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