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pciide.c revision 1.186
      1 /*	$NetBSD: pciide.c,v 1.186 2003/03/19 15:13:57 thorpej 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 1.186 2003/03/19 15:13:57 thorpej 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/pciide_i31244_reg.h>
    123 #include <dev/pci/cy82c693var.h>
    124 
    125 #include "opt_pciide.h"
    126 
    127 /* inlines for reading/writing 8-bit PCI registers */
    128 static __inline u_int8_t pciide_pci_read __P((pci_chipset_tag_t, pcitag_t,
    129 					      int));
    130 static __inline void pciide_pci_write __P((pci_chipset_tag_t, pcitag_t,
    131 					   int, u_int8_t));
    132 
    133 static __inline u_int8_t
    134 pciide_pci_read(pc, pa, reg)
    135 	pci_chipset_tag_t pc;
    136 	pcitag_t pa;
    137 	int reg;
    138 {
    139 
    140 	return (pci_conf_read(pc, pa, (reg & ~0x03)) >>
    141 	    ((reg & 0x03) * 8) & 0xff);
    142 }
    143 
    144 static __inline void
    145 pciide_pci_write(pc, pa, reg, val)
    146 	pci_chipset_tag_t pc;
    147 	pcitag_t pa;
    148 	int reg;
    149 	u_int8_t val;
    150 {
    151 	pcireg_t pcival;
    152 
    153 	pcival = pci_conf_read(pc, pa, (reg & ~0x03));
    154 	pcival &= ~(0xff << ((reg & 0x03) * 8));
    155 	pcival |= (val << ((reg & 0x03) * 8));
    156 	pci_conf_write(pc, pa, (reg & ~0x03), pcival);
    157 }
    158 
    159 void default_chip_map __P((struct pciide_softc*, struct pci_attach_args*));
    160 
    161 void sata_setup_channel __P((struct channel_softc*));
    162 
    163 void piix_chip_map __P((struct pciide_softc*, struct pci_attach_args*));
    164 void piix_setup_channel __P((struct channel_softc*));
    165 void piix3_4_setup_channel __P((struct channel_softc*));
    166 static u_int32_t piix_setup_idetim_timings __P((u_int8_t, u_int8_t, u_int8_t));
    167 static u_int32_t piix_setup_idetim_drvs __P((struct ata_drive_datas*));
    168 static u_int32_t piix_setup_sidetim_timings __P((u_int8_t, u_int8_t, u_int8_t));
    169 
    170 void amd7x6_chip_map __P((struct pciide_softc*, struct pci_attach_args*));
    171 void amd7x6_setup_channel __P((struct channel_softc*));
    172 
    173 void apollo_chip_map __P((struct pciide_softc*, struct pci_attach_args*));
    174 void apollo_setup_channel __P((struct channel_softc*));
    175 
    176 void cmd_chip_map __P((struct pciide_softc*, struct pci_attach_args*));
    177 void cmd0643_9_chip_map __P((struct pciide_softc*, struct pci_attach_args*));
    178 void cmd0643_9_setup_channel __P((struct channel_softc*));
    179 void cmd_channel_map __P((struct pci_attach_args *,
    180 			struct pciide_softc *, int));
    181 int  cmd_pci_intr __P((void *));
    182 void cmd646_9_irqack __P((struct channel_softc *));
    183 void cmd680_chip_map __P((struct pciide_softc*, struct pci_attach_args*));
    184 void cmd680_setup_channel __P((struct channel_softc*));
    185 void cmd680_channel_map __P((struct pci_attach_args *,
    186 			struct pciide_softc *, int));
    187 
    188 void cy693_chip_map __P((struct pciide_softc*, struct pci_attach_args*));
    189 void cy693_setup_channel __P((struct channel_softc*));
    190 
    191 void sis_chip_map __P((struct pciide_softc*, struct pci_attach_args*));
    192 void sis_setup_channel __P((struct channel_softc*));
    193 void sis96x_setup_channel __P((struct channel_softc*));
    194 static int sis_hostbr_match __P(( struct pci_attach_args *));
    195 static int sis_south_match __P(( struct pci_attach_args *));
    196 
    197 void acer_chip_map __P((struct pciide_softc*, struct pci_attach_args*));
    198 void acer_setup_channel __P((struct channel_softc*));
    199 int  acer_pci_intr __P((void *));
    200 
    201 void pdc202xx_chip_map __P((struct pciide_softc*, struct pci_attach_args*));
    202 void pdc202xx_setup_channel __P((struct channel_softc*));
    203 void pdc20268_setup_channel __P((struct channel_softc*));
    204 int  pdc202xx_pci_intr __P((void *));
    205 int  pdc20265_pci_intr __P((void *));
    206 
    207 void opti_chip_map __P((struct pciide_softc*, struct pci_attach_args*));
    208 void opti_setup_channel __P((struct channel_softc*));
    209 
    210 void hpt_chip_map __P((struct pciide_softc*, struct pci_attach_args*));
    211 void hpt_setup_channel __P((struct channel_softc*));
    212 int  hpt_pci_intr __P((void *));
    213 
    214 void acard_chip_map __P((struct pciide_softc*, struct pci_attach_args*));
    215 void acard_setup_channel __P((struct channel_softc*));
    216 int  acard_pci_intr __P((void *));
    217 
    218 void serverworks_chip_map __P((struct pciide_softc*, struct pci_attach_args*));
    219 void serverworks_setup_channel __P((struct channel_softc*));
    220 int  serverworks_pci_intr __P((void *));
    221 
    222 void sl82c105_chip_map __P((struct pciide_softc*, struct pci_attach_args*));
    223 void sl82c105_setup_channel __P((struct channel_softc*));
    224 
    225 void pciide_channel_dma_setup __P((struct pciide_channel *));
    226 int  pciide_dma_table_setup __P((struct pciide_softc*, int, int));
    227 int  pciide_dma_init __P((void*, int, int, void *, size_t, int));
    228 void pciide_dma_start __P((void*, int, int));
    229 int  pciide_dma_finish __P((void*, int, int, int));
    230 void pciide_irqack __P((struct channel_softc *));
    231 void pciide_print_modes __P((struct pciide_channel *));
    232 
    233 void artisea_chip_map __P((struct pciide_softc*, struct pci_attach_args *));
    234 
    235 struct pciide_product_desc {
    236 	u_int32_t ide_product;
    237 	int ide_flags;
    238 	const char *ide_name;
    239 	/* map and setup chip, probe drives */
    240 	void (*chip_map) __P((struct pciide_softc*, struct pci_attach_args*));
    241 };
    242 
    243 /* Flags for ide_flags */
    244 #define IDE_PCI_CLASS_OVERRIDE	0x0001 /* accept even if class != pciide */
    245 #define	IDE_16BIT_IOSPACE	0x0002 /* I/O space BARS ignore upper word */
    246 
    247 /* Default product description for devices not known from this controller */
    248 const struct pciide_product_desc default_product_desc = {
    249 	0,
    250 	0,
    251 	"Generic PCI IDE controller",
    252 	default_chip_map,
    253 };
    254 
    255 const struct pciide_product_desc pciide_intel_products[] =  {
    256 	{ PCI_PRODUCT_INTEL_82092AA,
    257 	  0,
    258 	  "Intel 82092AA IDE controller",
    259 	  default_chip_map,
    260 	},
    261 	{ PCI_PRODUCT_INTEL_82371FB_IDE,
    262 	  0,
    263 	  "Intel 82371FB IDE controller (PIIX)",
    264 	  piix_chip_map,
    265 	},
    266 	{ PCI_PRODUCT_INTEL_82371SB_IDE,
    267 	  0,
    268 	  "Intel 82371SB IDE Interface (PIIX3)",
    269 	  piix_chip_map,
    270 	},
    271 	{ PCI_PRODUCT_INTEL_82371AB_IDE,
    272 	  0,
    273 	  "Intel 82371AB IDE controller (PIIX4)",
    274 	  piix_chip_map,
    275 	},
    276 	{ PCI_PRODUCT_INTEL_82440MX_IDE,
    277 	  0,
    278 	  "Intel 82440MX IDE controller",
    279 	  piix_chip_map
    280 	},
    281 	{ PCI_PRODUCT_INTEL_82801AA_IDE,
    282 	  0,
    283 	  "Intel 82801AA IDE Controller (ICH)",
    284 	  piix_chip_map,
    285 	},
    286 	{ PCI_PRODUCT_INTEL_82801AB_IDE,
    287 	  0,
    288 	  "Intel 82801AB IDE Controller (ICH0)",
    289 	  piix_chip_map,
    290 	},
    291 	{ PCI_PRODUCT_INTEL_82801BA_IDE,
    292 	  0,
    293 	  "Intel 82801BA IDE Controller (ICH2)",
    294 	  piix_chip_map,
    295 	},
    296 	{ PCI_PRODUCT_INTEL_82801BAM_IDE,
    297 	  0,
    298 	  "Intel 82801BAM IDE Controller (ICH2)",
    299 	  piix_chip_map,
    300 	},
    301 	{ PCI_PRODUCT_INTEL_82801CA_IDE_1,
    302 	  0,
    303 	  "Intel 82801CA IDE Controller",
    304 	  piix_chip_map,
    305 	},
    306 	{ PCI_PRODUCT_INTEL_82801CA_IDE_2,
    307 	  0,
    308 	  "Intel 82801CA IDE Controller",
    309 	  piix_chip_map,
    310 	},
    311 	{ PCI_PRODUCT_INTEL_82801DB_IDE,
    312 	  0,
    313 	  "Intel 82801DB IDE Controller (ICH4)",
    314 	  piix_chip_map,
    315 	},
    316 	{ PCI_PRODUCT_INTEL_31244,
    317 	  0,
    318 	  "Intel 31244 Serial ATA Controller",
    319 	  artisea_chip_map,
    320 	},
    321 	{ 0,
    322 	  0,
    323 	  NULL,
    324 	  NULL
    325 	}
    326 };
    327 
    328 const struct pciide_product_desc pciide_amd_products[] =  {
    329 	{ PCI_PRODUCT_AMD_PBC756_IDE,
    330 	  0,
    331 	  "Advanced Micro Devices AMD756 IDE Controller",
    332 	  amd7x6_chip_map
    333 	},
    334 	{ PCI_PRODUCT_AMD_PBC766_IDE,
    335 	  0,
    336 	  "Advanced Micro Devices AMD766 IDE Controller",
    337 	  amd7x6_chip_map
    338 	},
    339 	{ PCI_PRODUCT_AMD_PBC768_IDE,
    340 	  0,
    341 	  "Advanced Micro Devices AMD768 IDE Controller",
    342 	  amd7x6_chip_map
    343 	},
    344 	{ PCI_PRODUCT_AMD_PBC8111_IDE,
    345 	  0,
    346 	  "Advanced Micro Devices AMD8111 IDE Controller",
    347 	  amd7x6_chip_map
    348 	},
    349 	{ 0,
    350 	  0,
    351 	  NULL,
    352 	  NULL
    353 	}
    354 };
    355 
    356 const struct pciide_product_desc pciide_nvidia_products[] = {
    357 	{ PCI_PRODUCT_NVIDIA_NFORCE_ATA100,
    358 	  0,
    359 	  "NVIDIA nForce IDE Controller",
    360 	  amd7x6_chip_map
    361 	},
    362 	{ PCI_PRODUCT_NVIDIA_NFORCE2_ATA133,
    363 	  0,
    364 	  "NVIDIA nForce2 IDE Controller",
    365 	  amd7x6_chip_map
    366 	},
    367 	{ 0,
    368 	  0,
    369 	  NULL,
    370 	  NULL
    371 	}
    372 };
    373 
    374 const struct pciide_product_desc pciide_cmd_products[] =  {
    375 	{ PCI_PRODUCT_CMDTECH_640,
    376 	  0,
    377 	  "CMD Technology PCI0640",
    378 	  cmd_chip_map
    379 	},
    380 	{ PCI_PRODUCT_CMDTECH_643,
    381 	  0,
    382 	  "CMD Technology PCI0643",
    383 	  cmd0643_9_chip_map,
    384 	},
    385 	{ PCI_PRODUCT_CMDTECH_646,
    386 	  0,
    387 	  "CMD Technology PCI0646",
    388 	  cmd0643_9_chip_map,
    389 	},
    390 	{ PCI_PRODUCT_CMDTECH_648,
    391 	  IDE_PCI_CLASS_OVERRIDE,
    392 	  "CMD Technology PCI0648",
    393 	  cmd0643_9_chip_map,
    394 	},
    395 	{ PCI_PRODUCT_CMDTECH_649,
    396 	  IDE_PCI_CLASS_OVERRIDE,
    397 	  "CMD Technology PCI0649",
    398 	  cmd0643_9_chip_map,
    399 	},
    400 	{ PCI_PRODUCT_CMDTECH_680,
    401 	  IDE_PCI_CLASS_OVERRIDE,
    402 	  "Silicon Image 0680",
    403 	  cmd680_chip_map,
    404 	},
    405 	{ 0,
    406 	  0,
    407 	  NULL,
    408 	  NULL
    409 	}
    410 };
    411 
    412 const struct pciide_product_desc pciide_via_products[] =  {
    413 	{ PCI_PRODUCT_VIATECH_VT82C586_IDE,
    414 	  0,
    415 	  NULL,
    416 	  apollo_chip_map,
    417 	 },
    418 	{ PCI_PRODUCT_VIATECH_VT82C586A_IDE,
    419 	  0,
    420 	  NULL,
    421 	  apollo_chip_map,
    422 	},
    423 	{ 0,
    424 	  0,
    425 	  NULL,
    426 	  NULL
    427 	}
    428 };
    429 
    430 const struct pciide_product_desc pciide_cypress_products[] =  {
    431 	{ PCI_PRODUCT_CONTAQ_82C693,
    432 	  IDE_16BIT_IOSPACE,
    433 	  "Cypress 82C693 IDE Controller",
    434 	  cy693_chip_map,
    435 	},
    436 	{ 0,
    437 	  0,
    438 	  NULL,
    439 	  NULL
    440 	}
    441 };
    442 
    443 const struct pciide_product_desc pciide_sis_products[] =  {
    444 	{ PCI_PRODUCT_SIS_5597_IDE,
    445 	  0,
    446 	  NULL,
    447 	  sis_chip_map,
    448 	},
    449 	{ 0,
    450 	  0,
    451 	  NULL,
    452 	  NULL
    453 	}
    454 };
    455 
    456 const struct pciide_product_desc pciide_acer_products[] =  {
    457 	{ PCI_PRODUCT_ALI_M5229,
    458 	  0,
    459 	  "Acer Labs M5229 UDMA IDE Controller",
    460 	  acer_chip_map,
    461 	},
    462 	{ 0,
    463 	  0,
    464 	  NULL,
    465 	  NULL
    466 	}
    467 };
    468 
    469 const struct pciide_product_desc pciide_promise_products[] =  {
    470 	{ PCI_PRODUCT_PROMISE_ULTRA33,
    471 	  IDE_PCI_CLASS_OVERRIDE,
    472 	  "Promise Ultra33/ATA Bus Master IDE Accelerator",
    473 	  pdc202xx_chip_map,
    474 	},
    475 	{ PCI_PRODUCT_PROMISE_ULTRA66,
    476 	  IDE_PCI_CLASS_OVERRIDE,
    477 	  "Promise Ultra66/ATA Bus Master IDE Accelerator",
    478 	  pdc202xx_chip_map,
    479 	},
    480 	{ PCI_PRODUCT_PROMISE_ULTRA100,
    481 	  IDE_PCI_CLASS_OVERRIDE,
    482 	  "Promise Ultra100/ATA Bus Master IDE Accelerator",
    483 	  pdc202xx_chip_map,
    484 	},
    485 	{ PCI_PRODUCT_PROMISE_ULTRA100X,
    486 	  IDE_PCI_CLASS_OVERRIDE,
    487 	  "Promise Ultra100/ATA Bus Master IDE Accelerator",
    488 	  pdc202xx_chip_map,
    489 	},
    490 	{ PCI_PRODUCT_PROMISE_ULTRA100TX2,
    491 	  IDE_PCI_CLASS_OVERRIDE,
    492 	  "Promise Ultra100TX2/ATA Bus Master IDE Accelerator",
    493 	  pdc202xx_chip_map,
    494 	},
    495 	{ PCI_PRODUCT_PROMISE_ULTRA100TX2v2,
    496 	  IDE_PCI_CLASS_OVERRIDE,
    497 	  "Promise Ultra100TX2v2/ATA Bus Master IDE Accelerator",
    498 	  pdc202xx_chip_map,
    499 	},
    500 	{ PCI_PRODUCT_PROMISE_ULTRA133,
    501 	  IDE_PCI_CLASS_OVERRIDE,
    502 	  "Promise Ultra133/ATA Bus Master IDE Accelerator",
    503 	  pdc202xx_chip_map,
    504 	},
    505 	{ PCI_PRODUCT_PROMISE_ULTRA133TX2,
    506 	  IDE_PCI_CLASS_OVERRIDE,
    507 	  "Promise Ultra133TX2/ATA Bus Master IDE Accelerator",
    508 	  pdc202xx_chip_map,
    509 	},
    510 	{ PCI_PRODUCT_PROMISE_MBULTRA133,
    511 	  IDE_PCI_CLASS_OVERRIDE,
    512 	  "Promise Ultra133/ATA Bus Master IDE Accelerator (MB)",
    513 	  pdc202xx_chip_map,
    514 	},
    515 	{ PCI_PRODUCT_PROMISE_ULTRA133TX2v2,
    516 	  IDE_PCI_CLASS_OVERRIDE,
    517 	  "Promise Ultra133TX2v2/ATA Bus Master IDE Accelerator",
    518 	  pdc202xx_chip_map,
    519 	},
    520 	{ PCI_PRODUCT_PROMISE_FASTTRAK133LITE,
    521 	  IDE_PCI_CLASS_OVERRIDE,
    522 	  "Promise Fasttrak133 Lite Bus Master IDE Accelerator",
    523 	  pdc202xx_chip_map,
    524 	},
    525 	{ PCI_PRODUCT_PROMISE_SATA150TX2PLUS,
    526 	  IDE_PCI_CLASS_OVERRIDE,
    527 	  "Promise Serial ATA/150 TX2plus Bus Master IDE Accelerator",
    528 	  pdc202xx_chip_map,
    529 	},
    530 	{ 0,
    531 	  0,
    532 	  NULL,
    533 	  NULL
    534 	}
    535 };
    536 
    537 const struct pciide_product_desc pciide_opti_products[] =  {
    538 	{ PCI_PRODUCT_OPTI_82C621,
    539 	  0,
    540 	  "OPTi 82c621 PCI IDE controller",
    541 	  opti_chip_map,
    542 	},
    543 	{ PCI_PRODUCT_OPTI_82C568,
    544 	  0,
    545 	  "OPTi 82c568 (82c621 compatible) PCI IDE controller",
    546 	  opti_chip_map,
    547 	},
    548 	{ PCI_PRODUCT_OPTI_82D568,
    549 	  0,
    550 	  "OPTi 82d568 (82c621 compatible) PCI IDE controller",
    551 	  opti_chip_map,
    552 	},
    553 	{ 0,
    554 	  0,
    555 	  NULL,
    556 	  NULL
    557 	}
    558 };
    559 
    560 const struct pciide_product_desc pciide_triones_products[] =  {
    561 	{ PCI_PRODUCT_TRIONES_HPT366,
    562 	  IDE_PCI_CLASS_OVERRIDE,
    563 	  NULL,
    564 	  hpt_chip_map,
    565 	},
    566 	{ PCI_PRODUCT_TRIONES_HPT372,
    567 	  IDE_PCI_CLASS_OVERRIDE,
    568 	  NULL,
    569 	  hpt_chip_map
    570 	},
    571 	{ PCI_PRODUCT_TRIONES_HPT374,
    572 	  IDE_PCI_CLASS_OVERRIDE,
    573 	  NULL,
    574 	  hpt_chip_map
    575 	},
    576 	{ 0,
    577 	  0,
    578 	  NULL,
    579 	  NULL
    580 	}
    581 };
    582 
    583 const struct pciide_product_desc pciide_acard_products[] =  {
    584 	{ PCI_PRODUCT_ACARD_ATP850U,
    585 	  IDE_PCI_CLASS_OVERRIDE,
    586 	  "Acard ATP850U Ultra33 IDE Controller",
    587 	  acard_chip_map,
    588 	},
    589 	{ PCI_PRODUCT_ACARD_ATP860,
    590 	  IDE_PCI_CLASS_OVERRIDE,
    591 	  "Acard ATP860 Ultra66 IDE Controller",
    592 	  acard_chip_map,
    593 	},
    594 	{ PCI_PRODUCT_ACARD_ATP860A,
    595 	  IDE_PCI_CLASS_OVERRIDE,
    596 	  "Acard ATP860-A Ultra66 IDE Controller",
    597 	  acard_chip_map,
    598 	},
    599 	{ 0,
    600 	  0,
    601 	  NULL,
    602 	  NULL
    603 	}
    604 };
    605 
    606 const struct pciide_product_desc pciide_serverworks_products[] =  {
    607 	{ PCI_PRODUCT_SERVERWORKS_OSB4_IDE,
    608 	  0,
    609 	  "ServerWorks OSB4 IDE Controller",
    610 	  serverworks_chip_map,
    611 	},
    612 	{ PCI_PRODUCT_SERVERWORKS_CSB5_IDE,
    613 	  0,
    614 	  "ServerWorks CSB5 IDE Controller",
    615 	  serverworks_chip_map,
    616 	},
    617 	{ PCI_PRODUCT_SERVERWORKS_CSB6_IDE,
    618 	  0,
    619 	  "ServerWorks CSB6 RAID/IDE Controller",
    620 	  serverworks_chip_map,
    621 	},
    622 	{ 0,
    623 	  0,
    624 	  NULL,
    625 	}
    626 };
    627 
    628 const struct pciide_product_desc pciide_symphony_products[] = {
    629 	{ PCI_PRODUCT_SYMPHONY_82C105,
    630 	  0,
    631 	  "Symphony Labs 82C105 IDE controller",
    632 	  sl82c105_chip_map,
    633 	},
    634 	{ 0,
    635 	  0,
    636 	  NULL,
    637 	}
    638 };
    639 
    640 const struct pciide_product_desc pciide_winbond_products[] =  {
    641 	{ PCI_PRODUCT_WINBOND_W83C553F_1,
    642 	  0,
    643 	  "Winbond W83C553F IDE controller",
    644 	  sl82c105_chip_map,
    645 	},
    646 	{ 0,
    647 	  0,
    648 	  NULL,
    649 	}
    650 };
    651 
    652 struct pciide_vendor_desc {
    653 	u_int32_t ide_vendor;
    654 	const struct pciide_product_desc *ide_products;
    655 };
    656 
    657 const struct pciide_vendor_desc pciide_vendors[] = {
    658 	{ PCI_VENDOR_INTEL, pciide_intel_products },
    659 	{ PCI_VENDOR_CMDTECH, pciide_cmd_products },
    660 	{ PCI_VENDOR_VIATECH, pciide_via_products },
    661 	{ PCI_VENDOR_CONTAQ, pciide_cypress_products },
    662 	{ PCI_VENDOR_SIS, pciide_sis_products },
    663 	{ PCI_VENDOR_ALI, pciide_acer_products },
    664 	{ PCI_VENDOR_PROMISE, pciide_promise_products },
    665 	{ PCI_VENDOR_AMD, pciide_amd_products },
    666 	{ PCI_VENDOR_OPTI, pciide_opti_products },
    667 	{ PCI_VENDOR_TRIONES, pciide_triones_products },
    668 	{ PCI_VENDOR_ACARD, pciide_acard_products },
    669 	{ PCI_VENDOR_SERVERWORKS, pciide_serverworks_products },
    670 	{ PCI_VENDOR_SYMPHONY, pciide_symphony_products },
    671 	{ PCI_VENDOR_WINBOND, pciide_winbond_products },
    672 	{ PCI_VENDOR_NVIDIA, pciide_nvidia_products },
    673 	{ 0, NULL }
    674 };
    675 
    676 /* options passed via the 'flags' config keyword */
    677 #define	PCIIDE_OPTIONS_DMA	0x01
    678 #define	PCIIDE_OPTIONS_NODMA	0x02
    679 
    680 int	pciide_match __P((struct device *, struct cfdata *, void *));
    681 void	pciide_attach __P((struct device *, struct device *, void *));
    682 
    683 CFATTACH_DECL(pciide, sizeof(struct pciide_softc),
    684     pciide_match, pciide_attach, NULL, NULL);
    685 
    686 int	pciide_chipen __P((struct pciide_softc *, struct pci_attach_args *));
    687 int	pciide_mapregs_compat __P(( struct pci_attach_args *,
    688 	    struct pciide_channel *, int, bus_size_t *, bus_size_t*));
    689 int	pciide_mapregs_native __P((struct pci_attach_args *,
    690 	    struct pciide_channel *, bus_size_t *, bus_size_t *,
    691 	    int (*pci_intr) __P((void *))));
    692 void	pciide_mapreg_dma __P((struct pciide_softc *,
    693 	    struct pci_attach_args *));
    694 int	pciide_chansetup __P((struct pciide_softc *, int, pcireg_t));
    695 void	pciide_mapchan __P((struct pci_attach_args *,
    696 	    struct pciide_channel *, pcireg_t, bus_size_t *, bus_size_t *,
    697 	    int (*pci_intr) __P((void *))));
    698 int	pciide_chan_candisable __P((struct pciide_channel *));
    699 void	pciide_map_compat_intr __P(( struct pci_attach_args *,
    700 	    struct pciide_channel *, int, int));
    701 int	pciide_compat_intr __P((void *));
    702 int	pciide_pci_intr __P((void *));
    703 const struct pciide_product_desc* pciide_lookup_product __P((u_int32_t));
    704 
    705 const struct pciide_product_desc *
    706 pciide_lookup_product(id)
    707 	u_int32_t id;
    708 {
    709 	const struct pciide_product_desc *pp;
    710 	const struct pciide_vendor_desc *vp;
    711 
    712 	for (vp = pciide_vendors; vp->ide_products != NULL; vp++)
    713 		if (PCI_VENDOR(id) == vp->ide_vendor)
    714 			break;
    715 
    716 	if ((pp = vp->ide_products) == NULL)
    717 		return NULL;
    718 
    719 	for (; pp->chip_map != NULL; pp++)
    720 		if (PCI_PRODUCT(id) == pp->ide_product)
    721 			break;
    722 
    723 	if (pp->chip_map == NULL)
    724 		return NULL;
    725 	return pp;
    726 }
    727 
    728 int
    729 pciide_match(parent, match, aux)
    730 	struct device *parent;
    731 	struct cfdata *match;
    732 	void *aux;
    733 {
    734 	struct pci_attach_args *pa = aux;
    735 	const struct pciide_product_desc *pp;
    736 
    737 	/*
    738 	 * Check the ID register to see that it's a PCI IDE controller.
    739 	 * If it is, we assume that we can deal with it; it _should_
    740 	 * work in a standardized way...
    741 	 */
    742 	if (PCI_CLASS(pa->pa_class) == PCI_CLASS_MASS_STORAGE &&
    743 	    PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_MASS_STORAGE_IDE) {
    744 		return (1);
    745 	}
    746 
    747 	/*
    748 	 * Some controllers (e.g. promise Utra-33) don't claim to be PCI IDE
    749 	 * controllers. Let see if we can deal with it anyway.
    750 	 */
    751 	pp = pciide_lookup_product(pa->pa_id);
    752 	if (pp != NULL && (pp->ide_flags & IDE_PCI_CLASS_OVERRIDE)) {
    753 		return (1);
    754 	}
    755 
    756 	return (0);
    757 }
    758 
    759 void
    760 pciide_attach(parent, self, aux)
    761 	struct device *parent, *self;
    762 	void *aux;
    763 {
    764 	struct pci_attach_args *pa = aux;
    765 	pci_chipset_tag_t pc = pa->pa_pc;
    766 	pcitag_t tag = pa->pa_tag;
    767 	struct pciide_softc *sc = (struct pciide_softc *)self;
    768 	pcireg_t csr;
    769 	char devinfo[256];
    770 	const char *displaydev;
    771 
    772 	sc->sc_pci_vendor = PCI_VENDOR(pa->pa_id);
    773 	sc->sc_pp = pciide_lookup_product(pa->pa_id);
    774 	if (sc->sc_pp == NULL) {
    775 		sc->sc_pp = &default_product_desc;
    776 		pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo);
    777 		displaydev = devinfo;
    778 	} else
    779 		displaydev = sc->sc_pp->ide_name;
    780 
    781 	/* if displaydev == NULL, printf is done in chip-specific map */
    782 	if (displaydev)
    783 		printf(": %s (rev. 0x%02x)\n", displaydev,
    784 		    PCI_REVISION(pa->pa_class));
    785 
    786 	sc->sc_pc = pa->pa_pc;
    787 	sc->sc_tag = pa->pa_tag;
    788 #ifdef WDCDEBUG
    789 	if (wdcdebug_pciide_mask & DEBUG_PROBE)
    790 		pci_conf_print(sc->sc_pc, sc->sc_tag, NULL);
    791 #endif
    792 	sc->sc_pp->chip_map(sc, pa);
    793 
    794 	if (sc->sc_dma_ok) {
    795 		csr = pci_conf_read(pc, tag, PCI_COMMAND_STATUS_REG);
    796 		csr |= PCI_COMMAND_MASTER_ENABLE;
    797 		pci_conf_write(pc, tag, PCI_COMMAND_STATUS_REG, csr);
    798 	}
    799 	WDCDEBUG_PRINT(("pciide: command/status register=%x\n",
    800 	    pci_conf_read(pc, tag, PCI_COMMAND_STATUS_REG)), DEBUG_PROBE);
    801 }
    802 
    803 /* tell whether the chip is enabled or not */
    804 int
    805 pciide_chipen(sc, pa)
    806 	struct pciide_softc *sc;
    807 	struct pci_attach_args *pa;
    808 {
    809 	pcireg_t csr;
    810 	if ((pa->pa_flags & PCI_FLAGS_IO_ENABLED) == 0) {
    811 		csr = pci_conf_read(sc->sc_pc, sc->sc_tag,
    812 		    PCI_COMMAND_STATUS_REG);
    813 		printf("%s: device disabled (at %s)\n",
    814 	 	   sc->sc_wdcdev.sc_dev.dv_xname,
    815 	  	  (csr & PCI_COMMAND_IO_ENABLE) == 0 ?
    816 		  "device" : "bridge");
    817 		return 0;
    818 	}
    819 	return 1;
    820 }
    821 
    822 int
    823 pciide_mapregs_compat(pa, cp, compatchan, cmdsizep, ctlsizep)
    824 	struct pci_attach_args *pa;
    825 	struct pciide_channel *cp;
    826 	int compatchan;
    827 	bus_size_t *cmdsizep, *ctlsizep;
    828 {
    829 	struct pciide_softc *sc = (struct pciide_softc *)cp->wdc_channel.wdc;
    830 	struct channel_softc *wdc_cp = &cp->wdc_channel;
    831 
    832 	cp->compat = 1;
    833 	*cmdsizep = PCIIDE_COMPAT_CMD_SIZE;
    834 	*ctlsizep = PCIIDE_COMPAT_CTL_SIZE;
    835 
    836 	wdc_cp->cmd_iot = pa->pa_iot;
    837 	if (bus_space_map(wdc_cp->cmd_iot, PCIIDE_COMPAT_CMD_BASE(compatchan),
    838 	    PCIIDE_COMPAT_CMD_SIZE, 0, &wdc_cp->cmd_ioh) != 0) {
    839 		printf("%s: couldn't map %s channel cmd regs\n",
    840 		    sc->sc_wdcdev.sc_dev.dv_xname, cp->name);
    841 		return (0);
    842 	}
    843 
    844 	wdc_cp->ctl_iot = pa->pa_iot;
    845 	if (bus_space_map(wdc_cp->ctl_iot, PCIIDE_COMPAT_CTL_BASE(compatchan),
    846 	    PCIIDE_COMPAT_CTL_SIZE, 0, &wdc_cp->ctl_ioh) != 0) {
    847 		printf("%s: couldn't map %s channel ctl regs\n",
    848 		    sc->sc_wdcdev.sc_dev.dv_xname, cp->name);
    849 		bus_space_unmap(wdc_cp->cmd_iot, wdc_cp->cmd_ioh,
    850 		    PCIIDE_COMPAT_CMD_SIZE);
    851 		return (0);
    852 	}
    853 
    854 	return (1);
    855 }
    856 
    857 int
    858 pciide_mapregs_native(pa, cp, cmdsizep, ctlsizep, pci_intr)
    859 	struct pci_attach_args * pa;
    860 	struct pciide_channel *cp;
    861 	bus_size_t *cmdsizep, *ctlsizep;
    862 	int (*pci_intr) __P((void *));
    863 {
    864 	struct pciide_softc *sc = (struct pciide_softc *)cp->wdc_channel.wdc;
    865 	struct channel_softc *wdc_cp = &cp->wdc_channel;
    866 	const char *intrstr;
    867 	pci_intr_handle_t intrhandle;
    868 
    869 	cp->compat = 0;
    870 
    871 	if (sc->sc_pci_ih == NULL) {
    872 		if (pci_intr_map(pa, &intrhandle) != 0) {
    873 			printf("%s: couldn't map native-PCI interrupt\n",
    874 			    sc->sc_wdcdev.sc_dev.dv_xname);
    875 			return 0;
    876 		}
    877 		intrstr = pci_intr_string(pa->pa_pc, intrhandle);
    878 		sc->sc_pci_ih = pci_intr_establish(pa->pa_pc,
    879 		    intrhandle, IPL_BIO, pci_intr, sc);
    880 		if (sc->sc_pci_ih != NULL) {
    881 			printf("%s: using %s for native-PCI interrupt\n",
    882 			    sc->sc_wdcdev.sc_dev.dv_xname,
    883 			    intrstr ? intrstr : "unknown interrupt");
    884 		} else {
    885 			printf("%s: couldn't establish native-PCI interrupt",
    886 			    sc->sc_wdcdev.sc_dev.dv_xname);
    887 			if (intrstr != NULL)
    888 				printf(" at %s", intrstr);
    889 			printf("\n");
    890 			return 0;
    891 		}
    892 	}
    893 	cp->ih = sc->sc_pci_ih;
    894 	if (pci_mapreg_map(pa, PCIIDE_REG_CMD_BASE(wdc_cp->channel),
    895 	    PCI_MAPREG_TYPE_IO, 0,
    896 	    &wdc_cp->cmd_iot, &wdc_cp->cmd_ioh, NULL, cmdsizep) != 0) {
    897 		printf("%s: couldn't map %s channel cmd regs\n",
    898 		    sc->sc_wdcdev.sc_dev.dv_xname, cp->name);
    899 		return 0;
    900 	}
    901 
    902 	if (pci_mapreg_map(pa, PCIIDE_REG_CTL_BASE(wdc_cp->channel),
    903 	    PCI_MAPREG_TYPE_IO, 0,
    904 	    &wdc_cp->ctl_iot, &cp->ctl_baseioh, NULL, ctlsizep) != 0) {
    905 		printf("%s: couldn't map %s channel ctl regs\n",
    906 		    sc->sc_wdcdev.sc_dev.dv_xname, cp->name);
    907 		bus_space_unmap(wdc_cp->cmd_iot, wdc_cp->cmd_ioh, *cmdsizep);
    908 		return 0;
    909 	}
    910 	/*
    911 	 * In native mode, 4 bytes of I/O space are mapped for the control
    912 	 * register, the control register is at offset 2. Pass the generic
    913 	 * code a handle for only one byte at the right offset.
    914 	 */
    915 	if (bus_space_subregion(wdc_cp->ctl_iot, cp->ctl_baseioh, 2, 1,
    916 	    &wdc_cp->ctl_ioh) != 0) {
    917 		printf("%s: unable to subregion %s channel ctl regs\n",
    918 		    sc->sc_wdcdev.sc_dev.dv_xname, cp->name);
    919 		bus_space_unmap(wdc_cp->cmd_iot, wdc_cp->cmd_ioh, *cmdsizep);
    920 		bus_space_unmap(wdc_cp->cmd_iot, cp->ctl_baseioh, *ctlsizep);
    921 		return 0;
    922 	}
    923 	return (1);
    924 }
    925 
    926 void
    927 pciide_mapreg_dma(sc, pa)
    928 	struct pciide_softc *sc;
    929 	struct pci_attach_args *pa;
    930 {
    931 	pcireg_t maptype;
    932 	bus_addr_t addr;
    933 
    934 	/*
    935 	 * Map DMA registers
    936 	 *
    937 	 * Note that sc_dma_ok is the right variable to test to see if
    938 	 * DMA can be done.  If the interface doesn't support DMA,
    939 	 * sc_dma_ok will never be non-zero.  If the DMA regs couldn't
    940 	 * be mapped, it'll be zero.  I.e., sc_dma_ok will only be
    941 	 * non-zero if the interface supports DMA and the registers
    942 	 * could be mapped.
    943 	 *
    944 	 * XXX Note that despite the fact that the Bus Master IDE specs
    945 	 * XXX say that "The bus master IDE function uses 16 bytes of IO
    946 	 * XXX space," some controllers (at least the United
    947 	 * XXX Microelectronics UM8886BF) place it in memory space.
    948 	 */
    949 	maptype = pci_mapreg_type(pa->pa_pc, pa->pa_tag,
    950 	    PCIIDE_REG_BUS_MASTER_DMA);
    951 
    952 	switch (maptype) {
    953 	case PCI_MAPREG_TYPE_IO:
    954 		sc->sc_dma_ok = (pci_mapreg_info(pa->pa_pc, pa->pa_tag,
    955 		    PCIIDE_REG_BUS_MASTER_DMA, PCI_MAPREG_TYPE_IO,
    956 		    &addr, NULL, NULL) == 0);
    957 		if (sc->sc_dma_ok == 0) {
    958 			printf(", but unused (couldn't query registers)");
    959 			break;
    960 		}
    961 		if ((sc->sc_pp->ide_flags & IDE_16BIT_IOSPACE)
    962 		    && addr >= 0x10000) {
    963 			sc->sc_dma_ok = 0;
    964 			printf(", but unused (registers at unsafe address "
    965 			    "%#lx)", (unsigned long)addr);
    966 			break;
    967 		}
    968 		/* FALLTHROUGH */
    969 
    970 	case PCI_MAPREG_MEM_TYPE_32BIT:
    971 		sc->sc_dma_ok = (pci_mapreg_map(pa,
    972 		    PCIIDE_REG_BUS_MASTER_DMA, maptype, 0,
    973 		    &sc->sc_dma_iot, &sc->sc_dma_ioh, NULL, NULL) == 0);
    974 		sc->sc_dmat = pa->pa_dmat;
    975 		if (sc->sc_dma_ok == 0) {
    976 			printf(", but unused (couldn't map registers)");
    977 		} else {
    978 			sc->sc_wdcdev.dma_arg = sc;
    979 			sc->sc_wdcdev.dma_init = pciide_dma_init;
    980 			sc->sc_wdcdev.dma_start = pciide_dma_start;
    981 			sc->sc_wdcdev.dma_finish = pciide_dma_finish;
    982 		}
    983 
    984 		if (sc->sc_wdcdev.sc_dev.dv_cfdata->cf_flags &
    985 		    PCIIDE_OPTIONS_NODMA) {
    986 			printf(", but unused (forced off by config file)");
    987 			sc->sc_dma_ok = 0;
    988 		}
    989 		break;
    990 
    991 	default:
    992 		sc->sc_dma_ok = 0;
    993 		printf(", but unsupported register maptype (0x%x)", maptype);
    994 	}
    995 }
    996 
    997 int
    998 pciide_compat_intr(arg)
    999 	void *arg;
   1000 {
   1001 	struct pciide_channel *cp = arg;
   1002 
   1003 #ifdef DIAGNOSTIC
   1004 	/* should only be called for a compat channel */
   1005 	if (cp->compat == 0)
   1006 		panic("pciide compat intr called for non-compat chan %p", cp);
   1007 #endif
   1008 	return (wdcintr(&cp->wdc_channel));
   1009 }
   1010 
   1011 int
   1012 pciide_pci_intr(arg)
   1013 	void *arg;
   1014 {
   1015 	struct pciide_softc *sc = arg;
   1016 	struct pciide_channel *cp;
   1017 	struct channel_softc *wdc_cp;
   1018 	int i, rv, crv;
   1019 
   1020 	rv = 0;
   1021 	for (i = 0; i < sc->sc_wdcdev.nchannels; i++) {
   1022 		cp = &sc->pciide_channels[i];
   1023 		wdc_cp = &cp->wdc_channel;
   1024 
   1025 		/* If a compat channel skip. */
   1026 		if (cp->compat)
   1027 			continue;
   1028 		/* if this channel not waiting for intr, skip */
   1029 		if ((wdc_cp->ch_flags & WDCF_IRQ_WAIT) == 0)
   1030 			continue;
   1031 
   1032 		crv = wdcintr(wdc_cp);
   1033 		if (crv == 0)
   1034 			;		/* leave rv alone */
   1035 		else if (crv == 1)
   1036 			rv = 1;		/* claim the intr */
   1037 		else if (rv == 0)	/* crv should be -1 in this case */
   1038 			rv = crv;	/* if we've done no better, take it */
   1039 	}
   1040 	return (rv);
   1041 }
   1042 
   1043 void
   1044 pciide_channel_dma_setup(cp)
   1045 	struct pciide_channel *cp;
   1046 {
   1047 	int drive;
   1048 	struct pciide_softc *sc = (struct pciide_softc *)cp->wdc_channel.wdc;
   1049 	struct ata_drive_datas *drvp;
   1050 
   1051 	for (drive = 0; drive < 2; drive++) {
   1052 		drvp = &cp->wdc_channel.ch_drive[drive];
   1053 		/* If no drive, skip */
   1054 		if ((drvp->drive_flags & DRIVE) == 0)
   1055 			continue;
   1056 		/* setup DMA if needed */
   1057 		if (((drvp->drive_flags & DRIVE_DMA) == 0 &&
   1058 		    (drvp->drive_flags & DRIVE_UDMA) == 0) ||
   1059 		    sc->sc_dma_ok == 0) {
   1060 			drvp->drive_flags &= ~(DRIVE_DMA | DRIVE_UDMA);
   1061 			continue;
   1062 		}
   1063 		if (pciide_dma_table_setup(sc, cp->wdc_channel.channel, drive)
   1064 		    != 0) {
   1065 			/* Abort DMA setup */
   1066 			drvp->drive_flags &= ~(DRIVE_DMA | DRIVE_UDMA);
   1067 			continue;
   1068 		}
   1069 	}
   1070 }
   1071 
   1072 int
   1073 pciide_dma_table_setup(sc, channel, drive)
   1074 	struct pciide_softc *sc;
   1075 	int channel, drive;
   1076 {
   1077 	bus_dma_segment_t seg;
   1078 	int error, rseg;
   1079 	const bus_size_t dma_table_size =
   1080 	    sizeof(struct idedma_table) * NIDEDMA_TABLES;
   1081 	struct pciide_dma_maps *dma_maps =
   1082 	    &sc->pciide_channels[channel].dma_maps[drive];
   1083 
   1084 	/* If table was already allocated, just return */
   1085 	if (dma_maps->dma_table)
   1086 		return 0;
   1087 
   1088 	/* Allocate memory for the DMA tables and map it */
   1089 	if ((error = bus_dmamem_alloc(sc->sc_dmat, dma_table_size,
   1090 	    IDEDMA_TBL_ALIGN, IDEDMA_TBL_ALIGN, &seg, 1, &rseg,
   1091 	    BUS_DMA_NOWAIT)) != 0) {
   1092 		printf("%s:%d: unable to allocate table DMA for "
   1093 		    "drive %d, error=%d\n", sc->sc_wdcdev.sc_dev.dv_xname,
   1094 		    channel, drive, error);
   1095 		return error;
   1096 	}
   1097 	if ((error = bus_dmamem_map(sc->sc_dmat, &seg, rseg,
   1098 	    dma_table_size,
   1099 	    (caddr_t *)&dma_maps->dma_table,
   1100 	    BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) != 0) {
   1101 		printf("%s:%d: unable to map table DMA for"
   1102 		    "drive %d, error=%d\n", sc->sc_wdcdev.sc_dev.dv_xname,
   1103 		    channel, drive, error);
   1104 		return error;
   1105 	}
   1106 	WDCDEBUG_PRINT(("pciide_dma_table_setup: table at %p len %lu, "
   1107 	    "phy 0x%lx\n", dma_maps->dma_table, (u_long)dma_table_size,
   1108 	    (unsigned long)seg.ds_addr), DEBUG_PROBE);
   1109 
   1110 	/* Create and load table DMA map for this disk */
   1111 	if ((error = bus_dmamap_create(sc->sc_dmat, dma_table_size,
   1112 	    1, dma_table_size, IDEDMA_TBL_ALIGN, BUS_DMA_NOWAIT,
   1113 	    &dma_maps->dmamap_table)) != 0) {
   1114 		printf("%s:%d: unable to create table DMA map for "
   1115 		    "drive %d, error=%d\n", sc->sc_wdcdev.sc_dev.dv_xname,
   1116 		    channel, drive, error);
   1117 		return error;
   1118 	}
   1119 	if ((error = bus_dmamap_load(sc->sc_dmat,
   1120 	    dma_maps->dmamap_table,
   1121 	    dma_maps->dma_table,
   1122 	    dma_table_size, NULL, BUS_DMA_NOWAIT)) != 0) {
   1123 		printf("%s:%d: unable to load table DMA map for "
   1124 		    "drive %d, error=%d\n", sc->sc_wdcdev.sc_dev.dv_xname,
   1125 		    channel, drive, error);
   1126 		return error;
   1127 	}
   1128 	WDCDEBUG_PRINT(("pciide_dma_table_setup: phy addr of table 0x%lx\n",
   1129 	    (unsigned long)dma_maps->dmamap_table->dm_segs[0].ds_addr),
   1130 	    DEBUG_PROBE);
   1131 	/* Create a xfer DMA map for this drive */
   1132 	if ((error = bus_dmamap_create(sc->sc_dmat, IDEDMA_BYTE_COUNT_MAX,
   1133 	    NIDEDMA_TABLES, IDEDMA_BYTE_COUNT_MAX, IDEDMA_BYTE_COUNT_ALIGN,
   1134 	    BUS_DMA_NOWAIT | BUS_DMA_ALLOCNOW,
   1135 	    &dma_maps->dmamap_xfer)) != 0) {
   1136 		printf("%s:%d: unable to create xfer DMA map for "
   1137 		    "drive %d, error=%d\n", sc->sc_wdcdev.sc_dev.dv_xname,
   1138 		    channel, drive, error);
   1139 		return error;
   1140 	}
   1141 	return 0;
   1142 }
   1143 
   1144 int
   1145 pciide_dma_init(v, channel, drive, databuf, datalen, flags)
   1146 	void *v;
   1147 	int channel, drive;
   1148 	void *databuf;
   1149 	size_t datalen;
   1150 	int flags;
   1151 {
   1152 	struct pciide_softc *sc = v;
   1153 	int error, seg;
   1154 	struct pciide_dma_maps *dma_maps =
   1155 	    &sc->pciide_channels[channel].dma_maps[drive];
   1156 
   1157 	error = bus_dmamap_load(sc->sc_dmat,
   1158 	    dma_maps->dmamap_xfer,
   1159 	    databuf, datalen, NULL, BUS_DMA_NOWAIT | BUS_DMA_STREAMING |
   1160 	    ((flags & WDC_DMA_READ) ? BUS_DMA_READ : BUS_DMA_WRITE));
   1161 	if (error) {
   1162 		printf("%s:%d: unable to load xfer DMA map for"
   1163 		    "drive %d, error=%d\n", sc->sc_wdcdev.sc_dev.dv_xname,
   1164 		    channel, drive, error);
   1165 		return error;
   1166 	}
   1167 
   1168 	bus_dmamap_sync(sc->sc_dmat, dma_maps->dmamap_xfer, 0,
   1169 	    dma_maps->dmamap_xfer->dm_mapsize,
   1170 	    (flags & WDC_DMA_READ) ?
   1171 	    BUS_DMASYNC_PREREAD : BUS_DMASYNC_PREWRITE);
   1172 
   1173 	for (seg = 0; seg < dma_maps->dmamap_xfer->dm_nsegs; seg++) {
   1174 #ifdef DIAGNOSTIC
   1175 		/* A segment must not cross a 64k boundary */
   1176 		{
   1177 		u_long phys = dma_maps->dmamap_xfer->dm_segs[seg].ds_addr;
   1178 		u_long len = dma_maps->dmamap_xfer->dm_segs[seg].ds_len;
   1179 		if ((phys & ~IDEDMA_BYTE_COUNT_MASK) !=
   1180 		    ((phys + len - 1) & ~IDEDMA_BYTE_COUNT_MASK)) {
   1181 			printf("pciide_dma: segment %d physical addr 0x%lx"
   1182 			    " len 0x%lx not properly aligned\n",
   1183 			    seg, phys, len);
   1184 			panic("pciide_dma: buf align");
   1185 		}
   1186 		}
   1187 #endif
   1188 		dma_maps->dma_table[seg].base_addr =
   1189 		    htole32(dma_maps->dmamap_xfer->dm_segs[seg].ds_addr);
   1190 		dma_maps->dma_table[seg].byte_count =
   1191 		    htole32(dma_maps->dmamap_xfer->dm_segs[seg].ds_len &
   1192 		    IDEDMA_BYTE_COUNT_MASK);
   1193 		WDCDEBUG_PRINT(("\t seg %d len %d addr 0x%x\n",
   1194 		   seg, le32toh(dma_maps->dma_table[seg].byte_count),
   1195 		   le32toh(dma_maps->dma_table[seg].base_addr)), DEBUG_DMA);
   1196 
   1197 	}
   1198 	dma_maps->dma_table[dma_maps->dmamap_xfer->dm_nsegs -1].byte_count |=
   1199 	    htole32(IDEDMA_BYTE_COUNT_EOT);
   1200 
   1201 	bus_dmamap_sync(sc->sc_dmat, dma_maps->dmamap_table, 0,
   1202 	    dma_maps->dmamap_table->dm_mapsize,
   1203 	    BUS_DMASYNC_PREWRITE);
   1204 
   1205 	/* Maps are ready. Start DMA function */
   1206 #ifdef DIAGNOSTIC
   1207 	if (dma_maps->dmamap_table->dm_segs[0].ds_addr & ~IDEDMA_TBL_MASK) {
   1208 		printf("pciide_dma_init: addr 0x%lx not properly aligned\n",
   1209 		    (u_long)dma_maps->dmamap_table->dm_segs[0].ds_addr);
   1210 		panic("pciide_dma_init: table align");
   1211 	}
   1212 #endif
   1213 
   1214 	/* Clear status bits */
   1215 	bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   1216 	    IDEDMA_CTL + IDEDMA_SCH_OFFSET * channel,
   1217 	    bus_space_read_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   1218 		IDEDMA_CTL + IDEDMA_SCH_OFFSET * channel));
   1219 	/* Write table addr */
   1220 	bus_space_write_4(sc->sc_dma_iot, sc->sc_dma_ioh,
   1221 	    IDEDMA_TBL + IDEDMA_SCH_OFFSET * channel,
   1222 	    dma_maps->dmamap_table->dm_segs[0].ds_addr);
   1223 	/* set read/write */
   1224 	bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   1225 	    IDEDMA_CMD + IDEDMA_SCH_OFFSET * channel,
   1226 	    (flags & WDC_DMA_READ) ? IDEDMA_CMD_WRITE: 0);
   1227 	/* remember flags */
   1228 	dma_maps->dma_flags = flags;
   1229 	return 0;
   1230 }
   1231 
   1232 void
   1233 pciide_dma_start(v, channel, drive)
   1234 	void *v;
   1235 	int channel, drive;
   1236 {
   1237 	struct pciide_softc *sc = v;
   1238 
   1239 	WDCDEBUG_PRINT(("pciide_dma_start\n"),DEBUG_XFERS);
   1240 	bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   1241 	    IDEDMA_CMD + IDEDMA_SCH_OFFSET * channel,
   1242 	    bus_space_read_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   1243 		IDEDMA_CMD + IDEDMA_SCH_OFFSET * channel) | IDEDMA_CMD_START);
   1244 }
   1245 
   1246 int
   1247 pciide_dma_finish(v, channel, drive, force)
   1248 	void *v;
   1249 	int channel, drive;
   1250 	int force;
   1251 {
   1252 	struct pciide_softc *sc = v;
   1253 	u_int8_t status;
   1254 	int error = 0;
   1255 	struct pciide_dma_maps *dma_maps =
   1256 	    &sc->pciide_channels[channel].dma_maps[drive];
   1257 
   1258 	status = bus_space_read_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   1259 	    IDEDMA_CTL + IDEDMA_SCH_OFFSET * channel);
   1260 	WDCDEBUG_PRINT(("pciide_dma_finish: status 0x%x\n", status),
   1261 	    DEBUG_XFERS);
   1262 
   1263 	if (force == 0 && (status & IDEDMA_CTL_INTR) == 0)
   1264 		return WDC_DMAST_NOIRQ;
   1265 
   1266 	/* stop DMA channel */
   1267 	bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   1268 	    IDEDMA_CMD + IDEDMA_SCH_OFFSET * channel,
   1269 	    bus_space_read_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   1270 		IDEDMA_CMD + IDEDMA_SCH_OFFSET * channel) & ~IDEDMA_CMD_START);
   1271 
   1272 	/* Unload the map of the data buffer */
   1273 	bus_dmamap_sync(sc->sc_dmat, dma_maps->dmamap_xfer, 0,
   1274 	    dma_maps->dmamap_xfer->dm_mapsize,
   1275 	    (dma_maps->dma_flags & WDC_DMA_READ) ?
   1276 	    BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE);
   1277 	bus_dmamap_unload(sc->sc_dmat, dma_maps->dmamap_xfer);
   1278 
   1279 	if ((status & IDEDMA_CTL_ERR) != 0) {
   1280 		printf("%s:%d:%d: bus-master DMA error: status=0x%x\n",
   1281 		    sc->sc_wdcdev.sc_dev.dv_xname, channel, drive, status);
   1282 		error |= WDC_DMAST_ERR;
   1283 	}
   1284 
   1285 	if ((status & IDEDMA_CTL_INTR) == 0) {
   1286 		printf("%s:%d:%d: bus-master DMA error: missing interrupt, "
   1287 		    "status=0x%x\n", sc->sc_wdcdev.sc_dev.dv_xname, channel,
   1288 		    drive, status);
   1289 		error |= WDC_DMAST_NOIRQ;
   1290 	}
   1291 
   1292 	if ((status & IDEDMA_CTL_ACT) != 0) {
   1293 		/* data underrun, may be a valid condition for ATAPI */
   1294 		error |= WDC_DMAST_UNDER;
   1295 	}
   1296 	return error;
   1297 }
   1298 
   1299 void
   1300 pciide_irqack(chp)
   1301 	struct channel_softc *chp;
   1302 {
   1303 	struct pciide_channel *cp = (struct pciide_channel*)chp;
   1304 	struct pciide_softc *sc = (struct pciide_softc *)cp->wdc_channel.wdc;
   1305 
   1306 	/* clear status bits in IDE DMA registers */
   1307 	bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   1308 	    IDEDMA_CTL + IDEDMA_SCH_OFFSET * chp->channel,
   1309 	    bus_space_read_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   1310 		IDEDMA_CTL + IDEDMA_SCH_OFFSET * chp->channel));
   1311 }
   1312 
   1313 /* some common code used by several chip_map */
   1314 int
   1315 pciide_chansetup(sc, channel, interface)
   1316 	struct pciide_softc *sc;
   1317 	int channel;
   1318 	pcireg_t interface;
   1319 {
   1320 	struct pciide_channel *cp = &sc->pciide_channels[channel];
   1321 	sc->wdc_chanarray[channel] = &cp->wdc_channel;
   1322 	cp->name = PCIIDE_CHANNEL_NAME(channel);
   1323 	cp->wdc_channel.channel = channel;
   1324 	cp->wdc_channel.wdc = &sc->sc_wdcdev;
   1325 	cp->wdc_channel.ch_queue =
   1326 	    malloc(sizeof(struct channel_queue), M_DEVBUF, M_NOWAIT);
   1327 	if (cp->wdc_channel.ch_queue == NULL) {
   1328 		printf("%s %s channel: "
   1329 		    "can't allocate memory for command queue",
   1330 		sc->sc_wdcdev.sc_dev.dv_xname, cp->name);
   1331 		return 0;
   1332 	}
   1333 	printf("%s: %s channel %s to %s mode\n",
   1334 	    sc->sc_wdcdev.sc_dev.dv_xname, cp->name,
   1335 	    (interface & PCIIDE_INTERFACE_SETTABLE(channel)) ?
   1336 	    "configured" : "wired",
   1337 	    (interface & PCIIDE_INTERFACE_PCI(channel)) ?
   1338 	    "native-PCI" : "compatibility");
   1339 	return 1;
   1340 }
   1341 
   1342 /* some common code used by several chip channel_map */
   1343 void
   1344 pciide_mapchan(pa, cp, interface, cmdsizep, ctlsizep, pci_intr)
   1345 	struct pci_attach_args *pa;
   1346 	struct pciide_channel *cp;
   1347 	pcireg_t interface;
   1348 	bus_size_t *cmdsizep, *ctlsizep;
   1349 	int (*pci_intr) __P((void *));
   1350 {
   1351 	struct channel_softc *wdc_cp = &cp->wdc_channel;
   1352 
   1353 	if (interface & PCIIDE_INTERFACE_PCI(wdc_cp->channel))
   1354 		cp->hw_ok = pciide_mapregs_native(pa, cp, cmdsizep, ctlsizep,
   1355 		    pci_intr);
   1356 	else
   1357 		cp->hw_ok = pciide_mapregs_compat(pa, cp,
   1358 		    wdc_cp->channel, cmdsizep, ctlsizep);
   1359 
   1360 	if (cp->hw_ok == 0)
   1361 		return;
   1362 	wdc_cp->data32iot = wdc_cp->cmd_iot;
   1363 	wdc_cp->data32ioh = wdc_cp->cmd_ioh;
   1364 	wdcattach(wdc_cp);
   1365 }
   1366 
   1367 /*
   1368  * Generic code to call to know if a channel can be disabled. Return 1
   1369  * if channel can be disabled, 0 if not
   1370  */
   1371 int
   1372 pciide_chan_candisable(cp)
   1373 	struct pciide_channel *cp;
   1374 {
   1375 	struct pciide_softc *sc = (struct pciide_softc *)cp->wdc_channel.wdc;
   1376 	struct channel_softc *wdc_cp = &cp->wdc_channel;
   1377 
   1378 	if ((wdc_cp->ch_drive[0].drive_flags & DRIVE) == 0 &&
   1379 	    (wdc_cp->ch_drive[1].drive_flags & DRIVE) == 0) {
   1380 		printf("%s: disabling %s channel (no drives)\n",
   1381 		    sc->sc_wdcdev.sc_dev.dv_xname, cp->name);
   1382 		cp->hw_ok = 0;
   1383 		return 1;
   1384 	}
   1385 	return 0;
   1386 }
   1387 
   1388 /*
   1389  * generic code to map the compat intr if hw_ok=1 and it is a compat channel.
   1390  * Set hw_ok=0 on failure
   1391  */
   1392 void
   1393 pciide_map_compat_intr(pa, cp, compatchan, interface)
   1394 	struct pci_attach_args *pa;
   1395 	struct pciide_channel *cp;
   1396 	int compatchan, interface;
   1397 {
   1398 	struct pciide_softc *sc = (struct pciide_softc *)cp->wdc_channel.wdc;
   1399 	struct channel_softc *wdc_cp = &cp->wdc_channel;
   1400 
   1401 	if (cp->hw_ok == 0)
   1402 		return;
   1403 	if ((interface & PCIIDE_INTERFACE_PCI(wdc_cp->channel)) != 0)
   1404 		return;
   1405 
   1406 #ifdef __HAVE_PCIIDE_MACHDEP_COMPAT_INTR_ESTABLISH
   1407 	cp->ih = pciide_machdep_compat_intr_establish(&sc->sc_wdcdev.sc_dev,
   1408 	    pa, compatchan, pciide_compat_intr, cp);
   1409 	if (cp->ih == NULL) {
   1410 #endif
   1411 		printf("%s: no compatibility interrupt for use by %s "
   1412 		    "channel\n", sc->sc_wdcdev.sc_dev.dv_xname, cp->name);
   1413 		cp->hw_ok = 0;
   1414 #ifdef __HAVE_PCIIDE_MACHDEP_COMPAT_INTR_ESTABLISH
   1415 	}
   1416 #endif
   1417 }
   1418 
   1419 void
   1420 pciide_print_modes(cp)
   1421 	struct pciide_channel *cp;
   1422 {
   1423 	wdc_print_modes(&cp->wdc_channel);
   1424 }
   1425 
   1426 void
   1427 default_chip_map(sc, pa)
   1428 	struct pciide_softc *sc;
   1429 	struct pci_attach_args *pa;
   1430 {
   1431 	struct pciide_channel *cp;
   1432 	pcireg_t interface = PCI_INTERFACE(pa->pa_class);
   1433 	pcireg_t csr;
   1434 	int channel, drive;
   1435 	struct ata_drive_datas *drvp;
   1436 	u_int8_t idedma_ctl;
   1437 	bus_size_t cmdsize, ctlsize;
   1438 	char *failreason;
   1439 
   1440 	if (pciide_chipen(sc, pa) == 0)
   1441 		return;
   1442 
   1443 	if (interface & PCIIDE_INTERFACE_BUS_MASTER_DMA) {
   1444 		printf("%s: bus-master DMA support present",
   1445 		    sc->sc_wdcdev.sc_dev.dv_xname);
   1446 		if (sc->sc_pp == &default_product_desc &&
   1447 		    (sc->sc_wdcdev.sc_dev.dv_cfdata->cf_flags &
   1448 		    PCIIDE_OPTIONS_DMA) == 0) {
   1449 			printf(", but unused (no driver support)");
   1450 			sc->sc_dma_ok = 0;
   1451 		} else {
   1452 			pciide_mapreg_dma(sc, pa);
   1453 			if (sc->sc_dma_ok != 0)
   1454 				printf(", used without full driver "
   1455 				    "support");
   1456 		}
   1457 	} else {
   1458 		printf("%s: hardware does not support DMA",
   1459 		    sc->sc_wdcdev.sc_dev.dv_xname);
   1460 		sc->sc_dma_ok = 0;
   1461 	}
   1462 	printf("\n");
   1463 	if (sc->sc_dma_ok) {
   1464 		sc->sc_wdcdev.cap |= WDC_CAPABILITY_DMA | WDC_CAPABILITY_IRQACK;
   1465 		sc->sc_wdcdev.irqack = pciide_irqack;
   1466 	}
   1467 	sc->sc_wdcdev.PIO_cap = 0;
   1468 	sc->sc_wdcdev.DMA_cap = 0;
   1469 
   1470 	sc->sc_wdcdev.channels = sc->wdc_chanarray;
   1471 	sc->sc_wdcdev.nchannels = PCIIDE_NUM_CHANNELS;
   1472 	sc->sc_wdcdev.cap |= WDC_CAPABILITY_DATA16;
   1473 
   1474 	for (channel = 0; channel < sc->sc_wdcdev.nchannels; channel++) {
   1475 		cp = &sc->pciide_channels[channel];
   1476 		if (pciide_chansetup(sc, channel, interface) == 0)
   1477 			continue;
   1478 		if (interface & PCIIDE_INTERFACE_PCI(channel)) {
   1479 			cp->hw_ok = pciide_mapregs_native(pa, cp, &cmdsize,
   1480 			    &ctlsize, pciide_pci_intr);
   1481 		} else {
   1482 			cp->hw_ok = pciide_mapregs_compat(pa, cp,
   1483 			    channel, &cmdsize, &ctlsize);
   1484 		}
   1485 		if (cp->hw_ok == 0)
   1486 			continue;
   1487 		/*
   1488 		 * Check to see if something appears to be there.
   1489 		 */
   1490 		failreason = NULL;
   1491 		if (!wdcprobe(&cp->wdc_channel)) {
   1492 			failreason = "not responding; disabled or no drives?";
   1493 			goto next;
   1494 		}
   1495 		/*
   1496 		 * Now, make sure it's actually attributable to this PCI IDE
   1497 		 * channel by trying to access the channel again while the
   1498 		 * PCI IDE controller's I/O space is disabled.  (If the
   1499 		 * channel no longer appears to be there, it belongs to
   1500 		 * this controller.)  YUCK!
   1501 		 */
   1502 		csr = pci_conf_read(sc->sc_pc, sc->sc_tag,
   1503 		    PCI_COMMAND_STATUS_REG);
   1504 		pci_conf_write(sc->sc_pc, sc->sc_tag, PCI_COMMAND_STATUS_REG,
   1505 		    csr & ~PCI_COMMAND_IO_ENABLE);
   1506 		if (wdcprobe(&cp->wdc_channel))
   1507 			failreason = "other hardware responding at addresses";
   1508 		pci_conf_write(sc->sc_pc, sc->sc_tag,
   1509 		    PCI_COMMAND_STATUS_REG, csr);
   1510 next:
   1511 		if (failreason) {
   1512 			printf("%s: %s channel ignored (%s)\n",
   1513 			    sc->sc_wdcdev.sc_dev.dv_xname, cp->name,
   1514 			    failreason);
   1515 			cp->hw_ok = 0;
   1516 			bus_space_unmap(cp->wdc_channel.cmd_iot,
   1517 			    cp->wdc_channel.cmd_ioh, cmdsize);
   1518 			if (interface & PCIIDE_INTERFACE_PCI(channel))
   1519 				bus_space_unmap(cp->wdc_channel.ctl_iot,
   1520 				    cp->ctl_baseioh, ctlsize);
   1521 			else
   1522 				bus_space_unmap(cp->wdc_channel.ctl_iot,
   1523 				    cp->wdc_channel.ctl_ioh, ctlsize);
   1524 		} else {
   1525 			pciide_map_compat_intr(pa, cp, channel, interface);
   1526 		}
   1527 		if (cp->hw_ok) {
   1528 			cp->wdc_channel.data32iot = cp->wdc_channel.cmd_iot;
   1529 			cp->wdc_channel.data32ioh = cp->wdc_channel.cmd_ioh;
   1530 			wdcattach(&cp->wdc_channel);
   1531 		}
   1532 	}
   1533 
   1534 	if (sc->sc_dma_ok == 0)
   1535 		return;
   1536 
   1537 	/* Allocate DMA maps */
   1538 	for (channel = 0; channel < sc->sc_wdcdev.nchannels; channel++) {
   1539 		idedma_ctl = 0;
   1540 		cp = &sc->pciide_channels[channel];
   1541 		for (drive = 0; drive < 2; drive++) {
   1542 			drvp = &cp->wdc_channel.ch_drive[drive];
   1543 			/* If no drive, skip */
   1544 			if ((drvp->drive_flags & DRIVE) == 0)
   1545 				continue;
   1546 			if ((drvp->drive_flags & DRIVE_DMA) == 0)
   1547 				continue;
   1548 			if (pciide_dma_table_setup(sc, channel, drive) != 0) {
   1549 				/* Abort DMA setup */
   1550 				printf("%s:%d:%d: can't allocate DMA maps, "
   1551 				    "using PIO transfers\n",
   1552 				    sc->sc_wdcdev.sc_dev.dv_xname,
   1553 				    channel, drive);
   1554 				drvp->drive_flags &= ~DRIVE_DMA;
   1555 			}
   1556 			printf("%s:%d:%d: using DMA data transfers\n",
   1557 			    sc->sc_wdcdev.sc_dev.dv_xname,
   1558 			    channel, drive);
   1559 			idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
   1560 		}
   1561 		if (idedma_ctl != 0) {
   1562 			/* Add software bits in status register */
   1563 			bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   1564 			    IDEDMA_CTL + (IDEDMA_SCH_OFFSET * channel),
   1565 			    idedma_ctl);
   1566 		}
   1567 	}
   1568 }
   1569 
   1570 void
   1571 sata_setup_channel(chp)
   1572 	struct channel_softc *chp;
   1573 {
   1574 	struct ata_drive_datas *drvp;
   1575 	int drive;
   1576 	u_int32_t idedma_ctl;
   1577 	struct pciide_channel *cp = (struct pciide_channel*)chp;
   1578 	struct pciide_softc *sc = (struct pciide_softc*)cp->wdc_channel.wdc;
   1579 
   1580 	/* setup DMA if needed */
   1581 	pciide_channel_dma_setup(cp);
   1582 
   1583 	idedma_ctl = 0;
   1584 
   1585 	for (drive = 0; drive < 2; drive++) {
   1586 		drvp = &chp->ch_drive[drive];
   1587 		/* If no drive, skip */
   1588 		if ((drvp->drive_flags & DRIVE) == 0)
   1589 			continue;
   1590 		if (drvp->drive_flags & DRIVE_UDMA) {
   1591 			/* use Ultra/DMA */
   1592 			drvp->drive_flags &= ~DRIVE_DMA;
   1593 			idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
   1594 		} else if (drvp->drive_flags & DRIVE_DMA) {
   1595 			idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
   1596 		}
   1597 	}
   1598 
   1599 	/*
   1600 	 * Nothing to do to setup modes; it is meaningless in S-ATA
   1601 	 * (but many S-ATA drives still want to get the SET_FEATURE
   1602 	 * command).
   1603 	 */
   1604 	if (idedma_ctl != 0) {
   1605 		/* Add software bits in status register */
   1606 		bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   1607 		    IDEDMA_CTL + (IDEDMA_SCH_OFFSET * chp->channel),
   1608 		    idedma_ctl);
   1609 	}
   1610 	pciide_print_modes(cp);
   1611 }
   1612 
   1613 void
   1614 piix_chip_map(sc, pa)
   1615 	struct pciide_softc *sc;
   1616 	struct pci_attach_args *pa;
   1617 {
   1618 	struct pciide_channel *cp;
   1619 	int channel;
   1620 	u_int32_t idetim;
   1621 	bus_size_t cmdsize, ctlsize;
   1622 
   1623 	if (pciide_chipen(sc, pa) == 0)
   1624 		return;
   1625 
   1626 	printf("%s: bus-master DMA support present",
   1627 	    sc->sc_wdcdev.sc_dev.dv_xname);
   1628 	pciide_mapreg_dma(sc, pa);
   1629 	printf("\n");
   1630 	sc->sc_wdcdev.cap |= WDC_CAPABILITY_DATA16 | WDC_CAPABILITY_DATA32 |
   1631 	    WDC_CAPABILITY_MODE;
   1632 	if (sc->sc_dma_ok) {
   1633 		sc->sc_wdcdev.cap |= WDC_CAPABILITY_DMA | WDC_CAPABILITY_IRQACK;
   1634 		sc->sc_wdcdev.irqack = pciide_irqack;
   1635 		switch(sc->sc_pp->ide_product) {
   1636 		case PCI_PRODUCT_INTEL_82371AB_IDE:
   1637 		case PCI_PRODUCT_INTEL_82440MX_IDE:
   1638 		case PCI_PRODUCT_INTEL_82801AA_IDE:
   1639 		case PCI_PRODUCT_INTEL_82801AB_IDE:
   1640 		case PCI_PRODUCT_INTEL_82801BA_IDE:
   1641 		case PCI_PRODUCT_INTEL_82801BAM_IDE:
   1642 		case PCI_PRODUCT_INTEL_82801CA_IDE_1:
   1643 		case PCI_PRODUCT_INTEL_82801CA_IDE_2:
   1644 		case PCI_PRODUCT_INTEL_82801DB_IDE:
   1645 			sc->sc_wdcdev.cap |= WDC_CAPABILITY_UDMA;
   1646 		}
   1647 	}
   1648 	sc->sc_wdcdev.PIO_cap = 4;
   1649 	sc->sc_wdcdev.DMA_cap = 2;
   1650 	switch(sc->sc_pp->ide_product) {
   1651 	case PCI_PRODUCT_INTEL_82801AA_IDE:
   1652 		sc->sc_wdcdev.UDMA_cap = 4;
   1653 		break;
   1654 	case PCI_PRODUCT_INTEL_82801BA_IDE:
   1655 	case PCI_PRODUCT_INTEL_82801BAM_IDE:
   1656 	case PCI_PRODUCT_INTEL_82801CA_IDE_1:
   1657 	case PCI_PRODUCT_INTEL_82801CA_IDE_2:
   1658 	case PCI_PRODUCT_INTEL_82801DB_IDE:
   1659 		sc->sc_wdcdev.UDMA_cap = 5;
   1660 		break;
   1661 	default:
   1662 		sc->sc_wdcdev.UDMA_cap = 2;
   1663 	}
   1664 	if (sc->sc_pp->ide_product == PCI_PRODUCT_INTEL_82371FB_IDE)
   1665 		sc->sc_wdcdev.set_modes = piix_setup_channel;
   1666 	else
   1667 		sc->sc_wdcdev.set_modes = piix3_4_setup_channel;
   1668 	sc->sc_wdcdev.channels = sc->wdc_chanarray;
   1669 	sc->sc_wdcdev.nchannels = PCIIDE_NUM_CHANNELS;
   1670 
   1671 	WDCDEBUG_PRINT(("piix_setup_chip: old idetim=0x%x",
   1672 	    pci_conf_read(sc->sc_pc, sc->sc_tag, PIIX_IDETIM)),
   1673 	    DEBUG_PROBE);
   1674 	if (sc->sc_pp->ide_product != PCI_PRODUCT_INTEL_82371FB_IDE) {
   1675 		WDCDEBUG_PRINT((", sidetim=0x%x",
   1676 		    pci_conf_read(sc->sc_pc, sc->sc_tag, PIIX_SIDETIM)),
   1677 		    DEBUG_PROBE);
   1678 		if (sc->sc_wdcdev.cap & WDC_CAPABILITY_UDMA) {
   1679 			WDCDEBUG_PRINT((", udamreg 0x%x",
   1680 			    pci_conf_read(sc->sc_pc, sc->sc_tag, PIIX_UDMAREG)),
   1681 			    DEBUG_PROBE);
   1682 		}
   1683 		if (sc->sc_pp->ide_product == PCI_PRODUCT_INTEL_82801AA_IDE ||
   1684 		    sc->sc_pp->ide_product == PCI_PRODUCT_INTEL_82801AB_IDE ||
   1685 		    sc->sc_pp->ide_product == PCI_PRODUCT_INTEL_82801BA_IDE ||
   1686 		    sc->sc_pp->ide_product == PCI_PRODUCT_INTEL_82801BAM_IDE ||
   1687 		    sc->sc_pp->ide_product == PCI_PRODUCT_INTEL_82801CA_IDE_1 ||
   1688 		    sc->sc_pp->ide_product == PCI_PRODUCT_INTEL_82801CA_IDE_2 ||
   1689 		    sc->sc_pp->ide_product == PCI_PRODUCT_INTEL_82801DB_IDE) {
   1690 			WDCDEBUG_PRINT((", IDE_CONTROL 0x%x",
   1691 			    pci_conf_read(sc->sc_pc, sc->sc_tag, PIIX_CONFIG)),
   1692 			    DEBUG_PROBE);
   1693 		}
   1694 
   1695 	}
   1696 	WDCDEBUG_PRINT(("\n"), DEBUG_PROBE);
   1697 
   1698 	for (channel = 0; channel < sc->sc_wdcdev.nchannels; channel++) {
   1699 		cp = &sc->pciide_channels[channel];
   1700 		/* PIIX is compat-only */
   1701 		if (pciide_chansetup(sc, channel, 0) == 0)
   1702 			continue;
   1703 		idetim = pci_conf_read(sc->sc_pc, sc->sc_tag, PIIX_IDETIM);
   1704 		if ((PIIX_IDETIM_READ(idetim, channel) &
   1705 		    PIIX_IDETIM_IDE) == 0) {
   1706 			printf("%s: %s channel ignored (disabled)\n",
   1707 			    sc->sc_wdcdev.sc_dev.dv_xname, cp->name);
   1708 			continue;
   1709 		}
   1710 		/* PIIX are compat-only pciide devices */
   1711 		pciide_mapchan(pa, cp, 0, &cmdsize, &ctlsize, pciide_pci_intr);
   1712 		if (cp->hw_ok == 0)
   1713 			continue;
   1714 		if (pciide_chan_candisable(cp)) {
   1715 			idetim = PIIX_IDETIM_CLEAR(idetim, PIIX_IDETIM_IDE,
   1716 			    channel);
   1717 			pci_conf_write(sc->sc_pc, sc->sc_tag, PIIX_IDETIM,
   1718 			    idetim);
   1719 		}
   1720 		pciide_map_compat_intr(pa, cp, channel, 0);
   1721 		if (cp->hw_ok == 0)
   1722 			continue;
   1723 		sc->sc_wdcdev.set_modes(&cp->wdc_channel);
   1724 	}
   1725 
   1726 	WDCDEBUG_PRINT(("piix_setup_chip: idetim=0x%x",
   1727 	    pci_conf_read(sc->sc_pc, sc->sc_tag, PIIX_IDETIM)),
   1728 	    DEBUG_PROBE);
   1729 	if (sc->sc_pp->ide_product != PCI_PRODUCT_INTEL_82371FB_IDE) {
   1730 		WDCDEBUG_PRINT((", sidetim=0x%x",
   1731 		    pci_conf_read(sc->sc_pc, sc->sc_tag, PIIX_SIDETIM)),
   1732 		    DEBUG_PROBE);
   1733 		if (sc->sc_wdcdev.cap & WDC_CAPABILITY_UDMA) {
   1734 			WDCDEBUG_PRINT((", udamreg 0x%x",
   1735 			    pci_conf_read(sc->sc_pc, sc->sc_tag, PIIX_UDMAREG)),
   1736 			    DEBUG_PROBE);
   1737 		}
   1738 		if (sc->sc_pp->ide_product == PCI_PRODUCT_INTEL_82801AA_IDE ||
   1739 		    sc->sc_pp->ide_product == PCI_PRODUCT_INTEL_82801AB_IDE ||
   1740 		    sc->sc_pp->ide_product == PCI_PRODUCT_INTEL_82801BA_IDE ||
   1741 		    sc->sc_pp->ide_product == PCI_PRODUCT_INTEL_82801BAM_IDE ||
   1742 		    sc->sc_pp->ide_product == PCI_PRODUCT_INTEL_82801CA_IDE_1 ||
   1743 		    sc->sc_pp->ide_product == PCI_PRODUCT_INTEL_82801CA_IDE_2 ||
   1744 		    sc->sc_pp->ide_product == PCI_PRODUCT_INTEL_82801DB_IDE) {
   1745 			WDCDEBUG_PRINT((", IDE_CONTROL 0x%x",
   1746 			    pci_conf_read(sc->sc_pc, sc->sc_tag, PIIX_CONFIG)),
   1747 			    DEBUG_PROBE);
   1748 		}
   1749 	}
   1750 	WDCDEBUG_PRINT(("\n"), DEBUG_PROBE);
   1751 }
   1752 
   1753 void
   1754 piix_setup_channel(chp)
   1755 	struct channel_softc *chp;
   1756 {
   1757 	u_int8_t mode[2], drive;
   1758 	u_int32_t oidetim, idetim, idedma_ctl;
   1759 	struct pciide_channel *cp = (struct pciide_channel*)chp;
   1760 	struct pciide_softc *sc = (struct pciide_softc *)cp->wdc_channel.wdc;
   1761 	struct ata_drive_datas *drvp = cp->wdc_channel.ch_drive;
   1762 
   1763 	oidetim = pci_conf_read(sc->sc_pc, sc->sc_tag, PIIX_IDETIM);
   1764 	idetim = PIIX_IDETIM_CLEAR(oidetim, 0xffff, chp->channel);
   1765 	idedma_ctl = 0;
   1766 
   1767 	/* set up new idetim: Enable IDE registers decode */
   1768 	idetim = PIIX_IDETIM_SET(idetim, PIIX_IDETIM_IDE,
   1769 	    chp->channel);
   1770 
   1771 	/* setup DMA */
   1772 	pciide_channel_dma_setup(cp);
   1773 
   1774 	/*
   1775 	 * Here we have to mess up with drives mode: PIIX can't have
   1776 	 * different timings for master and slave drives.
   1777 	 * We need to find the best combination.
   1778 	 */
   1779 
   1780 	/* If both drives supports DMA, take the lower mode */
   1781 	if ((drvp[0].drive_flags & DRIVE_DMA) &&
   1782 	    (drvp[1].drive_flags & DRIVE_DMA)) {
   1783 		mode[0] = mode[1] =
   1784 		    min(drvp[0].DMA_mode, drvp[1].DMA_mode);
   1785 		    drvp[0].DMA_mode = mode[0];
   1786 		    drvp[1].DMA_mode = mode[1];
   1787 		goto ok;
   1788 	}
   1789 	/*
   1790 	 * If only one drive supports DMA, use its mode, and
   1791 	 * put the other one in PIO mode 0 if mode not compatible
   1792 	 */
   1793 	if (drvp[0].drive_flags & DRIVE_DMA) {
   1794 		mode[0] = drvp[0].DMA_mode;
   1795 		mode[1] = drvp[1].PIO_mode;
   1796 		if (piix_isp_pio[mode[1]] != piix_isp_dma[mode[0]] ||
   1797 		    piix_rtc_pio[mode[1]] != piix_rtc_dma[mode[0]])
   1798 			mode[1] = drvp[1].PIO_mode = 0;
   1799 		goto ok;
   1800 	}
   1801 	if (drvp[1].drive_flags & DRIVE_DMA) {
   1802 		mode[1] = drvp[1].DMA_mode;
   1803 		mode[0] = drvp[0].PIO_mode;
   1804 		if (piix_isp_pio[mode[0]] != piix_isp_dma[mode[1]] ||
   1805 		    piix_rtc_pio[mode[0]] != piix_rtc_dma[mode[1]])
   1806 			mode[0] = drvp[0].PIO_mode = 0;
   1807 		goto ok;
   1808 	}
   1809 	/*
   1810 	 * If both drives are not DMA, takes the lower mode, unless
   1811 	 * one of them is PIO mode < 2
   1812 	 */
   1813 	if (drvp[0].PIO_mode < 2) {
   1814 		mode[0] = drvp[0].PIO_mode = 0;
   1815 		mode[1] = drvp[1].PIO_mode;
   1816 	} else if (drvp[1].PIO_mode < 2) {
   1817 		mode[1] = drvp[1].PIO_mode = 0;
   1818 		mode[0] = drvp[0].PIO_mode;
   1819 	} else {
   1820 		mode[0] = mode[1] =
   1821 		    min(drvp[1].PIO_mode, drvp[0].PIO_mode);
   1822 		drvp[0].PIO_mode = mode[0];
   1823 		drvp[1].PIO_mode = mode[1];
   1824 	}
   1825 ok:	/* The modes are setup */
   1826 	for (drive = 0; drive < 2; drive++) {
   1827 		if (drvp[drive].drive_flags & DRIVE_DMA) {
   1828 			idetim |= piix_setup_idetim_timings(
   1829 			    mode[drive], 1, chp->channel);
   1830 			goto end;
   1831 		}
   1832 	}
   1833 	/* If we are there, none of the drives are DMA */
   1834 	if (mode[0] >= 2)
   1835 		idetim |= piix_setup_idetim_timings(
   1836 		    mode[0], 0, chp->channel);
   1837 	else
   1838 		idetim |= piix_setup_idetim_timings(
   1839 		    mode[1], 0, chp->channel);
   1840 end:	/*
   1841 	 * timing mode is now set up in the controller. Enable
   1842 	 * it per-drive
   1843 	 */
   1844 	for (drive = 0; drive < 2; drive++) {
   1845 		/* If no drive, skip */
   1846 		if ((drvp[drive].drive_flags & DRIVE) == 0)
   1847 			continue;
   1848 		idetim |= piix_setup_idetim_drvs(&drvp[drive]);
   1849 		if (drvp[drive].drive_flags & DRIVE_DMA)
   1850 			idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
   1851 	}
   1852 	if (idedma_ctl != 0) {
   1853 		/* Add software bits in status register */
   1854 		bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   1855 		    IDEDMA_CTL + (IDEDMA_SCH_OFFSET * chp->channel),
   1856 		    idedma_ctl);
   1857 	}
   1858 	pci_conf_write(sc->sc_pc, sc->sc_tag, PIIX_IDETIM, idetim);
   1859 	pciide_print_modes(cp);
   1860 }
   1861 
   1862 void
   1863 piix3_4_setup_channel(chp)
   1864 	struct channel_softc *chp;
   1865 {
   1866 	struct ata_drive_datas *drvp;
   1867 	u_int32_t oidetim, idetim, sidetim, udmareg, ideconf, idedma_ctl;
   1868 	struct pciide_channel *cp = (struct pciide_channel*)chp;
   1869 	struct pciide_softc *sc = (struct pciide_softc *)cp->wdc_channel.wdc;
   1870 	int drive;
   1871 	int channel = chp->channel;
   1872 
   1873 	oidetim = pci_conf_read(sc->sc_pc, sc->sc_tag, PIIX_IDETIM);
   1874 	sidetim = pci_conf_read(sc->sc_pc, sc->sc_tag, PIIX_SIDETIM);
   1875 	udmareg = pci_conf_read(sc->sc_pc, sc->sc_tag, PIIX_UDMAREG);
   1876 	ideconf = pci_conf_read(sc->sc_pc, sc->sc_tag, PIIX_CONFIG);
   1877 	idetim = PIIX_IDETIM_CLEAR(oidetim, 0xffff, channel);
   1878 	sidetim &= ~(PIIX_SIDETIM_ISP_MASK(channel) |
   1879 	    PIIX_SIDETIM_RTC_MASK(channel));
   1880 
   1881 	idedma_ctl = 0;
   1882 	/* If channel disabled, no need to go further */
   1883 	if ((PIIX_IDETIM_READ(oidetim, channel) & PIIX_IDETIM_IDE) == 0)
   1884 		return;
   1885 	/* set up new idetim: Enable IDE registers decode */
   1886 	idetim = PIIX_IDETIM_SET(idetim, PIIX_IDETIM_IDE, channel);
   1887 
   1888 	/* setup DMA if needed */
   1889 	pciide_channel_dma_setup(cp);
   1890 
   1891 	for (drive = 0; drive < 2; drive++) {
   1892 		udmareg &= ~(PIIX_UDMACTL_DRV_EN(channel, drive) |
   1893 		    PIIX_UDMATIM_SET(0x3, channel, drive));
   1894 		drvp = &chp->ch_drive[drive];
   1895 		/* If no drive, skip */
   1896 		if ((drvp->drive_flags & DRIVE) == 0)
   1897 			continue;
   1898 		if (((drvp->drive_flags & DRIVE_DMA) == 0 &&
   1899 		    (drvp->drive_flags & DRIVE_UDMA) == 0))
   1900 			goto pio;
   1901 
   1902 		if (sc->sc_pp->ide_product == PCI_PRODUCT_INTEL_82801AA_IDE ||
   1903 		    sc->sc_pp->ide_product == PCI_PRODUCT_INTEL_82801AB_IDE ||
   1904 		    sc->sc_pp->ide_product == PCI_PRODUCT_INTEL_82801BA_IDE ||
   1905 		    sc->sc_pp->ide_product == PCI_PRODUCT_INTEL_82801BAM_IDE ||
   1906 		    sc->sc_pp->ide_product == PCI_PRODUCT_INTEL_82801CA_IDE_1 ||
   1907 		    sc->sc_pp->ide_product == PCI_PRODUCT_INTEL_82801CA_IDE_2 ||
   1908 		    sc->sc_pp->ide_product == PCI_PRODUCT_INTEL_82801DB_IDE) {
   1909 			ideconf |= PIIX_CONFIG_PINGPONG;
   1910 		}
   1911 		if (sc->sc_pp->ide_product == PCI_PRODUCT_INTEL_82801BA_IDE ||
   1912 		    sc->sc_pp->ide_product == PCI_PRODUCT_INTEL_82801BAM_IDE ||
   1913 		    sc->sc_pp->ide_product == PCI_PRODUCT_INTEL_82801CA_IDE_1 ||
   1914 		    sc->sc_pp->ide_product == PCI_PRODUCT_INTEL_82801CA_IDE_2 ||
   1915 		    sc->sc_pp->ide_product == PCI_PRODUCT_INTEL_82801DB_IDE) {
   1916 			/* setup Ultra/100 */
   1917 			if (drvp->UDMA_mode > 2 &&
   1918 			    (ideconf & PIIX_CONFIG_CR(channel, drive)) == 0)
   1919 				drvp->UDMA_mode = 2;
   1920 			if (drvp->UDMA_mode > 4) {
   1921 				ideconf |= PIIX_CONFIG_UDMA100(channel, drive);
   1922 			} else {
   1923 				ideconf &= ~PIIX_CONFIG_UDMA100(channel, drive);
   1924 				if (drvp->UDMA_mode > 2) {
   1925 					ideconf |= PIIX_CONFIG_UDMA66(channel,
   1926 					    drive);
   1927 				} else {
   1928 					ideconf &= ~PIIX_CONFIG_UDMA66(channel,
   1929 					    drive);
   1930 				}
   1931 			}
   1932 		}
   1933 		if (sc->sc_pp->ide_product == PCI_PRODUCT_INTEL_82801AA_IDE) {
   1934 			/* setup Ultra/66 */
   1935 			if (drvp->UDMA_mode > 2 &&
   1936 			    (ideconf & PIIX_CONFIG_CR(channel, drive)) == 0)
   1937 				drvp->UDMA_mode = 2;
   1938 			if (drvp->UDMA_mode > 2)
   1939 				ideconf |= PIIX_CONFIG_UDMA66(channel, drive);
   1940 			else
   1941 				ideconf &= ~PIIX_CONFIG_UDMA66(channel, drive);
   1942 		}
   1943 		if ((chp->wdc->cap & WDC_CAPABILITY_UDMA) &&
   1944 		    (drvp->drive_flags & DRIVE_UDMA)) {
   1945 			/* use Ultra/DMA */
   1946 			drvp->drive_flags &= ~DRIVE_DMA;
   1947 			udmareg |= PIIX_UDMACTL_DRV_EN( channel, drive);
   1948 			udmareg |= PIIX_UDMATIM_SET(
   1949 			    piix4_sct_udma[drvp->UDMA_mode], channel, drive);
   1950 		} else {
   1951 			/* use Multiword DMA */
   1952 			drvp->drive_flags &= ~DRIVE_UDMA;
   1953 			if (drive == 0) {
   1954 				idetim |= piix_setup_idetim_timings(
   1955 				    drvp->DMA_mode, 1, channel);
   1956 			} else {
   1957 				sidetim |= piix_setup_sidetim_timings(
   1958 					drvp->DMA_mode, 1, channel);
   1959 				idetim =PIIX_IDETIM_SET(idetim,
   1960 				    PIIX_IDETIM_SITRE, channel);
   1961 			}
   1962 		}
   1963 		idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
   1964 
   1965 pio:		/* use PIO mode */
   1966 		idetim |= piix_setup_idetim_drvs(drvp);
   1967 		if (drive == 0) {
   1968 			idetim |= piix_setup_idetim_timings(
   1969 			    drvp->PIO_mode, 0, channel);
   1970 		} else {
   1971 			sidetim |= piix_setup_sidetim_timings(
   1972 				drvp->PIO_mode, 0, channel);
   1973 			idetim =PIIX_IDETIM_SET(idetim,
   1974 			    PIIX_IDETIM_SITRE, channel);
   1975 		}
   1976 	}
   1977 	if (idedma_ctl != 0) {
   1978 		/* Add software bits in status register */
   1979 		bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   1980 		    IDEDMA_CTL + (IDEDMA_SCH_OFFSET * channel),
   1981 		    idedma_ctl);
   1982 	}
   1983 	pci_conf_write(sc->sc_pc, sc->sc_tag, PIIX_IDETIM, idetim);
   1984 	pci_conf_write(sc->sc_pc, sc->sc_tag, PIIX_SIDETIM, sidetim);
   1985 	pci_conf_write(sc->sc_pc, sc->sc_tag, PIIX_UDMAREG, udmareg);
   1986 	pci_conf_write(sc->sc_pc, sc->sc_tag, PIIX_CONFIG, ideconf);
   1987 	pciide_print_modes(cp);
   1988 }
   1989 
   1990 
   1991 /* setup ISP and RTC fields, based on mode */
   1992 static u_int32_t
   1993 piix_setup_idetim_timings(mode, dma, channel)
   1994 	u_int8_t mode;
   1995 	u_int8_t dma;
   1996 	u_int8_t channel;
   1997 {
   1998 
   1999 	if (dma)
   2000 		return PIIX_IDETIM_SET(0,
   2001 		    PIIX_IDETIM_ISP_SET(piix_isp_dma[mode]) |
   2002 		    PIIX_IDETIM_RTC_SET(piix_rtc_dma[mode]),
   2003 		    channel);
   2004 	else
   2005 		return PIIX_IDETIM_SET(0,
   2006 		    PIIX_IDETIM_ISP_SET(piix_isp_pio[mode]) |
   2007 		    PIIX_IDETIM_RTC_SET(piix_rtc_pio[mode]),
   2008 		    channel);
   2009 }
   2010 
   2011 /* setup DTE, PPE, IE and TIME field based on PIO mode */
   2012 static u_int32_t
   2013 piix_setup_idetim_drvs(drvp)
   2014 	struct ata_drive_datas *drvp;
   2015 {
   2016 	u_int32_t ret = 0;
   2017 	struct channel_softc *chp = drvp->chnl_softc;
   2018 	u_int8_t channel = chp->channel;
   2019 	u_int8_t drive = drvp->drive;
   2020 
   2021 	/*
   2022 	 * If drive is using UDMA, timings setups are independant
   2023 	 * So just check DMA and PIO here.
   2024 	 */
   2025 	if (drvp->drive_flags & DRIVE_DMA) {
   2026 		/* if mode = DMA mode 0, use compatible timings */
   2027 		if ((drvp->drive_flags & DRIVE_DMA) &&
   2028 		    drvp->DMA_mode == 0) {
   2029 			drvp->PIO_mode = 0;
   2030 			return ret;
   2031 		}
   2032 		ret = PIIX_IDETIM_SET(ret, PIIX_IDETIM_TIME(drive), channel);
   2033 		/*
   2034 		 * PIO and DMA timings are the same, use fast timings for PIO
   2035 		 * too, else use compat timings.
   2036 		 */
   2037 		if ((piix_isp_pio[drvp->PIO_mode] !=
   2038 		    piix_isp_dma[drvp->DMA_mode]) ||
   2039 		    (piix_rtc_pio[drvp->PIO_mode] !=
   2040 		    piix_rtc_dma[drvp->DMA_mode]))
   2041 			drvp->PIO_mode = 0;
   2042 		/* if PIO mode <= 2, use compat timings for PIO */
   2043 		if (drvp->PIO_mode <= 2) {
   2044 			ret = PIIX_IDETIM_SET(ret, PIIX_IDETIM_DTE(drive),
   2045 			    channel);
   2046 			return ret;
   2047 		}
   2048 	}
   2049 
   2050 	/*
   2051 	 * Now setup PIO modes. If mode < 2, use compat timings.
   2052 	 * Else enable fast timings. Enable IORDY and prefetch/post
   2053 	 * if PIO mode >= 3.
   2054 	 */
   2055 
   2056 	if (drvp->PIO_mode < 2)
   2057 		return ret;
   2058 
   2059 	ret = PIIX_IDETIM_SET(ret, PIIX_IDETIM_TIME(drive), channel);
   2060 	if (drvp->PIO_mode >= 3) {
   2061 		ret = PIIX_IDETIM_SET(ret, PIIX_IDETIM_IE(drive), channel);
   2062 		ret = PIIX_IDETIM_SET(ret, PIIX_IDETIM_PPE(drive), channel);
   2063 	}
   2064 	return ret;
   2065 }
   2066 
   2067 /* setup values in SIDETIM registers, based on mode */
   2068 static u_int32_t
   2069 piix_setup_sidetim_timings(mode, dma, channel)
   2070 	u_int8_t mode;
   2071 	u_int8_t dma;
   2072 	u_int8_t channel;
   2073 {
   2074 	if (dma)
   2075 		return PIIX_SIDETIM_ISP_SET(piix_isp_dma[mode], channel) |
   2076 		    PIIX_SIDETIM_RTC_SET(piix_rtc_dma[mode], channel);
   2077 	else
   2078 		return PIIX_SIDETIM_ISP_SET(piix_isp_pio[mode], channel) |
   2079 		    PIIX_SIDETIM_RTC_SET(piix_rtc_pio[mode], channel);
   2080 }
   2081 
   2082 void
   2083 amd7x6_chip_map(sc, pa)
   2084 	struct pciide_softc *sc;
   2085 	struct pci_attach_args *pa;
   2086 {
   2087 	struct pciide_channel *cp;
   2088 	pcireg_t interface = PCI_INTERFACE(pa->pa_class);
   2089 	int channel;
   2090 	pcireg_t chanenable;
   2091 	bus_size_t cmdsize, ctlsize;
   2092 
   2093 	if (pciide_chipen(sc, pa) == 0)
   2094 		return;
   2095 	printf("%s: bus-master DMA support present",
   2096 	    sc->sc_wdcdev.sc_dev.dv_xname);
   2097 	pciide_mapreg_dma(sc, pa);
   2098 	printf("\n");
   2099 	sc->sc_wdcdev.cap = WDC_CAPABILITY_DATA16 | WDC_CAPABILITY_DATA32 |
   2100 	    WDC_CAPABILITY_MODE;
   2101 	if (sc->sc_dma_ok) {
   2102 		sc->sc_wdcdev.cap |= WDC_CAPABILITY_DMA | WDC_CAPABILITY_UDMA;
   2103 		sc->sc_wdcdev.cap |= WDC_CAPABILITY_IRQACK;
   2104 		sc->sc_wdcdev.irqack = pciide_irqack;
   2105 	}
   2106 	sc->sc_wdcdev.PIO_cap = 4;
   2107 	sc->sc_wdcdev.DMA_cap = 2;
   2108 
   2109 	switch (sc->sc_pci_vendor) {
   2110 	case PCI_VENDOR_AMD:
   2111 		switch (sc->sc_pp->ide_product) {
   2112 		case PCI_PRODUCT_AMD_PBC766_IDE:
   2113 		case PCI_PRODUCT_AMD_PBC768_IDE:
   2114 		case PCI_PRODUCT_AMD_PBC8111_IDE:
   2115 			sc->sc_wdcdev.UDMA_cap = 5;
   2116 			break;
   2117 		default:
   2118 			sc->sc_wdcdev.UDMA_cap = 4;
   2119 		}
   2120 		sc->sc_amd_regbase = AMD7X6_AMD_REGBASE;
   2121 		break;
   2122 
   2123 	case PCI_VENDOR_NVIDIA:
   2124 		switch (sc->sc_pp->ide_product) {
   2125 		case PCI_PRODUCT_NVIDIA_NFORCE_ATA100:
   2126 			sc->sc_wdcdev.UDMA_cap = 5;
   2127 			break;
   2128 		case PCI_PRODUCT_NVIDIA_NFORCE2_ATA133:
   2129 			sc->sc_wdcdev.UDMA_cap = 6;
   2130 			break;
   2131 		}
   2132 		sc->sc_amd_regbase = AMD7X6_NVIDIA_REGBASE;
   2133 		break;
   2134 
   2135 	default:
   2136 		panic("amd7x6_chip_map: unknown vendor");
   2137 	}
   2138 	sc->sc_wdcdev.set_modes = amd7x6_setup_channel;
   2139 	sc->sc_wdcdev.channels = sc->wdc_chanarray;
   2140 	sc->sc_wdcdev.nchannels = PCIIDE_NUM_CHANNELS;
   2141 	chanenable = pci_conf_read(sc->sc_pc, sc->sc_tag,
   2142 	    AMD7X6_CHANSTATUS_EN(sc));
   2143 
   2144 	WDCDEBUG_PRINT(("amd7x6_chip_map: Channel enable=0x%x\n", chanenable),
   2145 	    DEBUG_PROBE);
   2146 	for (channel = 0; channel < sc->sc_wdcdev.nchannels; channel++) {
   2147 		cp = &sc->pciide_channels[channel];
   2148 		if (pciide_chansetup(sc, channel, interface) == 0)
   2149 			continue;
   2150 
   2151 		if ((chanenable & AMD7X6_CHAN_EN(channel)) == 0) {
   2152 			printf("%s: %s channel ignored (disabled)\n",
   2153 			    sc->sc_wdcdev.sc_dev.dv_xname, cp->name);
   2154 			continue;
   2155 		}
   2156 		pciide_mapchan(pa, cp, interface, &cmdsize, &ctlsize,
   2157 		    pciide_pci_intr);
   2158 
   2159 		if (pciide_chan_candisable(cp))
   2160 			chanenable &= ~AMD7X6_CHAN_EN(channel);
   2161 		pciide_map_compat_intr(pa, cp, channel, interface);
   2162 		if (cp->hw_ok == 0)
   2163 			continue;
   2164 
   2165 		amd7x6_setup_channel(&cp->wdc_channel);
   2166 	}
   2167 	pci_conf_write(sc->sc_pc, sc->sc_tag, AMD7X6_CHANSTATUS_EN(sc),
   2168 	    chanenable);
   2169 	return;
   2170 }
   2171 
   2172 void
   2173 amd7x6_setup_channel(chp)
   2174 	struct channel_softc *chp;
   2175 {
   2176 	u_int32_t udmatim_reg, datatim_reg;
   2177 	u_int8_t idedma_ctl;
   2178 	int mode, drive;
   2179 	struct ata_drive_datas *drvp;
   2180 	struct pciide_channel *cp = (struct pciide_channel*)chp;
   2181 	struct pciide_softc *sc = (struct pciide_softc *)cp->wdc_channel.wdc;
   2182 #ifndef PCIIDE_AMD756_ENABLEDMA
   2183 	int rev = PCI_REVISION(
   2184 	    pci_conf_read(sc->sc_pc, sc->sc_tag, PCI_CLASS_REG));
   2185 #endif
   2186 
   2187 	idedma_ctl = 0;
   2188 	datatim_reg = pci_conf_read(sc->sc_pc, sc->sc_tag, AMD7X6_DATATIM(sc));
   2189 	udmatim_reg = pci_conf_read(sc->sc_pc, sc->sc_tag, AMD7X6_UDMA(sc));
   2190 	datatim_reg &= ~AMD7X6_DATATIM_MASK(chp->channel);
   2191 	udmatim_reg &= ~AMD7X6_UDMA_MASK(chp->channel);
   2192 
   2193 	/* setup DMA if needed */
   2194 	pciide_channel_dma_setup(cp);
   2195 
   2196 	for (drive = 0; drive < 2; drive++) {
   2197 		drvp = &chp->ch_drive[drive];
   2198 		/* If no drive, skip */
   2199 		if ((drvp->drive_flags & DRIVE) == 0)
   2200 			continue;
   2201 		/* add timing values, setup DMA if needed */
   2202 		if (((drvp->drive_flags & DRIVE_DMA) == 0 &&
   2203 		    (drvp->drive_flags & DRIVE_UDMA) == 0)) {
   2204 			mode = drvp->PIO_mode;
   2205 			goto pio;
   2206 		}
   2207 		if ((chp->wdc->cap & WDC_CAPABILITY_UDMA) &&
   2208 		    (drvp->drive_flags & DRIVE_UDMA)) {
   2209 			/* use Ultra/DMA */
   2210 			drvp->drive_flags &= ~DRIVE_DMA;
   2211 			udmatim_reg |= AMD7X6_UDMA_EN(chp->channel, drive) |
   2212 			    AMD7X6_UDMA_EN_MTH(chp->channel, drive) |
   2213 			    AMD7X6_UDMA_TIME(chp->channel, drive,
   2214 				amd7x6_udma_tim[drvp->UDMA_mode]);
   2215 			/* can use PIO timings, MW DMA unused */
   2216 			mode = drvp->PIO_mode;
   2217 		} else {
   2218 			/* use Multiword DMA, but only if revision is OK */
   2219 			drvp->drive_flags &= ~DRIVE_UDMA;
   2220 #ifndef PCIIDE_AMD756_ENABLEDMA
   2221 			/*
   2222 			 * The workaround doesn't seem to be necessary
   2223 			 * with all drives, so it can be disabled by
   2224 			 * PCIIDE_AMD756_ENABLEDMA. It causes a hard hang if
   2225 			 * triggered.
   2226 			 */
   2227 			if (sc->sc_pci_vendor == PCI_VENDOR_AMD &&
   2228 			    sc->sc_pp->ide_product ==
   2229 			      PCI_PRODUCT_AMD_PBC756_IDE &&
   2230 			    AMD756_CHIPREV_DISABLEDMA(rev)) {
   2231 				printf("%s:%d:%d: multi-word DMA disabled due "
   2232 				    "to chip revision\n",
   2233 				    sc->sc_wdcdev.sc_dev.dv_xname,
   2234 				    chp->channel, drive);
   2235 				mode = drvp->PIO_mode;
   2236 				drvp->drive_flags &= ~DRIVE_DMA;
   2237 				goto pio;
   2238 			}
   2239 #endif
   2240 			/* mode = min(pio, dma+2) */
   2241 			if (drvp->PIO_mode <= (drvp->DMA_mode +2))
   2242 				mode = drvp->PIO_mode;
   2243 			else
   2244 				mode = drvp->DMA_mode + 2;
   2245 		}
   2246 		idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
   2247 
   2248 pio:		/* setup PIO mode */
   2249 		if (mode <= 2) {
   2250 			drvp->DMA_mode = 0;
   2251 			drvp->PIO_mode = 0;
   2252 			mode = 0;
   2253 		} else {
   2254 			drvp->PIO_mode = mode;
   2255 			drvp->DMA_mode = mode - 2;
   2256 		}
   2257 		datatim_reg |=
   2258 		    AMD7X6_DATATIM_PULSE(chp->channel, drive,
   2259 			amd7x6_pio_set[mode]) |
   2260 		    AMD7X6_DATATIM_RECOV(chp->channel, drive,
   2261 			amd7x6_pio_rec[mode]);
   2262 	}
   2263 	if (idedma_ctl != 0) {
   2264 		/* Add software bits in status register */
   2265 		bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   2266 		    IDEDMA_CTL + (IDEDMA_SCH_OFFSET * chp->channel),
   2267 		    idedma_ctl);
   2268 	}
   2269 	pciide_print_modes(cp);
   2270 	pci_conf_write(sc->sc_pc, sc->sc_tag, AMD7X6_DATATIM(sc), datatim_reg);
   2271 	pci_conf_write(sc->sc_pc, sc->sc_tag, AMD7X6_UDMA(sc), udmatim_reg);
   2272 }
   2273 
   2274 void
   2275 apollo_chip_map(sc, pa)
   2276 	struct pciide_softc *sc;
   2277 	struct pci_attach_args *pa;
   2278 {
   2279 	struct pciide_channel *cp;
   2280 	pcireg_t interface = PCI_INTERFACE(pa->pa_class);
   2281 	int channel;
   2282 	u_int32_t ideconf;
   2283 	bus_size_t cmdsize, ctlsize;
   2284 	pcitag_t pcib_tag;
   2285 	pcireg_t pcib_id, pcib_class;
   2286 
   2287 	if (pciide_chipen(sc, pa) == 0)
   2288 		return;
   2289 	/* get a PCI tag for the ISA bridge (function 0 of the same device) */
   2290 	pcib_tag = pci_make_tag(pa->pa_pc, pa->pa_bus, pa->pa_device, 0);
   2291 	/* and read ID and rev of the ISA bridge */
   2292 	pcib_id = pci_conf_read(sc->sc_pc, pcib_tag, PCI_ID_REG);
   2293 	pcib_class = pci_conf_read(sc->sc_pc, pcib_tag, PCI_CLASS_REG);
   2294 	printf(": VIA Technologies ");
   2295 	switch (PCI_PRODUCT(pcib_id)) {
   2296 	case PCI_PRODUCT_VIATECH_VT82C586_ISA:
   2297 		printf("VT82C586 (Apollo VP) ");
   2298 		if(PCI_REVISION(pcib_class) >= 0x02) {
   2299 			printf("ATA33 controller\n");
   2300 			sc->sc_wdcdev.UDMA_cap = 2;
   2301 		} else {
   2302 			printf("controller\n");
   2303 			sc->sc_wdcdev.UDMA_cap = 0;
   2304 		}
   2305 		break;
   2306 	case PCI_PRODUCT_VIATECH_VT82C596A:
   2307 		printf("VT82C596A (Apollo Pro) ");
   2308 		if (PCI_REVISION(pcib_class) >= 0x12) {
   2309 			printf("ATA66 controller\n");
   2310 			sc->sc_wdcdev.UDMA_cap = 4;
   2311 		} else {
   2312 			printf("ATA33 controller\n");
   2313 			sc->sc_wdcdev.UDMA_cap = 2;
   2314 		}
   2315 		break;
   2316 	case PCI_PRODUCT_VIATECH_VT82C686A_ISA:
   2317 		printf("VT82C686A (Apollo KX133) ");
   2318 		if (PCI_REVISION(pcib_class) >= 0x40) {
   2319 			printf("ATA100 controller\n");
   2320 			sc->sc_wdcdev.UDMA_cap = 5;
   2321 		} else {
   2322 			printf("ATA66 controller\n");
   2323 			sc->sc_wdcdev.UDMA_cap = 4;
   2324 		}
   2325 		break;
   2326 	case PCI_PRODUCT_VIATECH_VT8231:
   2327 		printf("VT8231 ATA100 controller\n");
   2328 		sc->sc_wdcdev.UDMA_cap = 5;
   2329 		break;
   2330 	case PCI_PRODUCT_VIATECH_VT8233:
   2331 		printf("VT8233 ATA100 controller\n");
   2332 		sc->sc_wdcdev.UDMA_cap = 5;
   2333 		break;
   2334 	case PCI_PRODUCT_VIATECH_VT8233A:
   2335 		printf("VT8233A ATA133 controller\n");
   2336 		sc->sc_wdcdev.UDMA_cap = 6;
   2337 		break;
   2338 	case PCI_PRODUCT_VIATECH_VT8235:
   2339 		printf("VT8235 ATA133 controller\n");
   2340 		sc->sc_wdcdev.UDMA_cap = 6;
   2341 		break;
   2342 	default:
   2343 		printf("unknown ATA controller\n");
   2344 		sc->sc_wdcdev.UDMA_cap = 0;
   2345 	}
   2346 
   2347 	printf("%s: bus-master DMA support present",
   2348 	    sc->sc_wdcdev.sc_dev.dv_xname);
   2349 	pciide_mapreg_dma(sc, pa);
   2350 	printf("\n");
   2351 	sc->sc_wdcdev.cap = WDC_CAPABILITY_DATA16 | WDC_CAPABILITY_DATA32 |
   2352 	    WDC_CAPABILITY_MODE;
   2353 	if (sc->sc_dma_ok) {
   2354 		sc->sc_wdcdev.cap |= WDC_CAPABILITY_DMA | WDC_CAPABILITY_IRQACK;
   2355 		sc->sc_wdcdev.irqack = pciide_irqack;
   2356 		if (sc->sc_wdcdev.UDMA_cap > 0)
   2357 			sc->sc_wdcdev.cap |= WDC_CAPABILITY_UDMA;
   2358 	}
   2359 	sc->sc_wdcdev.PIO_cap = 4;
   2360 	sc->sc_wdcdev.DMA_cap = 2;
   2361 	sc->sc_wdcdev.set_modes = apollo_setup_channel;
   2362 	sc->sc_wdcdev.channels = sc->wdc_chanarray;
   2363 	sc->sc_wdcdev.nchannels = PCIIDE_NUM_CHANNELS;
   2364 
   2365 	WDCDEBUG_PRINT(("apollo_chip_map: old APO_IDECONF=0x%x, "
   2366 	    "APO_CTLMISC=0x%x, APO_DATATIM=0x%x, APO_UDMA=0x%x\n",
   2367 	    pci_conf_read(sc->sc_pc, sc->sc_tag, APO_IDECONF),
   2368 	    pci_conf_read(sc->sc_pc, sc->sc_tag, APO_CTLMISC),
   2369 	    pci_conf_read(sc->sc_pc, sc->sc_tag, APO_DATATIM),
   2370 	    pci_conf_read(sc->sc_pc, sc->sc_tag, APO_UDMA)),
   2371 	    DEBUG_PROBE);
   2372 
   2373 	for (channel = 0; channel < sc->sc_wdcdev.nchannels; channel++) {
   2374 		cp = &sc->pciide_channels[channel];
   2375 		if (pciide_chansetup(sc, channel, interface) == 0)
   2376 			continue;
   2377 
   2378 		ideconf = pci_conf_read(sc->sc_pc, sc->sc_tag, APO_IDECONF);
   2379 		if ((ideconf & APO_IDECONF_EN(channel)) == 0) {
   2380 			printf("%s: %s channel ignored (disabled)\n",
   2381 			    sc->sc_wdcdev.sc_dev.dv_xname, cp->name);
   2382 			continue;
   2383 		}
   2384 		pciide_mapchan(pa, cp, interface, &cmdsize, &ctlsize,
   2385 		    pciide_pci_intr);
   2386 		if (cp->hw_ok == 0)
   2387 			continue;
   2388 		if (pciide_chan_candisable(cp)) {
   2389 			ideconf &= ~APO_IDECONF_EN(channel);
   2390 			pci_conf_write(sc->sc_pc, sc->sc_tag, APO_IDECONF,
   2391 			    ideconf);
   2392 		}
   2393 		pciide_map_compat_intr(pa, cp, channel, interface);
   2394 
   2395 		if (cp->hw_ok == 0)
   2396 			continue;
   2397 		apollo_setup_channel(&sc->pciide_channels[channel].wdc_channel);
   2398 	}
   2399 	WDCDEBUG_PRINT(("apollo_chip_map: APO_DATATIM=0x%x, APO_UDMA=0x%x\n",
   2400 	    pci_conf_read(sc->sc_pc, sc->sc_tag, APO_DATATIM),
   2401 	    pci_conf_read(sc->sc_pc, sc->sc_tag, APO_UDMA)), DEBUG_PROBE);
   2402 }
   2403 
   2404 void
   2405 apollo_setup_channel(chp)
   2406 	struct channel_softc *chp;
   2407 {
   2408 	u_int32_t udmatim_reg, datatim_reg;
   2409 	u_int8_t idedma_ctl;
   2410 	int mode, drive;
   2411 	struct ata_drive_datas *drvp;
   2412 	struct pciide_channel *cp = (struct pciide_channel*)chp;
   2413 	struct pciide_softc *sc = (struct pciide_softc *)cp->wdc_channel.wdc;
   2414 
   2415 	idedma_ctl = 0;
   2416 	datatim_reg = pci_conf_read(sc->sc_pc, sc->sc_tag, APO_DATATIM);
   2417 	udmatim_reg = pci_conf_read(sc->sc_pc, sc->sc_tag, APO_UDMA);
   2418 	datatim_reg &= ~APO_DATATIM_MASK(chp->channel);
   2419 	udmatim_reg &= ~APO_UDMA_MASK(chp->channel);
   2420 
   2421 	/* setup DMA if needed */
   2422 	pciide_channel_dma_setup(cp);
   2423 
   2424 	for (drive = 0; drive < 2; drive++) {
   2425 		drvp = &chp->ch_drive[drive];
   2426 		/* If no drive, skip */
   2427 		if ((drvp->drive_flags & DRIVE) == 0)
   2428 			continue;
   2429 		/* add timing values, setup DMA if needed */
   2430 		if (((drvp->drive_flags & DRIVE_DMA) == 0 &&
   2431 		    (drvp->drive_flags & DRIVE_UDMA) == 0)) {
   2432 			mode = drvp->PIO_mode;
   2433 			goto pio;
   2434 		}
   2435 		if ((chp->wdc->cap & WDC_CAPABILITY_UDMA) &&
   2436 		    (drvp->drive_flags & DRIVE_UDMA)) {
   2437 			/* use Ultra/DMA */
   2438 			drvp->drive_flags &= ~DRIVE_DMA;
   2439 			udmatim_reg |= APO_UDMA_EN(chp->channel, drive) |
   2440 			    APO_UDMA_EN_MTH(chp->channel, drive);
   2441 			if (sc->sc_wdcdev.UDMA_cap == 6) {
   2442 				/* 8233a */
   2443 				udmatim_reg |= APO_UDMA_TIME(chp->channel,
   2444 				    drive, apollo_udma133_tim[drvp->UDMA_mode]);
   2445 			} else if (sc->sc_wdcdev.UDMA_cap == 5) {
   2446 				/* 686b */
   2447 				udmatim_reg |= APO_UDMA_TIME(chp->channel,
   2448 				    drive, apollo_udma100_tim[drvp->UDMA_mode]);
   2449 			} else if (sc->sc_wdcdev.UDMA_cap == 4) {
   2450 				/* 596b or 686a */
   2451 				udmatim_reg |= APO_UDMA_CLK66(chp->channel);
   2452 				udmatim_reg |= APO_UDMA_TIME(chp->channel,
   2453 				    drive, apollo_udma66_tim[drvp->UDMA_mode]);
   2454 			} else {
   2455 				/* 596a or 586b */
   2456 				udmatim_reg |= APO_UDMA_TIME(chp->channel,
   2457 				    drive, apollo_udma33_tim[drvp->UDMA_mode]);
   2458 			}
   2459 			/* can use PIO timings, MW DMA unused */
   2460 			mode = drvp->PIO_mode;
   2461 		} else {
   2462 			/* use Multiword DMA */
   2463 			drvp->drive_flags &= ~DRIVE_UDMA;
   2464 			/* mode = min(pio, dma+2) */
   2465 			if (drvp->PIO_mode <= (drvp->DMA_mode +2))
   2466 				mode = drvp->PIO_mode;
   2467 			else
   2468 				mode = drvp->DMA_mode + 2;
   2469 		}
   2470 		idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
   2471 
   2472 pio:		/* setup PIO mode */
   2473 		if (mode <= 2) {
   2474 			drvp->DMA_mode = 0;
   2475 			drvp->PIO_mode = 0;
   2476 			mode = 0;
   2477 		} else {
   2478 			drvp->PIO_mode = mode;
   2479 			drvp->DMA_mode = mode - 2;
   2480 		}
   2481 		datatim_reg |=
   2482 		    APO_DATATIM_PULSE(chp->channel, drive,
   2483 			apollo_pio_set[mode]) |
   2484 		    APO_DATATIM_RECOV(chp->channel, drive,
   2485 			apollo_pio_rec[mode]);
   2486 	}
   2487 	if (idedma_ctl != 0) {
   2488 		/* Add software bits in status register */
   2489 		bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   2490 		    IDEDMA_CTL + (IDEDMA_SCH_OFFSET * chp->channel),
   2491 		    idedma_ctl);
   2492 	}
   2493 	pciide_print_modes(cp);
   2494 	pci_conf_write(sc->sc_pc, sc->sc_tag, APO_DATATIM, datatim_reg);
   2495 	pci_conf_write(sc->sc_pc, sc->sc_tag, APO_UDMA, udmatim_reg);
   2496 }
   2497 
   2498 void
   2499 cmd_channel_map(pa, sc, channel)
   2500 	struct pci_attach_args *pa;
   2501 	struct pciide_softc *sc;
   2502 	int channel;
   2503 {
   2504 	struct pciide_channel *cp = &sc->pciide_channels[channel];
   2505 	bus_size_t cmdsize, ctlsize;
   2506 	u_int8_t ctrl = pciide_pci_read(sc->sc_pc, sc->sc_tag, CMD_CTRL);
   2507 	int interface, one_channel;
   2508 
   2509 	/*
   2510 	 * The 0648/0649 can be told to identify as a RAID controller.
   2511 	 * In this case, we have to fake interface
   2512 	 */
   2513 	if (PCI_SUBCLASS(pa->pa_class) != PCI_SUBCLASS_MASS_STORAGE_IDE) {
   2514 		interface = PCIIDE_INTERFACE_SETTABLE(0) |
   2515 		    PCIIDE_INTERFACE_SETTABLE(1);
   2516 		if (pciide_pci_read(pa->pa_pc, pa->pa_tag, CMD_CONF) &
   2517 		    CMD_CONF_DSA1)
   2518 			interface |= PCIIDE_INTERFACE_PCI(0) |
   2519 			    PCIIDE_INTERFACE_PCI(1);
   2520 	} else {
   2521 		interface = PCI_INTERFACE(pa->pa_class);
   2522 	}
   2523 
   2524 	sc->wdc_chanarray[channel] = &cp->wdc_channel;
   2525 	cp->name = PCIIDE_CHANNEL_NAME(channel);
   2526 	cp->wdc_channel.channel = channel;
   2527 	cp->wdc_channel.wdc = &sc->sc_wdcdev;
   2528 
   2529 	/*
   2530 	 * Older CMD64X doesn't have independant channels
   2531 	 */
   2532 	switch (sc->sc_pp->ide_product) {
   2533 	case PCI_PRODUCT_CMDTECH_649:
   2534 		one_channel = 0;
   2535 		break;
   2536 	default:
   2537 		one_channel = 1;
   2538 		break;
   2539 	}
   2540 
   2541 	if (channel > 0 && one_channel) {
   2542 		cp->wdc_channel.ch_queue =
   2543 		    sc->pciide_channels[0].wdc_channel.ch_queue;
   2544 	} else {
   2545 		cp->wdc_channel.ch_queue =
   2546 		    malloc(sizeof(struct channel_queue), M_DEVBUF, M_NOWAIT);
   2547 	}
   2548 	if (cp->wdc_channel.ch_queue == NULL) {
   2549 		printf("%s %s channel: "
   2550 		    "can't allocate memory for command queue",
   2551 		    sc->sc_wdcdev.sc_dev.dv_xname, cp->name);
   2552 		    return;
   2553 	}
   2554 
   2555 	printf("%s: %s channel %s to %s mode\n",
   2556 	    sc->sc_wdcdev.sc_dev.dv_xname, cp->name,
   2557 	    (interface & PCIIDE_INTERFACE_SETTABLE(channel)) ?
   2558 	    "configured" : "wired",
   2559 	    (interface & PCIIDE_INTERFACE_PCI(channel)) ?
   2560 	    "native-PCI" : "compatibility");
   2561 
   2562 	/*
   2563 	 * with a CMD PCI64x, if we get here, the first channel is enabled:
   2564 	 * there's no way to disable the first channel without disabling
   2565 	 * the whole device
   2566 	 */
   2567 	if (channel != 0 && (ctrl & CMD_CTRL_2PORT) == 0) {
   2568 		printf("%s: %s channel ignored (disabled)\n",
   2569 		    sc->sc_wdcdev.sc_dev.dv_xname, cp->name);
   2570 		return;
   2571 	}
   2572 
   2573 	pciide_mapchan(pa, cp, interface, &cmdsize, &ctlsize, cmd_pci_intr);
   2574 	if (cp->hw_ok == 0)
   2575 		return;
   2576 	if (channel == 1) {
   2577 		if (pciide_chan_candisable(cp)) {
   2578 			ctrl &= ~CMD_CTRL_2PORT;
   2579 			pciide_pci_write(pa->pa_pc, pa->pa_tag,
   2580 			    CMD_CTRL, ctrl);
   2581 		}
   2582 	}
   2583 	pciide_map_compat_intr(pa, cp, channel, interface);
   2584 }
   2585 
   2586 int
   2587 cmd_pci_intr(arg)
   2588 	void *arg;
   2589 {
   2590 	struct pciide_softc *sc = arg;
   2591 	struct pciide_channel *cp;
   2592 	struct channel_softc *wdc_cp;
   2593 	int i, rv, crv;
   2594 	u_int32_t priirq, secirq;
   2595 
   2596 	rv = 0;
   2597 	priirq = pciide_pci_read(sc->sc_pc, sc->sc_tag, CMD_CONF);
   2598 	secirq = pciide_pci_read(sc->sc_pc, sc->sc_tag, CMD_ARTTIM23);
   2599 	for (i = 0; i < sc->sc_wdcdev.nchannels; i++) {
   2600 		cp = &sc->pciide_channels[i];
   2601 		wdc_cp = &cp->wdc_channel;
   2602 		/* If a compat channel skip. */
   2603 		if (cp->compat)
   2604 			continue;
   2605 		if ((i == 0 && (priirq & CMD_CONF_DRV0_INTR)) ||
   2606 		    (i == 1 && (secirq & CMD_ARTTIM23_IRQ))) {
   2607 			crv = wdcintr(wdc_cp);
   2608 			if (crv == 0)
   2609 				printf("%s:%d: bogus intr\n",
   2610 				    sc->sc_wdcdev.sc_dev.dv_xname, i);
   2611 			else
   2612 				rv = 1;
   2613 		}
   2614 	}
   2615 	return rv;
   2616 }
   2617 
   2618 void
   2619 cmd_chip_map(sc, pa)
   2620 	struct pciide_softc *sc;
   2621 	struct pci_attach_args *pa;
   2622 {
   2623 	int channel;
   2624 
   2625 	/*
   2626 	 * For a CMD PCI064x, the use of PCI_COMMAND_IO_ENABLE
   2627 	 * and base adresses registers can be disabled at
   2628 	 * hardware level. In this case, the device is wired
   2629 	 * in compat mode and its first channel is always enabled,
   2630 	 * but we can't rely on PCI_COMMAND_IO_ENABLE.
   2631 	 * In fact, it seems that the first channel of the CMD PCI0640
   2632 	 * can't be disabled.
   2633 	 */
   2634 
   2635 #ifdef PCIIDE_CMD064x_DISABLE
   2636 	if (pciide_chipen(sc, pa) == 0)
   2637 		return;
   2638 #endif
   2639 
   2640 	printf("%s: hardware does not support DMA\n",
   2641 	    sc->sc_wdcdev.sc_dev.dv_xname);
   2642 	sc->sc_dma_ok = 0;
   2643 
   2644 	sc->sc_wdcdev.channels = sc->wdc_chanarray;
   2645 	sc->sc_wdcdev.nchannels = PCIIDE_NUM_CHANNELS;
   2646 	sc->sc_wdcdev.cap = WDC_CAPABILITY_DATA16;
   2647 
   2648 	for (channel = 0; channel < sc->sc_wdcdev.nchannels; channel++) {
   2649 		cmd_channel_map(pa, sc, channel);
   2650 	}
   2651 }
   2652 
   2653 void
   2654 cmd0643_9_chip_map(sc, pa)
   2655 	struct pciide_softc *sc;
   2656 	struct pci_attach_args *pa;
   2657 {
   2658 	struct pciide_channel *cp;
   2659 	int channel;
   2660 	pcireg_t rev = PCI_REVISION(pa->pa_class);
   2661 
   2662 	/*
   2663 	 * For a CMD PCI064x, the use of PCI_COMMAND_IO_ENABLE
   2664 	 * and base adresses registers can be disabled at
   2665 	 * hardware level. In this case, the device is wired
   2666 	 * in compat mode and its first channel is always enabled,
   2667 	 * but we can't rely on PCI_COMMAND_IO_ENABLE.
   2668 	 * In fact, it seems that the first channel of the CMD PCI0640
   2669 	 * can't be disabled.
   2670 	 */
   2671 
   2672 #ifdef PCIIDE_CMD064x_DISABLE
   2673 	if (pciide_chipen(sc, pa) == 0)
   2674 		return;
   2675 #endif
   2676 	printf("%s: bus-master DMA support present",
   2677 	    sc->sc_wdcdev.sc_dev.dv_xname);
   2678 	pciide_mapreg_dma(sc, pa);
   2679 	printf("\n");
   2680 	sc->sc_wdcdev.cap = WDC_CAPABILITY_DATA16 | WDC_CAPABILITY_DATA32 |
   2681 	    WDC_CAPABILITY_MODE;
   2682 	if (sc->sc_dma_ok) {
   2683 		sc->sc_wdcdev.cap |= WDC_CAPABILITY_DMA | WDC_CAPABILITY_IRQACK;
   2684 		switch (sc->sc_pp->ide_product) {
   2685 		case PCI_PRODUCT_CMDTECH_649:
   2686 			sc->sc_wdcdev.cap |= WDC_CAPABILITY_UDMA;
   2687 			sc->sc_wdcdev.UDMA_cap = 5;
   2688 			sc->sc_wdcdev.irqack = cmd646_9_irqack;
   2689 			break;
   2690 		case PCI_PRODUCT_CMDTECH_648:
   2691 			sc->sc_wdcdev.cap |= WDC_CAPABILITY_UDMA;
   2692 			sc->sc_wdcdev.UDMA_cap = 4;
   2693 			sc->sc_wdcdev.irqack = cmd646_9_irqack;
   2694 			break;
   2695 		case PCI_PRODUCT_CMDTECH_646:
   2696 			if (rev >= CMD0646U2_REV) {
   2697 				sc->sc_wdcdev.cap |= WDC_CAPABILITY_UDMA;
   2698 				sc->sc_wdcdev.UDMA_cap = 2;
   2699 			} else if (rev >= CMD0646U_REV) {
   2700 			/*
   2701 			 * Linux's driver claims that the 646U is broken
   2702 			 * with UDMA. Only enable it if we know what we're
   2703 			 * doing
   2704 			 */
   2705 #ifdef PCIIDE_CMD0646U_ENABLEUDMA
   2706 				sc->sc_wdcdev.cap |= WDC_CAPABILITY_UDMA;
   2707 				sc->sc_wdcdev.UDMA_cap = 2;
   2708 #endif
   2709 				/* explicitly disable UDMA */
   2710 				pciide_pci_write(sc->sc_pc, sc->sc_tag,
   2711 				    CMD_UDMATIM(0), 0);
   2712 				pciide_pci_write(sc->sc_pc, sc->sc_tag,
   2713 				    CMD_UDMATIM(1), 0);
   2714 			}
   2715 			sc->sc_wdcdev.irqack = cmd646_9_irqack;
   2716 			break;
   2717 		default:
   2718 			sc->sc_wdcdev.irqack = pciide_irqack;
   2719 		}
   2720 	}
   2721 
   2722 	sc->sc_wdcdev.channels = sc->wdc_chanarray;
   2723 	sc->sc_wdcdev.nchannels = PCIIDE_NUM_CHANNELS;
   2724 	sc->sc_wdcdev.PIO_cap = 4;
   2725 	sc->sc_wdcdev.DMA_cap = 2;
   2726 	sc->sc_wdcdev.set_modes = cmd0643_9_setup_channel;
   2727 
   2728 	WDCDEBUG_PRINT(("cmd0643_9_chip_map: old timings reg 0x%x 0x%x\n",
   2729 		pci_conf_read(sc->sc_pc, sc->sc_tag, 0x54),
   2730 		pci_conf_read(sc->sc_pc, sc->sc_tag, 0x58)),
   2731 		DEBUG_PROBE);
   2732 
   2733 	for (channel = 0; channel < sc->sc_wdcdev.nchannels; channel++) {
   2734 		cp = &sc->pciide_channels[channel];
   2735 		cmd_channel_map(pa, sc, channel);
   2736 		if (cp->hw_ok == 0)
   2737 			continue;
   2738 		cmd0643_9_setup_channel(&cp->wdc_channel);
   2739 	}
   2740 	/*
   2741 	 * note - this also makes sure we clear the irq disable and reset
   2742 	 * bits
   2743 	 */
   2744 	pciide_pci_write(sc->sc_pc, sc->sc_tag, CMD_DMA_MODE, CMD_DMA_MULTIPLE);
   2745 	WDCDEBUG_PRINT(("cmd0643_9_chip_map: timings reg now 0x%x 0x%x\n",
   2746 	    pci_conf_read(sc->sc_pc, sc->sc_tag, 0x54),
   2747 	    pci_conf_read(sc->sc_pc, sc->sc_tag, 0x58)),
   2748 	    DEBUG_PROBE);
   2749 }
   2750 
   2751 void
   2752 cmd0643_9_setup_channel(chp)
   2753 	struct channel_softc *chp;
   2754 {
   2755 	struct ata_drive_datas *drvp;
   2756 	u_int8_t tim;
   2757 	u_int32_t idedma_ctl, udma_reg;
   2758 	int drive;
   2759 	struct pciide_channel *cp = (struct pciide_channel*)chp;
   2760 	struct pciide_softc *sc = (struct pciide_softc *)cp->wdc_channel.wdc;
   2761 
   2762 	idedma_ctl = 0;
   2763 	/* setup DMA if needed */
   2764 	pciide_channel_dma_setup(cp);
   2765 
   2766 	for (drive = 0; drive < 2; drive++) {
   2767 		drvp = &chp->ch_drive[drive];
   2768 		/* If no drive, skip */
   2769 		if ((drvp->drive_flags & DRIVE) == 0)
   2770 			continue;
   2771 		/* add timing values, setup DMA if needed */
   2772 		tim = cmd0643_9_data_tim_pio[drvp->PIO_mode];
   2773 		if (drvp->drive_flags & (DRIVE_DMA | DRIVE_UDMA)) {
   2774 			if (drvp->drive_flags & DRIVE_UDMA) {
   2775 				/* UltraDMA on a 646U2, 0648 or 0649 */
   2776 				drvp->drive_flags &= ~DRIVE_DMA;
   2777 				udma_reg = pciide_pci_read(sc->sc_pc,
   2778 				    sc->sc_tag, CMD_UDMATIM(chp->channel));
   2779 				if (drvp->UDMA_mode > 2 &&
   2780 				    (pciide_pci_read(sc->sc_pc, sc->sc_tag,
   2781 				    CMD_BICSR) &
   2782 				    CMD_BICSR_80(chp->channel)) == 0)
   2783 					drvp->UDMA_mode = 2;
   2784 				if (drvp->UDMA_mode > 2)
   2785 					udma_reg &= ~CMD_UDMATIM_UDMA33(drive);
   2786 				else if (sc->sc_wdcdev.UDMA_cap > 2)
   2787 					udma_reg |= CMD_UDMATIM_UDMA33(drive);
   2788 				udma_reg |= CMD_UDMATIM_UDMA(drive);
   2789 				udma_reg &= ~(CMD_UDMATIM_TIM_MASK <<
   2790 				    CMD_UDMATIM_TIM_OFF(drive));
   2791 				udma_reg |=
   2792 				    (cmd0646_9_tim_udma[drvp->UDMA_mode] <<
   2793 				    CMD_UDMATIM_TIM_OFF(drive));
   2794 				pciide_pci_write(sc->sc_pc, sc->sc_tag,
   2795 				    CMD_UDMATIM(chp->channel), udma_reg);
   2796 			} else {
   2797 				/*
   2798 				 * use Multiword DMA.
   2799 				 * Timings will be used for both PIO and DMA,
   2800 				 * so adjust DMA mode if needed
   2801 				 * if we have a 0646U2/8/9, turn off UDMA
   2802 				 */
   2803 				if (sc->sc_wdcdev.cap & WDC_CAPABILITY_UDMA) {
   2804 					udma_reg = pciide_pci_read(sc->sc_pc,
   2805 					    sc->sc_tag,
   2806 					    CMD_UDMATIM(chp->channel));
   2807 					udma_reg &= ~CMD_UDMATIM_UDMA(drive);
   2808 					pciide_pci_write(sc->sc_pc, sc->sc_tag,
   2809 					    CMD_UDMATIM(chp->channel),
   2810 					    udma_reg);
   2811 				}
   2812 				if (drvp->PIO_mode >= 3 &&
   2813 				    (drvp->DMA_mode + 2) > drvp->PIO_mode) {
   2814 					drvp->DMA_mode = drvp->PIO_mode - 2;
   2815 				}
   2816 				tim = cmd0643_9_data_tim_dma[drvp->DMA_mode];
   2817 			}
   2818 			idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
   2819 		}
   2820 		pciide_pci_write(sc->sc_pc, sc->sc_tag,
   2821 		    CMD_DATA_TIM(chp->channel, drive), tim);
   2822 	}
   2823 	if (idedma_ctl != 0) {
   2824 		/* Add software bits in status register */
   2825 		bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   2826 		    IDEDMA_CTL + (IDEDMA_SCH_OFFSET * chp->channel),
   2827 		    idedma_ctl);
   2828 	}
   2829 	pciide_print_modes(cp);
   2830 }
   2831 
   2832 void
   2833 cmd646_9_irqack(chp)
   2834 	struct channel_softc *chp;
   2835 {
   2836 	u_int32_t priirq, secirq;
   2837 	struct pciide_channel *cp = (struct pciide_channel*)chp;
   2838 	struct pciide_softc *sc = (struct pciide_softc *)cp->wdc_channel.wdc;
   2839 
   2840 	if (chp->channel == 0) {
   2841 		priirq = pciide_pci_read(sc->sc_pc, sc->sc_tag, CMD_CONF);
   2842 		pciide_pci_write(sc->sc_pc, sc->sc_tag, CMD_CONF, priirq);
   2843 	} else {
   2844 		secirq = pciide_pci_read(sc->sc_pc, sc->sc_tag, CMD_ARTTIM23);
   2845 		pciide_pci_write(sc->sc_pc, sc->sc_tag, CMD_ARTTIM23, secirq);
   2846 	}
   2847 	pciide_irqack(chp);
   2848 }
   2849 
   2850 void
   2851 cmd680_chip_map(sc, pa)
   2852 	struct pciide_softc *sc;
   2853 	struct pci_attach_args *pa;
   2854 {
   2855 	struct pciide_channel *cp;
   2856 	int channel;
   2857 
   2858 	if (pciide_chipen(sc, pa) == 0)
   2859 		return;
   2860 	printf("%s: bus-master DMA support present",
   2861 	    sc->sc_wdcdev.sc_dev.dv_xname);
   2862 	pciide_mapreg_dma(sc, pa);
   2863 	printf("\n");
   2864 	sc->sc_wdcdev.cap = WDC_CAPABILITY_DATA16 | WDC_CAPABILITY_DATA32 |
   2865 	    WDC_CAPABILITY_MODE;
   2866 	if (sc->sc_dma_ok) {
   2867 		sc->sc_wdcdev.cap |= WDC_CAPABILITY_DMA | WDC_CAPABILITY_IRQACK;
   2868 		sc->sc_wdcdev.cap |= WDC_CAPABILITY_UDMA;
   2869 		sc->sc_wdcdev.UDMA_cap = 6;
   2870 		sc->sc_wdcdev.irqack = pciide_irqack;
   2871 	}
   2872 
   2873 	sc->sc_wdcdev.channels = sc->wdc_chanarray;
   2874 	sc->sc_wdcdev.nchannels = PCIIDE_NUM_CHANNELS;
   2875 	sc->sc_wdcdev.PIO_cap = 4;
   2876 	sc->sc_wdcdev.DMA_cap = 2;
   2877 	sc->sc_wdcdev.set_modes = cmd680_setup_channel;
   2878 
   2879 	pciide_pci_write(sc->sc_pc, sc->sc_tag, 0x80, 0x00);
   2880 	pciide_pci_write(sc->sc_pc, sc->sc_tag, 0x84, 0x00);
   2881 	pciide_pci_write(sc->sc_pc, sc->sc_tag, 0x8a,
   2882 	    pciide_pci_read(sc->sc_pc, sc->sc_tag, 0x8a) | 0x01);
   2883 	for (channel = 0; channel < sc->sc_wdcdev.nchannels; channel++) {
   2884 		cp = &sc->pciide_channels[channel];
   2885 		cmd680_channel_map(pa, sc, channel);
   2886 		if (cp->hw_ok == 0)
   2887 			continue;
   2888 		cmd680_setup_channel(&cp->wdc_channel);
   2889 	}
   2890 }
   2891 
   2892 void
   2893 cmd680_channel_map(pa, sc, channel)
   2894 	struct pci_attach_args *pa;
   2895 	struct pciide_softc *sc;
   2896 	int channel;
   2897 {
   2898 	struct pciide_channel *cp = &sc->pciide_channels[channel];
   2899 	bus_size_t cmdsize, ctlsize;
   2900 	int interface, i, reg;
   2901 	static const u_int8_t init_val[] =
   2902 	    {             0x8a, 0x32, 0x8a, 0x32, 0x8a, 0x32,
   2903 	      0x92, 0x43, 0x92, 0x43, 0x09, 0x40, 0x09, 0x40 };
   2904 
   2905 	if (PCI_SUBCLASS(pa->pa_class) != PCI_SUBCLASS_MASS_STORAGE_IDE) {
   2906 		interface = PCIIDE_INTERFACE_SETTABLE(0) |
   2907 		    PCIIDE_INTERFACE_SETTABLE(1);
   2908 		interface |= PCIIDE_INTERFACE_PCI(0) |
   2909 		    PCIIDE_INTERFACE_PCI(1);
   2910 	} else {
   2911 		interface = PCI_INTERFACE(pa->pa_class);
   2912 	}
   2913 
   2914 	sc->wdc_chanarray[channel] = &cp->wdc_channel;
   2915 	cp->name = PCIIDE_CHANNEL_NAME(channel);
   2916 	cp->wdc_channel.channel = channel;
   2917 	cp->wdc_channel.wdc = &sc->sc_wdcdev;
   2918 
   2919 	cp->wdc_channel.ch_queue =
   2920 	    malloc(sizeof(struct channel_queue), M_DEVBUF, M_NOWAIT);
   2921 	if (cp->wdc_channel.ch_queue == NULL) {
   2922 		printf("%s %s channel: "
   2923 		    "can't allocate memory for command queue",
   2924 		    sc->sc_wdcdev.sc_dev.dv_xname, cp->name);
   2925 		    return;
   2926 	}
   2927 
   2928 	/* XXX */
   2929 	reg = 0xa2 + channel * 16;
   2930 	for (i = 0; i < sizeof(init_val); i++)
   2931 		pciide_pci_write(sc->sc_pc, sc->sc_tag, reg + i, init_val[i]);
   2932 
   2933 	printf("%s: %s channel %s to %s mode\n",
   2934 	    sc->sc_wdcdev.sc_dev.dv_xname, cp->name,
   2935 	    (interface & PCIIDE_INTERFACE_SETTABLE(channel)) ?
   2936 	    "configured" : "wired",
   2937 	    (interface & PCIIDE_INTERFACE_PCI(channel)) ?
   2938 	    "native-PCI" : "compatibility");
   2939 
   2940 	pciide_mapchan(pa, cp, interface, &cmdsize, &ctlsize, pciide_pci_intr);
   2941 	if (cp->hw_ok == 0)
   2942 		return;
   2943 	pciide_map_compat_intr(pa, cp, channel, interface);
   2944 }
   2945 
   2946 void
   2947 cmd680_setup_channel(chp)
   2948 	struct channel_softc *chp;
   2949 {
   2950 	struct ata_drive_datas *drvp;
   2951 	u_int8_t mode, off, scsc;
   2952 	u_int16_t val;
   2953 	u_int32_t idedma_ctl;
   2954 	int drive;
   2955 	struct pciide_channel *cp = (struct pciide_channel*)chp;
   2956 	struct pciide_softc *sc = (struct pciide_softc *)cp->wdc_channel.wdc;
   2957 	pci_chipset_tag_t pc = sc->sc_pc;
   2958 	pcitag_t pa = sc->sc_tag;
   2959 	static const u_int8_t udma2_tbl[] =
   2960 	    { 0x0f, 0x0b, 0x07, 0x06, 0x03, 0x02, 0x01 };
   2961 	static const u_int8_t udma_tbl[] =
   2962 	    { 0x0c, 0x07, 0x05, 0x04, 0x02, 0x01, 0x00 };
   2963 	static const u_int16_t dma_tbl[] =
   2964 	    { 0x2208, 0x10c2, 0x10c1 };
   2965 	static const u_int16_t pio_tbl[] =
   2966 	    { 0x328a, 0x2283, 0x1104, 0x10c3, 0x10c1 };
   2967 
   2968 	idedma_ctl = 0;
   2969 	pciide_channel_dma_setup(cp);
   2970 	mode = pciide_pci_read(pc, pa, 0x80 + chp->channel * 4);
   2971 
   2972 	for (drive = 0; drive < 2; drive++) {
   2973 		drvp = &chp->ch_drive[drive];
   2974 		/* If no drive, skip */
   2975 		if ((drvp->drive_flags & DRIVE) == 0)
   2976 			continue;
   2977 		mode &= ~(0x03 << (drive * 4));
   2978 		if (drvp->drive_flags & DRIVE_UDMA) {
   2979 			drvp->drive_flags &= ~DRIVE_DMA;
   2980 			off = 0xa0 + chp->channel * 16;
   2981 			if (drvp->UDMA_mode > 2 &&
   2982 			    (pciide_pci_read(pc, pa, off) & 0x01) == 0)
   2983 				drvp->UDMA_mode = 2;
   2984 			scsc = pciide_pci_read(pc, pa, 0x8a);
   2985 			if (drvp->UDMA_mode == 6 && (scsc & 0x30) == 0) {
   2986 				pciide_pci_write(pc, pa, 0x8a, scsc | 0x01);
   2987 				scsc = pciide_pci_read(pc, pa, 0x8a);
   2988 				if ((scsc & 0x30) == 0)
   2989 					drvp->UDMA_mode = 5;
   2990 			}
   2991 			mode |= 0x03 << (drive * 4);
   2992 			off = 0xac + chp->channel * 16 + drive * 2;
   2993 			val = pciide_pci_read(pc, pa, off) & ~0x3f;
   2994 			if (scsc & 0x30)
   2995 				val |= udma2_tbl[drvp->UDMA_mode];
   2996 			else
   2997 				val |= udma_tbl[drvp->UDMA_mode];
   2998 			pciide_pci_write(pc, pa, off, val);
   2999 			idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
   3000 		} else if (drvp->drive_flags & DRIVE_DMA) {
   3001 			mode |= 0x02 << (drive * 4);
   3002 			off = 0xa8 + chp->channel * 16 + drive * 2;
   3003 			val = dma_tbl[drvp->DMA_mode];
   3004 			pciide_pci_write(pc, pa, off, val & 0xff);
   3005 			pciide_pci_write(pc, pa, off, val >> 8);
   3006 			idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
   3007 		} else {
   3008 			mode |= 0x01 << (drive * 4);
   3009 			off = 0xa4 + chp->channel * 16 + drive * 2;
   3010 			val = pio_tbl[drvp->PIO_mode];
   3011 			pciide_pci_write(pc, pa, off, val & 0xff);
   3012 			pciide_pci_write(pc, pa, off, val >> 8);
   3013 		}
   3014 	}
   3015 
   3016 	pciide_pci_write(pc, pa, 0x80 + chp->channel * 4, mode);
   3017 	if (idedma_ctl != 0) {
   3018 		/* Add software bits in status register */
   3019 		bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   3020 		    IDEDMA_CTL + (IDEDMA_SCH_OFFSET * chp->channel),
   3021 		    idedma_ctl);
   3022 	}
   3023 	pciide_print_modes(cp);
   3024 }
   3025 
   3026 void
   3027 cy693_chip_map(sc, pa)
   3028 	struct pciide_softc *sc;
   3029 	struct pci_attach_args *pa;
   3030 {
   3031 	struct pciide_channel *cp;
   3032 	pcireg_t interface = PCI_INTERFACE(pa->pa_class);
   3033 	bus_size_t cmdsize, ctlsize;
   3034 
   3035 	if (pciide_chipen(sc, pa) == 0)
   3036 		return;
   3037 	/*
   3038 	 * this chip has 2 PCI IDE functions, one for primary and one for
   3039 	 * secondary. So we need to call pciide_mapregs_compat() with
   3040 	 * the real channel
   3041 	 */
   3042 	if (pa->pa_function == 1) {
   3043 		sc->sc_cy_compatchan = 0;
   3044 	} else if (pa->pa_function == 2) {
   3045 		sc->sc_cy_compatchan = 1;
   3046 	} else {
   3047 		printf("%s: unexpected PCI function %d\n",
   3048 		    sc->sc_wdcdev.sc_dev.dv_xname, pa->pa_function);
   3049 		return;
   3050 	}
   3051 	if (interface & PCIIDE_INTERFACE_BUS_MASTER_DMA) {
   3052 		printf("%s: bus-master DMA support present",
   3053 		    sc->sc_wdcdev.sc_dev.dv_xname);
   3054 		pciide_mapreg_dma(sc, pa);
   3055 	} else {
   3056 		printf("%s: hardware does not support DMA",
   3057 		    sc->sc_wdcdev.sc_dev.dv_xname);
   3058 		sc->sc_dma_ok = 0;
   3059 	}
   3060 	printf("\n");
   3061 
   3062 	sc->sc_cy_handle = cy82c693_init(pa->pa_iot);
   3063 	if (sc->sc_cy_handle == NULL) {
   3064 		printf("%s: unable to map hyperCache control registers\n",
   3065 		    sc->sc_wdcdev.sc_dev.dv_xname);
   3066 		sc->sc_dma_ok = 0;
   3067 	}
   3068 
   3069 	sc->sc_wdcdev.cap = WDC_CAPABILITY_DATA16 | WDC_CAPABILITY_DATA32 |
   3070 	    WDC_CAPABILITY_MODE;
   3071 	if (sc->sc_dma_ok) {
   3072 		sc->sc_wdcdev.cap |= WDC_CAPABILITY_DMA | WDC_CAPABILITY_IRQACK;
   3073 		sc->sc_wdcdev.irqack = pciide_irqack;
   3074 	}
   3075 	sc->sc_wdcdev.PIO_cap = 4;
   3076 	sc->sc_wdcdev.DMA_cap = 2;
   3077 	sc->sc_wdcdev.set_modes = cy693_setup_channel;
   3078 
   3079 	sc->sc_wdcdev.channels = sc->wdc_chanarray;
   3080 	sc->sc_wdcdev.nchannels = 1;
   3081 
   3082 	/* Only one channel for this chip; if we are here it's enabled */
   3083 	cp = &sc->pciide_channels[0];
   3084 	sc->wdc_chanarray[0] = &cp->wdc_channel;
   3085 	cp->name = PCIIDE_CHANNEL_NAME(0);
   3086 	cp->wdc_channel.channel = 0;
   3087 	cp->wdc_channel.wdc = &sc->sc_wdcdev;
   3088 	cp->wdc_channel.ch_queue =
   3089 	    malloc(sizeof(struct channel_queue), M_DEVBUF, M_NOWAIT);
   3090 	if (cp->wdc_channel.ch_queue == NULL) {
   3091 		printf("%s primary channel: "
   3092 		    "can't allocate memory for command queue",
   3093 		sc->sc_wdcdev.sc_dev.dv_xname);
   3094 		return;
   3095 	}
   3096 	printf("%s: primary channel %s to ",
   3097 	    sc->sc_wdcdev.sc_dev.dv_xname,
   3098 	    (interface & PCIIDE_INTERFACE_SETTABLE(0)) ?
   3099 	    "configured" : "wired");
   3100 	if (interface & PCIIDE_INTERFACE_PCI(0)) {
   3101 		printf("native-PCI");
   3102 		cp->hw_ok = pciide_mapregs_native(pa, cp, &cmdsize, &ctlsize,
   3103 		    pciide_pci_intr);
   3104 	} else {
   3105 		printf("compatibility");
   3106 		cp->hw_ok = pciide_mapregs_compat(pa, cp, sc->sc_cy_compatchan,
   3107 		    &cmdsize, &ctlsize);
   3108 	}
   3109 	printf(" mode\n");
   3110 	cp->wdc_channel.data32iot = cp->wdc_channel.cmd_iot;
   3111 	cp->wdc_channel.data32ioh = cp->wdc_channel.cmd_ioh;
   3112 	wdcattach(&cp->wdc_channel);
   3113 	if (pciide_chan_candisable(cp)) {
   3114 		pci_conf_write(sc->sc_pc, sc->sc_tag,
   3115 		    PCI_COMMAND_STATUS_REG, 0);
   3116 	}
   3117 	pciide_map_compat_intr(pa, cp, sc->sc_cy_compatchan, interface);
   3118 	if (cp->hw_ok == 0)
   3119 		return;
   3120 	WDCDEBUG_PRINT(("cy693_chip_map: old timings reg 0x%x\n",
   3121 	    pci_conf_read(sc->sc_pc, sc->sc_tag, CY_CMD_CTRL)),DEBUG_PROBE);
   3122 	cy693_setup_channel(&cp->wdc_channel);
   3123 	WDCDEBUG_PRINT(("cy693_chip_map: new timings reg 0x%x\n",
   3124 	    pci_conf_read(sc->sc_pc, sc->sc_tag, CY_CMD_CTRL)), DEBUG_PROBE);
   3125 }
   3126 
   3127 void
   3128 cy693_setup_channel(chp)
   3129 	struct channel_softc *chp;
   3130 {
   3131 	struct ata_drive_datas *drvp;
   3132 	int drive;
   3133 	u_int32_t cy_cmd_ctrl;
   3134 	u_int32_t idedma_ctl;
   3135 	struct pciide_channel *cp = (struct pciide_channel*)chp;
   3136 	struct pciide_softc *sc = (struct pciide_softc *)cp->wdc_channel.wdc;
   3137 	int dma_mode = -1;
   3138 
   3139 	cy_cmd_ctrl = idedma_ctl = 0;
   3140 
   3141 	/* setup DMA if needed */
   3142 	pciide_channel_dma_setup(cp);
   3143 
   3144 	for (drive = 0; drive < 2; drive++) {
   3145 		drvp = &chp->ch_drive[drive];
   3146 		/* If no drive, skip */
   3147 		if ((drvp->drive_flags & DRIVE) == 0)
   3148 			continue;
   3149 		/* add timing values, setup DMA if needed */
   3150 		if (drvp->drive_flags & DRIVE_DMA) {
   3151 			idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
   3152 			/* use Multiword DMA */
   3153 			if (dma_mode == -1 || dma_mode > drvp->DMA_mode)
   3154 				dma_mode = drvp->DMA_mode;
   3155 		}
   3156 		cy_cmd_ctrl |= (cy_pio_pulse[drvp->PIO_mode] <<
   3157 		    CY_CMD_CTRL_IOW_PULSE_OFF(drive));
   3158 		cy_cmd_ctrl |= (cy_pio_rec[drvp->PIO_mode] <<
   3159 		    CY_CMD_CTRL_IOW_REC_OFF(drive));
   3160 		cy_cmd_ctrl |= (cy_pio_pulse[drvp->PIO_mode] <<
   3161 		    CY_CMD_CTRL_IOR_PULSE_OFF(drive));
   3162 		cy_cmd_ctrl |= (cy_pio_rec[drvp->PIO_mode] <<
   3163 		    CY_CMD_CTRL_IOR_REC_OFF(drive));
   3164 	}
   3165 	pci_conf_write(sc->sc_pc, sc->sc_tag, CY_CMD_CTRL, cy_cmd_ctrl);
   3166 	chp->ch_drive[0].DMA_mode = dma_mode;
   3167 	chp->ch_drive[1].DMA_mode = dma_mode;
   3168 
   3169 	if (dma_mode == -1)
   3170 		dma_mode = 0;
   3171 
   3172 	if (sc->sc_cy_handle != NULL) {
   3173 		/* Note: `multiple' is implied. */
   3174 		cy82c693_write(sc->sc_cy_handle,
   3175 		    (sc->sc_cy_compatchan == 0) ?
   3176 		    CY_DMA_IDX_PRIMARY : CY_DMA_IDX_SECONDARY, dma_mode);
   3177 	}
   3178 
   3179 	pciide_print_modes(cp);
   3180 
   3181 	if (idedma_ctl != 0) {
   3182 		/* Add software bits in status register */
   3183 		bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   3184 		    IDEDMA_CTL, idedma_ctl);
   3185 	}
   3186 }
   3187 
   3188 static struct sis_hostbr_type {
   3189 	u_int16_t id;
   3190 	u_int8_t rev;
   3191 	u_int8_t udma_mode;
   3192 	char *name;
   3193 	u_int8_t type;
   3194 #define SIS_TYPE_NOUDMA	0
   3195 #define SIS_TYPE_66	1
   3196 #define SIS_TYPE_100OLD	2
   3197 #define SIS_TYPE_100NEW 3
   3198 #define SIS_TYPE_133OLD 4
   3199 #define SIS_TYPE_133NEW 5
   3200 #define SIS_TYPE_SOUTH	6
   3201 } sis_hostbr_type[] = {
   3202 	/* Most infos here are from sos (at) freebsd.org */
   3203 	{PCI_PRODUCT_SIS_530HB, 0x00, 4, "530", SIS_TYPE_66},
   3204 #if 0
   3205 	/*
   3206 	 * controllers associated to a rev 0x2 530 Host to PCI Bridge
   3207 	 * have problems with UDMA (info provided by Christos)
   3208 	 */
   3209 	{PCI_PRODUCT_SIS_530HB, 0x02, 0, "530 (buggy)", SIS_TYPE_NOUDMA},
   3210 #endif
   3211 	{PCI_PRODUCT_SIS_540HB, 0x00, 4, "540", SIS_TYPE_66},
   3212 	{PCI_PRODUCT_SIS_550HB, 0x00, 4, "550", SIS_TYPE_66},
   3213 	{PCI_PRODUCT_SIS_620,   0x00, 4, "620", SIS_TYPE_66},
   3214 	{PCI_PRODUCT_SIS_630,   0x00, 4, "630", SIS_TYPE_66},
   3215 	{PCI_PRODUCT_SIS_630,   0x30, 5, "630S", SIS_TYPE_100NEW},
   3216 	{PCI_PRODUCT_SIS_633,   0x00, 5, "633", SIS_TYPE_100NEW},
   3217 	{PCI_PRODUCT_SIS_635,   0x00, 5, "635", SIS_TYPE_100NEW},
   3218 	{PCI_PRODUCT_SIS_640,   0x00, 4, "640", SIS_TYPE_SOUTH},
   3219 	{PCI_PRODUCT_SIS_645,   0x00, 6, "645", SIS_TYPE_SOUTH},
   3220 	{PCI_PRODUCT_SIS_646,   0x00, 6, "645DX", SIS_TYPE_SOUTH},
   3221 	{PCI_PRODUCT_SIS_648,   0x00, 6, "648", SIS_TYPE_SOUTH},
   3222 	{PCI_PRODUCT_SIS_650,   0x00, 6, "650", SIS_TYPE_SOUTH},
   3223 	{PCI_PRODUCT_SIS_651,   0x00, 6, "651", SIS_TYPE_SOUTH},
   3224 	{PCI_PRODUCT_SIS_652,   0x00, 6, "652", SIS_TYPE_SOUTH},
   3225 	{PCI_PRODUCT_SIS_655,   0x00, 6, "655", SIS_TYPE_SOUTH},
   3226 	{PCI_PRODUCT_SIS_658,   0x00, 6, "658", SIS_TYPE_SOUTH},
   3227 	{PCI_PRODUCT_SIS_730,   0x00, 5, "730", SIS_TYPE_100OLD},
   3228 	{PCI_PRODUCT_SIS_733,   0x00, 5, "733", SIS_TYPE_100NEW},
   3229 	{PCI_PRODUCT_SIS_735,   0x00, 5, "735", SIS_TYPE_100NEW},
   3230 	{PCI_PRODUCT_SIS_740,   0x00, 5, "740", SIS_TYPE_SOUTH},
   3231 	{PCI_PRODUCT_SIS_745,   0x00, 5, "745", SIS_TYPE_100NEW},
   3232 	{PCI_PRODUCT_SIS_746,   0x00, 6, "746", SIS_TYPE_SOUTH},
   3233 	{PCI_PRODUCT_SIS_748,   0x00, 6, "748", SIS_TYPE_SOUTH},
   3234 	{PCI_PRODUCT_SIS_750,   0x00, 6, "750", SIS_TYPE_SOUTH},
   3235 	{PCI_PRODUCT_SIS_751,   0x00, 6, "751", SIS_TYPE_SOUTH},
   3236 	{PCI_PRODUCT_SIS_752,   0x00, 6, "752", SIS_TYPE_SOUTH},
   3237 	{PCI_PRODUCT_SIS_755,   0x00, 6, "755", SIS_TYPE_SOUTH},
   3238 	/*
   3239 	 * From sos (at) freebsd.org: the 0x961 ID will never be found in real world
   3240 	 * {PCI_PRODUCT_SIS_961,   0x00, 6, "961", SIS_TYPE_133NEW},
   3241 	 */
   3242 	{PCI_PRODUCT_SIS_962,   0x00, 6, "962", SIS_TYPE_133NEW},
   3243 	{PCI_PRODUCT_SIS_963,   0x00, 6, "963", SIS_TYPE_133NEW},
   3244 };
   3245 
   3246 static struct sis_hostbr_type *sis_hostbr_type_match;
   3247 
   3248 static int
   3249 sis_hostbr_match(pa)
   3250 	struct pci_attach_args *pa;
   3251 {
   3252 	int i;
   3253 	if (PCI_VENDOR(pa->pa_id) != PCI_VENDOR_SIS)
   3254 		return 0;
   3255 	sis_hostbr_type_match = NULL;
   3256 	for (i = 0;
   3257 	    i < sizeof(sis_hostbr_type) / sizeof(sis_hostbr_type[0]);
   3258 	    i++) {
   3259 		if (PCI_PRODUCT(pa->pa_id) == sis_hostbr_type[i].id &&
   3260 		    PCI_REVISION(pa->pa_class) >= sis_hostbr_type[i].rev)
   3261 			sis_hostbr_type_match = &sis_hostbr_type[i];
   3262 	}
   3263 	return (sis_hostbr_type_match != NULL);
   3264 }
   3265 
   3266 static int sis_south_match(pa)
   3267 	struct pci_attach_args *pa;
   3268 {
   3269 	return(PCI_VENDOR(pa->pa_id) == PCI_VENDOR_SIS &&
   3270 		PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_SIS_85C503 &&
   3271 		PCI_REVISION(pa->pa_class) >= 0x10);
   3272 }
   3273 
   3274 void
   3275 sis_chip_map(sc, pa)
   3276 	struct pciide_softc *sc;
   3277 	struct pci_attach_args *pa;
   3278 {
   3279 	struct pciide_channel *cp;
   3280 	int channel;
   3281 	u_int8_t sis_ctr0 = pciide_pci_read(sc->sc_pc, sc->sc_tag, SIS_CTRL0);
   3282 	pcireg_t interface = PCI_INTERFACE(pa->pa_class);
   3283 	pcireg_t rev = PCI_REVISION(pa->pa_class);
   3284 	bus_size_t cmdsize, ctlsize;
   3285 
   3286 	if (pciide_chipen(sc, pa) == 0)
   3287 		return;
   3288 	printf(": Silicon Integrated System ");
   3289 	pci_find_device(NULL, sis_hostbr_match);
   3290 	if (sis_hostbr_type_match) {
   3291 		if (sis_hostbr_type_match->type == SIS_TYPE_SOUTH) {
   3292 			pciide_pci_write(sc->sc_pc, sc->sc_tag, SIS_REG_57,
   3293 			    pciide_pci_read(sc->sc_pc, sc->sc_tag,
   3294 			    SIS_REG_57) & 0x7f);
   3295 			if (PCI_PRODUCT(pci_conf_read(sc->sc_pc, sc->sc_tag,
   3296 			    PCI_ID_REG)) == SIS_PRODUCT_5518) {
   3297 				printf("96X UDMA%d",
   3298 				    sis_hostbr_type_match->udma_mode);
   3299 				sc->sis_type = SIS_TYPE_133NEW;
   3300 				sc->sc_wdcdev.UDMA_cap =
   3301 			    	    sis_hostbr_type_match->udma_mode;
   3302 			} else {
   3303 				if (pci_find_device(NULL, sis_south_match)) {
   3304 					sc->sis_type = SIS_TYPE_133OLD;
   3305 					sc->sc_wdcdev.UDMA_cap =
   3306 				    	    sis_hostbr_type_match->udma_mode;
   3307 				} else {
   3308 					sc->sis_type = SIS_TYPE_100NEW;
   3309 					sc->sc_wdcdev.UDMA_cap =
   3310 					    sis_hostbr_type_match->udma_mode;
   3311 				}
   3312 			}
   3313 		} else {
   3314 			sc->sis_type = sis_hostbr_type_match->type;
   3315 			sc->sc_wdcdev.UDMA_cap =
   3316 		    	    sis_hostbr_type_match->udma_mode;
   3317 		}
   3318 		printf(sis_hostbr_type_match->name);
   3319 	} else {
   3320 		printf("5597/5598");
   3321 		if (rev >= 0xd0) {
   3322 			sc->sc_wdcdev.UDMA_cap = 2;
   3323 			sc->sis_type = SIS_TYPE_66;
   3324 		} else {
   3325 			sc->sc_wdcdev.UDMA_cap = 0;
   3326 			sc->sis_type = SIS_TYPE_NOUDMA;
   3327 		}
   3328 	}
   3329 	printf(" IDE controller (rev. 0x%02x)\n", PCI_REVISION(pa->pa_class));
   3330 	printf("%s: bus-master DMA support present",
   3331 	    sc->sc_wdcdev.sc_dev.dv_xname);
   3332 	pciide_mapreg_dma(sc, pa);
   3333 	printf("\n");
   3334 
   3335 	sc->sc_wdcdev.cap = WDC_CAPABILITY_DATA16 | WDC_CAPABILITY_DATA32 |
   3336 	    WDC_CAPABILITY_MODE;
   3337 	if (sc->sc_dma_ok) {
   3338 		sc->sc_wdcdev.cap |= WDC_CAPABILITY_DMA | WDC_CAPABILITY_IRQACK;
   3339 		sc->sc_wdcdev.irqack = pciide_irqack;
   3340 		if (sc->sis_type >= SIS_TYPE_66)
   3341 			sc->sc_wdcdev.cap |= WDC_CAPABILITY_UDMA;
   3342 	}
   3343 
   3344 	sc->sc_wdcdev.PIO_cap = 4;
   3345 	sc->sc_wdcdev.DMA_cap = 2;
   3346 
   3347 	sc->sc_wdcdev.channels = sc->wdc_chanarray;
   3348 	sc->sc_wdcdev.nchannels = PCIIDE_NUM_CHANNELS;
   3349 	switch(sc->sis_type) {
   3350 	case SIS_TYPE_NOUDMA:
   3351 	case SIS_TYPE_66:
   3352 	case SIS_TYPE_100OLD:
   3353 		sc->sc_wdcdev.set_modes = sis_setup_channel;
   3354 		pciide_pci_write(sc->sc_pc, sc->sc_tag, SIS_MISC,
   3355 		    pciide_pci_read(sc->sc_pc, sc->sc_tag, SIS_MISC) |
   3356 		    SIS_MISC_TIM_SEL | SIS_MISC_FIFO_SIZE | SIS_MISC_GTC);
   3357 		break;
   3358 	case SIS_TYPE_100NEW:
   3359 	case SIS_TYPE_133OLD:
   3360 		sc->sc_wdcdev.set_modes = sis_setup_channel;
   3361 		pciide_pci_write(sc->sc_pc, sc->sc_tag, SIS_REG_49,
   3362 		    pciide_pci_read(sc->sc_pc, sc->sc_tag, SIS_REG_49) | 0x01);
   3363 		break;
   3364 	case SIS_TYPE_133NEW:
   3365 		sc->sc_wdcdev.set_modes = sis96x_setup_channel;
   3366 		pciide_pci_write(sc->sc_pc, sc->sc_tag, SIS_REG_50,
   3367 		    pciide_pci_read(sc->sc_pc, sc->sc_tag, SIS_REG_50) & 0xf7);
   3368 		pciide_pci_write(sc->sc_pc, sc->sc_tag, SIS_REG_52,
   3369 		    pciide_pci_read(sc->sc_pc, sc->sc_tag, SIS_REG_52) & 0xf7);
   3370 		break;
   3371 	}
   3372 
   3373 
   3374 	for (channel = 0; channel < sc->sc_wdcdev.nchannels; channel++) {
   3375 		cp = &sc->pciide_channels[channel];
   3376 		if (pciide_chansetup(sc, channel, interface) == 0)
   3377 			continue;
   3378 		if ((channel == 0 && (sis_ctr0 & SIS_CTRL0_CHAN0_EN) == 0) ||
   3379 		    (channel == 1 && (sis_ctr0 & SIS_CTRL0_CHAN1_EN) == 0)) {
   3380 			printf("%s: %s channel ignored (disabled)\n",
   3381 			    sc->sc_wdcdev.sc_dev.dv_xname, cp->name);
   3382 			continue;
   3383 		}
   3384 		pciide_mapchan(pa, cp, interface, &cmdsize, &ctlsize,
   3385 		    pciide_pci_intr);
   3386 		if (cp->hw_ok == 0)
   3387 			continue;
   3388 		if (pciide_chan_candisable(cp)) {
   3389 			if (channel == 0)
   3390 				sis_ctr0 &= ~SIS_CTRL0_CHAN0_EN;
   3391 			else
   3392 				sis_ctr0 &= ~SIS_CTRL0_CHAN1_EN;
   3393 			pciide_pci_write(sc->sc_pc, sc->sc_tag, SIS_CTRL0,
   3394 			    sis_ctr0);
   3395 		}
   3396 		pciide_map_compat_intr(pa, cp, channel, interface);
   3397 		if (cp->hw_ok == 0)
   3398 			continue;
   3399 		sc->sc_wdcdev.set_modes(&cp->wdc_channel);
   3400 	}
   3401 }
   3402 
   3403 void
   3404 sis96x_setup_channel(chp)
   3405 	struct channel_softc *chp;
   3406 {
   3407 	struct ata_drive_datas *drvp;
   3408 	int drive;
   3409 	u_int32_t sis_tim;
   3410 	u_int32_t idedma_ctl;
   3411 	int regtim;
   3412 	struct pciide_channel *cp = (struct pciide_channel*)chp;
   3413 	struct pciide_softc *sc = (struct pciide_softc *)cp->wdc_channel.wdc;
   3414 
   3415 	sis_tim = 0;
   3416 	idedma_ctl = 0;
   3417 	/* setup DMA if needed */
   3418 	pciide_channel_dma_setup(cp);
   3419 
   3420 	for (drive = 0; drive < 2; drive++) {
   3421 		regtim = SIS_TIM133(
   3422 		    pciide_pci_read(sc->sc_pc, sc->sc_tag, SIS_REG_57),
   3423 		    chp->channel, drive);
   3424 		drvp = &chp->ch_drive[drive];
   3425 		/* If no drive, skip */
   3426 		if ((drvp->drive_flags & DRIVE) == 0)
   3427 			continue;
   3428 		/* add timing values, setup DMA if needed */
   3429 		if (drvp->drive_flags & DRIVE_UDMA) {
   3430 			/* use Ultra/DMA */
   3431 			drvp->drive_flags &= ~DRIVE_DMA;
   3432 			if (pciide_pci_read(sc->sc_pc, sc->sc_tag,
   3433 			    SIS96x_REG_CBL(chp->channel)) & SIS96x_REG_CBL_33) {
   3434 				if (drvp->UDMA_mode > 2)
   3435 					drvp->UDMA_mode = 2;
   3436 			}
   3437 			sis_tim |= sis_udma133new_tim[drvp->UDMA_mode];
   3438 			sis_tim |= sis_pio133new_tim[drvp->PIO_mode];
   3439 			idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
   3440 		} else if (drvp->drive_flags & DRIVE_DMA) {
   3441 			/*
   3442 			 * use Multiword DMA
   3443 			 * Timings will be used for both PIO and DMA,
   3444 			 * so adjust DMA mode if needed
   3445 			 */
   3446 			if (drvp->PIO_mode > (drvp->DMA_mode + 2))
   3447 				drvp->PIO_mode = drvp->DMA_mode + 2;
   3448 			if (drvp->DMA_mode + 2 > (drvp->PIO_mode))
   3449 				drvp->DMA_mode = (drvp->PIO_mode > 2) ?
   3450 				    drvp->PIO_mode - 2 : 0;
   3451 			sis_tim |= sis_dma133new_tim[drvp->DMA_mode];
   3452 			idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
   3453 		} else {
   3454 			sis_tim |= sis_pio133new_tim[drvp->PIO_mode];
   3455 		}
   3456 		WDCDEBUG_PRINT(("sis96x_setup_channel: new timings reg for "
   3457 		    "channel %d drive %d: 0x%x (reg 0x%x)\n",
   3458 		    chp->channel, drive, sis_tim, regtim), DEBUG_PROBE);
   3459 		pci_conf_write(sc->sc_pc, sc->sc_tag, regtim, sis_tim);
   3460 	}
   3461 	if (idedma_ctl != 0) {
   3462 		/* Add software bits in status register */
   3463 		bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   3464 		    IDEDMA_CTL+ (IDEDMA_SCH_OFFSET * chp->channel),
   3465 		    idedma_ctl);
   3466 	}
   3467 	pciide_print_modes(cp);
   3468 }
   3469 
   3470 void
   3471 sis_setup_channel(chp)
   3472 	struct channel_softc *chp;
   3473 {
   3474 	struct ata_drive_datas *drvp;
   3475 	int drive;
   3476 	u_int32_t sis_tim;
   3477 	u_int32_t idedma_ctl;
   3478 	struct pciide_channel *cp = (struct pciide_channel*)chp;
   3479 	struct pciide_softc *sc = (struct pciide_softc *)cp->wdc_channel.wdc;
   3480 
   3481 	WDCDEBUG_PRINT(("sis_setup_channel: old timings reg for "
   3482 	    "channel %d 0x%x\n", chp->channel,
   3483 	    pci_conf_read(sc->sc_pc, sc->sc_tag, SIS_TIM(chp->channel))),
   3484 	    DEBUG_PROBE);
   3485 	sis_tim = 0;
   3486 	idedma_ctl = 0;
   3487 	/* setup DMA if needed */
   3488 	pciide_channel_dma_setup(cp);
   3489 
   3490 	for (drive = 0; drive < 2; drive++) {
   3491 		drvp = &chp->ch_drive[drive];
   3492 		/* If no drive, skip */
   3493 		if ((drvp->drive_flags & DRIVE) == 0)
   3494 			continue;
   3495 		/* add timing values, setup DMA if needed */
   3496 		if ((drvp->drive_flags & DRIVE_DMA) == 0 &&
   3497 		    (drvp->drive_flags & DRIVE_UDMA) == 0)
   3498 			goto pio;
   3499 
   3500 		if (drvp->drive_flags & DRIVE_UDMA) {
   3501 			/* use Ultra/DMA */
   3502 			drvp->drive_flags &= ~DRIVE_DMA;
   3503 			if (pciide_pci_read(sc->sc_pc, sc->sc_tag,
   3504 			    SIS_REG_CBL) & SIS_REG_CBL_33(chp->channel)) {
   3505 				if (drvp->UDMA_mode > 2)
   3506 					drvp->UDMA_mode = 2;
   3507 			}
   3508 			switch (sc->sis_type) {
   3509 			case SIS_TYPE_66:
   3510 			case SIS_TYPE_100OLD:
   3511 				sis_tim |= sis_udma66_tim[drvp->UDMA_mode] <<
   3512 				    SIS_TIM66_UDMA_TIME_OFF(drive);
   3513 				break;
   3514 			case SIS_TYPE_100NEW:
   3515 				sis_tim |=
   3516 				    sis_udma100new_tim[drvp->UDMA_mode] <<
   3517 				    SIS_TIM100_UDMA_TIME_OFF(drive);
   3518 			case SIS_TYPE_133OLD:
   3519 				sis_tim |=
   3520 				    sis_udma133old_tim[drvp->UDMA_mode] <<
   3521 				    SIS_TIM100_UDMA_TIME_OFF(drive);
   3522 				break;
   3523 			default:
   3524 				printf("unknown SiS IDE type %d\n",
   3525 				    sc->sis_type);
   3526 			}
   3527 		} else {
   3528 			/*
   3529 			 * use Multiword DMA
   3530 			 * Timings will be used for both PIO and DMA,
   3531 			 * so adjust DMA mode if needed
   3532 			 */
   3533 			if (drvp->PIO_mode > (drvp->DMA_mode + 2))
   3534 				drvp->PIO_mode = drvp->DMA_mode + 2;
   3535 			if (drvp->DMA_mode + 2 > (drvp->PIO_mode))
   3536 				drvp->DMA_mode = (drvp->PIO_mode > 2) ?
   3537 				    drvp->PIO_mode - 2 : 0;
   3538 			if (drvp->DMA_mode == 0)
   3539 				drvp->PIO_mode = 0;
   3540 		}
   3541 		idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
   3542 pio:		switch (sc->sis_type) {
   3543 		case SIS_TYPE_NOUDMA:
   3544 		case SIS_TYPE_66:
   3545 		case SIS_TYPE_100OLD:
   3546 			sis_tim |= sis_pio_act[drvp->PIO_mode] <<
   3547 			    SIS_TIM66_ACT_OFF(drive);
   3548 			sis_tim |= sis_pio_rec[drvp->PIO_mode] <<
   3549 			    SIS_TIM66_REC_OFF(drive);
   3550 			break;
   3551 		case SIS_TYPE_100NEW:
   3552 		case SIS_TYPE_133OLD:
   3553 			sis_tim |= sis_pio_act[drvp->PIO_mode] <<
   3554 			    SIS_TIM100_ACT_OFF(drive);
   3555 			sis_tim |= sis_pio_rec[drvp->PIO_mode] <<
   3556 			    SIS_TIM100_REC_OFF(drive);
   3557 			break;
   3558 		default:
   3559 			printf("unknown SiS IDE type %d\n",
   3560 			    sc->sis_type);
   3561 		}
   3562 	}
   3563 	WDCDEBUG_PRINT(("sis_setup_channel: new timings reg for "
   3564 	    "channel %d 0x%x\n", chp->channel, sis_tim), DEBUG_PROBE);
   3565 	pci_conf_write(sc->sc_pc, sc->sc_tag, SIS_TIM(chp->channel), sis_tim);
   3566 	if (idedma_ctl != 0) {
   3567 		/* Add software bits in status register */
   3568 		bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   3569 		    IDEDMA_CTL+ (IDEDMA_SCH_OFFSET * chp->channel),
   3570 		    idedma_ctl);
   3571 	}
   3572 	pciide_print_modes(cp);
   3573 }
   3574 
   3575 void
   3576 acer_chip_map(sc, pa)
   3577 	struct pciide_softc *sc;
   3578 	struct pci_attach_args *pa;
   3579 {
   3580 	struct pciide_channel *cp;
   3581 	int channel;
   3582 	pcireg_t cr, interface;
   3583 	bus_size_t cmdsize, ctlsize;
   3584 	pcireg_t rev = PCI_REVISION(pa->pa_class);
   3585 
   3586 	if (pciide_chipen(sc, pa) == 0)
   3587 		return;
   3588 	printf("%s: bus-master DMA support present",
   3589 	    sc->sc_wdcdev.sc_dev.dv_xname);
   3590 	pciide_mapreg_dma(sc, pa);
   3591 	printf("\n");
   3592 	sc->sc_wdcdev.cap = WDC_CAPABILITY_DATA16 | WDC_CAPABILITY_DATA32 |
   3593 	    WDC_CAPABILITY_MODE;
   3594 	if (sc->sc_dma_ok) {
   3595 		sc->sc_wdcdev.cap |= WDC_CAPABILITY_DMA;
   3596 		if (rev >= 0x20) {
   3597 			sc->sc_wdcdev.cap |= WDC_CAPABILITY_UDMA;
   3598 			if (rev >= 0xC4)
   3599 				sc->sc_wdcdev.UDMA_cap = 5;
   3600 			else if (rev >= 0xC2)
   3601 				sc->sc_wdcdev.UDMA_cap = 4;
   3602 			else
   3603 				sc->sc_wdcdev.UDMA_cap = 2;
   3604 		}
   3605 		sc->sc_wdcdev.cap |= WDC_CAPABILITY_IRQACK;
   3606 		sc->sc_wdcdev.irqack = pciide_irqack;
   3607 	}
   3608 
   3609 	sc->sc_wdcdev.PIO_cap = 4;
   3610 	sc->sc_wdcdev.DMA_cap = 2;
   3611 	sc->sc_wdcdev.set_modes = acer_setup_channel;
   3612 	sc->sc_wdcdev.channels = sc->wdc_chanarray;
   3613 	sc->sc_wdcdev.nchannels = PCIIDE_NUM_CHANNELS;
   3614 
   3615 	pciide_pci_write(sc->sc_pc, sc->sc_tag, ACER_CDRC,
   3616 	    (pciide_pci_read(sc->sc_pc, sc->sc_tag, ACER_CDRC) |
   3617 		ACER_CDRC_DMA_EN) & ~ACER_CDRC_FIFO_DISABLE);
   3618 
   3619 	/* Enable "microsoft register bits" R/W. */
   3620 	pciide_pci_write(sc->sc_pc, sc->sc_tag, ACER_CCAR3,
   3621 	    pciide_pci_read(sc->sc_pc, sc->sc_tag, ACER_CCAR3) | ACER_CCAR3_PI);
   3622 	pciide_pci_write(sc->sc_pc, sc->sc_tag, ACER_CCAR1,
   3623 	    pciide_pci_read(sc->sc_pc, sc->sc_tag, ACER_CCAR1) &
   3624 	    ~(ACER_CHANSTATUS_RO|PCIIDE_CHAN_RO(0)|PCIIDE_CHAN_RO(1)));
   3625 	pciide_pci_write(sc->sc_pc, sc->sc_tag, ACER_CCAR2,
   3626 	    pciide_pci_read(sc->sc_pc, sc->sc_tag, ACER_CCAR2) &
   3627 	    ~ACER_CHANSTATUSREGS_RO);
   3628 	cr = pci_conf_read(sc->sc_pc, sc->sc_tag, PCI_CLASS_REG);
   3629 	cr |= (PCIIDE_CHANSTATUS_EN << PCI_INTERFACE_SHIFT);
   3630 	pci_conf_write(sc->sc_pc, sc->sc_tag, PCI_CLASS_REG, cr);
   3631 	/* Don't use cr, re-read the real register content instead */
   3632 	interface = PCI_INTERFACE(pci_conf_read(sc->sc_pc, sc->sc_tag,
   3633 	    PCI_CLASS_REG));
   3634 
   3635 	/* From linux: enable "Cable Detection" */
   3636 	if (rev >= 0xC2) {
   3637 		pciide_pci_write(sc->sc_pc, sc->sc_tag, ACER_0x4B,
   3638 		    pciide_pci_read(sc->sc_pc, sc->sc_tag, ACER_0x4B)
   3639 		    | ACER_0x4B_CDETECT);
   3640 	}
   3641 
   3642 	for (channel = 0; channel < sc->sc_wdcdev.nchannels; channel++) {
   3643 		cp = &sc->pciide_channels[channel];
   3644 		if (pciide_chansetup(sc, channel, interface) == 0)
   3645 			continue;
   3646 		if ((interface & PCIIDE_CHAN_EN(channel)) == 0) {
   3647 			printf("%s: %s channel ignored (disabled)\n",
   3648 			    sc->sc_wdcdev.sc_dev.dv_xname, cp->name);
   3649 			continue;
   3650 		}
   3651 		/* newer controllers seems to lack the ACER_CHIDS. Sigh */
   3652 		pciide_mapchan(pa, cp, interface, &cmdsize, &ctlsize,
   3653 		     (rev >= 0xC2) ? pciide_pci_intr : acer_pci_intr);
   3654 		if (cp->hw_ok == 0)
   3655 			continue;
   3656 		if (pciide_chan_candisable(cp)) {
   3657 			cr &= ~(PCIIDE_CHAN_EN(channel) << PCI_INTERFACE_SHIFT);
   3658 			pci_conf_write(sc->sc_pc, sc->sc_tag,
   3659 			    PCI_CLASS_REG, cr);
   3660 		}
   3661 		pciide_map_compat_intr(pa, cp, channel, interface);
   3662 		acer_setup_channel(&cp->wdc_channel);
   3663 	}
   3664 }
   3665 
   3666 void
   3667 acer_setup_channel(chp)
   3668 	struct channel_softc *chp;
   3669 {
   3670 	struct ata_drive_datas *drvp;
   3671 	int drive;
   3672 	u_int32_t acer_fifo_udma;
   3673 	u_int32_t idedma_ctl;
   3674 	struct pciide_channel *cp = (struct pciide_channel*)chp;
   3675 	struct pciide_softc *sc = (struct pciide_softc *)cp->wdc_channel.wdc;
   3676 
   3677 	idedma_ctl = 0;
   3678 	acer_fifo_udma = pci_conf_read(sc->sc_pc, sc->sc_tag, ACER_FTH_UDMA);
   3679 	WDCDEBUG_PRINT(("acer_setup_channel: old fifo/udma reg 0x%x\n",
   3680 	    acer_fifo_udma), DEBUG_PROBE);
   3681 	/* setup DMA if needed */
   3682 	pciide_channel_dma_setup(cp);
   3683 
   3684 	if ((chp->ch_drive[0].drive_flags | chp->ch_drive[1].drive_flags) &
   3685 	    DRIVE_UDMA) { /* check 80 pins cable */
   3686 		if (pciide_pci_read(sc->sc_pc, sc->sc_tag, ACER_0x4A) &
   3687 		    ACER_0x4A_80PIN(chp->channel)) {
   3688 			if (chp->ch_drive[0].UDMA_mode > 2)
   3689 				chp->ch_drive[0].UDMA_mode = 2;
   3690 			if (chp->ch_drive[1].UDMA_mode > 2)
   3691 				chp->ch_drive[1].UDMA_mode = 2;
   3692 		}
   3693 	}
   3694 
   3695 	for (drive = 0; drive < 2; drive++) {
   3696 		drvp = &chp->ch_drive[drive];
   3697 		/* If no drive, skip */
   3698 		if ((drvp->drive_flags & DRIVE) == 0)
   3699 			continue;
   3700 		WDCDEBUG_PRINT(("acer_setup_channel: old timings reg for "
   3701 		    "channel %d drive %d 0x%x\n", chp->channel, drive,
   3702 		    pciide_pci_read(sc->sc_pc, sc->sc_tag,
   3703 		    ACER_IDETIM(chp->channel, drive))), DEBUG_PROBE);
   3704 		/* clear FIFO/DMA mode */
   3705 		acer_fifo_udma &= ~(ACER_FTH_OPL(chp->channel, drive, 0x3) |
   3706 		    ACER_UDMA_EN(chp->channel, drive) |
   3707 		    ACER_UDMA_TIM(chp->channel, drive, 0x7));
   3708 
   3709 		/* add timing values, setup DMA if needed */
   3710 		if ((drvp->drive_flags & DRIVE_DMA) == 0 &&
   3711 		    (drvp->drive_flags & DRIVE_UDMA) == 0) {
   3712 			acer_fifo_udma |=
   3713 			    ACER_FTH_OPL(chp->channel, drive, 0x1);
   3714 			goto pio;
   3715 		}
   3716 
   3717 		acer_fifo_udma |= ACER_FTH_OPL(chp->channel, drive, 0x2);
   3718 		if (drvp->drive_flags & DRIVE_UDMA) {
   3719 			/* use Ultra/DMA */
   3720 			drvp->drive_flags &= ~DRIVE_DMA;
   3721 			acer_fifo_udma |= ACER_UDMA_EN(chp->channel, drive);
   3722 			acer_fifo_udma |=
   3723 			    ACER_UDMA_TIM(chp->channel, drive,
   3724 				acer_udma[drvp->UDMA_mode]);
   3725 			/* XXX disable if one drive < UDMA3 ? */
   3726 			if (drvp->UDMA_mode >= 3) {
   3727 				pciide_pci_write(sc->sc_pc, sc->sc_tag,
   3728 				    ACER_0x4B,
   3729 				    pciide_pci_read(sc->sc_pc, sc->sc_tag,
   3730 					ACER_0x4B) | ACER_0x4B_UDMA66);
   3731 			}
   3732 		} else {
   3733 			/*
   3734 			 * use Multiword DMA
   3735 			 * Timings will be used for both PIO and DMA,
   3736 			 * so adjust DMA mode if needed
   3737 			 */
   3738 			if (drvp->PIO_mode > (drvp->DMA_mode + 2))
   3739 				drvp->PIO_mode = drvp->DMA_mode + 2;
   3740 			if (drvp->DMA_mode + 2 > (drvp->PIO_mode))
   3741 				drvp->DMA_mode = (drvp->PIO_mode > 2) ?
   3742 				    drvp->PIO_mode - 2 : 0;
   3743 			if (drvp->DMA_mode == 0)
   3744 				drvp->PIO_mode = 0;
   3745 		}
   3746 		idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
   3747 pio:		pciide_pci_write(sc->sc_pc, sc->sc_tag,
   3748 		    ACER_IDETIM(chp->channel, drive),
   3749 		    acer_pio[drvp->PIO_mode]);
   3750 	}
   3751 	WDCDEBUG_PRINT(("acer_setup_channel: new fifo/udma reg 0x%x\n",
   3752 	    acer_fifo_udma), DEBUG_PROBE);
   3753 	pci_conf_write(sc->sc_pc, sc->sc_tag, ACER_FTH_UDMA, acer_fifo_udma);
   3754 	if (idedma_ctl != 0) {
   3755 		/* Add software bits in status register */
   3756 		bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   3757 		    IDEDMA_CTL + (IDEDMA_SCH_OFFSET * chp->channel),
   3758 		    idedma_ctl);
   3759 	}
   3760 	pciide_print_modes(cp);
   3761 }
   3762 
   3763 int
   3764 acer_pci_intr(arg)
   3765 	void *arg;
   3766 {
   3767 	struct pciide_softc *sc = arg;
   3768 	struct pciide_channel *cp;
   3769 	struct channel_softc *wdc_cp;
   3770 	int i, rv, crv;
   3771 	u_int32_t chids;
   3772 
   3773 	rv = 0;
   3774 	chids = pciide_pci_read(sc->sc_pc, sc->sc_tag, ACER_CHIDS);
   3775 	for (i = 0; i < sc->sc_wdcdev.nchannels; i++) {
   3776 		cp = &sc->pciide_channels[i];
   3777 		wdc_cp = &cp->wdc_channel;
   3778 		/* If a compat channel skip. */
   3779 		if (cp->compat)
   3780 			continue;
   3781 		if (chids & ACER_CHIDS_INT(i)) {
   3782 			crv = wdcintr(wdc_cp);
   3783 			if (crv == 0)
   3784 				printf("%s:%d: bogus intr\n",
   3785 				    sc->sc_wdcdev.sc_dev.dv_xname, i);
   3786 			else
   3787 				rv = 1;
   3788 		}
   3789 	}
   3790 	return rv;
   3791 }
   3792 
   3793 void
   3794 hpt_chip_map(sc, pa)
   3795 	struct pciide_softc *sc;
   3796 	struct pci_attach_args *pa;
   3797 {
   3798 	struct pciide_channel *cp;
   3799 	int i, compatchan, revision;
   3800 	pcireg_t interface;
   3801 	bus_size_t cmdsize, ctlsize;
   3802 
   3803 	if (pciide_chipen(sc, pa) == 0)
   3804 		return;
   3805 	revision = PCI_REVISION(pa->pa_class);
   3806 	printf(": Triones/Highpoint ");
   3807 	if (sc->sc_pp->ide_product == PCI_PRODUCT_TRIONES_HPT374)
   3808 		printf("HPT374 IDE Controller\n");
   3809 	else if (sc->sc_pp->ide_product == PCI_PRODUCT_TRIONES_HPT372)
   3810 		printf("HPT372 IDE Controller\n");
   3811 	else if (sc->sc_pp->ide_product == PCI_PRODUCT_TRIONES_HPT366) {
   3812 		if (revision == HPT372_REV)
   3813 			printf("HPT372 IDE Controller\n");
   3814 		else if (revision == HPT370_REV)
   3815 			printf("HPT370 IDE Controller\n");
   3816 		else if (revision == HPT370A_REV)
   3817 			printf("HPT370A IDE Controller\n");
   3818 		else if (revision == HPT366_REV)
   3819 			printf("HPT366 IDE Controller\n");
   3820 		else
   3821 			printf("unknown HPT IDE controller rev %d\n", revision);
   3822 	} else
   3823 		printf("unknown HPT IDE controller 0x%x\n",
   3824 		    sc->sc_pp->ide_product);
   3825 
   3826 	/*
   3827 	 * when the chip is in native mode it identifies itself as a
   3828 	 * 'misc mass storage'. Fake interface in this case.
   3829 	 */
   3830 	if (PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_MASS_STORAGE_IDE) {
   3831 		interface = PCI_INTERFACE(pa->pa_class);
   3832 	} else {
   3833 		interface = PCIIDE_INTERFACE_BUS_MASTER_DMA |
   3834 		    PCIIDE_INTERFACE_PCI(0);
   3835 		if ((sc->sc_pp->ide_product == PCI_PRODUCT_TRIONES_HPT366 &&
   3836 		    (revision == HPT370_REV || revision == HPT370A_REV ||
   3837 		     revision == HPT372_REV)) ||
   3838 		    sc->sc_pp->ide_product == PCI_PRODUCT_TRIONES_HPT372 ||
   3839 		    sc->sc_pp->ide_product == PCI_PRODUCT_TRIONES_HPT374)
   3840 			interface |= PCIIDE_INTERFACE_PCI(1);
   3841 	}
   3842 
   3843 	printf("%s: bus-master DMA support present",
   3844 		sc->sc_wdcdev.sc_dev.dv_xname);
   3845 	pciide_mapreg_dma(sc, pa);
   3846 	printf("\n");
   3847 	sc->sc_wdcdev.cap = WDC_CAPABILITY_DATA16 | WDC_CAPABILITY_DATA32 |
   3848 	    WDC_CAPABILITY_MODE;
   3849 	if (sc->sc_dma_ok) {
   3850 		sc->sc_wdcdev.cap |= WDC_CAPABILITY_DMA | WDC_CAPABILITY_UDMA;
   3851 		sc->sc_wdcdev.cap |= WDC_CAPABILITY_IRQACK;
   3852 		sc->sc_wdcdev.irqack = pciide_irqack;
   3853 	}
   3854 	sc->sc_wdcdev.PIO_cap = 4;
   3855 	sc->sc_wdcdev.DMA_cap = 2;
   3856 
   3857 	sc->sc_wdcdev.set_modes = hpt_setup_channel;
   3858 	sc->sc_wdcdev.channels = sc->wdc_chanarray;
   3859 	if (sc->sc_pp->ide_product == PCI_PRODUCT_TRIONES_HPT366 &&
   3860 	    revision == HPT366_REV) {
   3861 		sc->sc_wdcdev.UDMA_cap = 4;
   3862 		/*
   3863 		 * The 366 has 2 PCI IDE functions, one for primary and one
   3864 		 * for secondary. So we need to call pciide_mapregs_compat()
   3865 		 * with the real channel
   3866 		 */
   3867 		if (pa->pa_function == 0) {
   3868 			compatchan = 0;
   3869 		} else if (pa->pa_function == 1) {
   3870 			compatchan = 1;
   3871 		} else {
   3872 			printf("%s: unexpected PCI function %d\n",
   3873 			    sc->sc_wdcdev.sc_dev.dv_xname, pa->pa_function);
   3874 			return;
   3875 		}
   3876 		sc->sc_wdcdev.nchannels = 1;
   3877 	} else {
   3878 		sc->sc_wdcdev.nchannels = 2;
   3879 		if (sc->sc_pp->ide_product == PCI_PRODUCT_TRIONES_HPT374 ||
   3880 		    sc->sc_pp->ide_product == PCI_PRODUCT_TRIONES_HPT372 ||
   3881 		    (sc->sc_pp->ide_product == PCI_PRODUCT_TRIONES_HPT366 &&
   3882 		    revision == HPT372_REV))
   3883 			sc->sc_wdcdev.UDMA_cap = 6;
   3884 		else
   3885 			sc->sc_wdcdev.UDMA_cap = 5;
   3886 	}
   3887 	for (i = 0; i < sc->sc_wdcdev.nchannels; i++) {
   3888 		cp = &sc->pciide_channels[i];
   3889 		if (sc->sc_wdcdev.nchannels > 1) {
   3890 			compatchan = i;
   3891 			if((pciide_pci_read(sc->sc_pc, sc->sc_tag,
   3892 			   HPT370_CTRL1(i)) & HPT370_CTRL1_EN) == 0) {
   3893 				printf("%s: %s channel ignored (disabled)\n",
   3894 				    sc->sc_wdcdev.sc_dev.dv_xname, cp->name);
   3895 				continue;
   3896 			}
   3897 		}
   3898 		if (pciide_chansetup(sc, i, interface) == 0)
   3899 			continue;
   3900 		if (interface & PCIIDE_INTERFACE_PCI(i)) {
   3901 			cp->hw_ok = pciide_mapregs_native(pa, cp, &cmdsize,
   3902 			    &ctlsize, hpt_pci_intr);
   3903 		} else {
   3904 			cp->hw_ok = pciide_mapregs_compat(pa, cp, compatchan,
   3905 			    &cmdsize, &ctlsize);
   3906 		}
   3907 		if (cp->hw_ok == 0)
   3908 			return;
   3909 		cp->wdc_channel.data32iot = cp->wdc_channel.cmd_iot;
   3910 		cp->wdc_channel.data32ioh = cp->wdc_channel.cmd_ioh;
   3911 		wdcattach(&cp->wdc_channel);
   3912 		hpt_setup_channel(&cp->wdc_channel);
   3913 	}
   3914 	if ((sc->sc_pp->ide_product == PCI_PRODUCT_TRIONES_HPT366 &&
   3915 	    (revision == HPT370_REV || revision == HPT370A_REV ||
   3916 	     revision == HPT372_REV)) ||
   3917 	    sc->sc_pp->ide_product == PCI_PRODUCT_TRIONES_HPT372 ||
   3918 	    sc->sc_pp->ide_product == PCI_PRODUCT_TRIONES_HPT374) {
   3919 		/*
   3920 		 * HPT370_REV and highter has a bit to disable interrupts,
   3921 		 * make sure to clear it
   3922 		 */
   3923 		pciide_pci_write(sc->sc_pc, sc->sc_tag, HPT_CSEL,
   3924 		    pciide_pci_read(sc->sc_pc, sc->sc_tag, HPT_CSEL) &
   3925 		    ~HPT_CSEL_IRQDIS);
   3926 	}
   3927 	/* set clocks, etc (mandatory on 372/4, optional otherwise) */
   3928 	if ((sc->sc_pp->ide_product == PCI_PRODUCT_TRIONES_HPT366 &&
   3929 	     revision == HPT372_REV ) ||
   3930 	    sc->sc_pp->ide_product == PCI_PRODUCT_TRIONES_HPT372 ||
   3931 	    sc->sc_pp->ide_product == PCI_PRODUCT_TRIONES_HPT374)
   3932 		pciide_pci_write(sc->sc_pc, sc->sc_tag, HPT_SC2,
   3933 		    (pciide_pci_read(sc->sc_pc, sc->sc_tag, HPT_SC2) &
   3934 		     HPT_SC2_MAEN) | HPT_SC2_OSC_EN);
   3935 	return;
   3936 }
   3937 
   3938 void
   3939 hpt_setup_channel(chp)
   3940 	struct channel_softc *chp;
   3941 {
   3942 	struct ata_drive_datas *drvp;
   3943 	int drive;
   3944 	int cable;
   3945 	u_int32_t before, after;
   3946 	u_int32_t idedma_ctl;
   3947 	struct pciide_channel *cp = (struct pciide_channel*)chp;
   3948 	struct pciide_softc *sc = (struct pciide_softc *)cp->wdc_channel.wdc;
   3949 	int revision =
   3950 	     PCI_REVISION(pci_conf_read(sc->sc_pc, sc->sc_tag, PCI_CLASS_REG));
   3951 
   3952 	cable = pciide_pci_read(sc->sc_pc, sc->sc_tag, HPT_CSEL);
   3953 
   3954 	/* setup DMA if needed */
   3955 	pciide_channel_dma_setup(cp);
   3956 
   3957 	idedma_ctl = 0;
   3958 
   3959 	/* Per drive settings */
   3960 	for (drive = 0; drive < 2; drive++) {
   3961 		drvp = &chp->ch_drive[drive];
   3962 		/* If no drive, skip */
   3963 		if ((drvp->drive_flags & DRIVE) == 0)
   3964 			continue;
   3965 		before = pci_conf_read(sc->sc_pc, sc->sc_tag,
   3966 					HPT_IDETIM(chp->channel, drive));
   3967 
   3968 		/* add timing values, setup DMA if needed */
   3969 		if (drvp->drive_flags & DRIVE_UDMA) {
   3970 			/* use Ultra/DMA */
   3971 			drvp->drive_flags &= ~DRIVE_DMA;
   3972 			if ((cable & HPT_CSEL_CBLID(chp->channel)) != 0 &&
   3973 			    drvp->UDMA_mode > 2)
   3974 				drvp->UDMA_mode = 2;
   3975 			switch (sc->sc_pp->ide_product) {
   3976 			case PCI_PRODUCT_TRIONES_HPT374:
   3977 				after = hpt374_udma[drvp->UDMA_mode];
   3978 				break;
   3979 			case PCI_PRODUCT_TRIONES_HPT372:
   3980 				after = hpt372_udma[drvp->UDMA_mode];
   3981 				break;
   3982 			case PCI_PRODUCT_TRIONES_HPT366:
   3983 			default:
   3984 				switch(revision) {
   3985 				case HPT372_REV:
   3986 					after = hpt372_udma[drvp->UDMA_mode];
   3987 					break;
   3988 				case HPT370_REV:
   3989 				case HPT370A_REV:
   3990 					after = hpt370_udma[drvp->UDMA_mode];
   3991 					break;
   3992 				case HPT366_REV:
   3993 				default:
   3994 					after = hpt366_udma[drvp->UDMA_mode];
   3995 					break;
   3996 				}
   3997 			}
   3998 			idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
   3999 		} else if (drvp->drive_flags & DRIVE_DMA) {
   4000 			/*
   4001 			 * use Multiword DMA.
   4002 			 * Timings will be used for both PIO and DMA, so adjust
   4003 			 * DMA mode if needed
   4004 			 */
   4005 			if (drvp->PIO_mode >= 3 &&
   4006 			    (drvp->DMA_mode + 2) > drvp->PIO_mode) {
   4007 				drvp->DMA_mode = drvp->PIO_mode - 2;
   4008 			}
   4009 			switch (sc->sc_pp->ide_product) {
   4010 			case PCI_PRODUCT_TRIONES_HPT374:
   4011 				after = hpt374_dma[drvp->DMA_mode];
   4012 				break;
   4013 			case PCI_PRODUCT_TRIONES_HPT372:
   4014 				after = hpt372_dma[drvp->DMA_mode];
   4015 				break;
   4016 			case PCI_PRODUCT_TRIONES_HPT366:
   4017 			default:
   4018 				switch(revision) {
   4019 				case HPT372_REV:
   4020 					after = hpt372_dma[drvp->DMA_mode];
   4021 					break;
   4022 				case HPT370_REV:
   4023 				case HPT370A_REV:
   4024 					after = hpt370_dma[drvp->DMA_mode];
   4025 					break;
   4026 				case HPT366_REV:
   4027 				default:
   4028 					after = hpt366_dma[drvp->DMA_mode];
   4029 					break;
   4030 				}
   4031 			}
   4032 			idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
   4033 		} else {
   4034 			/* PIO only */
   4035 			switch (sc->sc_pp->ide_product) {
   4036 			case PCI_PRODUCT_TRIONES_HPT374:
   4037 				after = hpt374_pio[drvp->PIO_mode];
   4038 				break;
   4039 			case PCI_PRODUCT_TRIONES_HPT372:
   4040 				after = hpt372_pio[drvp->PIO_mode];
   4041 				break;
   4042 			case PCI_PRODUCT_TRIONES_HPT366:
   4043 			default:
   4044 				switch(revision) {
   4045 				case HPT372_REV:
   4046 					after = hpt372_pio[drvp->PIO_mode];
   4047 					break;
   4048 				case HPT370_REV:
   4049 				case HPT370A_REV:
   4050 					after = hpt370_pio[drvp->PIO_mode];
   4051 					break;
   4052 				case HPT366_REV:
   4053 				default:
   4054 					after = hpt366_pio[drvp->PIO_mode];
   4055 					break;
   4056 				}
   4057 			}
   4058 		}
   4059 		pci_conf_write(sc->sc_pc, sc->sc_tag,
   4060 		    HPT_IDETIM(chp->channel, drive), after);
   4061 		WDCDEBUG_PRINT(("%s: bus speed register set to 0x%08x "
   4062 		    "(BIOS 0x%08x)\n", drvp->drv_softc->dv_xname,
   4063 		    after, before), DEBUG_PROBE);
   4064 	}
   4065 	if (idedma_ctl != 0) {
   4066 		/* Add software bits in status register */
   4067 		bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   4068 		    IDEDMA_CTL + (IDEDMA_SCH_OFFSET * chp->channel),
   4069 		    idedma_ctl);
   4070 	}
   4071 	pciide_print_modes(cp);
   4072 }
   4073 
   4074 int
   4075 hpt_pci_intr(arg)
   4076 	void *arg;
   4077 {
   4078 	struct pciide_softc *sc = arg;
   4079 	struct pciide_channel *cp;
   4080 	struct channel_softc *wdc_cp;
   4081 	int rv = 0;
   4082 	int dmastat, i, crv;
   4083 
   4084 	for (i = 0; i < sc->sc_wdcdev.nchannels; i++) {
   4085 		dmastat = bus_space_read_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   4086 		    IDEDMA_CTL + IDEDMA_SCH_OFFSET * i);
   4087 		if((dmastat & ( IDEDMA_CTL_ACT | IDEDMA_CTL_INTR)) !=
   4088 		    IDEDMA_CTL_INTR)
   4089 			continue;
   4090 		cp = &sc->pciide_channels[i];
   4091 		wdc_cp = &cp->wdc_channel;
   4092 		crv = wdcintr(wdc_cp);
   4093 		if (crv == 0) {
   4094 			printf("%s:%d: bogus intr\n",
   4095 			    sc->sc_wdcdev.sc_dev.dv_xname, i);
   4096 			bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   4097 			    IDEDMA_CTL + IDEDMA_SCH_OFFSET * i, dmastat);
   4098 		} else
   4099 			rv = 1;
   4100 	}
   4101 	return rv;
   4102 }
   4103 
   4104 
   4105 /* Macros to test product */
   4106 #define PDC_IS_262(sc)							\
   4107 	((sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_ULTRA66 ||	\
   4108 	(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_ULTRA100 ||	\
   4109 	(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_ULTRA100X ||	\
   4110 	(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_ULTRA100TX2 ||	\
   4111 	(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_ULTRA100TX2v2 || \
   4112 	(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_ULTRA133 ||	\
   4113 	(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_ULTRA133TX2 ||	\
   4114 	(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_MBULTRA133 || \
   4115 	(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_ULTRA133TX2v2 || \
   4116 	(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_FASTTRAK133LITE)
   4117 #define PDC_IS_265(sc)							\
   4118 	((sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_ULTRA100 ||	\
   4119 	(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_ULTRA100X ||	\
   4120 	(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_ULTRA100TX2 ||	\
   4121 	(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_ULTRA100TX2v2 || \
   4122 	(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_ULTRA133 ||	\
   4123 	(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_ULTRA133TX2 ||	\
   4124 	(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_MBULTRA133 || \
   4125 	(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_ULTRA133TX2v2 || \
   4126 	(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_FASTTRAK133LITE)
   4127 #define PDC_IS_268(sc)							\
   4128 	((sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_ULTRA100TX2 ||	\
   4129 	(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_ULTRA100TX2v2 || \
   4130 	(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_ULTRA133 ||	\
   4131 	(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_ULTRA133TX2 ||	\
   4132 	(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_MBULTRA133 || \
   4133 	(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_ULTRA133TX2v2 || \
   4134 	(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_FASTTRAK133LITE)
   4135 #define PDC_IS_276(sc)							\
   4136 	((sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_ULTRA133 ||	\
   4137 	(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_ULTRA133TX2 ||	\
   4138 	(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_MBULTRA133 || \
   4139 	(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_ULTRA133TX2v2 || \
   4140 	(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_FASTTRAK133LITE)
   4141 
   4142 void
   4143 pdc202xx_chip_map(sc, pa)
   4144 	struct pciide_softc *sc;
   4145 	struct pci_attach_args *pa;
   4146 {
   4147 	struct pciide_channel *cp;
   4148 	int channel;
   4149 	pcireg_t interface, st, mode;
   4150 	bus_size_t cmdsize, ctlsize;
   4151 
   4152 	if (!PDC_IS_268(sc)) {
   4153 		st = pci_conf_read(sc->sc_pc, sc->sc_tag, PDC2xx_STATE);
   4154 		WDCDEBUG_PRINT(("pdc202xx_setup_chip: controller state 0x%x\n",
   4155 		    st), DEBUG_PROBE);
   4156 	}
   4157 	if (pciide_chipen(sc, pa) == 0)
   4158 		return;
   4159 
   4160 	/* turn off  RAID mode */
   4161 	if (!PDC_IS_268(sc))
   4162 		st &= ~PDC2xx_STATE_IDERAID;
   4163 
   4164 	/*
   4165 	 * can't rely on the PCI_CLASS_REG content if the chip was in raid
   4166 	 * mode. We have to fake interface
   4167 	 */
   4168 	interface = PCIIDE_INTERFACE_SETTABLE(0) | PCIIDE_INTERFACE_SETTABLE(1);
   4169 	if (PDC_IS_268(sc) || (st & PDC2xx_STATE_NATIVE))
   4170 		interface |= PCIIDE_INTERFACE_PCI(0) | PCIIDE_INTERFACE_PCI(1);
   4171 
   4172 	printf("%s: bus-master DMA support present",
   4173 	    sc->sc_wdcdev.sc_dev.dv_xname);
   4174 	pciide_mapreg_dma(sc, pa);
   4175 	printf("\n");
   4176 	sc->sc_wdcdev.cap = WDC_CAPABILITY_DATA16 | WDC_CAPABILITY_DATA32 |
   4177 	    WDC_CAPABILITY_MODE;
   4178 	if (sc->sc_dma_ok) {
   4179 		sc->sc_wdcdev.cap |= WDC_CAPABILITY_DMA | WDC_CAPABILITY_UDMA;
   4180 		sc->sc_wdcdev.cap |= WDC_CAPABILITY_IRQACK;
   4181 		sc->sc_wdcdev.irqack = pciide_irqack;
   4182 	}
   4183 	if (PCI_CLASS(pa->pa_class) == PCI_CLASS_MASS_STORAGE &&
   4184 	    PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_MASS_STORAGE_RAID)
   4185 		sc->sc_wdcdev.cap |= WDC_CAPABILITY_RAID;
   4186 	sc->sc_wdcdev.PIO_cap = 4;
   4187 	sc->sc_wdcdev.DMA_cap = 2;
   4188 	if (PDC_IS_276(sc))
   4189 		sc->sc_wdcdev.UDMA_cap = 6;
   4190 	else if (PDC_IS_265(sc))
   4191 		sc->sc_wdcdev.UDMA_cap = 5;
   4192 	else if (PDC_IS_262(sc))
   4193 		sc->sc_wdcdev.UDMA_cap = 4;
   4194 	else
   4195 		sc->sc_wdcdev.UDMA_cap = 2;
   4196 	sc->sc_wdcdev.set_modes = PDC_IS_268(sc) ?
   4197 			pdc20268_setup_channel : pdc202xx_setup_channel;
   4198 	sc->sc_wdcdev.channels = sc->wdc_chanarray;
   4199 	sc->sc_wdcdev.nchannels = PCIIDE_NUM_CHANNELS;
   4200 
   4201 	if (!PDC_IS_268(sc)) {
   4202 		/* setup failsafe defaults */
   4203 		mode = 0;
   4204 		mode = PDC2xx_TIM_SET_PA(mode, pdc2xx_pa[0]);
   4205 		mode = PDC2xx_TIM_SET_PB(mode, pdc2xx_pb[0]);
   4206 		mode = PDC2xx_TIM_SET_MB(mode, pdc2xx_dma_mb[0]);
   4207 		mode = PDC2xx_TIM_SET_MC(mode, pdc2xx_dma_mc[0]);
   4208 		for (channel = 0;
   4209 		     channel < sc->sc_wdcdev.nchannels;
   4210 		     channel++) {
   4211 			WDCDEBUG_PRINT(("pdc202xx_setup_chip: channel %d "
   4212 			    "drive 0 initial timings  0x%x, now 0x%x\n",
   4213 			    channel, pci_conf_read(sc->sc_pc, sc->sc_tag,
   4214 			    PDC2xx_TIM(channel, 0)), mode | PDC2xx_TIM_IORDYp),
   4215 			    DEBUG_PROBE);
   4216 			pci_conf_write(sc->sc_pc, sc->sc_tag,
   4217 			    PDC2xx_TIM(channel, 0), mode | PDC2xx_TIM_IORDYp);
   4218 			WDCDEBUG_PRINT(("pdc202xx_setup_chip: channel %d "
   4219 			    "drive 1 initial timings  0x%x, now 0x%x\n",
   4220 			    channel, pci_conf_read(sc->sc_pc, sc->sc_tag,
   4221 			    PDC2xx_TIM(channel, 1)), mode), DEBUG_PROBE);
   4222 			pci_conf_write(sc->sc_pc, sc->sc_tag,
   4223 			    PDC2xx_TIM(channel, 1), mode);
   4224 		}
   4225 
   4226 		mode = PDC2xx_SCR_DMA;
   4227 		if (PDC_IS_262(sc)) {
   4228 			mode = PDC2xx_SCR_SET_GEN(mode, PDC262_SCR_GEN_LAT);
   4229 		} else {
   4230 			/* the BIOS set it up this way */
   4231 			mode = PDC2xx_SCR_SET_GEN(mode, 0x1);
   4232 		}
   4233 		mode = PDC2xx_SCR_SET_I2C(mode, 0x3); /* ditto */
   4234 		mode = PDC2xx_SCR_SET_POLL(mode, 0x1); /* ditto */
   4235 		WDCDEBUG_PRINT(("pdc202xx_setup_chip: initial SCR  0x%x, "
   4236 		    "now 0x%x\n",
   4237 		    bus_space_read_4(sc->sc_dma_iot, sc->sc_dma_ioh,
   4238 			PDC2xx_SCR),
   4239 		    mode), DEBUG_PROBE);
   4240 		bus_space_write_4(sc->sc_dma_iot, sc->sc_dma_ioh,
   4241 		    PDC2xx_SCR, mode);
   4242 
   4243 		/* controller initial state register is OK even without BIOS */
   4244 		/* Set DMA mode to IDE DMA compatibility */
   4245 		mode =
   4246 		    bus_space_read_1(sc->sc_dma_iot, sc->sc_dma_ioh, PDC2xx_PM);
   4247 		WDCDEBUG_PRINT(("pdc202xx_setup_chip: primary mode 0x%x", mode),
   4248 		    DEBUG_PROBE);
   4249 		bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh, PDC2xx_PM,
   4250 		    mode | 0x1);
   4251 		mode =
   4252 		    bus_space_read_1(sc->sc_dma_iot, sc->sc_dma_ioh, PDC2xx_SM);
   4253 		WDCDEBUG_PRINT((", secondary mode 0x%x\n", mode ), DEBUG_PROBE);
   4254 		bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh, PDC2xx_SM,
   4255 		    mode | 0x1);
   4256 	}
   4257 
   4258 	for (channel = 0; channel < sc->sc_wdcdev.nchannels; channel++) {
   4259 		cp = &sc->pciide_channels[channel];
   4260 		if (pciide_chansetup(sc, channel, interface) == 0)
   4261 			continue;
   4262 		if (!PDC_IS_268(sc) && (st & (PDC_IS_262(sc) ?
   4263 		    PDC262_STATE_EN(channel):PDC246_STATE_EN(channel))) == 0) {
   4264 			printf("%s: %s channel ignored (disabled)\n",
   4265 			    sc->sc_wdcdev.sc_dev.dv_xname, cp->name);
   4266 			continue;
   4267 		}
   4268 		if (PDC_IS_265(sc))
   4269 			pciide_mapchan(pa, cp, interface, &cmdsize, &ctlsize,
   4270 			    pdc20265_pci_intr);
   4271 		else
   4272 			pciide_mapchan(pa, cp, interface, &cmdsize, &ctlsize,
   4273 			    pdc202xx_pci_intr);
   4274 		if (cp->hw_ok == 0)
   4275 			continue;
   4276 		if (!PDC_IS_268(sc) && pciide_chan_candisable(cp))
   4277 			st &= ~(PDC_IS_262(sc) ?
   4278 			    PDC262_STATE_EN(channel):PDC246_STATE_EN(channel));
   4279 		pciide_map_compat_intr(pa, cp, channel, interface);
   4280 		sc->sc_wdcdev.set_modes(&cp->wdc_channel);
   4281 	}
   4282 	if (!PDC_IS_268(sc)) {
   4283 		WDCDEBUG_PRINT(("pdc202xx_setup_chip: new controller state "
   4284 		    "0x%x\n", st), DEBUG_PROBE);
   4285 		pci_conf_write(sc->sc_pc, sc->sc_tag, PDC2xx_STATE, st);
   4286 	}
   4287 	return;
   4288 }
   4289 
   4290 void
   4291 pdc202xx_setup_channel(chp)
   4292 	struct channel_softc *chp;
   4293 {
   4294 	struct ata_drive_datas *drvp;
   4295 	int drive;
   4296 	pcireg_t mode, st;
   4297 	u_int32_t idedma_ctl, scr, atapi;
   4298 	struct pciide_channel *cp = (struct pciide_channel*)chp;
   4299 	struct pciide_softc *sc = (struct pciide_softc *)cp->wdc_channel.wdc;
   4300 	int channel = chp->channel;
   4301 
   4302 	/* setup DMA if needed */
   4303 	pciide_channel_dma_setup(cp);
   4304 
   4305 	idedma_ctl = 0;
   4306 	WDCDEBUG_PRINT(("pdc202xx_setup_channel %s: scr 0x%x\n",
   4307 	    sc->sc_wdcdev.sc_dev.dv_xname,
   4308 	    bus_space_read_1(sc->sc_dma_iot, sc->sc_dma_ioh, PDC262_U66)),
   4309 	    DEBUG_PROBE);
   4310 
   4311 	/* Per channel settings */
   4312 	if (PDC_IS_262(sc)) {
   4313 		scr = bus_space_read_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   4314 		    PDC262_U66);
   4315 		st = pci_conf_read(sc->sc_pc, sc->sc_tag, PDC2xx_STATE);
   4316 		/* Trim UDMA mode */
   4317 		if ((st & PDC262_STATE_80P(channel)) != 0 ||
   4318 		    (chp->ch_drive[0].drive_flags & DRIVE_UDMA &&
   4319 		    chp->ch_drive[0].UDMA_mode <= 2) ||
   4320 		    (chp->ch_drive[1].drive_flags & DRIVE_UDMA &&
   4321 		    chp->ch_drive[1].UDMA_mode <= 2)) {
   4322 			if (chp->ch_drive[0].UDMA_mode > 2)
   4323 				chp->ch_drive[0].UDMA_mode = 2;
   4324 			if (chp->ch_drive[1].UDMA_mode > 2)
   4325 				chp->ch_drive[1].UDMA_mode = 2;
   4326 		}
   4327 		/* Set U66 if needed */
   4328 		if ((chp->ch_drive[0].drive_flags & DRIVE_UDMA &&
   4329 		    chp->ch_drive[0].UDMA_mode > 2) ||
   4330 		    (chp->ch_drive[1].drive_flags & DRIVE_UDMA &&
   4331 		    chp->ch_drive[1].UDMA_mode > 2))
   4332 			scr |= PDC262_U66_EN(channel);
   4333 		else
   4334 			scr &= ~PDC262_U66_EN(channel);
   4335 		bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   4336 		    PDC262_U66, scr);
   4337 		WDCDEBUG_PRINT(("pdc202xx_setup_channel %s:%d: ATAPI 0x%x\n",
   4338 		    sc->sc_wdcdev.sc_dev.dv_xname, channel,
   4339 		    bus_space_read_4(sc->sc_dma_iot, sc->sc_dma_ioh,
   4340 		    PDC262_ATAPI(channel))), DEBUG_PROBE);
   4341 		if (chp->ch_drive[0].drive_flags & DRIVE_ATAPI ||
   4342 			chp->ch_drive[1].drive_flags & DRIVE_ATAPI) {
   4343 			if (((chp->ch_drive[0].drive_flags & DRIVE_UDMA) &&
   4344 			    !(chp->ch_drive[1].drive_flags & DRIVE_UDMA) &&
   4345 			    (chp->ch_drive[1].drive_flags & DRIVE_DMA)) ||
   4346 			    ((chp->ch_drive[1].drive_flags & DRIVE_UDMA) &&
   4347 			    !(chp->ch_drive[0].drive_flags & DRIVE_UDMA) &&
   4348 			    (chp->ch_drive[0].drive_flags & DRIVE_DMA)))
   4349 				atapi = 0;
   4350 			else
   4351 				atapi = PDC262_ATAPI_UDMA;
   4352 			bus_space_write_4(sc->sc_dma_iot, sc->sc_dma_ioh,
   4353 			    PDC262_ATAPI(channel), atapi);
   4354 		}
   4355 	}
   4356 	for (drive = 0; drive < 2; drive++) {
   4357 		drvp = &chp->ch_drive[drive];
   4358 		/* If no drive, skip */
   4359 		if ((drvp->drive_flags & DRIVE) == 0)
   4360 			continue;
   4361 		mode = 0;
   4362 		if (drvp->drive_flags & DRIVE_UDMA) {
   4363 			/* use Ultra/DMA */
   4364 			drvp->drive_flags &= ~DRIVE_DMA;
   4365 			mode = PDC2xx_TIM_SET_MB(mode,
   4366 			    pdc2xx_udma_mb[drvp->UDMA_mode]);
   4367 			mode = PDC2xx_TIM_SET_MC(mode,
   4368 			    pdc2xx_udma_mc[drvp->UDMA_mode]);
   4369 			idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
   4370 		} else if (drvp->drive_flags & DRIVE_DMA) {
   4371 			mode = PDC2xx_TIM_SET_MB(mode,
   4372 			    pdc2xx_dma_mb[drvp->DMA_mode]);
   4373 			mode = PDC2xx_TIM_SET_MC(mode,
   4374 			    pdc2xx_dma_mc[drvp->DMA_mode]);
   4375 			idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
   4376 		} else {
   4377 			mode = PDC2xx_TIM_SET_MB(mode,
   4378 			    pdc2xx_dma_mb[0]);
   4379 			mode = PDC2xx_TIM_SET_MC(mode,
   4380 			    pdc2xx_dma_mc[0]);
   4381 		}
   4382 		mode = PDC2xx_TIM_SET_PA(mode, pdc2xx_pa[drvp->PIO_mode]);
   4383 		mode = PDC2xx_TIM_SET_PB(mode, pdc2xx_pb[drvp->PIO_mode]);
   4384 		if (drvp->drive_flags & DRIVE_ATA)
   4385 			mode |= PDC2xx_TIM_PRE;
   4386 		mode |= PDC2xx_TIM_SYNC | PDC2xx_TIM_ERRDY;
   4387 		if (drvp->PIO_mode >= 3) {
   4388 			mode |= PDC2xx_TIM_IORDY;
   4389 			if (drive == 0)
   4390 				mode |= PDC2xx_TIM_IORDYp;
   4391 		}
   4392 		WDCDEBUG_PRINT(("pdc202xx_setup_channel: %s:%d:%d "
   4393 		    "timings 0x%x\n",
   4394 		    sc->sc_wdcdev.sc_dev.dv_xname,
   4395 		    chp->channel, drive, mode), DEBUG_PROBE);
   4396 		pci_conf_write(sc->sc_pc, sc->sc_tag,
   4397 		    PDC2xx_TIM(chp->channel, drive), mode);
   4398 	}
   4399 	if (idedma_ctl != 0) {
   4400 		/* Add software bits in status register */
   4401 		bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   4402 		    IDEDMA_CTL + (IDEDMA_SCH_OFFSET * chp->channel),
   4403 		    idedma_ctl);
   4404 	}
   4405 	pciide_print_modes(cp);
   4406 }
   4407 
   4408 void
   4409 pdc20268_setup_channel(chp)
   4410 	struct channel_softc *chp;
   4411 {
   4412 	struct ata_drive_datas *drvp;
   4413 	int drive;
   4414 	u_int32_t idedma_ctl;
   4415 	struct pciide_channel *cp = (struct pciide_channel*)chp;
   4416 	struct pciide_softc *sc = (struct pciide_softc *)cp->wdc_channel.wdc;
   4417 	int u100;
   4418 
   4419 	/* setup DMA if needed */
   4420 	pciide_channel_dma_setup(cp);
   4421 
   4422 	idedma_ctl = 0;
   4423 
   4424 	/* I don't know what this is for, FreeBSD does it ... */
   4425 	bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   4426 	    IDEDMA_CMD + 0x1, 0x0b);
   4427 
   4428 	/*
   4429 	 * I don't know what this is for; FreeBSD checks this ... this is not
   4430 	 * cable type detect.
   4431 	 */
   4432 	u100 = (bus_space_read_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   4433 	    IDEDMA_CMD + 0x3) & 0x04) ? 0 : 1;
   4434 
   4435 	for (drive = 0; drive < 2; drive++) {
   4436 		drvp = &chp->ch_drive[drive];
   4437 		/* If no drive, skip */
   4438 		if ((drvp->drive_flags & DRIVE) == 0)
   4439 			continue;
   4440 		if (drvp->drive_flags & DRIVE_UDMA) {
   4441 			/* use Ultra/DMA */
   4442 			drvp->drive_flags &= ~DRIVE_DMA;
   4443 			idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
   4444 			if (drvp->UDMA_mode > 2 && u100 == 0)
   4445 				drvp->UDMA_mode = 2;
   4446 		} else if (drvp->drive_flags & DRIVE_DMA) {
   4447 			idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
   4448 		}
   4449 	}
   4450 	/* nothing to do to setup modes, the controller snoop SET_FEATURE cmd */
   4451 	if (idedma_ctl != 0) {
   4452 		/* Add software bits in status register */
   4453 		bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   4454 		    IDEDMA_CTL + (IDEDMA_SCH_OFFSET * chp->channel),
   4455 		    idedma_ctl);
   4456 	}
   4457 	pciide_print_modes(cp);
   4458 }
   4459 
   4460 int
   4461 pdc202xx_pci_intr(arg)
   4462 	void *arg;
   4463 {
   4464 	struct pciide_softc *sc = arg;
   4465 	struct pciide_channel *cp;
   4466 	struct channel_softc *wdc_cp;
   4467 	int i, rv, crv;
   4468 	u_int32_t scr;
   4469 
   4470 	rv = 0;
   4471 	scr = bus_space_read_4(sc->sc_dma_iot, sc->sc_dma_ioh, PDC2xx_SCR);
   4472 	for (i = 0; i < sc->sc_wdcdev.nchannels; i++) {
   4473 		cp = &sc->pciide_channels[i];
   4474 		wdc_cp = &cp->wdc_channel;
   4475 		/* If a compat channel skip. */
   4476 		if (cp->compat)
   4477 			continue;
   4478 		if (scr & PDC2xx_SCR_INT(i)) {
   4479 			crv = wdcintr(wdc_cp);
   4480 			if (crv == 0)
   4481 				printf("%s:%d: bogus intr (reg 0x%x)\n",
   4482 				    sc->sc_wdcdev.sc_dev.dv_xname, i, scr);
   4483 			else
   4484 				rv = 1;
   4485 		}
   4486 	}
   4487 	return rv;
   4488 }
   4489 
   4490 int
   4491 pdc20265_pci_intr(arg)
   4492 	void *arg;
   4493 {
   4494 	struct pciide_softc *sc = arg;
   4495 	struct pciide_channel *cp;
   4496 	struct channel_softc *wdc_cp;
   4497 	int i, rv, crv;
   4498 	u_int32_t dmastat;
   4499 
   4500 	rv = 0;
   4501 	for (i = 0; i < sc->sc_wdcdev.nchannels; i++) {
   4502 		cp = &sc->pciide_channels[i];
   4503 		wdc_cp = &cp->wdc_channel;
   4504 		/* If a compat channel skip. */
   4505 		if (cp->compat)
   4506 			continue;
   4507 		/*
   4508 		 * The Ultra/100 seems to assert PDC2xx_SCR_INT * spuriously,
   4509 		 * however it asserts INT in IDEDMA_CTL even for non-DMA ops.
   4510 		 * So use it instead (requires 2 reg reads instead of 1,
   4511 		 * but we can't do it another way).
   4512 		 */
   4513 		dmastat = bus_space_read_1(sc->sc_dma_iot,
   4514 		    sc->sc_dma_ioh, IDEDMA_CTL + IDEDMA_SCH_OFFSET * i);
   4515 		if((dmastat & IDEDMA_CTL_INTR) == 0)
   4516 			continue;
   4517 		crv = wdcintr(wdc_cp);
   4518 		if (crv == 0)
   4519 			printf("%s:%d: bogus intr\n",
   4520 			    sc->sc_wdcdev.sc_dev.dv_xname, i);
   4521 		else
   4522 			rv = 1;
   4523 	}
   4524 	return rv;
   4525 }
   4526 
   4527 void
   4528 opti_chip_map(sc, pa)
   4529 	struct pciide_softc *sc;
   4530 	struct pci_attach_args *pa;
   4531 {
   4532 	struct pciide_channel *cp;
   4533 	bus_size_t cmdsize, ctlsize;
   4534 	pcireg_t interface;
   4535 	u_int8_t init_ctrl;
   4536 	int channel;
   4537 
   4538 	if (pciide_chipen(sc, pa) == 0)
   4539 		return;
   4540 	printf("%s: bus-master DMA support present",
   4541 	    sc->sc_wdcdev.sc_dev.dv_xname);
   4542 
   4543 	/*
   4544 	 * XXXSCW:
   4545 	 * There seem to be a couple of buggy revisions/implementations
   4546 	 * of the OPTi pciide chipset. This kludge seems to fix one of
   4547 	 * the reported problems (PR/11644) but still fails for the
   4548 	 * other (PR/13151), although the latter may be due to other
   4549 	 * issues too...
   4550 	 */
   4551 	if (PCI_REVISION(pa->pa_class) <= 0x12) {
   4552 		printf(" but disabled due to chip rev. <= 0x12");
   4553 		sc->sc_dma_ok = 0;
   4554 	} else
   4555 		pciide_mapreg_dma(sc, pa);
   4556 
   4557 	printf("\n");
   4558 
   4559 	sc->sc_wdcdev.cap = WDC_CAPABILITY_DATA32 | WDC_CAPABILITY_DATA16 |
   4560 		WDC_CAPABILITY_MODE;
   4561 	sc->sc_wdcdev.PIO_cap = 4;
   4562 	if (sc->sc_dma_ok) {
   4563 		sc->sc_wdcdev.cap |= WDC_CAPABILITY_DMA | WDC_CAPABILITY_IRQACK;
   4564 		sc->sc_wdcdev.irqack = pciide_irqack;
   4565 		sc->sc_wdcdev.DMA_cap = 2;
   4566 	}
   4567 	sc->sc_wdcdev.set_modes = opti_setup_channel;
   4568 
   4569 	sc->sc_wdcdev.channels = sc->wdc_chanarray;
   4570 	sc->sc_wdcdev.nchannels = PCIIDE_NUM_CHANNELS;
   4571 
   4572 	init_ctrl = pciide_pci_read(sc->sc_pc, sc->sc_tag,
   4573 	    OPTI_REG_INIT_CONTROL);
   4574 
   4575 	interface = PCI_INTERFACE(pa->pa_class);
   4576 
   4577 	for (channel = 0; channel < sc->sc_wdcdev.nchannels; channel++) {
   4578 		cp = &sc->pciide_channels[channel];
   4579 		if (pciide_chansetup(sc, channel, interface) == 0)
   4580 			continue;
   4581 		if (channel == 1 &&
   4582 		    (init_ctrl & OPTI_INIT_CONTROL_CH2_DISABLE) != 0) {
   4583 			printf("%s: %s channel ignored (disabled)\n",
   4584 			    sc->sc_wdcdev.sc_dev.dv_xname, cp->name);
   4585 			continue;
   4586 		}
   4587 		pciide_mapchan(pa, cp, interface, &cmdsize, &ctlsize,
   4588 		    pciide_pci_intr);
   4589 		if (cp->hw_ok == 0)
   4590 			continue;
   4591 		pciide_map_compat_intr(pa, cp, channel, interface);
   4592 		if (cp->hw_ok == 0)
   4593 			continue;
   4594 		opti_setup_channel(&cp->wdc_channel);
   4595 	}
   4596 }
   4597 
   4598 void
   4599 opti_setup_channel(chp)
   4600 	struct channel_softc *chp;
   4601 {
   4602 	struct ata_drive_datas *drvp;
   4603 	struct pciide_channel *cp = (struct pciide_channel*)chp;
   4604 	struct pciide_softc *sc = (struct pciide_softc *)cp->wdc_channel.wdc;
   4605 	int drive, spd;
   4606 	int mode[2];
   4607 	u_int8_t rv, mr;
   4608 
   4609 	/*
   4610 	 * The `Delay' and `Address Setup Time' fields of the
   4611 	 * Miscellaneous Register are always zero initially.
   4612 	 */
   4613 	mr = opti_read_config(chp, OPTI_REG_MISC) & ~OPTI_MISC_INDEX_MASK;
   4614 	mr &= ~(OPTI_MISC_DELAY_MASK |
   4615 		OPTI_MISC_ADDR_SETUP_MASK |
   4616 		OPTI_MISC_INDEX_MASK);
   4617 
   4618 	/* Prime the control register before setting timing values */
   4619 	opti_write_config(chp, OPTI_REG_CONTROL, OPTI_CONTROL_DISABLE);
   4620 
   4621 	/* Determine the clockrate of the PCIbus the chip is attached to */
   4622 	spd = (int) opti_read_config(chp, OPTI_REG_STRAP);
   4623 	spd &= OPTI_STRAP_PCI_SPEED_MASK;
   4624 
   4625 	/* setup DMA if needed */
   4626 	pciide_channel_dma_setup(cp);
   4627 
   4628 	for (drive = 0; drive < 2; drive++) {
   4629 		drvp = &chp->ch_drive[drive];
   4630 		/* If no drive, skip */
   4631 		if ((drvp->drive_flags & DRIVE) == 0) {
   4632 			mode[drive] = -1;
   4633 			continue;
   4634 		}
   4635 
   4636 		if ((drvp->drive_flags & DRIVE_DMA)) {
   4637 			/*
   4638 			 * Timings will be used for both PIO and DMA,
   4639 			 * so adjust DMA mode if needed
   4640 			 */
   4641 			if (drvp->PIO_mode > (drvp->DMA_mode + 2))
   4642 				drvp->PIO_mode = drvp->DMA_mode + 2;
   4643 			if (drvp->DMA_mode + 2 > (drvp->PIO_mode))
   4644 				drvp->DMA_mode = (drvp->PIO_mode > 2) ?
   4645 				    drvp->PIO_mode - 2 : 0;
   4646 			if (drvp->DMA_mode == 0)
   4647 				drvp->PIO_mode = 0;
   4648 
   4649 			mode[drive] = drvp->DMA_mode + 5;
   4650 		} else
   4651 			mode[drive] = drvp->PIO_mode;
   4652 
   4653 		if (drive && mode[0] >= 0 &&
   4654 		    (opti_tim_as[spd][mode[0]] != opti_tim_as[spd][mode[1]])) {
   4655 			/*
   4656 			 * Can't have two drives using different values
   4657 			 * for `Address Setup Time'.
   4658 			 * Slow down the faster drive to compensate.
   4659 			 */
   4660 			int d = (opti_tim_as[spd][mode[0]] >
   4661 				 opti_tim_as[spd][mode[1]]) ?  0 : 1;
   4662 
   4663 			mode[d] = mode[1-d];
   4664 			chp->ch_drive[d].PIO_mode = chp->ch_drive[1-d].PIO_mode;
   4665 			chp->ch_drive[d].DMA_mode = 0;
   4666 			chp->ch_drive[d].drive_flags &= ~DRIVE_DMA;
   4667 		}
   4668 	}
   4669 
   4670 	for (drive = 0; drive < 2; drive++) {
   4671 		int m;
   4672 		if ((m = mode[drive]) < 0)
   4673 			continue;
   4674 
   4675 		/* Set the Address Setup Time and select appropriate index */
   4676 		rv = opti_tim_as[spd][m] << OPTI_MISC_ADDR_SETUP_SHIFT;
   4677 		rv |= OPTI_MISC_INDEX(drive);
   4678 		opti_write_config(chp, OPTI_REG_MISC, mr | rv);
   4679 
   4680 		/* Set the pulse width and recovery timing parameters */
   4681 		rv  = opti_tim_cp[spd][m] << OPTI_PULSE_WIDTH_SHIFT;
   4682 		rv |= opti_tim_rt[spd][m] << OPTI_RECOVERY_TIME_SHIFT;
   4683 		opti_write_config(chp, OPTI_REG_READ_CYCLE_TIMING, rv);
   4684 		opti_write_config(chp, OPTI_REG_WRITE_CYCLE_TIMING, rv);
   4685 
   4686 		/* Set the Enhanced Mode register appropriately */
   4687 	    	rv = pciide_pci_read(sc->sc_pc, sc->sc_tag, OPTI_REG_ENH_MODE);
   4688 		rv &= ~OPTI_ENH_MODE_MASK(chp->channel, drive);
   4689 		rv |= OPTI_ENH_MODE(chp->channel, drive, opti_tim_em[m]);
   4690 		pciide_pci_write(sc->sc_pc, sc->sc_tag, OPTI_REG_ENH_MODE, rv);
   4691 	}
   4692 
   4693 	/* Finally, enable the timings */
   4694 	opti_write_config(chp, OPTI_REG_CONTROL, OPTI_CONTROL_ENABLE);
   4695 
   4696 	pciide_print_modes(cp);
   4697 }
   4698 
   4699 #define	ACARD_IS_850(sc)						\
   4700 	((sc)->sc_pp->ide_product == PCI_PRODUCT_ACARD_ATP850U)
   4701 
   4702 void
   4703 acard_chip_map(sc, pa)
   4704 	struct pciide_softc *sc;
   4705 	struct pci_attach_args *pa;
   4706 {
   4707 	struct pciide_channel *cp;
   4708 	int i;
   4709 	pcireg_t interface;
   4710 	bus_size_t cmdsize, ctlsize;
   4711 
   4712 	if (pciide_chipen(sc, pa) == 0)
   4713 		return;
   4714 
   4715 	/*
   4716 	 * when the chip is in native mode it identifies itself as a
   4717 	 * 'misc mass storage'. Fake interface in this case.
   4718 	 */
   4719 	if (PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_MASS_STORAGE_IDE) {
   4720 		interface = PCI_INTERFACE(pa->pa_class);
   4721 	} else {
   4722 		interface = PCIIDE_INTERFACE_BUS_MASTER_DMA |
   4723 		    PCIIDE_INTERFACE_PCI(0) | PCIIDE_INTERFACE_PCI(1);
   4724 	}
   4725 
   4726 	printf("%s: bus-master DMA support present",
   4727 	    sc->sc_wdcdev.sc_dev.dv_xname);
   4728 	pciide_mapreg_dma(sc, pa);
   4729 	printf("\n");
   4730 	sc->sc_wdcdev.cap = WDC_CAPABILITY_DATA16 | WDC_CAPABILITY_DATA32 |
   4731 	    WDC_CAPABILITY_MODE;
   4732 
   4733 	if (sc->sc_dma_ok) {
   4734 		sc->sc_wdcdev.cap |= WDC_CAPABILITY_DMA | WDC_CAPABILITY_UDMA;
   4735 		sc->sc_wdcdev.cap |= WDC_CAPABILITY_IRQACK;
   4736 		sc->sc_wdcdev.irqack = pciide_irqack;
   4737 	}
   4738 	sc->sc_wdcdev.PIO_cap = 4;
   4739 	sc->sc_wdcdev.DMA_cap = 2;
   4740 	sc->sc_wdcdev.UDMA_cap = ACARD_IS_850(sc) ? 2 : 4;
   4741 
   4742 	sc->sc_wdcdev.set_modes = acard_setup_channel;
   4743 	sc->sc_wdcdev.channels = sc->wdc_chanarray;
   4744 	sc->sc_wdcdev.nchannels = 2;
   4745 
   4746 	for (i = 0; i < sc->sc_wdcdev.nchannels; i++) {
   4747 		cp = &sc->pciide_channels[i];
   4748 		if (pciide_chansetup(sc, i, interface) == 0)
   4749 			continue;
   4750 		if (interface & PCIIDE_INTERFACE_PCI(i)) {
   4751 			cp->hw_ok = pciide_mapregs_native(pa, cp, &cmdsize,
   4752 			    &ctlsize, pciide_pci_intr);
   4753 		} else {
   4754 			cp->hw_ok = pciide_mapregs_compat(pa, cp, i,
   4755 			    &cmdsize, &ctlsize);
   4756 		}
   4757 		if (cp->hw_ok == 0)
   4758 			return;
   4759 		cp->wdc_channel.data32iot = cp->wdc_channel.cmd_iot;
   4760 		cp->wdc_channel.data32ioh = cp->wdc_channel.cmd_ioh;
   4761 		wdcattach(&cp->wdc_channel);
   4762 		acard_setup_channel(&cp->wdc_channel);
   4763 	}
   4764 	if (!ACARD_IS_850(sc)) {
   4765 		u_int32_t reg;
   4766 		reg = pci_conf_read(sc->sc_pc, sc->sc_tag, ATP8x0_CTRL);
   4767 		reg &= ~ATP860_CTRL_INT;
   4768 		pci_conf_write(sc->sc_pc, sc->sc_tag, ATP8x0_CTRL, reg);
   4769 	}
   4770 }
   4771 
   4772 void
   4773 acard_setup_channel(chp)
   4774 	struct channel_softc *chp;
   4775 {
   4776 	struct ata_drive_datas *drvp;
   4777 	struct pciide_channel *cp = (struct pciide_channel*)chp;
   4778 	struct pciide_softc *sc = (struct pciide_softc *)cp->wdc_channel.wdc;
   4779 	int channel = chp->channel;
   4780 	int drive;
   4781 	u_int32_t idetime, udma_mode;
   4782 	u_int32_t idedma_ctl;
   4783 
   4784 	/* setup DMA if needed */
   4785 	pciide_channel_dma_setup(cp);
   4786 
   4787 	if (ACARD_IS_850(sc)) {
   4788 		idetime = 0;
   4789 		udma_mode = pci_conf_read(sc->sc_pc, sc->sc_tag, ATP850_UDMA);
   4790 		udma_mode &= ~ATP850_UDMA_MASK(channel);
   4791 	} else {
   4792 		idetime = pci_conf_read(sc->sc_pc, sc->sc_tag, ATP860_IDETIME);
   4793 		idetime &= ~ATP860_SETTIME_MASK(channel);
   4794 		udma_mode = pci_conf_read(sc->sc_pc, sc->sc_tag, ATP860_UDMA);
   4795 		udma_mode &= ~ATP860_UDMA_MASK(channel);
   4796 
   4797 		/* check 80 pins cable */
   4798 		if ((chp->ch_drive[0].drive_flags & DRIVE_UDMA) ||
   4799 		    (chp->ch_drive[1].drive_flags & DRIVE_UDMA)) {
   4800 			if (pci_conf_read(sc->sc_pc, sc->sc_tag, ATP8x0_CTRL)
   4801 			    & ATP860_CTRL_80P(chp->channel)) {
   4802 				if (chp->ch_drive[0].UDMA_mode > 2)
   4803 					chp->ch_drive[0].UDMA_mode = 2;
   4804 				if (chp->ch_drive[1].UDMA_mode > 2)
   4805 					chp->ch_drive[1].UDMA_mode = 2;
   4806 			}
   4807 		}
   4808 	}
   4809 
   4810 	idedma_ctl = 0;
   4811 
   4812 	/* Per drive settings */
   4813 	for (drive = 0; drive < 2; drive++) {
   4814 		drvp = &chp->ch_drive[drive];
   4815 		/* If no drive, skip */
   4816 		if ((drvp->drive_flags & DRIVE) == 0)
   4817 			continue;
   4818 		/* add timing values, setup DMA if needed */
   4819 		if ((chp->wdc->cap & WDC_CAPABILITY_UDMA) &&
   4820 		    (drvp->drive_flags & DRIVE_UDMA)) {
   4821 			/* use Ultra/DMA */
   4822 			if (ACARD_IS_850(sc)) {
   4823 				idetime |= ATP850_SETTIME(drive,
   4824 				    acard_act_udma[drvp->UDMA_mode],
   4825 				    acard_rec_udma[drvp->UDMA_mode]);
   4826 				udma_mode |= ATP850_UDMA_MODE(channel, drive,
   4827 				    acard_udma_conf[drvp->UDMA_mode]);
   4828 			} else {
   4829 				idetime |= ATP860_SETTIME(channel, drive,
   4830 				    acard_act_udma[drvp->UDMA_mode],
   4831 				    acard_rec_udma[drvp->UDMA_mode]);
   4832 				udma_mode |= ATP860_UDMA_MODE(channel, drive,
   4833 				    acard_udma_conf[drvp->UDMA_mode]);
   4834 			}
   4835 			idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
   4836 		} else if ((chp->wdc->cap & WDC_CAPABILITY_DMA) &&
   4837 		    (drvp->drive_flags & DRIVE_DMA)) {
   4838 			/* use Multiword DMA */
   4839 			drvp->drive_flags &= ~DRIVE_UDMA;
   4840 			if (ACARD_IS_850(sc)) {
   4841 				idetime |= ATP850_SETTIME(drive,
   4842 				    acard_act_dma[drvp->DMA_mode],
   4843 				    acard_rec_dma[drvp->DMA_mode]);
   4844 			} else {
   4845 				idetime |= ATP860_SETTIME(channel, drive,
   4846 				    acard_act_dma[drvp->DMA_mode],
   4847 				    acard_rec_dma[drvp->DMA_mode]);
   4848 			}
   4849 			idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
   4850 		} else {
   4851 			/* PIO only */
   4852 			drvp->drive_flags &= ~(DRIVE_UDMA | DRIVE_DMA);
   4853 			if (ACARD_IS_850(sc)) {
   4854 				idetime |= ATP850_SETTIME(drive,
   4855 				    acard_act_pio[drvp->PIO_mode],
   4856 				    acard_rec_pio[drvp->PIO_mode]);
   4857 			} else {
   4858 				idetime |= ATP860_SETTIME(channel, drive,
   4859 				    acard_act_pio[drvp->PIO_mode],
   4860 				    acard_rec_pio[drvp->PIO_mode]);
   4861 			}
   4862 		pci_conf_write(sc->sc_pc, sc->sc_tag, ATP8x0_CTRL,
   4863 		    pci_conf_read(sc->sc_pc, sc->sc_tag, ATP8x0_CTRL)
   4864 		    | ATP8x0_CTRL_EN(channel));
   4865 		}
   4866 	}
   4867 
   4868 	if (idedma_ctl != 0) {
   4869 		/* Add software bits in status register */
   4870 		bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   4871 		    IDEDMA_CTL + IDEDMA_SCH_OFFSET * channel, idedma_ctl);
   4872 	}
   4873 	pciide_print_modes(cp);
   4874 
   4875 	if (ACARD_IS_850(sc)) {
   4876 		pci_conf_write(sc->sc_pc, sc->sc_tag,
   4877 		    ATP850_IDETIME(channel), idetime);
   4878 		pci_conf_write(sc->sc_pc, sc->sc_tag, ATP850_UDMA, udma_mode);
   4879 	} else {
   4880 		pci_conf_write(sc->sc_pc, sc->sc_tag, ATP860_IDETIME, idetime);
   4881 		pci_conf_write(sc->sc_pc, sc->sc_tag, ATP860_UDMA, udma_mode);
   4882 	}
   4883 }
   4884 
   4885 int
   4886 acard_pci_intr(arg)
   4887 	void *arg;
   4888 {
   4889 	struct pciide_softc *sc = arg;
   4890 	struct pciide_channel *cp;
   4891 	struct channel_softc *wdc_cp;
   4892 	int rv = 0;
   4893 	int dmastat, i, crv;
   4894 
   4895 	for (i = 0; i < sc->sc_wdcdev.nchannels; i++) {
   4896 		dmastat = bus_space_read_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   4897 		    IDEDMA_CTL + IDEDMA_SCH_OFFSET * i);
   4898 		if ((dmastat & IDEDMA_CTL_INTR) == 0)
   4899 			continue;
   4900 		cp = &sc->pciide_channels[i];
   4901 		wdc_cp = &cp->wdc_channel;
   4902 		if ((wdc_cp->ch_flags & WDCF_IRQ_WAIT) == 0) {
   4903 			(void)wdcintr(wdc_cp);
   4904 			bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   4905 			    IDEDMA_CTL + IDEDMA_SCH_OFFSET * i, dmastat);
   4906 			continue;
   4907 		}
   4908 		crv = wdcintr(wdc_cp);
   4909 		if (crv == 0)
   4910 			printf("%s:%d: bogus intr\n",
   4911 			    sc->sc_wdcdev.sc_dev.dv_xname, i);
   4912 		else if (crv == 1)
   4913 			rv = 1;
   4914 		else if (rv == 0)
   4915 			rv = crv;
   4916 	}
   4917 	return rv;
   4918 }
   4919 
   4920 static int
   4921 sl82c105_bugchk(struct pci_attach_args *pa)
   4922 {
   4923 
   4924 	if (PCI_VENDOR(pa->pa_id) != PCI_VENDOR_WINBOND ||
   4925 	    PCI_PRODUCT(pa->pa_id) != PCI_PRODUCT_WINBOND_W83C553F_0)
   4926 		return (0);
   4927 
   4928 	if (PCI_REVISION(pa->pa_class) <= 0x05)
   4929 		return (1);
   4930 
   4931 	return (0);
   4932 }
   4933 
   4934 void
   4935 sl82c105_chip_map(sc, pa)
   4936 	struct pciide_softc *sc;
   4937 	struct pci_attach_args *pa;
   4938 {
   4939 	struct pciide_channel *cp;
   4940 	bus_size_t cmdsize, ctlsize;
   4941 	pcireg_t interface, idecr;
   4942 	int channel;
   4943 
   4944 	if (pciide_chipen(sc, pa) == 0)
   4945 		return;
   4946 
   4947 	printf("%s: bus-master DMA support present",
   4948 	    sc->sc_wdcdev.sc_dev.dv_xname);
   4949 
   4950 	/*
   4951 	 * Check to see if we're part of the Winbond 83c553 Southbridge.
   4952 	 * If so, we need to disable DMA on rev. <= 5 of that chip.
   4953 	 */
   4954 	if (pci_find_device(pa, sl82c105_bugchk)) {
   4955 		printf(" but disabled due to 83c553 rev. <= 0x05");
   4956 		sc->sc_dma_ok = 0;
   4957 	} else
   4958 		pciide_mapreg_dma(sc, pa);
   4959 	printf("\n");
   4960 
   4961 	sc->sc_wdcdev.cap = WDC_CAPABILITY_DATA32 | WDC_CAPABILITY_DATA16 |
   4962 	    WDC_CAPABILITY_MODE;
   4963 	sc->sc_wdcdev.PIO_cap = 4;
   4964 	if (sc->sc_dma_ok) {
   4965 		sc->sc_wdcdev.cap |= WDC_CAPABILITY_DMA | WDC_CAPABILITY_IRQACK;
   4966 		sc->sc_wdcdev.irqack = pciide_irqack;
   4967 		sc->sc_wdcdev.DMA_cap = 2;
   4968 	}
   4969 	sc->sc_wdcdev.set_modes = sl82c105_setup_channel;
   4970 
   4971 	sc->sc_wdcdev.channels = sc->wdc_chanarray;
   4972 	sc->sc_wdcdev.nchannels = PCIIDE_NUM_CHANNELS;
   4973 
   4974 	idecr = pci_conf_read(sc->sc_pc, sc->sc_tag, SYMPH_IDECSR);
   4975 
   4976 	interface = PCI_INTERFACE(pa->pa_class);
   4977 
   4978 	for (channel = 0; channel < sc->sc_wdcdev.nchannels; channel++) {
   4979 		cp = &sc->pciide_channels[channel];
   4980 		if (pciide_chansetup(sc, channel, interface) == 0)
   4981 			continue;
   4982 		if ((channel == 0 && (idecr & IDECR_P0EN) == 0) ||
   4983 		    (channel == 1 && (idecr & IDECR_P1EN) == 0)) {
   4984 			printf("%s: %s channel ignored (disabled)\n",
   4985 			    sc->sc_wdcdev.sc_dev.dv_xname, cp->name);
   4986 			continue;
   4987 		}
   4988 		pciide_mapchan(pa, cp, interface, &cmdsize, &ctlsize,
   4989 		    pciide_pci_intr);
   4990 		if (cp->hw_ok == 0)
   4991 			continue;
   4992 		pciide_map_compat_intr(pa, cp, channel, interface);
   4993 		if (cp->hw_ok == 0)
   4994 			continue;
   4995 		sl82c105_setup_channel(&cp->wdc_channel);
   4996 	}
   4997 }
   4998 
   4999 void
   5000 sl82c105_setup_channel(chp)
   5001 	struct channel_softc *chp;
   5002 {
   5003 	struct ata_drive_datas *drvp;
   5004 	struct pciide_channel *cp = (struct pciide_channel*)chp;
   5005 	struct pciide_softc *sc = (struct pciide_softc *)cp->wdc_channel.wdc;
   5006 	int pxdx_reg, drive;
   5007 	pcireg_t pxdx;
   5008 
   5009 	/* Set up DMA if needed. */
   5010 	pciide_channel_dma_setup(cp);
   5011 
   5012 	for (drive = 0; drive < 2; drive++) {
   5013 		pxdx_reg = ((chp->channel == 0) ? SYMPH_P0D0CR
   5014 						: SYMPH_P1D0CR) + (drive * 4);
   5015 
   5016 		pxdx = pci_conf_read(sc->sc_pc, sc->sc_tag, pxdx_reg);
   5017 
   5018 		pxdx &= ~(PxDx_CMD_ON_MASK|PxDx_CMD_OFF_MASK);
   5019 		pxdx &= ~(PxDx_PWEN|PxDx_RDYEN|PxDx_RAEN);
   5020 
   5021 		drvp = &chp->ch_drive[drive];
   5022 		/* If no drive, skip. */
   5023 		if ((drvp->drive_flags & DRIVE) == 0) {
   5024 			pci_conf_write(sc->sc_pc, sc->sc_tag, pxdx_reg, pxdx);
   5025 			continue;
   5026 		}
   5027 
   5028 		if (drvp->drive_flags & DRIVE_DMA) {
   5029 			/*
   5030 			 * Timings will be used for both PIO and DMA,
   5031 			 * so adjust DMA mode if needed.
   5032 			 */
   5033 			if (drvp->PIO_mode >= 3) {
   5034 				if ((drvp->DMA_mode + 2) > drvp->PIO_mode)
   5035 					drvp->DMA_mode = drvp->PIO_mode - 2;
   5036 				if (drvp->DMA_mode < 1) {
   5037 					/*
   5038 					 * Can't mix both PIO and DMA.
   5039 					 * Disable DMA.
   5040 					 */
   5041 					drvp->drive_flags &= ~DRIVE_DMA;
   5042 				}
   5043 			} else {
   5044 				/*
   5045 				 * Can't mix both PIO and DMA.  Disable
   5046 				 * DMA.
   5047 				 */
   5048 				drvp->drive_flags &= ~DRIVE_DMA;
   5049 			}
   5050 		}
   5051 
   5052 		if (drvp->drive_flags & DRIVE_DMA) {
   5053 			/* Use multi-word DMA. */
   5054 			pxdx |= symph_mw_dma_times[drvp->DMA_mode].cmd_on <<
   5055 			    PxDx_CMD_ON_SHIFT;
   5056 			pxdx |= symph_mw_dma_times[drvp->DMA_mode].cmd_off;
   5057 		} else {
   5058 			pxdx |= symph_pio_times[drvp->PIO_mode].cmd_on <<
   5059 			    PxDx_CMD_ON_SHIFT;
   5060 			pxdx |= symph_pio_times[drvp->PIO_mode].cmd_off;
   5061 		}
   5062 
   5063 		/* XXX PxDx_PWEN? PxDx_RDYEN? PxDx_RAEN? */
   5064 
   5065 		/* ...and set the mode for this drive. */
   5066 		pci_conf_write(sc->sc_pc, sc->sc_tag, pxdx_reg, pxdx);
   5067 	}
   5068 
   5069 	pciide_print_modes(cp);
   5070 }
   5071 
   5072 void
   5073 serverworks_chip_map(sc, pa)
   5074 	struct pciide_softc *sc;
   5075 	struct pci_attach_args *pa;
   5076 {
   5077 	struct pciide_channel *cp;
   5078 	pcireg_t interface = PCI_INTERFACE(pa->pa_class);
   5079 	pcitag_t pcib_tag;
   5080 	int channel;
   5081 	bus_size_t cmdsize, ctlsize;
   5082 
   5083 	if (pciide_chipen(sc, pa) == 0)
   5084 		return;
   5085 
   5086 	printf("%s: bus-master DMA support present",
   5087 	    sc->sc_wdcdev.sc_dev.dv_xname);
   5088 	pciide_mapreg_dma(sc, pa);
   5089 	printf("\n");
   5090 	sc->sc_wdcdev.cap = WDC_CAPABILITY_DATA16 | WDC_CAPABILITY_DATA32 |
   5091 	    WDC_CAPABILITY_MODE;
   5092 
   5093 	if (sc->sc_dma_ok) {
   5094 		sc->sc_wdcdev.cap |= WDC_CAPABILITY_DMA | WDC_CAPABILITY_UDMA;
   5095 		sc->sc_wdcdev.cap |= WDC_CAPABILITY_IRQACK;
   5096 		sc->sc_wdcdev.irqack = pciide_irqack;
   5097 	}
   5098 	sc->sc_wdcdev.PIO_cap = 4;
   5099 	sc->sc_wdcdev.DMA_cap = 2;
   5100 	switch (sc->sc_pp->ide_product) {
   5101 	case PCI_PRODUCT_SERVERWORKS_OSB4_IDE:
   5102 		sc->sc_wdcdev.UDMA_cap = 2;
   5103 		break;
   5104 	case PCI_PRODUCT_SERVERWORKS_CSB5_IDE:
   5105 		if (PCI_REVISION(pa->pa_class) < 0x92)
   5106 			sc->sc_wdcdev.UDMA_cap = 4;
   5107 		else
   5108 			sc->sc_wdcdev.UDMA_cap = 5;
   5109 		break;
   5110 	case PCI_PRODUCT_SERVERWORKS_CSB6_IDE:
   5111 		sc->sc_wdcdev.UDMA_cap = 5;
   5112 		break;
   5113 	}
   5114 
   5115 	sc->sc_wdcdev.set_modes = serverworks_setup_channel;
   5116 	sc->sc_wdcdev.channels = sc->wdc_chanarray;
   5117 	sc->sc_wdcdev.nchannels = 2;
   5118 
   5119 	for (channel = 0; channel < sc->sc_wdcdev.nchannels; channel++) {
   5120 		cp = &sc->pciide_channels[channel];
   5121 		if (pciide_chansetup(sc, channel, interface) == 0)
   5122 			continue;
   5123 		pciide_mapchan(pa, cp, interface, &cmdsize, &ctlsize,
   5124 		    serverworks_pci_intr);
   5125 		if (cp->hw_ok == 0)
   5126 			return;
   5127 		pciide_map_compat_intr(pa, cp, channel, interface);
   5128 		if (cp->hw_ok == 0)
   5129 			return;
   5130 		serverworks_setup_channel(&cp->wdc_channel);
   5131 	}
   5132 
   5133 	pcib_tag = pci_make_tag(pa->pa_pc, pa->pa_bus, pa->pa_device, 0);
   5134 	pci_conf_write(pa->pa_pc, pcib_tag, 0x64,
   5135 	    (pci_conf_read(pa->pa_pc, pcib_tag, 0x64) & ~0x2000) | 0x4000);
   5136 }
   5137 
   5138 void
   5139 serverworks_setup_channel(chp)
   5140 	struct channel_softc *chp;
   5141 {
   5142 	struct ata_drive_datas *drvp;
   5143 	struct pciide_channel *cp = (struct pciide_channel*)chp;
   5144 	struct pciide_softc *sc = (struct pciide_softc *)cp->wdc_channel.wdc;
   5145 	int channel = chp->channel;
   5146 	int drive, unit;
   5147 	u_int32_t pio_time, dma_time, pio_mode, udma_mode;
   5148 	u_int32_t idedma_ctl;
   5149 	static const u_int8_t pio_modes[5] = {0x5d, 0x47, 0x34, 0x22, 0x20};
   5150 	static const u_int8_t dma_modes[3] = {0x77, 0x21, 0x20};
   5151 
   5152 	/* setup DMA if needed */
   5153 	pciide_channel_dma_setup(cp);
   5154 
   5155 	pio_time = pci_conf_read(sc->sc_pc, sc->sc_tag, 0x40);
   5156 	dma_time = pci_conf_read(sc->sc_pc, sc->sc_tag, 0x44);
   5157 	pio_mode = pci_conf_read(sc->sc_pc, sc->sc_tag, 0x48);
   5158 	udma_mode = pci_conf_read(sc->sc_pc, sc->sc_tag, 0x54);
   5159 
   5160 	pio_time &= ~(0xffff << (16 * channel));
   5161 	dma_time &= ~(0xffff << (16 * channel));
   5162 	pio_mode &= ~(0xff << (8 * channel + 16));
   5163 	udma_mode &= ~(0xff << (8 * channel + 16));
   5164 	udma_mode &= ~(3 << (2 * channel));
   5165 
   5166 	idedma_ctl = 0;
   5167 
   5168 	/* Per drive settings */
   5169 	for (drive = 0; drive < 2; drive++) {
   5170 		drvp = &chp->ch_drive[drive];
   5171 		/* If no drive, skip */
   5172 		if ((drvp->drive_flags & DRIVE) == 0)
   5173 			continue;
   5174 		unit = drive + 2 * channel;
   5175 		/* add timing values, setup DMA if needed */
   5176 		pio_time |= pio_modes[drvp->PIO_mode] << (8 * (unit^1));
   5177 		pio_mode |= drvp->PIO_mode << (4 * unit + 16);
   5178 		if ((chp->wdc->cap & WDC_CAPABILITY_UDMA) &&
   5179 		    (drvp->drive_flags & DRIVE_UDMA)) {
   5180 			/* use Ultra/DMA, check for 80-pin cable */
   5181 			if (drvp->UDMA_mode > 2 &&
   5182 			    (PCI_PRODUCT(pci_conf_read(sc->sc_pc, sc->sc_tag, PCI_SUBSYS_ID_REG)) & (1 << (14 + channel))) == 0)
   5183 				drvp->UDMA_mode = 2;
   5184 			dma_time |= dma_modes[drvp->DMA_mode] << (8 * (unit^1));
   5185 			udma_mode |= drvp->UDMA_mode << (4 * unit + 16);
   5186 			udma_mode |= 1 << unit;
   5187 			idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
   5188 		} else if ((chp->wdc->cap & WDC_CAPABILITY_DMA) &&
   5189 		    (drvp->drive_flags & DRIVE_DMA)) {
   5190 			/* use Multiword DMA */
   5191 			drvp->drive_flags &= ~DRIVE_UDMA;
   5192 			dma_time |= dma_modes[drvp->DMA_mode] << (8 * (unit^1));
   5193 			idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
   5194 		} else {
   5195 			/* PIO only */
   5196 			drvp->drive_flags &= ~(DRIVE_UDMA | DRIVE_DMA);
   5197 		}
   5198 	}
   5199 
   5200 	pci_conf_write(sc->sc_pc, sc->sc_tag, 0x40, pio_time);
   5201 	pci_conf_write(sc->sc_pc, sc->sc_tag, 0x44, dma_time);
   5202 	if (sc->sc_pp->ide_product != PCI_PRODUCT_SERVERWORKS_OSB4_IDE)
   5203 		pci_conf_write(sc->sc_pc, sc->sc_tag, 0x48, pio_mode);
   5204 	pci_conf_write(sc->sc_pc, sc->sc_tag, 0x54, udma_mode);
   5205 
   5206 	if (idedma_ctl != 0) {
   5207 		/* Add software bits in status register */
   5208 		bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   5209 		    IDEDMA_CTL + IDEDMA_SCH_OFFSET * channel, idedma_ctl);
   5210 	}
   5211 	pciide_print_modes(cp);
   5212 }
   5213 
   5214 int
   5215 serverworks_pci_intr(arg)
   5216 	void *arg;
   5217 {
   5218 	struct pciide_softc *sc = arg;
   5219 	struct pciide_channel *cp;
   5220 	struct channel_softc *wdc_cp;
   5221 	int rv = 0;
   5222 	int dmastat, i, crv;
   5223 
   5224 	for (i = 0; i < sc->sc_wdcdev.nchannels; i++) {
   5225 		dmastat = bus_space_read_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   5226 		    IDEDMA_CTL + IDEDMA_SCH_OFFSET * i);
   5227 		if ((dmastat & (IDEDMA_CTL_ACT | IDEDMA_CTL_INTR)) !=
   5228 		    IDEDMA_CTL_INTR)
   5229 			continue;
   5230 		cp = &sc->pciide_channels[i];
   5231 		wdc_cp = &cp->wdc_channel;
   5232 		crv = wdcintr(wdc_cp);
   5233 		if (crv == 0) {
   5234 			printf("%s:%d: bogus intr\n",
   5235 			    sc->sc_wdcdev.sc_dev.dv_xname, i);
   5236 			bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   5237 			    IDEDMA_CTL + IDEDMA_SCH_OFFSET * i, dmastat);
   5238 		} else
   5239 			rv = 1;
   5240 	}
   5241 	return rv;
   5242 }
   5243 
   5244 void
   5245 artisea_chip_map(sc, pa)
   5246 	struct pciide_softc *sc;
   5247 	struct pci_attach_args *pa;
   5248 {
   5249 	struct pciide_channel *cp;
   5250 	bus_size_t cmdsize, ctlsize;
   5251 	pcireg_t interface;
   5252 	int channel;
   5253 
   5254 	if (pciide_chipen(sc, pa) == 0)
   5255 		return;
   5256 
   5257 	printf("%s: bus-master DMA support resent",
   5258 	    sc->sc_wdcdev.sc_dev.dv_xname);
   5259 #ifndef PCIIDE_I31244_ENABLEDMA
   5260 	if (PCI_REVISION(pa->pa_class) == 0) {
   5261 		printf(" but disabled due to rev. 0");
   5262 		sc->sc_dma_ok = 0;
   5263 	} else
   5264 #endif
   5265 		pciide_mapreg_dma(sc, pa);
   5266 	printf("\n");
   5267 
   5268 	/*
   5269 	 * XXX Configure LEDs to show activity.
   5270 	 */
   5271 
   5272 	sc->sc_wdcdev.cap |= WDC_CAPABILITY_DATA16 | WDC_CAPABILITY_DATA32 |
   5273 	    WDC_CAPABILITY_MODE;
   5274 	sc->sc_wdcdev.PIO_cap = 4;
   5275 	if (sc->sc_dma_ok) {
   5276 		sc->sc_wdcdev.cap |= WDC_CAPABILITY_DMA | WDC_CAPABILITY_UDMA;
   5277 		sc->sc_wdcdev.cap |= WDC_CAPABILITY_IRQACK;
   5278 		sc->sc_wdcdev.irqack = pciide_irqack;
   5279 		sc->sc_wdcdev.DMA_cap = 2;
   5280 		sc->sc_wdcdev.UDMA_cap = 6;
   5281 	}
   5282 	sc->sc_wdcdev.set_modes = sata_setup_channel;
   5283 
   5284 	sc->sc_wdcdev.channels = sc->wdc_chanarray;
   5285 	sc->sc_wdcdev.nchannels = PCIIDE_NUM_CHANNELS;
   5286 
   5287 	interface = PCI_INTERFACE(pa->pa_class);
   5288 
   5289 	for (channel = 0; channel < sc->sc_wdcdev.nchannels; channel++) {
   5290 		cp = &sc->pciide_channels[channel];
   5291 		if (pciide_chansetup(sc, channel, interface) == 0)
   5292 			continue;
   5293 		pciide_mapchan(pa, cp, interface, &cmdsize, &ctlsize,
   5294 		    pciide_pci_intr);
   5295 		if (cp->hw_ok == 0)
   5296 			continue;
   5297 		pciide_map_compat_intr(pa, cp, channel, interface);
   5298 		sata_setup_channel(&cp->wdc_channel);
   5299 	}
   5300 }
   5301