inc/hf/spci_internal.h

/*
 * Copyright 2019 The Hafnium Authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#pragma once

#include "hf/addr.h"
#include "hf/vm.h"

#include "vmapi/hf/spci.h"

#define SPCI_VERSION_MAJOR 0x0
#define SPCI_VERSION_MINOR 0x9

#define SPCI_VERSION_MAJOR_OFFSET 16

struct spci_mem_transitions {
	int orig_from_mode;
	int orig_to_mode;
	int from_mode;
	int to_mode;
};

spci_return_t spci_msg_handle_architected_message(
	struct vm_locked to_locked, struct vm_locked from_locked,
	const struct spci_architected_message_header
		*architected_message_replica,
	struct spci_message *from_msg_replica, struct spci_message *to_msg);

bool spci_msg_check_transition(struct vm *to, struct vm *from,
			       enum spci_memory_share share,
			       int *orig_from_mode, ipaddr_t begin,
			       ipaddr_t end, uint32_t memory_to_attributes,
			       int *from_mode, int *to_mode);