6df26700c0
Implement a custom ioremap implementation for iop3xx. This saves establishing new mappings. It also cleans up the PCI IO resource to be a physical address rather than a virtual address as Russell pointed out on the original iop13xx port. Signed-off-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
59 lines
1.6 KiB
C
59 lines
1.6 KiB
C
/*
|
|
* iop3xx custom ioremap implementation
|
|
* Copyright (c) 2006, Intel Corporation.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms and conditions of the GNU General Public License,
|
|
* version 2, as published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope 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/kernel.h>
|
|
#include <linux/module.h>
|
|
#include <asm/hardware.h>
|
|
#include <asm/io.h>
|
|
|
|
void * __iomem __iop3xx_ioremap(unsigned long cookie, size_t size,
|
|
unsigned long flags)
|
|
{
|
|
void __iomem * retval;
|
|
|
|
switch (cookie) {
|
|
case IOP3XX_PCI_LOWER_IO_PA ... IOP3XX_PCI_UPPER_IO_PA:
|
|
retval = (void *) IOP3XX_PCI_IO_PHYS_TO_VIRT(cookie);
|
|
break;
|
|
case IOP3XX_PERIPHERAL_PHYS_BASE ... IOP3XX_PERIPHERAL_UPPER_PA:
|
|
retval = (void *) IOP3XX_PMMR_PHYS_TO_VIRT(cookie);
|
|
break;
|
|
default:
|
|
retval = __ioremap(cookie, size, flags);
|
|
}
|
|
|
|
return retval;
|
|
}
|
|
EXPORT_SYMBOL(__iop3xx_ioremap);
|
|
|
|
void __iop3xx_iounmap(void __iomem *addr)
|
|
{
|
|
extern void __iounmap(volatile void __iomem *addr);
|
|
|
|
switch ((u32) addr) {
|
|
case IOP3XX_PCI_LOWER_IO_VA ... IOP3XX_PCI_UPPER_IO_VA:
|
|
case IOP3XX_PERIPHERAL_VIRT_BASE ... IOP3XX_PERIPHERAL_UPPER_VA:
|
|
goto skip;
|
|
}
|
|
__iounmap(addr);
|
|
|
|
skip:
|
|
return;
|
|
}
|
|
EXPORT_SYMBOL(__iop3xx_iounmap);
|