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 if (hw->api_version != ixgbe_mbox_api_12 || 334 hw->mac.type >= ixgbe_mac_X550_vf) 335 return -EOPNOTSUPP; 336 337 msgbuf[0] = IXGBE_VF_GET_RETA; 338 339 err = hw->mbx.ops.write_posted(hw, msgbuf, 1); 340 341 if (err) 342 return err; 343 344 err = hw->mbx.ops.read_posted(hw, msgbuf, dwords + 1); 345 346 if (err) 347 return err; 348 349 msgbuf[0] &= ~IXGBE_VT_MSGTYPE_CTS; 350 351 /* If the operation has been refused by a PF return -EPERM */ 352 if (msgbuf[0] == (IXGBE_VF_GET_RETA | IXGBE_VT_MSGTYPE_NACK)) 353 return -EPERM; 354 355 /* If we didn't get an ACK there must have been 356 * some sort of mailbox error so we should treat it 357 * as such. 358 */ 359 if (msgbuf[0] != (IXGBE_VF_GET_RETA | IXGBE_VT_MSGTYPE_ACK)) 360 return IXGBE_ERR_MBX; 361 362 /* ixgbevf doesn't support more than 2 queues at the moment */ 363 if (num_rx_queues > 1) 364 mask = 0x1; 365 366 for (i = 0; i < dwords; i++) 367 for (j = 0; j < 16; j++) 368 reta[i * 16 + j] = (hw_reta[i] >> (2 * j)) & mask; 369 370 return 0; 371 } 372 373 /** 374 * ixgbevf_get_rss_key_locked - get the RSS Random Key 375 * @hw: pointer to the HW structure 376 * @rss_key: buffer to fill with RSS Hash Key contents. 377 * 378 * The "rss_key" buffer should be big enough to contain 10 registers. 379 * 380 * Returns: 0 on success. 381 * if API doesn't support this operation - (-EOPNOTSUPP). 382 */ 383 int ixgbevf_get_rss_key_locked(struct ixgbe_hw *hw, u8 *rss_key) 384 { 385 int err; 386 u32 msgbuf[IXGBE_VFMAILBOX_SIZE]; 387 388 /* We currently support the RSS Random Key retrieval for 82599 and x540 389 * devices only. 390 * 391 * Thus return an error if API doesn't support RSS Random Key retrieval 392 * or if the operation is not supported for this device type. 393 */ 394 if (hw->api_version != ixgbe_mbox_api_12 || 395 hw->mac.type >= ixgbe_mac_X550_vf) 396 return -EOPNOTSUPP; 397 398 msgbuf[0] = IXGBE_VF_GET_RSS_KEY; 399 err = hw->mbx.ops.write_posted(hw, msgbuf, 1); 400 401 if (err) 402 return err; 403 404 err = hw->mbx.ops.read_posted(hw, msgbuf, 11); 405 406 if (err) 407 return err; 408 409 msgbuf[0] &= ~IXGBE_VT_MSGTYPE_CTS; 410 411 /* If the operation has been refused by a PF return -EPERM */ 412 if (msgbuf[0] == (IXGBE_VF_GET_RETA | IXGBE_VT_MSGTYPE_NACK)) 413 return -EPERM; 414 415 /* If we didn't get an ACK there must have been 416 * some sort of mailbox error so we should treat it 417 * as such. 418 */ 419 if (msgbuf[0] != (IXGBE_VF_GET_RSS_KEY | IXGBE_VT_MSGTYPE_ACK)) 420 return IXGBE_ERR_MBX; 421 422 memcpy(rss_key, msgbuf + 1, IXGBEVF_RSS_HASH_KEY_SIZE); 423 424 return 0; 425 } 426 427 /** 428 * ixgbevf_set_rar_vf - set device MAC address 429 * @hw: pointer to hardware structure 430 * @index: Receive address register to write 431 * @addr: Address to put into receive address register 432 * @vmdq: Unused in this implementation 433 **/ 434 static s32 ixgbevf_set_rar_vf(struct ixgbe_hw *hw, u32 index, u8 *addr, 435 u32 vmdq) 436 { 437 u32 msgbuf[3]; 438 u8 *msg_addr = (u8 *)(&msgbuf[1]); 439 s32 ret_val; 440 441 memset(msgbuf, 0, sizeof(msgbuf)); 442 msgbuf[0] = IXGBE_VF_SET_MAC_ADDR; 443 ether_addr_copy(msg_addr, addr); 444 445 ret_val = ixgbevf_write_msg_read_ack(hw, msgbuf, msgbuf, 446 sizeof(msgbuf) / sizeof(u32)); 447 448 msgbuf[0] &= ~IXGBE_VT_MSGTYPE_CTS; 449 450 /* if nacked the address was rejected, use "perm_addr" */ 451 if (!ret_val && 452 (msgbuf[0] == (IXGBE_VF_SET_MAC_ADDR | IXGBE_VT_MSGTYPE_NACK))) { 453 ixgbevf_get_mac_addr_vf(hw, hw->mac.addr); 454 return IXGBE_ERR_MBX; 455 } 456 457 return ret_val; 458 } 459 460 /** 461 * ixgbevf_hv_set_rar_vf - set device MAC address Hyper-V variant 462 * @hw: pointer to hardware structure 463 * @index: Receive address register to write 464 * @addr: Address to put into receive address register 465 * @vmdq: Unused in this implementation 466 * 467 * We don't really allow setting the device MAC address. However, 468 * if the address being set is the permanent MAC address we will 469 * permit that. 470 **/ 471 static s32 ixgbevf_hv_set_rar_vf(struct ixgbe_hw *hw, u32 index, u8 *addr, 472 u32 vmdq) 473 { 474 if (ether_addr_equal(addr, hw->mac.perm_addr)) 475 return 0; 476 477 return -EOPNOTSUPP; 478 } 479 480 /** 481 * ixgbevf_update_mc_addr_list_vf - Update Multicast addresses 482 * @hw: pointer to the HW structure 483 * @netdev: pointer to net device structure 484 * 485 * Updates the Multicast Table Array. 486 **/ 487 static s32 ixgbevf_update_mc_addr_list_vf(struct ixgbe_hw *hw, 488 struct net_device *netdev) 489 { 490 struct netdev_hw_addr *ha; 491 u32 msgbuf[IXGBE_VFMAILBOX_SIZE]; 492 u16 *vector_list = (u16 *)&msgbuf[1]; 493 u32 cnt, i; 494 495 /* Each entry in the list uses 1 16 bit word. We have 30 496 * 16 bit words available in our HW msg buffer (minus 1 for the 497 * msg type). That's 30 hash values if we pack 'em right. If 498 * there are more than 30 MC addresses to add then punt the 499 * extras for now and then add code to handle more than 30 later. 500 * It would be unusual for a server to request that many multi-cast 501 * addresses except for in large enterprise network environments. 502 */ 503 504 cnt = netdev_mc_count(netdev); 505 if (cnt > 30) 506 cnt = 30; 507 msgbuf[0] = IXGBE_VF_SET_MULTICAST; 508 msgbuf[0] |= cnt << IXGBE_VT_MSGINFO_SHIFT; 509 510 i = 0; 511 netdev_for_each_mc_addr(ha, netdev) { 512 if (i == cnt) 513 break; 514 if (is_link_local_ether_addr(ha->addr)) 515 continue; 516 517 vector_list[i++] = ixgbevf_mta_vector(hw, ha->addr); 518 } 519 520 ixgbevf_write_msg_read_ack(hw, msgbuf, msgbuf, IXGBE_VFMAILBOX_SIZE); 521 522 return 0; 523 } 524 525 /** 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 break; 549 default: 550 return -EOPNOTSUPP; 551 } 552 553 msgbuf[0] = IXGBE_VF_UPDATE_XCAST_MODE; 554 msgbuf[1] = xcast_mode; 555 556 err = ixgbevf_write_msg_read_ack(hw, msgbuf, msgbuf, 557 sizeof(msgbuf) / sizeof(u32)); 558 if (err) 559 return err; 560 561 msgbuf[0] &= ~IXGBE_VT_MSGTYPE_CTS; 562 if (msgbuf[0] == (IXGBE_VF_UPDATE_XCAST_MODE | IXGBE_VT_MSGTYPE_NACK)) 563 return -EPERM; 564 565 return 0; 566 } 567 568 /** 569 * Hyper-V variant - just a stub. 570 */ 571 static s32 ixgbevf_hv_update_xcast_mode(struct ixgbe_hw *hw, int xcast_mode) 572 { 573 return -EOPNOTSUPP; 574 } 575 576 /** 577 * ixgbevf_set_vfta_vf - Set/Unset VLAN filter table address 578 * @hw: pointer to the HW structure 579 * @vlan: 12 bit VLAN ID 580 * @vind: unused by VF drivers 581 * @vlan_on: if true then set bit, else clear bit 582 **/ 583 static s32 ixgbevf_set_vfta_vf(struct ixgbe_hw *hw, u32 vlan, u32 vind, 584 bool vlan_on) 585 { 586 u32 msgbuf[2]; 587 s32 err; 588 589 msgbuf[0] = IXGBE_VF_SET_VLAN; 590 msgbuf[1] = vlan; 591 /* Setting the 8 bit field MSG INFO to TRUE indicates "add" */ 592 msgbuf[0] |= vlan_on << IXGBE_VT_MSGINFO_SHIFT; 593 594 err = ixgbevf_write_msg_read_ack(hw, msgbuf, msgbuf, 595 sizeof(msgbuf) / sizeof(u32)); 596 if (err) 597 goto mbx_err; 598 599 /* remove extra bits from the message */ 600 msgbuf[0] &= ~IXGBE_VT_MSGTYPE_CTS; 601 msgbuf[0] &= ~(0xFF << IXGBE_VT_MSGINFO_SHIFT); 602 603 if (msgbuf[0] != (IXGBE_VF_SET_VLAN | IXGBE_VT_MSGTYPE_ACK)) 604 err = IXGBE_ERR_INVALID_ARGUMENT; 605 606 mbx_err: 607 return err; 608 } 609 610 /** 611 * Hyper-V variant - just a stub. 612 */ 613 static s32 ixgbevf_hv_set_vfta_vf(struct ixgbe_hw *hw, u32 vlan, u32 vind, 614 bool vlan_on) 615 { 616 return -EOPNOTSUPP; 617 } 618 619 /** 620 * ixgbevf_setup_mac_link_vf - Setup MAC link settings 621 * @hw: pointer to hardware structure 622 * @speed: Unused in this implementation 623 * @autoneg: Unused in this implementation 624 * @autoneg_wait_to_complete: Unused in this implementation 625 * 626 * Do nothing and return success. VF drivers are not allowed to change 627 * global settings. Maintained for driver compatibility. 628 **/ 629 static s32 ixgbevf_setup_mac_link_vf(struct ixgbe_hw *hw, 630 ixgbe_link_speed speed, bool autoneg, 631 bool autoneg_wait_to_complete) 632 { 633 return 0; 634 } 635 636 /** 637 * ixgbevf_check_mac_link_vf - Get link/speed status 638 * @hw: pointer to hardware structure 639 * @speed: pointer to link speed 640 * @link_up: true is link is up, false otherwise 641 * @autoneg_wait_to_complete: true when waiting for completion is needed 642 * 643 * Reads the links register to determine if link is up and the current speed 644 **/ 645 static s32 ixgbevf_check_mac_link_vf(struct ixgbe_hw *hw, 646 ixgbe_link_speed *speed, 647 bool *link_up, 648 bool autoneg_wait_to_complete) 649 { 650 struct ixgbe_mbx_info *mbx = &hw->mbx; 651 struct ixgbe_mac_info *mac = &hw->mac; 652 s32 ret_val = 0; 653 u32 links_reg; 654 u32 in_msg = 0; 655 656 /* If we were hit with a reset drop the link */ 657 if (!mbx->ops.check_for_rst(hw) || !mbx->timeout) 658 mac->get_link_status = true; 659 660 if (!mac->get_link_status) 661 goto out; 662 663 /* if link status is down no point in checking to see if pf is up */ 664 links_reg = IXGBE_READ_REG(hw, IXGBE_VFLINKS); 665 if (!(links_reg & IXGBE_LINKS_UP)) 666 goto out; 667 668 /* for SFP+ modules and DA cables on 82599 it can take up to 500usecs 669 * before the link status is correct 670 */ 671 if (mac->type == ixgbe_mac_82599_vf) { 672 int i; 673 674 for (i = 0; i < 5; i++) { 675 udelay(100); 676 links_reg = IXGBE_READ_REG(hw, IXGBE_VFLINKS); 677 678 if (!(links_reg & IXGBE_LINKS_UP)) 679 goto out; 680 } 681 } 682 683 switch (links_reg & IXGBE_LINKS_SPEED_82599) { 684 case IXGBE_LINKS_SPEED_10G_82599: 685 *speed = IXGBE_LINK_SPEED_10GB_FULL; 686 break; 687 case IXGBE_LINKS_SPEED_1G_82599: 688 *speed = IXGBE_LINK_SPEED_1GB_FULL; 689 break; 690 case IXGBE_LINKS_SPEED_100_82599: 691 *speed = IXGBE_LINK_SPEED_100_FULL; 692 break; 693 } 694 695 /* if the read failed it could just be a mailbox collision, best wait 696 * until we are called again and don't report an error 697 */ 698 if (mbx->ops.read(hw, &in_msg, 1)) 699 goto out; 700 701 if (!(in_msg & IXGBE_VT_MSGTYPE_CTS)) { 702 /* msg is not CTS and is NACK we must have lost CTS status */ 703 if (in_msg & IXGBE_VT_MSGTYPE_NACK) 704 ret_val = -1; 705 goto out; 706 } 707 708 /* the pf is talking, if we timed out in the past we reinit */ 709 if (!mbx->timeout) { 710 ret_val = -1; 711 goto out; 712 } 713 714 /* if we passed all the tests above then the link is up and we no 715 * longer need to check for link 716 */ 717 mac->get_link_status = false; 718 719 out: 720 *link_up = !mac->get_link_status; 721 return ret_val; 722 } 723 724 /** 725 * Hyper-V variant; there is no mailbox communication. 726 */ 727 static s32 ixgbevf_hv_check_mac_link_vf(struct ixgbe_hw *hw, 728 ixgbe_link_speed *speed, 729 bool *link_up, 730 bool autoneg_wait_to_complete) 731 { 732 struct ixgbe_mbx_info *mbx = &hw->mbx; 733 struct ixgbe_mac_info *mac = &hw->mac; 734 u32 links_reg; 735 736 /* If we were hit with a reset drop the link */ 737 if (!mbx->ops.check_for_rst(hw) || !mbx->timeout) 738 mac->get_link_status = true; 739 740 if (!mac->get_link_status) 741 goto out; 742 743 /* if link status is down no point in checking to see if pf is up */ 744 links_reg = IXGBE_READ_REG(hw, IXGBE_VFLINKS); 745 if (!(links_reg & IXGBE_LINKS_UP)) 746 goto out; 747 748 /* for SFP+ modules and DA cables on 82599 it can take up to 500usecs 749 * before the link status is correct 750 */ 751 if (mac->type == ixgbe_mac_82599_vf) { 752 int i; 753 754 for (i = 0; i < 5; i++) { 755 udelay(100); 756 links_reg = IXGBE_READ_REG(hw, IXGBE_VFLINKS); 757 758 if (!(links_reg & IXGBE_LINKS_UP)) 759 goto out; 760 } 761 } 762 763 switch (links_reg & IXGBE_LINKS_SPEED_82599) { 764 case IXGBE_LINKS_SPEED_10G_82599: 765 *speed = IXGBE_LINK_SPEED_10GB_FULL; 766 break; 767 case IXGBE_LINKS_SPEED_1G_82599: 768 *speed = IXGBE_LINK_SPEED_1GB_FULL; 769 break; 770 case IXGBE_LINKS_SPEED_100_82599: 771 *speed = IXGBE_LINK_SPEED_100_FULL; 772 break; 773 } 774 775 /* if we passed all the tests above then the link is up and we no 776 * longer need to check for link 777 */ 778 mac->get_link_status = false; 779 780 out: 781 *link_up = !mac->get_link_status; 782 return 0; 783 } 784 785 /** 786 * ixgbevf_set_rlpml_vf - Set the maximum receive packet length 787 * @hw: pointer to the HW structure 788 * @max_size: value to assign to max frame size 789 **/ 790 static s32 ixgbevf_set_rlpml_vf(struct ixgbe_hw *hw, u16 max_size) 791 { 792 u32 msgbuf[2]; 793 s32 ret_val; 794 795 msgbuf[0] = IXGBE_VF_SET_LPE; 796 msgbuf[1] = max_size; 797 798 ret_val = ixgbevf_write_msg_read_ack(hw, msgbuf, msgbuf, 799 sizeof(msgbuf) / sizeof(u32)); 800 if (ret_val) 801 return ret_val; 802 if ((msgbuf[0] & IXGBE_VF_SET_LPE) && 803 (msgbuf[0] & IXGBE_VT_MSGTYPE_NACK)) 804 return IXGBE_ERR_MBX; 805 806 return 0; 807 } 808 809 /** 810 * ixgbevf_hv_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 * Hyper-V variant. 814 **/ 815 static s32 ixgbevf_hv_set_rlpml_vf(struct ixgbe_hw *hw, u16 max_size) 816 { 817 u32 reg; 818 819 /* If we are on Hyper-V, we implement this functionality 820 * differently. 821 */ 822 reg = IXGBE_READ_REG(hw, IXGBE_VFRXDCTL(0)); 823 /* CRC == 4 */ 824 reg |= ((max_size + 4) | IXGBE_RXDCTL_RLPML_EN); 825 IXGBE_WRITE_REG(hw, IXGBE_VFRXDCTL(0), reg); 826 827 return 0; 828 } 829 830 /** 831 * ixgbevf_negotiate_api_version_vf - Negotiate supported API version 832 * @hw: pointer to the HW structure 833 * @api: integer containing requested API version 834 **/ 835 static int ixgbevf_negotiate_api_version_vf(struct ixgbe_hw *hw, int api) 836 { 837 int err; 838 u32 msg[3]; 839 840 /* Negotiate the mailbox API version */ 841 msg[0] = IXGBE_VF_API_NEGOTIATE; 842 msg[1] = api; 843 msg[2] = 0; 844 845 err = ixgbevf_write_msg_read_ack(hw, msg, msg, 846 sizeof(msg) / sizeof(u32)); 847 if (!err) { 848 msg[0] &= ~IXGBE_VT_MSGTYPE_CTS; 849 850 /* Store value and return 0 on success */ 851 if (msg[0] == (IXGBE_VF_API_NEGOTIATE | IXGBE_VT_MSGTYPE_ACK)) { 852 hw->api_version = api; 853 return 0; 854 } 855 856 err = IXGBE_ERR_INVALID_ARGUMENT; 857 } 858 859 return err; 860 } 861 862 /** 863 * ixgbevf_hv_negotiate_api_version_vf - Negotiate supported API version 864 * @hw: pointer to the HW structure 865 * @api: integer containing requested API version 866 * Hyper-V version - only ixgbe_mbox_api_10 supported. 867 **/ 868 static int ixgbevf_hv_negotiate_api_version_vf(struct ixgbe_hw *hw, int api) 869 { 870 /* Hyper-V only supports api version ixgbe_mbox_api_10 */ 871 if (api != ixgbe_mbox_api_10) 872 return IXGBE_ERR_INVALID_ARGUMENT; 873 874 return 0; 875 } 876 877 int ixgbevf_get_queues(struct ixgbe_hw *hw, unsigned int *num_tcs, 878 unsigned int *default_tc) 879 { 880 int err; 881 u32 msg[5]; 882 883 /* do nothing if API doesn't support ixgbevf_get_queues */ 884 switch (hw->api_version) { 885 case ixgbe_mbox_api_11: 886 case ixgbe_mbox_api_12: 887 break; 888 default: 889 return 0; 890 } 891 892 /* Fetch queue configuration from the PF */ 893 msg[0] = IXGBE_VF_GET_QUEUE; 894 msg[1] = msg[2] = msg[3] = msg[4] = 0; 895 896 err = ixgbevf_write_msg_read_ack(hw, msg, msg, 897 sizeof(msg) / sizeof(u32)); 898 if (!err) { 899 msg[0] &= ~IXGBE_VT_MSGTYPE_CTS; 900 901 /* if we we didn't get an ACK there must have been 902 * some sort of mailbox error so we should treat it 903 * as such 904 */ 905 if (msg[0] != (IXGBE_VF_GET_QUEUE | IXGBE_VT_MSGTYPE_ACK)) 906 return IXGBE_ERR_MBX; 907 908 /* record and validate values from message */ 909 hw->mac.max_tx_queues = msg[IXGBE_VF_TX_QUEUES]; 910 if (hw->mac.max_tx_queues == 0 || 911 hw->mac.max_tx_queues > IXGBE_VF_MAX_TX_QUEUES) 912 hw->mac.max_tx_queues = IXGBE_VF_MAX_TX_QUEUES; 913 914 hw->mac.max_rx_queues = msg[IXGBE_VF_RX_QUEUES]; 915 if (hw->mac.max_rx_queues == 0 || 916 hw->mac.max_rx_queues > IXGBE_VF_MAX_RX_QUEUES) 917 hw->mac.max_rx_queues = IXGBE_VF_MAX_RX_QUEUES; 918 919 *num_tcs = msg[IXGBE_VF_TRANS_VLAN]; 920 /* in case of unknown state assume we cannot tag frames */ 921 if (*num_tcs > hw->mac.max_rx_queues) 922 *num_tcs = 1; 923 924 *default_tc = msg[IXGBE_VF_DEF_QUEUE]; 925 /* default to queue 0 on out-of-bounds queue number */ 926 if (*default_tc >= hw->mac.max_tx_queues) 927 *default_tc = 0; 928 } 929 930 return err; 931 } 932 933 static const struct ixgbe_mac_operations ixgbevf_mac_ops = { 934 .init_hw = ixgbevf_init_hw_vf, 935 .reset_hw = ixgbevf_reset_hw_vf, 936 .start_hw = ixgbevf_start_hw_vf, 937 .get_mac_addr = ixgbevf_get_mac_addr_vf, 938 .stop_adapter = ixgbevf_stop_hw_vf, 939 .setup_link = ixgbevf_setup_mac_link_vf, 940 .check_link = ixgbevf_check_mac_link_vf, 941 .negotiate_api_version = ixgbevf_negotiate_api_version_vf, 942 .set_rar = ixgbevf_set_rar_vf, 943 .update_mc_addr_list = ixgbevf_update_mc_addr_list_vf, 944 .update_xcast_mode = ixgbevf_update_xcast_mode, 945 .set_uc_addr = ixgbevf_set_uc_addr_vf, 946 .set_vfta = ixgbevf_set_vfta_vf, 947 .set_rlpml = ixgbevf_set_rlpml_vf, 948 }; 949 950 static const struct ixgbe_mac_operations ixgbevf_hv_mac_ops = { 951 .init_hw = ixgbevf_init_hw_vf, 952 .reset_hw = ixgbevf_hv_reset_hw_vf, 953 .start_hw = ixgbevf_start_hw_vf, 954 .get_mac_addr = ixgbevf_get_mac_addr_vf, 955 .stop_adapter = ixgbevf_stop_hw_vf, 956 .setup_link = ixgbevf_setup_mac_link_vf, 957 .check_link = ixgbevf_hv_check_mac_link_vf, 958 .negotiate_api_version = ixgbevf_hv_negotiate_api_version_vf, 959 .set_rar = ixgbevf_hv_set_rar_vf, 960 .update_mc_addr_list = ixgbevf_hv_update_mc_addr_list_vf, 961 .update_xcast_mode = ixgbevf_hv_update_xcast_mode, 962 .set_uc_addr = ixgbevf_hv_set_uc_addr_vf, 963 .set_vfta = ixgbevf_hv_set_vfta_vf, 964 .set_rlpml = ixgbevf_hv_set_rlpml_vf, 965 }; 966 967 const struct ixgbevf_info ixgbevf_82599_vf_info = { 968 .mac = ixgbe_mac_82599_vf, 969 .mac_ops = &ixgbevf_mac_ops, 970 }; 971 972 const struct ixgbevf_info ixgbevf_82599_vf_hv_info = { 973 .mac = ixgbe_mac_82599_vf, 974 .mac_ops = &ixgbevf_hv_mac_ops, 975 }; 976 977 const struct ixgbevf_info ixgbevf_X540_vf_info = { 978 .mac = ixgbe_mac_X540_vf, 979 .mac_ops = &ixgbevf_mac_ops, 980 }; 981 982 const struct ixgbevf_info ixgbevf_X540_vf_hv_info = { 983 .mac = ixgbe_mac_X540_vf, 984 .mac_ops = &ixgbevf_hv_mac_ops, 985 }; 986 987 const struct ixgbevf_info ixgbevf_X550_vf_info = { 988 .mac = ixgbe_mac_X550_vf, 989 .mac_ops = &ixgbevf_mac_ops, 990 }; 991 992 const struct ixgbevf_info ixgbevf_X550_vf_hv_info = { 993 .mac = ixgbe_mac_X550_vf, 994 .mac_ops = &ixgbevf_hv_mac_ops, 995 }; 996 997 const struct ixgbevf_info ixgbevf_X550EM_x_vf_info = { 998 .mac = ixgbe_mac_X550EM_x_vf, 999 .mac_ops = &ixgbevf_mac_ops, 1000 }; 1001 1002 const struct ixgbevf_info ixgbevf_X550EM_x_vf_hv_info = { 1003 .mac = ixgbe_mac_X550EM_x_vf, 1004 .mac_ops = &ixgbevf_hv_mac_ops, 1005 }; 1006 1007 const struct ixgbevf_info ixgbevf_x550em_a_vf_info = { 1008 .mac = ixgbe_mac_x550em_a_vf, 1009 .mac_ops = &ixgbevf_mac_ops, 1010 }; 1011