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
80
81
82
83
84
85
86
87
|
/*
* arch/sh/drivers/pci/ops-snapgear.c
*
* Author: David McCullough <davidm@snapgear.com>
*
* Ported to new API by Paul Mundt <lethal@linux-sh.org>
*
* Highly leveraged from pci-bigsur.c, written by Dustin McIntire.
*
* May be copied or modified under the terms of the GNU General Public
* License. See linux/COPYING for more information.
*
* PCI initialization for the SnapGear boards
*/
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/init.h>
#include <linux/pci.h>
#include "pci-sh4.h"
#define SNAPGEAR_PCI_IO 0x4000
#define SNAPGEAR_PCI_MEM 0xfd000000
/* PCI: default LOCAL memory window sizes (seen from PCI bus) */
#define SNAPGEAR_LSR0_SIZE (64*(1<<20)) //64MB
#define SNAPGEAR_LSR1_SIZE (64*(1<<20)) //64MB
static struct resource sh7751_io_resource = {
.name = "SH7751 IO",
.start = SNAPGEAR_PCI_IO,
.end = SNAPGEAR_PCI_IO + (64*1024) - 1, /* 64KiB I/O */
.flags = IORESOURCE_IO,
};
static struct resource sh7751_mem_resource = {
.name = "SH7751 mem",
.start = SNAPGEAR_PCI_MEM,
.end = SNAPGEAR_PCI_MEM + (64*1024*1024) - 1, /* 64MiB mem */
.flags = IORESOURCE_MEM,
};
struct pci_channel board_pci_channels[] = {
{ sh7751_pci_init, &sh4_pci_ops, &sh7751_io_resource, &sh7751_mem_resource, 0, 0xff },
{ 0, }
};
static struct sh4_pci_address_map sh7751_pci_map = {
.window0 = {
.base = SH7751_CS2_BASE_ADDR,
.size = SNAPGEAR_LSR0_SIZE,
},
.window1 = {
.base = SH7751_CS2_BASE_ADDR,
.size = SNAPGEAR_LSR1_SIZE,
},
};
/*
* Initialize the SnapGear PCI interface
* Setup hardware to be Central Funtion
* Copy the BSR regs to the PCI interface
* Setup PCI windows into local RAM
*/
int __init pcibios_init_platform(void)
{
return sh7751_pcic_init(&board_pci_channels[0], &sh7751_pci_map);
}
int __init pcibios_map_platform_irq(struct pci_dev *pdev, u8 slot, u8 pin)
{
int irq = -1;
switch (slot) {
case 8: /* the PCI bridge */ break;
case 11: irq = 8; break; /* USB */
case 12: irq = 11; break; /* PCMCIA */
case 13: irq = 5; break; /* eth0 */
case 14: irq = 8; break; /* eth1 */
case 15: irq = 11; break; /* safenet (unused) */
}
printk("PCI: Mapping SnapGear IRQ for slot %d, pin %c to irq %d\n",
slot, pin - 1 + 'A', irq);
return irq;
}
|
