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 /*$FreeBSD$*/ 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_var.h> 67 #include <net/if_arp.h> 68 #include <net/if_dl.h> 69 #include <net/if_media.h> 70 71 #include <net/if_types.h> 72 #include <net/if_vlan_var.h> 73 74 #include <netinet/in_systm.h> 75 #include <netinet/in.h> 76 #include <netinet/if_ether.h> 77 #include <netinet/ip.h> 78 #include <netinet/ip6.h> 79 #include <netinet/tcp.h> 80 #include <netinet/udp.h> 81 82 #include <machine/in_cksum.h> 83 #include <dev/led/led.h> 84 #include <dev/pci/pcivar.h> 85 #include <dev/pci/pcireg.h> 86 87 #include "e1000_api.h" 88 #include "e1000_82571.h" 89 #include "if_em.h" 90 91 /********************************************************************* 92 * Set this to one to display debug statistics 93 *********************************************************************/ 94 int em_display_debug_stats = 0; 95 96 /********************************************************************* 97 * Driver version: 98 *********************************************************************/ 99 char em_driver_version[] = "7.3.8"; 100 101 /********************************************************************* 102 * PCI Device ID Table 103 * 104 * Used by probe to select devices to load on 105 * Last field stores an index into e1000_strings 106 * Last entry must be all 0s 107 * 108 * { Vendor ID, Device ID, SubVendor ID, SubDevice ID, String Index } 109 *********************************************************************/ 110 111 static em_vendor_info_t em_vendor_info_array[] = 112 { 113 /* Intel(R) PRO/1000 Network Connection */ 114 { 0x8086, E1000_DEV_ID_82571EB_COPPER, PCI_ANY_ID, PCI_ANY_ID, 0}, 115 { 0x8086, E1000_DEV_ID_82571EB_FIBER, PCI_ANY_ID, PCI_ANY_ID, 0}, 116 { 0x8086, E1000_DEV_ID_82571EB_SERDES, PCI_ANY_ID, PCI_ANY_ID, 0}, 117 { 0x8086, E1000_DEV_ID_82571EB_SERDES_DUAL, 118 PCI_ANY_ID, PCI_ANY_ID, 0}, 119 { 0x8086, E1000_DEV_ID_82571EB_SERDES_QUAD, 120 PCI_ANY_ID, PCI_ANY_ID, 0}, 121 { 0x8086, E1000_DEV_ID_82571EB_QUAD_COPPER, 122 PCI_ANY_ID, PCI_ANY_ID, 0}, 123 { 0x8086, E1000_DEV_ID_82571EB_QUAD_COPPER_LP, 124 PCI_ANY_ID, PCI_ANY_ID, 0}, 125 { 0x8086, E1000_DEV_ID_82571EB_QUAD_FIBER, 126 PCI_ANY_ID, PCI_ANY_ID, 0}, 127 { 0x8086, E1000_DEV_ID_82571PT_QUAD_COPPER, 128 PCI_ANY_ID, PCI_ANY_ID, 0}, 129 { 0x8086, E1000_DEV_ID_82572EI_COPPER, PCI_ANY_ID, PCI_ANY_ID, 0}, 130 { 0x8086, E1000_DEV_ID_82572EI_FIBER, PCI_ANY_ID, PCI_ANY_ID, 0}, 131 { 0x8086, E1000_DEV_ID_82572EI_SERDES, PCI_ANY_ID, PCI_ANY_ID, 0}, 132 { 0x8086, E1000_DEV_ID_82572EI, PCI_ANY_ID, PCI_ANY_ID, 0}, 133 134 { 0x8086, E1000_DEV_ID_82573E, PCI_ANY_ID, PCI_ANY_ID, 0}, 135 { 0x8086, E1000_DEV_ID_82573E_IAMT, PCI_ANY_ID, PCI_ANY_ID, 0}, 136 { 0x8086, E1000_DEV_ID_82573L, PCI_ANY_ID, PCI_ANY_ID, 0}, 137 { 0x8086, E1000_DEV_ID_82583V, PCI_ANY_ID, PCI_ANY_ID, 0}, 138 { 0x8086, E1000_DEV_ID_80003ES2LAN_COPPER_SPT, 139 PCI_ANY_ID, PCI_ANY_ID, 0}, 140 { 0x8086, E1000_DEV_ID_80003ES2LAN_SERDES_SPT, 141 PCI_ANY_ID, PCI_ANY_ID, 0}, 142 { 0x8086, E1000_DEV_ID_80003ES2LAN_COPPER_DPT, 143 PCI_ANY_ID, PCI_ANY_ID, 0}, 144 { 0x8086, E1000_DEV_ID_80003ES2LAN_SERDES_DPT, 145 PCI_ANY_ID, PCI_ANY_ID, 0}, 146 { 0x8086, E1000_DEV_ID_ICH8_IGP_M_AMT, PCI_ANY_ID, PCI_ANY_ID, 0}, 147 { 0x8086, E1000_DEV_ID_ICH8_IGP_AMT, PCI_ANY_ID, PCI_ANY_ID, 0}, 148 { 0x8086, E1000_DEV_ID_ICH8_IGP_C, PCI_ANY_ID, PCI_ANY_ID, 0}, 149 { 0x8086, E1000_DEV_ID_ICH8_IFE, PCI_ANY_ID, PCI_ANY_ID, 0}, 150 { 0x8086, E1000_DEV_ID_ICH8_IFE_GT, PCI_ANY_ID, PCI_ANY_ID, 0}, 151 { 0x8086, E1000_DEV_ID_ICH8_IFE_G, PCI_ANY_ID, PCI_ANY_ID, 0}, 152 { 0x8086, E1000_DEV_ID_ICH8_IGP_M, PCI_ANY_ID, PCI_ANY_ID, 0}, 153 { 0x8086, E1000_DEV_ID_ICH8_82567V_3, PCI_ANY_ID, PCI_ANY_ID, 0}, 154 { 0x8086, E1000_DEV_ID_ICH9_IGP_M_AMT, PCI_ANY_ID, PCI_ANY_ID, 0}, 155 { 0x8086, E1000_DEV_ID_ICH9_IGP_AMT, PCI_ANY_ID, PCI_ANY_ID, 0}, 156 { 0x8086, E1000_DEV_ID_ICH9_IGP_C, PCI_ANY_ID, PCI_ANY_ID, 0}, 157 { 0x8086, E1000_DEV_ID_ICH9_IGP_M, PCI_ANY_ID, PCI_ANY_ID, 0}, 158 { 0x8086, E1000_DEV_ID_ICH9_IGP_M_V, PCI_ANY_ID, PCI_ANY_ID, 0}, 159 { 0x8086, E1000_DEV_ID_ICH9_IFE, PCI_ANY_ID, PCI_ANY_ID, 0}, 160 { 0x8086, E1000_DEV_ID_ICH9_IFE_GT, PCI_ANY_ID, PCI_ANY_ID, 0}, 161 { 0x8086, E1000_DEV_ID_ICH9_IFE_G, PCI_ANY_ID, PCI_ANY_ID, 0}, 162 { 0x8086, E1000_DEV_ID_ICH9_BM, PCI_ANY_ID, PCI_ANY_ID, 0}, 163 { 0x8086, E1000_DEV_ID_82574L, PCI_ANY_ID, PCI_ANY_ID, 0}, 164 { 0x8086, E1000_DEV_ID_82574LA, PCI_ANY_ID, PCI_ANY_ID, 0}, 165 { 0x8086, E1000_DEV_ID_ICH10_R_BM_LM, PCI_ANY_ID, PCI_ANY_ID, 0}, 166 { 0x8086, E1000_DEV_ID_ICH10_R_BM_LF, PCI_ANY_ID, PCI_ANY_ID, 0}, 167 { 0x8086, E1000_DEV_ID_ICH10_R_BM_V, PCI_ANY_ID, PCI_ANY_ID, 0}, 168 { 0x8086, E1000_DEV_ID_ICH10_D_BM_LM, PCI_ANY_ID, PCI_ANY_ID, 0}, 169 { 0x8086, E1000_DEV_ID_ICH10_D_BM_LF, PCI_ANY_ID, PCI_ANY_ID, 0}, 170 { 0x8086, E1000_DEV_ID_ICH10_D_BM_V, PCI_ANY_ID, PCI_ANY_ID, 0}, 171 { 0x8086, E1000_DEV_ID_PCH_M_HV_LM, PCI_ANY_ID, PCI_ANY_ID, 0}, 172 { 0x8086, E1000_DEV_ID_PCH_M_HV_LC, PCI_ANY_ID, PCI_ANY_ID, 0}, 173 { 0x8086, E1000_DEV_ID_PCH_D_HV_DM, PCI_ANY_ID, PCI_ANY_ID, 0}, 174 { 0x8086, E1000_DEV_ID_PCH_D_HV_DC, PCI_ANY_ID, PCI_ANY_ID, 0}, 175 { 0x8086, E1000_DEV_ID_PCH2_LV_LM, PCI_ANY_ID, PCI_ANY_ID, 0}, 176 { 0x8086, E1000_DEV_ID_PCH2_LV_V, PCI_ANY_ID, PCI_ANY_ID, 0}, 177 { 0x8086, E1000_DEV_ID_PCH_LPT_I217_LM, PCI_ANY_ID, PCI_ANY_ID, 0}, 178 { 0x8086, E1000_DEV_ID_PCH_LPT_I217_V, PCI_ANY_ID, PCI_ANY_ID, 0}, 179 { 0x8086, E1000_DEV_ID_PCH_LPTLP_I218_LM, 180 PCI_ANY_ID, PCI_ANY_ID, 0}, 181 { 0x8086, E1000_DEV_ID_PCH_LPTLP_I218_V, 182 PCI_ANY_ID, PCI_ANY_ID, 0}, 183 /* required last entry */ 184 { 0, 0, 0, 0, 0} 185 }; 186 187 /********************************************************************* 188 * Table of branding strings for all supported NICs. 189 *********************************************************************/ 190 191 static char *em_strings[] = { 192 "Intel(R) PRO/1000 Network Connection" 193 }; 194 195 /********************************************************************* 196 * Function prototypes 197 *********************************************************************/ 198 static int em_probe(device_t); 199 static int em_attach(device_t); 200 static int em_detach(device_t); 201 static int em_shutdown(device_t); 202 static int em_suspend(device_t); 203 static int em_resume(device_t); 204 #ifdef EM_MULTIQUEUE 205 static int em_mq_start(struct ifnet *, struct mbuf *); 206 static int em_mq_start_locked(struct ifnet *, 207 struct tx_ring *, struct mbuf *); 208 static void em_qflush(struct ifnet *); 209 #else 210 static void em_start(struct ifnet *); 211 static void em_start_locked(struct ifnet *, struct tx_ring *); 212 #endif 213 static int em_ioctl(struct ifnet *, u_long, caddr_t); 214 static void em_init(void *); 215 static void em_init_locked(struct adapter *); 216 static void em_stop(void *); 217 static void em_media_status(struct ifnet *, struct ifmediareq *); 218 static int em_media_change(struct ifnet *); 219 static void em_identify_hardware(struct adapter *); 220 static int em_allocate_pci_resources(struct adapter *); 221 static int em_allocate_legacy(struct adapter *); 222 static int em_allocate_msix(struct adapter *); 223 static int em_allocate_queues(struct adapter *); 224 static int em_setup_msix(struct adapter *); 225 static void em_free_pci_resources(struct adapter *); 226 static void em_local_timer(void *); 227 static void em_reset(struct adapter *); 228 static int em_setup_interface(device_t, struct adapter *); 229 230 static void em_setup_transmit_structures(struct adapter *); 231 static void em_initialize_transmit_unit(struct adapter *); 232 static int em_allocate_transmit_buffers(struct tx_ring *); 233 static void em_free_transmit_structures(struct adapter *); 234 static void em_free_transmit_buffers(struct tx_ring *); 235 236 static int em_setup_receive_structures(struct adapter *); 237 static int em_allocate_receive_buffers(struct rx_ring *); 238 static void em_initialize_receive_unit(struct adapter *); 239 static void em_free_receive_structures(struct adapter *); 240 static void em_free_receive_buffers(struct rx_ring *); 241 242 static void em_enable_intr(struct adapter *); 243 static void em_disable_intr(struct adapter *); 244 static void em_update_stats_counters(struct adapter *); 245 static void em_add_hw_stats(struct adapter *adapter); 246 static void em_txeof(struct tx_ring *); 247 static bool em_rxeof(struct rx_ring *, int, int *); 248 #ifndef __NO_STRICT_ALIGNMENT 249 static int em_fixup_rx(struct rx_ring *); 250 #endif 251 static void em_receive_checksum(struct e1000_rx_desc *, struct mbuf *); 252 static void em_transmit_checksum_setup(struct tx_ring *, struct mbuf *, int, 253 struct ip *, u32 *, u32 *); 254 static void em_tso_setup(struct tx_ring *, struct mbuf *, int, struct ip *, 255 struct tcphdr *, u32 *, u32 *); 256 static void em_set_promisc(struct adapter *); 257 static void em_disable_promisc(struct adapter *); 258 static void em_set_multi(struct adapter *); 259 static void em_update_link_status(struct adapter *); 260 static void em_refresh_mbufs(struct rx_ring *, int); 261 static void em_register_vlan(void *, struct ifnet *, u16); 262 static void em_unregister_vlan(void *, struct ifnet *, u16); 263 static void em_setup_vlan_hw_support(struct adapter *); 264 static int em_xmit(struct tx_ring *, struct mbuf **); 265 static int em_dma_malloc(struct adapter *, bus_size_t, 266 struct em_dma_alloc *, int); 267 static void em_dma_free(struct adapter *, struct em_dma_alloc *); 268 static int em_sysctl_nvm_info(SYSCTL_HANDLER_ARGS); 269 static void em_print_nvm_info(struct adapter *); 270 static int em_sysctl_debug_info(SYSCTL_HANDLER_ARGS); 271 static void em_print_debug_info(struct adapter *); 272 static int em_is_valid_ether_addr(u8 *); 273 static int em_sysctl_int_delay(SYSCTL_HANDLER_ARGS); 274 static void em_add_int_delay_sysctl(struct adapter *, const char *, 275 const char *, struct em_int_delay_info *, int, int); 276 /* Management and WOL Support */ 277 static void em_init_manageability(struct adapter *); 278 static void em_release_manageability(struct adapter *); 279 static void em_get_hw_control(struct adapter *); 280 static void em_release_hw_control(struct adapter *); 281 static void em_get_wakeup(device_t); 282 static void em_enable_wakeup(device_t); 283 static int em_enable_phy_wakeup(struct adapter *); 284 static void em_led_func(void *, int); 285 static void em_disable_aspm(struct adapter *); 286 287 static int em_irq_fast(void *); 288 289 /* MSIX handlers */ 290 static void em_msix_tx(void *); 291 static void em_msix_rx(void *); 292 static void em_msix_link(void *); 293 static void em_handle_tx(void *context, int pending); 294 static void em_handle_rx(void *context, int pending); 295 static void em_handle_link(void *context, int pending); 296 297 static void em_set_sysctl_value(struct adapter *, const char *, 298 const char *, int *, int); 299 static int em_set_flowcntl(SYSCTL_HANDLER_ARGS); 300 static int em_sysctl_eee(SYSCTL_HANDLER_ARGS); 301 302 static __inline void em_rx_discard(struct rx_ring *, int); 303 304 #ifdef DEVICE_POLLING 305 static poll_handler_t em_poll; 306 #endif /* POLLING */ 307 308 /********************************************************************* 309 * FreeBSD Device Interface Entry Points 310 *********************************************************************/ 311 312 static device_method_t em_methods[] = { 313 /* Device interface */ 314 DEVMETHOD(device_probe, em_probe), 315 DEVMETHOD(device_attach, em_attach), 316 DEVMETHOD(device_detach, em_detach), 317 DEVMETHOD(device_shutdown, em_shutdown), 318 DEVMETHOD(device_suspend, em_suspend), 319 DEVMETHOD(device_resume, em_resume), 320 DEVMETHOD_END 321 }; 322 323 static driver_t em_driver = { 324 "em", em_methods, sizeof(struct adapter), 325 }; 326 327 devclass_t em_devclass; 328 DRIVER_MODULE(em, pci, em_driver, em_devclass, 0, 0); 329 MODULE_DEPEND(em, pci, 1, 1, 1); 330 MODULE_DEPEND(em, ether, 1, 1, 1); 331 332 /********************************************************************* 333 * Tunable default values. 334 *********************************************************************/ 335 336 #define EM_TICKS_TO_USECS(ticks) ((1024 * (ticks) + 500) / 1000) 337 #define EM_USECS_TO_TICKS(usecs) ((1000 * (usecs) + 512) / 1024) 338 #define M_TSO_LEN 66 339 340 #define MAX_INTS_PER_SEC 8000 341 #define DEFAULT_ITR (1000000000/(MAX_INTS_PER_SEC * 256)) 342 343 /* Allow common code without TSO */ 344 #ifndef CSUM_TSO 345 #define CSUM_TSO 0 346 #endif 347 348 static SYSCTL_NODE(_hw, OID_AUTO, em, CTLFLAG_RD, 0, "EM driver parameters"); 349 350 static int em_tx_int_delay_dflt = EM_TICKS_TO_USECS(EM_TIDV); 351 static int em_rx_int_delay_dflt = EM_TICKS_TO_USECS(EM_RDTR); 352 TUNABLE_INT("hw.em.tx_int_delay", &em_tx_int_delay_dflt); 353 TUNABLE_INT("hw.em.rx_int_delay", &em_rx_int_delay_dflt); 354 SYSCTL_INT(_hw_em, OID_AUTO, tx_int_delay, CTLFLAG_RDTUN, &em_tx_int_delay_dflt, 355 0, "Default transmit interrupt delay in usecs"); 356 SYSCTL_INT(_hw_em, OID_AUTO, rx_int_delay, CTLFLAG_RDTUN, &em_rx_int_delay_dflt, 357 0, "Default receive interrupt delay in usecs"); 358 359 static int em_tx_abs_int_delay_dflt = EM_TICKS_TO_USECS(EM_TADV); 360 static int em_rx_abs_int_delay_dflt = EM_TICKS_TO_USECS(EM_RADV); 361 TUNABLE_INT("hw.em.tx_abs_int_delay", &em_tx_abs_int_delay_dflt); 362 TUNABLE_INT("hw.em.rx_abs_int_delay", &em_rx_abs_int_delay_dflt); 363 SYSCTL_INT(_hw_em, OID_AUTO, tx_abs_int_delay, CTLFLAG_RDTUN, 364 &em_tx_abs_int_delay_dflt, 0, 365 "Default transmit interrupt delay limit in usecs"); 366 SYSCTL_INT(_hw_em, OID_AUTO, rx_abs_int_delay, CTLFLAG_RDTUN, 367 &em_rx_abs_int_delay_dflt, 0, 368 "Default receive interrupt delay limit in usecs"); 369 370 static int em_rxd = EM_DEFAULT_RXD; 371 static int em_txd = EM_DEFAULT_TXD; 372 TUNABLE_INT("hw.em.rxd", &em_rxd); 373 TUNABLE_INT("hw.em.txd", &em_txd); 374 SYSCTL_INT(_hw_em, OID_AUTO, rxd, CTLFLAG_RDTUN, &em_rxd, 0, 375 "Number of receive descriptors per queue"); 376 SYSCTL_INT(_hw_em, OID_AUTO, txd, CTLFLAG_RDTUN, &em_txd, 0, 377 "Number of transmit descriptors per queue"); 378 379 static int em_smart_pwr_down = FALSE; 380 TUNABLE_INT("hw.em.smart_pwr_down", &em_smart_pwr_down); 381 SYSCTL_INT(_hw_em, OID_AUTO, smart_pwr_down, CTLFLAG_RDTUN, &em_smart_pwr_down, 382 0, "Set to true to leave smart power down enabled on newer adapters"); 383 384 /* Controls whether promiscuous also shows bad packets */ 385 static int em_debug_sbp = FALSE; 386 TUNABLE_INT("hw.em.sbp", &em_debug_sbp); 387 SYSCTL_INT(_hw_em, OID_AUTO, sbp, CTLFLAG_RDTUN, &em_debug_sbp, 0, 388 "Show bad packets in promiscuous mode"); 389 390 static int em_enable_msix = TRUE; 391 TUNABLE_INT("hw.em.enable_msix", &em_enable_msix); 392 SYSCTL_INT(_hw_em, OID_AUTO, enable_msix, CTLFLAG_RDTUN, &em_enable_msix, 0, 393 "Enable MSI-X interrupts"); 394 395 /* How many packets rxeof tries to clean at a time */ 396 static int em_rx_process_limit = 100; 397 TUNABLE_INT("hw.em.rx_process_limit", &em_rx_process_limit); 398 SYSCTL_INT(_hw_em, OID_AUTO, rx_process_limit, CTLFLAG_RDTUN, 399 &em_rx_process_limit, 0, 400 "Maximum number of received packets to process " 401 "at a time, -1 means unlimited"); 402 403 /* Energy efficient ethernet - default to OFF */ 404 static int eee_setting = 1; 405 TUNABLE_INT("hw.em.eee_setting", &eee_setting); 406 SYSCTL_INT(_hw_em, OID_AUTO, eee_setting, CTLFLAG_RDTUN, &eee_setting, 0, 407 "Enable Energy Efficient Ethernet"); 408 409 /* Global used in WOL setup with multiport cards */ 410 static int global_quad_port_a = 0; 411 412 #ifdef DEV_NETMAP /* see ixgbe.c for details */ 413 #include <dev/netmap/if_em_netmap.h> 414 #endif /* DEV_NETMAP */ 415 416 /********************************************************************* 417 * Device identification routine 418 * 419 * em_probe determines if the driver should be loaded on 420 * adapter based on PCI vendor/device id of the adapter. 421 * 422 * return BUS_PROBE_DEFAULT on success, positive on failure 423 *********************************************************************/ 424 425 static int 426 em_probe(device_t dev) 427 { 428 char adapter_name[60]; 429 u16 pci_vendor_id = 0; 430 u16 pci_device_id = 0; 431 u16 pci_subvendor_id = 0; 432 u16 pci_subdevice_id = 0; 433 em_vendor_info_t *ent; 434 435 INIT_DEBUGOUT("em_probe: begin"); 436 437 pci_vendor_id = pci_get_vendor(dev); 438 if (pci_vendor_id != EM_VENDOR_ID) 439 return (ENXIO); 440 441 pci_device_id = pci_get_device(dev); 442 pci_subvendor_id = pci_get_subvendor(dev); 443 pci_subdevice_id = pci_get_subdevice(dev); 444 445 ent = em_vendor_info_array; 446 while (ent->vendor_id != 0) { 447 if ((pci_vendor_id == ent->vendor_id) && 448 (pci_device_id == ent->device_id) && 449 450 ((pci_subvendor_id == ent->subvendor_id) || 451 (ent->subvendor_id == PCI_ANY_ID)) && 452 453 ((pci_subdevice_id == ent->subdevice_id) || 454 (ent->subdevice_id == PCI_ANY_ID))) { 455 sprintf(adapter_name, "%s %s", 456 em_strings[ent->index], 457 em_driver_version); 458 device_set_desc_copy(dev, adapter_name); 459 return (BUS_PROBE_DEFAULT); 460 } 461 ent++; 462 } 463 464 return (ENXIO); 465 } 466 467 /********************************************************************* 468 * Device initialization routine 469 * 470 * The attach entry point is called when the driver is being loaded. 471 * This routine identifies the type of hardware, allocates all resources 472 * and initializes the hardware. 473 * 474 * return 0 on success, positive on failure 475 *********************************************************************/ 476 477 static int 478 em_attach(device_t dev) 479 { 480 struct adapter *adapter; 481 struct e1000_hw *hw; 482 int error = 0; 483 484 INIT_DEBUGOUT("em_attach: begin"); 485 486 if (resource_disabled("em", device_get_unit(dev))) { 487 device_printf(dev, "Disabled by device hint\n"); 488 return (ENXIO); 489 } 490 491 adapter = device_get_softc(dev); 492 adapter->dev = adapter->osdep.dev = dev; 493 hw = &adapter->hw; 494 EM_CORE_LOCK_INIT(adapter, device_get_nameunit(dev)); 495 496 /* SYSCTL stuff */ 497 SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev), 498 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), 499 OID_AUTO, "nvm", CTLTYPE_INT|CTLFLAG_RW, adapter, 0, 500 em_sysctl_nvm_info, "I", "NVM Information"); 501 502 SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev), 503 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), 504 OID_AUTO, "debug", CTLTYPE_INT|CTLFLAG_RW, adapter, 0, 505 em_sysctl_debug_info, "I", "Debug Information"); 506 507 SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev), 508 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), 509 OID_AUTO, "fc", CTLTYPE_INT|CTLFLAG_RW, adapter, 0, 510 em_set_flowcntl, "I", "Flow Control"); 511 512 callout_init_mtx(&adapter->timer, &adapter->core_mtx, 0); 513 514 /* Determine hardware and mac info */ 515 em_identify_hardware(adapter); 516 517 /* Setup PCI resources */ 518 if (em_allocate_pci_resources(adapter)) { 519 device_printf(dev, "Allocation of PCI resources failed\n"); 520 error = ENXIO; 521 goto err_pci; 522 } 523 524 /* 525 ** For ICH8 and family we need to 526 ** map the flash memory, and this 527 ** must happen after the MAC is 528 ** identified 529 */ 530 if ((hw->mac.type == e1000_ich8lan) || 531 (hw->mac.type == e1000_ich9lan) || 532 (hw->mac.type == e1000_ich10lan) || 533 (hw->mac.type == e1000_pchlan) || 534 (hw->mac.type == e1000_pch2lan) || 535 (hw->mac.type == e1000_pch_lpt)) { 536 int rid = EM_BAR_TYPE_FLASH; 537 adapter->flash = bus_alloc_resource_any(dev, 538 SYS_RES_MEMORY, &rid, RF_ACTIVE); 539 if (adapter->flash == NULL) { 540 device_printf(dev, "Mapping of Flash failed\n"); 541 error = ENXIO; 542 goto err_pci; 543 } 544 /* This is used in the shared code */ 545 hw->flash_address = (u8 *)adapter->flash; 546 adapter->osdep.flash_bus_space_tag = 547 rman_get_bustag(adapter->flash); 548 adapter->osdep.flash_bus_space_handle = 549 rman_get_bushandle(adapter->flash); 550 } 551 552 /* Do Shared Code initialization */ 553 if (e1000_setup_init_funcs(hw, TRUE)) { 554 device_printf(dev, "Setup of Shared code failed\n"); 555 error = ENXIO; 556 goto err_pci; 557 } 558 559 e1000_get_bus_info(hw); 560 561 /* Set up some sysctls for the tunable interrupt delays */ 562 em_add_int_delay_sysctl(adapter, "rx_int_delay", 563 "receive interrupt delay in usecs", &adapter->rx_int_delay, 564 E1000_REGISTER(hw, E1000_RDTR), em_rx_int_delay_dflt); 565 em_add_int_delay_sysctl(adapter, "tx_int_delay", 566 "transmit interrupt delay in usecs", &adapter->tx_int_delay, 567 E1000_REGISTER(hw, E1000_TIDV), em_tx_int_delay_dflt); 568 em_add_int_delay_sysctl(adapter, "rx_abs_int_delay", 569 "receive interrupt delay limit in usecs", 570 &adapter->rx_abs_int_delay, 571 E1000_REGISTER(hw, E1000_RADV), 572 em_rx_abs_int_delay_dflt); 573 em_add_int_delay_sysctl(adapter, "tx_abs_int_delay", 574 "transmit interrupt delay limit in usecs", 575 &adapter->tx_abs_int_delay, 576 E1000_REGISTER(hw, E1000_TADV), 577 em_tx_abs_int_delay_dflt); 578 em_add_int_delay_sysctl(adapter, "itr", 579 "interrupt delay limit in usecs/4", 580 &adapter->tx_itr, 581 E1000_REGISTER(hw, E1000_ITR), 582 DEFAULT_ITR); 583 584 /* Sysctl for limiting the amount of work done in the taskqueue */ 585 em_set_sysctl_value(adapter, "rx_processing_limit", 586 "max number of rx packets to process", &adapter->rx_process_limit, 587 em_rx_process_limit); 588 589 /* 590 * Validate number of transmit and receive descriptors. It 591 * must not exceed hardware maximum, and must be multiple 592 * of E1000_DBA_ALIGN. 593 */ 594 if (((em_txd * sizeof(struct e1000_tx_desc)) % EM_DBA_ALIGN) != 0 || 595 (em_txd > EM_MAX_TXD) || (em_txd < EM_MIN_TXD)) { 596 device_printf(dev, "Using %d TX descriptors instead of %d!\n", 597 EM_DEFAULT_TXD, em_txd); 598 adapter->num_tx_desc = EM_DEFAULT_TXD; 599 } else 600 adapter->num_tx_desc = em_txd; 601 602 if (((em_rxd * sizeof(struct e1000_rx_desc)) % EM_DBA_ALIGN) != 0 || 603 (em_rxd > EM_MAX_RXD) || (em_rxd < EM_MIN_RXD)) { 604 device_printf(dev, "Using %d RX descriptors instead of %d!\n", 605 EM_DEFAULT_RXD, em_rxd); 606 adapter->num_rx_desc = EM_DEFAULT_RXD; 607 } else 608 adapter->num_rx_desc = em_rxd; 609 610 hw->mac.autoneg = DO_AUTO_NEG; 611 hw->phy.autoneg_wait_to_complete = FALSE; 612 hw->phy.autoneg_advertised = AUTONEG_ADV_DEFAULT; 613 614 /* Copper options */ 615 if (hw->phy.media_type == e1000_media_type_copper) { 616 hw->phy.mdix = AUTO_ALL_MODES; 617 hw->phy.disable_polarity_correction = FALSE; 618 hw->phy.ms_type = EM_MASTER_SLAVE; 619 } 620 621 /* 622 * Set the frame limits assuming 623 * standard ethernet sized frames. 624 */ 625 adapter->hw.mac.max_frame_size = 626 ETHERMTU + ETHER_HDR_LEN + ETHERNET_FCS_SIZE; 627 628 /* 629 * This controls when hardware reports transmit completion 630 * status. 631 */ 632 hw->mac.report_tx_early = 1; 633 634 /* 635 ** Get queue/ring memory 636 */ 637 if (em_allocate_queues(adapter)) { 638 error = ENOMEM; 639 goto err_pci; 640 } 641 642 /* Allocate multicast array memory. */ 643 adapter->mta = malloc(sizeof(u8) * ETH_ADDR_LEN * 644 MAX_NUM_MULTICAST_ADDRESSES, M_DEVBUF, M_NOWAIT); 645 if (adapter->mta == NULL) { 646 device_printf(dev, "Can not allocate multicast setup array\n"); 647 error = ENOMEM; 648 goto err_late; 649 } 650 651 /* Check SOL/IDER usage */ 652 if (e1000_check_reset_block(hw)) 653 device_printf(dev, "PHY reset is blocked" 654 " due to SOL/IDER session.\n"); 655 656 /* Sysctl for setting Energy Efficient Ethernet */ 657 hw->dev_spec.ich8lan.eee_disable = eee_setting; 658 SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev), 659 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), 660 OID_AUTO, "eee_control", CTLTYPE_INT|CTLFLAG_RW, 661 adapter, 0, em_sysctl_eee, "I", 662 "Disable Energy Efficient Ethernet"); 663 664 /* 665 ** Start from a known state, this is 666 ** important in reading the nvm and 667 ** mac from that. 668 */ 669 e1000_reset_hw(hw); 670 671 672 /* Make sure we have a good EEPROM before we read from it */ 673 if (e1000_validate_nvm_checksum(hw) < 0) { 674 /* 675 ** Some PCI-E parts fail the first check due to 676 ** the link being in sleep state, call it again, 677 ** if it fails a second time its a real issue. 678 */ 679 if (e1000_validate_nvm_checksum(hw) < 0) { 680 device_printf(dev, 681 "The EEPROM Checksum Is Not Valid\n"); 682 error = EIO; 683 goto err_late; 684 } 685 } 686 687 /* Copy the permanent MAC address out of the EEPROM */ 688 if (e1000_read_mac_addr(hw) < 0) { 689 device_printf(dev, "EEPROM read error while reading MAC" 690 " address\n"); 691 error = EIO; 692 goto err_late; 693 } 694 695 if (!em_is_valid_ether_addr(hw->mac.addr)) { 696 device_printf(dev, "Invalid MAC address\n"); 697 error = EIO; 698 goto err_late; 699 } 700 701 /* 702 ** Do interrupt configuration 703 */ 704 if (adapter->msix > 1) /* Do MSIX */ 705 error = em_allocate_msix(adapter); 706 else /* MSI or Legacy */ 707 error = em_allocate_legacy(adapter); 708 if (error) 709 goto err_late; 710 711 /* 712 * Get Wake-on-Lan and Management info for later use 713 */ 714 em_get_wakeup(dev); 715 716 /* Setup OS specific network interface */ 717 if (em_setup_interface(dev, adapter) != 0) 718 goto err_late; 719 720 em_reset(adapter); 721 722 /* Initialize statistics */ 723 em_update_stats_counters(adapter); 724 725 hw->mac.get_link_status = 1; 726 em_update_link_status(adapter); 727 728 /* Register for VLAN events */ 729 adapter->vlan_attach = EVENTHANDLER_REGISTER(vlan_config, 730 em_register_vlan, adapter, EVENTHANDLER_PRI_FIRST); 731 adapter->vlan_detach = EVENTHANDLER_REGISTER(vlan_unconfig, 732 em_unregister_vlan, adapter, EVENTHANDLER_PRI_FIRST); 733 734 em_add_hw_stats(adapter); 735 736 /* Non-AMT based hardware can now take control from firmware */ 737 if (adapter->has_manage && !adapter->has_amt) 738 em_get_hw_control(adapter); 739 740 /* Tell the stack that the interface is not active */ 741 adapter->ifp->if_drv_flags &= ~IFF_DRV_RUNNING; 742 adapter->ifp->if_drv_flags |= IFF_DRV_OACTIVE; 743 744 adapter->led_dev = led_create(em_led_func, adapter, 745 device_get_nameunit(dev)); 746 #ifdef DEV_NETMAP 747 em_netmap_attach(adapter); 748 #endif /* DEV_NETMAP */ 749 750 INIT_DEBUGOUT("em_attach: end"); 751 752 return (0); 753 754 err_late: 755 em_free_transmit_structures(adapter); 756 em_free_receive_structures(adapter); 757 em_release_hw_control(adapter); 758 if (adapter->ifp != NULL) 759 if_free(adapter->ifp); 760 err_pci: 761 em_free_pci_resources(adapter); 762 free(adapter->mta, M_DEVBUF); 763 EM_CORE_LOCK_DESTROY(adapter); 764 765 return (error); 766 } 767 768 /********************************************************************* 769 * Device removal routine 770 * 771 * The detach entry point is called when the driver is being removed. 772 * This routine stops the adapter and deallocates all the resources 773 * that were allocated for driver operation. 774 * 775 * return 0 on success, positive on failure 776 *********************************************************************/ 777 778 static int 779 em_detach(device_t dev) 780 { 781 struct adapter *adapter = device_get_softc(dev); 782 struct ifnet *ifp = adapter->ifp; 783 784 INIT_DEBUGOUT("em_detach: begin"); 785 786 /* Make sure VLANS are not using driver */ 787 if (adapter->ifp->if_vlantrunk != NULL) { 788 device_printf(dev,"Vlan in use, detach first\n"); 789 return (EBUSY); 790 } 791 792 #ifdef DEVICE_POLLING 793 if (ifp->if_capenable & IFCAP_POLLING) 794 ether_poll_deregister(ifp); 795 #endif 796 797 if (adapter->led_dev != NULL) 798 led_destroy(adapter->led_dev); 799 800 EM_CORE_LOCK(adapter); 801 adapter->in_detach = 1; 802 em_stop(adapter); 803 EM_CORE_UNLOCK(adapter); 804 EM_CORE_LOCK_DESTROY(adapter); 805 806 e1000_phy_hw_reset(&adapter->hw); 807 808 em_release_manageability(adapter); 809 em_release_hw_control(adapter); 810 811 /* Unregister VLAN events */ 812 if (adapter->vlan_attach != NULL) 813 EVENTHANDLER_DEREGISTER(vlan_config, adapter->vlan_attach); 814 if (adapter->vlan_detach != NULL) 815 EVENTHANDLER_DEREGISTER(vlan_unconfig, adapter->vlan_detach); 816 817 ether_ifdetach(adapter->ifp); 818 callout_drain(&adapter->timer); 819 820 #ifdef DEV_NETMAP 821 netmap_detach(ifp); 822 #endif /* DEV_NETMAP */ 823 824 em_free_pci_resources(adapter); 825 bus_generic_detach(dev); 826 if_free(ifp); 827 828 em_free_transmit_structures(adapter); 829 em_free_receive_structures(adapter); 830 831 em_release_hw_control(adapter); 832 free(adapter->mta, M_DEVBUF); 833 834 return (0); 835 } 836 837 /********************************************************************* 838 * 839 * Shutdown entry point 840 * 841 **********************************************************************/ 842 843 static int 844 em_shutdown(device_t dev) 845 { 846 return em_suspend(dev); 847 } 848 849 /* 850 * Suspend/resume device methods. 851 */ 852 static int 853 em_suspend(device_t dev) 854 { 855 struct adapter *adapter = device_get_softc(dev); 856 857 EM_CORE_LOCK(adapter); 858 859 em_release_manageability(adapter); 860 em_release_hw_control(adapter); 861 em_enable_wakeup(dev); 862 863 EM_CORE_UNLOCK(adapter); 864 865 return bus_generic_suspend(dev); 866 } 867 868 static int 869 em_resume(device_t dev) 870 { 871 struct adapter *adapter = device_get_softc(dev); 872 struct tx_ring *txr = adapter->tx_rings; 873 struct ifnet *ifp = adapter->ifp; 874 875 EM_CORE_LOCK(adapter); 876 if (adapter->hw.mac.type == e1000_pch2lan) 877 e1000_resume_workarounds_pchlan(&adapter->hw); 878 em_init_locked(adapter); 879 em_init_manageability(adapter); 880 881 if ((ifp->if_flags & IFF_UP) && 882 (ifp->if_drv_flags & IFF_DRV_RUNNING) && adapter->link_active) { 883 for (int i = 0; i < adapter->num_queues; i++, txr++) { 884 EM_TX_LOCK(txr); 885 #ifdef EM_MULTIQUEUE 886 if (!drbr_empty(ifp, txr->br)) 887 em_mq_start_locked(ifp, txr, NULL); 888 #else 889 if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd)) 890 em_start_locked(ifp, txr); 891 #endif 892 EM_TX_UNLOCK(txr); 893 } 894 } 895 EM_CORE_UNLOCK(adapter); 896 897 return bus_generic_resume(dev); 898 } 899 900 901 #ifdef EM_MULTIQUEUE 902 /********************************************************************* 903 * Multiqueue Transmit routines 904 * 905 * em_mq_start is called by the stack to initiate a transmit. 906 * however, if busy the driver can queue the request rather 907 * than do an immediate send. It is this that is an advantage 908 * in this driver, rather than also having multiple tx queues. 909 **********************************************************************/ 910 static int 911 em_mq_start_locked(struct ifnet *ifp, struct tx_ring *txr, struct mbuf *m) 912 { 913 struct adapter *adapter = txr->adapter; 914 struct mbuf *next; 915 int err = 0, enq = 0; 916 917 if ((ifp->if_drv_flags & (IFF_DRV_RUNNING | IFF_DRV_OACTIVE)) != 918 IFF_DRV_RUNNING || adapter->link_active == 0) { 919 if (m != NULL) 920 err = drbr_enqueue(ifp, txr->br, m); 921 return (err); 922 } 923 924 enq = 0; 925 if (m != NULL) { 926 err = drbr_enqueue(ifp, txr->br, m); 927 if (err) 928 return (err); 929 } 930 931 /* Process the queue */ 932 while ((next = drbr_peek(ifp, txr->br)) != NULL) { 933 if ((err = em_xmit(txr, &next)) != 0) { 934 if (next == NULL) 935 drbr_advance(ifp, txr->br); 936 else 937 drbr_putback(ifp, txr->br, next); 938 break; 939 } 940 drbr_advance(ifp, txr->br); 941 enq++; 942 ifp->if_obytes += next->m_pkthdr.len; 943 if (next->m_flags & M_MCAST) 944 ifp->if_omcasts++; 945 ETHER_BPF_MTAP(ifp, next); 946 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) 947 break; 948 } 949 950 if (enq > 0) { 951 /* Set the watchdog */ 952 txr->queue_status = EM_QUEUE_WORKING; 953 txr->watchdog_time = ticks; 954 } 955 956 if (txr->tx_avail < EM_MAX_SCATTER) 957 em_txeof(txr); 958 if (txr->tx_avail < EM_MAX_SCATTER) 959 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 960 return (err); 961 } 962 963 /* 964 ** Multiqueue capable stack interface 965 */ 966 static int 967 em_mq_start(struct ifnet *ifp, struct mbuf *m) 968 { 969 struct adapter *adapter = ifp->if_softc; 970 struct tx_ring *txr = adapter->tx_rings; 971 int error; 972 973 if (EM_TX_TRYLOCK(txr)) { 974 error = em_mq_start_locked(ifp, txr, m); 975 EM_TX_UNLOCK(txr); 976 } else 977 error = drbr_enqueue(ifp, txr->br, m); 978 979 return (error); 980 } 981 982 /* 983 ** Flush all ring buffers 984 */ 985 static void 986 em_qflush(struct ifnet *ifp) 987 { 988 struct adapter *adapter = ifp->if_softc; 989 struct tx_ring *txr = adapter->tx_rings; 990 struct mbuf *m; 991 992 for (int i = 0; i < adapter->num_queues; i++, txr++) { 993 EM_TX_LOCK(txr); 994 while ((m = buf_ring_dequeue_sc(txr->br)) != NULL) 995 m_freem(m); 996 EM_TX_UNLOCK(txr); 997 } 998 if_qflush(ifp); 999 } 1000 #else /* !EM_MULTIQUEUE */ 1001 1002 static void 1003 em_start_locked(struct ifnet *ifp, struct tx_ring *txr) 1004 { 1005 struct adapter *adapter = ifp->if_softc; 1006 struct mbuf *m_head; 1007 1008 EM_TX_LOCK_ASSERT(txr); 1009 1010 if ((ifp->if_drv_flags & (IFF_DRV_RUNNING|IFF_DRV_OACTIVE)) != 1011 IFF_DRV_RUNNING) 1012 return; 1013 1014 if (!adapter->link_active) 1015 return; 1016 1017 while (!IFQ_DRV_IS_EMPTY(&ifp->if_snd)) { 1018 /* Call cleanup if number of TX descriptors low */ 1019 if (txr->tx_avail <= EM_TX_CLEANUP_THRESHOLD) 1020 em_txeof(txr); 1021 if (txr->tx_avail < EM_MAX_SCATTER) { 1022 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 1023 break; 1024 } 1025 IFQ_DRV_DEQUEUE(&ifp->if_snd, m_head); 1026 if (m_head == NULL) 1027 break; 1028 /* 1029 * Encapsulation can modify our pointer, and or make it 1030 * NULL on failure. In that event, we can't requeue. 1031 */ 1032 if (em_xmit(txr, &m_head)) { 1033 if (m_head == NULL) 1034 break; 1035 IFQ_DRV_PREPEND(&ifp->if_snd, m_head); 1036 break; 1037 } 1038 1039 /* Send a copy of the frame to the BPF listener */ 1040 ETHER_BPF_MTAP(ifp, m_head); 1041 1042 /* Set timeout in case hardware has problems transmitting. */ 1043 txr->watchdog_time = ticks; 1044 txr->queue_status = EM_QUEUE_WORKING; 1045 } 1046 1047 return; 1048 } 1049 1050 static void 1051 em_start(struct ifnet *ifp) 1052 { 1053 struct adapter *adapter = ifp->if_softc; 1054 struct tx_ring *txr = adapter->tx_rings; 1055 1056 if (ifp->if_drv_flags & IFF_DRV_RUNNING) { 1057 EM_TX_LOCK(txr); 1058 em_start_locked(ifp, txr); 1059 EM_TX_UNLOCK(txr); 1060 } 1061 return; 1062 } 1063 #endif /* EM_MULTIQUEUE */ 1064 1065 /********************************************************************* 1066 * Ioctl entry point 1067 * 1068 * em_ioctl is called when the user wants to configure the 1069 * interface. 1070 * 1071 * return 0 on success, positive on failure 1072 **********************************************************************/ 1073 1074 static int 1075 em_ioctl(struct ifnet *ifp, u_long command, caddr_t data) 1076 { 1077 struct adapter *adapter = ifp->if_softc; 1078 struct ifreq *ifr = (struct ifreq *)data; 1079 #if defined(INET) || defined(INET6) 1080 struct ifaddr *ifa = (struct ifaddr *)data; 1081 #endif 1082 bool avoid_reset = FALSE; 1083 int error = 0; 1084 1085 if (adapter->in_detach) 1086 return (error); 1087 1088 switch (command) { 1089 case SIOCSIFADDR: 1090 #ifdef INET 1091 if (ifa->ifa_addr->sa_family == AF_INET) 1092 avoid_reset = TRUE; 1093 #endif 1094 #ifdef INET6 1095 if (ifa->ifa_addr->sa_family == AF_INET6) 1096 avoid_reset = TRUE; 1097 #endif 1098 /* 1099 ** Calling init results in link renegotiation, 1100 ** so we avoid doing it when possible. 1101 */ 1102 if (avoid_reset) { 1103 ifp->if_flags |= IFF_UP; 1104 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) 1105 em_init(adapter); 1106 #ifdef INET 1107 if (!(ifp->if_flags & IFF_NOARP)) 1108 arp_ifinit(ifp, ifa); 1109 #endif 1110 } else 1111 error = ether_ioctl(ifp, command, data); 1112 break; 1113 case SIOCSIFMTU: 1114 { 1115 int max_frame_size; 1116 1117 IOCTL_DEBUGOUT("ioctl rcv'd: SIOCSIFMTU (Set Interface MTU)"); 1118 1119 EM_CORE_LOCK(adapter); 1120 switch (adapter->hw.mac.type) { 1121 case e1000_82571: 1122 case e1000_82572: 1123 case e1000_ich9lan: 1124 case e1000_ich10lan: 1125 case e1000_pch2lan: 1126 case e1000_pch_lpt: 1127 case e1000_82574: 1128 case e1000_82583: 1129 case e1000_80003es2lan: /* 9K Jumbo Frame size */ 1130 max_frame_size = 9234; 1131 break; 1132 case e1000_pchlan: 1133 max_frame_size = 4096; 1134 break; 1135 /* Adapters that do not support jumbo frames */ 1136 case e1000_ich8lan: 1137 max_frame_size = ETHER_MAX_LEN; 1138 break; 1139 default: 1140 max_frame_size = MAX_JUMBO_FRAME_SIZE; 1141 } 1142 if (ifr->ifr_mtu > max_frame_size - ETHER_HDR_LEN - 1143 ETHER_CRC_LEN) { 1144 EM_CORE_UNLOCK(adapter); 1145 error = EINVAL; 1146 break; 1147 } 1148 1149 ifp->if_mtu = ifr->ifr_mtu; 1150 adapter->hw.mac.max_frame_size = 1151 ifp->if_mtu + ETHER_HDR_LEN + ETHER_CRC_LEN; 1152 em_init_locked(adapter); 1153 EM_CORE_UNLOCK(adapter); 1154 break; 1155 } 1156 case SIOCSIFFLAGS: 1157 IOCTL_DEBUGOUT("ioctl rcv'd:\ 1158 SIOCSIFFLAGS (Set Interface Flags)"); 1159 EM_CORE_LOCK(adapter); 1160 if (ifp->if_flags & IFF_UP) { 1161 if ((ifp->if_drv_flags & IFF_DRV_RUNNING)) { 1162 if ((ifp->if_flags ^ adapter->if_flags) & 1163 (IFF_PROMISC | IFF_ALLMULTI)) { 1164 em_disable_promisc(adapter); 1165 em_set_promisc(adapter); 1166 } 1167 } else 1168 em_init_locked(adapter); 1169 } else 1170 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 1171 em_stop(adapter); 1172 adapter->if_flags = ifp->if_flags; 1173 EM_CORE_UNLOCK(adapter); 1174 break; 1175 case SIOCADDMULTI: 1176 case SIOCDELMULTI: 1177 IOCTL_DEBUGOUT("ioctl rcv'd: SIOC(ADD|DEL)MULTI"); 1178 if (ifp->if_drv_flags & IFF_DRV_RUNNING) { 1179 EM_CORE_LOCK(adapter); 1180 em_disable_intr(adapter); 1181 em_set_multi(adapter); 1182 #ifdef DEVICE_POLLING 1183 if (!(ifp->if_capenable & IFCAP_POLLING)) 1184 #endif 1185 em_enable_intr(adapter); 1186 EM_CORE_UNLOCK(adapter); 1187 } 1188 break; 1189 case SIOCSIFMEDIA: 1190 /* Check SOL/IDER usage */ 1191 EM_CORE_LOCK(adapter); 1192 if (e1000_check_reset_block(&adapter->hw)) { 1193 EM_CORE_UNLOCK(adapter); 1194 device_printf(adapter->dev, "Media change is" 1195 " blocked due to SOL/IDER session.\n"); 1196 break; 1197 } 1198 EM_CORE_UNLOCK(adapter); 1199 /* falls thru */ 1200 case SIOCGIFMEDIA: 1201 IOCTL_DEBUGOUT("ioctl rcv'd: \ 1202 SIOCxIFMEDIA (Get/Set Interface Media)"); 1203 error = ifmedia_ioctl(ifp, ifr, &adapter->media, command); 1204 break; 1205 case SIOCSIFCAP: 1206 { 1207 int mask, reinit; 1208 1209 IOCTL_DEBUGOUT("ioctl rcv'd: SIOCSIFCAP (Set Capabilities)"); 1210 reinit = 0; 1211 mask = ifr->ifr_reqcap ^ ifp->if_capenable; 1212 #ifdef DEVICE_POLLING 1213 if (mask & IFCAP_POLLING) { 1214 if (ifr->ifr_reqcap & IFCAP_POLLING) { 1215 error = ether_poll_register(em_poll, ifp); 1216 if (error) 1217 return (error); 1218 EM_CORE_LOCK(adapter); 1219 em_disable_intr(adapter); 1220 ifp->if_capenable |= IFCAP_POLLING; 1221 EM_CORE_UNLOCK(adapter); 1222 } else { 1223 error = ether_poll_deregister(ifp); 1224 /* Enable interrupt even in error case */ 1225 EM_CORE_LOCK(adapter); 1226 em_enable_intr(adapter); 1227 ifp->if_capenable &= ~IFCAP_POLLING; 1228 EM_CORE_UNLOCK(adapter); 1229 } 1230 } 1231 #endif 1232 if (mask & IFCAP_HWCSUM) { 1233 ifp->if_capenable ^= IFCAP_HWCSUM; 1234 reinit = 1; 1235 } 1236 if (mask & IFCAP_TSO4) { 1237 ifp->if_capenable ^= IFCAP_TSO4; 1238 reinit = 1; 1239 } 1240 if (mask & IFCAP_VLAN_HWTAGGING) { 1241 ifp->if_capenable ^= IFCAP_VLAN_HWTAGGING; 1242 reinit = 1; 1243 } 1244 if (mask & IFCAP_VLAN_HWFILTER) { 1245 ifp->if_capenable ^= IFCAP_VLAN_HWFILTER; 1246 reinit = 1; 1247 } 1248 if (mask & IFCAP_VLAN_HWTSO) { 1249 ifp->if_capenable ^= IFCAP_VLAN_HWTSO; 1250 reinit = 1; 1251 } 1252 if ((mask & IFCAP_WOL) && 1253 (ifp->if_capabilities & IFCAP_WOL) != 0) { 1254 if (mask & IFCAP_WOL_MCAST) 1255 ifp->if_capenable ^= IFCAP_WOL_MCAST; 1256 if (mask & IFCAP_WOL_MAGIC) 1257 ifp->if_capenable ^= IFCAP_WOL_MAGIC; 1258 } 1259 if (reinit && (ifp->if_drv_flags & IFF_DRV_RUNNING)) 1260 em_init(adapter); 1261 VLAN_CAPABILITIES(ifp); 1262 break; 1263 } 1264 1265 default: 1266 error = ether_ioctl(ifp, command, data); 1267 break; 1268 } 1269 1270 return (error); 1271 } 1272 1273 1274 /********************************************************************* 1275 * Init entry point 1276 * 1277 * This routine is used in two ways. It is used by the stack as 1278 * init entry point in network interface structure. It is also used 1279 * by the driver as a hw/sw initialization routine to get to a 1280 * consistent state. 1281 * 1282 * return 0 on success, positive on failure 1283 **********************************************************************/ 1284 1285 static void 1286 em_init_locked(struct adapter *adapter) 1287 { 1288 struct ifnet *ifp = adapter->ifp; 1289 device_t dev = adapter->dev; 1290 1291 INIT_DEBUGOUT("em_init: begin"); 1292 1293 EM_CORE_LOCK_ASSERT(adapter); 1294 1295 em_disable_intr(adapter); 1296 callout_stop(&adapter->timer); 1297 1298 /* Get the latest mac address, User can use a LAA */ 1299 bcopy(IF_LLADDR(adapter->ifp), adapter->hw.mac.addr, 1300 ETHER_ADDR_LEN); 1301 1302 /* Put the address into the Receive Address Array */ 1303 e1000_rar_set(&adapter->hw, adapter->hw.mac.addr, 0); 1304 1305 /* 1306 * With the 82571 adapter, RAR[0] may be overwritten 1307 * when the other port is reset, we make a duplicate 1308 * in RAR[14] for that eventuality, this assures 1309 * the interface continues to function. 1310 */ 1311 if (adapter->hw.mac.type == e1000_82571) { 1312 e1000_set_laa_state_82571(&adapter->hw, TRUE); 1313 e1000_rar_set(&adapter->hw, adapter->hw.mac.addr, 1314 E1000_RAR_ENTRIES - 1); 1315 } 1316 1317 /* Initialize the hardware */ 1318 em_reset(adapter); 1319 em_update_link_status(adapter); 1320 1321 /* Setup VLAN support, basic and offload if available */ 1322 E1000_WRITE_REG(&adapter->hw, E1000_VET, ETHERTYPE_VLAN); 1323 1324 /* Set hardware offload abilities */ 1325 ifp->if_hwassist = 0; 1326 if (ifp->if_capenable & IFCAP_TXCSUM) 1327 ifp->if_hwassist |= (CSUM_TCP | CSUM_UDP); 1328 if (ifp->if_capenable & IFCAP_TSO4) 1329 ifp->if_hwassist |= CSUM_TSO; 1330 1331 /* Configure for OS presence */ 1332 em_init_manageability(adapter); 1333 1334 /* Prepare transmit descriptors and buffers */ 1335 em_setup_transmit_structures(adapter); 1336 em_initialize_transmit_unit(adapter); 1337 1338 /* Setup Multicast table */ 1339 em_set_multi(adapter); 1340 1341 /* 1342 ** Figure out the desired mbuf 1343 ** pool for doing jumbos 1344 */ 1345 if (adapter->hw.mac.max_frame_size <= 2048) 1346 adapter->rx_mbuf_sz = MCLBYTES; 1347 else if (adapter->hw.mac.max_frame_size <= 4096) 1348 adapter->rx_mbuf_sz = MJUMPAGESIZE; 1349 else 1350 adapter->rx_mbuf_sz = MJUM9BYTES; 1351 1352 /* Prepare receive descriptors and buffers */ 1353 if (em_setup_receive_structures(adapter)) { 1354 device_printf(dev, "Could not setup receive structures\n"); 1355 em_stop(adapter); 1356 return; 1357 } 1358 em_initialize_receive_unit(adapter); 1359 1360 /* Use real VLAN Filter support? */ 1361 if (ifp->if_capenable & IFCAP_VLAN_HWTAGGING) { 1362 if (ifp->if_capenable & IFCAP_VLAN_HWFILTER) 1363 /* Use real VLAN Filter support */ 1364 em_setup_vlan_hw_support(adapter); 1365 else { 1366 u32 ctrl; 1367 ctrl = E1000_READ_REG(&adapter->hw, E1000_CTRL); 1368 ctrl |= E1000_CTRL_VME; 1369 E1000_WRITE_REG(&adapter->hw, E1000_CTRL, ctrl); 1370 } 1371 } 1372 1373 /* Don't lose promiscuous settings */ 1374 em_set_promisc(adapter); 1375 1376 /* Set the interface as ACTIVE */ 1377 ifp->if_drv_flags |= IFF_DRV_RUNNING; 1378 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 1379 1380 callout_reset(&adapter->timer, hz, em_local_timer, adapter); 1381 e1000_clear_hw_cntrs_base_generic(&adapter->hw); 1382 1383 /* MSI/X configuration for 82574 */ 1384 if (adapter->hw.mac.type == e1000_82574) { 1385 int tmp; 1386 tmp = E1000_READ_REG(&adapter->hw, E1000_CTRL_EXT); 1387 tmp |= E1000_CTRL_EXT_PBA_CLR; 1388 E1000_WRITE_REG(&adapter->hw, E1000_CTRL_EXT, tmp); 1389 /* Set the IVAR - interrupt vector routing. */ 1390 E1000_WRITE_REG(&adapter->hw, E1000_IVAR, adapter->ivars); 1391 } 1392 1393 #ifdef DEVICE_POLLING 1394 /* 1395 * Only enable interrupts if we are not polling, make sure 1396 * they are off otherwise. 1397 */ 1398 if (ifp->if_capenable & IFCAP_POLLING) 1399 em_disable_intr(adapter); 1400 else 1401 #endif /* DEVICE_POLLING */ 1402 em_enable_intr(adapter); 1403 1404 /* AMT based hardware can now take control from firmware */ 1405 if (adapter->has_manage && adapter->has_amt) 1406 em_get_hw_control(adapter); 1407 } 1408 1409 static void 1410 em_init(void *arg) 1411 { 1412 struct adapter *adapter = arg; 1413 1414 EM_CORE_LOCK(adapter); 1415 em_init_locked(adapter); 1416 EM_CORE_UNLOCK(adapter); 1417 } 1418 1419 1420 #ifdef DEVICE_POLLING 1421 /********************************************************************* 1422 * 1423 * Legacy polling routine: note this only works with single queue 1424 * 1425 *********************************************************************/ 1426 static int 1427 em_poll(struct ifnet *ifp, enum poll_cmd cmd, int count) 1428 { 1429 struct adapter *adapter = ifp->if_softc; 1430 struct tx_ring *txr = adapter->tx_rings; 1431 struct rx_ring *rxr = adapter->rx_rings; 1432 u32 reg_icr; 1433 int rx_done; 1434 1435 EM_CORE_LOCK(adapter); 1436 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) { 1437 EM_CORE_UNLOCK(adapter); 1438 return (0); 1439 } 1440 1441 if (cmd == POLL_AND_CHECK_STATUS) { 1442 reg_icr = E1000_READ_REG(&adapter->hw, E1000_ICR); 1443 if (reg_icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) { 1444 callout_stop(&adapter->timer); 1445 adapter->hw.mac.get_link_status = 1; 1446 em_update_link_status(adapter); 1447 callout_reset(&adapter->timer, hz, 1448 em_local_timer, adapter); 1449 } 1450 } 1451 EM_CORE_UNLOCK(adapter); 1452 1453 em_rxeof(rxr, count, &rx_done); 1454 1455 EM_TX_LOCK(txr); 1456 em_txeof(txr); 1457 #ifdef EM_MULTIQUEUE 1458 if (!drbr_empty(ifp, txr->br)) 1459 em_mq_start_locked(ifp, txr, NULL); 1460 #else 1461 if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd)) 1462 em_start_locked(ifp, txr); 1463 #endif 1464 EM_TX_UNLOCK(txr); 1465 1466 return (rx_done); 1467 } 1468 #endif /* DEVICE_POLLING */ 1469 1470 1471 /********************************************************************* 1472 * 1473 * Fast Legacy/MSI Combined Interrupt Service routine 1474 * 1475 *********************************************************************/ 1476 static int 1477 em_irq_fast(void *arg) 1478 { 1479 struct adapter *adapter = arg; 1480 struct ifnet *ifp; 1481 u32 reg_icr; 1482 1483 ifp = adapter->ifp; 1484 1485 reg_icr = E1000_READ_REG(&adapter->hw, E1000_ICR); 1486 1487 /* Hot eject? */ 1488 if (reg_icr == 0xffffffff) 1489 return FILTER_STRAY; 1490 1491 /* Definitely not our interrupt. */ 1492 if (reg_icr == 0x0) 1493 return FILTER_STRAY; 1494 1495 /* 1496 * Starting with the 82571 chip, bit 31 should be used to 1497 * determine whether the interrupt belongs to us. 1498 */ 1499 if (adapter->hw.mac.type >= e1000_82571 && 1500 (reg_icr & E1000_ICR_INT_ASSERTED) == 0) 1501 return FILTER_STRAY; 1502 1503 em_disable_intr(adapter); 1504 taskqueue_enqueue(adapter->tq, &adapter->que_task); 1505 1506 /* Link status change */ 1507 if (reg_icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) { 1508 adapter->hw.mac.get_link_status = 1; 1509 taskqueue_enqueue(taskqueue_fast, &adapter->link_task); 1510 } 1511 1512 if (reg_icr & E1000_ICR_RXO) 1513 adapter->rx_overruns++; 1514 return FILTER_HANDLED; 1515 } 1516 1517 /* Combined RX/TX handler, used by Legacy and MSI */ 1518 static void 1519 em_handle_que(void *context, int pending) 1520 { 1521 struct adapter *adapter = context; 1522 struct ifnet *ifp = adapter->ifp; 1523 struct tx_ring *txr = adapter->tx_rings; 1524 struct rx_ring *rxr = adapter->rx_rings; 1525 1526 1527 if (ifp->if_drv_flags & IFF_DRV_RUNNING) { 1528 bool more = em_rxeof(rxr, adapter->rx_process_limit, NULL); 1529 EM_TX_LOCK(txr); 1530 em_txeof(txr); 1531 #ifdef EM_MULTIQUEUE 1532 if (!drbr_empty(ifp, txr->br)) 1533 em_mq_start_locked(ifp, txr, NULL); 1534 #else 1535 if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd)) 1536 em_start_locked(ifp, txr); 1537 #endif 1538 EM_TX_UNLOCK(txr); 1539 if (more) { 1540 taskqueue_enqueue(adapter->tq, &adapter->que_task); 1541 return; 1542 } 1543 } 1544 1545 em_enable_intr(adapter); 1546 return; 1547 } 1548 1549 1550 /********************************************************************* 1551 * 1552 * MSIX Interrupt Service Routines 1553 * 1554 **********************************************************************/ 1555 static void 1556 em_msix_tx(void *arg) 1557 { 1558 struct tx_ring *txr = arg; 1559 struct adapter *adapter = txr->adapter; 1560 struct ifnet *ifp = adapter->ifp; 1561 1562 ++txr->tx_irq; 1563 EM_TX_LOCK(txr); 1564 em_txeof(txr); 1565 #ifdef EM_MULTIQUEUE 1566 if (!drbr_empty(ifp, txr->br)) 1567 em_mq_start_locked(ifp, txr, NULL); 1568 #else 1569 if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd)) 1570 em_start_locked(ifp, txr); 1571 #endif 1572 /* Reenable this interrupt */ 1573 E1000_WRITE_REG(&adapter->hw, E1000_IMS, txr->ims); 1574 EM_TX_UNLOCK(txr); 1575 return; 1576 } 1577 1578 /********************************************************************* 1579 * 1580 * MSIX RX Interrupt Service routine 1581 * 1582 **********************************************************************/ 1583 1584 static void 1585 em_msix_rx(void *arg) 1586 { 1587 struct rx_ring *rxr = arg; 1588 struct adapter *adapter = rxr->adapter; 1589 bool more; 1590 1591 ++rxr->rx_irq; 1592 if (!(adapter->ifp->if_drv_flags & IFF_DRV_RUNNING)) 1593 return; 1594 more = em_rxeof(rxr, adapter->rx_process_limit, NULL); 1595 if (more) 1596 taskqueue_enqueue(rxr->tq, &rxr->rx_task); 1597 else 1598 /* Reenable this interrupt */ 1599 E1000_WRITE_REG(&adapter->hw, E1000_IMS, rxr->ims); 1600 return; 1601 } 1602 1603 /********************************************************************* 1604 * 1605 * MSIX Link Fast Interrupt Service routine 1606 * 1607 **********************************************************************/ 1608 static void 1609 em_msix_link(void *arg) 1610 { 1611 struct adapter *adapter = arg; 1612 u32 reg_icr; 1613 1614 ++adapter->link_irq; 1615 reg_icr = E1000_READ_REG(&adapter->hw, E1000_ICR); 1616 1617 if (reg_icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) { 1618 adapter->hw.mac.get_link_status = 1; 1619 em_handle_link(adapter, 0); 1620 } else 1621 E1000_WRITE_REG(&adapter->hw, E1000_IMS, 1622 EM_MSIX_LINK | E1000_IMS_LSC); 1623 return; 1624 } 1625 1626 static void 1627 em_handle_rx(void *context, int pending) 1628 { 1629 struct rx_ring *rxr = context; 1630 struct adapter *adapter = rxr->adapter; 1631 bool more; 1632 1633 more = em_rxeof(rxr, adapter->rx_process_limit, NULL); 1634 if (more) 1635 taskqueue_enqueue(rxr->tq, &rxr->rx_task); 1636 else 1637 /* Reenable this interrupt */ 1638 E1000_WRITE_REG(&adapter->hw, E1000_IMS, rxr->ims); 1639 } 1640 1641 static void 1642 em_handle_tx(void *context, int pending) 1643 { 1644 struct tx_ring *txr = context; 1645 struct adapter *adapter = txr->adapter; 1646 struct ifnet *ifp = adapter->ifp; 1647 1648 EM_TX_LOCK(txr); 1649 em_txeof(txr); 1650 #ifdef EM_MULTIQUEUE 1651 if (!drbr_empty(ifp, txr->br)) 1652 em_mq_start_locked(ifp, txr, NULL); 1653 #else 1654 if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd)) 1655 em_start_locked(ifp, txr); 1656 #endif 1657 E1000_WRITE_REG(&adapter->hw, E1000_IMS, txr->ims); 1658 EM_TX_UNLOCK(txr); 1659 } 1660 1661 static void 1662 em_handle_link(void *context, int pending) 1663 { 1664 struct adapter *adapter = context; 1665 struct tx_ring *txr = adapter->tx_rings; 1666 struct ifnet *ifp = adapter->ifp; 1667 1668 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) 1669 return; 1670 1671 EM_CORE_LOCK(adapter); 1672 callout_stop(&adapter->timer); 1673 em_update_link_status(adapter); 1674 callout_reset(&adapter->timer, hz, em_local_timer, adapter); 1675 E1000_WRITE_REG(&adapter->hw, E1000_IMS, 1676 EM_MSIX_LINK | E1000_IMS_LSC); 1677 if (adapter->link_active) { 1678 for (int i = 0; i < adapter->num_queues; i++, txr++) { 1679 EM_TX_LOCK(txr); 1680 #ifdef EM_MULTIQUEUE 1681 if (!drbr_empty(ifp, txr->br)) 1682 em_mq_start_locked(ifp, txr, NULL); 1683 #else 1684 if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd)) 1685 em_start_locked(ifp, txr); 1686 #endif 1687 EM_TX_UNLOCK(txr); 1688 } 1689 } 1690 EM_CORE_UNLOCK(adapter); 1691 } 1692 1693 1694 /********************************************************************* 1695 * 1696 * Media Ioctl callback 1697 * 1698 * This routine is called whenever the user queries the status of 1699 * the interface using ifconfig. 1700 * 1701 **********************************************************************/ 1702 static void 1703 em_media_status(struct ifnet *ifp, struct ifmediareq *ifmr) 1704 { 1705 struct adapter *adapter = ifp->if_softc; 1706 u_char fiber_type = IFM_1000_SX; 1707 1708 INIT_DEBUGOUT("em_media_status: begin"); 1709 1710 EM_CORE_LOCK(adapter); 1711 em_update_link_status(adapter); 1712 1713 ifmr->ifm_status = IFM_AVALID; 1714 ifmr->ifm_active = IFM_ETHER; 1715 1716 if (!adapter->link_active) { 1717 EM_CORE_UNLOCK(adapter); 1718 return; 1719 } 1720 1721 ifmr->ifm_status |= IFM_ACTIVE; 1722 1723 if ((adapter->hw.phy.media_type == e1000_media_type_fiber) || 1724 (adapter->hw.phy.media_type == e1000_media_type_internal_serdes)) { 1725 ifmr->ifm_active |= fiber_type | IFM_FDX; 1726 } else { 1727 switch (adapter->link_speed) { 1728 case 10: 1729 ifmr->ifm_active |= IFM_10_T; 1730 break; 1731 case 100: 1732 ifmr->ifm_active |= IFM_100_TX; 1733 break; 1734 case 1000: 1735 ifmr->ifm_active |= IFM_1000_T; 1736 break; 1737 } 1738 if (adapter->link_duplex == FULL_DUPLEX) 1739 ifmr->ifm_active |= IFM_FDX; 1740 else 1741 ifmr->ifm_active |= IFM_HDX; 1742 } 1743 EM_CORE_UNLOCK(adapter); 1744 } 1745 1746 /********************************************************************* 1747 * 1748 * Media Ioctl callback 1749 * 1750 * This routine is called when the user changes speed/duplex using 1751 * media/mediopt option with ifconfig. 1752 * 1753 **********************************************************************/ 1754 static int 1755 em_media_change(struct ifnet *ifp) 1756 { 1757 struct adapter *adapter = ifp->if_softc; 1758 struct ifmedia *ifm = &adapter->media; 1759 1760 INIT_DEBUGOUT("em_media_change: begin"); 1761 1762 if (IFM_TYPE(ifm->ifm_media) != IFM_ETHER) 1763 return (EINVAL); 1764 1765 EM_CORE_LOCK(adapter); 1766 switch (IFM_SUBTYPE(ifm->ifm_media)) { 1767 case IFM_AUTO: 1768 adapter->hw.mac.autoneg = DO_AUTO_NEG; 1769 adapter->hw.phy.autoneg_advertised = AUTONEG_ADV_DEFAULT; 1770 break; 1771 case IFM_1000_LX: 1772 case IFM_1000_SX: 1773 case IFM_1000_T: 1774 adapter->hw.mac.autoneg = DO_AUTO_NEG; 1775 adapter->hw.phy.autoneg_advertised = ADVERTISE_1000_FULL; 1776 break; 1777 case IFM_100_TX: 1778 adapter->hw.mac.autoneg = FALSE; 1779 adapter->hw.phy.autoneg_advertised = 0; 1780 if ((ifm->ifm_media & IFM_GMASK) == IFM_FDX) 1781 adapter->hw.mac.forced_speed_duplex = ADVERTISE_100_FULL; 1782 else 1783 adapter->hw.mac.forced_speed_duplex = ADVERTISE_100_HALF; 1784 break; 1785 case IFM_10_T: 1786 adapter->hw.mac.autoneg = FALSE; 1787 adapter->hw.phy.autoneg_advertised = 0; 1788 if ((ifm->ifm_media & IFM_GMASK) == IFM_FDX) 1789 adapter->hw.mac.forced_speed_duplex = ADVERTISE_10_FULL; 1790 else 1791 adapter->hw.mac.forced_speed_duplex = ADVERTISE_10_HALF; 1792 break; 1793 default: 1794 device_printf(adapter->dev, "Unsupported media type\n"); 1795 } 1796 1797 em_init_locked(adapter); 1798 EM_CORE_UNLOCK(adapter); 1799 1800 return (0); 1801 } 1802 1803 /********************************************************************* 1804 * 1805 * This routine maps the mbufs to tx descriptors. 1806 * 1807 * return 0 on success, positive on failure 1808 **********************************************************************/ 1809 1810 static int 1811 em_xmit(struct tx_ring *txr, struct mbuf **m_headp) 1812 { 1813 struct adapter *adapter = txr->adapter; 1814 bus_dma_segment_t segs[EM_MAX_SCATTER]; 1815 bus_dmamap_t map; 1816 struct em_buffer *tx_buffer, *tx_buffer_mapped; 1817 struct e1000_tx_desc *ctxd = NULL; 1818 struct mbuf *m_head; 1819 struct ether_header *eh; 1820 struct ip *ip = NULL; 1821 struct tcphdr *tp = NULL; 1822 u32 txd_upper, txd_lower, txd_used, txd_saved; 1823 int ip_off, poff; 1824 int nsegs, i, j, first, last = 0; 1825 int error, do_tso, tso_desc = 0, remap = 1; 1826 1827 retry: 1828 m_head = *m_headp; 1829 txd_upper = txd_lower = txd_used = txd_saved = 0; 1830 do_tso = ((m_head->m_pkthdr.csum_flags & CSUM_TSO) != 0); 1831 ip_off = poff = 0; 1832 1833 /* 1834 * Intel recommends entire IP/TCP header length reside in a single 1835 * buffer. If multiple descriptors are used to describe the IP and 1836 * TCP header, each descriptor should describe one or more 1837 * complete headers; descriptors referencing only parts of headers 1838 * are not supported. If all layer headers are not coalesced into 1839 * a single buffer, each buffer should not cross a 4KB boundary, 1840 * or be larger than the maximum read request size. 1841 * Controller also requires modifing IP/TCP header to make TSO work 1842 * so we firstly get a writable mbuf chain then coalesce ethernet/ 1843 * IP/TCP header into a single buffer to meet the requirement of 1844 * controller. This also simplifies IP/TCP/UDP checksum offloading 1845 * which also has similiar restrictions. 1846 */ 1847 if (do_tso || m_head->m_pkthdr.csum_flags & CSUM_OFFLOAD) { 1848 if (do_tso || (m_head->m_next != NULL && 1849 m_head->m_pkthdr.csum_flags & CSUM_OFFLOAD)) { 1850 if (M_WRITABLE(*m_headp) == 0) { 1851 m_head = m_dup(*m_headp, M_NOWAIT); 1852 m_freem(*m_headp); 1853 if (m_head == NULL) { 1854 *m_headp = NULL; 1855 return (ENOBUFS); 1856 } 1857 *m_headp = m_head; 1858 } 1859 } 1860 /* 1861 * XXX 1862 * Assume IPv4, we don't have TSO/checksum offload support 1863 * for IPv6 yet. 1864 */ 1865 ip_off = sizeof(struct ether_header); 1866 m_head = m_pullup(m_head, ip_off); 1867 if (m_head == NULL) { 1868 *m_headp = NULL; 1869 return (ENOBUFS); 1870 } 1871 eh = mtod(m_head, struct ether_header *); 1872 if (eh->ether_type == htons(ETHERTYPE_VLAN)) { 1873 ip_off = sizeof(struct ether_vlan_header); 1874 m_head = m_pullup(m_head, ip_off); 1875 if (m_head == NULL) { 1876 *m_headp = NULL; 1877 return (ENOBUFS); 1878 } 1879 } 1880 m_head = m_pullup(m_head, ip_off + sizeof(struct ip)); 1881 if (m_head == NULL) { 1882 *m_headp = NULL; 1883 return (ENOBUFS); 1884 } 1885 ip = (struct ip *)(mtod(m_head, char *) + ip_off); 1886 poff = ip_off + (ip->ip_hl << 2); 1887 if (do_tso) { 1888 m_head = m_pullup(m_head, poff + sizeof(struct tcphdr)); 1889 if (m_head == NULL) { 1890 *m_headp = NULL; 1891 return (ENOBUFS); 1892 } 1893 tp = (struct tcphdr *)(mtod(m_head, char *) + poff); 1894 /* 1895 * TSO workaround: 1896 * pull 4 more bytes of data into it. 1897 */ 1898 m_head = m_pullup(m_head, poff + (tp->th_off << 2) + 4); 1899 if (m_head == NULL) { 1900 *m_headp = NULL; 1901 return (ENOBUFS); 1902 } 1903 ip = (struct ip *)(mtod(m_head, char *) + ip_off); 1904 ip->ip_len = 0; 1905 ip->ip_sum = 0; 1906 /* 1907 * The pseudo TCP checksum does not include TCP payload 1908 * length so driver should recompute the checksum here 1909 * what hardware expect to see. This is adherence of 1910 * Microsoft's Large Send specification. 1911 */ 1912 tp = (struct tcphdr *)(mtod(m_head, char *) + poff); 1913 tp->th_sum = in_pseudo(ip->ip_src.s_addr, 1914 ip->ip_dst.s_addr, htons(IPPROTO_TCP)); 1915 } else if (m_head->m_pkthdr.csum_flags & CSUM_TCP) { 1916 m_head = m_pullup(m_head, poff + sizeof(struct tcphdr)); 1917 if (m_head == NULL) { 1918 *m_headp = NULL; 1919 return (ENOBUFS); 1920 } 1921 tp = (struct tcphdr *)(mtod(m_head, char *) + poff); 1922 m_head = m_pullup(m_head, poff + (tp->th_off << 2)); 1923 if (m_head == NULL) { 1924 *m_headp = NULL; 1925 return (ENOBUFS); 1926 } 1927 ip = (struct ip *)(mtod(m_head, char *) + ip_off); 1928 tp = (struct tcphdr *)(mtod(m_head, char *) + poff); 1929 } else if (m_head->m_pkthdr.csum_flags & CSUM_UDP) { 1930 m_head = m_pullup(m_head, poff + sizeof(struct udphdr)); 1931 if (m_head == NULL) { 1932 *m_headp = NULL; 1933 return (ENOBUFS); 1934 } 1935 ip = (struct ip *)(mtod(m_head, char *) + ip_off); 1936 } 1937 *m_headp = m_head; 1938 } 1939 1940 /* 1941 * Map the packet for DMA 1942 * 1943 * Capture the first descriptor index, 1944 * this descriptor will have the index 1945 * of the EOP which is the only one that 1946 * now gets a DONE bit writeback. 1947 */ 1948 first = txr->next_avail_desc; 1949 tx_buffer = &txr->tx_buffers[first]; 1950 tx_buffer_mapped = tx_buffer; 1951 map = tx_buffer->map; 1952 1953 error = bus_dmamap_load_mbuf_sg(txr->txtag, map, 1954 *m_headp, segs, &nsegs, BUS_DMA_NOWAIT); 1955 1956 /* 1957 * There are two types of errors we can (try) to handle: 1958 * - EFBIG means the mbuf chain was too long and bus_dma ran 1959 * out of segments. Defragment the mbuf chain and try again. 1960 * - ENOMEM means bus_dma could not obtain enough bounce buffers 1961 * at this point in time. Defer sending and try again later. 1962 * All other errors, in particular EINVAL, are fatal and prevent the 1963 * mbuf chain from ever going through. Drop it and report error. 1964 */ 1965 if (error == EFBIG && remap) { 1966 struct mbuf *m; 1967 1968 m = m_defrag(*m_headp, M_NOWAIT); 1969 if (m == NULL) { 1970 adapter->mbuf_alloc_failed++; 1971 m_freem(*m_headp); 1972 *m_headp = NULL; 1973 return (ENOBUFS); 1974 } 1975 *m_headp = m; 1976 1977 /* Try it again, but only once */ 1978 remap = 0; 1979 goto retry; 1980 } else if (error == ENOMEM) { 1981 adapter->no_tx_dma_setup++; 1982 return (error); 1983 } else if (error != 0) { 1984 adapter->no_tx_dma_setup++; 1985 m_freem(*m_headp); 1986 *m_headp = NULL; 1987 return (error); 1988 } 1989 1990 /* 1991 * TSO Hardware workaround, if this packet is not 1992 * TSO, and is only a single descriptor long, and 1993 * it follows a TSO burst, then we need to add a 1994 * sentinel descriptor to prevent premature writeback. 1995 */ 1996 if ((do_tso == 0) && (txr->tx_tso == TRUE)) { 1997 if (nsegs == 1) 1998 tso_desc = TRUE; 1999 txr->tx_tso = FALSE; 2000 } 2001 2002 if (nsegs > (txr->tx_avail - 2)) { 2003 txr->no_desc_avail++; 2004 bus_dmamap_unload(txr->txtag, map); 2005 return (ENOBUFS); 2006 } 2007 m_head = *m_headp; 2008 2009 /* Do hardware assists */ 2010 if (m_head->m_pkthdr.csum_flags & CSUM_TSO) { 2011 em_tso_setup(txr, m_head, ip_off, ip, tp, 2012 &txd_upper, &txd_lower); 2013 /* we need to make a final sentinel transmit desc */ 2014 tso_desc = TRUE; 2015 } else if (m_head->m_pkthdr.csum_flags & CSUM_OFFLOAD) 2016 em_transmit_checksum_setup(txr, m_head, 2017 ip_off, ip, &txd_upper, &txd_lower); 2018 2019 if (m_head->m_flags & M_VLANTAG) { 2020 /* Set the vlan id. */ 2021 txd_upper |= 2022 (htole16(m_head->m_pkthdr.ether_vtag) << 16); 2023 /* Tell hardware to add tag */ 2024 txd_lower |= htole32(E1000_TXD_CMD_VLE); 2025 } 2026 2027 i = txr->next_avail_desc; 2028 2029 /* Set up our transmit descriptors */ 2030 for (j = 0; j < nsegs; j++) { 2031 bus_size_t seg_len; 2032 bus_addr_t seg_addr; 2033 2034 tx_buffer = &txr->tx_buffers[i]; 2035 ctxd = &txr->tx_base[i]; 2036 seg_addr = segs[j].ds_addr; 2037 seg_len = segs[j].ds_len; 2038 /* 2039 ** TSO Workaround: 2040 ** If this is the last descriptor, we want to 2041 ** split it so we have a small final sentinel 2042 */ 2043 if (tso_desc && (j == (nsegs -1)) && (seg_len > 8)) { 2044 seg_len -= 4; 2045 ctxd->buffer_addr = htole64(seg_addr); 2046 ctxd->lower.data = htole32( 2047 adapter->txd_cmd | txd_lower | seg_len); 2048 ctxd->upper.data = 2049 htole32(txd_upper); 2050 if (++i == adapter->num_tx_desc) 2051 i = 0; 2052 /* Now make the sentinel */ 2053 ++txd_used; /* using an extra txd */ 2054 ctxd = &txr->tx_base[i]; 2055 tx_buffer = &txr->tx_buffers[i]; 2056 ctxd->buffer_addr = 2057 htole64(seg_addr + seg_len); 2058 ctxd->lower.data = htole32( 2059 adapter->txd_cmd | txd_lower | 4); 2060 ctxd->upper.data = 2061 htole32(txd_upper); 2062 last = i; 2063 if (++i == adapter->num_tx_desc) 2064 i = 0; 2065 } else { 2066 ctxd->buffer_addr = htole64(seg_addr); 2067 ctxd->lower.data = htole32( 2068 adapter->txd_cmd | txd_lower | seg_len); 2069 ctxd->upper.data = 2070 htole32(txd_upper); 2071 last = i; 2072 if (++i == adapter->num_tx_desc) 2073 i = 0; 2074 } 2075 tx_buffer->m_head = NULL; 2076 tx_buffer->next_eop = -1; 2077 } 2078 2079 txr->next_avail_desc = i; 2080 txr->tx_avail -= nsegs; 2081 if (tso_desc) /* TSO used an extra for sentinel */ 2082 txr->tx_avail -= txd_used; 2083 2084 tx_buffer->m_head = m_head; 2085 /* 2086 ** Here we swap the map so the last descriptor, 2087 ** which gets the completion interrupt has the 2088 ** real map, and the first descriptor gets the 2089 ** unused map from this descriptor. 2090 */ 2091 tx_buffer_mapped->map = tx_buffer->map; 2092 tx_buffer->map = map; 2093 bus_dmamap_sync(txr->txtag, map, BUS_DMASYNC_PREWRITE); 2094 2095 /* 2096 * Last Descriptor of Packet 2097 * needs End Of Packet (EOP) 2098 * and Report Status (RS) 2099 */ 2100 ctxd->lower.data |= 2101 htole32(E1000_TXD_CMD_EOP | E1000_TXD_CMD_RS); 2102 /* 2103 * Keep track in the first buffer which 2104 * descriptor will be written back 2105 */ 2106 tx_buffer = &txr->tx_buffers[first]; 2107 tx_buffer->next_eop = last; 2108 /* Update the watchdog time early and often */ 2109 txr->watchdog_time = ticks; 2110 2111 /* 2112 * Advance the Transmit Descriptor Tail (TDT), this tells the E1000 2113 * that this frame is available to transmit. 2114 */ 2115 bus_dmamap_sync(txr->txdma.dma_tag, txr->txdma.dma_map, 2116 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 2117 E1000_WRITE_REG(&adapter->hw, E1000_TDT(txr->me), i); 2118 2119 return (0); 2120 } 2121 2122 static void 2123 em_set_promisc(struct adapter *adapter) 2124 { 2125 struct ifnet *ifp = adapter->ifp; 2126 u32 reg_rctl; 2127 2128 reg_rctl = E1000_READ_REG(&adapter->hw, E1000_RCTL); 2129 2130 if (ifp->if_flags & IFF_PROMISC) { 2131 reg_rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE); 2132 /* Turn this on if you want to see bad packets */ 2133 if (em_debug_sbp) 2134 reg_rctl |= E1000_RCTL_SBP; 2135 E1000_WRITE_REG(&adapter->hw, E1000_RCTL, reg_rctl); 2136 } else if (ifp->if_flags & IFF_ALLMULTI) { 2137 reg_rctl |= E1000_RCTL_MPE; 2138 reg_rctl &= ~E1000_RCTL_UPE; 2139 E1000_WRITE_REG(&adapter->hw, E1000_RCTL, reg_rctl); 2140 } 2141 } 2142 2143 static void 2144 em_disable_promisc(struct adapter *adapter) 2145 { 2146 struct ifnet *ifp = adapter->ifp; 2147 u32 reg_rctl; 2148 int mcnt = 0; 2149 2150 reg_rctl = E1000_READ_REG(&adapter->hw, E1000_RCTL); 2151 reg_rctl &= (~E1000_RCTL_UPE); 2152 if (ifp->if_flags & IFF_ALLMULTI) 2153 mcnt = MAX_NUM_MULTICAST_ADDRESSES; 2154 else { 2155 struct ifmultiaddr *ifma; 2156 #if __FreeBSD_version < 800000 2157 IF_ADDR_LOCK(ifp); 2158 #else 2159 if_maddr_rlock(ifp); 2160 #endif 2161 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) { 2162 if (ifma->ifma_addr->sa_family != AF_LINK) 2163 continue; 2164 if (mcnt == MAX_NUM_MULTICAST_ADDRESSES) 2165 break; 2166 mcnt++; 2167 } 2168 #if __FreeBSD_version < 800000 2169 IF_ADDR_UNLOCK(ifp); 2170 #else 2171 if_maddr_runlock(ifp); 2172 #endif 2173 } 2174 /* Don't disable if in MAX groups */ 2175 if (mcnt < MAX_NUM_MULTICAST_ADDRESSES) 2176 reg_rctl &= (~E1000_RCTL_MPE); 2177 reg_rctl &= (~E1000_RCTL_SBP); 2178 E1000_WRITE_REG(&adapter->hw, E1000_RCTL, reg_rctl); 2179 } 2180 2181 2182 /********************************************************************* 2183 * Multicast Update 2184 * 2185 * This routine is called whenever multicast address list is updated. 2186 * 2187 **********************************************************************/ 2188 2189 static void 2190 em_set_multi(struct adapter *adapter) 2191 { 2192 struct ifnet *ifp = adapter->ifp; 2193 struct ifmultiaddr *ifma; 2194 u32 reg_rctl = 0; 2195 u8 *mta; /* Multicast array memory */ 2196 int mcnt = 0; 2197 2198 IOCTL_DEBUGOUT("em_set_multi: begin"); 2199 2200 mta = adapter->mta; 2201 bzero(mta, sizeof(u8) * ETH_ADDR_LEN * MAX_NUM_MULTICAST_ADDRESSES); 2202 2203 if (adapter->hw.mac.type == e1000_82542 && 2204 adapter->hw.revision_id == E1000_REVISION_2) { 2205 reg_rctl = E1000_READ_REG(&adapter->hw, E1000_RCTL); 2206 if (adapter->hw.bus.pci_cmd_word & CMD_MEM_WRT_INVALIDATE) 2207 e1000_pci_clear_mwi(&adapter->hw); 2208 reg_rctl |= E1000_RCTL_RST; 2209 E1000_WRITE_REG(&adapter->hw, E1000_RCTL, reg_rctl); 2210 msec_delay(5); 2211 } 2212 2213 #if __FreeBSD_version < 800000 2214 IF_ADDR_LOCK(ifp); 2215 #else 2216 if_maddr_rlock(ifp); 2217 #endif 2218 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) { 2219 if (ifma->ifma_addr->sa_family != AF_LINK) 2220 continue; 2221 2222 if (mcnt == MAX_NUM_MULTICAST_ADDRESSES) 2223 break; 2224 2225 bcopy(LLADDR((struct sockaddr_dl *)ifma->ifma_addr), 2226 &mta[mcnt * ETH_ADDR_LEN], ETH_ADDR_LEN); 2227 mcnt++; 2228 } 2229 #if __FreeBSD_version < 800000 2230 IF_ADDR_UNLOCK(ifp); 2231 #else 2232 if_maddr_runlock(ifp); 2233 #endif 2234 if (mcnt >= MAX_NUM_MULTICAST_ADDRESSES) { 2235 reg_rctl = E1000_READ_REG(&adapter->hw, E1000_RCTL); 2236 reg_rctl |= E1000_RCTL_MPE; 2237 E1000_WRITE_REG(&adapter->hw, E1000_RCTL, reg_rctl); 2238 } else 2239 e1000_update_mc_addr_list(&adapter->hw, mta, mcnt); 2240 2241 if (adapter->hw.mac.type == e1000_82542 && 2242 adapter->hw.revision_id == E1000_REVISION_2) { 2243 reg_rctl = E1000_READ_REG(&adapter->hw, E1000_RCTL); 2244 reg_rctl &= ~E1000_RCTL_RST; 2245 E1000_WRITE_REG(&adapter->hw, E1000_RCTL, reg_rctl); 2246 msec_delay(5); 2247 if (adapter->hw.bus.pci_cmd_word & CMD_MEM_WRT_INVALIDATE) 2248 e1000_pci_set_mwi(&adapter->hw); 2249 } 2250 } 2251 2252 2253 /********************************************************************* 2254 * Timer routine 2255 * 2256 * This routine checks for link status and updates statistics. 2257 * 2258 **********************************************************************/ 2259 2260 static void 2261 em_local_timer(void *arg) 2262 { 2263 struct adapter *adapter = arg; 2264 struct ifnet *ifp = adapter->ifp; 2265 struct tx_ring *txr = adapter->tx_rings; 2266 struct rx_ring *rxr = adapter->rx_rings; 2267 u32 trigger; 2268 2269 EM_CORE_LOCK_ASSERT(adapter); 2270 2271 em_update_link_status(adapter); 2272 em_update_stats_counters(adapter); 2273 2274 /* Reset LAA into RAR[0] on 82571 */ 2275 if ((adapter->hw.mac.type == e1000_82571) && 2276 e1000_get_laa_state_82571(&adapter->hw)) 2277 e1000_rar_set(&adapter->hw, adapter->hw.mac.addr, 0); 2278 2279 /* Mask to use in the irq trigger */ 2280 if (adapter->msix_mem) 2281 trigger = rxr->ims; 2282 else 2283 trigger = E1000_ICS_RXDMT0; 2284 2285 /* 2286 ** Check on the state of the TX queue(s), this 2287 ** can be done without the lock because its RO 2288 ** and the HUNG state will be static if set. 2289 */ 2290 for (int i = 0; i < adapter->num_queues; i++, txr++) { 2291 if ((txr->queue_status == EM_QUEUE_HUNG) && 2292 (adapter->pause_frames == 0)) 2293 goto hung; 2294 /* Schedule a TX tasklet if needed */ 2295 if (txr->tx_avail <= EM_MAX_SCATTER) 2296 taskqueue_enqueue(txr->tq, &txr->tx_task); 2297 } 2298 2299 adapter->pause_frames = 0; 2300 callout_reset(&adapter->timer, hz, em_local_timer, adapter); 2301 #ifndef DEVICE_POLLING 2302 /* Trigger an RX interrupt to guarantee mbuf refresh */ 2303 E1000_WRITE_REG(&adapter->hw, E1000_ICS, trigger); 2304 #endif 2305 return; 2306 hung: 2307 /* Looks like we're hung */ 2308 device_printf(adapter->dev, "Watchdog timeout -- resetting\n"); 2309 device_printf(adapter->dev, 2310 "Queue(%d) tdh = %d, hw tdt = %d\n", txr->me, 2311 E1000_READ_REG(&adapter->hw, E1000_TDH(txr->me)), 2312 E1000_READ_REG(&adapter->hw, E1000_TDT(txr->me))); 2313 device_printf(adapter->dev,"TX(%d) desc avail = %d," 2314 "Next TX to Clean = %d\n", 2315 txr->me, txr->tx_avail, txr->next_to_clean); 2316 ifp->if_drv_flags &= ~IFF_DRV_RUNNING; 2317 adapter->watchdog_events++; 2318 adapter->pause_frames = 0; 2319 em_init_locked(adapter); 2320 } 2321 2322 2323 static void 2324 em_update_link_status(struct adapter *adapter) 2325 { 2326 struct e1000_hw *hw = &adapter->hw; 2327 struct ifnet *ifp = adapter->ifp; 2328 device_t dev = adapter->dev; 2329 struct tx_ring *txr = adapter->tx_rings; 2330 u32 link_check = 0; 2331 2332 /* Get the cached link value or read phy for real */ 2333 switch (hw->phy.media_type) { 2334 case e1000_media_type_copper: 2335 if (hw->mac.get_link_status) { 2336 /* Do the work to read phy */ 2337 e1000_check_for_link(hw); 2338 link_check = !hw->mac.get_link_status; 2339 if (link_check) /* ESB2 fix */ 2340 e1000_cfg_on_link_up(hw); 2341 } else 2342 link_check = TRUE; 2343 break; 2344 case e1000_media_type_fiber: 2345 e1000_check_for_link(hw); 2346 link_check = (E1000_READ_REG(hw, E1000_STATUS) & 2347 E1000_STATUS_LU); 2348 break; 2349 case e1000_media_type_internal_serdes: 2350 e1000_check_for_link(hw); 2351 link_check = adapter->hw.mac.serdes_has_link; 2352 break; 2353 default: 2354 case e1000_media_type_unknown: 2355 break; 2356 } 2357 2358 /* Now check for a transition */ 2359 if (link_check && (adapter->link_active == 0)) { 2360 e1000_get_speed_and_duplex(hw, &adapter->link_speed, 2361 &adapter->link_duplex); 2362 /* Check if we must disable SPEED_MODE bit on PCI-E */ 2363 if ((adapter->link_speed != SPEED_1000) && 2364 ((hw->mac.type == e1000_82571) || 2365 (hw->mac.type == e1000_82572))) { 2366 int tarc0; 2367 tarc0 = E1000_READ_REG(hw, E1000_TARC(0)); 2368 tarc0 &= ~SPEED_MODE_BIT; 2369 E1000_WRITE_REG(hw, E1000_TARC(0), tarc0); 2370 } 2371 if (bootverbose) 2372 device_printf(dev, "Link is up %d Mbps %s\n", 2373 adapter->link_speed, 2374 ((adapter->link_duplex == FULL_DUPLEX) ? 2375 "Full Duplex" : "Half Duplex")); 2376 adapter->link_active = 1; 2377 adapter->smartspeed = 0; 2378 ifp->if_baudrate = adapter->link_speed * 1000000; 2379 if_link_state_change(ifp, LINK_STATE_UP); 2380 } else if (!link_check && (adapter->link_active == 1)) { 2381 ifp->if_baudrate = adapter->link_speed = 0; 2382 adapter->link_duplex = 0; 2383 if (bootverbose) 2384 device_printf(dev, "Link is Down\n"); 2385 adapter->link_active = 0; 2386 /* Link down, disable watchdog */ 2387 for (int i = 0; i < adapter->num_queues; i++, txr++) 2388 txr->queue_status = EM_QUEUE_IDLE; 2389 if_link_state_change(ifp, LINK_STATE_DOWN); 2390 } 2391 } 2392 2393 /********************************************************************* 2394 * 2395 * This routine disables all traffic on the adapter by issuing a 2396 * global reset on the MAC and deallocates TX/RX buffers. 2397 * 2398 * This routine should always be called with BOTH the CORE 2399 * and TX locks. 2400 **********************************************************************/ 2401 2402 static void 2403 em_stop(void *arg) 2404 { 2405 struct adapter *adapter = arg; 2406 struct ifnet *ifp = adapter->ifp; 2407 struct tx_ring *txr = adapter->tx_rings; 2408 2409 EM_CORE_LOCK_ASSERT(adapter); 2410 2411 INIT_DEBUGOUT("em_stop: begin"); 2412 2413 em_disable_intr(adapter); 2414 callout_stop(&adapter->timer); 2415 2416 /* Tell the stack that the interface is no longer active */ 2417 ifp->if_drv_flags &= ~IFF_DRV_RUNNING; 2418 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 2419 2420 /* Unarm watchdog timer. */ 2421 for (int i = 0; i < adapter->num_queues; i++, txr++) { 2422 EM_TX_LOCK(txr); 2423 txr->queue_status = EM_QUEUE_IDLE; 2424 EM_TX_UNLOCK(txr); 2425 } 2426 2427 e1000_reset_hw(&adapter->hw); 2428 E1000_WRITE_REG(&adapter->hw, E1000_WUC, 0); 2429 2430 e1000_led_off(&adapter->hw); 2431 e1000_cleanup_led(&adapter->hw); 2432 } 2433 2434 2435 /********************************************************************* 2436 * 2437 * Determine hardware revision. 2438 * 2439 **********************************************************************/ 2440 static void 2441 em_identify_hardware(struct adapter *adapter) 2442 { 2443 device_t dev = adapter->dev; 2444 2445 /* Make sure our PCI config space has the necessary stuff set */ 2446 pci_enable_busmaster(dev); 2447 adapter->hw.bus.pci_cmd_word = pci_read_config(dev, PCIR_COMMAND, 2); 2448 2449 /* Save off the information about this board */ 2450 adapter->hw.vendor_id = pci_get_vendor(dev); 2451 adapter->hw.device_id = pci_get_device(dev); 2452 adapter->hw.revision_id = pci_read_config(dev, PCIR_REVID, 1); 2453 adapter->hw.subsystem_vendor_id = 2454 pci_read_config(dev, PCIR_SUBVEND_0, 2); 2455 adapter->hw.subsystem_device_id = 2456 pci_read_config(dev, PCIR_SUBDEV_0, 2); 2457 2458 /* Do Shared Code Init and Setup */ 2459 if (e1000_set_mac_type(&adapter->hw)) { 2460 device_printf(dev, "Setup init failure\n"); 2461 return; 2462 } 2463 } 2464 2465 static int 2466 em_allocate_pci_resources(struct adapter *adapter) 2467 { 2468 device_t dev = adapter->dev; 2469 int rid; 2470 2471 rid = PCIR_BAR(0); 2472 adapter->memory = bus_alloc_resource_any(dev, SYS_RES_MEMORY, 2473 &rid, RF_ACTIVE); 2474 if (adapter->memory == NULL) { 2475 device_printf(dev, "Unable to allocate bus resource: memory\n"); 2476 return (ENXIO); 2477 } 2478 adapter->osdep.mem_bus_space_tag = 2479 rman_get_bustag(adapter->memory); 2480 adapter->osdep.mem_bus_space_handle = 2481 rman_get_bushandle(adapter->memory); 2482 adapter->hw.hw_addr = (u8 *)&adapter->osdep.mem_bus_space_handle; 2483 2484 /* Default to a single queue */ 2485 adapter->num_queues = 1; 2486 2487 /* 2488 * Setup MSI/X or MSI if PCI Express 2489 */ 2490 adapter->msix = em_setup_msix(adapter); 2491 2492 adapter->hw.back = &adapter->osdep; 2493 2494 return (0); 2495 } 2496 2497 /********************************************************************* 2498 * 2499 * Setup the Legacy or MSI Interrupt handler 2500 * 2501 **********************************************************************/ 2502 int 2503 em_allocate_legacy(struct adapter *adapter) 2504 { 2505 device_t dev = adapter->dev; 2506 struct tx_ring *txr = adapter->tx_rings; 2507 int error, rid = 0; 2508 2509 /* Manually turn off all interrupts */ 2510 E1000_WRITE_REG(&adapter->hw, E1000_IMC, 0xffffffff); 2511 2512 if (adapter->msix == 1) /* using MSI */ 2513 rid = 1; 2514 /* We allocate a single interrupt resource */ 2515 adapter->res = bus_alloc_resource_any(dev, 2516 SYS_RES_IRQ, &rid, RF_SHAREABLE | RF_ACTIVE); 2517 if (adapter->res == NULL) { 2518 device_printf(dev, "Unable to allocate bus resource: " 2519 "interrupt\n"); 2520 return (ENXIO); 2521 } 2522 2523 /* 2524 * Allocate a fast interrupt and the associated 2525 * deferred processing contexts. 2526 */ 2527 TASK_INIT(&adapter->que_task, 0, em_handle_que, adapter); 2528 adapter->tq = taskqueue_create_fast("em_taskq", M_NOWAIT, 2529 taskqueue_thread_enqueue, &adapter->tq); 2530 taskqueue_start_threads(&adapter->tq, 1, PI_NET, "%s que", 2531 device_get_nameunit(adapter->dev)); 2532 /* Use a TX only tasklet for local timer */ 2533 TASK_INIT(&txr->tx_task, 0, em_handle_tx, txr); 2534 txr->tq = taskqueue_create_fast("em_txq", M_NOWAIT, 2535 taskqueue_thread_enqueue, &txr->tq); 2536 taskqueue_start_threads(&txr->tq, 1, PI_NET, "%s txq", 2537 device_get_nameunit(adapter->dev)); 2538 TASK_INIT(&adapter->link_task, 0, em_handle_link, adapter); 2539 if ((error = bus_setup_intr(dev, adapter->res, INTR_TYPE_NET, 2540 em_irq_fast, NULL, adapter, &adapter->tag)) != 0) { 2541 device_printf(dev, "Failed to register fast interrupt " 2542 "handler: %d\n", error); 2543 taskqueue_free(adapter->tq); 2544 adapter->tq = NULL; 2545 return (error); 2546 } 2547 2548 return (0); 2549 } 2550 2551 /********************************************************************* 2552 * 2553 * Setup the MSIX Interrupt handlers 2554 * This is not really Multiqueue, rather 2555 * its just seperate interrupt vectors 2556 * for TX, RX, and Link. 2557 * 2558 **********************************************************************/ 2559 int 2560 em_allocate_msix(struct adapter *adapter) 2561 { 2562 device_t dev = adapter->dev; 2563 struct tx_ring *txr = adapter->tx_rings; 2564 struct rx_ring *rxr = adapter->rx_rings; 2565 int error, rid, vector = 0; 2566 2567 2568 /* Make sure all interrupts are disabled */ 2569 E1000_WRITE_REG(&adapter->hw, E1000_IMC, 0xffffffff); 2570 2571 /* First set up ring resources */ 2572 for (int i = 0; i < adapter->num_queues; i++, txr++, rxr++) { 2573 2574 /* RX ring */ 2575 rid = vector + 1; 2576 2577 rxr->res = bus_alloc_resource_any(dev, 2578 SYS_RES_IRQ, &rid, RF_ACTIVE); 2579 if (rxr->res == NULL) { 2580 device_printf(dev, 2581 "Unable to allocate bus resource: " 2582 "RX MSIX Interrupt %d\n", i); 2583 return (ENXIO); 2584 } 2585 if ((error = bus_setup_intr(dev, rxr->res, 2586 INTR_TYPE_NET | INTR_MPSAFE, NULL, em_msix_rx, 2587 rxr, &rxr->tag)) != 0) { 2588 device_printf(dev, "Failed to register RX handler"); 2589 return (error); 2590 } 2591 #if __FreeBSD_version >= 800504 2592 bus_describe_intr(dev, rxr->res, rxr->tag, "rx %d", i); 2593 #endif 2594 rxr->msix = vector++; /* NOTE increment vector for TX */ 2595 TASK_INIT(&rxr->rx_task, 0, em_handle_rx, rxr); 2596 rxr->tq = taskqueue_create_fast("em_rxq", M_NOWAIT, 2597 taskqueue_thread_enqueue, &rxr->tq); 2598 taskqueue_start_threads(&rxr->tq, 1, PI_NET, "%s rxq", 2599 device_get_nameunit(adapter->dev)); 2600 /* 2601 ** Set the bit to enable interrupt 2602 ** in E1000_IMS -- bits 20 and 21 2603 ** are for RX0 and RX1, note this has 2604 ** NOTHING to do with the MSIX vector 2605 */ 2606 rxr->ims = 1 << (20 + i); 2607 adapter->ivars |= (8 | rxr->msix) << (i * 4); 2608 2609 /* TX ring */ 2610 rid = vector + 1; 2611 txr->res = bus_alloc_resource_any(dev, 2612 SYS_RES_IRQ, &rid, RF_ACTIVE); 2613 if (txr->res == NULL) { 2614 device_printf(dev, 2615 "Unable to allocate bus resource: " 2616 "TX MSIX Interrupt %d\n", i); 2617 return (ENXIO); 2618 } 2619 if ((error = bus_setup_intr(dev, txr->res, 2620 INTR_TYPE_NET | INTR_MPSAFE, NULL, em_msix_tx, 2621 txr, &txr->tag)) != 0) { 2622 device_printf(dev, "Failed to register TX handler"); 2623 return (error); 2624 } 2625 #if __FreeBSD_version >= 800504 2626 bus_describe_intr(dev, txr->res, txr->tag, "tx %d", i); 2627 #endif 2628 txr->msix = vector++; /* Increment vector for next pass */ 2629 TASK_INIT(&txr->tx_task, 0, em_handle_tx, txr); 2630 txr->tq = taskqueue_create_fast("em_txq", M_NOWAIT, 2631 taskqueue_thread_enqueue, &txr->tq); 2632 taskqueue_start_threads(&txr->tq, 1, PI_NET, "%s txq", 2633 device_get_nameunit(adapter->dev)); 2634 /* 2635 ** Set the bit to enable interrupt 2636 ** in E1000_IMS -- bits 22 and 23 2637 ** are for TX0 and TX1, note this has 2638 ** NOTHING to do with the MSIX vector 2639 */ 2640 txr->ims = 1 << (22 + i); 2641 adapter->ivars |= (8 | txr->msix) << (8 + (i * 4)); 2642 } 2643 2644 /* Link interrupt */ 2645 ++rid; 2646 adapter->res = bus_alloc_resource_any(dev, 2647 SYS_RES_IRQ, &rid, RF_ACTIVE); 2648 if (!adapter->res) { 2649 device_printf(dev,"Unable to allocate " 2650 "bus resource: Link interrupt [%d]\n", rid); 2651 return (ENXIO); 2652 } 2653 /* Set the link handler function */ 2654 error = bus_setup_intr(dev, adapter->res, 2655 INTR_TYPE_NET | INTR_MPSAFE, NULL, 2656 em_msix_link, adapter, &adapter->tag); 2657 if (error) { 2658 adapter->res = NULL; 2659 device_printf(dev, "Failed to register LINK handler"); 2660 return (error); 2661 } 2662 #if __FreeBSD_version >= 800504 2663 bus_describe_intr(dev, adapter->res, adapter->tag, "link"); 2664 #endif 2665 adapter->linkvec = vector; 2666 adapter->ivars |= (8 | vector) << 16; 2667 adapter->ivars |= 0x80000000; 2668 2669 return (0); 2670 } 2671 2672 2673 static void 2674 em_free_pci_resources(struct adapter *adapter) 2675 { 2676 device_t dev = adapter->dev; 2677 struct tx_ring *txr; 2678 struct rx_ring *rxr; 2679 int rid; 2680 2681 2682 /* 2683 ** Release all the queue interrupt resources: 2684 */ 2685 for (int i = 0; i < adapter->num_queues; i++) { 2686 txr = &adapter->tx_rings[i]; 2687 rxr = &adapter->rx_rings[i]; 2688 /* an early abort? */ 2689 if ((txr == NULL) || (rxr == NULL)) 2690 break; 2691 rid = txr->msix +1; 2692 if (txr->tag != NULL) { 2693 bus_teardown_intr(dev, txr->res, txr->tag); 2694 txr->tag = NULL; 2695 } 2696 if (txr->res != NULL) 2697 bus_release_resource(dev, SYS_RES_IRQ, 2698 rid, txr->res); 2699 rid = rxr->msix +1; 2700 if (rxr->tag != NULL) { 2701 bus_teardown_intr(dev, rxr->res, rxr->tag); 2702 rxr->tag = NULL; 2703 } 2704 if (rxr->res != NULL) 2705 bus_release_resource(dev, SYS_RES_IRQ, 2706 rid, rxr->res); 2707 } 2708 2709 if (adapter->linkvec) /* we are doing MSIX */ 2710 rid = adapter->linkvec + 1; 2711 else 2712 (adapter->msix != 0) ? (rid = 1):(rid = 0); 2713 2714 if (adapter->tag != NULL) { 2715 bus_teardown_intr(dev, adapter->res, adapter->tag); 2716 adapter->tag = NULL; 2717 } 2718 2719 if (adapter->res != NULL) 2720 bus_release_resource(dev, SYS_RES_IRQ, rid, adapter->res); 2721 2722 2723 if (adapter->msix) 2724 pci_release_msi(dev); 2725 2726 if (adapter->msix_mem != NULL) 2727 bus_release_resource(dev, SYS_RES_MEMORY, 2728 PCIR_BAR(EM_MSIX_BAR), adapter->msix_mem); 2729 2730 if (adapter->memory != NULL) 2731 bus_release_resource(dev, SYS_RES_MEMORY, 2732 PCIR_BAR(0), adapter->memory); 2733 2734 if (adapter->flash != NULL) 2735 bus_release_resource(dev, SYS_RES_MEMORY, 2736 EM_FLASH, adapter->flash); 2737 } 2738 2739 /* 2740 * Setup MSI or MSI/X 2741 */ 2742 static int 2743 em_setup_msix(struct adapter *adapter) 2744 { 2745 device_t dev = adapter->dev; 2746 int val; 2747 2748 /* 2749 ** Setup MSI/X for Hartwell: tests have shown 2750 ** use of two queues to be unstable, and to 2751 ** provide no great gain anyway, so we simply 2752 ** seperate the interrupts and use a single queue. 2753 */ 2754 if ((adapter->hw.mac.type == e1000_82574) && 2755 (em_enable_msix == TRUE)) { 2756 /* Map the MSIX BAR */ 2757 int rid = PCIR_BAR(EM_MSIX_BAR); 2758 adapter->msix_mem = bus_alloc_resource_any(dev, 2759 SYS_RES_MEMORY, &rid, RF_ACTIVE); 2760 if (adapter->msix_mem == NULL) { 2761 /* May not be enabled */ 2762 device_printf(adapter->dev, 2763 "Unable to map MSIX table \n"); 2764 goto msi; 2765 } 2766 val = pci_msix_count(dev); 2767 /* We only need/want 3 vectors */ 2768 if (val >= 3) 2769 val = 3; 2770 else { 2771 device_printf(adapter->dev, 2772 "MSIX: insufficient vectors, using MSI\n"); 2773 goto msi; 2774 } 2775 2776 if ((pci_alloc_msix(dev, &val) == 0) && (val == 3)) { 2777 device_printf(adapter->dev, 2778 "Using MSIX interrupts " 2779 "with %d vectors\n", val); 2780 return (val); 2781 } 2782 2783 /* 2784 ** If MSIX alloc failed or provided us with 2785 ** less than needed, free and fall through to MSI 2786 */ 2787 pci_release_msi(dev); 2788 } 2789 msi: 2790 if (adapter->msix_mem != NULL) { 2791 bus_release_resource(dev, SYS_RES_MEMORY, 2792 PCIR_BAR(EM_MSIX_BAR), adapter->msix_mem); 2793 adapter->msix_mem = NULL; 2794 } 2795 val = 1; 2796 if (pci_alloc_msi(dev, &val) == 0) { 2797 device_printf(adapter->dev,"Using an MSI interrupt\n"); 2798 return (val); 2799 } 2800 /* Should only happen due to manual configuration */ 2801 device_printf(adapter->dev,"No MSI/MSIX using a Legacy IRQ\n"); 2802 return (0); 2803 } 2804 2805 2806 /********************************************************************* 2807 * 2808 * Initialize the hardware to a configuration 2809 * as specified by the adapter structure. 2810 * 2811 **********************************************************************/ 2812 static void 2813 em_reset(struct adapter *adapter) 2814 { 2815 device_t dev = adapter->dev; 2816 struct ifnet *ifp = adapter->ifp; 2817 struct e1000_hw *hw = &adapter->hw; 2818 u16 rx_buffer_size; 2819 u32 pba; 2820 2821 INIT_DEBUGOUT("em_reset: begin"); 2822 2823 /* Set up smart power down as default off on newer adapters. */ 2824 if (!em_smart_pwr_down && (hw->mac.type == e1000_82571 || 2825 hw->mac.type == e1000_82572)) { 2826 u16 phy_tmp = 0; 2827 2828 /* Speed up time to link by disabling smart power down. */ 2829 e1000_read_phy_reg(hw, IGP02E1000_PHY_POWER_MGMT, &phy_tmp); 2830 phy_tmp &= ~IGP02E1000_PM_SPD; 2831 e1000_write_phy_reg(hw, IGP02E1000_PHY_POWER_MGMT, phy_tmp); 2832 } 2833 2834 /* 2835 * Packet Buffer Allocation (PBA) 2836 * Writing PBA sets the receive portion of the buffer 2837 * the remainder is used for the transmit buffer. 2838 */ 2839 switch (hw->mac.type) { 2840 /* Total Packet Buffer on these is 48K */ 2841 case e1000_82571: 2842 case e1000_82572: 2843 case e1000_80003es2lan: 2844 pba = E1000_PBA_32K; /* 32K for Rx, 16K for Tx */ 2845 break; 2846 case e1000_82573: /* 82573: Total Packet Buffer is 32K */ 2847 pba = E1000_PBA_12K; /* 12K for Rx, 20K for Tx */ 2848 break; 2849 case e1000_82574: 2850 case e1000_82583: 2851 pba = E1000_PBA_20K; /* 20K for Rx, 20K for Tx */ 2852 break; 2853 case e1000_ich8lan: 2854 pba = E1000_PBA_8K; 2855 break; 2856 case e1000_ich9lan: 2857 case e1000_ich10lan: 2858 /* Boost Receive side for jumbo frames */ 2859 if (adapter->hw.mac.max_frame_size > 4096) 2860 pba = E1000_PBA_14K; 2861 else 2862 pba = E1000_PBA_10K; 2863 break; 2864 case e1000_pchlan: 2865 case e1000_pch2lan: 2866 case e1000_pch_lpt: 2867 pba = E1000_PBA_26K; 2868 break; 2869 default: 2870 if (adapter->hw.mac.max_frame_size > 8192) 2871 pba = E1000_PBA_40K; /* 40K for Rx, 24K for Tx */ 2872 else 2873 pba = E1000_PBA_48K; /* 48K for Rx, 16K for Tx */ 2874 } 2875 E1000_WRITE_REG(&adapter->hw, E1000_PBA, pba); 2876 2877 /* 2878 * These parameters control the automatic generation (Tx) and 2879 * response (Rx) to Ethernet PAUSE frames. 2880 * - High water mark should allow for at least two frames to be 2881 * received after sending an XOFF. 2882 * - Low water mark works best when it is very near the high water mark. 2883 * This allows the receiver to restart by sending XON when it has 2884 * drained a bit. Here we use an arbitary value of 1500 which will 2885 * restart after one full frame is pulled from the buffer. There 2886 * could be several smaller frames in the buffer and if so they will 2887 * not trigger the XON until their total number reduces the buffer 2888 * by 1500. 2889 * - The pause time is fairly large at 1000 x 512ns = 512 usec. 2890 */ 2891 rx_buffer_size = ((E1000_READ_REG(hw, E1000_PBA) & 0xffff) << 10 ); 2892 hw->fc.high_water = rx_buffer_size - 2893 roundup2(adapter->hw.mac.max_frame_size, 1024); 2894 hw->fc.low_water = hw->fc.high_water - 1500; 2895 2896 if (adapter->fc) /* locally set flow control value? */ 2897 hw->fc.requested_mode = adapter->fc; 2898 else 2899 hw->fc.requested_mode = e1000_fc_full; 2900 2901 if (hw->mac.type == e1000_80003es2lan) 2902 hw->fc.pause_time = 0xFFFF; 2903 else 2904 hw->fc.pause_time = EM_FC_PAUSE_TIME; 2905 2906 hw->fc.send_xon = TRUE; 2907 2908 /* Device specific overrides/settings */ 2909 switch (hw->mac.type) { 2910 case e1000_pchlan: 2911 /* Workaround: no TX flow ctrl for PCH */ 2912 hw->fc.requested_mode = e1000_fc_rx_pause; 2913 hw->fc.pause_time = 0xFFFF; /* override */ 2914 if (ifp->if_mtu > ETHERMTU) { 2915 hw->fc.high_water = 0x3500; 2916 hw->fc.low_water = 0x1500; 2917 } else { 2918 hw->fc.high_water = 0x5000; 2919 hw->fc.low_water = 0x3000; 2920 } 2921 hw->fc.refresh_time = 0x1000; 2922 break; 2923 case e1000_pch2lan: 2924 case e1000_pch_lpt: 2925 hw->fc.high_water = 0x5C20; 2926 hw->fc.low_water = 0x5048; 2927 hw->fc.pause_time = 0x0650; 2928 hw->fc.refresh_time = 0x0400; 2929 /* Jumbos need adjusted PBA */ 2930 if (ifp->if_mtu > ETHERMTU) 2931 E1000_WRITE_REG(hw, E1000_PBA, 12); 2932 else 2933 E1000_WRITE_REG(hw, E1000_PBA, 26); 2934 break; 2935 case e1000_ich9lan: 2936 case e1000_ich10lan: 2937 if (ifp->if_mtu > ETHERMTU) { 2938 hw->fc.high_water = 0x2800; 2939 hw->fc.low_water = hw->fc.high_water - 8; 2940 break; 2941 } 2942 /* else fall thru */ 2943 default: 2944 if (hw->mac.type == e1000_80003es2lan) 2945 hw->fc.pause_time = 0xFFFF; 2946 break; 2947 } 2948 2949 /* Issue a global reset */ 2950 e1000_reset_hw(hw); 2951 E1000_WRITE_REG(hw, E1000_WUC, 0); 2952 em_disable_aspm(adapter); 2953 /* and a re-init */ 2954 if (e1000_init_hw(hw) < 0) { 2955 device_printf(dev, "Hardware Initialization Failed\n"); 2956 return; 2957 } 2958 2959 E1000_WRITE_REG(hw, E1000_VET, ETHERTYPE_VLAN); 2960 e1000_get_phy_info(hw); 2961 e1000_check_for_link(hw); 2962 return; 2963 } 2964 2965 /********************************************************************* 2966 * 2967 * Setup networking device structure and register an interface. 2968 * 2969 **********************************************************************/ 2970 static int 2971 em_setup_interface(device_t dev, struct adapter *adapter) 2972 { 2973 struct ifnet *ifp; 2974 2975 INIT_DEBUGOUT("em_setup_interface: begin"); 2976 2977 ifp = adapter->ifp = if_alloc(IFT_ETHER); 2978 if (ifp == NULL) { 2979 device_printf(dev, "can not allocate ifnet structure\n"); 2980 return (-1); 2981 } 2982 if_initname(ifp, device_get_name(dev), device_get_unit(dev)); 2983 ifp->if_init = em_init; 2984 ifp->if_softc = adapter; 2985 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 2986 ifp->if_ioctl = em_ioctl; 2987 #ifdef EM_MULTIQUEUE 2988 /* Multiqueue stack interface */ 2989 ifp->if_transmit = em_mq_start; 2990 ifp->if_qflush = em_qflush; 2991 #else 2992 ifp->if_start = em_start; 2993 IFQ_SET_MAXLEN(&ifp->if_snd, adapter->num_tx_desc - 1); 2994 ifp->if_snd.ifq_drv_maxlen = adapter->num_tx_desc - 1; 2995 IFQ_SET_READY(&ifp->if_snd); 2996 #endif 2997 2998 ether_ifattach(ifp, adapter->hw.mac.addr); 2999 3000 ifp->if_capabilities = ifp->if_capenable = 0; 3001 3002 3003 ifp->if_capabilities |= IFCAP_HWCSUM | IFCAP_VLAN_HWCSUM; 3004 ifp->if_capabilities |= IFCAP_TSO4; 3005 /* 3006 * Tell the upper layer(s) we 3007 * support full VLAN capability 3008 */ 3009 ifp->if_data.ifi_hdrlen = sizeof(struct ether_vlan_header); 3010 ifp->if_capabilities |= IFCAP_VLAN_HWTAGGING 3011 | IFCAP_VLAN_HWTSO 3012 | IFCAP_VLAN_MTU; 3013 ifp->if_capenable = ifp->if_capabilities; 3014 3015 /* 3016 ** Don't turn this on by default, if vlans are 3017 ** created on another pseudo device (eg. lagg) 3018 ** then vlan events are not passed thru, breaking 3019 ** operation, but with HW FILTER off it works. If 3020 ** using vlans directly on the em driver you can 3021 ** enable this and get full hardware tag filtering. 3022 */ 3023 ifp->if_capabilities |= IFCAP_VLAN_HWFILTER; 3024 3025 #ifdef DEVICE_POLLING 3026 ifp->if_capabilities |= IFCAP_POLLING; 3027 #endif 3028 3029 /* Enable only WOL MAGIC by default */ 3030 if (adapter->wol) { 3031 ifp->if_capabilities |= IFCAP_WOL; 3032 ifp->if_capenable |= IFCAP_WOL_MAGIC; 3033 } 3034 3035 /* 3036 * Specify the media types supported by this adapter and register 3037 * callbacks to update media and link information 3038 */ 3039 ifmedia_init(&adapter->media, IFM_IMASK, 3040 em_media_change, em_media_status); 3041 if ((adapter->hw.phy.media_type == e1000_media_type_fiber) || 3042 (adapter->hw.phy.media_type == e1000_media_type_internal_serdes)) { 3043 u_char fiber_type = IFM_1000_SX; /* default type */ 3044 3045 ifmedia_add(&adapter->media, IFM_ETHER | fiber_type | IFM_FDX, 3046 0, NULL); 3047 ifmedia_add(&adapter->media, IFM_ETHER | fiber_type, 0, NULL); 3048 } else { 3049 ifmedia_add(&adapter->media, IFM_ETHER | IFM_10_T, 0, NULL); 3050 ifmedia_add(&adapter->media, IFM_ETHER | IFM_10_T | IFM_FDX, 3051 0, NULL); 3052 ifmedia_add(&adapter->media, IFM_ETHER | IFM_100_TX, 3053 0, NULL); 3054 ifmedia_add(&adapter->media, IFM_ETHER | IFM_100_TX | IFM_FDX, 3055 0, NULL); 3056 if (adapter->hw.phy.type != e1000_phy_ife) { 3057 ifmedia_add(&adapter->media, 3058 IFM_ETHER | IFM_1000_T | IFM_FDX, 0, NULL); 3059 ifmedia_add(&adapter->media, 3060 IFM_ETHER | IFM_1000_T, 0, NULL); 3061 } 3062 } 3063 ifmedia_add(&adapter->media, IFM_ETHER | IFM_AUTO, 0, NULL); 3064 ifmedia_set(&adapter->media, IFM_ETHER | IFM_AUTO); 3065 return (0); 3066 } 3067 3068 3069 /* 3070 * Manage DMA'able memory. 3071 */ 3072 static void 3073 em_dmamap_cb(void *arg, bus_dma_segment_t *segs, int nseg, int error) 3074 { 3075 if (error) 3076 return; 3077 *(bus_addr_t *) arg = segs[0].ds_addr; 3078 } 3079 3080 static int 3081 em_dma_malloc(struct adapter *adapter, bus_size_t size, 3082 struct em_dma_alloc *dma, int mapflags) 3083 { 3084 int error; 3085 3086 error = bus_dma_tag_create(bus_get_dma_tag(adapter->dev), /* parent */ 3087 EM_DBA_ALIGN, 0, /* alignment, bounds */ 3088 BUS_SPACE_MAXADDR, /* lowaddr */ 3089 BUS_SPACE_MAXADDR, /* highaddr */ 3090 NULL, NULL, /* filter, filterarg */ 3091 size, /* maxsize */ 3092 1, /* nsegments */ 3093 size, /* maxsegsize */ 3094 0, /* flags */ 3095 NULL, /* lockfunc */ 3096 NULL, /* lockarg */ 3097 &dma->dma_tag); 3098 if (error) { 3099 device_printf(adapter->dev, 3100 "%s: bus_dma_tag_create failed: %d\n", 3101 __func__, error); 3102 goto fail_0; 3103 } 3104 3105 error = bus_dmamem_alloc(dma->dma_tag, (void**) &dma->dma_vaddr, 3106 BUS_DMA_NOWAIT | BUS_DMA_COHERENT, &dma->dma_map); 3107 if (error) { 3108 device_printf(adapter->dev, 3109 "%s: bus_dmamem_alloc(%ju) failed: %d\n", 3110 __func__, (uintmax_t)size, error); 3111 goto fail_2; 3112 } 3113 3114 dma->dma_paddr = 0; 3115 error = bus_dmamap_load(dma->dma_tag, dma->dma_map, dma->dma_vaddr, 3116 size, em_dmamap_cb, &dma->dma_paddr, mapflags | BUS_DMA_NOWAIT); 3117 if (error || dma->dma_paddr == 0) { 3118 device_printf(adapter->dev, 3119 "%s: bus_dmamap_load failed: %d\n", 3120 __func__, error); 3121 goto fail_3; 3122 } 3123 3124 return (0); 3125 3126 fail_3: 3127 bus_dmamap_unload(dma->dma_tag, dma->dma_map); 3128 fail_2: 3129 bus_dmamem_free(dma->dma_tag, dma->dma_vaddr, dma->dma_map); 3130 bus_dma_tag_destroy(dma->dma_tag); 3131 fail_0: 3132 dma->dma_map = NULL; 3133 dma->dma_tag = NULL; 3134 3135 return (error); 3136 } 3137 3138 static void 3139 em_dma_free(struct adapter *adapter, struct em_dma_alloc *dma) 3140 { 3141 if (dma->dma_tag == NULL) 3142 return; 3143 if (dma->dma_map != NULL) { 3144 bus_dmamap_sync(dma->dma_tag, dma->dma_map, 3145 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 3146 bus_dmamap_unload(dma->dma_tag, dma->dma_map); 3147 bus_dmamem_free(dma->dma_tag, dma->dma_vaddr, dma->dma_map); 3148 dma->dma_map = NULL; 3149 } 3150 bus_dma_tag_destroy(dma->dma_tag); 3151 dma->dma_tag = NULL; 3152 } 3153 3154 3155 /********************************************************************* 3156 * 3157 * Allocate memory for the transmit and receive rings, and then 3158 * the descriptors associated with each, called only once at attach. 3159 * 3160 **********************************************************************/ 3161 static int 3162 em_allocate_queues(struct adapter *adapter) 3163 { 3164 device_t dev = adapter->dev; 3165 struct tx_ring *txr = NULL; 3166 struct rx_ring *rxr = NULL; 3167 int rsize, tsize, error = E1000_SUCCESS; 3168 int txconf = 0, rxconf = 0; 3169 3170 3171 /* Allocate the TX ring struct memory */ 3172 if (!(adapter->tx_rings = 3173 (struct tx_ring *) malloc(sizeof(struct tx_ring) * 3174 adapter->num_queues, M_DEVBUF, M_NOWAIT | M_ZERO))) { 3175 device_printf(dev, "Unable to allocate TX ring memory\n"); 3176 error = ENOMEM; 3177 goto fail; 3178 } 3179 3180 /* Now allocate the RX */ 3181 if (!(adapter->rx_rings = 3182 (struct rx_ring *) malloc(sizeof(struct rx_ring) * 3183 adapter->num_queues, M_DEVBUF, M_NOWAIT | M_ZERO))) { 3184 device_printf(dev, "Unable to allocate RX ring memory\n"); 3185 error = ENOMEM; 3186 goto rx_fail; 3187 } 3188 3189 tsize = roundup2(adapter->num_tx_desc * 3190 sizeof(struct e1000_tx_desc), EM_DBA_ALIGN); 3191 /* 3192 * Now set up the TX queues, txconf is needed to handle the 3193 * possibility that things fail midcourse and we need to 3194 * undo memory gracefully 3195 */ 3196 for (int i = 0; i < adapter->num_queues; i++, txconf++) { 3197 /* Set up some basics */ 3198 txr = &adapter->tx_rings[i]; 3199 txr->adapter = adapter; 3200 txr->me = i; 3201 3202 /* Initialize the TX lock */ 3203 snprintf(txr->mtx_name, sizeof(txr->mtx_name), "%s:tx(%d)", 3204 device_get_nameunit(dev), txr->me); 3205 mtx_init(&txr->tx_mtx, txr->mtx_name, NULL, MTX_DEF); 3206 3207 if (em_dma_malloc(adapter, tsize, 3208 &txr->txdma, BUS_DMA_NOWAIT)) { 3209 device_printf(dev, 3210 "Unable to allocate TX Descriptor memory\n"); 3211 error = ENOMEM; 3212 goto err_tx_desc; 3213 } 3214 txr->tx_base = (struct e1000_tx_desc *)txr->txdma.dma_vaddr; 3215 bzero((void *)txr->tx_base, tsize); 3216 3217 if (em_allocate_transmit_buffers(txr)) { 3218 device_printf(dev, 3219 "Critical Failure setting up transmit buffers\n"); 3220 error = ENOMEM; 3221 goto err_tx_desc; 3222 } 3223 #if __FreeBSD_version >= 800000 3224 /* Allocate a buf ring */ 3225 txr->br = buf_ring_alloc(4096, M_DEVBUF, 3226 M_WAITOK, &txr->tx_mtx); 3227 #endif 3228 } 3229 3230 /* 3231 * Next the RX queues... 3232 */ 3233 rsize = roundup2(adapter->num_rx_desc * 3234 sizeof(struct e1000_rx_desc), EM_DBA_ALIGN); 3235 for (int i = 0; i < adapter->num_queues; i++, rxconf++) { 3236 rxr = &adapter->rx_rings[i]; 3237 rxr->adapter = adapter; 3238 rxr->me = i; 3239 3240 /* Initialize the RX lock */ 3241 snprintf(rxr->mtx_name, sizeof(rxr->mtx_name), "%s:rx(%d)", 3242 device_get_nameunit(dev), txr->me); 3243 mtx_init(&rxr->rx_mtx, rxr->mtx_name, NULL, MTX_DEF); 3244 3245 if (em_dma_malloc(adapter, rsize, 3246 &rxr->rxdma, BUS_DMA_NOWAIT)) { 3247 device_printf(dev, 3248 "Unable to allocate RxDescriptor memory\n"); 3249 error = ENOMEM; 3250 goto err_rx_desc; 3251 } 3252 rxr->rx_base = (struct e1000_rx_desc *)rxr->rxdma.dma_vaddr; 3253 bzero((void *)rxr->rx_base, rsize); 3254 3255 /* Allocate receive buffers for the ring*/ 3256 if (em_allocate_receive_buffers(rxr)) { 3257 device_printf(dev, 3258 "Critical Failure setting up receive buffers\n"); 3259 error = ENOMEM; 3260 goto err_rx_desc; 3261 } 3262 } 3263 3264 return (0); 3265 3266 err_rx_desc: 3267 for (rxr = adapter->rx_rings; rxconf > 0; rxr++, rxconf--) 3268 em_dma_free(adapter, &rxr->rxdma); 3269 err_tx_desc: 3270 for (txr = adapter->tx_rings; txconf > 0; txr++, txconf--) 3271 em_dma_free(adapter, &txr->txdma); 3272 free(adapter->rx_rings, M_DEVBUF); 3273 rx_fail: 3274 #if __FreeBSD_version >= 800000 3275 buf_ring_free(txr->br, M_DEVBUF); 3276 #endif 3277 free(adapter->tx_rings, M_DEVBUF); 3278 fail: 3279 return (error); 3280 } 3281 3282 3283 /********************************************************************* 3284 * 3285 * Allocate memory for tx_buffer structures. The tx_buffer stores all 3286 * the information needed to transmit a packet on the wire. This is 3287 * called only once at attach, setup is done every reset. 3288 * 3289 **********************************************************************/ 3290 static int 3291 em_allocate_transmit_buffers(struct tx_ring *txr) 3292 { 3293 struct adapter *adapter = txr->adapter; 3294 device_t dev = adapter->dev; 3295 struct em_buffer *txbuf; 3296 int error, i; 3297 3298 /* 3299 * Setup DMA descriptor areas. 3300 */ 3301 if ((error = bus_dma_tag_create(bus_get_dma_tag(dev), 3302 1, 0, /* alignment, bounds */ 3303 BUS_SPACE_MAXADDR, /* lowaddr */ 3304 BUS_SPACE_MAXADDR, /* highaddr */ 3305 NULL, NULL, /* filter, filterarg */ 3306 EM_TSO_SIZE, /* maxsize */ 3307 EM_MAX_SCATTER, /* nsegments */ 3308 PAGE_SIZE, /* maxsegsize */ 3309 0, /* flags */ 3310 NULL, /* lockfunc */ 3311 NULL, /* lockfuncarg */ 3312 &txr->txtag))) { 3313 device_printf(dev,"Unable to allocate TX DMA tag\n"); 3314 goto fail; 3315 } 3316 3317 if (!(txr->tx_buffers = 3318 (struct em_buffer *) malloc(sizeof(struct em_buffer) * 3319 adapter->num_tx_desc, M_DEVBUF, M_NOWAIT | M_ZERO))) { 3320 device_printf(dev, "Unable to allocate tx_buffer memory\n"); 3321 error = ENOMEM; 3322 goto fail; 3323 } 3324 3325 /* Create the descriptor buffer dma maps */ 3326 txbuf = txr->tx_buffers; 3327 for (i = 0; i < adapter->num_tx_desc; i++, txbuf++) { 3328 error = bus_dmamap_create(txr->txtag, 0, &txbuf->map); 3329 if (error != 0) { 3330 device_printf(dev, "Unable to create TX DMA map\n"); 3331 goto fail; 3332 } 3333 } 3334 3335 return 0; 3336 fail: 3337 /* We free all, it handles case where we are in the middle */ 3338 em_free_transmit_structures(adapter); 3339 return (error); 3340 } 3341 3342 /********************************************************************* 3343 * 3344 * Initialize a transmit ring. 3345 * 3346 **********************************************************************/ 3347 static void 3348 em_setup_transmit_ring(struct tx_ring *txr) 3349 { 3350 struct adapter *adapter = txr->adapter; 3351 struct em_buffer *txbuf; 3352 int i; 3353 #ifdef DEV_NETMAP 3354 struct netmap_adapter *na = NA(adapter->ifp); 3355 struct netmap_slot *slot; 3356 #endif /* DEV_NETMAP */ 3357 3358 /* Clear the old descriptor contents */ 3359 EM_TX_LOCK(txr); 3360 #ifdef DEV_NETMAP 3361 slot = netmap_reset(na, NR_TX, txr->me, 0); 3362 #endif /* DEV_NETMAP */ 3363 3364 bzero((void *)txr->tx_base, 3365 (sizeof(struct e1000_tx_desc)) * adapter->num_tx_desc); 3366 /* Reset indices */ 3367 txr->next_avail_desc = 0; 3368 txr->next_to_clean = 0; 3369 3370 /* Free any existing tx buffers. */ 3371 txbuf = txr->tx_buffers; 3372 for (i = 0; i < adapter->num_tx_desc; i++, txbuf++) { 3373 if (txbuf->m_head != NULL) { 3374 bus_dmamap_sync(txr->txtag, txbuf->map, 3375 BUS_DMASYNC_POSTWRITE); 3376 bus_dmamap_unload(txr->txtag, txbuf->map); 3377 m_freem(txbuf->m_head); 3378 txbuf->m_head = NULL; 3379 } 3380 #ifdef DEV_NETMAP 3381 if (slot) { 3382 int si = netmap_idx_n2k(&na->tx_rings[txr->me], i); 3383 uint64_t paddr; 3384 void *addr; 3385 3386 addr = PNMB(slot + si, &paddr); 3387 txr->tx_base[i].buffer_addr = htole64(paddr); 3388 /* reload the map for netmap mode */ 3389 netmap_load_map(txr->txtag, txbuf->map, addr); 3390 } 3391 #endif /* DEV_NETMAP */ 3392 3393 /* clear the watch index */ 3394 txbuf->next_eop = -1; 3395 } 3396 3397 /* Set number of descriptors available */ 3398 txr->tx_avail = adapter->num_tx_desc; 3399 txr->queue_status = EM_QUEUE_IDLE; 3400 3401 /* Clear checksum offload context. */ 3402 txr->last_hw_offload = 0; 3403 txr->last_hw_ipcss = 0; 3404 txr->last_hw_ipcso = 0; 3405 txr->last_hw_tucss = 0; 3406 txr->last_hw_tucso = 0; 3407 3408 bus_dmamap_sync(txr->txdma.dma_tag, txr->txdma.dma_map, 3409 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 3410 EM_TX_UNLOCK(txr); 3411 } 3412 3413 /********************************************************************* 3414 * 3415 * Initialize all transmit rings. 3416 * 3417 **********************************************************************/ 3418 static void 3419 em_setup_transmit_structures(struct adapter *adapter) 3420 { 3421 struct tx_ring *txr = adapter->tx_rings; 3422 3423 for (int i = 0; i < adapter->num_queues; i++, txr++) 3424 em_setup_transmit_ring(txr); 3425 3426 return; 3427 } 3428 3429 /********************************************************************* 3430 * 3431 * Enable transmit unit. 3432 * 3433 **********************************************************************/ 3434 static void 3435 em_initialize_transmit_unit(struct adapter *adapter) 3436 { 3437 struct tx_ring *txr = adapter->tx_rings; 3438 struct e1000_hw *hw = &adapter->hw; 3439 u32 tctl, tarc, tipg = 0; 3440 3441 INIT_DEBUGOUT("em_initialize_transmit_unit: begin"); 3442 3443 for (int i = 0; i < adapter->num_queues; i++, txr++) { 3444 u64 bus_addr = txr->txdma.dma_paddr; 3445 /* Base and Len of TX Ring */ 3446 E1000_WRITE_REG(hw, E1000_TDLEN(i), 3447 adapter->num_tx_desc * sizeof(struct e1000_tx_desc)); 3448 E1000_WRITE_REG(hw, E1000_TDBAH(i), 3449 (u32)(bus_addr >> 32)); 3450 E1000_WRITE_REG(hw, E1000_TDBAL(i), 3451 (u32)bus_addr); 3452 /* Init the HEAD/TAIL indices */ 3453 E1000_WRITE_REG(hw, E1000_TDT(i), 0); 3454 E1000_WRITE_REG(hw, E1000_TDH(i), 0); 3455 3456 HW_DEBUGOUT2("Base = %x, Length = %x\n", 3457 E1000_READ_REG(&adapter->hw, E1000_TDBAL(i)), 3458 E1000_READ_REG(&adapter->hw, E1000_TDLEN(i))); 3459 3460 txr->queue_status = EM_QUEUE_IDLE; 3461 } 3462 3463 /* Set the default values for the Tx Inter Packet Gap timer */ 3464 switch (adapter->hw.mac.type) { 3465 case e1000_80003es2lan: 3466 tipg = DEFAULT_82543_TIPG_IPGR1; 3467 tipg |= DEFAULT_80003ES2LAN_TIPG_IPGR2 << 3468 E1000_TIPG_IPGR2_SHIFT; 3469 break; 3470 default: 3471 if ((adapter->hw.phy.media_type == e1000_media_type_fiber) || 3472 (adapter->hw.phy.media_type == 3473 e1000_media_type_internal_serdes)) 3474 tipg = DEFAULT_82543_TIPG_IPGT_FIBER; 3475 else 3476 tipg = DEFAULT_82543_TIPG_IPGT_COPPER; 3477 tipg |= DEFAULT_82543_TIPG_IPGR1 << E1000_TIPG_IPGR1_SHIFT; 3478 tipg |= DEFAULT_82543_TIPG_IPGR2 << E1000_TIPG_IPGR2_SHIFT; 3479 } 3480 3481 E1000_WRITE_REG(&adapter->hw, E1000_TIPG, tipg); 3482 E1000_WRITE_REG(&adapter->hw, E1000_TIDV, adapter->tx_int_delay.value); 3483 3484 if(adapter->hw.mac.type >= e1000_82540) 3485 E1000_WRITE_REG(&adapter->hw, E1000_TADV, 3486 adapter->tx_abs_int_delay.value); 3487 3488 if ((adapter->hw.mac.type == e1000_82571) || 3489 (adapter->hw.mac.type == e1000_82572)) { 3490 tarc = E1000_READ_REG(&adapter->hw, E1000_TARC(0)); 3491 tarc |= SPEED_MODE_BIT; 3492 E1000_WRITE_REG(&adapter->hw, E1000_TARC(0), tarc); 3493 } else if (adapter->hw.mac.type == e1000_80003es2lan) { 3494 tarc = E1000_READ_REG(&adapter->hw, E1000_TARC(0)); 3495 tarc |= 1; 3496 E1000_WRITE_REG(&adapter->hw, E1000_TARC(0), tarc); 3497 tarc = E1000_READ_REG(&adapter->hw, E1000_TARC(1)); 3498 tarc |= 1; 3499 E1000_WRITE_REG(&adapter->hw, E1000_TARC(1), tarc); 3500 } 3501 3502 adapter->txd_cmd = E1000_TXD_CMD_IFCS; 3503 if (adapter->tx_int_delay.value > 0) 3504 adapter->txd_cmd |= E1000_TXD_CMD_IDE; 3505 3506 /* Program the Transmit Control Register */ 3507 tctl = E1000_READ_REG(&adapter->hw, E1000_TCTL); 3508 tctl &= ~E1000_TCTL_CT; 3509 tctl |= (E1000_TCTL_PSP | E1000_TCTL_RTLC | E1000_TCTL_EN | 3510 (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT)); 3511 3512 if (adapter->hw.mac.type >= e1000_82571) 3513 tctl |= E1000_TCTL_MULR; 3514 3515 /* This write will effectively turn on the transmit unit. */ 3516 E1000_WRITE_REG(&adapter->hw, E1000_TCTL, tctl); 3517 3518 } 3519 3520 3521 /********************************************************************* 3522 * 3523 * Free all transmit rings. 3524 * 3525 **********************************************************************/ 3526 static void 3527 em_free_transmit_structures(struct adapter *adapter) 3528 { 3529 struct tx_ring *txr = adapter->tx_rings; 3530 3531 for (int i = 0; i < adapter->num_queues; i++, txr++) { 3532 EM_TX_LOCK(txr); 3533 em_free_transmit_buffers(txr); 3534 em_dma_free(adapter, &txr->txdma); 3535 EM_TX_UNLOCK(txr); 3536 EM_TX_LOCK_DESTROY(txr); 3537 } 3538 3539 free(adapter->tx_rings, M_DEVBUF); 3540 } 3541 3542 /********************************************************************* 3543 * 3544 * Free transmit ring related data structures. 3545 * 3546 **********************************************************************/ 3547 static void 3548 em_free_transmit_buffers(struct tx_ring *txr) 3549 { 3550 struct adapter *adapter = txr->adapter; 3551 struct em_buffer *txbuf; 3552 3553 INIT_DEBUGOUT("free_transmit_ring: begin"); 3554 3555 if (txr->tx_buffers == NULL) 3556 return; 3557 3558 for (int i = 0; i < adapter->num_tx_desc; i++) { 3559 txbuf = &txr->tx_buffers[i]; 3560 if (txbuf->m_head != NULL) { 3561 bus_dmamap_sync(txr->txtag, txbuf->map, 3562 BUS_DMASYNC_POSTWRITE); 3563 bus_dmamap_unload(txr->txtag, 3564 txbuf->map); 3565 m_freem(txbuf->m_head); 3566 txbuf->m_head = NULL; 3567 if (txbuf->map != NULL) { 3568 bus_dmamap_destroy(txr->txtag, 3569 txbuf->map); 3570 txbuf->map = NULL; 3571 } 3572 } else if (txbuf->map != NULL) { 3573 bus_dmamap_unload(txr->txtag, 3574 txbuf->map); 3575 bus_dmamap_destroy(txr->txtag, 3576 txbuf->map); 3577 txbuf->map = NULL; 3578 } 3579 } 3580 #if __FreeBSD_version >= 800000 3581 if (txr->br != NULL) 3582 buf_ring_free(txr->br, M_DEVBUF); 3583 #endif 3584 if (txr->tx_buffers != NULL) { 3585 free(txr->tx_buffers, M_DEVBUF); 3586 txr->tx_buffers = NULL; 3587 } 3588 if (txr->txtag != NULL) { 3589 bus_dma_tag_destroy(txr->txtag); 3590 txr->txtag = NULL; 3591 } 3592 return; 3593 } 3594 3595 3596 /********************************************************************* 3597 * The offload context is protocol specific (TCP/UDP) and thus 3598 * only needs to be set when the protocol changes. The occasion 3599 * of a context change can be a performance detriment, and 3600 * might be better just disabled. The reason arises in the way 3601 * in which the controller supports pipelined requests from the 3602 * Tx data DMA. Up to four requests can be pipelined, and they may 3603 * belong to the same packet or to multiple packets. However all 3604 * requests for one packet are issued before a request is issued 3605 * for a subsequent packet and if a request for the next packet 3606 * requires a context change, that request will be stalled 3607 * until the previous request completes. This means setting up 3608 * a new context effectively disables pipelined Tx data DMA which 3609 * in turn greatly slow down performance to send small sized 3610 * frames. 3611 **********************************************************************/ 3612 static void 3613 em_transmit_checksum_setup(struct tx_ring *txr, struct mbuf *mp, int ip_off, 3614 struct ip *ip, u32 *txd_upper, u32 *txd_lower) 3615 { 3616 struct adapter *adapter = txr->adapter; 3617 struct e1000_context_desc *TXD = NULL; 3618 struct em_buffer *tx_buffer; 3619 int cur, hdr_len; 3620 u32 cmd = 0; 3621 u16 offload = 0; 3622 u8 ipcso, ipcss, tucso, tucss; 3623 3624 ipcss = ipcso = tucss = tucso = 0; 3625 hdr_len = ip_off + (ip->ip_hl << 2); 3626 cur = txr->next_avail_desc; 3627 3628 /* Setup of IP header checksum. */ 3629 if (mp->m_pkthdr.csum_flags & CSUM_IP) { 3630 *txd_upper |= E1000_TXD_POPTS_IXSM << 8; 3631 offload |= CSUM_IP; 3632 ipcss = ip_off; 3633 ipcso = ip_off + offsetof(struct ip, ip_sum); 3634 /* 3635 * Start offset for header checksum calculation. 3636 * End offset for header checksum calculation. 3637 * Offset of place to put the checksum. 3638 */ 3639 TXD = (struct e1000_context_desc *)&txr->tx_base[cur]; 3640 TXD->lower_setup.ip_fields.ipcss = ipcss; 3641 TXD->lower_setup.ip_fields.ipcse = htole16(hdr_len); 3642 TXD->lower_setup.ip_fields.ipcso = ipcso; 3643 cmd |= E1000_TXD_CMD_IP; 3644 } 3645 3646 if (mp->m_pkthdr.csum_flags & CSUM_TCP) { 3647 *txd_lower = E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D; 3648 *txd_upper |= E1000_TXD_POPTS_TXSM << 8; 3649 offload |= CSUM_TCP; 3650 tucss = hdr_len; 3651 tucso = hdr_len + offsetof(struct tcphdr, th_sum); 3652 /* 3653 * Setting up new checksum offload context for every frames 3654 * takes a lot of processing time for hardware. This also 3655 * reduces performance a lot for small sized frames so avoid 3656 * it if driver can use previously configured checksum 3657 * offload context. 3658 */ 3659 if (txr->last_hw_offload == offload) { 3660 if (offload & CSUM_IP) { 3661 if (txr->last_hw_ipcss == ipcss && 3662 txr->last_hw_ipcso == ipcso && 3663 txr->last_hw_tucss == tucss && 3664 txr->last_hw_tucso == tucso) 3665 return; 3666 } else { 3667 if (txr->last_hw_tucss == tucss && 3668 txr->last_hw_tucso == tucso) 3669 return; 3670 } 3671 } 3672 txr->last_hw_offload = offload; 3673 txr->last_hw_tucss = tucss; 3674 txr->last_hw_tucso = tucso; 3675 /* 3676 * Start offset for payload checksum calculation. 3677 * End offset for payload checksum calculation. 3678 * Offset of place to put the checksum. 3679 */ 3680 TXD = (struct e1000_context_desc *)&txr->tx_base[cur]; 3681 TXD->upper_setup.tcp_fields.tucss = hdr_len; 3682 TXD->upper_setup.tcp_fields.tucse = htole16(0); 3683 TXD->upper_setup.tcp_fields.tucso = tucso; 3684 cmd |= E1000_TXD_CMD_TCP; 3685 } else if (mp->m_pkthdr.csum_flags & CSUM_UDP) { 3686 *txd_lower = E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D; 3687 *txd_upper |= E1000_TXD_POPTS_TXSM << 8; 3688 tucss = hdr_len; 3689 tucso = hdr_len + offsetof(struct udphdr, uh_sum); 3690 /* 3691 * Setting up new checksum offload context for every frames 3692 * takes a lot of processing time for hardware. This also 3693 * reduces performance a lot for small sized frames so avoid 3694 * it if driver can use previously configured checksum 3695 * offload context. 3696 */ 3697 if (txr->last_hw_offload == offload) { 3698 if (offload & CSUM_IP) { 3699 if (txr->last_hw_ipcss == ipcss && 3700 txr->last_hw_ipcso == ipcso && 3701 txr->last_hw_tucss == tucss && 3702 txr->last_hw_tucso == tucso) 3703 return; 3704 } else { 3705 if (txr->last_hw_tucss == tucss && 3706 txr->last_hw_tucso == tucso) 3707 return; 3708 } 3709 } 3710 txr->last_hw_offload = offload; 3711 txr->last_hw_tucss = tucss; 3712 txr->last_hw_tucso = tucso; 3713 /* 3714 * Start offset for header checksum calculation. 3715 * End offset for header checksum calculation. 3716 * Offset of place to put the checksum. 3717 */ 3718 TXD = (struct e1000_context_desc *)&txr->tx_base[cur]; 3719 TXD->upper_setup.tcp_fields.tucss = tucss; 3720 TXD->upper_setup.tcp_fields.tucse = htole16(0); 3721 TXD->upper_setup.tcp_fields.tucso = tucso; 3722 } 3723 3724 if (offload & CSUM_IP) { 3725 txr->last_hw_ipcss = ipcss; 3726 txr->last_hw_ipcso = ipcso; 3727 } 3728 3729 TXD->tcp_seg_setup.data = htole32(0); 3730 TXD->cmd_and_length = 3731 htole32(adapter->txd_cmd | E1000_TXD_CMD_DEXT | cmd); 3732 tx_buffer = &txr->tx_buffers[cur]; 3733 tx_buffer->m_head = NULL; 3734 tx_buffer->next_eop = -1; 3735 3736 if (++cur == adapter->num_tx_desc) 3737 cur = 0; 3738 3739 txr->tx_avail--; 3740 txr->next_avail_desc = cur; 3741 } 3742 3743 3744 /********************************************************************** 3745 * 3746 * Setup work for hardware segmentation offload (TSO) 3747 * 3748 **********************************************************************/ 3749 static void 3750 em_tso_setup(struct tx_ring *txr, struct mbuf *mp, int ip_off, 3751 struct ip *ip, struct tcphdr *tp, u32 *txd_upper, u32 *txd_lower) 3752 { 3753 struct adapter *adapter = txr->adapter; 3754 struct e1000_context_desc *TXD; 3755 struct em_buffer *tx_buffer; 3756 int cur, hdr_len; 3757 3758 /* 3759 * In theory we can use the same TSO context if and only if 3760 * frame is the same type(IP/TCP) and the same MSS. However 3761 * checking whether a frame has the same IP/TCP structure is 3762 * hard thing so just ignore that and always restablish a 3763 * new TSO context. 3764 */ 3765 hdr_len = ip_off + (ip->ip_hl << 2) + (tp->th_off << 2); 3766 *txd_lower = (E1000_TXD_CMD_DEXT | /* Extended descr type */ 3767 E1000_TXD_DTYP_D | /* Data descr type */ 3768 E1000_TXD_CMD_TSE); /* Do TSE on this packet */ 3769 3770 /* IP and/or TCP header checksum calculation and insertion. */ 3771 *txd_upper = (E1000_TXD_POPTS_IXSM | E1000_TXD_POPTS_TXSM) << 8; 3772 3773 cur = txr->next_avail_desc; 3774 tx_buffer = &txr->tx_buffers[cur]; 3775 TXD = (struct e1000_context_desc *) &txr->tx_base[cur]; 3776 3777 /* 3778 * Start offset for header checksum calculation. 3779 * End offset for header checksum calculation. 3780 * Offset of place put the checksum. 3781 */ 3782 TXD->lower_setup.ip_fields.ipcss = ip_off; 3783 TXD->lower_setup.ip_fields.ipcse = 3784 htole16(ip_off + (ip->ip_hl << 2) - 1); 3785 TXD->lower_setup.ip_fields.ipcso = ip_off + offsetof(struct ip, ip_sum); 3786 /* 3787 * Start offset for payload checksum calculation. 3788 * End offset for payload checksum calculation. 3789 * Offset of place to put the checksum. 3790 */ 3791 TXD->upper_setup.tcp_fields.tucss = ip_off + (ip->ip_hl << 2); 3792 TXD->upper_setup.tcp_fields.tucse = 0; 3793 TXD->upper_setup.tcp_fields.tucso = 3794 ip_off + (ip->ip_hl << 2) + offsetof(struct tcphdr, th_sum); 3795 /* 3796 * Payload size per packet w/o any headers. 3797 * Length of all headers up to payload. 3798 */ 3799 TXD->tcp_seg_setup.fields.mss = htole16(mp->m_pkthdr.tso_segsz); 3800 TXD->tcp_seg_setup.fields.hdr_len = hdr_len; 3801 3802 TXD->cmd_and_length = htole32(adapter->txd_cmd | 3803 E1000_TXD_CMD_DEXT | /* Extended descr */ 3804 E1000_TXD_CMD_TSE | /* TSE context */ 3805 E1000_TXD_CMD_IP | /* Do IP csum */ 3806 E1000_TXD_CMD_TCP | /* Do TCP checksum */ 3807 (mp->m_pkthdr.len - (hdr_len))); /* Total len */ 3808 3809 tx_buffer->m_head = NULL; 3810 tx_buffer->next_eop = -1; 3811 3812 if (++cur == adapter->num_tx_desc) 3813 cur = 0; 3814 3815 txr->tx_avail--; 3816 txr->next_avail_desc = cur; 3817 txr->tx_tso = TRUE; 3818 } 3819 3820 3821 /********************************************************************** 3822 * 3823 * Examine each tx_buffer in the used queue. If the hardware is done 3824 * processing the packet then free associated resources. The 3825 * tx_buffer is put back on the free queue. 3826 * 3827 **********************************************************************/ 3828 static void 3829 em_txeof(struct tx_ring *txr) 3830 { 3831 struct adapter *adapter = txr->adapter; 3832 int first, last, done, processed; 3833 struct em_buffer *tx_buffer; 3834 struct e1000_tx_desc *tx_desc, *eop_desc; 3835 struct ifnet *ifp = adapter->ifp; 3836 3837 EM_TX_LOCK_ASSERT(txr); 3838 #ifdef DEV_NETMAP 3839 if (netmap_tx_irq(ifp, txr->me)) 3840 return; 3841 #endif /* DEV_NETMAP */ 3842 3843 /* No work, make sure watchdog is off */ 3844 if (txr->tx_avail == adapter->num_tx_desc) { 3845 txr->queue_status = EM_QUEUE_IDLE; 3846 return; 3847 } 3848 3849 processed = 0; 3850 first = txr->next_to_clean; 3851 tx_desc = &txr->tx_base[first]; 3852 tx_buffer = &txr->tx_buffers[first]; 3853 last = tx_buffer->next_eop; 3854 eop_desc = &txr->tx_base[last]; 3855 3856 /* 3857 * What this does is get the index of the 3858 * first descriptor AFTER the EOP of the 3859 * first packet, that way we can do the 3860 * simple comparison on the inner while loop. 3861 */ 3862 if (++last == adapter->num_tx_desc) 3863 last = 0; 3864 done = last; 3865 3866 bus_dmamap_sync(txr->txdma.dma_tag, txr->txdma.dma_map, 3867 BUS_DMASYNC_POSTREAD); 3868 3869 while (eop_desc->upper.fields.status & E1000_TXD_STAT_DD) { 3870 /* We clean the range of the packet */ 3871 while (first != done) { 3872 tx_desc->upper.data = 0; 3873 tx_desc->lower.data = 0; 3874 tx_desc->buffer_addr = 0; 3875 ++txr->tx_avail; 3876 ++processed; 3877 3878 if (tx_buffer->m_head) { 3879 bus_dmamap_sync(txr->txtag, 3880 tx_buffer->map, 3881 BUS_DMASYNC_POSTWRITE); 3882 bus_dmamap_unload(txr->txtag, 3883 tx_buffer->map); 3884 m_freem(tx_buffer->m_head); 3885 tx_buffer->m_head = NULL; 3886 } 3887 tx_buffer->next_eop = -1; 3888 txr->watchdog_time = ticks; 3889 3890 if (++first == adapter->num_tx_desc) 3891 first = 0; 3892 3893 tx_buffer = &txr->tx_buffers[first]; 3894 tx_desc = &txr->tx_base[first]; 3895 } 3896 ++ifp->if_opackets; 3897 /* See if we can continue to the next packet */ 3898 last = tx_buffer->next_eop; 3899 if (last != -1) { 3900 eop_desc = &txr->tx_base[last]; 3901 /* Get new done point */ 3902 if (++last == adapter->num_tx_desc) last = 0; 3903 done = last; 3904 } else 3905 break; 3906 } 3907 bus_dmamap_sync(txr->txdma.dma_tag, txr->txdma.dma_map, 3908 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 3909 3910 txr->next_to_clean = first; 3911 3912 /* 3913 ** Watchdog calculation, we know there's 3914 ** work outstanding or the first return 3915 ** would have been taken, so none processed 3916 ** for too long indicates a hang. local timer 3917 ** will examine this and do a reset if needed. 3918 */ 3919 if ((!processed) && ((ticks - txr->watchdog_time) > EM_WATCHDOG)) 3920 txr->queue_status = EM_QUEUE_HUNG; 3921 3922 /* 3923 * If we have a minimum free, clear IFF_DRV_OACTIVE 3924 * to tell the stack that it is OK to send packets. 3925 * Notice that all writes of OACTIVE happen under the 3926 * TX lock which, with a single queue, guarantees 3927 * sanity. 3928 */ 3929 if (txr->tx_avail >= EM_MAX_SCATTER) 3930 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 3931 3932 /* Disable watchdog if all clean */ 3933 if (txr->tx_avail == adapter->num_tx_desc) { 3934 txr->queue_status = EM_QUEUE_IDLE; 3935 } 3936 } 3937 3938 3939 /********************************************************************* 3940 * 3941 * Refresh RX descriptor mbufs from system mbuf buffer pool. 3942 * 3943 **********************************************************************/ 3944 static void 3945 em_refresh_mbufs(struct rx_ring *rxr, int limit) 3946 { 3947 struct adapter *adapter = rxr->adapter; 3948 struct mbuf *m; 3949 bus_dma_segment_t segs[1]; 3950 struct em_buffer *rxbuf; 3951 int i, j, error, nsegs; 3952 bool cleaned = FALSE; 3953 3954 i = j = rxr->next_to_refresh; 3955 /* 3956 ** Get one descriptor beyond 3957 ** our work mark to control 3958 ** the loop. 3959 */ 3960 if (++j == adapter->num_rx_desc) 3961 j = 0; 3962 3963 while (j != limit) { 3964 rxbuf = &rxr->rx_buffers[i]; 3965 if (rxbuf->m_head == NULL) { 3966 m = m_getjcl(M_NOWAIT, MT_DATA, 3967 M_PKTHDR, adapter->rx_mbuf_sz); 3968 /* 3969 ** If we have a temporary resource shortage 3970 ** that causes a failure, just abort refresh 3971 ** for now, we will return to this point when 3972 ** reinvoked from em_rxeof. 3973 */ 3974 if (m == NULL) 3975 goto update; 3976 } else 3977 m = rxbuf->m_head; 3978 3979 m->m_len = m->m_pkthdr.len = adapter->rx_mbuf_sz; 3980 m->m_flags |= M_PKTHDR; 3981 m->m_data = m->m_ext.ext_buf; 3982 3983 /* Use bus_dma machinery to setup the memory mapping */ 3984 error = bus_dmamap_load_mbuf_sg(rxr->rxtag, rxbuf->map, 3985 m, segs, &nsegs, BUS_DMA_NOWAIT); 3986 if (error != 0) { 3987 printf("Refresh mbufs: hdr dmamap load" 3988 " failure - %d\n", error); 3989 m_free(m); 3990 rxbuf->m_head = NULL; 3991 goto update; 3992 } 3993 rxbuf->m_head = m; 3994 bus_dmamap_sync(rxr->rxtag, 3995 rxbuf->map, BUS_DMASYNC_PREREAD); 3996 rxr->rx_base[i].buffer_addr = htole64(segs[0].ds_addr); 3997 cleaned = TRUE; 3998 3999 i = j; /* Next is precalulated for us */ 4000 rxr->next_to_refresh = i; 4001 /* Calculate next controlling index */ 4002 if (++j == adapter->num_rx_desc) 4003 j = 0; 4004 } 4005 update: 4006 /* 4007 ** Update the tail pointer only if, 4008 ** and as far as we have refreshed. 4009 */ 4010 if (cleaned) 4011 E1000_WRITE_REG(&adapter->hw, 4012 E1000_RDT(rxr->me), rxr->next_to_refresh); 4013 4014 return; 4015 } 4016 4017 4018 /********************************************************************* 4019 * 4020 * Allocate memory for rx_buffer structures. Since we use one 4021 * rx_buffer per received packet, the maximum number of rx_buffer's 4022 * that we'll need is equal to the number of receive descriptors 4023 * that we've allocated. 4024 * 4025 **********************************************************************/ 4026 static int 4027 em_allocate_receive_buffers(struct rx_ring *rxr) 4028 { 4029 struct adapter *adapter = rxr->adapter; 4030 device_t dev = adapter->dev; 4031 struct em_buffer *rxbuf; 4032 int error; 4033 4034 rxr->rx_buffers = malloc(sizeof(struct em_buffer) * 4035 adapter->num_rx_desc, M_DEVBUF, M_NOWAIT | M_ZERO); 4036 if (rxr->rx_buffers == NULL) { 4037 device_printf(dev, "Unable to allocate rx_buffer memory\n"); 4038 return (ENOMEM); 4039 } 4040 4041 error = bus_dma_tag_create(bus_get_dma_tag(dev), /* parent */ 4042 1, 0, /* alignment, bounds */ 4043 BUS_SPACE_MAXADDR, /* lowaddr */ 4044 BUS_SPACE_MAXADDR, /* highaddr */ 4045 NULL, NULL, /* filter, filterarg */ 4046 MJUM9BYTES, /* maxsize */ 4047 1, /* nsegments */ 4048 MJUM9BYTES, /* maxsegsize */ 4049 0, /* flags */ 4050 NULL, /* lockfunc */ 4051 NULL, /* lockarg */ 4052 &rxr->rxtag); 4053 if (error) { 4054 device_printf(dev, "%s: bus_dma_tag_create failed %d\n", 4055 __func__, error); 4056 goto fail; 4057 } 4058 4059 rxbuf = rxr->rx_buffers; 4060 for (int i = 0; i < adapter->num_rx_desc; i++, rxbuf++) { 4061 rxbuf = &rxr->rx_buffers[i]; 4062 error = bus_dmamap_create(rxr->rxtag, 0, &rxbuf->map); 4063 if (error) { 4064 device_printf(dev, "%s: bus_dmamap_create failed: %d\n", 4065 __func__, error); 4066 goto fail; 4067 } 4068 } 4069 4070 return (0); 4071 4072 fail: 4073 em_free_receive_structures(adapter); 4074 return (error); 4075 } 4076 4077 4078 /********************************************************************* 4079 * 4080 * Initialize a receive ring and its buffers. 4081 * 4082 **********************************************************************/ 4083 static int 4084 em_setup_receive_ring(struct rx_ring *rxr) 4085 { 4086 struct adapter *adapter = rxr->adapter; 4087 struct em_buffer *rxbuf; 4088 bus_dma_segment_t seg[1]; 4089 int rsize, nsegs, error = 0; 4090 #ifdef DEV_NETMAP 4091 struct netmap_adapter *na = NA(adapter->ifp); 4092 struct netmap_slot *slot; 4093 #endif 4094 4095 4096 /* Clear the ring contents */ 4097 EM_RX_LOCK(rxr); 4098 rsize = roundup2(adapter->num_rx_desc * 4099 sizeof(struct e1000_rx_desc), EM_DBA_ALIGN); 4100 bzero((void *)rxr->rx_base, rsize); 4101 #ifdef DEV_NETMAP 4102 slot = netmap_reset(na, NR_RX, rxr->me, 0); 4103 #endif 4104 4105 /* 4106 ** Free current RX buffer structs and their mbufs 4107 */ 4108 for (int i = 0; i < adapter->num_rx_desc; i++) { 4109 rxbuf = &rxr->rx_buffers[i]; 4110 if (rxbuf->m_head != NULL) { 4111 bus_dmamap_sync(rxr->rxtag, rxbuf->map, 4112 BUS_DMASYNC_POSTREAD); 4113 bus_dmamap_unload(rxr->rxtag, rxbuf->map); 4114 m_freem(rxbuf->m_head); 4115 rxbuf->m_head = NULL; /* mark as freed */ 4116 } 4117 } 4118 4119 /* Now replenish the mbufs */ 4120 for (int j = 0; j != adapter->num_rx_desc; ++j) { 4121 rxbuf = &rxr->rx_buffers[j]; 4122 #ifdef DEV_NETMAP 4123 if (slot) { 4124 int si = netmap_idx_n2k(&na->rx_rings[rxr->me], j); 4125 uint64_t paddr; 4126 void *addr; 4127 4128 addr = PNMB(slot + si, &paddr); 4129 netmap_load_map(rxr->rxtag, rxbuf->map, addr); 4130 /* Update descriptor */ 4131 rxr->rx_base[j].buffer_addr = htole64(paddr); 4132 continue; 4133 } 4134 #endif /* DEV_NETMAP */ 4135 rxbuf->m_head = m_getjcl(M_NOWAIT, MT_DATA, 4136 M_PKTHDR, adapter->rx_mbuf_sz); 4137 if (rxbuf->m_head == NULL) { 4138 error = ENOBUFS; 4139 goto fail; 4140 } 4141 rxbuf->m_head->m_len = adapter->rx_mbuf_sz; 4142 rxbuf->m_head->m_flags &= ~M_HASFCS; /* we strip it */ 4143 rxbuf->m_head->m_pkthdr.len = adapter->rx_mbuf_sz; 4144 4145 /* Get the memory mapping */ 4146 error = bus_dmamap_load_mbuf_sg(rxr->rxtag, 4147 rxbuf->map, rxbuf->m_head, seg, 4148 &nsegs, BUS_DMA_NOWAIT); 4149 if (error != 0) { 4150 m_freem(rxbuf->m_head); 4151 rxbuf->m_head = NULL; 4152 goto fail; 4153 } 4154 bus_dmamap_sync(rxr->rxtag, 4155 rxbuf->map, BUS_DMASYNC_PREREAD); 4156 4157 /* Update descriptor */ 4158 rxr->rx_base[j].buffer_addr = htole64(seg[0].ds_addr); 4159 } 4160 rxr->next_to_check = 0; 4161 rxr->next_to_refresh = 0; 4162 bus_dmamap_sync(rxr->rxdma.dma_tag, rxr->rxdma.dma_map, 4163 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 4164 4165 fail: 4166 EM_RX_UNLOCK(rxr); 4167 return (error); 4168 } 4169 4170 /********************************************************************* 4171 * 4172 * Initialize all receive rings. 4173 * 4174 **********************************************************************/ 4175 static int 4176 em_setup_receive_structures(struct adapter *adapter) 4177 { 4178 struct rx_ring *rxr = adapter->rx_rings; 4179 int q; 4180 4181 for (q = 0; q < adapter->num_queues; q++, rxr++) 4182 if (em_setup_receive_ring(rxr)) 4183 goto fail; 4184 4185 return (0); 4186 fail: 4187 /* 4188 * Free RX buffers allocated so far, we will only handle 4189 * the rings that completed, the failing case will have 4190 * cleaned up for itself. 'q' failed, so its the terminus. 4191 */ 4192 for (int i = 0; i < q; ++i) { 4193 rxr = &adapter->rx_rings[i]; 4194 for (int n = 0; n < adapter->num_rx_desc; n++) { 4195 struct em_buffer *rxbuf; 4196 rxbuf = &rxr->rx_buffers[n]; 4197 if (rxbuf->m_head != NULL) { 4198 bus_dmamap_sync(rxr->rxtag, rxbuf->map, 4199 BUS_DMASYNC_POSTREAD); 4200 bus_dmamap_unload(rxr->rxtag, rxbuf->map); 4201 m_freem(rxbuf->m_head); 4202 rxbuf->m_head = NULL; 4203 } 4204 } 4205 rxr->next_to_check = 0; 4206 rxr->next_to_refresh = 0; 4207 } 4208 4209 return (ENOBUFS); 4210 } 4211 4212 /********************************************************************* 4213 * 4214 * Free all receive rings. 4215 * 4216 **********************************************************************/ 4217 static void 4218 em_free_receive_structures(struct adapter *adapter) 4219 { 4220 struct rx_ring *rxr = adapter->rx_rings; 4221 4222 for (int i = 0; i < adapter->num_queues; i++, rxr++) { 4223 em_free_receive_buffers(rxr); 4224 /* Free the ring memory as well */ 4225 em_dma_free(adapter, &rxr->rxdma); 4226 EM_RX_LOCK_DESTROY(rxr); 4227 } 4228 4229 free(adapter->rx_rings, M_DEVBUF); 4230 } 4231 4232 4233 /********************************************************************* 4234 * 4235 * Free receive ring data structures 4236 * 4237 **********************************************************************/ 4238 static void 4239 em_free_receive_buffers(struct rx_ring *rxr) 4240 { 4241 struct adapter *adapter = rxr->adapter; 4242 struct em_buffer *rxbuf = NULL; 4243 4244 INIT_DEBUGOUT("free_receive_buffers: begin"); 4245 4246 if (rxr->rx_buffers != NULL) { 4247 for (int i = 0; i < adapter->num_rx_desc; i++) { 4248 rxbuf = &rxr->rx_buffers[i]; 4249 if (rxbuf->map != NULL) { 4250 bus_dmamap_sync(rxr->rxtag, rxbuf->map, 4251 BUS_DMASYNC_POSTREAD); 4252 bus_dmamap_unload(rxr->rxtag, rxbuf->map); 4253 bus_dmamap_destroy(rxr->rxtag, rxbuf->map); 4254 } 4255 if (rxbuf->m_head != NULL) { 4256 m_freem(rxbuf->m_head); 4257 rxbuf->m_head = NULL; 4258 } 4259 } 4260 free(rxr->rx_buffers, M_DEVBUF); 4261 rxr->rx_buffers = NULL; 4262 rxr->next_to_check = 0; 4263 rxr->next_to_refresh = 0; 4264 } 4265 4266 if (rxr->rxtag != NULL) { 4267 bus_dma_tag_destroy(rxr->rxtag); 4268 rxr->rxtag = NULL; 4269 } 4270 4271 return; 4272 } 4273 4274 4275 /********************************************************************* 4276 * 4277 * Enable receive unit. 4278 * 4279 **********************************************************************/ 4280 4281 static void 4282 em_initialize_receive_unit(struct adapter *adapter) 4283 { 4284 struct rx_ring *rxr = adapter->rx_rings; 4285 struct ifnet *ifp = adapter->ifp; 4286 struct e1000_hw *hw = &adapter->hw; 4287 u64 bus_addr; 4288 u32 rctl, rxcsum; 4289 4290 INIT_DEBUGOUT("em_initialize_receive_units: begin"); 4291 4292 /* 4293 * Make sure receives are disabled while setting 4294 * up the descriptor ring 4295 */ 4296 rctl = E1000_READ_REG(hw, E1000_RCTL); 4297 /* Do not disable if ever enabled on this hardware */ 4298 if ((hw->mac.type != e1000_82574) && (hw->mac.type != e1000_82583)) 4299 E1000_WRITE_REG(hw, E1000_RCTL, rctl & ~E1000_RCTL_EN); 4300 4301 E1000_WRITE_REG(&adapter->hw, E1000_RADV, 4302 adapter->rx_abs_int_delay.value); 4303 /* 4304 * Set the interrupt throttling rate. Value is calculated 4305 * as DEFAULT_ITR = 1/(MAX_INTS_PER_SEC * 256ns) 4306 */ 4307 E1000_WRITE_REG(hw, E1000_ITR, DEFAULT_ITR); 4308 4309 /* 4310 ** When using MSIX interrupts we need to throttle 4311 ** using the EITR register (82574 only) 4312 */ 4313 if (hw->mac.type == e1000_82574) { 4314 for (int i = 0; i < 4; i++) 4315 E1000_WRITE_REG(hw, E1000_EITR_82574(i), 4316 DEFAULT_ITR); 4317 /* Disable accelerated acknowledge */ 4318 E1000_WRITE_REG(hw, E1000_RFCTL, E1000_RFCTL_ACK_DIS); 4319 } 4320 4321 rxcsum = E1000_READ_REG(hw, E1000_RXCSUM); 4322 if (ifp->if_capenable & IFCAP_RXCSUM) 4323 rxcsum |= E1000_RXCSUM_TUOFL; 4324 else 4325 rxcsum &= ~E1000_RXCSUM_TUOFL; 4326 E1000_WRITE_REG(hw, E1000_RXCSUM, rxcsum); 4327 4328 /* 4329 ** XXX TEMPORARY WORKAROUND: on some systems with 82573 4330 ** long latencies are observed, like Lenovo X60. This 4331 ** change eliminates the problem, but since having positive 4332 ** values in RDTR is a known source of problems on other 4333 ** platforms another solution is being sought. 4334 */ 4335 if (hw->mac.type == e1000_82573) 4336 E1000_WRITE_REG(hw, E1000_RDTR, 0x20); 4337 4338 for (int i = 0; i < adapter->num_queues; i++, rxr++) { 4339 /* Setup the Base and Length of the Rx Descriptor Ring */ 4340 u32 rdt = adapter->num_rx_desc - 1; /* default */ 4341 4342 bus_addr = rxr->rxdma.dma_paddr; 4343 E1000_WRITE_REG(hw, E1000_RDLEN(i), 4344 adapter->num_rx_desc * sizeof(struct e1000_rx_desc)); 4345 E1000_WRITE_REG(hw, E1000_RDBAH(i), (u32)(bus_addr >> 32)); 4346 E1000_WRITE_REG(hw, E1000_RDBAL(i), (u32)bus_addr); 4347 /* Setup the Head and Tail Descriptor Pointers */ 4348 E1000_WRITE_REG(hw, E1000_RDH(i), 0); 4349 #ifdef DEV_NETMAP 4350 /* 4351 * an init() while a netmap client is active must 4352 * preserve the rx buffers passed to userspace. 4353 */ 4354 if (ifp->if_capenable & IFCAP_NETMAP) 4355 rdt -= NA(adapter->ifp)->rx_rings[i].nr_hwavail; 4356 #endif /* DEV_NETMAP */ 4357 E1000_WRITE_REG(hw, E1000_RDT(i), rdt); 4358 } 4359 4360 /* Set PTHRESH for improved jumbo performance */ 4361 if (((adapter->hw.mac.type == e1000_ich9lan) || 4362 (adapter->hw.mac.type == e1000_pch2lan) || 4363 (adapter->hw.mac.type == e1000_ich10lan)) && 4364 (ifp->if_mtu > ETHERMTU)) { 4365 u32 rxdctl = E1000_READ_REG(hw, E1000_RXDCTL(0)); 4366 E1000_WRITE_REG(hw, E1000_RXDCTL(0), rxdctl | 3); 4367 } 4368 4369 if (adapter->hw.mac.type >= e1000_pch2lan) { 4370 if (ifp->if_mtu > ETHERMTU) 4371 e1000_lv_jumbo_workaround_ich8lan(hw, TRUE); 4372 else 4373 e1000_lv_jumbo_workaround_ich8lan(hw, FALSE); 4374 } 4375 4376 /* Setup the Receive Control Register */ 4377 rctl &= ~(3 << E1000_RCTL_MO_SHIFT); 4378 rctl |= E1000_RCTL_EN | E1000_RCTL_BAM | 4379 E1000_RCTL_LBM_NO | E1000_RCTL_RDMTS_HALF | 4380 (hw->mac.mc_filter_type << E1000_RCTL_MO_SHIFT); 4381 4382 /* Strip the CRC */ 4383 rctl |= E1000_RCTL_SECRC; 4384 4385 /* Make sure VLAN Filters are off */ 4386 rctl &= ~E1000_RCTL_VFE; 4387 rctl &= ~E1000_RCTL_SBP; 4388 4389 if (adapter->rx_mbuf_sz == MCLBYTES) 4390 rctl |= E1000_RCTL_SZ_2048; 4391 else if (adapter->rx_mbuf_sz == MJUMPAGESIZE) 4392 rctl |= E1000_RCTL_SZ_4096 | E1000_RCTL_BSEX; 4393 else if (adapter->rx_mbuf_sz > MJUMPAGESIZE) 4394 rctl |= E1000_RCTL_SZ_8192 | E1000_RCTL_BSEX; 4395 4396 if (ifp->if_mtu > ETHERMTU) 4397 rctl |= E1000_RCTL_LPE; 4398 else 4399 rctl &= ~E1000_RCTL_LPE; 4400 4401 /* Write out the settings */ 4402 E1000_WRITE_REG(hw, E1000_RCTL, rctl); 4403 4404 return; 4405 } 4406 4407 4408 /********************************************************************* 4409 * 4410 * This routine executes in interrupt context. It replenishes 4411 * the mbufs in the descriptor and sends data which has been 4412 * dma'ed into host memory to upper layer. 4413 * 4414 * We loop at most count times if count is > 0, or until done if 4415 * count < 0. 4416 * 4417 * For polling we also now return the number of cleaned packets 4418 *********************************************************************/ 4419 static bool 4420 em_rxeof(struct rx_ring *rxr, int count, int *done) 4421 { 4422 struct adapter *adapter = rxr->adapter; 4423 struct ifnet *ifp = adapter->ifp; 4424 struct mbuf *mp, *sendmp; 4425 u8 status = 0; 4426 u16 len; 4427 int i, processed, rxdone = 0; 4428 bool eop; 4429 struct e1000_rx_desc *cur; 4430 4431 EM_RX_LOCK(rxr); 4432 4433 #ifdef DEV_NETMAP 4434 if (netmap_rx_irq(ifp, rxr->me, &processed)) { 4435 EM_RX_UNLOCK(rxr); 4436 return (FALSE); 4437 } 4438 #endif /* DEV_NETMAP */ 4439 4440 for (i = rxr->next_to_check, processed = 0; count != 0;) { 4441 4442 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) 4443 break; 4444 4445 bus_dmamap_sync(rxr->rxdma.dma_tag, rxr->rxdma.dma_map, 4446 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 4447 4448 cur = &rxr->rx_base[i]; 4449 status = cur->status; 4450 mp = sendmp = NULL; 4451 4452 if ((status & E1000_RXD_STAT_DD) == 0) 4453 break; 4454 4455 len = le16toh(cur->length); 4456 eop = (status & E1000_RXD_STAT_EOP) != 0; 4457 4458 if ((cur->errors & E1000_RXD_ERR_FRAME_ERR_MASK) || 4459 (rxr->discard == TRUE)) { 4460 adapter->dropped_pkts++; 4461 ++rxr->rx_discarded; 4462 if (!eop) /* Catch subsequent segs */ 4463 rxr->discard = TRUE; 4464 else 4465 rxr->discard = FALSE; 4466 em_rx_discard(rxr, i); 4467 goto next_desc; 4468 } 4469 bus_dmamap_unload(rxr->rxtag, rxr->rx_buffers[i].map); 4470 4471 /* Assign correct length to the current fragment */ 4472 mp = rxr->rx_buffers[i].m_head; 4473 mp->m_len = len; 4474 4475 /* Trigger for refresh */ 4476 rxr->rx_buffers[i].m_head = NULL; 4477 4478 /* First segment? */ 4479 if (rxr->fmp == NULL) { 4480 mp->m_pkthdr.len = len; 4481 rxr->fmp = rxr->lmp = mp; 4482 } else { 4483 /* Chain mbuf's together */ 4484 mp->m_flags &= ~M_PKTHDR; 4485 rxr->lmp->m_next = mp; 4486 rxr->lmp = mp; 4487 rxr->fmp->m_pkthdr.len += len; 4488 } 4489 4490 if (eop) { 4491 --count; 4492 sendmp = rxr->fmp; 4493 sendmp->m_pkthdr.rcvif = ifp; 4494 ifp->if_ipackets++; 4495 em_receive_checksum(cur, sendmp); 4496 #ifndef __NO_STRICT_ALIGNMENT 4497 if (adapter->hw.mac.max_frame_size > 4498 (MCLBYTES - ETHER_ALIGN) && 4499 em_fixup_rx(rxr) != 0) 4500 goto skip; 4501 #endif 4502 if (status & E1000_RXD_STAT_VP) { 4503 sendmp->m_pkthdr.ether_vtag = 4504 le16toh(cur->special); 4505 sendmp->m_flags |= M_VLANTAG; 4506 } 4507 #ifndef __NO_STRICT_ALIGNMENT 4508 skip: 4509 #endif 4510 rxr->fmp = rxr->lmp = NULL; 4511 } 4512 next_desc: 4513 /* Zero out the receive descriptors status. */ 4514 cur->status = 0; 4515 ++rxdone; /* cumulative for POLL */ 4516 ++processed; 4517 4518 /* Advance our pointers to the next descriptor. */ 4519 if (++i == adapter->num_rx_desc) 4520 i = 0; 4521 4522 /* Send to the stack */ 4523 if (sendmp != NULL) { 4524 rxr->next_to_check = i; 4525 EM_RX_UNLOCK(rxr); 4526 (*ifp->if_input)(ifp, sendmp); 4527 EM_RX_LOCK(rxr); 4528 i = rxr->next_to_check; 4529 } 4530 4531 /* Only refresh mbufs every 8 descriptors */ 4532 if (processed == 8) { 4533 em_refresh_mbufs(rxr, i); 4534 processed = 0; 4535 } 4536 } 4537 4538 /* Catch any remaining refresh work */ 4539 if (e1000_rx_unrefreshed(rxr)) 4540 em_refresh_mbufs(rxr, i); 4541 4542 rxr->next_to_check = i; 4543 if (done != NULL) 4544 *done = rxdone; 4545 EM_RX_UNLOCK(rxr); 4546 4547 return ((status & E1000_RXD_STAT_DD) ? TRUE : FALSE); 4548 } 4549 4550 static __inline void 4551 em_rx_discard(struct rx_ring *rxr, int i) 4552 { 4553 struct em_buffer *rbuf; 4554 4555 rbuf = &rxr->rx_buffers[i]; 4556 bus_dmamap_unload(rxr->rxtag, rbuf->map); 4557 4558 /* Free any previous pieces */ 4559 if (rxr->fmp != NULL) { 4560 rxr->fmp->m_flags |= M_PKTHDR; 4561 m_freem(rxr->fmp); 4562 rxr->fmp = NULL; 4563 rxr->lmp = NULL; 4564 } 4565 /* 4566 ** Free buffer and allow em_refresh_mbufs() 4567 ** to clean up and recharge buffer. 4568 */ 4569 if (rbuf->m_head) { 4570 m_free(rbuf->m_head); 4571 rbuf->m_head = NULL; 4572 } 4573 return; 4574 } 4575 4576 #ifndef __NO_STRICT_ALIGNMENT 4577 /* 4578 * When jumbo frames are enabled we should realign entire payload on 4579 * architecures with strict alignment. This is serious design mistake of 8254x 4580 * as it nullifies DMA operations. 8254x just allows RX buffer size to be 4581 * 2048/4096/8192/16384. What we really want is 2048 - ETHER_ALIGN to align its 4582 * payload. On architecures without strict alignment restrictions 8254x still 4583 * performs unaligned memory access which would reduce the performance too. 4584 * To avoid copying over an entire frame to align, we allocate a new mbuf and 4585 * copy ethernet header to the new mbuf. The new mbuf is prepended into the 4586 * existing mbuf chain. 4587 * 4588 * Be aware, best performance of the 8254x is achived only when jumbo frame is 4589 * not used at all on architectures with strict alignment. 4590 */ 4591 static int 4592 em_fixup_rx(struct rx_ring *rxr) 4593 { 4594 struct adapter *adapter = rxr->adapter; 4595 struct mbuf *m, *n; 4596 int error; 4597 4598 error = 0; 4599 m = rxr->fmp; 4600 if (m->m_len <= (MCLBYTES - ETHER_HDR_LEN)) { 4601 bcopy(m->m_data, m->m_data + ETHER_HDR_LEN, m->m_len); 4602 m->m_data += ETHER_HDR_LEN; 4603 } else { 4604 MGETHDR(n, M_NOWAIT, MT_DATA); 4605 if (n != NULL) { 4606 bcopy(m->m_data, n->m_data, ETHER_HDR_LEN); 4607 m->m_data += ETHER_HDR_LEN; 4608 m->m_len -= ETHER_HDR_LEN; 4609 n->m_len = ETHER_HDR_LEN; 4610 M_MOVE_PKTHDR(n, m); 4611 n->m_next = m; 4612 rxr->fmp = n; 4613 } else { 4614 adapter->dropped_pkts++; 4615 m_freem(rxr->fmp); 4616 rxr->fmp = NULL; 4617 error = ENOMEM; 4618 } 4619 } 4620 4621 return (error); 4622 } 4623 #endif 4624 4625 /********************************************************************* 4626 * 4627 * Verify that the hardware indicated that the checksum is valid. 4628 * Inform the stack about the status of checksum so that stack 4629 * doesn't spend time verifying the checksum. 4630 * 4631 *********************************************************************/ 4632 static void 4633 em_receive_checksum(struct e1000_rx_desc *rx_desc, struct mbuf *mp) 4634 { 4635 mp->m_pkthdr.csum_flags = 0; 4636 4637 /* Ignore Checksum bit is set */ 4638 if (rx_desc->status & E1000_RXD_STAT_IXSM) 4639 return; 4640 4641 if (rx_desc->errors & (E1000_RXD_ERR_TCPE | E1000_RXD_ERR_IPE)) 4642 return; 4643 4644 /* IP Checksum Good? */ 4645 if (rx_desc->status & E1000_RXD_STAT_IPCS) 4646 mp->m_pkthdr.csum_flags = (CSUM_IP_CHECKED | CSUM_IP_VALID); 4647 4648 /* TCP or UDP checksum */ 4649 if (rx_desc->status & (E1000_RXD_STAT_TCPCS | E1000_RXD_STAT_UDPCS)) { 4650 mp->m_pkthdr.csum_flags |= (CSUM_DATA_VALID | CSUM_PSEUDO_HDR); 4651 mp->m_pkthdr.csum_data = htons(0xffff); 4652 } 4653 } 4654 4655 /* 4656 * This routine is run via an vlan 4657 * config EVENT 4658 */ 4659 static void 4660 em_register_vlan(void *arg, struct ifnet *ifp, u16 vtag) 4661 { 4662 struct adapter *adapter = ifp->if_softc; 4663 u32 index, bit; 4664 4665 if (ifp->if_softc != arg) /* Not our event */ 4666 return; 4667 4668 if ((vtag == 0) || (vtag > 4095)) /* Invalid ID */ 4669 return; 4670 4671 EM_CORE_LOCK(adapter); 4672 index = (vtag >> 5) & 0x7F; 4673 bit = vtag & 0x1F; 4674 adapter->shadow_vfta[index] |= (1 << bit); 4675 ++adapter->num_vlans; 4676 /* Re-init to load the changes */ 4677 if (ifp->if_capenable & IFCAP_VLAN_HWFILTER) 4678 em_init_locked(adapter); 4679 EM_CORE_UNLOCK(adapter); 4680 } 4681 4682 /* 4683 * This routine is run via an vlan 4684 * unconfig EVENT 4685 */ 4686 static void 4687 em_unregister_vlan(void *arg, struct ifnet *ifp, u16 vtag) 4688 { 4689 struct adapter *adapter = ifp->if_softc; 4690 u32 index, bit; 4691 4692 if (ifp->if_softc != arg) 4693 return; 4694 4695 if ((vtag == 0) || (vtag > 4095)) /* Invalid */ 4696 return; 4697 4698 EM_CORE_LOCK(adapter); 4699 index = (vtag >> 5) & 0x7F; 4700 bit = vtag & 0x1F; 4701 adapter->shadow_vfta[index] &= ~(1 << bit); 4702 --adapter->num_vlans; 4703 /* Re-init to load the changes */ 4704 if (ifp->if_capenable & IFCAP_VLAN_HWFILTER) 4705 em_init_locked(adapter); 4706 EM_CORE_UNLOCK(adapter); 4707 } 4708 4709 static void 4710 em_setup_vlan_hw_support(struct adapter *adapter) 4711 { 4712 struct e1000_hw *hw = &adapter->hw; 4713 u32 reg; 4714 4715 /* 4716 ** We get here thru init_locked, meaning 4717 ** a soft reset, this has already cleared 4718 ** the VFTA and other state, so if there 4719 ** have been no vlan's registered do nothing. 4720 */ 4721 if (adapter->num_vlans == 0) 4722 return; 4723 4724 /* 4725 ** A soft reset zero's out the VFTA, so 4726 ** we need to repopulate it now. 4727 */ 4728 for (int i = 0; i < EM_VFTA_SIZE; i++) 4729 if (adapter->shadow_vfta[i] != 0) 4730 E1000_WRITE_REG_ARRAY(hw, E1000_VFTA, 4731 i, adapter->shadow_vfta[i]); 4732 4733 reg = E1000_READ_REG(hw, E1000_CTRL); 4734 reg |= E1000_CTRL_VME; 4735 E1000_WRITE_REG(hw, E1000_CTRL, reg); 4736 4737 /* Enable the Filter Table */ 4738 reg = E1000_READ_REG(hw, E1000_RCTL); 4739 reg &= ~E1000_RCTL_CFIEN; 4740 reg |= E1000_RCTL_VFE; 4741 E1000_WRITE_REG(hw, E1000_RCTL, reg); 4742 } 4743 4744 static void 4745 em_enable_intr(struct adapter *adapter) 4746 { 4747 struct e1000_hw *hw = &adapter->hw; 4748 u32 ims_mask = IMS_ENABLE_MASK; 4749 4750 if (hw->mac.type == e1000_82574) { 4751 E1000_WRITE_REG(hw, EM_EIAC, EM_MSIX_MASK); 4752 ims_mask |= EM_MSIX_MASK; 4753 } 4754 E1000_WRITE_REG(hw, E1000_IMS, ims_mask); 4755 } 4756 4757 static void 4758 em_disable_intr(struct adapter *adapter) 4759 { 4760 struct e1000_hw *hw = &adapter->hw; 4761 4762 if (hw->mac.type == e1000_82574) 4763 E1000_WRITE_REG(hw, EM_EIAC, 0); 4764 E1000_WRITE_REG(&adapter->hw, E1000_IMC, 0xffffffff); 4765 } 4766 4767 /* 4768 * Bit of a misnomer, what this really means is 4769 * to enable OS management of the system... aka 4770 * to disable special hardware management features 4771 */ 4772 static void 4773 em_init_manageability(struct adapter *adapter) 4774 { 4775 /* A shared code workaround */ 4776 #define E1000_82542_MANC2H E1000_MANC2H 4777 if (adapter->has_manage) { 4778 int manc2h = E1000_READ_REG(&adapter->hw, E1000_MANC2H); 4779 int manc = E1000_READ_REG(&adapter->hw, E1000_MANC); 4780 4781 /* disable hardware interception of ARP */ 4782 manc &= ~(E1000_MANC_ARP_EN); 4783 4784 /* enable receiving management packets to the host */ 4785 manc |= E1000_MANC_EN_MNG2HOST; 4786 #define E1000_MNG2HOST_PORT_623 (1 << 5) 4787 #define E1000_MNG2HOST_PORT_664 (1 << 6) 4788 manc2h |= E1000_MNG2HOST_PORT_623; 4789 manc2h |= E1000_MNG2HOST_PORT_664; 4790 E1000_WRITE_REG(&adapter->hw, E1000_MANC2H, manc2h); 4791 E1000_WRITE_REG(&adapter->hw, E1000_MANC, manc); 4792 } 4793 } 4794 4795 /* 4796 * Give control back to hardware management 4797 * controller if there is one. 4798 */ 4799 static void 4800 em_release_manageability(struct adapter *adapter) 4801 { 4802 if (adapter->has_manage) { 4803 int manc = E1000_READ_REG(&adapter->hw, E1000_MANC); 4804 4805 /* re-enable hardware interception of ARP */ 4806 manc |= E1000_MANC_ARP_EN; 4807 manc &= ~E1000_MANC_EN_MNG2HOST; 4808 4809 E1000_WRITE_REG(&adapter->hw, E1000_MANC, manc); 4810 } 4811 } 4812 4813 /* 4814 * em_get_hw_control sets the {CTRL_EXT|FWSM}:DRV_LOAD bit. 4815 * For ASF and Pass Through versions of f/w this means 4816 * that the driver is loaded. For AMT version type f/w 4817 * this means that the network i/f is open. 4818 */ 4819 static void 4820 em_get_hw_control(struct adapter *adapter) 4821 { 4822 u32 ctrl_ext, swsm; 4823 4824 if (adapter->hw.mac.type == e1000_82573) { 4825 swsm = E1000_READ_REG(&adapter->hw, E1000_SWSM); 4826 E1000_WRITE_REG(&adapter->hw, E1000_SWSM, 4827 swsm | E1000_SWSM_DRV_LOAD); 4828 return; 4829 } 4830 /* else */ 4831 ctrl_ext = E1000_READ_REG(&adapter->hw, E1000_CTRL_EXT); 4832 E1000_WRITE_REG(&adapter->hw, E1000_CTRL_EXT, 4833 ctrl_ext | E1000_CTRL_EXT_DRV_LOAD); 4834 return; 4835 } 4836 4837 /* 4838 * em_release_hw_control resets {CTRL_EXT|FWSM}:DRV_LOAD bit. 4839 * For ASF and Pass Through versions of f/w this means that 4840 * the driver is no longer loaded. For AMT versions of the 4841 * f/w this means that the network i/f is closed. 4842 */ 4843 static void 4844 em_release_hw_control(struct adapter *adapter) 4845 { 4846 u32 ctrl_ext, swsm; 4847 4848 if (!adapter->has_manage) 4849 return; 4850 4851 if (adapter->hw.mac.type == e1000_82573) { 4852 swsm = E1000_READ_REG(&adapter->hw, E1000_SWSM); 4853 E1000_WRITE_REG(&adapter->hw, E1000_SWSM, 4854 swsm & ~E1000_SWSM_DRV_LOAD); 4855 return; 4856 } 4857 /* else */ 4858 ctrl_ext = E1000_READ_REG(&adapter->hw, E1000_CTRL_EXT); 4859 E1000_WRITE_REG(&adapter->hw, E1000_CTRL_EXT, 4860 ctrl_ext & ~E1000_CTRL_EXT_DRV_LOAD); 4861 return; 4862 } 4863 4864 static int 4865 em_is_valid_ether_addr(u8 *addr) 4866 { 4867 char zero_addr[6] = { 0, 0, 0, 0, 0, 0 }; 4868 4869 if ((addr[0] & 1) || (!bcmp(addr, zero_addr, ETHER_ADDR_LEN))) { 4870 return (FALSE); 4871 } 4872 4873 return (TRUE); 4874 } 4875 4876 /* 4877 ** Parse the interface capabilities with regard 4878 ** to both system management and wake-on-lan for 4879 ** later use. 4880 */ 4881 static void 4882 em_get_wakeup(device_t dev) 4883 { 4884 struct adapter *adapter = device_get_softc(dev); 4885 u16 eeprom_data = 0, device_id, apme_mask; 4886 4887 adapter->has_manage = e1000_enable_mng_pass_thru(&adapter->hw); 4888 apme_mask = EM_EEPROM_APME; 4889 4890 switch (adapter->hw.mac.type) { 4891 case e1000_82573: 4892 case e1000_82583: 4893 adapter->has_amt = TRUE; 4894 /* Falls thru */ 4895 case e1000_82571: 4896 case e1000_82572: 4897 case e1000_80003es2lan: 4898 if (adapter->hw.bus.func == 1) { 4899 e1000_read_nvm(&adapter->hw, 4900 NVM_INIT_CONTROL3_PORT_B, 1, &eeprom_data); 4901 break; 4902 } else 4903 e1000_read_nvm(&adapter->hw, 4904 NVM_INIT_CONTROL3_PORT_A, 1, &eeprom_data); 4905 break; 4906 case e1000_ich8lan: 4907 case e1000_ich9lan: 4908 case e1000_ich10lan: 4909 case e1000_pchlan: 4910 case e1000_pch2lan: 4911 apme_mask = E1000_WUC_APME; 4912 adapter->has_amt = TRUE; 4913 eeprom_data = E1000_READ_REG(&adapter->hw, E1000_WUC); 4914 break; 4915 default: 4916 e1000_read_nvm(&adapter->hw, 4917 NVM_INIT_CONTROL3_PORT_A, 1, &eeprom_data); 4918 break; 4919 } 4920 if (eeprom_data & apme_mask) 4921 adapter->wol = (E1000_WUFC_MAG | E1000_WUFC_MC); 4922 /* 4923 * We have the eeprom settings, now apply the special cases 4924 * where the eeprom may be wrong or the board won't support 4925 * wake on lan on a particular port 4926 */ 4927 device_id = pci_get_device(dev); 4928 switch (device_id) { 4929 case E1000_DEV_ID_82571EB_FIBER: 4930 /* Wake events only supported on port A for dual fiber 4931 * regardless of eeprom setting */ 4932 if (E1000_READ_REG(&adapter->hw, E1000_STATUS) & 4933 E1000_STATUS_FUNC_1) 4934 adapter->wol = 0; 4935 break; 4936 case E1000_DEV_ID_82571EB_QUAD_COPPER: 4937 case E1000_DEV_ID_82571EB_QUAD_FIBER: 4938 case E1000_DEV_ID_82571EB_QUAD_COPPER_LP: 4939 /* if quad port adapter, disable WoL on all but port A */ 4940 if (global_quad_port_a != 0) 4941 adapter->wol = 0; 4942 /* Reset for multiple quad port adapters */ 4943 if (++global_quad_port_a == 4) 4944 global_quad_port_a = 0; 4945 break; 4946 } 4947 return; 4948 } 4949 4950 4951 /* 4952 * Enable PCI Wake On Lan capability 4953 */ 4954 static void 4955 em_enable_wakeup(device_t dev) 4956 { 4957 struct adapter *adapter = device_get_softc(dev); 4958 struct ifnet *ifp = adapter->ifp; 4959 u32 pmc, ctrl, ctrl_ext, rctl; 4960 u16 status; 4961 4962 if ((pci_find_cap(dev, PCIY_PMG, &pmc) != 0)) 4963 return; 4964 4965 /* Advertise the wakeup capability */ 4966 ctrl = E1000_READ_REG(&adapter->hw, E1000_CTRL); 4967 ctrl |= (E1000_CTRL_SWDPIN2 | E1000_CTRL_SWDPIN3); 4968 E1000_WRITE_REG(&adapter->hw, E1000_CTRL, ctrl); 4969 E1000_WRITE_REG(&adapter->hw, E1000_WUC, E1000_WUC_PME_EN); 4970 4971 if ((adapter->hw.mac.type == e1000_ich8lan) || 4972 (adapter->hw.mac.type == e1000_pchlan) || 4973 (adapter->hw.mac.type == e1000_ich9lan) || 4974 (adapter->hw.mac.type == e1000_ich10lan)) 4975 e1000_suspend_workarounds_ich8lan(&adapter->hw); 4976 4977 /* Keep the laser running on Fiber adapters */ 4978 if (adapter->hw.phy.media_type == e1000_media_type_fiber || 4979 adapter->hw.phy.media_type == e1000_media_type_internal_serdes) { 4980 ctrl_ext = E1000_READ_REG(&adapter->hw, E1000_CTRL_EXT); 4981 ctrl_ext |= E1000_CTRL_EXT_SDP3_DATA; 4982 E1000_WRITE_REG(&adapter->hw, E1000_CTRL_EXT, ctrl_ext); 4983 } 4984 4985 /* 4986 ** Determine type of Wakeup: note that wol 4987 ** is set with all bits on by default. 4988 */ 4989 if ((ifp->if_capenable & IFCAP_WOL_MAGIC) == 0) 4990 adapter->wol &= ~E1000_WUFC_MAG; 4991 4992 if ((ifp->if_capenable & IFCAP_WOL_MCAST) == 0) 4993 adapter->wol &= ~E1000_WUFC_MC; 4994 else { 4995 rctl = E1000_READ_REG(&adapter->hw, E1000_RCTL); 4996 rctl |= E1000_RCTL_MPE; 4997 E1000_WRITE_REG(&adapter->hw, E1000_RCTL, rctl); 4998 } 4999 5000 if ((adapter->hw.mac.type == e1000_pchlan) || 5001 (adapter->hw.mac.type == e1000_pch2lan)) { 5002 if (em_enable_phy_wakeup(adapter)) 5003 return; 5004 } else { 5005 E1000_WRITE_REG(&adapter->hw, E1000_WUC, E1000_WUC_PME_EN); 5006 E1000_WRITE_REG(&adapter->hw, E1000_WUFC, adapter->wol); 5007 } 5008 5009 if (adapter->hw.phy.type == e1000_phy_igp_3) 5010 e1000_igp3_phy_powerdown_workaround_ich8lan(&adapter->hw); 5011 5012 /* Request PME */ 5013 status = pci_read_config(dev, pmc + PCIR_POWER_STATUS, 2); 5014 status &= ~(PCIM_PSTAT_PME | PCIM_PSTAT_PMEENABLE); 5015 if (ifp->if_capenable & IFCAP_WOL) 5016 status |= PCIM_PSTAT_PME | PCIM_PSTAT_PMEENABLE; 5017 pci_write_config(dev, pmc + PCIR_POWER_STATUS, status, 2); 5018 5019 return; 5020 } 5021 5022 /* 5023 ** WOL in the newer chipset interfaces (pchlan) 5024 ** require thing to be copied into the phy 5025 */ 5026 static int 5027 em_enable_phy_wakeup(struct adapter *adapter) 5028 { 5029 struct e1000_hw *hw = &adapter->hw; 5030 u32 mreg, ret = 0; 5031 u16 preg; 5032 5033 /* copy MAC RARs to PHY RARs */ 5034 e1000_copy_rx_addrs_to_phy_ich8lan(hw); 5035 5036 /* copy MAC MTA to PHY MTA */ 5037 for (int i = 0; i < adapter->hw.mac.mta_reg_count; i++) { 5038 mreg = E1000_READ_REG_ARRAY(hw, E1000_MTA, i); 5039 e1000_write_phy_reg(hw, BM_MTA(i), (u16)(mreg & 0xFFFF)); 5040 e1000_write_phy_reg(hw, BM_MTA(i) + 1, 5041 (u16)((mreg >> 16) & 0xFFFF)); 5042 } 5043 5044 /* configure PHY Rx Control register */ 5045 e1000_read_phy_reg(&adapter->hw, BM_RCTL, &preg); 5046 mreg = E1000_READ_REG(hw, E1000_RCTL); 5047 if (mreg & E1000_RCTL_UPE) 5048 preg |= BM_RCTL_UPE; 5049 if (mreg & E1000_RCTL_MPE) 5050 preg |= BM_RCTL_MPE; 5051 preg &= ~(BM_RCTL_MO_MASK); 5052 if (mreg & E1000_RCTL_MO_3) 5053 preg |= (((mreg & E1000_RCTL_MO_3) >> E1000_RCTL_MO_SHIFT) 5054 << BM_RCTL_MO_SHIFT); 5055 if (mreg & E1000_RCTL_BAM) 5056 preg |= BM_RCTL_BAM; 5057 if (mreg & E1000_RCTL_PMCF) 5058 preg |= BM_RCTL_PMCF; 5059 mreg = E1000_READ_REG(hw, E1000_CTRL); 5060 if (mreg & E1000_CTRL_RFCE) 5061 preg |= BM_RCTL_RFCE; 5062 e1000_write_phy_reg(&adapter->hw, BM_RCTL, preg); 5063 5064 /* enable PHY wakeup in MAC register */ 5065 E1000_WRITE_REG(hw, E1000_WUC, 5066 E1000_WUC_PHY_WAKE | E1000_WUC_PME_EN); 5067 E1000_WRITE_REG(hw, E1000_WUFC, adapter->wol); 5068 5069 /* configure and enable PHY wakeup in PHY registers */ 5070 e1000_write_phy_reg(&adapter->hw, BM_WUFC, adapter->wol); 5071 e1000_write_phy_reg(&adapter->hw, BM_WUC, E1000_WUC_PME_EN); 5072 5073 /* activate PHY wakeup */ 5074 ret = hw->phy.ops.acquire(hw); 5075 if (ret) { 5076 printf("Could not acquire PHY\n"); 5077 return ret; 5078 } 5079 e1000_write_phy_reg_mdic(hw, IGP01E1000_PHY_PAGE_SELECT, 5080 (BM_WUC_ENABLE_PAGE << IGP_PAGE_SHIFT)); 5081 ret = e1000_read_phy_reg_mdic(hw, BM_WUC_ENABLE_REG, &preg); 5082 if (ret) { 5083 printf("Could not read PHY page 769\n"); 5084 goto out; 5085 } 5086 preg |= BM_WUC_ENABLE_BIT | BM_WUC_HOST_WU_BIT; 5087 ret = e1000_write_phy_reg_mdic(hw, BM_WUC_ENABLE_REG, preg); 5088 if (ret) 5089 printf("Could not set PHY Host Wakeup bit\n"); 5090 out: 5091 hw->phy.ops.release(hw); 5092 5093 return ret; 5094 } 5095 5096 static void 5097 em_led_func(void *arg, int onoff) 5098 { 5099 struct adapter *adapter = arg; 5100 5101 EM_CORE_LOCK(adapter); 5102 if (onoff) { 5103 e1000_setup_led(&adapter->hw); 5104 e1000_led_on(&adapter->hw); 5105 } else { 5106 e1000_led_off(&adapter->hw); 5107 e1000_cleanup_led(&adapter->hw); 5108 } 5109 EM_CORE_UNLOCK(adapter); 5110 } 5111 5112 /* 5113 ** Disable the L0S and L1 LINK states 5114 */ 5115 static void 5116 em_disable_aspm(struct adapter *adapter) 5117 { 5118 int base, reg; 5119 u16 link_cap,link_ctrl; 5120 device_t dev = adapter->dev; 5121 5122 switch (adapter->hw.mac.type) { 5123 case e1000_82573: 5124 case e1000_82574: 5125 case e1000_82583: 5126 break; 5127 default: 5128 return; 5129 } 5130 if (pci_find_cap(dev, PCIY_EXPRESS, &base) != 0) 5131 return; 5132 reg = base + PCIER_LINK_CAP; 5133 link_cap = pci_read_config(dev, reg, 2); 5134 if ((link_cap & PCIEM_LINK_CAP_ASPM) == 0) 5135 return; 5136 reg = base + PCIER_LINK_CTL; 5137 link_ctrl = pci_read_config(dev, reg, 2); 5138 link_ctrl &= ~PCIEM_LINK_CTL_ASPMC; 5139 pci_write_config(dev, reg, link_ctrl, 2); 5140 return; 5141 } 5142 5143 /********************************************************************** 5144 * 5145 * Update the board statistics counters. 5146 * 5147 **********************************************************************/ 5148 static void 5149 em_update_stats_counters(struct adapter *adapter) 5150 { 5151 struct ifnet *ifp; 5152 5153 if(adapter->hw.phy.media_type == e1000_media_type_copper || 5154 (E1000_READ_REG(&adapter->hw, E1000_STATUS) & E1000_STATUS_LU)) { 5155 adapter->stats.symerrs += E1000_READ_REG(&adapter->hw, E1000_SYMERRS); 5156 adapter->stats.sec += E1000_READ_REG(&adapter->hw, E1000_SEC); 5157 } 5158 adapter->stats.crcerrs += E1000_READ_REG(&adapter->hw, E1000_CRCERRS); 5159 adapter->stats.mpc += E1000_READ_REG(&adapter->hw, E1000_MPC); 5160 adapter->stats.scc += E1000_READ_REG(&adapter->hw, E1000_SCC); 5161 adapter->stats.ecol += E1000_READ_REG(&adapter->hw, E1000_ECOL); 5162 5163 adapter->stats.mcc += E1000_READ_REG(&adapter->hw, E1000_MCC); 5164 adapter->stats.latecol += E1000_READ_REG(&adapter->hw, E1000_LATECOL); 5165 adapter->stats.colc += E1000_READ_REG(&adapter->hw, E1000_COLC); 5166 adapter->stats.dc += E1000_READ_REG(&adapter->hw, E1000_DC); 5167 adapter->stats.rlec += E1000_READ_REG(&adapter->hw, E1000_RLEC); 5168 adapter->stats.xonrxc += E1000_READ_REG(&adapter->hw, E1000_XONRXC); 5169 adapter->stats.xontxc += E1000_READ_REG(&adapter->hw, E1000_XONTXC); 5170 /* 5171 ** For watchdog management we need to know if we have been 5172 ** paused during the last interval, so capture that here. 5173 */ 5174 adapter->pause_frames = E1000_READ_REG(&adapter->hw, E1000_XOFFRXC); 5175 adapter->stats.xoffrxc += adapter->pause_frames; 5176 adapter->stats.xofftxc += E1000_READ_REG(&adapter->hw, E1000_XOFFTXC); 5177 adapter->stats.fcruc += E1000_READ_REG(&adapter->hw, E1000_FCRUC); 5178 adapter->stats.prc64 += E1000_READ_REG(&adapter->hw, E1000_PRC64); 5179 adapter->stats.prc127 += E1000_READ_REG(&adapter->hw, E1000_PRC127); 5180 adapter->stats.prc255 += E1000_READ_REG(&adapter->hw, E1000_PRC255); 5181 adapter->stats.prc511 += E1000_READ_REG(&adapter->hw, E1000_PRC511); 5182 adapter->stats.prc1023 += E1000_READ_REG(&adapter->hw, E1000_PRC1023); 5183 adapter->stats.prc1522 += E1000_READ_REG(&adapter->hw, E1000_PRC1522); 5184 adapter->stats.gprc += E1000_READ_REG(&adapter->hw, E1000_GPRC); 5185 adapter->stats.bprc += E1000_READ_REG(&adapter->hw, E1000_BPRC); 5186 adapter->stats.mprc += E1000_READ_REG(&adapter->hw, E1000_MPRC); 5187 adapter->stats.gptc += E1000_READ_REG(&adapter->hw, E1000_GPTC); 5188 5189 /* For the 64-bit byte counters the low dword must be read first. */ 5190 /* Both registers clear on the read of the high dword */ 5191 5192 adapter->stats.gorc += E1000_READ_REG(&adapter->hw, E1000_GORCL) + 5193 ((u64)E1000_READ_REG(&adapter->hw, E1000_GORCH) << 32); 5194 adapter->stats.gotc += E1000_READ_REG(&adapter->hw, E1000_GOTCL) + 5195 ((u64)E1000_READ_REG(&adapter->hw, E1000_GOTCH) << 32); 5196 5197 adapter->stats.rnbc += E1000_READ_REG(&adapter->hw, E1000_RNBC); 5198 adapter->stats.ruc += E1000_READ_REG(&adapter->hw, E1000_RUC); 5199 adapter->stats.rfc += E1000_READ_REG(&adapter->hw, E1000_RFC); 5200 adapter->stats.roc += E1000_READ_REG(&adapter->hw, E1000_ROC); 5201 adapter->stats.rjc += E1000_READ_REG(&adapter->hw, E1000_RJC); 5202 5203 adapter->stats.tor += E1000_READ_REG(&adapter->hw, E1000_TORH); 5204 adapter->stats.tot += E1000_READ_REG(&adapter->hw, E1000_TOTH); 5205 5206 adapter->stats.tpr += E1000_READ_REG(&adapter->hw, E1000_TPR); 5207 adapter->stats.tpt += E1000_READ_REG(&adapter->hw, E1000_TPT); 5208 adapter->stats.ptc64 += E1000_READ_REG(&adapter->hw, E1000_PTC64); 5209 adapter->stats.ptc127 += E1000_READ_REG(&adapter->hw, E1000_PTC127); 5210 adapter->stats.ptc255 += E1000_READ_REG(&adapter->hw, E1000_PTC255); 5211 adapter->stats.ptc511 += E1000_READ_REG(&adapter->hw, E1000_PTC511); 5212 adapter->stats.ptc1023 += E1000_READ_REG(&adapter->hw, E1000_PTC1023); 5213 adapter->stats.ptc1522 += E1000_READ_REG(&adapter->hw, E1000_PTC1522); 5214 adapter->stats.mptc += E1000_READ_REG(&adapter->hw, E1000_MPTC); 5215 adapter->stats.bptc += E1000_READ_REG(&adapter->hw, E1000_BPTC); 5216 5217 /* Interrupt Counts */ 5218 5219 adapter->stats.iac += E1000_READ_REG(&adapter->hw, E1000_IAC); 5220 adapter->stats.icrxptc += E1000_READ_REG(&adapter->hw, E1000_ICRXPTC); 5221 adapter->stats.icrxatc += E1000_READ_REG(&adapter->hw, E1000_ICRXATC); 5222 adapter->stats.ictxptc += E1000_READ_REG(&adapter->hw, E1000_ICTXPTC); 5223 adapter->stats.ictxatc += E1000_READ_REG(&adapter->hw, E1000_ICTXATC); 5224 adapter->stats.ictxqec += E1000_READ_REG(&adapter->hw, E1000_ICTXQEC); 5225 adapter->stats.ictxqmtc += E1000_READ_REG(&adapter->hw, E1000_ICTXQMTC); 5226 adapter->stats.icrxdmtc += E1000_READ_REG(&adapter->hw, E1000_ICRXDMTC); 5227 adapter->stats.icrxoc += E1000_READ_REG(&adapter->hw, E1000_ICRXOC); 5228 5229 if (adapter->hw.mac.type >= e1000_82543) { 5230 adapter->stats.algnerrc += 5231 E1000_READ_REG(&adapter->hw, E1000_ALGNERRC); 5232 adapter->stats.rxerrc += 5233 E1000_READ_REG(&adapter->hw, E1000_RXERRC); 5234 adapter->stats.tncrs += 5235 E1000_READ_REG(&adapter->hw, E1000_TNCRS); 5236 adapter->stats.cexterr += 5237 E1000_READ_REG(&adapter->hw, E1000_CEXTERR); 5238 adapter->stats.tsctc += 5239 E1000_READ_REG(&adapter->hw, E1000_TSCTC); 5240 adapter->stats.tsctfc += 5241 E1000_READ_REG(&adapter->hw, E1000_TSCTFC); 5242 } 5243 ifp = adapter->ifp; 5244 5245 ifp->if_collisions = adapter->stats.colc; 5246 5247 /* Rx Errors */ 5248 ifp->if_ierrors = adapter->dropped_pkts + adapter->stats.rxerrc + 5249 adapter->stats.crcerrs + adapter->stats.algnerrc + 5250 adapter->stats.ruc + adapter->stats.roc + 5251 adapter->stats.mpc + adapter->stats.cexterr; 5252 5253 /* Tx Errors */ 5254 ifp->if_oerrors = adapter->stats.ecol + 5255 adapter->stats.latecol + adapter->watchdog_events; 5256 } 5257 5258 /* Export a single 32-bit register via a read-only sysctl. */ 5259 static int 5260 em_sysctl_reg_handler(SYSCTL_HANDLER_ARGS) 5261 { 5262 struct adapter *adapter; 5263 u_int val; 5264 5265 adapter = oidp->oid_arg1; 5266 val = E1000_READ_REG(&adapter->hw, oidp->oid_arg2); 5267 return (sysctl_handle_int(oidp, &val, 0, req)); 5268 } 5269 5270 /* 5271 * Add sysctl variables, one per statistic, to the system. 5272 */ 5273 static void 5274 em_add_hw_stats(struct adapter *adapter) 5275 { 5276 device_t dev = adapter->dev; 5277 5278 struct tx_ring *txr = adapter->tx_rings; 5279 struct rx_ring *rxr = adapter->rx_rings; 5280 5281 struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(dev); 5282 struct sysctl_oid *tree = device_get_sysctl_tree(dev); 5283 struct sysctl_oid_list *child = SYSCTL_CHILDREN(tree); 5284 struct e1000_hw_stats *stats = &adapter->stats; 5285 5286 struct sysctl_oid *stat_node, *queue_node, *int_node; 5287 struct sysctl_oid_list *stat_list, *queue_list, *int_list; 5288 5289 #define QUEUE_NAME_LEN 32 5290 char namebuf[QUEUE_NAME_LEN]; 5291 5292 /* Driver Statistics */ 5293 SYSCTL_ADD_ULONG(ctx, child, OID_AUTO, "link_irq", 5294 CTLFLAG_RD, &adapter->link_irq, 5295 "Link MSIX IRQ Handled"); 5296 SYSCTL_ADD_ULONG(ctx, child, OID_AUTO, "mbuf_alloc_fail", 5297 CTLFLAG_RD, &adapter->mbuf_alloc_failed, 5298 "Std mbuf failed"); 5299 SYSCTL_ADD_ULONG(ctx, child, OID_AUTO, "cluster_alloc_fail", 5300 CTLFLAG_RD, &adapter->mbuf_cluster_failed, 5301 "Std mbuf cluster failed"); 5302 SYSCTL_ADD_ULONG(ctx, child, OID_AUTO, "dropped", 5303 CTLFLAG_RD, &adapter->dropped_pkts, 5304 "Driver dropped packets"); 5305 SYSCTL_ADD_ULONG(ctx, child, OID_AUTO, "tx_dma_fail", 5306 CTLFLAG_RD, &adapter->no_tx_dma_setup, 5307 "Driver tx dma failure in xmit"); 5308 SYSCTL_ADD_ULONG(ctx, child, OID_AUTO, "rx_overruns", 5309 CTLFLAG_RD, &adapter->rx_overruns, 5310 "RX overruns"); 5311 SYSCTL_ADD_ULONG(ctx, child, OID_AUTO, "watchdog_timeouts", 5312 CTLFLAG_RD, &adapter->watchdog_events, 5313 "Watchdog timeouts"); 5314 5315 SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "device_control", 5316 CTLTYPE_UINT | CTLFLAG_RD, adapter, E1000_CTRL, 5317 em_sysctl_reg_handler, "IU", 5318 "Device Control Register"); 5319 SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "rx_control", 5320 CTLTYPE_UINT | CTLFLAG_RD, adapter, E1000_RCTL, 5321 em_sysctl_reg_handler, "IU", 5322 "Receiver Control Register"); 5323 SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "fc_high_water", 5324 CTLFLAG_RD, &adapter->hw.fc.high_water, 0, 5325 "Flow Control High Watermark"); 5326 SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "fc_low_water", 5327 CTLFLAG_RD, &adapter->hw.fc.low_water, 0, 5328 "Flow Control Low Watermark"); 5329 5330 for (int i = 0; i < adapter->num_queues; i++, rxr++, txr++) { 5331 snprintf(namebuf, QUEUE_NAME_LEN, "queue%d", i); 5332 queue_node = SYSCTL_ADD_NODE(ctx, child, OID_AUTO, namebuf, 5333 CTLFLAG_RD, NULL, "Queue Name"); 5334 queue_list = SYSCTL_CHILDREN(queue_node); 5335 5336 SYSCTL_ADD_PROC(ctx, queue_list, OID_AUTO, "txd_head", 5337 CTLTYPE_UINT | CTLFLAG_RD, adapter, 5338 E1000_TDH(txr->me), 5339 em_sysctl_reg_handler, "IU", 5340 "Transmit Descriptor Head"); 5341 SYSCTL_ADD_PROC(ctx, queue_list, OID_AUTO, "txd_tail", 5342 CTLTYPE_UINT | CTLFLAG_RD, adapter, 5343 E1000_TDT(txr->me), 5344 em_sysctl_reg_handler, "IU", 5345 "Transmit Descriptor Tail"); 5346 SYSCTL_ADD_ULONG(ctx, queue_list, OID_AUTO, "tx_irq", 5347 CTLFLAG_RD, &txr->tx_irq, 5348 "Queue MSI-X Transmit Interrupts"); 5349 SYSCTL_ADD_ULONG(ctx, queue_list, OID_AUTO, "no_desc_avail", 5350 CTLFLAG_RD, &txr->no_desc_avail, 5351 "Queue No Descriptor Available"); 5352 5353 SYSCTL_ADD_PROC(ctx, queue_list, OID_AUTO, "rxd_head", 5354 CTLTYPE_UINT | CTLFLAG_RD, adapter, 5355 E1000_RDH(rxr->me), 5356 em_sysctl_reg_handler, "IU", 5357 "Receive Descriptor Head"); 5358 SYSCTL_ADD_PROC(ctx, queue_list, OID_AUTO, "rxd_tail", 5359 CTLTYPE_UINT | CTLFLAG_RD, adapter, 5360 E1000_RDT(rxr->me), 5361 em_sysctl_reg_handler, "IU", 5362 "Receive Descriptor Tail"); 5363 SYSCTL_ADD_ULONG(ctx, queue_list, OID_AUTO, "rx_irq", 5364 CTLFLAG_RD, &rxr->rx_irq, 5365 "Queue MSI-X Receive Interrupts"); 5366 } 5367 5368 /* MAC stats get their own sub node */ 5369 5370 stat_node = SYSCTL_ADD_NODE(ctx, child, OID_AUTO, "mac_stats", 5371 CTLFLAG_RD, NULL, "Statistics"); 5372 stat_list = SYSCTL_CHILDREN(stat_node); 5373 5374 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "excess_coll", 5375 CTLFLAG_RD, &stats->ecol, 5376 "Excessive collisions"); 5377 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "single_coll", 5378 CTLFLAG_RD, &stats->scc, 5379 "Single collisions"); 5380 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "multiple_coll", 5381 CTLFLAG_RD, &stats->mcc, 5382 "Multiple collisions"); 5383 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "late_coll", 5384 CTLFLAG_RD, &stats->latecol, 5385 "Late collisions"); 5386 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "collision_count", 5387 CTLFLAG_RD, &stats->colc, 5388 "Collision Count"); 5389 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "symbol_errors", 5390 CTLFLAG_RD, &adapter->stats.symerrs, 5391 "Symbol Errors"); 5392 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "sequence_errors", 5393 CTLFLAG_RD, &adapter->stats.sec, 5394 "Sequence Errors"); 5395 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "defer_count", 5396 CTLFLAG_RD, &adapter->stats.dc, 5397 "Defer Count"); 5398 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "missed_packets", 5399 CTLFLAG_RD, &adapter->stats.mpc, 5400 "Missed Packets"); 5401 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "recv_no_buff", 5402 CTLFLAG_RD, &adapter->stats.rnbc, 5403 "Receive No Buffers"); 5404 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "recv_undersize", 5405 CTLFLAG_RD, &adapter->stats.ruc, 5406 "Receive Undersize"); 5407 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "recv_fragmented", 5408 CTLFLAG_RD, &adapter->stats.rfc, 5409 "Fragmented Packets Received "); 5410 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "recv_oversize", 5411 CTLFLAG_RD, &adapter->stats.roc, 5412 "Oversized Packets Received"); 5413 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "recv_jabber", 5414 CTLFLAG_RD, &adapter->stats.rjc, 5415 "Recevied Jabber"); 5416 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "recv_errs", 5417 CTLFLAG_RD, &adapter->stats.rxerrc, 5418 "Receive Errors"); 5419 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "crc_errs", 5420 CTLFLAG_RD, &adapter->stats.crcerrs, 5421 "CRC errors"); 5422 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "alignment_errs", 5423 CTLFLAG_RD, &adapter->stats.algnerrc, 5424 "Alignment Errors"); 5425 /* On 82575 these are collision counts */ 5426 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "coll_ext_errs", 5427 CTLFLAG_RD, &adapter->stats.cexterr, 5428 "Collision/Carrier extension errors"); 5429 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "xon_recvd", 5430 CTLFLAG_RD, &adapter->stats.xonrxc, 5431 "XON Received"); 5432 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "xon_txd", 5433 CTLFLAG_RD, &adapter->stats.xontxc, 5434 "XON Transmitted"); 5435 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "xoff_recvd", 5436 CTLFLAG_RD, &adapter->stats.xoffrxc, 5437 "XOFF Received"); 5438 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "xoff_txd", 5439 CTLFLAG_RD, &adapter->stats.xofftxc, 5440 "XOFF Transmitted"); 5441 5442 /* Packet Reception Stats */ 5443 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "total_pkts_recvd", 5444 CTLFLAG_RD, &adapter->stats.tpr, 5445 "Total Packets Received "); 5446 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "good_pkts_recvd", 5447 CTLFLAG_RD, &adapter->stats.gprc, 5448 "Good Packets Received"); 5449 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "bcast_pkts_recvd", 5450 CTLFLAG_RD, &adapter->stats.bprc, 5451 "Broadcast Packets Received"); 5452 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "mcast_pkts_recvd", 5453 CTLFLAG_RD, &adapter->stats.mprc, 5454 "Multicast Packets Received"); 5455 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "rx_frames_64", 5456 CTLFLAG_RD, &adapter->stats.prc64, 5457 "64 byte frames received "); 5458 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "rx_frames_65_127", 5459 CTLFLAG_RD, &adapter->stats.prc127, 5460 "65-127 byte frames received"); 5461 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "rx_frames_128_255", 5462 CTLFLAG_RD, &adapter->stats.prc255, 5463 "128-255 byte frames received"); 5464 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "rx_frames_256_511", 5465 CTLFLAG_RD, &adapter->stats.prc511, 5466 "256-511 byte frames received"); 5467 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "rx_frames_512_1023", 5468 CTLFLAG_RD, &adapter->stats.prc1023, 5469 "512-1023 byte frames received"); 5470 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "rx_frames_1024_1522", 5471 CTLFLAG_RD, &adapter->stats.prc1522, 5472 "1023-1522 byte frames received"); 5473 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "good_octets_recvd", 5474 CTLFLAG_RD, &adapter->stats.gorc, 5475 "Good Octets Received"); 5476 5477 /* Packet Transmission Stats */ 5478 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "good_octets_txd", 5479 CTLFLAG_RD, &adapter->stats.gotc, 5480 "Good Octets Transmitted"); 5481 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "total_pkts_txd", 5482 CTLFLAG_RD, &adapter->stats.tpt, 5483 "Total Packets Transmitted"); 5484 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "good_pkts_txd", 5485 CTLFLAG_RD, &adapter->stats.gptc, 5486 "Good Packets Transmitted"); 5487 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "bcast_pkts_txd", 5488 CTLFLAG_RD, &adapter->stats.bptc, 5489 "Broadcast Packets Transmitted"); 5490 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "mcast_pkts_txd", 5491 CTLFLAG_RD, &adapter->stats.mptc, 5492 "Multicast Packets Transmitted"); 5493 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "tx_frames_64", 5494 CTLFLAG_RD, &adapter->stats.ptc64, 5495 "64 byte frames transmitted "); 5496 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "tx_frames_65_127", 5497 CTLFLAG_RD, &adapter->stats.ptc127, 5498 "65-127 byte frames transmitted"); 5499 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "tx_frames_128_255", 5500 CTLFLAG_RD, &adapter->stats.ptc255, 5501 "128-255 byte frames transmitted"); 5502 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "tx_frames_256_511", 5503 CTLFLAG_RD, &adapter->stats.ptc511, 5504 "256-511 byte frames transmitted"); 5505 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "tx_frames_512_1023", 5506 CTLFLAG_RD, &adapter->stats.ptc1023, 5507 "512-1023 byte frames transmitted"); 5508 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "tx_frames_1024_1522", 5509 CTLFLAG_RD, &adapter->stats.ptc1522, 5510 "1024-1522 byte frames transmitted"); 5511 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "tso_txd", 5512 CTLFLAG_RD, &adapter->stats.tsctc, 5513 "TSO Contexts Transmitted"); 5514 SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "tso_ctx_fail", 5515 CTLFLAG_RD, &adapter->stats.tsctfc, 5516 "TSO Contexts Failed"); 5517 5518 5519 /* Interrupt Stats */ 5520 5521 int_node = SYSCTL_ADD_NODE(ctx, child, OID_AUTO, "interrupts", 5522 CTLFLAG_RD, NULL, "Interrupt Statistics"); 5523 int_list = SYSCTL_CHILDREN(int_node); 5524 5525 SYSCTL_ADD_UQUAD(ctx, int_list, OID_AUTO, "asserts", 5526 CTLFLAG_RD, &adapter->stats.iac, 5527 "Interrupt Assertion Count"); 5528 5529 SYSCTL_ADD_UQUAD(ctx, int_list, OID_AUTO, "rx_pkt_timer", 5530 CTLFLAG_RD, &adapter->stats.icrxptc, 5531 "Interrupt Cause Rx Pkt Timer Expire Count"); 5532 5533 SYSCTL_ADD_UQUAD(ctx, int_list, OID_AUTO, "rx_abs_timer", 5534 CTLFLAG_RD, &adapter->stats.icrxatc, 5535 "Interrupt Cause Rx Abs Timer Expire Count"); 5536 5537 SYSCTL_ADD_UQUAD(ctx, int_list, OID_AUTO, "tx_pkt_timer", 5538 CTLFLAG_RD, &adapter->stats.ictxptc, 5539 "Interrupt Cause Tx Pkt Timer Expire Count"); 5540 5541 SYSCTL_ADD_UQUAD(ctx, int_list, OID_AUTO, "tx_abs_timer", 5542 CTLFLAG_RD, &adapter->stats.ictxatc, 5543 "Interrupt Cause Tx Abs Timer Expire Count"); 5544 5545 SYSCTL_ADD_UQUAD(ctx, int_list, OID_AUTO, "tx_queue_empty", 5546 CTLFLAG_RD, &adapter->stats.ictxqec, 5547 "Interrupt Cause Tx Queue Empty Count"); 5548 5549 SYSCTL_ADD_UQUAD(ctx, int_list, OID_AUTO, "tx_queue_min_thresh", 5550 CTLFLAG_RD, &adapter->stats.ictxqmtc, 5551 "Interrupt Cause Tx Queue Min Thresh Count"); 5552 5553 SYSCTL_ADD_UQUAD(ctx, int_list, OID_AUTO, "rx_desc_min_thresh", 5554 CTLFLAG_RD, &adapter->stats.icrxdmtc, 5555 "Interrupt Cause Rx Desc Min Thresh Count"); 5556 5557 SYSCTL_ADD_UQUAD(ctx, int_list, OID_AUTO, "rx_overrun", 5558 CTLFLAG_RD, &adapter->stats.icrxoc, 5559 "Interrupt Cause Receiver Overrun Count"); 5560 } 5561 5562 /********************************************************************** 5563 * 5564 * This routine provides a way to dump out the adapter eeprom, 5565 * often a useful debug/service tool. This only dumps the first 5566 * 32 words, stuff that matters is in that extent. 5567 * 5568 **********************************************************************/ 5569 static int 5570 em_sysctl_nvm_info(SYSCTL_HANDLER_ARGS) 5571 { 5572 struct adapter *adapter = (struct adapter *)arg1; 5573 int error; 5574 int result; 5575 5576 result = -1; 5577 error = sysctl_handle_int(oidp, &result, 0, req); 5578 5579 if (error || !req->newptr) 5580 return (error); 5581 5582 /* 5583 * This value will cause a hex dump of the 5584 * first 32 16-bit words of the EEPROM to 5585 * the screen. 5586 */ 5587 if (result == 1) 5588 em_print_nvm_info(adapter); 5589 5590 return (error); 5591 } 5592 5593 static void 5594 em_print_nvm_info(struct adapter *adapter) 5595 { 5596 u16 eeprom_data; 5597 int i, j, row = 0; 5598 5599 /* Its a bit crude, but it gets the job done */ 5600 printf("\nInterface EEPROM Dump:\n"); 5601 printf("Offset\n0x0000 "); 5602 for (i = 0, j = 0; i < 32; i++, j++) { 5603 if (j == 8) { /* Make the offset block */ 5604 j = 0; ++row; 5605 printf("\n0x00%x0 ",row); 5606 } 5607 e1000_read_nvm(&adapter->hw, i, 1, &eeprom_data); 5608 printf("%04x ", eeprom_data); 5609 } 5610 printf("\n"); 5611 } 5612 5613 static int 5614 em_sysctl_int_delay(SYSCTL_HANDLER_ARGS) 5615 { 5616 struct em_int_delay_info *info; 5617 struct adapter *adapter; 5618 u32 regval; 5619 int error, usecs, ticks; 5620 5621 info = (struct em_int_delay_info *)arg1; 5622 usecs = info->value; 5623 error = sysctl_handle_int(oidp, &usecs, 0, req); 5624 if (error != 0 || req->newptr == NULL) 5625 return (error); 5626 if (usecs < 0 || usecs > EM_TICKS_TO_USECS(65535)) 5627 return (EINVAL); 5628 info->value = usecs; 5629 ticks = EM_USECS_TO_TICKS(usecs); 5630 if (info->offset == E1000_ITR) /* units are 256ns here */ 5631 ticks *= 4; 5632 5633 adapter = info->adapter; 5634 5635 EM_CORE_LOCK(adapter); 5636 regval = E1000_READ_OFFSET(&adapter->hw, info->offset); 5637 regval = (regval & ~0xffff) | (ticks & 0xffff); 5638 /* Handle a few special cases. */ 5639 switch (info->offset) { 5640 case E1000_RDTR: 5641 break; 5642 case E1000_TIDV: 5643 if (ticks == 0) { 5644 adapter->txd_cmd &= ~E1000_TXD_CMD_IDE; 5645 /* Don't write 0 into the TIDV register. */ 5646 regval++; 5647 } else 5648 adapter->txd_cmd |= E1000_TXD_CMD_IDE; 5649 break; 5650 } 5651 E1000_WRITE_OFFSET(&adapter->hw, info->offset, regval); 5652 EM_CORE_UNLOCK(adapter); 5653 return (0); 5654 } 5655 5656 static void 5657 em_add_int_delay_sysctl(struct adapter *adapter, const char *name, 5658 const char *description, struct em_int_delay_info *info, 5659 int offset, int value) 5660 { 5661 info->adapter = adapter; 5662 info->offset = offset; 5663 info->value = value; 5664 SYSCTL_ADD_PROC(device_get_sysctl_ctx(adapter->dev), 5665 SYSCTL_CHILDREN(device_get_sysctl_tree(adapter->dev)), 5666 OID_AUTO, name, CTLTYPE_INT|CTLFLAG_RW, 5667 info, 0, em_sysctl_int_delay, "I", description); 5668 } 5669 5670 static void 5671 em_set_sysctl_value(struct adapter *adapter, const char *name, 5672 const char *description, int *limit, int value) 5673 { 5674 *limit = value; 5675 SYSCTL_ADD_INT(device_get_sysctl_ctx(adapter->dev), 5676 SYSCTL_CHILDREN(device_get_sysctl_tree(adapter->dev)), 5677 OID_AUTO, name, CTLTYPE_INT|CTLFLAG_RW, limit, value, description); 5678 } 5679 5680 5681 /* 5682 ** Set flow control using sysctl: 5683 ** Flow control values: 5684 ** 0 - off 5685 ** 1 - rx pause 5686 ** 2 - tx pause 5687 ** 3 - full 5688 */ 5689 static int 5690 em_set_flowcntl(SYSCTL_HANDLER_ARGS) 5691 { 5692 int error; 5693 static int input = 3; /* default is full */ 5694 struct adapter *adapter = (struct adapter *) arg1; 5695 5696 error = sysctl_handle_int(oidp, &input, 0, req); 5697 5698 if ((error) || (req->newptr == NULL)) 5699 return (error); 5700 5701 if (input == adapter->fc) /* no change? */ 5702 return (error); 5703 5704 switch (input) { 5705 case e1000_fc_rx_pause: 5706 case e1000_fc_tx_pause: 5707 case e1000_fc_full: 5708 case e1000_fc_none: 5709 adapter->hw.fc.requested_mode = input; 5710 adapter->fc = input; 5711 break; 5712 default: 5713 /* Do nothing */ 5714 return (error); 5715 } 5716 5717 adapter->hw.fc.current_mode = adapter->hw.fc.requested_mode; 5718 e1000_force_mac_fc(&adapter->hw); 5719 return (error); 5720 } 5721 5722 /* 5723 ** Manage Energy Efficient Ethernet: 5724 ** Control values: 5725 ** 0/1 - enabled/disabled 5726 */ 5727 static int 5728 em_sysctl_eee(SYSCTL_HANDLER_ARGS) 5729 { 5730 struct adapter *adapter = (struct adapter *) arg1; 5731 int error, value; 5732 5733 value = adapter->hw.dev_spec.ich8lan.eee_disable; 5734 error = sysctl_handle_int(oidp, &value, 0, req); 5735 if (error || req->newptr == NULL) 5736 return (error); 5737 EM_CORE_LOCK(adapter); 5738 adapter->hw.dev_spec.ich8lan.eee_disable = (value != 0); 5739 em_init_locked(adapter); 5740 EM_CORE_UNLOCK(adapter); 5741 return (0); 5742 } 5743 5744 static int 5745 em_sysctl_debug_info(SYSCTL_HANDLER_ARGS) 5746 { 5747 struct adapter *adapter; 5748 int error; 5749 int result; 5750 5751 result = -1; 5752 error = sysctl_handle_int(oidp, &result, 0, req); 5753 5754 if (error || !req->newptr) 5755 return (error); 5756 5757 if (result == 1) { 5758 adapter = (struct adapter *)arg1; 5759 em_print_debug_info(adapter); 5760 } 5761 5762 return (error); 5763 } 5764 5765 /* 5766 ** This routine is meant to be fluid, add whatever is 5767 ** needed for debugging a problem. -jfv 5768 */ 5769 static void 5770 em_print_debug_info(struct adapter *adapter) 5771 { 5772 device_t dev = adapter->dev; 5773 struct tx_ring *txr = adapter->tx_rings; 5774 struct rx_ring *rxr = adapter->rx_rings; 5775 5776 if (adapter->ifp->if_drv_flags & IFF_DRV_RUNNING) 5777 printf("Interface is RUNNING "); 5778 else 5779 printf("Interface is NOT RUNNING\n"); 5780 5781 if (adapter->ifp->if_drv_flags & IFF_DRV_OACTIVE) 5782 printf("and INACTIVE\n"); 5783 else 5784 printf("and ACTIVE\n"); 5785 5786 device_printf(dev, "hw tdh = %d, hw tdt = %d\n", 5787 E1000_READ_REG(&adapter->hw, E1000_TDH(0)), 5788 E1000_READ_REG(&adapter->hw, E1000_TDT(0))); 5789 device_printf(dev, "hw rdh = %d, hw rdt = %d\n", 5790 E1000_READ_REG(&adapter->hw, E1000_RDH(0)), 5791 E1000_READ_REG(&adapter->hw, E1000_RDT(0))); 5792 device_printf(dev, "Tx Queue Status = %d\n", txr->queue_status); 5793 device_printf(dev, "TX descriptors avail = %d\n", 5794 txr->tx_avail); 5795 device_printf(dev, "Tx Descriptors avail failure = %ld\n", 5796 txr->no_desc_avail); 5797 device_printf(dev, "RX discarded packets = %ld\n", 5798 rxr->rx_discarded); 5799 device_printf(dev, "RX Next to Check = %d\n", rxr->next_to_check); 5800 device_printf(dev, "RX Next to Refresh = %d\n", rxr->next_to_refresh); 5801 } 5802