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vmm_ioport.c (264631) vmm_ioport.c (264648)
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

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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>
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

--- 11 unchanged lines hidden (view full) ---

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: head/sys/amd64/vmm/vmm_ioport.c 264631 2014-04-18 00:02:06Z tychon $");
28__FBSDID("$FreeBSD: head/sys/amd64/vmm/vmm_ioport.c 264648 2014-04-18 15:22:56Z tychon $");
29
30#include <sys/param.h>
31#include <sys/types.h>
32#include <sys/queue.h>
33#include <sys/cpuset.h>
34#include <sys/systm.h>
35
36#include <machine/vmm.h>

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54 [IO_ELCR1] = vatpic_elc_handler,
55 [IO_ELCR2] = vatpic_elc_handler,
56};
57
58int
59emulate_ioport(struct vm *vm, int vcpuid, struct vm_exit *vmexit)
60{
61 ioport_handler_func_t handler;
29
30#include <sys/param.h>
31#include <sys/types.h>
32#include <sys/queue.h>
33#include <sys/cpuset.h>
34#include <sys/systm.h>
35
36#include <machine/vmm.h>

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54 [IO_ELCR1] = vatpic_elc_handler,
55 [IO_ELCR2] = vatpic_elc_handler,
56};
57
58int
59emulate_ioport(struct vm *vm, int vcpuid, struct vm_exit *vmexit)
60{
61 ioport_handler_func_t handler;
62 uint32_t mask, val;
63 int error;
62
63 if (vmexit->u.inout.port >= MAX_IOPORTS)
64 return (-1);
65
66 handler = ioport_handler[vmexit->u.inout.port];
67 if (handler == NULL)
68 return (-1);
69
64
65 if (vmexit->u.inout.port >= MAX_IOPORTS)
66 return (-1);
67
68 handler = ioport_handler[vmexit->u.inout.port];
69 if (handler == NULL)
70 return (-1);
71
70 return ((*handler)(vm, vcpuid, vmexit));
72 if (!vmexit->u.inout.in) {
73 switch (vmexit->u.inout.bytes) {
74 case 1:
75 mask = 0xff;
76 break;
77 case 2:
78 mask = 0xffff;
79 break;
80 default:
81 mask = 0xffffffff;
82 break;
83 }
84 val = vmexit->u.inout.eax & mask;
85 }
86
87 error = (*handler)(vm, vcpuid, vmexit->u.inout.in,
88 vmexit->u.inout.port, vmexit->u.inout.bytes, &val);
89
90 if (!error && vmexit->u.inout.in) {
91 switch (vmexit->u.inout.bytes) {
92 case 1:
93 mask = 0xff;
94 break;
95 case 2:
96 mask = 0xffff;
97 break;
98 default:
99 mask = 0xffffffff;
100 break;
101 }
102 vmexit->u.inout.eax &= ~mask;
103 vmexit->u.inout.eax |= val & mask;
104 }
105
106 return (error);
71}
107}