1/* $NetBSD: dec_6600.c,v 1.32 2011/07/01 19:22:35 dyoung Exp $ */
2
3/*
4 * Copyright (c) 1995, 1996, 1997 Carnegie-Mellon University.
5 * All rights reserved.
6 *
7 * Author: Chris G. Demetriou
8 *
9 * Permission to use, copy, modify and distribute this software and
10 * its documentation is hereby granted, provided that both the copyright
11 * notice and this permission notice appear in all copies of the
12 * software, derivative works or modified versions, and any portions
13 * thereof, and that both notices appear in supporting documentation.
14 *
15 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
16 * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
17 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
18 *
19 * Carnegie Mellon requests users of this software to return to
20 *
21 *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
22 *  School of Computer Science
23 *  Carnegie Mellon University
24 *  Pittsburgh PA 15213-3890
25 *
26 * any improvements or extensions that they make and grant Carnegie the
27 * rights to redistribute these changes.
28 */
29
30#include "opt_kgdb.h"
31
32#include <sys/cdefs.h>			/* RCS ID & Copyright macro defns */
33
34__KERNEL_RCSID(0, "$NetBSD: dec_6600.c,v 1.32 2011/07/01 19:22:35 dyoung Exp $");
35
36#include <sys/param.h>
37#include <sys/systm.h>
38#include <sys/device.h>
39#include <sys/termios.h>
40#include <sys/conf.h>
41#include <dev/cons.h>
42
43#include <machine/rpb.h>
44#include <machine/autoconf.h>
45#include <machine/cpuconf.h>
46#include <sys/bus.h>
47#include <machine/alpha.h>
48#include <machine/logout.h>
49
50#include <dev/ic/comreg.h>
51#include <dev/ic/comvar.h>
52
53#include <dev/isa/isareg.h>
54#include <dev/isa/isavar.h>
55#include <dev/ic/i8042reg.h>
56#include <dev/ic/pckbcvar.h>
57#include <dev/pci/pcireg.h>
58#include <dev/pci/pcivar.h>
59
60#include <alpha/pci/tsreg.h>
61#include <alpha/pci/tsvar.h>
62
63#include <dev/scsipi/scsi_all.h>
64#include <dev/scsipi/scsipi_all.h>
65#include <dev/scsipi/scsiconf.h>
66#include <dev/ata/atavar.h>
67
68#include <dev/ic/mlxio.h>
69#include <dev/ic/mlxvar.h>
70
71#include <dev/i2o/i2o.h>
72#include <dev/i2o/iopio.h>
73#include <dev/i2o/iopvar.h>
74
75#include "pckbd.h"
76
77#ifndef CONSPEED
78#define CONSPEED TTYDEF_SPEED
79#endif
80
81#define	DR_VERBOSE(f) while (0)
82
83static int comcnrate __attribute__((unused)) = CONSPEED;
84
85void dec_6600_init(void);
86static void dec_6600_cons_init(void);
87static void dec_6600_device_register(device_t, void *);
88static void dec_6600_mcheck(unsigned long, struct ev6_logout_area *);
89static void dec_6600_mcheck_sys(unsigned int, struct ev6_logout_area *);
90static void dec_6600_mcheck_handler(unsigned long, struct trapframe *,
91				    unsigned long, unsigned long);
92
93#ifdef KGDB
94#include <machine/db_machdep.h>
95
96static const char *kgdb_devlist[] = {
97	"com",
98	NULL,
99};
100#endif /* KGDB */
101
102void
103dec_6600_init(void)
104{
105
106	platform.family = "6600";
107
108	if ((platform.model = alpha_dsr_sysname()) == NULL) {
109		/* XXX Don't know the system variations, yet. */
110		platform.model = alpha_unknown_sysname();
111	}
112
113	platform.iobus = "tsc";
114	platform.cons_init = dec_6600_cons_init;
115	platform.device_register = dec_6600_device_register;
116	platform.mcheck_handler = dec_6600_mcheck_handler;
117
118	/* enable Cchip and Pchip error interrupts */
119	STQP(TS_C_DIM0) = 0xe000000000000000;
120	STQP(TS_C_DIM1) = 0xe000000000000000;
121}
122
123static void
124dec_6600_cons_init(void)
125{
126	struct ctb *ctb;
127	uint64_t ctbslot;
128	struct tsp_config *tsp;
129
130	ctb = (struct ctb *)(((char *)hwrpb) + hwrpb->rpb_ctb_off);
131	ctbslot = ctb->ctb_turboslot;
132
133	/* Console hose defaults to hose 0. */
134	tsp_console_hose = 0;
135
136	tsp = tsp_init(0, tsp_console_hose);
137
138	switch (ctb->ctb_term_type) {
139	case CTB_PRINTERPORT:
140		/* serial console ... */
141		assert(CTB_TURBOSLOT_HOSE(ctbslot) == 0);
142		/* XXX */
143		{
144			/*
145			 * Delay to allow PROM putchars to complete.
146			 * FIFO depth * character time,
147			 * character time = (1000000 / (defaultrate / 10))
148			 */
149			DELAY(160000000 / comcnrate);
150
151			if(comcnattach(&tsp->pc_iot, 0x3f8, comcnrate,
152			    COM_FREQ, COM_TYPE_NORMAL,
153			    (TTYDEF_CFLAG & ~(CSIZE | PARENB)) | CS8))
154				panic("can't init serial console");
155
156			break;
157		}
158
159	case CTB_GRAPHICS:
160#if NPCKBD > 0
161		/* display console ... */
162		/* XXX */
163		(void) pckbc_cnattach(&tsp->pc_iot, IO_KBD, KBCMDP,
164		    PCKBC_KBD_SLOT);
165
166		if (CTB_TURBOSLOT_TYPE(ctbslot) ==
167		    CTB_TURBOSLOT_TYPE_ISA)
168			isa_display_console(&tsp->pc_iot, &tsp->pc_memt);
169		else {
170			/* The display PCI might be different */
171			tsp_console_hose = CTB_TURBOSLOT_HOSE(ctbslot);
172			tsp = tsp_init(0, tsp_console_hose);
173			pci_display_console(&tsp->pc_iot, &tsp->pc_memt,
174			    &tsp->pc_pc, CTB_TURBOSLOT_BUS(ctbslot),
175			    CTB_TURBOSLOT_SLOT(ctbslot), 0);
176		}
177#else
178		panic("not configured to use display && keyboard console");
179#endif
180		break;
181
182	default:
183		printf("ctb_term_type = 0x%lx ctb_turboslot = 0x%lx"
184		    " hose = %ld\n", ctb->ctb_term_type, ctbslot,
185		    CTB_TURBOSLOT_HOSE(ctbslot));
186
187		panic("consinit: unknown console type %ld",
188		    ctb->ctb_term_type);
189	}
190#ifdef KGDB
191	/* Attach the KGDB device. */
192	alpha_kgdb_init(kgdb_devlist, &tsp->pc_iot);
193#endif /* KGDB */
194}
195
196static void
197dec_6600_device_register(device_t dev, void *aux)
198{
199	static int found, initted, diskboot, netboot;
200	static device_t primarydev, pcidev, ctrlrdev;
201	struct bootdev_data *b = bootdev_data;
202	device_t parent = device_parent(dev);
203
204	if (found)
205		return;
206
207	if (!initted) {
208		diskboot = (strcasecmp(b->protocol, "SCSI") == 0) ||
209		    (strcasecmp(b->protocol, "RAID") == 0) ||
210		    (strcasecmp(b->protocol, "I2O") == 0) ||
211		    (strcasecmp(b->protocol, "IDE") == 0);
212		netboot = (strcasecmp(b->protocol, "BOOTP") == 0) ||
213		    (strcasecmp(b->protocol, "MOP") == 0);
214		DR_VERBOSE(printf("diskboot = %d, netboot = %d\n", diskboot,
215		    netboot));
216		initted = 1;
217	}
218
219	if (primarydev == NULL) {
220		if (!device_is_a(dev, "tsp"))
221			return;
222		else {
223			struct tsp_attach_args *tsp = aux;
224
225			if (b->bus != tsp->tsp_slot)
226				return;
227			primarydev = dev;
228			DR_VERBOSE(printf("\nprimarydev = %s\n",
229			    device_xname(dev)));
230			return;
231		}
232	}
233
234	if (pcidev == NULL) {
235		if (!device_is_a(dev, "pci"))
236			return;
237		/*
238		 * Try to find primarydev anywhere in the ancestry.  This is
239		 * necessary if the PCI bus is hidden behind a bridge.
240		 */
241		while (parent) {
242			if (parent == primarydev)
243				break;
244			parent = device_parent(parent);
245		}
246		if (!parent)
247			return;
248		else {
249			struct pcibus_attach_args *pba = aux;
250
251			if ((b->slot / 1000) != pba->pba_bus)
252				return;
253
254			pcidev = dev;
255			DR_VERBOSE(printf("\npcidev = %s\n", device_xname(dev)));
256			return;
257		}
258	}
259
260	if (ctrlrdev == NULL) {
261		if (parent != pcidev)
262			return;
263		else {
264			struct pci_attach_args *pa = aux;
265			int slot;
266
267			slot = pa->pa_bus * 1000 + pa->pa_function * 100 +
268			    pa->pa_device;
269			if (b->slot != slot)
270				return;
271
272			if (netboot) {
273				booted_device = dev;
274				DR_VERBOSE(printf("\nbooted_device = %s\n",
275				    device_xname(dev)));
276				found = 1;
277			} else {
278				ctrlrdev = dev;
279				DR_VERBOSE(printf("\nctrlrdev = %s\n",
280				    device_xname(dev)));
281			}
282			return;
283		}
284	}
285
286	if (!diskboot)
287		return;
288
289	if (device_is_a(dev, "sd") ||
290	    device_is_a(dev, "st") ||
291	    device_is_a(dev, "cd")) {
292		struct scsipibus_attach_args *sa = aux;
293		struct scsipi_periph *periph = sa->sa_periph;
294		int unit;
295
296		if (device_parent(parent) != ctrlrdev)
297			return;
298
299		unit = periph->periph_target * 100 + periph->periph_lun;
300		if (b->unit != unit)
301			return;
302		if (b->channel != periph->periph_channel->chan_channel)
303			return;
304
305		/* we've found it! */
306		booted_device = dev;
307		DR_VERBOSE(printf("\nbooted_device = %s\n", device_xname(dev)));
308		found = 1;
309	}
310
311	if (device_is_a(dev, "ld") && device_is_a(parent, "iop")) {
312		/*
313		 * Argh!  The attach arguments for ld devices is not
314		 * consistent, so each supported raid controller requires
315		 * different checks.
316		 */
317		struct iop_attach_args *iopa = aux;
318
319		if (parent != ctrlrdev)
320			return;
321
322		if (b->unit != iopa->ia_tid)
323			return;
324		/* we've found it! */
325		booted_device = dev;
326		DR_VERBOSE(printf("\nbooted_device = %s\n", device_xname(dev)));
327		found = 1;
328	}
329
330	if (device_is_a(dev, "ld") && device_is_a(parent, "mlx")) {
331		/*
332		 * Argh!  The attach arguments for ld devices is not
333		 * consistent, so each supported raid controller requires
334		 * different checks.
335		 */
336		struct mlx_attach_args *mlxa = aux;
337
338		if (parent != ctrlrdev)
339			return;
340
341		if (b->unit != mlxa->mlxa_unit)
342			return;
343		/* we've found it! */
344		booted_device = dev;
345		DR_VERBOSE(printf("\nbooted_device = %s\n", device_xname(dev)));
346		found = 1;
347	}
348
349	/*
350	 * Support to boot from IDE drives.
351	 */
352	if (device_is_a(dev, "wd")) {
353		struct ata_device *adev = aux;
354
355		if (!device_is_a(parent, "atabus"))
356			return;
357		if (device_parent(parent) != ctrlrdev)
358			return;
359
360		DR_VERBOSE(printf("\nAtapi info: drive: %d, channel %d\n",
361		    adev->adev_drv_data->drive, adev->adev_channel));
362		DR_VERBOSE(printf("Bootdev info: unit: %d, channel: %d\n",
363		    b->unit, b->channel));
364		if (b->unit != adev->adev_drv_data->drive ||
365		    b->channel != adev->adev_channel)
366			return;
367
368		/* we've found it! */
369		booted_device = dev;
370		DR_VERBOSE(printf("booted_device = %s\n", device_xname(dev)));
371		found = 1;
372	}
373}
374
375
376static void
377dec_6600_mcheck(unsigned long vector, struct ev6_logout_area *la)
378{
379	const char *t = "Unknown", *c = "";
380
381	if (vector == ALPHA_SYS_ERROR || vector == ALPHA_PROC_ERROR)
382		c = " Correctable";
383
384	switch (vector) {
385	case ALPHA_SYS_ERROR:
386	case ALPHA_SYS_MCHECK:
387		t = "System";
388		break;
389
390	case ALPHA_PROC_ERROR:
391	case ALPHA_PROC_MCHECK:
392		t = "Processor";
393		break;
394
395	case ALPHA_ENV_MCHECK:
396		t = "Environmental";
397		break;
398	}
399
400	printf("\n%s%s Machine Check (%lx): "
401	       "Rev 0x%x, Code 0x%x, Flags 0x%x\n\n",
402	       t, c, vector, la->mchk_rev, la->mchk_code, la->la.la_flags);
403}
404
405static void
406dec_6600_mcheck_sys(unsigned int indent, struct ev6_logout_area *la)
407{
408	struct ev6_logout_sys *ls =
409		(struct ev6_logout_sys *)ALPHA_LOGOUT_SYSTEM_AREA(&la->la);
410
411#define FMT	"%-30s = 0x%016lx\n"
412
413	IPRINTF(indent, FMT, "Software Error Summary Flags", ls->flags);
414
415	IPRINTF(indent, FMT, "CPU Device Interrupt Requests", ls->dir);
416	tsc_print_dir(indent + 1, ls->dir);
417
418	IPRINTF(indent, FMT, "Cchip Miscellaneous Register", ls->misc);
419	tsc_print_misc(indent + 1, ls->misc);
420
421	IPRINTF(indent, FMT, "Pchip 0 Error Register", ls->p0_error);
422	if (ls->flags & 0x5)
423		tsp_print_error(indent + 1, ls->p0_error);
424
425	IPRINTF(indent, FMT, "Pchip 1 Error Register", ls->p1_error);
426	if (ls->flags & 0x6)
427		tsp_print_error(indent + 1, ls->p1_error);
428}
429
430static void
431dec_6600_mcheck_handler(unsigned long mces, struct trapframe *framep,
432			unsigned long vector, unsigned long param)
433{
434	struct mchkinfo *mcp;
435	struct ev6_logout_area *la = (struct ev6_logout_area *)param;
436
437	/*
438	 * If we expected a machine check, just go handle it in common code.
439	 */
440	mcp = &curcpu()->ci_mcinfo;
441	if (mcp->mc_expected)
442		machine_check(mces, framep, vector, param);
443
444	dec_6600_mcheck(vector, la);
445
446	switch (vector) {
447	case ALPHA_SYS_ERROR:
448	case ALPHA_SYS_MCHECK:
449		dec_6600_mcheck_sys(1, la);
450		break;
451
452	}
453
454	machine_check(mces, framep, vector, param);
455}
456