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/** 31 * ixgbevf_start_hw_vf - Prepare hardware for Tx/Rx 32 * @hw: pointer to hardware structure 33 * 34 * Starts the hardware by filling the bus info structure and media type, clears 35 * all on chip counters, initializes receive address registers, multicast 36 * table, VLAN filter table, calls routine to set up link and flow control 37 * settings, and leaves transmit and receive units disabled and uninitialized 38 **/ 39static s32 ixgbevf_start_hw_vf(struct ixgbe_hw *hw) 40{ 41 /* Clear adapter stopped flag */ 42 hw->adapter_stopped = false; 43 44 return 0; 45} 46 47/** 48 * ixgbevf_init_hw_vf - virtual function hardware initialization 49 * @hw: pointer to hardware structure 50 * 51 * Initialize the hardware by resetting the hardware and then starting 52 * the hardware 53 **/ 54static s32 ixgbevf_init_hw_vf(struct ixgbe_hw *hw) 55{ 56 s32 status = hw->mac.ops.start_hw(hw); 57 58 hw->mac.ops.get_mac_addr(hw, hw->mac.addr); 59 60 return status; 61} 62 63/** 64 * ixgbevf_reset_hw_vf - Performs hardware reset 65 * @hw: pointer to hardware structure 66 * 67 * Resets the hardware by resetting the transmit and receive units, masks and 68 * clears all interrupts. 69 **/ 70static s32 ixgbevf_reset_hw_vf(struct ixgbe_hw *hw) 71{ 72 struct ixgbe_mbx_info *mbx = &hw->mbx; 73 u32 timeout = IXGBE_VF_INIT_TIMEOUT; 74 s32 ret_val = IXGBE_ERR_INVALID_MAC_ADDR; 75 u32 msgbuf[IXGBE_VF_PERMADDR_MSG_LEN]; 76 u8 *addr = (u8 *)(&msgbuf[1]); 77 78 /* Call adapter stop to disable tx/rx and clear interrupts */ 79 hw->mac.ops.stop_adapter(hw); 80 81 /* reset the api version */ 82 hw->api_version = ixgbe_mbox_api_10; 83 84 IXGBE_WRITE_REG(hw, IXGBE_VFCTRL, IXGBE_CTRL_RST); 85 IXGBE_WRITE_FLUSH(hw); 86 87 /* we cannot reset while the RSTI / RSTD bits are asserted */ 88 while (!mbx->ops.check_for_rst(hw) && timeout) { 89 timeout--; 90 udelay(5); 91 } 92 93 if (!timeout) 94 return IXGBE_ERR_RESET_FAILED; 95 96 /* mailbox timeout can now become active */ 97 mbx->timeout = IXGBE_VF_MBX_INIT_TIMEOUT; 98 99 msgbuf[0] = IXGBE_VF_RESET; 100 mbx->ops.write_posted(hw, msgbuf, 1); 101 102 mdelay(10); 103 104 /* set our "perm_addr" based on info provided by PF 105 * also set up the mc_filter_type which is piggy backed 106 * on the mac address in word 3 107 */ 108 ret_val = mbx->ops.read_posted(hw, msgbuf, IXGBE_VF_PERMADDR_MSG_LEN); 109 if (ret_val) 110 return ret_val; 111 112 /* New versions of the PF may NACK the reset return message 113 * to indicate that no MAC address has yet been assigned for 114 * the VF. 115 */ 116 if (msgbuf[0] != (IXGBE_VF_RESET | IXGBE_VT_MSGTYPE_ACK) && 117 msgbuf[0] != (IXGBE_VF_RESET | IXGBE_VT_MSGTYPE_NACK)) 118 return IXGBE_ERR_INVALID_MAC_ADDR; 119 120 ether_addr_copy(hw->mac.perm_addr, addr); 121 hw->mac.mc_filter_type = msgbuf[IXGBE_VF_MC_TYPE_WORD]; 122 123 return 0; 124} 125 126/** 127 * ixgbevf_stop_hw_vf - Generic stop Tx/Rx units 128 * @hw: pointer to hardware structure 129 * 130 * Sets the adapter_stopped flag within ixgbe_hw struct. Clears interrupts, 131 * disables transmit and receive units. The adapter_stopped flag is used by 132 * the shared code and drivers to determine if the adapter is in a stopped 133 * state and should not touch the hardware. 134 **/ 135static s32 ixgbevf_stop_hw_vf(struct ixgbe_hw *hw) 136{ 137 u32 number_of_queues; 138 u32 reg_val; 139 u16 i; 140 141 /* Set the adapter_stopped flag so other driver functions stop touching 142 * the hardware 143 */ 144 hw->adapter_stopped = true; 145 146 /* Disable the receive unit by stopped each queue */ 147 number_of_queues = hw->mac.max_rx_queues; 148 for (i = 0; i < number_of_queues; i++) { 149 reg_val = IXGBE_READ_REG(hw, IXGBE_VFRXDCTL(i)); 150 if (reg_val & IXGBE_RXDCTL_ENABLE) { 151 reg_val &= ~IXGBE_RXDCTL_ENABLE; 152 IXGBE_WRITE_REG(hw, IXGBE_VFRXDCTL(i), reg_val); 153 } 154 } 155 156 IXGBE_WRITE_FLUSH(hw); 157 158 /* Clear interrupt mask to stop from interrupts being generated */ 159 IXGBE_WRITE_REG(hw, IXGBE_VTEIMC, IXGBE_VF_IRQ_CLEAR_MASK); 160 161 /* Clear any pending interrupts */ 162 IXGBE_READ_REG(hw, IXGBE_VTEICR); 163 164 /* Disable the transmit unit. Each queue must be disabled. */ 165 number_of_queues = hw->mac.max_tx_queues; 166 for (i = 0; i < number_of_queues; i++) { 167 reg_val = IXGBE_READ_REG(hw, IXGBE_VFTXDCTL(i)); 168 if (reg_val & IXGBE_TXDCTL_ENABLE) { 169 reg_val &= ~IXGBE_TXDCTL_ENABLE; 170 IXGBE_WRITE_REG(hw, IXGBE_VFTXDCTL(i), reg_val); 171 } 172 } 173 174 return 0; 175} 176 177/** 178 * ixgbevf_mta_vector - Determines bit-vector in multicast table to set 179 * @hw: pointer to hardware structure 180 * @mc_addr: the multicast address 181 * 182 * Extracts the 12 bits, from a multicast address, to determine which 183 * bit-vector to set in the multicast table. The hardware uses 12 bits, from 184 * incoming Rx multicast addresses, to determine the bit-vector to check in 185 * the MTA. Which of the 4 combination, of 12-bits, the hardware uses is set 186 * by the MO field of the MCSTCTRL. The MO field is set during initialization 187 * to mc_filter_type. 188 **/ 189static s32 ixgbevf_mta_vector(struct ixgbe_hw *hw, u8 *mc_addr) 190{ 191 u32 vector = 0; 192 193 switch (hw->mac.mc_filter_type) { 194 case 0: /* use bits [47:36] of the address */ 195 vector = ((mc_addr[4] >> 4) | (((u16)mc_addr[5]) << 4)); 196 break; 197 case 1: /* use bits [46:35] of the address */ 198 vector = ((mc_addr[4] >> 3) | (((u16)mc_addr[5]) << 5)); 199 break; 200 case 2: /* use bits [45:34] of the address */ 201 vector = ((mc_addr[4] >> 2) | (((u16)mc_addr[5]) << 6)); 202 break; 203 case 3: /* use bits [43:32] of the address */ 204 vector = ((mc_addr[4]) | (((u16)mc_addr[5]) << 8)); 205 break; 206 default: /* Invalid mc_filter_type */ 207 break; 208 } 209 210 /* vector can only be 12-bits or boundary will be exceeded */ 211 vector &= 0xFFF; 212 return vector; 213} 214 215/** 216 * ixgbevf_get_mac_addr_vf - Read device MAC address 217 * @hw: pointer to the HW structure 218 * @mac_addr: pointer to storage for retrieved MAC address 219 **/ 220static s32 ixgbevf_get_mac_addr_vf(struct ixgbe_hw *hw, u8 *mac_addr) 221{ 222 ether_addr_copy(mac_addr, hw->mac.perm_addr); 223 224 return 0; 225} 226 227static s32 ixgbevf_set_uc_addr_vf(struct ixgbe_hw *hw, u32 index, u8 *addr) 228{ 229 struct ixgbe_mbx_info *mbx = &hw->mbx; 230 u32 msgbuf[3]; 231 u8 *msg_addr = (u8 *)(&msgbuf[1]); 232 s32 ret_val; 233 234 memset(msgbuf, 0, sizeof(msgbuf)); 235 /* If index is one then this is the start of a new list and needs 236 * indication to the PF so it can do it's own list management. 237 * If it is zero then that tells the PF to just clear all of 238 * this VF's macvlans and there is no new list. 239 */ 240 msgbuf[0] |= index << IXGBE_VT_MSGINFO_SHIFT; 241 msgbuf[0] |= IXGBE_VF_SET_MACVLAN; 242 if (addr) 243 ether_addr_copy(msg_addr, addr); 244 ret_val = mbx->ops.write_posted(hw, msgbuf, 3); 245 246 if (!ret_val) 247 ret_val = mbx->ops.read_posted(hw, msgbuf, 3); 248 249 msgbuf[0] &= ~IXGBE_VT_MSGTYPE_CTS; 250 251 if (!ret_val) 252 if (msgbuf[0] == 253 (IXGBE_VF_SET_MACVLAN | IXGBE_VT_MSGTYPE_NACK)) 254 ret_val = -ENOMEM; 255 256 return ret_val; 257} 258 259/** 260 * ixgbevf_get_reta_locked - get the RSS redirection table (RETA) contents. 261 * @adapter: pointer to the port handle 262 * @reta: buffer to fill with RETA contents. 263 * @num_rx_queues: Number of Rx queues configured for this port 264 * 265 * The "reta" buffer should be big enough to contain 32 registers. 266 * 267 * Returns: 0 on success. 268 * if API doesn't support this operation - (-EOPNOTSUPP). 269 */ 270int ixgbevf_get_reta_locked(struct ixgbe_hw *hw, u32 *reta, int num_rx_queues) 271{ 272 int err, i, j; 273 u32 msgbuf[IXGBE_VFMAILBOX_SIZE]; 274 u32 *hw_reta = &msgbuf[1]; 275 u32 mask = 0; 276 277 /* We have to use a mailbox for 82599 and x540 devices only. 278 * For these devices RETA has 128 entries. 279 * Also these VFs support up to 4 RSS queues. Therefore PF will compress 280 * 16 RETA entries in each DWORD giving 2 bits to each entry. 281 */ 282 int dwords = IXGBEVF_82599_RETA_SIZE / 16; 283 284 /* We support the RSS querying for 82599 and x540 devices only. 285 * Thus return an error if API doesn't support RETA querying or querying 286 * is not supported for this device type. 287 */ 288 if (hw->api_version != ixgbe_mbox_api_12 || 289 hw->mac.type >= ixgbe_mac_X550_vf) 290 return -EOPNOTSUPP; 291 292 msgbuf[0] = IXGBE_VF_GET_RETA; 293 294 err = hw->mbx.ops.write_posted(hw, msgbuf, 1); 295 296 if (err) 297 return err; 298 299 err = hw->mbx.ops.read_posted(hw, msgbuf, dwords + 1); 300 301 if (err) 302 return err; 303 304 msgbuf[0] &= ~IXGBE_VT_MSGTYPE_CTS; 305 306 /* If the operation has been refused by a PF return -EPERM */ 307 if (msgbuf[0] == (IXGBE_VF_GET_RETA | IXGBE_VT_MSGTYPE_NACK)) 308 return -EPERM; 309 310 /* If we didn't get an ACK there must have been 311 * some sort of mailbox error so we should treat it 312 * as such. 313 */ 314 if (msgbuf[0] != (IXGBE_VF_GET_RETA | IXGBE_VT_MSGTYPE_ACK)) 315 return IXGBE_ERR_MBX; 316 317 /* ixgbevf doesn't support more than 2 queues at the moment */ 318 if (num_rx_queues > 1) 319 mask = 0x1; 320 321 for (i = 0; i < dwords; i++) 322 for (j = 0; j < 16; j++) 323 reta[i * 16 + j] = (hw_reta[i] >> (2 * j)) & mask; 324 325 return 0; 326} 327 328/** 329 * ixgbevf_get_rss_key_locked - get the RSS Random Key 330 * @hw: pointer to the HW structure 331 * @rss_key: buffer to fill with RSS Hash Key contents. 332 * 333 * The "rss_key" buffer should be big enough to contain 10 registers. 334 * 335 * Returns: 0 on success. 336 * if API doesn't support this operation - (-EOPNOTSUPP). 337 */ 338int ixgbevf_get_rss_key_locked(struct ixgbe_hw *hw, u8 *rss_key) 339{ 340 int err; 341 u32 msgbuf[IXGBE_VFMAILBOX_SIZE]; 342 343 /* We currently support the RSS Random Key retrieval for 82599 and x540 344 * devices only. 345 * 346 * Thus return an error if API doesn't support RSS Random Key retrieval 347 * or if the operation is not supported for this device type. 348 */ 349 if (hw->api_version != ixgbe_mbox_api_12 || 350 hw->mac.type >= ixgbe_mac_X550_vf) 351 return -EOPNOTSUPP; 352 353 msgbuf[0] = IXGBE_VF_GET_RSS_KEY; 354 err = hw->mbx.ops.write_posted(hw, msgbuf, 1); 355 356 if (err) 357 return err; 358 359 err = hw->mbx.ops.read_posted(hw, msgbuf, 11); 360 361 if (err) 362 return err; 363 364 msgbuf[0] &= ~IXGBE_VT_MSGTYPE_CTS; 365 366 /* If the operation has been refused by a PF return -EPERM */ 367 if (msgbuf[0] == (IXGBE_VF_GET_RETA | IXGBE_VT_MSGTYPE_NACK)) 368 return -EPERM; 369 370 /* If we didn't get an ACK there must have been 371 * some sort of mailbox error so we should treat it 372 * as such. 373 */ 374 if (msgbuf[0] != (IXGBE_VF_GET_RSS_KEY | IXGBE_VT_MSGTYPE_ACK)) 375 return IXGBE_ERR_MBX; 376 377 memcpy(rss_key, msgbuf + 1, IXGBEVF_RSS_HASH_KEY_SIZE); 378 379 return 0; 380} 381 382/** 383 * ixgbevf_set_rar_vf - set device MAC address 384 * @hw: pointer to hardware structure 385 * @index: Receive address register to write 386 * @addr: Address to put into receive address register 387 * @vmdq: Unused in this implementation 388 **/ 389static s32 ixgbevf_set_rar_vf(struct ixgbe_hw *hw, u32 index, u8 *addr, 390 u32 vmdq) 391{ 392 struct ixgbe_mbx_info *mbx = &hw->mbx; 393 u32 msgbuf[3]; 394 u8 *msg_addr = (u8 *)(&msgbuf[1]); 395 s32 ret_val; 396 397 memset(msgbuf, 0, sizeof(msgbuf)); 398 msgbuf[0] = IXGBE_VF_SET_MAC_ADDR; 399 ether_addr_copy(msg_addr, addr); 400 ret_val = mbx->ops.write_posted(hw, msgbuf, 3); 401 402 if (!ret_val) 403 ret_val = mbx->ops.read_posted(hw, msgbuf, 3); 404 405 msgbuf[0] &= ~IXGBE_VT_MSGTYPE_CTS; 406 407 /* if nacked the address was rejected, use "perm_addr" */ 408 if (!ret_val && 409 (msgbuf[0] == (IXGBE_VF_SET_MAC_ADDR | IXGBE_VT_MSGTYPE_NACK))) 410 ixgbevf_get_mac_addr_vf(hw, hw->mac.addr); 411 412 return ret_val; 413} 414 415static void ixgbevf_write_msg_read_ack(struct ixgbe_hw *hw, 416 u32 *msg, u16 size) 417{ 418 struct ixgbe_mbx_info *mbx = &hw->mbx; 419 u32 retmsg[IXGBE_VFMAILBOX_SIZE]; 420 s32 retval = mbx->ops.write_posted(hw, msg, size); 421 422 if (!retval) 423 mbx->ops.read_posted(hw, retmsg, size); 424} 425 426/** 427 * ixgbevf_update_mc_addr_list_vf - Update Multicast addresses 428 * @hw: pointer to the HW structure 429 * @netdev: pointer to net device structure 430 * 431 * Updates the Multicast Table Array. 432 **/ 433static s32 ixgbevf_update_mc_addr_list_vf(struct ixgbe_hw *hw, 434 struct net_device *netdev) 435{ 436 struct netdev_hw_addr *ha; 437 u32 msgbuf[IXGBE_VFMAILBOX_SIZE]; 438 u16 *vector_list = (u16 *)&msgbuf[1]; 439 u32 cnt, i; 440 441 /* Each entry in the list uses 1 16 bit word. We have 30 442 * 16 bit words available in our HW msg buffer (minus 1 for the 443 * msg type). That's 30 hash values if we pack 'em right. If 444 * there are more than 30 MC addresses to add then punt the 445 * extras for now and then add code to handle more than 30 later. 446 * It would be unusual for a server to request that many multi-cast 447 * addresses except for in large enterprise network environments. 448 */ 449 450 cnt = netdev_mc_count(netdev); 451 if (cnt > 30) 452 cnt = 30; 453 msgbuf[0] = IXGBE_VF_SET_MULTICAST; 454 msgbuf[0] |= cnt << IXGBE_VT_MSGINFO_SHIFT; 455 456 i = 0; 457 netdev_for_each_mc_addr(ha, netdev) { 458 if (i == cnt) 459 break; 460 if (is_link_local_ether_addr(ha->addr)) 461 continue; 462 463 vector_list[i++] = ixgbevf_mta_vector(hw, ha->addr); 464 } 465 466 ixgbevf_write_msg_read_ack(hw, msgbuf, IXGBE_VFMAILBOX_SIZE); 467 468 return 0; 469} 470 471/** 472 * ixgbevf_set_vfta_vf - Set/Unset VLAN filter table address 473 * @hw: pointer to the HW structure 474 * @vlan: 12 bit VLAN ID 475 * @vind: unused by VF drivers 476 * @vlan_on: if true then set bit, else clear bit 477 **/ 478static s32 ixgbevf_set_vfta_vf(struct ixgbe_hw *hw, u32 vlan, u32 vind, 479 bool vlan_on) 480{ 481 struct ixgbe_mbx_info *mbx = &hw->mbx; 482 u32 msgbuf[2]; 483 s32 err; 484 485 msgbuf[0] = IXGBE_VF_SET_VLAN; 486 msgbuf[1] = vlan; 487 /* Setting the 8 bit field MSG INFO to TRUE indicates "add" */ 488 msgbuf[0] |= vlan_on << IXGBE_VT_MSGINFO_SHIFT; 489 490 err = mbx->ops.write_posted(hw, msgbuf, 2); 491 if (err) 492 goto mbx_err; 493 494 err = mbx->ops.read_posted(hw, msgbuf, 2); 495 if (err) 496 goto mbx_err; 497 498 /* remove extra bits from the message */ 499 msgbuf[0] &= ~IXGBE_VT_MSGTYPE_CTS; 500 msgbuf[0] &= ~(0xFF << IXGBE_VT_MSGINFO_SHIFT); 501 502 if (msgbuf[0] != (IXGBE_VF_SET_VLAN | IXGBE_VT_MSGTYPE_ACK)) 503 err = IXGBE_ERR_INVALID_ARGUMENT; 504 505mbx_err: 506 return err; 507} 508 509/** 510 * ixgbevf_setup_mac_link_vf - Setup MAC link settings 511 * @hw: pointer to hardware structure 512 * @speed: Unused in this implementation 513 * @autoneg: Unused in this implementation 514 * @autoneg_wait_to_complete: Unused in this implementation 515 * 516 * Do nothing and return success. VF drivers are not allowed to change 517 * global settings. Maintained for driver compatibility. 518 **/ 519static s32 ixgbevf_setup_mac_link_vf(struct ixgbe_hw *hw, 520 ixgbe_link_speed speed, bool autoneg, 521 bool autoneg_wait_to_complete) 522{ 523 return 0; 524} 525 526/** 527 * ixgbevf_check_mac_link_vf - Get link/speed status 528 * @hw: pointer to hardware structure 529 * @speed: pointer to link speed 530 * @link_up: true is link is up, false otherwise 531 * @autoneg_wait_to_complete: true when waiting for completion is needed 532 * 533 * Reads the links register to determine if link is up and the current speed 534 **/ 535static s32 ixgbevf_check_mac_link_vf(struct ixgbe_hw *hw, 536 ixgbe_link_speed *speed, 537 bool *link_up, 538 bool autoneg_wait_to_complete) 539{ 540 struct ixgbe_mbx_info *mbx = &hw->mbx; 541 struct ixgbe_mac_info *mac = &hw->mac; 542 s32 ret_val = 0; 543 u32 links_reg; 544 u32 in_msg = 0; 545 546 /* If we were hit with a reset drop the link */ 547 if (!mbx->ops.check_for_rst(hw) || !mbx->timeout) 548 mac->get_link_status = true; 549 550 if (!mac->get_link_status) 551 goto out; 552 553 /* if link status is down no point in checking to see if pf is up */ 554 links_reg = IXGBE_READ_REG(hw, IXGBE_VFLINKS); 555 if (!(links_reg & IXGBE_LINKS_UP)) 556 goto out; 557 558 /* for SFP+ modules and DA cables on 82599 it can take up to 500usecs 559 * before the link status is correct 560 */ 561 if (mac->type == ixgbe_mac_82599_vf) { 562 int i; 563 564 for (i = 0; i < 5; i++) { 565 udelay(100); 566 links_reg = IXGBE_READ_REG(hw, IXGBE_VFLINKS); 567 568 if (!(links_reg & IXGBE_LINKS_UP)) 569 goto out; 570 } 571 } 572 573 switch (links_reg & IXGBE_LINKS_SPEED_82599) { 574 case IXGBE_LINKS_SPEED_10G_82599: 575 *speed = IXGBE_LINK_SPEED_10GB_FULL; 576 break; 577 case IXGBE_LINKS_SPEED_1G_82599: 578 *speed = IXGBE_LINK_SPEED_1GB_FULL; 579 break; 580 case IXGBE_LINKS_SPEED_100_82599: 581 *speed = IXGBE_LINK_SPEED_100_FULL; 582 break; 583 } 584 585 /* if the read failed it could just be a mailbox collision, best wait 586 * until we are called again and don't report an error 587 */ 588 if (mbx->ops.read(hw, &in_msg, 1)) 589 goto out; 590 591 if (!(in_msg & IXGBE_VT_MSGTYPE_CTS)) { 592 /* msg is not CTS and is NACK we must have lost CTS status */ 593 if (in_msg & IXGBE_VT_MSGTYPE_NACK) 594 ret_val = -1; 595 goto out; 596 } 597 598 /* the pf is talking, if we timed out in the past we reinit */ 599 if (!mbx->timeout) { 600 ret_val = -1; 601 goto out; 602 } 603 604 /* if we passed all the tests above then the link is up and we no 605 * longer need to check for link 606 */ 607 mac->get_link_status = false; 608 609out: 610 *link_up = !mac->get_link_status; 611 return ret_val; 612} 613 614/** 615 * ixgbevf_rlpml_set_vf - Set the maximum receive packet length 616 * @hw: pointer to the HW structure 617 * @max_size: value to assign to max frame size 618 **/ 619void ixgbevf_rlpml_set_vf(struct ixgbe_hw *hw, u16 max_size) 620{ 621 u32 msgbuf[2]; 622 623 msgbuf[0] = IXGBE_VF_SET_LPE; 624 msgbuf[1] = max_size; 625 ixgbevf_write_msg_read_ack(hw, msgbuf, 2); 626} 627 628/** 629 * ixgbevf_negotiate_api_version - Negotiate supported API version 630 * @hw: pointer to the HW structure 631 * @api: integer containing requested API version 632 **/ 633int ixgbevf_negotiate_api_version(struct ixgbe_hw *hw, int api) 634{ 635 int err; 636 u32 msg[3]; 637 638 /* Negotiate the mailbox API version */ 639 msg[0] = IXGBE_VF_API_NEGOTIATE; 640 msg[1] = api; 641 msg[2] = 0; 642 err = hw->mbx.ops.write_posted(hw, msg, 3); 643 644 if (!err) 645 err = hw->mbx.ops.read_posted(hw, msg, 3); 646 647 if (!err) { 648 msg[0] &= ~IXGBE_VT_MSGTYPE_CTS; 649 650 /* Store value and return 0 on success */ 651 if (msg[0] == (IXGBE_VF_API_NEGOTIATE | IXGBE_VT_MSGTYPE_ACK)) { 652 hw->api_version = api; 653 return 0; 654 } 655 656 err = IXGBE_ERR_INVALID_ARGUMENT; 657 } 658 659 return err; 660} 661 662int ixgbevf_get_queues(struct ixgbe_hw *hw, unsigned int *num_tcs, 663 unsigned int *default_tc) 664{ 665 int err; 666 u32 msg[5]; 667 668 /* do nothing if API doesn't support ixgbevf_get_queues */ 669 switch (hw->api_version) { 670 case ixgbe_mbox_api_11: 671 case ixgbe_mbox_api_12: 672 break; 673 default: 674 return 0; 675 } 676 677 /* Fetch queue configuration from the PF */ 678 msg[0] = IXGBE_VF_GET_QUEUE; 679 msg[1] = msg[2] = msg[3] = msg[4] = 0; 680 err = hw->mbx.ops.write_posted(hw, msg, 5); 681 682 if (!err) 683 err = hw->mbx.ops.read_posted(hw, msg, 5); 684 685 if (!err) { 686 msg[0] &= ~IXGBE_VT_MSGTYPE_CTS; 687 688 /* if we we didn't get an ACK there must have been 689 * some sort of mailbox error so we should treat it 690 * as such 691 */ 692 if (msg[0] != (IXGBE_VF_GET_QUEUE | IXGBE_VT_MSGTYPE_ACK)) 693 return IXGBE_ERR_MBX; 694 695 /* record and validate values from message */ 696 hw->mac.max_tx_queues = msg[IXGBE_VF_TX_QUEUES]; 697 if (hw->mac.max_tx_queues == 0 || 698 hw->mac.max_tx_queues > IXGBE_VF_MAX_TX_QUEUES) 699 hw->mac.max_tx_queues = IXGBE_VF_MAX_TX_QUEUES; 700 701 hw->mac.max_rx_queues = msg[IXGBE_VF_RX_QUEUES]; 702 if (hw->mac.max_rx_queues == 0 || 703 hw->mac.max_rx_queues > IXGBE_VF_MAX_RX_QUEUES) 704 hw->mac.max_rx_queues = IXGBE_VF_MAX_RX_QUEUES; 705 706 *num_tcs = msg[IXGBE_VF_TRANS_VLAN]; 707 /* in case of unknown state assume we cannot tag frames */ 708 if (*num_tcs > hw->mac.max_rx_queues) 709 *num_tcs = 1; 710 711 *default_tc = msg[IXGBE_VF_DEF_QUEUE]; 712 /* default to queue 0 on out-of-bounds queue number */ 713 if (*default_tc >= hw->mac.max_tx_queues) 714 *default_tc = 0; 715 } 716 717 return err; 718} 719 720static const struct ixgbe_mac_operations ixgbevf_mac_ops = { 721 .init_hw = ixgbevf_init_hw_vf, 722 .reset_hw = ixgbevf_reset_hw_vf, 723 .start_hw = ixgbevf_start_hw_vf, 724 .get_mac_addr = ixgbevf_get_mac_addr_vf, 725 .stop_adapter = ixgbevf_stop_hw_vf, 726 .setup_link = ixgbevf_setup_mac_link_vf, 727 .check_link = ixgbevf_check_mac_link_vf, 728 .set_rar = ixgbevf_set_rar_vf, 729 .update_mc_addr_list = ixgbevf_update_mc_addr_list_vf, 730 .set_uc_addr = ixgbevf_set_uc_addr_vf, 731 .set_vfta = ixgbevf_set_vfta_vf, 732}; 733 734const struct ixgbevf_info ixgbevf_82599_vf_info = { 735 .mac = ixgbe_mac_82599_vf, 736 .mac_ops = &ixgbevf_mac_ops, 737}; 738 739const struct ixgbevf_info ixgbevf_X540_vf_info = { 740 .mac = ixgbe_mac_X540_vf, 741 .mac_ops = &ixgbevf_mac_ops, 742}; 743 744const struct ixgbevf_info ixgbevf_X550_vf_info = { 745 .mac = ixgbe_mac_X550_vf, 746 .mac_ops = &ixgbevf_mac_ops, 747}; 748 749const struct ixgbevf_info ixgbevf_X550EM_x_vf_info = { 750 .mac = ixgbe_mac_X550EM_x_vf, 751 .mac_ops = &ixgbevf_mac_ops, 752}; 753