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pfifo.h
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1 /*
2  * arch/arm/mach-netx/include/mach/pfifo.h
3  *
4  * Copyright (c) 2005 Sascha Hauer <[email protected]>, Pengutronix
5  *
6  * This program is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License version 2
8  * as published by the Free Software Foundation.
9  *
10  * This program is distributed in the hope that it will be useful,
11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13  * GNU General Public License for more details.
14  *
15  * You should have received a copy of the GNU General Public License
16  * along with this program; if not, write to the Free Software
17  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18  */
19 
20 
21 #ifndef ASM_ARCH_PFIFO_H
22 #define ASM_ARCH_PFIFO_H
23 
24 static inline int pfifo_push(int no, unsigned int pointer)
25 {
26  writel(pointer, NETX_PFIFO_BASE(no));
27  return 0;
28 }
29 
30 static inline unsigned int pfifo_pop(int no)
31 {
32  return readl(NETX_PFIFO_BASE(no));
33 }
34 
35 static inline int pfifo_fill_level(int no)
36 {
37 
38  return readl(NETX_PFIFO_FILL_LEVEL(no));
39 }
40 
41 static inline int pfifo_full(int no)
42 {
43  return readl(NETX_PFIFO_FULL) & (1<<no) ? 1 : 0;
44 }
45 
46 static inline int pfifo_empty(int no)
47 {
48  return readl(NETX_PFIFO_EMPTY) & (1<<no) ? 1 : 0;
49 }
50 
51 int pfifo_request(unsigned int pfifo_mask);
52 void pfifo_free(unsigned int pfifo_mask);
53 
54 #endif /* ASM_ARCH_PFIFO_H */