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 20 void 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 27 void 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 34 int 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 40 int 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