LXR linux/drivers/net/ethernet/altera/altera

   1/* Altera TSE SGDMA and MSGDMA Linux driver
   2 * Copyright (C) 2014 Altera Corporation. All rights reserved
   3 *
   4 * This program is free software; you can redistribute it and/or modify it
   5 * under the terms and conditions of the GNU General Public License,
   6 * version 2, as published by the Free Software Foundation.
   7 *
   8 * This program is distributed in the hope it will be useful, but WITHOUT
   9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  10 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  11 * more details.
  12 *
  13 * You should have received a copy of the GNU General Public License along with
  14 * this program.  If not, see <http://www.gnu.org/licenses/>.
  15 */
  16
  17#include "altera_tse.h"
  18#include "altera_utils.h"
  19
  20void tse_set_bit(void __iomem *ioaddr, size_t offs, u32 bit_mask)
  21{
  22        u32 value = csrrd32(ioaddr, offs);
  23        value |= bit_mask;
  24        csrwr32(value, ioaddr, offs);
  25}
  26
  27void tse_clear_bit(void __iomem *ioaddr, size_t offs, u32 bit_mask)
  28{
  29        u32 value = csrrd32(ioaddr, offs);
  30        value &= ~bit_mask;
  31        csrwr32(value, ioaddr, offs);
  32}
  33
  34int tse_bit_is_set(void __iomem *ioaddr, size_t offs, u32 bit_mask)
  35{
  36        u32 value = csrrd32(ioaddr, offs);
  37        return (value & bit_mask) ? 1 : 0;
  38}
  39
  40int tse_bit_is_clear(void __iomem *ioaddr, size_t offs, u32 bit_mask)
  41{
  42        u32 value = csrrd32(ioaddr, offs);
  43        return (value & bit_mask) ? 0 : 1;
  44}
  45