/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
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 * CDDL HEADER END
 */

/*
 * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
 */

#ifndef _SYS_IB_ADAPTERS_HERMON_CMD_H
#define _SYS_IB_ADAPTERS_HERMON_CMD_H

/*
 * hermon_cmd.h
 *    Contains all of the prototypes, #defines, and structures necessary
 *    for the Hermon Firmware Command routines.
 *    Specifically it contains the command types, command statuses and flags,
 *    structures used for managing Hermon mailboxes and outstanding commands,
 *    and prototypes for most of the functions consumed by other parts of
 *    the Hermon driver.
 */

#include <sys/types.h>
#include <sys/conf.h>
#include <sys/ddi.h>
#include <sys/sunddi.h>

#include <sys/ib/mgt/sm_attr.h>

#ifdef __cplusplus
extern "C" {
#endif


/*
 * Defines used hermon_write_hcr() to determine the duration and number of
 * times (at maximum) to poll while waiting for a Hermon firmware command to
 * release the HCR resource (i.e. waiting for the command to complete)
 */
#define HERMON_CMD_POLL_DELAY           1
#define HERMON_CMD_POLL_MAX             3000000

/*
 * The following defines specify the default number of mailboxes (log 2) of
 * each type and their size and alignment restrictions.  By default the number
 * of both "In" and "Out" mailboxes is set to 1024 (with each mailbox being
 * 4KB in size), but both the number and sizes of each are controllable
 * through the "hermon_log_num_inmbox", "hermon_log_num_outmbox",
 * "hermon_log_inmbox_size" and "hermon_log_outmbox_size" configuration
 * variables. Also, we have a define that is used to allocate interrupt
 * mailboxes (1 in, 1 out).
 */
#define HERMON_NUM_MAILBOXES_SHIFT      0xA
#define HERMON_NUM_INTR_MAILBOXES_SHIFT 0
#define HERMON_MBOX_SIZE_SHIFT          0xC
#define HERMON_MBOX_SIZE                        (1 << HERMON_MBOX_SIZE_SHIFT)
#define HERMON_MBOX_ALIGN               HERMON_MBOX_SIZE

/*
 * These are the defines for the Hermon command type (opcodes).  They are
 * specified by the Hermon PRM
 */

/* Init Commands */
#define QUERY_DEV_LIM                   0x3
#define QUERY_DEV_CAP                   0x3
#define QUERY_FW                        0x4
#define QUERY_ADAPTER                   0x6
#define INIT_HCA                        0x7
#define CLOSE_HCA                       0x8
#define INIT_IB                         0x9
#define INIT_PORT                       0x9
#define CLOSE_IB                        0xA
#define CLOSE_PORT                      0xA
#define QUERY_HCA                       0xB
#define SET_IB                          0xC
#define SET_PORT                        0xC
/* added late in tavor for SRQ support */
#define MOD_STAT_CFG                    0x34
/* added late in Hermon (PRM 0.35) */
#define QUERY_PORT                      0x43


/* TPT Commands */
#define SW2HW_MPT                       0xD
#define QUERY_MPT                       0xE
#define HW2SW_MPT                       0xF
#define READ_MTT                        0x10
#define WRITE_MTT                       0x11
#define SYNC_TPT                        0x2F
#define MODIFY_MPT                      0x39

/* EQ Commands */
#define MAP_EQ                          0x12
#define SW2HW_EQ                        0x13
#define HW2SW_EQ                        0x14
#define QUERY_EQ                        0x15

/* CQ Commands */
#define SW2HW_CQ                        0x16
#define HW2SW_CQ                        0x17
#define QUERY_CQ                        0x18
#define MODIFY_CQ                       0x2C

/* Modify CQ Command - opcode modifiers */
#define RESIZE_CQ                       0x0
#define MODIFY_MODERATION_CQ            0x1
#define MODIFY_EQN                      0x2

/* QP Commands */
#define RST2INIT_QP                     0x19
#define INIT2INIT_QP                    0x2D
#define INIT2RTR_QP                     0x1A
#define RTR2RTS_QP                      0x1B
#define RTS2RTS_QP                      0x1C
#define SQERR2RTS_QP                    0x1D
#define TOERR_QP                        0x1E
#define RTS2SQD_QP                      0x1F
#define SQD2SQD_QP                      0x38
#define SQD2RTS_QP                      0x20
#define TORST_QP                        0x21
#define QUERY_QP                        0x22
#define SUSPEND_QP                      0x32    /* new w/ hermon driver */
#define UNSUSPEND_QP                    0x33    /* new w/ hermon driver */

/* SPECIAL QPs Commands */
#define CONF_SPECIAL_QP                 0x23
#define MAD_IFC                         0x24

/* added late in tavor for SRQ support */
/* SRQ Commands */
#define SW2HW_SRQ                       0x35
#define HW2SW_SRQ                       0x36
#define QUERY_SRQ                       0x37
/* new in hermon, replaces part of modify MPT */
#define RESIZE_SRQ                      0X44
/* new in hermon, set limit water mark */
#define ARM_RQ                          0X40
/* new in hermon (PRM 0.36) configure interrupt moderation */
#define CONFIG_INT_MOD                  0X45
#define HW_HEALTH_CHECK                 0X50

/* Multicast Group Commands */
#define READ_MGM                        0x25
#define READ_MCG                        0x25
#define WRITE_MGM                       0x26
#define WRITE_MCG                       0x26
#define MGID_HASH                       0x27

/* Debug/Diagnostic Commands */
#define QUERY_DEBUG_MSG                 0x2A
#define SET_DEBUG_MSG                   0x2B
#define DIAG_RPRT                       0x30
#define CMD_NOP                         0x31

#define SET_VLAN_FLTR                   0x47
#define SET_MCAST_FLTR                  0x48

#define CONFIG_FC                       0x4A
#define QUERY_FC                        0x4B
#define HEART_BEAT_RQ                   0x4C

#define SENSE_PORT                      0x4D

/* ICM and related commands - w/out LAM commands from Arbel */
#define RUN_FW                          0xFF6
#define UNMAP_ICM                       0xFF9
#define MAP_ICM                         0xFFA
#define UNMAP_ICM_AUX                   0xFFB
#define MAP_ICM_AUX                     0xFFC
#define SET_ICM_SIZE                    0xFFD
#define UNMAP_FA                        0xFFE
#define MAP_FA                          0xFFF

/*
 * Commands mentioned but not defined in PRM v35
 *      REL_ICM_AUX
 *      INIT_VM
 */

/*
 * These are the defines for the Hermon command completion statuses.  They are
 * also specified (in part) by the Hermon PRM.  However,
 * the HERMON_CMD_INSUFF_RSRC, HERMON_CMD_TIMEOUT and HERMON_CMD_INVALID_STATUS
 * codes were added for this driver specifically to indicate the conditions
 * when insufficient resources are available for a command, when a command has
 * timed out (failure in the Hermon firmware) or when some other invalid result
 * was received.
 */
#define HERMON_CMD_TIMEOUT_TOGGLE       0xFFFC  /* -4 */
#define HERMON_CMD_INSUFF_RSRC          0xFFFD  /* -3 */
#define HERMON_CMD_TIMEOUT_GOBIT        0xFFFE  /* -2 */
#define HERMON_CMD_INVALID_STATUS       0xFFFF  /* -1 */
#define HERMON_CMD_SUCCESS              0x00
#define HERMON_CMD_INTERNAL_ERR         0x01
#define HERMON_CMD_BAD_OP               0x02
#define HERMON_CMD_BAD_PARAM            0x03
#define HERMON_CMD_BAD_SYS_STATE                0x04
#define HERMON_CMD_BAD_RESOURCE         0x05
#define HERMON_CMD_RESOURCE_BUSY                0x06
#define HERMON_CMD_EXCEED_LIM           0x08
#define HERMON_CMD_BAD_RES_STATE                0x09
#define HERMON_CMD_BAD_INDEX            0x0A
#define HERMON_CMD_BAD_NVMEM            0x0B
#define HERMON_CMD_ICM_ERROR            0x0C
#define HERMON_CMD_BAD_QP_STATE         0x10
#define HERMON_CMD_BAD_SEG_PARAM                0x20
#define HERMON_CMD_REG_BOUND            0x21
#define HERMON_CMD_BAD_PKT              0x30
#define HERMON_CMD_BAD_SIZE             0x40

/*
 * These defines are used in the "special QP" allocation to indicate the type
 * of special QP (SMI, GSI, or one of the raw types).  These values are
 * specified by the Hermon PRM
 */
#define HERMON_CMD_QP_SMI               0
#define HERMON_CMD_QP_GSI               1
#define HERMON_CMD_QP_RAW_IPV6          2
#define HERMON_CMD_QP_RAW_ETH           3

#define HERMON_CMD_SPEC_QP_OPMOD(smi, gsi) \
        ((smi & 0x01) | ((gsi & 0x01) << 1))

/*
 * For certain Hermon QP state transition commands some optional flags are
 * allowed.  These "opmask" flags are defined by the Hermon PRM
 * as a bitmask.
 */

#define HERMON_CMD_OP_ALT_PATH          (1 << 0)
#define HERMON_CMD_OP_RRE               (1 << 1)
#define HERMON_CMD_OP_RAE               (1 << 2)
#define HERMON_CMD_OP_RWE               (1 << 3)
#define HERMON_CMD_OP_PKEYINDX          (1 << 4) /* primary path */
#define HERMON_CMD_OP_QKEY              (1 << 5)
#define HERMON_CMD_OP_MINRNRNAK         (1 << 6)
#define HERMON_CMD_OP_PRIM_PATH         (1 << 7)
#define HERMON_CMD_OP_SRA_SET           (1 << 8)
#define HERMON_CMD_OP_RRA_SET           (1 << 9)
#define HERMON_CMD_OP_PM_STATE          (1 << 10) /* migration */
/* HERMON_CMD_OP_PRIM_PORT is obsolete, instead use HERMON_CMD_OP_SCHEDQUEUE */
#define HERMON_CMD_OP_PRIM_PORT         (1 << 11)
#define HERMON_CMD_OP_RETRYCNT          (1 << 12) /* Global */
#define HERMON_CMD_OP_ALT_RNRRETRY      (1 << 13)
#define HERMON_CMD_OP_ACKTIMEOUT        (1 << 14) /* primary path */
#define HERMON_CMD_OP_PRIM_RNRRETRY     (1 << 15) /* reserved in HERMON */
#define HERMON_CMD_OP_SCHEDQUEUE        (1 << 16)
#define HERMON_CMD_OP_RSSCONTEXT        (1 << 17)
#define HERMON_CMD_OP_SRQN              (1 << 18) /* for rss balancing */
#define HERMON_CMD_OP_CQN_RCV           (1 << 19) /* for rss balancing */
/* Bits 20 - 31 RESERVED - per PRM 0.35c */



/*
 * The Hermon RTS2SQD command can take the following flag as part of its
 * input modifier to request the Send Queue Drained event
 */
#define HERMON_CMD_REQ_SQD_EVENT                0x80000000

/*
 * The Hermon TORST command can take the following flag (as part of a bitmask)
 * in its opcode modifier to request that the transition to reset should
 * not go through the Error state (and, hence, should not generate "flushed-
 * in-error" completions
 */
#define HERMON_CMD_DIRECT_TO_RESET      (1 << 1)

/*
 * Some Hermon commands write an OUT mailbox entry, depending on the value of
 * the 'opmod' parameter.  These defines provide the correct opmod value to
 * write depending on whether to write an entry or not.
 */
#define HERMON_CMD_DO_OUTMBOX           (0)
#define HERMON_CMD_NO_OUTMBOX           (1 << 0)


/*
 * The Hermon MAP_EQ command can take the following flags (and use the
 * HERMON_CMD_UNMAP_EQ_MASK input modifier) to indicate whether the given
 * event queue should mapped to or unmapped from the given event type.
 */


#define HERMON_CMD_MAP_EQ_EVT_MAP       0
#define HERMON_CMD_MAP_EQ_EVT_UNMAP     1
#define HERMON_CMD_UNMAP_EQ_MASK        0x80000000

/*
 * The following defines are used by the MAD_IFC command and the helper
 * routines that get PortInfo, NodeInfo, GUIDInfo, and PKeyTable entries.
 *
 * The first indicates whether of not MKey checking should be enforced.
 * This is passed in the opcode modifier field for MAD_IFC commands.
 *
 * The next set are used to define certain hardcoded management datagram (MAD)
 * sizes, offsets, and header formats for each of the helper operations.
 */
#define HERMON_CMD_MKEY_CHECK           0
#define HERMON_CMD_MKEY_DONTCHECK       1
#define HERMON_CMD_BKEY_DONTCHECK       2

#define HERMON_CMD_MAD_IFC_SIZE         0x100
#define HERMON_CMD_MADDATA_OFFSET       0x40
#define HERMON_CMD_MADHDR0              0x01010101
#define HERMON_CMD_MADHDR1              0x00000000
#define HERMON_CMD_MADHDR2              0x00000000
#define HERMON_CMD_MADHDR3              0x00000000

#define HERMON_CMD_PORTINFO             0x00150000
#define HERMON_CMD_NODEINFO             0x00110000
#define HERMON_CMD_NODEDESC             0x00100000
#define HERMON_CMD_GUIDINFO             0x00140000
#define HERMON_CMD_PKEYTBLE             0x00160000

#define HERMON_CMD_PERF_GET             0x01040101
#define HERMON_CMD_PERF_SET             0x01040102
#define HERMON_CMD_CLASSPORTINFO        0x00010000
#define HERMON_CMD_PERFCNTRS            0x00120000
#define HERMON_CMD_EXTPERFCNTRS         0x001D0000
#define HERMON_CMD_PERFATTR             0x00000000

#define HERMON_IS_EXT_WIDTH_SUPPORTED           0x0000020000000000
#define HERMON_IS_EXT_WIDTH_SUPPORTED_NOIETF    0x0000040000000000


/*
 * The next few defines are used to indicate the size of the "reserved" area
 * in the WRITE_MTT command, and the respective sizes of the SET_PORT and
 * MGID_HASH commands
 */
#define HERMON_CMD_WRITEMTT_RSVD_SZ     0x10
#define HERMON_CMD_SETPORT_SZ           0x8
#define HERMON_CMD_MGIDHASH_SZ          0x10

/*
 * This last define is used by hermon_cmn_ownership_cmd_post() to keep track
 * of the direction (from hardware ownership to software, or vice versa) of
 * the requested operation
 */
#define HERMON_CMD_RSRC_HW2SW           0
#define HERMON_CMD_RSRC_SW2HW           1

/*
 * The following macros are used for handling any endianness related issues
 * that might arise from the Hermon driver's internal use of MADs.
 *
 *    HERMON_GETPORTINFO_SWAP   - All the necessary swapping to handle the
 *                                  response to a GetPortInfo MAD
 *    HERMON_GETNODEINFO_SWAP   - All the necessary swapping to handle the
 *                                  response to a GetNodeInfo MAD
 *    HERMON_GETGUIDINFO_SWAP   - All the necessary swapping to handle the
 *                                  response to a GetGUIDInfo MAD
 *    HERMON_GETPKEYTABLE_SWAP  - All the necessary swapping to handle the
 *                                  response to a GetPKeyTable MAD
 */


#ifdef  _LITTLE_ENDIAN
#define HERMON_GETPORTINFO_SWAP(portinfo)                               \
{                                                                       \
        (portinfo)->M_Key = ddi_swap64((portinfo)->M_Key);              \
        (portinfo)->GidPrefix = ddi_swap64((portinfo)->GidPrefix);      \
        (portinfo)->LID = ddi_swap16((portinfo)->LID);                  \
        (portinfo)->MasterSMLID = ddi_swap16((portinfo)->MasterSMLID);  \
        (portinfo)->CapabilityMask =                                    \
            ddi_swap32((portinfo)->CapabilityMask);                     \
        (portinfo)->DiagCode = ddi_swap16((portinfo)->DiagCode);        \
        (portinfo)->M_KeyLeasePeriod =                                  \
            ddi_swap16((portinfo)->M_KeyLeasePeriod);                   \
        (portinfo)->M_KeyViolations =                                   \
            ddi_swap16((portinfo)->M_KeyViolations);                    \
        (portinfo)->P_KeyViolations =                                   \
            ddi_swap16((portinfo)->P_KeyViolations);                    \
        (portinfo)->Q_KeyViolations =                                   \
            ddi_swap16((portinfo)->Q_KeyViolations);                    \
}
#else
#define HERMON_GETPORTINFO_SWAP(portinfo)
#endif

#ifdef  _LITTLE_ENDIAN
#define HERMON_GETNODEINFO_SWAP(nodeinfo)                               \
{                                                                       \
        uint32_t        tmp;                                            \
                                                                        \
        tmp = ddi_swap32(((uint32_t *)nodeinfo)[9]);                    \
        (nodeinfo)->VendorID     = tmp & 0xFFFFFF;                      \
        (nodeinfo)->LocalPortNum = tmp >> 24;                           \
        (nodeinfo)->Revision     =                                      \
            ddi_swap32(((uint32_t *)nodeinfo)[8]);                      \
        tmp = ddi_swap32(((uint32_t *)nodeinfo)[7]);                    \
        (nodeinfo)->PartitionCap = tmp >> 16;                           \
        (nodeinfo)->DeviceID     = tmp & 0xFFFF;                        \
        (nodeinfo)->PortGUID = ddi_swap64((((uint64_t)                  \
            (((uint32_t *)nodeinfo)[6]) << 32) |                        \
            ((uint32_t *)nodeinfo)[5]));                                \
        (nodeinfo)->NodeGUID = ddi_swap64((((uint64_t)                  \
            (((uint32_t *)nodeinfo)[4]) << 32) |                        \
            ((uint32_t *)nodeinfo)[3]));                                \
        (nodeinfo)->SystemImageGUID = ddi_swap64((((uint64_t)           \
            (((uint32_t *)nodeinfo)[2]) << 32) |                        \
            ((uint32_t *)nodeinfo)[1]));                                \
}
#else
#define HERMON_GETNODEINFO_SWAP(nodeinfo)                               \
{                                                                       \
        uint32_t        tmp;                                            \
                                                                        \
        tmp = ((uint32_t *)nodeinfo)[9];                                \
        (nodeinfo)->VendorID     = tmp & 0xFFFFFF;                      \
        (nodeinfo)->LocalPortNum = tmp >> 24;                           \
        (nodeinfo)->Revision     = ((uint32_t *)nodeinfo)[8];           \
        tmp = ((uint32_t *)nodeinfo)[7];                                \
        (nodeinfo)->PartitionCap = tmp >> 16;                           \
        (nodeinfo)->DeviceID     = tmp & 0xFFFF;                        \
        (nodeinfo)->PortGUID = (((uint64_t)                             \
            (((uint32_t *)nodeinfo)[5]) << 32) |                        \
            ((uint32_t *)nodeinfo)[6]);                                 \
        (nodeinfo)->NodeGUID = (((uint64_t)                             \
            (((uint32_t *)nodeinfo)[3]) << 32) |                        \
            ((uint32_t *)nodeinfo)[4]);                                 \
        (nodeinfo)->SystemImageGUID = (((uint64_t)                      \
            (((uint32_t *)nodeinfo)[1]) << 32) |                        \
            ((uint32_t *)nodeinfo)[2]);                                 \
}
#endif

#ifdef  _LITTLE_ENDIAN
#define HERMON_GETGUIDINFO_SWAP(guidinfo)                               \
{                                                                       \
        int     i;                                                      \
                                                                        \
        for (i = 0; i < 8; i++) {                                       \
                (guidinfo)->GUIDBlocks[i] =                             \
                    ddi_swap64((guidinfo)->GUIDBlocks[i]);              \
        }                                                               \
}
#else
#define HERMON_GETGUIDINFO_SWAP(guidinfo)
#endif

#ifdef  _LITTLE_ENDIAN
#define HERMON_GETPKEYTABLE_SWAP(pkeytable)                             \
{                                                                       \
        int     i;                                                      \
                                                                        \
        for (i = 0; i < 32; i++) {                                      \
                (pkeytable)->P_KeyTableBlocks[i] =                      \
                    ddi_swap16((pkeytable)->P_KeyTableBlocks[i]);       \
        }                                                               \
}
#else
#define HERMON_GETPKEYTABLE_SWAP(pkeytable)
#endif

/*
 * The Hermon MODIFY_MPT command can take the following opcode modifier
 * options to specify whether to modify for ResizeSRQ() or to swap the
 * full MPT entry.
 */
#define HERMON_CMD_MODIFY_MPT_RESIZESRQ 3
#define HERMON_CMD_MODIFY_MPT_SWAPFULL  5

/*
 * Hermon MOD_STAT_CFG Opcode Modifier
 */
#define HERMON_MOD_STAT_CFG_PTR         0x0
#define HERMON_MOD_STAT_CFG_INLINE      0x1
#define HERMON_MOD_STAT_CFG_DEFAULTS    0xF


/*
 * The hermon_mbox_t structure is used internally by the Hermon driver to track
 * all the information necessary to manage mailboxes for the Hermon command
 * interface.  Specifically, by containing a pointer to the buffer, the
 * PCI mapped address, the access handle, and a back pointer to the
 * hermon_rsrc_t structure used to track this resource, it provides enough
 * information allocate, use, and free any type of mailbox.
 *
 * The mb_indx, mb_next, and mb_prev fields are used only by the mailbox
 * alloc/free routines (see hermon_impl_mbox_alloc/free() for more details)
 * and are not read or modified by any mailbox consumers.  They are used
 * to implement a fast allocation mechanism.
 */
typedef struct hermon_mbox_s {
        void                    *mb_addr;
        uint64_t                mb_mapaddr;
        ddi_acc_handle_t        mb_acchdl;
        hermon_rsrc_t           *mb_rsrcptr;
        uint_t                  mb_indx;
        uint_t                  mb_next;
        uint_t                  mb_prev;
} hermon_mbox_t;

/*
 * The hermon_mboxlist_t structure is used to track all the information
 * relevant to the pools of Hermon mailboxes.  Specifically, it has a pointer
 * to an array of hermon_mbox_t structures, a lock and cv used for blocking
 * on alloc when mailboxes are not available, and a head, tail, and entries
 * free counter to keep track of which (if any) mailboxes are currently free.
 * This is used (along with the mb_indx, mb_next, and mb_prev fields in the
 * hermon_mbox_t) to implement the fast allocation mechanism.
 */
typedef struct hermon_mboxlist_s {
        kmutex_t                mbl_lock;
        kcondvar_t              mbl_cv;
        hermon_mbox_t           *mbl_mbox;
        uint_t                  mbl_list_sz;
        uint_t                  mbl_num_alloc;
        uint_t                  mbl_head_indx;
        uint_t                  mbl_tail_indx;
        uint_t                  mbl_entries_free;
        uint_t                  mbl_waiters;
        uint_t                  mbl_pollers;
        uint_t                  mbl_signal;
} hermon_mboxlist_t;
_NOTE(MUTEX_PROTECTS_DATA(hermon_mboxlist_t::mbl_lock,
    hermon_mboxlist_t::mbl_mbox
    hermon_mboxlist_t::mbl_list_sz
    hermon_mboxlist_t::mbl_num_alloc
    hermon_mboxlist_t::mbl_cv
    hermon_mboxlist_t::mbl_head_indx
    hermon_mboxlist_t::mbl_tail_indx
    hermon_mboxlist_t::mbl_entries_free
    hermon_mboxlist_t::mbl_waiters
    hermon_mboxlist_t::mbl_pollers
    hermon_mboxlist_t::mbl_signal
    hermon_mbox_t::mb_next
    hermon_mbox_t::mb_prev))

/*
 * The hermon_mbox_info_t structure is used by mailbox allocators to specify
 * the type of mailbox(es) being requested.  On a call to hermon_mbox_alloc()
 * the mbi_alloc_flags may be set to HERMON_ALLOC_INMBOX, HERMON_ALLOC_OUTMBOX,
 * or both.  If it is able to allocate the request type(s) of mailboxes,
 * hermon_mbox_alloc() will fill in the "mbi_in" and/or "mbi_out" pointers
 * to point to valid hermon_mbox_t structures from the appropriate
 * hermon_mboxlist_t (see above).
 * This same structure is also passed to hermon_mbox_free().  It is the
 * responsibility of the caller to hermon_mbox_alloc() to return this exact
 * structure (unmodified) to hermon_mbox_free().
 *
 * Note: If both "In" and "Out" mailboxes are requested, it is assured that
 * no deadlock can result (from holding one mailbox while attempting to get
 * the other).  This is assured by the fact that the "In" mailbox will always
 * be allocated first before attempting to allocate the "Out"
 */
typedef struct hermon_mbox_info_s {
        uint_t                  mbi_alloc_flags;
        uint_t                  mbi_sleep_context;
        hermon_mbox_t           *mbi_in;
        hermon_mbox_t           *mbi_out;
} hermon_mbox_info_t;
#define HERMON_ALLOC_INMBOX     (1 << 0)
#define HERMON_ALLOC_OUTMBOX    (1 << 1)


/*
 * The hermon_cmd_t structure is used internally by the Hermon driver to track
 * all the information necessary to manage outstanding firmware commands on
 * the Hermon command interface.
 *
 * Each hermon_cmd_t structure contains a cv and lock which are used by the
 * posting thread to block for completion (with cmd_status being overloaded
 * to indicate the condition variable).  The cmd_outparam field is used to
 * return additional status from those Hermon commands that specifically
 * require it.
 *
 * The cmd_indx, cmd_next, and cmd_prev fields are used by the outstanding
 * command alloc/free routines (see hermon_outstanding_cmd_alloc/free() for
 * more details).  They are used (in much the same way as the mb_indx,
 * mb_next, and mb_prev fields in hermon_mbox_t above) to implement a fast
 * allocation mechanism.
 */
typedef struct hermon_cmd_s {
        kmutex_t                cmd_comp_lock;
        kcondvar_t              cmd_comp_cv;
        uint64_t                cmd_outparm;
        uint_t                  cmd_status;
        uint_t                  cmd_indx;
        uint_t                  cmd_next;
        uint_t                  cmd_prev;
} hermon_cmd_t;
_NOTE(MUTEX_PROTECTS_DATA(hermon_cmd_t::cmd_comp_lock,
    hermon_cmd_t::cmd_comp_cv
    hermon_cmd_t::cmd_status))

/*
 * The hermon_cmdlist_t structure is used in almost exactly the same way as
 * the hermon_mboxlist_t above, but instead to track all the information
 * relevant to the pool of outstanding Hermon commands.  Specifically, it has
 * a pointer to an array of hermon_cmd_t structures, a lock and cv used for
 * blocking on alloc when outstanding command slots are not available, and a
 * head, tail, and entries free counter to keep track of which (if any)
 * command slots are currently free.  This is used (along with the cmd_indx,
 * cmd_next, and cmd_prev fields in the hermon_cmd_t) to implement the fast
 * allocation mechanism.
 */
typedef struct hermon_cmdlist_s {
        kmutex_t                cml_lock;
        kcondvar_t              cml_cv;
        hermon_cmd_t            *cml_cmd;
        uint_t                  cml_list_sz;
        uint_t                  cml_num_alloc;
        uint_t                  cml_head_indx;
        uint_t                  cml_tail_indx;
        uint_t                  cml_entries_free;
        uint_t                  cml_waiters;
} hermon_cmdlist_t;
_NOTE(MUTEX_PROTECTS_DATA(hermon_cmdlist_t::cml_lock,
    hermon_cmdlist_t::cml_cv
    hermon_cmdlist_t::cml_cmd
    hermon_cmdlist_t::cml_list_sz
    hermon_cmdlist_t::cml_num_alloc
    hermon_cmdlist_t::cml_head_indx
    hermon_cmdlist_t::cml_tail_indx
    hermon_cmdlist_t::cml_entries_free
    hermon_cmdlist_t::cml_waiters
    hermon_cmd_t::cmd_next
    hermon_cmd_t::cmd_prev))
_NOTE(LOCK_ORDER(hermon_cmdlist_t::cml_lock
    hermon_cmd_t::cmd_comp_lock))

/*
 * The hermon_cmd_post_t structure is used by all the Hermon Firmware Command
 * routines to post to Hermon firmware.  The fields almost exactly mimic
 * the fields in the Hermon HCR registers.  The notable exception is the
 * addition of the "cp_flags" field (which can be set to HERMON_CMD_SPIN or
 * HERMON_CMD_NOSPIN).  This flag really controls the value of the "e" bit
 * in the HCR (i.e. the bit to indicate whether command should complete
 * "in place" - in the HCR - or whether they should have their completions
 * written to the command completion event queue.  HERMON_CMD_SPIN means
 * to allow commands to complete "in place" and to poll the "go" bit in
 * the HCR to determine completion.
 *
 * We use HERMON_SLEEP and HERMON_NOSLEEP for our HERMON_CMD_ #defines.  This is
 * to maintain consistency with the rest of the SLEEP flags.  Additionally,
 * because HERMON_SLEEPFLAG_FOR_CONTEXT() in hermon_rsrc.h returns HERMON_SLEEP
 * or NOSLEEP we must be compatible with this macro.
 */
typedef struct hermon_cmd_post_s {
        uint64_t                cp_inparm;
        uint64_t                cp_outparm;
        uint32_t                cp_inmod;
        uint16_t                cp_opcode;
        uint16_t                cp_opmod;
        uint32_t                cp_flags;
} hermon_cmd_post_t;
#define HERMON_CMD_SLEEP_NOSPIN         HERMON_SLEEP
#define HERMON_CMD_NOSLEEP_SPIN         HERMON_NOSLEEP


/*
 * The following are the Hermon Firmware Command routines that accessible
 * externally (i.e. throughout the rest of the Hermon driver software).
 * These include the all the alloc/free routines, some initialization
 * and cleanup routines, and the various specific Hermon firmware commands.
 */
int hermon_cmd_post(hermon_state_t *state, hermon_cmd_post_t *cmdpost);
int hermon_mbox_alloc(hermon_state_t *state, hermon_mbox_info_t *mbox_info,
    uint_t mbox_wait);
void hermon_mbox_free(hermon_state_t *state, hermon_mbox_info_t *mbox_info);
int hermon_cmd_complete_handler(hermon_state_t *state, hermon_eqhdl_t eq,
    hermon_hw_eqe_t *eqe);
int hermon_inmbox_list_init(hermon_state_t *state);
int hermon_intr_inmbox_list_init(hermon_state_t *state);
int hermon_outmbox_list_init(hermon_state_t *state);
int hermon_intr_outmbox_list_init(hermon_state_t *state);
void hermon_inmbox_list_fini(hermon_state_t *state);
void hermon_intr_inmbox_list_fini(hermon_state_t *state);
void hermon_outmbox_list_fini(hermon_state_t *state);
void hermon_intr_outmbox_list_fini(hermon_state_t *state);
int hermon_outstanding_cmdlist_init(hermon_state_t *state);
void hermon_outstanding_cmdlist_fini(hermon_state_t *state);

/* Added for MemFree */
int hermon_map_cmd_post(hermon_state_t *state, hermon_dma_info_t *dinfo,
    uint16_t opcode, ddi_dma_cookie_t cookie, uint_t ccount);
int hermon_map_fa_cmd_post(hermon_state_t *state);
int hermon_run_fw_cmd_post(hermon_state_t *state);
int hermon_set_icm_size_cmd_post(hermon_state_t *state);
int hermon_map_icm_aux_cmd_post(hermon_state_t *state);
int hermon_map_icm_cmd_post(hermon_state_t *state);
int hermon_disable_lam_cmd_post(hermon_state_t *state);
int hermon_unmap_icm_cmd_post(hermon_state_t *state,
    hermon_dma_info_t *dma_info);
int hermon_unmap_icm_aux_cmd_post(hermon_state_t *state);
int hermon_unmap_fa_cmd_post(hermon_state_t *state);

/*
 * INIT_HCA and CLOSE_HCA - used for initialization and teardown of Hermon
 * device configuration
 */
int hermon_init_hca_cmd_post(hermon_state_t *state,
    hermon_hw_initqueryhca_t *inithca, uint_t sleepflag);
int hermon_close_hca_cmd_post(hermon_state_t *state, uint_t sleepflag);

/*
 * INIT_PORT, CLOSE_PORT, and SET_PORT - used for bring Hermon ports up and
 * down, and to set properties of each port (e.g. PortInfo capability mask)
 * NOTE:  New names for the commands in Hermon (previously init_ close_ and
 * set_ib
 */
int hermon_set_port_cmd_post(hermon_state_t *state,
    hermon_hw_set_port_t *initport, uint_t port, uint_t sleepflag);
int hermon_init_port_cmd_post(hermon_state_t *state, uint_t port,
    uint_t sleepflag);
int hermon_close_port_cmd_post(hermon_state_t *state, uint_t port,
    uint_t sleepflag);

/*
 * This common function is used to post the following Hermon QP state
 * transition firmware commands:
 * RTS2SQD, TOERR, TORST, RST2INIT, INIT2INIT, INIT2RTR, RTR2RTS, RTS2RTS,
 * SQD2SQD, SQD2RTS, and SQERR2RTS.
 */
int hermon_cmn_qp_cmd_post(hermon_state_t *state, uint_t opcode,
    hermon_hw_qpc_t *qp, uint_t qpindx, uint32_t opmask, uint_t sleepflag);

/*
 * This common function is used to post the following Hermon query firmware
 * commands:
 * QUERY_DEV_LIM/CAP, QUERY_FW, QUERY_ADAPTER, QUERY_HCA, QUERY_MPT,
 * QUERY_EQ, QUERY_CQ, and QUERY_QP.
 * New with FCoIB, QUERY_FC
 */
int hermon_cmn_query_cmd_post(hermon_state_t *state, uint_t opcode,
    uint_t opmod, uint_t queryindx, void *query, uint_t size, uint_t sleepflag);

/*
 * This common function is used to post the following Hermon resource ownership
 * firmware commands:
 * HW2SW_MPT, HW2SW_EQ, HW2SW_CQ, SW2HW_MPT, SW2HW_EQ, and SW2HW_CQ
 */
int hermon_cmn_ownership_cmd_post(hermon_state_t *state, uint_t opcode,
    void *hwrsrc, uint_t size, uint_t hwrsrcindx, uint_t sleepflag);

/*
 * MAD_IFC and helper functions - used for posting IB MADs to Hermon firmware.
 * The helper functions are for the MADs most frequently used by the Hermon
 * driver (internally).
 */
int hermon_mad_ifc_cmd_post(hermon_state_t *state, uint_t port,
    uint_t sleepflag, uint32_t *mad, uint32_t *resp);
int hermon_getportinfo_cmd_post(hermon_state_t *state, uint_t port,
    uint_t sleepflag, sm_portinfo_t *portinfo);
int hermon_getnodeinfo_cmd_post(hermon_state_t *state, uint_t sleepflag,
    sm_nodeinfo_t *nodeinfo);
int hermon_getnodedesc_cmd_post(hermon_state_t *state, uint_t sleepflag,
    sm_nodedesc_t *nodedesc);
int hermon_getguidinfo_cmd_post(hermon_state_t *state, uint_t port,
    uint_t guidblock, uint_t sleepflag, sm_guidinfo_t *guidinfo);
int hermon_getpkeytable_cmd_post(hermon_state_t *state, uint_t port,
    uint_t pkeyblock, uint_t sleepflag, sm_pkey_table_t *pkeytable);
int hermon_is_ext_port_counters_supported(hermon_state_t *state, uint_t port,
    uint_t sleepflag, int *ext_width_supported);
int hermon_getextperfcntr_cmd_post(hermon_state_t *state, uint_t port,
    uint_t sleepflag, hermon_hw_sm_extperfcntr_t *perfinfo);
int hermon_getperfcntr_cmd_post(hermon_state_t *state, uint_t port,
    uint_t sleepflag, hermon_hw_sm_perfcntr_t *perfinfo, int reset);
/*
 * WRITE_MTT - used for write MTT entries to the Hermon MTT table
 */
int hermon_write_mtt_cmd_post(hermon_state_t *state, hermon_rsrc_t *mtt,
    uint64_t start_addr, uint_t nummtt, uint_t sleepflag);

/*
 * SYNC_TPT - used to sync Hermon TPT caches
 */
int hermon_sync_tpt_cmd_post(hermon_state_t *state, uint_t sleepflag);

/*
 * MAP_EQ - used for map classes of events to Hermon event queues (EQ)
 */
int hermon_map_eq_cmd_post(hermon_state_t *state, uint_t map,
    uint_t eqcindx, uint64_t eqmapmask, uint_t sleepflag);

/*
 * RESIZE_CQ - used for resize completion queue (CQ)
 *      opmod 0 is resize cq.  opmod 1 is modify interrupt moderation.
 */
int hermon_resize_cq_cmd_post(hermon_state_t *state, hermon_hw_cqc_t *cqc,
    uint_t cqcindx, uint32_t *prod_indx, uint_t sleepflag);
int hermon_modify_cq_cmd_post(hermon_state_t *state, hermon_hw_cqc_t *cqc,
    uint_t cqcindx, uint_t opmod, uint_t sleepflag);

/*
 * CONF_SPECIAL_QP - used to configure a pair of queue pairs for use as
 * special QP.  Necessary to enable full QP0 and/or QP1 operation.
 */
int hermon_conf_special_qp_cmd_post(hermon_state_t *state, uint_t qpindx,
    uint_t qptype, uint_t sleepflag, uint_t opmod);

/*
 * Get FEXCH HEART BEAT
 */
int hermon_get_heart_beat_rq_cmd_post(hermon_state_t *state, uint_t qpindx,
    uint64_t *outparm);

/*
 * MGID_HASH, READ_MGM, and WRITE_MGM - used for manipulation of the
 * hardware resource tables for multicast groups.
 *      NOTE: for intial implementation these functions retain their original
 *              names, though the proper hermon terminology is READ_MCG and
 *              WRITE_MCG - MGID_HASH retains its original name
 */
int hermon_mgid_hash_cmd_post(hermon_state_t *state, uint64_t mgid_h,
    uint64_t mgid_l, uint64_t *mgid_hash, uint_t sleepflag);
int hermon_read_mgm_cmd_post(hermon_state_t *state, hermon_hw_mcg_t *mcg,
    uint_t mcgindx, uint_t sleepflag);
int hermon_write_mgm_cmd_post(hermon_state_t *state, hermon_hw_mcg_t *mcg,
    uint_t mcgindx, uint_t sleepflag);

/*
 * MOD_STAT_CFG - used to configure (override) settings set in NVRAM before
 * a call to QUERY_DEV_LIM.  This is primarily used for SRQ settings in
 * the firmware.
 */
int hermon_mod_stat_cfg_cmd_post(hermon_state_t *state);

/*
 * MODIFY_MPT - used to change MPT attributes of a memory region.  This
 * was (Tavor/Arbel) primarily used for Resizing SRQs -- now may be used
 * to modify MPT paramters
 */
int hermon_modify_mpt_cmd_post(hermon_state_t *state, hermon_hw_dmpt_t *mpt,
    uint_t mptindx, uint_t flags, uint_t sleepflag);

/*
 * RESIZE_SRQ is new in hermon, replacing opcodes in modify_mpt.  It is used
 * to resize the SRQ, by passing the new information in the same format as
 * the original srqc, which the HCA will update appropriately
 */
int hermon_resize_srq_cmd_post(hermon_state_t *state, hermon_hw_srqc_t *srq,
    uint_t srqnum, uint_t sleepflag);

/*
 * CMD_NOP - used to test the interrupt/Event Queue mechanism.
 */
int hermon_nop_post(hermon_state_t *state, uint_t interval, uint_t sleep);
int hermon_setdebug_post(hermon_state_t *state);

/*
 * READ_MTT - used to read an mtt entry at address.
 */
int hermon_read_mtt_cmd_post(hermon_state_t *state, uint64_t mtt_addr,
    hermon_hw_mtt_t *mtt);

/*
 * SENSE_PORT - used to send protocol running on a port
 */
int hermon_sense_port_post(hermon_state_t *state, uint_t portnum,
    uint32_t *protocol);

/*
 * CONFIG_FC - used to do either a basic config passing in
 *      *hermon_hw_config_fc_basic_s, or config the N_Port table.
 *      passing in pointer to an array of 32-bit id's
 *      Note that either one needs to be cast to void *
 */
int hermon_config_fc_cmd_post(hermon_state_t *state, void *cfginfo, int enable,
    int selector, int n_ports, int portnum, uint_t sleepflag);

/*
 * CONFIG_INT_MOD - used to configure INTERRUPT moderation
 */
int hermon_config_int_mod(hermon_state_t *state, uint_t min_delay,
    uint_t vector);

/*
 * HW_HEALTH_CHECK - tests state of the HCA
 *      if command fails, *health is invalid/undefined
 */
int hermon_hw_health_check(hermon_state_t *state, int *health);

#ifdef __cplusplus
}
#endif

#endif  /* _SYS_IB_ADAPTERS_HERMON_CMD_H */