cam.c

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    1 /*-
    2  * Generic utility routines for the Common Access Method layer.
    3  *
    4  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
    5  *
    6  * Copyright (c) 1997 Justin T. Gibbs.
    7  * All rights reserved.
    8  *
    9  * Redistribution and use in source and binary forms, with or without
   10  * modification, are permitted provided that the following conditions
   11  * are met:
   12  * 1. Redistributions of source code must retain the above copyright
   13  *    notice, this list of conditions, and the following disclaimer,
   14  *    without modification, immediately at the beginning of the file.
   15  * 2. The name of the author may not be used to endorse or promote products
   16  *    derived from this software without specific prior written permission.
   17  *
   18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   19  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   20  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   21  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
   22  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   23  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   24  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   25  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   26  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   27  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   28  * SUCH DAMAGE.
   29  */
   30 
   31 #include <sys/cdefs.h>
   32 __FBSDID("$FreeBSD$");
   33 
   34 #include <sys/param.h>
   35 #ifdef _KERNEL
   36 #include <sys/systm.h>
   37 #include <sys/kernel.h>
   38 #include <sys/sysctl.h>
   39 #else /* _KERNEL */
   40 #include <stdlib.h>
   41 #include <stdio.h>
   42 #include <string.h>
   43 #include <camlib.h>
   44 #endif /* _KERNEL */
   45 
   46 #include <cam/cam.h>
   47 #include <cam/cam_ccb.h>
   48 #include <cam/scsi/scsi_all.h>
   49 #include <cam/scsi/smp_all.h>
   50 #include <sys/sbuf.h>
   51 
   52 #ifdef _KERNEL
   53 #include <sys/libkern.h>
   54 #include <cam/cam_queue.h>
   55 #include <cam/cam_xpt.h>
   56 
   57 FEATURE(scbus, "SCSI devices support");
   58 
   59 #endif
   60 
   61 static int      camstatusentrycomp(const void *key, const void *member);
   62 
   63 const struct cam_status_entry cam_status_table[] = {
   64         { CAM_REQ_INPROG,        "CCB request is in progress"                },
   65         { CAM_REQ_CMP,           "CCB request completed without error"       },
   66         { CAM_REQ_ABORTED,       "CCB request aborted by the host"           },
   67         { CAM_UA_ABORT,          "Unable to abort CCB request"               },
   68         { CAM_REQ_CMP_ERR,       "CCB request completed with an error"       },
   69         { CAM_BUSY,              "CAM subsystem is busy"                     },
   70         { CAM_REQ_INVALID,       "CCB request was invalid"                   },
   71         { CAM_PATH_INVALID,      "Supplied Path ID is invalid"               },
   72         { CAM_DEV_NOT_THERE,     "Device Not Present"                        },
   73         { CAM_UA_TERMIO,         "Unable to terminate I/O CCB request"       },
   74         { CAM_SEL_TIMEOUT,       "Selection Timeout"                         },
   75         { CAM_CMD_TIMEOUT,       "Command timeout"                           },
   76         { CAM_SCSI_STATUS_ERROR, "SCSI Status Error"                         },
   77         { CAM_MSG_REJECT_REC,    "Message Reject Reveived"                   },
   78         { CAM_SCSI_BUS_RESET,    "SCSI Bus Reset Sent/Received"              },
   79         { CAM_UNCOR_PARITY,      "Uncorrectable parity/CRC error"            },
   80         { CAM_AUTOSENSE_FAIL,    "Auto-Sense Retrieval Failed"               },
   81         { CAM_NO_HBA,            "No HBA Detected"                           },
   82         { CAM_DATA_RUN_ERR,      "Data Overrun error"                        },
   83         { CAM_UNEXP_BUSFREE,     "Unexpected Bus Free"                       },
   84         { CAM_SEQUENCE_FAIL,     "Target Bus Phase Sequence Failure"         },
   85         { CAM_CCB_LEN_ERR,       "CCB length supplied is inadequate"         },
   86         { CAM_PROVIDE_FAIL,      "Unable to provide requested capability"    },
   87         { CAM_BDR_SENT,          "SCSI BDR Message Sent"                     },
   88         { CAM_REQ_TERMIO,        "CCB request terminated by the host"        },
   89         { CAM_UNREC_HBA_ERROR,   "Unrecoverable Host Bus Adapter Error"      },
   90         { CAM_REQ_TOO_BIG,       "The request was too large for this host"   },
   91         { CAM_REQUEUE_REQ,       "Unconditionally Re-queue Request",         },
   92         { CAM_ATA_STATUS_ERROR,  "ATA Status Error"                          },
   93         { CAM_SCSI_IT_NEXUS_LOST,"Initiator/Target Nexus Lost"               },
   94         { CAM_SMP_STATUS_ERROR,  "SMP Status Error"                          },
   95         { CAM_IDE,               "Initiator Detected Error Message Received" },
   96         { CAM_RESRC_UNAVAIL,     "Resource Unavailable"                      },
   97         { CAM_UNACKED_EVENT,     "Unacknowledged Event by Host"              },
   98         { CAM_MESSAGE_RECV,      "Message Received in Host Target Mode"      },
   99         { CAM_INVALID_CDB,       "Invalid CDB received in Host Target Mode"  },
  100         { CAM_LUN_INVALID,       "Invalid Lun"                               },
  101         { CAM_TID_INVALID,       "Invalid Target ID"                         },
  102         { CAM_FUNC_NOTAVAIL,     "Function Not Available"                    },
  103         { CAM_NO_NEXUS,          "Nexus Not Established"                     },
  104         { CAM_IID_INVALID,       "Invalid Initiator ID"                      },
  105         { CAM_CDB_RECVD,         "CDB Received"                              },
  106         { CAM_LUN_ALRDY_ENA,     "LUN Already Enabled for Target Mode"       },
  107         { CAM_SCSI_BUSY,         "SCSI Bus Busy"                             },
  108 };
  109 
  110 #ifdef _KERNEL
  111 SYSCTL_NODE(_kern, OID_AUTO, cam, CTLFLAG_RD | CTLFLAG_MPSAFE, 0,
  112     "CAM Subsystem");
  113 
  114 #ifndef CAM_DEFAULT_SORT_IO_QUEUES
  115 #define CAM_DEFAULT_SORT_IO_QUEUES 1
  116 #endif
  117 
  118 int cam_sort_io_queues = CAM_DEFAULT_SORT_IO_QUEUES;
  119 SYSCTL_INT(_kern_cam, OID_AUTO, sort_io_queues, CTLFLAG_RWTUN,
  120     &cam_sort_io_queues, 0, "Sort IO queues to try and optimise disk access patterns");
  121 #endif
  122 
  123 void
  124 cam_strvis(u_int8_t *dst, const u_int8_t *src, int srclen, int dstlen)
  125 {
  126         cam_strvis_flag(dst, src, srclen, dstlen,
  127             CAM_STRVIS_FLAG_NONASCII_ESC);
  128 }
  129 
  130 void
  131 cam_strvis_flag(u_int8_t *dst, const u_int8_t *src, int srclen, int dstlen,
  132                 uint32_t flags)
  133 {
  134         struct sbuf sb;
  135 
  136         sbuf_new(&sb, dst, dstlen, SBUF_FIXEDLEN);
  137         cam_strvis_sbuf(&sb, src, srclen, flags);
  138         sbuf_finish(&sb);
  139 }
  140 
  141 void
  142 cam_strvis_sbuf(struct sbuf *sb, const u_int8_t *src, int srclen,
  143                 uint32_t flags)
  144 {
  145 
  146         /* Trim leading/trailing spaces, nulls. */
  147         while (srclen > 0 && src[0] == ' ')
  148                 src++, srclen--;
  149         while (srclen > 0
  150             && (src[srclen-1] == ' ' || src[srclen-1] == '\0'))
  151                 srclen--;
  152 
  153         while (srclen > 0) {
  154                 if (*src < 0x20 || *src >= 0x80) {
  155                         /* SCSI-II Specifies that these should never occur. */
  156                         /* non-printable character */
  157                         switch (flags & CAM_STRVIS_FLAG_NONASCII_MASK) {
  158                         case CAM_STRVIS_FLAG_NONASCII_ESC:
  159                                 sbuf_printf(sb, "\\%c%c%c", 
  160                                     ((*src & 0300) >> 6) + '',
  161                                     ((*src & 0070) >> 3) + '',
  162                                     ((*src & 0007) >> 0) + '');
  163                                 break;
  164                         case CAM_STRVIS_FLAG_NONASCII_RAW:
  165                                 /*
  166                                  * If we run into a NUL, just transform it
  167                                  * into a space.
  168                                  */
  169                                 if (*src != 0x00)
  170                                         sbuf_putc(sb, *src);
  171                                 else
  172                                         sbuf_putc(sb, ' ');
  173                                 break;
  174                         case CAM_STRVIS_FLAG_NONASCII_SPC:
  175                                 sbuf_putc(sb, ' ');
  176                                 break;
  177                         case CAM_STRVIS_FLAG_NONASCII_TRIM:
  178                         default:
  179                                 break;
  180                         }
  181                 } else {
  182                         /* normal character */
  183                         sbuf_putc(sb, *src);
  184                 }
  185                 src++;
  186                 srclen--;
  187         }
  188 }
  189 
  190 /*
  191  * Compare string with pattern, returning 0 on match.
  192  * Short pattern matches trailing blanks in name,
  193  * Shell globbing rules apply: * matches 0 or more characters,
  194  * ? matchces one character, [...] denotes a set to match one char,
  195  * [^...] denotes a complimented set to match one character.
  196  * Spaces in str used to match anything in the pattern string
  197  * but was removed because it's a bug. No current patterns require
  198  * it, as far as I know, but it's impossible to know what drives
  199  * returned.
  200  *
  201  * Each '*' generates recursion, so keep the number of * in check.
  202  */
  203 int
  204 cam_strmatch(const u_int8_t *str, const u_int8_t *pattern, int str_len)
  205 {
  206 
  207         while (*pattern != '\0' && str_len > 0) {  
  208                 if (*pattern == '*') {
  209                         pattern++;
  210                         if (*pattern == '\0')
  211                                 return (0);
  212                         do {
  213                                 if (cam_strmatch(str, pattern, str_len) == 0)
  214                                         return (0);
  215                                 str++;
  216                                 str_len--;
  217                         } while (str_len > 0);
  218                         return (1);
  219                 } else if (*pattern == '[') {
  220                         int negate_range, ok;
  221                         uint8_t pc = UCHAR_MAX;
  222                         uint8_t sc;
  223 
  224                         ok = 0;
  225                         sc = *str++;
  226                         str_len--;
  227                         pattern++;
  228                         if ((negate_range = (*pattern == '^')) != 0)
  229                                 pattern++;
  230                         while ((*pattern != ']') && *pattern != '\0') {
  231                                 if (*pattern == '-') {
  232                                         if (pattern[1] == '\0') /* Bad pattern */
  233                                                 return (1);
  234                                         if (sc >= pc && sc <= pattern[1])
  235                                                 ok = 1;
  236                                         pattern++;
  237                                 } else if (*pattern == sc)
  238                                         ok = 1;
  239                                 pc = *pattern;
  240                                 pattern++;
  241                         }
  242                         if (ok == negate_range)
  243                                 return (1);
  244                         pattern++;
  245                 } else if (*pattern == '?') {
  246                         /*
  247                          * NB: || *str == ' ' of the old code is a bug and was
  248                          * removed.  If you add it back, keep this the last if
  249                          * before the naked else */
  250                         pattern++;
  251                         str++;
  252                         str_len--;
  253                 } else {
  254                         if (*str != *pattern)
  255                                 return (1);
  256                         pattern++;
  257                         str++;
  258                         str_len--;
  259                 }
  260         }
  261 
  262         /* '*' is allowed to match nothing, so gobble it */
  263         while (*pattern == '*')
  264                 pattern++;
  265 
  266         if ( *pattern != '\0') {
  267                 /* Pattern not fully consumed.  Not a match */
  268                 return (1);
  269         }
  270 
  271         /* Eat trailing spaces, which get added by SAT */
  272         while (str_len > 0 && *str == ' ') {
  273                 str++;
  274                 str_len--;
  275         }
  276 
  277         return (str_len);
  278 }
  279 
  280 caddr_t
  281 cam_quirkmatch(caddr_t target, caddr_t quirk_table, int num_entries,
  282                int entry_size, cam_quirkmatch_t *comp_func)
  283 {
  284         for (; num_entries > 0; num_entries--, quirk_table += entry_size) {
  285                 if ((*comp_func)(target, quirk_table) == 0)
  286                         return (quirk_table);
  287         }
  288         return (NULL);
  289 }
  290 
  291 const struct cam_status_entry*
  292 cam_fetch_status_entry(cam_status status)
  293 {
  294         status &= CAM_STATUS_MASK;
  295         return (bsearch(&status, &cam_status_table,
  296                         nitems(cam_status_table),
  297                         sizeof(*cam_status_table),
  298                         camstatusentrycomp));
  299 }
  300 
  301 static int
  302 camstatusentrycomp(const void *key, const void *member)
  303 {
  304         cam_status status;
  305         const struct cam_status_entry *table_entry;
  306 
  307         status = *(const cam_status *)key;
  308         table_entry = (const struct cam_status_entry *)member;
  309 
  310         return (status - table_entry->status_code);
  311 }
  312 
  313 #ifdef _KERNEL
  314 char *
  315 cam_error_string(union ccb *ccb, char *str, int str_len,
  316                  cam_error_string_flags flags,
  317                  cam_error_proto_flags proto_flags)
  318 #else /* !_KERNEL */
  319 char *
  320 cam_error_string(struct cam_device *device, union ccb *ccb, char *str,
  321                  int str_len, cam_error_string_flags flags,
  322                  cam_error_proto_flags proto_flags)
  323 #endif /* _KERNEL/!_KERNEL */
  324 {
  325         char path_str[64];
  326         struct sbuf sb;
  327 
  328         if ((ccb == NULL)
  329          || (str == NULL)
  330          || (str_len <= 0))
  331                 return(NULL);
  332 
  333         if (flags == CAM_ESF_NONE)
  334                 return(NULL);
  335 
  336         switch (ccb->ccb_h.func_code) {
  337                 case XPT_ATA_IO:
  338                         switch (proto_flags & CAM_EPF_LEVEL_MASK) {
  339                         case CAM_EPF_NONE:
  340                                 break;
  341                         case CAM_EPF_ALL:
  342                         case CAM_EPF_NORMAL:
  343                                 proto_flags |= CAM_EAF_PRINT_RESULT;
  344                                 /* FALLTHROUGH */
  345                         case CAM_EPF_MINIMAL:
  346                                 proto_flags |= CAM_EAF_PRINT_STATUS;
  347                                 /* FALLTHROUGH */
  348                         default:
  349                                 break;
  350                         }
  351                         break;
  352                 case XPT_SCSI_IO:
  353                         switch (proto_flags & CAM_EPF_LEVEL_MASK) {
  354                         case CAM_EPF_NONE:
  355                                 break;
  356                         case CAM_EPF_ALL:
  357                         case CAM_EPF_NORMAL:
  358                                 proto_flags |= CAM_ESF_PRINT_SENSE;
  359                                 /* FALLTHROUGH */
  360                         case CAM_EPF_MINIMAL:
  361                                 proto_flags |= CAM_ESF_PRINT_STATUS;
  362                                 /* FALLTHROUGH */
  363                         default:
  364                                 break;
  365                         }
  366                         break;
  367                 case XPT_SMP_IO:
  368                         switch (proto_flags & CAM_EPF_LEVEL_MASK) {
  369                         case CAM_EPF_NONE:
  370                                 break;
  371                         case CAM_EPF_ALL:
  372                                 proto_flags |= CAM_ESMF_PRINT_FULL_CMD;
  373                                 /* FALLTHROUGH */
  374                         case CAM_EPF_NORMAL:
  375                         case CAM_EPF_MINIMAL:
  376                                 proto_flags |= CAM_ESMF_PRINT_STATUS;
  377                                 /* FALLTHROUGH */
  378                         default:
  379                                 break;
  380                         }
  381                         break;
  382                 default:
  383                         break;
  384         }
  385 #ifdef _KERNEL
  386         xpt_path_string(ccb->csio.ccb_h.path, path_str, sizeof(path_str));
  387 #else /* !_KERNEL */
  388         cam_path_string(device, path_str, sizeof(path_str));
  389 #endif /* _KERNEL/!_KERNEL */
  390 
  391         sbuf_new(&sb, str, str_len, 0);
  392 
  393         if (flags & CAM_ESF_COMMAND) {
  394                 sbuf_cat(&sb, path_str);
  395                 switch (ccb->ccb_h.func_code) {
  396                 case XPT_ATA_IO:
  397                         ata_command_sbuf(&ccb->ataio, &sb);
  398                         break;
  399                 case XPT_SCSI_IO:
  400 #ifdef _KERNEL
  401                         scsi_command_string(&ccb->csio, &sb);
  402 #else /* !_KERNEL */
  403                         scsi_command_string(device, &ccb->csio, &sb);
  404 #endif /* _KERNEL/!_KERNEL */
  405                         break;
  406                 case XPT_SMP_IO:
  407                         smp_command_sbuf(&ccb->smpio, &sb, path_str, 79 -
  408                                          strlen(path_str), (proto_flags &
  409                                          CAM_ESMF_PRINT_FULL_CMD) ? 79 : 0);
  410                         break;
  411                 case XPT_NVME_IO:
  412                 case XPT_NVME_ADMIN:
  413                         nvme_command_sbuf(&ccb->nvmeio, &sb);
  414                         break;
  415                 default:
  416                         sbuf_printf(&sb, "CAM func %#x",
  417                             ccb->ccb_h.func_code);
  418                         break;
  419                 }
  420                 sbuf_printf(&sb, "\n");
  421         }
  422 
  423         if (flags & CAM_ESF_CAM_STATUS) {
  424                 cam_status status;
  425                 const struct cam_status_entry *entry;
  426 
  427                 sbuf_cat(&sb, path_str);
  428   
  429                 status = ccb->ccb_h.status & CAM_STATUS_MASK;
  430 
  431                 entry = cam_fetch_status_entry(status);
  432 
  433                 if (entry == NULL)
  434                         sbuf_printf(&sb, "CAM status: Unknown (%#x)\n",
  435                                     ccb->ccb_h.status);
  436                 else
  437                         sbuf_printf(&sb, "CAM status: %s\n",
  438                                     entry->status_text);
  439         }
  440 
  441         if (flags & CAM_ESF_PROTO_STATUS) {
  442   
  443                 switch (ccb->ccb_h.func_code) {
  444                 case XPT_ATA_IO:
  445                         if ((ccb->ccb_h.status & CAM_STATUS_MASK) !=
  446                              CAM_ATA_STATUS_ERROR)
  447                                 break;
  448                         if (proto_flags & CAM_EAF_PRINT_STATUS) {
  449                                 sbuf_cat(&sb, path_str);
  450                                 ata_status_sbuf(&ccb->ataio, &sb);
  451                                 sbuf_printf(&sb, "\n");
  452                         }
  453                         if (proto_flags & CAM_EAF_PRINT_RESULT) {
  454                                 sbuf_cat(&sb, path_str);
  455                                 sbuf_printf(&sb, "RES: ");
  456                                 ata_res_sbuf(&ccb->ataio.res, &sb);
  457                                 sbuf_printf(&sb, "\n");
  458                         }
  459 
  460                         break;
  461                 case XPT_SCSI_IO:
  462                         if ((ccb->ccb_h.status & CAM_STATUS_MASK) !=
  463                              CAM_SCSI_STATUS_ERROR)
  464                                 break;
  465 
  466                         if (proto_flags & CAM_ESF_PRINT_STATUS) {
  467                                 sbuf_cat(&sb, path_str);
  468                                 sbuf_printf(&sb, "SCSI status: %s\n",
  469                                             scsi_status_string(&ccb->csio));
  470                         }
  471 
  472                         if ((proto_flags & CAM_ESF_PRINT_SENSE)
  473                          && (ccb->csio.scsi_status == SCSI_STATUS_CHECK_COND)
  474                          && (ccb->ccb_h.status & CAM_AUTOSNS_VALID)) {
  475 #ifdef _KERNEL
  476                                 scsi_sense_sbuf(&ccb->csio, &sb,
  477                                                 SSS_FLAG_NONE);
  478 #else /* !_KERNEL */
  479                                 scsi_sense_sbuf(device, &ccb->csio, &sb,
  480                                                 SSS_FLAG_NONE);
  481 #endif /* _KERNEL/!_KERNEL */
  482                         }
  483                         break;
  484                 case XPT_SMP_IO:
  485                         if ((ccb->ccb_h.status & CAM_STATUS_MASK) !=
  486                              CAM_SMP_STATUS_ERROR)
  487                                 break;
  488 
  489                         if (proto_flags & CAM_ESF_PRINT_STATUS) {
  490                                 sbuf_cat(&sb, path_str);
  491                                 sbuf_printf(&sb, "SMP status: %s (%#x)\n",
  492                                     smp_error_desc(ccb->smpio.smp_response[2]),
  493                                                    ccb->smpio.smp_response[2]);
  494                         }
  495                         /* There is no SMP equivalent to SCSI sense. */
  496                         break;
  497                 default:
  498                         break;
  499                 }
  500         }
  501 
  502         sbuf_finish(&sb);
  503 
  504         return(sbuf_data(&sb));
  505 }
  506 
  507 #ifdef _KERNEL
  508 
  509 void
  510 cam_error_print(union ccb *ccb, cam_error_string_flags flags,
  511                 cam_error_proto_flags proto_flags)
  512 {
  513         char str[512];
  514 
  515         printf("%s", cam_error_string(ccb, str, sizeof(str), flags,
  516                proto_flags));
  517 }
  518 
  519 #else /* !_KERNEL */
  520 
  521 void
  522 cam_error_print(struct cam_device *device, union ccb *ccb,
  523                 cam_error_string_flags flags, cam_error_proto_flags proto_flags,
  524                 FILE *ofile)
  525 {
  526         char str[512];
  527 
  528         if ((device == NULL) || (ccb == NULL) || (ofile == NULL))
  529                 return;
  530 
  531         fprintf(ofile, "%s", cam_error_string(device, ccb, str, sizeof(str),
  532                 flags, proto_flags));
  533 }
  534 
  535 #endif /* _KERNEL/!_KERNEL */
  536 
  537 /*
  538  * Common calculate geometry fuction
  539  *
  540  * Caller should set ccg->volume_size and block_size.
  541  * The extended parameter should be zero if extended translation
  542  * should not be used.
  543  */
  544 void
  545 cam_calc_geometry(struct ccb_calc_geometry *ccg, int extended)
  546 {
  547         uint32_t size_mb, secs_per_cylinder;
  548 
  549         if (ccg->block_size == 0) {
  550                 ccg->ccb_h.status = CAM_REQ_CMP_ERR;
  551                 return;
  552         }
  553         size_mb = (1024L * 1024L) / ccg->block_size;
  554         if (size_mb == 0) {
  555                 ccg->ccb_h.status = CAM_REQ_CMP_ERR;
  556                 return;
  557         }
  558         size_mb = ccg->volume_size / size_mb;
  559         if (size_mb > 1024 && extended) {
  560                 ccg->heads = 255;
  561                 ccg->secs_per_track = 63;
  562         } else {
  563                 ccg->heads = 64;
  564                 ccg->secs_per_track = 32;
  565         }
  566         secs_per_cylinder = ccg->heads * ccg->secs_per_track;
  567         if (secs_per_cylinder == 0) {
  568                 ccg->ccb_h.status = CAM_REQ_CMP_ERR;
  569                 return;
  570         }
  571         ccg->cylinders = ccg->volume_size / secs_per_cylinder;
  572         ccg->ccb_h.status = CAM_REQ_CMP;
  573 }
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FreeBSD/Linux Kernel Cross Reference sys/cam/cam.c

FreeBSD/Linux Kernel Cross Reference
sys/cam/cam.c
