tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * arch/sh64/lib/iomap.c
3 *
4 * Generic sh64 iomap interface
5 *
6 * Copyright (C) 2004 Paul Mundt
7 *
8 * This file is subject to the terms and conditions of the GNU General Public
9 * License. See the file "COPYING" in the main directory of this archive
10 * for more details.
11 */
12#include <linux/config.h>
13#include <linux/pci.h>
14#include <asm/io.h>
15
16void __iomem *__attribute__ ((weak))
17ioport_map(unsigned long port, unsigned int len)
18{
19 return (void __iomem *)port;
20}
21
22void ioport_unmap(void __iomem *addr)
23{
24 /* Nothing .. */
25}
26
27void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max)
28{
29 unsigned long start = pci_resource_start(dev, bar);
30 unsigned long len = pci_resource_len(dev, bar);
31 unsigned long flags = pci_resource_flags(dev, bar);
32
33 if (!len)
34 return NULL;
35 if (max && len > max)
36 len = max;
37 if (flags & IORESOURCE_IO)
38 return ioport_map(start + pciio_virt, len);
39 if (flags & IORESOURCE_MEM)
40 return (void __iomem *)start;
41
42 /* What? */
43 return NULL;
44}
45
46void pci_iounmap(struct pci_dev *dev, void __iomem *addr)
47{
48 /* Nothing .. */
49}
50
51EXPORT_SYMBOL(ioport_map);
52EXPORT_SYMBOL(ioport_unmap);
53EXPORT_SYMBOL(pci_iomap);
54EXPORT_SYMBOL(pci_iounmap);
55