atkbdc.c revision 285830
1/*- 2 * Copyright (c) 2014 Tycho Nightingale <tycho.nightingale@pluribusnetworks.com> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 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. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 THE AUTHOR 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) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27#include <sys/cdefs.h> 28__FBSDID("$FreeBSD: releng/10.2/usr.sbin/bhyve/atkbdc.c 270159 2014-08-19 01:20:24Z grehan $"); 29 30#include <sys/types.h> 31 32#include <machine/vmm.h> 33 34#include <vmmapi.h> 35 36#include <assert.h> 37#include <errno.h> 38#include <stdio.h> 39 40#include "inout.h" 41#include "pci_lpc.h" 42 43#define KBD_DATA_PORT 0x60 44 45#define KBD_STS_CTL_PORT 0x64 46#define KBD_SYS_FLAG 0x4 47 48#define KBDC_RESET 0xfe 49 50static int 51atkbdc_data_handler(struct vmctx *ctx, int vcpu, int in, int port, int bytes, 52 uint32_t *eax, void *arg) 53{ 54 if (bytes != 1) 55 return (-1); 56 57 *eax = 0; 58 59 return (0); 60} 61 62static int 63atkbdc_sts_ctl_handler(struct vmctx *ctx, int vcpu, int in, int port, 64 int bytes, uint32_t *eax, void *arg) 65{ 66 int error, retval; 67 68 if (bytes != 1) 69 return (-1); 70 71 retval = 0; 72 if (in) { 73 *eax = KBD_SYS_FLAG; /* system passed POST */ 74 } else { 75 switch (*eax) { 76 case KBDC_RESET: /* Pulse "reset" line. */ 77 error = vm_suspend(ctx, VM_SUSPEND_RESET); 78 assert(error == 0 || errno == EALREADY); 79 break; 80 } 81 } 82 83 return (retval); 84} 85 86INOUT_PORT(atkdbc, KBD_DATA_PORT, IOPORT_F_INOUT, atkbdc_data_handler); 87SYSRES_IO(KBD_DATA_PORT, 1); 88INOUT_PORT(atkbdc, KBD_STS_CTL_PORT, IOPORT_F_INOUT, 89 atkbdc_sts_ctl_handler); 90SYSRES_IO(KBD_STS_CTL_PORT, 1); 91