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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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3603ab2b62
__ioremap() took a set of page table flags (specifically the cacheable and bufferable bits) to control the mapping type. However, with the advent of ARMv6, this is far too limited. Replace the page table flags with a memory type index, so that the desired attributes can be selected from the mem_type table. Finally, to prevent silent miscompilation due to the differing arguments, rename the __ioremap() and __ioremap_pfn() functions. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
59 lines
1.6 KiB
C
59 lines
1.6 KiB
C
/*
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* iop3xx custom ioremap implementation
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* Copyright (c) 2006, Intel Corporation.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc., 59 Temple
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* Place - Suite 330, Boston, MA 02111-1307 USA.
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*
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <asm/hardware.h>
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#include <asm/io.h>
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void * __iomem __iop3xx_ioremap(unsigned long cookie, size_t size,
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unsigned int mtype)
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{
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void __iomem * retval;
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switch (cookie) {
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case IOP3XX_PCI_LOWER_IO_PA ... IOP3XX_PCI_UPPER_IO_PA:
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retval = (void *) IOP3XX_PCI_IO_PHYS_TO_VIRT(cookie);
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break;
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case IOP3XX_PERIPHERAL_PHYS_BASE ... IOP3XX_PERIPHERAL_UPPER_PA:
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retval = (void *) IOP3XX_PMMR_PHYS_TO_VIRT(cookie);
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break;
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default:
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retval = __arm_ioremap(cookie, size, mtype);
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}
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return retval;
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}
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EXPORT_SYMBOL(__iop3xx_ioremap);
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void __iop3xx_iounmap(void __iomem *addr)
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{
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extern void __iounmap(volatile void __iomem *addr);
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switch ((u32) addr) {
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case IOP3XX_PCI_LOWER_IO_VA ... IOP3XX_PCI_UPPER_IO_VA:
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case IOP3XX_PERIPHERAL_VIRT_BASE ... IOP3XX_PERIPHERAL_UPPER_VA:
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goto skip;
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}
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__iounmap(addr);
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skip:
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return;
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}
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EXPORT_SYMBOL(__iop3xx_iounmap);
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