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pciide.c revision 1.182
      1 /*	$NetBSD: pciide.c,v 1.182 2003/03/14 22:46:05 bouyer Exp $	*/
      2 
      3 
      4 /*
      5  * Copyright (c) 1999, 2000, 2001 Manuel Bouyer.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *	This product includes software developed by Manuel Bouyer.
     18  * 4. Neither the name of the University nor the names of its contributors
     19  *    may be used to endorse or promote products derived from this software
     20  *    without specific prior written permission.
     21  *
     22  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     23  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     24  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     25  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     26  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     27  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     28  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     29  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     30  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     31  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     32  *
     33  */
     34 
     35 
     36 /*
     37  * Copyright (c) 1996, 1998 Christopher G. Demetriou.  All rights reserved.
     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. Redistributions in binary form must reproduce the above copyright
     45  *    notice, this list of conditions and the following disclaimer in the
     46  *    documentation and/or other materials provided with the distribution.
     47  * 3. All advertising materials mentioning features or use of this software
     48  *    must display the following acknowledgement:
     49  *      This product includes software developed by Christopher G. Demetriou
     50  *	for the NetBSD Project.
     51  * 4. The name of the author may not be used to endorse or promote products
     52  *    derived from this software without specific prior written permission
     53  *
     54  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     55  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     56  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     57  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     58  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     59  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     60  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     61  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     62  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     63  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     64  */
     65 
     66 /*
     67  * PCI IDE controller driver.
     68  *
     69  * Author: Christopher G. Demetriou, March 2, 1998 (derived from NetBSD
     70  * sys/dev/pci/ppb.c, revision 1.16).
     71  *
     72  * See "PCI IDE Controller Specification, Revision 1.0 3/4/94" and
     73  * "Programming Interface for Bus Master IDE Controller, Revision 1.0
     74  * 5/16/94" from the PCI SIG.
     75  *
     76  */
     77 
     78 #include <sys/cdefs.h>
     79 __KERNEL_RCSID(0, "$NetBSD: pciide.c,v 1.182 2003/03/14 22:46:05 bouyer Exp $");
     80 
     81 #ifndef WDCDEBUG
     82 #define WDCDEBUG
     83 #endif
     84 
     85 #define DEBUG_DMA   0x01
     86 #define DEBUG_XFERS  0x02
     87 #define DEBUG_FUNCS  0x08
     88 #define DEBUG_PROBE  0x10
     89 #ifdef WDCDEBUG
     90 int wdcdebug_pciide_mask = 0;
     91 #define WDCDEBUG_PRINT(args, level) \
     92 	if (wdcdebug_pciide_mask & (level)) printf args
     93 #else
     94 #define WDCDEBUG_PRINT(args, level)
     95 #endif
     96 #include <sys/param.h>
     97 #include <sys/systm.h>
     98 #include <sys/device.h>
     99 #include <sys/malloc.h>
    100 
    101 #include <uvm/uvm_extern.h>
    102 
    103 #include <machine/endian.h>
    104 
    105 #include <dev/pci/pcireg.h>
    106 #include <dev/pci/pcivar.h>
    107 #include <dev/pci/pcidevs.h>
    108 #include <dev/pci/pciidereg.h>
    109 #include <dev/pci/pciidevar.h>
    110 #include <dev/pci/pciide_piix_reg.h>
    111 #include <dev/pci/pciide_amd_reg.h>
    112 #include <dev/pci/pciide_apollo_reg.h>
    113 #include <dev/pci/pciide_cmd_reg.h>
    114 #include <dev/pci/pciide_cy693_reg.h>
    115 #include <dev/pci/pciide_sis_reg.h>
    116 #include <dev/pci/pciide_acer_reg.h>
    117 #include <dev/pci/pciide_pdc202xx_reg.h>
    118 #include <dev/pci/pciide_opti_reg.h>
    119 #include <dev/pci/pciide_hpt_reg.h>
    120 #include <dev/pci/pciide_acard_reg.h>
    121 #include <dev/pci/pciide_sl82c105_reg.h>
    122 #include <dev/pci/cy82c693var.h>
    123 
    124 #include "opt_pciide.h"
    125 
    126 /* inlines for reading/writing 8-bit PCI registers */
    127 static __inline u_int8_t pciide_pci_read __P((pci_chipset_tag_t, pcitag_t,
    128 					      int));
    129 static __inline void pciide_pci_write __P((pci_chipset_tag_t, pcitag_t,
    130 					   int, u_int8_t));
    131 
    132 static __inline u_int8_t
    133 pciide_pci_read(pc, pa, reg)
    134 	pci_chipset_tag_t pc;
    135 	pcitag_t pa;
    136 	int reg;
    137 {
    138 
    139 	return (pci_conf_read(pc, pa, (reg & ~0x03)) >>
    140 	    ((reg & 0x03) * 8) & 0xff);
    141 }
    142 
    143 static __inline void
    144 pciide_pci_write(pc, pa, reg, val)
    145 	pci_chipset_tag_t pc;
    146 	pcitag_t pa;
    147 	int reg;
    148 	u_int8_t val;
    149 {
    150 	pcireg_t pcival;
    151 
    152 	pcival = pci_conf_read(pc, pa, (reg & ~0x03));
    153 	pcival &= ~(0xff << ((reg & 0x03) * 8));
    154 	pcival |= (val << ((reg & 0x03) * 8));
    155 	pci_conf_write(pc, pa, (reg & ~0x03), pcival);
    156 }
    157 
    158 void default_chip_map __P((struct pciide_softc*, struct pci_attach_args*));
    159 
    160 void piix_chip_map __P((struct pciide_softc*, struct pci_attach_args*));
    161 void piix_setup_channel __P((struct channel_softc*));
    162 void piix3_4_setup_channel __P((struct channel_softc*));
    163 static u_int32_t piix_setup_idetim_timings __P((u_int8_t, u_int8_t, u_int8_t));
    164 static u_int32_t piix_setup_idetim_drvs __P((struct ata_drive_datas*));
    165 static u_int32_t piix_setup_sidetim_timings __P((u_int8_t, u_int8_t, u_int8_t));
    166 
    167 void amd7x6_chip_map __P((struct pciide_softc*, struct pci_attach_args*));
    168 void amd7x6_setup_channel __P((struct channel_softc*));
    169 
    170 void apollo_chip_map __P((struct pciide_softc*, struct pci_attach_args*));
    171 void apollo_setup_channel __P((struct channel_softc*));
    172 
    173 void cmd_chip_map __P((struct pciide_softc*, struct pci_attach_args*));
    174 void cmd0643_9_chip_map __P((struct pciide_softc*, struct pci_attach_args*));
    175 void cmd0643_9_setup_channel __P((struct channel_softc*));
    176 void cmd_channel_map __P((struct pci_attach_args *,
    177 			struct pciide_softc *, int));
    178 int  cmd_pci_intr __P((void *));
    179 void cmd646_9_irqack __P((struct channel_softc *));
    180 void cmd680_chip_map __P((struct pciide_softc*, struct pci_attach_args*));
    181 void cmd680_setup_channel __P((struct channel_softc*));
    182 void cmd680_channel_map __P((struct pci_attach_args *,
    183 			struct pciide_softc *, int));
    184 
    185 void cy693_chip_map __P((struct pciide_softc*, struct pci_attach_args*));
    186 void cy693_setup_channel __P((struct channel_softc*));
    187 
    188 void sis_chip_map __P((struct pciide_softc*, struct pci_attach_args*));
    189 void sis_setup_channel __P((struct channel_softc*));
    190 void sis96x_setup_channel __P((struct channel_softc*));
    191 static int sis_hostbr_match __P(( struct pci_attach_args *));
    192 static int sis_south_match __P(( struct pci_attach_args *));
    193 
    194 void acer_chip_map __P((struct pciide_softc*, struct pci_attach_args*));
    195 void acer_setup_channel __P((struct channel_softc*));
    196 int  acer_pci_intr __P((void *));
    197 
    198 void pdc202xx_chip_map __P((struct pciide_softc*, struct pci_attach_args*));
    199 void pdc202xx_setup_channel __P((struct channel_softc*));
    200 void pdc20268_setup_channel __P((struct channel_softc*));
    201 int  pdc202xx_pci_intr __P((void *));
    202 int  pdc20265_pci_intr __P((void *));
    203 
    204 void opti_chip_map __P((struct pciide_softc*, struct pci_attach_args*));
    205 void opti_setup_channel __P((struct channel_softc*));
    206 
    207 void hpt_chip_map __P((struct pciide_softc*, struct pci_attach_args*));
    208 void hpt_setup_channel __P((struct channel_softc*));
    209 int  hpt_pci_intr __P((void *));
    210 
    211 void acard_chip_map __P((struct pciide_softc*, struct pci_attach_args*));
    212 void acard_setup_channel __P((struct channel_softc*));
    213 int  acard_pci_intr __P((void *));
    214 
    215 void serverworks_chip_map __P((struct pciide_softc*, struct pci_attach_args*));
    216 void serverworks_setup_channel __P((struct channel_softc*));
    217 int  serverworks_pci_intr __P((void *));
    218 
    219 void sl82c105_chip_map __P((struct pciide_softc*, struct pci_attach_args*));
    220 void sl82c105_setup_channel __P((struct channel_softc*));
    221 
    222 void pciide_channel_dma_setup __P((struct pciide_channel *));
    223 int  pciide_dma_table_setup __P((struct pciide_softc*, int, int));
    224 int  pciide_dma_init __P((void*, int, int, void *, size_t, int));
    225 void pciide_dma_start __P((void*, int, int));
    226 int  pciide_dma_finish __P((void*, int, int, int));
    227 void pciide_irqack __P((struct channel_softc *));
    228 void pciide_print_modes __P((struct pciide_channel *));
    229 
    230 struct pciide_product_desc {
    231 	u_int32_t ide_product;
    232 	int ide_flags;
    233 	const char *ide_name;
    234 	/* map and setup chip, probe drives */
    235 	void (*chip_map) __P((struct pciide_softc*, struct pci_attach_args*));
    236 };
    237 
    238 /* Flags for ide_flags */
    239 #define IDE_PCI_CLASS_OVERRIDE	0x0001 /* accept even if class != pciide */
    240 #define	IDE_16BIT_IOSPACE	0x0002 /* I/O space BARS ignore upper word */
    241 
    242 /* Default product description for devices not known from this controller */
    243 const struct pciide_product_desc default_product_desc = {
    244 	0,
    245 	0,
    246 	"Generic PCI IDE controller",
    247 	default_chip_map,
    248 };
    249 
    250 const struct pciide_product_desc pciide_intel_products[] =  {
    251 	{ PCI_PRODUCT_INTEL_82092AA,
    252 	  0,
    253 	  "Intel 82092AA IDE controller",
    254 	  default_chip_map,
    255 	},
    256 	{ PCI_PRODUCT_INTEL_82371FB_IDE,
    257 	  0,
    258 	  "Intel 82371FB IDE controller (PIIX)",
    259 	  piix_chip_map,
    260 	},
    261 	{ PCI_PRODUCT_INTEL_82371SB_IDE,
    262 	  0,
    263 	  "Intel 82371SB IDE Interface (PIIX3)",
    264 	  piix_chip_map,
    265 	},
    266 	{ PCI_PRODUCT_INTEL_82371AB_IDE,
    267 	  0,
    268 	  "Intel 82371AB IDE controller (PIIX4)",
    269 	  piix_chip_map,
    270 	},
    271 	{ PCI_PRODUCT_INTEL_82440MX_IDE,
    272 	  0,
    273 	  "Intel 82440MX IDE controller",
    274 	  piix_chip_map
    275 	},
    276 	{ PCI_PRODUCT_INTEL_82801AA_IDE,
    277 	  0,
    278 	  "Intel 82801AA IDE Controller (ICH)",
    279 	  piix_chip_map,
    280 	},
    281 	{ PCI_PRODUCT_INTEL_82801AB_IDE,
    282 	  0,
    283 	  "Intel 82801AB IDE Controller (ICH0)",
    284 	  piix_chip_map,
    285 	},
    286 	{ PCI_PRODUCT_INTEL_82801BA_IDE,
    287 	  0,
    288 	  "Intel 82801BA IDE Controller (ICH2)",
    289 	  piix_chip_map,
    290 	},
    291 	{ PCI_PRODUCT_INTEL_82801BAM_IDE,
    292 	  0,
    293 	  "Intel 82801BAM IDE Controller (ICH2)",
    294 	  piix_chip_map,
    295 	},
    296 	{ PCI_PRODUCT_INTEL_82801CA_IDE_1,
    297 	  0,
    298 	  "Intel 82801CA IDE Controller",
    299 	  piix_chip_map,
    300 	},
    301 	{ PCI_PRODUCT_INTEL_82801CA_IDE_2,
    302 	  0,
    303 	  "Intel 82801CA IDE Controller",
    304 	  piix_chip_map,
    305 	},
    306 	{ PCI_PRODUCT_INTEL_82801DB_IDE,
    307 	  0,
    308 	  "Intel 82801DB IDE Controller (ICH4)",
    309 	  piix_chip_map,
    310 	},
    311 	{ 0,
    312 	  0,
    313 	  NULL,
    314 	  NULL
    315 	}
    316 };
    317 
    318 const struct pciide_product_desc pciide_amd_products[] =  {
    319 	{ PCI_PRODUCT_AMD_PBC756_IDE,
    320 	  0,
    321 	  "Advanced Micro Devices AMD756 IDE Controller",
    322 	  amd7x6_chip_map
    323 	},
    324 	{ PCI_PRODUCT_AMD_PBC766_IDE,
    325 	  0,
    326 	  "Advanced Micro Devices AMD766 IDE Controller",
    327 	  amd7x6_chip_map
    328 	},
    329 	{ PCI_PRODUCT_AMD_PBC768_IDE,
    330 	  0,
    331 	  "Advanced Micro Devices AMD768 IDE Controller",
    332 	  amd7x6_chip_map
    333 	},
    334 	{ PCI_PRODUCT_AMD_PBC8111_IDE,
    335 	  0,
    336 	  "Advanced Micro Devices AMD8111 IDE Controller",
    337 	  amd7x6_chip_map
    338 	},
    339 	{ 0,
    340 	  0,
    341 	  NULL,
    342 	  NULL
    343 	}
    344 };
    345 
    346 const struct pciide_product_desc pciide_nvidia_products[] = {
    347 	{ PCI_PRODUCT_NVIDIA_NFORCE_ATA100,
    348 	  0,
    349 	  "NVIDIA nForce IDE Controller",
    350 	  amd7x6_chip_map
    351 	},
    352 	{ PCI_PRODUCT_NVIDIA_NFORCE2_ATA133,
    353 	  0,
    354 	  "NVIDIA nForce2 IDE Controller",
    355 	  amd7x6_chip_map
    356 	},
    357 	{ 0,
    358 	  0,
    359 	  NULL,
    360 	  NULL
    361 	}
    362 };
    363 
    364 const struct pciide_product_desc pciide_cmd_products[] =  {
    365 	{ PCI_PRODUCT_CMDTECH_640,
    366 	  0,
    367 	  "CMD Technology PCI0640",
    368 	  cmd_chip_map
    369 	},
    370 	{ PCI_PRODUCT_CMDTECH_643,
    371 	  0,
    372 	  "CMD Technology PCI0643",
    373 	  cmd0643_9_chip_map,
    374 	},
    375 	{ PCI_PRODUCT_CMDTECH_646,
    376 	  0,
    377 	  "CMD Technology PCI0646",
    378 	  cmd0643_9_chip_map,
    379 	},
    380 	{ PCI_PRODUCT_CMDTECH_648,
    381 	  IDE_PCI_CLASS_OVERRIDE,
    382 	  "CMD Technology PCI0648",
    383 	  cmd0643_9_chip_map,
    384 	},
    385 	{ PCI_PRODUCT_CMDTECH_649,
    386 	  IDE_PCI_CLASS_OVERRIDE,
    387 	  "CMD Technology PCI0649",
    388 	  cmd0643_9_chip_map,
    389 	},
    390 	{ PCI_PRODUCT_CMDTECH_680,
    391 	  IDE_PCI_CLASS_OVERRIDE,
    392 	  "Silicon Image 0680",
    393 	  cmd680_chip_map,
    394 	},
    395 	{ 0,
    396 	  0,
    397 	  NULL,
    398 	  NULL
    399 	}
    400 };
    401 
    402 const struct pciide_product_desc pciide_via_products[] =  {
    403 	{ PCI_PRODUCT_VIATECH_VT82C586_IDE,
    404 	  0,
    405 	  NULL,
    406 	  apollo_chip_map,
    407 	 },
    408 	{ PCI_PRODUCT_VIATECH_VT82C586A_IDE,
    409 	  0,
    410 	  NULL,
    411 	  apollo_chip_map,
    412 	},
    413 	{ 0,
    414 	  0,
    415 	  NULL,
    416 	  NULL
    417 	}
    418 };
    419 
    420 const struct pciide_product_desc pciide_cypress_products[] =  {
    421 	{ PCI_PRODUCT_CONTAQ_82C693,
    422 	  IDE_16BIT_IOSPACE,
    423 	  "Cypress 82C693 IDE Controller",
    424 	  cy693_chip_map,
    425 	},
    426 	{ 0,
    427 	  0,
    428 	  NULL,
    429 	  NULL
    430 	}
    431 };
    432 
    433 const struct pciide_product_desc pciide_sis_products[] =  {
    434 	{ PCI_PRODUCT_SIS_5597_IDE,
    435 	  0,
    436 	  NULL,
    437 	  sis_chip_map,
    438 	},
    439 	{ 0,
    440 	  0,
    441 	  NULL,
    442 	  NULL
    443 	}
    444 };
    445 
    446 const struct pciide_product_desc pciide_acer_products[] =  {
    447 	{ PCI_PRODUCT_ALI_M5229,
    448 	  0,
    449 	  "Acer Labs M5229 UDMA IDE Controller",
    450 	  acer_chip_map,
    451 	},
    452 	{ 0,
    453 	  0,
    454 	  NULL,
    455 	  NULL
    456 	}
    457 };
    458 
    459 const struct pciide_product_desc pciide_promise_products[] =  {
    460 	{ PCI_PRODUCT_PROMISE_ULTRA33,
    461 	  IDE_PCI_CLASS_OVERRIDE,
    462 	  "Promise Ultra33/ATA Bus Master IDE Accelerator",
    463 	  pdc202xx_chip_map,
    464 	},
    465 	{ PCI_PRODUCT_PROMISE_ULTRA66,
    466 	  IDE_PCI_CLASS_OVERRIDE,
    467 	  "Promise Ultra66/ATA Bus Master IDE Accelerator",
    468 	  pdc202xx_chip_map,
    469 	},
    470 	{ PCI_PRODUCT_PROMISE_ULTRA100,
    471 	  IDE_PCI_CLASS_OVERRIDE,
    472 	  "Promise Ultra100/ATA Bus Master IDE Accelerator",
    473 	  pdc202xx_chip_map,
    474 	},
    475 	{ PCI_PRODUCT_PROMISE_ULTRA100X,
    476 	  IDE_PCI_CLASS_OVERRIDE,
    477 	  "Promise Ultra100/ATA Bus Master IDE Accelerator",
    478 	  pdc202xx_chip_map,
    479 	},
    480 	{ PCI_PRODUCT_PROMISE_ULTRA100TX2,
    481 	  IDE_PCI_CLASS_OVERRIDE,
    482 	  "Promise Ultra100TX2/ATA Bus Master IDE Accelerator",
    483 	  pdc202xx_chip_map,
    484 	},
    485 	{ PCI_PRODUCT_PROMISE_ULTRA100TX2v2,
    486 	  IDE_PCI_CLASS_OVERRIDE,
    487 	  "Promise Ultra100TX2v2/ATA Bus Master IDE Accelerator",
    488 	  pdc202xx_chip_map,
    489 	},
    490 	{ PCI_PRODUCT_PROMISE_ULTRA133,
    491 	  IDE_PCI_CLASS_OVERRIDE,
    492 	  "Promise Ultra133/ATA Bus Master IDE Accelerator",
    493 	  pdc202xx_chip_map,
    494 	},
    495 	{ PCI_PRODUCT_PROMISE_ULTRA133TX2,
    496 	  IDE_PCI_CLASS_OVERRIDE,
    497 	  "Promise Ultra133TX2/ATA Bus Master IDE Accelerator",
    498 	  pdc202xx_chip_map,
    499 	},
    500 	{ PCI_PRODUCT_PROMISE_MBULTRA133,
    501 	  IDE_PCI_CLASS_OVERRIDE,
    502 	  "Promise Ultra133/ATA Bus Master IDE Accelerator (MB)",
    503 	  pdc202xx_chip_map,
    504 	},
    505 	{ PCI_PRODUCT_PROMISE_ULTRA133TX2v2,
    506 	  IDE_PCI_CLASS_OVERRIDE,
    507 	  "Promise Ultra133TX2v2/ATA Bus Master IDE Accelerator",
    508 	  pdc202xx_chip_map,
    509 	},
    510 	{ PCI_PRODUCT_PROMISE_FASTTRAK133LITE,
    511 	  IDE_PCI_CLASS_OVERRIDE,
    512 	  "Promise Fasttrak133 Lite Bus Master IDE Accelerator",
    513 	  pdc202xx_chip_map,
    514 	},
    515 	{ PCI_PRODUCT_PROMISE_SATA150TX2PLUS,
    516 	  IDE_PCI_CLASS_OVERRIDE,
    517 	  "Promise Serial ATA/150 TX2plus Bus Master IDE Accelerator",
    518 	  pdc202xx_chip_map,
    519 	},
    520 	{ 0,
    521 	  0,
    522 	  NULL,
    523 	  NULL
    524 	}
    525 };
    526 
    527 const struct pciide_product_desc pciide_opti_products[] =  {
    528 	{ PCI_PRODUCT_OPTI_82C621,
    529 	  0,
    530 	  "OPTi 82c621 PCI IDE controller",
    531 	  opti_chip_map,
    532 	},
    533 	{ PCI_PRODUCT_OPTI_82C568,
    534 	  0,
    535 	  "OPTi 82c568 (82c621 compatible) PCI IDE controller",
    536 	  opti_chip_map,
    537 	},
    538 	{ PCI_PRODUCT_OPTI_82D568,
    539 	  0,
    540 	  "OPTi 82d568 (82c621 compatible) PCI IDE controller",
    541 	  opti_chip_map,
    542 	},
    543 	{ 0,
    544 	  0,
    545 	  NULL,
    546 	  NULL
    547 	}
    548 };
    549 
    550 const struct pciide_product_desc pciide_triones_products[] =  {
    551 	{ PCI_PRODUCT_TRIONES_HPT366,
    552 	  IDE_PCI_CLASS_OVERRIDE,
    553 	  NULL,
    554 	  hpt_chip_map,
    555 	},
    556 	{ PCI_PRODUCT_TRIONES_HPT372,
    557 	  IDE_PCI_CLASS_OVERRIDE,
    558 	  NULL,
    559 	  hpt_chip_map
    560 	},
    561 	{ PCI_PRODUCT_TRIONES_HPT374,
    562 	  IDE_PCI_CLASS_OVERRIDE,
    563 	  NULL,
    564 	  hpt_chip_map
    565 	},
    566 	{ 0,
    567 	  0,
    568 	  NULL,
    569 	  NULL
    570 	}
    571 };
    572 
    573 const struct pciide_product_desc pciide_acard_products[] =  {
    574 	{ PCI_PRODUCT_ACARD_ATP850U,
    575 	  IDE_PCI_CLASS_OVERRIDE,
    576 	  "Acard ATP850U Ultra33 IDE Controller",
    577 	  acard_chip_map,
    578 	},
    579 	{ PCI_PRODUCT_ACARD_ATP860,
    580 	  IDE_PCI_CLASS_OVERRIDE,
    581 	  "Acard ATP860 Ultra66 IDE Controller",
    582 	  acard_chip_map,
    583 	},
    584 	{ PCI_PRODUCT_ACARD_ATP860A,
    585 	  IDE_PCI_CLASS_OVERRIDE,
    586 	  "Acard ATP860-A Ultra66 IDE Controller",
    587 	  acard_chip_map,
    588 	},
    589 	{ 0,
    590 	  0,
    591 	  NULL,
    592 	  NULL
    593 	}
    594 };
    595 
    596 const struct pciide_product_desc pciide_serverworks_products[] =  {
    597 	{ PCI_PRODUCT_SERVERWORKS_OSB4_IDE,
    598 	  0,
    599 	  "ServerWorks OSB4 IDE Controller",
    600 	  serverworks_chip_map,
    601 	},
    602 	{ PCI_PRODUCT_SERVERWORKS_CSB5_IDE,
    603 	  0,
    604 	  "ServerWorks CSB5 IDE Controller",
    605 	  serverworks_chip_map,
    606 	},
    607 	{ PCI_PRODUCT_SERVERWORKS_CSB6_IDE,
    608 	  0,
    609 	  "ServerWorks CSB6 RAID/IDE Controller",
    610 	  serverworks_chip_map,
    611 	},
    612 	{ 0,
    613 	  0,
    614 	  NULL,
    615 	}
    616 };
    617 
    618 const struct pciide_product_desc pciide_symphony_products[] = {
    619 	{ PCI_PRODUCT_SYMPHONY_82C105,
    620 	  0,
    621 	  "Symphony Labs 82C105 IDE controller",
    622 	  sl82c105_chip_map,
    623 	},
    624 	{ 0,
    625 	  0,
    626 	  NULL,
    627 	}
    628 };
    629 
    630 const struct pciide_product_desc pciide_winbond_products[] =  {
    631 	{ PCI_PRODUCT_WINBOND_W83C553F_1,
    632 	  0,
    633 	  "Winbond W83C553F IDE controller",
    634 	  sl82c105_chip_map,
    635 	},
    636 	{ 0,
    637 	  0,
    638 	  NULL,
    639 	}
    640 };
    641 
    642 struct pciide_vendor_desc {
    643 	u_int32_t ide_vendor;
    644 	const struct pciide_product_desc *ide_products;
    645 };
    646 
    647 const struct pciide_vendor_desc pciide_vendors[] = {
    648 	{ PCI_VENDOR_INTEL, pciide_intel_products },
    649 	{ PCI_VENDOR_CMDTECH, pciide_cmd_products },
    650 	{ PCI_VENDOR_VIATECH, pciide_via_products },
    651 	{ PCI_VENDOR_CONTAQ, pciide_cypress_products },
    652 	{ PCI_VENDOR_SIS, pciide_sis_products },
    653 	{ PCI_VENDOR_ALI, pciide_acer_products },
    654 	{ PCI_VENDOR_PROMISE, pciide_promise_products },
    655 	{ PCI_VENDOR_AMD, pciide_amd_products },
    656 	{ PCI_VENDOR_OPTI, pciide_opti_products },
    657 	{ PCI_VENDOR_TRIONES, pciide_triones_products },
    658 	{ PCI_VENDOR_ACARD, pciide_acard_products },
    659 	{ PCI_VENDOR_SERVERWORKS, pciide_serverworks_products },
    660 	{ PCI_VENDOR_SYMPHONY, pciide_symphony_products },
    661 	{ PCI_VENDOR_WINBOND, pciide_winbond_products },
    662 	{ PCI_VENDOR_NVIDIA, pciide_nvidia_products },
    663 	{ 0, NULL }
    664 };
    665 
    666 /* options passed via the 'flags' config keyword */
    667 #define	PCIIDE_OPTIONS_DMA	0x01
    668 #define	PCIIDE_OPTIONS_NODMA	0x02
    669 
    670 int	pciide_match __P((struct device *, struct cfdata *, void *));
    671 void	pciide_attach __P((struct device *, struct device *, void *));
    672 
    673 CFATTACH_DECL(pciide, sizeof(struct pciide_softc),
    674     pciide_match, pciide_attach, NULL, NULL);
    675 
    676 int	pciide_chipen __P((struct pciide_softc *, struct pci_attach_args *));
    677 int	pciide_mapregs_compat __P(( struct pci_attach_args *,
    678 	    struct pciide_channel *, int, bus_size_t *, bus_size_t*));
    679 int	pciide_mapregs_native __P((struct pci_attach_args *,
    680 	    struct pciide_channel *, bus_size_t *, bus_size_t *,
    681 	    int (*pci_intr) __P((void *))));
    682 void	pciide_mapreg_dma __P((struct pciide_softc *,
    683 	    struct pci_attach_args *));
    684 int	pciide_chansetup __P((struct pciide_softc *, int, pcireg_t));
    685 void	pciide_mapchan __P((struct pci_attach_args *,
    686 	    struct pciide_channel *, pcireg_t, bus_size_t *, bus_size_t *,
    687 	    int (*pci_intr) __P((void *))));
    688 int	pciide_chan_candisable __P((struct pciide_channel *));
    689 void	pciide_map_compat_intr __P(( struct pci_attach_args *,
    690 	    struct pciide_channel *, int, int));
    691 int	pciide_compat_intr __P((void *));
    692 int	pciide_pci_intr __P((void *));
    693 const struct pciide_product_desc* pciide_lookup_product __P((u_int32_t));
    694 
    695 const struct pciide_product_desc *
    696 pciide_lookup_product(id)
    697 	u_int32_t id;
    698 {
    699 	const struct pciide_product_desc *pp;
    700 	const struct pciide_vendor_desc *vp;
    701 
    702 	for (vp = pciide_vendors; vp->ide_products != NULL; vp++)
    703 		if (PCI_VENDOR(id) == vp->ide_vendor)
    704 			break;
    705 
    706 	if ((pp = vp->ide_products) == NULL)
    707 		return NULL;
    708 
    709 	for (; pp->chip_map != NULL; pp++)
    710 		if (PCI_PRODUCT(id) == pp->ide_product)
    711 			break;
    712 
    713 	if (pp->chip_map == NULL)
    714 		return NULL;
    715 	return pp;
    716 }
    717 
    718 int
    719 pciide_match(parent, match, aux)
    720 	struct device *parent;
    721 	struct cfdata *match;
    722 	void *aux;
    723 {
    724 	struct pci_attach_args *pa = aux;
    725 	const struct pciide_product_desc *pp;
    726 
    727 	/*
    728 	 * Check the ID register to see that it's a PCI IDE controller.
    729 	 * If it is, we assume that we can deal with it; it _should_
    730 	 * work in a standardized way...
    731 	 */
    732 	if (PCI_CLASS(pa->pa_class) == PCI_CLASS_MASS_STORAGE &&
    733 	    PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_MASS_STORAGE_IDE) {
    734 		return (1);
    735 	}
    736 
    737 	/*
    738 	 * Some controllers (e.g. promise Utra-33) don't claim to be PCI IDE
    739 	 * controllers. Let see if we can deal with it anyway.
    740 	 */
    741 	pp = pciide_lookup_product(pa->pa_id);
    742 	if (pp != NULL && (pp->ide_flags & IDE_PCI_CLASS_OVERRIDE)) {
    743 		return (1);
    744 	}
    745 
    746 	return (0);
    747 }
    748 
    749 void
    750 pciide_attach(parent, self, aux)
    751 	struct device *parent, *self;
    752 	void *aux;
    753 {
    754 	struct pci_attach_args *pa = aux;
    755 	pci_chipset_tag_t pc = pa->pa_pc;
    756 	pcitag_t tag = pa->pa_tag;
    757 	struct pciide_softc *sc = (struct pciide_softc *)self;
    758 	pcireg_t csr;
    759 	char devinfo[256];
    760 	const char *displaydev;
    761 
    762 	sc->sc_pci_vendor = PCI_VENDOR(pa->pa_id);
    763 	sc->sc_pp = pciide_lookup_product(pa->pa_id);
    764 	if (sc->sc_pp == NULL) {
    765 		sc->sc_pp = &default_product_desc;
    766 		pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo);
    767 		displaydev = devinfo;
    768 	} else
    769 		displaydev = sc->sc_pp->ide_name;
    770 
    771 	/* if displaydev == NULL, printf is done in chip-specific map */
    772 	if (displaydev)
    773 		printf(": %s (rev. 0x%02x)\n", displaydev,
    774 		    PCI_REVISION(pa->pa_class));
    775 
    776 	sc->sc_pc = pa->pa_pc;
    777 	sc->sc_tag = pa->pa_tag;
    778 #ifdef WDCDEBUG
    779 	if (wdcdebug_pciide_mask & DEBUG_PROBE)
    780 		pci_conf_print(sc->sc_pc, sc->sc_tag, NULL);
    781 #endif
    782 	sc->sc_pp->chip_map(sc, pa);
    783 
    784 	if (sc->sc_dma_ok) {
    785 		csr = pci_conf_read(pc, tag, PCI_COMMAND_STATUS_REG);
    786 		csr |= PCI_COMMAND_MASTER_ENABLE;
    787 		pci_conf_write(pc, tag, PCI_COMMAND_STATUS_REG, csr);
    788 	}
    789 	WDCDEBUG_PRINT(("pciide: command/status register=%x\n",
    790 	    pci_conf_read(pc, tag, PCI_COMMAND_STATUS_REG)), DEBUG_PROBE);
    791 }
    792 
    793 /* tell whether the chip is enabled or not */
    794 int
    795 pciide_chipen(sc, pa)
    796 	struct pciide_softc *sc;
    797 	struct pci_attach_args *pa;
    798 {
    799 	pcireg_t csr;
    800 	if ((pa->pa_flags & PCI_FLAGS_IO_ENABLED) == 0) {
    801 		csr = pci_conf_read(sc->sc_pc, sc->sc_tag,
    802 		    PCI_COMMAND_STATUS_REG);
    803 		printf("%s: device disabled (at %s)\n",
    804 	 	   sc->sc_wdcdev.sc_dev.dv_xname,
    805 	  	  (csr & PCI_COMMAND_IO_ENABLE) == 0 ?
    806 		  "device" : "bridge");
    807 		return 0;
    808 	}
    809 	return 1;
    810 }
    811 
    812 int
    813 pciide_mapregs_compat(pa, cp, compatchan, cmdsizep, ctlsizep)
    814 	struct pci_attach_args *pa;
    815 	struct pciide_channel *cp;
    816 	int compatchan;
    817 	bus_size_t *cmdsizep, *ctlsizep;
    818 {
    819 	struct pciide_softc *sc = (struct pciide_softc *)cp->wdc_channel.wdc;
    820 	struct channel_softc *wdc_cp = &cp->wdc_channel;
    821 
    822 	cp->compat = 1;
    823 	*cmdsizep = PCIIDE_COMPAT_CMD_SIZE;
    824 	*ctlsizep = PCIIDE_COMPAT_CTL_SIZE;
    825 
    826 	wdc_cp->cmd_iot = pa->pa_iot;
    827 	if (bus_space_map(wdc_cp->cmd_iot, PCIIDE_COMPAT_CMD_BASE(compatchan),
    828 	    PCIIDE_COMPAT_CMD_SIZE, 0, &wdc_cp->cmd_ioh) != 0) {
    829 		printf("%s: couldn't map %s channel cmd regs\n",
    830 		    sc->sc_wdcdev.sc_dev.dv_xname, cp->name);
    831 		return (0);
    832 	}
    833 
    834 	wdc_cp->ctl_iot = pa->pa_iot;
    835 	if (bus_space_map(wdc_cp->ctl_iot, PCIIDE_COMPAT_CTL_BASE(compatchan),
    836 	    PCIIDE_COMPAT_CTL_SIZE, 0, &wdc_cp->ctl_ioh) != 0) {
    837 		printf("%s: couldn't map %s channel ctl regs\n",
    838 		    sc->sc_wdcdev.sc_dev.dv_xname, cp->name);
    839 		bus_space_unmap(wdc_cp->cmd_iot, wdc_cp->cmd_ioh,
    840 		    PCIIDE_COMPAT_CMD_SIZE);
    841 		return (0);
    842 	}
    843 
    844 	return (1);
    845 }
    846 
    847 int
    848 pciide_mapregs_native(pa, cp, cmdsizep, ctlsizep, pci_intr)
    849 	struct pci_attach_args * pa;
    850 	struct pciide_channel *cp;
    851 	bus_size_t *cmdsizep, *ctlsizep;
    852 	int (*pci_intr) __P((void *));
    853 {
    854 	struct pciide_softc *sc = (struct pciide_softc *)cp->wdc_channel.wdc;
    855 	struct channel_softc *wdc_cp = &cp->wdc_channel;
    856 	const char *intrstr;
    857 	pci_intr_handle_t intrhandle;
    858 
    859 	cp->compat = 0;
    860 
    861 	if (sc->sc_pci_ih == NULL) {
    862 		if (pci_intr_map(pa, &intrhandle) != 0) {
    863 			printf("%s: couldn't map native-PCI interrupt\n",
    864 			    sc->sc_wdcdev.sc_dev.dv_xname);
    865 			return 0;
    866 		}
    867 		intrstr = pci_intr_string(pa->pa_pc, intrhandle);
    868 		sc->sc_pci_ih = pci_intr_establish(pa->pa_pc,
    869 		    intrhandle, IPL_BIO, pci_intr, sc);
    870 		if (sc->sc_pci_ih != NULL) {
    871 			printf("%s: using %s for native-PCI interrupt\n",
    872 			    sc->sc_wdcdev.sc_dev.dv_xname,
    873 			    intrstr ? intrstr : "unknown interrupt");
    874 		} else {
    875 			printf("%s: couldn't establish native-PCI interrupt",
    876 			    sc->sc_wdcdev.sc_dev.dv_xname);
    877 			if (intrstr != NULL)
    878 				printf(" at %s", intrstr);
    879 			printf("\n");
    880 			return 0;
    881 		}
    882 	}
    883 	cp->ih = sc->sc_pci_ih;
    884 	if (pci_mapreg_map(pa, PCIIDE_REG_CMD_BASE(wdc_cp->channel),
    885 	    PCI_MAPREG_TYPE_IO, 0,
    886 	    &wdc_cp->cmd_iot, &wdc_cp->cmd_ioh, NULL, cmdsizep) != 0) {
    887 		printf("%s: couldn't map %s channel cmd regs\n",
    888 		    sc->sc_wdcdev.sc_dev.dv_xname, cp->name);
    889 		return 0;
    890 	}
    891 
    892 	if (pci_mapreg_map(pa, PCIIDE_REG_CTL_BASE(wdc_cp->channel),
    893 	    PCI_MAPREG_TYPE_IO, 0,
    894 	    &wdc_cp->ctl_iot, &cp->ctl_baseioh, NULL, ctlsizep) != 0) {
    895 		printf("%s: couldn't map %s channel ctl regs\n",
    896 		    sc->sc_wdcdev.sc_dev.dv_xname, cp->name);
    897 		bus_space_unmap(wdc_cp->cmd_iot, wdc_cp->cmd_ioh, *cmdsizep);
    898 		return 0;
    899 	}
    900 	/*
    901 	 * In native mode, 4 bytes of I/O space are mapped for the control
    902 	 * register, the control register is at offset 2. Pass the generic
    903 	 * code a handle for only one byte at the right offset.
    904 	 */
    905 	if (bus_space_subregion(wdc_cp->ctl_iot, cp->ctl_baseioh, 2, 1,
    906 	    &wdc_cp->ctl_ioh) != 0) {
    907 		printf("%s: unable to subregion %s channel ctl regs\n",
    908 		    sc->sc_wdcdev.sc_dev.dv_xname, cp->name);
    909 		bus_space_unmap(wdc_cp->cmd_iot, wdc_cp->cmd_ioh, *cmdsizep);
    910 		bus_space_unmap(wdc_cp->cmd_iot, cp->ctl_baseioh, *ctlsizep);
    911 		return 0;
    912 	}
    913 	return (1);
    914 }
    915 
    916 void
    917 pciide_mapreg_dma(sc, pa)
    918 	struct pciide_softc *sc;
    919 	struct pci_attach_args *pa;
    920 {
    921 	pcireg_t maptype;
    922 	bus_addr_t addr;
    923 
    924 	/*
    925 	 * Map DMA registers
    926 	 *
    927 	 * Note that sc_dma_ok is the right variable to test to see if
    928 	 * DMA can be done.  If the interface doesn't support DMA,
    929 	 * sc_dma_ok will never be non-zero.  If the DMA regs couldn't
    930 	 * be mapped, it'll be zero.  I.e., sc_dma_ok will only be
    931 	 * non-zero if the interface supports DMA and the registers
    932 	 * could be mapped.
    933 	 *
    934 	 * XXX Note that despite the fact that the Bus Master IDE specs
    935 	 * XXX say that "The bus master IDE function uses 16 bytes of IO
    936 	 * XXX space," some controllers (at least the United
    937 	 * XXX Microelectronics UM8886BF) place it in memory space.
    938 	 */
    939 	maptype = pci_mapreg_type(pa->pa_pc, pa->pa_tag,
    940 	    PCIIDE_REG_BUS_MASTER_DMA);
    941 
    942 	switch (maptype) {
    943 	case PCI_MAPREG_TYPE_IO:
    944 		sc->sc_dma_ok = (pci_mapreg_info(pa->pa_pc, pa->pa_tag,
    945 		    PCIIDE_REG_BUS_MASTER_DMA, PCI_MAPREG_TYPE_IO,
    946 		    &addr, NULL, NULL) == 0);
    947 		if (sc->sc_dma_ok == 0) {
    948 			printf(", but unused (couldn't query registers)");
    949 			break;
    950 		}
    951 		if ((sc->sc_pp->ide_flags & IDE_16BIT_IOSPACE)
    952 		    && addr >= 0x10000) {
    953 			sc->sc_dma_ok = 0;
    954 			printf(", but unused (registers at unsafe address "
    955 			    "%#lx)", (unsigned long)addr);
    956 			break;
    957 		}
    958 		/* FALLTHROUGH */
    959 
    960 	case PCI_MAPREG_MEM_TYPE_32BIT:
    961 		sc->sc_dma_ok = (pci_mapreg_map(pa,
    962 		    PCIIDE_REG_BUS_MASTER_DMA, maptype, 0,
    963 		    &sc->sc_dma_iot, &sc->sc_dma_ioh, NULL, NULL) == 0);
    964 		sc->sc_dmat = pa->pa_dmat;
    965 		if (sc->sc_dma_ok == 0) {
    966 			printf(", but unused (couldn't map registers)");
    967 		} else {
    968 			sc->sc_wdcdev.dma_arg = sc;
    969 			sc->sc_wdcdev.dma_init = pciide_dma_init;
    970 			sc->sc_wdcdev.dma_start = pciide_dma_start;
    971 			sc->sc_wdcdev.dma_finish = pciide_dma_finish;
    972 		}
    973 
    974 		if (sc->sc_wdcdev.sc_dev.dv_cfdata->cf_flags &
    975 		    PCIIDE_OPTIONS_NODMA) {
    976 			printf(", but unused (forced off by config file)");
    977 			sc->sc_dma_ok = 0;
    978 		}
    979 		break;
    980 
    981 	default:
    982 		sc->sc_dma_ok = 0;
    983 		printf(", but unsupported register maptype (0x%x)", maptype);
    984 	}
    985 }
    986 
    987 int
    988 pciide_compat_intr(arg)
    989 	void *arg;
    990 {
    991 	struct pciide_channel *cp = arg;
    992 
    993 #ifdef DIAGNOSTIC
    994 	/* should only be called for a compat channel */
    995 	if (cp->compat == 0)
    996 		panic("pciide compat intr called for non-compat chan %p", cp);
    997 #endif
    998 	return (wdcintr(&cp->wdc_channel));
    999 }
   1000 
   1001 int
   1002 pciide_pci_intr(arg)
   1003 	void *arg;
   1004 {
   1005 	struct pciide_softc *sc = arg;
   1006 	struct pciide_channel *cp;
   1007 	struct channel_softc *wdc_cp;
   1008 	int i, rv, crv;
   1009 
   1010 	rv = 0;
   1011 	for (i = 0; i < sc->sc_wdcdev.nchannels; i++) {
   1012 		cp = &sc->pciide_channels[i];
   1013 		wdc_cp = &cp->wdc_channel;
   1014 
   1015 		/* If a compat channel skip. */
   1016 		if (cp->compat)
   1017 			continue;
   1018 		/* if this channel not waiting for intr, skip */
   1019 		if ((wdc_cp->ch_flags & WDCF_IRQ_WAIT) == 0)
   1020 			continue;
   1021 
   1022 		crv = wdcintr(wdc_cp);
   1023 		if (crv == 0)
   1024 			;		/* leave rv alone */
   1025 		else if (crv == 1)
   1026 			rv = 1;		/* claim the intr */
   1027 		else if (rv == 0)	/* crv should be -1 in this case */
   1028 			rv = crv;	/* if we've done no better, take it */
   1029 	}
   1030 	return (rv);
   1031 }
   1032 
   1033 void
   1034 pciide_channel_dma_setup(cp)
   1035 	struct pciide_channel *cp;
   1036 {
   1037 	int drive;
   1038 	struct pciide_softc *sc = (struct pciide_softc *)cp->wdc_channel.wdc;
   1039 	struct ata_drive_datas *drvp;
   1040 
   1041 	for (drive = 0; drive < 2; drive++) {
   1042 		drvp = &cp->wdc_channel.ch_drive[drive];
   1043 		/* If no drive, skip */
   1044 		if ((drvp->drive_flags & DRIVE) == 0)
   1045 			continue;
   1046 		/* setup DMA if needed */
   1047 		if (((drvp->drive_flags & DRIVE_DMA) == 0 &&
   1048 		    (drvp->drive_flags & DRIVE_UDMA) == 0) ||
   1049 		    sc->sc_dma_ok == 0) {
   1050 			drvp->drive_flags &= ~(DRIVE_DMA | DRIVE_UDMA);
   1051 			continue;
   1052 		}
   1053 		if (pciide_dma_table_setup(sc, cp->wdc_channel.channel, drive)
   1054 		    != 0) {
   1055 			/* Abort DMA setup */
   1056 			drvp->drive_flags &= ~(DRIVE_DMA | DRIVE_UDMA);
   1057 			continue;
   1058 		}
   1059 	}
   1060 }
   1061 
   1062 int
   1063 pciide_dma_table_setup(sc, channel, drive)
   1064 	struct pciide_softc *sc;
   1065 	int channel, drive;
   1066 {
   1067 	bus_dma_segment_t seg;
   1068 	int error, rseg;
   1069 	const bus_size_t dma_table_size =
   1070 	    sizeof(struct idedma_table) * NIDEDMA_TABLES;
   1071 	struct pciide_dma_maps *dma_maps =
   1072 	    &sc->pciide_channels[channel].dma_maps[drive];
   1073 
   1074 	/* If table was already allocated, just return */
   1075 	if (dma_maps->dma_table)
   1076 		return 0;
   1077 
   1078 	/* Allocate memory for the DMA tables and map it */
   1079 	if ((error = bus_dmamem_alloc(sc->sc_dmat, dma_table_size,
   1080 	    IDEDMA_TBL_ALIGN, IDEDMA_TBL_ALIGN, &seg, 1, &rseg,
   1081 	    BUS_DMA_NOWAIT)) != 0) {
   1082 		printf("%s:%d: unable to allocate table DMA for "
   1083 		    "drive %d, error=%d\n", sc->sc_wdcdev.sc_dev.dv_xname,
   1084 		    channel, drive, error);
   1085 		return error;
   1086 	}
   1087 	if ((error = bus_dmamem_map(sc->sc_dmat, &seg, rseg,
   1088 	    dma_table_size,
   1089 	    (caddr_t *)&dma_maps->dma_table,
   1090 	    BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) != 0) {
   1091 		printf("%s:%d: unable to map table DMA for"
   1092 		    "drive %d, error=%d\n", sc->sc_wdcdev.sc_dev.dv_xname,
   1093 		    channel, drive, error);
   1094 		return error;
   1095 	}
   1096 	WDCDEBUG_PRINT(("pciide_dma_table_setup: table at %p len %lu, "
   1097 	    "phy 0x%lx\n", dma_maps->dma_table, (u_long)dma_table_size,
   1098 	    (unsigned long)seg.ds_addr), DEBUG_PROBE);
   1099 
   1100 	/* Create and load table DMA map for this disk */
   1101 	if ((error = bus_dmamap_create(sc->sc_dmat, dma_table_size,
   1102 	    1, dma_table_size, IDEDMA_TBL_ALIGN, BUS_DMA_NOWAIT,
   1103 	    &dma_maps->dmamap_table)) != 0) {
   1104 		printf("%s:%d: unable to create table DMA map for "
   1105 		    "drive %d, error=%d\n", sc->sc_wdcdev.sc_dev.dv_xname,
   1106 		    channel, drive, error);
   1107 		return error;
   1108 	}
   1109 	if ((error = bus_dmamap_load(sc->sc_dmat,
   1110 	    dma_maps->dmamap_table,
   1111 	    dma_maps->dma_table,
   1112 	    dma_table_size, NULL, BUS_DMA_NOWAIT)) != 0) {
   1113 		printf("%s:%d: unable to load table DMA map for "
   1114 		    "drive %d, error=%d\n", sc->sc_wdcdev.sc_dev.dv_xname,
   1115 		    channel, drive, error);
   1116 		return error;
   1117 	}
   1118 	WDCDEBUG_PRINT(("pciide_dma_table_setup: phy addr of table 0x%lx\n",
   1119 	    (unsigned long)dma_maps->dmamap_table->dm_segs[0].ds_addr),
   1120 	    DEBUG_PROBE);
   1121 	/* Create a xfer DMA map for this drive */
   1122 	if ((error = bus_dmamap_create(sc->sc_dmat, IDEDMA_BYTE_COUNT_MAX,
   1123 	    NIDEDMA_TABLES, IDEDMA_BYTE_COUNT_MAX, IDEDMA_BYTE_COUNT_ALIGN,
   1124 	    BUS_DMA_NOWAIT | BUS_DMA_ALLOCNOW,
   1125 	    &dma_maps->dmamap_xfer)) != 0) {
   1126 		printf("%s:%d: unable to create xfer DMA map for "
   1127 		    "drive %d, error=%d\n", sc->sc_wdcdev.sc_dev.dv_xname,
   1128 		    channel, drive, error);
   1129 		return error;
   1130 	}
   1131 	return 0;
   1132 }
   1133 
   1134 int
   1135 pciide_dma_init(v, channel, drive, databuf, datalen, flags)
   1136 	void *v;
   1137 	int channel, drive;
   1138 	void *databuf;
   1139 	size_t datalen;
   1140 	int flags;
   1141 {
   1142 	struct pciide_softc *sc = v;
   1143 	int error, seg;
   1144 	struct pciide_dma_maps *dma_maps =
   1145 	    &sc->pciide_channels[channel].dma_maps[drive];
   1146 
   1147 	error = bus_dmamap_load(sc->sc_dmat,
   1148 	    dma_maps->dmamap_xfer,
   1149 	    databuf, datalen, NULL, BUS_DMA_NOWAIT | BUS_DMA_STREAMING |
   1150 	    ((flags & WDC_DMA_READ) ? BUS_DMA_READ : BUS_DMA_WRITE));
   1151 	if (error) {
   1152 		printf("%s:%d: unable to load xfer DMA map for"
   1153 		    "drive %d, error=%d\n", sc->sc_wdcdev.sc_dev.dv_xname,
   1154 		    channel, drive, error);
   1155 		return error;
   1156 	}
   1157 
   1158 	bus_dmamap_sync(sc->sc_dmat, dma_maps->dmamap_xfer, 0,
   1159 	    dma_maps->dmamap_xfer->dm_mapsize,
   1160 	    (flags & WDC_DMA_READ) ?
   1161 	    BUS_DMASYNC_PREREAD : BUS_DMASYNC_PREWRITE);
   1162 
   1163 	for (seg = 0; seg < dma_maps->dmamap_xfer->dm_nsegs; seg++) {
   1164 #ifdef DIAGNOSTIC
   1165 		/* A segment must not cross a 64k boundary */
   1166 		{
   1167 		u_long phys = dma_maps->dmamap_xfer->dm_segs[seg].ds_addr;
   1168 		u_long len = dma_maps->dmamap_xfer->dm_segs[seg].ds_len;
   1169 		if ((phys & ~IDEDMA_BYTE_COUNT_MASK) !=
   1170 		    ((phys + len - 1) & ~IDEDMA_BYTE_COUNT_MASK)) {
   1171 			printf("pciide_dma: segment %d physical addr 0x%lx"
   1172 			    " len 0x%lx not properly aligned\n",
   1173 			    seg, phys, len);
   1174 			panic("pciide_dma: buf align");
   1175 		}
   1176 		}
   1177 #endif
   1178 		dma_maps->dma_table[seg].base_addr =
   1179 		    htole32(dma_maps->dmamap_xfer->dm_segs[seg].ds_addr);
   1180 		dma_maps->dma_table[seg].byte_count =
   1181 		    htole32(dma_maps->dmamap_xfer->dm_segs[seg].ds_len &
   1182 		    IDEDMA_BYTE_COUNT_MASK);
   1183 		WDCDEBUG_PRINT(("\t seg %d len %d addr 0x%x\n",
   1184 		   seg, le32toh(dma_maps->dma_table[seg].byte_count),
   1185 		   le32toh(dma_maps->dma_table[seg].base_addr)), DEBUG_DMA);
   1186 
   1187 	}
   1188 	dma_maps->dma_table[dma_maps->dmamap_xfer->dm_nsegs -1].byte_count |=
   1189 	    htole32(IDEDMA_BYTE_COUNT_EOT);
   1190 
   1191 	bus_dmamap_sync(sc->sc_dmat, dma_maps->dmamap_table, 0,
   1192 	    dma_maps->dmamap_table->dm_mapsize,
   1193 	    BUS_DMASYNC_PREWRITE);
   1194 
   1195 	/* Maps are ready. Start DMA function */
   1196 #ifdef DIAGNOSTIC
   1197 	if (dma_maps->dmamap_table->dm_segs[0].ds_addr & ~IDEDMA_TBL_MASK) {
   1198 		printf("pciide_dma_init: addr 0x%lx not properly aligned\n",
   1199 		    (u_long)dma_maps->dmamap_table->dm_segs[0].ds_addr);
   1200 		panic("pciide_dma_init: table align");
   1201 	}
   1202 #endif
   1203 
   1204 	/* Clear status bits */
   1205 	bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   1206 	    IDEDMA_CTL + IDEDMA_SCH_OFFSET * channel,
   1207 	    bus_space_read_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   1208 		IDEDMA_CTL + IDEDMA_SCH_OFFSET * channel));
   1209 	/* Write table addr */
   1210 	bus_space_write_4(sc->sc_dma_iot, sc->sc_dma_ioh,
   1211 	    IDEDMA_TBL + IDEDMA_SCH_OFFSET * channel,
   1212 	    dma_maps->dmamap_table->dm_segs[0].ds_addr);
   1213 	/* set read/write */
   1214 	bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   1215 	    IDEDMA_CMD + IDEDMA_SCH_OFFSET * channel,
   1216 	    (flags & WDC_DMA_READ) ? IDEDMA_CMD_WRITE: 0);
   1217 	/* remember flags */
   1218 	dma_maps->dma_flags = flags;
   1219 	return 0;
   1220 }
   1221 
   1222 void
   1223 pciide_dma_start(v, channel, drive)
   1224 	void *v;
   1225 	int channel, drive;
   1226 {
   1227 	struct pciide_softc *sc = v;
   1228 
   1229 	WDCDEBUG_PRINT(("pciide_dma_start\n"),DEBUG_XFERS);
   1230 	bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   1231 	    IDEDMA_CMD + IDEDMA_SCH_OFFSET * channel,
   1232 	    bus_space_read_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   1233 		IDEDMA_CMD + IDEDMA_SCH_OFFSET * channel) | IDEDMA_CMD_START);
   1234 }
   1235 
   1236 int
   1237 pciide_dma_finish(v, channel, drive, force)
   1238 	void *v;
   1239 	int channel, drive;
   1240 	int force;
   1241 {
   1242 	struct pciide_softc *sc = v;
   1243 	u_int8_t status;
   1244 	int error = 0;
   1245 	struct pciide_dma_maps *dma_maps =
   1246 	    &sc->pciide_channels[channel].dma_maps[drive];
   1247 
   1248 	status = bus_space_read_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   1249 	    IDEDMA_CTL + IDEDMA_SCH_OFFSET * channel);
   1250 	WDCDEBUG_PRINT(("pciide_dma_finish: status 0x%x\n", status),
   1251 	    DEBUG_XFERS);
   1252 
   1253 	if (force == 0 && (status & IDEDMA_CTL_INTR) == 0)
   1254 		return WDC_DMAST_NOIRQ;
   1255 
   1256 	/* stop DMA channel */
   1257 	bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   1258 	    IDEDMA_CMD + IDEDMA_SCH_OFFSET * channel,
   1259 	    bus_space_read_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   1260 		IDEDMA_CMD + IDEDMA_SCH_OFFSET * channel) & ~IDEDMA_CMD_START);
   1261 
   1262 	/* Unload the map of the data buffer */
   1263 	bus_dmamap_sync(sc->sc_dmat, dma_maps->dmamap_xfer, 0,
   1264 	    dma_maps->dmamap_xfer->dm_mapsize,
   1265 	    (dma_maps->dma_flags & WDC_DMA_READ) ?
   1266 	    BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE);
   1267 	bus_dmamap_unload(sc->sc_dmat, dma_maps->dmamap_xfer);
   1268 
   1269 	if ((status & IDEDMA_CTL_ERR) != 0) {
   1270 		printf("%s:%d:%d: bus-master DMA error: status=0x%x\n",
   1271 		    sc->sc_wdcdev.sc_dev.dv_xname, channel, drive, status);
   1272 		error |= WDC_DMAST_ERR;
   1273 	}
   1274 
   1275 	if ((status & IDEDMA_CTL_INTR) == 0) {
   1276 		printf("%s:%d:%d: bus-master DMA error: missing interrupt, "
   1277 		    "status=0x%x\n", sc->sc_wdcdev.sc_dev.dv_xname, channel,
   1278 		    drive, status);
   1279 		error |= WDC_DMAST_NOIRQ;
   1280 	}
   1281 
   1282 	if ((status & IDEDMA_CTL_ACT) != 0) {
   1283 		/* data underrun, may be a valid condition for ATAPI */
   1284 		error |= WDC_DMAST_UNDER;
   1285 	}
   1286 	return error;
   1287 }
   1288 
   1289 void
   1290 pciide_irqack(chp)
   1291 	struct channel_softc *chp;
   1292 {
   1293 	struct pciide_channel *cp = (struct pciide_channel*)chp;
   1294 	struct pciide_softc *sc = (struct pciide_softc *)cp->wdc_channel.wdc;
   1295 
   1296 	/* clear status bits in IDE DMA registers */
   1297 	bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   1298 	    IDEDMA_CTL + IDEDMA_SCH_OFFSET * chp->channel,
   1299 	    bus_space_read_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   1300 		IDEDMA_CTL + IDEDMA_SCH_OFFSET * chp->channel));
   1301 }
   1302 
   1303 /* some common code used by several chip_map */
   1304 int
   1305 pciide_chansetup(sc, channel, interface)
   1306 	struct pciide_softc *sc;
   1307 	int channel;
   1308 	pcireg_t interface;
   1309 {
   1310 	struct pciide_channel *cp = &sc->pciide_channels[channel];
   1311 	sc->wdc_chanarray[channel] = &cp->wdc_channel;
   1312 	cp->name = PCIIDE_CHANNEL_NAME(channel);
   1313 	cp->wdc_channel.channel = channel;
   1314 	cp->wdc_channel.wdc = &sc->sc_wdcdev;
   1315 	cp->wdc_channel.ch_queue =
   1316 	    malloc(sizeof(struct channel_queue), M_DEVBUF, M_NOWAIT);
   1317 	if (cp->wdc_channel.ch_queue == NULL) {
   1318 		printf("%s %s channel: "
   1319 		    "can't allocate memory for command queue",
   1320 		sc->sc_wdcdev.sc_dev.dv_xname, cp->name);
   1321 		return 0;
   1322 	}
   1323 	printf("%s: %s channel %s to %s mode\n",
   1324 	    sc->sc_wdcdev.sc_dev.dv_xname, cp->name,
   1325 	    (interface & PCIIDE_INTERFACE_SETTABLE(channel)) ?
   1326 	    "configured" : "wired",
   1327 	    (interface & PCIIDE_INTERFACE_PCI(channel)) ?
   1328 	    "native-PCI" : "compatibility");
   1329 	return 1;
   1330 }
   1331 
   1332 /* some common code used by several chip channel_map */
   1333 void
   1334 pciide_mapchan(pa, cp, interface, cmdsizep, ctlsizep, pci_intr)
   1335 	struct pci_attach_args *pa;
   1336 	struct pciide_channel *cp;
   1337 	pcireg_t interface;
   1338 	bus_size_t *cmdsizep, *ctlsizep;
   1339 	int (*pci_intr) __P((void *));
   1340 {
   1341 	struct channel_softc *wdc_cp = &cp->wdc_channel;
   1342 
   1343 	if (interface & PCIIDE_INTERFACE_PCI(wdc_cp->channel))
   1344 		cp->hw_ok = pciide_mapregs_native(pa, cp, cmdsizep, ctlsizep,
   1345 		    pci_intr);
   1346 	else
   1347 		cp->hw_ok = pciide_mapregs_compat(pa, cp,
   1348 		    wdc_cp->channel, cmdsizep, ctlsizep);
   1349 
   1350 	if (cp->hw_ok == 0)
   1351 		return;
   1352 	wdc_cp->data32iot = wdc_cp->cmd_iot;
   1353 	wdc_cp->data32ioh = wdc_cp->cmd_ioh;
   1354 	wdcattach(wdc_cp);
   1355 }
   1356 
   1357 /*
   1358  * Generic code to call to know if a channel can be disabled. Return 1
   1359  * if channel can be disabled, 0 if not
   1360  */
   1361 int
   1362 pciide_chan_candisable(cp)
   1363 	struct pciide_channel *cp;
   1364 {
   1365 	struct pciide_softc *sc = (struct pciide_softc *)cp->wdc_channel.wdc;
   1366 	struct channel_softc *wdc_cp = &cp->wdc_channel;
   1367 
   1368 	if ((wdc_cp->ch_drive[0].drive_flags & DRIVE) == 0 &&
   1369 	    (wdc_cp->ch_drive[1].drive_flags & DRIVE) == 0) {
   1370 		printf("%s: disabling %s channel (no drives)\n",
   1371 		    sc->sc_wdcdev.sc_dev.dv_xname, cp->name);
   1372 		cp->hw_ok = 0;
   1373 		return 1;
   1374 	}
   1375 	return 0;
   1376 }
   1377 
   1378 /*
   1379  * generic code to map the compat intr if hw_ok=1 and it is a compat channel.
   1380  * Set hw_ok=0 on failure
   1381  */
   1382 void
   1383 pciide_map_compat_intr(pa, cp, compatchan, interface)
   1384 	struct pci_attach_args *pa;
   1385 	struct pciide_channel *cp;
   1386 	int compatchan, interface;
   1387 {
   1388 	struct pciide_softc *sc = (struct pciide_softc *)cp->wdc_channel.wdc;
   1389 	struct channel_softc *wdc_cp = &cp->wdc_channel;
   1390 
   1391 	if (cp->hw_ok == 0)
   1392 		return;
   1393 	if ((interface & PCIIDE_INTERFACE_PCI(wdc_cp->channel)) != 0)
   1394 		return;
   1395 
   1396 #ifdef __HAVE_PCIIDE_MACHDEP_COMPAT_INTR_ESTABLISH
   1397 	cp->ih = pciide_machdep_compat_intr_establish(&sc->sc_wdcdev.sc_dev,
   1398 	    pa, compatchan, pciide_compat_intr, cp);
   1399 	if (cp->ih == NULL) {
   1400 #endif
   1401 		printf("%s: no compatibility interrupt for use by %s "
   1402 		    "channel\n", sc->sc_wdcdev.sc_dev.dv_xname, cp->name);
   1403 		cp->hw_ok = 0;
   1404 #ifdef __HAVE_PCIIDE_MACHDEP_COMPAT_INTR_ESTABLISH
   1405 	}
   1406 #endif
   1407 }
   1408 
   1409 void
   1410 pciide_print_modes(cp)
   1411 	struct pciide_channel *cp;
   1412 {
   1413 	wdc_print_modes(&cp->wdc_channel);
   1414 }
   1415 
   1416 void
   1417 default_chip_map(sc, pa)
   1418 	struct pciide_softc *sc;
   1419 	struct pci_attach_args *pa;
   1420 {
   1421 	struct pciide_channel *cp;
   1422 	pcireg_t interface = PCI_INTERFACE(pa->pa_class);
   1423 	pcireg_t csr;
   1424 	int channel, drive;
   1425 	struct ata_drive_datas *drvp;
   1426 	u_int8_t idedma_ctl;
   1427 	bus_size_t cmdsize, ctlsize;
   1428 	char *failreason;
   1429 
   1430 	if (pciide_chipen(sc, pa) == 0)
   1431 		return;
   1432 
   1433 	if (interface & PCIIDE_INTERFACE_BUS_MASTER_DMA) {
   1434 		printf("%s: bus-master DMA support present",
   1435 		    sc->sc_wdcdev.sc_dev.dv_xname);
   1436 		if (sc->sc_pp == &default_product_desc &&
   1437 		    (sc->sc_wdcdev.sc_dev.dv_cfdata->cf_flags &
   1438 		    PCIIDE_OPTIONS_DMA) == 0) {
   1439 			printf(", but unused (no driver support)");
   1440 			sc->sc_dma_ok = 0;
   1441 		} else {
   1442 			pciide_mapreg_dma(sc, pa);
   1443 			if (sc->sc_dma_ok != 0)
   1444 				printf(", used without full driver "
   1445 				    "support");
   1446 		}
   1447 	} else {
   1448 		printf("%s: hardware does not support DMA",
   1449 		    sc->sc_wdcdev.sc_dev.dv_xname);
   1450 		sc->sc_dma_ok = 0;
   1451 	}
   1452 	printf("\n");
   1453 	if (sc->sc_dma_ok) {
   1454 		sc->sc_wdcdev.cap |= WDC_CAPABILITY_DMA | WDC_CAPABILITY_IRQACK;
   1455 		sc->sc_wdcdev.irqack = pciide_irqack;
   1456 	}
   1457 	sc->sc_wdcdev.PIO_cap = 0;
   1458 	sc->sc_wdcdev.DMA_cap = 0;
   1459 
   1460 	sc->sc_wdcdev.channels = sc->wdc_chanarray;
   1461 	sc->sc_wdcdev.nchannels = PCIIDE_NUM_CHANNELS;
   1462 	sc->sc_wdcdev.cap |= WDC_CAPABILITY_DATA16;
   1463 
   1464 	for (channel = 0; channel < sc->sc_wdcdev.nchannels; channel++) {
   1465 		cp = &sc->pciide_channels[channel];
   1466 		if (pciide_chansetup(sc, channel, interface) == 0)
   1467 			continue;
   1468 		if (interface & PCIIDE_INTERFACE_PCI(channel)) {
   1469 			cp->hw_ok = pciide_mapregs_native(pa, cp, &cmdsize,
   1470 			    &ctlsize, pciide_pci_intr);
   1471 		} else {
   1472 			cp->hw_ok = pciide_mapregs_compat(pa, cp,
   1473 			    channel, &cmdsize, &ctlsize);
   1474 		}
   1475 		if (cp->hw_ok == 0)
   1476 			continue;
   1477 		/*
   1478 		 * Check to see if something appears to be there.
   1479 		 */
   1480 		failreason = NULL;
   1481 		if (!wdcprobe(&cp->wdc_channel)) {
   1482 			failreason = "not responding; disabled or no drives?";
   1483 			goto next;
   1484 		}
   1485 		/*
   1486 		 * Now, make sure it's actually attributable to this PCI IDE
   1487 		 * channel by trying to access the channel again while the
   1488 		 * PCI IDE controller's I/O space is disabled.  (If the
   1489 		 * channel no longer appears to be there, it belongs to
   1490 		 * this controller.)  YUCK!
   1491 		 */
   1492 		csr = pci_conf_read(sc->sc_pc, sc->sc_tag,
   1493 		    PCI_COMMAND_STATUS_REG);
   1494 		pci_conf_write(sc->sc_pc, sc->sc_tag, PCI_COMMAND_STATUS_REG,
   1495 		    csr & ~PCI_COMMAND_IO_ENABLE);
   1496 		if (wdcprobe(&cp->wdc_channel))
   1497 			failreason = "other hardware responding at addresses";
   1498 		pci_conf_write(sc->sc_pc, sc->sc_tag,
   1499 		    PCI_COMMAND_STATUS_REG, csr);
   1500 next:
   1501 		if (failreason) {
   1502 			printf("%s: %s channel ignored (%s)\n",
   1503 			    sc->sc_wdcdev.sc_dev.dv_xname, cp->name,
   1504 			    failreason);
   1505 			cp->hw_ok = 0;
   1506 			bus_space_unmap(cp->wdc_channel.cmd_iot,
   1507 			    cp->wdc_channel.cmd_ioh, cmdsize);
   1508 			if (interface & PCIIDE_INTERFACE_PCI(channel))
   1509 				bus_space_unmap(cp->wdc_channel.ctl_iot,
   1510 				    cp->ctl_baseioh, ctlsize);
   1511 			else
   1512 				bus_space_unmap(cp->wdc_channel.ctl_iot,
   1513 				    cp->wdc_channel.ctl_ioh, ctlsize);
   1514 		} else {
   1515 			pciide_map_compat_intr(pa, cp, channel, interface);
   1516 		}
   1517 		if (cp->hw_ok) {
   1518 			cp->wdc_channel.data32iot = cp->wdc_channel.cmd_iot;
   1519 			cp->wdc_channel.data32ioh = cp->wdc_channel.cmd_ioh;
   1520 			wdcattach(&cp->wdc_channel);
   1521 		}
   1522 	}
   1523 
   1524 	if (sc->sc_dma_ok == 0)
   1525 		return;
   1526 
   1527 	/* Allocate DMA maps */
   1528 	for (channel = 0; channel < sc->sc_wdcdev.nchannels; channel++) {
   1529 		idedma_ctl = 0;
   1530 		cp = &sc->pciide_channels[channel];
   1531 		for (drive = 0; drive < 2; drive++) {
   1532 			drvp = &cp->wdc_channel.ch_drive[drive];
   1533 			/* If no drive, skip */
   1534 			if ((drvp->drive_flags & DRIVE) == 0)
   1535 				continue;
   1536 			if ((drvp->drive_flags & DRIVE_DMA) == 0)
   1537 				continue;
   1538 			if (pciide_dma_table_setup(sc, channel, drive) != 0) {
   1539 				/* Abort DMA setup */
   1540 				printf("%s:%d:%d: can't allocate DMA maps, "
   1541 				    "using PIO transfers\n",
   1542 				    sc->sc_wdcdev.sc_dev.dv_xname,
   1543 				    channel, drive);
   1544 				drvp->drive_flags &= ~DRIVE_DMA;
   1545 			}
   1546 			printf("%s:%d:%d: using DMA data transfers\n",
   1547 			    sc->sc_wdcdev.sc_dev.dv_xname,
   1548 			    channel, drive);
   1549 			idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
   1550 		}
   1551 		if (idedma_ctl != 0) {
   1552 			/* Add software bits in status register */
   1553 			bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   1554 			    IDEDMA_CTL + (IDEDMA_SCH_OFFSET * channel),
   1555 			    idedma_ctl);
   1556 		}
   1557 	}
   1558 }
   1559 
   1560 void
   1561 piix_chip_map(sc, pa)
   1562 	struct pciide_softc *sc;
   1563 	struct pci_attach_args *pa;
   1564 {
   1565 	struct pciide_channel *cp;
   1566 	int channel;
   1567 	u_int32_t idetim;
   1568 	bus_size_t cmdsize, ctlsize;
   1569 
   1570 	if (pciide_chipen(sc, pa) == 0)
   1571 		return;
   1572 
   1573 	printf("%s: bus-master DMA support present",
   1574 	    sc->sc_wdcdev.sc_dev.dv_xname);
   1575 	pciide_mapreg_dma(sc, pa);
   1576 	printf("\n");
   1577 	sc->sc_wdcdev.cap |= WDC_CAPABILITY_DATA16 | WDC_CAPABILITY_DATA32 |
   1578 	    WDC_CAPABILITY_MODE;
   1579 	if (sc->sc_dma_ok) {
   1580 		sc->sc_wdcdev.cap |= WDC_CAPABILITY_DMA | WDC_CAPABILITY_IRQACK;
   1581 		sc->sc_wdcdev.irqack = pciide_irqack;
   1582 		switch(sc->sc_pp->ide_product) {
   1583 		case PCI_PRODUCT_INTEL_82371AB_IDE:
   1584 		case PCI_PRODUCT_INTEL_82440MX_IDE:
   1585 		case PCI_PRODUCT_INTEL_82801AA_IDE:
   1586 		case PCI_PRODUCT_INTEL_82801AB_IDE:
   1587 		case PCI_PRODUCT_INTEL_82801BA_IDE:
   1588 		case PCI_PRODUCT_INTEL_82801BAM_IDE:
   1589 		case PCI_PRODUCT_INTEL_82801CA_IDE_1:
   1590 		case PCI_PRODUCT_INTEL_82801CA_IDE_2:
   1591 		case PCI_PRODUCT_INTEL_82801DB_IDE:
   1592 			sc->sc_wdcdev.cap |= WDC_CAPABILITY_UDMA;
   1593 		}
   1594 	}
   1595 	sc->sc_wdcdev.PIO_cap = 4;
   1596 	sc->sc_wdcdev.DMA_cap = 2;
   1597 	switch(sc->sc_pp->ide_product) {
   1598 	case PCI_PRODUCT_INTEL_82801AA_IDE:
   1599 		sc->sc_wdcdev.UDMA_cap = 4;
   1600 		break;
   1601 	case PCI_PRODUCT_INTEL_82801BA_IDE:
   1602 	case PCI_PRODUCT_INTEL_82801BAM_IDE:
   1603 	case PCI_PRODUCT_INTEL_82801CA_IDE_1:
   1604 	case PCI_PRODUCT_INTEL_82801CA_IDE_2:
   1605 	case PCI_PRODUCT_INTEL_82801DB_IDE:
   1606 		sc->sc_wdcdev.UDMA_cap = 5;
   1607 		break;
   1608 	default:
   1609 		sc->sc_wdcdev.UDMA_cap = 2;
   1610 	}
   1611 	if (sc->sc_pp->ide_product == PCI_PRODUCT_INTEL_82371FB_IDE)
   1612 		sc->sc_wdcdev.set_modes = piix_setup_channel;
   1613 	else
   1614 		sc->sc_wdcdev.set_modes = piix3_4_setup_channel;
   1615 	sc->sc_wdcdev.channels = sc->wdc_chanarray;
   1616 	sc->sc_wdcdev.nchannels = PCIIDE_NUM_CHANNELS;
   1617 
   1618 	WDCDEBUG_PRINT(("piix_setup_chip: old idetim=0x%x",
   1619 	    pci_conf_read(sc->sc_pc, sc->sc_tag, PIIX_IDETIM)),
   1620 	    DEBUG_PROBE);
   1621 	if (sc->sc_pp->ide_product != PCI_PRODUCT_INTEL_82371FB_IDE) {
   1622 		WDCDEBUG_PRINT((", sidetim=0x%x",
   1623 		    pci_conf_read(sc->sc_pc, sc->sc_tag, PIIX_SIDETIM)),
   1624 		    DEBUG_PROBE);
   1625 		if (sc->sc_wdcdev.cap & WDC_CAPABILITY_UDMA) {
   1626 			WDCDEBUG_PRINT((", udamreg 0x%x",
   1627 			    pci_conf_read(sc->sc_pc, sc->sc_tag, PIIX_UDMAREG)),
   1628 			    DEBUG_PROBE);
   1629 		}
   1630 		if (sc->sc_pp->ide_product == PCI_PRODUCT_INTEL_82801AA_IDE ||
   1631 		    sc->sc_pp->ide_product == PCI_PRODUCT_INTEL_82801AB_IDE ||
   1632 		    sc->sc_pp->ide_product == PCI_PRODUCT_INTEL_82801BA_IDE ||
   1633 		    sc->sc_pp->ide_product == PCI_PRODUCT_INTEL_82801BAM_IDE ||
   1634 		    sc->sc_pp->ide_product == PCI_PRODUCT_INTEL_82801CA_IDE_1 ||
   1635 		    sc->sc_pp->ide_product == PCI_PRODUCT_INTEL_82801CA_IDE_2 ||
   1636 		    sc->sc_pp->ide_product == PCI_PRODUCT_INTEL_82801DB_IDE) {
   1637 			WDCDEBUG_PRINT((", IDE_CONTROL 0x%x",
   1638 			    pci_conf_read(sc->sc_pc, sc->sc_tag, PIIX_CONFIG)),
   1639 			    DEBUG_PROBE);
   1640 		}
   1641 
   1642 	}
   1643 	WDCDEBUG_PRINT(("\n"), DEBUG_PROBE);
   1644 
   1645 	for (channel = 0; channel < sc->sc_wdcdev.nchannels; channel++) {
   1646 		cp = &sc->pciide_channels[channel];
   1647 		/* PIIX is compat-only */
   1648 		if (pciide_chansetup(sc, channel, 0) == 0)
   1649 			continue;
   1650 		idetim = pci_conf_read(sc->sc_pc, sc->sc_tag, PIIX_IDETIM);
   1651 		if ((PIIX_IDETIM_READ(idetim, channel) &
   1652 		    PIIX_IDETIM_IDE) == 0) {
   1653 			printf("%s: %s channel ignored (disabled)\n",
   1654 			    sc->sc_wdcdev.sc_dev.dv_xname, cp->name);
   1655 			continue;
   1656 		}
   1657 		/* PIIX are compat-only pciide devices */
   1658 		pciide_mapchan(pa, cp, 0, &cmdsize, &ctlsize, pciide_pci_intr);
   1659 		if (cp->hw_ok == 0)
   1660 			continue;
   1661 		if (pciide_chan_candisable(cp)) {
   1662 			idetim = PIIX_IDETIM_CLEAR(idetim, PIIX_IDETIM_IDE,
   1663 			    channel);
   1664 			pci_conf_write(sc->sc_pc, sc->sc_tag, PIIX_IDETIM,
   1665 			    idetim);
   1666 		}
   1667 		pciide_map_compat_intr(pa, cp, channel, 0);
   1668 		if (cp->hw_ok == 0)
   1669 			continue;
   1670 		sc->sc_wdcdev.set_modes(&cp->wdc_channel);
   1671 	}
   1672 
   1673 	WDCDEBUG_PRINT(("piix_setup_chip: idetim=0x%x",
   1674 	    pci_conf_read(sc->sc_pc, sc->sc_tag, PIIX_IDETIM)),
   1675 	    DEBUG_PROBE);
   1676 	if (sc->sc_pp->ide_product != PCI_PRODUCT_INTEL_82371FB_IDE) {
   1677 		WDCDEBUG_PRINT((", sidetim=0x%x",
   1678 		    pci_conf_read(sc->sc_pc, sc->sc_tag, PIIX_SIDETIM)),
   1679 		    DEBUG_PROBE);
   1680 		if (sc->sc_wdcdev.cap & WDC_CAPABILITY_UDMA) {
   1681 			WDCDEBUG_PRINT((", udamreg 0x%x",
   1682 			    pci_conf_read(sc->sc_pc, sc->sc_tag, PIIX_UDMAREG)),
   1683 			    DEBUG_PROBE);
   1684 		}
   1685 		if (sc->sc_pp->ide_product == PCI_PRODUCT_INTEL_82801AA_IDE ||
   1686 		    sc->sc_pp->ide_product == PCI_PRODUCT_INTEL_82801AB_IDE ||
   1687 		    sc->sc_pp->ide_product == PCI_PRODUCT_INTEL_82801BA_IDE ||
   1688 		    sc->sc_pp->ide_product == PCI_PRODUCT_INTEL_82801BAM_IDE ||
   1689 		    sc->sc_pp->ide_product == PCI_PRODUCT_INTEL_82801CA_IDE_1 ||
   1690 		    sc->sc_pp->ide_product == PCI_PRODUCT_INTEL_82801CA_IDE_2 ||
   1691 		    sc->sc_pp->ide_product == PCI_PRODUCT_INTEL_82801DB_IDE) {
   1692 			WDCDEBUG_PRINT((", IDE_CONTROL 0x%x",
   1693 			    pci_conf_read(sc->sc_pc, sc->sc_tag, PIIX_CONFIG)),
   1694 			    DEBUG_PROBE);
   1695 		}
   1696 	}
   1697 	WDCDEBUG_PRINT(("\n"), DEBUG_PROBE);
   1698 }
   1699 
   1700 void
   1701 piix_setup_channel(chp)
   1702 	struct channel_softc *chp;
   1703 {
   1704 	u_int8_t mode[2], drive;
   1705 	u_int32_t oidetim, idetim, idedma_ctl;
   1706 	struct pciide_channel *cp = (struct pciide_channel*)chp;
   1707 	struct pciide_softc *sc = (struct pciide_softc *)cp->wdc_channel.wdc;
   1708 	struct ata_drive_datas *drvp = cp->wdc_channel.ch_drive;
   1709 
   1710 	oidetim = pci_conf_read(sc->sc_pc, sc->sc_tag, PIIX_IDETIM);
   1711 	idetim = PIIX_IDETIM_CLEAR(oidetim, 0xffff, chp->channel);
   1712 	idedma_ctl = 0;
   1713 
   1714 	/* set up new idetim: Enable IDE registers decode */
   1715 	idetim = PIIX_IDETIM_SET(idetim, PIIX_IDETIM_IDE,
   1716 	    chp->channel);
   1717 
   1718 	/* setup DMA */
   1719 	pciide_channel_dma_setup(cp);
   1720 
   1721 	/*
   1722 	 * Here we have to mess up with drives mode: PIIX can't have
   1723 	 * different timings for master and slave drives.
   1724 	 * We need to find the best combination.
   1725 	 */
   1726 
   1727 	/* If both drives supports DMA, take the lower mode */
   1728 	if ((drvp[0].drive_flags & DRIVE_DMA) &&
   1729 	    (drvp[1].drive_flags & DRIVE_DMA)) {
   1730 		mode[0] = mode[1] =
   1731 		    min(drvp[0].DMA_mode, drvp[1].DMA_mode);
   1732 		    drvp[0].DMA_mode = mode[0];
   1733 		    drvp[1].DMA_mode = mode[1];
   1734 		goto ok;
   1735 	}
   1736 	/*
   1737 	 * If only one drive supports DMA, use its mode, and
   1738 	 * put the other one in PIO mode 0 if mode not compatible
   1739 	 */
   1740 	if (drvp[0].drive_flags & DRIVE_DMA) {
   1741 		mode[0] = drvp[0].DMA_mode;
   1742 		mode[1] = drvp[1].PIO_mode;
   1743 		if (piix_isp_pio[mode[1]] != piix_isp_dma[mode[0]] ||
   1744 		    piix_rtc_pio[mode[1]] != piix_rtc_dma[mode[0]])
   1745 			mode[1] = drvp[1].PIO_mode = 0;
   1746 		goto ok;
   1747 	}
   1748 	if (drvp[1].drive_flags & DRIVE_DMA) {
   1749 		mode[1] = drvp[1].DMA_mode;
   1750 		mode[0] = drvp[0].PIO_mode;
   1751 		if (piix_isp_pio[mode[0]] != piix_isp_dma[mode[1]] ||
   1752 		    piix_rtc_pio[mode[0]] != piix_rtc_dma[mode[1]])
   1753 			mode[0] = drvp[0].PIO_mode = 0;
   1754 		goto ok;
   1755 	}
   1756 	/*
   1757 	 * If both drives are not DMA, takes the lower mode, unless
   1758 	 * one of them is PIO mode < 2
   1759 	 */
   1760 	if (drvp[0].PIO_mode < 2) {
   1761 		mode[0] = drvp[0].PIO_mode = 0;
   1762 		mode[1] = drvp[1].PIO_mode;
   1763 	} else if (drvp[1].PIO_mode < 2) {
   1764 		mode[1] = drvp[1].PIO_mode = 0;
   1765 		mode[0] = drvp[0].PIO_mode;
   1766 	} else {
   1767 		mode[0] = mode[1] =
   1768 		    min(drvp[1].PIO_mode, drvp[0].PIO_mode);
   1769 		drvp[0].PIO_mode = mode[0];
   1770 		drvp[1].PIO_mode = mode[1];
   1771 	}
   1772 ok:	/* The modes are setup */
   1773 	for (drive = 0; drive < 2; drive++) {
   1774 		if (drvp[drive].drive_flags & DRIVE_DMA) {
   1775 			idetim |= piix_setup_idetim_timings(
   1776 			    mode[drive], 1, chp->channel);
   1777 			goto end;
   1778 		}
   1779 	}
   1780 	/* If we are there, none of the drives are DMA */
   1781 	if (mode[0] >= 2)
   1782 		idetim |= piix_setup_idetim_timings(
   1783 		    mode[0], 0, chp->channel);
   1784 	else
   1785 		idetim |= piix_setup_idetim_timings(
   1786 		    mode[1], 0, chp->channel);
   1787 end:	/*
   1788 	 * timing mode is now set up in the controller. Enable
   1789 	 * it per-drive
   1790 	 */
   1791 	for (drive = 0; drive < 2; drive++) {
   1792 		/* If no drive, skip */
   1793 		if ((drvp[drive].drive_flags & DRIVE) == 0)
   1794 			continue;
   1795 		idetim |= piix_setup_idetim_drvs(&drvp[drive]);
   1796 		if (drvp[drive].drive_flags & DRIVE_DMA)
   1797 			idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
   1798 	}
   1799 	if (idedma_ctl != 0) {
   1800 		/* Add software bits in status register */
   1801 		bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   1802 		    IDEDMA_CTL + (IDEDMA_SCH_OFFSET * chp->channel),
   1803 		    idedma_ctl);
   1804 	}
   1805 	pci_conf_write(sc->sc_pc, sc->sc_tag, PIIX_IDETIM, idetim);
   1806 	pciide_print_modes(cp);
   1807 }
   1808 
   1809 void
   1810 piix3_4_setup_channel(chp)
   1811 	struct channel_softc *chp;
   1812 {
   1813 	struct ata_drive_datas *drvp;
   1814 	u_int32_t oidetim, idetim, sidetim, udmareg, ideconf, idedma_ctl;
   1815 	struct pciide_channel *cp = (struct pciide_channel*)chp;
   1816 	struct pciide_softc *sc = (struct pciide_softc *)cp->wdc_channel.wdc;
   1817 	int drive;
   1818 	int channel = chp->channel;
   1819 
   1820 	oidetim = pci_conf_read(sc->sc_pc, sc->sc_tag, PIIX_IDETIM);
   1821 	sidetim = pci_conf_read(sc->sc_pc, sc->sc_tag, PIIX_SIDETIM);
   1822 	udmareg = pci_conf_read(sc->sc_pc, sc->sc_tag, PIIX_UDMAREG);
   1823 	ideconf = pci_conf_read(sc->sc_pc, sc->sc_tag, PIIX_CONFIG);
   1824 	idetim = PIIX_IDETIM_CLEAR(oidetim, 0xffff, channel);
   1825 	sidetim &= ~(PIIX_SIDETIM_ISP_MASK(channel) |
   1826 	    PIIX_SIDETIM_RTC_MASK(channel));
   1827 
   1828 	idedma_ctl = 0;
   1829 	/* If channel disabled, no need to go further */
   1830 	if ((PIIX_IDETIM_READ(oidetim, channel) & PIIX_IDETIM_IDE) == 0)
   1831 		return;
   1832 	/* set up new idetim: Enable IDE registers decode */
   1833 	idetim = PIIX_IDETIM_SET(idetim, PIIX_IDETIM_IDE, channel);
   1834 
   1835 	/* setup DMA if needed */
   1836 	pciide_channel_dma_setup(cp);
   1837 
   1838 	for (drive = 0; drive < 2; drive++) {
   1839 		udmareg &= ~(PIIX_UDMACTL_DRV_EN(channel, drive) |
   1840 		    PIIX_UDMATIM_SET(0x3, channel, drive));
   1841 		drvp = &chp->ch_drive[drive];
   1842 		/* If no drive, skip */
   1843 		if ((drvp->drive_flags & DRIVE) == 0)
   1844 			continue;
   1845 		if (((drvp->drive_flags & DRIVE_DMA) == 0 &&
   1846 		    (drvp->drive_flags & DRIVE_UDMA) == 0))
   1847 			goto pio;
   1848 
   1849 		if (sc->sc_pp->ide_product == PCI_PRODUCT_INTEL_82801AA_IDE ||
   1850 		    sc->sc_pp->ide_product == PCI_PRODUCT_INTEL_82801AB_IDE ||
   1851 		    sc->sc_pp->ide_product == PCI_PRODUCT_INTEL_82801BA_IDE ||
   1852 		    sc->sc_pp->ide_product == PCI_PRODUCT_INTEL_82801BAM_IDE ||
   1853 		    sc->sc_pp->ide_product == PCI_PRODUCT_INTEL_82801CA_IDE_1 ||
   1854 		    sc->sc_pp->ide_product == PCI_PRODUCT_INTEL_82801CA_IDE_2 ||
   1855 		    sc->sc_pp->ide_product == PCI_PRODUCT_INTEL_82801DB_IDE) {
   1856 			ideconf |= PIIX_CONFIG_PINGPONG;
   1857 		}
   1858 		if (sc->sc_pp->ide_product == PCI_PRODUCT_INTEL_82801BA_IDE ||
   1859 		    sc->sc_pp->ide_product == PCI_PRODUCT_INTEL_82801BAM_IDE ||
   1860 		    sc->sc_pp->ide_product == PCI_PRODUCT_INTEL_82801CA_IDE_1 ||
   1861 		    sc->sc_pp->ide_product == PCI_PRODUCT_INTEL_82801CA_IDE_2 ||
   1862 		    sc->sc_pp->ide_product == PCI_PRODUCT_INTEL_82801DB_IDE) {
   1863 			/* setup Ultra/100 */
   1864 			if (drvp->UDMA_mode > 2 &&
   1865 			    (ideconf & PIIX_CONFIG_CR(channel, drive)) == 0)
   1866 				drvp->UDMA_mode = 2;
   1867 			if (drvp->UDMA_mode > 4) {
   1868 				ideconf |= PIIX_CONFIG_UDMA100(channel, drive);
   1869 			} else {
   1870 				ideconf &= ~PIIX_CONFIG_UDMA100(channel, drive);
   1871 				if (drvp->UDMA_mode > 2) {
   1872 					ideconf |= PIIX_CONFIG_UDMA66(channel,
   1873 					    drive);
   1874 				} else {
   1875 					ideconf &= ~PIIX_CONFIG_UDMA66(channel,
   1876 					    drive);
   1877 				}
   1878 			}
   1879 		}
   1880 		if (sc->sc_pp->ide_product == PCI_PRODUCT_INTEL_82801AA_IDE) {
   1881 			/* setup Ultra/66 */
   1882 			if (drvp->UDMA_mode > 2 &&
   1883 			    (ideconf & PIIX_CONFIG_CR(channel, drive)) == 0)
   1884 				drvp->UDMA_mode = 2;
   1885 			if (drvp->UDMA_mode > 2)
   1886 				ideconf |= PIIX_CONFIG_UDMA66(channel, drive);
   1887 			else
   1888 				ideconf &= ~PIIX_CONFIG_UDMA66(channel, drive);
   1889 		}
   1890 		if ((chp->wdc->cap & WDC_CAPABILITY_UDMA) &&
   1891 		    (drvp->drive_flags & DRIVE_UDMA)) {
   1892 			/* use Ultra/DMA */
   1893 			drvp->drive_flags &= ~DRIVE_DMA;
   1894 			udmareg |= PIIX_UDMACTL_DRV_EN( channel, drive);
   1895 			udmareg |= PIIX_UDMATIM_SET(
   1896 			    piix4_sct_udma[drvp->UDMA_mode], channel, drive);
   1897 		} else {
   1898 			/* use Multiword DMA */
   1899 			drvp->drive_flags &= ~DRIVE_UDMA;
   1900 			if (drive == 0) {
   1901 				idetim |= piix_setup_idetim_timings(
   1902 				    drvp->DMA_mode, 1, channel);
   1903 			} else {
   1904 				sidetim |= piix_setup_sidetim_timings(
   1905 					drvp->DMA_mode, 1, channel);
   1906 				idetim =PIIX_IDETIM_SET(idetim,
   1907 				    PIIX_IDETIM_SITRE, channel);
   1908 			}
   1909 		}
   1910 		idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
   1911 
   1912 pio:		/* use PIO mode */
   1913 		idetim |= piix_setup_idetim_drvs(drvp);
   1914 		if (drive == 0) {
   1915 			idetim |= piix_setup_idetim_timings(
   1916 			    drvp->PIO_mode, 0, channel);
   1917 		} else {
   1918 			sidetim |= piix_setup_sidetim_timings(
   1919 				drvp->PIO_mode, 0, channel);
   1920 			idetim =PIIX_IDETIM_SET(idetim,
   1921 			    PIIX_IDETIM_SITRE, channel);
   1922 		}
   1923 	}
   1924 	if (idedma_ctl != 0) {
   1925 		/* Add software bits in status register */
   1926 		bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   1927 		    IDEDMA_CTL + (IDEDMA_SCH_OFFSET * channel),
   1928 		    idedma_ctl);
   1929 	}
   1930 	pci_conf_write(sc->sc_pc, sc->sc_tag, PIIX_IDETIM, idetim);
   1931 	pci_conf_write(sc->sc_pc, sc->sc_tag, PIIX_SIDETIM, sidetim);
   1932 	pci_conf_write(sc->sc_pc, sc->sc_tag, PIIX_UDMAREG, udmareg);
   1933 	pci_conf_write(sc->sc_pc, sc->sc_tag, PIIX_CONFIG, ideconf);
   1934 	pciide_print_modes(cp);
   1935 }
   1936 
   1937 
   1938 /* setup ISP and RTC fields, based on mode */
   1939 static u_int32_t
   1940 piix_setup_idetim_timings(mode, dma, channel)
   1941 	u_int8_t mode;
   1942 	u_int8_t dma;
   1943 	u_int8_t channel;
   1944 {
   1945 
   1946 	if (dma)
   1947 		return PIIX_IDETIM_SET(0,
   1948 		    PIIX_IDETIM_ISP_SET(piix_isp_dma[mode]) |
   1949 		    PIIX_IDETIM_RTC_SET(piix_rtc_dma[mode]),
   1950 		    channel);
   1951 	else
   1952 		return PIIX_IDETIM_SET(0,
   1953 		    PIIX_IDETIM_ISP_SET(piix_isp_pio[mode]) |
   1954 		    PIIX_IDETIM_RTC_SET(piix_rtc_pio[mode]),
   1955 		    channel);
   1956 }
   1957 
   1958 /* setup DTE, PPE, IE and TIME field based on PIO mode */
   1959 static u_int32_t
   1960 piix_setup_idetim_drvs(drvp)
   1961 	struct ata_drive_datas *drvp;
   1962 {
   1963 	u_int32_t ret = 0;
   1964 	struct channel_softc *chp = drvp->chnl_softc;
   1965 	u_int8_t channel = chp->channel;
   1966 	u_int8_t drive = drvp->drive;
   1967 
   1968 	/*
   1969 	 * If drive is using UDMA, timings setups are independant
   1970 	 * So just check DMA and PIO here.
   1971 	 */
   1972 	if (drvp->drive_flags & DRIVE_DMA) {
   1973 		/* if mode = DMA mode 0, use compatible timings */
   1974 		if ((drvp->drive_flags & DRIVE_DMA) &&
   1975 		    drvp->DMA_mode == 0) {
   1976 			drvp->PIO_mode = 0;
   1977 			return ret;
   1978 		}
   1979 		ret = PIIX_IDETIM_SET(ret, PIIX_IDETIM_TIME(drive), channel);
   1980 		/*
   1981 		 * PIO and DMA timings are the same, use fast timings for PIO
   1982 		 * too, else use compat timings.
   1983 		 */
   1984 		if ((piix_isp_pio[drvp->PIO_mode] !=
   1985 		    piix_isp_dma[drvp->DMA_mode]) ||
   1986 		    (piix_rtc_pio[drvp->PIO_mode] !=
   1987 		    piix_rtc_dma[drvp->DMA_mode]))
   1988 			drvp->PIO_mode = 0;
   1989 		/* if PIO mode <= 2, use compat timings for PIO */
   1990 		if (drvp->PIO_mode <= 2) {
   1991 			ret = PIIX_IDETIM_SET(ret, PIIX_IDETIM_DTE(drive),
   1992 			    channel);
   1993 			return ret;
   1994 		}
   1995 	}
   1996 
   1997 	/*
   1998 	 * Now setup PIO modes. If mode < 2, use compat timings.
   1999 	 * Else enable fast timings. Enable IORDY and prefetch/post
   2000 	 * if PIO mode >= 3.
   2001 	 */
   2002 
   2003 	if (drvp->PIO_mode < 2)
   2004 		return ret;
   2005 
   2006 	ret = PIIX_IDETIM_SET(ret, PIIX_IDETIM_TIME(drive), channel);
   2007 	if (drvp->PIO_mode >= 3) {
   2008 		ret = PIIX_IDETIM_SET(ret, PIIX_IDETIM_IE(drive), channel);
   2009 		ret = PIIX_IDETIM_SET(ret, PIIX_IDETIM_PPE(drive), channel);
   2010 	}
   2011 	return ret;
   2012 }
   2013 
   2014 /* setup values in SIDETIM registers, based on mode */
   2015 static u_int32_t
   2016 piix_setup_sidetim_timings(mode, dma, channel)
   2017 	u_int8_t mode;
   2018 	u_int8_t dma;
   2019 	u_int8_t channel;
   2020 {
   2021 	if (dma)
   2022 		return PIIX_SIDETIM_ISP_SET(piix_isp_dma[mode], channel) |
   2023 		    PIIX_SIDETIM_RTC_SET(piix_rtc_dma[mode], channel);
   2024 	else
   2025 		return PIIX_SIDETIM_ISP_SET(piix_isp_pio[mode], channel) |
   2026 		    PIIX_SIDETIM_RTC_SET(piix_rtc_pio[mode], channel);
   2027 }
   2028 
   2029 void
   2030 amd7x6_chip_map(sc, pa)
   2031 	struct pciide_softc *sc;
   2032 	struct pci_attach_args *pa;
   2033 {
   2034 	struct pciide_channel *cp;
   2035 	pcireg_t interface = PCI_INTERFACE(pa->pa_class);
   2036 	int channel;
   2037 	pcireg_t chanenable;
   2038 	bus_size_t cmdsize, ctlsize;
   2039 
   2040 	if (pciide_chipen(sc, pa) == 0)
   2041 		return;
   2042 	printf("%s: bus-master DMA support present",
   2043 	    sc->sc_wdcdev.sc_dev.dv_xname);
   2044 	pciide_mapreg_dma(sc, pa);
   2045 	printf("\n");
   2046 	sc->sc_wdcdev.cap = WDC_CAPABILITY_DATA16 | WDC_CAPABILITY_DATA32 |
   2047 	    WDC_CAPABILITY_MODE;
   2048 	if (sc->sc_dma_ok) {
   2049 		sc->sc_wdcdev.cap |= WDC_CAPABILITY_DMA | WDC_CAPABILITY_UDMA;
   2050 		sc->sc_wdcdev.cap |= WDC_CAPABILITY_IRQACK;
   2051 		sc->sc_wdcdev.irqack = pciide_irqack;
   2052 	}
   2053 	sc->sc_wdcdev.PIO_cap = 4;
   2054 	sc->sc_wdcdev.DMA_cap = 2;
   2055 
   2056 	switch (sc->sc_pci_vendor) {
   2057 	case PCI_VENDOR_AMD:
   2058 		switch (sc->sc_pp->ide_product) {
   2059 		case PCI_PRODUCT_AMD_PBC766_IDE:
   2060 		case PCI_PRODUCT_AMD_PBC768_IDE:
   2061 		case PCI_PRODUCT_AMD_PBC8111_IDE:
   2062 			sc->sc_wdcdev.UDMA_cap = 5;
   2063 			break;
   2064 		default:
   2065 			sc->sc_wdcdev.UDMA_cap = 4;
   2066 		}
   2067 		sc->sc_amd_regbase = AMD7X6_AMD_REGBASE;
   2068 		break;
   2069 
   2070 	case PCI_VENDOR_NVIDIA:
   2071 		switch (sc->sc_pp->ide_product) {
   2072 		case PCI_PRODUCT_NVIDIA_NFORCE_ATA100:
   2073 			sc->sc_wdcdev.UDMA_cap = 5;
   2074 			break;
   2075 		case PCI_PRODUCT_NVIDIA_NFORCE2_ATA133:
   2076 			sc->sc_wdcdev.UDMA_cap = 6;
   2077 			break;
   2078 		}
   2079 		sc->sc_amd_regbase = AMD7X6_NVIDIA_REGBASE;
   2080 		break;
   2081 
   2082 	default:
   2083 		panic("amd7x6_chip_map: unknown vendor");
   2084 	}
   2085 	sc->sc_wdcdev.set_modes = amd7x6_setup_channel;
   2086 	sc->sc_wdcdev.channels = sc->wdc_chanarray;
   2087 	sc->sc_wdcdev.nchannels = PCIIDE_NUM_CHANNELS;
   2088 	chanenable = pci_conf_read(sc->sc_pc, sc->sc_tag,
   2089 	    AMD7X6_CHANSTATUS_EN(sc));
   2090 
   2091 	WDCDEBUG_PRINT(("amd7x6_chip_map: Channel enable=0x%x\n", chanenable),
   2092 	    DEBUG_PROBE);
   2093 	for (channel = 0; channel < sc->sc_wdcdev.nchannels; channel++) {
   2094 		cp = &sc->pciide_channels[channel];
   2095 		if (pciide_chansetup(sc, channel, interface) == 0)
   2096 			continue;
   2097 
   2098 		if ((chanenable & AMD7X6_CHAN_EN(channel)) == 0) {
   2099 			printf("%s: %s channel ignored (disabled)\n",
   2100 			    sc->sc_wdcdev.sc_dev.dv_xname, cp->name);
   2101 			continue;
   2102 		}
   2103 		pciide_mapchan(pa, cp, interface, &cmdsize, &ctlsize,
   2104 		    pciide_pci_intr);
   2105 
   2106 		if (pciide_chan_candisable(cp))
   2107 			chanenable &= ~AMD7X6_CHAN_EN(channel);
   2108 		pciide_map_compat_intr(pa, cp, channel, interface);
   2109 		if (cp->hw_ok == 0)
   2110 			continue;
   2111 
   2112 		amd7x6_setup_channel(&cp->wdc_channel);
   2113 	}
   2114 	pci_conf_write(sc->sc_pc, sc->sc_tag, AMD7X6_CHANSTATUS_EN(sc),
   2115 	    chanenable);
   2116 	return;
   2117 }
   2118 
   2119 void
   2120 amd7x6_setup_channel(chp)
   2121 	struct channel_softc *chp;
   2122 {
   2123 	u_int32_t udmatim_reg, datatim_reg;
   2124 	u_int8_t idedma_ctl;
   2125 	int mode, drive;
   2126 	struct ata_drive_datas *drvp;
   2127 	struct pciide_channel *cp = (struct pciide_channel*)chp;
   2128 	struct pciide_softc *sc = (struct pciide_softc *)cp->wdc_channel.wdc;
   2129 #ifndef PCIIDE_AMD756_ENABLEDMA
   2130 	int rev = PCI_REVISION(
   2131 	    pci_conf_read(sc->sc_pc, sc->sc_tag, PCI_CLASS_REG));
   2132 #endif
   2133 
   2134 	idedma_ctl = 0;
   2135 	datatim_reg = pci_conf_read(sc->sc_pc, sc->sc_tag, AMD7X6_DATATIM(sc));
   2136 	udmatim_reg = pci_conf_read(sc->sc_pc, sc->sc_tag, AMD7X6_UDMA(sc));
   2137 	datatim_reg &= ~AMD7X6_DATATIM_MASK(chp->channel);
   2138 	udmatim_reg &= ~AMD7X6_UDMA_MASK(chp->channel);
   2139 
   2140 	/* setup DMA if needed */
   2141 	pciide_channel_dma_setup(cp);
   2142 
   2143 	for (drive = 0; drive < 2; drive++) {
   2144 		drvp = &chp->ch_drive[drive];
   2145 		/* If no drive, skip */
   2146 		if ((drvp->drive_flags & DRIVE) == 0)
   2147 			continue;
   2148 		/* add timing values, setup DMA if needed */
   2149 		if (((drvp->drive_flags & DRIVE_DMA) == 0 &&
   2150 		    (drvp->drive_flags & DRIVE_UDMA) == 0)) {
   2151 			mode = drvp->PIO_mode;
   2152 			goto pio;
   2153 		}
   2154 		if ((chp->wdc->cap & WDC_CAPABILITY_UDMA) &&
   2155 		    (drvp->drive_flags & DRIVE_UDMA)) {
   2156 			/* use Ultra/DMA */
   2157 			drvp->drive_flags &= ~DRIVE_DMA;
   2158 			udmatim_reg |= AMD7X6_UDMA_EN(chp->channel, drive) |
   2159 			    AMD7X6_UDMA_EN_MTH(chp->channel, drive) |
   2160 			    AMD7X6_UDMA_TIME(chp->channel, drive,
   2161 				amd7x6_udma_tim[drvp->UDMA_mode]);
   2162 			/* can use PIO timings, MW DMA unused */
   2163 			mode = drvp->PIO_mode;
   2164 		} else {
   2165 			/* use Multiword DMA, but only if revision is OK */
   2166 			drvp->drive_flags &= ~DRIVE_UDMA;
   2167 #ifndef PCIIDE_AMD756_ENABLEDMA
   2168 			/*
   2169 			 * The workaround doesn't seem to be necessary
   2170 			 * with all drives, so it can be disabled by
   2171 			 * PCIIDE_AMD756_ENABLEDMA. It causes a hard hang if
   2172 			 * triggered.
   2173 			 */
   2174 			if (sc->sc_pci_vendor == PCI_VENDOR_AMD &&
   2175 			    sc->sc_pp->ide_product ==
   2176 			      PCI_PRODUCT_AMD_PBC756_IDE &&
   2177 			    AMD756_CHIPREV_DISABLEDMA(rev)) {
   2178 				printf("%s:%d:%d: multi-word DMA disabled due "
   2179 				    "to chip revision\n",
   2180 				    sc->sc_wdcdev.sc_dev.dv_xname,
   2181 				    chp->channel, drive);
   2182 				mode = drvp->PIO_mode;
   2183 				drvp->drive_flags &= ~DRIVE_DMA;
   2184 				goto pio;
   2185 			}
   2186 #endif
   2187 			/* mode = min(pio, dma+2) */
   2188 			if (drvp->PIO_mode <= (drvp->DMA_mode +2))
   2189 				mode = drvp->PIO_mode;
   2190 			else
   2191 				mode = drvp->DMA_mode + 2;
   2192 		}
   2193 		idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
   2194 
   2195 pio:		/* setup PIO mode */
   2196 		if (mode <= 2) {
   2197 			drvp->DMA_mode = 0;
   2198 			drvp->PIO_mode = 0;
   2199 			mode = 0;
   2200 		} else {
   2201 			drvp->PIO_mode = mode;
   2202 			drvp->DMA_mode = mode - 2;
   2203 		}
   2204 		datatim_reg |=
   2205 		    AMD7X6_DATATIM_PULSE(chp->channel, drive,
   2206 			amd7x6_pio_set[mode]) |
   2207 		    AMD7X6_DATATIM_RECOV(chp->channel, drive,
   2208 			amd7x6_pio_rec[mode]);
   2209 	}
   2210 	if (idedma_ctl != 0) {
   2211 		/* Add software bits in status register */
   2212 		bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   2213 		    IDEDMA_CTL + (IDEDMA_SCH_OFFSET * chp->channel),
   2214 		    idedma_ctl);
   2215 	}
   2216 	pciide_print_modes(cp);
   2217 	pci_conf_write(sc->sc_pc, sc->sc_tag, AMD7X6_DATATIM(sc), datatim_reg);
   2218 	pci_conf_write(sc->sc_pc, sc->sc_tag, AMD7X6_UDMA(sc), udmatim_reg);
   2219 }
   2220 
   2221 void
   2222 apollo_chip_map(sc, pa)
   2223 	struct pciide_softc *sc;
   2224 	struct pci_attach_args *pa;
   2225 {
   2226 	struct pciide_channel *cp;
   2227 	pcireg_t interface = PCI_INTERFACE(pa->pa_class);
   2228 	int channel;
   2229 	u_int32_t ideconf;
   2230 	bus_size_t cmdsize, ctlsize;
   2231 	pcitag_t pcib_tag;
   2232 	pcireg_t pcib_id, pcib_class;
   2233 
   2234 	if (pciide_chipen(sc, pa) == 0)
   2235 		return;
   2236 	/* get a PCI tag for the ISA bridge (function 0 of the same device) */
   2237 	pcib_tag = pci_make_tag(pa->pa_pc, pa->pa_bus, pa->pa_device, 0);
   2238 	/* and read ID and rev of the ISA bridge */
   2239 	pcib_id = pci_conf_read(sc->sc_pc, pcib_tag, PCI_ID_REG);
   2240 	pcib_class = pci_conf_read(sc->sc_pc, pcib_tag, PCI_CLASS_REG);
   2241 	printf(": VIA Technologies ");
   2242 	switch (PCI_PRODUCT(pcib_id)) {
   2243 	case PCI_PRODUCT_VIATECH_VT82C586_ISA:
   2244 		printf("VT82C586 (Apollo VP) ");
   2245 		if(PCI_REVISION(pcib_class) >= 0x02) {
   2246 			printf("ATA33 controller\n");
   2247 			sc->sc_wdcdev.UDMA_cap = 2;
   2248 		} else {
   2249 			printf("controller\n");
   2250 			sc->sc_wdcdev.UDMA_cap = 0;
   2251 		}
   2252 		break;
   2253 	case PCI_PRODUCT_VIATECH_VT82C596A:
   2254 		printf("VT82C596A (Apollo Pro) ");
   2255 		if (PCI_REVISION(pcib_class) >= 0x12) {
   2256 			printf("ATA66 controller\n");
   2257 			sc->sc_wdcdev.UDMA_cap = 4;
   2258 		} else {
   2259 			printf("ATA33 controller\n");
   2260 			sc->sc_wdcdev.UDMA_cap = 2;
   2261 		}
   2262 		break;
   2263 	case PCI_PRODUCT_VIATECH_VT82C686A_ISA:
   2264 		printf("VT82C686A (Apollo KX133) ");
   2265 		if (PCI_REVISION(pcib_class) >= 0x40) {
   2266 			printf("ATA100 controller\n");
   2267 			sc->sc_wdcdev.UDMA_cap = 5;
   2268 		} else {
   2269 			printf("ATA66 controller\n");
   2270 			sc->sc_wdcdev.UDMA_cap = 4;
   2271 		}
   2272 		break;
   2273 	case PCI_PRODUCT_VIATECH_VT8231:
   2274 		printf("VT8231 ATA100 controller\n");
   2275 		sc->sc_wdcdev.UDMA_cap = 5;
   2276 		break;
   2277 	case PCI_PRODUCT_VIATECH_VT8233:
   2278 		printf("VT8233 ATA100 controller\n");
   2279 		sc->sc_wdcdev.UDMA_cap = 5;
   2280 		break;
   2281 	case PCI_PRODUCT_VIATECH_VT8233A:
   2282 		printf("VT8233A ATA133 controller\n");
   2283 		sc->sc_wdcdev.UDMA_cap = 6;
   2284 		break;
   2285 	case PCI_PRODUCT_VIATECH_VT8235:
   2286 		printf("VT8235 ATA133 controller\n");
   2287 		sc->sc_wdcdev.UDMA_cap = 6;
   2288 		break;
   2289 	default:
   2290 		printf("unknown ATA controller\n");
   2291 		sc->sc_wdcdev.UDMA_cap = 0;
   2292 	}
   2293 
   2294 	printf("%s: bus-master DMA support present",
   2295 	    sc->sc_wdcdev.sc_dev.dv_xname);
   2296 	pciide_mapreg_dma(sc, pa);
   2297 	printf("\n");
   2298 	sc->sc_wdcdev.cap = WDC_CAPABILITY_DATA16 | WDC_CAPABILITY_DATA32 |
   2299 	    WDC_CAPABILITY_MODE;
   2300 	if (sc->sc_dma_ok) {
   2301 		sc->sc_wdcdev.cap |= WDC_CAPABILITY_DMA | WDC_CAPABILITY_IRQACK;
   2302 		sc->sc_wdcdev.irqack = pciide_irqack;
   2303 		if (sc->sc_wdcdev.UDMA_cap > 0)
   2304 			sc->sc_wdcdev.cap |= WDC_CAPABILITY_UDMA;
   2305 	}
   2306 	sc->sc_wdcdev.PIO_cap = 4;
   2307 	sc->sc_wdcdev.DMA_cap = 2;
   2308 	sc->sc_wdcdev.set_modes = apollo_setup_channel;
   2309 	sc->sc_wdcdev.channels = sc->wdc_chanarray;
   2310 	sc->sc_wdcdev.nchannels = PCIIDE_NUM_CHANNELS;
   2311 
   2312 	WDCDEBUG_PRINT(("apollo_chip_map: old APO_IDECONF=0x%x, "
   2313 	    "APO_CTLMISC=0x%x, APO_DATATIM=0x%x, APO_UDMA=0x%x\n",
   2314 	    pci_conf_read(sc->sc_pc, sc->sc_tag, APO_IDECONF),
   2315 	    pci_conf_read(sc->sc_pc, sc->sc_tag, APO_CTLMISC),
   2316 	    pci_conf_read(sc->sc_pc, sc->sc_tag, APO_DATATIM),
   2317 	    pci_conf_read(sc->sc_pc, sc->sc_tag, APO_UDMA)),
   2318 	    DEBUG_PROBE);
   2319 
   2320 	for (channel = 0; channel < sc->sc_wdcdev.nchannels; channel++) {
   2321 		cp = &sc->pciide_channels[channel];
   2322 		if (pciide_chansetup(sc, channel, interface) == 0)
   2323 			continue;
   2324 
   2325 		ideconf = pci_conf_read(sc->sc_pc, sc->sc_tag, APO_IDECONF);
   2326 		if ((ideconf & APO_IDECONF_EN(channel)) == 0) {
   2327 			printf("%s: %s channel ignored (disabled)\n",
   2328 			    sc->sc_wdcdev.sc_dev.dv_xname, cp->name);
   2329 			continue;
   2330 		}
   2331 		pciide_mapchan(pa, cp, interface, &cmdsize, &ctlsize,
   2332 		    pciide_pci_intr);
   2333 		if (cp->hw_ok == 0)
   2334 			continue;
   2335 		if (pciide_chan_candisable(cp)) {
   2336 			ideconf &= ~APO_IDECONF_EN(channel);
   2337 			pci_conf_write(sc->sc_pc, sc->sc_tag, APO_IDECONF,
   2338 			    ideconf);
   2339 		}
   2340 		pciide_map_compat_intr(pa, cp, channel, interface);
   2341 
   2342 		if (cp->hw_ok == 0)
   2343 			continue;
   2344 		apollo_setup_channel(&sc->pciide_channels[channel].wdc_channel);
   2345 	}
   2346 	WDCDEBUG_PRINT(("apollo_chip_map: APO_DATATIM=0x%x, APO_UDMA=0x%x\n",
   2347 	    pci_conf_read(sc->sc_pc, sc->sc_tag, APO_DATATIM),
   2348 	    pci_conf_read(sc->sc_pc, sc->sc_tag, APO_UDMA)), DEBUG_PROBE);
   2349 }
   2350 
   2351 void
   2352 apollo_setup_channel(chp)
   2353 	struct channel_softc *chp;
   2354 {
   2355 	u_int32_t udmatim_reg, datatim_reg;
   2356 	u_int8_t idedma_ctl;
   2357 	int mode, drive;
   2358 	struct ata_drive_datas *drvp;
   2359 	struct pciide_channel *cp = (struct pciide_channel*)chp;
   2360 	struct pciide_softc *sc = (struct pciide_softc *)cp->wdc_channel.wdc;
   2361 
   2362 	idedma_ctl = 0;
   2363 	datatim_reg = pci_conf_read(sc->sc_pc, sc->sc_tag, APO_DATATIM);
   2364 	udmatim_reg = pci_conf_read(sc->sc_pc, sc->sc_tag, APO_UDMA);
   2365 	datatim_reg &= ~APO_DATATIM_MASK(chp->channel);
   2366 	udmatim_reg &= ~APO_UDMA_MASK(chp->channel);
   2367 
   2368 	/* setup DMA if needed */
   2369 	pciide_channel_dma_setup(cp);
   2370 
   2371 	for (drive = 0; drive < 2; drive++) {
   2372 		drvp = &chp->ch_drive[drive];
   2373 		/* If no drive, skip */
   2374 		if ((drvp->drive_flags & DRIVE) == 0)
   2375 			continue;
   2376 		/* add timing values, setup DMA if needed */
   2377 		if (((drvp->drive_flags & DRIVE_DMA) == 0 &&
   2378 		    (drvp->drive_flags & DRIVE_UDMA) == 0)) {
   2379 			mode = drvp->PIO_mode;
   2380 			goto pio;
   2381 		}
   2382 		if ((chp->wdc->cap & WDC_CAPABILITY_UDMA) &&
   2383 		    (drvp->drive_flags & DRIVE_UDMA)) {
   2384 			/* use Ultra/DMA */
   2385 			drvp->drive_flags &= ~DRIVE_DMA;
   2386 			udmatim_reg |= APO_UDMA_EN(chp->channel, drive) |
   2387 			    APO_UDMA_EN_MTH(chp->channel, drive);
   2388 			if (sc->sc_wdcdev.UDMA_cap == 6) {
   2389 				/* 8233a */
   2390 				udmatim_reg |= APO_UDMA_TIME(chp->channel,
   2391 				    drive, apollo_udma133_tim[drvp->UDMA_mode]);
   2392 			} else if (sc->sc_wdcdev.UDMA_cap == 5) {
   2393 				/* 686b */
   2394 				udmatim_reg |= APO_UDMA_TIME(chp->channel,
   2395 				    drive, apollo_udma100_tim[drvp->UDMA_mode]);
   2396 			} else if (sc->sc_wdcdev.UDMA_cap == 4) {
   2397 				/* 596b or 686a */
   2398 				udmatim_reg |= APO_UDMA_CLK66(chp->channel);
   2399 				udmatim_reg |= APO_UDMA_TIME(chp->channel,
   2400 				    drive, apollo_udma66_tim[drvp->UDMA_mode]);
   2401 			} else {
   2402 				/* 596a or 586b */
   2403 				udmatim_reg |= APO_UDMA_TIME(chp->channel,
   2404 				    drive, apollo_udma33_tim[drvp->UDMA_mode]);
   2405 			}
   2406 			/* can use PIO timings, MW DMA unused */
   2407 			mode = drvp->PIO_mode;
   2408 		} else {
   2409 			/* use Multiword DMA */
   2410 			drvp->drive_flags &= ~DRIVE_UDMA;
   2411 			/* mode = min(pio, dma+2) */
   2412 			if (drvp->PIO_mode <= (drvp->DMA_mode +2))
   2413 				mode = drvp->PIO_mode;
   2414 			else
   2415 				mode = drvp->DMA_mode + 2;
   2416 		}
   2417 		idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
   2418 
   2419 pio:		/* setup PIO mode */
   2420 		if (mode <= 2) {
   2421 			drvp->DMA_mode = 0;
   2422 			drvp->PIO_mode = 0;
   2423 			mode = 0;
   2424 		} else {
   2425 			drvp->PIO_mode = mode;
   2426 			drvp->DMA_mode = mode - 2;
   2427 		}
   2428 		datatim_reg |=
   2429 		    APO_DATATIM_PULSE(chp->channel, drive,
   2430 			apollo_pio_set[mode]) |
   2431 		    APO_DATATIM_RECOV(chp->channel, drive,
   2432 			apollo_pio_rec[mode]);
   2433 	}
   2434 	if (idedma_ctl != 0) {
   2435 		/* Add software bits in status register */
   2436 		bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   2437 		    IDEDMA_CTL + (IDEDMA_SCH_OFFSET * chp->channel),
   2438 		    idedma_ctl);
   2439 	}
   2440 	pciide_print_modes(cp);
   2441 	pci_conf_write(sc->sc_pc, sc->sc_tag, APO_DATATIM, datatim_reg);
   2442 	pci_conf_write(sc->sc_pc, sc->sc_tag, APO_UDMA, udmatim_reg);
   2443 }
   2444 
   2445 void
   2446 cmd_channel_map(pa, sc, channel)
   2447 	struct pci_attach_args *pa;
   2448 	struct pciide_softc *sc;
   2449 	int channel;
   2450 {
   2451 	struct pciide_channel *cp = &sc->pciide_channels[channel];
   2452 	bus_size_t cmdsize, ctlsize;
   2453 	u_int8_t ctrl = pciide_pci_read(sc->sc_pc, sc->sc_tag, CMD_CTRL);
   2454 	int interface, one_channel;
   2455 
   2456 	/*
   2457 	 * The 0648/0649 can be told to identify as a RAID controller.
   2458 	 * In this case, we have to fake interface
   2459 	 */
   2460 	if (PCI_SUBCLASS(pa->pa_class) != PCI_SUBCLASS_MASS_STORAGE_IDE) {
   2461 		interface = PCIIDE_INTERFACE_SETTABLE(0) |
   2462 		    PCIIDE_INTERFACE_SETTABLE(1);
   2463 		if (pciide_pci_read(pa->pa_pc, pa->pa_tag, CMD_CONF) &
   2464 		    CMD_CONF_DSA1)
   2465 			interface |= PCIIDE_INTERFACE_PCI(0) |
   2466 			    PCIIDE_INTERFACE_PCI(1);
   2467 	} else {
   2468 		interface = PCI_INTERFACE(pa->pa_class);
   2469 	}
   2470 
   2471 	sc->wdc_chanarray[channel] = &cp->wdc_channel;
   2472 	cp->name = PCIIDE_CHANNEL_NAME(channel);
   2473 	cp->wdc_channel.channel = channel;
   2474 	cp->wdc_channel.wdc = &sc->sc_wdcdev;
   2475 
   2476 	/*
   2477 	 * Older CMD64X doesn't have independant channels
   2478 	 */
   2479 	switch (sc->sc_pp->ide_product) {
   2480 	case PCI_PRODUCT_CMDTECH_649:
   2481 		one_channel = 0;
   2482 		break;
   2483 	default:
   2484 		one_channel = 1;
   2485 		break;
   2486 	}
   2487 
   2488 	if (channel > 0 && one_channel) {
   2489 		cp->wdc_channel.ch_queue =
   2490 		    sc->pciide_channels[0].wdc_channel.ch_queue;
   2491 	} else {
   2492 		cp->wdc_channel.ch_queue =
   2493 		    malloc(sizeof(struct channel_queue), M_DEVBUF, M_NOWAIT);
   2494 	}
   2495 	if (cp->wdc_channel.ch_queue == NULL) {
   2496 		printf("%s %s channel: "
   2497 		    "can't allocate memory for command queue",
   2498 		    sc->sc_wdcdev.sc_dev.dv_xname, cp->name);
   2499 		    return;
   2500 	}
   2501 
   2502 	printf("%s: %s channel %s to %s mode\n",
   2503 	    sc->sc_wdcdev.sc_dev.dv_xname, cp->name,
   2504 	    (interface & PCIIDE_INTERFACE_SETTABLE(channel)) ?
   2505 	    "configured" : "wired",
   2506 	    (interface & PCIIDE_INTERFACE_PCI(channel)) ?
   2507 	    "native-PCI" : "compatibility");
   2508 
   2509 	/*
   2510 	 * with a CMD PCI64x, if we get here, the first channel is enabled:
   2511 	 * there's no way to disable the first channel without disabling
   2512 	 * the whole device
   2513 	 */
   2514 	if (channel != 0 && (ctrl & CMD_CTRL_2PORT) == 0) {
   2515 		printf("%s: %s channel ignored (disabled)\n",
   2516 		    sc->sc_wdcdev.sc_dev.dv_xname, cp->name);
   2517 		return;
   2518 	}
   2519 
   2520 	pciide_mapchan(pa, cp, interface, &cmdsize, &ctlsize, cmd_pci_intr);
   2521 	if (cp->hw_ok == 0)
   2522 		return;
   2523 	if (channel == 1) {
   2524 		if (pciide_chan_candisable(cp)) {
   2525 			ctrl &= ~CMD_CTRL_2PORT;
   2526 			pciide_pci_write(pa->pa_pc, pa->pa_tag,
   2527 			    CMD_CTRL, ctrl);
   2528 		}
   2529 	}
   2530 	pciide_map_compat_intr(pa, cp, channel, interface);
   2531 }
   2532 
   2533 int
   2534 cmd_pci_intr(arg)
   2535 	void *arg;
   2536 {
   2537 	struct pciide_softc *sc = arg;
   2538 	struct pciide_channel *cp;
   2539 	struct channel_softc *wdc_cp;
   2540 	int i, rv, crv;
   2541 	u_int32_t priirq, secirq;
   2542 
   2543 	rv = 0;
   2544 	priirq = pciide_pci_read(sc->sc_pc, sc->sc_tag, CMD_CONF);
   2545 	secirq = pciide_pci_read(sc->sc_pc, sc->sc_tag, CMD_ARTTIM23);
   2546 	for (i = 0; i < sc->sc_wdcdev.nchannels; i++) {
   2547 		cp = &sc->pciide_channels[i];
   2548 		wdc_cp = &cp->wdc_channel;
   2549 		/* If a compat channel skip. */
   2550 		if (cp->compat)
   2551 			continue;
   2552 		if ((i == 0 && (priirq & CMD_CONF_DRV0_INTR)) ||
   2553 		    (i == 1 && (secirq & CMD_ARTTIM23_IRQ))) {
   2554 			crv = wdcintr(wdc_cp);
   2555 			if (crv == 0)
   2556 				printf("%s:%d: bogus intr\n",
   2557 				    sc->sc_wdcdev.sc_dev.dv_xname, i);
   2558 			else
   2559 				rv = 1;
   2560 		}
   2561 	}
   2562 	return rv;
   2563 }
   2564 
   2565 void
   2566 cmd_chip_map(sc, pa)
   2567 	struct pciide_softc *sc;
   2568 	struct pci_attach_args *pa;
   2569 {
   2570 	int channel;
   2571 
   2572 	/*
   2573 	 * For a CMD PCI064x, the use of PCI_COMMAND_IO_ENABLE
   2574 	 * and base adresses registers can be disabled at
   2575 	 * hardware level. In this case, the device is wired
   2576 	 * in compat mode and its first channel is always enabled,
   2577 	 * but we can't rely on PCI_COMMAND_IO_ENABLE.
   2578 	 * In fact, it seems that the first channel of the CMD PCI0640
   2579 	 * can't be disabled.
   2580 	 */
   2581 
   2582 #ifdef PCIIDE_CMD064x_DISABLE
   2583 	if (pciide_chipen(sc, pa) == 0)
   2584 		return;
   2585 #endif
   2586 
   2587 	printf("%s: hardware does not support DMA\n",
   2588 	    sc->sc_wdcdev.sc_dev.dv_xname);
   2589 	sc->sc_dma_ok = 0;
   2590 
   2591 	sc->sc_wdcdev.channels = sc->wdc_chanarray;
   2592 	sc->sc_wdcdev.nchannels = PCIIDE_NUM_CHANNELS;
   2593 	sc->sc_wdcdev.cap = WDC_CAPABILITY_DATA16;
   2594 
   2595 	for (channel = 0; channel < sc->sc_wdcdev.nchannels; channel++) {
   2596 		cmd_channel_map(pa, sc, channel);
   2597 	}
   2598 }
   2599 
   2600 void
   2601 cmd0643_9_chip_map(sc, pa)
   2602 	struct pciide_softc *sc;
   2603 	struct pci_attach_args *pa;
   2604 {
   2605 	struct pciide_channel *cp;
   2606 	int channel;
   2607 	pcireg_t rev = PCI_REVISION(pa->pa_class);
   2608 
   2609 	/*
   2610 	 * For a CMD PCI064x, the use of PCI_COMMAND_IO_ENABLE
   2611 	 * and base adresses registers can be disabled at
   2612 	 * hardware level. In this case, the device is wired
   2613 	 * in compat mode and its first channel is always enabled,
   2614 	 * but we can't rely on PCI_COMMAND_IO_ENABLE.
   2615 	 * In fact, it seems that the first channel of the CMD PCI0640
   2616 	 * can't be disabled.
   2617 	 */
   2618 
   2619 #ifdef PCIIDE_CMD064x_DISABLE
   2620 	if (pciide_chipen(sc, pa) == 0)
   2621 		return;
   2622 #endif
   2623 	printf("%s: bus-master DMA support present",
   2624 	    sc->sc_wdcdev.sc_dev.dv_xname);
   2625 	pciide_mapreg_dma(sc, pa);
   2626 	printf("\n");
   2627 	sc->sc_wdcdev.cap = WDC_CAPABILITY_DATA16 | WDC_CAPABILITY_DATA32 |
   2628 	    WDC_CAPABILITY_MODE;
   2629 	if (sc->sc_dma_ok) {
   2630 		sc->sc_wdcdev.cap |= WDC_CAPABILITY_DMA | WDC_CAPABILITY_IRQACK;
   2631 		switch (sc->sc_pp->ide_product) {
   2632 		case PCI_PRODUCT_CMDTECH_649:
   2633 			sc->sc_wdcdev.cap |= WDC_CAPABILITY_UDMA;
   2634 			sc->sc_wdcdev.UDMA_cap = 5;
   2635 			sc->sc_wdcdev.irqack = cmd646_9_irqack;
   2636 			break;
   2637 		case PCI_PRODUCT_CMDTECH_648:
   2638 			sc->sc_wdcdev.cap |= WDC_CAPABILITY_UDMA;
   2639 			sc->sc_wdcdev.UDMA_cap = 4;
   2640 			sc->sc_wdcdev.irqack = cmd646_9_irqack;
   2641 			break;
   2642 		case PCI_PRODUCT_CMDTECH_646:
   2643 			if (rev >= CMD0646U2_REV) {
   2644 				sc->sc_wdcdev.cap |= WDC_CAPABILITY_UDMA;
   2645 				sc->sc_wdcdev.UDMA_cap = 2;
   2646 			} else if (rev >= CMD0646U_REV) {
   2647 			/*
   2648 			 * Linux's driver claims that the 646U is broken
   2649 			 * with UDMA. Only enable it if we know what we're
   2650 			 * doing
   2651 			 */
   2652 #ifdef PCIIDE_CMD0646U_ENABLEUDMA
   2653 				sc->sc_wdcdev.cap |= WDC_CAPABILITY_UDMA;
   2654 				sc->sc_wdcdev.UDMA_cap = 2;
   2655 #endif
   2656 				/* explicitly disable UDMA */
   2657 				pciide_pci_write(sc->sc_pc, sc->sc_tag,
   2658 				    CMD_UDMATIM(0), 0);
   2659 				pciide_pci_write(sc->sc_pc, sc->sc_tag,
   2660 				    CMD_UDMATIM(1), 0);
   2661 			}
   2662 			sc->sc_wdcdev.irqack = cmd646_9_irqack;
   2663 			break;
   2664 		default:
   2665 			sc->sc_wdcdev.irqack = pciide_irqack;
   2666 		}
   2667 	}
   2668 
   2669 	sc->sc_wdcdev.channels = sc->wdc_chanarray;
   2670 	sc->sc_wdcdev.nchannels = PCIIDE_NUM_CHANNELS;
   2671 	sc->sc_wdcdev.PIO_cap = 4;
   2672 	sc->sc_wdcdev.DMA_cap = 2;
   2673 	sc->sc_wdcdev.set_modes = cmd0643_9_setup_channel;
   2674 
   2675 	WDCDEBUG_PRINT(("cmd0643_9_chip_map: old timings reg 0x%x 0x%x\n",
   2676 		pci_conf_read(sc->sc_pc, sc->sc_tag, 0x54),
   2677 		pci_conf_read(sc->sc_pc, sc->sc_tag, 0x58)),
   2678 		DEBUG_PROBE);
   2679 
   2680 	for (channel = 0; channel < sc->sc_wdcdev.nchannels; channel++) {
   2681 		cp = &sc->pciide_channels[channel];
   2682 		cmd_channel_map(pa, sc, channel);
   2683 		if (cp->hw_ok == 0)
   2684 			continue;
   2685 		cmd0643_9_setup_channel(&cp->wdc_channel);
   2686 	}
   2687 	/*
   2688 	 * note - this also makes sure we clear the irq disable and reset
   2689 	 * bits
   2690 	 */
   2691 	pciide_pci_write(sc->sc_pc, sc->sc_tag, CMD_DMA_MODE, CMD_DMA_MULTIPLE);
   2692 	WDCDEBUG_PRINT(("cmd0643_9_chip_map: timings reg now 0x%x 0x%x\n",
   2693 	    pci_conf_read(sc->sc_pc, sc->sc_tag, 0x54),
   2694 	    pci_conf_read(sc->sc_pc, sc->sc_tag, 0x58)),
   2695 	    DEBUG_PROBE);
   2696 }
   2697 
   2698 void
   2699 cmd0643_9_setup_channel(chp)
   2700 	struct channel_softc *chp;
   2701 {
   2702 	struct ata_drive_datas *drvp;
   2703 	u_int8_t tim;
   2704 	u_int32_t idedma_ctl, udma_reg;
   2705 	int drive;
   2706 	struct pciide_channel *cp = (struct pciide_channel*)chp;
   2707 	struct pciide_softc *sc = (struct pciide_softc *)cp->wdc_channel.wdc;
   2708 
   2709 	idedma_ctl = 0;
   2710 	/* setup DMA if needed */
   2711 	pciide_channel_dma_setup(cp);
   2712 
   2713 	for (drive = 0; drive < 2; drive++) {
   2714 		drvp = &chp->ch_drive[drive];
   2715 		/* If no drive, skip */
   2716 		if ((drvp->drive_flags & DRIVE) == 0)
   2717 			continue;
   2718 		/* add timing values, setup DMA if needed */
   2719 		tim = cmd0643_9_data_tim_pio[drvp->PIO_mode];
   2720 		if (drvp->drive_flags & (DRIVE_DMA | DRIVE_UDMA)) {
   2721 			if (drvp->drive_flags & DRIVE_UDMA) {
   2722 				/* UltraDMA on a 646U2, 0648 or 0649 */
   2723 				drvp->drive_flags &= ~DRIVE_DMA;
   2724 				udma_reg = pciide_pci_read(sc->sc_pc,
   2725 				    sc->sc_tag, CMD_UDMATIM(chp->channel));
   2726 				if (drvp->UDMA_mode > 2 &&
   2727 				    (pciide_pci_read(sc->sc_pc, sc->sc_tag,
   2728 				    CMD_BICSR) &
   2729 				    CMD_BICSR_80(chp->channel)) == 0)
   2730 					drvp->UDMA_mode = 2;
   2731 				if (drvp->UDMA_mode > 2)
   2732 					udma_reg &= ~CMD_UDMATIM_UDMA33(drive);
   2733 				else if (sc->sc_wdcdev.UDMA_cap > 2)
   2734 					udma_reg |= CMD_UDMATIM_UDMA33(drive);
   2735 				udma_reg |= CMD_UDMATIM_UDMA(drive);
   2736 				udma_reg &= ~(CMD_UDMATIM_TIM_MASK <<
   2737 				    CMD_UDMATIM_TIM_OFF(drive));
   2738 				udma_reg |=
   2739 				    (cmd0646_9_tim_udma[drvp->UDMA_mode] <<
   2740 				    CMD_UDMATIM_TIM_OFF(drive));
   2741 				pciide_pci_write(sc->sc_pc, sc->sc_tag,
   2742 				    CMD_UDMATIM(chp->channel), udma_reg);
   2743 			} else {
   2744 				/*
   2745 				 * use Multiword DMA.
   2746 				 * Timings will be used for both PIO and DMA,
   2747 				 * so adjust DMA mode if needed
   2748 				 * if we have a 0646U2/8/9, turn off UDMA
   2749 				 */
   2750 				if (sc->sc_wdcdev.cap & WDC_CAPABILITY_UDMA) {
   2751 					udma_reg = pciide_pci_read(sc->sc_pc,
   2752 					    sc->sc_tag,
   2753 					    CMD_UDMATIM(chp->channel));
   2754 					udma_reg &= ~CMD_UDMATIM_UDMA(drive);
   2755 					pciide_pci_write(sc->sc_pc, sc->sc_tag,
   2756 					    CMD_UDMATIM(chp->channel),
   2757 					    udma_reg);
   2758 				}
   2759 				if (drvp->PIO_mode >= 3 &&
   2760 				    (drvp->DMA_mode + 2) > drvp->PIO_mode) {
   2761 					drvp->DMA_mode = drvp->PIO_mode - 2;
   2762 				}
   2763 				tim = cmd0643_9_data_tim_dma[drvp->DMA_mode];
   2764 			}
   2765 			idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
   2766 		}
   2767 		pciide_pci_write(sc->sc_pc, sc->sc_tag,
   2768 		    CMD_DATA_TIM(chp->channel, drive), tim);
   2769 	}
   2770 	if (idedma_ctl != 0) {
   2771 		/* Add software bits in status register */
   2772 		bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   2773 		    IDEDMA_CTL + (IDEDMA_SCH_OFFSET * chp->channel),
   2774 		    idedma_ctl);
   2775 	}
   2776 	pciide_print_modes(cp);
   2777 }
   2778 
   2779 void
   2780 cmd646_9_irqack(chp)
   2781 	struct channel_softc *chp;
   2782 {
   2783 	u_int32_t priirq, secirq;
   2784 	struct pciide_channel *cp = (struct pciide_channel*)chp;
   2785 	struct pciide_softc *sc = (struct pciide_softc *)cp->wdc_channel.wdc;
   2786 
   2787 	if (chp->channel == 0) {
   2788 		priirq = pciide_pci_read(sc->sc_pc, sc->sc_tag, CMD_CONF);
   2789 		pciide_pci_write(sc->sc_pc, sc->sc_tag, CMD_CONF, priirq);
   2790 	} else {
   2791 		secirq = pciide_pci_read(sc->sc_pc, sc->sc_tag, CMD_ARTTIM23);
   2792 		pciide_pci_write(sc->sc_pc, sc->sc_tag, CMD_ARTTIM23, secirq);
   2793 	}
   2794 	pciide_irqack(chp);
   2795 }
   2796 
   2797 void
   2798 cmd680_chip_map(sc, pa)
   2799 	struct pciide_softc *sc;
   2800 	struct pci_attach_args *pa;
   2801 {
   2802 	struct pciide_channel *cp;
   2803 	int channel;
   2804 
   2805 	if (pciide_chipen(sc, pa) == 0)
   2806 		return;
   2807 	printf("%s: bus-master DMA support present",
   2808 	    sc->sc_wdcdev.sc_dev.dv_xname);
   2809 	pciide_mapreg_dma(sc, pa);
   2810 	printf("\n");
   2811 	sc->sc_wdcdev.cap = WDC_CAPABILITY_DATA16 | WDC_CAPABILITY_DATA32 |
   2812 	    WDC_CAPABILITY_MODE;
   2813 	if (sc->sc_dma_ok) {
   2814 		sc->sc_wdcdev.cap |= WDC_CAPABILITY_DMA | WDC_CAPABILITY_IRQACK;
   2815 		sc->sc_wdcdev.cap |= WDC_CAPABILITY_UDMA;
   2816 		sc->sc_wdcdev.UDMA_cap = 6;
   2817 		sc->sc_wdcdev.irqack = pciide_irqack;
   2818 	}
   2819 
   2820 	sc->sc_wdcdev.channels = sc->wdc_chanarray;
   2821 	sc->sc_wdcdev.nchannels = PCIIDE_NUM_CHANNELS;
   2822 	sc->sc_wdcdev.PIO_cap = 4;
   2823 	sc->sc_wdcdev.DMA_cap = 2;
   2824 	sc->sc_wdcdev.set_modes = cmd680_setup_channel;
   2825 
   2826 	pciide_pci_write(sc->sc_pc, sc->sc_tag, 0x80, 0x00);
   2827 	pciide_pci_write(sc->sc_pc, sc->sc_tag, 0x84, 0x00);
   2828 	pciide_pci_write(sc->sc_pc, sc->sc_tag, 0x8a,
   2829 	    pciide_pci_read(sc->sc_pc, sc->sc_tag, 0x8a) | 0x01);
   2830 	for (channel = 0; channel < sc->sc_wdcdev.nchannels; channel++) {
   2831 		cp = &sc->pciide_channels[channel];
   2832 		cmd680_channel_map(pa, sc, channel);
   2833 		if (cp->hw_ok == 0)
   2834 			continue;
   2835 		cmd680_setup_channel(&cp->wdc_channel);
   2836 	}
   2837 }
   2838 
   2839 void
   2840 cmd680_channel_map(pa, sc, channel)
   2841 	struct pci_attach_args *pa;
   2842 	struct pciide_softc *sc;
   2843 	int channel;
   2844 {
   2845 	struct pciide_channel *cp = &sc->pciide_channels[channel];
   2846 	bus_size_t cmdsize, ctlsize;
   2847 	int interface, i, reg;
   2848 	static const u_int8_t init_val[] =
   2849 	    {             0x8a, 0x32, 0x8a, 0x32, 0x8a, 0x32,
   2850 	      0x92, 0x43, 0x92, 0x43, 0x09, 0x40, 0x09, 0x40 };
   2851 
   2852 	if (PCI_SUBCLASS(pa->pa_class) != PCI_SUBCLASS_MASS_STORAGE_IDE) {
   2853 		interface = PCIIDE_INTERFACE_SETTABLE(0) |
   2854 		    PCIIDE_INTERFACE_SETTABLE(1);
   2855 		interface |= PCIIDE_INTERFACE_PCI(0) |
   2856 		    PCIIDE_INTERFACE_PCI(1);
   2857 	} else {
   2858 		interface = PCI_INTERFACE(pa->pa_class);
   2859 	}
   2860 
   2861 	sc->wdc_chanarray[channel] = &cp->wdc_channel;
   2862 	cp->name = PCIIDE_CHANNEL_NAME(channel);
   2863 	cp->wdc_channel.channel = channel;
   2864 	cp->wdc_channel.wdc = &sc->sc_wdcdev;
   2865 
   2866 	cp->wdc_channel.ch_queue =
   2867 	    malloc(sizeof(struct channel_queue), M_DEVBUF, M_NOWAIT);
   2868 	if (cp->wdc_channel.ch_queue == NULL) {
   2869 		printf("%s %s channel: "
   2870 		    "can't allocate memory for command queue",
   2871 		    sc->sc_wdcdev.sc_dev.dv_xname, cp->name);
   2872 		    return;
   2873 	}
   2874 
   2875 	/* XXX */
   2876 	reg = 0xa2 + channel * 16;
   2877 	for (i = 0; i < sizeof(init_val); i++)
   2878 		pciide_pci_write(sc->sc_pc, sc->sc_tag, reg + i, init_val[i]);
   2879 
   2880 	printf("%s: %s channel %s to %s mode\n",
   2881 	    sc->sc_wdcdev.sc_dev.dv_xname, cp->name,
   2882 	    (interface & PCIIDE_INTERFACE_SETTABLE(channel)) ?
   2883 	    "configured" : "wired",
   2884 	    (interface & PCIIDE_INTERFACE_PCI(channel)) ?
   2885 	    "native-PCI" : "compatibility");
   2886 
   2887 	pciide_mapchan(pa, cp, interface, &cmdsize, &ctlsize, pciide_pci_intr);
   2888 	if (cp->hw_ok == 0)
   2889 		return;
   2890 	pciide_map_compat_intr(pa, cp, channel, interface);
   2891 }
   2892 
   2893 void
   2894 cmd680_setup_channel(chp)
   2895 	struct channel_softc *chp;
   2896 {
   2897 	struct ata_drive_datas *drvp;
   2898 	u_int8_t mode, off, scsc;
   2899 	u_int16_t val;
   2900 	u_int32_t idedma_ctl;
   2901 	int drive;
   2902 	struct pciide_channel *cp = (struct pciide_channel*)chp;
   2903 	struct pciide_softc *sc = (struct pciide_softc *)cp->wdc_channel.wdc;
   2904 	pci_chipset_tag_t pc = sc->sc_pc;
   2905 	pcitag_t pa = sc->sc_tag;
   2906 	static const u_int8_t udma2_tbl[] =
   2907 	    { 0x0f, 0x0b, 0x07, 0x06, 0x03, 0x02, 0x01 };
   2908 	static const u_int8_t udma_tbl[] =
   2909 	    { 0x0c, 0x07, 0x05, 0x04, 0x02, 0x01, 0x00 };
   2910 	static const u_int16_t dma_tbl[] =
   2911 	    { 0x2208, 0x10c2, 0x10c1 };
   2912 	static const u_int16_t pio_tbl[] =
   2913 	    { 0x328a, 0x2283, 0x1104, 0x10c3, 0x10c1 };
   2914 
   2915 	idedma_ctl = 0;
   2916 	pciide_channel_dma_setup(cp);
   2917 	mode = pciide_pci_read(pc, pa, 0x80 + chp->channel * 4);
   2918 
   2919 	for (drive = 0; drive < 2; drive++) {
   2920 		drvp = &chp->ch_drive[drive];
   2921 		/* If no drive, skip */
   2922 		if ((drvp->drive_flags & DRIVE) == 0)
   2923 			continue;
   2924 		mode &= ~(0x03 << (drive * 4));
   2925 		if (drvp->drive_flags & DRIVE_UDMA) {
   2926 			drvp->drive_flags &= ~DRIVE_DMA;
   2927 			off = 0xa0 + chp->channel * 16;
   2928 			if (drvp->UDMA_mode > 2 &&
   2929 			    (pciide_pci_read(pc, pa, off) & 0x01) == 0)
   2930 				drvp->UDMA_mode = 2;
   2931 			scsc = pciide_pci_read(pc, pa, 0x8a);
   2932 			if (drvp->UDMA_mode == 6 && (scsc & 0x30) == 0) {
   2933 				pciide_pci_write(pc, pa, 0x8a, scsc | 0x01);
   2934 				scsc = pciide_pci_read(pc, pa, 0x8a);
   2935 				if ((scsc & 0x30) == 0)
   2936 					drvp->UDMA_mode = 5;
   2937 			}
   2938 			mode |= 0x03 << (drive * 4);
   2939 			off = 0xac + chp->channel * 16 + drive * 2;
   2940 			val = pciide_pci_read(pc, pa, off) & ~0x3f;
   2941 			if (scsc & 0x30)
   2942 				val |= udma2_tbl[drvp->UDMA_mode];
   2943 			else
   2944 				val |= udma_tbl[drvp->UDMA_mode];
   2945 			pciide_pci_write(pc, pa, off, val);
   2946 			idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
   2947 		} else if (drvp->drive_flags & DRIVE_DMA) {
   2948 			mode |= 0x02 << (drive * 4);
   2949 			off = 0xa8 + chp->channel * 16 + drive * 2;
   2950 			val = dma_tbl[drvp->DMA_mode];
   2951 			pciide_pci_write(pc, pa, off, val & 0xff);
   2952 			pciide_pci_write(pc, pa, off, val >> 8);
   2953 			idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
   2954 		} else {
   2955 			mode |= 0x01 << (drive * 4);
   2956 			off = 0xa4 + chp->channel * 16 + drive * 2;
   2957 			val = pio_tbl[drvp->PIO_mode];
   2958 			pciide_pci_write(pc, pa, off, val & 0xff);
   2959 			pciide_pci_write(pc, pa, off, val >> 8);
   2960 		}
   2961 	}
   2962 
   2963 	pciide_pci_write(pc, pa, 0x80 + chp->channel * 4, mode);
   2964 	if (idedma_ctl != 0) {
   2965 		/* Add software bits in status register */
   2966 		bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   2967 		    IDEDMA_CTL + (IDEDMA_SCH_OFFSET * chp->channel),
   2968 		    idedma_ctl);
   2969 	}
   2970 	pciide_print_modes(cp);
   2971 }
   2972 
   2973 void
   2974 cy693_chip_map(sc, pa)
   2975 	struct pciide_softc *sc;
   2976 	struct pci_attach_args *pa;
   2977 {
   2978 	struct pciide_channel *cp;
   2979 	pcireg_t interface = PCI_INTERFACE(pa->pa_class);
   2980 	bus_size_t cmdsize, ctlsize;
   2981 
   2982 	if (pciide_chipen(sc, pa) == 0)
   2983 		return;
   2984 	/*
   2985 	 * this chip has 2 PCI IDE functions, one for primary and one for
   2986 	 * secondary. So we need to call pciide_mapregs_compat() with
   2987 	 * the real channel
   2988 	 */
   2989 	if (pa->pa_function == 1) {
   2990 		sc->sc_cy_compatchan = 0;
   2991 	} else if (pa->pa_function == 2) {
   2992 		sc->sc_cy_compatchan = 1;
   2993 	} else {
   2994 		printf("%s: unexpected PCI function %d\n",
   2995 		    sc->sc_wdcdev.sc_dev.dv_xname, pa->pa_function);
   2996 		return;
   2997 	}
   2998 	if (interface & PCIIDE_INTERFACE_BUS_MASTER_DMA) {
   2999 		printf("%s: bus-master DMA support present",
   3000 		    sc->sc_wdcdev.sc_dev.dv_xname);
   3001 		pciide_mapreg_dma(sc, pa);
   3002 	} else {
   3003 		printf("%s: hardware does not support DMA",
   3004 		    sc->sc_wdcdev.sc_dev.dv_xname);
   3005 		sc->sc_dma_ok = 0;
   3006 	}
   3007 	printf("\n");
   3008 
   3009 	sc->sc_cy_handle = cy82c693_init(pa->pa_iot);
   3010 	if (sc->sc_cy_handle == NULL) {
   3011 		printf("%s: unable to map hyperCache control registers\n",
   3012 		    sc->sc_wdcdev.sc_dev.dv_xname);
   3013 		sc->sc_dma_ok = 0;
   3014 	}
   3015 
   3016 	sc->sc_wdcdev.cap = WDC_CAPABILITY_DATA16 | WDC_CAPABILITY_DATA32 |
   3017 	    WDC_CAPABILITY_MODE;
   3018 	if (sc->sc_dma_ok) {
   3019 		sc->sc_wdcdev.cap |= WDC_CAPABILITY_DMA | WDC_CAPABILITY_IRQACK;
   3020 		sc->sc_wdcdev.irqack = pciide_irqack;
   3021 	}
   3022 	sc->sc_wdcdev.PIO_cap = 4;
   3023 	sc->sc_wdcdev.DMA_cap = 2;
   3024 	sc->sc_wdcdev.set_modes = cy693_setup_channel;
   3025 
   3026 	sc->sc_wdcdev.channels = sc->wdc_chanarray;
   3027 	sc->sc_wdcdev.nchannels = 1;
   3028 
   3029 	/* Only one channel for this chip; if we are here it's enabled */
   3030 	cp = &sc->pciide_channels[0];
   3031 	sc->wdc_chanarray[0] = &cp->wdc_channel;
   3032 	cp->name = PCIIDE_CHANNEL_NAME(0);
   3033 	cp->wdc_channel.channel = 0;
   3034 	cp->wdc_channel.wdc = &sc->sc_wdcdev;
   3035 	cp->wdc_channel.ch_queue =
   3036 	    malloc(sizeof(struct channel_queue), M_DEVBUF, M_NOWAIT);
   3037 	if (cp->wdc_channel.ch_queue == NULL) {
   3038 		printf("%s primary channel: "
   3039 		    "can't allocate memory for command queue",
   3040 		sc->sc_wdcdev.sc_dev.dv_xname);
   3041 		return;
   3042 	}
   3043 	printf("%s: primary channel %s to ",
   3044 	    sc->sc_wdcdev.sc_dev.dv_xname,
   3045 	    (interface & PCIIDE_INTERFACE_SETTABLE(0)) ?
   3046 	    "configured" : "wired");
   3047 	if (interface & PCIIDE_INTERFACE_PCI(0)) {
   3048 		printf("native-PCI");
   3049 		cp->hw_ok = pciide_mapregs_native(pa, cp, &cmdsize, &ctlsize,
   3050 		    pciide_pci_intr);
   3051 	} else {
   3052 		printf("compatibility");
   3053 		cp->hw_ok = pciide_mapregs_compat(pa, cp, sc->sc_cy_compatchan,
   3054 		    &cmdsize, &ctlsize);
   3055 	}
   3056 	printf(" mode\n");
   3057 	cp->wdc_channel.data32iot = cp->wdc_channel.cmd_iot;
   3058 	cp->wdc_channel.data32ioh = cp->wdc_channel.cmd_ioh;
   3059 	wdcattach(&cp->wdc_channel);
   3060 	if (pciide_chan_candisable(cp)) {
   3061 		pci_conf_write(sc->sc_pc, sc->sc_tag,
   3062 		    PCI_COMMAND_STATUS_REG, 0);
   3063 	}
   3064 	pciide_map_compat_intr(pa, cp, sc->sc_cy_compatchan, interface);
   3065 	if (cp->hw_ok == 0)
   3066 		return;
   3067 	WDCDEBUG_PRINT(("cy693_chip_map: old timings reg 0x%x\n",
   3068 	    pci_conf_read(sc->sc_pc, sc->sc_tag, CY_CMD_CTRL)),DEBUG_PROBE);
   3069 	cy693_setup_channel(&cp->wdc_channel);
   3070 	WDCDEBUG_PRINT(("cy693_chip_map: new timings reg 0x%x\n",
   3071 	    pci_conf_read(sc->sc_pc, sc->sc_tag, CY_CMD_CTRL)), DEBUG_PROBE);
   3072 }
   3073 
   3074 void
   3075 cy693_setup_channel(chp)
   3076 	struct channel_softc *chp;
   3077 {
   3078 	struct ata_drive_datas *drvp;
   3079 	int drive;
   3080 	u_int32_t cy_cmd_ctrl;
   3081 	u_int32_t idedma_ctl;
   3082 	struct pciide_channel *cp = (struct pciide_channel*)chp;
   3083 	struct pciide_softc *sc = (struct pciide_softc *)cp->wdc_channel.wdc;
   3084 	int dma_mode = -1;
   3085 
   3086 	cy_cmd_ctrl = idedma_ctl = 0;
   3087 
   3088 	/* setup DMA if needed */
   3089 	pciide_channel_dma_setup(cp);
   3090 
   3091 	for (drive = 0; drive < 2; drive++) {
   3092 		drvp = &chp->ch_drive[drive];
   3093 		/* If no drive, skip */
   3094 		if ((drvp->drive_flags & DRIVE) == 0)
   3095 			continue;
   3096 		/* add timing values, setup DMA if needed */
   3097 		if (drvp->drive_flags & DRIVE_DMA) {
   3098 			idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
   3099 			/* use Multiword DMA */
   3100 			if (dma_mode == -1 || dma_mode > drvp->DMA_mode)
   3101 				dma_mode = drvp->DMA_mode;
   3102 		}
   3103 		cy_cmd_ctrl |= (cy_pio_pulse[drvp->PIO_mode] <<
   3104 		    CY_CMD_CTRL_IOW_PULSE_OFF(drive));
   3105 		cy_cmd_ctrl |= (cy_pio_rec[drvp->PIO_mode] <<
   3106 		    CY_CMD_CTRL_IOW_REC_OFF(drive));
   3107 		cy_cmd_ctrl |= (cy_pio_pulse[drvp->PIO_mode] <<
   3108 		    CY_CMD_CTRL_IOR_PULSE_OFF(drive));
   3109 		cy_cmd_ctrl |= (cy_pio_rec[drvp->PIO_mode] <<
   3110 		    CY_CMD_CTRL_IOR_REC_OFF(drive));
   3111 	}
   3112 	pci_conf_write(sc->sc_pc, sc->sc_tag, CY_CMD_CTRL, cy_cmd_ctrl);
   3113 	chp->ch_drive[0].DMA_mode = dma_mode;
   3114 	chp->ch_drive[1].DMA_mode = dma_mode;
   3115 
   3116 	if (dma_mode == -1)
   3117 		dma_mode = 0;
   3118 
   3119 	if (sc->sc_cy_handle != NULL) {
   3120 		/* Note: `multiple' is implied. */
   3121 		cy82c693_write(sc->sc_cy_handle,
   3122 		    (sc->sc_cy_compatchan == 0) ?
   3123 		    CY_DMA_IDX_PRIMARY : CY_DMA_IDX_SECONDARY, dma_mode);
   3124 	}
   3125 
   3126 	pciide_print_modes(cp);
   3127 
   3128 	if (idedma_ctl != 0) {
   3129 		/* Add software bits in status register */
   3130 		bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   3131 		    IDEDMA_CTL, idedma_ctl);
   3132 	}
   3133 }
   3134 
   3135 static struct sis_hostbr_type {
   3136 	u_int16_t id;
   3137 	u_int8_t rev;
   3138 	u_int8_t udma_mode;
   3139 	char *name;
   3140 	u_int8_t type;
   3141 #define SIS_TYPE_NOUDMA	0
   3142 #define SIS_TYPE_66	1
   3143 #define SIS_TYPE_100OLD	2
   3144 #define SIS_TYPE_100NEW 3
   3145 #define SIS_TYPE_133OLD 4
   3146 #define SIS_TYPE_133NEW 5
   3147 #define SIS_TYPE_SOUTH	6
   3148 } sis_hostbr_type[] = {
   3149 	/* Most infos here are from sos (at) freebsd.org */
   3150 	{PCI_PRODUCT_SIS_530HB, 0x00, 4, "530", SIS_TYPE_66},
   3151 #if 0
   3152 	/*
   3153 	 * controllers associated to a rev 0x2 530 Host to PCI Bridge
   3154 	 * have problems with UDMA (info provided by Christos)
   3155 	 */
   3156 	{PCI_PRODUCT_SIS_530HB, 0x02, 0, "530 (buggy)", SIS_TYPE_NOUDMA},
   3157 #endif
   3158 	{PCI_PRODUCT_SIS_540HB, 0x00, 4, "540", SIS_TYPE_66},
   3159 	{PCI_PRODUCT_SIS_550HB, 0x00, 4, "550", SIS_TYPE_66},
   3160 	{PCI_PRODUCT_SIS_620,   0x00, 4, "620", SIS_TYPE_66},
   3161 	{PCI_PRODUCT_SIS_630,   0x00, 4, "630", SIS_TYPE_66},
   3162 	{PCI_PRODUCT_SIS_630,   0x30, 5, "630S", SIS_TYPE_100NEW},
   3163 	{PCI_PRODUCT_SIS_633,   0x00, 5, "633", SIS_TYPE_100NEW},
   3164 	{PCI_PRODUCT_SIS_635,   0x00, 5, "635", SIS_TYPE_100NEW},
   3165 	{PCI_PRODUCT_SIS_640,   0x00, 4, "640", SIS_TYPE_SOUTH},
   3166 	{PCI_PRODUCT_SIS_645,   0x00, 6, "645", SIS_TYPE_SOUTH},
   3167 	{PCI_PRODUCT_SIS_646,   0x00, 6, "645DX", SIS_TYPE_SOUTH},
   3168 	{PCI_PRODUCT_SIS_648,   0x00, 6, "648", SIS_TYPE_SOUTH},
   3169 	{PCI_PRODUCT_SIS_650,   0x00, 6, "650", SIS_TYPE_SOUTH},
   3170 	{PCI_PRODUCT_SIS_651,   0x00, 6, "651", SIS_TYPE_SOUTH},
   3171 	{PCI_PRODUCT_SIS_652,   0x00, 6, "652", SIS_TYPE_SOUTH},
   3172 	{PCI_PRODUCT_SIS_655,   0x00, 6, "655", SIS_TYPE_SOUTH},
   3173 	{PCI_PRODUCT_SIS_658,   0x00, 6, "658", SIS_TYPE_SOUTH},
   3174 	{PCI_PRODUCT_SIS_730,   0x00, 5, "730", SIS_TYPE_100OLD},
   3175 	{PCI_PRODUCT_SIS_733,   0x00, 5, "733", SIS_TYPE_100NEW},
   3176 	{PCI_PRODUCT_SIS_735,   0x00, 5, "735", SIS_TYPE_100NEW},
   3177 	{PCI_PRODUCT_SIS_740,   0x00, 5, "740", SIS_TYPE_SOUTH},
   3178 	{PCI_PRODUCT_SIS_745,   0x00, 5, "745", SIS_TYPE_100NEW},
   3179 	{PCI_PRODUCT_SIS_746,   0x00, 6, "746", SIS_TYPE_SOUTH},
   3180 	{PCI_PRODUCT_SIS_748,   0x00, 6, "748", SIS_TYPE_SOUTH},
   3181 	{PCI_PRODUCT_SIS_750,   0x00, 6, "750", SIS_TYPE_SOUTH},
   3182 	{PCI_PRODUCT_SIS_751,   0x00, 6, "751", SIS_TYPE_SOUTH},
   3183 	{PCI_PRODUCT_SIS_752,   0x00, 6, "752", SIS_TYPE_SOUTH},
   3184 	{PCI_PRODUCT_SIS_755,   0x00, 6, "755", SIS_TYPE_SOUTH},
   3185 	/*
   3186 	 * From sos (at) freebsd.org: the 0x961 ID will never be found in real world
   3187 	 * {PCI_PRODUCT_SIS_961,   0x00, 6, "961", SIS_TYPE_133NEW},
   3188 	 */
   3189 	{PCI_PRODUCT_SIS_962,   0x00, 6, "962", SIS_TYPE_133NEW},
   3190 	{PCI_PRODUCT_SIS_963,   0x00, 6, "963", SIS_TYPE_133NEW},
   3191 };
   3192 
   3193 static struct sis_hostbr_type *sis_hostbr_type_match;
   3194 
   3195 static int
   3196 sis_hostbr_match(pa)
   3197 	struct pci_attach_args *pa;
   3198 {
   3199 	int i;
   3200 	if (PCI_VENDOR(pa->pa_id) != PCI_VENDOR_SIS)
   3201 		return 0;
   3202 	sis_hostbr_type_match = NULL;
   3203 	for (i = 0;
   3204 	    i < sizeof(sis_hostbr_type) / sizeof(sis_hostbr_type[0]);
   3205 	    i++) {
   3206 		if (PCI_PRODUCT(pa->pa_id) == sis_hostbr_type[i].id &&
   3207 		    PCI_REVISION(pa->pa_class) >= sis_hostbr_type[i].rev)
   3208 			sis_hostbr_type_match = &sis_hostbr_type[i];
   3209 	}
   3210 	return (sis_hostbr_type_match != NULL);
   3211 }
   3212 
   3213 static int sis_south_match(pa)
   3214 	struct pci_attach_args *pa;
   3215 {
   3216 	return(PCI_VENDOR(pa->pa_id) == PCI_VENDOR_SIS &&
   3217 		PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_SIS_85C503 &&
   3218 		PCI_REVISION(pa->pa_class) >= 0x10);
   3219 }
   3220 
   3221 void
   3222 sis_chip_map(sc, pa)
   3223 	struct pciide_softc *sc;
   3224 	struct pci_attach_args *pa;
   3225 {
   3226 	struct pciide_channel *cp;
   3227 	int channel;
   3228 	u_int8_t sis_ctr0 = pciide_pci_read(sc->sc_pc, sc->sc_tag, SIS_CTRL0);
   3229 	pcireg_t interface = PCI_INTERFACE(pa->pa_class);
   3230 	pcireg_t rev = PCI_REVISION(pa->pa_class);
   3231 	bus_size_t cmdsize, ctlsize;
   3232 
   3233 	if (pciide_chipen(sc, pa) == 0)
   3234 		return;
   3235 	printf("Silicon Integrated System ");
   3236 	pci_find_device(pa, sis_hostbr_match);
   3237 	if (sis_hostbr_type_match) {
   3238 		if (sis_hostbr_type_match->type == SIS_TYPE_SOUTH) {
   3239 			pciide_pci_write(sc->sc_pc, sc->sc_tag, SIS_REG_57,
   3240 			    pciide_pci_read(sc->sc_pc, sc->sc_tag,
   3241 			    SIS_REG_57) & 0x7f);
   3242 			if (PCI_PRODUCT(pci_conf_read(sc->sc_pc, sc->sc_tag,
   3243 			    PCI_ID_REG)) == SIS_PRODUCT_5518) {
   3244 				printf("96X UDMA%d",
   3245 				    sis_hostbr_type_match->udma_mode);
   3246 				sc->sis_type = SIS_TYPE_133NEW;
   3247 				sc->sc_wdcdev.UDMA_cap =
   3248 			    	    sis_hostbr_type_match->udma_mode;
   3249 			} else {
   3250 				if (pci_find_device(pa, sis_south_match)) {
   3251 					sc->sis_type = SIS_TYPE_133OLD;
   3252 					sc->sc_wdcdev.UDMA_cap =
   3253 				    	    sis_hostbr_type_match->udma_mode;
   3254 				} else {
   3255 					sc->sis_type = SIS_TYPE_100NEW;
   3256 					sc->sc_wdcdev.UDMA_cap =
   3257 					    sis_hostbr_type_match->udma_mode;
   3258 				}
   3259 			}
   3260 		} else {
   3261 			printf(sis_hostbr_type_match->name);
   3262 			sc->sis_type = sis_hostbr_type_match->type;
   3263 			sc->sc_wdcdev.UDMA_cap =
   3264 		    	    sis_hostbr_type_match->udma_mode;
   3265 		}
   3266 	} else {
   3267 		printf("5597/5598");
   3268 		sc->sis_type = 0;
   3269 		if (rev >= 0xd0) {
   3270 			sc->sc_wdcdev.cap |= WDC_CAPABILITY_UDMA;
   3271 			sc->sc_wdcdev.UDMA_cap = 2;
   3272 		} else {
   3273 			sc->sc_wdcdev.UDMA_cap = 0;
   3274 		}
   3275 	}
   3276 	printf(" IDE controller (rev. 0x%02x)\n", PCI_REVISION(pa->pa_class));
   3277 	printf("%s: bus-master DMA support present",
   3278 	    sc->sc_wdcdev.sc_dev.dv_xname);
   3279 	pciide_mapreg_dma(sc, pa);
   3280 	printf("\n");
   3281 
   3282 	sc->sc_wdcdev.cap = WDC_CAPABILITY_DATA16 | WDC_CAPABILITY_DATA32 |
   3283 	    WDC_CAPABILITY_MODE;
   3284 	if (sc->sc_dma_ok) {
   3285 		sc->sc_wdcdev.cap |= WDC_CAPABILITY_DMA | WDC_CAPABILITY_IRQACK;
   3286 		sc->sc_wdcdev.irqack = pciide_irqack;
   3287 		if (sc->sis_type >= SIS_TYPE_66)
   3288 			sc->sc_wdcdev.cap |= WDC_CAPABILITY_UDMA;
   3289 	}
   3290 
   3291 	sc->sc_wdcdev.PIO_cap = 4;
   3292 	sc->sc_wdcdev.DMA_cap = 2;
   3293 
   3294 	sc->sc_wdcdev.channels = sc->wdc_chanarray;
   3295 	sc->sc_wdcdev.nchannels = PCIIDE_NUM_CHANNELS;
   3296 	switch(sc->sis_type) {
   3297 	case SIS_TYPE_NOUDMA:
   3298 	case SIS_TYPE_66:
   3299 	case SIS_TYPE_100OLD:
   3300 		sc->sc_wdcdev.set_modes = sis_setup_channel;
   3301 		pciide_pci_write(sc->sc_pc, sc->sc_tag, SIS_MISC,
   3302 		    pciide_pci_read(sc->sc_pc, sc->sc_tag, SIS_MISC) |
   3303 		    SIS_MISC_TIM_SEL | SIS_MISC_FIFO_SIZE | SIS_MISC_GTC);
   3304 		break;
   3305 	case SIS_TYPE_100NEW:
   3306 	case SIS_TYPE_133OLD:
   3307 		sc->sc_wdcdev.set_modes = sis_setup_channel;
   3308 		pciide_pci_write(sc->sc_pc, sc->sc_tag, SIS_REG_49,
   3309 		    pciide_pci_read(sc->sc_pc, sc->sc_tag, SIS_REG_49) | 0x01);
   3310 		break;
   3311 	case SIS_TYPE_133NEW:
   3312 		sc->sc_wdcdev.set_modes = sis96x_setup_channel;
   3313 		pciide_pci_write(sc->sc_pc, sc->sc_tag, SIS_REG_50,
   3314 		    pciide_pci_read(sc->sc_pc, sc->sc_tag, SIS_REG_50) & 0xf7);
   3315 		pciide_pci_write(sc->sc_pc, sc->sc_tag, SIS_REG_52,
   3316 		    pciide_pci_read(sc->sc_pc, sc->sc_tag, SIS_REG_52) & 0xf7);
   3317 		break;
   3318 	}
   3319 
   3320 
   3321 	for (channel = 0; channel < sc->sc_wdcdev.nchannels; channel++) {
   3322 		cp = &sc->pciide_channels[channel];
   3323 		if (pciide_chansetup(sc, channel, interface) == 0)
   3324 			continue;
   3325 		if ((channel == 0 && (sis_ctr0 & SIS_CTRL0_CHAN0_EN) == 0) ||
   3326 		    (channel == 1 && (sis_ctr0 & SIS_CTRL0_CHAN1_EN) == 0)) {
   3327 			printf("%s: %s channel ignored (disabled)\n",
   3328 			    sc->sc_wdcdev.sc_dev.dv_xname, cp->name);
   3329 			continue;
   3330 		}
   3331 		pciide_mapchan(pa, cp, interface, &cmdsize, &ctlsize,
   3332 		    pciide_pci_intr);
   3333 		if (cp->hw_ok == 0)
   3334 			continue;
   3335 		if (pciide_chan_candisable(cp)) {
   3336 			if (channel == 0)
   3337 				sis_ctr0 &= ~SIS_CTRL0_CHAN0_EN;
   3338 			else
   3339 				sis_ctr0 &= ~SIS_CTRL0_CHAN1_EN;
   3340 			pciide_pci_write(sc->sc_pc, sc->sc_tag, SIS_CTRL0,
   3341 			    sis_ctr0);
   3342 		}
   3343 		pciide_map_compat_intr(pa, cp, channel, interface);
   3344 		if (cp->hw_ok == 0)
   3345 			continue;
   3346 		sc->sc_wdcdev.set_modes(&cp->wdc_channel);
   3347 	}
   3348 }
   3349 
   3350 void
   3351 sis96x_setup_channel(chp)
   3352 	struct channel_softc *chp;
   3353 {
   3354 	struct ata_drive_datas *drvp;
   3355 	int drive;
   3356 	u_int32_t sis_tim;
   3357 	u_int32_t idedma_ctl;
   3358 	int regtim;
   3359 	struct pciide_channel *cp = (struct pciide_channel*)chp;
   3360 	struct pciide_softc *sc = (struct pciide_softc *)cp->wdc_channel.wdc;
   3361 
   3362 	sis_tim = 0;
   3363 	idedma_ctl = 0;
   3364 	/* setup DMA if needed */
   3365 	pciide_channel_dma_setup(cp);
   3366 
   3367 	for (drive = 0; drive < 2; drive++) {
   3368 		regtim = SIS_TIM133(
   3369 		    pciide_pci_read(sc->sc_pc, sc->sc_tag, SIS_REG_57),
   3370 		    chp->channel, drive);
   3371 		drvp = &chp->ch_drive[drive];
   3372 		/* If no drive, skip */
   3373 		if ((drvp->drive_flags & DRIVE) == 0)
   3374 			continue;
   3375 		/* add timing values, setup DMA if needed */
   3376 		if (drvp->drive_flags & DRIVE_UDMA) {
   3377 			/* use Ultra/DMA */
   3378 			drvp->drive_flags &= ~DRIVE_DMA;
   3379 			if (pciide_pci_read(sc->sc_pc, sc->sc_tag,
   3380 			    SIS96x_REG_CBL(chp->channel)) & SIS96x_REG_CBL_33) {
   3381 				if (drvp->UDMA_mode > 2)
   3382 					drvp->UDMA_mode = 2;
   3383 			}
   3384 			sis_tim |= sis_udma133new_tim[drvp->UDMA_mode];
   3385 			sis_tim |= sis_pio133new_tim[drvp->PIO_mode];
   3386 			idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
   3387 		} else if (drvp->drive_flags & DRIVE_DMA) {
   3388 			/*
   3389 			 * use Multiword DMA
   3390 			 * Timings will be used for both PIO and DMA,
   3391 			 * so adjust DMA mode if needed
   3392 			 */
   3393 			if (drvp->PIO_mode > (drvp->DMA_mode + 2))
   3394 				drvp->PIO_mode = drvp->DMA_mode + 2;
   3395 			if (drvp->DMA_mode + 2 > (drvp->PIO_mode))
   3396 				drvp->DMA_mode = (drvp->PIO_mode > 2) ?
   3397 				    drvp->PIO_mode - 2 : 0;
   3398 			sis_tim |= sis_dma133new_tim[drvp->DMA_mode];
   3399 			idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
   3400 		} else {
   3401 			sis_tim |= sis_pio133new_tim[drvp->PIO_mode];
   3402 		}
   3403 		WDCDEBUG_PRINT(("sis96x_setup_channel: new timings reg for "
   3404 		    "channel %d drive %d: 0x%x (reg 0x%x)\n",
   3405 		    chp->channel, drive, sis_tim, regtim), DEBUG_PROBE);
   3406 		pci_conf_write(sc->sc_pc, sc->sc_tag, regtim, sis_tim);
   3407 	}
   3408 	if (idedma_ctl != 0) {
   3409 		/* Add software bits in status register */
   3410 		bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   3411 		    IDEDMA_CTL+ (IDEDMA_SCH_OFFSET * chp->channel),
   3412 		    idedma_ctl);
   3413 	}
   3414 	pciide_print_modes(cp);
   3415 }
   3416 
   3417 void
   3418 sis_setup_channel(chp)
   3419 	struct channel_softc *chp;
   3420 {
   3421 	struct ata_drive_datas *drvp;
   3422 	int drive;
   3423 	u_int32_t sis_tim;
   3424 	u_int32_t idedma_ctl;
   3425 	struct pciide_channel *cp = (struct pciide_channel*)chp;
   3426 	struct pciide_softc *sc = (struct pciide_softc *)cp->wdc_channel.wdc;
   3427 
   3428 	WDCDEBUG_PRINT(("sis_setup_channel: old timings reg for "
   3429 	    "channel %d 0x%x\n", chp->channel,
   3430 	    pci_conf_read(sc->sc_pc, sc->sc_tag, SIS_TIM(chp->channel))),
   3431 	    DEBUG_PROBE);
   3432 	sis_tim = 0;
   3433 	idedma_ctl = 0;
   3434 	/* setup DMA if needed */
   3435 	pciide_channel_dma_setup(cp);
   3436 
   3437 	for (drive = 0; drive < 2; drive++) {
   3438 		drvp = &chp->ch_drive[drive];
   3439 		/* If no drive, skip */
   3440 		if ((drvp->drive_flags & DRIVE) == 0)
   3441 			continue;
   3442 		/* add timing values, setup DMA if needed */
   3443 		if ((drvp->drive_flags & DRIVE_DMA) == 0 &&
   3444 		    (drvp->drive_flags & DRIVE_UDMA) == 0)
   3445 			goto pio;
   3446 
   3447 		if (drvp->drive_flags & DRIVE_UDMA) {
   3448 			/* use Ultra/DMA */
   3449 			drvp->drive_flags &= ~DRIVE_DMA;
   3450 			if (pciide_pci_read(sc->sc_pc, sc->sc_tag,
   3451 			    SIS_REG_CBL) & SIS_REG_CBL_33(chp->channel)) {
   3452 				if (drvp->UDMA_mode > 2)
   3453 					drvp->UDMA_mode = 2;
   3454 			}
   3455 			switch (sc->sis_type) {
   3456 			case SIS_TYPE_66:
   3457 			case SIS_TYPE_100OLD:
   3458 				sis_tim |= sis_udma66_tim[drvp->UDMA_mode] <<
   3459 				    SIS_TIM66_UDMA_TIME_OFF(drive);
   3460 				break;
   3461 			case SIS_TYPE_100NEW:
   3462 				sis_tim |=
   3463 				    sis_udma100new_tim[drvp->UDMA_mode] <<
   3464 				    SIS_TIM100_UDMA_TIME_OFF(drive);
   3465 			case SIS_TYPE_133OLD:
   3466 				sis_tim |=
   3467 				    sis_udma133old_tim[drvp->UDMA_mode] <<
   3468 				    SIS_TIM100_UDMA_TIME_OFF(drive);
   3469 				break;
   3470 			default:
   3471 				printf("unknown SiS IDE type %d\n",
   3472 				    sc->sis_type);
   3473 			}
   3474 		} else {
   3475 			/*
   3476 			 * use Multiword DMA
   3477 			 * Timings will be used for both PIO and DMA,
   3478 			 * so adjust DMA mode if needed
   3479 			 */
   3480 			if (drvp->PIO_mode > (drvp->DMA_mode + 2))
   3481 				drvp->PIO_mode = drvp->DMA_mode + 2;
   3482 			if (drvp->DMA_mode + 2 > (drvp->PIO_mode))
   3483 				drvp->DMA_mode = (drvp->PIO_mode > 2) ?
   3484 				    drvp->PIO_mode - 2 : 0;
   3485 			if (drvp->DMA_mode == 0)
   3486 				drvp->PIO_mode = 0;
   3487 		}
   3488 		idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
   3489 pio:		switch (sc->sis_type) {
   3490 		case SIS_TYPE_66:
   3491 		case SIS_TYPE_100OLD:
   3492 			sis_tim |= sis_pio_act[drvp->PIO_mode] <<
   3493 			    SIS_TIM66_ACT_OFF(drive);
   3494 			sis_tim |= sis_pio_rec[drvp->PIO_mode] <<
   3495 			    SIS_TIM66_REC_OFF(drive);
   3496 			break;
   3497 		case SIS_TYPE_100NEW:
   3498 		case SIS_TYPE_133OLD:
   3499 			sis_tim |= sis_pio_act[drvp->PIO_mode] <<
   3500 			    SIS_TIM100_ACT_OFF(drive);
   3501 			sis_tim |= sis_pio_rec[drvp->PIO_mode] <<
   3502 			    SIS_TIM100_REC_OFF(drive);
   3503 			break;
   3504 		default:
   3505 			printf("unknown SiS IDE type %d\n",
   3506 			    sc->sis_type);
   3507 		}
   3508 	}
   3509 	WDCDEBUG_PRINT(("sis_setup_channel: new timings reg for "
   3510 	    "channel %d 0x%x\n", chp->channel, sis_tim), DEBUG_PROBE);
   3511 	pci_conf_write(sc->sc_pc, sc->sc_tag, SIS_TIM(chp->channel), sis_tim);
   3512 	if (idedma_ctl != 0) {
   3513 		/* Add software bits in status register */
   3514 		bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   3515 		    IDEDMA_CTL+ (IDEDMA_SCH_OFFSET * chp->channel),
   3516 		    idedma_ctl);
   3517 	}
   3518 	pciide_print_modes(cp);
   3519 }
   3520 
   3521 void
   3522 acer_chip_map(sc, pa)
   3523 	struct pciide_softc *sc;
   3524 	struct pci_attach_args *pa;
   3525 {
   3526 	struct pciide_channel *cp;
   3527 	int channel;
   3528 	pcireg_t cr, interface;
   3529 	bus_size_t cmdsize, ctlsize;
   3530 	pcireg_t rev = PCI_REVISION(pa->pa_class);
   3531 
   3532 	if (pciide_chipen(sc, pa) == 0)
   3533 		return;
   3534 	printf("%s: bus-master DMA support present",
   3535 	    sc->sc_wdcdev.sc_dev.dv_xname);
   3536 	pciide_mapreg_dma(sc, pa);
   3537 	printf("\n");
   3538 	sc->sc_wdcdev.cap = WDC_CAPABILITY_DATA16 | WDC_CAPABILITY_DATA32 |
   3539 	    WDC_CAPABILITY_MODE;
   3540 	if (sc->sc_dma_ok) {
   3541 		sc->sc_wdcdev.cap |= WDC_CAPABILITY_DMA;
   3542 		if (rev >= 0x20) {
   3543 			sc->sc_wdcdev.cap |= WDC_CAPABILITY_UDMA;
   3544 			if (rev >= 0xC4)
   3545 				sc->sc_wdcdev.UDMA_cap = 5;
   3546 			else if (rev >= 0xC2)
   3547 				sc->sc_wdcdev.UDMA_cap = 4;
   3548 			else
   3549 				sc->sc_wdcdev.UDMA_cap = 2;
   3550 		}
   3551 		sc->sc_wdcdev.cap |= WDC_CAPABILITY_IRQACK;
   3552 		sc->sc_wdcdev.irqack = pciide_irqack;
   3553 	}
   3554 
   3555 	sc->sc_wdcdev.PIO_cap = 4;
   3556 	sc->sc_wdcdev.DMA_cap = 2;
   3557 	sc->sc_wdcdev.set_modes = acer_setup_channel;
   3558 	sc->sc_wdcdev.channels = sc->wdc_chanarray;
   3559 	sc->sc_wdcdev.nchannels = PCIIDE_NUM_CHANNELS;
   3560 
   3561 	pciide_pci_write(sc->sc_pc, sc->sc_tag, ACER_CDRC,
   3562 	    (pciide_pci_read(sc->sc_pc, sc->sc_tag, ACER_CDRC) |
   3563 		ACER_CDRC_DMA_EN) & ~ACER_CDRC_FIFO_DISABLE);
   3564 
   3565 	/* Enable "microsoft register bits" R/W. */
   3566 	pciide_pci_write(sc->sc_pc, sc->sc_tag, ACER_CCAR3,
   3567 	    pciide_pci_read(sc->sc_pc, sc->sc_tag, ACER_CCAR3) | ACER_CCAR3_PI);
   3568 	pciide_pci_write(sc->sc_pc, sc->sc_tag, ACER_CCAR1,
   3569 	    pciide_pci_read(sc->sc_pc, sc->sc_tag, ACER_CCAR1) &
   3570 	    ~(ACER_CHANSTATUS_RO|PCIIDE_CHAN_RO(0)|PCIIDE_CHAN_RO(1)));
   3571 	pciide_pci_write(sc->sc_pc, sc->sc_tag, ACER_CCAR2,
   3572 	    pciide_pci_read(sc->sc_pc, sc->sc_tag, ACER_CCAR2) &
   3573 	    ~ACER_CHANSTATUSREGS_RO);
   3574 	cr = pci_conf_read(sc->sc_pc, sc->sc_tag, PCI_CLASS_REG);
   3575 	cr |= (PCIIDE_CHANSTATUS_EN << PCI_INTERFACE_SHIFT);
   3576 	pci_conf_write(sc->sc_pc, sc->sc_tag, PCI_CLASS_REG, cr);
   3577 	/* Don't use cr, re-read the real register content instead */
   3578 	interface = PCI_INTERFACE(pci_conf_read(sc->sc_pc, sc->sc_tag,
   3579 	    PCI_CLASS_REG));
   3580 
   3581 	/* From linux: enable "Cable Detection" */
   3582 	if (rev >= 0xC2) {
   3583 		pciide_pci_write(sc->sc_pc, sc->sc_tag, ACER_0x4B,
   3584 		    pciide_pci_read(sc->sc_pc, sc->sc_tag, ACER_0x4B)
   3585 		    | ACER_0x4B_CDETECT);
   3586 	}
   3587 
   3588 	for (channel = 0; channel < sc->sc_wdcdev.nchannels; channel++) {
   3589 		cp = &sc->pciide_channels[channel];
   3590 		if (pciide_chansetup(sc, channel, interface) == 0)
   3591 			continue;
   3592 		if ((interface & PCIIDE_CHAN_EN(channel)) == 0) {
   3593 			printf("%s: %s channel ignored (disabled)\n",
   3594 			    sc->sc_wdcdev.sc_dev.dv_xname, cp->name);
   3595 			continue;
   3596 		}
   3597 		/* newer controllers seems to lack the ACER_CHIDS. Sigh */
   3598 		pciide_mapchan(pa, cp, interface, &cmdsize, &ctlsize,
   3599 		     (rev >= 0xC2) ? pciide_pci_intr : acer_pci_intr);
   3600 		if (cp->hw_ok == 0)
   3601 			continue;
   3602 		if (pciide_chan_candisable(cp)) {
   3603 			cr &= ~(PCIIDE_CHAN_EN(channel) << PCI_INTERFACE_SHIFT);
   3604 			pci_conf_write(sc->sc_pc, sc->sc_tag,
   3605 			    PCI_CLASS_REG, cr);
   3606 		}
   3607 		pciide_map_compat_intr(pa, cp, channel, interface);
   3608 		acer_setup_channel(&cp->wdc_channel);
   3609 	}
   3610 }
   3611 
   3612 void
   3613 acer_setup_channel(chp)
   3614 	struct channel_softc *chp;
   3615 {
   3616 	struct ata_drive_datas *drvp;
   3617 	int drive;
   3618 	u_int32_t acer_fifo_udma;
   3619 	u_int32_t idedma_ctl;
   3620 	struct pciide_channel *cp = (struct pciide_channel*)chp;
   3621 	struct pciide_softc *sc = (struct pciide_softc *)cp->wdc_channel.wdc;
   3622 
   3623 	idedma_ctl = 0;
   3624 	acer_fifo_udma = pci_conf_read(sc->sc_pc, sc->sc_tag, ACER_FTH_UDMA);
   3625 	WDCDEBUG_PRINT(("acer_setup_channel: old fifo/udma reg 0x%x\n",
   3626 	    acer_fifo_udma), DEBUG_PROBE);
   3627 	/* setup DMA if needed */
   3628 	pciide_channel_dma_setup(cp);
   3629 
   3630 	if ((chp->ch_drive[0].drive_flags | chp->ch_drive[1].drive_flags) &
   3631 	    DRIVE_UDMA) { /* check 80 pins cable */
   3632 		if (pciide_pci_read(sc->sc_pc, sc->sc_tag, ACER_0x4A) &
   3633 		    ACER_0x4A_80PIN(chp->channel)) {
   3634 			if (chp->ch_drive[0].UDMA_mode > 2)
   3635 				chp->ch_drive[0].UDMA_mode = 2;
   3636 			if (chp->ch_drive[1].UDMA_mode > 2)
   3637 				chp->ch_drive[1].UDMA_mode = 2;
   3638 		}
   3639 	}
   3640 
   3641 	for (drive = 0; drive < 2; drive++) {
   3642 		drvp = &chp->ch_drive[drive];
   3643 		/* If no drive, skip */
   3644 		if ((drvp->drive_flags & DRIVE) == 0)
   3645 			continue;
   3646 		WDCDEBUG_PRINT(("acer_setup_channel: old timings reg for "
   3647 		    "channel %d drive %d 0x%x\n", chp->channel, drive,
   3648 		    pciide_pci_read(sc->sc_pc, sc->sc_tag,
   3649 		    ACER_IDETIM(chp->channel, drive))), DEBUG_PROBE);
   3650 		/* clear FIFO/DMA mode */
   3651 		acer_fifo_udma &= ~(ACER_FTH_OPL(chp->channel, drive, 0x3) |
   3652 		    ACER_UDMA_EN(chp->channel, drive) |
   3653 		    ACER_UDMA_TIM(chp->channel, drive, 0x7));
   3654 
   3655 		/* add timing values, setup DMA if needed */
   3656 		if ((drvp->drive_flags & DRIVE_DMA) == 0 &&
   3657 		    (drvp->drive_flags & DRIVE_UDMA) == 0) {
   3658 			acer_fifo_udma |=
   3659 			    ACER_FTH_OPL(chp->channel, drive, 0x1);
   3660 			goto pio;
   3661 		}
   3662 
   3663 		acer_fifo_udma |= ACER_FTH_OPL(chp->channel, drive, 0x2);
   3664 		if (drvp->drive_flags & DRIVE_UDMA) {
   3665 			/* use Ultra/DMA */
   3666 			drvp->drive_flags &= ~DRIVE_DMA;
   3667 			acer_fifo_udma |= ACER_UDMA_EN(chp->channel, drive);
   3668 			acer_fifo_udma |=
   3669 			    ACER_UDMA_TIM(chp->channel, drive,
   3670 				acer_udma[drvp->UDMA_mode]);
   3671 			/* XXX disable if one drive < UDMA3 ? */
   3672 			if (drvp->UDMA_mode >= 3) {
   3673 				pciide_pci_write(sc->sc_pc, sc->sc_tag,
   3674 				    ACER_0x4B,
   3675 				    pciide_pci_read(sc->sc_pc, sc->sc_tag,
   3676 					ACER_0x4B) | ACER_0x4B_UDMA66);
   3677 			}
   3678 		} else {
   3679 			/*
   3680 			 * use Multiword DMA
   3681 			 * Timings will be used for both PIO and DMA,
   3682 			 * so adjust DMA mode if needed
   3683 			 */
   3684 			if (drvp->PIO_mode > (drvp->DMA_mode + 2))
   3685 				drvp->PIO_mode = drvp->DMA_mode + 2;
   3686 			if (drvp->DMA_mode + 2 > (drvp->PIO_mode))
   3687 				drvp->DMA_mode = (drvp->PIO_mode > 2) ?
   3688 				    drvp->PIO_mode - 2 : 0;
   3689 			if (drvp->DMA_mode == 0)
   3690 				drvp->PIO_mode = 0;
   3691 		}
   3692 		idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
   3693 pio:		pciide_pci_write(sc->sc_pc, sc->sc_tag,
   3694 		    ACER_IDETIM(chp->channel, drive),
   3695 		    acer_pio[drvp->PIO_mode]);
   3696 	}
   3697 	WDCDEBUG_PRINT(("acer_setup_channel: new fifo/udma reg 0x%x\n",
   3698 	    acer_fifo_udma), DEBUG_PROBE);
   3699 	pci_conf_write(sc->sc_pc, sc->sc_tag, ACER_FTH_UDMA, acer_fifo_udma);
   3700 	if (idedma_ctl != 0) {
   3701 		/* Add software bits in status register */
   3702 		bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   3703 		    IDEDMA_CTL + (IDEDMA_SCH_OFFSET * chp->channel),
   3704 		    idedma_ctl);
   3705 	}
   3706 	pciide_print_modes(cp);
   3707 }
   3708 
   3709 int
   3710 acer_pci_intr(arg)
   3711 	void *arg;
   3712 {
   3713 	struct pciide_softc *sc = arg;
   3714 	struct pciide_channel *cp;
   3715 	struct channel_softc *wdc_cp;
   3716 	int i, rv, crv;
   3717 	u_int32_t chids;
   3718 
   3719 	rv = 0;
   3720 	chids = pciide_pci_read(sc->sc_pc, sc->sc_tag, ACER_CHIDS);
   3721 	for (i = 0; i < sc->sc_wdcdev.nchannels; i++) {
   3722 		cp = &sc->pciide_channels[i];
   3723 		wdc_cp = &cp->wdc_channel;
   3724 		/* If a compat channel skip. */
   3725 		if (cp->compat)
   3726 			continue;
   3727 		if (chids & ACER_CHIDS_INT(i)) {
   3728 			crv = wdcintr(wdc_cp);
   3729 			if (crv == 0)
   3730 				printf("%s:%d: bogus intr\n",
   3731 				    sc->sc_wdcdev.sc_dev.dv_xname, i);
   3732 			else
   3733 				rv = 1;
   3734 		}
   3735 	}
   3736 	return rv;
   3737 }
   3738 
   3739 void
   3740 hpt_chip_map(sc, pa)
   3741 	struct pciide_softc *sc;
   3742 	struct pci_attach_args *pa;
   3743 {
   3744 	struct pciide_channel *cp;
   3745 	int i, compatchan, revision;
   3746 	pcireg_t interface;
   3747 	bus_size_t cmdsize, ctlsize;
   3748 
   3749 	if (pciide_chipen(sc, pa) == 0)
   3750 		return;
   3751 	revision = PCI_REVISION(pa->pa_class);
   3752 	printf(": Triones/Highpoint ");
   3753 	if (sc->sc_pp->ide_product == PCI_PRODUCT_TRIONES_HPT374)
   3754 		printf("HPT374 IDE Controller\n");
   3755 	else if (sc->sc_pp->ide_product == PCI_PRODUCT_TRIONES_HPT372)
   3756 		printf("HPT372 IDE Controller\n");
   3757 	else if (sc->sc_pp->ide_product == PCI_PRODUCT_TRIONES_HPT366) {
   3758 		if (revision == HPT372_REV)
   3759 			printf("HPT372 IDE Controller\n");
   3760 		else if (revision == HPT370_REV)
   3761 			printf("HPT370 IDE Controller\n");
   3762 		else if (revision == HPT370A_REV)
   3763 			printf("HPT370A IDE Controller\n");
   3764 		else if (revision == HPT366_REV)
   3765 			printf("HPT366 IDE Controller\n");
   3766 		else
   3767 			printf("unknown HPT IDE controller rev %d\n", revision);
   3768 	} else
   3769 		printf("unknown HPT IDE controller 0x%x\n",
   3770 		    sc->sc_pp->ide_product);
   3771 
   3772 	/*
   3773 	 * when the chip is in native mode it identifies itself as a
   3774 	 * 'misc mass storage'. Fake interface in this case.
   3775 	 */
   3776 	if (PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_MASS_STORAGE_IDE) {
   3777 		interface = PCI_INTERFACE(pa->pa_class);
   3778 	} else {
   3779 		interface = PCIIDE_INTERFACE_BUS_MASTER_DMA |
   3780 		    PCIIDE_INTERFACE_PCI(0);
   3781 		if ((sc->sc_pp->ide_product == PCI_PRODUCT_TRIONES_HPT366 &&
   3782 		    (revision == HPT370_REV || revision == HPT370A_REV ||
   3783 		     revision == HPT372_REV)) ||
   3784 		    sc->sc_pp->ide_product == PCI_PRODUCT_TRIONES_HPT372 ||
   3785 		    sc->sc_pp->ide_product == PCI_PRODUCT_TRIONES_HPT374)
   3786 			interface |= PCIIDE_INTERFACE_PCI(1);
   3787 	}
   3788 
   3789 	printf("%s: bus-master DMA support present",
   3790 		sc->sc_wdcdev.sc_dev.dv_xname);
   3791 	pciide_mapreg_dma(sc, pa);
   3792 	printf("\n");
   3793 	sc->sc_wdcdev.cap = WDC_CAPABILITY_DATA16 | WDC_CAPABILITY_DATA32 |
   3794 	    WDC_CAPABILITY_MODE;
   3795 	if (sc->sc_dma_ok) {
   3796 		sc->sc_wdcdev.cap |= WDC_CAPABILITY_DMA | WDC_CAPABILITY_UDMA;
   3797 		sc->sc_wdcdev.cap |= WDC_CAPABILITY_IRQACK;
   3798 		sc->sc_wdcdev.irqack = pciide_irqack;
   3799 	}
   3800 	sc->sc_wdcdev.PIO_cap = 4;
   3801 	sc->sc_wdcdev.DMA_cap = 2;
   3802 
   3803 	sc->sc_wdcdev.set_modes = hpt_setup_channel;
   3804 	sc->sc_wdcdev.channels = sc->wdc_chanarray;
   3805 	if (sc->sc_pp->ide_product == PCI_PRODUCT_TRIONES_HPT366 &&
   3806 	    revision == HPT366_REV) {
   3807 		sc->sc_wdcdev.UDMA_cap = 4;
   3808 		/*
   3809 		 * The 366 has 2 PCI IDE functions, one for primary and one
   3810 		 * for secondary. So we need to call pciide_mapregs_compat()
   3811 		 * with the real channel
   3812 		 */
   3813 		if (pa->pa_function == 0) {
   3814 			compatchan = 0;
   3815 		} else if (pa->pa_function == 1) {
   3816 			compatchan = 1;
   3817 		} else {
   3818 			printf("%s: unexpected PCI function %d\n",
   3819 			    sc->sc_wdcdev.sc_dev.dv_xname, pa->pa_function);
   3820 			return;
   3821 		}
   3822 		sc->sc_wdcdev.nchannels = 1;
   3823 	} else {
   3824 		sc->sc_wdcdev.nchannels = 2;
   3825 		if (sc->sc_pp->ide_product == PCI_PRODUCT_TRIONES_HPT374 ||
   3826 		    sc->sc_pp->ide_product == PCI_PRODUCT_TRIONES_HPT372 ||
   3827 		    (sc->sc_pp->ide_product == PCI_PRODUCT_TRIONES_HPT366 &&
   3828 		    revision == HPT372_REV))
   3829 			sc->sc_wdcdev.UDMA_cap = 6;
   3830 		else
   3831 			sc->sc_wdcdev.UDMA_cap = 5;
   3832 	}
   3833 	for (i = 0; i < sc->sc_wdcdev.nchannels; i++) {
   3834 		cp = &sc->pciide_channels[i];
   3835 		if (sc->sc_wdcdev.nchannels > 1) {
   3836 			compatchan = i;
   3837 			if((pciide_pci_read(sc->sc_pc, sc->sc_tag,
   3838 			   HPT370_CTRL1(i)) & HPT370_CTRL1_EN) == 0) {
   3839 				printf("%s: %s channel ignored (disabled)\n",
   3840 				    sc->sc_wdcdev.sc_dev.dv_xname, cp->name);
   3841 				continue;
   3842 			}
   3843 		}
   3844 		if (pciide_chansetup(sc, i, interface) == 0)
   3845 			continue;
   3846 		if (interface & PCIIDE_INTERFACE_PCI(i)) {
   3847 			cp->hw_ok = pciide_mapregs_native(pa, cp, &cmdsize,
   3848 			    &ctlsize, hpt_pci_intr);
   3849 		} else {
   3850 			cp->hw_ok = pciide_mapregs_compat(pa, cp, compatchan,
   3851 			    &cmdsize, &ctlsize);
   3852 		}
   3853 		if (cp->hw_ok == 0)
   3854 			return;
   3855 		cp->wdc_channel.data32iot = cp->wdc_channel.cmd_iot;
   3856 		cp->wdc_channel.data32ioh = cp->wdc_channel.cmd_ioh;
   3857 		wdcattach(&cp->wdc_channel);
   3858 		hpt_setup_channel(&cp->wdc_channel);
   3859 	}
   3860 	if ((sc->sc_pp->ide_product == PCI_PRODUCT_TRIONES_HPT366 &&
   3861 	    (revision == HPT370_REV || revision == HPT370A_REV ||
   3862 	     revision == HPT372_REV)) ||
   3863 	    sc->sc_pp->ide_product == PCI_PRODUCT_TRIONES_HPT372 ||
   3864 	    sc->sc_pp->ide_product == PCI_PRODUCT_TRIONES_HPT374) {
   3865 		/*
   3866 		 * HPT370_REV and highter has a bit to disable interrupts,
   3867 		 * make sure to clear it
   3868 		 */
   3869 		pciide_pci_write(sc->sc_pc, sc->sc_tag, HPT_CSEL,
   3870 		    pciide_pci_read(sc->sc_pc, sc->sc_tag, HPT_CSEL) &
   3871 		    ~HPT_CSEL_IRQDIS);
   3872 	}
   3873 	/* set clocks, etc (mandatory on 372/4, optional otherwise) */
   3874 	if ((sc->sc_pp->ide_product == PCI_PRODUCT_TRIONES_HPT366 &&
   3875 	     revision == HPT372_REV ) ||
   3876 	    sc->sc_pp->ide_product == PCI_PRODUCT_TRIONES_HPT372 ||
   3877 	    sc->sc_pp->ide_product == PCI_PRODUCT_TRIONES_HPT374)
   3878 		pciide_pci_write(sc->sc_pc, sc->sc_tag, HPT_SC2,
   3879 		    (pciide_pci_read(sc->sc_pc, sc->sc_tag, HPT_SC2) &
   3880 		     HPT_SC2_MAEN) | HPT_SC2_OSC_EN);
   3881 	return;
   3882 }
   3883 
   3884 void
   3885 hpt_setup_channel(chp)
   3886 	struct channel_softc *chp;
   3887 {
   3888 	struct ata_drive_datas *drvp;
   3889 	int drive;
   3890 	int cable;
   3891 	u_int32_t before, after;
   3892 	u_int32_t idedma_ctl;
   3893 	struct pciide_channel *cp = (struct pciide_channel*)chp;
   3894 	struct pciide_softc *sc = (struct pciide_softc *)cp->wdc_channel.wdc;
   3895 	int revision =
   3896 	     PCI_REVISION(pci_conf_read(sc->sc_pc, sc->sc_tag, PCI_CLASS_REG));
   3897 
   3898 	cable = pciide_pci_read(sc->sc_pc, sc->sc_tag, HPT_CSEL);
   3899 
   3900 	/* setup DMA if needed */
   3901 	pciide_channel_dma_setup(cp);
   3902 
   3903 	idedma_ctl = 0;
   3904 
   3905 	/* Per drive settings */
   3906 	for (drive = 0; drive < 2; drive++) {
   3907 		drvp = &chp->ch_drive[drive];
   3908 		/* If no drive, skip */
   3909 		if ((drvp->drive_flags & DRIVE) == 0)
   3910 			continue;
   3911 		before = pci_conf_read(sc->sc_pc, sc->sc_tag,
   3912 					HPT_IDETIM(chp->channel, drive));
   3913 
   3914 		/* add timing values, setup DMA if needed */
   3915 		if (drvp->drive_flags & DRIVE_UDMA) {
   3916 			/* use Ultra/DMA */
   3917 			drvp->drive_flags &= ~DRIVE_DMA;
   3918 			if ((cable & HPT_CSEL_CBLID(chp->channel)) != 0 &&
   3919 			    drvp->UDMA_mode > 2)
   3920 				drvp->UDMA_mode = 2;
   3921 			switch (sc->sc_pp->ide_product) {
   3922 			case PCI_PRODUCT_TRIONES_HPT374:
   3923 				after = hpt374_udma[drvp->UDMA_mode];
   3924 				break;
   3925 			case PCI_PRODUCT_TRIONES_HPT372:
   3926 				after = hpt372_udma[drvp->UDMA_mode];
   3927 				break;
   3928 			case PCI_PRODUCT_TRIONES_HPT366:
   3929 			default:
   3930 				switch(revision) {
   3931 				case HPT372_REV:
   3932 					after = hpt372_udma[drvp->UDMA_mode];
   3933 					break;
   3934 				case HPT370_REV:
   3935 				case HPT370A_REV:
   3936 					after = hpt370_udma[drvp->UDMA_mode];
   3937 					break;
   3938 				case HPT366_REV:
   3939 				default:
   3940 					after = hpt366_udma[drvp->UDMA_mode];
   3941 					break;
   3942 				}
   3943 			}
   3944 			idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
   3945 		} else if (drvp->drive_flags & DRIVE_DMA) {
   3946 			/*
   3947 			 * use Multiword DMA.
   3948 			 * Timings will be used for both PIO and DMA, so adjust
   3949 			 * DMA mode if needed
   3950 			 */
   3951 			if (drvp->PIO_mode >= 3 &&
   3952 			    (drvp->DMA_mode + 2) > drvp->PIO_mode) {
   3953 				drvp->DMA_mode = drvp->PIO_mode - 2;
   3954 			}
   3955 			switch (sc->sc_pp->ide_product) {
   3956 			case PCI_PRODUCT_TRIONES_HPT374:
   3957 				after = hpt374_dma[drvp->DMA_mode];
   3958 				break;
   3959 			case PCI_PRODUCT_TRIONES_HPT372:
   3960 				after = hpt372_dma[drvp->DMA_mode];
   3961 				break;
   3962 			case PCI_PRODUCT_TRIONES_HPT366:
   3963 			default:
   3964 				switch(revision) {
   3965 				case HPT372_REV:
   3966 					after = hpt372_dma[drvp->DMA_mode];
   3967 					break;
   3968 				case HPT370_REV:
   3969 				case HPT370A_REV:
   3970 					after = hpt370_dma[drvp->DMA_mode];
   3971 					break;
   3972 				case HPT366_REV:
   3973 				default:
   3974 					after = hpt366_dma[drvp->DMA_mode];
   3975 					break;
   3976 				}
   3977 			}
   3978 			idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
   3979 		} else {
   3980 			/* PIO only */
   3981 			switch (sc->sc_pp->ide_product) {
   3982 			case PCI_PRODUCT_TRIONES_HPT374:
   3983 				after = hpt374_pio[drvp->PIO_mode];
   3984 				break;
   3985 			case PCI_PRODUCT_TRIONES_HPT372:
   3986 				after = hpt372_pio[drvp->PIO_mode];
   3987 				break;
   3988 			case PCI_PRODUCT_TRIONES_HPT366:
   3989 			default:
   3990 				switch(revision) {
   3991 				case HPT372_REV:
   3992 					after = hpt372_pio[drvp->PIO_mode];
   3993 					break;
   3994 				case HPT370_REV:
   3995 				case HPT370A_REV:
   3996 					after = hpt370_pio[drvp->PIO_mode];
   3997 					break;
   3998 				case HPT366_REV:
   3999 				default:
   4000 					after = hpt366_pio[drvp->PIO_mode];
   4001 					break;
   4002 				}
   4003 			}
   4004 		}
   4005 		pci_conf_write(sc->sc_pc, sc->sc_tag,
   4006 		    HPT_IDETIM(chp->channel, drive), after);
   4007 		WDCDEBUG_PRINT(("%s: bus speed register set to 0x%08x "
   4008 		    "(BIOS 0x%08x)\n", drvp->drv_softc->dv_xname,
   4009 		    after, before), DEBUG_PROBE);
   4010 	}
   4011 	if (idedma_ctl != 0) {
   4012 		/* Add software bits in status register */
   4013 		bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   4014 		    IDEDMA_CTL + (IDEDMA_SCH_OFFSET * chp->channel),
   4015 		    idedma_ctl);
   4016 	}
   4017 	pciide_print_modes(cp);
   4018 }
   4019 
   4020 int
   4021 hpt_pci_intr(arg)
   4022 	void *arg;
   4023 {
   4024 	struct pciide_softc *sc = arg;
   4025 	struct pciide_channel *cp;
   4026 	struct channel_softc *wdc_cp;
   4027 	int rv = 0;
   4028 	int dmastat, i, crv;
   4029 
   4030 	for (i = 0; i < sc->sc_wdcdev.nchannels; i++) {
   4031 		dmastat = bus_space_read_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   4032 		    IDEDMA_CTL + IDEDMA_SCH_OFFSET * i);
   4033 		if((dmastat & ( IDEDMA_CTL_ACT | IDEDMA_CTL_INTR)) !=
   4034 		    IDEDMA_CTL_INTR)
   4035 			continue;
   4036 		cp = &sc->pciide_channels[i];
   4037 		wdc_cp = &cp->wdc_channel;
   4038 		crv = wdcintr(wdc_cp);
   4039 		if (crv == 0) {
   4040 			printf("%s:%d: bogus intr\n",
   4041 			    sc->sc_wdcdev.sc_dev.dv_xname, i);
   4042 			bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   4043 			    IDEDMA_CTL + IDEDMA_SCH_OFFSET * i, dmastat);
   4044 		} else
   4045 			rv = 1;
   4046 	}
   4047 	return rv;
   4048 }
   4049 
   4050 
   4051 /* Macros to test product */
   4052 #define PDC_IS_262(sc)							\
   4053 	((sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_ULTRA66 ||	\
   4054 	(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_ULTRA100 ||	\
   4055 	(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_ULTRA100X ||	\
   4056 	(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_ULTRA100TX2 ||	\
   4057 	(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_ULTRA100TX2v2 || \
   4058 	(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_ULTRA133 ||	\
   4059 	(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_ULTRA133TX2 ||	\
   4060 	(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_MBULTRA133 || \
   4061 	(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_ULTRA133TX2v2 || \
   4062 	(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_FASTTRAK133LITE)
   4063 #define PDC_IS_265(sc)							\
   4064 	((sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_ULTRA100 ||	\
   4065 	(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_ULTRA100X ||	\
   4066 	(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_ULTRA100TX2 ||	\
   4067 	(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_ULTRA100TX2v2 || \
   4068 	(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_ULTRA133 ||	\
   4069 	(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_ULTRA133TX2 ||	\
   4070 	(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_MBULTRA133 || \
   4071 	(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_ULTRA133TX2v2 || \
   4072 	(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_FASTTRAK133LITE)
   4073 #define PDC_IS_268(sc)							\
   4074 	((sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_ULTRA100TX2 ||	\
   4075 	(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_ULTRA100TX2v2 || \
   4076 	(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_ULTRA133 ||	\
   4077 	(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_ULTRA133TX2 ||	\
   4078 	(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_MBULTRA133 || \
   4079 	(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_ULTRA133TX2v2 || \
   4080 	(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_FASTTRAK133LITE)
   4081 #define PDC_IS_276(sc)							\
   4082 	((sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_ULTRA133 ||	\
   4083 	(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_ULTRA133TX2 ||	\
   4084 	(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_MBULTRA133 || \
   4085 	(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_ULTRA133TX2v2 || \
   4086 	(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_FASTTRAK133LITE)
   4087 
   4088 void
   4089 pdc202xx_chip_map(sc, pa)
   4090 	struct pciide_softc *sc;
   4091 	struct pci_attach_args *pa;
   4092 {
   4093 	struct pciide_channel *cp;
   4094 	int channel;
   4095 	pcireg_t interface, st, mode;
   4096 	bus_size_t cmdsize, ctlsize;
   4097 
   4098 	if (!PDC_IS_268(sc)) {
   4099 		st = pci_conf_read(sc->sc_pc, sc->sc_tag, PDC2xx_STATE);
   4100 		WDCDEBUG_PRINT(("pdc202xx_setup_chip: controller state 0x%x\n",
   4101 		    st), DEBUG_PROBE);
   4102 	}
   4103 	if (pciide_chipen(sc, pa) == 0)
   4104 		return;
   4105 
   4106 	/* turn off  RAID mode */
   4107 	if (!PDC_IS_268(sc))
   4108 		st &= ~PDC2xx_STATE_IDERAID;
   4109 
   4110 	/*
   4111 	 * can't rely on the PCI_CLASS_REG content if the chip was in raid
   4112 	 * mode. We have to fake interface
   4113 	 */
   4114 	interface = PCIIDE_INTERFACE_SETTABLE(0) | PCIIDE_INTERFACE_SETTABLE(1);
   4115 	if (PDC_IS_268(sc) || (st & PDC2xx_STATE_NATIVE))
   4116 		interface |= PCIIDE_INTERFACE_PCI(0) | PCIIDE_INTERFACE_PCI(1);
   4117 
   4118 	printf("%s: bus-master DMA support present",
   4119 	    sc->sc_wdcdev.sc_dev.dv_xname);
   4120 	pciide_mapreg_dma(sc, pa);
   4121 	printf("\n");
   4122 	sc->sc_wdcdev.cap = WDC_CAPABILITY_DATA16 | WDC_CAPABILITY_DATA32 |
   4123 	    WDC_CAPABILITY_MODE;
   4124 	if (sc->sc_dma_ok) {
   4125 		sc->sc_wdcdev.cap |= WDC_CAPABILITY_DMA | WDC_CAPABILITY_UDMA;
   4126 		sc->sc_wdcdev.cap |= WDC_CAPABILITY_IRQACK;
   4127 		sc->sc_wdcdev.irqack = pciide_irqack;
   4128 	}
   4129 	if (PCI_CLASS(pa->pa_class) == PCI_CLASS_MASS_STORAGE &&
   4130 	    PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_MASS_STORAGE_RAID)
   4131 		sc->sc_wdcdev.cap |= WDC_CAPABILITY_RAID;
   4132 	sc->sc_wdcdev.PIO_cap = 4;
   4133 	sc->sc_wdcdev.DMA_cap = 2;
   4134 	if (PDC_IS_276(sc))
   4135 		sc->sc_wdcdev.UDMA_cap = 6;
   4136 	else if (PDC_IS_265(sc))
   4137 		sc->sc_wdcdev.UDMA_cap = 5;
   4138 	else if (PDC_IS_262(sc))
   4139 		sc->sc_wdcdev.UDMA_cap = 4;
   4140 	else
   4141 		sc->sc_wdcdev.UDMA_cap = 2;
   4142 	sc->sc_wdcdev.set_modes = PDC_IS_268(sc) ?
   4143 			pdc20268_setup_channel : pdc202xx_setup_channel;
   4144 	sc->sc_wdcdev.channels = sc->wdc_chanarray;
   4145 	sc->sc_wdcdev.nchannels = PCIIDE_NUM_CHANNELS;
   4146 
   4147 	if (!PDC_IS_268(sc)) {
   4148 		/* setup failsafe defaults */
   4149 		mode = 0;
   4150 		mode = PDC2xx_TIM_SET_PA(mode, pdc2xx_pa[0]);
   4151 		mode = PDC2xx_TIM_SET_PB(mode, pdc2xx_pb[0]);
   4152 		mode = PDC2xx_TIM_SET_MB(mode, pdc2xx_dma_mb[0]);
   4153 		mode = PDC2xx_TIM_SET_MC(mode, pdc2xx_dma_mc[0]);
   4154 		for (channel = 0;
   4155 		     channel < sc->sc_wdcdev.nchannels;
   4156 		     channel++) {
   4157 			WDCDEBUG_PRINT(("pdc202xx_setup_chip: channel %d "
   4158 			    "drive 0 initial timings  0x%x, now 0x%x\n",
   4159 			    channel, pci_conf_read(sc->sc_pc, sc->sc_tag,
   4160 			    PDC2xx_TIM(channel, 0)), mode | PDC2xx_TIM_IORDYp),
   4161 			    DEBUG_PROBE);
   4162 			pci_conf_write(sc->sc_pc, sc->sc_tag,
   4163 			    PDC2xx_TIM(channel, 0), mode | PDC2xx_TIM_IORDYp);
   4164 			WDCDEBUG_PRINT(("pdc202xx_setup_chip: channel %d "
   4165 			    "drive 1 initial timings  0x%x, now 0x%x\n",
   4166 			    channel, pci_conf_read(sc->sc_pc, sc->sc_tag,
   4167 			    PDC2xx_TIM(channel, 1)), mode), DEBUG_PROBE);
   4168 			pci_conf_write(sc->sc_pc, sc->sc_tag,
   4169 			    PDC2xx_TIM(channel, 1), mode);
   4170 		}
   4171 
   4172 		mode = PDC2xx_SCR_DMA;
   4173 		if (PDC_IS_262(sc)) {
   4174 			mode = PDC2xx_SCR_SET_GEN(mode, PDC262_SCR_GEN_LAT);
   4175 		} else {
   4176 			/* the BIOS set it up this way */
   4177 			mode = PDC2xx_SCR_SET_GEN(mode, 0x1);
   4178 		}
   4179 		mode = PDC2xx_SCR_SET_I2C(mode, 0x3); /* ditto */
   4180 		mode = PDC2xx_SCR_SET_POLL(mode, 0x1); /* ditto */
   4181 		WDCDEBUG_PRINT(("pdc202xx_setup_chip: initial SCR  0x%x, "
   4182 		    "now 0x%x\n",
   4183 		    bus_space_read_4(sc->sc_dma_iot, sc->sc_dma_ioh,
   4184 			PDC2xx_SCR),
   4185 		    mode), DEBUG_PROBE);
   4186 		bus_space_write_4(sc->sc_dma_iot, sc->sc_dma_ioh,
   4187 		    PDC2xx_SCR, mode);
   4188 
   4189 		/* controller initial state register is OK even without BIOS */
   4190 		/* Set DMA mode to IDE DMA compatibility */
   4191 		mode =
   4192 		    bus_space_read_1(sc->sc_dma_iot, sc->sc_dma_ioh, PDC2xx_PM);
   4193 		WDCDEBUG_PRINT(("pdc202xx_setup_chip: primary mode 0x%x", mode),
   4194 		    DEBUG_PROBE);
   4195 		bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh, PDC2xx_PM,
   4196 		    mode | 0x1);
   4197 		mode =
   4198 		    bus_space_read_1(sc->sc_dma_iot, sc->sc_dma_ioh, PDC2xx_SM);
   4199 		WDCDEBUG_PRINT((", secondary mode 0x%x\n", mode ), DEBUG_PROBE);
   4200 		bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh, PDC2xx_SM,
   4201 		    mode | 0x1);
   4202 	}
   4203 
   4204 	for (channel = 0; channel < sc->sc_wdcdev.nchannels; channel++) {
   4205 		cp = &sc->pciide_channels[channel];
   4206 		if (pciide_chansetup(sc, channel, interface) == 0)
   4207 			continue;
   4208 		if (!PDC_IS_268(sc) && (st & (PDC_IS_262(sc) ?
   4209 		    PDC262_STATE_EN(channel):PDC246_STATE_EN(channel))) == 0) {
   4210 			printf("%s: %s channel ignored (disabled)\n",
   4211 			    sc->sc_wdcdev.sc_dev.dv_xname, cp->name);
   4212 			continue;
   4213 		}
   4214 		if (PDC_IS_265(sc))
   4215 			pciide_mapchan(pa, cp, interface, &cmdsize, &ctlsize,
   4216 			    pdc20265_pci_intr);
   4217 		else
   4218 			pciide_mapchan(pa, cp, interface, &cmdsize, &ctlsize,
   4219 			    pdc202xx_pci_intr);
   4220 		if (cp->hw_ok == 0)
   4221 			continue;
   4222 		if (!PDC_IS_268(sc) && pciide_chan_candisable(cp))
   4223 			st &= ~(PDC_IS_262(sc) ?
   4224 			    PDC262_STATE_EN(channel):PDC246_STATE_EN(channel));
   4225 		pciide_map_compat_intr(pa, cp, channel, interface);
   4226 		sc->sc_wdcdev.set_modes(&cp->wdc_channel);
   4227 	}
   4228 	if (!PDC_IS_268(sc)) {
   4229 		WDCDEBUG_PRINT(("pdc202xx_setup_chip: new controller state "
   4230 		    "0x%x\n", st), DEBUG_PROBE);
   4231 		pci_conf_write(sc->sc_pc, sc->sc_tag, PDC2xx_STATE, st);
   4232 	}
   4233 	return;
   4234 }
   4235 
   4236 void
   4237 pdc202xx_setup_channel(chp)
   4238 	struct channel_softc *chp;
   4239 {
   4240 	struct ata_drive_datas *drvp;
   4241 	int drive;
   4242 	pcireg_t mode, st;
   4243 	u_int32_t idedma_ctl, scr, atapi;
   4244 	struct pciide_channel *cp = (struct pciide_channel*)chp;
   4245 	struct pciide_softc *sc = (struct pciide_softc *)cp->wdc_channel.wdc;
   4246 	int channel = chp->channel;
   4247 
   4248 	/* setup DMA if needed */
   4249 	pciide_channel_dma_setup(cp);
   4250 
   4251 	idedma_ctl = 0;
   4252 	WDCDEBUG_PRINT(("pdc202xx_setup_channel %s: scr 0x%x\n",
   4253 	    sc->sc_wdcdev.sc_dev.dv_xname,
   4254 	    bus_space_read_1(sc->sc_dma_iot, sc->sc_dma_ioh, PDC262_U66)),
   4255 	    DEBUG_PROBE);
   4256 
   4257 	/* Per channel settings */
   4258 	if (PDC_IS_262(sc)) {
   4259 		scr = bus_space_read_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   4260 		    PDC262_U66);
   4261 		st = pci_conf_read(sc->sc_pc, sc->sc_tag, PDC2xx_STATE);
   4262 		/* Trim UDMA mode */
   4263 		if ((st & PDC262_STATE_80P(channel)) != 0 ||
   4264 		    (chp->ch_drive[0].drive_flags & DRIVE_UDMA &&
   4265 		    chp->ch_drive[0].UDMA_mode <= 2) ||
   4266 		    (chp->ch_drive[1].drive_flags & DRIVE_UDMA &&
   4267 		    chp->ch_drive[1].UDMA_mode <= 2)) {
   4268 			if (chp->ch_drive[0].UDMA_mode > 2)
   4269 				chp->ch_drive[0].UDMA_mode = 2;
   4270 			if (chp->ch_drive[1].UDMA_mode > 2)
   4271 				chp->ch_drive[1].UDMA_mode = 2;
   4272 		}
   4273 		/* Set U66 if needed */
   4274 		if ((chp->ch_drive[0].drive_flags & DRIVE_UDMA &&
   4275 		    chp->ch_drive[0].UDMA_mode > 2) ||
   4276 		    (chp->ch_drive[1].drive_flags & DRIVE_UDMA &&
   4277 		    chp->ch_drive[1].UDMA_mode > 2))
   4278 			scr |= PDC262_U66_EN(channel);
   4279 		else
   4280 			scr &= ~PDC262_U66_EN(channel);
   4281 		bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   4282 		    PDC262_U66, scr);
   4283 		WDCDEBUG_PRINT(("pdc202xx_setup_channel %s:%d: ATAPI 0x%x\n",
   4284 		    sc->sc_wdcdev.sc_dev.dv_xname, channel,
   4285 		    bus_space_read_4(sc->sc_dma_iot, sc->sc_dma_ioh,
   4286 		    PDC262_ATAPI(channel))), DEBUG_PROBE);
   4287 		if (chp->ch_drive[0].drive_flags & DRIVE_ATAPI ||
   4288 			chp->ch_drive[1].drive_flags & DRIVE_ATAPI) {
   4289 			if (((chp->ch_drive[0].drive_flags & DRIVE_UDMA) &&
   4290 			    !(chp->ch_drive[1].drive_flags & DRIVE_UDMA) &&
   4291 			    (chp->ch_drive[1].drive_flags & DRIVE_DMA)) ||
   4292 			    ((chp->ch_drive[1].drive_flags & DRIVE_UDMA) &&
   4293 			    !(chp->ch_drive[0].drive_flags & DRIVE_UDMA) &&
   4294 			    (chp->ch_drive[0].drive_flags & DRIVE_DMA)))
   4295 				atapi = 0;
   4296 			else
   4297 				atapi = PDC262_ATAPI_UDMA;
   4298 			bus_space_write_4(sc->sc_dma_iot, sc->sc_dma_ioh,
   4299 			    PDC262_ATAPI(channel), atapi);
   4300 		}
   4301 	}
   4302 	for (drive = 0; drive < 2; drive++) {
   4303 		drvp = &chp->ch_drive[drive];
   4304 		/* If no drive, skip */
   4305 		if ((drvp->drive_flags & DRIVE) == 0)
   4306 			continue;
   4307 		mode = 0;
   4308 		if (drvp->drive_flags & DRIVE_UDMA) {
   4309 			/* use Ultra/DMA */
   4310 			drvp->drive_flags &= ~DRIVE_DMA;
   4311 			mode = PDC2xx_TIM_SET_MB(mode,
   4312 			    pdc2xx_udma_mb[drvp->UDMA_mode]);
   4313 			mode = PDC2xx_TIM_SET_MC(mode,
   4314 			    pdc2xx_udma_mc[drvp->UDMA_mode]);
   4315 			idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
   4316 		} else if (drvp->drive_flags & DRIVE_DMA) {
   4317 			mode = PDC2xx_TIM_SET_MB(mode,
   4318 			    pdc2xx_dma_mb[drvp->DMA_mode]);
   4319 			mode = PDC2xx_TIM_SET_MC(mode,
   4320 			    pdc2xx_dma_mc[drvp->DMA_mode]);
   4321 			idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
   4322 		} else {
   4323 			mode = PDC2xx_TIM_SET_MB(mode,
   4324 			    pdc2xx_dma_mb[0]);
   4325 			mode = PDC2xx_TIM_SET_MC(mode,
   4326 			    pdc2xx_dma_mc[0]);
   4327 		}
   4328 		mode = PDC2xx_TIM_SET_PA(mode, pdc2xx_pa[drvp->PIO_mode]);
   4329 		mode = PDC2xx_TIM_SET_PB(mode, pdc2xx_pb[drvp->PIO_mode]);
   4330 		if (drvp->drive_flags & DRIVE_ATA)
   4331 			mode |= PDC2xx_TIM_PRE;
   4332 		mode |= PDC2xx_TIM_SYNC | PDC2xx_TIM_ERRDY;
   4333 		if (drvp->PIO_mode >= 3) {
   4334 			mode |= PDC2xx_TIM_IORDY;
   4335 			if (drive == 0)
   4336 				mode |= PDC2xx_TIM_IORDYp;
   4337 		}
   4338 		WDCDEBUG_PRINT(("pdc202xx_setup_channel: %s:%d:%d "
   4339 		    "timings 0x%x\n",
   4340 		    sc->sc_wdcdev.sc_dev.dv_xname,
   4341 		    chp->channel, drive, mode), DEBUG_PROBE);
   4342 		pci_conf_write(sc->sc_pc, sc->sc_tag,
   4343 		    PDC2xx_TIM(chp->channel, drive), mode);
   4344 	}
   4345 	if (idedma_ctl != 0) {
   4346 		/* Add software bits in status register */
   4347 		bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   4348 		    IDEDMA_CTL + (IDEDMA_SCH_OFFSET * chp->channel),
   4349 		    idedma_ctl);
   4350 	}
   4351 	pciide_print_modes(cp);
   4352 }
   4353 
   4354 void
   4355 pdc20268_setup_channel(chp)
   4356 	struct channel_softc *chp;
   4357 {
   4358 	struct ata_drive_datas *drvp;
   4359 	int drive;
   4360 	u_int32_t idedma_ctl;
   4361 	struct pciide_channel *cp = (struct pciide_channel*)chp;
   4362 	struct pciide_softc *sc = (struct pciide_softc *)cp->wdc_channel.wdc;
   4363 	int u100;
   4364 
   4365 	/* setup DMA if needed */
   4366 	pciide_channel_dma_setup(cp);
   4367 
   4368 	idedma_ctl = 0;
   4369 
   4370 	/* I don't know what this is for, FreeBSD does it ... */
   4371 	bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   4372 	    IDEDMA_CMD + 0x1, 0x0b);
   4373 
   4374 	/*
   4375 	 * I don't know what this is for; FreeBSD checks this ... this is not
   4376 	 * cable type detect.
   4377 	 */
   4378 	u100 = (bus_space_read_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   4379 	    IDEDMA_CMD + 0x3) & 0x04) ? 0 : 1;
   4380 
   4381 	for (drive = 0; drive < 2; drive++) {
   4382 		drvp = &chp->ch_drive[drive];
   4383 		/* If no drive, skip */
   4384 		if ((drvp->drive_flags & DRIVE) == 0)
   4385 			continue;
   4386 		if (drvp->drive_flags & DRIVE_UDMA) {
   4387 			/* use Ultra/DMA */
   4388 			drvp->drive_flags &= ~DRIVE_DMA;
   4389 			idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
   4390 			if (drvp->UDMA_mode > 2 && u100 == 0)
   4391 				drvp->UDMA_mode = 2;
   4392 		} else if (drvp->drive_flags & DRIVE_DMA) {
   4393 			idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
   4394 		}
   4395 	}
   4396 	/* nothing to do to setup modes, the controller snoop SET_FEATURE cmd */
   4397 	if (idedma_ctl != 0) {
   4398 		/* Add software bits in status register */
   4399 		bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   4400 		    IDEDMA_CTL + (IDEDMA_SCH_OFFSET * chp->channel),
   4401 		    idedma_ctl);
   4402 	}
   4403 	pciide_print_modes(cp);
   4404 }
   4405 
   4406 int
   4407 pdc202xx_pci_intr(arg)
   4408 	void *arg;
   4409 {
   4410 	struct pciide_softc *sc = arg;
   4411 	struct pciide_channel *cp;
   4412 	struct channel_softc *wdc_cp;
   4413 	int i, rv, crv;
   4414 	u_int32_t scr;
   4415 
   4416 	rv = 0;
   4417 	scr = bus_space_read_4(sc->sc_dma_iot, sc->sc_dma_ioh, PDC2xx_SCR);
   4418 	for (i = 0; i < sc->sc_wdcdev.nchannels; i++) {
   4419 		cp = &sc->pciide_channels[i];
   4420 		wdc_cp = &cp->wdc_channel;
   4421 		/* If a compat channel skip. */
   4422 		if (cp->compat)
   4423 			continue;
   4424 		if (scr & PDC2xx_SCR_INT(i)) {
   4425 			crv = wdcintr(wdc_cp);
   4426 			if (crv == 0)
   4427 				printf("%s:%d: bogus intr (reg 0x%x)\n",
   4428 				    sc->sc_wdcdev.sc_dev.dv_xname, i, scr);
   4429 			else
   4430 				rv = 1;
   4431 		}
   4432 	}
   4433 	return rv;
   4434 }
   4435 
   4436 int
   4437 pdc20265_pci_intr(arg)
   4438 	void *arg;
   4439 {
   4440 	struct pciide_softc *sc = arg;
   4441 	struct pciide_channel *cp;
   4442 	struct channel_softc *wdc_cp;
   4443 	int i, rv, crv;
   4444 	u_int32_t dmastat;
   4445 
   4446 	rv = 0;
   4447 	for (i = 0; i < sc->sc_wdcdev.nchannels; i++) {
   4448 		cp = &sc->pciide_channels[i];
   4449 		wdc_cp = &cp->wdc_channel;
   4450 		/* If a compat channel skip. */
   4451 		if (cp->compat)
   4452 			continue;
   4453 		/*
   4454 		 * The Ultra/100 seems to assert PDC2xx_SCR_INT * spuriously,
   4455 		 * however it asserts INT in IDEDMA_CTL even for non-DMA ops.
   4456 		 * So use it instead (requires 2 reg reads instead of 1,
   4457 		 * but we can't do it another way).
   4458 		 */
   4459 		dmastat = bus_space_read_1(sc->sc_dma_iot,
   4460 		    sc->sc_dma_ioh, IDEDMA_CTL + IDEDMA_SCH_OFFSET * i);
   4461 		if((dmastat & IDEDMA_CTL_INTR) == 0)
   4462 			continue;
   4463 		crv = wdcintr(wdc_cp);
   4464 		if (crv == 0)
   4465 			printf("%s:%d: bogus intr\n",
   4466 			    sc->sc_wdcdev.sc_dev.dv_xname, i);
   4467 		else
   4468 			rv = 1;
   4469 	}
   4470 	return rv;
   4471 }
   4472 
   4473 void
   4474 opti_chip_map(sc, pa)
   4475 	struct pciide_softc *sc;
   4476 	struct pci_attach_args *pa;
   4477 {
   4478 	struct pciide_channel *cp;
   4479 	bus_size_t cmdsize, ctlsize;
   4480 	pcireg_t interface;
   4481 	u_int8_t init_ctrl;
   4482 	int channel;
   4483 
   4484 	if (pciide_chipen(sc, pa) == 0)
   4485 		return;
   4486 	printf("%s: bus-master DMA support present",
   4487 	    sc->sc_wdcdev.sc_dev.dv_xname);
   4488 
   4489 	/*
   4490 	 * XXXSCW:
   4491 	 * There seem to be a couple of buggy revisions/implementations
   4492 	 * of the OPTi pciide chipset. This kludge seems to fix one of
   4493 	 * the reported problems (PR/11644) but still fails for the
   4494 	 * other (PR/13151), although the latter may be due to other
   4495 	 * issues too...
   4496 	 */
   4497 	if (PCI_REVISION(pa->pa_class) <= 0x12) {
   4498 		printf(" but disabled due to chip rev. <= 0x12");
   4499 		sc->sc_dma_ok = 0;
   4500 	} else
   4501 		pciide_mapreg_dma(sc, pa);
   4502 
   4503 	printf("\n");
   4504 
   4505 	sc->sc_wdcdev.cap = WDC_CAPABILITY_DATA32 | WDC_CAPABILITY_DATA16 |
   4506 		WDC_CAPABILITY_MODE;
   4507 	sc->sc_wdcdev.PIO_cap = 4;
   4508 	if (sc->sc_dma_ok) {
   4509 		sc->sc_wdcdev.cap |= WDC_CAPABILITY_DMA | WDC_CAPABILITY_IRQACK;
   4510 		sc->sc_wdcdev.irqack = pciide_irqack;
   4511 		sc->sc_wdcdev.DMA_cap = 2;
   4512 	}
   4513 	sc->sc_wdcdev.set_modes = opti_setup_channel;
   4514 
   4515 	sc->sc_wdcdev.channels = sc->wdc_chanarray;
   4516 	sc->sc_wdcdev.nchannels = PCIIDE_NUM_CHANNELS;
   4517 
   4518 	init_ctrl = pciide_pci_read(sc->sc_pc, sc->sc_tag,
   4519 	    OPTI_REG_INIT_CONTROL);
   4520 
   4521 	interface = PCI_INTERFACE(pa->pa_class);
   4522 
   4523 	for (channel = 0; channel < sc->sc_wdcdev.nchannels; channel++) {
   4524 		cp = &sc->pciide_channels[channel];
   4525 		if (pciide_chansetup(sc, channel, interface) == 0)
   4526 			continue;
   4527 		if (channel == 1 &&
   4528 		    (init_ctrl & OPTI_INIT_CONTROL_CH2_DISABLE) != 0) {
   4529 			printf("%s: %s channel ignored (disabled)\n",
   4530 			    sc->sc_wdcdev.sc_dev.dv_xname, cp->name);
   4531 			continue;
   4532 		}
   4533 		pciide_mapchan(pa, cp, interface, &cmdsize, &ctlsize,
   4534 		    pciide_pci_intr);
   4535 		if (cp->hw_ok == 0)
   4536 			continue;
   4537 		pciide_map_compat_intr(pa, cp, channel, interface);
   4538 		if (cp->hw_ok == 0)
   4539 			continue;
   4540 		opti_setup_channel(&cp->wdc_channel);
   4541 	}
   4542 }
   4543 
   4544 void
   4545 opti_setup_channel(chp)
   4546 	struct channel_softc *chp;
   4547 {
   4548 	struct ata_drive_datas *drvp;
   4549 	struct pciide_channel *cp = (struct pciide_channel*)chp;
   4550 	struct pciide_softc *sc = (struct pciide_softc *)cp->wdc_channel.wdc;
   4551 	int drive, spd;
   4552 	int mode[2];
   4553 	u_int8_t rv, mr;
   4554 
   4555 	/*
   4556 	 * The `Delay' and `Address Setup Time' fields of the
   4557 	 * Miscellaneous Register are always zero initially.
   4558 	 */
   4559 	mr = opti_read_config(chp, OPTI_REG_MISC) & ~OPTI_MISC_INDEX_MASK;
   4560 	mr &= ~(OPTI_MISC_DELAY_MASK |
   4561 		OPTI_MISC_ADDR_SETUP_MASK |
   4562 		OPTI_MISC_INDEX_MASK);
   4563 
   4564 	/* Prime the control register before setting timing values */
   4565 	opti_write_config(chp, OPTI_REG_CONTROL, OPTI_CONTROL_DISABLE);
   4566 
   4567 	/* Determine the clockrate of the PCIbus the chip is attached to */
   4568 	spd = (int) opti_read_config(chp, OPTI_REG_STRAP);
   4569 	spd &= OPTI_STRAP_PCI_SPEED_MASK;
   4570 
   4571 	/* setup DMA if needed */
   4572 	pciide_channel_dma_setup(cp);
   4573 
   4574 	for (drive = 0; drive < 2; drive++) {
   4575 		drvp = &chp->ch_drive[drive];
   4576 		/* If no drive, skip */
   4577 		if ((drvp->drive_flags & DRIVE) == 0) {
   4578 			mode[drive] = -1;
   4579 			continue;
   4580 		}
   4581 
   4582 		if ((drvp->drive_flags & DRIVE_DMA)) {
   4583 			/*
   4584 			 * Timings will be used for both PIO and DMA,
   4585 			 * so adjust DMA mode if needed
   4586 			 */
   4587 			if (drvp->PIO_mode > (drvp->DMA_mode + 2))
   4588 				drvp->PIO_mode = drvp->DMA_mode + 2;
   4589 			if (drvp->DMA_mode + 2 > (drvp->PIO_mode))
   4590 				drvp->DMA_mode = (drvp->PIO_mode > 2) ?
   4591 				    drvp->PIO_mode - 2 : 0;
   4592 			if (drvp->DMA_mode == 0)
   4593 				drvp->PIO_mode = 0;
   4594 
   4595 			mode[drive] = drvp->DMA_mode + 5;
   4596 		} else
   4597 			mode[drive] = drvp->PIO_mode;
   4598 
   4599 		if (drive && mode[0] >= 0 &&
   4600 		    (opti_tim_as[spd][mode[0]] != opti_tim_as[spd][mode[1]])) {
   4601 			/*
   4602 			 * Can't have two drives using different values
   4603 			 * for `Address Setup Time'.
   4604 			 * Slow down the faster drive to compensate.
   4605 			 */
   4606 			int d = (opti_tim_as[spd][mode[0]] >
   4607 				 opti_tim_as[spd][mode[1]]) ?  0 : 1;
   4608 
   4609 			mode[d] = mode[1-d];
   4610 			chp->ch_drive[d].PIO_mode = chp->ch_drive[1-d].PIO_mode;
   4611 			chp->ch_drive[d].DMA_mode = 0;
   4612 			chp->ch_drive[d].drive_flags &= ~DRIVE_DMA;
   4613 		}
   4614 	}
   4615 
   4616 	for (drive = 0; drive < 2; drive++) {
   4617 		int m;
   4618 		if ((m = mode[drive]) < 0)
   4619 			continue;
   4620 
   4621 		/* Set the Address Setup Time and select appropriate index */
   4622 		rv = opti_tim_as[spd][m] << OPTI_MISC_ADDR_SETUP_SHIFT;
   4623 		rv |= OPTI_MISC_INDEX(drive);
   4624 		opti_write_config(chp, OPTI_REG_MISC, mr | rv);
   4625 
   4626 		/* Set the pulse width and recovery timing parameters */
   4627 		rv  = opti_tim_cp[spd][m] << OPTI_PULSE_WIDTH_SHIFT;
   4628 		rv |= opti_tim_rt[spd][m] << OPTI_RECOVERY_TIME_SHIFT;
   4629 		opti_write_config(chp, OPTI_REG_READ_CYCLE_TIMING, rv);
   4630 		opti_write_config(chp, OPTI_REG_WRITE_CYCLE_TIMING, rv);
   4631 
   4632 		/* Set the Enhanced Mode register appropriately */
   4633 	    	rv = pciide_pci_read(sc->sc_pc, sc->sc_tag, OPTI_REG_ENH_MODE);
   4634 		rv &= ~OPTI_ENH_MODE_MASK(chp->channel, drive);
   4635 		rv |= OPTI_ENH_MODE(chp->channel, drive, opti_tim_em[m]);
   4636 		pciide_pci_write(sc->sc_pc, sc->sc_tag, OPTI_REG_ENH_MODE, rv);
   4637 	}
   4638 
   4639 	/* Finally, enable the timings */
   4640 	opti_write_config(chp, OPTI_REG_CONTROL, OPTI_CONTROL_ENABLE);
   4641 
   4642 	pciide_print_modes(cp);
   4643 }
   4644 
   4645 #define	ACARD_IS_850(sc)						\
   4646 	((sc)->sc_pp->ide_product == PCI_PRODUCT_ACARD_ATP850U)
   4647 
   4648 void
   4649 acard_chip_map(sc, pa)
   4650 	struct pciide_softc *sc;
   4651 	struct pci_attach_args *pa;
   4652 {
   4653 	struct pciide_channel *cp;
   4654 	int i;
   4655 	pcireg_t interface;
   4656 	bus_size_t cmdsize, ctlsize;
   4657 
   4658 	if (pciide_chipen(sc, pa) == 0)
   4659 		return;
   4660 
   4661 	/*
   4662 	 * when the chip is in native mode it identifies itself as a
   4663 	 * 'misc mass storage'. Fake interface in this case.
   4664 	 */
   4665 	if (PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_MASS_STORAGE_IDE) {
   4666 		interface = PCI_INTERFACE(pa->pa_class);
   4667 	} else {
   4668 		interface = PCIIDE_INTERFACE_BUS_MASTER_DMA |
   4669 		    PCIIDE_INTERFACE_PCI(0) | PCIIDE_INTERFACE_PCI(1);
   4670 	}
   4671 
   4672 	printf("%s: bus-master DMA support present",
   4673 	    sc->sc_wdcdev.sc_dev.dv_xname);
   4674 	pciide_mapreg_dma(sc, pa);
   4675 	printf("\n");
   4676 	sc->sc_wdcdev.cap = WDC_CAPABILITY_DATA16 | WDC_CAPABILITY_DATA32 |
   4677 	    WDC_CAPABILITY_MODE;
   4678 
   4679 	if (sc->sc_dma_ok) {
   4680 		sc->sc_wdcdev.cap |= WDC_CAPABILITY_DMA | WDC_CAPABILITY_UDMA;
   4681 		sc->sc_wdcdev.cap |= WDC_CAPABILITY_IRQACK;
   4682 		sc->sc_wdcdev.irqack = pciide_irqack;
   4683 	}
   4684 	sc->sc_wdcdev.PIO_cap = 4;
   4685 	sc->sc_wdcdev.DMA_cap = 2;
   4686 	sc->sc_wdcdev.UDMA_cap = ACARD_IS_850(sc) ? 2 : 4;
   4687 
   4688 	sc->sc_wdcdev.set_modes = acard_setup_channel;
   4689 	sc->sc_wdcdev.channels = sc->wdc_chanarray;
   4690 	sc->sc_wdcdev.nchannels = 2;
   4691 
   4692 	for (i = 0; i < sc->sc_wdcdev.nchannels; i++) {
   4693 		cp = &sc->pciide_channels[i];
   4694 		if (pciide_chansetup(sc, i, interface) == 0)
   4695 			continue;
   4696 		if (interface & PCIIDE_INTERFACE_PCI(i)) {
   4697 			cp->hw_ok = pciide_mapregs_native(pa, cp, &cmdsize,
   4698 			    &ctlsize, pciide_pci_intr);
   4699 		} else {
   4700 			cp->hw_ok = pciide_mapregs_compat(pa, cp, i,
   4701 			    &cmdsize, &ctlsize);
   4702 		}
   4703 		if (cp->hw_ok == 0)
   4704 			return;
   4705 		cp->wdc_channel.data32iot = cp->wdc_channel.cmd_iot;
   4706 		cp->wdc_channel.data32ioh = cp->wdc_channel.cmd_ioh;
   4707 		wdcattach(&cp->wdc_channel);
   4708 		acard_setup_channel(&cp->wdc_channel);
   4709 	}
   4710 	if (!ACARD_IS_850(sc)) {
   4711 		u_int32_t reg;
   4712 		reg = pci_conf_read(sc->sc_pc, sc->sc_tag, ATP8x0_CTRL);
   4713 		reg &= ~ATP860_CTRL_INT;
   4714 		pci_conf_write(sc->sc_pc, sc->sc_tag, ATP8x0_CTRL, reg);
   4715 	}
   4716 }
   4717 
   4718 void
   4719 acard_setup_channel(chp)
   4720 	struct channel_softc *chp;
   4721 {
   4722 	struct ata_drive_datas *drvp;
   4723 	struct pciide_channel *cp = (struct pciide_channel*)chp;
   4724 	struct pciide_softc *sc = (struct pciide_softc *)cp->wdc_channel.wdc;
   4725 	int channel = chp->channel;
   4726 	int drive;
   4727 	u_int32_t idetime, udma_mode;
   4728 	u_int32_t idedma_ctl;
   4729 
   4730 	/* setup DMA if needed */
   4731 	pciide_channel_dma_setup(cp);
   4732 
   4733 	if (ACARD_IS_850(sc)) {
   4734 		idetime = 0;
   4735 		udma_mode = pci_conf_read(sc->sc_pc, sc->sc_tag, ATP850_UDMA);
   4736 		udma_mode &= ~ATP850_UDMA_MASK(channel);
   4737 	} else {
   4738 		idetime = pci_conf_read(sc->sc_pc, sc->sc_tag, ATP860_IDETIME);
   4739 		idetime &= ~ATP860_SETTIME_MASK(channel);
   4740 		udma_mode = pci_conf_read(sc->sc_pc, sc->sc_tag, ATP860_UDMA);
   4741 		udma_mode &= ~ATP860_UDMA_MASK(channel);
   4742 
   4743 		/* check 80 pins cable */
   4744 		if ((chp->ch_drive[0].drive_flags & DRIVE_UDMA) ||
   4745 		    (chp->ch_drive[1].drive_flags & DRIVE_UDMA)) {
   4746 			if (pci_conf_read(sc->sc_pc, sc->sc_tag, ATP8x0_CTRL)
   4747 			    & ATP860_CTRL_80P(chp->channel)) {
   4748 				if (chp->ch_drive[0].UDMA_mode > 2)
   4749 					chp->ch_drive[0].UDMA_mode = 2;
   4750 				if (chp->ch_drive[1].UDMA_mode > 2)
   4751 					chp->ch_drive[1].UDMA_mode = 2;
   4752 			}
   4753 		}
   4754 	}
   4755 
   4756 	idedma_ctl = 0;
   4757 
   4758 	/* Per drive settings */
   4759 	for (drive = 0; drive < 2; drive++) {
   4760 		drvp = &chp->ch_drive[drive];
   4761 		/* If no drive, skip */
   4762 		if ((drvp->drive_flags & DRIVE) == 0)
   4763 			continue;
   4764 		/* add timing values, setup DMA if needed */
   4765 		if ((chp->wdc->cap & WDC_CAPABILITY_UDMA) &&
   4766 		    (drvp->drive_flags & DRIVE_UDMA)) {
   4767 			/* use Ultra/DMA */
   4768 			if (ACARD_IS_850(sc)) {
   4769 				idetime |= ATP850_SETTIME(drive,
   4770 				    acard_act_udma[drvp->UDMA_mode],
   4771 				    acard_rec_udma[drvp->UDMA_mode]);
   4772 				udma_mode |= ATP850_UDMA_MODE(channel, drive,
   4773 				    acard_udma_conf[drvp->UDMA_mode]);
   4774 			} else {
   4775 				idetime |= ATP860_SETTIME(channel, drive,
   4776 				    acard_act_udma[drvp->UDMA_mode],
   4777 				    acard_rec_udma[drvp->UDMA_mode]);
   4778 				udma_mode |= ATP860_UDMA_MODE(channel, drive,
   4779 				    acard_udma_conf[drvp->UDMA_mode]);
   4780 			}
   4781 			idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
   4782 		} else if ((chp->wdc->cap & WDC_CAPABILITY_DMA) &&
   4783 		    (drvp->drive_flags & DRIVE_DMA)) {
   4784 			/* use Multiword DMA */
   4785 			drvp->drive_flags &= ~DRIVE_UDMA;
   4786 			if (ACARD_IS_850(sc)) {
   4787 				idetime |= ATP850_SETTIME(drive,
   4788 				    acard_act_dma[drvp->DMA_mode],
   4789 				    acard_rec_dma[drvp->DMA_mode]);
   4790 			} else {
   4791 				idetime |= ATP860_SETTIME(channel, drive,
   4792 				    acard_act_dma[drvp->DMA_mode],
   4793 				    acard_rec_dma[drvp->DMA_mode]);
   4794 			}
   4795 			idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
   4796 		} else {
   4797 			/* PIO only */
   4798 			drvp->drive_flags &= ~(DRIVE_UDMA | DRIVE_DMA);
   4799 			if (ACARD_IS_850(sc)) {
   4800 				idetime |= ATP850_SETTIME(drive,
   4801 				    acard_act_pio[drvp->PIO_mode],
   4802 				    acard_rec_pio[drvp->PIO_mode]);
   4803 			} else {
   4804 				idetime |= ATP860_SETTIME(channel, drive,
   4805 				    acard_act_pio[drvp->PIO_mode],
   4806 				    acard_rec_pio[drvp->PIO_mode]);
   4807 			}
   4808 		pci_conf_write(sc->sc_pc, sc->sc_tag, ATP8x0_CTRL,
   4809 		    pci_conf_read(sc->sc_pc, sc->sc_tag, ATP8x0_CTRL)
   4810 		    | ATP8x0_CTRL_EN(channel));
   4811 		}
   4812 	}
   4813 
   4814 	if (idedma_ctl != 0) {
   4815 		/* Add software bits in status register */
   4816 		bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   4817 		    IDEDMA_CTL + IDEDMA_SCH_OFFSET * channel, idedma_ctl);
   4818 	}
   4819 	pciide_print_modes(cp);
   4820 
   4821 	if (ACARD_IS_850(sc)) {
   4822 		pci_conf_write(sc->sc_pc, sc->sc_tag,
   4823 		    ATP850_IDETIME(channel), idetime);
   4824 		pci_conf_write(sc->sc_pc, sc->sc_tag, ATP850_UDMA, udma_mode);
   4825 	} else {
   4826 		pci_conf_write(sc->sc_pc, sc->sc_tag, ATP860_IDETIME, idetime);
   4827 		pci_conf_write(sc->sc_pc, sc->sc_tag, ATP860_UDMA, udma_mode);
   4828 	}
   4829 }
   4830 
   4831 int
   4832 acard_pci_intr(arg)
   4833 	void *arg;
   4834 {
   4835 	struct pciide_softc *sc = arg;
   4836 	struct pciide_channel *cp;
   4837 	struct channel_softc *wdc_cp;
   4838 	int rv = 0;
   4839 	int dmastat, i, crv;
   4840 
   4841 	for (i = 0; i < sc->sc_wdcdev.nchannels; i++) {
   4842 		dmastat = bus_space_read_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   4843 		    IDEDMA_CTL + IDEDMA_SCH_OFFSET * i);
   4844 		if ((dmastat & IDEDMA_CTL_INTR) == 0)
   4845 			continue;
   4846 		cp = &sc->pciide_channels[i];
   4847 		wdc_cp = &cp->wdc_channel;
   4848 		if ((wdc_cp->ch_flags & WDCF_IRQ_WAIT) == 0) {
   4849 			(void)wdcintr(wdc_cp);
   4850 			bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   4851 			    IDEDMA_CTL + IDEDMA_SCH_OFFSET * i, dmastat);
   4852 			continue;
   4853 		}
   4854 		crv = wdcintr(wdc_cp);
   4855 		if (crv == 0)
   4856 			printf("%s:%d: bogus intr\n",
   4857 			    sc->sc_wdcdev.sc_dev.dv_xname, i);
   4858 		else if (crv == 1)
   4859 			rv = 1;
   4860 		else if (rv == 0)
   4861 			rv = crv;
   4862 	}
   4863 	return rv;
   4864 }
   4865 
   4866 static int
   4867 sl82c105_bugchk(struct pci_attach_args *pa)
   4868 {
   4869 
   4870 	if (PCI_VENDOR(pa->pa_id) != PCI_VENDOR_WINBOND ||
   4871 	    PCI_PRODUCT(pa->pa_id) != PCI_PRODUCT_WINBOND_W83C553F_0)
   4872 		return (0);
   4873 
   4874 	if (PCI_REVISION(pa->pa_class) <= 0x05)
   4875 		return (1);
   4876 
   4877 	return (0);
   4878 }
   4879 
   4880 void
   4881 sl82c105_chip_map(sc, pa)
   4882 	struct pciide_softc *sc;
   4883 	struct pci_attach_args *pa;
   4884 {
   4885 	struct pciide_channel *cp;
   4886 	bus_size_t cmdsize, ctlsize;
   4887 	pcireg_t interface, idecr;
   4888 	int channel;
   4889 
   4890 	if (pciide_chipen(sc, pa) == 0)
   4891 		return;
   4892 
   4893 	printf("%s: bus-master DMA support present",
   4894 	    sc->sc_wdcdev.sc_dev.dv_xname);
   4895 
   4896 	/*
   4897 	 * Check to see if we're part of the Winbond 83c553 Southbridge.
   4898 	 * If so, we need to disable DMA on rev. <= 5 of that chip.
   4899 	 */
   4900 	if (pci_find_device(pa, sl82c105_bugchk)) {
   4901 		printf(" but disabled due to 83c553 rev. <= 0x05");
   4902 		sc->sc_dma_ok = 0;
   4903 	} else
   4904 		pciide_mapreg_dma(sc, pa);
   4905 	printf("\n");
   4906 
   4907 	sc->sc_wdcdev.cap = WDC_CAPABILITY_DATA32 | WDC_CAPABILITY_DATA16 |
   4908 	    WDC_CAPABILITY_MODE;
   4909 	sc->sc_wdcdev.PIO_cap = 4;
   4910 	if (sc->sc_dma_ok) {
   4911 		sc->sc_wdcdev.cap |= WDC_CAPABILITY_DMA | WDC_CAPABILITY_IRQACK;
   4912 		sc->sc_wdcdev.irqack = pciide_irqack;
   4913 		sc->sc_wdcdev.DMA_cap = 2;
   4914 	}
   4915 	sc->sc_wdcdev.set_modes = sl82c105_setup_channel;
   4916 
   4917 	sc->sc_wdcdev.channels = sc->wdc_chanarray;
   4918 	sc->sc_wdcdev.nchannels = PCIIDE_NUM_CHANNELS;
   4919 
   4920 	idecr = pci_conf_read(sc->sc_pc, sc->sc_tag, SYMPH_IDECSR);
   4921 
   4922 	interface = PCI_INTERFACE(pa->pa_class);
   4923 
   4924 	for (channel = 0; channel < sc->sc_wdcdev.nchannels; channel++) {
   4925 		cp = &sc->pciide_channels[channel];
   4926 		if (pciide_chansetup(sc, channel, interface) == 0)
   4927 			continue;
   4928 		if ((channel == 0 && (idecr & IDECR_P0EN) == 0) ||
   4929 		    (channel == 1 && (idecr & IDECR_P1EN) == 0)) {
   4930 			printf("%s: %s channel ignored (disabled)\n",
   4931 			    sc->sc_wdcdev.sc_dev.dv_xname, cp->name);
   4932 			continue;
   4933 		}
   4934 		pciide_mapchan(pa, cp, interface, &cmdsize, &ctlsize,
   4935 		    pciide_pci_intr);
   4936 		if (cp->hw_ok == 0)
   4937 			continue;
   4938 		pciide_map_compat_intr(pa, cp, channel, interface);
   4939 		if (cp->hw_ok == 0)
   4940 			continue;
   4941 		sl82c105_setup_channel(&cp->wdc_channel);
   4942 	}
   4943 }
   4944 
   4945 void
   4946 sl82c105_setup_channel(chp)
   4947 	struct channel_softc *chp;
   4948 {
   4949 	struct ata_drive_datas *drvp;
   4950 	struct pciide_channel *cp = (struct pciide_channel*)chp;
   4951 	struct pciide_softc *sc = (struct pciide_softc *)cp->wdc_channel.wdc;
   4952 	int pxdx_reg, drive;
   4953 	pcireg_t pxdx;
   4954 
   4955 	/* Set up DMA if needed. */
   4956 	pciide_channel_dma_setup(cp);
   4957 
   4958 	for (drive = 0; drive < 2; drive++) {
   4959 		pxdx_reg = ((chp->channel == 0) ? SYMPH_P0D0CR
   4960 						: SYMPH_P1D0CR) + (drive * 4);
   4961 
   4962 		pxdx = pci_conf_read(sc->sc_pc, sc->sc_tag, pxdx_reg);
   4963 
   4964 		pxdx &= ~(PxDx_CMD_ON_MASK|PxDx_CMD_OFF_MASK);
   4965 		pxdx &= ~(PxDx_PWEN|PxDx_RDYEN|PxDx_RAEN);
   4966 
   4967 		drvp = &chp->ch_drive[drive];
   4968 		/* If no drive, skip. */
   4969 		if ((drvp->drive_flags & DRIVE) == 0) {
   4970 			pci_conf_write(sc->sc_pc, sc->sc_tag, pxdx_reg, pxdx);
   4971 			continue;
   4972 		}
   4973 
   4974 		if (drvp->drive_flags & DRIVE_DMA) {
   4975 			/*
   4976 			 * Timings will be used for both PIO and DMA,
   4977 			 * so adjust DMA mode if needed.
   4978 			 */
   4979 			if (drvp->PIO_mode >= 3) {
   4980 				if ((drvp->DMA_mode + 2) > drvp->PIO_mode)
   4981 					drvp->DMA_mode = drvp->PIO_mode - 2;
   4982 				if (drvp->DMA_mode < 1) {
   4983 					/*
   4984 					 * Can't mix both PIO and DMA.
   4985 					 * Disable DMA.
   4986 					 */
   4987 					drvp->drive_flags &= ~DRIVE_DMA;
   4988 				}
   4989 			} else {
   4990 				/*
   4991 				 * Can't mix both PIO and DMA.  Disable
   4992 				 * DMA.
   4993 				 */
   4994 				drvp->drive_flags &= ~DRIVE_DMA;
   4995 			}
   4996 		}
   4997 
   4998 		if (drvp->drive_flags & DRIVE_DMA) {
   4999 			/* Use multi-word DMA. */
   5000 			pxdx |= symph_mw_dma_times[drvp->DMA_mode].cmd_on <<
   5001 			    PxDx_CMD_ON_SHIFT;
   5002 			pxdx |= symph_mw_dma_times[drvp->DMA_mode].cmd_off;
   5003 		} else {
   5004 			pxdx |= symph_pio_times[drvp->PIO_mode].cmd_on <<
   5005 			    PxDx_CMD_ON_SHIFT;
   5006 			pxdx |= symph_pio_times[drvp->PIO_mode].cmd_off;
   5007 		}
   5008 
   5009 		/* XXX PxDx_PWEN? PxDx_RDYEN? PxDx_RAEN? */
   5010 
   5011 		/* ...and set the mode for this drive. */
   5012 		pci_conf_write(sc->sc_pc, sc->sc_tag, pxdx_reg, pxdx);
   5013 	}
   5014 
   5015 	pciide_print_modes(cp);
   5016 }
   5017 
   5018 void
   5019 serverworks_chip_map(sc, pa)
   5020 	struct pciide_softc *sc;
   5021 	struct pci_attach_args *pa;
   5022 {
   5023 	struct pciide_channel *cp;
   5024 	pcireg_t interface = PCI_INTERFACE(pa->pa_class);
   5025 	pcitag_t pcib_tag;
   5026 	int channel;
   5027 	bus_size_t cmdsize, ctlsize;
   5028 
   5029 	if (pciide_chipen(sc, pa) == 0)
   5030 		return;
   5031 
   5032 	printf("%s: bus-master DMA support present",
   5033 	    sc->sc_wdcdev.sc_dev.dv_xname);
   5034 	pciide_mapreg_dma(sc, pa);
   5035 	printf("\n");
   5036 	sc->sc_wdcdev.cap = WDC_CAPABILITY_DATA16 | WDC_CAPABILITY_DATA32 |
   5037 	    WDC_CAPABILITY_MODE;
   5038 
   5039 	if (sc->sc_dma_ok) {
   5040 		sc->sc_wdcdev.cap |= WDC_CAPABILITY_DMA | WDC_CAPABILITY_UDMA;
   5041 		sc->sc_wdcdev.cap |= WDC_CAPABILITY_IRQACK;
   5042 		sc->sc_wdcdev.irqack = pciide_irqack;
   5043 	}
   5044 	sc->sc_wdcdev.PIO_cap = 4;
   5045 	sc->sc_wdcdev.DMA_cap = 2;
   5046 	switch (sc->sc_pp->ide_product) {
   5047 	case PCI_PRODUCT_SERVERWORKS_OSB4_IDE:
   5048 		sc->sc_wdcdev.UDMA_cap = 2;
   5049 		break;
   5050 	case PCI_PRODUCT_SERVERWORKS_CSB5_IDE:
   5051 		if (PCI_REVISION(pa->pa_class) < 0x92)
   5052 			sc->sc_wdcdev.UDMA_cap = 4;
   5053 		else
   5054 			sc->sc_wdcdev.UDMA_cap = 5;
   5055 		break;
   5056 	case PCI_PRODUCT_SERVERWORKS_CSB6_IDE:
   5057 		sc->sc_wdcdev.UDMA_cap = 5;
   5058 		break;
   5059 	}
   5060 
   5061 	sc->sc_wdcdev.set_modes = serverworks_setup_channel;
   5062 	sc->sc_wdcdev.channels = sc->wdc_chanarray;
   5063 	sc->sc_wdcdev.nchannels = 2;
   5064 
   5065 	for (channel = 0; channel < sc->sc_wdcdev.nchannels; channel++) {
   5066 		cp = &sc->pciide_channels[channel];
   5067 		if (pciide_chansetup(sc, channel, interface) == 0)
   5068 			continue;
   5069 		pciide_mapchan(pa, cp, interface, &cmdsize, &ctlsize,
   5070 		    serverworks_pci_intr);
   5071 		if (cp->hw_ok == 0)
   5072 			return;
   5073 		pciide_map_compat_intr(pa, cp, channel, interface);
   5074 		if (cp->hw_ok == 0)
   5075 			return;
   5076 		serverworks_setup_channel(&cp->wdc_channel);
   5077 	}
   5078 
   5079 	pcib_tag = pci_make_tag(pa->pa_pc, pa->pa_bus, pa->pa_device, 0);
   5080 	pci_conf_write(pa->pa_pc, pcib_tag, 0x64,
   5081 	    (pci_conf_read(pa->pa_pc, pcib_tag, 0x64) & ~0x2000) | 0x4000);
   5082 }
   5083 
   5084 void
   5085 serverworks_setup_channel(chp)
   5086 	struct channel_softc *chp;
   5087 {
   5088 	struct ata_drive_datas *drvp;
   5089 	struct pciide_channel *cp = (struct pciide_channel*)chp;
   5090 	struct pciide_softc *sc = (struct pciide_softc *)cp->wdc_channel.wdc;
   5091 	int channel = chp->channel;
   5092 	int drive, unit;
   5093 	u_int32_t pio_time, dma_time, pio_mode, udma_mode;
   5094 	u_int32_t idedma_ctl;
   5095 	static const u_int8_t pio_modes[5] = {0x5d, 0x47, 0x34, 0x22, 0x20};
   5096 	static const u_int8_t dma_modes[3] = {0x77, 0x21, 0x20};
   5097 
   5098 	/* setup DMA if needed */
   5099 	pciide_channel_dma_setup(cp);
   5100 
   5101 	pio_time = pci_conf_read(sc->sc_pc, sc->sc_tag, 0x40);
   5102 	dma_time = pci_conf_read(sc->sc_pc, sc->sc_tag, 0x44);
   5103 	pio_mode = pci_conf_read(sc->sc_pc, sc->sc_tag, 0x48);
   5104 	udma_mode = pci_conf_read(sc->sc_pc, sc->sc_tag, 0x54);
   5105 
   5106 	pio_time &= ~(0xffff << (16 * channel));
   5107 	dma_time &= ~(0xffff << (16 * channel));
   5108 	pio_mode &= ~(0xff << (8 * channel + 16));
   5109 	udma_mode &= ~(0xff << (8 * channel + 16));
   5110 	udma_mode &= ~(3 << (2 * channel));
   5111 
   5112 	idedma_ctl = 0;
   5113 
   5114 	/* Per drive settings */
   5115 	for (drive = 0; drive < 2; drive++) {
   5116 		drvp = &chp->ch_drive[drive];
   5117 		/* If no drive, skip */
   5118 		if ((drvp->drive_flags & DRIVE) == 0)
   5119 			continue;
   5120 		unit = drive + 2 * channel;
   5121 		/* add timing values, setup DMA if needed */
   5122 		pio_time |= pio_modes[drvp->PIO_mode] << (8 * (unit^1));
   5123 		pio_mode |= drvp->PIO_mode << (4 * unit + 16);
   5124 		if ((chp->wdc->cap & WDC_CAPABILITY_UDMA) &&
   5125 		    (drvp->drive_flags & DRIVE_UDMA)) {
   5126 			/* use Ultra/DMA, check for 80-pin cable */
   5127 			if (drvp->UDMA_mode > 2 &&
   5128 			    (PCI_PRODUCT(pci_conf_read(sc->sc_pc, sc->sc_tag, PCI_SUBSYS_ID_REG)) & (1 << (14 + channel))) == 0)
   5129 				drvp->UDMA_mode = 2;
   5130 			dma_time |= dma_modes[drvp->DMA_mode] << (8 * (unit^1));
   5131 			udma_mode |= drvp->UDMA_mode << (4 * unit + 16);
   5132 			udma_mode |= 1 << unit;
   5133 			idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
   5134 		} else if ((chp->wdc->cap & WDC_CAPABILITY_DMA) &&
   5135 		    (drvp->drive_flags & DRIVE_DMA)) {
   5136 			/* use Multiword DMA */
   5137 			drvp->drive_flags &= ~DRIVE_UDMA;
   5138 			dma_time |= dma_modes[drvp->DMA_mode] << (8 * (unit^1));
   5139 			idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
   5140 		} else {
   5141 			/* PIO only */
   5142 			drvp->drive_flags &= ~(DRIVE_UDMA | DRIVE_DMA);
   5143 		}
   5144 	}
   5145 
   5146 	pci_conf_write(sc->sc_pc, sc->sc_tag, 0x40, pio_time);
   5147 	pci_conf_write(sc->sc_pc, sc->sc_tag, 0x44, dma_time);
   5148 	if (sc->sc_pp->ide_product != PCI_PRODUCT_SERVERWORKS_OSB4_IDE)
   5149 		pci_conf_write(sc->sc_pc, sc->sc_tag, 0x48, pio_mode);
   5150 	pci_conf_write(sc->sc_pc, sc->sc_tag, 0x54, udma_mode);
   5151 
   5152 	if (idedma_ctl != 0) {
   5153 		/* Add software bits in status register */
   5154 		bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   5155 		    IDEDMA_CTL + IDEDMA_SCH_OFFSET * channel, idedma_ctl);
   5156 	}
   5157 	pciide_print_modes(cp);
   5158 }
   5159 
   5160 int
   5161 serverworks_pci_intr(arg)
   5162 	void *arg;
   5163 {
   5164 	struct pciide_softc *sc = arg;
   5165 	struct pciide_channel *cp;
   5166 	struct channel_softc *wdc_cp;
   5167 	int rv = 0;
   5168 	int dmastat, i, crv;
   5169 
   5170 	for (i = 0; i < sc->sc_wdcdev.nchannels; i++) {
   5171 		dmastat = bus_space_read_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   5172 		    IDEDMA_CTL + IDEDMA_SCH_OFFSET * i);
   5173 		if ((dmastat & (IDEDMA_CTL_ACT | IDEDMA_CTL_INTR)) !=
   5174 		    IDEDMA_CTL_INTR)
   5175 			continue;
   5176 		cp = &sc->pciide_channels[i];
   5177 		wdc_cp = &cp->wdc_channel;
   5178 		crv = wdcintr(wdc_cp);
   5179 		if (crv == 0) {
   5180 			printf("%s:%d: bogus intr\n",
   5181 			    sc->sc_wdcdev.sc_dev.dv_xname, i);
   5182 			bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   5183 			    IDEDMA_CTL + IDEDMA_SCH_OFFSET * i, dmastat);
   5184 		} else
   5185 			rv = 1;
   5186 	}
   5187 	return rv;
   5188 }
   5189