[apple/xnu.git] / osfmk / i386 / vmx / vmx_asm.h

/*
 * Copyright (c) 2006 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
 * 
 * This file contains Original Code and/or Modifications of Original Code
 * as defined in and that are subject to the Apple Public Source License
 * Version 2.0 (the 'License'). You may not use this file except in
 * compliance with the License. The rights granted to you under the License
 * may not be used to create, or enable the creation or redistribution of,
 * unlawful or unlicensed copies of an Apple operating system, or to
 * circumvent, violate, or enable the circumvention or violation of, any
 * terms of an Apple operating system software license agreement.
 * 
 * Please obtain a copy of the License at
 * http://www.opensource.apple.com/apsl/ and read it before using this file.
 * 
 * The Original Code and all software distributed under the License are
 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
 * Please see the License for the specific language governing rights and
 * limitations under the License.
 * 
 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
 */
 
#ifndef _I386_VMX_ASM_H_
#define _I386_VMX_ASM_H_
 
#include <mach/machine/vm_types.h>
#include <mach/boolean.h>
#include <kern/assert.h>
#include <i386/eflags.h>
#include <i386/seg.h>

#ifndef DEBUG
#include <debug.h>
#endif

#define VMX_FAIL_INVALID	-1
#define VMX_FAIL_VALID		-2
#define VMX_SUCCEED			0

static inline void enter_64bit_mode(void) {
	__asm__ __volatile__ (
		".byte   0xea    /* far jump longmode */	\n\t"
		".long   1f					\n\t"
		".word   %P0					\n\t"
		".code64					\n\t"
		"1:"
		:: "i" (KERNEL64_CS)
	);
}
static inline void enter_compat_mode(void) {
	asm(
		"ljmp    *4f					\n\t"
	"4:							\n\t"
		".long   5f					\n\t"
		".word   %P0					\n\t"
		".code32					\n\t"
	"5:"
		:: "i" (KERNEL_CS)
	);
}

#define __VMXOFF(res)						\
	__asm__ __volatile__ (					\
		"vmxoff		\n\t"				\
		"cmovcl %2, %0	\n\t"	/* CF = 1, ZF = 0 */	\
		"cmovzl %3, %0"		/* CF = 0, ZF = 1 */	\
		: "=&r" (res)				\
		: "0" (VMX_SUCCEED),				\
		  "r" (VMX_FAIL_INVALID),			\
		  "r" (VMX_FAIL_VALID)				\
		: "memory", "cc"				\
	)

#define __VMXON(addr, res)					\
	__asm__ __volatile__ (					\
		"vmxon %4	\n\t"				\
		"cmovcl %2, %0	\n\t"	/* CF = 1, ZF = 0 */	\
		"cmovzl %3, %0"		/* CF = 0, ZF = 1 */	\
		: "=&r" (res)					\
		: "0" (VMX_SUCCEED),				\
		  "r" (VMX_FAIL_INVALID),			\
		  "r" (VMX_FAIL_VALID),				\
		  "m" (*addr)					\
		: "memory", "cc"				\
	);


/*
 *	__vmxoff -- Leave VMX Operation
 *
 */
static inline int
__vmxoff(void)
{
	int result;
	if (ml_is64bit()) {
		/* don't put anything between these lines! */
		enter_64bit_mode();
		__VMXOFF(result);
		enter_compat_mode();
	} else {
		__VMXOFF(result);
	}
	return result;
}

/*
 *	__vmxon -- Enter VMX Operation
 *
 */
 static inline int
__vmxon(addr64_t *v)
 {
	int result;
	if (ml_is64bit()) {
		/* don't put anything between these lines! */
		enter_64bit_mode();
		__VMXON(v, result);
		enter_compat_mode();
	} else {
		__VMXON(v, result);
	}
	return result;
}

/*
 * VMX Capability Registers (VCR)
 *
 */
#define VMX_VCR_VMCS_MEM_TYPE_BIT	50
#define VMX_VCR_VMCS_MEM_TYPE_MASK	0xF

#define VMX_VCR_VMCS_SIZE_BIT		32
#define VMX_VCR_VMCS_SIZE_MASK		0x01FFF
#define VMX_VCR_VMCS_REV_ID		0x00000000FFFFFFFFLL

#define VMX_VCR_ACT_HLT_BIT		6
#define VMX_VCR_ACT_HLT_MASK		0x1
#define VMX_VCR_ACT_SHUTDOWN_BIT	7
#define VMX_VCR_ACT_SHUTDOWN_MASK	0x1
#define VMX_VCR_ACT_SIPI_BIT		8
#define VMX_VCR_ACT_SIPI_MASK		0x1
#define VMX_VCR_ACT_CSTATE_BIT		9
#define VMX_VCR_ACT_CSTATE_MASK		0x1
#define VMX_VCR_CR3_TARGS_BIT		16
#define VMX_VCR_CR3_TARGS_MASK		0xFF
#define VMX_VCR_MAX_MSRS_BIT		25
#define VMX_VCR_MAX_MSRS_MASK		0x7
#define VMX_VCR_MSEG_ID_BIT		32
#define VMX_VCR_MSEG_ID_MASK		0xFFFFFFFF

#endif	/* _I386_VMX_H_ */
Commit	Line	Data
2d21ac55 A	1	/*
	2	* Copyright (c) 2006 Apple Computer, Inc. All rights reserved.
	3	*
	4	* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
	5	*
	6	* This file contains Original Code and/or Modifications of Original Code
	7	* as defined in and that are subject to the Apple Public Source License
	8	* Version 2.0 (the 'License'). You may not use this file except in
	9	* compliance with the License. The rights granted to you under the License
	10	* may not be used to create, or enable the creation or redistribution of,
	11	* unlawful or unlicensed copies of an Apple operating system, or to
	12	* circumvent, violate, or enable the circumvention or violation of, any
	13	* terms of an Apple operating system software license agreement.
	14	*
	15	* Please obtain a copy of the License at
	16	* http://www.opensource.apple.com/apsl/ and read it before using this file.
	17	*
	18	* The Original Code and all software distributed under the License are
	19	* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
	20	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
	21	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
	22	* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
	23	* Please see the License for the specific language governing rights and
	24	* limitations under the License.
	25	*
	26	* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
	27	*/
	28
	29	#ifndef _I386_VMX_ASM_H_
	30	#define _I386_VMX_ASM_H_
	31
	32	#include <mach/machine/vm_types.h>
	33	#include <mach/boolean.h>
	34	#include <kern/assert.h>
	35	#include <i386/eflags.h>
	36	#include <i386/seg.h>
	37
	38	#ifndef DEBUG
	39	#include <debug.h>
	40	#endif
	41
	42	#define VMX_FAIL_INVALID -1
	43	#define VMX_FAIL_VALID -2
	44	#define VMX_SUCCEED 0
	45
	46	static inline void enter_64bit_mode(void) {
	47	__asm__ __volatile__ (
	48	".byte 0xea /* far jump longmode */ \n\t"
	49	".long 1f \n\t"
	50	".word %P0 \n\t"
	51	".code64 \n\t"
	52	"1:"
	53	:: "i" (KERNEL64_CS)
	54	);
	55	}
	56	static inline void enter_compat_mode(void) {
	57	asm(
	58	"ljmp *4f \n\t"
	59	"4: \n\t"
	60	".long 5f \n\t"
	61	".word %P0 \n\t"
	62	".code32 \n\t"
	63	"5:"
	64	:: "i" (KERNEL_CS)
65	);
66	}
67
68	#define __VMXOFF(res) \
69	__asm__ __volatile__ ( \
70	"vmxoff \n\t" \
71	"cmovcl %2, %0 \n\t" /* CF = 1, ZF = 0 */ \
72	"cmovzl %3, %0" /* CF = 0, ZF = 1 */ \
73	: "=&r" (res) \
74	: "0" (VMX_SUCCEED), \
75	"r" (VMX_FAIL_INVALID), \
76	"r" (VMX_FAIL_VALID) \
77	: "memory", "cc" \
78	)
79
80	#define __VMXON(addr, res) \
81	__asm__ __volatile__ ( \
82	"vmxon %4 \n\t" \
83	"cmovcl %2, %0 \n\t" /* CF = 1, ZF = 0 */ \
84	"cmovzl %3, %0" /* CF = 0, ZF = 1 */ \
85	: "=&r" (res) \
86	: "0" (VMX_SUCCEED), \
87	"r" (VMX_FAIL_INVALID), \
88	"r" (VMX_FAIL_VALID), \
89	"m" (*addr) \
90	: "memory", "cc" \
91	);
92
93
94	/*
95	* __vmxoff -- Leave VMX Operation
96	*
97	*/
98	static inline int
99	__vmxoff(void)
100	{
101	int result;
102	if (ml_is64bit()) {
103	/* don't put anything between these lines! */
104	enter_64bit_mode();
105	__VMXOFF(result);
106	enter_compat_mode();
107	} else {
108	__VMXOFF(result);
109	}
110	return result;
111	}
112
113	/*
114	* __vmxon -- Enter VMX Operation
115	*
116	*/
117	static inline int
118	__vmxon(addr64_t *v)
119	{
120	int result;
121	if (ml_is64bit()) {
122	/* don't put anything between these lines! */
123	enter_64bit_mode();
124	__VMXON(v, result);
125	enter_compat_mode();
126	} else {
127	__VMXON(v, result);
128	}
129	return result;
130	}
131
132	/*
133	* VMX Capability Registers (VCR)
134	*
135	*/
136	#define VMX_VCR_VMCS_MEM_TYPE_BIT 50
137	#define VMX_VCR_VMCS_MEM_TYPE_MASK 0xF
138
139	#define VMX_VCR_VMCS_SIZE_BIT 32
140	#define VMX_VCR_VMCS_SIZE_MASK 0x01FFF
141	#define VMX_VCR_VMCS_REV_ID 0x00000000FFFFFFFFLL
142
143	#define VMX_VCR_ACT_HLT_BIT 6
144	#define VMX_VCR_ACT_HLT_MASK 0x1
145	#define VMX_VCR_ACT_SHUTDOWN_BIT 7
146	#define VMX_VCR_ACT_SHUTDOWN_MASK 0x1
147	#define VMX_VCR_ACT_SIPI_BIT 8
148	#define VMX_VCR_ACT_SIPI_MASK 0x1
149	#define VMX_VCR_ACT_CSTATE_BIT 9
150	#define VMX_VCR_ACT_CSTATE_MASK 0x1
151	#define VMX_VCR_CR3_TARGS_BIT 16
152	#define VMX_VCR_CR3_TARGS_MASK 0xFF
153	#define VMX_VCR_MAX_MSRS_BIT 25
154	#define VMX_VCR_MAX_MSRS_MASK 0x7
155	#define VMX_VCR_MSEG_ID_BIT 32
156	#define VMX_VCR_MSEG_ID_MASK 0xFFFFFFFF
157
158	#endif /* _I386_VMX_H_ */