The Design and Implementation of the FreeBSD Operating System, Second Edition
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FreeBSD/Linux Kernel Cross Reference
sys/cam/cam_ccb.h

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    1 /*-
    2  * Data structures and definitions for CAM Control Blocks (CCBs).
    3  *
    4  * Copyright (c) 1997, 1998 Justin T. Gibbs.
    5  * All rights reserved.
    6  *
    7  * Redistribution and use in source and binary forms, with or without
    8  * modification, are permitted provided that the following conditions
    9  * are met:
   10  * 1. Redistributions of source code must retain the above copyright
   11  *    notice, this list of conditions, and the following disclaimer,
   12  *    without modification, immediately at the beginning of the file.
   13  * 2. The name of the author may not be used to endorse or promote products
   14  *    derived from this software without specific prior written permission.
   15  *
   16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   19  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
   20  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   26  * SUCH DAMAGE.
   27  *
   28  * $FreeBSD$
   29  */
   30 
   31 #ifndef _CAM_CAM_CCB_H
   32 #define _CAM_CAM_CCB_H 1
   33 
   34 #include <sys/queue.h>
   35 #include <sys/cdefs.h>
   36 #include <sys/time.h>
   37 #include <sys/limits.h>
   38 #ifndef _KERNEL
   39 #include <sys/callout.h>
   40 #endif
   41 #include <cam/cam_debug.h>
   42 #include <cam/scsi/scsi_all.h>
   43 
   44 
   45 /* General allocation length definitions for CCB structures */
   46 #define IOCDBLEN        CAM_MAX_CDBLEN  /* Space for CDB bytes/pointer */
   47 #define VUHBALEN        14              /* Vendor Unique HBA length */
   48 #define SIM_IDLEN       16              /* ASCII string len for SIM ID */
   49 #define HBA_IDLEN       16              /* ASCII string len for HBA ID */
   50 #define DEV_IDLEN       16              /* ASCII string len for device names */
   51 #define CCB_PERIPH_PRIV_SIZE    2       /* size of peripheral private area */
   52 #define CCB_SIM_PRIV_SIZE       2       /* size of sim private area */
   53 
   54 /* Struct definitions for CAM control blocks */
   55 
   56 /* Common CCB header */
   57 /* CAM CCB flags */
   58 typedef enum {
   59         CAM_CDB_POINTER         = 0x00000001,/* The CDB field is a pointer    */
   60         CAM_QUEUE_ENABLE        = 0x00000002,/* SIM queue actions are enabled */
   61         CAM_CDB_LINKED          = 0x00000004,/* CCB contains a linked CDB     */
   62         CAM_NEGOTIATE           = 0x00000008,/*
   63                                               * Perform transport negotiation
   64                                               * with this command.
   65                                               */
   66         CAM_SCATTER_VALID       = 0x00000010,/* Scatter/gather list is valid  */
   67         CAM_DIS_AUTOSENSE       = 0x00000020,/* Disable autosense feature     */
   68         CAM_DIR_RESV            = 0x00000000,/* Data direction (00:reserved)  */
   69         CAM_DIR_IN              = 0x00000040,/* Data direction (01:DATA IN)   */
   70         CAM_DIR_OUT             = 0x00000080,/* Data direction (10:DATA OUT)  */
   71         CAM_DIR_NONE            = 0x000000C0,/* Data direction (11:no data)   */
   72         CAM_DIR_MASK            = 0x000000C0,/* Data direction Mask           */
   73         CAM_SOFT_RST_OP         = 0x00000100,/* Use Soft reset alternative    */
   74         CAM_ENG_SYNC            = 0x00000200,/* Flush resid bytes on complete */
   75         CAM_DEV_QFRZDIS         = 0x00000400,/* Disable DEV Q freezing        */
   76         CAM_DEV_QFREEZE         = 0x00000800,/* Freeze DEV Q on execution     */
   77         CAM_HIGH_POWER          = 0x00001000,/* Command takes a lot of power  */
   78         CAM_SENSE_PTR           = 0x00002000,/* Sense data is a pointer       */
   79         CAM_SENSE_PHYS          = 0x00004000,/* Sense pointer is physical addr*/
   80         CAM_TAG_ACTION_VALID    = 0x00008000,/* Use the tag action in this ccb*/
   81         CAM_PASS_ERR_RECOVER    = 0x00010000,/* Pass driver does err. recovery*/
   82         CAM_DIS_DISCONNECT      = 0x00020000,/* Disable disconnect            */
   83         CAM_SG_LIST_PHYS        = 0x00040000,/* SG list has physical addrs.   */
   84         CAM_MSG_BUF_PHYS        = 0x00080000,/* Message buffer ptr is physical*/
   85         CAM_SNS_BUF_PHYS        = 0x00100000,/* Autosense data ptr is physical*/
   86         CAM_DATA_PHYS           = 0x00200000,/* SG/Buffer data ptrs are phys. */
   87         CAM_CDB_PHYS            = 0x00400000,/* CDB poiner is physical        */
   88         CAM_ENG_SGLIST          = 0x00800000,/* SG list is for the HBA engine */
   89 
   90 /* Phase cognizant mode flags */
   91         CAM_DIS_AUTOSRP         = 0x01000000,/* Disable autosave/restore ptrs */
   92         CAM_DIS_AUTODISC        = 0x02000000,/* Disable auto disconnect       */
   93         CAM_TGT_CCB_AVAIL       = 0x04000000,/* Target CCB available          */
   94         CAM_TGT_PHASE_MODE      = 0x08000000,/* The SIM runs in phase mode    */
   95         CAM_MSGB_VALID          = 0x10000000,/* Message buffer valid          */
   96         CAM_STATUS_VALID        = 0x20000000,/* Status buffer valid           */
   97         CAM_DATAB_VALID         = 0x40000000,/* Data buffer valid             */
   98         
   99 /* Host target Mode flags */
  100         CAM_SEND_SENSE          = 0x08000000,/* Send sense data with status   */
  101         CAM_TERM_IO             = 0x10000000,/* Terminate I/O Message sup.    */
  102         CAM_DISCONNECT          = 0x20000000,/* Disconnects are mandatory     */
  103         CAM_SEND_STATUS         = 0x40000000 /* Send status after data phase  */
  104 } ccb_flags;
  105 
  106 /* XPT Opcodes for xpt_action */
  107 typedef enum {
  108 /* Function code flags are bits greater than 0xff */
  109         XPT_FC_QUEUED           = 0x100,
  110                                 /* Non-immediate function code */
  111         XPT_FC_USER_CCB         = 0x200,
  112         XPT_FC_XPT_ONLY         = 0x400,
  113                                 /* Only for the transport layer device */
  114         XPT_FC_DEV_QUEUED       = 0x800 | XPT_FC_QUEUED,
  115                                 /* Passes through the device queues */
  116 /* Common function commands: 0x00->0x0F */
  117         XPT_NOOP                = 0x00,
  118                                 /* Execute Nothing */
  119         XPT_SCSI_IO             = 0x01 | XPT_FC_DEV_QUEUED,
  120                                 /* Execute the requested I/O operation */
  121         XPT_GDEV_TYPE           = 0x02,
  122                                 /* Get type information for specified device */
  123         XPT_GDEVLIST            = 0x03,
  124                                 /* Get a list of peripheral devices */
  125         XPT_PATH_INQ            = 0x04,
  126                                 /* Path routing inquiry */
  127         XPT_REL_SIMQ            = 0x05,
  128                                 /* Release a frozen SIM queue */
  129         XPT_SASYNC_CB           = 0x06,
  130                                 /* Set Asynchronous Callback Parameters */
  131         XPT_SDEV_TYPE           = 0x07,
  132                                 /* Set device type information */
  133         XPT_SCAN_BUS            = 0x08 | XPT_FC_QUEUED | XPT_FC_USER_CCB
  134                                        | XPT_FC_XPT_ONLY,
  135                                 /* (Re)Scan the SCSI Bus */
  136         XPT_DEV_MATCH           = 0x09 | XPT_FC_XPT_ONLY,
  137                                 /* Get EDT entries matching the given pattern */
  138         XPT_DEBUG               = 0x0a,
  139                                 /* Turn on debugging for a bus, target or lun */
  140         XPT_PATH_STATS          = 0x0b,
  141                                 /* Path statistics (error counts, etc.) */
  142         XPT_GDEV_STATS          = 0x0c,
  143                                 /* Device statistics (error counts, etc.) */
  144 /* SCSI Control Functions: 0x10->0x1F */
  145         XPT_ABORT               = 0x10,
  146                                 /* Abort the specified CCB */
  147         XPT_RESET_BUS           = 0x11 | XPT_FC_XPT_ONLY,
  148                                 /* Reset the specified SCSI bus */
  149         XPT_RESET_DEV           = 0x12 | XPT_FC_DEV_QUEUED,
  150                                 /* Bus Device Reset the specified SCSI device */
  151         XPT_TERM_IO             = 0x13,
  152                                 /* Terminate the I/O process */
  153         XPT_SCAN_LUN            = 0x14 | XPT_FC_QUEUED | XPT_FC_USER_CCB
  154                                        | XPT_FC_XPT_ONLY,
  155                                 /* Scan Logical Unit */
  156         XPT_GET_TRAN_SETTINGS   = 0x15,
  157                                 /*
  158                                  * Get default/user transfer settings
  159                                  * for the target
  160                                  */
  161         XPT_SET_TRAN_SETTINGS   = 0x16,
  162                                 /*
  163                                  * Set transfer rate/width
  164                                  * negotiation settings
  165                                  */
  166         XPT_CALC_GEOMETRY       = 0x17,
  167                                 /*
  168                                  * Calculate the geometry parameters for
  169                                  * a device give the sector size and
  170                                  * volume size.
  171                                  */
  172 
  173 /* HBA engine commands 0x20->0x2F */
  174         XPT_ENG_INQ             = 0x20 | XPT_FC_XPT_ONLY,
  175                                 /* HBA engine feature inquiry */
  176         XPT_ENG_EXEC            = 0x21 | XPT_FC_DEV_QUEUED,
  177                                 /* HBA execute engine request */
  178 
  179 /* Target mode commands: 0x30->0x3F */
  180         XPT_EN_LUN              = 0x30,
  181                                 /* Enable LUN as a target */
  182         XPT_TARGET_IO           = 0x31 | XPT_FC_DEV_QUEUED,
  183                                 /* Execute target I/O request */
  184         XPT_ACCEPT_TARGET_IO    = 0x32 | XPT_FC_QUEUED | XPT_FC_USER_CCB,
  185                                 /* Accept Host Target Mode CDB */
  186         XPT_CONT_TARGET_IO      = 0x33 | XPT_FC_DEV_QUEUED,
  187                                 /* Continue Host Target I/O Connection */
  188         XPT_IMMED_NOTIFY        = 0x34 | XPT_FC_QUEUED | XPT_FC_USER_CCB,
  189                                 /* Notify Host Target driver of event */
  190         XPT_NOTIFY_ACK          = 0x35,
  191                                 /* Acknowledgement of event */
  192 
  193 /* Vendor Unique codes: 0x80->0x8F */
  194         XPT_VUNIQUE             = 0x80
  195 } xpt_opcode;
  196 
  197 #define XPT_FC_GROUP_MASK               0xF0
  198 #define XPT_FC_GROUP(op) ((op) & XPT_FC_GROUP_MASK)
  199 #define XPT_FC_GROUP_COMMON             0x00
  200 #define XPT_FC_GROUP_SCSI_CONTROL       0x10
  201 #define XPT_FC_GROUP_HBA_ENGINE         0x20
  202 #define XPT_FC_GROUP_TMODE              0x30
  203 #define XPT_FC_GROUP_VENDOR_UNIQUE      0x80
  204 
  205 #define XPT_FC_IS_DEV_QUEUED(ccb)       \
  206     (((ccb)->ccb_h.func_code & XPT_FC_DEV_QUEUED) == XPT_FC_DEV_QUEUED)
  207 #define XPT_FC_IS_QUEUED(ccb)   \
  208     (((ccb)->ccb_h.func_code & XPT_FC_QUEUED) != 0)
  209 
  210 typedef enum {
  211         PROTO_UNKNOWN,
  212         PROTO_UNSPECIFIED,
  213         PROTO_SCSI,     /* Small Computer System Interface */
  214         PROTO_ATA,      /* AT Attachment */
  215         PROTO_ATAPI,    /* AT Attachment Packetized Interface */
  216 } cam_proto;
  217 
  218 typedef enum {
  219         XPORT_UNKNOWN,
  220         XPORT_UNSPECIFIED,
  221         XPORT_SPI,      /* SCSI Parallel Interface */
  222         XPORT_FC,       /* Fiber Channel */
  223         XPORT_SSA,      /* Serial Storage Architecture */
  224         XPORT_USB,      /* Universal Serial Bus */
  225         XPORT_PPB,      /* Parallel Port Bus */
  226         XPORT_ATA,      /* AT Attachment */
  227         XPORT_SAS,      /* Serial Attached SCSI */
  228 } cam_xport;
  229 
  230 #define PROTO_VERSION_UNKNOWN (UINT_MAX - 1)
  231 #define PROTO_VERSION_UNSPECIFIED UINT_MAX
  232 #define XPORT_VERSION_UNKNOWN (UINT_MAX - 1)
  233 #define XPORT_VERSION_UNSPECIFIED UINT_MAX
  234 
  235 typedef union {
  236         LIST_ENTRY(ccb_hdr) le;
  237         SLIST_ENTRY(ccb_hdr) sle;
  238         TAILQ_ENTRY(ccb_hdr) tqe;
  239         STAILQ_ENTRY(ccb_hdr) stqe;
  240 } camq_entry;
  241 
  242 typedef union {
  243         void            *ptr;
  244         u_long          field;
  245         u_int8_t        bytes[sizeof(uintptr_t)];
  246 } ccb_priv_entry;
  247 
  248 typedef union {
  249         ccb_priv_entry  entries[CCB_PERIPH_PRIV_SIZE];
  250         u_int8_t        bytes[CCB_PERIPH_PRIV_SIZE * sizeof(ccb_priv_entry)];
  251 } ccb_ppriv_area;
  252 
  253 typedef union {
  254         ccb_priv_entry  entries[CCB_SIM_PRIV_SIZE];
  255         u_int8_t        bytes[CCB_SIM_PRIV_SIZE * sizeof(ccb_priv_entry)];
  256 } ccb_spriv_area;
  257 
  258 struct ccb_hdr {
  259         cam_pinfo       pinfo;          /* Info for priority scheduling */
  260         camq_entry      xpt_links;      /* For chaining in the XPT layer */     
  261         camq_entry      sim_links;      /* For chaining in the SIM layer */     
  262         camq_entry      periph_links;   /* For chaining in the type driver */
  263         u_int32_t       retry_count;
  264         void            (*cbfcnp)(struct cam_periph *, union ccb *);
  265                                         /* Callback on completion function */
  266         xpt_opcode      func_code;      /* XPT function code */
  267         u_int32_t       status;         /* Status returned by CAM subsystem */
  268         struct          cam_path *path; /* Compiled path for this ccb */
  269         path_id_t       path_id;        /* Path ID for the request */
  270         target_id_t     target_id;      /* Target device ID */
  271         lun_id_t        target_lun;     /* Target LUN number */
  272         u_int32_t       flags;          /* ccb_flags */
  273         ccb_ppriv_area  periph_priv;
  274         ccb_spriv_area  sim_priv;
  275         u_int32_t       timeout;        /* Timeout value */
  276 
  277         /*
  278          * Deprecated, only for use by non-MPSAFE SIMs.  All others must
  279          * allocate and initialize their own callout storage.
  280          */
  281         struct          callout_handle timeout_ch;
  282 };
  283 
  284 /* Get Device Information CCB */
  285 struct ccb_getdev {
  286         struct    ccb_hdr ccb_h;
  287         struct scsi_inquiry_data inq_data;
  288         u_int8_t  serial_num[252];
  289         u_int8_t  reserved;
  290         u_int8_t  serial_num_len;
  291 };
  292 
  293 /* Device Statistics CCB */
  294 struct ccb_getdevstats {
  295         struct  ccb_hdr ccb_h;
  296         int     dev_openings;   /* Space left for more work on device*/ 
  297         int     dev_active;     /* Transactions running on the device */
  298         int     devq_openings;  /* Space left for more queued work */
  299         int     devq_queued;    /* Transactions queued to be sent */
  300         int     held;           /*
  301                                  * CCBs held by peripheral drivers
  302                                  * for this device
  303                                  */
  304         int     maxtags;        /*
  305                                  * Boundary conditions for number of
  306                                  * tagged operations
  307                                  */
  308         int     mintags;
  309         struct  timeval last_reset;     /* Time of last bus reset/loop init */
  310 };
  311 
  312 typedef enum {
  313         CAM_GDEVLIST_LAST_DEVICE,
  314         CAM_GDEVLIST_LIST_CHANGED,
  315         CAM_GDEVLIST_MORE_DEVS,
  316         CAM_GDEVLIST_ERROR
  317 } ccb_getdevlist_status_e;
  318 
  319 struct ccb_getdevlist {
  320         struct ccb_hdr          ccb_h;
  321         char                    periph_name[DEV_IDLEN];
  322         u_int32_t               unit_number;
  323         unsigned int            generation;
  324         u_int32_t               index;
  325         ccb_getdevlist_status_e status;
  326 };
  327 
  328 typedef enum {
  329         PERIPH_MATCH_NONE       = 0x000,
  330         PERIPH_MATCH_PATH       = 0x001,
  331         PERIPH_MATCH_TARGET     = 0x002,
  332         PERIPH_MATCH_LUN        = 0x004,
  333         PERIPH_MATCH_NAME       = 0x008,
  334         PERIPH_MATCH_UNIT       = 0x010,
  335         PERIPH_MATCH_ANY        = 0x01f
  336 } periph_pattern_flags;
  337 
  338 struct periph_match_pattern {
  339         char                    periph_name[DEV_IDLEN];
  340         u_int32_t               unit_number;
  341         path_id_t               path_id;
  342         target_id_t             target_id;
  343         lun_id_t                target_lun;
  344         periph_pattern_flags    flags;
  345 };
  346 
  347 typedef enum {
  348         DEV_MATCH_NONE          = 0x000,
  349         DEV_MATCH_PATH          = 0x001,
  350         DEV_MATCH_TARGET        = 0x002,
  351         DEV_MATCH_LUN           = 0x004,
  352         DEV_MATCH_INQUIRY       = 0x008,
  353         DEV_MATCH_ANY           = 0x00f
  354 } dev_pattern_flags;
  355 
  356 struct device_match_pattern {
  357         path_id_t                               path_id;
  358         target_id_t                             target_id;
  359         lun_id_t                                target_lun;
  360         struct scsi_static_inquiry_pattern      inq_pat;
  361         dev_pattern_flags                       flags;
  362 };
  363 
  364 typedef enum {
  365         BUS_MATCH_NONE          = 0x000,
  366         BUS_MATCH_PATH          = 0x001,
  367         BUS_MATCH_NAME          = 0x002,
  368         BUS_MATCH_UNIT          = 0x004,
  369         BUS_MATCH_BUS_ID        = 0x008,
  370         BUS_MATCH_ANY           = 0x00f
  371 } bus_pattern_flags;
  372 
  373 struct bus_match_pattern {
  374         path_id_t               path_id;
  375         char                    dev_name[DEV_IDLEN];
  376         u_int32_t               unit_number;
  377         u_int32_t               bus_id;
  378         bus_pattern_flags       flags;
  379 };
  380 
  381 union match_pattern {
  382         struct periph_match_pattern     periph_pattern;
  383         struct device_match_pattern     device_pattern;
  384         struct bus_match_pattern        bus_pattern;
  385 };
  386 
  387 typedef enum {
  388         DEV_MATCH_PERIPH,
  389         DEV_MATCH_DEVICE,
  390         DEV_MATCH_BUS
  391 } dev_match_type;
  392 
  393 struct dev_match_pattern {
  394         dev_match_type          type;
  395         union match_pattern     pattern;
  396 };
  397 
  398 struct periph_match_result {
  399         char                    periph_name[DEV_IDLEN];
  400         u_int32_t               unit_number;
  401         path_id_t               path_id;
  402         target_id_t             target_id;
  403         lun_id_t                target_lun;
  404 };
  405 
  406 typedef enum {
  407         DEV_RESULT_NOFLAG               = 0x00,
  408         DEV_RESULT_UNCONFIGURED         = 0x01
  409 } dev_result_flags;
  410 
  411 struct device_match_result {
  412         path_id_t                       path_id;
  413         target_id_t                     target_id;
  414         lun_id_t                        target_lun;
  415         struct scsi_inquiry_data        inq_data;
  416         dev_result_flags                flags;
  417 };
  418 
  419 struct bus_match_result {
  420         path_id_t       path_id;
  421         char            dev_name[DEV_IDLEN];
  422         u_int32_t       unit_number;
  423         u_int32_t       bus_id;
  424 };
  425 
  426 union match_result {
  427         struct periph_match_result      periph_result;
  428         struct device_match_result      device_result;
  429         struct bus_match_result         bus_result;
  430 };
  431 
  432 struct dev_match_result {
  433         dev_match_type          type;
  434         union match_result      result;
  435 };
  436 
  437 typedef enum {
  438         CAM_DEV_MATCH_LAST,
  439         CAM_DEV_MATCH_MORE,
  440         CAM_DEV_MATCH_LIST_CHANGED,
  441         CAM_DEV_MATCH_SIZE_ERROR,
  442         CAM_DEV_MATCH_ERROR
  443 } ccb_dev_match_status;
  444 
  445 typedef enum {
  446         CAM_DEV_POS_NONE        = 0x000,
  447         CAM_DEV_POS_BUS         = 0x001,
  448         CAM_DEV_POS_TARGET      = 0x002,
  449         CAM_DEV_POS_DEVICE      = 0x004,
  450         CAM_DEV_POS_PERIPH      = 0x008,
  451         CAM_DEV_POS_PDPTR       = 0x010,
  452         CAM_DEV_POS_TYPEMASK    = 0xf00,
  453         CAM_DEV_POS_EDT         = 0x100,
  454         CAM_DEV_POS_PDRV        = 0x200
  455 } dev_pos_type;
  456 
  457 struct ccb_dm_cookie {
  458         void    *bus;
  459         void    *target;        
  460         void    *device;
  461         void    *periph;
  462         void    *pdrv;
  463 };
  464 
  465 struct ccb_dev_position {
  466         u_int                   generations[4];
  467 #define CAM_BUS_GENERATION      0x00
  468 #define CAM_TARGET_GENERATION   0x01
  469 #define CAM_DEV_GENERATION      0x02
  470 #define CAM_PERIPH_GENERATION   0x03
  471         dev_pos_type            position_type;
  472         struct ccb_dm_cookie    cookie;
  473 };
  474 
  475 struct ccb_dev_match {
  476         struct ccb_hdr                  ccb_h;
  477         ccb_dev_match_status            status;
  478         u_int32_t                       num_patterns;
  479         u_int32_t                       pattern_buf_len;
  480         struct dev_match_pattern        *patterns;
  481         u_int32_t                       num_matches;
  482         u_int32_t                       match_buf_len;
  483         struct dev_match_result         *matches;
  484         struct ccb_dev_position         pos;
  485 };
  486 
  487 /*
  488  * Definitions for the path inquiry CCB fields.
  489  */
  490 #define CAM_VERSION     0x15    /* Hex value for current version */
  491 
  492 typedef enum {
  493         PI_MDP_ABLE     = 0x80, /* Supports MDP message */
  494         PI_WIDE_32      = 0x40, /* Supports 32 bit wide SCSI */
  495         PI_WIDE_16      = 0x20, /* Supports 16 bit wide SCSI */
  496         PI_SDTR_ABLE    = 0x10, /* Supports SDTR message */
  497         PI_LINKED_CDB   = 0x08, /* Supports linked CDBs */
  498         PI_TAG_ABLE     = 0x02, /* Supports tag queue messages */
  499         PI_SOFT_RST     = 0x01  /* Supports soft reset alternative */
  500 } pi_inqflag;
  501 
  502 typedef enum {
  503         PIT_PROCESSOR   = 0x80, /* Target mode processor mode */
  504         PIT_PHASE       = 0x40, /* Target mode phase cog. mode */
  505         PIT_DISCONNECT  = 0x20, /* Disconnects supported in target mode */
  506         PIT_TERM_IO     = 0x10, /* Terminate I/O message supported in TM */
  507         PIT_GRP_6       = 0x08, /* Group 6 commands supported */
  508         PIT_GRP_7       = 0x04  /* Group 7 commands supported */
  509 } pi_tmflag;
  510 
  511 typedef enum {
  512         PIM_SCANHILO    = 0x80, /* Bus scans from high ID to low ID */
  513         PIM_NOREMOVE    = 0x40, /* Removeable devices not included in scan */
  514         PIM_NOINITIATOR = 0x20, /* Initiator role not supported. */
  515         PIM_NOBUSRESET  = 0x10, /* User has disabled initial BUS RESET */
  516         PIM_NO_6_BYTE   = 0x08, /* Do not send 6-byte commands */
  517         PIM_SEQSCAN     = 0x04  /* Do bus scans sequentially, not in parallel */
  518 } pi_miscflag;
  519 
  520 /* Path Inquiry CCB */
  521 struct ccb_pathinq_settings_spi {
  522         u_int8_t ppr_options;
  523 };
  524 struct ccb_pathinq_settings_fc {
  525         u_int64_t wwnn;         /* world wide node name */
  526         u_int64_t wwpn;         /* world wide port name */
  527         u_int32_t port;         /* 24 bit port id, if known */
  528         u_int32_t bitrate;      /* Mbps */
  529 };
  530 struct ccb_pathinq_settings_sas {
  531         u_int32_t bitrate;      /* Mbps */
  532 };
  533 #define PATHINQ_SETTINGS_SIZE   128
  534 
  535 struct ccb_pathinq {
  536         struct      ccb_hdr ccb_h;
  537         u_int8_t    version_num;        /* Version number for the SIM/HBA */
  538         u_int8_t    hba_inquiry;        /* Mimic of INQ byte 7 for the HBA */
  539         u_int8_t    target_sprt;        /* Flags for target mode support */
  540         u_int8_t    hba_misc;           /* Misc HBA features */
  541         u_int16_t   hba_eng_cnt;        /* HBA engine count */
  542                                         /* Vendor Unique capabilities */
  543         u_int8_t    vuhba_flags[VUHBALEN];
  544         u_int32_t   max_target;         /* Maximum supported Target */
  545         u_int32_t   max_lun;            /* Maximum supported Lun */
  546         u_int32_t   async_flags;        /* Installed Async handlers */
  547         path_id_t   hpath_id;           /* Highest Path ID in the subsystem */
  548         target_id_t initiator_id;       /* ID of the HBA on the SCSI bus */
  549         char        sim_vid[SIM_IDLEN]; /* Vendor ID of the SIM */
  550         char        hba_vid[HBA_IDLEN]; /* Vendor ID of the HBA */
  551         char        dev_name[DEV_IDLEN];/* Device name for SIM */
  552         u_int32_t   unit_number;        /* Unit number for SIM */
  553         u_int32_t   bus_id;             /* Bus ID for SIM */
  554         u_int32_t   base_transfer_speed;/* Base bus speed in KB/sec */
  555         cam_proto   protocol;
  556         u_int       protocol_version;
  557         cam_xport   transport;
  558         u_int       transport_version;
  559         union {
  560                 struct ccb_pathinq_settings_spi spi;
  561                 struct ccb_pathinq_settings_fc fc;
  562                 struct ccb_pathinq_settings_sas sas;
  563                 char ccb_pathinq_settings_opaque[PATHINQ_SETTINGS_SIZE];
  564         } xport_specific;
  565 };
  566 
  567 /* Path Statistics CCB */
  568 struct ccb_pathstats {
  569         struct  ccb_hdr ccb_h;
  570         struct  timeval last_reset;     /* Time of last bus reset/loop init */
  571 };
  572 
  573 typedef union {
  574         u_int8_t *sense_ptr;            /*
  575                                          * Pointer to storage
  576                                          * for sense information
  577                                          */
  578                                         /* Storage Area for sense information */
  579         struct   scsi_sense_data sense_buf;
  580 } sense_t;
  581 
  582 typedef union {
  583         u_int8_t  *cdb_ptr;             /* Pointer to the CDB bytes to send */
  584                                         /* Area for the CDB send */
  585         u_int8_t  cdb_bytes[IOCDBLEN];
  586 } cdb_t;
  587 
  588 /*
  589  * SCSI I/O Request CCB used for the XPT_SCSI_IO and XPT_CONT_TARGET_IO
  590  * function codes.
  591  */
  592 struct ccb_scsiio {
  593         struct     ccb_hdr ccb_h;
  594         union      ccb *next_ccb;       /* Ptr for next CCB for action */
  595         u_int8_t   *req_map;            /* Ptr to mapping info */
  596         u_int8_t   *data_ptr;           /* Ptr to the data buf/SG list */
  597         u_int32_t  dxfer_len;           /* Data transfer length */
  598                                         /* Autosense storage */ 
  599         struct     scsi_sense_data sense_data;
  600         u_int8_t   sense_len;           /* Number of bytes to autosense */
  601         u_int8_t   cdb_len;             /* Number of bytes for the CDB */
  602         u_int16_t  sglist_cnt;          /* Number of SG list entries */
  603         u_int8_t   scsi_status;         /* Returned SCSI status */
  604         u_int8_t   sense_resid;         /* Autosense resid length: 2's comp */
  605         u_int32_t  resid;               /* Transfer residual length: 2's comp */
  606         cdb_t      cdb_io;              /* Union for CDB bytes/pointer */
  607         u_int8_t   *msg_ptr;            /* Pointer to the message buffer */
  608         u_int16_t  msg_len;             /* Number of bytes for the Message */
  609         u_int8_t   tag_action;          /* What to do for tag queueing */
  610         /*
  611          * The tag action should be either the define below (to send a
  612          * non-tagged transaction) or one of the defined scsi tag messages
  613          * from scsi_message.h.
  614          */
  615 #define         CAM_TAG_ACTION_NONE     0x00
  616         u_int      tag_id;              /* tag id from initator (target mode) */
  617         u_int      init_id;             /* initiator id of who selected */
  618 };
  619 
  620 struct ccb_accept_tio {
  621         struct     ccb_hdr ccb_h;
  622         cdb_t      cdb_io;              /* Union for CDB bytes/pointer */
  623         u_int8_t   cdb_len;             /* Number of bytes for the CDB */
  624         u_int8_t   tag_action;          /* What to do for tag queueing */
  625         u_int8_t   sense_len;           /* Number of bytes of Sense Data */
  626         u_int      tag_id;              /* tag id from initator (target mode) */
  627         u_int      init_id;             /* initiator id of who selected */
  628         struct     scsi_sense_data sense_data;
  629 };
  630 
  631 /* Release SIM Queue */
  632 struct ccb_relsim {
  633         struct ccb_hdr ccb_h;
  634         u_int32_t      release_flags;
  635 #define RELSIM_ADJUST_OPENINGS          0x01
  636 #define RELSIM_RELEASE_AFTER_TIMEOUT    0x02
  637 #define RELSIM_RELEASE_AFTER_CMDCMPLT   0x04
  638 #define RELSIM_RELEASE_AFTER_QEMPTY     0x08
  639         u_int32_t      openings;
  640         u_int32_t      release_timeout;
  641         u_int32_t      qfrozen_cnt;
  642 };
  643 
  644 /*
  645  * Definitions for the asynchronous callback CCB fields.
  646  */
  647 typedef enum {
  648         AC_GETDEV_CHANGED       = 0x800,/* Getdev info might have changed */
  649         AC_INQ_CHANGED          = 0x400,/* Inquiry info might have changed */
  650         AC_TRANSFER_NEG         = 0x200,/* New transfer settings in effect */
  651         AC_LOST_DEVICE          = 0x100,/* A device went away */
  652         AC_FOUND_DEVICE         = 0x080,/* A new device was found */
  653         AC_PATH_DEREGISTERED    = 0x040,/* A path has de-registered */
  654         AC_PATH_REGISTERED      = 0x020,/* A new path has been registered */
  655         AC_SENT_BDR             = 0x010,/* A BDR message was sent to target */
  656         AC_SCSI_AEN             = 0x008,/* A SCSI AEN has been received */
  657         AC_UNSOL_RESEL          = 0x002,/* Unsolicited reselection occurred */
  658         AC_BUS_RESET            = 0x001 /* A SCSI bus reset occurred */
  659 } ac_code;
  660 
  661 typedef void ac_callback_t (void *softc, u_int32_t code,
  662                             struct cam_path *path, void *args);
  663 
  664 /* Set Asynchronous Callback CCB */
  665 struct ccb_setasync {
  666         struct ccb_hdr   ccb_h;
  667         u_int32_t        event_enable;  /* Async Event enables */       
  668         ac_callback_t   *callback;
  669         void            *callback_arg;
  670 };
  671 
  672 /* Set Device Type CCB */
  673 struct ccb_setdev {
  674         struct     ccb_hdr ccb_h;
  675         u_int8_t   dev_type;    /* Value for dev type field in EDT */
  676 };
  677 
  678 /* SCSI Control Functions */
  679 
  680 /* Abort XPT request CCB */
  681 struct ccb_abort {
  682         struct  ccb_hdr ccb_h;
  683         union   ccb *abort_ccb; /* Pointer to CCB to abort */
  684 };
  685 
  686 /* Reset SCSI Bus CCB */
  687 struct ccb_resetbus {
  688         struct  ccb_hdr ccb_h;
  689 };
  690 
  691 /* Reset SCSI Device CCB */
  692 struct ccb_resetdev {
  693         struct  ccb_hdr ccb_h;
  694 };
  695 
  696 /* Terminate I/O Process Request CCB */
  697 struct ccb_termio {
  698         struct  ccb_hdr ccb_h;
  699         union   ccb *termio_ccb;        /* Pointer to CCB to terminate */
  700 };
  701 
  702 typedef enum {
  703         CTS_TYPE_CURRENT_SETTINGS,
  704         CTS_TYPE_USER_SETTINGS
  705 } cts_type;
  706 
  707 struct ccb_trans_settings_scsi
  708 {
  709         u_int   valid;  /* Which fields to honor */
  710 #define CTS_SCSI_VALID_TQ               0x01
  711         u_int   flags;
  712 #define CTS_SCSI_FLAGS_TAG_ENB          0x01
  713 };
  714 
  715 struct ccb_trans_settings_spi
  716 {
  717         u_int     valid;        /* Which fields to honor */
  718 #define CTS_SPI_VALID_SYNC_RATE         0x01
  719 #define CTS_SPI_VALID_SYNC_OFFSET       0x02
  720 #define CTS_SPI_VALID_BUS_WIDTH         0x04
  721 #define CTS_SPI_VALID_DISC              0x08
  722 #define CTS_SPI_VALID_PPR_OPTIONS       0x10
  723         u_int   flags;
  724 #define CTS_SPI_FLAGS_DISC_ENB          0x01
  725         u_int   sync_period;
  726         u_int   sync_offset;
  727         u_int   bus_width;
  728         u_int   ppr_options;
  729 };
  730 
  731 struct ccb_trans_settings_fc {
  732         u_int           valid;          /* Which fields to honor */
  733 #define CTS_FC_VALID_WWNN               0x8000
  734 #define CTS_FC_VALID_WWPN               0x4000
  735 #define CTS_FC_VALID_PORT               0x2000
  736 #define CTS_FC_VALID_SPEED              0x1000
  737         u_int64_t       wwnn;           /* world wide node name */
  738         u_int64_t       wwpn;           /* world wide port name */
  739         u_int32_t       port;           /* 24 bit port id, if known */
  740         u_int32_t       bitrate;        /* Mbps */
  741 };
  742 
  743 struct ccb_trans_settings_sas {
  744         u_int           valid;          /* Which fields to honor */
  745 #define CTS_SAS_VALID_SPEED             0x1000
  746         u_int32_t       bitrate;        /* Mbps */
  747 };
  748 
  749 
  750 /* Get/Set transfer rate/width/disconnection/tag queueing settings */
  751 struct ccb_trans_settings {
  752         struct    ccb_hdr ccb_h;
  753         cts_type  type;         /* Current or User settings */
  754         cam_proto protocol;
  755         u_int     protocol_version;
  756         cam_xport transport;
  757         u_int     transport_version;
  758         union {
  759                 u_int  valid;   /* Which fields to honor */
  760                 struct ccb_trans_settings_scsi scsi;
  761         } proto_specific;
  762         union {
  763                 u_int  valid;   /* Which fields to honor */
  764                 struct ccb_trans_settings_spi spi;
  765                 struct ccb_trans_settings_fc fc;
  766                 struct ccb_trans_settings_sas sas;
  767         } xport_specific;
  768 };
  769 
  770 
  771 /*
  772  * Calculate the geometry parameters for a device
  773  * give the block size and volume size in blocks.
  774  */
  775 struct ccb_calc_geometry {
  776         struct    ccb_hdr ccb_h;
  777         u_int32_t block_size;
  778         u_int64_t volume_size;
  779         u_int32_t cylinders;            
  780         u_int8_t  heads;
  781         u_int8_t  secs_per_track;
  782 };
  783 
  784 /*
  785  * Rescan the given bus, or bus/target/lun
  786  */
  787 struct ccb_rescan {
  788         struct  ccb_hdr ccb_h;
  789         cam_flags       flags;
  790 };
  791 
  792 /*
  793  * Turn on debugging for the given bus, bus/target, or bus/target/lun.
  794  */
  795 struct ccb_debug {
  796         struct  ccb_hdr ccb_h;
  797         cam_debug_flags flags;
  798 };
  799 
  800 /* Target mode structures. */
  801 
  802 struct ccb_en_lun {
  803         struct    ccb_hdr ccb_h;
  804         u_int16_t grp6_len;             /* Group 6 VU CDB length */
  805         u_int16_t grp7_len;             /* Group 7 VU CDB length */
  806         u_int8_t  enable;
  807 };
  808 
  809 struct ccb_immed_notify {
  810         struct    ccb_hdr ccb_h;
  811         struct    scsi_sense_data sense_data;
  812         u_int8_t  sense_len;            /* Number of bytes in sense buffer */
  813         u_int8_t  initiator_id;         /* Id of initiator that selected */
  814         u_int8_t  message_args[7];      /* Message Arguments */
  815 };
  816 
  817 struct ccb_notify_ack {
  818         struct    ccb_hdr ccb_h;
  819         u_int16_t seq_id;               /* Sequence identifier */
  820         u_int8_t  event;                /* Event flags */
  821 };
  822 
  823 /* HBA engine structures. */
  824 
  825 typedef enum {
  826         EIT_BUFFER,     /* Engine type: buffer memory */
  827         EIT_LOSSLESS,   /* Engine type: lossless compression */
  828         EIT_LOSSY,      /* Engine type: lossy compression */
  829         EIT_ENCRYPT     /* Engine type: encryption */
  830 } ei_type;
  831 
  832 typedef enum {
  833         EAD_VUNIQUE,    /* Engine algorithm ID: vendor unique */
  834         EAD_LZ1V1,      /* Engine algorithm ID: LZ1 var.1 */
  835         EAD_LZ2V1,      /* Engine algorithm ID: LZ2 var.1 */
  836         EAD_LZ2V2       /* Engine algorithm ID: LZ2 var.2 */
  837 } ei_algo;
  838 
  839 struct ccb_eng_inq {
  840         struct    ccb_hdr ccb_h;
  841         u_int16_t eng_num;      /* The engine number for this inquiry */
  842         ei_type   eng_type;     /* Returned engine type */
  843         ei_algo   eng_algo;     /* Returned engine algorithm type */
  844         u_int32_t eng_memeory;  /* Returned engine memory size */
  845 };
  846 
  847 struct ccb_eng_exec {   /* This structure must match SCSIIO size */
  848         struct    ccb_hdr ccb_h;
  849         u_int8_t  *pdrv_ptr;    /* Ptr used by the peripheral driver */
  850         u_int8_t  *req_map;     /* Ptr for mapping info on the req. */
  851         u_int8_t  *data_ptr;    /* Pointer to the data buf/SG list */
  852         u_int32_t dxfer_len;    /* Data transfer length */
  853         u_int8_t  *engdata_ptr; /* Pointer to the engine buffer data */
  854         u_int16_t sglist_cnt;   /* Num of scatter gather list entries */
  855         u_int32_t dmax_len;     /* Destination data maximum length */
  856         u_int32_t dest_len;     /* Destination data length */
  857         int32_t   src_resid;    /* Source residual length: 2's comp */
  858         u_int32_t timeout;      /* Timeout value */
  859         u_int16_t eng_num;      /* Engine number for this request */
  860         u_int16_t vu_flags;     /* Vendor Unique flags */
  861 };
  862 
  863 /*
  864  * Definitions for the timeout field in the SCSI I/O CCB.
  865  */
  866 #define CAM_TIME_DEFAULT        0x00000000      /* Use SIM default value */
  867 #define CAM_TIME_INFINITY       0xFFFFFFFF      /* Infinite timeout */
  868 
  869 #define CAM_SUCCESS     0       /* For signaling general success */
  870 #define CAM_FAILURE     1       /* For signaling general failure */
  871 
  872 #define CAM_FALSE       0
  873 #define CAM_TRUE        1
  874 
  875 #define XPT_CCB_INVALID -1      /* for signaling a bad CCB to free */
  876 
  877 /*
  878  * Union of all CCB types for kernel space allocation.  This union should
  879  * never be used for manipulating CCBs - its only use is for the allocation
  880  * and deallocation of raw CCB space and is the return type of xpt_ccb_alloc
  881  * and the argument to xpt_ccb_free.
  882  */
  883 union ccb {
  884         struct  ccb_hdr                 ccb_h;  /* For convenience */
  885         struct  ccb_scsiio              csio;
  886         struct  ccb_getdev              cgd;
  887         struct  ccb_getdevlist          cgdl;
  888         struct  ccb_pathinq             cpi;
  889         struct  ccb_relsim              crs;
  890         struct  ccb_setasync            csa;
  891         struct  ccb_setdev              csd;
  892         struct  ccb_pathstats           cpis;
  893         struct  ccb_getdevstats         cgds;
  894         struct  ccb_dev_match           cdm;
  895         struct  ccb_trans_settings      cts;
  896         struct  ccb_calc_geometry       ccg;    
  897         struct  ccb_abort               cab;
  898         struct  ccb_resetbus            crb;
  899         struct  ccb_resetdev            crd;
  900         struct  ccb_termio              tio;
  901         struct  ccb_accept_tio          atio;
  902         struct  ccb_scsiio              ctio;
  903         struct  ccb_en_lun              cel;
  904         struct  ccb_immed_notify        cin;
  905         struct  ccb_notify_ack          cna;
  906         struct  ccb_eng_inq             cei;
  907         struct  ccb_eng_exec            cee;
  908         struct  ccb_rescan              crcn;
  909         struct  ccb_debug               cdbg;
  910 };
  911 
  912 __BEGIN_DECLS
  913 static __inline void
  914 cam_fill_csio(struct ccb_scsiio *csio, u_int32_t retries,
  915               void (*cbfcnp)(struct cam_periph *, union ccb *),
  916               u_int32_t flags, u_int8_t tag_action,
  917               u_int8_t *data_ptr, u_int32_t dxfer_len,
  918               u_int8_t sense_len, u_int8_t cdb_len,
  919               u_int32_t timeout);
  920 
  921 static __inline void
  922 cam_fill_ctio(struct ccb_scsiio *csio, u_int32_t retries,
  923               void (*cbfcnp)(struct cam_periph *, union ccb *),
  924               u_int32_t flags, u_int tag_action, u_int tag_id,
  925               u_int init_id, u_int scsi_status, u_int8_t *data_ptr,
  926               u_int32_t dxfer_len, u_int32_t timeout);
  927         
  928 static __inline void
  929 cam_fill_csio(struct ccb_scsiio *csio, u_int32_t retries,
  930               void (*cbfcnp)(struct cam_periph *, union ccb *),
  931               u_int32_t flags, u_int8_t tag_action,
  932               u_int8_t *data_ptr, u_int32_t dxfer_len,
  933               u_int8_t sense_len, u_int8_t cdb_len,
  934               u_int32_t timeout)
  935 {
  936         csio->ccb_h.func_code = XPT_SCSI_IO;
  937         csio->ccb_h.flags = flags;
  938         csio->ccb_h.retry_count = retries;      
  939         csio->ccb_h.cbfcnp = cbfcnp;
  940         csio->ccb_h.timeout = timeout;
  941         csio->data_ptr = data_ptr;
  942         csio->dxfer_len = dxfer_len;
  943         csio->sense_len = sense_len;
  944         csio->cdb_len = cdb_len;
  945         csio->tag_action = tag_action;
  946 }
  947 
  948 static __inline void
  949 cam_fill_ctio(struct ccb_scsiio *csio, u_int32_t retries,
  950               void (*cbfcnp)(struct cam_periph *, union ccb *),
  951               u_int32_t flags, u_int tag_action, u_int tag_id,
  952               u_int init_id, u_int scsi_status, u_int8_t *data_ptr,
  953               u_int32_t dxfer_len, u_int32_t timeout)
  954 {
  955         csio->ccb_h.func_code = XPT_CONT_TARGET_IO;
  956         csio->ccb_h.flags = flags;
  957         csio->ccb_h.retry_count = retries;      
  958         csio->ccb_h.cbfcnp = cbfcnp;
  959         csio->ccb_h.timeout = timeout;
  960         csio->data_ptr = data_ptr;
  961         csio->dxfer_len = dxfer_len;
  962         csio->scsi_status = scsi_status;
  963         csio->tag_action = tag_action;
  964         csio->tag_id = tag_id;
  965         csio->init_id = init_id;
  966 }
  967 
  968 void cam_calc_geometry(struct ccb_calc_geometry *ccg, int extended);
  969 
  970 __END_DECLS
  971 
  972 #endif /* _CAM_CAM_CCB_H */

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