Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * arch/sh/drivers/pci/ops-snapgear.c |
| 3 | * |
| 4 | * Author: David McCullough <davidm@snapgear.com> |
| 5 | * |
| 6 | * Ported to new API by Paul Mundt <lethal@linux-sh.org> |
| 7 | * |
| 8 | * Highly leveraged from pci-bigsur.c, written by Dustin McIntire. |
| 9 | * |
| 10 | * May be copied or modified under the terms of the GNU General Public |
| 11 | * License. See linux/COPYING for more information. |
| 12 | * |
| 13 | * PCI initialization for the SnapGear boards |
| 14 | */ |
| 15 | |
| 16 | #include <linux/config.h> |
| 17 | #include <linux/kernel.h> |
| 18 | #include <linux/types.h> |
| 19 | #include <linux/init.h> |
| 20 | #include <linux/delay.h> |
| 21 | #include <linux/pci.h> |
| 22 | |
| 23 | #include <asm/io.h> |
| 24 | #include "pci-sh7751.h" |
| 25 | |
| 26 | #define SNAPGEAR_PCI_IO 0x4000 |
| 27 | #define SNAPGEAR_PCI_MEM 0xfd000000 |
| 28 | |
| 29 | /* PCI: default LOCAL memory window sizes (seen from PCI bus) */ |
| 30 | #define SNAPGEAR_LSR0_SIZE (64*(1<<20)) //64MB |
| 31 | #define SNAPGEAR_LSR1_SIZE (64*(1<<20)) //64MB |
| 32 | |
| 33 | static struct resource sh7751_io_resource = { |
| 34 | .name = "SH7751 IO", |
| 35 | .start = SNAPGEAR_PCI_IO, |
| 36 | .end = SNAPGEAR_PCI_IO + (64*1024) - 1, /* 64KiB I/O */ |
| 37 | .flags = IORESOURCE_IO, |
| 38 | }; |
| 39 | |
| 40 | static struct resource sh7751_mem_resource = { |
| 41 | .name = "SH7751 mem", |
| 42 | .start = SNAPGEAR_PCI_MEM, |
| 43 | .end = SNAPGEAR_PCI_MEM + (64*1024*1024) - 1, /* 64MiB mem */ |
| 44 | .flags = IORESOURCE_MEM, |
| 45 | }; |
| 46 | |
| 47 | extern struct pci_ops sh7751_pci_ops; |
| 48 | |
| 49 | struct pci_channel board_pci_channels[] = { |
| 50 | { &sh7751_pci_ops, &sh7751_io_resource, &sh7751_mem_resource, 0, 0xff }, |
| 51 | { 0, } |
| 52 | }; |
| 53 | |
| 54 | static struct sh7751_pci_address_map sh7751_pci_map = { |
| 55 | .window0 = { |
| 56 | .base = SH7751_CS2_BASE_ADDR, |
| 57 | .size = SNAPGEAR_LSR0_SIZE, |
| 58 | }, |
| 59 | |
| 60 | .window1 = { |
| 61 | .base = SH7751_CS2_BASE_ADDR, |
| 62 | .size = SNAPGEAR_LSR1_SIZE, |
| 63 | }, |
| 64 | |
| 65 | .flags = SH7751_PCIC_NO_RESET, |
| 66 | }; |
| 67 | |
| 68 | /* |
| 69 | * Initialize the SnapGear PCI interface |
| 70 | * Setup hardware to be Central Funtion |
| 71 | * Copy the BSR regs to the PCI interface |
| 72 | * Setup PCI windows into local RAM |
| 73 | */ |
| 74 | int __init pcibios_init_platform(void) |
| 75 | { |
| 76 | return sh7751_pcic_init(&sh7751_pci_map); |
| 77 | } |
| 78 | |
| 79 | int __init pcibios_map_platform_irq(u8 slot, u8 pin) |
| 80 | { |
| 81 | int irq = -1; |
| 82 | |
| 83 | switch (slot) { |
| 84 | case 8: /* the PCI bridge */ break; |
| 85 | case 11: irq = 8; break; /* USB */ |
| 86 | case 12: irq = 11; break; /* PCMCIA */ |
| 87 | case 13: irq = 5; break; /* eth0 */ |
| 88 | case 14: irq = 8; break; /* eth1 */ |
| 89 | case 15: irq = 11; break; /* safenet (unused) */ |
| 90 | } |
| 91 | |
| 92 | printk("PCI: Mapping SnapGear IRQ for slot %d, pin %c to irq %d\n", |
| 93 | slot, pin - 1 + 'A', irq); |
| 94 | |
| 95 | return irq; |
| 96 | } |
| 97 | |
| 98 | void __init pcibios_fixup(void) |
| 99 | { |
| 100 | /* Nothing to fixup .. */ |
| 101 | } |
| 102 | |