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1 | 610626af | aliguori | /*
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2 | 610626af | aliguori | * ioapic.c IOAPIC emulation logic
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3 | 610626af | aliguori | *
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4 | 610626af | aliguori | * Copyright (c) 2004-2005 Fabrice Bellard
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5 | 610626af | aliguori | *
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6 | 610626af | aliguori | * Split the ioapic logic from apic.c
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7 | 610626af | aliguori | * Xiantao Zhang <xiantao.zhang@intel.com>
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8 | 610626af | aliguori | *
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9 | 610626af | aliguori | * This library is free software; you can redistribute it and/or
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10 | 610626af | aliguori | * modify it under the terms of the GNU Lesser General Public
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11 | 610626af | aliguori | * License as published by the Free Software Foundation; either
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12 | 610626af | aliguori | * version 2 of the License, or (at your option) any later version.
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13 | 610626af | aliguori | *
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14 | 610626af | aliguori | * This library is distributed in the hope that it will be useful,
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15 | 610626af | aliguori | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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16 | 610626af | aliguori | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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17 | 610626af | aliguori | * Lesser General Public License for more details.
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18 | 610626af | aliguori | *
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19 | 610626af | aliguori | * You should have received a copy of the GNU Lesser General Public
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20 | 8167ee88 | Blue Swirl | * License along with this library; if not, see <http://www.gnu.org/licenses/>.
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21 | 610626af | aliguori | */
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22 | 610626af | aliguori | |
23 | 610626af | aliguori | #include "hw.h" |
24 | 610626af | aliguori | #include "pc.h" |
25 | aa28b9bf | Blue Swirl | #include "apic.h" |
26 | 0280b571 | Jan Kiszka | #include "ioapic.h" |
27 | 610626af | aliguori | #include "qemu-timer.h" |
28 | 610626af | aliguori | #include "host-utils.h" |
29 | 96051119 | Blue Swirl | #include "sysbus.h" |
30 | 610626af | aliguori | |
31 | 610626af | aliguori | //#define DEBUG_IOAPIC
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32 | 610626af | aliguori | |
33 | 9af9b330 | Blue Swirl | #ifdef DEBUG_IOAPIC
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34 | 9af9b330 | Blue Swirl | #define DPRINTF(fmt, ...) \
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35 | 9af9b330 | Blue Swirl | do { printf("ioapic: " fmt , ## __VA_ARGS__); } while (0) |
36 | 9af9b330 | Blue Swirl | #else
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37 | 9af9b330 | Blue Swirl | #define DPRINTF(fmt, ...)
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38 | 9af9b330 | Blue Swirl | #endif
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39 | 9af9b330 | Blue Swirl | |
40 | 0280b571 | Jan Kiszka | #define MAX_IOAPICS 1 |
41 | 0280b571 | Jan Kiszka | |
42 | 1f5e71a8 | Jan Kiszka | #define IOAPIC_VERSION 0x11 |
43 | 610626af | aliguori | |
44 | 1f5e71a8 | Jan Kiszka | #define IOAPIC_LVT_DEST_SHIFT 56 |
45 | 1f5e71a8 | Jan Kiszka | #define IOAPIC_LVT_MASKED_SHIFT 16 |
46 | 1f5e71a8 | Jan Kiszka | #define IOAPIC_LVT_TRIGGER_MODE_SHIFT 15 |
47 | 1f5e71a8 | Jan Kiszka | #define IOAPIC_LVT_REMOTE_IRR_SHIFT 14 |
48 | 1f5e71a8 | Jan Kiszka | #define IOAPIC_LVT_POLARITY_SHIFT 13 |
49 | 1f5e71a8 | Jan Kiszka | #define IOAPIC_LVT_DELIV_STATUS_SHIFT 12 |
50 | 1f5e71a8 | Jan Kiszka | #define IOAPIC_LVT_DEST_MODE_SHIFT 11 |
51 | 1f5e71a8 | Jan Kiszka | #define IOAPIC_LVT_DELIV_MODE_SHIFT 8 |
52 | 1f5e71a8 | Jan Kiszka | |
53 | 1f5e71a8 | Jan Kiszka | #define IOAPIC_LVT_MASKED (1 << IOAPIC_LVT_MASKED_SHIFT) |
54 | 1f5e71a8 | Jan Kiszka | #define IOAPIC_LVT_REMOTE_IRR (1 << IOAPIC_LVT_REMOTE_IRR_SHIFT) |
55 | 1f5e71a8 | Jan Kiszka | |
56 | 1f5e71a8 | Jan Kiszka | #define IOAPIC_TRIGGER_EDGE 0 |
57 | 1f5e71a8 | Jan Kiszka | #define IOAPIC_TRIGGER_LEVEL 1 |
58 | 610626af | aliguori | |
59 | 610626af | aliguori | /*io{apic,sapic} delivery mode*/
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60 | 1f5e71a8 | Jan Kiszka | #define IOAPIC_DM_FIXED 0x0 |
61 | 1f5e71a8 | Jan Kiszka | #define IOAPIC_DM_LOWEST_PRIORITY 0x1 |
62 | 1f5e71a8 | Jan Kiszka | #define IOAPIC_DM_PMI 0x2 |
63 | 1f5e71a8 | Jan Kiszka | #define IOAPIC_DM_NMI 0x4 |
64 | 1f5e71a8 | Jan Kiszka | #define IOAPIC_DM_INIT 0x5 |
65 | 1f5e71a8 | Jan Kiszka | #define IOAPIC_DM_SIPI 0x6 |
66 | 1f5e71a8 | Jan Kiszka | #define IOAPIC_DM_EXTINT 0x7 |
67 | 1f5e71a8 | Jan Kiszka | #define IOAPIC_DM_MASK 0x7 |
68 | 1f5e71a8 | Jan Kiszka | |
69 | 1f5e71a8 | Jan Kiszka | #define IOAPIC_VECTOR_MASK 0xff |
70 | 1f5e71a8 | Jan Kiszka | |
71 | 1f5e71a8 | Jan Kiszka | #define IOAPIC_IOREGSEL 0x00 |
72 | 1f5e71a8 | Jan Kiszka | #define IOAPIC_IOWIN 0x10 |
73 | 1f5e71a8 | Jan Kiszka | |
74 | 1f5e71a8 | Jan Kiszka | #define IOAPIC_REG_ID 0x00 |
75 | 1f5e71a8 | Jan Kiszka | #define IOAPIC_REG_VER 0x01 |
76 | 1f5e71a8 | Jan Kiszka | #define IOAPIC_REG_ARB 0x02 |
77 | 1f5e71a8 | Jan Kiszka | #define IOAPIC_REG_REDTBL_BASE 0x10 |
78 | 1f5e71a8 | Jan Kiszka | #define IOAPIC_ID 0x00 |
79 | 1f5e71a8 | Jan Kiszka | |
80 | 1f5e71a8 | Jan Kiszka | #define IOAPIC_ID_SHIFT 24 |
81 | 1f5e71a8 | Jan Kiszka | #define IOAPIC_ID_MASK 0xf |
82 | 1f5e71a8 | Jan Kiszka | |
83 | 1f5e71a8 | Jan Kiszka | #define IOAPIC_VER_ENTRIES_SHIFT 16 |
84 | 610626af | aliguori | |
85 | 96051119 | Blue Swirl | typedef struct IOAPICState IOAPICState; |
86 | 96051119 | Blue Swirl | |
87 | 610626af | aliguori | struct IOAPICState {
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88 | 96051119 | Blue Swirl | SysBusDevice busdev; |
89 | 610626af | aliguori | uint8_t id; |
90 | 610626af | aliguori | uint8_t ioregsel; |
91 | 610626af | aliguori | uint32_t irr; |
92 | 610626af | aliguori | uint64_t ioredtbl[IOAPIC_NUM_PINS]; |
93 | 610626af | aliguori | }; |
94 | 610626af | aliguori | |
95 | 0280b571 | Jan Kiszka | static IOAPICState *ioapics[MAX_IOAPICS];
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96 | 0280b571 | Jan Kiszka | |
97 | 610626af | aliguori | static void ioapic_service(IOAPICState *s) |
98 | 610626af | aliguori | { |
99 | 610626af | aliguori | uint8_t i; |
100 | 610626af | aliguori | uint8_t trig_mode; |
101 | 610626af | aliguori | uint8_t vector; |
102 | 610626af | aliguori | uint8_t delivery_mode; |
103 | 610626af | aliguori | uint32_t mask; |
104 | 610626af | aliguori | uint64_t entry; |
105 | 610626af | aliguori | uint8_t dest; |
106 | 610626af | aliguori | uint8_t dest_mode; |
107 | 610626af | aliguori | uint8_t polarity; |
108 | 610626af | aliguori | |
109 | 610626af | aliguori | for (i = 0; i < IOAPIC_NUM_PINS; i++) { |
110 | 610626af | aliguori | mask = 1 << i;
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111 | 610626af | aliguori | if (s->irr & mask) {
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112 | 610626af | aliguori | entry = s->ioredtbl[i]; |
113 | 610626af | aliguori | if (!(entry & IOAPIC_LVT_MASKED)) {
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114 | 1f5e71a8 | Jan Kiszka | trig_mode = ((entry >> IOAPIC_LVT_TRIGGER_MODE_SHIFT) & 1);
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115 | 1f5e71a8 | Jan Kiszka | dest = entry >> IOAPIC_LVT_DEST_SHIFT; |
116 | 1f5e71a8 | Jan Kiszka | dest_mode = (entry >> IOAPIC_LVT_DEST_MODE_SHIFT) & 1;
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117 | 1f5e71a8 | Jan Kiszka | delivery_mode = |
118 | 1f5e71a8 | Jan Kiszka | (entry >> IOAPIC_LVT_DELIV_MODE_SHIFT) & IOAPIC_DM_MASK; |
119 | 1f5e71a8 | Jan Kiszka | polarity = (entry >> IOAPIC_LVT_POLARITY_SHIFT) & 1;
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120 | 0280b571 | Jan Kiszka | if (trig_mode == IOAPIC_TRIGGER_EDGE) {
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121 | 610626af | aliguori | s->irr &= ~mask; |
122 | 0280b571 | Jan Kiszka | } else {
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123 | 0280b571 | Jan Kiszka | s->ioredtbl[i] |= IOAPIC_LVT_REMOTE_IRR; |
124 | 0280b571 | Jan Kiszka | } |
125 | 1f5e71a8 | Jan Kiszka | if (delivery_mode == IOAPIC_DM_EXTINT) {
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126 | 610626af | aliguori | vector = pic_read_irq(isa_pic); |
127 | 1f5e71a8 | Jan Kiszka | } else {
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128 | 1f5e71a8 | Jan Kiszka | vector = entry & IOAPIC_VECTOR_MASK; |
129 | 1f5e71a8 | Jan Kiszka | } |
130 | 610626af | aliguori | apic_deliver_irq(dest, dest_mode, delivery_mode, |
131 | 610626af | aliguori | vector, polarity, trig_mode); |
132 | 610626af | aliguori | } |
133 | 610626af | aliguori | } |
134 | 610626af | aliguori | } |
135 | 610626af | aliguori | } |
136 | 610626af | aliguori | |
137 | 7d0500c4 | Blue Swirl | static void ioapic_set_irq(void *opaque, int vector, int level) |
138 | 610626af | aliguori | { |
139 | 610626af | aliguori | IOAPICState *s = opaque; |
140 | 610626af | aliguori | |
141 | 610626af | aliguori | /* ISA IRQs map to GSI 1-1 except for IRQ0 which maps
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142 | 610626af | aliguori | * to GSI 2. GSI maps to ioapic 1-1. This is not
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143 | 610626af | aliguori | * the cleanest way of doing it but it should work. */
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144 | 610626af | aliguori | |
145 | 1f5e71a8 | Jan Kiszka | DPRINTF("%s: %s vec %x\n", __func__, level ? "raise" : "lower", vector); |
146 | 1f5e71a8 | Jan Kiszka | if (vector == 0) { |
147 | 610626af | aliguori | vector = 2;
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148 | 1f5e71a8 | Jan Kiszka | } |
149 | 610626af | aliguori | if (vector >= 0 && vector < IOAPIC_NUM_PINS) { |
150 | 610626af | aliguori | uint32_t mask = 1 << vector;
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151 | 610626af | aliguori | uint64_t entry = s->ioredtbl[vector]; |
152 | 610626af | aliguori | |
153 | 1f5e71a8 | Jan Kiszka | if (((entry >> IOAPIC_LVT_TRIGGER_MODE_SHIFT) & 1) == |
154 | 1f5e71a8 | Jan Kiszka | IOAPIC_TRIGGER_LEVEL) { |
155 | 610626af | aliguori | /* level triggered */
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156 | 610626af | aliguori | if (level) {
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157 | 610626af | aliguori | s->irr |= mask; |
158 | 610626af | aliguori | ioapic_service(s); |
159 | 610626af | aliguori | } else {
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160 | 610626af | aliguori | s->irr &= ~mask; |
161 | 610626af | aliguori | } |
162 | 610626af | aliguori | } else {
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163 | 610626af | aliguori | /* edge triggered */
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164 | 610626af | aliguori | if (level) {
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165 | 610626af | aliguori | s->irr |= mask; |
166 | 610626af | aliguori | ioapic_service(s); |
167 | 610626af | aliguori | } |
168 | 610626af | aliguori | } |
169 | 610626af | aliguori | } |
170 | 610626af | aliguori | } |
171 | 610626af | aliguori | |
172 | 0280b571 | Jan Kiszka | void ioapic_eoi_broadcast(int vector) |
173 | 0280b571 | Jan Kiszka | { |
174 | 0280b571 | Jan Kiszka | IOAPICState *s; |
175 | 0280b571 | Jan Kiszka | uint64_t entry; |
176 | 0280b571 | Jan Kiszka | int i, n;
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177 | 0280b571 | Jan Kiszka | |
178 | 0280b571 | Jan Kiszka | for (i = 0; i < MAX_IOAPICS; i++) { |
179 | 0280b571 | Jan Kiszka | s = ioapics[i]; |
180 | 0280b571 | Jan Kiszka | if (!s) {
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181 | 0280b571 | Jan Kiszka | continue;
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182 | 0280b571 | Jan Kiszka | } |
183 | 0280b571 | Jan Kiszka | for (n = 0; n < IOAPIC_NUM_PINS; n++) { |
184 | 0280b571 | Jan Kiszka | entry = s->ioredtbl[n]; |
185 | 1f5e71a8 | Jan Kiszka | if ((entry & IOAPIC_LVT_REMOTE_IRR)
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186 | 1f5e71a8 | Jan Kiszka | && (entry & IOAPIC_VECTOR_MASK) == vector) { |
187 | 0280b571 | Jan Kiszka | s->ioredtbl[n] = entry & ~IOAPIC_LVT_REMOTE_IRR; |
188 | 0280b571 | Jan Kiszka | if (!(entry & IOAPIC_LVT_MASKED) && (s->irr & (1 << n))) { |
189 | 0280b571 | Jan Kiszka | ioapic_service(s); |
190 | 0280b571 | Jan Kiszka | } |
191 | 0280b571 | Jan Kiszka | } |
192 | 0280b571 | Jan Kiszka | } |
193 | 0280b571 | Jan Kiszka | } |
194 | 0280b571 | Jan Kiszka | } |
195 | 0280b571 | Jan Kiszka | |
196 | c227f099 | Anthony Liguori | static uint32_t ioapic_mem_readl(void *opaque, target_phys_addr_t addr) |
197 | 610626af | aliguori | { |
198 | 610626af | aliguori | IOAPICState *s = opaque; |
199 | 610626af | aliguori | int index;
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200 | 610626af | aliguori | uint32_t val = 0;
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201 | 610626af | aliguori | |
202 | 1f5e71a8 | Jan Kiszka | switch (addr & 0xff) { |
203 | 1f5e71a8 | Jan Kiszka | case IOAPIC_IOREGSEL:
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204 | 610626af | aliguori | val = s->ioregsel; |
205 | 1f5e71a8 | Jan Kiszka | break;
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206 | 1f5e71a8 | Jan Kiszka | case IOAPIC_IOWIN:
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207 | 610626af | aliguori | switch (s->ioregsel) {
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208 | 1f5e71a8 | Jan Kiszka | case IOAPIC_REG_ID:
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209 | 1f5e71a8 | Jan Kiszka | val = s->id << IOAPIC_ID_SHIFT; |
210 | 1f5e71a8 | Jan Kiszka | break;
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211 | 1f5e71a8 | Jan Kiszka | case IOAPIC_REG_VER:
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212 | 1f5e71a8 | Jan Kiszka | val = IOAPIC_VERSION | |
213 | 1f5e71a8 | Jan Kiszka | ((IOAPIC_NUM_PINS - 1) << IOAPIC_VER_ENTRIES_SHIFT);
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214 | 1f5e71a8 | Jan Kiszka | break;
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215 | 1f5e71a8 | Jan Kiszka | case IOAPIC_REG_ARB:
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216 | 1f5e71a8 | Jan Kiszka | val = 0;
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217 | 1f5e71a8 | Jan Kiszka | break;
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218 | 1f5e71a8 | Jan Kiszka | default:
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219 | 1f5e71a8 | Jan Kiszka | index = (s->ioregsel - IOAPIC_REG_REDTBL_BASE) >> 1;
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220 | 1f5e71a8 | Jan Kiszka | if (index >= 0 && index < IOAPIC_NUM_PINS) { |
221 | 1f5e71a8 | Jan Kiszka | if (s->ioregsel & 1) { |
222 | 1f5e71a8 | Jan Kiszka | val = s->ioredtbl[index] >> 32;
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223 | 1f5e71a8 | Jan Kiszka | } else {
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224 | 1f5e71a8 | Jan Kiszka | val = s->ioredtbl[index] & 0xffffffff;
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225 | 610626af | aliguori | } |
226 | 1f5e71a8 | Jan Kiszka | } |
227 | 610626af | aliguori | } |
228 | 9af9b330 | Blue Swirl | DPRINTF("read: %08x = %08x\n", s->ioregsel, val);
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229 | 1f5e71a8 | Jan Kiszka | break;
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230 | 610626af | aliguori | } |
231 | 610626af | aliguori | return val;
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232 | 610626af | aliguori | } |
233 | 610626af | aliguori | |
234 | 1f5e71a8 | Jan Kiszka | static void |
235 | 1f5e71a8 | Jan Kiszka | ioapic_mem_writel(void *opaque, target_phys_addr_t addr, uint32_t val)
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236 | 610626af | aliguori | { |
237 | 610626af | aliguori | IOAPICState *s = opaque; |
238 | 610626af | aliguori | int index;
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239 | 610626af | aliguori | |
240 | 1f5e71a8 | Jan Kiszka | switch (addr & 0xff) { |
241 | 1f5e71a8 | Jan Kiszka | case IOAPIC_IOREGSEL:
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242 | 610626af | aliguori | s->ioregsel = val; |
243 | 1f5e71a8 | Jan Kiszka | break;
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244 | 1f5e71a8 | Jan Kiszka | case IOAPIC_IOWIN:
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245 | 9af9b330 | Blue Swirl | DPRINTF("write: %08x = %08x\n", s->ioregsel, val);
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246 | 610626af | aliguori | switch (s->ioregsel) {
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247 | 1f5e71a8 | Jan Kiszka | case IOAPIC_REG_ID:
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248 | 1f5e71a8 | Jan Kiszka | s->id = (val >> IOAPIC_ID_SHIFT) & IOAPIC_ID_MASK; |
249 | 1f5e71a8 | Jan Kiszka | break;
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250 | 1f5e71a8 | Jan Kiszka | case IOAPIC_REG_VER:
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251 | 1f5e71a8 | Jan Kiszka | case IOAPIC_REG_ARB:
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252 | 1f5e71a8 | Jan Kiszka | break;
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253 | 1f5e71a8 | Jan Kiszka | default:
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254 | 1f5e71a8 | Jan Kiszka | index = (s->ioregsel - IOAPIC_REG_REDTBL_BASE) >> 1;
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255 | 1f5e71a8 | Jan Kiszka | if (index >= 0 && index < IOAPIC_NUM_PINS) { |
256 | 1f5e71a8 | Jan Kiszka | if (s->ioregsel & 1) { |
257 | 1f5e71a8 | Jan Kiszka | s->ioredtbl[index] &= 0xffffffff;
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258 | 1f5e71a8 | Jan Kiszka | s->ioredtbl[index] |= (uint64_t)val << 32;
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259 | 1f5e71a8 | Jan Kiszka | } else {
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260 | 1f5e71a8 | Jan Kiszka | s->ioredtbl[index] &= ~0xffffffffULL;
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261 | 1f5e71a8 | Jan Kiszka | s->ioredtbl[index] |= val; |
262 | 610626af | aliguori | } |
263 | 1f5e71a8 | Jan Kiszka | ioapic_service(s); |
264 | 1f5e71a8 | Jan Kiszka | } |
265 | 610626af | aliguori | } |
266 | 1f5e71a8 | Jan Kiszka | break;
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267 | 610626af | aliguori | } |
268 | 610626af | aliguori | } |
269 | 610626af | aliguori | |
270 | 35a74c5c | Jan Kiszka | static int ioapic_post_load(void *opaque, int version_id) |
271 | 35a74c5c | Jan Kiszka | { |
272 | 35a74c5c | Jan Kiszka | IOAPICState *s = opaque; |
273 | 35a74c5c | Jan Kiszka | |
274 | 35a74c5c | Jan Kiszka | if (version_id == 1) { |
275 | 35a74c5c | Jan Kiszka | /* set sane value */
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276 | 35a74c5c | Jan Kiszka | s->irr = 0;
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277 | 35a74c5c | Jan Kiszka | } |
278 | 35a74c5c | Jan Kiszka | return 0; |
279 | 35a74c5c | Jan Kiszka | } |
280 | 35a74c5c | Jan Kiszka | |
281 | 3e9e9888 | Juan Quintela | static const VMStateDescription vmstate_ioapic = { |
282 | 3e9e9888 | Juan Quintela | .name = "ioapic",
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283 | 5dce4999 | Jan Kiszka | .version_id = 3,
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284 | 35a74c5c | Jan Kiszka | .post_load = ioapic_post_load, |
285 | 3e9e9888 | Juan Quintela | .minimum_version_id = 1,
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286 | 3e9e9888 | Juan Quintela | .minimum_version_id_old = 1,
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287 | 1f5e71a8 | Jan Kiszka | .fields = (VMStateField[]) { |
288 | 3e9e9888 | Juan Quintela | VMSTATE_UINT8(id, IOAPICState), |
289 | 3e9e9888 | Juan Quintela | VMSTATE_UINT8(ioregsel, IOAPICState), |
290 | 5dce4999 | Jan Kiszka | VMSTATE_UNUSED_V(2, 8), /* to account for qemu-kvm's v2 format */ |
291 | 35a74c5c | Jan Kiszka | VMSTATE_UINT32_V(irr, IOAPICState, 2),
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292 | 3e9e9888 | Juan Quintela | VMSTATE_UINT64_ARRAY(ioredtbl, IOAPICState, IOAPIC_NUM_PINS), |
293 | 3e9e9888 | Juan Quintela | VMSTATE_END_OF_LIST() |
294 | 610626af | aliguori | } |
295 | 3e9e9888 | Juan Quintela | }; |
296 | 610626af | aliguori | |
297 | 96051119 | Blue Swirl | static void ioapic_reset(DeviceState *d) |
298 | 610626af | aliguori | { |
299 | 96051119 | Blue Swirl | IOAPICState *s = DO_UPCAST(IOAPICState, busdev.qdev, d); |
300 | 610626af | aliguori | int i;
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301 | 610626af | aliguori | |
302 | 96051119 | Blue Swirl | s->id = 0;
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303 | 96051119 | Blue Swirl | s->ioregsel = 0;
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304 | 96051119 | Blue Swirl | s->irr = 0;
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305 | 1f5e71a8 | Jan Kiszka | for (i = 0; i < IOAPIC_NUM_PINS; i++) { |
306 | 1f5e71a8 | Jan Kiszka | s->ioredtbl[i] = 1 << IOAPIC_LVT_MASKED_SHIFT;
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307 | 1f5e71a8 | Jan Kiszka | } |
308 | 610626af | aliguori | } |
309 | 610626af | aliguori | |
310 | d60efc6b | Blue Swirl | static CPUReadMemoryFunc * const ioapic_mem_read[3] = { |
311 | 610626af | aliguori | ioapic_mem_readl, |
312 | 610626af | aliguori | ioapic_mem_readl, |
313 | 610626af | aliguori | ioapic_mem_readl, |
314 | 610626af | aliguori | }; |
315 | 610626af | aliguori | |
316 | d60efc6b | Blue Swirl | static CPUWriteMemoryFunc * const ioapic_mem_write[3] = { |
317 | 610626af | aliguori | ioapic_mem_writel, |
318 | 610626af | aliguori | ioapic_mem_writel, |
319 | 610626af | aliguori | ioapic_mem_writel, |
320 | 610626af | aliguori | }; |
321 | 610626af | aliguori | |
322 | 96051119 | Blue Swirl | static int ioapic_init1(SysBusDevice *dev) |
323 | 610626af | aliguori | { |
324 | 96051119 | Blue Swirl | IOAPICState *s = FROM_SYSBUS(IOAPICState, dev); |
325 | 610626af | aliguori | int io_memory;
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326 | 0280b571 | Jan Kiszka | static int ioapic_no; |
327 | 0280b571 | Jan Kiszka | |
328 | 0280b571 | Jan Kiszka | if (ioapic_no >= MAX_IOAPICS) {
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329 | 0280b571 | Jan Kiszka | return -1; |
330 | 0280b571 | Jan Kiszka | } |
331 | 610626af | aliguori | |
332 | 1eed09cb | Avi Kivity | io_memory = cpu_register_io_memory(ioapic_mem_read, |
333 | 2507c12a | Alexander Graf | ioapic_mem_write, s, |
334 | 2507c12a | Alexander Graf | DEVICE_NATIVE_ENDIAN); |
335 | 96051119 | Blue Swirl | sysbus_init_mmio(dev, 0x1000, io_memory);
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336 | 610626af | aliguori | |
337 | 96051119 | Blue Swirl | qdev_init_gpio_in(&dev->qdev, ioapic_set_irq, IOAPIC_NUM_PINS); |
338 | 610626af | aliguori | |
339 | 0280b571 | Jan Kiszka | ioapics[ioapic_no++] = s; |
340 | 0280b571 | Jan Kiszka | |
341 | 96051119 | Blue Swirl | return 0; |
342 | 610626af | aliguori | } |
343 | 96051119 | Blue Swirl | |
344 | 96051119 | Blue Swirl | static SysBusDeviceInfo ioapic_info = {
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345 | 96051119 | Blue Swirl | .init = ioapic_init1, |
346 | 96051119 | Blue Swirl | .qdev.name = "ioapic",
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347 | 96051119 | Blue Swirl | .qdev.size = sizeof(IOAPICState),
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348 | 96051119 | Blue Swirl | .qdev.vmsd = &vmstate_ioapic, |
349 | 96051119 | Blue Swirl | .qdev.reset = ioapic_reset, |
350 | 96051119 | Blue Swirl | .qdev.no_user = 1,
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351 | 96051119 | Blue Swirl | }; |
352 | 96051119 | Blue Swirl | |
353 | 96051119 | Blue Swirl | static void ioapic_register_devices(void) |
354 | 96051119 | Blue Swirl | { |
355 | 96051119 | Blue Swirl | sysbus_register_withprop(&ioapic_info); |
356 | 96051119 | Blue Swirl | } |
357 | 96051119 | Blue Swirl | |
358 | 96051119 | Blue Swirl | device_init(ioapic_register_devices) |