| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| /* |
| * I/O device access primitives. Simplified based on related U-Boot code, |
| * which is in turn based on early versions from the Linux kernel: |
| * |
| * Copyright (C) 1996-2000 Russell King |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 as |
| * published by the Free Software Foundation. |
| */ |
| |
| #ifndef __ARCH_GENERIC_IO_H__ |
| #define __ARCH_GENERIC_IO_H__ |
| |
| #include <stdint.h> |
| #include <stddef.h> |
| #include <endian.h> |
| #include <arch/mmio.h> |
| |
| #define __io(a) (void *)(uintptr_t)(CONFIG_PCI_IOBASE + a) |
| |
| static inline void outb(uint8_t value, uint16_t port) |
| { |
| write8(__io(port), value); |
| } |
| |
| static inline void outw(uint16_t value, uint16_t port) |
| { |
| write16(__io(port), cpu_to_le16(value)); |
| } |
| |
| static inline void outl(uint32_t value, uint16_t port) |
| { |
| write32(__io(port), cpu_to_le32(value)); |
| } |
| |
| static inline uint8_t inb(uint16_t port) |
| { |
| return read8(__io(port)); |
| } |
| |
| static inline uint16_t inw(uint16_t port) |
| { |
| return le16_to_cpu(read16(__io(port))); |
| } |
| |
| static inline uint32_t inl(uint16_t port) |
| { |
| return le32_to_cpu(read32(__io(port))); |
| } |
| |
| static inline void outsb(uint16_t port, const void *addr, unsigned long count) |
| { |
| uint8_t *buf = (uint8_t *)addr; |
| while (count--) |
| write8(__io(port), *buf++); |
| } |
| |
| static inline void outsw(uint16_t port, const void *addr, unsigned long count) |
| { |
| uint16_t *buf = (uint16_t *)addr; |
| while (count--) |
| write16(__io(port), *buf++); |
| } |
| |
| static inline void outsl(uint16_t port, const void *addr, unsigned long count) |
| { |
| uint32_t *buf = (uint32_t *)addr; |
| while (count--) |
| write32(__io(port), *buf++); |
| } |
| |
| static inline void insb(uint16_t port, void *addr, unsigned long count) |
| { |
| uint8_t *buf = (uint8_t *)addr; |
| while (count--) |
| *buf++ = read8(__io(port)); |
| } |
| |
| static inline void insw(uint16_t port, void *addr, unsigned long count) |
| { |
| uint16_t *buf = (uint16_t *)addr; |
| while (count--) |
| *buf++ = read16(__io(port)); |
| } |
| |
| static inline void insl(uint16_t port, void *addr, unsigned long count) |
| { |
| uint32_t *buf = (uint32_t *)addr; |
| while (count--) |
| *buf++ = read32(__io(port)); |
| } |
| |
| #endif |