cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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altera_utils.c (813B)

      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
      9void 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
     16void 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
     23int 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
     29int 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}