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Commit | Line | Data |
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1da177e4 | 1 | /* |
f30c2269 | 2 | * arch/sh/drivers/pci/fixups-dreamcast.c |
1da177e4 LT |
3 | * |
4 | * PCI fixups for the Sega Dreamcast | |
5 | * | |
6 | * Copyright (C) 2001, 2002 M. R. Brown | |
959f85f8 | 7 | * Copyright (C) 2002, 2003, 2006 Paul Mundt |
1da177e4 LT |
8 | * |
9 | * This file originally bore the message (with enclosed-$): | |
10 | * Id: pci.c,v 1.3 2003/05/04 19:29:46 lethal Exp | |
11 | * Dreamcast PCI: Supports SEGA Broadband Adaptor only. | |
12 | * | |
13 | * This file is subject to the terms and conditions of the GNU General Public | |
14 | * License. See the file "COPYING" in the main directory of this archive | |
15 | * for more details. | |
16 | */ | |
17 | ||
1da177e4 LT |
18 | #include <linux/sched.h> |
19 | #include <linux/kernel.h> | |
20 | #include <linux/param.h> | |
21 | #include <linux/interrupt.h> | |
22 | #include <linux/init.h> | |
23 | #include <linux/irq.h> | |
24 | #include <linux/pci.h> | |
a724605c | 25 | #include <linux/dma-mapping.h> |
1da177e4 LT |
26 | |
27 | #include <asm/io.h> | |
28 | #include <asm/irq.h> | |
f15cbe6f | 29 | #include <mach/pci.h> |
1da177e4 LT |
30 | |
31 | static void __init gapspci_fixup_resources(struct pci_dev *dev) | |
32 | { | |
951a681b | 33 | struct pci_channel *p = dev->sysdata; |
1da177e4 LT |
34 | |
35 | printk(KERN_NOTICE "PCI: Fixing up device %s\n", pci_name(dev)); | |
36 | ||
37 | switch (dev->device) { | |
38 | case PCI_DEVICE_ID_SEGA_BBA: | |
39 | /* | |
40 | * We also assume that dev->devfn == 0 | |
41 | */ | |
b6c58b1d | 42 | dev->resource[1].start = p->resources[0].start + 0x100; |
1da177e4 | 43 | dev->resource[1].end = dev->resource[1].start + 0x200 - 1; |
d556fcc1 PM |
44 | |
45 | /* | |
46 | * This is not a normal BAR, prevent any attempts to move | |
47 | * the BAR, as this will result in a bus lock. | |
48 | */ | |
49 | dev->resource[1].flags |= IORESOURCE_PCI_FIXED; | |
50 | ||
a724605c MD |
51 | /* |
52 | * Redirect dma memory allocations to special memory window. | |
53 | */ | |
54 | BUG_ON(!dma_declare_coherent_memory(&dev->dev, | |
55 | GAPSPCI_DMA_BASE, | |
56 | GAPSPCI_DMA_BASE, | |
57 | GAPSPCI_DMA_SIZE, | |
58 | DMA_MEMORY_MAP | | |
59 | DMA_MEMORY_EXCLUSIVE)); | |
1da177e4 LT |
60 | break; |
61 | default: | |
62 | printk("PCI: Failed resource fixup\n"); | |
63 | } | |
64 | } | |
1da177e4 LT |
65 | DECLARE_PCI_FIXUP_HEADER(PCI_ANY_ID, PCI_ANY_ID, gapspci_fixup_resources); |
66 | ||
d5341942 | 67 | int __init pcibios_map_platform_irq(const struct pci_dev *dev, u8 slot, u8 pin) |
1da177e4 | 68 | { |
959f85f8 PM |
69 | /* |
70 | * The interrupt routing semantics here are quite trivial. | |
71 | * | |
72 | * We basically only support one interrupt, so we only bother | |
73 | * updating a device's interrupt line with this single shared | |
74 | * interrupt. Keeps routing quite simple, doesn't it? | |
1da177e4 | 75 | */ |
959f85f8 | 76 | return GAPSPCI_IRQ; |
1da177e4 | 77 | } |