From 383c203d77404b4f74723d7a89be691744f41c25 Mon Sep 17 00:00:00 2001
From: Tianhao Wang <shrik3@riseup.net>
Date: Tue, 14 Mar 2023 10:47:25 +0100
Subject: add delay between IOs

---
 src/arch/x86_64/misc.rs | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)
 create mode 100644 src/arch/x86_64/misc.rs

(limited to 'src/arch/x86_64/misc.rs')

diff --git a/src/arch/x86_64/misc.rs b/src/arch/x86_64/misc.rs
new file mode 100644
index 0000000..c007d99
--- /dev/null
+++ b/src/arch/x86_64/misc.rs
@@ -0,0 +1,17 @@
+// wrappers for misc. architectural code
+// before they find better place to go.
+// asm code goes to asm/misc.s
+
+extern "C" {
+    fn _delay();
+}
+
+#[inline(always)]
+
+// delays for several cycles. Used to fill sequantial IO commands
+// (for devices to react)
+pub fn delay() {
+    unsafe {
+        _delay();
+    }                
+}
-- 
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