xref: /netbsd-src/sys/dev/pci/viaide.c (revision b757af438b42b93f8c6571f026d8b8ef3eaf5fc9)
1 /*	$NetBSD: viaide.c,v 1.78 2012/03/18 17:50:43 tsutsui 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 1.78 2012/03/18 17:50:43 tsutsui Exp $");
30 
31 #include <sys/param.h>
32 #include <sys/systm.h>
33 #include <sys/malloc.h>
34 
35 #include <dev/pci/pcivar.h>
36 #include <dev/pci/pcidevs.h>
37 #include <dev/pci/pciidereg.h>
38 #include <dev/pci/pciidevar.h>
39 #include <dev/pci/pciide_apollo_reg.h>
40 
41 static int	via_pcib_match(const struct pci_attach_args *);
42 static void	via_chip_map(struct pciide_softc *,
43 		    const struct pci_attach_args *);
44 static void	via_mapchan(const struct pci_attach_args *,
45 		    struct pciide_channel *,
46 		    pcireg_t, int (*)(void *));
47 static void	via_mapregs_compat_native(const struct pci_attach_args *,
48 		    struct pciide_channel *);
49 static int	via_sata_chip_map_common(struct pciide_softc *,
50 		    const struct pci_attach_args *);
51 static void	via_sata_chip_map(struct pciide_softc *,
52 		    const struct pci_attach_args *, int);
53 static void	via_sata_chip_map_6(struct pciide_softc *,
54 		    const struct pci_attach_args *);
55 static void	via_sata_chip_map_7(struct pciide_softc *,
56 		    const struct pci_attach_args *);
57 static void	via_sata_chip_map_new(struct pciide_softc *,
58 		    const struct pci_attach_args *);
59 static void	via_setup_channel(struct ata_channel *);
60 
61 static int	viaide_match(device_t, cfdata_t, void *);
62 static void	viaide_attach(device_t, device_t, void *);
63 static const struct pciide_product_desc *
64 		viaide_lookup(pcireg_t);
65 static bool	viaide_suspend(device_t, const pmf_qual_t *);
66 static bool	viaide_resume(device_t, const pmf_qual_t *);
67 
68 CFATTACH_DECL_NEW(viaide, sizeof(struct pciide_softc),
69     viaide_match, viaide_attach, pciide_detach, NULL);
70 
71 static const struct pciide_product_desc pciide_amd_products[] =  {
72 	{ PCI_PRODUCT_AMD_PBC756_IDE,
73 	  0,
74 	  "AMD AMD756 IDE Controller",
75 	  via_chip_map
76 	},
77 	{ PCI_PRODUCT_AMD_PBC766_IDE,
78 	  0,
79 	  "AMD AMD766 IDE Controller",
80 	  via_chip_map
81 	},
82 	{ PCI_PRODUCT_AMD_PBC768_IDE,
83 	  0,
84 	  "AMD AMD768 IDE Controller",
85 	  via_chip_map
86 	},
87 	{ PCI_PRODUCT_AMD_PBC8111_IDE,
88 	  0,
89 	  "AMD AMD8111 IDE Controller",
90 	  via_chip_map
91 	},
92 	{ PCI_PRODUCT_AMD_CS5536_IDE,
93 	  0,
94 	  "AMD CS5536 IDE Controller",
95 	  via_chip_map
96 	},
97 	{ 0,
98 	  0,
99 	  NULL,
100 	  NULL
101 	}
102 };
103 
104 static const struct pciide_product_desc pciide_nvidia_products[] = {
105 	{ PCI_PRODUCT_NVIDIA_NFORCE_ATA100,
106 	  0,
107 	  "NVIDIA nForce IDE Controller",
108 	  via_chip_map
109 	},
110 	{ PCI_PRODUCT_NVIDIA_NFORCE2_ATA133,
111 	  0,
112 	  "NVIDIA nForce2 IDE Controller",
113 	  via_chip_map
114 	},
115 	{ PCI_PRODUCT_NVIDIA_NFORCE2_400_ATA133,
116 	  0,
117 	  "NVIDIA nForce2 Ultra 400 IDE Controller",
118 	  via_chip_map
119 	},
120 	{ PCI_PRODUCT_NVIDIA_NFORCE2_400_SATA,
121 	  0,
122 	  "NVIDIA nForce2 Ultra 400 Serial ATA Controller",
123 	  via_sata_chip_map_6
124 	},
125 	{ PCI_PRODUCT_NVIDIA_NFORCE3_ATA133,
126 	  0,
127 	  "NVIDIA nForce3 IDE Controller",
128 	  via_chip_map
129 	},
130 	{ PCI_PRODUCT_NVIDIA_NFORCE3_250_ATA133,
131 	  0,
132 	  "NVIDIA nForce3 250 IDE Controller",
133 	  via_chip_map
134 	},
135 	{ PCI_PRODUCT_NVIDIA_NFORCE3_250_SATA,
136 	  0,
137 	  "NVIDIA nForce3 250 Serial ATA Controller",
138 	  via_sata_chip_map_6
139 	},
140 	{ PCI_PRODUCT_NVIDIA_NFORCE3_250_SATA2,
141 	  0,
142 	  "NVIDIA nForce3 250 Serial ATA Controller",
143 	  via_sata_chip_map_6
144 	},
145 	{ PCI_PRODUCT_NVIDIA_NFORCE4_ATA133,
146 	  0,
147 	  "NVIDIA nForce4 IDE Controller",
148 	  via_chip_map
149 	},
150 	{ PCI_PRODUCT_NVIDIA_NFORCE4_SATA1,
151 	  0,
152 	  "NVIDIA nForce4 Serial ATA Controller",
153 	  via_sata_chip_map_6
154 	},
155 	{ PCI_PRODUCT_NVIDIA_NFORCE4_SATA2,
156 	  0,
157 	  "NVIDIA nForce4 Serial ATA Controller",
158 	  via_sata_chip_map_6
159 	},
160 	{ PCI_PRODUCT_NVIDIA_NFORCE430_ATA133,
161 	  0,
162 	  "NVIDIA nForce430 IDE Controller",
163 	  via_chip_map
164 	},
165 	{ PCI_PRODUCT_NVIDIA_NFORCE430_SATA1,
166 	  0,
167 	  "NVIDIA nForce430 Serial ATA Controller",
168 	  via_sata_chip_map_6
169 	},
170 	{ PCI_PRODUCT_NVIDIA_NFORCE430_SATA2,
171 	  0,
172 	  "NVIDIA nForce430 Serial ATA Controller",
173 	  via_sata_chip_map_6
174 	},
175 	{ PCI_PRODUCT_NVIDIA_MCP04_IDE,
176 	  0,
177 	  "NVIDIA MCP04 IDE Controller",
178 	  via_chip_map
179 	},
180 	{ PCI_PRODUCT_NVIDIA_MCP04_SATA,
181 	  0,
182 	  "NVIDIA MCP04 Serial ATA Controller",
183 	  via_sata_chip_map_6
184 	},
185 	{ PCI_PRODUCT_NVIDIA_MCP04_SATA2,
186 	  0,
187 	  "NVIDIA MCP04 Serial ATA Controller",
188 	  via_sata_chip_map_6
189 	},
190 	{ PCI_PRODUCT_NVIDIA_MCP55_IDE,
191 	  0,
192 	  "NVIDIA MCP55 IDE Controller",
193 	  via_chip_map
194 	},
195 	{ PCI_PRODUCT_NVIDIA_MCP55_SATA,
196 	  0,
197 	  "NVIDIA MCP55 Serial ATA Controller",
198 	  via_sata_chip_map_6
199 	},
200 	{ PCI_PRODUCT_NVIDIA_MCP55_SATA2,
201 	  0,
202 	  "NVIDIA MCP55 Serial ATA Controller",
203 	  via_sata_chip_map_6
204 	},
205 	{ PCI_PRODUCT_NVIDIA_MCP61_IDE,
206 	  0,
207 	  "NVIDIA MCP61 IDE Controller",
208 	  via_chip_map
209 	},
210 	{ PCI_PRODUCT_NVIDIA_MCP65_IDE,
211 	  0,
212 	  "NVIDIA MCP65 IDE Controller",
213 	  via_chip_map
214 	},
215 	{ PCI_PRODUCT_NVIDIA_MCP73_IDE,
216 	  0,
217 	  "NVIDIA MCP73 IDE Controller",
218 	  via_chip_map
219 	},
220 	{ PCI_PRODUCT_NVIDIA_MCP77_IDE,
221 	  0,
222 	  "NVIDIA MCP77 IDE Controller",
223 	  via_chip_map
224 	},
225 	{ PCI_PRODUCT_NVIDIA_MCP61_SATA,
226 	  0,
227 	  "NVIDIA MCP61 Serial ATA Controller",
228 	  via_sata_chip_map_6
229 	},
230 	{ PCI_PRODUCT_NVIDIA_MCP61_SATA2,
231 	  0,
232 	  "NVIDIA MCP61 Serial ATA Controller",
233 	  via_sata_chip_map_6
234 	},
235 	{ PCI_PRODUCT_NVIDIA_MCP61_SATA3,
236 	  0,
237 	  "NVIDIA MCP61 Serial ATA Controller",
238 	  via_sata_chip_map_6
239 	},
240 	{ PCI_PRODUCT_NVIDIA_MCP65_SATA,
241 	  0,
242 	  "NVIDIA MCP65 Serial ATA Controller",
243 	  via_sata_chip_map_6
244 	},
245 	{ PCI_PRODUCT_NVIDIA_MCP65_SATA2,
246 	  0,
247 	  "NVIDIA MCP65 Serial ATA Controller",
248 	  via_sata_chip_map_6
249 	},
250 	{ PCI_PRODUCT_NVIDIA_MCP65_SATA3,
251 	  0,
252 	  "NVIDIA MCP65 Serial ATA Controller",
253 	  via_sata_chip_map_6
254 	},
255 	{ PCI_PRODUCT_NVIDIA_MCP65_SATA4,
256 	  0,
257 	  "NVIDIA MCP65 Serial ATA Controller",
258 	  via_sata_chip_map_6
259 	},
260 	{ PCI_PRODUCT_NVIDIA_MCP67_IDE,
261 	  0,
262 	  "NVIDIA MCP67 IDE Controller",
263 	  via_chip_map,
264 	},
265 	{ PCI_PRODUCT_NVIDIA_MCP67_SATA,
266 	  0,
267 	  "NVIDIA MCP67 Serial ATA Controller",
268 	  via_sata_chip_map_6,
269 	},
270 	{ PCI_PRODUCT_NVIDIA_MCP67_SATA2,
271 	  0,
272 	  "NVIDIA MCP67 Serial ATA Controller",
273 	  via_sata_chip_map_6,
274 	},
275 	{ PCI_PRODUCT_NVIDIA_MCP67_SATA3,
276 	  0,
277 	  "NVIDIA MCP67 Serial ATA Controller",
278 	  via_sata_chip_map_6,
279 	},
280 	{ PCI_PRODUCT_NVIDIA_MCP67_SATA4,
281 	  0,
282 	  "NVIDIA MCP67 Serial ATA Controller",
283 	  via_sata_chip_map_6,
284 	},
285 	{ 0,
286 	  0,
287 	  NULL,
288 	  NULL
289 	}
290 };
291 
292 static const struct pciide_product_desc pciide_via_products[] =  {
293 	{ PCI_PRODUCT_VIATECH_VT82C586_IDE,
294 	  0,
295 	  NULL,
296 	  via_chip_map,
297 	 },
298 	{ PCI_PRODUCT_VIATECH_VT82C586A_IDE,
299 	  0,
300 	  NULL,
301 	  via_chip_map,
302 	},
303 	{ PCI_PRODUCT_VIATECH_CX700_IDE,
304 	  0,
305 	  NULL,
306 	  via_chip_map,
307 	},
308 	{ PCI_PRODUCT_VIATECH_CX700M2_IDE,
309 	  0,
310 	  NULL,
311 	  via_chip_map,
312 	},
313 	{ PCI_PRODUCT_VIATECH_VX900_IDE,
314 	  0,
315 	  NULL,
316 	  via_chip_map,
317 	},
318 	{ PCI_PRODUCT_VIATECH_VT6410_RAID,
319 	  0,
320 	  NULL,
321 	  via_chip_map,
322 	},
323 	{ PCI_PRODUCT_VIATECH_VT6421_RAID,
324 	  0,
325 	  "VIA Technologies VT6421 Serial ATA RAID Controller",
326 	  via_sata_chip_map_new,
327 	},
328 	{ PCI_PRODUCT_VIATECH_VT8237_SATA,
329 	  0,
330 	  "VIA Technologies VT8237 SATA Controller",
331 	  via_sata_chip_map_7,
332 	},
333 	{ PCI_PRODUCT_VIATECH_VT8237A_SATA,
334 	  0,
335 	  "VIA Technologies VT8237A SATA Controller",
336 	  via_sata_chip_map_7,
337 	},
338 	{ PCI_PRODUCT_VIATECH_VT8237A_SATA_2,
339 	  0,
340 	  "VIA Technologies VT8237A (5337) SATA Controller",
341 	  via_sata_chip_map_7,
342 	},
343 	{ PCI_PRODUCT_VIATECH_VT8237R_SATA,
344 	  0,
345 	  "VIA Technologies VT8237R SATA Controller",
346 	  via_sata_chip_map_7,
347 	},
348 	{ PCI_PRODUCT_VIATECH_VT8237S_SATA,
349 	  0,
350 	  "VIA Technologies VT8237S SATA Controller",
351 	  via_sata_chip_map_7,
352 	},
353 	{ 0,
354 	  0,
355 	  NULL,
356 	  NULL
357 	}
358 };
359 
360 static const struct pciide_product_desc *
361 viaide_lookup(pcireg_t id)
362 {
363 
364 	switch (PCI_VENDOR(id)) {
365 	case PCI_VENDOR_VIATECH:
366 		return (pciide_lookup_product(id, pciide_via_products));
367 
368 	case PCI_VENDOR_AMD:
369 		return (pciide_lookup_product(id, pciide_amd_products));
370 
371 	case PCI_VENDOR_NVIDIA:
372 		return (pciide_lookup_product(id, pciide_nvidia_products));
373 	}
374 	return (NULL);
375 }
376 
377 static int
378 viaide_match(device_t parent, cfdata_t match, void *aux)
379 {
380 	const struct pci_attach_args *pa = aux;
381 
382 	if (viaide_lookup(pa->pa_id) != NULL)
383 		return (2);
384 	return (0);
385 }
386 
387 static void
388 viaide_attach(device_t parent, device_t self, void *aux)
389 {
390 	const struct pci_attach_args *pa = aux;
391 	struct pciide_softc *sc = device_private(self);
392 	const struct pciide_product_desc *pp;
393 
394 	sc->sc_wdcdev.sc_atac.atac_dev = self;
395 
396 	pp = viaide_lookup(pa->pa_id);
397 	if (pp == NULL)
398 		panic("viaide_attach");
399 	pciide_common_attach(sc, pa, pp);
400 
401 	if (!pmf_device_register(self, viaide_suspend, viaide_resume))
402 		aprint_error_dev(self, "couldn't establish power handler\n");
403 }
404 
405 static int
406 via_pcib_match(const struct pci_attach_args *pa)
407 {
408 	if (PCI_CLASS(pa->pa_class) == PCI_CLASS_BRIDGE &&
409 	    PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_BRIDGE_ISA &&
410 	    PCI_VENDOR(pa->pa_id) == PCI_VENDOR_VIATECH)
411 		return (1);
412 	return 0;
413 }
414 
415 static bool
416 viaide_suspend(device_t dv, const pmf_qual_t *qual)
417 {
418 	struct pciide_softc *sc = device_private(dv);
419 
420 	sc->sc_pm_reg[0] = pci_conf_read(sc->sc_pc, sc->sc_tag, APO_IDECONF(sc));
421 	/* APO_DATATIM(sc) includes APO_UDMA(sc) */
422 	sc->sc_pm_reg[1] = pci_conf_read(sc->sc_pc, sc->sc_tag, APO_DATATIM(sc));
423 	/* This two are VIA-only, but should be ignored by other devices. */
424 	sc->sc_pm_reg[2] = pci_conf_read(sc->sc_pc, sc->sc_tag, APO_CTLMISC(sc));
425 	sc->sc_pm_reg[3] = pci_conf_read(sc->sc_pc, sc->sc_tag, APO_MISCTIM(sc));
426 
427 	return true;
428 }
429 
430 static bool
431 viaide_resume(device_t dv, const pmf_qual_t *qual)
432 {
433 	struct pciide_softc *sc = device_private(dv);
434 
435 	pci_conf_write(sc->sc_pc, sc->sc_tag, APO_IDECONF(sc),
436 	    sc->sc_pm_reg[0]);
437 	pci_conf_write(sc->sc_pc, sc->sc_tag, APO_DATATIM(sc),
438 	    sc->sc_pm_reg[1]);
439 	/* This two are VIA-only, but should be ignored by other devices. */
440 	pci_conf_write(sc->sc_pc, sc->sc_tag, APO_CTLMISC(sc),
441 	    sc->sc_pm_reg[2]);
442 	pci_conf_write(sc->sc_pc, sc->sc_tag, APO_MISCTIM(sc),
443 	    sc->sc_pm_reg[3]);
444 
445 	return true;
446 }
447 
448 static void
449 via_chip_map(struct pciide_softc *sc, const struct pci_attach_args *pa)
450 {
451 	struct pciide_channel *cp;
452 	pcireg_t interface = PCI_INTERFACE(pa->pa_class);
453 	pcireg_t vendor = PCI_VENDOR(pa->pa_id);
454 	int channel;
455 	u_int32_t ideconf;
456 	pcireg_t pcib_id, pcib_class;
457 	struct pci_attach_args pcib_pa;
458 
459 	if (pciide_chipen(sc, pa) == 0)
460 		return;
461 
462 	switch (vendor) {
463 	case PCI_VENDOR_VIATECH:
464 		switch (PCI_PRODUCT(pa->pa_id)) {
465 		case PCI_PRODUCT_VIATECH_VT6410_RAID:
466 			aprint_normal_dev(sc->sc_wdcdev.sc_atac.atac_dev,
467 			    "VIA Technologies VT6410 IDE controller\n");
468 			sc->sc_wdcdev.sc_atac.atac_udma_cap = 6;
469 			interface = PCIIDE_INTERFACE_BUS_MASTER_DMA |
470 			    PCIIDE_INTERFACE_PCI(0) | PCIIDE_INTERFACE_PCI(1);
471 			break;
472 		case PCI_PRODUCT_VIATECH_VX900_IDE:
473 			aprint_normal_dev(sc->sc_wdcdev.sc_atac.atac_dev,
474 			    "VIA Technologies VX900 ATA133 controller\n");
475 			sc->sc_wdcdev.sc_atac.atac_udma_cap = 6;
476 			break;
477 		default:
478 			/*
479 			 * get a PCI tag for the ISA bridge.
480 			 */
481 			if (pci_find_device(&pcib_pa, via_pcib_match) == 0)
482 				goto unknown;
483 			pcib_id = pcib_pa.pa_id;
484 			pcib_class = pcib_pa.pa_class;
485 			aprint_normal_dev(sc->sc_wdcdev.sc_atac.atac_dev,
486 			    "VIA Technologies ");
487 			switch (PCI_PRODUCT(pcib_id)) {
488 			case PCI_PRODUCT_VIATECH_VT82C586_ISA:
489 				aprint_normal("VT82C586 (Apollo VP) ");
490 				if(PCI_REVISION(pcib_class) >= 0x02) {
491 					aprint_normal("ATA33 controller\n");
492 					sc->sc_wdcdev.sc_atac.atac_udma_cap = 2;
493 				} else {
494 					aprint_normal("controller\n");
495 					sc->sc_wdcdev.sc_atac.atac_udma_cap = 0;
496 				}
497 				break;
498 			case PCI_PRODUCT_VIATECH_VT82C596A:
499 				aprint_normal("VT82C596A (Apollo Pro) ");
500 				if (PCI_REVISION(pcib_class) >= 0x12) {
501 					aprint_normal("ATA66 controller\n");
502 					sc->sc_wdcdev.sc_atac.atac_udma_cap = 4;
503 				} else {
504 					aprint_normal("ATA33 controller\n");
505 					sc->sc_wdcdev.sc_atac.atac_udma_cap = 2;
506 				}
507 				break;
508 			case PCI_PRODUCT_VIATECH_VT82C686A_ISA:
509 				aprint_normal("VT82C686A (Apollo KX133) ");
510 				if (PCI_REVISION(pcib_class) >= 0x40) {
511 					aprint_normal("ATA100 controller\n");
512 					sc->sc_wdcdev.sc_atac.atac_udma_cap = 5;
513 				} else {
514 					aprint_normal("ATA66 controller\n");
515 					sc->sc_wdcdev.sc_atac.atac_udma_cap = 4;
516 				}
517 				break;
518 			case PCI_PRODUCT_VIATECH_VT8231:
519 				aprint_normal("VT8231 ATA100 controller\n");
520 				sc->sc_wdcdev.sc_atac.atac_udma_cap = 5;
521 				break;
522 			case PCI_PRODUCT_VIATECH_VT8233:
523 				aprint_normal("VT8233 ATA100 controller\n");
524 				sc->sc_wdcdev.sc_atac.atac_udma_cap = 5;
525 				break;
526 			case PCI_PRODUCT_VIATECH_VT8233A:
527 				aprint_normal("VT8233A ATA133 controller\n");
528 				sc->sc_wdcdev.sc_atac.atac_udma_cap = 6;
529 				break;
530 			case PCI_PRODUCT_VIATECH_VT8235:
531 				aprint_normal("VT8235 ATA133 controller\n");
532 				sc->sc_wdcdev.sc_atac.atac_udma_cap = 6;
533 				break;
534 			case PCI_PRODUCT_VIATECH_VT8237:
535 				aprint_normal("VT8237 ATA133 controller\n");
536 				sc->sc_wdcdev.sc_atac.atac_udma_cap = 6;
537 				break;
538 			case PCI_PRODUCT_VIATECH_VT8237A_ISA:
539 				aprint_normal("VT8237A ATA133 controller\n");
540 				sc->sc_wdcdev.sc_atac.atac_udma_cap = 6;
541 				break;
542 			case PCI_PRODUCT_VIATECH_CX700:
543 				aprint_normal("CX700 ATA133 controller\n");
544 				sc->sc_wdcdev.sc_atac.atac_udma_cap = 6;
545 				break;
546 			case PCI_PRODUCT_VIATECH_VT8251:
547 				aprint_normal("VT8251 ATA133 controller\n");
548 				sc->sc_wdcdev.sc_atac.atac_udma_cap = 6;
549 				break;
550 			default:
551 		unknown:
552 				aprint_normal("unknown VIA ATA controller\n");
553 				sc->sc_wdcdev.sc_atac.atac_udma_cap = 0;
554 			}
555 			break;
556 		}
557 		sc->sc_apo_regbase = APO_VIA_REGBASE;
558 		break;
559 	case PCI_VENDOR_AMD:
560 		switch (sc->sc_pp->ide_product) {
561 		case PCI_PRODUCT_AMD_PBC8111_IDE:
562 			sc->sc_wdcdev.sc_atac.atac_udma_cap = 6;
563 			break;
564 		case PCI_PRODUCT_AMD_CS5536_IDE:
565 		case PCI_PRODUCT_AMD_PBC766_IDE:
566 		case PCI_PRODUCT_AMD_PBC768_IDE:
567 			sc->sc_wdcdev.sc_atac.atac_udma_cap = 5;
568 			break;
569 		default:
570 			sc->sc_wdcdev.sc_atac.atac_udma_cap = 4;
571 		}
572 		sc->sc_apo_regbase = APO_AMD_REGBASE;
573 		break;
574 	case PCI_VENDOR_NVIDIA:
575 		switch (sc->sc_pp->ide_product) {
576 		case PCI_PRODUCT_NVIDIA_NFORCE_ATA100:
577 			sc->sc_wdcdev.sc_atac.atac_udma_cap = 5;
578 			break;
579 		case PCI_PRODUCT_NVIDIA_NFORCE2_ATA133:
580 		case PCI_PRODUCT_NVIDIA_NFORCE2_400_ATA133:
581 		case PCI_PRODUCT_NVIDIA_NFORCE3_ATA133:
582 		case PCI_PRODUCT_NVIDIA_NFORCE3_250_ATA133:
583 		case PCI_PRODUCT_NVIDIA_NFORCE4_ATA133:
584 		case PCI_PRODUCT_NVIDIA_NFORCE430_ATA133:
585 		case PCI_PRODUCT_NVIDIA_MCP04_IDE:
586 		case PCI_PRODUCT_NVIDIA_MCP55_IDE:
587 		case PCI_PRODUCT_NVIDIA_MCP61_IDE:
588 		case PCI_PRODUCT_NVIDIA_MCP65_IDE:
589 		case PCI_PRODUCT_NVIDIA_MCP67_IDE:
590 		case PCI_PRODUCT_NVIDIA_MCP73_IDE:
591 		case PCI_PRODUCT_NVIDIA_MCP77_IDE:
592 			sc->sc_wdcdev.sc_atac.atac_udma_cap = 6;
593 			break;
594 		}
595 		sc->sc_apo_regbase = APO_NVIDIA_REGBASE;
596 		break;
597 	default:
598 		panic("via_chip_map: unknown vendor");
599 	}
600 
601 	aprint_verbose_dev(sc->sc_wdcdev.sc_atac.atac_dev,
602 	    "bus-master DMA support present");
603 	pciide_mapreg_dma(sc, pa);
604 	aprint_verbose("\n");
605 	sc->sc_wdcdev.sc_atac.atac_cap = ATAC_CAP_DATA16 | ATAC_CAP_DATA32;
606 	if (sc->sc_dma_ok) {
607 		sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_DMA;
608 		sc->sc_wdcdev.irqack = pciide_irqack;
609 		if (sc->sc_wdcdev.sc_atac.atac_udma_cap > 0)
610 			sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_UDMA;
611 	}
612 	sc->sc_wdcdev.sc_atac.atac_pio_cap = 4;
613 	sc->sc_wdcdev.sc_atac.atac_dma_cap = 2;
614 	sc->sc_wdcdev.sc_atac.atac_set_modes = via_setup_channel;
615 	sc->sc_wdcdev.sc_atac.atac_channels = sc->wdc_chanarray;
616 	sc->sc_wdcdev.sc_atac.atac_nchannels = PCIIDE_NUM_CHANNELS;
617 
618 	if (PCI_CLASS(pa->pa_class) == PCI_CLASS_MASS_STORAGE &&
619 	    PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_MASS_STORAGE_RAID)
620 		sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_RAID;
621 
622 	wdc_allocate_regs(&sc->sc_wdcdev);
623 
624 	ATADEBUG_PRINT(("via_chip_map: old APO_IDECONF=0x%x, "
625 	    "APO_CTLMISC=0x%x, APO_DATATIM=0x%x, APO_UDMA=0x%x\n",
626 	    pci_conf_read(sc->sc_pc, sc->sc_tag, APO_IDECONF(sc)),
627 	    pci_conf_read(sc->sc_pc, sc->sc_tag, APO_CTLMISC(sc)),
628 	    pci_conf_read(sc->sc_pc, sc->sc_tag, APO_DATATIM(sc)),
629 	    pci_conf_read(sc->sc_pc, sc->sc_tag, APO_UDMA(sc))),
630 	    DEBUG_PROBE);
631 
632 	ideconf = pci_conf_read(sc->sc_pc, sc->sc_tag, APO_IDECONF(sc));
633 	for (channel = 0; channel < sc->sc_wdcdev.sc_atac.atac_nchannels;
634 	     channel++) {
635 		cp = &sc->pciide_channels[channel];
636 		if (pciide_chansetup(sc, channel, interface) == 0)
637 			continue;
638 
639 		if ((ideconf & APO_IDECONF_EN(channel)) == 0) {
640 			aprint_normal_dev(sc->sc_wdcdev.sc_atac.atac_dev,
641 			    "%s channel ignored (disabled)\n", cp->name);
642 			cp->ata_channel.ch_flags |= ATACH_DISABLED;
643 			continue;
644 		}
645 		via_mapchan(pa, cp, interface, pciide_pci_intr);
646 	}
647 }
648 
649 static void
650 via_mapchan(const struct pci_attach_args *pa,	struct pciide_channel *cp,
651     pcireg_t interface, int (*pci_intr)(void *))
652 {
653 	struct ata_channel *wdc_cp;
654 	struct pciide_softc *sc;
655 	prop_bool_t compat_nat_enable;
656 
657 	wdc_cp = &cp->ata_channel;
658 	sc = CHAN_TO_PCIIDE(&cp->ata_channel);
659 	compat_nat_enable = prop_dictionary_get(
660 	    device_properties(sc->sc_wdcdev.sc_atac.atac_dev),
661 	      "use-compat-native-irq");
662 
663 	if (interface & PCIIDE_INTERFACE_PCI(wdc_cp->ch_channel)) {
664 		/* native mode with irq 14/15 requested? */
665 		if (compat_nat_enable != NULL &&
666 		    prop_bool_true(compat_nat_enable))
667 			via_mapregs_compat_native(pa, cp);
668 		else
669 			pciide_mapregs_native(pa, cp, pci_intr);
670 	} else {
671 		pciide_mapregs_compat(pa, cp, wdc_cp->ch_channel);
672 		if ((cp->ata_channel.ch_flags & ATACH_DISABLED) == 0)
673 			pciide_map_compat_intr(pa, cp, wdc_cp->ch_channel);
674 	}
675 	wdcattach(wdc_cp);
676 }
677 
678 /*
679  * At least under certain (mis)configurations (e.g. on the "Pegasos" board)
680  * the VT8231-IDE's native mode only works with irq 14/15, and cannot be
681  * programmed to use a single native PCI irq alone. So we install an interrupt
682  * handler for each channel, as in compatibility mode.
683  */
684 static void
685 via_mapregs_compat_native(const struct pci_attach_args *pa,
686     struct pciide_channel *cp)
687 {
688 	struct ata_channel *wdc_cp;
689 	struct pciide_softc *sc;
690 
691 	wdc_cp = &cp->ata_channel;
692 	sc = CHAN_TO_PCIIDE(&cp->ata_channel);
693 
694 	/* XXX prevent pciide_mapregs_native from installing a handler */
695 	if (sc->sc_pci_ih == NULL)
696 		sc->sc_pci_ih = (void *)~0;
697 	pciide_mapregs_native(pa, cp, NULL);
698 
699 	/* interrupts are fixed to 14/15, as in compatibility mode */
700 	cp->compat = 1;
701 	if ((wdc_cp->ch_flags & ATACH_DISABLED) == 0) {
702 #ifdef __HAVE_PCIIDE_MACHDEP_COMPAT_INTR_ESTABLISH
703 		cp->ih = pciide_machdep_compat_intr_establish(
704 		    sc->sc_wdcdev.sc_atac.atac_dev, pa, wdc_cp->ch_channel,
705 		    pciide_compat_intr, cp);
706 		if (cp->ih == NULL) {
707 #endif
708 			aprint_error_dev(sc->sc_wdcdev.sc_atac.atac_dev,
709 			    "no compatibility interrupt for "
710 			    "use by %s channel\n", cp->name);
711 			wdc_cp->ch_flags |= ATACH_DISABLED;
712 #ifdef __HAVE_PCIIDE_MACHDEP_COMPAT_INTR_ESTABLISH
713 		}
714 		sc->sc_pci_ih = cp->ih;  /* XXX */
715 #endif
716 	}
717 }
718 
719 static void
720 via_setup_channel(struct ata_channel *chp)
721 {
722 	u_int32_t udmatim_reg, datatim_reg;
723 	u_int8_t idedma_ctl;
724 	int mode, drive, s;
725 	struct ata_drive_datas *drvp;
726 	struct atac_softc *atac = chp->ch_atac;
727 	struct pciide_channel *cp = CHAN_TO_PCHAN(chp);
728 	struct pciide_softc *sc = CHAN_TO_PCIIDE(chp);
729 #ifndef PCIIDE_AMD756_ENABLEDMA
730 	int rev = PCI_REVISION(
731 	    pci_conf_read(sc->sc_pc, sc->sc_tag, PCI_CLASS_REG));
732 #endif
733 
734 	idedma_ctl = 0;
735 	datatim_reg = pci_conf_read(sc->sc_pc, sc->sc_tag, APO_DATATIM(sc));
736 	udmatim_reg = pci_conf_read(sc->sc_pc, sc->sc_tag, APO_UDMA(sc));
737 	datatim_reg &= ~APO_DATATIM_MASK(chp->ch_channel);
738 	udmatim_reg &= ~APO_UDMA_MASK(chp->ch_channel);
739 
740 	/* setup DMA if needed */
741 	pciide_channel_dma_setup(cp);
742 
743 	for (drive = 0; drive < 2; drive++) {
744 		drvp = &chp->ch_drive[drive];
745 		/* If no drive, skip */
746 		if ((drvp->drive_flags & DRIVE) == 0)
747 			continue;
748 		/* add timing values, setup DMA if needed */
749 		if (((drvp->drive_flags & DRIVE_DMA) == 0 &&
750 		    (drvp->drive_flags & DRIVE_UDMA) == 0)) {
751 			mode = drvp->PIO_mode;
752 			goto pio;
753 		}
754 		if ((atac->atac_cap & ATAC_CAP_UDMA) &&
755 		    (drvp->drive_flags & DRIVE_UDMA)) {
756 			/* use Ultra/DMA */
757 			s = splbio();
758 			drvp->drive_flags &= ~DRIVE_DMA;
759 			splx(s);
760 			udmatim_reg |= APO_UDMA_EN(chp->ch_channel, drive) |
761 			    APO_UDMA_EN_MTH(chp->ch_channel, drive);
762 			switch (PCI_VENDOR(sc->sc_pci_id)) {
763 			case PCI_VENDOR_VIATECH:
764 				if (sc->sc_wdcdev.sc_atac.atac_udma_cap == 6) {
765 					/* 8233a */
766 					udmatim_reg |= APO_UDMA_TIME(
767 					    chp->ch_channel,
768 					    drive,
769 					    via_udma133_tim[drvp->UDMA_mode]);
770 				} else if (sc->sc_wdcdev.sc_atac.atac_udma_cap == 5) {
771 					/* 686b */
772 					udmatim_reg |= APO_UDMA_TIME(
773 					    chp->ch_channel,
774 					    drive,
775 					    via_udma100_tim[drvp->UDMA_mode]);
776 				} else if (sc->sc_wdcdev.sc_atac.atac_udma_cap == 4) {
777 					/* 596b or 686a */
778 					udmatim_reg |= APO_UDMA_CLK66(
779 					    chp->ch_channel);
780 					udmatim_reg |= APO_UDMA_TIME(
781 					    chp->ch_channel,
782 					    drive,
783 					    via_udma66_tim[drvp->UDMA_mode]);
784 				} else {
785 					/* 596a or 586b */
786 					udmatim_reg |= APO_UDMA_TIME(
787 					    chp->ch_channel,
788 					    drive,
789 					    via_udma33_tim[drvp->UDMA_mode]);
790 				}
791 				break;
792 			case PCI_VENDOR_AMD:
793 			case PCI_VENDOR_NVIDIA:
794 				udmatim_reg |= APO_UDMA_TIME(chp->ch_channel,
795 				    drive, amd7x6_udma_tim[drvp->UDMA_mode]);
796 				 break;
797 			}
798 			/* can use PIO timings, MW DMA unused */
799 			mode = drvp->PIO_mode;
800 		} else {
801 			/* use Multiword DMA, but only if revision is OK */
802 			s = splbio();
803 			drvp->drive_flags &= ~DRIVE_UDMA;
804 			splx(s);
805 #ifndef PCIIDE_AMD756_ENABLEDMA
806 			/*
807 			 * The workaround doesn't seem to be necessary
808 			 * with all drives, so it can be disabled by
809 			 * PCIIDE_AMD756_ENABLEDMA. It causes a hard hang if
810 			 * triggered.
811 			 */
812 			if (PCI_VENDOR(sc->sc_pci_id) == PCI_VENDOR_AMD &&
813 			    sc->sc_pp->ide_product ==
814 			    PCI_PRODUCT_AMD_PBC756_IDE &&
815 			    AMD756_CHIPREV_DISABLEDMA(rev)) {
816 				aprint_normal(
817 				    "%s:%d:%d: multi-word DMA disabled due "
818 				    "to chip revision\n",
819 				    device_xname(
820 				      sc->sc_wdcdev.sc_atac.atac_dev),
821 				    chp->ch_channel, drive);
822 				mode = drvp->PIO_mode;
823 				s = splbio();
824 				drvp->drive_flags &= ~DRIVE_DMA;
825 				splx(s);
826 				goto pio;
827 			}
828 #endif
829 			/* mode = min(pio, dma+2) */
830 			if (drvp->PIO_mode <= (drvp->DMA_mode + 2))
831 				mode = drvp->PIO_mode;
832 			else
833 				mode = drvp->DMA_mode + 2;
834 		}
835 		idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
836 
837 pio:		/* setup PIO mode */
838 		if (mode <= 2) {
839 			drvp->DMA_mode = 0;
840 			drvp->PIO_mode = 0;
841 			mode = 0;
842 		} else {
843 			drvp->PIO_mode = mode;
844 			drvp->DMA_mode = mode - 2;
845 		}
846 		datatim_reg |=
847 		    APO_DATATIM_PULSE(chp->ch_channel, drive,
848 			apollo_pio_set[mode]) |
849 		    APO_DATATIM_RECOV(chp->ch_channel, drive,
850 			apollo_pio_rec[mode]);
851 	}
852 	if (idedma_ctl != 0) {
853 		/* Add software bits in status register */
854 		bus_space_write_1(sc->sc_dma_iot, cp->dma_iohs[IDEDMA_CTL], 0,
855 		    idedma_ctl);
856 	}
857 	pci_conf_write(sc->sc_pc, sc->sc_tag, APO_DATATIM(sc), datatim_reg);
858 	pci_conf_write(sc->sc_pc, sc->sc_tag, APO_UDMA(sc), udmatim_reg);
859 	ATADEBUG_PRINT(("via_chip_map: APO_DATATIM=0x%x, APO_UDMA=0x%x\n",
860 	    pci_conf_read(sc->sc_pc, sc->sc_tag, APO_DATATIM(sc)),
861 	    pci_conf_read(sc->sc_pc, sc->sc_tag, APO_UDMA(sc))), DEBUG_PROBE);
862 }
863 
864 static int
865 via_sata_chip_map_common(struct pciide_softc *sc,
866     const struct pci_attach_args *cpa)
867 {
868 	pcireg_t csr;
869 	int maptype, ret;
870 	struct pci_attach_args pac, *pa = &pac;
871 
872 	pac = *cpa;
873 
874 	if (pciide_chipen(sc, pa) == 0)
875 		return 0;
876 
877 	aprint_verbose_dev(sc->sc_wdcdev.sc_atac.atac_dev,
878 	    "bus-master DMA support present");
879 	pciide_mapreg_dma(sc, pa);
880 	aprint_verbose("\n");
881 
882 	if (sc->sc_dma_ok) {
883 		sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_UDMA | ATAC_CAP_DMA;
884 		sc->sc_wdcdev.irqack = pciide_irqack;
885 	}
886 	sc->sc_wdcdev.sc_atac.atac_pio_cap = 4;
887 	sc->sc_wdcdev.sc_atac.atac_dma_cap = 2;
888 	sc->sc_wdcdev.sc_atac.atac_udma_cap = 6;
889 
890 	sc->sc_wdcdev.sc_atac.atac_channels = sc->wdc_chanarray;
891 	sc->sc_wdcdev.sc_atac.atac_nchannels = PCIIDE_NUM_CHANNELS;
892 	sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_DATA16 | ATAC_CAP_DATA32;
893 	sc->sc_wdcdev.sc_atac.atac_set_modes = sata_setup_channel;
894 
895 	if (PCI_CLASS(pa->pa_class) == PCI_CLASS_MASS_STORAGE &&
896 	    PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_MASS_STORAGE_RAID)
897 		sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_RAID;
898 
899 	wdc_allocate_regs(&sc->sc_wdcdev);
900 	maptype = pci_mapreg_type(pa->pa_pc, pa->pa_tag,
901 	    PCI_MAPREG_START + 0x14);
902 	switch(maptype) {
903 	case PCI_MAPREG_TYPE_IO:
904 		ret = pci_mapreg_map(pa, PCI_MAPREG_START + 0x14,
905 		    PCI_MAPREG_TYPE_IO, 0, &sc->sc_ba5_st, &sc->sc_ba5_sh,
906 		    NULL, &sc->sc_ba5_ss);
907 		break;
908 	case PCI_MAPREG_MEM_TYPE_32BIT:
909 		/*
910 		 * Enable memory-space access if it isn't already there.
911 		 */
912 		csr = pci_conf_read(pa->pa_pc, pa->pa_tag,
913 		    PCI_COMMAND_STATUS_REG);
914 		if ((csr & PCI_COMMAND_MEM_ENABLE) == 0 &&
915 		    (pa->pa_flags & PCI_FLAGS_MEM_OKAY) != 0) {
916 
917 			pci_conf_write(pa->pa_pc, pa->pa_tag,
918 			    PCI_COMMAND_STATUS_REG,
919 			    csr | PCI_COMMAND_MEM_ENABLE);
920 		}
921 
922 		ret = pci_mapreg_map(pa, PCI_MAPREG_START + 0x14,
923 		    PCI_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_32BIT,
924 		    0, &sc->sc_ba5_st, &sc->sc_ba5_sh,
925 		    NULL, &sc->sc_ba5_ss);
926 		break;
927 	default:
928 		aprint_error_dev(sc->sc_wdcdev.sc_atac.atac_dev,
929 		    "couldn't map sata regs, unsupported maptype (0x%x)\n",
930 		    maptype);
931 		return 0;
932 	}
933 	if (ret != 0) {
934 		aprint_error_dev(sc->sc_wdcdev.sc_atac.atac_dev,
935 		    "couldn't map sata regs\n");
936 		return 0;
937 	}
938 	return 1;
939 }
940 
941 static void
942 via_sata_chip_map(struct pciide_softc *sc, const struct pci_attach_args *pa,
943     int satareg_shift)
944 {
945 	struct pciide_channel *cp;
946 	struct ata_channel *wdc_cp;
947 	struct wdc_regs *wdr;
948 	pcireg_t interface;
949 	int channel;
950 
951 	interface = PCI_INTERFACE(pa->pa_class);
952 
953 	if (via_sata_chip_map_common(sc, pa) == 0)
954 		return;
955 
956 	if (interface == 0) {
957 		ATADEBUG_PRINT(("via_sata_chip_map interface == 0\n"),
958 		    DEBUG_PROBE);
959 		interface = PCIIDE_INTERFACE_BUS_MASTER_DMA |
960 		    PCIIDE_INTERFACE_PCI(0) | PCIIDE_INTERFACE_PCI(1);
961 	}
962 
963 	for (channel = 0; channel < sc->sc_wdcdev.sc_atac.atac_nchannels;
964 	     channel++) {
965 		cp = &sc->pciide_channels[channel];
966 		if (pciide_chansetup(sc, channel, interface) == 0)
967 			continue;
968 		wdc_cp = &cp->ata_channel;
969 		wdr = CHAN_TO_WDC_REGS(wdc_cp);
970 		wdr->sata_iot = sc->sc_ba5_st;
971 		wdr->sata_baseioh = sc->sc_ba5_sh;
972 		if (bus_space_subregion(wdr->sata_iot, wdr->sata_baseioh,
973 		    (wdc_cp->ch_channel << satareg_shift) + 0x0, 4,
974 		    &wdr->sata_status) != 0) {
975 			aprint_error_dev(sc->sc_wdcdev.sc_atac.atac_dev,
976 			    "couldn't map channel %d sata_status regs\n",
977 			    wdc_cp->ch_channel);
978 			continue;
979 		}
980 		if (bus_space_subregion(wdr->sata_iot, wdr->sata_baseioh,
981 		    (wdc_cp->ch_channel << satareg_shift) + 0x4, 4,
982 		    &wdr->sata_error) != 0) {
983 			aprint_error_dev(sc->sc_wdcdev.sc_atac.atac_dev,
984 			    "couldn't map channel %d sata_error regs\n",
985 			    wdc_cp->ch_channel);
986 			continue;
987 		}
988 		if (bus_space_subregion(wdr->sata_iot, wdr->sata_baseioh,
989 		    (wdc_cp->ch_channel << satareg_shift) + 0x8, 4,
990 		    &wdr->sata_control) != 0) {
991 			aprint_error_dev(sc->sc_wdcdev.sc_atac.atac_dev,
992 			    "couldn't map channel %d sata_control regs\n",
993 			    wdc_cp->ch_channel);
994 			continue;
995 		}
996 		sc->sc_wdcdev.sc_atac.atac_probe = wdc_sataprobe;
997 		pciide_mapchan(pa, cp, interface, pciide_pci_intr);
998 	}
999 }
1000 
1001 static void
1002 via_sata_chip_map_6(struct pciide_softc *sc, const struct pci_attach_args *pa)
1003 {
1004 	via_sata_chip_map(sc, pa, 6);
1005 }
1006 
1007 static void
1008 via_sata_chip_map_7(struct pciide_softc *sc, const struct pci_attach_args *pa)
1009 {
1010 	via_sata_chip_map(sc, pa, 7);
1011 }
1012 
1013 static void
1014 via_vt6421_mapreg_dma(struct pciide_softc *sc, const struct pci_attach_args *pa)
1015 {
1016 	struct pciide_channel *pc;
1017 	int chan, reg;
1018 	bus_size_t size;
1019 
1020 	sc->sc_dma_ok = (pci_mapreg_map(pa, PCIIDE_REG_BUS_MASTER_DMA,
1021 	    PCI_MAPREG_TYPE_IO, 0, &sc->sc_dma_iot, &sc->sc_dma_ioh,
1022 	    NULL, &sc->sc_dma_ios) == 0);
1023 	sc->sc_dmat = pa->pa_dmat;
1024 	if (sc->sc_dma_ok == 0) {
1025 		aprint_verbose(", but unused (couldn't map registers)");
1026 	} else {
1027 		sc->sc_wdcdev.dma_arg = sc;
1028 		sc->sc_wdcdev.dma_init = pciide_dma_init;
1029 		sc->sc_wdcdev.dma_start = pciide_dma_start;
1030 		sc->sc_wdcdev.dma_finish = pciide_dma_finish;
1031 	}
1032 
1033 	if (device_cfdata(sc->sc_wdcdev.sc_atac.atac_dev)->cf_flags &
1034 	    PCIIDE_OPTIONS_NODMA) {
1035 		aprint_verbose(
1036 		    ", but unused (forced off by config file)");
1037 		sc->sc_dma_ok = 0;
1038 	}
1039 
1040 	if (sc->sc_dma_ok == 0)
1041 		return;
1042 
1043 	for (chan = 0; chan < 4; chan++) {
1044 		pc = &sc->pciide_channels[chan];
1045 		for (reg = 0; reg < IDEDMA_NREGS; reg++) {
1046 			size = 4;
1047 			if (size > (IDEDMA_SCH_OFFSET - reg))
1048 				size = IDEDMA_SCH_OFFSET - reg;
1049 			if (bus_space_subregion(sc->sc_dma_iot, sc->sc_dma_ioh,
1050 			    IDEDMA_SCH_OFFSET * chan + reg, size,
1051 			    &pc->dma_iohs[reg]) != 0) {
1052 				sc->sc_dma_ok = 0;
1053 				aprint_verbose(", but can't subregion offset "
1054 				               "%d size %lu",
1055 					       reg, (u_long)size);
1056 				return;
1057 			}
1058 		}
1059 	}
1060 }
1061 
1062 static int
1063 via_vt6421_chansetup(struct pciide_softc *sc, int channel)
1064 {
1065 	struct pciide_channel *cp = &sc->pciide_channels[channel];
1066 
1067 	sc->wdc_chanarray[channel] = &cp->ata_channel;
1068 
1069 	cp->ata_channel.ch_channel = channel;
1070 	cp->ata_channel.ch_atac = &sc->sc_wdcdev.sc_atac;
1071 	cp->ata_channel.ch_queue =
1072 	    malloc(sizeof(struct ata_queue), M_DEVBUF, M_NOWAIT);
1073 	cp->ata_channel.ch_ndrive = 2;
1074 	if (cp->ata_channel.ch_queue == NULL) {
1075 		aprint_error("%s channel %d: "
1076 		    "can't allocate memory for command queue",
1077 		    device_xname(sc->sc_wdcdev.sc_atac.atac_dev), channel);
1078 		return 0;
1079 	}
1080 	return 1;
1081 }
1082 
1083 static void
1084 via_sata_chip_map_new(struct pciide_softc *sc,
1085     const struct pci_attach_args *pa)
1086 {
1087 	struct pciide_channel *cp;
1088 	struct ata_channel *wdc_cp;
1089 	struct wdc_regs *wdr;
1090 	int channel;
1091 	pci_intr_handle_t intrhandle;
1092 	const char *intrstr;
1093 	int i;
1094 
1095 	if (pciide_chipen(sc, pa) == 0)
1096 		return;
1097 
1098 	sc->sc_apo_regbase = APO_VIA_VT6421_REGBASE;
1099 
1100 	if (pci_mapreg_map(pa, PCI_BAR(5), PCI_MAPREG_TYPE_IO, 0,
1101 	    &sc->sc_ba5_st, &sc->sc_ba5_sh, NULL, &sc->sc_ba5_ss) != 0) {
1102 		aprint_error_dev(sc->sc_wdcdev.sc_atac.atac_dev,
1103 		    "couldn't map SATA regs\n");
1104 	}
1105 
1106 	aprint_verbose_dev(sc->sc_wdcdev.sc_atac.atac_dev,
1107 	    "bus-master DMA support present");
1108 	via_vt6421_mapreg_dma(sc, pa);
1109 	aprint_verbose("\n");
1110 
1111 	sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_DATA16 | ATAC_CAP_DATA32;
1112 	sc->sc_wdcdev.sc_atac.atac_pio_cap = 4;
1113 	if (sc->sc_dma_ok) {
1114 		sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_DMA | ATAC_CAP_UDMA;
1115 		sc->sc_wdcdev.irqack = pciide_irqack;
1116 		sc->sc_wdcdev.sc_atac.atac_dma_cap = 2;
1117 		sc->sc_wdcdev.sc_atac.atac_udma_cap = 6;
1118 	}
1119 	sc->sc_wdcdev.sc_atac.atac_set_modes = sata_setup_channel;
1120 
1121 	sc->sc_wdcdev.sc_atac.atac_channels = sc->wdc_chanarray;
1122 	sc->sc_wdcdev.sc_atac.atac_nchannels = 3;
1123 
1124 	wdc_allocate_regs(&sc->sc_wdcdev);
1125 
1126 	if (pci_intr_map(pa, &intrhandle) != 0) {
1127 		aprint_error_dev(sc->sc_wdcdev.sc_atac.atac_dev,
1128 		    "couldn't map native-PCI interrupt\n");
1129 		return;
1130 	}
1131 	intrstr = pci_intr_string(pa->pa_pc, intrhandle);
1132 	sc->sc_pci_ih = pci_intr_establish(pa->pa_pc,
1133 	    intrhandle, IPL_BIO, pciide_pci_intr, sc);
1134 	if (sc->sc_pci_ih == NULL) {
1135 		aprint_error_dev(sc->sc_wdcdev.sc_atac.atac_dev,
1136 		    "couldn't establish native-PCI interrupt");
1137 		if (intrstr != NULL)
1138 		    aprint_error(" at %s", intrstr);
1139 		aprint_error("\n");
1140 		return;
1141 	}
1142 	aprint_normal_dev(sc->sc_wdcdev.sc_atac.atac_dev,
1143 	    "using %s for native-PCI interrupt\n",
1144 	    intrstr ? intrstr : "unknown interrupt");
1145 
1146 	for (channel = 0; channel < sc->sc_wdcdev.sc_atac.atac_nchannels;
1147 	     channel++) {
1148 		cp = &sc->pciide_channels[channel];
1149 		if (via_vt6421_chansetup(sc, channel) == 0)
1150 			continue;
1151 		cp->ata_channel.ch_ndrive = 2;
1152 		wdc_cp = &cp->ata_channel;
1153 		wdr = CHAN_TO_WDC_REGS(wdc_cp);
1154 
1155 		wdr->sata_iot = sc->sc_ba5_st;
1156 		wdr->sata_baseioh = sc->sc_ba5_sh;
1157 		if (bus_space_subregion(wdr->sata_iot, wdr->sata_baseioh,
1158 		    (wdc_cp->ch_channel << 6) + 0x0, 4,
1159 		    &wdr->sata_status) != 0) {
1160 			aprint_error_dev(sc->sc_wdcdev.sc_atac.atac_dev,
1161 			    "couldn't map channel %d sata_status regs\n",
1162 			    wdc_cp->ch_channel);
1163 			continue;
1164 		}
1165 		if (bus_space_subregion(wdr->sata_iot, wdr->sata_baseioh,
1166 		    (wdc_cp->ch_channel << 6) + 0x4, 4,
1167 		    &wdr->sata_error) != 0) {
1168 			aprint_error_dev(sc->sc_wdcdev.sc_atac.atac_dev,
1169 			    "couldn't map channel %d sata_error regs\n",
1170 			    wdc_cp->ch_channel);
1171 			continue;
1172 		}
1173 		if (bus_space_subregion(wdr->sata_iot, wdr->sata_baseioh,
1174 		    (wdc_cp->ch_channel << 6) + 0x8, 4,
1175 		    &wdr->sata_control) != 0) {
1176 			aprint_error_dev(sc->sc_wdcdev.sc_atac.atac_dev,
1177 			    "couldn't map channel %d sata_control regs\n",
1178 			    wdc_cp->ch_channel);
1179 			continue;
1180 		}
1181 
1182 		if (pci_mapreg_map(pa, PCI_BAR(wdc_cp->ch_channel),
1183 		    PCI_MAPREG_TYPE_IO, 0, &wdr->cmd_iot, &wdr->cmd_baseioh,
1184 		    NULL, &wdr->cmd_ios) != 0) {
1185 			aprint_error_dev(sc->sc_wdcdev.sc_atac.atac_dev,
1186 			    "couldn't map %s channel regs\n", cp->name);
1187 		}
1188 		wdr->ctl_iot = wdr->cmd_iot;
1189 		for (i = 0; i < WDC_NREG; i++) {
1190 			if (bus_space_subregion(wdr->cmd_iot,
1191 			    wdr->cmd_baseioh, i, i == 0 ? 4 : 1,
1192 			    &wdr->cmd_iohs[i]) != 0) {
1193 				aprint_error_dev(
1194 				    sc->sc_wdcdev.sc_atac.atac_dev,
1195 				    "couldn't subregion %s "
1196 				    "channel cmd regs\n", cp->name);
1197 				return;
1198 			}
1199 		}
1200 		if (bus_space_subregion(wdr->cmd_iot, wdr->cmd_baseioh,
1201 		    WDC_NREG + 2, 1,  &wdr->ctl_ioh) != 0) {
1202 			aprint_error_dev(sc->sc_wdcdev.sc_atac.atac_dev,
1203 			    "couldn't map channel %d ctl regs\n", channel);
1204 			return;
1205 		}
1206 		wdc_init_shadow_regs(wdc_cp);
1207 		wdr->data32iot = wdr->cmd_iot;
1208 		wdr->data32ioh = wdr->cmd_iohs[wd_data];
1209 		wdcattach(wdc_cp);
1210 	}
1211 }
1212