linux/drivers/scsi/fnic/vnic_devcmd.h
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   1/*
   2 * Copyright 2008 Cisco Systems, Inc.  All rights reserved.
   3 * Copyright 2007 Nuova Systems, Inc.  All rights reserved.
   4 *
   5 * This program is free software; you may redistribute it and/or modify
   6 * it under the terms of the GNU General Public License as published by
   7 * the Free Software Foundation; version 2 of the License.
   8 *
   9 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  10 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  11 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  12 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  13 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  14 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  15 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  16 * SOFTWARE.
  17 */
  18#ifndef _VNIC_DEVCMD_H_
  19#define _VNIC_DEVCMD_H_
  20
  21#define _CMD_NBITS      14
  22#define _CMD_VTYPEBITS  10
  23#define _CMD_FLAGSBITS  6
  24#define _CMD_DIRBITS    2
  25
  26#define _CMD_NMASK      ((1 << _CMD_NBITS)-1)
  27#define _CMD_VTYPEMASK  ((1 << _CMD_VTYPEBITS)-1)
  28#define _CMD_FLAGSMASK  ((1 << _CMD_FLAGSBITS)-1)
  29#define _CMD_DIRMASK    ((1 << _CMD_DIRBITS)-1)
  30
  31#define _CMD_NSHIFT     0
  32#define _CMD_VTYPESHIFT (_CMD_NSHIFT+_CMD_NBITS)
  33#define _CMD_FLAGSSHIFT (_CMD_VTYPESHIFT+_CMD_VTYPEBITS)
  34#define _CMD_DIRSHIFT   (_CMD_FLAGSSHIFT+_CMD_FLAGSBITS)
  35
  36/*
  37 * Direction bits (from host perspective).
  38 */
  39#define _CMD_DIR_NONE   0U
  40#define _CMD_DIR_WRITE  1U
  41#define _CMD_DIR_READ   2U
  42#define _CMD_DIR_RW     (_CMD_DIR_WRITE | _CMD_DIR_READ)
  43
  44/*
  45 * Flag bits.
  46 */
  47#define _CMD_FLAGS_NONE 0U
  48#define _CMD_FLAGS_NOWAIT 1U
  49
  50/*
  51 * vNIC type bits.
  52 */
  53#define _CMD_VTYPE_NONE  0U
  54#define _CMD_VTYPE_ENET  1U
  55#define _CMD_VTYPE_FC    2U
  56#define _CMD_VTYPE_SCSI  4U
  57#define _CMD_VTYPE_ALL   (_CMD_VTYPE_ENET | _CMD_VTYPE_FC | _CMD_VTYPE_SCSI)
  58
  59/*
  60 * Used to create cmds..
  61*/
  62#define _CMDCF(dir, flags, vtype, nr)  \
  63        (((dir)   << _CMD_DIRSHIFT) | \
  64        ((flags) << _CMD_FLAGSSHIFT) | \
  65        ((vtype) << _CMD_VTYPESHIFT) | \
  66        ((nr)    << _CMD_NSHIFT))
  67#define _CMDC(dir, vtype, nr)    _CMDCF(dir, 0, vtype, nr)
  68#define _CMDCNW(dir, vtype, nr)  _CMDCF(dir, _CMD_FLAGS_NOWAIT, vtype, nr)
  69
  70/*
  71 * Used to decode cmds..
  72*/
  73#define _CMD_DIR(cmd)            (((cmd) >> _CMD_DIRSHIFT) & _CMD_DIRMASK)
  74#define _CMD_FLAGS(cmd)          (((cmd) >> _CMD_FLAGSSHIFT) & _CMD_FLAGSMASK)
  75#define _CMD_VTYPE(cmd)          (((cmd) >> _CMD_VTYPESHIFT) & _CMD_VTYPEMASK)
  76#define _CMD_N(cmd)              (((cmd) >> _CMD_NSHIFT) & _CMD_NMASK)
  77
  78enum vnic_devcmd_cmd {
  79        CMD_NONE                = _CMDC(_CMD_DIR_NONE, _CMD_VTYPE_NONE, 0),
  80
  81        /* mcpu fw info in mem: (u64)a0=paddr to struct vnic_devcmd_fw_info */
  82        CMD_MCPU_FW_INFO        = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 1),
  83
  84        /* dev-specific block member:
  85         *    in: (u16)a0=offset,(u8)a1=size
  86         *    out: a0=value */
  87        CMD_DEV_SPEC            = _CMDC(_CMD_DIR_RW, _CMD_VTYPE_ALL, 2),
  88
  89        /* stats clear */
  90        CMD_STATS_CLEAR         = _CMDCNW(_CMD_DIR_NONE, _CMD_VTYPE_ALL, 3),
  91
  92        /* stats dump in mem: (u64)a0=paddr to stats area,
  93         *                    (u16)a1=sizeof stats area */
  94        CMD_STATS_DUMP          = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 4),
  95
  96        /* set Rx packet filter: (u32)a0=filters (see CMD_PFILTER_*) */
  97        CMD_PACKET_FILTER       = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 7),
  98
  99        /* hang detection notification */
 100        CMD_HANG_NOTIFY         = _CMDC(_CMD_DIR_NONE, _CMD_VTYPE_ALL, 8),
 101
 102        /* MAC address in (u48)a0 */
 103        CMD_MAC_ADDR            = _CMDC(_CMD_DIR_READ,
 104                                        _CMD_VTYPE_ENET | _CMD_VTYPE_FC, 9),
 105
 106        /* disable/enable promisc mode: (u8)a0=0/1 */
 107/***** XXX DEPRECATED *****/
 108        CMD_PROMISC_MODE        = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 10),
 109
 110        /* disable/enable all-multi mode: (u8)a0=0/1 */
 111/***** XXX DEPRECATED *****/
 112        CMD_ALLMULTI_MODE       = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 11),
 113
 114        /* add addr from (u48)a0 */
 115        CMD_ADDR_ADD            = _CMDCNW(_CMD_DIR_WRITE,
 116                                        _CMD_VTYPE_ENET | _CMD_VTYPE_FC, 12),
 117
 118        /* del addr from (u48)a0 */
 119        CMD_ADDR_DEL            = _CMDCNW(_CMD_DIR_WRITE,
 120                                        _CMD_VTYPE_ENET | _CMD_VTYPE_FC, 13),
 121
 122        /* add VLAN id in (u16)a0 */
 123        CMD_VLAN_ADD            = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 14),
 124
 125        /* del VLAN id in (u16)a0 */
 126        CMD_VLAN_DEL            = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 15),
 127
 128        /* nic_cfg in (u32)a0 */
 129        CMD_NIC_CFG             = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 16),
 130
 131        /* union vnic_rss_key in mem: (u64)a0=paddr, (u16)a1=len */
 132        CMD_RSS_KEY             = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 17),
 133
 134        /* union vnic_rss_cpu in mem: (u64)a0=paddr, (u16)a1=len */
 135        CMD_RSS_CPU             = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 18),
 136
 137        /* initiate softreset */
 138        CMD_SOFT_RESET          = _CMDCNW(_CMD_DIR_NONE, _CMD_VTYPE_ALL, 19),
 139
 140        /* softreset status:
 141         *    out: a0=0 reset complete, a0=1 reset in progress */
 142        CMD_SOFT_RESET_STATUS   = _CMDC(_CMD_DIR_READ, _CMD_VTYPE_ALL, 20),
 143
 144        /* set struct vnic_devcmd_notify buffer in mem:
 145         * in:
 146         *   (u64)a0=paddr to notify (set paddr=0 to unset)
 147         *   (u32)a1 & 0x00000000ffffffff=sizeof(struct vnic_devcmd_notify)
 148         *   (u16)a1 & 0x0000ffff00000000=intr num (-1 for no intr)
 149         * out:
 150         *   (u32)a1 = effective size
 151         */
 152        CMD_NOTIFY              = _CMDC(_CMD_DIR_RW, _CMD_VTYPE_ALL, 21),
 153
 154        /* UNDI API: (u64)a0=paddr to s_PXENV_UNDI_ struct,
 155         *           (u8)a1=PXENV_UNDI_xxx */
 156        CMD_UNDI                = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 22),
 157
 158        /* initiate open sequence (u32)a0=flags (see CMD_OPENF_*) */
 159        CMD_OPEN                = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 23),
 160
 161        /* open status:
 162         *    out: a0=0 open complete, a0=1 open in progress */
 163        CMD_OPEN_STATUS         = _CMDC(_CMD_DIR_READ, _CMD_VTYPE_ALL, 24),
 164
 165        /* close vnic */
 166        CMD_CLOSE               = _CMDC(_CMD_DIR_NONE, _CMD_VTYPE_ALL, 25),
 167
 168        /* initialize virtual link: (u32)a0=flags (see CMD_INITF_*) */
 169        CMD_INIT                = _CMDCNW(_CMD_DIR_READ, _CMD_VTYPE_ALL, 26),
 170
 171        /* variant of CMD_INIT, with provisioning info
 172         *     (u64)a0=paddr of vnic_devcmd_provinfo
 173         *     (u32)a1=sizeof provision info
 174         */
 175        CMD_INIT_PROV_INFO      = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 27),
 176
 177        /* enable virtual link */
 178        CMD_ENABLE              = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 28),
 179
 180        /* disable virtual link */
 181        CMD_DISABLE             = _CMDC(_CMD_DIR_NONE, _CMD_VTYPE_ALL, 29),
 182
 183        /* stats dump all vnics on uplink in mem: (u64)a0=paddr (u32)a1=uif */
 184        CMD_STATS_DUMP_ALL      = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 30),
 185
 186        /* init status:
 187         *    out: a0=0 init complete, a0=1 init in progress
 188         *         if a0=0, a1=errno */
 189        CMD_INIT_STATUS         = _CMDC(_CMD_DIR_READ, _CMD_VTYPE_ALL, 31),
 190
 191        /* INT13 API: (u64)a0=paddr to vnic_int13_params struct
 192         *            (u8)a1=INT13_CMD_xxx */
 193        CMD_INT13               = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_FC, 32),
 194
 195        /* logical uplink enable/disable: (u64)a0: 0/1=disable/enable */
 196        CMD_LOGICAL_UPLINK      = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 33),
 197
 198        /* undo initialize of virtual link */
 199        CMD_DEINIT              = _CMDCNW(_CMD_DIR_NONE, _CMD_VTYPE_ALL, 34),
 200
 201        /* check fw capability of a cmd:
 202         * in:  (u32)a0=cmd
 203         * out: (u32)a0=errno, 0:valid cmd, a1=supported VNIC_STF_* bits */
 204        CMD_CAPABILITY      = _CMDC(_CMD_DIR_RW, _CMD_VTYPE_ALL, 36),
 205
 206        /* persistent binding info
 207         * in:  (u64)a0=paddr of arg
 208         *      (u32)a1=CMD_PERBI_XXX */
 209        CMD_PERBI       = _CMDC(_CMD_DIR_RW, _CMD_VTYPE_FC, 37),
 210
 211        /* Interrupt Assert Register functionality
 212         * in: (u16)a0=interrupt number to assert
 213         */
 214        CMD_IAR         = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 38),
 215
 216        /* initiate hangreset, like softreset after hang detected */
 217        CMD_HANG_RESET      = _CMDC(_CMD_DIR_NONE, _CMD_VTYPE_ALL, 39),
 218
 219        /* hangreset status:
 220         *    out: a0=0 reset complete, a0=1 reset in progress */
 221        CMD_HANG_RESET_STATUS   = _CMDC(_CMD_DIR_READ, _CMD_VTYPE_ALL, 40),
 222
 223        /*
 224         * Set hw ingress packet vlan rewrite mode:
 225         * in:  (u32)a0=new vlan rewrite mode
 226         * out: (u32)a0=old vlan rewrite mode */
 227        CMD_IG_VLAN_REWRITE_MODE = _CMDC(_CMD_DIR_RW, _CMD_VTYPE_ENET, 41),
 228
 229        /*
 230         * in:  (u16)a0=bdf of target vnic
 231         *      (u32)a1=cmd to proxy
 232         *      a2-a15=args to cmd in a1
 233         * out: (u32)a0=status of proxied cmd
 234         *      a1-a15=out args of proxied cmd */
 235        CMD_PROXY_BY_BDF =  _CMDC(_CMD_DIR_RW, _CMD_VTYPE_ALL, 42),
 236
 237        /*
 238         * As for BY_BDF except a0 is index of hvnlink subordinate vnic
 239         * or SR-IOV virtual vnic
 240         */
 241        CMD_PROXY_BY_INDEX =    _CMDC(_CMD_DIR_RW, _CMD_VTYPE_ALL, 43),
 242
 243        /*
 244         * For HPP toggle:
 245         * adapter-info-get
 246         * in:  (u64)a0=phsical address of buffer passed in from caller.
 247         *      (u16)a1=size of buffer specified in a0.
 248         * out: (u64)a0=phsical address of buffer passed in from caller.
 249         *      (u16)a1=actual bytes from VIF-CONFIG-INFO TLV, or
 250         *              0 if no VIF-CONFIG-INFO TLV was ever received. */
 251        CMD_CONFIG_INFO_GET = _CMDC(_CMD_DIR_RW, _CMD_VTYPE_ALL, 44),
 252
 253        /*
 254         * INT13 API: (u64)a0=paddr to vnic_int13_params struct
 255         *            (u32)a1=INT13_CMD_xxx
 256         */
 257        CMD_INT13_ALL = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 45),
 258
 259        /*
 260         * Set default vlan:
 261         * in: (u16)a0=new default vlan
 262         *     (u16)a1=zero for overriding vlan with param a0,
 263         *             non-zero for resetting vlan to the default
 264         * out: (u16)a0=old default vlan
 265         */
 266        CMD_SET_DEFAULT_VLAN = _CMDC(_CMD_DIR_RW, _CMD_VTYPE_ALL, 46),
 267
 268        /* init_prov_info2:
 269         * Variant of CMD_INIT_PROV_INFO, where it will not try to enable
 270         * the vnic until CMD_ENABLE2 is issued.
 271         *     (u64)a0=paddr of vnic_devcmd_provinfo
 272         *     (u32)a1=sizeof provision info
 273         */
 274        CMD_INIT_PROV_INFO2  = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 47),
 275
 276        /* enable2:
 277         *      (u32)a0=0                  ==> standby
 278         *             =CMD_ENABLE2_ACTIVE ==> active
 279         */
 280        CMD_ENABLE2 = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 48),
 281
 282        /*
 283         * cmd_status:
 284         *     Returns the status of the specified command
 285         * Input:
 286         *     a0 = command for which status is being queried.
 287         *          Possible values are:
 288         *              CMD_SOFT_RESET
 289         *              CMD_HANG_RESET
 290         *              CMD_OPEN
 291         *              CMD_INIT
 292         *              CMD_INIT_PROV_INFO
 293         *              CMD_DEINIT
 294         *              CMD_INIT_PROV_INFO2
 295         *              CMD_ENABLE2
 296         * Output:
 297         *     if status == STAT_ERROR
 298         *        a0 = ERR_ENOTSUPPORTED - status for command in a0 is
 299         *                                 not supported
 300         *     if status == STAT_NONE
 301         *        a0 = status of the devcmd specified in a0 as follows.
 302         *             ERR_SUCCESS   - command in a0 completed successfully
 303         *             ERR_EINPROGRESS - command in a0 is still in progress
 304         */
 305        CMD_STATUS = _CMDC(_CMD_DIR_RW, _CMD_VTYPE_ALL, 49),
 306
 307        /*
 308         * Returns interrupt coalescing timer conversion factors.
 309         * After calling this devcmd, ENIC driver can convert
 310         * interrupt coalescing timer in usec into CPU cycles as follows:
 311         *
 312         *   intr_timer_cycles = intr_timer_usec * multiplier / divisor
 313         *
 314         * Interrupt coalescing timer in usecs can be be converted/obtained
 315         * from CPU cycles as follows:
 316         *
 317         *   intr_timer_usec = intr_timer_cycles * divisor / multiplier
 318         *
 319         * in: none
 320         * out: (u32)a0 = multiplier
 321         *      (u32)a1 = divisor
 322         *      (u32)a2 = maximum timer value in usec
 323         */
 324        CMD_INTR_COAL_CONVERT = _CMDC(_CMD_DIR_READ, _CMD_VTYPE_ALL, 50),
 325
 326        /*
 327         * ISCSI DUMP API:
 328         * in: (u64)a0=paddr of the param or param itself
 329         *     (u32)a1=ISCSI_CMD_xxx
 330         */
 331        CMD_ISCSI_DUMP_REQ = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 51),
 332
 333        /*
 334         * ISCSI DUMP STATUS API:
 335         * in: (u32)a0=cmd tag
 336         * in: (u32)a1=ISCSI_CMD_xxx
 337         * out: (u32)a0=cmd status
 338         */
 339        CMD_ISCSI_DUMP_STATUS = _CMDC(_CMD_DIR_RW, _CMD_VTYPE_ALL, 52),
 340
 341        /*
 342         * Subvnic migration from MQ <--> VF.
 343         * Enable the LIF migration from MQ to VF and vice versa. MQ and VF
 344         * indexes are statically bound at the time of initialization.
 345         * Based on the
 346         * direction of migration, the resources of either MQ or the VF shall
 347         * be attached to the LIF.
 348         * in:        (u32)a0=Direction of Migration
 349         *                                      0=> Migrate to VF
 350         *                                      1=> Migrate to MQ
 351         *            (u32)a1=VF index (MQ index)
 352         */
 353        CMD_MIGRATE_SUBVNIC = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 53),
 354
 355        /*
 356         * Register / Deregister the notification block for MQ subvnics
 357         * in:
 358         *   (u64)a0=paddr to notify (set paddr=0 to unset)
 359         *   (u32)a1 & 0x00000000ffffffff=sizeof(struct vnic_devcmd_notify)
 360         *   (u16)a1 & 0x0000ffff00000000=intr num (-1 for no intr)
 361         * out:
 362         *   (u32)a1 = effective size
 363         */
 364        CMD_SUBVNIC_NOTIFY = _CMDC(_CMD_DIR_RW, _CMD_VTYPE_ALL, 54),
 365
 366        /*
 367         * Set the predefined mac address as default
 368         * in:
 369         *   (u48)a0=mac addr
 370         */
 371        CMD_SET_MAC_ADDR = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 55),
 372
 373        /* Update the provisioning info of the given VIF
 374         *     (u64)a0=paddr of vnic_devcmd_provinfo
 375         *     (u32)a1=sizeof provision info
 376         */
 377        CMD_PROV_INFO_UPDATE = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 56),
 378
 379        /*
 380         * Initialization for the devcmd2 interface.
 381         * in: (u64) a0=host result buffer physical address
 382         * in: (u16) a1=number of entries in result buffer
 383         */
 384        CMD_INITIALIZE_DEVCMD2 = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 57)
 385};
 386
 387/* flags for CMD_OPEN */
 388#define CMD_OPENF_OPROM         0x1     /* open coming from option rom */
 389
 390#define CMD_OPENF_RQ_ENABLE_THEN_POST   0x2
 391
 392/* flags for CMD_INIT */
 393#define CMD_INITF_DEFAULT_MAC   0x1     /* init with default mac addr */
 394
 395/* flags for CMD_PACKET_FILTER */
 396#define CMD_PFILTER_DIRECTED            0x01
 397#define CMD_PFILTER_MULTICAST           0x02
 398#define CMD_PFILTER_BROADCAST           0x04
 399#define CMD_PFILTER_PROMISCUOUS         0x08
 400#define CMD_PFILTER_ALL_MULTICAST       0x10
 401
 402enum vnic_devcmd_status {
 403        STAT_NONE = 0,
 404        STAT_BUSY = 1 << 0,     /* cmd in progress */
 405        STAT_ERROR = 1 << 1,    /* last cmd caused error (code in a0) */
 406};
 407
 408enum vnic_devcmd_error {
 409        ERR_SUCCESS = 0,
 410        ERR_EINVAL = 1,
 411        ERR_EFAULT = 2,
 412        ERR_EPERM = 3,
 413        ERR_EBUSY = 4,
 414        ERR_ECMDUNKNOWN = 5,
 415        ERR_EBADSTATE = 6,
 416        ERR_ENOMEM = 7,
 417        ERR_ETIMEDOUT = 8,
 418        ERR_ELINKDOWN = 9,
 419};
 420
 421struct vnic_devcmd_fw_info {
 422        char fw_version[32];
 423        char fw_build[32];
 424        char hw_version[32];
 425        char hw_serial_number[32];
 426};
 427
 428struct vnic_devcmd_notify {
 429        u32 csum;               /* checksum over following words */
 430
 431        u32 link_state;         /* link up == 1 */
 432        u32 port_speed;         /* effective port speed (rate limit) */
 433        u32 mtu;                /* MTU */
 434        u32 msglvl;             /* requested driver msg lvl */
 435        u32 uif;                /* uplink interface */
 436        u32 status;             /* status bits (see VNIC_STF_*) */
 437        u32 error;              /* error code (see ERR_*) for first ERR */
 438        u32 link_down_cnt;      /* running count of link down transitions */
 439};
 440#define VNIC_STF_FATAL_ERR      0x0001  /* fatal fw error */
 441
 442struct vnic_devcmd_provinfo {
 443        u8 oui[3];
 444        u8 type;
 445        u8 data[];
 446};
 447
 448/*
 449 * Writing cmd register causes STAT_BUSY to get set in status register.
 450 * When cmd completes, STAT_BUSY will be cleared.
 451 *
 452 * If cmd completed successfully STAT_ERROR will be clear
 453 * and args registers contain cmd-specific results.
 454 *
 455 * If cmd error, STAT_ERROR will be set and args[0] contains error code.
 456 *
 457 * status register is read-only.  While STAT_BUSY is set,
 458 * all other register contents are read-only.
 459 */
 460
 461/* Make sizeof(vnic_devcmd) a power-of-2 for I/O BAR. */
 462#define VNIC_DEVCMD_NARGS 15
 463struct vnic_devcmd {
 464        u32 status;                     /* RO */
 465        u32 cmd;                        /* RW */
 466        u64 args[VNIC_DEVCMD_NARGS];    /* RW cmd args (little-endian) */
 467};
 468
 469/*
 470 * Version 2 of the interface.
 471 *
 472 * Some things are carried over, notably the vnic_devcmd_cmd enum.
 473 */
 474
 475/*
 476 * Flags for vnic_devcmd2.flags
 477 */
 478
 479#define DEVCMD2_FNORESULT       0x1 /* Don't copy result to host */
 480
 481#define VNIC_DEVCMD2_NARGS                      VNIC_DEVCMD_NARGS
 482
 483struct vnic_devcmd2 {
 484        u16 pad;
 485        u16 flags;
 486        u32 cmd;                /* same command #defines as original */
 487        u64 args[VNIC_DEVCMD2_NARGS];
 488};
 489
 490#define VNIC_DEVCMD2_NRESULTS                   VNIC_DEVCMD_NARGS
 491struct devcmd2_result {
 492        u64 results[VNIC_DEVCMD2_NRESULTS];
 493        u32 pad;
 494        u16 completed_index;    /* into copy WQ */
 495        u8  error;              /* same error codes as original */
 496        u8  color;              /* 0 or 1 as with completion queues */
 497};
 498
 499#define DEVCMD2_RING_SIZE                       32
 500#define DEVCMD2_DESC_SIZE                       128
 501
 502#define DEVCMD2_RESULTS_SIZE_MAX                ((1 << 16) - 1)
 503
 504#endif /* _VNIC_DEVCMD_H_ */
 505