aboutsummaryrefslogtreecommitdiffstats
path: root/target/linux/adm5120-2.6/files/arch/mips/pci/fixup-adm5120.c
blob: e67064d645f5562c68278f52a10d7680540a3909 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
/*
 *  $Id$
 *
 *  ADM5120 specific PCI fixups
 *
 *  Copyright (C) ADMtek Incorporated.
 *  Copyright (C) 2005 Jeroen Vreeken (pe1rxq@amsat.org)
 *  Copyright (C) 2007 Gabor Juhos <juhosg@freemail.hu>
 *  Copyright (C) 2007 OpenWrt.org
 *
 *  This program is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU General Public License
 *  as published by the Free Software Foundation; either version 2
 *  of the License, or (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the
 *  Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 *  Boston, MA  02110-1301, USA.
 *
 */

#include <linux/autoconf.h>
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/pci.h>
#include <linux/pci_ids.h>
#include <linux/pci_regs.h>

#include <asm/delay.h>
#include <asm/bootinfo.h>

#include <asm/mach-adm5120/adm5120_info.h>
#include <asm/mach-adm5120/adm5120_defs.h>
#include <asm/mach-adm5120/adm5120_irq.h>

struct adm5120_pci_irq {
	u8	slot;
	u8	func;
	u8	pin;
	unsigned irq;
};

#define PCIIRQ(s,f,p,i) { 	\
	.slot = (s),		\
	.func = (f),		\
	.pin  = (p),		\
	.irq  = (i)		\
	}

static struct adm5120_pci_irq default_pci_irqs[] __initdata = {
	PCIIRQ(2, 0, 1, ADM5120_IRQ_PCI0),
};

static struct adm5120_pci_irq rb1xx_pci_irqs[] __initdata = {
	PCIIRQ(1, 0, 1, ADM5120_IRQ_PCI0),
	PCIIRQ(2, 0, 1, ADM5120_IRQ_PCI1),
	PCIIRQ(3, 0, 1, ADM5120_IRQ_PCI2)
};

static struct adm5120_pci_irq cas771_pci_irqs[] __initdata = {
	PCIIRQ(2, 0, 1, ADM5120_IRQ_PCI0),
	PCIIRQ(3, 0, 1, ADM5120_IRQ_PCI1),
	PCIIRQ(3, 2, 3, ADM5120_IRQ_PCI2)
};

static struct adm5120_pci_irq np28g_pci_irqs[] __initdata = {
	PCIIRQ(2, 0, 1, ADM5120_IRQ_PCI0),
	PCIIRQ(3, 0, 1, ADM5120_IRQ_PCI0),
	PCIIRQ(3, 1, 2, ADM5120_IRQ_PCI1),
	PCIIRQ(3, 2, 3, ADM5120_IRQ_PCI2)
};

#define GETMAP(n) do { 				\
		nr_irqs = ARRAY_SIZE(n ## _pci_irqs); 	\
		p = n ## _pci_irqs;			\
	} while (0)

int __init pcibios_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
{
	struct adm5120_pci_irq	*p;
	int nr_irqs;
	int i;
	int irq;

	irq = -1;
	if (slot < 1 || slot > 3) {
		printk(KERN_ALERT "PCI: slot number %u is not supported\n",
			slot);
		goto out;
	}

	GETMAP(default);

	switch (mips_machtype) {
	case MACH_ADM5120_RB_111:
	case MACH_ADM5120_RB_112:
	case MACH_ADM5120_RB_133:
	case MACH_ADM5120_RB_133C:
	case MACH_ADM5120_RB_153:
		GETMAP(rb1xx);
		break;
	case MACH_ADM5120_NP28G:
		GETMAP(np28g);
		break;
	case MACH_ADM5120_P335:
	case MACH_ADM5120_P334WT:
		/* using default mapping */
		break;
	case MACH_ADM5120_CAS771:
		GETMAP(cas771);
		break;

	case MACH_ADM5120_NP27G:
	case MACH_ADM5120_NP28GHS:
	case MACH_ADM5120_WP54AG:
	case MACH_ADM5120_WP54G:
	case MACH_ADM5120_WP54G_WRT:
	case MACH_ADM5120_WPP54AG:
	case MACH_ADM5120_WPP54G:
	default:
		printk(KERN_ALERT "PCI: irq map is unknown for %s, using "
			"defaults.\n",	adm5120_board_name());
		break;
	}

	for (i=0; i<nr_irqs; i++, p++) {
		if ((p->slot == slot) && (PCI_FUNC(dev->devfn) == p->func) &&
		    (p->pin == pin)) {
			irq = p->irq;
			break;
		}
	}

	if (irq < 0) {
		printk(KERN_ALERT "PCI: no irq found for %s pin:%u\n",
			pci_name(dev), pin);
	} else {
		printk(KERN_INFO "PCI: mapping irq for %s pin:%u, irq:%d\n",
			pci_name(dev), pin, irq);
	}

out:
	return irq;
}

static void adm5120_pci_fixup(struct pci_dev *dev)
{
	if (dev->devfn != 0)
		return;

	/* setup COMMAND register */
	pci_write_config_word(dev, PCI_COMMAND,
		(PCI_COMMAND_IO | PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER));

	/* setup CACHE_LINE_SIZE register */
	pci_write_config_byte(dev, PCI_CACHE_LINE_SIZE, 4);

	/* setting up BARS */
	pci_write_config_dword(dev, PCI_BASE_ADDRESS_0, 0);
	pci_write_config_dword(dev, PCI_BASE_ADDRESS_1, 0);
}

DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ADMTEK, PCI_DEVICE_ID_ADMTEK_ADM5120,
	adm5120_pci_fixup);

int pcibios_plat_dev_init(struct pci_dev *dev)
{
	return 0;
}