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Restructure the VMX code to enter and exit the guest. In large part this change
[FreeBSD/FreeBSD.git] / sys / amd64 / include / vmm.h
1 /*-
2  * Copyright (c) 2011 NetApp, Inc.
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 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)
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  * $FreeBSD$
27  */
28
29 #ifndef _VMM_H_
30 #define _VMM_H_
31
32 #ifdef _KERNEL
33
34 #define VM_MAX_NAMELEN  32
35
36 struct vm;
37 struct vm_memory_segment;
38 struct seg_desc;
39 struct vm_exit;
40 struct vm_run;
41 struct vhpet;
42 struct vioapic;
43 struct vlapic;
44 struct vmspace;
45 struct vm_object;
46 struct pmap;
47
48 enum x2apic_state;
49
50 typedef int     (*vmm_init_func_t)(void);
51 typedef int     (*vmm_cleanup_func_t)(void);
52 typedef void    (*vmm_resume_func_t)(void);
53 typedef void *  (*vmi_init_func_t)(struct vm *vm, struct pmap *pmap);
54 typedef int     (*vmi_run_func_t)(void *vmi, int vcpu, register_t rip,
55                                   struct pmap *pmap);
56 typedef void    (*vmi_cleanup_func_t)(void *vmi);
57 typedef int     (*vmi_get_register_t)(void *vmi, int vcpu, int num,
58                                       uint64_t *retval);
59 typedef int     (*vmi_set_register_t)(void *vmi, int vcpu, int num,
60                                       uint64_t val);
61 typedef int     (*vmi_get_desc_t)(void *vmi, int vcpu, int num,
62                                   struct seg_desc *desc);
63 typedef int     (*vmi_set_desc_t)(void *vmi, int vcpu, int num,
64                                   struct seg_desc *desc);
65 typedef int     (*vmi_inject_event_t)(void *vmi, int vcpu,
66                                       int type, int vector,
67                                       uint32_t code, int code_valid);
68 typedef int     (*vmi_get_cap_t)(void *vmi, int vcpu, int num, int *retval);
69 typedef int     (*vmi_set_cap_t)(void *vmi, int vcpu, int num, int val);
70 typedef struct vmspace * (*vmi_vmspace_alloc)(vm_offset_t min, vm_offset_t max);
71 typedef void    (*vmi_vmspace_free)(struct vmspace *vmspace);
72 typedef struct vlapic * (*vmi_vlapic_init)(void *vmi, int vcpu);
73 typedef void    (*vmi_vlapic_cleanup)(void *vmi, struct vlapic *vlapic);
74
75 struct vmm_ops {
76         vmm_init_func_t         init;           /* module wide initialization */
77         vmm_cleanup_func_t      cleanup;
78         vmm_resume_func_t       resume;
79
80         vmi_init_func_t         vminit;         /* vm-specific initialization */
81         vmi_run_func_t          vmrun;
82         vmi_cleanup_func_t      vmcleanup;
83         vmi_get_register_t      vmgetreg;
84         vmi_set_register_t      vmsetreg;
85         vmi_get_desc_t          vmgetdesc;
86         vmi_set_desc_t          vmsetdesc;
87         vmi_inject_event_t      vminject;
88         vmi_get_cap_t           vmgetcap;
89         vmi_set_cap_t           vmsetcap;
90         vmi_vmspace_alloc       vmspace_alloc;
91         vmi_vmspace_free        vmspace_free;
92         vmi_vlapic_init         vlapic_init;
93         vmi_vlapic_cleanup      vlapic_cleanup;
94 };
95
96 extern struct vmm_ops vmm_ops_intel;
97 extern struct vmm_ops vmm_ops_amd;
98
99 int vm_create(const char *name, struct vm **retvm);
100 void vm_destroy(struct vm *vm);
101 const char *vm_name(struct vm *vm);
102 int vm_malloc(struct vm *vm, vm_paddr_t gpa, size_t len);
103 int vm_map_mmio(struct vm *vm, vm_paddr_t gpa, size_t len, vm_paddr_t hpa);
104 int vm_unmap_mmio(struct vm *vm, vm_paddr_t gpa, size_t len);
105 void *vm_gpa_hold(struct vm *, vm_paddr_t gpa, size_t len, int prot,
106                   void **cookie);
107 void vm_gpa_release(void *cookie);
108 int vm_gpabase2memseg(struct vm *vm, vm_paddr_t gpabase,
109               struct vm_memory_segment *seg);
110 int vm_get_memobj(struct vm *vm, vm_paddr_t gpa, size_t len,
111                   vm_offset_t *offset, struct vm_object **object);
112 boolean_t vm_mem_allocated(struct vm *vm, vm_paddr_t gpa);
113 int vm_get_register(struct vm *vm, int vcpu, int reg, uint64_t *retval);
114 int vm_set_register(struct vm *vm, int vcpu, int reg, uint64_t val);
115 int vm_get_seg_desc(struct vm *vm, int vcpu, int reg,
116                     struct seg_desc *ret_desc);
117 int vm_set_seg_desc(struct vm *vm, int vcpu, int reg,
118                     struct seg_desc *desc);
119 int vm_run(struct vm *vm, struct vm_run *vmrun);
120 int vm_inject_event(struct vm *vm, int vcpu, int type,
121                     int vector, uint32_t error_code, int error_code_valid);
122 int vm_inject_nmi(struct vm *vm, int vcpu);
123 int vm_nmi_pending(struct vm *vm, int vcpuid);
124 void vm_nmi_clear(struct vm *vm, int vcpuid);
125 uint64_t *vm_guest_msrs(struct vm *vm, int cpu);
126 struct vlapic *vm_lapic(struct vm *vm, int cpu);
127 struct vioapic *vm_ioapic(struct vm *vm);
128 struct vhpet *vm_hpet(struct vm *vm);
129 int vm_get_capability(struct vm *vm, int vcpu, int type, int *val);
130 int vm_set_capability(struct vm *vm, int vcpu, int type, int val);
131 int vm_get_x2apic_state(struct vm *vm, int vcpu, enum x2apic_state *state);
132 int vm_set_x2apic_state(struct vm *vm, int vcpu, enum x2apic_state state);
133 int vm_apicid2vcpuid(struct vm *vm, int apicid);
134 void vm_activate_cpu(struct vm *vm, int vcpu);
135 cpuset_t vm_active_cpus(struct vm *vm);
136 struct vm_exit *vm_exitinfo(struct vm *vm, int vcpuid);
137
138 /*
139  * Return 1 if device indicated by bus/slot/func is supposed to be a
140  * pci passthrough device.
141  *
142  * Return 0 otherwise.
143  */
144 int vmm_is_pptdev(int bus, int slot, int func);
145
146 void *vm_iommu_domain(struct vm *vm);
147
148 enum vcpu_state {
149         VCPU_IDLE,
150         VCPU_FROZEN,
151         VCPU_RUNNING,
152         VCPU_SLEEPING,
153 };
154
155 int vcpu_set_state(struct vm *vm, int vcpu, enum vcpu_state state,
156     bool from_idle);
157 enum vcpu_state vcpu_get_state(struct vm *vm, int vcpu, int *hostcpu);
158
159 static int __inline
160 vcpu_is_running(struct vm *vm, int vcpu, int *hostcpu)
161 {
162         return (vcpu_get_state(vm, vcpu, hostcpu) == VCPU_RUNNING);
163 }
164
165 void *vcpu_stats(struct vm *vm, int vcpu);
166 void vcpu_notify_event(struct vm *vm, int vcpuid, bool lapic_intr);
167 struct vmspace *vm_get_vmspace(struct vm *vm);
168 int vm_assign_pptdev(struct vm *vm, int bus, int slot, int func);
169 int vm_unassign_pptdev(struct vm *vm, int bus, int slot, int func);
170 #endif  /* KERNEL */
171
172 #include <machine/vmm_instruction_emul.h>
173
174 #define VM_MAXCPU       16                      /* maximum virtual cpus */
175
176 /*
177  * Identifiers for events that can be injected into the VM
178  */
179 enum vm_event_type {
180         VM_EVENT_NONE,
181         VM_HW_INTR,
182         VM_NMI,
183         VM_HW_EXCEPTION,
184         VM_SW_INTR,
185         VM_PRIV_SW_EXCEPTION,
186         VM_SW_EXCEPTION,
187         VM_EVENT_MAX
188 };
189
190 /*
191  * Identifiers for architecturally defined registers.
192  */
193 enum vm_reg_name {
194         VM_REG_GUEST_RAX,
195         VM_REG_GUEST_RBX,
196         VM_REG_GUEST_RCX,
197         VM_REG_GUEST_RDX,
198         VM_REG_GUEST_RSI,
199         VM_REG_GUEST_RDI,
200         VM_REG_GUEST_RBP,
201         VM_REG_GUEST_R8,
202         VM_REG_GUEST_R9,
203         VM_REG_GUEST_R10,
204         VM_REG_GUEST_R11,
205         VM_REG_GUEST_R12,
206         VM_REG_GUEST_R13,
207         VM_REG_GUEST_R14,
208         VM_REG_GUEST_R15,
209         VM_REG_GUEST_CR0,
210         VM_REG_GUEST_CR3,
211         VM_REG_GUEST_CR4,
212         VM_REG_GUEST_DR7,
213         VM_REG_GUEST_RSP,
214         VM_REG_GUEST_RIP,
215         VM_REG_GUEST_RFLAGS,
216         VM_REG_GUEST_ES,
217         VM_REG_GUEST_CS,
218         VM_REG_GUEST_SS,
219         VM_REG_GUEST_DS,
220         VM_REG_GUEST_FS,
221         VM_REG_GUEST_GS,
222         VM_REG_GUEST_LDTR,
223         VM_REG_GUEST_TR,
224         VM_REG_GUEST_IDTR,
225         VM_REG_GUEST_GDTR,
226         VM_REG_GUEST_EFER,
227         VM_REG_LAST
228 };
229
230 /*
231  * Identifiers for optional vmm capabilities
232  */
233 enum vm_cap_type {
234         VM_CAP_HALT_EXIT,
235         VM_CAP_MTRAP_EXIT,
236         VM_CAP_PAUSE_EXIT,
237         VM_CAP_UNRESTRICTED_GUEST,
238         VM_CAP_ENABLE_INVPCID,
239         VM_CAP_MAX
240 };
241
242 enum x2apic_state {
243         X2APIC_ENABLED,
244         X2APIC_AVAILABLE,
245         X2APIC_DISABLED,
246         X2APIC_STATE_LAST
247 };
248
249 /*
250  * The 'access' field has the format specified in Table 21-2 of the Intel
251  * Architecture Manual vol 3b.
252  *
253  * XXX The contents of the 'access' field are architecturally defined except
254  * bit 16 - Segment Unusable.
255  */
256 struct seg_desc {
257         uint64_t        base;
258         uint32_t        limit;
259         uint32_t        access;
260 };
261
262 enum vm_exitcode {
263         VM_EXITCODE_INOUT,
264         VM_EXITCODE_VMX,
265         VM_EXITCODE_BOGUS,
266         VM_EXITCODE_RDMSR,
267         VM_EXITCODE_WRMSR,
268         VM_EXITCODE_HLT,
269         VM_EXITCODE_MTRAP,
270         VM_EXITCODE_PAUSE,
271         VM_EXITCODE_PAGING,
272         VM_EXITCODE_INST_EMUL,
273         VM_EXITCODE_SPINUP_AP,
274         VM_EXITCODE_SPINDOWN_CPU,
275         VM_EXITCODE_MAX
276 };
277
278 struct vm_exit {
279         enum vm_exitcode        exitcode;
280         int                     inst_length;    /* 0 means unknown */
281         uint64_t                rip;
282         union {
283                 struct {
284                         uint16_t        bytes:3;        /* 1 or 2 or 4 */
285                         uint16_t        in:1;           /* out is 0, in is 1 */
286                         uint16_t        string:1;
287                         uint16_t        rep:1;
288                         uint16_t        port;
289                         uint32_t        eax;            /* valid for out */
290                 } inout;
291                 struct {
292                         uint64_t        gpa;
293                         int             fault_type;
294                 } paging;
295                 struct {
296                         uint64_t        gpa;
297                         uint64_t        gla;
298                         uint64_t        cr3;
299                         struct vie      vie;
300                 } inst_emul;
301                 /*
302                  * VMX specific payload. Used when there is no "better"
303                  * exitcode to represent the VM-exit.
304                  */
305                 struct {
306                         int             status;         /* vmx inst status */
307                         /*
308                          * 'exit_reason' and 'exit_qualification' are valid
309                          * only if 'status' is zero.
310                          */
311                         uint32_t        exit_reason;
312                         uint64_t        exit_qualification;
313                         /*
314                          * 'inst_error' and 'inst_type' are valid
315                          * only if 'status' is non-zero.
316                          */
317                         int             inst_type;
318                         int             inst_error;
319                 } vmx;
320                 struct {
321                         uint32_t        code;           /* ecx value */
322                         uint64_t        wval;
323                 } msr;
324                 struct {
325                         int             vcpu;
326                         uint64_t        rip;
327                 } spinup_ap;
328                 struct {
329                         uint64_t        rflags;
330                 } hlt;
331         } u;
332 };
333
334 #endif  /* _VMM_H_ */