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isp_pci.c revision 1.75
      1 /* $NetBSD: isp_pci.c,v 1.75 2001/12/14 00:13:47 mjacob Exp $ */
      2 /*
      3  * This driver, which is contained in NetBSD in the files:
      4  *
      5  *	sys/dev/ic/isp.c
      6  *	sys/dev/ic/isp_inline.h
      7  *	sys/dev/ic/isp_netbsd.c
      8  *	sys/dev/ic/isp_netbsd.h
      9  *	sys/dev/ic/isp_target.c
     10  *	sys/dev/ic/isp_target.h
     11  *	sys/dev/ic/isp_tpublic.h
     12  *	sys/dev/ic/ispmbox.h
     13  *	sys/dev/ic/ispreg.h
     14  *	sys/dev/ic/ispvar.h
     15  *	sys/microcode/isp/asm_sbus.h
     16  *	sys/microcode/isp/asm_1040.h
     17  *	sys/microcode/isp/asm_1080.h
     18  *	sys/microcode/isp/asm_12160.h
     19  *	sys/microcode/isp/asm_2100.h
     20  *	sys/microcode/isp/asm_2200.h
     21  *	sys/pci/isp_pci.c
     22  *	sys/sbus/isp_sbus.c
     23  *
     24  * Is being actively maintained by Matthew Jacob (mjacob (at) netbsd.org).
     25  * This driver also is shared source with FreeBSD, OpenBSD, Linux, Solaris,
     26  * Linux versions. This tends to be an interesting maintenance problem.
     27  *
     28  * Please coordinate with Matthew Jacob on changes you wish to make here.
     29  */
     30 /*
     31  * PCI specific probe and attach routines for Qlogic ISP SCSI adapters.
     32  */
     33 /*
     34  * Copyright (C) 1997, 1998, 1999 National Aeronautics & Space Administration
     35  * All rights reserved.
     36  *
     37  * Additional Copyright (C) 2000, 2001 by Matthew Jacob
     38  *
     39  * Redistribution and use in source and binary forms, with or without
     40  * modification, are permitted provided that the following conditions
     41  * are met:
     42  * 1. Redistributions of source code must retain the above copyright
     43  *    notice, this list of conditions and the following disclaimer.
     44  * 2. The name of the author may not be used to endorse or promote products
     45  *    derived from this software without specific prior written permission
     46  *
     47  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     48  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     49  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     50  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     51  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     52  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     53  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     54  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     55  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     56  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     57  */
     58 
     59 #include <sys/cdefs.h>
     60 __KERNEL_RCSID(0, "$NetBSD: isp_pci.c,v 1.75 2001/12/14 00:13:47 mjacob Exp $");
     61 
     62 #include <dev/ic/isp_netbsd.h>
     63 #include <dev/pci/pcireg.h>
     64 #include <dev/pci/pcivar.h>
     65 #include <dev/pci/pcidevs.h>
     66 #include <uvm/uvm_extern.h>
     67 #include <sys/reboot.h>
     68 
     69 static u_int16_t isp_pci_rd_reg(struct ispsoftc *, int);
     70 static void isp_pci_wr_reg(struct ispsoftc *, int, u_int16_t);
     71 #if !(defined(ISP_DISABLE_1080_SUPPORT) && defined(ISP_DISABLE_12160_SUPPORT))
     72 static u_int16_t isp_pci_rd_reg_1080(struct ispsoftc *, int);
     73 static void isp_pci_wr_reg_1080(struct ispsoftc *, int, u_int16_t);
     74 #endif
     75 static int
     76 isp_pci_rd_isr(struct ispsoftc *, u_int16_t *, u_int16_t *, u_int16_t *);
     77 static int
     78 isp_pci_rd_isr_2300(struct ispsoftc *, u_int16_t *, u_int16_t *, u_int16_t *);
     79 static int isp_pci_mbxdma(struct ispsoftc *);
     80 static int isp_pci_dmasetup(struct ispsoftc *, XS_T *, ispreq_t *,
     81     u_int16_t *, u_int16_t);
     82 static void isp_pci_dmateardown(struct ispsoftc *, XS_T *, u_int16_t);
     83 static void isp_pci_reset1(struct ispsoftc *);
     84 static void isp_pci_dumpregs(struct ispsoftc *, const char *);
     85 static int isp_pci_intr(void *);
     86 
     87 #if	defined(ISP_DISABLE_1020_SUPPORT)
     88 #define	ISP_1040_RISC_CODE	NULL
     89 #else
     90 #define	ISP_1040_RISC_CODE	isp_1040_risc_code
     91 #include <dev/microcode/isp/asm_1040.h>
     92 #endif
     93 
     94 #if	defined(ISP_DISABLE_1080_SUPPORT)
     95 #define	ISP_1080_RISC_CODE	NULL
     96 #else
     97 #define	ISP_1080_RISC_CODE	isp_1080_risc_code
     98 #include <dev/microcode/isp/asm_1080.h>
     99 #endif
    100 
    101 #if	defined(ISP_DISABLE_12160_SUPPORT)
    102 #define	ISP_12160_RISC_CODE	NULL
    103 #else
    104 #define	ISP_12160_RISC_CODE	isp_12160_risc_code
    105 #include <dev/microcode/isp/asm_12160.h>
    106 #endif
    107 
    108 #if	defined(ISP_DISABLE_2100_SUPPORT)
    109 #define	ISP_2100_RISC_CODE	NULL
    110 #else
    111 #define	ISP_2100_RISC_CODE	isp_2100_risc_code
    112 #include <dev/microcode/isp/asm_2100.h>
    113 #endif
    114 
    115 #if	defined(ISP_DISABLE_2200_SUPPORT)
    116 #define	ISP_2200_RISC_CODE	NULL
    117 #else
    118 #define	ISP_2200_RISC_CODE	isp_2200_risc_code
    119 #include <dev/microcode/isp/asm_2200.h>
    120 #endif
    121 
    122 #if	defined(ISP_DISABLE_2300_SUPPORT)
    123 #define	ISP_2300_RISC_CODE	NULL
    124 #else
    125 #define	ISP_2300_RISC_CODE	isp_2300_risc_code
    126 #include <dev/microcode/isp/asm_2300.h>
    127 #endif
    128 
    129 #ifndef	ISP_DISABLE_1020_SUPPORT
    130 static struct ispmdvec mdvec = {
    131 	isp_pci_rd_isr,
    132 	isp_pci_rd_reg,
    133 	isp_pci_wr_reg,
    134 	isp_pci_mbxdma,
    135 	isp_pci_dmasetup,
    136 	isp_pci_dmateardown,
    137 	NULL,
    138 	isp_pci_reset1,
    139 	isp_pci_dumpregs,
    140 	ISP_1040_RISC_CODE,
    141 	BIU_BURST_ENABLE|BIU_PCI_CONF1_FIFO_64
    142 };
    143 #endif
    144 
    145 #ifndef	ISP_DISABLE_1080_SUPPORT
    146 static struct ispmdvec mdvec_1080 = {
    147 	isp_pci_rd_isr,
    148 	isp_pci_rd_reg_1080,
    149 	isp_pci_wr_reg_1080,
    150 	isp_pci_mbxdma,
    151 	isp_pci_dmasetup,
    152 	isp_pci_dmateardown,
    153 	NULL,
    154 	isp_pci_reset1,
    155 	isp_pci_dumpregs,
    156 	ISP_1080_RISC_CODE,
    157 	BIU_BURST_ENABLE|BIU_PCI_CONF1_FIFO_64
    158 };
    159 #endif
    160 
    161 #ifndef	ISP_DISABLE_12160_SUPPORT
    162 static struct ispmdvec mdvec_12160 = {
    163 	isp_pci_rd_isr,
    164 	isp_pci_rd_reg_1080,
    165 	isp_pci_wr_reg_1080,
    166 	isp_pci_mbxdma,
    167 	isp_pci_dmasetup,
    168 	isp_pci_dmateardown,
    169 	NULL,
    170 	isp_pci_reset1,
    171 	isp_pci_dumpregs,
    172 	ISP_12160_RISC_CODE,
    173 	BIU_BURST_ENABLE|BIU_PCI_CONF1_FIFO_64
    174 };
    175 #endif
    176 
    177 #ifndef	ISP_DISABLE_2100_SUPPORT
    178 static struct ispmdvec mdvec_2100 = {
    179 	isp_pci_rd_isr,
    180 	isp_pci_rd_reg,
    181 	isp_pci_wr_reg,
    182 	isp_pci_mbxdma,
    183 	isp_pci_dmasetup,
    184 	isp_pci_dmateardown,
    185 	NULL,
    186 	isp_pci_reset1,
    187 	isp_pci_dumpregs,
    188 	ISP_2100_RISC_CODE
    189 };
    190 #endif
    191 
    192 #ifndef	ISP_DISABLE_2200_SUPPORT
    193 static struct ispmdvec mdvec_2200 = {
    194 	isp_pci_rd_isr,
    195 	isp_pci_rd_reg,
    196 	isp_pci_wr_reg,
    197 	isp_pci_mbxdma,
    198 	isp_pci_dmasetup,
    199 	isp_pci_dmateardown,
    200 	NULL,
    201 	isp_pci_reset1,
    202 	isp_pci_dumpregs,
    203 	ISP_2200_RISC_CODE
    204 };
    205 #endif
    206 
    207 #ifndef	ISP_DISABLE_2300_SUPPORT
    208 static struct ispmdvec mdvec_2300 = {
    209 	isp_pci_rd_isr_2300,
    210 	isp_pci_rd_reg,
    211 	isp_pci_wr_reg,
    212 	isp_pci_mbxdma,
    213 	isp_pci_dmasetup,
    214 	isp_pci_dmateardown,
    215 	NULL,
    216 	isp_pci_reset1,
    217 	isp_pci_dumpregs,
    218 	ISP_2300_RISC_CODE
    219 };
    220 #endif
    221 
    222 #ifndef	PCI_VENDOR_QLOGIC
    223 #define	PCI_VENDOR_QLOGIC	0x1077
    224 #endif
    225 
    226 #ifndef	PCI_PRODUCT_QLOGIC_ISP1020
    227 #define	PCI_PRODUCT_QLOGIC_ISP1020	0x1020
    228 #endif
    229 
    230 #ifndef	PCI_PRODUCT_QLOGIC_ISP1080
    231 #define	PCI_PRODUCT_QLOGIC_ISP1080	0x1080
    232 #endif
    233 
    234 #ifndef	PCI_PRODUCT_QLOGIC_ISP1240
    235 #define	PCI_PRODUCT_QLOGIC_ISP1240	0x1240
    236 #endif
    237 
    238 #ifndef	PCI_PRODUCT_QLOGIC_ISP1280
    239 #define	PCI_PRODUCT_QLOGIC_ISP1280	0x1280
    240 #endif
    241 
    242 #ifndef	PCI_PRODUCT_QLOGIC_ISP12160
    243 #define	PCI_PRODUCT_QLOGIC_ISP12160	0x1216
    244 #endif
    245 
    246 #ifndef	PCI_PRODUCT_QLOGIC_ISP2100
    247 #define	PCI_PRODUCT_QLOGIC_ISP2100	0x2100
    248 #endif
    249 
    250 #ifndef	PCI_PRODUCT_QLOGIC_ISP2200
    251 #define	PCI_PRODUCT_QLOGIC_ISP2200	0x2200
    252 #endif
    253 
    254 #ifndef	PCI_PRODUCT_QLOGIC_ISP2300
    255 #define	PCI_PRODUCT_QLOGIC_ISP2300	0x2300
    256 #endif
    257 
    258 #ifndef	PCI_PRODUCT_QLOGIC_ISP2312
    259 #define	PCI_PRODUCT_QLOGIC_ISP2312	0x2312
    260 #endif
    261 
    262 #define	PCI_QLOGIC_ISP	((PCI_PRODUCT_QLOGIC_ISP1020 << 16) | PCI_VENDOR_QLOGIC)
    263 
    264 #define	PCI_QLOGIC_ISP1080	\
    265 	((PCI_PRODUCT_QLOGIC_ISP1080 << 16) | PCI_VENDOR_QLOGIC)
    266 
    267 #define	PCI_QLOGIC_ISP1240	\
    268 	((PCI_PRODUCT_QLOGIC_ISP1240 << 16) | PCI_VENDOR_QLOGIC)
    269 
    270 #define	PCI_QLOGIC_ISP1280	\
    271 	((PCI_PRODUCT_QLOGIC_ISP1280 << 16) | PCI_VENDOR_QLOGIC)
    272 
    273 #define	PCI_QLOGIC_ISP12160	\
    274 	((PCI_PRODUCT_QLOGIC_ISP12160 << 16) | PCI_VENDOR_QLOGIC)
    275 
    276 #define	PCI_QLOGIC_ISP2100	\
    277 	((PCI_PRODUCT_QLOGIC_ISP2100 << 16) | PCI_VENDOR_QLOGIC)
    278 
    279 #define	PCI_QLOGIC_ISP2200	\
    280 	((PCI_PRODUCT_QLOGIC_ISP2200 << 16) | PCI_VENDOR_QLOGIC)
    281 
    282 #define	PCI_QLOGIC_ISP2300	\
    283 	((PCI_PRODUCT_QLOGIC_ISP2300 << 16) | PCI_VENDOR_QLOGIC)
    284 
    285 #define	PCI_QLOGIC_ISP2312	\
    286 	((PCI_PRODUCT_QLOGIC_ISP2312 << 16) | PCI_VENDOR_QLOGIC)
    287 
    288 #define	IO_MAP_REG	0x10
    289 #define	MEM_MAP_REG	0x14
    290 #define	PCIR_ROMADDR	0x30
    291 
    292 #define	PCI_DFLT_LTNCY	0x40
    293 #define	PCI_DFLT_LNSZ	0x10
    294 
    295 
    296 static int isp_pci_probe(struct device *, struct cfdata *, void *);
    297 static void isp_pci_attach(struct device *, struct device *, void *);
    298 
    299 struct isp_pcisoftc {
    300 	struct ispsoftc		pci_isp;
    301 	pci_chipset_tag_t	pci_pc;
    302 	pcitag_t		pci_tag;
    303 	bus_space_tag_t		pci_st;
    304 	bus_space_handle_t	pci_sh;
    305 	bus_dmamap_t		*pci_xfer_dmap;
    306 	void *			pci_ih;
    307 	int16_t			pci_poff[_NREG_BLKS];
    308 };
    309 
    310 struct cfattach isp_pci_ca = {
    311 	sizeof (struct isp_pcisoftc), isp_pci_probe, isp_pci_attach
    312 };
    313 
    314 #ifdef	DEBUG
    315 const char vstring[] =
    316     "Qlogic ISP Driver, NetBSD (pci) Platform Version %d.%d Core Version %d.%d";
    317 #endif
    318 
    319 static int
    320 isp_pci_probe(struct device *parent, struct cfdata *match, void *aux)
    321 {
    322 	struct pci_attach_args *pa = aux;
    323 	switch (pa->pa_id) {
    324 #ifndef	ISP_DISABLE_1020_SUPPORT
    325 	case PCI_QLOGIC_ISP:
    326 		return (1);
    327 #endif
    328 #ifndef	ISP_DISABLE_1080_SUPPORT
    329 	case PCI_QLOGIC_ISP1080:
    330 	case PCI_QLOGIC_ISP1240:
    331 	case PCI_QLOGIC_ISP1280:
    332 		return (1);
    333 #endif
    334 #ifndef	ISP_DISABLE_12160_SUPPORT
    335 	case PCI_QLOGIC_ISP12160:
    336 		return (1);
    337 #endif
    338 #ifndef	ISP_DISABLE_2100_SUPPORT
    339 	case PCI_QLOGIC_ISP2100:
    340 		return (1);
    341 #endif
    342 #ifndef	ISP_DISABLE_2200_SUPPORT
    343 	case PCI_QLOGIC_ISP2200:
    344 		return (1);
    345 #endif
    346 #ifndef	ISP_DISABLE_2300_SUPPORT
    347 	case PCI_QLOGIC_ISP2300:
    348 	case PCI_QLOGIC_ISP2312:
    349 		return (1);
    350 #endif
    351 	default:
    352 		return (0);
    353 	}
    354 }
    355 
    356 
    357 static void
    358 isp_pci_attach(struct device *parent, struct device *self, void *aux)
    359 {
    360 #ifdef	DEBUG
    361 	static char oneshot = 1;
    362 #endif
    363 	static const char nomem[] = "%s: no mem for sdparam table\n";
    364 	u_int32_t data, rev, linesz = PCI_DFLT_LNSZ;
    365 	struct pci_attach_args *pa = aux;
    366 	struct isp_pcisoftc *pcs = (struct isp_pcisoftc *) self;
    367 	struct ispsoftc *isp = &pcs->pci_isp;
    368 	bus_space_tag_t st, iot, memt;
    369 	bus_space_handle_t sh, ioh, memh;
    370 	pci_intr_handle_t ih;
    371 	const char *intrstr;
    372 	int ioh_valid, memh_valid;
    373 
    374 	ioh_valid = (pci_mapreg_map(pa, IO_MAP_REG,
    375 	    PCI_MAPREG_TYPE_IO, 0,
    376 	    &iot, &ioh, NULL, NULL) == 0);
    377 	memh_valid = (pci_mapreg_map(pa, MEM_MAP_REG,
    378 	    PCI_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_32BIT, 0,
    379 	    &memt, &memh, NULL, NULL) == 0);
    380 	if (memh_valid) {
    381 		st = memt;
    382 		sh = memh;
    383 	} else if (ioh_valid) {
    384 		st = iot;
    385 		sh = ioh;
    386 	} else {
    387 		printf(": unable to map device registers\n");
    388 		return;
    389 	}
    390 	printf("\n");
    391 
    392 	pcs->pci_st = st;
    393 	pcs->pci_sh = sh;
    394 	pcs->pci_pc = pa->pa_pc;
    395 	pcs->pci_tag = pa->pa_tag;
    396 	pcs->pci_poff[BIU_BLOCK >> _BLK_REG_SHFT] = BIU_REGS_OFF;
    397 	pcs->pci_poff[MBOX_BLOCK >> _BLK_REG_SHFT] = PCI_MBOX_REGS_OFF;
    398 	pcs->pci_poff[SXP_BLOCK >> _BLK_REG_SHFT] = PCI_SXP_REGS_OFF;
    399 	pcs->pci_poff[RISC_BLOCK >> _BLK_REG_SHFT] = PCI_RISC_REGS_OFF;
    400 	pcs->pci_poff[DMA_BLOCK >> _BLK_REG_SHFT] = DMA_REGS_OFF;
    401 	rev = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_CLASS_REG) & 0xff;
    402 
    403 #ifndef	ISP_DISABLE_1020_SUPPORT
    404 	if (pa->pa_id == PCI_QLOGIC_ISP) {
    405 		isp->isp_mdvec = &mdvec;
    406 		isp->isp_type = ISP_HA_SCSI_UNKNOWN;
    407 		isp->isp_param = malloc(sizeof (sdparam), M_DEVBUF, M_NOWAIT);
    408 		if (isp->isp_param == NULL) {
    409 			printf(nomem, isp->isp_name);
    410 			return;
    411 		}
    412 		memset(isp->isp_param, 0, sizeof (sdparam));
    413 	}
    414 #endif
    415 #ifndef	ISP_DISABLE_1080_SUPPORT
    416 	if (pa->pa_id == PCI_QLOGIC_ISP1080) {
    417 		isp->isp_mdvec = &mdvec_1080;
    418 		isp->isp_type = ISP_HA_SCSI_1080;
    419 		isp->isp_param = malloc(sizeof (sdparam), M_DEVBUF, M_NOWAIT);
    420 		if (isp->isp_param == NULL) {
    421 			printf(nomem, isp->isp_name);
    422 			return;
    423 		}
    424 		memset(isp->isp_param, 0, sizeof (sdparam));
    425 		pcs->pci_poff[DMA_BLOCK >> _BLK_REG_SHFT] =
    426 		    ISP1080_DMA_REGS_OFF;
    427 	}
    428 	if (pa->pa_id == PCI_QLOGIC_ISP1240) {
    429 		isp->isp_mdvec = &mdvec_1080;
    430 		isp->isp_type = ISP_HA_SCSI_1240;
    431 		isp->isp_param =
    432 		    malloc(2 * sizeof (sdparam), M_DEVBUF, M_NOWAIT);
    433 		if (isp->isp_param == NULL) {
    434 			printf(nomem, isp->isp_name);
    435 			return;
    436 		}
    437 		memset(isp->isp_param, 0, 2 * sizeof (sdparam));
    438 		pcs->pci_poff[DMA_BLOCK >> _BLK_REG_SHFT] =
    439 		    ISP1080_DMA_REGS_OFF;
    440 	}
    441 	if (pa->pa_id == PCI_QLOGIC_ISP1280) {
    442 		isp->isp_mdvec = &mdvec_1080;
    443 		isp->isp_type = ISP_HA_SCSI_1280;
    444 		isp->isp_param =
    445 		    malloc(2 * sizeof (sdparam), M_DEVBUF, M_NOWAIT);
    446 		if (isp->isp_param == NULL) {
    447 			printf(nomem, isp->isp_name);
    448 			return;
    449 		}
    450 		memset(isp->isp_param, 0, 2 * sizeof (sdparam));
    451 		pcs->pci_poff[DMA_BLOCK >> _BLK_REG_SHFT] =
    452 		    ISP1080_DMA_REGS_OFF;
    453 	}
    454 #endif
    455 #ifndef	ISP_DISABLE_12160_SUPPORT
    456 	if (pa->pa_id == PCI_QLOGIC_ISP12160) {
    457 		isp->isp_mdvec = &mdvec_12160;
    458 		isp->isp_type = ISP_HA_SCSI_12160;
    459 		isp->isp_param =
    460 		    malloc(2 * sizeof (sdparam), M_DEVBUF, M_NOWAIT);
    461 		if (isp->isp_param == NULL) {
    462 			printf(nomem, isp->isp_name);
    463 			return;
    464 		}
    465 		memset(isp->isp_param, 0, 2 * sizeof (sdparam));
    466 		pcs->pci_poff[DMA_BLOCK >> _BLK_REG_SHFT] =
    467 		    ISP1080_DMA_REGS_OFF;
    468 	}
    469 #endif
    470 #ifndef	ISP_DISABLE_2100_SUPPORT
    471 	if (pa->pa_id == PCI_QLOGIC_ISP2100) {
    472 		isp->isp_mdvec = &mdvec_2100;
    473 		isp->isp_type = ISP_HA_FC_2100;
    474 		isp->isp_param = malloc(sizeof (fcparam), M_DEVBUF, M_NOWAIT);
    475 		if (isp->isp_param == NULL) {
    476 			printf(nomem, isp->isp_name);
    477 			return;
    478 		}
    479 		memset(isp->isp_param, 0, sizeof (fcparam));
    480 		pcs->pci_poff[MBOX_BLOCK >> _BLK_REG_SHFT] =
    481 		    PCI_MBOX_REGS2100_OFF;
    482 		if (rev < 3) {
    483 			/*
    484 			 * XXX: Need to get the actual revision
    485 			 * XXX: number of the 2100 FB. At any rate,
    486 			 * XXX: lower cache line size for early revision
    487 			 * XXX; boards.
    488 			 */
    489 			linesz = 1;
    490 		}
    491 	}
    492 #endif
    493 #ifndef	ISP_DISABLE_2200_SUPPORT
    494 	if (pa->pa_id == PCI_QLOGIC_ISP2200) {
    495 		isp->isp_mdvec = &mdvec_2200;
    496 		isp->isp_type = ISP_HA_FC_2200;
    497 		isp->isp_param = malloc(sizeof (fcparam), M_DEVBUF, M_NOWAIT);
    498 		if (isp->isp_param == NULL) {
    499 			printf(nomem, isp->isp_name);
    500 			return;
    501 		}
    502 		memset(isp->isp_param, 0, sizeof (fcparam));
    503 		pcs->pci_poff[MBOX_BLOCK >> _BLK_REG_SHFT] =
    504 		    PCI_MBOX_REGS2100_OFF;
    505 		data = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_CLASS_REG);
    506 	}
    507 #endif
    508 #ifndef	ISP_DISABLE_2300_SUPPORT
    509 	if (pa->pa_id == PCI_QLOGIC_ISP2300 ||
    510 	    pa->pa_id == PCI_QLOGIC_ISP2312) {
    511 		isp->isp_mdvec = &mdvec_2300;
    512 		isp->isp_type = ISP_HA_FC_2300;
    513 		isp->isp_param = malloc(sizeof (fcparam), M_DEVBUF, M_NOWAIT);
    514 		if (isp->isp_param == NULL) {
    515 			printf(nomem, isp->isp_name);
    516 			return;
    517 		}
    518 		memset(isp->isp_param, 0, sizeof (fcparam));
    519 		pcs->pci_poff[MBOX_BLOCK >> _BLK_REG_SHFT] =
    520 		    PCI_MBOX_REGS2300_OFF;
    521 		data = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_CLASS_REG);
    522 	}
    523 #endif
    524 	/*
    525 	 * Set up logging levels.
    526 	 */
    527 #ifdef	ISP_LOGDEFAULT
    528 	isp->isp_dblev = ISP_LOGDEFAULT;
    529 #else
    530 	isp->isp_dblev = ISP_LOGWARN|ISP_LOGERR;
    531 	if (bootverbose)
    532 		isp->isp_dblev |= ISP_LOGCONFIG|ISP_LOGINFO;
    533 #ifdef	SCSIDEBUG
    534 	isp->isp_dblev |= ISP_LOGDEBUG1|ISP_LOGDEBUG2;
    535 #endif
    536 #ifdef	DEBUG
    537 	isp->isp_dblev |= ISP_LOGDEBUG0;
    538 #endif
    539 #endif
    540 
    541 #ifdef	DEBUG
    542 	if (oneshot) {
    543 		oneshot = 0;
    544 		isp_prt(isp, ISP_LOGCONFIG, vstring,
    545 		    ISP_PLATFORM_VERSION_MAJOR, ISP_PLATFORM_VERSION_MINOR,
    546 		    ISP_CORE_VERSION_MAJOR, ISP_CORE_VERSION_MINOR);
    547 	}
    548 #endif
    549 
    550 	isp->isp_dmatag = pa->pa_dmat;
    551 	isp->isp_revision = rev;
    552 
    553 	/*
    554 	 * Make sure that command register set sanely.
    555 	 */
    556 	data = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG);
    557 	data |= PCI_COMMAND_MASTER_ENABLE | PCI_COMMAND_INVALIDATE_ENABLE;
    558 
    559 	/*
    560 	 * Not so sure about these- but I think it's important that they get
    561 	 * enabled......
    562 	 */
    563 	data |= PCI_COMMAND_PARITY_ENABLE | PCI_COMMAND_SERR_ENABLE;
    564 	pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, data);
    565 
    566 	/*
    567 	 * Make sure that the latency timer, cache line size,
    568 	 * and ROM is disabled.
    569 	 */
    570 	data = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_BHLC_REG);
    571 	data &= ~(PCI_LATTIMER_MASK << PCI_LATTIMER_SHIFT);
    572 	data &= ~(PCI_CACHELINE_MASK << PCI_CACHELINE_SHIFT);
    573 	data |= (PCI_DFLT_LTNCY	<< PCI_LATTIMER_SHIFT);
    574 	data |= (linesz << PCI_CACHELINE_SHIFT);
    575 	pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_BHLC_REG, data);
    576 
    577 	data = pci_conf_read(pa->pa_pc, pa->pa_tag, PCIR_ROMADDR);
    578 	data &= ~1;
    579 	pci_conf_write(pa->pa_pc, pa->pa_tag, PCIR_ROMADDR, data);
    580 
    581 	if (pci_intr_map(pa, &ih)) {
    582 		printf("%s: couldn't map interrupt\n", isp->isp_name);
    583 		free(isp->isp_param, M_DEVBUF);
    584 		return;
    585 	}
    586 	intrstr = pci_intr_string(pa->pa_pc, ih);
    587 	if (intrstr == NULL)
    588 		intrstr = "<I dunno>";
    589 	pcs->pci_ih = pci_intr_establish(pa->pa_pc, ih, IPL_BIO,
    590 	    isp_pci_intr, isp);
    591 	if (pcs->pci_ih == NULL) {
    592 		printf("%s: couldn't establish interrupt at %s\n",
    593 			isp->isp_name, intrstr);
    594 		free(isp->isp_param, M_DEVBUF);
    595 		return;
    596 	}
    597 
    598 	printf("%s: interrupting at %s\n", isp->isp_name, intrstr);
    599 
    600 	if (IS_FC(isp)) {
    601 		DEFAULT_NODEWWN(isp) = 0x400000007F000002;
    602 		DEFAULT_PORTWWN(isp) = 0x400000007F000002;
    603 	}
    604 
    605 	isp->isp_confopts = self->dv_cfdata->cf_flags;
    606 	isp->isp_role = ISP_DEFAULT_ROLES;
    607 	ISP_LOCK(isp);
    608 	isp->isp_osinfo.no_mbox_ints = 1;
    609 	isp_reset(isp);
    610 	if (isp->isp_state != ISP_RESETSTATE) {
    611 		ISP_UNLOCK(isp);
    612 		free(isp->isp_param, M_DEVBUF);
    613 		return;
    614 	}
    615 	ENABLE_INTS(isp);
    616 	isp_init(isp);
    617 	if (isp->isp_state != ISP_INITSTATE) {
    618 		isp_uninit(isp);
    619 		ISP_UNLOCK(isp);
    620 		free(isp->isp_param, M_DEVBUF);
    621 		return;
    622 	}
    623 	/*
    624 	 * Do platform attach.
    625 	 */
    626 	ISP_UNLOCK(isp);
    627 	isp_attach(isp);
    628 	if (isp->isp_state != ISP_RUNSTATE) {
    629 		ISP_LOCK(isp);
    630 		isp_uninit(isp);
    631 		free(isp->isp_param, M_DEVBUF);
    632 		ISP_UNLOCK(isp);
    633 	}
    634 }
    635 
    636 #define	IspVirt2Off(a, x)	\
    637 	(((struct isp_pcisoftc *)a)->pci_poff[((x) & _BLK_REG_MASK) >> \
    638 	_BLK_REG_SHFT] + ((x) & 0xff))
    639 
    640 #define	BXR2(pcs, off)		\
    641 	bus_space_read_2(pcs->pci_st, pcs->pci_sh, off)
    642 #define	BXW2(pcs, off, v)	\
    643 	bus_space_write_2(pcs->pci_st, pcs->pci_sh, off, v)
    644 
    645 
    646 static INLINE int
    647 isp_pci_rd_debounced(struct ispsoftc *isp, int off, u_int16_t *rp)
    648 {
    649 	struct isp_pcisoftc *pcs = (struct isp_pcisoftc *) isp;
    650 	u_int16_t val0, val1;
    651 	int i = 0;
    652 
    653 	do {
    654 		val0 = BXR2(pcs, IspVirt2Off(isp, off));
    655 		val1 = BXR2(pcs, IspVirt2Off(isp, off));
    656 	} while (val0 != val1 && ++i < 1000);
    657 	if (val0 != val1) {
    658 		return (1);
    659 	}
    660 	*rp = val0;
    661 	return (0);
    662 }
    663 
    664 static int
    665 isp_pci_rd_isr(struct ispsoftc *isp, u_int16_t *isrp,
    666     u_int16_t *semap, u_int16_t *mbp)
    667 {
    668 	struct isp_pcisoftc *pcs = (struct isp_pcisoftc *) isp;
    669 	u_int16_t isr, sema;
    670 
    671 	if (IS_2100(isp)) {
    672 		if (isp_pci_rd_debounced(isp, BIU_ISR, &isr)) {
    673 		    return (0);
    674 		}
    675 		if (isp_pci_rd_debounced(isp, BIU_SEMA, &sema)) {
    676 		    return (0);
    677 		}
    678 	} else {
    679 		isr = BXR2(pcs, IspVirt2Off(isp, BIU_ISR));
    680 		sema = BXR2(pcs, IspVirt2Off(isp, BIU_SEMA));
    681 	}
    682 	isp_prt(isp, ISP_LOGDEBUG3, "ISR 0x%x SEMA 0x%x", isr, sema);
    683 	isr &= INT_PENDING_MASK(isp);
    684 	sema &= BIU_SEMA_LOCK;
    685 	if (isr == 0 && sema == 0) {
    686 		return (0);
    687 	}
    688 	*isrp = isr;
    689 	if ((*semap = sema) != 0) {
    690 		if (IS_2100(isp)) {
    691 			if (isp_pci_rd_debounced(isp, OUTMAILBOX0, mbp)) {
    692 				return (0);
    693 			}
    694 		} else {
    695 			*mbp = BXR2(pcs, IspVirt2Off(isp, OUTMAILBOX0));
    696 		}
    697 	}
    698 	return (1);
    699 }
    700 
    701 #ifndef	ISP_DISABLE_2300_SUPPORT
    702 static int
    703 isp_pci_rd_isr_2300(struct ispsoftc *isp, u_int16_t *isrp,
    704     u_int16_t *semap, u_int16_t *mbox0p)
    705 {
    706 	struct isp_pcisoftc *pcs = (struct isp_pcisoftc *) isp;
    707 	u_int32_t r2hisr;
    708 
    709 	if (!(BXR2(pcs, IspVirt2Off(isp, BIU_ISR)) & BIU2100_ISR_RISC_INT)) {
    710 		*isrp = 0;
    711 		return (0);
    712 	}
    713 	r2hisr = bus_space_read_4(pcs->pci_st, pcs->pci_sh,
    714 	    IspVirt2Off(pcs, BIU_R2HSTSLO));
    715 	isp_prt(isp, ISP_LOGDEBUG3, "RISC2HOST ISR 0x%x", r2hisr);
    716 	if ((r2hisr & BIU_R2HST_INTR) == 0) {
    717 		*isrp = 0;
    718 		return (0);
    719 	}
    720 	switch (r2hisr & BIU_R2HST_ISTAT_MASK) {
    721 	case ISPR2HST_ROM_MBX_OK:
    722 	case ISPR2HST_ROM_MBX_FAIL:
    723 	case ISPR2HST_MBX_OK:
    724 	case ISPR2HST_MBX_FAIL:
    725 	case ISPR2HST_ASYNC_EVENT:
    726 	case ISPR2HST_FPOST:
    727 	case ISPR2HST_FPOST_CTIO:
    728 		*isrp = r2hisr & 0xffff;
    729 		*mbox0p = (r2hisr >> 16);
    730 		*semap = 1;
    731 		return (1);
    732 	case ISPR2HST_RSPQ_UPDATE:
    733 		*isrp = r2hisr & 0xffff;
    734 		*mbox0p = 0;
    735 		*semap = 0;
    736 		return (1);
    737 	default:
    738 		return (0);
    739 	}
    740 }
    741 #endif
    742 
    743 static u_int16_t
    744 isp_pci_rd_reg(struct ispsoftc *isp, int regoff)
    745 {
    746 	u_int16_t rv;
    747 	struct isp_pcisoftc *pcs = (struct isp_pcisoftc *) isp;
    748 	int oldconf = 0;
    749 
    750 	if ((regoff & _BLK_REG_MASK) == SXP_BLOCK) {
    751 		/*
    752 		 * We will assume that someone has paused the RISC processor.
    753 		 */
    754 		oldconf = BXR2(pcs, IspVirt2Off(isp, BIU_CONF1));
    755 		BXW2(pcs, IspVirt2Off(isp, BIU_CONF1),
    756 		    oldconf | BIU_PCI_CONF1_SXP);
    757 	}
    758 	rv = BXR2(pcs, IspVirt2Off(isp, regoff));
    759 	if ((regoff & _BLK_REG_MASK) == SXP_BLOCK) {
    760 		BXW2(pcs, IspVirt2Off(isp, BIU_CONF1), oldconf);
    761 	}
    762 	return (rv);
    763 }
    764 
    765 static void
    766 isp_pci_wr_reg(struct ispsoftc *isp, int regoff, u_int16_t val)
    767 {
    768 	struct isp_pcisoftc *pcs = (struct isp_pcisoftc *) isp;
    769 	int oldconf = 0;
    770 
    771 	if ((regoff & _BLK_REG_MASK) == SXP_BLOCK) {
    772 		/*
    773 		 * We will assume that someone has paused the RISC processor.
    774 		 */
    775 		oldconf = BXR2(pcs, IspVirt2Off(isp, BIU_CONF1));
    776 		BXW2(pcs, IspVirt2Off(isp, BIU_CONF1),
    777 		    oldconf | BIU_PCI_CONF1_SXP);
    778 	}
    779 	BXW2(pcs, IspVirt2Off(isp, regoff), val);
    780 	if ((regoff & _BLK_REG_MASK) == SXP_BLOCK) {
    781 		BXW2(pcs, IspVirt2Off(isp, BIU_CONF1), oldconf);
    782 	}
    783 }
    784 
    785 #if !(defined(ISP_DISABLE_1080_SUPPORT) && defined(ISP_DISABLE_12160_SUPPORT))
    786 static u_int16_t
    787 isp_pci_rd_reg_1080(struct ispsoftc *isp, int regoff)
    788 {
    789 	u_int16_t rv, oc = 0;
    790 	struct isp_pcisoftc *pcs = (struct isp_pcisoftc *) isp;
    791 
    792 	if ((regoff & _BLK_REG_MASK) == SXP_BLOCK ||
    793 	    (regoff & _BLK_REG_MASK) == (SXP_BLOCK|SXP_BANK1_SELECT)) {
    794 		u_int16_t tc;
    795 		/*
    796 		 * We will assume that someone has paused the RISC processor.
    797 		 */
    798 		oc = BXR2(pcs, IspVirt2Off(isp, BIU_CONF1));
    799 		tc = oc & ~BIU_PCI1080_CONF1_DMA;
    800 		if (regoff & SXP_BANK1_SELECT)
    801 			tc |= BIU_PCI1080_CONF1_SXP1;
    802 		else
    803 			tc |= BIU_PCI1080_CONF1_SXP0;
    804 		BXW2(pcs, IspVirt2Off(isp, BIU_CONF1), tc);
    805 	} else if ((regoff & _BLK_REG_MASK) == DMA_BLOCK) {
    806 		oc = BXR2(pcs, IspVirt2Off(isp, BIU_CONF1));
    807 		BXW2(pcs, IspVirt2Off(isp, BIU_CONF1),
    808 		    oc | BIU_PCI1080_CONF1_DMA);
    809 	}
    810 	rv = BXR2(pcs, IspVirt2Off(isp, regoff));
    811 	if (oc) {
    812 		BXW2(pcs, IspVirt2Off(isp, BIU_CONF1), oc);
    813 	}
    814 	return (rv);
    815 }
    816 
    817 static void
    818 isp_pci_wr_reg_1080(struct ispsoftc *isp, int regoff, u_int16_t val)
    819 {
    820 	struct isp_pcisoftc *pcs = (struct isp_pcisoftc *) isp;
    821 	int oc = 0;
    822 
    823 	if ((regoff & _BLK_REG_MASK) == SXP_BLOCK ||
    824 	    (regoff & _BLK_REG_MASK) == (SXP_BLOCK|SXP_BANK1_SELECT)) {
    825 		u_int16_t tc;
    826 		/*
    827 		 * We will assume that someone has paused the RISC processor.
    828 		 */
    829 		oc = BXR2(pcs, IspVirt2Off(isp, BIU_CONF1));
    830 		tc = oc & ~BIU_PCI1080_CONF1_DMA;
    831 		if (regoff & SXP_BANK1_SELECT)
    832 			tc |= BIU_PCI1080_CONF1_SXP1;
    833 		else
    834 			tc |= BIU_PCI1080_CONF1_SXP0;
    835 		BXW2(pcs, IspVirt2Off(isp, BIU_CONF1), tc);
    836 	} else if ((regoff & _BLK_REG_MASK) == DMA_BLOCK) {
    837 		oc = BXR2(pcs, IspVirt2Off(isp, BIU_CONF1));
    838 		BXW2(pcs, IspVirt2Off(isp, BIU_CONF1),
    839 		    oc | BIU_PCI1080_CONF1_DMA);
    840 	}
    841 	BXW2(pcs, IspVirt2Off(isp, regoff), val);
    842 	if (oc) {
    843 		BXW2(pcs, IspVirt2Off(isp, BIU_CONF1), oc);
    844 	}
    845 }
    846 #endif
    847 
    848 static int
    849 isp_pci_mbxdma(struct ispsoftc *isp)
    850 {
    851 	struct isp_pcisoftc *pcs = (struct isp_pcisoftc *)isp;
    852 	bus_dma_tag_t dmat = isp->isp_dmatag;
    853 	bus_dma_segment_t sg;
    854 	bus_size_t len;
    855 	fcparam *fcp;
    856 	int rs, i;
    857 
    858 	if (isp->isp_rquest_dma)	/* been here before? */
    859 		return (0);
    860 
    861 	len = isp->isp_maxcmds * sizeof (XS_T *);
    862 	isp->isp_xflist = (XS_T **) malloc(len, M_DEVBUF, M_WAITOK);
    863 	if (isp->isp_xflist == NULL) {
    864 		isp_prt(isp, ISP_LOGERR, "cannot malloc xflist array");
    865 		return (1);
    866 	}
    867 	memset(isp->isp_xflist, 0, len);
    868 	len = isp->isp_maxcmds * sizeof (bus_dmamap_t);
    869 	pcs->pci_xfer_dmap = (bus_dmamap_t *) malloc(len, M_DEVBUF, M_WAITOK);
    870 	if (pcs->pci_xfer_dmap == NULL) {
    871 		free(isp->isp_xflist, M_DEVBUF);
    872 		isp->isp_xflist = NULL;
    873 		isp_prt(isp, ISP_LOGERR, "cannot malloc dma map array");
    874 		return (1);
    875 	}
    876 	for (i = 0; i < isp->isp_maxcmds; i++) {
    877 		if (bus_dmamap_create(dmat, MAXPHYS, (MAXPHYS / PAGE_SIZE) + 1,
    878 		    MAXPHYS, 0, BUS_DMA_NOWAIT, &pcs->pci_xfer_dmap[i])) {
    879 			isp_prt(isp, ISP_LOGERR, "cannot create dma maps");
    880 			break;
    881 		}
    882 	}
    883 	if (i < isp->isp_maxcmds) {
    884 		while (--i >= 0) {
    885 			bus_dmamap_destroy(dmat, pcs->pci_xfer_dmap[i]);
    886 		}
    887 		free(isp->isp_xflist, M_DEVBUF);
    888 		free(pcs->pci_xfer_dmap, M_DEVBUF);
    889 		isp->isp_xflist = NULL;
    890 		pcs->pci_xfer_dmap = NULL;
    891 		return (1);
    892 	}
    893 
    894 	/*
    895 	 * Allocate and map the request queue.
    896 	 */
    897 	len = ISP_QUEUE_SIZE(RQUEST_QUEUE_LEN(isp));
    898 	if (bus_dmamem_alloc(dmat, len, PAGE_SIZE, 0, &sg, 1, &rs,
    899 			     BUS_DMA_NOWAIT) ||
    900 	    bus_dmamem_map(isp->isp_dmatag, &sg, rs, len,
    901 	    (caddr_t *)&isp->isp_rquest, BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) {
    902 		goto dmafail;
    903 	}
    904 
    905 	if (bus_dmamap_create(dmat, len, 1, len, 0, BUS_DMA_NOWAIT,
    906 	    &isp->isp_rqdmap) || bus_dmamap_load(dmat, isp->isp_rqdmap,
    907 	    (caddr_t)isp->isp_rquest, len, NULL,
    908 	    BUS_DMA_NOWAIT)) {
    909 		goto dmafail;
    910 	}
    911 	isp->isp_rquest_dma = isp->isp_rqdmap->dm_segs[0].ds_addr;
    912 
    913 	/*
    914 	 * Allocate and map the result queue.
    915 	 */
    916 	len = ISP_QUEUE_SIZE(RESULT_QUEUE_LEN(isp));
    917 	if (bus_dmamem_alloc(dmat, len, PAGE_SIZE, 0, &sg, 1, &rs,
    918 			     BUS_DMA_NOWAIT) ||
    919 	    bus_dmamem_map(dmat, &sg, rs, len, (caddr_t *)&isp->isp_result,
    920 	    BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) {
    921 		goto dmafail;
    922 	}
    923 	if (bus_dmamap_create(dmat, len, 1, len, 0, BUS_DMA_NOWAIT,
    924 	    &isp->isp_rsdmap) || bus_dmamap_load(isp->isp_dmatag,
    925 	    isp->isp_rsdmap, (caddr_t)isp->isp_result, len, NULL,
    926 	    BUS_DMA_NOWAIT)) {
    927 		goto dmafail;
    928 	}
    929 	isp->isp_result_dma = isp->isp_rsdmap->dm_segs[0].ds_addr;
    930 
    931 	if (IS_SCSI(isp)) {
    932 		return (0);
    933 	}
    934 
    935 	fcp = isp->isp_param;
    936 	len = ISP2100_SCRLEN;
    937 	if (bus_dmamem_alloc(dmat, len, PAGE_SIZE, 0, &sg, 1, &rs,
    938 			     BUS_DMA_NOWAIT) ||
    939 	    bus_dmamem_map(dmat, &sg, rs, len, (caddr_t *)&fcp->isp_scratch,
    940 	    BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) {
    941 		goto dmafail;
    942 	}
    943 	if (bus_dmamap_create(dmat, len, 1, len, 0, BUS_DMA_NOWAIT,
    944 	    &isp->isp_scdmap) || bus_dmamap_load(dmat,
    945 	    isp->isp_scdmap, (caddr_t)fcp->isp_scratch, len, NULL,
    946 	    BUS_DMA_NOWAIT)) {
    947 		goto dmafail;
    948 	}
    949 	fcp->isp_scdma = isp->isp_scdmap->dm_segs[0].ds_addr;
    950 	return (0);
    951 dmafail:
    952 	isp_prt(isp, ISP_LOGERR, "mailbox dma setup failure");
    953 	for (i = 0; i < isp->isp_maxcmds; i++) {
    954 		bus_dmamap_destroy(dmat, pcs->pci_xfer_dmap[i]);
    955 	}
    956 	free(isp->isp_xflist, M_DEVBUF);
    957 	free(pcs->pci_xfer_dmap, M_DEVBUF);
    958 	isp->isp_xflist = NULL;
    959 	pcs->pci_xfer_dmap = NULL;
    960 	return (1);
    961 }
    962 
    963 static int
    964 isp_pci_dmasetup(struct ispsoftc *isp, struct scsipi_xfer *xs, ispreq_t *rq,
    965     u_int16_t *nxtip, u_int16_t optr)
    966 {
    967 	struct isp_pcisoftc *pcs = (struct isp_pcisoftc *)isp;
    968 	bus_dmamap_t dmap;
    969 	u_int16_t starti = isp->isp_reqidx, nxti = *nxtip;
    970 	ispreq_t *qep;
    971 	int segcnt, seg, error, ovseg, seglim, drq;
    972 
    973 	qep = (ispreq_t *) ISP_QUEUE_ENTRY(isp->isp_rquest, starti);
    974 	dmap = pcs->pci_xfer_dmap[isp_handle_index(rq->req_handle)];
    975 	if (xs->datalen == 0) {
    976 		rq->req_seg_count = 1;
    977 		goto mbxsync;
    978 	}
    979 	if (xs->xs_control & XS_CTL_DATA_IN) {
    980 		drq = REQFLAG_DATA_IN;
    981 	} else {
    982 		drq = REQFLAG_DATA_OUT;
    983 	}
    984 
    985 	if (IS_FC(isp)) {
    986 		seglim = ISP_RQDSEG_T2;
    987 		((ispreqt2_t *)rq)->req_totalcnt = xs->datalen;
    988 		((ispreqt2_t *)rq)->req_flags |= drq;
    989 	} else {
    990 		rq->req_flags |= drq;
    991 		if (XS_CDBLEN(xs) > 12) {
    992 			seglim = 0;
    993 		} else {
    994 			seglim = ISP_RQDSEG;
    995 		}
    996 	}
    997 	error = bus_dmamap_load(isp->isp_dmatag, dmap, xs->data, xs->datalen,
    998 	    NULL, ((xs->xs_control & XS_CTL_NOSLEEP) ?
    999 	    BUS_DMA_NOWAIT : BUS_DMA_WAITOK) | BUS_DMA_STREAMING |
   1000 	    ((xs->xs_control & XS_CTL_DATA_IN) ? BUS_DMA_READ : BUS_DMA_WRITE));
   1001 	if (error) {
   1002 		XS_SETERR(xs, HBA_BOTCH);
   1003 		return (CMD_COMPLETE);
   1004 	}
   1005 
   1006 	segcnt = dmap->dm_nsegs;
   1007 
   1008 	isp_prt(isp, ISP_LOGDEBUG2, "%d byte %s %p in %d segs",
   1009 	    xs->datalen, (xs->xs_control & XS_CTL_DATA_IN)? "read to" :
   1010 	    "write from", xs->data, segcnt);
   1011 
   1012 	for (seg = 0, rq->req_seg_count = 0;
   1013 	    seglim && seg < segcnt && rq->req_seg_count < seglim;
   1014 	    seg++, rq->req_seg_count++) {
   1015 		if (IS_FC(isp)) {
   1016 			ispreqt2_t *rq2 = (ispreqt2_t *)rq;
   1017 			rq2->req_dataseg[rq2->req_seg_count].ds_count =
   1018 			    dmap->dm_segs[seg].ds_len;
   1019 			rq2->req_dataseg[rq2->req_seg_count].ds_base =
   1020 			    dmap->dm_segs[seg].ds_addr;
   1021 		} else {
   1022 			rq->req_dataseg[rq->req_seg_count].ds_count =
   1023 			    dmap->dm_segs[seg].ds_len;
   1024 			rq->req_dataseg[rq->req_seg_count].ds_base =
   1025 			    dmap->dm_segs[seg].ds_addr;
   1026 		}
   1027 		isp_prt(isp, ISP_LOGDEBUG2, "seg0.[%d]={0x%lx,%lu}",
   1028 		    rq->req_seg_count, (long) dmap->dm_segs[seg].ds_addr,
   1029 		    (unsigned long) dmap->dm_segs[seg].ds_len);
   1030 	}
   1031 
   1032 	if (seg == segcnt) {
   1033 		goto dmasync;
   1034 	}
   1035 
   1036 	do {
   1037 		u_int16_t onxti;
   1038 		ispcontreq_t *crq, *cqe, local;
   1039 
   1040 		crq = &local;
   1041 
   1042 		cqe = (ispcontreq_t *) ISP_QUEUE_ENTRY(isp->isp_rquest, nxti);
   1043 		onxti = nxti;
   1044 		nxti = ISP_NXT_QENTRY(onxti, RQUEST_QUEUE_LEN(isp));
   1045 		if (nxti == optr) {
   1046 			isp_prt(isp, ISP_LOGDEBUG0, "Request Queue Overflow++");
   1047 			bus_dmamap_unload(isp->isp_dmatag, dmap);
   1048 			XS_SETERR(xs, HBA_BOTCH);
   1049 			return (CMD_EAGAIN);
   1050 		}
   1051 		rq->req_header.rqs_entry_count++;
   1052 		memset((void *)crq, 0, sizeof (*crq));
   1053 		crq->req_header.rqs_entry_count = 1;
   1054 		crq->req_header.rqs_entry_type = RQSTYPE_DATASEG;
   1055 
   1056 		for (ovseg = 0; seg < segcnt && ovseg < ISP_CDSEG;
   1057 		    rq->req_seg_count++, seg++, ovseg++) {
   1058 			crq->req_dataseg[ovseg].ds_count =
   1059 			    dmap->dm_segs[seg].ds_len;
   1060 			crq->req_dataseg[ovseg].ds_base =
   1061 			    dmap->dm_segs[seg].ds_addr;
   1062 			isp_prt(isp, ISP_LOGDEBUG2, "seg%d.[%d]={0x%lx,%lu}",
   1063 			    rq->req_header.rqs_entry_count - 1,
   1064 			    rq->req_seg_count, (long)dmap->dm_segs[seg].ds_addr,
   1065 			    (unsigned long) dmap->dm_segs[seg].ds_len);
   1066 		}
   1067 		isp_put_cont_req(isp, crq, cqe);
   1068 		MEMORYBARRIER(isp, SYNC_REQUEST, onxti, QENTRY_LEN);
   1069 	} while (seg < segcnt);
   1070 
   1071 
   1072 dmasync:
   1073 	bus_dmamap_sync(isp->isp_dmatag, dmap, 0, dmap->dm_mapsize,
   1074 	    (xs->xs_control & XS_CTL_DATA_IN) ?  BUS_DMASYNC_PREREAD :
   1075 	    BUS_DMASYNC_PREWRITE);
   1076 
   1077 mbxsync:
   1078 	switch (rq->req_header.rqs_entry_type) {
   1079 	case RQSTYPE_REQUEST:
   1080 		isp_put_request(isp, rq, qep);
   1081 		break;
   1082 	case RQSTYPE_CMDONLY:
   1083 		isp_put_extended_request(isp, (ispextreq_t *)rq,
   1084 		    (ispextreq_t *)qep);
   1085 		break;
   1086 	case RQSTYPE_T2RQS:
   1087 		isp_put_request_t2(isp, (ispreqt2_t *) rq, (ispreqt2_t *) qep);
   1088 		break;
   1089 	}
   1090 	*nxtip = nxti;
   1091 	return (CMD_QUEUED);
   1092 }
   1093 
   1094 static int
   1095 isp_pci_intr(void *arg)
   1096 {
   1097 	u_int16_t isr, sema, mbox;
   1098 	struct ispsoftc *isp = arg;
   1099 
   1100 	isp->isp_intcnt++;
   1101 	if (ISP_READ_ISR(isp, &isr, &sema, &mbox) == 0) {
   1102 		isp->isp_intbogus++;
   1103 		return (0);
   1104 	} else {
   1105 		isp->isp_osinfo.onintstack = 1;
   1106 		isp_intr(isp, isr, sema, mbox);
   1107 		isp->isp_osinfo.onintstack = 0;
   1108 		return (1);
   1109 	}
   1110 }
   1111 
   1112 static void
   1113 isp_pci_dmateardown(struct ispsoftc *isp, XS_T *xs, u_int16_t handle)
   1114 {
   1115 	struct isp_pcisoftc *pcs = (struct isp_pcisoftc *)isp;
   1116 	bus_dmamap_t dmap = pcs->pci_xfer_dmap[isp_handle_index(handle)];
   1117 	bus_dmamap_sync(isp->isp_dmatag, dmap, 0, dmap->dm_mapsize,
   1118 	    xs->xs_control & XS_CTL_DATA_IN ?
   1119 	    BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE);
   1120 	bus_dmamap_unload(isp->isp_dmatag, dmap);
   1121 }
   1122 
   1123 static void
   1124 isp_pci_reset1(struct ispsoftc *isp)
   1125 {
   1126 	/* Make sure the BIOS is disabled */
   1127 	isp_pci_wr_reg(isp, HCCR, PCI_HCCR_CMD_BIOS);
   1128 }
   1129 
   1130 static void
   1131 isp_pci_dumpregs(struct ispsoftc *isp, const char *msg)
   1132 {
   1133 	struct isp_pcisoftc *pcs = (struct isp_pcisoftc *)isp;
   1134 	if (msg)
   1135 		printf("%s: %s\n", isp->isp_name, msg);
   1136 	if (IS_SCSI(isp))
   1137 		printf("    biu_conf1=%x", ISP_READ(isp, BIU_CONF1));
   1138 	else
   1139 		printf("    biu_csr=%x", ISP_READ(isp, BIU2100_CSR));
   1140 	printf(" biu_icr=%x biu_isr=%x biu_sema=%x ", ISP_READ(isp, BIU_ICR),
   1141 	    ISP_READ(isp, BIU_ISR), ISP_READ(isp, BIU_SEMA));
   1142 	printf("risc_hccr=%x\n", ISP_READ(isp, HCCR));
   1143 
   1144 
   1145 	if (IS_SCSI(isp)) {
   1146 		ISP_WRITE(isp, HCCR, HCCR_CMD_PAUSE);
   1147 		printf("    cdma_conf=%x cdma_sts=%x cdma_fifostat=%x\n",
   1148 			ISP_READ(isp, CDMA_CONF), ISP_READ(isp, CDMA_STATUS),
   1149 			ISP_READ(isp, CDMA_FIFO_STS));
   1150 		printf("    ddma_conf=%x ddma_sts=%x ddma_fifostat=%x\n",
   1151 			ISP_READ(isp, DDMA_CONF), ISP_READ(isp, DDMA_STATUS),
   1152 			ISP_READ(isp, DDMA_FIFO_STS));
   1153 		printf("    sxp_int=%x sxp_gross=%x sxp(scsi_ctrl)=%x\n",
   1154 			ISP_READ(isp, SXP_INTERRUPT),
   1155 			ISP_READ(isp, SXP_GROSS_ERR),
   1156 			ISP_READ(isp, SXP_PINS_CTRL));
   1157 		ISP_WRITE(isp, HCCR, HCCR_CMD_RELEASE);
   1158 	}
   1159 	printf("    mbox regs: %x %x %x %x %x\n",
   1160 	    ISP_READ(isp, OUTMAILBOX0), ISP_READ(isp, OUTMAILBOX1),
   1161 	    ISP_READ(isp, OUTMAILBOX2), ISP_READ(isp, OUTMAILBOX3),
   1162 	    ISP_READ(isp, OUTMAILBOX4));
   1163 	printf("    PCI Status Command/Status=%x\n",
   1164 	    pci_conf_read(pcs->pci_pc, pcs->pci_tag, PCI_COMMAND_STATUS_REG));
   1165 }
   1166