xenfunc.c revision 1.16 1 /* $NetBSD: xenfunc.c,v 1.16 2017/02/05 10:42:21 maxv Exp $ */
2
3 /*
4 *
5 * Copyright (c) 2004 Christian Limpach.
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29 #include <sys/cdefs.h>
30 __KERNEL_RCSID(0, "$NetBSD: xenfunc.c,v 1.16 2017/02/05 10:42:21 maxv Exp $");
31
32 #include <sys/param.h>
33
34 #include <uvm/uvm_extern.h>
35
36 #include <machine/intr.h>
37 #include <machine/vmparam.h>
38 #include <machine/pmap.h>
39 #include <xen/xen.h>
40 #include <xen/hypervisor.h>
41 //#include <xen/evtchn.h>
42 #include <xen/xenpmap.h>
43 #include <machine/pte.h>
44
45 #ifdef XENDEBUG_LOW
46 #define __PRINTK(x) printk x
47 #else
48 #define __PRINTK(x)
49 #endif
50
51 void xen_set_ldt(vaddr_t, uint32_t);
52
53 void
54 invlpg(vaddr_t addr)
55 {
56 int s = splvm();
57 xpq_queue_invlpg(addr);
58 splx(s);
59 }
60
61 void
62 lldt(u_short sel)
63 {
64 #ifndef __x86_64__
65 struct cpu_info *ci;
66
67 ci = curcpu();
68
69 if (ci->ci_curldt == sel)
70 return;
71 /* __PRINTK(("ldt %x\n", IDXSELN(sel))); */
72 if (sel == GSEL(GLDT_SEL, SEL_KPL))
73 xen_set_ldt((vaddr_t)ldtstore, NLDT);
74 else
75 xen_set_ldt(ci->ci_gdt[IDXSELN(sel)].ld.ld_base,
76 ci->ci_gdt[IDXSELN(sel)].ld.ld_entries);
77 ci->ci_curldt = sel;
78 #endif
79 }
80
81 void
82 ltr(u_short sel)
83 {
84 panic("XXX ltr not supported\n");
85 }
86
87 void
88 lcr0(u_long val)
89 {
90 panic("XXX lcr0 not supported\n");
91 }
92
93 u_long
94 rcr0(void)
95 {
96 /* XXX: handle X86_CR0_TS ? */
97 return 0;
98 }
99
100 #ifndef __x86_64__
101 void
102 lcr3(vaddr_t val)
103 {
104 int s = splvm();
105 xpq_queue_pt_switch(xpmap_ptom_masked(val));
106 splx(s);
107 }
108 #endif
109
110 void
111 tlbflush(void)
112 {
113 int s = splvm();
114 xpq_queue_tlb_flush();
115 splx(s);
116 }
117
118 void
119 tlbflushg(void)
120 {
121 tlbflush();
122 }
123
124 register_t
125 rdr0(void)
126 {
127
128 return HYPERVISOR_get_debugreg(0);
129 }
130
131 void
132 ldr0(register_t val)
133 {
134
135 HYPERVISOR_set_debugreg(0, val);
136 }
137
138 register_t
139 rdr1(void)
140 {
141
142 return HYPERVISOR_get_debugreg(1);
143 }
144
145 void
146 ldr1(register_t val)
147 {
148
149 HYPERVISOR_set_debugreg(1, val);
150 }
151
152 register_t
153 rdr2(void)
154 {
155
156 return HYPERVISOR_get_debugreg(2);
157 }
158
159 void
160 ldr2(register_t val)
161 {
162
163 HYPERVISOR_set_debugreg(2, val);
164 }
165
166 register_t
167 rdr3(void)
168 {
169
170 return HYPERVISOR_get_debugreg(3);
171 }
172
173 void
174 ldr3(register_t val)
175 {
176
177 HYPERVISOR_set_debugreg(3, val);
178 }
179 register_t
180 rdr6(void)
181 {
182
183 return HYPERVISOR_get_debugreg(6);
184 }
185
186 void
187 ldr6(register_t val)
188 {
189
190 HYPERVISOR_set_debugreg(6, val);
191 }
192
193 register_t
194 rdr7(void)
195 {
196
197 return HYPERVISOR_get_debugreg(7);
198 }
199
200 void
201 ldr7(register_t val)
202 {
203
204 HYPERVISOR_set_debugreg(7, val);
205 }
206
207 void
208 wbinvd(void)
209 {
210
211 xpq_flush_cache();
212 }
213
214 vaddr_t
215 rcr2(void)
216 {
217 return curcpu()->ci_vcpu->arch.cr2;
218 }
219