1 /*
2 * FILE NAME
3 * arch/mips/vr41xx/nec-eagle/pci_fixup.c
4 *
5 * BRIEF MODULE DESCRIPTION
6 * The NEC Eagle/Hawk Board specific PCI fixups.
7 *
8 * Author: Yoichi Yuasa
9 * yyuasa@mvista.com or source@mvista.com
10 *
11 * Copyright 2001,2002 MontaVista Software Inc.
12 *
13 * This program is free software; you can redistribute it and/or modify it
14 * under the terms of the GNU General Public License as published by the
15 * Free Software Foundation; either version 2 of the License, or (at your
16 * option) any later version.
17 *
18 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
19 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
20 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
23 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
24 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
25 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
26 * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
27 * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 *
29 * You should have received a copy of the GNU General Public License along
30 * with this program; if not, write to the Free Software Foundation, Inc.,
31 * 675 Mass Ave, Cambridge, MA 02139, USA.
32 */
33 /*
34 * Changes:
35 * MontaVista Software Inc. <yyuasa@mvista.com> or <source@mvista.com>
36 * - Moved mips_pci_channels[] to arch/mips/vr41xx/vr4122/eagle/setup.c.
37 * - Added support for NEC Hawk.
38 *
39 * Paul Mundt <lethal@chaoticdreams.org>
40 * - Fix empty break statements, remove useless CONFIG_PCI.
41 *
42 * MontaVista Software Inc. <yyuasa@mvista.com> or <source@mvista.com>
43 * - New creation, NEC Eagle is supported.
44 */
45 #include <linux/config.h>
46 #include <linux/init.h>
47 #include <linux/pci.h>
48
49 #include <asm/vr41xx/eagle.h>
50 #include <asm/vr41xx/vrc4173.h>
51
pcibios_fixup_resources(struct pci_dev * dev)52 void __init pcibios_fixup_resources(struct pci_dev *dev)
53 {
54 }
55
pcibios_fixup(void)56 void __init pcibios_fixup(void)
57 {
58 }
59
pcibios_fixup_irqs(void)60 void __init pcibios_fixup_irqs(void)
61 {
62 struct pci_dev *dev;
63 u8 slot, func, pin;
64
65 pci_for_each_dev(dev) {
66 slot = PCI_SLOT(dev->devfn);
67 func = PCI_FUNC(dev->devfn);
68 pci_read_config_byte(dev, PCI_INTERRUPT_PIN, &pin);
69 dev->irq = 0;
70
71 switch (slot) {
72 case 8:
73 switch (pin) {
74 case 1:
75 dev->irq = CP_INTA_IRQ;
76 break;
77 case 2:
78 dev->irq = CP_INTB_IRQ;
79 break;
80 case 3:
81 dev->irq = CP_INTC_IRQ;
82 break;
83 case 4:
84 dev->irq = CP_INTD_IRQ;
85 break;
86 }
87 break;
88 case 9:
89 switch (pin) {
90 case 1:
91 dev->irq = CP_INTD_IRQ;
92 break;
93 case 2:
94 dev->irq = CP_INTA_IRQ;
95 break;
96 case 3:
97 dev->irq = CP_INTB_IRQ;
98 break;
99 case 4:
100 dev->irq = CP_INTC_IRQ;
101 break;
102 }
103 break;
104 case 10:
105 switch (pin) {
106 case 1:
107 dev->irq = CP_INTC_IRQ;
108 break;
109 case 2:
110 dev->irq = CP_INTD_IRQ;
111 break;
112 case 3:
113 dev->irq = CP_INTA_IRQ;
114 break;
115 case 4:
116 dev->irq = CP_INTB_IRQ;
117 break;
118 }
119 break;
120 case 12:
121 dev->irq = VRC4173_PCMCIA1_IRQ;
122 break;
123 case 13:
124 dev->irq = VRC4173_PCMCIA2_IRQ;
125 break;
126 case 28:
127 dev->irq = LANINTA_IRQ;
128 break;
129 case 29:
130 switch (pin) {
131 case 1:
132 dev->irq = PCISLOT_IRQ;
133 break;
134 case 2:
135 dev->irq = CP_INTB_IRQ;
136 break;
137 case 3:
138 dev->irq = CP_INTC_IRQ;
139 break;
140 case 4:
141 dev->irq = CP_INTD_IRQ;
142 break;
143 }
144 break;
145 case 30:
146 switch (func) {
147 case 0:
148 dev->irq = VRC4173_CASCADE_IRQ;
149 break;
150 case 1:
151 dev->irq = VRC4173_AC97_IRQ;
152 break;
153 case 2:
154 dev->irq = VRC4173_USB_IRQ;
155 break;
156 }
157 break;
158 }
159
160 pci_write_config_byte(dev, PCI_INTERRUPT_LINE, dev->irq);
161 }
162 }
163
pcibios_assign_all_busses(void)164 unsigned int pcibios_assign_all_busses(void)
165 {
166 return 0;
167 }
168