pci.c (d7cdc9e8ac82c43fdcd4fde6b5b53d2dcba7f707) pci.c (959f85f8a3223c116bbe95dd8a9b207790b5d4d3)
1/*
2 * arch/sh/drivers/pci/pci.c
3 *
4 * Copyright (c) 2002 M. R. Brown <mrbrown@linux-sh.org>
5 * Copyright (c) 2004 - 2006 Paul Mundt <lethal@linux-sh.org>
6 *
7 * These functions are collected here to reduce duplication of common
8 * code amongst the many platform-specific PCI support code files.

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16 * License. See the file "COPYING" in the main directory of this archive
17 * for more details.
18 */
19#include <linux/kernel.h>
20#include <linux/pci.h>
21#include <linux/init.h>
22#include <asm/io.h>
23
1/*
2 * arch/sh/drivers/pci/pci.c
3 *
4 * Copyright (c) 2002 M. R. Brown <mrbrown@linux-sh.org>
5 * Copyright (c) 2004 - 2006 Paul Mundt <lethal@linux-sh.org>
6 *
7 * These functions are collected here to reduce duplication of common
8 * code amongst the many platform-specific PCI support code files.

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16 * License. See the file "COPYING" in the main directory of this archive
17 * for more details.
18 */
19#include <linux/kernel.h>
20#include <linux/pci.h>
21#include <linux/init.h>
22#include <asm/io.h>
23
24static inline u8 bridge_swizzle(u8 pin, u8 slot)
25{
26 return (((pin - 1) + slot) % 4) + 1;
27}
28
29static u8 __init simple_swizzle(struct pci_dev *dev, u8 *pinp)
30{
31 u8 pin = *pinp;
32
33 while (dev->bus->parent) {
34 pin = bridge_swizzle(pin, PCI_SLOT(dev->devfn));
35 /* Move up the chain of bridges. */
36 dev = dev->bus->self;
37 }
38 *pinp = pin;
39
40 /* The slot is the slot of the last bridge. */
41 return PCI_SLOT(dev->devfn);
42}
43
24static int __init pcibios_init(void)
25{
26 struct pci_channel *p;
27 struct pci_bus *bus;
28 int busno;
29
30#ifdef CONFIG_PCI_AUTO
31 /* assign resources */
32 busno = 0;
33 for (p = board_pci_channels; p->pci_ops != NULL; p++)
34 busno = pciauto_assign_resources(busno, p) + 1;
35#endif
36
37 /* scan the buses */
38 busno = 0;
44static int __init pcibios_init(void)
45{
46 struct pci_channel *p;
47 struct pci_bus *bus;
48 int busno;
49
50#ifdef CONFIG_PCI_AUTO
51 /* assign resources */
52 busno = 0;
53 for (p = board_pci_channels; p->pci_ops != NULL; p++)
54 busno = pciauto_assign_resources(busno, p) + 1;
55#endif
56
57 /* scan the buses */
58 busno = 0;
39 for (p= board_pci_channels; p->pci_ops != NULL; p++) {
59 for (p = board_pci_channels; p->pci_ops != NULL; p++) {
40 bus = pci_scan_bus(busno, p->pci_ops, p);
60 bus = pci_scan_bus(busno, p->pci_ops, p);
41 busno = bus->subordinate+1;
61 busno = bus->subordinate + 1;
42 }
43
62 }
63
44 /* board-specific fixups */
45 pcibios_fixup_irqs();
64 pci_fixup_irqs(simple_swizzle, pcibios_map_platform_irq);
46
47 return 0;
48}
65
66 return 0;
67}
49
50subsys_initcall(pcibios_init);
51
68subsys_initcall(pcibios_init);
69
70/*
71 * Called after each bus is probed, but before its children
72 * are examined.
73 */
74void __init pcibios_fixup_bus(struct pci_bus *bus)
75{
76 pci_read_bridge_bases(bus);
77}
78
52void
53pcibios_update_resource(struct pci_dev *dev, struct resource *root,
54 struct resource *res, int resource)
55{
56 u32 new, check;
57 int reg;
58
59 new = res->start | (res->flags & PCI_REGION_FLAG_MASK);

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187 * their own.
188 * -- PFM.
189 */
190 if (flags & (IORESOURCE_IO | IORESOURCE_MEM))
191 return ioport_map(start, len);
192
193 return NULL;
194}
79void
80pcibios_update_resource(struct pci_dev *dev, struct resource *root,
81 struct resource *res, int resource)
82{
83 u32 new, check;
84 int reg;
85
86 new = res->start | (res->flags & PCI_REGION_FLAG_MASK);

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214 * their own.
215 * -- PFM.
216 */
217 if (flags & (IORESOURCE_IO | IORESOURCE_MEM))
218 return ioport_map(start, len);
219
220 return NULL;
221}
222EXPORT_SYMBOL(pci_iomap);
195
196void pci_iounmap(struct pci_dev *dev, void __iomem *addr)
197{
198 iounmap(addr);
199}
223
224void pci_iounmap(struct pci_dev *dev, void __iomem *addr)
225{
226 iounmap(addr);
227}
200
201EXPORT_SYMBOL(pci_iomap);
202EXPORT_SYMBOL(pci_iounmap);
228EXPORT_SYMBOL(pci_iounmap);