xref: /netbsd/sys/arch/alpha/alpha/dec_kn300.c (revision 6550d01e) 
1 /* $NetBSD: dec_kn300.c,v 1.37 2009/09/14 02:46:29 mhitch Exp $ */
2 
3 /*
4  * Copyright (c) 1998 by Matthew Jacob
5  * NASA AMES Research Center.
6  * All rights reserved.
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions
10  * are met:
11  * 1. Redistributions of source code must retain the above copyright
12  *    notice immediately at the beginning of the file, without modification,
13  *    this list of conditions, and the following disclaimer.
14  * 2. Redistributions in binary form must reproduce the above copyright
15  *    notice, this list of conditions and the following disclaimer in the
16  *    documentation and/or other materials provided with the distribution.
17  * 3. The name of the author may not be used to endorse or promote products
18  *    derived from this software without specific prior written permission.
19  *
20  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
24  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30  * SUCH DAMAGE.
31  */
32 
33 #include "opt_kgdb.h"
34 
35 #include <sys/cdefs.h>			/* RCS ID & Copyright macro defns */
36 
37 __KERNEL_RCSID(0, "$NetBSD: dec_kn300.c,v 1.37 2009/09/14 02:46:29 mhitch Exp $");
38 
39 #include <sys/param.h>
40 #include <sys/systm.h>
41 #include <sys/device.h>
42 #include <sys/termios.h>
43 #include <sys/conf.h>
44 #include <dev/cons.h>
45 
46 #include <machine/rpb.h>
47 #include <machine/alpha.h>
48 #include <machine/autoconf.h>
49 #include <machine/frame.h>
50 #include <machine/cpuconf.h>
51 
52 #include <dev/ic/comreg.h>
53 #include <dev/ic/comvar.h>
54 
55 #include <dev/isa/isareg.h>
56 #include <dev/isa/isavar.h>
57 #include <dev/ic/i8042reg.h>
58 #include <dev/ic/pckbcvar.h>
59 #include <dev/pci/pcireg.h>
60 #include <dev/pci/pcivar.h>
61 
62 #include <uvm/uvm_extern.h>
63 
64 #include <alpha/mcbus/mcbusreg.h>
65 #include <alpha/mcbus/mcbusvar.h>
66 #include <alpha/pci/mcpciareg.h>
67 #include <alpha/pci/mcpciavar.h>
68 #include <alpha/pci/pci_kn300.h>
69 #include <machine/logout.h>
70 
71 #include <dev/scsipi/scsi_all.h>
72 #include <dev/scsipi/scsipi_all.h>
73 #include <dev/scsipi/scsiconf.h>
74 
75 #include <dev/ic/mlxio.h>
76 #include <dev/ic/mlxvar.h>
77 
78 
79 #include "pckbd.h"
80 
81 #ifndef	CONSPEED
82 #define	CONSPEED	TTYDEF_SPEED
83 #endif
84 static int comcnrate = CONSPEED;
85 
86 void dec_kn300_init(void);
87 void dec_kn300_cons_init(void);
88 static void dec_kn300_device_register(struct device *, void *);
89 static void dec_kn300_mcheck_handler
90 (unsigned long, struct trapframe *, unsigned long, unsigned long);
91 
92 #ifdef KGDB
93 #include <machine/db_machdep.h>
94 
95 static const char *kgdb_devlist[] = {
96 	"com",
97 	NULL,
98 };
99 #endif /* KGDB */
100 
101 #define	ALPHASERVER_4100	"AlphaServer 4100"
102 
103 const struct alpha_variation_table dec_kn300_variations[] = {
104 	{ 0, ALPHASERVER_4100 },
105 	{ 0, NULL },
106 };
107 
108 void
109 dec_kn300_init()
110 {
111 	u_int64_t variation;
112 	int cachesize;
113 
114 	platform.family = ALPHASERVER_4100;
115 
116 	if ((platform.model = alpha_dsr_sysname()) == NULL) {
117 		variation = hwrpb->rpb_variation & SV_ST_MASK;
118 		if ((platform.model = alpha_variation_name(variation,
119 		    dec_kn300_variations)) == NULL)
120 			platform.model = alpha_unknown_sysname();
121 	}
122 
123 	platform.iobus = "mcbus";
124 	platform.cons_init = dec_kn300_cons_init;
125 	platform.device_register = dec_kn300_device_register;
126 	platform.mcheck_handler = dec_kn300_mcheck_handler;
127 
128 	/*
129 	 * Determine B-cache size by looking at the primary (console)
130 	 * MCPCIA's WHOAMI register.
131 	 */
132 	mcpcia_init();
133 
134 	if (mcbus_primary.mcbus_valid) {
135 		switch (mcbus_primary.mcbus_bcache) {
136 		default:
137 		case CPU_BCache_0MB:
138 			/* No B-cache or invalid; default to 1MB. */
139 			/* FALLTHROUGH */
140 
141 		case CPU_BCache_1MB:
142 			cachesize = (1 * 1024 * 1024);
143 			break;
144 
145 		case CPU_BCache_2MB:
146 			cachesize = (2 * 1024 * 1024);
147 			break;
148 
149 		case CPU_BCache_4MB:
150 			cachesize = (4 * 1024 * 1024);
151 			break;
152 		}
153 	} else {
154 		/* Default to 1MB. */
155 		cachesize = (1 * 1024 * 1024);
156 	}
157 
158 	uvmexp.ncolors = atop(cachesize);
159 }
160 
161 void
162 dec_kn300_cons_init()
163 {
164 	struct ctb *ctb;
165 	struct mcpcia_config *ccp;
166 	extern struct mcpcia_config mcpcia_console_configuration;
167 
168 	ccp = &mcpcia_console_configuration;
169 	/* It's already initialized. */
170 
171 	ctb = (struct ctb *)(((char *)hwrpb) + hwrpb->rpb_ctb_off);
172 
173 	switch (ctb->ctb_term_type) {
174 	case CTB_PRINTERPORT:
175 		/* serial console ... */
176 		/*
177 		 * Delay to allow PROM putchars to complete.
178 		 * FIFO depth * character time,
179 		 * character time = (1000000 / (defaultrate / 10))
180 		 */
181 		DELAY(160000000 / comcnrate);
182 		if (comcnattach(&ccp->cc_iot, 0x3f8, comcnrate,
183 		    COM_FREQ, COM_TYPE_NORMAL,
184 		    (TTYDEF_CFLAG & ~(CSIZE | PARENB)) | CS8)) {
185 			panic("can't init serial console");
186 
187 		}
188 		break;
189 
190 	case CTB_GRAPHICS:
191 #if NPCKBD > 0
192 		/* display console ... */
193 		/* XXX */
194 		(void) pckbc_cnattach(&ccp->cc_iot, IO_KBD, KBCMDP,
195 		    PCKBC_KBD_SLOT);
196 
197 		if (CTB_TURBOSLOT_TYPE(ctb->ctb_turboslot) ==
198 		    CTB_TURBOSLOT_TYPE_ISA)
199 			isa_display_console(&ccp->cc_iot, &ccp->cc_memt);
200 		else
201 			pci_display_console(&ccp->cc_iot, &ccp->cc_memt,
202 			    &ccp->cc_pc, CTB_TURBOSLOT_BUS(ctb->ctb_turboslot),
203 			    CTB_TURBOSLOT_SLOT(ctb->ctb_turboslot), 0);
204 #else
205 		panic("not configured to use display && keyboard console");
206 #endif
207 		break;
208 
209 	default:
210 		printf("ctb->ctb_term_type = 0x%lx\n", ctb->ctb_term_type);
211 		printf("ctb->ctb_turboslot = 0x%lx\n", ctb->ctb_turboslot);
212 
213 		panic("consinit: unknown console type %ld",
214 		    ctb->ctb_term_type);
215 	}
216 #ifdef KGDB
217 	/* Attach the KGDB device. */
218 	alpha_kgdb_init(kgdb_devlist, &ccp->cc_iot);
219 #endif /* KGDB */
220 }
221 
222 /* #define	BDEBUG	1 */
223 static void
224 dec_kn300_device_register(struct device *dev, void *aux)
225 {
226 	static int found, initted, diskboot, netboot;
227 	static struct device *primarydev, *pcidev, *ctrlrdev;
228 	struct bootdev_data *b = bootdev_data;
229 	struct device *parent = device_parent(dev);
230 
231 	if (found)
232 		return;
233 
234 	if (!initted) {
235 		diskboot = (strcasecmp(b->protocol, "SCSI") == 0) ||
236 		    (strcasecmp(b->protocol, "RAID") == 0);
237 		netboot = (strcasecmp(b->protocol, "BOOTP") == 0) ||
238 		    (strcasecmp(b->protocol, "MOP") == 0);
239 #ifdef BDEBUG
240 		printf("proto:%s bus:%d slot:%d chan:%d", b->protocol,
241 		    b->bus, b->slot, b->channel);
242 		if (b->remote_address)
243 			printf(" remote_addr:%s", b->remote_address);
244 		printf(" un:%d bdt:%d", b->unit, b->boot_dev_type);
245 		if (b->ctrl_dev_type)
246 			printf(" cdt:%s\n", b->ctrl_dev_type);
247 		else
248 			printf("\n");
249 		printf("diskboot = %d, netboot = %d\n", diskboot, netboot);
250 #endif
251 		initted = 1;
252 	}
253 
254 	if (primarydev == NULL) {
255 		if (!device_is_a(dev, "mcpcia"))
256 			return;
257 		else {
258 			struct mcbus_dev_attach_args *ma = aux;
259 
260 			if (b->bus != ma->ma_mid - 4)
261 				return;
262 			primarydev = dev;
263 #ifdef BDEBUG
264 			printf("\nprimarydev = %s\n", dev->dv_xname);
265 #endif
266 			return;
267 		}
268 	}
269 
270 	if (pcidev == NULL) {
271 		if (!device_is_a(dev, "pci"))
272 			return;
273 		/*
274 		 * Try to find primarydev anywhere in the ancestry.  This is
275 		 * necessary if the PCI bus is hidden behind a bridge.
276 		 */
277 		while (parent) {
278 			if (parent == primarydev)
279 				break;
280 			parent = device_parent(parent);
281 		}
282 		if (!parent)
283 			return;
284 		else {
285 			struct pcibus_attach_args *pba = aux;
286 
287 			if ((b->slot / 1000) != pba->pba_bus)
288 				return;
289 
290 			pcidev = dev;
291 #ifdef BDEBUG
292 			printf("\npcidev = %s\n", dev->dv_xname);
293 #endif
294 			return;
295 		}
296 	}
297 
298 	if (ctrlrdev == NULL) {
299 		if (parent != pcidev)
300 			return;
301 		else {
302 			struct pci_attach_args *pa = aux;
303 			int slot;
304 
305 			slot = pa->pa_bus * 1000 + pa->pa_function * 100 +
306 			    pa->pa_device;
307 			if (b->slot != slot)
308 				return;
309 
310 			if (netboot) {
311 				booted_device = dev;
312 #ifdef BDEBUG
313 				printf("\nbooted_device = %s\n", dev->dv_xname);
314 #endif
315 				found = 1;
316 			} else {
317 				ctrlrdev = dev;
318 #ifdef BDEBUG
319 				printf("\nctrlrdev = %s\n", dev->dv_xname);
320 #endif
321 			}
322 			return;
323 		}
324 	}
325 
326 	if (!diskboot)
327 		return;
328 
329 	if (device_is_a(dev, "sd") ||
330 	    device_is_a(dev, "st") ||
331 	    device_is_a(dev, "cd")) {
332 		struct scsipibus_attach_args *sa = aux;
333 		struct scsipi_periph *periph = sa->sa_periph;
334 		int unit;
335 
336 		if (device_parent(parent) != ctrlrdev)
337 			return;
338 
339 		unit = periph->periph_target * 100 + periph->periph_lun;
340 		if (b->unit != unit)
341 			return;
342 		if (b->channel != periph->periph_channel->chan_channel)
343 			return;
344 
345 		/* we've found it! */
346 		booted_device = dev;
347 #ifdef BDEBUG
348 		printf("\nbooted_device = %s\n", dev->dv_xname);
349 #endif
350 		found = 1;
351 	}
352 
353 	if (device_is_a(dev, "ld") && device_is_a(parent, "mlx")) {
354 		/*
355 		 * Argh!  The attach arguments for ld devices is not
356 		 * consistent, so each supported raid controller requires
357 		 * different checks.
358 		 */
359 		struct mlx_attach_args *mlxa = aux;
360 
361 		if (parent != ctrlrdev)
362 			return;
363 
364 		if (b->unit != mlxa->mlxa_unit)
365 			return;
366 		/* we've found it! */
367 		booted_device = dev;
368 #if 0
369 		printf("\nbooted_device = %s\n", dev->dv_xname);
370 #endif
371 		found = 1;
372 	}
373 }
374 
375 
376 /*
377  * KN300 Machine Check Handlers.
378  */
379 static void kn300_softerr(unsigned long, unsigned long,
380     unsigned long, struct trapframe *);
381 
382 static void kn300_mcheck(unsigned long, unsigned long,
383     unsigned long, struct trapframe *);
384 
385 /*
386  * "soft" error structure in system area for KN300 processor.
387  * It differs from the EV5 'common' structure in a minor but
388  * exceedingly stupid and annoying fashion.
389  */
390 
391 typedef struct {
392 	/*
393 	 * Should be mc_cc_ev5 structure. Contents are the same,
394 	 * just in different places.
395 	 */
396 	u_int64_t	ei_stat;
397 	u_int64_t	ei_addr;
398 	u_int64_t	fill_syndrome;
399 	u_int64_t	isr;
400 	/*
401 	 * Platform Specific Area
402 	 */
403 	u_int32_t	whami;
404 	u_int32_t	sys_env;
405 	u_int64_t	mcpcia_regs;
406 	u_int32_t	pci_rev;
407 	u_int32_t	mc_err0;
408 	u_int32_t	mc_err1;
409 	u_int32_t	cap_err;
410 	u_int32_t	mdpa_stat;
411 	u_int32_t	mdpa_syn;
412 	u_int32_t	mdpb_stat;
413 	u_int32_t	mdpb_syn;
414 	u_int64_t	end_rsvd;
415 } mc_soft300;
416 #define	CAP_ERR_CRDX	204
417 
418 static void
419 kn300_softerr(unsigned long mces, unsigned long type, unsigned long logout, struct trapframe *framep)
420 {
421 	static const char *sys = "system";
422 	static const char *proc = "processor";
423 	int whami;
424 	mc_hdr_ev5 *hdr;
425 	mc_soft300 *ptr;
426 	static const char *fmt1 = "        %-25s = 0x%l016x\n";
427 
428 	hdr = (mc_hdr_ev5 *) logout;
429 	ptr = (mc_soft300 *) (logout + sizeof (*hdr));
430 	whami = alpha_pal_whami();
431 
432 	printf("kn300: CPU ID %d %s correctable error corrected by %s\n", whami,
433 	    (type == ALPHA_SYS_ERROR)?  sys : proc,
434 	    ((hdr->mcheck_code & 0xff00) == (EV5_CORRECTED << 16))? proc :
435 	    (((hdr->mcheck_code & 0xff00) == (CAP_ERR_CRDX << 16)) ?
436 		"I/O Bridge Module" : sys));
437 
438 	printf("    Machine Check Code 0x%lx\n", hdr->mcheck_code);
439 	printf("    Physical Address of Error 0x%lx\n", ptr->ei_addr);
440 	if (ptr->ei_stat & 0x80000000L)
441 		printf("    Corrected ECC Error ");
442 	else
443 		printf("    Other Error");
444 	if (ptr->ei_stat & 0x40000000L)
445 		printf("in Memory ");
446 	else
447 		printf("in B-Cache ");
448 	if (ptr->ei_stat & 0x400000000L)
449 		printf("during I-Cache fill\n");
450 	else
451 		printf("during D-Cache fill\n");
452 
453 	printf(fmt1, "EI Status", ptr->ei_stat);
454 	printf(fmt1, "Fill Syndrome", ptr->fill_syndrome);
455 	printf(fmt1, "Interrupt Status Reg.", ptr->isr);
456 	printf("\n");
457 	printf(fmt1, "Whami Reg.", ptr->whami);
458 	printf(fmt1, "Sys. Env. Reg.", ptr->sys_env);
459 	printf(fmt1, "MCPCIA Regs.", ptr->mcpcia_regs);
460 	printf(fmt1, "PCI Rev. Reg.", ptr->pci_rev);
461 	printf(fmt1, "MC_ERR0 Reg.", ptr->mc_err0);
462 	printf(fmt1, "MC_ERR1 Reg.", ptr->mc_err1);
463 	printf(fmt1, "CAP_ERR Reg.", ptr->cap_err);
464 	printf(fmt1, "MDPA_STAT Reg.", ptr->mdpa_stat);
465 	printf(fmt1, "MDPA_SYN Reg.", ptr->mdpa_syn);
466 	printf(fmt1, "MDPB_STAT Reg.", ptr->mdpb_stat);
467 	printf(fmt1, "MDPB_SYN Reg.", ptr->mdpb_syn);
468 
469 	/*
470 	 * Clear error by rewriting register.
471 	 */
472 	alpha_pal_wrmces(mces);
473 }
474 
475 /*
476  * KN300 specific machine check handler
477  */
478 
479 static void
480 kn300_mcheck(unsigned long mces, unsigned long type, unsigned long logout, struct trapframe *framep)
481 {
482 	struct mchkinfo *mcp;
483 	static const char *fmt1 = "        %-25s = 0x%l016x\n";
484 	int i;
485 	mc_hdr_ev5 *hdr;
486 	mc_uc_ev5 *ptr;
487 	struct mcpcia_iodsnap *iodsnp;
488 
489 	/*
490 	 * If we expected a machine check, just go handle it in common code.
491 	 */
492 	mcp = &curcpu()->ci_mcinfo;
493 	if (mcp->mc_expected) {
494 		machine_check(mces, framep, type, logout);
495 		return;
496 	}
497 
498 	hdr = (mc_hdr_ev5 *) logout;
499 	ptr = (mc_uc_ev5 *) (logout + sizeof (*hdr));
500 	ev5_logout_print(hdr, ptr);
501 
502 	iodsnp = (struct mcpcia_iodsnap *) ((unsigned long) hdr +
503 	    (unsigned long) hdr->la_system_offset);
504 	for (i = 0; i < MCPCIA_PER_MCBUS; i++, iodsnp++) {
505 		if (!IS_MCPCIA_MAGIC(iodsnp->pci_rev)) {
506 			continue;
507 		}
508 		printf("        IOD %d register dump:\n", i);
509 		printf(fmt1, "Base Addr of PCI bridge", iodsnp->base_addr);
510 		printf(fmt1, "Whami Reg.", iodsnp->whami);
511 		printf(fmt1, "Sys. Env. Reg.", iodsnp->sys_env);
512 		printf(fmt1, "PCI Rev. Reg.", iodsnp->pci_rev);
513 		printf(fmt1, "CAP_CTL Reg.", iodsnp->cap_ctrl);
514 		printf(fmt1, "HAE_MEM Reg.", iodsnp->hae_mem);
515 		printf(fmt1, "HAE_IO Reg.", iodsnp->hae_io);
516 		printf(fmt1, "INT_CTL Reg.", iodsnp->int_ctl);
517 		printf(fmt1, "INT_REG Reg.", iodsnp->int_reg);
518 		printf(fmt1, "INT_MASK0 Reg.", iodsnp->int_mask0);
519 		printf(fmt1, "INT_MASK1 Reg.", iodsnp->int_mask1);
520 		printf(fmt1, "MC_ERR0 Reg.", iodsnp->mc_err0);
521 		printf(fmt1, "MC_ERR1 Reg.", iodsnp->mc_err1);
522 		printf(fmt1, "CAP_ERR Reg.", iodsnp->cap_err);
523 		printf(fmt1, "PCI_ERR1 Reg.", iodsnp->pci_err1);
524 		printf(fmt1, "MDPA_STAT Reg.", iodsnp->mdpa_stat);
525 		printf(fmt1, "MDPA_SYN Reg.", iodsnp->mdpa_syn);
526 		printf(fmt1, "MDPB_STAT Reg.", iodsnp->mdpb_stat);
527 		printf(fmt1, "MDPB_SYN Reg.", iodsnp->mdpb_syn);
528 
529 	}
530 	/*
531 	 * Now that we've printed all sorts of useful information
532 	 * and have decided that we really can't do any more to
533 	 * respond to the error, go on to the common code for
534 	 * final disposition. Usually this means that we die.
535 	 */
536 	/*
537 	 * XXX: HANDLE PCI ERRORS HERE?
538 	 */
539 	machine_check(mces, framep, type, logout);
540 }
541 
542 static void
543 dec_kn300_mcheck_handler(unsigned long mces, struct trapframe *framep, unsigned long vector, unsigned long param)
544 {
545 	switch (vector) {
546 	case ALPHA_SYS_ERROR:
547 	case ALPHA_PROC_ERROR:
548 		kn300_softerr(mces, vector, param, framep);
549 		break;
550 
551 	case ALPHA_SYS_MCHECK:
552 	case ALPHA_PROC_MCHECK:
553 		kn300_mcheck(mces, vector, param, framep);
554 		break;
555 	default:
556 		printf("KN300_MCHECK: unknown check vector 0x%lx\n", vector);
557 		machine_check(mces, framep, vector, param);
558 		break;
559 	}
560 }
561