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1.1 ! root 1: /* ! 2: * Written by Julian Elischer ([email protected]) ! 3: * for TRW Financial Systems for use under the MACH(2.5) operating system. ! 4: * ! 5: * TRW Financial Systems, in accordance with their agreement with Carnegie ! 6: * Mellon University, makes this software available to CMU to distribute ! 7: * or use in any manner that they see fit as long as this message is kept with ! 8: * the software. For this reason TFS also grants any other persons or ! 9: * organisations permission to use or modify this software. ! 10: * ! 11: * TFS supplies this software to be publicly redistributed ! 12: * on the understanding that TFS is not responsible for the correct ! 13: * functioning of this software in any circumstances. ! 14: * ! 15: * ! 16: * PATCHES MAGIC LEVEL PATCH THAT GOT US HERE ! 17: * -------------------- ----- ---------------------- ! 18: * CURRENT PATCH LEVEL: 1 00098 ! 19: * -------------------- ----- ---------------------- ! 20: * ! 21: * 16 Feb 93 Julian Elischer ADDED for SCSI system ! 22: */ ! 23: ! 24: /* ! 25: * HISTORY ! 26: * $Log: bt742a.c,v $ ! 27: * Revision 1.2 1993/04/10 12:05:14 glass ! 28: * fixed to be compliant, subservient, and to take advantage of the newly ! 29: * hacked config(8) ! 30: * ! 31: * Revision 1.1 1993/03/21 18:10:06 cgd ! 32: * after 0.2.2 "stable" patches applied ! 33: * ! 34: * Revision 1.7 1992/08/24 22:40:16 jason ! 35: * BIG_DMA ifdef for 512 dma segments instead of 128 segments ! 36: * ! 37: * Revision 1.6 1992/08/24 21:01:58 jason ! 38: * many changes and bugfixes for osf1 ! 39: * ! 40: * Revision 1.5 1992/07/31 01:22:03 julian ! 41: * support improved scsi.h layout ! 42: * ! 43: * Revision 1.4 1992/07/25 03:11:26 julian ! 44: * check each request fro sane flags. ! 45: * ! 46: * Revision 1.3 1992/07/24 00:52:45 julian ! 47: * improved timeout handling. ! 48: * added support for two arguments to the sd_done (or equiv) call so that ! 49: * they can pre-queue several arguments. ! 50: * slightly clean up error handling ! 51: * ! 52: * Revision 1.2 1992/07/17 22:03:54 julian ! 53: * upgraded the timeout code. ! 54: * added support for UIO-based i/o (as used for pmem operations) ! 55: * ! 56: * Revision 1.1 1992/05/27 00:51:12 balsup ! 57: * machkern/cor merge ! 58: * ! 59: */ ! 60: ! 61: /* ! 62: * bt742a BT-1542A SCSI driver ! 63: */ ! 64: ! 65: #include <sys/types.h> ! 66: #include <bt.h> ! 67: ! 68: #include <sys/param.h> ! 69: #include <sys/systm.h> ! 70: #include <sys/errno.h> ! 71: #include <sys/ioctl.h> ! 72: #include <sys/buf.h> ! 73: #include <sys/proc.h> ! 74: #include <sys/user.h> ! 75: ! 76: #ifdef MACH /* EITHER CMU OR OSF */ ! 77: #include <i386/ipl.h> ! 78: #include <i386at/scsi.h> ! 79: #include <i386at/scsiconf.h> ! 80: ! 81: #ifdef OSF /* OSF ONLY */ ! 82: #include <sys/table.h> ! 83: #include <i386/handler.h> ! 84: #include <i386/dispatcher.h> ! 85: #include <i386/AT386/atbus.h> ! 86: ! 87: #else OSF /* CMU ONLY */ ! 88: #include <i386at/atbus.h> ! 89: #include <i386/pio.h> ! 90: #endif OSF ! 91: #endif MACH /* end of MACH specific */ ! 92: ! 93: #ifdef __386BSD__ /* 386BSD specific */ ! 94: #define isa_dev isa_device ! 95: #define dev_unit id_unit ! 96: #define dev_addr id_iobase ! 97: ! 98: #include <i386/isa/isa_device.h> ! 99: #include <scsi/scsi_all.h> ! 100: #include <scsi/scsiconf.h> ! 101: #endif __386BSD__ ! 102: ! 103: ! 104: #ifdef __386BSD__ ! 105: #ifdef DDB ! 106: int Debugger(); ! 107: #else ! 108: #define Debugger() panic("should call debugger here (adaptec.c)") ! 109: #endif /*!DDB*/ ! 110: #endif __386BSD__ ! 111: ! 112: #ifdef MACH ! 113: int Debugger(); ! 114: #endif MACH ! 115: ! 116: extern int delaycount; /* from clock setup code */ ! 117: typedef unsigned long int physaddr; ! 118: ! 119: /* ! 120: * I/O Port Interface ! 121: */ ! 122: ! 123: #define BT_BASE bt_base[unit] ! 124: #define BT_CTRL_STAT_PORT (BT_BASE + 0x0) /* control & status */ ! 125: #define BT_CMD_DATA_PORT (BT_BASE + 0x1) /* cmds and datas */ ! 126: #define BT_INTR_PORT (BT_BASE + 0x2) /* Intr. stat */ ! 127: ! 128: /* ! 129: * BT_CTRL_STAT bits (write) ! 130: */ ! 131: ! 132: #define BT_HRST 0x80 /* Hardware reset */ ! 133: #define BT_SRST 0x40 /* Software reset */ ! 134: #define BT_IRST 0x20 /* Interrupt reset */ ! 135: #define BT_SCRST 0x10 /* SCSI bus reset */ ! 136: ! 137: /* ! 138: * BT_CTRL_STAT bits (read) ! 139: */ ! 140: ! 141: #define BT_STST 0x80 /* Self test in Progress */ ! 142: #define BT_DIAGF 0x40 /* Diagnostic Failure */ ! 143: #define BT_INIT 0x20 /* Mbx Init required */ ! 144: #define BT_IDLE 0x10 /* Host Adapter Idle */ ! 145: #define BT_CDF 0x08 /* cmd/data out port full */ ! 146: #define BT_DF 0x04 /* Data in port full */ ! 147: #define BT_INVDCMD 0x01 /* Invalid command */ ! 148: ! 149: /* ! 150: * BT_CMD_DATA bits (write) ! 151: */ ! 152: ! 153: #define BT_NOP 0x00 /* No operation */ ! 154: #define BT_MBX_INIT 0x01 /* Mbx initialization */ ! 155: #define BT_START_SCSI 0x02 /* start scsi command */ ! 156: #define BT_START_BIOS 0x03 /* start bios command */ ! 157: #define BT_INQUIRE 0x04 /* Adapter Inquiry */ ! 158: #define BT_MBO_INTR_EN 0x05 /* Enable MBO available interrupt */ ! 159: #define BT_SEL_TIMEOUT_SET 0x06 /* set selection time-out */ ! 160: #define BT_BUS_ON_TIME_SET 0x07 /* set bus-on time */ ! 161: #define BT_BUS_OFF_TIME_SET 0x08 /* set bus-off time */ ! 162: #define BT_SPEED_SET 0x09 /* set transfer speed */ ! 163: #define BT_DEV_GET 0x0a /* return installed devices */ ! 164: #define BT_CONF_GET 0x0b /* return configuration data */ ! 165: #define BT_TARGET_EN 0x0c /* enable target mode */ ! 166: #define BT_SETUP_GET 0x0d /* return setup data */ ! 167: #define BT_WRITE_CH2 0x1a /* write channel 2 buffer */ ! 168: #define BT_READ_CH2 0x1b /* read channel 2 buffer */ ! 169: #define BT_WRITE_FIFO 0x1c /* write fifo buffer */ ! 170: #define BT_READ_FIFO 0x1d /* read fifo buffer */ ! 171: #define BT_ECHO 0x1e /* Echo command data */ ! 172: #define BT_MBX_INIT_EXTENDED 0x81 /* Mbx initialization */ ! 173: #define BT_INQUIRE_EXTENDED 0x8D /* Adapter Setup Inquiry */ ! 174: ! 175: struct bt_cmd_buf { ! 176: u_char byte[16]; ! 177: }; ! 178: ! 179: /* ! 180: * BT_INTR_PORT bits (read) ! 181: */ ! 182: ! 183: #define BT_ANY_INTR 0x80 /* Any interrupt */ ! 184: #define BT_SCRD 0x08 /* SCSI reset detected */ ! 185: #define BT_HACC 0x04 /* Command complete */ ! 186: #define BT_MBOA 0x02 /* MBX out empty */ ! 187: #define BT_MBIF 0x01 /* MBX in full */ ! 188: ! 189: /* ! 190: * Mail box defs ! 191: */ ! 192: ! 193: #define BT_MBX_SIZE 16 /* mail box size */ ! 194: ! 195: struct bt_mbx ! 196: { ! 197: struct bt_mbx_out { ! 198: physaddr ccb_addr; ! 199: unsigned char dummy[3]; ! 200: unsigned char cmd; ! 201: } mbo [BT_MBX_SIZE]; ! 202: struct bt_mbx_in{ ! 203: physaddr ccb_addr; ! 204: unsigned char btstat; ! 205: unsigned char sdstat; ! 206: unsigned char dummy; ! 207: unsigned char stat; ! 208: } mbi[BT_MBX_SIZE]; ! 209: }; ! 210: ! 211: /* ! 212: * mbo.cmd values ! 213: */ ! 214: ! 215: #define BT_MBO_FREE 0x0 /* MBO entry is free */ ! 216: #define BT_MBO_START 0x1 /* MBO activate entry */ ! 217: #define BT_MBO_ABORT 0x2 /* MBO abort entry */ ! 218: ! 219: #define BT_MBI_FREE 0x0 /* MBI entry is free */ ! 220: #define BT_MBI_OK 0x1 /* completed without error */ ! 221: #define BT_MBI_ABORT 0x2 /* aborted ccb */ ! 222: #define BT_MBI_UNKNOWN 0x3 /* Tried to abort invalid CCB */ ! 223: #define BT_MBI_ERROR 0x4 /* Completed with error */ ! 224: ! 225: extern struct bt_mbx bt_mbx[]; ! 226: ! 227: #if defined(BIG_DMA) ! 228: /* #define BT_NSEG 8192 /* Number of scatter gather segments - to much vm */ ! 229: #define BT_NSEG 512 ! 230: #else ! 231: #define BT_NSEG 33 ! 232: #endif /* BIG_DMA */ ! 233: struct bt_scat_gath ! 234: { ! 235: unsigned long seg_len; ! 236: physaddr seg_addr; ! 237: }; ! 238: ! 239: struct bt_ccb { ! 240: unsigned char opcode; ! 241: unsigned char :3,data_in:1,data_out:1,:3; ! 242: unsigned char scsi_cmd_length; ! 243: unsigned char req_sense_length; ! 244: /*------------------------------------longword boundary */ ! 245: unsigned long data_length; ! 246: /*------------------------------------longword boundary */ ! 247: physaddr data_addr; ! 248: /*------------------------------------longword boundary */ ! 249: unsigned char dummy[2]; ! 250: unsigned char host_stat; ! 251: unsigned char target_stat; ! 252: /*------------------------------------longword boundary */ ! 253: unsigned char target; ! 254: unsigned char lun; ! 255: unsigned char scsi_cmd[12]; /* 12 bytes (bytes only)*/ ! 256: unsigned char dummy2[1]; ! 257: unsigned char link_id; ! 258: /*------------------------------------4 longword boundary */ ! 259: physaddr link_addr; ! 260: /*------------------------------------longword boundary */ ! 261: physaddr sense_ptr; ! 262: /*------------------------------------longword boundary */ ! 263: struct scsi_sense_data scsi_sense; ! 264: /*------------------------------------longword boundary */ ! 265: struct bt_scat_gath scat_gath[BT_NSEG]; ! 266: /*------------------------------------longword boundary */ ! 267: struct bt_ccb *next; ! 268: /*------------------------------------longword boundary */ ! 269: struct scsi_xfer *xfer; /* the scsi_xfer for this cmd */ ! 270: /*------------------------------------longword boundary */ ! 271: struct bt_mbx_out *mbx; /* pointer to mail box */ ! 272: /*------------------------------------longword boundary */ ! 273: long int delta; /* difference from previous*/ ! 274: struct bt_ccb *later,*sooner; ! 275: int flags; ! 276: #define CCB_FREE 0 ! 277: #define CCB_ACTIVE 1 ! 278: #define CCB_ABORTED 2 ! 279: }; ! 280: ! 281: struct bt_ccb *bt_soonest = (struct bt_ccb *)0; ! 282: struct bt_ccb *bt_latest = (struct bt_ccb *)0; ! 283: long int bt_furtherest = 0; /* longest time in the timeout queue */ ! 284: /* ! 285: * opcode fields ! 286: */ ! 287: ! 288: #define BT_INITIATOR_CCB 0x00 /* SCSI Initiator CCB */ ! 289: #define BT_TARGET_CCB 0x01 /* SCSI Target CCB */ ! 290: #define BT_INIT_SCAT_GATH_CCB 0x02 /* SCSI Initiator with scattter gather*/ ! 291: #define BT_RESET_CCB 0x81 /* SCSI Bus reset */ ! 292: ! 293: ! 294: /* ! 295: * bt_ccb.host_stat values ! 296: */ ! 297: ! 298: #define BT_OK 0x00 /* cmd ok */ ! 299: #define BT_LINK_OK 0x0a /* Link cmd ok */ ! 300: #define BT_LINK_IT 0x0b /* Link cmd ok + int */ ! 301: #define BT_SEL_TIMEOUT 0x11 /* Selection time out */ ! 302: #define BT_OVER_UNDER 0x12 /* Data over/under run */ ! 303: #define BT_BUS_FREE 0x13 /* Bus dropped at unexpected time */ ! 304: #define BT_INV_BUS 0x14 /* Invalid bus phase/sequence */ ! 305: #define BT_BAD_MBO 0x15 /* Incorrect MBO cmd */ ! 306: #define BT_BAD_CCB 0x16 /* Incorrect ccb opcode */ ! 307: #define BT_BAD_LINK 0x17 /* Not same values of LUN for links */ ! 308: #define BT_INV_TARGET 0x18 /* Invalid target direction */ ! 309: #define BT_CCB_DUP 0x19 /* Duplicate CCB received */ ! 310: #define BT_INV_CCB 0x1a /* Invalid CCB or segment list */ ! 311: #define BT_ABORTED 42 /* pseudo value from driver */ ! 312: ! 313: ! 314: ! 315: struct bt_setup ! 316: { ! 317: u_char sync_neg:1; ! 318: u_char parity:1; ! 319: u_char :6; ! 320: u_char speed; ! 321: u_char bus_on; ! 322: u_char bus_off; ! 323: u_char num_mbx; ! 324: u_char mbx[4]; ! 325: struct ! 326: { ! 327: u_char offset:4; ! 328: u_char period:3; ! 329: u_char valid:1; ! 330: }sync[8]; ! 331: u_char disc_sts; ! 332: }; ! 333: ! 334: struct bt_config ! 335: { ! 336: u_char chan; ! 337: u_char intr; ! 338: u_char scsi_dev:3; ! 339: u_char :5; ! 340: }; ! 341: ! 342: #define INT9 0x01 ! 343: #define INT10 0x02 ! 344: #define INT11 0x04 ! 345: #define INT12 0x08 ! 346: #define INT14 0x20 ! 347: #define INT15 0x40 ! 348: ! 349: #define EISADMA 0x00 ! 350: #define CHAN0 0x01 ! 351: #define CHAN5 0x20 ! 352: #define CHAN6 0x40 ! 353: #define CHAN7 0x80 ! 354: ! 355: ! 356: ! 357: ! 358: #ifdef MACH ! 359: extern physaddr kvtophys(); ! 360: #define PHYSTOKV(x) phystokv(x) ! 361: #define KVTOPHYS(x) kvtophys(x) ! 362: #endif MACH ! 363: ! 364: #ifdef __386BSD__ ! 365: #define PHYSTOKV(x) (x | 0xFE000000) ! 366: #define KVTOPHYS(x) vtophys(x) ! 367: #endif __386BSD__ ! 368: ! 369: ! 370: ! 371: #define PAGESIZ 4096 ! 372: #define INVALIDATE_CACHE {asm volatile( ".byte 0x0F ;.byte 0x08" ); } ! 373: ! 374: ! 375: u_char bt_scratch_buf[256]; ! 376: #ifdef MACH ! 377: caddr_t bt_base[NBT]; /* base port for each board */ ! 378: #else MACH ! 379: short bt_base[NBT]; /* base port for each board */ ! 380: #endif MACH ! 381: struct bt_mbx bt_mbx[NBT]; ! 382: struct bt_ccb *bt_ccb_free[NBT]; ! 383: struct bt_ccb bt_ccb[NBT][BT_MBX_SIZE]; ! 384: struct scsi_xfer bt_scsi_xfer[NBT]; ! 385: struct isa_dev *btinfo[NBT]; ! 386: struct bt_ccb *bt_get_ccb(); ! 387: int bt_int[NBT]; ! 388: int bt_dma[NBT]; ! 389: int bt_scsi_dev[NBT]; ! 390: int bt_initialized[NBT]; ! 391: #if defined(OSF) ! 392: int bt_attached[NBT]; ! 393: #endif /* defined(OSF) */ ! 394: ! 395: /***********debug values *************/ ! 396: #define BT_SHOWCCBS 0x01 ! 397: #define BT_SHOWINTS 0x02 ! 398: #define BT_SHOWCMDS 0x04 ! 399: #define BT_SHOWMISC 0x08 ! 400: int bt_debug = 0; ! 401: ! 402: ! 403: int btprobe(), btattach(); ! 404: int btintr(); ! 405: ! 406: #ifdef MACH ! 407: struct isa_driver btdriver = { btprobe, 0, btattach, "bt", 0, 0, 0}; ! 408: int (*btintrs[])() = {btintr, 0}; ! 409: #endif MACH ! 410: ! 411: #ifdef __386BSD__ ! 412: struct isa_driver btdriver = { btprobe, btattach, "bt"}; ! 413: #endif __386BSD__ ! 414: ! 415: static int btunit = 0; ! 416: ! 417: #define bt_abortmbx(mbx) \ ! 418: (mbx)->cmd = BT_MBO_ABORT; \ ! 419: outb(BT_CMD_DATA_PORT, BT_START_SCSI); ! 420: #define bt_startmbx(mbx) \ ! 421: (mbx)->cmd = BT_MBO_START; \ ! 422: outb(BT_CMD_DATA_PORT, BT_START_SCSI); ! 423: ! 424: ! 425: ! 426: int bt_scsi_cmd(); ! 427: int bt_timeout(); ! 428: void btminphys(); ! 429: long int bt_adapter_info(); ! 430: ! 431: struct scsi_switch bt_switch = ! 432: { ! 433: bt_scsi_cmd, ! 434: btminphys, ! 435: 0, ! 436: 0, ! 437: bt_adapter_info, ! 438: 0,0,0 ! 439: }; ! 440: #define BT_CMD_TIMEOUT_FUDGE 200 /* multiplied to get Secs */ ! 441: #define BT_RESET_TIMEOUT 1000000 ! 442: #define BT_SCSI_TIMEOUT_FUDGE 20 /* divided by for mSecs */ ! 443: ! 444: ! 445: /***********************************************************************\ ! 446: * bt_cmd(unit,icnt, ocnt,wait, retval, opcode, args) * ! 447: * Activate Adapter command * ! 448: * icnt: number of args (outbound bytes written after opcode) * ! 449: * ocnt: number of expected returned bytes * ! 450: * wait: number of seconds to wait for response * ! 451: * retval: buffer where to place returned bytes * ! 452: * opcode: opcode BT_NOP, BT_MBX_INIT, BT_START_SCSI ... * ! 453: * args: parameters * ! 454: * * ! 455: * Performs an adapter command through the ports. Not to be confused * ! 456: * with a scsi command, which is read in via the dma * ! 457: * One of the adapter commands tells it to read in a scsi command * ! 458: \***********************************************************************/ ! 459: bt_cmd(unit,icnt, ocnt, wait,retval, opcode, args) ! 460: ! 461: u_char *retval; ! 462: unsigned opcode; ! 463: u_char args; ! 464: { ! 465: unsigned *ic = &opcode; ! 466: u_char oc; ! 467: register i; ! 468: int sts; ! 469: ! 470: /*******************************************************\ ! 471: * multiply the wait argument by a big constant * ! 472: * zero defaults to 1 * ! 473: \*******************************************************/ ! 474: if(!wait) ! 475: wait = BT_CMD_TIMEOUT_FUDGE * delaycount; ! 476: else ! 477: wait *= BT_CMD_TIMEOUT_FUDGE * delaycount; ! 478: /*******************************************************\ ! 479: * Wait for the adapter to go idle, unless it's one of * ! 480: * the commands which don't need this * ! 481: \*******************************************************/ ! 482: if (opcode != BT_MBX_INIT && opcode != BT_START_SCSI) ! 483: { ! 484: i = BT_CMD_TIMEOUT_FUDGE * delaycount; /* 1 sec?*/ ! 485: while (--i) ! 486: { ! 487: sts = inb(BT_CTRL_STAT_PORT); ! 488: if (sts & BT_IDLE) ! 489: { ! 490: break; ! 491: } ! 492: } ! 493: if (!i) ! 494: { ! 495: printf("bt_cmd: bt742a host not idle(0x%x)\n",sts); ! 496: return(ENXIO); ! 497: } ! 498: } ! 499: /*******************************************************\ ! 500: * Now that it is idle, if we expect output, preflush the* ! 501: * queue feeding to us. * ! 502: \*******************************************************/ ! 503: if (ocnt) ! 504: { ! 505: while((inb(BT_CTRL_STAT_PORT)) & BT_DF) ! 506: inb(BT_CMD_DATA_PORT); ! 507: } ! 508: ! 509: /*******************************************************\ ! 510: * Output the command and the number of arguments given * ! 511: * for each byte, first check the port is empty. * ! 512: \*******************************************************/ ! 513: icnt++; /* include the command */ ! 514: while (icnt--) ! 515: { ! 516: sts = inb(BT_CTRL_STAT_PORT); ! 517: for (i=0; i< wait; i++) ! 518: { ! 519: sts = inb(BT_CTRL_STAT_PORT); ! 520: if (!(sts & BT_CDF)) ! 521: break; ! 522: } ! 523: if (i >= wait) ! 524: { ! 525: printf("bt_cmd: bt742a cmd/data port full\n"); ! 526: outb(BT_CTRL_STAT_PORT, BT_SRST); ! 527: return(ENXIO); ! 528: } ! 529: outb(BT_CMD_DATA_PORT, (u_char)(*ic++)); ! 530: } ! 531: /*******************************************************\ ! 532: * If we expect input, loop that many times, each time, * ! 533: * looking for the data register to have valid data * ! 534: \*******************************************************/ ! 535: while (ocnt--) ! 536: { ! 537: sts = inb(BT_CTRL_STAT_PORT); ! 538: for (i=0; i< wait; i++) ! 539: { ! 540: sts = inb(BT_CTRL_STAT_PORT); ! 541: if (sts & BT_DF) ! 542: break; ! 543: } ! 544: if (i >= wait) ! 545: { ! 546: printf("bt_cmd: bt742a cmd/data port empty %d\n",ocnt); ! 547: return(ENXIO); ! 548: } ! 549: oc = inb(BT_CMD_DATA_PORT); ! 550: if (retval) ! 551: *retval++ = oc; ! 552: } ! 553: /*******************************************************\ ! 554: * Wait for the board to report a finised instruction * ! 555: \*******************************************************/ ! 556: i=BT_CMD_TIMEOUT_FUDGE * delaycount; /* 1 sec? */ ! 557: while (--i) ! 558: { ! 559: sts = inb(BT_INTR_PORT); ! 560: if (sts & BT_HACC) ! 561: { ! 562: break; ! 563: } ! 564: } ! 565: if (!i) ! 566: { ! 567: printf("bt_cmd: bt742a host not finished(0x%x)\n",sts); ! 568: return(ENXIO); ! 569: } ! 570: outb(BT_CTRL_STAT_PORT, BT_IRST); ! 571: return(0); ! 572: } ! 573: ! 574: /*******************************************************\ ! 575: * Check if the device can be found at the port given * ! 576: * and if so, set it up ready for further work * ! 577: * as an argument, takes the isa_dev structure from * ! 578: * autoconf.c * ! 579: \*******************************************************/ ! 580: ! 581: btprobe(dev) ! 582: struct isa_dev *dev; ! 583: { ! 584: /***********************************************\ ! 585: * find unit and check we have that many defined * ! 586: \***********************************************/ ! 587: int unit = btunit; ! 588: #if defined(OSF) ! 589: static ihandler_t bt_handler[NBT]; ! 590: static ihandler_id_t *bt_handler_id[NBT]; ! 591: register ihandler_t *chp = &bt_handler[unit];; ! 592: #endif /* defined(OSF) */ ! 593: ! 594: dev->dev_unit = unit; ! 595: bt_base[unit] = dev->dev_addr; ! 596: if(unit >= NBT) ! 597: { ! 598: printf("bt: unit number (%d) too high\n",unit); ! 599: return(0); ! 600: } ! 601: /***********************************************\ ! 602: * Try initialise a unit at this location * ! 603: * sets up dma and bus speed, loads bt_int[unit]* ! 604: \***********************************************/ ! 605: if (bt_init(unit) != 0) ! 606: { ! 607: return(0); ! 608: } ! 609: ! 610: /***********************************************\ ! 611: * If it's there, put in it's interrupt vectors * ! 612: \***********************************************/ ! 613: #ifdef MACH ! 614: #if defined(OSF) /* OSF */ ! 615: chp->ih_level = dev->dev_pic; ! 616: chp->ih_handler = dev->dev_intr[0]; ! 617: chp->ih_resolver = i386_resolver; ! 618: chp->ih_rdev = dev; ! 619: chp->ih_stats.intr_type = INTR_DEVICE; ! 620: chp->ih_stats.intr_cnt = 0; ! 621: chp->ih_hparam[0].intparam = unit; ! 622: if ((bt_handler_id[unit] = handler_add(chp)) != NULL) ! 623: handler_enable(bt_handler_id[unit]); ! 624: else ! 625: panic("Unable to add bt interrupt handler"); ! 626: #else /* CMU */ ! 627: dev->dev_pic = bt_int[unit]; ! 628: take_dev_irq(dev); ! 629: #endif /* !defined(OSF) */ ! 630: printf("port=%x spl=%d\n", dev->dev_addr, dev->dev_spl); ! 631: #endif MACH ! 632: #ifdef __386BSD__ /* 386BSD */ ! 633: dev->id_irq = (1 << bt_int[unit]); ! 634: dev->id_drq = bt_dma[unit]; ! 635: printf("\n **"); ! 636: #endif __386BSD__ ! 637: ! 638: btunit++; ! 639: return(1); ! 640: } ! 641: ! 642: /***********************************************\ ! 643: * Attach all the sub-devices we can find * ! 644: \***********************************************/ ! 645: btattach(dev) ! 646: struct isa_dev *dev; ! 647: { ! 648: int unit = dev->dev_unit; ! 649: ! 650: ! 651: #ifdef __386BSD__ ! 652: printf(" probing for scsi devices**\n"); ! 653: #endif __386BSD__ ! 654: ! 655: /***********************************************\ ! 656: * ask the adapter what subunits are present * ! 657: \***********************************************/ ! 658: scsi_attachdevs( unit, bt_scsi_dev[unit], &bt_switch); ! 659: #if defined(OSF) ! 660: bt_attached[unit]=1; ! 661: #endif /* defined(OSF) */ ! 662: if(!unit) /* only one for all boards */ ! 663: { ! 664: bt_timeout(0); ! 665: } ! 666: #ifdef __386BSD__ ! 667: printf("bt%d",unit); ! 668: #endif __386BSD__ ! 669: return; ! 670: } ! 671: ! 672: /***********************************************\ ! 673: * Return some information to the caller about * ! 674: * the adapter and it's capabilities * ! 675: \***********************************************/ ! 676: long int bt_adapter_info(unit) ! 677: int unit; ! 678: { ! 679: return(2); /* 2 outstanding requests at a time per device */ ! 680: } ! 681: ! 682: /***********************************************\ ! 683: * Catch an interrupt from the adaptor * ! 684: \***********************************************/ ! 685: btintr(unit) ! 686: { ! 687: struct bt_ccb *ccb; ! 688: unsigned char stat; ! 689: register i; ! 690: ! 691: if(scsi_debug & PRINTROUTINES) ! 692: printf("btintr "); ! 693: /***********************************************\ ! 694: * First acknowlege the interrupt, Then if it's * ! 695: * not telling about a completed operation * ! 696: * just return. * ! 697: \***********************************************/ ! 698: stat = inb(BT_INTR_PORT); ! 699: outb(BT_CTRL_STAT_PORT, BT_IRST); ! 700: if(scsi_debug & TRACEINTERRUPTS) ! 701: printf("int = 0x%x ",stat); ! 702: if (! (stat & BT_MBIF)) ! 703: return 1; ! 704: if(scsi_debug & TRACEINTERRUPTS) ! 705: printf("mbxi "); ! 706: #if defined(OSF) ! 707: if (!bt_attached[unit]) ! 708: { ! 709: return(1); ! 710: } ! 711: #endif /* defined(OSF) */ ! 712: /***********************************************\ ! 713: * If it IS then process the competed operation * ! 714: \***********************************************/ ! 715: for (i = 0; i < BT_MBX_SIZE; i++) ! 716: { ! 717: if (bt_mbx[unit].mbi[i].stat != BT_MBI_FREE) ! 718: { ! 719: ccb = (struct bt_ccb *)PHYSTOKV( ! 720: (bt_mbx[unit].mbi[i].ccb_addr)); ! 721: if((bt_debug & BT_SHOWCCBS) && ccb) ! 722: printf("<int ccb(%x)>",ccb); ! 723: if((stat = bt_mbx[unit].mbi[i].stat) != BT_MBI_OK) ! 724: { ! 725: switch(stat) ! 726: { ! 727: case BT_MBI_ABORT: ! 728: if(bt_debug & BT_SHOWMISC) ! 729: printf("abort "); ! 730: ccb->host_stat = BT_ABORTED; ! 731: break; ! 732: ! 733: case BT_MBI_UNKNOWN: ! 734: ccb = (struct bt_ccb *)0; ! 735: if(bt_debug & BT_SHOWMISC) ! 736: printf("unknown ccb for abort"); ! 737: break; ! 738: ! 739: case BT_MBI_ERROR: ! 740: break; ! 741: ! 742: default: ! 743: panic("Impossible mbxi status"); ! 744: ! 745: } ! 746: if((bt_debug & BT_SHOWCMDS ) && ccb) ! 747: { ! 748: u_char *cp; ! 749: cp = ccb->scsi_cmd; ! 750: printf("op=%x %x %x %x %x %x\n", ! 751: cp[0], cp[1], cp[2], ! 752: cp[3], cp[4], cp[5]); ! 753: printf("stat %x for mbi[%d]\n" ! 754: , bt_mbx[unit].mbi[i].stat, i); ! 755: printf("addr = 0x%x\n", ccb); ! 756: } ! 757: } ! 758: if(ccb) ! 759: { ! 760: bt_remove_timeout(ccb); ! 761: bt_done(unit,ccb); ! 762: } ! 763: bt_mbx[unit].mbi[i].stat = BT_MBI_FREE; ! 764: } ! 765: } ! 766: return(1); ! 767: } ! 768: ! 769: /***********************************************\ ! 770: * A ccb (and hence a mbx-out is put onto the * ! 771: * free list. * ! 772: \***********************************************/ ! 773: bt_free_ccb(unit,ccb, flags) ! 774: struct bt_ccb *ccb; ! 775: { ! 776: unsigned int opri; ! 777: ! 778: if(scsi_debug & PRINTROUTINES) ! 779: printf("ccb%d(0x%x)> ",unit,flags); ! 780: if (!(flags & SCSI_NOMASK)) ! 781: opri = splbio(); ! 782: ! 783: ccb->next = bt_ccb_free[unit]; ! 784: bt_ccb_free[unit] = ccb; ! 785: ccb->flags = CCB_FREE; ! 786: /***********************************************\ ! 787: * If there were none, wake abybody waiting for * ! 788: * one to come free, starting with queued entries* ! 789: \***********************************************/ ! 790: if (!ccb->next) { ! 791: wakeup(&bt_ccb_free[unit]); ! 792: } ! 793: if (!(flags & SCSI_NOMASK)) ! 794: splx(opri); ! 795: } ! 796: ! 797: /***********************************************\ ! 798: * Get a free ccb (and hence mbox-out entry) * ! 799: \***********************************************/ ! 800: struct bt_ccb * ! 801: bt_get_ccb(unit,flags) ! 802: { ! 803: unsigned opri; ! 804: struct bt_ccb *rc; ! 805: ! 806: if(scsi_debug & PRINTROUTINES) ! 807: printf("<ccb%d(0x%x) ",unit,flags); ! 808: if (!(flags & SCSI_NOMASK)) ! 809: opri = splbio(); ! 810: /***********************************************\ ! 811: * If we can and have to, sleep waiting for one * ! 812: * to come free * ! 813: \***********************************************/ ! 814: while ((!(rc = bt_ccb_free[unit])) && (!(flags & SCSI_NOSLEEP))) ! 815: { ! 816: sleep(&bt_ccb_free[unit], PRIBIO); ! 817: } ! 818: if (rc) ! 819: { ! 820: bt_ccb_free[unit] = rc->next; ! 821: rc->flags = CCB_ACTIVE; ! 822: } ! 823: if (!(flags & SCSI_NOMASK)) ! 824: splx(opri); ! 825: return(rc); ! 826: } ! 827: ! 828: ! 829: /***********************************************\ ! 830: * We have a ccb which has been processed by the * ! 831: * adaptor, now we look to see how the operation * ! 832: * went. Wake up the owner if waiting * ! 833: \***********************************************/ ! 834: bt_done(unit,ccb) ! 835: struct bt_ccb *ccb; ! 836: { ! 837: struct scsi_sense_data *s1,*s2; ! 838: struct scsi_xfer *xs = ccb->xfer; ! 839: ! 840: if(scsi_debug & (PRINTROUTINES | TRACEINTERRUPTS)) ! 841: printf("bt_done "); ! 842: /***********************************************\ ! 843: * Otherwise, put the results of the operation * ! 844: * into the xfer and call whoever started it * ! 845: \***********************************************/ ! 846: if ( ( ccb->host_stat != BT_OK ! 847: || ccb->target_stat != SCSI_OK) ! 848: && (!(xs->flags & SCSI_ERR_OK))) ! 849: { ! 850: ! 851: s1 = &(ccb->scsi_sense); ! 852: s2 = &(xs->sense); ! 853: ! 854: if(ccb->host_stat) ! 855: { ! 856: switch(ccb->host_stat) ! 857: { ! 858: case BT_ABORTED: /* No response */ ! 859: case BT_SEL_TIMEOUT: /* No response */ ! 860: if (bt_debug & BT_SHOWMISC) ! 861: { ! 862: printf("timeout reported back\n"); ! 863: } ! 864: xs->error = XS_TIMEOUT; ! 865: break; ! 866: default: /* Other scsi protocol messes */ ! 867: xs->error = XS_DRIVER_STUFFUP; ! 868: if (bt_debug & BT_SHOWMISC) ! 869: { ! 870: printf("unexpected host_stat: %x\n", ! 871: ccb->host_stat); ! 872: } ! 873: } ! 874: ! 875: } ! 876: else ! 877: { ! 878: switch(ccb->target_stat) ! 879: { ! 880: case 0x02: ! 881: /* structure copy!!!!!*/ ! 882: *s2=*s1; ! 883: xs->error = XS_SENSE; ! 884: break; ! 885: case 0x08: ! 886: xs->error = XS_BUSY; ! 887: break; ! 888: default: ! 889: if (bt_debug & BT_SHOWMISC) ! 890: { ! 891: printf("unexpected target_stat: %x\n", ! 892: ccb->target_stat); ! 893: } ! 894: xs->error = XS_DRIVER_STUFFUP; ! 895: } ! 896: } ! 897: } ! 898: else /* All went correctly OR errors expected */ ! 899: { ! 900: xs->resid = 0; ! 901: } ! 902: xs->flags |= ITSDONE; ! 903: bt_free_ccb(unit,ccb, xs->flags); ! 904: if(xs->when_done) ! 905: (*(xs->when_done))(xs->done_arg,xs->done_arg2); ! 906: } ! 907: ! 908: /***********************************************\ ! 909: * Start the board, ready for normal operation * ! 910: \***********************************************/ ! 911: bt_init(unit) ! 912: int unit; ! 913: { ! 914: unsigned char ad[4]; ! 915: volatile int i,sts; ! 916: struct bt_config conf; ! 917: ! 918: /***********************************************\ ! 919: * reset board, If it doesn't respond, assume * ! 920: * that it's not there.. good for the probe * ! 921: \***********************************************/ ! 922: ! 923: outb(BT_CTRL_STAT_PORT, BT_HRST|BT_SRST); ! 924: ! 925: for (i=0; i < BT_RESET_TIMEOUT; i++) ! 926: { ! 927: sts = inb(BT_CTRL_STAT_PORT) ; ! 928: if ( sts == (BT_IDLE | BT_INIT)) ! 929: break; ! 930: } ! 931: if (i >= BT_RESET_TIMEOUT) ! 932: { ! 933: if (bt_debug & BT_SHOWMISC) ! 934: printf("bt_init: No answer from bt742a board\n"); ! 935: return(ENXIO); ! 936: } ! 937: ! 938: /***********************************************\ ! 939: * Assume we have a board at this stage * ! 940: * setup dma channel from jumpers and save int * ! 941: * level * ! 942: \***********************************************/ ! 943: #ifdef __386BSD__ ! 944: printf("bt%d reading board settings, ",unit); ! 945: #define PRNT(x) ! 946: #else __386BSD__ ! 947: printf("bt%d:",unit); ! 948: #define PRNT(x) printf(x) ! 949: #endif __386BSD__ ! 950: ! 951: bt_cmd(unit,0, sizeof(conf), 0 ,&conf, BT_CONF_GET); ! 952: switch(conf.chan) ! 953: { ! 954: case EISADMA: ! 955: bt_dma[unit] = -1; ! 956: PRNT("eisa dma "); ! 957: break; ! 958: case CHAN0: ! 959: outb(0x0b, 0x0c); ! 960: outb(0x0a, 0x00); ! 961: bt_dma[unit] = 0; ! 962: PRNT("dma=0 "); ! 963: break; ! 964: case CHAN5: ! 965: outb(0xd6, 0xc1); ! 966: outb(0xd4, 0x01); ! 967: bt_dma[unit] = 5; ! 968: PRNT("dma=5 "); ! 969: break; ! 970: case CHAN6: ! 971: outb(0xd6, 0xc2); ! 972: outb(0xd4, 0x02); ! 973: bt_dma[unit] = 6; ! 974: PRNT("dma=6 "); ! 975: break; ! 976: case CHAN7: ! 977: outb(0xd6, 0xc3); ! 978: outb(0xd4, 0x03); ! 979: bt_dma[unit] = 7; ! 980: PRNT("dma=7 "); ! 981: break; ! 982: default: ! 983: printf("illegal dma setting %x\n",conf.chan); ! 984: return(EIO); ! 985: } ! 986: switch(conf.intr) ! 987: { ! 988: case INT9: ! 989: bt_int[unit] = 9; ! 990: PRNT("int=9 "); ! 991: break; ! 992: case INT10: ! 993: bt_int[unit] = 10; ! 994: PRNT("int=10 "); ! 995: break; ! 996: case INT11: ! 997: bt_int[unit] = 11; ! 998: PRNT("int=11 "); ! 999: break; ! 1000: case INT12: ! 1001: bt_int[unit] = 12; ! 1002: PRNT("int=12 "); ! 1003: break; ! 1004: case INT14: ! 1005: bt_int[unit] = 14; ! 1006: PRNT("int=14 "); ! 1007: break; ! 1008: case INT15: ! 1009: bt_int[unit] = 15; ! 1010: PRNT("int=15 "); ! 1011: break; ! 1012: default: ! 1013: printf("illegal int setting\n"); ! 1014: return(EIO); ! 1015: } ! 1016: /* who are we on the scsi bus */ ! 1017: bt_scsi_dev[unit] = conf.scsi_dev; ! 1018: /***********************************************\ ! 1019: * Initialize mail box * ! 1020: \***********************************************/ ! 1021: ! 1022: *((physaddr *)ad) = KVTOPHYS(&bt_mbx[unit]); ! 1023: bt_cmd(unit,5, 0, 0, 0, BT_MBX_INIT_EXTENDED ! 1024: , BT_MBX_SIZE ! 1025: , ad[0] ! 1026: , ad[1] ! 1027: , ad[2] ! 1028: , ad[3]); ! 1029: ! 1030: /***********************************************\ ! 1031: * link the ccb's with the mbox-out entries and * ! 1032: * into a free-list * ! 1033: \***********************************************/ ! 1034: for (i=0; i < BT_MBX_SIZE; i++) { ! 1035: bt_ccb[unit][i].next = bt_ccb_free[unit]; ! 1036: bt_ccb_free[unit] = &bt_ccb[unit][i]; ! 1037: bt_ccb_free[unit]->flags = CCB_FREE; ! 1038: bt_ccb_free[unit]->mbx = &bt_mbx[unit].mbo[i]; ! 1039: bt_mbx[unit].mbo[i].ccb_addr = KVTOPHYS(bt_ccb_free[unit]) ; ! 1040: } ! 1041: ! 1042: /***********************************************\ ! 1043: * Note that we are going and return (to probe) * ! 1044: \***********************************************/ ! 1045: bt_initialized[unit]++; ! 1046: return( 0 ); ! 1047: } ! 1048: ! 1049: ! 1050: #ifndef min ! 1051: #define min(x,y) (x < y ? x : y) ! 1052: #endif min ! 1053: ! 1054: ! 1055: void btminphys(bp) ! 1056: struct buf *bp; ! 1057: { ! 1058: #ifdef MACH ! 1059: #if !defined(OSF) ! 1060: bp->b_flags |= B_NPAGES; /* can support scat/gather */ ! 1061: #endif /* defined(OSF) */ ! 1062: #endif MACH ! 1063: if(bp->b_bcount > ((BT_NSEG-1) * PAGESIZ)) ! 1064: { ! 1065: bp->b_bcount = ((BT_NSEG-1) * PAGESIZ); ! 1066: } ! 1067: } ! 1068: ! 1069: /***********************************************\ ! 1070: * start a scsi operation given the command and * ! 1071: * the data address. Also needs the unit, target * ! 1072: * and lu * ! 1073: \***********************************************/ ! 1074: int bt_scsi_cmd(xs) ! 1075: struct scsi_xfer *xs; ! 1076: { ! 1077: struct scsi_sense_data *s1,*s2; ! 1078: struct bt_ccb *ccb; ! 1079: struct bt_scat_gath *sg; ! 1080: int seg; /* scatter gather seg being worked on */ ! 1081: int i = 0; ! 1082: int rc = 0; ! 1083: int thiskv; ! 1084: physaddr thisphys,nextphys; ! 1085: int unit =xs->adapter; ! 1086: int bytes_this_seg,bytes_this_page,datalen,flags; ! 1087: struct iovec *iovp; ! 1088: ! 1089: if(scsi_debug & PRINTROUTINES) ! 1090: printf("bt_scsi_cmd "); ! 1091: /***********************************************\ ! 1092: * get a ccb (mbox-out) to use. If the transfer * ! 1093: * is from a buf (possibly from interrupt time) * ! 1094: * then we can't allow it to sleep * ! 1095: \***********************************************/ ! 1096: flags = xs->flags; ! 1097: if(xs->bp) flags |= (SCSI_NOSLEEP); /* just to be sure */ ! 1098: if(flags & ITSDONE) ! 1099: { ! 1100: printf("Already done?"); ! 1101: xs->flags &= ~ITSDONE; ! 1102: } ! 1103: if(!(flags & INUSE)) ! 1104: { ! 1105: printf("Not in use?"); ! 1106: xs->flags |= INUSE; ! 1107: } ! 1108: if (!(ccb = bt_get_ccb(unit,flags))) ! 1109: { ! 1110: xs->error = XS_DRIVER_STUFFUP; ! 1111: return(TRY_AGAIN_LATER); ! 1112: } ! 1113: ! 1114: if(bt_debug & BT_SHOWCCBS) ! 1115: printf("<start ccb(%x)>",ccb); ! 1116: if (ccb->mbx->cmd != BT_MBO_FREE) ! 1117: printf("MBO not free\n"); ! 1118: ! 1119: /***********************************************\ ! 1120: * Put all the arguments for the xfer in the ccb * ! 1121: \***********************************************/ ! 1122: ccb->xfer = xs; ! 1123: if(flags & SCSI_RESET) ! 1124: { ! 1125: ccb->opcode = BT_RESET_CCB; ! 1126: } ! 1127: else ! 1128: { ! 1129: /* can't use S/G if zero length */ ! 1130: ccb->opcode = (xs->datalen? ! 1131: BT_INIT_SCAT_GATH_CCB ! 1132: :BT_INITIATOR_CCB); ! 1133: } ! 1134: ccb->target = xs->targ;; ! 1135: ccb->data_out = 0; ! 1136: ccb->data_in = 0; ! 1137: ccb->lun = xs->lu; ! 1138: ccb->scsi_cmd_length = xs->cmdlen; ! 1139: ccb->sense_ptr = KVTOPHYS(&(ccb->scsi_sense)); ! 1140: ccb->req_sense_length = sizeof(ccb->scsi_sense); ! 1141: ! 1142: if((xs->datalen) && (!(flags & SCSI_RESET))) ! 1143: { /* can use S/G only if not zero length */ ! 1144: ccb->data_addr = KVTOPHYS(ccb->scat_gath); ! 1145: sg = ccb->scat_gath ; ! 1146: seg = 0; ! 1147: if(flags & SCSI_DATA_UIO) ! 1148: { ! 1149: iovp = ((struct uio *)xs->data)->uio_iov; ! 1150: datalen = ((struct uio *)xs->data)->uio_iovcnt; ! 1151: xs->datalen = 0; ! 1152: while ((datalen) && (seg < BT_NSEG)) ! 1153: { ! 1154: sg->seg_addr = (physaddr)iovp->iov_base; ! 1155: xs->datalen += sg->seg_len = iovp->iov_len; ! 1156: if(scsi_debug & SHOWSCATGATH) ! 1157: printf("(0x%x@0x%x)" ! 1158: ,iovp->iov_len ! 1159: ,iovp->iov_base); ! 1160: sg++; ! 1161: iovp++; ! 1162: seg++; ! 1163: datalen--; ! 1164: } ! 1165: } ! 1166: else ! 1167: { ! 1168: /***********************************************\ ! 1169: * Set up the scatter gather block * ! 1170: \***********************************************/ ! 1171: ! 1172: if(scsi_debug & SHOWSCATGATH) ! 1173: printf("%d @0x%x:- ",xs->datalen,xs->data); ! 1174: datalen = xs->datalen; ! 1175: thiskv = (int)xs->data; ! 1176: thisphys = KVTOPHYS(thiskv); ! 1177: ! 1178: while ((datalen) && (seg < BT_NSEG)) ! 1179: { ! 1180: bytes_this_seg = 0; ! 1181: ! 1182: /* put in the base address */ ! 1183: sg->seg_addr = thisphys; ! 1184: ! 1185: if(scsi_debug & SHOWSCATGATH) ! 1186: printf("0x%x",thisphys); ! 1187: ! 1188: /* do it at least once */ ! 1189: nextphys = thisphys; ! 1190: while ((datalen) && (thisphys == nextphys)) ! 1191: /*********************************************\ ! 1192: * This page is contiguous (physically) with * ! 1193: * the the last, just extend the length * ! 1194: \*********************************************/ ! 1195: { ! 1196: /* how far to the end of the page */ ! 1197: nextphys= (thisphys & (~(PAGESIZ - 1))) ! 1198: + PAGESIZ; ! 1199: bytes_this_page = nextphys - thisphys; ! 1200: /**** or the data ****/ ! 1201: bytes_this_page = min(bytes_this_page ! 1202: ,datalen); ! 1203: bytes_this_seg += bytes_this_page; ! 1204: datalen -= bytes_this_page; ! 1205: ! 1206: /* get more ready for the next page */ ! 1207: thiskv = (thiskv & (~(PAGESIZ - 1))) ! 1208: + PAGESIZ; ! 1209: if(datalen) ! 1210: thisphys = KVTOPHYS(thiskv); ! 1211: } ! 1212: /********************************************\ ! 1213: * next page isn't contiguous, finish the seg * ! 1214: \********************************************/ ! 1215: if(scsi_debug & SHOWSCATGATH) ! 1216: printf("(0x%x)",bytes_this_seg); ! 1217: sg->seg_len = bytes_this_seg; ! 1218: sg++; ! 1219: seg++; ! 1220: } ! 1221: } /*end of iov/kv decision */ ! 1222: ccb->data_length = seg * sizeof(struct bt_scat_gath); ! 1223: if(scsi_debug & SHOWSCATGATH) ! 1224: printf("\n"); ! 1225: if (datalen) ! 1226: { /* there's still data, must have run out of segs! */ ! 1227: printf("bt_scsi_cmd%d: more than %d DMA segs\n", ! 1228: unit,BT_NSEG); ! 1229: xs->error = XS_DRIVER_STUFFUP; ! 1230: bt_free_ccb(unit,ccb,flags); ! 1231: return(HAD_ERROR); ! 1232: } ! 1233: ! 1234: } ! 1235: else ! 1236: { /* No data xfer, use non S/G values */ ! 1237: ccb->data_addr = (physaddr)0; ! 1238: ccb->data_length = 0; ! 1239: } ! 1240: ccb->link_id = 0; ! 1241: ccb->link_addr = (physaddr)0; ! 1242: /***********************************************\ ! 1243: * Put the scsi command in the ccb and start it * ! 1244: \***********************************************/ ! 1245: if(!(flags & SCSI_RESET)) ! 1246: { ! 1247: bcopy(xs->cmd, ccb->scsi_cmd, ccb->scsi_cmd_length); ! 1248: } ! 1249: if(scsi_debug & SHOWCOMMANDS) ! 1250: { ! 1251: u_char *b = ccb->scsi_cmd; ! 1252: if(!(flags & SCSI_RESET)) ! 1253: { ! 1254: int i = 0; ! 1255: printf("bt%d:%d:%d-" ! 1256: ,unit ! 1257: ,ccb->target ! 1258: ,ccb->lun); ! 1259: while(i < ccb->scsi_cmd_length ) ! 1260: { ! 1261: if(i) printf(","); ! 1262: printf("%x",b[i++]); ! 1263: } ! 1264: printf("-\n"); ! 1265: } ! 1266: else ! 1267: { ! 1268: printf("bt%d:%d:%d-RESET- " ! 1269: ,unit ! 1270: ,ccb->target ! 1271: ,ccb->lun ! 1272: ); ! 1273: } ! 1274: } ! 1275: bt_startmbx(ccb->mbx); ! 1276: /***********************************************\ ! 1277: * Usually return SUCCESSFULLY QUEUED * ! 1278: \***********************************************/ ! 1279: if(scsi_debug & TRACEINTERRUPTS) ! 1280: printf("cmd_sent "); ! 1281: if (!(flags & SCSI_NOMASK)) ! 1282: { ! 1283: bt_add_timeout(ccb,xs->timeout); ! 1284: return(SUCCESSFULLY_QUEUED); ! 1285: } ! 1286: /***********************************************\ ! 1287: * If we can't use interrupts, poll on completion* ! 1288: \***********************************************/ ! 1289: { ! 1290: int done = 0; ! 1291: int count = delaycount * xs->timeout / BT_SCSI_TIMEOUT_FUDGE; ! 1292: if(scsi_debug & TRACEINTERRUPTS) ! 1293: printf("wait "); ! 1294: while((!done) && count) ! 1295: { ! 1296: i=0; ! 1297: while ( (!done) && i<BT_MBX_SIZE) ! 1298: { ! 1299: if ((bt_mbx[unit].mbi[i].stat != BT_MBI_FREE ) ! 1300: && (PHYSTOKV(bt_mbx[unit].mbi[i].ccb_addr) ! 1301: == (int)ccb)) ! 1302: { ! 1303: bt_mbx[unit].mbi[i].stat = BT_MBI_FREE; ! 1304: bt_done(unit,ccb); ! 1305: done++; ! 1306: } ! 1307: i++; ! 1308: } ! 1309: count--; ! 1310: } ! 1311: if (!count) ! 1312: { ! 1313: if (!(xs->flags & SCSI_SILENT)) ! 1314: printf("cmd fail\n"); ! 1315: bt_abortmbx(ccb->mbx); ! 1316: count = delaycount * 2000 / BT_SCSI_TIMEOUT_FUDGE; ! 1317: while((!done) && count) ! 1318: { ! 1319: i=0; ! 1320: while ( (!done) && i<BT_MBX_SIZE) ! 1321: { ! 1322: if ((bt_mbx[unit].mbi[i].stat != BT_MBI_FREE ) ! 1323: && (PHYSTOKV((bt_mbx[unit].mbi[i].ccb_addr) ! 1324: == (int)ccb))) ! 1325: { ! 1326: bt_mbx[unit].mbi[i].stat = BT_MBI_FREE; ! 1327: bt_done(unit,ccb); ! 1328: done++; ! 1329: } ! 1330: i++; ! 1331: } ! 1332: count--; ! 1333: } ! 1334: if(!count) ! 1335: { ! 1336: printf("abort failed in wait\n"); ! 1337: ccb->mbx->cmd = BT_MBO_FREE; ! 1338: } ! 1339: bt_free_ccb(unit,ccb,flags); ! 1340: btintr(unit); ! 1341: xs->error = XS_DRIVER_STUFFUP; ! 1342: return(HAD_ERROR); ! 1343: } ! 1344: btintr(unit); ! 1345: if(xs->error) return(HAD_ERROR); ! 1346: return(COMPLETE); ! 1347: } ! 1348: } ! 1349: ! 1350: /* ! 1351: * +----------+ +----------+ +----------+ ! 1352: * bt_soonest--->| later |---->| later|---->| later|--->0 ! 1353: * | [Delta] | | [Delta] | | [Delta] | ! 1354: * 0<-----|sooner |<----|sooner |<----|sooner |<----bt_latest ! 1355: * +----------+ +----------+ +----------+ ! 1356: * ! 1357: * bt_furtherest = sum(Delta[1..n]) ! 1358: */ ! 1359: bt_add_timeout(ccb,time) ! 1360: struct bt_ccb *ccb; ! 1361: int time; ! 1362: { ! 1363: int timeprev; ! 1364: struct bt_ccb *prev; ! 1365: int s = splbio(); ! 1366: ! 1367: if(prev = bt_latest) /* yes, an assign */ ! 1368: { ! 1369: timeprev = bt_furtherest; ! 1370: } ! 1371: else ! 1372: { ! 1373: timeprev = 0; ! 1374: } ! 1375: while(prev && (timeprev > time)) ! 1376: { ! 1377: timeprev -= prev->delta; ! 1378: prev = prev->sooner; ! 1379: } ! 1380: if(prev) ! 1381: { ! 1382: ccb->delta = time - timeprev; ! 1383: if( ccb->later = prev->later) /* yes an assign */ ! 1384: { ! 1385: ccb->later->sooner = ccb; ! 1386: ccb->later->delta -= ccb->delta; ! 1387: } ! 1388: else ! 1389: { ! 1390: bt_furtherest = time; ! 1391: bt_latest = ccb; ! 1392: } ! 1393: ccb->sooner = prev; ! 1394: prev->later = ccb; ! 1395: } ! 1396: else ! 1397: { ! 1398: if( ccb->later = bt_soonest) /* yes, an assign*/ ! 1399: { ! 1400: ccb->later->sooner = ccb; ! 1401: ccb->later->delta -= time; ! 1402: } ! 1403: else ! 1404: { ! 1405: bt_furtherest = time; ! 1406: bt_latest = ccb; ! 1407: } ! 1408: ccb->delta = time; ! 1409: ccb->sooner = (struct bt_ccb *)0; ! 1410: bt_soonest = ccb; ! 1411: } ! 1412: splx(s); ! 1413: } ! 1414: ! 1415: bt_remove_timeout(ccb) ! 1416: struct bt_ccb *ccb; ! 1417: { ! 1418: int s = splbio(); ! 1419: ! 1420: if(ccb->sooner) ! 1421: { ! 1422: ccb->sooner->later = ccb->later; ! 1423: } ! 1424: else ! 1425: { ! 1426: bt_soonest = ccb->later; ! 1427: } ! 1428: if(ccb->later) ! 1429: { ! 1430: ccb->later->sooner = ccb->sooner; ! 1431: ccb->later->delta += ccb->delta; ! 1432: } ! 1433: else ! 1434: { ! 1435: bt_latest = ccb->sooner; ! 1436: bt_furtherest -= ccb->delta; ! 1437: } ! 1438: ccb->sooner = ccb->later = (struct bt_ccb *)0; ! 1439: splx(s); ! 1440: } ! 1441: ! 1442: ! 1443: extern int hz; ! 1444: #define ONETICK 500 /* milliseconds */ ! 1445: #define SLEEPTIME ((hz * 1000) / ONETICK) ! 1446: bt_timeout(arg) ! 1447: int arg; ! 1448: { ! 1449: struct bt_ccb *ccb; ! 1450: int unit; ! 1451: int s = splbio(); ! 1452: ! 1453: while( ccb = bt_soonest ) ! 1454: { ! 1455: if(ccb->delta <= ONETICK) ! 1456: /***********************************************\ ! 1457: * It has timed out, we need to do some work * ! 1458: \***********************************************/ ! 1459: { ! 1460: unit = ccb->xfer->adapter; ! 1461: printf("bt%d:%d device timed out\n",unit ! 1462: ,ccb->xfer->targ); ! 1463: if(bt_debug & BT_SHOWCCBS) ! 1464: tfs_print_active_ccbs(); ! 1465: ! 1466: /***************************************\ ! 1467: * Unlink it from the queue * ! 1468: \***************************************/ ! 1469: bt_remove_timeout(ccb); ! 1470: ! 1471: /***************************************\ ! 1472: * If The ccb's mbx is not free, then * ! 1473: * the board has gone south * ! 1474: \***************************************/ ! 1475: if(ccb->mbx->cmd != BT_MBO_FREE) ! 1476: { ! 1477: printf("bt%d not taking commands!\n" ! 1478: ,unit); ! 1479: Debugger(); ! 1480: } ! 1481: /***************************************\ ! 1482: * If it has been through before, then * ! 1483: * a previous abort has failed, don't * ! 1484: * try abort again * ! 1485: \***************************************/ ! 1486: if(ccb->flags == CCB_ABORTED) /* abort timed out */ ! 1487: { ! 1488: printf("AGAIN"); ! 1489: ccb->xfer->retries = 0; /* I MEAN IT ! */ ! 1490: ccb->host_stat = BT_ABORTED; ! 1491: bt_done(unit,ccb); ! 1492: } ! 1493: else /* abort the operation that has timed out */ ! 1494: { ! 1495: printf("\n"); ! 1496: bt_abortmbx(ccb->mbx); ! 1497: /* 2 secs for the abort */ ! 1498: bt_add_timeout(ccb,2000 + ONETICK); ! 1499: ccb->flags = CCB_ABORTED; ! 1500: } ! 1501: } ! 1502: else ! 1503: /***********************************************\ ! 1504: * It has not timed out, adjust and leave * ! 1505: \***********************************************/ ! 1506: { ! 1507: ccb->delta -= ONETICK; ! 1508: bt_furtherest -= ONETICK; ! 1509: break; ! 1510: } ! 1511: } ! 1512: splx(s); ! 1513: timeout(bt_timeout,arg,SLEEPTIME); ! 1514: } ! 1515: ! 1516: tfs_print_ccb(ccb) ! 1517: struct bt_ccb *ccb; ! 1518: { ! 1519: printf("ccb:%x op:%x cmdlen:%d senlen:%d\n" ! 1520: ,ccb ! 1521: ,ccb->opcode ! 1522: ,ccb->scsi_cmd_length ! 1523: ,ccb->req_sense_length); ! 1524: printf(" datlen:%d hstat:%x tstat:%x delta:%d flags:%x\n" ! 1525: ,ccb->data_length ! 1526: ,ccb->host_stat ! 1527: ,ccb->target_stat ! 1528: ,ccb->delta ! 1529: ,ccb->flags); ! 1530: } ! 1531: ! 1532: tfs_print_active_ccbs() ! 1533: { ! 1534: struct bt_ccb *ccb; ! 1535: ccb = bt_soonest; ! 1536: ! 1537: while(ccb) ! 1538: { ! 1539: tfs_print_ccb(ccb); ! 1540: ccb = ccb->later; ! 1541: } ! 1542: printf("Furtherest = %d\n",bt_furtherest); ! 1543: }
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