[M] Change in coreboot[master]: arch/x86: Add bitwise operations for IO space

[Kyösti Mälkki (Code Review)]

Kyösti Mälkki has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/70041 )

Change subject: arch/x86: Add bitwise operations for IO space
......................................................................

arch/x86: Add bitwise operations for IO space

Change-Id: Ia3e1146f062dced1b75195846ea65a44e2bd4482
Signed-off-by: Kyösti Mälkki 
---
A src/arch/x86/include/arch/io_bitops.h
1 file changed, 93 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/41/70041/1

diff --git a/src/arch/x86/include/arch/io_bitops.h b/src/arch/x86/include/arch/io_bitops.h
new file mode 100644
index 0000000..d18cbcc
--- /dev/null
+++ b/src/arch/x86/include/arch/io_bitops.h
@@ -0,0 +1,83 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#ifndef __ARCH_IO_BITOPS__
+#define __ARCH_IO_BITOPS__
+
+#include <arch/io.h>
+#include <types.h>
+
+static inline u32 io_read32(const u16 addr)
+{
+	return inl(addr);
+}
+
+static inline u16 io_read16(const u16 addr)
+{
+	return inw(addr);
+}
+
+static inline u8 io_read8(const u16 addr)
+{
+	return inb(addr);
+}
+
+static inline void io_write32(const u16 addr, const u32 value)
+{
+	outl(value, addr);
+}
+
+static inline void io_write16(const u16 addr, const u16 value)
+{
+	outw(value, addr);
+}
+
+static inline void io_write8(const u16 addr, const u8 value)
+{
+	outb(value, addr);
+}
+
+static inline u32 io_rwc32(const u16 addr)
+{
+	u32 reg = io_read32(addr);
+	io_write32(reg, addr);
+	return reg;
+}
+
+static inline u16 io_rwc16(const u16 addr)
+{
+	u16 reg = io_read16(addr);
+	io_write16(addr, reg);
+	return reg;
+}
+
+static inline u8 io_rwc8(const u16 addr)
+{
+	u8 reg = io_read8(addr);
+	io_write8(addr, reg);
+	return reg;
+}
+
+static inline void io_clrsetbits32(const u16 addr, const u32 clr, const u32 set)
+{
+	io_write32(addr, (io_read32(addr) & ~clr) | set);
+}
+
+static inline void io_clrsetbits16(const u16 addr, const u16 clr, const u16 set)
+{
+	io_write16(addr, (io_read16(addr) & ~clr) | set);
+}
+
+static inline void io_clrsetbits8(const u16 addr, const u8 clr, const u8 set)
+{
+	io_write8(addr, (io_read8(addr) & ~clr) | set);
+}
+
+#define io_setbits32(addr, set)	io_clrsetbits32(addr, 0, set)
+#define io_setbits16(addr, set)	io_clrsetbits16(addr, 0, set)
+#define io_setbits8(addr, set)	io_clrsetbits8(addr, 0, set)
+
+#define io_clrbits32(addr, clr)	io_clrsetbits32(addr, clr, 0)
+#define io_clrbits16(addr, clr)	io_clrsetbits16(addr, clr, 0)
+#define io_clrbits8(addr, clr)	io_clrsetbits8(addr, clr, 0)
+
+#endif