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/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2014 Tycho Nightingale <tycho.nightingale@pluribusnetworks.com>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
/*
* 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.
*
* Copyright 2020 Oxide Computer Company
*/
#ifndef _VMM_IOPORT_H_
#define _VMM_IOPORT_H_
#include <sys/vmm_kernel.h>
struct ioport_entry {
ioport_handler_t iope_func;
void *iope_arg;
uint16_t iope_port;
uint16_t iope_flags;
uint32_t iope_pad;
};
typedef struct ioport_entry ioport_entry_t;
struct ioport_config {
struct ioport_entry *iop_entries;
uint_t iop_count;
};
#define IOPF_DEFAULT 0
#define IOPF_FIXED (1 << 0) /* system device fixed in position */
#define IOPF_DRV_HOOK (1 << 1) /* external driver hook */
void vm_inout_init(struct vm *vm, struct ioport_config *ports);
void vm_inout_cleanup(struct vm *vm, struct ioport_config *ports);
int vm_inout_attach(struct ioport_config *ports, uint16_t port, uint16_t flags,
ioport_handler_t func, void *arg);
int vm_inout_detach(struct ioport_config *ports, uint16_t port, bool drv_hook,
ioport_handler_t *old_func, void **old_arg);
int vm_inout_access(struct ioport_config *ports, bool in, uint16_t port,
uint8_t bytes, uint32_t *val);
/*
* Arbitrary cookie for io port hook:
* - top 48 bits: func address + arg
* - lower 16 bits: port
*/
#define IOP_GEN_COOKIE(func, arg, port) \
((uintptr_t)((((uintptr_t)(func) + (uintptr_t)(arg)) << 16) \
| (uint16_t)(port)))
#define IOP_PORT_FROM_COOKIE(cookie) (uint16_t)(cookie)
#endif /* _VMM_IOPORT_H_ */
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