1000_STATUS_LU); 2347 break; 2348 case e1000_media_type_internal_serdes: 2349 e1000_check_for_link(hw); 2350 link_check = adapter->hw.mac.serdes_has_link; 2351 break; 2352 default: 2353 case e1000_media_type_unknown: 2354 break; 2355 } 2356 2357 /* Now check for a transition */ 2358 if (link_check && (adapter->link_active == 0)) { 2359 e1000_get_speed_and_duplex(hw, &adapter->link_speed, 2360 &adapter->link_duplex); 2361 /* Check if we must disable SPEED_MODE bit on PCI-E */ 2362 if ((adapter->link_speed != SPEED_1000) && 2363 ((hw->mac.type == e1000_82571) || 2364 (hw->mac.type == e1000_82572))) { 2365 int tarc0; 2366 tarc0 = E1000_READ_REG(hw, E1000_TARC(0)); 2367 tarc0 &= ~SPEED_MODE_BIT; 2368 E1000_WRITE_REG(hw, E1000_TARC(0), tarc0); 2369 } 2370 if (bootverbose) 2371 device_printf(dev, "Link is up %d Mbps %s\n", 2372 adapter->link_speed, 2373 ((adapter->link_duplex == FULL_DUPLEX) ? 2374 "Full Duplex" : "Half Duplex")); 2375 adapter->link_active = 1; 2376 adapter->smartspeed = 0; 2377 ifp->if_baudrate = adapter->link_speed * 1000000; 2378 if_link_state_change(ifp, LINK_STATE_UP); 2379 } else if (!link_check && (adapter->link_active == 1)) { 2380 ifp->if_baudrate = adapter->link_speed = 0; 2381 adapter->link_duplex = 0; 2382 if (bootverbose) 2383 device_printf(dev, "Link is Down\n"); 2384 adapter->link_active = 0; 2385 /* Link down, disable watchdog */ 2386 for (int i = 0; i < adapter->num_queues; i++, txr++) 2387 txr->queue_status = EM_QUEUE_IDLE; 2388 if_link_state_change(ifp, LINK_STATE_DOWN); 2389 } 2390} 2391 2392/********************************************************************* 2393 * 2394 * This routine disables all traffic on the adapter by issuing a 2395 * global reset on the MAC and deallocates TX/RX buffers. 2396 * 2397 * This routine should always be called with BOTH the CORE 2398 * and TX locks. 2399 **********************************************************************/ 2400 2401static void 2402em_stop(void *arg) 2403{ 2404 struct adapter *adapter = arg; 2405 struct ifnet *ifp = adapter->ifp; 2406 struct tx_ring *txr = adapter->tx_rings; 2407 2408 EM_CORE_LOCK_ASSERT(adapter); 2409 2410 INIT_DEBUGOUT("em_stop: begin"); 2411 2412 em_disable_intr(adapter); 2413 callout_stop(&adapter->timer); 2414 2415 /* Tell the stack that the interface is no longer active */ 2416 ifp->if_drv_flags &= ~IFF_DRV_RUNNING; 2417 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 2418 2419 /* Unarm watchdog timer. */ 2420 for (int i = 0; i < adapter->num_queues; i++, txr++) { 2421 EM_TX_LOCK(txr); 2422 txr->queue_status = EM_QUEUE_IDLE; 2423 EM_TX_UNLOCK(txr); 2424 } 2425 2426 e1000_reset_hw(&adapter->hw); 2427 E1000_WRITE_REG(&adapter->hw, E1000_WUC, 0); 2428 2429 e1000_led_off(&adapter->hw); 2430 e1000_cleanup_led(&adapter->hw); 2431} 2432 2433 2434/********************************************************************* 2435 * 2436 * Determine hardware revision. 2437 * 2438 **********************************************************************/ 2439static void 2440em_identify_hardware(struct adapter *adapter) 2441{ 2442 device_t dev = adapter->dev; 2443 2444 /* Make sure our PCI config space has the necessary stuff set */ 2445 pci_enable_busmaster(dev); 2446 adapter->hw.bus.pci_cmd_word = pci_read_config(dev, PCIR_COMMAND, 2); 2447 2448 /* Save off the information about this board */ 2449 adapter->hw.vendor_id = pci_get_vendor(dev); 2450 adapter->hw.device_id = pci_get_device(dev); 2451 adapter->hw.revision_id = pci_read_config(dev, PCIR_REVID, 1); 2452 adapter->hw.subsystem_vendor_id = 2453 pci_read_config(dev, PCIR_SUBVEND_0, 2); 2454 adapter->hw.subsystem_device_id = 2455 pci_read_config(dev, PCIR_SUBDEV_0, 2); 2456 2457 /* Do Shared Code Init and Setup */ 2458 if (e1000_set_mac_type(&adapter->hw)) { 2459 device_printf(dev, "Setup init failure\n"); 2460 return; 2461 } 2462} 2463 2464static int 2465em_allocate_pci_resources(struct adapter *adapter) 2466{ 2467 device_t dev = adapter->dev; 2468 int rid; 2469 2470 rid = PCIR_BAR(0); 2471 adapter->memory = bus_alloc_resource_any(dev, SYS_RES_MEMORY, 2472 &rid, RF_ACTIVE); 2473 if (adapter->memory == NULL) { 2474 device_printf(dev, "Unable to allocate bus resource: memory\n"); 2475 return (ENXIO); 2476 } 2477 adapter->osdep.mem_bus_space_tag = 2478 rman_get_bustag(adapter->memory); 2479 adapter->osdep.mem_bus_space_handle = 2480 rman_get_bushandle(adapter->memory); 2481 adapter->hw.hw_addr = (u8 *)&adapter->osdep.mem_bus_space_handle; 2482 2483 /* Default to a single queue */ 2484 adapter->num_queues = 1; 2485 2486 /* 2487 * Setup MSI/X or MSI if PCI Express 2488 */ 2489 adapter->msix = em_setup_msix(adapter); 2490 2491 adapter->hw.back = &adapter->osdep; 2492 2493 return (0); 2494} 2495 2496/********************************************************************* 2497 * 2498 * Setup the Legacy or MSI Interrupt handler 2499 * 2500 **********************************************************************/ 2501int 2502em_allocate_legacy(struct adapter *adapter) 2503{ 2504 device_t dev = adapter->dev; 2505 struct tx_ring *txr = adapter->tx_rings; 2506 int error, rid = 0; 2507 2508 /* Manually turn off all interrupts */ 2509 E1000_WRITE_REG(&adapter->hw, E1000_IMC, 0xffffffff); 2510 2511 if (adapter->msix == 1) /* using MSI */ 2512 rid = 1; 2513 /* We allocate a single interrupt resource */ 2514 adapter->res = bus_alloc_resource_any(dev, 2515 SYS_RES_IRQ, &rid, RF_SHAREABLE | RF_ACTIVE); 2516 if (adapter->res == NULL) { 2517 device_printf(dev, "Unable to allocate bus resource: " 2518 "interrupt\n"); 2519 return (ENXIO); 2520 } 2521 2522 /* 2523 * Allocate a fast interrupt and the associated 2524 * deferred processing contexts. 2525 */ 2526 TASK_INIT(&adapter->que_task, 0, em_handle_que, adapter); 2527 adapter->tq = taskqueue_create_fast("em_taskq", M_NOWAIT, 2528 taskqueue_thread_enqueue, &adapter->tq); 2529 taskqueue_start_threads(&adapter->tq, 1, PI_NET, "%s que", 2530 device_get_nameunit(adapter->dev)); 2531 /* Use a TX only tasklet for local timer */ 2532 TASK_INIT(&txr->tx_task, 0, em_handle_tx, txr); 2533 txr->tq = taskqueue_create_fast("em_txq", M_NOWAIT, 2534 taskqueue_thread_enqueue, &txr->tq); 2535 taskqueue_start_threads(&txr->tq, 1, PI_NET, "%s txq", 2536 device_get_nameunit(adapter->dev)); 2537 TASK_INIT(&adapter->link_task, 0, em_handle_link, adapter); 2538 if ((error = bus_setup_intr(dev, adapter->res, INTR_TYPE_NET, 2539 em_irq_fast, NULL, adapter, &adapter->tag)) != 0) { 2540 device_printf(dev, "Failed to register fast interrupt " 2541 "handler: %d\n", error); 2542 taskqueue_free(adapter->tq); 2543 adapter->tq = NULL; 2544 return (error); 2545 } 2546 2547 return (0); 2548} 2549 2550/********************************************************************* 2551 * 2552 * Setup the MSIX Interrupt handlers 2553 * This is not really Multiqueue, rather 2554 * its just seperate interrupt vectors 2555 * for TX, RX, and Link. 2556 * 2557 **********************************************************************/ 2558int 2559em_allocate_msix(struct adapter *adapter) 2560{ 2561 device_t dev = adapter->dev; 2562 struct tx_ring *txr = adapter->tx_rings; 2563 struct rx_ring *rxr = adapter->rx_rings; 2564 int error, rid, vector = 0; 2565 2566 2567 /* Make sure all interrupts are disabled */ 2568 E1000_WRITE_REG(&adapter->hw, E1000_IMC, 0xffffffff); 2569 2570 /* First set up ring resources */ 2571 for (int i = 0; i < adapter->num_queues; i++, txr++, rxr++) { 2572 2573 /* RX ring */ 2574 rid = vector + 1; 2575 2576 rxr->res = bus_alloc_resource_any(dev, 2577 SYS_RES_IRQ, &rid, RF_ACTIVE); 2578 if (rxr->res == NULL) { 2579 device_printf(dev, 2580 "Unable to allocate bus resource: " 2581 "RX MSIX Interrupt %d\n", i); 2582 return (ENXIO); 2583 } 2584 if ((error = bus_setup_intr(dev, rxr->res, 2585 INTR_TYPE_NET | INTR_MPSAFE, NULL, em_msix_rx, 2586 rxr, &rxr->tag)) != 0) { 2587 device_printf(dev, "Failed to register RX handler"); 2588 return (error); 2589 } 2590#if __FreeBSD_version >= 800504 2591 bus_describe_intr(dev, rxr->res, rxr->tag, "rx %d", i); 2592#endif 2593 rxr->msix = vector++; /* NOTE increment vector for TX */ 2594 TASK_INIT(&rxr->rx_task, 0, em_handle_rx, rxr); 2595 rxr->tq = taskqueue_create_fast("em_rxq", M_NOWAIT, 2596 taskqueue_thread_enqueue, &rxr->tq); 2597 taskqueue_start_threads(&rxr->tq, 1, PI_NET, "%s rxq", 2598 device_get_nameunit(adapter->dev)); 2599 /* 2600 ** Set the bit to enable interrupt 2601 ** in E1000_IMS -- bits 20 and 21 2602 ** are for RX0 and RX1, note this has 2603 ** NOTHING to do with the MSIX vector 2604 */ 2605 rxr->ims = 1 << (20 + i); 2606 adapter->ivars |= (8 | rxr->msix) << (i * 4); 2607 2608 /* TX ring */ 2609 rid = vector + 1; 2610 txr->res = bus_alloc_resource_any(dev, 2611 SYS_RES_IRQ, &rid, RF_ACTIVE); 2612 if (txr->res == NULL) { 2613 device_printf(dev, 2614 "Unable to allocate bus resource: " 2615 "TX MSIX Interrupt %d\n", i); 2616 return (ENXIO); 2617 } 2618 if ((error = bus_setup_intr(dev, txr->res, 2619 INTR_TYPE_NET | INTR_MPSAFE, NULL, em_msix_tx, 2620 txr, &txr->tag)) != 0) { 2621 device_printf(dev, "Failed to register TX handler"); 2622 return (error); 2623 } 2624#if __FreeBSD_version >= 800504 2625 bus_describe_intr(dev, txr->res, txr->tag, "tx %d", i); 2626#endif 2627 txr->msix = vector++; /* Increment vector for next pass */ 2628 TASK_INIT(&txr->tx_task, 0, em_handle_tx, txr); 2629 txr->tq = taskqueue_create_fast("em_txq", M_NOWAIT, 2630 taskqueue_thread_enqueue, &txr->tq); 2631 taskqueue_start_threads(&txr->tq, 1, PI_NET, "%s txq", 2632 device_get_nameunit(adapter->dev)); 2633 /* 2634 ** Set the bit to enable interrupt 2635 ** in E1000_IMS -- bits 22 and 23 2636 ** are for TX0 and TX1, note this has 2637 ** NOTHING to do with the MSIX vector 2638 */ 2639 txr->ims = 1 << (22 + i); 2640 adapter->ivars |= (8 | txr->msix) << (8 + (i * 4)); 2641 } 2642 2643 /* Link interrupt */ 2644 ++rid; 2645 adapter->res = bus_alloc_resource_any(dev, 2646 SYS_RES_IRQ, &rid, RF_ACTIVE); 2647 if (!adapter->res) { 2648 device_printf(dev,"Unable to allocate " 2649 "bus resource: Link interrupt [%d]\n", rid); 2650 return (ENXIO); 2651 } 2652 /* Set the link handler function */ 2653 error = bus_setup_intr(dev, adapter->res, 2654 INTR_TYPE_NET | INTR_MPSAFE, NULL, 2655 em_msix_link, adapter, &adapter->tag); 2656 if (error) { 2657 adapter->res = NULL; 2658 device_printf(dev, "Failed to register LINK handler"); 2659 return (error); 2660 } 2661#if __FreeBSD_version >= 800504 2662 bus_describe_intr(dev, adapter->res, adapter->tag, "link"); 2663#endif 2664 adapter->linkvec = vector; 2665 adapter->ivars |= (8 | vector) << 16; 2666 adapter->ivars |= 0x80000000; 2667 2668 return (0); 2669} 2670 2671 2672static void 2673em_free_pci_resources(struct adapter *adapter) 2674{ 2675 device_t dev = adapter->dev; 2676 struct tx_ring *txr; 2677 struct rx_ring *rxr; 2678 int rid; 2679 2680 2681 /* 2682 ** Release all the queue interrupt resources: 2683 */ 2684 for (int i = 0; i < adapter->num_queues; i++) { 2685 txr = &adapter->tx_rings[i]; 2686 rxr = &adapter->rx_rings[i]; 2687 /* an early abort? */ 2688 if ((txr == NULL) || (rxr == NULL)) 2689 break; 2690 rid = txr->msix +1; 2691 if (txr->tag != NULL) { 2692 bus_teardown_intr(dev, txr->res, txr->tag); 2693 txr->tag = NULL; 2694 } 2695 if (txr->res != NULL) 2696 bus_release_resource(dev, SYS_RES_IRQ, 2697 rid, txr->res); 2698 rid = rxr->msix +1; 2699 if (rxr->tag != NULL) { 2700 bus_teardown_intr(dev, rxr->res, rxr->tag); 2701 rxr->tag = NULL; 2702 } 2703 if (rxr->res != NULL) 2704 bus_release_resource(dev, SYS_RES_IRQ, 2705 rid, rxr->res); 2706 } 2707 2708 if (adapter->linkvec) /* we are doing MSIX */ 2709 rid = adapter->linkvec + 1; 2710 else 2711 (adapter->msix != 0) ? (rid = 1):(rid = 0); 2712 2713 if (adapter->tag != NULL) { 2714 bus_teardown_intr(dev, adapter->res, adapter->tag); 2715 adapter->tag = NULL; 2716 } 2717 2718 if (adapter->res != NULL) 2719 bus_release_resource(dev, SYS_RES_IRQ, rid, adapter->res); 2720 2721 2722 if (adapter->msix) 2723 pci_release_msi(dev); 2724 2725 if (adapter->msix_mem != NULL) 2726 bus_release_resource(dev, SYS_RES_MEMORY, 2727 PCIR_BAR(EM_MSIX_BAR), adapter->msix_mem); 2728 2729 if (adapter->memory != NULL) 2730 bus_release_resource(dev, SYS_RES_MEMORY, 2731 PCIR_BAR(0), adapter->memory); 2732 2733 if (adapter->flash != NULL) 2734 bus_release_resource(dev, SYS_RES_MEMORY, 2735 EM_FLASH, adapter->flash); 2736} 2737 2738/* 2739 * Setup MSI or MSI/X 2740 */ 2741static int 2742em_setup_msix(struct adapter *adapter) 2743{ 2744 device_t dev = adapter->dev; 2745 int val; 2746 2747 /* 2748 ** Setup MSI/X for Hartwell: tests have shown 2749 ** use of two queues to be unstable, and to 2750 ** provide no great gain anyway, so we simply 2751 ** seperate the interrupts and use a single queue. 2752 */ 2753 if ((adapter->hw.mac.type == e1000_82574) && 2754 (em_enable_msix == TRUE)) { 2755 /* Map the MSIX BAR */ 2756 int rid = PCIR_BAR(EM_MSIX_BAR); 2757 adapter->msix_mem = bus_alloc_resource_any(dev, 2758 SYS_RES_MEMORY, &rid, RF_ACTIVE); 2759 if (adapter->msix_mem == NULL) { 2760 /* May not be enabled */ 2761 device_printf(adapter->dev, 2762 "Unable to map MSIX table \n"); 2763 goto msi; 2764 } 2765 val = pci_msix_count(dev); 2766 /* We only need/want 3 vectors */ 2767 if (val >= 3) 2768 val = 3; 2769 else { 2770 device_printf(adapter->dev, 2771 "MSIX: insufficient vectors, using MSI\n"); 2772 goto msi; 2773 } 2774 2775 if ((pci_alloc_msix(dev, &val) == 0) && (val == 3)) { 2776 device_printf(adapter->dev, 2777 "Using MSIX interrupts " 2778 "with %d vectors\n", val); 2779 return (val); 2780 } 2781 2782 /* 2783 ** If MSIX alloc failed or provided us with 2784 ** less than needed, free and fall through to MSI 2785 */ 2786 pci_release_msi(dev); 2787 } 2788msi: 2789 if (adapter->msix_mem != NULL) { 2790 bus_release_resource(dev, SYS_RES_MEMORY, 2791 PCIR_BAR(EM_MSIX_BAR), adapter->msix_mem); 2792 adapter->msix_mem = NULL; 2793 } 2794 val = 1; 2795 if (pci_alloc_msi(dev, &val) == 0) { 2796 device_printf(adapter->dev,"Using an MSI interrupt\n"); 2797 return (val); 2798 } 2799 /* Should only happen due to manual configuration */ 2800 device_printf(adapter->dev,"No MSI/MSIX using a Legacy IRQ\n"); 2801 return (0); 2802} 2803 2804 2805/********************************************************************* 2806 * 2807 * Initialize the hardware to a configuration 2808 * as specified by the adapter structure. 2809 * 2810 **********************************************************************/ 2811static void 2812em_reset(struct adapter *adapter) 2813{ 2814 device_t dev = adapter->dev; 2815 struct ifnet *ifp = adapter->ifp; 2816 struct e1000_hw *hw = &adapter->hw; 2817 u16 rx_buffer_size; 2818 u32 pba; 2819 2820 INIT_DEBUGOUT("em_reset: begin"); 2821 2822 /* Set up smart power down as default off on newer adapters. */ 2823 if (!em_smart_pwr_down && (hw->mac.type == e1000_82571 || 2824 hw->mac.type == e1000_82572)) { 2825 u16 phy_tmp = 0; 2826 2827 /* Speed up time to link by disabling smart power down. */ 2828 e1000_read_phy_reg(hw, IGP02E1000_PHY_POWER_MGMT, &phy_tmp); 2829 phy_tmp &= ~IGP02E1000_PM_SPD; 2830 e1000_write_phy_reg(hw, IGP02E1000_PHY_POWER_MGMT, phy_tmp); 2831 } 2832 2833 /* 2834 * Packet Buffer Allocation (PBA) 2835 * Writing PBA sets the receive portion of the buffer 2836 * the remainder is used for the transmit buffer. 2837 */ 2838 switch (hw->mac.type) { 2839 /* Total Packet Buffer on these is 48K */ 2840 case e1000_82571: 2841 case e1000_82572: 2842 case e1000_80003es2lan: 2843 pba = E1000_PBA_32K; /* 32K for Rx, 16K for Tx */ 2844 break; 2845 case e1000_82573: /* 82573: Total Packet Buffer is 32K */ 2846 pba = E1000_PBA_12K; /* 12K for Rx, 20K for Tx */ 2847 break; 2848 case e1000_82574: 2849 case e1000_82583: 2850 pba = E1000_PBA_20K; /* 20K for Rx, 20K for Tx */ 2851 break; 2852 case e1000_ich8lan: 2853 pba = E1000_PBA_8K; 2854 break; 2855 case e1000_ich9lan: 2856 case e1000_ich10lan: 2857 /* Boost Receive side for jumbo frames */ 2858 if (adapter->hw.mac.max_frame_size > 4096) 2859 pba = E1000_PBA_14K; 2860 else 2861 pba = E1000_PBA_10K; 2862 break; 2863 case e1000_pchlan: 2864 case e1000_pch2lan: 2865 case e1000_pch_lpt: 2866 pba = E1000_PBA_26K; 2867 break; 2868 default: 2869 if (adapter->hw.mac.max_frame_size > 8192) 2870 pba = E1000_PBA_40K; /* 40K for Rx, 24K for Tx */ 2871 else 2872 pba = E1000_PBA_48K; /* 48K for Rx, 16K for Tx */ 2873 } 2874 E1000_WRITE_REG(&adapter->hw, E1000_PBA, pba); 2875 2876 /* 2877 * These parameters control the automatic generation (Tx) and 2878 * response (Rx) to Ethernet PAUSE frames. 2879 * - High water mark should allow for at least two frames to be 2880 * received after sending an XOFF. 2881 * - Low water mark works best when it is very near the high water mark. 2882 * This allows the receiver to restart by sending XON when it has 2883 * drained a bit. Here we use an arbitary value of 1500 which will 2884 * restart after one full frame is pulled from the buffer. There 2885 * could be several smaller frames in the buffer and if so they will 2886 * not trigger the XON until their total number reduces the buffer 2887 * by 1500. 2888 * - The pause time is fairly large at 1000 x 512ns = 512 usec. 2889 */ 2890 rx_buffer_size = ((E1000_READ_REG(hw, E1000_PBA) & 0xffff) << 10 ); 2891 hw->fc.high_water = rx_buffer_size - 2892 roundup2(adapter->hw.mac.max_frame_size, 1024); 2893 hw->fc.low_water = hw->fc.high_water - 1500; 2894 2895 if (adapter->fc) /* locally set flow control value? */ 2896 hw->fc.requested_mode = adapter->fc; 2897 else 2898 hw->fc.requested_mode = e1000_fc_full; 2899 2900 if (hw->mac.type == e1000_80003es2lan) 2901 hw->fc.pause_time = 0xFFFF; 2902 else 2903 hw->fc.pause_time = EM_FC_PAUSE_TIME; 2904 2905 hw->fc.send_xon = TRUE; 2906 2907 /* Device specific overrides/settings */ 2908 switch (hw->mac.type) { 2909 case e1000_pchlan: 2910 /* Workaround: no TX flow ctrl for PCH */ 2911 hw->fc.requested_mode = e1000_fc_rx_pause; 2912 hw->fc.pause_time = 0xFFFF; /* override */ 2913 if (ifp->if_mtu > ETHERMTU) { 2914 hw->fc.high_water = 0x3500; 2915 hw->fc.low_water = 0x1500; 2916 } else { 2917 hw->fc.high_water = 0x5000; 2918 hw->fc.low_water = 0x3000; 2919 } 2920 hw->fc.refresh_time = 0x1000; 2921 break; 2922 case e1000_pch2lan: 2923 case e1000_pch_lpt: 2924 hw->fc.high_water = 0x5C20; 2925 hw->fc.low_water = 0x5048; 2926 hw->fc.pause_time = 0x0650; 2927 hw->fc.refresh_time = 0x0400; 2928 /* Jumbos need adjusted PBA */ 2929 if (ifp->if_mtu > ETHERMTU) 2930 E1000_WRITE_REG(hw, E1000_PBA, 12); 2931 else 2932 E1000_WRITE_REG(hw, E1000_PBA, 26); 2933 break; 2934 case e1000_ich9lan: 2935 case e1000_ich10lan: 2936 if (ifp->if_mtu > ETHERMTU) { 2937 hw->fc.high_water = 0x2800; 2938 hw->fc.low_water = hw->fc.high_water - 8; 2939 break; 2940 } 2941 /* else fall thru */ 2942 default: 2943 if (hw->mac.type == e1000_80003es2lan) 2944 hw->fc.pause_time = 0xFFFF; 2945 break; 2946 } 2947 2948 /* Issue a global reset */ 2949 e1000_reset_hw(hw); 2950 E1000_WRITE_REG(hw, E1000_WUC, 0); 2951 em_disable_aspm(adapter); 2952 /* and a re-init */ 2953 if (e1000_init_hw(hw) < 0) { 2954 device_printf(dev, "Hardware Initialization Failed\n"); 2955 return; 2956 } 2957 2958 E1000_WRITE_REG(hw, E1000_VET, ETHERTYPE_VLAN); 2959 e1000_get_phy_info(hw); 2960 e1000_check_for_link(hw); 2961 return; 2962} 2963 2964/********************************************************************* 2965 * 2966 * Setup networking device structure and register an interface. 2967 * 2968 **********************************************************************/ 2969static int 2970em_setup_interface(device_t dev, struct adapter *adapter) 2971{ 2972 struct ifnet *ifp; 2973 2974 INIT_DEBUGOUT("em_setup_interface: begin"); 2975 2976 ifp = adapter->ifp = if_alloc(IFT_ETHER); 2977 if (ifp == NULL) { 2978 device_printf(dev, "can not allocate ifnet structure\n"); 2979 return (-1); 2980 } 2981 if_initname(ifp, device_get_name(dev), device_get_unit(dev)); 2982 ifp->if_init = em_init; 2983 ifp->if_softc = adapter; 2984 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 2985 ifp->if_ioctl = em_ioctl; 2986#ifdef EM_MULTIQUEUE 2987 /* Multiqueue stack interface */ 2988 ifp->if_transmit = em_mq_start; 2989 ifp->if_qflush = em_qflush; 2990#else 2991 ifp->if_start = em_start; 2992 IFQ_SET_MAXLEN(&ifp->if_snd, adapter->num_tx_desc - 1); 2993 ifp->if_snd.ifq_drv_maxlen = adapter->num_tx_desc - 1; 2994 IFQ_SET_READY(&ifp->if_snd); 2995#endif 2996 2997 ether_ifattach(ifp, adapter->hw.mac.addr); 2998 2999 ifp->if_capabilities = ifp->if_capenable = 0; 3000 3001 3002 ifp->if_capabilities |= IFCAP_HWCSUM | IFCAP_VLAN_HWCSUM; 3003 ifp->if_capabilities |= IFCAP_TSO4; 3004 /* 3005 * Tell the upper layer(s) we 3006 * support full VLAN capability 3007 */ 3008 ifp->if_data.ifi_hdrlen = sizeof(struct ether_vlan_header); 3009 ifp->if_capabilities |= IFCAP_VLAN_HWTAGGING 3010 | IFCAP_VLAN_HWTSO 3011 | IFCAP_VLAN_MTU; 3012 ifp->if_capenable = ifp->if_capabilities; 3013 3014 /* 3015 ** Don't turn this on by default, if vlans are 3016 ** created on another pseudo device (eg. lagg) 3017 ** then vlan events are not passed thru, breaking 3018 ** operation, but with HW FILTER off it works. If 3019 ** using vlans directly on the em driver you can 3020 ** enable this and get full hardware tag filtering. 3021 */ 3022 ifp->if_capabilities |= IFCAP_VLAN_HWFILTER; 3023 3024#ifdef DEVICE_POLLING 3025 ifp->if_capabilities |= IFCAP_POLLING; 3026#endif 3027 3028 /* Enable only WOL MAGIC by default */ 3029 if (adapter->wol) { 3030 ifp->if_capabilities |= IFCAP_WOL; 3031 ifp->if_capenable |= IFCAP_WOL_MAGIC; 3032 } 3033 3034 /* 3035 * Specify the media types supported by this adapter and register 3036 * callbacks to update media and link information 3037 */ 3038 ifmedia_init(&adapter->media, IFM_IMASK, 3039 em_media_change, em_media_status); 3040 if ((adapter->hw.phy.media_type == e1000_media_type_fiber) || 3041 (adapter->hw.phy.media_type == e1000_media_type_internal_serdes)) { 3042 u_char fiber_type = IFM_1000_SX; /* default type */ 3043 3044 ifmedia_add(&adapter->media, IFM_ETHER | fiber_type | IFM_FDX, 3045 0, NULL); 3046 ifmedia_add(&adapter->media, IFM_ETHER | fiber_type, 0, NULL); 3047 } else { 3048 ifmedia_add(&adapter->media, IFM_ETHER | IFM_10_T, 0, NULL); 3049 ifmedia_add(&adapter->media, IFM_ETHER | IFM_10_T | IFM_FDX, 3050 0, NULL); 3051 ifmedia_add(&adapter->media, IFM_ETHER | IFM_100_TX, 3052 0, NULL); 3053 ifmedia_add(&adapter->media, IFM_ETHER | IFM_100_TX | IFM_FDX, 3054 0, NULL); 3055 if (adapter->hw.phy.type != e1000_phy_ife) { 3056 ifmedia_add(&adapter->media, 3057 IFM_ETHER | IFM_1000_T | IFM_FDX, 0, NULL); 3058 ifmedia_add(&adapter->media, 3059 IFM_ETHER | IFM_1000_T, 0, NULL); 3060 } 3061 } 3062 ifmedia_add(&adapter->media, IFM_ETHER | IFM_AUTO, 0, NULL); 3063 ifmedia_set(&adapter->media, IFM_ETHER | IFM_AUTO); 3064 return (0); 3065} 3066 3067 3068/* 3069 * Manage DMA'able memory. 3070 */ 3071static void 3072em_dmamap_cb(void *arg, bus_dma_segment_t *segs, int nseg, int error) 3073{ 3074 if (error) 3075 return; 3076 *(bus_addr_t *) arg = segs[0].ds_addr; 3077} 3078 3079static int 3080em_dma_malloc(struct adapter *adapter, bus_size_t size, 3081 struct em_dma_alloc *dma, int mapflags) 3082{ 3083 int error; 3084 3085 error = bus_dma_tag_create(bus_get_dma_tag(adapter->dev), /* parent */ 3086 EM_DBA_ALIGN, 0, /* alignment, bounds */ 3087 BUS_SPACE_MAXADDR, /* lowaddr */ 3088 BUS_SPACE_MAXADDR, /* highaddr */ 3089 NULL, NULL, /* filter, filterarg */ 3090 size, /* maxsize */ 3091 1, /* nsegments */ 3092 size, /* maxsegsize */ 3093 0, /* flags */ 3094 NULL, /* lockfunc */ 3095 NULL, /* lockarg */ 3096 &dma->dma_tag); 3097 if (error) { 3098 device_printf(adapter->dev, 3099 "%s: bus_dma_tag_create failed: %d\n", 3100 __func__, error); 3101 goto fail_0; 3102 } 3103 3104 error = bus_dmamem_alloc(dma->dma_tag, (void**) &dma->dma_vaddr, 3105 BUS_DMA_NOWAIT | BUS_DMA_COHERENT, &dma->dma_map); 3106 if (error) { 3107 device_printf(adapter->dev, 3108 "%s: bus_dmamem_alloc(%ju) failed: %d\n", 3109 __func__, (uintmax_t)size, error); 3110 goto fail_2; 3111 } 3112 3113 dma->dma_paddr = 0; 3114 error = bus_dmamap_load(dma->dma_tag, dma->dma_map, dma->dma_vaddr, 3115 size, em_dmamap_cb, &dma->dma_paddr, mapflags | BUS_DMA_NOWAIT); 3116 if (error || dma->dma_paddr == 0) { 3117 device_printf(adapter->dev, 3118 "%s: bus_dmamap_load failed: %d\n", 3119 __func__, error); 3120 goto fail_3; 3121 } 3122 3123 return (0); 3124 3125fail_3: 3126 bus_dmamap_unload(dma->dma_tag, dma->dma_map); 3127fail_2: 3128 bus_dmamem_free(dma->dma_tag, dma->dma_vaddr, dma->dma_map); 3129 bus_dma_tag_destroy(dma->dma_tag); 3130fail_0: 3131 dma->dma_map = NULL; 3132 dma->dma_tag = NULL; 3133 3134 return (error); 3135} 3136 3137static void 3138em_dma_free(struct adapter *adapter, struct em_dma_alloc *dma) 3139{ 3140 if (dma->dma_tag == NULL) 3141 return; 3142 if (dma->dma_map != NULL) { 3143 bus_dmamap_sync(dma->dma_tag, dma->dma_map, 3144 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 3145 bus_dmamap_unload(dma->dma_tag, dma->dma_map); 3146 bus_dmamem_free(dma->dma_tag, dma->dma_vaddr, dma->dma_map); 3147 dma->dma_map = NULL; 3148 } 3149 bus_dma_tag_destroy(dma->dma_tag); 3150 dma->dma_tag = NULL; 3151} 3152 3153 3154/********************************************************************* 3155 * 3156 * Allocate memory for the transmit and receive rings, and then 3157 * the descriptors associated with each, called only once at attach. 3158 * 3159 **********************************************************************/ 3160static int 3161em_allocate_queues(struct adapter *adapter) 3162{ 3163 device_t dev = adapter->dev; 3164 struct tx_ring *txr = NULL; 3165 struct rx_ring *rxr = NULL; 3166 int rsize, tsize, error = E1000_SUCCESS; 3167 int txconf = 0, rxconf = 0; 3168 3169 3170 /* Allocate the TX ring struct memory */ 3171 if (!(adapter->tx_rings = 3172 (struct tx_ring *) malloc(sizeof(struct tx_ring) * 3173 adapter->num_queues, M_DEVBUF, M_NOWAIT | M_ZERO))) { 3174 device_printf(dev, "Unable to allocate TX ring memory\n"); 3175 error = ENOMEM; 3176 goto fail; 3177 } 3178 3179 /* Now allocate the RX */ 3180 if (!(adapter->rx_rings = 3181 (struct rx_ring *) malloc(sizeof(struct rx_ring) * 3182 adapter->num_queues, M_DEVBUF, M_NOWAIT | M_ZERO))) { 3183 device_printf(dev, "Unable to allocate RX ring memory\n"); 3184 error = ENOMEM; 3185 goto rx_fail; 3186 } 3187 3188 tsize = roundup2(adapter->num_tx_desc * 3189 sizeof(struct e1000_tx_desc), EM_DBA_ALIGN); 3190 /* 3191 * Now set up the TX queues, txconf is needed to handle the 3192 * possibility that things fail midcourse and we need to 3193 * undo memory gracefully 3194 */ 3195 for (int i = 0; i < adapter->num_queues; i++, txconf++) { 3196 /* Set up some basics */ 3197 txr = &adapter->tx_rings[i]; 3198 txr->adapter = adapter; 3199 txr->me = i; 3200 3201 /* Initialize the TX lock */ 3202 snprintf(txr->mtx_name, sizeof(txr->mtx_name), "%s:tx(%d)", 3203 device_get_nameunit(dev), txr->me); 3204 mtx_init(&txr->tx_mtx, txr->mtx_name, NULL, MTX_DEF); 3205 3206 if (em_dma_malloc(adapter, tsize, 3207 &txr->txdma, BUS_DMA_NOWAIT)) { 3208 device_printf(dev, 3209 "Unable to allocate TX Descriptor memory\n"); 3210 error = ENOMEM; 3211 goto err_tx_desc; 3212 } 3213 txr->tx_base = (struct e1000_tx_desc *)txr->txdma.dma_vaddr; 3214 bzero((void *)txr->tx_base, tsize); 3215 3216 if (em_allocate_transmit_buffers(txr)) { 3217 device_printf(dev, 3218 "Critical Failure setting up transmit buffers\n"); 3219 error = ENOMEM; 3220 goto err_tx_desc; 3221 } 3222#if __FreeBSD_version >= 800000 3223 /* Allocate a buf ring */ 3224 txr->br = buf_ring_alloc(4096, M_DEVBUF, 3225 M_WAITOK, &txr->tx_mtx); 3226#endif 3227 } 3228 3229 /* 3230 * Next the RX queues... 3231 */ 3232 rsize = roundup2(adapter->num_rx_desc * 3233 sizeof(struct e1000_rx_desc), EM_DBA_ALIGN); 3234 for (int i = 0; i < adapter->num_queues; i++, rxconf++) { 3235 rxr = &adapter->rx_rings[i]; 3236 rxr->adapter = adapter; 3237 rxr->me = i; 3238 3239 /* Initialize the RX lock */ 3240 snprintf(rxr->mtx_name, sizeof(rxr->mtx_name), "%s:rx(%d)", 3241 device_get_nameunit(dev), txr->me); 3242 mtx_init(&rxr->rx_mtx, rxr->mtx_name, NULL, MTX_DEF); 3243 3244 if (em_dma_malloc(adapter, rsize, 3245 &rxr->rxdma, BUS_DMA_NOWAIT)) { 3246 device_printf(dev, 3247 "Unable to allocate RxDescriptor memory\n"); 3248 error = ENOMEM; 3249 goto err_rx_desc; 3250 } 3251 rxr->rx_base = (struct e1000_rx_desc *)rxr->rxdma.dma_vaddr; 3252 bzero((void *)rxr->rx_base, rsize); 3253 3254 /* Allocate receive buffers for the ring*/ 3255 if (em_allocate_receive_buffers(rxr)) { 3256 device_printf(dev, 3257 "Critical Failure setting up receive buffers\n"); 3258 error = ENOMEM; 3259 goto err_rx_desc; 3260 } 3261 } 3262 3263 return (0); 3264 3265err_rx_desc: 3266 for (rxr = adapter->rx_rings; rxconf > 0; rxr++, rxconf--) 3267 em_dma_free(adapter, &rxr->rxdma); 3268err_tx_desc: 3269 for (txr = adapter->tx_rings; txconf > 0; txr++, txconf--) 3270 em_dma_free(adapter, &txr->txdma); 3271 free(adapter->rx_rings, M_DEVBUF); 3272rx_fail: 3273#if __FreeBSD_version >= 800000 3274 buf_ring_free(txr->br, M_DEVBUF); 3275#endif 3276 free(adapter->tx_rings, M_DEVBUF); 3277fail: 3278 return (error); 3279} 3280 3281 3282/********************************************************************* 3283 * 3284 * Allocate memory for tx_buffer structures. The tx_buffer stores all 3285 * the information needed to transmit a packet on the wire. This is 3286 * called only once at attach, setup is done every reset. 3287 * 3288 **********************************************************************/ 3289static int 3290em_allocate_transmit_buffers(struct tx_ring *txr) 3291{ 3292 struct adapter *adapter = txr->adapter; 3293 device_t dev = adapter->dev; 3294 struct em_buffer *txbuf; 3295 int error, i; 3296 3297 /* 3298 * Setup DMA descriptor areas. 3299 */ 3300 if ((error = bus_dma_tag_create(bus_get_dma_tag(dev), 3301 1, 0, /* alignment, bounds */ 3302 BUS_SPACE_MAXADDR, /* lowaddr */ 3303 BUS_SPACE_MAXADDR, /* highaddr */ 3304 NULL, NULL, /* filter, filterarg */ 3305 EM_TSO_SIZE, /* maxsize */ 3306 EM_MAX_SCATTER, /* nsegments */ 3307 PAGE_SIZE, /* maxsegsize */ 3308 0, /* flags */ 3309 NULL, /* lockfunc */ 3310 NULL, /* lockfuncarg */ 3311 &txr->txtag))) { 3312 device_printf(dev,"Unable to allocate TX DMA tag\n"); 3313 goto fail; 3314 } 3315 3316 if (!(txr->tx_buffers = 3317 (struct em_buffer *) malloc(sizeof(struct em_buffer) * 3318 adapter->num_tx_desc, M_DEVBUF, M_NOWAIT | M_ZERO))) { 3319 device_printf(dev, "Unable to allocate tx_buffer memory\n"); 3320 error = ENOMEM; 3321 goto fail; 3322 } 3323 3324 /* Create the descriptor buffer dma maps */ 3325 txbuf = txr->tx_buffers; 3326 for (i = 0; i < adapter->num_tx_desc; i++, txbuf++) { 3327 error = bus_dmamap_create(txr->txtag, 0, &txbuf->map); 3328 if (error != 0) { 3329 device_printf(dev, "Unable to create TX DMA map\n"); 3330 goto fail; 3331 } 3332 } 3333 3334 return 0; 3335fail: 3336 /* We free all, it handles case where we are in the middle */ 3337 em_free_transmit_structures(adapter); 3338 return (error); 3339} 3340 3341/********************************************************************* 3342 * 3343 * Initialize a transmit ring. 3344 * 3345 **********************************************************************/ 3346static void 3347em_setup_transmit_ring(struct tx_ring *txr) 3348{ 3349 struct adapter *adapter = txr->adapter; 3350 struct em_buffer *txbuf; 3351 int i; 3352#ifdef DEV_NETMAP 3353 struct netmap_adapter *na = NA(adapter->ifp); 3354 struct netmap_slot *slot; 3355#endif /* DEV_NETMAP */ 3356 3357 /* Clear the old descriptor contents */ 3358 EM_TX_LOCK(txr); 3359#ifdef DEV_NETMAP 3360 slot = netmap_reset(na, NR_TX, txr->me, 0); 3361#endif /* DEV_NETMAP */ 3362 3363 bzero((void *)txr->tx_base, 3364 (sizeof(struct e1000_tx_desc)) * adapter->num_tx_desc); 3365 /* Reset indices */ 3366 txr->next_avail_desc = 0; 3367 txr->next_to_clean = 0; 3368 3369 /* Free any existing tx buffers. */ 3370 txbuf = txr->tx_buffers; 3371 for (i = 0; i < adapter->num_tx_desc; i++, txbuf++) { 3372 if (txbuf->m_head != NULL) { 3373 bus_dmamap_sync(txr->txtag, txbuf->map, 3374 BUS_DMASYNC_POSTWRITE); 3375 bus_dmamap_unload(txr->txtag, txbuf->map); 3376 m_freem(txbuf->m_head); 3377 txbuf->m_head = NULL; 3378 } 3379#ifdef DEV_NETMAP 3380 if (slot) { 3381 int si = netmap_idx_n2k(&na->tx_rings[txr->me], i); 3382 uint64_t paddr; 3383 void *addr; 3384 3385 addr = PNMB(slot + si, &paddr); 3386 txr->tx_base[i].buffer_addr = htole64(paddr); 3387 /* reload the map for netmap mode */ 3388 netmap_load_map(txr->txtag, txbuf->map, addr); 3389 } 3390#endif /* DEV_NETMAP */ 3391 3392 /* clear the watch index */ 3393 txbuf->next_eop = -1; 3394 } 3395 3396 /* Set number of descriptors available */ 3397 txr->tx_avail = adapter->num_tx_desc; 3398 txr->queue_status = EM_QUEUE_IDLE; 3399 3400 /* Clear checksum offload context. */ 3401 txr->last_hw_offload = 0; 3402 txr->last_hw_ipcss = 0; 3403 txr->last_hw_ipcso = 0; 3404 txr->last_hw_tucss = 0; 3405 txr->last_hw_tucso = 0; 3406 3407 bus_dmamap_sync(txr->txdma.dma_tag, txr->txdma.dma_map, 3408 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 3409 EM_TX_UNLOCK(txr); 3410} 3411 3412/********************************************************************* 3413 * 3414 * Initialize all transmit rings. 3415 * 3416 **********************************************************************/ 3417static void 3418em_setup_transmit_structures(struct adapter *adapter) 3419{ 3420 struct tx_ring *txr = adapter->tx_rings; 3421 3422 for (int i = 0; i < adapter->num_queues; i++, txr++) 3423 em_setup_transmit_ring(txr); 3424 3425 return; 3426} 3427 3428/********************************************************************* 3429 * 3430 * Enable transmit unit. 3431 * 3432 **********************************************************************/ 3433static void 3434em_initialize_transmit_unit(struct adapter *adapter) 3435{ 3436 struct tx_ring *txr = adapter->tx_rings; 3437 struct e1000_hw *hw = &adapter->hw; 3438 u32 tctl, tarc, tipg = 0; 3439 3440 INIT_DEBUGOUT("em_initialize_transmit_unit: begin"); 3441 3442 for (int i = 0; i < adapter->num_queues; i++, txr++) { 3443 u64 bus_addr = txr->txdma.dma_paddr; 3444 /* Base and Len of TX Ring */ 3445 E1000_WRITE_REG(hw, E1000_TDLEN(i), 3446 adapter->num_tx_desc * sizeof(struct e1000_tx_desc)); 3447 E1000_WRITE_REG(hw, E1000_TDBAH(i), 3448 (u32)(bus_addr >> 32)); 3449 E1000_WRITE_REG(hw, E1000_TDBAL(i), 3450 (u32)bus_addr); 3451 /* Init the HEAD/TAIL indices */ 3452 E1000_WRITE_REG(hw, E1000_TDT(i), 0); 3453 E1000_WRITE_REG(hw, E1000_TDH(i), 0); 3454 3455 HW_DEBUGOUT2("Base = %x, Length = %x\n", 3456 E1000_READ_REG(&adapter->hw, E1000_TDBAL(i)), 3457 E1000_READ_REG(&adapter->hw, E1000_TDLEN(i))); 3458 3459 txr->queue_status = EM_QUEUE_IDLE; 3460 } 3461 3462 /* Set the default values for the Tx Inter Packet Gap timer */ 3463 switch (adapter->hw.mac.type) { 3464 case e1000_80003es2lan: 3465 tipg = DEFAULT_82543_TIPG_IPGR1; 3466 tipg |= DEFAULT_80003ES2LAN_TIPG_IPGR2 << 3467 E1000_TIPG_IPGR2_SHIFT; 3468 break; 3469 default: 3470 if ((adapter->hw.phy.media_type == e1000_media_type_fiber) || 3471 (adapter->hw.phy.media_type == 3472 e1000_media_type_internal_serdes)) 3473 tipg = DEFAULT_82543_TIPG_IPGT_FIBER; 3474 else 3475 tipg = DEFAULT_82543_TIPG_IPGT_COPPER; 3476 tipg |= DEFAULT_82543_TIPG_IPGR1 << E1000_TIPG_IPGR1_SHIFT; 3477 tipg |= DEFAULT_82543_TIPG_IPGR2 << E1000_TIPG_IPGR2_SHIFT; 3478 } 3479 3480 E1000_WRITE_REG(&adapter->hw, E1000_TIPG, tipg); 3481 E1000_WRITE_REG(&adapter->hw, E1000_TIDV, adapter->tx_int_delay.value); 3482 3483 if(adapter->hw.mac.type >= e1000_82540) 3484 E1000_WRITE_REG(&adapter->hw, E1000_TADV, 3485 adapter->tx_abs_int_delay.value); 3486 3487 if ((adapter->hw.mac.type == e1000_82571) || 3488 (adapter->hw.mac.type == e1000_82572)) { 3489 tarc = E1000_READ_REG(&adapter->hw, E1000_TARC(0)); 3490 tarc |= SPEED_MODE_BIT; 3491 E1000_WRITE_REG(&adapter->hw, E1000_TARC(0), tarc); 3492 } else if (adapter->hw.mac.type == e1000_80003es2lan) { 3493 tarc = E1000_READ_REG(&adapter->hw, E1000_TARC(0)); 3494 tarc |= 1; 3495 E1000_WRITE_REG(&adapter->hw, E1000_TARC(0), tarc); 3496 tarc = E1000_READ_REG(&adapter->hw, E1000_TARC(1)); 3497 tarc |= 1; 3498 E1000_WRITE_REG(&adapter->hw, E1000_TARC(1), tarc); 3499 } 3500 3501 adapter->txd_cmd = E1000_TXD_CMD_IFCS; 3502 if (adapter->tx_int_delay.value > 0) 3503 adapter->txd_cmd |= E1000_TXD_CMD_IDE; 3504 3505 /* Program the Transmit Control Register */ 3506 tctl = E1000_READ_REG(&adapter->hw, E1000_TCTL); 3507 tctl &= ~E1000_TCTL_CT; 3508 tctl |= (E1000_TCTL_PSP | E1000_TCTL_RTLC | E1000_TCTL_EN | 3509 (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT)); 3510 3511 if (adapter->hw.mac.type >= e1000_82571) 3512 tctl |= E1000_TCTL_MULR; 3513 3514 /* This write will effectively turn on the transmit unit. */ 3515 E1000_WRITE_REG(&adapter->hw, E1000_TCTL, tctl); 3516 3517} 3518 3519 3520/********************************************************************* 3521 * 3522 * Free all transmit rings. 3523 * 3524 **********************************************************************/ 3525static void 3526em_free_transmit_structures(struct adapter *adapter) 3527{ 3528 struct tx_ring *txr = adapter->tx_rings; 3529 3530 for (int i = 0; i < adapter->num_queues; i++, txr++) { 3531 EM_TX_LOCK(txr); 3532 em_free_transmit_buffers(txr); 3533 em_dma_free(adapter, &txr->txdma); 3534 EM_TX_UNLOCK(txr); 3535 EM_TX_LOCK_DESTROY(txr); 3536 } 3537 3538 free(adapter->tx_rings, M_DEVBUF); 3539} 3540 3541/********************************************************************* 3542 * 3543 * Free transmit ring related data structures. 3544 * 3545 **********************************************************************/ 3546static void 3547em_free_transmit_buffers(struct tx_ring *txr) 3548{ 3549 struct adapter *adapter = txr->adapter; 3550 struct em_buffer *txbuf; 3551 3552 INIT_DEBUGOUT("free_transmit_ring: begin"); 3553 3554 if (txr->tx_buffers == NULL) 3555 return; 3556 3557 for (int i = 0; i < adapter->num_tx_desc; i++) { 3558 txbuf = &txr->tx_buffers[i]; 3559 if (txbuf->m_head != NULL) { 3560 bus_dmamap_sync(txr->txtag, txbuf->map, 3561 BUS_DMASYNC_POSTWRITE); 3562 bus_dmamap_unload(txr->txtag, 3563 txbuf->map); 3564 m_freem(txbuf->m_head); 3565 txbuf->m_head = NULL; 3566 if (txbuf->map != NULL) { 3567 bus_dmamap_destroy(txr->txtag, 3568 txbuf->map); 3569 txbuf->map = NULL; 3570 } 3571 } else if (txbuf->map != NULL) { 3572 bus_dmamap_unload(txr->txtag, 3573 txbuf->map); 3574 bus_dmamap_destroy(txr->txtag, 3575 txbuf->map); 3576 txbuf->map = NULL; 3577 } 3578 } 3579#if __FreeBSD_version >= 800000 3580 if (txr->br != NULL) 3581 buf_ring_free(txr->br, M_DEVBUF); 3582#endif 3583 if (txr->tx_buffers != NULL) { 3584 free(txr->tx_buffers, M_DEVBUF); 3585 txr->tx_buffers = NULL; 3586 } 3587 if (txr->txtag != NULL) { 3588 bus_dma_tag_destroy(txr->txtag); 3589 txr->txtag = NULL; 3590 } 3591 return; 3592} 3593 3594 3595/********************************************************************* 3596 * The offload context is protocol specific (TCP/UDP) and thus 3597 * only needs to be set when the protocol changes. The occasion 3598 * of a context change can be a performance detriment, and 3599 * might be better just disabled. The reason arises in the way 3600 * in which the controller supports pipelined requests from the 3601 * Tx data DMA. Up to four requests can be pipelined, and they may 3602 * belong to the same packet or to multiple packets. However all 3603 * requests for one packet are issued before a request is issued 3604 * for a subsequent packet and if a request for the next packet 3605 * requires a context change, that request will be stalled 3606 * until the previous request completes. This means setting up 3607 * a new context effectively disables pipelined Tx data DMA which 3608 * in turn greatly slow down performance to send small sized 3609 * frames. 3610 **********************************************************************/ 3611static void 3612em_transmit_checksum_setup(struct tx_ring *txr, struct mbuf *mp, int ip_off, 3613 struct ip *ip, u32 *txd_upper, u32 *txd_lower) 3614{ 3615 struct adapter *adapter = txr->adapter; 3616 struct e1000_context_desc *TXD = NULL; 3617 struct em_buffer *tx_buffer; 3618 int cur, hdr_len; 3619 u32 cmd = 0; 3620 u16 offload = 0; 3621 u8 ipcso, ipcss, tucso, tucss; 3622 3623 ipcss = ipcso = tucss = tucso = 0; 3624 hdr_len = ip_off + (ip->ip_hl << 2); 3625 cur = txr->next_avail_desc; 3626 3627 /* Setup of IP header checksum. */ 3628 if (mp->m_pkthdr.csum_flags & CSUM_IP) { 3629 *txd_upper |= E1000_TXD_POPTS_IXSM << 8; 3630 offload |= CSUM_IP; 3631 ipcss = ip_off; 3632 ipcso = ip_off + offsetof(struct ip, ip_sum); 3633 /* 3634 * Start offset for header checksum calculation. 3635 * End offset for header checksum calculation. 3636 * Offset of place to put the checksum. 3637 */ 3638 TXD = (struct e1000_context_desc *)&txr->tx_base[cur]; 3639 TXD->lower_setup.ip_fields.ipcss = ipcss; 3640 TXD->lower_setup.ip_fields.ipcse = htole16(hdr_len); 3641 TXD->lower_setup.ip_fields.ipcso = ipcso; 3642 cmd |= E1000_TXD_CMD_IP; 3643 } 3644 3645 if (mp->m_pkthdr.csum_flags & CSUM_TCP) { 3646 *txd_lower = E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D; 3647 *txd_upper |= E1000_TXD_POPTS_TXSM << 8; 3648 offload |= CSUM_TCP; 3649 tucss = hdr_len; 3650 tucso = hdr_len + offsetof(struct tcphdr, th_sum); 3651 /* 3652 * Setting up new checksum offload context for every frames 3653 * takes a lot of processing time for hardware. This also 3654 * reduces performance a lot for small sized frames so avoid 3655 * it if driver can use previously configured checksum 3656 * offload context. 3657 */ 3658 if (txr->last_hw_offload == offload) { 3659 if (offload & CSUM_IP) { 3660 if (txr->last_hw_ipcss == ipcss && 3661 txr->last_hw_ipcso == ipcso && 3662 txr->last_hw_tucss == tucss && 3663 txr->last_hw_tucso == tucso) 3664 return; 3665 } else { 3666 if (txr->last_hw_tucss == tucss && 3667 txr->last_hw_tucso == tucso) 3668 return; 3669 } 3670 } 3671 txr->last_hw_offload = offload; 3672 txr->last_hw_tucss = tucss; 3673 txr->last_hw_tucso = tucso; 3674 /* 3675 * Start offset for payload checksum calculation. 3676 * End offset for payload checksum calculation. 3677 * Offset of place to put the checksum. 3678 */ 3679 TXD = (struct e1000_context_desc *)&txr->tx_base[cur]; 3680 TXD->upper_setup.tcp_fields.tucss = hdr_len; 3681 TXD->upper_setup.tcp_fields.tucse = htole16(0); 3682 TXD->upper_setup.tcp_fields.tucso = tucso; 3683 cmd |= E1000_TXD_CMD_TCP; 3684 } else if (mp->m_pkthdr.csum_flags & CSUM_UDP) { 3685 *txd_lower = E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D; 3686 *txd_upper |= E1000_TXD_POPTS_TXSM << 8; 3687 tucss = hdr_len; 3688 tucso = hdr_len + offsetof(struct udphdr, uh_sum); 3689 /* 3690 * Setting up new checksum offload context for every frames 3691 * takes a lot of processing time for hardware. This also 3692 * reduces performance a lot for small sized frames so avoid 3693 * it if driver can use previously configured checksum 3694 * offload context. 3695 */ 3696 if (txr->last_hw_offload == offload) { 3697 if (offload & CSUM_IP) { 3698 if (txr->last_hw_ipcss == ipcss && 3699 txr->last_hw_ipcso == ipcso && 3700 txr->last_hw_tucss == tucss && 3701 txr->last_hw_tucso == tucso) 3702 return; 3703 } else { 3704 if (txr->last_hw_tucss == tucss && 3705 txr->last_hw_tucso == tucso) 3706 return; 3707 } 3708 } 3709 txr->last_hw_offload = offload; 3710 txr->last_hw_tucss = tucss; 3711 txr->last_hw_tucso = tucso; 3712 /* 3713 * Start offset for header checksum calculation. 3714 * End offset for header checksum calculation. 3715 * Offset of place to put the checksum. 3716 */ 3717 TXD = (struct e1000_context_desc *)&txr->tx_base[cur]; 3718 TXD->upper_setup.tcp_fields.tucss = tucss; 3719 TXD->upper_setup.tcp_fields.tucse = htole16(0); 3720 TXD->upper_setup.tcp_fields.tucso = tucso; 3721 } 3722 3723 if (offload & CSUM_IP) { 3724 txr->last_hw_ipcss = ipcss; 3725 txr->last_hw_ipcso = ipcso; 3726 } 3727 3728 TXD->tcp_seg_setup.data = htole32(0); 3729 TXD->cmd_and_length = 3730 htole32(adapter->txd_cmd | E1000_TXD_CMD_DEXT | cmd); 3731 tx_buffer = &txr->tx_buffers[cur]; 3732 tx_buffer->m_head = NULL; 3733 tx_buffer->next_eop = -1; 3734 3735 if (++cur == adapter->num_tx_desc) 3736 cur = 0; 3737 3738 txr->tx_avail--; 3739 txr->next_avail_desc = cur; 3740} 3741 3742 3743/********************************************************************** 3744 * 3745 * Setup work for hardware segmentation offload (TSO) 3746 * 3747 **********************************************************************/ 3748static void 3749em_tso_setup(struct tx_ring *txr, struct mbuf *mp, int ip_off, 3750 struct ip *ip, struct tcphdr *tp, u32 *txd_upper, u32 *txd_lower) 3751{ 3752 struct adapter *adapter = txr->adapter; 3753 struct e1000_context_desc *TXD; 3754 struct em_buffer *tx_buffer; 3755 int cur, hdr_len; 3756 3757 /* 3758 * In theory we can use the same TSO context if and only if 3759 * frame is the same type(IP/TCP) and the same MSS. However 3760 * checking whether a frame has the same IP/TCP structure is 3761 * hard thing so just ignore that and always restablish a 3762 * new TSO context. 3763 */ 3764 hdr_len = ip_off + (ip->ip_hl << 2) + (tp->th_off << 2); 3765 *txd_lower = (E1000_TXD_CMD_DEXT | /* Extended descr type */ 3766 E1000_TXD_DTYP_D | /* Data descr type */ 3767 E1000_TXD_CMD_TSE); /* Do TSE on this packet */ 3768 3769 /* IP and/or TCP header checksum calculation and insertion. */ 3770 *txd_upper = (E1000_TXD_POPTS_IXSM | E1000_TXD_POPTS_TXSM) << 8; 3771 3772 cur = txr->next_avail_desc; 3773 tx_buffer = &txr->tx_buffers[cur]; 3774 TXD = (struct e1000_context_desc *) &txr->tx_base[cur]; 3775 3776 /* 3777 * Start offset for header checksum calculation. 3778 * End offset for header checksum calculation. 3779 * Offset of place put the checksum. 3780 */ 3781 TXD->lower_setup.ip_fields.ipcss = ip_off; 3782 TXD->lower_setup.ip_fields.ipcse = 3783 htole16(ip_off + (ip->ip_hl << 2) - 1); 3784 TXD->lower_setup.ip_fields.ipcso = ip_off + offsetof(struct ip, ip_sum); 3785 /* 3786 * Start offset for payload checksum calculation. 3787 * End offset for payload checksum calculation. 3788 * Offset of place to put the checksum. 3789 */ 3790 TXD->upper_setup.tcp_fields.tucss = ip_off + (ip->ip_hl << 2); 3791 TXD->upper_setup.tcp_fields.tucse = 0; 3792 TXD->upper_setup.tcp_fields.tucso = 3793 ip_off + (ip->ip_hl << 2) + offsetof(struct tcphdr, th_sum); 3794 /* 3795 * Payload size per packet w/o any headers. 3796 * Length of all headers up to payload. 3797 */ 3798 TXD->tcp_seg_setup.fields.mss = htole16(mp->m_pkthdr.tso_segsz); 3799 TXD->tcp_seg_setup.fields.hdr_len = hdr_len; 3800 3801 TXD->cmd_and_length = htole32(adapter->txd_cmd | 3802 E1000_TXD_CMD_DEXT | /* Extended descr */ 3803 E1000_TXD_CMD_TSE | /* TSE context */ 3804 E1000_TXD_CMD_IP | /* Do IP csum */ 3805 E1000_TXD_CMD_TCP | /* Do TCP checksum */ 3806 (mp->m_pkthdr.len - (hdr_len))); /* Total len */ 3807 3808 tx_buffer->m_head = NULL; 3809 tx_buffer->next_eop = -1; 3810 3811 if (++cur == adapter->num_tx_desc) 3812 cur = 0; 3813 3814 txr->tx_avail--; 3815 txr->next_avail_desc = cur; 3816 txr->tx_tso = TRUE; 3817} 3818 3819 3820/********************************************************************** 3821 * 3822 * Examine each tx_buffer in the used queue. If the hardware is done 3823 * processing the packet then free associated resources. The 3824 * tx_buffer is put back on the free queue. 3825 * 3826 **********************************************************************/ 3827static void 3828em_txeof(struct tx_ring *txr) 3829{ 3830 struct adapter *adapter = txr->adapter; 3831 int first, last, done, processed; 3832 struct em_buffer *tx_buffer; 3833 struct e1000_tx_desc *tx_desc, *eop_desc; 3834 struct ifnet *ifp = adapter->ifp; 3835 3836 EM_TX_LOCK_ASSERT(txr); 3837#ifdef DEV_NETMAP 3838 if (netmap_tx_irq(ifp, txr->me)) 3839 return; 3840#endif /* DEV_NETMAP */ 3841 3842 /* No work, make sure watchdog is off */ 3843 if (txr->tx_avail == adapter->num_tx_desc) { 3844 txr->queue_status = EM_QUEUE_IDLE; 3845 return; 3846 } 3847 3848 processed = 0; 3849 first = txr->next_to_clean; 3850 tx_desc = &txr->tx_base[first]; 3851 tx_buffer = &txr->tx_buffers[first]; 3852 last = tx_buffer->next_eop; 3853 eop_desc = &txr->tx_base[last]; 3854 3855 /* 3856 * What this does is get the index of the 3857 * first descriptor AFTER the EOP of the 3858 * first packet, that way we can do the 3859 * simple comparison on the inner while loop. 3860 */ 3861 if (++last == adapter->num_tx_desc) 3862 last = 0; 3863 done = last; 3864 3865 bus_dmamap_sync(txr->txdma.dma_tag, txr->txdma.dma_map, 3866 BUS_DMASYNC_POSTREAD); 3867 3868 while (eop_desc->upper.fields.status & E1000_TXD_STAT_DD) { 3869 /* We clean the range of the packet */ 3870 while (first != done) { 3871 tx_desc->upper.data = 0; 3872 tx_desc->lower.data = 0; 3873 tx_desc->buffer_addr = 0; 3874 ++txr->tx_avail; 3875 ++processed; 3876 3877 if (tx_buffer->m_head) { 3878 bus_dmamap_sync(txr->txtag, 3879 tx_buffer->map, 3880 BUS_DMASYNC_POSTWRITE); 3881 bus_dmamap_unload(txr->txtag, 3882 tx_buffer->map); 3883 m_freem(tx_buffer->m_head); 3884 tx_buffer->m_head = NULL; 3885 } 3886 tx_buffer->next_eop = -1; 3887 txr->watchdog_time = ticks; 3888 3889 if (++first == adapter->num_tx_desc) 3890 first = 0; 3891 3892 tx_buffer = &txr->tx_buffers[first]; 3893 tx_desc = &txr->tx_base[first]; 3894 } 3895 ++ifp->if_opackets; 3896 /* See if we can continue to the next packet */ 3897 last = tx_buffer->next_eop; 3898 if (last != -1) { 3899 eop_desc = &txr->tx_base[last]; 3900 /* Get new done point */ 3901 if (++last == adapter->num_tx_desc) last = 0; 3902 done = last; 3903 } else 3904 break; 3905 } 3906 bus_dmamap_sync(txr->txdma.dma_tag, txr->txdma.dma_map, 3907 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 3908 3909 txr->next_to_clean = first; 3910 3911 /* 3912 ** Watchdog calculation, we know there's 3913 ** work outstanding or the first return 3914 ** would have been taken, so none processed 3915 ** for too long indicates a hang. local timer 3916 ** will examine this and do a reset if needed. 3917 */ 3918 if ((!processed) && ((ticks - txr->watchdog_time) > EM_WATCHDOG)) 3919 txr->queue_status = EM_QUEUE_HUNG; 3920 3921 /* 3922 * If we have a minimum free, clear IFF_DRV_OACTIVE 3923 * to tell the stack that it is OK to send packets. 3924 * Notice that all writes of OACTIVE happen under the 3925 * TX lock which, with a single queue, guarantees 3926 * sanity. 3927 */ 3928 if (txr->tx_avail >= EM_MAX_SCATTER) 3929 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 3930 3931 /* Disable watchdog if all clean */ 3932 if (txr->tx_avail == adapter->num_tx_desc) { 3933 txr->queue_status = EM_QUEUE_IDLE; 3934 } 3935} 3936 3937 3938/********************************************************************* 3939 * 3940 * Refresh RX descriptor mbufs from system mbuf buffer pool. 3941 * 3942 **********************************************************************/ 3943static void 3944em_refresh_mbufs(struct rx_ring *rxr, int limit) 3945{ 3946 struct adapter *adapter = rxr->adapter; 3947 struct mbuf *m; 3948 bus_dma_segment_t segs[1]; 3949 struct em_buffer *rxbuf; 3950 int i, j, error, nsegs; 3951 bool cleaned = FALSE; 3952 3953 i = j = rxr->next_to_refresh; 3954 /* 3955 ** Get one descriptor beyond 3956 ** our work mark to control 3957 ** the loop. 3958 */ 3959 if (++j == adapter->num_rx_desc) 3960 j = 0; 3961 3962 while (j != limit) { 3963 rxbuf = &rxr->rx_buffers[i]; 3964 if (rxbuf->m_head == NULL) { 3965 m = m_getjcl(M_NOWAIT, MT_DATA, 3966 M_PKTHDR, adapter->rx_mbuf_sz); 3967 /* 3968 ** If we have a temporary resource shortage 3969 ** that causes a failure, just abort refresh 3970 ** for now, we will return to this point when 3971 ** reinvoked from em_rxeof. 3972 */ 3973 if (m == NULL) 3974 goto update; 3975 } else 3976 m = rxbuf->m_head; 3977 3978 m->m_len = m->m_pkthdr.len = adapter->rx_mbuf_sz; 3979 m->m_flags |= M_PKTHDR; 3980 m->m_data = m->m_ext.ext_buf; 3981 3982 /* Use bus_dma machinery to setup the memory mapping */ 3983 error = bus_dmamap_load_mbuf_sg(rxr->rxtag, rxbuf->map, 3984 m, segs, &nsegs, BUS_DMA_NOWAIT); 3985 if (error != 0) { 3986 printf("Refresh mbufs: hdr dmamap load" 3987 " failure - %d\n", error); 3988 m_free(m); 3989 rxbuf->m_head = NULL; 3990 goto update; 3991 } 3992 rxbuf->m_head = m; 3993 bus_dmamap_sync(rxr->rxtag, 3994 rxbuf->map, BUS_DMASYNC_PREREAD); 3995 rxr->rx_base[i].buffer_addr = htole64(segs[0].ds_addr); 3996 cleaned = TRUE; 3997 3998 i = j; /* Next is precalulated for us */ 3999 rxr->next_to_refresh = i; 4000 /* Calculate next controlling index */ 4001 if (++j == adapter->num_rx_desc) 4002 j = 0; 4003 } 4004update: 4005 /* 4006 ** Update the tail pointer only if, 4007 ** and as far as we have refreshed. 4008 */ 4009 if (cleaned) 4010 E1000_WRITE_REG(&adapter->hw, 4011 E1000_RDT(rxr->me), rxr->next_to_refresh); 4012 4013 return; 4014} 4015 4016 4017/********************************************************************* 4018 * 4019 * Allocate memory for rx_buffer structures. Since we use one 4020 * rx_buffer per received packet, the maximum number of rx_buffer's 4021 * that we'll need is equal to the number of receive descriptors 4022 * that we've allocated. 4023 * 4024 **********************************************************************/ 4025static int 4026em_allocate_receive_buffers(struct rx_ring *rxr) 4027{ 4028 struct adapter *adapter = rxr->adapter; 4029 device_t dev = adapter->dev; 4030 struct em_buffer *rxbuf; 4031 int error; 4032 4033 rxr->rx_buffers = malloc(sizeof(struct em_buffer) * 4034 adapter->num_rx_desc, M_DEVBUF, M_NOWAIT | M_ZERO); 4035 if (rxr->rx_buffers == NULL) { 4036 device_printf(dev, "Unable to allocate rx_buffer memory\n"); 4037 return (ENOMEM); 4038 } 4039 4040 error = bus_dma_tag_create(bus_get_dma_tag(dev), /* parent */ 4041 1, 0, /* alignment, bounds */ 4042 BUS_SPACE_MAXADDR, /* lowaddr */ 4043 BUS_SPACE_MAXADDR, /* highaddr */ 4044 NULL, NULL, /* filter, filterarg */ 4045 MJUM9BYTES, /* maxsize */ 4046 1, /* nsegments */ 4047 MJUM9BYTES, /* maxsegsize */ 4048 0, /* flags */ 4049 NULL, /* lockfunc */ 4050 NULL, /* lockarg */ 4051 &rxr->rxtag); 4052 if (error) { 4053 device_printf(dev, "%s: bus_dma_tag_create failed %d\n", 4054 __func__, error); 4055 goto fail; 4056 } 4057 4058 rxbuf = rxr->rx_buffers; 4059 for (int i = 0; i < adapter->num_rx_desc; i++, rxbuf++) { 4060 rxbuf = &rxr->rx_buffers[i]; 4061 error = bus_dmamap_create(rxr->rxtag, 0, &rxbuf->map); 4062 if (error) { 4063 device_printf(dev, "%s: bus_dmamap_create failed: %d\n", 4064 __func__, error); 4065 goto fail; 4066 } 4067 } 4068 4069 return (0); 4070 4071fail: 4072 em_free_receive_structures(adapter); 4073 return (error); 4074} 4075 4076 4077/********************************************************************* 4078 * 4079 * Initialize a receive ring and its buffers. 4080 * 4081 **********************************************************************/ 4082static int 4083em_setup_receive_ring(struct rx_ring *rxr) 4084{ 4085 struct adapter *adapter = rxr->adapter; 4086 struct em_buffer *rxbuf; 4087 bus_dma_segment_t seg[1]; 4088 int rsize, nsegs, error = 0; 4089#ifdef DEV_NETMAP 4090 struct netmap_adapter *na = NA(adapter->ifp); 4091 struct netmap_slot *slot; 4092#endif 4093 4094 4095 /* Clear the ring contents */ 4096 EM_RX_LOCK(rxr); 4097 rsize = roundup2(adapter->num_rx_desc * 4098 sizeof(struct e1000_rx_desc), EM_DBA_ALIGN); 4099 bzero((void *)rxr->rx_base, rsize); 4100#ifdef DEV_NETMAP 4101 slot = netmap_reset(na, NR_RX, 0, 0); 4102#endif 4103 4104 /* 4105 ** Free current RX buffer structs and their mbufs 4106 */ 4107 for (int i = 0; i < adapter->num_rx_desc; i++) { 4108 rxbuf = &rxr->rx_buffers[i]; 4109 if (rxbuf->m_head != NULL) { 4110 bus_dmamap_sync(rxr->rxtag, rxbuf->map, 4111 BUS_DMASYNC_POSTREAD); 4112 bus_dmamap_unload(rxr->rxtag, rxbuf->map); 4113 m_freem(rxbuf->m_head); 4114 rxbuf->m_head = NULL; /* mark as freed */ 4115 } 4116 } 4117 4118 /* Now replenish the mbufs */ 4119 for (int j = 0; j != adapter->num_rx_desc; ++j) { 4120 rxbuf = &rxr->rx_buffers[j]; 4121#ifdef DEV_NETMAP 4122 if (slot) { 4123 int si = netmap_idx_n2k(&na->rx_rings[rxr->me], j); 4124 uint64_t paddr; 4125 void *addr; 4126 4127 addr = PNMB(slot + si, &paddr); 4128 netmap_load_map(rxr->rxtag, rxbuf->map, addr); 4129 /* Update descriptor */ 4130 rxr->rx_base[j].buffer_addr = htole64(paddr); 4131 continue; 4132 } 4133#endif /* DEV_NETMAP */ 4134 rxbuf->m_head = m_getjcl(M_NOWAIT, MT_DATA, 4135 M_PKTHDR, adapter->rx_mbuf_sz); 4136 if (rxbuf->m_head == NULL) { 4137 error = ENOBUFS; 4138 goto fail; 4139 } 4140 rxbuf->m_head->m_len = adapter->rx_mbuf_sz; 4141 rxbuf->m_head->m_flags &= ~M_HASFCS; /* we strip it */ 4142 rxbuf->m_head->m_pkthdr.len = adapter->rx_mbuf_sz; 4143 4144 /* Get the memory mapping */ 4145 error = bus_dmamap_load_mbuf_sg(rxr->rxtag, 4146 rxbuf->map, rxbuf->m_head, seg, 4147 &nsegs, BUS_DMA_NOWAIT); 4148 if (error != 0) { 4149 m_freem(rxbuf->m_head); 4150 rxbuf->m_head = NULL; 4151 goto fail; 4152 } 4153 bus_dmamap_sync(rxr->rxtag, 4154 rxbuf->map, BUS_DMASYNC_PREREAD); 4155 4156 /* Update descriptor */ 4157 rxr->rx_base[j].buffer_addr = htole64(seg[0].ds_addr); 4158 } 4159 rxr->next_to_check = 0; 4160 rxr->next_to_refresh = 0; 4161 bus_dmamap_sync(rxr->rxdma.dma_tag, rxr->rxdma.dma_map, 4162 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 4163 4164fail: 4165 EM_RX_UNLOCK(rxr); 4166 return (error); 4167} 4168 4169/********************************************************************* 4170 * 4171 * Initialize all receive rings. 4172 * 4173 **********************************************************************/ 4174static int 4175em_setup_receive_structures(struct adapter *adapter) 4176{ 4177 struct rx_ring *rxr = adapter->rx_rings; 4178 int q; 4179 4180 for (q = 0; q < adapter->num_queues; q++, rxr++) 4181 if (em_setup_receive_ring(rxr)) 4182 goto fail; 4183 4184 return (0); 4185fail: 4186 /* 4187 * Free RX buffers allocated so far, we will only handle 4188 * the rings that completed, the failing case will have 4189 * cleaned up for itself. 'q' failed, so its the terminus. 4190 */ 4191 for (int i = 0; i < q; ++i) { 4192 rxr = &adapter->rx_rings[i]; 4193 for (int n = 0; n < adapter->num_rx_desc; n++) { 4194 struct em_buffer *rxbuf; 4195 rxbuf = &rxr->rx_buffers[n]; 4196 if (rxbuf->m_head != NULL) { 4197 bus_dmamap_sync(rxr->rxtag, rxbuf->map, 4198 BUS_DMASYNC_POSTREAD); 4199 bus_dmamap_unload(rxr->rxtag, rxbuf->map); 4200 m_freem(rxbuf->m_head); 4201 rxbuf->m_head = NULL; 4202 } 4203 } 4204 rxr->next_to_check = 0; 4205 rxr->next_to_refresh = 0; 4206 } 4207 4208 return (ENOBUFS); 4209} 4210 4211/********************************************************************* 4212 * 4213 * Free all receive rings. 4214 * 4215 **********************************************************************/ 4216static void 4217em_free_receive_structures(struct adapter *adapter) 4218{ 4219 struct rx_ring *rxr = adapter->rx_rings; 4220 4221 for (int i = 0; i < adapter->num_queues; i++, rxr++) { 4222 em_free_receive_buffers(rxr); 4223 /* Free the ring memory as well */ 4224 em_dma_free(adapter, &rxr->rxdma); 4225 EM_RX_LOCK_DESTROY(rxr); 4226 } 4227 4228 free(adapter->rx_rings, M_DEVBUF); 4229} 4230 4231 4232/********************************************************************* 4233 * 4234 * Free receive ring data structures 4235 * 4236 **********************************************************************/ 4237static void 4238em_free_receive_buffers(struct rx_ring *rxr) 4239{ 4240 struct adapter *adapter = rxr->adapter; 4241 struct em_buffer *rxbuf = NULL; 4242 4243 INIT_DEBUGOUT("free_receive_buffers: begin"); 4244 4245 if (rxr->rx_buffers != NULL) { 4246 for (int i = 0; i < adapter->num_rx_desc; i++) { 4247 rxbuf = &rxr->rx_buffers[i]; 4248 if (rxbuf->map != NULL) { 4249 bus_dmamap_sync(rxr->rxtag, rxbuf->map, 4250 BUS_DMASYNC_POSTREAD); 4251 bus_dmamap_unload(rxr->rxtag, rxbuf->map); 4252 bus_dmamap_destroy(rxr->rxtag, rxbuf->map); 4253 } 4254 if (rxbuf->m_head != NULL) { 4255 m_freem(rxbuf->m_head); 4256 rxbuf->m_head = NULL; 4257 } 4258 } 4259 free(rxr->rx_buffers, M_DEVBUF); 4260 rxr->rx_buffers = NULL; 4261 rxr->next_to_check = 0; 4262 rxr->next_to_refresh = 0; 4263 } 4264 4265 if (rxr->rxtag != NULL) { 4266 bus_dma_tag_destroy(rxr->rxtag); 4267 rxr->rxtag = NULL; 4268 } 4269 4270 return; 4271} 4272 4273 4274/********************************************************************* 4275 * 4276 * Enable receive unit. 4277 * 4278 **********************************************************************/ 4279 4280static void 4281em_initialize_receive_unit(struct adapter *adapter) 4282{ 4283 struct rx_ring *rxr = adapter->rx_rings; 4284 struct ifnet *ifp = adapter->ifp; 4285 struct e1000_hw *hw = &adapter->hw; 4286 u64 bus_addr; 4287 u32 rctl, rxcsum; 4288 4289 INIT_DEBUGOUT("em_initialize_receive_units: begin"); 4290 4291 /* 4292 * Make sure receives are disabled while setting 4293 * up the descriptor ring 4294 */ 4295 rctl = E1000_READ_REG(hw, E1000_RCTL); 4296 /* Do not disable if ever enabled on this hardware */ 4297 if ((hw->mac.type != e1000_82574) && (hw->mac.type != e1000_82583)) 4298 E1000_WRITE_REG(hw, E1000_RCTL, rctl & ~E1000_RCTL_EN); 4299 4300 E1000_WRITE_REG(&adapter->hw, E1000_RADV, 4301 adapter->rx_abs_int_delay.value); 4302 /* 4303 * Set the interrupt throttling rate. Value is calculated 4304 * as DEFAULT_ITR = 1/(MAX_INTS_PER_SEC * 256ns) 4305 */ 4306 E1000_WRITE_REG(hw, E1000_ITR, DEFAULT_ITR); 4307 4308 /* 4309 ** When using MSIX interrupts we need to throttle 4310 ** using the EITR register (82574 only) 4311 */ 4312 if (hw->mac.type == e1000_82574) { 4313 for (int i = 0; i < 4; i++) 4314 E1000_WRITE_REG(hw, E1000_EITR_82574(i), 4315 DEFAULT_ITR); 4316 /* Disable accelerated acknowledge */ 4317 E1000_WRITE_REG(hw, E1000_RFCTL, E1000_RFCTL_ACK_DIS); 4318 } 4319 4320 rxcsum = E1000_READ_REG(hw, E1000_RXCSUM); 4321 if (ifp->if_capenable & IFCAP_RXCSUM) 4322 rxcsum |= E1000_RXCSUM_TUOFL; 4323 else 4324 rxcsum &= ~E1000_RXCSUM_TUOFL; 4325 E1000_WRITE_REG(hw, E1000_RXCSUM, rxcsum); 4326 4327 /* 4328 ** XXX TEMPORARY WORKAROUND: on some systems with 82573 4329 ** long latencies are observed, like Lenovo X60. This 4330 ** change eliminates the problem, but since having positive 4331 ** values in RDTR is a known source of problems on other 4332 ** platforms another solution is being sought. 4333 */ 4334 if (hw->mac.type == e1000_82573) 4335 E1000_WRITE_REG(hw, E1000_RDTR, 0x20); 4336 4337 for (int i = 0; i < adapter->num_queues; i++, rxr++) { 4338 /* Setup the Base and Length of the Rx Descriptor Ring */ 4339 u32 rdt = adapter->num_rx_desc - 1; /* default */ 4340 4341 bus_addr = rxr->rxdma.dma_paddr; 4342 E1000_WRITE_REG(hw, E1000_RDLEN(i), 4343 adapter->num_rx_desc * sizeof(struct e1000_rx_desc)); 4344 E1000_WRITE_REG(hw, E1000_RDBAH(i), (u32)(bus_addr >> 32)); 4345 E1000_WRITE_REG(hw, E1000_RDBAL(i), (u32)bus_addr); 4346 /* Setup the Head and Tail Descriptor Pointers */ 4347 E1000_WRITE_REG(hw, E1000_RDH(i), 0); 4348#ifdef DEV_NETMAP 4349 /* 4350 * an init() while a netmap client is active must 4351 * preserve the rx buffers passed to userspace. 4352 */ 4353 if (ifp->if_capenable & IFCAP_NETMAP) 4354 rdt -= nm_kr_rxspace(&NA(adapter->ifp)->rx_rings[i]); 4355#endif /* DEV_NETMAP */ 4356 E1000_WRITE_REG(hw, E1000_RDT(i), rdt); 4357 } 4358 4359 /* Set PTHRESH for improved jumbo performance */ 4360 if (((adapter->hw.mac.type == e1000_ich9lan) || 4361 (adapter->hw.mac.type == e1000_pch2lan) || 4362 (adapter->hw.mac.type == e1000_ich10lan)) && 4363 (ifp->if_mtu > ETHERMTU)) { 4364 u32 rxdctl = E1000_READ_REG(hw, E1000_RXDCTL(0)); 4365 E1000_WRITE_REG(hw, E1000_RXDCTL(0), rxdctl | 3); 4366 } 4367 4368 if (adapter->hw.mac.type >= e1000_pch2lan) { 4369 if (ifp->if_mtu > ETHERMTU) 4370 e1000_lv_jumbo_workaround_ich8lan(hw, TRUE); 4371 else 4372 e1000_lv_jumbo_workaround_ich8lan(hw, FALSE); 4373 } 4374 4375 /* Setup the Receive Control Register */ 4376 rctl &= ~(3 << E1000_RCTL_MO_SHIFT); 4377 rctl |= E1000_RCTL_EN | E1000_RCTL_BAM | 4378 E1000_RCTL_LBM_NO | E1000_RCTL_RDMTS_HALF | 4379 (hw->mac.mc_filter_type << E1000_RCTL_MO_SHIFT); 4380 4381 /* Strip the CRC */ 4382 rctl |= E1000_RCTL_SECRC; 4383 4384 /* Make sure VLAN Filters are off */ 4385 rctl &= ~E1000_RCTL_VFE; 4386 rctl &= ~E1000_RCTL_SBP; 4387 4388 if (adapter->rx_mbuf_sz == MCLBYTES) 4389 rctl |= E1000_RCTL_SZ_2048; 4390 else if (adapter->rx_mbuf_sz == MJUMPAGESIZE) 4391 rctl |= E1000_RCTL_SZ_4096 | E1000_RCTL_BSEX; 4392 else if (adapter->rx_mbuf_sz > MJUMPAGESIZE) 4393 rctl |= E1000_RCTL_SZ_8192 | E1000_RCTL_BSEX; 4394 4395 if (ifp->if_mtu > ETHERMTU) 4396 rctl |= E1000_RCTL_LPE; 4397 else 4398 rctl &= ~E1000_RCTL_LPE; 4399 4400 /* Write out the settings */ 4401 E1000_WRITE_REG(hw, E1000_RCTL, rctl); 4402 4403 return; 4404} 4405 4406 4407/********************************************************************* 4408 * 4409 * This routine executes in interrupt context. It replenishes 4410 * the mbufs in the descriptor and sends data which has been 4411 * dma'ed into host memory to upper layer. 4412 * 4413 * We loop at most count times if count is > 0, or until done if 4414 * count < 0. 4415 * 4416 * For polling we also now return the number of cleaned packets 4417 *********************************************************************/ 4418static bool 4419em_rxeof(struct rx_ring *rxr, int count, int *done) 4420{ 4421 struct adapter *adapter = rxr->adapter; 4422 struct ifnet *ifp = adapter->ifp; 4423 struct mbuf *mp, *sendmp; 4424 u8 status = 0; 4425 u16 len; 4426 int i, processed, rxdone = 0; 4427 bool eop; 4428 struct e1000_rx_desc *cur; 4429 4430 EM_RX_LOCK(rxr); 4431 4432#ifdef DEV_NETMAP 4433 if (netmap_rx_irq(ifp, rxr->me, &processed)) { 4434 EM_RX_UNLOCK(rxr); 4435 return (FALSE); 4436 } 4437#endif /* DEV_NETMAP */ 4438 4439 for (i = rxr->next_to_check, processed = 0; count != 0;) { 4440 4441 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) 4442 break; 4443 4444 bus_dmamap_sync(rxr->rxdma.dma_tag, rxr->rxdma.dma_map, 4445 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 4446 4447 cur = &rxr->rx_base[i]; 4448 status = cur->status; 4449 mp = sendmp = NULL; 4450 4451 if ((status & E1000_RXD_STAT_DD) == 0) 4452 break; 4453 4454 len = le16toh(cur->length); 4455 eop = (status & E1000_RXD_STAT_EOP) != 0; 4456 4457 if ((cur->errors & E1000_RXD_ERR_FRAME_ERR_MASK) || 4458 (rxr->discard == TRUE)) { 4459 adapter->dropped_pkts++; 4460 ++rxr->rx_discarded; 4461 if (!eop) /* Catch subsequent segs */ 4462 rxr->discard = TRUE; 4463 else 4464 rxr->discard = FALSE; 4465 em_rx_discard(rxr, i); 4466 goto next_desc; 4467 } 4468 bus_dmamap_unload(rxr->rxtag, rxr->rx_buffers[i].map); 4469 4470 /* Assign correct length to the current fragment */ 4471 mp = rxr->rx_buffers[i].m_head; 4472 mp->m_len = len; 4473 4474 /* Trigger for refresh */ 4475 rxr->rx_buffers[i].m_head = NULL; 4476 4477 /* First segment? */ 4478 if (rxr->fmp == NULL) { 4479 mp->m_pkthdr.len = len; 4480 rxr->fmp = rxr->lmp = mp; 4481 } else { 4482 /* Chain mbuf's together */ 4483 mp->m_flags &= ~M_PKTHDR; 4484 rxr->lmp->m_next = mp; 4485 rxr->lmp = mp; 4486 rxr->fmp->m_pkthdr.len += len; 4487 } 4488 4489 if (eop) { 4490 --count; 4491 sendmp = rxr->fmp; 4492 sendmp->m_pkthdr.rcvif = ifp; 4493 ifp->if_ipackets++; 4494 em_receive_checksum(cur, sendmp); 4495#ifndef __NO_STRICT_ALIGNMENT 4496 if (adapter->hw.mac.max_frame_size > 4497 (MCLBYTES - ETHER_ALIGN) && 4498 em_fixup_rx(rxr) != 0) 4499 goto skip; 4500#endif 4501 if (status & E1000_RXD_STAT_VP) { 4502 sendmp->m_pkthdr.ether_vtag = 4503 le16toh(cur->special); 4504 sendmp->m_flags |= M_VLANTAG; 4505 } 4506#ifndef __NO_STRICT_ALIGNMENT 4507skip: 4508#endif 4509 rxr->fmp = rxr->lmp = NULL; 4510 } 4511next_desc: 4512 /* Zero out the receive descriptors status. */ 4513 cur->status = 0; 4514 ++rxdone; /* cumulative for POLL */ 4515 ++processed; 4516 4517 /* Advance our pointers to the next descriptor. */ 4518 if (++i == adapter->num_rx_desc) 4519 i = 0; 4520 4521 /* Send to the stack */ 4522 if (sendmp != NULL) { 4523 rxr->next_to_check = i; 4524 EM_RX_UNLOCK(rxr); 4525 (*ifp->if_input)(ifp, sendmp); 4526 EM_RX_LOCK(rxr); 4527 i = rxr->next_to_check; 4528 } 4529 4530 /* Only refresh mbufs every 8 descriptors */ 4531 if (processed == 8) { 4532 em_refresh_mbufs(rxr, i); 4533 processed = 0; 4534 } 4535 } 4536 4537 /* Catch any remaining refresh work */ 4538 if (e1000_rx_unrefreshed(rxr)) 4539 em_refresh_mbufs(rxr, i); 4540 4541 rxr->next_to_check = i; 4542 if (done != NULL) 4543 *done = rxdone; 4544 EM_RX_UNLOCK(rxr); 4545 4546 return ((status & E1000_RXD_STAT_DD) ? TRUE : FALSE); 4547} 4548 4549static __inline void 4550em_rx_discard(struct rx_ring *rxr, int i) 4551{ 4552 struct em_buffer *rbuf; 4553 4554 rbuf = &rxr->rx_buffers[i]; 4555 bus_dmamap_unload(rxr->rxtag, rbuf->map); 4556 4557 /* Free any previous pieces */ 4558 if (rxr->fmp != NULL) { 4559 rxr->fmp->m_flags |= M_PKTHDR; 4560 m_freem(rxr->fmp); 4561 rxr->fmp = NULL; 4562 rxr->lmp = NULL; 4563 } 4564 /* 4565 ** Free buffer and allow em_refresh_mbufs() 4566 ** to clean up and recharge buffer. 4567 */ 4568 if (rbuf->m_head) { 4569 m_free(rbuf->m_head); 4570 rbuf->m_head = NULL; 4571 } 4572 return; 4573} 4574 4575#ifndef __NO_STRICT_ALIGNMENT 4576/* 4577 * When jumbo frames are enabled we should realign entire payload on 4578 * architecures with strict alignment. This is serious design mistake of 8254x 4579 * as it nullifies DMA operations. 8254x just allows RX buffer size to be 4580 * 2048/4096/8192/16384. What we really want is 2048 - ETHER_ALIGN to align its 4581 * payload. On architecures without strict alignment restrictions 8254x still 4582 * performs unaligned memory access which would reduce the performance too. 4583 * To avoid copying over an entire frame to align, we allocate a new mbuf and 4584 * copy ethernet header to the new mbuf. The new mbuf is prepended into the 4585 * existing mbuf chain. 4586 * 4587 * Be aware, best performance of the 8254x is achived only when jumbo frame is 4588 * not used at all on architectures with strict alignment. 4589 */ 4590static int 4591em_fixup_rx(struct rx_ring *rxr) 4592{ 4593 struct adapter *adapter = rxr->adapter; 4594 struct mbuf *m, *n; 4595 int error; 4596 4597 error = 0; 4598 m = rxr->fmp; 4599 if (m->m_len <= (MCLBYTES - ETHER_HDR_LEN)) { 4600 bcopy(m->m_data, m->m_data + ETHER_HDR_LEN, m->m_len); 4601 m->m_data += ETHER_HDR_LEN; 4602 } else { 4603 MGETHDR(n, M_NOWAIT, MT_DATA); 4604 if (n != NULL) { 4605 bcopy(m->m_data, n->m_data, ETHER_HDR_LEN); 4606 m->m_data += ETHER_HDR_LEN; 4607 m->m_len -= ETHER_HDR_LEN; 4608 n->m_len = ETHER_HDR_LEN; 4609 M_MOVE_PKTHDR(n, m); 4610 n->m_next = m; 4611 rxr->fmp = n; 4612 } else { 4613 adapter->dropped_pkts++; 4614 m_freem(rxr->fmp); 4615 rxr->fmp = NULL; 4616 error = ENOMEM; 4617 } 4618 } 4619 4620 return (error); 4621} 4622#endif 4623 4624/********************************************************************* 4625 * 4626 * Verify that the hardware indicated that the checksum is valid. 4627 * Inform the stack about the status of checksum so that stack 4628 * doesn't spend time verifying the checksum. 4629 * 4630 *********************************************************************/ 4631static void 4632em_receive_checksum(struct e1000_rx_desc *rx_desc, struct mbuf *mp) 4633{ 4634 mp->m_pkthdr.csum_flags = 0; 4635 4636 /* Ignore Checksum bit is set */ 4637 if (rx_desc->status & E1000_RXD_STAT_IXSM) 4638 return; 4639 4640 if (rx_desc->errors & (E1000_RXD_ERR_TCPE | E1000_RXD_ERR_IPE)) 4641 return; 4642 4643 /* IP Checksum Good? */ 4644 if (rx_desc->status & E1000_RXD_STAT_IPCS) 4645 mp->m_pkthdr.csum_flags = (CSUM_IP_CHECKED | CSUM_IP_VALID); 4646 4647 /* TCP or UDP checksum */ 4648 if (rx_desc->status & (E1000_RXD_STAT_TCPCS | E1000_RXD_STAT_UDPCS)) { 4649 mp->m_pkthdr.csum_flags |= (CSUM_DATA_VALID | CSUM_PSEUDO_HDR); 4650 mp->m_pkthdr.csum_data = htons(0xffff); 4651 } 4652} 4653 4654/* 4655 * This routine is run via an vlan 4656 * config EVENT 4657 */ 4658static void 4659em_register_vlan(void *arg, struct ifnet *ifp, u16 vtag) 4660{ 4661 struct adapter *adapter = ifp->if_softc; 4662 u32 index, bit; 4663 4664 if (ifp->if_softc != arg) /* Not our event */ 4665 return; 4666 4667 if ((vtag == 0) || (vtag > 4095)) /* Invalid ID */ 4668 return; 4669 4670 EM_CORE_LOCK(adapter); 4671 index = (vtag >> 5) & 0x7F; 4672 bit = vtag & 0x1F; 4673 adapter->shadow_vfta[index] |= (1 << bit); 4674 ++adapter->num_vlans; 4675 /* Re-init to load the changes */ 4676 if (ifp->if_capenable & IFCAP_VLAN_HWFILTER) 4677 em_init_locked(adapter); 4678 EM_CORE_UNLOCK(adapter); 4679} 4680 4681/* 4682 * This routine is run via an vlan 4683 * unconfig EVENT 4684 */ 4685static void 4686em_unregister_vlan(void *arg, struct ifnet *ifp, u16 vtag) 4687{ 4688 struct adapter *adapter = ifp->if_softc; 4689 u32 index, bit; 4690 4691 if (ifp->if_softc != arg) 4692 return; 4693 4694 if ((vtag == 0) || (vtag > 4095)) /* Invalid */ 4695 return; 4696 4697 EM_CORE_LOCK(adapter); 4698 index = (vtag >> 5) & 0x7F; 4699 bit = vtag & 0x1F; 4700 adapter->shadow_vfta[index] &= ~(1 << bit); 4701 --adapter->num_vlans; 4702 /* Re-init to load the changes */ 4703 if (ifp->if_capenable & IFCAP_VLAN_HWFILTER) 4704 em_init_locked(adapter); 4705 EM_CORE_UNLOCK(adapter); 4706} 4707 4708static void 4709em_setup_vlan_hw_support(struct adapter *adapter) 4710{ 4711 struct e1000_hw *hw = &adapter->hw; 4712 u32 reg; 4713 4714 /* 4715 ** We get here thru init_locked, meaning 4716 ** a soft reset, this has already cleared 4717 ** the VFTA and other state, so if there 4718 ** have been no vlan's registered do nothing. 4719 */ 4720 if (adapter->num_vlans == 0) 4721 return; 4722 4723 /* 4724 ** A soft reset zero's out the VFTA, so 4725 ** we need to repopulate it now. 4726 */ 4727 for (int i = 0; i < EM_VFTA_SIZE; i++) 4728 if (adapter->shadow_vfta[i] != 0) 4729 E1000_WRITE_REG_ARRAY(hw, E1000_VFTA, 4730 i, adapter->shadow_vfta[i]); 4731 4732 reg = E1000_READ_REG(hw, E1000_CTRL); 4733 reg |= E1000_CTRL_VME; 4734 E1000_WRITE_REG(hw, E1000_CTRL, reg); 4735 4736 /* Enable the Filter Table */ 4737 reg = E1000_READ_REG(hw, E1000_RCTL); 4738 reg &= ~E1000_RCTL_CFIEN; 4739 reg |= E1000_RCTL_VFE; 4740 E1000_WRITE_REG(hw, E1000_RCTL, reg); 4741} 4742 4743static void 4744em_enable_intr(struct adapter *adapter) 4745{ 4746 struct e1000_hw *hw = &adapter->hw; 4747 u32 ims_mask = IMS_ENABLE_MASK; 4748 4749 if (hw->mac.type == e1000_82574) { 4750 E1000_WRITE_REG(hw, EM_EIAC, EM_MSIX_MASK); 4751 ims_mask |= EM_MSIX_MASK; 4752 } 4753 E1000_WRITE_REG(hw, E1000_IMS, ims_mask); 4754} 4755 4756static void 4757em_disable_intr(struct adapter *adapter) 4758{ 4759 struct e1000_hw *hw = &adapter->hw; 4760 4761 if (hw->mac.type == e1000_82574) 4762 E1000_WRITE_REG(hw, EM_EIAC, 0); 4763 E1000_WRITE_REG(&adapter->hw, E1000_IMC, 0xffffffff); 4764} 4765 4766/* 4767 * Bit of a misnomer, what this really means is 4768 * to enable OS management of the system... aka 4769 * to disable special hardware management features 4770 */ 4771static void 4772em_init_manageability(struct adapter *adapter) 4773{ 4774 /* A shared code workaround */ 4775#define E1000_82542_MANC2H E1000_MANC2H 4776 if (adapter->has_manage) { 4777 int manc2h = E1000_READ_REG(&adapter->hw, E1000_MANC2H); 4778 int manc = E1000_READ_REG(&adapter->hw, E1000_MANC); 4779 4780 /* disable hardware interception of ARP */ 4781 manc &= ~(E1000_MANC_ARP_EN); 4782 4783 /* enable receiving management packets to the host */ 4784 manc |= E1000_MANC_EN_MNG2HOST; 4785#define E1000_MNG2HOST_PORT_623 (1 << 5) 4786#define E1000_MNG2HOST_PORT_664 (1 << 6) 4787 manc2h |= E1000_MNG2HOST_PORT_623; 4788 manc2h |= E1000_MNG2HOST_PORT_664; 4789 E1000_WRITE_REG(&adapter->hw, E1000_MANC2H, manc2h); 4790 E1000_WRITE_REG(&adapter->hw, E1000_MANC, manc); 4791 } 4792} 4793 4794/* 4795 * Give control back to hardware management 4796 * controller if there is one. 4797 */ 4798static void 4799em_release_manageability(struct adapter *adapter) 4800{ 4801 if (adapter->has_manage) { 4802 int manc = E1000_READ_REG(&adapter->hw, E1000_MANC); 4803 4804 /* re-enable hardware interception of ARP */ 4805 manc |= E1000_MANC_ARP_EN; 4806 manc &= ~E1000_MANC_EN_MNG2HOST; 4807 4808 E1000_WRITE_REG(&adapter->hw, E1000_MANC, manc); 4809 } 4810} 4811 4812/* 4813 * em_get_hw_control sets the {CTRL_EXT|FWSM}:DRV_LOAD bit. 4814 * For ASF and Pass Through versions of f/w this means 4815 * that the driver is loaded. For AMT version type f/w 4816 * this means that the network i/f is open. 4817 */ 4818static void 4819em_get_hw_control(struct adapter *adapter) 4820{ 4821 u32 ctrl_ext, swsm; 4822 4823 if (adapter->hw.mac.type == e1000_82573) { 4824 swsm = E1000_READ_REG(&adapter->hw, E1000_SWSM); 4825 E1000_WRITE_REG(&adapter->hw, E1000_SWSM, 4826 swsm | E1000_SWSM_DRV_LOAD); 4827 return; 4828 } 4829 /* else */ 4830 ctrl_ext = E1000_READ_REG(&adapter->hw, E1000_CTRL_EXT); 4831 E1000_WRITE_REG(&adapter->hw, E1000_CTRL_EXT, 4832 ctrl_ext | E1000_CTRL_EXT_DRV_LOAD); 4833 return; 4834} 4835 4836/* 4837 * em_release_hw_control resets {CTRL_EXT|FWSM}:DRV_LOAD bit. 4838 * For ASF and Pass Through versions of f/w this means that 4839 * the driver is no longer loaded. For AMT versions of the 4840 * f/w this means that the network i/f is closed. 4841 */ 4842static void 4843em_release_hw_control(struct adapter *adapter) 4844{ 4845 u32 ctrl_ext, swsm; 4846 4847 if (!adapter->has_manage) 4848 return; 4849 4850 if (adapter->hw.mac.type == e1000_82573) { 4851 swsm = E1000_READ_REG(&adapter->hw, E1000_SWSM); 4852 E1000_WRITE_REG(&adapter->hw, E1000_SWSM, 4853 swsm & ~E1000_SWSM_DRV_LOAD); 4854 return; 4855 } 4856 /* else */ 4857 ctrl_ext = E1000_READ_REG(&adapter->hw, E1000_CTRL_EXT); 4858 E1000_WRITE_REG(&adapter->hw, E1000_CTRL_EXT, 4859 ctrl_ext & ~E1000_CTRL_EXT_DRV_LOAD); 4860 return; 4861} 4862 4863static int 4864em_is_valid_ether_addr(u8 *addr) 4865{ 4866 char zero_addr[6] = { 0, 0, 0, 0, 0, 0 }; 4867 4868 if ((addr[0] & 1) || (!bcmp(addr, zero_addr, ETHER_ADDR_LEN))) { 4869 return (FALSE); 4870 } 4871 4872 return (TRUE); 4873} 4874 4875/* 4876** Parse the interface capabilities with regard 4877** to both system management and wake-on-lan for 4878** later use. 4879*/ 4880static void 4881em_get_wakeup(device_t dev) 4882{ 4883 struct adapter *adapter = device_get_softc(dev); 4884 u16 eeprom_data = 0, device_id, apme_mask; 4885 4886 adapter->has_manage = e1000_enable_mng_pass_thru(&adapter->hw); 4887 apme_mask = EM_EEPROM_APME; 4888 4889 switch (adapter->hw.mac.type) { 4890 case e1000_82573: 4891 case e1000_82583: 4892 adapter->has_amt = TRUE; 4893 /* Falls thru */ 4894 case e1000_82571: 4895 case e1000_82572: 4896 case e1000_80003es2lan: 4897 if (adapter->hw.bus.func == 1) { 4898 e1000_read_nvm(&adapter->hw, 4899 NVM_INIT_CONTROL3_PORT_B, 1, &eeprom_data); 4900 break; 4901 } else 4902 e1000_read_nvm(&adapter->hw, 4903 NVM_INIT_CONTROL3_PORT_A, 1, &eeprom_data); 4904 break; 4905 case e1000_ich8lan: 4906 case e1000_ich9lan: 4907 case e1000_ich10lan: 4908 case e1000_pchlan: 4909 case e1000_pch2lan: 4910 apme_mask = E1000_WUC_APME; 4911 adapter->has_amt = TRUE; 4912 eeprom_data = E1000_READ_REG(&adapter->hw, E1000_WUC); 4913 break; 4914 default: 4915 e1000_read_nvm(&adapter->hw, 4916 NVM_INIT_CONTROL3_PORT_A, 1, &eeprom_data); 4917 break; 4918 } 4919 if (eeprom_data & apme_mask) 4920 adapter->wol = (E1000_WUFC_MAG | E1000_WUFC_MC); 4921 /* 4922 * We have the eeprom settings, now apply the special cases 4923 * where the eeprom may be wrong or the board won't support 4924 * wake on lan on a particular port 4925 */ 4926 device_id = pci_get_device(dev); 4927 switch (device_id) { 4928 case E1000_DEV_ID_82571EB_FIBER: 4929 /* Wake events only supported on port A for dual fiber 4930 * regardless of eeprom setting */ 4931 if (E1000_READ_REG(&adapter->hw, E1000_STATUS) & 4932 E1000_STATUS_FUNC_1) 4933 adapter->wol = 0; 4934 break; 4935 case E1000_DEV_ID_82571EB_QUAD_COPPER: 4936 case E1000_DEV_ID_82571EB_QUAD_FIBER: 4937 case E1000_DEV_ID_82571EB_QUAD_COPPER_LP: 4938 /* if quad port adapter, disable WoL on all but port A */ 4939 if (global_quad_port_a != 0) 4940 adapter->wol = 0; 4941 /* Reset for multiple quad port adapters */ 4942 if (++global_quad_port_a == 4) 4943 global_quad_port_a = 0; 4944 break; 4945 } 4946 return; 4947} 4948 4949 4950/* 4951 * Enable PCI Wake On Lan capability 4952 */ 4953static void 4954em_enable_wakeup(device_t dev) 4955{ 4956 struct adapter *adapter = device_get_softc(dev); 4957 struct ifnet *ifp = adapter->ifp; 4958 u32 pmc, ctrl, ctrl_ext, rctl; 4959 u16 status; 4960 4961 if ((pci_find_cap(dev, PCIY_PMG, &pmc) != 0)) 4962 return; 4963 4964 /* Advertise the wakeup capability */ 4965 ctrl = E1000_READ_REG(&adapter->hw, E1000_CTRL); 4966 ctrl |= (E1000_CTRL_SWDPIN2 | E1000_CTRL_SWDPIN3); 4967 E1000_WRITE_REG(&adapter->hw, E1000_CTRL, ctrl); 4968 E1000_WRITE_REG(&adapter->hw, E1000_WUC, E1000_WUC_PME_EN); 4969 4970 if ((adapter->hw.mac.type == e1000_ich8lan) || 4971 (adapter->hw.mac.type == e1000_pchlan) || 4972 (adapter->hw.mac.type == e1000_ich9lan) || 4973 (adapter->hw.mac.type == e1000_ich10lan)) 4974 e1000_suspend_workarounds_ich8lan(&adapter->hw); 4975 4976 /* Keep the laser running on Fiber adapters */ 4977 if (adapter->hw.phy.media_type == e1000_media_type_fiber || 4978 adapter->hw.phy.media_type == e1000_media_type_internal_serdes) { 4979 ctrl_ext = E1000_READ_REG(&adapter->hw, E1000_CTRL_EXT); 4980 ctrl_ext |= E1000_CTRL_EXT_SDP3_DATA; 4981 E1000_WRITE_REG(&adapter->hw, E1000_CTRL_EXT, ctrl_ext); 4982 } 4983 4984 /* 4985 ** Determine type of Wakeup: note that wol 4986 ** is set with all bits on by default. 4987 */ 4988 if ((ifp->if_capenable & IFCAP_WOL_MAGIC) == 0) 4989 adapter->wol &= ~E1000_WUFC_MAG; 4990 4991 if ((ifp->if_capenable & IFCAP_WOL_MCAST) == 0) 4992 adapter->wol &= ~E1000_WUFC_MC; 4993 else { 4994 rctl = E1000_READ_REG(&adapter->hw, E1000_RCTL); 4995 rctl |= E1000_RCTL_MPE; 4996 E1000_WRITE_REG(&adapter->hw, E1000_RCTL, rctl); 4997 } 4998 4999 if ((adapter->hw.mac.type == e1000_pchlan) || 5000 (adapter->hw.mac.type == e1000_pch2lan)) { 5001 if (em_enable_phy_wakeup(adapter)) 5002 return; 5003 } else { 5004 E1000_WRITE_REG(&adapter->hw, E1000_WUC, E1000_WUC_PME_EN); 5005 E1000_WRITE_REG(&adapter->hw, E1000_WUFC, adapter->wol); 5006 } 5007 5008 if (adapter->hw.phy.type == e1000_phy_igp_3) 5009 e1000_igp3_phy_powerdown_workaround_ich8lan(&adapter->hw); 5010 5011 /* Request PME */ 5012 status = pci_read_config(dev, pmc + PCIR_POWER_STATUS, 2); 5013 status &= ~(PCIM_PSTAT_PME | PCIM_PSTAT_PMEENABLE); 5014 if (ifp->if_capenable & IFCAP_WOL) 5015 status |= PCIM_PSTAT_PME | PCIM_PSTAT_PMEENABLE; 5016 pci_write_config(dev, pmc + PCIR_POWER_STATUS, status, 2); 5017 5018 return; 5019} 5020 5021/* 5022** WOL in the newer chipset interfaces (pchlan) 5023** require thing to be copied into the phy 5024*/ 5025static int 5026em_enable_phy_wakeup(struct adapter *adapter) 5027{ 5028 struct e1000_hw *hw = &adapter->hw; 5029 u32 mreg, ret = 0; 5030 u16 preg; 5031 5032 /* copy MAC RARs to PHY RARs */ 5033 e1000_copy_rx_addrs_to_phy_ich8lan(hw); 5034 5035 /* copy MAC MTA to PHY MTA */ 5036 for (int i = 0; i < adapter->hw.mac.mta_reg_count; i++) { 5037 mreg = E1000_READ_REG_ARRAY(hw, E1000_MTA, i); 5038 e1000_write_phy_reg(hw, BM_MTA(i), (u16)(mreg & 0xFFFF)); 5039 e1000_write_phy_reg(hw, BM_MTA(i) + 1, 5040 (u16)((mreg >> 16) & 0xFFFF)); 5041 } 5042 5043 /* configure PHY Rx Control register */ 5044 e1000_read_phy_reg(&adapter->hw, BM_RCTL, &preg); 5045 mreg = E1000_READ_REG(hw, E1000_RCTL); 5046 if (mreg & E1000_RCTL_UPE) 5047 preg |= BM_RCTL_UPE; 5048 if (mreg & E1000_RCTL_MPE) 5049 preg |= BM_RCTL_MPE; 5050 preg &= ~(BM_RCTL_MO_MASK); 5051 if (mreg & E1000_RCTL_MO_3) 5052 preg |= (((mreg & E1000_RCTL_MO_3) >> E1000_RCTL_MO_SHIFT) 5053 << BM_RCTL_MO_SHIFT); 5054 if (mreg & E1000_RCTL_BAM) 5055 preg |= BM_RCTL_BAM; 5056 if (mreg & E1000_RCTL_PMCF) 5057 preg |= BM_RCTL_PMCF; 5058 mreg = E1000_READ_REG(hw, E1000_CTRL); 5059 if (mreg & E1000_CTRL_RFCE) 5060 preg |= BM_RCTL_RFCE; 5061 e1000_write_phy_reg(&adapter->hw, BM_RCTL, preg); 5062 5063 /* enable PHY wakeup in MAC register */ 5064 E1000_WRITE_REG(hw, E1000_WUC, 5065 E1000_WUC_PHY_WAKE | E1000_WUC_PME_EN); 5066 E1000_WRITE_REG(hw, E1000_WUFC, adapter->wol); 5067 5068 /* configure and enable PHY wakeup in PHY registers */ 5069 e1000_write_phy_reg(&adapter->hw, BM_WUFC, adapter->wol); 5070 e1000_write_phy_reg(&adapter->hw, BM_WUC, E1000_WUC_PME_EN); 5071 5072 /* activate PHY wakeup */ 5073 ret = hw->phy.ops.acquire(hw); 5074 if (ret) { 5075 printf("Could not acquire PHY\n"); 5076 return ret; 5077 } 5078 e1000_write_phy_reg_mdic(hw, IGP01E1000_PHY_PAGE_SELECT, 5079 (BM_WUC_ENABLE_PAGE << IGP_PAGE_SHIFT)); 5080 ret = e1000_read_phy_reg_mdic(hw, BM_WUC_ENABLE_REG, &preg); 5081 if (ret) { 5082 printf("Could not read PHY page 769\n"); 5083 goto out; 5084 } 5085 preg |= BM_WUC_ENABLE_BIT | BM_WUC_HOST_WU_BIT; 5086 ret = e1000_write_phy_reg_mdic(hw, BM_WUC_ENABLE_REG, preg); 5087 if (ret) 5088 printf("Could not set PHY Host Wakeup bit\n"); 5089out: 5090 hw->phy.ops.release(hw); 5091 5092 return ret; 5093} 5094 5095static void 5096em_led_func(void *arg, int onoff) 5097{ 5098 struct adapter *adapter = arg; 5099 5100 EM_CORE_LOCK(adapter); 5101 if (onoff) { 5102 e1000_setup_led(&adapter->hw); 5103 e1000_led_on(&adapter->hw); 5104 } else { 5105 e1000_led_off(&adapter->hw); 5106 e1000_cleanup_led(&adapter->hw); 5107 } 5108 EM_CORE_UNLOCK(adapter); 5109} 5110 5111/* 5112** Disable the L0S and L1 LINK states 5113*/ 5114static void 5115em_disable_aspm(struct adapter *adapter) 5116{ 5117 int base, reg; 5118 u16 link_cap,link_ctrl; 5119 device_t dev = adapter->dev; 5120 5121 switch (adapter->hw.mac.type) { 5122 case e1000_82573: 5123 case e1000_82574: 5124 case e1000_82583: 5125 break; 5126 default: 5127 return; 5128 } 5129 if (pci_find_cap(dev, PCIY_EXPRESS, &base) != 0) 5130 return; 5131 reg = base + PCIER_LINK_CAP; 5132 link_cap = pci_read_config(dev, reg, 2); 5133 if ((link_cap & PCIEM_LINK_CAP_ASPM) == 0) 5134 return; 5135 reg = base + PCIER_LINK_CTL; 5136 link_ctrl = pci_read_config(dev, reg, 2); 5137 link_ctrl &= ~PCIEM_LINK_CTL_ASPMC; 5138 pci_write_config(dev, reg, link_ctrl, 2); 5139 return; 5140} 5141 5142/********************************************************************** 5143 * 5144 * Update the board statistics counters. 5145 * 5146 **********************************************************************/ 5147static void 5148em_update_stats_counters(struct adapter *adapter) 5149{ 5150 struct ifnet *ifp; 5151 5152 if(adapter->hw.phy.media_type == e1000_media_type_copper || 5153 (E1000_READ_REG(&adapter->hw, E1000_STATUS) & E1000_STATUS_LU)) { 5154 adapter->stats.symerrs += E1000_READ_REG(&adapter->hw, E1000_SYMERRS); 5155 adapter->stats.sec += E1000_READ_REG(&adapter->hw, E1000_SEC); 5156 } 5157 adapter->stats.crcerrs += E1000_READ_REG(&adapter->hw, E1000_CRCERRS); 5158 adapter->stats.mpc += E1000_READ_REG(&adapter->hw, E1000_MPC); 5159 adapter->stats.scc += E1000_READ_REG(&adapter->hw, E1000_SCC); 5160 adapter->stats.ecol += E1000_READ_REG(&adapter->hw, E1000_ECOL); 5161 5162 adapter->stats.mcc += E1000_READ_REG(&adapter->hw, E1000_MCC); 5163 adapter->stats.latecol += E1000_READ_REG(&adapter->hw, E1000_LATECOL); 5164 adapter->stats.colc += E1000_READ_REG(&adapter->hw, E1000_COLC); 5165 adapter->stats.dc += E1000_READ_REG(&adapter->hw, E1000_DC); 5166 adapter->stats.rlec += E1000_READ_REG(&adapter->hw, E1000_RLEC); 5167 adapter->stats.xonrxc += E1000_READ_REG(&adapter->hw, E1000_XONRXC); 5168 adapter->stats.xontxc += E1000_READ_REG(&adapter->hw, E1000_XONTXC); 5169 /* 5170 ** For watchdog management we need to know if we have been 5171 ** paused during the last interval, so capture that here. 5172 */ 5173 adapter->pause_frames = E1000_READ_REG(&adapter->hw, E1000_XOFFRXC); 5174 adapter->stats.xoffrxc += adapter->pause_frames; 5175 adapter->stats.xofftxc += E1000_READ_REG(&adapter->hw, E1000_XOFFTXC); 5176 adapter->stats.fcruc += E1000_READ_REG(&adapter->hw, E1000_FCRUC); 5177 adapter->stats.prc64 += E1000_READ_REG(&adapter->hw, E1000_PRC64); 5178 adapter->stats.prc127 += E1000_READ_REG(&adapter->hw, E1000_PRC127); 5179 adapter->stats.prc255 += E1000_READ_REG(&adapter->hw, E1000_PRC255); 5180 adapter->stats.prc511 += E1000_READ_REG(&adapter->hw, E1000_PRC511); 5181 adapter->stats.prc1023 += E1000_READ_REG(&adapter->hw, E1000_PRC1023); 5182 adapter->stats.prc1522 += E1000_READ_REG(&adapter->hw, E1000_PRC1522); 5183 adapter->stats.gprc += E1000_READ_REG(&adapter->hw, E1000_GPRC); 5184 adapter->stats.bprc += E1000_READ_REG(&adapter->hw, E1000_BPRC); 5185 adapter->stats.mprc += E1000_READ_REG(&adapter->hw, E1000_MPRC); 5186 adapter->stats.gptc += E1000_READ_REG(&adapter->hw, E1000_GPTC); 5187 5188 /* For the 64-bit byte counters the low dword must be read first. */ 5189 /* Both registers clear on the read of the high dword */ 5190 5191 adapter->stats.gorc += E1000_READ_REG(&adapter->hw, E1000_GORCL) + 5192 ((u64)E1000_READ_REG(&adapter->hw, E1000_GORCH) << 32); 5193 adapter->stats.gotc += E1000_READ_REG(&adapter->hw, E1000_GOTCL) + 5194 ((u64)E1000_READ_REG(&adapter->hw, E1000_GOTCH) << 32); 5195 5196 adapter->stats.rnbc += E1000_READ_REG(&adapter->hw, E1000_RNBC); 5197 adapter->stats.ruc += E1000_READ_REG(&adapter->hw, E1000_RUC); 5198 adapter->stats.rfc += E1000_READ_REG(&adapter->hw, E1000_RFC); 5199 adapter->stats.roc += E1000_READ_REG(&adapter->hw, E1000_ROC); 5200 adapter->stats.rjc += E1000_READ_REG(&adapter->hw, E1000_RJC); 5201 5202 adapter->stats.tor += E1000_READ_REG(&adapter->hw, E1000_TORH); 5203 adapter->stats.tot += E1000_READ_REG(&adapter->hw, E1000_TOTH); 5204 5205 adapter->stats.tpr += E1000_READ_REG(&adapter->hw, E1000_TPR); 5206 adapter->stats.tpt += E1000_READ_REG(&adapter->hw, E1000_TPT); 5207 adapter->stats.ptc64 += E1000_READ_REG(&adapter->hw, E1000_PTC64); 5208 adapter->stats.ptc127 += E1000_READ_REG(&adapter->hw, E1000_PTC127); 5209 adapter->stats.ptc255 += E1000_READ_REG(&adapter->hw, E1000_PTC255); 5210 adapter->stats.ptc511 += E1000_READ_REG(&adapter->hw, E1000_PTC511); 5211 adapter->stats.ptc1023 += E1000_READ_REG(&adapter->hw, E1000_PTC1023); 5212 adapter->stats.ptc1522 += E1000_READ_REG(&adapter->hw, E1000_PTC1522); 5213 adapter->stats.mptc += E1000_READ_REG(&adapter->hw, E1000_MPTC); 5214 adapter->stats.bptc += E1000_READ_REG(&adapter->hw, E1000_BPTC); 5215 5216 /* Interrupt Counts */ 5217 5218 adapter->stats.iac += E1000_READ_REG(&adapter->hw, E1000_IAC); 5219 adapter->stats.icrxptc += E1000_READ_REG(&adapter->hw, E1000_ICRXPTC); 5220 adapter->stats.icrxatc += E1000_READ_REG(&adapter->hw, E1000_ICRXATC); 5221 adapter->stats.ictxptc += E1000_READ_REG(&adapter->hw, E1000_ICTXPTC); 5222 adapter->stats.ictxatc += E1000_READ_REG(&adapter->hw, E1000_ICTXATC); 5223 adapter->stats.ictxqec += E1000_READ_REG(&adapter->hw, E1000_ICTXQEC); 5224 adapter->stats.ictxqmtc += E1000_READ_REG(&adapter->hw, E1000_ICTXQMTC); 5225 adapter->stats.icrxdmtc += E1000_READ_REG(&adapter->hw, E1000_ICRXDMTC); 5226 adapter->stats.icrxoc += E1000_READ_REG(&adapter->hw, E1000_ICRXOC); 5227 5228 if (adapter->hw.mac.type >= e1000_82543) { 5229 adapter->stats.algnerrc += 5230 E1000_READ_REG(&adapter->hw, E1000_ALGNERRC); 5231 adapter->stats.rxerrc += 5232 E1000_READ_REG(&adapter->hw, E1000_RXERRC); 5233 adapter->stats.tncrs += 5234 E1000_READ_REG(&adapter->hw, E1000_TNCRS); 5235 adapter->stats.cexterr += 5236 E1000_READ_REG(&adapter->hw, E1000_CEXTERR); 5237 adapter->stats.tsctc += 5238 E1000_READ_REG(&adapter->hw, E1000_TSCTC); 5239 adapter->stats.tsctfc += 5240 E1000_READ_REG(&adapter->hw, E1000_TSCTFC); 5241 } 5242 ifp = adapter->ifp; 5243 5244 ifp->if_collisions = adapter->stats.colc; 5245 5246 /* Rx Errors */ 5247 ifp->if_ierrors = adapter->dropped_pkts + adapter->stats.rxerrc + 5248 adapter->stats.crcerrs + adapter->stats.algnerrc + 5249 adapter->stats.ruc + adapter->stats.roc + 5250 adapter->stats.mpc + adapter->stats.cexterr; 5251 5252 /* Tx Errors */ 5253 ifp->if_oerrors = adapter->stats.ecol + 5254 adapter->stats.latecol + adapter->watchdog_events; 5255} 5256 5257/* Export a single 32-bit register via a read-only sysctl. */ 5258static int 5259em_sysctl_reg_handler(SYSCTL_HANDLER_ARGS) 5260{ 5261 struct adapter *adapter; 5262 u_int val; 5263 5264 adapter = oidp->oid_arg1; 5265 val = E1000_READ_REG(&adapter->hw, oidp->oid_arg2); 5266 return (sysctl_handle_int(oidp, &val, 0, req)); 5267} 5268 5269/* 5270 * Add sysctl variables, one per statistic, to the system. 5271 */ 5272static void 5273em_add_hw_stats(struct adapter *adapter) 5274{ 5275 device_t dev = adapter->dev; 5276 5277 struct tx_ring *txr = adapter->tx_rings; 5278 struct rx_ring *rxr = adapter->rx_rings; 5279 5280 struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(dev); 5281 struct sysctl_oid *tree = device_get_sysctl_tree(dev); 5282 struct sysctl_oid_list *child = SYSCTL_CHILDREN(tree); 5283 struct e1000_hw_stats *stats = &adapter->stats; 5284 5285 struct sysctl_oid *stat_node, *queue_node, *int_node; 5286 struct sysctl_oid_list *stat_list, *queue_list, *int_list; 5287 5288#define QUEUE_NAME_LEN 32 5289 char namebuf[QUEUE_NAME_LEN]; 5290 5291 /* Driver Statistics */ 5292 SYSCTL_ADD_ULONG(ctx, child, OID_AUTO, "link_irq", 5293 CTLFLAG_RD, &adapter->link_irq, 5294 "Link MSIX IRQ Handled"); 5295 SYSCTL_ADD_ULONG(ctx, child, OID_AUTO, "mbuf_alloc_fail", 5296 CTLFLAG_RD, &adapter->mbuf_alloc_failed, 5297 "Std mbuf failed"); 5298 SYSCTL_ADD_ULONG(ctx, child, OID_AUTO, "cluster_alloc_fail", 5299 CTLFLAG_RD, &adapter->mbuf_cluster_failed, 5300 "Std mbuf cluster failed"); 5301 SYSCTL_ADD_ULONG(ctx, child, OID_AUTO, "dropped", 5302 CTLFLAG_RD, &adapter->dropped_pkts, 5303 "Driver dropped packets"); 5304 SYSCTL_ADD_ULONG(ctx, child, OID_AUTO, "tx_dma_fail", 5305 CTLFLAG_RD, &adapter->no_tx_dma_setup, 5306 "Driver tx dma failure in xmit"); 5307 SYSCTL_ADD_ULONG(ctx, child, OID_AUTO, "rx_overruns", 5308 CTLFLAG_RD, &adapter->rx_overruns, 5309 "RX overruns"); 5310 SYSCTL_ADD_ULONG(ctx, child, OID_AUTO, "watchdog_timeouts", 5311 CTLFLAG_RD, &adapter->watchdog_events, 5312 "Watchdog timeouts"); 5313 5314 SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "device_control", 5315 CTLTYPE_UINT | CTLFLAG_RD, adapter, E1000_CTRL, 5316 em_sysctl_reg_handler, "IU", 5317 "Device Control Register"); 5318 SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "rx_control", 5319 CTLTYPE_UINT | CTLFLAG_RD, adapter, E1000_RCTL, 5320 em_sysctl_reg_handler, "IU", 5321 "Receiver Control Register"); 5322 SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "fc_high_water", 5323 CTLFLAG_RD, &adapter->hw.fc.high_water, 0, 5324 "Flow Control High Watermark"); 5325 SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "fc_low_water", 5326 CTLFLAG_RD, &adapter->hw.fc.low_water, 0, 5327 "Flow Control Low Watermark"); 5328 5329 for (int i = 0; i < adapter->num_queues; i++, rxr++, txr++) { 5330 snprintf(namebuf, QUEUE_NAME_LEN, "queue%d", i); 5331 queue_node = SYSCTL_ADD_NODE(ctx, child, OID_AUTO, namebuf, 5332 CTLFLAG_RD, NULL, "Queue Name"); 5333 queue_list = SYSCTL_CHILDREN(queue_node); 5334 5335 SYSCTL_ADD_PROC(ctx, queue_list, OID_AUTO, "txd_head", 5336 CTLTYPE_UINT | CTLFLAG_RD, adapter, 5337 E1000_TDH(txr->me), 5338 em_sysctl_reg_handler, "IU", 5339 "Transmit Descriptor Head"); 5340 SYSCTL_ADD_PROC(ctx, queue_list, OID_AUTO, "txd_tail", 5341 CTLTYPE_UINT | CTLFLAG_RD, adapter, 5342 E1000_TDT(txr->me), 5343 em_sysctl_reg_handler, "IU", 5344 "Transmit Descriptor Tail"); 5345 SYSCTL_ADD_ULONG(ctx, queue_list, OID_AUTO, "tx_irq", 5346 CTLFLAG_RD, &txr->tx_irq, 5347 "Queue MSI-X Transmit Interrupts"); 5348 SYSCTL_ADD_ULONG(ctx, queue_list, OID_AUTO, "no_desc_avail", 5349 CTLFLAG_RD, &txr->no_desc_avail, 5350 "Queue No Descriptor Available"); 5351 5352 SYSCTL_ADD_PROC(ctx, queue_list, OID_AUTO, "rxd_head", 5353 CTLTYPE_UINT | CTLFLAG_RD, adapter, 5354 E1000_RDH(rxr->me), 5355 em_sysctl_reg_handler, "IU", 5356 "Receive Descriptor Head"); 5357 SYSCTL_ADD_PROC(ctx, queue_list, OID_AUTO, "rxd_tail", 5358 CTLTYPE_UINT | CTLFLAG_RD, adapter, 5359 E1000_RDT(rxr->me), 5360 em_sysctl_reg_handler, "IU", 5361 "Receive Descriptor Tail"); 5362 SYSCTL_ADD_ULONG(ctx, queue_list, OID_AUTO, "rx_irq", 5363 CTLFLAG_RD, &rxr->rx_irq, 5364 "Queue MSI-X Receive Interrupts"); 5365 } 5366 5367 /* MAC stats get their own sub node */ 5368 5369 stat_node = SYSCTL_ADD_NODE(ctx, child, OID_AUTO, "mac_stats", 5370 CTLFLAG_RD, NULL, "Statistics"); 5371 stat_list = SYSCTL_CHILDREN(stat_node); 5372 5373 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "excess_coll", 5374 CTLFLAG_RD, &stats->ecol, 5375 "Excessive collisions"); 5376 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "single_coll", 5377 CTLFLAG_RD, &stats->scc, 5378 "Single collisions"); 5379 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "multiple_coll", 5380 CTLFLAG_RD, &stats->mcc, 5381 "Multiple collisions"); 5382 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "late_coll", 5383 CTLFLAG_RD, &stats->latecol, 5384 "Late collisions"); 5385 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "collision_count", 5386 CTLFLAG_RD, &stats->colc, 5387 "Collision Count"); 5388 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "symbol_errors", 5389 CTLFLAG_RD, &adapter->stats.symerrs, 5390 "Symbol Errors"); 5391 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "sequence_errors", 5392 CTLFLAG_RD, &adapter->stats.sec, 5393 "Sequence Errors"); 5394 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "defer_count", 5395 CTLFLAG_RD, &adapter->stats.dc, 5396 "Defer Count"); 5397 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "missed_packets", 5398 CTLFLAG_RD, &adapter->stats.mpc, 5399 "Missed Packets"); 5400 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "recv_no_buff", 5401 CTLFLAG_RD, &adapter->stats.rnbc, 5402 "Receive No Buffers"); 5403 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "recv_undersize", 5404 CTLFLAG_RD, &adapter->stats.ruc, 5405 "Receive Undersize"); 5406 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "recv_fragmented", 5407 CTLFLAG_RD, &adapter->stats.rfc, 5408 "Fragmented Packets Received "); 5409 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "recv_oversize", 5410 CTLFLAG_RD, &adapter->stats.roc, 5411 "Oversized Packets Received"); 5412 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "recv_jabber", 5413 CTLFLAG_RD, &adapter->stats.rjc, 5414 "Recevied Jabber"); 5415 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "recv_errs", 5416 CTLFLAG_RD, &adapter->stats.rxerrc, 5417 "Receive Errors"); 5418 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "crc_errs", 5419 CTLFLAG_RD, &adapter->stats.crcerrs, 5420 "CRC errors"); 5421 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "alignment_errs", 5422 CTLFLAG_RD, &adapter->stats.algnerrc, 5423 "Alignment Errors"); 5424 /* On 82575 these are collision counts */ 5425 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "coll_ext_errs", 5426 CTLFLAG_RD, &adapter->stats.cexterr, 5427 "Collision/Carrier extension errors"); 5428 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "xon_recvd", 5429 CTLFLAG_RD, &adapter->stats.xonrxc, 5430 "XON Received"); 5431 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "xon_txd", 5432 CTLFLAG_RD, &adapter->stats.xontxc, 5433 "XON Transmitted"); 5434 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "xoff_recvd", 5435 CTLFLAG_RD, &adapter->stats.xoffrxc, 5436 "XOFF Received"); 5437 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "xoff_txd", 5438 CTLFLAG_RD, &adapter->stats.xofftxc, 5439 "XOFF Transmitted"); 5440 5441 /* Packet Reception Stats */ 5442 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "total_pkts_recvd", 5443 CTLFLAG_RD, &adapter->stats.tpr, 5444 "Total Packets Received "); 5445 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "good_pkts_recvd", 5446 CTLFLAG_RD, &adapter->stats.gprc, 5447 "Good Packets Received"); 5448 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "bcast_pkts_recvd", 5449 CTLFLAG_RD, &adapter->stats.bprc, 5450 "Broadcast Packets Received"); 5451 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "mcast_pkts_recvd", 5452 CTLFLAG_RD, &adapter->stats.mprc, 5453 "Multicast Packets Received"); 5454 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "rx_frames_64", 5455 CTLFLAG_RD, &adapter->stats.prc64, 5456 "64 byte frames received "); 5457 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "rx_frames_65_127", 5458 CTLFLAG_RD, &adapter->stats.prc127, 5459 "65-127 byte frames received"); 5460 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "rx_frames_128_255", 5461 CTLFLAG_RD, &adapter->stats.prc255, 5462 "128-255 byte frames received"); 5463 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "rx_frames_256_511", 5464 CTLFLAG_RD, &adapter->stats.prc511, 5465 "256-511 byte frames received"); 5466 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "rx_frames_512_1023", 5467 CTLFLAG_RD, &adapter->stats.prc1023, 5468 "512-1023 byte frames received"); 5469 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "rx_frames_1024_1522", 5470 CTLFLAG_RD, &adapter->stats.prc1522, 5471 "1023-1522 byte frames received"); 5472 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "good_octets_recvd", 5473 CTLFLAG_RD, &adapter->stats.gorc, 5474 "Good Octets Received"); 5475 5476 /* Packet Transmission Stats */ 5477 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "good_octets_txd", 5478 CTLFLAG_RD, &adapter->stats.gotc, 5479 "Good Octets Transmitted"); 5480 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "total_pkts_txd", 5481 CTLFLAG_RD, &adapter->stats.tpt, 5482 "Total Packets Transmitted"); 5483 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "good_pkts_txd", 5484 CTLFLAG_RD, &adapter->stats.gptc, 5485 "Good Packets Transmitted"); 5486 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "bcast_pkts_txd", 5487 CTLFLAG_RD, &adapter->stats.bptc, 5488 "Broadcast Packets Transmitted"); 5489 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "mcast_pkts_txd", 5490 CTLFLAG_RD, &adapter->stats.mptc, 5491 "Multicast Packets Transmitted"); 5492 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "tx_frames_64", 5493 CTLFLAG_RD, &adapter->stats.ptc64, 5494 "64 byte frames transmitted "); 5495 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "tx_frames_65_127", 5496 CTLFLAG_RD, &adapter->stats.ptc127, 5497 "65-127 byte frames transmitted"); 5498 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "tx_frames_128_255", 5499 CTLFLAG_RD, &adapter->stats.ptc255, 5500 "128-255 byte frames transmitted"); 5501 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "tx_frames_256_511", 5502 CTLFLAG_RD, &adapter->stats.ptc511, 5503 "256-511 byte frames transmitted"); 5504 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "tx_frames_512_1023", 5505 CTLFLAG_RD, &adapter->stats.ptc1023, 5506 "512-1023 byte frames transmitted"); 5507 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "tx_frames_1024_1522", 5508 CTLFLAG_RD, &adapter->stats.ptc1522, 5509 "1024-1522 byte frames transmitted"); 5510 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "tso_txd", 5511 CTLFLAG_RD, &adapter->stats.tsctc, 5512 "TSO Contexts Transmitted"); 5513 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "tso_ctx_fail", 5514 CTLFLAG_RD, &adapter->stats.tsctfc, 5515 "TSO Contexts Failed"); 5516 5517 5518 /* Interrupt Stats */ 5519 5520 int_node = SYSCTL_ADD_NODE(ctx, child, OID_AUTO, "interrupts", 5521 CTLFLAG_RD, NULL, "Interrupt Statistics"); 5522 int_list = SYSCTL_CHILDREN(int_node); 5523 5524 SYSCTL_ADD_UQUAD(ctx, int_list, OID_AUTO, "asserts", 5525 CTLFLAG_RD, &adapter->stats.iac, 5526 "Interrupt Assertion Count"); 5527 5528 SYSCTL_ADD_UQUAD(ctx, int_list, OID_AUTO, "rx_pkt_timer", 5529 CTLFLAG_RD, &adapter->stats.icrxptc, 5530 "Interrupt Cause Rx Pkt Timer Expire Count"); 5531 5532 SYSCTL_ADD_UQUAD(ctx, int_list, OID_AUTO, "rx_abs_timer", 5533 CTLFLAG_RD, &adapter->stats.icrxatc, 5534 "Interrupt Cause Rx Abs Timer Expire Count"); 5535 5536 SYSCTL_ADD_UQUAD(ctx, int_list, OID_AUTO, "tx_pkt_timer", 5537 CTLFLAG_RD, &adapter->stats.ictxptc, 5538 "Interrupt Cause Tx Pkt Timer Expire Count"); 5539 5540 SYSCTL_ADD_UQUAD(ctx, int_list, OID_AUTO, "tx_abs_timer", 5541 CTLFLAG_RD, &adapter->stats.ictxatc, 5542 "Interrupt Cause Tx Abs Timer Expire Count"); 5543 5544 SYSCTL_ADD_UQUAD(ctx, int_list, OID_AUTO, "tx_queue_empty", 5545 CTLFLAG_RD, &adapter->stats.ictxqec, 5546 "Interrupt Cause Tx Queue Empty Count"); 5547 5548 SYSCTL_ADD_UQUAD(ctx, int_list, OID_AUTO, "tx_queue_min_thresh", 5549 CTLFLAG_RD, &adapter->stats.ictxqmtc, 5550 "Interrupt Cause Tx Queue Min Thresh Count"); 5551 5552 SYSCTL_ADD_UQUAD(ctx, int_list, OID_AUTO, "rx_desc_min_thresh", 5553 CTLFLAG_RD, &adapter->stats.icrxdmtc, 5554 "Interrupt Cause Rx Desc Min Thresh Count"); 5555 5556 SYSCTL_ADD_UQUAD(ctx, int_list, OID_AUTO, "rx_overrun", 5557 CTLFLAG_RD, &adapter->stats.icrxoc, 5558 "Interrupt Cause Receiver Overrun Count"); 5559} 5560 5561/********************************************************************** 5562 * 5563 * This routine provides a way to dump out the adapter eeprom, 5564 * often a useful debug/service tool. This only dumps the first 5565 * 32 words, stuff that matters is in that extent. 5566 * 5567 **********************************************************************/ 5568static int 5569em_sysctl_nvm_info(SYSCTL_HANDLER_ARGS) 5570{ 5571 struct adapter *adapter = (struct adapter *)arg1; 5572 int error; 5573 int result; 5574 5575 result = -1; 5576 error = sysctl_handle_int(oidp, &result, 0, req); 5577 5578 if (error || !req->newptr) 5579 return (error); 5580 5581 /* 5582 * This value will cause a hex dump of the 5583 * first 32 16-bit words of the EEPROM to 5584 * the screen. 5585 */ 5586 if (result == 1) 5587 em_print_nvm_info(adapter); 5588 5589 return (error); 5590} 5591 5592static void 5593em_print_nvm_info(struct adapter *adapter) 5594{ 5595 u16 eeprom_data; 5596 int i, j, row = 0; 5597 5598 /* Its a bit crude, but it gets the job done */ 5599 printf("\nInterface EEPROM Dump:\n"); 5600 printf("Offset\n0x0000 "); 5601 for (i = 0, j = 0; i < 32; i++, j++) { 5602 if (j == 8) { /* Make the offset block */ 5603 j = 0; ++row; 5604 printf("\n0x00%x0 ",row); 5605 } 5606 e1000_read_nvm(&adapter->hw, i, 1, &eeprom_data); 5607 printf("%04x ", eeprom_data); 5608 } 5609 printf("\n"); 5610} 5611 5612static int 5613em_sysctl_int_delay(SYSCTL_HANDLER_ARGS) 5614{ 5615 struct em_int_delay_info *info; 5616 struct adapter *adapter; 5617 u32 regval; 5618 int error, usecs, ticks; 5619 5620 info = (struct em_int_delay_info *)arg1; 5621 usecs = info->value; 5622 error = sysctl_handle_int(oidp, &usecs, 0, req); 5623 if (error != 0 || req->newptr == NULL) 5624 return (error); 5625 if (usecs < 0 || usecs > EM_TICKS_TO_USECS(65535)) 5626 return (EINVAL); 5627 info->value = usecs; 5628 ticks = EM_USECS_TO_TICKS(usecs); 5629 if (info->offset == E1000_ITR) /* units are 256ns here */ 5630 ticks *= 4; 5631 5632 adapter = info->adapter; 5633 5634 EM_CORE_LOCK(adapter); 5635 regval = E1000_READ_OFFSET(&adapter->hw, info->offset); 5636 regval = (regval & ~0xffff) | (ticks & 0xffff); 5637 /* Handle a few special cases. */ 5638 switch (info->offset) { 5639 case E1000_RDTR: 5640 break; 5641 case E1000_TIDV: 5642 if (ticks == 0) { 5643 adapter->txd_cmd &= ~E1000_TXD_CMD_IDE; 5644 /* Don't write 0 into the TIDV register. */ 5645 regval++; 5646 } else 5647 adapter->txd_cmd |= E1000_TXD_CMD_IDE; 5648 break; 5649 } 5650 E1000_WRITE_OFFSET(&adapter->hw, info->offset, regval); 5651 EM_CORE_UNLOCK(adapter); 5652 return (0); 5653} 5654 5655static void 5656em_add_int_delay_sysctl(struct adapter *adapter, const char *name, 5657 const char *description, struct em_int_delay_info *info, 5658 int offset, int value) 5659{ 5660 info->adapter = adapter; 5661 info->offset = offset; 5662 info->value = value; 5663 SYSCTL_ADD_PROC(device_get_sysctl_ctx(adapter->dev), 5664 SYSCTL_CHILDREN(device_get_sysctl_tree(adapter->dev)), 5665 OID_AUTO, name, CTLTYPE_INT|CTLFLAG_RW, 5666 info, 0, em_sysctl_int_delay, "I", description); 5667} 5668 5669static void 5670em_set_sysctl_value(struct adapter *adapter, const char *name, 5671 const char *description, int *limit, int value) 5672{ 5673 *limit = value; 5674 SYSCTL_ADD_INT(device_get_sysctl_ctx(adapter->dev), 5675 SYSCTL_CHILDREN(device_get_sysctl_tree(adapter->dev)), 5676 OID_AUTO, name, CTLTYPE_INT|CTLFLAG_RW, limit, value, description); 5677} 5678 5679 5680/* 5681** Set flow control using sysctl: 5682** Flow control values: 5683** 0 - off 5684** 1 - rx pause 5685** 2 - tx pause 5686** 3 - full 5687*/ 5688static int 5689em_set_flowcntl(SYSCTL_HANDLER_ARGS) 5690{ 5691 int error; 5692 static int input = 3; /* default is full */ 5693 struct adapter *adapter = (struct adapter *) arg1; 5694 5695 error = sysctl_handle_int(oidp, &input, 0, req); 5696 5697 if ((error) || (req->newptr == NULL)) 5698 return (error); 5699 5700 if (input == adapter->fc) /* no change? */ 5701 return (error); 5702 5703 switch (input) { 5704 case e1000_fc_rx_pause: 5705 case e1000_fc_tx_pause: 5706 case e1000_fc_full: 5707 case e1000_fc_none: 5708 adapter->hw.fc.requested_mode = input; 5709 adapter->fc = input; 5710 break; 5711 default: 5712 /* Do nothing */ 5713 return (error); 5714 } 5715 5716 adapter->hw.fc.current_mode = adapter->hw.fc.requested_mode; 5717 e1000_force_mac_fc(&adapter->hw); 5718 return (error); 5719} 5720 5721/* 5722** Manage Energy Efficient Ethernet: 5723** Control values: 5724** 0/1 - enabled/disabled 5725*/ 5726static int 5727em_sysctl_eee(SYSCTL_HANDLER_ARGS) 5728{ 5729 struct adapter *adapter = (struct adapter *) arg1; 5730 int error, value; 5731 5732 value = adapter->hw.dev_spec.ich8lan.eee_disable; 5733 error = sysctl_handle_int(oidp, &value, 0, req); 5734 if (error || req->newptr == NULL) 5735 return (error); 5736 EM_CORE_LOCK(adapter); 5737 adapter->hw.dev_spec.ich8lan.eee_disable = (value != 0); 5738 em_init_locked(adapter); 5739 EM_CORE_UNLOCK(adapter); 5740 return (0); 5741} 5742 5743static int 5744em_sysctl_debug_info(SYSCTL_HANDLER_ARGS) 5745{ 5746 struct adapter *adapter; 5747 int error; 5748 int result; 5749 5750 result = -1; 5751 error = sysctl_handle_int(oidp, &result, 0, req); 5752 5753 if (error || !req->newptr) 5754 return (error); 5755 5756 if (result == 1) { 5757 adapter = (struct adapter *)arg1; 5758 em_print_debug_info(adapter); 5759 } 5760 5761 return (error); 5762} 5763 5764/* 5765** This routine is meant to be fluid, add whatever is 5766** needed for debugging a problem. -jfv 5767*/ 5768static void 5769em_print_debug_info(struct adapter *adapter) 5770{ 5771 device_t dev = adapter->dev; 5772 struct tx_ring *txr = adapter->tx_rings; 5773 struct rx_ring *rxr = adapter->rx_rings; 5774 5775 if (adapter->ifp->if_drv_flags & IFF_DRV_RUNNING) 5776 printf("Interface is RUNNING "); 5777 else 5778 printf("Interface is NOT RUNNING\n"); 5779 5780 if (adapter->ifp->if_drv_flags & IFF_DRV_OACTIVE) 5781 printf("and INACTIVE\n"); 5782 else 5783 printf("and ACTIVE\n"); 5784 5785 device_printf(dev, "hw tdh = %d, hw tdt = %d\n", 5786 E1000_READ_REG(&adapter->hw, E1000_TDH(0)), 5787 E1000_READ_REG(&adapter->hw, E1000_TDT(0))); 5788 device_printf(dev, "hw rdh = %d, hw rdt = %d\n", 5789 E1000_READ_REG(&adapter->hw, E1000_RDH(0)), 5790 E1000_READ_REG(&adapter->hw, E1000_RDT(0))); 5791 device_printf(dev, "Tx Queue Status = %d\n", txr->queue_status); 5792 device_printf(dev, "TX descriptors avail = %d\n", 5793 txr->tx_avail); 5794 device_printf(dev, "Tx Descriptors avail failure = %ld\n", 5795 txr->no_desc_avail); 5796 device_printf(dev, "RX discarded packets = %ld\n", 5797 rxr->rx_discarded); 5798 device_printf(dev, "RX Next to Check = %d\n", rxr->next_to_check); 5799 device_printf(dev, "RX Next to Refresh = %d\n", rxr->next_to_refresh); 5800} 5801