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Diffstat (limited to 'payloads/libpayload/include/mips/arch/io.h')
-rw-r--r-- | payloads/libpayload/include/mips/arch/io.h | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/payloads/libpayload/include/mips/arch/io.h b/payloads/libpayload/include/mips/arch/io.h new file mode 100644 index 0000000000..d2d9338037 --- /dev/null +++ b/payloads/libpayload/include/mips/arch/io.h @@ -0,0 +1,67 @@ +/* + * This file is part of the libpayload project. + * + * Copyright (C) 2014 Imagination Technologies + * + * Based on arch/armv7/include/arch/io.h: + * Copyright 2013 Google Inc. + * 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 as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef __MIPS_ARCH_IO_H__ +#define __MIPS_ARCH_IO_H__ + +#include <arch/types.h> +#include <arch/cache.h> +#include <arch/byteorder.h> + +#define read8(a) (*(volatile uint8_t *) (a)) +#define read16(a) (*(volatile uint16_t *) (a)) +#define read32(a) (*(volatile uint32_t *) (a)) + +#define write8(v, a) (*(volatile uint8_t *) (a) = (v)) +#define write16(v, a) (*(volatile uint16_t *) (a) = (v)) +#define write32(v, a) (*(volatile uint32_t *) (a) = (v)) + + +/* + * Clear and set bits in one shot. These macros can be used to clear and + * set multiple bits in a register using a single call. These macros can + * also be used to set a multiple-bit bit pattern using a mask, by + * specifying the mask in the 'clear' parameter and the new bit pattern + * in the 'set' parameter. + */ + +#define out_arch(type, endian, a, v) write##type(cpu_to_##endian(v), a) +#define in_arch(type, endian, a) endian##_to_cpu(read##type(a)) + +#define readb(a) read8(a) +#define readw(a) read16(a) +#define readl(a) read32(a) + +#define inb(a) read8(a) +#define inw(a) read16(a) +#define inl(a) read32(a) + +#define writeb(v, a) write8(v, a) +#define writew(v, a) write16(v, a) +#define writel(v, a) write32(v, a) + +#define outb(v, a) write8(v, a) +#define outw(v, a) write16(v, a) +#define outl(v, a) write32(v, a) + +#endif /* __MIPS_ARCH_IO_H__ */ |