drivers/scsi/fnic/vnic_devcmd.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * Copyright 2008 Cisco Systems, Inc.  All rights reserved.
   4  * Copyright 2007 Nuova Systems, Inc.  All rights reserved.
   5  */
   6 #ifndef _VNIC_DEVCMD_H_
   7 #define _VNIC_DEVCMD_H_
   8
   9 #define _CMD_NBITS      14
  10 #define _CMD_VTYPEBITS  10
  11 #define _CMD_FLAGSBITS  6
  12 #define _CMD_DIRBITS    2
  13
  14 #define _CMD_NMASK      ((1 << _CMD_NBITS)-1)
  15 #define _CMD_VTYPEMASK  ((1 << _CMD_VTYPEBITS)-1)
  16 #define _CMD_FLAGSMASK  ((1 << _CMD_FLAGSBITS)-1)
  17 #define _CMD_DIRMASK    ((1 << _CMD_DIRBITS)-1)
  18
  19 #define _CMD_NSHIFT     0
  20 #define _CMD_VTYPESHIFT (_CMD_NSHIFT+_CMD_NBITS)
  21 #define _CMD_FLAGSSHIFT (_CMD_VTYPESHIFT+_CMD_VTYPEBITS)
  22 #define _CMD_DIRSHIFT   (_CMD_FLAGSSHIFT+_CMD_FLAGSBITS)
  23
  24 /*
  25  * Direction bits (from host perspective).
  26  */
  27 #define _CMD_DIR_NONE   0U
  28 #define _CMD_DIR_WRITE  1U
  29 #define _CMD_DIR_READ   2U
  30 #define _CMD_DIR_RW     (_CMD_DIR_WRITE | _CMD_DIR_READ)
  31
  32 /*
  33  * Flag bits.
  34  */
  35 #define _CMD_FLAGS_NONE 0U
  36 #define _CMD_FLAGS_NOWAIT 1U
  37
  38 /*
  39  * vNIC type bits.
  40  */
  41 #define _CMD_VTYPE_NONE  0U
  42 #define _CMD_VTYPE_ENET  1U
  43 #define _CMD_VTYPE_FC    2U
  44 #define _CMD_VTYPE_SCSI  4U
  45 #define _CMD_VTYPE_ALL   (_CMD_VTYPE_ENET | _CMD_VTYPE_FC | _CMD_VTYPE_SCSI)
  46
  47 /*
  48  * Used to create cmds..
  49 */
  50 #define _CMDCF(dir, flags, vtype, nr)  \
  51         (((dir)   << _CMD_DIRSHIFT) | \
  52         ((flags) << _CMD_FLAGSSHIFT) | \
  53         ((vtype) << _CMD_VTYPESHIFT) | \
  54         ((nr)    << _CMD_NSHIFT))
  55 #define _CMDC(dir, vtype, nr)    _CMDCF(dir, 0, vtype, nr)
  56 #define _CMDCNW(dir, vtype, nr)  _CMDCF(dir, _CMD_FLAGS_NOWAIT, vtype, nr)
  57
  58 /*
  59  * Used to decode cmds..
  60 */
  61 #define _CMD_DIR(cmd)            (((cmd) >> _CMD_DIRSHIFT) & _CMD_DIRMASK)
  62 #define _CMD_FLAGS(cmd)          (((cmd) >> _CMD_FLAGSSHIFT) & _CMD_FLAGSMASK)
  63 #define _CMD_VTYPE(cmd)          (((cmd) >> _CMD_VTYPESHIFT) & _CMD_VTYPEMASK)
  64 #define _CMD_N(cmd)              (((cmd) >> _CMD_NSHIFT) & _CMD_NMASK)
  65
  66 enum vnic_devcmd_cmd {
  67         CMD_NONE                = _CMDC(_CMD_DIR_NONE, _CMD_VTYPE_NONE, 0),
  68
  69         /* mcpu fw info in mem: (u64)a0=paddr to struct vnic_devcmd_fw_info */
  70         CMD_MCPU_FW_INFO        = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 1),
  71
  72         /* dev-specific block member:
  73          *    in: (u16)a0=offset,(u8)a1=size
  74          *    out: a0=value */
  75         CMD_DEV_SPEC            = _CMDC(_CMD_DIR_RW, _CMD_VTYPE_ALL, 2),
  76
  77         /* stats clear */
  78         CMD_STATS_CLEAR         = _CMDCNW(_CMD_DIR_NONE, _CMD_VTYPE_ALL, 3),
  79
  80         /* stats dump in mem: (u64)a0=paddr to stats area,
  81          *                    (u16)a1=sizeof stats area */
  82         CMD_STATS_DUMP          = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 4),
  83
  84         /* set Rx packet filter: (u32)a0=filters (see CMD_PFILTER_*) */
  85         CMD_PACKET_FILTER       = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 7),
  86
  87         /* hang detection notification */
  88         CMD_HANG_NOTIFY         = _CMDC(_CMD_DIR_NONE, _CMD_VTYPE_ALL, 8),
  89
  90         /* MAC address in (u48)a0 */
  91         CMD_MAC_ADDR            = _CMDC(_CMD_DIR_READ,
  92                                         _CMD_VTYPE_ENET | _CMD_VTYPE_FC, 9),
  93
  94         /* disable/enable promisc mode: (u8)a0=0/1 */
  95 /***** XXX DEPRECATED *****/
  96         CMD_PROMISC_MODE        = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 10),
  97
  98         /* disable/enable all-multi mode: (u8)a0=0/1 */
  99 /***** XXX DEPRECATED *****/
 100         CMD_ALLMULTI_MODE       = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 11),
 101
 102         /* add addr from (u48)a0 */
 103         CMD_ADDR_ADD            = _CMDCNW(_CMD_DIR_WRITE,
 104                                         _CMD_VTYPE_ENET | _CMD_VTYPE_FC, 12),
 105
 106         /* del addr from (u48)a0 */
 107         CMD_ADDR_DEL            = _CMDCNW(_CMD_DIR_WRITE,
 108                                         _CMD_VTYPE_ENET | _CMD_VTYPE_FC, 13),
 109
 110         /* add VLAN id in (u16)a0 */
 111         CMD_VLAN_ADD            = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 14),
 112
 113         /* del VLAN id in (u16)a0 */
 114         CMD_VLAN_DEL            = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 15),
 115
 116         /* nic_cfg in (u32)a0 */
 117         CMD_NIC_CFG             = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 16),
 118
 119         /* union vnic_rss_key in mem: (u64)a0=paddr, (u16)a1=len */
 120         CMD_RSS_KEY             = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 17),
 121
 122         /* union vnic_rss_cpu in mem: (u64)a0=paddr, (u16)a1=len */
 123         CMD_RSS_CPU             = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 18),
 124
 125         /* initiate softreset */
 126         CMD_SOFT_RESET          = _CMDCNW(_CMD_DIR_NONE, _CMD_VTYPE_ALL, 19),
 127
 128         /* softreset status:
 129          *    out: a0=0 reset complete, a0=1 reset in progress */
 130         CMD_SOFT_RESET_STATUS   = _CMDC(_CMD_DIR_READ, _CMD_VTYPE_ALL, 20),
 131
 132         /* set struct vnic_devcmd_notify buffer in mem:
 133          * in:
 134          *   (u64)a0=paddr to notify (set paddr=0 to unset)
 135          *   (u32)a1 & 0x00000000ffffffff=sizeof(struct vnic_devcmd_notify)
 136          *   (u16)a1 & 0x0000ffff00000000=intr num (-1 for no intr)
 137          * out:
 138          *   (u32)a1 = effective size
 139          */
 140         CMD_NOTIFY              = _CMDC(_CMD_DIR_RW, _CMD_VTYPE_ALL, 21),
 141
 142         /* UNDI API: (u64)a0=paddr to s_PXENV_UNDI_ struct,
 143          *           (u8)a1=PXENV_UNDI_xxx */
 144         CMD_UNDI                = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 22),
 145
 146         /* initiate open sequence (u32)a0=flags (see CMD_OPENF_*) */
 147         CMD_OPEN                = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 23),
 148
 149         /* open status:
 150          *    out: a0=0 open complete, a0=1 open in progress */
 151         CMD_OPEN_STATUS         = _CMDC(_CMD_DIR_READ, _CMD_VTYPE_ALL, 24),
 152
 153         /* close vnic */
 154         CMD_CLOSE               = _CMDC(_CMD_DIR_NONE, _CMD_VTYPE_ALL, 25),
 155
 156         /* initialize virtual link: (u32)a0=flags (see CMD_INITF_*) */
 157         CMD_INIT                = _CMDCNW(_CMD_DIR_READ, _CMD_VTYPE_ALL, 26),
 158
 159         /* variant of CMD_INIT, with provisioning info
 160          *     (u64)a0=paddr of vnic_devcmd_provinfo
 161          *     (u32)a1=sizeof provision info
 162          */
 163         CMD_INIT_PROV_INFO      = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 27),
 164
 165         /* enable virtual link */
 166         CMD_ENABLE              = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 28),
 167
 168         /* disable virtual link */
 169         CMD_DISABLE             = _CMDC(_CMD_DIR_NONE, _CMD_VTYPE_ALL, 29),
 170
 171         /* stats dump all vnics on uplink in mem: (u64)a0=paddr (u32)a1=uif */
 172         CMD_STATS_DUMP_ALL      = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 30),
 173
 174         /* init status:
 175          *    out: a0=0 init complete, a0=1 init in progress
 176          *         if a0=0, a1=errno */
 177         CMD_INIT_STATUS         = _CMDC(_CMD_DIR_READ, _CMD_VTYPE_ALL, 31),
 178
 179         /* INT13 API: (u64)a0=paddr to vnic_int13_params struct
 180          *            (u8)a1=INT13_CMD_xxx */
 181         CMD_INT13               = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_FC, 32),
 182
 183         /* logical uplink enable/disable: (u64)a0: 0/1=disable/enable */
 184         CMD_LOGICAL_UPLINK      = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 33),
 185
 186         /* undo initialize of virtual link */
 187         CMD_DEINIT              = _CMDCNW(_CMD_DIR_NONE, _CMD_VTYPE_ALL, 34),
 188
 189         /* check fw capability of a cmd:
 190          * in:  (u32)a0=cmd
 191          * out: (u32)a0=errno, 0:valid cmd, a1=supported VNIC_STF_* bits */
 192         CMD_CAPABILITY      = _CMDC(_CMD_DIR_RW, _CMD_VTYPE_ALL, 36),
 193
 194         /* persistent binding info
 195          * in:  (u64)a0=paddr of arg
 196          *      (u32)a1=CMD_PERBI_XXX */
 197         CMD_PERBI       = _CMDC(_CMD_DIR_RW, _CMD_VTYPE_FC, 37),
 198
 199         /* Interrupt Assert Register functionality
 200          * in: (u16)a0=interrupt number to assert
 201          */
 202         CMD_IAR         = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 38),
 203
 204         /* initiate hangreset, like softreset after hang detected */
 205         CMD_HANG_RESET      = _CMDC(_CMD_DIR_NONE, _CMD_VTYPE_ALL, 39),
 206
 207         /* hangreset status:
 208          *    out: a0=0 reset complete, a0=1 reset in progress */
 209         CMD_HANG_RESET_STATUS   = _CMDC(_CMD_DIR_READ, _CMD_VTYPE_ALL, 40),
 210
 211         /*
 212          * Set hw ingress packet vlan rewrite mode:
 213          * in:  (u32)a0=new vlan rewrite mode
 214          * out: (u32)a0=old vlan rewrite mode */
 215         CMD_IG_VLAN_REWRITE_MODE = _CMDC(_CMD_DIR_RW, _CMD_VTYPE_ENET, 41),
 216
 217         /*
 218          * in:  (u16)a0=bdf of target vnic
 219          *      (u32)a1=cmd to proxy
 220          *      a2-a15=args to cmd in a1
 221          * out: (u32)a0=status of proxied cmd
 222          *      a1-a15=out args of proxied cmd */
 223         CMD_PROXY_BY_BDF =  _CMDC(_CMD_DIR_RW, _CMD_VTYPE_ALL, 42),
 224
 225         /*
 226          * As for BY_BDF except a0 is index of hvnlink subordinate vnic
 227          * or SR-IOV virtual vnic
 228          */
 229         CMD_PROXY_BY_INDEX =    _CMDC(_CMD_DIR_RW, _CMD_VTYPE_ALL, 43),
 230
 231         /*
 232          * For HPP toggle:
 233          * adapter-info-get
 234          * in:  (u64)a0=phsical address of buffer passed in from caller.
 235          *      (u16)a1=size of buffer specified in a0.
 236          * out: (u64)a0=phsical address of buffer passed in from caller.
 237          *      (u16)a1=actual bytes from VIF-CONFIG-INFO TLV, or
 238          *              0 if no VIF-CONFIG-INFO TLV was ever received. */
 239         CMD_CONFIG_INFO_GET = _CMDC(_CMD_DIR_RW, _CMD_VTYPE_ALL, 44),
 240
 241         /*
 242          * INT13 API: (u64)a0=paddr to vnic_int13_params struct
 243          *            (u32)a1=INT13_CMD_xxx
 244          */
 245         CMD_INT13_ALL = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 45),
 246
 247         /*
 248          * Set default vlan:
 249          * in: (u16)a0=new default vlan
 250          *     (u16)a1=zero for overriding vlan with param a0,
 251          *             non-zero for resetting vlan to the default
 252          * out: (u16)a0=old default vlan
 253          */
 254         CMD_SET_DEFAULT_VLAN = _CMDC(_CMD_DIR_RW, _CMD_VTYPE_ALL, 46),
 255
 256         /* init_prov_info2:
 257          * Variant of CMD_INIT_PROV_INFO, where it will not try to enable
 258          * the vnic until CMD_ENABLE2 is issued.
 259          *     (u64)a0=paddr of vnic_devcmd_provinfo
 260          *     (u32)a1=sizeof provision info
 261          */
 262         CMD_INIT_PROV_INFO2  = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 47),
 263
 264         /* enable2:
 265          *      (u32)a0=0                  ==> standby
 266          *             =CMD_ENABLE2_ACTIVE ==> active
 267          */
 268         CMD_ENABLE2 = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 48),
 269
 270         /*
 271          * cmd_status:
 272          *     Returns the status of the specified command
 273          * Input:
 274          *     a0 = command for which status is being queried.
 275          *          Possible values are:
 276          *              CMD_SOFT_RESET
 277          *              CMD_HANG_RESET
 278          *              CMD_OPEN
 279          *              CMD_INIT
 280          *              CMD_INIT_PROV_INFO
 281          *              CMD_DEINIT
 282          *              CMD_INIT_PROV_INFO2
 283          *              CMD_ENABLE2
 284          * Output:
 285          *     if status == STAT_ERROR
 286          *        a0 = ERR_ENOTSUPPORTED - status for command in a0 is
 287          *                                 not supported
 288          *     if status == STAT_NONE
 289          *        a0 = status of the devcmd specified in a0 as follows.
 290          *             ERR_SUCCESS   - command in a0 completed successfully
 291          *             ERR_EINPROGRESS - command in a0 is still in progress
 292          */
 293         CMD_STATUS = _CMDC(_CMD_DIR_RW, _CMD_VTYPE_ALL, 49),
 294
 295         /*
 296          * Returns interrupt coalescing timer conversion factors.
 297          * After calling this devcmd, ENIC driver can convert
 298          * interrupt coalescing timer in usec into CPU cycles as follows:
 299          *
 300          *   intr_timer_cycles = intr_timer_usec * multiplier / divisor
 301          *
 302          * Interrupt coalescing timer in usecs can be be converted/obtained
 303          * from CPU cycles as follows:
 304          *
 305          *   intr_timer_usec = intr_timer_cycles * divisor / multiplier
 306          *
 307          * in: none
 308          * out: (u32)a0 = multiplier
 309          *      (u32)a1 = divisor
 310          *      (u32)a2 = maximum timer value in usec
 311          */
 312         CMD_INTR_COAL_CONVERT = _CMDC(_CMD_DIR_READ, _CMD_VTYPE_ALL, 50),
 313
 314         /*
 315          * ISCSI DUMP API:
 316          * in: (u64)a0=paddr of the param or param itself
 317          *     (u32)a1=ISCSI_CMD_xxx
 318          */
 319         CMD_ISCSI_DUMP_REQ = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 51),
 320
 321         /*
 322          * ISCSI DUMP STATUS API:
 323          * in: (u32)a0=cmd tag
 324          * in: (u32)a1=ISCSI_CMD_xxx
 325          * out: (u32)a0=cmd status
 326          */
 327         CMD_ISCSI_DUMP_STATUS = _CMDC(_CMD_DIR_RW, _CMD_VTYPE_ALL, 52),
 328
 329         /*
 330          * Subvnic migration from MQ <--> VF.
 331          * Enable the LIF migration from MQ to VF and vice versa. MQ and VF
 332          * indexes are statically bound at the time of initialization.
 333          * Based on the
 334          * direction of migration, the resources of either MQ or the VF shall
 335          * be attached to the LIF.
 336          * in:        (u32)a0=Direction of Migration
 337          *                                      0=> Migrate to VF
 338          *                                      1=> Migrate to MQ
 339          *            (u32)a1=VF index (MQ index)
 340          */
 341         CMD_MIGRATE_SUBVNIC = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 53),
 342
 343         /*
 344          * Register / Deregister the notification block for MQ subvnics
 345          * in:
 346          *   (u64)a0=paddr to notify (set paddr=0 to unset)
 347          *   (u32)a1 & 0x00000000ffffffff=sizeof(struct vnic_devcmd_notify)
 348          *   (u16)a1 & 0x0000ffff00000000=intr num (-1 for no intr)
 349          * out:
 350          *   (u32)a1 = effective size
 351          */
 352         CMD_SUBVNIC_NOTIFY = _CMDC(_CMD_DIR_RW, _CMD_VTYPE_ALL, 54),
 353
 354         /*
 355          * Set the predefined mac address as default
 356          * in:
 357          *   (u48)a0=mac addr
 358          */
 359         CMD_SET_MAC_ADDR = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 55),
 360
 361         /* Update the provisioning info of the given VIF
 362          *     (u64)a0=paddr of vnic_devcmd_provinfo
 363          *     (u32)a1=sizeof provision info
 364          */
 365         CMD_PROV_INFO_UPDATE = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 56),
 366
 367         /*
 368          * Initialization for the devcmd2 interface.
 369          * in: (u64) a0=host result buffer physical address
 370          * in: (u16) a1=number of entries in result buffer
 371          */
 372         CMD_INITIALIZE_DEVCMD2 = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 57)
 373 };
 374
 375 /* flags for CMD_OPEN */
 376 #define CMD_OPENF_OPROM         0x1     /* open coming from option rom */
 377
 378 #define CMD_OPENF_RQ_ENABLE_THEN_POST   0x2
 379
 380 /* flags for CMD_INIT */
 381 #define CMD_INITF_DEFAULT_MAC   0x1     /* init with default mac addr */
 382
 383 /* flags for CMD_PACKET_FILTER */
 384 #define CMD_PFILTER_DIRECTED            0x01
 385 #define CMD_PFILTER_MULTICAST           0x02
 386 #define CMD_PFILTER_BROADCAST           0x04
 387 #define CMD_PFILTER_PROMISCUOUS         0x08
 388 #define CMD_PFILTER_ALL_MULTICAST       0x10
 389
 390 enum vnic_devcmd_status {
 391         STAT_NONE = 0,
 392         STAT_BUSY = 1 << 0,     /* cmd in progress */
 393         STAT_ERROR = 1 << 1,    /* last cmd caused error (code in a0) */
 394 };
 395
 396 enum vnic_devcmd_error {
 397         ERR_SUCCESS = 0,
 398         ERR_EINVAL = 1,
 399         ERR_EFAULT = 2,
 400         ERR_EPERM = 3,
 401         ERR_EBUSY = 4,
 402         ERR_ECMDUNKNOWN = 5,
 403         ERR_EBADSTATE = 6,
 404         ERR_ENOMEM = 7,
 405         ERR_ETIMEDOUT = 8,
 406         ERR_ELINKDOWN = 9,
 407 };
 408
 409 struct vnic_devcmd_fw_info {
 410         char fw_version[32];
 411         char fw_build[32];
 412         char hw_version[32];
 413         char hw_serial_number[32];
 414 };
 415
 416 struct vnic_devcmd_notify {
 417         u32 csum;               /* checksum over following words */
 418
 419         u32 link_state;         /* link up == 1 */
 420         u32 port_speed;         /* effective port speed (rate limit) */
 421         u32 mtu;                /* MTU */
 422         u32 msglvl;             /* requested driver msg lvl */
 423         u32 uif;                /* uplink interface */
 424         u32 status;             /* status bits (see VNIC_STF_*) */
 425         u32 error;              /* error code (see ERR_*) for first ERR */
 426         u32 link_down_cnt;      /* running count of link down transitions */
 427 };
 428 #define VNIC_STF_FATAL_ERR      0x0001  /* fatal fw error */
 429
 430 struct vnic_devcmd_provinfo {
 431         u8 oui[3];
 432         u8 type;
 433         u8 data[];
 434 };
 435
 436 /*
 437  * Writing cmd register causes STAT_BUSY to get set in status register.
 438  * When cmd completes, STAT_BUSY will be cleared.
 439  *
 440  * If cmd completed successfully STAT_ERROR will be clear
 441  * and args registers contain cmd-specific results.
 442  *
 443  * If cmd error, STAT_ERROR will be set and args[0] contains error code.
 444  *
 445  * status register is read-only.  While STAT_BUSY is set,
 446  * all other register contents are read-only.
 447  */
 448
 449 /* Make sizeof(vnic_devcmd) a power-of-2 for I/O BAR. */
 450 #define VNIC_DEVCMD_NARGS 15
 451 struct vnic_devcmd {
 452         u32 status;                     /* RO */
 453         u32 cmd;                        /* RW */
 454         u64 args[VNIC_DEVCMD_NARGS];    /* RW cmd args (little-endian) */
 455 };
 456
 457 /*
 458  * Version 2 of the interface.
 459  *
 460  * Some things are carried over, notably the vnic_devcmd_cmd enum.
 461  */
 462
 463 /*
 464  * Flags for vnic_devcmd2.flags
 465  */
 466
 467 #define DEVCMD2_FNORESULT       0x1 /* Don't copy result to host */
 468
 469 #define VNIC_DEVCMD2_NARGS                      VNIC_DEVCMD_NARGS
 470
 471 struct vnic_devcmd2 {
 472         u16 pad;
 473         u16 flags;
 474         u32 cmd;                /* same command #defines as original */
 475         u64 args[VNIC_DEVCMD2_NARGS];
 476 };
 477
 478 #define VNIC_DEVCMD2_NRESULTS                   VNIC_DEVCMD_NARGS
 479 struct devcmd2_result {
 480         u64 results[VNIC_DEVCMD2_NRESULTS];
 481         u32 pad;
 482         u16 completed_index;    /* into copy WQ */
 483         u8  error;              /* same error codes as original */
 484         u8  color;              /* 0 or 1 as with completion queues */
 485 };
 486
 487 #define DEVCMD2_RING_SIZE                       32
 488 #define DEVCMD2_DESC_SIZE                       128
 489
 490 #define DEVCMD2_RESULTS_SIZE_MAX                ((1 << 16) - 1)
 491
 492 #endif /* _VNIC_DEVCMD_H_ */