mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-12 05:36:43 +07:00
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>
42 lines
1.2 KiB
C
42 lines
1.2 KiB
C
#ifndef _ASM_X86_IOMAP_H
|
|
#define _ASM_X86_IOMAP_H
|
|
|
|
/*
|
|
* Copyright © 2008 Ingo Molnar
|
|
*
|
|
* 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/fs.h>
|
|
#include <linux/mm.h>
|
|
#include <linux/uaccess.h>
|
|
#include <asm/cacheflush.h>
|
|
#include <asm/pgtable.h>
|
|
#include <asm/tlbflush.h>
|
|
|
|
void *
|
|
iomap_atomic_prot_pfn(unsigned long pfn, enum km_type type, pgprot_t prot);
|
|
|
|
void
|
|
iounmap_atomic(void *kvaddr, enum km_type type);
|
|
|
|
int
|
|
iomap_create_wc(resource_size_t base, unsigned long size, pgprot_t *prot);
|
|
|
|
void
|
|
iomap_free(resource_size_t base, unsigned long size);
|
|
|
|
#endif /* _ASM_X86_IOMAP_H */
|