freebsd-dev/sys/ofed/include/linux/mm.h
Hans Petter Selasky c7818b48b6 - Update the OFED Linux Emulation layer as a preparation for a
hardware driver update from Mellanox Technologies.
- Remove empty files from the OFED Linux Emulation layer.
- Fix compile warnings related to printf() and the "%lld" and "%llx"
format specifiers.
- Add some missing 2-clause BSD copyrights.
- Add "Mellanox Technologies, Ltd." to list of copyright holders.
- Add some new compatibility files.
- Fix order of uninit in the mlx4ib module to avoid crash at unload
using the new module_exit_order() function.

MFC after:	1 week
Sponsored by:	Mellanox Technologies
2014-08-27 13:21:53 +00:00

86 lines
2.4 KiB
C

/*-
* Copyright (c) 2010 Isilon Systems, Inc.
* Copyright (c) 2010 iX Systems, Inc.
* Copyright (c) 2010 Panasas, Inc.
* Copyright (c) 2013, 2014 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 _LINUX_MM_H_
#define _LINUX_MM_H_
#include <linux/spinlock.h>
#include <linux/gfp.h>
#include <linux/kernel.h>
#define PAGE_ALIGN(x) ALIGN(x, PAGE_SIZE)
struct vm_area_struct {
vm_offset_t vm_start;
vm_offset_t vm_end;
vm_offset_t vm_pgoff;
vm_paddr_t vm_pfn; /* PFN For mmap. */
vm_memattr_t vm_page_prot;
};
/*
* Compute log2 of the power of two rounded up count of pages
* needed for size bytes.
*/
static inline int
get_order(unsigned long size)
{
int order;
size = (size - 1) >> PAGE_SHIFT;
order = 0;
while (size) {
order++;
size >>= 1;
}
return (order);
}
static inline void *
lowmem_page_address(struct page *page)
{
return page_address(page);
}
/*
* This only works via mmap ops.
*/
static inline int
io_remap_pfn_range(struct vm_area_struct *vma,
unsigned long addr, unsigned long pfn, unsigned long size,
vm_memattr_t prot)
{
vma->vm_page_prot = prot;
vma->vm_pfn = pfn;
return (0);
}
#endif /* _LINUX_MM_H_ */