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: releng/11.2/sys/cam/cam_ccb.h 328750 2018-02-01 21:25:56Z mav $
   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 #include <cam/ata/ata_all.h>
   44 #include <cam/nvme/nvme_all.h>
   45 
   46 /* General allocation length definitions for CCB structures */
   47 #define IOCDBLEN        CAM_MAX_CDBLEN  /* Space for CDB bytes/pointer */
   48 #define VUHBALEN        14              /* Vendor Unique HBA length */
   49 #define SIM_IDLEN       16              /* ASCII string len for SIM ID */
   50 #define HBA_IDLEN       16              /* ASCII string len for HBA ID */
   51 #define DEV_IDLEN       16              /* ASCII string len for device names */
   52 #define CCB_PERIPH_PRIV_SIZE    2       /* size of peripheral private area */
   53 #define CCB_SIM_PRIV_SIZE       2       /* size of sim private area */
   54 
   55 /* Struct definitions for CAM control blocks */
   56 
   57 /* Common CCB header */
   58 /* CAM CCB flags */
   59 typedef enum {
   60         CAM_CDB_POINTER         = 0x00000001,/* The CDB field is a pointer    */
   61         CAM_QUEUE_ENABLE        = 0x00000002,/* SIM queue actions are enabled */
   62         CAM_CDB_LINKED          = 0x00000004,/* CCB contains a linked CDB     */
   63         CAM_NEGOTIATE           = 0x00000008,/*
   64                                               * Perform transport negotiation
   65                                               * with this command.
   66                                               */
   67         CAM_DATA_ISPHYS         = 0x00000010,/* Data type with physical addrs */
   68         CAM_DIS_AUTOSENSE       = 0x00000020,/* Disable autosense feature     */
   69         CAM_DIR_BOTH            = 0x00000000,/* Data direction (00:IN/OUT)    */
   70         CAM_DIR_IN              = 0x00000040,/* Data direction (01:DATA IN)   */
   71         CAM_DIR_OUT             = 0x00000080,/* Data direction (10:DATA OUT)  */
   72         CAM_DIR_NONE            = 0x000000C0,/* Data direction (11:no data)   */
   73         CAM_DIR_MASK            = 0x000000C0,/* Data direction Mask           */
   74         CAM_DATA_VADDR          = 0x00000000,/* Data type (000:Virtual)       */
   75         CAM_DATA_PADDR          = 0x00000010,/* Data type (001:Physical)      */
   76         CAM_DATA_SG             = 0x00040000,/* Data type (010:sglist)        */
   77         CAM_DATA_SG_PADDR       = 0x00040010,/* Data type (011:sglist phys)   */
   78         CAM_DATA_BIO            = 0x00200000,/* Data type (100:bio)           */
   79         CAM_DATA_MASK           = 0x00240010,/* Data type mask                */
   80         CAM_SOFT_RST_OP         = 0x00000100,/* Use Soft reset alternative    */
   81         CAM_ENG_SYNC            = 0x00000200,/* Flush resid bytes on complete */
   82         CAM_DEV_QFRZDIS         = 0x00000400,/* Disable DEV Q freezing        */
   83         CAM_DEV_QFREEZE         = 0x00000800,/* Freeze DEV Q on execution     */
   84         CAM_HIGH_POWER          = 0x00001000,/* Command takes a lot of power  */
   85         CAM_SENSE_PTR           = 0x00002000,/* Sense data is a pointer       */
   86         CAM_SENSE_PHYS          = 0x00004000,/* Sense pointer is physical addr*/
   87         CAM_TAG_ACTION_VALID    = 0x00008000,/* Use the tag action in this ccb*/
   88         CAM_PASS_ERR_RECOVER    = 0x00010000,/* Pass driver does err. recovery*/
   89         CAM_DIS_DISCONNECT      = 0x00020000,/* Disable disconnect            */
   90         CAM_MSG_BUF_PHYS        = 0x00080000,/* Message buffer ptr is physical*/
   91         CAM_SNS_BUF_PHYS        = 0x00100000,/* Autosense data ptr is physical*/
   92         CAM_CDB_PHYS            = 0x00400000,/* CDB poiner is physical        */
   93         CAM_ENG_SGLIST          = 0x00800000,/* SG list is for the HBA engine */
   94 
   95 /* Phase cognizant mode flags */
   96         CAM_DIS_AUTOSRP         = 0x01000000,/* Disable autosave/restore ptrs */
   97         CAM_DIS_AUTODISC        = 0x02000000,/* Disable auto disconnect       */
   98         CAM_TGT_CCB_AVAIL       = 0x04000000,/* Target CCB available          */
   99         CAM_TGT_PHASE_MODE      = 0x08000000,/* The SIM runs in phase mode    */
  100         CAM_MSGB_VALID          = 0x10000000,/* Message buffer valid          */
  101         CAM_STATUS_VALID        = 0x20000000,/* Status buffer valid           */
  102         CAM_DATAB_VALID         = 0x40000000,/* Data buffer valid             */
  103 
  104 /* Host target Mode flags */
  105         CAM_SEND_SENSE          = 0x08000000,/* Send sense data with status   */
  106         CAM_TERM_IO             = 0x10000000,/* Terminate I/O Message sup.    */
  107         CAM_DISCONNECT          = 0x20000000,/* Disconnects are mandatory     */
  108         CAM_SEND_STATUS         = 0x40000000,/* Send status after data phase  */
  109 
  110         CAM_UNLOCKED            = 0x80000000 /* Call callback without lock.   */
  111 } ccb_flags;
  112 
  113 typedef enum {
  114         CAM_USER_DATA_ADDR      = 0x00000002,/* Userspace data pointers */
  115         CAM_SG_FORMAT_IOVEC     = 0x00000004,/* iovec instead of busdma S/G*/
  116         CAM_UNMAPPED_BUF        = 0x00000008 /* use unmapped I/O */
  117 } ccb_xflags;
  118 
  119 /* XPT Opcodes for xpt_action */
  120 typedef enum {
  121 /* Function code flags are bits greater than 0xff */
  122         XPT_FC_QUEUED           = 0x100,
  123                                 /* Non-immediate function code */
  124         XPT_FC_USER_CCB         = 0x200,
  125         XPT_FC_XPT_ONLY         = 0x400,
  126                                 /* Only for the transport layer device */
  127         XPT_FC_DEV_QUEUED       = 0x800 | XPT_FC_QUEUED,
  128                                 /* Passes through the device queues */
  129 /* Common function commands: 0x00->0x0F */
  130         XPT_NOOP                = 0x00,
  131                                 /* Execute Nothing */
  132         XPT_SCSI_IO             = 0x01 | XPT_FC_DEV_QUEUED,
  133                                 /* Execute the requested I/O operation */
  134         XPT_GDEV_TYPE           = 0x02,
  135                                 /* Get type information for specified device */
  136         XPT_GDEVLIST            = 0x03,
  137                                 /* Get a list of peripheral devices */
  138         XPT_PATH_INQ            = 0x04,
  139                                 /* Path routing inquiry */
  140         XPT_REL_SIMQ            = 0x05,
  141                                 /* Release a frozen device queue */
  142         XPT_SASYNC_CB           = 0x06,
  143                                 /* Set Asynchronous Callback Parameters */
  144         XPT_SDEV_TYPE           = 0x07,
  145                                 /* Set device type information */
  146         XPT_SCAN_BUS            = 0x08 | XPT_FC_QUEUED | XPT_FC_USER_CCB
  147                                        | XPT_FC_XPT_ONLY,
  148                                 /* (Re)Scan the SCSI Bus */
  149         XPT_DEV_MATCH           = 0x09 | XPT_FC_XPT_ONLY,
  150                                 /* Get EDT entries matching the given pattern */
  151         XPT_DEBUG               = 0x0a,
  152                                 /* Turn on debugging for a bus, target or lun */
  153         XPT_PATH_STATS          = 0x0b,
  154                                 /* Path statistics (error counts, etc.) */
  155         XPT_GDEV_STATS          = 0x0c,
  156                                 /* Device statistics (error counts, etc.) */
  157         XPT_DEV_ADVINFO         = 0x0e,
  158                                 /* Get/Set Device advanced information */
  159         XPT_ASYNC               = 0x0f | XPT_FC_QUEUED | XPT_FC_USER_CCB
  160                                        | XPT_FC_XPT_ONLY,
  161                                 /* Asynchronous event */
  162 /* SCSI Control Functions: 0x10->0x1F */
  163         XPT_ABORT               = 0x10,
  164                                 /* Abort the specified CCB */
  165         XPT_RESET_BUS           = 0x11 | XPT_FC_XPT_ONLY,
  166                                 /* Reset the specified SCSI bus */
  167         XPT_RESET_DEV           = 0x12 | XPT_FC_DEV_QUEUED,
  168                                 /* Bus Device Reset the specified SCSI device */
  169         XPT_TERM_IO             = 0x13,
  170                                 /* Terminate the I/O process */
  171         XPT_SCAN_LUN            = 0x14 | XPT_FC_QUEUED | XPT_FC_USER_CCB
  172                                        | XPT_FC_XPT_ONLY,
  173                                 /* Scan Logical Unit */
  174         XPT_GET_TRAN_SETTINGS   = 0x15,
  175                                 /*
  176                                  * Get default/user transfer settings
  177                                  * for the target
  178                                  */
  179         XPT_SET_TRAN_SETTINGS   = 0x16,
  180                                 /*
  181                                  * Set transfer rate/width
  182                                  * negotiation settings
  183                                  */
  184         XPT_CALC_GEOMETRY       = 0x17,
  185                                 /*
  186                                  * Calculate the geometry parameters for
  187                                  * a device give the sector size and
  188                                  * volume size.
  189                                  */
  190         XPT_ATA_IO              = 0x18 | XPT_FC_DEV_QUEUED,
  191                                 /* Execute the requested ATA I/O operation */
  192 
  193         XPT_GET_SIM_KNOB_OLD    = 0x18, /* Compat only */
  194 
  195         XPT_SET_SIM_KNOB        = 0x19,
  196                                 /*
  197                                  * Set SIM specific knob values.
  198                                  */
  199 
  200         XPT_GET_SIM_KNOB        = 0x1a,
  201                                 /*
  202                                  * Get SIM specific knob values.
  203                                  */
  204 
  205         XPT_SMP_IO              = 0x1b | XPT_FC_DEV_QUEUED,
  206                                 /* Serial Management Protocol */
  207 
  208         XPT_NVME_IO             = 0x1c | XPT_FC_DEV_QUEUED,
  209                                 /* Execute the requested NVMe I/O operation */
  210 
  211         XPT_MMCSD_IO            = 0x1d | XPT_FC_DEV_QUEUED,
  212                                 /* Placeholder for MMC / SD / SDIO I/O stuff */
  213 
  214         XPT_SCAN_TGT            = 0x1E | XPT_FC_QUEUED | XPT_FC_USER_CCB
  215                                        | XPT_FC_XPT_ONLY,
  216                                 /* Scan Target */
  217 
  218         XPT_NVME_ADMIN          = 0x1f | XPT_FC_DEV_QUEUED,
  219                                 /* Execute the requested NVMe Admin operation */
  220 
  221 /* HBA engine commands 0x20->0x2F */
  222         XPT_ENG_INQ             = 0x20 | XPT_FC_XPT_ONLY,
  223                                 /* HBA engine feature inquiry */
  224         XPT_ENG_EXEC            = 0x21 | XPT_FC_DEV_QUEUED,
  225                                 /* HBA execute engine request */
  226 
  227 /* Target mode commands: 0x30->0x3F */
  228         XPT_EN_LUN              = 0x30,
  229                                 /* Enable LUN as a target */
  230         XPT_TARGET_IO           = 0x31 | XPT_FC_DEV_QUEUED,
  231                                 /* Execute target I/O request */
  232         XPT_ACCEPT_TARGET_IO    = 0x32 | XPT_FC_QUEUED | XPT_FC_USER_CCB,
  233                                 /* Accept Host Target Mode CDB */
  234         XPT_CONT_TARGET_IO      = 0x33 | XPT_FC_DEV_QUEUED,
  235                                 /* Continue Host Target I/O Connection */
  236         XPT_IMMED_NOTIFY        = 0x34 | XPT_FC_QUEUED | XPT_FC_USER_CCB,
  237                                 /* Notify Host Target driver of event (obsolete) */
  238         XPT_NOTIFY_ACK          = 0x35,
  239                                 /* Acknowledgement of event (obsolete) */
  240         XPT_IMMEDIATE_NOTIFY    = 0x36 | XPT_FC_QUEUED | XPT_FC_USER_CCB,
  241                                 /* Notify Host Target driver of event */
  242         XPT_NOTIFY_ACKNOWLEDGE  = 0x37 | XPT_FC_QUEUED | XPT_FC_USER_CCB,
  243                                 /* Acknowledgement of event */
  244         XPT_REPROBE_LUN         = 0x38 | XPT_FC_QUEUED | XPT_FC_USER_CCB,
  245                                 /* Query device capacity and notify GEOM */
  246 
  247 /* Vendor Unique codes: 0x80->0x8F */
  248         XPT_VUNIQUE             = 0x80
  249 } xpt_opcode;
  250 
  251 #define XPT_FC_GROUP_MASK               0xF0
  252 #define XPT_FC_GROUP(op) ((op) & XPT_FC_GROUP_MASK)
  253 #define XPT_FC_GROUP_COMMON             0x00
  254 #define XPT_FC_GROUP_SCSI_CONTROL       0x10
  255 #define XPT_FC_GROUP_HBA_ENGINE         0x20
  256 #define XPT_FC_GROUP_TMODE              0x30
  257 #define XPT_FC_GROUP_VENDOR_UNIQUE      0x80
  258 
  259 #define XPT_FC_IS_DEV_QUEUED(ccb)       \
  260     (((ccb)->ccb_h.func_code & XPT_FC_DEV_QUEUED) == XPT_FC_DEV_QUEUED)
  261 #define XPT_FC_IS_QUEUED(ccb)   \
  262     (((ccb)->ccb_h.func_code & XPT_FC_QUEUED) != 0)
  263 
  264 typedef enum {
  265         PROTO_UNKNOWN,
  266         PROTO_UNSPECIFIED,
  267         PROTO_SCSI,     /* Small Computer System Interface */
  268         PROTO_ATA,      /* AT Attachment */
  269         PROTO_ATAPI,    /* AT Attachment Packetized Interface */
  270         PROTO_SATAPM,   /* SATA Port Multiplier */
  271         PROTO_SEMB,     /* SATA Enclosure Management Bridge */
  272         PROTO_NVME,     /* NVME */
  273 } cam_proto;
  274 
  275 typedef enum {
  276         XPORT_UNKNOWN,
  277         XPORT_UNSPECIFIED,
  278         XPORT_SPI,      /* SCSI Parallel Interface */
  279         XPORT_FC,       /* Fiber Channel */
  280         XPORT_SSA,      /* Serial Storage Architecture */
  281         XPORT_USB,      /* Universal Serial Bus */
  282         XPORT_PPB,      /* Parallel Port Bus */
  283         XPORT_ATA,      /* AT Attachment */
  284         XPORT_SAS,      /* Serial Attached SCSI */
  285         XPORT_SATA,     /* Serial AT Attachment */
  286         XPORT_ISCSI,    /* iSCSI */
  287         XPORT_SRP,      /* SCSI RDMA Protocol */
  288         XPORT_NVME,     /* NVMe over PCIe */
  289 } cam_xport;
  290 
  291 #define XPORT_IS_ATA(t)         ((t) == XPORT_ATA || (t) == XPORT_SATA)
  292 #define XPORT_IS_SCSI(t)        ((t) != XPORT_UNKNOWN && \
  293                                  (t) != XPORT_UNSPECIFIED && \
  294                                  !XPORT_IS_ATA(t))
  295 #define XPORT_DEVSTAT_TYPE(t)   (XPORT_IS_ATA(t) ? DEVSTAT_TYPE_IF_IDE : \
  296                                  XPORT_IS_SCSI(t) ? DEVSTAT_TYPE_IF_SCSI : \
  297                                  DEVSTAT_TYPE_IF_OTHER)
  298 
  299 #define PROTO_VERSION_UNKNOWN (UINT_MAX - 1)
  300 #define PROTO_VERSION_UNSPECIFIED UINT_MAX
  301 #define XPORT_VERSION_UNKNOWN (UINT_MAX - 1)
  302 #define XPORT_VERSION_UNSPECIFIED UINT_MAX
  303 
  304 typedef union {
  305         LIST_ENTRY(ccb_hdr) le;
  306         SLIST_ENTRY(ccb_hdr) sle;
  307         TAILQ_ENTRY(ccb_hdr) tqe;
  308         STAILQ_ENTRY(ccb_hdr) stqe;
  309 } camq_entry;
  310 
  311 typedef union {
  312         void            *ptr;
  313         u_long          field;
  314         u_int8_t        bytes[sizeof(uintptr_t)];
  315 } ccb_priv_entry;
  316 
  317 typedef union {
  318         ccb_priv_entry  entries[CCB_PERIPH_PRIV_SIZE];
  319         u_int8_t        bytes[CCB_PERIPH_PRIV_SIZE * sizeof(ccb_priv_entry)];
  320 } ccb_ppriv_area;
  321 
  322 typedef union {
  323         ccb_priv_entry  entries[CCB_SIM_PRIV_SIZE];
  324         u_int8_t        bytes[CCB_SIM_PRIV_SIZE * sizeof(ccb_priv_entry)];
  325 } ccb_spriv_area;
  326 
  327 typedef struct {
  328         struct timeval  *etime;
  329         uintptr_t       sim_data;
  330         uintptr_t       periph_data;
  331 } ccb_qos_area;
  332 
  333 struct ccb_hdr {
  334         cam_pinfo       pinfo;          /* Info for priority scheduling */
  335         camq_entry      xpt_links;      /* For chaining in the XPT layer */     
  336         camq_entry      sim_links;      /* For chaining in the SIM layer */     
  337         camq_entry      periph_links;   /* For chaining in the type driver */
  338         u_int32_t       retry_count;
  339         void            (*cbfcnp)(struct cam_periph *, union ccb *);
  340                                         /* Callback on completion function */
  341         xpt_opcode      func_code;      /* XPT function code */
  342         u_int32_t       status;         /* Status returned by CAM subsystem */
  343         struct          cam_path *path; /* Compiled path for this ccb */
  344         path_id_t       path_id;        /* Path ID for the request */
  345         target_id_t     target_id;      /* Target device ID */
  346         lun_id_t        target_lun;     /* Target LUN number */
  347         u_int32_t       flags;          /* ccb_flags */
  348         u_int32_t       xflags;         /* Extended flags */
  349         ccb_ppriv_area  periph_priv;
  350         ccb_spriv_area  sim_priv;
  351         ccb_qos_area    qos;
  352         u_int32_t       timeout;        /* Hard timeout value in mseconds */
  353         struct timeval  softtimeout;    /* Soft timeout value in sec + usec */
  354 };
  355 
  356 /* Get Device Information CCB */
  357 struct ccb_getdev {
  358         struct    ccb_hdr ccb_h;
  359         cam_proto protocol;
  360         struct scsi_inquiry_data inq_data;
  361         struct ata_params ident_data;
  362         u_int8_t  serial_num[252];
  363         u_int8_t  inq_flags;
  364         u_int8_t  serial_num_len;
  365         void *padding[2];
  366 };
  367 
  368 /* Device Statistics CCB */
  369 struct ccb_getdevstats {
  370         struct  ccb_hdr ccb_h;
  371         int     dev_openings;   /* Space left for more work on device*/ 
  372         int     dev_active;     /* Transactions running on the device */
  373         int     allocated;      /* CCBs allocated for the device */
  374         int     queued;         /* CCBs queued to be sent to the device */
  375         int     held;           /*
  376                                  * CCBs held by peripheral drivers
  377                                  * for this device
  378                                  */
  379         int     maxtags;        /*
  380                                  * Boundary conditions for number of
  381                                  * tagged operations
  382                                  */
  383         int     mintags;
  384         struct  timeval last_reset;     /* Time of last bus reset/loop init */
  385 };
  386 
  387 typedef enum {
  388         CAM_GDEVLIST_LAST_DEVICE,
  389         CAM_GDEVLIST_LIST_CHANGED,
  390         CAM_GDEVLIST_MORE_DEVS,
  391         CAM_GDEVLIST_ERROR
  392 } ccb_getdevlist_status_e;
  393 
  394 struct ccb_getdevlist {
  395         struct ccb_hdr          ccb_h;
  396         char                    periph_name[DEV_IDLEN];
  397         u_int32_t               unit_number;
  398         unsigned int            generation;
  399         u_int32_t               index;
  400         ccb_getdevlist_status_e status;
  401 };
  402 
  403 typedef enum {
  404         PERIPH_MATCH_NONE       = 0x000,
  405         PERIPH_MATCH_PATH       = 0x001,
  406         PERIPH_MATCH_TARGET     = 0x002,
  407         PERIPH_MATCH_LUN        = 0x004,
  408         PERIPH_MATCH_NAME       = 0x008,
  409         PERIPH_MATCH_UNIT       = 0x010,
  410         PERIPH_MATCH_ANY        = 0x01f
  411 } periph_pattern_flags;
  412 
  413 struct periph_match_pattern {
  414         char                    periph_name[DEV_IDLEN];
  415         u_int32_t               unit_number;
  416         path_id_t               path_id;
  417         target_id_t             target_id;
  418         lun_id_t                target_lun;
  419         periph_pattern_flags    flags;
  420 };
  421 
  422 typedef enum {
  423         DEV_MATCH_NONE          = 0x000,
  424         DEV_MATCH_PATH          = 0x001,
  425         DEV_MATCH_TARGET        = 0x002,
  426         DEV_MATCH_LUN           = 0x004,
  427         DEV_MATCH_INQUIRY       = 0x008,
  428         DEV_MATCH_DEVID         = 0x010,
  429         DEV_MATCH_ANY           = 0x00f
  430 } dev_pattern_flags;
  431 
  432 struct device_id_match_pattern {
  433         uint8_t id_len;
  434         uint8_t id[256];
  435 };
  436 
  437 struct device_match_pattern {
  438         path_id_t                                       path_id;
  439         target_id_t                                     target_id;
  440         lun_id_t                                        target_lun;
  441         dev_pattern_flags                               flags;
  442         union {
  443                 struct scsi_static_inquiry_pattern      inq_pat;
  444                 struct device_id_match_pattern          devid_pat;
  445         } data; 
  446 };
  447 
  448 typedef enum {
  449         BUS_MATCH_NONE          = 0x000,
  450         BUS_MATCH_PATH          = 0x001,
  451         BUS_MATCH_NAME          = 0x002,
  452         BUS_MATCH_UNIT          = 0x004,
  453         BUS_MATCH_BUS_ID        = 0x008,
  454         BUS_MATCH_ANY           = 0x00f
  455 } bus_pattern_flags;
  456 
  457 struct bus_match_pattern {
  458         path_id_t               path_id;
  459         char                    dev_name[DEV_IDLEN];
  460         u_int32_t               unit_number;
  461         u_int32_t               bus_id;
  462         bus_pattern_flags       flags;
  463 };
  464 
  465 union match_pattern {
  466         struct periph_match_pattern     periph_pattern;
  467         struct device_match_pattern     device_pattern;
  468         struct bus_match_pattern        bus_pattern;
  469 };
  470 
  471 typedef enum {
  472         DEV_MATCH_PERIPH,
  473         DEV_MATCH_DEVICE,
  474         DEV_MATCH_BUS
  475 } dev_match_type;
  476 
  477 struct dev_match_pattern {
  478         dev_match_type          type;
  479         union match_pattern     pattern;
  480 };
  481 
  482 struct periph_match_result {
  483         char                    periph_name[DEV_IDLEN];
  484         u_int32_t               unit_number;
  485         path_id_t               path_id;
  486         target_id_t             target_id;
  487         lun_id_t                target_lun;
  488 };
  489 
  490 typedef enum {
  491         DEV_RESULT_NOFLAG               = 0x00,
  492         DEV_RESULT_UNCONFIGURED         = 0x01
  493 } dev_result_flags;
  494 
  495 struct device_match_result {
  496         path_id_t                       path_id;
  497         target_id_t                     target_id;
  498         lun_id_t                        target_lun;
  499         cam_proto                       protocol;
  500         struct scsi_inquiry_data        inq_data;
  501         struct ata_params               ident_data;
  502         dev_result_flags                flags;
  503 };
  504 
  505 struct bus_match_result {
  506         path_id_t       path_id;
  507         char            dev_name[DEV_IDLEN];
  508         u_int32_t       unit_number;
  509         u_int32_t       bus_id;
  510 };
  511 
  512 union match_result {
  513         struct periph_match_result      periph_result;
  514         struct device_match_result      device_result;
  515         struct bus_match_result         bus_result;
  516 };
  517 
  518 struct dev_match_result {
  519         dev_match_type          type;
  520         union match_result      result;
  521 };
  522 
  523 typedef enum {
  524         CAM_DEV_MATCH_LAST,
  525         CAM_DEV_MATCH_MORE,
  526         CAM_DEV_MATCH_LIST_CHANGED,
  527         CAM_DEV_MATCH_SIZE_ERROR,
  528         CAM_DEV_MATCH_ERROR
  529 } ccb_dev_match_status;
  530 
  531 typedef enum {
  532         CAM_DEV_POS_NONE        = 0x000,
  533         CAM_DEV_POS_BUS         = 0x001,
  534         CAM_DEV_POS_TARGET      = 0x002,
  535         CAM_DEV_POS_DEVICE      = 0x004,
  536         CAM_DEV_POS_PERIPH      = 0x008,
  537         CAM_DEV_POS_PDPTR       = 0x010,
  538         CAM_DEV_POS_TYPEMASK    = 0xf00,
  539         CAM_DEV_POS_EDT         = 0x100,
  540         CAM_DEV_POS_PDRV        = 0x200
  541 } dev_pos_type;
  542 
  543 struct ccb_dm_cookie {
  544         void    *bus;
  545         void    *target;        
  546         void    *device;
  547         void    *periph;
  548         void    *pdrv;
  549 };
  550 
  551 struct ccb_dev_position {
  552         u_int                   generations[4];
  553 #define CAM_BUS_GENERATION      0x00
  554 #define CAM_TARGET_GENERATION   0x01
  555 #define CAM_DEV_GENERATION      0x02
  556 #define CAM_PERIPH_GENERATION   0x03
  557         dev_pos_type            position_type;
  558         struct ccb_dm_cookie    cookie;
  559 };
  560 
  561 struct ccb_dev_match {
  562         struct ccb_hdr                  ccb_h;
  563         ccb_dev_match_status            status;
  564         u_int32_t                       num_patterns;
  565         u_int32_t                       pattern_buf_len;
  566         struct dev_match_pattern        *patterns;
  567         u_int32_t                       num_matches;
  568         u_int32_t                       match_buf_len;
  569         struct dev_match_result         *matches;
  570         struct ccb_dev_position         pos;
  571 };
  572 
  573 /*
  574  * Definitions for the path inquiry CCB fields.
  575  */
  576 #define CAM_VERSION     0x19    /* Hex value for current version */
  577 
  578 typedef enum {
  579         PI_MDP_ABLE     = 0x80, /* Supports MDP message */
  580         PI_WIDE_32      = 0x40, /* Supports 32 bit wide SCSI */
  581         PI_WIDE_16      = 0x20, /* Supports 16 bit wide SCSI */
  582         PI_SDTR_ABLE    = 0x10, /* Supports SDTR message */
  583         PI_LINKED_CDB   = 0x08, /* Supports linked CDBs */
  584         PI_SATAPM       = 0x04, /* Supports SATA PM */
  585         PI_TAG_ABLE     = 0x02, /* Supports tag queue messages */
  586         PI_SOFT_RST     = 0x01  /* Supports soft reset alternative */
  587 } pi_inqflag;
  588 
  589 typedef enum {
  590         PIT_PROCESSOR   = 0x80, /* Target mode processor mode */
  591         PIT_PHASE       = 0x40, /* Target mode phase cog. mode */
  592         PIT_DISCONNECT  = 0x20, /* Disconnects supported in target mode */
  593         PIT_TERM_IO     = 0x10, /* Terminate I/O message supported in TM */
  594         PIT_GRP_6       = 0x08, /* Group 6 commands supported */
  595         PIT_GRP_7       = 0x04  /* Group 7 commands supported */
  596 } pi_tmflag;
  597 
  598 typedef enum {
  599         PIM_ATA_EXT     = 0x200,/* ATA requests can understand ata_ext requests */
  600         PIM_EXTLUNS     = 0x100,/* 64bit extended LUNs supported */
  601         PIM_SCANHILO    = 0x80, /* Bus scans from high ID to low ID */
  602         PIM_NOREMOVE    = 0x40, /* Removeable devices not included in scan */
  603         PIM_NOINITIATOR = 0x20, /* Initiator role not supported. */
  604         PIM_NOBUSRESET  = 0x10, /* User has disabled initial BUS RESET */
  605         PIM_NO_6_BYTE   = 0x08, /* Do not send 6-byte commands */
  606         PIM_SEQSCAN     = 0x04, /* Do bus scans sequentially, not in parallel */
  607         PIM_UNMAPPED    = 0x02,
  608         PIM_NOSCAN      = 0x01  /* SIM does its own scanning */
  609 } pi_miscflag;
  610 
  611 /* Path Inquiry CCB */
  612 struct ccb_pathinq_settings_spi {
  613         u_int8_t ppr_options;
  614 };
  615 
  616 struct ccb_pathinq_settings_fc {
  617         u_int64_t wwnn;         /* world wide node name */
  618         u_int64_t wwpn;         /* world wide port name */
  619         u_int32_t port;         /* 24 bit port id, if known */
  620         u_int32_t bitrate;      /* Mbps */
  621 };
  622 
  623 struct ccb_pathinq_settings_sas {
  624         u_int32_t bitrate;      /* Mbps */
  625 };
  626 
  627 struct ccb_pathinq_settings_nvme {
  628         uint32_t nsid;          /* Namespace ID for this path */
  629         uint32_t domain;
  630         uint8_t  bus;
  631         uint8_t  slot;
  632         uint8_t  function;
  633         uint8_t  extra;
  634 };
  635 
  636 #define PATHINQ_SETTINGS_SIZE   128
  637 
  638 struct ccb_pathinq {
  639         struct      ccb_hdr ccb_h;
  640         u_int8_t    version_num;        /* Version number for the SIM/HBA */
  641         u_int8_t    hba_inquiry;        /* Mimic of INQ byte 7 for the HBA */
  642         u_int16_t   target_sprt;        /* Flags for target mode support */
  643         u_int32_t   hba_misc;           /* Misc HBA features */
  644         u_int16_t   hba_eng_cnt;        /* HBA engine count */
  645                                         /* Vendor Unique capabilities */
  646         u_int8_t    vuhba_flags[VUHBALEN];
  647         u_int32_t   max_target;         /* Maximum supported Target */
  648         u_int32_t   max_lun;            /* Maximum supported Lun */
  649         u_int32_t   async_flags;        /* Installed Async handlers */
  650         path_id_t   hpath_id;           /* Highest Path ID in the subsystem */
  651         target_id_t initiator_id;       /* ID of the HBA on the SCSI bus */
  652         char        sim_vid[SIM_IDLEN]; /* Vendor ID of the SIM */
  653         char        hba_vid[HBA_IDLEN]; /* Vendor ID of the HBA */
  654         char        dev_name[DEV_IDLEN];/* Device name for SIM */
  655         u_int32_t   unit_number;        /* Unit number for SIM */
  656         u_int32_t   bus_id;             /* Bus ID for SIM */
  657         u_int32_t   base_transfer_speed;/* Base bus speed in KB/sec */
  658         cam_proto   protocol;
  659         u_int       protocol_version;
  660         cam_xport   transport;
  661         u_int       transport_version;
  662         union {
  663                 struct ccb_pathinq_settings_spi spi;
  664                 struct ccb_pathinq_settings_fc fc;
  665                 struct ccb_pathinq_settings_sas sas;
  666                 struct ccb_pathinq_settings_nvme nvme;
  667                 char ccb_pathinq_settings_opaque[PATHINQ_SETTINGS_SIZE];
  668         } xport_specific;
  669         u_int           maxio;          /* Max supported I/O size, in bytes. */
  670         u_int16_t       hba_vendor;     /* HBA vendor ID */
  671         u_int16_t       hba_device;     /* HBA device ID */
  672         u_int16_t       hba_subvendor;  /* HBA subvendor ID */
  673         u_int16_t       hba_subdevice;  /* HBA subdevice ID */
  674 };
  675 
  676 /* Path Statistics CCB */
  677 struct ccb_pathstats {
  678         struct  ccb_hdr ccb_h;
  679         struct  timeval last_reset;     /* Time of last bus reset/loop init */
  680 };
  681 
  682 typedef enum {
  683         SMP_FLAG_NONE           = 0x00,
  684         SMP_FLAG_REQ_SG         = 0x01,
  685         SMP_FLAG_RSP_SG         = 0x02
  686 } ccb_smp_pass_flags;
  687 
  688 /*
  689  * Serial Management Protocol CCB
  690  * XXX Currently the semantics for this CCB are that it is executed either
  691  * by the addressed device, or that device's parent (i.e. an expander for
  692  * any device on an expander) if the addressed device doesn't support SMP.
  693  * Later, once we have the ability to probe SMP-only devices and put them
  694  * in CAM's topology, the CCB will only be executed by the addressed device
  695  * if possible.
  696  */
  697 struct ccb_smpio {
  698         struct ccb_hdr          ccb_h;
  699         uint8_t                 *smp_request;
  700         int                     smp_request_len;
  701         uint16_t                smp_request_sglist_cnt;
  702         uint8_t                 *smp_response;
  703         int                     smp_response_len;
  704         uint16_t                smp_response_sglist_cnt;
  705         ccb_smp_pass_flags      flags;
  706 };
  707 
  708 typedef union {
  709         u_int8_t *sense_ptr;            /*
  710                                          * Pointer to storage
  711                                          * for sense information
  712                                          */
  713                                         /* Storage Area for sense information */
  714         struct   scsi_sense_data sense_buf;
  715 } sense_t;
  716 
  717 typedef union {
  718         u_int8_t  *cdb_ptr;             /* Pointer to the CDB bytes to send */
  719                                         /* Area for the CDB send */
  720         u_int8_t  cdb_bytes[IOCDBLEN];
  721 } cdb_t;
  722 
  723 /*
  724  * SCSI I/O Request CCB used for the XPT_SCSI_IO and XPT_CONT_TARGET_IO
  725  * function codes.
  726  */
  727 struct ccb_scsiio {
  728         struct     ccb_hdr ccb_h;
  729         union      ccb *next_ccb;       /* Ptr for next CCB for action */
  730         u_int8_t   *req_map;            /* Ptr to mapping info */
  731         u_int8_t   *data_ptr;           /* Ptr to the data buf/SG list */
  732         u_int32_t  dxfer_len;           /* Data transfer length */
  733                                         /* Autosense storage */ 
  734         struct     scsi_sense_data sense_data;
  735         u_int8_t   sense_len;           /* Number of bytes to autosense */
  736         u_int8_t   cdb_len;             /* Number of bytes for the CDB */
  737         u_int16_t  sglist_cnt;          /* Number of SG list entries */
  738         u_int8_t   scsi_status;         /* Returned SCSI status */
  739         u_int8_t   sense_resid;         /* Autosense resid length: 2's comp */
  740         u_int32_t  resid;               /* Transfer residual length: 2's comp */
  741         cdb_t      cdb_io;              /* Union for CDB bytes/pointer */
  742         u_int8_t   *msg_ptr;            /* Pointer to the message buffer */
  743         u_int16_t  msg_len;             /* Number of bytes for the Message */
  744         u_int8_t   tag_action;          /* What to do for tag queueing */
  745         /*
  746          * The tag action should be either the define below (to send a
  747          * non-tagged transaction) or one of the defined scsi tag messages
  748          * from scsi_message.h.
  749          */
  750 #define         CAM_TAG_ACTION_NONE     0x00
  751         u_int      tag_id;              /* tag id from initator (target mode) */
  752         u_int      init_id;             /* initiator id of who selected */
  753 };
  754 
  755 static __inline uint8_t *
  756 scsiio_cdb_ptr(struct ccb_scsiio *ccb)
  757 {
  758         return ((ccb->ccb_h.flags & CAM_CDB_POINTER) ?
  759             ccb->cdb_io.cdb_ptr : ccb->cdb_io.cdb_bytes);
  760 }
  761 
  762 /*
  763  * ATA I/O Request CCB used for the XPT_ATA_IO function code.
  764  */
  765 struct ccb_ataio {
  766         struct     ccb_hdr ccb_h;
  767         union      ccb *next_ccb;       /* Ptr for next CCB for action */
  768         struct ata_cmd  cmd;            /* ATA command register set */
  769         struct ata_res  res;            /* ATA result register set */
  770         u_int8_t   *data_ptr;           /* Ptr to the data buf/SG list */
  771         u_int32_t  dxfer_len;           /* Data transfer length */
  772         u_int32_t  resid;               /* Transfer residual length: 2's comp */
  773         u_int8_t   ata_flags;           /* Flags for the rest of the buffer */
  774 #define ATA_FLAG_AUX 0x1
  775         uint32_t   aux;
  776         uint32_t   unused;
  777 };
  778 
  779 struct ccb_accept_tio {
  780         struct     ccb_hdr ccb_h;
  781         cdb_t      cdb_io;              /* Union for CDB bytes/pointer */
  782         u_int8_t   cdb_len;             /* Number of bytes for the CDB */
  783         u_int8_t   tag_action;          /* What to do for tag queueing */
  784         u_int8_t   sense_len;           /* Number of bytes of Sense Data */
  785         u_int      tag_id;              /* tag id from initator (target mode) */
  786         u_int      init_id;             /* initiator id of who selected */
  787         struct     scsi_sense_data sense_data;
  788 };
  789 
  790 static __inline uint8_t *
  791 atio_cdb_ptr(struct ccb_accept_tio *ccb)
  792 {
  793         return ((ccb->ccb_h.flags & CAM_CDB_POINTER) ?
  794             ccb->cdb_io.cdb_ptr : ccb->cdb_io.cdb_bytes);
  795 }
  796 
  797 /* Release SIM Queue */
  798 struct ccb_relsim {
  799         struct ccb_hdr ccb_h;
  800         u_int32_t      release_flags;
  801 #define RELSIM_ADJUST_OPENINGS          0x01
  802 #define RELSIM_RELEASE_AFTER_TIMEOUT    0x02
  803 #define RELSIM_RELEASE_AFTER_CMDCMPLT   0x04
  804 #define RELSIM_RELEASE_AFTER_QEMPTY     0x08
  805         u_int32_t      openings;
  806         u_int32_t      release_timeout; /* Abstract argument. */
  807         u_int32_t      qfrozen_cnt;
  808 };
  809 
  810 /*
  811  * NVMe I/O Request CCB used for the XPT_NVME_IO and XPT_NVME_ADMIN function codes.
  812  */
  813 struct ccb_nvmeio {
  814         struct     ccb_hdr ccb_h;
  815         union      ccb *next_ccb;       /* Ptr for next CCB for action */
  816         struct nvme_command cmd;        /* NVME command, per NVME standard */
  817         struct nvme_completion cpl;     /* NVME completion, per NVME standard */
  818         uint8_t   *data_ptr;            /* Ptr to the data buf/SG list */
  819         uint32_t  dxfer_len;            /* Data transfer length */
  820         uint16_t  sglist_cnt;           /* Number of SG list entries */
  821         uint16_t  unused;               /* padding for removed uint32_t */
  822 };
  823 
  824 /*
  825  * Definitions for the asynchronous callback CCB fields.
  826  */
  827 typedef enum {
  828         AC_UNIT_ATTENTION       = 0x4000,/* Device reported UNIT ATTENTION */
  829         AC_ADVINFO_CHANGED      = 0x2000,/* Advance info might have changes */
  830         AC_CONTRACT             = 0x1000,/* A contractual callback */
  831         AC_GETDEV_CHANGED       = 0x800,/* Getdev info might have changed */
  832         AC_INQ_CHANGED          = 0x400,/* Inquiry info might have changed */
  833         AC_TRANSFER_NEG         = 0x200,/* New transfer settings in effect */
  834         AC_LOST_DEVICE          = 0x100,/* A device went away */
  835         AC_FOUND_DEVICE         = 0x080,/* A new device was found */
  836         AC_PATH_DEREGISTERED    = 0x040,/* A path has de-registered */
  837         AC_PATH_REGISTERED      = 0x020,/* A new path has been registered */
  838         AC_SENT_BDR             = 0x010,/* A BDR message was sent to target */
  839         AC_SCSI_AEN             = 0x008,/* A SCSI AEN has been received */
  840         AC_UNSOL_RESEL          = 0x002,/* Unsolicited reselection occurred */
  841         AC_BUS_RESET            = 0x001 /* A SCSI bus reset occurred */
  842 } ac_code;
  843 
  844 typedef void ac_callback_t (void *softc, u_int32_t code,
  845                             struct cam_path *path, void *args);
  846 
  847 /*
  848  * Generic Asynchronous callbacks.
  849  *
  850  * Generic arguments passed bac which are then interpreted between a per-system
  851  * contract number.
  852  */
  853 #define AC_CONTRACT_DATA_MAX (128 - sizeof (u_int64_t))
  854 struct ac_contract {
  855         u_int64_t       contract_number;
  856         u_int8_t        contract_data[AC_CONTRACT_DATA_MAX];
  857 };
  858 
  859 #define AC_CONTRACT_DEV_CHG     1
  860 struct ac_device_changed {
  861         u_int64_t       wwpn;
  862         u_int32_t       port;
  863         target_id_t     target;
  864         u_int8_t        arrived;
  865 };
  866 
  867 /* Set Asynchronous Callback CCB */
  868 struct ccb_setasync {
  869         struct ccb_hdr   ccb_h;
  870         u_int32_t        event_enable;  /* Async Event enables */       
  871         ac_callback_t   *callback;
  872         void            *callback_arg;
  873 };
  874 
  875 /* Set Device Type CCB */
  876 struct ccb_setdev {
  877         struct     ccb_hdr ccb_h;
  878         u_int8_t   dev_type;    /* Value for dev type field in EDT */
  879 };
  880 
  881 /* SCSI Control Functions */
  882 
  883 /* Abort XPT request CCB */
  884 struct ccb_abort {
  885         struct  ccb_hdr ccb_h;
  886         union   ccb *abort_ccb; /* Pointer to CCB to abort */
  887 };
  888 
  889 /* Reset SCSI Bus CCB */
  890 struct ccb_resetbus {
  891         struct  ccb_hdr ccb_h;
  892 };
  893 
  894 /* Reset SCSI Device CCB */
  895 struct ccb_resetdev {
  896         struct  ccb_hdr ccb_h;
  897 };
  898 
  899 /* Terminate I/O Process Request CCB */
  900 struct ccb_termio {
  901         struct  ccb_hdr ccb_h;
  902         union   ccb *termio_ccb;        /* Pointer to CCB to terminate */
  903 };
  904 
  905 typedef enum {
  906         CTS_TYPE_CURRENT_SETTINGS,
  907         CTS_TYPE_USER_SETTINGS
  908 } cts_type;
  909 
  910 struct ccb_trans_settings_scsi
  911 {
  912         u_int   valid;  /* Which fields to honor */
  913 #define CTS_SCSI_VALID_TQ               0x01
  914         u_int   flags;
  915 #define CTS_SCSI_FLAGS_TAG_ENB          0x01
  916 };
  917 
  918 struct ccb_trans_settings_ata
  919 {
  920         u_int   valid;  /* Which fields to honor */
  921 #define CTS_ATA_VALID_TQ                0x01
  922         u_int   flags;
  923 #define CTS_ATA_FLAGS_TAG_ENB           0x01
  924 };
  925 
  926 struct ccb_trans_settings_spi
  927 {
  928         u_int     valid;        /* Which fields to honor */
  929 #define CTS_SPI_VALID_SYNC_RATE         0x01
  930 #define CTS_SPI_VALID_SYNC_OFFSET       0x02
  931 #define CTS_SPI_VALID_BUS_WIDTH         0x04
  932 #define CTS_SPI_VALID_DISC              0x08
  933 #define CTS_SPI_VALID_PPR_OPTIONS       0x10
  934         u_int   flags;
  935 #define CTS_SPI_FLAGS_DISC_ENB          0x01
  936         u_int   sync_period;
  937         u_int   sync_offset;
  938         u_int   bus_width;
  939         u_int   ppr_options;
  940 };
  941 
  942 struct ccb_trans_settings_fc {
  943         u_int           valid;          /* Which fields to honor */
  944 #define CTS_FC_VALID_WWNN               0x8000
  945 #define CTS_FC_VALID_WWPN               0x4000
  946 #define CTS_FC_VALID_PORT               0x2000
  947 #define CTS_FC_VALID_SPEED              0x1000
  948         u_int64_t       wwnn;           /* world wide node name */
  949         u_int64_t       wwpn;           /* world wide port name */
  950         u_int32_t       port;           /* 24 bit port id, if known */
  951         u_int32_t       bitrate;        /* Mbps */
  952 };
  953 
  954 struct ccb_trans_settings_sas {
  955         u_int           valid;          /* Which fields to honor */
  956 #define CTS_SAS_VALID_SPEED             0x1000
  957         u_int32_t       bitrate;        /* Mbps */
  958 };
  959 
  960 struct ccb_trans_settings_pata {
  961         u_int           valid;          /* Which fields to honor */
  962 #define CTS_ATA_VALID_MODE              0x01
  963 #define CTS_ATA_VALID_BYTECOUNT         0x02
  964 #define CTS_ATA_VALID_ATAPI             0x20
  965 #define CTS_ATA_VALID_CAPS              0x40
  966         int             mode;           /* Mode */
  967         u_int           bytecount;      /* Length of PIO transaction */
  968         u_int           atapi;          /* Length of ATAPI CDB */
  969         u_int           caps;           /* Device and host SATA caps. */
  970 #define CTS_ATA_CAPS_H                  0x0000ffff
  971 #define CTS_ATA_CAPS_H_DMA48            0x00000001 /* 48-bit DMA */
  972 #define CTS_ATA_CAPS_D                  0xffff0000
  973 };
  974 
  975 struct ccb_trans_settings_sata {
  976         u_int           valid;          /* Which fields to honor */
  977 #define CTS_SATA_VALID_MODE             0x01
  978 #define CTS_SATA_VALID_BYTECOUNT        0x02
  979 #define CTS_SATA_VALID_REVISION         0x04
  980 #define CTS_SATA_VALID_PM               0x08
  981 #define CTS_SATA_VALID_TAGS             0x10
  982 #define CTS_SATA_VALID_ATAPI            0x20
  983 #define CTS_SATA_VALID_CAPS             0x40
  984         int             mode;           /* Legacy PATA mode */
  985         u_int           bytecount;      /* Length of PIO transaction */
  986         int             revision;       /* SATA revision */
  987         u_int           pm_present;     /* PM is present (XPT->SIM) */
  988         u_int           tags;           /* Number of allowed tags */
  989         u_int           atapi;          /* Length of ATAPI CDB */
  990         u_int           caps;           /* Device and host SATA caps. */
  991 #define CTS_SATA_CAPS_H                 0x0000ffff
  992 #define CTS_SATA_CAPS_H_PMREQ           0x00000001
  993 #define CTS_SATA_CAPS_H_APST            0x00000002
  994 #define CTS_SATA_CAPS_H_DMAAA           0x00000010 /* Auto-activation */
  995 #define CTS_SATA_CAPS_H_AN              0x00000020 /* Async. notification */
  996 #define CTS_SATA_CAPS_D                 0xffff0000
  997 #define CTS_SATA_CAPS_D_PMREQ           0x00010000
  998 #define CTS_SATA_CAPS_D_APST            0x00020000
  999 };
 1000 
 1001 struct ccb_trans_settings_nvme 
 1002 {
 1003         u_int           valid;          /* Which fields to honor */
 1004 #define CTS_NVME_VALID_SPEC     0x01
 1005 #define CTS_NVME_VALID_CAPS     0x02
 1006         u_int           spec_major;     /* Major version of spec supported */
 1007         u_int           spec_minor;     /* Minor verison of spec supported */
 1008         u_int           spec_tiny;      /* Tiny version of spec supported */
 1009         u_int           max_xfer;       /* Max transfer size (0 -> unlimited */
 1010         u_int           caps;
 1011 };
 1012         
 1013 /* Get/Set transfer rate/width/disconnection/tag queueing settings */
 1014 struct ccb_trans_settings {
 1015         struct    ccb_hdr ccb_h;
 1016         cts_type  type;         /* Current or User settings */
 1017         cam_proto protocol;
 1018         u_int     protocol_version;
 1019         cam_xport transport;
 1020         u_int     transport_version;
 1021         union {
 1022                 u_int  valid;   /* Which fields to honor */
 1023                 struct ccb_trans_settings_ata ata;
 1024                 struct ccb_trans_settings_scsi scsi;
 1025                 struct ccb_trans_settings_nvme nvme;
 1026         } proto_specific;
 1027         union {
 1028                 u_int  valid;   /* Which fields to honor */
 1029                 struct ccb_trans_settings_spi spi;
 1030                 struct ccb_trans_settings_fc fc;
 1031                 struct ccb_trans_settings_sas sas;
 1032                 struct ccb_trans_settings_pata ata;
 1033                 struct ccb_trans_settings_sata sata;
 1034                 struct ccb_trans_settings_nvme nvme;
 1035         } xport_specific;
 1036 };
 1037 
 1038 
 1039 /*
 1040  * Calculate the geometry parameters for a device
 1041  * give the block size and volume size in blocks.
 1042  */
 1043 struct ccb_calc_geometry {
 1044         struct    ccb_hdr ccb_h;
 1045         u_int32_t block_size;
 1046         u_int64_t volume_size;
 1047         u_int32_t cylinders;            
 1048         u_int8_t  heads;
 1049         u_int8_t  secs_per_track;
 1050 };
 1051 
 1052 /*
 1053  * Set or get SIM (and transport) specific knobs
 1054  */
 1055 
 1056 #define KNOB_VALID_ADDRESS      0x1
 1057 #define KNOB_VALID_ROLE         0x2
 1058 
 1059 
 1060 #define KNOB_ROLE_NONE          0x0
 1061 #define KNOB_ROLE_INITIATOR     0x1
 1062 #define KNOB_ROLE_TARGET        0x2
 1063 #define KNOB_ROLE_BOTH          0x3
 1064 
 1065 struct ccb_sim_knob_settings_spi {
 1066         u_int           valid;
 1067         u_int           initiator_id;
 1068         u_int           role;
 1069 };
 1070 
 1071 struct ccb_sim_knob_settings_fc {
 1072         u_int           valid;
 1073         u_int64_t       wwnn;           /* world wide node name */
 1074         u_int64_t       wwpn;           /* world wide port name */
 1075         u_int           role;
 1076 };
 1077 
 1078 struct ccb_sim_knob_settings_sas {
 1079         u_int           valid;
 1080         u_int64_t       wwnn;           /* world wide node name */
 1081         u_int           role;
 1082 };
 1083 #define KNOB_SETTINGS_SIZE      128
 1084 
 1085 struct ccb_sim_knob {
 1086         struct    ccb_hdr ccb_h;
 1087         union {
 1088                 u_int  valid;   /* Which fields to honor */
 1089                 struct ccb_sim_knob_settings_spi spi;
 1090                 struct ccb_sim_knob_settings_fc fc;
 1091                 struct ccb_sim_knob_settings_sas sas;
 1092                 char pad[KNOB_SETTINGS_SIZE];
 1093         } xport_specific;
 1094 };
 1095 
 1096 /*
 1097  * Rescan the given bus, or bus/target/lun
 1098  */
 1099 struct ccb_rescan {
 1100         struct  ccb_hdr ccb_h;
 1101         cam_flags       flags;
 1102 };
 1103 
 1104 /*
 1105  * Turn on debugging for the given bus, bus/target, or bus/target/lun.
 1106  */
 1107 struct ccb_debug {
 1108         struct  ccb_hdr ccb_h;
 1109         cam_debug_flags flags;
 1110 };
 1111 
 1112 /* Target mode structures. */
 1113 
 1114 struct ccb_en_lun {
 1115         struct    ccb_hdr ccb_h;
 1116         u_int16_t grp6_len;             /* Group 6 VU CDB length */
 1117         u_int16_t grp7_len;             /* Group 7 VU CDB length */
 1118         u_int8_t  enable;
 1119 };
 1120 
 1121 /* old, barely used immediate notify, binary compatibility */
 1122 struct ccb_immed_notify {
 1123         struct    ccb_hdr ccb_h;
 1124         struct    scsi_sense_data sense_data;
 1125         u_int8_t  sense_len;            /* Number of bytes in sense buffer */
 1126         u_int8_t  initiator_id;         /* Id of initiator that selected */
 1127         u_int8_t  message_args[7];      /* Message Arguments */
 1128 };
 1129 
 1130 struct ccb_notify_ack {
 1131         struct    ccb_hdr ccb_h;
 1132         u_int16_t seq_id;               /* Sequence identifier */
 1133         u_int8_t  event;                /* Event flags */
 1134 };
 1135 
 1136 struct ccb_immediate_notify {
 1137         struct    ccb_hdr ccb_h;
 1138         u_int     tag_id;               /* Tag for immediate notify */
 1139         u_int     seq_id;               /* Tag for target of notify */
 1140         u_int     initiator_id;         /* Initiator Identifier */
 1141         u_int     arg;                  /* Function specific */
 1142 };
 1143 
 1144 struct ccb_notify_acknowledge {
 1145         struct    ccb_hdr ccb_h;
 1146         u_int     tag_id;               /* Tag for immediate notify */
 1147         u_int     seq_id;               /* Tar for target of notify */
 1148         u_int     initiator_id;         /* Initiator Identifier */
 1149         u_int     arg;                  /* Response information */
 1150         /*
 1151          * Lower byte of arg is one of RESPONSE CODE values defined below
 1152          * (subset of response codes from SPL-4 and FCP-4 specifications),
 1153          * upper 3 bytes is code-specific ADDITIONAL RESPONSE INFORMATION.
 1154          */
 1155 #define CAM_RSP_TMF_COMPLETE            0x00
 1156 #define CAM_RSP_TMF_REJECTED            0x04
 1157 #define CAM_RSP_TMF_FAILED              0x05
 1158 #define CAM_RSP_TMF_SUCCEEDED           0x08
 1159 #define CAM_RSP_TMF_INCORRECT_LUN       0x09
 1160 };
 1161 
 1162 /* HBA engine structures. */
 1163 
 1164 typedef enum {
 1165         EIT_BUFFER,     /* Engine type: buffer memory */
 1166         EIT_LOSSLESS,   /* Engine type: lossless compression */
 1167         EIT_LOSSY,      /* Engine type: lossy compression */
 1168         EIT_ENCRYPT     /* Engine type: encryption */
 1169 } ei_type;
 1170 
 1171 typedef enum {
 1172         EAD_VUNIQUE,    /* Engine algorithm ID: vendor unique */
 1173         EAD_LZ1V1,      /* Engine algorithm ID: LZ1 var.1 */
 1174         EAD_LZ2V1,      /* Engine algorithm ID: LZ2 var.1 */
 1175         EAD_LZ2V2       /* Engine algorithm ID: LZ2 var.2 */
 1176 } ei_algo;
 1177 
 1178 struct ccb_eng_inq {
 1179         struct    ccb_hdr ccb_h;
 1180         u_int16_t eng_num;      /* The engine number for this inquiry */
 1181         ei_type   eng_type;     /* Returned engine type */
 1182         ei_algo   eng_algo;     /* Returned engine algorithm type */
 1183         u_int32_t eng_memeory;  /* Returned engine memory size */
 1184 };
 1185 
 1186 struct ccb_eng_exec {   /* This structure must match SCSIIO size */
 1187         struct    ccb_hdr ccb_h;
 1188         u_int8_t  *pdrv_ptr;    /* Ptr used by the peripheral driver */
 1189         u_int8_t  *req_map;     /* Ptr for mapping info on the req. */
 1190         u_int8_t  *data_ptr;    /* Pointer to the data buf/SG list */
 1191         u_int32_t dxfer_len;    /* Data transfer length */
 1192         u_int8_t  *engdata_ptr; /* Pointer to the engine buffer data */
 1193         u_int16_t sglist_cnt;   /* Num of scatter gather list entries */
 1194         u_int32_t dmax_len;     /* Destination data maximum length */
 1195         u_int32_t dest_len;     /* Destination data length */
 1196         int32_t   src_resid;    /* Source residual length: 2's comp */
 1197         u_int32_t timeout;      /* Timeout value */
 1198         u_int16_t eng_num;      /* Engine number for this request */
 1199         u_int16_t vu_flags;     /* Vendor Unique flags */
 1200 };
 1201 
 1202 /*
 1203  * Definitions for the timeout field in the SCSI I/O CCB.
 1204  */
 1205 #define CAM_TIME_DEFAULT        0x00000000      /* Use SIM default value */
 1206 #define CAM_TIME_INFINITY       0xFFFFFFFF      /* Infinite timeout */
 1207 
 1208 #define CAM_SUCCESS     0       /* For signaling general success */
 1209 #define CAM_FAILURE     1       /* For signaling general failure */
 1210 
 1211 #define CAM_FALSE       0
 1212 #define CAM_TRUE        1
 1213 
 1214 #define XPT_CCB_INVALID -1      /* for signaling a bad CCB to free */
 1215 
 1216 /*
 1217  * CCB for working with advanced device information.  This operates in a fashion
 1218  * similar to XPT_GDEV_TYPE.  Specify the target in ccb_h, the buffer
 1219  * type requested, and provide a buffer size/buffer to write to.  If the
 1220  * buffer is too small, provsiz will be larger than bufsiz.
 1221  */
 1222 struct ccb_dev_advinfo {
 1223         struct ccb_hdr ccb_h;
 1224         uint32_t flags;
 1225 #define CDAI_FLAG_NONE          0x0     /* No flags set */
 1226 #define CDAI_FLAG_STORE         0x1     /* If set, action becomes store */
 1227         uint32_t buftype;               /* IN: Type of data being requested */
 1228         /* NB: buftype is interpreted on a per-transport basis */
 1229 #define CDAI_TYPE_SCSI_DEVID    1
 1230 #define CDAI_TYPE_SERIAL_NUM    2
 1231 #define CDAI_TYPE_PHYS_PATH     3
 1232 #define CDAI_TYPE_RCAPLONG      4
 1233 #define CDAI_TYPE_EXT_INQ       5
 1234 #define CDAI_TYPE_NVME_CNTRL    6       /* NVMe Identify Controller data */
 1235 #define CDAI_TYPE_NVME_NS       7       /* NVMe Identify Namespace data */
 1236         off_t bufsiz;                   /* IN: Size of external buffer */
 1237 #define CAM_SCSI_DEVID_MAXLEN   65536   /* length in buffer is an uint16_t */
 1238         off_t provsiz;                  /* OUT: Size required/used */
 1239         uint8_t *buf;                   /* IN/OUT: Buffer for requested data */
 1240 };
 1241 
 1242 /*
 1243  * CCB for sending async events
 1244  */
 1245 struct ccb_async {
 1246         struct ccb_hdr ccb_h;
 1247         uint32_t async_code;
 1248         off_t async_arg_size;
 1249         void *async_arg_ptr;
 1250 };
 1251 
 1252 /*
 1253  * Union of all CCB types for kernel space allocation.  This union should
 1254  * never be used for manipulating CCBs - its only use is for the allocation
 1255  * and deallocation of raw CCB space and is the return type of xpt_ccb_alloc
 1256  * and the argument to xpt_ccb_free.
 1257  */
 1258 union ccb {
 1259         struct  ccb_hdr                 ccb_h;  /* For convenience */
 1260         struct  ccb_scsiio              csio;
 1261         struct  ccb_getdev              cgd;
 1262         struct  ccb_getdevlist          cgdl;
 1263         struct  ccb_pathinq             cpi;
 1264         struct  ccb_relsim              crs;
 1265         struct  ccb_setasync            csa;
 1266         struct  ccb_setdev              csd;
 1267         struct  ccb_pathstats           cpis;
 1268         struct  ccb_getdevstats         cgds;
 1269         struct  ccb_dev_match           cdm;
 1270         struct  ccb_trans_settings      cts;
 1271         struct  ccb_calc_geometry       ccg;    
 1272         struct  ccb_sim_knob            knob;   
 1273         struct  ccb_abort               cab;
 1274         struct  ccb_resetbus            crb;
 1275         struct  ccb_resetdev            crd;
 1276         struct  ccb_termio              tio;
 1277         struct  ccb_accept_tio          atio;
 1278         struct  ccb_scsiio              ctio;
 1279         struct  ccb_en_lun              cel;
 1280         struct  ccb_immed_notify        cin;
 1281         struct  ccb_notify_ack          cna;
 1282         struct  ccb_immediate_notify    cin1;
 1283         struct  ccb_notify_acknowledge  cna2;
 1284         struct  ccb_eng_inq             cei;
 1285         struct  ccb_eng_exec            cee;
 1286         struct  ccb_smpio               smpio;
 1287         struct  ccb_rescan              crcn;
 1288         struct  ccb_debug               cdbg;
 1289         struct  ccb_ataio               ataio;
 1290         struct  ccb_dev_advinfo         cdai;
 1291         struct  ccb_async               casync;
 1292         struct  ccb_nvmeio              nvmeio;
 1293 };
 1294 
 1295 #define CCB_CLEAR_ALL_EXCEPT_HDR(ccbp)                  \
 1296         bzero((char *)(ccbp) + sizeof((ccbp)->ccb_h),   \
 1297             sizeof(*(ccbp)) - sizeof((ccbp)->ccb_h))
 1298 
 1299 __BEGIN_DECLS
 1300 static __inline void
 1301 cam_fill_csio(struct ccb_scsiio *csio, u_int32_t retries,
 1302               void (*cbfcnp)(struct cam_periph *, union ccb *),
 1303               u_int32_t flags, u_int8_t tag_action,
 1304               u_int8_t *data_ptr, u_int32_t dxfer_len,
 1305               u_int8_t sense_len, u_int8_t cdb_len,
 1306               u_int32_t timeout);
 1307 
 1308 static __inline void
 1309 cam_fill_nvmeio(struct ccb_nvmeio *nvmeio, u_int32_t retries,
 1310               void (*cbfcnp)(struct cam_periph *, union ccb *),
 1311               u_int32_t flags, u_int8_t *data_ptr, u_int32_t dxfer_len,
 1312               u_int32_t timeout);
 1313 
 1314 static __inline void
 1315 cam_fill_ctio(struct ccb_scsiio *csio, u_int32_t retries,
 1316               void (*cbfcnp)(struct cam_periph *, union ccb *),
 1317               u_int32_t flags, u_int tag_action, u_int tag_id,
 1318               u_int init_id, u_int scsi_status, u_int8_t *data_ptr,
 1319               u_int32_t dxfer_len, u_int32_t timeout);
 1320 
 1321 static __inline void
 1322 cam_fill_ataio(struct ccb_ataio *ataio, u_int32_t retries,
 1323               void (*cbfcnp)(struct cam_periph *, union ccb *),
 1324               u_int32_t flags, u_int tag_action,
 1325               u_int8_t *data_ptr, u_int32_t dxfer_len,
 1326               u_int32_t timeout);
 1327 
 1328 static __inline void
 1329 cam_fill_smpio(struct ccb_smpio *smpio, uint32_t retries, 
 1330                void (*cbfcnp)(struct cam_periph *, union ccb *), uint32_t flags,
 1331                uint8_t *smp_request, int smp_request_len,
 1332                uint8_t *smp_response, int smp_response_len,
 1333                uint32_t timeout);
 1334 
 1335 static __inline void
 1336 cam_fill_csio(struct ccb_scsiio *csio, u_int32_t retries,
 1337               void (*cbfcnp)(struct cam_periph *, union ccb *),
 1338               u_int32_t flags, u_int8_t tag_action,
 1339               u_int8_t *data_ptr, u_int32_t dxfer_len,
 1340               u_int8_t sense_len, u_int8_t cdb_len,
 1341               u_int32_t timeout)
 1342 {
 1343         csio->ccb_h.func_code = XPT_SCSI_IO;
 1344         csio->ccb_h.flags = flags;
 1345         csio->ccb_h.xflags = 0;
 1346         csio->ccb_h.retry_count = retries;      
 1347         csio->ccb_h.cbfcnp = cbfcnp;
 1348         csio->ccb_h.timeout = timeout;
 1349         csio->data_ptr = data_ptr;
 1350         csio->dxfer_len = dxfer_len;
 1351         csio->sense_len = sense_len;
 1352         csio->cdb_len = cdb_len;
 1353         csio->tag_action = tag_action;
 1354 }
 1355 
 1356 static __inline void
 1357 cam_fill_ctio(struct ccb_scsiio *csio, u_int32_t retries,
 1358               void (*cbfcnp)(struct cam_periph *, union ccb *),
 1359               u_int32_t flags, u_int tag_action, u_int tag_id,
 1360               u_int init_id, u_int scsi_status, u_int8_t *data_ptr,
 1361               u_int32_t dxfer_len, u_int32_t timeout)
 1362 {
 1363         csio->ccb_h.func_code = XPT_CONT_TARGET_IO;
 1364         csio->ccb_h.flags = flags;
 1365         csio->ccb_h.xflags = 0;
 1366         csio->ccb_h.retry_count = retries;      
 1367         csio->ccb_h.cbfcnp = cbfcnp;
 1368         csio->ccb_h.timeout = timeout;
 1369         csio->data_ptr = data_ptr;
 1370         csio->dxfer_len = dxfer_len;
 1371         csio->scsi_status = scsi_status;
 1372         csio->tag_action = tag_action;
 1373         csio->tag_id = tag_id;
 1374         csio->init_id = init_id;
 1375 }
 1376 
 1377 static __inline void
 1378 cam_fill_ataio(struct ccb_ataio *ataio, u_int32_t retries,
 1379               void (*cbfcnp)(struct cam_periph *, union ccb *),
 1380               u_int32_t flags, u_int tag_action __unused,
 1381               u_int8_t *data_ptr, u_int32_t dxfer_len,
 1382               u_int32_t timeout)
 1383 {
 1384         ataio->ccb_h.func_code = XPT_ATA_IO;
 1385         ataio->ccb_h.flags = flags;
 1386         ataio->ccb_h.retry_count = retries;
 1387         ataio->ccb_h.cbfcnp = cbfcnp;
 1388         ataio->ccb_h.timeout = timeout;
 1389         ataio->data_ptr = data_ptr;
 1390         ataio->dxfer_len = dxfer_len;
 1391         ataio->ata_flags = 0;
 1392 }
 1393 
 1394 static __inline void
 1395 cam_fill_smpio(struct ccb_smpio *smpio, uint32_t retries, 
 1396                void (*cbfcnp)(struct cam_periph *, union ccb *), uint32_t flags,
 1397                uint8_t *smp_request, int smp_request_len,
 1398                uint8_t *smp_response, int smp_response_len,
 1399                uint32_t timeout)
 1400 {
 1401 #ifdef _KERNEL
 1402         KASSERT((flags & CAM_DIR_MASK) == CAM_DIR_BOTH,
 1403                 ("direction != CAM_DIR_BOTH"));
 1404         KASSERT((smp_request != NULL) && (smp_response != NULL),
 1405                 ("need valid request and response buffers"));
 1406         KASSERT((smp_request_len != 0) && (smp_response_len != 0),
 1407                 ("need non-zero request and response lengths"));
 1408 #endif /*_KERNEL*/
 1409         smpio->ccb_h.func_code = XPT_SMP_IO;
 1410         smpio->ccb_h.flags = flags;
 1411         smpio->ccb_h.retry_count = retries;
 1412         smpio->ccb_h.cbfcnp = cbfcnp;
 1413         smpio->ccb_h.timeout = timeout;
 1414         smpio->smp_request = smp_request;
 1415         smpio->smp_request_len = smp_request_len;
 1416         smpio->smp_response = smp_response;
 1417         smpio->smp_response_len = smp_response_len;
 1418 }
 1419 
 1420 static __inline void
 1421 cam_set_ccbstatus(union ccb *ccb, cam_status status)
 1422 {
 1423         ccb->ccb_h.status &= ~CAM_STATUS_MASK;
 1424         ccb->ccb_h.status |= status;
 1425 }
 1426 
 1427 static __inline cam_status
 1428 cam_ccb_status(union ccb *ccb)
 1429 {
 1430         return ((cam_status)(ccb->ccb_h.status & CAM_STATUS_MASK));
 1431 }
 1432 
 1433 void cam_calc_geometry(struct ccb_calc_geometry *ccg, int extended);
 1434 
 1435 static __inline void
 1436 cam_fill_nvmeio(struct ccb_nvmeio *nvmeio, u_int32_t retries,
 1437               void (*cbfcnp)(struct cam_periph *, union ccb *),
 1438               u_int32_t flags, u_int8_t *data_ptr, u_int32_t dxfer_len,
 1439               u_int32_t timeout)
 1440 {
 1441         nvmeio->ccb_h.func_code = XPT_NVME_IO;
 1442         nvmeio->ccb_h.flags = flags;
 1443         nvmeio->ccb_h.retry_count = retries;
 1444         nvmeio->ccb_h.cbfcnp = cbfcnp;
 1445         nvmeio->ccb_h.timeout = timeout;
 1446         nvmeio->data_ptr = data_ptr;
 1447         nvmeio->dxfer_len = dxfer_len;
 1448 }
 1449 
 1450 static __inline void
 1451 cam_fill_nvmeadmin(struct ccb_nvmeio *nvmeio, u_int32_t retries,
 1452               void (*cbfcnp)(struct cam_periph *, union ccb *),
 1453               u_int32_t flags, u_int8_t *data_ptr, u_int32_t dxfer_len,
 1454               u_int32_t timeout)
 1455 {
 1456         nvmeio->ccb_h.func_code = XPT_NVME_ADMIN;
 1457         nvmeio->ccb_h.flags = flags;
 1458         nvmeio->ccb_h.retry_count = retries;
 1459         nvmeio->ccb_h.cbfcnp = cbfcnp;
 1460         nvmeio->ccb_h.timeout = timeout;
 1461         nvmeio->data_ptr = data_ptr;
 1462         nvmeio->dxfer_len = dxfer_len;
 1463 }
 1464 __END_DECLS
 1465 
 1466 #endif /* _CAM_CAM_CCB_H */

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