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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef BOOT_IO_H
#define BOOT_IO_H
#include <asm/shared/io.h>
#undef inb
#undef inw
#undef inl
#undef outb
#undef outw
#undef outl
struct port_io_ops {
u8 (*f_inb)(u16 port);
void (*f_outb)(u8 v, u16 port);
void (*f_outw)(u16 v, u16 port);
};
extern struct port_io_ops pio_ops;
/*
* Use the normal I/O instructions by default.
* TDX guests override these to use hypercalls.
*/
static inline void init_default_io_ops(void)
{
pio_ops.f_inb = __inb;
pio_ops.f_outb = __outb;
pio_ops.f_outw = __outw;
}
/*
* Redirect port I/O operations via pio_ops callbacks.
* TDX guests override these callbacks with TDX-specific helpers.
*/
#define inb pio_ops.f_inb
#define outb pio_ops.f_outb
#define outw pio_ops.f_outw
#endif
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