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viaide.c revision 1.71
      1 /*	$NetBSD: viaide.c,v 1.71 2010/11/06 01:24:55 jakllsch Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1999, 2000, 2001 Manuel Bouyer.
      5  *
      6  * Redistribution and use in source and binary forms, with or without
      7  * modification, are permitted provided that the following conditions
      8  * are met:
      9  * 1. Redistributions of source code must retain the above copyright
     10  *    notice, this list of conditions and the following disclaimer.
     11  * 2. Redistributions in binary form must reproduce the above copyright
     12  *    notice, this list of conditions and the following disclaimer in the
     13  *    documentation and/or other materials provided with the distribution.
     14  *
     15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     16  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     17  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     18  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     19  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     20  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     21  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     22  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     24  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     25  *
     26  */
     27 
     28 #include <sys/cdefs.h>
     29 __KERNEL_RCSID(0, "$NetBSD: viaide.c,v 1.71 2010/11/06 01:24:55 jakllsch Exp $");
     30 
     31 #include <sys/param.h>
     32 #include <sys/systm.h>
     33 
     34 #include <dev/pci/pcivar.h>
     35 #include <dev/pci/pcidevs.h>
     36 #include <dev/pci/pciidereg.h>
     37 #include <dev/pci/pciidevar.h>
     38 #include <dev/pci/pciide_apollo_reg.h>
     39 
     40 static int	via_pcib_match(struct pci_attach_args *);
     41 static void	via_chip_map(struct pciide_softc *, struct pci_attach_args *);
     42 static void	via_mapchan(struct pci_attach_args *, struct pciide_channel *,
     43 		    pcireg_t, int (*)(void *));
     44 static void	via_mapregs_compat_native(struct pci_attach_args *,
     45 		    struct pciide_channel *);
     46 static int	via_sata_chip_map_common(struct pciide_softc *,
     47 		    struct pci_attach_args *);
     48 static void	via_sata_chip_map(struct pciide_softc *,
     49 		    struct pci_attach_args *, int);
     50 static void	via_sata_chip_map_6(struct pciide_softc *,
     51 		    struct pci_attach_args *);
     52 static void	via_sata_chip_map_7(struct pciide_softc *,
     53 		    struct pci_attach_args *);
     54 static void	via_sata_chip_map_new(struct pciide_softc *,
     55 		    struct pci_attach_args *);
     56 static void	via_setup_channel(struct ata_channel *);
     57 
     58 static int	viaide_match(device_t, cfdata_t, void *);
     59 static void	viaide_attach(device_t, device_t, void *);
     60 static const struct pciide_product_desc *
     61 		viaide_lookup(pcireg_t);
     62 static bool	viaide_suspend(device_t, const pmf_qual_t *);
     63 static bool	viaide_resume(device_t, const pmf_qual_t *);
     64 
     65 CFATTACH_DECL_NEW(viaide, sizeof(struct pciide_softc),
     66     viaide_match, viaide_attach, pciide_detach, NULL);
     67 
     68 static const struct pciide_product_desc pciide_amd_products[] =  {
     69 	{ PCI_PRODUCT_AMD_PBC756_IDE,
     70 	  0,
     71 	  "AMD AMD756 IDE Controller",
     72 	  via_chip_map
     73 	},
     74 	{ PCI_PRODUCT_AMD_PBC766_IDE,
     75 	  0,
     76 	  "AMD AMD766 IDE Controller",
     77 	  via_chip_map
     78 	},
     79 	{ PCI_PRODUCT_AMD_PBC768_IDE,
     80 	  0,
     81 	  "AMD AMD768 IDE Controller",
     82 	  via_chip_map
     83 	},
     84 	{ PCI_PRODUCT_AMD_PBC8111_IDE,
     85 	  0,
     86 	  "AMD AMD8111 IDE Controller",
     87 	  via_chip_map
     88 	},
     89 	{ PCI_PRODUCT_AMD_CS5536_IDE,
     90 	  0,
     91 	  "AMD CS5536 IDE Controller",
     92 	  via_chip_map
     93 	},
     94 	{ 0,
     95 	  0,
     96 	  NULL,
     97 	  NULL
     98 	}
     99 };
    100 
    101 static const struct pciide_product_desc pciide_nvidia_products[] = {
    102 	{ PCI_PRODUCT_NVIDIA_NFORCE_ATA100,
    103 	  0,
    104 	  "NVIDIA nForce IDE Controller",
    105 	  via_chip_map
    106 	},
    107 	{ PCI_PRODUCT_NVIDIA_NFORCE2_ATA133,
    108 	  0,
    109 	  "NVIDIA nForce2 IDE Controller",
    110 	  via_chip_map
    111 	},
    112 	{ PCI_PRODUCT_NVIDIA_NFORCE2_400_ATA133,
    113 	  0,
    114 	  "NVIDIA nForce2 Ultra 400 IDE Controller",
    115 	  via_chip_map
    116 	},
    117 	{ PCI_PRODUCT_NVIDIA_NFORCE2_400_SATA,
    118 	  0,
    119 	  "NVIDIA nForce2 Ultra 400 Serial ATA Controller",
    120 	  via_sata_chip_map_6
    121 	},
    122 	{ PCI_PRODUCT_NVIDIA_NFORCE3_ATA133,
    123 	  0,
    124 	  "NVIDIA nForce3 IDE Controller",
    125 	  via_chip_map
    126 	},
    127 	{ PCI_PRODUCT_NVIDIA_NFORCE3_250_ATA133,
    128 	  0,
    129 	  "NVIDIA nForce3 250 IDE Controller",
    130 	  via_chip_map
    131 	},
    132 	{ PCI_PRODUCT_NVIDIA_NFORCE3_250_SATA,
    133 	  0,
    134 	  "NVIDIA nForce3 250 Serial ATA Controller",
    135 	  via_sata_chip_map_6
    136 	},
    137 	{ PCI_PRODUCT_NVIDIA_NFORCE3_250_SATA2,
    138 	  0,
    139 	  "NVIDIA nForce3 250 Serial ATA Controller",
    140 	  via_sata_chip_map_6
    141 	},
    142 	{ PCI_PRODUCT_NVIDIA_NFORCE4_ATA133,
    143 	  0,
    144 	  "NVIDIA nForce4 IDE Controller",
    145 	  via_chip_map
    146 	},
    147 	{ PCI_PRODUCT_NVIDIA_NFORCE4_SATA1,
    148 	  0,
    149 	  "NVIDIA nForce4 Serial ATA Controller",
    150 	  via_sata_chip_map_6
    151 	},
    152 	{ PCI_PRODUCT_NVIDIA_NFORCE4_SATA2,
    153 	  0,
    154 	  "NVIDIA nForce4 Serial ATA Controller",
    155 	  via_sata_chip_map_6
    156 	},
    157 	{ PCI_PRODUCT_NVIDIA_NFORCE430_ATA133,
    158 	  0,
    159 	  "NVIDIA nForce430 IDE Controller",
    160 	  via_chip_map
    161 	},
    162 	{ PCI_PRODUCT_NVIDIA_NFORCE430_SATA1,
    163 	  0,
    164 	  "NVIDIA nForce430 Serial ATA Controller",
    165 	  via_sata_chip_map_6
    166 	},
    167 	{ PCI_PRODUCT_NVIDIA_NFORCE430_SATA2,
    168 	  0,
    169 	  "NVIDIA nForce430 Serial ATA Controller",
    170 	  via_sata_chip_map_6
    171 	},
    172 	{ PCI_PRODUCT_NVIDIA_MCP04_IDE,
    173 	  0,
    174 	  "NVIDIA MCP04 IDE Controller",
    175 	  via_chip_map
    176 	},
    177 	{ PCI_PRODUCT_NVIDIA_MCP04_SATA,
    178 	  0,
    179 	  "NVIDIA MCP04 Serial ATA Controller",
    180 	  via_sata_chip_map_6
    181 	},
    182 	{ PCI_PRODUCT_NVIDIA_MCP04_SATA2,
    183 	  0,
    184 	  "NVIDIA MCP04 Serial ATA Controller",
    185 	  via_sata_chip_map_6
    186 	},
    187 	{ PCI_PRODUCT_NVIDIA_MCP55_IDE,
    188 	  0,
    189 	  "NVIDIA MCP55 IDE Controller",
    190 	  via_chip_map
    191 	},
    192 	{ PCI_PRODUCT_NVIDIA_MCP55_SATA,
    193 	  0,
    194 	  "NVIDIA MCP55 Serial ATA Controller",
    195 	  via_sata_chip_map_6
    196 	},
    197 	{ PCI_PRODUCT_NVIDIA_MCP55_SATA2,
    198 	  0,
    199 	  "NVIDIA MCP55 Serial ATA Controller",
    200 	  via_sata_chip_map_6
    201 	},
    202 	{ PCI_PRODUCT_NVIDIA_MCP61_IDE,
    203 	  0,
    204 	  "NVIDIA MCP61 IDE Controller",
    205 	  via_chip_map
    206 	},
    207 	{ PCI_PRODUCT_NVIDIA_MCP65_IDE,
    208 	  0,
    209 	  "NVIDIA MCP65 IDE Controller",
    210 	  via_chip_map
    211 	},
    212 	{ PCI_PRODUCT_NVIDIA_MCP73_IDE,
    213 	  0,
    214 	  "NVIDIA MCP73 IDE Controller",
    215 	  via_chip_map
    216 	},
    217 	{ PCI_PRODUCT_NVIDIA_MCP77_IDE,
    218 	  0,
    219 	  "NVIDIA MCP77 IDE Controller",
    220 	  via_chip_map
    221 	},
    222 	{ PCI_PRODUCT_NVIDIA_MCP61_SATA,
    223 	  0,
    224 	  "NVIDIA MCP61 Serial ATA Controller",
    225 	  via_sata_chip_map_6
    226 	},
    227 	{ PCI_PRODUCT_NVIDIA_MCP61_SATA2,
    228 	  0,
    229 	  "NVIDIA MCP61 Serial ATA Controller",
    230 	  via_sata_chip_map_6
    231 	},
    232 	{ PCI_PRODUCT_NVIDIA_MCP61_SATA3,
    233 	  0,
    234 	  "NVIDIA MCP61 Serial ATA Controller",
    235 	  via_sata_chip_map_6
    236 	},
    237 	{ PCI_PRODUCT_NVIDIA_MCP65_SATA,
    238 	  0,
    239 	  "NVIDIA MCP65 Serial ATA Controller",
    240 	  via_sata_chip_map_6
    241 	},
    242 	{ PCI_PRODUCT_NVIDIA_MCP65_SATA2,
    243 	  0,
    244 	  "NVIDIA MCP65 Serial ATA Controller",
    245 	  via_sata_chip_map_6
    246 	},
    247 	{ PCI_PRODUCT_NVIDIA_MCP65_SATA3,
    248 	  0,
    249 	  "NVIDIA MCP65 Serial ATA Controller",
    250 	  via_sata_chip_map_6
    251 	},
    252 	{ PCI_PRODUCT_NVIDIA_MCP65_SATA4,
    253 	  0,
    254 	  "NVIDIA MCP65 Serial ATA Controller",
    255 	  via_sata_chip_map_6
    256 	},
    257 	{ PCI_PRODUCT_NVIDIA_MCP67_IDE,
    258 	  0,
    259 	  "NVIDIA MCP67 IDE Controller",
    260 	  via_chip_map,
    261 	},
    262 	{ PCI_PRODUCT_NVIDIA_MCP67_SATA,
    263 	  0,
    264 	  "NVIDIA MCP67 Serial ATA Controller",
    265 	  via_sata_chip_map_6,
    266 	},
    267 	{ PCI_PRODUCT_NVIDIA_MCP67_SATA2,
    268 	  0,
    269 	  "NVIDIA MCP67 Serial ATA Controller",
    270 	  via_sata_chip_map_6,
    271 	},
    272 	{ PCI_PRODUCT_NVIDIA_MCP67_SATA3,
    273 	  0,
    274 	  "NVIDIA MCP67 Serial ATA Controller",
    275 	  via_sata_chip_map_6,
    276 	},
    277 	{ PCI_PRODUCT_NVIDIA_MCP67_SATA4,
    278 	  0,
    279 	  "NVIDIA MCP67 Serial ATA Controller",
    280 	  via_sata_chip_map_6,
    281 	},
    282 	{ 0,
    283 	  0,
    284 	  NULL,
    285 	  NULL
    286 	}
    287 };
    288 
    289 static const struct pciide_product_desc pciide_via_products[] =  {
    290 	{ PCI_PRODUCT_VIATECH_VT82C586_IDE,
    291 	  0,
    292 	  NULL,
    293 	  via_chip_map,
    294 	 },
    295 	{ PCI_PRODUCT_VIATECH_VT82C586A_IDE,
    296 	  0,
    297 	  NULL,
    298 	  via_chip_map,
    299 	},
    300 	{ PCI_PRODUCT_VIATECH_CX700_IDE,
    301 	  0,
    302 	  NULL,
    303 	  via_chip_map,
    304 	},
    305 	{ PCI_PRODUCT_VIATECH_CX700M2_IDE,
    306 	  0,
    307 	  NULL,
    308 	  via_chip_map,
    309 	},
    310 	{ PCI_PRODUCT_VIATECH_VT6421_RAID,
    311 	  0,
    312 	  "VIA Technologies VT6421 Serial RAID Controller",
    313 	  via_sata_chip_map_new,
    314 	},
    315 	{ PCI_PRODUCT_VIATECH_VT8237_SATA,
    316 	  0,
    317 	  "VIA Technologies VT8237 SATA Controller",
    318 	  via_sata_chip_map_7,
    319 	},
    320 	{ PCI_PRODUCT_VIATECH_VT8237A_SATA,
    321 	  0,
    322 	  "VIA Technologies VT8237A SATA Controller",
    323 	  via_sata_chip_map_7,
    324 	},
    325 	{ PCI_PRODUCT_VIATECH_VT8237A_SATA_2,
    326 	  0,
    327 	  "VIA Technologies VT8237A (5337) SATA Controller",
    328 	  via_sata_chip_map_7,
    329 	},
    330 	{ PCI_PRODUCT_VIATECH_VT8237R_SATA,
    331 	  0,
    332 	  "VIA Technologies VT8237R SATA Controller",
    333 	  via_sata_chip_map_7,
    334 	},
    335 	{ PCI_PRODUCT_VIATECH_VT8237S_SATA,
    336 	  0,
    337 	  "VIA Technologies VT8237S SATA Controller",
    338 	  via_sata_chip_map_7,
    339 	},
    340 	{ 0,
    341 	  0,
    342 	  NULL,
    343 	  NULL
    344 	}
    345 };
    346 
    347 static const struct pciide_product_desc *
    348 viaide_lookup(pcireg_t id)
    349 {
    350 
    351 	switch (PCI_VENDOR(id)) {
    352 	case PCI_VENDOR_VIATECH:
    353 		return (pciide_lookup_product(id, pciide_via_products));
    354 
    355 	case PCI_VENDOR_AMD:
    356 		return (pciide_lookup_product(id, pciide_amd_products));
    357 
    358 	case PCI_VENDOR_NVIDIA:
    359 		return (pciide_lookup_product(id, pciide_nvidia_products));
    360 	}
    361 	return (NULL);
    362 }
    363 
    364 static int
    365 viaide_match(device_t parent, cfdata_t match, void *aux)
    366 {
    367 	struct pci_attach_args *pa = aux;
    368 
    369 	if (viaide_lookup(pa->pa_id) != NULL)
    370 		return (2);
    371 	return (0);
    372 }
    373 
    374 static void
    375 viaide_attach(device_t parent, device_t self, void *aux)
    376 {
    377 	struct pci_attach_args *pa = aux;
    378 	struct pciide_softc *sc = device_private(self);
    379 	const struct pciide_product_desc *pp;
    380 
    381 	sc->sc_wdcdev.sc_atac.atac_dev = self;
    382 
    383 	pp = viaide_lookup(pa->pa_id);
    384 	if (pp == NULL)
    385 		panic("viaide_attach");
    386 	pciide_common_attach(sc, pa, pp);
    387 
    388 	if (!pmf_device_register(self, viaide_suspend, viaide_resume))
    389 		aprint_error_dev(self, "couldn't establish power handler\n");
    390 }
    391 
    392 static int
    393 via_pcib_match(struct pci_attach_args *pa)
    394 {
    395 	if (PCI_CLASS(pa->pa_class) == PCI_CLASS_BRIDGE &&
    396 	    PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_BRIDGE_ISA &&
    397 	    PCI_VENDOR(pa->pa_id) == PCI_VENDOR_VIATECH)
    398 		return (1);
    399 	return 0;
    400 }
    401 
    402 static bool
    403 viaide_suspend(device_t dv, const pmf_qual_t *qual)
    404 {
    405 	struct pciide_softc *sc = device_private(dv);
    406 
    407 	sc->sc_pm_reg[0] = pci_conf_read(sc->sc_pc, sc->sc_tag, APO_IDECONF(sc));
    408 	/* APO_DATATIM(sc) includes APO_UDMA(sc) */
    409 	sc->sc_pm_reg[1] = pci_conf_read(sc->sc_pc, sc->sc_tag, APO_DATATIM(sc));
    410 	/* This two are VIA-only, but should be ignored by other devices. */
    411 	sc->sc_pm_reg[2] = pci_conf_read(sc->sc_pc, sc->sc_tag, APO_CTLMISC(sc));
    412 	sc->sc_pm_reg[3] = pci_conf_read(sc->sc_pc, sc->sc_tag, APO_MISCTIM(sc));
    413 
    414 	return true;
    415 }
    416 
    417 static bool
    418 viaide_resume(device_t dv, const pmf_qual_t *qual)
    419 {
    420 	struct pciide_softc *sc = device_private(dv);
    421 
    422 	pci_conf_write(sc->sc_pc, sc->sc_tag, APO_IDECONF(sc),
    423 	    sc->sc_pm_reg[0]);
    424 	pci_conf_write(sc->sc_pc, sc->sc_tag, APO_DATATIM(sc),
    425 	    sc->sc_pm_reg[1]);
    426 	/* This two are VIA-only, but should be ignored by other devices. */
    427 	pci_conf_write(sc->sc_pc, sc->sc_tag, APO_CTLMISC(sc),
    428 	    sc->sc_pm_reg[2]);
    429 	pci_conf_write(sc->sc_pc, sc->sc_tag, APO_MISCTIM(sc),
    430 	    sc->sc_pm_reg[3]);
    431 
    432 	return true;
    433 }
    434 
    435 static void
    436 via_chip_map(struct pciide_softc *sc, struct pci_attach_args *pa)
    437 {
    438 	struct pciide_channel *cp;
    439 	pcireg_t interface = PCI_INTERFACE(pa->pa_class);
    440 	pcireg_t vendor = PCI_VENDOR(pa->pa_id);
    441 	int channel;
    442 	u_int32_t ideconf;
    443 	pcireg_t pcib_id, pcib_class;
    444 	struct pci_attach_args pcib_pa;
    445 
    446 	if (pciide_chipen(sc, pa) == 0)
    447 		return;
    448 
    449 	switch (vendor) {
    450 	case PCI_VENDOR_VIATECH:
    451 		/*
    452 		 * get a PCI tag for the ISA bridge.
    453 		 */
    454 		if (pci_find_device(&pcib_pa, via_pcib_match) == 0)
    455 			goto unknown;
    456 		pcib_id = pcib_pa.pa_id;
    457 		pcib_class = pcib_pa.pa_class;
    458 		aprint_normal_dev(sc->sc_wdcdev.sc_atac.atac_dev,
    459 		    "VIA Technologies ");
    460 		switch (PCI_PRODUCT(pcib_id)) {
    461 		case PCI_PRODUCT_VIATECH_VT82C586_ISA:
    462 			aprint_normal("VT82C586 (Apollo VP) ");
    463 			if(PCI_REVISION(pcib_class) >= 0x02) {
    464 				aprint_normal("ATA33 controller\n");
    465 				sc->sc_wdcdev.sc_atac.atac_udma_cap = 2;
    466 			} else {
    467 				aprint_normal("controller\n");
    468 				sc->sc_wdcdev.sc_atac.atac_udma_cap = 0;
    469 			}
    470 			break;
    471 		case PCI_PRODUCT_VIATECH_VT82C596A:
    472 			aprint_normal("VT82C596A (Apollo Pro) ");
    473 			if (PCI_REVISION(pcib_class) >= 0x12) {
    474 				aprint_normal("ATA66 controller\n");
    475 				sc->sc_wdcdev.sc_atac.atac_udma_cap = 4;
    476 			} else {
    477 				aprint_normal("ATA33 controller\n");
    478 				sc->sc_wdcdev.sc_atac.atac_udma_cap = 2;
    479 			}
    480 			break;
    481 		case PCI_PRODUCT_VIATECH_VT82C686A_ISA:
    482 			aprint_normal("VT82C686A (Apollo KX133) ");
    483 			if (PCI_REVISION(pcib_class) >= 0x40) {
    484 				aprint_normal("ATA100 controller\n");
    485 				sc->sc_wdcdev.sc_atac.atac_udma_cap = 5;
    486 			} else {
    487 				aprint_normal("ATA66 controller\n");
    488 				sc->sc_wdcdev.sc_atac.atac_udma_cap = 4;
    489 			}
    490 			break;
    491 		case PCI_PRODUCT_VIATECH_VT8231:
    492 			aprint_normal("VT8231 ATA100 controller\n");
    493 			sc->sc_wdcdev.sc_atac.atac_udma_cap = 5;
    494 			break;
    495 		case PCI_PRODUCT_VIATECH_VT8233:
    496 			aprint_normal("VT8233 ATA100 controller\n");
    497 			sc->sc_wdcdev.sc_atac.atac_udma_cap = 5;
    498 			break;
    499 		case PCI_PRODUCT_VIATECH_VT8233A:
    500 			aprint_normal("VT8233A ATA133 controller\n");
    501 			sc->sc_wdcdev.sc_atac.atac_udma_cap = 6;
    502 			break;
    503 		case PCI_PRODUCT_VIATECH_VT8235:
    504 			aprint_normal("VT8235 ATA133 controller\n");
    505 			sc->sc_wdcdev.sc_atac.atac_udma_cap = 6;
    506 			break;
    507 		case PCI_PRODUCT_VIATECH_VT8237:
    508 			aprint_normal("VT8237 ATA133 controller\n");
    509 			sc->sc_wdcdev.sc_atac.atac_udma_cap = 6;
    510 			break;
    511 		case PCI_PRODUCT_VIATECH_VT8237A_ISA:
    512 			aprint_normal("VT8237A ATA133 controller\n");
    513 			sc->sc_wdcdev.sc_atac.atac_udma_cap = 6;
    514 			break;
    515 		case PCI_PRODUCT_VIATECH_CX700:
    516 			aprint_normal("CX700 ATA133 controller\n");
    517 			sc->sc_wdcdev.sc_atac.atac_udma_cap = 6;
    518 			break;
    519 		case PCI_PRODUCT_VIATECH_VT8251:
    520 			aprint_normal("VT8251 ATA133 controller\n");
    521 			sc->sc_wdcdev.sc_atac.atac_udma_cap = 6;
    522 			break;
    523 		default:
    524 unknown:
    525 			aprint_normal("unknown VIA ATA controller\n");
    526 			sc->sc_wdcdev.sc_atac.atac_udma_cap = 0;
    527 		}
    528 		sc->sc_apo_regbase = APO_VIA_REGBASE;
    529 		break;
    530 	case PCI_VENDOR_AMD:
    531 		switch (sc->sc_pp->ide_product) {
    532 		case PCI_PRODUCT_AMD_PBC8111_IDE:
    533 			sc->sc_wdcdev.sc_atac.atac_udma_cap = 6;
    534 			break;
    535 		case PCI_PRODUCT_AMD_CS5536_IDE:
    536 		case PCI_PRODUCT_AMD_PBC766_IDE:
    537 		case PCI_PRODUCT_AMD_PBC768_IDE:
    538 			sc->sc_wdcdev.sc_atac.atac_udma_cap = 5;
    539 			break;
    540 		default:
    541 			sc->sc_wdcdev.sc_atac.atac_udma_cap = 4;
    542 		}
    543 		sc->sc_apo_regbase = APO_AMD_REGBASE;
    544 		break;
    545 	case PCI_VENDOR_NVIDIA:
    546 		switch (sc->sc_pp->ide_product) {
    547 		case PCI_PRODUCT_NVIDIA_NFORCE_ATA100:
    548 			sc->sc_wdcdev.sc_atac.atac_udma_cap = 5;
    549 			break;
    550 		case PCI_PRODUCT_NVIDIA_NFORCE2_ATA133:
    551 		case PCI_PRODUCT_NVIDIA_NFORCE2_400_ATA133:
    552 		case PCI_PRODUCT_NVIDIA_NFORCE3_ATA133:
    553 		case PCI_PRODUCT_NVIDIA_NFORCE3_250_ATA133:
    554 		case PCI_PRODUCT_NVIDIA_NFORCE4_ATA133:
    555 		case PCI_PRODUCT_NVIDIA_NFORCE430_ATA133:
    556 		case PCI_PRODUCT_NVIDIA_MCP04_IDE:
    557 		case PCI_PRODUCT_NVIDIA_MCP55_IDE:
    558 		case PCI_PRODUCT_NVIDIA_MCP61_IDE:
    559 		case PCI_PRODUCT_NVIDIA_MCP65_IDE:
    560 		case PCI_PRODUCT_NVIDIA_MCP67_IDE:
    561 		case PCI_PRODUCT_NVIDIA_MCP73_IDE:
    562 		case PCI_PRODUCT_NVIDIA_MCP77_IDE:
    563 			sc->sc_wdcdev.sc_atac.atac_udma_cap = 6;
    564 			break;
    565 		}
    566 		sc->sc_apo_regbase = APO_NVIDIA_REGBASE;
    567 		break;
    568 	default:
    569 		panic("via_chip_map: unknown vendor");
    570 	}
    571 
    572 	aprint_verbose_dev(sc->sc_wdcdev.sc_atac.atac_dev,
    573 	    "bus-master DMA support present");
    574 	pciide_mapreg_dma(sc, pa);
    575 	aprint_verbose("\n");
    576 	sc->sc_wdcdev.sc_atac.atac_cap = ATAC_CAP_DATA16 | ATAC_CAP_DATA32;
    577 	if (sc->sc_dma_ok) {
    578 		sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_DMA;
    579 		sc->sc_wdcdev.irqack = pciide_irqack;
    580 		if (sc->sc_wdcdev.sc_atac.atac_udma_cap > 0)
    581 			sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_UDMA;
    582 	}
    583 	sc->sc_wdcdev.sc_atac.atac_pio_cap = 4;
    584 	sc->sc_wdcdev.sc_atac.atac_dma_cap = 2;
    585 	sc->sc_wdcdev.sc_atac.atac_set_modes = via_setup_channel;
    586 	sc->sc_wdcdev.sc_atac.atac_channels = sc->wdc_chanarray;
    587 	sc->sc_wdcdev.sc_atac.atac_nchannels = PCIIDE_NUM_CHANNELS;
    588 
    589 	if (PCI_CLASS(pa->pa_class) == PCI_CLASS_MASS_STORAGE &&
    590 	    PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_MASS_STORAGE_RAID)
    591 		sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_RAID;
    592 
    593 	wdc_allocate_regs(&sc->sc_wdcdev);
    594 
    595 	ATADEBUG_PRINT(("via_chip_map: old APO_IDECONF=0x%x, "
    596 	    "APO_CTLMISC=0x%x, APO_DATATIM=0x%x, APO_UDMA=0x%x\n",
    597 	    pci_conf_read(sc->sc_pc, sc->sc_tag, APO_IDECONF(sc)),
    598 	    pci_conf_read(sc->sc_pc, sc->sc_tag, APO_CTLMISC(sc)),
    599 	    pci_conf_read(sc->sc_pc, sc->sc_tag, APO_DATATIM(sc)),
    600 	    pci_conf_read(sc->sc_pc, sc->sc_tag, APO_UDMA(sc))),
    601 	    DEBUG_PROBE);
    602 
    603 	ideconf = pci_conf_read(sc->sc_pc, sc->sc_tag, APO_IDECONF(sc));
    604 	for (channel = 0; channel < sc->sc_wdcdev.sc_atac.atac_nchannels;
    605 	     channel++) {
    606 		cp = &sc->pciide_channels[channel];
    607 		if (pciide_chansetup(sc, channel, interface) == 0)
    608 			continue;
    609 
    610 		if ((ideconf & APO_IDECONF_EN(channel)) == 0) {
    611 			aprint_normal_dev(sc->sc_wdcdev.sc_atac.atac_dev,
    612 			    "%s channel ignored (disabled)\n", cp->name);
    613 			cp->ata_channel.ch_flags |= ATACH_DISABLED;
    614 			continue;
    615 		}
    616 		via_mapchan(pa, cp, interface, pciide_pci_intr);
    617 	}
    618 }
    619 
    620 static void
    621 via_mapchan(struct pci_attach_args *pa,	struct pciide_channel *cp,
    622     pcireg_t interface, int (*pci_intr)(void *))
    623 {
    624 	struct ata_channel *wdc_cp;
    625 	struct pciide_softc *sc;
    626 	prop_bool_t compat_nat_enable;
    627 
    628 	wdc_cp = &cp->ata_channel;
    629 	sc = CHAN_TO_PCIIDE(&cp->ata_channel);
    630 	compat_nat_enable = prop_dictionary_get(
    631 	    device_properties(sc->sc_wdcdev.sc_atac.atac_dev),
    632 	      "use-compat-native-irq");
    633 
    634 	if (interface & PCIIDE_INTERFACE_PCI(wdc_cp->ch_channel)) {
    635 		/* native mode with irq 14/15 requested? */
    636 		if (compat_nat_enable != NULL &&
    637 		    prop_bool_true(compat_nat_enable))
    638 			via_mapregs_compat_native(pa, cp);
    639 		else
    640 			pciide_mapregs_native(pa, cp, pci_intr);
    641 	} else {
    642 		pciide_mapregs_compat(pa, cp, wdc_cp->ch_channel);
    643 		if ((cp->ata_channel.ch_flags & ATACH_DISABLED) == 0)
    644 			pciide_map_compat_intr(pa, cp, wdc_cp->ch_channel);
    645 	}
    646 	wdcattach(wdc_cp);
    647 }
    648 
    649 /*
    650  * At least under certain (mis)configurations (e.g. on the "Pegasos" board)
    651  * the VT8231-IDE's native mode only works with irq 14/15, and cannot be
    652  * programmed to use a single native PCI irq alone. So we install an interrupt
    653  * handler for each channel, as in compatibility mode.
    654  */
    655 static void
    656 via_mapregs_compat_native(struct pci_attach_args *pa,
    657     struct pciide_channel *cp)
    658 {
    659 	struct ata_channel *wdc_cp;
    660 	struct pciide_softc *sc;
    661 
    662 	wdc_cp = &cp->ata_channel;
    663 	sc = CHAN_TO_PCIIDE(&cp->ata_channel);
    664 
    665 	/* XXX prevent pciide_mapregs_native from installing a handler */
    666 	if (sc->sc_pci_ih == NULL)
    667 		sc->sc_pci_ih = (void *)~0;
    668 	pciide_mapregs_native(pa, cp, NULL);
    669 
    670 	/* interrupts are fixed to 14/15, as in compatibility mode */
    671 	cp->compat = 1;
    672 	if ((wdc_cp->ch_flags & ATACH_DISABLED) == 0) {
    673 #ifdef __HAVE_PCIIDE_MACHDEP_COMPAT_INTR_ESTABLISH
    674 		cp->ih = pciide_machdep_compat_intr_establish(
    675 		    sc->sc_wdcdev.sc_atac.atac_dev, pa, wdc_cp->ch_channel,
    676 		    pciide_compat_intr, cp);
    677 		if (cp->ih == NULL) {
    678 #endif
    679 			aprint_error_dev(sc->sc_wdcdev.sc_atac.atac_dev,
    680 			    "no compatibility interrupt for "
    681 			    "use by %s channel\n", cp->name);
    682 			wdc_cp->ch_flags |= ATACH_DISABLED;
    683 #ifdef __HAVE_PCIIDE_MACHDEP_COMPAT_INTR_ESTABLISH
    684 		}
    685 		sc->sc_pci_ih = cp->ih;  /* XXX */
    686 #endif
    687 	}
    688 }
    689 
    690 static void
    691 via_setup_channel(struct ata_channel *chp)
    692 {
    693 	u_int32_t udmatim_reg, datatim_reg;
    694 	u_int8_t idedma_ctl;
    695 	int mode, drive, s;
    696 	struct ata_drive_datas *drvp;
    697 	struct atac_softc *atac = chp->ch_atac;
    698 	struct pciide_channel *cp = CHAN_TO_PCHAN(chp);
    699 	struct pciide_softc *sc = CHAN_TO_PCIIDE(chp);
    700 #ifndef PCIIDE_AMD756_ENABLEDMA
    701 	int rev = PCI_REVISION(
    702 	    pci_conf_read(sc->sc_pc, sc->sc_tag, PCI_CLASS_REG));
    703 #endif
    704 
    705 	idedma_ctl = 0;
    706 	datatim_reg = pci_conf_read(sc->sc_pc, sc->sc_tag, APO_DATATIM(sc));
    707 	udmatim_reg = pci_conf_read(sc->sc_pc, sc->sc_tag, APO_UDMA(sc));
    708 	datatim_reg &= ~APO_DATATIM_MASK(chp->ch_channel);
    709 	udmatim_reg &= ~APO_UDMA_MASK(chp->ch_channel);
    710 
    711 	/* setup DMA if needed */
    712 	pciide_channel_dma_setup(cp);
    713 
    714 	for (drive = 0; drive < 2; drive++) {
    715 		drvp = &chp->ch_drive[drive];
    716 		/* If no drive, skip */
    717 		if ((drvp->drive_flags & DRIVE) == 0)
    718 			continue;
    719 		/* add timing values, setup DMA if needed */
    720 		if (((drvp->drive_flags & DRIVE_DMA) == 0 &&
    721 		    (drvp->drive_flags & DRIVE_UDMA) == 0)) {
    722 			mode = drvp->PIO_mode;
    723 			goto pio;
    724 		}
    725 		if ((atac->atac_cap & ATAC_CAP_UDMA) &&
    726 		    (drvp->drive_flags & DRIVE_UDMA)) {
    727 			/* use Ultra/DMA */
    728 			s = splbio();
    729 			drvp->drive_flags &= ~DRIVE_DMA;
    730 			splx(s);
    731 			udmatim_reg |= APO_UDMA_EN(chp->ch_channel, drive) |
    732 			    APO_UDMA_EN_MTH(chp->ch_channel, drive);
    733 			switch (PCI_VENDOR(sc->sc_pci_id)) {
    734 			case PCI_VENDOR_VIATECH:
    735 				if (sc->sc_wdcdev.sc_atac.atac_udma_cap == 6) {
    736 					/* 8233a */
    737 					udmatim_reg |= APO_UDMA_TIME(
    738 					    chp->ch_channel,
    739 					    drive,
    740 					    via_udma133_tim[drvp->UDMA_mode]);
    741 				} else if (sc->sc_wdcdev.sc_atac.atac_udma_cap == 5) {
    742 					/* 686b */
    743 					udmatim_reg |= APO_UDMA_TIME(
    744 					    chp->ch_channel,
    745 					    drive,
    746 					    via_udma100_tim[drvp->UDMA_mode]);
    747 				} else if (sc->sc_wdcdev.sc_atac.atac_udma_cap == 4) {
    748 					/* 596b or 686a */
    749 					udmatim_reg |= APO_UDMA_CLK66(
    750 					    chp->ch_channel);
    751 					udmatim_reg |= APO_UDMA_TIME(
    752 					    chp->ch_channel,
    753 					    drive,
    754 					    via_udma66_tim[drvp->UDMA_mode]);
    755 				} else {
    756 					/* 596a or 586b */
    757 					udmatim_reg |= APO_UDMA_TIME(
    758 					    chp->ch_channel,
    759 					    drive,
    760 					    via_udma33_tim[drvp->UDMA_mode]);
    761 				}
    762 				break;
    763 			case PCI_VENDOR_AMD:
    764 			case PCI_VENDOR_NVIDIA:
    765 				udmatim_reg |= APO_UDMA_TIME(chp->ch_channel,
    766 				    drive, amd7x6_udma_tim[drvp->UDMA_mode]);
    767 				 break;
    768 			}
    769 			/* can use PIO timings, MW DMA unused */
    770 			mode = drvp->PIO_mode;
    771 		} else {
    772 			/* use Multiword DMA, but only if revision is OK */
    773 			s = splbio();
    774 			drvp->drive_flags &= ~DRIVE_UDMA;
    775 			splx(s);
    776 #ifndef PCIIDE_AMD756_ENABLEDMA
    777 			/*
    778 			 * The workaround doesn't seem to be necessary
    779 			 * with all drives, so it can be disabled by
    780 			 * PCIIDE_AMD756_ENABLEDMA. It causes a hard hang if
    781 			 * triggered.
    782 			 */
    783 			if (PCI_VENDOR(sc->sc_pci_id) == PCI_VENDOR_AMD &&
    784 			    sc->sc_pp->ide_product ==
    785 			    PCI_PRODUCT_AMD_PBC756_IDE &&
    786 			    AMD756_CHIPREV_DISABLEDMA(rev)) {
    787 				aprint_normal(
    788 				    "%s:%d:%d: multi-word DMA disabled due "
    789 				    "to chip revision\n",
    790 				    device_xname(
    791 				      sc->sc_wdcdev.sc_atac.atac_dev),
    792 				    chp->ch_channel, drive);
    793 				mode = drvp->PIO_mode;
    794 				s = splbio();
    795 				drvp->drive_flags &= ~DRIVE_DMA;
    796 				splx(s);
    797 				goto pio;
    798 			}
    799 #endif
    800 			/* mode = min(pio, dma+2) */
    801 			if (drvp->PIO_mode <= (drvp->DMA_mode + 2))
    802 				mode = drvp->PIO_mode;
    803 			else
    804 				mode = drvp->DMA_mode + 2;
    805 		}
    806 		idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
    807 
    808 pio:		/* setup PIO mode */
    809 		if (mode <= 2) {
    810 			drvp->DMA_mode = 0;
    811 			drvp->PIO_mode = 0;
    812 			mode = 0;
    813 		} else {
    814 			drvp->PIO_mode = mode;
    815 			drvp->DMA_mode = mode - 2;
    816 		}
    817 		datatim_reg |=
    818 		    APO_DATATIM_PULSE(chp->ch_channel, drive,
    819 			apollo_pio_set[mode]) |
    820 		    APO_DATATIM_RECOV(chp->ch_channel, drive,
    821 			apollo_pio_rec[mode]);
    822 	}
    823 	if (idedma_ctl != 0) {
    824 		/* Add software bits in status register */
    825 		bus_space_write_1(sc->sc_dma_iot, cp->dma_iohs[IDEDMA_CTL], 0,
    826 		    idedma_ctl);
    827 	}
    828 	pci_conf_write(sc->sc_pc, sc->sc_tag, APO_DATATIM(sc), datatim_reg);
    829 	pci_conf_write(sc->sc_pc, sc->sc_tag, APO_UDMA(sc), udmatim_reg);
    830 	ATADEBUG_PRINT(("via_chip_map: APO_DATATIM=0x%x, APO_UDMA=0x%x\n",
    831 	    pci_conf_read(sc->sc_pc, sc->sc_tag, APO_DATATIM(sc)),
    832 	    pci_conf_read(sc->sc_pc, sc->sc_tag, APO_UDMA(sc))), DEBUG_PROBE);
    833 }
    834 
    835 static int
    836 via_sata_chip_map_common(struct pciide_softc *sc, struct pci_attach_args *pa)
    837 {
    838 	int maptype, ret;
    839 
    840 	if (pciide_chipen(sc, pa) == 0)
    841 		return 0;
    842 
    843 	aprint_verbose_dev(sc->sc_wdcdev.sc_atac.atac_dev,
    844 	    "bus-master DMA support present");
    845 	pciide_mapreg_dma(sc, pa);
    846 	aprint_verbose("\n");
    847 
    848 	if (sc->sc_dma_ok) {
    849 		sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_UDMA | ATAC_CAP_DMA;
    850 		sc->sc_wdcdev.irqack = pciide_irqack;
    851 	}
    852 	sc->sc_wdcdev.sc_atac.atac_pio_cap = 4;
    853 	sc->sc_wdcdev.sc_atac.atac_dma_cap = 2;
    854 	sc->sc_wdcdev.sc_atac.atac_udma_cap = 6;
    855 
    856 	sc->sc_wdcdev.sc_atac.atac_channels = sc->wdc_chanarray;
    857 	sc->sc_wdcdev.sc_atac.atac_nchannels = PCIIDE_NUM_CHANNELS;
    858 	sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_DATA16 | ATAC_CAP_DATA32;
    859 	sc->sc_wdcdev.sc_atac.atac_set_modes = sata_setup_channel;
    860 
    861 	if (PCI_CLASS(pa->pa_class) == PCI_CLASS_MASS_STORAGE &&
    862 	    PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_MASS_STORAGE_RAID)
    863 		sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_RAID;
    864 
    865 	wdc_allocate_regs(&sc->sc_wdcdev);
    866 	maptype = pci_mapreg_type(pa->pa_pc, pa->pa_tag,
    867 	    PCI_MAPREG_START + 0x14);
    868 	switch(maptype) {
    869 	case PCI_MAPREG_TYPE_IO:
    870 		ret = pci_mapreg_map(pa, PCI_MAPREG_START + 0x14,
    871 		    PCI_MAPREG_TYPE_IO, 0, &sc->sc_ba5_st, &sc->sc_ba5_sh,
    872 		    NULL, &sc->sc_ba5_ss);
    873 		break;
    874 	case PCI_MAPREG_MEM_TYPE_32BIT:
    875 		/*
    876 		 * Enable memory-space access if it isn't already there.
    877 		 */
    878 		if ((pa->pa_flags & PCI_FLAGS_MEM_ENABLED) == 0) {
    879 			pcireg_t csr;
    880 
    881 			pa->pa_flags |= PCI_FLAGS_MEM_ENABLED;
    882 			csr = pci_conf_read(pa->pa_pc, pa->pa_tag,
    883 			    PCI_COMMAND_STATUS_REG);
    884 			pci_conf_write(pa->pa_pc, pa->pa_tag,
    885 			    PCI_COMMAND_STATUS_REG,
    886 			    csr | PCI_COMMAND_MEM_ENABLE);
    887 		}
    888 
    889 		ret = pci_mapreg_map(pa, PCI_MAPREG_START + 0x14,
    890 		    PCI_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_32BIT,
    891 		    0, &sc->sc_ba5_st, &sc->sc_ba5_sh,
    892 		    NULL, &sc->sc_ba5_ss);
    893 		break;
    894 	default:
    895 		aprint_error_dev(sc->sc_wdcdev.sc_atac.atac_dev,
    896 		    "couldn't map sata regs, unsupported maptype (0x%x)\n",
    897 		    maptype);
    898 		return 0;
    899 	}
    900 	if (ret != 0) {
    901 		aprint_error_dev(sc->sc_wdcdev.sc_atac.atac_dev,
    902 		    "couldn't map sata regs\n");
    903 		return 0;
    904 	}
    905 	return 1;
    906 }
    907 
    908 static void
    909 via_sata_chip_map(struct pciide_softc *sc, struct pci_attach_args *pa,
    910     int satareg_shift)
    911 {
    912 	struct pciide_channel *cp;
    913 	struct ata_channel *wdc_cp;
    914 	struct wdc_regs *wdr;
    915 	pcireg_t interface = PCI_INTERFACE(pa->pa_class);
    916 	int channel;
    917 
    918 	if (via_sata_chip_map_common(sc, pa) == 0)
    919 		return;
    920 
    921 	if (interface == 0) {
    922 		ATADEBUG_PRINT(("via_sata_chip_map interface == 0\n"),
    923 		    DEBUG_PROBE);
    924 		interface = PCIIDE_INTERFACE_BUS_MASTER_DMA |
    925 		    PCIIDE_INTERFACE_PCI(0) | PCIIDE_INTERFACE_PCI(1);
    926 	}
    927 
    928 	for (channel = 0; channel < sc->sc_wdcdev.sc_atac.atac_nchannels;
    929 	     channel++) {
    930 		cp = &sc->pciide_channels[channel];
    931 		if (pciide_chansetup(sc, channel, interface) == 0)
    932 			continue;
    933 		wdc_cp = &cp->ata_channel;
    934 		wdr = CHAN_TO_WDC_REGS(wdc_cp);
    935 		wdr->sata_iot = sc->sc_ba5_st;
    936 		wdr->sata_baseioh = sc->sc_ba5_sh;
    937 		if (bus_space_subregion(wdr->sata_iot, wdr->sata_baseioh,
    938 		    (wdc_cp->ch_channel << satareg_shift) + 0x0, 4,
    939 		    &wdr->sata_status) != 0) {
    940 			aprint_error_dev(sc->sc_wdcdev.sc_atac.atac_dev,
    941 			    "couldn't map channel %d sata_status regs\n",
    942 			    wdc_cp->ch_channel);
    943 			continue;
    944 		}
    945 		if (bus_space_subregion(wdr->sata_iot, wdr->sata_baseioh,
    946 		    (wdc_cp->ch_channel << satareg_shift) + 0x4, 4,
    947 		    &wdr->sata_error) != 0) {
    948 			aprint_error_dev(sc->sc_wdcdev.sc_atac.atac_dev,
    949 			    "couldn't map channel %d sata_error regs\n",
    950 			    wdc_cp->ch_channel);
    951 			continue;
    952 		}
    953 		if (bus_space_subregion(wdr->sata_iot, wdr->sata_baseioh,
    954 		    (wdc_cp->ch_channel << satareg_shift) + 0x8, 4,
    955 		    &wdr->sata_control) != 0) {
    956 			aprint_error_dev(sc->sc_wdcdev.sc_atac.atac_dev,
    957 			    "couldn't map channel %d sata_control regs\n",
    958 			    wdc_cp->ch_channel);
    959 			continue;
    960 		}
    961 		sc->sc_wdcdev.sc_atac.atac_probe = wdc_sataprobe;
    962 		pciide_mapchan(pa, cp, interface, pciide_pci_intr);
    963 	}
    964 }
    965 
    966 static void
    967 via_sata_chip_map_6(struct pciide_softc *sc, struct pci_attach_args *pa)
    968 {
    969 	via_sata_chip_map(sc, pa, 6);
    970 }
    971 
    972 static void
    973 via_sata_chip_map_7(struct pciide_softc *sc, struct pci_attach_args *pa)
    974 {
    975 	via_sata_chip_map(sc, pa, 7);
    976 }
    977 
    978 static void
    979 via_sata_chip_map_new(struct pciide_softc *sc, struct pci_attach_args *pa)
    980 {
    981 	struct pciide_channel *cp;
    982 	struct ata_channel *wdc_cp;
    983 	struct wdc_regs *wdr;
    984 	pcireg_t interface = PCI_INTERFACE(pa->pa_class);
    985 	int channel;
    986 	pci_intr_handle_t intrhandle;
    987 	const char *intrstr;
    988 	int i;
    989 
    990 	if (via_sata_chip_map_common(sc, pa) == 0)
    991 		return;
    992 
    993 	if (interface == 0) {
    994 		ATADEBUG_PRINT(("via_sata_chip_map interface == 0\n"),
    995 		    DEBUG_PROBE);
    996 		interface = PCIIDE_INTERFACE_BUS_MASTER_DMA |
    997 		    PCIIDE_INTERFACE_PCI(0) | PCIIDE_INTERFACE_PCI(1);
    998 	}
    999 
   1000 	if (pci_intr_map(pa, &intrhandle) != 0) {
   1001 		aprint_error_dev(sc->sc_wdcdev.sc_atac.atac_dev,
   1002 		    "couldn't map native-PCI interrupt\n");
   1003 		return;
   1004 	}
   1005 	intrstr = pci_intr_string(pa->pa_pc, intrhandle);
   1006 	sc->sc_pci_ih = pci_intr_establish(pa->pa_pc,
   1007 	    intrhandle, IPL_BIO, pciide_pci_intr, sc);
   1008 	if (sc->sc_pci_ih == NULL) {
   1009 		aprint_error_dev(sc->sc_wdcdev.sc_atac.atac_dev,
   1010 		    "couldn't establish native-PCI interrupt");
   1011 		if (intrstr != NULL)
   1012 		    aprint_error(" at %s", intrstr);
   1013 		aprint_error("\n");
   1014 		return;
   1015 	}
   1016 	aprint_normal_dev(sc->sc_wdcdev.sc_atac.atac_dev,
   1017 	    "using %s for native-PCI interrupt\n",
   1018 	    intrstr ? intrstr : "unknown interrupt");
   1019 
   1020 	for (channel = 0; channel < sc->sc_wdcdev.sc_atac.atac_nchannels;
   1021 	     channel++) {
   1022 		cp = &sc->pciide_channels[channel];
   1023 		if (pciide_chansetup(sc, channel, interface) == 0)
   1024 			continue;
   1025 		cp->ata_channel.ch_ndrive = 1;
   1026 		wdc_cp = &cp->ata_channel;
   1027 		wdr = CHAN_TO_WDC_REGS(wdc_cp);
   1028 
   1029 		wdr->sata_iot = sc->sc_ba5_st;
   1030 		wdr->sata_baseioh = sc->sc_ba5_sh;
   1031 		if (bus_space_subregion(wdr->sata_iot, wdr->sata_baseioh,
   1032 		    (wdc_cp->ch_channel << 6) + 0x0, 4,
   1033 		    &wdr->sata_status) != 0) {
   1034 			aprint_error_dev(sc->sc_wdcdev.sc_atac.atac_dev,
   1035 			    "couldn't map channel %d sata_status regs\n",
   1036 			    wdc_cp->ch_channel);
   1037 			continue;
   1038 		}
   1039 		if (bus_space_subregion(wdr->sata_iot, wdr->sata_baseioh,
   1040 		    (wdc_cp->ch_channel << 6) + 0x4, 4,
   1041 		    &wdr->sata_error) != 0) {
   1042 			aprint_error_dev(sc->sc_wdcdev.sc_atac.atac_dev,
   1043 			    "couldn't map channel %d sata_error regs\n",
   1044 			    wdc_cp->ch_channel);
   1045 			continue;
   1046 		}
   1047 		if (bus_space_subregion(wdr->sata_iot, wdr->sata_baseioh,
   1048 		    (wdc_cp->ch_channel << 6) + 0x8, 4,
   1049 		    &wdr->sata_control) != 0) {
   1050 			aprint_error_dev(sc->sc_wdcdev.sc_atac.atac_dev,
   1051 			    "couldn't map channel %d sata_control regs\n",
   1052 			    wdc_cp->ch_channel);
   1053 			continue;
   1054 		}
   1055 		sc->sc_wdcdev.sc_atac.atac_probe = wdc_sataprobe;
   1056 
   1057 		if (pci_mapreg_map(pa, (PCI_MAPREG_START + (4 * (channel))),
   1058 		    PCI_MAPREG_TYPE_IO, 0, &wdr->cmd_iot, &wdr->cmd_baseioh,
   1059 		    NULL, &wdr->cmd_ios) != 0) {
   1060 			aprint_error_dev(sc->sc_wdcdev.sc_atac.atac_dev,
   1061 			    "couldn't map %s channel regs\n", cp->name);
   1062 		}
   1063 		wdr->ctl_iot = wdr->cmd_iot;
   1064 		for (i = 0; i < WDC_NREG; i++) {
   1065 			if (bus_space_subregion(wdr->cmd_iot,
   1066 			    wdr->cmd_baseioh, i, i == 0 ? 4 : 1,
   1067 			    &wdr->cmd_iohs[i]) != 0) {
   1068 				aprint_error_dev(
   1069 				    sc->sc_wdcdev.sc_atac.atac_dev,
   1070 				    "couldn't subregion %s "
   1071 				    "channel cmd regs\n", cp->name);
   1072 				return;
   1073 			}
   1074 		}
   1075 		if (bus_space_subregion(wdr->cmd_iot, wdr->cmd_baseioh,
   1076 		    WDC_NREG + 2, 1,  &wdr->ctl_ioh) != 0) {
   1077 			aprint_error_dev(sc->sc_wdcdev.sc_atac.atac_dev,
   1078 			    "couldn't map channel %d ctl regs\n", channel);
   1079 			return;
   1080 		}
   1081 		wdc_init_shadow_regs(wdc_cp);
   1082 		wdr->data32iot = wdr->cmd_iot;
   1083 		wdr->data32ioh = wdr->cmd_iohs[wd_data];
   1084 		wdcattach(wdc_cp);
   1085 	}
   1086 }
   1087