1 | /* $NetBSD: xenfunc.c,v 1.13 2011/11/06 11:40:47 cherry 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 1.13 2011/11/06 11:40:47 cherry 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)ldt, 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 | vaddr_t |
125 | rdr6(void) |
126 | { |
127 | u_int val; |
128 | |
129 | val = HYPERVISOR_get_debugreg(6); |
130 | return val; |
131 | } |
132 | |
133 | void |
134 | ldr6(vaddr_t val) |
135 | { |
136 | |
137 | HYPERVISOR_set_debugreg(6, val); |
138 | } |
139 | |
140 | void |
141 | wbinvd(void) |
142 | { |
143 | |
144 | xpq_flush_cache(); |
145 | } |
146 | |
147 | vaddr_t |
148 | rcr2(void) |
149 | { |
150 | return curcpu()->ci_vcpu->arch.cr2; |
151 | } |
152 | |