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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (C) 2021 Ahmad Fatoum, Pengutronix
*/
#ifndef __ASM_HTIF_LL__
#define __ASM_HTIF_LL__
#define HTIF_DEFAULT_BASE_ADDR 0x40008000
#define HTIF_DEV_SYSCALL 0
#define HTIF_CMD_SYSCALL 0
#define HTIF_DEV_CONSOLE 1 /* blocking character device */
#define HTIF_CMD_GETCHAR 0
#define HTIF_CMD_PUTCHAR 1
#ifndef __ASSEMBLY__
#include <linux/types.h>
#include <io-64-nonatomic-lo-hi.h>
static inline void __htif_tohost(void __iomem *htif, u8 device, u8 command, u64 arg)
{
writeq(((u64)device << 56) | ((u64)command << 48) | arg, htif);
}
static inline void htif_tohost(u8 device, u8 command, u64 arg)
{
__htif_tohost(IOMEM(HTIF_DEFAULT_BASE_ADDR), device, command, arg);
}
static inline void htif_putc(void __iomem *base, int c)
{
__htif_tohost(base, HTIF_DEV_CONSOLE, HTIF_CMD_PUTCHAR, c);
}
#endif
#endif
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