scsireq.h 6.8 KB

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  1. enum { /* fundamental constants/defaults */
  2. NTargetID = 8, /* number of target IDs */
  3. CtlrID = 7, /* default controller target ID */
  4. MaxDirData = 255, /* max. direct data returned */
  5. /*
  6. * default & maximum `maximum i/o size'; overridden by -m.
  7. * limits kernel memory consumption.
  8. * 240K is exabyte maximum block size.
  9. */
  10. MaxIOsize = 240*1024,
  11. LBsize = 512, /* default logical-block size */
  12. };
  13. typedef struct {
  14. uchar *p;
  15. long count;
  16. uchar write;
  17. } ScsiPtr;
  18. typedef struct {
  19. int flags;
  20. char *unit; /* unit directory */
  21. int lun;
  22. ulong lbsize;
  23. ulong offset; /* in blocks of lbsize bytes */
  24. int fd;
  25. ScsiPtr cmd;
  26. ScsiPtr data;
  27. int status; /* returned status */
  28. uchar sense[MaxDirData]; /* returned sense data */
  29. uchar inquiry[MaxDirData]; /* returned inquiry data */
  30. int readblock; /* flag: read a block since open */
  31. } ScsiReq;
  32. enum { /* software flags */
  33. Fopen = 0x0001, /* open */
  34. Fseqdev = 0x0002, /* sequential-access device */
  35. Fwritten = 0x0004, /* device written */
  36. Fronly = 0x0008, /* device is read-only */
  37. Fwormdev = 0x0010, /* write-once read-multiple device */
  38. Fprintdev = 0x0020, /* printer */
  39. Fbfixed = 0x0040, /* fixed block size */
  40. Fchanger = 0x0080, /* medium-changer device */
  41. Finqok = 0x0100, /* inquiry data is OK */
  42. Fmode6 = 0x0200, /* use 6-byte modeselect */
  43. Frw10 = 0x0400, /* use 10-byte read/write */
  44. };
  45. enum {
  46. STnomem =-4, /* buffer allocation failed */
  47. STharderr =-3, /* controller error of some kind */
  48. STtimeout =-2, /* bus timeout */
  49. STok = 0, /* good */
  50. STcheck = 0x02, /* check condition */
  51. STcondmet = 0x04, /* condition met/good */
  52. STbusy = 0x08, /* busy */
  53. STintok = 0x10, /* intermediate/good */
  54. STintcondmet = 0x14, /* intermediate/condition met/good */
  55. STresconf = 0x18, /* reservation conflict */
  56. STterminated = 0x22, /* command terminated */
  57. STqfull = 0x28, /* queue full */
  58. };
  59. enum { /* status */
  60. Status_SD = 0x80, /* sense-data available */
  61. Status_SW = 0x83, /* internal software error */
  62. Status_BADARG = 0x84, /* bad argument to request */
  63. Status_RO = 0x85, /* device is read-only */
  64. };
  65. enum { /* SCSI command codes */
  66. ScmdTur = 0x00, /* test unit ready */
  67. ScmdRewind = 0x01, /* rezero/rewind */
  68. ScmdRsense = 0x03, /* request sense */
  69. ScmdFormat = 0x04, /* format unit */
  70. ScmdRblimits = 0x05, /* read block limits */
  71. ScmdRead = 0x08, /* read */
  72. ScmdWrite = 0x0A, /* write */
  73. ScmdSeek = 0x0B, /* seek */
  74. ScmdFmark = 0x10, /* write filemarks */
  75. ScmdSpace = 0x11, /* space forward/backward */
  76. ScmdInq = 0x12, /* inquiry */
  77. ScmdMselect6 = 0x15, /* mode select */
  78. ScmdMselect10 = 0x55, /* mode select */
  79. ScmdMsense6 = 0x1A, /* mode sense */
  80. ScmdMsense10 = 0x5A, /* mode sense */
  81. ScmdStart = 0x1B, /* start/stop unit */
  82. ScmdRcapacity = 0x25, /* read capacity */
  83. ScmdExtread = 0x28, /* extended read */
  84. ScmdExtwrite = 0x2A, /* extended write */
  85. ScmdExtseek = 0x2B, /* extended seek */
  86. ScmdSynccache = 0x35, /* flush cache */
  87. ScmdRTOC = 0x43, /* read TOC data */
  88. ScmdRdiscinfo = 0x51, /* read disc information */
  89. ScmdRtrackinfo = 0x52, /* read track information */
  90. ScmdBlank = 0xA1, /* blank CD-RW media */
  91. ScmdCDpause = 0x4B, /* pause/resume */
  92. ScmdCDstop = 0x4E, /* stop play/scan */
  93. ScmdCDplay = 0xA5, /* play audio */
  94. ScmdCDload = 0xA6, /* load/unload */
  95. ScmdCDscan = 0xBA, /* fast forward/reverse */
  96. ScmdCDstatus = 0xBD, /* mechanism status */
  97. Scmdgetconf = 0x46, /* get configuration */
  98. ScmdFwaddr = 0xE2, /* first writeable address */
  99. ScmdTreserve = 0xE4, /* reserve track */
  100. ScmdTinfo = 0xE5, /* read track info */
  101. ScmdTwrite = 0xE6, /* write track */
  102. ScmdMload = 0xE7, /* medium load/unload */
  103. ScmdFixation = 0xE9, /* fixation */
  104. ScmdEInitialise = 0x07, /* initialise element status */
  105. ScmdMMove = 0xA5, /* move medium */
  106. ScmdEStatus = 0xB8, /* read element status */
  107. ScmdMExchange = 0xA6, /* exchange medium */
  108. ScmdEposition = 0x2B, /* position to element */
  109. ScmdReadDVD = 0xAD, /* read dvd structure */
  110. ScmdReportKey = 0xA4, /* read dvd key */
  111. ScmdSendKey = 0xA3, /* write dvd key */
  112. };
  113. enum {
  114. /* sense data byte 0 */
  115. Sd0valid = 0x80, /* valid sense data present */
  116. /* sense data byte 2 */
  117. /* incorrect-length indicator, difference in bytes 3—6 */
  118. Sd2ili = 0x20,
  119. Sd2eom = 0x40, /* end of medium (tape) */
  120. Sd2filemark = 0x80, /* at a filemark (tape) */
  121. /* command byte 1 */
  122. Cmd1fixed = 1, /* use fixed-length blocks */
  123. Cmd1sili = 2, /* don't set Sd2ili */
  124. /* limit of block #s in 24-bit ccbs */
  125. Max24off = (1<<21) - 1, /* 2⁲ⁱ - 1 */
  126. /* mode pages */
  127. Allmodepages = 0x3F,
  128. };
  129. /* p arguments should be of type uchar* */
  130. #define GETBELONG(p) ((ulong)(p)[0]<<24 | (ulong)(p)[1]<<16 | (p)[2]<<8 | (p)[3])
  131. #define PUTBELONG(p, ul) ((p)[0] = (ul)>>24, (p)[1] = (ul)>>16, \
  132. (p)[2] = (ul)>>8, (p)[3] = (ul))
  133. #define GETBE24(p) ((ulong)(p)[0]<<16 | (p)[1]<<8 | (p)[2])
  134. #define PUTBE24(p, ul) ((p)[0] = (ul)>>16, (p)[1] = (ul)>>8, (p)[2] = (ul))
  135. extern long SRready(ScsiReq*);
  136. extern long SRrewind(ScsiReq*);
  137. extern long SRreqsense(ScsiReq*);
  138. extern long SRformat(ScsiReq*);
  139. extern long SRrblimits(ScsiReq*, uchar*);
  140. extern long SRread(ScsiReq*, void*, long);
  141. extern long SRwrite(ScsiReq*, void*, long);
  142. extern long SRseek(ScsiReq*, long, int);
  143. extern long SRfilemark(ScsiReq*, ulong);
  144. extern long SRspace(ScsiReq*, uchar, long);
  145. extern long SRinquiry(ScsiReq*);
  146. extern long SRmodeselect6(ScsiReq*, uchar*, long);
  147. extern long SRmodeselect10(ScsiReq*, uchar*, long);
  148. extern long SRmodesense6(ScsiReq*, uchar, uchar*, long);
  149. extern long SRmodesense10(ScsiReq*, uchar, uchar*, long);
  150. extern long SRstart(ScsiReq*, uchar);
  151. extern long SRrcapacity(ScsiReq*, uchar*);
  152. extern long SRblank(ScsiReq*, uchar, uchar); /* MMC CD-R/CD-RW commands */
  153. extern long SRsynccache(ScsiReq*);
  154. extern long SRTOC(ScsiReq*, void*, int, uchar, uchar);
  155. extern long SRrdiscinfo(ScsiReq*, void*, int);
  156. extern long SRrtrackinfo(ScsiReq*, void*, int, int);
  157. extern long SRcdpause(ScsiReq*, int); /* MMC CD audio commands */
  158. extern long SRcdstop(ScsiReq*);
  159. extern long SRcdload(ScsiReq*, int, int);
  160. extern long SRcdplay(ScsiReq*, int, long, long);
  161. extern long SRcdstatus(ScsiReq*, uchar*, int);
  162. extern long SRgetconf(ScsiReq*, uchar*, int);
  163. extern long SRfwaddr(ScsiReq*, uchar, uchar, uchar, uchar*); /* old CD-R/CD-RW commands */
  164. extern long SRtreserve(ScsiReq*, long);
  165. extern long SRtinfo(ScsiReq*, uchar, uchar*);
  166. extern long SRwtrack(ScsiReq*, void*, long, uchar, uchar);
  167. extern long SRmload(ScsiReq*, uchar);
  168. extern long SRfixation(ScsiReq*, uchar);
  169. extern long SReinitialise(ScsiReq*); /* CHANGER commands */
  170. extern long SRestatus(ScsiReq*, uchar, uchar*, int);
  171. extern long SRmmove(ScsiReq*, int, int, int, int);
  172. extern long SRrequest(ScsiReq*);
  173. extern int SRclose(ScsiReq*);
  174. extern int SRopenraw(ScsiReq*, char*);
  175. extern int SRopen(ScsiReq*, char*);
  176. extern void makesense(ScsiReq*);