diff options
Diffstat (limited to 'sys/compat/linuxkpi/common/include/linux/mm.h')
| -rw-r--r-- | sys/compat/linuxkpi/common/include/linux/mm.h | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/sys/compat/linuxkpi/common/include/linux/mm.h b/sys/compat/linuxkpi/common/include/linux/mm.h new file mode 100644 index 0000000..3835e34 --- /dev/null +++ b/sys/compat/linuxkpi/common/include/linux/mm.h @@ -0,0 +1,111 @@ +/*- + * Copyright (c) 2010 Isilon Systems, Inc. + * Copyright (c) 2010 iX Systems, Inc. + * Copyright (c) 2010 Panasas, Inc. + * Copyright (c) 2013-2015 Mellanox Technologies, Ltd. + * Copyright (c) 2015 François Tigeot + * Copyright (c) 2015 Matthew Dillon <dillon@backplane.com> + * 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. + * + * $FreeBSD$ + */ +#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_size_t vm_len; /* length 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; + vma->vm_len = size; + + return (0); +} + +static inline unsigned long +vma_pages(struct vm_area_struct *vma) +{ + return ((vma->vm_end - vma->vm_start) >> PAGE_SHIFT); +} + +#define offset_in_page(off) ((off) & (PAGE_SIZE - 1)) + +static inline void +set_page_dirty(struct vm_page *page) +{ + vm_page_dirty(page); +} + +static inline void +get_page(struct vm_page *page) +{ + vm_page_hold(page); +} + +#endif /* _LINUX_MM_H_ */ |
