| /* |
| * 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/delay.h> |
| #include <linux/pci.h> |
| |
| #include <asm/io.h> |
| #include "pci-sh7751.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, |
| }; |
| |
| extern struct pci_ops sh7751_pci_ops; |
| |
| struct pci_channel board_pci_channels[] = { |
| { &sh7751_pci_ops, &sh7751_io_resource, &sh7751_mem_resource, 0, 0xff }, |
| { 0, } |
| }; |
| |
| static struct sh7751_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, |
| }, |
| |
| .flags = SH7751_PCIC_NO_RESET, |
| }; |
| |
| /* |
| * 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(&sh7751_pci_map); |
| } |
| |
| int __init pcibios_map_platform_irq(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; |
| } |
| |
| void __init pcibios_fixup(void) |
| { |
| /* Nothing to fixup .. */ |
| } |
| |