1e8f93e183
There are two implementations of port I/O helpers: one in the kernel and one in the boot stub. Move the helpers required for both to <asm/shared/io.h> and use the one implementation everywhere. Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lkml.kernel.org/r/20220405232939.73860-15-kirill.shutemov@linux.intel.com
34 lines
724 B
C
34 lines
724 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _ASM_X86_SHARED_IO_H
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#define _ASM_X86_SHARED_IO_H
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#include <linux/types.h>
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#define BUILDIO(bwl, bw, type) \
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static inline void __out##bwl(type value, u16 port) \
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{ \
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asm volatile("out" #bwl " %" #bw "0, %w1" \
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: : "a"(value), "Nd"(port)); \
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} \
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\
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static inline type __in##bwl(u16 port) \
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{ \
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type value; \
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asm volatile("in" #bwl " %w1, %" #bw "0" \
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: "=a"(value) : "Nd"(port)); \
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return value; \
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}
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BUILDIO(b, b, u8)
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BUILDIO(w, w, u16)
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BUILDIO(l, , u32)
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#undef BUILDIO
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#define inb __inb
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#define inw __inw
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#define inl __inl
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#define outb __outb
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#define outw __outw
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#define outl __outl
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#endif
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