direct-io.hg

view xen/include/public/arch-x86/xen.h @ 14350:f3f5f2756d75

x86: Add VGCF_onlien flag to vcpu_guest_context.
Change common Xen code to start all VCPUs (except idle ones)
offline. Change arch code to deal with this.
Signed-off-by: Keir Fraser <keir@xensource.com>
author kfraser@localhost.localdomain
date Mon Mar 12 13:53:43 2007 +0000 (2007-03-12)
parents d5ca4c37b3c5
children
line source
1 /******************************************************************************
2 * arch-x86/xen.h
3 *
4 * Guest OS interface to x86 Xen.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to
8 * deal in the Software without restriction, including without limitation the
9 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
10 * sell copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
21 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
22 * DEALINGS IN THE SOFTWARE.
23 *
24 * Copyright (c) 2004-2006, K A Fraser
25 */
27 #ifndef __XEN_PUBLIC_ARCH_X86_XEN_H__
28 #define __XEN_PUBLIC_ARCH_X86_XEN_H__
30 /* Structural guest handles introduced in 0x00030201. */
31 #if __XEN_INTERFACE_VERSION__ >= 0x00030201
32 #define __DEFINE_XEN_GUEST_HANDLE(name, type) \
33 typedef struct { type *p; } __guest_handle_ ## name
34 #else
35 #define __DEFINE_XEN_GUEST_HANDLE(name, type) \
36 typedef type * __guest_handle_ ## name
37 #endif
39 #define DEFINE_XEN_GUEST_HANDLE(name) __DEFINE_XEN_GUEST_HANDLE(name, name)
40 #define XEN_GUEST_HANDLE(name) __guest_handle_ ## name
41 #define set_xen_guest_handle(hnd, val) do { (hnd).p = val; } while (0)
42 #ifdef __XEN_TOOLS__
43 #define get_xen_guest_handle(val, hnd) do { val = (hnd).p; } while (0)
44 #endif
46 #if defined(__i386__)
47 #include "xen-x86_32.h"
48 #elif defined(__x86_64__)
49 #include "xen-x86_64.h"
50 #endif
52 #ifndef __ASSEMBLY__
53 /* Guest handles for primitive C types. */
54 __DEFINE_XEN_GUEST_HANDLE(uchar, unsigned char);
55 __DEFINE_XEN_GUEST_HANDLE(uint, unsigned int);
56 __DEFINE_XEN_GUEST_HANDLE(ulong, unsigned long);
57 DEFINE_XEN_GUEST_HANDLE(char);
58 DEFINE_XEN_GUEST_HANDLE(int);
59 DEFINE_XEN_GUEST_HANDLE(long);
60 DEFINE_XEN_GUEST_HANDLE(void);
62 typedef unsigned long xen_pfn_t;
63 DEFINE_XEN_GUEST_HANDLE(xen_pfn_t);
64 #define PRI_xen_pfn "lx"
65 #endif
67 /*
68 * SEGMENT DESCRIPTOR TABLES
69 */
70 /*
71 * A number of GDT entries are reserved by Xen. These are not situated at the
72 * start of the GDT because some stupid OSes export hard-coded selector values
73 * in their ABI. These hard-coded values are always near the start of the GDT,
74 * so Xen places itself out of the way, at the far end of the GDT.
75 */
76 #define FIRST_RESERVED_GDT_PAGE 14
77 #define FIRST_RESERVED_GDT_BYTE (FIRST_RESERVED_GDT_PAGE * 4096)
78 #define FIRST_RESERVED_GDT_ENTRY (FIRST_RESERVED_GDT_BYTE / 8)
80 /* Maximum number of virtual CPUs in multi-processor guests. */
81 #define MAX_VIRT_CPUS 32
83 #ifndef __ASSEMBLY__
85 typedef unsigned long xen_ulong_t;
87 /*
88 * Send an array of these to HYPERVISOR_set_trap_table().
89 * The privilege level specifies which modes may enter a trap via a software
90 * interrupt. On x86/64, since rings 1 and 2 are unavailable, we allocate
91 * privilege levels as follows:
92 * Level == 0: Noone may enter
93 * Level == 1: Kernel may enter
94 * Level == 2: Kernel may enter
95 * Level == 3: Everyone may enter
96 */
97 #define TI_GET_DPL(_ti) ((_ti)->flags & 3)
98 #define TI_GET_IF(_ti) ((_ti)->flags & 4)
99 #define TI_SET_DPL(_ti,_dpl) ((_ti)->flags |= (_dpl))
100 #define TI_SET_IF(_ti,_if) ((_ti)->flags |= ((!!(_if))<<2))
101 struct trap_info {
102 uint8_t vector; /* exception vector */
103 uint8_t flags; /* 0-3: privilege level; 4: clear event enable? */
104 uint16_t cs; /* code selector */
105 unsigned long address; /* code offset */
106 };
107 typedef struct trap_info trap_info_t;
108 DEFINE_XEN_GUEST_HANDLE(trap_info_t);
110 typedef uint64_t tsc_timestamp_t; /* RDTSC timestamp */
112 /*
113 * The following is all CPU context. Note that the fpu_ctxt block is filled
114 * in by FXSAVE if the CPU has feature FXSR; otherwise FSAVE is used.
115 */
116 struct vcpu_guest_context {
117 /* FPU registers come first so they can be aligned for FXSAVE/FXRSTOR. */
118 struct { char x[512]; } fpu_ctxt; /* User-level FPU registers */
119 #define VGCF_I387_VALID (1<<0)
120 #define VGCF_IN_KERNEL (1<<2)
121 #define _VGCF_i387_valid 0
122 #define VGCF_i387_valid (1<<_VGCF_i387_valid)
123 #define _VGCF_in_kernel 2
124 #define VGCF_in_kernel (1<<_VGCF_in_kernel)
125 #define _VGCF_failsafe_disables_events 3
126 #define VGCF_failsafe_disables_events (1<<_VGCF_failsafe_disables_events)
127 #define _VGCF_syscall_disables_events 4
128 #define VGCF_syscall_disables_events (1<<_VGCF_syscall_disables_events)
129 #define _VGCF_online 5
130 #define VGCF_online (1<<_VGCF_online)
131 unsigned long flags; /* VGCF_* flags */
132 struct cpu_user_regs user_regs; /* User-level CPU registers */
133 struct trap_info trap_ctxt[256]; /* Virtual IDT */
134 unsigned long ldt_base, ldt_ents; /* LDT (linear address, # ents) */
135 unsigned long gdt_frames[16], gdt_ents; /* GDT (machine frames, # ents) */
136 unsigned long kernel_ss, kernel_sp; /* Virtual TSS (only SS1/SP1) */
137 /* NB. User pagetable on x86/64 is placed in ctrlreg[1]. */
138 unsigned long ctrlreg[8]; /* CR0-CR7 (control registers) */
139 unsigned long debugreg[8]; /* DB0-DB7 (debug registers) */
140 #ifdef __i386__
141 unsigned long event_callback_cs; /* CS:EIP of event callback */
142 unsigned long event_callback_eip;
143 unsigned long failsafe_callback_cs; /* CS:EIP of failsafe callback */
144 unsigned long failsafe_callback_eip;
145 #else
146 unsigned long event_callback_eip;
147 unsigned long failsafe_callback_eip;
148 #ifdef __XEN__
149 union {
150 unsigned long syscall_callback_eip;
151 struct {
152 unsigned int event_callback_cs; /* compat CS of event cb */
153 unsigned int failsafe_callback_cs; /* compat CS of failsafe cb */
154 };
155 };
156 #else
157 unsigned long syscall_callback_eip;
158 #endif
159 #endif
160 unsigned long vm_assist; /* VMASST_TYPE_* bitmap */
161 #ifdef __x86_64__
162 /* Segment base addresses. */
163 uint64_t fs_base;
164 uint64_t gs_base_kernel;
165 uint64_t gs_base_user;
166 #endif
167 };
168 typedef struct vcpu_guest_context vcpu_guest_context_t;
169 DEFINE_XEN_GUEST_HANDLE(vcpu_guest_context_t);
171 struct arch_shared_info {
172 unsigned long max_pfn; /* max pfn that appears in table */
173 /* Frame containing list of mfns containing list of mfns containing p2m. */
174 xen_pfn_t pfn_to_mfn_frame_list_list;
175 unsigned long nmi_reason;
176 uint64_t pad[32];
177 };
178 typedef struct arch_shared_info arch_shared_info_t;
180 #endif /* !__ASSEMBLY__ */
182 /*
183 * Prefix forces emulation of some non-trapping instructions.
184 * Currently only CPUID.
185 */
186 #ifdef __ASSEMBLY__
187 #define XEN_EMULATE_PREFIX .byte 0x0f,0x0b,0x78,0x65,0x6e ;
188 #define XEN_CPUID XEN_EMULATE_PREFIX cpuid
189 #else
190 #define XEN_EMULATE_PREFIX ".byte 0x0f,0x0b,0x78,0x65,0x6e ; "
191 #define XEN_CPUID XEN_EMULATE_PREFIX "cpuid"
192 #endif
194 #endif /* __XEN_PUBLIC_ARCH_X86_XEN_H__ */
196 /*
197 * Local variables:
198 * mode: C
199 * c-set-style: "BSD"
200 * c-basic-offset: 4
201 * tab-width: 4
202 * indent-tabs-mode: nil
203 * End:
204 */