2 * Copyright (c) 2015-2018 François Tigeot <ftigeot@wolfpond.org>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice unmodified, this list of conditions, and the following
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 #include <linux/mmdebug.h>
31 #include <linux/mmzone.h>
32 #include <linux/stddef.h>
34 #include <vm/vm_page.h>
35 #include <machine/bus_dma.h>
37 #define GFP_NOWAIT M_NOWAIT
38 #define GFP_ATOMIC M_NOWAIT
39 #define GFP_KERNEL M_WAITOK
40 #define GFP_TEMPORARY M_WAITOK
41 #define GFP_USER M_WAITOK
42 #define GFP_HIGHUSER M_WAITOK
44 #define __GFP_ZERO M_ZERO
46 #define GFP_DMA32 0x10000 /* XXX: MUST NOT collide with the M_XXX definitions */
48 static inline void __free_page(struct page *page)
50 vm_page_free_contig((struct vm_page *)page, PAGE_SIZE);
53 static inline struct page * alloc_page(int flags)
55 vm_paddr_t high = ~0LLU;
57 if (flags & GFP_DMA32)
58 high = BUS_SPACE_MAXADDR_32BIT;
60 return (struct page *)vm_page_alloc_contig(0LLU, ~0LLU,
61 PAGE_SIZE, PAGE_SIZE, PAGE_SIZE,
65 #endif /* _LINUX_GFP_H_ */