sys/dev/netif/ixgbe/ixgbe_vf.c

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  33 /*$FreeBSD: src/sys/dev/ixgbe/ixgbe_vf.c,v 1.3 2012/07/05 20:51:44 jfv Exp $*/
  34
  35
  36 #include "ixgbe_api.h"
  37 #include "ixgbe_type.h"
  38 #include "ixgbe_vf.h"
  39
  40 #ifndef IXGBE_VFWRITE_REG
  41 #define IXGBE_VFWRITE_REG IXGBE_WRITE_REG
  42 #endif
  43 #ifndef IXGBE_VFREAD_REG
  44 #define IXGBE_VFREAD_REG IXGBE_READ_REG
  45 #endif
  46
  47 /**
  48  *  ixgbe_init_ops_vf - Initialize the pointers for vf
  49  *  @hw: pointer to hardware structure
  50  *
  51  *  This will assign function pointers, adapter-specific functions can
  52  *  override the assignment of generic function pointers by assigning
  53  *  their own adapter-specific function pointers.
  54  *  Does not touch the hardware.
  55  **/
  56 s32 ixgbe_init_ops_vf(struct ixgbe_hw *hw)
  57 {
  58         /* MAC */
  59         hw->mac.ops.init_hw = ixgbe_init_hw_vf;
  60         hw->mac.ops.reset_hw = ixgbe_reset_hw_vf;
  61         hw->mac.ops.start_hw = ixgbe_start_hw_vf;
  62         /* Cannot clear stats on VF */
  63         hw->mac.ops.clear_hw_cntrs = NULL;
  64         hw->mac.ops.get_media_type = NULL;
  65         hw->mac.ops.get_mac_addr = ixgbe_get_mac_addr_vf;
  66         hw->mac.ops.stop_adapter = ixgbe_stop_adapter_vf;
  67         hw->mac.ops.get_bus_info = NULL;
  68
  69         /* Link */
  70         hw->mac.ops.setup_link = ixgbe_setup_mac_link_vf;
  71         hw->mac.ops.check_link = ixgbe_check_mac_link_vf;
  72         hw->mac.ops.get_link_capabilities = NULL;
  73
  74         /* RAR, Multicast, VLAN */
  75         hw->mac.ops.set_rar = ixgbe_set_rar_vf;
  76         hw->mac.ops.set_uc_addr = ixgbevf_set_uc_addr_vf;
  77         hw->mac.ops.init_rx_addrs = NULL;
  78         hw->mac.ops.update_mc_addr_list = ixgbe_update_mc_addr_list_vf;
  79         hw->mac.ops.enable_mc = NULL;
  80         hw->mac.ops.disable_mc = NULL;
  81         hw->mac.ops.clear_vfta = NULL;
  82         hw->mac.ops.set_vfta = ixgbe_set_vfta_vf;
  83
  84         hw->mac.max_tx_queues = 1;
  85         hw->mac.max_rx_queues = 1;
  86
  87         hw->mbx.ops.init_params = ixgbe_init_mbx_params_vf;
  88
  89         return IXGBE_SUCCESS;
  90 }
  91
  92 /**
  93  *  ixgbe_start_hw_vf - Prepare hardware for Tx/Rx
  94  *  @hw: pointer to hardware structure
  95  *
  96  *  Starts the hardware by filling the bus info structure and media type, clears
  97  *  all on chip counters, initializes receive address registers, multicast
  98  *  table, VLAN filter table, calls routine to set up link and flow control
  99  *  settings, and leaves transmit and receive units disabled and uninitialized
 100  **/
 101 s32 ixgbe_start_hw_vf(struct ixgbe_hw *hw)
 102 {
 103         /* Clear adapter stopped flag */
 104         hw->adapter_stopped = FALSE;
 105
 106         return IXGBE_SUCCESS;
 107 }
 108
 109 /**
 110  *  ixgbe_init_hw_vf - virtual function hardware initialization
 111  *  @hw: pointer to hardware structure
 112  *
 113  *  Initialize the hardware by resetting the hardware and then starting
 114  *  the hardware
 115  **/
 116 s32 ixgbe_init_hw_vf(struct ixgbe_hw *hw)
 117 {
 118         s32 status = hw->mac.ops.start_hw(hw);
 119
 120         hw->mac.ops.get_mac_addr(hw, hw->mac.addr);
 121
 122         return status;
 123 }
 124
 125 /**
 126  *  ixgbe_reset_hw_vf - Performs hardware reset
 127  *  @hw: pointer to hardware structure
 128  *
 129  *  Resets the hardware by reseting the transmit and receive units, masks and
 130  *  clears all interrupts.
 131  **/
 132 s32 ixgbe_reset_hw_vf(struct ixgbe_hw *hw)
 133 {
 134         struct ixgbe_mbx_info *mbx = &hw->mbx;
 135         u32 timeout = IXGBE_VF_INIT_TIMEOUT;
 136         s32 ret_val = IXGBE_ERR_INVALID_MAC_ADDR;
 137         u32 ctrl, msgbuf[IXGBE_VF_PERMADDR_MSG_LEN];
 138         u8 *addr = (u8 *)(&msgbuf[1]);
 139
 140         DEBUGFUNC("ixgbevf_reset_hw_vf");
 141
 142         /* Call adapter stop to disable tx/rx and clear interrupts */
 143         hw->mac.ops.stop_adapter(hw);
 144
 145         DEBUGOUT("Issuing a function level reset to MAC\n");
 146
 147         ctrl = IXGBE_VFREAD_REG(hw, IXGBE_VFCTRL) | IXGBE_CTRL_RST;
 148         IXGBE_VFWRITE_REG(hw, IXGBE_VFCTRL, ctrl);
 149         IXGBE_WRITE_FLUSH(hw);
 150
 151         msec_delay(50);
 152
 153         /* we cannot reset while the RSTI / RSTD bits are asserted */
 154         while (!mbx->ops.check_for_rst(hw, 0) && timeout) {
 155                 timeout--;
 156                 usec_delay(5);
 157         }
 158
 159         if (timeout) {
 160                 /* mailbox timeout can now become active */
 161                 mbx->timeout = IXGBE_VF_MBX_INIT_TIMEOUT;
 162
 163                 msgbuf[0] = IXGBE_VF_RESET;
 164                 mbx->ops.write_posted(hw, msgbuf, 1, 0);
 165
 166                 msec_delay(10);
 167
 168                 /*
 169                  * set our "perm_addr" based on info provided by PF
 170                  * also set up the mc_filter_type which is piggy backed
 171                  * on the mac address in word 3
 172                  */
 173                 ret_val = mbx->ops.read_posted(hw, msgbuf,
 174                                                IXGBE_VF_PERMADDR_MSG_LEN, 0);
 175                 if (!ret_val) {
 176                         if (msgbuf[0] == (IXGBE_VF_RESET |
 177                                           IXGBE_VT_MSGTYPE_ACK)) {
 178                                 memcpy(hw->mac.perm_addr, addr,
 179                                        IXGBE_ETH_LENGTH_OF_ADDRESS);
 180                                 hw->mac.mc_filter_type =
 181                                         msgbuf[IXGBE_VF_MC_TYPE_WORD];
 182                         } else {
 183                                 ret_val = IXGBE_ERR_INVALID_MAC_ADDR;
 184                         }
 185                 }
 186         }
 187
 188         return ret_val;
 189 }
 190
 191 /**
 192  *  ixgbe_stop_adapter_vf - Generic stop Tx/Rx units
 193  *  @hw: pointer to hardware structure
 194  *
 195  *  Sets the adapter_stopped flag within ixgbe_hw struct. Clears interrupts,
 196  *  disables transmit and receive units. The adapter_stopped flag is used by
 197  *  the shared code and drivers to determine if the adapter is in a stopped
 198  *  state and should not touch the hardware.
 199  **/
 200 s32 ixgbe_stop_adapter_vf(struct ixgbe_hw *hw)
 201 {
 202         u32 reg_val;
 203         u16 i;
 204
 205         /*
 206          * Set the adapter_stopped flag so other driver functions stop touching
 207          * the hardware
 208          */
 209         hw->adapter_stopped = TRUE;
 210
 211         /* Clear interrupt mask to stop from interrupts being generated */
 212         IXGBE_VFWRITE_REG(hw, IXGBE_VTEIMC, IXGBE_VF_IRQ_CLEAR_MASK);
 213
 214         /* Clear any pending interrupts, flush previous writes */
 215         IXGBE_VFREAD_REG(hw, IXGBE_VTEICR);
 216
 217         /* Disable the transmit unit.  Each queue must be disabled. */
 218         for (i = 0; i < hw->mac.max_tx_queues; i++)
 219                 IXGBE_VFWRITE_REG(hw, IXGBE_VFTXDCTL(i), IXGBE_TXDCTL_SWFLSH);
 220
 221         /* Disable the receive unit by stopping each queue */
 222         for (i = 0; i < hw->mac.max_rx_queues; i++) {
 223                 reg_val = IXGBE_VFREAD_REG(hw, IXGBE_VFRXDCTL(i));
 224                 reg_val &= ~IXGBE_RXDCTL_ENABLE;
 225                 IXGBE_VFWRITE_REG(hw, IXGBE_VFRXDCTL(i), reg_val);
 226         }
 227
 228         /* flush all queues disables */
 229         IXGBE_WRITE_FLUSH(hw);
 230         msec_delay(2);
 231
 232         return IXGBE_SUCCESS;
 233 }
 234
 235 /**
 236  *  ixgbe_mta_vector - Determines bit-vector in multicast table to set
 237  *  @hw: pointer to hardware structure
 238  *  @mc_addr: the multicast address
 239  *
 240  *  Extracts the 12 bits, from a multicast address, to determine which
 241  *  bit-vector to set in the multicast table. The hardware uses 12 bits, from
 242  *  incoming rx multicast addresses, to determine the bit-vector to check in
 243  *  the MTA. Which of the 4 combination, of 12-bits, the hardware uses is set
 244  *  by the MO field of the MCSTCTRL. The MO field is set during initialization
 245  *  to mc_filter_type.
 246  **/
 247 static s32 ixgbe_mta_vector(struct ixgbe_hw *hw, u8 *mc_addr)
 248 {
 249         u32 vector = 0;
 250
 251         switch (hw->mac.mc_filter_type) {
 252         case 0:   /* use bits [47:36] of the address */
 253                 vector = ((mc_addr[4] >> 4) | (((u16)mc_addr[5]) << 4));
 254                 break;
 255         case 1:   /* use bits [46:35] of the address */
 256                 vector = ((mc_addr[4] >> 3) | (((u16)mc_addr[5]) << 5));
 257                 break;
 258         case 2:   /* use bits [45:34] of the address */
 259                 vector = ((mc_addr[4] >> 2) | (((u16)mc_addr[5]) << 6));
 260                 break;
 261         case 3:   /* use bits [43:32] of the address */
 262                 vector = ((mc_addr[4]) | (((u16)mc_addr[5]) << 8));
 263                 break;
 264         default:  /* Invalid mc_filter_type */
 265                 DEBUGOUT("MC filter type param set incorrectly\n");
 266                 ASSERT(0);
 267                 break;
 268         }
 269
 270         /* vector can only be 12-bits or boundary will be exceeded */
 271         vector &= 0xFFF;
 272         return vector;
 273 }
 274
 275 /**
 276  *  ixgbe_set_rar_vf - set device MAC address
 277  *  @hw: pointer to hardware structure
 278  *  @index: Receive address register to write
 279  *  @addr: Address to put into receive address register
 280  *  @vmdq: VMDq "set" or "pool" index
 281  *  @enable_addr: set flag that address is active
 282  **/
 283 s32 ixgbe_set_rar_vf(struct ixgbe_hw *hw, u32 index, u8 *addr, u32 vmdq,
 284                      u32 enable_addr)
 285 {
 286         struct ixgbe_mbx_info *mbx = &hw->mbx;
 287         u32 msgbuf[3];
 288         u8 *msg_addr = (u8 *)(&msgbuf[1]);
 289         s32 ret_val;
 290         UNREFERENCED_3PARAMETER(vmdq, enable_addr, index);
 291
 292         memset(msgbuf, 0, 12);
 293         msgbuf[0] = IXGBE_VF_SET_MAC_ADDR;
 294         memcpy(msg_addr, addr, 6);
 295         ret_val = mbx->ops.write_posted(hw, msgbuf, 3, 0);
 296
 297         if (!ret_val)
 298                 ret_val = mbx->ops.read_posted(hw, msgbuf, 3, 0);
 299
 300         msgbuf[0] &= ~IXGBE_VT_MSGTYPE_CTS;
 301
 302         /* if nacked the address was rejected, use "perm_addr" */
 303         if (!ret_val &&
 304             (msgbuf[0] == (IXGBE_VF_SET_MAC_ADDR | IXGBE_VT_MSGTYPE_NACK)))
 305                 ixgbe_get_mac_addr_vf(hw, hw->mac.addr);
 306
 307         return ret_val;
 308 }
 309
 310 /**
 311  *  ixgbe_update_mc_addr_list_vf - Update Multicast addresses
 312  *  @hw: pointer to the HW structure
 313  *  @mc_addr_list: array of multicast addresses to program
 314  *  @mc_addr_count: number of multicast addresses to program
 315  *  @next: caller supplied function to return next address in list
 316  *
 317  *  Updates the Multicast Table Array.
 318  **/
 319 s32 ixgbe_update_mc_addr_list_vf(struct ixgbe_hw *hw, u8 *mc_addr_list,
 320                                  u32 mc_addr_count, ixgbe_mc_addr_itr next,
 321                                  bool clear)
 322 {
 323         struct ixgbe_mbx_info *mbx = &hw->mbx;
 324         u32 msgbuf[IXGBE_VFMAILBOX_SIZE];
 325         u16 *vector_list = (u16 *)&msgbuf[1];
 326         u32 vector;
 327         u32 cnt, i;
 328         u32 vmdq;
 329
 330         UNREFERENCED_1PARAMETER(clear);
 331
 332         DEBUGFUNC("ixgbe_update_mc_addr_list_vf");
 333
 334         /* Each entry in the list uses 1 16 bit word.  We have 30
 335          * 16 bit words available in our HW msg buffer (minus 1 for the
 336          * msg type).  That's 30 hash values if we pack 'em right.  If
 337          * there are more than 30 MC addresses to add then punt the
 338          * extras for now and then add code to handle more than 30 later.
 339          * It would be unusual for a server to request that many multi-cast
 340          * addresses except for in large enterprise network environments.
 341          */
 342
 343         DEBUGOUT1("MC Addr Count = %d\n", mc_addr_count);
 344
 345         cnt = (mc_addr_count > 30) ? 30 : mc_addr_count;
 346         msgbuf[0] = IXGBE_VF_SET_MULTICAST;
 347         msgbuf[0] |= cnt << IXGBE_VT_MSGINFO_SHIFT;
 348
 349         for (i = 0; i < cnt; i++) {
 350                 vector = ixgbe_mta_vector(hw, next(hw, &mc_addr_list, &vmdq));
 351                 DEBUGOUT1("Hash value = 0x%03X\n", vector);
 352                 vector_list[i] = (u16)vector;
 353         }
 354
 355         return mbx->ops.write_posted(hw, msgbuf, IXGBE_VFMAILBOX_SIZE, 0);
 356 }
 357
 358 /**
 359  *  ixgbe_set_vfta_vf - Set/Unset vlan filter table address
 360  *  @hw: pointer to the HW structure
 361  *  @vlan: 12 bit VLAN ID
 362  *  @vind: unused by VF drivers
 363  *  @vlan_on: if TRUE then set bit, else clear bit
 364  **/
 365 s32 ixgbe_set_vfta_vf(struct ixgbe_hw *hw, u32 vlan, u32 vind, bool vlan_on)
 366 {
 367         struct ixgbe_mbx_info *mbx = &hw->mbx;
 368         u32 msgbuf[2];
 369         s32 ret_val;
 370         UNREFERENCED_1PARAMETER(vind);
 371
 372         msgbuf[0] = IXGBE_VF_SET_VLAN;
 373         msgbuf[1] = vlan;
 374         /* Setting the 8 bit field MSG INFO to TRUE indicates "add" */
 375         msgbuf[0] |= vlan_on << IXGBE_VT_MSGINFO_SHIFT;
 376
 377         ret_val = mbx->ops.write_posted(hw, msgbuf, 2, 0);
 378         if (!ret_val)
 379                 ret_val = mbx->ops.read_posted(hw, msgbuf, 1, 0);
 380
 381         if (!ret_val && (msgbuf[0] & IXGBE_VT_MSGTYPE_ACK))
 382                 return IXGBE_SUCCESS;
 383
 384         return ret_val | (msgbuf[0] & IXGBE_VT_MSGTYPE_NACK);
 385 }
 386
 387 /**
 388  *  ixgbe_get_num_of_tx_queues_vf - Get number of TX queues
 389  *  @hw: pointer to hardware structure
 390  *
 391  *  Returns the number of transmit queues for the given adapter.
 392  **/
 393 u32 ixgbe_get_num_of_tx_queues_vf(struct ixgbe_hw *hw)
 394 {
 395         UNREFERENCED_1PARAMETER(hw);
 396         return IXGBE_VF_MAX_TX_QUEUES;
 397 }
 398
 399 /**
 400  *  ixgbe_get_num_of_rx_queues_vf - Get number of RX queues
 401  *  @hw: pointer to hardware structure
 402  *
 403  *  Returns the number of receive queues for the given adapter.
 404  **/
 405 u32 ixgbe_get_num_of_rx_queues_vf(struct ixgbe_hw *hw)
 406 {
 407         UNREFERENCED_1PARAMETER(hw);
 408         return IXGBE_VF_MAX_RX_QUEUES;
 409 }
 410
 411 /**
 412  *  ixgbe_get_mac_addr_vf - Read device MAC address
 413  *  @hw: pointer to the HW structure
 414  **/
 415 s32 ixgbe_get_mac_addr_vf(struct ixgbe_hw *hw, u8 *mac_addr)
 416 {
 417         int i;
 418
 419         for (i = 0; i < IXGBE_ETH_LENGTH_OF_ADDRESS; i++)
 420                 mac_addr[i] = hw->mac.perm_addr[i];
 421
 422         return IXGBE_SUCCESS;
 423 }
 424
 425 s32 ixgbevf_set_uc_addr_vf(struct ixgbe_hw *hw, u32 index, u8 *addr)
 426 {
 427         struct ixgbe_mbx_info *mbx = &hw->mbx;
 428         u32 msgbuf[3];
 429         u8 *msg_addr = (u8 *)(&msgbuf[1]);
 430         s32 ret_val;
 431
 432         memset(msgbuf, 0, sizeof(msgbuf));
 433         /*
 434          * If index is one then this is the start of a new list and needs
 435          * indication to the PF so it can do it's own list management.
 436          * If it is zero then that tells the PF to just clear all of
 437          * this VF's macvlans and there is no new list.
 438          */
 439         msgbuf[0] |= index << IXGBE_VT_MSGINFO_SHIFT;
 440         msgbuf[0] |= IXGBE_VF_SET_MACVLAN;
 441         if (addr)
 442                 memcpy(msg_addr, addr, 6);
 443         ret_val = mbx->ops.write_posted(hw, msgbuf, 3, 0);
 444
 445         if (!ret_val)
 446                 ret_val = mbx->ops.read_posted(hw, msgbuf, 3, 0);
 447
 448         msgbuf[0] &= ~IXGBE_VT_MSGTYPE_CTS;
 449
 450         if (!ret_val)
 451                 if (msgbuf[0] == (IXGBE_VF_SET_MACVLAN | IXGBE_VT_MSGTYPE_NACK))
 452                         ret_val = IXGBE_ERR_OUT_OF_MEM;
 453
 454         return ret_val;
 455 }
 456
 457 /**
 458  *  ixgbe_setup_mac_link_vf - Setup MAC link settings
 459  *  @hw: pointer to hardware structure
 460  *  @speed: new link speed
 461  *  @autoneg: TRUE if autonegotiation enabled
 462  *  @autoneg_wait_to_complete: TRUE when waiting for completion is needed
 463  *
 464  *  Set the link speed in the AUTOC register and restarts link.
 465  **/
 466 s32 ixgbe_setup_mac_link_vf(struct ixgbe_hw *hw,
 467                             ixgbe_link_speed speed, bool autoneg,
 468                             bool autoneg_wait_to_complete)
 469 {
 470         UNREFERENCED_4PARAMETER(hw, speed, autoneg, autoneg_wait_to_complete);
 471         return IXGBE_SUCCESS;
 472 }
 473
 474 /**
 475  *  ixgbe_check_mac_link_vf - Get link/speed status
 476  *  @hw: pointer to hardware structure
 477  *  @speed: pointer to link speed
 478  *  @link_up: TRUE is link is up, FALSE otherwise
 479  *  @autoneg_wait_to_complete: TRUE when waiting for completion is needed
 480  *
 481  *  Reads the links register to determine if link is up and the current speed
 482  **/
 483 s32 ixgbe_check_mac_link_vf(struct ixgbe_hw *hw, ixgbe_link_speed *speed,
 484                             bool *link_up, bool autoneg_wait_to_complete)
 485 {
 486         u32 links_reg;
 487         UNREFERENCED_1PARAMETER(autoneg_wait_to_complete);
 488
 489         if (!(hw->mbx.ops.check_for_rst(hw, 0))) {
 490                 *link_up = FALSE;
 491                 *speed = 0;
 492                 return -1;
 493         }
 494
 495         links_reg = IXGBE_VFREAD_REG(hw, IXGBE_VFLINKS);
 496
 497         if (links_reg & IXGBE_LINKS_UP)
 498                 *link_up = TRUE;
 499         else
 500                 *link_up = FALSE;
 501
 502         switch (links_reg & IXGBE_LINKS_SPEED_10G_82599) {
 503         case IXGBE_LINKS_SPEED_10G_82599:
 504                 *speed = IXGBE_LINK_SPEED_10GB_FULL;
 505                 break;
 506         case IXGBE_LINKS_SPEED_1G_82599:
 507                 *speed = IXGBE_LINK_SPEED_1GB_FULL;
 508                 break;
 509         case IXGBE_LINKS_SPEED_100_82599:
 510                 *speed = IXGBE_LINK_SPEED_100_FULL;
 511                 break;
 512         }
 513
 514         return IXGBE_SUCCESS;
 515 }
 516