-
Notifications
You must be signed in to change notification settings - Fork 18
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
- Loading branch information
Showing
8 changed files
with
742 additions
and
18 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,94 @@ | ||
| // Copyright 2023 ETH Zurich and University of Bologna. | ||
| // Licensed under the Apache License, Version 2.0, see LICENSE for details. | ||
| // SPDX-License-Identifier: Apache-2.0 | ||
| // | ||
| // Robert Balas <[email protected]> | ||
| // | ||
|
|
||
| /* Description: Memory mapped register I/O access | ||
| */ | ||
|
|
||
| #ifndef __IO_H | ||
| #define __IO_H | ||
|
|
||
| #include <stdint.h> | ||
|
|
||
|
|
||
| /* generic I/O write */ | ||
| static inline void writeb(uint8_t val, uintptr_t addr) | ||
| { | ||
| asm volatile("sb %0, 0(%1)" | ||
| : | ||
| : "r"(val), "r"((volatile uint8_t *)addr) | ||
| : "memory"); | ||
| } | ||
|
|
||
| static inline void writeh(uint16_t val, uintptr_t addr) | ||
| { | ||
| asm volatile("sh %0, 0(%1)" | ||
| : | ||
| : "r"(val), "r"((volatile uint16_t *)addr) | ||
| : "memory"); | ||
| } | ||
|
|
||
| static inline void writew(uint32_t val, uintptr_t addr) | ||
| { | ||
| asm volatile("sw %0, 0(%1)" | ||
| : | ||
| : "r"(val), "r"((volatile uint32_t *)addr) | ||
| : "memory"); | ||
| } | ||
|
|
||
| static inline void writed(uint64_t val, uintptr_t addr) | ||
| { | ||
| asm volatile("sd %0, 0(%1)" | ||
| : | ||
| : "r"(val), "r"((volatile uint64_t *)addr) | ||
| : "memory"); | ||
| } | ||
|
|
||
| /* generic I/O read */ | ||
| static inline uint8_t readb(const uintptr_t addr) | ||
| { | ||
| uint8_t val; | ||
|
|
||
| asm volatile("lb %0, 0(%1)" | ||
| : "=r"(val) | ||
| : "r"((const volatile uint8_t *)addr) | ||
| : "memory"); | ||
| return val; | ||
| } | ||
|
|
||
| static inline uint16_t readh(const uintptr_t addr) | ||
| { | ||
| uint16_t val; | ||
|
|
||
| asm volatile("lh %0, 0(%1)" | ||
| : "=r"(val) | ||
| : "r"((const volatile uint16_t *)addr) | ||
| : "memory"); | ||
| return val; | ||
| } | ||
|
|
||
| static inline uint32_t readw(const uintptr_t addr) | ||
| { | ||
| uint32_t val; | ||
|
|
||
| asm volatile("lw %0, 0(%1)" | ||
| : "=r"(val) | ||
| : "r"((const volatile uint32_t *)addr) | ||
| : "memory"); | ||
| return val; | ||
| } | ||
|
|
||
| static inline uint64_t readd(const uintptr_t addr) | ||
| { | ||
| uint64_t val; | ||
|
|
||
| asm volatile("ld %0, 0(%1)" | ||
| : "=r"(val) | ||
| : "r"((const volatile uint64_t *)addr) | ||
| : "memory"); | ||
| return val; | ||
| } | ||
| #endif |
Oops, something went wrong.