if_sriov.c revision 1.1
1 /****************************************************************************** 2 3 Copyright (c) 2001-2017, 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: head/sys/dev/ixgbe/if_sriov.c 320688 2017-07-05 17:27:03Z erj $*/ 34 35 #include "ixgbe.h" 36 37 #ifdef PCI_IOV 38 39 MALLOC_DEFINE(M_IXGBE_SRIOV, "ix_sriov", "ix SR-IOV allocations"); 40 41 /************************************************************************ 42 * ixgbe_pci_iov_detach 43 ************************************************************************/ 44 int 45 ixgbe_pci_iov_detach(device_t dev) 46 { 47 return pci_iov_detach(dev); 48 } 49 50 /************************************************************************ 51 * ixgbe_define_iov_schemas 52 ************************************************************************/ 53 void 54 ixgbe_define_iov_schemas(device_t dev, int *error) 55 { 56 nvlist_t *pf_schema, *vf_schema; 57 58 pf_schema = pci_iov_schema_alloc_node(); 59 vf_schema = pci_iov_schema_alloc_node(); 60 pci_iov_schema_add_unicast_mac(vf_schema, "mac-addr", 0, NULL); 61 pci_iov_schema_add_bool(vf_schema, "mac-anti-spoof", 62 IOV_SCHEMA_HASDEFAULT, TRUE); 63 pci_iov_schema_add_bool(vf_schema, "allow-set-mac", 64 IOV_SCHEMA_HASDEFAULT, FALSE); 65 pci_iov_schema_add_bool(vf_schema, "allow-promisc", 66 IOV_SCHEMA_HASDEFAULT, FALSE); 67 *error = pci_iov_attach(dev, pf_schema, vf_schema); 68 if (*error != 0) { 69 device_printf(dev, 70 "Error %d setting up SR-IOV\n", *error); 71 } 72 } /* ixgbe_define_iov_schemas */ 73 74 /************************************************************************ 75 * ixgbe_align_all_queue_indices 76 ************************************************************************/ 77 inline void 78 ixgbe_align_all_queue_indices(struct adapter *adapter) 79 { 80 int i; 81 int index; 82 83 for (i = 0; i < adapter->num_queues; i++) { 84 index = ixgbe_vf_que_index(adapter->iov_mode, adapter->pool, i); 85 adapter->rx_rings[i].me = index; 86 adapter->tx_rings[i].me = index; 87 } 88 } 89 90 /* Support functions for SR-IOV/VF management */ 91 static inline void 92 ixgbe_send_vf_msg(struct adapter *adapter, struct ixgbe_vf *vf, u32 msg) 93 { 94 if (vf->flags & IXGBE_VF_CTS) 95 msg |= IXGBE_VT_MSGTYPE_CTS; 96 97 adapter->hw.mbx.ops.write(&adapter->hw, &msg, 1, vf->pool); 98 } 99 100 static inline void 101 ixgbe_send_vf_ack(struct adapter *adapter, struct ixgbe_vf *vf, u32 msg) 102 { 103 msg &= IXGBE_VT_MSG_MASK; 104 ixgbe_send_vf_msg(adapter, vf, msg | IXGBE_VT_MSGTYPE_ACK); 105 } 106 107 static inline void 108 ixgbe_send_vf_nack(struct adapter *adapter, struct ixgbe_vf *vf, u32 msg) 109 { 110 msg &= IXGBE_VT_MSG_MASK; 111 ixgbe_send_vf_msg(adapter, vf, msg | IXGBE_VT_MSGTYPE_NACK); 112 } 113 114 static inline void 115 ixgbe_process_vf_ack(struct adapter *adapter, struct ixgbe_vf *vf) 116 { 117 if (!(vf->flags & IXGBE_VF_CTS)) 118 ixgbe_send_vf_nack(adapter, vf, 0); 119 } 120 121 static inline boolean_t 122 ixgbe_vf_mac_changed(struct ixgbe_vf *vf, const uint8_t *mac) 123 { 124 return (bcmp(mac, vf->ether_addr, ETHER_ADDR_LEN) != 0); 125 } 126 127 static inline int 128 ixgbe_vf_queues(int mode) 129 { 130 switch (mode) { 131 case IXGBE_64_VM: 132 return (2); 133 case IXGBE_32_VM: 134 return (4); 135 case IXGBE_NO_VM: 136 default: 137 return (0); 138 } 139 } 140 141 inline int 142 ixgbe_vf_que_index(int mode, int vfnum, int num) 143 { 144 return ((vfnum * ixgbe_vf_queues(mode)) + num); 145 } 146 147 static inline void 148 ixgbe_update_max_frame(struct adapter * adapter, int max_frame) 149 { 150 if (adapter->max_frame_size < max_frame) 151 adapter->max_frame_size = max_frame; 152 } 153 154 inline u32 155 ixgbe_get_mrqc(int iov_mode) 156 { 157 u32 mrqc; 158 159 switch (iov_mode) { 160 case IXGBE_64_VM: 161 mrqc = IXGBE_MRQC_VMDQRSS64EN; 162 break; 163 case IXGBE_32_VM: 164 mrqc = IXGBE_MRQC_VMDQRSS32EN; 165 break; 166 case IXGBE_NO_VM: 167 mrqc = 0; 168 break; 169 default: 170 panic("Unexpected SR-IOV mode %d", iov_mode); 171 } 172 173 return mrqc; 174 } 175 176 177 inline u32 178 ixgbe_get_mtqc(int iov_mode) 179 { 180 uint32_t mtqc; 181 182 switch (iov_mode) { 183 case IXGBE_64_VM: 184 mtqc = IXGBE_MTQC_64VF | IXGBE_MTQC_VT_ENA; 185 break; 186 case IXGBE_32_VM: 187 mtqc = IXGBE_MTQC_32VF | IXGBE_MTQC_VT_ENA; 188 break; 189 case IXGBE_NO_VM: 190 mtqc = IXGBE_MTQC_64Q_1PB; 191 break; 192 default: 193 panic("Unexpected SR-IOV mode %d", iov_mode); 194 } 195 196 return mtqc; 197 } 198 199 void 200 ixgbe_ping_all_vfs(struct adapter *adapter) 201 { 202 struct ixgbe_vf *vf; 203 204 for (int i = 0; i < adapter->num_vfs; i++) { 205 vf = &adapter->vfs[i]; 206 if (vf->flags & IXGBE_VF_ACTIVE) 207 ixgbe_send_vf_msg(adapter, vf, IXGBE_PF_CONTROL_MSG); 208 } 209 } /* ixgbe_ping_all_vfs */ 210 211 212 static void 213 ixgbe_vf_set_default_vlan(struct adapter *adapter, struct ixgbe_vf *vf, 214 uint16_t tag) 215 { 216 struct ixgbe_hw *hw; 217 uint32_t vmolr, vmvir; 218 219 hw = &adapter->hw; 220 221 vf->vlan_tag = tag; 222 223 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf->pool)); 224 225 /* Do not receive packets that pass inexact filters. */ 226 vmolr &= ~(IXGBE_VMOLR_ROMPE | IXGBE_VMOLR_ROPE); 227 228 /* Disable Multicast Promicuous Mode. */ 229 vmolr &= ~IXGBE_VMOLR_MPE; 230 231 /* Accept broadcasts. */ 232 vmolr |= IXGBE_VMOLR_BAM; 233 234 if (tag == 0) { 235 /* Accept non-vlan tagged traffic. */ 236 //vmolr |= IXGBE_VMOLR_AUPE; 237 238 /* Allow VM to tag outgoing traffic; no default tag. */ 239 vmvir = 0; 240 } else { 241 /* Require vlan-tagged traffic. */ 242 vmolr &= ~IXGBE_VMOLR_AUPE; 243 244 /* Tag all traffic with provided vlan tag. */ 245 vmvir = (tag | IXGBE_VMVIR_VLANA_DEFAULT); 246 } 247 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf->pool), vmolr); 248 IXGBE_WRITE_REG(hw, IXGBE_VMVIR(vf->pool), vmvir); 249 } /* ixgbe_vf_set_default_vlan */ 250 251 252 static boolean_t 253 ixgbe_vf_frame_size_compatible(struct adapter *adapter, struct ixgbe_vf *vf) 254 { 255 256 /* 257 * Frame size compatibility between PF and VF is only a problem on 258 * 82599-based cards. X540 and later support any combination of jumbo 259 * frames on PFs and VFs. 260 */ 261 if (adapter->hw.mac.type != ixgbe_mac_82599EB) 262 return (TRUE); 263 264 switch (vf->api_ver) { 265 case IXGBE_API_VER_1_0: 266 case IXGBE_API_VER_UNKNOWN: 267 /* 268 * On legacy (1.0 and older) VF versions, we don't support jumbo 269 * frames on either the PF or the VF. 270 */ 271 if (adapter->max_frame_size > ETHER_MAX_LEN || 272 vf->max_frame_size > ETHER_MAX_LEN) 273 return (FALSE); 274 275 return (TRUE); 276 277 break; 278 case IXGBE_API_VER_1_1: 279 default: 280 /* 281 * 1.1 or later VF versions always work if they aren't using 282 * jumbo frames. 283 */ 284 if (vf->max_frame_size <= ETHER_MAX_LEN) 285 return (TRUE); 286 287 /* 288 * Jumbo frames only work with VFs if the PF is also using jumbo 289 * frames. 290 */ 291 if (adapter->max_frame_size <= ETHER_MAX_LEN) 292 return (TRUE); 293 294 return (FALSE); 295 296 } 297 } /* ixgbe_vf_frame_size_compatible */ 298 299 300 static void 301 ixgbe_process_vf_reset(struct adapter *adapter, struct ixgbe_vf *vf) 302 { 303 ixgbe_vf_set_default_vlan(adapter, vf, vf->default_vlan); 304 305 // XXX clear multicast addresses 306 307 ixgbe_clear_rar(&adapter->hw, vf->rar_index); 308 309 vf->api_ver = IXGBE_API_VER_UNKNOWN; 310 } /* ixgbe_process_vf_reset */ 311 312 313 static void 314 ixgbe_vf_enable_transmit(struct adapter *adapter, struct ixgbe_vf *vf) 315 { 316 struct ixgbe_hw *hw; 317 uint32_t vf_index, vfte; 318 319 hw = &adapter->hw; 320 321 vf_index = IXGBE_VF_INDEX(vf->pool); 322 vfte = IXGBE_READ_REG(hw, IXGBE_VFTE(vf_index)); 323 vfte |= IXGBE_VF_BIT(vf->pool); 324 IXGBE_WRITE_REG(hw, IXGBE_VFTE(vf_index), vfte); 325 } /* ixgbe_vf_enable_transmit */ 326 327 328 static void 329 ixgbe_vf_enable_receive(struct adapter *adapter, struct ixgbe_vf *vf) 330 { 331 struct ixgbe_hw *hw; 332 uint32_t vf_index, vfre; 333 334 hw = &adapter->hw; 335 336 vf_index = IXGBE_VF_INDEX(vf->pool); 337 vfre = IXGBE_READ_REG(hw, IXGBE_VFRE(vf_index)); 338 if (ixgbe_vf_frame_size_compatible(adapter, vf)) 339 vfre |= IXGBE_VF_BIT(vf->pool); 340 else 341 vfre &= ~IXGBE_VF_BIT(vf->pool); 342 IXGBE_WRITE_REG(hw, IXGBE_VFRE(vf_index), vfre); 343 } /* ixgbe_vf_enable_receive */ 344 345 346 static void 347 ixgbe_vf_reset_msg(struct adapter *adapter, struct ixgbe_vf *vf, uint32_t *msg) 348 { 349 struct ixgbe_hw *hw; 350 uint32_t ack; 351 uint32_t resp[IXGBE_VF_PERMADDR_MSG_LEN]; 352 353 hw = &adapter->hw; 354 355 ixgbe_process_vf_reset(adapter, vf); 356 357 if (ixgbe_validate_mac_addr(vf->ether_addr) == 0) { 358 ixgbe_set_rar(&adapter->hw, vf->rar_index, vf->ether_addr, 359 vf->pool, TRUE); 360 ack = IXGBE_VT_MSGTYPE_ACK; 361 } else 362 ack = IXGBE_VT_MSGTYPE_NACK; 363 364 ixgbe_vf_enable_transmit(adapter, vf); 365 ixgbe_vf_enable_receive(adapter, vf); 366 367 vf->flags |= IXGBE_VF_CTS; 368 369 resp[0] = IXGBE_VF_RESET | ack | IXGBE_VT_MSGTYPE_CTS; 370 bcopy(vf->ether_addr, &resp[1], ETHER_ADDR_LEN); 371 resp[3] = hw->mac.mc_filter_type; 372 hw->mbx.ops.write(hw, resp, IXGBE_VF_PERMADDR_MSG_LEN, vf->pool); 373 } /* ixgbe_vf_reset_msg */ 374 375 376 static void 377 ixgbe_vf_set_mac(struct adapter *adapter, struct ixgbe_vf *vf, uint32_t *msg) 378 { 379 uint8_t *mac; 380 381 mac = (uint8_t*)&msg[1]; 382 383 /* Check that the VF has permission to change the MAC address. */ 384 if (!(vf->flags & IXGBE_VF_CAP_MAC) && ixgbe_vf_mac_changed(vf, mac)) { 385 ixgbe_send_vf_nack(adapter, vf, msg[0]); 386 return; 387 } 388 389 if (ixgbe_validate_mac_addr(mac) != 0) { 390 ixgbe_send_vf_nack(adapter, vf, msg[0]); 391 return; 392 } 393 394 bcopy(mac, vf->ether_addr, ETHER_ADDR_LEN); 395 396 ixgbe_set_rar(&adapter->hw, vf->rar_index, vf->ether_addr, vf->pool, 397 TRUE); 398 399 ixgbe_send_vf_ack(adapter, vf, msg[0]); 400 } /* ixgbe_vf_set_mac */ 401 402 403 /* 404 * VF multicast addresses are set by using the appropriate bit in 405 * 1 of 128 32 bit addresses (4096 possible). 406 */ 407 static void 408 ixgbe_vf_set_mc_addr(struct adapter *adapter, struct ixgbe_vf *vf, u32 *msg) 409 { 410 u16 *list = (u16*)&msg[1]; 411 int entries; 412 u32 vmolr, vec_bit, vec_reg, mta_reg; 413 414 entries = (msg[0] & IXGBE_VT_MSGINFO_MASK) >> IXGBE_VT_MSGINFO_SHIFT; 415 entries = min(entries, IXGBE_MAX_VF_MC); 416 417 vmolr = IXGBE_READ_REG(&adapter->hw, IXGBE_VMOLR(vf->pool)); 418 419 vf->num_mc_hashes = entries; 420 421 /* Set the appropriate MTA bit */ 422 for (int i = 0; i < entries; i++) { 423 vf->mc_hash[i] = list[i]; 424 vec_reg = (vf->mc_hash[i] >> 5) & 0x7F; 425 vec_bit = vf->mc_hash[i] & 0x1F; 426 mta_reg = IXGBE_READ_REG(&adapter->hw, IXGBE_MTA(vec_reg)); 427 mta_reg |= (1 << vec_bit); 428 IXGBE_WRITE_REG(&adapter->hw, IXGBE_MTA(vec_reg), mta_reg); 429 } 430 431 vmolr |= IXGBE_VMOLR_ROMPE; 432 IXGBE_WRITE_REG(&adapter->hw, IXGBE_VMOLR(vf->pool), vmolr); 433 ixgbe_send_vf_ack(adapter, vf, msg[0]); 434 } /* ixgbe_vf_set_mc_addr */ 435 436 437 static void 438 ixgbe_vf_set_vlan(struct adapter *adapter, struct ixgbe_vf *vf, uint32_t *msg) 439 { 440 struct ixgbe_hw *hw; 441 int enable; 442 uint16_t tag; 443 444 hw = &adapter->hw; 445 enable = IXGBE_VT_MSGINFO(msg[0]); 446 tag = msg[1] & IXGBE_VLVF_VLANID_MASK; 447 448 if (!(vf->flags & IXGBE_VF_CAP_VLAN)) { 449 ixgbe_send_vf_nack(adapter, vf, msg[0]); 450 return; 451 } 452 453 /* It is illegal to enable vlan tag 0. */ 454 if (tag == 0 && enable != 0){ 455 ixgbe_send_vf_nack(adapter, vf, msg[0]); 456 return; 457 } 458 459 ixgbe_set_vfta(hw, tag, vf->pool, enable, false); 460 ixgbe_send_vf_ack(adapter, vf, msg[0]); 461 } /* ixgbe_vf_set_vlan */ 462 463 464 static void 465 ixgbe_vf_set_lpe(struct adapter *adapter, struct ixgbe_vf *vf, uint32_t *msg) 466 { 467 struct ixgbe_hw *hw; 468 uint32_t vf_max_size, pf_max_size, mhadd; 469 470 hw = &adapter->hw; 471 vf_max_size = msg[1]; 472 473 if (vf_max_size < ETHER_CRC_LEN) { 474 /* We intentionally ACK invalid LPE requests. */ 475 ixgbe_send_vf_ack(adapter, vf, msg[0]); 476 return; 477 } 478 479 vf_max_size -= ETHER_CRC_LEN; 480 481 if (vf_max_size > IXGBE_MAX_FRAME_SIZE) { 482 /* We intentionally ACK invalid LPE requests. */ 483 ixgbe_send_vf_ack(adapter, vf, msg[0]); 484 return; 485 } 486 487 vf->max_frame_size = vf_max_size; 488 ixgbe_update_max_frame(adapter, vf->max_frame_size); 489 490 /* 491 * We might have to disable reception to this VF if the frame size is 492 * not compatible with the config on the PF. 493 */ 494 ixgbe_vf_enable_receive(adapter, vf); 495 496 mhadd = IXGBE_READ_REG(hw, IXGBE_MHADD); 497 pf_max_size = (mhadd & IXGBE_MHADD_MFS_MASK) >> IXGBE_MHADD_MFS_SHIFT; 498 499 if (pf_max_size < adapter->max_frame_size) { 500 mhadd &= ~IXGBE_MHADD_MFS_MASK; 501 mhadd |= adapter->max_frame_size << IXGBE_MHADD_MFS_SHIFT; 502 IXGBE_WRITE_REG(hw, IXGBE_MHADD, mhadd); 503 } 504 505 ixgbe_send_vf_ack(adapter, vf, msg[0]); 506 } /* ixgbe_vf_set_lpe */ 507 508 509 static void 510 ixgbe_vf_set_macvlan(struct adapter *adapter, struct ixgbe_vf *vf, 511 uint32_t *msg) 512 { 513 //XXX implement this 514 ixgbe_send_vf_nack(adapter, vf, msg[0]); 515 } /* ixgbe_vf_set_macvlan */ 516 517 518 static void 519 ixgbe_vf_api_negotiate(struct adapter *adapter, struct ixgbe_vf *vf, 520 uint32_t *msg) 521 { 522 523 switch (msg[1]) { 524 case IXGBE_API_VER_1_0: 525 case IXGBE_API_VER_1_1: 526 vf->api_ver = msg[1]; 527 ixgbe_send_vf_ack(adapter, vf, msg[0]); 528 break; 529 default: 530 vf->api_ver = IXGBE_API_VER_UNKNOWN; 531 ixgbe_send_vf_nack(adapter, vf, msg[0]); 532 break; 533 } 534 } /* ixgbe_vf_api_negotiate */ 535 536 537 static void 538 ixgbe_vf_get_queues(struct adapter *adapter, struct ixgbe_vf *vf, uint32_t *msg) 539 { 540 struct ixgbe_hw *hw; 541 uint32_t resp[IXGBE_VF_GET_QUEUES_RESP_LEN]; 542 int num_queues; 543 544 hw = &adapter->hw; 545 546 /* GET_QUEUES is not supported on pre-1.1 APIs. */ 547 switch (msg[0]) { 548 case IXGBE_API_VER_1_0: 549 case IXGBE_API_VER_UNKNOWN: 550 ixgbe_send_vf_nack(adapter, vf, msg[0]); 551 return; 552 } 553 554 resp[0] = IXGBE_VF_GET_QUEUES | IXGBE_VT_MSGTYPE_ACK | 555 IXGBE_VT_MSGTYPE_CTS; 556 557 num_queues = ixgbe_vf_queues(adapter->iov_mode); 558 resp[IXGBE_VF_TX_QUEUES] = num_queues; 559 resp[IXGBE_VF_RX_QUEUES] = num_queues; 560 resp[IXGBE_VF_TRANS_VLAN] = (vf->default_vlan != 0); 561 resp[IXGBE_VF_DEF_QUEUE] = 0; 562 563 hw->mbx.ops.write(hw, resp, IXGBE_VF_GET_QUEUES_RESP_LEN, vf->pool); 564 } /* ixgbe_vf_get_queues */ 565 566 567 static void 568 ixgbe_process_vf_msg(struct adapter *adapter, struct ixgbe_vf *vf) 569 { 570 struct ixgbe_hw *hw; 571 uint32_t msg[IXGBE_VFMAILBOX_SIZE]; 572 int error; 573 574 hw = &adapter->hw; 575 576 error = hw->mbx.ops.read(hw, msg, IXGBE_VFMAILBOX_SIZE, vf->pool); 577 578 if (error != 0) 579 return; 580 581 CTR3(KTR_MALLOC, "%s: received msg %x from %d", 582 adapter->ifp->if_xname, msg[0], vf->pool); 583 if (msg[0] == IXGBE_VF_RESET) { 584 ixgbe_vf_reset_msg(adapter, vf, msg); 585 return; 586 } 587 588 if (!(vf->flags & IXGBE_VF_CTS)) { 589 ixgbe_send_vf_nack(adapter, vf, msg[0]); 590 return; 591 } 592 593 switch (msg[0] & IXGBE_VT_MSG_MASK) { 594 case IXGBE_VF_SET_MAC_ADDR: 595 ixgbe_vf_set_mac(adapter, vf, msg); 596 break; 597 case IXGBE_VF_SET_MULTICAST: 598 ixgbe_vf_set_mc_addr(adapter, vf, msg); 599 break; 600 case IXGBE_VF_SET_VLAN: 601 ixgbe_vf_set_vlan(adapter, vf, msg); 602 break; 603 case IXGBE_VF_SET_LPE: 604 ixgbe_vf_set_lpe(adapter, vf, msg); 605 break; 606 case IXGBE_VF_SET_MACVLAN: 607 ixgbe_vf_set_macvlan(adapter, vf, msg); 608 break; 609 case IXGBE_VF_API_NEGOTIATE: 610 ixgbe_vf_api_negotiate(adapter, vf, msg); 611 break; 612 case IXGBE_VF_GET_QUEUES: 613 ixgbe_vf_get_queues(adapter, vf, msg); 614 break; 615 default: 616 ixgbe_send_vf_nack(adapter, vf, msg[0]); 617 } 618 } /* ixgbe_process_vf_msg */ 619 620 621 /* Tasklet for handling VF -> PF mailbox messages */ 622 void 623 ixgbe_handle_mbx(void *context, int pending) 624 { 625 struct adapter *adapter; 626 struct ixgbe_hw *hw; 627 struct ixgbe_vf *vf; 628 int i; 629 630 adapter = context; 631 hw = &adapter->hw; 632 633 IXGBE_CORE_LOCK(adapter); 634 for (i = 0; i < adapter->num_vfs; i++) { 635 vf = &adapter->vfs[i]; 636 637 if (vf->flags & IXGBE_VF_ACTIVE) { 638 if (hw->mbx.ops.check_for_rst(hw, vf->pool) == 0) 639 ixgbe_process_vf_reset(adapter, vf); 640 641 if (hw->mbx.ops.check_for_msg(hw, vf->pool) == 0) 642 ixgbe_process_vf_msg(adapter, vf); 643 644 if (hw->mbx.ops.check_for_ack(hw, vf->pool) == 0) 645 ixgbe_process_vf_ack(adapter, vf); 646 } 647 } 648 IXGBE_CORE_UNLOCK(adapter); 649 } /* ixgbe_handle_mbx */ 650 651 int 652 ixgbe_init_iov(device_t dev, u16 num_vfs, const nvlist_t *config) 653 { 654 struct adapter *adapter; 655 int retval = 0; 656 657 adapter = device_get_softc(dev); 658 adapter->iov_mode = IXGBE_NO_VM; 659 660 if (num_vfs == 0) { 661 /* Would we ever get num_vfs = 0? */ 662 retval = EINVAL; 663 goto err_init_iov; 664 } 665 666 /* 667 * We've got to reserve a VM's worth of queues for the PF, 668 * thus we go into "64 VF mode" if 32+ VFs are requested. 669 * With 64 VFs, you can only have two queues per VF. 670 * With 32 VFs, you can have up to four queues per VF. 671 */ 672 if (num_vfs >= IXGBE_32_VM) 673 adapter->iov_mode = IXGBE_64_VM; 674 else 675 adapter->iov_mode = IXGBE_32_VM; 676 677 /* Again, reserving 1 VM's worth of queues for the PF */ 678 adapter->pool = adapter->iov_mode - 1; 679 680 if ((num_vfs > adapter->pool) || (num_vfs >= IXGBE_64_VM)) { 681 retval = ENOSPC; 682 goto err_init_iov; 683 } 684 685 IXGBE_CORE_LOCK(adapter); 686 687 adapter->vfs = malloc(sizeof(*adapter->vfs) * num_vfs, M_IXGBE_SRIOV, 688 M_NOWAIT | M_ZERO); 689 690 if (adapter->vfs == NULL) { 691 retval = ENOMEM; 692 IXGBE_CORE_UNLOCK(adapter); 693 goto err_init_iov; 694 } 695 696 adapter->num_vfs = num_vfs; 697 adapter->init_locked(adapter); 698 adapter->feat_en |= IXGBE_FEATURE_SRIOV; 699 700 IXGBE_CORE_UNLOCK(adapter); 701 702 return retval; 703 704 err_init_iov: 705 adapter->num_vfs = 0; 706 adapter->pool = 0; 707 adapter->iov_mode = IXGBE_NO_VM; 708 709 return retval; 710 } /* ixgbe_init_iov */ 711 712 void 713 ixgbe_uninit_iov(device_t dev) 714 { 715 struct ixgbe_hw *hw; 716 struct adapter *adapter; 717 uint32_t pf_reg, vf_reg; 718 719 adapter = device_get_softc(dev); 720 hw = &adapter->hw; 721 722 IXGBE_CORE_LOCK(adapter); 723 724 /* Enable rx/tx for the PF and disable it for all VFs. */ 725 pf_reg = IXGBE_VF_INDEX(adapter->pool); 726 IXGBE_WRITE_REG(hw, IXGBE_VFRE(pf_reg), IXGBE_VF_BIT(adapter->pool)); 727 IXGBE_WRITE_REG(hw, IXGBE_VFTE(pf_reg), IXGBE_VF_BIT(adapter->pool)); 728 729 if (pf_reg == 0) 730 vf_reg = 1; 731 else 732 vf_reg = 0; 733 IXGBE_WRITE_REG(hw, IXGBE_VFRE(vf_reg), 0); 734 IXGBE_WRITE_REG(hw, IXGBE_VFTE(vf_reg), 0); 735 736 IXGBE_WRITE_REG(hw, IXGBE_VT_CTL, 0); 737 738 free(adapter->vfs, M_IXGBE_SRIOV); 739 adapter->vfs = NULL; 740 adapter->num_vfs = 0; 741 adapter->feat_en &= ~IXGBE_FEATURE_SRIOV; 742 743 IXGBE_CORE_UNLOCK(adapter); 744 } /* ixgbe_uninit_iov */ 745 746 static void 747 ixgbe_init_vf(struct adapter *adapter, struct ixgbe_vf *vf) 748 { 749 struct ixgbe_hw *hw; 750 uint32_t vf_index, pfmbimr; 751 752 IXGBE_CORE_LOCK_ASSERT(adapter); 753 754 hw = &adapter->hw; 755 756 if (!(vf->flags & IXGBE_VF_ACTIVE)) 757 return; 758 759 vf_index = IXGBE_VF_INDEX(vf->pool); 760 pfmbimr = IXGBE_READ_REG(hw, IXGBE_PFMBIMR(vf_index)); 761 pfmbimr |= IXGBE_VF_BIT(vf->pool); 762 IXGBE_WRITE_REG(hw, IXGBE_PFMBIMR(vf_index), pfmbimr); 763 764 ixgbe_vf_set_default_vlan(adapter, vf, vf->vlan_tag); 765 766 // XXX multicast addresses 767 768 if (ixgbe_validate_mac_addr(vf->ether_addr) == 0) { 769 ixgbe_set_rar(&adapter->hw, vf->rar_index, 770 vf->ether_addr, vf->pool, TRUE); 771 } 772 773 ixgbe_vf_enable_transmit(adapter, vf); 774 ixgbe_vf_enable_receive(adapter, vf); 775 776 ixgbe_send_vf_msg(adapter, vf, IXGBE_PF_CONTROL_MSG); 777 } /* ixgbe_init_vf */ 778 779 void 780 ixgbe_initialize_iov(struct adapter *adapter) 781 { 782 struct ixgbe_hw *hw = &adapter->hw; 783 uint32_t mrqc, mtqc, vt_ctl, vf_reg, gcr_ext, gpie; 784 int i; 785 786 if (adapter->iov_mode == IXGBE_NO_VM) 787 return; 788 789 IXGBE_CORE_LOCK_ASSERT(adapter); 790 791 /* RMW appropriate registers based on IOV mode */ 792 /* Read... */ 793 mrqc = IXGBE_READ_REG(hw, IXGBE_MRQC); 794 gcr_ext = IXGBE_READ_REG(hw, IXGBE_GCR_EXT); 795 gpie = IXGBE_READ_REG(hw, IXGBE_GPIE); 796 /* Modify... */ 797 mrqc &= ~IXGBE_MRQC_MRQE_MASK; 798 mtqc = IXGBE_MTQC_VT_ENA; /* No initial MTQC read needed */ 799 gcr_ext |= IXGBE_GCR_EXT_MSIX_EN; 800 gcr_ext &= ~IXGBE_GCR_EXT_VT_MODE_MASK; 801 gpie &= ~IXGBE_GPIE_VTMODE_MASK; 802 switch (adapter->iov_mode) { 803 case IXGBE_64_VM: 804 mrqc |= IXGBE_MRQC_VMDQRSS64EN; 805 mtqc |= IXGBE_MTQC_64VF; 806 gcr_ext |= IXGBE_GCR_EXT_VT_MODE_64; 807 gpie |= IXGBE_GPIE_VTMODE_64; 808 break; 809 case IXGBE_32_VM: 810 mrqc |= IXGBE_MRQC_VMDQRSS32EN; 811 mtqc |= IXGBE_MTQC_32VF; 812 gcr_ext |= IXGBE_GCR_EXT_VT_MODE_32; 813 gpie |= IXGBE_GPIE_VTMODE_32; 814 break; 815 default: 816 panic("Unexpected SR-IOV mode %d", adapter->iov_mode); 817 } 818 /* Write... */ 819 IXGBE_WRITE_REG(hw, IXGBE_MRQC, mrqc); 820 IXGBE_WRITE_REG(hw, IXGBE_MTQC, mtqc); 821 IXGBE_WRITE_REG(hw, IXGBE_GCR_EXT, gcr_ext); 822 IXGBE_WRITE_REG(hw, IXGBE_GPIE, gpie); 823 824 /* Enable rx/tx for the PF. */ 825 vf_reg = IXGBE_VF_INDEX(adapter->pool); 826 IXGBE_WRITE_REG(hw, IXGBE_VFRE(vf_reg), IXGBE_VF_BIT(adapter->pool)); 827 IXGBE_WRITE_REG(hw, IXGBE_VFTE(vf_reg), IXGBE_VF_BIT(adapter->pool)); 828 829 /* Allow VM-to-VM communication. */ 830 IXGBE_WRITE_REG(hw, IXGBE_PFDTXGSWC, IXGBE_PFDTXGSWC_VT_LBEN); 831 832 vt_ctl = IXGBE_VT_CTL_VT_ENABLE | IXGBE_VT_CTL_REPLEN; 833 vt_ctl |= (adapter->pool << IXGBE_VT_CTL_POOL_SHIFT); 834 IXGBE_WRITE_REG(hw, IXGBE_VT_CTL, vt_ctl); 835 836 for (i = 0; i < adapter->num_vfs; i++) 837 ixgbe_init_vf(adapter, &adapter->vfs[i]); 838 } /* ixgbe_initialize_iov */ 839 840 841 /* Check the max frame setting of all active VF's */ 842 void 843 ixgbe_recalculate_max_frame(struct adapter *adapter) 844 { 845 struct ixgbe_vf *vf; 846 847 IXGBE_CORE_LOCK_ASSERT(adapter); 848 849 for (int i = 0; i < adapter->num_vfs; i++) { 850 vf = &adapter->vfs[i]; 851 if (vf->flags & IXGBE_VF_ACTIVE) 852 ixgbe_update_max_frame(adapter, vf->max_frame_size); 853 } 854 } /* ixgbe_recalculate_max_frame */ 855 856 int 857 ixgbe_add_vf(device_t dev, u16 vfnum, const nvlist_t *config) 858 { 859 struct adapter *adapter; 860 struct ixgbe_vf *vf; 861 const void *mac; 862 863 adapter = device_get_softc(dev); 864 865 KASSERT(vfnum < adapter->num_vfs, ("VF index %d is out of range %d", 866 vfnum, adapter->num_vfs)); 867 868 IXGBE_CORE_LOCK(adapter); 869 vf = &adapter->vfs[vfnum]; 870 vf->pool= vfnum; 871 872 /* RAR[0] is used by the PF so use vfnum + 1 for VF RAR. */ 873 vf->rar_index = vfnum + 1; 874 vf->default_vlan = 0; 875 vf->max_frame_size = ETHER_MAX_LEN; 876 ixgbe_update_max_frame(adapter, vf->max_frame_size); 877 878 if (nvlist_exists_binary(config, "mac-addr")) { 879 mac = nvlist_get_binary(config, "mac-addr", NULL); 880 bcopy(mac, vf->ether_addr, ETHER_ADDR_LEN); 881 if (nvlist_get_bool(config, "allow-set-mac")) 882 vf->flags |= IXGBE_VF_CAP_MAC; 883 } else 884 /* 885 * If the administrator has not specified a MAC address then 886 * we must allow the VF to choose one. 887 */ 888 vf->flags |= IXGBE_VF_CAP_MAC; 889 890 vf->flags |= IXGBE_VF_ACTIVE; 891 892 ixgbe_init_vf(adapter, vf); 893 IXGBE_CORE_UNLOCK(adapter); 894 895 return (0); 896 } /* ixgbe_add_vf */ 897 898 #else 899 900 void 901 ixgbe_handle_mbx(void *context, int pending) 902 { 903 UNREFERENCED_2PARAMETER(context, pending); 904 } /* ixgbe_handle_mbx */ 905 906 inline int 907 ixgbe_vf_que_index(int mode, int vfnum, int num) 908 { 909 UNREFERENCED_2PARAMETER(mode, vfnum); 910 911 return num; 912 } /* ixgbe_vf_que_index */ 913 914 #endif 915
Indexes created Fri Sep 26 20:09:58 GMT 2025