1 /******************************************************************************
4 * Linux-specific hypervisor handling.
6 * Copyright (c) 2002-2004, K A Fraser
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:
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:
21 * The above copyright notice and this permission notice shall be included in
22 * all copies or substantial portions of the Software.
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
33 #ifndef __HYPERVISOR_H__
34 #define __HYPERVISOR_H__
36 #include <linux/types.h>
37 #include <linux/kernel.h>
38 #include <linux/version.h>
39 #include <linux/errno.h>
40 #include <xen/interface/xen.h>
41 #include <xen/interface/dom0_ops.h>
42 #include <xen/interface/event_channel.h>
43 #include <xen/interface/physdev.h>
44 #include <xen/interface/sched.h>
45 #include <xen/interface/nmi.h>
46 #include <asm/ptrace.h>
49 # ifdef CONFIG_X86_PAE
50 # include <asm-generic/pgtable-nopud.h>
52 # include <asm-generic/pgtable-nopmd.h>
56 extern shared_info_t *HYPERVISOR_shared_info;
58 /* arch/xen/i386/kernel/setup.c */
59 extern start_info_t *xen_start_info;
60 #ifdef CONFIG_XEN_PRIVILEGED_GUEST
61 #define is_initial_xendomain() (xen_start_info->flags & SIF_INITDOMAIN)
63 #define is_initial_xendomain() 0
66 /* arch/xen/kernel/evtchn.c */
67 /* Force a proper event-channel callback from Xen. */
68 void force_evtchn_callback(void);
70 /* arch/xen/kernel/process.c */
71 void xen_cpu_idle (void);
73 /* arch/xen/i386/kernel/hypervisor.c */
74 void do_hypervisor_callback(struct pt_regs *regs);
76 /* arch/xen/i386/mm/hypervisor.c */
78 * NB. ptr values should be PHYSICAL, not MACHINE. 'vals' should be already
79 * be MACHINE addresses.
82 void xen_pt_switch(unsigned long ptr);
83 void xen_new_user_pt(unsigned long ptr); /* x86_64 only */
84 void xen_load_gs(unsigned int selector); /* x86_64 only */
85 void xen_tlb_flush(void);
86 void xen_invlpg(unsigned long ptr);
88 void xen_l1_entry_update(pte_t *ptr, pte_t val);
89 void xen_l2_entry_update(pmd_t *ptr, pmd_t val);
90 void xen_l3_entry_update(pud_t *ptr, pud_t val); /* x86_64/PAE */
91 void xen_l4_entry_update(pgd_t *ptr, pgd_t val); /* x86_64 only */
92 void xen_pgd_pin(unsigned long ptr);
93 void xen_pgd_unpin(unsigned long ptr);
95 void xen_set_ldt(unsigned long ptr, unsigned long bytes);
96 void xen_machphys_update(unsigned long mfn, unsigned long pfn);
99 #include <linux/cpumask.h>
100 void xen_tlb_flush_all(void);
101 void xen_invlpg_all(unsigned long ptr);
102 void xen_tlb_flush_mask(cpumask_t *mask);
103 void xen_invlpg_mask(cpumask_t *mask, unsigned long ptr);
106 /* Returns zero on success else negative errno. */
107 int xen_create_contiguous_region(
108 unsigned long vstart, unsigned int order, unsigned int address_bits);
109 void xen_destroy_contiguous_region(
110 unsigned long vstart, unsigned int order);
112 /* Turn jiffies into Xen system time. */
113 u64 jiffies_to_st(unsigned long jiffies);
115 #include <asm/hypercall.h>
117 #if defined(CONFIG_X86_64)
118 #define MULTI_UVMFLAGS_INDEX 2
119 #define MULTI_UVMDOMID_INDEX 3
121 #define MULTI_UVMFLAGS_INDEX 3
122 #define MULTI_UVMDOMID_INDEX 4
125 #define is_running_on_xen() 1
131 int rc = HYPERVISOR_sched_op(SCHEDOP_yield, NULL);
134 rc = HYPERVISOR_sched_op_compat(SCHEDOP_yield, 0);
143 int rc = HYPERVISOR_sched_op(SCHEDOP_block, NULL);
146 rc = HYPERVISOR_sched_op_compat(SCHEDOP_block, 0);
155 struct sched_shutdown sched_shutdown = {
159 int rc = HYPERVISOR_sched_op(SCHEDOP_shutdown, &sched_shutdown);
162 rc = HYPERVISOR_sched_op_compat(SCHEDOP_shutdown, reason);
169 evtchn_port_t *ports, unsigned int nr_ports, u64 timeout)
172 struct sched_poll sched_poll = {
173 .nr_ports = nr_ports,
174 .timeout = jiffies_to_st(timeout)
176 set_xen_guest_handle(sched_poll.ports, ports);
178 rc = HYPERVISOR_sched_op(SCHEDOP_poll, &sched_poll);
180 rc = HYPERVISOR_sched_op_compat(SCHEDOP_yield, 0);
186 MULTI_update_va_mapping(
187 multicall_entry_t *mcl, unsigned long va,
188 pte_t new_val, unsigned long flags)
190 mcl->op = __HYPERVISOR_update_va_mapping;
192 #if defined(CONFIG_X86_64)
193 mcl->args[1] = new_val.pte;
194 #elif defined(CONFIG_X86_PAE)
195 mcl->args[1] = new_val.pte_low;
196 mcl->args[2] = new_val.pte_high;
198 mcl->args[1] = new_val.pte_low;
201 mcl->args[MULTI_UVMFLAGS_INDEX] = flags;
205 MULTI_grant_table_op(multicall_entry_t *mcl, unsigned int cmd,
206 void *uop, unsigned int count)
208 mcl->op = __HYPERVISOR_grant_table_op;
210 mcl->args[1] = (unsigned long)uop;
211 mcl->args[2] = count;
215 MULTI_update_va_mapping_otherdomain(
216 multicall_entry_t *mcl, unsigned long va,
217 pte_t new_val, unsigned long flags, domid_t domid)
219 mcl->op = __HYPERVISOR_update_va_mapping_otherdomain;
221 #if defined(CONFIG_X86_64)
222 mcl->args[1] = new_val.pte;
223 #elif defined(CONFIG_X86_PAE)
224 mcl->args[1] = new_val.pte_low;
225 mcl->args[2] = new_val.pte_high;
227 mcl->args[1] = new_val.pte_low;
230 mcl->args[MULTI_UVMFLAGS_INDEX] = flags;
231 mcl->args[MULTI_UVMDOMID_INDEX] = domid;
234 #endif /* __HYPERVISOR_H__ */