root / hw / intc / apic.c @ a8aec295
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1 | 574bbf7b | bellard | /*
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2 | 574bbf7b | bellard | * APIC support
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3 | 5fafdf24 | ths | *
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4 | 574bbf7b | bellard | * Copyright (c) 2004-2005 Fabrice Bellard
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5 | 574bbf7b | bellard | *
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6 | 574bbf7b | bellard | * This library is free software; you can redistribute it and/or
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7 | 574bbf7b | bellard | * modify it under the terms of the GNU Lesser General Public
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8 | 574bbf7b | bellard | * License as published by the Free Software Foundation; either
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9 | 574bbf7b | bellard | * version 2 of the License, or (at your option) any later version.
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10 | 574bbf7b | bellard | *
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11 | 574bbf7b | bellard | * This library is distributed in the hope that it will be useful,
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12 | 574bbf7b | bellard | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 | 574bbf7b | bellard | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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14 | 574bbf7b | bellard | * Lesser General Public License for more details.
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15 | 574bbf7b | bellard | *
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16 | 574bbf7b | bellard | * You should have received a copy of the GNU Lesser General Public
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17 | 8167ee88 | Blue Swirl | * License along with this library; if not, see <http://www.gnu.org/licenses/>
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18 | 574bbf7b | bellard | */
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19 | 1de7afc9 | Paolo Bonzini | #include "qemu/thread.h" |
20 | 0d09e41a | Paolo Bonzini | #include "hw/i386/apic_internal.h" |
21 | 0d09e41a | Paolo Bonzini | #include "hw/i386/apic.h" |
22 | 0d09e41a | Paolo Bonzini | #include "hw/i386/ioapic.h" |
23 | 83c9f4ca | Paolo Bonzini | #include "hw/pci/msi.h" |
24 | 1de7afc9 | Paolo Bonzini | #include "qemu/host-utils.h" |
25 | d8023f31 | Blue Swirl | #include "trace.h" |
26 | 0d09e41a | Paolo Bonzini | #include "hw/i386/pc.h" |
27 | 0d09e41a | Paolo Bonzini | #include "hw/i386/apic-msidef.h" |
28 | 574bbf7b | bellard | |
29 | d3e9db93 | bellard | #define MAX_APIC_WORDS 8 |
30 | d3e9db93 | bellard | |
31 | e5ad936b | Jan Kiszka | #define SYNC_FROM_VAPIC 0x1 |
32 | e5ad936b | Jan Kiszka | #define SYNC_TO_VAPIC 0x2 |
33 | e5ad936b | Jan Kiszka | #define SYNC_ISR_IRR_TO_VAPIC 0x4 |
34 | e5ad936b | Jan Kiszka | |
35 | dae01685 | Jan Kiszka | static APICCommonState *local_apics[MAX_APICS + 1]; |
36 | 73822ec8 | aliguori | |
37 | dae01685 | Jan Kiszka | static void apic_set_irq(APICCommonState *s, int vector_num, int trigger_mode); |
38 | dae01685 | Jan Kiszka | static void apic_update_irq(APICCommonState *s); |
39 | 610626af | aliguori | static void apic_get_delivery_bitmask(uint32_t *deliver_bitmask, |
40 | 610626af | aliguori | uint8_t dest, uint8_t dest_mode); |
41 | d592d303 | bellard | |
42 | 3b63c04e | aurel32 | /* Find first bit starting from msb */
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43 | edf9735e | Michael S. Tsirkin | static int apic_fls_bit(uint32_t value) |
44 | 3b63c04e | aurel32 | { |
45 | 3b63c04e | aurel32 | return 31 - clz32(value); |
46 | 3b63c04e | aurel32 | } |
47 | 3b63c04e | aurel32 | |
48 | e95f5491 | aurel32 | /* Find first bit starting from lsb */
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49 | edf9735e | Michael S. Tsirkin | static int apic_ffs_bit(uint32_t value) |
50 | d3e9db93 | bellard | { |
51 | bb7e7293 | aurel32 | return ctz32(value);
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52 | d3e9db93 | bellard | } |
53 | d3e9db93 | bellard | |
54 | edf9735e | Michael S. Tsirkin | static inline void apic_set_bit(uint32_t *tab, int index) |
55 | d3e9db93 | bellard | { |
56 | d3e9db93 | bellard | int i, mask;
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57 | d3e9db93 | bellard | i = index >> 5;
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58 | d3e9db93 | bellard | mask = 1 << (index & 0x1f); |
59 | d3e9db93 | bellard | tab[i] |= mask; |
60 | d3e9db93 | bellard | } |
61 | d3e9db93 | bellard | |
62 | edf9735e | Michael S. Tsirkin | static inline void apic_reset_bit(uint32_t *tab, int index) |
63 | d3e9db93 | bellard | { |
64 | d3e9db93 | bellard | int i, mask;
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65 | d3e9db93 | bellard | i = index >> 5;
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66 | d3e9db93 | bellard | mask = 1 << (index & 0x1f); |
67 | d3e9db93 | bellard | tab[i] &= ~mask; |
68 | d3e9db93 | bellard | } |
69 | d3e9db93 | bellard | |
70 | edf9735e | Michael S. Tsirkin | static inline int apic_get_bit(uint32_t *tab, int index) |
71 | 73822ec8 | aliguori | { |
72 | 73822ec8 | aliguori | int i, mask;
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73 | 73822ec8 | aliguori | i = index >> 5;
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74 | 73822ec8 | aliguori | mask = 1 << (index & 0x1f); |
75 | 73822ec8 | aliguori | return !!(tab[i] & mask);
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76 | 73822ec8 | aliguori | } |
77 | 73822ec8 | aliguori | |
78 | e5ad936b | Jan Kiszka | /* return -1 if no bit is set */
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79 | e5ad936b | Jan Kiszka | static int get_highest_priority_int(uint32_t *tab) |
80 | e5ad936b | Jan Kiszka | { |
81 | e5ad936b | Jan Kiszka | int i;
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82 | e5ad936b | Jan Kiszka | for (i = 7; i >= 0; i--) { |
83 | e5ad936b | Jan Kiszka | if (tab[i] != 0) { |
84 | edf9735e | Michael S. Tsirkin | return i * 32 + apic_fls_bit(tab[i]); |
85 | e5ad936b | Jan Kiszka | } |
86 | e5ad936b | Jan Kiszka | } |
87 | e5ad936b | Jan Kiszka | return -1; |
88 | e5ad936b | Jan Kiszka | } |
89 | e5ad936b | Jan Kiszka | |
90 | e5ad936b | Jan Kiszka | static void apic_sync_vapic(APICCommonState *s, int sync_type) |
91 | e5ad936b | Jan Kiszka | { |
92 | e5ad936b | Jan Kiszka | VAPICState vapic_state; |
93 | e5ad936b | Jan Kiszka | size_t length; |
94 | e5ad936b | Jan Kiszka | off_t start; |
95 | e5ad936b | Jan Kiszka | int vector;
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96 | e5ad936b | Jan Kiszka | |
97 | e5ad936b | Jan Kiszka | if (!s->vapic_paddr) {
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98 | e5ad936b | Jan Kiszka | return;
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99 | e5ad936b | Jan Kiszka | } |
100 | e5ad936b | Jan Kiszka | if (sync_type & SYNC_FROM_VAPIC) {
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101 | e5ad936b | Jan Kiszka | cpu_physical_memory_rw(s->vapic_paddr, (void *)&vapic_state,
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102 | e5ad936b | Jan Kiszka | sizeof(vapic_state), 0); |
103 | e5ad936b | Jan Kiszka | s->tpr = vapic_state.tpr; |
104 | e5ad936b | Jan Kiszka | } |
105 | e5ad936b | Jan Kiszka | if (sync_type & (SYNC_TO_VAPIC | SYNC_ISR_IRR_TO_VAPIC)) {
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106 | e5ad936b | Jan Kiszka | start = offsetof(VAPICState, isr); |
107 | e5ad936b | Jan Kiszka | length = offsetof(VAPICState, enabled) - offsetof(VAPICState, isr); |
108 | e5ad936b | Jan Kiszka | |
109 | e5ad936b | Jan Kiszka | if (sync_type & SYNC_TO_VAPIC) {
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110 | 60e82579 | Andreas Färber | assert(qemu_cpu_is_self(CPU(s->cpu))); |
111 | e5ad936b | Jan Kiszka | |
112 | e5ad936b | Jan Kiszka | vapic_state.tpr = s->tpr; |
113 | e5ad936b | Jan Kiszka | vapic_state.enabled = 1;
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114 | e5ad936b | Jan Kiszka | start = 0;
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115 | e5ad936b | Jan Kiszka | length = sizeof(VAPICState);
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116 | e5ad936b | Jan Kiszka | } |
117 | e5ad936b | Jan Kiszka | |
118 | e5ad936b | Jan Kiszka | vector = get_highest_priority_int(s->isr); |
119 | e5ad936b | Jan Kiszka | if (vector < 0) { |
120 | e5ad936b | Jan Kiszka | vector = 0;
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121 | e5ad936b | Jan Kiszka | } |
122 | e5ad936b | Jan Kiszka | vapic_state.isr = vector & 0xf0;
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123 | e5ad936b | Jan Kiszka | |
124 | e5ad936b | Jan Kiszka | vapic_state.zero = 0;
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125 | e5ad936b | Jan Kiszka | |
126 | e5ad936b | Jan Kiszka | vector = get_highest_priority_int(s->irr); |
127 | e5ad936b | Jan Kiszka | if (vector < 0) { |
128 | e5ad936b | Jan Kiszka | vector = 0;
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129 | e5ad936b | Jan Kiszka | } |
130 | e5ad936b | Jan Kiszka | vapic_state.irr = vector & 0xff;
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131 | e5ad936b | Jan Kiszka | |
132 | e5ad936b | Jan Kiszka | cpu_physical_memory_write_rom(s->vapic_paddr + start, |
133 | e5ad936b | Jan Kiszka | ((void *)&vapic_state) + start, length);
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134 | e5ad936b | Jan Kiszka | } |
135 | e5ad936b | Jan Kiszka | } |
136 | e5ad936b | Jan Kiszka | |
137 | e5ad936b | Jan Kiszka | static void apic_vapic_base_update(APICCommonState *s) |
138 | e5ad936b | Jan Kiszka | { |
139 | e5ad936b | Jan Kiszka | apic_sync_vapic(s, SYNC_TO_VAPIC); |
140 | e5ad936b | Jan Kiszka | } |
141 | e5ad936b | Jan Kiszka | |
142 | dae01685 | Jan Kiszka | static void apic_local_deliver(APICCommonState *s, int vector) |
143 | a5b38b51 | aurel32 | { |
144 | a5b38b51 | aurel32 | uint32_t lvt = s->lvt[vector]; |
145 | a5b38b51 | aurel32 | int trigger_mode;
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146 | a5b38b51 | aurel32 | |
147 | d8023f31 | Blue Swirl | trace_apic_local_deliver(vector, (lvt >> 8) & 7); |
148 | d8023f31 | Blue Swirl | |
149 | a5b38b51 | aurel32 | if (lvt & APIC_LVT_MASKED)
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150 | a5b38b51 | aurel32 | return;
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151 | a5b38b51 | aurel32 | |
152 | a5b38b51 | aurel32 | switch ((lvt >> 8) & 7) { |
153 | a5b38b51 | aurel32 | case APIC_DM_SMI:
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154 | c3affe56 | Andreas Färber | cpu_interrupt(CPU(s->cpu), CPU_INTERRUPT_SMI); |
155 | a5b38b51 | aurel32 | break;
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156 | a5b38b51 | aurel32 | |
157 | a5b38b51 | aurel32 | case APIC_DM_NMI:
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158 | c3affe56 | Andreas Färber | cpu_interrupt(CPU(s->cpu), CPU_INTERRUPT_NMI); |
159 | a5b38b51 | aurel32 | break;
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160 | a5b38b51 | aurel32 | |
161 | a5b38b51 | aurel32 | case APIC_DM_EXTINT:
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162 | c3affe56 | Andreas Färber | cpu_interrupt(CPU(s->cpu), CPU_INTERRUPT_HARD); |
163 | a5b38b51 | aurel32 | break;
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164 | a5b38b51 | aurel32 | |
165 | a5b38b51 | aurel32 | case APIC_DM_FIXED:
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166 | a5b38b51 | aurel32 | trigger_mode = APIC_TRIGGER_EDGE; |
167 | a5b38b51 | aurel32 | if ((vector == APIC_LVT_LINT0 || vector == APIC_LVT_LINT1) &&
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168 | a5b38b51 | aurel32 | (lvt & APIC_LVT_LEVEL_TRIGGER)) |
169 | a5b38b51 | aurel32 | trigger_mode = APIC_TRIGGER_LEVEL; |
170 | a5b38b51 | aurel32 | apic_set_irq(s, lvt & 0xff, trigger_mode);
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171 | a5b38b51 | aurel32 | } |
172 | a5b38b51 | aurel32 | } |
173 | a5b38b51 | aurel32 | |
174 | 92a16d7a | Blue Swirl | void apic_deliver_pic_intr(DeviceState *d, int level) |
175 | 1a7de94a | aurel32 | { |
176 | dae01685 | Jan Kiszka | APICCommonState *s = DO_UPCAST(APICCommonState, busdev.qdev, d); |
177 | 92a16d7a | Blue Swirl | |
178 | cf6d64bf | Blue Swirl | if (level) {
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179 | cf6d64bf | Blue Swirl | apic_local_deliver(s, APIC_LVT_LINT0); |
180 | cf6d64bf | Blue Swirl | } else {
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181 | 1a7de94a | aurel32 | uint32_t lvt = s->lvt[APIC_LVT_LINT0]; |
182 | 1a7de94a | aurel32 | |
183 | 1a7de94a | aurel32 | switch ((lvt >> 8) & 7) { |
184 | 1a7de94a | aurel32 | case APIC_DM_FIXED:
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185 | 1a7de94a | aurel32 | if (!(lvt & APIC_LVT_LEVEL_TRIGGER))
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186 | 1a7de94a | aurel32 | break;
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187 | edf9735e | Michael S. Tsirkin | apic_reset_bit(s->irr, lvt & 0xff);
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188 | 1a7de94a | aurel32 | /* fall through */
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189 | 1a7de94a | aurel32 | case APIC_DM_EXTINT:
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190 | d8ed887b | Andreas Färber | cpu_reset_interrupt(CPU(s->cpu), CPU_INTERRUPT_HARD); |
191 | 1a7de94a | aurel32 | break;
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192 | 1a7de94a | aurel32 | } |
193 | 1a7de94a | aurel32 | } |
194 | 1a7de94a | aurel32 | } |
195 | 1a7de94a | aurel32 | |
196 | dae01685 | Jan Kiszka | static void apic_external_nmi(APICCommonState *s) |
197 | 02c09195 | Jan Kiszka | { |
198 | 02c09195 | Jan Kiszka | apic_local_deliver(s, APIC_LVT_LINT1); |
199 | 02c09195 | Jan Kiszka | } |
200 | 02c09195 | Jan Kiszka | |
201 | d3e9db93 | bellard | #define foreach_apic(apic, deliver_bitmask, code) \
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202 | d3e9db93 | bellard | {\ |
203 | d3e9db93 | bellard | int __i, __j, __mask;\
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204 | d3e9db93 | bellard | for(__i = 0; __i < MAX_APIC_WORDS; __i++) {\ |
205 | d3e9db93 | bellard | __mask = deliver_bitmask[__i];\ |
206 | d3e9db93 | bellard | if (__mask) {\
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207 | d3e9db93 | bellard | for(__j = 0; __j < 32; __j++) {\ |
208 | d3e9db93 | bellard | if (__mask & (1 << __j)) {\ |
209 | d3e9db93 | bellard | apic = local_apics[__i * 32 + __j];\
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210 | d3e9db93 | bellard | if (apic) {\
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211 | d3e9db93 | bellard | code;\ |
212 | d3e9db93 | bellard | }\ |
213 | d3e9db93 | bellard | }\ |
214 | d3e9db93 | bellard | }\ |
215 | d3e9db93 | bellard | }\ |
216 | d3e9db93 | bellard | }\ |
217 | d3e9db93 | bellard | } |
218 | d3e9db93 | bellard | |
219 | 5fafdf24 | ths | static void apic_bus_deliver(const uint32_t *deliver_bitmask, |
220 | 1f6f408c | Jan Kiszka | uint8_t delivery_mode, uint8_t vector_num, |
221 | d592d303 | bellard | uint8_t trigger_mode) |
222 | d592d303 | bellard | { |
223 | dae01685 | Jan Kiszka | APICCommonState *apic_iter; |
224 | d592d303 | bellard | |
225 | d592d303 | bellard | switch (delivery_mode) {
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226 | d592d303 | bellard | case APIC_DM_LOWPRI:
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227 | 8dd69b8f | bellard | /* XXX: search for focus processor, arbitration */
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228 | d3e9db93 | bellard | { |
229 | d3e9db93 | bellard | int i, d;
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230 | d3e9db93 | bellard | d = -1;
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231 | d3e9db93 | bellard | for(i = 0; i < MAX_APIC_WORDS; i++) { |
232 | d3e9db93 | bellard | if (deliver_bitmask[i]) {
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233 | edf9735e | Michael S. Tsirkin | d = i * 32 + apic_ffs_bit(deliver_bitmask[i]);
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234 | d3e9db93 | bellard | break;
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235 | d3e9db93 | bellard | } |
236 | d3e9db93 | bellard | } |
237 | d3e9db93 | bellard | if (d >= 0) { |
238 | d3e9db93 | bellard | apic_iter = local_apics[d]; |
239 | d3e9db93 | bellard | if (apic_iter) {
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240 | d3e9db93 | bellard | apic_set_irq(apic_iter, vector_num, trigger_mode); |
241 | d3e9db93 | bellard | } |
242 | d3e9db93 | bellard | } |
243 | 8dd69b8f | bellard | } |
244 | d3e9db93 | bellard | return;
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245 | 8dd69b8f | bellard | |
246 | d592d303 | bellard | case APIC_DM_FIXED:
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247 | d592d303 | bellard | break;
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248 | d592d303 | bellard | |
249 | d592d303 | bellard | case APIC_DM_SMI:
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250 | e2eb9d3e | aurel32 | foreach_apic(apic_iter, deliver_bitmask, |
251 | c3affe56 | Andreas Färber | cpu_interrupt(CPU(apic_iter->cpu), CPU_INTERRUPT_SMI) |
252 | 60671e58 | Andreas Färber | ); |
253 | e2eb9d3e | aurel32 | return;
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254 | e2eb9d3e | aurel32 | |
255 | d592d303 | bellard | case APIC_DM_NMI:
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256 | e2eb9d3e | aurel32 | foreach_apic(apic_iter, deliver_bitmask, |
257 | c3affe56 | Andreas Färber | cpu_interrupt(CPU(apic_iter->cpu), CPU_INTERRUPT_NMI) |
258 | 60671e58 | Andreas Färber | ); |
259 | e2eb9d3e | aurel32 | return;
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260 | d592d303 | bellard | |
261 | d592d303 | bellard | case APIC_DM_INIT:
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262 | d592d303 | bellard | /* normal INIT IPI sent to processors */
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263 | 5fafdf24 | ths | foreach_apic(apic_iter, deliver_bitmask, |
264 | c3affe56 | Andreas Färber | cpu_interrupt(CPU(apic_iter->cpu), |
265 | 60671e58 | Andreas Färber | CPU_INTERRUPT_INIT) |
266 | 60671e58 | Andreas Färber | ); |
267 | d592d303 | bellard | return;
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268 | 3b46e624 | ths | |
269 | d592d303 | bellard | case APIC_DM_EXTINT:
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270 | b1fc0348 | bellard | /* handled in I/O APIC code */
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271 | d592d303 | bellard | break;
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272 | d592d303 | bellard | |
273 | d592d303 | bellard | default:
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274 | d592d303 | bellard | return;
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275 | d592d303 | bellard | } |
276 | d592d303 | bellard | |
277 | 5fafdf24 | ths | foreach_apic(apic_iter, deliver_bitmask, |
278 | d3e9db93 | bellard | apic_set_irq(apic_iter, vector_num, trigger_mode) ); |
279 | d592d303 | bellard | } |
280 | 574bbf7b | bellard | |
281 | 1f6f408c | Jan Kiszka | void apic_deliver_irq(uint8_t dest, uint8_t dest_mode, uint8_t delivery_mode,
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282 | 1f6f408c | Jan Kiszka | uint8_t vector_num, uint8_t trigger_mode) |
283 | 610626af | aliguori | { |
284 | 610626af | aliguori | uint32_t deliver_bitmask[MAX_APIC_WORDS]; |
285 | 610626af | aliguori | |
286 | d8023f31 | Blue Swirl | trace_apic_deliver_irq(dest, dest_mode, delivery_mode, vector_num, |
287 | 1f6f408c | Jan Kiszka | trigger_mode); |
288 | d8023f31 | Blue Swirl | |
289 | 610626af | aliguori | apic_get_delivery_bitmask(deliver_bitmask, dest, dest_mode); |
290 | 1f6f408c | Jan Kiszka | apic_bus_deliver(deliver_bitmask, delivery_mode, vector_num, trigger_mode); |
291 | 610626af | aliguori | } |
292 | 610626af | aliguori | |
293 | dae01685 | Jan Kiszka | static void apic_set_base(APICCommonState *s, uint64_t val) |
294 | 574bbf7b | bellard | { |
295 | 5fafdf24 | ths | s->apicbase = (val & 0xfffff000) |
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296 | 574bbf7b | bellard | (s->apicbase & (MSR_IA32_APICBASE_BSP | MSR_IA32_APICBASE_ENABLE)); |
297 | 574bbf7b | bellard | /* if disabled, cannot be enabled again */
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298 | 574bbf7b | bellard | if (!(val & MSR_IA32_APICBASE_ENABLE)) {
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299 | 574bbf7b | bellard | s->apicbase &= ~MSR_IA32_APICBASE_ENABLE; |
300 | 60671e58 | Andreas Färber | cpu_clear_apic_feature(&s->cpu->env); |
301 | 574bbf7b | bellard | s->spurious_vec &= ~APIC_SV_ENABLE; |
302 | 574bbf7b | bellard | } |
303 | 574bbf7b | bellard | } |
304 | 574bbf7b | bellard | |
305 | dae01685 | Jan Kiszka | static void apic_set_tpr(APICCommonState *s, uint8_t val) |
306 | 574bbf7b | bellard | { |
307 | e5ad936b | Jan Kiszka | /* Updates from cr8 are ignored while the VAPIC is active */
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308 | e5ad936b | Jan Kiszka | if (!s->vapic_paddr) {
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309 | e5ad936b | Jan Kiszka | s->tpr = val << 4;
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310 | e5ad936b | Jan Kiszka | apic_update_irq(s); |
311 | e5ad936b | Jan Kiszka | } |
312 | 9230e66e | bellard | } |
313 | 9230e66e | bellard | |
314 | e5ad936b | Jan Kiszka | static uint8_t apic_get_tpr(APICCommonState *s)
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315 | d592d303 | bellard | { |
316 | e5ad936b | Jan Kiszka | apic_sync_vapic(s, SYNC_FROM_VAPIC); |
317 | e5ad936b | Jan Kiszka | return s->tpr >> 4; |
318 | d592d303 | bellard | } |
319 | d592d303 | bellard | |
320 | dae01685 | Jan Kiszka | static int apic_get_ppr(APICCommonState *s) |
321 | 574bbf7b | bellard | { |
322 | 574bbf7b | bellard | int tpr, isrv, ppr;
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323 | 574bbf7b | bellard | |
324 | 574bbf7b | bellard | tpr = (s->tpr >> 4);
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325 | 574bbf7b | bellard | isrv = get_highest_priority_int(s->isr); |
326 | 574bbf7b | bellard | if (isrv < 0) |
327 | 574bbf7b | bellard | isrv = 0;
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328 | 574bbf7b | bellard | isrv >>= 4;
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329 | 574bbf7b | bellard | if (tpr >= isrv)
|
330 | 574bbf7b | bellard | ppr = s->tpr; |
331 | 574bbf7b | bellard | else
|
332 | 574bbf7b | bellard | ppr = isrv << 4;
|
333 | 574bbf7b | bellard | return ppr;
|
334 | 574bbf7b | bellard | } |
335 | 574bbf7b | bellard | |
336 | dae01685 | Jan Kiszka | static int apic_get_arb_pri(APICCommonState *s) |
337 | d592d303 | bellard | { |
338 | d592d303 | bellard | /* XXX: arbitration */
|
339 | d592d303 | bellard | return 0; |
340 | d592d303 | bellard | } |
341 | d592d303 | bellard | |
342 | 0fbfbb59 | Gleb Natapov | |
343 | 0fbfbb59 | Gleb Natapov | /*
|
344 | 0fbfbb59 | Gleb Natapov | * <0 - low prio interrupt,
|
345 | 0fbfbb59 | Gleb Natapov | * 0 - no interrupt,
|
346 | 0fbfbb59 | Gleb Natapov | * >0 - interrupt number
|
347 | 0fbfbb59 | Gleb Natapov | */
|
348 | dae01685 | Jan Kiszka | static int apic_irq_pending(APICCommonState *s) |
349 | 574bbf7b | bellard | { |
350 | d592d303 | bellard | int irrv, ppr;
|
351 | 574bbf7b | bellard | irrv = get_highest_priority_int(s->irr); |
352 | 0fbfbb59 | Gleb Natapov | if (irrv < 0) { |
353 | 0fbfbb59 | Gleb Natapov | return 0; |
354 | 0fbfbb59 | Gleb Natapov | } |
355 | d592d303 | bellard | ppr = apic_get_ppr(s); |
356 | 0fbfbb59 | Gleb Natapov | if (ppr && (irrv & 0xf0) <= (ppr & 0xf0)) { |
357 | 0fbfbb59 | Gleb Natapov | return -1; |
358 | 0fbfbb59 | Gleb Natapov | } |
359 | 0fbfbb59 | Gleb Natapov | |
360 | 0fbfbb59 | Gleb Natapov | return irrv;
|
361 | 0fbfbb59 | Gleb Natapov | } |
362 | 0fbfbb59 | Gleb Natapov | |
363 | 0fbfbb59 | Gleb Natapov | /* signal the CPU if an irq is pending */
|
364 | dae01685 | Jan Kiszka | static void apic_update_irq(APICCommonState *s) |
365 | 0fbfbb59 | Gleb Natapov | { |
366 | c3affe56 | Andreas Färber | CPUState *cpu; |
367 | 60e82579 | Andreas Färber | |
368 | 0fbfbb59 | Gleb Natapov | if (!(s->spurious_vec & APIC_SV_ENABLE)) {
|
369 | 574bbf7b | bellard | return;
|
370 | 0fbfbb59 | Gleb Natapov | } |
371 | c3affe56 | Andreas Färber | cpu = CPU(s->cpu); |
372 | 60e82579 | Andreas Färber | if (!qemu_cpu_is_self(cpu)) {
|
373 | c3affe56 | Andreas Färber | cpu_interrupt(cpu, CPU_INTERRUPT_POLL); |
374 | 5d62c43a | Jan Kiszka | } else if (apic_irq_pending(s) > 0) { |
375 | c3affe56 | Andreas Färber | cpu_interrupt(cpu, CPU_INTERRUPT_HARD); |
376 | 0fbfbb59 | Gleb Natapov | } |
377 | 574bbf7b | bellard | } |
378 | 574bbf7b | bellard | |
379 | e5ad936b | Jan Kiszka | void apic_poll_irq(DeviceState *d)
|
380 | e5ad936b | Jan Kiszka | { |
381 | e5ad936b | Jan Kiszka | APICCommonState *s = APIC_COMMON(d); |
382 | e5ad936b | Jan Kiszka | |
383 | e5ad936b | Jan Kiszka | apic_sync_vapic(s, SYNC_FROM_VAPIC); |
384 | e5ad936b | Jan Kiszka | apic_update_irq(s); |
385 | e5ad936b | Jan Kiszka | } |
386 | e5ad936b | Jan Kiszka | |
387 | dae01685 | Jan Kiszka | static void apic_set_irq(APICCommonState *s, int vector_num, int trigger_mode) |
388 | 574bbf7b | bellard | { |
389 | edf9735e | Michael S. Tsirkin | apic_report_irq_delivered(!apic_get_bit(s->irr, vector_num)); |
390 | 73822ec8 | aliguori | |
391 | edf9735e | Michael S. Tsirkin | apic_set_bit(s->irr, vector_num); |
392 | 574bbf7b | bellard | if (trigger_mode)
|
393 | edf9735e | Michael S. Tsirkin | apic_set_bit(s->tmr, vector_num); |
394 | 574bbf7b | bellard | else
|
395 | edf9735e | Michael S. Tsirkin | apic_reset_bit(s->tmr, vector_num); |
396 | e5ad936b | Jan Kiszka | if (s->vapic_paddr) {
|
397 | e5ad936b | Jan Kiszka | apic_sync_vapic(s, SYNC_ISR_IRR_TO_VAPIC); |
398 | e5ad936b | Jan Kiszka | /*
|
399 | e5ad936b | Jan Kiszka | * The vcpu thread needs to see the new IRR before we pull its current
|
400 | e5ad936b | Jan Kiszka | * TPR value. That way, if we miss a lowering of the TRP, the guest
|
401 | e5ad936b | Jan Kiszka | * has the chance to notice the new IRR and poll for IRQs on its own.
|
402 | e5ad936b | Jan Kiszka | */
|
403 | e5ad936b | Jan Kiszka | smp_wmb(); |
404 | e5ad936b | Jan Kiszka | apic_sync_vapic(s, SYNC_FROM_VAPIC); |
405 | e5ad936b | Jan Kiszka | } |
406 | 574bbf7b | bellard | apic_update_irq(s); |
407 | 574bbf7b | bellard | } |
408 | 574bbf7b | bellard | |
409 | dae01685 | Jan Kiszka | static void apic_eoi(APICCommonState *s) |
410 | 574bbf7b | bellard | { |
411 | 574bbf7b | bellard | int isrv;
|
412 | 574bbf7b | bellard | isrv = get_highest_priority_int(s->isr); |
413 | 574bbf7b | bellard | if (isrv < 0) |
414 | 574bbf7b | bellard | return;
|
415 | edf9735e | Michael S. Tsirkin | apic_reset_bit(s->isr, isrv); |
416 | edf9735e | Michael S. Tsirkin | if (!(s->spurious_vec & APIC_SV_DIRECTED_IO) && apic_get_bit(s->tmr, isrv)) {
|
417 | 0280b571 | Jan Kiszka | ioapic_eoi_broadcast(isrv); |
418 | 0280b571 | Jan Kiszka | } |
419 | e5ad936b | Jan Kiszka | apic_sync_vapic(s, SYNC_FROM_VAPIC | SYNC_TO_VAPIC); |
420 | 574bbf7b | bellard | apic_update_irq(s); |
421 | 574bbf7b | bellard | } |
422 | 574bbf7b | bellard | |
423 | 678e12cc | Gleb Natapov | static int apic_find_dest(uint8_t dest) |
424 | 678e12cc | Gleb Natapov | { |
425 | dae01685 | Jan Kiszka | APICCommonState *apic = local_apics[dest]; |
426 | 678e12cc | Gleb Natapov | int i;
|
427 | 678e12cc | Gleb Natapov | |
428 | 678e12cc | Gleb Natapov | if (apic && apic->id == dest)
|
429 | 678e12cc | Gleb Natapov | return dest; /* shortcut in case apic->id == apic->idx */ |
430 | 678e12cc | Gleb Natapov | |
431 | 678e12cc | Gleb Natapov | for (i = 0; i < MAX_APICS; i++) { |
432 | 678e12cc | Gleb Natapov | apic = local_apics[i]; |
433 | 678e12cc | Gleb Natapov | if (apic && apic->id == dest)
|
434 | 678e12cc | Gleb Natapov | return i;
|
435 | b538e53e | Alex Williamson | if (!apic)
|
436 | b538e53e | Alex Williamson | break;
|
437 | 678e12cc | Gleb Natapov | } |
438 | 678e12cc | Gleb Natapov | |
439 | 678e12cc | Gleb Natapov | return -1; |
440 | 678e12cc | Gleb Natapov | } |
441 | 678e12cc | Gleb Natapov | |
442 | d3e9db93 | bellard | static void apic_get_delivery_bitmask(uint32_t *deliver_bitmask, |
443 | d3e9db93 | bellard | uint8_t dest, uint8_t dest_mode) |
444 | d592d303 | bellard | { |
445 | dae01685 | Jan Kiszka | APICCommonState *apic_iter; |
446 | d3e9db93 | bellard | int i;
|
447 | d592d303 | bellard | |
448 | d592d303 | bellard | if (dest_mode == 0) { |
449 | d3e9db93 | bellard | if (dest == 0xff) { |
450 | d3e9db93 | bellard | memset(deliver_bitmask, 0xff, MAX_APIC_WORDS * sizeof(uint32_t)); |
451 | d3e9db93 | bellard | } else {
|
452 | 678e12cc | Gleb Natapov | int idx = apic_find_dest(dest);
|
453 | d3e9db93 | bellard | memset(deliver_bitmask, 0x00, MAX_APIC_WORDS * sizeof(uint32_t)); |
454 | 678e12cc | Gleb Natapov | if (idx >= 0) |
455 | edf9735e | Michael S. Tsirkin | apic_set_bit(deliver_bitmask, idx); |
456 | d3e9db93 | bellard | } |
457 | d592d303 | bellard | } else {
|
458 | d592d303 | bellard | /* XXX: cluster mode */
|
459 | d3e9db93 | bellard | memset(deliver_bitmask, 0x00, MAX_APIC_WORDS * sizeof(uint32_t)); |
460 | d3e9db93 | bellard | for(i = 0; i < MAX_APICS; i++) { |
461 | d3e9db93 | bellard | apic_iter = local_apics[i]; |
462 | d3e9db93 | bellard | if (apic_iter) {
|
463 | d3e9db93 | bellard | if (apic_iter->dest_mode == 0xf) { |
464 | d3e9db93 | bellard | if (dest & apic_iter->log_dest)
|
465 | edf9735e | Michael S. Tsirkin | apic_set_bit(deliver_bitmask, i); |
466 | d3e9db93 | bellard | } else if (apic_iter->dest_mode == 0x0) { |
467 | d3e9db93 | bellard | if ((dest & 0xf0) == (apic_iter->log_dest & 0xf0) && |
468 | d3e9db93 | bellard | (dest & apic_iter->log_dest & 0x0f)) {
|
469 | edf9735e | Michael S. Tsirkin | apic_set_bit(deliver_bitmask, i); |
470 | d3e9db93 | bellard | } |
471 | d3e9db93 | bellard | } |
472 | b538e53e | Alex Williamson | } else {
|
473 | b538e53e | Alex Williamson | break;
|
474 | d3e9db93 | bellard | } |
475 | d592d303 | bellard | } |
476 | d592d303 | bellard | } |
477 | d592d303 | bellard | } |
478 | d592d303 | bellard | |
479 | dae01685 | Jan Kiszka | static void apic_startup(APICCommonState *s, int vector_num) |
480 | e0fd8781 | bellard | { |
481 | b09ea7d5 | Gleb Natapov | s->sipi_vector = vector_num; |
482 | c3affe56 | Andreas Färber | cpu_interrupt(CPU(s->cpu), CPU_INTERRUPT_SIPI); |
483 | b09ea7d5 | Gleb Natapov | } |
484 | b09ea7d5 | Gleb Natapov | |
485 | 92a16d7a | Blue Swirl | void apic_sipi(DeviceState *d)
|
486 | b09ea7d5 | Gleb Natapov | { |
487 | dae01685 | Jan Kiszka | APICCommonState *s = DO_UPCAST(APICCommonState, busdev.qdev, d); |
488 | 92a16d7a | Blue Swirl | |
489 | d8ed887b | Andreas Färber | cpu_reset_interrupt(CPU(s->cpu), CPU_INTERRUPT_SIPI); |
490 | b09ea7d5 | Gleb Natapov | |
491 | b09ea7d5 | Gleb Natapov | if (!s->wait_for_sipi)
|
492 | e0fd8781 | bellard | return;
|
493 | e9f9d6b1 | Andreas Färber | cpu_x86_load_seg_cache_sipi(s->cpu, s->sipi_vector); |
494 | b09ea7d5 | Gleb Natapov | s->wait_for_sipi = 0;
|
495 | e0fd8781 | bellard | } |
496 | e0fd8781 | bellard | |
497 | 92a16d7a | Blue Swirl | static void apic_deliver(DeviceState *d, uint8_t dest, uint8_t dest_mode, |
498 | d592d303 | bellard | uint8_t delivery_mode, uint8_t vector_num, |
499 | 1f6f408c | Jan Kiszka | uint8_t trigger_mode) |
500 | d592d303 | bellard | { |
501 | dae01685 | Jan Kiszka | APICCommonState *s = DO_UPCAST(APICCommonState, busdev.qdev, d); |
502 | d3e9db93 | bellard | uint32_t deliver_bitmask[MAX_APIC_WORDS]; |
503 | d592d303 | bellard | int dest_shorthand = (s->icr[0] >> 18) & 3; |
504 | dae01685 | Jan Kiszka | APICCommonState *apic_iter; |
505 | d592d303 | bellard | |
506 | e0fd8781 | bellard | switch (dest_shorthand) {
|
507 | d3e9db93 | bellard | case 0: |
508 | d3e9db93 | bellard | apic_get_delivery_bitmask(deliver_bitmask, dest, dest_mode); |
509 | d3e9db93 | bellard | break;
|
510 | d3e9db93 | bellard | case 1: |
511 | d3e9db93 | bellard | memset(deliver_bitmask, 0x00, sizeof(deliver_bitmask)); |
512 | edf9735e | Michael S. Tsirkin | apic_set_bit(deliver_bitmask, s->idx); |
513 | d3e9db93 | bellard | break;
|
514 | d3e9db93 | bellard | case 2: |
515 | d3e9db93 | bellard | memset(deliver_bitmask, 0xff, sizeof(deliver_bitmask)); |
516 | d3e9db93 | bellard | break;
|
517 | d3e9db93 | bellard | case 3: |
518 | d3e9db93 | bellard | memset(deliver_bitmask, 0xff, sizeof(deliver_bitmask)); |
519 | edf9735e | Michael S. Tsirkin | apic_reset_bit(deliver_bitmask, s->idx); |
520 | d3e9db93 | bellard | break;
|
521 | e0fd8781 | bellard | } |
522 | e0fd8781 | bellard | |
523 | d592d303 | bellard | switch (delivery_mode) {
|
524 | d592d303 | bellard | case APIC_DM_INIT:
|
525 | d592d303 | bellard | { |
526 | d592d303 | bellard | int trig_mode = (s->icr[0] >> 15) & 1; |
527 | d592d303 | bellard | int level = (s->icr[0] >> 14) & 1; |
528 | d592d303 | bellard | if (level == 0 && trig_mode == 1) { |
529 | 5fafdf24 | ths | foreach_apic(apic_iter, deliver_bitmask, |
530 | d3e9db93 | bellard | apic_iter->arb_id = apic_iter->id ); |
531 | d592d303 | bellard | return;
|
532 | d592d303 | bellard | } |
533 | d592d303 | bellard | } |
534 | d592d303 | bellard | break;
|
535 | d592d303 | bellard | |
536 | d592d303 | bellard | case APIC_DM_SIPI:
|
537 | 5fafdf24 | ths | foreach_apic(apic_iter, deliver_bitmask, |
538 | d3e9db93 | bellard | apic_startup(apic_iter, vector_num) ); |
539 | d592d303 | bellard | return;
|
540 | d592d303 | bellard | } |
541 | d592d303 | bellard | |
542 | 1f6f408c | Jan Kiszka | apic_bus_deliver(deliver_bitmask, delivery_mode, vector_num, trigger_mode); |
543 | d592d303 | bellard | } |
544 | d592d303 | bellard | |
545 | a94820dd | Jan Kiszka | static bool apic_check_pic(APICCommonState *s) |
546 | a94820dd | Jan Kiszka | { |
547 | a94820dd | Jan Kiszka | if (!apic_accept_pic_intr(&s->busdev.qdev) || !pic_get_output(isa_pic)) {
|
548 | a94820dd | Jan Kiszka | return false; |
549 | a94820dd | Jan Kiszka | } |
550 | a94820dd | Jan Kiszka | apic_deliver_pic_intr(&s->busdev.qdev, 1);
|
551 | a94820dd | Jan Kiszka | return true; |
552 | a94820dd | Jan Kiszka | } |
553 | a94820dd | Jan Kiszka | |
554 | 92a16d7a | Blue Swirl | int apic_get_interrupt(DeviceState *d)
|
555 | 574bbf7b | bellard | { |
556 | dae01685 | Jan Kiszka | APICCommonState *s = DO_UPCAST(APICCommonState, busdev.qdev, d); |
557 | 574bbf7b | bellard | int intno;
|
558 | 574bbf7b | bellard | |
559 | 574bbf7b | bellard | /* if the APIC is installed or enabled, we let the 8259 handle the
|
560 | 574bbf7b | bellard | IRQs */
|
561 | 574bbf7b | bellard | if (!s)
|
562 | 574bbf7b | bellard | return -1; |
563 | 574bbf7b | bellard | if (!(s->spurious_vec & APIC_SV_ENABLE))
|
564 | 574bbf7b | bellard | return -1; |
565 | 3b46e624 | ths | |
566 | e5ad936b | Jan Kiszka | apic_sync_vapic(s, SYNC_FROM_VAPIC); |
567 | 0fbfbb59 | Gleb Natapov | intno = apic_irq_pending(s); |
568 | 0fbfbb59 | Gleb Natapov | |
569 | 0fbfbb59 | Gleb Natapov | if (intno == 0) { |
570 | e5ad936b | Jan Kiszka | apic_sync_vapic(s, SYNC_TO_VAPIC); |
571 | 574bbf7b | bellard | return -1; |
572 | 0fbfbb59 | Gleb Natapov | } else if (intno < 0) { |
573 | e5ad936b | Jan Kiszka | apic_sync_vapic(s, SYNC_TO_VAPIC); |
574 | d592d303 | bellard | return s->spurious_vec & 0xff; |
575 | 0fbfbb59 | Gleb Natapov | } |
576 | edf9735e | Michael S. Tsirkin | apic_reset_bit(s->irr, intno); |
577 | edf9735e | Michael S. Tsirkin | apic_set_bit(s->isr, intno); |
578 | e5ad936b | Jan Kiszka | apic_sync_vapic(s, SYNC_TO_VAPIC); |
579 | 3db3659b | Jan Kiszka | |
580 | 3db3659b | Jan Kiszka | /* re-inject if there is still a pending PIC interrupt */
|
581 | a94820dd | Jan Kiszka | apic_check_pic(s); |
582 | 3db3659b | Jan Kiszka | |
583 | 574bbf7b | bellard | apic_update_irq(s); |
584 | 3db3659b | Jan Kiszka | |
585 | 574bbf7b | bellard | return intno;
|
586 | 574bbf7b | bellard | } |
587 | 574bbf7b | bellard | |
588 | 92a16d7a | Blue Swirl | int apic_accept_pic_intr(DeviceState *d)
|
589 | 0e21e12b | ths | { |
590 | dae01685 | Jan Kiszka | APICCommonState *s = DO_UPCAST(APICCommonState, busdev.qdev, d); |
591 | 0e21e12b | ths | uint32_t lvt0; |
592 | 0e21e12b | ths | |
593 | 0e21e12b | ths | if (!s)
|
594 | 0e21e12b | ths | return -1; |
595 | 0e21e12b | ths | |
596 | 0e21e12b | ths | lvt0 = s->lvt[APIC_LVT_LINT0]; |
597 | 0e21e12b | ths | |
598 | a5b38b51 | aurel32 | if ((s->apicbase & MSR_IA32_APICBASE_ENABLE) == 0 || |
599 | a5b38b51 | aurel32 | (lvt0 & APIC_LVT_MASKED) == 0)
|
600 | 0e21e12b | ths | return 1; |
601 | 0e21e12b | ths | |
602 | 0e21e12b | ths | return 0; |
603 | 0e21e12b | ths | } |
604 | 0e21e12b | ths | |
605 | dae01685 | Jan Kiszka | static uint32_t apic_get_current_count(APICCommonState *s)
|
606 | 574bbf7b | bellard | { |
607 | 574bbf7b | bellard | int64_t d; |
608 | 574bbf7b | bellard | uint32_t val; |
609 | 74475455 | Paolo Bonzini | d = (qemu_get_clock_ns(vm_clock) - s->initial_count_load_time) >> |
610 | 574bbf7b | bellard | s->count_shift; |
611 | 574bbf7b | bellard | if (s->lvt[APIC_LVT_TIMER] & APIC_LVT_TIMER_PERIODIC) {
|
612 | 574bbf7b | bellard | /* periodic */
|
613 | d592d303 | bellard | val = s->initial_count - (d % ((uint64_t)s->initial_count + 1));
|
614 | 574bbf7b | bellard | } else {
|
615 | 574bbf7b | bellard | if (d >= s->initial_count)
|
616 | 574bbf7b | bellard | val = 0;
|
617 | 574bbf7b | bellard | else
|
618 | 574bbf7b | bellard | val = s->initial_count - d; |
619 | 574bbf7b | bellard | } |
620 | 574bbf7b | bellard | return val;
|
621 | 574bbf7b | bellard | } |
622 | 574bbf7b | bellard | |
623 | dae01685 | Jan Kiszka | static void apic_timer_update(APICCommonState *s, int64_t current_time) |
624 | 574bbf7b | bellard | { |
625 | 7a380ca3 | Jan Kiszka | if (apic_next_timer(s, current_time)) {
|
626 | 7a380ca3 | Jan Kiszka | qemu_mod_timer(s->timer, s->next_time); |
627 | 574bbf7b | bellard | } else {
|
628 | 574bbf7b | bellard | qemu_del_timer(s->timer); |
629 | 574bbf7b | bellard | } |
630 | 574bbf7b | bellard | } |
631 | 574bbf7b | bellard | |
632 | 574bbf7b | bellard | static void apic_timer(void *opaque) |
633 | 574bbf7b | bellard | { |
634 | dae01685 | Jan Kiszka | APICCommonState *s = opaque; |
635 | 574bbf7b | bellard | |
636 | cf6d64bf | Blue Swirl | apic_local_deliver(s, APIC_LVT_TIMER); |
637 | 574bbf7b | bellard | apic_timer_update(s, s->next_time); |
638 | 574bbf7b | bellard | } |
639 | 574bbf7b | bellard | |
640 | a8170e5e | Avi Kivity | static uint32_t apic_mem_readb(void *opaque, hwaddr addr) |
641 | 574bbf7b | bellard | { |
642 | 574bbf7b | bellard | return 0; |
643 | 574bbf7b | bellard | } |
644 | 574bbf7b | bellard | |
645 | a8170e5e | Avi Kivity | static uint32_t apic_mem_readw(void *opaque, hwaddr addr) |
646 | 574bbf7b | bellard | { |
647 | 574bbf7b | bellard | return 0; |
648 | 574bbf7b | bellard | } |
649 | 574bbf7b | bellard | |
650 | a8170e5e | Avi Kivity | static void apic_mem_writeb(void *opaque, hwaddr addr, uint32_t val) |
651 | 574bbf7b | bellard | { |
652 | 574bbf7b | bellard | } |
653 | 574bbf7b | bellard | |
654 | a8170e5e | Avi Kivity | static void apic_mem_writew(void *opaque, hwaddr addr, uint32_t val) |
655 | 574bbf7b | bellard | { |
656 | 574bbf7b | bellard | } |
657 | 574bbf7b | bellard | |
658 | a8170e5e | Avi Kivity | static uint32_t apic_mem_readl(void *opaque, hwaddr addr) |
659 | 574bbf7b | bellard | { |
660 | 92a16d7a | Blue Swirl | DeviceState *d; |
661 | dae01685 | Jan Kiszka | APICCommonState *s; |
662 | 574bbf7b | bellard | uint32_t val; |
663 | 574bbf7b | bellard | int index;
|
664 | 574bbf7b | bellard | |
665 | 92a16d7a | Blue Swirl | d = cpu_get_current_apic(); |
666 | 92a16d7a | Blue Swirl | if (!d) {
|
667 | 574bbf7b | bellard | return 0; |
668 | 0e26b7b8 | Blue Swirl | } |
669 | dae01685 | Jan Kiszka | s = DO_UPCAST(APICCommonState, busdev.qdev, d); |
670 | 574bbf7b | bellard | |
671 | 574bbf7b | bellard | index = (addr >> 4) & 0xff; |
672 | 574bbf7b | bellard | switch(index) {
|
673 | 574bbf7b | bellard | case 0x02: /* id */ |
674 | 574bbf7b | bellard | val = s->id << 24;
|
675 | 574bbf7b | bellard | break;
|
676 | 574bbf7b | bellard | case 0x03: /* version */ |
677 | 574bbf7b | bellard | val = 0x11 | ((APIC_LVT_NB - 1) << 16); /* version 0x11 */ |
678 | 574bbf7b | bellard | break;
|
679 | 574bbf7b | bellard | case 0x08: |
680 | e5ad936b | Jan Kiszka | apic_sync_vapic(s, SYNC_FROM_VAPIC); |
681 | e5ad936b | Jan Kiszka | if (apic_report_tpr_access) {
|
682 | 60671e58 | Andreas Färber | cpu_report_tpr_access(&s->cpu->env, TPR_ACCESS_READ); |
683 | e5ad936b | Jan Kiszka | } |
684 | 574bbf7b | bellard | val = s->tpr; |
685 | 574bbf7b | bellard | break;
|
686 | d592d303 | bellard | case 0x09: |
687 | d592d303 | bellard | val = apic_get_arb_pri(s); |
688 | d592d303 | bellard | break;
|
689 | 574bbf7b | bellard | case 0x0a: |
690 | 574bbf7b | bellard | /* ppr */
|
691 | 574bbf7b | bellard | val = apic_get_ppr(s); |
692 | 574bbf7b | bellard | break;
|
693 | b237db36 | aurel32 | case 0x0b: |
694 | b237db36 | aurel32 | val = 0;
|
695 | b237db36 | aurel32 | break;
|
696 | d592d303 | bellard | case 0x0d: |
697 | d592d303 | bellard | val = s->log_dest << 24;
|
698 | d592d303 | bellard | break;
|
699 | d592d303 | bellard | case 0x0e: |
700 | d592d303 | bellard | val = s->dest_mode << 28;
|
701 | d592d303 | bellard | break;
|
702 | 574bbf7b | bellard | case 0x0f: |
703 | 574bbf7b | bellard | val = s->spurious_vec; |
704 | 574bbf7b | bellard | break;
|
705 | 574bbf7b | bellard | case 0x10 ... 0x17: |
706 | 574bbf7b | bellard | val = s->isr[index & 7];
|
707 | 574bbf7b | bellard | break;
|
708 | 574bbf7b | bellard | case 0x18 ... 0x1f: |
709 | 574bbf7b | bellard | val = s->tmr[index & 7];
|
710 | 574bbf7b | bellard | break;
|
711 | 574bbf7b | bellard | case 0x20 ... 0x27: |
712 | 574bbf7b | bellard | val = s->irr[index & 7];
|
713 | 574bbf7b | bellard | break;
|
714 | 574bbf7b | bellard | case 0x28: |
715 | 574bbf7b | bellard | val = s->esr; |
716 | 574bbf7b | bellard | break;
|
717 | 574bbf7b | bellard | case 0x30: |
718 | 574bbf7b | bellard | case 0x31: |
719 | 574bbf7b | bellard | val = s->icr[index & 1];
|
720 | 574bbf7b | bellard | break;
|
721 | e0fd8781 | bellard | case 0x32 ... 0x37: |
722 | e0fd8781 | bellard | val = s->lvt[index - 0x32];
|
723 | e0fd8781 | bellard | break;
|
724 | 574bbf7b | bellard | case 0x38: |
725 | 574bbf7b | bellard | val = s->initial_count; |
726 | 574bbf7b | bellard | break;
|
727 | 574bbf7b | bellard | case 0x39: |
728 | 574bbf7b | bellard | val = apic_get_current_count(s); |
729 | 574bbf7b | bellard | break;
|
730 | 574bbf7b | bellard | case 0x3e: |
731 | 574bbf7b | bellard | val = s->divide_conf; |
732 | 574bbf7b | bellard | break;
|
733 | 574bbf7b | bellard | default:
|
734 | 574bbf7b | bellard | s->esr |= ESR_ILLEGAL_ADDRESS; |
735 | 574bbf7b | bellard | val = 0;
|
736 | 574bbf7b | bellard | break;
|
737 | 574bbf7b | bellard | } |
738 | d8023f31 | Blue Swirl | trace_apic_mem_readl(addr, val); |
739 | 574bbf7b | bellard | return val;
|
740 | 574bbf7b | bellard | } |
741 | 574bbf7b | bellard | |
742 | a8170e5e | Avi Kivity | static void apic_send_msi(hwaddr addr, uint32_t data) |
743 | 54c96da7 | Michael S. Tsirkin | { |
744 | 54c96da7 | Michael S. Tsirkin | uint8_t dest = (addr & MSI_ADDR_DEST_ID_MASK) >> MSI_ADDR_DEST_ID_SHIFT; |
745 | 54c96da7 | Michael S. Tsirkin | uint8_t vector = (data & MSI_DATA_VECTOR_MASK) >> MSI_DATA_VECTOR_SHIFT; |
746 | 54c96da7 | Michael S. Tsirkin | uint8_t dest_mode = (addr >> MSI_ADDR_DEST_MODE_SHIFT) & 0x1;
|
747 | 54c96da7 | Michael S. Tsirkin | uint8_t trigger_mode = (data >> MSI_DATA_TRIGGER_SHIFT) & 0x1;
|
748 | 54c96da7 | Michael S. Tsirkin | uint8_t delivery = (data >> MSI_DATA_DELIVERY_MODE_SHIFT) & 0x7;
|
749 | 54c96da7 | Michael S. Tsirkin | /* XXX: Ignore redirection hint. */
|
750 | 1f6f408c | Jan Kiszka | apic_deliver_irq(dest, dest_mode, delivery, vector, trigger_mode); |
751 | 54c96da7 | Michael S. Tsirkin | } |
752 | 54c96da7 | Michael S. Tsirkin | |
753 | a8170e5e | Avi Kivity | static void apic_mem_writel(void *opaque, hwaddr addr, uint32_t val) |
754 | 574bbf7b | bellard | { |
755 | 92a16d7a | Blue Swirl | DeviceState *d; |
756 | dae01685 | Jan Kiszka | APICCommonState *s; |
757 | 54c96da7 | Michael S. Tsirkin | int index = (addr >> 4) & 0xff; |
758 | 54c96da7 | Michael S. Tsirkin | if (addr > 0xfff || !index) { |
759 | 54c96da7 | Michael S. Tsirkin | /* MSI and MMIO APIC are at the same memory location,
|
760 | 54c96da7 | Michael S. Tsirkin | * but actually not on the global bus: MSI is on PCI bus
|
761 | 54c96da7 | Michael S. Tsirkin | * APIC is connected directly to the CPU.
|
762 | 54c96da7 | Michael S. Tsirkin | * Mapping them on the global bus happens to work because
|
763 | 54c96da7 | Michael S. Tsirkin | * MSI registers are reserved in APIC MMIO and vice versa. */
|
764 | 54c96da7 | Michael S. Tsirkin | apic_send_msi(addr, val); |
765 | 54c96da7 | Michael S. Tsirkin | return;
|
766 | 54c96da7 | Michael S. Tsirkin | } |
767 | 574bbf7b | bellard | |
768 | 92a16d7a | Blue Swirl | d = cpu_get_current_apic(); |
769 | 92a16d7a | Blue Swirl | if (!d) {
|
770 | 574bbf7b | bellard | return;
|
771 | 0e26b7b8 | Blue Swirl | } |
772 | dae01685 | Jan Kiszka | s = DO_UPCAST(APICCommonState, busdev.qdev, d); |
773 | 574bbf7b | bellard | |
774 | d8023f31 | Blue Swirl | trace_apic_mem_writel(addr, val); |
775 | 574bbf7b | bellard | |
776 | 574bbf7b | bellard | switch(index) {
|
777 | 574bbf7b | bellard | case 0x02: |
778 | 574bbf7b | bellard | s->id = (val >> 24);
|
779 | 574bbf7b | bellard | break;
|
780 | e0fd8781 | bellard | case 0x03: |
781 | e0fd8781 | bellard | break;
|
782 | 574bbf7b | bellard | case 0x08: |
783 | e5ad936b | Jan Kiszka | if (apic_report_tpr_access) {
|
784 | 60671e58 | Andreas Färber | cpu_report_tpr_access(&s->cpu->env, TPR_ACCESS_WRITE); |
785 | e5ad936b | Jan Kiszka | } |
786 | 574bbf7b | bellard | s->tpr = val; |
787 | e5ad936b | Jan Kiszka | apic_sync_vapic(s, SYNC_TO_VAPIC); |
788 | d592d303 | bellard | apic_update_irq(s); |
789 | 574bbf7b | bellard | break;
|
790 | e0fd8781 | bellard | case 0x09: |
791 | e0fd8781 | bellard | case 0x0a: |
792 | e0fd8781 | bellard | break;
|
793 | 574bbf7b | bellard | case 0x0b: /* EOI */ |
794 | 574bbf7b | bellard | apic_eoi(s); |
795 | 574bbf7b | bellard | break;
|
796 | d592d303 | bellard | case 0x0d: |
797 | d592d303 | bellard | s->log_dest = val >> 24;
|
798 | d592d303 | bellard | break;
|
799 | d592d303 | bellard | case 0x0e: |
800 | d592d303 | bellard | s->dest_mode = val >> 28;
|
801 | d592d303 | bellard | break;
|
802 | 574bbf7b | bellard | case 0x0f: |
803 | 574bbf7b | bellard | s->spurious_vec = val & 0x1ff;
|
804 | d592d303 | bellard | apic_update_irq(s); |
805 | 574bbf7b | bellard | break;
|
806 | e0fd8781 | bellard | case 0x10 ... 0x17: |
807 | e0fd8781 | bellard | case 0x18 ... 0x1f: |
808 | e0fd8781 | bellard | case 0x20 ... 0x27: |
809 | e0fd8781 | bellard | case 0x28: |
810 | e0fd8781 | bellard | break;
|
811 | 574bbf7b | bellard | case 0x30: |
812 | d592d303 | bellard | s->icr[0] = val;
|
813 | 92a16d7a | Blue Swirl | apic_deliver(d, (s->icr[1] >> 24) & 0xff, (s->icr[0] >> 11) & 1, |
814 | d592d303 | bellard | (s->icr[0] >> 8) & 7, (s->icr[0] & 0xff), |
815 | 1f6f408c | Jan Kiszka | (s->icr[0] >> 15) & 1); |
816 | d592d303 | bellard | break;
|
817 | 574bbf7b | bellard | case 0x31: |
818 | d592d303 | bellard | s->icr[1] = val;
|
819 | 574bbf7b | bellard | break;
|
820 | 574bbf7b | bellard | case 0x32 ... 0x37: |
821 | 574bbf7b | bellard | { |
822 | 574bbf7b | bellard | int n = index - 0x32; |
823 | 574bbf7b | bellard | s->lvt[n] = val; |
824 | a94820dd | Jan Kiszka | if (n == APIC_LVT_TIMER) {
|
825 | 74475455 | Paolo Bonzini | apic_timer_update(s, qemu_get_clock_ns(vm_clock)); |
826 | a94820dd | Jan Kiszka | } else if (n == APIC_LVT_LINT0 && apic_check_pic(s)) { |
827 | a94820dd | Jan Kiszka | apic_update_irq(s); |
828 | a94820dd | Jan Kiszka | } |
829 | 574bbf7b | bellard | } |
830 | 574bbf7b | bellard | break;
|
831 | 574bbf7b | bellard | case 0x38: |
832 | 574bbf7b | bellard | s->initial_count = val; |
833 | 74475455 | Paolo Bonzini | s->initial_count_load_time = qemu_get_clock_ns(vm_clock); |
834 | 574bbf7b | bellard | apic_timer_update(s, s->initial_count_load_time); |
835 | 574bbf7b | bellard | break;
|
836 | e0fd8781 | bellard | case 0x39: |
837 | e0fd8781 | bellard | break;
|
838 | 574bbf7b | bellard | case 0x3e: |
839 | 574bbf7b | bellard | { |
840 | 574bbf7b | bellard | int v;
|
841 | 574bbf7b | bellard | s->divide_conf = val & 0xb;
|
842 | 574bbf7b | bellard | v = (s->divide_conf & 3) | ((s->divide_conf >> 1) & 4); |
843 | 574bbf7b | bellard | s->count_shift = (v + 1) & 7; |
844 | 574bbf7b | bellard | } |
845 | 574bbf7b | bellard | break;
|
846 | 574bbf7b | bellard | default:
|
847 | 574bbf7b | bellard | s->esr |= ESR_ILLEGAL_ADDRESS; |
848 | 574bbf7b | bellard | break;
|
849 | 574bbf7b | bellard | } |
850 | 574bbf7b | bellard | } |
851 | 574bbf7b | bellard | |
852 | e5ad936b | Jan Kiszka | static void apic_pre_save(APICCommonState *s) |
853 | e5ad936b | Jan Kiszka | { |
854 | e5ad936b | Jan Kiszka | apic_sync_vapic(s, SYNC_FROM_VAPIC); |
855 | e5ad936b | Jan Kiszka | } |
856 | e5ad936b | Jan Kiszka | |
857 | 7a380ca3 | Jan Kiszka | static void apic_post_load(APICCommonState *s) |
858 | 7a380ca3 | Jan Kiszka | { |
859 | 7a380ca3 | Jan Kiszka | if (s->timer_expiry != -1) { |
860 | 7a380ca3 | Jan Kiszka | qemu_mod_timer(s->timer, s->timer_expiry); |
861 | 7a380ca3 | Jan Kiszka | } else {
|
862 | 7a380ca3 | Jan Kiszka | qemu_del_timer(s->timer); |
863 | 7a380ca3 | Jan Kiszka | } |
864 | 7a380ca3 | Jan Kiszka | } |
865 | 7a380ca3 | Jan Kiszka | |
866 | 312b4234 | Avi Kivity | static const MemoryRegionOps apic_io_ops = { |
867 | 312b4234 | Avi Kivity | .old_mmio = { |
868 | 312b4234 | Avi Kivity | .read = { apic_mem_readb, apic_mem_readw, apic_mem_readl, }, |
869 | 312b4234 | Avi Kivity | .write = { apic_mem_writeb, apic_mem_writew, apic_mem_writel, }, |
870 | 312b4234 | Avi Kivity | }, |
871 | 312b4234 | Avi Kivity | .endianness = DEVICE_NATIVE_ENDIAN, |
872 | 574bbf7b | bellard | }; |
873 | 574bbf7b | bellard | |
874 | dae01685 | Jan Kiszka | static void apic_init(APICCommonState *s) |
875 | 8546b099 | Blue Swirl | { |
876 | dae01685 | Jan Kiszka | memory_region_init_io(&s->io_memory, &apic_io_ops, s, "apic-msi",
|
877 | baaeda08 | Igor Mammedov | APIC_SPACE_SIZE); |
878 | 8546b099 | Blue Swirl | |
879 | 74475455 | Paolo Bonzini | s->timer = qemu_new_timer_ns(vm_clock, apic_timer, s); |
880 | 8546b099 | Blue Swirl | local_apics[s->idx] = s; |
881 | 08a82ac0 | Jan Kiszka | |
882 | 08a82ac0 | Jan Kiszka | msi_supported = true;
|
883 | 8546b099 | Blue Swirl | } |
884 | 8546b099 | Blue Swirl | |
885 | 999e12bb | Anthony Liguori | static void apic_class_init(ObjectClass *klass, void *data) |
886 | 999e12bb | Anthony Liguori | { |
887 | 999e12bb | Anthony Liguori | APICCommonClass *k = APIC_COMMON_CLASS(klass); |
888 | 999e12bb | Anthony Liguori | |
889 | 999e12bb | Anthony Liguori | k->init = apic_init; |
890 | 999e12bb | Anthony Liguori | k->set_base = apic_set_base; |
891 | 999e12bb | Anthony Liguori | k->set_tpr = apic_set_tpr; |
892 | e5ad936b | Jan Kiszka | k->get_tpr = apic_get_tpr; |
893 | e5ad936b | Jan Kiszka | k->vapic_base_update = apic_vapic_base_update; |
894 | 999e12bb | Anthony Liguori | k->external_nmi = apic_external_nmi; |
895 | e5ad936b | Jan Kiszka | k->pre_save = apic_pre_save; |
896 | 999e12bb | Anthony Liguori | k->post_load = apic_post_load; |
897 | 999e12bb | Anthony Liguori | } |
898 | 999e12bb | Anthony Liguori | |
899 | 8c43a6f0 | Andreas Färber | static const TypeInfo apic_info = { |
900 | 39bffca2 | Anthony Liguori | .name = "apic",
|
901 | 39bffca2 | Anthony Liguori | .instance_size = sizeof(APICCommonState),
|
902 | 39bffca2 | Anthony Liguori | .parent = TYPE_APIC_COMMON, |
903 | 39bffca2 | Anthony Liguori | .class_init = apic_class_init, |
904 | 8546b099 | Blue Swirl | }; |
905 | 8546b099 | Blue Swirl | |
906 | 83f7d43a | Andreas Färber | static void apic_register_types(void) |
907 | 8546b099 | Blue Swirl | { |
908 | 39bffca2 | Anthony Liguori | type_register_static(&apic_info); |
909 | 8546b099 | Blue Swirl | } |
910 | 8546b099 | Blue Swirl | |
911 | 83f7d43a | Andreas Färber | type_init(apic_register_types) |