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