direct-io.hg

view linux-2.6-xen-sparse/include/asm-i386/mach-xen/asm/hypervisor.h @ 11150:fda70200da01

[LINUX] Define is_initial_xendomain() to zero for HVM drivers.
Signed-off-by: Steven Smith <ssmith@xensource.com>
author kfraser@localhost.localdomain
date Wed Aug 16 16:16:32 2006 +0100 (2006-08-16)
parents c757ebffd500
children bb52372aa17f
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 /* arch/xen/i386/kernel/setup.c */
60 extern start_info_t *xen_start_info;
61 #ifdef CONFIG_XEN
62 #define is_initial_xendomain() (xen_start_info->flags & SIF_INITDOMAIN)
63 #else
64 #define is_initial_xendomain() 0
65 #endif
67 /* arch/xen/kernel/evtchn.c */
68 /* Force a proper event-channel callback from Xen. */
69 void force_evtchn_callback(void);
71 /* arch/xen/kernel/process.c */
72 void xen_cpu_idle (void);
74 /* arch/xen/i386/kernel/hypervisor.c */
75 void do_hypervisor_callback(struct pt_regs *regs);
77 /* arch/xen/i386/mm/hypervisor.c */
78 /*
79 * NB. ptr values should be PHYSICAL, not MACHINE. 'vals' should be already
80 * be MACHINE addresses.
81 */
83 void xen_pt_switch(unsigned long ptr);
84 void xen_new_user_pt(unsigned long ptr); /* x86_64 only */
85 void xen_load_gs(unsigned int selector); /* x86_64 only */
86 void xen_tlb_flush(void);
87 void xen_invlpg(unsigned long ptr);
89 void xen_l1_entry_update(pte_t *ptr, pte_t val);
90 void xen_l2_entry_update(pmd_t *ptr, pmd_t val);
91 void xen_l3_entry_update(pud_t *ptr, pud_t val); /* x86_64/PAE */
92 void xen_l4_entry_update(pgd_t *ptr, pgd_t val); /* x86_64 only */
93 void xen_pgd_pin(unsigned long ptr);
94 void xen_pgd_unpin(unsigned long ptr);
96 void xen_set_ldt(unsigned long ptr, unsigned long bytes);
97 void xen_machphys_update(unsigned long mfn, unsigned long pfn);
99 #ifdef CONFIG_SMP
100 #include <linux/cpumask.h>
101 void xen_tlb_flush_all(void);
102 void xen_invlpg_all(unsigned long ptr);
103 void xen_tlb_flush_mask(cpumask_t *mask);
104 void xen_invlpg_mask(cpumask_t *mask, unsigned long ptr);
105 #endif
107 /* Returns zero on success else negative errno. */
108 int xen_create_contiguous_region(
109 unsigned long vstart, unsigned int order, unsigned int address_bits);
110 void xen_destroy_contiguous_region(
111 unsigned long vstart, unsigned int order);
113 /* Turn jiffies into Xen system time. */
114 u64 jiffies_to_st(unsigned long jiffies);
116 #include <asm/hypercall.h>
118 #if defined(CONFIG_X86_64)
119 #define MULTI_UVMFLAGS_INDEX 2
120 #define MULTI_UVMDOMID_INDEX 3
121 #else
122 #define MULTI_UVMFLAGS_INDEX 3
123 #define MULTI_UVMDOMID_INDEX 4
124 #endif
126 #define is_running_on_xen() 1
128 static inline int
129 HYPERVISOR_yield(
130 void)
131 {
132 int rc = HYPERVISOR_sched_op(SCHEDOP_yield, NULL);
134 if (rc == -ENOSYS)
135 rc = HYPERVISOR_sched_op_compat(SCHEDOP_yield, 0);
137 return rc;
138 }
140 static inline int
141 HYPERVISOR_block(
142 void)
143 {
144 int rc = HYPERVISOR_sched_op(SCHEDOP_block, NULL);
146 if (rc == -ENOSYS)
147 rc = HYPERVISOR_sched_op_compat(SCHEDOP_block, 0);
149 return rc;
150 }
152 static inline int
153 HYPERVISOR_shutdown(
154 unsigned int reason)
155 {
156 struct sched_shutdown sched_shutdown = {
157 .reason = reason
158 };
160 int rc = HYPERVISOR_sched_op(SCHEDOP_shutdown, &sched_shutdown);
162 if (rc == -ENOSYS)
163 rc = HYPERVISOR_sched_op_compat(SCHEDOP_shutdown, reason);
165 return rc;
166 }
168 static inline int
169 HYPERVISOR_poll(
170 evtchn_port_t *ports, unsigned int nr_ports, u64 timeout)
171 {
172 int rc;
173 struct sched_poll sched_poll = {
174 .nr_ports = nr_ports,
175 .timeout = jiffies_to_st(timeout)
176 };
177 set_xen_guest_handle(sched_poll.ports, ports);
179 rc = HYPERVISOR_sched_op(SCHEDOP_poll, &sched_poll);
180 if (rc == -ENOSYS)
181 rc = HYPERVISOR_sched_op_compat(SCHEDOP_yield, 0);
183 return rc;
184 }
186 static inline void
187 MULTI_update_va_mapping(
188 multicall_entry_t *mcl, unsigned long va,
189 pte_t new_val, unsigned long flags)
190 {
191 mcl->op = __HYPERVISOR_update_va_mapping;
192 mcl->args[0] = va;
193 #if defined(CONFIG_X86_64)
194 mcl->args[1] = new_val.pte;
195 #elif defined(CONFIG_X86_PAE)
196 mcl->args[1] = new_val.pte_low;
197 mcl->args[2] = new_val.pte_high;
198 #else
199 mcl->args[1] = new_val.pte_low;
200 mcl->args[2] = 0;
201 #endif
202 mcl->args[MULTI_UVMFLAGS_INDEX] = flags;
203 }
205 static inline void
206 MULTI_grant_table_op(multicall_entry_t *mcl, unsigned int cmd,
207 void *uop, unsigned int count)
208 {
209 mcl->op = __HYPERVISOR_grant_table_op;
210 mcl->args[0] = cmd;
211 mcl->args[1] = (unsigned long)uop;
212 mcl->args[2] = count;
213 }
215 static inline void
216 MULTI_update_va_mapping_otherdomain(
217 multicall_entry_t *mcl, unsigned long va,
218 pte_t new_val, unsigned long flags, domid_t domid)
219 {
220 mcl->op = __HYPERVISOR_update_va_mapping_otherdomain;
221 mcl->args[0] = va;
222 #if defined(CONFIG_X86_64)
223 mcl->args[1] = new_val.pte;
224 #elif defined(CONFIG_X86_PAE)
225 mcl->args[1] = new_val.pte_low;
226 mcl->args[2] = new_val.pte_high;
227 #else
228 mcl->args[1] = new_val.pte_low;
229 mcl->args[2] = 0;
230 #endif
231 mcl->args[MULTI_UVMFLAGS_INDEX] = flags;
232 mcl->args[MULTI_UVMDOMID_INDEX] = domid;
233 }
235 #endif /* __HYPERVISOR_H__ */