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isp.c revision 1.29
      1 /* $NetBSD: isp.c,v 1.29 1998/12/28 19:10:43 mjacob Exp $ */
      2 /* release_12_28_98_A */
      3 /*
      4  * Machine and OS Independent (well, as best as possible)
      5  * code for the Qlogic ISP SCSI adapters.
      6  *
      7  *---------------------------------------
      8  * Copyright (c) 1997, 1998 by Matthew Jacob
      9  * NASA/Ames Research Center
     10  * All rights reserved.
     11  *---------------------------------------
     12  *
     13  * Redistribution and use in source and binary forms, with or without
     14  * modification, are permitted provided that the following conditions
     15  * are met:
     16  * 1. Redistributions of source code must retain the above copyright
     17  *    notice immediately at the beginning of the file, without modification,
     18  *    this list of conditions, and the following disclaimer.
     19  * 2. Redistributions in binary form must reproduce the above copyright
     20  *    notice, this list of conditions and the following disclaimer in the
     21  *    documentation and/or other materials provided with the distribution.
     22  * 3. The name of the author may not be used to endorse or promote products
     23  *    derived from this software without specific prior written permission.
     24  *
     25  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     26  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     27  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     28  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
     29  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     30  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     31  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     32  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     33  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     34  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     35  * SUCH DAMAGE.
     36  */
     37 
     38 /*
     39  * Inspiration and ideas about this driver are from Erik Moe's Linux driver
     40  * (qlogicisp.c) and Dave Miller's SBus version of same (qlogicisp.c). Some
     41  * ideas dredged from the Solaris driver.
     42  */
     43 
     44 /*
     45  * Include header file appropriate for platform we're building on.
     46  */
     47 
     48 #ifdef	__NetBSD__
     49 #include <dev/ic/isp_netbsd.h>
     50 #endif
     51 #ifdef	__FreeBSD__
     52 #include <dev/isp/isp_freebsd.h>
     53 #endif
     54 #ifdef	__linux__
     55 #include "isp_linux.h"
     56 #endif
     57 
     58 /*
     59  * General defines
     60  */
     61 
     62 #define	MBOX_DELAY_COUNT	1000000 / 100
     63 
     64 /*
     65  * Local static data
     66  */
     67 #ifdef	ISP_TARGET_MODE
     68 static const char tgtiqd[36] = {
     69 	0x03, 0x00, 0x02, 0x02, 0x00, 0x00, 0x00, 0x00,
     70 	0x51, 0x4C, 0x4F, 0x47, 0x49, 0x43, 0x20, 0x20,
     71 #ifdef	__NetBSD__
     72 	0x4E, 0x45, 0x54, 0x42, 0x53, 0x44, 0x20, 0x20,
     73 #else
     74 # ifdef	__FreeBSD__
     75 	0x46, 0x52, 0x45, 0x45, 0x42, 0x52, 0x44, 0x20,
     76 # else
     77 #  ifdef linux
     78 	0x4C, 0x49, 0x4E, 0x55, 0x58, 0x20, 0x20, 0x20,
     79 #  else
     80 #  endif
     81 # endif
     82 #endif
     83 	0x54, 0x41, 0x52, 0x47, 0x45, 0x54, 0x20, 0x20,
     84 	0x20, 0x20, 0x20, 0x31
     85 };
     86 #endif
     87 
     88 
     89 /*
     90  * Local function prototypes.
     91  */
     92 static int isp_parse_async __P((struct ispsoftc *, int));
     93 static int isp_handle_other_response
     94 __P((struct ispsoftc *, ispstatusreq_t *, u_int8_t *));
     95 #ifdef	ISP_TARGET_MODE
     96 static int isp_modify_lun __P((struct ispsoftc *, int, int, int));
     97 static void isp_notify_ack __P((struct ispsoftc *, void *));
     98 static void isp_handle_atio __P((struct ispsoftc *, void *));
     99 static void isp_handle_atio2 __P((struct ispsoftc *, void *));
    100 static void isp_handle_ctio __P((struct ispsoftc *, void *));
    101 static void isp_handle_ctio2 __P((struct ispsoftc *, void *));
    102 #endif
    103 static void isp_parse_status
    104 __P((struct ispsoftc *, ispstatusreq_t *, ISP_SCSI_XFER_T *));
    105 static void isp_fibre_init __P((struct ispsoftc *));
    106 static void isp_fw_state __P((struct ispsoftc *));
    107 static void isp_dumpregs __P((struct ispsoftc *, const char *));
    108 static void isp_dumpxflist __P((struct ispsoftc *));
    109 static void isp_prtstst __P((ispstatusreq_t *));
    110 static char *isp2100_fw_statename __P((int));
    111 static void isp_mboxcmd __P((struct ispsoftc *, mbreg_t *));
    112 
    113 static void isp_update  __P((struct ispsoftc *));
    114 static void isp_setdfltparm __P((struct ispsoftc *));
    115 static int isp_read_nvram __P((struct ispsoftc *));
    116 static void isp_rdnvram_word __P((struct ispsoftc *, int, u_int16_t *));
    117 
    118 /*
    119  * Reset Hardware.
    120  *
    121  * Hit the chip over the head, download new f/w.
    122  *
    123  * Locking done elsewhere.
    124  */
    125 void
    126 isp_reset(isp)
    127 	struct ispsoftc *isp;
    128 {
    129 	static char once = 1;
    130 	mbreg_t mbs;
    131 	int loops, i, dodnld = 1;
    132 	char *revname;
    133 
    134 	isp->isp_state = ISP_NILSTATE;
    135 
    136 	/*
    137 	 * Basic types (SCSI, FibreChannel and PCI or SBus)
    138 	 * have been set in the MD code. We figure out more
    139 	 * here.
    140 	 */
    141 	isp->isp_dblev = DFLT_DBLEVEL;
    142 	if (isp->isp_type & ISP_HA_FC) {
    143 		revname = "2100";
    144 	} else {
    145 		sdparam *sdp = isp->isp_param;
    146 
    147 		int rev = ISP_READ(isp, BIU_CONF0) & BIU_CONF0_HW_MASK;
    148 		switch (rev) {
    149 		default:
    150 			PRINTF("%s: unknown chip rev. 0x%x- assuming a 1020\n",
    151 			    isp->isp_name, rev);
    152 			/* FALLTHROUGH */
    153 		case 1:
    154 			revname = "1020";
    155 			isp->isp_type = ISP_HA_SCSI_1020;
    156 			sdp->isp_clock = 40;
    157 			break;
    158 		case 2:
    159 			/*
    160 			 * Some 1020A chips are Ultra Capable, but don't
    161 			 * run the clock rate up for that unless told to
    162 			 * do so by the Ultra Capable bits being set.
    163 			 */
    164 			revname = "1020A";
    165 			isp->isp_type = ISP_HA_SCSI_1020A;
    166 			sdp->isp_clock = 40;
    167 			break;
    168 		case 3:
    169 			revname = "1040";
    170 			isp->isp_type = ISP_HA_SCSI_1040;
    171 			sdp->isp_clock = 60;
    172 			break;
    173 		case 4:
    174 			revname = "1040A";
    175 			isp->isp_type = ISP_HA_SCSI_1040A;
    176 			sdp->isp_clock = 60;
    177 			break;
    178 		case 5:
    179 			revname = "1040B";
    180 			isp->isp_type = ISP_HA_SCSI_1040B;
    181 			sdp->isp_clock = 60;
    182 			break;
    183 		}
    184 		/*
    185 		 * Try and figure out if we're connected to a differential bus.
    186 		 * You have to pause the RISC processor to read SXP registers.
    187 		 */
    188 		ISP_WRITE(isp, HCCR, HCCR_CMD_PAUSE);
    189 		i = 100;
    190 		while ((ISP_READ(isp, HCCR) & HCCR_PAUSE) == 0) {
    191 			SYS_DELAY(20);
    192 			if (--i == 0) {
    193 				PRINTF("%s: unable to pause RISC processor\n",
    194 				    isp->isp_name);
    195 				i = -1;
    196 				break;
    197 			}
    198 		}
    199 		if (i > 0) {
    200 			if (isp->isp_bustype != ISP_BT_SBUS) {
    201 				ISP_SETBITS(isp, BIU_CONF1, BIU_PCI_CONF1_SXP);
    202 			}
    203 			if (ISP_READ(isp, SXP_PINS_DIFF) & SXP_PINS_DIFF_MODE) {
    204 				IDPRINTF(2, ("%s: Differential Mode Set\n",
    205 				    isp->isp_name));
    206 				sdp->isp_diffmode = 1;
    207 			} else {
    208 				sdp->isp_diffmode = 0;
    209 			}
    210 
    211 			if (isp->isp_bustype != ISP_BT_SBUS) {
    212 				ISP_CLRBITS(isp, BIU_CONF1, BIU_PCI_CONF1_SXP);
    213 			}
    214 
    215 			/*
    216 			 * Figure out whether we're ultra capable.
    217 			 */
    218 			i = ISP_READ(isp, RISC_PSR);
    219 			if (isp->isp_bustype != ISP_BT_SBUS) {
    220 				i &= RISC_PSR_PCI_ULTRA;
    221 			} else {
    222 				i &= RISC_PSR_SBUS_ULTRA;
    223 			}
    224 			if (i) {
    225 				IDPRINTF(2, ("%s: Ultra Mode Capable\n",
    226 				    isp->isp_name));
    227 				sdp->isp_clock = 60;
    228 			} else {
    229 				sdp->isp_clock = 40;
    230 			}
    231 			/*
    232 			 * Restart processor
    233 			 */
    234 			ISP_WRITE(isp, HCCR, HCCR_CMD_RELEASE);
    235 		}
    236 		/*
    237 		 * Machine dependent clock (if set) overrides
    238 		 * our generic determinations.
    239 		 */
    240 		if (isp->isp_mdvec->dv_clock) {
    241 			if (isp->isp_mdvec->dv_clock < sdp->isp_clock) {
    242 				sdp->isp_clock = isp->isp_mdvec->dv_clock;
    243 			}
    244 		}
    245 	}
    246 
    247 	/*
    248 	 * Do MD specific pre initialization
    249 	 */
    250 	ISP_RESET0(isp);
    251 
    252 	if (once == 1) {
    253 		once = 0;
    254 		/*
    255 		 * Get the current running firmware revision out of the
    256 		 * chip before we hit it over the head (if this is our
    257 		 * first time through). Note that we store this as the
    258 		 * 'ROM' firmware revision- which it may not be. In any
    259 		 * case, we don't really use this yet, but we may in
    260 		 * the future.
    261 		 */
    262 		mbs.param[0] = MBOX_ABOUT_FIRMWARE;
    263 		isp_mboxcmd(isp, &mbs);
    264 		if (mbs.param[0] != MBOX_COMMAND_COMPLETE) {
    265 			IDPRINTF(3, ("%s: initial ABOUT FIRMWARE command "
    266 			    "failed\n", isp->isp_name));
    267 		} else {
    268 			isp->isp_romfw_rev =
    269 			    (((u_int16_t) mbs.param[1]) << 10) + mbs.param[2];
    270 		}
    271 	}
    272 
    273 	/*
    274 	 * Hit the chip over the head with hammer,
    275 	 * and give the ISP a chance to recover.
    276 	 */
    277 
    278 	if (isp->isp_type & ISP_HA_SCSI) {
    279 		ISP_WRITE(isp, BIU_ICR, BIU_ICR_SOFT_RESET);
    280 		/*
    281 		 * A slight delay...
    282 		 */
    283 		SYS_DELAY(100);
    284 
    285 		/*
    286 		 * Clear data && control DMA engines.
    287 		 */
    288 		ISP_WRITE(isp, CDMA_CONTROL,
    289 		      DMA_CNTRL_CLEAR_CHAN | DMA_CNTRL_RESET_INT);
    290 		ISP_WRITE(isp, DDMA_CONTROL,
    291 		      DMA_CNTRL_CLEAR_CHAN | DMA_CNTRL_RESET_INT);
    292 	} else {
    293 		ISP_WRITE(isp, BIU2100_CSR, BIU2100_SOFT_RESET);
    294 		/*
    295 		 * A slight delay...
    296 		 */
    297 		SYS_DELAY(100);
    298 		ISP_WRITE(isp, CDMA2100_CONTROL,
    299 			DMA_CNTRL2100_CLEAR_CHAN | DMA_CNTRL2100_RESET_INT);
    300 		ISP_WRITE(isp, TDMA2100_CONTROL,
    301 			DMA_CNTRL2100_CLEAR_CHAN | DMA_CNTRL2100_RESET_INT);
    302 		ISP_WRITE(isp, RDMA2100_CONTROL,
    303 			DMA_CNTRL2100_CLEAR_CHAN | DMA_CNTRL2100_RESET_INT);
    304 	}
    305 
    306 	/*
    307 	 * Wait for ISP to be ready to go...
    308 	 */
    309 	loops = MBOX_DELAY_COUNT;
    310 	for (;;) {
    311 		if (isp->isp_type & ISP_HA_SCSI) {
    312 			if (!(ISP_READ(isp, BIU_ICR) & BIU_ICR_SOFT_RESET))
    313 				break;
    314 		} else {
    315 			if (!(ISP_READ(isp, BIU2100_CSR) & BIU2100_SOFT_RESET))
    316 				break;
    317 		}
    318 		SYS_DELAY(100);
    319 		if (--loops < 0) {
    320 			isp_dumpregs(isp, "chip reset timed out");
    321 			return;
    322 		}
    323 	}
    324 	/*
    325 	 * More initialization
    326 	 */
    327 	if (isp->isp_type & ISP_HA_SCSI) {
    328 		ISP_WRITE(isp, BIU_CONF1, 0);
    329 	} else {
    330 		ISP_WRITE(isp, BIU2100_CSR, 0);
    331 		/*
    332 		 * All 2100's are 60Mhz with fast rams onboard.
    333 		 */
    334 		ISP_WRITE(isp, RISC_MTR2100, 0x1212);
    335 	}
    336 
    337 	ISP_WRITE(isp, HCCR, HCCR_CMD_RESET);
    338 	SYS_DELAY(100);
    339 
    340 	if (isp->isp_type & ISP_HA_SCSI) {
    341 		ISP_SETBITS(isp, BIU_CONF1, isp->isp_mdvec->dv_conf1);
    342 		if (isp->isp_mdvec->dv_conf1 & BIU_BURST_ENABLE) {
    343 			ISP_SETBITS(isp, CDMA_CONF, DMA_ENABLE_BURST);
    344 			ISP_SETBITS(isp, DDMA_CONF, DMA_ENABLE_BURST);
    345 		}
    346 	}
    347 	ISP_WRITE(isp, HCCR, HCCR_CMD_RELEASE); /* release paused processor */
    348 
    349 	/*
    350 	 * Do MD specific post initialization
    351 	 */
    352 	ISP_RESET1(isp);
    353 
    354 	/*
    355 	 * Enable interrupts
    356 	 */
    357 	ENABLE_INTS(isp);
    358 
    359 	/*
    360 	 * Do some sanity checking.
    361 	 */
    362 	mbs.param[0] = MBOX_NO_OP;
    363 	isp_mboxcmd(isp, &mbs);
    364 	if (mbs.param[0] != MBOX_COMMAND_COMPLETE) {
    365 		isp_dumpregs(isp, "NOP test failed");
    366 		return;
    367 	}
    368 
    369 	if (isp->isp_type & ISP_HA_SCSI) {
    370 		mbs.param[0] = MBOX_MAILBOX_REG_TEST;
    371 		mbs.param[1] = 0xdead;
    372 		mbs.param[2] = 0xbeef;
    373 		mbs.param[3] = 0xffff;
    374 		mbs.param[4] = 0x1111;
    375 		mbs.param[5] = 0xa5a5;
    376 		isp_mboxcmd(isp, &mbs);
    377 		if (mbs.param[0] != MBOX_COMMAND_COMPLETE) {
    378 			isp_dumpregs(isp,
    379 				"Mailbox Register test didn't complete");
    380 			return;
    381 		}
    382 		if (mbs.param[1] != 0xdead || mbs.param[2] != 0xbeef ||
    383 		    mbs.param[3] != 0xffff || mbs.param[4] != 0x1111 ||
    384 		    mbs.param[5] != 0xa5a5) {
    385 			isp_dumpregs(isp, "Register Test Failed");
    386 			return;
    387 		}
    388 
    389 	}
    390 
    391 	/*
    392 	 * Download new Firmware, unless requested not to do so.
    393 	 * This is made slightly trickier in some cases where the
    394 	 * firmware of the ROM revision is newer than the revision
    395 	 * compiled into the driver. So, where we used to compare
    396 	 * versions of our f/w and the ROM f/w, now we just see
    397 	 * whether we have f/w at all and whether a config flag
    398 	 * has disabled our download.
    399 	 */
    400 	if ((isp->isp_mdvec->dv_fwlen == 0) ||
    401 	    (isp->isp_confopts & ISP_CFG_NORELOAD)) {
    402 		dodnld = 0;
    403 	}
    404 
    405 	if (dodnld) {
    406 		for (i = 0; i < isp->isp_mdvec->dv_fwlen; i++) {
    407 			mbs.param[0] = MBOX_WRITE_RAM_WORD;
    408 			mbs.param[1] = isp->isp_mdvec->dv_codeorg + i;
    409 			mbs.param[2] = isp->isp_mdvec->dv_ispfw[i];
    410 			isp_mboxcmd(isp, &mbs);
    411 			if (mbs.param[0] != MBOX_COMMAND_COMPLETE) {
    412 				isp_dumpregs(isp, "f/w download failed");
    413 				return;
    414 			}
    415 		}
    416 
    417 		if (isp->isp_mdvec->dv_fwlen) {
    418 			/*
    419 			 * Verify that it downloaded correctly.
    420 			 */
    421 			mbs.param[0] = MBOX_VERIFY_CHECKSUM;
    422 			mbs.param[1] = isp->isp_mdvec->dv_codeorg;
    423 			isp_mboxcmd(isp, &mbs);
    424 			if (mbs.param[0] != MBOX_COMMAND_COMPLETE) {
    425 				isp_dumpregs(isp, "ram checksum failure");
    426 				return;
    427 			}
    428 		}
    429 	} else {
    430 		IDPRINTF(3, ("%s: skipping f/w download\n", isp->isp_name));
    431 	}
    432 
    433 	/*
    434 	 * Now start it rolling.
    435 	 *
    436 	 * If we didn't actually download f/w,
    437 	 * we still need to (re)start it.
    438 	 */
    439 
    440 	mbs.param[0] = MBOX_EXEC_FIRMWARE;
    441 	mbs.param[1] = isp->isp_mdvec->dv_codeorg;
    442 	isp_mboxcmd(isp, &mbs);
    443 
    444 	if (isp->isp_type & ISP_HA_SCSI) {
    445 		sdparam *sdp = isp->isp_param;
    446 		/*
    447 		 * Set CLOCK RATE, but only if asked to.
    448 		 */
    449 		if (sdp->isp_clock) {
    450 			mbs.param[0] = MBOX_SET_CLOCK_RATE;
    451 			mbs.param[1] = sdp->isp_clock;
    452 			isp_mboxcmd(isp, &mbs);
    453 			if (mbs.param[0] != MBOX_COMMAND_COMPLETE) {
    454 				isp_dumpregs(isp, "failed to set CLOCKRATE");
    455 				/* but continue */
    456 			} else {
    457 				IDPRINTF(3, ("%s: setting input clock to %d\n",
    458 				    isp->isp_name, sdp->isp_clock));
    459 			}
    460 		}
    461 	}
    462 	mbs.param[0] = MBOX_ABOUT_FIRMWARE;
    463 	isp_mboxcmd(isp, &mbs);
    464 	if (mbs.param[0] != MBOX_COMMAND_COMPLETE) {
    465 		isp_dumpregs(isp, "ABOUT FIRMWARE command failed");
    466 		return;
    467 	}
    468 	PRINTF("%s: Board Revision %s, %s F/W Revision %d.%d\n",
    469 		isp->isp_name, revname, dodnld? "loaded" : "resident",
    470 		mbs.param[1], mbs.param[2]);
    471 	isp->isp_fwrev = (((u_int16_t) mbs.param[1]) << 10) + mbs.param[2];
    472 	if (isp->isp_romfw_rev && dodnld) {
    473 		PRINTF("%s: Last F/W revision was %d.%d\n", isp->isp_name,
    474 		    isp->isp_romfw_rev >> 10, isp->isp_romfw_rev & 0x3ff);
    475 	}
    476 	isp_fw_state(isp);
    477 	isp->isp_state = ISP_RESETSTATE;
    478 }
    479 
    480 /*
    481  * Initialize Hardware to known state
    482  *
    483  * Locks are held before coming here.
    484  */
    485 
    486 void
    487 isp_init(isp)
    488 	struct ispsoftc *isp;
    489 {
    490 	sdparam *sdp;
    491 	mbreg_t mbs;
    492 	int tgt;
    493 
    494 	/*
    495 	 * Must do first.
    496 	 */
    497 	isp_setdfltparm(isp);
    498 
    499 	/*
    500 	 * If we're fibre, we have a completely different
    501 	 * initialization method.
    502 	 */
    503 
    504 	if (isp->isp_type & ISP_HA_FC) {
    505 		isp_fibre_init(isp);
    506 		return;
    507 	}
    508 	sdp = isp->isp_param;
    509 
    510 	/*
    511 	 * Set (possibly new) Initiator ID.
    512 	 */
    513 	mbs.param[0] = MBOX_SET_INIT_SCSI_ID;
    514 	mbs.param[1] = sdp->isp_initiator_id;
    515 	isp_mboxcmd(isp, &mbs);
    516 	if (mbs.param[0] != MBOX_COMMAND_COMPLETE) {
    517 		isp_dumpregs(isp, "failed to set initiator id");
    518 		return;
    519 	}
    520 
    521 	/*
    522 	 * Set Retry Delay and Count
    523 	 */
    524 	mbs.param[0] = MBOX_SET_RETRY_COUNT;
    525 	mbs.param[1] = sdp->isp_retry_count;
    526 	mbs.param[2] = sdp->isp_retry_delay;
    527 	isp_mboxcmd(isp, &mbs);
    528 	if (mbs.param[0] != MBOX_COMMAND_COMPLETE) {
    529 		isp_dumpregs(isp, "failed to set retry count and delay");
    530 		return;
    531 	}
    532 
    533 	/*
    534 	 * Set ASYNC DATA SETUP time. This is very important.
    535 	 */
    536 	mbs.param[0] = MBOX_SET_ASYNC_DATA_SETUP_TIME;
    537 	mbs.param[1] = sdp->isp_async_data_setup;
    538 	isp_mboxcmd(isp, &mbs);
    539 	if (mbs.param[0] != MBOX_COMMAND_COMPLETE) {
    540 		isp_dumpregs(isp, "failed to set async data setup time");
    541 		return;
    542 	}
    543 
    544 	/*
    545 	 * Set ACTIVE Negation State.
    546 	 */
    547 	mbs.param[0] = MBOX_SET_ACTIVE_NEG_STATE;
    548 	mbs.param[1] =
    549 	    (sdp->isp_req_ack_active_neg << 4) |
    550 	    (sdp->isp_data_line_active_neg << 5);
    551 	isp_mboxcmd(isp, &mbs);
    552 	if (mbs.param[0] != MBOX_COMMAND_COMPLETE) {
    553 		isp_dumpregs(isp, "failed to set active neg state");
    554 		return;
    555 	}
    556 
    557 	/*
    558 	 * Set the Tag Aging limit
    559 	 */
    560 
    561 	mbs.param[0] = MBOX_SET_TAG_AGE_LIMIT;
    562 	mbs.param[1] = sdp->isp_tag_aging;
    563 	isp_mboxcmd(isp, &mbs);
    564 	if (mbs.param[0] != MBOX_COMMAND_COMPLETE) {
    565 		isp_dumpregs(isp, "failed to set tag age limit");
    566 		return;
    567 	}
    568 
    569 	/*
    570 	 * Set selection timeout.
    571 	 */
    572 
    573 	mbs.param[0] = MBOX_SET_SELECT_TIMEOUT;
    574 	mbs.param[1] = sdp->isp_selection_timeout;
    575 	isp_mboxcmd(isp, &mbs);
    576 	if (mbs.param[0] != MBOX_COMMAND_COMPLETE) {
    577 		isp_dumpregs(isp, "failed to set selection timeout");
    578 		return;
    579 	}
    580 
    581 	/*
    582 	 * Set per-target parameters to a safe minimum.
    583 	 */
    584 
    585 	for (tgt = 0; tgt < MAX_TARGETS; tgt++) {
    586 		int maxlun, lun;
    587 
    588 		if (sdp->isp_devparam[tgt].dev_enable == 0)
    589 			continue;
    590 
    591 		mbs.param[0] = MBOX_SET_TARGET_PARAMS;
    592 		mbs.param[1] = tgt << 8;
    593 		mbs.param[2] = DPARM_SAFE_DFLT;
    594 		mbs.param[3] = 0;
    595 		/*
    596 		 * It is not quite clear when this changed over so that
    597 		 * we could force narrow and async, so assume >= 7.55.
    598 		 *
    599 		 * Otherwise, a SCSI bus reset issued below will force
    600 		 * the back to the narrow, async state (but see note
    601 		 * below also). Technically we should also do without
    602 		 * Parity.
    603 		 */
    604 		if (isp->isp_fwrev >= ISP_FW_REV(7, 55)) {
    605 			mbs.param[2] |= DPARM_NARROW | DPARM_ASYNC;
    606 		}
    607 		sdp->isp_devparam[tgt].cur_dflags = mbs.param[2] >> 8;
    608 
    609 		IDPRINTF(3, ("\n%s: tgt %d cflags %x offset %x period %x\n",
    610 		    isp->isp_name, tgt, mbs.param[2], mbs.param[3] >> 8,
    611 		    mbs.param[3] & 0xff));
    612 		isp_mboxcmd(isp, &mbs);
    613 		if (mbs.param[0] != MBOX_COMMAND_COMPLETE) {
    614 
    615 			PRINTF("%s: failed to set parameters for tgt %d\n",
    616 				isp->isp_name, tgt);
    617 
    618 			PRINTF("%s: flags %x offset %x period %x\n",
    619 				isp->isp_name, sdp->isp_devparam[tgt].dev_flags,
    620 				sdp->isp_devparam[tgt].sync_offset,
    621 				sdp->isp_devparam[tgt].sync_period);
    622 
    623 			mbs.param[0] = MBOX_SET_TARGET_PARAMS;
    624 			mbs.param[1] = tgt << 8;
    625 			mbs.param[2] = DPARM_SAFE_DFLT;
    626 			mbs.param[3] = 0;
    627 			isp_mboxcmd(isp, &mbs);
    628 			if (mbs.param[0] != MBOX_COMMAND_COMPLETE) {
    629 				PRINTF("%s: failed even to set defaults for "
    630 				    "target %d\n", isp->isp_name, tgt);
    631 				continue;
    632 			}
    633 		}
    634 
    635 		maxlun = (isp->isp_fwrev >= ISP_FW_REV(7, 55))? 32 : 8;
    636 		for (lun = 0; lun < maxlun; lun++) {
    637 			mbs.param[0] = MBOX_SET_DEV_QUEUE_PARAMS;
    638 			mbs.param[1] = (tgt << 8) | lun;
    639 			mbs.param[2] = sdp->isp_max_queue_depth;
    640 			mbs.param[3] = sdp->isp_devparam[tgt].exc_throttle;
    641 			isp_mboxcmd(isp, &mbs);
    642 			if (mbs.param[0] != MBOX_COMMAND_COMPLETE) {
    643 				PRINTF("%s: failed to set device queue "
    644 				    "parameters for target %d, lun %d\n",
    645 				    isp->isp_name, tgt, lun);
    646 				break;
    647 			}
    648 		}
    649 	}
    650 
    651 	/*
    652 	 * Set up DMA for the request and result mailboxes.
    653 	 */
    654 	if (ISP_MBOXDMASETUP(isp) != 0) {
    655 		PRINTF("%s: can't setup dma mailboxes\n", isp->isp_name);
    656 		return;
    657 	}
    658 
    659 	mbs.param[0] = MBOX_INIT_RES_QUEUE;
    660 	mbs.param[1] = RESULT_QUEUE_LEN;
    661 	mbs.param[2] = (u_int16_t) (isp->isp_result_dma >> 16);
    662 	mbs.param[3] = (u_int16_t) (isp->isp_result_dma & 0xffff);
    663 	mbs.param[4] = 0;
    664 	mbs.param[5] = 0;
    665 	isp_mboxcmd(isp, &mbs);
    666 	if (mbs.param[0] != MBOX_COMMAND_COMPLETE) {
    667 		isp_dumpregs(isp, "set of response queue failed");
    668 		return;
    669 	}
    670 	isp->isp_residx = 0;
    671 
    672 	mbs.param[0] = MBOX_INIT_REQ_QUEUE;
    673 	mbs.param[1] = RQUEST_QUEUE_LEN;
    674 	mbs.param[2] = (u_int16_t) (isp->isp_rquest_dma >> 16);
    675 	mbs.param[3] = (u_int16_t) (isp->isp_rquest_dma & 0xffff);
    676 	mbs.param[4] = 0;
    677 	mbs.param[5] = 0;
    678 	isp_mboxcmd(isp, &mbs);
    679 	if (mbs.param[0] != MBOX_COMMAND_COMPLETE) {
    680 		isp_dumpregs(isp, "set of request queue failed");
    681 		return;
    682 	}
    683 	isp->isp_reqidx = isp->isp_reqodx = 0;
    684 
    685 	/*
    686 	 * XXX: See whether or not for 7.55 F/W or later we
    687 	 * XXX: can do without this, and see whether we should
    688 	 * XXX: honor the NVRAM SCSI_RESET_DISABLE token.
    689 	 */
    690 	mbs.param[0] = MBOX_BUS_RESET;
    691 	mbs.param[1] = 3;
    692 	isp_mboxcmd(isp, &mbs);
    693 	if (mbs.param[0] != MBOX_COMMAND_COMPLETE) {
    694 		isp_dumpregs(isp, "SCSI bus reset failed");
    695 	}
    696 	/*
    697 	 * This is really important to have set after a bus reset.
    698 	 */
    699 	isp->isp_sendmarker = 1;
    700 	isp->isp_state = ISP_INITSTATE;
    701 }
    702 
    703 /*
    704  * Fibre Channel specific initialization.
    705  *
    706  * Locks are held before coming here.
    707  */
    708 static void
    709 isp_fibre_init(isp)
    710 	struct ispsoftc *isp;
    711 {
    712 	fcparam *fcp;
    713 	isp_icb_t *icbp;
    714 	mbreg_t mbs;
    715 	int count, loopid;
    716 	u_int8_t lwfs;
    717 
    718 	fcp = isp->isp_param;
    719 
    720 	if (ISP_MBOXDMASETUP(isp) != 0) {
    721 		PRINTF("%s: can't setup DMA for mailboxes\n", isp->isp_name);
    722 		return;
    723 	}
    724 	/*
    725 	 * For systems that don't have BIOS methods for which
    726 	 * we can easily change the NVRAM based loopid, we'll
    727 	 * override that here. Note that when we initialize
    728 	 * the firmware we may get back a different loopid than
    729 	 * we asked for anyway. XXX This is probably not the
    730 	 * best way to figure this out XXX
    731 	 */
    732 #ifndef	__i386__
    733 	loopid = DEFAULT_LOOPID;
    734 #else
    735 	loopid = fcp->isp_loopid;
    736 #endif
    737 
    738 
    739 	icbp = (isp_icb_t *) fcp->isp_scratch;
    740 	bzero(icbp, sizeof (*icbp));
    741 
    742 	icbp->icb_version = ICB_VERSION1;
    743 #ifdef	ISP_TARGET_MODE
    744 	fcp->isp_fwoptions = ICBOPT_TGT_ENABLE|ICBOPT_INI_TGTTYPE;
    745 #else
    746 	fcp->isp_fwoptions = 0;
    747 #endif
    748 	fcp->isp_fwoptions |= ICBOPT_INI_ADISC|ICBOPT_FAIRNESS;
    749 	fcp->isp_fwoptions |= ICBOPT_PDBCHANGE_AE;
    750 	fcp->isp_fwoptions |= ICBOPT_HARD_ADDRESS;
    751 #ifdef	CHECKME
    752 	fcp->isp_fwoptions |= ICBOPT_USE_PORTNAME;
    753 #endif
    754 #ifdef	THIS_WORKED
    755 	/*
    756 	 * This has unhappiness in target mode
    757 	 */
    758 	fcp->isp_fwoptions |= ICBOPT_FULL_LOGIN;
    759 #endif
    760 	icbp->icb_fwoptions = fcp->isp_fwoptions;
    761 	icbp->icb_maxfrmlen = fcp->isp_maxfrmlen;
    762 	if (icbp->icb_maxfrmlen < ICB_MIN_FRMLEN ||
    763 	    icbp->icb_maxfrmlen > ICB_MAX_FRMLEN) {
    764 		PRINTF("%s: bad frame length (%d) from NVRAM- using %d\n",
    765 		    isp->isp_name, fcp->isp_maxfrmlen, ICB_DFLT_FRMLEN);
    766 	}
    767 	icbp->icb_maxalloc = fcp->isp_maxalloc;
    768 	icbp->icb_execthrottle = fcp->isp_execthrottle;
    769 	icbp->icb_retry_delay = fcp->isp_retry_delay;
    770 	icbp->icb_retry_count = fcp->isp_retry_count;
    771 	icbp->icb_hardaddr = loopid;
    772 
    773 	MAKE_NODE_NAME_FROM_WWN(icbp->icb_nodename, fcp->isp_wwn);
    774 	if (icbp->icb_fwoptions & ICBOPT_USE_PORTNAME) {
    775 		u_int64_t portname = fcp->isp_wwn | (2LL << 56);
    776 		MAKE_NODE_NAME_FROM_WWN(icbp->icb_nodename, portname);
    777 	}
    778 	icbp->icb_rqstqlen = RQUEST_QUEUE_LEN;
    779 	icbp->icb_rsltqlen = RESULT_QUEUE_LEN;
    780 	icbp->icb_rqstaddr[RQRSP_ADDR0015] =
    781 	    (u_int16_t) (isp->isp_rquest_dma & 0xffff);
    782 	icbp->icb_rqstaddr[RQRSP_ADDR1631] =
    783 	    (u_int16_t) (isp->isp_rquest_dma >> 16);
    784 	icbp->icb_respaddr[RQRSP_ADDR0015] =
    785 	    (u_int16_t) (isp->isp_result_dma & 0xffff);
    786 	icbp->icb_respaddr[RQRSP_ADDR1631] =
    787 	    (u_int16_t) (isp->isp_result_dma >> 16);
    788 
    789 	for (count = 0; count < 10; count++) {
    790 		mbs.param[0] = MBOX_INIT_FIRMWARE;
    791 		mbs.param[1] = 0;
    792 		mbs.param[2] = (u_int16_t) (fcp->isp_scdma >> 16);
    793 		mbs.param[3] = (u_int16_t) (fcp->isp_scdma & 0xffff);
    794 		mbs.param[4] = 0;
    795 		mbs.param[5] = 0;
    796 		mbs.param[6] = 0;
    797 		mbs.param[7] = 0;
    798 
    799 		isp_mboxcmd(isp, &mbs);
    800 
    801 		switch (mbs.param[0]) {
    802 		case MBOX_COMMAND_COMPLETE:
    803 			count = 10;
    804 			break;
    805 		case ASYNC_LIP_OCCURRED:
    806 		case ASYNC_LOOP_UP:
    807 		case ASYNC_LOOP_DOWN:
    808 		case ASYNC_LOOP_RESET:
    809 		case ASYNC_PDB_CHANGED:
    810 		case ASYNC_CHANGE_NOTIFY:
    811 			if (count > 9) {
    812 				PRINTF("%s: too many retries to get going- "
    813 				    "giving up\n", isp->isp_name);
    814 				return;
    815 			}
    816 			break;
    817 		default:
    818 			isp_dumpregs(isp, "INIT FIRMWARE failed");
    819 			return;
    820 		}
    821 	}
    822 	isp->isp_reqidx = isp->isp_reqodx = 0;
    823 	isp->isp_residx = 0;
    824 
    825 	/*
    826 	 * Wait up to 5 seconds for FW to go to READY state.
    827 	 */
    828 	lwfs = FW_CONFIG_WAIT;
    829 	for (count = 0; count < 12000; count++) {
    830 		isp_fw_state(isp);
    831 		if (lwfs != fcp->isp_fwstate) {
    832 			PRINTF("%s: Firmware State %s -> %s\n",
    833 			    isp->isp_name, isp2100_fw_statename((int)lwfs),
    834 			    isp2100_fw_statename((int)fcp->isp_fwstate));
    835 			lwfs = fcp->isp_fwstate;
    836 		}
    837 		if (fcp->isp_fwstate == FW_READY) {
    838 			break;
    839 		}
    840 		SYS_DELAY(1000);	/* wait one millisecond */
    841 	}
    842 	isp->isp_sendmarker = 1;
    843 
    844 	/*
    845 	 * Get our Loop ID
    846 	 * (if possible)
    847 	 */
    848 	if (fcp->isp_fwstate == FW_READY) {
    849 		mbs.param[0] = MBOX_GET_LOOP_ID;
    850 		isp_mboxcmd(isp, &mbs);
    851 		if (mbs.param[0] != MBOX_COMMAND_COMPLETE) {
    852 			isp_dumpregs(isp, "GET LOOP ID failed");
    853 			return;
    854 		}
    855 		fcp->isp_loopid = mbs.param[1];
    856 		fcp->isp_alpa = mbs.param[2];
    857 		PRINTF("%s: Loop ID %d, ALPA 0x%x\n", isp->isp_name,
    858 		    fcp->isp_loopid, fcp->isp_alpa);
    859 		isp->isp_state = ISP_INITSTATE;
    860 #ifdef	ISP_TARGET_MODE
    861 		DISABLE_INTS(isp);
    862 		if (isp_modify_lun(isp, 0, 1, 1)) {
    863 			PRINTF("%s: failed to enable target mode\n",
    864 			    isp->isp_name);
    865 		}
    866 		ENABLE_INTS(isp);
    867 #endif
    868 	} else {
    869 		PRINTF("%s: failed to go to FW READY state- will not attach\n",
    870 		    isp->isp_name);
    871 	}
    872 }
    873 
    874 /*
    875  * Start a command. Locking is assumed done in the caller.
    876  */
    877 
    878 int32_t
    879 ispscsicmd(xs)
    880 	ISP_SCSI_XFER_T *xs;
    881 {
    882 	struct ispsoftc *isp;
    883 	u_int8_t iptr, optr;
    884 	union {
    885 		ispreq_t *_reqp;
    886 		ispreqt2_t *_t2reqp;
    887 	} _u;
    888 #define	reqp	_u._reqp
    889 #define	t2reqp	_u._t2reqp
    890 #define	UZSIZE	max(sizeof (ispreq_t), sizeof (ispreqt2_t))
    891 	int i;
    892 
    893 	XS_INITERR(xs);
    894 	isp = XS_ISP(xs);
    895 
    896 	if (isp->isp_state != ISP_RUNSTATE) {
    897 		PRINTF("%s: adapter not ready\n", isp->isp_name);
    898 		XS_SETERR(xs, HBA_BOTCH);
    899 		return (CMD_COMPLETE);
    900 	}
    901 
    902 	/*
    903 	 * We *could* do the different sequence type that has clos
    904 	 * to the whole Queue Entry for the command,.
    905 	 */
    906 	if (XS_CDBLEN(xs) > ((isp->isp_type & ISP_HA_FC)? 16 : 12)) {
    907 		PRINTF("%s: unsupported cdb length (%d)\n",
    908 		    isp->isp_name, XS_CDBLEN(xs));
    909 		XS_SETERR(xs, HBA_BOTCH);
    910 		return (CMD_COMPLETE);
    911 	}
    912 
    913 	/*
    914 	 * First check to see if any HBA or Device
    915 	 * parameters need to be updated.
    916 	 */
    917 	if (isp->isp_update) {
    918 		isp_update(isp);
    919 	}
    920 
    921 	optr = isp->isp_reqodx = ISP_READ(isp, OUTMAILBOX4);
    922 	iptr = isp->isp_reqidx;
    923 
    924 	reqp = (ispreq_t *) ISP_QUEUE_ENTRY(isp->isp_rquest, iptr);
    925 	iptr = ISP_NXT_QENTRY(iptr, RQUEST_QUEUE_LEN);
    926 	if (iptr == optr) {
    927 		IDPRINTF(2, ("%s: Request Queue Overflow\n", isp->isp_name));
    928 		XS_SETERR(xs, HBA_BOTCH);
    929 		return (CMD_EAGAIN);
    930 	}
    931 	if (isp->isp_type & ISP_HA_FC) {
    932 		DISABLE_INTS(isp);
    933 	}
    934 
    935 	if (isp->isp_sendmarker) {
    936 		u_int8_t niptr;
    937 		ispmarkreq_t *marker = (ispmarkreq_t *) reqp;
    938 
    939 		bzero((void *) marker, sizeof (*marker));
    940 		marker->req_header.rqs_entry_count = 1;
    941 		marker->req_header.rqs_entry_type = RQSTYPE_MARKER;
    942 		marker->req_modifier = SYNC_ALL;
    943 
    944 		isp->isp_sendmarker = 0;
    945 
    946 		/*
    947 		 * Unconditionally update the input pointer anyway.
    948 		 */
    949 		ISP_WRITE(isp, INMAILBOX4, iptr);
    950 		isp->isp_reqidx = iptr;
    951 
    952 		niptr = ISP_NXT_QENTRY(iptr, RQUEST_QUEUE_LEN);
    953 		if (niptr == optr) {
    954 			if (isp->isp_type & ISP_HA_FC) {
    955 				ENABLE_INTS(isp);
    956 			}
    957 			IDPRINTF(2, ("%s: Request Queue Overflow+\n",
    958 			    isp->isp_name));
    959 			XS_SETERR(xs, HBA_BOTCH);
    960 			return (CMD_EAGAIN);
    961 		}
    962 		reqp = (ispreq_t *) ISP_QUEUE_ENTRY(isp->isp_rquest, iptr);
    963 		iptr = niptr;
    964 	}
    965 
    966 	bzero((void *) reqp, UZSIZE);
    967 	reqp->req_header.rqs_entry_count = 1;
    968 	if (isp->isp_type & ISP_HA_FC) {
    969 		reqp->req_header.rqs_entry_type = RQSTYPE_T2RQS;
    970 	} else {
    971 		reqp->req_header.rqs_entry_type = RQSTYPE_REQUEST;
    972 	}
    973 	reqp->req_header.rqs_flags = 0;
    974 	reqp->req_header.rqs_seqno = isp->isp_seqno++;
    975 
    976 	for (i = 0; i < RQUEST_QUEUE_LEN; i++) {
    977 		if (isp->isp_xflist[i] == NULL)
    978 			break;
    979 	}
    980 	if (i == RQUEST_QUEUE_LEN) {
    981 		if (isp->isp_type & ISP_HA_FC)
    982 			ENABLE_INTS(isp);
    983 		IDPRINTF(2, ("%s: out of xflist pointers\n", isp->isp_name));
    984 		XS_SETERR(xs, HBA_BOTCH);
    985 		return (CMD_EAGAIN);
    986 	} else {
    987 		/*
    988 		 * Never have a handle that is zero, so
    989 		 * set req_handle off by one.
    990 		 */
    991 		isp->isp_xflist[i] = xs;
    992 		reqp->req_handle = i+1;
    993 	}
    994 
    995 	if (isp->isp_type & ISP_HA_FC) {
    996 		/*
    997 		 * See comment in isp_intr
    998 		 */
    999 		XS_RESID(xs) = 0;
   1000 		/*
   1001 		 * Fibre Channel always requires some kind of tag.
   1002 		 * If we're marked as "Can't Tag", just do simple
   1003 		 * instead of ordered tags. It's pretty clear to me
   1004 		 * that we shouldn't do head of queue tagging in
   1005 		 * this case.
   1006 		 */
   1007 		if (XS_CANTAG(xs)) {
   1008 			t2reqp->req_flags = XS_KINDOF_TAG(xs);
   1009 		} else {
   1010  			t2reqp->req_flags = REQFLAG_STAG;
   1011 		}
   1012 	} else {
   1013 		sdparam *sdp = (sdparam *)isp->isp_param;
   1014 		if ((sdp->isp_devparam[XS_TGT(xs)].cur_dflags & DPARM_TQING) &&
   1015 		    XS_CANTAG(xs)) {
   1016 			reqp->req_flags = XS_KINDOF_TAG(xs);
   1017 		} else {
   1018 			reqp->req_flags = 0;
   1019 		}
   1020 	}
   1021 	reqp->req_target = XS_TGT(xs);
   1022 	if (isp->isp_type & ISP_HA_SCSI) {
   1023 		reqp->req_lun_trn = XS_LUN(xs);
   1024 		reqp->req_cdblen = XS_CDBLEN(xs);
   1025 	} else {
   1026 #ifdef	SCCLUN
   1027 		reqp->req_scclun = XS_LUN(xs);
   1028 #else
   1029 		reqp->req_lun_trn = XS_LUN(xs);
   1030 #endif
   1031 
   1032 	}
   1033 	bcopy((void *)XS_CDBP(xs), reqp->req_cdb, XS_CDBLEN(xs));
   1034 
   1035 	IDPRINTF(5, ("%s(%d.%d): START%d cmd 0x%x datalen %d\n", isp->isp_name,
   1036 	    XS_TGT(xs), XS_LUN(xs), reqp->req_header.rqs_seqno,
   1037 	    reqp->req_cdb[0], XS_XFRLEN(xs)));
   1038 
   1039 	reqp->req_time = XS_TIME(xs) / 1000;
   1040 	if (reqp->req_time == 0 && XS_TIME(xs))
   1041 		reqp->req_time = 1;
   1042 	i = ISP_DMASETUP(isp, xs, reqp, &iptr, optr);
   1043 	if (i != CMD_QUEUED) {
   1044 		if (isp->isp_type & ISP_HA_FC)
   1045 			ENABLE_INTS(isp);
   1046 		/*
   1047 		 * dmasetup sets actual error in packet, and
   1048 		 * return what we were given to return.
   1049 		 */
   1050 		return (i);
   1051 	}
   1052 	XS_SETERR(xs, HBA_NOERROR);
   1053 	ISP_WRITE(isp, INMAILBOX4, iptr);
   1054 	isp->isp_reqidx = iptr;
   1055 	if (isp->isp_type & ISP_HA_FC) {
   1056 		ENABLE_INTS(isp);
   1057 	}
   1058 	isp->isp_nactive++;
   1059 	return (CMD_QUEUED);
   1060 #undef	reqp
   1061 #undef	t2reqp
   1062 }
   1063 
   1064 /*
   1065  * isp control
   1066  * Locks (ints blocked) assumed held.
   1067  */
   1068 
   1069 int
   1070 isp_control(isp, ctl, arg)
   1071 	struct ispsoftc *isp;
   1072 	ispctl_t ctl;
   1073 	void *arg;
   1074 {
   1075 	ISP_SCSI_XFER_T *xs;
   1076 	mbreg_t mbs;
   1077 	int i;
   1078 
   1079 	switch (ctl) {
   1080 	default:
   1081 		PRINTF("%s: isp_control unknown control op %x\n",
   1082 		    isp->isp_name, ctl);
   1083 		break;
   1084 
   1085 	case ISPCTL_RESET_BUS:
   1086 		mbs.param[0] = MBOX_BUS_RESET;
   1087 		mbs.param[1] = (isp->isp_type & ISP_HA_FC)? 5: 2;
   1088 		isp_mboxcmd(isp, &mbs);
   1089 		if (mbs.param[0] != MBOX_COMMAND_COMPLETE) {
   1090 			isp_dumpregs(isp, "isp_control SCSI bus reset failed");
   1091 			break;
   1092 		}
   1093 		/*
   1094 		 * This is really important to have set after a bus reset.
   1095 		 */
   1096 		isp->isp_sendmarker = 1;
   1097 		PRINTF("%s: driver initiated bus reset\n", isp->isp_name);
   1098 		return (0);
   1099 
   1100         case ISPCTL_RESET_DEV:
   1101 		/*
   1102 		 * Note that under parallel SCSI, this issues a BDR message.
   1103 		 * Under FC, we could probably be using ABORT TASK SET
   1104 		 * command.
   1105 		 */
   1106 
   1107 		mbs.param[0] = MBOX_ABORT_TARGET;
   1108 		mbs.param[1] = ((long)arg) << 8;
   1109 		mbs.param[2] = 2;	/* 'delay', in seconds */
   1110 		isp_mboxcmd(isp, &mbs);
   1111 		if (mbs.param[0] != MBOX_COMMAND_COMPLETE) {
   1112 			isp_dumpregs(isp, "SCSI Target  reset failed");
   1113 			break;
   1114 		}
   1115 		PRINTF("%s: Target %d Reset Succeeded\n", isp->isp_name,
   1116 		    (int) ((long) arg));
   1117 		isp->isp_sendmarker = 1;
   1118 		return (0);
   1119 
   1120         case ISPCTL_ABORT_CMD:
   1121 		xs = (ISP_SCSI_XFER_T *) arg;
   1122 		for (i = 0; i < RQUEST_QUEUE_LEN; i++) {
   1123 			if (xs == isp->isp_xflist[i]) {
   1124 				break;
   1125 			}
   1126 		}
   1127 		if (i == RQUEST_QUEUE_LEN) {
   1128 			PRINTF("%s: isp_control- cannot find command to abort "
   1129 			    "in active list\n", isp->isp_name);
   1130 			break;
   1131 		}
   1132 		mbs.param[0] = MBOX_ABORT;
   1133 #ifdef	SCCLUN
   1134 		if (isp->isp_type & ISP_HA_FC) {
   1135 			mbs.param[1] = XS_TGT(xs) << 8;
   1136 			mbs.param[4] = 0;
   1137 			mbs.param[5] = 0;
   1138 			mbs.param[6] = XS_LUN(xs);
   1139 		} else {
   1140 			mbs.param[1] = XS_TGT(xs) << 8 | XS_LUN(xs);
   1141 		}
   1142 #else
   1143 		mbs.param[1] = XS_TGT(xs) << 8 | XS_LUN(xs);
   1144 #endif
   1145 		mbs.param[2] = (i+1) >> 16;
   1146 		mbs.param[3] = (i+1) & 0xffff;
   1147 		isp_mboxcmd(isp, &mbs);
   1148 		if (mbs.param[0] != MBOX_COMMAND_COMPLETE) {
   1149 			PRINTF("%s: isp_control MBOX_ABORT failure (code %x)\n",
   1150 			    isp->isp_name, mbs.param[0]);
   1151 			break;
   1152 		}
   1153 		PRINTF("%s: command for target %d lun %d was aborted\n",
   1154 		    isp->isp_name, XS_TGT(xs), XS_LUN(xs));
   1155 		return (0);
   1156 
   1157 	case ISPCTL_UPDATE_PARAMS:
   1158 		isp_update(isp);
   1159 		return(0);
   1160 	}
   1161 	return (-1);
   1162 }
   1163 
   1164 /*
   1165  * Interrupt Service Routine(s).
   1166  *
   1167  * External (OS) framework has done the appropriate locking,
   1168  * and the locking will be held throughout this function.
   1169  */
   1170 
   1171 int
   1172 isp_intr(arg)
   1173 	void *arg;
   1174 {
   1175 	ISP_SCSI_XFER_T *complist[RESULT_QUEUE_LEN], *xs;
   1176 	struct ispsoftc *isp = arg;
   1177 	u_int8_t iptr, optr;
   1178 	u_int16_t isr;
   1179 	int i, ndone = 0;
   1180 
   1181 	isr = ISP_READ(isp, BIU_ISR);
   1182 	if (isp->isp_type & ISP_HA_FC) {
   1183 		if (isr == 0 || (isr & BIU2100_ISR_RISC_INT) == 0) {
   1184 			if (isr) {
   1185 				IDPRINTF(4, ("%s: isp_intr isr=%x\n",
   1186 					     isp->isp_name, isr));
   1187 			}
   1188 			return (0);
   1189 		}
   1190 	} else {
   1191 		if (isr == 0 || (isr & BIU_ISR_RISC_INT) == 0) {
   1192 			if (isr) {
   1193 				IDPRINTF(4, ("%s: isp_intr isr=%x\n",
   1194 					     isp->isp_name, isr));
   1195 			}
   1196 			return (0);
   1197 		}
   1198 	}
   1199 
   1200 	if (ISP_READ(isp, BIU_SEMA) & 1) {
   1201 		u_int16_t mbox = ISP_READ(isp, OUTMAILBOX0);
   1202 		if (isp_parse_async(isp, (int) mbox))
   1203 			return (1);
   1204 		ISP_WRITE(isp, BIU_SEMA, 0);
   1205 	}
   1206 
   1207 	ISP_WRITE(isp, HCCR, HCCR_CMD_CLEAR_RISC_INT);
   1208 
   1209 	optr = isp->isp_residx;
   1210 	iptr = ISP_READ(isp, OUTMAILBOX5);
   1211 
   1212 	if (optr == iptr) {
   1213 		IDPRINTF(4, ("why intr? isr %x iptr %x optr %x\n",
   1214 		    isr, optr, iptr));
   1215 	}
   1216 	ENABLE_INTS(isp);
   1217 
   1218 	while (optr != iptr) {
   1219 		ispstatusreq_t *sp;
   1220 		u_int8_t oop;
   1221 		int buddaboom = 0;
   1222 
   1223 		sp = (ispstatusreq_t *) ISP_QUEUE_ENTRY(isp->isp_result, optr);
   1224 		oop = optr;
   1225 		optr = ISP_NXT_QENTRY(optr, RESULT_QUEUE_LEN);
   1226 
   1227 		if (sp->req_header.rqs_entry_type != RQSTYPE_RESPONSE) {
   1228 			if (isp_handle_other_response(isp, sp, &optr) == 0) {
   1229 				ISP_WRITE(isp, INMAILBOX5, optr);
   1230 				continue;
   1231 			}
   1232 			/*
   1233 			 * It really has to be a bounced request just copied
   1234 			 * from the request queue to the response queue.
   1235 			 */
   1236 
   1237 			if (sp->req_header.rqs_entry_type != RQSTYPE_REQUEST) {
   1238 				ISP_WRITE(isp, INMAILBOX5, optr);
   1239 				continue;
   1240 			}
   1241 			PRINTF("%s: not RESPONSE in RESPONSE Queue "
   1242 			    "(type 0x%x) @ idx %d (next %d)\n", isp->isp_name,
   1243 			    sp->req_header.rqs_entry_type, oop, optr);
   1244 			buddaboom = 1;
   1245 		}
   1246 
   1247 		if (sp->req_header.rqs_flags & 0xf) {
   1248 			if (sp->req_header.rqs_flags & RQSFLAG_CONTINUATION) {
   1249 				ISP_WRITE(isp, INMAILBOX5, optr);
   1250 				continue;
   1251 			}
   1252 			PRINTF("%s: rqs_flags=%x", isp->isp_name,
   1253 				sp->req_header.rqs_flags & 0xf);
   1254 			if (sp->req_header.rqs_flags & RQSFLAG_FULL) {
   1255 				PRINTF("%s: internal queues full\n",
   1256 				    isp->isp_name);
   1257 				/* XXXX: this command *could* get restarted */
   1258 				buddaboom++;
   1259 			}
   1260 			if (sp->req_header.rqs_flags & RQSFLAG_BADHEADER) {
   1261 				PRINTF("%s: bad header\n", isp->isp_name);
   1262 				buddaboom++;
   1263 			}
   1264 			if (sp->req_header.rqs_flags & RQSFLAG_BADPACKET) {
   1265 				PRINTF("%s: bad request packet\n",
   1266 				    isp->isp_name);
   1267 				buddaboom++;
   1268 			}
   1269 		}
   1270 		if (sp->req_handle > RQUEST_QUEUE_LEN || sp->req_handle < 1) {
   1271 			PRINTF("%s: bad request handle %d\n", isp->isp_name,
   1272 				sp->req_handle);
   1273 			ISP_WRITE(isp, INMAILBOX5, optr);
   1274 			continue;
   1275 		}
   1276 		xs = (ISP_SCSI_XFER_T *) isp->isp_xflist[sp->req_handle - 1];
   1277 		if (xs == NULL) {
   1278 			PRINTF("%s: NULL xs in xflist (handle %x)\n",
   1279 			    isp->isp_name, sp->req_handle);
   1280 			isp_dumpxflist(isp);
   1281 			ISP_WRITE(isp, INMAILBOX5, optr);
   1282 			continue;
   1283 		}
   1284 		isp->isp_xflist[sp->req_handle - 1] = NULL;
   1285 		if (sp->req_status_flags & RQSTF_BUS_RESET) {
   1286 			isp->isp_sendmarker = 1;
   1287 		}
   1288 		if (buddaboom) {
   1289 			XS_SETERR(xs, HBA_BOTCH);
   1290 		}
   1291 		XS_STS(xs) = sp->req_scsi_status & 0xff;
   1292 		if (isp->isp_type & ISP_HA_SCSI) {
   1293 			if (sp->req_state_flags & RQSF_GOT_SENSE) {
   1294 				bcopy(sp->req_sense_data, XS_SNSP(xs),
   1295 					XS_SNSLEN(xs));
   1296 				XS_SNS_IS_VALID(xs);
   1297 			}
   1298 		} else {
   1299 			if (XS_STS(xs) == SCSI_CHECK) {
   1300 				XS_SNS_IS_VALID(xs);
   1301 				bcopy(sp->req_sense_data, XS_SNSP(xs),
   1302 					XS_SNSLEN(xs));
   1303 				sp->req_state_flags |= RQSF_GOT_SENSE;
   1304 			}
   1305 		}
   1306 		if (XS_NOERR(xs) && XS_STS(xs) == SCSI_BUSY) {
   1307 			XS_SETERR(xs, HBA_TGTBSY);
   1308 		}
   1309 
   1310 		if (sp->req_header.rqs_entry_type == RQSTYPE_RESPONSE) {
   1311 			if (XS_NOERR(xs)) {
   1312 			    if (sp->req_completion_status != RQCS_COMPLETE) {
   1313 				isp_parse_status(isp, sp, xs);
   1314 			    } else {
   1315 				XS_SETERR(xs, HBA_NOERROR);
   1316 			    }
   1317 			}
   1318 		} else {
   1319 			PRINTF("%s: unknown return %x\n", isp->isp_name,
   1320 				sp->req_header.rqs_entry_type);
   1321 			if (XS_NOERR(xs))
   1322 				XS_SETERR(xs, HBA_BOTCH);
   1323 		}
   1324 		if (isp->isp_type & ISP_HA_SCSI) {
   1325 			XS_RESID(xs) = sp->req_resid;
   1326 		} else if (sp->req_scsi_status & RQCS_RU) {
   1327 			XS_RESID(xs) = sp->req_resid;
   1328 			IDPRINTF(4, ("%s: cnt %d rsd %d\n", isp->isp_name,
   1329 				XS_XFRLEN(xs), sp->req_resid));
   1330 		}
   1331 		if (XS_XFRLEN(xs)) {
   1332 			ISP_DMAFREE(isp, xs, sp->req_handle - 1);
   1333 		}
   1334 		/*
   1335 		 * XXX: If we have a check condition, but no Sense Data,
   1336 		 * XXX: mark it as an error (ARQ failed). We need to
   1337 		 * XXX: to do a more distinct job because there may
   1338 		 * XXX: cases where ARQ is disabled.
   1339 		 */
   1340 		if (XS_STS(xs) == SCSI_CHECK && !(XS_IS_SNS_VALID(xs))) {
   1341 			if (XS_NOERR(xs)) {
   1342 				PRINTF("%s: ARQ failure for target %d lun %d\n",
   1343 				    isp->isp_name, XS_TGT(xs), XS_LUN(xs));
   1344 				XS_SETERR(xs, HBA_ARQFAIL);
   1345 			}
   1346 		}
   1347 		if ((isp->isp_dblev >= 5) ||
   1348 		    (isp->isp_dblev > 2 && !XS_NOERR(xs))) {
   1349 			PRINTF("%s(%d.%d): FIN%d dl%d resid%d STS %x",
   1350 			    isp->isp_name, XS_TGT(xs), XS_LUN(xs),
   1351 			    sp->req_header.rqs_seqno, XS_XFRLEN(xs),
   1352 			    XS_RESID(xs), XS_STS(xs));
   1353 			if (sp->req_state_flags & RQSF_GOT_SENSE) {
   1354 				PRINTF(" Skey: %x", XS_SNSKEY(xs));
   1355 				if (!(XS_IS_SNS_VALID(xs))) {
   1356 					PRINTF(" BUT NOT SET");
   1357 				}
   1358 			}
   1359 			PRINTF(" XS_ERR=0x%x\n", (unsigned int) XS_ERR(xs));
   1360 		}
   1361 
   1362 		ISP_WRITE(isp, INMAILBOX5, optr);
   1363 		if (isp->isp_nactive > 0)
   1364 		    isp->isp_nactive--;
   1365 		complist[ndone++] = xs;	/* defer completion call until later */
   1366 	}
   1367 	/*
   1368 	 * If we completed any commands, then it's valid to find out
   1369 	 * what the outpointer is.
   1370 	 */
   1371 	if (ndone) {
   1372 	 	isp->isp_reqodx = ISP_READ(isp, OUTMAILBOX4);
   1373 	}
   1374 	isp->isp_residx = optr;
   1375 	for (i = 0; i < ndone; i++) {
   1376 		xs = complist[i];
   1377 		if (xs) {
   1378 			XS_CMD_DONE(xs);
   1379 		}
   1380 	}
   1381 	return (1);
   1382 }
   1383 
   1384 /*
   1385  * Support routines.
   1386  */
   1387 
   1388 static int
   1389 isp_parse_async(isp, mbox)
   1390 	struct ispsoftc *isp;
   1391 	int mbox;
   1392 {
   1393 	switch (mbox) {
   1394 	case ASYNC_BUS_RESET:
   1395 		PRINTF("%s: SCSI bus reset detected\n", isp->isp_name);
   1396 		isp->isp_sendmarker = 1;
   1397 #ifdef	ISP_TARGET_MODE
   1398 		isp_notify_ack(isp, NULL);
   1399 #endif
   1400 		break;
   1401 
   1402 	case ASYNC_SYSTEM_ERROR:
   1403 		mbox = ISP_READ(isp, OUTMAILBOX1);
   1404 		PRINTF("%s: Internal FW Error @ RISC Addr 0x%x\n",
   1405 		    isp->isp_name, mbox);
   1406 		isp_restart(isp);
   1407 		/* no point continuing after this */
   1408 		return (1);
   1409 
   1410 	case ASYNC_RQS_XFER_ERR:
   1411 		PRINTF("%s: Request Queue Transfer Error\n", isp->isp_name);
   1412 		break;
   1413 
   1414 	case ASYNC_RSP_XFER_ERR:
   1415 		PRINTF("%s: Response Queue Transfer Error\n", isp->isp_name);
   1416 		break;
   1417 
   1418 	case ASYNC_QWAKEUP:
   1419 		/* don't need to be chatty */
   1420 		mbox = ISP_READ(isp, OUTMAILBOX4);
   1421 		break;
   1422 
   1423 	case ASYNC_TIMEOUT_RESET:
   1424 		PRINTF("%s: timeout initiated SCSI bus reset\n", isp->isp_name);
   1425 		isp->isp_sendmarker = 1;
   1426 #ifdef	ISP_TARGET_MODE
   1427 		isp_notify_ack(isp, NULL);
   1428 #endif
   1429 		break;
   1430 
   1431 	case ASYNC_DEVICE_RESET:
   1432 		PRINTF("%s: device reset\n", isp->isp_name);
   1433 #ifdef	ISP_TARGET_MODE
   1434 		isp_notify_ack(isp, NULL);
   1435 #endif
   1436 		break;
   1437 
   1438 	case ASYNC_EXTMSG_UNDERRUN:
   1439 		PRINTF("%s: extended message underrun\n", isp->isp_name);
   1440 		break;
   1441 
   1442 	case ASYNC_SCAM_INT:
   1443 		PRINTF("%s: SCAM interrupt\n", isp->isp_name);
   1444 		break;
   1445 
   1446 	case ASYNC_HUNG_SCSI:
   1447 		PRINTF("%s: stalled SCSI Bus after DATA Overrun\n",
   1448 		    isp->isp_name);
   1449 		/* XXX: Need to issue SCSI reset at this point */
   1450 		break;
   1451 
   1452 	case ASYNC_KILLED_BUS:
   1453 		PRINTF("%s: SCSI Bus reset after DATA Overrun\n",
   1454 		    isp->isp_name);
   1455 		break;
   1456 
   1457 	case ASYNC_BUS_TRANSIT:
   1458 		PRINTF("%s: LBD->HVD Transition 0x%x\n",
   1459 		    isp->isp_name, ISP_READ(isp, OUTMAILBOX1));
   1460 		break;
   1461 
   1462 	case ASYNC_CMD_CMPLT:
   1463 		PRINTF("%s: fast post completion\n", isp->isp_name);
   1464 #if	0
   1465 		fast_post_handle = (ISP_READ(isp, OUTMAILBOX1) << 16) |
   1466 		    ISP_READ(isp, OUTMAILBOX2);
   1467 #endif
   1468 		break;
   1469 
   1470 	case ASYNC_CTIO_DONE:
   1471 		/* Should only occur when Fast Posting Set for 2100s */
   1472 		PRINTF("%s: CTIO done\n", isp->isp_name);
   1473 		break;
   1474 
   1475 	case ASYNC_LIP_OCCURRED:
   1476 		PRINTF("%s: LIP occurred\n", isp->isp_name);
   1477 		break;
   1478 
   1479 	case ASYNC_LOOP_UP:
   1480 		PRINTF("%s: Loop UP\n", isp->isp_name);
   1481 		break;
   1482 
   1483 	case ASYNC_LOOP_DOWN:
   1484 		PRINTF("%s: Loop DOWN\n", isp->isp_name);
   1485 		break;
   1486 
   1487 	case ASYNC_LOOP_RESET:
   1488 		PRINTF("%s: Loop RESET\n", isp->isp_name);
   1489 #ifdef	ISP_TARGET_MODE
   1490 		isp_notify_ack(isp, NULL);
   1491 #endif
   1492 		break;
   1493 
   1494 	case ASYNC_PDB_CHANGED:
   1495 		PRINTF("%s: Port Database Changed\n", isp->isp_name);
   1496 		break;
   1497 
   1498 	case ASYNC_CHANGE_NOTIFY:
   1499 		PRINTF("%s: Name Server Database Changed\n", isp->isp_name);
   1500 		break;
   1501 
   1502 	default:
   1503 		PRINTF("%s: async %x\n", isp->isp_name, mbox);
   1504 		break;
   1505 	}
   1506 	return (0);
   1507 }
   1508 
   1509 static int
   1510 isp_handle_other_response(isp, sp, optrp)
   1511 	struct ispsoftc *isp;
   1512 	ispstatusreq_t *sp;
   1513 	u_int8_t *optrp;
   1514 {
   1515 	u_int8_t iptr, optr;
   1516 	int reqsize = 0;
   1517 	void *ireqp = NULL;
   1518 #ifdef	ISP_TARGET_MODE
   1519 	union {
   1520 		at_entry_t	*atio;
   1521 		at2_entry_t	*at2io;
   1522 		ct_entry_t	*ctio;
   1523 		ct2_entry_t	*ct2io;
   1524 		lun_entry_t	*lunen;
   1525 		in_entry_t	*inot;
   1526 		in_fcentry_t	*inot_fc;
   1527 		na_entry_t	*nack;
   1528 		na_fcentry_t	*nack_fc;
   1529 		void            *voidp;
   1530 #define	atio	un.atio
   1531 #define	at2io	un.at2io
   1532 #define	ctio	un.ctio
   1533 #define	ct2io	un.ct2io
   1534 #define	lunen	un.lunen
   1535 #define	inot	un.inot
   1536 #define	inot_fc	un.inot_fc
   1537 #define	nack	un.nack
   1538 #define	nack_fc	un.nack_fc
   1539 	} un;
   1540 
   1541 	un.voidp = sp;
   1542 #endif
   1543 
   1544 
   1545 	switch (sp->req_header.rqs_entry_type) {
   1546 	case RQSTYPE_REQUEST:
   1547 		return (-1);
   1548 #ifdef	ISP_TARGET_MODE
   1549 	case RQSTYPE_NOTIFY_ACK:
   1550 	{
   1551 		static const char *f =
   1552 			"%s: Notify Ack Status 0x%x Sequence Id 0x%x\n"
   1553 		/*
   1554 		 * The ISP is acknowleding our ack of an Immediate Notify.
   1555 		 */
   1556 		if (isp->isp_type & ISP_HA_FC) {
   1557 			PRINTF(f, isp->isp_name,
   1558 			    nack_fc->na-status, nack_fc->na_seqid);
   1559 		} else {
   1560 			PRINTF(f, isp->isp_name,
   1561 			    nack->na_status, nack->na_seqid);
   1562 		}
   1563 		break;
   1564 	}
   1565 	case RQSTYPE_NOTIFY:
   1566 	{
   1567 		u_int16_t seqid, status;
   1568 
   1569 		/*
   1570 		 * Either the ISP received a SCSI message it cannot handle
   1571 		 * or some other out of band condition (e.g., Port Logout)
   1572 		 * or it is returning an Immediate Notify entry we sent.
   1573 		 */
   1574 		if (isp->isp_type & ISP_HA_FC) {
   1575 			status = inot_fc->status;
   1576 			seqid = inot_fc->in_seqid;
   1577 		} else {
   1578 			status = inot->status;
   1579 			seqid = inot->seqid & 0xff;
   1580 		}
   1581 		PRINTF("%s: Immediate Notify Status 0x%x Sequence Id 0x%x\n",
   1582 		    isp->isp_name, status, seqid);
   1583 
   1584 		switch (status) {
   1585 		case IN_MSG_RECEIVED:
   1586 		case IN_IDE_RECEIVED:
   1587 			ptisp_got_msg(ptp, &inot);
   1588 			break;
   1589 		case IN_RSRC_UNAVAIL:
   1590                         PRINTF("%s: Firmware out of ATIOs\n", isp->isp_name);
   1591                         break;
   1592                 case IN_ABORT_TASK:
   1593 			PRINTF("%s: Abort Task iid %d rx_id 0x%x\n",
   1594 			    inot_fc->in_iid, seqid);
   1595                         break;
   1596                 case IN_PORT_LOGOUT:
   1597 			PRINTF("%s: Port Logout for Initiator %d\n",
   1598 			    isp->isp_name, inot_fc->in_iid);
   1599                         break;
   1600                 default:
   1601 			PRINTF("%s: bad status (0x%x) in Immediate Notify\n",
   1602                             isp->isp_name, status);
   1603                         break;
   1604 
   1605 		}
   1606 		isp_notify_ack(isp, un.voidp);
   1607 		reqsize = 0;
   1608 		break;
   1609 	}
   1610 	case RQSTYPE_ENABLE_LUN:
   1611 	case RQSTYPE_MODIFY_LUN:
   1612 		if (lunen->req_status != 1) {
   1613 		    PRINTF("%s: ENABLE/MODIFY LUN returned status 0x%x\n",
   1614 			isp->isp_name, lunen->req_status);
   1615 		}
   1616 		break;
   1617 	case RQSTYPE_ATIO2:
   1618 	{
   1619 		fcparam *fcp = isp->isp_param;
   1620 		ispctiot2_t local, *ct2 = NULL;
   1621 		ispatiot2_t *at2 = (ispatiot2_t *) sp;
   1622 		int s, lun;
   1623 
   1624 #ifdef	SCCLUN
   1625 		lun = at2->req_scclun;
   1626 #else
   1627 		lun = at2->req_lun;
   1628 #endif
   1629 		PRINTF("%s: atio2 loopid %d for lun %d rxid 0x%x flags0x%x "
   1630 		    "tflags0x%x ecodes0x%x rqstatus0x%x\n", isp->isp_name,
   1631 		    at2->req_initiator, lun, at2->req_rxid,
   1632 		    at2->req_flags, at2->req_taskflags, at2->req_execodes,
   1633 		    at2->req_status);
   1634 
   1635 		switch (at2->req_status & ~ATIO_SENSEVALID) {
   1636 		case ATIO_PATH_INVALID:
   1637 			PRINTF("%s: ATIO2 Path Invalid\n", isp->isp_name);
   1638 			break;
   1639 		case ATIO_NOCAP:
   1640 			PRINTF("%s: ATIO2 No Cap\n", isp->isp_name);
   1641 			break;
   1642 		case ATIO_BDR_MSG:
   1643 			PRINTF("%s: ATIO2 BDR Received\n", isp->isp_name);
   1644 			break;
   1645 		case ATIO_CDB_RECEIVED:
   1646 			ct2 = &local;
   1647 			break;
   1648 		default:
   1649 			PRINTF("%s: unknown req_status 0x%x\n", isp->isp_name,
   1650 			    at2->req_status);
   1651 			break;
   1652 		}
   1653 		if (ct2 == NULL) {
   1654 			/*
   1655 			 * Just do an ACCEPT on this fellow.
   1656 			 */
   1657 			at2->req_header.rqs_entry_type = RQSTYPE_ATIO2;
   1658 			at2->req_header.rqs_flags = 0;
   1659 			at2->req_flags = 1;
   1660 			ireqp = at2;
   1661 			reqsize = sizeof (*at2);
   1662 			break;
   1663 		}
   1664 		PRINTF("%s: datalen %d cdb0=0x%x\n", isp->isp_name,
   1665 		    at2->req_datalen, at2->req_cdb[0]);
   1666 		bzero ((void *) ct2, sizeof (*ct2));
   1667 		ct2->req_header.rqs_entry_type = RQSTYPE_CTIO2;
   1668 		ct2->req_header.rqs_entry_count = 1;
   1669 		ct2->req_header.rqs_flags = 0;
   1670 		ct2->req_header.rqs_seqno = isp->isp_seqno++;
   1671 		ct2->req_handle = (at2->req_initiator << 16) | lun;
   1672 #ifndef	SCCLUN
   1673 		ct2->req_lun = lun;
   1674 #endif
   1675 		ct2->req_initiator = at2->req_initiator;
   1676 		ct2->req_rxid = at2->req_rxid;
   1677 
   1678 		ct2->req_flags = CTIO_SEND_STATUS;
   1679 		switch (at2->req_cdb[0]) {
   1680 		case 0x0:		/* TUR */
   1681 			ct2->req_flags |= CTIO_NODATA | CTIO2_SMODE0;
   1682 			ct2->req_m.mode0.req_scsi_status = CTIO2_STATUS_VALID;
   1683 			break;
   1684 
   1685 		case 0x3:		/* REQUEST SENSE */
   1686 		case 0x12:		/* INQUIRE */
   1687 			ct2->req_flags |= CTIO_SEND_DATA | CTIO2_SMODE0;
   1688 			ct2->req_m.mode0.req_scsi_status = CTIO2_STATUS_VALID;
   1689 			ct2->req_seg_count = 1;
   1690 			if (at2->req_cdb[0] == 0x12) {
   1691 				s = sizeof(tgtiqd);
   1692 				bcopy((void *)tgtiqd, fcp->isp_scratch, s);
   1693 			} else {
   1694 				s = at2->req_datalen;
   1695 				bzero(fcp->isp_scratch, s);
   1696 			}
   1697 			ct2->req_m.mode0.req_dataseg[0].ds_base =
   1698 			    fcp->isp_scdma;
   1699 			ct2->req_m.mode0.req_dataseg[0].ds_count = s;
   1700 			ct2->req_m.mode0.req_datalen = s;
   1701 #if	1
   1702 			if (at2->req_datalen < s) {
   1703 				ct2->req_m.mode1.req_scsi_status |=
   1704 				    CTIO2_RESP_VALID|CTIO2_RSPOVERUN;
   1705 			} else if (at2->req_datalen > s) {
   1706 				ct2->req_m.mode1.req_scsi_status |=
   1707 				    CTIO2_RESP_VALID|CTIO2_RSPUNDERUN;
   1708 			}
   1709 #endif
   1710 			break;
   1711 
   1712 		default:		/* ALL OTHERS */
   1713 			ct2->req_flags |= CTIO_NODATA | CTIO2_SMODE1;
   1714 			ct2->req_m.mode1.req_scsi_status = 0;
   1715 #if	1
   1716 			if (at2->req_datalen) {
   1717 				ct2->req_m.mode1.req_scsi_status |=
   1718 				    CTIO2_RSPUNDERUN;
   1719 #if	BYTE_ORDER == BIG_ENDIAN
   1720 				ct2->req_resid[1] = at2->req_datalen & 0xff;
   1721 				ct2->req_resid[0] =
   1722 					(at2->req_datalen >> 8) & 0xff;
   1723 				ct2->req_resid[3] =
   1724 					(at2->req_datalen >> 16) & 0xff;
   1725 				ct2->req_resid[2] =
   1726 					(at2->req_datalen >> 24) & 0xff;
   1727 #else
   1728 				ct2->req_resid[0] = at2->req_datalen & 0xff;
   1729 				ct2->req_resid[1] =
   1730 					(at2->req_datalen >> 8) & 0xff;
   1731 				ct2->req_resid[2] =
   1732 					(at2->req_datalen >> 16) & 0xff;
   1733 				ct2->req_resid[3] =
   1734 					(at2->req_datalen >> 24) & 0xff;
   1735 #endif
   1736 			}
   1737 #endif
   1738 			if ((at2->req_status & ATIO_SENSEVALID) == 0) {
   1739 				ct2->req_m.mode1.req_sense_len = 18;
   1740 				ct2->req_m.mode1.req_scsi_status |= 2;
   1741 				ct2->req_m.mode1.req_response[0] = 0x70;
   1742 				ct2->req_m.mode1.req_response[2] = 0x2;
   1743 			} else {
   1744 				ct2->req_m.mode1.req_sense_len = 18;
   1745 				ct2->req_m.mode1.req_scsi_status |=
   1746 				    at2->req_scsi_status;
   1747 				bcopy((void *)at2->req_sense,
   1748 				    (void *)ct2->req_m.mode1.req_response,
   1749 				    sizeof (at2->req_sense));
   1750 			}
   1751 			break;
   1752 		}
   1753 		reqsize = sizeof (*ct2);
   1754 		ireqp = ct2;
   1755 		break;
   1756 	}
   1757 	case RQSTYPE_CTIO2:
   1758 	{
   1759 		ispatiot2_t *at2;
   1760 		ispctiot2_t *ct2 = (ispctiot2_t *) sp;
   1761 		PRINTF("%s: CTIO2 returned status 0x%x\n", isp->isp_name,
   1762 		    ct2->req_status);
   1763 		/*
   1764 	 	 * Return the ATIO to the board.
   1765 		 */
   1766 		at2 = (ispatiot2_t *) sp;
   1767 		at2->req_header.rqs_entry_type = RQSTYPE_ATIO2;
   1768 		at2->req_header.rqs_entry_count = 1;
   1769 		at2->req_header.rqs_flags = 0;
   1770 		at2->req_header.rqs_seqno = isp->isp_seqno++;
   1771 		at2->req_status = 1;
   1772 		reqsize = sizeof (*at2);
   1773 		ireqp = at2;
   1774 		break;
   1775 	}
   1776 #undef	atio
   1777 #undef	at2io
   1778 #undef	ctio
   1779 #undef	ct2io
   1780 #undef	lunen
   1781 #undef	inot
   1782 #undef	inot_fc
   1783 #undef	nack
   1784 #undef	nack_fc
   1785 #endif
   1786 	default:
   1787 		PRINTF("%s: other response type %x\n", isp->isp_name,
   1788 		    sp->req_header.rqs_entry_type);
   1789 		break;
   1790 	}
   1791 	if (reqsize) {
   1792 		void *reqp;
   1793 		optr = isp->isp_reqodx = ISP_READ(isp, OUTMAILBOX4);
   1794 		iptr = isp->isp_reqidx;
   1795 		reqp = (void *) ISP_QUEUE_ENTRY(isp->isp_rquest, iptr);
   1796 		iptr = ISP_NXT_QENTRY(iptr, RQUEST_QUEUE_LEN);
   1797 		if (iptr == optr) {
   1798 			PRINTF("%s: Request Queue Overflow other response\n",
   1799 			    isp->isp_name);
   1800 		} else {
   1801 			bcopy(ireqp, reqp, reqsize);
   1802 			ISP_WRITE(isp, INMAILBOX4, iptr);
   1803 			isp->isp_reqidx = iptr;
   1804 		}
   1805 	}
   1806 	return (0);
   1807 }
   1808 
   1809 #ifdef	ISP_TARGET_MODE
   1810 
   1811 static void isp_tmd_newcmd_dflt __P((void *, tmd_cmd_t *));
   1812 static void isp_tmd_event_dflt __P((void *, int));
   1813 static void isp_tmd_notify_dflt __P((void *, tmd_notify_t *));
   1814 
   1815 static void isp_tgt_data_xfer __P ((tmd_cmd_t *));
   1816 static void isp_tgt_endcmd __P ((tmd_cmd_t *, u_int8_t));
   1817 static void isp_tgt_done __P ((tmd_cmd_t *));
   1818 
   1819 static void
   1820 isp_tmd_newcmd_dflt(arg0, cmdp)
   1821 	void *arg0;
   1822 	tmd_cmd_t *cmdp;
   1823 {
   1824 }
   1825 
   1826 static void
   1827 isp_tmd_event_dflt(arg0, event)
   1828 	void *arg0;
   1829 	int event;
   1830 {
   1831 }
   1832 
   1833 static void
   1834 isp_tmd_notify_dflt(arg0, npt)
   1835 	void *arg0;
   1836 	tmd_notify_t *npt;
   1837 {
   1838 }
   1839 
   1840 /*
   1841  * Locks held, and ints disabled (if FC).
   1842  *
   1843  * XXX: SETUP ONLY FOR INITIAL ENABLING RIGHT NOW
   1844  */
   1845 static int
   1846 isp_modify_lun(isp, lun, icnt, ccnt)
   1847 	struct ispsoftc *isp;
   1848 	int lun;	/* logical unit to enable, modify, or disable */
   1849 	int icnt;	/* immediate notify count */
   1850 	int ccnt;	/* command count */
   1851 {
   1852 	isplun_t *ip = NULL;
   1853 	u_int8_t iptr, optr;
   1854 
   1855 	optr = isp->isp_reqodx = ISP_READ(isp, OUTMAILBOX4);
   1856 	iptr = isp->isp_reqidx;
   1857 	ip = (isplun_t *) ISP_QUEUE_ENTRY(isp->isp_rquest, iptr);
   1858 	iptr = ISP_NXT_QENTRY(iptr, RQUEST_QUEUE_LEN);
   1859 	if (iptr == optr) {
   1860 		PRINTF("%s: Request Queue Overflow in isp_modify_lun\n",
   1861 		    isp->isp_name);
   1862 		return (-1);
   1863 	}
   1864 
   1865 	bzero((void *) ip, sizeof (*ip));
   1866 	ip->req_header.rqs_entry_type = RQSTYPE_ENABLE_LUN;
   1867 	ip->req_header.rqs_entry_count = 1;
   1868 	ip->req_header.rqs_seqno = isp->isp_seqno++;
   1869 	ip->req_handle = RQSTYPE_ENABLE_LUN;
   1870 	if (isp->isp_type & ISP_HA_SCSI) {
   1871 		ip->req_lun = lun;
   1872 	}
   1873 	ip->req_cmdcount = ccnt;
   1874 	ip->req_imcount = icnt;
   1875 	ip->req_timeout = 0;	/* default 30 seconds */
   1876 	ISP_WRITE(isp, INMAILBOX4, iptr);
   1877 	isp->isp_reqidx = iptr;
   1878 	return (0);
   1879 }
   1880 
   1881 static void
   1882 isp_notify_ack(isp, ptrp)
   1883 	struct ispsoftc *isp;
   1884 	void *ptrp;
   1885 {
   1886 	void *reqp;
   1887 	u_int8_t iptr, optr;
   1888 	union {
   1889 		na_fcentry_t _naf;
   1890 		na_entry_t _nas;
   1891 	} un;
   1892 
   1893 	bzero((caddr_t)&un, sizeof (un));
   1894 	un._nas.na_header.rqs_entry_type = RQSTYPE_NOTIFY_ACK;
   1895 	un._nas.na_header.rqs_entry_count = 1;
   1896 
   1897 	if (isp->isp_type & ISP_HA_FC) {
   1898 		na_fcentry_t *na = &un._nas;
   1899 		if (ptrp) {
   1900 			in_fcentry_t *inp = ptrp;
   1901 			na->na_iid = inp->in_iid;
   1902 			na->na_lun = inp->in_lun;
   1903 			na->na_task_flags = inp->in_task_flags;
   1904 			na->na_seqid = inp->in_seqid;
   1905 			na->na_status = inp->in_status;
   1906 		} else {
   1907 			na->na_flags = NAFC_RST_CLRD;
   1908 		}
   1909 	} else {
   1910 		na_entry_t *na = &un._nas;
   1911 		if (ptrp) {
   1912 			in_entry_t *inp = ptrp;
   1913 			na->na_iid = inp->in_iid;
   1914 			na->na_lun = inp->in_lun;
   1915 			na->na_tgt = inp->in_tgt;
   1916 			na->na_seqid = inp->in_seqid;
   1917 		} else {
   1918 			na->na_flags = NA_RST_CLRD;
   1919 		}
   1920 	}
   1921 	optr = isp->isp_reqodx = ISP_READ(isp, OUTMAILBOX4);
   1922 	iptr = isp->isp_reqidx;
   1923 	reqp = (void *) ISP_QUEUE_ENTRY(isp->isp_rquest, iptr);
   1924 	iptr = ISP_NXT_QENTRY(iptr, RQUEST_QUEUE_LEN);
   1925 	if (iptr == optr) {
   1926 		PRINTF("%s: Request Queue Overflow For isp_notify_ack\n",
   1927 		    isp->isp_name);
   1928 	} else {
   1929 		bcopy(ireqp, reqp, sizeof (un));
   1930 		ISP_WRITE(isp, INMAILBOX4, iptr);
   1931 		isp->isp_reqidx = iptr;
   1932 	}
   1933 }
   1934 
   1935 /*
   1936  * These are dummy stubs for now until the outside framework is plugged in.
   1937  */
   1938 
   1939 static void
   1940 isp_handle_atio (isp, aep)
   1941 	struct ispsoftc *isp;
   1942 	at_entry_t *aep;
   1943 {
   1944 	int status, connected;
   1945 	tmd_cmd_t local, *cdp = &local;
   1946 
   1947 	/*
   1948 	 * Get the ATIO status and see if we're still connected.
   1949 	 */
   1950 	status = aep->at_status;
   1951 	connected = ((aep->at_flags & AT_NODISC) != 0);
   1952 
   1953 	PRINTF("%s: ATIO status=0x%x, connected=%d\n", isp->isp_name,
   1954 	    status, connected);
   1955 
   1956 	/*
   1957 	 * The firmware status (except for the SenseValid bit) indicates
   1958 	 * why this ATIO was sent to us.
   1959 	 * If SenseValid is set, the firware has recommended Sense Data.
   1960 	 * If the Disconnects Disabled bit is set in the flags field,
   1961 	 * we're still connected on the SCSI bus - i.e. the initiator
   1962 	 * did not set DiscPriv in the identify message. We don't care
   1963 	 * about this so it's ignored.
   1964 	 */
   1965 	switch(status & ~TGTSVALID) {
   1966 	case AT_PATH_INVALID:
   1967 		/*
   1968 		 * ATIO rejected by the firmware due to disabled lun.
   1969 		 */
   1970 		PRINTF("%s: Firmware rejected ATIO for disabled lun %d\n",
   1971 		    isp->isp_name, aep->at_lun);
   1972 		break;
   1973 
   1974 	case AT_PHASE_ERROR:
   1975 		/*
   1976 		 * Bus Pase Sequence error.
   1977 		 *
   1978 		 * The firmware should have filled in the correct
   1979 		 * sense data.
   1980 		 */
   1981 
   1982 
   1983 		if (status & TGTSVALID) {
   1984 			bcopy((caddr_t) aep->at_sense,
   1985 			    (caddr_t) &cdp->cd_sensedata,
   1986 			    sizeof (cdp->cd_sensedata));
   1987 			PRINTF("%s: Bus Phase Sequence error key 0x%x\n",
   1988 			    isp->isp_name, cdp->cd_sensedata[2] & 0xf);
   1989 		} else {
   1990 			PRINTF("%s: Bus Phase Sequence With No Sense\n",
   1991 			    isp->isp_name);
   1992 		}
   1993 		(*isp->isp_tmd_newcmd)(isp, cdp);
   1994 		break;
   1995 
   1996 	case AT_NOCAP:
   1997 		/*
   1998 		 * Requested Capability not available
   1999 		 * We sent an ATIO that overflowed the firmware's
   2000 		 * command resource count.
   2001 		 */
   2002 		PRINTF("%s: Firmware rejected ATIO, command count overflow\n",
   2003 		    isp->isp_name);
   2004 		break;
   2005 
   2006 	case AT_BDR_MSG:
   2007 		/*
   2008 		 * If we send an ATIO to the firmware to increment
   2009 		 * its command resource count, and the firmware is
   2010 		 * recovering from a Bus Device Reset, it returns
   2011 		 * the ATIO with this status.
   2012 		 */
   2013 		PRINTF("%s: ATIO returned with BDR received\n", isp->isp_name);
   2014 		break;
   2015 
   2016 	case AT_CDB:
   2017 		/*
   2018 		 * New CDB
   2019 		 */
   2020 		cdp->cd_hba = isp;
   2021 		cdp->cd_iid = aep->at_iid;
   2022 		cdp->cd_tgt = aep->at_tgt;
   2023 		cdp->cd_lun = aep->at_lun;
   2024 		cdp->cd_tagtype = aep->at_tag_type;
   2025 		cdp->cd_tagval = aep->at_tag_val;
   2026 		bcopy(aep->at_cdb, cdp->cd_cdb, 16);
   2027 		PRINTF("%s: CDB 0x%x itl %d/%d/%d\n", isp->isp_name,
   2028 		    cdp->cd_cdb[0], cdp->cd_iid, cdp->cd_tgt, cdp->cd_lun);
   2029 		(*isp->isp_tmd_newcmd)(isp, cdp);
   2030 		break;
   2031 
   2032 	default:
   2033 		PRINTF("%s: Unknown status (0x%x) in ATIO\n",
   2034 		    isp->isp_name, status);
   2035 		cdp->cd_hba = isp;
   2036 		cdp->cd_iid = aep->at_iid;
   2037 		cdp->cd_tgt = aep->at_tgt;
   2038 		cdp->cd_lun = aep->at_lun;
   2039 		cdp->cd_tagtype = aep->at_tag_type;
   2040 		cdp->cd_tagval = aep->at_tag_val;
   2041 		isp_tgtcmd_done(cdp);
   2042 		break;
   2043 	}
   2044 }
   2045 
   2046 static void
   2047 isp_handle_atio2(isp, aep)
   2048 	struct ispsoftc *isp;
   2049 	at2_entry_t *aep;
   2050 {
   2051 	int status;
   2052 	tmd_cmd_t local, *cdp = &local;
   2053 
   2054 	/*
   2055 	 * Get the ATIO2 status.
   2056 	 */
   2057 	status = aep->at_status;
   2058 	PRINTD("%s: ATIO2 status=0x%x\n", status);
   2059 
   2060 	/*
   2061 	 * The firmware status (except for the SenseValid bit) indicates
   2062 	 * why this ATIO was sent to us.
   2063 	 * If SenseValid is set, the firware has recommended Sense Data.
   2064 	 */
   2065 	switch(status & ~TGTSVALID) {
   2066 	case AT_PATH_INVALID:
   2067 		/*
   2068 		 * ATIO rejected by the firmware due to disabled lun.
   2069 		 */
   2070 		PRINTF("%s: Firmware rejected ATIO2 for disabled lun %d\n",
   2071 		    isp->isp_name, aep->at_lun);
   2072 		break;
   2073 
   2074 	case AT_NOCAP:
   2075 		/*
   2076 		 * Requested Capability not available
   2077 		 * We sent an ATIO that overflowed the firmware's
   2078 		 * command resource count.
   2079 		 */
   2080 		PRINTF("%s: Firmware rejected ATIO2, command count overflow\n",
   2081 		    isp->isp_name);
   2082 		break;
   2083 
   2084 	case AT_BDR_MSG:
   2085 		/*
   2086 		 * If we send an ATIO to the firmware to increment
   2087 		 * its command resource count, and the firmware is
   2088 		 * recovering from a Bus Device Reset, it returns
   2089 		 * the ATIO with this status.
   2090 		 */
   2091 		PRINTF("%s: ATIO2 returned with BDR rcvd\n", isp->isp_name);
   2092 		break;
   2093 
   2094 	case AT_CDB:
   2095 		/*
   2096 		 * New CDB
   2097 		 */
   2098 		cdp->cd_hba = isp;
   2099 		cdp->cd_iid = aep->at_iid;
   2100 		cdp->cd_tgt = 0;
   2101 		cdp->cd_lun = aep->at_lun;
   2102 		bcopy(aep->at_cdb, cdp->cd_cdb, 16);
   2103 		cdp->cd_rxid = aep->at_rxid;
   2104 		cdp->cp_origdlen = aep->at_datalen;
   2105 		cdp->cp_totbytes = 0;
   2106 		PRINTF("%s: CDB 0x%x rx_id 0x%x itl %d/%d/%d dlen %d\n",
   2107 		    isp->isp_name, cdp->cd_cdb[0], cdp->cd_tagval, cdp->cd_iid,
   2108 		    cdp->cd_tgt, cdp->cd_lun, aep->at_datalen);
   2109 		(*isp->isp_tmd_newcmd)(isp, cdp);
   2110 		break;
   2111 
   2112 	default:
   2113 		PRINTF("%s: Unknown status (0x%x) in ATIO2\n",
   2114 		    isp->isp_name, status);
   2115 		cdp->cd_hba = isp;
   2116 		cdp->cd_iid = aep->at_iid;
   2117 		cdp->cd_tgt = aep->at_tgt;
   2118 		cdp->cd_lun = aep->at_lun;
   2119 		cdp->cp_rxid = aep->at_rxid;
   2120 		isp_tgtcmd_done(cdp);
   2121 		break;
   2122 	}
   2123 }
   2124 
   2125 static void
   2126 isp_handle_ctio(isp, cep)
   2127 	struct ispsoftc *isp;
   2128 	ct_entry_t *aep;
   2129 {
   2130 }
   2131 
   2132 static void
   2133 isp_handle_ctio2(isp, cep)
   2134 	struct ispsoftc *isp;
   2135 	at2_entry_t *aep;
   2136 {
   2137 }
   2138 #endif
   2139 
   2140 static void
   2141 isp_parse_status(isp, sp, xs)
   2142 	struct ispsoftc *isp;
   2143 	ispstatusreq_t *sp;
   2144 	ISP_SCSI_XFER_T *xs;
   2145 {
   2146 	switch (sp->req_completion_status) {
   2147 	case RQCS_COMPLETE:
   2148 		XS_SETERR(xs, HBA_NOERROR);
   2149 		return;
   2150 
   2151 	case RQCS_INCOMPLETE:
   2152 		if ((sp->req_state_flags & RQSF_GOT_TARGET) == 0) {
   2153 			IDPRINTF(3, ("%s: Selection Timeout for target %d\n",
   2154 			    isp->isp_name, XS_TGT(xs)));
   2155 			XS_SETERR(xs, HBA_SELTIMEOUT);
   2156 			return;
   2157 		}
   2158 		PRINTF("%s: command incomplete for target %d lun %d, state "
   2159 		    "0x%x\n", isp->isp_name, XS_TGT(xs), XS_LUN(xs),
   2160 		    sp->req_state_flags);
   2161 		break;
   2162 
   2163 	case RQCS_DMA_ERROR:
   2164 		PRINTF("%s: DMA error for command on target %d, lun %d\n",
   2165 		    isp->isp_name, XS_TGT(xs), XS_LUN(xs));
   2166 		break;
   2167 
   2168 	case RQCS_TRANSPORT_ERROR:
   2169 		PRINTF("%s: transport error\n", isp->isp_name);
   2170 		isp_prtstst(sp);
   2171 		break;
   2172 
   2173 	case RQCS_RESET_OCCURRED:
   2174 		IDPRINTF(2, ("%s: bus reset destroyed command for target %d "
   2175 		    "lun %d\n", isp->isp_name, XS_TGT(xs), XS_LUN(xs)));
   2176 		isp->isp_sendmarker = 1;
   2177 		XS_SETERR(xs, HBA_BUSRESET);
   2178 		return;
   2179 
   2180 	case RQCS_ABORTED:
   2181 		PRINTF("%s: command aborted for target %d lun %d\n",
   2182 		    isp->isp_name, XS_TGT(xs), XS_LUN(xs));
   2183 		isp->isp_sendmarker = 1;
   2184 		XS_SETERR(xs, HBA_ABORTED);
   2185 		return;
   2186 
   2187 	case RQCS_TIMEOUT:
   2188 		IDPRINTF(2, ("%s: command timed out for target %d lun %d\n",
   2189 		    isp->isp_name, XS_TGT(xs), XS_LUN(xs)));
   2190 		XS_SETERR(xs, HBA_CMDTIMEOUT);
   2191 		return;
   2192 
   2193 	case RQCS_DATA_OVERRUN:
   2194 		if (isp->isp_type & ISP_HA_FC) {
   2195 			XS_RESID(xs) = sp->req_resid;
   2196 			break;
   2197 		}
   2198 		XS_SETERR(xs, HBA_DATAOVR);
   2199 		return;
   2200 
   2201 	case RQCS_COMMAND_OVERRUN:
   2202 		PRINTF("%s: command overrun for command on target %d, lun %d\n",
   2203 		    isp->isp_name, XS_TGT(xs), XS_LUN(xs));
   2204 		break;
   2205 
   2206 	case RQCS_STATUS_OVERRUN:
   2207 		PRINTF("%s: status overrun for command on target %d, lun %d\n",
   2208 		    isp->isp_name, XS_TGT(xs), XS_LUN(xs));
   2209 		break;
   2210 
   2211 	case RQCS_BAD_MESSAGE:
   2212 		PRINTF("%s: message not COMMAND COMPLETE after status on "
   2213 		    "target %d, lun %d\n", isp->isp_name, XS_TGT(xs),
   2214 		    XS_LUN(xs));
   2215 		break;
   2216 
   2217 	case RQCS_NO_MESSAGE_OUT:
   2218 		PRINTF("%s: No MESSAGE OUT phase after selection on "
   2219 		    "target %d, lun %d\n", isp->isp_name, XS_TGT(xs),
   2220 		    XS_LUN(xs));
   2221 		break;
   2222 
   2223 	case RQCS_EXT_ID_FAILED:
   2224 		PRINTF("%s: EXTENDED IDENTIFY failed on target %d, lun %d\n",
   2225 		    isp->isp_name, XS_TGT(xs), XS_LUN(xs));
   2226 		break;
   2227 
   2228 	case RQCS_IDE_MSG_FAILED:
   2229 		PRINTF("%s: target %d lun %d rejected INITIATOR DETECTED "
   2230 		    "ERROR message\n", isp->isp_name, XS_TGT(xs), XS_LUN(xs));
   2231 		break;
   2232 
   2233 	case RQCS_ABORT_MSG_FAILED:
   2234 		PRINTF("%s: target %d lun %d rejected ABORT message\n",
   2235 		    isp->isp_name, XS_TGT(xs), XS_LUN(xs));
   2236 		break;
   2237 
   2238 	case RQCS_REJECT_MSG_FAILED:
   2239 		PRINTF("%s: target %d lun %d rejected MESSAGE REJECT message\n",
   2240 		    isp->isp_name, XS_TGT(xs), XS_LUN(xs));
   2241 		break;
   2242 
   2243 	case RQCS_NOP_MSG_FAILED:
   2244 		PRINTF("%s: target %d lun %d rejected NOP message\n",
   2245 		    isp->isp_name, XS_TGT(xs), XS_LUN(xs));
   2246 		break;
   2247 
   2248 	case RQCS_PARITY_ERROR_MSG_FAILED:
   2249 		PRINTF("%s: target %d lun %d rejected MESSAGE PARITY ERROR "
   2250 		    "message\n", isp->isp_name, XS_TGT(xs), XS_LUN(xs));
   2251 		break;
   2252 
   2253 	case RQCS_DEVICE_RESET_MSG_FAILED:
   2254 		PRINTF("%s: target %d lun %d rejected BUS DEVICE RESET "
   2255 		    "message\n", isp->isp_name, XS_TGT(xs), XS_LUN(xs));
   2256 		break;
   2257 
   2258 	case RQCS_ID_MSG_FAILED:
   2259 		PRINTF("%s: target %d lun %d rejected IDENTIFY "
   2260 		    "message\n", isp->isp_name, XS_TGT(xs), XS_LUN(xs));
   2261 		break;
   2262 
   2263 	case RQCS_UNEXP_BUS_FREE:
   2264 		PRINTF("%s: target %d lun %d had an unexpected bus free\n",
   2265 		    isp->isp_name, XS_TGT(xs), XS_LUN(xs));
   2266 		break;
   2267 
   2268 	case RQCS_DATA_UNDERRUN:
   2269 		if (isp->isp_type & ISP_HA_FC) {
   2270 			XS_RESID(xs) = sp->req_resid;
   2271 			/* an UNDERRUN is not a botch ??? */
   2272 		}
   2273 		XS_SETERR(xs, HBA_NOERROR);
   2274 		return;
   2275 
   2276 	case RQCS_XACT_ERR1:
   2277 		PRINTF("%s: HBA attempted queued transaction with disconnect "
   2278 		    "not set for target %d lun %d\n", isp->isp_name, XS_TGT(xs),
   2279 		    XS_LUN(xs));
   2280 		break;
   2281 
   2282 	case RQCS_XACT_ERR2:
   2283 		PRINTF("%s: HBA attempted queued transaction to target "
   2284 		    "routine %d on target %d\n", isp->isp_name, XS_LUN(xs),
   2285 		    XS_TGT(xs));
   2286 		break;
   2287 
   2288 	case RQCS_XACT_ERR3:
   2289 		PRINTF("%s: HBA attempted queued transaction for target %d lun "
   2290 		    "%d when queueing disabled\n", isp->isp_name, XS_TGT(xs),
   2291 		    XS_LUN(xs));
   2292 		break;
   2293 
   2294 	case RQCS_BAD_ENTRY:
   2295 		PRINTF("%s: invalid IOCB entry type detected\n", isp->isp_name);
   2296 		break;
   2297 
   2298 	case RQCS_QUEUE_FULL:
   2299 		PRINTF("%s: internal queues full for target %d lun %d\n",
   2300 		    isp->isp_name, XS_TGT(xs), XS_LUN(xs));
   2301 		break;
   2302 
   2303 	case RQCS_PHASE_SKIPPED:
   2304 		PRINTF("%s: SCSI phase skipped (e.g., COMMAND COMPLETE w/o "
   2305 		    "STATUS phase) for target %d lun %d\n", isp->isp_name,
   2306 		    XS_TGT(xs), XS_LUN(xs));
   2307 		break;
   2308 
   2309 	case RQCS_ARQS_FAILED:
   2310 		PRINTF("%s: Auto Request Sense failed for target %d lun %d\n",
   2311 		    isp->isp_name, XS_TGT(xs), XS_LUN(xs));
   2312 		XS_SETERR(xs, HBA_ARQFAIL);
   2313 		return;
   2314 
   2315 	case RQCS_WIDE_FAILED:
   2316 		PRINTF("%s: Wide Negotiation failed for target %d lun %d\n",
   2317 		    isp->isp_name, XS_TGT(xs), XS_LUN(xs));
   2318 		if (isp->isp_type & ISP_HA_SCSI) {
   2319 			sdparam *sdp = isp->isp_param;
   2320 			isp->isp_update = 1;
   2321 			sdp->isp_devparam[XS_TGT(xs)].dev_update = 1;
   2322 			sdp->isp_devparam[XS_TGT(xs)].dev_flags &= ~DPARM_WIDE;
   2323 		}
   2324 		XS_SETERR(xs, HBA_NOERROR);
   2325 		return;
   2326 
   2327 	case RQCS_SYNCXFER_FAILED:
   2328 		PRINTF("%s: SDTR Message failed for target %d lun %d\n",
   2329 		    isp->isp_name, XS_TGT(xs), XS_LUN(xs));
   2330 		if (isp->isp_type & ISP_HA_SCSI) {
   2331 			sdparam *sdp = isp->isp_param;
   2332 			isp->isp_update = 1;
   2333 			sdp->isp_devparam[XS_TGT(xs)].dev_update = 1;
   2334 			sdp->isp_devparam[XS_TGT(xs)].dev_flags &= ~DPARM_SYNC;
   2335 		}
   2336 		break;
   2337 
   2338 	case RQCS_LVD_BUSERR:
   2339 		PRINTF("%s: Bad LVD Bus condition while talking to target %d "
   2340 		    "lun %d\n", isp->isp_name, XS_TGT(xs), XS_LUN(xs));
   2341 		break;
   2342 
   2343 	case RQCS_PORT_UNAVAILABLE:
   2344 		/*
   2345 		 * No such port on the loop. Moral equivalent of SELTIMEO
   2346 		 */
   2347 		IDPRINTF(3, ("%s: Port Unavailable for target %d\n",
   2348 		    isp->isp_name, XS_TGT(xs)));
   2349 		XS_SETERR(xs, HBA_SELTIMEOUT);
   2350 		return;
   2351 
   2352 	case RQCS_PORT_LOGGED_OUT:
   2353 		/*
   2354 		 * It was there (maybe)- treat as a selection timeout.
   2355 		 */
   2356 		PRINTF("%s: port logout for target %d\n",
   2357 			isp->isp_name, XS_TGT(xs));
   2358 		XS_SETERR(xs, HBA_SELTIMEOUT);
   2359 		return;
   2360 
   2361 	case RQCS_PORT_CHANGED:
   2362 		PRINTF("%s: port changed for target %d\n",
   2363 			isp->isp_name, XS_TGT(xs));
   2364 		break;
   2365 
   2366 	case RQCS_PORT_BUSY:
   2367 		PRINTF("%s: port busy for target %d\n",
   2368 			isp->isp_name, XS_TGT(xs));
   2369 		XS_SETERR(xs, HBA_TGTBSY);
   2370 		return;
   2371 
   2372 	default:
   2373 		PRINTF("%s: comp status %x\n", isp->isp_name,
   2374 		       sp->req_completion_status);
   2375 		break;
   2376 	}
   2377 	XS_SETERR(xs, HBA_BOTCH);
   2378 }
   2379 
   2380 #define	HINIB(x)			((x) >> 0x4)
   2381 #define	LONIB(x)			((x)  & 0xf)
   2382 #define MAKNIB(a, b)			(((a) << 4) | (b))
   2383 static u_int8_t mbpcnt[] = {
   2384 	MAKNIB(1, 1),	/* 0x00: MBOX_NO_OP */
   2385 	MAKNIB(5, 5),	/* 0x01: MBOX_LOAD_RAM */
   2386 	MAKNIB(2, 0),	/* 0x02: MBOX_EXEC_FIRMWARE */
   2387 	MAKNIB(5, 5),	/* 0x03: MBOX_DUMP_RAM */
   2388 	MAKNIB(3, 3),	/* 0x04: MBOX_WRITE_RAM_WORD */
   2389 	MAKNIB(2, 3),	/* 0x05: MBOX_READ_RAM_WORD */
   2390 	MAKNIB(6, 6),	/* 0x06: MBOX_MAILBOX_REG_TEST */
   2391 	MAKNIB(2, 3),	/* 0x07: MBOX_VERIFY_CHECKSUM	*/
   2392 	MAKNIB(1, 3),	/* 0x08: MBOX_ABOUT_FIRMWARE */
   2393 	MAKNIB(0, 0),	/* 0x09: */
   2394 	MAKNIB(0, 0),	/* 0x0a: */
   2395 	MAKNIB(0, 0),	/* 0x0b: */
   2396 	MAKNIB(0, 0),	/* 0x0c: */
   2397 	MAKNIB(0, 0),	/* 0x0d: */
   2398 	MAKNIB(1, 2),	/* 0x0e: MBOX_CHECK_FIRMWARE */
   2399 	MAKNIB(0, 0),	/* 0x0f: */
   2400 	MAKNIB(5, 5),	/* 0x10: MBOX_INIT_REQ_QUEUE */
   2401 	MAKNIB(6, 6),	/* 0x11: MBOX_INIT_RES_QUEUE */
   2402 	MAKNIB(4, 4),	/* 0x12: MBOX_EXECUTE_IOCB */
   2403 	MAKNIB(2, 2),	/* 0x13: MBOX_WAKE_UP	*/
   2404 	MAKNIB(1, 6),	/* 0x14: MBOX_STOP_FIRMWARE */
   2405 	MAKNIB(4, 4),	/* 0x15: MBOX_ABORT */
   2406 	MAKNIB(2, 2),	/* 0x16: MBOX_ABORT_DEVICE */
   2407 	MAKNIB(3, 3),	/* 0x17: MBOX_ABORT_TARGET */
   2408 	MAKNIB(2, 2),	/* 0x18: MBOX_BUS_RESET */
   2409 	MAKNIB(2, 3),	/* 0x19: MBOX_STOP_QUEUE */
   2410 	MAKNIB(2, 3),	/* 0x1a: MBOX_START_QUEUE */
   2411 	MAKNIB(2, 3),	/* 0x1b: MBOX_SINGLE_STEP_QUEUE */
   2412 	MAKNIB(2, 3),	/* 0x1c: MBOX_ABORT_QUEUE */
   2413 	MAKNIB(2, 4),	/* 0x1d: MBOX_GET_DEV_QUEUE_STATUS */
   2414 	MAKNIB(0, 0),	/* 0x1e: */
   2415 	MAKNIB(1, 3),	/* 0x1f: MBOX_GET_FIRMWARE_STATUS */
   2416 	MAKNIB(1, 3),	/* 0x20: MBOX_GET_INIT_SCSI_ID, MBOX_GET_LOOP_ID */
   2417 	MAKNIB(1, 2),	/* 0x21: MBOX_GET_SELECT_TIMEOUT */
   2418 	MAKNIB(1, 3),	/* 0x22: MBOX_GET_RETRY_COUNT	*/
   2419 	MAKNIB(1, 2),	/* 0x23: MBOX_GET_TAG_AGE_LIMIT */
   2420 	MAKNIB(1, 2),	/* 0x24: MBOX_GET_CLOCK_RATE */
   2421 	MAKNIB(1, 2),	/* 0x25: MBOX_GET_ACT_NEG_STATE */
   2422 	MAKNIB(1, 2),	/* 0x26: MBOX_GET_ASYNC_DATA_SETUP_TIME */
   2423 	MAKNIB(1, 3),	/* 0x27: MBOX_GET_PCI_PARAMS */
   2424 	MAKNIB(2, 4),	/* 0x28: MBOX_GET_TARGET_PARAMS */
   2425 	MAKNIB(2, 4),	/* 0x29: MBOX_GET_DEV_QUEUE_PARAMS */
   2426 	MAKNIB(0, 0),	/* 0x2a: */
   2427 	MAKNIB(0, 0),	/* 0x2b: */
   2428 	MAKNIB(0, 0),	/* 0x2c: */
   2429 	MAKNIB(0, 0),	/* 0x2d: */
   2430 	MAKNIB(0, 0),	/* 0x2e: */
   2431 	MAKNIB(0, 0),	/* 0x2f: */
   2432 	MAKNIB(2, 2),	/* 0x30: MBOX_SET_INIT_SCSI_ID */
   2433 	MAKNIB(2, 2),	/* 0x31: MBOX_SET_SELECT_TIMEOUT */
   2434 	MAKNIB(3, 3),	/* 0x32: MBOX_SET_RETRY_COUNT	*/
   2435 	MAKNIB(2, 2),	/* 0x33: MBOX_SET_TAG_AGE_LIMIT */
   2436 	MAKNIB(2, 2),	/* 0x34: MBOX_SET_CLOCK_RATE */
   2437 	MAKNIB(2, 2),	/* 0x35: MBOX_SET_ACTIVE_NEG_STATE */
   2438 	MAKNIB(2, 2),	/* 0x36: MBOX_SET_ASYNC_DATA_SETUP_TIME */
   2439 	MAKNIB(3, 3),	/* 0x37: MBOX_SET_PCI_CONTROL_PARAMS */
   2440 	MAKNIB(4, 4),	/* 0x38: MBOX_SET_TARGET_PARAMS */
   2441 	MAKNIB(4, 4),	/* 0x39: MBOX_SET_DEV_QUEUE_PARAMS */
   2442 	MAKNIB(0, 0),	/* 0x3a: */
   2443 	MAKNIB(0, 0),	/* 0x3b: */
   2444 	MAKNIB(0, 0),	/* 0x3c: */
   2445 	MAKNIB(0, 0),	/* 0x3d: */
   2446 	MAKNIB(0, 0),	/* 0x3e: */
   2447 	MAKNIB(0, 0),	/* 0x3f: */
   2448 	MAKNIB(1, 2),	/* 0x40: MBOX_RETURN_BIOS_BLOCK_ADDR */
   2449 	MAKNIB(6, 1),	/* 0x41: MBOX_WRITE_FOUR_RAM_WORDS */
   2450 	MAKNIB(2, 3),	/* 0x42: MBOX_EXEC_BIOS_IOCB */
   2451 	MAKNIB(0, 0),	/* 0x43: */
   2452 	MAKNIB(0, 0),	/* 0x44: */
   2453 	MAKNIB(0, 0),	/* 0x45: */
   2454 	MAKNIB(0, 0),	/* 0x46: */
   2455 	MAKNIB(0, 0),	/* 0x47: */
   2456 	MAKNIB(0, 0),	/* 0x48: */
   2457 	MAKNIB(0, 0),	/* 0x49: */
   2458 	MAKNIB(0, 0),	/* 0x4a: */
   2459 	MAKNIB(0, 0),	/* 0x4b: */
   2460 	MAKNIB(0, 0),	/* 0x4c: */
   2461 	MAKNIB(0, 0),	/* 0x4d: */
   2462 	MAKNIB(0, 0),	/* 0x4e: */
   2463 	MAKNIB(0, 0),	/* 0x4f: */
   2464 	MAKNIB(0, 0),	/* 0x50: */
   2465 	MAKNIB(0, 0),	/* 0x51: */
   2466 	MAKNIB(0, 0),	/* 0x52: */
   2467 	MAKNIB(0, 0),	/* 0x53: */
   2468 	MAKNIB(8, 0),	/* 0x54: MBOX_EXEC_COMMAND_IOCB_A64 */
   2469 	MAKNIB(0, 0),	/* 0x55: */
   2470 	MAKNIB(0, 0),	/* 0x56: */
   2471 	MAKNIB(0, 0),	/* 0x57: */
   2472 	MAKNIB(0, 0),	/* 0x58: */
   2473 	MAKNIB(0, 0),	/* 0x59: */
   2474 	MAKNIB(0, 0),	/* 0x5a: */
   2475 	MAKNIB(0, 0),	/* 0x5b: */
   2476 	MAKNIB(0, 0),	/* 0x5c: */
   2477 	MAKNIB(0, 0),	/* 0x5d: */
   2478 	MAKNIB(0, 0),	/* 0x5e: */
   2479 	MAKNIB(0, 0),	/* 0x5f: */
   2480 	MAKNIB(8, 6),	/* 0x60: MBOX_INIT_FIRMWARE */
   2481 	MAKNIB(0, 0),	/* 0x60: MBOX_GET_INIT_CONTROL_BLOCK  (FORMAT?) */
   2482 	MAKNIB(2, 1),	/* 0x62: MBOX_INIT_LIP */
   2483 	MAKNIB(8, 1),	/* 0x63: MBOX_GET_FC_AL_POSITION_MAP */
   2484 	MAKNIB(8, 1),	/* 0x64: MBOX_GET_PORT_DB */
   2485 	MAKNIB(3, 1),	/* 0x65: MBOX_CLEAR_ACA */
   2486 	MAKNIB(3, 1),	/* 0x66: MBOX_TARGET_RESET */
   2487 	MAKNIB(3, 1),	/* 0x67: MBOX_CLEAR_TASK_SET */
   2488 	MAKNIB(3, 1),	/* 0x69: MBOX_ABORT_TASK_SET */
   2489 	MAKNIB(1, 2)	/* 0x69: MBOX_GET_FW_STATE */
   2490 };
   2491 #define	NMBCOM	(sizeof (mbpcnt) / sizeof (mbpcnt[0]))
   2492 
   2493 static void
   2494 isp_mboxcmd(isp, mbp)
   2495 	struct ispsoftc *isp;
   2496 	mbreg_t *mbp;
   2497 {
   2498 	int outparam, inparam;
   2499 	int loops, dld = 0;
   2500 	u_int8_t opcode;
   2501 
   2502 	if (mbp->param[0] == ISP2100_SET_PCI_PARAM) {
   2503 		opcode = mbp->param[0] = MBOX_SET_PCI_PARAMETERS;
   2504 		inparam = 4;
   2505 		outparam = 4;
   2506 		goto command_known;
   2507 	} else if (mbp->param[0] > NMBCOM) {
   2508 		PRINTF("%s: bad command %x\n", isp->isp_name, mbp->param[0]);
   2509 		return;
   2510 	}
   2511 
   2512 	opcode = mbp->param[0];
   2513 	inparam = HINIB(mbpcnt[mbp->param[0]]);
   2514 	outparam =  LONIB(mbpcnt[mbp->param[0]]);
   2515 
   2516 	if (inparam == 0 && outparam == 0) {
   2517 		PRINTF("%s: no parameters for %x\n", isp->isp_name,
   2518 			mbp->param[0]);
   2519 		return;
   2520 	}
   2521 
   2522 
   2523 	/*
   2524 	 * Check for variants
   2525 	 */
   2526 #ifdef	SCCLUN
   2527 	if (isp->isp_type & ISP_HA_FC) {
   2528 		switch (mbp->param[0]) {
   2529 		case MBOX_ABORT:
   2530 			inparam = 7;
   2531 			break;
   2532 		case MBOX_ABORT_DEVICE:
   2533 		case MBOX_START_QUEUE:
   2534 		case MBOX_STOP_QUEUE:
   2535 		case MBOX_SINGLE_STEP_QUEUE:
   2536 		case MBOX_ABORT_QUEUE:
   2537 		case MBOX_GET_DEV_QUEUE_STATUS:
   2538 			inparam = 3;
   2539 			break;
   2540 		default:
   2541 			break;
   2542 		}
   2543 	}
   2544 #endif
   2545 
   2546 command_known:
   2547 
   2548 	/*
   2549 	 * Make sure we can send some words..
   2550 	 */
   2551 
   2552 	loops = MBOX_DELAY_COUNT;
   2553 	while ((ISP_READ(isp, HCCR) & HCCR_HOST_INT) != 0) {
   2554 		SYS_DELAY(100);
   2555 		if (--loops < 0) {
   2556 			PRINTF("%s: isp_mboxcmd timeout #1\n", isp->isp_name);
   2557 			if (dld++) {
   2558 				return;
   2559 			}
   2560 			PRINTF("%s: but we'll try again, isr=%x\n",
   2561 			    isp->isp_name, ISP_READ(isp, BIU_ISR));
   2562 			if (ISP_READ(isp, BIU_SEMA) & 1) {
   2563 				u_int16_t mbox = ISP_READ(isp, OUTMAILBOX0);
   2564 				if (isp_parse_async(isp, (int) mbox))
   2565 					return;
   2566 				ISP_WRITE(isp, BIU_SEMA, 0);
   2567 			}
   2568 			ISP_WRITE(isp, HCCR, HCCR_CMD_CLEAR_RISC_INT);
   2569 			goto command_known;
   2570 		}
   2571 	}
   2572 
   2573 	/*
   2574 	 * Write input parameters
   2575 	 */
   2576 	switch (inparam) {
   2577 	case 8: ISP_WRITE(isp, INMAILBOX7, mbp->param[7]); mbp->param[7] = 0;
   2578 	case 7: ISP_WRITE(isp, INMAILBOX6, mbp->param[6]); mbp->param[6] = 0;
   2579 	case 6: ISP_WRITE(isp, INMAILBOX5, mbp->param[5]); mbp->param[5] = 0;
   2580 	case 5: ISP_WRITE(isp, INMAILBOX4, mbp->param[4]); mbp->param[4] = 0;
   2581 	case 4: ISP_WRITE(isp, INMAILBOX3, mbp->param[3]); mbp->param[3] = 0;
   2582 	case 3: ISP_WRITE(isp, INMAILBOX2, mbp->param[2]); mbp->param[2] = 0;
   2583 	case 2: ISP_WRITE(isp, INMAILBOX1, mbp->param[1]); mbp->param[1] = 0;
   2584 	case 1: ISP_WRITE(isp, INMAILBOX0, mbp->param[0]); mbp->param[0] = 0;
   2585 	}
   2586 
   2587 	/*
   2588 	 * Clear semaphore on mailbox registers
   2589 	 */
   2590 	ISP_WRITE(isp, BIU_SEMA, 0);
   2591 
   2592 	/*
   2593 	 * Clear RISC int condition.
   2594 	 */
   2595 	ISP_WRITE(isp, HCCR, HCCR_CMD_CLEAR_RISC_INT);
   2596 
   2597 	/*
   2598 	 * Set Host Interrupt condition so that RISC will pick up mailbox regs.
   2599 	 */
   2600 	ISP_WRITE(isp, HCCR, HCCR_CMD_SET_HOST_INT);
   2601 
   2602 	/*
   2603 	 * Wait until RISC int is set, except 2100
   2604 	 */
   2605 	if ((isp->isp_type & ISP_HA_FC) == 0) {
   2606 		loops = MBOX_DELAY_COUNT;
   2607 		while ((ISP_READ(isp, BIU_ISR) & BIU_ISR_RISC_INT) == 0) {
   2608 			SYS_DELAY(100);
   2609 			if (--loops < 0) {
   2610 				PRINTF("%s: isp_mboxcmd timeout #2\n",
   2611 				    isp->isp_name);
   2612 				return;
   2613 			}
   2614 		}
   2615 	}
   2616 
   2617 	/*
   2618 	 * Check to make sure that the semaphore has been set.
   2619 	 */
   2620 	loops = MBOX_DELAY_COUNT;
   2621 	while ((ISP_READ(isp, BIU_SEMA) & 1) == 0) {
   2622 		SYS_DELAY(100);
   2623 		if (--loops < 0) {
   2624 			PRINTF("%s: isp_mboxcmd timeout #3\n", isp->isp_name);
   2625 			return;
   2626 		}
   2627 	}
   2628 
   2629 	/*
   2630 	 * Make sure that the MBOX_BUSY has gone away
   2631 	 */
   2632 	loops = MBOX_DELAY_COUNT;
   2633 	while (ISP_READ(isp, OUTMAILBOX0) == MBOX_BUSY) {
   2634 		SYS_DELAY(100);
   2635 		if (--loops < 0) {
   2636 			PRINTF("%s: isp_mboxcmd timeout #4\n", isp->isp_name);
   2637 			return;
   2638 		}
   2639 	}
   2640 
   2641 
   2642 	/*
   2643 	 * Pick up output parameters.
   2644 	 */
   2645 	switch (outparam) {
   2646 	case 8: mbp->param[7] = ISP_READ(isp, OUTMAILBOX7);
   2647 	case 7: mbp->param[6] = ISP_READ(isp, OUTMAILBOX6);
   2648 	case 6: mbp->param[5] = ISP_READ(isp, OUTMAILBOX5);
   2649 	case 5: mbp->param[4] = ISP_READ(isp, OUTMAILBOX4);
   2650 	case 4: mbp->param[3] = ISP_READ(isp, OUTMAILBOX3);
   2651 	case 3: mbp->param[2] = ISP_READ(isp, OUTMAILBOX2);
   2652 	case 2: mbp->param[1] = ISP_READ(isp, OUTMAILBOX1);
   2653 	case 1: mbp->param[0] = ISP_READ(isp, OUTMAILBOX0);
   2654 	}
   2655 
   2656 	/*
   2657 	 * Clear RISC int.
   2658 	 */
   2659 	ISP_WRITE(isp, HCCR, HCCR_CMD_CLEAR_RISC_INT);
   2660 
   2661 	/*
   2662 	 * Release semaphore on mailbox registers
   2663 	 */
   2664 	ISP_WRITE(isp, BIU_SEMA, 0);
   2665 
   2666 	/*
   2667 	 * Just to be chatty here...
   2668 	 */
   2669 	switch(mbp->param[0]) {
   2670 	case MBOX_COMMAND_COMPLETE:
   2671 		break;
   2672 	case MBOX_INVALID_COMMAND:
   2673 		IDPRINTF(2, ("%s: mbox cmd %x failed with INVALID_COMMAND\n",
   2674 		    isp->isp_name, opcode));
   2675 		break;
   2676 	case MBOX_HOST_INTERFACE_ERROR:
   2677 		PRINTF("%s: mbox cmd %x failed with HOST_INTERFACE_ERROR\n",
   2678 		    isp->isp_name, opcode);
   2679 		break;
   2680 	case MBOX_TEST_FAILED:
   2681 		PRINTF("%s: mbox cmd %x failed with TEST_FAILED\n",
   2682 		    isp->isp_name, opcode);
   2683 		break;
   2684 	case MBOX_COMMAND_ERROR:
   2685 		PRINTF("%s: mbox cmd %x failed with COMMAND_ERROR\n",
   2686 		    isp->isp_name, opcode);
   2687 		break;
   2688 	case MBOX_COMMAND_PARAM_ERROR:
   2689 		PRINTF("%s: mbox cmd %x failed with COMMAND_PARAM_ERROR\n",
   2690 		    isp->isp_name, opcode);
   2691 		break;
   2692 
   2693 	/*
   2694 	 * Be silent about these...
   2695 	 */
   2696 
   2697 	case ASYNC_LOOP_UP:
   2698 	case ASYNC_LIP_OCCURRED:
   2699 	case ASYNC_PDB_CHANGED:
   2700 		break;
   2701 
   2702 	default:
   2703 		/*
   2704 		 * The expected return of EXEC_FIRMWARE is zero.
   2705 		 */
   2706 		if ((opcode == MBOX_EXEC_FIRMWARE && mbp->param[0] != 0) ||
   2707 		    (opcode != MBOX_EXEC_FIRMWARE)) {
   2708 			PRINTF("%s: mbox cmd %x failed with error %x\n",
   2709 				isp->isp_name, opcode, mbp->param[0]);
   2710 		}
   2711 		break;
   2712 	}
   2713 }
   2714 
   2715 void
   2716 isp_lostcmd(isp, xs)
   2717 	struct ispsoftc *isp;
   2718 	ISP_SCSI_XFER_T *xs;
   2719 {
   2720 	mbreg_t mbs;
   2721 
   2722 	mbs.param[0] = MBOX_GET_FIRMWARE_STATUS;
   2723 	isp_mboxcmd(isp, &mbs);
   2724 	if (mbs.param[0] != MBOX_COMMAND_COMPLETE) {
   2725 		isp_dumpregs(isp, "couldn't GET FIRMWARE STATUS");
   2726 		return;
   2727 	}
   2728 	if (mbs.param[1]) {
   2729 		PRINTF("%s: %d commands on completion queue\n",
   2730 		       isp->isp_name, mbs.param[1]);
   2731 	}
   2732 	if (XS_NULL(xs))
   2733 		return;
   2734 
   2735 	mbs.param[0] = MBOX_GET_DEV_QUEUE_STATUS;
   2736 	mbs.param[1] = (XS_TGT(xs) << 8) | XS_LUN(xs);
   2737 	isp_mboxcmd(isp, &mbs);
   2738 	if (mbs.param[0] != MBOX_COMMAND_COMPLETE) {
   2739 		isp_dumpregs(isp, "couldn't GET DEVICE QUEUE STATUS");
   2740 		return;
   2741 	}
   2742 	PRINTF("%s: lost command for target %d lun %d, %d active of %d, "
   2743 		"Queue State: %x\n", isp->isp_name, XS_TGT(xs),
   2744 		XS_LUN(xs), mbs.param[2], mbs.param[3], mbs.param[1]);
   2745 
   2746 	isp_dumpregs(isp, "lost command");
   2747 	/*
   2748 	 * XXX: Need to try and do something to recover.
   2749 	 */
   2750 }
   2751 
   2752 static void
   2753 isp_dumpregs(isp, msg)
   2754 	struct ispsoftc *isp;
   2755 	const char *msg;
   2756 {
   2757 	PRINTF("%s: %s\n", isp->isp_name, msg);
   2758 	if (isp->isp_type & ISP_HA_SCSI)
   2759 		PRINTF("    biu_conf1=%x", ISP_READ(isp, BIU_CONF1));
   2760 	else
   2761 		PRINTF("    biu_csr=%x", ISP_READ(isp, BIU2100_CSR));
   2762 	PRINTF(" biu_icr=%x biu_isr=%x biu_sema=%x ", ISP_READ(isp, BIU_ICR),
   2763 	       ISP_READ(isp, BIU_ISR), ISP_READ(isp, BIU_SEMA));
   2764 	PRINTF("risc_hccr=%x\n", ISP_READ(isp, HCCR));
   2765 
   2766 	if (isp->isp_type & ISP_HA_SCSI) {
   2767 		ISP_WRITE(isp, HCCR, HCCR_CMD_PAUSE);
   2768 		PRINTF("    cdma_conf=%x cdma_sts=%x cdma_fifostat=%x\n",
   2769 			ISP_READ(isp, CDMA_CONF), ISP_READ(isp, CDMA_STATUS),
   2770 			ISP_READ(isp, CDMA_FIFO_STS));
   2771 		PRINTF("    ddma_conf=%x ddma_sts=%x ddma_fifostat=%x\n",
   2772 			ISP_READ(isp, DDMA_CONF), ISP_READ(isp, DDMA_STATUS),
   2773 			ISP_READ(isp, DDMA_FIFO_STS));
   2774 		PRINTF("    sxp_int=%x sxp_gross=%x sxp(scsi_ctrl)=%x\n",
   2775 			ISP_READ(isp, SXP_INTERRUPT),
   2776 			ISP_READ(isp, SXP_GROSS_ERR),
   2777 			ISP_READ(isp, SXP_PINS_CONTROL));
   2778 		ISP_WRITE(isp, HCCR, HCCR_CMD_RELEASE);
   2779 	}
   2780 	ISP_DUMPREGS(isp);
   2781 }
   2782 
   2783 static void
   2784 isp_dumpxflist(isp)
   2785 	struct ispsoftc *isp;
   2786 {
   2787 	volatile ISP_SCSI_XFER_T *xs;
   2788 	int i, hdp;
   2789 
   2790 	for (hdp = i = 0; i < RQUEST_QUEUE_LEN; i++) {
   2791 		xs = isp->isp_xflist[i];
   2792 		if (xs == NULL) {
   2793 			continue;
   2794 		}
   2795 		if (hdp == 0) {
   2796 			PRINTF("%s: active requests\n", isp->isp_name);
   2797 			hdp++;
   2798 		}
   2799 		PRINTF(" Active Handle %d: tgt %d lun %d dlen %d\n",
   2800 		    i+1, XS_TGT(xs), XS_LUN(xs), XS_XFRLEN(xs));
   2801 	}
   2802 }
   2803 
   2804 static void
   2805 isp_fw_state(isp)
   2806 	struct ispsoftc *isp;
   2807 {
   2808 	mbreg_t mbs;
   2809 	if (isp->isp_type & ISP_HA_FC) {
   2810 		int once = 0;
   2811 		fcparam *fcp = isp->isp_param;
   2812 again:
   2813 		mbs.param[0] = MBOX_GET_FW_STATE;
   2814 		isp_mboxcmd(isp, &mbs);
   2815 		if (mbs.param[0] != MBOX_COMMAND_COMPLETE) {
   2816 			if (mbs.param[0] == ASYNC_LIP_OCCURRED ||
   2817 			    mbs.param[0] == ASYNC_PDB_CHANGED ||
   2818 			    mbs.param[0] == ASYNC_LOOP_UP) {
   2819 				if (once++ < 2) {
   2820 					goto again;
   2821 				}
   2822 			}
   2823 			isp_dumpregs(isp, "GET FIRMWARE STATE failed");
   2824 			return;
   2825 		}
   2826 		fcp->isp_fwstate = mbs.param[1];
   2827 	}
   2828 }
   2829 
   2830 static void
   2831 isp_update(isp)
   2832 	struct ispsoftc *isp;
   2833 {
   2834 	int tgt;
   2835 	mbreg_t mbs;
   2836 	sdparam *sdp;
   2837 
   2838 	isp->isp_update = 0;
   2839 
   2840 	if (isp->isp_type & ISP_HA_FC) {
   2841 		return;
   2842 	}
   2843 
   2844 	sdp = isp->isp_param;
   2845 	for (tgt = 0; tgt < MAX_TARGETS; tgt++) {
   2846 		if (sdp->isp_devparam[tgt].dev_enable == 0) {
   2847 			continue;
   2848 		}
   2849 		if (sdp->isp_devparam[tgt].dev_update == 0) {
   2850 			continue;
   2851 		}
   2852 
   2853 		mbs.param[0] = MBOX_SET_TARGET_PARAMS;
   2854 		mbs.param[1] = tgt << 8;
   2855 		mbs.param[2] = sdp->isp_devparam[tgt].dev_flags;
   2856 		mbs.param[3] =
   2857 			(sdp->isp_devparam[tgt].sync_offset << 8) |
   2858 			(sdp->isp_devparam[tgt].sync_period);
   2859 
   2860 		IDPRINTF(3, ("\n%s: tgt %d cflags %x offset %x period %x\n",
   2861 		    isp->isp_name, tgt, mbs.param[2], mbs.param[3] >> 8,
   2862 		    mbs.param[3] & 0xff));
   2863 
   2864 		isp_mboxcmd(isp, &mbs);
   2865 		if (mbs.param[0] != MBOX_COMMAND_COMPLETE) {
   2866 			PRINTF("%s: failed to change SCSI parameters for "
   2867 			    "target %d\n", isp->isp_name, tgt);
   2868 		} else {
   2869 			char *wt;
   2870 			int x, flags;
   2871 
   2872 			flags = sdp->isp_devparam[tgt].cur_dflags =
   2873 			    sdp->isp_devparam[tgt].dev_flags;
   2874 
   2875 			x = sdp->isp_devparam[tgt].sync_period & 0xff;
   2876 			if (flags & DPARM_SYNC) {
   2877 				if (x == (ISP_20M_SYNCPARMS & 0xff)) {
   2878 					x = 20;
   2879 				} else if (x == (ISP_10M_SYNCPARMS & 0xff)) {
   2880 					x = 10;
   2881 				} else if (x == (ISP_08M_SYNCPARMS & 0xff)) {
   2882 					x = 8;
   2883 				} else if (x == (ISP_05M_SYNCPARMS & 0xff)) {
   2884 					x = 5;
   2885 				} else if (x == (ISP_04M_SYNCPARMS & 0xff)) {
   2886 					x = 4;
   2887 				} else {
   2888 					x = 0;
   2889 				}
   2890 			} else {
   2891 				x = 0;
   2892 			}
   2893 			switch (flags & (DPARM_WIDE|DPARM_TQING)) {
   2894 			case DPARM_WIDE:
   2895 				wt = ", 16 bit wide\n";
   2896 				break;
   2897 			case DPARM_TQING:
   2898 				wt = ", Tagged Queueing Enabled\n";
   2899 				break;
   2900 			case DPARM_WIDE|DPARM_TQING:
   2901 				wt = ", 16 bit wide, Tagged Queueing Enabled\n";
   2902 				break;
   2903 
   2904 			default:
   2905 				wt = "\n";
   2906 				break;
   2907 			}
   2908 			if (x) {
   2909 				IDPRINTF(3, ("%s: Target %d maximum Sync Mode "
   2910 				    "at %dMHz%s", isp->isp_name, tgt, x, wt));
   2911 			} else {
   2912 				IDPRINTF(3, ("%s: Target %d Async Mode%s",
   2913 				    isp->isp_name, tgt, wt));
   2914 			}
   2915 		}
   2916 		sdp->isp_devparam[tgt].dev_update = 0;
   2917 	}
   2918 }
   2919 
   2920 static void
   2921 isp_setdfltparm(isp)
   2922 	struct ispsoftc *isp;
   2923 {
   2924 	int i, use_nvram;
   2925 	mbreg_t mbs;
   2926 	sdparam *sdp;
   2927 
   2928 	/*
   2929 	 * Been there, done that, got the T-shirt...
   2930 	 */
   2931 	if (isp->isp_gotdparms) {
   2932 		IDPRINTF(3, ("%s: already have dparms\n", isp->isp_name));
   2933 		return;
   2934 	}
   2935 	isp->isp_gotdparms = 1;
   2936 
   2937 	use_nvram = (isp_read_nvram(isp) == 0);
   2938 	if (use_nvram) {
   2939 		return;
   2940 	}
   2941 	if (isp->isp_type & ISP_HA_FC) {
   2942 		fcparam *fcp = (fcparam *) isp->isp_param;
   2943 		fcp->isp_maxfrmlen = ICB_DFLT_FRMLEN;
   2944 		fcp->isp_maxalloc = 256;
   2945 		fcp->isp_execthrottle = 16;
   2946 		fcp->isp_retry_delay = 5;
   2947 		fcp->isp_retry_count = 0;
   2948 		/*
   2949 		 * It would be nice to fake up a WWN in case we don't
   2950 		 * get one out of NVRAM. Solaris does this for SOCAL
   2951 		 * cards that don't have SBus properties- it sets up
   2952 		 * a WWN based upon the system MAC Address.
   2953 		 */
   2954 		fcp->isp_wwn = 0;
   2955 		return;
   2956 	}
   2957 
   2958 	sdp = (sdparam *) isp->isp_param;
   2959 	mbs.param[0] = MBOX_GET_ACT_NEG_STATE;
   2960 	isp_mboxcmd(isp, &mbs);
   2961 	if (mbs.param[0] != MBOX_COMMAND_COMPLETE) {
   2962 		IDPRINTF(2, ("could not GET ACT NEG STATE\n"));
   2963 		sdp->isp_req_ack_active_neg = 1;
   2964 		sdp->isp_data_line_active_neg = 1;
   2965 	} else {
   2966 		sdp->isp_req_ack_active_neg = (mbs.param[1] >> 4) & 0x1;
   2967 		sdp->isp_data_line_active_neg = (mbs.param[1] >> 5) & 0x1;
   2968 	}
   2969 	for (i = 0; i < MAX_TARGETS; i++) {
   2970 
   2971 		mbs.param[0] = MBOX_GET_TARGET_PARAMS;
   2972 		mbs.param[1] = i << 8;
   2973 		isp_mboxcmd(isp, &mbs);
   2974 		if (mbs.param[0] != MBOX_COMMAND_COMPLETE) {
   2975 			PRINTF("%s: can't get SCSI parameters for target %d\n",
   2976 			    isp->isp_name, i);
   2977 			sdp->isp_devparam[i].sync_period = 0;
   2978 			sdp->isp_devparam[i].sync_offset = 0;
   2979 			sdp->isp_devparam[i].dev_flags = DPARM_SAFE_DFLT;
   2980 			continue;
   2981 		}
   2982 		sdp->isp_devparam[i].dev_flags = mbs.param[2];
   2983 
   2984 		/*
   2985 		 * The maximum period we can really see
   2986 		 * here is 100 (decimal), or 400 ns.
   2987 		 * For some unknown reason we sometimes
   2988 		 * get back wildass numbers from the
   2989 		 * boot device's parameters.
   2990 		 *
   2991 		 * XXX: Hmm- this may be based on a different
   2992 		 * XXX: clock rate.
   2993 		 */
   2994 		if ((mbs.param[3] & 0xff) <= 0x64) {
   2995 			sdp->isp_devparam[i].sync_period = mbs.param[3] & 0xff;
   2996 			sdp->isp_devparam[i].sync_offset = mbs.param[3] >> 8;
   2997 		}
   2998 
   2999 		/*
   3000 		 * It is not safe to run Ultra Mode with a clock < 60.
   3001 		 */
   3002 		if (((sdp->isp_clock && sdp->isp_clock < 60) ||
   3003 		    (isp->isp_type < ISP_HA_SCSI_1020A)) &&
   3004 		    (sdp->isp_devparam[i].sync_period ==
   3005 		    (ISP_20M_SYNCPARMS & 0xff))) {
   3006 			sdp->isp_devparam[i].sync_offset =
   3007 				ISP_10M_SYNCPARMS >> 8;
   3008 			sdp->isp_devparam[i].sync_period =
   3009 				ISP_10M_SYNCPARMS & 0xff;
   3010 		}
   3011 
   3012 	}
   3013 
   3014 	/*
   3015 	 * Set Default Host Adapter Parameters
   3016 	 */
   3017 	sdp->isp_cmd_dma_burst_enable = 1;
   3018 	sdp->isp_data_dma_burst_enabl = 1;
   3019 	sdp->isp_fifo_threshold = 0;
   3020 	sdp->isp_initiator_id = 7;
   3021 	if (isp->isp_type >= ISP_HA_SCSI_1040) {
   3022 		sdp->isp_async_data_setup = 9;
   3023 	} else {
   3024 		sdp->isp_async_data_setup = 6;
   3025 	}
   3026 	sdp->isp_selection_timeout = 250;
   3027 	sdp->isp_max_queue_depth = 128;
   3028 	sdp->isp_tag_aging = 8;
   3029 	sdp->isp_bus_reset_delay = 3;
   3030 	sdp->isp_retry_count = 0;
   3031 	sdp->isp_retry_delay = 1;
   3032 
   3033 	for (i = 0; i < MAX_TARGETS; i++) {
   3034 		sdp->isp_devparam[i].exc_throttle = 16;
   3035 		sdp->isp_devparam[i].dev_enable = 1;
   3036 	}
   3037 }
   3038 
   3039 /*
   3040  * Re-initialize the ISP and complete all orphaned commands
   3041  * with a 'botched' notice.
   3042  *
   3043  * Locks held prior to coming here.
   3044  */
   3045 
   3046 void
   3047 isp_restart(isp)
   3048 	struct ispsoftc *isp;
   3049 {
   3050 	ISP_SCSI_XFER_T *tlist[RQUEST_QUEUE_LEN], *xs;
   3051 	int i;
   3052 
   3053 	for (i = 0; i < RQUEST_QUEUE_LEN; i++) {
   3054 		tlist[i] = (ISP_SCSI_XFER_T *) isp->isp_xflist[i];
   3055 		isp->isp_xflist[i] = NULL;
   3056 	}
   3057 	isp_reset(isp);
   3058 	if (isp->isp_state == ISP_RESETSTATE) {
   3059 		isp_init(isp);
   3060 		if (isp->isp_state == ISP_INITSTATE) {
   3061 			isp->isp_state = ISP_RUNSTATE;
   3062 		}
   3063 	}
   3064 	if (isp->isp_state != ISP_RUNSTATE) {
   3065 		PRINTF("%s: isp_restart cannot restart ISP\n", isp->isp_name);
   3066 	}
   3067 
   3068 	for (i = 0; i < RQUEST_QUEUE_LEN; i++) {
   3069 		xs = tlist[i];
   3070 		if (XS_NULL(xs)) {
   3071 			continue;
   3072 		}
   3073 		if (isp->isp_nactive > 0)
   3074 		    isp->isp_nactive--;
   3075 		XS_RESID(xs) = XS_XFRLEN(xs);
   3076 		XS_SETERR(xs, HBA_BUSRESET);
   3077 		XS_CMD_DONE(xs);
   3078 	}
   3079 }
   3080 
   3081 /*
   3082  * Miscellaneous debug statements.
   3083  */
   3084 static void
   3085 isp_prtstst(sp)
   3086 	ispstatusreq_t *sp;
   3087 {
   3088 	PRINTF("states->");
   3089 	if (sp->req_state_flags & RQSF_GOT_BUS)
   3090 		PRINTF("GOT_BUS ");
   3091 	if (sp->req_state_flags & RQSF_GOT_TARGET)
   3092 		PRINTF("GOT_TGT ");
   3093 	if (sp->req_state_flags & RQSF_SENT_CDB)
   3094 		PRINTF("SENT_CDB ");
   3095 	if (sp->req_state_flags & RQSF_XFRD_DATA)
   3096 		PRINTF("XFRD_DATA ");
   3097 	if (sp->req_state_flags & RQSF_GOT_STATUS)
   3098 		PRINTF("GOT_STS ");
   3099 	if (sp->req_state_flags & RQSF_GOT_SENSE)
   3100 		PRINTF("GOT_SNS ");
   3101 	if (sp->req_state_flags & RQSF_XFER_COMPLETE)
   3102 		PRINTF("XFR_CMPLT ");
   3103 	PRINTF("\n");
   3104 	PRINTF("status->");
   3105 	if (sp->req_status_flags & RQSTF_DISCONNECT)
   3106 		PRINTF("Disconnect ");
   3107 	if (sp->req_status_flags & RQSTF_SYNCHRONOUS)
   3108 		PRINTF("Sync_xfr ");
   3109 	if (sp->req_status_flags & RQSTF_PARITY_ERROR)
   3110 		PRINTF("Parity ");
   3111 	if (sp->req_status_flags & RQSTF_BUS_RESET)
   3112 		PRINTF("Bus_Reset ");
   3113 	if (sp->req_status_flags & RQSTF_DEVICE_RESET)
   3114 		PRINTF("Device_Reset ");
   3115 	if (sp->req_status_flags & RQSTF_ABORTED)
   3116 		PRINTF("Aborted ");
   3117 	if (sp->req_status_flags & RQSTF_TIMEOUT)
   3118 		PRINTF("Timeout ");
   3119 	if (sp->req_status_flags & RQSTF_NEGOTIATION)
   3120 		PRINTF("Negotiation ");
   3121 	PRINTF("\n");
   3122 }
   3123 
   3124 static char *
   3125 isp2100_fw_statename(state)
   3126 	int state;
   3127 {
   3128 	switch(state) {
   3129 	case FW_CONFIG_WAIT:	return "Config Wait";
   3130 	case FW_WAIT_AL_PA:	return "Waiting for AL/PA";
   3131 	case FW_WAIT_LOGIN:	return "Wait Login";
   3132 	case FW_READY:		return "Ready";
   3133 	case FW_LOSS_OF_SYNC:	return "Loss Of Sync";
   3134 	case FW_ERROR:		return "Error";
   3135 	case FW_REINIT:		return "Re-Init";
   3136 	case FW_NON_PART:	return "Nonparticipating";
   3137 	default:		return "eh?";
   3138 	}
   3139 }
   3140 
   3141 /*
   3142  * NVRAM Routines
   3143  */
   3144 
   3145 static int
   3146 isp_read_nvram(isp)
   3147 	struct ispsoftc *isp;
   3148 {
   3149 	int i, amt;
   3150 	u_int8_t csum, minversion;
   3151 	union {
   3152 		u_int8_t _x[ISP2100_NVRAM_SIZE];
   3153 		u_int16_t _s[ISP2100_NVRAM_SIZE>>1];
   3154 	} _n;
   3155 #define	nvram_data	_n._x
   3156 #define	nvram_words	_n._s
   3157 
   3158 	if (isp->isp_type & ISP_HA_FC) {
   3159 		amt = ISP2100_NVRAM_SIZE;
   3160 		minversion = 1;
   3161 	} else {
   3162 		amt = ISP_NVRAM_SIZE;
   3163 		minversion = 2;
   3164 	}
   3165 
   3166 	/*
   3167 	 * Just read the first two words first to see if we have a valid
   3168 	 * NVRAM to continue reading the rest with.
   3169 	 */
   3170 	for (i = 0; i < 2; i++) {
   3171 		isp_rdnvram_word(isp, i, &nvram_words[i]);
   3172 	}
   3173 	if (nvram_data[0] != 'I' || nvram_data[1] != 'S' ||
   3174 	    nvram_data[2] != 'P') {
   3175 		if (isp->isp_bustype != ISP_BT_SBUS) {
   3176 			PRINTF("%s: invalid NVRAM header\n", isp->isp_name);
   3177 		}
   3178 		return (-1);
   3179 	}
   3180 	for (i = 2; i < amt>>1; i++) {
   3181 		isp_rdnvram_word(isp, i, &nvram_words[i]);
   3182 	}
   3183 	for (csum = 0, i = 0; i < amt; i++) {
   3184 		csum += nvram_data[i];
   3185 	}
   3186 	if (csum != 0) {
   3187 		PRINTF("%s: invalid NVRAM checksum\n", isp->isp_name);
   3188 		return (-1);
   3189 	}
   3190 	if (ISP_NVRAM_VERSION(nvram_data) < minversion) {
   3191 		PRINTF("%s: version %d NVRAM not understood\n", isp->isp_name,
   3192 		    ISP_NVRAM_VERSION(nvram_data));
   3193 		return (-1);
   3194 	}
   3195 
   3196 	if (isp->isp_type & ISP_HA_SCSI) {
   3197 		sdparam *sdp = (sdparam *) isp->isp_param;
   3198 
   3199 		/* XXX CHECK THIS FOR SANITY XXX */
   3200 		sdp->isp_fifo_threshold =
   3201 			ISP_NVRAM_FIFO_THRESHOLD(nvram_data);
   3202 
   3203 		sdp->isp_initiator_id =
   3204 			ISP_NVRAM_INITIATOR_ID(nvram_data);
   3205 
   3206 		sdp->isp_bus_reset_delay =
   3207 			ISP_NVRAM_BUS_RESET_DELAY(nvram_data);
   3208 
   3209 		sdp->isp_retry_count =
   3210 			ISP_NVRAM_BUS_RETRY_COUNT(nvram_data);
   3211 
   3212 		sdp->isp_retry_delay =
   3213 			ISP_NVRAM_BUS_RETRY_DELAY(nvram_data);
   3214 
   3215 		sdp->isp_async_data_setup =
   3216 			ISP_NVRAM_ASYNC_DATA_SETUP_TIME(nvram_data);
   3217 
   3218 		if (isp->isp_type >= ISP_HA_SCSI_1040) {
   3219 			if (sdp->isp_async_data_setup < 9) {
   3220 				sdp->isp_async_data_setup = 9;
   3221 			}
   3222 		} else {
   3223 			if (sdp->isp_async_data_setup != 6) {
   3224 				sdp->isp_async_data_setup = 6;
   3225 			}
   3226 		}
   3227 
   3228 		sdp->isp_req_ack_active_neg =
   3229 			ISP_NVRAM_REQ_ACK_ACTIVE_NEGATION(nvram_data);
   3230 
   3231 		sdp->isp_data_line_active_neg =
   3232 			ISP_NVRAM_DATA_LINE_ACTIVE_NEGATION(nvram_data);
   3233 
   3234 		sdp->isp_data_dma_burst_enabl =
   3235 			ISP_NVRAM_DATA_DMA_BURST_ENABLE(nvram_data);
   3236 
   3237 		sdp->isp_cmd_dma_burst_enable =
   3238 			ISP_NVRAM_CMD_DMA_BURST_ENABLE(nvram_data);
   3239 
   3240 		sdp->isp_tag_aging =
   3241 			ISP_NVRAM_TAG_AGE_LIMIT(nvram_data);
   3242 
   3243 		/* XXX ISP_NVRAM_FIFO_THRESHOLD_128 XXX */
   3244 
   3245 		sdp->isp_selection_timeout =
   3246 			ISP_NVRAM_SELECTION_TIMEOUT(nvram_data);
   3247 
   3248 		sdp->isp_max_queue_depth =
   3249 			ISP_NVRAM_MAX_QUEUE_DEPTH(nvram_data);
   3250 
   3251 		sdp->isp_fast_mttr = ISP_NVRAM_FAST_MTTR_ENABLE(nvram_data);
   3252 
   3253 		for (i = 0; i < 16; i++) {
   3254 			sdp->isp_devparam[i].dev_enable =
   3255 				ISP_NVRAM_TGT_DEVICE_ENABLE(nvram_data, i);
   3256 			sdp->isp_devparam[i].exc_throttle =
   3257 				ISP_NVRAM_TGT_EXEC_THROTTLE(nvram_data, i);
   3258 			sdp->isp_devparam[i].sync_offset =
   3259 				ISP_NVRAM_TGT_SYNC_OFFSET(nvram_data, i);
   3260 			sdp->isp_devparam[i].sync_period =
   3261 				ISP_NVRAM_TGT_SYNC_PERIOD(nvram_data, i);
   3262 
   3263 			if (isp->isp_type < ISP_HA_SCSI_1040) {
   3264 				/*
   3265 				 * If we're not ultra, we can't possibly
   3266 				 * be a shorter period than this.
   3267 				 */
   3268 				if (sdp->isp_devparam[i].sync_period < 0x19) {
   3269 					sdp->isp_devparam[i].sync_period =
   3270 					    0x19;
   3271 				}
   3272 				if (sdp->isp_devparam[i].sync_offset > 0xc) {
   3273 					sdp->isp_devparam[i].sync_offset =
   3274 					    0x0c;
   3275 				}
   3276 			} else {
   3277 				if (sdp->isp_devparam[i].sync_offset > 0x8) {
   3278 					sdp->isp_devparam[i].sync_offset = 0x8;
   3279 				}
   3280 			}
   3281 
   3282 			sdp->isp_devparam[i].dev_flags = 0;
   3283 
   3284 			if (ISP_NVRAM_TGT_RENEG(nvram_data, i))
   3285 				sdp->isp_devparam[i].dev_flags |= DPARM_RENEG;
   3286 			if (ISP_NVRAM_TGT_QFRZ(nvram_data, i)) {
   3287 				PRINTF("%s: not supporting QFRZ option for "
   3288 				    "target %d\n", isp->isp_name, i);
   3289 			}
   3290 			sdp->isp_devparam[i].dev_flags |= DPARM_ARQ;
   3291 			if (ISP_NVRAM_TGT_ARQ(nvram_data, i) == 0) {
   3292 				PRINTF("%s: not disabling ARQ option for "
   3293 				    "target %d\n", isp->isp_name, i);
   3294 			}
   3295 			if (ISP_NVRAM_TGT_TQING(nvram_data, i))
   3296 				sdp->isp_devparam[i].dev_flags |= DPARM_TQING;
   3297 			if (ISP_NVRAM_TGT_SYNC(nvram_data, i))
   3298 				sdp->isp_devparam[i].dev_flags |= DPARM_SYNC;
   3299 			if (ISP_NVRAM_TGT_WIDE(nvram_data, i))
   3300 				sdp->isp_devparam[i].dev_flags |= DPARM_WIDE;
   3301 			if (ISP_NVRAM_TGT_PARITY(nvram_data, i))
   3302 				sdp->isp_devparam[i].dev_flags |= DPARM_PARITY;
   3303 			if (ISP_NVRAM_TGT_DISC(nvram_data, i))
   3304 				sdp->isp_devparam[i].dev_flags |= DPARM_DISC;
   3305 		}
   3306 	} else {
   3307 		fcparam *fcp = (fcparam *) isp->isp_param;
   3308 		union {
   3309 			struct {
   3310 #if	BYTE_ORDER == BIG_ENDIAN
   3311 				u_int32_t hi32;
   3312 				u_int32_t lo32;
   3313 #else
   3314 				u_int32_t lo32;
   3315 				u_int32_t hi32;
   3316 #endif
   3317 			} wds;
   3318 			u_int64_t full64;
   3319 		} wwnstore;
   3320 
   3321 		wwnstore.full64 = ISP2100_NVRAM_NODE_NAME(nvram_data);
   3322 		PRINTF("%s: Adapter WWN 0x%08x%08x\n", isp->isp_name,
   3323 		    wwnstore.wds.hi32, wwnstore.wds.lo32);
   3324 		fcp->isp_wwn = wwnstore.full64;
   3325 		wwnstore.full64 = ISP2100_NVRAM_BOOT_NODE_NAME(nvram_data);
   3326 		if (wwnstore.full64 != 0) {
   3327 			PRINTF("%s: BOOT DEVICE WWN 0x%08x%08x\n",
   3328 			    isp->isp_name, wwnstore.wds.hi32,
   3329 			    wwnstore.wds.lo32);
   3330 		}
   3331 		fcp->isp_maxalloc =
   3332 			ISP2100_NVRAM_MAXIOCBALLOCATION(nvram_data);
   3333 		fcp->isp_maxfrmlen =
   3334 			ISP2100_NVRAM_MAXFRAMELENGTH(nvram_data);
   3335 		fcp->isp_retry_delay =
   3336 			ISP2100_NVRAM_RETRY_DELAY(nvram_data);
   3337 		fcp->isp_retry_count =
   3338 			ISP2100_NVRAM_RETRY_COUNT(nvram_data);
   3339 		fcp->isp_loopid =
   3340 			ISP2100_NVRAM_HARDLOOPID(nvram_data);
   3341 		fcp->isp_execthrottle =
   3342 			ISP2100_NVRAM_EXECUTION_THROTTLE(nvram_data);
   3343 	}
   3344 	return (0);
   3345 }
   3346 
   3347 static void
   3348 isp_rdnvram_word(isp, wo, rp)
   3349 	struct ispsoftc *isp;
   3350 	int wo;
   3351 	u_int16_t *rp;
   3352 {
   3353 	int i, cbits;
   3354 	u_int16_t bit, rqst;
   3355 
   3356 	ISP_WRITE(isp, BIU_NVRAM, BIU_NVRAM_SELECT);
   3357 	SYS_DELAY(2);
   3358 	ISP_WRITE(isp, BIU_NVRAM, BIU_NVRAM_SELECT|BIU_NVRAM_CLOCK);
   3359 	SYS_DELAY(2);
   3360 
   3361 	if (isp->isp_type & ISP_HA_FC) {
   3362 		wo &= ((ISP2100_NVRAM_SIZE >> 1) - 1);
   3363 		rqst = (ISP_NVRAM_READ << 8) | wo;
   3364 		cbits = 10;
   3365 	} else {
   3366 		wo &= ((ISP_NVRAM_SIZE >> 1) - 1);
   3367 		rqst = (ISP_NVRAM_READ << 6) | wo;
   3368 		cbits = 8;
   3369 	}
   3370 
   3371 	/*
   3372 	 * Clock the word select request out...
   3373 	 */
   3374 	for (i = cbits; i >= 0; i--) {
   3375 		if ((rqst >> i) & 1) {
   3376 			bit = BIU_NVRAM_SELECT | BIU_NVRAM_DATAOUT;
   3377 		} else {
   3378 			bit = BIU_NVRAM_SELECT;
   3379 		}
   3380 		ISP_WRITE(isp, BIU_NVRAM, bit);
   3381 		SYS_DELAY(2);
   3382 		ISP_WRITE(isp, BIU_NVRAM, bit | BIU_NVRAM_CLOCK);
   3383 		SYS_DELAY(2);
   3384 		ISP_WRITE(isp, BIU_NVRAM, bit);
   3385 		SYS_DELAY(2);
   3386 	}
   3387 	/*
   3388 	 * Now read the result back in (bits come back in MSB format).
   3389 	 */
   3390 	*rp = 0;
   3391 	for (i = 0; i < 16; i++) {
   3392 		u_int16_t rv;
   3393 		*rp <<= 1;
   3394 		ISP_WRITE(isp, BIU_NVRAM, BIU_NVRAM_SELECT|BIU_NVRAM_CLOCK);
   3395 		SYS_DELAY(2);
   3396 		rv = ISP_READ(isp, BIU_NVRAM);
   3397 		if (rv & BIU_NVRAM_DATAIN) {
   3398 			*rp |= 1;
   3399 		}
   3400 		SYS_DELAY(2);
   3401 		ISP_WRITE(isp, BIU_NVRAM, BIU_NVRAM_SELECT);
   3402 		SYS_DELAY(2);
   3403 	}
   3404 	ISP_WRITE(isp, BIU_NVRAM, 0);
   3405 	SYS_DELAY(2);
   3406 #if	BYTE_ORDER == BIG_ENDIAN
   3407 	*rp = ((*rp >> 8) | ((*rp & 0xff) << 8));
   3408 #endif
   3409 }
   3410