Annotation of sys/arch/sparc/dev/xdreg.h, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: xdreg.h,v 1.5 2007/05/25 21:27:15 krw Exp $ */
! 2: /* $NetBSD: xdreg.h,v 1.3 1996/03/31 22:38:54 pk Exp $ */
! 3:
! 4: /*
! 5: *
! 6: * Copyright (c) 1995 Charles D. Cranor
! 7: * All rights reserved.
! 8: *
! 9: * Redistribution and use in source and binary forms, with or without
! 10: * modification, are permitted provided that the following conditions
! 11: * are met:
! 12: * 1. Redistributions of source code must retain the above copyright
! 13: * notice, this list of conditions and the following disclaimer.
! 14: * 2. Redistributions in binary form must reproduce the above copyright
! 15: * notice, this list of conditions and the following disclaimer in the
! 16: * documentation and/or other materials provided with the distribution.
! 17: * 3. All advertising materials mentioning features or use of this software
! 18: * must display the following acknowledgement:
! 19: * This product includes software developed by Charles D. Cranor.
! 20: * 4. The name of the author may not be used to endorse or promote products
! 21: * derived from this software without specific prior written permission.
! 22: *
! 23: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
! 24: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
! 25: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
! 26: * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
! 27: * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
! 28: * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
! 29: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
! 30: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
! 31: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
! 32: * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
! 33: */
! 34:
! 35: /*
! 36: * x d r e g . h
! 37: *
! 38: * this file contains the description of the Xylogics 753/7053's hardware
! 39: * data structures.
! 40: *
! 41: * author: Chuck Cranor <chuck@ccrc.wustl.edu>
! 42: */
! 43:
! 44: #define XDC_MAXDEV 4 /* max devices per controller */
! 45: #define XDC_RESETUSEC 1000000 /* max time for xdc reset (page 21 says 1sec) */
! 46: #define XDC_MAXIOPB 31 /* max number of iopbs that can be active */
! 47: #define XDC_MAXTIME 4*1000000 /* four seconds before we give up and reset */
! 48: #define XDC_MAXTRIES 4 /* max number of times to retry an operation */
! 49: #define XDC_THROTTLE 32 /* dma throttle */
! 50: #define XDC_INTERLEAVE 0 /* interleave (for format param) */
! 51: #define XDC_DPARAM 0 /* dparam (drive param) XDDP_EC32 or 0 */
! 52:
! 53: /*
! 54: * xdc device interface
! 55: * (lives in VME address space)
! 56: */
! 57:
! 58: struct xdc {
! 59: volatile u_char filler0;
! 60: volatile u_char xdc_iopbaddr0; /* iopb byte 0 (LSB) */
! 61: volatile u_char filler1;
! 62: volatile u_char xdc_iopbaddr1; /* iopb byte 1 */
! 63: volatile u_char filler2;
! 64: volatile u_char xdc_iopbaddr2; /* iopb byte 2 */
! 65: volatile u_char filler3;
! 66: volatile u_char xdc_iopbaddr3; /* iopb byte 3 (MSB) */
! 67: volatile u_char filler4;
! 68: volatile u_char xdc_iopbamod; /* iopb address modifier */
! 69: volatile u_char filler5;
! 70: volatile u_char xdc_csr; /* control and status register */
! 71: volatile u_char filler6;
! 72: volatile u_char xdc_f_err; /* fatal error register */
! 73: };
! 74:
! 75: /*
! 76: * xdc_iopbamod: addressing modes
! 77: * When doing DMA, if the maximum address of the buffer is greater than
! 78: * 24 bits then you must use the 32 bit mode. Note that on many systems
! 79: * (e.g. sun-4/300) DVMA space is smaller than 24 bits, so there is no
! 80: * need for the 32 bit mode. However, the 32-bit mode hooks are in
! 81: * the driver in case it ever gets ported to an environment that needs it.
! 82: */
! 83:
! 84: #define XDC_ADDRMOD 0x3d /* standard address modifer, 24 bit max */
! 85: #define XDC_ADDRMOD32 0x0d /* 32 bit version above */
! 86:
! 87: /*
! 88: * xdc_csr
! 89: */
! 90:
! 91: #define XDC_RMAINTMD 0x80 /* reserved maintenance mode (write) */
! 92: #define XDC_BUSY 0x80 /* busy (read) */
! 93: #define XDC_F_ERROR 0x40 /* fatal error (read) */
! 94: #define XDC_MAINTMOD 0x20 /* maintenance mode (read/write) */
! 95: #define XDC_RESET 0x08 /* soft reset (read/write) */
! 96: #define XDC_ADDIOPB 0x04 /* add iopb/add pending (write) */
! 97: #define XDC_ADDING 0x04 /* iopb add is pending (read) */
! 98: #define XDC_CLRRIO 0x02 /* clear RIO (remove iopb) request (write) */
! 99: #define XDC_REMIOPB 0x02 /* remove iopb (read) */
! 100: #define XDC_RBUSYSEM 0x01 /* register busy semaphore (read/write) */
! 101:
! 102: /*
! 103: * Input/Output Parameter Block (iopb)
! 104: *
! 105: * all controller commands are done via iopb's. to start a command you
! 106: * must do this:
! 107: * [1] allocate space in DVMA space for the iopb
! 108: * [2] fill out all the fields of the iopb
! 109: * [3] check to see if controller can accept an iopb (XDC_ADDING bit clear)
! 110: * [4] put the DVMA address of the iopb in the xdc registers (in vme space)
! 111: * [5] set the XDC_ADDIOPB bit in the xdc csr
! 112: * [6] <command started>
! 113: *
! 114: * when the controller is done with a command it may interrupt (if you
! 115: * ask it to) and it will set the XDC_REMIOPB bit in the csr. the address
! 116: * of the finished iopb will be in the xdc registers. after that is
! 117: * read, set the XDC_CLRRIO to clear the iopb out of memory.
! 118: *
! 119: * the format of the iopb is described in section 4 of the manual.
! 120: */
! 121:
! 122: struct xd_iopb {
! 123: /* section 4.1.1: byte 0 */
! 124: volatile u_char errs:1; /* error summary bit, only valid if
! 125: "done" is set. must clear "done"
! 126: and "errs" bits before starting an
! 127: operation */
! 128: volatile u_char done:1; /* "done" bit */
! 129: volatile u_char chen:1; /* chain enable, "next iopb" is valid,
! 130: note xd returns one iopb at a time */
! 131: volatile u_char sgm:1; /* scatter/gather mode */
! 132: volatile u_char comm:4; /* command number (see table 4-2) */
! 133: #define XDCMD_NOP 0x0 /* no-op */
! 134: #define XDCMD_WR 0x1 /* write */
! 135: #define XDCMD_RD 0x2 /* read */
! 136: #define XDCMD_SK 0x3 /* seek */
! 137: #define XDCMD_RST 0x4 /* drive reset */
! 138: #define XDCMD_WRP 0x5 /* write params */
! 139: #define XDCMD_RDP 0x6 /* read params */
! 140: #define XDCMD_XWR 0x7 /* extended write */
! 141: #define XDCMD_XRD 0x8 /* extended read */
! 142: #define XDCMD_TST 0x9 /* diagnostic tests */
! 143: /* 0xa to 0xf are reserved */
! 144: /* section 4.1.2: byte 1 */
! 145: volatile u_char errno; /* status byte 1 (non-zero if error) */
! 146: /* section 4.1.3: byte 2 */
! 147: volatile u_char status; /* status byte 2 (see below) */
! 148: #define XDST_SR 0x40 /* slipped revolution */
! 149: #define XDST_CSE 0x20 /* count sectors executed */
! 150: #define XDST_WRPT 0x10 /* write protected drive */
! 151: #define XDST_DFLT 0x08 /* disk fault */
! 152: #define XDST_SKER 0x04 /* seek error: >max, or timeout */
! 153: #define XDST_ONCL 0x02 /* on-cylinder */
! 154: #define XDST_DRDY 0x01 /* drive is ready! */
! 155: /* section 4.1.4: byte 3 */
! 156: volatile u_char istat; /* internal status: reserved for xylogics */
! 157: /* section 4.1.5: byte 4 */
! 158: volatile u_char subfun; /* sub-function of command (see below) */
! 159: #define XDFUN_R 0x00 /* XDCMD_SK: report current addr */
! 160: #define XDFUN_SR 0x01 /* XDCMD_SK: seek and report addr */
! 161: #define XDFUN_SRI 0x02 /* XDCMD_SK: start seek, report comp imm */
! 162: #define XDFUN_CTL 0x00 /* XDCMD_{WRP,RDP}: controller params */
! 163: #define XDFUN_DRV 0x80 /* XDCMD_{WRP,RDP}: drive params */
! 164: #define XDFUN_FMT 0x81 /* XDCMD_{WRP,RDP}: format params,XWR form.*/
! 165: #define XDFUN_STX 0xa0 /* XDCMD_RDP: read drive status extended */
! 166: #define XDFUN_THD 0x80 /* XDCMD_{XWR,XRD}: track headers */
! 167: #define XDFUN_VFY 0x81 /* XDCMD_XRD: verify data */
! 168: #define XDFUN_HDR 0x82 /* XDCMD_{XWR,XRD}: header, verify,data, ecc*/
! 169: #define XDFUN_DM 0xa0 /* XDCMD_{XWR,XRD}: defect map */
! 170: #define XDFUN_DMX 0xa1 /* XDCMD_{XWR,XRD}: defect map extended */
! 171: /* section 4.1.6: byte 5 */
! 172: volatile u_char fixd:1; /* fixed media (vs removable) */
! 173: volatile u_char reserved1:4; /* reserved */
! 174: volatile u_char unit:3; /* unit number */
! 175: /* note: 6 to 13 are overloaded (see below) */
! 176: /* section 4.1.7: byte 6 */
! 177: volatile u_char lll:5; /* linked list length */
! 178: volatile u_char intl:3; /* interrupt level */
! 179: /* section 4.1.8: byte 7 */
! 180: volatile u_char intr_vec; /* interrupt vector */
! 181: /* section 4.1.9: bytes 8 and 9 */
! 182: volatile u_short sectcnt; /* sector count (# to xfer) */
! 183: /* section 4.1.10: byte a and b */
! 184: volatile u_short cylno; /* cylinder number */
! 185: /* section 4.1.11: byte c */
! 186: volatile u_char headno; /* head number */
! 187: /* section 4.1.12: byte d */
! 188: volatile u_char sectno; /* sector number */
! 189: /* section 4.1.13: byte e */
! 190: volatile u_char addrmod; /* addr modifier (bits 7,6 must be zero) */
! 191: /* section 4.1.14: byte f */
! 192: volatile u_char naddrmod; /* next (in chain) address iobp ad. modifer */
! 193: /* section 4.1.15: bytes 0x10 to 0x13 */
! 194: volatile u_long daddr; /* DMA data address */
! 195: /* section 4.1.16: bytes 0x14 to 0x17 */
! 196: volatile u_long nextiopb; /* next iopb (in chain) address */
! 197: /* section 4.1.17: bytes 0x18, 0x19 */
! 198: volatile u_short cksum; /* iopb checksum */
! 199: /* section 4.1.18: bytes 0x1a, 0x1b */
! 200: volatile u_short eccpattern; /* ECC pattern word (ecc mode 0) */
! 201: /* section 4.1.19: bytes 0x1c, 0x1d */
! 202: volatile u_short eccoffword; /* ECC offset word (ecc mode 0) */
! 203: };
! 204:
! 205: /*
! 206: * some commands overload bytes 6 to 0x13 of the iopb with different meanings.
! 207: * these commands include:
! 208: * section 4.2: controller parameters
! 209: * section 4.3: drive parameters
! 210: * sectino 4.4: format parameters
! 211: *
! 212: * note that the commands that overload the iopb are not part of the
! 213: * "critical data path" of the driver. so, we handle them by defining
! 214: * alternate iopb structures for these commands... it only costs us an
! 215: * extra pointer.
! 216: */
! 217:
! 218: /*
! 219: * controller parameters iopb: redefines bytes: 8 -> 0xe, 0x10 -> 0x13
! 220: */
! 221:
! 222: struct xd_iopb_ctrl {
! 223: volatile u_char same[8]; /* same as xd_iopb */
! 224: /* section 4.2.1: byte 8 */
! 225: volatile u_char param_a; /* param A (see below) */
! 226: #define XDPA_AUD 0x80 /* auto-update iopb fields when cmd done */
! 227: #define XDPA_TMOD 0x40 /* long-word transfer mode (vs word) */
! 228: #define XDPA_DACF 0x20 /* ignore vme ACFAIL signal */
! 229: #define XDPA_ICS 0x10 /* checksum check (adds 100usec per xfer) */
! 230: #define XDPA_EDT 0x08 /* enable on-board DMA timeout timer */
! 231: #define XDPA_NPRM 0x04 /* enable VME non-priv request mode */
! 232: /* rest must be zero */
! 233: /* section 4.2.2: byte 9 */
! 234: volatile u_char param_b; /* param B (see below) */
! 235: #define XDPB_TDT 0xc0 /* throttle dead time (see 8.11, below) */
! 236: #define XDPB_ROR 0x10 /* release on request */
! 237: #define XDPB_DRA 0x01 /* disable read ahead */
! 238: /* TDT values: */
! 239: #define XDPB_TDT_0USEC 0x00 /* no TDT */
! 240: #define XDPB_TDT_3_2USEC 0x40 /* 3.2 usec */
! 241: #define XDPB_TDT_6_4USEC 0x80 /* 6.4 usec */
! 242: #define XDPB_TDT_12_8USEC 0xc0 /* 12.8 usec */
! 243: /* section 4.2.3: byte a */
! 244: volatile u_char param_c; /* param C (see below) */
! 245: #define XDPC_OVS 0x80 /* over-lapped seek */
! 246: #define XDPC_COP 0x40 /* command optimiziation (elevator alg.) */
! 247: #define XDPC_ASR 0x10 /* auto-seek retry */
! 248: #define XDPC_RBC 0x04 /* retry before correction if ECC error */
! 249: #define XDPC_ECCM 0x03 /* ECC mode (0, 1, and 2) */
! 250: #define XDPC_ECC0 0x00 /* ECC mode 0 */
! 251: #define XDPC_ECC1 0x01 /* ECC mode 1 */
! 252: #define XDPC_ECC2 0x02 /* ECC mode 2 */
! 253: /* section 4.2.4: byte b */
! 254: volatile u_char throttle; /* max dma xfers per master (0==256) */
! 255: /* section 4.2.5: byte c */
! 256: volatile u_char eprom_lvl; /* EPROM release level */
! 257: volatile u_char delay; /* delay (see note below) */
! 258: /* section 4.2.6: byte e */
! 259: volatile u_char ctype; /* controller type */
! 260: #define XDCT_753 0x53 /* xylogic 753/7053 */
! 261: volatile u_char same2; /* byte f: same as xd_iopb */
! 262: /* section 4.2.7: byte 0x10, 0x11 */
! 263: volatile u_short eprom_partno; /* eprom part number */
! 264: /* section 4.2.8: byte 12 */
! 265: volatile u_char eprom_rev; /* eprom revision number */
! 266: };
! 267:
! 268: /*
! 269: * Note on byte 0xd ("delay"): This byte is not documented in the
! 270: * Xylogics manual. However, I contacted Xylogics and found out what
! 271: * it does. The controller sorts read commands into groups of
! 272: * contiguous sectors. After it processes a group of contiguous
! 273: * sectors rather than immediately going on to the next group of
! 274: * contiguous sectors, the controller can delay for a certain amount
! 275: * of time in hopes of getting another cluster of reads in the same
! 276: * area of the disk (thus avoiding a long seek). Byte 0xd controls
! 277: * how long it waits before giving up and going on and doing the next
! 278: * contiguous cluster.
! 279: *
! 280: * it is unclear what unit the delay is in, but it looks like sun
! 281: * uses the value "20" for sun3's, and "0" for sparc, except for the
! 282: * 4/300 (where it is "4"). [see /sys/sundev/xd_conf.c on any 4.1.3
! 283: * machine for how sun configures its controller...]
! 284: */
! 285:
! 286: #define XDC_DELAY_SUN3 20
! 287: #define XDC_DELAY_4_300 4
! 288: #define XDC_DELAY_SPARC 0
! 289:
! 290: /*
! 291: * drive parameters iopb: redefines bytes: 6, 8, 9, a, b, c, d, e
! 292: */
! 293:
! 294: struct xd_iopb_drive {
! 295: volatile u_char same[6]; /* same as xd_iopb */
! 296: /* section 4.3.1: byte 6 */
! 297: volatile u_char dparam_ipl; /* drive params | interrupt level */
! 298: #define XDDP_EC32 0x10 /* 32 bit ECC mode */
! 299: volatile u_char same1; /* byte 7: same */
! 300: /* section 4.3.2: byte 8 */
! 301: volatile u_char maxsect; /* max sector/last head (<= byte d) */
! 302: /* section 4.3.3: byte 9 */
! 303: volatile u_char headoff; /* head offset */
! 304: /* section 4.3.4: bytes 0xa, 0xb */
! 305: volatile u_short maxcyl; /* max cyl (zero based!) */
! 306: /* section 4.3.5: byte 0xc */
! 307: volatile u_char maxhead; /* max head (zero based!) */
! 308: /* section 4.3.6: byte 0xd */
! 309: volatile u_char maxsector; /* max sector of disk (zero based!) */
! 310: /* section 4.3.7: byte 0xe */
! 311: volatile u_char sectpertrk; /* sectors per track, not zero base, no runt*/
! 312: };
! 313:
! 314: /*
! 315: * format parameters iopb: redefines bytes: 6, 8, 9, a, b, c, d, 0x10, 0x11
! 316: */
! 317:
! 318: struct xd_iopb_format {
! 319: volatile u_char same[6]; /* smae as xd_iopb */
! 320: /* section 4.4.1: byte 6 */
! 321: volatile u_char interleave_ipl;/* (interleave << 4) | interrupt level */
! 322: /* interleave ratio 1:1 to 16:1 */
! 323: volatile u_char same1; /* byte 7: same */
! 324: /* section 4.4.2: byte 8 */
! 325: volatile u_char field1; /* >= 1, xylogic says should be 1 */
! 326: #define XDFM_FIELD1 0x01 /* xylogic value */
! 327: /* section 4.4.3: byte 9 */
! 328: volatile u_char field2; /* >0, field1+field2 <= 255 */
! 329: #define XDFM_FIELD2 0x0a /* xylogic value */
! 330: /* section 4.4.4: byte a */
! 331: volatile u_char field3; /* >= field1+field2 */
! 332: #define XDFM_FIELD3 0x1b /* xylogic value */
! 333: /* section 4.4.5: byte b */
! 334: volatile u_char field4; /* field4 */
! 335: #define XDFM_FIELD4 0x14 /* xylogic value */
! 336: /* section 4.4.6: bytes 0xc, 0xd */
! 337: volatile u_short bytespersec; /* bytes per sector */
! 338: #define XDFM_BPS 0x200 /* must be 512! */
! 339: volatile u_char same2[2]; /* bytes e, f */
! 340: /* section 4.4.7: byte 0x10 */
! 341: volatile u_char field6; /* field 6 */
! 342: #define XDFM_FIELD6 0x0a /* xylogic value */
! 343: /* section 4.4.8: byte 0x11 */
! 344: volatile u_char field7; /* field 7, >= 1 */
! 345: #define XDFM_FIELD7 0x03 /* xylogic value */
! 346: };
! 347:
! 348:
! 349: /*
! 350: * errors: errors come from either the fatal error register or the
! 351: * iopb
! 352: */
! 353:
! 354: #define XD_ERA_MASK 0xf0 /* error action mask */
! 355: #define XD_ERA_PROG 0x10 /* program error */
! 356: #define XD_ERA_PRG2 0x20 /* program error */
! 357: #define XD_ERA_SOFT 0x30 /* soft error: we recovered */
! 358: #define XD_ERA_HARD 0x40 /* hard error: retry */
! 359: #define XD_ERA_RSET 0x60 /* hard error: reset, then retry */
! 360: #define XD_ERA_WPRO 0x90 /* write protected */
! 361:
! 362: /* software error codes */
! 363: #define XD_ERR_FAIL 0xff /* general total failure */
! 364: /* no error */
! 365: #define XD_ERR_AOK 0x00 /* success */
! 366: /* non-retryable programming error */
! 367: #define XD_ERR_ICYL 0x10 /* illegal cyl */
! 368: #define XD_ERR_IHD 0x11 /* illegal head */
! 369: #define XD_ERR_ISEC 0x12 /* illegal sector */
! 370: #define XD_ERR_CZER 0x13 /* count zero */
! 371: #define XD_ERR_UIMP 0x14 /* unknown command */
! 372: #define XD_ERR_IF1 0x15 /* illegal field 1 */
! 373: #define XD_ERR_IF2 0x16 /* illegal field 2 */
! 374: #define XD_ERR_IF3 0x17 /* illegal field 3 */
! 375: #define XD_ERR_IF4 0x18 /* illegal field 4 */
! 376: #define XD_ERR_IF5 0x19 /* illegal field 5 */
! 377: #define XD_ERR_IF6 0x1a /* illegal field 6 */
! 378: #define XD_ERR_IF7 0x1b /* illegal field 7 */
! 379: #define XD_ERR_ISG 0x1c /* illegal scatter/gather */
! 380: #define XD_ERR_ISPT 0x1d /* not enough sectors per track */
! 381: #define XD_ERR_ALGN 0x1e /* next iopb allignment error */
! 382: #define XD_ERR_SGAL 0x1f /* scatter gather address alignment error */
! 383: #define XD_ERR_SGEC 0x20 /* scatter gather with auto ECC */
! 384: /* successfully recovered soft errors */
! 385: #define XD_ERR_SECC 0x30 /* soft ecc corrected */
! 386: #define XD_ERR_SIGN 0x31 /* ecc ignored */
! 387: #define XD_ERR_ASEK 0x32 /* auto-seek retry recovered */
! 388: #define XD_ERR_RTRY 0x33 /* soft retry recovered */
! 389: /* hard errors: please retry */
! 390: #define XD_ERR_HECC 0x40 /* hard data ECC */
! 391: #define XD_ERR_NHDR 0x41 /* header not found */
! 392: #define XD_ERR_NRDY 0x42 /* drive not ready */
! 393: #define XD_ERR_TOUT 0x43 /* timeout */
! 394: #define XD_ERR_VTIM 0x44 /* VME DMA timeout */
! 395: #define XD_ERR_DSEQ 0x45 /* disk sequencer error */
! 396: #define XD_ERR_HDEC 0x48 /* header ECC error */
! 397: #define XD_ERR_RVFY 0x49 /* ready verify */
! 398: #define XD_ERR_VFER 0x4a /* fatal VME DMA error */
! 399: #define XD_ERR_VBUS 0x4b /* VME bus error */
! 400: /* hard error: reset and retry */
! 401: #define XD_ERR_DFLT 0x60 /* drive fault */
! 402: #define XD_ERR_HECY 0x61 /* header error/cyl */
! 403: #define XD_ERR_HEHD 0x62 /* header error/head */
! 404: #define XD_ERR_NOCY 0x63 /* not on cylinder */
! 405: #define XD_ERR_SEEK 0x64 /* seek error */
! 406: /* fatal hardware error */
! 407: #define XD_ERR_ILSS 0x70 /* illegal sector size */
! 408: /* misc */
! 409: #define XD_ERR_SEC 0x80 /* soft ecc */
! 410: /* requires manual intervention */
! 411: #define XD_ERR_WPER 0x90 /* write protected */
! 412: /* FATAL errors */
! 413: #define XD_ERR_IRAM 0xe1 /* IRAM self test failed */
! 414: #define XD_ERR_MT3 0xe3 /* maint test 3 failed (DSKCEL RAM) */
! 415: #define XD_ERR_MT4 0xe4 /* maint test 4 failed (Header shift reg) */
! 416: #define XD_ERR_MT5 0xe5 /* maint test 5 failed (VMEDMA regs) */
! 417: #define XD_ERR_MT6 0xe6 /* maint test 6 failed (REGCEL chip) */
! 418: #define XD_ERR_MT7 0xe7 /* maint test 7 failed (buff. parity) */
! 419: #define XD_ERR_MT8 0xe8 /* maint test 8 failed (fifo) */
! 420: #define XD_ERR_IOCK 0xf0 /* iopb checksume miscompare */
! 421: #define XD_ERR_IODM 0xf1 /* iopb dma fatal */
! 422: #define XD_ERR_IOAL 0xf2 /* iopb allignment error */
! 423: #define XD_ERR_FIRM 0xf3 /* firmware error n*/
! 424: #define XD_ERR_MMOD 0xf5 /* illegal maint mode test number */
! 425: #define XD_ERR_ACFL 0xf6 /* ACFAIL asserted */
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