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isp_pci.c revision 1.72
      1 /* $NetBSD: isp_pci.c,v 1.72 2001/09/01 07:12:25 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 <dev/ic/isp_netbsd.h>
     60 #include <dev/pci/pcireg.h>
     61 #include <dev/pci/pcivar.h>
     62 #include <dev/pci/pcidevs.h>
     63 #include <uvm/uvm_extern.h>
     64 #include <sys/reboot.h>
     65 
     66 static u_int16_t isp_pci_rd_reg(struct ispsoftc *, int);
     67 static void isp_pci_wr_reg(struct ispsoftc *, int, u_int16_t);
     68 #if !(defined(ISP_DISABLE_1080_SUPPORT) && defined(ISP_DISABLE_12160_SUPPORT))
     69 static u_int16_t isp_pci_rd_reg_1080(struct ispsoftc *, int);
     70 static void isp_pci_wr_reg_1080(struct ispsoftc *, int, u_int16_t);
     71 #endif
     72 static int
     73 isp_pci_rd_isr(struct ispsoftc *, u_int16_t *, u_int16_t *, u_int16_t *);
     74 static int
     75 isp_pci_rd_isr_2300(struct ispsoftc *, u_int16_t *, u_int16_t *, u_int16_t *);
     76 static int isp_pci_mbxdma(struct ispsoftc *);
     77 static int isp_pci_dmasetup(struct ispsoftc *, XS_T *, ispreq_t *,
     78     u_int16_t *, u_int16_t);
     79 static void isp_pci_dmateardown(struct ispsoftc *, XS_T *, u_int16_t);
     80 static void isp_pci_reset1(struct ispsoftc *);
     81 static void isp_pci_dumpregs(struct ispsoftc *, const char *);
     82 static int isp_pci_intr(void *);
     83 
     84 #if	defined(ISP_DISABLE_1020_SUPPORT)
     85 #define	ISP_1040_RISC_CODE	NULL
     86 #else
     87 #define	ISP_1040_RISC_CODE	isp_1040_risc_code
     88 #include <dev/microcode/isp/asm_1040.h>
     89 #endif
     90 
     91 #if	defined(ISP_DISABLE_1080_SUPPORT)
     92 #define	ISP_1080_RISC_CODE	NULL
     93 #else
     94 #define	ISP_1080_RISC_CODE	isp_1080_risc_code
     95 #include <dev/microcode/isp/asm_1080.h>
     96 #endif
     97 
     98 #if	defined(ISP_DISABLE_12160_SUPPORT)
     99 #define	ISP_12160_RISC_CODE	NULL
    100 #else
    101 #define	ISP_12160_RISC_CODE	isp_12160_risc_code
    102 #include <dev/microcode/isp/asm_12160.h>
    103 #endif
    104 
    105 #if	defined(ISP_DISABLE_2100_SUPPORT)
    106 #define	ISP_2100_RISC_CODE	NULL
    107 #else
    108 #define	ISP_2100_RISC_CODE	isp_2100_risc_code
    109 #include <dev/microcode/isp/asm_2100.h>
    110 #endif
    111 
    112 #if	defined(ISP_DISABLE_2200_SUPPORT)
    113 #define	ISP_2200_RISC_CODE	NULL
    114 #else
    115 #define	ISP_2200_RISC_CODE	isp_2200_risc_code
    116 #include <dev/microcode/isp/asm_2200.h>
    117 #endif
    118 
    119 #if	defined(ISP_DISABLE_2300_SUPPORT)
    120 #define	ISP_2300_RISC_CODE	NULL
    121 #else
    122 #define	ISP_2300_RISC_CODE	isp_2300_risc_code
    123 #include <dev/microcode/isp/asm_2300.h>
    124 #endif
    125 
    126 #ifndef	ISP_DISABLE_1020_SUPPORT
    127 static struct ispmdvec mdvec = {
    128 	isp_pci_rd_isr,
    129 	isp_pci_rd_reg,
    130 	isp_pci_wr_reg,
    131 	isp_pci_mbxdma,
    132 	isp_pci_dmasetup,
    133 	isp_pci_dmateardown,
    134 	NULL,
    135 	isp_pci_reset1,
    136 	isp_pci_dumpregs,
    137 	ISP_1040_RISC_CODE,
    138 	BIU_BURST_ENABLE|BIU_PCI_CONF1_FIFO_64
    139 };
    140 #endif
    141 
    142 #ifndef	ISP_DISABLE_1080_SUPPORT
    143 static struct ispmdvec mdvec_1080 = {
    144 	isp_pci_rd_isr,
    145 	isp_pci_rd_reg_1080,
    146 	isp_pci_wr_reg_1080,
    147 	isp_pci_mbxdma,
    148 	isp_pci_dmasetup,
    149 	isp_pci_dmateardown,
    150 	NULL,
    151 	isp_pci_reset1,
    152 	isp_pci_dumpregs,
    153 	ISP_1080_RISC_CODE,
    154 	BIU_BURST_ENABLE|BIU_PCI_CONF1_FIFO_64
    155 };
    156 #endif
    157 
    158 #ifndef	ISP_DISABLE_12160_SUPPORT
    159 static struct ispmdvec mdvec_12160 = {
    160 	isp_pci_rd_isr,
    161 	isp_pci_rd_reg_1080,
    162 	isp_pci_wr_reg_1080,
    163 	isp_pci_mbxdma,
    164 	isp_pci_dmasetup,
    165 	isp_pci_dmateardown,
    166 	NULL,
    167 	isp_pci_reset1,
    168 	isp_pci_dumpregs,
    169 	ISP_12160_RISC_CODE,
    170 	BIU_BURST_ENABLE|BIU_PCI_CONF1_FIFO_64
    171 };
    172 #endif
    173 
    174 #ifndef	ISP_DISABLE_2100_SUPPORT
    175 static struct ispmdvec mdvec_2100 = {
    176 	isp_pci_rd_isr,
    177 	isp_pci_rd_reg,
    178 	isp_pci_wr_reg,
    179 	isp_pci_mbxdma,
    180 	isp_pci_dmasetup,
    181 	isp_pci_dmateardown,
    182 	NULL,
    183 	isp_pci_reset1,
    184 	isp_pci_dumpregs,
    185 	ISP_2100_RISC_CODE
    186 };
    187 #endif
    188 
    189 #ifndef	ISP_DISABLE_2200_SUPPORT
    190 static struct ispmdvec mdvec_2200 = {
    191 	isp_pci_rd_isr,
    192 	isp_pci_rd_reg,
    193 	isp_pci_wr_reg,
    194 	isp_pci_mbxdma,
    195 	isp_pci_dmasetup,
    196 	isp_pci_dmateardown,
    197 	NULL,
    198 	isp_pci_reset1,
    199 	isp_pci_dumpregs,
    200 	ISP_2200_RISC_CODE
    201 };
    202 #endif
    203 
    204 #ifndef	ISP_DISABLE_2300_SUPPORT
    205 static struct ispmdvec mdvec_2300 = {
    206 	isp_pci_rd_isr_2300,
    207 	isp_pci_rd_reg,
    208 	isp_pci_wr_reg,
    209 	isp_pci_mbxdma,
    210 	isp_pci_dmasetup,
    211 	isp_pci_dmateardown,
    212 	NULL,
    213 	isp_pci_reset1,
    214 	isp_pci_dumpregs,
    215 	ISP_2300_RISC_CODE
    216 };
    217 #endif
    218 
    219 #ifndef	PCI_VENDOR_QLOGIC
    220 #define	PCI_VENDOR_QLOGIC	0x1077
    221 #endif
    222 
    223 #ifndef	PCI_PRODUCT_QLOGIC_ISP1020
    224 #define	PCI_PRODUCT_QLOGIC_ISP1020	0x1020
    225 #endif
    226 
    227 #ifndef	PCI_PRODUCT_QLOGIC_ISP1080
    228 #define	PCI_PRODUCT_QLOGIC_ISP1080	0x1080
    229 #endif
    230 
    231 #ifndef	PCI_PRODUCT_QLOGIC_ISP1240
    232 #define	PCI_PRODUCT_QLOGIC_ISP1240	0x1240
    233 #endif
    234 
    235 #ifndef	PCI_PRODUCT_QLOGIC_ISP1280
    236 #define	PCI_PRODUCT_QLOGIC_ISP1280	0x1280
    237 #endif
    238 
    239 #ifndef	PCI_PRODUCT_QLOGIC_ISP12160
    240 #define	PCI_PRODUCT_QLOGIC_ISP12160	0x1216
    241 #endif
    242 
    243 #ifndef	PCI_PRODUCT_QLOGIC_ISP2100
    244 #define	PCI_PRODUCT_QLOGIC_ISP2100	0x2100
    245 #endif
    246 
    247 #ifndef	PCI_PRODUCT_QLOGIC_ISP2200
    248 #define	PCI_PRODUCT_QLOGIC_ISP2200	0x2200
    249 #endif
    250 
    251 #ifndef	PCI_PRODUCT_QLOGIC_ISP2300
    252 #define	PCI_PRODUCT_QLOGIC_ISP2300	0x2300
    253 #endif
    254 
    255 #ifndef	PCI_PRODUCT_QLOGIC_ISP2312
    256 #define	PCI_PRODUCT_QLOGIC_ISP2312	0x2312
    257 #endif
    258 
    259 #define	PCI_QLOGIC_ISP	((PCI_PRODUCT_QLOGIC_ISP1020 << 16) | PCI_VENDOR_QLOGIC)
    260 
    261 #define	PCI_QLOGIC_ISP1080	\
    262 	((PCI_PRODUCT_QLOGIC_ISP1080 << 16) | PCI_VENDOR_QLOGIC)
    263 
    264 #define	PCI_QLOGIC_ISP1240	\
    265 	((PCI_PRODUCT_QLOGIC_ISP1240 << 16) | PCI_VENDOR_QLOGIC)
    266 
    267 #define	PCI_QLOGIC_ISP1280	\
    268 	((PCI_PRODUCT_QLOGIC_ISP1280 << 16) | PCI_VENDOR_QLOGIC)
    269 
    270 #define	PCI_QLOGIC_ISP12160	\
    271 	((PCI_PRODUCT_QLOGIC_ISP12160 << 16) | PCI_VENDOR_QLOGIC)
    272 
    273 #define	PCI_QLOGIC_ISP2100	\
    274 	((PCI_PRODUCT_QLOGIC_ISP2100 << 16) | PCI_VENDOR_QLOGIC)
    275 
    276 #define	PCI_QLOGIC_ISP2200	\
    277 	((PCI_PRODUCT_QLOGIC_ISP2200 << 16) | PCI_VENDOR_QLOGIC)
    278 
    279 #define	PCI_QLOGIC_ISP2300	\
    280 	((PCI_PRODUCT_QLOGIC_ISP2300 << 16) | PCI_VENDOR_QLOGIC)
    281 
    282 #define	PCI_QLOGIC_ISP2312	\
    283 	((PCI_PRODUCT_QLOGIC_ISP2312 << 16) | PCI_VENDOR_QLOGIC)
    284 
    285 #define	IO_MAP_REG	0x10
    286 #define	MEM_MAP_REG	0x14
    287 #define	PCIR_ROMADDR	0x30
    288 
    289 #define	PCI_DFLT_LTNCY	0x40
    290 #define	PCI_DFLT_LNSZ	0x10
    291 
    292 
    293 static int isp_pci_probe(struct device *, struct cfdata *, void *);
    294 static void isp_pci_attach(struct device *, struct device *, void *);
    295 
    296 struct isp_pcisoftc {
    297 	struct ispsoftc		pci_isp;
    298 	pci_chipset_tag_t	pci_pc;
    299 	pcitag_t		pci_tag;
    300 	bus_space_tag_t		pci_st;
    301 	bus_space_handle_t	pci_sh;
    302 	bus_dma_tag_t		pci_dmat;
    303 	bus_dmamap_t		pci_scratch_dmap;	/* for fcp only */
    304 	bus_dmamap_t		pci_rquest_dmap;
    305 	bus_dmamap_t		pci_result_dmap;
    306 	bus_dmamap_t		*pci_xfer_dmap;
    307 	void *			pci_ih;
    308 	int16_t			pci_poff[_NREG_BLKS];
    309 };
    310 
    311 struct cfattach isp_pci_ca = {
    312 	sizeof (struct isp_pcisoftc), isp_pci_probe, isp_pci_attach
    313 };
    314 
    315 #ifdef	DEBUG
    316 const char vstring[] =
    317     "Qlogic ISP Driver, NetBSD (pci) Platform Version %d.%d Core Version %d.%d";
    318 #endif
    319 
    320 static int
    321 isp_pci_probe(struct device *parent, struct cfdata *match, void *aux)
    322 {
    323 	struct pci_attach_args *pa = aux;
    324 	switch (pa->pa_id) {
    325 #ifndef	ISP_DISABLE_1020_SUPPORT
    326 	case PCI_QLOGIC_ISP:
    327 		return (1);
    328 #endif
    329 #ifndef	ISP_DISABLE_1080_SUPPORT
    330 	case PCI_QLOGIC_ISP1080:
    331 	case PCI_QLOGIC_ISP1240:
    332 	case PCI_QLOGIC_ISP1280:
    333 		return (1);
    334 #endif
    335 #ifndef	ISP_DISABLE_12160_SUPPORT
    336 	case PCI_QLOGIC_ISP12160:
    337 		return (1);
    338 #endif
    339 #ifndef	ISP_DISABLE_2100_SUPPORT
    340 	case PCI_QLOGIC_ISP2100:
    341 		return (1);
    342 #endif
    343 #ifndef	ISP_DISABLE_2200_SUPPORT
    344 	case PCI_QLOGIC_ISP2200:
    345 		return (1);
    346 #endif
    347 #ifndef	ISP_DISABLE_2300_SUPPORT
    348 	case PCI_QLOGIC_ISP2300:
    349 	case PCI_QLOGIC_ISP2312:
    350 		return (1);
    351 #endif
    352 	default:
    353 		return (0);
    354 	}
    355 }
    356 
    357 
    358 static void
    359 isp_pci_attach(struct device *parent, struct device *self, void *aux)
    360 {
    361 #ifdef	DEBUG
    362 	static char oneshot = 1;
    363 #endif
    364 	static const char nomem[] = "%s: no mem for sdparam table\n";
    365 	u_int32_t data, rev, linesz = PCI_DFLT_LNSZ;
    366 	struct pci_attach_args *pa = aux;
    367 	struct isp_pcisoftc *pcs = (struct isp_pcisoftc *) self;
    368 	struct ispsoftc *isp = &pcs->pci_isp;
    369 	bus_space_tag_t st, iot, memt;
    370 	bus_space_handle_t sh, ioh, memh;
    371 	pci_intr_handle_t ih;
    372 	const char *intrstr;
    373 	int ioh_valid, memh_valid;
    374 
    375 	ioh_valid = (pci_mapreg_map(pa, IO_MAP_REG,
    376 	    PCI_MAPREG_TYPE_IO, 0,
    377 	    &iot, &ioh, NULL, NULL) == 0);
    378 	memh_valid = (pci_mapreg_map(pa, MEM_MAP_REG,
    379 	    PCI_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_32BIT, 0,
    380 	    &memt, &memh, NULL, NULL) == 0);
    381 	if (memh_valid) {
    382 		st = memt;
    383 		sh = memh;
    384 	} else if (ioh_valid) {
    385 		st = iot;
    386 		sh = ioh;
    387 	} else {
    388 		printf(": unable to map device registers\n");
    389 		return;
    390 	}
    391 	printf("\n");
    392 
    393 	pcs->pci_st = st;
    394 	pcs->pci_sh = sh;
    395 	pcs->pci_dmat = pa->pa_dmat;
    396 	pcs->pci_pc = pa->pa_pc;
    397 	pcs->pci_tag = pa->pa_tag;
    398 	pcs->pci_poff[BIU_BLOCK >> _BLK_REG_SHFT] = BIU_REGS_OFF;
    399 	pcs->pci_poff[MBOX_BLOCK >> _BLK_REG_SHFT] = PCI_MBOX_REGS_OFF;
    400 	pcs->pci_poff[SXP_BLOCK >> _BLK_REG_SHFT] = PCI_SXP_REGS_OFF;
    401 	pcs->pci_poff[RISC_BLOCK >> _BLK_REG_SHFT] = PCI_RISC_REGS_OFF;
    402 	pcs->pci_poff[DMA_BLOCK >> _BLK_REG_SHFT] = DMA_REGS_OFF;
    403 	rev = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_CLASS_REG) & 0xff;
    404 
    405 #ifndef	ISP_DISABLE_1020_SUPPORT
    406 	if (pa->pa_id == PCI_QLOGIC_ISP) {
    407 		isp->isp_mdvec = &mdvec;
    408 		isp->isp_type = ISP_HA_SCSI_UNKNOWN;
    409 		isp->isp_param = malloc(sizeof (sdparam), M_DEVBUF, M_NOWAIT);
    410 		if (isp->isp_param == NULL) {
    411 			printf(nomem, isp->isp_name);
    412 			return;
    413 		}
    414 		memset(isp->isp_param, 0, sizeof (sdparam));
    415 	}
    416 #endif
    417 #ifndef	ISP_DISABLE_1080_SUPPORT
    418 	if (pa->pa_id == PCI_QLOGIC_ISP1080) {
    419 		isp->isp_mdvec = &mdvec_1080;
    420 		isp->isp_type = ISP_HA_SCSI_1080;
    421 		isp->isp_param = malloc(sizeof (sdparam), M_DEVBUF, M_NOWAIT);
    422 		if (isp->isp_param == NULL) {
    423 			printf(nomem, isp->isp_name);
    424 			return;
    425 		}
    426 		memset(isp->isp_param, 0, sizeof (sdparam));
    427 		pcs->pci_poff[DMA_BLOCK >> _BLK_REG_SHFT] =
    428 		    ISP1080_DMA_REGS_OFF;
    429 	}
    430 	if (pa->pa_id == PCI_QLOGIC_ISP1240) {
    431 		isp->isp_mdvec = &mdvec_1080;
    432 		isp->isp_type = ISP_HA_SCSI_1240;
    433 		isp->isp_param =
    434 		    malloc(2 * sizeof (sdparam), M_DEVBUF, M_NOWAIT);
    435 		if (isp->isp_param == NULL) {
    436 			printf(nomem, isp->isp_name);
    437 			return;
    438 		}
    439 		memset(isp->isp_param, 0, 2 * sizeof (sdparam));
    440 		pcs->pci_poff[DMA_BLOCK >> _BLK_REG_SHFT] =
    441 		    ISP1080_DMA_REGS_OFF;
    442 	}
    443 	if (pa->pa_id == PCI_QLOGIC_ISP1280) {
    444 		isp->isp_mdvec = &mdvec_1080;
    445 		isp->isp_type = ISP_HA_SCSI_1280;
    446 		isp->isp_param =
    447 		    malloc(2 * sizeof (sdparam), M_DEVBUF, M_NOWAIT);
    448 		if (isp->isp_param == NULL) {
    449 			printf(nomem, isp->isp_name);
    450 			return;
    451 		}
    452 		memset(isp->isp_param, 0, 2 * sizeof (sdparam));
    453 		pcs->pci_poff[DMA_BLOCK >> _BLK_REG_SHFT] =
    454 		    ISP1080_DMA_REGS_OFF;
    455 	}
    456 #endif
    457 #ifndef	ISP_DISABLE_12160_SUPPORT
    458 	if (pa->pa_id == PCI_QLOGIC_ISP12160) {
    459 		isp->isp_mdvec = &mdvec_12160;
    460 		isp->isp_type = ISP_HA_SCSI_12160;
    461 		isp->isp_param =
    462 		    malloc(2 * sizeof (sdparam), M_DEVBUF, M_NOWAIT);
    463 		if (isp->isp_param == NULL) {
    464 			printf(nomem, isp->isp_name);
    465 			return;
    466 		}
    467 		memset(isp->isp_param, 0, 2 * sizeof (sdparam));
    468 		pcs->pci_poff[DMA_BLOCK >> _BLK_REG_SHFT] =
    469 		    ISP1080_DMA_REGS_OFF;
    470 	}
    471 #endif
    472 #ifndef	ISP_DISABLE_2100_SUPPORT
    473 	if (pa->pa_id == PCI_QLOGIC_ISP2100) {
    474 		isp->isp_mdvec = &mdvec_2100;
    475 		isp->isp_type = ISP_HA_FC_2100;
    476 		isp->isp_param = malloc(sizeof (fcparam), M_DEVBUF, M_NOWAIT);
    477 		if (isp->isp_param == NULL) {
    478 			printf(nomem, isp->isp_name);
    479 			return;
    480 		}
    481 		memset(isp->isp_param, 0, sizeof (fcparam));
    482 		pcs->pci_poff[MBOX_BLOCK >> _BLK_REG_SHFT] =
    483 		    PCI_MBOX_REGS2100_OFF;
    484 		if (rev < 3) {
    485 			/*
    486 			 * XXX: Need to get the actual revision
    487 			 * XXX: number of the 2100 FB. At any rate,
    488 			 * XXX: lower cache line size for early revision
    489 			 * XXX; boards.
    490 			 */
    491 			linesz = 1;
    492 		}
    493 	}
    494 #endif
    495 #ifndef	ISP_DISABLE_2200_SUPPORT
    496 	if (pa->pa_id == PCI_QLOGIC_ISP2200) {
    497 		isp->isp_mdvec = &mdvec_2200;
    498 		isp->isp_type = ISP_HA_FC_2200;
    499 		isp->isp_param = malloc(sizeof (fcparam), M_DEVBUF, M_NOWAIT);
    500 		if (isp->isp_param == NULL) {
    501 			printf(nomem, isp->isp_name);
    502 			return;
    503 		}
    504 		memset(isp->isp_param, 0, sizeof (fcparam));
    505 		pcs->pci_poff[MBOX_BLOCK >> _BLK_REG_SHFT] =
    506 		    PCI_MBOX_REGS2100_OFF;
    507 		data = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_CLASS_REG);
    508 	}
    509 #endif
    510 #ifndef	ISP_DISABLE_2300_SUPPORT
    511 	if (pa->pa_id == PCI_QLOGIC_ISP2300 ||
    512 	    pa->pa_id == PCI_QLOGIC_ISP2312) {
    513 		isp->isp_mdvec = &mdvec_2300;
    514 		isp->isp_type = ISP_HA_FC_2300;
    515 		isp->isp_param = malloc(sizeof (fcparam), M_DEVBUF, M_NOWAIT);
    516 		if (isp->isp_param == NULL) {
    517 			printf(nomem, isp->isp_name);
    518 			return;
    519 		}
    520 		memset(isp->isp_param, 0, sizeof (fcparam));
    521 		pcs->pci_poff[MBOX_BLOCK >> _BLK_REG_SHFT] =
    522 		    PCI_MBOX_REGS2300_OFF;
    523 		data = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_CLASS_REG);
    524 	}
    525 #endif
    526 	/*
    527 	 * Set up logging levels.
    528 	 */
    529 #ifdef	ISP_LOGDEFAULT
    530 	isp->isp_dblev = ISP_LOGDEFAULT;
    531 #else
    532 	isp->isp_dblev = ISP_LOGWARN|ISP_LOGERR;
    533 	if (bootverbose)
    534 		isp->isp_dblev |= ISP_LOGCONFIG|ISP_LOGINFO;
    535 #ifdef	SCSIDEBUG
    536 	isp->isp_dblev |= ISP_LOGDEBUG1|ISP_LOGDEBUG2;
    537 #endif
    538 #ifdef	DEBUG
    539 	isp->isp_dblev |= ISP_LOGDEBUG0;
    540 #endif
    541 #endif
    542 
    543 #ifdef	DEBUG
    544 	if (oneshot) {
    545 		oneshot = 0;
    546 		isp_prt(isp, ISP_LOGCONFIG, vstring,
    547 		    ISP_PLATFORM_VERSION_MAJOR, ISP_PLATFORM_VERSION_MINOR,
    548 		    ISP_CORE_VERSION_MAJOR, ISP_CORE_VERSION_MINOR);
    549 	}
    550 #endif
    551 
    552 	isp->isp_revision = rev;
    553 
    554 	/*
    555 	 * Make sure that command register set sanely.
    556 	 */
    557 	data = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG);
    558 	data |= PCI_COMMAND_MASTER_ENABLE | PCI_COMMAND_INVALIDATE_ENABLE;
    559 
    560 	/*
    561 	 * Not so sure about these- but I think it's important that they get
    562 	 * enabled......
    563 	 */
    564 	data |= PCI_COMMAND_PARITY_ENABLE | PCI_COMMAND_SERR_ENABLE;
    565 	pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, data);
    566 
    567 	/*
    568 	 * Make sure that the latency timer, cache line size,
    569 	 * and ROM is disabled.
    570 	 */
    571 	data = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_BHLC_REG);
    572 	data &= ~(PCI_LATTIMER_MASK << PCI_LATTIMER_SHIFT);
    573 	data &= ~(PCI_CACHELINE_MASK << PCI_CACHELINE_SHIFT);
    574 	data |= (PCI_DFLT_LTNCY	<< PCI_LATTIMER_SHIFT);
    575 	data |= (linesz << PCI_CACHELINE_SHIFT);
    576 	pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_BHLC_REG, data);
    577 
    578 	data = pci_conf_read(pa->pa_pc, pa->pa_tag, PCIR_ROMADDR);
    579 	data &= ~1;
    580 	pci_conf_write(pa->pa_pc, pa->pa_tag, PCIR_ROMADDR, data);
    581 
    582 	if (pci_intr_map(pa, &ih)) {
    583 		printf("%s: couldn't map interrupt\n", isp->isp_name);
    584 		free(isp->isp_param, M_DEVBUF);
    585 		return;
    586 	}
    587 	intrstr = pci_intr_string(pa->pa_pc, ih);
    588 	if (intrstr == NULL)
    589 		intrstr = "<I dunno>";
    590 	pcs->pci_ih = pci_intr_establish(pa->pa_pc, ih, IPL_BIO,
    591 	    isp_pci_intr, isp);
    592 	if (pcs->pci_ih == NULL) {
    593 		printf("%s: couldn't establish interrupt at %s\n",
    594 			isp->isp_name, intrstr);
    595 		free(isp->isp_param, M_DEVBUF);
    596 		return;
    597 	}
    598 
    599 	printf("%s: interrupting at %s\n", isp->isp_name, intrstr);
    600 
    601 	if (IS_FC(isp)) {
    602 		DEFAULT_NODEWWN(isp) = 0x400000007F000002;
    603 		DEFAULT_PORTWWN(isp) = 0x400000007F000002;
    604 	}
    605 
    606 	isp->isp_confopts = self->dv_cfdata->cf_flags;
    607 	isp->isp_role = ISP_DEFAULT_ROLES;
    608 	ISP_LOCK(isp);
    609 	isp->isp_osinfo.no_mbox_ints = 1;
    610 	isp_reset(isp);
    611 	if (isp->isp_state != ISP_RESETSTATE) {
    612 		ISP_UNLOCK(isp);
    613 		free(isp->isp_param, M_DEVBUF);
    614 		return;
    615 	}
    616 	ENABLE_INTS(isp);
    617 	isp_init(isp);
    618 	if (isp->isp_state != ISP_INITSTATE) {
    619 		isp_uninit(isp);
    620 		ISP_UNLOCK(isp);
    621 		free(isp->isp_param, M_DEVBUF);
    622 		return;
    623 	}
    624 	/*
    625 	 * Do platform attach.
    626 	 */
    627 	ISP_UNLOCK(isp);
    628 	isp_attach(isp);
    629 	if (isp->isp_state != ISP_RUNSTATE) {
    630 		ISP_LOCK(isp);
    631 		isp_uninit(isp);
    632 		free(isp->isp_param, M_DEVBUF);
    633 		ISP_UNLOCK(isp);
    634 	}
    635 }
    636 
    637 #define	IspVirt2Off(a, x)	\
    638 	(((struct isp_pcisoftc *)a)->pci_poff[((x) & _BLK_REG_MASK) >> \
    639 	_BLK_REG_SHFT] + ((x) & 0xff))
    640 
    641 #define	BXR2(pcs, off)		\
    642 	bus_space_read_2(pcs->pci_st, pcs->pci_sh, off)
    643 #define	BXW2(pcs, off, v)	\
    644 	bus_space_write_2(pcs->pci_st, pcs->pci_sh, off, v)
    645 
    646 
    647 static INLINE int
    648 isp_pci_rd_debounced(struct ispsoftc *isp, int off, u_int16_t *rp)
    649 {
    650 	struct isp_pcisoftc *pcs = (struct isp_pcisoftc *) isp;
    651 	u_int16_t val0, val1;
    652 	int i = 0;
    653 
    654 	do {
    655 		val0 = BXR2(pcs, IspVirt2Off(isp, off));
    656 		val1 = BXR2(pcs, IspVirt2Off(isp, off));
    657 	} while (val0 != val1 && ++i < 1000);
    658 	if (val0 != val1) {
    659 		return (1);
    660 	}
    661 	*rp = val0;
    662 	return (0);
    663 }
    664 
    665 static int
    666 isp_pci_rd_isr(struct ispsoftc *isp, u_int16_t *isrp,
    667     u_int16_t *semap, u_int16_t *mbp)
    668 {
    669 	struct isp_pcisoftc *pcs = (struct isp_pcisoftc *) isp;
    670 	u_int16_t isr, sema;
    671 
    672 	if (IS_2100(isp)) {
    673 		if (isp_pci_rd_debounced(isp, BIU_ISR, &isr)) {
    674 		    return (0);
    675 		}
    676 		if (isp_pci_rd_debounced(isp, BIU_SEMA, &sema)) {
    677 		    return (0);
    678 		}
    679 	} else {
    680 		isr = BXR2(pcs, IspVirt2Off(isp, BIU_ISR));
    681 		sema = BXR2(pcs, IspVirt2Off(isp, BIU_SEMA));
    682 	}
    683 	isp_prt(isp, ISP_LOGDEBUG3, "ISR 0x%x SEMA 0x%x", isr, sema);
    684 	isr &= INT_PENDING_MASK(isp);
    685 	sema &= BIU_SEMA_LOCK;
    686 	if (isr == 0 && sema == 0) {
    687 		return (0);
    688 	}
    689 	*isrp = isr;
    690 	if ((*semap = sema) != 0) {
    691 		if (IS_2100(isp)) {
    692 			if (isp_pci_rd_debounced(isp, OUTMAILBOX0, mbp)) {
    693 				return (0);
    694 			}
    695 		} else {
    696 			*mbp = BXR2(pcs, IspVirt2Off(isp, OUTMAILBOX0));
    697 		}
    698 	}
    699 	return (1);
    700 }
    701 
    702 #ifndef	ISP_DISABLE_2300_SUPPORT
    703 static int
    704 isp_pci_rd_isr_2300(struct ispsoftc *isp, u_int16_t *isrp,
    705     u_int16_t *semap, u_int16_t *mbox0p)
    706 {
    707 	struct isp_pcisoftc *pcs = (struct isp_pcisoftc *) isp;
    708 	u_int32_t r2hisr;
    709 
    710 	r2hisr = bus_space_read_4(pcs->pci_st, pcs->pci_sh,
    711 	    IspVirt2Off(pcs, BIU_R2HSTSLO));
    712 	isp_prt(isp, ISP_LOGDEBUG3, "RISC2HOST ISR 0x%x", r2hisr);
    713 	if ((r2hisr & BIU_R2HST_INTR) == 0) {
    714 		*isrp = 0;
    715 		return (0);
    716 	}
    717 	switch (r2hisr & BIU_R2HST_ISTAT_MASK) {
    718 	case ISPR2HST_ROM_MBX_OK:
    719 	case ISPR2HST_ROM_MBX_FAIL:
    720 	case ISPR2HST_MBX_OK:
    721 	case ISPR2HST_MBX_FAIL:
    722 	case ISPR2HST_ASYNC_EVENT:
    723 	case ISPR2HST_FPOST:
    724 	case ISPR2HST_FPOST_CTIO:
    725 		*isrp = r2hisr & 0xffff;
    726 		*mbox0p = (r2hisr >> 16);
    727 		*semap = 1;
    728 		return (1);
    729 	case ISPR2HST_RSPQ_UPDATE:
    730 		*isrp = r2hisr & 0xffff;
    731 		*mbox0p = 0;
    732 		*semap = 0;
    733 		return (1);
    734 	default:
    735 		return (0);
    736 	}
    737 }
    738 #endif
    739 
    740 static u_int16_t
    741 isp_pci_rd_reg(struct ispsoftc *isp, int regoff)
    742 {
    743 	u_int16_t rv;
    744 	struct isp_pcisoftc *pcs = (struct isp_pcisoftc *) isp;
    745 	int oldconf = 0;
    746 
    747 	if ((regoff & _BLK_REG_MASK) == SXP_BLOCK) {
    748 		/*
    749 		 * We will assume that someone has paused the RISC processor.
    750 		 */
    751 		oldconf = BXR2(pcs, IspVirt2Off(isp, BIU_CONF1));
    752 		BXW2(pcs, IspVirt2Off(isp, BIU_CONF1),
    753 		    oldconf | BIU_PCI_CONF1_SXP);
    754 	}
    755 	rv = BXR2(pcs, IspVirt2Off(isp, regoff));
    756 	if ((regoff & _BLK_REG_MASK) == SXP_BLOCK) {
    757 		BXW2(pcs, IspVirt2Off(isp, BIU_CONF1), oldconf);
    758 	}
    759 	return (rv);
    760 }
    761 
    762 static void
    763 isp_pci_wr_reg(struct ispsoftc *isp, int regoff, u_int16_t val)
    764 {
    765 	struct isp_pcisoftc *pcs = (struct isp_pcisoftc *) isp;
    766 	int oldconf = 0;
    767 
    768 	if ((regoff & _BLK_REG_MASK) == SXP_BLOCK) {
    769 		/*
    770 		 * We will assume that someone has paused the RISC processor.
    771 		 */
    772 		oldconf = BXR2(pcs, IspVirt2Off(isp, BIU_CONF1));
    773 		BXW2(pcs, IspVirt2Off(isp, BIU_CONF1),
    774 		    oldconf | BIU_PCI_CONF1_SXP);
    775 	}
    776 	BXW2(pcs, IspVirt2Off(isp, regoff), val);
    777 	if ((regoff & _BLK_REG_MASK) == SXP_BLOCK) {
    778 		BXW2(pcs, IspVirt2Off(isp, BIU_CONF1), oldconf);
    779 	}
    780 }
    781 
    782 #if !(defined(ISP_DISABLE_1080_SUPPORT) && defined(ISP_DISABLE_12160_SUPPORT))
    783 static u_int16_t
    784 isp_pci_rd_reg_1080(struct ispsoftc *isp, int regoff)
    785 {
    786 	u_int16_t rv, oc = 0;
    787 	struct isp_pcisoftc *pcs = (struct isp_pcisoftc *) isp;
    788 
    789 	if ((regoff & _BLK_REG_MASK) == SXP_BLOCK ||
    790 	    (regoff & _BLK_REG_MASK) == (SXP_BLOCK|SXP_BANK1_SELECT)) {
    791 		u_int16_t tc;
    792 		/*
    793 		 * We will assume that someone has paused the RISC processor.
    794 		 */
    795 		oc = BXR2(pcs, IspVirt2Off(isp, BIU_CONF1));
    796 		tc = oc & ~BIU_PCI1080_CONF1_DMA;
    797 		if (regoff & SXP_BANK1_SELECT)
    798 			tc |= BIU_PCI1080_CONF1_SXP1;
    799 		else
    800 			tc |= BIU_PCI1080_CONF1_SXP0;
    801 		BXW2(pcs, IspVirt2Off(isp, BIU_CONF1), tc);
    802 	} else if ((regoff & _BLK_REG_MASK) == DMA_BLOCK) {
    803 		oc = BXR2(pcs, IspVirt2Off(isp, BIU_CONF1));
    804 		BXW2(pcs, IspVirt2Off(isp, BIU_CONF1),
    805 		    oc | BIU_PCI1080_CONF1_DMA);
    806 	}
    807 	rv = BXR2(pcs, IspVirt2Off(isp, regoff));
    808 	if (oc) {
    809 		BXW2(pcs, IspVirt2Off(isp, BIU_CONF1), oc);
    810 	}
    811 	return (rv);
    812 }
    813 
    814 static void
    815 isp_pci_wr_reg_1080(struct ispsoftc *isp, int regoff, u_int16_t val)
    816 {
    817 	struct isp_pcisoftc *pcs = (struct isp_pcisoftc *) isp;
    818 	int oc = 0;
    819 
    820 	if ((regoff & _BLK_REG_MASK) == SXP_BLOCK ||
    821 	    (regoff & _BLK_REG_MASK) == (SXP_BLOCK|SXP_BANK1_SELECT)) {
    822 		u_int16_t tc;
    823 		/*
    824 		 * We will assume that someone has paused the RISC processor.
    825 		 */
    826 		oc = BXR2(pcs, IspVirt2Off(isp, BIU_CONF1));
    827 		tc = oc & ~BIU_PCI1080_CONF1_DMA;
    828 		if (regoff & SXP_BANK1_SELECT)
    829 			tc |= BIU_PCI1080_CONF1_SXP1;
    830 		else
    831 			tc |= BIU_PCI1080_CONF1_SXP0;
    832 		BXW2(pcs, IspVirt2Off(isp, BIU_CONF1), tc);
    833 	} else if ((regoff & _BLK_REG_MASK) == DMA_BLOCK) {
    834 		oc = BXR2(pcs, IspVirt2Off(isp, BIU_CONF1));
    835 		BXW2(pcs, IspVirt2Off(isp, BIU_CONF1),
    836 		    oc | BIU_PCI1080_CONF1_DMA);
    837 	}
    838 	BXW2(pcs, IspVirt2Off(isp, regoff), val);
    839 	if (oc) {
    840 		BXW2(pcs, IspVirt2Off(isp, BIU_CONF1), oc);
    841 	}
    842 }
    843 #endif
    844 
    845 static int
    846 isp_pci_mbxdma(struct ispsoftc *isp)
    847 {
    848 	struct isp_pcisoftc *pcs = (struct isp_pcisoftc *)isp;
    849 	bus_dma_tag_t dmat = pcs->pci_dmat;
    850 	bus_dma_segment_t sg;
    851 	bus_size_t len;
    852 	fcparam *fcp;
    853 	int rs, i;
    854 
    855 	if (isp->isp_rquest_dma)	/* been here before? */
    856 		return (0);
    857 
    858 	len = isp->isp_maxcmds * sizeof (XS_T *);
    859 	isp->isp_xflist = (XS_T **) malloc(len, M_DEVBUF, M_WAITOK);
    860 	if (isp->isp_xflist == NULL) {
    861 		isp_prt(isp, ISP_LOGERR, "cannot malloc xflist array");
    862 		return (1);
    863 	}
    864 	memset(isp->isp_xflist, 0, len);
    865 	len = isp->isp_maxcmds * sizeof (bus_dmamap_t);
    866 	pcs->pci_xfer_dmap = (bus_dmamap_t *) malloc(len, M_DEVBUF, M_WAITOK);
    867 	if (pcs->pci_xfer_dmap == NULL) {
    868 		free(isp->isp_xflist, M_DEVBUF);
    869 		isp->isp_xflist = NULL;
    870 		isp_prt(isp, ISP_LOGERR, "cannot malloc dma map array");
    871 		return (1);
    872 	}
    873 	for (i = 0; i < isp->isp_maxcmds; i++) {
    874 		if (bus_dmamap_create(dmat, MAXPHYS, (MAXPHYS / PAGE_SIZE) + 1,
    875 		    MAXPHYS, 0, BUS_DMA_NOWAIT, &pcs->pci_xfer_dmap[i])) {
    876 			isp_prt(isp, ISP_LOGERR, "cannot create dma maps");
    877 			break;
    878 		}
    879 	}
    880 	if (i < isp->isp_maxcmds) {
    881 		while (--i >= 0) {
    882 			bus_dmamap_destroy(dmat, pcs->pci_xfer_dmap[i]);
    883 		}
    884 		free(isp->isp_xflist, M_DEVBUF);
    885 		free(pcs->pci_xfer_dmap, M_DEVBUF);
    886 		isp->isp_xflist = NULL;
    887 		pcs->pci_xfer_dmap = NULL;
    888 		return (1);
    889 	}
    890 
    891 	/*
    892 	 * Allocate and map the request queue.
    893 	 */
    894 	len = ISP_QUEUE_SIZE(RQUEST_QUEUE_LEN(isp));
    895 	if (bus_dmamem_alloc(dmat, len, PAGE_SIZE, 0, &sg, 1, &rs,
    896 			     BUS_DMA_NOWAIT) ||
    897 	    bus_dmamem_map(pcs->pci_dmat, &sg, rs, len,
    898 	    (caddr_t *)&isp->isp_rquest, BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) {
    899 		goto dmafail;
    900 	}
    901 
    902 	if (bus_dmamap_create(dmat, len, 1, len, 0, BUS_DMA_NOWAIT,
    903 	    &pcs->pci_rquest_dmap) || bus_dmamap_load(dmat,
    904 	    pcs->pci_rquest_dmap, (caddr_t)isp->isp_rquest, len, NULL,
    905 	    BUS_DMA_NOWAIT)) {
    906 		goto dmafail;
    907 	}
    908 
    909 	isp->isp_rquest_dma = pcs->pci_rquest_dmap->dm_segs[0].ds_addr;
    910 
    911 	/*
    912 	 * Allocate and map the result queue.
    913 	 */
    914 	len = ISP_QUEUE_SIZE(RESULT_QUEUE_LEN(isp));
    915 	if (bus_dmamem_alloc(dmat, len, PAGE_SIZE, 0, &sg, 1, &rs,
    916 			     BUS_DMA_NOWAIT) ||
    917 	    bus_dmamem_map(dmat, &sg, rs, len, (caddr_t *)&isp->isp_result,
    918 	    BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) {
    919 		goto dmafail;
    920 	}
    921 	if (bus_dmamap_create(dmat, len, 1, len, 0, BUS_DMA_NOWAIT,
    922 	    &pcs->pci_result_dmap) || bus_dmamap_load(pcs->pci_dmat,
    923 	    pcs->pci_result_dmap, (caddr_t)isp->isp_result, len, NULL,
    924 	    BUS_DMA_NOWAIT)) {
    925 		goto dmafail;
    926 	}
    927 	isp->isp_result_dma = pcs->pci_result_dmap->dm_segs[0].ds_addr;
    928 
    929 	if (IS_SCSI(isp)) {
    930 		return (0);
    931 	}
    932 
    933 	fcp = isp->isp_param;
    934 	len = ISP2100_SCRLEN;
    935 	if (bus_dmamem_alloc(dmat, len, PAGE_SIZE, 0, &sg, 1, &rs,
    936 			     BUS_DMA_NOWAIT) ||
    937 	    bus_dmamem_map(dmat, &sg, rs, len, (caddr_t *)&fcp->isp_scratch,
    938 	    BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) {
    939 		goto dmafail;
    940 	}
    941 	if (bus_dmamap_create(dmat, len, 1, len, 0, BUS_DMA_NOWAIT,
    942 	    &pcs->pci_scratch_dmap) || bus_dmamap_load(dmat,
    943 	    pcs->pci_scratch_dmap, (caddr_t)fcp->isp_scratch, len, NULL,
    944 	    BUS_DMA_NOWAIT)) {
    945 		goto dmafail;
    946 	}
    947 	fcp->isp_scdma = pcs->pci_scratch_dmap->dm_segs[0].ds_addr;
    948 	return (0);
    949 dmafail:
    950 	isp_prt(isp, ISP_LOGERR, "mailbox dma setup failure");
    951 	for (i = 0; i < isp->isp_maxcmds; i++) {
    952 		bus_dmamap_destroy(dmat, pcs->pci_xfer_dmap[i]);
    953 	}
    954 	free(isp->isp_xflist, M_DEVBUF);
    955 	free(pcs->pci_xfer_dmap, M_DEVBUF);
    956 	isp->isp_xflist = NULL;
    957 	pcs->pci_xfer_dmap = NULL;
    958 	return (1);
    959 }
    960 
    961 static int
    962 isp_pci_dmasetup(struct ispsoftc *isp, struct scsipi_xfer *xs, ispreq_t *rq,
    963     u_int16_t *iptrp, u_int16_t optr)
    964 {
    965 	struct isp_pcisoftc *pcs = (struct isp_pcisoftc *)isp;
    966 	bus_dmamap_t dmap;
    967 	ispcontreq_t *crq;
    968 	int segcnt, seg, error, ovseg, seglim, drq;
    969 
    970 	dmap = pcs->pci_xfer_dmap[isp_handle_index(rq->req_handle)];
    971 
    972 	if (xs->datalen == 0) {
    973 		rq->req_seg_count = 1;
    974 		goto mbxsync;
    975 	}
    976 	if (xs->xs_control & XS_CTL_DATA_IN) {
    977 		drq = REQFLAG_DATA_IN;
    978 	} else {
    979 		drq = REQFLAG_DATA_OUT;
    980 	}
    981 
    982 	if (IS_FC(isp)) {
    983 		seglim = ISP_RQDSEG_T2;
    984 		((ispreqt2_t *)rq)->req_totalcnt = xs->datalen;
    985 		((ispreqt2_t *)rq)->req_flags |= drq;
    986 	} else {
    987 		rq->req_flags |= drq;
    988 		if (XS_CDBLEN(xs) > 12) {
    989 			seglim = 0;
    990 		} else {
    991 			seglim = ISP_RQDSEG;
    992 		}
    993 	}
    994 	error = bus_dmamap_load(pcs->pci_dmat, dmap, xs->data, xs->datalen,
    995 	    NULL, ((xs->xs_control & XS_CTL_NOSLEEP) ?
    996 	    BUS_DMA_NOWAIT : BUS_DMA_WAITOK) | BUS_DMA_STREAMING |
    997 	    ((xs->xs_control & XS_CTL_DATA_IN) ? BUS_DMA_READ : BUS_DMA_WRITE));
    998 	if (error) {
    999 		XS_SETERR(xs, HBA_BOTCH);
   1000 		return (CMD_COMPLETE);
   1001 	}
   1002 
   1003 	segcnt = dmap->dm_nsegs;
   1004 
   1005 	isp_prt(isp, ISP_LOGDEBUG2, "%d byte %s %p in %d segs",
   1006 	    xs->datalen, (xs->xs_control & XS_CTL_DATA_IN)? "read to" :
   1007 	    "write from", xs->data, segcnt);
   1008 
   1009 	for (seg = 0, rq->req_seg_count = 0;
   1010 	    seglim && seg < segcnt && rq->req_seg_count < seglim;
   1011 	    seg++, rq->req_seg_count++) {
   1012 		if (IS_FC(isp)) {
   1013 			ispreqt2_t *rq2 = (ispreqt2_t *)rq;
   1014 #if	_BYTE_ORDER == _BIG_ENDIAN
   1015 			rq2->req_dataseg[rq2->req_seg_count].ds_count =
   1016 			    bswap32(dmap->dm_segs[seg].ds_len);
   1017 			rq2->req_dataseg[rq2->req_seg_count].ds_base =
   1018 			    bswap32(dmap->dm_segs[seg].ds_addr);
   1019 #else
   1020 			rq2->req_dataseg[rq2->req_seg_count].ds_count =
   1021 			    dmap->dm_segs[seg].ds_len;
   1022 			rq2->req_dataseg[rq2->req_seg_count].ds_base =
   1023 			    dmap->dm_segs[seg].ds_addr;
   1024 #endif
   1025 		} else {
   1026 #if	_BYTE_ORDER == _BIG_ENDIAN
   1027 			rq->req_dataseg[rq->req_seg_count].ds_count =
   1028 			    bswap32(dmap->dm_segs[seg].ds_len);
   1029 			rq->req_dataseg[rq->req_seg_count].ds_base =
   1030 			    bswap32(dmap->dm_segs[seg].ds_addr);
   1031 #else
   1032 			rq->req_dataseg[rq->req_seg_count].ds_count =
   1033 			    dmap->dm_segs[seg].ds_len;
   1034 			rq->req_dataseg[rq->req_seg_count].ds_base =
   1035 			    dmap->dm_segs[seg].ds_addr;
   1036 #endif
   1037 		}
   1038 		isp_prt(isp, ISP_LOGDEBUG2, "seg0.[%d]={0x%lx,%lu}",
   1039 		    rq->req_seg_count, (long) dmap->dm_segs[seg].ds_addr,
   1040 		    (unsigned long) dmap->dm_segs[seg].ds_len);
   1041 	}
   1042 
   1043 	if (seg == segcnt)
   1044 		goto dmasync;
   1045 
   1046 	do {
   1047 		crq = (ispcontreq_t *) ISP_QUEUE_ENTRY(isp->isp_rquest, *iptrp);
   1048 		*iptrp = ISP_NXT_QENTRY(*iptrp, RQUEST_QUEUE_LEN(isp));
   1049 		if (*iptrp == optr) {
   1050 			isp_prt(isp, ISP_LOGDEBUG0, "Request Queue Overflow++");
   1051 			bus_dmamap_unload(pcs->pci_dmat, dmap);
   1052 			XS_SETERR(xs, HBA_BOTCH);
   1053 			return (CMD_EAGAIN);
   1054 		}
   1055 		rq->req_header.rqs_entry_count++;
   1056 		memset((void *)crq, 0, sizeof (*crq));
   1057 		crq->req_header.rqs_entry_count = 1;
   1058 		crq->req_header.rqs_entry_type = RQSTYPE_DATASEG;
   1059 
   1060 		for (ovseg = 0; seg < segcnt && ovseg < ISP_CDSEG;
   1061 		    rq->req_seg_count++, seg++, ovseg++) {
   1062 #if	_BYTE_ORDER == _BIG_ENDIAN
   1063 			crq->req_dataseg[ovseg].ds_count =
   1064 			    bswap32(dmap->dm_segs[seg].ds_len);
   1065 			crq->req_dataseg[ovseg].ds_base =
   1066 			    bswap32(dmap->dm_segs[seg].ds_addr);
   1067 #else
   1068 			crq->req_dataseg[ovseg].ds_count =
   1069 			    dmap->dm_segs[seg].ds_len;
   1070 			crq->req_dataseg[ovseg].ds_base =
   1071 			    dmap->dm_segs[seg].ds_addr;
   1072 #endif
   1073 			isp_prt(isp, ISP_LOGDEBUG2, "seg%d.[%d]={0x%lx,%lu}",
   1074 			    rq->req_header.rqs_entry_count - 1,
   1075 			    rq->req_seg_count, (long)dmap->dm_segs[seg].ds_addr,
   1076 			    (unsigned long) dmap->dm_segs[seg].ds_len);
   1077 		}
   1078 	} while (seg < segcnt);
   1079 
   1080 
   1081 dmasync:
   1082 	bus_dmamap_sync(pcs->pci_dmat, dmap, 0, dmap->dm_mapsize,
   1083 	    (xs->xs_control & XS_CTL_DATA_IN) ?  BUS_DMASYNC_PREREAD :
   1084 	    BUS_DMASYNC_PREWRITE);
   1085 
   1086 mbxsync:
   1087 	ISP_SWIZZLE_REQUEST(isp, rq);
   1088 	bus_dmamap_sync(pcs->pci_dmat, pcs->pci_rquest_dmap, 0,
   1089 	    pcs->pci_rquest_dmap->dm_mapsize, BUS_DMASYNC_PREWRITE);
   1090 	return (CMD_QUEUED);
   1091 }
   1092 
   1093 static int
   1094 isp_pci_intr(void *arg)
   1095 {
   1096 	u_int16_t isr, sema, mbox;
   1097 	struct ispsoftc *isp = arg;
   1098 
   1099 	isp->isp_intcnt++;
   1100 	if (ISP_READ_ISR(isp, &isr, &sema, &mbox) == 0) {
   1101 		isp->isp_intbogus++;
   1102 		return (0);
   1103 	} else {
   1104 		struct isp_pcisoftc *pcs = (struct isp_pcisoftc *)arg;
   1105 		bus_dmamap_sync(pcs->pci_dmat, pcs->pci_result_dmap, 0,
   1106 		    pcs->pci_result_dmap->dm_mapsize, BUS_DMASYNC_POSTREAD);
   1107 		isp->isp_osinfo.onintstack = 1;
   1108 		isp_intr(isp, isr, sema, mbox);
   1109 		isp->isp_osinfo.onintstack = 0;
   1110 		return (1);
   1111 	}
   1112 }
   1113 
   1114 static void
   1115 isp_pci_dmateardown(struct ispsoftc *isp, XS_T *xs, u_int16_t handle)
   1116 {
   1117 	struct isp_pcisoftc *pcs = (struct isp_pcisoftc *)isp;
   1118 	bus_dmamap_t dmap = pcs->pci_xfer_dmap[isp_handle_index(handle)];
   1119 	bus_dmamap_sync(pcs->pci_dmat, dmap, 0, dmap->dm_mapsize,
   1120 	    xs->xs_control & XS_CTL_DATA_IN ?
   1121 	    BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE);
   1122 	bus_dmamap_unload(pcs->pci_dmat, dmap);
   1123 }
   1124 
   1125 static void
   1126 isp_pci_reset1(struct ispsoftc *isp)
   1127 {
   1128 	/* Make sure the BIOS is disabled */
   1129 	isp_pci_wr_reg(isp, HCCR, PCI_HCCR_CMD_BIOS);
   1130 }
   1131 
   1132 static void
   1133 isp_pci_dumpregs(struct ispsoftc *isp, const char *msg)
   1134 {
   1135 	struct isp_pcisoftc *pcs = (struct isp_pcisoftc *)isp;
   1136 	if (msg)
   1137 		printf("%s: %s\n", isp->isp_name, msg);
   1138 	if (IS_SCSI(isp))
   1139 		printf("    biu_conf1=%x", ISP_READ(isp, BIU_CONF1));
   1140 	else
   1141 		printf("    biu_csr=%x", ISP_READ(isp, BIU2100_CSR));
   1142 	printf(" biu_icr=%x biu_isr=%x biu_sema=%x ", ISP_READ(isp, BIU_ICR),
   1143 	    ISP_READ(isp, BIU_ISR), ISP_READ(isp, BIU_SEMA));
   1144 	printf("risc_hccr=%x\n", ISP_READ(isp, HCCR));
   1145 
   1146 
   1147 	if (IS_SCSI(isp)) {
   1148 		ISP_WRITE(isp, HCCR, HCCR_CMD_PAUSE);
   1149 		printf("    cdma_conf=%x cdma_sts=%x cdma_fifostat=%x\n",
   1150 			ISP_READ(isp, CDMA_CONF), ISP_READ(isp, CDMA_STATUS),
   1151 			ISP_READ(isp, CDMA_FIFO_STS));
   1152 		printf("    ddma_conf=%x ddma_sts=%x ddma_fifostat=%x\n",
   1153 			ISP_READ(isp, DDMA_CONF), ISP_READ(isp, DDMA_STATUS),
   1154 			ISP_READ(isp, DDMA_FIFO_STS));
   1155 		printf("    sxp_int=%x sxp_gross=%x sxp(scsi_ctrl)=%x\n",
   1156 			ISP_READ(isp, SXP_INTERRUPT),
   1157 			ISP_READ(isp, SXP_GROSS_ERR),
   1158 			ISP_READ(isp, SXP_PINS_CTRL));
   1159 		ISP_WRITE(isp, HCCR, HCCR_CMD_RELEASE);
   1160 	}
   1161 	printf("    mbox regs: %x %x %x %x %x\n",
   1162 	    ISP_READ(isp, OUTMAILBOX0), ISP_READ(isp, OUTMAILBOX1),
   1163 	    ISP_READ(isp, OUTMAILBOX2), ISP_READ(isp, OUTMAILBOX3),
   1164 	    ISP_READ(isp, OUTMAILBOX4));
   1165 	printf("    PCI Status Command/Status=%x\n",
   1166 	    pci_conf_read(pcs->pci_pc, pcs->pci_tag, PCI_COMMAND_STATUS_REG));
   1167 }
   1168