xref: /dflybsd-src/sys/dev/drm/include/asm/cacheflush.h (revision b86cbe23ee85c4498c25b31ee07b0b55b22b21b3)
1*b86cbe23SFrançois Tigeot /*
2*b86cbe23SFrançois Tigeot  * Copyright (c) 2015 François Tigeot
3*b86cbe23SFrançois Tigeot  * All rights reserved.
4*b86cbe23SFrançois Tigeot  *
5*b86cbe23SFrançois Tigeot  * Redistribution and use in source and binary forms, with or without
6*b86cbe23SFrançois Tigeot  * modification, are permitted provided that the following conditions
7*b86cbe23SFrançois Tigeot  * are met:
8*b86cbe23SFrançois Tigeot  * 1. Redistributions of source code must retain the above copyright
9*b86cbe23SFrançois Tigeot  *    notice unmodified, this list of conditions, and the following
10*b86cbe23SFrançois Tigeot  *    disclaimer.
11*b86cbe23SFrançois Tigeot  * 2. Redistributions in binary form must reproduce the above copyright
12*b86cbe23SFrançois Tigeot  *    notice, this list of conditions and the following disclaimer in the
13*b86cbe23SFrançois Tigeot  *    documentation and/or other materials provided with the distribution.
14*b86cbe23SFrançois Tigeot  *
15*b86cbe23SFrançois Tigeot  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16*b86cbe23SFrançois Tigeot  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17*b86cbe23SFrançois Tigeot  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18*b86cbe23SFrançois Tigeot  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19*b86cbe23SFrançois Tigeot  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20*b86cbe23SFrançois Tigeot  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21*b86cbe23SFrançois Tigeot  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22*b86cbe23SFrançois Tigeot  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23*b86cbe23SFrançois Tigeot  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24*b86cbe23SFrançois Tigeot  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25*b86cbe23SFrançois Tigeot  */
26*b86cbe23SFrançois Tigeot 
27*b86cbe23SFrançois Tigeot #ifndef _ASM_CACHEFLUSH_H_
28*b86cbe23SFrançois Tigeot #define _ASM_CACHEFLUSH_H_
29*b86cbe23SFrançois Tigeot 
30*b86cbe23SFrançois Tigeot static inline int set_pages_uc(struct vm_page *page, int num_pages)
31*b86cbe23SFrançois Tigeot {
32*b86cbe23SFrançois Tigeot 	pmap_change_attr(PHYS_TO_DMAP(VM_PAGE_TO_PHYS(page)),
33*b86cbe23SFrançois Tigeot 			 num_pages << PAGE_SHIFT, PAT_UNCACHED);
34*b86cbe23SFrançois Tigeot 
35*b86cbe23SFrançois Tigeot 	return 0;
36*b86cbe23SFrançois Tigeot }
37*b86cbe23SFrançois Tigeot 
38*b86cbe23SFrançois Tigeot #endif	/* _ASM_CACHEFLUSH_H_ */
39