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
|
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/types.h>
#include <linux/pci.h>
#include <asm/debug.h>
#include <asm/ddb5xxx/ddb5xxx.h>
static struct resource extpci_io_resource = {
.start = 0x1000, /* leave some room for ISA bus */
.end = DDB_PCI_IO_SIZE - 1,
.name = "pci IO space",
.flags = IORESOURCE_IO
};
static struct resource extpci_mem_resource = {
.start = DDB_PCI_MEM_BASE + 0x00100000, /* leave 1 MB for RTC */
.end = DDB_PCI_MEM_BASE + DDB_PCI_MEM_SIZE - 1,
.name = "pci memory space",
.flags = IORESOURCE_MEM
};
extern struct pci_ops ddb5476_ext_pci_ops;
struct pci_controller ddb5476_controller = {
.pci_ops = &ddb5476_ext_pci_ops,
.io_resource = &extpci_io_resource,
.mem_resource = &extpci_mem_resource,
};
#define PCI_EXT_INTA 8
#define PCI_EXT_INTB 9
#define PCI_EXT_INTC 10
#define PCI_EXT_INTD 11
#define PCI_EXT_INTE 12
#define MAX_SLOT_NUM 14
static unsigned char irq_map[MAX_SLOT_NUM] = {
[ 0] = nile4_to_irq(PCI_EXT_INTE),
[ 1] = nile4_to_irq(PCI_EXT_INTA),
[ 2] = nile4_to_irq(PCI_EXT_INTA),
[ 3] = nile4_to_irq(PCI_EXT_INTB),
[ 4] = nile4_to_irq(PCI_EXT_INTC),
[ 5] = nile4_to_irq(NILE4_INT_UART),
[10] = nile4_to_irq(PCI_EXT_INTE),
[13] = nile4_to_irq(PCI_EXT_INTE),
};
int __init pcibios_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
{
return irq_map[slot];
}
/* Do platform specific device initialization at pci_enable_device() time */
int pcibios_plat_dev_init(struct pci_dev *dev)
{
return 0;
}
void __init ddb_pci_reset_bus(void)
{
u32 temp;
/*
* I am not sure about the "official" procedure, the following
* steps work as far as I know:
* We first set PCI cold reset bit (bit 31) in PCICTRL-H.
* Then we clear the PCI warm reset bit (bit 30) to 0 in PCICTRL-H.
* The same is true for both PCI channels.
*/
temp = ddb_in32(DDB_PCICTRL + 4);
temp |= 0x80000000;
ddb_out32(DDB_PCICTRL + 4, temp);
temp &= ~0xc0000000;
ddb_out32(DDB_PCICTRL + 4, temp);
}
|
