2 * arch/sh/drivers/pci/ops-snapgear.c
4 * Author: David McCullough <davidm@snapgear.com>
6 * Ported to new API by Paul Mundt <lethal@linux-sh.org>
8 * Highly leveraged from pci-bigsur.c, written by Dustin McIntire.
10 * May be copied or modified under the terms of the GNU General Public
11 * License. See linux/COPYING for more information.
13 * PCI initialization for the SnapGear boards
15 #include <linux/kernel.h>
16 #include <linux/types.h>
17 #include <linux/init.h>
18 #include <linux/pci.h>
21 #define SNAPGEAR_PCI_IO 0x4000
22 #define SNAPGEAR_PCI_MEM 0xfd000000
24 /* PCI: default LOCAL memory window sizes (seen from PCI bus) */
25 #define SNAPGEAR_LSR0_SIZE (64*(1<<20)) //64MB
26 #define SNAPGEAR_LSR1_SIZE (64*(1<<20)) //64MB
28 static struct resource sh7751_io_resource = {
30 .start = SNAPGEAR_PCI_IO,
31 .end = SNAPGEAR_PCI_IO + (64*1024) - 1, /* 64KiB I/O */
32 .flags = IORESOURCE_IO,
35 static struct resource sh7751_mem_resource = {
37 .start = SNAPGEAR_PCI_MEM,
38 .end = SNAPGEAR_PCI_MEM + (64*1024*1024) - 1, /* 64MiB mem */
39 .flags = IORESOURCE_MEM,
42 struct pci_channel board_pci_channels[] = {
43 { &sh4_pci_ops, &sh7751_io_resource, &sh7751_mem_resource, 0, 0xff },
47 static struct sh4_pci_address_map sh7751_pci_map = {
49 .base = SH7751_CS2_BASE_ADDR,
50 .size = SNAPGEAR_LSR0_SIZE,
54 .base = SH7751_CS2_BASE_ADDR,
55 .size = SNAPGEAR_LSR1_SIZE,
58 .flags = SH4_PCIC_NO_RESET,
62 * Initialize the SnapGear PCI interface
63 * Setup hardware to be Central Funtion
64 * Copy the BSR regs to the PCI interface
65 * Setup PCI windows into local RAM
67 int __init pcibios_init_platform(void)
69 return sh7751_pcic_init(&sh7751_pci_map);
72 int __init pcibios_map_platform_irq(struct pci_dev *pdev, u8 slot, u8 pin)
77 case 8: /* the PCI bridge */ break;
78 case 11: irq = 8; break; /* USB */
79 case 12: irq = 11; break; /* PCMCIA */
80 case 13: irq = 5; break; /* eth0 */
81 case 14: irq = 8; break; /* eth1 */
82 case 15: irq = 11; break; /* safenet (unused) */
85 printk("PCI: Mapping SnapGear IRQ for slot %d, pin %c to irq %d\n",
86 slot, pin - 1 + 'A', irq);
91 void __init pcibios_fixup(void)
93 /* Nothing to fixup .. */