[Xen-devel] [PATCH mini-os enhancements for vtpm 1/8]

[Matthew Fioravante <matthew.fioravante@xxxxxxxxxx>]

This patch adds iowritexx() and ioreadxx() functions for interacting
with hardware memory to mini-os. The functions are available in a header
iorw.h

Signed off by Matthew Fioravante: matthew.fioravante@xxxxxxxxxx

diff --git a/extras/mini-os/arch/ia64/iorw.c
b/extras/mini-os/arch/ia64/iorw.c
--- /dev/null
+++ b/extras/mini-os/arch/ia64/iorw.c
@@ -0,0 +1,22 @@
+#include <mini-os/iorw.h>
+#include <mini-os/console.h>
+
+void iowrite8(volatile void* addr, uint8_t val)
+{
+   printk("iorw not implemented!!\n");
+}
+void iowrite32(volatile void* addr, uint32_t val)
+{
+   printk("iorw not implemented!!\n");
+}
+
+uint8_t ioread8(volatile void* addr)
+{
+   printk("iorw not implemented!!\n");
+   return 0;
+}
+uint32_t ioread32(volatile void* addr)
+{
+   printk("iorw not implemented!!\n");
+   return 0;
+}
diff --git a/extras/mini-os/arch/x86/iorw.c b/extras/mini-os/arch/x86/iorw.c
--- /dev/null
+++ b/extras/mini-os/arch/x86/iorw.c
@@ -0,0 +1,19 @@
+#include <mini-os/iorw.h>
+
+void iowrite8(volatile void* addr, uint8_t val)
+{
+   *((volatile uint8_t*)addr) = val;
+}
+void iowrite32(volatile void* addr, uint32_t val)
+{
+   *((volatile uint32_t*)addr) = val;
+}
+
+uint8_t ioread8(volatile void* addr)
+{
+   return *((volatile uint8_t*) addr);
+}
+uint32_t ioread32(volatile void* addr)
+{
+   return *((volatile uint32_t*) addr);
+}
diff --git a/extras/mini-os/include/iorw.h b/extras/mini-os/include/iorw.h
--- /dev/null
+++ b/extras/mini-os/include/iorw.h
@@ -0,0 +1,12 @@
+#ifndef MINIOS_IORW_H
+#define MINIOS_IORW_H
+
+#include <mini-os/types.h>
+
+void iowrite8(volatile void* addr, uint8_t val);
+void iowrite32(volatile void* addr, uint32_t val);
+
+uint8_t ioread8(volatile void* addr);
+uint32_t ioread32(volatile void* addr);
+
+#endif

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