dbau1500.c revision 1.8 
1/* $NetBSD: dbau1500.c,v 1.8 2015/06/09 22:49:55 matt Exp $ */
2
3/*-
4 * Copyright (c) 2006 Itronix Inc.
5 * All rights reserved.
6 *
7 * Written by Garrett D'Amore for Itronix Inc.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 *    notice, 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 Itronix Inc. may not be used to endorse
18 *    or promote products derived from this software without specific
19 *    prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY ITRONIX INC. ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
23 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
24 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL ITRONIX INC. BE LIABLE FOR ANY
25 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
26 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
27 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
28 * ON ANY THEORY OF LIABILITY, WHETHER IN
29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
31 * POSSIBILITY OF SUCH DAMAGE.
32 */
33
34#include <sys/cdefs.h>
35__KERNEL_RCSID(0, "$NetBSD: dbau1500.c,v 1.8 2015/06/09 22:49:55 matt Exp $");
36
37#include <sys/param.h>
38#include <sys/bus.h>
39#include <sys/cpu.h>
40
41#include <mips/locore.h>
42
43#include <evbmips/alchemy/obiovar.h>
44#include <evbmips/alchemy/board.h>
45#include <evbmips/alchemy/dbau1500reg.h>
46
47#define	GET16(x)	\
48	(*((volatile uint16_t *)MIPS_PHYS_TO_KSEG1(x)))
49#define	PUT16(x, v)	\
50	(*((volatile uint16_t *)MIPS_PHYS_TO_KSEG1(x)) = (v))
51
52static void dbau1500_init(void);
53static int dbau1500_pci_intr_map(const struct pci_attach_args *,
54				 pci_intr_handle_t *);
55static void dbau1500_reboot(void);
56
57static const struct obiodev dbau1500_devices[] = {
58#if 0
59	{ "aupcmcia", -1, -1 },
60	{ "auaudio", -1, -1 },
61#endif
62	{ NULL },
63};
64
65static struct alchemy_board dbau1500_info = {
66	"AMD Alchemy DBAu1500",
67	dbau1500_devices,
68	dbau1500_init,
69	dbau1500_pci_intr_map,
70	dbau1500_reboot,
71	NULL,	/* poweroff */
72};
73
74const struct alchemy_board *
75board_info(void)
76{
77
78	return &dbau1500_info;
79}
80
81void
82dbau1500_init(void)
83{
84	uint32_t	whoami;
85
86	if (MIPS_PRID_COPTS(mips_options.mips_cpu_id) != MIPS_AU1500)
87		panic("dbau1500: CPU not an AU1500!");
88
89	/* check the whoami register for a match */
90	whoami = *((volatile uint32_t *)MIPS_PHYS_TO_KSEG1(DBAU1500_WHOAMI));
91
92	if (DBAU1500_WHOAMI_BOARD(whoami) != DBAU1500_WHOAMI_DBAU1500)
93		panic("dbau1500: WHOAMI (%x) not DBAu1500!", whoami);
94
95	printf("DBAu1500 (zinfandel), CPLDv%d, ",
96	    DBAU1500_WHOAMI_CPLD(whoami));
97
98	if (DBAU1500_WHOAMI_DAUGHTER(whoami) != 0xf)
99		printf("daughtercard 0x%x\n",
100		    DBAU1500_WHOAMI_DAUGHTER(whoami));
101	else
102		printf("no daughtercard\n");
103
104	/* leave console and clocks alone -- YAMON should have got it right! */
105}
106
107int
108dbau1500_pci_intr_map(const struct pci_attach_args *pa, pci_intr_handle_t *ihp)
109{
110	/*
111	 * This platform has PCI slot and IDE interrupts mapped
112	 * identically.  So we just need to look at which of the four
113	 * PCI interrupts it is.
114	 */
115
116	switch (pa->pa_intrpin) {
117	case 0:
118		/* not used */
119		return 1;
120	case 1:
121		*ihp = 1;
122		break;
123	case 2:
124		*ihp = 2;
125		break;
126	case 3:
127		*ihp = 4;
128		break;
129	case 4:
130		*ihp = 5;
131		break;
132	default:
133		printf("pci: bad interrupt pin %d\n", pa->pa_intrpin);
134		return 1;
135	}
136	return 0;
137}
138
139void
140dbau1500_reboot(void)
141{
142	PUT16(DBAU1500_SOFTWARE_RESET, 0);
143	delay(100000);	/* 100 msec */
144}
145