https://github.com/torvalds/linux
- HEAD
- refs/heads/arm64-uaccess
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/certifi-2024.7.4
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/idna-3.7
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/requests-2.32.2
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/setuptools-70.0.0
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/urllib3-2.2.2
- refs/heads/master
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Tip revision: 80c218812786f619c9a1ce50d0e7c32c7afde4de authored by Linus Torvalds on 08 November 2006, 02:24:20 UTC
Linux 2.6.19-rc5
Linux 2.6.19-rc5
Tip revision: 80c2188
iomap.c
/*
* iomap.c, Memory Mapped I/O routines for MIPS architecture.
*
* This code is based on lib/iomap.c, by Linus Torvalds.
*
* Copyright (C) 2004-2005 Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <linux/ioport.h>
#include <linux/module.h>
#include <linux/pci.h>
#include <asm/io.h>
void __iomem *ioport_map(unsigned long port, unsigned int nr)
{
unsigned long end;
end = port + nr - 1UL;
if (ioport_resource.start > port ||
ioport_resource.end < end || port > end)
return NULL;
return (void __iomem *)(mips_io_port_base + port);
}
void ioport_unmap(void __iomem *addr)
{
}
EXPORT_SYMBOL(ioport_map);
EXPORT_SYMBOL(ioport_unmap);
void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long maxlen)
{
unsigned long start, len, flags;
if (dev == NULL)
return NULL;
start = pci_resource_start(dev, bar);
len = pci_resource_len(dev, bar);
if (!start || !len)
return NULL;
if (maxlen != 0 && len > maxlen)
len = maxlen;
flags = pci_resource_flags(dev, bar);
if (flags & IORESOURCE_IO)
return ioport_map(start, len);
if (flags & IORESOURCE_MEM) {
if (flags & IORESOURCE_CACHEABLE)
return ioremap_cachable(start, len);
return ioremap_nocache(start, len);
}
return NULL;
}
void pci_iounmap(struct pci_dev *dev, void __iomem *addr)
{
iounmap(addr);
}
EXPORT_SYMBOL(pci_iomap);
EXPORT_SYMBOL(pci_iounmap);