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linuxkpi: Add asm/set_memory.h

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Provide functions needed for drm-kmod.

MFC after:      1 week
Sponsored by:	Beckhoff Automation GmbH & Co. KG
Differential Revision:	https://reviews.freebsd.org/D35571
This commit is contained in:
Emmanuel Vadot 2022-06-23 10:14:30 +02:00
parent 137e91dbf6
commit 0e45856f9a
1 changed files with 117 additions and 0 deletions
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117
sys/compat/linuxkpi/common/include/asm/set_memory.h Normal file
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/*-
* Copyright (c) 2010 Isilon Systems, Inc.
* Copyright (c) 2016 Matt Macy (mmacy@nextbsd.org)
* Copyright (c) 2017 Mellanox Technologies, Ltd.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice unmodified, this list of conditions, and the following
* disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _LINUXKPI_ASM_SET_MEMORY_H_
#define _LINUXKPI_ASM_SET_MEMORY_H_
#include <linux/page.h>
static inline int
set_memory_uc(unsigned long addr, int numpages)
{
return (pmap_change_attr(addr, numpages, VM_MEMATTR_UNCACHEABLE));
}
static inline int
set_memory_wc(unsigned long addr, int numpages)
{
#ifdef VM_MEMATTR_WRITE_COMBINING
return (pmap_change_attr(addr, numpages, VM_MEMATTR_WRITE_COMBINING));
#else
return (set_memory_uc(addr, numpages));
#endif
}
static inline int
set_memory_wb(unsigned long addr, int numpages)
{
return (pmap_change_attr(addr, numpages, VM_MEMATTR_WRITE_BACK));
}
static inline int
set_pages_uc(vm_page_t page, int numpages)
{
KASSERT(numpages == 1, ("%s: numpages %d", __func__, numpages));
pmap_page_set_memattr(page, VM_MEMATTR_UNCACHEABLE);
return (0);
}
static inline int
set_pages_wc(vm_page_t page, int numpages)
{
KASSERT(numpages == 1, ("%s: numpages %d", __func__, numpages));
#ifdef VM_MEMATTR_WRITE_COMBINING
pmap_page_set_memattr(page, VM_MEMATTR_WRITE_COMBINING);
#else
return (set_pages_uc(page, numpages));
#endif
return (0);
}
static inline int
set_pages_wb(vm_page_t page, int numpages)
{
KASSERT(numpages == 1, ("%s: numpages %d", __func__, numpages));
pmap_page_set_memattr(page, VM_MEMATTR_WRITE_BACK);
return (0);
}
static inline int
set_pages_array_wb(vm_page_t *pages, int addrinarray)
{
int i;
for (i = 0; i < addrinarray; i++)
set_pages_wb(pages[i], 1);
return (0);
}
static inline int
set_pages_array_wc(vm_page_t *pages, int addrinarray)
{
int i;
for (i = 0; i < addrinarray; i++)
set_pages_wc(pages[i], 1);
return (0);
}
static inline int
set_pages_array_uc(vm_page_t *pages, int addrinarray)
{
int i;
for (i = 0; i < addrinarray; i++)
set_pages_uc(pages[i], 1);
return (0);
}
#endif /* _LINUXKPI_ASM_SET_MEMORY_H_ */