1 /*
2 * MMIO helper library header file.
3 *
4 * Copyright (C) 2019 Texas Instruments Incorporated - http://www.ti.com/
5 * Lokesh Vutla <lokeshvutla@ti.com>
6 * Nishanth Menon <nm@ti.com>
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 *
12 * Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 *
15 * Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the
18 * distribution.
19 *
20 * Neither the name of Texas Instruments Incorporated nor the names of
21 * its contributors may be used to endorse or promote products derived
22 * from this software without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
25 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
26 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
27 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
28 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
29 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
30 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
31 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
32 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
33 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
34 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
35 */
37 #ifndef __MMIO_H
38 #define __MMIO_H
40 #include <stdio.h>
41 #include <stdint.h>
42 #include <stdarg.h>
43 #include <stddef.h>
44 #include <ctype.h>
46 void mmio_write_8(uintptr_t addr, uint8_t value);
48 uint8_t mmio_read_8(uintptr_t addr);
50 void mmio_write_16(uintptr_t addr, uint16_t value);
52 uint16_t mmio_read_16(uintptr_t addr);
54 void mmio_write_32(uintptr_t addr, uint32_t value);
56 uint32_t mmio_read_32(uintptr_t addr);
58 void mmio_write_64(uintptr_t addr, uint64_t value);
60 uint64_t mmio_read_64(uintptr_t addr);
62 static inline void mmio_clrbits_32(uintptr_t addr, uint32_t clear)
63 {
64 mmio_write_32(addr, mmio_read_32(addr) & ~clear);
65 }
67 static inline void mmio_setbits_32(uintptr_t addr, uint32_t set)
68 {
69 mmio_write_32(addr, mmio_read_32(addr) | set);
70 }
72 static inline void mmio_clrsetbits_32(uintptr_t addr,
73 uint32_t clear, uint32_t set)
74 {
75 mmio_write_32(addr, (mmio_read_32(addr) & ~clear) | set);
76 }
78 #endif /* __MMIO_H */