Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / ipxe / src / include / ipxe / timer.h

diff --git a/qemu/roms/ipxe/src/include/ipxe/timer.h b/qemu/roms/ipxe/src/include/ipxe/timer.h
new file mode 100644 (file)
index 0000000..d030965
--- /dev/null
+++ b/qemu/roms/ipxe/src/include/ipxe/timer.h
@@ -0,0 +1,77 @@
+#ifndef        _IPXE_TIMER_H
+#define _IPXE_TIMER_H
+
+/** @file
+ *
+ * iPXE timer API
+ *
+ * The timer API provides udelay() for fixed delays, and currticks()
+ * for a monotonically increasing tick counter.
+ */
+
+FILE_LICENCE ( GPL2_OR_LATER );
+
+#include <ipxe/api.h>
+#include <config/timer.h>
+
+/**
+ * Calculate static inline timer API function name
+ *
+ * @v _prefix          Subsystem prefix
+ * @v _api_func                API function
+ * @ret _subsys_func   Subsystem API function
+ */
+#define TIMER_INLINE( _subsys, _api_func ) \
+       SINGLE_API_INLINE ( TIMER_PREFIX_ ## _subsys, _api_func )
+
+/**
+ * Provide a timer API implementation
+ *
+ * @v _prefix          Subsystem prefix
+ * @v _api_func                API function
+ * @v _func            Implementing function
+ */
+#define PROVIDE_TIMER( _subsys, _api_func, _func ) \
+       PROVIDE_SINGLE_API ( TIMER_PREFIX_ ## _subsys, _api_func, _func )
+
+/**
+ * Provide a static inline timer API implementation
+ *
+ * @v _prefix          Subsystem prefix
+ * @v _api_func                API function
+ */
+#define PROVIDE_TIMER_INLINE( _subsys, _api_func ) \
+       PROVIDE_SINGLE_API_INLINE ( TIMER_PREFIX_ ## _subsys, _api_func )
+
+/* Include all architecture-independent I/O API headers */
+#include <ipxe/efi/efi_timer.h>
+#include <ipxe/linux/linux_timer.h>
+
+/* Include all architecture-dependent I/O API headers */
+#include <bits/timer.h>
+
+/**
+ * Delay for a fixed number of microseconds
+ *
+ * @v usecs            Number of microseconds for which to delay
+ */
+void udelay ( unsigned long usecs );
+
+/**
+ * Get current system time in ticks
+ *
+ * @ret ticks          Current time, in ticks
+ */
+unsigned long currticks ( void );
+
+/**
+ * Get number of ticks per second
+ *
+ * @ret ticks_per_sec  Number of ticks per second
+ */
+unsigned long ticks_per_sec ( void );
+
+/** Number of ticks per second */
+#define TICKS_PER_SEC ( ticks_per_sec() )
+
+#endif /* _IPXE_TIMER_H */