1/* $NetBSD: dec_550.c,v 1.34 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 * Additional Copyright (c) 1997 by Matthew Jacob for NASA/Ames Research Center
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_550.c,v 1.34 2011/07/01 19:22:35 dyoung 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 <uvm/uvm_extern.h>
47
48#include <machine/rpb.h>
49#include <machine/autoconf.h>
50#include <machine/cpuconf.h>
51#include <sys/bus.h>
52
53#include <dev/ic/comreg.h>
54#include <dev/ic/comvar.h>
55
56#include <dev/isa/isareg.h>
57#include <dev/isa/isavar.h>
58#include <dev/ic/i8042reg.h>
59#include <dev/ic/pckbcvar.h>
60#include <dev/pci/pcireg.h>
61#include <dev/pci/pcivar.h>
62
63#include <alpha/pci/ciareg.h>
64#include <alpha/pci/ciavar.h>
65
66#include <dev/scsipi/scsi_all.h>
67#include <dev/scsipi/scsipi_all.h>
68#include <dev/scsipi/scsiconf.h>
69#include <dev/ata/atavar.h>
70
71/* Write this to Pyxis General Purpose Output to turn off the power. */
72#define	DEC_550_PYXIS_GPO_POWERDOWN	0x00000400
73
74#include "pckbd.h"
75
76#ifndef CONSPEED
77#define CONSPEED TTYDEF_SPEED
78#endif
79static int comcnrate = CONSPEED;
80
81#define	DR_VERBOSE(f) while (0)
82
83void dec_550_init(void);
84static void dec_550_cons_init(void);
85static void dec_550_device_register(device_t, void *);
86static void dec_550_powerdown(void);
87
88#ifdef KGDB
89#include <machine/db_machdep.h>
90
91static const char *kgdb_devlist[] = {
92	"com",
93	NULL,
94};
95#endif /* KGDB */
96
97void
98dec_550_init(void)
99{
100
101	platform.family = "Digital Personal Workstation";
102
103	if ((platform.model = alpha_dsr_sysname()) == NULL) {
104		/* XXX Don't know the system variations, yet. */
105		platform.model = alpha_unknown_sysname();
106	}
107
108	platform.iobus = "cia";
109	platform.cons_init = dec_550_cons_init;
110	platform.device_register = dec_550_device_register;
111	platform.powerdown = dec_550_powerdown;
112
113	/*
114	 * If Miata systems have a secondary cache, it's 2MB.
115	 */
116	uvmexp.ncolors = atop(2 * 1024 * 1024);
117}
118
119static void
120dec_550_cons_init(void)
121{
122	struct ctb *ctb;
123	struct cia_config *ccp;
124	extern struct cia_config cia_configuration;
125
126	ccp = &cia_configuration;
127	cia_init(ccp, 0);
128
129	ctb = (struct ctb *)(((char *)hwrpb) + hwrpb->rpb_ctb_off);
130
131	switch (ctb->ctb_term_type) {
132	case CTB_PRINTERPORT:
133		/* serial console ... */
134		/* XXX */
135		{
136			/*
137			 * Delay to allow PROM putchars to complete.
138			 * FIFO depth * character time,
139			 * character time = (1000000 / (defaultrate / 10))
140			 */
141			DELAY(160000000 / comcnrate);
142
143			if(comcnattach(&ccp->cc_iot, 0x3f8, comcnrate,
144			    COM_FREQ, COM_TYPE_NORMAL,
145			    (TTYDEF_CFLAG & ~(CSIZE | PARENB)) | CS8))
146				panic("can't init serial console");
147
148			break;
149		}
150
151	case CTB_GRAPHICS:
152#if NPCKBD > 0
153		/* display console ... */
154		/* XXX */
155		(void) pckbc_cnattach(&ccp->cc_iot, IO_KBD, KBCMDP,
156		    PCKBC_KBD_SLOT);
157
158		if (CTB_TURBOSLOT_TYPE(ctb->ctb_turboslot) ==
159		    CTB_TURBOSLOT_TYPE_ISA)
160			isa_display_console(&ccp->cc_iot, &ccp->cc_memt);
161		else
162			pci_display_console(&ccp->cc_iot, &ccp->cc_memt,
163			    &ccp->cc_pc, CTB_TURBOSLOT_BUS(ctb->ctb_turboslot),
164			    CTB_TURBOSLOT_SLOT(ctb->ctb_turboslot), 0);
165#else
166		panic("not configured to use display && keyboard console");
167#endif
168		break;
169
170	default:
171		printf("ctb->ctb_term_type = 0x%lx\n", ctb->ctb_term_type);
172		printf("ctb->ctb_turboslot = 0x%lx\n", ctb->ctb_turboslot);
173
174		panic("consinit: unknown console type %ld",
175		    ctb->ctb_term_type);
176	}
177#ifdef KGDB
178	/* Attach the KGDB device. */
179	alpha_kgdb_init(kgdb_devlist, &ccp->cc_iot);
180#endif /* KGDB */
181}
182
183static void
184dec_550_device_register(device_t dev, void *aux)
185{
186	static int found, initted, diskboot, netboot;
187	static device_t pcidev, ctrlrdev;
188	struct bootdev_data *b = bootdev_data;
189	device_t parent = device_parent(dev);
190
191	if (found)
192		return;
193
194	if (!initted) {
195		diskboot = (strcasecmp(b->protocol, "SCSI") == 0) ||
196		    (strcasecmp(b->protocol, "IDE") == 0);
197		netboot = (strcasecmp(b->protocol, "BOOTP") == 0) ||
198		    (strcasecmp(b->protocol, "MOP") == 0);
199		DR_VERBOSE(printf("diskboot = %d, netboot = %d\n", diskboot,
200		    netboot));
201		initted = 1;
202	}
203
204	if (pcidev == NULL) {
205		if (!device_is_a(dev, "pci"))
206			return;
207		else {
208			struct pcibus_attach_args *pba = aux;
209
210			if ((b->slot / 1000) != pba->pba_bus)
211				return;
212
213			pcidev = dev;
214			DR_VERBOSE(printf("\npcidev = %s\n", device_xname(dev)));
215			return;
216		}
217	}
218
219	if (ctrlrdev == NULL) {
220		if (parent != pcidev)
221			return;
222		else {
223			struct pci_attach_args *pa = aux;
224			int slot;
225
226			slot = pa->pa_bus * 1000 + pa->pa_function * 100 +
227			    pa->pa_device;
228			if (b->slot != slot)
229				return;
230
231			if (netboot) {
232				booted_device = dev;
233				DR_VERBOSE(printf("\nbooted_device = %s\n",
234				    device_xname(dev)));
235				found = 1;
236			} else {
237				ctrlrdev = dev;
238				DR_VERBOSE(printf("\nctrlrdev = %s\n",
239				    device_xname(dev)));
240			}
241			return;
242		}
243	}
244
245	if (!diskboot)
246		return;
247
248	if (device_is_a(dev, "sd") ||
249	    device_is_a(dev, "st") ||
250	    device_is_a(dev, "cd")) {
251		struct scsipibus_attach_args *sa = aux;
252		struct scsipi_periph *periph = sa->sa_periph;
253		int unit;
254
255		if (device_parent(parent) != ctrlrdev)
256			return;
257
258		unit = periph->periph_target * 100 + periph->periph_lun;
259		if (b->unit != unit)
260			return;
261		if (b->channel != periph->periph_channel->chan_channel)
262			return;
263
264		/* we've found it! */
265		booted_device = dev;
266		DR_VERBOSE(printf("\nbooted_device = %s\n", device_xname(dev)));
267		found = 1;
268	}
269
270	/*
271	 * Support to boot from IDE drives.
272	 */
273	if (device_is_a(dev, "wd")) {
274		struct ata_device *adev = aux;
275
276		if (!device_is_a(parent, "atabus"))
277			return;
278		if (device_parent(parent) != ctrlrdev)
279			return;
280
281		DR_VERBOSE(printf("\nAtapi info: drive: %d, channel %d\n",
282		    adev->adev_drv_data->drive, adev->adev_channel));
283		DR_VERBOSE(printf("Bootdev info: unit: %d, channel: %d\n",
284		    b->unit, b->channel));
285		if (b->unit != adev->adev_drv_data->drive ||
286		    b->channel != adev->adev_channel)
287			return;
288
289		/* we've found it! */
290		booted_device = dev;
291		DR_VERBOSE(printf("booted_device = %s\n", device_xname(dev)));
292		found = 1;
293	}
294}
295
296static void
297dec_550_powerdown(void)
298{
299
300	REGVAL(PYXIS_GPO) = DEC_550_PYXIS_GPO_POWERDOWN;
301	alpha_mb();
302}
303