diff options
| -rw-r--r-- | src/arch/arm/include/armv4/arch/io.h | 8 | ||||
| -rw-r--r-- | src/arch/arm/include/armv7/arch/io.h | 8 | ||||
| -rw-r--r-- | src/arch/arm64/include/armv8/arch/io.h | 8 | ||||
| -rw-r--r-- | src/arch/riscv/include/arch/io.h | 8 | ||||
| -rw-r--r-- | src/device/Kconfig | 6 | ||||
| -rw-r--r-- | src/include/arch-generic/io.h | 96 |
6 files changed, 134 insertions, 0 deletions
diff --git a/src/arch/arm/include/armv4/arch/io.h b/src/arch/arm/include/armv4/arch/io.h new file mode 100644 index 0000000000..b0df7d74cb --- /dev/null +++ b/src/arch/arm/include/armv4/arch/io.h @@ -0,0 +1,8 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#ifndef __ARCH_IO_H__ +#define __ARCH_IO_H__ + +#include <arch-generic/io.h> + +#endif diff --git a/src/arch/arm/include/armv7/arch/io.h b/src/arch/arm/include/armv7/arch/io.h new file mode 100644 index 0000000000..b0df7d74cb --- /dev/null +++ b/src/arch/arm/include/armv7/arch/io.h @@ -0,0 +1,8 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#ifndef __ARCH_IO_H__ +#define __ARCH_IO_H__ + +#include <arch-generic/io.h> + +#endif diff --git a/src/arch/arm64/include/armv8/arch/io.h b/src/arch/arm64/include/armv8/arch/io.h new file mode 100644 index 0000000000..b0df7d74cb --- /dev/null +++ b/src/arch/arm64/include/armv8/arch/io.h @@ -0,0 +1,8 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#ifndef __ARCH_IO_H__ +#define __ARCH_IO_H__ + +#include <arch-generic/io.h> + +#endif diff --git a/src/arch/riscv/include/arch/io.h b/src/arch/riscv/include/arch/io.h new file mode 100644 index 0000000000..b0df7d74cb --- /dev/null +++ b/src/arch/riscv/include/arch/io.h @@ -0,0 +1,8 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#ifndef __ARCH_IO_H__ +#define __ARCH_IO_H__ + +#include <arch-generic/io.h> + +#endif diff --git a/src/device/Kconfig b/src/device/Kconfig index 0fe0a0923f..f1343f8a5f 100644 --- a/src/device/Kconfig +++ b/src/device/Kconfig @@ -525,6 +525,12 @@ config PCI bool default n +config PCI_IOBASE + hex + help + The memory address of a memory-mapped translator that lets the + CPU communicate with peripheral devices over PCI I/O space. + if PCI config DOMAIN_RESOURCE_32BIT_LIMIT diff --git a/src/include/arch-generic/io.h b/src/include/arch-generic/io.h new file mode 100644 index 0000000000..5874fc8425 --- /dev/null +++ b/src/include/arch-generic/io.h @@ -0,0 +1,96 @@ +/* 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 |