From 486544161fa97accff12c2fc585ffe218b8dfc52 Mon Sep 17 00:00:00 2001 From: Oleksandr Andrushchenko Date: Thu, 6 Aug 2020 12:42:48 +0300 Subject: xen: Port Xen hypervisor related code from mini-os Port hypervisor related code from Mini-OS. This is referencing the code of Mini-OS from [1] by Huang Shijie and Volodymyr Babchuk which is for ARM64. Update essential arch code to support required bit operations, memory barriers etc. Copyright for the bits ported belong to at least the following authors, please see related files for details: Copyright (c) 2002-2003, K A Fraser Copyright (c) 2005, Grzegorz Milos, gm281@cam.ac.uk,Intel Research Cambridge Copyright (c) 2014, Karim Allah Ahmed [1] - https://github.com/zyzii/mini-os.git Signed-off-by: Oleksandr Andrushchenko Signed-off-by: Anastasiia Lukianenko [trini: Drop wmb() from musb-net/linux-compat.h now] Signed-off-by: Tom Rini --- include/xen.h | 15 +++++++++++++++ include/xen/hvm.h | 27 +++++++++++++++++++++++++++ 2 files changed, 42 insertions(+) create mode 100644 include/xen.h create mode 100644 include/xen/hvm.h (limited to 'include') diff --git a/include/xen.h b/include/xen.h new file mode 100644 index 00000000000..abc3546dd2b --- /dev/null +++ b/include/xen.h @@ -0,0 +1,15 @@ +/* SPDX-License-Identifier: GPL-2.0 + * + * (C) 2020, EPAM Systems Inc. + */ +#ifndef __XEN_H__ +#define __XEN_H__ + +/** + * xen_init() - Xen initialization + * + * Map Xen memory pages. + */ +void xen_init(void); + +#endif /* __XEN_H__ */ diff --git a/include/xen/hvm.h b/include/xen/hvm.h new file mode 100644 index 00000000000..f02c0798a6f --- /dev/null +++ b/include/xen/hvm.h @@ -0,0 +1,27 @@ +/* SPDX-License-Identifier: GPL-2.0 + * + * Simple wrappers around HVM functions + * + * Copyright (c) 2002-2003, K A Fraser + * Copyright (c) 2005, Grzegorz Milos, gm281@cam.ac.uk,Intel Research Cambridge + * Copyright (c) 2020, EPAM Systems Inc. + */ +#ifndef XEN_HVM_H__ +#define XEN_HVM_H__ + +#include +#include +#include + +extern struct shared_info *HYPERVISOR_shared_info; + +int hvm_get_parameter(int idx, uint64_t *value); +int hvm_get_parameter_maintain_dcache(int idx, uint64_t *value); + +struct shared_info *map_shared_info(void *p); +void do_hypervisor_callback(struct pt_regs *regs); +void mask_evtchn(uint32_t port); +void unmask_evtchn(uint32_t port); +void clear_evtchn(uint32_t port); + +#endif /* XEN_HVM_H__ */ -- cgit v1.2.3