drivers/scsi/lpfc/lpfc_mbox.c

   1 /*******************************************************************
   2  * This file is part of the Emulex Linux Device Driver for         *
   3  * Enterprise Fibre Channel Host Bus Adapters.                     *
   4  * Refer to the README file included with this package for         *
   5  * driver version and adapter support.                             *
   6  * Copyright (C) 2004 Emulex Corporation.                          *
   7  * www.emulex.com                                                  *
   8  *                                                                 *
   9  * This program is free software; you can redistribute it and/or   *
  10  * modify it under the terms of the GNU General Public License     *
  11  * as published by the Free Software Foundation; either version 2  *
  12  * of the License, or (at your option) any later version.          *
  13  *                                                                 *
  14  * This program is distributed in the hope that it will be useful, *
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of  *
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the   *
  17  * GNU General Public License for more details, a copy of which    *
  18  * can be found in the file COPYING included with this package.    *
  19  *******************************************************************/
  20
  21 /*
  22  * $Id: lpfc_mbox.c 1.85 2005/04/13 11:59:11EDT sf_support Exp  $
  23  */
  24
  25 #include <linux/blkdev.h>
  26 #include <linux/pci.h>
  27 #include <linux/interrupt.h>
  28
  29 #include "lpfc_hw.h"
  30 #include "lpfc_sli.h"
  31 #include "lpfc_disc.h"
  32 #include "lpfc_scsi.h"
  33 #include "lpfc.h"
  34 #include "lpfc_logmsg.h"
  35 #include "lpfc_crtn.h"
  36 #include "lpfc_compat.h"
  37
  38 /**********************************************/
  39
  40 /*                mailbox command             */
  41 /**********************************************/
  42 void
  43 lpfc_dump_mem(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmb, uint16_t offset)
  44 {
  45         MAILBOX_t *mb;
  46         void *ctx;
  47
  48         mb = &pmb->mb;
  49         ctx = pmb->context2;
  50
  51         /* Setup to dump VPD region */
  52         memset(pmb, 0, sizeof (LPFC_MBOXQ_t));
  53         mb->mbxCommand = MBX_DUMP_MEMORY;
  54         mb->un.varDmp.cv = 1;
  55         mb->un.varDmp.type = DMP_NV_PARAMS;
  56         mb->un.varDmp.entry_index = offset;
  57         mb->un.varDmp.region_id = DMP_REGION_VPD;
  58         mb->un.varDmp.word_cnt = (DMP_RSP_SIZE / sizeof (uint32_t));
  59         mb->un.varDmp.co = 0;
  60         mb->un.varDmp.resp_offset = 0;
  61         pmb->context2 = ctx;
  62         mb->mbxOwner = OWN_HOST;
  63         return;
  64 }
  65
  66 /**********************************************/
  67 /*  lpfc_read_nv  Issue a READ NVPARAM        */
  68 /*                mailbox command             */
  69 /**********************************************/
  70 void
  71 lpfc_read_nv(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmb)
  72 {
  73         MAILBOX_t *mb;
  74
  75         mb = &pmb->mb;
  76         memset(pmb, 0, sizeof (LPFC_MBOXQ_t));
  77         mb->mbxCommand = MBX_READ_NV;
  78         mb->mbxOwner = OWN_HOST;
  79         return;
  80 }
  81
  82 /**********************************************/
  83 /*  lpfc_read_la  Issue a READ LA             */
  84 /*                mailbox command             */
  85 /**********************************************/
  86 int
  87 lpfc_read_la(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmb, struct lpfc_dmabuf *mp)
  88 {
  89         MAILBOX_t *mb;
  90         struct lpfc_sli *psli;
  91
  92         psli = &phba->sli;
  93         mb = &pmb->mb;
  94         memset(pmb, 0, sizeof (LPFC_MBOXQ_t));
  95
  96         INIT_LIST_HEAD(&mp->list);
  97         mb->mbxCommand = MBX_READ_LA64;
  98         mb->un.varReadLA.un.lilpBde64.tus.f.bdeSize = 128;
  99         mb->un.varReadLA.un.lilpBde64.addrHigh = putPaddrHigh(mp->phys);
 100         mb->un.varReadLA.un.lilpBde64.addrLow = putPaddrLow(mp->phys);
 101
 102         /* Save address for later completion and set the owner to host so that
 103          * the FW knows this mailbox is available for processing.
 104          */
 105         pmb->context1 = (uint8_t *) mp;
 106         mb->mbxOwner = OWN_HOST;
 107         return (0);
 108 }
 109
 110 /**********************************************/
 111 /*  lpfc_clear_la  Issue a CLEAR LA           */
 112 /*                 mailbox command            */
 113 /**********************************************/
 114 void
 115 lpfc_clear_la(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmb)
 116 {
 117         MAILBOX_t *mb;
 118
 119         mb = &pmb->mb;
 120         memset(pmb, 0, sizeof (LPFC_MBOXQ_t));
 121
 122         mb->un.varClearLA.eventTag = phba->fc_eventTag;
 123         mb->mbxCommand = MBX_CLEAR_LA;
 124         mb->mbxOwner = OWN_HOST;
 125         return;
 126 }
 127
 128 /**************************************************/
 129 /*  lpfc_config_link  Issue a CONFIG LINK         */
 130 /*                    mailbox command             */
 131 /**************************************************/
 132 void
 133 lpfc_config_link(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmb)
 134 {
 135         MAILBOX_t *mb = &pmb->mb;
 136         memset(pmb, 0, sizeof (LPFC_MBOXQ_t));
 137
 138         /* NEW_FEATURE
 139          * SLI-2, Coalescing Response Feature.
 140          */
 141         if (phba->cfg_cr_delay) {
 142                 mb->un.varCfgLnk.cr = 1;
 143                 mb->un.varCfgLnk.ci = 1;
 144                 mb->un.varCfgLnk.cr_delay = phba->cfg_cr_delay;
 145                 mb->un.varCfgLnk.cr_count = phba->cfg_cr_count;
 146         }
 147
 148         mb->un.varCfgLnk.myId = phba->fc_myDID;
 149         mb->un.varCfgLnk.edtov = phba->fc_edtov;
 150         mb->un.varCfgLnk.arbtov = phba->fc_arbtov;
 151         mb->un.varCfgLnk.ratov = phba->fc_ratov;
 152         mb->un.varCfgLnk.rttov = phba->fc_rttov;
 153         mb->un.varCfgLnk.altov = phba->fc_altov;
 154         mb->un.varCfgLnk.crtov = phba->fc_crtov;
 155         mb->un.varCfgLnk.citov = phba->fc_citov;
 156
 157         if (phba->cfg_ack0)
 158                 mb->un.varCfgLnk.ack0_enable = 1;
 159
 160         mb->mbxCommand = MBX_CONFIG_LINK;
 161         mb->mbxOwner = OWN_HOST;
 162         return;
 163 }
 164
 165 /**********************************************/
 166 /*  lpfc_init_link  Issue an INIT LINK        */
 167 /*                  mailbox command           */
 168 /**********************************************/
 169 void
 170 lpfc_init_link(struct lpfc_hba * phba,
 171                LPFC_MBOXQ_t * pmb, uint32_t topology, uint32_t linkspeed)
 172 {
 173         lpfc_vpd_t *vpd;
 174         struct lpfc_sli *psli;
 175         MAILBOX_t *mb;
 176
 177         mb = &pmb->mb;
 178         memset(pmb, 0, sizeof (LPFC_MBOXQ_t));
 179
 180         psli = &phba->sli;
 181         switch (topology) {
 182         case FLAGS_TOPOLOGY_MODE_LOOP_PT:
 183                 mb->un.varInitLnk.link_flags = FLAGS_TOPOLOGY_MODE_LOOP;
 184                 mb->un.varInitLnk.link_flags |= FLAGS_TOPOLOGY_FAILOVER;
 185                 break;
 186         case FLAGS_TOPOLOGY_MODE_PT_PT:
 187                 mb->un.varInitLnk.link_flags = FLAGS_TOPOLOGY_MODE_PT_PT;
 188                 break;
 189         case FLAGS_TOPOLOGY_MODE_LOOP:
 190                 mb->un.varInitLnk.link_flags = FLAGS_TOPOLOGY_MODE_LOOP;
 191                 break;
 192         case FLAGS_TOPOLOGY_MODE_PT_LOOP:
 193                 mb->un.varInitLnk.link_flags = FLAGS_TOPOLOGY_MODE_PT_PT;
 194                 mb->un.varInitLnk.link_flags |= FLAGS_TOPOLOGY_FAILOVER;
 195                 break;
 196         }
 197
 198         /* NEW_FEATURE
 199          * Setting up the link speed
 200          */
 201         vpd = &phba->vpd;
 202         if (vpd->rev.feaLevelHigh >= 0x02){
 203                 switch(linkspeed){
 204                         case LINK_SPEED_1G:
 205                         case LINK_SPEED_2G:
 206                         case LINK_SPEED_4G:
 207                                 mb->un.varInitLnk.link_flags |=
 208                                                         FLAGS_LINK_SPEED;
 209                                 mb->un.varInitLnk.link_speed = linkspeed;
 210                         break;
 211                         case LINK_SPEED_AUTO:
 212                         default:
 213                                 mb->un.varInitLnk.link_speed =
 214                                                         LINK_SPEED_AUTO;
 215                         break;
 216                 }
 217
 218         }
 219         else
 220                 mb->un.varInitLnk.link_speed = LINK_SPEED_AUTO;
 221
 222         mb->mbxCommand = (volatile uint8_t)MBX_INIT_LINK;
 223         mb->mbxOwner = OWN_HOST;
 224         mb->un.varInitLnk.fabric_AL_PA = phba->fc_pref_ALPA;
 225         return;
 226 }
 227
 228 /**********************************************/
 229 /*  lpfc_read_sparam  Issue a READ SPARAM     */
 230 /*                    mailbox command         */
 231 /**********************************************/
 232 int
 233 lpfc_read_sparam(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmb)
 234 {
 235         struct lpfc_dmabuf *mp;
 236         MAILBOX_t *mb;
 237         struct lpfc_sli *psli;
 238
 239         psli = &phba->sli;
 240         mb = &pmb->mb;
 241         memset(pmb, 0, sizeof (LPFC_MBOXQ_t));
 242
 243         mb->mbxOwner = OWN_HOST;
 244
 245         /* Get a buffer to hold the HBAs Service Parameters */
 246
 247         if (((mp = kmalloc(sizeof (struct lpfc_dmabuf), GFP_KERNEL)) == 0) ||
 248             ((mp->virt = lpfc_mbuf_alloc(phba, 0, &(mp->phys))) == 0)) {
 249                 if (mp)
 250                         kfree(mp);
 251                 mb->mbxCommand = MBX_READ_SPARM64;
 252                 /* READ_SPARAM: no buffers */
 253                 lpfc_printf_log(phba,
 254                                 KERN_WARNING,
 255                                 LOG_MBOX,
 256                                 "%d:0301 READ_SPARAM: no buffers\n",
 257                                 phba->brd_no);
 258                 return (1);
 259         }
 260         INIT_LIST_HEAD(&mp->list);
 261         mb->mbxCommand = MBX_READ_SPARM64;
 262         mb->un.varRdSparm.un.sp64.tus.f.bdeSize = sizeof (struct serv_parm);
 263         mb->un.varRdSparm.un.sp64.addrHigh = putPaddrHigh(mp->phys);
 264         mb->un.varRdSparm.un.sp64.addrLow = putPaddrLow(mp->phys);
 265
 266         /* save address for completion */
 267         pmb->context1 = mp;
 268
 269         return (0);
 270 }
 271
 272 /********************************************/
 273 /*  lpfc_unreg_did  Issue a UNREG_DID       */
 274 /*                  mailbox command         */
 275 /********************************************/
 276 void
 277 lpfc_unreg_did(struct lpfc_hba * phba, uint32_t did, LPFC_MBOXQ_t * pmb)
 278 {
 279         MAILBOX_t *mb;
 280
 281         mb = &pmb->mb;
 282         memset(pmb, 0, sizeof (LPFC_MBOXQ_t));
 283
 284         mb->un.varUnregDID.did = did;
 285
 286         mb->mbxCommand = MBX_UNREG_D_ID;
 287         mb->mbxOwner = OWN_HOST;
 288         return;
 289 }
 290
 291 /***********************************************/
 292
 293 /*                  command to write slim      */
 294 /***********************************************/
 295 void
 296 lpfc_set_slim(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmb, uint32_t addr,
 297               uint32_t value)
 298 {
 299         MAILBOX_t *mb;
 300
 301         mb = &pmb->mb;
 302         memset(pmb, 0, sizeof (LPFC_MBOXQ_t));
 303
 304         /* addr = 0x090597 is AUTO ABTS disable for ELS commands */
 305         /* addr = 0x052198 is DELAYED ABTS enable for ELS commands */
 306
 307         /*
 308          * Always turn on DELAYED ABTS for ELS timeouts
 309          */
 310         if ((addr == 0x052198) && (value == 0))
 311                 value = 1;
 312
 313         mb->un.varWords[0] = addr;
 314         mb->un.varWords[1] = value;
 315
 316         mb->mbxCommand = MBX_SET_SLIM;
 317         mb->mbxOwner = OWN_HOST;
 318         return;
 319 }
 320
 321 /**********************************************/
 322 /*  lpfc_read_nv  Issue a READ CONFIG         */
 323 /*                mailbox command             */
 324 /**********************************************/
 325 void
 326 lpfc_read_config(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmb)
 327 {
 328         MAILBOX_t *mb;
 329
 330         mb = &pmb->mb;
 331         memset(pmb, 0, sizeof (LPFC_MBOXQ_t));
 332
 333         mb->mbxCommand = MBX_READ_CONFIG;
 334         mb->mbxOwner = OWN_HOST;
 335         return;
 336 }
 337
 338 /********************************************/
 339 /*  lpfc_reg_login  Issue a REG_LOGIN       */
 340 /*                  mailbox command         */
 341 /********************************************/
 342 int
 343 lpfc_reg_login(struct lpfc_hba * phba,
 344                uint32_t did, uint8_t * param, LPFC_MBOXQ_t * pmb, uint32_t flag)
 345 {
 346         uint8_t *sparam;
 347         struct lpfc_dmabuf *mp;
 348         MAILBOX_t *mb;
 349         struct lpfc_sli *psli;
 350
 351         psli = &phba->sli;
 352         mb = &pmb->mb;
 353         memset(pmb, 0, sizeof (LPFC_MBOXQ_t));
 354
 355         mb->un.varRegLogin.rpi = 0;
 356         mb->un.varRegLogin.did = did;
 357         mb->un.varWords[30] = flag;     /* Set flag to issue action on cmpl */
 358
 359         mb->mbxOwner = OWN_HOST;
 360
 361         /* Get a buffer to hold NPorts Service Parameters */
 362         if (((mp = kmalloc(sizeof (struct lpfc_dmabuf), GFP_KERNEL)) == NULL) ||
 363             ((mp->virt = lpfc_mbuf_alloc(phba, 0, &(mp->phys))) == 0)) {
 364                 if (mp)
 365                         kfree(mp);
 366
 367                 mb->mbxCommand = MBX_REG_LOGIN64;
 368                 /* REG_LOGIN: no buffers */
 369                 lpfc_printf_log(phba,
 370                                KERN_WARNING,
 371                                LOG_MBOX,
 372                                "%d:0302 REG_LOGIN: no buffers Data x%x x%x\n",
 373                                phba->brd_no,
 374                                (uint32_t) did, (uint32_t) flag);
 375                 return (1);
 376         }
 377         INIT_LIST_HEAD(&mp->list);
 378         sparam = mp->virt;
 379
 380         /* Copy param's into a new buffer */
 381         memcpy(sparam, param, sizeof (struct serv_parm));
 382
 383         /* save address for completion */
 384         pmb->context1 = (uint8_t *) mp;
 385
 386         mb->mbxCommand = MBX_REG_LOGIN64;
 387         mb->un.varRegLogin.un.sp64.tus.f.bdeSize = sizeof (struct serv_parm);
 388         mb->un.varRegLogin.un.sp64.addrHigh = putPaddrHigh(mp->phys);
 389         mb->un.varRegLogin.un.sp64.addrLow = putPaddrLow(mp->phys);
 390
 391         return (0);
 392 }
 393
 394 /**********************************************/
 395 /*  lpfc_unreg_login  Issue a UNREG_LOGIN     */
 396 /*                    mailbox command         */
 397 /**********************************************/
 398 void
 399 lpfc_unreg_login(struct lpfc_hba * phba, uint32_t rpi, LPFC_MBOXQ_t * pmb)
 400 {
 401         MAILBOX_t *mb;
 402
 403         mb = &pmb->mb;
 404         memset(pmb, 0, sizeof (LPFC_MBOXQ_t));
 405
 406         mb->un.varUnregLogin.rpi = (uint16_t) rpi;
 407         mb->un.varUnregLogin.rsvd1 = 0;
 408
 409         mb->mbxCommand = MBX_UNREG_LOGIN;
 410         mb->mbxOwner = OWN_HOST;
 411         return;
 412 }
 413
 414 static void
 415 lpfc_config_pcb_setup(struct lpfc_hba * phba)
 416 {
 417         struct lpfc_sli *psli = &phba->sli;
 418         struct lpfc_sli_ring *pring;
 419         PCB_t *pcbp = &phba->slim2p->pcb;
 420         dma_addr_t pdma_addr;
 421         uint32_t offset;
 422         uint32_t iocbCnt;
 423         int i;
 424
 425         psli->MBhostaddr = (uint32_t *)&phba->slim2p->mbx;
 426         pcbp->maxRing = (psli->num_rings - 1);
 427
 428         iocbCnt = 0;
 429         for (i = 0; i < psli->num_rings; i++) {
 430                 pring = &psli->ring[i];
 431                 /* A ring MUST have both cmd and rsp entries defined to be
 432                    valid */
 433                 if ((pring->numCiocb == 0) || (pring->numRiocb == 0)) {
 434                         pcbp->rdsc[i].cmdEntries = 0;
 435                         pcbp->rdsc[i].rspEntries = 0;
 436                         pcbp->rdsc[i].cmdAddrHigh = 0;
 437                         pcbp->rdsc[i].rspAddrHigh = 0;
 438                         pcbp->rdsc[i].cmdAddrLow = 0;
 439                         pcbp->rdsc[i].rspAddrLow = 0;
 440                         pring->cmdringaddr = NULL;
 441                         pring->rspringaddr = NULL;
 442                         continue;
 443                 }
 444                 /* Command ring setup for ring */
 445                 pring->cmdringaddr =
 446                     (void *)&phba->slim2p->IOCBs[iocbCnt];
 447                 pcbp->rdsc[i].cmdEntries = pring->numCiocb;
 448
 449                 offset = (uint8_t *)&phba->slim2p->IOCBs[iocbCnt] -
 450                          (uint8_t *)phba->slim2p;
 451                 pdma_addr = phba->slim2p_mapping + offset;
 452                 pcbp->rdsc[i].cmdAddrHigh = putPaddrHigh(pdma_addr);
 453                 pcbp->rdsc[i].cmdAddrLow = putPaddrLow(pdma_addr);
 454                 iocbCnt += pring->numCiocb;
 455
 456                 /* Response ring setup for ring */
 457                 pring->rspringaddr =
 458                     (void *)&phba->slim2p->IOCBs[iocbCnt];
 459
 460                 pcbp->rdsc[i].rspEntries = pring->numRiocb;
 461                 offset = (uint8_t *)&phba->slim2p->IOCBs[iocbCnt] -
 462                          (uint8_t *)phba->slim2p;
 463                 pdma_addr = phba->slim2p_mapping + offset;
 464                 pcbp->rdsc[i].rspAddrHigh = putPaddrHigh(pdma_addr);
 465                 pcbp->rdsc[i].rspAddrLow = putPaddrLow(pdma_addr);
 466                 iocbCnt += pring->numRiocb;
 467         }
 468 }
 469
 470 void
 471 lpfc_read_rev(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmb)
 472 {
 473         MAILBOX_t *mb;
 474
 475         mb = &pmb->mb;
 476         memset(pmb, 0, sizeof (LPFC_MBOXQ_t));
 477         mb->un.varRdRev.cv = 1;
 478         mb->mbxCommand = MBX_READ_REV;
 479         mb->mbxOwner = OWN_HOST;
 480         return;
 481 }
 482
 483 void
 484 lpfc_config_ring(struct lpfc_hba * phba, int ring, LPFC_MBOXQ_t * pmb)
 485 {
 486         int i;
 487         MAILBOX_t *mb = &pmb->mb;
 488         struct lpfc_sli *psli;
 489         struct lpfc_sli_ring *pring;
 490
 491         memset(pmb, 0, sizeof (LPFC_MBOXQ_t));
 492
 493         mb->un.varCfgRing.ring = ring;
 494         mb->un.varCfgRing.maxOrigXchg = 0;
 495         mb->un.varCfgRing.maxRespXchg = 0;
 496         mb->un.varCfgRing.recvNotify = 1;
 497
 498         psli = &phba->sli;
 499         pring = &psli->ring[ring];
 500         mb->un.varCfgRing.numMask = pring->num_mask;
 501         mb->mbxCommand = MBX_CONFIG_RING;
 502         mb->mbxOwner = OWN_HOST;
 503
 504         /* Is this ring configured for a specific profile */
 505         if (pring->prt[0].profile) {
 506                 mb->un.varCfgRing.profile = pring->prt[0].profile;
 507                 return;
 508         }
 509
 510         /* Otherwise we setup specific rctl / type masks for this ring */
 511         for (i = 0; i < pring->num_mask; i++) {
 512                 mb->un.varCfgRing.rrRegs[i].rval = pring->prt[i].rctl;
 513                 if (mb->un.varCfgRing.rrRegs[i].rval != FC_ELS_REQ)
 514                         mb->un.varCfgRing.rrRegs[i].rmask = 0xff;
 515                 else
 516                         mb->un.varCfgRing.rrRegs[i].rmask = 0xfe;
 517                 mb->un.varCfgRing.rrRegs[i].tval = pring->prt[i].type;
 518                 mb->un.varCfgRing.rrRegs[i].tmask = 0xff;
 519         }
 520
 521         return;
 522 }
 523
 524 void
 525 lpfc_config_port(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmb)
 526 {
 527         MAILBOX_t *mb = &pmb->mb;
 528         dma_addr_t pdma_addr;
 529         uint32_t bar_low, bar_high;
 530         size_t offset;
 531         HGP hgp;
 532         void __iomem *to_slim;
 533
 534         memset(pmb, 0, sizeof(LPFC_MBOXQ_t));
 535         mb->mbxCommand = MBX_CONFIG_PORT;
 536         mb->mbxOwner = OWN_HOST;
 537
 538         mb->un.varCfgPort.pcbLen = sizeof(PCB_t);
 539
 540         offset = (uint8_t *)&phba->slim2p->pcb - (uint8_t *)phba->slim2p;
 541         pdma_addr = phba->slim2p_mapping + offset;
 542         mb->un.varCfgPort.pcbLow = putPaddrLow(pdma_addr);
 543         mb->un.varCfgPort.pcbHigh = putPaddrHigh(pdma_addr);
 544
 545         /* Now setup pcb */
 546         phba->slim2p->pcb.type = TYPE_NATIVE_SLI2;
 547         phba->slim2p->pcb.feature = FEATURE_INITIAL_SLI2;
 548
 549         /* Setup Mailbox pointers */
 550         phba->slim2p->pcb.mailBoxSize = sizeof(MAILBOX_t);
 551         offset = (uint8_t *)&phba->slim2p->mbx - (uint8_t *)phba->slim2p;
 552         pdma_addr = phba->slim2p_mapping + offset;
 553         phba->slim2p->pcb.mbAddrHigh = putPaddrHigh(pdma_addr);
 554         phba->slim2p->pcb.mbAddrLow = putPaddrLow(pdma_addr);
 555
 556         /*
 557          * Setup Host Group ring pointer.
 558          *
 559          * For efficiency reasons, the ring get/put pointers can be
 560          * placed in adapter memory (SLIM) rather than in host memory.
 561          * This allows firmware to avoid PCI reads/writes when updating
 562          * and checking pointers.
 563          *
 564          * The firmware recognizes the use of SLIM memory by comparing
 565          * the address of the get/put pointers structure with that of
 566          * the SLIM BAR (BAR0).
 567          *
 568          * Caution: be sure to use the PCI config space value of BAR0/BAR1
 569          * (the hardware's view of the base address), not the OS's
 570          * value of pci_resource_start() as the OS value may be a cookie
 571          * for ioremap/iomap.
 572          */
 573
 574
 575         pci_read_config_dword(phba->pcidev, PCI_BASE_ADDRESS_0, &bar_low);
 576         pci_read_config_dword(phba->pcidev, PCI_BASE_ADDRESS_1, &bar_high);
 577
 578
 579         /* mask off BAR0's flag bits 0 - 3 */
 580         phba->slim2p->pcb.hgpAddrLow = (bar_low & PCI_BASE_ADDRESS_MEM_MASK) +
 581                                         (SLIMOFF*sizeof(uint32_t));
 582         if (bar_low & PCI_BASE_ADDRESS_MEM_TYPE_64)
 583                 phba->slim2p->pcb.hgpAddrHigh = bar_high;
 584         else
 585                 phba->slim2p->pcb.hgpAddrHigh = 0;
 586         /* write HGP data to SLIM at the required longword offset */
 587         memset(&hgp, 0, sizeof(HGP));
 588         to_slim = phba->MBslimaddr + (SLIMOFF*sizeof (uint32_t));
 589         lpfc_memcpy_to_slim(to_slim, &hgp, sizeof (HGP));
 590
 591         /* Setup Port Group ring pointer */
 592         offset = (uint8_t *)&phba->slim2p->mbx.us.s2.port -
 593                  (uint8_t *)phba->slim2p;
 594         pdma_addr = phba->slim2p_mapping + offset;
 595         phba->slim2p->pcb.pgpAddrHigh = putPaddrHigh(pdma_addr);
 596         phba->slim2p->pcb.pgpAddrLow = putPaddrLow(pdma_addr);
 597
 598         /* Use callback routine to setp rings in the pcb */
 599         lpfc_config_pcb_setup(phba);
 600
 601         /* special handling for LC HBAs */
 602         if (lpfc_is_LC_HBA(phba->pcidev->device)) {
 603                 uint32_t hbainit[5];
 604
 605                 lpfc_hba_init(phba, hbainit);
 606
 607                 memcpy(&mb->un.varCfgPort.hbainit, hbainit, 20);
 608         }
 609
 610         /* Swap PCB if needed */
 611         lpfc_sli_pcimem_bcopy(&phba->slim2p->pcb, &phba->slim2p->pcb,
 612                                                                 sizeof (PCB_t));
 613
 614         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
 615                         "%d:0405 Service Level Interface (SLI) 2 selected\n",
 616                         phba->brd_no);
 617 }
 618
 619 void
 620 lpfc_mbox_put(struct lpfc_hba * phba, LPFC_MBOXQ_t * mbq)
 621 {
 622         struct lpfc_sli *psli;
 623
 624         psli = &phba->sli;
 625
 626         list_add_tail(&mbq->list, &psli->mboxq);
 627
 628         psli->mboxq_cnt++;
 629
 630         return;
 631 }
 632
 633 LPFC_MBOXQ_t *
 634 lpfc_mbox_get(struct lpfc_hba * phba)
 635 {
 636         LPFC_MBOXQ_t *mbq = NULL;
 637         struct lpfc_sli *psli = &phba->sli;
 638
 639         list_remove_head((&psli->mboxq), mbq, LPFC_MBOXQ_t,
 640                          list);
 641         if (mbq) {
 642                 psli->mboxq_cnt--;
 643         }
 644
 645         return mbq;
 646 }