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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 10:05:51 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 10:05:51 +0000
commit5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 (patch)
treea94efe259b9009378be6d90eb30d2b019d95c194 /arch/x86/include/asm/processor-cyrix.h
parentInitial commit. (diff)
downloadlinux-5d1646d90e1f2cceb9f0828f4b28318cd0ec7744.tar.xz
linux-5d1646d90e1f2cceb9f0828f4b28318cd0ec7744.zip
Adding upstream version 5.10.209.upstream/5.10.209
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/x86/include/asm/processor-cyrix.h')
-rw-r--r--arch/x86/include/asm/processor-cyrix.h18
1 files changed, 18 insertions, 0 deletions
diff --git a/arch/x86/include/asm/processor-cyrix.h b/arch/x86/include/asm/processor-cyrix.h
new file mode 100644
index 000000000..df700a6cc
--- /dev/null
+++ b/arch/x86/include/asm/processor-cyrix.h
@@ -0,0 +1,18 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * NSC/Cyrix CPU indexed register access. Must be inlined instead of
+ * macros to ensure correct access ordering
+ * Access order is always 0x22 (=offset), 0x23 (=value)
+ */
+
+static inline u8 getCx86(u8 reg)
+{
+ outb(reg, 0x22);
+ return inb(0x23);
+}
+
+static inline void setCx86(u8 reg, u8 data)
+{
+ outb(reg, 0x22);
+ outb(data, 0x23);
+}