1 /*
2 * arch/sh/drivers/pci/ops-landisk.c
3 *
4 * PCI initialization for the I-O DATA Device, Inc. LANDISK board
5 *
6 * Copyright (C) 2006 kogiidena
7 *
8 * May be copied or modified under the terms of the GNU General Public
9 * License. See linux/COPYING for more information.
10 */
11 #include <linux/kernel.h>
12 #include <linux/types.h>
13 #include <linux/init.h>
14 #include <linux/delay.h>
15 #include <linux/pci.h>
16 #include "pci-sh4.h"
17
18 static struct resource sh7751_io_resource = {
19 .name = "SH7751 IO",
20 .start = SH7751_PCI_IO_BASE,
21 .end = SH7751_PCI_IO_BASE + SH7751_PCI_IO_SIZE - 1,
22 .flags = IORESOURCE_IO
23 };
24
25 static struct resource sh7751_mem_resource = {
26 .name = "SH7751 mem",
27 .start = SH7751_PCI_MEMORY_BASE,
28 .end = SH7751_PCI_MEMORY_BASE + SH7751_PCI_MEM_SIZE - 1,
29 .flags = IORESOURCE_MEM
30 };
31
32 struct pci_channel board_pci_channels[] = {
33 {&sh4_pci_ops, &sh7751_io_resource, &sh7751_mem_resource, 0, 0x3ff},
34 {NULL, NULL, NULL, 0, 0},
35 };
36
37 static struct sh4_pci_address_map sh7751_pci_map = {
38 .window0 = {
39 .base = SH7751_CS3_BASE_ADDR,
40 .size = (64 << 20), /* 64MB */
41 },
42
43 .flags = SH4_PCIC_NO_RESET,
44 };
45
pcibios_init_platform(void)46 int __init pcibios_init_platform(void)
47 {
48 return sh7751_pcic_init(&sh7751_pci_map);
49 }
50
pcibios_map_platform_irq(struct pci_dev * pdev,u8 slot,u8 pin)51 int pcibios_map_platform_irq(struct pci_dev *pdev, u8 slot, u8 pin)
52 {
53 /*
54 * slot0: pin1-4 = irq5,6,7,8
55 * slot1: pin1-4 = irq6,7,8,5
56 * slot2: pin1-4 = irq7,8,5,6
57 * slot3: pin1-4 = irq8,5,6,7
58 */
59 int irq = ((slot + pin - 1) & 0x3) + 5;
60
61 if ((slot | (pin - 1)) > 0x3) {
62 printk("PCI: Bad IRQ mapping request for slot %d pin %c\n",
63 slot, pin - 1 + 'A');
64 return -1;
65 }
66 return irq;
67 }
68