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

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    1 /*-
    2  * CAM ioctl compatibility shims
    3  *
    4  * Copyright (c) 2013 Scott Long
    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_compat.h 307264 2016-10-14 06:56:06Z mav $
   29  */
   30 
   31 #ifndef _CAM_CAM_COMPAT_H
   32 #define _CAM_CAM_COMPAT_H
   33 
   34 /* No user-servicable parts in here. */
   35 #ifdef _KERNEL
   36 
   37 int cam_compat_ioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag,
   38     struct thread *td, int(*cbfnp)(struct cdev *, u_long, caddr_t, int,
   39     struct thread *));
   40 
   41 
   42 /* Version 0x16 compatibility */
   43 #define CAM_VERSION_0x16        0x16
   44 
   45 /* The size of the union ccb didn't change when going to 0x17 */
   46 #define CAMIOCOMMAND_0x16       _IOC(IOC_INOUT, CAM_VERSION_0x16, 2, CAM_0X17_LEN)
   47 #define CAMGETPASSTHRU_0x16     _IOC(IOC_INOUT, CAM_VERSION_0x16, 3, CAM_0X17_LEN)
   48 
   49 #define CAM_SCATTER_VALID_0x16  0x00000010
   50 #define CAM_SG_LIST_PHYS_0x16   0x00040000
   51 #define CAM_DATA_PHYS_0x16      0x00200000
   52 
   53 /* Version 0x17 compatibility */
   54 #define CAM_VERSION_0x17        0x17
   55 
   56 struct ccb_hdr_0x17 {
   57         cam_pinfo       pinfo;          /* Info for priority scheduling */
   58         camq_entry      xpt_links;      /* For chaining in the XPT layer */     
   59         camq_entry      sim_links;      /* For chaining in the SIM layer */     
   60         camq_entry      periph_links;   /* For chaining in the type driver */
   61         u_int32_t       retry_count;
   62         void            (*cbfcnp)(struct cam_periph *, union ccb *);
   63         xpt_opcode      func_code;      /* XPT function code */
   64         u_int32_t       status;         /* Status returned by CAM subsystem */
   65         struct          cam_path *path; /* Compiled path for this ccb */
   66         path_id_t       path_id;        /* Path ID for the request */
   67         target_id_t     target_id;      /* Target device ID */
   68         u_int           target_lun;     /* Target LUN number */
   69         u_int32_t       flags;          /* ccb_flags */
   70         ccb_ppriv_area  periph_priv;
   71         ccb_spriv_area  sim_priv;
   72         u_int32_t       timeout;        /* Hard timeout value in seconds */
   73         struct callout_handle timeout_ch;
   74 };
   75 
   76 struct ccb_pathinq_0x17 {
   77         struct ccb_hdr_0x17 ccb_h;
   78         u_int8_t    version_num;        /* Version number for the SIM/HBA */
   79         u_int8_t    hba_inquiry;        /* Mimic of INQ byte 7 for the HBA */
   80         u_int8_t    target_sprt;        /* Flags for target mode support */
   81         u_int8_t    hba_misc;           /* Misc HBA features */
   82         u_int16_t   hba_eng_cnt;        /* HBA engine count */
   83                                         /* Vendor Unique capabilities */
   84         u_int8_t    vuhba_flags[VUHBALEN];
   85         u_int32_t   max_target;         /* Maximum supported Target */
   86         u_int32_t   max_lun;            /* Maximum supported Lun */
   87         u_int32_t   async_flags;        /* Installed Async handlers */
   88         path_id_t   hpath_id;           /* Highest Path ID in the subsystem */
   89         target_id_t initiator_id;       /* ID of the HBA on the SCSI bus */
   90         char        sim_vid[SIM_IDLEN]; /* Vendor ID of the SIM */
   91         char        hba_vid[HBA_IDLEN]; /* Vendor ID of the HBA */
   92         char        dev_name[DEV_IDLEN];/* Device name for SIM */
   93         u_int32_t   unit_number;        /* Unit number for SIM */
   94         u_int32_t   bus_id;             /* Bus ID for SIM */
   95         u_int32_t   base_transfer_speed;/* Base bus speed in KB/sec */
   96         cam_proto   protocol;
   97         u_int       protocol_version;
   98         cam_xport   transport;
   99         u_int       transport_version;
  100         union {
  101                 struct ccb_pathinq_settings_spi spi;
  102                 struct ccb_pathinq_settings_fc fc;
  103                 struct ccb_pathinq_settings_sas sas;
  104                 char ccb_pathinq_settings_opaque[PATHINQ_SETTINGS_SIZE];
  105         } xport_specific;
  106         u_int           maxio;          /* Max supported I/O size, in bytes. */
  107         u_int16_t       hba_vendor;     /* HBA vendor ID */
  108         u_int16_t       hba_device;     /* HBA device ID */
  109         u_int16_t       hba_subvendor;  /* HBA subvendor ID */
  110         u_int16_t       hba_subdevice;  /* HBA subdevice ID */
  111 };
  112 
  113 struct ccb_trans_settings_0x17 {
  114         struct    ccb_hdr_0x17 ccb_h;
  115         cts_type  type;         /* Current or User settings */
  116         cam_proto protocol;
  117         u_int     protocol_version;
  118         cam_xport transport;
  119         u_int     transport_version;
  120         union {
  121                 u_int  valid;   /* Which fields to honor */
  122                 struct ccb_trans_settings_ata ata;
  123                 struct ccb_trans_settings_scsi scsi;
  124         } proto_specific;
  125         union {
  126                 u_int  valid;   /* Which fields to honor */
  127                 struct ccb_trans_settings_spi spi;
  128                 struct ccb_trans_settings_fc fc;
  129                 struct ccb_trans_settings_sas sas;
  130                 struct ccb_trans_settings_pata ata;
  131                 struct ccb_trans_settings_sata sata;
  132         } xport_specific;
  133 };
  134 
  135 #define CAM_0X17_DATA_LEN       CAM_0X18_DATA_LEN
  136 #define CAM_0X17_LEN            (sizeof(struct ccb_hdr_0x17) + CAM_0X17_DATA_LEN)
  137 
  138 #define CAMIOCOMMAND_0x17       _IOC(IOC_INOUT, CAM_VERSION_0x17, 2, CAM_0X17_LEN)
  139 #define CAMGETPASSTHRU_0x17     _IOC(IOC_INOUT, CAM_VERSION_0x17, 3, CAM_0X17_LEN)
  140 
  141 /* Version 0x18 compatibility */
  142 #define CAM_VERSION_0x18        0x18
  143 
  144 struct ccb_hdr_0x18 {
  145         cam_pinfo       pinfo;          /* Info for priority scheduling */
  146         camq_entry      xpt_links;      /* For chaining in the XPT layer */     
  147         camq_entry      sim_links;      /* For chaining in the SIM layer */     
  148         camq_entry      periph_links;   /* For chaining in the type driver */
  149         u_int32_t       retry_count;
  150         void            (*cbfcnp)(struct cam_periph *, union ccb *);
  151         xpt_opcode      func_code;      /* XPT function code */
  152         u_int32_t       status;         /* Status returned by CAM subsystem */
  153         struct          cam_path *path; /* Compiled path for this ccb */
  154         path_id_t       path_id;        /* Path ID for the request */
  155         target_id_t     target_id;      /* Target device ID */
  156         u_int           target_lun;     /* Target LUN number */
  157         u_int64_t       ext_lun;        /* 64-bit LUN, more or less */
  158         u_int32_t       flags;          /* ccb_flags */
  159         u_int32_t       xflags;         /* extended ccb_flags */
  160         ccb_ppriv_area  periph_priv;
  161         ccb_spriv_area  sim_priv;
  162         ccb_qos_area    qos;
  163         u_int32_t       timeout;        /* Hard timeout value in seconds */
  164         struct timeval  softtimeout;    /* Soft timeout value in sec + usec */
  165 };
  166 
  167 typedef enum {
  168         CAM_EXTLUN_VALID_0x18   = 0x00000001,/* 64bit lun field is valid      */
  169 } ccb_xflags_0x18;
  170 
  171 struct ccb_trans_settings_0x18 {
  172         struct    ccb_hdr_0x18 ccb_h;
  173         cts_type  type;         /* Current or User settings */
  174         cam_proto protocol;
  175         u_int     protocol_version;
  176         cam_xport transport;
  177         u_int     transport_version;
  178         union {
  179                 u_int  valid;   /* Which fields to honor */
  180                 struct ccb_trans_settings_ata ata;
  181                 struct ccb_trans_settings_scsi scsi;
  182         } proto_specific;
  183         union {
  184                 u_int  valid;   /* Which fields to honor */
  185                 struct ccb_trans_settings_spi spi;
  186                 struct ccb_trans_settings_fc fc;
  187                 struct ccb_trans_settings_sas sas;
  188                 struct ccb_trans_settings_pata ata;
  189                 struct ccb_trans_settings_sata sata;
  190         } xport_specific;
  191 };
  192 
  193 struct dev_match_result_0x18 {
  194         dev_match_type          type;
  195         union {
  196                 struct {
  197                         char periph_name[DEV_IDLEN];
  198                         u_int32_t unit_number;
  199                         path_id_t path_id;
  200                         target_id_t target_id;
  201                         u_int target_lun;
  202                 } periph_result;
  203                 struct {
  204                         path_id_t       path_id;
  205                         target_id_t     target_id;
  206                         u_int           target_lun;
  207                         cam_proto       protocol;
  208                         struct scsi_inquiry_data inq_data;
  209                         struct ata_params ident_data;
  210                         dev_result_flags flags;
  211                 } device_result;
  212                 struct bus_match_result bus_result;
  213         } result;
  214 };
  215 
  216 #define CAM_0X18_DATA_LEN       (sizeof(union ccb) - 2*sizeof(void *) - sizeof(struct ccb_hdr))
  217 #define CAM_0X18_LEN            (sizeof(struct ccb_hdr_0x18) + CAM_0X18_DATA_LEN)
  218 
  219 #define CAMIOCOMMAND_0x18       _IOC(IOC_INOUT, CAM_VERSION_0x18, 2, CAM_0X18_LEN)
  220 #define CAMGETPASSTHRU_0x18     _IOC(IOC_INOUT, CAM_VERSION_0x18, 3, CAM_0X18_LEN)
  221 
  222 #endif
  223 #endif

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