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isp_pci.c revision 1.68
      1 /* $NetBSD: isp_pci.c,v 1.68 2001/03/14 05:47:56 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 isp_pci_mbxdma(struct ispsoftc *);
     73 static int isp_pci_dmasetup(struct ispsoftc *, XS_T *, ispreq_t *,
     74     u_int16_t *, u_int16_t);
     75 static void isp_pci_dmateardown(struct ispsoftc *, XS_T *, u_int16_t);
     76 static void isp_pci_reset1(struct ispsoftc *);
     77 static void isp_pci_dumpregs(struct ispsoftc *, const char *);
     78 static int isp_pci_intr(void *);
     79 
     80 #if	defined(ISP_DISABLE_1020_SUPPORT)
     81 #define	ISP_1040_RISC_CODE	NULL
     82 #else
     83 #define	ISP_1040_RISC_CODE	isp_1040_risc_code
     84 #include <dev/microcode/isp/asm_1040.h>
     85 #endif
     86 
     87 #if	defined(ISP_DISABLE_1080_SUPPORT)
     88 #define	ISP_1080_RISC_CODE	NULL
     89 #else
     90 #define	ISP_1080_RISC_CODE	isp_1080_risc_code
     91 #include <dev/microcode/isp/asm_1080.h>
     92 #endif
     93 
     94 #if	defined(ISP_DISABLE_12160_SUPPORT)
     95 #define	ISP_12160_RISC_CODE	NULL
     96 #else
     97 #define	ISP_12160_RISC_CODE	isp_12160_risc_code
     98 #include <dev/microcode/isp/asm_12160.h>
     99 #endif
    100 
    101 #if	defined(ISP_DISABLE_2100_SUPPORT)
    102 #define	ISP_2100_RISC_CODE	NULL
    103 #else
    104 #define	ISP_2100_RISC_CODE	isp_2100_risc_code
    105 #include <dev/microcode/isp/asm_2100.h>
    106 #endif
    107 
    108 #if	defined(ISP_DISABLE_2200_SUPPORT)
    109 #define	ISP_2200_RISC_CODE	NULL
    110 #else
    111 #define	ISP_2200_RISC_CODE	isp_2200_risc_code
    112 #include <dev/microcode/isp/asm_2200.h>
    113 #endif
    114 
    115 #ifndef	ISP_DISABLE_1020_SUPPORT
    116 static struct ispmdvec mdvec = {
    117 	isp_pci_rd_reg,
    118 	isp_pci_wr_reg,
    119 	isp_pci_mbxdma,
    120 	isp_pci_dmasetup,
    121 	isp_pci_dmateardown,
    122 	NULL,
    123 	isp_pci_reset1,
    124 	isp_pci_dumpregs,
    125 	ISP_1040_RISC_CODE,
    126 	BIU_BURST_ENABLE|BIU_PCI_CONF1_FIFO_64
    127 };
    128 #endif
    129 
    130 #ifndef	ISP_DISABLE_1080_SUPPORT
    131 static struct ispmdvec mdvec_1080 = {
    132 	isp_pci_rd_reg_1080,
    133 	isp_pci_wr_reg_1080,
    134 	isp_pci_mbxdma,
    135 	isp_pci_dmasetup,
    136 	isp_pci_dmateardown,
    137 	NULL,
    138 	isp_pci_reset1,
    139 	isp_pci_dumpregs,
    140 	ISP_1080_RISC_CODE,
    141 	BIU_BURST_ENABLE|BIU_PCI_CONF1_FIFO_64
    142 };
    143 #endif
    144 
    145 #ifndef	ISP_DISABLE_12160_SUPPORT
    146 static struct ispmdvec mdvec_12160 = {
    147 	isp_pci_rd_reg_1080,
    148 	isp_pci_wr_reg_1080,
    149 	isp_pci_mbxdma,
    150 	isp_pci_dmasetup,
    151 	isp_pci_dmateardown,
    152 	NULL,
    153 	isp_pci_reset1,
    154 	isp_pci_dumpregs,
    155 	ISP_12160_RISC_CODE,
    156 	BIU_BURST_ENABLE|BIU_PCI_CONF1_FIFO_64
    157 };
    158 #endif
    159 
    160 #ifndef	ISP_DISABLE_2100_SUPPORT
    161 static struct ispmdvec mdvec_2100 = {
    162 	isp_pci_rd_reg,
    163 	isp_pci_wr_reg,
    164 	isp_pci_mbxdma,
    165 	isp_pci_dmasetup,
    166 	isp_pci_dmateardown,
    167 	NULL,
    168 	isp_pci_reset1,
    169 	isp_pci_dumpregs,
    170 	ISP_2100_RISC_CODE
    171 };
    172 #endif
    173 
    174 #ifndef	ISP_DISABLE_2200_SUPPORT
    175 static struct ispmdvec mdvec_2200 = {
    176 	isp_pci_rd_reg,
    177 	isp_pci_wr_reg,
    178 	isp_pci_mbxdma,
    179 	isp_pci_dmasetup,
    180 	isp_pci_dmateardown,
    181 	NULL,
    182 	isp_pci_reset1,
    183 	isp_pci_dumpregs,
    184 	ISP_2200_RISC_CODE
    185 };
    186 #endif
    187 
    188 #ifndef	PCI_VENDOR_QLOGIC
    189 #define	PCI_VENDOR_QLOGIC	0x1077
    190 #endif
    191 
    192 #ifndef	PCI_PRODUCT_QLOGIC_ISP1020
    193 #define	PCI_PRODUCT_QLOGIC_ISP1020	0x1020
    194 #endif
    195 
    196 #ifndef	PCI_PRODUCT_QLOGIC_ISP1080
    197 #define	PCI_PRODUCT_QLOGIC_ISP1080	0x1080
    198 #endif
    199 
    200 #ifndef	PCI_PRODUCT_QLOGIC_ISP1240
    201 #define	PCI_PRODUCT_QLOGIC_ISP1240	0x1240
    202 #endif
    203 
    204 #ifndef	PCI_PRODUCT_QLOGIC_ISP1280
    205 #define	PCI_PRODUCT_QLOGIC_ISP1280	0x1280
    206 #endif
    207 
    208 #ifndef	PCI_PRODUCT_QLOGIC_ISP12160
    209 #define	PCI_PRODUCT_QLOGIC_ISP12160	0x1216
    210 #endif
    211 
    212 #ifndef	PCI_PRODUCT_QLOGIC_ISP2100
    213 #define	PCI_PRODUCT_QLOGIC_ISP2100	0x2100
    214 #endif
    215 
    216 #ifndef	PCI_PRODUCT_QLOGIC_ISP2200
    217 #define	PCI_PRODUCT_QLOGIC_ISP2200	0x2200
    218 #endif
    219 
    220 #define	PCI_QLOGIC_ISP	((PCI_PRODUCT_QLOGIC_ISP1020 << 16) | PCI_VENDOR_QLOGIC)
    221 
    222 #define	PCI_QLOGIC_ISP1080	\
    223 	((PCI_PRODUCT_QLOGIC_ISP1080 << 16) | PCI_VENDOR_QLOGIC)
    224 
    225 #define	PCI_QLOGIC_ISP1240	\
    226 	((PCI_PRODUCT_QLOGIC_ISP1240 << 16) | PCI_VENDOR_QLOGIC)
    227 
    228 #define	PCI_QLOGIC_ISP1280	\
    229 	((PCI_PRODUCT_QLOGIC_ISP1280 << 16) | PCI_VENDOR_QLOGIC)
    230 
    231 #define	PCI_QLOGIC_ISP12160	\
    232 	((PCI_PRODUCT_QLOGIC_ISP12160 << 16) | PCI_VENDOR_QLOGIC)
    233 
    234 #define	PCI_QLOGIC_ISP2100	\
    235 	((PCI_PRODUCT_QLOGIC_ISP2100 << 16) | PCI_VENDOR_QLOGIC)
    236 
    237 #define	PCI_QLOGIC_ISP2200	\
    238 	((PCI_PRODUCT_QLOGIC_ISP2200 << 16) | PCI_VENDOR_QLOGIC)
    239 
    240 #define	IO_MAP_REG	0x10
    241 #define	MEM_MAP_REG	0x14
    242 #define	PCIR_ROMADDR	0x30
    243 
    244 #define	PCI_DFLT_LTNCY	0x40
    245 #define	PCI_DFLT_LNSZ	0x10
    246 
    247 
    248 static int isp_pci_probe(struct device *, struct cfdata *, void *);
    249 static void isp_pci_attach(struct device *, struct device *, void *);
    250 
    251 struct isp_pcisoftc {
    252 	struct ispsoftc		pci_isp;
    253 	pci_chipset_tag_t	pci_pc;
    254 	pcitag_t		pci_tag;
    255 	bus_space_tag_t		pci_st;
    256 	bus_space_handle_t	pci_sh;
    257 	bus_dma_tag_t		pci_dmat;
    258 	bus_dmamap_t		pci_scratch_dmap;	/* for fcp only */
    259 	bus_dmamap_t		pci_rquest_dmap;
    260 	bus_dmamap_t		pci_result_dmap;
    261 	bus_dmamap_t		*pci_xfer_dmap;
    262 	void *			pci_ih;
    263 	int16_t			pci_poff[_NREG_BLKS];
    264 };
    265 
    266 struct cfattach isp_pci_ca = {
    267 	sizeof (struct isp_pcisoftc), isp_pci_probe, isp_pci_attach
    268 };
    269 
    270 #ifdef	DEBUG
    271 const char vstring[] =
    272     "Qlogic ISP Driver, NetBSD (pci) Platform Version %d.%d Core Version %d.%d";
    273 #endif
    274 
    275 static int
    276 isp_pci_probe(struct device *parent, struct cfdata *match, void *aux)
    277 {
    278 	struct pci_attach_args *pa = aux;
    279 	switch (pa->pa_id) {
    280 #ifndef	ISP_DISABLE_1020_SUPPORT
    281 	case PCI_QLOGIC_ISP:
    282 		return (1);
    283 #endif
    284 #ifndef	ISP_DISABLE_1080_SUPPORT
    285 	case PCI_QLOGIC_ISP1080:
    286 	case PCI_QLOGIC_ISP1240:
    287 	case PCI_QLOGIC_ISP1280:
    288 		return (1);
    289 #endif
    290 #ifndef	ISP_DISABLE_12160_SUPPORT
    291 	case PCI_QLOGIC_ISP12160:
    292 		return (1);
    293 #endif
    294 #ifndef	ISP_DISABLE_2100_SUPPORT
    295 	case PCI_QLOGIC_ISP2100:
    296 		return (1);
    297 #endif
    298 #ifndef	ISP_DISABLE_2200_SUPPORT
    299 	case PCI_QLOGIC_ISP2200:
    300 		return (1);
    301 #endif
    302 	default:
    303 		return (0);
    304 	}
    305 }
    306 
    307 
    308 static void
    309 isp_pci_attach(struct device *parent, struct device *self, void *aux)
    310 {
    311 #ifdef	DEBUG
    312 	static char oneshot = 1;
    313 #endif
    314 	static const char nomem[] = "%s: no mem for sdparam table\n";
    315 	u_int32_t data, rev, linesz = PCI_DFLT_LNSZ;
    316 	struct pci_attach_args *pa = aux;
    317 	struct isp_pcisoftc *pcs = (struct isp_pcisoftc *) self;
    318 	struct ispsoftc *isp = &pcs->pci_isp;
    319 	bus_space_tag_t st, iot, memt;
    320 	bus_space_handle_t sh, ioh, memh;
    321 	pci_intr_handle_t ih;
    322 	const char *intrstr;
    323 	int ioh_valid, memh_valid;
    324 
    325 	ioh_valid = (pci_mapreg_map(pa, IO_MAP_REG,
    326 	    PCI_MAPREG_TYPE_IO, 0,
    327 	    &iot, &ioh, NULL, NULL) == 0);
    328 	memh_valid = (pci_mapreg_map(pa, MEM_MAP_REG,
    329 	    PCI_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_32BIT, 0,
    330 	    &memt, &memh, NULL, NULL) == 0);
    331 	if (memh_valid) {
    332 		st = memt;
    333 		sh = memh;
    334 	} else if (ioh_valid) {
    335 		st = iot;
    336 		sh = ioh;
    337 	} else {
    338 		printf(": unable to map device registers\n");
    339 		return;
    340 	}
    341 	printf("\n");
    342 
    343 	pcs->pci_st = st;
    344 	pcs->pci_sh = sh;
    345 	pcs->pci_dmat = pa->pa_dmat;
    346 	pcs->pci_pc = pa->pa_pc;
    347 	pcs->pci_tag = pa->pa_tag;
    348 	pcs->pci_poff[BIU_BLOCK >> _BLK_REG_SHFT] = BIU_REGS_OFF;
    349 	pcs->pci_poff[MBOX_BLOCK >> _BLK_REG_SHFT] = PCI_MBOX_REGS_OFF;
    350 	pcs->pci_poff[SXP_BLOCK >> _BLK_REG_SHFT] = PCI_SXP_REGS_OFF;
    351 	pcs->pci_poff[RISC_BLOCK >> _BLK_REG_SHFT] = PCI_RISC_REGS_OFF;
    352 	pcs->pci_poff[DMA_BLOCK >> _BLK_REG_SHFT] = DMA_REGS_OFF;
    353 	rev = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_CLASS_REG) & 0xff;
    354 
    355 #ifndef	ISP_DISABLE_1020_SUPPORT
    356 	if (pa->pa_id == PCI_QLOGIC_ISP) {
    357 		isp->isp_mdvec = &mdvec;
    358 		isp->isp_type = ISP_HA_SCSI_UNKNOWN;
    359 		isp->isp_param = malloc(sizeof (sdparam), M_DEVBUF, M_NOWAIT);
    360 		if (isp->isp_param == NULL) {
    361 			printf(nomem, isp->isp_name);
    362 			return;
    363 		}
    364 		bzero(isp->isp_param, sizeof (sdparam));
    365 	}
    366 #endif
    367 #ifndef	ISP_DISABLE_1080_SUPPORT
    368 	if (pa->pa_id == PCI_QLOGIC_ISP1080) {
    369 		isp->isp_mdvec = &mdvec_1080;
    370 		isp->isp_type = ISP_HA_SCSI_1080;
    371 		isp->isp_param = malloc(sizeof (sdparam), M_DEVBUF, M_NOWAIT);
    372 		if (isp->isp_param == NULL) {
    373 			printf(nomem, isp->isp_name);
    374 			return;
    375 		}
    376 		bzero(isp->isp_param, sizeof (sdparam));
    377 		pcs->pci_poff[DMA_BLOCK >> _BLK_REG_SHFT] =
    378 		    ISP1080_DMA_REGS_OFF;
    379 	}
    380 	if (pa->pa_id == PCI_QLOGIC_ISP1240) {
    381 		isp->isp_mdvec = &mdvec_1080;
    382 		isp->isp_type = ISP_HA_SCSI_1240;
    383 		isp->isp_param =
    384 		    malloc(2 * sizeof (sdparam), M_DEVBUF, M_NOWAIT);
    385 		if (isp->isp_param == NULL) {
    386 			printf(nomem, isp->isp_name);
    387 			return;
    388 		}
    389 		bzero(isp->isp_param, 2 * sizeof (sdparam));
    390 		pcs->pci_poff[DMA_BLOCK >> _BLK_REG_SHFT] =
    391 		    ISP1080_DMA_REGS_OFF;
    392 	}
    393 	if (pa->pa_id == PCI_QLOGIC_ISP1280) {
    394 		isp->isp_mdvec = &mdvec_1080;
    395 		isp->isp_type = ISP_HA_SCSI_1280;
    396 		isp->isp_param =
    397 		    malloc(2 * sizeof (sdparam), M_DEVBUF, M_NOWAIT);
    398 		if (isp->isp_param == NULL) {
    399 			printf(nomem, isp->isp_name);
    400 			return;
    401 		}
    402 		bzero(isp->isp_param, 2 * sizeof (sdparam));
    403 		pcs->pci_poff[DMA_BLOCK >> _BLK_REG_SHFT] =
    404 		    ISP1080_DMA_REGS_OFF;
    405 	}
    406 #endif
    407 #ifndef	ISP_DISABLE_12160_SUPPORT
    408 	if (pa->pa_id == PCI_QLOGIC_ISP12160) {
    409 		isp->isp_mdvec = &mdvec_12160;
    410 		isp->isp_type = ISP_HA_SCSI_12160;
    411 		isp->isp_param =
    412 		    malloc(2 * sizeof (sdparam), M_DEVBUF, M_NOWAIT);
    413 		if (isp->isp_param == NULL) {
    414 			printf(nomem, isp->isp_name);
    415 			return;
    416 		}
    417 		bzero(isp->isp_param, 2 * sizeof (sdparam));
    418 		pcs->pci_poff[DMA_BLOCK >> _BLK_REG_SHFT] =
    419 		    ISP1080_DMA_REGS_OFF;
    420 	}
    421 #endif
    422 #ifndef	ISP_DISABLE_2100_SUPPORT
    423 	if (pa->pa_id == PCI_QLOGIC_ISP2100) {
    424 		isp->isp_mdvec = &mdvec_2100;
    425 		isp->isp_type = ISP_HA_FC_2100;
    426 		isp->isp_param = malloc(sizeof (fcparam), M_DEVBUF, M_NOWAIT);
    427 		if (isp->isp_param == NULL) {
    428 			printf(nomem, isp->isp_name);
    429 			return;
    430 		}
    431 		bzero(isp->isp_param, sizeof (fcparam));
    432 		pcs->pci_poff[MBOX_BLOCK >> _BLK_REG_SHFT] =
    433 		    PCI_MBOX_REGS2100_OFF;
    434 		if (rev < 3) {
    435 			/*
    436 			 * XXX: Need to get the actual revision
    437 			 * XXX: number of the 2100 FB. At any rate,
    438 			 * XXX: lower cache line size for early revision
    439 			 * XXX; boards.
    440 			 */
    441 			linesz = 1;
    442 		}
    443 	}
    444 #endif
    445 #ifndef	ISP_DISABLE_2200_SUPPORT
    446 	if (pa->pa_id == PCI_QLOGIC_ISP2200) {
    447 		isp->isp_mdvec = &mdvec_2200;
    448 		isp->isp_type = ISP_HA_FC_2200;
    449 		isp->isp_param = malloc(sizeof (fcparam), M_DEVBUF, M_NOWAIT);
    450 		if (isp->isp_param == NULL) {
    451 			printf(nomem, isp->isp_name);
    452 			return;
    453 		}
    454 		bzero(isp->isp_param, sizeof (fcparam));
    455 		pcs->pci_poff[MBOX_BLOCK >> _BLK_REG_SHFT] =
    456 		    PCI_MBOX_REGS2100_OFF;
    457 		data = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_CLASS_REG);
    458 	}
    459 #endif
    460 	/*
    461 	 * Set up logging levels.
    462 	 */
    463 #ifdef	ISP_LOGDEFAULT
    464 	isp->isp_dblev = ISP_LOGDEFAULT;
    465 #else
    466 	isp->isp_dblev = ISP_LOGWARN|ISP_LOGERR;
    467 	if (bootverbose)
    468 		isp->isp_dblev |= ISP_LOGCONFIG|ISP_LOGINFO;
    469 #ifdef	SCSIDEBUG
    470 	isp->isp_dblev |= ISP_LOGDEBUG1|ISP_LOGDEBUG2;
    471 #endif
    472 #ifdef	DEBUG
    473 	isp->isp_dblev |= ISP_LOGDEBUG0;
    474 #endif
    475 #endif
    476 
    477 #ifdef	DEBUG
    478 	if (oneshot) {
    479 		oneshot = 0;
    480 		isp_prt(isp, ISP_LOGCONFIG, vstring,
    481 		    ISP_PLATFORM_VERSION_MAJOR, ISP_PLATFORM_VERSION_MINOR,
    482 		    ISP_CORE_VERSION_MAJOR, ISP_CORE_VERSION_MINOR);
    483 	}
    484 #endif
    485 
    486 	isp->isp_revision = rev;
    487 
    488 	/*
    489 	 * Make sure that command register set sanely.
    490 	 */
    491 	data = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG);
    492 	data |= PCI_COMMAND_MASTER_ENABLE | PCI_COMMAND_INVALIDATE_ENABLE;
    493 
    494 	/*
    495 	 * Not so sure about these- but I think it's important that they get
    496 	 * enabled......
    497 	 */
    498 	data |= PCI_COMMAND_PARITY_ENABLE | PCI_COMMAND_SERR_ENABLE;
    499 	pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, data);
    500 
    501 	/*
    502 	 * Make sure that the latency timer, cache line size,
    503 	 * and ROM is disabled.
    504 	 */
    505 	data = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_BHLC_REG);
    506 	data &= ~(PCI_LATTIMER_MASK << PCI_LATTIMER_SHIFT);
    507 	data &= ~(PCI_CACHELINE_MASK << PCI_CACHELINE_SHIFT);
    508 	data |= (PCI_DFLT_LTNCY	<< PCI_LATTIMER_SHIFT);
    509 	data |= (linesz << PCI_CACHELINE_SHIFT);
    510 	pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_BHLC_REG, data);
    511 
    512 	data = pci_conf_read(pa->pa_pc, pa->pa_tag, PCIR_ROMADDR);
    513 	data &= ~1;
    514 	pci_conf_write(pa->pa_pc, pa->pa_tag, PCIR_ROMADDR, data);
    515 
    516 	if (pci_intr_map(pa, &ih)) {
    517 		printf("%s: couldn't map interrupt\n", isp->isp_name);
    518 		free(isp->isp_param, M_DEVBUF);
    519 		return;
    520 	}
    521 	intrstr = pci_intr_string(pa->pa_pc, ih);
    522 	if (intrstr == NULL)
    523 		intrstr = "<I dunno>";
    524 	pcs->pci_ih = pci_intr_establish(pa->pa_pc, ih, IPL_BIO,
    525 	    isp_pci_intr, isp);
    526 	if (pcs->pci_ih == NULL) {
    527 		printf("%s: couldn't establish interrupt at %s\n",
    528 			isp->isp_name, intrstr);
    529 		free(isp->isp_param, M_DEVBUF);
    530 		return;
    531 	}
    532 
    533 	printf("%s: interrupting at %s\n", isp->isp_name, intrstr);
    534 
    535 	if (IS_FC(isp)) {
    536 		DEFAULT_NODEWWN(isp) = 0x400000007F000002;
    537 		DEFAULT_PORTWWN(isp) = 0x400000007F000002;
    538 	}
    539 
    540 	isp->isp_confopts = self->dv_cfdata->cf_flags;
    541 	isp->isp_role = ISP_DEFAULT_ROLES;
    542 	ISP_LOCK(isp);
    543 	isp->isp_osinfo.no_mbox_ints = 1;
    544 	isp_reset(isp);
    545 	if (isp->isp_state != ISP_RESETSTATE) {
    546 		ISP_UNLOCK(isp);
    547 		free(isp->isp_param, M_DEVBUF);
    548 		return;
    549 	}
    550 	ENABLE_INTS(isp);
    551 	isp_init(isp);
    552 	if (isp->isp_state != ISP_INITSTATE) {
    553 		isp_uninit(isp);
    554 		ISP_UNLOCK(isp);
    555 		free(isp->isp_param, M_DEVBUF);
    556 		return;
    557 	}
    558 	/*
    559 	 * Do platform attach.
    560 	 */
    561 	ISP_UNLOCK(isp);
    562 	isp_attach(isp);
    563 	if (isp->isp_state != ISP_RUNSTATE) {
    564 		ISP_LOCK(isp);
    565 		isp_uninit(isp);
    566 		free(isp->isp_param, M_DEVBUF);
    567 		ISP_UNLOCK(isp);
    568 	}
    569 }
    570 
    571 static u_int16_t
    572 isp_pci_rd_reg(struct ispsoftc *isp, int regoff)
    573 {
    574 	u_int16_t rv;
    575 	struct isp_pcisoftc *pcs = (struct isp_pcisoftc *) isp;
    576 	int offset, oldconf = 0;
    577 
    578 	if ((regoff & _BLK_REG_MASK) == SXP_BLOCK) {
    579 		/*
    580 		 * We will assume that someone has paused the RISC processor.
    581 		 */
    582 		oldconf = isp_pci_rd_reg(isp, BIU_CONF1);
    583 		isp_pci_wr_reg(isp, BIU_CONF1, oldconf | BIU_PCI_CONF1_SXP);
    584 		delay(250);
    585 	}
    586 	offset = pcs->pci_poff[(regoff & _BLK_REG_MASK) >> _BLK_REG_SHFT];
    587 	offset += (regoff & 0xff);
    588 	rv = bus_space_read_2(pcs->pci_st, pcs->pci_sh, offset);
    589 	if ((regoff & _BLK_REG_MASK) == SXP_BLOCK) {
    590 		isp_pci_wr_reg(isp, BIU_CONF1, oldconf);
    591 		delay(250);
    592 	}
    593 	return (rv);
    594 }
    595 
    596 static void
    597 isp_pci_wr_reg(struct ispsoftc *isp, int regoff, u_int16_t val)
    598 {
    599 	struct isp_pcisoftc *pcs = (struct isp_pcisoftc *) isp;
    600 	int offset, oldconf = 0;
    601 
    602 	if ((regoff & _BLK_REG_MASK) == SXP_BLOCK) {
    603 		/*
    604 		 * We will assume that someone has paused the RISC processor.
    605 		 */
    606 		oldconf = isp_pci_rd_reg(isp, BIU_CONF1);
    607 		isp_pci_wr_reg(isp, BIU_CONF1, oldconf | BIU_PCI_CONF1_SXP);
    608 		delay(250);
    609 	}
    610 	offset = pcs->pci_poff[(regoff & _BLK_REG_MASK) >> _BLK_REG_SHFT];
    611 	offset += (regoff & 0xff);
    612 	bus_space_write_2(pcs->pci_st, pcs->pci_sh, offset, val);
    613 	if ((regoff & _BLK_REG_MASK) == SXP_BLOCK) {
    614 		isp_pci_wr_reg(isp, BIU_CONF1, oldconf);
    615 		delay(250);
    616 	}
    617 }
    618 
    619 #if !(defined(ISP_DISABLE_1080_SUPPORT) && defined(ISP_DISABLE_12160_SUPPORT))
    620 static u_int16_t
    621 isp_pci_rd_reg_1080(struct ispsoftc *isp, int regoff)
    622 {
    623 	u_int16_t rv, oc = 0;
    624 	struct isp_pcisoftc *pcs = (struct isp_pcisoftc *) isp;
    625 	int offset;
    626 
    627 	if ((regoff & _BLK_REG_MASK) == SXP_BLOCK) {
    628 		u_int16_t tc;
    629 		/*
    630 		 * We will assume that someone has paused the RISC processor.
    631 		 */
    632 		oc = isp_pci_rd_reg(isp, BIU_CONF1);
    633 		tc = oc & ~BIU_PCI1080_CONF1_DMA;
    634 		if (IS_1280(isp)) {
    635 			if (regoff & SXP_BANK1_SELECT)
    636 				tc |= BIU_PCI1080_CONF1_SXP0;
    637 			else
    638 				tc |= BIU_PCI1080_CONF1_SXP1;
    639 		} else {
    640 			tc |= BIU_PCI1080_CONF1_SXP0;
    641 		}
    642 		isp_pci_wr_reg(isp, BIU_CONF1, tc);
    643 		delay(250);
    644 	} else if ((regoff & _BLK_REG_MASK) == DMA_BLOCK) {
    645 		oc = isp_pci_rd_reg(isp, BIU_CONF1);
    646 		isp_pci_wr_reg(isp, BIU_CONF1, oc | BIU_PCI1080_CONF1_DMA);
    647 		delay(250);
    648 	}
    649 	offset = pcs->pci_poff[(regoff & _BLK_REG_MASK) >> _BLK_REG_SHFT];
    650 	offset += (regoff & 0xff);
    651 	rv = bus_space_read_2(pcs->pci_st, pcs->pci_sh, offset);
    652 	/*
    653 	 * Okay, because BIU_CONF1 is always nonzero
    654 	 */
    655 	if (oc) {
    656 		isp_pci_wr_reg(isp, BIU_CONF1, oc);
    657 		delay(250);
    658 	}
    659 	return (rv);
    660 }
    661 
    662 static void
    663 isp_pci_wr_reg_1080(struct ispsoftc *isp, int regoff, u_int16_t val)
    664 {
    665 	u_int16_t oc = 0;
    666 	struct isp_pcisoftc *pcs = (struct isp_pcisoftc *) isp;
    667 	int offset;
    668 
    669 	if ((regoff & _BLK_REG_MASK) == SXP_BLOCK) {
    670 		u_int16_t tc;
    671 		/*
    672 		 * We will assume that someone has paused the RISC processor.
    673 		 */
    674 		oc = isp_pci_rd_reg(isp, BIU_CONF1);
    675 		tc = oc & ~BIU_PCI1080_CONF1_DMA;
    676 		if (IS_1280(isp)) {
    677 			if (regoff & SXP_BANK1_SELECT)
    678 				tc |= BIU_PCI1080_CONF1_SXP0;
    679 			else
    680 				tc |= BIU_PCI1080_CONF1_SXP1;
    681 		} else {
    682 			tc |= BIU_PCI1080_CONF1_SXP0;
    683 		}
    684 		isp_pci_wr_reg(isp, BIU_CONF1, tc);
    685 		delay(250);
    686 	} else if ((regoff & _BLK_REG_MASK) == DMA_BLOCK) {
    687 		oc = isp_pci_rd_reg(isp, BIU_CONF1);
    688 		isp_pci_wr_reg(isp, BIU_CONF1, oc | BIU_PCI1080_CONF1_DMA);
    689 		delay(250);
    690 	}
    691 	offset = pcs->pci_poff[(regoff & _BLK_REG_MASK) >> _BLK_REG_SHFT];
    692 	offset += (regoff & 0xff);
    693 	bus_space_write_2(pcs->pci_st, pcs->pci_sh, offset, val);
    694 	/*
    695 	 * Okay, because BIU_CONF1 is always nonzero
    696 	 */
    697 	if (oc) {
    698 		isp_pci_wr_reg(isp, BIU_CONF1, oc);
    699 		delay(250);
    700 	}
    701 }
    702 #endif
    703 
    704 static int
    705 isp_pci_mbxdma(struct ispsoftc *isp)
    706 {
    707 	struct isp_pcisoftc *pcs = (struct isp_pcisoftc *)isp;
    708 	bus_dma_tag_t dmat = pcs->pci_dmat;
    709 	bus_dma_segment_t sg;
    710 	bus_size_t len;
    711 	fcparam *fcp;
    712 	int rs, i;
    713 
    714 	if (isp->isp_rquest_dma)	/* been here before? */
    715 		return (0);
    716 
    717 	len = isp->isp_maxcmds * sizeof (XS_T);
    718 	isp->isp_xflist = (XS_T **) malloc(len, M_DEVBUF, M_WAITOK);
    719 	if (isp->isp_xflist == NULL) {
    720 		isp_prt(isp, ISP_LOGERR, "cannot malloc xflist array");
    721 		return (1);
    722 	}
    723 	bzero(isp->isp_xflist, len);
    724 	len = isp->isp_maxcmds * sizeof (bus_dmamap_t);
    725 	pcs->pci_xfer_dmap = (bus_dmamap_t *) malloc(len, M_DEVBUF, M_WAITOK);
    726 	if (pcs->pci_xfer_dmap == NULL) {
    727 		free(isp->isp_xflist, M_DEVBUF);
    728 		isp->isp_xflist = NULL;
    729 		isp_prt(isp, ISP_LOGERR, "cannot malloc dma map array");
    730 		return (1);
    731 	}
    732 	for (i = 0; i < isp->isp_maxcmds; i++) {
    733 		if (bus_dmamap_create(dmat, MAXPHYS, (MAXPHYS / PAGE_SIZE) + 1,
    734 		    MAXPHYS, 0, BUS_DMA_NOWAIT, &pcs->pci_xfer_dmap[i])) {
    735 			isp_prt(isp, ISP_LOGERR, "cannot create dma maps");
    736 			break;
    737 		}
    738 	}
    739 	if (i < isp->isp_maxcmds) {
    740 		while (--i >= 0) {
    741 			bus_dmamap_destroy(dmat, pcs->pci_xfer_dmap[i]);
    742 		}
    743 		free(isp->isp_xflist, M_DEVBUF);
    744 		free(pcs->pci_xfer_dmap, M_DEVBUF);
    745 		isp->isp_xflist = NULL;
    746 		pcs->pci_xfer_dmap = NULL;
    747 		return (1);
    748 	}
    749 
    750 	/*
    751 	 * Allocate and map the request queue.
    752 	 */
    753 	len = ISP_QUEUE_SIZE(RQUEST_QUEUE_LEN(isp));
    754 	if (bus_dmamem_alloc(dmat, len, PAGE_SIZE, 0, &sg, 1, &rs,
    755 			     BUS_DMA_NOWAIT) ||
    756 	    bus_dmamem_map(pcs->pci_dmat, &sg, rs, len,
    757 	    (caddr_t *)&isp->isp_rquest, BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) {
    758 		goto dmafail;
    759 	}
    760 
    761 	if (bus_dmamap_create(dmat, len, 1, len, 0, BUS_DMA_NOWAIT,
    762 	    &pcs->pci_rquest_dmap) || bus_dmamap_load(dmat,
    763 	    pcs->pci_rquest_dmap, (caddr_t)isp->isp_rquest, len, NULL,
    764 	    BUS_DMA_NOWAIT)) {
    765 		goto dmafail;
    766 	}
    767 
    768 	isp->isp_rquest_dma = pcs->pci_rquest_dmap->dm_segs[0].ds_addr;
    769 
    770 	/*
    771 	 * Allocate and map the result queue.
    772 	 */
    773 	len = ISP_QUEUE_SIZE(RESULT_QUEUE_LEN(isp));
    774 	if (bus_dmamem_alloc(dmat, len, PAGE_SIZE, 0, &sg, 1, &rs,
    775 			     BUS_DMA_NOWAIT) ||
    776 	    bus_dmamem_map(dmat, &sg, rs, len, (caddr_t *)&isp->isp_result,
    777 	    BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) {
    778 		goto dmafail;
    779 	}
    780 	if (bus_dmamap_create(dmat, len, 1, len, 0, BUS_DMA_NOWAIT,
    781 	    &pcs->pci_result_dmap) || bus_dmamap_load(pcs->pci_dmat,
    782 	    pcs->pci_result_dmap, (caddr_t)isp->isp_result, len, NULL,
    783 	    BUS_DMA_NOWAIT)) {
    784 		goto dmafail;
    785 	}
    786 	isp->isp_result_dma = pcs->pci_result_dmap->dm_segs[0].ds_addr;
    787 
    788 	if (IS_SCSI(isp)) {
    789 		return (0);
    790 	}
    791 
    792 	fcp = isp->isp_param;
    793 	len = ISP2100_SCRLEN;
    794 	if (bus_dmamem_alloc(dmat, len, PAGE_SIZE, 0, &sg, 1, &rs,
    795 			     BUS_DMA_NOWAIT) ||
    796 	    bus_dmamem_map(dmat, &sg, rs, len, (caddr_t *)&fcp->isp_scratch,
    797 	    BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) {
    798 		goto dmafail;
    799 	}
    800 	if (bus_dmamap_create(dmat, len, 1, len, 0, BUS_DMA_NOWAIT,
    801 	    &pcs->pci_scratch_dmap) || bus_dmamap_load(dmat,
    802 	    pcs->pci_scratch_dmap, (caddr_t)fcp->isp_scratch, len, NULL,
    803 	    BUS_DMA_NOWAIT)) {
    804 		goto dmafail;
    805 	}
    806 	fcp->isp_scdma = pcs->pci_scratch_dmap->dm_segs[0].ds_addr;
    807 	return (0);
    808 dmafail:
    809 	isp_prt(isp, ISP_LOGERR, "mailbox dma setup failure");
    810 	for (i = 0; i < isp->isp_maxcmds; i++) {
    811 		bus_dmamap_destroy(dmat, pcs->pci_xfer_dmap[i]);
    812 	}
    813 	free(isp->isp_xflist, M_DEVBUF);
    814 	free(pcs->pci_xfer_dmap, M_DEVBUF);
    815 	isp->isp_xflist = NULL;
    816 	pcs->pci_xfer_dmap = NULL;
    817 	return (1);
    818 }
    819 
    820 static int
    821 isp_pci_dmasetup(struct ispsoftc *isp, struct scsipi_xfer *xs, ispreq_t *rq,
    822     u_int16_t *iptrp, u_int16_t optr)
    823 {
    824 	struct isp_pcisoftc *pcs = (struct isp_pcisoftc *)isp;
    825 	bus_dmamap_t dmap;
    826 	ispcontreq_t *crq;
    827 	int segcnt, seg, error, ovseg, seglim, drq;
    828 
    829 	dmap = pcs->pci_xfer_dmap[isp_handle_index(rq->req_handle)];
    830 
    831 	if (xs->datalen == 0) {
    832 		rq->req_seg_count = 1;
    833 		goto mbxsync;
    834 	}
    835 	if (xs->xs_control & XS_CTL_DATA_IN) {
    836 		drq = REQFLAG_DATA_IN;
    837 	} else {
    838 		drq = REQFLAG_DATA_OUT;
    839 	}
    840 
    841 	if (IS_FC(isp)) {
    842 		seglim = ISP_RQDSEG_T2;
    843 		((ispreqt2_t *)rq)->req_totalcnt = xs->datalen;
    844 		((ispreqt2_t *)rq)->req_flags |= drq;
    845 	} else {
    846 		rq->req_flags |= drq;
    847 		if (XS_CDBLEN(xs) > 12) {
    848 			seglim = 0;
    849 		} else {
    850 			seglim = ISP_RQDSEG;
    851 		}
    852 	}
    853 	error = bus_dmamap_load(pcs->pci_dmat, dmap, xs->data, xs->datalen,
    854 	    NULL, ((xs->xs_control & XS_CTL_NOSLEEP) ?
    855 	    BUS_DMA_NOWAIT : BUS_DMA_WAITOK) | BUS_DMA_STREAMING);
    856 	if (error) {
    857 		XS_SETERR(xs, HBA_BOTCH);
    858 		return (CMD_COMPLETE);
    859 	}
    860 
    861 	segcnt = dmap->dm_nsegs;
    862 
    863 	isp_prt(isp, ISP_LOGDEBUG2, "%d byte %s %p in %d segs",
    864 	    xs->datalen, (xs->xs_control & XS_CTL_DATA_IN)? "read to" :
    865 	    "write from", xs->data, segcnt);
    866 
    867 	for (seg = 0, rq->req_seg_count = 0;
    868 	    seglim && seg < segcnt && rq->req_seg_count < seglim;
    869 	    seg++, rq->req_seg_count++) {
    870 		if (IS_FC(isp)) {
    871 			ispreqt2_t *rq2 = (ispreqt2_t *)rq;
    872 #if	_BYTE_ORDER == _BIG_ENDIAN
    873 			rq2->req_dataseg[rq2->req_seg_count].ds_count =
    874 			    bswap32(dmap->dm_segs[seg].ds_len);
    875 			rq2->req_dataseg[rq2->req_seg_count].ds_base =
    876 			    bswap32(dmap->dm_segs[seg].ds_addr);
    877 #else
    878 			rq2->req_dataseg[rq2->req_seg_count].ds_count =
    879 			    dmap->dm_segs[seg].ds_len;
    880 			rq2->req_dataseg[rq2->req_seg_count].ds_base =
    881 			    dmap->dm_segs[seg].ds_addr;
    882 #endif
    883 		} else {
    884 #if	_BYTE_ORDER == _BIG_ENDIAN
    885 			rq->req_dataseg[rq->req_seg_count].ds_count =
    886 			    bswap32(dmap->dm_segs[seg].ds_len);
    887 			rq->req_dataseg[rq->req_seg_count].ds_base =
    888 			    bswap32(dmap->dm_segs[seg].ds_addr);
    889 #else
    890 			rq->req_dataseg[rq->req_seg_count].ds_count =
    891 			    dmap->dm_segs[seg].ds_len;
    892 			rq->req_dataseg[rq->req_seg_count].ds_base =
    893 			    dmap->dm_segs[seg].ds_addr;
    894 #endif
    895 		}
    896 		isp_prt(isp, ISP_LOGDEBUG2, "seg0.[%d]={0x%lx,%lu}",
    897 		    rq->req_seg_count, (long) dmap->dm_segs[seg].ds_addr,
    898 		    (unsigned long) dmap->dm_segs[seg].ds_len);
    899 	}
    900 
    901 	if (seg == segcnt)
    902 		goto dmasync;
    903 
    904 	do {
    905 		crq = (ispcontreq_t *) ISP_QUEUE_ENTRY(isp->isp_rquest, *iptrp);
    906 		*iptrp = ISP_NXT_QENTRY(*iptrp, RQUEST_QUEUE_LEN(isp));
    907 		if (*iptrp == optr) {
    908 			isp_prt(isp, ISP_LOGDEBUG0, "Request Queue Overflow++");
    909 			bus_dmamap_unload(pcs->pci_dmat, dmap);
    910 			XS_SETERR(xs, HBA_BOTCH);
    911 			return (CMD_EAGAIN);
    912 		}
    913 		rq->req_header.rqs_entry_count++;
    914 		bzero((void *)crq, sizeof (*crq));
    915 		crq->req_header.rqs_entry_count = 1;
    916 		crq->req_header.rqs_entry_type = RQSTYPE_DATASEG;
    917 
    918 		for (ovseg = 0; seg < segcnt && ovseg < ISP_CDSEG;
    919 		    rq->req_seg_count++, seg++, ovseg++) {
    920 #if	_BYTE_ORDER == _BIG_ENDIAN
    921 			crq->req_dataseg[ovseg].ds_count =
    922 			    bswap32(dmap->dm_segs[seg].ds_len);
    923 			crq->req_dataseg[ovseg].ds_base =
    924 			    bswap32(dmap->dm_segs[seg].ds_addr);
    925 #else
    926 			crq->req_dataseg[ovseg].ds_count =
    927 			    dmap->dm_segs[seg].ds_len;
    928 			crq->req_dataseg[ovseg].ds_base =
    929 			    dmap->dm_segs[seg].ds_addr;
    930 #endif
    931 			isp_prt(isp, ISP_LOGDEBUG2, "seg%d.[%d]={0x%lx,%lu}",
    932 			    rq->req_header.rqs_entry_count - 1,
    933 			    rq->req_seg_count, (long)dmap->dm_segs[seg].ds_addr,
    934 			    (unsigned long) dmap->dm_segs[seg].ds_len);
    935 		}
    936 	} while (seg < segcnt);
    937 
    938 
    939 dmasync:
    940 	bus_dmamap_sync(pcs->pci_dmat, dmap, 0, dmap->dm_mapsize,
    941 	    (xs->xs_control & XS_CTL_DATA_IN) ?  BUS_DMASYNC_PREREAD :
    942 	    BUS_DMASYNC_PREWRITE);
    943 
    944 mbxsync:
    945 	ISP_SWIZZLE_REQUEST(isp, rq);
    946 	bus_dmamap_sync(pcs->pci_dmat, pcs->pci_rquest_dmap, 0,
    947 	    pcs->pci_rquest_dmap->dm_mapsize, BUS_DMASYNC_PREWRITE);
    948 	return (CMD_QUEUED);
    949 }
    950 
    951 static int
    952 isp_pci_intr(void *arg)
    953 {
    954 	int rv;
    955 	struct isp_pcisoftc *pcs = (struct isp_pcisoftc *)arg;
    956 	bus_dmamap_sync(pcs->pci_dmat, pcs->pci_result_dmap, 0,
    957 	    pcs->pci_result_dmap->dm_mapsize, BUS_DMASYNC_POSTREAD);
    958 	pcs->pci_isp.isp_osinfo.onintstack = 1;
    959 	rv = isp_intr(arg);
    960 	pcs->pci_isp.isp_osinfo.onintstack = 0;
    961 	return (rv);
    962 }
    963 
    964 static void
    965 isp_pci_dmateardown(struct ispsoftc *isp, XS_T *xs, u_int16_t handle)
    966 {
    967 	struct isp_pcisoftc *pcs = (struct isp_pcisoftc *)isp;
    968 	bus_dmamap_t dmap = pcs->pci_xfer_dmap[isp_handle_index(handle)];
    969 	bus_dmamap_sync(pcs->pci_dmat, dmap, 0, dmap->dm_mapsize,
    970 	    xs->xs_control & XS_CTL_DATA_IN ?
    971 	    BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE);
    972 	bus_dmamap_unload(pcs->pci_dmat, dmap);
    973 }
    974 
    975 static void
    976 isp_pci_reset1(struct ispsoftc *isp)
    977 {
    978 	/* Make sure the BIOS is disabled */
    979 	isp_pci_wr_reg(isp, HCCR, PCI_HCCR_CMD_BIOS);
    980 }
    981 
    982 static void
    983 isp_pci_dumpregs(struct ispsoftc *isp, const char *msg)
    984 {
    985 	struct isp_pcisoftc *pcs = (struct isp_pcisoftc *)isp;
    986 	if (msg)
    987 		printf("%s: %s\n", isp->isp_name, msg);
    988 	if (IS_SCSI(isp))
    989 		printf("    biu_conf1=%x", ISP_READ(isp, BIU_CONF1));
    990 	else
    991 		printf("    biu_csr=%x", ISP_READ(isp, BIU2100_CSR));
    992 	printf(" biu_icr=%x biu_isr=%x biu_sema=%x ", ISP_READ(isp, BIU_ICR),
    993 	    ISP_READ(isp, BIU_ISR), ISP_READ(isp, BIU_SEMA));
    994 	printf("risc_hccr=%x\n", ISP_READ(isp, HCCR));
    995 
    996 
    997 	if (IS_SCSI(isp)) {
    998 		ISP_WRITE(isp, HCCR, HCCR_CMD_PAUSE);
    999 		printf("    cdma_conf=%x cdma_sts=%x cdma_fifostat=%x\n",
   1000 			ISP_READ(isp, CDMA_CONF), ISP_READ(isp, CDMA_STATUS),
   1001 			ISP_READ(isp, CDMA_FIFO_STS));
   1002 		printf("    ddma_conf=%x ddma_sts=%x ddma_fifostat=%x\n",
   1003 			ISP_READ(isp, DDMA_CONF), ISP_READ(isp, DDMA_STATUS),
   1004 			ISP_READ(isp, DDMA_FIFO_STS));
   1005 		printf("    sxp_int=%x sxp_gross=%x sxp(scsi_ctrl)=%x\n",
   1006 			ISP_READ(isp, SXP_INTERRUPT),
   1007 			ISP_READ(isp, SXP_GROSS_ERR),
   1008 			ISP_READ(isp, SXP_PINS_CTRL));
   1009 		ISP_WRITE(isp, HCCR, HCCR_CMD_RELEASE);
   1010 	}
   1011 	printf("    mbox regs: %x %x %x %x %x\n",
   1012 	    ISP_READ(isp, OUTMAILBOX0), ISP_READ(isp, OUTMAILBOX1),
   1013 	    ISP_READ(isp, OUTMAILBOX2), ISP_READ(isp, OUTMAILBOX3),
   1014 	    ISP_READ(isp, OUTMAILBOX4));
   1015 	printf("    PCI Status Command/Status=%x\n",
   1016 	    pci_conf_read(pcs->pci_pc, pcs->pci_tag, PCI_COMMAND_STATUS_REG));
   1017 }
   1018