LXR linux/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
  24static inline int pfifo_push(int no, unsigned int pointer)
  25{
  26        writel(pointer, NETX_PFIFO_BASE(no));
  27        return 0;
  28}
  29
  30static inline unsigned int pfifo_pop(int no)
  31{
  32        return readl(NETX_PFIFO_BASE(no));
  33}
  34
  35static inline int pfifo_fill_level(int no)
  36{
  37
  38        return readl(NETX_PFIFO_FILL_LEVEL(no));
  39}
  40
  41static inline int pfifo_full(int no)
  42{
  43        return readl(NETX_PFIFO_FULL) & (1<<no) ? 1 : 0;
  44}
  45
  46static inline int pfifo_empty(int no)
  47{
  48        return readl(NETX_PFIFO_EMPTY) & (1<<no) ? 1 : 0;
  49}
  50
  51int pfifo_request(unsigned int pfifo_mask);
  52void pfifo_free(unsigned int pfifo_mask);
  53
  54#endif /* ASM_ARCH_PFIFO_H */
  55