drivers/net/ethernet/altera/altera_utils.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /* Altera TSE SGDMA and MSGDMA Linux driver
   3  * Copyright (C) 2014 Altera Corporation. All rights reserved
   4  */
   5
   6 #include "altera_tse.h"
   7 #include "altera_utils.h"
   8
   9 void tse_set_bit(void __iomem *ioaddr, size_t offs, u32 bit_mask)
  10 {
  11         u32 value = csrrd32(ioaddr, offs);
  12         value |= bit_mask;
  13         csrwr32(value, ioaddr, offs);
  14 }
  15
  16 void tse_clear_bit(void __iomem *ioaddr, size_t offs, u32 bit_mask)
  17 {
  18         u32 value = csrrd32(ioaddr, offs);
  19         value &= ~bit_mask;
  20         csrwr32(value, ioaddr, offs);
  21 }
  22
  23 int tse_bit_is_set(void __iomem *ioaddr, size_t offs, u32 bit_mask)
  24 {
  25         u32 value = csrrd32(ioaddr, offs);
  26         return (value & bit_mask) ? 1 : 0;
  27 }
  28
  29 int tse_bit_is_clear(void __iomem *ioaddr, size_t offs, u32 bit_mask)
  30 {
  31         u32 value = csrrd32(ioaddr, offs);
  32         return (value & bit_mask) ? 0 : 1;
  33 }