1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2012 NetApp, Inc. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY NETAPP, INC ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL NETAPP, INC OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 * 28 * $FreeBSD$ 29 */ 30 31 #ifndef _MEM_H_ 32 #define _MEM_H_ 33 34 #include <sys/linker_set.h> 35 36 struct vmctx; 37 38 typedef int (*mem_func_t)(struct vmctx *ctx, int vcpu, int dir, uint64_t addr, 39 int size, uint64_t *val, void *arg1, long arg2); 40 41 struct mem_range { 42 const char *name; 43 int flags; 44 mem_func_t handler; 45 void *arg1; 46 long arg2; 47 uint64_t base; 48 uint64_t size; 49 }; 50 #define MEM_F_READ 0x1 51 #define MEM_F_WRITE 0x2 52 #define MEM_F_RW 0x3 53 #define MEM_F_IMMUTABLE 0x4 /* mem_range cannot be unregistered */ 54 55 void init_mem(void); 56 int emulate_mem(struct vmctx *, int vcpu, uint64_t paddr, struct vie *vie, 57 struct vm_guest_paging *paging); 58 59 int read_mem(struct vmctx *ctx, int vcpu, uint64_t gpa, uint64_t *rval, 60 int size); 61 int register_mem(struct mem_range *memp); 62 int register_mem_fallback(struct mem_range *memp); 63 int unregister_mem(struct mem_range *memp); 64 65 #endif /* _MEM_H_ */ 66