vmm_ioport.c (264631) | vmm_ioport.c (264648) |
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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> | 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> --- 17 unchanged lines hidden (view full) --- 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> --- 17 unchanged lines hidden (view full) --- 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; |
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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} |