ia64/xen-unstable

view linux-2.6-xen-sparse/include/asm-i386/mach-xen/asm/hypervisor.h @ 14014:b83cfb117bdd

linux: Fix 32-bit build after changeset 13993:168030c8e0a93d8401cf5e783e10ecdf0938abda
Signed-off-by: Keir Fraser <keir@xensource.com>
author kfraser@localhost.localdomain
date Mon Feb 19 22:50:07 2007 +0000 (2007-02-19)
parents 168030c8e0a9
children d7fe2318fc5f
line source
1 /******************************************************************************
2 * hypervisor.h
3 *
4 * Linux-specific hypervisor handling.
5 *
6 * Copyright (c) 2002-2004, K A Fraser
7 *
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License version 2
10 * as published by the Free Software Foundation; or, when distributed
11 * separately from the Linux kernel or incorporated into other
12 * software packages, subject to the following license:
13 *
14 * Permission is hereby granted, free of charge, to any person obtaining a copy
15 * of this source file (the "Software"), to deal in the Software without
16 * restriction, including without limitation the rights to use, copy, modify,
17 * merge, publish, distribute, sublicense, and/or sell copies of the Software,
18 * and to permit persons to whom the Software is furnished to do so, subject to
19 * the following conditions:
20 *
21 * The above copyright notice and this permission notice shall be included in
22 * all copies or substantial portions of the Software.
23 *
24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
25 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
26 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
27 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
28 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
29 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
30 * IN THE SOFTWARE.
31 */
33 #ifndef __HYPERVISOR_H__
34 #define __HYPERVISOR_H__
36 #include <linux/config.h>
37 #include <linux/types.h>
38 #include <linux/kernel.h>
39 #include <linux/version.h>
40 #include <linux/errno.h>
41 #include <xen/interface/xen.h>
42 #include <xen/interface/dom0_ops.h>
43 #include <xen/interface/event_channel.h>
44 #include <xen/interface/physdev.h>
45 #include <xen/interface/sched.h>
46 #include <xen/interface/nmi.h>
47 #include <asm/ptrace.h>
48 #include <asm/page.h>
49 #if defined(__i386__)
50 # ifdef CONFIG_X86_PAE
51 # include <asm-generic/pgtable-nopud.h>
52 # else
53 # include <asm-generic/pgtable-nopmd.h>
54 # endif
55 #endif
57 extern shared_info_t *HYPERVISOR_shared_info;
59 #define vcpu_info(cpu) (HYPERVISOR_shared_info->vcpu_info + (cpu))
60 #define current_vcpu_info() vcpu_info(smp_processor_id())
62 #ifdef CONFIG_X86_32
63 extern unsigned long hypervisor_virt_start;
64 #endif
66 /* arch/xen/i386/kernel/setup.c */
67 extern start_info_t *xen_start_info;
68 #ifdef CONFIG_XEN_PRIVILEGED_GUEST
69 #define is_initial_xendomain() (xen_start_info->flags & SIF_INITDOMAIN)
70 #else
71 #define is_initial_xendomain() 0
72 #endif
74 /* arch/xen/kernel/evtchn.c */
75 /* Force a proper event-channel callback from Xen. */
76 void force_evtchn_callback(void);
78 /* arch/xen/kernel/process.c */
79 void xen_cpu_idle (void);
81 /* arch/xen/i386/kernel/hypervisor.c */
82 void do_hypervisor_callback(struct pt_regs *regs);
84 /* arch/xen/i386/mm/hypervisor.c */
85 /*
86 * NB. ptr values should be PHYSICAL, not MACHINE. 'vals' should be already
87 * be MACHINE addresses.
88 */
90 void xen_pt_switch(unsigned long ptr);
91 void xen_new_user_pt(unsigned long ptr); /* x86_64 only */
92 void xen_load_gs(unsigned int selector); /* x86_64 only */
93 void xen_tlb_flush(void);
94 void xen_invlpg(unsigned long ptr);
96 void xen_l1_entry_update(pte_t *ptr, pte_t val);
97 void xen_l2_entry_update(pmd_t *ptr, pmd_t val);
98 void xen_l3_entry_update(pud_t *ptr, pud_t val); /* x86_64/PAE */
99 void xen_l4_entry_update(pgd_t *ptr, pgd_t val); /* x86_64 only */
100 void xen_pgd_pin(unsigned long ptr);
101 void xen_pgd_unpin(unsigned long ptr);
103 void xen_set_ldt(unsigned long ptr, unsigned long bytes);
105 #ifdef CONFIG_SMP
106 #include <linux/cpumask.h>
107 void xen_tlb_flush_all(void);
108 void xen_invlpg_all(unsigned long ptr);
109 void xen_tlb_flush_mask(cpumask_t *mask);
110 void xen_invlpg_mask(cpumask_t *mask, unsigned long ptr);
111 #endif
113 /* Returns zero on success else negative errno. */
114 int xen_create_contiguous_region(
115 unsigned long vstart, unsigned int order, unsigned int address_bits);
116 void xen_destroy_contiguous_region(
117 unsigned long vstart, unsigned int order);
119 /* Turn jiffies into Xen system time. */
120 u64 jiffies_to_st(unsigned long jiffies);
122 #include <asm/hypercall.h>
124 #if defined(CONFIG_X86_64)
125 #define MULTI_UVMFLAGS_INDEX 2
126 #define MULTI_UVMDOMID_INDEX 3
127 #else
128 #define MULTI_UVMFLAGS_INDEX 3
129 #define MULTI_UVMDOMID_INDEX 4
130 #endif
132 #define is_running_on_xen() 1
134 static inline int
135 HYPERVISOR_yield(
136 void)
137 {
138 int rc = HYPERVISOR_sched_op(SCHEDOP_yield, NULL);
140 #ifdef CONFIG_XEN_COMPAT_030002
141 if (rc == -ENOSYS)
142 rc = HYPERVISOR_sched_op_compat(SCHEDOP_yield, 0);
143 #endif
145 return rc;
146 }
148 static inline int
149 HYPERVISOR_block(
150 void)
151 {
152 int rc = HYPERVISOR_sched_op(SCHEDOP_block, NULL);
154 #ifdef CONFIG_XEN_COMPAT_030002
155 if (rc == -ENOSYS)
156 rc = HYPERVISOR_sched_op_compat(SCHEDOP_block, 0);
157 #endif
159 return rc;
160 }
162 static inline int
163 HYPERVISOR_shutdown(
164 unsigned int reason)
165 {
166 struct sched_shutdown sched_shutdown = {
167 .reason = reason
168 };
170 int rc = HYPERVISOR_sched_op(SCHEDOP_shutdown, &sched_shutdown);
172 #ifdef CONFIG_XEN_COMPAT_030002
173 if (rc == -ENOSYS)
174 rc = HYPERVISOR_sched_op_compat(SCHEDOP_shutdown, reason);
175 #endif
177 return rc;
178 }
180 static inline int
181 HYPERVISOR_poll(
182 evtchn_port_t *ports, unsigned int nr_ports, u64 timeout)
183 {
184 int rc;
185 struct sched_poll sched_poll = {
186 .nr_ports = nr_ports,
187 .timeout = jiffies_to_st(timeout)
188 };
189 set_xen_guest_handle(sched_poll.ports, ports);
191 rc = HYPERVISOR_sched_op(SCHEDOP_poll, &sched_poll);
192 #ifdef CONFIG_XEN_COMPAT_030002
193 if (rc == -ENOSYS)
194 rc = HYPERVISOR_sched_op_compat(SCHEDOP_yield, 0);
195 #endif
197 return rc;
198 }
200 static inline void
201 MULTI_update_va_mapping(
202 multicall_entry_t *mcl, unsigned long va,
203 pte_t new_val, unsigned long flags)
204 {
205 mcl->op = __HYPERVISOR_update_va_mapping;
206 mcl->args[0] = va;
207 #if defined(CONFIG_X86_64)
208 mcl->args[1] = new_val.pte;
209 #elif defined(CONFIG_X86_PAE)
210 mcl->args[1] = new_val.pte_low;
211 mcl->args[2] = new_val.pte_high;
212 #else
213 mcl->args[1] = new_val.pte_low;
214 mcl->args[2] = 0;
215 #endif
216 mcl->args[MULTI_UVMFLAGS_INDEX] = flags;
217 }
219 static inline void
220 MULTI_grant_table_op(multicall_entry_t *mcl, unsigned int cmd,
221 void *uop, unsigned int count)
222 {
223 mcl->op = __HYPERVISOR_grant_table_op;
224 mcl->args[0] = cmd;
225 mcl->args[1] = (unsigned long)uop;
226 mcl->args[2] = count;
227 }
229 static inline void
230 MULTI_update_va_mapping_otherdomain(
231 multicall_entry_t *mcl, unsigned long va,
232 pte_t new_val, unsigned long flags, domid_t domid)
233 {
234 mcl->op = __HYPERVISOR_update_va_mapping_otherdomain;
235 mcl->args[0] = va;
236 #if defined(CONFIG_X86_64)
237 mcl->args[1] = new_val.pte;
238 #elif defined(CONFIG_X86_PAE)
239 mcl->args[1] = new_val.pte_low;
240 mcl->args[2] = new_val.pte_high;
241 #else
242 mcl->args[1] = new_val.pte_low;
243 mcl->args[2] = 0;
244 #endif
245 mcl->args[MULTI_UVMFLAGS_INDEX] = flags;
246 mcl->args[MULTI_UVMDOMID_INDEX] = domid;
247 }
249 #endif /* __HYPERVISOR_H__ */