[PATCH v4 18/30] xen/riscv: introduce time.h

[Oleksii Kurochko <oleksii.kurochko@xxxxxxxxx>]

Signed-off-by: Oleksii Kurochko <oleksii.kurochko@xxxxxxxxx>
Acked-by: Jan Beulich <jbeulich@xxxxxxxx>
---
Changes in V4:
 - s/BUG()/BUG_ON("unimplemented")
---
Changes in V3:
 - Acked-by: Jan Beulich <jbeulich@xxxxxxxx>
 - add SPDX
 - Add new line
---
Changes in V2:
 - change xen/lib.h to xen/bug.h
 - remove inclusion of <asm/processor.h> as it's not needed.
---
 xen/arch/riscv/include/asm/time.h | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)
 create mode 100644 xen/arch/riscv/include/asm/time.h

diff --git a/xen/arch/riscv/include/asm/time.h 
b/xen/arch/riscv/include/asm/time.h
new file mode 100644
index 0000000000..2e359fa046
--- /dev/null
+++ b/xen/arch/riscv/include/asm/time.h
@@ -0,0 +1,29 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+#ifndef __ASM_RISCV_TIME_H__
+#define __ASM_RISCV_TIME_H__
+
+#include <xen/bug.h>
+#include <asm/csr.h>
+
+struct vcpu;
+
+/* TODO: implement */
+static inline void force_update_vcpu_system_time(struct vcpu *v) { 
BUG_ON("unimplemented"); }
+
+typedef unsigned long cycles_t;
+
+static inline cycles_t get_cycles(void)
+{
+       return csr_read(CSR_TIME);
+}
+
+#endif /* __ASM_RISCV_TIME_H__ */
+
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
-- 
2.43.0