2 * Copyright (c) 2011 NetApp, Inc.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY NETAPP, INC ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL NETAPP, INC OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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29 #include <sys/cdefs.h>
30 __FBSDID("$FreeBSD$");
32 #include <sys/types.h>
37 * EISA interrupt Level Control Register.
39 * This is a 16-bit register with one bit for each of the IRQ0 through IRQ15.
40 * A level triggered irq is indicated by setting the corresponding bit to '1'.
42 #define ELCR_PORT 0x4d0
44 static uint8_t elcr[2] = { 0x00, 0x00 };
47 elcr_handler(struct vmctx *ctx, int vcpu, int in, int port, int bytes,
48 uint32_t *eax, void *arg)
55 idx = port - ELCR_PORT;
64 INOUT_PORT(elcr, ELCR_PORT + 0, IOPORT_F_INOUT, elcr_handler);
65 INOUT_PORT(elcr, ELCR_PORT + 1, IOPORT_F_INOUT, elcr_handler);