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1.1 ! root 1: /* ! 2: * (Mostly) 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: * Ported to run under 386BSD by Julian Elischer ([email protected]) Sept 1992 ! 26: */ ! 27: ! 28: /* ! 29: * HISTORY ! 30: * $Log: aha1542.c,v $ ! 31: * Revision 1.3 1993/04/10 12:05:04 glass ! 32: * fixed to be compliant, subservient, and to take advantage of the newly ! 33: * hacked config(8) ! 34: * ! 35: * Revision 1.2 1993/04/08 08:26:46 deraadt ! 36: * dmesg output at boottime now tries to print out information as ! 37: * soon as it is available. The output looks much more like Sunos. ! 38: * ! 39: * Revision 1.1 1993/03/21 18:09:54 cgd ! 40: * after 0.2.2 "stable" patches applied ! 41: * ! 42: * Revision 1.6 1992/08/24 21:01:58 jason ! 43: * many changes and bugfixes for osf1 ! 44: * ! 45: * Revision 1.5 1992/07/31 01:22:03 julian ! 46: * support improved scsi.h layout ! 47: * ! 48: * Revision 1.4 1992/07/25 03:11:26 julian ! 49: * check each request fro sane flags. ! 50: * ! 51: * Revision 1.3 1992/07/24 00:52:45 julian ! 52: * improved timeout handling. ! 53: * added support for two arguments to the sd_done (or equiv) call so that ! 54: * they can pre-queue several arguments. ! 55: * slightly clean up error handling ! 56: * ! 57: * Revision 1.2 1992/07/17 22:03:54 julian ! 58: * upgraded the timeout code. ! 59: * added support for UIO-based i/o (as used for pmem operations) ! 60: * ! 61: * Revision 1.1 1992/05/27 00:51:12 balsup ! 62: * machkern/cor merge ! 63: */ ! 64: ! 65: /* ! 66: * a FEW lines in this driver come from a MACH adaptec-disk driver ! 67: * so the copyright below is included: ! 68: * ! 69: * Copyright 1990 by Open Software Foundation, ! 70: * Grenoble, FRANCE ! 71: * ! 72: * All Rights Reserved ! 73: * ! 74: * Permission to use, copy, modify, and distribute this software and ! 75: * its documentation for any purpose and without fee is hereby granted, ! 76: * provided that the above copyright notice appears in all copies and ! 77: * that both the copyright notice and this permission notice appear in ! 78: * supporting documentation, and that the name of OSF or Open Software ! 79: * Foundation not be used in advertising or publicity pertaining to ! 80: * distribution of the software without specific, written prior ! 81: * permission. ! 82: * ! 83: * OSF DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE ! 84: * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, ! 85: * IN NO EVENT SHALL OSF BE LIABLE FOR ANY SPECIAL, INDIRECT, OR ! 86: * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM ! 87: * LOSS OF USE, DATA OR PROFITS, WHETHER IN ACTION OF CONTRACT, ! 88: * NEGLIGENCE, OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION ! 89: * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. ! 90: */ ! 91: ! 92: ! 93: #include <sys/types.h> ! 94: #include <aha.h> ! 95: ! 96: #include <sys/param.h> ! 97: #include <sys/systm.h> ! 98: #include <sys/errno.h> ! 99: #include <sys/ioctl.h> ! 100: #include <sys/buf.h> ! 101: #include <sys/proc.h> ! 102: #include <sys/user.h> ! 103: ! 104: #ifdef MACH /* EITHER CMU OR OSF */ ! 105: #include <i386/ipl.h> ! 106: #include <i386at/scsi.h> ! 107: #include <i386at/scsiconf.h> ! 108: ! 109: #ifdef OSF /* OSF ONLY */ ! 110: #include <sys/table.h> ! 111: #include <i386/handler.h> ! 112: #include <i386/dispatcher.h> ! 113: #include <i386/AT386/atbus.h> ! 114: ! 115: #else OSF /* CMU ONLY */ ! 116: #include <i386at/atbus.h> ! 117: #include <i386/pio.h> ! 118: #endif OSF ! 119: #endif MACH /* end of MACH specific */ ! 120: ! 121: #ifdef __386BSD__ /* 386BSD specific */ ! 122: #define isa_dev isa_device ! 123: #define dev_unit id_unit ! 124: #define dev_addr id_iobase ! 125: ! 126: #include <i386/isa/isa_device.h> ! 127: #include <scsi/scsi_all.h> ! 128: #include <scsi/scsiconf.h> ! 129: ! 130: #ifdef DDB ! 131: int Debugger(); ! 132: #else ! 133: #define Debugger() panic("should call debugger here (adaptec.c)") ! 134: #endif /*!DDB*/ ! 135: ! 136: #endif /*__386BSD__*/ ! 137: extern int delaycount; /* from clock setup code */ ! 138: ! 139: /************************** board definitions *******************************/ ! 140: /* ! 141: * I/O Port Interface ! 142: */ ! 143: ! 144: #define AHA_BASE aha_base[unit] ! 145: #define AHA_CTRL_STAT_PORT (AHA_BASE + 0x0) /* control & status */ ! 146: #define AHA_CMD_DATA_PORT (AHA_BASE + 0x1) /* cmds and datas */ ! 147: #define AHA_INTR_PORT (AHA_BASE + 0x2) /* Intr. stat */ ! 148: ! 149: /* ! 150: * AHA_CTRL_STAT bits (write) ! 151: */ ! 152: ! 153: #define AHA_HRST 0x80 /* Hardware reset */ ! 154: #define AHA_SRST 0x40 /* Software reset */ ! 155: #define AHA_IRST 0x20 /* Interrupt reset */ ! 156: #define AHA_SCRST 0x10 /* SCSI bus reset */ ! 157: ! 158: /* ! 159: * AHA_CTRL_STAT bits (read) ! 160: */ ! 161: ! 162: #define AHA_STST 0x80 /* Self test in Progress */ ! 163: #define AHA_DIAGF 0x40 /* Diagnostic Failure */ ! 164: #define AHA_INIT 0x20 /* Mbx Init required */ ! 165: #define AHA_IDLE 0x10 /* Host Adapter Idle */ ! 166: #define AHA_CDF 0x08 /* cmd/data out port full */ ! 167: #define AHA_DF 0x04 /* Data in port full */ ! 168: #define AHA_INVDCMD 0x01 /* Invalid command */ ! 169: ! 170: /* ! 171: * AHA_CMD_DATA bits (write) ! 172: */ ! 173: ! 174: #define AHA_NOP 0x00 /* No operation */ ! 175: #define AHA_MBX_INIT 0x01 /* Mbx initialization */ ! 176: #define AHA_START_SCSI 0x02 /* start scsi command */ ! 177: #define AHA_START_BIOS 0x03 /* start bios command */ ! 178: #define AHA_INQUIRE 0x04 /* Adapter Inquiry */ ! 179: #define AHA_MBO_INTR_EN 0x05 /* Enable MBO available interrupt */ ! 180: #define AHA_SEL_TIMEOUT_SET 0x06 /* set selection time-out */ ! 181: #define AHA_BUS_ON_TIME_SET 0x07 /* set bus-on time */ ! 182: #define AHA_BUS_OFF_TIME_SET 0x08 /* set bus-off time */ ! 183: #define AHA_SPEED_SET 0x09 /* set transfer speed */ ! 184: #define AHA_DEV_GET 0x0a /* return installed devices */ ! 185: #define AHA_CONF_GET 0x0b /* return configuration data */ ! 186: #define AHA_TARGET_EN 0x0c /* enable target mode */ ! 187: #define AHA_SETUP_GET 0x0d /* return setup data */ ! 188: #define AHA_WRITE_CH2 0x1a /* write channel 2 buffer */ ! 189: #define AHA_READ_CH2 0x1b /* read channel 2 buffer */ ! 190: #define AHA_WRITE_FIFO 0x1c /* write fifo buffer */ ! 191: #define AHA_READ_FIFO 0x1d /* read fifo buffer */ ! 192: #define AHA_ECHO 0x1e /* Echo command data */ ! 193: ! 194: struct aha_cmd_buf { ! 195: u_char byte[16]; ! 196: }; ! 197: ! 198: /* ! 199: * AHA_INTR_PORT bits (read) ! 200: */ ! 201: ! 202: #define AHA_ANY_INTR 0x80 /* Any interrupt */ ! 203: #define AHA_SCRD 0x08 /* SCSI reset detected */ ! 204: #define AHA_HACC 0x04 /* Command complete */ ! 205: #define AHA_MBOA 0x02 /* MBX out empty */ ! 206: #define AHA_MBIF 0x01 /* MBX in full */ ! 207: ! 208: /* ! 209: * Mail box defs ! 210: */ ! 211: ! 212: #define AHA_MBX_SIZE 16 /* mail box size */ ! 213: ! 214: struct aha_mbx { ! 215: struct aha_mbx_out { ! 216: unsigned char cmd; ! 217: unsigned char ccb_addr[3]; ! 218: } mbo [AHA_MBX_SIZE]; ! 219: struct aha_mbx_in{ ! 220: unsigned char stat; ! 221: unsigned char ccb_addr[3]; ! 222: } mbi[AHA_MBX_SIZE]; ! 223: }; ! 224: ! 225: /* ! 226: * mbo.cmd values ! 227: */ ! 228: ! 229: #define AHA_MBO_FREE 0x0 /* MBO entry is free */ ! 230: #define AHA_MBO_START 0x1 /* MBO activate entry */ ! 231: #define AHA_MBO_ABORT 0x2 /* MBO abort entry */ ! 232: ! 233: #define AHA_MBI_FREE 0x0 /* MBI entry is free */ ! 234: #define AHA_MBI_OK 0x1 /* completed without error */ ! 235: #define AHA_MBI_ABORT 0x2 /* aborted ccb */ ! 236: #define AHA_MBI_UNKNOWN 0x3 /* Tried to abort invalid CCB */ ! 237: #define AHA_MBI_ERROR 0x4 /* Completed with error */ ! 238: ! 239: extern struct aha_mbx aha_mbx[]; ! 240: ! 241: /* FOR OLD VERSIONS OF THE !%$@ this may have to be 16 (yuk) */ ! 242: #define AHA_NSEG 17 /* Number of scatter gather segments <= 16 */ ! 243: /* allow 64 K i/o (min) */ ! 244: ! 245: struct aha_ccb { ! 246: unsigned char opcode; ! 247: unsigned char lun:3; ! 248: unsigned char data_in:1; /* must be 0 */ ! 249: unsigned char data_out:1; /* must be 0 */ ! 250: unsigned char target:3; ! 251: unsigned char scsi_cmd_length; ! 252: unsigned char req_sense_length; ! 253: unsigned char data_length[3]; ! 254: unsigned char data_addr[3]; ! 255: unsigned char link_addr[3]; ! 256: unsigned char link_id; ! 257: unsigned char host_stat; ! 258: unsigned char target_stat; ! 259: unsigned char reserved[2]; ! 260: struct scsi_generic scsi_cmd; ! 261: struct scsi_sense_data scsi_sense; ! 262: struct aha_scat_gath { ! 263: unsigned char seg_len[3]; ! 264: unsigned char seg_addr[3]; ! 265: } scat_gath[AHA_NSEG]; ! 266: struct aha_ccb *next; ! 267: struct scsi_xfer *xfer; /* the scsi_xfer for this cmd */ ! 268: struct aha_mbx_out *mbx; /* pointer to mail box */ ! 269: long int delta; /* difference from previous*/ ! 270: struct aha_ccb *later,*sooner; ! 271: int flags; ! 272: #define CCB_FREE 0 ! 273: #define CCB_ACTIVE 1 ! 274: #define CCB_ABORTED 2 ! 275: ! 276: }; ! 277: ! 278: struct aha_ccb *aha_soonest = (struct aha_ccb *)0; ! 279: struct aha_ccb *aha_latest = (struct aha_ccb *)0; ! 280: long int aha_furtherest = 0; /* longest time in the timeout queue */ ! 281: ! 282: /* ! 283: * opcode fields ! 284: */ ! 285: ! 286: #define AHA_INITIATOR_CCB 0x00 /* SCSI Initiator CCB */ ! 287: #define AHA_TARGET_CCB 0x01 /* SCSI Target CCB */ ! 288: #define AHA_INIT_SCAT_GATH_CCB 0x02 /* SCSI Initiator with scattter gather*/ ! 289: #define AHA_RESET_CCB 0x81 /* SCSI Bus reset */ ! 290: ! 291: ! 292: /* ! 293: * aha_ccb.host_stat values ! 294: */ ! 295: ! 296: #define AHA_OK 0x00 /* cmd ok */ ! 297: #define AHA_LINK_OK 0x0a /* Link cmd ok */ ! 298: #define AHA_LINK_IT 0x0b /* Link cmd ok + int */ ! 299: #define AHA_SEL_TIMEOUT 0x11 /* Selection time out */ ! 300: #define AHA_OVER_UNDER 0x12 /* Data over/under run */ ! 301: #define AHA_BUS_FREE 0x13 /* Bus dropped at unexpected time */ ! 302: #define AHA_INV_BUS 0x14 /* Invalid bus phase/sequence */ ! 303: #define AHA_BAD_MBO 0x15 /* Incorrect MBO cmd */ ! 304: #define AHA_BAD_CCB 0x16 /* Incorrect ccb opcode */ ! 305: #define AHA_BAD_LINK 0x17 /* Not same values of LUN for links */ ! 306: #define AHA_INV_TARGET 0x18 /* Invalid target direction */ ! 307: #define AHA_CCB_DUP 0x19 /* Duplicate CCB received */ ! 308: #define AHA_INV_CCB 0x1a /* Invalid CCB or segment list */ ! 309: #define AHA_ABORTED 42 ! 310: ! 311: ! 312: ! 313: ! 314: struct aha_setup ! 315: { ! 316: u_char sync_neg:1; ! 317: u_char parity:1; ! 318: u_char :6; ! 319: u_char speed; ! 320: u_char bus_on; ! 321: u_char bus_off; ! 322: u_char num_mbx; ! 323: u_char mbx[3]; ! 324: struct ! 325: { ! 326: u_char offset:4; ! 327: u_char period:3; ! 328: u_char valid:1; ! 329: }sync[8]; ! 330: u_char disc_sts; ! 331: }; ! 332: ! 333: struct aha_config ! 334: { ! 335: u_char chan; ! 336: u_char intr; ! 337: u_char scsi_dev:3; ! 338: u_char :5; ! 339: }; ! 340: ! 341: #define INT9 0x01 ! 342: #define INT10 0x02 ! 343: #define INT11 0x04 ! 344: #define INT12 0x08 ! 345: #define INT14 0x20 ! 346: #define INT15 0x40 ! 347: ! 348: #define CHAN0 0x01 ! 349: #define CHAN5 0x20 ! 350: #define CHAN6 0x40 ! 351: #define CHAN7 0x80 ! 352: ! 353: ! 354: /*********************************** end of board definitions***************/ ! 355: ! 356: ! 357: #ifdef MACH ! 358: #define PHYSTOKV(x) phystokv(x) ! 359: #define KVTOPHYS(x) kvtophys(x) ! 360: #else MACH ! 361: #ifdef __386BSD__ ! 362: #define PHYSTOKV(x) (x | 0xFE000000) ! 363: #define KVTOPHYS(x) vtophys(x) ! 364: #else __386BSD__ ! 365: #endif __386BSD__ ! 366: #endif MACH ! 367: #define AHA_DMA_PAGES AHA_NSEG ! 368: ! 369: #define PAGESIZ 4096 ! 370: #define INVALIDATE_CACHE {asm volatile( ".byte 0x0F ;.byte 0x08" ); } ! 371: ! 372: ! 373: u_char aha_scratch_buf[256]; ! 374: #ifdef MACH ! 375: caddr_t aha_base[NAHA]; /* base port for each board */ ! 376: #else ! 377: short aha_base[NAHA]; /* base port for each board */ ! 378: #endif ! 379: struct aha_mbx aha_mbx[NAHA]; ! 380: struct aha_ccb *aha_ccb_free[NAHA]; ! 381: struct aha_ccb aha_ccb[NAHA][AHA_MBX_SIZE]; ! 382: struct scsi_xfer aha_scsi_xfer[NAHA]; ! 383: struct isa_dev *ahainfo[NAHA]; ! 384: struct aha_ccb *aha_get_ccb(); ! 385: int aha_int[NAHA]; ! 386: int aha_dma[NAHA]; ! 387: int aha_scsi_dev[NAHA]; ! 388: int aha_initialized[NAHA]; ! 389: #ifdef OSF ! 390: int aha_attached[NAHA]; ! 391: #endif OSF ! 392: int aha_debug = 0; ! 393: ! 394: int ahaprobe(), ahaattach(), ahaintr(); ! 395: #ifdef MACH ! 396: struct isa_driver ahadriver = { ahaprobe, 0, ahaattach, "aha", 0, 0, 0}; ! 397: int (*ahaintrs[])() = {ahaintr, 0}; ! 398: #endif ! 399: #ifdef __386BSD__ ! 400: struct isa_driver ahadriver = { ahaprobe, ahaattach, "aha",}; ! 401: #endif __386BSD__ ! 402: static int ahaunit = 0; ! 403: ! 404: ! 405: #define aha_abortmbx(mbx) \ ! 406: (mbx)->cmd = AHA_MBO_ABORT; \ ! 407: outb(AHA_CMD_DATA_PORT, AHA_START_SCSI); ! 408: #define aha_startmbx(mbx) \ ! 409: (mbx)->cmd = AHA_MBO_START; \ ! 410: outb(AHA_CMD_DATA_PORT, AHA_START_SCSI); ! 411: ! 412: ! 413: ! 414: int aha_scsi_cmd(); ! 415: int aha_timeout(); ! 416: void ahaminphys(); ! 417: long int aha_adapter_info(); ! 418: ! 419: struct scsi_switch aha_switch = ! 420: { ! 421: aha_scsi_cmd, ! 422: ahaminphys, ! 423: 0, ! 424: 0, ! 425: aha_adapter_info, ! 426: 0,0,0 ! 427: }; ! 428: #define AHA_CMD_TIMEOUT_FUDGE 200 /* multiplied to get Secs */ ! 429: #define AHA_RESET_TIMEOUT 1000000 /* time to wait for reset */ ! 430: #define AHA_SCSI_TIMEOUT_FUDGE 20 /* divided by for mSecs */ ! 431: ! 432: ! 433: /***********************************************************************\ ! 434: * aha_cmd(unit,icnt, ocnt,wait, retval, opcode, args) * ! 435: * Activate Adapter command * ! 436: * icnt: number of args (outbound bytes written after opcode) * ! 437: * ocnt: number of expected returned bytes * ! 438: * wait: number of seconds to wait for response * ! 439: * retval: buffer where to place returned bytes * ! 440: * opcode: opcode AHA_NOP, AHA_MBX_INIT, AHA_START_SCSI ... * ! 441: * args: parameters * ! 442: * * ! 443: * Performs an adapter command through the ports. Not to be confused * ! 444: * with a scsi command, which is read in via the dma * ! 445: * One of the adapter commands tells it to read in a scsi command * ! 446: \***********************************************************************/ ! 447: ! 448: ! 449: aha_cmd(unit,icnt, ocnt, wait,retval, opcode, args) ! 450: ! 451: u_char *retval; ! 452: unsigned opcode; ! 453: u_char args; ! 454: { ! 455: unsigned *ic = &opcode; ! 456: u_char oc; ! 457: register i; ! 458: int sts; ! 459: ! 460: /*******************************************************\ ! 461: * multiply the wait argument by a big constant * ! 462: * zero defaults to 1 * ! 463: \*******************************************************/ ! 464: if(!wait) ! 465: wait = AHA_CMD_TIMEOUT_FUDGE * delaycount; ! 466: else ! 467: wait *= AHA_CMD_TIMEOUT_FUDGE * delaycount; ! 468: /*******************************************************\ ! 469: * Wait for the adapter to go idle, unless it's one of * ! 470: * the commands which don't need this * ! 471: \*******************************************************/ ! 472: if (opcode != AHA_MBX_INIT && opcode != AHA_START_SCSI) ! 473: { ! 474: i = AHA_CMD_TIMEOUT_FUDGE * delaycount; /* 1 sec?*/ ! 475: while (--i) ! 476: { ! 477: sts = inb(AHA_CTRL_STAT_PORT); ! 478: if (sts & AHA_IDLE) ! 479: { ! 480: break; ! 481: } ! 482: } ! 483: if (!i) ! 484: { ! 485: printf("aha_cmd: aha1542 host not idle(0x%x)\n",sts); ! 486: return(ENXIO); ! 487: } ! 488: } ! 489: /*******************************************************\ ! 490: * Now that it is idle, if we expect output, preflush the* ! 491: * queue feeding to us. * ! 492: \*******************************************************/ ! 493: if (ocnt) ! 494: { ! 495: while((inb(AHA_CTRL_STAT_PORT)) & AHA_DF) ! 496: inb(AHA_CMD_DATA_PORT); ! 497: } ! 498: ! 499: /*******************************************************\ ! 500: * Output the command and the number of arguments given * ! 501: * for each byte, first check the port is empty. * ! 502: \*******************************************************/ ! 503: icnt++; /* include the command */ ! 504: while (icnt--) ! 505: { ! 506: sts = inb(AHA_CTRL_STAT_PORT); ! 507: for (i=0; i< wait; i++) ! 508: { ! 509: sts = inb(AHA_CTRL_STAT_PORT); ! 510: if (!(sts & AHA_CDF)) ! 511: break; ! 512: } ! 513: if (i >= wait) ! 514: { ! 515: printf("aha_cmd: aha1542 cmd/data port full\n"); ! 516: outb(AHA_CTRL_STAT_PORT, AHA_SRST); ! 517: return(ENXIO); ! 518: } ! 519: outb(AHA_CMD_DATA_PORT, (u_char)(*ic++)); ! 520: } ! 521: /*******************************************************\ ! 522: * If we expect input, loop that many times, each time, * ! 523: * looking for the data register to have valid data * ! 524: \*******************************************************/ ! 525: while (ocnt--) ! 526: { ! 527: sts = inb(AHA_CTRL_STAT_PORT); ! 528: for (i=0; i< wait; i++) ! 529: { ! 530: sts = inb(AHA_CTRL_STAT_PORT); ! 531: if (sts & AHA_DF) ! 532: break; ! 533: } ! 534: if (i >= wait) ! 535: { ! 536: printf("aha_cmd: aha1542 cmd/data port empty %d\n",ocnt); ! 537: return(ENXIO); ! 538: } ! 539: oc = inb(AHA_CMD_DATA_PORT); ! 540: if (retval) ! 541: *retval++ = oc; ! 542: } ! 543: /*******************************************************\ ! 544: * Wait for the board to report a finised instruction * ! 545: \*******************************************************/ ! 546: i=AHA_CMD_TIMEOUT_FUDGE * delaycount; /* 1 sec? */ ! 547: while (--i) ! 548: { ! 549: sts = inb(AHA_INTR_PORT); ! 550: if (sts & AHA_HACC) ! 551: { ! 552: break; ! 553: } ! 554: } ! 555: if (!i) ! 556: { ! 557: printf("aha_cmd: aha1542 host not finished(0x%x)\n",sts); ! 558: return(ENXIO); ! 559: } ! 560: outb(AHA_CTRL_STAT_PORT, AHA_IRST); ! 561: return(0); ! 562: } ! 563: ! 564: /*******************************************************\ ! 565: * Check if the device can be found at the port given * ! 566: * and if so, set it up ready for further work * ! 567: * as an argument, takes the isa_dev structure from * ! 568: * autoconf.c * ! 569: \*******************************************************/ ! 570: ahaprobe(dev) ! 571: struct isa_dev *dev; ! 572: { ! 573: int unit = ahaunit; ! 574: #if defined(OSF) ! 575: static ihandler_t aha_handler[NAHA]; ! 576: static ihandler_id_t *aha_handler_id[NAHA]; ! 577: register ihandler_t *chp = &aha_handler[unit];; ! 578: #endif /* defined(OSF) */ ! 579: ! 580: /***********************************************\ ! 581: /***********************************************\ ! 582: * find unit and check we have that many defined * ! 583: \***********************************************/ ! 584: dev->dev_unit = unit; ! 585: aha_base[unit] = dev->dev_addr; ! 586: if(unit >= NAHA) ! 587: { ! 588: printf("aha: unit number (%d) too high\n",unit); ! 589: return(0); ! 590: } ! 591: /***********************************************\ ! 592: * Try initialise a unit at this location * ! 593: * sets up dma and bus speed, loads aha_int[unit]* ! 594: \***********************************************/ ! 595: if (aha_init(unit) != 0) ! 596: { ! 597: return(0); ! 598: } ! 599: ! 600: /***********************************************\ ! 601: * If it's there, put in it's interrupt vectors * ! 602: \***********************************************/ ! 603: #if !defined(OSF) ! 604: #if defined MACH ! 605: iunit[aha_int[unit]] =unit; ! 606: ivect[aha_int[unit]] = ahaintr; ! 607: intpri[aha_int[unit]] = dev->dev_spl; ! 608: form_pic_mask(); ! 609: /*take_dev_irq(dev);*/ ! 610: #else ! 611: #ifdef __386BSD__ ! 612: dev->id_irq = (1 << aha_int[unit]); ! 613: dev->id_drq = aha_dma[unit]; ! 614: #endif __386BSD__ ! 615: #endif ! 616: #else /* !defined(OSF) */ ! 617: ! 618: chp->ih_level = dev->dev_pic; ! 619: chp->ih_handler = dev->dev_intr[0]; ! 620: chp->ih_resolver = i386_resolver; ! 621: chp->ih_rdev = dev; ! 622: chp->ih_stats.intr_type = INTR_DEVICE; ! 623: chp->ih_stats.intr_cnt = 0; ! 624: chp->ih_hparam[0].intparam = unit; ! 625: if ((aha_handler_id[unit] = handler_add(chp)) != NULL) ! 626: handler_enable(aha_handler_id[unit]); ! 627: else ! 628: panic("Unable to add aha interrupt handler"); ! 629: #endif /* !defined(OSF) */ ! 630: #ifdef __386BSD__ ! 631: printf("\n **"); ! 632: #else __386BSD__ ! 633: printf("port=%x spl=%d\n", ! 634: dev->dev_addr, dev->dev_spl); ! 635: #endif __386BSD__ ! 636: ahaunit ++; ! 637: return(1); ! 638: } ! 639: ! 640: /***********************************************\ ! 641: * Attach all the sub-devices we can find * ! 642: \***********************************************/ ! 643: ahaattach(dev) ! 644: struct isa_dev *dev; ! 645: { ! 646: int unit = dev->dev_unit; ! 647: ! 648: #ifdef __386BSD__ ! 649: printf("aha%d: probing for scsi devices..\n", unit); ! 650: #endif __386BSD__ ! 651: /***********************************************\ ! 652: * ask the adapter what subunits are present * ! 653: \***********************************************/ ! 654: scsi_attachdevs( unit, aha_scsi_dev[unit], &aha_switch); ! 655: #if defined(OSF) ! 656: aha_attached[unit]=1; ! 657: #endif /* defined(OSF) */ ! 658: if(!unit) /* only one for all boards */ ! 659: { ! 660: aha_timeout(0); ! 661: } ! 662: return; ! 663: } ! 664: ! 665: ! 666: /***********************************************\ ! 667: * Return some information to the caller about * ! 668: * the adapter and it's capabilities * ! 669: \***********************************************/ ! 670: long int aha_adapter_info(unit) ! 671: int unit; ! 672: { ! 673: return(2); /* 2 outstanding requests at a time per device */ ! 674: } ! 675: ! 676: /***********************************************\ ! 677: * Catch an interrupt from the adaptor * ! 678: \***********************************************/ ! 679: ahaintr(unit) ! 680: { ! 681: struct aha_ccb *ccb; ! 682: unsigned char stat; ! 683: register i; ! 684: ! 685: if(scsi_debug & PRINTROUTINES) ! 686: printf("ahaintr "); ! 687: /***********************************************\ ! 688: * First acknowlege the interrupt, Then if it's * ! 689: * not telling about a completed operation * ! 690: * just return. * ! 691: \***********************************************/ ! 692: stat = inb(AHA_INTR_PORT); ! 693: outb(AHA_CTRL_STAT_PORT, AHA_IRST); ! 694: if(scsi_debug & TRACEINTERRUPTS) ! 695: printf("int "); ! 696: if (! (stat & AHA_MBIF)) ! 697: return(1); ! 698: if(scsi_debug & TRACEINTERRUPTS) ! 699: printf("b "); ! 700: #if defined(OSF) ! 701: if (!aha_attached[unit]) ! 702: { ! 703: return(1); ! 704: } ! 705: #endif /* defined(OSF) */ ! 706: /***********************************************\ ! 707: * If it IS then process the competed operation * ! 708: \***********************************************/ ! 709: for (i = 0; i < AHA_MBX_SIZE; i++) ! 710: { ! 711: if (aha_mbx[unit].mbi[i].stat != AHA_MBI_FREE) ! 712: { ! 713: ccb = (struct aha_ccb *)PHYSTOKV( ! 714: (_3btol(aha_mbx[unit].mbi[i].ccb_addr))); ! 715: ! 716: if((stat = aha_mbx[unit].mbi[i].stat) != AHA_MBI_OK) ! 717: { ! 718: switch(stat) ! 719: { ! 720: case AHA_MBI_ABORT: ! 721: if(aha_debug) ! 722: printf("abort"); ! 723: ccb->host_stat = AHA_ABORTED; ! 724: break; ! 725: ! 726: case AHA_MBI_UNKNOWN: ! 727: ccb = (struct aha_ccb *)0; ! 728: if(aha_debug) ! 729: printf("unknown ccb for abort "); ! 730: /* may have missed it */ ! 731: /* no such ccb known for abort */ ! 732: ! 733: case AHA_MBI_ERROR: ! 734: break; ! 735: ! 736: default: ! 737: panic("Impossible mbxi status"); ! 738: ! 739: } ! 740: if( aha_debug && ccb ) ! 741: { ! 742: u_char *cp; ! 743: cp = (u_char *)(&(ccb->scsi_cmd)); ! 744: printf("op=%x %x %x %x %x %x\n", ! 745: cp[0], cp[1], cp[2], ! 746: cp[3], cp[4], cp[5]); ! 747: printf("stat %x for mbi[%d]\n" ! 748: , aha_mbx[unit].mbi[i].stat, i); ! 749: printf("addr = 0x%x\n", ccb); ! 750: } ! 751: } ! 752: if(ccb) ! 753: { ! 754: aha_remove_timeout(ccb); ! 755: aha_done(unit,ccb); ! 756: } ! 757: aha_mbx[unit].mbi[i].stat = AHA_MBI_FREE; ! 758: } ! 759: } ! 760: return(1); ! 761: } ! 762: ! 763: /***********************************************\ ! 764: * A ccb (and hence a mbx-out is put onto the * ! 765: * free list. * ! 766: \***********************************************/ ! 767: aha_free_ccb(unit,ccb, flags) ! 768: struct aha_ccb *ccb; ! 769: { ! 770: unsigned int opri; ! 771: ! 772: if(scsi_debug & PRINTROUTINES) ! 773: printf("ccb%d(0x%x)> ",unit,flags); ! 774: if (!(flags & SCSI_NOMASK)) ! 775: opri = splbio(); ! 776: ! 777: ccb->next = aha_ccb_free[unit]; ! 778: aha_ccb_free[unit] = ccb; ! 779: ccb->flags = CCB_FREE; ! 780: if(ccb->sooner || ccb->later) ! 781: { ! 782: printf("yikes, still in timeout queue\n"); ! 783: aha_remove_timeout(ccb); ! 784: } ! 785: /***********************************************\ ! 786: * If there were none, wake abybody waiting for * ! 787: * one to come free, starting with queued entries* ! 788: \***********************************************/ ! 789: if (!ccb->next) { ! 790: wakeup(&aha_ccb_free[unit]); ! 791: } ! 792: if (!(flags & SCSI_NOMASK)) ! 793: splx(opri); ! 794: } ! 795: ! 796: /***********************************************\ ! 797: * Get a free ccb (and hence mbox-out entry) * ! 798: \***********************************************/ ! 799: struct aha_ccb * ! 800: aha_get_ccb(unit,flags) ! 801: { ! 802: unsigned opri; ! 803: struct aha_ccb *rc; ! 804: ! 805: if(scsi_debug & PRINTROUTINES) ! 806: printf("<ccb%d(0x%x) ",unit,flags); ! 807: if (!(flags & SCSI_NOMASK)) ! 808: opri = splbio(); ! 809: /***********************************************\ ! 810: * If we can and have to, sleep waiting for one * ! 811: * to come free * ! 812: \***********************************************/ ! 813: while ((!(rc = aha_ccb_free[unit])) && (!(flags & SCSI_NOSLEEP))) ! 814: { ! 815: sleep(&aha_ccb_free[unit], PRIBIO); ! 816: } ! 817: if (rc) ! 818: { ! 819: aha_ccb_free[unit] = aha_ccb_free[unit]->next; ! 820: rc->flags = CCB_ACTIVE; ! 821: } ! 822: if (!(flags & SCSI_NOMASK)) ! 823: splx(opri); ! 824: return(rc); ! 825: } ! 826: ! 827: ! 828: /***********************************************\ ! 829: * We have a ccb which has been processed by the * ! 830: * adaptor, now we look to see how the operation * ! 831: * went. Wake up the owner if waiting * ! 832: \***********************************************/ ! 833: aha_done(unit,ccb) ! 834: struct aha_ccb *ccb; ! 835: { ! 836: struct scsi_sense_data *s1,*s2; ! 837: struct scsi_xfer *xs = ccb->xfer; ! 838: ! 839: if(scsi_debug & PRINTROUTINES ) ! 840: printf("aha_done "); ! 841: /***********************************************\ ! 842: * Otherwise, put the results of the operation * ! 843: * into the xfer and call whoever started it * ! 844: \***********************************************/ ! 845: if(!(xs->flags & INUSE)) ! 846: { ! 847: printf("exiting but not in use! "); ! 848: Debugger(); ! 849: } ! 850: if ( ( ccb->host_stat != AHA_OK ! 851: || ccb->target_stat != SCSI_OK) ! 852: && (!(xs->flags & SCSI_ERR_OK))) ! 853: { ! 854: s1 = (struct scsi_sense_data *)(((char *)(&ccb->scsi_cmd)) ! 855: + ccb->scsi_cmd_length); ! 856: s2 = &(xs->sense); ! 857: ! 858: if(ccb->host_stat) ! 859: { ! 860: switch(ccb->host_stat) ! 861: { ! 862: case AHA_ABORTED: ! 863: case AHA_SEL_TIMEOUT: /* No response */ ! 864: xs->error = XS_TIMEOUT; ! 865: break; ! 866: default: /* Other scsi protocol messes */ ! 867: xs->error = XS_DRIVER_STUFFUP; ! 868: if (aha_debug > 1) ! 869: { ! 870: printf("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 (aha_debug > 1) ! 890: { ! 891: printf("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: aha_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: /***********************************************\ ! 910: * Start the board, ready for normal operation * ! 911: \***********************************************/ ! 912: aha_init(unit) ! 913: int unit; ! 914: { ! 915: unsigned char ad[3]; ! 916: volatile int i,sts; ! 917: struct aha_config conf; ! 918: ! 919: /***********************************************\ ! 920: * reset board, If it doesn't respond, assume * ! 921: * that it's not there.. good for the probe * ! 922: \***********************************************/ ! 923: ! 924: outb(AHA_CTRL_STAT_PORT, AHA_HRST|AHA_SRST); ! 925: ! 926: for (i=0; i < AHA_RESET_TIMEOUT; i++) ! 927: { ! 928: sts = inb(AHA_CTRL_STAT_PORT) ; ! 929: if ( sts == (AHA_IDLE | AHA_INIT)) ! 930: break; ! 931: } ! 932: if (i >= AHA_RESET_TIMEOUT) ! 933: { ! 934: if (aha_debug) ! 935: printf("aha_init: No answer from adaptec board\n"); ! 936: return(ENXIO); ! 937: } ! 938: ! 939: /***********************************************\ ! 940: * Assume we have a board at this stage * ! 941: * setup dma channel from jumpers and save int * ! 942: * level * ! 943: \***********************************************/ ! 944: #ifdef __386BSD__ ! 945: printf("aha%d reading board settings, ",unit); ! 946: #define PRNT(x) ! 947: #else __386BSD__ ! 948: printf("aha%d:",unit); ! 949: #define PRNT(x) printf(x) ! 950: #endif __386BSD__ ! 951: aha_cmd(unit,0, sizeof(conf), 0 ,&conf, AHA_CONF_GET); ! 952: switch(conf.chan) ! 953: { ! 954: case CHAN0: ! 955: outb(0x0b, 0x0c); ! 956: outb(0x0a, 0x00); ! 957: aha_dma[unit] = 0; ! 958: PRNT("dma=0 "); ! 959: break; ! 960: case CHAN5: ! 961: outb(0xd6, 0xc1); ! 962: outb(0xd4, 0x01); ! 963: aha_dma[unit] = 5; ! 964: PRNT("dma=5 "); ! 965: break; ! 966: case CHAN6: ! 967: outb(0xd6, 0xc2); ! 968: outb(0xd4, 0x02); ! 969: aha_dma[unit] = 6; ! 970: PRNT("dma=6 "); ! 971: break; ! 972: case CHAN7: ! 973: outb(0xd6, 0xc3); ! 974: outb(0xd4, 0x03); ! 975: aha_dma[unit] = 7; ! 976: PRNT("dma=7 "); ! 977: break; ! 978: default: ! 979: printf("illegal dma jumper setting\n"); ! 980: return(EIO); ! 981: } ! 982: switch(conf.intr) ! 983: { ! 984: case INT9: ! 985: aha_int[unit] = 9; ! 986: PRNT("int=9 "); ! 987: break; ! 988: case INT10: ! 989: aha_int[unit] = 10; ! 990: PRNT("int=10 "); ! 991: break; ! 992: case INT11: ! 993: aha_int[unit] = 11; ! 994: PRNT("int=11 "); ! 995: break; ! 996: case INT12: ! 997: aha_int[unit] = 12; ! 998: PRNT("int=12 "); ! 999: break; ! 1000: case INT14: ! 1001: aha_int[unit] = 14; ! 1002: PRNT("int=14 "); ! 1003: break; ! 1004: case INT15: ! 1005: aha_int[unit] = 15; ! 1006: PRNT("int=15 "); ! 1007: break; ! 1008: default: ! 1009: printf("illegal int jumper setting\n"); ! 1010: return(EIO); ! 1011: } ! 1012: /* who are we on the scsi bus */ ! 1013: aha_scsi_dev[unit] = conf.scsi_dev; ! 1014: ! 1015: ! 1016: /***********************************************\ ! 1017: * Initialize memory transfer speed * ! 1018: \***********************************************/ ! 1019: if(!(aha_set_bus_speed(unit))) ! 1020: { ! 1021: return(EIO); ! 1022: } ! 1023: ! 1024: ! 1025: /***********************************************\ ! 1026: * Initialize mail box * ! 1027: \***********************************************/ ! 1028: ! 1029: lto3b(KVTOPHYS(&aha_mbx[unit]), ad); ! 1030: ! 1031: aha_cmd(unit,4, 0, 0, 0, AHA_MBX_INIT, ! 1032: AHA_MBX_SIZE, ! 1033: ad[0], ! 1034: ad[1], ! 1035: ad[2]); ! 1036: ! 1037: ! 1038: /***********************************************\ ! 1039: * link the ccb's with the mbox-out entries and * ! 1040: * into a free-list * ! 1041: \***********************************************/ ! 1042: for (i=0; i < AHA_MBX_SIZE; i++) { ! 1043: aha_ccb[unit][i].next = aha_ccb_free[unit]; ! 1044: aha_ccb_free[unit] = &aha_ccb[unit][i]; ! 1045: aha_ccb_free[unit]->flags = CCB_FREE; ! 1046: aha_ccb_free[unit]->mbx = &aha_mbx[unit].mbo[i]; ! 1047: lto3b(KVTOPHYS(aha_ccb_free[unit]), aha_mbx[unit].mbo[i].ccb_addr); ! 1048: } ! 1049: ! 1050: /***********************************************\ ! 1051: * Note that we are going and return (to probe) * ! 1052: \***********************************************/ ! 1053: aha_initialized[unit]++; ! 1054: return(0); ! 1055: } ! 1056: ! 1057: ! 1058: ! 1059: ! 1060: ! 1061: void ahaminphys(bp) ! 1062: struct buf *bp; ! 1063: { ! 1064: #ifdef MACH ! 1065: #if !defined(OSF) ! 1066: bp->b_flags |= B_NPAGES; /* can support scat/gather */ ! 1067: #endif /* !defined(OSF) */ ! 1068: #endif MACH ! 1069: /* aha seems to explode with 17 segs (64k may require 17 segs) */ ! 1070: /* on old boards so use a max of 16 segs if you have problems here*/ ! 1071: if(bp->b_bcount > ((AHA_NSEG - 1) * PAGESIZ)) ! 1072: { ! 1073: bp->b_bcount = ((AHA_NSEG - 1) * PAGESIZ); ! 1074: } ! 1075: } ! 1076: ! 1077: /***********************************************\ ! 1078: * start a scsi operation given the command and * ! 1079: * the data address. Also needs the unit, target * ! 1080: * and lu * ! 1081: \***********************************************/ ! 1082: int aha_scsi_cmd(xs) ! 1083: struct scsi_xfer *xs; ! 1084: { ! 1085: struct scsi_sense_data *s1,*s2; ! 1086: struct aha_ccb *ccb; ! 1087: struct aha_scat_gath *sg; ! 1088: int seg; /* scatter gather seg being worked on */ ! 1089: int i = 0; ! 1090: int rc = 0; ! 1091: int thiskv; ! 1092: int thisphys,nextphys; ! 1093: int unit =xs->adapter; ! 1094: int bytes_this_seg,bytes_this_page,datalen,flags; ! 1095: struct iovec *iovp; ! 1096: int s; ! 1097: ! 1098: if(scsi_debug & PRINTROUTINES) ! 1099: printf("aha_scsi_cmd "); ! 1100: /***********************************************\ ! 1101: * get a ccb (mbox-out) to use. If the transfer * ! 1102: * is from a buf (possibly from interrupt time) * ! 1103: * then we can't allow it to sleep * ! 1104: \***********************************************/ ! 1105: flags = xs->flags; ! 1106: if(!(flags & INUSE)) ! 1107: { ! 1108: printf("not in use!"); ! 1109: Debugger(); ! 1110: xs->flags |= INUSE; ! 1111: } ! 1112: if(flags & ITSDONE) ! 1113: { ! 1114: printf("Already done! check device retry code "); ! 1115: Debugger(); ! 1116: xs->flags &= ~ITSDONE; ! 1117: } ! 1118: if(xs->bp) flags |= (SCSI_NOSLEEP); /* just to be sure */ ! 1119: if (!(ccb = aha_get_ccb(unit,flags))) ! 1120: { ! 1121: xs->error = XS_DRIVER_STUFFUP; ! 1122: return(TRY_AGAIN_LATER); ! 1123: } ! 1124: ! 1125: if (ccb->mbx->cmd != AHA_MBO_FREE) ! 1126: printf("MBO not free\n"); ! 1127: ! 1128: /***********************************************\ ! 1129: * Put all the arguments for the xfer in the ccb * ! 1130: \***********************************************/ ! 1131: ccb->xfer = xs; ! 1132: if(flags & SCSI_RESET) ! 1133: { ! 1134: ccb->opcode = AHA_RESET_CCB; ! 1135: } ! 1136: else ! 1137: { ! 1138: /* can't use S/G if zero length */ ! 1139: ccb->opcode = (xs->datalen? ! 1140: AHA_INIT_SCAT_GATH_CCB ! 1141: :AHA_INITIATOR_CCB); ! 1142: } ! 1143: ccb->target = xs->targ;; ! 1144: ccb->data_out = 0; ! 1145: ccb->data_in = 0; ! 1146: ccb->lun = xs->lu; ! 1147: ccb->scsi_cmd_length = xs->cmdlen; ! 1148: ccb->req_sense_length = sizeof(ccb->scsi_sense); ! 1149: ! 1150: if((xs->datalen) && (!(flags & SCSI_RESET))) ! 1151: { /* can use S/G only if not zero length */ ! 1152: lto3b(KVTOPHYS(ccb->scat_gath), ccb->data_addr ); ! 1153: sg = ccb->scat_gath ; ! 1154: seg = 0; ! 1155: if(flags & SCSI_DATA_UIO) ! 1156: { ! 1157: iovp = ((struct uio *)xs->data)->uio_iov; ! 1158: datalen = ((struct uio *)xs->data)->uio_iovcnt; ! 1159: while ((datalen) && (seg < AHA_NSEG)) ! 1160: { ! 1161: lto3b(iovp->iov_base,&(sg->seg_addr)); ! 1162: lto3b(iovp->iov_len,&(sg->seg_len)); ! 1163: if(scsi_debug & SHOWSCATGATH) ! 1164: printf("(0x%x@0x%x)" ! 1165: ,iovp->iov_len ! 1166: ,iovp->iov_base); ! 1167: sg++; ! 1168: iovp++; ! 1169: seg++; ! 1170: datalen--; ! 1171: } ! 1172: } ! 1173: else ! 1174: { ! 1175: /***********************************************\ ! 1176: * Set up the scatter gather block * ! 1177: \***********************************************/ ! 1178: ! 1179: if(scsi_debug & SHOWSCATGATH) ! 1180: printf("%d @0x%x:- ",xs->datalen,xs->data); ! 1181: datalen = xs->datalen; ! 1182: thiskv = (int)xs->data; ! 1183: thisphys = KVTOPHYS(thiskv); ! 1184: ! 1185: while ((datalen) && (seg < AHA_NSEG)) ! 1186: { ! 1187: bytes_this_seg = 0; ! 1188: ! 1189: /* put in the base address */ ! 1190: lto3b(thisphys,&(sg->seg_addr)); ! 1191: ! 1192: if(scsi_debug & SHOWSCATGATH) ! 1193: printf("0x%x",thisphys); ! 1194: ! 1195: /* do it at least once */ ! 1196: nextphys = thisphys; ! 1197: while ((datalen) && (thisphys == nextphys)) ! 1198: /***************************************\ ! 1199: * This page is contiguous (physically) * ! 1200: * with the the last, just extend the * ! 1201: * length * ! 1202: \***************************************/ ! 1203: { ! 1204: /** how far to the end of the page ***/ ! 1205: nextphys = (thisphys & (~(PAGESIZ - 1))) ! 1206: + PAGESIZ; ! 1207: bytes_this_page = nextphys - thisphys; ! 1208: /**** or the data ****/ ! 1209: bytes_this_page = min(bytes_this_page ! 1210: ,datalen); ! 1211: bytes_this_seg += bytes_this_page; ! 1212: datalen -= bytes_this_page; ! 1213: ! 1214: /**** get more ready for the next page ****/ ! 1215: thiskv = (thiskv & (~(PAGESIZ - 1))) ! 1216: + PAGESIZ; ! 1217: if(datalen) ! 1218: thisphys = KVTOPHYS(thiskv); ! 1219: } ! 1220: /***************************************\ ! 1221: * next page isn't contiguous, finish the seg* ! 1222: \***************************************/ ! 1223: if(scsi_debug & SHOWSCATGATH) ! 1224: printf("(0x%x)",bytes_this_seg); ! 1225: lto3b(bytes_this_seg,&(sg->seg_len)); ! 1226: sg++; ! 1227: seg++; ! 1228: } ! 1229: } ! 1230: lto3b(seg * sizeof(struct aha_scat_gath),ccb->data_length); ! 1231: if(scsi_debug & SHOWSCATGATH) ! 1232: printf("\n"); ! 1233: if (datalen) ! 1234: { /* there's still data, must have run out of segs! */ ! 1235: printf("aha_scsi_cmd%d: more than %d DMA segs\n", ! 1236: unit,AHA_NSEG); ! 1237: xs->error = XS_DRIVER_STUFFUP; ! 1238: aha_free_ccb(unit,ccb,flags); ! 1239: return(HAD_ERROR); ! 1240: } ! 1241: ! 1242: } ! 1243: else ! 1244: { /* No data xfer, use non S/G values */ ! 1245: lto3b(0, ccb->data_addr ); ! 1246: lto3b(0,ccb->data_length); ! 1247: } ! 1248: lto3b(0, ccb->link_addr ); ! 1249: /***********************************************\ ! 1250: * Put the scsi command in the ccb and start it * ! 1251: \***********************************************/ ! 1252: if(!(flags & SCSI_RESET)) ! 1253: bcopy(xs->cmd, &ccb->scsi_cmd, ccb->scsi_cmd_length); ! 1254: if(scsi_debug & SHOWCOMMANDS) ! 1255: { ! 1256: u_char *b = (u_char *)&ccb->scsi_cmd; ! 1257: if(!(flags & SCSI_RESET)) ! 1258: { ! 1259: int i = 0; ! 1260: printf("aha%d:%d:%d-" ! 1261: ,unit ! 1262: ,ccb->target ! 1263: ,ccb->lun ); ! 1264: while(i < ccb->scsi_cmd_length ) ! 1265: { ! 1266: if(i) printf(","); ! 1267: printf("%x",b[i++]); ! 1268: } ! 1269: } ! 1270: else ! 1271: { ! 1272: printf("aha%d:%d:%d-RESET- " ! 1273: ,unit ! 1274: ,ccb->target ! 1275: ,ccb->lun ! 1276: ); ! 1277: } ! 1278: } ! 1279: if (!(flags & SCSI_NOMASK)) ! 1280: { ! 1281: s= splbio(); /* stop instant timeouts */ ! 1282: aha_add_timeout(ccb,xs->timeout); ! 1283: aha_startmbx(ccb->mbx); ! 1284: /***********************************************\ ! 1285: * Usually return SUCCESSFULLY QUEUED * ! 1286: \***********************************************/ ! 1287: splx(s); ! 1288: if(scsi_debug & TRACEINTERRUPTS) ! 1289: printf("sent "); ! 1290: return(SUCCESSFULLY_QUEUED); ! 1291: } ! 1292: aha_startmbx(ccb->mbx); ! 1293: if(scsi_debug & TRACEINTERRUPTS) ! 1294: printf("cmd_sent, waiting "); ! 1295: /***********************************************\ ! 1296: * If we can't use interrupts, poll on completion* ! 1297: \***********************************************/ ! 1298: { ! 1299: int done = 0; ! 1300: int count = delaycount * xs->timeout / AHA_SCSI_TIMEOUT_FUDGE; ! 1301: while((!done) && count) ! 1302: { ! 1303: i=0; ! 1304: while ( (!done) && i<AHA_MBX_SIZE) ! 1305: { ! 1306: if ((aha_mbx[unit].mbi[i].stat != AHA_MBI_FREE ) ! 1307: && (PHYSTOKV(_3btol(aha_mbx[unit].mbi[i].ccb_addr) ! 1308: == (int)ccb))) ! 1309: { ! 1310: aha_mbx[unit].mbi[i].stat = AHA_MBI_FREE; ! 1311: aha_done(unit,ccb); ! 1312: done++; ! 1313: } ! 1314: i++; ! 1315: } ! 1316: count--; ! 1317: } ! 1318: if (!count) ! 1319: { ! 1320: if (!(xs->flags & SCSI_SILENT)) ! 1321: printf("cmd fail\n"); ! 1322: aha_abortmbx(ccb->mbx); ! 1323: count = delaycount * 2000 / AHA_SCSI_TIMEOUT_FUDGE; ! 1324: while((!done) && count) ! 1325: { ! 1326: i=0; ! 1327: while ( (!done) && i<AHA_MBX_SIZE) ! 1328: { ! 1329: if ((aha_mbx[unit].mbi[i].stat != AHA_MBI_FREE ) ! 1330: && (PHYSTOKV(_3btol(aha_mbx[unit].mbi[i].ccb_addr) ! 1331: == (int)ccb))) ! 1332: { ! 1333: aha_mbx[unit].mbi[i].stat = AHA_MBI_FREE; ! 1334: aha_done(unit,ccb); ! 1335: done++; ! 1336: } ! 1337: i++; ! 1338: } ! 1339: count--; ! 1340: } ! 1341: if(!count) ! 1342: { ! 1343: printf("abort failed in wait\n"); ! 1344: ccb->mbx->cmd = AHA_MBO_FREE; ! 1345: } ! 1346: aha_free_ccb(unit,ccb,flags); ! 1347: ahaintr(unit); ! 1348: xs->error = XS_DRIVER_STUFFUP; ! 1349: return(HAD_ERROR); ! 1350: } ! 1351: ahaintr(unit); ! 1352: if(xs->error) return(HAD_ERROR); ! 1353: return(COMPLETE); ! 1354: ! 1355: } ! 1356: } ! 1357: /***************************************************************\ ! 1358: * try each speed in turn, when we find one that works, use * ! 1359: * the NEXT one for a safety margin, unless that doesn't exist * ! 1360: * or doesn't work. returns the nSEC value of the time used * ! 1361: * or 0 if it could get a working speed ( or the NEXT speed * ! 1362: * failed) * ! 1363: \***************************************************************/ ! 1364: ! 1365: int aha_set_bus_speed(unit) ! 1366: int unit; ! 1367: { ! 1368: int speed; ! 1369: int retval,retval2; ! 1370: ! 1371: #ifdef EISA ! 1372: speed = 0; /* start at the fastest */ ! 1373: #else EISA ! 1374: speed = 1; /* 100 ns can crash some ISA busses (!?!) */ ! 1375: #endif EISA ! 1376: while (1) ! 1377: { ! 1378: retval = aha_bus_speed_check(unit,speed); ! 1379: if(retval == HAD_ERROR) ! 1380: { ! 1381: printf("no working bus speed!!!\n"); ! 1382: return(0); ! 1383: } ! 1384: if(retval == 0) ! 1385: { ! 1386: speed++; ! 1387: } ! 1388: else /* Go one slower to be safe */ ! 1389: { /* unless eisa at 100 ns.. trust it */ ! 1390: if(speed != 0) ! 1391: { ! 1392: speed++; ! 1393: } ! 1394: printf("%d nSEC ok, use ",retval); ! 1395: retval2 = aha_bus_speed_check(unit,speed); ! 1396: if(retval2 == HAD_ERROR) /* retval is slowest already */ ! 1397: { ! 1398: printf("marginal "); ! 1399: retval2 = retval; ! 1400: } ! 1401: if(retval2) ! 1402: { ! 1403: printf("%d nSEC ",retval2); ! 1404: return(retval2); ! 1405: } ! 1406: else ! 1407: { ! 1408: printf(".. slower failed, abort.\n",retval); ! 1409: return(0); ! 1410: } ! 1411: ! 1412: } ! 1413: } ! 1414: } ! 1415: ! 1416: /***************************************************************\ ! 1417: * Set the DMA speed to the Nth speed and try an xfer. If it * ! 1418: * fails return 0, if it succeeds return the nSec value selected * ! 1419: * If there is no such speed return HAD_ERROR. * ! 1420: \***************************************************************/ ! 1421: static struct bus_speed ! 1422: { ! 1423: char arg; ! 1424: int nsecs; ! 1425: }aha_bus_speeds[] = ! 1426: { ! 1427: {0x88,100}, ! 1428: {0x99,150}, ! 1429: {0xaa,200}, ! 1430: {0xbb,250}, ! 1431: {0xcc,300}, ! 1432: {0xdd,350}, ! 1433: {0xee,400}, ! 1434: {0xff,450} ! 1435: }; ! 1436: static char aha_test_string[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890abcdefghijklmnopqrstuvwxyz!@"; ! 1437: ! 1438: int aha_bus_speed_check(unit,speed) ! 1439: int unit,speed; ! 1440: { ! 1441: int numspeeds = sizeof(aha_bus_speeds)/sizeof(struct bus_speed); ! 1442: u_char ad[3]; ! 1443: ! 1444: /*******************************************************\ ! 1445: * Check we have such an entry * ! 1446: \*******************************************************/ ! 1447: if(speed >= numspeeds) return(HAD_ERROR); /* illegal speed */ ! 1448: ! 1449: /*******************************************************\ ! 1450: * Set the dma-speed * ! 1451: \*******************************************************/ ! 1452: aha_cmd(unit,1, 0, 0, 0, AHA_SPEED_SET,aha_bus_speeds[speed].arg); ! 1453: ! 1454: /*******************************************************\ ! 1455: * put the test data into the buffer and calculate * ! 1456: * it's address. Read it onto the board * ! 1457: \*******************************************************/ ! 1458: strcpy(aha_scratch_buf,aha_test_string); ! 1459: lto3b(KVTOPHYS(aha_scratch_buf),ad); ! 1460: ! 1461: aha_cmd(unit,3, 0, 0, 0, AHA_WRITE_FIFO, ad[0], ad[1], ad[2]); ! 1462: ! 1463: /*******************************************************\ ! 1464: * clear the buffer then copy the contents back from the * ! 1465: * board. * ! 1466: \*******************************************************/ ! 1467: bzero(aha_scratch_buf,54); /* 54 bytes transfered by test */ ! 1468: ! 1469: aha_cmd(unit,3, 0, 0, 0, AHA_READ_FIFO, ad[0], ad[1], ad[2]); ! 1470: ! 1471: /*******************************************************\ ! 1472: * Compare the original data and the final data and * ! 1473: * return the correct value depending upon the result * ! 1474: \*******************************************************/ ! 1475: if(strcmp(aha_test_string,aha_scratch_buf)) ! 1476: { /* copy failed.. assume too fast */ ! 1477: return(0); ! 1478: } ! 1479: else ! 1480: { /* copy succeded assume speed ok */ ! 1481: return(aha_bus_speeds[speed].nsecs); ! 1482: } ! 1483: } ! 1484: ! 1485: ! 1486: /* ! 1487: * +----------+ +----------+ +----------+ ! 1488: * aha_soonest--->| later |--->| later|--->| later|-->0 ! 1489: * | [Delta] | | [Delta] | | [Delta] | ! 1490: * 0<---|sooner |<---|sooner |<---|sooner |<---aha_latest ! 1491: * +----------+ +----------+ +----------+ ! 1492: * ! 1493: * aha_furtherest = sum(Delta[1..n]) ! 1494: */ ! 1495: aha_add_timeout(ccb,time) ! 1496: struct aha_ccb *ccb; ! 1497: int time; ! 1498: { ! 1499: int timeprev; ! 1500: struct aha_ccb *prev; ! 1501: int s = splbio(); ! 1502: ! 1503: if(prev = aha_latest) /* yes, an assign */ ! 1504: { ! 1505: timeprev = aha_furtherest; ! 1506: } ! 1507: else ! 1508: { ! 1509: timeprev = 0; ! 1510: } ! 1511: while(prev && (timeprev > time)) ! 1512: { ! 1513: timeprev -= prev->delta; ! 1514: prev = prev->sooner; ! 1515: } ! 1516: if(prev) ! 1517: { ! 1518: ccb->delta = time - timeprev; ! 1519: if( ccb->later = prev->later) /* yes an assign */ ! 1520: { ! 1521: ccb->later->sooner = ccb; ! 1522: ccb->later->delta -= ccb->delta; ! 1523: } ! 1524: else ! 1525: { ! 1526: aha_furtherest = time; ! 1527: aha_latest = ccb; ! 1528: } ! 1529: ccb->sooner = prev; ! 1530: prev->later = ccb; ! 1531: } ! 1532: else ! 1533: { ! 1534: if( ccb->later = aha_soonest) /* yes, an assign*/ ! 1535: { ! 1536: ccb->later->sooner = ccb; ! 1537: ccb->later->delta -= time; ! 1538: } ! 1539: else ! 1540: { ! 1541: aha_furtherest = time; ! 1542: aha_latest = ccb; ! 1543: } ! 1544: ccb->delta = time; ! 1545: ccb->sooner = (struct aha_ccb *)0; ! 1546: aha_soonest = ccb; ! 1547: } ! 1548: splx(s); ! 1549: } ! 1550: ! 1551: aha_remove_timeout(ccb) ! 1552: struct aha_ccb *ccb; ! 1553: { ! 1554: int s = splbio(); ! 1555: ! 1556: if(ccb->sooner) ! 1557: { ! 1558: ccb->sooner->later = ccb->later; ! 1559: } ! 1560: else ! 1561: { ! 1562: aha_soonest = ccb->later; ! 1563: } ! 1564: if(ccb->later) ! 1565: { ! 1566: ccb->later->sooner = ccb->sooner; ! 1567: ccb->later->delta += ccb->delta; ! 1568: } ! 1569: else ! 1570: { ! 1571: aha_latest = ccb->sooner; ! 1572: aha_furtherest -= ccb->delta; ! 1573: } ! 1574: ccb->sooner = ccb->later = (struct aha_ccb *)0; ! 1575: splx(s); ! 1576: } ! 1577: ! 1578: ! 1579: extern int hz; ! 1580: #define ONETICK 500 /* milliseconds */ ! 1581: #define SLEEPTIME ((hz * 1000) / ONETICK) ! 1582: aha_timeout(arg) ! 1583: int arg; ! 1584: { ! 1585: struct aha_ccb *ccb; ! 1586: int unit; ! 1587: int s = splbio(); ! 1588: ! 1589: while( ccb = aha_soonest ) ! 1590: { ! 1591: if(ccb->delta <= ONETICK) ! 1592: /***********************************************\ ! 1593: * It has timed out, we need to do some work * ! 1594: \***********************************************/ ! 1595: { ! 1596: unit = ccb->xfer->adapter; ! 1597: printf("aha%d: device %d timed out ",unit ! 1598: ,ccb->xfer->targ); ! 1599: ! 1600: /***************************************\ ! 1601: * Unlink it from the queue * ! 1602: \***************************************/ ! 1603: aha_remove_timeout(ccb); ! 1604: ! 1605: /***************************************\ ! 1606: * If The ccb's mbx is not free, then * ! 1607: * the board has gone south * ! 1608: \***************************************/ ! 1609: if(ccb->mbx->cmd != AHA_MBO_FREE) ! 1610: { ! 1611: printf("aha%d not taking commands!\n" ! 1612: ,unit); ! 1613: Debugger(); ! 1614: } ! 1615: /***************************************\ ! 1616: * If it has been through before, then * ! 1617: * a previous abort has failed, don't * ! 1618: * try abort again * ! 1619: \***************************************/ ! 1620: if(ccb->flags == CCB_ABORTED) /* abort timed out */ ! 1621: { ! 1622: printf(" AGAIN\n"); ! 1623: ccb->xfer->retries = 0; /* I MEAN IT ! */ ! 1624: ccb->host_stat = AHA_ABORTED; ! 1625: aha_done(unit,ccb); ! 1626: } ! 1627: else /* abort the operation that has timed out */ ! 1628: { ! 1629: printf("\n"); ! 1630: aha_abortmbx(ccb->mbx); ! 1631: /* 2 secs for the abort */ ! 1632: aha_add_timeout(ccb,2000 + ONETICK); ! 1633: ccb->flags = CCB_ABORTED; ! 1634: } ! 1635: } ! 1636: else ! 1637: /***********************************************\ ! 1638: * It has not timed out, adjust and leave * ! 1639: \***********************************************/ ! 1640: { ! 1641: ccb->delta -= ONETICK; ! 1642: aha_furtherest -= ONETICK; ! 1643: break; ! 1644: } ! 1645: } ! 1646: splx(s); ! 1647: timeout(aha_timeout,arg,SLEEPTIME); ! 1648: }
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