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pciide.c revision 1.206
      1 /*	$NetBSD: pciide.c,v 1.206 2003/09/25 19:29:49 mycroft 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 1.206 2003/09/25 19:29:49 mycroft 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/pciide_sii3112_reg.h>
    124 #include <dev/pci/cy82c693var.h>
    125 
    126 #include "opt_pciide.h"
    127 
    128 static const char dmaerrfmt[] =
    129     "%s:%d: unable to %s table DMA map for drive %d, error=%d\n";
    130 
    131 /* inlines for reading/writing 8-bit PCI registers */
    132 static __inline u_int8_t pciide_pci_read __P((pci_chipset_tag_t, pcitag_t,
    133 					      int));
    134 static __inline void pciide_pci_write __P((pci_chipset_tag_t, pcitag_t,
    135 					   int, u_int8_t));
    136 
    137 static __inline u_int8_t
    138 pciide_pci_read(pc, pa, reg)
    139 	pci_chipset_tag_t pc;
    140 	pcitag_t pa;
    141 	int reg;
    142 {
    143 
    144 	return (pci_conf_read(pc, pa, (reg & ~0x03)) >>
    145 	    ((reg & 0x03) * 8) & 0xff);
    146 }
    147 
    148 static __inline void
    149 pciide_pci_write(pc, pa, reg, val)
    150 	pci_chipset_tag_t pc;
    151 	pcitag_t pa;
    152 	int reg;
    153 	u_int8_t val;
    154 {
    155 	pcireg_t pcival;
    156 
    157 	pcival = pci_conf_read(pc, pa, (reg & ~0x03));
    158 	pcival &= ~(0xff << ((reg & 0x03) * 8));
    159 	pcival |= (val << ((reg & 0x03) * 8));
    160 	pci_conf_write(pc, pa, (reg & ~0x03), pcival);
    161 }
    162 
    163 void default_chip_map __P((struct pciide_softc*, struct pci_attach_args*));
    164 
    165 void sata_setup_channel __P((struct channel_softc*));
    166 
    167 void piix_chip_map __P((struct pciide_softc*, struct pci_attach_args*));
    168 void piix_setup_channel __P((struct channel_softc*));
    169 void piix3_4_setup_channel __P((struct channel_softc*));
    170 static u_int32_t piix_setup_idetim_timings __P((u_int8_t, u_int8_t, u_int8_t));
    171 static u_int32_t piix_setup_idetim_drvs __P((struct ata_drive_datas*));
    172 static u_int32_t piix_setup_sidetim_timings __P((u_int8_t, u_int8_t, u_int8_t));
    173 
    174 void amd7x6_chip_map __P((struct pciide_softc*, struct pci_attach_args*));
    175 void amd7x6_setup_channel __P((struct channel_softc*));
    176 
    177 void apollo_chip_map __P((struct pciide_softc*, struct pci_attach_args*));
    178 void apollo_sata_chip_map __P((struct pciide_softc*, struct pci_attach_args*));
    179 void apollo_setup_channel __P((struct channel_softc*));
    180 
    181 void cmd_chip_map __P((struct pciide_softc*, struct pci_attach_args*));
    182 void cmd0643_9_chip_map __P((struct pciide_softc*, struct pci_attach_args*));
    183 void cmd0643_9_setup_channel __P((struct channel_softc*));
    184 void cmd_channel_map __P((struct pci_attach_args *,
    185 			struct pciide_softc *, int));
    186 int  cmd_pci_intr __P((void *));
    187 void cmd646_9_irqack __P((struct channel_softc *));
    188 void cmd680_chip_map __P((struct pciide_softc*, struct pci_attach_args*));
    189 void cmd680_setup_channel __P((struct channel_softc*));
    190 void cmd680_channel_map __P((struct pci_attach_args *,
    191 			struct pciide_softc *, int));
    192 
    193 void cmd3112_chip_map __P((struct pciide_softc*, struct pci_attach_args*));
    194 void cmd3112_setup_channel __P((struct channel_softc*));
    195 
    196 void cy693_chip_map __P((struct pciide_softc*, struct pci_attach_args*));
    197 void cy693_setup_channel __P((struct channel_softc*));
    198 
    199 void sis_chip_map __P((struct pciide_softc*, struct pci_attach_args*));
    200 void sis_setup_channel __P((struct channel_softc*));
    201 void sis96x_setup_channel __P((struct channel_softc*));
    202 static int sis_hostbr_match __P(( struct pci_attach_args *));
    203 static int sis_south_match __P(( struct pci_attach_args *));
    204 
    205 void acer_chip_map __P((struct pciide_softc*, struct pci_attach_args*));
    206 void acer_setup_channel __P((struct channel_softc*));
    207 int  acer_pci_intr __P((void *));
    208 
    209 void pdc202xx_chip_map __P((struct pciide_softc*, struct pci_attach_args*));
    210 void pdc202xx_setup_channel __P((struct channel_softc*));
    211 void pdc20268_setup_channel __P((struct channel_softc*));
    212 int  pdc202xx_pci_intr __P((void *));
    213 int  pdc20265_pci_intr __P((void *));
    214 static void pdc20262_dma_start __P((void*, int, int));
    215 static int  pdc20262_dma_finish __P((void*, int, int, int));
    216 
    217 void opti_chip_map __P((struct pciide_softc*, struct pci_attach_args*));
    218 void opti_setup_channel __P((struct channel_softc*));
    219 
    220 void hpt_chip_map __P((struct pciide_softc*, struct pci_attach_args*));
    221 void hpt_setup_channel __P((struct channel_softc*));
    222 int  hpt_pci_intr __P((void *));
    223 
    224 void acard_chip_map __P((struct pciide_softc*, struct pci_attach_args*));
    225 void acard_setup_channel __P((struct channel_softc*));
    226 int  acard_pci_intr __P((void *));
    227 
    228 void serverworks_chip_map __P((struct pciide_softc*, struct pci_attach_args*));
    229 void serverworks_setup_channel __P((struct channel_softc*));
    230 int  serverworks_pci_intr __P((void *));
    231 
    232 void sl82c105_chip_map __P((struct pciide_softc*, struct pci_attach_args*));
    233 void sl82c105_setup_channel __P((struct channel_softc*));
    234 
    235 void pciide_channel_dma_setup __P((struct pciide_channel *));
    236 int  pciide_dma_table_setup __P((struct pciide_softc*, int, int));
    237 int  pciide_dma_init __P((void*, int, int, void *, size_t, int));
    238 void pciide_dma_start __P((void*, int, int));
    239 int  pciide_dma_finish __P((void*, int, int, int));
    240 void pciide_irqack __P((struct channel_softc *));
    241 
    242 void artisea_chip_map __P((struct pciide_softc*, struct pci_attach_args *));
    243 
    244 struct pciide_product_desc {
    245 	u_int32_t ide_product;
    246 	int ide_flags;
    247 	const char *ide_name;
    248 	/* map and setup chip, probe drives */
    249 	void (*chip_map) __P((struct pciide_softc*, struct pci_attach_args*));
    250 };
    251 
    252 /* Flags for ide_flags */
    253 #define IDE_PCI_CLASS_OVERRIDE	0x0001 /* accept even if class != pciide */
    254 #define	IDE_16BIT_IOSPACE	0x0002 /* I/O space BARS ignore upper word */
    255 
    256 /* Default product description for devices not known from this controller */
    257 const struct pciide_product_desc default_product_desc = {
    258 	0,
    259 	0,
    260 	"Generic PCI IDE controller",
    261 	default_chip_map,
    262 };
    263 
    264 const struct pciide_product_desc pciide_intel_products[] =  {
    265 	{ PCI_PRODUCT_INTEL_82092AA,
    266 	  0,
    267 	  "Intel 82092AA IDE controller",
    268 	  default_chip_map,
    269 	},
    270 	{ PCI_PRODUCT_INTEL_82371FB_IDE,
    271 	  0,
    272 	  "Intel 82371FB IDE controller (PIIX)",
    273 	  piix_chip_map,
    274 	},
    275 	{ PCI_PRODUCT_INTEL_82371SB_IDE,
    276 	  0,
    277 	  "Intel 82371SB IDE Interface (PIIX3)",
    278 	  piix_chip_map,
    279 	},
    280 	{ PCI_PRODUCT_INTEL_82371AB_IDE,
    281 	  0,
    282 	  "Intel 82371AB IDE controller (PIIX4)",
    283 	  piix_chip_map,
    284 	},
    285 	{ PCI_PRODUCT_INTEL_82440MX_IDE,
    286 	  0,
    287 	  "Intel 82440MX IDE controller",
    288 	  piix_chip_map
    289 	},
    290 	{ PCI_PRODUCT_INTEL_82801AA_IDE,
    291 	  0,
    292 	  "Intel 82801AA IDE Controller (ICH)",
    293 	  piix_chip_map,
    294 	},
    295 	{ PCI_PRODUCT_INTEL_82801AB_IDE,
    296 	  0,
    297 	  "Intel 82801AB IDE Controller (ICH0)",
    298 	  piix_chip_map,
    299 	},
    300 	{ PCI_PRODUCT_INTEL_82801BA_IDE,
    301 	  0,
    302 	  "Intel 82801BA IDE Controller (ICH2)",
    303 	  piix_chip_map,
    304 	},
    305 	{ PCI_PRODUCT_INTEL_82801BAM_IDE,
    306 	  0,
    307 	  "Intel 82801BAM IDE Controller (ICH2-M)",
    308 	  piix_chip_map,
    309 	},
    310 	{ PCI_PRODUCT_INTEL_82801CA_IDE_1,
    311 	  0,
    312 	  "Intel 82801CA IDE Controller (ICH3)",
    313 	  piix_chip_map,
    314 	},
    315 	{ PCI_PRODUCT_INTEL_82801CA_IDE_2,
    316 	  0,
    317 	  "Intel 82801CA IDE Controller (ICH3)",
    318 	  piix_chip_map,
    319 	},
    320 	{ PCI_PRODUCT_INTEL_82801DB_IDE,
    321 	  0,
    322 	  "Intel 82801DB IDE Controller (ICH4)",
    323 	  piix_chip_map,
    324 	},
    325 	{ PCI_PRODUCT_INTEL_82801DBM_IDE,
    326 	  0,
    327 	  "Intel 82801DBM IDE Controller (ICH4-M)",
    328 	  piix_chip_map,
    329 	},
    330 	{ PCI_PRODUCT_INTEL_82801EB_IDE,
    331 	  0,
    332 	  "Intel 82801EB IDE Controller (ICH5)",
    333 	  piix_chip_map,
    334 	},
    335 	{ PCI_PRODUCT_INTEL_31244,
    336 	  0,
    337 	  "Intel 31244 Serial ATA Controller",
    338 	  artisea_chip_map,
    339 	},
    340 	{ PCI_PRODUCT_INTEL_82801EB_SATA,
    341 	  0,
    342 	  "Intel 82801EB Serial ATA Controller",
    343 	  artisea_chip_map,
    344 	},
    345 	{ 0,
    346 	  0,
    347 	  NULL,
    348 	  NULL
    349 	}
    350 };
    351 
    352 const struct pciide_product_desc pciide_amd_products[] =  {
    353 	{ PCI_PRODUCT_AMD_PBC756_IDE,
    354 	  0,
    355 	  "Advanced Micro Devices AMD756 IDE Controller",
    356 	  amd7x6_chip_map
    357 	},
    358 	{ PCI_PRODUCT_AMD_PBC766_IDE,
    359 	  0,
    360 	  "Advanced Micro Devices AMD766 IDE Controller",
    361 	  amd7x6_chip_map
    362 	},
    363 	{ PCI_PRODUCT_AMD_PBC768_IDE,
    364 	  0,
    365 	  "Advanced Micro Devices AMD768 IDE Controller",
    366 	  amd7x6_chip_map
    367 	},
    368 	{ PCI_PRODUCT_AMD_PBC8111_IDE,
    369 	  0,
    370 	  "Advanced Micro Devices AMD8111 IDE Controller",
    371 	  amd7x6_chip_map
    372 	},
    373 	{ 0,
    374 	  0,
    375 	  NULL,
    376 	  NULL
    377 	}
    378 };
    379 
    380 const struct pciide_product_desc pciide_nvidia_products[] = {
    381 	{ PCI_PRODUCT_NVIDIA_NFORCE_ATA100,
    382 	  0,
    383 	  "NVIDIA nForce IDE Controller",
    384 	  amd7x6_chip_map
    385 	},
    386 	{ PCI_PRODUCT_NVIDIA_NFORCE2_ATA133,
    387 	  0,
    388 	  "NVIDIA nForce2 IDE Controller",
    389 	  amd7x6_chip_map
    390 	},
    391 	{ 0,
    392 	  0,
    393 	  NULL,
    394 	  NULL
    395 	}
    396 };
    397 
    398 const struct pciide_product_desc pciide_cmd_products[] =  {
    399 	{ PCI_PRODUCT_CMDTECH_640,
    400 	  0,
    401 	  "CMD Technology PCI0640",
    402 	  cmd_chip_map
    403 	},
    404 	{ PCI_PRODUCT_CMDTECH_643,
    405 	  0,
    406 	  "CMD Technology PCI0643",
    407 	  cmd0643_9_chip_map,
    408 	},
    409 	{ PCI_PRODUCT_CMDTECH_646,
    410 	  0,
    411 	  "CMD Technology PCI0646",
    412 	  cmd0643_9_chip_map,
    413 	},
    414 	{ PCI_PRODUCT_CMDTECH_648,
    415 	  IDE_PCI_CLASS_OVERRIDE,
    416 	  "CMD Technology PCI0648",
    417 	  cmd0643_9_chip_map,
    418 	},
    419 	{ PCI_PRODUCT_CMDTECH_649,
    420 	  IDE_PCI_CLASS_OVERRIDE,
    421 	  "CMD Technology PCI0649",
    422 	  cmd0643_9_chip_map,
    423 	},
    424 	{ PCI_PRODUCT_CMDTECH_680,
    425 	  IDE_PCI_CLASS_OVERRIDE,
    426 	  "Silicon Image 0680",
    427 	  cmd680_chip_map,
    428 	},
    429 	{ PCI_PRODUCT_CMDTECH_3112,
    430 	  IDE_PCI_CLASS_OVERRIDE,
    431 	  "Silicon Image SATALink 3112",
    432 	  cmd3112_chip_map,
    433 	},
    434 	{ 0,
    435 	  0,
    436 	  NULL,
    437 	  NULL
    438 	}
    439 };
    440 
    441 const struct pciide_product_desc pciide_via_products[] =  {
    442 	{ PCI_PRODUCT_VIATECH_VT82C586_IDE,
    443 	  0,
    444 	  NULL,
    445 	  apollo_chip_map,
    446 	 },
    447 	{ PCI_PRODUCT_VIATECH_VT82C586A_IDE,
    448 	  0,
    449 	  NULL,
    450 	  apollo_chip_map,
    451 	},
    452 	{ PCI_PRODUCT_VIATECH_VT8237_SATA,
    453 	  IDE_PCI_CLASS_OVERRIDE,
    454 	  "VIA Technologies VT8237 SATA Controller",
    455 	  apollo_sata_chip_map,
    456 	},
    457 	{ 0,
    458 	  0,
    459 	  NULL,
    460 	  NULL
    461 	}
    462 };
    463 
    464 const struct pciide_product_desc pciide_cypress_products[] =  {
    465 	{ PCI_PRODUCT_CONTAQ_82C693,
    466 	  IDE_16BIT_IOSPACE,
    467 	  "Cypress 82C693 IDE Controller",
    468 	  cy693_chip_map,
    469 	},
    470 	{ 0,
    471 	  0,
    472 	  NULL,
    473 	  NULL
    474 	}
    475 };
    476 
    477 const struct pciide_product_desc pciide_sis_products[] =  {
    478 	{ PCI_PRODUCT_SIS_5597_IDE,
    479 	  0,
    480 	  NULL,
    481 	  sis_chip_map,
    482 	},
    483 	{ 0,
    484 	  0,
    485 	  NULL,
    486 	  NULL
    487 	}
    488 };
    489 
    490 const struct pciide_product_desc pciide_acer_products[] =  {
    491 	{ PCI_PRODUCT_ALI_M5229,
    492 	  0,
    493 	  "Acer Labs M5229 UDMA IDE Controller",
    494 	  acer_chip_map,
    495 	},
    496 	{ 0,
    497 	  0,
    498 	  NULL,
    499 	  NULL
    500 	}
    501 };
    502 
    503 const struct pciide_product_desc pciide_promise_products[] =  {
    504 	{ PCI_PRODUCT_PROMISE_ULTRA33,
    505 	  IDE_PCI_CLASS_OVERRIDE,
    506 	  "Promise Ultra33/ATA Bus Master IDE Accelerator",
    507 	  pdc202xx_chip_map,
    508 	},
    509 	{ PCI_PRODUCT_PROMISE_ULTRA66,
    510 	  IDE_PCI_CLASS_OVERRIDE,
    511 	  "Promise Ultra66/ATA Bus Master IDE Accelerator",
    512 	  pdc202xx_chip_map,
    513 	},
    514 	{ PCI_PRODUCT_PROMISE_ULTRA100,
    515 	  IDE_PCI_CLASS_OVERRIDE,
    516 	  "Promise Ultra100/ATA Bus Master IDE Accelerator",
    517 	  pdc202xx_chip_map,
    518 	},
    519 	{ PCI_PRODUCT_PROMISE_ULTRA100X,
    520 	  IDE_PCI_CLASS_OVERRIDE,
    521 	  "Promise Ultra100/ATA Bus Master IDE Accelerator",
    522 	  pdc202xx_chip_map,
    523 	},
    524 	{ PCI_PRODUCT_PROMISE_ULTRA100TX2,
    525 	  IDE_PCI_CLASS_OVERRIDE,
    526 	  "Promise Ultra100TX2/ATA Bus Master IDE Accelerator",
    527 	  pdc202xx_chip_map,
    528 	},
    529 	{ PCI_PRODUCT_PROMISE_ULTRA100TX2v2,
    530 	  IDE_PCI_CLASS_OVERRIDE,
    531 	  "Promise Ultra100TX2v2/ATA Bus Master IDE Accelerator",
    532 	  pdc202xx_chip_map,
    533 	},
    534 	{ PCI_PRODUCT_PROMISE_ULTRA133,
    535 	  IDE_PCI_CLASS_OVERRIDE,
    536 	  "Promise Ultra133/ATA Bus Master IDE Accelerator",
    537 	  pdc202xx_chip_map,
    538 	},
    539 	{ PCI_PRODUCT_PROMISE_ULTRA133TX2,
    540 	  IDE_PCI_CLASS_OVERRIDE,
    541 	  "Promise Ultra133TX2/ATA Bus Master IDE Accelerator",
    542 	  pdc202xx_chip_map,
    543 	},
    544 	{ PCI_PRODUCT_PROMISE_MBULTRA133,
    545 	  IDE_PCI_CLASS_OVERRIDE,
    546 	  "Promise Ultra133/ATA Bus Master IDE Accelerator (MB)",
    547 	  pdc202xx_chip_map,
    548 	},
    549 	{ PCI_PRODUCT_PROMISE_ULTRA133TX2v2,
    550 	  IDE_PCI_CLASS_OVERRIDE,
    551 	  "Promise Ultra133TX2v2/ATA Bus Master IDE Accelerator",
    552 	  pdc202xx_chip_map,
    553 	},
    554 	{ PCI_PRODUCT_PROMISE_FASTTRAK133LITE,
    555 	  IDE_PCI_CLASS_OVERRIDE,
    556 	  "Promise Fasttrak133 Lite Bus Master IDE Accelerator",
    557 	  pdc202xx_chip_map,
    558 	},
    559 	{ PCI_PRODUCT_PROMISE_SATA150TX2PLUS,
    560 	  IDE_PCI_CLASS_OVERRIDE,
    561 	  "Promise Serial ATA/150 TX2plus Bus Master IDE Accelerator",
    562 	  pdc202xx_chip_map,
    563 	},
    564 	{ 0,
    565 	  0,
    566 	  NULL,
    567 	  NULL
    568 	}
    569 };
    570 
    571 const struct pciide_product_desc pciide_opti_products[] =  {
    572 	{ PCI_PRODUCT_OPTI_82C621,
    573 	  0,
    574 	  "OPTi 82c621 PCI IDE controller",
    575 	  opti_chip_map,
    576 	},
    577 	{ PCI_PRODUCT_OPTI_82C568,
    578 	  0,
    579 	  "OPTi 82c568 (82c621 compatible) PCI IDE controller",
    580 	  opti_chip_map,
    581 	},
    582 	{ PCI_PRODUCT_OPTI_82D568,
    583 	  0,
    584 	  "OPTi 82d568 (82c621 compatible) PCI IDE controller",
    585 	  opti_chip_map,
    586 	},
    587 	{ 0,
    588 	  0,
    589 	  NULL,
    590 	  NULL
    591 	}
    592 };
    593 
    594 const struct pciide_product_desc pciide_triones_products[] =  {
    595 	{ PCI_PRODUCT_TRIONES_HPT366,
    596 	  IDE_PCI_CLASS_OVERRIDE,
    597 	  NULL,
    598 	  hpt_chip_map,
    599 	},
    600 	{ PCI_PRODUCT_TRIONES_HPT372,
    601 	  IDE_PCI_CLASS_OVERRIDE,
    602 	  NULL,
    603 	  hpt_chip_map
    604 	},
    605 	{ PCI_PRODUCT_TRIONES_HPT374,
    606 	  IDE_PCI_CLASS_OVERRIDE,
    607 	  NULL,
    608 	  hpt_chip_map
    609 	},
    610 	{ 0,
    611 	  0,
    612 	  NULL,
    613 	  NULL
    614 	}
    615 };
    616 
    617 const struct pciide_product_desc pciide_acard_products[] =  {
    618 	{ PCI_PRODUCT_ACARD_ATP850U,
    619 	  IDE_PCI_CLASS_OVERRIDE,
    620 	  "Acard ATP850U Ultra33 IDE Controller",
    621 	  acard_chip_map,
    622 	},
    623 	{ PCI_PRODUCT_ACARD_ATP860,
    624 	  IDE_PCI_CLASS_OVERRIDE,
    625 	  "Acard ATP860 Ultra66 IDE Controller",
    626 	  acard_chip_map,
    627 	},
    628 	{ PCI_PRODUCT_ACARD_ATP860A,
    629 	  IDE_PCI_CLASS_OVERRIDE,
    630 	  "Acard ATP860-A Ultra66 IDE Controller",
    631 	  acard_chip_map,
    632 	},
    633 	{ 0,
    634 	  0,
    635 	  NULL,
    636 	  NULL
    637 	}
    638 };
    639 
    640 const struct pciide_product_desc pciide_serverworks_products[] =  {
    641 	{ PCI_PRODUCT_SERVERWORKS_OSB4_IDE,
    642 	  0,
    643 	  "ServerWorks OSB4 IDE Controller",
    644 	  serverworks_chip_map,
    645 	},
    646 	{ PCI_PRODUCT_SERVERWORKS_CSB5_IDE,
    647 	  0,
    648 	  "ServerWorks CSB5 IDE Controller",
    649 	  serverworks_chip_map,
    650 	},
    651 	{ PCI_PRODUCT_SERVERWORKS_CSB6_IDE,
    652 	  0,
    653 	  "ServerWorks CSB6 RAID/IDE Controller",
    654 	  serverworks_chip_map,
    655 	},
    656 	{ 0,
    657 	  0,
    658 	  NULL,
    659 	}
    660 };
    661 
    662 const struct pciide_product_desc pciide_symphony_products[] = {
    663 	{ PCI_PRODUCT_SYMPHONY_82C105,
    664 	  0,
    665 	  "Symphony Labs 82C105 IDE controller",
    666 	  sl82c105_chip_map,
    667 	},
    668 	{ 0,
    669 	  0,
    670 	  NULL,
    671 	}
    672 };
    673 
    674 const struct pciide_product_desc pciide_winbond_products[] =  {
    675 	{ PCI_PRODUCT_WINBOND_W83C553F_1,
    676 	  0,
    677 	  "Winbond W83C553F IDE controller",
    678 	  sl82c105_chip_map,
    679 	},
    680 	{ 0,
    681 	  0,
    682 	  NULL,
    683 	}
    684 };
    685 
    686 struct pciide_vendor_desc {
    687 	u_int32_t ide_vendor;
    688 	const struct pciide_product_desc *ide_products;
    689 };
    690 
    691 const struct pciide_vendor_desc pciide_vendors[] = {
    692 	{ PCI_VENDOR_INTEL, pciide_intel_products },
    693 	{ PCI_VENDOR_CMDTECH, pciide_cmd_products },
    694 	{ PCI_VENDOR_VIATECH, pciide_via_products },
    695 	{ PCI_VENDOR_CONTAQ, pciide_cypress_products },
    696 	{ PCI_VENDOR_SIS, pciide_sis_products },
    697 	{ PCI_VENDOR_ALI, pciide_acer_products },
    698 	{ PCI_VENDOR_PROMISE, pciide_promise_products },
    699 	{ PCI_VENDOR_AMD, pciide_amd_products },
    700 	{ PCI_VENDOR_OPTI, pciide_opti_products },
    701 	{ PCI_VENDOR_TRIONES, pciide_triones_products },
    702 	{ PCI_VENDOR_ACARD, pciide_acard_products },
    703 	{ PCI_VENDOR_SERVERWORKS, pciide_serverworks_products },
    704 	{ PCI_VENDOR_SYMPHONY, pciide_symphony_products },
    705 	{ PCI_VENDOR_WINBOND, pciide_winbond_products },
    706 	{ PCI_VENDOR_NVIDIA, pciide_nvidia_products },
    707 	{ 0, NULL }
    708 };
    709 
    710 /* options passed via the 'flags' config keyword */
    711 #define	PCIIDE_OPTIONS_DMA	0x01
    712 #define	PCIIDE_OPTIONS_NODMA	0x02
    713 
    714 int	pciide_match __P((struct device *, struct cfdata *, void *));
    715 void	pciide_attach __P((struct device *, struct device *, void *));
    716 
    717 CFATTACH_DECL(pciide, sizeof(struct pciide_softc),
    718     pciide_match, pciide_attach, NULL, NULL);
    719 
    720 int	pciide_chipen __P((struct pciide_softc *, struct pci_attach_args *));
    721 void	pciide_mapregs_compat __P(( struct pci_attach_args *,
    722 	    struct pciide_channel *, int, bus_size_t *, bus_size_t*));
    723 void	pciide_mapregs_native __P((struct pci_attach_args *,
    724 	    struct pciide_channel *, bus_size_t *, bus_size_t *,
    725 	    int (*pci_intr) __P((void *))));
    726 void	pciide_mapreg_dma __P((struct pciide_softc *,
    727 	    struct pci_attach_args *));
    728 int	pciide_chansetup __P((struct pciide_softc *, int, pcireg_t));
    729 void	pciide_mapchan __P((struct pci_attach_args *,
    730 	    struct pciide_channel *, pcireg_t, bus_size_t *, bus_size_t *,
    731 	    int (*pci_intr) __P((void *))));
    732 void	pciide_map_compat_intr __P(( struct pci_attach_args *,
    733 	    struct pciide_channel *, int));
    734 int	pciide_compat_intr __P((void *));
    735 int	pciide_pci_intr __P((void *));
    736 const struct pciide_product_desc* pciide_lookup_product __P((u_int32_t));
    737 
    738 const struct pciide_product_desc *
    739 pciide_lookup_product(id)
    740 	u_int32_t id;
    741 {
    742 	const struct pciide_product_desc *pp;
    743 	const struct pciide_vendor_desc *vp;
    744 
    745 	for (vp = pciide_vendors; vp->ide_products != NULL; vp++)
    746 		if (PCI_VENDOR(id) == vp->ide_vendor)
    747 			break;
    748 
    749 	if ((pp = vp->ide_products) == NULL)
    750 		return NULL;
    751 
    752 	for (; pp->chip_map != NULL; pp++)
    753 		if (PCI_PRODUCT(id) == pp->ide_product)
    754 			break;
    755 
    756 	if (pp->chip_map == NULL)
    757 		return NULL;
    758 	return pp;
    759 }
    760 
    761 int
    762 pciide_match(parent, match, aux)
    763 	struct device *parent;
    764 	struct cfdata *match;
    765 	void *aux;
    766 {
    767 	struct pci_attach_args *pa = aux;
    768 	const struct pciide_product_desc *pp;
    769 
    770 	/*
    771 	 * Check the ID register to see that it's a PCI IDE controller.
    772 	 * If it is, we assume that we can deal with it; it _should_
    773 	 * work in a standardized way...
    774 	 */
    775 	if (PCI_CLASS(pa->pa_class) == PCI_CLASS_MASS_STORAGE &&
    776 	    PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_MASS_STORAGE_IDE) {
    777 		return (1);
    778 	}
    779 
    780 	/*
    781 	 * Some controllers (e.g. promise Utra-33) don't claim to be PCI IDE
    782 	 * controllers. Let see if we can deal with it anyway.
    783 	 */
    784 	pp = pciide_lookup_product(pa->pa_id);
    785 	if (pp != NULL && (pp->ide_flags & IDE_PCI_CLASS_OVERRIDE)) {
    786 		return (1);
    787 	}
    788 
    789 	return (0);
    790 }
    791 
    792 void
    793 pciide_attach(parent, self, aux)
    794 	struct device *parent, *self;
    795 	void *aux;
    796 {
    797 	struct pci_attach_args *pa = aux;
    798 	pci_chipset_tag_t pc = pa->pa_pc;
    799 	pcitag_t tag = pa->pa_tag;
    800 	struct pciide_softc *sc = (struct pciide_softc *)self;
    801 	pcireg_t csr;
    802 	char devinfo[256];
    803 	const char *displaydev;
    804 
    805 	aprint_naive(": disk controller\n");
    806 	aprint_normal("\n");
    807 
    808 	sc->sc_pci_vendor = PCI_VENDOR(pa->pa_id);
    809 	sc->sc_pp = pciide_lookup_product(pa->pa_id);
    810 	if (sc->sc_pp == NULL) {
    811 		sc->sc_pp = &default_product_desc;
    812 		pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo);
    813 		displaydev = devinfo;
    814 	} else
    815 		displaydev = sc->sc_pp->ide_name;
    816 
    817 	/* if displaydev == NULL, printf is done in chip-specific map */
    818 	if (displaydev)
    819 		aprint_normal("%s: %s (rev. 0x%02x)\n",
    820 		    sc->sc_wdcdev.sc_dev.dv_xname, displaydev,
    821 		    PCI_REVISION(pa->pa_class));
    822 
    823 	sc->sc_pc = pa->pa_pc;
    824 	sc->sc_tag = pa->pa_tag;
    825 
    826 	/* Set up DMA defaults; these might be adjusted by chip_map. */
    827 	sc->sc_dma_maxsegsz = IDEDMA_BYTE_COUNT_MAX;
    828 	sc->sc_dma_boundary = IDEDMA_BYTE_COUNT_ALIGN;
    829 
    830 #ifdef WDCDEBUG
    831 	if (wdcdebug_pciide_mask & DEBUG_PROBE)
    832 		pci_conf_print(sc->sc_pc, sc->sc_tag, NULL);
    833 #endif
    834 	sc->sc_pp->chip_map(sc, pa);
    835 
    836 	if (sc->sc_dma_ok) {
    837 		csr = pci_conf_read(pc, tag, PCI_COMMAND_STATUS_REG);
    838 		csr |= PCI_COMMAND_MASTER_ENABLE;
    839 		pci_conf_write(pc, tag, PCI_COMMAND_STATUS_REG, csr);
    840 	}
    841 	WDCDEBUG_PRINT(("pciide: command/status register=%x\n",
    842 	    pci_conf_read(pc, tag, PCI_COMMAND_STATUS_REG)), DEBUG_PROBE);
    843 
    844 	wdcattach(&sc->sc_wdcdev);
    845 }
    846 
    847 /* tell whether the chip is enabled or not */
    848 int
    849 pciide_chipen(sc, pa)
    850 	struct pciide_softc *sc;
    851 	struct pci_attach_args *pa;
    852 {
    853 	pcireg_t csr;
    854 
    855 	if ((pa->pa_flags & PCI_FLAGS_IO_ENABLED) == 0) {
    856 		csr = pci_conf_read(sc->sc_pc, sc->sc_tag,
    857 		    PCI_COMMAND_STATUS_REG);
    858 		aprint_normal("%s: device disabled (at %s)\n",
    859 		    sc->sc_wdcdev.sc_dev.dv_xname,
    860 		   (csr & PCI_COMMAND_IO_ENABLE) == 0 ?
    861 		   "device" : "bridge");
    862 		return 0;
    863 	}
    864 	return 1;
    865 }
    866 
    867 void
    868 pciide_mapregs_compat(pa, cp, compatchan, cmdsizep, ctlsizep)
    869 	struct pci_attach_args *pa;
    870 	struct pciide_channel *cp;
    871 	int compatchan;
    872 	bus_size_t *cmdsizep, *ctlsizep;
    873 {
    874 	struct pciide_softc *sc = (struct pciide_softc *)cp->wdc_channel.wdc;
    875 	struct channel_softc *wdc_cp = &cp->wdc_channel;
    876 
    877 	cp->compat = 1;
    878 	*cmdsizep = PCIIDE_COMPAT_CMD_SIZE;
    879 	*ctlsizep = PCIIDE_COMPAT_CTL_SIZE;
    880 
    881 	wdc_cp->cmd_iot = pa->pa_iot;
    882 	if (bus_space_map(wdc_cp->cmd_iot, PCIIDE_COMPAT_CMD_BASE(compatchan),
    883 	    PCIIDE_COMPAT_CMD_SIZE, 0, &wdc_cp->cmd_ioh) != 0) {
    884 		aprint_error("%s: couldn't map %s channel cmd regs\n",
    885 		    sc->sc_wdcdev.sc_dev.dv_xname, cp->name);
    886 		goto bad;
    887 	}
    888 
    889 	wdc_cp->ctl_iot = pa->pa_iot;
    890 	if (bus_space_map(wdc_cp->ctl_iot, PCIIDE_COMPAT_CTL_BASE(compatchan),
    891 	    PCIIDE_COMPAT_CTL_SIZE, 0, &wdc_cp->ctl_ioh) != 0) {
    892 		aprint_error("%s: couldn't map %s channel ctl regs\n",
    893 		    sc->sc_wdcdev.sc_dev.dv_xname, cp->name);
    894 		bus_space_unmap(wdc_cp->cmd_iot, wdc_cp->cmd_ioh,
    895 		    PCIIDE_COMPAT_CMD_SIZE);
    896 		goto bad;
    897 	}
    898 
    899 	wdc_cp->data32iot = wdc_cp->cmd_iot;
    900 	wdc_cp->data32ioh = wdc_cp->cmd_ioh;
    901 	pciide_map_compat_intr(pa, cp, compatchan);
    902 	return;
    903 
    904 bad:
    905 	cp->wdc_channel.ch_flags |= WDCF_DISABLED;
    906 	return;
    907 }
    908 
    909 void
    910 pciide_mapregs_native(pa, cp, cmdsizep, ctlsizep, pci_intr)
    911 	struct pci_attach_args * pa;
    912 	struct pciide_channel *cp;
    913 	bus_size_t *cmdsizep, *ctlsizep;
    914 	int (*pci_intr) __P((void *));
    915 {
    916 	struct pciide_softc *sc = (struct pciide_softc *)cp->wdc_channel.wdc;
    917 	struct channel_softc *wdc_cp = &cp->wdc_channel;
    918 	const char *intrstr;
    919 	pci_intr_handle_t intrhandle;
    920 
    921 	cp->compat = 0;
    922 
    923 	if (sc->sc_pci_ih == NULL) {
    924 		if (pci_intr_map(pa, &intrhandle) != 0) {
    925 			aprint_error("%s: couldn't map native-PCI interrupt\n",
    926 			    sc->sc_wdcdev.sc_dev.dv_xname);
    927 			goto bad;
    928 		}
    929 		intrstr = pci_intr_string(pa->pa_pc, intrhandle);
    930 		sc->sc_pci_ih = pci_intr_establish(pa->pa_pc,
    931 		    intrhandle, IPL_BIO, pci_intr, sc);
    932 		if (sc->sc_pci_ih != NULL) {
    933 			aprint_normal("%s: using %s for native-PCI interrupt\n",
    934 			    sc->sc_wdcdev.sc_dev.dv_xname,
    935 			    intrstr ? intrstr : "unknown interrupt");
    936 		} else {
    937 			aprint_error(
    938 			    "%s: couldn't establish native-PCI interrupt",
    939 			    sc->sc_wdcdev.sc_dev.dv_xname);
    940 			if (intrstr != NULL)
    941 				aprint_normal(" at %s", intrstr);
    942 			aprint_normal("\n");
    943 			goto bad;
    944 		}
    945 	}
    946 	cp->ih = sc->sc_pci_ih;
    947 	if (pci_mapreg_map(pa, PCIIDE_REG_CMD_BASE(wdc_cp->channel),
    948 	    PCI_MAPREG_TYPE_IO, 0,
    949 	    &wdc_cp->cmd_iot, &wdc_cp->cmd_ioh, NULL, cmdsizep) != 0) {
    950 		aprint_error("%s: couldn't map %s channel cmd regs\n",
    951 		    sc->sc_wdcdev.sc_dev.dv_xname, cp->name);
    952 		goto bad;
    953 	}
    954 
    955 	if (pci_mapreg_map(pa, PCIIDE_REG_CTL_BASE(wdc_cp->channel),
    956 	    PCI_MAPREG_TYPE_IO, 0,
    957 	    &wdc_cp->ctl_iot, &cp->ctl_baseioh, NULL, ctlsizep) != 0) {
    958 		aprint_error("%s: couldn't map %s channel ctl regs\n",
    959 		    sc->sc_wdcdev.sc_dev.dv_xname, cp->name);
    960 		bus_space_unmap(wdc_cp->cmd_iot, wdc_cp->cmd_ioh, *cmdsizep);
    961 		goto bad;
    962 	}
    963 	/*
    964 	 * In native mode, 4 bytes of I/O space are mapped for the control
    965 	 * register, the control register is at offset 2. Pass the generic
    966 	 * code a handle for only one byte at the right offset.
    967 	 */
    968 	if (bus_space_subregion(wdc_cp->ctl_iot, cp->ctl_baseioh, 2, 1,
    969 	    &wdc_cp->ctl_ioh) != 0) {
    970 		aprint_error("%s: unable to subregion %s channel ctl regs\n",
    971 		    sc->sc_wdcdev.sc_dev.dv_xname, cp->name);
    972 		bus_space_unmap(wdc_cp->cmd_iot, wdc_cp->cmd_ioh, *cmdsizep);
    973 		bus_space_unmap(wdc_cp->cmd_iot, cp->ctl_baseioh, *ctlsizep);
    974 		goto bad;
    975 	}
    976 
    977 	wdc_cp->data32iot = wdc_cp->cmd_iot;
    978 	wdc_cp->data32ioh = wdc_cp->cmd_ioh;
    979 	return;
    980 
    981 bad:
    982 	cp->wdc_channel.ch_flags |= WDCF_DISABLED;
    983 	return;
    984 }
    985 
    986 void
    987 pciide_mapreg_dma(sc, pa)
    988 	struct pciide_softc *sc;
    989 	struct pci_attach_args *pa;
    990 {
    991 	pcireg_t maptype;
    992 	bus_addr_t addr;
    993 
    994 	/*
    995 	 * Map DMA registers
    996 	 *
    997 	 * Note that sc_dma_ok is the right variable to test to see if
    998 	 * DMA can be done.  If the interface doesn't support DMA,
    999 	 * sc_dma_ok will never be non-zero.  If the DMA regs couldn't
   1000 	 * be mapped, it'll be zero.  I.e., sc_dma_ok will only be
   1001 	 * non-zero if the interface supports DMA and the registers
   1002 	 * could be mapped.
   1003 	 *
   1004 	 * XXX Note that despite the fact that the Bus Master IDE specs
   1005 	 * XXX say that "The bus master IDE function uses 16 bytes of IO
   1006 	 * XXX space," some controllers (at least the United
   1007 	 * XXX Microelectronics UM8886BF) place it in memory space.
   1008 	 */
   1009 	maptype = pci_mapreg_type(pa->pa_pc, pa->pa_tag,
   1010 	    PCIIDE_REG_BUS_MASTER_DMA);
   1011 
   1012 	switch (maptype) {
   1013 	case PCI_MAPREG_TYPE_IO:
   1014 		sc->sc_dma_ok = (pci_mapreg_info(pa->pa_pc, pa->pa_tag,
   1015 		    PCIIDE_REG_BUS_MASTER_DMA, PCI_MAPREG_TYPE_IO,
   1016 		    &addr, NULL, NULL) == 0);
   1017 		if (sc->sc_dma_ok == 0) {
   1018 			aprint_normal(
   1019 			    ", but unused (couldn't query registers)");
   1020 			break;
   1021 		}
   1022 		if ((sc->sc_pp->ide_flags & IDE_16BIT_IOSPACE)
   1023 		    && addr >= 0x10000) {
   1024 			sc->sc_dma_ok = 0;
   1025 			aprint_normal(
   1026 			    ", but unused (registers at unsafe address "
   1027 			    "%#lx)", (unsigned long)addr);
   1028 			break;
   1029 		}
   1030 		/* FALLTHROUGH */
   1031 
   1032 	case PCI_MAPREG_MEM_TYPE_32BIT:
   1033 		sc->sc_dma_ok = (pci_mapreg_map(pa,
   1034 		    PCIIDE_REG_BUS_MASTER_DMA, maptype, 0,
   1035 		    &sc->sc_dma_iot, &sc->sc_dma_ioh, NULL, NULL) == 0);
   1036 		sc->sc_dmat = pa->pa_dmat;
   1037 		if (sc->sc_dma_ok == 0) {
   1038 			aprint_normal(", but unused (couldn't map registers)");
   1039 		} else {
   1040 			sc->sc_wdcdev.dma_arg = sc;
   1041 			sc->sc_wdcdev.dma_init = pciide_dma_init;
   1042 			sc->sc_wdcdev.dma_start = pciide_dma_start;
   1043 			sc->sc_wdcdev.dma_finish = pciide_dma_finish;
   1044 		}
   1045 
   1046 		if (sc->sc_wdcdev.sc_dev.dv_cfdata->cf_flags &
   1047 		    PCIIDE_OPTIONS_NODMA) {
   1048 			aprint_normal(
   1049 			    ", but unused (forced off by config file)");
   1050 			sc->sc_dma_ok = 0;
   1051 		}
   1052 		break;
   1053 
   1054 	default:
   1055 		sc->sc_dma_ok = 0;
   1056 		aprint_normal(
   1057 		    ", but unsupported register maptype (0x%x)", maptype);
   1058 	}
   1059 }
   1060 
   1061 int
   1062 pciide_compat_intr(arg)
   1063 	void *arg;
   1064 {
   1065 	struct pciide_channel *cp = arg;
   1066 
   1067 #ifdef DIAGNOSTIC
   1068 	/* should only be called for a compat channel */
   1069 	if (cp->compat == 0)
   1070 		panic("pciide compat intr called for non-compat chan %p", cp);
   1071 #endif
   1072 	return (wdcintr(&cp->wdc_channel));
   1073 }
   1074 
   1075 int
   1076 pciide_pci_intr(arg)
   1077 	void *arg;
   1078 {
   1079 	struct pciide_softc *sc = arg;
   1080 	struct pciide_channel *cp;
   1081 	struct channel_softc *wdc_cp;
   1082 	int i, rv, crv;
   1083 
   1084 	rv = 0;
   1085 	for (i = 0; i < sc->sc_wdcdev.nchannels; i++) {
   1086 		cp = &sc->pciide_channels[i];
   1087 		wdc_cp = &cp->wdc_channel;
   1088 
   1089 		/* If a compat channel skip. */
   1090 		if (cp->compat)
   1091 			continue;
   1092 		/* if this channel not waiting for intr, skip */
   1093 		if ((wdc_cp->ch_flags & WDCF_IRQ_WAIT) == 0)
   1094 			continue;
   1095 
   1096 		crv = wdcintr(wdc_cp);
   1097 		if (crv == 0)
   1098 			;		/* leave rv alone */
   1099 		else if (crv == 1)
   1100 			rv = 1;		/* claim the intr */
   1101 		else if (rv == 0)	/* crv should be -1 in this case */
   1102 			rv = crv;	/* if we've done no better, take it */
   1103 	}
   1104 	return (rv);
   1105 }
   1106 
   1107 void
   1108 pciide_channel_dma_setup(cp)
   1109 	struct pciide_channel *cp;
   1110 {
   1111 	int drive;
   1112 	struct pciide_softc *sc = (struct pciide_softc *)cp->wdc_channel.wdc;
   1113 	struct ata_drive_datas *drvp;
   1114 
   1115 	for (drive = 0; drive < 2; drive++) {
   1116 		drvp = &cp->wdc_channel.ch_drive[drive];
   1117 		/* If no drive, skip */
   1118 		if ((drvp->drive_flags & DRIVE) == 0)
   1119 			continue;
   1120 		/* setup DMA if needed */
   1121 		if (((drvp->drive_flags & DRIVE_DMA) == 0 &&
   1122 		    (drvp->drive_flags & DRIVE_UDMA) == 0) ||
   1123 		    sc->sc_dma_ok == 0) {
   1124 			drvp->drive_flags &= ~(DRIVE_DMA | DRIVE_UDMA);
   1125 			continue;
   1126 		}
   1127 		if (pciide_dma_table_setup(sc, cp->wdc_channel.channel, drive)
   1128 		    != 0) {
   1129 			/* Abort DMA setup */
   1130 			drvp->drive_flags &= ~(DRIVE_DMA | DRIVE_UDMA);
   1131 			continue;
   1132 		}
   1133 	}
   1134 }
   1135 
   1136 int
   1137 pciide_dma_table_setup(sc, channel, drive)
   1138 	struct pciide_softc *sc;
   1139 	int channel, drive;
   1140 {
   1141 	bus_dma_segment_t seg;
   1142 	int error, rseg;
   1143 	const bus_size_t dma_table_size =
   1144 	    sizeof(struct idedma_table) * NIDEDMA_TABLES;
   1145 	struct pciide_dma_maps *dma_maps =
   1146 	    &sc->pciide_channels[channel].dma_maps[drive];
   1147 
   1148 	/* If table was already allocated, just return */
   1149 	if (dma_maps->dma_table)
   1150 		return 0;
   1151 
   1152 	/* Allocate memory for the DMA tables and map it */
   1153 	if ((error = bus_dmamem_alloc(sc->sc_dmat, dma_table_size,
   1154 	    IDEDMA_TBL_ALIGN, IDEDMA_TBL_ALIGN, &seg, 1, &rseg,
   1155 	    BUS_DMA_NOWAIT)) != 0) {
   1156 		aprint_error(dmaerrfmt, sc->sc_wdcdev.sc_dev.dv_xname, channel,
   1157 		    "allocate", drive, error);
   1158 		return error;
   1159 	}
   1160 	if ((error = bus_dmamem_map(sc->sc_dmat, &seg, rseg,
   1161 	    dma_table_size,
   1162 	    (caddr_t *)&dma_maps->dma_table,
   1163 	    BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) != 0) {
   1164 		aprint_error(dmaerrfmt, sc->sc_wdcdev.sc_dev.dv_xname, channel,
   1165 		    "map", drive, error);
   1166 		return error;
   1167 	}
   1168 	WDCDEBUG_PRINT(("pciide_dma_table_setup: table at %p len %lu, "
   1169 	    "phy 0x%lx\n", dma_maps->dma_table, (u_long)dma_table_size,
   1170 	    (unsigned long)seg.ds_addr), DEBUG_PROBE);
   1171 	/* Create and load table DMA map for this disk */
   1172 	if ((error = bus_dmamap_create(sc->sc_dmat, dma_table_size,
   1173 	    1, dma_table_size, IDEDMA_TBL_ALIGN, BUS_DMA_NOWAIT,
   1174 	    &dma_maps->dmamap_table)) != 0) {
   1175 		aprint_error(dmaerrfmt, sc->sc_wdcdev.sc_dev.dv_xname, channel,
   1176 		    "create", drive, error);
   1177 		return error;
   1178 	}
   1179 	if ((error = bus_dmamap_load(sc->sc_dmat,
   1180 	    dma_maps->dmamap_table,
   1181 	    dma_maps->dma_table,
   1182 	    dma_table_size, NULL, BUS_DMA_NOWAIT)) != 0) {
   1183 		aprint_error(dmaerrfmt, sc->sc_wdcdev.sc_dev.dv_xname, channel,
   1184 		    "load", drive, error);
   1185 		return error;
   1186 	}
   1187 	WDCDEBUG_PRINT(("pciide_dma_table_setup: phy addr of table 0x%lx\n",
   1188 	    (unsigned long)dma_maps->dmamap_table->dm_segs[0].ds_addr),
   1189 	    DEBUG_PROBE);
   1190 	/* Create a xfer DMA map for this drive */
   1191 	if ((error = bus_dmamap_create(sc->sc_dmat, IDEDMA_BYTE_COUNT_MAX,
   1192 	    NIDEDMA_TABLES, sc->sc_dma_maxsegsz, sc->sc_dma_boundary,
   1193 	    BUS_DMA_NOWAIT | BUS_DMA_ALLOCNOW,
   1194 	    &dma_maps->dmamap_xfer)) != 0) {
   1195 		aprint_error(dmaerrfmt, sc->sc_wdcdev.sc_dev.dv_xname, channel,
   1196 		    "create xfer", drive, error);
   1197 		return error;
   1198 	}
   1199 	return 0;
   1200 }
   1201 
   1202 int
   1203 pciide_dma_init(v, channel, drive, databuf, datalen, flags)
   1204 	void *v;
   1205 	int channel, drive;
   1206 	void *databuf;
   1207 	size_t datalen;
   1208 	int flags;
   1209 {
   1210 	struct pciide_softc *sc = v;
   1211 	int error, seg;
   1212 	struct pciide_dma_maps *dma_maps =
   1213 	    &sc->pciide_channels[channel].dma_maps[drive];
   1214 
   1215 	error = bus_dmamap_load(sc->sc_dmat,
   1216 	    dma_maps->dmamap_xfer,
   1217 	    databuf, datalen, NULL, BUS_DMA_NOWAIT | BUS_DMA_STREAMING |
   1218 	    ((flags & WDC_DMA_READ) ? BUS_DMA_READ : BUS_DMA_WRITE));
   1219 	if (error) {
   1220 		printf(dmaerrfmt, sc->sc_wdcdev.sc_dev.dv_xname, channel,
   1221 		    "load xfer", drive, error);
   1222 		return error;
   1223 	}
   1224 
   1225 	bus_dmamap_sync(sc->sc_dmat, dma_maps->dmamap_xfer, 0,
   1226 	    dma_maps->dmamap_xfer->dm_mapsize,
   1227 	    (flags & WDC_DMA_READ) ?
   1228 	    BUS_DMASYNC_PREREAD : BUS_DMASYNC_PREWRITE);
   1229 
   1230 	for (seg = 0; seg < dma_maps->dmamap_xfer->dm_nsegs; seg++) {
   1231 #ifdef DIAGNOSTIC
   1232 		/* A segment must not cross a 64k boundary */
   1233 		{
   1234 		u_long phys = dma_maps->dmamap_xfer->dm_segs[seg].ds_addr;
   1235 		u_long len = dma_maps->dmamap_xfer->dm_segs[seg].ds_len;
   1236 		if ((phys & ~IDEDMA_BYTE_COUNT_MASK) !=
   1237 		    ((phys + len - 1) & ~IDEDMA_BYTE_COUNT_MASK)) {
   1238 			printf("pciide_dma: segment %d physical addr 0x%lx"
   1239 			    " len 0x%lx not properly aligned\n",
   1240 			    seg, phys, len);
   1241 			panic("pciide_dma: buf align");
   1242 		}
   1243 		}
   1244 #endif
   1245 		dma_maps->dma_table[seg].base_addr =
   1246 		    htole32(dma_maps->dmamap_xfer->dm_segs[seg].ds_addr);
   1247 		dma_maps->dma_table[seg].byte_count =
   1248 		    htole32(dma_maps->dmamap_xfer->dm_segs[seg].ds_len &
   1249 		    IDEDMA_BYTE_COUNT_MASK);
   1250 		WDCDEBUG_PRINT(("\t seg %d len %d addr 0x%x\n",
   1251 		   seg, le32toh(dma_maps->dma_table[seg].byte_count),
   1252 		   le32toh(dma_maps->dma_table[seg].base_addr)), DEBUG_DMA);
   1253 
   1254 	}
   1255 	dma_maps->dma_table[dma_maps->dmamap_xfer->dm_nsegs -1].byte_count |=
   1256 	    htole32(IDEDMA_BYTE_COUNT_EOT);
   1257 
   1258 	bus_dmamap_sync(sc->sc_dmat, dma_maps->dmamap_table, 0,
   1259 	    dma_maps->dmamap_table->dm_mapsize,
   1260 	    BUS_DMASYNC_PREWRITE);
   1261 
   1262 	/* Maps are ready. Start DMA function */
   1263 #ifdef DIAGNOSTIC
   1264 	if (dma_maps->dmamap_table->dm_segs[0].ds_addr & ~IDEDMA_TBL_MASK) {
   1265 		printf("pciide_dma_init: addr 0x%lx not properly aligned\n",
   1266 		    (u_long)dma_maps->dmamap_table->dm_segs[0].ds_addr);
   1267 		panic("pciide_dma_init: table align");
   1268 	}
   1269 #endif
   1270 
   1271 	/* Clear status bits */
   1272 	bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   1273 	    IDEDMA_CTL + IDEDMA_SCH_OFFSET * channel,
   1274 	    bus_space_read_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   1275 		IDEDMA_CTL + IDEDMA_SCH_OFFSET * channel));
   1276 	/* Write table addr */
   1277 	bus_space_write_4(sc->sc_dma_iot, sc->sc_dma_ioh,
   1278 	    IDEDMA_TBL + IDEDMA_SCH_OFFSET * channel,
   1279 	    dma_maps->dmamap_table->dm_segs[0].ds_addr);
   1280 	/* set read/write */
   1281 	bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   1282 	    IDEDMA_CMD + IDEDMA_SCH_OFFSET * channel,
   1283 	    (flags & WDC_DMA_READ) ? IDEDMA_CMD_WRITE: 0);
   1284 	/* remember flags */
   1285 	dma_maps->dma_flags = flags;
   1286 	return 0;
   1287 }
   1288 
   1289 void
   1290 pciide_dma_start(v, channel, drive)
   1291 	void *v;
   1292 	int channel, drive;
   1293 {
   1294 	struct pciide_softc *sc = v;
   1295 
   1296 	WDCDEBUG_PRINT(("pciide_dma_start\n"),DEBUG_XFERS);
   1297 	bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   1298 	    IDEDMA_CMD + IDEDMA_SCH_OFFSET * channel,
   1299 	    bus_space_read_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   1300 		IDEDMA_CMD + IDEDMA_SCH_OFFSET * channel) | IDEDMA_CMD_START);
   1301 }
   1302 
   1303 int
   1304 pciide_dma_finish(v, channel, drive, force)
   1305 	void *v;
   1306 	int channel, drive;
   1307 	int force;
   1308 {
   1309 	struct pciide_softc *sc = v;
   1310 	u_int8_t status;
   1311 	int error = 0;
   1312 	struct pciide_dma_maps *dma_maps =
   1313 	    &sc->pciide_channels[channel].dma_maps[drive];
   1314 
   1315 	status = bus_space_read_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   1316 	    IDEDMA_CTL + IDEDMA_SCH_OFFSET * channel);
   1317 	WDCDEBUG_PRINT(("pciide_dma_finish: status 0x%x\n", status),
   1318 	    DEBUG_XFERS);
   1319 
   1320 	if (force == 0 && (status & IDEDMA_CTL_INTR) == 0)
   1321 		return WDC_DMAST_NOIRQ;
   1322 
   1323 	/* stop DMA channel */
   1324 	bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   1325 	    IDEDMA_CMD + IDEDMA_SCH_OFFSET * channel,
   1326 	    bus_space_read_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   1327 		IDEDMA_CMD + IDEDMA_SCH_OFFSET * channel) & ~IDEDMA_CMD_START);
   1328 
   1329 	/* Unload the map of the data buffer */
   1330 	bus_dmamap_sync(sc->sc_dmat, dma_maps->dmamap_xfer, 0,
   1331 	    dma_maps->dmamap_xfer->dm_mapsize,
   1332 	    (dma_maps->dma_flags & WDC_DMA_READ) ?
   1333 	    BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE);
   1334 	bus_dmamap_unload(sc->sc_dmat, dma_maps->dmamap_xfer);
   1335 
   1336 	if ((status & IDEDMA_CTL_ERR) != 0) {
   1337 		printf("%s:%d:%d: bus-master DMA error: status=0x%x\n",
   1338 		    sc->sc_wdcdev.sc_dev.dv_xname, channel, drive, status);
   1339 		error |= WDC_DMAST_ERR;
   1340 	}
   1341 
   1342 	if ((status & IDEDMA_CTL_INTR) == 0) {
   1343 		printf("%s:%d:%d: bus-master DMA error: missing interrupt, "
   1344 		    "status=0x%x\n", sc->sc_wdcdev.sc_dev.dv_xname, channel,
   1345 		    drive, status);
   1346 		error |= WDC_DMAST_NOIRQ;
   1347 	}
   1348 
   1349 	if ((status & IDEDMA_CTL_ACT) != 0) {
   1350 		/* data underrun, may be a valid condition for ATAPI */
   1351 		error |= WDC_DMAST_UNDER;
   1352 	}
   1353 	return error;
   1354 }
   1355 
   1356 void
   1357 pciide_irqack(chp)
   1358 	struct channel_softc *chp;
   1359 {
   1360 	struct pciide_channel *cp = (struct pciide_channel*)chp;
   1361 	struct pciide_softc *sc = (struct pciide_softc *)cp->wdc_channel.wdc;
   1362 
   1363 	/* clear status bits in IDE DMA registers */
   1364 	bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   1365 	    IDEDMA_CTL + IDEDMA_SCH_OFFSET * chp->channel,
   1366 	    bus_space_read_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   1367 		IDEDMA_CTL + IDEDMA_SCH_OFFSET * chp->channel));
   1368 }
   1369 
   1370 /* some common code used by several chip_map */
   1371 int
   1372 pciide_chansetup(sc, channel, interface)
   1373 	struct pciide_softc *sc;
   1374 	int channel;
   1375 	pcireg_t interface;
   1376 {
   1377 	struct pciide_channel *cp = &sc->pciide_channels[channel];
   1378 	sc->wdc_chanarray[channel] = &cp->wdc_channel;
   1379 	cp->name = PCIIDE_CHANNEL_NAME(channel);
   1380 	cp->wdc_channel.channel = channel;
   1381 	cp->wdc_channel.wdc = &sc->sc_wdcdev;
   1382 	cp->wdc_channel.ch_queue =
   1383 	    malloc(sizeof(struct channel_queue), M_DEVBUF, M_NOWAIT);
   1384 	if (cp->wdc_channel.ch_queue == NULL) {
   1385 		aprint_error("%s %s channel: "
   1386 		    "can't allocate memory for command queue",
   1387 		sc->sc_wdcdev.sc_dev.dv_xname, cp->name);
   1388 		return 0;
   1389 	}
   1390 	aprint_normal("%s: %s channel %s to %s mode\n",
   1391 	    sc->sc_wdcdev.sc_dev.dv_xname, cp->name,
   1392 	    (interface & PCIIDE_INTERFACE_SETTABLE(channel)) ?
   1393 	    "configured" : "wired",
   1394 	    (interface & PCIIDE_INTERFACE_PCI(channel)) ?
   1395 	    "native-PCI" : "compatibility");
   1396 	return 1;
   1397 }
   1398 
   1399 /* some common code used by several chip channel_map */
   1400 void
   1401 pciide_mapchan(pa, cp, interface, cmdsizep, ctlsizep, pci_intr)
   1402 	struct pci_attach_args *pa;
   1403 	struct pciide_channel *cp;
   1404 	pcireg_t interface;
   1405 	bus_size_t *cmdsizep, *ctlsizep;
   1406 	int (*pci_intr) __P((void *));
   1407 {
   1408 	struct channel_softc *wdc_cp = &cp->wdc_channel;
   1409 
   1410 	if (interface & PCIIDE_INTERFACE_PCI(wdc_cp->channel))
   1411 		pciide_mapregs_native(pa, cp, cmdsizep, ctlsizep, pci_intr);
   1412 	else
   1413 		pciide_mapregs_compat(pa, cp, wdc_cp->channel, cmdsizep,
   1414 		    ctlsizep);
   1415 }
   1416 
   1417 /*
   1418  * generic code to map the compat intr.
   1419  */
   1420 void
   1421 pciide_map_compat_intr(pa, cp, compatchan)
   1422 	struct pci_attach_args *pa;
   1423 	struct pciide_channel *cp;
   1424 	int compatchan;
   1425 {
   1426 	struct pciide_softc *sc = (struct pciide_softc *)cp->wdc_channel.wdc;
   1427 
   1428 #ifdef __HAVE_PCIIDE_MACHDEP_COMPAT_INTR_ESTABLISH
   1429 	cp->ih = pciide_machdep_compat_intr_establish(&sc->sc_wdcdev.sc_dev,
   1430 	    pa, compatchan, pciide_compat_intr, cp);
   1431 	if (cp->ih == NULL) {
   1432 #endif
   1433 		aprint_error("%s: no compatibility interrupt for use by %s "
   1434 		    "channel\n", sc->sc_wdcdev.sc_dev.dv_xname, cp->name);
   1435 		cp->wdc_channel.ch_flags |= WDCF_DISABLED;
   1436 #ifdef __HAVE_PCIIDE_MACHDEP_COMPAT_INTR_ESTABLISH
   1437 	}
   1438 #endif
   1439 }
   1440 
   1441 void
   1442 default_chip_map(sc, pa)
   1443 	struct pciide_softc *sc;
   1444 	struct pci_attach_args *pa;
   1445 {
   1446 	struct pciide_channel *cp;
   1447 	pcireg_t interface = PCI_INTERFACE(pa->pa_class);
   1448 	pcireg_t csr;
   1449 	int channel, drive;
   1450 	struct ata_drive_datas *drvp;
   1451 	u_int8_t idedma_ctl;
   1452 	bus_size_t cmdsize, ctlsize;
   1453 	char *failreason;
   1454 
   1455 	if (pciide_chipen(sc, pa) == 0)
   1456 		return;
   1457 
   1458 	if (interface & PCIIDE_INTERFACE_BUS_MASTER_DMA) {
   1459 		aprint_normal("%s: bus-master DMA support present",
   1460 		    sc->sc_wdcdev.sc_dev.dv_xname);
   1461 		if (sc->sc_pp == &default_product_desc &&
   1462 		    (sc->sc_wdcdev.sc_dev.dv_cfdata->cf_flags &
   1463 		    PCIIDE_OPTIONS_DMA) == 0) {
   1464 			aprint_normal(", but unused (no driver support)");
   1465 			sc->sc_dma_ok = 0;
   1466 		} else {
   1467 			pciide_mapreg_dma(sc, pa);
   1468 			if (sc->sc_dma_ok != 0)
   1469 				aprint_normal(", used without full driver "
   1470 				    "support");
   1471 		}
   1472 	} else {
   1473 		aprint_normal("%s: hardware does not support DMA",
   1474 		    sc->sc_wdcdev.sc_dev.dv_xname);
   1475 		sc->sc_dma_ok = 0;
   1476 	}
   1477 	aprint_normal("\n");
   1478 	if (sc->sc_dma_ok) {
   1479 		sc->sc_wdcdev.cap |= WDC_CAPABILITY_DMA | WDC_CAPABILITY_IRQACK;
   1480 		sc->sc_wdcdev.irqack = pciide_irqack;
   1481 	}
   1482 	sc->sc_wdcdev.PIO_cap = 0;
   1483 	sc->sc_wdcdev.DMA_cap = 0;
   1484 
   1485 	sc->sc_wdcdev.channels = sc->wdc_chanarray;
   1486 	sc->sc_wdcdev.nchannels = PCIIDE_NUM_CHANNELS;
   1487 	sc->sc_wdcdev.cap |= WDC_CAPABILITY_DATA16;
   1488 
   1489 	for (channel = 0; channel < sc->sc_wdcdev.nchannels; channel++) {
   1490 		cp = &sc->pciide_channels[channel];
   1491 		if (pciide_chansetup(sc, channel, interface) == 0)
   1492 			continue;
   1493 		pciide_mapchan(pa, cp, interface, &cmdsize, &ctlsize,
   1494 		    pciide_pci_intr);
   1495 		if (cp->wdc_channel.ch_flags & WDCF_DISABLED)
   1496 			continue;
   1497 		/*
   1498 		 * Check to see if something appears to be there.
   1499 		 */
   1500 		failreason = NULL;
   1501 		if (!wdcprobe(&cp->wdc_channel)) {
   1502 			failreason = "not responding; disabled or no drives?";
   1503 			goto next;
   1504 		}
   1505 		/*
   1506 		 * Now, make sure it's actually attributable to this PCI IDE
   1507 		 * channel by trying to access the channel again while the
   1508 		 * PCI IDE controller's I/O space is disabled.  (If the
   1509 		 * channel no longer appears to be there, it belongs to
   1510 		 * this controller.)  YUCK!
   1511 		 */
   1512 		csr = pci_conf_read(sc->sc_pc, sc->sc_tag,
   1513 		    PCI_COMMAND_STATUS_REG);
   1514 		pci_conf_write(sc->sc_pc, sc->sc_tag, PCI_COMMAND_STATUS_REG,
   1515 		    csr & ~PCI_COMMAND_IO_ENABLE);
   1516 		if (wdcprobe(&cp->wdc_channel))
   1517 			failreason = "other hardware responding at addresses";
   1518 		pci_conf_write(sc->sc_pc, sc->sc_tag,
   1519 		    PCI_COMMAND_STATUS_REG, csr);
   1520 next:
   1521 		if (failreason) {
   1522 			aprint_error("%s: %s channel ignored (%s)\n",
   1523 			    sc->sc_wdcdev.sc_dev.dv_xname, cp->name,
   1524 			    failreason);
   1525 			cp->wdc_channel.ch_flags |= WDCF_DISABLED;
   1526 		}
   1527 	}
   1528 
   1529 	if (sc->sc_dma_ok == 0)
   1530 		return;
   1531 
   1532 	/* Allocate DMA maps */
   1533 	for (channel = 0; channel < sc->sc_wdcdev.nchannels; channel++) {
   1534 		idedma_ctl = 0;
   1535 		cp = &sc->pciide_channels[channel];
   1536 		for (drive = 0; drive < 2; drive++) {
   1537 			drvp = &cp->wdc_channel.ch_drive[drive];
   1538 			/* If no drive, skip */
   1539 			if ((drvp->drive_flags & DRIVE) == 0)
   1540 				continue;
   1541 			if ((drvp->drive_flags & DRIVE_DMA) == 0)
   1542 				continue;
   1543 			if (pciide_dma_table_setup(sc, channel, drive) != 0) {
   1544 				/* Abort DMA setup */
   1545 				aprint_error(
   1546 				    "%s:%d:%d: can't allocate DMA maps, "
   1547 				    "using PIO transfers\n",
   1548 				    sc->sc_wdcdev.sc_dev.dv_xname,
   1549 				    channel, drive);
   1550 				drvp->drive_flags &= ~DRIVE_DMA;
   1551 			}
   1552 			aprint_normal("%s:%d:%d: using DMA data transfers\n",
   1553 			    sc->sc_wdcdev.sc_dev.dv_xname,
   1554 			    channel, drive);
   1555 			idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
   1556 		}
   1557 		if (idedma_ctl != 0) {
   1558 			/* Add software bits in status register */
   1559 			bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   1560 			    IDEDMA_CTL + (IDEDMA_SCH_OFFSET * channel),
   1561 			    idedma_ctl);
   1562 		}
   1563 	}
   1564 }
   1565 
   1566 void
   1567 sata_setup_channel(chp)
   1568 	struct channel_softc *chp;
   1569 {
   1570 	struct ata_drive_datas *drvp;
   1571 	int drive;
   1572 	u_int32_t idedma_ctl;
   1573 	struct pciide_channel *cp = (struct pciide_channel*)chp;
   1574 	struct pciide_softc *sc = (struct pciide_softc*)cp->wdc_channel.wdc;
   1575 
   1576 	/* setup DMA if needed */
   1577 	pciide_channel_dma_setup(cp);
   1578 
   1579 	idedma_ctl = 0;
   1580 
   1581 	for (drive = 0; drive < 2; drive++) {
   1582 		drvp = &chp->ch_drive[drive];
   1583 		/* If no drive, skip */
   1584 		if ((drvp->drive_flags & DRIVE) == 0)
   1585 			continue;
   1586 		if (drvp->drive_flags & DRIVE_UDMA) {
   1587 			/* use Ultra/DMA */
   1588 			drvp->drive_flags &= ~DRIVE_DMA;
   1589 			idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
   1590 		} else if (drvp->drive_flags & DRIVE_DMA) {
   1591 			idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
   1592 		}
   1593 	}
   1594 
   1595 	/*
   1596 	 * Nothing to do to setup modes; it is meaningless in S-ATA
   1597 	 * (but many S-ATA drives still want to get the SET_FEATURE
   1598 	 * command).
   1599 	 */
   1600 	if (idedma_ctl != 0) {
   1601 		/* Add software bits in status register */
   1602 		bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   1603 		    IDEDMA_CTL + (IDEDMA_SCH_OFFSET * chp->channel),
   1604 		    idedma_ctl);
   1605 	}
   1606 }
   1607 
   1608 void
   1609 piix_chip_map(sc, pa)
   1610 	struct pciide_softc *sc;
   1611 	struct pci_attach_args *pa;
   1612 {
   1613 	struct pciide_channel *cp;
   1614 	int channel;
   1615 	u_int32_t idetim;
   1616 	bus_size_t cmdsize, ctlsize;
   1617 
   1618 	if (pciide_chipen(sc, pa) == 0)
   1619 		return;
   1620 
   1621 	aprint_normal("%s: bus-master DMA support present",
   1622 	    sc->sc_wdcdev.sc_dev.dv_xname);
   1623 	pciide_mapreg_dma(sc, pa);
   1624 	aprint_normal("\n");
   1625 	sc->sc_wdcdev.cap |= WDC_CAPABILITY_DATA16 | WDC_CAPABILITY_DATA32 |
   1626 	    WDC_CAPABILITY_MODE;
   1627 	if (sc->sc_dma_ok) {
   1628 		sc->sc_wdcdev.cap |= WDC_CAPABILITY_DMA | WDC_CAPABILITY_IRQACK;
   1629 		sc->sc_wdcdev.irqack = pciide_irqack;
   1630 		switch(sc->sc_pp->ide_product) {
   1631 		case PCI_PRODUCT_INTEL_82371AB_IDE:
   1632 		case PCI_PRODUCT_INTEL_82440MX_IDE:
   1633 		case PCI_PRODUCT_INTEL_82801AA_IDE:
   1634 		case PCI_PRODUCT_INTEL_82801AB_IDE:
   1635 		case PCI_PRODUCT_INTEL_82801BA_IDE:
   1636 		case PCI_PRODUCT_INTEL_82801BAM_IDE:
   1637 		case PCI_PRODUCT_INTEL_82801CA_IDE_1:
   1638 		case PCI_PRODUCT_INTEL_82801CA_IDE_2:
   1639 		case PCI_PRODUCT_INTEL_82801DB_IDE:
   1640 		case PCI_PRODUCT_INTEL_82801DBM_IDE:
   1641 		case PCI_PRODUCT_INTEL_82801EB_IDE:
   1642 			sc->sc_wdcdev.cap |= WDC_CAPABILITY_UDMA;
   1643 		}
   1644 	}
   1645 	sc->sc_wdcdev.PIO_cap = 4;
   1646 	sc->sc_wdcdev.DMA_cap = 2;
   1647 	switch(sc->sc_pp->ide_product) {
   1648 	case PCI_PRODUCT_INTEL_82801AA_IDE:
   1649 		sc->sc_wdcdev.UDMA_cap = 4;
   1650 		break;
   1651 	case PCI_PRODUCT_INTEL_82801BA_IDE:
   1652 	case PCI_PRODUCT_INTEL_82801BAM_IDE:
   1653 	case PCI_PRODUCT_INTEL_82801CA_IDE_1:
   1654 	case PCI_PRODUCT_INTEL_82801CA_IDE_2:
   1655 	case PCI_PRODUCT_INTEL_82801DB_IDE:
   1656 	case PCI_PRODUCT_INTEL_82801DBM_IDE:
   1657 	case PCI_PRODUCT_INTEL_82801EB_IDE:
   1658 		sc->sc_wdcdev.UDMA_cap = 5;
   1659 		break;
   1660 	default:
   1661 		sc->sc_wdcdev.UDMA_cap = 2;
   1662 	}
   1663 	if (sc->sc_pp->ide_product == PCI_PRODUCT_INTEL_82371FB_IDE)
   1664 		sc->sc_wdcdev.set_modes = piix_setup_channel;
   1665 	else
   1666 		sc->sc_wdcdev.set_modes = piix3_4_setup_channel;
   1667 	sc->sc_wdcdev.channels = sc->wdc_chanarray;
   1668 	sc->sc_wdcdev.nchannels = PCIIDE_NUM_CHANNELS;
   1669 
   1670 	WDCDEBUG_PRINT(("piix_setup_chip: old idetim=0x%x",
   1671 	    pci_conf_read(sc->sc_pc, sc->sc_tag, PIIX_IDETIM)),
   1672 	    DEBUG_PROBE);
   1673 	if (sc->sc_pp->ide_product != PCI_PRODUCT_INTEL_82371FB_IDE) {
   1674 		WDCDEBUG_PRINT((", sidetim=0x%x",
   1675 		    pci_conf_read(sc->sc_pc, sc->sc_tag, PIIX_SIDETIM)),
   1676 		    DEBUG_PROBE);
   1677 		if (sc->sc_wdcdev.cap & WDC_CAPABILITY_UDMA) {
   1678 			WDCDEBUG_PRINT((", udamreg 0x%x",
   1679 			    pci_conf_read(sc->sc_pc, sc->sc_tag, PIIX_UDMAREG)),
   1680 			    DEBUG_PROBE);
   1681 		}
   1682 		if (sc->sc_pp->ide_product == PCI_PRODUCT_INTEL_82801AA_IDE ||
   1683 		    sc->sc_pp->ide_product == PCI_PRODUCT_INTEL_82801AB_IDE ||
   1684 		    sc->sc_pp->ide_product == PCI_PRODUCT_INTEL_82801BA_IDE ||
   1685 		    sc->sc_pp->ide_product == PCI_PRODUCT_INTEL_82801BAM_IDE ||
   1686 		    sc->sc_pp->ide_product == PCI_PRODUCT_INTEL_82801CA_IDE_1 ||
   1687 		    sc->sc_pp->ide_product == PCI_PRODUCT_INTEL_82801CA_IDE_2 ||
   1688 		    sc->sc_pp->ide_product == PCI_PRODUCT_INTEL_82801DB_IDE ||
   1689 		    sc->sc_pp->ide_product == PCI_PRODUCT_INTEL_82801DBM_IDE ||
   1690 		    sc->sc_pp->ide_product == PCI_PRODUCT_INTEL_82801EB_IDE ) {
   1691 			WDCDEBUG_PRINT((", IDE_CONTROL 0x%x",
   1692 			    pci_conf_read(sc->sc_pc, sc->sc_tag, PIIX_CONFIG)),
   1693 			    DEBUG_PROBE);
   1694 		}
   1695 
   1696 	}
   1697 	WDCDEBUG_PRINT(("\n"), DEBUG_PROBE);
   1698 
   1699 	for (channel = 0; channel < sc->sc_wdcdev.nchannels; channel++) {
   1700 		cp = &sc->pciide_channels[channel];
   1701 		/* PIIX is compat-only */
   1702 		if (pciide_chansetup(sc, channel, 0) == 0)
   1703 			continue;
   1704 		idetim = pci_conf_read(sc->sc_pc, sc->sc_tag, PIIX_IDETIM);
   1705 		if ((PIIX_IDETIM_READ(idetim, channel) &
   1706 		    PIIX_IDETIM_IDE) == 0) {
   1707 #if 1
   1708 			aprint_normal("%s: %s channel ignored (disabled)\n",
   1709 			    sc->sc_wdcdev.sc_dev.dv_xname, cp->name);
   1710 			cp->wdc_channel.ch_flags |= WDCF_DISABLED;
   1711 			continue;
   1712 #else
   1713 			pcireg_t interface;
   1714 
   1715 			idetim = PIIX_IDETIM_SET(idetim, PIIX_IDETIM_IDE,
   1716 			    channel);
   1717 			pci_conf_write(sc->sc_pc, sc->sc_tag, PIIX_IDETIM,
   1718 			    idetim);
   1719 			interface = PCI_INTERFACE(pci_conf_read(sc->sc_pc,
   1720 			    sc->sc_tag, PCI_CLASS_REG));
   1721 			aprint_normal("channel %d idetim=%08x interface=%02x\n",
   1722 			    channel, idetim, interface);
   1723 #endif
   1724 		}
   1725 		/* PIIX are compat-only pciide devices */
   1726 		pciide_mapchan(pa, cp, 0, &cmdsize, &ctlsize, pciide_pci_intr);
   1727 	}
   1728 
   1729 	WDCDEBUG_PRINT(("piix_setup_chip: idetim=0x%x",
   1730 	    pci_conf_read(sc->sc_pc, sc->sc_tag, PIIX_IDETIM)),
   1731 	    DEBUG_PROBE);
   1732 	if (sc->sc_pp->ide_product != PCI_PRODUCT_INTEL_82371FB_IDE) {
   1733 		WDCDEBUG_PRINT((", sidetim=0x%x",
   1734 		    pci_conf_read(sc->sc_pc, sc->sc_tag, PIIX_SIDETIM)),
   1735 		    DEBUG_PROBE);
   1736 		if (sc->sc_wdcdev.cap & WDC_CAPABILITY_UDMA) {
   1737 			WDCDEBUG_PRINT((", udamreg 0x%x",
   1738 			    pci_conf_read(sc->sc_pc, sc->sc_tag, PIIX_UDMAREG)),
   1739 			    DEBUG_PROBE);
   1740 		}
   1741 		if (sc->sc_pp->ide_product == PCI_PRODUCT_INTEL_82801AA_IDE ||
   1742 		    sc->sc_pp->ide_product == PCI_PRODUCT_INTEL_82801AB_IDE ||
   1743 		    sc->sc_pp->ide_product == PCI_PRODUCT_INTEL_82801BA_IDE ||
   1744 		    sc->sc_pp->ide_product == PCI_PRODUCT_INTEL_82801BAM_IDE ||
   1745 		    sc->sc_pp->ide_product == PCI_PRODUCT_INTEL_82801CA_IDE_1 ||
   1746 		    sc->sc_pp->ide_product == PCI_PRODUCT_INTEL_82801CA_IDE_2 ||
   1747 		    sc->sc_pp->ide_product == PCI_PRODUCT_INTEL_82801DB_IDE ||
   1748 		    sc->sc_pp->ide_product == PCI_PRODUCT_INTEL_82801DBM_IDE) {
   1749 			WDCDEBUG_PRINT((", IDE_CONTROL 0x%x",
   1750 			    pci_conf_read(sc->sc_pc, sc->sc_tag, PIIX_CONFIG)),
   1751 			    DEBUG_PROBE);
   1752 		}
   1753 	}
   1754 	WDCDEBUG_PRINT(("\n"), DEBUG_PROBE);
   1755 }
   1756 
   1757 void
   1758 piix_setup_channel(chp)
   1759 	struct channel_softc *chp;
   1760 {
   1761 	u_int8_t mode[2], drive;
   1762 	u_int32_t oidetim, idetim, idedma_ctl;
   1763 	struct pciide_channel *cp = (struct pciide_channel*)chp;
   1764 	struct pciide_softc *sc = (struct pciide_softc *)cp->wdc_channel.wdc;
   1765 	struct ata_drive_datas *drvp = cp->wdc_channel.ch_drive;
   1766 
   1767 	oidetim = pci_conf_read(sc->sc_pc, sc->sc_tag, PIIX_IDETIM);
   1768 	idetim = PIIX_IDETIM_CLEAR(oidetim, 0xffff, chp->channel);
   1769 	idedma_ctl = 0;
   1770 
   1771 	/* set up new idetim: Enable IDE registers decode */
   1772 	idetim = PIIX_IDETIM_SET(idetim, PIIX_IDETIM_IDE,
   1773 	    chp->channel);
   1774 
   1775 	/* setup DMA */
   1776 	pciide_channel_dma_setup(cp);
   1777 
   1778 	/*
   1779 	 * Here we have to mess up with drives mode: PIIX can't have
   1780 	 * different timings for master and slave drives.
   1781 	 * We need to find the best combination.
   1782 	 */
   1783 
   1784 	/* If both drives supports DMA, take the lower mode */
   1785 	if ((drvp[0].drive_flags & DRIVE_DMA) &&
   1786 	    (drvp[1].drive_flags & DRIVE_DMA)) {
   1787 		mode[0] = mode[1] =
   1788 		    min(drvp[0].DMA_mode, drvp[1].DMA_mode);
   1789 		    drvp[0].DMA_mode = mode[0];
   1790 		    drvp[1].DMA_mode = mode[1];
   1791 		goto ok;
   1792 	}
   1793 	/*
   1794 	 * If only one drive supports DMA, use its mode, and
   1795 	 * put the other one in PIO mode 0 if mode not compatible
   1796 	 */
   1797 	if (drvp[0].drive_flags & DRIVE_DMA) {
   1798 		mode[0] = drvp[0].DMA_mode;
   1799 		mode[1] = drvp[1].PIO_mode;
   1800 		if (piix_isp_pio[mode[1]] != piix_isp_dma[mode[0]] ||
   1801 		    piix_rtc_pio[mode[1]] != piix_rtc_dma[mode[0]])
   1802 			mode[1] = drvp[1].PIO_mode = 0;
   1803 		goto ok;
   1804 	}
   1805 	if (drvp[1].drive_flags & DRIVE_DMA) {
   1806 		mode[1] = drvp[1].DMA_mode;
   1807 		mode[0] = drvp[0].PIO_mode;
   1808 		if (piix_isp_pio[mode[0]] != piix_isp_dma[mode[1]] ||
   1809 		    piix_rtc_pio[mode[0]] != piix_rtc_dma[mode[1]])
   1810 			mode[0] = drvp[0].PIO_mode = 0;
   1811 		goto ok;
   1812 	}
   1813 	/*
   1814 	 * If both drives are not DMA, takes the lower mode, unless
   1815 	 * one of them is PIO mode < 2
   1816 	 */
   1817 	if (drvp[0].PIO_mode < 2) {
   1818 		mode[0] = drvp[0].PIO_mode = 0;
   1819 		mode[1] = drvp[1].PIO_mode;
   1820 	} else if (drvp[1].PIO_mode < 2) {
   1821 		mode[1] = drvp[1].PIO_mode = 0;
   1822 		mode[0] = drvp[0].PIO_mode;
   1823 	} else {
   1824 		mode[0] = mode[1] =
   1825 		    min(drvp[1].PIO_mode, drvp[0].PIO_mode);
   1826 		drvp[0].PIO_mode = mode[0];
   1827 		drvp[1].PIO_mode = mode[1];
   1828 	}
   1829 ok:	/* The modes are setup */
   1830 	for (drive = 0; drive < 2; drive++) {
   1831 		if (drvp[drive].drive_flags & DRIVE_DMA) {
   1832 			idetim |= piix_setup_idetim_timings(
   1833 			    mode[drive], 1, chp->channel);
   1834 			goto end;
   1835 		}
   1836 	}
   1837 	/* If we are there, none of the drives are DMA */
   1838 	if (mode[0] >= 2)
   1839 		idetim |= piix_setup_idetim_timings(
   1840 		    mode[0], 0, chp->channel);
   1841 	else
   1842 		idetim |= piix_setup_idetim_timings(
   1843 		    mode[1], 0, chp->channel);
   1844 end:	/*
   1845 	 * timing mode is now set up in the controller. Enable
   1846 	 * it per-drive
   1847 	 */
   1848 	for (drive = 0; drive < 2; drive++) {
   1849 		/* If no drive, skip */
   1850 		if ((drvp[drive].drive_flags & DRIVE) == 0)
   1851 			continue;
   1852 		idetim |= piix_setup_idetim_drvs(&drvp[drive]);
   1853 		if (drvp[drive].drive_flags & DRIVE_DMA)
   1854 			idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
   1855 	}
   1856 	if (idedma_ctl != 0) {
   1857 		/* Add software bits in status register */
   1858 		bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   1859 		    IDEDMA_CTL + (IDEDMA_SCH_OFFSET * chp->channel),
   1860 		    idedma_ctl);
   1861 	}
   1862 	pci_conf_write(sc->sc_pc, sc->sc_tag, PIIX_IDETIM, idetim);
   1863 }
   1864 
   1865 void
   1866 piix3_4_setup_channel(chp)
   1867 	struct channel_softc *chp;
   1868 {
   1869 	struct ata_drive_datas *drvp;
   1870 	u_int32_t oidetim, idetim, sidetim, udmareg, ideconf, idedma_ctl;
   1871 	struct pciide_channel *cp = (struct pciide_channel*)chp;
   1872 	struct pciide_softc *sc = (struct pciide_softc *)cp->wdc_channel.wdc;
   1873 	int drive;
   1874 	int channel = chp->channel;
   1875 
   1876 	oidetim = pci_conf_read(sc->sc_pc, sc->sc_tag, PIIX_IDETIM);
   1877 	sidetim = pci_conf_read(sc->sc_pc, sc->sc_tag, PIIX_SIDETIM);
   1878 	udmareg = pci_conf_read(sc->sc_pc, sc->sc_tag, PIIX_UDMAREG);
   1879 	ideconf = pci_conf_read(sc->sc_pc, sc->sc_tag, PIIX_CONFIG);
   1880 	idetim = PIIX_IDETIM_CLEAR(oidetim, 0xffff, channel);
   1881 	sidetim &= ~(PIIX_SIDETIM_ISP_MASK(channel) |
   1882 	    PIIX_SIDETIM_RTC_MASK(channel));
   1883 	idedma_ctl = 0;
   1884 
   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 		    sc->sc_pp->ide_product == PCI_PRODUCT_INTEL_82801DBM_IDE ||
   1910 		    sc->sc_pp->ide_product == PCI_PRODUCT_INTEL_82801EB_IDE) {
   1911 			ideconf |= PIIX_CONFIG_PINGPONG;
   1912 		}
   1913 		if (sc->sc_pp->ide_product == PCI_PRODUCT_INTEL_82801BA_IDE ||
   1914 		    sc->sc_pp->ide_product == PCI_PRODUCT_INTEL_82801BAM_IDE ||
   1915 		    sc->sc_pp->ide_product == PCI_PRODUCT_INTEL_82801CA_IDE_1 ||
   1916 		    sc->sc_pp->ide_product == PCI_PRODUCT_INTEL_82801CA_IDE_2 ||
   1917 		    sc->sc_pp->ide_product == PCI_PRODUCT_INTEL_82801DB_IDE ||
   1918 		    sc->sc_pp->ide_product == PCI_PRODUCT_INTEL_82801DBM_IDE ||
   1919 		    sc->sc_pp->ide_product == PCI_PRODUCT_INTEL_82801EB_IDE) {
   1920 			/* setup Ultra/100 */
   1921 			if (drvp->UDMA_mode > 2 &&
   1922 			    (ideconf & PIIX_CONFIG_CR(channel, drive)) == 0)
   1923 				drvp->UDMA_mode = 2;
   1924 			if (drvp->UDMA_mode > 4) {
   1925 				ideconf |= PIIX_CONFIG_UDMA100(channel, drive);
   1926 			} else {
   1927 				ideconf &= ~PIIX_CONFIG_UDMA100(channel, drive);
   1928 				if (drvp->UDMA_mode > 2) {
   1929 					ideconf |= PIIX_CONFIG_UDMA66(channel,
   1930 					    drive);
   1931 				} else {
   1932 					ideconf &= ~PIIX_CONFIG_UDMA66(channel,
   1933 					    drive);
   1934 				}
   1935 			}
   1936 		}
   1937 		if (sc->sc_pp->ide_product == PCI_PRODUCT_INTEL_82801AA_IDE) {
   1938 			/* setup Ultra/66 */
   1939 			if (drvp->UDMA_mode > 2 &&
   1940 			    (ideconf & PIIX_CONFIG_CR(channel, drive)) == 0)
   1941 				drvp->UDMA_mode = 2;
   1942 			if (drvp->UDMA_mode > 2)
   1943 				ideconf |= PIIX_CONFIG_UDMA66(channel, drive);
   1944 			else
   1945 				ideconf &= ~PIIX_CONFIG_UDMA66(channel, drive);
   1946 		}
   1947 		if ((chp->wdc->cap & WDC_CAPABILITY_UDMA) &&
   1948 		    (drvp->drive_flags & DRIVE_UDMA)) {
   1949 			/* use Ultra/DMA */
   1950 			drvp->drive_flags &= ~DRIVE_DMA;
   1951 			udmareg |= PIIX_UDMACTL_DRV_EN( channel, drive);
   1952 			udmareg |= PIIX_UDMATIM_SET(
   1953 			    piix4_sct_udma[drvp->UDMA_mode], channel, drive);
   1954 		} else {
   1955 			/* use Multiword DMA */
   1956 			drvp->drive_flags &= ~DRIVE_UDMA;
   1957 			if (drive == 0) {
   1958 				idetim |= piix_setup_idetim_timings(
   1959 				    drvp->DMA_mode, 1, channel);
   1960 			} else {
   1961 				sidetim |= piix_setup_sidetim_timings(
   1962 					drvp->DMA_mode, 1, channel);
   1963 				idetim =PIIX_IDETIM_SET(idetim,
   1964 				    PIIX_IDETIM_SITRE, channel);
   1965 			}
   1966 		}
   1967 		idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
   1968 
   1969 pio:		/* use PIO mode */
   1970 		idetim |= piix_setup_idetim_drvs(drvp);
   1971 		if (drive == 0) {
   1972 			idetim |= piix_setup_idetim_timings(
   1973 			    drvp->PIO_mode, 0, channel);
   1974 		} else {
   1975 			sidetim |= piix_setup_sidetim_timings(
   1976 				drvp->PIO_mode, 0, channel);
   1977 			idetim =PIIX_IDETIM_SET(idetim,
   1978 			    PIIX_IDETIM_SITRE, channel);
   1979 		}
   1980 	}
   1981 	if (idedma_ctl != 0) {
   1982 		/* Add software bits in status register */
   1983 		bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   1984 		    IDEDMA_CTL + (IDEDMA_SCH_OFFSET * channel),
   1985 		    idedma_ctl);
   1986 	}
   1987 	pci_conf_write(sc->sc_pc, sc->sc_tag, PIIX_IDETIM, idetim);
   1988 	pci_conf_write(sc->sc_pc, sc->sc_tag, PIIX_SIDETIM, sidetim);
   1989 	pci_conf_write(sc->sc_pc, sc->sc_tag, PIIX_UDMAREG, udmareg);
   1990 	pci_conf_write(sc->sc_pc, sc->sc_tag, PIIX_CONFIG, ideconf);
   1991 }
   1992 
   1993 
   1994 /* setup ISP and RTC fields, based on mode */
   1995 static u_int32_t
   1996 piix_setup_idetim_timings(mode, dma, channel)
   1997 	u_int8_t mode;
   1998 	u_int8_t dma;
   1999 	u_int8_t channel;
   2000 {
   2001 
   2002 	if (dma)
   2003 		return PIIX_IDETIM_SET(0,
   2004 		    PIIX_IDETIM_ISP_SET(piix_isp_dma[mode]) |
   2005 		    PIIX_IDETIM_RTC_SET(piix_rtc_dma[mode]),
   2006 		    channel);
   2007 	else
   2008 		return PIIX_IDETIM_SET(0,
   2009 		    PIIX_IDETIM_ISP_SET(piix_isp_pio[mode]) |
   2010 		    PIIX_IDETIM_RTC_SET(piix_rtc_pio[mode]),
   2011 		    channel);
   2012 }
   2013 
   2014 /* setup DTE, PPE, IE and TIME field based on PIO mode */
   2015 static u_int32_t
   2016 piix_setup_idetim_drvs(drvp)
   2017 	struct ata_drive_datas *drvp;
   2018 {
   2019 	u_int32_t ret = 0;
   2020 	struct channel_softc *chp = drvp->chnl_softc;
   2021 	u_int8_t channel = chp->channel;
   2022 	u_int8_t drive = drvp->drive;
   2023 
   2024 	/*
   2025 	 * If drive is using UDMA, timings setups are independant
   2026 	 * So just check DMA and PIO here.
   2027 	 */
   2028 	if (drvp->drive_flags & DRIVE_DMA) {
   2029 		/* if mode = DMA mode 0, use compatible timings */
   2030 		if ((drvp->drive_flags & DRIVE_DMA) &&
   2031 		    drvp->DMA_mode == 0) {
   2032 			drvp->PIO_mode = 0;
   2033 			return ret;
   2034 		}
   2035 		ret = PIIX_IDETIM_SET(ret, PIIX_IDETIM_TIME(drive), channel);
   2036 		/*
   2037 		 * PIO and DMA timings are the same, use fast timings for PIO
   2038 		 * too, else use compat timings.
   2039 		 */
   2040 		if ((piix_isp_pio[drvp->PIO_mode] !=
   2041 		    piix_isp_dma[drvp->DMA_mode]) ||
   2042 		    (piix_rtc_pio[drvp->PIO_mode] !=
   2043 		    piix_rtc_dma[drvp->DMA_mode]))
   2044 			drvp->PIO_mode = 0;
   2045 		/* if PIO mode <= 2, use compat timings for PIO */
   2046 		if (drvp->PIO_mode <= 2) {
   2047 			ret = PIIX_IDETIM_SET(ret, PIIX_IDETIM_DTE(drive),
   2048 			    channel);
   2049 			return ret;
   2050 		}
   2051 	}
   2052 
   2053 	/*
   2054 	 * Now setup PIO modes. If mode < 2, use compat timings.
   2055 	 * Else enable fast timings. Enable IORDY and prefetch/post
   2056 	 * if PIO mode >= 3.
   2057 	 */
   2058 
   2059 	if (drvp->PIO_mode < 2)
   2060 		return ret;
   2061 
   2062 	ret = PIIX_IDETIM_SET(ret, PIIX_IDETIM_TIME(drive), channel);
   2063 	if (drvp->PIO_mode >= 3) {
   2064 		ret = PIIX_IDETIM_SET(ret, PIIX_IDETIM_IE(drive), channel);
   2065 		ret = PIIX_IDETIM_SET(ret, PIIX_IDETIM_PPE(drive), channel);
   2066 	}
   2067 	return ret;
   2068 }
   2069 
   2070 /* setup values in SIDETIM registers, based on mode */
   2071 static u_int32_t
   2072 piix_setup_sidetim_timings(mode, dma, channel)
   2073 	u_int8_t mode;
   2074 	u_int8_t dma;
   2075 	u_int8_t channel;
   2076 {
   2077 	if (dma)
   2078 		return PIIX_SIDETIM_ISP_SET(piix_isp_dma[mode], channel) |
   2079 		    PIIX_SIDETIM_RTC_SET(piix_rtc_dma[mode], channel);
   2080 	else
   2081 		return PIIX_SIDETIM_ISP_SET(piix_isp_pio[mode], channel) |
   2082 		    PIIX_SIDETIM_RTC_SET(piix_rtc_pio[mode], channel);
   2083 }
   2084 
   2085 void
   2086 amd7x6_chip_map(sc, pa)
   2087 	struct pciide_softc *sc;
   2088 	struct pci_attach_args *pa;
   2089 {
   2090 	struct pciide_channel *cp;
   2091 	pcireg_t interface = PCI_INTERFACE(pa->pa_class);
   2092 	int channel;
   2093 	pcireg_t chanenable;
   2094 	bus_size_t cmdsize, ctlsize;
   2095 
   2096 	if (pciide_chipen(sc, pa) == 0)
   2097 		return;
   2098 
   2099 	aprint_normal("%s: bus-master DMA support present",
   2100 	    sc->sc_wdcdev.sc_dev.dv_xname);
   2101 	pciide_mapreg_dma(sc, pa);
   2102 	aprint_normal("\n");
   2103 	sc->sc_wdcdev.cap = WDC_CAPABILITY_DATA16 | WDC_CAPABILITY_DATA32 |
   2104 	    WDC_CAPABILITY_MODE;
   2105 	if (sc->sc_dma_ok) {
   2106 		sc->sc_wdcdev.cap |= WDC_CAPABILITY_DMA | WDC_CAPABILITY_UDMA;
   2107 		sc->sc_wdcdev.cap |= WDC_CAPABILITY_IRQACK;
   2108 		sc->sc_wdcdev.irqack = pciide_irqack;
   2109 	}
   2110 	sc->sc_wdcdev.PIO_cap = 4;
   2111 	sc->sc_wdcdev.DMA_cap = 2;
   2112 
   2113 	switch (sc->sc_pci_vendor) {
   2114 	case PCI_VENDOR_AMD:
   2115 		switch (sc->sc_pp->ide_product) {
   2116 		case PCI_PRODUCT_AMD_PBC766_IDE:
   2117 		case PCI_PRODUCT_AMD_PBC768_IDE:
   2118 		case PCI_PRODUCT_AMD_PBC8111_IDE:
   2119 			sc->sc_wdcdev.UDMA_cap = 5;
   2120 			break;
   2121 		default:
   2122 			sc->sc_wdcdev.UDMA_cap = 4;
   2123 		}
   2124 		sc->sc_amd_regbase = AMD7X6_AMD_REGBASE;
   2125 		break;
   2126 
   2127 	case PCI_VENDOR_NVIDIA:
   2128 		switch (sc->sc_pp->ide_product) {
   2129 		case PCI_PRODUCT_NVIDIA_NFORCE_ATA100:
   2130 			sc->sc_wdcdev.UDMA_cap = 5;
   2131 			break;
   2132 		case PCI_PRODUCT_NVIDIA_NFORCE2_ATA133:
   2133 			sc->sc_wdcdev.UDMA_cap = 6;
   2134 			break;
   2135 		}
   2136 		sc->sc_amd_regbase = AMD7X6_NVIDIA_REGBASE;
   2137 		break;
   2138 
   2139 	default:
   2140 		panic("amd7x6_chip_map: unknown vendor");
   2141 	}
   2142 	sc->sc_wdcdev.set_modes = amd7x6_setup_channel;
   2143 	sc->sc_wdcdev.channels = sc->wdc_chanarray;
   2144 	sc->sc_wdcdev.nchannels = PCIIDE_NUM_CHANNELS;
   2145 	chanenable = pci_conf_read(sc->sc_pc, sc->sc_tag,
   2146 	    AMD7X6_CHANSTATUS_EN(sc));
   2147 
   2148 	WDCDEBUG_PRINT(("amd7x6_chip_map: Channel enable=0x%x\n", chanenable),
   2149 	    DEBUG_PROBE);
   2150 	for (channel = 0; channel < sc->sc_wdcdev.nchannels; channel++) {
   2151 		cp = &sc->pciide_channels[channel];
   2152 		if (pciide_chansetup(sc, channel, interface) == 0)
   2153 			continue;
   2154 
   2155 		if ((chanenable & AMD7X6_CHAN_EN(channel)) == 0) {
   2156 			aprint_normal("%s: %s channel ignored (disabled)\n",
   2157 			    sc->sc_wdcdev.sc_dev.dv_xname, cp->name);
   2158 			cp->wdc_channel.ch_flags |= WDCF_DISABLED;
   2159 			continue;
   2160 		}
   2161 		pciide_mapchan(pa, cp, interface, &cmdsize, &ctlsize,
   2162 		    pciide_pci_intr);
   2163 	}
   2164 	pci_conf_write(sc->sc_pc, sc->sc_tag, AMD7X6_CHANSTATUS_EN(sc),
   2165 	    chanenable);
   2166 	return;
   2167 }
   2168 
   2169 void
   2170 amd7x6_setup_channel(chp)
   2171 	struct channel_softc *chp;
   2172 {
   2173 	u_int32_t udmatim_reg, datatim_reg;
   2174 	u_int8_t idedma_ctl;
   2175 	int mode, drive;
   2176 	struct ata_drive_datas *drvp;
   2177 	struct pciide_channel *cp = (struct pciide_channel*)chp;
   2178 	struct pciide_softc *sc = (struct pciide_softc *)cp->wdc_channel.wdc;
   2179 #ifndef PCIIDE_AMD756_ENABLEDMA
   2180 	int rev = PCI_REVISION(
   2181 	    pci_conf_read(sc->sc_pc, sc->sc_tag, PCI_CLASS_REG));
   2182 #endif
   2183 
   2184 	idedma_ctl = 0;
   2185 	datatim_reg = pci_conf_read(sc->sc_pc, sc->sc_tag, AMD7X6_DATATIM(sc));
   2186 	udmatim_reg = pci_conf_read(sc->sc_pc, sc->sc_tag, AMD7X6_UDMA(sc));
   2187 	datatim_reg &= ~AMD7X6_DATATIM_MASK(chp->channel);
   2188 	udmatim_reg &= ~AMD7X6_UDMA_MASK(chp->channel);
   2189 
   2190 	/* setup DMA if needed */
   2191 	pciide_channel_dma_setup(cp);
   2192 
   2193 	for (drive = 0; drive < 2; drive++) {
   2194 		drvp = &chp->ch_drive[drive];
   2195 		/* If no drive, skip */
   2196 		if ((drvp->drive_flags & DRIVE) == 0)
   2197 			continue;
   2198 		/* add timing values, setup DMA if needed */
   2199 		if (((drvp->drive_flags & DRIVE_DMA) == 0 &&
   2200 		    (drvp->drive_flags & DRIVE_UDMA) == 0)) {
   2201 			mode = drvp->PIO_mode;
   2202 			goto pio;
   2203 		}
   2204 		if ((chp->wdc->cap & WDC_CAPABILITY_UDMA) &&
   2205 		    (drvp->drive_flags & DRIVE_UDMA)) {
   2206 			/* use Ultra/DMA */
   2207 			drvp->drive_flags &= ~DRIVE_DMA;
   2208 			udmatim_reg |= AMD7X6_UDMA_EN(chp->channel, drive) |
   2209 			    AMD7X6_UDMA_EN_MTH(chp->channel, drive) |
   2210 			    AMD7X6_UDMA_TIME(chp->channel, drive,
   2211 				amd7x6_udma_tim[drvp->UDMA_mode]);
   2212 			/* can use PIO timings, MW DMA unused */
   2213 			mode = drvp->PIO_mode;
   2214 		} else {
   2215 			/* use Multiword DMA, but only if revision is OK */
   2216 			drvp->drive_flags &= ~DRIVE_UDMA;
   2217 #ifndef PCIIDE_AMD756_ENABLEDMA
   2218 			/*
   2219 			 * The workaround doesn't seem to be necessary
   2220 			 * with all drives, so it can be disabled by
   2221 			 * PCIIDE_AMD756_ENABLEDMA. It causes a hard hang if
   2222 			 * triggered.
   2223 			 */
   2224 			if (sc->sc_pci_vendor == PCI_VENDOR_AMD &&
   2225 			    sc->sc_pp->ide_product ==
   2226 			      PCI_PRODUCT_AMD_PBC756_IDE &&
   2227 			    AMD756_CHIPREV_DISABLEDMA(rev)) {
   2228 				aprint_normal(
   2229 				    "%s:%d:%d: multi-word DMA disabled due "
   2230 				    "to chip revision\n",
   2231 				    sc->sc_wdcdev.sc_dev.dv_xname,
   2232 				    chp->channel, drive);
   2233 				mode = drvp->PIO_mode;
   2234 				drvp->drive_flags &= ~DRIVE_DMA;
   2235 				goto pio;
   2236 			}
   2237 #endif
   2238 			/* mode = min(pio, dma+2) */
   2239 			if (drvp->PIO_mode <= (drvp->DMA_mode +2))
   2240 				mode = drvp->PIO_mode;
   2241 			else
   2242 				mode = drvp->DMA_mode + 2;
   2243 		}
   2244 		idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
   2245 
   2246 pio:		/* setup PIO mode */
   2247 		if (mode <= 2) {
   2248 			drvp->DMA_mode = 0;
   2249 			drvp->PIO_mode = 0;
   2250 			mode = 0;
   2251 		} else {
   2252 			drvp->PIO_mode = mode;
   2253 			drvp->DMA_mode = mode - 2;
   2254 		}
   2255 		datatim_reg |=
   2256 		    AMD7X6_DATATIM_PULSE(chp->channel, drive,
   2257 			amd7x6_pio_set[mode]) |
   2258 		    AMD7X6_DATATIM_RECOV(chp->channel, drive,
   2259 			amd7x6_pio_rec[mode]);
   2260 	}
   2261 	if (idedma_ctl != 0) {
   2262 		/* Add software bits in status register */
   2263 		bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   2264 		    IDEDMA_CTL + (IDEDMA_SCH_OFFSET * chp->channel),
   2265 		    idedma_ctl);
   2266 	}
   2267 	pci_conf_write(sc->sc_pc, sc->sc_tag, AMD7X6_DATATIM(sc), datatim_reg);
   2268 	pci_conf_write(sc->sc_pc, sc->sc_tag, AMD7X6_UDMA(sc), udmatim_reg);
   2269 }
   2270 
   2271 void
   2272 apollo_chip_map(sc, pa)
   2273 	struct pciide_softc *sc;
   2274 	struct pci_attach_args *pa;
   2275 {
   2276 	struct pciide_channel *cp;
   2277 	pcireg_t interface = PCI_INTERFACE(pa->pa_class);
   2278 	int channel;
   2279 	u_int32_t ideconf;
   2280 	bus_size_t cmdsize, ctlsize;
   2281 	pcitag_t pcib_tag;
   2282 	pcireg_t pcib_id, pcib_class;
   2283 
   2284 	if (pciide_chipen(sc, pa) == 0)
   2285 		return;
   2286 
   2287 	/* get a PCI tag for the ISA bridge (function 0 of the same device) */
   2288 	pcib_tag = pci_make_tag(pa->pa_pc, pa->pa_bus, pa->pa_device, 0);
   2289 	/* and read ID and rev of the ISA bridge */
   2290 	pcib_id = pci_conf_read(sc->sc_pc, pcib_tag, PCI_ID_REG);
   2291 	pcib_class = pci_conf_read(sc->sc_pc, pcib_tag, PCI_CLASS_REG);
   2292 	aprint_normal("%s: VIA Technologies ", sc->sc_wdcdev.sc_dev.dv_xname);
   2293 	switch (PCI_PRODUCT(pcib_id)) {
   2294 	case PCI_PRODUCT_VIATECH_VT82C586_ISA:
   2295 		aprint_normal("VT82C586 (Apollo VP) ");
   2296 		if(PCI_REVISION(pcib_class) >= 0x02) {
   2297 			aprint_normal("ATA33 controller\n");
   2298 			sc->sc_wdcdev.UDMA_cap = 2;
   2299 		} else {
   2300 			aprint_normal("controller\n");
   2301 			sc->sc_wdcdev.UDMA_cap = 0;
   2302 		}
   2303 		break;
   2304 	case PCI_PRODUCT_VIATECH_VT82C596A:
   2305 		aprint_normal("VT82C596A (Apollo Pro) ");
   2306 		if (PCI_REVISION(pcib_class) >= 0x12) {
   2307 			aprint_normal("ATA66 controller\n");
   2308 			sc->sc_wdcdev.UDMA_cap = 4;
   2309 		} else {
   2310 			aprint_normal("ATA33 controller\n");
   2311 			sc->sc_wdcdev.UDMA_cap = 2;
   2312 		}
   2313 		break;
   2314 	case PCI_PRODUCT_VIATECH_VT82C686A_ISA:
   2315 		aprint_normal("VT82C686A (Apollo KX133) ");
   2316 		if (PCI_REVISION(pcib_class) >= 0x40) {
   2317 			aprint_normal("ATA100 controller\n");
   2318 			sc->sc_wdcdev.UDMA_cap = 5;
   2319 		} else {
   2320 			aprint_normal("ATA66 controller\n");
   2321 			sc->sc_wdcdev.UDMA_cap = 4;
   2322 		}
   2323 		break;
   2324 	case PCI_PRODUCT_VIATECH_VT8231:
   2325 		aprint_normal("VT8231 ATA100 controller\n");
   2326 		sc->sc_wdcdev.UDMA_cap = 5;
   2327 		break;
   2328 	case PCI_PRODUCT_VIATECH_VT8233:
   2329 		aprint_normal("VT8233 ATA100 controller\n");
   2330 		sc->sc_wdcdev.UDMA_cap = 5;
   2331 		break;
   2332 	case PCI_PRODUCT_VIATECH_VT8233A:
   2333 		aprint_normal("VT8233A ATA133 controller\n");
   2334 		sc->sc_wdcdev.UDMA_cap = 6;
   2335 		break;
   2336 	case PCI_PRODUCT_VIATECH_VT8235:
   2337 		aprint_normal("VT8235 ATA133 controller\n");
   2338 		sc->sc_wdcdev.UDMA_cap = 6;
   2339 		break;
   2340 	case PCI_PRODUCT_VIATECH_VT8237_SATA:
   2341 		aprint_normal("VT8237 ATA133 controller\n");
   2342 		sc->sc_wdcdev.UDMA_cap = 6;
   2343 		break;
   2344 	default:
   2345 		aprint_normal("unknown ATA controller\n");
   2346 		sc->sc_wdcdev.UDMA_cap = 0;
   2347 	}
   2348 
   2349 	aprint_normal("%s: bus-master DMA support present",
   2350 	    sc->sc_wdcdev.sc_dev.dv_xname);
   2351 	pciide_mapreg_dma(sc, pa);
   2352 	aprint_normal("\n");
   2353 	sc->sc_wdcdev.cap = WDC_CAPABILITY_DATA16 | WDC_CAPABILITY_DATA32 |
   2354 	    WDC_CAPABILITY_MODE;
   2355 	if (sc->sc_dma_ok) {
   2356 		sc->sc_wdcdev.cap |= WDC_CAPABILITY_DMA | WDC_CAPABILITY_IRQACK;
   2357 		sc->sc_wdcdev.irqack = pciide_irqack;
   2358 		if (sc->sc_wdcdev.UDMA_cap > 0)
   2359 			sc->sc_wdcdev.cap |= WDC_CAPABILITY_UDMA;
   2360 	}
   2361 	sc->sc_wdcdev.PIO_cap = 4;
   2362 	sc->sc_wdcdev.DMA_cap = 2;
   2363 	sc->sc_wdcdev.set_modes = apollo_setup_channel;
   2364 	sc->sc_wdcdev.channels = sc->wdc_chanarray;
   2365 	sc->sc_wdcdev.nchannels = PCIIDE_NUM_CHANNELS;
   2366 
   2367 	WDCDEBUG_PRINT(("apollo_chip_map: old APO_IDECONF=0x%x, "
   2368 	    "APO_CTLMISC=0x%x, APO_DATATIM=0x%x, APO_UDMA=0x%x\n",
   2369 	    pci_conf_read(sc->sc_pc, sc->sc_tag, APO_IDECONF),
   2370 	    pci_conf_read(sc->sc_pc, sc->sc_tag, APO_CTLMISC),
   2371 	    pci_conf_read(sc->sc_pc, sc->sc_tag, APO_DATATIM),
   2372 	    pci_conf_read(sc->sc_pc, sc->sc_tag, APO_UDMA)),
   2373 	    DEBUG_PROBE);
   2374 
   2375 	for (channel = 0; channel < sc->sc_wdcdev.nchannels; channel++) {
   2376 		cp = &sc->pciide_channels[channel];
   2377 		if (pciide_chansetup(sc, channel, interface) == 0)
   2378 			continue;
   2379 
   2380 		ideconf = pci_conf_read(sc->sc_pc, sc->sc_tag, APO_IDECONF);
   2381 		if ((ideconf & APO_IDECONF_EN(channel)) == 0) {
   2382 			aprint_normal("%s: %s channel ignored (disabled)\n",
   2383 			    sc->sc_wdcdev.sc_dev.dv_xname, cp->name);
   2384 			cp->wdc_channel.ch_flags |= WDCF_DISABLED;
   2385 			continue;
   2386 		}
   2387 		pciide_mapchan(pa, cp, interface, &cmdsize, &ctlsize,
   2388 		    pciide_pci_intr);
   2389 	}
   2390 	WDCDEBUG_PRINT(("apollo_chip_map: APO_DATATIM=0x%x, APO_UDMA=0x%x\n",
   2391 	    pci_conf_read(sc->sc_pc, sc->sc_tag, APO_DATATIM),
   2392 	    pci_conf_read(sc->sc_pc, sc->sc_tag, APO_UDMA)), DEBUG_PROBE);
   2393 }
   2394 
   2395 void
   2396 apollo_setup_channel(chp)
   2397 	struct channel_softc *chp;
   2398 {
   2399 	u_int32_t udmatim_reg, datatim_reg;
   2400 	u_int8_t idedma_ctl;
   2401 	int mode, drive;
   2402 	struct ata_drive_datas *drvp;
   2403 	struct pciide_channel *cp = (struct pciide_channel*)chp;
   2404 	struct pciide_softc *sc = (struct pciide_softc *)cp->wdc_channel.wdc;
   2405 
   2406 	idedma_ctl = 0;
   2407 	datatim_reg = pci_conf_read(sc->sc_pc, sc->sc_tag, APO_DATATIM);
   2408 	udmatim_reg = pci_conf_read(sc->sc_pc, sc->sc_tag, APO_UDMA);
   2409 	datatim_reg &= ~APO_DATATIM_MASK(chp->channel);
   2410 	udmatim_reg &= ~APO_UDMA_MASK(chp->channel);
   2411 
   2412 	/* setup DMA if needed */
   2413 	pciide_channel_dma_setup(cp);
   2414 
   2415 	for (drive = 0; drive < 2; drive++) {
   2416 		drvp = &chp->ch_drive[drive];
   2417 		/* If no drive, skip */
   2418 		if ((drvp->drive_flags & DRIVE) == 0)
   2419 			continue;
   2420 		/* add timing values, setup DMA if needed */
   2421 		if (((drvp->drive_flags & DRIVE_DMA) == 0 &&
   2422 		    (drvp->drive_flags & DRIVE_UDMA) == 0)) {
   2423 			mode = drvp->PIO_mode;
   2424 			goto pio;
   2425 		}
   2426 		if ((chp->wdc->cap & WDC_CAPABILITY_UDMA) &&
   2427 		    (drvp->drive_flags & DRIVE_UDMA)) {
   2428 			/* use Ultra/DMA */
   2429 			drvp->drive_flags &= ~DRIVE_DMA;
   2430 			udmatim_reg |= APO_UDMA_EN(chp->channel, drive) |
   2431 			    APO_UDMA_EN_MTH(chp->channel, drive);
   2432 			if (sc->sc_wdcdev.UDMA_cap == 6) {
   2433 				/* 8233a */
   2434 				udmatim_reg |= APO_UDMA_TIME(chp->channel,
   2435 				    drive, apollo_udma133_tim[drvp->UDMA_mode]);
   2436 			} else if (sc->sc_wdcdev.UDMA_cap == 5) {
   2437 				/* 686b */
   2438 				udmatim_reg |= APO_UDMA_TIME(chp->channel,
   2439 				    drive, apollo_udma100_tim[drvp->UDMA_mode]);
   2440 			} else if (sc->sc_wdcdev.UDMA_cap == 4) {
   2441 				/* 596b or 686a */
   2442 				udmatim_reg |= APO_UDMA_CLK66(chp->channel);
   2443 				udmatim_reg |= APO_UDMA_TIME(chp->channel,
   2444 				    drive, apollo_udma66_tim[drvp->UDMA_mode]);
   2445 			} else {
   2446 				/* 596a or 586b */
   2447 				udmatim_reg |= APO_UDMA_TIME(chp->channel,
   2448 				    drive, apollo_udma33_tim[drvp->UDMA_mode]);
   2449 			}
   2450 			/* can use PIO timings, MW DMA unused */
   2451 			mode = drvp->PIO_mode;
   2452 		} else {
   2453 			/* use Multiword DMA */
   2454 			drvp->drive_flags &= ~DRIVE_UDMA;
   2455 			/* mode = min(pio, dma+2) */
   2456 			if (drvp->PIO_mode <= (drvp->DMA_mode +2))
   2457 				mode = drvp->PIO_mode;
   2458 			else
   2459 				mode = drvp->DMA_mode + 2;
   2460 		}
   2461 		idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
   2462 
   2463 pio:		/* setup PIO mode */
   2464 		if (mode <= 2) {
   2465 			drvp->DMA_mode = 0;
   2466 			drvp->PIO_mode = 0;
   2467 			mode = 0;
   2468 		} else {
   2469 			drvp->PIO_mode = mode;
   2470 			drvp->DMA_mode = mode - 2;
   2471 		}
   2472 		datatim_reg |=
   2473 		    APO_DATATIM_PULSE(chp->channel, drive,
   2474 			apollo_pio_set[mode]) |
   2475 		    APO_DATATIM_RECOV(chp->channel, drive,
   2476 			apollo_pio_rec[mode]);
   2477 	}
   2478 	if (idedma_ctl != 0) {
   2479 		/* Add software bits in status register */
   2480 		bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   2481 		    IDEDMA_CTL + (IDEDMA_SCH_OFFSET * chp->channel),
   2482 		    idedma_ctl);
   2483 	}
   2484 	pci_conf_write(sc->sc_pc, sc->sc_tag, APO_DATATIM, datatim_reg);
   2485 	pci_conf_write(sc->sc_pc, sc->sc_tag, APO_UDMA, udmatim_reg);
   2486 }
   2487 
   2488 void
   2489 apollo_sata_chip_map(sc, pa)
   2490 	struct pciide_softc *sc;
   2491 	struct pci_attach_args *pa;
   2492 {
   2493 	struct pciide_channel *cp;
   2494 	pcireg_t interface = PCI_INTERFACE(pa->pa_class);
   2495 	int channel;
   2496 	bus_size_t cmdsize, ctlsize;
   2497 
   2498 	if (pciide_chipen(sc, pa) == 0)
   2499 		return;
   2500 
   2501 	if ( interface == 0 ) {
   2502 		WDCDEBUG_PRINT(("apollo_sata_chip_map interface == 0\n"),
   2503 			       DEBUG_PROBE);
   2504 		interface = PCIIDE_INTERFACE_BUS_MASTER_DMA |
   2505 			PCIIDE_INTERFACE_PCI(0) | PCIIDE_INTERFACE_PCI(1);
   2506 	}
   2507 
   2508 	aprint_normal("%s: bus-master DMA support present",
   2509 		      sc->sc_wdcdev.sc_dev.dv_xname);
   2510 	pciide_mapreg_dma(sc, pa);
   2511 	aprint_normal("\n");
   2512 
   2513 	if (sc->sc_dma_ok) {
   2514 		sc->sc_wdcdev.cap |= WDC_CAPABILITY_UDMA | WDC_CAPABILITY_DMA | WDC_CAPABILITY_IRQACK;
   2515 		sc->sc_wdcdev.irqack = pciide_irqack;
   2516 	}
   2517 	sc->sc_wdcdev.PIO_cap = 4;
   2518 	sc->sc_wdcdev.DMA_cap = 2;
   2519 	sc->sc_wdcdev.UDMA_cap = 6;
   2520 
   2521 	sc->sc_wdcdev.channels = sc->wdc_chanarray;
   2522 	sc->sc_wdcdev.nchannels = PCIIDE_NUM_CHANNELS;
   2523 	sc->sc_wdcdev.cap |= WDC_CAPABILITY_DATA16 | WDC_CAPABILITY_DATA32 |
   2524 		WDC_CAPABILITY_MODE;
   2525 	sc->sc_wdcdev.set_modes = sata_setup_channel;
   2526 
   2527 	for (channel = 0; channel < sc->sc_wdcdev.nchannels; channel++) {
   2528 		cp = &sc->pciide_channels[channel];
   2529 		if (pciide_chansetup(sc, channel, interface) == 0)
   2530 			continue;
   2531 		pciide_mapchan(pa, cp, interface, &cmdsize, &ctlsize,
   2532 		     pciide_pci_intr);
   2533 	}
   2534 }
   2535 
   2536 void
   2537 cmd_channel_map(pa, sc, channel)
   2538 	struct pci_attach_args *pa;
   2539 	struct pciide_softc *sc;
   2540 	int channel;
   2541 {
   2542 	struct pciide_channel *cp = &sc->pciide_channels[channel];
   2543 	bus_size_t cmdsize, ctlsize;
   2544 	u_int8_t ctrl = pciide_pci_read(sc->sc_pc, sc->sc_tag, CMD_CTRL);
   2545 	int interface, one_channel;
   2546 
   2547 	/*
   2548 	 * The 0648/0649 can be told to identify as a RAID controller.
   2549 	 * In this case, we have to fake interface
   2550 	 */
   2551 	if (PCI_SUBCLASS(pa->pa_class) != PCI_SUBCLASS_MASS_STORAGE_IDE) {
   2552 		interface = PCIIDE_INTERFACE_SETTABLE(0) |
   2553 		    PCIIDE_INTERFACE_SETTABLE(1);
   2554 		if (pciide_pci_read(pa->pa_pc, pa->pa_tag, CMD_CONF) &
   2555 		    CMD_CONF_DSA1)
   2556 			interface |= PCIIDE_INTERFACE_PCI(0) |
   2557 			    PCIIDE_INTERFACE_PCI(1);
   2558 	} else {
   2559 		interface = PCI_INTERFACE(pa->pa_class);
   2560 	}
   2561 
   2562 	sc->wdc_chanarray[channel] = &cp->wdc_channel;
   2563 	cp->name = PCIIDE_CHANNEL_NAME(channel);
   2564 	cp->wdc_channel.channel = channel;
   2565 	cp->wdc_channel.wdc = &sc->sc_wdcdev;
   2566 
   2567 	/*
   2568 	 * Older CMD64X doesn't have independant channels
   2569 	 */
   2570 	switch (sc->sc_pp->ide_product) {
   2571 	case PCI_PRODUCT_CMDTECH_649:
   2572 		one_channel = 0;
   2573 		break;
   2574 	default:
   2575 		one_channel = 1;
   2576 		break;
   2577 	}
   2578 
   2579 	if (channel > 0 && one_channel) {
   2580 		cp->wdc_channel.ch_queue =
   2581 		    sc->pciide_channels[0].wdc_channel.ch_queue;
   2582 	} else {
   2583 		cp->wdc_channel.ch_queue =
   2584 		    malloc(sizeof(struct channel_queue), M_DEVBUF, M_NOWAIT);
   2585 	}
   2586 	if (cp->wdc_channel.ch_queue == NULL) {
   2587 		aprint_error("%s %s channel: "
   2588 		    "can't allocate memory for command queue",
   2589 		    sc->sc_wdcdev.sc_dev.dv_xname, cp->name);
   2590 		    return;
   2591 	}
   2592 
   2593 	aprint_normal("%s: %s channel %s to %s mode\n",
   2594 	    sc->sc_wdcdev.sc_dev.dv_xname, cp->name,
   2595 	    (interface & PCIIDE_INTERFACE_SETTABLE(channel)) ?
   2596 	    "configured" : "wired",
   2597 	    (interface & PCIIDE_INTERFACE_PCI(channel)) ?
   2598 	    "native-PCI" : "compatibility");
   2599 
   2600 	/*
   2601 	 * with a CMD PCI64x, if we get here, the first channel is enabled:
   2602 	 * there's no way to disable the first channel without disabling
   2603 	 * the whole device
   2604 	 */
   2605 	if (channel != 0 && (ctrl & CMD_CTRL_2PORT) == 0) {
   2606 		aprint_normal("%s: %s channel ignored (disabled)\n",
   2607 		    sc->sc_wdcdev.sc_dev.dv_xname, cp->name);
   2608 		cp->wdc_channel.ch_flags |= WDCF_DISABLED;
   2609 		return;
   2610 	}
   2611 
   2612 	pciide_mapchan(pa, cp, interface, &cmdsize, &ctlsize, cmd_pci_intr);
   2613 }
   2614 
   2615 int
   2616 cmd_pci_intr(arg)
   2617 	void *arg;
   2618 {
   2619 	struct pciide_softc *sc = arg;
   2620 	struct pciide_channel *cp;
   2621 	struct channel_softc *wdc_cp;
   2622 	int i, rv, crv;
   2623 	u_int32_t priirq, secirq;
   2624 
   2625 	rv = 0;
   2626 	priirq = pciide_pci_read(sc->sc_pc, sc->sc_tag, CMD_CONF);
   2627 	secirq = pciide_pci_read(sc->sc_pc, sc->sc_tag, CMD_ARTTIM23);
   2628 	for (i = 0; i < sc->sc_wdcdev.nchannels; i++) {
   2629 		cp = &sc->pciide_channels[i];
   2630 		wdc_cp = &cp->wdc_channel;
   2631 		/* If a compat channel skip. */
   2632 		if (cp->compat)
   2633 			continue;
   2634 		if ((i == 0 && (priirq & CMD_CONF_DRV0_INTR)) ||
   2635 		    (i == 1 && (secirq & CMD_ARTTIM23_IRQ))) {
   2636 			crv = wdcintr(wdc_cp);
   2637 			if (crv == 0)
   2638 				printf("%s:%d: bogus intr\n",
   2639 				    sc->sc_wdcdev.sc_dev.dv_xname, i);
   2640 			else
   2641 				rv = 1;
   2642 		}
   2643 	}
   2644 	return rv;
   2645 }
   2646 
   2647 void
   2648 cmd_chip_map(sc, pa)
   2649 	struct pciide_softc *sc;
   2650 	struct pci_attach_args *pa;
   2651 {
   2652 	int channel;
   2653 
   2654 	/*
   2655 	 * For a CMD PCI064x, the use of PCI_COMMAND_IO_ENABLE
   2656 	 * and base adresses registers can be disabled at
   2657 	 * hardware level. In this case, the device is wired
   2658 	 * in compat mode and its first channel is always enabled,
   2659 	 * but we can't rely on PCI_COMMAND_IO_ENABLE.
   2660 	 * In fact, it seems that the first channel of the CMD PCI0640
   2661 	 * can't be disabled.
   2662 	 */
   2663 
   2664 #ifdef PCIIDE_CMD064x_DISABLE
   2665 	if (pciide_chipen(sc, pa) == 0)
   2666 		return;
   2667 #endif
   2668 
   2669 	aprint_normal("%s: hardware does not support DMA\n",
   2670 	    sc->sc_wdcdev.sc_dev.dv_xname);
   2671 	sc->sc_dma_ok = 0;
   2672 
   2673 	sc->sc_wdcdev.channels = sc->wdc_chanarray;
   2674 	sc->sc_wdcdev.nchannels = PCIIDE_NUM_CHANNELS;
   2675 	sc->sc_wdcdev.cap = WDC_CAPABILITY_DATA16;
   2676 
   2677 	for (channel = 0; channel < sc->sc_wdcdev.nchannels; channel++) {
   2678 		cmd_channel_map(pa, sc, channel);
   2679 	}
   2680 }
   2681 
   2682 void
   2683 cmd0643_9_chip_map(sc, pa)
   2684 	struct pciide_softc *sc;
   2685 	struct pci_attach_args *pa;
   2686 {
   2687 	struct pciide_channel *cp;
   2688 	int channel;
   2689 	pcireg_t rev = PCI_REVISION(pa->pa_class);
   2690 
   2691 	/*
   2692 	 * For a CMD PCI064x, the use of PCI_COMMAND_IO_ENABLE
   2693 	 * and base adresses registers can be disabled at
   2694 	 * hardware level. In this case, the device is wired
   2695 	 * in compat mode and its first channel is always enabled,
   2696 	 * but we can't rely on PCI_COMMAND_IO_ENABLE.
   2697 	 * In fact, it seems that the first channel of the CMD PCI0640
   2698 	 * can't be disabled.
   2699 	 */
   2700 
   2701 #ifdef PCIIDE_CMD064x_DISABLE
   2702 	if (pciide_chipen(sc, pa) == 0)
   2703 		return;
   2704 #endif
   2705 
   2706 	aprint_normal("%s: bus-master DMA support present",
   2707 	    sc->sc_wdcdev.sc_dev.dv_xname);
   2708 	pciide_mapreg_dma(sc, pa);
   2709 	aprint_normal("\n");
   2710 	sc->sc_wdcdev.cap = WDC_CAPABILITY_DATA16 | WDC_CAPABILITY_DATA32 |
   2711 	    WDC_CAPABILITY_MODE;
   2712 	if (sc->sc_dma_ok) {
   2713 		sc->sc_wdcdev.cap |= WDC_CAPABILITY_DMA | WDC_CAPABILITY_IRQACK;
   2714 		switch (sc->sc_pp->ide_product) {
   2715 		case PCI_PRODUCT_CMDTECH_649:
   2716 			sc->sc_wdcdev.cap |= WDC_CAPABILITY_UDMA;
   2717 			sc->sc_wdcdev.UDMA_cap = 5;
   2718 			sc->sc_wdcdev.irqack = cmd646_9_irqack;
   2719 			break;
   2720 		case PCI_PRODUCT_CMDTECH_648:
   2721 			sc->sc_wdcdev.cap |= WDC_CAPABILITY_UDMA;
   2722 			sc->sc_wdcdev.UDMA_cap = 4;
   2723 			sc->sc_wdcdev.irqack = cmd646_9_irqack;
   2724 			break;
   2725 		case PCI_PRODUCT_CMDTECH_646:
   2726 			if (rev >= CMD0646U2_REV) {
   2727 				sc->sc_wdcdev.cap |= WDC_CAPABILITY_UDMA;
   2728 				sc->sc_wdcdev.UDMA_cap = 2;
   2729 			} else if (rev >= CMD0646U_REV) {
   2730 			/*
   2731 			 * Linux's driver claims that the 646U is broken
   2732 			 * with UDMA. Only enable it if we know what we're
   2733 			 * doing
   2734 			 */
   2735 #ifdef PCIIDE_CMD0646U_ENABLEUDMA
   2736 				sc->sc_wdcdev.cap |= WDC_CAPABILITY_UDMA;
   2737 				sc->sc_wdcdev.UDMA_cap = 2;
   2738 #endif
   2739 				/* explicitly disable UDMA */
   2740 				pciide_pci_write(sc->sc_pc, sc->sc_tag,
   2741 				    CMD_UDMATIM(0), 0);
   2742 				pciide_pci_write(sc->sc_pc, sc->sc_tag,
   2743 				    CMD_UDMATIM(1), 0);
   2744 			}
   2745 			sc->sc_wdcdev.irqack = cmd646_9_irqack;
   2746 			break;
   2747 		default:
   2748 			sc->sc_wdcdev.irqack = pciide_irqack;
   2749 		}
   2750 	}
   2751 
   2752 	sc->sc_wdcdev.channels = sc->wdc_chanarray;
   2753 	sc->sc_wdcdev.nchannels = PCIIDE_NUM_CHANNELS;
   2754 	sc->sc_wdcdev.PIO_cap = 4;
   2755 	sc->sc_wdcdev.DMA_cap = 2;
   2756 	sc->sc_wdcdev.set_modes = cmd0643_9_setup_channel;
   2757 
   2758 	WDCDEBUG_PRINT(("cmd0643_9_chip_map: old timings reg 0x%x 0x%x\n",
   2759 		pci_conf_read(sc->sc_pc, sc->sc_tag, 0x54),
   2760 		pci_conf_read(sc->sc_pc, sc->sc_tag, 0x58)),
   2761 		DEBUG_PROBE);
   2762 
   2763 	for (channel = 0; channel < sc->sc_wdcdev.nchannels; channel++) {
   2764 		cp = &sc->pciide_channels[channel];
   2765 		cmd_channel_map(pa, sc, channel);
   2766 	}
   2767 	/*
   2768 	 * note - this also makes sure we clear the irq disable and reset
   2769 	 * bits
   2770 	 */
   2771 	pciide_pci_write(sc->sc_pc, sc->sc_tag, CMD_DMA_MODE, CMD_DMA_MULTIPLE);
   2772 	WDCDEBUG_PRINT(("cmd0643_9_chip_map: timings reg now 0x%x 0x%x\n",
   2773 	    pci_conf_read(sc->sc_pc, sc->sc_tag, 0x54),
   2774 	    pci_conf_read(sc->sc_pc, sc->sc_tag, 0x58)),
   2775 	    DEBUG_PROBE);
   2776 }
   2777 
   2778 void
   2779 cmd0643_9_setup_channel(chp)
   2780 	struct channel_softc *chp;
   2781 {
   2782 	struct ata_drive_datas *drvp;
   2783 	u_int8_t tim;
   2784 	u_int32_t idedma_ctl, udma_reg;
   2785 	int drive;
   2786 	struct pciide_channel *cp = (struct pciide_channel*)chp;
   2787 	struct pciide_softc *sc = (struct pciide_softc *)cp->wdc_channel.wdc;
   2788 
   2789 	idedma_ctl = 0;
   2790 	/* setup DMA if needed */
   2791 	pciide_channel_dma_setup(cp);
   2792 
   2793 	for (drive = 0; drive < 2; drive++) {
   2794 		drvp = &chp->ch_drive[drive];
   2795 		/* If no drive, skip */
   2796 		if ((drvp->drive_flags & DRIVE) == 0)
   2797 			continue;
   2798 		/* add timing values, setup DMA if needed */
   2799 		tim = cmd0643_9_data_tim_pio[drvp->PIO_mode];
   2800 		if (drvp->drive_flags & (DRIVE_DMA | DRIVE_UDMA)) {
   2801 			if (drvp->drive_flags & DRIVE_UDMA) {
   2802 				/* UltraDMA on a 646U2, 0648 or 0649 */
   2803 				drvp->drive_flags &= ~DRIVE_DMA;
   2804 				udma_reg = pciide_pci_read(sc->sc_pc,
   2805 				    sc->sc_tag, CMD_UDMATIM(chp->channel));
   2806 				if (drvp->UDMA_mode > 2 &&
   2807 				    (pciide_pci_read(sc->sc_pc, sc->sc_tag,
   2808 				    CMD_BICSR) &
   2809 				    CMD_BICSR_80(chp->channel)) == 0)
   2810 					drvp->UDMA_mode = 2;
   2811 				if (drvp->UDMA_mode > 2)
   2812 					udma_reg &= ~CMD_UDMATIM_UDMA33(drive);
   2813 				else if (sc->sc_wdcdev.UDMA_cap > 2)
   2814 					udma_reg |= CMD_UDMATIM_UDMA33(drive);
   2815 				udma_reg |= CMD_UDMATIM_UDMA(drive);
   2816 				udma_reg &= ~(CMD_UDMATIM_TIM_MASK <<
   2817 				    CMD_UDMATIM_TIM_OFF(drive));
   2818 				udma_reg |=
   2819 				    (cmd0646_9_tim_udma[drvp->UDMA_mode] <<
   2820 				    CMD_UDMATIM_TIM_OFF(drive));
   2821 				pciide_pci_write(sc->sc_pc, sc->sc_tag,
   2822 				    CMD_UDMATIM(chp->channel), udma_reg);
   2823 			} else {
   2824 				/*
   2825 				 * use Multiword DMA.
   2826 				 * Timings will be used for both PIO and DMA,
   2827 				 * so adjust DMA mode if needed
   2828 				 * if we have a 0646U2/8/9, turn off UDMA
   2829 				 */
   2830 				if (sc->sc_wdcdev.cap & WDC_CAPABILITY_UDMA) {
   2831 					udma_reg = pciide_pci_read(sc->sc_pc,
   2832 					    sc->sc_tag,
   2833 					    CMD_UDMATIM(chp->channel));
   2834 					udma_reg &= ~CMD_UDMATIM_UDMA(drive);
   2835 					pciide_pci_write(sc->sc_pc, sc->sc_tag,
   2836 					    CMD_UDMATIM(chp->channel),
   2837 					    udma_reg);
   2838 				}
   2839 				if (drvp->PIO_mode >= 3 &&
   2840 				    (drvp->DMA_mode + 2) > drvp->PIO_mode) {
   2841 					drvp->DMA_mode = drvp->PIO_mode - 2;
   2842 				}
   2843 				tim = cmd0643_9_data_tim_dma[drvp->DMA_mode];
   2844 			}
   2845 			idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
   2846 		}
   2847 		pciide_pci_write(sc->sc_pc, sc->sc_tag,
   2848 		    CMD_DATA_TIM(chp->channel, drive), tim);
   2849 	}
   2850 	if (idedma_ctl != 0) {
   2851 		/* Add software bits in status register */
   2852 		bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   2853 		    IDEDMA_CTL + (IDEDMA_SCH_OFFSET * chp->channel),
   2854 		    idedma_ctl);
   2855 	}
   2856 }
   2857 
   2858 void
   2859 cmd646_9_irqack(chp)
   2860 	struct channel_softc *chp;
   2861 {
   2862 	u_int32_t priirq, secirq;
   2863 	struct pciide_channel *cp = (struct pciide_channel*)chp;
   2864 	struct pciide_softc *sc = (struct pciide_softc *)cp->wdc_channel.wdc;
   2865 
   2866 	if (chp->channel == 0) {
   2867 		priirq = pciide_pci_read(sc->sc_pc, sc->sc_tag, CMD_CONF);
   2868 		pciide_pci_write(sc->sc_pc, sc->sc_tag, CMD_CONF, priirq);
   2869 	} else {
   2870 		secirq = pciide_pci_read(sc->sc_pc, sc->sc_tag, CMD_ARTTIM23);
   2871 		pciide_pci_write(sc->sc_pc, sc->sc_tag, CMD_ARTTIM23, secirq);
   2872 	}
   2873 	pciide_irqack(chp);
   2874 }
   2875 
   2876 void
   2877 cmd680_chip_map(sc, pa)
   2878 	struct pciide_softc *sc;
   2879 	struct pci_attach_args *pa;
   2880 {
   2881 	struct pciide_channel *cp;
   2882 	int channel;
   2883 
   2884 	if (pciide_chipen(sc, pa) == 0)
   2885 		return;
   2886 
   2887 	aprint_normal("%s: bus-master DMA support present",
   2888 	    sc->sc_wdcdev.sc_dev.dv_xname);
   2889 	pciide_mapreg_dma(sc, pa);
   2890 	aprint_normal("\n");
   2891 	sc->sc_wdcdev.cap = WDC_CAPABILITY_DATA16 | WDC_CAPABILITY_DATA32 |
   2892 	    WDC_CAPABILITY_MODE;
   2893 	if (sc->sc_dma_ok) {
   2894 		sc->sc_wdcdev.cap |= WDC_CAPABILITY_DMA | WDC_CAPABILITY_IRQACK;
   2895 		sc->sc_wdcdev.cap |= WDC_CAPABILITY_UDMA;
   2896 		sc->sc_wdcdev.UDMA_cap = 6;
   2897 		sc->sc_wdcdev.irqack = pciide_irqack;
   2898 	}
   2899 
   2900 	sc->sc_wdcdev.channels = sc->wdc_chanarray;
   2901 	sc->sc_wdcdev.nchannels = PCIIDE_NUM_CHANNELS;
   2902 	sc->sc_wdcdev.PIO_cap = 4;
   2903 	sc->sc_wdcdev.DMA_cap = 2;
   2904 	sc->sc_wdcdev.set_modes = cmd680_setup_channel;
   2905 
   2906 	pciide_pci_write(sc->sc_pc, sc->sc_tag, 0x80, 0x00);
   2907 	pciide_pci_write(sc->sc_pc, sc->sc_tag, 0x84, 0x00);
   2908 	pciide_pci_write(sc->sc_pc, sc->sc_tag, 0x8a,
   2909 	    pciide_pci_read(sc->sc_pc, sc->sc_tag, 0x8a) | 0x01);
   2910 	for (channel = 0; channel < sc->sc_wdcdev.nchannels; channel++) {
   2911 		cp = &sc->pciide_channels[channel];
   2912 		cmd680_channel_map(pa, sc, channel);
   2913 	}
   2914 }
   2915 
   2916 void
   2917 cmd680_channel_map(pa, sc, channel)
   2918 	struct pci_attach_args *pa;
   2919 	struct pciide_softc *sc;
   2920 	int channel;
   2921 {
   2922 	struct pciide_channel *cp = &sc->pciide_channels[channel];
   2923 	bus_size_t cmdsize, ctlsize;
   2924 	int interface, i, reg;
   2925 	static const u_int8_t init_val[] =
   2926 	    {             0x8a, 0x32, 0x8a, 0x32, 0x8a, 0x32,
   2927 	      0x92, 0x43, 0x92, 0x43, 0x09, 0x40, 0x09, 0x40 };
   2928 
   2929 	if (PCI_SUBCLASS(pa->pa_class) != PCI_SUBCLASS_MASS_STORAGE_IDE) {
   2930 		interface = PCIIDE_INTERFACE_SETTABLE(0) |
   2931 		    PCIIDE_INTERFACE_SETTABLE(1);
   2932 		interface |= PCIIDE_INTERFACE_PCI(0) |
   2933 		    PCIIDE_INTERFACE_PCI(1);
   2934 	} else {
   2935 		interface = PCI_INTERFACE(pa->pa_class);
   2936 	}
   2937 
   2938 	sc->wdc_chanarray[channel] = &cp->wdc_channel;
   2939 	cp->name = PCIIDE_CHANNEL_NAME(channel);
   2940 	cp->wdc_channel.channel = channel;
   2941 	cp->wdc_channel.wdc = &sc->sc_wdcdev;
   2942 
   2943 	cp->wdc_channel.ch_queue =
   2944 	    malloc(sizeof(struct channel_queue), M_DEVBUF, M_NOWAIT);
   2945 	if (cp->wdc_channel.ch_queue == NULL) {
   2946 		aprint_error("%s %s channel: "
   2947 		    "can't allocate memory for command queue",
   2948 		    sc->sc_wdcdev.sc_dev.dv_xname, cp->name);
   2949 		    return;
   2950 	}
   2951 
   2952 	/* XXX */
   2953 	reg = 0xa2 + channel * 16;
   2954 	for (i = 0; i < sizeof(init_val); i++)
   2955 		pciide_pci_write(sc->sc_pc, sc->sc_tag, reg + i, init_val[i]);
   2956 
   2957 	aprint_normal("%s: %s channel %s to %s mode\n",
   2958 	    sc->sc_wdcdev.sc_dev.dv_xname, cp->name,
   2959 	    (interface & PCIIDE_INTERFACE_SETTABLE(channel)) ?
   2960 	    "configured" : "wired",
   2961 	    (interface & PCIIDE_INTERFACE_PCI(channel)) ?
   2962 	    "native-PCI" : "compatibility");
   2963 
   2964 	pciide_mapchan(pa, cp, interface, &cmdsize, &ctlsize, pciide_pci_intr);
   2965 }
   2966 
   2967 void
   2968 cmd680_setup_channel(chp)
   2969 	struct channel_softc *chp;
   2970 {
   2971 	struct ata_drive_datas *drvp;
   2972 	u_int8_t mode, off, scsc;
   2973 	u_int16_t val;
   2974 	u_int32_t idedma_ctl;
   2975 	int drive;
   2976 	struct pciide_channel *cp = (struct pciide_channel*)chp;
   2977 	struct pciide_softc *sc = (struct pciide_softc *)cp->wdc_channel.wdc;
   2978 	pci_chipset_tag_t pc = sc->sc_pc;
   2979 	pcitag_t pa = sc->sc_tag;
   2980 	static const u_int8_t udma2_tbl[] =
   2981 	    { 0x0f, 0x0b, 0x07, 0x06, 0x03, 0x02, 0x01 };
   2982 	static const u_int8_t udma_tbl[] =
   2983 	    { 0x0c, 0x07, 0x05, 0x04, 0x02, 0x01, 0x00 };
   2984 	static const u_int16_t dma_tbl[] =
   2985 	    { 0x2208, 0x10c2, 0x10c1 };
   2986 	static const u_int16_t pio_tbl[] =
   2987 	    { 0x328a, 0x2283, 0x1104, 0x10c3, 0x10c1 };
   2988 
   2989 	idedma_ctl = 0;
   2990 	pciide_channel_dma_setup(cp);
   2991 	mode = pciide_pci_read(pc, pa, 0x80 + chp->channel * 4);
   2992 
   2993 	for (drive = 0; drive < 2; drive++) {
   2994 		drvp = &chp->ch_drive[drive];
   2995 		/* If no drive, skip */
   2996 		if ((drvp->drive_flags & DRIVE) == 0)
   2997 			continue;
   2998 		mode &= ~(0x03 << (drive * 4));
   2999 		if (drvp->drive_flags & DRIVE_UDMA) {
   3000 			drvp->drive_flags &= ~DRIVE_DMA;
   3001 			off = 0xa0 + chp->channel * 16;
   3002 			if (drvp->UDMA_mode > 2 &&
   3003 			    (pciide_pci_read(pc, pa, off) & 0x01) == 0)
   3004 				drvp->UDMA_mode = 2;
   3005 			scsc = pciide_pci_read(pc, pa, 0x8a);
   3006 			if (drvp->UDMA_mode == 6 && (scsc & 0x30) == 0) {
   3007 				pciide_pci_write(pc, pa, 0x8a, scsc | 0x01);
   3008 				scsc = pciide_pci_read(pc, pa, 0x8a);
   3009 				if ((scsc & 0x30) == 0)
   3010 					drvp->UDMA_mode = 5;
   3011 			}
   3012 			mode |= 0x03 << (drive * 4);
   3013 			off = 0xac + chp->channel * 16 + drive * 2;
   3014 			val = pciide_pci_read(pc, pa, off) & ~0x3f;
   3015 			if (scsc & 0x30)
   3016 				val |= udma2_tbl[drvp->UDMA_mode];
   3017 			else
   3018 				val |= udma_tbl[drvp->UDMA_mode];
   3019 			pciide_pci_write(pc, pa, off, val);
   3020 			idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
   3021 		} else if (drvp->drive_flags & DRIVE_DMA) {
   3022 			mode |= 0x02 << (drive * 4);
   3023 			off = 0xa8 + chp->channel * 16 + drive * 2;
   3024 			val = dma_tbl[drvp->DMA_mode];
   3025 			pciide_pci_write(pc, pa, off, val & 0xff);
   3026 			pciide_pci_write(pc, pa, off, val >> 8);
   3027 			idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
   3028 		} else {
   3029 			mode |= 0x01 << (drive * 4);
   3030 			off = 0xa4 + chp->channel * 16 + drive * 2;
   3031 			val = pio_tbl[drvp->PIO_mode];
   3032 			pciide_pci_write(pc, pa, off, val & 0xff);
   3033 			pciide_pci_write(pc, pa, off, val >> 8);
   3034 		}
   3035 	}
   3036 
   3037 	pciide_pci_write(pc, pa, 0x80 + chp->channel * 4, mode);
   3038 	if (idedma_ctl != 0) {
   3039 		/* Add software bits in status register */
   3040 		bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   3041 		    IDEDMA_CTL + (IDEDMA_SCH_OFFSET * chp->channel),
   3042 		    idedma_ctl);
   3043 	}
   3044 }
   3045 
   3046 void
   3047 cmd3112_chip_map(sc, pa)
   3048 	struct pciide_softc *sc;
   3049 	struct pci_attach_args *pa;
   3050 {
   3051 	struct pciide_channel *cp;
   3052 	bus_size_t cmdsize, ctlsize;
   3053 	pcireg_t interface;
   3054 	int channel;
   3055 
   3056 	if (pciide_chipen(sc, pa) == 0)
   3057 		return;
   3058 
   3059 	aprint_normal("%s: bus-master DMA support present",
   3060 	    sc->sc_wdcdev.sc_dev.dv_xname);
   3061 	pciide_mapreg_dma(sc, pa);
   3062 	aprint_normal("\n");
   3063 
   3064 	/*
   3065 	 * Rev. <= 0x01 of the 3112 have a bug that can cause data
   3066 	 * corruption if DMA transfers cross an 8K boundary.  This is
   3067 	 * apparently hard to tickle, but we'll go ahead and play it
   3068 	 * safe.
   3069 	 */
   3070 	if (PCI_REVISION(pa->pa_class) <= 0x01) {
   3071 		sc->sc_dma_maxsegsz = 8192;
   3072 		sc->sc_dma_boundary = 8192;
   3073 	}
   3074 
   3075 	sc->sc_wdcdev.cap |= WDC_CAPABILITY_DATA16 | WDC_CAPABILITY_DATA32 |
   3076 	    WDC_CAPABILITY_MODE;
   3077 	sc->sc_wdcdev.PIO_cap = 4;
   3078 	if (sc->sc_dma_ok) {
   3079 		sc->sc_wdcdev.cap |= WDC_CAPABILITY_DMA | WDC_CAPABILITY_UDMA;
   3080 		sc->sc_wdcdev.cap |= WDC_CAPABILITY_IRQACK;
   3081 		sc->sc_wdcdev.irqack = pciide_irqack;
   3082 		sc->sc_wdcdev.DMA_cap = 2;
   3083 		sc->sc_wdcdev.UDMA_cap = 6;
   3084 	}
   3085 	sc->sc_wdcdev.set_modes = cmd3112_setup_channel;
   3086 
   3087 	sc->sc_wdcdev.channels = sc->wdc_chanarray;
   3088 	sc->sc_wdcdev.nchannels = PCIIDE_NUM_CHANNELS;
   3089 
   3090 	/*
   3091 	 * The 3112 can be told to identify as a RAID controller.
   3092 	 * In this case, we have to fake interface
   3093 	 */
   3094 	if (PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_MASS_STORAGE_IDE) {
   3095 		interface = PCI_INTERFACE(pa->pa_class);
   3096 	} else {
   3097 		interface = PCIIDE_INTERFACE_BUS_MASTER_DMA |
   3098 		    PCIIDE_INTERFACE_PCI(0) | PCIIDE_INTERFACE_PCI(1);
   3099 	}
   3100 
   3101 	for (channel = 0; channel < sc->sc_wdcdev.nchannels; channel++) {
   3102 		cp = &sc->pciide_channels[channel];
   3103 		if (pciide_chansetup(sc, channel, interface) == 0)
   3104 			continue;
   3105 		pciide_mapchan(pa, cp, interface, &cmdsize, &ctlsize,
   3106 		    pciide_pci_intr);
   3107 	}
   3108 }
   3109 
   3110 void
   3111 cmd3112_setup_channel(chp)
   3112 	struct channel_softc *chp;
   3113 {
   3114 	struct ata_drive_datas *drvp;
   3115 	int drive;
   3116 	u_int32_t idedma_ctl, dtm;
   3117 	struct pciide_channel *cp = (struct pciide_channel*)chp;
   3118 	struct pciide_softc *sc = (struct pciide_softc*)cp->wdc_channel.wdc;
   3119 
   3120 	/* setup DMA if needed */
   3121 	pciide_channel_dma_setup(cp);
   3122 
   3123 	idedma_ctl = 0;
   3124 	dtm = 0;
   3125 
   3126 	for (drive = 0; drive < 2; drive++) {
   3127 		drvp = &chp->ch_drive[drive];
   3128 		/* If no drive, skip */
   3129 		if ((drvp->drive_flags & DRIVE) == 0)
   3130 			continue;
   3131 		if (drvp->drive_flags & DRIVE_UDMA) {
   3132 			/* use Ultra/DMA */
   3133 			drvp->drive_flags &= ~DRIVE_DMA;
   3134 			idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
   3135 			dtm |= DTM_IDEx_DMA;
   3136 		} else if (drvp->drive_flags & DRIVE_DMA) {
   3137 			idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
   3138 			dtm |= DTM_IDEx_DMA;
   3139 		} else {
   3140 			dtm |= DTM_IDEx_PIO;
   3141 		}
   3142 	}
   3143 
   3144 	/*
   3145 	 * Nothing to do to setup modes; it is meaningless in S-ATA
   3146 	 * (but many S-ATA drives still want to get the SET_FEATURE
   3147 	 * command).
   3148 	 */
   3149 	if (idedma_ctl != 0) {
   3150 		/* Add software bits in status register */
   3151 		bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   3152 		    IDEDMA_CTL + (IDEDMA_SCH_OFFSET * chp->channel),
   3153 		    idedma_ctl);
   3154 	}
   3155 	pci_conf_write(sc->sc_pc, sc->sc_tag,
   3156 	    chp->channel == 0 ? SII3112_DTM_IDE0 : SII3112_DTM_IDE1, dtm);
   3157 }
   3158 
   3159 void
   3160 cy693_chip_map(sc, pa)
   3161 	struct pciide_softc *sc;
   3162 	struct pci_attach_args *pa;
   3163 {
   3164 	struct pciide_channel *cp;
   3165 	pcireg_t interface = PCI_INTERFACE(pa->pa_class);
   3166 	bus_size_t cmdsize, ctlsize;
   3167 
   3168 	if (pciide_chipen(sc, pa) == 0)
   3169 		return;
   3170 
   3171 	/*
   3172 	 * this chip has 2 PCI IDE functions, one for primary and one for
   3173 	 * secondary. So we need to call pciide_mapregs_compat() with
   3174 	 * the real channel
   3175 	 */
   3176 	if (pa->pa_function == 1) {
   3177 		sc->sc_cy_compatchan = 0;
   3178 	} else if (pa->pa_function == 2) {
   3179 		sc->sc_cy_compatchan = 1;
   3180 	} else {
   3181 		aprint_error("%s: unexpected PCI function %d\n",
   3182 		    sc->sc_wdcdev.sc_dev.dv_xname, pa->pa_function);
   3183 		return;
   3184 	}
   3185 	if (interface & PCIIDE_INTERFACE_BUS_MASTER_DMA) {
   3186 		aprint_normal("%s: bus-master DMA support present",
   3187 		    sc->sc_wdcdev.sc_dev.dv_xname);
   3188 		pciide_mapreg_dma(sc, pa);
   3189 	} else {
   3190 		aprint_normal("%s: hardware does not support DMA",
   3191 		    sc->sc_wdcdev.sc_dev.dv_xname);
   3192 		sc->sc_dma_ok = 0;
   3193 	}
   3194 	aprint_normal("\n");
   3195 
   3196 	sc->sc_cy_handle = cy82c693_init(pa->pa_iot);
   3197 	if (sc->sc_cy_handle == NULL) {
   3198 		aprint_error("%s: unable to map hyperCache control registers\n",
   3199 		    sc->sc_wdcdev.sc_dev.dv_xname);
   3200 		sc->sc_dma_ok = 0;
   3201 	}
   3202 
   3203 	sc->sc_wdcdev.cap = WDC_CAPABILITY_DATA16 | WDC_CAPABILITY_DATA32 |
   3204 	    WDC_CAPABILITY_MODE;
   3205 	if (sc->sc_dma_ok) {
   3206 		sc->sc_wdcdev.cap |= WDC_CAPABILITY_DMA | WDC_CAPABILITY_IRQACK;
   3207 		sc->sc_wdcdev.irqack = pciide_irqack;
   3208 	}
   3209 	sc->sc_wdcdev.PIO_cap = 4;
   3210 	sc->sc_wdcdev.DMA_cap = 2;
   3211 	sc->sc_wdcdev.set_modes = cy693_setup_channel;
   3212 
   3213 	sc->sc_wdcdev.channels = sc->wdc_chanarray;
   3214 	sc->sc_wdcdev.nchannels = 1;
   3215 
   3216 	/* Only one channel for this chip; if we are here it's enabled */
   3217 	cp = &sc->pciide_channels[0];
   3218 	sc->wdc_chanarray[0] = &cp->wdc_channel;
   3219 	cp->name = PCIIDE_CHANNEL_NAME(0);
   3220 	cp->wdc_channel.channel = 0;
   3221 	cp->wdc_channel.wdc = &sc->sc_wdcdev;
   3222 	cp->wdc_channel.ch_queue =
   3223 	    malloc(sizeof(struct channel_queue), M_DEVBUF, M_NOWAIT);
   3224 	if (cp->wdc_channel.ch_queue == NULL) {
   3225 		aprint_error("%s primary channel: "
   3226 		    "can't allocate memory for command queue",
   3227 		sc->sc_wdcdev.sc_dev.dv_xname);
   3228 		return;
   3229 	}
   3230 	aprint_normal("%s: primary channel %s to ",
   3231 	    sc->sc_wdcdev.sc_dev.dv_xname,
   3232 	    (interface & PCIIDE_INTERFACE_SETTABLE(0)) ?
   3233 	    "configured" : "wired");
   3234 	if (interface & PCIIDE_INTERFACE_PCI(0)) {
   3235 		aprint_normal("native-PCI mode\n");
   3236 		pciide_mapregs_native(pa, cp, &cmdsize, &ctlsize,
   3237 		    pciide_pci_intr);
   3238 	} else {
   3239 		aprint_normal("compatibility mode\n");
   3240 		pciide_mapregs_compat(pa, cp, sc->sc_cy_compatchan, &cmdsize,
   3241 		    &ctlsize);
   3242 	}
   3243 }
   3244 
   3245 void
   3246 cy693_setup_channel(chp)
   3247 	struct channel_softc *chp;
   3248 {
   3249 	struct ata_drive_datas *drvp;
   3250 	int drive;
   3251 	u_int32_t cy_cmd_ctrl;
   3252 	u_int32_t idedma_ctl;
   3253 	struct pciide_channel *cp = (struct pciide_channel*)chp;
   3254 	struct pciide_softc *sc = (struct pciide_softc *)cp->wdc_channel.wdc;
   3255 	int dma_mode = -1;
   3256 
   3257 	cy_cmd_ctrl = idedma_ctl = 0;
   3258 
   3259 	/* setup DMA if needed */
   3260 	pciide_channel_dma_setup(cp);
   3261 
   3262 	for (drive = 0; drive < 2; drive++) {
   3263 		drvp = &chp->ch_drive[drive];
   3264 		/* If no drive, skip */
   3265 		if ((drvp->drive_flags & DRIVE) == 0)
   3266 			continue;
   3267 		/* add timing values, setup DMA if needed */
   3268 		if (drvp->drive_flags & DRIVE_DMA) {
   3269 			idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
   3270 			/* use Multiword DMA */
   3271 			if (dma_mode == -1 || dma_mode > drvp->DMA_mode)
   3272 				dma_mode = drvp->DMA_mode;
   3273 		}
   3274 		cy_cmd_ctrl |= (cy_pio_pulse[drvp->PIO_mode] <<
   3275 		    CY_CMD_CTRL_IOW_PULSE_OFF(drive));
   3276 		cy_cmd_ctrl |= (cy_pio_rec[drvp->PIO_mode] <<
   3277 		    CY_CMD_CTRL_IOW_REC_OFF(drive));
   3278 		cy_cmd_ctrl |= (cy_pio_pulse[drvp->PIO_mode] <<
   3279 		    CY_CMD_CTRL_IOR_PULSE_OFF(drive));
   3280 		cy_cmd_ctrl |= (cy_pio_rec[drvp->PIO_mode] <<
   3281 		    CY_CMD_CTRL_IOR_REC_OFF(drive));
   3282 	}
   3283 	pci_conf_write(sc->sc_pc, sc->sc_tag, CY_CMD_CTRL, cy_cmd_ctrl);
   3284 	chp->ch_drive[0].DMA_mode = dma_mode;
   3285 	chp->ch_drive[1].DMA_mode = dma_mode;
   3286 
   3287 	if (dma_mode == -1)
   3288 		dma_mode = 0;
   3289 
   3290 	if (sc->sc_cy_handle != NULL) {
   3291 		/* Note: `multiple' is implied. */
   3292 		cy82c693_write(sc->sc_cy_handle,
   3293 		    (sc->sc_cy_compatchan == 0) ?
   3294 		    CY_DMA_IDX_PRIMARY : CY_DMA_IDX_SECONDARY, dma_mode);
   3295 	}
   3296 
   3297 	if (idedma_ctl != 0) {
   3298 		/* Add software bits in status register */
   3299 		bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   3300 		    IDEDMA_CTL, idedma_ctl);
   3301 	}
   3302 }
   3303 
   3304 static struct sis_hostbr_type {
   3305 	u_int16_t id;
   3306 	u_int8_t rev;
   3307 	u_int8_t udma_mode;
   3308 	char *name;
   3309 	u_int8_t type;
   3310 #define SIS_TYPE_NOUDMA	0
   3311 #define SIS_TYPE_66	1
   3312 #define SIS_TYPE_100OLD	2
   3313 #define SIS_TYPE_100NEW 3
   3314 #define SIS_TYPE_133OLD 4
   3315 #define SIS_TYPE_133NEW 5
   3316 #define SIS_TYPE_SOUTH	6
   3317 } sis_hostbr_type[] = {
   3318 	/* Most infos here are from sos (at) freebsd.org */
   3319 	{PCI_PRODUCT_SIS_530HB, 0x00, 4, "530", SIS_TYPE_66},
   3320 #if 0
   3321 	/*
   3322 	 * controllers associated to a rev 0x2 530 Host to PCI Bridge
   3323 	 * have problems with UDMA (info provided by Christos)
   3324 	 */
   3325 	{PCI_PRODUCT_SIS_530HB, 0x02, 0, "530 (buggy)", SIS_TYPE_NOUDMA},
   3326 #endif
   3327 	{PCI_PRODUCT_SIS_540HB, 0x00, 4, "540", SIS_TYPE_66},
   3328 	{PCI_PRODUCT_SIS_550HB, 0x00, 4, "550", SIS_TYPE_66},
   3329 	{PCI_PRODUCT_SIS_620,   0x00, 4, "620", SIS_TYPE_66},
   3330 	{PCI_PRODUCT_SIS_630,   0x00, 4, "630", SIS_TYPE_66},
   3331 	{PCI_PRODUCT_SIS_630,   0x30, 5, "630S", SIS_TYPE_100NEW},
   3332 	{PCI_PRODUCT_SIS_633,   0x00, 5, "633", SIS_TYPE_100NEW},
   3333 	{PCI_PRODUCT_SIS_635,   0x00, 5, "635", SIS_TYPE_100NEW},
   3334 	{PCI_PRODUCT_SIS_640,   0x00, 4, "640", SIS_TYPE_SOUTH},
   3335 	{PCI_PRODUCT_SIS_645,   0x00, 6, "645", SIS_TYPE_SOUTH},
   3336 	{PCI_PRODUCT_SIS_646,   0x00, 6, "645DX", SIS_TYPE_SOUTH},
   3337 	{PCI_PRODUCT_SIS_648,   0x00, 6, "648", SIS_TYPE_SOUTH},
   3338 	{PCI_PRODUCT_SIS_650,   0x00, 6, "650", SIS_TYPE_SOUTH},
   3339 	{PCI_PRODUCT_SIS_651,   0x00, 6, "651", SIS_TYPE_SOUTH},
   3340 	{PCI_PRODUCT_SIS_652,   0x00, 6, "652", SIS_TYPE_SOUTH},
   3341 	{PCI_PRODUCT_SIS_655,   0x00, 6, "655", SIS_TYPE_SOUTH},
   3342 	{PCI_PRODUCT_SIS_658,   0x00, 6, "658", SIS_TYPE_SOUTH},
   3343 	{PCI_PRODUCT_SIS_730,   0x00, 5, "730", SIS_TYPE_100OLD},
   3344 	{PCI_PRODUCT_SIS_733,   0x00, 5, "733", SIS_TYPE_100NEW},
   3345 	{PCI_PRODUCT_SIS_735,   0x00, 5, "735", SIS_TYPE_100NEW},
   3346 	{PCI_PRODUCT_SIS_740,   0x00, 5, "740", SIS_TYPE_SOUTH},
   3347 	{PCI_PRODUCT_SIS_745,   0x00, 5, "745", SIS_TYPE_100NEW},
   3348 	{PCI_PRODUCT_SIS_746,   0x00, 6, "746", SIS_TYPE_SOUTH},
   3349 	{PCI_PRODUCT_SIS_748,   0x00, 6, "748", SIS_TYPE_SOUTH},
   3350 	{PCI_PRODUCT_SIS_750,   0x00, 6, "750", SIS_TYPE_SOUTH},
   3351 	{PCI_PRODUCT_SIS_751,   0x00, 6, "751", SIS_TYPE_SOUTH},
   3352 	{PCI_PRODUCT_SIS_752,   0x00, 6, "752", SIS_TYPE_SOUTH},
   3353 	{PCI_PRODUCT_SIS_755,   0x00, 6, "755", SIS_TYPE_SOUTH},
   3354 	/*
   3355 	 * From sos (at) freebsd.org: the 0x961 ID will never be found in real world
   3356 	 * {PCI_PRODUCT_SIS_961,   0x00, 6, "961", SIS_TYPE_133NEW},
   3357 	 */
   3358 	{PCI_PRODUCT_SIS_962,   0x00, 6, "962", SIS_TYPE_133NEW},
   3359 	{PCI_PRODUCT_SIS_963,   0x00, 6, "963", SIS_TYPE_133NEW},
   3360 };
   3361 
   3362 static struct sis_hostbr_type *sis_hostbr_type_match;
   3363 
   3364 static int
   3365 sis_hostbr_match(pa)
   3366 	struct pci_attach_args *pa;
   3367 {
   3368 	int i;
   3369 	if (PCI_VENDOR(pa->pa_id) != PCI_VENDOR_SIS)
   3370 		return 0;
   3371 	sis_hostbr_type_match = NULL;
   3372 	for (i = 0;
   3373 	    i < sizeof(sis_hostbr_type) / sizeof(sis_hostbr_type[0]);
   3374 	    i++) {
   3375 		if (PCI_PRODUCT(pa->pa_id) == sis_hostbr_type[i].id &&
   3376 		    PCI_REVISION(pa->pa_class) >= sis_hostbr_type[i].rev)
   3377 			sis_hostbr_type_match = &sis_hostbr_type[i];
   3378 	}
   3379 	return (sis_hostbr_type_match != NULL);
   3380 }
   3381 
   3382 static int sis_south_match(pa)
   3383 	struct pci_attach_args *pa;
   3384 {
   3385 	return(PCI_VENDOR(pa->pa_id) == PCI_VENDOR_SIS &&
   3386 		PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_SIS_85C503 &&
   3387 		PCI_REVISION(pa->pa_class) >= 0x10);
   3388 }
   3389 
   3390 void
   3391 sis_chip_map(sc, pa)
   3392 	struct pciide_softc *sc;
   3393 	struct pci_attach_args *pa;
   3394 {
   3395 	struct pciide_channel *cp;
   3396 	int channel;
   3397 	u_int8_t sis_ctr0 = pciide_pci_read(sc->sc_pc, sc->sc_tag, SIS_CTRL0);
   3398 	pcireg_t interface = PCI_INTERFACE(pa->pa_class);
   3399 	pcireg_t rev = PCI_REVISION(pa->pa_class);
   3400 	bus_size_t cmdsize, ctlsize;
   3401 
   3402 	if (pciide_chipen(sc, pa) == 0)
   3403 		return;
   3404 
   3405 	aprint_normal("%s: Silicon Integrated System ",
   3406 	    sc->sc_wdcdev.sc_dev.dv_xname);
   3407 	pci_find_device(NULL, sis_hostbr_match);
   3408 	if (sis_hostbr_type_match) {
   3409 		if (sis_hostbr_type_match->type == SIS_TYPE_SOUTH) {
   3410 			pciide_pci_write(sc->sc_pc, sc->sc_tag, SIS_REG_57,
   3411 			    pciide_pci_read(sc->sc_pc, sc->sc_tag,
   3412 			    SIS_REG_57) & 0x7f);
   3413 			if (PCI_PRODUCT(pci_conf_read(sc->sc_pc, sc->sc_tag,
   3414 			    PCI_ID_REG)) == SIS_PRODUCT_5518) {
   3415 				aprint_normal("96X UDMA%d",
   3416 				    sis_hostbr_type_match->udma_mode);
   3417 				sc->sis_type = SIS_TYPE_133NEW;
   3418 				sc->sc_wdcdev.UDMA_cap =
   3419 			    	    sis_hostbr_type_match->udma_mode;
   3420 			} else {
   3421 				if (pci_find_device(NULL, sis_south_match)) {
   3422 					sc->sis_type = SIS_TYPE_133OLD;
   3423 					sc->sc_wdcdev.UDMA_cap =
   3424 				    	    sis_hostbr_type_match->udma_mode;
   3425 				} else {
   3426 					sc->sis_type = SIS_TYPE_100NEW;
   3427 					sc->sc_wdcdev.UDMA_cap =
   3428 					    sis_hostbr_type_match->udma_mode;
   3429 				}
   3430 			}
   3431 		} else {
   3432 			sc->sis_type = sis_hostbr_type_match->type;
   3433 			sc->sc_wdcdev.UDMA_cap =
   3434 		    	    sis_hostbr_type_match->udma_mode;
   3435 		}
   3436 		aprint_normal(sis_hostbr_type_match->name);
   3437 	} else {
   3438 		aprint_normal("5597/5598");
   3439 		if (rev >= 0xd0) {
   3440 			sc->sc_wdcdev.UDMA_cap = 2;
   3441 			sc->sis_type = SIS_TYPE_66;
   3442 		} else {
   3443 			sc->sc_wdcdev.UDMA_cap = 0;
   3444 			sc->sis_type = SIS_TYPE_NOUDMA;
   3445 		}
   3446 	}
   3447 	aprint_normal(" IDE controller (rev. 0x%02x)\n",
   3448 	    PCI_REVISION(pa->pa_class));
   3449 	aprint_normal("%s: bus-master DMA support present",
   3450 	    sc->sc_wdcdev.sc_dev.dv_xname);
   3451 	pciide_mapreg_dma(sc, pa);
   3452 	aprint_normal("\n");
   3453 
   3454 	sc->sc_wdcdev.cap = WDC_CAPABILITY_DATA16 | WDC_CAPABILITY_DATA32 |
   3455 	    WDC_CAPABILITY_MODE;
   3456 	if (sc->sc_dma_ok) {
   3457 		sc->sc_wdcdev.cap |= WDC_CAPABILITY_DMA | WDC_CAPABILITY_IRQACK;
   3458 		sc->sc_wdcdev.irqack = pciide_irqack;
   3459 		if (sc->sis_type >= SIS_TYPE_66)
   3460 			sc->sc_wdcdev.cap |= WDC_CAPABILITY_UDMA;
   3461 	}
   3462 
   3463 	sc->sc_wdcdev.PIO_cap = 4;
   3464 	sc->sc_wdcdev.DMA_cap = 2;
   3465 
   3466 	sc->sc_wdcdev.channels = sc->wdc_chanarray;
   3467 	sc->sc_wdcdev.nchannels = PCIIDE_NUM_CHANNELS;
   3468 	switch(sc->sis_type) {
   3469 	case SIS_TYPE_NOUDMA:
   3470 	case SIS_TYPE_66:
   3471 	case SIS_TYPE_100OLD:
   3472 		sc->sc_wdcdev.set_modes = sis_setup_channel;
   3473 		pciide_pci_write(sc->sc_pc, sc->sc_tag, SIS_MISC,
   3474 		    pciide_pci_read(sc->sc_pc, sc->sc_tag, SIS_MISC) |
   3475 		    SIS_MISC_TIM_SEL | SIS_MISC_FIFO_SIZE | SIS_MISC_GTC);
   3476 		break;
   3477 	case SIS_TYPE_100NEW:
   3478 	case SIS_TYPE_133OLD:
   3479 		sc->sc_wdcdev.set_modes = sis_setup_channel;
   3480 		pciide_pci_write(sc->sc_pc, sc->sc_tag, SIS_REG_49,
   3481 		    pciide_pci_read(sc->sc_pc, sc->sc_tag, SIS_REG_49) | 0x01);
   3482 		break;
   3483 	case SIS_TYPE_133NEW:
   3484 		sc->sc_wdcdev.set_modes = sis96x_setup_channel;
   3485 		pciide_pci_write(sc->sc_pc, sc->sc_tag, SIS_REG_50,
   3486 		    pciide_pci_read(sc->sc_pc, sc->sc_tag, SIS_REG_50) & 0xf7);
   3487 		pciide_pci_write(sc->sc_pc, sc->sc_tag, SIS_REG_52,
   3488 		    pciide_pci_read(sc->sc_pc, sc->sc_tag, SIS_REG_52) & 0xf7);
   3489 		break;
   3490 	}
   3491 
   3492 
   3493 	for (channel = 0; channel < sc->sc_wdcdev.nchannels; channel++) {
   3494 		cp = &sc->pciide_channels[channel];
   3495 		if (pciide_chansetup(sc, channel, interface) == 0)
   3496 			continue;
   3497 		if ((channel == 0 && (sis_ctr0 & SIS_CTRL0_CHAN0_EN) == 0) ||
   3498 		    (channel == 1 && (sis_ctr0 & SIS_CTRL0_CHAN1_EN) == 0)) {
   3499 			aprint_normal("%s: %s channel ignored (disabled)\n",
   3500 			    sc->sc_wdcdev.sc_dev.dv_xname, cp->name);
   3501 			cp->wdc_channel.ch_flags |= WDCF_DISABLED;
   3502 			continue;
   3503 		}
   3504 		pciide_mapchan(pa, cp, interface, &cmdsize, &ctlsize,
   3505 		    pciide_pci_intr);
   3506 	}
   3507 }
   3508 
   3509 void
   3510 sis96x_setup_channel(chp)
   3511 	struct channel_softc *chp;
   3512 {
   3513 	struct ata_drive_datas *drvp;
   3514 	int drive;
   3515 	u_int32_t sis_tim;
   3516 	u_int32_t idedma_ctl;
   3517 	int regtim;
   3518 	struct pciide_channel *cp = (struct pciide_channel*)chp;
   3519 	struct pciide_softc *sc = (struct pciide_softc *)cp->wdc_channel.wdc;
   3520 
   3521 	sis_tim = 0;
   3522 	idedma_ctl = 0;
   3523 	/* setup DMA if needed */
   3524 	pciide_channel_dma_setup(cp);
   3525 
   3526 	for (drive = 0; drive < 2; drive++) {
   3527 		regtim = SIS_TIM133(
   3528 		    pciide_pci_read(sc->sc_pc, sc->sc_tag, SIS_REG_57),
   3529 		    chp->channel, drive);
   3530 		drvp = &chp->ch_drive[drive];
   3531 		/* If no drive, skip */
   3532 		if ((drvp->drive_flags & DRIVE) == 0)
   3533 			continue;
   3534 		/* add timing values, setup DMA if needed */
   3535 		if (drvp->drive_flags & DRIVE_UDMA) {
   3536 			/* use Ultra/DMA */
   3537 			drvp->drive_flags &= ~DRIVE_DMA;
   3538 			if (pciide_pci_read(sc->sc_pc, sc->sc_tag,
   3539 			    SIS96x_REG_CBL(chp->channel)) & SIS96x_REG_CBL_33) {
   3540 				if (drvp->UDMA_mode > 2)
   3541 					drvp->UDMA_mode = 2;
   3542 			}
   3543 			sis_tim |= sis_udma133new_tim[drvp->UDMA_mode];
   3544 			sis_tim |= sis_pio133new_tim[drvp->PIO_mode];
   3545 			idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
   3546 		} else if (drvp->drive_flags & DRIVE_DMA) {
   3547 			/*
   3548 			 * use Multiword DMA
   3549 			 * Timings will be used for both PIO and DMA,
   3550 			 * so adjust DMA mode if needed
   3551 			 */
   3552 			if (drvp->PIO_mode > (drvp->DMA_mode + 2))
   3553 				drvp->PIO_mode = drvp->DMA_mode + 2;
   3554 			if (drvp->DMA_mode + 2 > (drvp->PIO_mode))
   3555 				drvp->DMA_mode = (drvp->PIO_mode > 2) ?
   3556 				    drvp->PIO_mode - 2 : 0;
   3557 			sis_tim |= sis_dma133new_tim[drvp->DMA_mode];
   3558 			idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
   3559 		} else {
   3560 			sis_tim |= sis_pio133new_tim[drvp->PIO_mode];
   3561 		}
   3562 		WDCDEBUG_PRINT(("sis96x_setup_channel: new timings reg for "
   3563 		    "channel %d drive %d: 0x%x (reg 0x%x)\n",
   3564 		    chp->channel, drive, sis_tim, regtim), DEBUG_PROBE);
   3565 		pci_conf_write(sc->sc_pc, sc->sc_tag, regtim, sis_tim);
   3566 	}
   3567 	if (idedma_ctl != 0) {
   3568 		/* Add software bits in status register */
   3569 		bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   3570 		    IDEDMA_CTL+ (IDEDMA_SCH_OFFSET * chp->channel),
   3571 		    idedma_ctl);
   3572 	}
   3573 }
   3574 
   3575 void
   3576 sis_setup_channel(chp)
   3577 	struct channel_softc *chp;
   3578 {
   3579 	struct ata_drive_datas *drvp;
   3580 	int drive;
   3581 	u_int32_t sis_tim;
   3582 	u_int32_t idedma_ctl;
   3583 	struct pciide_channel *cp = (struct pciide_channel*)chp;
   3584 	struct pciide_softc *sc = (struct pciide_softc *)cp->wdc_channel.wdc;
   3585 
   3586 	WDCDEBUG_PRINT(("sis_setup_channel: old timings reg for "
   3587 	    "channel %d 0x%x\n", chp->channel,
   3588 	    pci_conf_read(sc->sc_pc, sc->sc_tag, SIS_TIM(chp->channel))),
   3589 	    DEBUG_PROBE);
   3590 	sis_tim = 0;
   3591 	idedma_ctl = 0;
   3592 	/* setup DMA if needed */
   3593 	pciide_channel_dma_setup(cp);
   3594 
   3595 	for (drive = 0; drive < 2; drive++) {
   3596 		drvp = &chp->ch_drive[drive];
   3597 		/* If no drive, skip */
   3598 		if ((drvp->drive_flags & DRIVE) == 0)
   3599 			continue;
   3600 		/* add timing values, setup DMA if needed */
   3601 		if ((drvp->drive_flags & DRIVE_DMA) == 0 &&
   3602 		    (drvp->drive_flags & DRIVE_UDMA) == 0)
   3603 			goto pio;
   3604 
   3605 		if (drvp->drive_flags & DRIVE_UDMA) {
   3606 			/* use Ultra/DMA */
   3607 			drvp->drive_flags &= ~DRIVE_DMA;
   3608 			if (pciide_pci_read(sc->sc_pc, sc->sc_tag,
   3609 			    SIS_REG_CBL) & SIS_REG_CBL_33(chp->channel)) {
   3610 				if (drvp->UDMA_mode > 2)
   3611 					drvp->UDMA_mode = 2;
   3612 			}
   3613 			switch (sc->sis_type) {
   3614 			case SIS_TYPE_66:
   3615 			case SIS_TYPE_100OLD:
   3616 				sis_tim |= sis_udma66_tim[drvp->UDMA_mode] <<
   3617 				    SIS_TIM66_UDMA_TIME_OFF(drive);
   3618 				break;
   3619 			case SIS_TYPE_100NEW:
   3620 				sis_tim |=
   3621 				    sis_udma100new_tim[drvp->UDMA_mode] <<
   3622 				    SIS_TIM100_UDMA_TIME_OFF(drive);
   3623 			case SIS_TYPE_133OLD:
   3624 				sis_tim |=
   3625 				    sis_udma133old_tim[drvp->UDMA_mode] <<
   3626 				    SIS_TIM100_UDMA_TIME_OFF(drive);
   3627 				break;
   3628 			default:
   3629 				aprint_error("unknown SiS IDE type %d\n",
   3630 				    sc->sis_type);
   3631 			}
   3632 		} else {
   3633 			/*
   3634 			 * use Multiword DMA
   3635 			 * Timings will be used for both PIO and DMA,
   3636 			 * so adjust DMA mode if needed
   3637 			 */
   3638 			if (drvp->PIO_mode > (drvp->DMA_mode + 2))
   3639 				drvp->PIO_mode = drvp->DMA_mode + 2;
   3640 			if (drvp->DMA_mode + 2 > (drvp->PIO_mode))
   3641 				drvp->DMA_mode = (drvp->PIO_mode > 2) ?
   3642 				    drvp->PIO_mode - 2 : 0;
   3643 			if (drvp->DMA_mode == 0)
   3644 				drvp->PIO_mode = 0;
   3645 		}
   3646 		idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
   3647 pio:		switch (sc->sis_type) {
   3648 		case SIS_TYPE_NOUDMA:
   3649 		case SIS_TYPE_66:
   3650 		case SIS_TYPE_100OLD:
   3651 			sis_tim |= sis_pio_act[drvp->PIO_mode] <<
   3652 			    SIS_TIM66_ACT_OFF(drive);
   3653 			sis_tim |= sis_pio_rec[drvp->PIO_mode] <<
   3654 			    SIS_TIM66_REC_OFF(drive);
   3655 			break;
   3656 		case SIS_TYPE_100NEW:
   3657 		case SIS_TYPE_133OLD:
   3658 			sis_tim |= sis_pio_act[drvp->PIO_mode] <<
   3659 			    SIS_TIM100_ACT_OFF(drive);
   3660 			sis_tim |= sis_pio_rec[drvp->PIO_mode] <<
   3661 			    SIS_TIM100_REC_OFF(drive);
   3662 			break;
   3663 		default:
   3664 			aprint_error("unknown SiS IDE type %d\n",
   3665 			    sc->sis_type);
   3666 		}
   3667 	}
   3668 	WDCDEBUG_PRINT(("sis_setup_channel: new timings reg for "
   3669 	    "channel %d 0x%x\n", chp->channel, sis_tim), DEBUG_PROBE);
   3670 	pci_conf_write(sc->sc_pc, sc->sc_tag, SIS_TIM(chp->channel), sis_tim);
   3671 	if (idedma_ctl != 0) {
   3672 		/* Add software bits in status register */
   3673 		bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   3674 		    IDEDMA_CTL+ (IDEDMA_SCH_OFFSET * chp->channel),
   3675 		    idedma_ctl);
   3676 	}
   3677 }
   3678 
   3679 void
   3680 acer_chip_map(sc, pa)
   3681 	struct pciide_softc *sc;
   3682 	struct pci_attach_args *pa;
   3683 {
   3684 	struct pciide_channel *cp;
   3685 	int channel;
   3686 	pcireg_t cr, interface;
   3687 	bus_size_t cmdsize, ctlsize;
   3688 	pcireg_t rev = PCI_REVISION(pa->pa_class);
   3689 
   3690 	if (pciide_chipen(sc, pa) == 0)
   3691 		return;
   3692 
   3693 	aprint_normal("%s: bus-master DMA support present",
   3694 	    sc->sc_wdcdev.sc_dev.dv_xname);
   3695 	pciide_mapreg_dma(sc, pa);
   3696 	aprint_normal("\n");
   3697 	sc->sc_wdcdev.cap = WDC_CAPABILITY_DATA16 | WDC_CAPABILITY_DATA32 |
   3698 	    WDC_CAPABILITY_MODE;
   3699 	if (sc->sc_dma_ok) {
   3700 		sc->sc_wdcdev.cap |= WDC_CAPABILITY_DMA;
   3701 		if (rev >= 0x20) {
   3702 			sc->sc_wdcdev.cap |= WDC_CAPABILITY_UDMA;
   3703 			if (rev >= 0xC4)
   3704 				sc->sc_wdcdev.UDMA_cap = 5;
   3705 			else if (rev >= 0xC2)
   3706 				sc->sc_wdcdev.UDMA_cap = 4;
   3707 			else
   3708 				sc->sc_wdcdev.UDMA_cap = 2;
   3709 		}
   3710 		sc->sc_wdcdev.cap |= WDC_CAPABILITY_IRQACK;
   3711 		sc->sc_wdcdev.irqack = pciide_irqack;
   3712 	}
   3713 
   3714 	sc->sc_wdcdev.PIO_cap = 4;
   3715 	sc->sc_wdcdev.DMA_cap = 2;
   3716 	sc->sc_wdcdev.set_modes = acer_setup_channel;
   3717 	sc->sc_wdcdev.channels = sc->wdc_chanarray;
   3718 	sc->sc_wdcdev.nchannels = PCIIDE_NUM_CHANNELS;
   3719 
   3720 	pciide_pci_write(sc->sc_pc, sc->sc_tag, ACER_CDRC,
   3721 	    (pciide_pci_read(sc->sc_pc, sc->sc_tag, ACER_CDRC) |
   3722 		ACER_CDRC_DMA_EN) & ~ACER_CDRC_FIFO_DISABLE);
   3723 
   3724 	/* Enable "microsoft register bits" R/W. */
   3725 	pciide_pci_write(sc->sc_pc, sc->sc_tag, ACER_CCAR3,
   3726 	    pciide_pci_read(sc->sc_pc, sc->sc_tag, ACER_CCAR3) | ACER_CCAR3_PI);
   3727 	pciide_pci_write(sc->sc_pc, sc->sc_tag, ACER_CCAR1,
   3728 	    pciide_pci_read(sc->sc_pc, sc->sc_tag, ACER_CCAR1) &
   3729 	    ~(ACER_CHANSTATUS_RO|PCIIDE_CHAN_RO(0)|PCIIDE_CHAN_RO(1)));
   3730 	pciide_pci_write(sc->sc_pc, sc->sc_tag, ACER_CCAR2,
   3731 	    pciide_pci_read(sc->sc_pc, sc->sc_tag, ACER_CCAR2) &
   3732 	    ~ACER_CHANSTATUSREGS_RO);
   3733 	cr = pci_conf_read(sc->sc_pc, sc->sc_tag, PCI_CLASS_REG);
   3734 	cr |= (PCIIDE_CHANSTATUS_EN << PCI_INTERFACE_SHIFT);
   3735 	pci_conf_write(sc->sc_pc, sc->sc_tag, PCI_CLASS_REG, cr);
   3736 	/* Don't use cr, re-read the real register content instead */
   3737 	interface = PCI_INTERFACE(pci_conf_read(sc->sc_pc, sc->sc_tag,
   3738 	    PCI_CLASS_REG));
   3739 
   3740 	/* From linux: enable "Cable Detection" */
   3741 	if (rev >= 0xC2) {
   3742 		pciide_pci_write(sc->sc_pc, sc->sc_tag, ACER_0x4B,
   3743 		    pciide_pci_read(sc->sc_pc, sc->sc_tag, ACER_0x4B)
   3744 		    | ACER_0x4B_CDETECT);
   3745 	}
   3746 
   3747 	for (channel = 0; channel < sc->sc_wdcdev.nchannels; channel++) {
   3748 		cp = &sc->pciide_channels[channel];
   3749 		if (pciide_chansetup(sc, channel, interface) == 0)
   3750 			continue;
   3751 		if ((interface & PCIIDE_CHAN_EN(channel)) == 0) {
   3752 			aprint_normal("%s: %s channel ignored (disabled)\n",
   3753 			    sc->sc_wdcdev.sc_dev.dv_xname, cp->name);
   3754 			cp->wdc_channel.ch_flags |= WDCF_DISABLED;
   3755 			continue;
   3756 		}
   3757 		/* newer controllers seems to lack the ACER_CHIDS. Sigh */
   3758 		pciide_mapchan(pa, cp, interface, &cmdsize, &ctlsize,
   3759 		     (rev >= 0xC2) ? pciide_pci_intr : acer_pci_intr);
   3760 	}
   3761 }
   3762 
   3763 void
   3764 acer_setup_channel(chp)
   3765 	struct channel_softc *chp;
   3766 {
   3767 	struct ata_drive_datas *drvp;
   3768 	int drive;
   3769 	u_int32_t acer_fifo_udma;
   3770 	u_int32_t idedma_ctl;
   3771 	struct pciide_channel *cp = (struct pciide_channel*)chp;
   3772 	struct pciide_softc *sc = (struct pciide_softc *)cp->wdc_channel.wdc;
   3773 
   3774 	idedma_ctl = 0;
   3775 	acer_fifo_udma = pci_conf_read(sc->sc_pc, sc->sc_tag, ACER_FTH_UDMA);
   3776 	WDCDEBUG_PRINT(("acer_setup_channel: old fifo/udma reg 0x%x\n",
   3777 	    acer_fifo_udma), DEBUG_PROBE);
   3778 	/* setup DMA if needed */
   3779 	pciide_channel_dma_setup(cp);
   3780 
   3781 	if ((chp->ch_drive[0].drive_flags | chp->ch_drive[1].drive_flags) &
   3782 	    DRIVE_UDMA) { /* check 80 pins cable */
   3783 		if (pciide_pci_read(sc->sc_pc, sc->sc_tag, ACER_0x4A) &
   3784 		    ACER_0x4A_80PIN(chp->channel)) {
   3785 			if (chp->ch_drive[0].UDMA_mode > 2)
   3786 				chp->ch_drive[0].UDMA_mode = 2;
   3787 			if (chp->ch_drive[1].UDMA_mode > 2)
   3788 				chp->ch_drive[1].UDMA_mode = 2;
   3789 		}
   3790 	}
   3791 
   3792 	for (drive = 0; drive < 2; drive++) {
   3793 		drvp = &chp->ch_drive[drive];
   3794 		/* If no drive, skip */
   3795 		if ((drvp->drive_flags & DRIVE) == 0)
   3796 			continue;
   3797 		WDCDEBUG_PRINT(("acer_setup_channel: old timings reg for "
   3798 		    "channel %d drive %d 0x%x\n", chp->channel, drive,
   3799 		    pciide_pci_read(sc->sc_pc, sc->sc_tag,
   3800 		    ACER_IDETIM(chp->channel, drive))), DEBUG_PROBE);
   3801 		/* clear FIFO/DMA mode */
   3802 		acer_fifo_udma &= ~(ACER_FTH_OPL(chp->channel, drive, 0x3) |
   3803 		    ACER_UDMA_EN(chp->channel, drive) |
   3804 		    ACER_UDMA_TIM(chp->channel, drive, 0x7));
   3805 
   3806 		/* add timing values, setup DMA if needed */
   3807 		if ((drvp->drive_flags & DRIVE_DMA) == 0 &&
   3808 		    (drvp->drive_flags & DRIVE_UDMA) == 0) {
   3809 			acer_fifo_udma |=
   3810 			    ACER_FTH_OPL(chp->channel, drive, 0x1);
   3811 			goto pio;
   3812 		}
   3813 
   3814 		acer_fifo_udma |= ACER_FTH_OPL(chp->channel, drive, 0x2);
   3815 		if (drvp->drive_flags & DRIVE_UDMA) {
   3816 			/* use Ultra/DMA */
   3817 			drvp->drive_flags &= ~DRIVE_DMA;
   3818 			acer_fifo_udma |= ACER_UDMA_EN(chp->channel, drive);
   3819 			acer_fifo_udma |=
   3820 			    ACER_UDMA_TIM(chp->channel, drive,
   3821 				acer_udma[drvp->UDMA_mode]);
   3822 			/* XXX disable if one drive < UDMA3 ? */
   3823 			if (drvp->UDMA_mode >= 3) {
   3824 				pciide_pci_write(sc->sc_pc, sc->sc_tag,
   3825 				    ACER_0x4B,
   3826 				    pciide_pci_read(sc->sc_pc, sc->sc_tag,
   3827 					ACER_0x4B) | ACER_0x4B_UDMA66);
   3828 			}
   3829 		} else {
   3830 			/*
   3831 			 * use Multiword DMA
   3832 			 * Timings will be used for both PIO and DMA,
   3833 			 * so adjust DMA mode if needed
   3834 			 */
   3835 			if (drvp->PIO_mode > (drvp->DMA_mode + 2))
   3836 				drvp->PIO_mode = drvp->DMA_mode + 2;
   3837 			if (drvp->DMA_mode + 2 > (drvp->PIO_mode))
   3838 				drvp->DMA_mode = (drvp->PIO_mode > 2) ?
   3839 				    drvp->PIO_mode - 2 : 0;
   3840 			if (drvp->DMA_mode == 0)
   3841 				drvp->PIO_mode = 0;
   3842 		}
   3843 		idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
   3844 pio:		pciide_pci_write(sc->sc_pc, sc->sc_tag,
   3845 		    ACER_IDETIM(chp->channel, drive),
   3846 		    acer_pio[drvp->PIO_mode]);
   3847 	}
   3848 	WDCDEBUG_PRINT(("acer_setup_channel: new fifo/udma reg 0x%x\n",
   3849 	    acer_fifo_udma), DEBUG_PROBE);
   3850 	pci_conf_write(sc->sc_pc, sc->sc_tag, ACER_FTH_UDMA, acer_fifo_udma);
   3851 	if (idedma_ctl != 0) {
   3852 		/* Add software bits in status register */
   3853 		bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   3854 		    IDEDMA_CTL + (IDEDMA_SCH_OFFSET * chp->channel),
   3855 		    idedma_ctl);
   3856 	}
   3857 }
   3858 
   3859 int
   3860 acer_pci_intr(arg)
   3861 	void *arg;
   3862 {
   3863 	struct pciide_softc *sc = arg;
   3864 	struct pciide_channel *cp;
   3865 	struct channel_softc *wdc_cp;
   3866 	int i, rv, crv;
   3867 	u_int32_t chids;
   3868 
   3869 	rv = 0;
   3870 	chids = pciide_pci_read(sc->sc_pc, sc->sc_tag, ACER_CHIDS);
   3871 	for (i = 0; i < sc->sc_wdcdev.nchannels; i++) {
   3872 		cp = &sc->pciide_channels[i];
   3873 		wdc_cp = &cp->wdc_channel;
   3874 		/* If a compat channel skip. */
   3875 		if (cp->compat)
   3876 			continue;
   3877 		if (chids & ACER_CHIDS_INT(i)) {
   3878 			crv = wdcintr(wdc_cp);
   3879 			if (crv == 0)
   3880 				printf("%s:%d: bogus intr\n",
   3881 				    sc->sc_wdcdev.sc_dev.dv_xname, i);
   3882 			else
   3883 				rv = 1;
   3884 		}
   3885 	}
   3886 	return rv;
   3887 }
   3888 
   3889 void
   3890 hpt_chip_map(sc, pa)
   3891 	struct pciide_softc *sc;
   3892 	struct pci_attach_args *pa;
   3893 {
   3894 	struct pciide_channel *cp;
   3895 	int i, compatchan, revision;
   3896 	pcireg_t interface;
   3897 	bus_size_t cmdsize, ctlsize;
   3898 
   3899 	if (pciide_chipen(sc, pa) == 0)
   3900 		return;
   3901 
   3902 	revision = PCI_REVISION(pa->pa_class);
   3903 	aprint_normal("%s: Triones/Highpoint ",
   3904 	    sc->sc_wdcdev.sc_dev.dv_xname);
   3905 	if (sc->sc_pp->ide_product == PCI_PRODUCT_TRIONES_HPT374)
   3906 		aprint_normal("HPT374 IDE Controller\n");
   3907 	else if (sc->sc_pp->ide_product == PCI_PRODUCT_TRIONES_HPT372)
   3908 		aprint_normal("HPT372 IDE Controller\n");
   3909 	else if (sc->sc_pp->ide_product == PCI_PRODUCT_TRIONES_HPT366) {
   3910 		if (revision == HPT372_REV)
   3911 			aprint_normal("HPT372 IDE Controller\n");
   3912 		else if (revision == HPT370_REV)
   3913 			aprint_normal("HPT370 IDE Controller\n");
   3914 		else if (revision == HPT370A_REV)
   3915 			aprint_normal("HPT370A IDE Controller\n");
   3916 		else if (revision == HPT366_REV)
   3917 			aprint_normal("HPT366 IDE Controller\n");
   3918 		else
   3919 			aprint_normal("unknown HPT IDE controller rev %d\n",
   3920 			    revision);
   3921 	} else
   3922 		aprint_normal("unknown HPT IDE controller 0x%x\n",
   3923 		    sc->sc_pp->ide_product);
   3924 
   3925 	/*
   3926 	 * when the chip is in native mode it identifies itself as a
   3927 	 * 'misc mass storage'. Fake interface in this case.
   3928 	 */
   3929 	if (PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_MASS_STORAGE_IDE) {
   3930 		interface = PCI_INTERFACE(pa->pa_class);
   3931 	} else {
   3932 		interface = PCIIDE_INTERFACE_BUS_MASTER_DMA |
   3933 		    PCIIDE_INTERFACE_PCI(0);
   3934 		if ((sc->sc_pp->ide_product == PCI_PRODUCT_TRIONES_HPT366 &&
   3935 		    (revision == HPT370_REV || revision == HPT370A_REV ||
   3936 		     revision == HPT372_REV)) ||
   3937 		    sc->sc_pp->ide_product == PCI_PRODUCT_TRIONES_HPT372 ||
   3938 		    sc->sc_pp->ide_product == PCI_PRODUCT_TRIONES_HPT374)
   3939 			interface |= PCIIDE_INTERFACE_PCI(1);
   3940 	}
   3941 
   3942 	aprint_normal("%s: bus-master DMA support present",
   3943 	    sc->sc_wdcdev.sc_dev.dv_xname);
   3944 	pciide_mapreg_dma(sc, pa);
   3945 	aprint_normal("\n");
   3946 	sc->sc_wdcdev.cap = WDC_CAPABILITY_DATA16 | WDC_CAPABILITY_DATA32 |
   3947 	    WDC_CAPABILITY_MODE;
   3948 	if (sc->sc_dma_ok) {
   3949 		sc->sc_wdcdev.cap |= WDC_CAPABILITY_DMA | WDC_CAPABILITY_UDMA;
   3950 		sc->sc_wdcdev.cap |= WDC_CAPABILITY_IRQACK;
   3951 		sc->sc_wdcdev.irqack = pciide_irqack;
   3952 	}
   3953 	sc->sc_wdcdev.PIO_cap = 4;
   3954 	sc->sc_wdcdev.DMA_cap = 2;
   3955 
   3956 	sc->sc_wdcdev.set_modes = hpt_setup_channel;
   3957 	sc->sc_wdcdev.channels = sc->wdc_chanarray;
   3958 	if (sc->sc_pp->ide_product == PCI_PRODUCT_TRIONES_HPT366 &&
   3959 	    revision == HPT366_REV) {
   3960 		sc->sc_wdcdev.UDMA_cap = 4;
   3961 		/*
   3962 		 * The 366 has 2 PCI IDE functions, one for primary and one
   3963 		 * for secondary. So we need to call pciide_mapregs_compat()
   3964 		 * with the real channel
   3965 		 */
   3966 		if (pa->pa_function == 0) {
   3967 			compatchan = 0;
   3968 		} else if (pa->pa_function == 1) {
   3969 			compatchan = 1;
   3970 		} else {
   3971 			aprint_error("%s: unexpected PCI function %d\n",
   3972 			    sc->sc_wdcdev.sc_dev.dv_xname, pa->pa_function);
   3973 			return;
   3974 		}
   3975 		sc->sc_wdcdev.nchannels = 1;
   3976 	} else {
   3977 		sc->sc_wdcdev.nchannels = 2;
   3978 		if (sc->sc_pp->ide_product == PCI_PRODUCT_TRIONES_HPT374 ||
   3979 		    sc->sc_pp->ide_product == PCI_PRODUCT_TRIONES_HPT372 ||
   3980 		    (sc->sc_pp->ide_product == PCI_PRODUCT_TRIONES_HPT366 &&
   3981 		    revision == HPT372_REV))
   3982 			sc->sc_wdcdev.UDMA_cap = 6;
   3983 		else
   3984 			sc->sc_wdcdev.UDMA_cap = 5;
   3985 	}
   3986 	for (i = 0; i < sc->sc_wdcdev.nchannels; i++) {
   3987 		cp = &sc->pciide_channels[i];
   3988 		if (sc->sc_wdcdev.nchannels > 1) {
   3989 			compatchan = i;
   3990 			if((pciide_pci_read(sc->sc_pc, sc->sc_tag,
   3991 			   HPT370_CTRL1(i)) & HPT370_CTRL1_EN) == 0) {
   3992 				aprint_normal(
   3993 				    "%s: %s channel ignored (disabled)\n",
   3994 				    sc->sc_wdcdev.sc_dev.dv_xname, cp->name);
   3995 				cp->wdc_channel.ch_flags |= WDCF_DISABLED;
   3996 				continue;
   3997 			}
   3998 		}
   3999 		if (pciide_chansetup(sc, i, interface) == 0)
   4000 			continue;
   4001 		if (interface & PCIIDE_INTERFACE_PCI(i)) {
   4002 			pciide_mapregs_native(pa, cp, &cmdsize,
   4003 			    &ctlsize, hpt_pci_intr);
   4004 		} else {
   4005 			pciide_mapregs_compat(pa, cp, compatchan,
   4006 			    &cmdsize, &ctlsize);
   4007 		}
   4008 	}
   4009 	if ((sc->sc_pp->ide_product == PCI_PRODUCT_TRIONES_HPT366 &&
   4010 	    (revision == HPT370_REV || revision == HPT370A_REV ||
   4011 	     revision == HPT372_REV)) ||
   4012 	    sc->sc_pp->ide_product == PCI_PRODUCT_TRIONES_HPT372 ||
   4013 	    sc->sc_pp->ide_product == PCI_PRODUCT_TRIONES_HPT374) {
   4014 		/*
   4015 		 * HPT370_REV and highter has a bit to disable interrupts,
   4016 		 * make sure to clear it
   4017 		 */
   4018 		pciide_pci_write(sc->sc_pc, sc->sc_tag, HPT_CSEL,
   4019 		    pciide_pci_read(sc->sc_pc, sc->sc_tag, HPT_CSEL) &
   4020 		    ~HPT_CSEL_IRQDIS);
   4021 	}
   4022 	/* set clocks, etc (mandatory on 372/4, optional otherwise) */
   4023 	if ((sc->sc_pp->ide_product == PCI_PRODUCT_TRIONES_HPT366 &&
   4024 	     revision == HPT372_REV ) ||
   4025 	    sc->sc_pp->ide_product == PCI_PRODUCT_TRIONES_HPT372 ||
   4026 	    sc->sc_pp->ide_product == PCI_PRODUCT_TRIONES_HPT374)
   4027 		pciide_pci_write(sc->sc_pc, sc->sc_tag, HPT_SC2,
   4028 		    (pciide_pci_read(sc->sc_pc, sc->sc_tag, HPT_SC2) &
   4029 		     HPT_SC2_MAEN) | HPT_SC2_OSC_EN);
   4030 	return;
   4031 }
   4032 
   4033 void
   4034 hpt_setup_channel(chp)
   4035 	struct channel_softc *chp;
   4036 {
   4037 	struct ata_drive_datas *drvp;
   4038 	int drive;
   4039 	int cable;
   4040 	u_int32_t before, after;
   4041 	u_int32_t idedma_ctl;
   4042 	struct pciide_channel *cp = (struct pciide_channel*)chp;
   4043 	struct pciide_softc *sc = (struct pciide_softc *)cp->wdc_channel.wdc;
   4044 	int revision =
   4045 	     PCI_REVISION(pci_conf_read(sc->sc_pc, sc->sc_tag, PCI_CLASS_REG));
   4046 
   4047 	cable = pciide_pci_read(sc->sc_pc, sc->sc_tag, HPT_CSEL);
   4048 
   4049 	/* setup DMA if needed */
   4050 	pciide_channel_dma_setup(cp);
   4051 
   4052 	idedma_ctl = 0;
   4053 
   4054 	/* Per drive settings */
   4055 	for (drive = 0; drive < 2; drive++) {
   4056 		drvp = &chp->ch_drive[drive];
   4057 		/* If no drive, skip */
   4058 		if ((drvp->drive_flags & DRIVE) == 0)
   4059 			continue;
   4060 		before = pci_conf_read(sc->sc_pc, sc->sc_tag,
   4061 					HPT_IDETIM(chp->channel, drive));
   4062 
   4063 		/* add timing values, setup DMA if needed */
   4064 		if (drvp->drive_flags & DRIVE_UDMA) {
   4065 			/* use Ultra/DMA */
   4066 			drvp->drive_flags &= ~DRIVE_DMA;
   4067 			if ((cable & HPT_CSEL_CBLID(chp->channel)) != 0 &&
   4068 			    drvp->UDMA_mode > 2)
   4069 				drvp->UDMA_mode = 2;
   4070 			switch (sc->sc_pp->ide_product) {
   4071 			case PCI_PRODUCT_TRIONES_HPT374:
   4072 				after = hpt374_udma[drvp->UDMA_mode];
   4073 				break;
   4074 			case PCI_PRODUCT_TRIONES_HPT372:
   4075 				after = hpt372_udma[drvp->UDMA_mode];
   4076 				break;
   4077 			case PCI_PRODUCT_TRIONES_HPT366:
   4078 			default:
   4079 				switch(revision) {
   4080 				case HPT372_REV:
   4081 					after = hpt372_udma[drvp->UDMA_mode];
   4082 					break;
   4083 				case HPT370_REV:
   4084 				case HPT370A_REV:
   4085 					after = hpt370_udma[drvp->UDMA_mode];
   4086 					break;
   4087 				case HPT366_REV:
   4088 				default:
   4089 					after = hpt366_udma[drvp->UDMA_mode];
   4090 					break;
   4091 				}
   4092 			}
   4093 			idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
   4094 		} else if (drvp->drive_flags & DRIVE_DMA) {
   4095 			/*
   4096 			 * use Multiword DMA.
   4097 			 * Timings will be used for both PIO and DMA, so adjust
   4098 			 * DMA mode if needed
   4099 			 */
   4100 			if (drvp->PIO_mode >= 3 &&
   4101 			    (drvp->DMA_mode + 2) > drvp->PIO_mode) {
   4102 				drvp->DMA_mode = drvp->PIO_mode - 2;
   4103 			}
   4104 			switch (sc->sc_pp->ide_product) {
   4105 			case PCI_PRODUCT_TRIONES_HPT374:
   4106 				after = hpt374_dma[drvp->DMA_mode];
   4107 				break;
   4108 			case PCI_PRODUCT_TRIONES_HPT372:
   4109 				after = hpt372_dma[drvp->DMA_mode];
   4110 				break;
   4111 			case PCI_PRODUCT_TRIONES_HPT366:
   4112 			default:
   4113 				switch(revision) {
   4114 				case HPT372_REV:
   4115 					after = hpt372_dma[drvp->DMA_mode];
   4116 					break;
   4117 				case HPT370_REV:
   4118 				case HPT370A_REV:
   4119 					after = hpt370_dma[drvp->DMA_mode];
   4120 					break;
   4121 				case HPT366_REV:
   4122 				default:
   4123 					after = hpt366_dma[drvp->DMA_mode];
   4124 					break;
   4125 				}
   4126 			}
   4127 			idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
   4128 		} else {
   4129 			/* PIO only */
   4130 			switch (sc->sc_pp->ide_product) {
   4131 			case PCI_PRODUCT_TRIONES_HPT374:
   4132 				after = hpt374_pio[drvp->PIO_mode];
   4133 				break;
   4134 			case PCI_PRODUCT_TRIONES_HPT372:
   4135 				after = hpt372_pio[drvp->PIO_mode];
   4136 				break;
   4137 			case PCI_PRODUCT_TRIONES_HPT366:
   4138 			default:
   4139 				switch(revision) {
   4140 				case HPT372_REV:
   4141 					after = hpt372_pio[drvp->PIO_mode];
   4142 					break;
   4143 				case HPT370_REV:
   4144 				case HPT370A_REV:
   4145 					after = hpt370_pio[drvp->PIO_mode];
   4146 					break;
   4147 				case HPT366_REV:
   4148 				default:
   4149 					after = hpt366_pio[drvp->PIO_mode];
   4150 					break;
   4151 				}
   4152 			}
   4153 		}
   4154 		pci_conf_write(sc->sc_pc, sc->sc_tag,
   4155 		    HPT_IDETIM(chp->channel, drive), after);
   4156 		WDCDEBUG_PRINT(("%s: bus speed register set to 0x%08x "
   4157 		    "(BIOS 0x%08x)\n", drvp->drv_softc->dv_xname,
   4158 		    after, before), DEBUG_PROBE);
   4159 	}
   4160 	if (idedma_ctl != 0) {
   4161 		/* Add software bits in status register */
   4162 		bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   4163 		    IDEDMA_CTL + (IDEDMA_SCH_OFFSET * chp->channel),
   4164 		    idedma_ctl);
   4165 	}
   4166 }
   4167 
   4168 int
   4169 hpt_pci_intr(arg)
   4170 	void *arg;
   4171 {
   4172 	struct pciide_softc *sc = arg;
   4173 	struct pciide_channel *cp;
   4174 	struct channel_softc *wdc_cp;
   4175 	int rv = 0;
   4176 	int dmastat, i, crv;
   4177 
   4178 	for (i = 0; i < sc->sc_wdcdev.nchannels; i++) {
   4179 		dmastat = bus_space_read_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   4180 		    IDEDMA_CTL + IDEDMA_SCH_OFFSET * i);
   4181 		if((dmastat & ( IDEDMA_CTL_ACT | IDEDMA_CTL_INTR)) !=
   4182 		    IDEDMA_CTL_INTR)
   4183 			continue;
   4184 		cp = &sc->pciide_channels[i];
   4185 		wdc_cp = &cp->wdc_channel;
   4186 		crv = wdcintr(wdc_cp);
   4187 		if (crv == 0) {
   4188 			printf("%s:%d: bogus intr\n",
   4189 			    sc->sc_wdcdev.sc_dev.dv_xname, i);
   4190 			bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   4191 			    IDEDMA_CTL + IDEDMA_SCH_OFFSET * i, dmastat);
   4192 		} else
   4193 			rv = 1;
   4194 	}
   4195 	return rv;
   4196 }
   4197 
   4198 
   4199 /* Macros to test product */
   4200 #define PDC_IS_262(sc)							\
   4201 	((sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_ULTRA66 ||	\
   4202 	(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_ULTRA100 ||	\
   4203 	(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_ULTRA100X ||	\
   4204 	(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_ULTRA100TX2 ||	\
   4205 	(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_ULTRA100TX2v2 || \
   4206 	(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_ULTRA133 ||	\
   4207 	(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_ULTRA133TX2 ||	\
   4208 	(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_MBULTRA133 || \
   4209 	(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_ULTRA133TX2v2 || \
   4210 	(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_FASTTRAK133LITE)
   4211 #define PDC_IS_265(sc)							\
   4212 	((sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_ULTRA100 ||	\
   4213 	(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_ULTRA100X ||	\
   4214 	(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_ULTRA100TX2 ||	\
   4215 	(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_ULTRA100TX2v2 || \
   4216 	(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_ULTRA133 ||	\
   4217 	(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_ULTRA133TX2 ||	\
   4218 	(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_MBULTRA133 || \
   4219 	(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_ULTRA133TX2v2 || \
   4220 	(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_FASTTRAK133LITE)
   4221 #define PDC_IS_268(sc)							\
   4222 	((sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_ULTRA100TX2 ||	\
   4223 	(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_ULTRA100TX2v2 || \
   4224 	(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_ULTRA133 ||	\
   4225 	(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_ULTRA133TX2 ||	\
   4226 	(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_MBULTRA133 || \
   4227 	(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_ULTRA133TX2v2 || \
   4228 	(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_FASTTRAK133LITE)
   4229 #define PDC_IS_276(sc)							\
   4230 	((sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_ULTRA133 ||	\
   4231 	(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_ULTRA133TX2 ||	\
   4232 	(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_MBULTRA133 || \
   4233 	(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_ULTRA133TX2v2 || \
   4234 	(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_FASTTRAK133LITE)
   4235 
   4236 void
   4237 pdc202xx_chip_map(sc, pa)
   4238 	struct pciide_softc *sc;
   4239 	struct pci_attach_args *pa;
   4240 {
   4241 	struct pciide_channel *cp;
   4242 	int channel;
   4243 	pcireg_t interface, st, mode;
   4244 	bus_size_t cmdsize, ctlsize;
   4245 
   4246 	if (!PDC_IS_268(sc)) {
   4247 		st = pci_conf_read(sc->sc_pc, sc->sc_tag, PDC2xx_STATE);
   4248 		WDCDEBUG_PRINT(("pdc202xx_setup_chip: controller state 0x%x\n",
   4249 		    st), DEBUG_PROBE);
   4250 	}
   4251 	if (pciide_chipen(sc, pa) == 0)
   4252 		return;
   4253 
   4254 	/* turn off  RAID mode */
   4255 	if (!PDC_IS_268(sc))
   4256 		st &= ~PDC2xx_STATE_IDERAID;
   4257 
   4258 	/*
   4259 	 * can't rely on the PCI_CLASS_REG content if the chip was in raid
   4260 	 * mode. We have to fake interface
   4261 	 */
   4262 	interface = PCIIDE_INTERFACE_SETTABLE(0) | PCIIDE_INTERFACE_SETTABLE(1);
   4263 	if (PDC_IS_268(sc) || (st & PDC2xx_STATE_NATIVE))
   4264 		interface |= PCIIDE_INTERFACE_PCI(0) | PCIIDE_INTERFACE_PCI(1);
   4265 
   4266 	aprint_normal("%s: bus-master DMA support present",
   4267 	    sc->sc_wdcdev.sc_dev.dv_xname);
   4268 	pciide_mapreg_dma(sc, pa);
   4269 	aprint_normal("\n");
   4270 	sc->sc_wdcdev.cap = WDC_CAPABILITY_DATA16 | WDC_CAPABILITY_DATA32 |
   4271 	    WDC_CAPABILITY_MODE;
   4272 	if (sc->sc_dma_ok) {
   4273 		sc->sc_wdcdev.cap |= WDC_CAPABILITY_DMA | WDC_CAPABILITY_UDMA;
   4274 		sc->sc_wdcdev.cap |= WDC_CAPABILITY_IRQACK;
   4275 		sc->sc_wdcdev.irqack = pciide_irqack;
   4276 	}
   4277 	if (PCI_CLASS(pa->pa_class) == PCI_CLASS_MASS_STORAGE &&
   4278 	    PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_MASS_STORAGE_RAID)
   4279 		sc->sc_wdcdev.cap |= WDC_CAPABILITY_RAID;
   4280 	sc->sc_wdcdev.PIO_cap = 4;
   4281 	sc->sc_wdcdev.DMA_cap = 2;
   4282 	if (PDC_IS_276(sc))
   4283 		sc->sc_wdcdev.UDMA_cap = 6;
   4284 	else if (PDC_IS_265(sc))
   4285 		sc->sc_wdcdev.UDMA_cap = 5;
   4286 	else if (PDC_IS_262(sc))
   4287 		sc->sc_wdcdev.UDMA_cap = 4;
   4288 	else
   4289 		sc->sc_wdcdev.UDMA_cap = 2;
   4290 	sc->sc_wdcdev.set_modes = PDC_IS_268(sc) ?
   4291 			pdc20268_setup_channel : pdc202xx_setup_channel;
   4292 	sc->sc_wdcdev.channels = sc->wdc_chanarray;
   4293 	sc->sc_wdcdev.nchannels = PCIIDE_NUM_CHANNELS;
   4294 
   4295 	if (sc->sc_pp->ide_product == PCI_PRODUCT_PROMISE_ULTRA66 ||
   4296 	    sc->sc_pp->ide_product == PCI_PRODUCT_PROMISE_ULTRA100 ||
   4297 	    sc->sc_pp->ide_product == PCI_PRODUCT_PROMISE_ULTRA100X) {
   4298 		sc->sc_wdcdev.dma_start = pdc20262_dma_start;
   4299 		sc->sc_wdcdev.dma_finish = pdc20262_dma_finish;
   4300 	}
   4301 
   4302 	if (!PDC_IS_268(sc)) {
   4303 		/* setup failsafe defaults */
   4304 		mode = 0;
   4305 		mode = PDC2xx_TIM_SET_PA(mode, pdc2xx_pa[0]);
   4306 		mode = PDC2xx_TIM_SET_PB(mode, pdc2xx_pb[0]);
   4307 		mode = PDC2xx_TIM_SET_MB(mode, pdc2xx_dma_mb[0]);
   4308 		mode = PDC2xx_TIM_SET_MC(mode, pdc2xx_dma_mc[0]);
   4309 		for (channel = 0;
   4310 		     channel < sc->sc_wdcdev.nchannels;
   4311 		     channel++) {
   4312 			WDCDEBUG_PRINT(("pdc202xx_setup_chip: channel %d "
   4313 			    "drive 0 initial timings  0x%x, now 0x%x\n",
   4314 			    channel, pci_conf_read(sc->sc_pc, sc->sc_tag,
   4315 			    PDC2xx_TIM(channel, 0)), mode | PDC2xx_TIM_IORDYp),
   4316 			    DEBUG_PROBE);
   4317 			pci_conf_write(sc->sc_pc, sc->sc_tag,
   4318 			    PDC2xx_TIM(channel, 0), mode | PDC2xx_TIM_IORDYp);
   4319 			WDCDEBUG_PRINT(("pdc202xx_setup_chip: channel %d "
   4320 			    "drive 1 initial timings  0x%x, now 0x%x\n",
   4321 			    channel, pci_conf_read(sc->sc_pc, sc->sc_tag,
   4322 			    PDC2xx_TIM(channel, 1)), mode), DEBUG_PROBE);
   4323 			pci_conf_write(sc->sc_pc, sc->sc_tag,
   4324 			    PDC2xx_TIM(channel, 1), mode);
   4325 		}
   4326 
   4327 		mode = PDC2xx_SCR_DMA;
   4328 		if (PDC_IS_265(sc)) {
   4329 			mode = PDC2xx_SCR_SET_GEN(mode, PDC265_SCR_GEN_LAT);
   4330 		} else if (PDC_IS_262(sc)) {
   4331 			mode = PDC2xx_SCR_SET_GEN(mode, PDC262_SCR_GEN_LAT);
   4332 		} else {
   4333 			/* the BIOS set it up this way */
   4334 			mode = PDC2xx_SCR_SET_GEN(mode, 0x1);
   4335 		}
   4336 		mode = PDC2xx_SCR_SET_I2C(mode, 0x3); /* ditto */
   4337 		mode = PDC2xx_SCR_SET_POLL(mode, 0x1); /* ditto */
   4338 		WDCDEBUG_PRINT(("pdc202xx_setup_chip: initial SCR  0x%x, "
   4339 		    "now 0x%x\n",
   4340 		    bus_space_read_4(sc->sc_dma_iot, sc->sc_dma_ioh,
   4341 			PDC2xx_SCR),
   4342 		    mode), DEBUG_PROBE);
   4343 		bus_space_write_4(sc->sc_dma_iot, sc->sc_dma_ioh,
   4344 		    PDC2xx_SCR, mode);
   4345 
   4346 		/* controller initial state register is OK even without BIOS */
   4347 		/* Set DMA mode to IDE DMA compatibility */
   4348 		mode =
   4349 		    bus_space_read_1(sc->sc_dma_iot, sc->sc_dma_ioh, PDC2xx_PM);
   4350 		WDCDEBUG_PRINT(("pdc202xx_setup_chip: primary mode 0x%x", mode),
   4351 		    DEBUG_PROBE);
   4352 		bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh, PDC2xx_PM,
   4353 		    mode | 0x1);
   4354 		mode =
   4355 		    bus_space_read_1(sc->sc_dma_iot, sc->sc_dma_ioh, PDC2xx_SM);
   4356 		WDCDEBUG_PRINT((", secondary mode 0x%x\n", mode ), DEBUG_PROBE);
   4357 		bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh, PDC2xx_SM,
   4358 		    mode | 0x1);
   4359 	}
   4360 
   4361 	for (channel = 0; channel < sc->sc_wdcdev.nchannels; channel++) {
   4362 		cp = &sc->pciide_channels[channel];
   4363 		if (pciide_chansetup(sc, channel, interface) == 0)
   4364 			continue;
   4365 		if (!PDC_IS_268(sc) && (st & (PDC_IS_262(sc) ?
   4366 		    PDC262_STATE_EN(channel):PDC246_STATE_EN(channel))) == 0) {
   4367 			aprint_normal("%s: %s channel ignored (disabled)\n",
   4368 			    sc->sc_wdcdev.sc_dev.dv_xname, cp->name);
   4369 			cp->wdc_channel.ch_flags |= WDCF_DISABLED;
   4370 			continue;
   4371 		}
   4372 		pciide_mapchan(pa, cp, interface, &cmdsize, &ctlsize,
   4373 		    PDC_IS_265(sc) ? pdc20265_pci_intr : pdc202xx_pci_intr);
   4374 	}
   4375 	if (!PDC_IS_268(sc)) {
   4376 		WDCDEBUG_PRINT(("pdc202xx_setup_chip: new controller state "
   4377 		    "0x%x\n", st), DEBUG_PROBE);
   4378 		pci_conf_write(sc->sc_pc, sc->sc_tag, PDC2xx_STATE, st);
   4379 	}
   4380 	return;
   4381 }
   4382 
   4383 void
   4384 pdc202xx_setup_channel(chp)
   4385 	struct channel_softc *chp;
   4386 {
   4387 	struct ata_drive_datas *drvp;
   4388 	int drive;
   4389 	pcireg_t mode, st;
   4390 	u_int32_t idedma_ctl, scr, atapi;
   4391 	struct pciide_channel *cp = (struct pciide_channel*)chp;
   4392 	struct pciide_softc *sc = (struct pciide_softc *)cp->wdc_channel.wdc;
   4393 	int channel = chp->channel;
   4394 
   4395 	/* setup DMA if needed */
   4396 	pciide_channel_dma_setup(cp);
   4397 
   4398 	idedma_ctl = 0;
   4399 	WDCDEBUG_PRINT(("pdc202xx_setup_channel %s: scr 0x%x\n",
   4400 	    sc->sc_wdcdev.sc_dev.dv_xname,
   4401 	    bus_space_read_1(sc->sc_dma_iot, sc->sc_dma_ioh, PDC262_U66)),
   4402 	    DEBUG_PROBE);
   4403 
   4404 	/* Per channel settings */
   4405 	if (PDC_IS_262(sc)) {
   4406 		scr = bus_space_read_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   4407 		    PDC262_U66);
   4408 		st = pci_conf_read(sc->sc_pc, sc->sc_tag, PDC2xx_STATE);
   4409 		/* Trim UDMA mode */
   4410 		if ((st & PDC262_STATE_80P(channel)) != 0 ||
   4411 		    (chp->ch_drive[0].drive_flags & DRIVE_UDMA &&
   4412 		    chp->ch_drive[0].UDMA_mode <= 2) ||
   4413 		    (chp->ch_drive[1].drive_flags & DRIVE_UDMA &&
   4414 		    chp->ch_drive[1].UDMA_mode <= 2)) {
   4415 			if (chp->ch_drive[0].UDMA_mode > 2)
   4416 				chp->ch_drive[0].UDMA_mode = 2;
   4417 			if (chp->ch_drive[1].UDMA_mode > 2)
   4418 				chp->ch_drive[1].UDMA_mode = 2;
   4419 		}
   4420 		/* Set U66 if needed */
   4421 		if ((chp->ch_drive[0].drive_flags & DRIVE_UDMA &&
   4422 		    chp->ch_drive[0].UDMA_mode > 2) ||
   4423 		    (chp->ch_drive[1].drive_flags & DRIVE_UDMA &&
   4424 		    chp->ch_drive[1].UDMA_mode > 2))
   4425 			scr |= PDC262_U66_EN(channel);
   4426 		else
   4427 			scr &= ~PDC262_U66_EN(channel);
   4428 		bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   4429 		    PDC262_U66, scr);
   4430 		WDCDEBUG_PRINT(("pdc202xx_setup_channel %s:%d: ATAPI 0x%x\n",
   4431 		    sc->sc_wdcdev.sc_dev.dv_xname, channel,
   4432 		    bus_space_read_4(sc->sc_dma_iot, sc->sc_dma_ioh,
   4433 		    PDC262_ATAPI(channel))), DEBUG_PROBE);
   4434 		if (chp->ch_drive[0].drive_flags & DRIVE_ATAPI ||
   4435 			chp->ch_drive[1].drive_flags & DRIVE_ATAPI) {
   4436 			if (((chp->ch_drive[0].drive_flags & DRIVE_UDMA) &&
   4437 			    !(chp->ch_drive[1].drive_flags & DRIVE_UDMA) &&
   4438 			    (chp->ch_drive[1].drive_flags & DRIVE_DMA)) ||
   4439 			    ((chp->ch_drive[1].drive_flags & DRIVE_UDMA) &&
   4440 			    !(chp->ch_drive[0].drive_flags & DRIVE_UDMA) &&
   4441 			    (chp->ch_drive[0].drive_flags & DRIVE_DMA)))
   4442 				atapi = 0;
   4443 			else
   4444 				atapi = PDC262_ATAPI_UDMA;
   4445 			bus_space_write_4(sc->sc_dma_iot, sc->sc_dma_ioh,
   4446 			    PDC262_ATAPI(channel), atapi);
   4447 		}
   4448 	}
   4449 	for (drive = 0; drive < 2; drive++) {
   4450 		drvp = &chp->ch_drive[drive];
   4451 		/* If no drive, skip */
   4452 		if ((drvp->drive_flags & DRIVE) == 0)
   4453 			continue;
   4454 		mode = 0;
   4455 		if (drvp->drive_flags & DRIVE_UDMA) {
   4456 			/* use Ultra/DMA */
   4457 			drvp->drive_flags &= ~DRIVE_DMA;
   4458 			mode = PDC2xx_TIM_SET_MB(mode,
   4459 			    pdc2xx_udma_mb[drvp->UDMA_mode]);
   4460 			mode = PDC2xx_TIM_SET_MC(mode,
   4461 			    pdc2xx_udma_mc[drvp->UDMA_mode]);
   4462 			idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
   4463 		} else if (drvp->drive_flags & DRIVE_DMA) {
   4464 			mode = PDC2xx_TIM_SET_MB(mode,
   4465 			    pdc2xx_dma_mb[drvp->DMA_mode]);
   4466 			mode = PDC2xx_TIM_SET_MC(mode,
   4467 			    pdc2xx_dma_mc[drvp->DMA_mode]);
   4468 			idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
   4469 		} else {
   4470 			mode = PDC2xx_TIM_SET_MB(mode,
   4471 			    pdc2xx_dma_mb[0]);
   4472 			mode = PDC2xx_TIM_SET_MC(mode,
   4473 			    pdc2xx_dma_mc[0]);
   4474 		}
   4475 		mode = PDC2xx_TIM_SET_PA(mode, pdc2xx_pa[drvp->PIO_mode]);
   4476 		mode = PDC2xx_TIM_SET_PB(mode, pdc2xx_pb[drvp->PIO_mode]);
   4477 		if (drvp->drive_flags & DRIVE_ATA)
   4478 			mode |= PDC2xx_TIM_PRE;
   4479 		mode |= PDC2xx_TIM_SYNC | PDC2xx_TIM_ERRDY;
   4480 		if (drvp->PIO_mode >= 3) {
   4481 			mode |= PDC2xx_TIM_IORDY;
   4482 			if (drive == 0)
   4483 				mode |= PDC2xx_TIM_IORDYp;
   4484 		}
   4485 		WDCDEBUG_PRINT(("pdc202xx_setup_channel: %s:%d:%d "
   4486 		    "timings 0x%x\n",
   4487 		    sc->sc_wdcdev.sc_dev.dv_xname,
   4488 		    chp->channel, drive, mode), DEBUG_PROBE);
   4489 		pci_conf_write(sc->sc_pc, sc->sc_tag,
   4490 		    PDC2xx_TIM(chp->channel, drive), mode);
   4491 	}
   4492 	if (idedma_ctl != 0) {
   4493 		/* Add software bits in status register */
   4494 		bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   4495 		    IDEDMA_CTL + (IDEDMA_SCH_OFFSET * chp->channel),
   4496 		    idedma_ctl);
   4497 	}
   4498 }
   4499 
   4500 void
   4501 pdc20268_setup_channel(chp)
   4502 	struct channel_softc *chp;
   4503 {
   4504 	struct ata_drive_datas *drvp;
   4505 	int drive;
   4506 	u_int32_t idedma_ctl;
   4507 	struct pciide_channel *cp = (struct pciide_channel*)chp;
   4508 	struct pciide_softc *sc = (struct pciide_softc *)cp->wdc_channel.wdc;
   4509 	int u100;
   4510 
   4511 	/* setup DMA if needed */
   4512 	pciide_channel_dma_setup(cp);
   4513 
   4514 	idedma_ctl = 0;
   4515 
   4516 	/* I don't know what this is for, FreeBSD does it ... */
   4517 	bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   4518 	    IDEDMA_CMD + 0x1 + IDEDMA_SCH_OFFSET * chp->channel, 0x0b);
   4519 
   4520 	/*
   4521 	 * cable type detect, from FreeBSD
   4522 	 */
   4523 	u100 = (bus_space_read_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   4524 	    IDEDMA_CMD + 0x3 + IDEDMA_SCH_OFFSET * chp->channel) & 0x04) ?
   4525 	    0 : 1;
   4526 
   4527 	for (drive = 0; drive < 2; drive++) {
   4528 		drvp = &chp->ch_drive[drive];
   4529 		/* If no drive, skip */
   4530 		if ((drvp->drive_flags & DRIVE) == 0)
   4531 			continue;
   4532 		if (drvp->drive_flags & DRIVE_UDMA) {
   4533 			/* use Ultra/DMA */
   4534 			drvp->drive_flags &= ~DRIVE_DMA;
   4535 			idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
   4536 			if (drvp->UDMA_mode > 2 && u100 == 0)
   4537 				drvp->UDMA_mode = 2;
   4538 		} else if (drvp->drive_flags & DRIVE_DMA) {
   4539 			idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
   4540 		}
   4541 	}
   4542 	/* nothing to do to setup modes, the controller snoop SET_FEATURE cmd */
   4543 	if (idedma_ctl != 0) {
   4544 		/* Add software bits in status register */
   4545 		bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   4546 		    IDEDMA_CTL + (IDEDMA_SCH_OFFSET * chp->channel),
   4547 		    idedma_ctl);
   4548 	}
   4549 }
   4550 
   4551 int
   4552 pdc202xx_pci_intr(arg)
   4553 	void *arg;
   4554 {
   4555 	struct pciide_softc *sc = arg;
   4556 	struct pciide_channel *cp;
   4557 	struct channel_softc *wdc_cp;
   4558 	int i, rv, crv;
   4559 	u_int32_t scr;
   4560 
   4561 	rv = 0;
   4562 	scr = bus_space_read_4(sc->sc_dma_iot, sc->sc_dma_ioh, PDC2xx_SCR);
   4563 	for (i = 0; i < sc->sc_wdcdev.nchannels; i++) {
   4564 		cp = &sc->pciide_channels[i];
   4565 		wdc_cp = &cp->wdc_channel;
   4566 		/* If a compat channel skip. */
   4567 		if (cp->compat)
   4568 			continue;
   4569 		if (scr & PDC2xx_SCR_INT(i)) {
   4570 			crv = wdcintr(wdc_cp);
   4571 			if (crv == 0)
   4572 				printf("%s:%d: bogus intr (reg 0x%x)\n",
   4573 				    sc->sc_wdcdev.sc_dev.dv_xname, i, scr);
   4574 			else
   4575 				rv = 1;
   4576 		}
   4577 	}
   4578 	return rv;
   4579 }
   4580 
   4581 int
   4582 pdc20265_pci_intr(arg)
   4583 	void *arg;
   4584 {
   4585 	struct pciide_softc *sc = arg;
   4586 	struct pciide_channel *cp;
   4587 	struct channel_softc *wdc_cp;
   4588 	int i, rv, crv;
   4589 	u_int32_t dmastat;
   4590 
   4591 	rv = 0;
   4592 	for (i = 0; i < sc->sc_wdcdev.nchannels; i++) {
   4593 		cp = &sc->pciide_channels[i];
   4594 		wdc_cp = &cp->wdc_channel;
   4595 		/* If a compat channel skip. */
   4596 		if (cp->compat)
   4597 			continue;
   4598 		/*
   4599 		 * The Ultra/100 seems to assert PDC2xx_SCR_INT * spuriously,
   4600 		 * however it asserts INT in IDEDMA_CTL even for non-DMA ops.
   4601 		 * So use it instead (requires 2 reg reads instead of 1,
   4602 		 * but we can't do it another way).
   4603 		 */
   4604 		dmastat = bus_space_read_1(sc->sc_dma_iot,
   4605 		    sc->sc_dma_ioh, IDEDMA_CTL + IDEDMA_SCH_OFFSET * i);
   4606 		if((dmastat & IDEDMA_CTL_INTR) == 0)
   4607 			continue;
   4608 		crv = wdcintr(wdc_cp);
   4609 		if (crv == 0)
   4610 			printf("%s:%d: bogus intr\n",
   4611 			    sc->sc_wdcdev.sc_dev.dv_xname, i);
   4612 		else
   4613 			rv = 1;
   4614 	}
   4615 	return rv;
   4616 }
   4617 
   4618 static void
   4619 pdc20262_dma_start(v, channel, drive)
   4620 	void *v;
   4621 	int channel, drive;
   4622 {
   4623 	struct pciide_softc *sc = v;
   4624 	struct pciide_dma_maps *dma_maps =
   4625 	    &sc->pciide_channels[channel].dma_maps[drive];
   4626 	int atapi;
   4627 
   4628 	if (dma_maps->dma_flags & WDC_DMA_LBA48) {
   4629 		atapi = (dma_maps->dma_flags & WDC_DMA_READ) ?
   4630 		    PDC262_ATAPI_LBA48_READ : PDC262_ATAPI_LBA48_WRITE;
   4631 		atapi |= dma_maps->dmamap_xfer->dm_mapsize >> 1;
   4632 		bus_space_write_4(sc->sc_dma_iot, sc->sc_dma_ioh,
   4633 		    PDC262_ATAPI(channel), atapi);
   4634 	}
   4635 
   4636 	pciide_dma_start(v, channel, drive);
   4637 }
   4638 
   4639 int
   4640 pdc20262_dma_finish(v, channel, drive, force)
   4641 	void *v;
   4642 	int channel, drive;
   4643 	int force;
   4644 {
   4645 	struct pciide_softc *sc = v;
   4646 	struct pciide_dma_maps *dma_maps =
   4647 	    &sc->pciide_channels[channel].dma_maps[drive];
   4648 	struct channel_softc *chp;
   4649 	int atapi, error;
   4650 
   4651 	error = pciide_dma_finish(v, channel, drive, force);
   4652 
   4653 	if (dma_maps->dma_flags & WDC_DMA_LBA48) {
   4654 		chp = sc->wdc_chanarray[channel];
   4655 		atapi = 0;
   4656 		if (chp->ch_drive[0].drive_flags & DRIVE_ATAPI ||
   4657 		    chp->ch_drive[1].drive_flags & DRIVE_ATAPI) {
   4658 			if ((!(chp->ch_drive[0].drive_flags & DRIVE_UDMA) ||
   4659 			    (chp->ch_drive[1].drive_flags & DRIVE_UDMA) ||
   4660 			    !(chp->ch_drive[1].drive_flags & DRIVE_DMA)) &&
   4661 			    (!(chp->ch_drive[1].drive_flags & DRIVE_UDMA) ||
   4662 			    (chp->ch_drive[0].drive_flags & DRIVE_UDMA) ||
   4663 			    !(chp->ch_drive[0].drive_flags & DRIVE_DMA)))
   4664 				atapi = PDC262_ATAPI_UDMA;
   4665 		}
   4666 		bus_space_write_4(sc->sc_dma_iot, sc->sc_dma_ioh,
   4667 		    PDC262_ATAPI(channel), atapi);
   4668 	}
   4669 
   4670 	return error;
   4671 }
   4672 
   4673 void
   4674 opti_chip_map(sc, pa)
   4675 	struct pciide_softc *sc;
   4676 	struct pci_attach_args *pa;
   4677 {
   4678 	struct pciide_channel *cp;
   4679 	bus_size_t cmdsize, ctlsize;
   4680 	pcireg_t interface;
   4681 	u_int8_t init_ctrl;
   4682 	int channel;
   4683 
   4684 	if (pciide_chipen(sc, pa) == 0)
   4685 		return;
   4686 
   4687 	aprint_normal("%s: bus-master DMA support present",
   4688 	    sc->sc_wdcdev.sc_dev.dv_xname);
   4689 
   4690 	/*
   4691 	 * XXXSCW:
   4692 	 * There seem to be a couple of buggy revisions/implementations
   4693 	 * of the OPTi pciide chipset. This kludge seems to fix one of
   4694 	 * the reported problems (PR/11644) but still fails for the
   4695 	 * other (PR/13151), although the latter may be due to other
   4696 	 * issues too...
   4697 	 */
   4698 	if (PCI_REVISION(pa->pa_class) <= 0x12) {
   4699 		aprint_normal(" but disabled due to chip rev. <= 0x12");
   4700 		sc->sc_dma_ok = 0;
   4701 	} else
   4702 		pciide_mapreg_dma(sc, pa);
   4703 
   4704 	aprint_normal("\n");
   4705 
   4706 	sc->sc_wdcdev.cap = WDC_CAPABILITY_DATA32 | WDC_CAPABILITY_DATA16 |
   4707 		WDC_CAPABILITY_MODE;
   4708 	sc->sc_wdcdev.PIO_cap = 4;
   4709 	if (sc->sc_dma_ok) {
   4710 		sc->sc_wdcdev.cap |= WDC_CAPABILITY_DMA | WDC_CAPABILITY_IRQACK;
   4711 		sc->sc_wdcdev.irqack = pciide_irqack;
   4712 		sc->sc_wdcdev.DMA_cap = 2;
   4713 	}
   4714 	sc->sc_wdcdev.set_modes = opti_setup_channel;
   4715 
   4716 	sc->sc_wdcdev.channels = sc->wdc_chanarray;
   4717 	sc->sc_wdcdev.nchannels = PCIIDE_NUM_CHANNELS;
   4718 
   4719 	init_ctrl = pciide_pci_read(sc->sc_pc, sc->sc_tag,
   4720 	    OPTI_REG_INIT_CONTROL);
   4721 
   4722 	interface = PCI_INTERFACE(pa->pa_class);
   4723 
   4724 	for (channel = 0; channel < sc->sc_wdcdev.nchannels; channel++) {
   4725 		cp = &sc->pciide_channels[channel];
   4726 		if (pciide_chansetup(sc, channel, interface) == 0)
   4727 			continue;
   4728 		if (channel == 1 &&
   4729 		    (init_ctrl & OPTI_INIT_CONTROL_CH2_DISABLE) != 0) {
   4730 			aprint_normal("%s: %s channel ignored (disabled)\n",
   4731 			    sc->sc_wdcdev.sc_dev.dv_xname, cp->name);
   4732 			cp->wdc_channel.ch_flags |= WDCF_DISABLED;
   4733 			continue;
   4734 		}
   4735 		pciide_mapchan(pa, cp, interface, &cmdsize, &ctlsize,
   4736 		    pciide_pci_intr);
   4737 	}
   4738 }
   4739 
   4740 void
   4741 opti_setup_channel(chp)
   4742 	struct channel_softc *chp;
   4743 {
   4744 	struct ata_drive_datas *drvp;
   4745 	struct pciide_channel *cp = (struct pciide_channel*)chp;
   4746 	struct pciide_softc *sc = (struct pciide_softc *)cp->wdc_channel.wdc;
   4747 	int drive, spd;
   4748 	int mode[2];
   4749 	u_int8_t rv, mr;
   4750 
   4751 	/*
   4752 	 * The `Delay' and `Address Setup Time' fields of the
   4753 	 * Miscellaneous Register are always zero initially.
   4754 	 */
   4755 	mr = opti_read_config(chp, OPTI_REG_MISC) & ~OPTI_MISC_INDEX_MASK;
   4756 	mr &= ~(OPTI_MISC_DELAY_MASK |
   4757 		OPTI_MISC_ADDR_SETUP_MASK |
   4758 		OPTI_MISC_INDEX_MASK);
   4759 
   4760 	/* Prime the control register before setting timing values */
   4761 	opti_write_config(chp, OPTI_REG_CONTROL, OPTI_CONTROL_DISABLE);
   4762 
   4763 	/* Determine the clockrate of the PCIbus the chip is attached to */
   4764 	spd = (int) opti_read_config(chp, OPTI_REG_STRAP);
   4765 	spd &= OPTI_STRAP_PCI_SPEED_MASK;
   4766 
   4767 	/* setup DMA if needed */
   4768 	pciide_channel_dma_setup(cp);
   4769 
   4770 	for (drive = 0; drive < 2; drive++) {
   4771 		drvp = &chp->ch_drive[drive];
   4772 		/* If no drive, skip */
   4773 		if ((drvp->drive_flags & DRIVE) == 0) {
   4774 			mode[drive] = -1;
   4775 			continue;
   4776 		}
   4777 
   4778 		if ((drvp->drive_flags & DRIVE_DMA)) {
   4779 			/*
   4780 			 * Timings will be used for both PIO and DMA,
   4781 			 * so adjust DMA mode if needed
   4782 			 */
   4783 			if (drvp->PIO_mode > (drvp->DMA_mode + 2))
   4784 				drvp->PIO_mode = drvp->DMA_mode + 2;
   4785 			if (drvp->DMA_mode + 2 > (drvp->PIO_mode))
   4786 				drvp->DMA_mode = (drvp->PIO_mode > 2) ?
   4787 				    drvp->PIO_mode - 2 : 0;
   4788 			if (drvp->DMA_mode == 0)
   4789 				drvp->PIO_mode = 0;
   4790 
   4791 			mode[drive] = drvp->DMA_mode + 5;
   4792 		} else
   4793 			mode[drive] = drvp->PIO_mode;
   4794 
   4795 		if (drive && mode[0] >= 0 &&
   4796 		    (opti_tim_as[spd][mode[0]] != opti_tim_as[spd][mode[1]])) {
   4797 			/*
   4798 			 * Can't have two drives using different values
   4799 			 * for `Address Setup Time'.
   4800 			 * Slow down the faster drive to compensate.
   4801 			 */
   4802 			int d = (opti_tim_as[spd][mode[0]] >
   4803 				 opti_tim_as[spd][mode[1]]) ?  0 : 1;
   4804 
   4805 			mode[d] = mode[1-d];
   4806 			chp->ch_drive[d].PIO_mode = chp->ch_drive[1-d].PIO_mode;
   4807 			chp->ch_drive[d].DMA_mode = 0;
   4808 			chp->ch_drive[d].drive_flags &= ~DRIVE_DMA;
   4809 		}
   4810 	}
   4811 
   4812 	for (drive = 0; drive < 2; drive++) {
   4813 		int m;
   4814 		if ((m = mode[drive]) < 0)
   4815 			continue;
   4816 
   4817 		/* Set the Address Setup Time and select appropriate index */
   4818 		rv = opti_tim_as[spd][m] << OPTI_MISC_ADDR_SETUP_SHIFT;
   4819 		rv |= OPTI_MISC_INDEX(drive);
   4820 		opti_write_config(chp, OPTI_REG_MISC, mr | rv);
   4821 
   4822 		/* Set the pulse width and recovery timing parameters */
   4823 		rv  = opti_tim_cp[spd][m] << OPTI_PULSE_WIDTH_SHIFT;
   4824 		rv |= opti_tim_rt[spd][m] << OPTI_RECOVERY_TIME_SHIFT;
   4825 		opti_write_config(chp, OPTI_REG_READ_CYCLE_TIMING, rv);
   4826 		opti_write_config(chp, OPTI_REG_WRITE_CYCLE_TIMING, rv);
   4827 
   4828 		/* Set the Enhanced Mode register appropriately */
   4829 	    	rv = pciide_pci_read(sc->sc_pc, sc->sc_tag, OPTI_REG_ENH_MODE);
   4830 		rv &= ~OPTI_ENH_MODE_MASK(chp->channel, drive);
   4831 		rv |= OPTI_ENH_MODE(chp->channel, drive, opti_tim_em[m]);
   4832 		pciide_pci_write(sc->sc_pc, sc->sc_tag, OPTI_REG_ENH_MODE, rv);
   4833 	}
   4834 
   4835 	/* Finally, enable the timings */
   4836 	opti_write_config(chp, OPTI_REG_CONTROL, OPTI_CONTROL_ENABLE);
   4837 }
   4838 
   4839 #define	ACARD_IS_850(sc)						\
   4840 	((sc)->sc_pp->ide_product == PCI_PRODUCT_ACARD_ATP850U)
   4841 
   4842 void
   4843 acard_chip_map(sc, pa)
   4844 	struct pciide_softc *sc;
   4845 	struct pci_attach_args *pa;
   4846 {
   4847 	struct pciide_channel *cp;
   4848 	int i;
   4849 	pcireg_t interface;
   4850 	bus_size_t cmdsize, ctlsize;
   4851 
   4852 	if (pciide_chipen(sc, pa) == 0)
   4853 		return;
   4854 
   4855 	/*
   4856 	 * when the chip is in native mode it identifies itself as a
   4857 	 * 'misc mass storage'. Fake interface in this case.
   4858 	 */
   4859 	if (PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_MASS_STORAGE_IDE) {
   4860 		interface = PCI_INTERFACE(pa->pa_class);
   4861 	} else {
   4862 		interface = PCIIDE_INTERFACE_BUS_MASTER_DMA |
   4863 		    PCIIDE_INTERFACE_PCI(0) | PCIIDE_INTERFACE_PCI(1);
   4864 	}
   4865 
   4866 	aprint_normal("%s: bus-master DMA support present",
   4867 	    sc->sc_wdcdev.sc_dev.dv_xname);
   4868 	pciide_mapreg_dma(sc, pa);
   4869 	aprint_normal("\n");
   4870 	sc->sc_wdcdev.cap = WDC_CAPABILITY_DATA16 | WDC_CAPABILITY_DATA32 |
   4871 	    WDC_CAPABILITY_MODE;
   4872 
   4873 	if (sc->sc_dma_ok) {
   4874 		sc->sc_wdcdev.cap |= WDC_CAPABILITY_DMA | WDC_CAPABILITY_UDMA;
   4875 		sc->sc_wdcdev.cap |= WDC_CAPABILITY_IRQACK;
   4876 		sc->sc_wdcdev.irqack = pciide_irqack;
   4877 	}
   4878 	sc->sc_wdcdev.PIO_cap = 4;
   4879 	sc->sc_wdcdev.DMA_cap = 2;
   4880 	sc->sc_wdcdev.UDMA_cap = ACARD_IS_850(sc) ? 2 : 4;
   4881 
   4882 	sc->sc_wdcdev.set_modes = acard_setup_channel;
   4883 	sc->sc_wdcdev.channels = sc->wdc_chanarray;
   4884 	sc->sc_wdcdev.nchannels = 2;
   4885 
   4886 	for (i = 0; i < sc->sc_wdcdev.nchannels; i++) {
   4887 		cp = &sc->pciide_channels[i];
   4888 		if (pciide_chansetup(sc, i, interface) == 0)
   4889 			continue;
   4890 		pciide_mapchan(pa, cp, interface, &cmdsize, &ctlsize,
   4891 		    pciide_pci_intr);
   4892 	}
   4893 	if (!ACARD_IS_850(sc)) {
   4894 		u_int32_t reg;
   4895 		reg = pci_conf_read(sc->sc_pc, sc->sc_tag, ATP8x0_CTRL);
   4896 		reg &= ~ATP860_CTRL_INT;
   4897 		pci_conf_write(sc->sc_pc, sc->sc_tag, ATP8x0_CTRL, reg);
   4898 	}
   4899 }
   4900 
   4901 void
   4902 acard_setup_channel(chp)
   4903 	struct channel_softc *chp;
   4904 {
   4905 	struct ata_drive_datas *drvp;
   4906 	struct pciide_channel *cp = (struct pciide_channel*)chp;
   4907 	struct pciide_softc *sc = (struct pciide_softc *)cp->wdc_channel.wdc;
   4908 	int channel = chp->channel;
   4909 	int drive;
   4910 	u_int32_t idetime, udma_mode;
   4911 	u_int32_t idedma_ctl;
   4912 
   4913 	/* setup DMA if needed */
   4914 	pciide_channel_dma_setup(cp);
   4915 
   4916 	if (ACARD_IS_850(sc)) {
   4917 		idetime = 0;
   4918 		udma_mode = pci_conf_read(sc->sc_pc, sc->sc_tag, ATP850_UDMA);
   4919 		udma_mode &= ~ATP850_UDMA_MASK(channel);
   4920 	} else {
   4921 		idetime = pci_conf_read(sc->sc_pc, sc->sc_tag, ATP860_IDETIME);
   4922 		idetime &= ~ATP860_SETTIME_MASK(channel);
   4923 		udma_mode = pci_conf_read(sc->sc_pc, sc->sc_tag, ATP860_UDMA);
   4924 		udma_mode &= ~ATP860_UDMA_MASK(channel);
   4925 
   4926 		/* check 80 pins cable */
   4927 		if ((chp->ch_drive[0].drive_flags & DRIVE_UDMA) ||
   4928 		    (chp->ch_drive[1].drive_flags & DRIVE_UDMA)) {
   4929 			if (pci_conf_read(sc->sc_pc, sc->sc_tag, ATP8x0_CTRL)
   4930 			    & ATP860_CTRL_80P(chp->channel)) {
   4931 				if (chp->ch_drive[0].UDMA_mode > 2)
   4932 					chp->ch_drive[0].UDMA_mode = 2;
   4933 				if (chp->ch_drive[1].UDMA_mode > 2)
   4934 					chp->ch_drive[1].UDMA_mode = 2;
   4935 			}
   4936 		}
   4937 	}
   4938 
   4939 	idedma_ctl = 0;
   4940 
   4941 	/* Per drive settings */
   4942 	for (drive = 0; drive < 2; drive++) {
   4943 		drvp = &chp->ch_drive[drive];
   4944 		/* If no drive, skip */
   4945 		if ((drvp->drive_flags & DRIVE) == 0)
   4946 			continue;
   4947 		/* add timing values, setup DMA if needed */
   4948 		if ((chp->wdc->cap & WDC_CAPABILITY_UDMA) &&
   4949 		    (drvp->drive_flags & DRIVE_UDMA)) {
   4950 			/* use Ultra/DMA */
   4951 			if (ACARD_IS_850(sc)) {
   4952 				idetime |= ATP850_SETTIME(drive,
   4953 				    acard_act_udma[drvp->UDMA_mode],
   4954 				    acard_rec_udma[drvp->UDMA_mode]);
   4955 				udma_mode |= ATP850_UDMA_MODE(channel, drive,
   4956 				    acard_udma_conf[drvp->UDMA_mode]);
   4957 			} else {
   4958 				idetime |= ATP860_SETTIME(channel, drive,
   4959 				    acard_act_udma[drvp->UDMA_mode],
   4960 				    acard_rec_udma[drvp->UDMA_mode]);
   4961 				udma_mode |= ATP860_UDMA_MODE(channel, drive,
   4962 				    acard_udma_conf[drvp->UDMA_mode]);
   4963 			}
   4964 			idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
   4965 		} else if ((chp->wdc->cap & WDC_CAPABILITY_DMA) &&
   4966 		    (drvp->drive_flags & DRIVE_DMA)) {
   4967 			/* use Multiword DMA */
   4968 			drvp->drive_flags &= ~DRIVE_UDMA;
   4969 			if (ACARD_IS_850(sc)) {
   4970 				idetime |= ATP850_SETTIME(drive,
   4971 				    acard_act_dma[drvp->DMA_mode],
   4972 				    acard_rec_dma[drvp->DMA_mode]);
   4973 			} else {
   4974 				idetime |= ATP860_SETTIME(channel, drive,
   4975 				    acard_act_dma[drvp->DMA_mode],
   4976 				    acard_rec_dma[drvp->DMA_mode]);
   4977 			}
   4978 			idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
   4979 		} else {
   4980 			/* PIO only */
   4981 			drvp->drive_flags &= ~(DRIVE_UDMA | DRIVE_DMA);
   4982 			if (ACARD_IS_850(sc)) {
   4983 				idetime |= ATP850_SETTIME(drive,
   4984 				    acard_act_pio[drvp->PIO_mode],
   4985 				    acard_rec_pio[drvp->PIO_mode]);
   4986 			} else {
   4987 				idetime |= ATP860_SETTIME(channel, drive,
   4988 				    acard_act_pio[drvp->PIO_mode],
   4989 				    acard_rec_pio[drvp->PIO_mode]);
   4990 			}
   4991 		pci_conf_write(sc->sc_pc, sc->sc_tag, ATP8x0_CTRL,
   4992 		    pci_conf_read(sc->sc_pc, sc->sc_tag, ATP8x0_CTRL)
   4993 		    | ATP8x0_CTRL_EN(channel));
   4994 		}
   4995 	}
   4996 
   4997 	if (idedma_ctl != 0) {
   4998 		/* Add software bits in status register */
   4999 		bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   5000 		    IDEDMA_CTL + IDEDMA_SCH_OFFSET * channel, idedma_ctl);
   5001 	}
   5002 
   5003 	if (ACARD_IS_850(sc)) {
   5004 		pci_conf_write(sc->sc_pc, sc->sc_tag,
   5005 		    ATP850_IDETIME(channel), idetime);
   5006 		pci_conf_write(sc->sc_pc, sc->sc_tag, ATP850_UDMA, udma_mode);
   5007 	} else {
   5008 		pci_conf_write(sc->sc_pc, sc->sc_tag, ATP860_IDETIME, idetime);
   5009 		pci_conf_write(sc->sc_pc, sc->sc_tag, ATP860_UDMA, udma_mode);
   5010 	}
   5011 }
   5012 
   5013 int
   5014 acard_pci_intr(arg)
   5015 	void *arg;
   5016 {
   5017 	struct pciide_softc *sc = arg;
   5018 	struct pciide_channel *cp;
   5019 	struct channel_softc *wdc_cp;
   5020 	int rv = 0;
   5021 	int dmastat, i, crv;
   5022 
   5023 	for (i = 0; i < sc->sc_wdcdev.nchannels; i++) {
   5024 		dmastat = bus_space_read_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   5025 		    IDEDMA_CTL + IDEDMA_SCH_OFFSET * i);
   5026 		if ((dmastat & IDEDMA_CTL_INTR) == 0)
   5027 			continue;
   5028 		cp = &sc->pciide_channels[i];
   5029 		wdc_cp = &cp->wdc_channel;
   5030 		if ((wdc_cp->ch_flags & WDCF_IRQ_WAIT) == 0) {
   5031 			(void)wdcintr(wdc_cp);
   5032 			bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   5033 			    IDEDMA_CTL + IDEDMA_SCH_OFFSET * i, dmastat);
   5034 			continue;
   5035 		}
   5036 		crv = wdcintr(wdc_cp);
   5037 		if (crv == 0)
   5038 			printf("%s:%d: bogus intr\n",
   5039 			    sc->sc_wdcdev.sc_dev.dv_xname, i);
   5040 		else if (crv == 1)
   5041 			rv = 1;
   5042 		else if (rv == 0)
   5043 			rv = crv;
   5044 	}
   5045 	return rv;
   5046 }
   5047 
   5048 static int
   5049 sl82c105_bugchk(struct pci_attach_args *pa)
   5050 {
   5051 
   5052 	if (PCI_VENDOR(pa->pa_id) != PCI_VENDOR_WINBOND ||
   5053 	    PCI_PRODUCT(pa->pa_id) != PCI_PRODUCT_WINBOND_W83C553F_0)
   5054 		return (0);
   5055 
   5056 	if (PCI_REVISION(pa->pa_class) <= 0x05)
   5057 		return (1);
   5058 
   5059 	return (0);
   5060 }
   5061 
   5062 void
   5063 sl82c105_chip_map(sc, pa)
   5064 	struct pciide_softc *sc;
   5065 	struct pci_attach_args *pa;
   5066 {
   5067 	struct pciide_channel *cp;
   5068 	bus_size_t cmdsize, ctlsize;
   5069 	pcireg_t interface, idecr;
   5070 	int channel;
   5071 
   5072 	if (pciide_chipen(sc, pa) == 0)
   5073 		return;
   5074 
   5075 	aprint_normal("%s: bus-master DMA support present",
   5076 	    sc->sc_wdcdev.sc_dev.dv_xname);
   5077 
   5078 	/*
   5079 	 * Check to see if we're part of the Winbond 83c553 Southbridge.
   5080 	 * If so, we need to disable DMA on rev. <= 5 of that chip.
   5081 	 */
   5082 	if (pci_find_device(pa, sl82c105_bugchk)) {
   5083 		aprint_normal(" but disabled due to 83c553 rev. <= 0x05");
   5084 		sc->sc_dma_ok = 0;
   5085 	} else
   5086 		pciide_mapreg_dma(sc, pa);
   5087 	aprint_normal("\n");
   5088 
   5089 	sc->sc_wdcdev.cap = WDC_CAPABILITY_DATA32 | WDC_CAPABILITY_DATA16 |
   5090 	    WDC_CAPABILITY_MODE;
   5091 	sc->sc_wdcdev.PIO_cap = 4;
   5092 	if (sc->sc_dma_ok) {
   5093 		sc->sc_wdcdev.cap |= WDC_CAPABILITY_DMA | WDC_CAPABILITY_IRQACK;
   5094 		sc->sc_wdcdev.irqack = pciide_irqack;
   5095 		sc->sc_wdcdev.DMA_cap = 2;
   5096 	}
   5097 	sc->sc_wdcdev.set_modes = sl82c105_setup_channel;
   5098 
   5099 	sc->sc_wdcdev.channels = sc->wdc_chanarray;
   5100 	sc->sc_wdcdev.nchannels = PCIIDE_NUM_CHANNELS;
   5101 
   5102 	idecr = pci_conf_read(sc->sc_pc, sc->sc_tag, SYMPH_IDECSR);
   5103 
   5104 	interface = PCI_INTERFACE(pa->pa_class);
   5105 
   5106 	for (channel = 0; channel < sc->sc_wdcdev.nchannels; channel++) {
   5107 		cp = &sc->pciide_channels[channel];
   5108 		if (pciide_chansetup(sc, channel, interface) == 0)
   5109 			continue;
   5110 		if ((channel == 0 && (idecr & IDECR_P0EN) == 0) ||
   5111 		    (channel == 1 && (idecr & IDECR_P1EN) == 0)) {
   5112 			aprint_normal("%s: %s channel ignored (disabled)\n",
   5113 			    sc->sc_wdcdev.sc_dev.dv_xname, cp->name);
   5114 			cp->wdc_channel.ch_flags |= WDCF_DISABLED;
   5115 			continue;
   5116 		}
   5117 		pciide_mapchan(pa, cp, interface, &cmdsize, &ctlsize,
   5118 		    pciide_pci_intr);
   5119 	}
   5120 }
   5121 
   5122 void
   5123 sl82c105_setup_channel(chp)
   5124 	struct channel_softc *chp;
   5125 {
   5126 	struct ata_drive_datas *drvp;
   5127 	struct pciide_channel *cp = (struct pciide_channel*)chp;
   5128 	struct pciide_softc *sc = (struct pciide_softc *)cp->wdc_channel.wdc;
   5129 	int pxdx_reg, drive;
   5130 	pcireg_t pxdx;
   5131 
   5132 	/* Set up DMA if needed. */
   5133 	pciide_channel_dma_setup(cp);
   5134 
   5135 	for (drive = 0; drive < 2; drive++) {
   5136 		pxdx_reg = ((chp->channel == 0) ? SYMPH_P0D0CR
   5137 						: SYMPH_P1D0CR) + (drive * 4);
   5138 
   5139 		pxdx = pci_conf_read(sc->sc_pc, sc->sc_tag, pxdx_reg);
   5140 
   5141 		pxdx &= ~(PxDx_CMD_ON_MASK|PxDx_CMD_OFF_MASK);
   5142 		pxdx &= ~(PxDx_PWEN|PxDx_RDYEN|PxDx_RAEN);
   5143 
   5144 		drvp = &chp->ch_drive[drive];
   5145 		/* If no drive, skip. */
   5146 		if ((drvp->drive_flags & DRIVE) == 0) {
   5147 			pci_conf_write(sc->sc_pc, sc->sc_tag, pxdx_reg, pxdx);
   5148 			continue;
   5149 		}
   5150 
   5151 		if (drvp->drive_flags & DRIVE_DMA) {
   5152 			/*
   5153 			 * Timings will be used for both PIO and DMA,
   5154 			 * so adjust DMA mode if needed.
   5155 			 */
   5156 			if (drvp->PIO_mode >= 3) {
   5157 				if ((drvp->DMA_mode + 2) > drvp->PIO_mode)
   5158 					drvp->DMA_mode = drvp->PIO_mode - 2;
   5159 				if (drvp->DMA_mode < 1) {
   5160 					/*
   5161 					 * Can't mix both PIO and DMA.
   5162 					 * Disable DMA.
   5163 					 */
   5164 					drvp->drive_flags &= ~DRIVE_DMA;
   5165 				}
   5166 			} else {
   5167 				/*
   5168 				 * Can't mix both PIO and DMA.  Disable
   5169 				 * DMA.
   5170 				 */
   5171 				drvp->drive_flags &= ~DRIVE_DMA;
   5172 			}
   5173 		}
   5174 
   5175 		if (drvp->drive_flags & DRIVE_DMA) {
   5176 			/* Use multi-word DMA. */
   5177 			pxdx |= symph_mw_dma_times[drvp->DMA_mode].cmd_on <<
   5178 			    PxDx_CMD_ON_SHIFT;
   5179 			pxdx |= symph_mw_dma_times[drvp->DMA_mode].cmd_off;
   5180 		} else {
   5181 			pxdx |= symph_pio_times[drvp->PIO_mode].cmd_on <<
   5182 			    PxDx_CMD_ON_SHIFT;
   5183 			pxdx |= symph_pio_times[drvp->PIO_mode].cmd_off;
   5184 		}
   5185 
   5186 		/* XXX PxDx_PWEN? PxDx_RDYEN? PxDx_RAEN? */
   5187 
   5188 		/* ...and set the mode for this drive. */
   5189 		pci_conf_write(sc->sc_pc, sc->sc_tag, pxdx_reg, pxdx);
   5190 	}
   5191 }
   5192 
   5193 void
   5194 serverworks_chip_map(sc, pa)
   5195 	struct pciide_softc *sc;
   5196 	struct pci_attach_args *pa;
   5197 {
   5198 	struct pciide_channel *cp;
   5199 	pcireg_t interface = PCI_INTERFACE(pa->pa_class);
   5200 	pcitag_t pcib_tag;
   5201 	int channel;
   5202 	bus_size_t cmdsize, ctlsize;
   5203 
   5204 	if (pciide_chipen(sc, pa) == 0)
   5205 		return;
   5206 
   5207 	aprint_normal("%s: bus-master DMA support present",
   5208 	    sc->sc_wdcdev.sc_dev.dv_xname);
   5209 	pciide_mapreg_dma(sc, pa);
   5210 	aprint_normal("\n");
   5211 	sc->sc_wdcdev.cap = WDC_CAPABILITY_DATA16 | WDC_CAPABILITY_DATA32 |
   5212 	    WDC_CAPABILITY_MODE;
   5213 
   5214 	if (sc->sc_dma_ok) {
   5215 		sc->sc_wdcdev.cap |= WDC_CAPABILITY_DMA | WDC_CAPABILITY_UDMA;
   5216 		sc->sc_wdcdev.cap |= WDC_CAPABILITY_IRQACK;
   5217 		sc->sc_wdcdev.irqack = pciide_irqack;
   5218 	}
   5219 	sc->sc_wdcdev.PIO_cap = 4;
   5220 	sc->sc_wdcdev.DMA_cap = 2;
   5221 	switch (sc->sc_pp->ide_product) {
   5222 	case PCI_PRODUCT_SERVERWORKS_OSB4_IDE:
   5223 		sc->sc_wdcdev.UDMA_cap = 2;
   5224 		break;
   5225 	case PCI_PRODUCT_SERVERWORKS_CSB5_IDE:
   5226 		if (PCI_REVISION(pa->pa_class) < 0x92)
   5227 			sc->sc_wdcdev.UDMA_cap = 4;
   5228 		else
   5229 			sc->sc_wdcdev.UDMA_cap = 5;
   5230 		break;
   5231 	case PCI_PRODUCT_SERVERWORKS_CSB6_IDE:
   5232 		sc->sc_wdcdev.UDMA_cap = 5;
   5233 		break;
   5234 	}
   5235 
   5236 	sc->sc_wdcdev.set_modes = serverworks_setup_channel;
   5237 	sc->sc_wdcdev.channels = sc->wdc_chanarray;
   5238 	sc->sc_wdcdev.nchannels = 2;
   5239 
   5240 	for (channel = 0; channel < sc->sc_wdcdev.nchannels; channel++) {
   5241 		cp = &sc->pciide_channels[channel];
   5242 		if (pciide_chansetup(sc, channel, interface) == 0)
   5243 			continue;
   5244 		pciide_mapchan(pa, cp, interface, &cmdsize, &ctlsize,
   5245 		    serverworks_pci_intr);
   5246 	}
   5247 
   5248 	pcib_tag = pci_make_tag(pa->pa_pc, pa->pa_bus, pa->pa_device, 0);
   5249 	pci_conf_write(pa->pa_pc, pcib_tag, 0x64,
   5250 	    (pci_conf_read(pa->pa_pc, pcib_tag, 0x64) & ~0x2000) | 0x4000);
   5251 }
   5252 
   5253 void
   5254 serverworks_setup_channel(chp)
   5255 	struct channel_softc *chp;
   5256 {
   5257 	struct ata_drive_datas *drvp;
   5258 	struct pciide_channel *cp = (struct pciide_channel*)chp;
   5259 	struct pciide_softc *sc = (struct pciide_softc *)cp->wdc_channel.wdc;
   5260 	int channel = chp->channel;
   5261 	int drive, unit;
   5262 	u_int32_t pio_time, dma_time, pio_mode, udma_mode;
   5263 	u_int32_t idedma_ctl;
   5264 	static const u_int8_t pio_modes[5] = {0x5d, 0x47, 0x34, 0x22, 0x20};
   5265 	static const u_int8_t dma_modes[3] = {0x77, 0x21, 0x20};
   5266 
   5267 	/* setup DMA if needed */
   5268 	pciide_channel_dma_setup(cp);
   5269 
   5270 	pio_time = pci_conf_read(sc->sc_pc, sc->sc_tag, 0x40);
   5271 	dma_time = pci_conf_read(sc->sc_pc, sc->sc_tag, 0x44);
   5272 	pio_mode = pci_conf_read(sc->sc_pc, sc->sc_tag, 0x48);
   5273 	udma_mode = pci_conf_read(sc->sc_pc, sc->sc_tag, 0x54);
   5274 
   5275 	pio_time &= ~(0xffff << (16 * channel));
   5276 	dma_time &= ~(0xffff << (16 * channel));
   5277 	pio_mode &= ~(0xff << (8 * channel + 16));
   5278 	udma_mode &= ~(0xff << (8 * channel + 16));
   5279 	udma_mode &= ~(3 << (2 * channel));
   5280 
   5281 	idedma_ctl = 0;
   5282 
   5283 	/* Per drive settings */
   5284 	for (drive = 0; drive < 2; drive++) {
   5285 		drvp = &chp->ch_drive[drive];
   5286 		/* If no drive, skip */
   5287 		if ((drvp->drive_flags & DRIVE) == 0)
   5288 			continue;
   5289 		unit = drive + 2 * channel;
   5290 		/* add timing values, setup DMA if needed */
   5291 		pio_time |= pio_modes[drvp->PIO_mode] << (8 * (unit^1));
   5292 		pio_mode |= drvp->PIO_mode << (4 * unit + 16);
   5293 		if ((chp->wdc->cap & WDC_CAPABILITY_UDMA) &&
   5294 		    (drvp->drive_flags & DRIVE_UDMA)) {
   5295 			/* use Ultra/DMA, check for 80-pin cable */
   5296 			if (drvp->UDMA_mode > 2 &&
   5297 			    (PCI_PRODUCT(pci_conf_read(sc->sc_pc, sc->sc_tag, PCI_SUBSYS_ID_REG)) & (1 << (14 + channel))) == 0)
   5298 				drvp->UDMA_mode = 2;
   5299 			dma_time |= dma_modes[drvp->DMA_mode] << (8 * (unit^1));
   5300 			udma_mode |= drvp->UDMA_mode << (4 * unit + 16);
   5301 			udma_mode |= 1 << unit;
   5302 			idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
   5303 		} else if ((chp->wdc->cap & WDC_CAPABILITY_DMA) &&
   5304 		    (drvp->drive_flags & DRIVE_DMA)) {
   5305 			/* use Multiword DMA */
   5306 			drvp->drive_flags &= ~DRIVE_UDMA;
   5307 			dma_time |= dma_modes[drvp->DMA_mode] << (8 * (unit^1));
   5308 			idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
   5309 		} else {
   5310 			/* PIO only */
   5311 			drvp->drive_flags &= ~(DRIVE_UDMA | DRIVE_DMA);
   5312 		}
   5313 	}
   5314 
   5315 	pci_conf_write(sc->sc_pc, sc->sc_tag, 0x40, pio_time);
   5316 	pci_conf_write(sc->sc_pc, sc->sc_tag, 0x44, dma_time);
   5317 	if (sc->sc_pp->ide_product != PCI_PRODUCT_SERVERWORKS_OSB4_IDE)
   5318 		pci_conf_write(sc->sc_pc, sc->sc_tag, 0x48, pio_mode);
   5319 	pci_conf_write(sc->sc_pc, sc->sc_tag, 0x54, udma_mode);
   5320 
   5321 	if (idedma_ctl != 0) {
   5322 		/* Add software bits in status register */
   5323 		bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   5324 		    IDEDMA_CTL + IDEDMA_SCH_OFFSET * channel, idedma_ctl);
   5325 	}
   5326 }
   5327 
   5328 int
   5329 serverworks_pci_intr(arg)
   5330 	void *arg;
   5331 {
   5332 	struct pciide_softc *sc = arg;
   5333 	struct pciide_channel *cp;
   5334 	struct channel_softc *wdc_cp;
   5335 	int rv = 0;
   5336 	int dmastat, i, crv;
   5337 
   5338 	for (i = 0; i < sc->sc_wdcdev.nchannels; i++) {
   5339 		dmastat = bus_space_read_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   5340 		    IDEDMA_CTL + IDEDMA_SCH_OFFSET * i);
   5341 		if ((dmastat & (IDEDMA_CTL_ACT | IDEDMA_CTL_INTR)) !=
   5342 		    IDEDMA_CTL_INTR)
   5343 			continue;
   5344 		cp = &sc->pciide_channels[i];
   5345 		wdc_cp = &cp->wdc_channel;
   5346 		crv = wdcintr(wdc_cp);
   5347 		if (crv == 0) {
   5348 			printf("%s:%d: bogus intr\n",
   5349 			    sc->sc_wdcdev.sc_dev.dv_xname, i);
   5350 			bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
   5351 			    IDEDMA_CTL + IDEDMA_SCH_OFFSET * i, dmastat);
   5352 		} else
   5353 			rv = 1;
   5354 	}
   5355 	return rv;
   5356 }
   5357 
   5358 void
   5359 artisea_chip_map(sc, pa)
   5360 	struct pciide_softc *sc;
   5361 	struct pci_attach_args *pa;
   5362 {
   5363 	struct pciide_channel *cp;
   5364 	bus_size_t cmdsize, ctlsize;
   5365 	pcireg_t interface;
   5366 	int channel;
   5367 
   5368 	if (pciide_chipen(sc, pa) == 0)
   5369 		return;
   5370 
   5371 	aprint_normal("%s: bus-master DMA support present",
   5372 	    sc->sc_wdcdev.sc_dev.dv_xname);
   5373 #ifndef PCIIDE_I31244_ENABLEDMA
   5374 	if (sc->sc_pp->ide_product == PCI_PRODUCT_INTEL_31244 &&
   5375 	    PCI_REVISION(pa->pa_class) == 0) {
   5376 		aprint_normal(" but disabled due to rev. 0");
   5377 		sc->sc_dma_ok = 0;
   5378 	} else
   5379 #endif
   5380 		pciide_mapreg_dma(sc, pa);
   5381 	aprint_normal("\n");
   5382 
   5383 	/*
   5384 	 * XXX Configure LEDs to show activity.
   5385 	 */
   5386 
   5387 	sc->sc_wdcdev.cap |= WDC_CAPABILITY_DATA16 | WDC_CAPABILITY_DATA32 |
   5388 	    WDC_CAPABILITY_MODE;
   5389 	sc->sc_wdcdev.PIO_cap = 4;
   5390 	if (sc->sc_dma_ok) {
   5391 		sc->sc_wdcdev.cap |= WDC_CAPABILITY_DMA | WDC_CAPABILITY_UDMA;
   5392 		sc->sc_wdcdev.cap |= WDC_CAPABILITY_IRQACK;
   5393 		sc->sc_wdcdev.irqack = pciide_irqack;
   5394 		sc->sc_wdcdev.DMA_cap = 2;
   5395 		sc->sc_wdcdev.UDMA_cap = 6;
   5396 	}
   5397 	sc->sc_wdcdev.set_modes = sata_setup_channel;
   5398 
   5399 	sc->sc_wdcdev.channels = sc->wdc_chanarray;
   5400 	sc->sc_wdcdev.nchannels = PCIIDE_NUM_CHANNELS;
   5401 
   5402 	interface = PCI_INTERFACE(pa->pa_class);
   5403 
   5404 	for (channel = 0; channel < sc->sc_wdcdev.nchannels; channel++) {
   5405 		cp = &sc->pciide_channels[channel];
   5406 		if (pciide_chansetup(sc, channel, interface) == 0)
   5407 			continue;
   5408 		pciide_mapchan(pa, cp, interface, &cmdsize, &ctlsize,
   5409 		    pciide_pci_intr);
   5410 	}
   5411 }
   5412