arch/arm/mach-netx/include/mach/pfifo.h

   1 /*
   2  * arch/arm/mach-netx/include/mach/pfifo.h
   3  *
   4  * Copyright (c) 2005 Sascha Hauer <s.hauer@pengutronix.de>, 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 */