FreeBSD/Linux Kernel Cross Reference
sys/dev/mpt/mpt.h

     /* $FreeBSD$ */
     /*-
      * Generic defines for LSI '909 FC  adapters.
      * FreeBSD Version.
      *
      * Copyright (c)  2000, 2001 by Greg Ansley
      *
      * Redistribution and use in source and binary forms, with or without
      * modification, are permitted provided that the following conditions
     * are met:
     * 1. Redistributions of source code must retain the above copyright
     *    notice immediately at the beginning of the file, without modification,
     *    this list of conditions, and the following disclaimer.
     * 2. The name of the author may not be used to endorse or promote products
     *    derived from this software without specific prior written permission.
     *
     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
     * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     * SUCH DAMAGE.
     */
    /*-
     * Copyright (c) 2002, 2006 by Matthew Jacob
     * All rights reserved.
     * 
     * Redistribution and use in source and binary forms, with or without
     * modification, are permitted provided that the following conditions are
     * met:
     * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce at minimum a disclaimer
     *    substantially similar to the "NO WARRANTY" disclaimer below
     *    ("Disclaimer") and any redistribution must be conditioned upon including
     *    a substantially similar Disclaimer requirement for further binary
     *    redistribution.
     * 3. Neither the names of the above listed copyright holders nor the names
     *    of any contributors may be used to endorse or promote products derived
     *    from this software without specific prior written permission.
     * 
     * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
     * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
     * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF THE COPYRIGHT
     * OWNER OR CONTRIBUTOR IS ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     *
     * Support from Chris Ellsworth in order to make SAS adapters work
     * is gratefully acknowledged.
     *
     *
     * Support from LSI-Logic has also gone a great deal toward making this a
     * workable subsystem and is gratefully acknowledged.
     */
    /*
     * Copyright (c) 2004, Avid Technology, Inc. and its contributors.
     * Copyright (c) 2004, 2005 Justin T. Gibbs
     * Copyright (c) 2005, WHEEL Sp. z o.o.
     * All rights reserved.
     * 
     * Redistribution and use in source and binary forms, with or without
     * modification, are permitted provided that the following conditions are
     * met:
     * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce at minimum a disclaimer
     *    substantially similar to the "NO WARRANTY" disclaimer below
     *    ("Disclaimer") and any redistribution must be conditioned upon including
     *    a substantially similar Disclaimer requirement for further binary
     *    redistribution.
     * 3. Neither the names of the above listed copyright holders nor the names
     *    of any contributors may be used to endorse or promote products derived
     *    from this software without specific prior written permission.
     * 
     * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
     * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
     * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF THE COPYRIGHT
     * OWNER OR CONTRIBUTOR IS ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     */
    
    #ifndef _MPT_H_
   #define _MPT_H_
   
   /********************************* OS Includes ********************************/
   #include <sys/types.h>
   #include <sys/param.h>
   #include <sys/systm.h>
   #include <sys/endian.h>
   #include <sys/eventhandler.h>
   #if __FreeBSD_version < 500000  
   #include <sys/kernel.h>
   #include <sys/queue.h>
   #include <sys/malloc.h>
   #else
   #include <sys/lock.h>
   #include <sys/kernel.h>
   #include <sys/queue.h>
   #include <sys/malloc.h>
   #include <sys/mutex.h>
   #include <sys/condvar.h>
   #endif
   #include <sys/proc.h>
   #include <sys/bus.h>
   #include <sys/module.h>
   
   #include <machine/cpu.h>
   #include <machine/resource.h>
   
   #if __FreeBSD_version < 500000  
   #include <machine/bus.h>
   #include <machine/clock.h>
   #endif
   
   #include <sys/rman.h>
   
   #if __FreeBSD_version < 500000  
   #include <pci/pcireg.h>
   #include <pci/pcivar.h>
   #else
   #include <dev/pci/pcireg.h>
   #include <dev/pci/pcivar.h>
   #endif
   
   #include <machine/bus.h>
   #include "opt_ddb.h"
   
   /**************************** Register Definitions ****************************/
   #include <dev/mpt/mpt_reg.h>
   
   /******************************* MPI Definitions ******************************/
   #include <dev/mpt/mpilib/mpi_type.h>
   #include <dev/mpt/mpilib/mpi.h>
   #include <dev/mpt/mpilib/mpi_cnfg.h>
   #include <dev/mpt/mpilib/mpi_ioc.h>
   #include <dev/mpt/mpilib/mpi_raid.h>
   
   /* XXX For mpt_debug.c */
   #include <dev/mpt/mpilib/mpi_init.h>
   
   #define MPT_S64_2_SCALAR(y)     ((((int64_t)y.High) << 32) | (y.Low))
   #define MPT_U64_2_SCALAR(y)     ((((uint64_t)y.High) << 32) | (y.Low))
   
   /****************************** Misc Definitions ******************************/
   /* #define MPT_TEST_MULTIPATH   1 */
   #define MPT_OK (0)
   #define MPT_FAIL (0x10000)
   
   #define NUM_ELEMENTS(array) (sizeof(array) / sizeof(*array))
   
   #define MPT_ROLE_NONE           0
   #define MPT_ROLE_INITIATOR      1
   #define MPT_ROLE_TARGET         2
   #define MPT_ROLE_BOTH           3
   #define MPT_ROLE_DEFAULT        MPT_ROLE_INITIATOR
   
   /**************************** Forward Declarations ****************************/
   struct mpt_softc;
   struct mpt_personality;
   typedef struct req_entry request_t;
   
   /************************* Personality Module Support *************************/
   typedef int mpt_load_handler_t(struct mpt_personality *);
   typedef int mpt_probe_handler_t(struct mpt_softc *);
   typedef int mpt_attach_handler_t(struct mpt_softc *);
   typedef int mpt_enable_handler_t(struct mpt_softc *);
   typedef void mpt_ready_handler_t(struct mpt_softc *);
   typedef int mpt_event_handler_t(struct mpt_softc *, request_t *,
                                   MSG_EVENT_NOTIFY_REPLY *);
   typedef void mpt_reset_handler_t(struct mpt_softc *, int /*type*/);
   /* XXX Add return value and use for veto? */
   typedef void mpt_shutdown_handler_t(struct mpt_softc *);
   typedef void mpt_detach_handler_t(struct mpt_softc *);
   typedef int mpt_unload_handler_t(struct mpt_personality *);
   
   struct mpt_personality
   {
           const char              *name;
           uint32_t                 id;            /* Assigned identifier. */
           u_int                    use_count;     /* Instances using personality*/
           mpt_load_handler_t      *load;          /* configure personailty */
   #define MPT_PERS_FIRST_HANDLER(pers) (&(pers)->load)
           mpt_probe_handler_t     *probe;         /* configure personailty */
           mpt_attach_handler_t    *attach;        /* initialize device instance */
           mpt_enable_handler_t    *enable;        /* enable device */
           mpt_ready_handler_t     *ready;         /* final open for business */
           mpt_event_handler_t     *event;         /* Handle MPI event. */
           mpt_reset_handler_t     *reset;         /* Re-init after reset. */
           mpt_shutdown_handler_t  *shutdown;      /* Shutdown instance. */
           mpt_detach_handler_t    *detach;        /* release device instance */
           mpt_unload_handler_t    *unload;        /* Shutdown personality */
   #define MPT_PERS_LAST_HANDLER(pers) (&(pers)->unload)
   };
   
   int mpt_modevent(module_t, int, void *);
   
   /* Maximum supported number of personalities. */
   #define MPT_MAX_PERSONALITIES   (15)
   
   #define MPT_PERSONALITY_DEPEND(name, dep, vmin, vpref, vmax) \
           MODULE_DEPEND(name, dep, vmin, vpref, vmax)
   
   #define DECLARE_MPT_PERSONALITY(name, order)                              \
           static moduledata_t name##_mod = {                                \
                   #name, mpt_modevent, &name##_personality                  \
           };                                                                \
           DECLARE_MODULE(name, name##_mod, SI_SUB_DRIVERS, order);          \
           MODULE_VERSION(name, 1);                                          \
           MPT_PERSONALITY_DEPEND(name, mpt_core, 1, 1, 1)
   
   /******************************* Bus DMA Support ******************************/
   /* XXX Need to update bus_dmamap_sync to take a range argument. */
   #define bus_dmamap_sync_range(dma_tag, dmamap, offset, len, op) \
           bus_dmamap_sync(dma_tag, dmamap, op)
   
   #if __FreeBSD_version < 600000
   #define bus_get_dma_tag(x)      NULL
   #endif
   #if __FreeBSD_version >= 501102
   #define mpt_dma_tag_create(mpt, parent_tag, alignment, boundary,        \
                              lowaddr, highaddr, filter, filterarg,        \
                              maxsize, nsegments, maxsegsz, flags,         \
                              dma_tagp)                                    \
           bus_dma_tag_create(parent_tag, alignment, boundary,             \
                              lowaddr, highaddr, filter, filterarg,        \
                              maxsize, nsegments, maxsegsz, flags,         \
                              busdma_lock_mutex, &Giant,                   \
                              dma_tagp)
   #else
   #define mpt_dma_tag_create(mpt, parent_tag, alignment, boundary,        \
                              lowaddr, highaddr, filter, filterarg,        \
                              maxsize, nsegments, maxsegsz, flags,         \
                              dma_tagp)                                    \
           bus_dma_tag_create(parent_tag, alignment, boundary,             \
                              lowaddr, highaddr, filter, filterarg,        \
                              maxsize, nsegments, maxsegsz, flags,         \
                              dma_tagp)
   #endif
   
   struct mpt_map_info {
           struct mpt_softc *mpt;
           int               error;
           uint32_t          phys;
   };
   
   void mpt_map_rquest(void *, bus_dma_segment_t *, int, int);
   /* **************************** NewBUS interrupt Crock ************************/
   #if __FreeBSD_version < 700031
   #define mpt_setup_intr(d, i, f, U, if, ifa, hp) \
           bus_setup_intr(d, i, f, if, ifa, hp)
   #else
   #define mpt_setup_intr  bus_setup_intr
   #endif
   
   /**************************** Kernel Thread Support ***************************/
   #if __FreeBSD_version > 500005
   #define mpt_kthread_create(func, farg, proc_ptr, flags, stackpgs, fmtstr, arg) \
           kthread_create(func, farg, proc_ptr, flags, stackpgs, fmtstr, arg)
   #else
   #define mpt_kthread_create(func, farg, proc_ptr, flags, stackpgs, fmtstr, arg) \
           kthread_create(func, farg, proc_ptr, fmtstr, arg)
   #endif
   
   /****************************** Timer Facilities ******************************/
   #if __FreeBSD_version > 500000
   #define mpt_callout_init(c)     callout_init(c, /*mpsafe*/0);
   #else
   #define mpt_callout_init(c)     callout_init(c);
   #endif
   
   /********************************** Endianess *********************************/
   #define MPT_2_HOST64(ptr, tag)  ptr->tag = le64toh(ptr->tag)
   #define MPT_2_HOST32(ptr, tag)  ptr->tag = le32toh(ptr->tag)
   #define MPT_2_HOST16(ptr, tag)  ptr->tag = le16toh(ptr->tag)
   
   #define HOST_2_MPT64(ptr, tag)  ptr->tag = htole64(ptr->tag)
   #define HOST_2_MPT32(ptr, tag)  ptr->tag = htole32(ptr->tag)
   #define HOST_2_MPT16(ptr, tag)  ptr->tag = htole16(ptr->tag)
   
   #if     _BYTE_ORDER == _BIG_ENDIAN
   void mpt2host_sge_simple_union(SGE_SIMPLE_UNION *);
   void mpt2host_iocfacts_reply(MSG_IOC_FACTS_REPLY *);
   void mpt2host_portfacts_reply(MSG_PORT_FACTS_REPLY *);
   void mpt2host_config_page_ioc2(CONFIG_PAGE_IOC_2 *);
   void mpt2host_config_page_raid_vol_0(CONFIG_PAGE_RAID_VOL_0 *);
   void mpt2host_mpi_raid_vol_indicator(MPI_RAID_VOL_INDICATOR *);
   #else
   #define mpt2host_sge_simple_union(x)            do { ; } while (0)
   #define mpt2host_iocfacts_reply(x)              do { ; } while (0)
   #define mpt2host_portfacts_reply(x)             do { ; } while (0)
   #define mpt2host_config_page_ioc2(x)            do { ; } while (0)
   #define mpt2host_config_page_raid_vol_0(x)      do { ; } while (0)
   #define mpt2host_mpi_raid_vol_indicator(x)      do { ; } while (0)
   #endif
   
   /**************************** MPI Transaction State ***************************/
   typedef enum {
           REQ_STATE_NIL           = 0x00,
           REQ_STATE_FREE          = 0x01,
           REQ_STATE_ALLOCATED     = 0x02,
           REQ_STATE_QUEUED        = 0x04,
           REQ_STATE_DONE          = 0x08,
           REQ_STATE_TIMEDOUT      = 0x10,
           REQ_STATE_NEED_WAKEUP   = 0x20,
           REQ_STATE_LOCKED        = 0x80, /* can't be freed */
           REQ_STATE_MASK          = 0xFF
   } mpt_req_state_t; 
   
   struct req_entry {
           TAILQ_ENTRY(req_entry) links;   /* Pointer to next in list */
           mpt_req_state_t state;          /* Request State Information */
           uint16_t        index;          /* Index of this entry */
           uint16_t        IOCStatus;      /* Completion status */
           uint16_t        ResponseCode;   /* TMF Reponse Code */
           uint16_t        serno;          /* serial number */
           union ccb      *ccb;            /* CAM request */
           void           *req_vbuf;       /* Virtual Address of Entry */
           void           *sense_vbuf;     /* Virtual Address of sense data */
           bus_addr_t      req_pbuf;       /* Physical Address of Entry */
           bus_addr_t      sense_pbuf;     /* Physical Address of sense data */
           bus_dmamap_t    dmap;           /* DMA map for data buffers */
           struct req_entry *chain;        /* for SGE overallocations */
   };
   
   /**************************** MPI Target State Info ***************************/
   
   typedef struct {
           uint32_t reply_desc;    /* current reply descriptor */
           uint32_t resid;         /* current data residual */
           uint32_t bytes_xfered;  /* current relative offset */
           union ccb *ccb;         /* pointer to currently active ccb */
           request_t *req;         /* pointer to currently active assist request */
           uint32_t
                   is_local : 1,
                   nxfers   : 31;
           uint32_t tag_id;
           enum {
                   TGT_STATE_NIL,
                   TGT_STATE_LOADING,
                   TGT_STATE_LOADED,
                   TGT_STATE_IN_CAM,
                   TGT_STATE_SETTING_UP_FOR_DATA,
                   TGT_STATE_MOVING_DATA,
                   TGT_STATE_MOVING_DATA_AND_STATUS,
                   TGT_STATE_SENDING_STATUS
           } state;
   } mpt_tgt_state_t;
   
   /*
    * When we get an incoming command it has its own tag which is called the
    * IoIndex. This is the value we gave that particular command buffer when
    * we originally assigned it. It's just a number, really. The FC card uses
    * it as an RX_ID. We can use it to index into mpt->tgt_cmd_ptrs, which
    * contains pointers the request_t structures related to that IoIndex.
    *
    * What *we* do is construct a tag out of the index for the target command
    * which owns the incoming ATIO plus a rolling sequence number.
    */
   #define MPT_MAKE_TAGID(mpt, req, ioindex)       \
    ((ioindex << 18) | (((mpt->sequence++) & 0x3f) << 12) | (req->index & 0xfff))
   
   #ifdef  INVARIANTS
   #define MPT_TAG_2_REQ(a, b)             mpt_tag_2_req(a, (uint32_t) b)
   #else
   #define MPT_TAG_2_REQ(mpt, tag)         mpt->tgt_cmd_ptrs[tag >> 18]
   #endif
   
   #define MPT_TGT_STATE(mpt, req) ((mpt_tgt_state_t *) \
       (&((uint8_t *)req->req_vbuf)[MPT_RQSL(mpt) - sizeof (mpt_tgt_state_t)]))
   
   STAILQ_HEAD(mpt_hdr_stailq, ccb_hdr);
   #define MPT_MAX_LUNS    256
   typedef struct {
           struct mpt_hdr_stailq   atios;
           struct mpt_hdr_stailq   inots;
           int enabled;
   } tgt_resource_t;
   #define MPT_MAX_ELS     64
   
   /**************************** Handler Registration ****************************/
   /*
    * Global table of registered reply handlers.  The
    * handler is indicated by byte 3 of the request
    * index submitted to the IOC.  This allows the
    * driver core to perform generic processing without
    * any knowledge of per-personality behavior.
    *
    * MPT_NUM_REPLY_HANDLERS must be a power of 2
    * to allow the easy generation of a mask.
    *
    * The handler offsets used by the core are hard coded
    * allowing faster code generation when assigning a handler
    * to a request.  All "personalities" must use the
    * the handler registration mechanism.
    *
    * The IOC handlers that are rarely executed are placed
    * at the tail of the table to make it more likely that
    * all commonly executed handlers fit in a single cache
    * line.
    */
   #define MPT_NUM_REPLY_HANDLERS          (32)
   #define MPT_REPLY_HANDLER_EVENTS        MPT_CBI_TO_HID(0)
   #define MPT_REPLY_HANDLER_CONFIG        MPT_CBI_TO_HID(MPT_NUM_REPLY_HANDLERS-1)
   #define MPT_REPLY_HANDLER_HANDSHAKE     MPT_CBI_TO_HID(MPT_NUM_REPLY_HANDLERS-2)
   typedef int mpt_reply_handler_t(struct mpt_softc *mpt, request_t *request,
       uint32_t reply_desc, MSG_DEFAULT_REPLY *reply_frame);
   typedef union {
           mpt_reply_handler_t     *reply_handler;
   } mpt_handler_t;
   
   typedef enum {
           MPT_HANDLER_REPLY,
           MPT_HANDLER_EVENT,
           MPT_HANDLER_RESET,
           MPT_HANDLER_SHUTDOWN
   } mpt_handler_type;
   
   struct mpt_handler_record
   {
           LIST_ENTRY(mpt_handler_record)  links;
           mpt_handler_t                   handler;
   };
   
   LIST_HEAD(mpt_handler_list, mpt_handler_record);
   
   /*
    * The handler_id is currently unused but would contain the
    * handler ID used in the MsgContext field to allow direction
    * of replies to the handler.  Registrations that don't require
    * a handler id can pass in NULL for the handler_id.
    *
    * Deregistrations for handlers without a handler id should
    * pass in MPT_HANDLER_ID_NONE.
    */
   #define MPT_HANDLER_ID_NONE             (0xFFFFFFFF)
   int mpt_register_handler(struct mpt_softc *, mpt_handler_type,
                            mpt_handler_t, uint32_t *);
   int mpt_deregister_handler(struct mpt_softc *, mpt_handler_type,
                              mpt_handler_t, uint32_t);
   
   /******************* Per-Controller Instance Data Structures ******************/
   TAILQ_HEAD(req_queue, req_entry);
   
   /* Structure for saving proper values for modifyable PCI config registers */
   struct mpt_pci_cfg {
           uint16_t Command;
           uint16_t LatencyTimer_LineSize;
           uint32_t IO_BAR;
           uint32_t Mem0_BAR[2];
           uint32_t Mem1_BAR[2];
           uint32_t ROM_BAR;
           uint8_t  IntLine;
           uint32_t PMCSR;
   };
   
   typedef enum {
           MPT_RVF_NONE            = 0x0,
           MPT_RVF_ACTIVE          = 0x1,
           MPT_RVF_ANNOUNCED       = 0x2,
           MPT_RVF_UP2DATE         = 0x4,
           MPT_RVF_REFERENCED      = 0x8,
           MPT_RVF_WCE_CHANGED     = 0x10
   } mpt_raid_volume_flags;
   
   struct mpt_raid_volume {
           CONFIG_PAGE_RAID_VOL_0         *config_page;
           MPI_RAID_VOL_INDICATOR          sync_progress;
           mpt_raid_volume_flags           flags;
           u_int                           quiesced_disks;
   };
   
   typedef enum {
           MPT_RDF_NONE            = 0x00,
           MPT_RDF_ACTIVE          = 0x01,
           MPT_RDF_ANNOUNCED       = 0x02,
           MPT_RDF_UP2DATE         = 0x04,
           MPT_RDF_REFERENCED      = 0x08,
           MPT_RDF_QUIESCING       = 0x10,
           MPT_RDF_QUIESCED        = 0x20
   } mpt_raid_disk_flags;
   
   struct mpt_raid_disk {
           CONFIG_PAGE_RAID_PHYS_DISK_0    config_page;
           struct mpt_raid_volume         *volume;
           u_int                           member_number;
           u_int                           pass_thru_active;
           mpt_raid_disk_flags             flags;
   };
   
   struct mpt_evtf_record {
           MSG_EVENT_NOTIFY_REPLY          reply;
           uint32_t                        context;
           LIST_ENTRY(mpt_evtf_record)     links;
   };
   
   LIST_HEAD(mpt_evtf_list, mpt_evtf_record);
   
   struct mpt_softc {
           device_t                dev;
   #if __FreeBSD_version < 500000  
           uint32_t                mpt_islocked;   
           int                     mpt_splsaved;
   #else
           struct mtx              mpt_lock;
           int                     mpt_locksetup;
   #endif
           uint32_t                mpt_pers_mask;
           uint32_t
                                   : 8,
                   unit            : 8,
                   ready           : 1,
                   fw_uploaded     : 1,
                   msi_enable      : 1,
                   twildcard       : 1,
                   tenabled        : 1,
                   do_cfg_role     : 1,
                   raid_enabled    : 1,
                   raid_mwce_set   : 1,
                   getreqwaiter    : 1,
                   shutdwn_raid    : 1,
                   shutdwn_recovery: 1,
                   outofbeer       : 1,
                   disabled        : 1,
                   is_spi          : 1,
                   is_sas          : 1,
                   is_fc           : 1;
   
           u_int                   cfg_role;
           u_int                   role;   /* role: none, ini, target, both */
   
           u_int                   verbose;
   #ifdef  MPT_TEST_MULTIPATH
           int                     failure_id;
   #endif
   
           /*
            * IOC Facts
            */
           MSG_IOC_FACTS_REPLY     ioc_facts;
   
           /*
            * Port Facts
            */
           MSG_PORT_FACTS_REPLY *  port_facts;
   #define mpt_ini_id      port_facts[0].PortSCSIID
   #define mpt_max_tgtcmds port_facts[0].MaxPostedCmdBuffers
   
           /*
            * Device Configuration Information
            */
           union {
                   struct mpt_spi_cfg {
                           CONFIG_PAGE_SCSI_PORT_0         _port_page0;
                           CONFIG_PAGE_SCSI_PORT_1         _port_page1;
                           CONFIG_PAGE_SCSI_PORT_2         _port_page2;
                           CONFIG_PAGE_SCSI_DEVICE_0       _dev_page0[16];
                           CONFIG_PAGE_SCSI_DEVICE_1       _dev_page1[16];
                           uint16_t                        _tag_enable;
                           uint16_t                        _disc_enable;
                   } spi;
   #define mpt_port_page0          cfg.spi._port_page0
   #define mpt_port_page1          cfg.spi._port_page1
   #define mpt_port_page2          cfg.spi._port_page2
   #define mpt_dev_page0           cfg.spi._dev_page0
   #define mpt_dev_page1           cfg.spi._dev_page1
   #define mpt_tag_enable          cfg.spi._tag_enable
   #define mpt_disc_enable         cfg.spi._disc_enable
                   struct mpi_fc_cfg {
                           CONFIG_PAGE_FC_PORT_0 _port_page0;
                           uint32_t _port_speed;
   #define mpt_fcport_page0        cfg.fc._port_page0
   #define mpt_fcport_speed        cfg.fc._port_speed
                   } fc;
           } cfg;
   #if __FreeBSD_version >= 500000  
           /*
            * Device config information stored up for sysctl to access
            */
           union {
                   struct {
                           unsigned int initiator_id;
                   } spi;
                   struct {
                           char wwnn[19];
                           char wwpn[19];
                   } fc;
           } scinfo;
   #endif
   
           /* Controller Info for RAID information */
           CONFIG_PAGE_IOC_2 *     ioc_page2;
           CONFIG_PAGE_IOC_3 *     ioc_page3;
   
           /* Raid Data */
           struct mpt_raid_volume* raid_volumes;
           struct mpt_raid_disk*   raid_disks;
           u_int                   raid_max_volumes;
           u_int                   raid_max_disks;
           u_int                   raid_page0_len;
           u_int                   raid_wakeup;
           u_int                   raid_rescan;
           u_int                   raid_resync_rate;
           u_int                   raid_mwce_setting;
           u_int                   raid_queue_depth;
           u_int                   raid_nonopt_volumes;
           struct proc            *raid_thread;
           struct callout          raid_timer;
   
           /*
            * PCI Hardware info
            */
           int                     pci_msi_count;
           struct resource *       pci_irq;        /* Interrupt map for chip */
           void *                  ih;             /* Interupt handle */
           struct mpt_pci_cfg      pci_cfg;        /* saved PCI conf registers */
   
           /*
            * DMA Mapping Stuff
            */
           struct resource *       pci_reg;        /* Register map for chip */
           int                     pci_mem_rid;    /* Resource ID */
           bus_space_tag_t         pci_st;         /* Bus tag for registers */
           bus_space_handle_t      pci_sh;         /* Bus handle for registers */
           /* PIO versions of above. */
           int                     pci_pio_rid;
           struct resource *       pci_pio_reg;
           bus_space_tag_t         pci_pio_st;
           bus_space_handle_t      pci_pio_sh;
   
           bus_dma_tag_t           parent_dmat;    /* DMA tag for parent PCI bus */
           bus_dma_tag_t           reply_dmat;     /* DMA tag for reply memory */
           bus_dmamap_t            reply_dmap;     /* DMA map for reply memory */
           uint8_t                *reply;          /* KVA of reply memory */
           bus_addr_t              reply_phys;     /* BusAddr of reply memory */
   
           bus_dma_tag_t           buffer_dmat;    /* DMA tag for buffers */
           bus_dma_tag_t           request_dmat;   /* DMA tag for request memroy */
           bus_dmamap_t            request_dmap;   /* DMA map for request memroy */
           uint8_t                *request;        /* KVA of Request memory */
           bus_addr_t              request_phys;   /* BusAddr of request memory */
   
           uint32_t                max_seg_cnt;    /* calculated after IOC facts */
   
           /*
            * Hardware management
            */
           u_int                   reset_cnt;
   
           /*
            * CAM && Software Management
            */
           request_t              *request_pool;
           struct req_queue        request_free_list;
           struct req_queue        request_pending_list;
           struct req_queue        request_timeout_list;
   
   
           struct cam_sim         *sim;
           struct cam_path        *path;
   
           struct cam_sim         *phydisk_sim;
           struct cam_path        *phydisk_path;
   
           struct proc            *recovery_thread;
           request_t              *tmf_req;
   
           /*
            * Deferred frame acks due to resource shortage.
            */
           struct mpt_evtf_list    ack_frames;
   
           /*
            * Target Mode Support
            */
           uint32_t                scsi_tgt_handler_id;
           request_t **            tgt_cmd_ptrs;
           request_t **            els_cmd_ptrs;   /* FC only */
   
           /*
            * *snork*- this is chosen to be here *just in case* somebody
            * forgets to point to it exactly and we index off of trt with
            * CAM_LUN_WILDCARD.
            */
           tgt_resource_t          trt_wildcard;           /* wildcard luns */
           tgt_resource_t          trt[MPT_MAX_LUNS];
           uint16_t                tgt_cmds_allocated;
           uint16_t                els_cmds_allocated;     /* FC only */
   
           uint16_t                timeouts;       /* timeout count */
           uint16_t                success;        /* successes afer timeout */
           uint16_t                sequence;       /* Sequence Number */
           uint16_t                pad3;
   
   
           /* Paired port in some dual adapters configurations */
           struct mpt_softc *      mpt2;
   
           /* FW Image management */
           uint32_t                fw_image_size;
           uint8_t                *fw_image;
           bus_dma_tag_t           fw_dmat;        /* DMA tag for firmware image */
           bus_dmamap_t            fw_dmap;        /* DMA map for firmware image */
           bus_addr_t              fw_phys;        /* BusAddr of firmware image */
   
           /* Shutdown Event Handler. */
           eventhandler_tag         eh;
   
           TAILQ_ENTRY(mpt_softc)  links;
   };
   
   static __inline void mpt_assign_serno(struct mpt_softc *, request_t *);
   
   static __inline void
   mpt_assign_serno(struct mpt_softc *mpt, request_t *req)
   {
           if ((req->serno = mpt->sequence++) == 0) {
                   req->serno = mpt->sequence++;
           }
   }
   
   /***************************** Locking Primitives *****************************/
   #if __FreeBSD_version < 500000  
   #define MPT_IFLAGS              INTR_TYPE_CAM
   #define MPT_LOCK(mpt)           mpt_lockspl(mpt)
   #define MPT_UNLOCK(mpt)         mpt_unlockspl(mpt)
   #define MPT_OWNED(mpt)          mpt->mpt_islocked
   #define MPTLOCK_2_CAMLOCK       MPT_UNLOCK
   #define CAMLOCK_2_MPTLOCK       MPT_LOCK
   #define MPT_LOCK_SETUP(mpt)
   #define MPT_LOCK_DESTROY(mpt)
   
   static __inline void mpt_lockspl(struct mpt_softc *mpt);
   static __inline void mpt_unlockspl(struct mpt_softc *mpt);
   
   static __inline void
   mpt_lockspl(struct mpt_softc *mpt)
   {
          int s;
   
          s = splcam();
          if (mpt->mpt_islocked++ == 0) {  
                  mpt->mpt_splsaved = s;
          } else {
                  splx(s);
                  panic("Recursed lock with mask: 0x%x\n", s);
          }
   }
   
   static __inline void
   mpt_unlockspl(struct mpt_softc *mpt)
   {
          if (mpt->mpt_islocked) {
                  if (--mpt->mpt_islocked == 0) {
                          splx(mpt->mpt_splsaved);
                  }
          } else
                  panic("Negative lock count\n");
   }
   
   static __inline int
   mpt_sleep(struct mpt_softc *mpt, void *ident, int priority,
              const char *wmesg, int timo)
   {
           int saved_cnt;
           int saved_spl;
           int error;
   
           KASSERT(mpt->mpt_islocked <= 1, ("Invalid lock count on tsleep"));
           saved_cnt = mpt->mpt_islocked;
           saved_spl = mpt->mpt_splsaved;
           mpt->mpt_islocked = 0;
           error = tsleep(ident, priority, wmesg, timo);
           KASSERT(mpt->mpt_islocked == 0, ("Invalid lock count on wakeup"));
           mpt->mpt_islocked = saved_cnt;
           mpt->mpt_splsaved = saved_spl;
           return (error);
   }
   
   #else
   #ifdef  LOCKING_WORKED_AS_IT_SHOULD
   #error "Shouldn't Be Here!"
   #define MPT_IFLAGS              INTR_TYPE_CAM | INTR_ENTROPY | INTR_MPSAFE
   #define MPT_LOCK_SETUP(mpt)                                             \
                   mtx_init(&mpt->mpt_lock, "mpt", NULL, MTX_DEF);         \
                   mpt->mpt_locksetup = 1
   #define MPT_LOCK_DESTROY(mpt)                                           \
           if (mpt->mpt_locksetup) {                                       \
                   mtx_destroy(&mpt->mpt_lock);                            \
                   mpt->mpt_locksetup = 0;                                 \
           }
   
   #define MPT_LOCK(mpt)           mtx_lock(&(mpt)->mpt_lock)
   #define MPT_UNLOCK(mpt)         mtx_unlock(&(mpt)->mpt_lock)
   #define MPT_OWNED(mpt)          mtx_owned(&(mpt)->mpt_lock)
   #define MPTLOCK_2_CAMLOCK(mpt)  \
           mtx_unlock(&(mpt)->mpt_lock); mtx_lock(&Giant)
   #define CAMLOCK_2_MPTLOCK(mpt)  \
           mtx_unlock(&Giant); mtx_lock(&(mpt)->mpt_lock)
   #define mpt_sleep(mpt, ident, priority, wmesg, timo) \
           msleep(ident, &(mpt)->mpt_lock, priority, wmesg, timo)
   
   #else
   
   #define MPT_IFLAGS              INTR_TYPE_CAM | INTR_ENTROPY
   #define MPT_LOCK_SETUP(mpt)     do { } while (0)
   #define MPT_LOCK_DESTROY(mpt)   do { } while (0)
   #if     0
   #define MPT_LOCK(mpt)           \
           device_printf(mpt->dev, "LOCK %s:%d\n", __FILE__, __LINE__);    \
           KASSERT(mpt->mpt_locksetup == 0,                                \
               ("recursive lock acquire at %s:%d", __FILE__, __LINE__));   \
           mpt->mpt_locksetup = 1
   #define MPT_UNLOCK(mpt)         \
           device_printf(mpt->dev, "UNLK %s:%d\n", __FILE__, __LINE__);    \
           KASSERT(mpt->mpt_locksetup == 1,                                \
               ("release unowned lock at %s:%d", __FILE__, __LINE__));     \
           mpt->mpt_locksetup = 0
   #else
   #define MPT_LOCK(mpt)                                                   \
           KASSERT(mpt->mpt_locksetup == 0,                                \
               ("recursive lock acquire at %s:%d", __FILE__, __LINE__));   \
           mpt->mpt_locksetup = 1
   #define MPT_UNLOCK(mpt)                                                 \
           KASSERT(mpt->mpt_locksetup == 1,                                \
               ("release unowned lock at %s:%d", __FILE__, __LINE__));     \
           mpt->mpt_locksetup = 0
   #endif
   #define MPT_OWNED(mpt)          mpt->mpt_locksetup
   #define MPTLOCK_2_CAMLOCK(mpt)  MPT_UNLOCK(mpt)
   #define CAMLOCK_2_MPTLOCK(mpt)  MPT_LOCK(mpt)
   
   static __inline int
   mpt_sleep(struct mpt_softc *, void *, int, const char *, int);
   
   static __inline int
   mpt_sleep(struct mpt_softc *mpt, void *i, int p, const char *w, int t)
   {
           int r;
           MPT_UNLOCK(mpt);
           r = tsleep(i, p, w, t);
           MPT_LOCK(mpt);
           return (r);
   }
   #endif
   #endif
   
   /******************************* Register Access ******************************/
   static __inline void mpt_write(struct mpt_softc *, size_t, uint32_t);
   static __inline uint32_t mpt_read(struct mpt_softc *, int);
   static __inline void mpt_pio_write(struct mpt_softc *, size_t, uint32_t);
   static __inline uint32_t mpt_pio_read(struct mpt_softc *, int);
   
   static __inline void
   mpt_write(struct mpt_softc *mpt, size_t offset, uint32_t val)
   {
           bus_space_write_4(mpt->pci_st, mpt->pci_sh, offset, val);
   }
   
   static __inline uint32_t
   mpt_read(struct mpt_softc *mpt, int offset)
   {
           return (bus_space_read_4(mpt->pci_st, mpt->pci_sh, offset));
   }
   
   /*
    * Some operations (e.g. diagnostic register writes while the ARM proccessor
    * is disabled), must be performed using "PCI pio" operations.  On non-PCI
    * busses, these operations likely map to normal register accesses.
    */
   static __inline void
   mpt_pio_write(struct mpt_softc *mpt, size_t offset, uint32_t val)
   {
           bus_space_write_4(mpt->pci_pio_st, mpt->pci_pio_sh, offset, val);
   }
   
   static __inline uint32_t
   mpt_pio_read(struct mpt_softc *mpt, int offset)
   {
           return (bus_space_read_4(mpt->pci_pio_st, mpt->pci_pio_sh, offset));
   }
   /*********************** Reply Frame/Request Management ***********************/
   /* Max MPT Reply we are willing to accept (must be power of 2) */
   #define MPT_REPLY_SIZE          256
   
   /*
    * Must be less than 16384 in order for target mode to work
    */
   #define MPT_MAX_REQUESTS(mpt)   512
   #define MPT_REQUEST_AREA        512
   #define MPT_SENSE_SIZE          32      /* included in MPT_REQUEST_AREA */
   #define MPT_REQ_MEM_SIZE(mpt)   (MPT_MAX_REQUESTS(mpt) * MPT_REQUEST_AREA)
   
   #define MPT_CONTEXT_CB_SHIFT    (16)
   #define MPT_CBI(handle)         (handle >> MPT_CONTEXT_CB_SHIFT)
   #define MPT_CBI_TO_HID(cbi)     ((cbi) << MPT_CONTEXT_CB_SHIFT)
   #define MPT_CONTEXT_TO_CBI(x)   \
       (((x) >> MPT_CONTEXT_CB_SHIFT) & (MPT_NUM_REPLY_HANDLERS - 1))
   #define MPT_CONTEXT_REQI_MASK   0xFFFF
   #define MPT_CONTEXT_TO_REQI(x)  ((x) & MPT_CONTEXT_REQI_MASK)
   
   /*
    * Convert a 32bit physical address returned from IOC to an
    * offset into our reply frame memory or the kvm address needed
    * to access the data.  The returned address is only the low
    * 32 bits, so mask our base physical address accordingly.
    */
   #define MPT_REPLY_BADDR(x)              \
           (x << 1)
   #define MPT_REPLY_OTOV(m, i)            \
           ((void *)(&m->reply[i]))
   
   #define MPT_DUMP_REPLY_FRAME(mpt, reply_frame)          \
   do {                                                    \
           if (mpt->verbose > MPT_PRT_DEBUG)               \
                   mpt_dump_reply_frame(mpt, reply_frame); \
   } while(0)
   
   static __inline uint32_t mpt_pop_reply_queue(struct mpt_softc *mpt);
   static __inline void mpt_free_reply(struct mpt_softc *mpt, uint32_t ptr);
   
   /*
    * Give the reply buffer back to the IOC after we have
    * finished processing it.
    */
   static __inline void
   mpt_free_reply(struct mpt_softc *mpt, uint32_t ptr)
   {
        mpt_write(mpt, MPT_OFFSET_REPLY_Q, ptr);
   }
   
   /* Get a reply from the IOC */
   static __inline uint32_t
   mpt_pop_reply_queue(struct mpt_softc *mpt)
   {
        return mpt_read(mpt, MPT_OFFSET_REPLY_Q);
   }
   
   void
   mpt_complete_request_chain(struct mpt_softc *, struct req_queue *, u_int);
   
   /************************** Scatter Gather Managment **************************/
   /* MPT_RQSL- size of request frame, in bytes */
   #define MPT_RQSL(mpt)           (mpt->ioc_facts.RequestFrameSize << 2)
   
   /* MPT_NSGL- how many SG entries can fit in a request frame size */
   #define MPT_NSGL(mpt)           (MPT_RQSL(mpt) / sizeof (SGE_IO_UNION))
   
   /* MPT_NRFM- how many request frames can fit in each request alloc we make */
   #define MPT_NRFM(mpt)           (MPT_REQUEST_AREA / MPT_RQSL(mpt))
   
   /*
    * MPT_NSGL_FIRST- # of SG elements that can fit after
    * an I/O request but still within the request frame.
    * Do this safely based upon SGE_IO_UNION.
    *
    * Note that the first element is *within* the SCSI request.
    */
   #define MPT_NSGL_FIRST(mpt)     \
       ((MPT_RQSL(mpt) - sizeof (MSG_SCSI_IO_REQUEST) + sizeof (SGE_IO_UNION)) / \
       sizeof (SGE_IO_UNION))
   
   /***************************** IOC Initialization *****************************/
   int mpt_reset(struct mpt_softc *, int /*reinit*/);
   
   /****************************** Debugging ************************************/
   typedef struct mpt_decode_entry {
           char    *name;
           u_int    value;
           u_int    mask;
   } mpt_decode_entry_t;
   
   int mpt_decode_value(mpt_decode_entry_t *table, u_int num_entries,
                        const char *name, u_int value, u_int *cur_column,
                        u_int wrap_point);
   
   void mpt_dump_data(struct mpt_softc *, const char *, void *, int);
   void mpt_dump_request(struct mpt_softc *, request_t *);
   
   enum {
           MPT_PRT_ALWAYS,
           MPT_PRT_FATAL,
           MPT_PRT_ERROR,
          MPT_PRT_WARN,
          MPT_PRT_INFO,
          MPT_PRT_NEGOTIATION,
          MPT_PRT_DEBUG,
          MPT_PRT_DEBUG1,
          MPT_PRT_DEBUG2,
          MPT_PRT_DEBUG3,
          MPT_PRT_TRACE,
          MPT_PRT_NONE=100
  };
  
  #if __FreeBSD_version > 500000
  #define mpt_lprt(mpt, level, ...)               \
  do {                                            \
          if (level <= (mpt)->verbose)            \
                  mpt_prt(mpt, __VA_ARGS__);      \
  } while (0)
  
  #define mpt_lprtc(mpt, level, ...)               \
  do {                                             \
          if (level <= (mpt)->debug_level)         \
                  mpt_prtc(mpt, __VA_ARGS__);      \
  } while (0)
  #else
  void mpt_lprt(struct mpt_softc *, int, const char *, ...)
          __printflike(3, 4);
  void mpt_lprtc(struct mpt_softc *, int, const char *, ...)
          __printflike(3, 4);
  #endif
  void mpt_prt(struct mpt_softc *, const char *, ...)
          __printflike(2, 3);
  void mpt_prtc(struct mpt_softc *, const char *, ...)
          __printflike(2, 3);
  
  /**************************** Target Mode Related ***************************/
  static __inline int mpt_cdblen(uint8_t, int);
  static __inline int
  mpt_cdblen(uint8_t cdb0, int maxlen)
  {
          int group = cdb0 >> 5;
          switch (group) {
          case 0:
                  return (6);
          case 1:
                  return (10);
          case 4:
          case 5:
                  return (12);
          default:
                  return (16);
          }
  }
  #ifdef  INVARIANTS
  static __inline request_t * mpt_tag_2_req(struct mpt_softc *, uint32_t);
  static __inline request_t *
  mpt_tag_2_req(struct mpt_softc *mpt, uint32_t tag)
  {
          uint16_t rtg = (tag >> 18);
          KASSERT(rtg < mpt->tgt_cmds_allocated, ("bad tag %d\n", tag));
          KASSERT(mpt->tgt_cmd_ptrs, ("no cmd backpointer array"));
          KASSERT(mpt->tgt_cmd_ptrs[rtg], ("no cmd backpointer"));
          return (mpt->tgt_cmd_ptrs[rtg]);
  }
  
  
  static __inline int
  mpt_req_on_free_list(struct mpt_softc *, request_t *);
  static __inline int
  mpt_req_on_pending_list(struct mpt_softc *, request_t *);
  
  static __inline void
  mpt_req_spcl(struct mpt_softc *, request_t *, const char *, int);
  static __inline void
  mpt_req_not_spcl(struct mpt_softc *, request_t *, const char *, int);
  
  
  /*
   * Is request on freelist?
   */
  static __inline int
  mpt_req_on_free_list(struct mpt_softc *mpt, request_t *req)
  {
          request_t *lrq;
  
          TAILQ_FOREACH(lrq, &mpt->request_free_list, links) {
                  if (lrq == req) {
                          return (1);
                  }
          }
          return (0);
  }
  
  /*
   * Is request on pending list?
   */
  static __inline int
  mpt_req_on_pending_list(struct mpt_softc *mpt, request_t *req)
  {
          request_t *lrq;
  
          TAILQ_FOREACH(lrq, &mpt->request_pending_list, links) {
                  if (lrq == req) {
                          return (1);
                  }
          }
          return (0);
  }
  
  /*
   * Make sure that req *is* part of one of the special lists
   */
  static __inline void
  mpt_req_spcl(struct mpt_softc *mpt, request_t *req, const char *s, int line)
  {
          int i;
          for (i = 0; i < mpt->els_cmds_allocated; i++) {
                  if (req == mpt->els_cmd_ptrs[i]) {
                          return;
                  }
          }
          for (i = 0; i < mpt->tgt_cmds_allocated; i++) {
                  if (req == mpt->tgt_cmd_ptrs[i]) {
                          return;
                  }
          }
          panic("%s(%d): req %p:%u function %x not in els or tgt ptrs\n",
              s, line, req, req->serno,
              ((PTR_MSG_REQUEST_HEADER)req->req_vbuf)->Function);
  }
  
  /*
   * Make sure that req is *not* part of one of the special lists.
   */
  static __inline void
  mpt_req_not_spcl(struct mpt_softc *mpt, request_t *req, const char *s, int line)
  {
          int i;
          for (i = 0; i < mpt->els_cmds_allocated; i++) {
                  KASSERT(req != mpt->els_cmd_ptrs[i],
                      ("%s(%d): req %p:%u func %x in els ptrs at ioindex %d\n",
                      s, line, req, req->serno,
                      ((PTR_MSG_REQUEST_HEADER)req->req_vbuf)->Function, i));
          }
          for (i = 0; i < mpt->tgt_cmds_allocated; i++) {
                  KASSERT(req != mpt->tgt_cmd_ptrs[i],
                      ("%s(%d): req %p:%u func %x in tgt ptrs at ioindex %d\n",
                      s, line, req, req->serno,
                      ((PTR_MSG_REQUEST_HEADER)req->req_vbuf)->Function, i));
          }
  }
  #endif
  
  /*
   * Task Management Types, purely for internal consumption
   */
  typedef enum {
          MPT_ABORT_TASK_SET=1234,
          MPT_CLEAR_TASK_SET,
          MPT_TARGET_RESET,
          MPT_CLEAR_ACA,
          MPT_TERMINATE_TASK,
          MPT_NIL_TMT_VALUE=5678
  } mpt_task_mgmt_t;
  
  /**************************** Unclassified Routines ***************************/
  void            mpt_send_cmd(struct mpt_softc *mpt, request_t *req);
  int             mpt_recv_handshake_reply(struct mpt_softc *mpt,
                                           size_t reply_len, void *reply);
  int             mpt_wait_req(struct mpt_softc *mpt, request_t *req,
                               mpt_req_state_t state, mpt_req_state_t mask,
                               int sleep_ok, int time_ms);
  void            mpt_enable_ints(struct mpt_softc *mpt);
  void            mpt_disable_ints(struct mpt_softc *mpt);
  int             mpt_attach(struct mpt_softc *mpt);
  int             mpt_shutdown(struct mpt_softc *mpt);
  int             mpt_detach(struct mpt_softc *mpt);
  int             mpt_send_handshake_cmd(struct mpt_softc *mpt,
                                         size_t len, void *cmd);
  request_t *     mpt_get_request(struct mpt_softc *mpt, int sleep_ok);
  void            mpt_free_request(struct mpt_softc *mpt, request_t *req);
  void            mpt_intr(void *arg);
  void            mpt_check_doorbell(struct mpt_softc *mpt);
  void            mpt_dump_reply_frame(struct mpt_softc *mpt,
                                       MSG_DEFAULT_REPLY *reply_frame);
  
  void            mpt_set_config_regs(struct mpt_softc *);
  int             mpt_issue_cfg_req(struct mpt_softc */*mpt*/, request_t */*req*/,
                                    u_int /*Action*/, u_int /*PageVersion*/,
                                    u_int /*PageLength*/, u_int /*PageNumber*/,
                                    u_int /*PageType*/, uint32_t /*PageAddress*/,
                                    bus_addr_t /*addr*/, bus_size_t/*len*/,
                                    int /*sleep_ok*/, int /*timeout_ms*/);
  int             mpt_read_cfg_header(struct mpt_softc *, int /*PageType*/,
                                      int /*PageNumber*/,
                                      uint32_t /*PageAddress*/,
                                      CONFIG_PAGE_HEADER *,
                                      int /*sleep_ok*/, int /*timeout_ms*/);
  int             mpt_read_cfg_page(struct mpt_softc *t, int /*Action*/,
                                    uint32_t /*PageAddress*/,
                                    CONFIG_PAGE_HEADER *, size_t /*len*/,
                                    int /*sleep_ok*/, int /*timeout_ms*/);
  int             mpt_write_cfg_page(struct mpt_softc *, int /*Action*/,
                                     uint32_t /*PageAddress*/,
                                     CONFIG_PAGE_HEADER *, size_t /*len*/,
                                     int /*sleep_ok*/, int /*timeout_ms*/);
  static __inline int
  mpt_read_cur_cfg_page(struct mpt_softc *mpt, uint32_t PageAddress,
                        CONFIG_PAGE_HEADER *hdr, size_t len,
                        int sleep_ok, int timeout_ms)
  {
          return (mpt_read_cfg_page(mpt, MPI_CONFIG_ACTION_PAGE_READ_CURRENT,
                                    PageAddress, hdr, len, sleep_ok, timeout_ms));
  }
  
  static __inline int
  mpt_write_cur_cfg_page(struct mpt_softc *mpt, uint32_t PageAddress,
                         CONFIG_PAGE_HEADER *hdr, size_t len, int sleep_ok,
                         int timeout_ms)
  {
          return (mpt_write_cfg_page(mpt, MPI_CONFIG_ACTION_PAGE_WRITE_CURRENT,
                                     PageAddress, hdr, len, sleep_ok,
                                     timeout_ms));
  }
  /* mpt_debug.c functions */
  void mpt_print_reply(void *vmsg);
  void mpt_print_db(uint32_t mb);
  void mpt_print_config_reply(void *vmsg);
  char *mpt_ioc_diag(uint32_t diag);
  void mpt_req_state(mpt_req_state_t state);
  void mpt_print_config_request(void *vmsg);
  void mpt_print_request(void *vmsg);
  void mpt_print_scsi_io_request(MSG_SCSI_IO_REQUEST *msg);
  void mpt_dump_sgl(SGE_IO_UNION *se, int offset);
  #endif /* _MPT_H_ */

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