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/*
* This file and its contents are supplied under the terms of the
* Common Development and Distribution License ("CDDL"), version 1.0.
* You may only use this file in accordance with the terms of version
* 1.0 of the CDDL.
*
* A full copy of the text of the CDDL should have accompanied this
* source. A copy of the CDDL is also available via the Internet at
* http://www.illumos.org/license/CDDL.
*/
/* This file is dual-licensed; see usr/src/contrib/bhyve/LICENSE */
/*
* Copyright 2019 Joyent, Inc.
* Copyright 2021 Oxide Computer Company
*/
#ifndef _VMM_DRV_H_
#define _VMM_DRV_H_
#ifdef _KERNEL
#include <sys/file.h>
#include <sys/stdbool.h>
struct vmm_hold;
typedef struct vmm_hold vmm_hold_t;
struct vmm_lease;
typedef struct vmm_lease vmm_lease_t;
/*
* This is effectively a synonym for the bhyve-internal 'struct vm_page' type.
* Use of `vmm_page_t *` instead allows us to keep those implementation details
* hidden from vmm_drv consumers.
*/
struct vmm_page;
typedef struct vmm_page vmm_page_t;
/*
* Because of tangled headers, this definitions mirrors its ioport_handler_t
* counterpart in vmm_kernel.h.
*/
typedef int (*vmm_drv_iop_cb_t)(void *, bool, uint16_t, uint8_t, uint32_t *);
extern int vmm_drv_hold(file_t *, cred_t *, vmm_hold_t **);
extern void vmm_drv_rele(vmm_hold_t *);
extern boolean_t vmm_drv_release_reqd(vmm_hold_t *);
extern vmm_lease_t *vmm_drv_lease_sign(vmm_hold_t *, boolean_t (*)(void *),
void *);
extern void vmm_drv_lease_break(vmm_hold_t *, vmm_lease_t *);
extern boolean_t vmm_drv_lease_expired(vmm_lease_t *);
extern vmm_page_t *vmm_drv_page_hold(vmm_lease_t *, uintptr_t, int);
extern void vmm_drv_page_release(vmm_page_t *);
extern void vmm_drv_page_release_chain(vmm_page_t *);
extern const void *vmm_drv_page_readable(const vmm_page_t *);
extern void *vmm_drv_page_writable(const vmm_page_t *);
extern void vmm_drv_page_chain(vmm_page_t *, vmm_page_t *);
extern vmm_page_t *vmm_drv_page_next(const vmm_page_t *);
extern int vmm_drv_msi(vmm_lease_t *, uint64_t, uint64_t);
extern int vmm_drv_ioport_hook(vmm_hold_t *, uint16_t, vmm_drv_iop_cb_t, void *,
void **);
extern void vmm_drv_ioport_unhook(vmm_hold_t *, void **);
#endif /* _KERNEL */
#endif /* _VMM_DRV_H_ */
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