[adm5120]: from now on, the kernel parses parameters passed by our lzma-loader
[openwrt/svn-archive/archive.git] / target / linux / adm5120-2.6 / files / arch / mips / pci / fixup-adm5120.c
1 /*
2 * $Id$
3 *
4 * ADM5120 specific PCI fixups
5 *
6 * Copyright (C) ADMtek Incorporated.
7 * Copyright (C) 2005 Jeroen Vreeken (pe1rxq@amsat.org)
8 * Copyright (C) 2007 Gabor Juhos <juhosg@freemail.hu>
9 * Copyright (C) 2007 OpenWrt.org
10 *
11 * This program is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU General Public License
13 * as published by the Free Software Foundation; either version 2
14 * of the License, or (at your option) any later version.
15 *
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
20 *
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the
23 * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
24 * Boston, MA 02110-1301, USA.
25 *
26 */
27
28 #include <linux/autoconf.h>
29 #include <linux/types.h>
30 #include <linux/kernel.h>
31 #include <linux/init.h>
32 #include <linux/pci.h>
33 #include <linux/pci_ids.h>
34 #include <linux/pci_regs.h>
35
36 #include <asm/delay.h>
37 #include <asm/bootinfo.h>
38
39 #include <asm/mach-adm5120/adm5120_info.h>
40 #include <asm/mach-adm5120/adm5120_defs.h>
41 #include <asm/mach-adm5120/adm5120_irq.h>
42
43 struct adm5120_pci_irq {
44 u8 slot;
45 u8 func;
46 u8 pin;
47 unsigned irq;
48 };
49
50 #define PCIIRQ(s,f,p,i) { \
51 .slot = (s), \
52 .func = (f), \
53 .pin = (p), \
54 .irq = (i) \
55 }
56
57 static struct adm5120_pci_irq default_pci_irqs[] __initdata = {
58 PCIIRQ(2, 0, 1, ADM5120_IRQ_PCI0),
59 };
60
61 static struct adm5120_pci_irq rb1xx_pci_irqs[] __initdata = {
62 PCIIRQ(1, 0, 1, ADM5120_IRQ_PCI0),
63 PCIIRQ(2, 0, 1, ADM5120_IRQ_PCI1),
64 PCIIRQ(3, 0, 1, ADM5120_IRQ_PCI2)
65 };
66
67 static struct adm5120_pci_irq cas771_pci_irqs[] __initdata = {
68 PCIIRQ(2, 0, 1, ADM5120_IRQ_PCI0),
69 PCIIRQ(3, 0, 1, ADM5120_IRQ_PCI1),
70 PCIIRQ(3, 2, 3, ADM5120_IRQ_PCI2)
71 };
72
73 static struct adm5120_pci_irq np28g_pci_irqs[] __initdata = {
74 PCIIRQ(2, 0, 1, ADM5120_IRQ_PCI0),
75 PCIIRQ(3, 0, 1, ADM5120_IRQ_PCI0),
76 PCIIRQ(3, 1, 2, ADM5120_IRQ_PCI1),
77 PCIIRQ(3, 2, 3, ADM5120_IRQ_PCI2)
78 };
79
80 #define GETMAP(n) do { \
81 nr_irqs = ARRAY_SIZE(n ## _pci_irqs); \
82 p = n ## _pci_irqs; \
83 } while (0)
84
85 int __init pcibios_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
86 {
87 struct adm5120_pci_irq *p;
88 int nr_irqs;
89 int i;
90 int irq;
91
92 irq = -1;
93 if (slot < 1 || slot > 3) {
94 printk("PCI: slot number %u is not supported\n", slot);
95 goto out;
96 }
97
98 GETMAP(default);
99
100 switch (mips_machtype) {
101 case MACH_ADM5120_RB_111:
102 case MACH_ADM5120_RB_112:
103 case MACH_ADM5120_RB_133:
104 case MACH_ADM5120_RB_133C:
105 case MACH_ADM5120_RB_153:
106 GETMAP(rb1xx);
107 break;
108 case MACH_ADM5120_NP28G:
109 GETMAP(np28g);
110 break;
111 case MACH_ADM5120_P335:
112 case MACH_ADM5120_P334WT:
113 /* using default mapping */
114 break;
115 case MACH_ADM5120_CAS771:
116 GETMAP(cas771);
117 break;
118
119 case MACH_ADM5120_NP27G:
120 case MACH_ADM5120_NP28GHS:
121 case MACH_ADM5120_WP54AG:
122 case MACH_ADM5120_WP54G:
123 case MACH_ADM5120_WP54G_WRT:
124 case MACH_ADM5120_WPP54AG:
125 case MACH_ADM5120_WPP54G:
126 default:
127 printk("PCI: irq map is unknown for %s, using defaults.\n",
128 adm5120_board_name());
129 break;
130 }
131
132 for (i=0; i<nr_irqs; i++, p++) {
133 if ((p->slot == slot) && (PCI_FUNC(dev->devfn) == p->func) &&
134 (p->pin == pin)) {
135 irq = p->irq;
136 break;
137 }
138 }
139
140 if (irq < 0) {
141 printk(KERN_INFO "PCI: no irq found for %s pin:%u\n",
142 pci_name(dev), pin);
143 } else {
144 printk(KERN_INFO "PCI: mapping irq for %s pin:%u, irq:%d\n",
145 pci_name(dev), pin, irq);
146 }
147
148 out:
149 return irq;
150 }
151
152 static void adm5120_pci_fixup(struct pci_dev *dev)
153 {
154 if (dev->devfn != 0)
155 return;
156
157 /* setup COMMAND register */
158 pci_write_config_word(dev, PCI_COMMAND,
159 (PCI_COMMAND_IO | PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER));
160
161 /* setup CACHE_LINE_SIZE register */
162 pci_write_config_byte(dev, PCI_CACHE_LINE_SIZE, 4);
163
164 /* setting up BARS */
165 pci_write_config_dword(dev, PCI_BASE_ADDRESS_0, 0);
166 pci_write_config_dword(dev, PCI_BASE_ADDRESS_1, 0);
167 }
168
169 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ADMTEK, PCI_DEVICE_ID_ADMTEK_ADM5120,
170 adm5120_pci_fixup);
171
172 int pcibios_plat_dev_init(struct pci_dev *dev)
173 {
174 return 0;
175 }
176