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, 3); 288 if (!ret_val) { 289 msgbuf[0] &= ~IXGBE_VT_MSGTYPE_CTS; 290 291 if (msgbuf[0] == (msgbuf_chk | IXGBE_VT_MSGTYPE_NACK)) 292 return -ENOMEM; 293 } 294 295 return ret_val; 296 } 297 298 static s32 ixgbevf_hv_set_uc_addr_vf(struct ixgbe_hw *hw, u32 index, u8 *addr) 299 { 300 return -EOPNOTSUPP; 301 } 302 303 /** 304 * ixgbevf_get_reta_locked - get the RSS redirection table (RETA) contents. 305 * @adapter: pointer to the port handle 306 * @reta: buffer to fill with RETA contents. 307 * @num_rx_queues: Number of Rx queues configured for this port 308 * 309 * The "reta" buffer should be big enough to contain 32 registers. 310 * 311 * Returns: 0 on success. 312 * if API doesn't support this operation - (-EOPNOTSUPP). 313 */ 314 int ixgbevf_get_reta_locked(struct ixgbe_hw *hw, u32 *reta, int num_rx_queues) 315 { 316 int err, i, j; 317 u32 msgbuf[IXGBE_VFMAILBOX_SIZE]; 318 u32 *hw_reta = &msgbuf[1]; 319 u32 mask = 0; 320 321 /* We have to use a mailbox for 82599 and x540 devices only. 322 * For these devices RETA has 128 entries. 323 * Also these VFs support up to 4 RSS queues. Therefore PF will compress 324 * 16 RETA entries in each DWORD giving 2 bits to each entry. 325 */ 326 int dwords = IXGBEVF_82599_RETA_SIZE / 16; 327 328 /* We support the RSS querying for 82599 and x540 devices only. 329 * Thus return an error if API doesn't support RETA querying or querying 330 * is not supported for this device type. 331 */ 332 if (hw->api_version != ixgbe_mbox_api_12 || 333 hw->mac.type >= ixgbe_mac_X550_vf) 334 return -EOPNOTSUPP; 335 336 msgbuf[0] = IXGBE_VF_GET_RETA; 337 338 err = hw->mbx.ops.write_posted(hw, msgbuf, 1); 339 340 if (err) 341 return err; 342 343 err = hw->mbx.ops.read_posted(hw, msgbuf, dwords + 1); 344 345 if (err) 346 return err; 347 348 msgbuf[0] &= ~IXGBE_VT_MSGTYPE_CTS; 349 350 /* If the operation has been refused by a PF return -EPERM */ 351 if (msgbuf[0] == (IXGBE_VF_GET_RETA | IXGBE_VT_MSGTYPE_NACK)) 352 return -EPERM; 353 354 /* If we didn't get an ACK there must have been 355 * some sort of mailbox error so we should treat it 356 * as such. 357 */ 358 if (msgbuf[0] != (IXGBE_VF_GET_RETA | IXGBE_VT_MSGTYPE_ACK)) 359 return IXGBE_ERR_MBX; 360 361 /* ixgbevf doesn't support more than 2 queues at the moment */ 362 if (num_rx_queues > 1) 363 mask = 0x1; 364 365 for (i = 0; i < dwords; i++) 366 for (j = 0; j < 16; j++) 367 reta[i * 16 + j] = (hw_reta[i] >> (2 * j)) & mask; 368 369 return 0; 370 } 371 372 /** 373 * ixgbevf_get_rss_key_locked - get the RSS Random Key 374 * @hw: pointer to the HW structure 375 * @rss_key: buffer to fill with RSS Hash Key contents. 376 * 377 * The "rss_key" buffer should be big enough to contain 10 registers. 378 * 379 * Returns: 0 on success. 380 * if API doesn't support this operation - (-EOPNOTSUPP). 381 */ 382 int ixgbevf_get_rss_key_locked(struct ixgbe_hw *hw, u8 *rss_key) 383 { 384 int err; 385 u32 msgbuf[IXGBE_VFMAILBOX_SIZE]; 386 387 /* We currently support the RSS Random Key retrieval for 82599 and x540 388 * devices only. 389 * 390 * Thus return an error if API doesn't support RSS Random Key retrieval 391 * or if the operation is not supported for this device type. 392 */ 393 if (hw->api_version != ixgbe_mbox_api_12 || 394 hw->mac.type >= ixgbe_mac_X550_vf) 395 return -EOPNOTSUPP; 396 397 msgbuf[0] = IXGBE_VF_GET_RSS_KEY; 398 err = hw->mbx.ops.write_posted(hw, msgbuf, 1); 399 400 if (err) 401 return err; 402 403 err = hw->mbx.ops.read_posted(hw, msgbuf, 11); 404 405 if (err) 406 return err; 407 408 msgbuf[0] &= ~IXGBE_VT_MSGTYPE_CTS; 409 410 /* If the operation has been refused by a PF return -EPERM */ 411 if (msgbuf[0] == (IXGBE_VF_GET_RETA | IXGBE_VT_MSGTYPE_NACK)) 412 return -EPERM; 413 414 /* If we didn't get an ACK there must have been 415 * some sort of mailbox error so we should treat it 416 * as such. 417 */ 418 if (msgbuf[0] != (IXGBE_VF_GET_RSS_KEY | IXGBE_VT_MSGTYPE_ACK)) 419 return IXGBE_ERR_MBX; 420 421 memcpy(rss_key, msgbuf + 1, IXGBEVF_RSS_HASH_KEY_SIZE); 422 423 return 0; 424 } 425 426 /** 427 * ixgbevf_set_rar_vf - set device MAC address 428 * @hw: pointer to hardware structure 429 * @index: Receive address register to write 430 * @addr: Address to put into receive address register 431 * @vmdq: Unused in this implementation 432 **/ 433 static s32 ixgbevf_set_rar_vf(struct ixgbe_hw *hw, u32 index, u8 *addr, 434 u32 vmdq) 435 { 436 u32 msgbuf[3]; 437 u8 *msg_addr = (u8 *)(&msgbuf[1]); 438 s32 ret_val; 439 440 memset(msgbuf, 0, sizeof(msgbuf)); 441 msgbuf[0] = IXGBE_VF_SET_MAC_ADDR; 442 ether_addr_copy(msg_addr, addr); 443 444 ret_val = ixgbevf_write_msg_read_ack(hw, msgbuf, msgbuf, 2); 445 446 msgbuf[0] &= ~IXGBE_VT_MSGTYPE_CTS; 447 448 /* if nacked the address was rejected, use "perm_addr" */ 449 if (!ret_val && 450 (msgbuf[0] == (IXGBE_VF_SET_MAC_ADDR | IXGBE_VT_MSGTYPE_NACK))) { 451 ixgbevf_get_mac_addr_vf(hw, hw->mac.addr); 452 return IXGBE_ERR_MBX; 453 } 454 455 return ret_val; 456 } 457 458 /** 459 * ixgbevf_hv_set_rar_vf - set device MAC address Hyper-V variant 460 * @hw: pointer to hardware structure 461 * @index: Receive address register to write 462 * @addr: Address to put into receive address register 463 * @vmdq: Unused in this implementation 464 * 465 * We don't really allow setting the device MAC address. However, 466 * if the address being set is the permanent MAC address we will 467 * permit that. 468 **/ 469 static s32 ixgbevf_hv_set_rar_vf(struct ixgbe_hw *hw, u32 index, u8 *addr, 470 u32 vmdq) 471 { 472 if (ether_addr_equal(addr, hw->mac.perm_addr)) 473 return 0; 474 475 return -EOPNOTSUPP; 476 } 477 478 /** 479 * ixgbevf_update_mc_addr_list_vf - Update Multicast addresses 480 * @hw: pointer to the HW structure 481 * @netdev: pointer to net device structure 482 * 483 * Updates the Multicast Table Array. 484 **/ 485 static s32 ixgbevf_update_mc_addr_list_vf(struct ixgbe_hw *hw, 486 struct net_device *netdev) 487 { 488 struct netdev_hw_addr *ha; 489 u32 msgbuf[IXGBE_VFMAILBOX_SIZE]; 490 u16 *vector_list = (u16 *)&msgbuf[1]; 491 u32 cnt, i; 492 493 /* Each entry in the list uses 1 16 bit word. We have 30 494 * 16 bit words available in our HW msg buffer (minus 1 for the 495 * msg type). That's 30 hash values if we pack 'em right. If 496 * there are more than 30 MC addresses to add then punt the 497 * extras for now and then add code to handle more than 30 later. 498 * It would be unusual for a server to request that many multi-cast 499 * addresses except for in large enterprise network environments. 500 */ 501 502 cnt = netdev_mc_count(netdev); 503 if (cnt > 30) 504 cnt = 30; 505 msgbuf[0] = IXGBE_VF_SET_MULTICAST; 506 msgbuf[0] |= cnt << IXGBE_VT_MSGINFO_SHIFT; 507 508 i = 0; 509 netdev_for_each_mc_addr(ha, netdev) { 510 if (i == cnt) 511 break; 512 if (is_link_local_ether_addr(ha->addr)) 513 continue; 514 515 vector_list[i++] = ixgbevf_mta_vector(hw, ha->addr); 516 } 517 518 ixgbevf_write_msg_read_ack(hw, msgbuf, msgbuf, IXGBE_VFMAILBOX_SIZE); 519 520 return 0; 521 } 522 523 /** 524 * Hyper-V variant - just a stub. 525 */ 526 static s32 ixgbevf_hv_update_mc_addr_list_vf(struct ixgbe_hw *hw, 527 struct net_device *netdev) 528 { 529 return -EOPNOTSUPP; 530 } 531 532 /** 533 * ixgbevf_update_xcast_mode - Update Multicast mode 534 * @hw: pointer to the HW structure 535 * @xcast_mode: new multicast mode 536 * 537 * Updates the Multicast Mode of VF. 538 **/ 539 static s32 ixgbevf_update_xcast_mode(struct ixgbe_hw *hw, int xcast_mode) 540 { 541 u32 msgbuf[2]; 542 s32 err; 543 544 switch (hw->api_version) { 545 case ixgbe_mbox_api_12: 546 break; 547 default: 548 return -EOPNOTSUPP; 549 } 550 551 msgbuf[0] = IXGBE_VF_UPDATE_XCAST_MODE; 552 msgbuf[1] = xcast_mode; 553 554 err = ixgbevf_write_msg_read_ack(hw, msgbuf, msgbuf, 2); 555 if (err) 556 return err; 557 558 msgbuf[0] &= ~IXGBE_VT_MSGTYPE_CTS; 559 if (msgbuf[0] == (IXGBE_VF_UPDATE_XCAST_MODE | IXGBE_VT_MSGTYPE_NACK)) 560 return -EPERM; 561 562 return 0; 563 } 564 565 /** 566 * Hyper-V variant - just a stub. 567 */ 568 static s32 ixgbevf_hv_update_xcast_mode(struct ixgbe_hw *hw, int xcast_mode) 569 { 570 return -EOPNOTSUPP; 571 } 572 573 /** 574 * ixgbevf_set_vfta_vf - Set/Unset VLAN filter table address 575 * @hw: pointer to the HW structure 576 * @vlan: 12 bit VLAN ID 577 * @vind: unused by VF drivers 578 * @vlan_on: if true then set bit, else clear bit 579 **/ 580 static s32 ixgbevf_set_vfta_vf(struct ixgbe_hw *hw, u32 vlan, u32 vind, 581 bool vlan_on) 582 { 583 u32 msgbuf[2]; 584 s32 err; 585 586 msgbuf[0] = IXGBE_VF_SET_VLAN; 587 msgbuf[1] = vlan; 588 /* Setting the 8 bit field MSG INFO to TRUE indicates "add" */ 589 msgbuf[0] |= vlan_on << IXGBE_VT_MSGINFO_SHIFT; 590 591 err = ixgbevf_write_msg_read_ack(hw, msgbuf, msgbuf, 2); 592 if (err) 593 goto mbx_err; 594 595 /* remove extra bits from the message */ 596 msgbuf[0] &= ~IXGBE_VT_MSGTYPE_CTS; 597 msgbuf[0] &= ~(0xFF << IXGBE_VT_MSGINFO_SHIFT); 598 599 if (msgbuf[0] != (IXGBE_VF_SET_VLAN | IXGBE_VT_MSGTYPE_ACK)) 600 err = IXGBE_ERR_INVALID_ARGUMENT; 601 602 mbx_err: 603 return err; 604 } 605 606 /** 607 * Hyper-V variant - just a stub. 608 */ 609 static s32 ixgbevf_hv_set_vfta_vf(struct ixgbe_hw *hw, u32 vlan, u32 vind, 610 bool vlan_on) 611 { 612 return -EOPNOTSUPP; 613 } 614 615 /** 616 * ixgbevf_setup_mac_link_vf - Setup MAC link settings 617 * @hw: pointer to hardware structure 618 * @speed: Unused in this implementation 619 * @autoneg: Unused in this implementation 620 * @autoneg_wait_to_complete: Unused in this implementation 621 * 622 * Do nothing and return success. VF drivers are not allowed to change 623 * global settings. Maintained for driver compatibility. 624 **/ 625 static s32 ixgbevf_setup_mac_link_vf(struct ixgbe_hw *hw, 626 ixgbe_link_speed speed, bool autoneg, 627 bool autoneg_wait_to_complete) 628 { 629 return 0; 630 } 631 632 /** 633 * ixgbevf_check_mac_link_vf - Get link/speed status 634 * @hw: pointer to hardware structure 635 * @speed: pointer to link speed 636 * @link_up: true is link is up, false otherwise 637 * @autoneg_wait_to_complete: true when waiting for completion is needed 638 * 639 * Reads the links register to determine if link is up and the current speed 640 **/ 641 static s32 ixgbevf_check_mac_link_vf(struct ixgbe_hw *hw, 642 ixgbe_link_speed *speed, 643 bool *link_up, 644 bool autoneg_wait_to_complete) 645 { 646 struct ixgbe_mbx_info *mbx = &hw->mbx; 647 struct ixgbe_mac_info *mac = &hw->mac; 648 s32 ret_val = 0; 649 u32 links_reg; 650 u32 in_msg = 0; 651 652 /* If we were hit with a reset drop the link */ 653 if (!mbx->ops.check_for_rst(hw) || !mbx->timeout) 654 mac->get_link_status = true; 655 656 if (!mac->get_link_status) 657 goto out; 658 659 /* if link status is down no point in checking to see if pf is up */ 660 links_reg = IXGBE_READ_REG(hw, IXGBE_VFLINKS); 661 if (!(links_reg & IXGBE_LINKS_UP)) 662 goto out; 663 664 /* for SFP+ modules and DA cables on 82599 it can take up to 500usecs 665 * before the link status is correct 666 */ 667 if (mac->type == ixgbe_mac_82599_vf) { 668 int i; 669 670 for (i = 0; i < 5; i++) { 671 udelay(100); 672 links_reg = IXGBE_READ_REG(hw, IXGBE_VFLINKS); 673 674 if (!(links_reg & IXGBE_LINKS_UP)) 675 goto out; 676 } 677 } 678 679 switch (links_reg & IXGBE_LINKS_SPEED_82599) { 680 case IXGBE_LINKS_SPEED_10G_82599: 681 *speed = IXGBE_LINK_SPEED_10GB_FULL; 682 break; 683 case IXGBE_LINKS_SPEED_1G_82599: 684 *speed = IXGBE_LINK_SPEED_1GB_FULL; 685 break; 686 case IXGBE_LINKS_SPEED_100_82599: 687 *speed = IXGBE_LINK_SPEED_100_FULL; 688 break; 689 } 690 691 /* if the read failed it could just be a mailbox collision, best wait 692 * until we are called again and don't report an error 693 */ 694 if (mbx->ops.read(hw, &in_msg, 1)) 695 goto out; 696 697 if (!(in_msg & IXGBE_VT_MSGTYPE_CTS)) { 698 /* msg is not CTS and is NACK we must have lost CTS status */ 699 if (in_msg & IXGBE_VT_MSGTYPE_NACK) 700 ret_val = -1; 701 goto out; 702 } 703 704 /* the pf is talking, if we timed out in the past we reinit */ 705 if (!mbx->timeout) { 706 ret_val = -1; 707 goto out; 708 } 709 710 /* if we passed all the tests above then the link is up and we no 711 * longer need to check for link 712 */ 713 mac->get_link_status = false; 714 715 out: 716 *link_up = !mac->get_link_status; 717 return ret_val; 718 } 719 720 /** 721 * Hyper-V variant; there is no mailbox communication. 722 */ 723 static s32 ixgbevf_hv_check_mac_link_vf(struct ixgbe_hw *hw, 724 ixgbe_link_speed *speed, 725 bool *link_up, 726 bool autoneg_wait_to_complete) 727 { 728 struct ixgbe_mbx_info *mbx = &hw->mbx; 729 struct ixgbe_mac_info *mac = &hw->mac; 730 u32 links_reg; 731 732 /* If we were hit with a reset drop the link */ 733 if (!mbx->ops.check_for_rst(hw) || !mbx->timeout) 734 mac->get_link_status = true; 735 736 if (!mac->get_link_status) 737 goto out; 738 739 /* if link status is down no point in checking to see if pf is up */ 740 links_reg = IXGBE_READ_REG(hw, IXGBE_VFLINKS); 741 if (!(links_reg & IXGBE_LINKS_UP)) 742 goto out; 743 744 /* for SFP+ modules and DA cables on 82599 it can take up to 500usecs 745 * before the link status is correct 746 */ 747 if (mac->type == ixgbe_mac_82599_vf) { 748 int i; 749 750 for (i = 0; i < 5; i++) { 751 udelay(100); 752 links_reg = IXGBE_READ_REG(hw, IXGBE_VFLINKS); 753 754 if (!(links_reg & IXGBE_LINKS_UP)) 755 goto out; 756 } 757 } 758 759 switch (links_reg & IXGBE_LINKS_SPEED_82599) { 760 case IXGBE_LINKS_SPEED_10G_82599: 761 *speed = IXGBE_LINK_SPEED_10GB_FULL; 762 break; 763 case IXGBE_LINKS_SPEED_1G_82599: 764 *speed = IXGBE_LINK_SPEED_1GB_FULL; 765 break; 766 case IXGBE_LINKS_SPEED_100_82599: 767 *speed = IXGBE_LINK_SPEED_100_FULL; 768 break; 769 } 770 771 /* if we passed all the tests above then the link is up and we no 772 * longer need to check for link 773 */ 774 mac->get_link_status = false; 775 776 out: 777 *link_up = !mac->get_link_status; 778 return 0; 779 } 780 781 /** 782 * ixgbevf_set_rlpml_vf - Set the maximum receive packet length 783 * @hw: pointer to the HW structure 784 * @max_size: value to assign to max frame size 785 **/ 786 static s32 ixgbevf_set_rlpml_vf(struct ixgbe_hw *hw, u16 max_size) 787 { 788 u32 msgbuf[2]; 789 s32 ret_val; 790 791 msgbuf[0] = IXGBE_VF_SET_LPE; 792 msgbuf[1] = max_size; 793 794 ret_val = ixgbevf_write_msg_read_ack(hw, msgbuf, msgbuf, 2); 795 if (ret_val) 796 return ret_val; 797 if ((msgbuf[0] & IXGBE_VF_SET_LPE) && 798 (msgbuf[0] & IXGBE_VT_MSGTYPE_NACK)) 799 return IXGBE_ERR_MBX; 800 801 return 0; 802 } 803 804 /** 805 * ixgbevf_hv_set_rlpml_vf - Set the maximum receive packet length 806 * @hw: pointer to the HW structure 807 * @max_size: value to assign to max frame size 808 * Hyper-V variant. 809 **/ 810 static s32 ixgbevf_hv_set_rlpml_vf(struct ixgbe_hw *hw, u16 max_size) 811 { 812 u32 reg; 813 814 /* If we are on Hyper-V, we implement this functionality 815 * differently. 816 */ 817 reg = IXGBE_READ_REG(hw, IXGBE_VFRXDCTL(0)); 818 /* CRC == 4 */ 819 reg |= ((max_size + 4) | IXGBE_RXDCTL_RLPML_EN); 820 IXGBE_WRITE_REG(hw, IXGBE_VFRXDCTL(0), reg); 821 822 return 0; 823 } 824 825 /** 826 * ixgbevf_negotiate_api_version_vf - Negotiate supported API version 827 * @hw: pointer to the HW structure 828 * @api: integer containing requested API version 829 **/ 830 static int ixgbevf_negotiate_api_version_vf(struct ixgbe_hw *hw, int api) 831 { 832 int err; 833 u32 msg[3]; 834 835 /* Negotiate the mailbox API version */ 836 msg[0] = IXGBE_VF_API_NEGOTIATE; 837 msg[1] = api; 838 msg[2] = 0; 839 840 err = ixgbevf_write_msg_read_ack(hw, msg, msg, 3); 841 if (!err) { 842 msg[0] &= ~IXGBE_VT_MSGTYPE_CTS; 843 844 /* Store value and return 0 on success */ 845 if (msg[0] == (IXGBE_VF_API_NEGOTIATE | IXGBE_VT_MSGTYPE_ACK)) { 846 hw->api_version = api; 847 return 0; 848 } 849 850 err = IXGBE_ERR_INVALID_ARGUMENT; 851 } 852 853 return err; 854 } 855 856 /** 857 * ixgbevf_hv_negotiate_api_version_vf - Negotiate supported API version 858 * @hw: pointer to the HW structure 859 * @api: integer containing requested API version 860 * Hyper-V version - only ixgbe_mbox_api_10 supported. 861 **/ 862 static int ixgbevf_hv_negotiate_api_version_vf(struct ixgbe_hw *hw, int api) 863 { 864 /* Hyper-V only supports api version ixgbe_mbox_api_10 */ 865 if (api != ixgbe_mbox_api_10) 866 return IXGBE_ERR_INVALID_ARGUMENT; 867 868 return 0; 869 } 870 871 int ixgbevf_get_queues(struct ixgbe_hw *hw, unsigned int *num_tcs, 872 unsigned int *default_tc) 873 { 874 int err; 875 u32 msg[5]; 876 877 /* do nothing if API doesn't support ixgbevf_get_queues */ 878 switch (hw->api_version) { 879 case ixgbe_mbox_api_11: 880 case ixgbe_mbox_api_12: 881 break; 882 default: 883 return 0; 884 } 885 886 /* Fetch queue configuration from the PF */ 887 msg[0] = IXGBE_VF_GET_QUEUE; 888 msg[1] = msg[2] = msg[3] = msg[4] = 0; 889 890 err = ixgbevf_write_msg_read_ack(hw, msg, msg, 5); 891 if (!err) { 892 msg[0] &= ~IXGBE_VT_MSGTYPE_CTS; 893 894 /* if we we didn't get an ACK there must have been 895 * some sort of mailbox error so we should treat it 896 * as such 897 */ 898 if (msg[0] != (IXGBE_VF_GET_QUEUE | IXGBE_VT_MSGTYPE_ACK)) 899 return IXGBE_ERR_MBX; 900 901 /* record and validate values from message */ 902 hw->mac.max_tx_queues = msg[IXGBE_VF_TX_QUEUES]; 903 if (hw->mac.max_tx_queues == 0 || 904 hw->mac.max_tx_queues > IXGBE_VF_MAX_TX_QUEUES) 905 hw->mac.max_tx_queues = IXGBE_VF_MAX_TX_QUEUES; 906 907 hw->mac.max_rx_queues = msg[IXGBE_VF_RX_QUEUES]; 908 if (hw->mac.max_rx_queues == 0 || 909 hw->mac.max_rx_queues > IXGBE_VF_MAX_RX_QUEUES) 910 hw->mac.max_rx_queues = IXGBE_VF_MAX_RX_QUEUES; 911 912 *num_tcs = msg[IXGBE_VF_TRANS_VLAN]; 913 /* in case of unknown state assume we cannot tag frames */ 914 if (*num_tcs > hw->mac.max_rx_queues) 915 *num_tcs = 1; 916 917 *default_tc = msg[IXGBE_VF_DEF_QUEUE]; 918 /* default to queue 0 on out-of-bounds queue number */ 919 if (*default_tc >= hw->mac.max_tx_queues) 920 *default_tc = 0; 921 } 922 923 return err; 924 } 925 926 static const struct ixgbe_mac_operations ixgbevf_mac_ops = { 927 .init_hw = ixgbevf_init_hw_vf, 928 .reset_hw = ixgbevf_reset_hw_vf, 929 .start_hw = ixgbevf_start_hw_vf, 930 .get_mac_addr = ixgbevf_get_mac_addr_vf, 931 .stop_adapter = ixgbevf_stop_hw_vf, 932 .setup_link = ixgbevf_setup_mac_link_vf, 933 .check_link = ixgbevf_check_mac_link_vf, 934 .negotiate_api_version = ixgbevf_negotiate_api_version_vf, 935 .set_rar = ixgbevf_set_rar_vf, 936 .update_mc_addr_list = ixgbevf_update_mc_addr_list_vf, 937 .update_xcast_mode = ixgbevf_update_xcast_mode, 938 .set_uc_addr = ixgbevf_set_uc_addr_vf, 939 .set_vfta = ixgbevf_set_vfta_vf, 940 .set_rlpml = ixgbevf_set_rlpml_vf, 941 }; 942 943 static const struct ixgbe_mac_operations ixgbevf_hv_mac_ops = { 944 .init_hw = ixgbevf_init_hw_vf, 945 .reset_hw = ixgbevf_hv_reset_hw_vf, 946 .start_hw = ixgbevf_start_hw_vf, 947 .get_mac_addr = ixgbevf_get_mac_addr_vf, 948 .stop_adapter = ixgbevf_stop_hw_vf, 949 .setup_link = ixgbevf_setup_mac_link_vf, 950 .check_link = ixgbevf_hv_check_mac_link_vf, 951 .negotiate_api_version = ixgbevf_hv_negotiate_api_version_vf, 952 .set_rar = ixgbevf_hv_set_rar_vf, 953 .update_mc_addr_list = ixgbevf_hv_update_mc_addr_list_vf, 954 .update_xcast_mode = ixgbevf_hv_update_xcast_mode, 955 .set_uc_addr = ixgbevf_hv_set_uc_addr_vf, 956 .set_vfta = ixgbevf_hv_set_vfta_vf, 957 .set_rlpml = ixgbevf_hv_set_rlpml_vf, 958 }; 959 960 const struct ixgbevf_info ixgbevf_82599_vf_info = { 961 .mac = ixgbe_mac_82599_vf, 962 .mac_ops = &ixgbevf_mac_ops, 963 }; 964 965 const struct ixgbevf_info ixgbevf_82599_vf_hv_info = { 966 .mac = ixgbe_mac_82599_vf, 967 .mac_ops = &ixgbevf_hv_mac_ops, 968 }; 969 970 const struct ixgbevf_info ixgbevf_X540_vf_info = { 971 .mac = ixgbe_mac_X540_vf, 972 .mac_ops = &ixgbevf_mac_ops, 973 }; 974 975 const struct ixgbevf_info ixgbevf_X540_vf_hv_info = { 976 .mac = ixgbe_mac_X540_vf, 977 .mac_ops = &ixgbevf_hv_mac_ops, 978 }; 979 980 const struct ixgbevf_info ixgbevf_X550_vf_info = { 981 .mac = ixgbe_mac_X550_vf, 982 .mac_ops = &ixgbevf_mac_ops, 983 }; 984 985 const struct ixgbevf_info ixgbevf_X550_vf_hv_info = { 986 .mac = ixgbe_mac_X550_vf, 987 .mac_ops = &ixgbevf_hv_mac_ops, 988 }; 989 990 const struct ixgbevf_info ixgbevf_X550EM_x_vf_info = { 991 .mac = ixgbe_mac_X550EM_x_vf, 992 .mac_ops = &ixgbevf_mac_ops, 993 }; 994 995 const struct ixgbevf_info ixgbevf_X550EM_x_vf_hv_info = { 996 .mac = ixgbe_mac_X550EM_x_vf, 997 .mac_ops = &ixgbevf_hv_mac_ops, 998 }; 999 1000 const struct ixgbevf_info ixgbevf_x550em_a_vf_info = { 1001 .mac = ixgbe_mac_x550em_a_vf, 1002 .mac_ops = &ixgbevf_mac_ops, 1003 }; 1004