1 // SPDX-License-Identifier: GPL-2.0 2 /* Copyright(c) 1999 - 2018 Intel Corporation. */ 3 4 #include "vf.h" 5 #include "ixgbevf.h" 6 7 /* On Hyper-V, to reset, we need to read from this offset 8 * from the PCI config space. This is the mechanism used on 9 * Hyper-V to support PF/VF communication. 10 */ 11 #define IXGBE_HV_RESET_OFFSET 0x201 12 13 static inline s32 ixgbevf_write_msg_read_ack(struct ixgbe_hw *hw, u32 *msg, 14 u32 *retmsg, u16 size) 15 { 16 s32 retval = ixgbevf_write_mbx(hw, msg, size); 17 18 if (retval) 19 return retval; 20 21 return ixgbevf_poll_mbx(hw, retmsg, size); 22 } 23 24 /** 25 * ixgbevf_start_hw_vf - Prepare hardware for Tx/Rx 26 * @hw: pointer to hardware structure 27 * 28 * Starts the hardware by filling the bus info structure and media type, clears 29 * all on chip counters, initializes receive address registers, multicast 30 * table, VLAN filter table, calls routine to set up link and flow control 31 * settings, and leaves transmit and receive units disabled and uninitialized 32 **/ 33 static s32 ixgbevf_start_hw_vf(struct ixgbe_hw *hw) 34 { 35 /* Clear adapter stopped flag */ 36 hw->adapter_stopped = false; 37 38 return 0; 39 } 40 41 /** 42 * ixgbevf_init_hw_vf - virtual function hardware initialization 43 * @hw: pointer to hardware structure 44 * 45 * Initialize the hardware by resetting the hardware and then starting 46 * the hardware 47 **/ 48 static s32 ixgbevf_init_hw_vf(struct ixgbe_hw *hw) 49 { 50 s32 status = hw->mac.ops.start_hw(hw); 51 52 hw->mac.ops.get_mac_addr(hw, hw->mac.addr); 53 54 return status; 55 } 56 57 /** 58 * ixgbevf_reset_hw_vf - Performs hardware reset 59 * @hw: pointer to hardware structure 60 * 61 * Resets the hardware by resetting the transmit and receive units, masks and 62 * clears all interrupts. 63 **/ 64 static s32 ixgbevf_reset_hw_vf(struct ixgbe_hw *hw) 65 { 66 struct ixgbe_mbx_info *mbx = &hw->mbx; 67 u32 timeout = IXGBE_VF_INIT_TIMEOUT; 68 u32 msgbuf[IXGBE_VF_PERMADDR_MSG_LEN]; 69 u8 *addr = (u8 *)(&msgbuf[1]); 70 s32 ret_val; 71 72 /* Call adapter stop to disable tx/rx and clear interrupts */ 73 hw->mac.ops.stop_adapter(hw); 74 75 /* reset the api version */ 76 hw->api_version = ixgbe_mbox_api_10; 77 hw->mbx.ops.init_params(hw); 78 memcpy(&hw->mbx.ops, &ixgbevf_mbx_ops_legacy, 79 sizeof(struct ixgbe_mbx_operations)); 80 81 IXGBE_WRITE_REG(hw, IXGBE_VFCTRL, IXGBE_CTRL_RST); 82 IXGBE_WRITE_FLUSH(hw); 83 84 /* we cannot reset while the RSTI / RSTD bits are asserted */ 85 while (!mbx->ops.check_for_rst(hw) && timeout) { 86 timeout--; 87 udelay(5); 88 } 89 90 if (!timeout) 91 return IXGBE_ERR_RESET_FAILED; 92 93 /* mailbox timeout can now become active */ 94 mbx->timeout = IXGBE_VF_MBX_INIT_TIMEOUT; 95 96 msgbuf[0] = IXGBE_VF_RESET; 97 ixgbevf_write_mbx(hw, msgbuf, 1); 98 99 mdelay(10); 100 101 /* set our "perm_addr" based on info provided by PF 102 * also set up the mc_filter_type which is piggy backed 103 * on the mac address in word 3 104 */ 105 ret_val = ixgbevf_poll_mbx(hw, msgbuf, IXGBE_VF_PERMADDR_MSG_LEN); 106 if (ret_val) 107 return ret_val; 108 109 /* New versions of the PF may NACK the reset return message 110 * to indicate that no MAC address has yet been assigned for 111 * the VF. 112 */ 113 if (msgbuf[0] != (IXGBE_VF_RESET | IXGBE_VT_MSGTYPE_SUCCESS) && 114 msgbuf[0] != (IXGBE_VF_RESET | IXGBE_VT_MSGTYPE_FAILURE)) 115 return IXGBE_ERR_INVALID_MAC_ADDR; 116 117 if (msgbuf[0] == (IXGBE_VF_RESET | IXGBE_VT_MSGTYPE_SUCCESS)) 118 ether_addr_copy(hw->mac.perm_addr, addr); 119 120 hw->mac.mc_filter_type = msgbuf[IXGBE_VF_MC_TYPE_WORD]; 121 122 return 0; 123 } 124 125 /** 126 * ixgbevf_hv_reset_hw_vf - reset via Hyper-V 127 * @hw: pointer to private hardware struct 128 * 129 * Hyper-V variant; the VF/PF communication is through the PCI 130 * config space. 131 */ 132 static s32 ixgbevf_hv_reset_hw_vf(struct ixgbe_hw *hw) 133 { 134 #if IS_ENABLED(CONFIG_PCI_MMCONFIG) 135 struct ixgbevf_adapter *adapter = hw->back; 136 int i; 137 138 for (i = 0; i < 6; i++) 139 pci_read_config_byte(adapter->pdev, 140 (i + IXGBE_HV_RESET_OFFSET), 141 &hw->mac.perm_addr[i]); 142 return 0; 143 #else 144 pr_err("PCI_MMCONFIG needs to be enabled for Hyper-V\n"); 145 return -EOPNOTSUPP; 146 #endif 147 } 148 149 /** 150 * ixgbevf_stop_hw_vf - Generic stop Tx/Rx units 151 * @hw: pointer to hardware structure 152 * 153 * Sets the adapter_stopped flag within ixgbe_hw struct. Clears interrupts, 154 * disables transmit and receive units. The adapter_stopped flag is used by 155 * the shared code and drivers to determine if the adapter is in a stopped 156 * state and should not touch the hardware. 157 **/ 158 static s32 ixgbevf_stop_hw_vf(struct ixgbe_hw *hw) 159 { 160 u32 number_of_queues; 161 u32 reg_val; 162 u16 i; 163 164 /* Set the adapter_stopped flag so other driver functions stop touching 165 * the hardware 166 */ 167 hw->adapter_stopped = true; 168 169 /* Disable the receive unit by stopped each queue */ 170 number_of_queues = hw->mac.max_rx_queues; 171 for (i = 0; i < number_of_queues; i++) { 172 reg_val = IXGBE_READ_REG(hw, IXGBE_VFRXDCTL(i)); 173 if (reg_val & IXGBE_RXDCTL_ENABLE) { 174 reg_val &= ~IXGBE_RXDCTL_ENABLE; 175 IXGBE_WRITE_REG(hw, IXGBE_VFRXDCTL(i), reg_val); 176 } 177 } 178 179 IXGBE_WRITE_FLUSH(hw); 180 181 /* Clear interrupt mask to stop from interrupts being generated */ 182 IXGBE_WRITE_REG(hw, IXGBE_VTEIMC, IXGBE_VF_IRQ_CLEAR_MASK); 183 184 /* Clear any pending interrupts */ 185 IXGBE_READ_REG(hw, IXGBE_VTEICR); 186 187 /* Disable the transmit unit. Each queue must be disabled. */ 188 number_of_queues = hw->mac.max_tx_queues; 189 for (i = 0; i < number_of_queues; i++) { 190 reg_val = IXGBE_READ_REG(hw, IXGBE_VFTXDCTL(i)); 191 if (reg_val & IXGBE_TXDCTL_ENABLE) { 192 reg_val &= ~IXGBE_TXDCTL_ENABLE; 193 IXGBE_WRITE_REG(hw, IXGBE_VFTXDCTL(i), reg_val); 194 } 195 } 196 197 return 0; 198 } 199 200 /** 201 * ixgbevf_mta_vector - Determines bit-vector in multicast table to set 202 * @hw: pointer to hardware structure 203 * @mc_addr: the multicast address 204 * 205 * Extracts the 12 bits, from a multicast address, to determine which 206 * bit-vector to set in the multicast table. The hardware uses 12 bits, from 207 * incoming Rx multicast addresses, to determine the bit-vector to check in 208 * the MTA. Which of the 4 combination, of 12-bits, the hardware uses is set 209 * by the MO field of the MCSTCTRL. The MO field is set during initialization 210 * to mc_filter_type. 211 **/ 212 static s32 ixgbevf_mta_vector(struct ixgbe_hw *hw, u8 *mc_addr) 213 { 214 u32 vector = 0; 215 216 switch (hw->mac.mc_filter_type) { 217 case 0: /* use bits [47:36] of the address */ 218 vector = ((mc_addr[4] >> 4) | (((u16)mc_addr[5]) << 4)); 219 break; 220 case 1: /* use bits [46:35] of the address */ 221 vector = ((mc_addr[4] >> 3) | (((u16)mc_addr[5]) << 5)); 222 break; 223 case 2: /* use bits [45:34] of the address */ 224 vector = ((mc_addr[4] >> 2) | (((u16)mc_addr[5]) << 6)); 225 break; 226 case 3: /* use bits [43:32] of the address */ 227 vector = ((mc_addr[4]) | (((u16)mc_addr[5]) << 8)); 228 break; 229 default: /* Invalid mc_filter_type */ 230 break; 231 } 232 233 /* vector can only be 12-bits or boundary will be exceeded */ 234 vector &= 0xFFF; 235 return vector; 236 } 237 238 /** 239 * ixgbevf_get_mac_addr_vf - Read device MAC address 240 * @hw: pointer to the HW structure 241 * @mac_addr: pointer to storage for retrieved MAC address 242 **/ 243 static s32 ixgbevf_get_mac_addr_vf(struct ixgbe_hw *hw, u8 *mac_addr) 244 { 245 ether_addr_copy(mac_addr, hw->mac.perm_addr); 246 247 return 0; 248 } 249 250 static s32 ixgbevf_set_uc_addr_vf(struct ixgbe_hw *hw, u32 index, u8 *addr) 251 { 252 u32 msgbuf[3], msgbuf_chk; 253 u8 *msg_addr = (u8 *)(&msgbuf[1]); 254 s32 ret_val; 255 256 memset(msgbuf, 0, sizeof(msgbuf)); 257 /* If index is one then this is the start of a new list and needs 258 * indication to the PF so it can do it's own list management. 259 * If it is zero then that tells the PF to just clear all of 260 * this VF's macvlans and there is no new list. 261 */ 262 msgbuf[0] |= index << IXGBE_VT_MSGINFO_SHIFT; 263 msgbuf[0] |= IXGBE_VF_SET_MACVLAN; 264 msgbuf_chk = msgbuf[0]; 265 266 if (addr) 267 ether_addr_copy(msg_addr, addr); 268 269 ret_val = ixgbevf_write_msg_read_ack(hw, msgbuf, msgbuf, 270 ARRAY_SIZE(msgbuf)); 271 if (!ret_val) { 272 msgbuf[0] &= ~IXGBE_VT_MSGTYPE_CTS; 273 274 if (msgbuf[0] == (msgbuf_chk | IXGBE_VT_MSGTYPE_FAILURE)) 275 return -ENOMEM; 276 } 277 278 return ret_val; 279 } 280 281 static s32 ixgbevf_hv_set_uc_addr_vf(struct ixgbe_hw *hw, u32 index, u8 *addr) 282 { 283 return -EOPNOTSUPP; 284 } 285 286 /** 287 * ixgbevf_get_reta_locked - get the RSS redirection table (RETA) contents. 288 * @hw: pointer to hardware structure 289 * @reta: buffer to fill with RETA contents. 290 * @num_rx_queues: Number of Rx queues configured for this port 291 * 292 * The "reta" buffer should be big enough to contain 32 registers. 293 * 294 * Returns: 0 on success. 295 * if API doesn't support this operation - (-EOPNOTSUPP). 296 */ 297 int ixgbevf_get_reta_locked(struct ixgbe_hw *hw, u32 *reta, int num_rx_queues) 298 { 299 int err, i, j; 300 u32 msgbuf[IXGBE_VFMAILBOX_SIZE]; 301 u32 *hw_reta = &msgbuf[1]; 302 u32 mask = 0; 303 304 /* We have to use a mailbox for 82599 and x540 devices only. 305 * For these devices RETA has 128 entries. 306 * Also these VFs support up to 4 RSS queues. Therefore PF will compress 307 * 16 RETA entries in each DWORD giving 2 bits to each entry. 308 */ 309 int dwords = IXGBEVF_82599_RETA_SIZE / 16; 310 311 /* We support the RSS querying for 82599 and x540 devices only. 312 * Thus return an error if API doesn't support RETA querying or querying 313 * is not supported for this device type. 314 */ 315 switch (hw->api_version) { 316 case ixgbe_mbox_api_15: 317 case ixgbe_mbox_api_14: 318 case ixgbe_mbox_api_13: 319 case ixgbe_mbox_api_12: 320 if (hw->mac.type < ixgbe_mac_X550_vf) 321 break; 322 fallthrough; 323 default: 324 return -EOPNOTSUPP; 325 } 326 327 msgbuf[0] = IXGBE_VF_GET_RETA; 328 329 err = ixgbevf_write_mbx(hw, msgbuf, 1); 330 331 if (err) 332 return err; 333 334 err = ixgbevf_poll_mbx(hw, msgbuf, dwords + 1); 335 336 if (err) 337 return err; 338 339 msgbuf[0] &= ~IXGBE_VT_MSGTYPE_CTS; 340 341 /* If the operation has been refused by a PF return -EPERM */ 342 if (msgbuf[0] == (IXGBE_VF_GET_RETA | IXGBE_VT_MSGTYPE_FAILURE)) 343 return -EPERM; 344 345 /* If we didn't get an ACK there must have been 346 * some sort of mailbox error so we should treat it 347 * as such. 348 */ 349 if (msgbuf[0] != (IXGBE_VF_GET_RETA | IXGBE_VT_MSGTYPE_SUCCESS)) 350 return IXGBE_ERR_MBX; 351 352 /* ixgbevf doesn't support more than 2 queues at the moment */ 353 if (num_rx_queues > 1) 354 mask = 0x1; 355 356 for (i = 0; i < dwords; i++) 357 for (j = 0; j < 16; j++) 358 reta[i * 16 + j] = (hw_reta[i] >> (2 * j)) & mask; 359 360 return 0; 361 } 362 363 /** 364 * ixgbevf_get_rss_key_locked - get the RSS Random Key 365 * @hw: pointer to the HW structure 366 * @rss_key: buffer to fill with RSS Hash Key contents. 367 * 368 * The "rss_key" buffer should be big enough to contain 10 registers. 369 * 370 * Returns: 0 on success. 371 * if API doesn't support this operation - (-EOPNOTSUPP). 372 */ 373 int ixgbevf_get_rss_key_locked(struct ixgbe_hw *hw, u8 *rss_key) 374 { 375 int err; 376 u32 msgbuf[IXGBE_VFMAILBOX_SIZE]; 377 378 /* We currently support the RSS Random Key retrieval for 82599 and x540 379 * devices only. 380 * 381 * Thus return an error if API doesn't support RSS Random Key retrieval 382 * or if the operation is not supported for this device type. 383 */ 384 switch (hw->api_version) { 385 case ixgbe_mbox_api_15: 386 case ixgbe_mbox_api_14: 387 case ixgbe_mbox_api_13: 388 case ixgbe_mbox_api_12: 389 if (hw->mac.type < ixgbe_mac_X550_vf) 390 break; 391 fallthrough; 392 default: 393 return -EOPNOTSUPP; 394 } 395 396 msgbuf[0] = IXGBE_VF_GET_RSS_KEY; 397 err = ixgbevf_write_mbx(hw, msgbuf, 1); 398 399 if (err) 400 return err; 401 402 err = ixgbevf_poll_mbx(hw, msgbuf, 11); 403 404 if (err) 405 return err; 406 407 msgbuf[0] &= ~IXGBE_VT_MSGTYPE_CTS; 408 409 /* If the operation has been refused by a PF return -EPERM */ 410 if (msgbuf[0] == (IXGBE_VF_GET_RSS_KEY | IXGBE_VT_MSGTYPE_FAILURE)) 411 return -EPERM; 412 413 /* If we didn't get an ACK there must have been 414 * some sort of mailbox error so we should treat it 415 * as such. 416 */ 417 if (msgbuf[0] != (IXGBE_VF_GET_RSS_KEY | IXGBE_VT_MSGTYPE_SUCCESS)) 418 return IXGBE_ERR_MBX; 419 420 memcpy(rss_key, msgbuf + 1, IXGBEVF_RSS_HASH_KEY_SIZE); 421 422 return 0; 423 } 424 425 /** 426 * ixgbevf_set_rar_vf - set device MAC address 427 * @hw: pointer to hardware structure 428 * @index: Receive address register to write 429 * @addr: Address to put into receive address register 430 * @vmdq: Unused in this implementation 431 **/ 432 static s32 ixgbevf_set_rar_vf(struct ixgbe_hw *hw, u32 index, u8 *addr, 433 u32 vmdq) 434 { 435 u32 msgbuf[3]; 436 u8 *msg_addr = (u8 *)(&msgbuf[1]); 437 s32 ret_val; 438 439 memset(msgbuf, 0, sizeof(msgbuf)); 440 msgbuf[0] = IXGBE_VF_SET_MAC_ADDR; 441 ether_addr_copy(msg_addr, addr); 442 443 ret_val = ixgbevf_write_msg_read_ack(hw, msgbuf, msgbuf, 444 ARRAY_SIZE(msgbuf)); 445 msgbuf[0] &= ~IXGBE_VT_MSGTYPE_CTS; 446 447 /* if nacked the address was rejected, use "perm_addr" */ 448 if (!ret_val && 449 (msgbuf[0] == (IXGBE_VF_SET_MAC_ADDR | IXGBE_VT_MSGTYPE_FAILURE))) { 450 ixgbevf_get_mac_addr_vf(hw, hw->mac.addr); 451 return IXGBE_ERR_MBX; 452 } 453 454 return ret_val; 455 } 456 457 /** 458 * ixgbevf_hv_set_rar_vf - set device MAC address Hyper-V variant 459 * @hw: pointer to hardware structure 460 * @index: Receive address register to write 461 * @addr: Address to put into receive address register 462 * @vmdq: Unused in this implementation 463 * 464 * We don't really allow setting the device MAC address. However, 465 * if the address being set is the permanent MAC address we will 466 * permit that. 467 **/ 468 static s32 ixgbevf_hv_set_rar_vf(struct ixgbe_hw *hw, u32 index, u8 *addr, 469 u32 vmdq) 470 { 471 if (ether_addr_equal(addr, hw->mac.perm_addr)) 472 return 0; 473 474 return -EOPNOTSUPP; 475 } 476 477 /** 478 * ixgbevf_update_mc_addr_list_vf - Update Multicast addresses 479 * @hw: pointer to the HW structure 480 * @netdev: pointer to net device structure 481 * 482 * Updates the Multicast Table Array. 483 **/ 484 static s32 ixgbevf_update_mc_addr_list_vf(struct ixgbe_hw *hw, 485 struct net_device *netdev) 486 { 487 struct netdev_hw_addr *ha; 488 u32 msgbuf[IXGBE_VFMAILBOX_SIZE]; 489 u16 *vector_list = (u16 *)&msgbuf[1]; 490 u32 cnt, i; 491 492 /* Each entry in the list uses 1 16 bit word. We have 30 493 * 16 bit words available in our HW msg buffer (minus 1 for the 494 * msg type). That's 30 hash values if we pack 'em right. If 495 * there are more than 30 MC addresses to add then punt the 496 * extras for now and then add code to handle more than 30 later. 497 * It would be unusual for a server to request that many multi-cast 498 * addresses except for in large enterprise network environments. 499 */ 500 501 cnt = netdev_mc_count(netdev); 502 if (cnt > 30) 503 cnt = 30; 504 msgbuf[0] = IXGBE_VF_SET_MULTICAST; 505 msgbuf[0] |= cnt << IXGBE_VT_MSGINFO_SHIFT; 506 507 i = 0; 508 netdev_for_each_mc_addr(ha, netdev) { 509 if (i == cnt) 510 break; 511 if (is_link_local_ether_addr(ha->addr)) 512 continue; 513 514 vector_list[i++] = ixgbevf_mta_vector(hw, ha->addr); 515 } 516 517 return ixgbevf_write_msg_read_ack(hw, msgbuf, msgbuf, 518 IXGBE_VFMAILBOX_SIZE); 519 } 520 521 /** 522 * ixgbevf_hv_update_mc_addr_list_vf - stub 523 * @hw: unused 524 * @netdev: unused 525 * 526 * Hyper-V variant - just a stub. 527 */ 528 static s32 ixgbevf_hv_update_mc_addr_list_vf(struct ixgbe_hw *hw, 529 struct net_device *netdev) 530 { 531 return -EOPNOTSUPP; 532 } 533 534 /** 535 * ixgbevf_update_xcast_mode - Update Multicast mode 536 * @hw: pointer to the HW structure 537 * @xcast_mode: new multicast mode 538 * 539 * Updates the Multicast Mode of VF. 540 **/ 541 static s32 ixgbevf_update_xcast_mode(struct ixgbe_hw *hw, int xcast_mode) 542 { 543 u32 msgbuf[2]; 544 s32 err; 545 546 switch (hw->api_version) { 547 case ixgbe_mbox_api_12: 548 /* promisc introduced in 1.3 version */ 549 if (xcast_mode == IXGBEVF_XCAST_MODE_PROMISC) 550 return -EOPNOTSUPP; 551 fallthrough; 552 case ixgbe_mbox_api_13: 553 case ixgbe_mbox_api_14: 554 case ixgbe_mbox_api_15: 555 break; 556 default: 557 return -EOPNOTSUPP; 558 } 559 560 msgbuf[0] = IXGBE_VF_UPDATE_XCAST_MODE; 561 msgbuf[1] = xcast_mode; 562 563 err = ixgbevf_write_msg_read_ack(hw, msgbuf, msgbuf, 564 ARRAY_SIZE(msgbuf)); 565 if (err) 566 return err; 567 568 msgbuf[0] &= ~IXGBE_VT_MSGTYPE_CTS; 569 if (msgbuf[0] == (IXGBE_VF_UPDATE_XCAST_MODE | IXGBE_VT_MSGTYPE_FAILURE)) 570 return -EPERM; 571 572 return 0; 573 } 574 575 /** 576 * ixgbevf_hv_update_xcast_mode - stub 577 * @hw: unused 578 * @xcast_mode: unused 579 * 580 * Hyper-V variant - just a stub. 581 */ 582 static s32 ixgbevf_hv_update_xcast_mode(struct ixgbe_hw *hw, int xcast_mode) 583 { 584 return -EOPNOTSUPP; 585 } 586 587 /** 588 * ixgbevf_set_vfta_vf - Set/Unset VLAN filter table address 589 * @hw: pointer to the HW structure 590 * @vlan: 12 bit VLAN ID 591 * @vind: unused by VF drivers 592 * @vlan_on: if true then set bit, else clear bit 593 **/ 594 static s32 ixgbevf_set_vfta_vf(struct ixgbe_hw *hw, u32 vlan, u32 vind, 595 bool vlan_on) 596 { 597 u32 msgbuf[2]; 598 s32 err; 599 600 msgbuf[0] = IXGBE_VF_SET_VLAN; 601 msgbuf[1] = vlan; 602 /* Setting the 8 bit field MSG INFO to TRUE indicates "add" */ 603 msgbuf[0] |= vlan_on << IXGBE_VT_MSGINFO_SHIFT; 604 605 err = ixgbevf_write_msg_read_ack(hw, msgbuf, msgbuf, 606 ARRAY_SIZE(msgbuf)); 607 if (err) 608 goto mbx_err; 609 610 /* remove extra bits from the message */ 611 msgbuf[0] &= ~IXGBE_VT_MSGTYPE_CTS; 612 msgbuf[0] &= ~(0xFF << IXGBE_VT_MSGINFO_SHIFT); 613 614 if (msgbuf[0] != (IXGBE_VF_SET_VLAN | IXGBE_VT_MSGTYPE_SUCCESS)) 615 err = IXGBE_ERR_INVALID_ARGUMENT; 616 617 mbx_err: 618 return err; 619 } 620 621 /** 622 * ixgbevf_hv_set_vfta_vf - * Hyper-V variant - just a stub. 623 * @hw: unused 624 * @vlan: unused 625 * @vind: unused 626 * @vlan_on: unused 627 */ 628 static s32 ixgbevf_hv_set_vfta_vf(struct ixgbe_hw *hw, u32 vlan, u32 vind, 629 bool vlan_on) 630 { 631 return -EOPNOTSUPP; 632 } 633 634 /** 635 * ixgbevf_setup_mac_link_vf - Setup MAC link settings 636 * @hw: pointer to hardware structure 637 * @speed: Unused in this implementation 638 * @autoneg: Unused in this implementation 639 * @autoneg_wait_to_complete: Unused in this implementation 640 * 641 * Do nothing and return success. VF drivers are not allowed to change 642 * global settings. Maintained for driver compatibility. 643 **/ 644 static s32 ixgbevf_setup_mac_link_vf(struct ixgbe_hw *hw, 645 ixgbe_link_speed speed, bool autoneg, 646 bool autoneg_wait_to_complete) 647 { 648 return 0; 649 } 650 651 /** 652 * ixgbevf_check_mac_link_vf - Get link/speed status 653 * @hw: pointer to hardware structure 654 * @speed: pointer to link speed 655 * @link_up: true is link is up, false otherwise 656 * @autoneg_wait_to_complete: unused 657 * 658 * Reads the links register to determine if link is up and the current speed 659 **/ 660 static s32 ixgbevf_check_mac_link_vf(struct ixgbe_hw *hw, 661 ixgbe_link_speed *speed, 662 bool *link_up, 663 bool autoneg_wait_to_complete) 664 { 665 struct ixgbe_mbx_info *mbx = &hw->mbx; 666 struct ixgbe_mac_info *mac = &hw->mac; 667 s32 ret_val = 0; 668 u32 links_reg; 669 u32 in_msg = 0; 670 671 /* If we were hit with a reset drop the link */ 672 if (!mbx->ops.check_for_rst(hw) || !mbx->timeout) 673 mac->get_link_status = true; 674 675 if (!mac->get_link_status) 676 goto out; 677 678 /* if link status is down no point in checking to see if pf is up */ 679 links_reg = IXGBE_READ_REG(hw, IXGBE_VFLINKS); 680 if (!(links_reg & IXGBE_LINKS_UP)) 681 goto out; 682 683 /* for SFP+ modules and DA cables on 82599 it can take up to 500usecs 684 * before the link status is correct 685 */ 686 if (mac->type == ixgbe_mac_82599_vf) { 687 int i; 688 689 for (i = 0; i < 5; i++) { 690 udelay(100); 691 links_reg = IXGBE_READ_REG(hw, IXGBE_VFLINKS); 692 693 if (!(links_reg & IXGBE_LINKS_UP)) 694 goto out; 695 } 696 } 697 698 switch (links_reg & IXGBE_LINKS_SPEED_82599) { 699 case IXGBE_LINKS_SPEED_10G_82599: 700 *speed = IXGBE_LINK_SPEED_10GB_FULL; 701 break; 702 case IXGBE_LINKS_SPEED_1G_82599: 703 *speed = IXGBE_LINK_SPEED_1GB_FULL; 704 break; 705 case IXGBE_LINKS_SPEED_100_82599: 706 *speed = IXGBE_LINK_SPEED_100_FULL; 707 break; 708 } 709 710 /* if the read failed it could just be a mailbox collision, best wait 711 * until we are called again and don't report an error 712 */ 713 if (mbx->ops.read(hw, &in_msg, 1)) { 714 if (hw->api_version >= ixgbe_mbox_api_15) 715 mac->get_link_status = false; 716 goto out; 717 } 718 719 if (!(in_msg & IXGBE_VT_MSGTYPE_CTS)) { 720 /* msg is not CTS and is NACK we must have lost CTS status */ 721 if (in_msg & IXGBE_VT_MSGTYPE_FAILURE) 722 ret_val = -1; 723 goto out; 724 } 725 726 /* the pf is talking, if we timed out in the past we reinit */ 727 if (!mbx->timeout) { 728 ret_val = -1; 729 goto out; 730 } 731 732 /* if we passed all the tests above then the link is up and we no 733 * longer need to check for link 734 */ 735 mac->get_link_status = false; 736 737 out: 738 *link_up = !mac->get_link_status; 739 return ret_val; 740 } 741 742 /** 743 * ixgbevf_hv_check_mac_link_vf - check link 744 * @hw: pointer to private hardware struct 745 * @speed: pointer to link speed 746 * @link_up: true is link is up, false otherwise 747 * @autoneg_wait_to_complete: unused 748 * 749 * Hyper-V variant; there is no mailbox communication. 750 */ 751 static s32 ixgbevf_hv_check_mac_link_vf(struct ixgbe_hw *hw, 752 ixgbe_link_speed *speed, 753 bool *link_up, 754 bool autoneg_wait_to_complete) 755 { 756 struct ixgbe_mbx_info *mbx = &hw->mbx; 757 struct ixgbe_mac_info *mac = &hw->mac; 758 u32 links_reg; 759 760 /* If we were hit with a reset drop the link */ 761 if (!mbx->ops.check_for_rst(hw) || !mbx->timeout) 762 mac->get_link_status = true; 763 764 if (!mac->get_link_status) 765 goto out; 766 767 /* if link status is down no point in checking to see if pf is up */ 768 links_reg = IXGBE_READ_REG(hw, IXGBE_VFLINKS); 769 if (!(links_reg & IXGBE_LINKS_UP)) 770 goto out; 771 772 /* for SFP+ modules and DA cables on 82599 it can take up to 500usecs 773 * before the link status is correct 774 */ 775 if (mac->type == ixgbe_mac_82599_vf) { 776 int i; 777 778 for (i = 0; i < 5; i++) { 779 udelay(100); 780 links_reg = IXGBE_READ_REG(hw, IXGBE_VFLINKS); 781 782 if (!(links_reg & IXGBE_LINKS_UP)) 783 goto out; 784 } 785 } 786 787 switch (links_reg & IXGBE_LINKS_SPEED_82599) { 788 case IXGBE_LINKS_SPEED_10G_82599: 789 *speed = IXGBE_LINK_SPEED_10GB_FULL; 790 break; 791 case IXGBE_LINKS_SPEED_1G_82599: 792 *speed = IXGBE_LINK_SPEED_1GB_FULL; 793 break; 794 case IXGBE_LINKS_SPEED_100_82599: 795 *speed = IXGBE_LINK_SPEED_100_FULL; 796 break; 797 } 798 799 /* if we passed all the tests above then the link is up and we no 800 * longer need to check for link 801 */ 802 mac->get_link_status = false; 803 804 out: 805 *link_up = !mac->get_link_status; 806 return 0; 807 } 808 809 /** 810 * ixgbevf_set_rlpml_vf - Set the maximum receive packet length 811 * @hw: pointer to the HW structure 812 * @max_size: value to assign to max frame size 813 **/ 814 static s32 ixgbevf_set_rlpml_vf(struct ixgbe_hw *hw, u16 max_size) 815 { 816 u32 msgbuf[2]; 817 s32 ret_val; 818 819 msgbuf[0] = IXGBE_VF_SET_LPE; 820 msgbuf[1] = max_size; 821 822 ret_val = ixgbevf_write_msg_read_ack(hw, msgbuf, msgbuf, 823 ARRAY_SIZE(msgbuf)); 824 if (ret_val) 825 return ret_val; 826 if ((msgbuf[0] & IXGBE_VF_SET_LPE) && 827 (msgbuf[0] & IXGBE_VT_MSGTYPE_FAILURE)) 828 return IXGBE_ERR_MBX; 829 830 return 0; 831 } 832 833 /** 834 * ixgbevf_hv_set_rlpml_vf - Set the maximum receive packet length 835 * @hw: pointer to the HW structure 836 * @max_size: value to assign to max frame size 837 * Hyper-V variant. 838 **/ 839 static s32 ixgbevf_hv_set_rlpml_vf(struct ixgbe_hw *hw, u16 max_size) 840 { 841 u32 reg; 842 843 /* If we are on Hyper-V, we implement this functionality 844 * differently. 845 */ 846 reg = IXGBE_READ_REG(hw, IXGBE_VFRXDCTL(0)); 847 /* CRC == 4 */ 848 reg |= ((max_size + 4) | IXGBE_RXDCTL_RLPML_EN); 849 IXGBE_WRITE_REG(hw, IXGBE_VFRXDCTL(0), reg); 850 851 return 0; 852 } 853 854 /** 855 * ixgbevf_negotiate_api_version_vf - Negotiate supported API version 856 * @hw: pointer to the HW structure 857 * @api: integer containing requested API version 858 **/ 859 static int ixgbevf_negotiate_api_version_vf(struct ixgbe_hw *hw, int api) 860 { 861 int err; 862 u32 msg[3]; 863 864 /* Negotiate the mailbox API version */ 865 msg[0] = IXGBE_VF_API_NEGOTIATE; 866 msg[1] = api; 867 msg[2] = 0; 868 869 err = ixgbevf_write_msg_read_ack(hw, msg, msg, ARRAY_SIZE(msg)); 870 if (!err) { 871 msg[0] &= ~IXGBE_VT_MSGTYPE_CTS; 872 873 /* Store value and return 0 on success */ 874 if (msg[0] == (IXGBE_VF_API_NEGOTIATE | 875 IXGBE_VT_MSGTYPE_SUCCESS)) { 876 hw->api_version = api; 877 return 0; 878 } 879 880 err = IXGBE_ERR_INVALID_ARGUMENT; 881 } 882 883 return err; 884 } 885 886 /** 887 * ixgbevf_hv_negotiate_api_version_vf - Negotiate supported API version 888 * @hw: pointer to the HW structure 889 * @api: integer containing requested API version 890 * Hyper-V version - only ixgbe_mbox_api_10 supported. 891 **/ 892 static int ixgbevf_hv_negotiate_api_version_vf(struct ixgbe_hw *hw, int api) 893 { 894 /* Hyper-V only supports api version ixgbe_mbox_api_10 */ 895 if (api != ixgbe_mbox_api_10) 896 return IXGBE_ERR_INVALID_ARGUMENT; 897 898 return 0; 899 } 900 901 int ixgbevf_get_queues(struct ixgbe_hw *hw, unsigned int *num_tcs, 902 unsigned int *default_tc) 903 { 904 int err; 905 u32 msg[5]; 906 907 /* do nothing if API doesn't support ixgbevf_get_queues */ 908 switch (hw->api_version) { 909 case ixgbe_mbox_api_11: 910 case ixgbe_mbox_api_12: 911 case ixgbe_mbox_api_13: 912 case ixgbe_mbox_api_14: 913 case ixgbe_mbox_api_15: 914 break; 915 default: 916 return 0; 917 } 918 919 /* Fetch queue configuration from the PF */ 920 msg[0] = IXGBE_VF_GET_QUEUE; 921 msg[1] = msg[2] = msg[3] = msg[4] = 0; 922 923 err = ixgbevf_write_msg_read_ack(hw, msg, msg, ARRAY_SIZE(msg)); 924 if (!err) { 925 msg[0] &= ~IXGBE_VT_MSGTYPE_CTS; 926 927 /* if we we didn't get an ACK there must have been 928 * some sort of mailbox error so we should treat it 929 * as such 930 */ 931 if (msg[0] != (IXGBE_VF_GET_QUEUE | IXGBE_VT_MSGTYPE_SUCCESS)) 932 return IXGBE_ERR_MBX; 933 934 /* record and validate values from message */ 935 hw->mac.max_tx_queues = msg[IXGBE_VF_TX_QUEUES]; 936 if (hw->mac.max_tx_queues == 0 || 937 hw->mac.max_tx_queues > IXGBE_VF_MAX_TX_QUEUES) 938 hw->mac.max_tx_queues = IXGBE_VF_MAX_TX_QUEUES; 939 940 hw->mac.max_rx_queues = msg[IXGBE_VF_RX_QUEUES]; 941 if (hw->mac.max_rx_queues == 0 || 942 hw->mac.max_rx_queues > IXGBE_VF_MAX_RX_QUEUES) 943 hw->mac.max_rx_queues = IXGBE_VF_MAX_RX_QUEUES; 944 945 *num_tcs = msg[IXGBE_VF_TRANS_VLAN]; 946 /* in case of unknown state assume we cannot tag frames */ 947 if (*num_tcs > hw->mac.max_rx_queues) 948 *num_tcs = 1; 949 950 *default_tc = msg[IXGBE_VF_DEF_QUEUE]; 951 /* default to queue 0 on out-of-bounds queue number */ 952 if (*default_tc >= hw->mac.max_tx_queues) 953 *default_tc = 0; 954 } 955 956 return err; 957 } 958 959 static const struct ixgbe_mac_operations ixgbevf_mac_ops = { 960 .init_hw = ixgbevf_init_hw_vf, 961 .reset_hw = ixgbevf_reset_hw_vf, 962 .start_hw = ixgbevf_start_hw_vf, 963 .get_mac_addr = ixgbevf_get_mac_addr_vf, 964 .stop_adapter = ixgbevf_stop_hw_vf, 965 .setup_link = ixgbevf_setup_mac_link_vf, 966 .check_link = ixgbevf_check_mac_link_vf, 967 .negotiate_api_version = ixgbevf_negotiate_api_version_vf, 968 .set_rar = ixgbevf_set_rar_vf, 969 .update_mc_addr_list = ixgbevf_update_mc_addr_list_vf, 970 .update_xcast_mode = ixgbevf_update_xcast_mode, 971 .set_uc_addr = ixgbevf_set_uc_addr_vf, 972 .set_vfta = ixgbevf_set_vfta_vf, 973 .set_rlpml = ixgbevf_set_rlpml_vf, 974 }; 975 976 static const struct ixgbe_mac_operations ixgbevf_hv_mac_ops = { 977 .init_hw = ixgbevf_init_hw_vf, 978 .reset_hw = ixgbevf_hv_reset_hw_vf, 979 .start_hw = ixgbevf_start_hw_vf, 980 .get_mac_addr = ixgbevf_get_mac_addr_vf, 981 .stop_adapter = ixgbevf_stop_hw_vf, 982 .setup_link = ixgbevf_setup_mac_link_vf, 983 .check_link = ixgbevf_hv_check_mac_link_vf, 984 .negotiate_api_version = ixgbevf_hv_negotiate_api_version_vf, 985 .set_rar = ixgbevf_hv_set_rar_vf, 986 .update_mc_addr_list = ixgbevf_hv_update_mc_addr_list_vf, 987 .update_xcast_mode = ixgbevf_hv_update_xcast_mode, 988 .set_uc_addr = ixgbevf_hv_set_uc_addr_vf, 989 .set_vfta = ixgbevf_hv_set_vfta_vf, 990 .set_rlpml = ixgbevf_hv_set_rlpml_vf, 991 }; 992 993 const struct ixgbevf_info ixgbevf_82599_vf_info = { 994 .mac = ixgbe_mac_82599_vf, 995 .mac_ops = &ixgbevf_mac_ops, 996 }; 997 998 const struct ixgbevf_info ixgbevf_82599_vf_hv_info = { 999 .mac = ixgbe_mac_82599_vf, 1000 .mac_ops = &ixgbevf_hv_mac_ops, 1001 }; 1002 1003 const struct ixgbevf_info ixgbevf_X540_vf_info = { 1004 .mac = ixgbe_mac_X540_vf, 1005 .mac_ops = &ixgbevf_mac_ops, 1006 }; 1007 1008 const struct ixgbevf_info ixgbevf_X540_vf_hv_info = { 1009 .mac = ixgbe_mac_X540_vf, 1010 .mac_ops = &ixgbevf_hv_mac_ops, 1011 }; 1012 1013 const struct ixgbevf_info ixgbevf_X550_vf_info = { 1014 .mac = ixgbe_mac_X550_vf, 1015 .mac_ops = &ixgbevf_mac_ops, 1016 }; 1017 1018 const struct ixgbevf_info ixgbevf_X550_vf_hv_info = { 1019 .mac = ixgbe_mac_X550_vf, 1020 .mac_ops = &ixgbevf_hv_mac_ops, 1021 }; 1022 1023 const struct ixgbevf_info ixgbevf_X550EM_x_vf_info = { 1024 .mac = ixgbe_mac_X550EM_x_vf, 1025 .mac_ops = &ixgbevf_mac_ops, 1026 }; 1027 1028 const struct ixgbevf_info ixgbevf_X550EM_x_vf_hv_info = { 1029 .mac = ixgbe_mac_X550EM_x_vf, 1030 .mac_ops = &ixgbevf_hv_mac_ops, 1031 }; 1032 1033 const struct ixgbevf_info ixgbevf_x550em_a_vf_info = { 1034 .mac = ixgbe_mac_x550em_a_vf, 1035 .mac_ops = &ixgbevf_mac_ops, 1036 }; 1037