2 * arch/mips/pci/fixup-vr4133.c
4 * The NEC CMB-VR4133 Board specific PCI fixups.
6 * Author: Yoichi Yuasa <yyuasa@mvista.com, or source@mvista.com> and
7 * Alex Sapkov <asapkov@ru.mvista.com>
9 * 2003-2004 (c) MontaVista, Software, Inc. This file is licensed under
10 * the terms of the GNU General Public License version 2. This program
11 * is licensed "as is" without any warranty of any kind, whether express
14 * Modified for support in 2.6
15 * Author: Manish Lachwani (mlachwani@mvista.com)
18 #include <linux/init.h>
19 #include <linux/pci.h>
20 #include <linux/kernel.h>
23 #include <asm/i8259.h>
24 #include <asm/vr41xx/cmbvr4133.h>
26 extern int vr4133_rockhopper;
27 extern void ali_m1535plus_init(struct pci_dev *dev);
28 extern void ali_m5229_init(struct pci_dev *dev);
30 /* Do platform specific device initialization at pci_enable_device() time */
31 int pcibios_plat_dev_init(struct pci_dev *dev)
34 * We have to reset AMD PCnet adapter on Rockhopper since
35 * PMON leaves it enabled and generating interrupts. This leads
36 * to a lock if some PCI device driver later enables the IRQ line
37 * shared with PCnet and there is no AMD PCnet driver to catch its
40 #ifdef CONFIG_ROCKHOPPER
41 if (dev->vendor == PCI_VENDOR_ID_AMD &&
42 dev->device == PCI_DEVICE_ID_AMD_LANCE) {
43 inl(pci_resource_start(dev, 0) + 0x18);
48 * we have to open the bridges' windows down to 0 because otherwise
49 * we cannot access ISA south bridge I/O registers that get mapped from
50 * 0. for example, 8259 PIC would be unaccessible without that
52 if(dev->vendor == PCI_VENDOR_ID_INTEL && dev->device == PCI_DEVICE_ID_INTEL_S21152BB) {
53 pci_write_config_byte(dev, PCI_IO_BASE, 0);
54 if(dev->bus->number == 0) {
55 pci_write_config_word(dev, PCI_IO_BASE_UPPER16, 0);
57 pci_write_config_word(dev, PCI_IO_BASE_UPPER16, 1);
66 * Feel free to change this, although it shouldn't be needed
68 #define M1535_IRQ_INTA 7
69 #define M1535_IRQ_INTB 9
70 #define M1535_IRQ_INTC 10
71 #define M1535_IRQ_INTD 11
73 #define M1535_IRQ_USB 9
74 #define M1535_IRQ_IDE 14
75 #define M1535_IRQ_IDE2 15
76 #define M1535_IRQ_PS2 12
77 #define M1535_IRQ_RTC 8
78 #define M1535_IRQ_FDC 6
79 #define M1535_IRQ_AUDIO 5
80 #define M1535_IRQ_COM1 4
81 #define M1535_IRQ_COM2 4
82 #define M1535_IRQ_IRDA 3
83 #define M1535_IRQ_KBD 1
84 #define M1535_IRQ_TMR 0
86 /* Rockhopper "slots" assignment; this is hard-coded ... */
87 #define ROCKHOPPER_M5451_SLOT 1
88 #define ROCKHOPPER_M1535_SLOT 2
89 #define ROCKHOPPER_M5229_SLOT 11
90 #define ROCKHOPPER_M5237_SLOT 15
91 #define ROCKHOPPER_PMU_SLOT 12
92 /* ... and hard-wired. */
93 #define ROCKHOPPER_PCI1_SLOT 3
94 #define ROCKHOPPER_PCI2_SLOT 4
95 #define ROCKHOPPER_PCI3_SLOT 5
96 #define ROCKHOPPER_PCI4_SLOT 6
97 #define ROCKHOPPER_PCNET_SLOT 1
99 #define M1535_IRQ_MASK(n) (1 << (n))
101 #define M1535_IRQ_EDGE (M1535_IRQ_MASK(M1535_IRQ_TMR) | \
102 M1535_IRQ_MASK(M1535_IRQ_KBD) | \
103 M1535_IRQ_MASK(M1535_IRQ_COM1) | \
104 M1535_IRQ_MASK(M1535_IRQ_COM2) | \
105 M1535_IRQ_MASK(M1535_IRQ_IRDA) | \
106 M1535_IRQ_MASK(M1535_IRQ_RTC) | \
107 M1535_IRQ_MASK(M1535_IRQ_FDC) | \
108 M1535_IRQ_MASK(M1535_IRQ_PS2))
110 #define M1535_IRQ_LEVEL (M1535_IRQ_MASK(M1535_IRQ_IDE) | \
111 M1535_IRQ_MASK(M1535_IRQ_USB) | \
112 M1535_IRQ_MASK(M1535_IRQ_INTA) | \
113 M1535_IRQ_MASK(M1535_IRQ_INTB) | \
114 M1535_IRQ_MASK(M1535_IRQ_INTC) | \
115 M1535_IRQ_MASK(M1535_IRQ_INTD))
117 struct irq_map_entry {
122 static struct irq_map_entry int_map[] = {
123 {1, ROCKHOPPER_M5451_SLOT, M1535_IRQ_AUDIO}, /* Audio controller */
124 {1, ROCKHOPPER_PCI1_SLOT, M1535_IRQ_INTD}, /* PCI slot #1 */
125 {1, ROCKHOPPER_PCI2_SLOT, M1535_IRQ_INTC}, /* PCI slot #2 */
126 {1, ROCKHOPPER_M5237_SLOT, M1535_IRQ_USB}, /* USB host controller */
127 {1, ROCKHOPPER_M5229_SLOT, IDE_PRIMARY_IRQ}, /* IDE controller */
128 {2, ROCKHOPPER_PCNET_SLOT, M1535_IRQ_INTD}, /* AMD Am79c973 on-board
130 {2, ROCKHOPPER_PCI3_SLOT, M1535_IRQ_INTB}, /* PCI slot #3 */
131 {2, ROCKHOPPER_PCI4_SLOT, M1535_IRQ_INTC} /* PCI slot #4 */
134 static int pci_intlines[] =
135 { M1535_IRQ_INTA, M1535_IRQ_INTB, M1535_IRQ_INTC, M1535_IRQ_INTD };
137 /* Determine the Rockhopper IRQ line number for the PCI device */
138 int rockhopper_get_irq(struct pci_dev *dev, u8 pin, u8 slot)
147 for (i = 0; i < ARRAY_SIZE(int_map); i++) {
148 if (int_map[i].bus == bus->number && int_map[i].slot == slot) {
150 for (line = 0; line < 4; line++)
151 if (pci_intlines[line] == int_map[i].irq)
154 return pci_intlines[(line + (pin - 1)) % 4];
156 return int_map[i].irq;
162 #ifdef CONFIG_ROCKHOPPER
163 void i8259_init(void)
168 outb(0x02, 0x4d1); /* USB IRQ9 is level */
172 int __init pcibios_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
174 extern int pci_probe_only;
177 #ifdef CONFIG_ROCKHOPPER
178 if( dev->bus->number == 1 && vr4133_rockhopper ) {
179 if(slot == ROCKHOPPER_PCI1_SLOT || slot == ROCKHOPPER_PCI2_SLOT)
180 dev->irq = CMBVR41XX_INTA_IRQ;
182 dev->irq = rockhopper_get_irq(dev, pin, slot);
184 dev->irq = CMBVR41XX_INTA_IRQ;
186 dev->irq = CMBVR41XX_INTA_IRQ;
192 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1533, ali_m1535plus_init);
193 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M5229, ali_m5229_init);