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1#include <linux/init.h>
2#include <linux/pci.h>
3
4/* PCI interrupt pins */
5#define PCIA 1
6#define PCIB 2
7#define PCIC 3
8#define PCID 4
9
10/* This table is filled in by interrogating the PIIX4 chip */
11static char pci_irq[5] __initdata;
12
13static char irq_tab[][5] __initdata = {
14 /* INTA INTB INTC INTD */
15 {0, 0, 0, 0, 0 }, /* 0: GT64120 PCI bridge */
16 {0, 0, 0, 0, 0 }, /* 1: Unused */
17 {0, 0, 0, 0, 0 }, /* 2: Unused */
18 {0, 0, 0, 0, 0 }, /* 3: Unused */
19 {0, 0, 0, 0, 0 }, /* 4: Unused */
20 {0, 0, 0, 0, 0 }, /* 5: Unused */
21 {0, 0, 0, 0, 0 }, /* 6: Unused */
22 {0, 0, 0, 0, 0 }, /* 7: Unused */
23 {0, 0, 0, 0, 0 }, /* 8: Unused */
24 {0, 0, 0, 0, 0 }, /* 9: Unused */
25 {0, 0, 0, 0, PCID }, /* 10: PIIX4 USB */
26 {0, PCIB, 0, 0, 0 }, /* 11: AMD 79C973 Ethernet */
27 {0, PCIC, 0, 0, 0 }, /* 12: Crystal 4281 Sound */
28 {0, 0, 0, 0, 0 }, /* 13: Unused */
29 {0, 0, 0, 0, 0 }, /* 14: Unused */
30 {0, 0, 0, 0, 0 }, /* 15: Unused */
31 {0, 0, 0, 0, 0 }, /* 16: Unused */
32 {0, 0, 0, 0, 0 }, /* 17: Bonito/SOC-it PCI Bridge*/
33 {0, PCIA, PCIB, PCIC, PCID }, /* 18: PCI Slot 1 */
34 {0, PCIB, PCIC, PCID, PCIA }, /* 19: PCI Slot 2 */
35 {0, PCIC, PCID, PCIA, PCIB }, /* 20: PCI Slot 3 */
36 {0, PCID, PCIA, PCIB, PCIC } /* 21: PCI Slot 4 */
37};
38
39int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
40{
41 int virq;
42 virq = irq_tab[slot][pin];
43 return pci_irq[virq];
44}
45
46/* Do platform specific device initialization at pci_enable_device() time */
47int pcibios_plat_dev_init(struct pci_dev *dev)
48{
49 return 0;
50}
51
52static void __init malta_piix_func0_fixup(struct pci_dev *pdev)
53{
54 unsigned char reg_val;
55 static int piixirqmap[16] __initdata = { /* PIIX PIRQC[A:D] irq mappings */
56 0, 0, 0, 3,
57 4, 5, 6, 7,
58 0, 9, 10, 11,
59 12, 0, 14, 15
60 };
61 int i;
62
63 /* Interrogate PIIX4 to get PCI IRQ mapping */
64 for (i = 0; i <= 3; i++) {
65 pci_read_config_byte(pdev, 0x60+i, ®_val);
66 if (reg_val & 0x80)
67 pci_irq[PCIA+i] = 0; /* Disabled */
68 else
69 pci_irq[PCIA+i] = piixirqmap[reg_val & 15];
70 }
71
72 /* Done by YAMON 2.00 onwards */
73 if (PCI_SLOT(pdev->devfn) == 10) {
74 /*
75 * Set top of main memory accessible by ISA or DMA
76 * devices to 16 Mb.
77 */
78 pci_read_config_byte(pdev, 0x69, ®_val);
79 pci_write_config_byte(pdev, 0x69, reg_val | 0xf0);
80 }
81}
82
83DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371AB_0,
84 malta_piix_func0_fixup);
85
86static void __init malta_piix_func1_fixup(struct pci_dev *pdev)
87{
88 unsigned char reg_val;
89
90 /* Done by YAMON 2.02 onwards */
91 if (PCI_SLOT(pdev->devfn) == 10) {
92 /*
93 * IDE Decode enable.
94 */
95 pci_read_config_byte(pdev, 0x41, ®_val);
96 pci_write_config_byte(pdev, 0x41, reg_val|0x80);
97 pci_read_config_byte(pdev, 0x43, ®_val);
98 pci_write_config_byte(pdev, 0x43, reg_val|0x80);
99 }
100}
101
102DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371AB,
103 malta_piix_func1_fixup);
1#include <linux/init.h>
2#include <linux/pci.h>
3
4/* PCI interrupt pins */
5#define PCIA 1
6#define PCIB 2
7#define PCIC 3
8#define PCID 4
9
10/* This table is filled in by interrogating the PIIX4 chip */
11static char pci_irq[5] __initdata;
12
13static char irq_tab[][5] __initdata = {
14 /* INTA INTB INTC INTD */
15 {0, 0, 0, 0, 0 }, /* 0: GT64120 PCI bridge */
16 {0, 0, 0, 0, 0 }, /* 1: Unused */
17 {0, 0, 0, 0, 0 }, /* 2: Unused */
18 {0, 0, 0, 0, 0 }, /* 3: Unused */
19 {0, 0, 0, 0, 0 }, /* 4: Unused */
20 {0, 0, 0, 0, 0 }, /* 5: Unused */
21 {0, 0, 0, 0, 0 }, /* 6: Unused */
22 {0, 0, 0, 0, 0 }, /* 7: Unused */
23 {0, 0, 0, 0, 0 }, /* 8: Unused */
24 {0, 0, 0, 0, 0 }, /* 9: Unused */
25 {0, 0, 0, 0, PCID }, /* 10: PIIX4 USB */
26 {0, PCIB, 0, 0, 0 }, /* 11: AMD 79C973 Ethernet */
27 {0, PCIC, 0, 0, 0 }, /* 12: Crystal 4281 Sound */
28 {0, 0, 0, 0, 0 }, /* 13: Unused */
29 {0, 0, 0, 0, 0 }, /* 14: Unused */
30 {0, 0, 0, 0, 0 }, /* 15: Unused */
31 {0, 0, 0, 0, 0 }, /* 16: Unused */
32 {0, 0, 0, 0, 0 }, /* 17: Bonito/SOC-it PCI Bridge*/
33 {0, PCIA, PCIB, PCIC, PCID }, /* 18: PCI Slot 1 */
34 {0, PCIB, PCIC, PCID, PCIA }, /* 19: PCI Slot 2 */
35 {0, PCIC, PCID, PCIA, PCIB }, /* 20: PCI Slot 3 */
36 {0, PCID, PCIA, PCIB, PCIC } /* 21: PCI Slot 4 */
37};
38
39int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
40{
41 int virq;
42 virq = irq_tab[slot][pin];
43 return pci_irq[virq];
44}
45
46/* Do platform specific device initialization at pci_enable_device() time */
47int pcibios_plat_dev_init(struct pci_dev *dev)
48{
49 return 0;
50}
51
52static void __devinit malta_piix_func0_fixup(struct pci_dev *pdev)
53{
54 unsigned char reg_val;
55 static int piixirqmap[16] __devinitdata = { /* PIIX PIRQC[A:D] irq mappings */
56 0, 0, 0, 3,
57 4, 5, 6, 7,
58 0, 9, 10, 11,
59 12, 0, 14, 15
60 };
61 int i;
62
63 /* Interrogate PIIX4 to get PCI IRQ mapping */
64 for (i = 0; i <= 3; i++) {
65 pci_read_config_byte(pdev, 0x60+i, ®_val);
66 if (reg_val & 0x80)
67 pci_irq[PCIA+i] = 0; /* Disabled */
68 else
69 pci_irq[PCIA+i] = piixirqmap[reg_val & 15];
70 }
71
72 /* Done by YAMON 2.00 onwards */
73 if (PCI_SLOT(pdev->devfn) == 10) {
74 /*
75 * Set top of main memory accessible by ISA or DMA
76 * devices to 16 Mb.
77 */
78 pci_read_config_byte(pdev, 0x69, ®_val);
79 pci_write_config_byte(pdev, 0x69, reg_val | 0xf0);
80 }
81}
82
83DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371AB_0,
84 malta_piix_func0_fixup);
85
86static void __devinit malta_piix_func1_fixup(struct pci_dev *pdev)
87{
88 unsigned char reg_val;
89
90 /* Done by YAMON 2.02 onwards */
91 if (PCI_SLOT(pdev->devfn) == 10) {
92 /*
93 * IDE Decode enable.
94 */
95 pci_read_config_byte(pdev, 0x41, ®_val);
96 pci_write_config_byte(pdev, 0x41, reg_val|0x80);
97 pci_read_config_byte(pdev, 0x43, ®_val);
98 pci_write_config_byte(pdev, 0x43, reg_val|0x80);
99 }
100}
101
102DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371AB,
103 malta_piix_func1_fixup);