drivers/net/ethernet/chelsio/cxgb4vf/t4vf_hw.c

   1 /*
   2  * This file is part of the Chelsio T4 PCI-E SR-IOV Virtual Function Ethernet
   3  * driver for Linux.
   4  *
   5  * Copyright (c) 2009-2010 Chelsio Communications, Inc. All rights reserved.
   6  *
   7  * This software is available to you under a choice of one of two
   8  * licenses.  You may choose to be licensed under the terms of the GNU
   9  * General Public License (GPL) Version 2, available from the file
  10  * COPYING in the main directory of this source tree, or the
  11  * OpenIB.org BSD license below:
  12  *
  13  *     Redistribution and use in source and binary forms, with or
  14  *     without modification, are permitted provided that the following
  15  *     conditions are met:
  16  *
  17  *      - Redistributions of source code must retain the above
  18  *        copyright notice, this list of conditions and the following
  19  *        disclaimer.
  20  *
  21  *      - Redistributions in binary form must reproduce the above
  22  *        copyright notice, this list of conditions and the following
  23  *        disclaimer in the documentation and/or other materials
  24  *        provided with the distribution.
  25  *
  26  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  27  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  28  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  29  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  30  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  31  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  32  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  33  * SOFTWARE.
  34  */
  35
  36 #include <linux/pci.h>
  37
  38 #include "t4vf_common.h"
  39 #include "t4vf_defs.h"
  40
  41 #include "../cxgb4/t4_regs.h"
  42 #include "../cxgb4/t4_values.h"
  43 #include "../cxgb4/t4fw_api.h"
  44
  45 /*
  46  * Wait for the device to become ready (signified by our "who am I" register
  47  * returning a value other than all 1's).  Return an error if it doesn't
  48  * become ready ...
  49  */
  50 int t4vf_wait_dev_ready(struct adapter *adapter)
  51 {
  52         const u32 whoami = T4VF_PL_BASE_ADDR + PL_VF_WHOAMI;
  53         const u32 notready1 = 0xffffffff;
  54         const u32 notready2 = 0xeeeeeeee;
  55         u32 val;
  56
  57         val = t4_read_reg(adapter, whoami);
  58         if (val != notready1 && val != notready2)
  59                 return 0;
  60         msleep(500);
  61         val = t4_read_reg(adapter, whoami);
  62         if (val != notready1 && val != notready2)
  63                 return 0;
  64         else
  65                 return -EIO;
  66 }
  67
  68 /*
  69  * Get the reply to a mailbox command and store it in @rpl in big-endian order
  70  * (since the firmware data structures are specified in a big-endian layout).
  71  */
  72 static void get_mbox_rpl(struct adapter *adapter, __be64 *rpl, int size,
  73                          u32 mbox_data)
  74 {
  75         for ( ; size; size -= 8, mbox_data += 8)
  76                 *rpl++ = cpu_to_be64(t4_read_reg64(adapter, mbox_data));
  77 }
  78
  79 /**
  80  *      t4vf_record_mbox - record a Firmware Mailbox Command/Reply in the log
  81  *      @adapter: the adapter
  82  *      @cmd: the Firmware Mailbox Command or Reply
  83  *      @size: command length in bytes
  84  *      @access: the time (ms) needed to access the Firmware Mailbox
  85  *      @execute: the time (ms) the command spent being executed
  86  */
  87 static void t4vf_record_mbox(struct adapter *adapter, const __be64 *cmd,
  88                              int size, int access, int execute)
  89 {
  90         struct mbox_cmd_log *log = adapter->mbox_log;
  91         struct mbox_cmd *entry;
  92         int i;
  93
  94         entry = mbox_cmd_log_entry(log, log->cursor++);
  95         if (log->cursor == log->size)
  96                 log->cursor = 0;
  97
  98         for (i = 0; i < size / 8; i++)
  99                 entry->cmd[i] = be64_to_cpu(cmd[i]);
 100         while (i < MBOX_LEN / 8)
 101                 entry->cmd[i++] = 0;
 102         entry->timestamp = jiffies;
 103         entry->seqno = log->seqno++;
 104         entry->access = access;
 105         entry->execute = execute;
 106 }
 107
 108 /**
 109  *      t4vf_wr_mbox_core - send a command to FW through the mailbox
 110  *      @adapter: the adapter
 111  *      @cmd: the command to write
 112  *      @size: command length in bytes
 113  *      @rpl: where to optionally store the reply
 114  *      @sleep_ok: if true we may sleep while awaiting command completion
 115  *
 116  *      Sends the given command to FW through the mailbox and waits for the
 117  *      FW to execute the command.  If @rpl is not %NULL it is used to store
 118  *      the FW's reply to the command.  The command and its optional reply
 119  *      are of the same length.  FW can take up to 500 ms to respond.
 120  *      @sleep_ok determines whether we may sleep while awaiting the response.
 121  *      If sleeping is allowed we use progressive backoff otherwise we spin.
 122  *
 123  *      The return value is 0 on success or a negative errno on failure.  A
 124  *      failure can happen either because we are not able to execute the
 125  *      command or FW executes it but signals an error.  In the latter case
 126  *      the return value is the error code indicated by FW (negated).
 127  */
 128 int t4vf_wr_mbox_core(struct adapter *adapter, const void *cmd, int size,
 129                       void *rpl, bool sleep_ok)
 130 {
 131         static const int delay[] = {
 132                 1, 1, 3, 5, 10, 10, 20, 50, 100
 133         };
 134
 135         u16 access = 0, execute = 0;
 136         u32 v, mbox_data;
 137         int i, ms, delay_idx, ret;
 138         const __be64 *p;
 139         u32 mbox_ctl = T4VF_CIM_BASE_ADDR + CIM_VF_EXT_MAILBOX_CTRL;
 140         u32 cmd_op = FW_CMD_OP_G(be32_to_cpu(((struct fw_cmd_hdr *)cmd)->hi));
 141         __be64 cmd_rpl[MBOX_LEN / 8];
 142         struct mbox_list entry;
 143
 144         /* In T6, mailbox size is changed to 128 bytes to avoid
 145          * invalidating the entire prefetch buffer.
 146          */
 147         if (CHELSIO_CHIP_VERSION(adapter->params.chip) <= CHELSIO_T5)
 148                 mbox_data = T4VF_MBDATA_BASE_ADDR;
 149         else
 150                 mbox_data = T6VF_MBDATA_BASE_ADDR;
 151
 152         /*
 153          * Commands must be multiples of 16 bytes in length and may not be
 154          * larger than the size of the Mailbox Data register array.
 155          */
 156         if ((size % 16) != 0 ||
 157             size > NUM_CIM_VF_MAILBOX_DATA_INSTANCES * 4)
 158                 return -EINVAL;
 159
 160         /* Queue ourselves onto the mailbox access list.  When our entry is at
 161          * the front of the list, we have rights to access the mailbox.  So we
 162          * wait [for a while] till we're at the front [or bail out with an
 163          * EBUSY] ...
 164          */
 165         spin_lock(&adapter->mbox_lock);
 166         list_add_tail(&entry.list, &adapter->mlist.list);
 167         spin_unlock(&adapter->mbox_lock);
 168
 169         delay_idx = 0;
 170         ms = delay[0];
 171
 172         for (i = 0; ; i += ms) {
 173                 /* If we've waited too long, return a busy indication.  This
 174                  * really ought to be based on our initial position in the
 175                  * mailbox access list but this is a start.  We very rearely
 176                  * contend on access to the mailbox ...
 177                  */
 178                 if (i > FW_CMD_MAX_TIMEOUT) {
 179                         spin_lock(&adapter->mbox_lock);
 180                         list_del(&entry.list);
 181                         spin_unlock(&adapter->mbox_lock);
 182                         ret = -EBUSY;
 183                         t4vf_record_mbox(adapter, cmd, size, access, ret);
 184                         return ret;
 185                 }
 186
 187                 /* If we're at the head, break out and start the mailbox
 188                  * protocol.
 189                  */
 190                 if (list_first_entry(&adapter->mlist.list, struct mbox_list,
 191                                      list) == &entry)
 192                         break;
 193
 194                 /* Delay for a bit before checking again ... */
 195                 if (sleep_ok) {
 196                         ms = delay[delay_idx];  /* last element may repeat */
 197                         if (delay_idx < ARRAY_SIZE(delay) - 1)
 198                                 delay_idx++;
 199                         msleep(ms);
 200                 } else {
 201                         mdelay(ms);
 202                 }
 203         }
 204
 205         /*
 206          * Loop trying to get ownership of the mailbox.  Return an error
 207          * if we can't gain ownership.
 208          */
 209         v = MBOWNER_G(t4_read_reg(adapter, mbox_ctl));
 210         for (i = 0; v == MBOX_OWNER_NONE && i < 3; i++)
 211                 v = MBOWNER_G(t4_read_reg(adapter, mbox_ctl));
 212         if (v != MBOX_OWNER_DRV) {
 213                 spin_lock(&adapter->mbox_lock);
 214                 list_del(&entry.list);
 215                 spin_unlock(&adapter->mbox_lock);
 216                 ret = (v == MBOX_OWNER_FW) ? -EBUSY : -ETIMEDOUT;
 217                 t4vf_record_mbox(adapter, cmd, size, access, ret);
 218                 return ret;
 219         }
 220
 221         /*
 222          * Write the command array into the Mailbox Data register array and
 223          * transfer ownership of the mailbox to the firmware.
 224          *
 225          * For the VFs, the Mailbox Data "registers" are actually backed by
 226          * T4's "MA" interface rather than PL Registers (as is the case for
 227          * the PFs).  Because these are in different coherency domains, the
 228          * write to the VF's PL-register-backed Mailbox Control can race in
 229          * front of the writes to the MA-backed VF Mailbox Data "registers".
 230          * So we need to do a read-back on at least one byte of the VF Mailbox
 231          * Data registers before doing the write to the VF Mailbox Control
 232          * register.
 233          */
 234         if (cmd_op != FW_VI_STATS_CMD)
 235                 t4vf_record_mbox(adapter, cmd, size, access, 0);
 236         for (i = 0, p = cmd; i < size; i += 8)
 237                 t4_write_reg64(adapter, mbox_data + i, be64_to_cpu(*p++));
 238         t4_read_reg(adapter, mbox_data);         /* flush write */
 239
 240         t4_write_reg(adapter, mbox_ctl,
 241                      MBMSGVALID_F | MBOWNER_V(MBOX_OWNER_FW));
 242         t4_read_reg(adapter, mbox_ctl);          /* flush write */
 243
 244         /*
 245          * Spin waiting for firmware to acknowledge processing our command.
 246          */
 247         delay_idx = 0;
 248         ms = delay[0];
 249
 250         for (i = 0; i < FW_CMD_MAX_TIMEOUT; i += ms) {
 251                 if (sleep_ok) {
 252                         ms = delay[delay_idx];
 253                         if (delay_idx < ARRAY_SIZE(delay) - 1)
 254                                 delay_idx++;
 255                         msleep(ms);
 256                 } else
 257                         mdelay(ms);
 258
 259                 /*
 260                  * If we're the owner, see if this is the reply we wanted.
 261                  */
 262                 v = t4_read_reg(adapter, mbox_ctl);
 263                 if (MBOWNER_G(v) == MBOX_OWNER_DRV) {
 264                         /*
 265                          * If the Message Valid bit isn't on, revoke ownership
 266                          * of the mailbox and continue waiting for our reply.
 267                          */
 268                         if ((v & MBMSGVALID_F) == 0) {
 269                                 t4_write_reg(adapter, mbox_ctl,
 270                                              MBOWNER_V(MBOX_OWNER_NONE));
 271                                 continue;
 272                         }
 273
 274                         /*
 275                          * We now have our reply.  Extract the command return
 276                          * value, copy the reply back to our caller's buffer
 277                          * (if specified) and revoke ownership of the mailbox.
 278                          * We return the (negated) firmware command return
 279                          * code (this depends on FW_SUCCESS == 0).
 280                          */
 281                         get_mbox_rpl(adapter, cmd_rpl, size, mbox_data);
 282
 283                         /* return value in low-order little-endian word */
 284                         v = be64_to_cpu(cmd_rpl[0]);
 285
 286                         if (rpl) {
 287                                 /* request bit in high-order BE word */
 288                                 WARN_ON((be32_to_cpu(*(const __be32 *)cmd)
 289                                          & FW_CMD_REQUEST_F) == 0);
 290                                 memcpy(rpl, cmd_rpl, size);
 291                                 WARN_ON((be32_to_cpu(*(__be32 *)rpl)
 292                                          & FW_CMD_REQUEST_F) != 0);
 293                         }
 294                         t4_write_reg(adapter, mbox_ctl,
 295                                      MBOWNER_V(MBOX_OWNER_NONE));
 296                         execute = i + ms;
 297                         if (cmd_op != FW_VI_STATS_CMD)
 298                                 t4vf_record_mbox(adapter, cmd_rpl, size, access,
 299                                                  execute);
 300                         spin_lock(&adapter->mbox_lock);
 301                         list_del(&entry.list);
 302                         spin_unlock(&adapter->mbox_lock);
 303                         return -FW_CMD_RETVAL_G(v);
 304                 }
 305         }
 306
 307         /* We timed out.  Return the error ... */
 308         ret = -ETIMEDOUT;
 309         t4vf_record_mbox(adapter, cmd, size, access, ret);
 310         spin_lock(&adapter->mbox_lock);
 311         list_del(&entry.list);
 312         spin_unlock(&adapter->mbox_lock);
 313         return ret;
 314 }
 315
 316 #define ADVERT_MASK (FW_PORT_CAP_SPEED_100M | FW_PORT_CAP_SPEED_1G |\
 317                      FW_PORT_CAP_SPEED_10G | FW_PORT_CAP_SPEED_40G | \
 318                      FW_PORT_CAP_SPEED_100G | FW_PORT_CAP_ANEG)
 319
 320 /**
 321  *      init_link_config - initialize a link's SW state
 322  *      @lc: structure holding the link state
 323  *      @caps: link capabilities
 324  *
 325  *      Initializes the SW state maintained for each link, including the link's
 326  *      capabilities and default speed/flow-control/autonegotiation settings.
 327  */
 328 static void init_link_config(struct link_config *lc, unsigned int caps)
 329 {
 330         lc->supported = caps;
 331         lc->lp_advertising = 0;
 332         lc->requested_speed = 0;
 333         lc->speed = 0;
 334         lc->requested_fc = lc->fc = PAUSE_RX | PAUSE_TX;
 335         if (lc->supported & FW_PORT_CAP_ANEG) {
 336                 lc->advertising = lc->supported & ADVERT_MASK;
 337                 lc->autoneg = AUTONEG_ENABLE;
 338                 lc->requested_fc |= PAUSE_AUTONEG;
 339         } else {
 340                 lc->advertising = 0;
 341                 lc->autoneg = AUTONEG_DISABLE;
 342         }
 343 }
 344
 345 /**
 346  *      t4vf_port_init - initialize port hardware/software state
 347  *      @adapter: the adapter
 348  *      @pidx: the adapter port index
 349  */
 350 int t4vf_port_init(struct adapter *adapter, int pidx)
 351 {
 352         struct port_info *pi = adap2pinfo(adapter, pidx);
 353         struct fw_vi_cmd vi_cmd, vi_rpl;
 354         struct fw_port_cmd port_cmd, port_rpl;
 355         int v;
 356
 357         /*
 358          * Execute a VI Read command to get our Virtual Interface information
 359          * like MAC address, etc.
 360          */
 361         memset(&vi_cmd, 0, sizeof(vi_cmd));
 362         vi_cmd.op_to_vfn = cpu_to_be32(FW_CMD_OP_V(FW_VI_CMD) |
 363                                        FW_CMD_REQUEST_F |
 364                                        FW_CMD_READ_F);
 365         vi_cmd.alloc_to_len16 = cpu_to_be32(FW_LEN16(vi_cmd));
 366         vi_cmd.type_viid = cpu_to_be16(FW_VI_CMD_VIID_V(pi->viid));
 367         v = t4vf_wr_mbox(adapter, &vi_cmd, sizeof(vi_cmd), &vi_rpl);
 368         if (v)
 369                 return v;
 370
 371         BUG_ON(pi->port_id != FW_VI_CMD_PORTID_G(vi_rpl.portid_pkd));
 372         pi->rss_size = FW_VI_CMD_RSSSIZE_G(be16_to_cpu(vi_rpl.rsssize_pkd));
 373         t4_os_set_hw_addr(adapter, pidx, vi_rpl.mac);
 374
 375         /*
 376          * If we don't have read access to our port information, we're done
 377          * now.  Otherwise, execute a PORT Read command to get it ...
 378          */
 379         if (!(adapter->params.vfres.r_caps & FW_CMD_CAP_PORT))
 380                 return 0;
 381
 382         memset(&port_cmd, 0, sizeof(port_cmd));
 383         port_cmd.op_to_portid = cpu_to_be32(FW_CMD_OP_V(FW_PORT_CMD) |
 384                                             FW_CMD_REQUEST_F |
 385                                             FW_CMD_READ_F |
 386                                             FW_PORT_CMD_PORTID_V(pi->port_id));
 387         port_cmd.action_to_len16 =
 388                 cpu_to_be32(FW_PORT_CMD_ACTION_V(FW_PORT_ACTION_GET_PORT_INFO) |
 389                             FW_LEN16(port_cmd));
 390         v = t4vf_wr_mbox(adapter, &port_cmd, sizeof(port_cmd), &port_rpl);
 391         if (v)
 392                 return v;
 393
 394         v = be32_to_cpu(port_rpl.u.info.lstatus_to_modtype);
 395         pi->mdio_addr = (v & FW_PORT_CMD_MDIOCAP_F) ?
 396                         FW_PORT_CMD_MDIOADDR_G(v) : -1;
 397         pi->port_type = FW_PORT_CMD_PTYPE_G(v);
 398         pi->mod_type = FW_PORT_MOD_TYPE_NA;
 399
 400         init_link_config(&pi->link_cfg, be16_to_cpu(port_rpl.u.info.pcap));
 401
 402         return 0;
 403 }
 404
 405 /**
 406  *      t4vf_fw_reset - issue a reset to FW
 407  *      @adapter: the adapter
 408  *
 409  *      Issues a reset command to FW.  For a Physical Function this would
 410  *      result in the Firmware resetting all of its state.  For a Virtual
 411  *      Function this just resets the state associated with the VF.
 412  */
 413 int t4vf_fw_reset(struct adapter *adapter)
 414 {
 415         struct fw_reset_cmd cmd;
 416
 417         memset(&cmd, 0, sizeof(cmd));
 418         cmd.op_to_write = cpu_to_be32(FW_CMD_OP_V(FW_RESET_CMD) |
 419                                       FW_CMD_WRITE_F);
 420         cmd.retval_len16 = cpu_to_be32(FW_LEN16(cmd));
 421         return t4vf_wr_mbox(adapter, &cmd, sizeof(cmd), NULL);
 422 }
 423
 424 /**
 425  *      t4vf_query_params - query FW or device parameters
 426  *      @adapter: the adapter
 427  *      @nparams: the number of parameters
 428  *      @params: the parameter names
 429  *      @vals: the parameter values
 430  *
 431  *      Reads the values of firmware or device parameters.  Up to 7 parameters
 432  *      can be queried at once.
 433  */
 434 static int t4vf_query_params(struct adapter *adapter, unsigned int nparams,
 435                              const u32 *params, u32 *vals)
 436 {
 437         int i, ret;
 438         struct fw_params_cmd cmd, rpl;
 439         struct fw_params_param *p;
 440         size_t len16;
 441
 442         if (nparams > 7)
 443                 return -EINVAL;
 444
 445         memset(&cmd, 0, sizeof(cmd));
 446         cmd.op_to_vfn = cpu_to_be32(FW_CMD_OP_V(FW_PARAMS_CMD) |
 447                                     FW_CMD_REQUEST_F |
 448                                     FW_CMD_READ_F);
 449         len16 = DIV_ROUND_UP(offsetof(struct fw_params_cmd,
 450                                       param[nparams].mnem), 16);
 451         cmd.retval_len16 = cpu_to_be32(FW_CMD_LEN16_V(len16));
 452         for (i = 0, p = &cmd.param[0]; i < nparams; i++, p++)
 453                 p->mnem = htonl(*params++);
 454
 455         ret = t4vf_wr_mbox(adapter, &cmd, sizeof(cmd), &rpl);
 456         if (ret == 0)
 457                 for (i = 0, p = &rpl.param[0]; i < nparams; i++, p++)
 458                         *vals++ = be32_to_cpu(p->val);
 459         return ret;
 460 }
 461
 462 /**
 463  *      t4vf_set_params - sets FW or device parameters
 464  *      @adapter: the adapter
 465  *      @nparams: the number of parameters
 466  *      @params: the parameter names
 467  *      @vals: the parameter values
 468  *
 469  *      Sets the values of firmware or device parameters.  Up to 7 parameters
 470  *      can be specified at once.
 471  */
 472 int t4vf_set_params(struct adapter *adapter, unsigned int nparams,
 473                     const u32 *params, const u32 *vals)
 474 {
 475         int i;
 476         struct fw_params_cmd cmd;
 477         struct fw_params_param *p;
 478         size_t len16;
 479
 480         if (nparams > 7)
 481                 return -EINVAL;
 482
 483         memset(&cmd, 0, sizeof(cmd));
 484         cmd.op_to_vfn = cpu_to_be32(FW_CMD_OP_V(FW_PARAMS_CMD) |
 485                                     FW_CMD_REQUEST_F |
 486                                     FW_CMD_WRITE_F);
 487         len16 = DIV_ROUND_UP(offsetof(struct fw_params_cmd,
 488                                       param[nparams]), 16);
 489         cmd.retval_len16 = cpu_to_be32(FW_CMD_LEN16_V(len16));
 490         for (i = 0, p = &cmd.param[0]; i < nparams; i++, p++) {
 491                 p->mnem = cpu_to_be32(*params++);
 492                 p->val = cpu_to_be32(*vals++);
 493         }
 494
 495         return t4vf_wr_mbox(adapter, &cmd, sizeof(cmd), NULL);
 496 }
 497
 498 /**
 499  *      t4vf_fl_pkt_align - return the fl packet alignment
 500  *      @adapter: the adapter
 501  *
 502  *      T4 has a single field to specify the packing and padding boundary.
 503  *      T5 onwards has separate fields for this and hence the alignment for
 504  *      next packet offset is maximum of these two.  And T6 changes the
 505  *      Ingress Padding Boundary Shift, so it's all a mess and it's best
 506  *      if we put this in low-level Common Code ...
 507  *
 508  */
 509 int t4vf_fl_pkt_align(struct adapter *adapter)
 510 {
 511         u32 sge_control, sge_control2;
 512         unsigned int ingpadboundary, ingpackboundary, fl_align, ingpad_shift;
 513
 514         sge_control = adapter->params.sge.sge_control;
 515
 516         /* T4 uses a single control field to specify both the PCIe Padding and
 517          * Packing Boundary.  T5 introduced the ability to specify these
 518          * separately.  The actual Ingress Packet Data alignment boundary
 519          * within Packed Buffer Mode is the maximum of these two
 520          * specifications.  (Note that it makes no real practical sense to
 521          * have the Pading Boudary be larger than the Packing Boundary but you
 522          * could set the chip up that way and, in fact, legacy T4 code would
 523          * end doing this because it would initialize the Padding Boundary and
 524          * leave the Packing Boundary initialized to 0 (16 bytes).)
 525          * Padding Boundary values in T6 starts from 8B,
 526          * where as it is 32B for T4 and T5.
 527          */
 528         if (CHELSIO_CHIP_VERSION(adapter->params.chip) <= CHELSIO_T5)
 529                 ingpad_shift = INGPADBOUNDARY_SHIFT_X;
 530         else
 531                 ingpad_shift = T6_INGPADBOUNDARY_SHIFT_X;
 532
 533         ingpadboundary = 1 << (INGPADBOUNDARY_G(sge_control) + ingpad_shift);
 534
 535         fl_align = ingpadboundary;
 536         if (!is_t4(adapter->params.chip)) {
 537                 /* T5 has a different interpretation of one of the PCIe Packing
 538                  * Boundary values.
 539                  */
 540                 sge_control2 = adapter->params.sge.sge_control2;
 541                 ingpackboundary = INGPACKBOUNDARY_G(sge_control2);
 542                 if (ingpackboundary == INGPACKBOUNDARY_16B_X)
 543                         ingpackboundary = 16;
 544                 else
 545                         ingpackboundary = 1 << (ingpackboundary +
 546                                                 INGPACKBOUNDARY_SHIFT_X);
 547
 548                 fl_align = max(ingpadboundary, ingpackboundary);
 549         }
 550         return fl_align;
 551 }
 552
 553 /**
 554  *      t4vf_bar2_sge_qregs - return BAR2 SGE Queue register information
 555  *      @adapter: the adapter
 556  *      @qid: the Queue ID
 557  *      @qtype: the Ingress or Egress type for @qid
 558  *      @pbar2_qoffset: BAR2 Queue Offset
 559  *      @pbar2_qid: BAR2 Queue ID or 0 for Queue ID inferred SGE Queues
 560  *
 561  *      Returns the BAR2 SGE Queue Registers information associated with the
 562  *      indicated Absolute Queue ID.  These are passed back in return value
 563  *      pointers.  @qtype should be T4_BAR2_QTYPE_EGRESS for Egress Queue
 564  *      and T4_BAR2_QTYPE_INGRESS for Ingress Queues.
 565  *
 566  *      This may return an error which indicates that BAR2 SGE Queue
 567  *      registers aren't available.  If an error is not returned, then the
 568  *      following values are returned:
 569  *
 570  *        *@pbar2_qoffset: the BAR2 Offset of the @qid Registers
 571  *        *@pbar2_qid: the BAR2 SGE Queue ID or 0 of @qid
 572  *
 573  *      If the returned BAR2 Queue ID is 0, then BAR2 SGE registers which
 574  *      require the "Inferred Queue ID" ability may be used.  E.g. the
 575  *      Write Combining Doorbell Buffer. If the BAR2 Queue ID is not 0,
 576  *      then these "Inferred Queue ID" register may not be used.
 577  */
 578 int t4vf_bar2_sge_qregs(struct adapter *adapter,
 579                         unsigned int qid,
 580                         enum t4_bar2_qtype qtype,
 581                         u64 *pbar2_qoffset,
 582                         unsigned int *pbar2_qid)
 583 {
 584         unsigned int page_shift, page_size, qpp_shift, qpp_mask;
 585         u64 bar2_page_offset, bar2_qoffset;
 586         unsigned int bar2_qid, bar2_qid_offset, bar2_qinferred;
 587
 588         /* T4 doesn't support BAR2 SGE Queue registers.
 589          */
 590         if (is_t4(adapter->params.chip))
 591                 return -EINVAL;
 592
 593         /* Get our SGE Page Size parameters.
 594          */
 595         page_shift = adapter->params.sge.sge_vf_hps + 10;
 596         page_size = 1 << page_shift;
 597
 598         /* Get the right Queues per Page parameters for our Queue.
 599          */
 600         qpp_shift = (qtype == T4_BAR2_QTYPE_EGRESS
 601                      ? adapter->params.sge.sge_vf_eq_qpp
 602                      : adapter->params.sge.sge_vf_iq_qpp);
 603         qpp_mask = (1 << qpp_shift) - 1;
 604
 605         /* Calculate the basics of the BAR2 SGE Queue register area:
 606          *  o The BAR2 page the Queue registers will be in.
 607          *  o The BAR2 Queue ID.
 608          *  o The BAR2 Queue ID Offset into the BAR2 page.
 609          */
 610         bar2_page_offset = ((u64)(qid >> qpp_shift) << page_shift);
 611         bar2_qid = qid & qpp_mask;
 612         bar2_qid_offset = bar2_qid * SGE_UDB_SIZE;
 613
 614         /* If the BAR2 Queue ID Offset is less than the Page Size, then the
 615          * hardware will infer the Absolute Queue ID simply from the writes to
 616          * the BAR2 Queue ID Offset within the BAR2 Page (and we need to use a
 617          * BAR2 Queue ID of 0 for those writes).  Otherwise, we'll simply
 618          * write to the first BAR2 SGE Queue Area within the BAR2 Page with
 619          * the BAR2 Queue ID and the hardware will infer the Absolute Queue ID
 620          * from the BAR2 Page and BAR2 Queue ID.
 621          *
 622          * One important censequence of this is that some BAR2 SGE registers
 623          * have a "Queue ID" field and we can write the BAR2 SGE Queue ID
 624          * there.  But other registers synthesize the SGE Queue ID purely
 625          * from the writes to the registers -- the Write Combined Doorbell
 626          * Buffer is a good example.  These BAR2 SGE Registers are only
 627          * available for those BAR2 SGE Register areas where the SGE Absolute
 628          * Queue ID can be inferred from simple writes.
 629          */
 630         bar2_qoffset = bar2_page_offset;
 631         bar2_qinferred = (bar2_qid_offset < page_size);
 632         if (bar2_qinferred) {
 633                 bar2_qoffset += bar2_qid_offset;
 634                 bar2_qid = 0;
 635         }
 636
 637         *pbar2_qoffset = bar2_qoffset;
 638         *pbar2_qid = bar2_qid;
 639         return 0;
 640 }
 641
 642 /**
 643  *      t4vf_get_sge_params - retrieve adapter Scatter gather Engine parameters
 644  *      @adapter: the adapter
 645  *
 646  *      Retrieves various core SGE parameters in the form of hardware SGE
 647  *      register values.  The caller is responsible for decoding these as
 648  *      needed.  The SGE parameters are stored in @adapter->params.sge.
 649  */
 650 int t4vf_get_sge_params(struct adapter *adapter)
 651 {
 652         struct sge_params *sge_params = &adapter->params.sge;
 653         u32 params[7], vals[7];
 654         int v;
 655
 656         params[0] = (FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_REG) |
 657                      FW_PARAMS_PARAM_XYZ_V(SGE_CONTROL_A));
 658         params[1] = (FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_REG) |
 659                      FW_PARAMS_PARAM_XYZ_V(SGE_HOST_PAGE_SIZE_A));
 660         params[2] = (FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_REG) |
 661                      FW_PARAMS_PARAM_XYZ_V(SGE_FL_BUFFER_SIZE0_A));
 662         params[3] = (FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_REG) |
 663                      FW_PARAMS_PARAM_XYZ_V(SGE_FL_BUFFER_SIZE1_A));
 664         params[4] = (FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_REG) |
 665                      FW_PARAMS_PARAM_XYZ_V(SGE_TIMER_VALUE_0_AND_1_A));
 666         params[5] = (FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_REG) |
 667                      FW_PARAMS_PARAM_XYZ_V(SGE_TIMER_VALUE_2_AND_3_A));
 668         params[6] = (FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_REG) |
 669                      FW_PARAMS_PARAM_XYZ_V(SGE_TIMER_VALUE_4_AND_5_A));
 670         v = t4vf_query_params(adapter, 7, params, vals);
 671         if (v)
 672                 return v;
 673         sge_params->sge_control = vals[0];
 674         sge_params->sge_host_page_size = vals[1];
 675         sge_params->sge_fl_buffer_size[0] = vals[2];
 676         sge_params->sge_fl_buffer_size[1] = vals[3];
 677         sge_params->sge_timer_value_0_and_1 = vals[4];
 678         sge_params->sge_timer_value_2_and_3 = vals[5];
 679         sge_params->sge_timer_value_4_and_5 = vals[6];
 680
 681         /* T4 uses a single control field to specify both the PCIe Padding and
 682          * Packing Boundary.  T5 introduced the ability to specify these
 683          * separately with the Padding Boundary in SGE_CONTROL and and Packing
 684          * Boundary in SGE_CONTROL2.  So for T5 and later we need to grab
 685          * SGE_CONTROL in order to determine how ingress packet data will be
 686          * laid out in Packed Buffer Mode.  Unfortunately, older versions of
 687          * the firmware won't let us retrieve SGE_CONTROL2 so if we get a
 688          * failure grabbing it we throw an error since we can't figure out the
 689          * right value.
 690          */
 691         if (!is_t4(adapter->params.chip)) {
 692                 params[0] = (FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_REG) |
 693                              FW_PARAMS_PARAM_XYZ_V(SGE_CONTROL2_A));
 694                 v = t4vf_query_params(adapter, 1, params, vals);
 695                 if (v != FW_SUCCESS) {
 696                         dev_err(adapter->pdev_dev,
 697                                 "Unable to get SGE Control2; "
 698                                 "probably old firmware.\n");
 699                         return v;
 700                 }
 701                 sge_params->sge_control2 = vals[0];
 702         }
 703
 704         params[0] = (FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_REG) |
 705                      FW_PARAMS_PARAM_XYZ_V(SGE_INGRESS_RX_THRESHOLD_A));
 706         params[1] = (FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_REG) |
 707                      FW_PARAMS_PARAM_XYZ_V(SGE_CONM_CTRL_A));
 708         v = t4vf_query_params(adapter, 2, params, vals);
 709         if (v)
 710                 return v;
 711         sge_params->sge_ingress_rx_threshold = vals[0];
 712         sge_params->sge_congestion_control = vals[1];
 713
 714         /* For T5 and later we want to use the new BAR2 Doorbells.
 715          * Unfortunately, older firmware didn't allow the this register to be
 716          * read.
 717          */
 718         if (!is_t4(adapter->params.chip)) {
 719                 u32 whoami;
 720                 unsigned int pf, s_hps, s_qpp;
 721
 722                 params[0] = (FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_REG) |
 723                              FW_PARAMS_PARAM_XYZ_V(
 724                                      SGE_EGRESS_QUEUES_PER_PAGE_VF_A));
 725                 params[1] = (FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_REG) |
 726                              FW_PARAMS_PARAM_XYZ_V(
 727                                      SGE_INGRESS_QUEUES_PER_PAGE_VF_A));
 728                 v = t4vf_query_params(adapter, 2, params, vals);
 729                 if (v != FW_SUCCESS) {
 730                         dev_warn(adapter->pdev_dev,
 731                                  "Unable to get VF SGE Queues/Page; "
 732                                  "probably old firmware.\n");
 733                         return v;
 734                 }
 735                 sge_params->sge_egress_queues_per_page = vals[0];
 736                 sge_params->sge_ingress_queues_per_page = vals[1];
 737
 738                 /* We need the Queues/Page for our VF.  This is based on the
 739                  * PF from which we're instantiated and is indexed in the
 740                  * register we just read. Do it once here so other code in
 741                  * the driver can just use it.
 742                  */
 743                 whoami = t4_read_reg(adapter,
 744                                      T4VF_PL_BASE_ADDR + PL_VF_WHOAMI_A);
 745                 pf = CHELSIO_CHIP_VERSION(adapter->params.chip) <= CHELSIO_T5 ?
 746                         SOURCEPF_G(whoami) : T6_SOURCEPF_G(whoami);
 747
 748                 s_hps = (HOSTPAGESIZEPF0_S +
 749                          (HOSTPAGESIZEPF1_S - HOSTPAGESIZEPF0_S) * pf);
 750                 sge_params->sge_vf_hps =
 751                         ((sge_params->sge_host_page_size >> s_hps)
 752                          & HOSTPAGESIZEPF0_M);
 753
 754                 s_qpp = (QUEUESPERPAGEPF0_S +
 755                          (QUEUESPERPAGEPF1_S - QUEUESPERPAGEPF0_S) * pf);
 756                 sge_params->sge_vf_eq_qpp =
 757                         ((sge_params->sge_egress_queues_per_page >> s_qpp)
 758                          & QUEUESPERPAGEPF0_M);
 759                 sge_params->sge_vf_iq_qpp =
 760                         ((sge_params->sge_ingress_queues_per_page >> s_qpp)
 761                          & QUEUESPERPAGEPF0_M);
 762         }
 763
 764         return 0;
 765 }
 766
 767 /**
 768  *      t4vf_get_vpd_params - retrieve device VPD paremeters
 769  *      @adapter: the adapter
 770  *
 771  *      Retrives various device Vital Product Data parameters.  The parameters
 772  *      are stored in @adapter->params.vpd.
 773  */
 774 int t4vf_get_vpd_params(struct adapter *adapter)
 775 {
 776         struct vpd_params *vpd_params = &adapter->params.vpd;
 777         u32 params[7], vals[7];
 778         int v;
 779
 780         params[0] = (FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_DEV) |
 781                      FW_PARAMS_PARAM_X_V(FW_PARAMS_PARAM_DEV_CCLK));
 782         v = t4vf_query_params(adapter, 1, params, vals);
 783         if (v)
 784                 return v;
 785         vpd_params->cclk = vals[0];
 786
 787         return 0;
 788 }
 789
 790 /**
 791  *      t4vf_get_dev_params - retrieve device paremeters
 792  *      @adapter: the adapter
 793  *
 794  *      Retrives various device parameters.  The parameters are stored in
 795  *      @adapter->params.dev.
 796  */
 797 int t4vf_get_dev_params(struct adapter *adapter)
 798 {
 799         struct dev_params *dev_params = &adapter->params.dev;
 800         u32 params[7], vals[7];
 801         int v;
 802
 803         params[0] = (FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_DEV) |
 804                      FW_PARAMS_PARAM_X_V(FW_PARAMS_PARAM_DEV_FWREV));
 805         params[1] = (FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_DEV) |
 806                      FW_PARAMS_PARAM_X_V(FW_PARAMS_PARAM_DEV_TPREV));
 807         v = t4vf_query_params(adapter, 2, params, vals);
 808         if (v)
 809                 return v;
 810         dev_params->fwrev = vals[0];
 811         dev_params->tprev = vals[1];
 812
 813         return 0;
 814 }
 815
 816 /**
 817  *      t4vf_get_rss_glb_config - retrieve adapter RSS Global Configuration
 818  *      @adapter: the adapter
 819  *
 820  *      Retrieves global RSS mode and parameters with which we have to live
 821  *      and stores them in the @adapter's RSS parameters.
 822  */
 823 int t4vf_get_rss_glb_config(struct adapter *adapter)
 824 {
 825         struct rss_params *rss = &adapter->params.rss;
 826         struct fw_rss_glb_config_cmd cmd, rpl;
 827         int v;
 828
 829         /*
 830          * Execute an RSS Global Configuration read command to retrieve
 831          * our RSS configuration.
 832          */
 833         memset(&cmd, 0, sizeof(cmd));
 834         cmd.op_to_write = cpu_to_be32(FW_CMD_OP_V(FW_RSS_GLB_CONFIG_CMD) |
 835                                       FW_CMD_REQUEST_F |
 836                                       FW_CMD_READ_F);
 837         cmd.retval_len16 = cpu_to_be32(FW_LEN16(cmd));
 838         v = t4vf_wr_mbox(adapter, &cmd, sizeof(cmd), &rpl);
 839         if (v)
 840                 return v;
 841
 842         /*
 843          * Transate the big-endian RSS Global Configuration into our
 844          * cpu-endian format based on the RSS mode.  We also do first level
 845          * filtering at this point to weed out modes which don't support
 846          * VF Drivers ...
 847          */
 848         rss->mode = FW_RSS_GLB_CONFIG_CMD_MODE_G(
 849                         be32_to_cpu(rpl.u.manual.mode_pkd));
 850         switch (rss->mode) {
 851         case FW_RSS_GLB_CONFIG_CMD_MODE_BASICVIRTUAL: {
 852                 u32 word = be32_to_cpu(
 853                                 rpl.u.basicvirtual.synmapen_to_hashtoeplitz);
 854
 855                 rss->u.basicvirtual.synmapen =
 856                         ((word & FW_RSS_GLB_CONFIG_CMD_SYNMAPEN_F) != 0);
 857                 rss->u.basicvirtual.syn4tupenipv6 =
 858                         ((word & FW_RSS_GLB_CONFIG_CMD_SYN4TUPENIPV6_F) != 0);
 859                 rss->u.basicvirtual.syn2tupenipv6 =
 860                         ((word & FW_RSS_GLB_CONFIG_CMD_SYN2TUPENIPV6_F) != 0);
 861                 rss->u.basicvirtual.syn4tupenipv4 =
 862                         ((word & FW_RSS_GLB_CONFIG_CMD_SYN4TUPENIPV4_F) != 0);
 863                 rss->u.basicvirtual.syn2tupenipv4 =
 864                         ((word & FW_RSS_GLB_CONFIG_CMD_SYN2TUPENIPV4_F) != 0);
 865
 866                 rss->u.basicvirtual.ofdmapen =
 867                         ((word & FW_RSS_GLB_CONFIG_CMD_OFDMAPEN_F) != 0);
 868
 869                 rss->u.basicvirtual.tnlmapen =
 870                         ((word & FW_RSS_GLB_CONFIG_CMD_TNLMAPEN_F) != 0);
 871                 rss->u.basicvirtual.tnlalllookup =
 872                         ((word  & FW_RSS_GLB_CONFIG_CMD_TNLALLLKP_F) != 0);
 873
 874                 rss->u.basicvirtual.hashtoeplitz =
 875                         ((word & FW_RSS_GLB_CONFIG_CMD_HASHTOEPLITZ_F) != 0);
 876
 877                 /* we need at least Tunnel Map Enable to be set */
 878                 if (!rss->u.basicvirtual.tnlmapen)
 879                         return -EINVAL;
 880                 break;
 881         }
 882
 883         default:
 884                 /* all unknown/unsupported RSS modes result in an error */
 885                 return -EINVAL;
 886         }
 887
 888         return 0;
 889 }
 890
 891 /**
 892  *      t4vf_get_vfres - retrieve VF resource limits
 893  *      @adapter: the adapter
 894  *
 895  *      Retrieves configured resource limits and capabilities for a virtual
 896  *      function.  The results are stored in @adapter->vfres.
 897  */
 898 int t4vf_get_vfres(struct adapter *adapter)
 899 {
 900         struct vf_resources *vfres = &adapter->params.vfres;
 901         struct fw_pfvf_cmd cmd, rpl;
 902         int v;
 903         u32 word;
 904
 905         /*
 906          * Execute PFVF Read command to get VF resource limits; bail out early
 907          * with error on command failure.
 908          */
 909         memset(&cmd, 0, sizeof(cmd));
 910         cmd.op_to_vfn = cpu_to_be32(FW_CMD_OP_V(FW_PFVF_CMD) |
 911                                     FW_CMD_REQUEST_F |
 912                                     FW_CMD_READ_F);
 913         cmd.retval_len16 = cpu_to_be32(FW_LEN16(cmd));
 914         v = t4vf_wr_mbox(adapter, &cmd, sizeof(cmd), &rpl);
 915         if (v)
 916                 return v;
 917
 918         /*
 919          * Extract VF resource limits and return success.
 920          */
 921         word = be32_to_cpu(rpl.niqflint_niq);
 922         vfres->niqflint = FW_PFVF_CMD_NIQFLINT_G(word);
 923         vfres->niq = FW_PFVF_CMD_NIQ_G(word);
 924
 925         word = be32_to_cpu(rpl.type_to_neq);
 926         vfres->neq = FW_PFVF_CMD_NEQ_G(word);
 927         vfres->pmask = FW_PFVF_CMD_PMASK_G(word);
 928
 929         word = be32_to_cpu(rpl.tc_to_nexactf);
 930         vfres->tc = FW_PFVF_CMD_TC_G(word);
 931         vfres->nvi = FW_PFVF_CMD_NVI_G(word);
 932         vfres->nexactf = FW_PFVF_CMD_NEXACTF_G(word);
 933
 934         word = be32_to_cpu(rpl.r_caps_to_nethctrl);
 935         vfres->r_caps = FW_PFVF_CMD_R_CAPS_G(word);
 936         vfres->wx_caps = FW_PFVF_CMD_WX_CAPS_G(word);
 937         vfres->nethctrl = FW_PFVF_CMD_NETHCTRL_G(word);
 938
 939         return 0;
 940 }
 941
 942 /**
 943  *      t4vf_read_rss_vi_config - read a VI's RSS configuration
 944  *      @adapter: the adapter
 945  *      @viid: Virtual Interface ID
 946  *      @config: pointer to host-native VI RSS Configuration buffer
 947  *
 948  *      Reads the Virtual Interface's RSS configuration information and
 949  *      translates it into CPU-native format.
 950  */
 951 int t4vf_read_rss_vi_config(struct adapter *adapter, unsigned int viid,
 952                             union rss_vi_config *config)
 953 {
 954         struct fw_rss_vi_config_cmd cmd, rpl;
 955         int v;
 956
 957         memset(&cmd, 0, sizeof(cmd));
 958         cmd.op_to_viid = cpu_to_be32(FW_CMD_OP_V(FW_RSS_VI_CONFIG_CMD) |
 959                                      FW_CMD_REQUEST_F |
 960                                      FW_CMD_READ_F |
 961                                      FW_RSS_VI_CONFIG_CMD_VIID(viid));
 962         cmd.retval_len16 = cpu_to_be32(FW_LEN16(cmd));
 963         v = t4vf_wr_mbox(adapter, &cmd, sizeof(cmd), &rpl);
 964         if (v)
 965                 return v;
 966
 967         switch (adapter->params.rss.mode) {
 968         case FW_RSS_GLB_CONFIG_CMD_MODE_BASICVIRTUAL: {
 969                 u32 word = be32_to_cpu(rpl.u.basicvirtual.defaultq_to_udpen);
 970
 971                 config->basicvirtual.ip6fourtupen =
 972                         ((word & FW_RSS_VI_CONFIG_CMD_IP6FOURTUPEN_F) != 0);
 973                 config->basicvirtual.ip6twotupen =
 974                         ((word & FW_RSS_VI_CONFIG_CMD_IP6TWOTUPEN_F) != 0);
 975                 config->basicvirtual.ip4fourtupen =
 976                         ((word & FW_RSS_VI_CONFIG_CMD_IP4FOURTUPEN_F) != 0);
 977                 config->basicvirtual.ip4twotupen =
 978                         ((word & FW_RSS_VI_CONFIG_CMD_IP4TWOTUPEN_F) != 0);
 979                 config->basicvirtual.udpen =
 980                         ((word & FW_RSS_VI_CONFIG_CMD_UDPEN_F) != 0);
 981                 config->basicvirtual.defaultq =
 982                         FW_RSS_VI_CONFIG_CMD_DEFAULTQ_G(word);
 983                 break;
 984         }
 985
 986         default:
 987                 return -EINVAL;
 988         }
 989
 990         return 0;
 991 }
 992
 993 /**
 994  *      t4vf_write_rss_vi_config - write a VI's RSS configuration
 995  *      @adapter: the adapter
 996  *      @viid: Virtual Interface ID
 997  *      @config: pointer to host-native VI RSS Configuration buffer
 998  *
 999  *      Write the Virtual Interface's RSS configuration information
1000  *      (translating it into firmware-native format before writing).
1001  */
1002 int t4vf_write_rss_vi_config(struct adapter *adapter, unsigned int viid,
1003                              union rss_vi_config *config)
1004 {
1005         struct fw_rss_vi_config_cmd cmd, rpl;
1006
1007         memset(&cmd, 0, sizeof(cmd));
1008         cmd.op_to_viid = cpu_to_be32(FW_CMD_OP_V(FW_RSS_VI_CONFIG_CMD) |
1009                                      FW_CMD_REQUEST_F |
1010                                      FW_CMD_WRITE_F |
1011                                      FW_RSS_VI_CONFIG_CMD_VIID(viid));
1012         cmd.retval_len16 = cpu_to_be32(FW_LEN16(cmd));
1013         switch (adapter->params.rss.mode) {
1014         case FW_RSS_GLB_CONFIG_CMD_MODE_BASICVIRTUAL: {
1015                 u32 word = 0;
1016
1017                 if (config->basicvirtual.ip6fourtupen)
1018                         word |= FW_RSS_VI_CONFIG_CMD_IP6FOURTUPEN_F;
1019                 if (config->basicvirtual.ip6twotupen)
1020                         word |= FW_RSS_VI_CONFIG_CMD_IP6TWOTUPEN_F;
1021                 if (config->basicvirtual.ip4fourtupen)
1022                         word |= FW_RSS_VI_CONFIG_CMD_IP4FOURTUPEN_F;
1023                 if (config->basicvirtual.ip4twotupen)
1024                         word |= FW_RSS_VI_CONFIG_CMD_IP4TWOTUPEN_F;
1025                 if (config->basicvirtual.udpen)
1026                         word |= FW_RSS_VI_CONFIG_CMD_UDPEN_F;
1027                 word |= FW_RSS_VI_CONFIG_CMD_DEFAULTQ_V(
1028                                 config->basicvirtual.defaultq);
1029                 cmd.u.basicvirtual.defaultq_to_udpen = cpu_to_be32(word);
1030                 break;
1031         }
1032
1033         default:
1034                 return -EINVAL;
1035         }
1036
1037         return t4vf_wr_mbox(adapter, &cmd, sizeof(cmd), &rpl);
1038 }
1039
1040 /**
1041  *      t4vf_config_rss_range - configure a portion of the RSS mapping table
1042  *      @adapter: the adapter
1043  *      @viid: Virtual Interface of RSS Table Slice
1044  *      @start: starting entry in the table to write
1045  *      @n: how many table entries to write
1046  *      @rspq: values for the "Response Queue" (Ingress Queue) lookup table
1047  *      @nrspq: number of values in @rspq
1048  *
1049  *      Programs the selected part of the VI's RSS mapping table with the
1050  *      provided values.  If @nrspq < @n the supplied values are used repeatedly
1051  *      until the full table range is populated.
1052  *
1053  *      The caller must ensure the values in @rspq are in the range 0..1023.
1054  */
1055 int t4vf_config_rss_range(struct adapter *adapter, unsigned int viid,
1056                           int start, int n, const u16 *rspq, int nrspq)
1057 {
1058         const u16 *rsp = rspq;
1059         const u16 *rsp_end = rspq+nrspq;
1060         struct fw_rss_ind_tbl_cmd cmd;
1061
1062         /*
1063          * Initialize firmware command template to write the RSS table.
1064          */
1065         memset(&cmd, 0, sizeof(cmd));
1066         cmd.op_to_viid = cpu_to_be32(FW_CMD_OP_V(FW_RSS_IND_TBL_CMD) |
1067                                      FW_CMD_REQUEST_F |
1068                                      FW_CMD_WRITE_F |
1069                                      FW_RSS_IND_TBL_CMD_VIID_V(viid));
1070         cmd.retval_len16 = cpu_to_be32(FW_LEN16(cmd));
1071
1072         /*
1073          * Each firmware RSS command can accommodate up to 32 RSS Ingress
1074          * Queue Identifiers.  These Ingress Queue IDs are packed three to
1075          * a 32-bit word as 10-bit values with the upper remaining 2 bits
1076          * reserved.
1077          */
1078         while (n > 0) {
1079                 __be32 *qp = &cmd.iq0_to_iq2;
1080                 int nq = min(n, 32);
1081                 int ret;
1082
1083                 /*
1084                  * Set up the firmware RSS command header to send the next
1085                  * "nq" Ingress Queue IDs to the firmware.
1086                  */
1087                 cmd.niqid = cpu_to_be16(nq);
1088                 cmd.startidx = cpu_to_be16(start);
1089
1090                 /*
1091                  * "nq" more done for the start of the next loop.
1092                  */
1093                 start += nq;
1094                 n -= nq;
1095
1096                 /*
1097                  * While there are still Ingress Queue IDs to stuff into the
1098                  * current firmware RSS command, retrieve them from the
1099                  * Ingress Queue ID array and insert them into the command.
1100                  */
1101                 while (nq > 0) {
1102                         /*
1103                          * Grab up to the next 3 Ingress Queue IDs (wrapping
1104                          * around the Ingress Queue ID array if necessary) and
1105                          * insert them into the firmware RSS command at the
1106                          * current 3-tuple position within the commad.
1107                          */
1108                         u16 qbuf[3];
1109                         u16 *qbp = qbuf;
1110                         int nqbuf = min(3, nq);
1111
1112                         nq -= nqbuf;
1113                         qbuf[0] = qbuf[1] = qbuf[2] = 0;
1114                         while (nqbuf) {
1115                                 nqbuf--;
1116                                 *qbp++ = *rsp++;
1117                                 if (rsp >= rsp_end)
1118                                         rsp = rspq;
1119                         }
1120                         *qp++ = cpu_to_be32(FW_RSS_IND_TBL_CMD_IQ0_V(qbuf[0]) |
1121                                             FW_RSS_IND_TBL_CMD_IQ1_V(qbuf[1]) |
1122                                             FW_RSS_IND_TBL_CMD_IQ2_V(qbuf[2]));
1123                 }
1124
1125                 /*
1126                  * Send this portion of the RRS table update to the firmware;
1127                  * bail out on any errors.
1128                  */
1129                 ret = t4vf_wr_mbox(adapter, &cmd, sizeof(cmd), NULL);
1130                 if (ret)
1131                         return ret;
1132         }
1133         return 0;
1134 }
1135
1136 /**
1137  *      t4vf_alloc_vi - allocate a virtual interface on a port
1138  *      @adapter: the adapter
1139  *      @port_id: physical port associated with the VI
1140  *
1141  *      Allocate a new Virtual Interface and bind it to the indicated
1142  *      physical port.  Return the new Virtual Interface Identifier on
1143  *      success, or a [negative] error number on failure.
1144  */
1145 int t4vf_alloc_vi(struct adapter *adapter, int port_id)
1146 {
1147         struct fw_vi_cmd cmd, rpl;
1148         int v;
1149
1150         /*
1151          * Execute a VI command to allocate Virtual Interface and return its
1152          * VIID.
1153          */
1154         memset(&cmd, 0, sizeof(cmd));
1155         cmd.op_to_vfn = cpu_to_be32(FW_CMD_OP_V(FW_VI_CMD) |
1156                                     FW_CMD_REQUEST_F |
1157                                     FW_CMD_WRITE_F |
1158                                     FW_CMD_EXEC_F);
1159         cmd.alloc_to_len16 = cpu_to_be32(FW_LEN16(cmd) |
1160                                          FW_VI_CMD_ALLOC_F);
1161         cmd.portid_pkd = FW_VI_CMD_PORTID_V(port_id);
1162         v = t4vf_wr_mbox(adapter, &cmd, sizeof(cmd), &rpl);
1163         if (v)
1164                 return v;
1165
1166         return FW_VI_CMD_VIID_G(be16_to_cpu(rpl.type_viid));
1167 }
1168
1169 /**
1170  *      t4vf_free_vi -- free a virtual interface
1171  *      @adapter: the adapter
1172  *      @viid: the virtual interface identifier
1173  *
1174  *      Free a previously allocated Virtual Interface.  Return an error on
1175  *      failure.
1176  */
1177 int t4vf_free_vi(struct adapter *adapter, int viid)
1178 {
1179         struct fw_vi_cmd cmd;
1180
1181         /*
1182          * Execute a VI command to free the Virtual Interface.
1183          */
1184         memset(&cmd, 0, sizeof(cmd));
1185         cmd.op_to_vfn = cpu_to_be32(FW_CMD_OP_V(FW_VI_CMD) |
1186                                     FW_CMD_REQUEST_F |
1187                                     FW_CMD_EXEC_F);
1188         cmd.alloc_to_len16 = cpu_to_be32(FW_LEN16(cmd) |
1189                                          FW_VI_CMD_FREE_F);
1190         cmd.type_viid = cpu_to_be16(FW_VI_CMD_VIID_V(viid));
1191         return t4vf_wr_mbox(adapter, &cmd, sizeof(cmd), NULL);
1192 }
1193
1194 /**
1195  *      t4vf_enable_vi - enable/disable a virtual interface
1196  *      @adapter: the adapter
1197  *      @viid: the Virtual Interface ID
1198  *      @rx_en: 1=enable Rx, 0=disable Rx
1199  *      @tx_en: 1=enable Tx, 0=disable Tx
1200  *
1201  *      Enables/disables a virtual interface.
1202  */
1203 int t4vf_enable_vi(struct adapter *adapter, unsigned int viid,
1204                    bool rx_en, bool tx_en)
1205 {
1206         struct fw_vi_enable_cmd cmd;
1207
1208         memset(&cmd, 0, sizeof(cmd));
1209         cmd.op_to_viid = cpu_to_be32(FW_CMD_OP_V(FW_VI_ENABLE_CMD) |
1210                                      FW_CMD_REQUEST_F |
1211                                      FW_CMD_EXEC_F |
1212                                      FW_VI_ENABLE_CMD_VIID_V(viid));
1213         cmd.ien_to_len16 = cpu_to_be32(FW_VI_ENABLE_CMD_IEN_V(rx_en) |
1214                                        FW_VI_ENABLE_CMD_EEN_V(tx_en) |
1215                                        FW_LEN16(cmd));
1216         return t4vf_wr_mbox(adapter, &cmd, sizeof(cmd), NULL);
1217 }
1218
1219 /**
1220  *      t4vf_identify_port - identify a VI's port by blinking its LED
1221  *      @adapter: the adapter
1222  *      @viid: the Virtual Interface ID
1223  *      @nblinks: how many times to blink LED at 2.5 Hz
1224  *
1225  *      Identifies a VI's port by blinking its LED.
1226  */
1227 int t4vf_identify_port(struct adapter *adapter, unsigned int viid,
1228                        unsigned int nblinks)
1229 {
1230         struct fw_vi_enable_cmd cmd;
1231
1232         memset(&cmd, 0, sizeof(cmd));
1233         cmd.op_to_viid = cpu_to_be32(FW_CMD_OP_V(FW_VI_ENABLE_CMD) |
1234                                      FW_CMD_REQUEST_F |
1235                                      FW_CMD_EXEC_F |
1236                                      FW_VI_ENABLE_CMD_VIID_V(viid));
1237         cmd.ien_to_len16 = cpu_to_be32(FW_VI_ENABLE_CMD_LED_F |
1238                                        FW_LEN16(cmd));
1239         cmd.blinkdur = cpu_to_be16(nblinks);
1240         return t4vf_wr_mbox(adapter, &cmd, sizeof(cmd), NULL);
1241 }
1242
1243 /**
1244  *      t4vf_set_rxmode - set Rx properties of a virtual interface
1245  *      @adapter: the adapter
1246  *      @viid: the VI id
1247  *      @mtu: the new MTU or -1 for no change
1248  *      @promisc: 1 to enable promiscuous mode, 0 to disable it, -1 no change
1249  *      @all_multi: 1 to enable all-multi mode, 0 to disable it, -1 no change
1250  *      @bcast: 1 to enable broadcast Rx, 0 to disable it, -1 no change
1251  *      @vlanex: 1 to enable hardware VLAN Tag extraction, 0 to disable it,
1252  *              -1 no change
1253  *
1254  *      Sets Rx properties of a virtual interface.
1255  */
1256 int t4vf_set_rxmode(struct adapter *adapter, unsigned int viid,
1257                     int mtu, int promisc, int all_multi, int bcast, int vlanex,
1258                     bool sleep_ok)
1259 {
1260         struct fw_vi_rxmode_cmd cmd;
1261
1262         /* convert to FW values */
1263         if (mtu < 0)
1264                 mtu = FW_VI_RXMODE_CMD_MTU_M;
1265         if (promisc < 0)
1266                 promisc = FW_VI_RXMODE_CMD_PROMISCEN_M;
1267         if (all_multi < 0)
1268                 all_multi = FW_VI_RXMODE_CMD_ALLMULTIEN_M;
1269         if (bcast < 0)
1270                 bcast = FW_VI_RXMODE_CMD_BROADCASTEN_M;
1271         if (vlanex < 0)
1272                 vlanex = FW_VI_RXMODE_CMD_VLANEXEN_M;
1273
1274         memset(&cmd, 0, sizeof(cmd));
1275         cmd.op_to_viid = cpu_to_be32(FW_CMD_OP_V(FW_VI_RXMODE_CMD) |
1276                                      FW_CMD_REQUEST_F |
1277                                      FW_CMD_WRITE_F |
1278                                      FW_VI_RXMODE_CMD_VIID_V(viid));
1279         cmd.retval_len16 = cpu_to_be32(FW_LEN16(cmd));
1280         cmd.mtu_to_vlanexen =
1281                 cpu_to_be32(FW_VI_RXMODE_CMD_MTU_V(mtu) |
1282                             FW_VI_RXMODE_CMD_PROMISCEN_V(promisc) |
1283                             FW_VI_RXMODE_CMD_ALLMULTIEN_V(all_multi) |
1284                             FW_VI_RXMODE_CMD_BROADCASTEN_V(bcast) |
1285                             FW_VI_RXMODE_CMD_VLANEXEN_V(vlanex));
1286         return t4vf_wr_mbox_core(adapter, &cmd, sizeof(cmd), NULL, sleep_ok);
1287 }
1288
1289 /**
1290  *      t4vf_alloc_mac_filt - allocates exact-match filters for MAC addresses
1291  *      @adapter: the adapter
1292  *      @viid: the Virtual Interface Identifier
1293  *      @free: if true any existing filters for this VI id are first removed
1294  *      @naddr: the number of MAC addresses to allocate filters for (up to 7)
1295  *      @addr: the MAC address(es)
1296  *      @idx: where to store the index of each allocated filter
1297  *      @hash: pointer to hash address filter bitmap
1298  *      @sleep_ok: call is allowed to sleep
1299  *
1300  *      Allocates an exact-match filter for each of the supplied addresses and
1301  *      sets it to the corresponding address.  If @idx is not %NULL it should
1302  *      have at least @naddr entries, each of which will be set to the index of
1303  *      the filter allocated for the corresponding MAC address.  If a filter
1304  *      could not be allocated for an address its index is set to 0xffff.
1305  *      If @hash is not %NULL addresses that fail to allocate an exact filter
1306  *      are hashed and update the hash filter bitmap pointed at by @hash.
1307  *
1308  *      Returns a negative error number or the number of filters allocated.
1309  */
1310 int t4vf_alloc_mac_filt(struct adapter *adapter, unsigned int viid, bool free,
1311                         unsigned int naddr, const u8 **addr, u16 *idx,
1312                         u64 *hash, bool sleep_ok)
1313 {
1314         int offset, ret = 0;
1315         unsigned nfilters = 0;
1316         unsigned int rem = naddr;
1317         struct fw_vi_mac_cmd cmd, rpl;
1318         unsigned int max_naddr = adapter->params.arch.mps_tcam_size;
1319
1320         if (naddr > max_naddr)
1321                 return -EINVAL;
1322
1323         for (offset = 0; offset < naddr; /**/) {
1324                 unsigned int fw_naddr = (rem < ARRAY_SIZE(cmd.u.exact)
1325                                          ? rem
1326                                          : ARRAY_SIZE(cmd.u.exact));
1327                 size_t len16 = DIV_ROUND_UP(offsetof(struct fw_vi_mac_cmd,
1328                                                      u.exact[fw_naddr]), 16);
1329                 struct fw_vi_mac_exact *p;
1330                 int i;
1331
1332                 memset(&cmd, 0, sizeof(cmd));
1333                 cmd.op_to_viid = cpu_to_be32(FW_CMD_OP_V(FW_VI_MAC_CMD) |
1334                                              FW_CMD_REQUEST_F |
1335                                              FW_CMD_WRITE_F |
1336                                              (free ? FW_CMD_EXEC_F : 0) |
1337                                              FW_VI_MAC_CMD_VIID_V(viid));
1338                 cmd.freemacs_to_len16 =
1339                         cpu_to_be32(FW_VI_MAC_CMD_FREEMACS_V(free) |
1340                                     FW_CMD_LEN16_V(len16));
1341
1342                 for (i = 0, p = cmd.u.exact; i < fw_naddr; i++, p++) {
1343                         p->valid_to_idx = cpu_to_be16(
1344                                 FW_VI_MAC_CMD_VALID_F |
1345                                 FW_VI_MAC_CMD_IDX_V(FW_VI_MAC_ADD_MAC));
1346                         memcpy(p->macaddr, addr[offset+i], sizeof(p->macaddr));
1347                 }
1348
1349
1350                 ret = t4vf_wr_mbox_core(adapter, &cmd, sizeof(cmd), &rpl,
1351                                         sleep_ok);
1352                 if (ret && ret != -ENOMEM)
1353                         break;
1354
1355                 for (i = 0, p = rpl.u.exact; i < fw_naddr; i++, p++) {
1356                         u16 index = FW_VI_MAC_CMD_IDX_G(
1357                                 be16_to_cpu(p->valid_to_idx));
1358
1359                         if (idx)
1360                                 idx[offset+i] =
1361                                         (index >= max_naddr
1362                                          ? 0xffff
1363                                          : index);
1364                         if (index < max_naddr)
1365                                 nfilters++;
1366                         else if (hash)
1367                                 *hash |= (1ULL << hash_mac_addr(addr[offset+i]));
1368                 }
1369
1370                 free = false;
1371                 offset += fw_naddr;
1372                 rem -= fw_naddr;
1373         }
1374
1375         /*
1376          * If there were no errors or we merely ran out of room in our MAC
1377          * address arena, return the number of filters actually written.
1378          */
1379         if (ret == 0 || ret == -ENOMEM)
1380                 ret = nfilters;
1381         return ret;
1382 }
1383
1384 /**
1385  *      t4vf_free_mac_filt - frees exact-match filters of given MAC addresses
1386  *      @adapter: the adapter
1387  *      @viid: the VI id
1388  *      @naddr: the number of MAC addresses to allocate filters for (up to 7)
1389  *      @addr: the MAC address(es)
1390  *      @sleep_ok: call is allowed to sleep
1391  *
1392  *      Frees the exact-match filter for each of the supplied addresses
1393  *
1394  *      Returns a negative error number or the number of filters freed.
1395  */
1396 int t4vf_free_mac_filt(struct adapter *adapter, unsigned int viid,
1397                        unsigned int naddr, const u8 **addr, bool sleep_ok)
1398 {
1399         int offset, ret = 0;
1400         struct fw_vi_mac_cmd cmd;
1401         unsigned int nfilters = 0;
1402         unsigned int max_naddr = adapter->params.arch.mps_tcam_size;
1403         unsigned int rem = naddr;
1404
1405         if (naddr > max_naddr)
1406                 return -EINVAL;
1407
1408         for (offset = 0; offset < (int)naddr ; /**/) {
1409                 unsigned int fw_naddr = (rem < ARRAY_SIZE(cmd.u.exact) ?
1410                                          rem : ARRAY_SIZE(cmd.u.exact));
1411                 size_t len16 = DIV_ROUND_UP(offsetof(struct fw_vi_mac_cmd,
1412                                                      u.exact[fw_naddr]), 16);
1413                 struct fw_vi_mac_exact *p;
1414                 int i;
1415
1416                 memset(&cmd, 0, sizeof(cmd));
1417                 cmd.op_to_viid = cpu_to_be32(FW_CMD_OP_V(FW_VI_MAC_CMD) |
1418                                      FW_CMD_REQUEST_F |
1419                                      FW_CMD_WRITE_F |
1420                                      FW_CMD_EXEC_V(0) |
1421                                      FW_VI_MAC_CMD_VIID_V(viid));
1422                 cmd.freemacs_to_len16 =
1423                                 cpu_to_be32(FW_VI_MAC_CMD_FREEMACS_V(0) |
1424                                             FW_CMD_LEN16_V(len16));
1425
1426                 for (i = 0, p = cmd.u.exact; i < (int)fw_naddr; i++, p++) {
1427                         p->valid_to_idx = cpu_to_be16(
1428                                 FW_VI_MAC_CMD_VALID_F |
1429                                 FW_VI_MAC_CMD_IDX_V(FW_VI_MAC_MAC_BASED_FREE));
1430                         memcpy(p->macaddr, addr[offset+i], sizeof(p->macaddr));
1431                 }
1432
1433                 ret = t4vf_wr_mbox_core(adapter, &cmd, sizeof(cmd), &cmd,
1434                                         sleep_ok);
1435                 if (ret)
1436                         break;
1437
1438                 for (i = 0, p = cmd.u.exact; i < fw_naddr; i++, p++) {
1439                         u16 index = FW_VI_MAC_CMD_IDX_G(
1440                                                 be16_to_cpu(p->valid_to_idx));
1441
1442                         if (index < max_naddr)
1443                                 nfilters++;
1444                 }
1445
1446                 offset += fw_naddr;
1447                 rem -= fw_naddr;
1448         }
1449
1450         if (ret == 0)
1451                 ret = nfilters;
1452         return ret;
1453 }
1454
1455 /**
1456  *      t4vf_change_mac - modifies the exact-match filter for a MAC address
1457  *      @adapter: the adapter
1458  *      @viid: the Virtual Interface ID
1459  *      @idx: index of existing filter for old value of MAC address, or -1
1460  *      @addr: the new MAC address value
1461  *      @persist: if idx < 0, the new MAC allocation should be persistent
1462  *
1463  *      Modifies an exact-match filter and sets it to the new MAC address.
1464  *      Note that in general it is not possible to modify the value of a given
1465  *      filter so the generic way to modify an address filter is to free the
1466  *      one being used by the old address value and allocate a new filter for
1467  *      the new address value.  @idx can be -1 if the address is a new
1468  *      addition.
1469  *
1470  *      Returns a negative error number or the index of the filter with the new
1471  *      MAC value.
1472  */
1473 int t4vf_change_mac(struct adapter *adapter, unsigned int viid,
1474                     int idx, const u8 *addr, bool persist)
1475 {
1476         int ret;
1477         struct fw_vi_mac_cmd cmd, rpl;
1478         struct fw_vi_mac_exact *p = &cmd.u.exact[0];
1479         size_t len16 = DIV_ROUND_UP(offsetof(struct fw_vi_mac_cmd,
1480                                              u.exact[1]), 16);
1481         unsigned int max_mac_addr = adapter->params.arch.mps_tcam_size;
1482
1483         /*
1484          * If this is a new allocation, determine whether it should be
1485          * persistent (across a "freemacs" operation) or not.
1486          */
1487         if (idx < 0)
1488                 idx = persist ? FW_VI_MAC_ADD_PERSIST_MAC : FW_VI_MAC_ADD_MAC;
1489
1490         memset(&cmd, 0, sizeof(cmd));
1491         cmd.op_to_viid = cpu_to_be32(FW_CMD_OP_V(FW_VI_MAC_CMD) |
1492                                      FW_CMD_REQUEST_F |
1493                                      FW_CMD_WRITE_F |
1494                                      FW_VI_MAC_CMD_VIID_V(viid));
1495         cmd.freemacs_to_len16 = cpu_to_be32(FW_CMD_LEN16_V(len16));
1496         p->valid_to_idx = cpu_to_be16(FW_VI_MAC_CMD_VALID_F |
1497                                       FW_VI_MAC_CMD_IDX_V(idx));
1498         memcpy(p->macaddr, addr, sizeof(p->macaddr));
1499
1500         ret = t4vf_wr_mbox(adapter, &cmd, sizeof(cmd), &rpl);
1501         if (ret == 0) {
1502                 p = &rpl.u.exact[0];
1503                 ret = FW_VI_MAC_CMD_IDX_G(be16_to_cpu(p->valid_to_idx));
1504                 if (ret >= max_mac_addr)
1505                         ret = -ENOMEM;
1506         }
1507         return ret;
1508 }
1509
1510 /**
1511  *      t4vf_set_addr_hash - program the MAC inexact-match hash filter
1512  *      @adapter: the adapter
1513  *      @viid: the Virtual Interface Identifier
1514  *      @ucast: whether the hash filter should also match unicast addresses
1515  *      @vec: the value to be written to the hash filter
1516  *      @sleep_ok: call is allowed to sleep
1517  *
1518  *      Sets the 64-bit inexact-match hash filter for a virtual interface.
1519  */
1520 int t4vf_set_addr_hash(struct adapter *adapter, unsigned int viid,
1521                        bool ucast, u64 vec, bool sleep_ok)
1522 {
1523         struct fw_vi_mac_cmd cmd;
1524         size_t len16 = DIV_ROUND_UP(offsetof(struct fw_vi_mac_cmd,
1525                                              u.exact[0]), 16);
1526
1527         memset(&cmd, 0, sizeof(cmd));
1528         cmd.op_to_viid = cpu_to_be32(FW_CMD_OP_V(FW_VI_MAC_CMD) |
1529                                      FW_CMD_REQUEST_F |
1530                                      FW_CMD_WRITE_F |
1531                                      FW_VI_ENABLE_CMD_VIID_V(viid));
1532         cmd.freemacs_to_len16 = cpu_to_be32(FW_VI_MAC_CMD_HASHVECEN_F |
1533                                             FW_VI_MAC_CMD_HASHUNIEN_V(ucast) |
1534                                             FW_CMD_LEN16_V(len16));
1535         cmd.u.hash.hashvec = cpu_to_be64(vec);
1536         return t4vf_wr_mbox_core(adapter, &cmd, sizeof(cmd), NULL, sleep_ok);
1537 }
1538
1539 /**
1540  *      t4vf_get_port_stats - collect "port" statistics
1541  *      @adapter: the adapter
1542  *      @pidx: the port index
1543  *      @s: the stats structure to fill
1544  *
1545  *      Collect statistics for the "port"'s Virtual Interface.
1546  */
1547 int t4vf_get_port_stats(struct adapter *adapter, int pidx,
1548                         struct t4vf_port_stats *s)
1549 {
1550         struct port_info *pi = adap2pinfo(adapter, pidx);
1551         struct fw_vi_stats_vf fwstats;
1552         unsigned int rem = VI_VF_NUM_STATS;
1553         __be64 *fwsp = (__be64 *)&fwstats;
1554
1555         /*
1556          * Grab the Virtual Interface statistics a chunk at a time via mailbox
1557          * commands.  We could use a Work Request and get all of them at once
1558          * but that's an asynchronous interface which is awkward to use.
1559          */
1560         while (rem) {
1561                 unsigned int ix = VI_VF_NUM_STATS - rem;
1562                 unsigned int nstats = min(6U, rem);
1563                 struct fw_vi_stats_cmd cmd, rpl;
1564                 size_t len = (offsetof(struct fw_vi_stats_cmd, u) +
1565                               sizeof(struct fw_vi_stats_ctl));
1566                 size_t len16 = DIV_ROUND_UP(len, 16);
1567                 int ret;
1568
1569                 memset(&cmd, 0, sizeof(cmd));
1570                 cmd.op_to_viid = cpu_to_be32(FW_CMD_OP_V(FW_VI_STATS_CMD) |
1571                                              FW_VI_STATS_CMD_VIID_V(pi->viid) |
1572                                              FW_CMD_REQUEST_F |
1573                                              FW_CMD_READ_F);
1574                 cmd.retval_len16 = cpu_to_be32(FW_CMD_LEN16_V(len16));
1575                 cmd.u.ctl.nstats_ix =
1576                         cpu_to_be16(FW_VI_STATS_CMD_IX_V(ix) |
1577                                     FW_VI_STATS_CMD_NSTATS_V(nstats));
1578                 ret = t4vf_wr_mbox_ns(adapter, &cmd, len, &rpl);
1579                 if (ret)
1580                         return ret;
1581
1582                 memcpy(fwsp, &rpl.u.ctl.stat0, sizeof(__be64) * nstats);
1583
1584                 rem -= nstats;
1585                 fwsp += nstats;
1586         }
1587
1588         /*
1589          * Translate firmware statistics into host native statistics.
1590          */
1591         s->tx_bcast_bytes = be64_to_cpu(fwstats.tx_bcast_bytes);
1592         s->tx_bcast_frames = be64_to_cpu(fwstats.tx_bcast_frames);
1593         s->tx_mcast_bytes = be64_to_cpu(fwstats.tx_mcast_bytes);
1594         s->tx_mcast_frames = be64_to_cpu(fwstats.tx_mcast_frames);
1595         s->tx_ucast_bytes = be64_to_cpu(fwstats.tx_ucast_bytes);
1596         s->tx_ucast_frames = be64_to_cpu(fwstats.tx_ucast_frames);
1597         s->tx_drop_frames = be64_to_cpu(fwstats.tx_drop_frames);
1598         s->tx_offload_bytes = be64_to_cpu(fwstats.tx_offload_bytes);
1599         s->tx_offload_frames = be64_to_cpu(fwstats.tx_offload_frames);
1600
1601         s->rx_bcast_bytes = be64_to_cpu(fwstats.rx_bcast_bytes);
1602         s->rx_bcast_frames = be64_to_cpu(fwstats.rx_bcast_frames);
1603         s->rx_mcast_bytes = be64_to_cpu(fwstats.rx_mcast_bytes);
1604         s->rx_mcast_frames = be64_to_cpu(fwstats.rx_mcast_frames);
1605         s->rx_ucast_bytes = be64_to_cpu(fwstats.rx_ucast_bytes);
1606         s->rx_ucast_frames = be64_to_cpu(fwstats.rx_ucast_frames);
1607
1608         s->rx_err_frames = be64_to_cpu(fwstats.rx_err_frames);
1609
1610         return 0;
1611 }
1612
1613 /**
1614  *      t4vf_iq_free - free an ingress queue and its free lists
1615  *      @adapter: the adapter
1616  *      @iqtype: the ingress queue type (FW_IQ_TYPE_FL_INT_CAP, etc.)
1617  *      @iqid: ingress queue ID
1618  *      @fl0id: FL0 queue ID or 0xffff if no attached FL0
1619  *      @fl1id: FL1 queue ID or 0xffff if no attached FL1
1620  *
1621  *      Frees an ingress queue and its associated free lists, if any.
1622  */
1623 int t4vf_iq_free(struct adapter *adapter, unsigned int iqtype,
1624                  unsigned int iqid, unsigned int fl0id, unsigned int fl1id)
1625 {
1626         struct fw_iq_cmd cmd;
1627
1628         memset(&cmd, 0, sizeof(cmd));
1629         cmd.op_to_vfn = cpu_to_be32(FW_CMD_OP_V(FW_IQ_CMD) |
1630                                     FW_CMD_REQUEST_F |
1631                                     FW_CMD_EXEC_F);
1632         cmd.alloc_to_len16 = cpu_to_be32(FW_IQ_CMD_FREE_F |
1633                                          FW_LEN16(cmd));
1634         cmd.type_to_iqandstindex =
1635                 cpu_to_be32(FW_IQ_CMD_TYPE_V(iqtype));
1636
1637         cmd.iqid = cpu_to_be16(iqid);
1638         cmd.fl0id = cpu_to_be16(fl0id);
1639         cmd.fl1id = cpu_to_be16(fl1id);
1640         return t4vf_wr_mbox(adapter, &cmd, sizeof(cmd), NULL);
1641 }
1642
1643 /**
1644  *      t4vf_eth_eq_free - free an Ethernet egress queue
1645  *      @adapter: the adapter
1646  *      @eqid: egress queue ID
1647  *
1648  *      Frees an Ethernet egress queue.
1649  */
1650 int t4vf_eth_eq_free(struct adapter *adapter, unsigned int eqid)
1651 {
1652         struct fw_eq_eth_cmd cmd;
1653
1654         memset(&cmd, 0, sizeof(cmd));
1655         cmd.op_to_vfn = cpu_to_be32(FW_CMD_OP_V(FW_EQ_ETH_CMD) |
1656                                     FW_CMD_REQUEST_F |
1657                                     FW_CMD_EXEC_F);
1658         cmd.alloc_to_len16 = cpu_to_be32(FW_EQ_ETH_CMD_FREE_F |
1659                                          FW_LEN16(cmd));
1660         cmd.eqid_pkd = cpu_to_be32(FW_EQ_ETH_CMD_EQID_V(eqid));
1661         return t4vf_wr_mbox(adapter, &cmd, sizeof(cmd), NULL);
1662 }
1663
1664 /**
1665  *      t4vf_handle_fw_rpl - process a firmware reply message
1666  *      @adapter: the adapter
1667  *      @rpl: start of the firmware message
1668  *
1669  *      Processes a firmware message, such as link state change messages.
1670  */
1671 int t4vf_handle_fw_rpl(struct adapter *adapter, const __be64 *rpl)
1672 {
1673         const struct fw_cmd_hdr *cmd_hdr = (const struct fw_cmd_hdr *)rpl;
1674         u8 opcode = FW_CMD_OP_G(be32_to_cpu(cmd_hdr->hi));
1675
1676         switch (opcode) {
1677         case FW_PORT_CMD: {
1678                 /*
1679                  * Link/module state change message.
1680                  */
1681                 const struct fw_port_cmd *port_cmd =
1682                         (const struct fw_port_cmd *)rpl;
1683                 u32 stat, mod;
1684                 int action, port_id, link_ok, speed, fc, pidx;
1685
1686                 /*
1687                  * Extract various fields from port status change message.
1688                  */
1689                 action = FW_PORT_CMD_ACTION_G(
1690                         be32_to_cpu(port_cmd->action_to_len16));
1691                 if (action != FW_PORT_ACTION_GET_PORT_INFO) {
1692                         dev_err(adapter->pdev_dev,
1693                                 "Unknown firmware PORT reply action %x\n",
1694                                 action);
1695                         break;
1696                 }
1697
1698                 port_id = FW_PORT_CMD_PORTID_G(
1699                         be32_to_cpu(port_cmd->op_to_portid));
1700
1701                 stat = be32_to_cpu(port_cmd->u.info.lstatus_to_modtype);
1702                 link_ok = (stat & FW_PORT_CMD_LSTATUS_F) != 0;
1703                 speed = 0;
1704                 fc = 0;
1705                 if (stat & FW_PORT_CMD_RXPAUSE_F)
1706                         fc |= PAUSE_RX;
1707                 if (stat & FW_PORT_CMD_TXPAUSE_F)
1708                         fc |= PAUSE_TX;
1709                 if (stat & FW_PORT_CMD_LSPEED_V(FW_PORT_CAP_SPEED_100M))
1710                         speed = 100;
1711                 else if (stat & FW_PORT_CMD_LSPEED_V(FW_PORT_CAP_SPEED_1G))
1712                         speed = 1000;
1713                 else if (stat & FW_PORT_CMD_LSPEED_V(FW_PORT_CAP_SPEED_10G))
1714                         speed = 10000;
1715                 else if (stat & FW_PORT_CMD_LSPEED_V(FW_PORT_CAP_SPEED_40G))
1716                         speed = 40000;
1717
1718                 /*
1719                  * Scan all of our "ports" (Virtual Interfaces) looking for
1720                  * those bound to the physical port which has changed.  If
1721                  * our recorded state doesn't match the current state,
1722                  * signal that change to the OS code.
1723                  */
1724                 for_each_port(adapter, pidx) {
1725                         struct port_info *pi = adap2pinfo(adapter, pidx);
1726                         struct link_config *lc;
1727
1728                         if (pi->port_id != port_id)
1729                                 continue;
1730
1731                         lc = &pi->link_cfg;
1732
1733                         mod = FW_PORT_CMD_MODTYPE_G(stat);
1734                         if (mod != pi->mod_type) {
1735                                 pi->mod_type = mod;
1736                                 t4vf_os_portmod_changed(adapter, pidx);
1737                         }
1738
1739                         if (link_ok != lc->link_ok || speed != lc->speed ||
1740                             fc != lc->fc) {
1741                                 /* something changed */
1742                                 lc->link_ok = link_ok;
1743                                 lc->speed = speed;
1744                                 lc->fc = fc;
1745                                 lc->supported =
1746                                         be16_to_cpu(port_cmd->u.info.pcap);
1747                                 lc->lp_advertising =
1748                                         be16_to_cpu(port_cmd->u.info.lpacap);
1749                                 t4vf_os_link_changed(adapter, pidx, link_ok);
1750                         }
1751                 }
1752                 break;
1753         }
1754
1755         default:
1756                 dev_err(adapter->pdev_dev, "Unknown firmware reply %X\n",
1757                         opcode);
1758         }
1759         return 0;
1760 }
1761
1762 /**
1763  */
1764 int t4vf_prep_adapter(struct adapter *adapter)
1765 {
1766         int err;
1767         unsigned int chipid;
1768
1769         /* Wait for the device to become ready before proceeding ...
1770          */
1771         err = t4vf_wait_dev_ready(adapter);
1772         if (err)
1773                 return err;
1774
1775         /* Default port and clock for debugging in case we can't reach
1776          * firmware.
1777          */
1778         adapter->params.nports = 1;
1779         adapter->params.vfres.pmask = 1;
1780         adapter->params.vpd.cclk = 50000;
1781
1782         adapter->params.chip = 0;
1783         switch (CHELSIO_PCI_ID_VER(adapter->pdev->device)) {
1784         case CHELSIO_T4:
1785                 adapter->params.chip |= CHELSIO_CHIP_CODE(CHELSIO_T4, 0);
1786                 adapter->params.arch.sge_fl_db = DBPRIO_F;
1787                 adapter->params.arch.mps_tcam_size =
1788                                 NUM_MPS_CLS_SRAM_L_INSTANCES;
1789                 break;
1790
1791         case CHELSIO_T5:
1792                 chipid = REV_G(t4_read_reg(adapter, PL_VF_REV_A));
1793                 adapter->params.chip |= CHELSIO_CHIP_CODE(CHELSIO_T5, chipid);
1794                 adapter->params.arch.sge_fl_db = DBPRIO_F | DBTYPE_F;
1795                 adapter->params.arch.mps_tcam_size =
1796                                 NUM_MPS_T5_CLS_SRAM_L_INSTANCES;
1797                 break;
1798
1799         case CHELSIO_T6:
1800                 chipid = REV_G(t4_read_reg(adapter, PL_VF_REV_A));
1801                 adapter->params.chip |= CHELSIO_CHIP_CODE(CHELSIO_T6, chipid);
1802                 adapter->params.arch.sge_fl_db = 0;
1803                 adapter->params.arch.mps_tcam_size =
1804                                 NUM_MPS_T5_CLS_SRAM_L_INSTANCES;
1805                 break;
1806         }
1807
1808         return 0;
1809 }