/*
 * Copyright (C) 2018 Intel Corporation. All rights reserved.
 *
 * SPDX-License-Identifier: BSD-3-Clause
 */

#ifndef VM_CONFIG_H_
#define VM_CONFIG_H_

#include <types.h>
#include <pci.h>
#include <boot.h>
#include <acrn_common.h>
#include <vm_configurations.h>
#include <sgx.h>

#define CONFIG_MAX_VM_NUM	(PRE_VM_NUM + SOS_VM_NUM + MAX_POST_VM_NUM)

#define AFFINITY_CPU(n)		(1U << (n))
#define MAX_VCPUS_PER_VM	MAX_PCPU_NUM
#define MAX_VUART_NUM_PER_VM	2U
#define MAX_VM_OS_NAME_LEN	32U
#define MAX_MOD_TAG_LEN		32U

#define PCI_DEV_TYPE_PTDEV	(1U << 0U)
#define PCI_DEV_TYPE_HVEMUL	(1U << 1U)
#define PCI_DEV_TYPE_SOSEMUL	(1U << 2U)

#define	RTVM_UUID1	{0x49U, 0x5aU, 0xe2U, 0xe5U, 0x26U, 0x03U, 0x4dU, 0x64U,	\
			 0xafU, 0x76U, 0xd4U, 0xbcU, 0x5aU, 0x8eU, 0xc0U, 0xe5U}

#define	SAFETY_VM_UUID1	{0xfcU, 0x83U, 0x69U, 0x01U, 0x86U, 0x85U, 0x4bU, 0xc0U,	\
			 0x8bU, 0x71U, 0x6eU, 0x31U, 0xdcU, 0x36U, 0xfaU, 0x47U}

/*
 * PRE_LAUNCHED_VM is launched by ACRN hypervisor, with LAPIC_PT;
 * SOS_VM is launched by ACRN hypervisor, without LAPIC_PT;
 * POST_LAUNCHED_VM is launched by ACRN devicemodel, with/without LAPIC_PT depends on usecases.
 */
enum acrn_vm_load_order {
	PRE_LAUNCHED_VM = 0,
	SOS_VM,
	POST_LAUNCHED_VM,	/* Launched by Devicemodel in SOS_VM */
	MAX_LOAD_ORDER
};

/* ACRN guest severity */
enum acrn_vm_severity {
	SEVERITY_SAFETY_VM = 0x40U,
	SEVERITY_RTVM = 0x30U,
	SEVERITY_SOS = 0x20U,
	SEVERITY_STANDARD_VM = 0x10U,
};

struct acrn_vm_mem_config {
	uint64_t start_hpa;	/* the start HPA of VM memory configuration, for pre-launched VMs only */
	uint64_t size;		/* VM memory size configuration */
	uint64_t start_hpa2;	/* Start of second HPA for non-contiguous allocations in VM memory configuration,
				   for pre-launched VMs only */
	uint64_t size_hpa2;	/* Size of second HPA for non-contiguous allocations in VM memory configuration */
};

struct target_vuart {
	uint8_t vm_id;		/* target VM id */
	uint8_t vuart_id;	/* target vuart index in a VM */
};

enum vuart_type {
	VUART_LEGACY_PIO = 0,	/* legacy PIO vuart */
	VUART_PCI,		/* PCI vuart, may removed */
};

union vuart_addr {
	uint16_t port_base;		/* addr for legacy type */
	struct {			/* addr for pci type */
		uint8_t f : 3;		/* BITs 0-2 */
		uint8_t d : 5;		/* BITs 3-7 */
		uint8_t b;		/* BITs 8-15 */
	} bdf;
};

struct vuart_config {
	enum vuart_type type;		/* legacy PIO or PCI  */
	union vuart_addr addr;		/* port addr if in legacy type, or bdf addr if in pci type */
	uint16_t irq;
	struct target_vuart t_vuart;	/* target vuart */
} __aligned(8);

enum os_kernel_type {
	KERNEL_BZIMAGE = 1,
	KERNEL_ZEPHYR,
};

struct acrn_vm_os_config {
	char name[MAX_VM_OS_NAME_LEN];			/* OS name, useful for debug */
	enum os_kernel_type kernel_type;		/* used for kernel specifc loading method */
	char kernel_mod_tag[MAX_MOD_TAG_LEN];		/* multiboot module tag for kernel */
	char ramdisk_mod_tag[MAX_MOD_TAG_LEN];		/* multiboot module tag for ramdisk */
	char bootargs[MAX_BOOTARGS_SIZE];		/* boot args/cmdline */
	uint64_t kernel_load_addr;
	uint64_t kernel_entry_addr;
	uint64_t kernel_ramdisk_addr;
} __aligned(8);

struct acrn_vm_pci_dev_config {
	uint32_t emu_type;				/* the type how the device is emulated. */
	union pci_bdf vbdf;				/* virtual BDF of PCI device */
	union pci_bdf pbdf;				/* physical BDF of PCI device */
	uint64_t vbar_base[PCI_BAR_COUNT];		/* vbar base address of PCI device */
	struct pci_pdev *pdev;				/* the physical PCI device if it's a PT device */
	const struct pci_vdev_ops *vdev_ops;		/* operations for PCI CFG read/write */
} __aligned(8);

struct acrn_vm_config {
	enum acrn_vm_load_order load_order;		/* specify the load order of VM */
	char name[MAX_VM_OS_NAME_LEN];			/* VM name identifier, useful for debug. */
	const uint8_t uuid[16];				/* UUID of the VM */
	uint16_t vcpu_num;				/* Number of vCPUs for the VM */
	uint8_t severity;				/* severity of the VM */

	uint64_t vcpu_affinity[MAX_VCPUS_PER_VM];/* bitmaps for vCPUs' affinity */
	uint64_t guest_flags;				/* VM flags that we want to configure for guest
							 * Now we have two flags:
							 *	GUEST_FLAG_SECURE_WORLD_ENABLED
							 *	GUEST_FLAG_LAPIC_PASSTHROUGH
							 * We could add more guest flags in future;
							 */
	struct acrn_vm_mem_config memory;		/* memory configuration of VM */
	struct epc_section epc;				/* EPC memory configuration of VM */
	uint16_t pci_dev_num;				/* indicate how many PCI devices in VM */
	struct acrn_vm_pci_dev_config *pci_devs;	/* point to PCI devices BDF list */
	struct acrn_vm_os_config os_config;		/* OS information the VM */
	uint16_t clos;					/* Class of Service, effective only if CONFIG_CAT_ENABLED
							 * is defined on CAT capable platforms
							 */

	struct vuart_config vuart[MAX_VUART_NUM_PER_VM];/* vuart configuration for VM */
} __aligned(8);

struct acrn_vm_config *get_vm_config(uint16_t vm_id);
uint8_t get_vm_severity(uint16_t vm_id);
bool vm_has_matched_uuid(uint16_t vmid, const uint8_t *uuid);
bool sanitize_vm_config(void);

extern struct acrn_vm_config vm_configs[CONFIG_MAX_VM_NUM];

#endif /* VM_CONFIG_H_ */