1 /******************************************************************************* 2 3 Intel 82599 Virtual Function driver 4 Copyright(c) 1999 - 2015 Intel Corporation. 5 6 This program is free software; you can redistribute it and/or modify it 7 under the terms and conditions of the GNU General Public License, 8 version 2, as published by the Free Software Foundation. 9 10 This program is distributed in the hope it will be useful, but WITHOUT 11 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 12 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 13 more details. 14 15 You should have received a copy of the GNU General Public License along with 16 this program; if not, see <http://www.gnu.org/licenses/>. 17 18 The full GNU General Public License is included in this distribution in 19 the file called "COPYING". 20 21 Contact Information: 22 e1000-devel Mailing List <e1000-devel@lists.sourceforge.net> 23 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 24 25 *******************************************************************************/ 26 27 #include "vf.h" 28 #include "ixgbevf.h" 29 30 /* On Hyper-V, to reset, we need to read from this offset 31 * from the PCI config space. This is the mechanism used on 32 * Hyper-V to support PF/VF communication. 33 */ 34 #define IXGBE_HV_RESET_OFFSET 0x201 35 36 static inline s32 ixgbevf_write_msg_read_ack(struct ixgbe_hw *hw, u32 *msg, 37 u32 *retmsg, u16 size) 38 { 39 struct ixgbe_mbx_info *mbx = &hw->mbx; 40 s32 retval = mbx->ops.write_posted(hw, msg, size); 41 42 if (retval) 43 return retval; 44 45 return mbx->ops.read_posted(hw, retmsg, size); 46 } 47 48 /** 49 * ixgbevf_start_hw_vf - Prepare hardware for Tx/Rx 50 * @hw: pointer to hardware structure 51 * 52 * Starts the hardware by filling the bus info structure and media type, clears 53 * all on chip counters, initializes receive address registers, multicast 54 * table, VLAN filter table, calls routine to set up link and flow control 55 * settings, and leaves transmit and receive units disabled and uninitialized 56 **/ 57 static s32 ixgbevf_start_hw_vf(struct ixgbe_hw *hw) 58 { 59 /* Clear adapter stopped flag */ 60 hw->adapter_stopped = false; 61 62 return 0; 63 } 64 65 /** 66 * ixgbevf_init_hw_vf - virtual function hardware initialization 67 * @hw: pointer to hardware structure 68 * 69 * Initialize the hardware by resetting the hardware and then starting 70 * the hardware 71 **/ 72 static s32 ixgbevf_init_hw_vf(struct ixgbe_hw *hw) 73 { 74 s32 status = hw->mac.ops.start_hw(hw); 75 76 hw->mac.ops.get_mac_addr(hw, hw->mac.addr); 77 78 return status; 79 } 80 81 /** 82 * ixgbevf_reset_hw_vf - Performs hardware reset 83 * @hw: pointer to hardware structure 84 * 85 * Resets the hardware by resetting the transmit and receive units, masks and 86 * clears all interrupts. 87 **/ 88 static s32 ixgbevf_reset_hw_vf(struct ixgbe_hw *hw) 89 { 90 struct ixgbe_mbx_info *mbx = &hw->mbx; 91 u32 timeout = IXGBE_VF_INIT_TIMEOUT; 92 s32 ret_val = IXGBE_ERR_INVALID_MAC_ADDR; 93 u32 msgbuf[IXGBE_VF_PERMADDR_MSG_LEN]; 94 u8 *addr = (u8 *)(&msgbuf[1]); 95 96 /* Call adapter stop to disable tx/rx and clear interrupts */ 97 hw->mac.ops.stop_adapter(hw); 98 99 /* reset the api version */ 100 hw->api_version = ixgbe_mbox_api_10; 101 102 IXGBE_WRITE_REG(hw, IXGBE_VFCTRL, IXGBE_CTRL_RST); 103 IXGBE_WRITE_FLUSH(hw); 104 105 /* we cannot reset while the RSTI / RSTD bits are asserted */ 106 while (!mbx->ops.check_for_rst(hw) && timeout) { 107 timeout--; 108 udelay(5); 109 } 110 111 if (!timeout) 112 return IXGBE_ERR_RESET_FAILED; 113 114 /* mailbox timeout can now become active */ 115 mbx->timeout = IXGBE_VF_MBX_INIT_TIMEOUT; 116 117 msgbuf[0] = IXGBE_VF_RESET; 118 mbx->ops.write_posted(hw, msgbuf, 1); 119 120 mdelay(10); 121 122 /* set our "perm_addr" based on info provided by PF 123 * also set up the mc_filter_type which is piggy backed 124 * on the mac address in word 3 125 */ 126 ret_val = mbx->ops.read_posted(hw, msgbuf, IXGBE_VF_PERMADDR_MSG_LEN); 127 if (ret_val) 128 return ret_val; 129 130 /* New versions of the PF may NACK the reset return message 131 * to indicate that no MAC address has yet been assigned for 132 * the VF. 133 */ 134 if (msgbuf[0] != (IXGBE_VF_RESET | IXGBE_VT_MSGTYPE_ACK) && 135 msgbuf[0] != (IXGBE_VF_RESET | IXGBE_VT_MSGTYPE_NACK)) 136 return IXGBE_ERR_INVALID_MAC_ADDR; 137 138 if (msgbuf[0] == (IXGBE_VF_RESET | IXGBE_VT_MSGTYPE_ACK)) 139 ether_addr_copy(hw->mac.perm_addr, addr); 140 141 hw->mac.mc_filter_type = msgbuf[IXGBE_VF_MC_TYPE_WORD]; 142 143 return 0; 144 } 145 146 /** 147 * Hyper-V variant; the VF/PF communication is through the PCI 148 * config space. 149 */ 150 static s32 ixgbevf_hv_reset_hw_vf(struct ixgbe_hw *hw) 151 { 152 #if IS_ENABLED(CONFIG_PCI_MMCONFIG) 153 struct ixgbevf_adapter *adapter = hw->back; 154 int i; 155 156 for (i = 0; i < 6; i++) 157 pci_read_config_byte(adapter->pdev, 158 (i + IXGBE_HV_RESET_OFFSET), 159 &hw->mac.perm_addr[i]); 160 return 0; 161 #else 162 pr_err("PCI_MMCONFIG needs to be enabled for Hyper-V\n"); 163 return -EOPNOTSUPP; 164 #endif 165 } 166 167 /** 168 * ixgbevf_stop_hw_vf - Generic stop Tx/Rx units 169 * @hw: pointer to hardware structure 170 * 171 * Sets the adapter_stopped flag within ixgbe_hw struct. Clears interrupts, 172 * disables transmit and receive units. The adapter_stopped flag is used by 173 * the shared code and drivers to determine if the adapter is in a stopped 174 * state and should not touch the hardware. 175 **/ 176 static s32 ixgbevf_stop_hw_vf(struct ixgbe_hw *hw) 177 { 178 u32 number_of_queues; 179 u32 reg_val; 180 u16 i; 181 182 /* Set the adapter_stopped flag so other driver functions stop touching 183 * the hardware 184 */ 185 hw->adapter_stopped = true; 186 187 /* Disable the receive unit by stopped each queue */ 188 number_of_queues = hw->mac.max_rx_queues; 189 for (i = 0; i < number_of_queues; i++) { 190 reg_val = IXGBE_READ_REG(hw, IXGBE_VFRXDCTL(i)); 191 if (reg_val & IXGBE_RXDCTL_ENABLE) { 192 reg_val &= ~IXGBE_RXDCTL_ENABLE; 193 IXGBE_WRITE_REG(hw, IXGBE_VFRXDCTL(i), reg_val); 194 } 195 } 196 197 IXGBE_WRITE_FLUSH(hw); 198 199 /* Clear interrupt mask to stop from interrupts being generated */ 200 IXGBE_WRITE_REG(hw, IXGBE_VTEIMC, IXGBE_VF_IRQ_CLEAR_MASK); 201 202 /* Clear any pending interrupts */ 203 IXGBE_READ_REG(hw, IXGBE_VTEICR); 204 205 /* Disable the transmit unit. Each queue must be disabled. */ 206 number_of_queues = hw->mac.max_tx_queues; 207 for (i = 0; i < number_of_queues; i++) { 208 reg_val = IXGBE_READ_REG(hw, IXGBE_VFTXDCTL(i)); 209 if (reg_val & IXGBE_TXDCTL_ENABLE) { 210 reg_val &= ~IXGBE_TXDCTL_ENABLE; 211 IXGBE_WRITE_REG(hw, IXGBE_VFTXDCTL(i), reg_val); 212 } 213 } 214 215 return 0; 216 } 217 218 /** 219 * ixgbevf_mta_vector - Determines bit-vector in multicast table to set 220 * @hw: pointer to hardware structure 221 * @mc_addr: the multicast address 222 * 223 * Extracts the 12 bits, from a multicast address, to determine which 224 * bit-vector to set in the multicast table. The hardware uses 12 bits, from 225 * incoming Rx multicast addresses, to determine the bit-vector to check in 226 * the MTA. Which of the 4 combination, of 12-bits, the hardware uses is set 227 * by the MO field of the MCSTCTRL. The MO field is set during initialization 228 * to mc_filter_type. 229 **/ 230 static s32 ixgbevf_mta_vector(struct ixgbe_hw *hw, u8 *mc_addr) 231 { 232 u32 vector = 0; 233 234 switch (hw->mac.mc_filter_type) { 235 case 0: /* use bits [47:36] of the address */ 236 vector = ((mc_addr[4] >> 4) | (((u16)mc_addr[5]) << 4)); 237 break; 238 case 1: /* use bits [46:35] of the address */ 239 vector = ((mc_addr[4] >> 3) | (((u16)mc_addr[5]) << 5)); 240 break; 241 case 2: /* use bits [45:34] of the address */ 242 vector = ((mc_addr[4] >> 2) | (((u16)mc_addr[5]) << 6)); 243 break; 244 case 3: /* use bits [43:32] of the address */ 245 vector = ((mc_addr[4]) | (((u16)mc_addr[5]) << 8)); 246 break; 247 default: /* Invalid mc_filter_type */ 248 break; 249 } 250 251 /* vector can only be 12-bits or boundary will be exceeded */ 252 vector &= 0xFFF; 253 return vector; 254 } 255 256 /** 257 * ixgbevf_get_mac_addr_vf - Read device MAC address 258 * @hw: pointer to the HW structure 259 * @mac_addr: pointer to storage for retrieved MAC address 260 **/ 261 static s32 ixgbevf_get_mac_addr_vf(struct ixgbe_hw *hw, u8 *mac_addr) 262 { 263 ether_addr_copy(mac_addr, hw->mac.perm_addr); 264 265 return 0; 266 } 267 268 static s32 ixgbevf_set_uc_addr_vf(struct ixgbe_hw *hw, u32 index, u8 *addr) 269 { 270 u32 msgbuf[3], msgbuf_chk; 271 u8 *msg_addr = (u8 *)(&msgbuf[1]); 272 s32 ret_val; 273 274 memset(msgbuf, 0, sizeof(msgbuf)); 275 /* If index is one then this is the start of a new list and needs 276 * indication to the PF so it can do it's own list management. 277 * If it is zero then that tells the PF to just clear all of 278 * this VF's macvlans and there is no new list. 279 */ 280 msgbuf[0] |= index << IXGBE_VT_MSGINFO_SHIFT; 281 msgbuf[0] |= IXGBE_VF_SET_MACVLAN; 282 msgbuf_chk = msgbuf[0]; 283 284 if (addr) 285 ether_addr_copy(msg_addr, addr); 286 287 ret_val = ixgbevf_write_msg_read_ack(hw, msgbuf, msgbuf, 288 sizeof(msgbuf) / sizeof(u32)); 289 if (!ret_val) { 290 msgbuf[0] &= ~IXGBE_VT_MSGTYPE_CTS; 291 292 if (msgbuf[0] == (msgbuf_chk | IXGBE_VT_MSGTYPE_NACK)) 293 return -ENOMEM; 294 } 295 296 return ret_val; 297 } 298 299 static s32 ixgbevf_hv_set_uc_addr_vf(struct ixgbe_hw *hw, u32 index, u8 *addr) 300 { 301 return -EOPNOTSUPP; 302 } 303 304 /** 305 * ixgbevf_get_reta_locked - get the RSS redirection table (RETA) contents. 306 * @adapter: pointer to the port handle 307 * @reta: buffer to fill with RETA contents. 308 * @num_rx_queues: Number of Rx queues configured for this port 309 * 310 * The "reta" buffer should be big enough to contain 32 registers. 311 * 312 * Returns: 0 on success. 313 * if API doesn't support this operation - (-EOPNOTSUPP). 314 */ 315 int ixgbevf_get_reta_locked(struct ixgbe_hw *hw, u32 *reta, int num_rx_queues) 316 { 317 int err, i, j; 318 u32 msgbuf[IXGBE_VFMAILBOX_SIZE]; 319 u32 *hw_reta = &msgbuf[1]; 320 u32 mask = 0; 321 322 /* We have to use a mailbox for 82599 and x540 devices only. 323 * For these devices RETA has 128 entries. 324 * Also these VFs support up to 4 RSS queues. Therefore PF will compress 325 * 16 RETA entries in each DWORD giving 2 bits to each entry. 326 */ 327 int dwords = IXGBEVF_82599_RETA_SIZE / 16; 328 329 /* We support the RSS querying for 82599 and x540 devices only. 330 * Thus return an error if API doesn't support RETA querying or querying 331 * is not supported for this device type. 332 */ 333 switch (hw->api_version) { 334 case ixgbe_mbox_api_13: 335 case ixgbe_mbox_api_12: 336 if (hw->mac.type < ixgbe_mac_X550_vf) 337 break; 338 /* fall through */ 339 default: 340 return -EOPNOTSUPP; 341 } 342 343 msgbuf[0] = IXGBE_VF_GET_RETA; 344 345 err = hw->mbx.ops.write_posted(hw, msgbuf, 1); 346 347 if (err) 348 return err; 349 350 err = hw->mbx.ops.read_posted(hw, msgbuf, dwords + 1); 351 352 if (err) 353 return err; 354 355 msgbuf[0] &= ~IXGBE_VT_MSGTYPE_CTS; 356 357 /* If the operation has been refused by a PF return -EPERM */ 358 if (msgbuf[0] == (IXGBE_VF_GET_RETA | IXGBE_VT_MSGTYPE_NACK)) 359 return -EPERM; 360 361 /* If we didn't get an ACK there must have been 362 * some sort of mailbox error so we should treat it 363 * as such. 364 */ 365 if (msgbuf[0] != (IXGBE_VF_GET_RETA | IXGBE_VT_MSGTYPE_ACK)) 366 return IXGBE_ERR_MBX; 367 368 /* ixgbevf doesn't support more than 2 queues at the moment */ 369 if (num_rx_queues > 1) 370 mask = 0x1; 371 372 for (i = 0; i < dwords; i++) 373 for (j = 0; j < 16; j++) 374 reta[i * 16 + j] = (hw_reta[i] >> (2 * j)) & mask; 375 376 return 0; 377 } 378 379 /** 380 * ixgbevf_get_rss_key_locked - get the RSS Random Key 381 * @hw: pointer to the HW structure 382 * @rss_key: buffer to fill with RSS Hash Key contents. 383 * 384 * The "rss_key" buffer should be big enough to contain 10 registers. 385 * 386 * Returns: 0 on success. 387 * if API doesn't support this operation - (-EOPNOTSUPP). 388 */ 389 int ixgbevf_get_rss_key_locked(struct ixgbe_hw *hw, u8 *rss_key) 390 { 391 int err; 392 u32 msgbuf[IXGBE_VFMAILBOX_SIZE]; 393 394 /* We currently support the RSS Random Key retrieval for 82599 and x540 395 * devices only. 396 * 397 * Thus return an error if API doesn't support RSS Random Key retrieval 398 * or if the operation is not supported for this device type. 399 */ 400 switch (hw->api_version) { 401 case ixgbe_mbox_api_13: 402 case ixgbe_mbox_api_12: 403 if (hw->mac.type < ixgbe_mac_X550_vf) 404 break; 405 /* fall through */ 406 default: 407 return -EOPNOTSUPP; 408 } 409 410 msgbuf[0] = IXGBE_VF_GET_RSS_KEY; 411 err = hw->mbx.ops.write_posted(hw, msgbuf, 1); 412 413 if (err) 414 return err; 415 416 err = hw->mbx.ops.read_posted(hw, msgbuf, 11); 417 418 if (err) 419 return err; 420 421 msgbuf[0] &= ~IXGBE_VT_MSGTYPE_CTS; 422 423 /* If the operation has been refused by a PF return -EPERM */ 424 if (msgbuf[0] == (IXGBE_VF_GET_RSS_KEY | IXGBE_VT_MSGTYPE_NACK)) 425 return -EPERM; 426 427 /* If we didn't get an ACK there must have been 428 * some sort of mailbox error so we should treat it 429 * as such. 430 */ 431 if (msgbuf[0] != (IXGBE_VF_GET_RSS_KEY | IXGBE_VT_MSGTYPE_ACK)) 432 return IXGBE_ERR_MBX; 433 434 memcpy(rss_key, msgbuf + 1, IXGBEVF_RSS_HASH_KEY_SIZE); 435 436 return 0; 437 } 438 439 /** 440 * ixgbevf_set_rar_vf - set device MAC address 441 * @hw: pointer to hardware structure 442 * @index: Receive address register to write 443 * @addr: Address to put into receive address register 444 * @vmdq: Unused in this implementation 445 **/ 446 static s32 ixgbevf_set_rar_vf(struct ixgbe_hw *hw, u32 index, u8 *addr, 447 u32 vmdq) 448 { 449 u32 msgbuf[3]; 450 u8 *msg_addr = (u8 *)(&msgbuf[1]); 451 s32 ret_val; 452 453 memset(msgbuf, 0, sizeof(msgbuf)); 454 msgbuf[0] = IXGBE_VF_SET_MAC_ADDR; 455 ether_addr_copy(msg_addr, addr); 456 457 ret_val = ixgbevf_write_msg_read_ack(hw, msgbuf, msgbuf, 458 sizeof(msgbuf) / sizeof(u32)); 459 460 msgbuf[0] &= ~IXGBE_VT_MSGTYPE_CTS; 461 462 /* if nacked the address was rejected, use "perm_addr" */ 463 if (!ret_val && 464 (msgbuf[0] == (IXGBE_VF_SET_MAC_ADDR | IXGBE_VT_MSGTYPE_NACK))) { 465 ixgbevf_get_mac_addr_vf(hw, hw->mac.addr); 466 return IXGBE_ERR_MBX; 467 } 468 469 return ret_val; 470 } 471 472 /** 473 * ixgbevf_hv_set_rar_vf - set device MAC address Hyper-V variant 474 * @hw: pointer to hardware structure 475 * @index: Receive address register to write 476 * @addr: Address to put into receive address register 477 * @vmdq: Unused in this implementation 478 * 479 * We don't really allow setting the device MAC address. However, 480 * if the address being set is the permanent MAC address we will 481 * permit that. 482 **/ 483 static s32 ixgbevf_hv_set_rar_vf(struct ixgbe_hw *hw, u32 index, u8 *addr, 484 u32 vmdq) 485 { 486 if (ether_addr_equal(addr, hw->mac.perm_addr)) 487 return 0; 488 489 return -EOPNOTSUPP; 490 } 491 492 /** 493 * ixgbevf_update_mc_addr_list_vf - Update Multicast addresses 494 * @hw: pointer to the HW structure 495 * @netdev: pointer to net device structure 496 * 497 * Updates the Multicast Table Array. 498 **/ 499 static s32 ixgbevf_update_mc_addr_list_vf(struct ixgbe_hw *hw, 500 struct net_device *netdev) 501 { 502 struct netdev_hw_addr *ha; 503 u32 msgbuf[IXGBE_VFMAILBOX_SIZE]; 504 u16 *vector_list = (u16 *)&msgbuf[1]; 505 u32 cnt, i; 506 507 /* Each entry in the list uses 1 16 bit word. We have 30 508 * 16 bit words available in our HW msg buffer (minus 1 for the 509 * msg type). That's 30 hash values if we pack 'em right. If 510 * there are more than 30 MC addresses to add then punt the 511 * extras for now and then add code to handle more than 30 later. 512 * It would be unusual for a server to request that many multi-cast 513 * addresses except for in large enterprise network environments. 514 */ 515 516 cnt = netdev_mc_count(netdev); 517 if (cnt > 30) 518 cnt = 30; 519 msgbuf[0] = IXGBE_VF_SET_MULTICAST; 520 msgbuf[0] |= cnt << IXGBE_VT_MSGINFO_SHIFT; 521 522 i = 0; 523 netdev_for_each_mc_addr(ha, netdev) { 524 if (i == cnt) 525 break; 526 if (is_link_local_ether_addr(ha->addr)) 527 continue; 528 529 vector_list[i++] = ixgbevf_mta_vector(hw, ha->addr); 530 } 531 532 ixgbevf_write_msg_read_ack(hw, msgbuf, msgbuf, IXGBE_VFMAILBOX_SIZE); 533 534 return 0; 535 } 536 537 /** 538 * Hyper-V variant - just a stub. 539 */ 540 static s32 ixgbevf_hv_update_mc_addr_list_vf(struct ixgbe_hw *hw, 541 struct net_device *netdev) 542 { 543 return -EOPNOTSUPP; 544 } 545 546 /** 547 * ixgbevf_update_xcast_mode - Update Multicast mode 548 * @hw: pointer to the HW structure 549 * @xcast_mode: new multicast mode 550 * 551 * Updates the Multicast Mode of VF. 552 **/ 553 static s32 ixgbevf_update_xcast_mode(struct ixgbe_hw *hw, int xcast_mode) 554 { 555 u32 msgbuf[2]; 556 s32 err; 557 558 switch (hw->api_version) { 559 case ixgbe_mbox_api_12: 560 /* promisc introduced in 1.3 version */ 561 if (xcast_mode == IXGBEVF_XCAST_MODE_PROMISC) 562 return -EOPNOTSUPP; 563 /* Fall threw */ 564 case ixgbe_mbox_api_13: 565 break; 566 default: 567 return -EOPNOTSUPP; 568 } 569 570 msgbuf[0] = IXGBE_VF_UPDATE_XCAST_MODE; 571 msgbuf[1] = xcast_mode; 572 573 err = ixgbevf_write_msg_read_ack(hw, msgbuf, msgbuf, 574 sizeof(msgbuf) / sizeof(u32)); 575 if (err) 576 return err; 577 578 msgbuf[0] &= ~IXGBE_VT_MSGTYPE_CTS; 579 if (msgbuf[0] == (IXGBE_VF_UPDATE_XCAST_MODE | IXGBE_VT_MSGTYPE_NACK)) 580 return -EPERM; 581 582 return 0; 583 } 584 585 /** 586 * Hyper-V variant - just a stub. 587 */ 588 static s32 ixgbevf_hv_update_xcast_mode(struct ixgbe_hw *hw, int xcast_mode) 589 { 590 return -EOPNOTSUPP; 591 } 592 593 /** 594 * ixgbevf_set_vfta_vf - Set/Unset VLAN filter table address 595 * @hw: pointer to the HW structure 596 * @vlan: 12 bit VLAN ID 597 * @vind: unused by VF drivers 598 * @vlan_on: if true then set bit, else clear bit 599 **/ 600 static s32 ixgbevf_set_vfta_vf(struct ixgbe_hw *hw, u32 vlan, u32 vind, 601 bool vlan_on) 602 { 603 u32 msgbuf[2]; 604 s32 err; 605 606 msgbuf[0] = IXGBE_VF_SET_VLAN; 607 msgbuf[1] = vlan; 608 /* Setting the 8 bit field MSG INFO to TRUE indicates "add" */ 609 msgbuf[0] |= vlan_on << IXGBE_VT_MSGINFO_SHIFT; 610 611 err = ixgbevf_write_msg_read_ack(hw, msgbuf, msgbuf, 612 sizeof(msgbuf) / sizeof(u32)); 613 if (err) 614 goto mbx_err; 615 616 /* remove extra bits from the message */ 617 msgbuf[0] &= ~IXGBE_VT_MSGTYPE_CTS; 618 msgbuf[0] &= ~(0xFF << IXGBE_VT_MSGINFO_SHIFT); 619 620 if (msgbuf[0] != (IXGBE_VF_SET_VLAN | IXGBE_VT_MSGTYPE_ACK)) 621 err = IXGBE_ERR_INVALID_ARGUMENT; 622 623 mbx_err: 624 return err; 625 } 626 627 /** 628 * Hyper-V variant - just a stub. 629 */ 630 static s32 ixgbevf_hv_set_vfta_vf(struct ixgbe_hw *hw, u32 vlan, u32 vind, 631 bool vlan_on) 632 { 633 return -EOPNOTSUPP; 634 } 635 636 /** 637 * ixgbevf_setup_mac_link_vf - Setup MAC link settings 638 * @hw: pointer to hardware structure 639 * @speed: Unused in this implementation 640 * @autoneg: Unused in this implementation 641 * @autoneg_wait_to_complete: Unused in this implementation 642 * 643 * Do nothing and return success. VF drivers are not allowed to change 644 * global settings. Maintained for driver compatibility. 645 **/ 646 static s32 ixgbevf_setup_mac_link_vf(struct ixgbe_hw *hw, 647 ixgbe_link_speed speed, bool autoneg, 648 bool autoneg_wait_to_complete) 649 { 650 return 0; 651 } 652 653 /** 654 * ixgbevf_check_mac_link_vf - Get link/speed status 655 * @hw: pointer to hardware structure 656 * @speed: pointer to link speed 657 * @link_up: true is link is up, false otherwise 658 * @autoneg_wait_to_complete: true when waiting for completion is needed 659 * 660 * Reads the links register to determine if link is up and the current speed 661 **/ 662 static s32 ixgbevf_check_mac_link_vf(struct ixgbe_hw *hw, 663 ixgbe_link_speed *speed, 664 bool *link_up, 665 bool autoneg_wait_to_complete) 666 { 667 struct ixgbe_mbx_info *mbx = &hw->mbx; 668 struct ixgbe_mac_info *mac = &hw->mac; 669 s32 ret_val = 0; 670 u32 links_reg; 671 u32 in_msg = 0; 672 673 /* If we were hit with a reset drop the link */ 674 if (!mbx->ops.check_for_rst(hw) || !mbx->timeout) 675 mac->get_link_status = true; 676 677 if (!mac->get_link_status) 678 goto out; 679 680 /* if link status is down no point in checking to see if pf is up */ 681 links_reg = IXGBE_READ_REG(hw, IXGBE_VFLINKS); 682 if (!(links_reg & IXGBE_LINKS_UP)) 683 goto out; 684 685 /* for SFP+ modules and DA cables on 82599 it can take up to 500usecs 686 * before the link status is correct 687 */ 688 if (mac->type == ixgbe_mac_82599_vf) { 689 int i; 690 691 for (i = 0; i < 5; i++) { 692 udelay(100); 693 links_reg = IXGBE_READ_REG(hw, IXGBE_VFLINKS); 694 695 if (!(links_reg & IXGBE_LINKS_UP)) 696 goto out; 697 } 698 } 699 700 switch (links_reg & IXGBE_LINKS_SPEED_82599) { 701 case IXGBE_LINKS_SPEED_10G_82599: 702 *speed = IXGBE_LINK_SPEED_10GB_FULL; 703 break; 704 case IXGBE_LINKS_SPEED_1G_82599: 705 *speed = IXGBE_LINK_SPEED_1GB_FULL; 706 break; 707 case IXGBE_LINKS_SPEED_100_82599: 708 *speed = IXGBE_LINK_SPEED_100_FULL; 709 break; 710 } 711 712 /* if the read failed it could just be a mailbox collision, best wait 713 * until we are called again and don't report an error 714 */ 715 if (mbx->ops.read(hw, &in_msg, 1)) 716 goto out; 717 718 if (!(in_msg & IXGBE_VT_MSGTYPE_CTS)) { 719 /* msg is not CTS and is NACK we must have lost CTS status */ 720 if (in_msg & IXGBE_VT_MSGTYPE_NACK) 721 ret_val = -1; 722 goto out; 723 } 724 725 /* the pf is talking, if we timed out in the past we reinit */ 726 if (!mbx->timeout) { 727 ret_val = -1; 728 goto out; 729 } 730 731 /* if we passed all the tests above then the link is up and we no 732 * longer need to check for link 733 */ 734 mac->get_link_status = false; 735 736 out: 737 *link_up = !mac->get_link_status; 738 return ret_val; 739 } 740 741 /** 742 * Hyper-V variant; there is no mailbox communication. 743 */ 744 static s32 ixgbevf_hv_check_mac_link_vf(struct ixgbe_hw *hw, 745 ixgbe_link_speed *speed, 746 bool *link_up, 747 bool autoneg_wait_to_complete) 748 { 749 struct ixgbe_mbx_info *mbx = &hw->mbx; 750 struct ixgbe_mac_info *mac = &hw->mac; 751 u32 links_reg; 752 753 /* If we were hit with a reset drop the link */ 754 if (!mbx->ops.check_for_rst(hw) || !mbx->timeout) 755 mac->get_link_status = true; 756 757 if (!mac->get_link_status) 758 goto out; 759 760 /* if link status is down no point in checking to see if pf is up */ 761 links_reg = IXGBE_READ_REG(hw, IXGBE_VFLINKS); 762 if (!(links_reg & IXGBE_LINKS_UP)) 763 goto out; 764 765 /* for SFP+ modules and DA cables on 82599 it can take up to 500usecs 766 * before the link status is correct 767 */ 768 if (mac->type == ixgbe_mac_82599_vf) { 769 int i; 770 771 for (i = 0; i < 5; i++) { 772 udelay(100); 773 links_reg = IXGBE_READ_REG(hw, IXGBE_VFLINKS); 774 775 if (!(links_reg & IXGBE_LINKS_UP)) 776 goto out; 777 } 778 } 779 780 switch (links_reg & IXGBE_LINKS_SPEED_82599) { 781 case IXGBE_LINKS_SPEED_10G_82599: 782 *speed = IXGBE_LINK_SPEED_10GB_FULL; 783 break; 784 case IXGBE_LINKS_SPEED_1G_82599: 785 *speed = IXGBE_LINK_SPEED_1GB_FULL; 786 break; 787 case IXGBE_LINKS_SPEED_100_82599: 788 *speed = IXGBE_LINK_SPEED_100_FULL; 789 break; 790 } 791 792 /* if we passed all the tests above then the link is up and we no 793 * longer need to check for link 794 */ 795 mac->get_link_status = false; 796 797 out: 798 *link_up = !mac->get_link_status; 799 return 0; 800 } 801 802 /** 803 * ixgbevf_set_rlpml_vf - Set the maximum receive packet length 804 * @hw: pointer to the HW structure 805 * @max_size: value to assign to max frame size 806 **/ 807 static s32 ixgbevf_set_rlpml_vf(struct ixgbe_hw *hw, u16 max_size) 808 { 809 u32 msgbuf[2]; 810 s32 ret_val; 811 812 msgbuf[0] = IXGBE_VF_SET_LPE; 813 msgbuf[1] = max_size; 814 815 ret_val = ixgbevf_write_msg_read_ack(hw, msgbuf, msgbuf, 816 sizeof(msgbuf) / sizeof(u32)); 817 if (ret_val) 818 return ret_val; 819 if ((msgbuf[0] & IXGBE_VF_SET_LPE) && 820 (msgbuf[0] & IXGBE_VT_MSGTYPE_NACK)) 821 return IXGBE_ERR_MBX; 822 823 return 0; 824 } 825 826 /** 827 * ixgbevf_hv_set_rlpml_vf - Set the maximum receive packet length 828 * @hw: pointer to the HW structure 829 * @max_size: value to assign to max frame size 830 * Hyper-V variant. 831 **/ 832 static s32 ixgbevf_hv_set_rlpml_vf(struct ixgbe_hw *hw, u16 max_size) 833 { 834 u32 reg; 835 836 /* If we are on Hyper-V, we implement this functionality 837 * differently. 838 */ 839 reg = IXGBE_READ_REG(hw, IXGBE_VFRXDCTL(0)); 840 /* CRC == 4 */ 841 reg |= ((max_size + 4) | IXGBE_RXDCTL_RLPML_EN); 842 IXGBE_WRITE_REG(hw, IXGBE_VFRXDCTL(0), reg); 843 844 return 0; 845 } 846 847 /** 848 * ixgbevf_negotiate_api_version_vf - Negotiate supported API version 849 * @hw: pointer to the HW structure 850 * @api: integer containing requested API version 851 **/ 852 static int ixgbevf_negotiate_api_version_vf(struct ixgbe_hw *hw, int api) 853 { 854 int err; 855 u32 msg[3]; 856 857 /* Negotiate the mailbox API version */ 858 msg[0] = IXGBE_VF_API_NEGOTIATE; 859 msg[1] = api; 860 msg[2] = 0; 861 862 err = ixgbevf_write_msg_read_ack(hw, msg, msg, 863 sizeof(msg) / sizeof(u32)); 864 if (!err) { 865 msg[0] &= ~IXGBE_VT_MSGTYPE_CTS; 866 867 /* Store value and return 0 on success */ 868 if (msg[0] == (IXGBE_VF_API_NEGOTIATE | IXGBE_VT_MSGTYPE_ACK)) { 869 hw->api_version = api; 870 return 0; 871 } 872 873 err = IXGBE_ERR_INVALID_ARGUMENT; 874 } 875 876 return err; 877 } 878 879 /** 880 * ixgbevf_hv_negotiate_api_version_vf - Negotiate supported API version 881 * @hw: pointer to the HW structure 882 * @api: integer containing requested API version 883 * Hyper-V version - only ixgbe_mbox_api_10 supported. 884 **/ 885 static int ixgbevf_hv_negotiate_api_version_vf(struct ixgbe_hw *hw, int api) 886 { 887 /* Hyper-V only supports api version ixgbe_mbox_api_10 */ 888 if (api != ixgbe_mbox_api_10) 889 return IXGBE_ERR_INVALID_ARGUMENT; 890 891 return 0; 892 } 893 894 int ixgbevf_get_queues(struct ixgbe_hw *hw, unsigned int *num_tcs, 895 unsigned int *default_tc) 896 { 897 int err; 898 u32 msg[5]; 899 900 /* do nothing if API doesn't support ixgbevf_get_queues */ 901 switch (hw->api_version) { 902 case ixgbe_mbox_api_11: 903 case ixgbe_mbox_api_12: 904 case ixgbe_mbox_api_13: 905 break; 906 default: 907 return 0; 908 } 909 910 /* Fetch queue configuration from the PF */ 911 msg[0] = IXGBE_VF_GET_QUEUE; 912 msg[1] = msg[2] = msg[3] = msg[4] = 0; 913 914 err = ixgbevf_write_msg_read_ack(hw, msg, msg, 915 sizeof(msg) / sizeof(u32)); 916 if (!err) { 917 msg[0] &= ~IXGBE_VT_MSGTYPE_CTS; 918 919 /* if we we didn't get an ACK there must have been 920 * some sort of mailbox error so we should treat it 921 * as such 922 */ 923 if (msg[0] != (IXGBE_VF_GET_QUEUE | IXGBE_VT_MSGTYPE_ACK)) 924 return IXGBE_ERR_MBX; 925 926 /* record and validate values from message */ 927 hw->mac.max_tx_queues = msg[IXGBE_VF_TX_QUEUES]; 928 if (hw->mac.max_tx_queues == 0 || 929 hw->mac.max_tx_queues > IXGBE_VF_MAX_TX_QUEUES) 930 hw->mac.max_tx_queues = IXGBE_VF_MAX_TX_QUEUES; 931 932 hw->mac.max_rx_queues = msg[IXGBE_VF_RX_QUEUES]; 933 if (hw->mac.max_rx_queues == 0 || 934 hw->mac.max_rx_queues > IXGBE_VF_MAX_RX_QUEUES) 935 hw->mac.max_rx_queues = IXGBE_VF_MAX_RX_QUEUES; 936 937 *num_tcs = msg[IXGBE_VF_TRANS_VLAN]; 938 /* in case of unknown state assume we cannot tag frames */ 939 if (*num_tcs > hw->mac.max_rx_queues) 940 *num_tcs = 1; 941 942 *default_tc = msg[IXGBE_VF_DEF_QUEUE]; 943 /* default to queue 0 on out-of-bounds queue number */ 944 if (*default_tc >= hw->mac.max_tx_queues) 945 *default_tc = 0; 946 } 947 948 return err; 949 } 950 951 static const struct ixgbe_mac_operations ixgbevf_mac_ops = { 952 .init_hw = ixgbevf_init_hw_vf, 953 .reset_hw = ixgbevf_reset_hw_vf, 954 .start_hw = ixgbevf_start_hw_vf, 955 .get_mac_addr = ixgbevf_get_mac_addr_vf, 956 .stop_adapter = ixgbevf_stop_hw_vf, 957 .setup_link = ixgbevf_setup_mac_link_vf, 958 .check_link = ixgbevf_check_mac_link_vf, 959 .negotiate_api_version = ixgbevf_negotiate_api_version_vf, 960 .set_rar = ixgbevf_set_rar_vf, 961 .update_mc_addr_list = ixgbevf_update_mc_addr_list_vf, 962 .update_xcast_mode = ixgbevf_update_xcast_mode, 963 .set_uc_addr = ixgbevf_set_uc_addr_vf, 964 .set_vfta = ixgbevf_set_vfta_vf, 965 .set_rlpml = ixgbevf_set_rlpml_vf, 966 }; 967 968 static const struct ixgbe_mac_operations ixgbevf_hv_mac_ops = { 969 .init_hw = ixgbevf_init_hw_vf, 970 .reset_hw = ixgbevf_hv_reset_hw_vf, 971 .start_hw = ixgbevf_start_hw_vf, 972 .get_mac_addr = ixgbevf_get_mac_addr_vf, 973 .stop_adapter = ixgbevf_stop_hw_vf, 974 .setup_link = ixgbevf_setup_mac_link_vf, 975 .check_link = ixgbevf_hv_check_mac_link_vf, 976 .negotiate_api_version = ixgbevf_hv_negotiate_api_version_vf, 977 .set_rar = ixgbevf_hv_set_rar_vf, 978 .update_mc_addr_list = ixgbevf_hv_update_mc_addr_list_vf, 979 .update_xcast_mode = ixgbevf_hv_update_xcast_mode, 980 .set_uc_addr = ixgbevf_hv_set_uc_addr_vf, 981 .set_vfta = ixgbevf_hv_set_vfta_vf, 982 .set_rlpml = ixgbevf_hv_set_rlpml_vf, 983 }; 984 985 const struct ixgbevf_info ixgbevf_82599_vf_info = { 986 .mac = ixgbe_mac_82599_vf, 987 .mac_ops = &ixgbevf_mac_ops, 988 }; 989 990 const struct ixgbevf_info ixgbevf_82599_vf_hv_info = { 991 .mac = ixgbe_mac_82599_vf, 992 .mac_ops = &ixgbevf_hv_mac_ops, 993 }; 994 995 const struct ixgbevf_info ixgbevf_X540_vf_info = { 996 .mac = ixgbe_mac_X540_vf, 997 .mac_ops = &ixgbevf_mac_ops, 998 }; 999 1000 const struct ixgbevf_info ixgbevf_X540_vf_hv_info = { 1001 .mac = ixgbe_mac_X540_vf, 1002 .mac_ops = &ixgbevf_hv_mac_ops, 1003 }; 1004 1005 const struct ixgbevf_info ixgbevf_X550_vf_info = { 1006 .mac = ixgbe_mac_X550_vf, 1007 .mac_ops = &ixgbevf_mac_ops, 1008 }; 1009 1010 const struct ixgbevf_info ixgbevf_X550_vf_hv_info = { 1011 .mac = ixgbe_mac_X550_vf, 1012 .mac_ops = &ixgbevf_hv_mac_ops, 1013 }; 1014 1015 const struct ixgbevf_info ixgbevf_X550EM_x_vf_info = { 1016 .mac = ixgbe_mac_X550EM_x_vf, 1017 .mac_ops = &ixgbevf_mac_ops, 1018 }; 1019 1020 const struct ixgbevf_info ixgbevf_X550EM_x_vf_hv_info = { 1021 .mac = ixgbe_mac_X550EM_x_vf, 1022 .mac_ops = &ixgbevf_hv_mac_ops, 1023 }; 1024 1025 const struct ixgbevf_info ixgbevf_x550em_a_vf_info = { 1026 .mac = ixgbe_mac_x550em_a_vf, 1027 .mac_ops = &ixgbevf_mac_ops, 1028 }; 1029