9e36fda0b3
io_mapping_* interfaces were added, mainly for graphics drivers. Make this interface go through the PAT reserve/free, instead of hardcoding WC mapping. This makes sure that there are no aliases due to unconditional WC setting. Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
41 lines
1.2 KiB
C
41 lines
1.2 KiB
C
#ifndef _ASM_X86_IOMAP_H
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#define _ASM_X86_IOMAP_H
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/*
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* Copyright © 2008 Ingo Molnar
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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*/
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#include <linux/fs.h>
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#include <linux/mm.h>
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#include <linux/uaccess.h>
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#include <asm/cacheflush.h>
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#include <asm/pgtable.h>
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#include <asm/tlbflush.h>
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void *
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iomap_atomic_prot_pfn(unsigned long pfn, enum km_type type, pgprot_t prot);
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void
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iounmap_atomic(void *kvaddr, enum km_type type);
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int
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iomap_create_wc(resource_size_t base, unsigned long size, pgprot_t *prot);
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void
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iomap_free(resource_size_t base, unsigned long size);
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#endif /* _ASM_X86_IOMAP_H */
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