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1 | 80cabfad | bellard | /*
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2 | 80cabfad | bellard | * QEMU 8259 interrupt controller emulation
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3 | 5fafdf24 | ths | *
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4 | 80cabfad | bellard | * Copyright (c) 2003-2004 Fabrice Bellard
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5 | 5fafdf24 | ths | *
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6 | 80cabfad | bellard | * Permission is hereby granted, free of charge, to any person obtaining a copy
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7 | 80cabfad | bellard | * of this software and associated documentation files (the "Software"), to deal
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8 | 80cabfad | bellard | * in the Software without restriction, including without limitation the rights
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9 | 80cabfad | bellard | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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10 | 80cabfad | bellard | * copies of the Software, and to permit persons to whom the Software is
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11 | 80cabfad | bellard | * furnished to do so, subject to the following conditions:
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12 | 80cabfad | bellard | *
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13 | 80cabfad | bellard | * The above copyright notice and this permission notice shall be included in
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14 | 80cabfad | bellard | * all copies or substantial portions of the Software.
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15 | 80cabfad | bellard | *
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16 | 80cabfad | bellard | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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17 | 80cabfad | bellard | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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18 | 80cabfad | bellard | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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19 | 80cabfad | bellard | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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20 | 80cabfad | bellard | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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21 | 80cabfad | bellard | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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22 | 80cabfad | bellard | * THE SOFTWARE.
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23 | 80cabfad | bellard | */
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24 | 87ecb68b | pbrook | #include "hw.h" |
25 | 87ecb68b | pbrook | #include "pc.h" |
26 | 87ecb68b | pbrook | #include "isa.h" |
27 | 376253ec | aliguori | #include "monitor.h" |
28 | 0bf9e31a | Blue Swirl | #include "qemu-timer.h" |
29 | 512709f5 | Jan Kiszka | #include "i8259_internal.h" |
30 | 80cabfad | bellard | |
31 | 80cabfad | bellard | /* debug PIC */
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32 | 80cabfad | bellard | //#define DEBUG_PIC
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33 | 80cabfad | bellard | |
34 | 8ac02ff8 | Blue Swirl | #ifdef DEBUG_PIC
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35 | 8ac02ff8 | Blue Swirl | #define DPRINTF(fmt, ...) \
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36 | 8ac02ff8 | Blue Swirl | do { printf("pic: " fmt , ## __VA_ARGS__); } while (0) |
37 | 8ac02ff8 | Blue Swirl | #else
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38 | 8ac02ff8 | Blue Swirl | #define DPRINTF(fmt, ...)
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39 | 8ac02ff8 | Blue Swirl | #endif
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40 | 8ac02ff8 | Blue Swirl | |
41 | b41a2cd1 | bellard | //#define DEBUG_IRQ_LATENCY
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42 | 4a0fb71e | bellard | //#define DEBUG_IRQ_COUNT
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43 | b41a2cd1 | bellard | |
44 | 81a02f93 | Jan Kiszka | #if defined(DEBUG_PIC) || defined(DEBUG_IRQ_COUNT)
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45 | 4a0fb71e | bellard | static int irq_level[16]; |
46 | 4a0fb71e | bellard | #endif
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47 | 4a0fb71e | bellard | #ifdef DEBUG_IRQ_COUNT
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48 | 4a0fb71e | bellard | static uint64_t irq_count[16]; |
49 | 4a0fb71e | bellard | #endif
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50 | 747c70af | Jan Kiszka | #ifdef DEBUG_IRQ_LATENCY
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51 | 747c70af | Jan Kiszka | static int64_t irq_time[16]; |
52 | 747c70af | Jan Kiszka | #endif
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53 | 9aa78c42 | Jan Kiszka | DeviceState *isa_pic; |
54 | 512709f5 | Jan Kiszka | static PICCommonState *slave_pic;
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55 | 4a0fb71e | bellard | |
56 | 80cabfad | bellard | /* return the highest priority found in mask (highest = smallest
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57 | 80cabfad | bellard | number). Return 8 if no irq */
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58 | 512709f5 | Jan Kiszka | static int get_priority(PICCommonState *s, int mask) |
59 | 80cabfad | bellard | { |
60 | 80cabfad | bellard | int priority;
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61 | 81a02f93 | Jan Kiszka | |
62 | 81a02f93 | Jan Kiszka | if (mask == 0) { |
63 | 80cabfad | bellard | return 8; |
64 | 81a02f93 | Jan Kiszka | } |
65 | 80cabfad | bellard | priority = 0;
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66 | 81a02f93 | Jan Kiszka | while ((mask & (1 << ((priority + s->priority_add) & 7))) == 0) { |
67 | 80cabfad | bellard | priority++; |
68 | 81a02f93 | Jan Kiszka | } |
69 | 80cabfad | bellard | return priority;
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70 | 80cabfad | bellard | } |
71 | 80cabfad | bellard | |
72 | 80cabfad | bellard | /* return the pic wanted interrupt. return -1 if none */
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73 | 512709f5 | Jan Kiszka | static int pic_get_irq(PICCommonState *s) |
74 | 80cabfad | bellard | { |
75 | 80cabfad | bellard | int mask, cur_priority, priority;
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76 | 80cabfad | bellard | |
77 | 80cabfad | bellard | mask = s->irr & ~s->imr; |
78 | 80cabfad | bellard | priority = get_priority(s, mask); |
79 | 81a02f93 | Jan Kiszka | if (priority == 8) { |
80 | 80cabfad | bellard | return -1; |
81 | 81a02f93 | Jan Kiszka | } |
82 | 80cabfad | bellard | /* compute current priority. If special fully nested mode on the
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83 | 80cabfad | bellard | master, the IRQ coming from the slave is not taken into account
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84 | 80cabfad | bellard | for the priority computation. */
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85 | 80cabfad | bellard | mask = s->isr; |
86 | 81a02f93 | Jan Kiszka | if (s->special_mask) {
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87 | 84678711 | balrog | mask &= ~s->imr; |
88 | 81a02f93 | Jan Kiszka | } |
89 | 25985396 | Jan Kiszka | if (s->special_fully_nested_mode && s->master) {
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90 | 80cabfad | bellard | mask &= ~(1 << 2); |
91 | 25985396 | Jan Kiszka | } |
92 | 80cabfad | bellard | cur_priority = get_priority(s, mask); |
93 | 80cabfad | bellard | if (priority < cur_priority) {
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94 | 80cabfad | bellard | /* higher priority found: an irq should be generated */
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95 | 80cabfad | bellard | return (priority + s->priority_add) & 7; |
96 | 80cabfad | bellard | } else {
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97 | 80cabfad | bellard | return -1; |
98 | 80cabfad | bellard | } |
99 | 80cabfad | bellard | } |
100 | 80cabfad | bellard | |
101 | b76750c1 | Jan Kiszka | /* Update INT output. Must be called every time the output may have changed. */
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102 | 512709f5 | Jan Kiszka | static void pic_update_irq(PICCommonState *s) |
103 | 80cabfad | bellard | { |
104 | b76750c1 | Jan Kiszka | int irq;
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105 | 80cabfad | bellard | |
106 | b76750c1 | Jan Kiszka | irq = pic_get_irq(s); |
107 | 80cabfad | bellard | if (irq >= 0) { |
108 | b76750c1 | Jan Kiszka | DPRINTF("pic%d: imr=%x irr=%x padd=%d\n",
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109 | 25985396 | Jan Kiszka | s->master ? 0 : 1, s->imr, s->irr, s->priority_add); |
110 | 747c70af | Jan Kiszka | qemu_irq_raise(s->int_out[0]);
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111 | d96e1737 | Jan Kiszka | } else {
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112 | 747c70af | Jan Kiszka | qemu_irq_lower(s->int_out[0]);
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113 | 4de9b249 | ths | } |
114 | 80cabfad | bellard | } |
115 | 80cabfad | bellard | |
116 | 62026017 | Jan Kiszka | /* set irq level. If an edge is detected, then the IRR is set to 1 */
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117 | 747c70af | Jan Kiszka | static void pic_set_irq(void *opaque, int irq, int level) |
118 | 62026017 | Jan Kiszka | { |
119 | 512709f5 | Jan Kiszka | PICCommonState *s = opaque; |
120 | 747c70af | Jan Kiszka | int mask = 1 << irq; |
121 | 747c70af | Jan Kiszka | |
122 | 747c70af | Jan Kiszka | #if defined(DEBUG_PIC) || defined(DEBUG_IRQ_COUNT) || \
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123 | 747c70af | Jan Kiszka | defined(DEBUG_IRQ_LATENCY) |
124 | 747c70af | Jan Kiszka | int irq_index = s->master ? irq : irq + 8; |
125 | 747c70af | Jan Kiszka | #endif
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126 | 747c70af | Jan Kiszka | #if defined(DEBUG_PIC) || defined(DEBUG_IRQ_COUNT)
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127 | 747c70af | Jan Kiszka | if (level != irq_level[irq_index]) {
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128 | 747c70af | Jan Kiszka | DPRINTF("pic_set_irq: irq=%d level=%d\n", irq_index, level);
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129 | 747c70af | Jan Kiszka | irq_level[irq_index] = level; |
130 | 747c70af | Jan Kiszka | #ifdef DEBUG_IRQ_COUNT
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131 | 747c70af | Jan Kiszka | if (level == 1) { |
132 | 747c70af | Jan Kiszka | irq_count[irq_index]++; |
133 | 747c70af | Jan Kiszka | } |
134 | 747c70af | Jan Kiszka | #endif
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135 | 747c70af | Jan Kiszka | } |
136 | 747c70af | Jan Kiszka | #endif
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137 | 747c70af | Jan Kiszka | #ifdef DEBUG_IRQ_LATENCY
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138 | 747c70af | Jan Kiszka | if (level) {
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139 | 747c70af | Jan Kiszka | irq_time[irq_index] = qemu_get_clock_ns(vm_clock); |
140 | 747c70af | Jan Kiszka | } |
141 | 747c70af | Jan Kiszka | #endif
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142 | 747c70af | Jan Kiszka | |
143 | 62026017 | Jan Kiszka | if (s->elcr & mask) {
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144 | 62026017 | Jan Kiszka | /* level triggered */
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145 | 62026017 | Jan Kiszka | if (level) {
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146 | 62026017 | Jan Kiszka | s->irr |= mask; |
147 | 62026017 | Jan Kiszka | s->last_irr |= mask; |
148 | 62026017 | Jan Kiszka | } else {
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149 | 62026017 | Jan Kiszka | s->irr &= ~mask; |
150 | 62026017 | Jan Kiszka | s->last_irr &= ~mask; |
151 | 62026017 | Jan Kiszka | } |
152 | 62026017 | Jan Kiszka | } else {
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153 | 62026017 | Jan Kiszka | /* edge triggered */
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154 | 62026017 | Jan Kiszka | if (level) {
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155 | 62026017 | Jan Kiszka | if ((s->last_irr & mask) == 0) { |
156 | 62026017 | Jan Kiszka | s->irr |= mask; |
157 | 62026017 | Jan Kiszka | } |
158 | 62026017 | Jan Kiszka | s->last_irr |= mask; |
159 | 62026017 | Jan Kiszka | } else {
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160 | 62026017 | Jan Kiszka | s->last_irr &= ~mask; |
161 | 62026017 | Jan Kiszka | } |
162 | 62026017 | Jan Kiszka | } |
163 | b76750c1 | Jan Kiszka | pic_update_irq(s); |
164 | 62026017 | Jan Kiszka | } |
165 | 62026017 | Jan Kiszka | |
166 | 80cabfad | bellard | /* acknowledge interrupt 'irq' */
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167 | 512709f5 | Jan Kiszka | static void pic_intack(PICCommonState *s, int irq) |
168 | 80cabfad | bellard | { |
169 | 80cabfad | bellard | if (s->auto_eoi) {
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170 | 81a02f93 | Jan Kiszka | if (s->rotate_on_auto_eoi) {
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171 | 80cabfad | bellard | s->priority_add = (irq + 1) & 7; |
172 | 81a02f93 | Jan Kiszka | } |
173 | 80cabfad | bellard | } else {
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174 | 80cabfad | bellard | s->isr |= (1 << irq);
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175 | 80cabfad | bellard | } |
176 | 0ecf89aa | bellard | /* We don't clear a level sensitive interrupt here */
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177 | 81a02f93 | Jan Kiszka | if (!(s->elcr & (1 << irq))) { |
178 | 0ecf89aa | bellard | s->irr &= ~(1 << irq);
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179 | 81a02f93 | Jan Kiszka | } |
180 | b76750c1 | Jan Kiszka | pic_update_irq(s); |
181 | 80cabfad | bellard | } |
182 | 80cabfad | bellard | |
183 | 9aa78c42 | Jan Kiszka | int pic_read_irq(DeviceState *d)
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184 | 80cabfad | bellard | { |
185 | 512709f5 | Jan Kiszka | PICCommonState *s = DO_UPCAST(PICCommonState, dev.qdev, d); |
186 | 80cabfad | bellard | int irq, irq2, intno;
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187 | 80cabfad | bellard | |
188 | c17725f4 | Jan Kiszka | irq = pic_get_irq(s); |
189 | 15aeac38 | bellard | if (irq >= 0) { |
190 | 15aeac38 | bellard | if (irq == 2) { |
191 | c17725f4 | Jan Kiszka | irq2 = pic_get_irq(slave_pic); |
192 | 15aeac38 | bellard | if (irq2 >= 0) { |
193 | c17725f4 | Jan Kiszka | pic_intack(slave_pic, irq2); |
194 | 15aeac38 | bellard | } else {
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195 | 15aeac38 | bellard | /* spurious IRQ on slave controller */
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196 | 15aeac38 | bellard | irq2 = 7;
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197 | 15aeac38 | bellard | } |
198 | c17725f4 | Jan Kiszka | intno = slave_pic->irq_base + irq2; |
199 | 15aeac38 | bellard | } else {
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200 | c17725f4 | Jan Kiszka | intno = s->irq_base + irq; |
201 | 15aeac38 | bellard | } |
202 | c17725f4 | Jan Kiszka | pic_intack(s, irq); |
203 | 15aeac38 | bellard | } else {
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204 | 15aeac38 | bellard | /* spurious IRQ on host controller */
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205 | 15aeac38 | bellard | irq = 7;
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206 | c17725f4 | Jan Kiszka | intno = s->irq_base + irq; |
207 | 15aeac38 | bellard | } |
208 | 3b46e624 | ths | |
209 | 78ef2b69 | Jan Kiszka | #if defined(DEBUG_PIC) || defined(DEBUG_IRQ_LATENCY)
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210 | 78ef2b69 | Jan Kiszka | if (irq == 2) { |
211 | 78ef2b69 | Jan Kiszka | irq = irq2 + 8;
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212 | 78ef2b69 | Jan Kiszka | } |
213 | 78ef2b69 | Jan Kiszka | #endif
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214 | 80cabfad | bellard | #ifdef DEBUG_IRQ_LATENCY
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215 | 5fafdf24 | ths | printf("IRQ%d latency=%0.3fus\n",
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216 | 5fafdf24 | ths | irq, |
217 | 74475455 | Paolo Bonzini | (double)(qemu_get_clock_ns(vm_clock) -
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218 | 6ee093c9 | Juan Quintela | irq_time[irq]) * 1000000.0 / get_ticks_per_sec()); |
219 | 80cabfad | bellard | #endif
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220 | 8ac02ff8 | Blue Swirl | DPRINTF("pic_interrupt: irq=%d\n", irq);
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221 | 80cabfad | bellard | return intno;
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222 | 80cabfad | bellard | } |
223 | 80cabfad | bellard | |
224 | 512709f5 | Jan Kiszka | static void pic_init_reset(PICCommonState *s) |
225 | d7d02e3c | bellard | { |
226 | 512709f5 | Jan Kiszka | pic_reset_common(s); |
227 | b76750c1 | Jan Kiszka | pic_update_irq(s); |
228 | d7d02e3c | bellard | } |
229 | d7d02e3c | bellard | |
230 | 747c70af | Jan Kiszka | static void pic_reset(DeviceState *dev) |
231 | 86fbf97c | Jan Kiszka | { |
232 | 512709f5 | Jan Kiszka | PICCommonState *s = DO_UPCAST(PICCommonState, dev.qdev, dev); |
233 | 86fbf97c | Jan Kiszka | |
234 | 86fbf97c | Jan Kiszka | s->elcr = 0;
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235 | aa24822b | Jan Kiszka | pic_init_reset(s); |
236 | 86fbf97c | Jan Kiszka | } |
237 | 86fbf97c | Jan Kiszka | |
238 | a8170e5e | Avi Kivity | static void pic_ioport_write(void *opaque, hwaddr addr64, |
239 | 098d314a | Richard Henderson | uint64_t val64, unsigned size)
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240 | 80cabfad | bellard | { |
241 | 512709f5 | Jan Kiszka | PICCommonState *s = opaque; |
242 | 098d314a | Richard Henderson | uint32_t addr = addr64; |
243 | 098d314a | Richard Henderson | uint32_t val = val64; |
244 | d7d02e3c | bellard | int priority, cmd, irq;
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245 | 80cabfad | bellard | |
246 | 8ac02ff8 | Blue Swirl | DPRINTF("write: addr=0x%02x val=0x%02x\n", addr, val);
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247 | 80cabfad | bellard | if (addr == 0) { |
248 | 80cabfad | bellard | if (val & 0x10) { |
249 | 86fbf97c | Jan Kiszka | pic_init_reset(s); |
250 | 80cabfad | bellard | s->init_state = 1;
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251 | 80cabfad | bellard | s->init4 = val & 1;
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252 | 2053152b | ths | s->single_mode = val & 2;
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253 | 81a02f93 | Jan Kiszka | if (val & 0x08) { |
254 | 80cabfad | bellard | hw_error("level sensitive irq not supported");
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255 | 81a02f93 | Jan Kiszka | } |
256 | 80cabfad | bellard | } else if (val & 0x08) { |
257 | 81a02f93 | Jan Kiszka | if (val & 0x04) { |
258 | 80cabfad | bellard | s->poll = 1;
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259 | 81a02f93 | Jan Kiszka | } |
260 | 81a02f93 | Jan Kiszka | if (val & 0x02) { |
261 | 80cabfad | bellard | s->read_reg_select = val & 1;
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262 | 81a02f93 | Jan Kiszka | } |
263 | 81a02f93 | Jan Kiszka | if (val & 0x40) { |
264 | 80cabfad | bellard | s->special_mask = (val >> 5) & 1; |
265 | 81a02f93 | Jan Kiszka | } |
266 | 80cabfad | bellard | } else {
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267 | 80cabfad | bellard | cmd = val >> 5;
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268 | 81a02f93 | Jan Kiszka | switch (cmd) {
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269 | 80cabfad | bellard | case 0: |
270 | 80cabfad | bellard | case 4: |
271 | 80cabfad | bellard | s->rotate_on_auto_eoi = cmd >> 2;
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272 | 80cabfad | bellard | break;
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273 | 80cabfad | bellard | case 1: /* end of interrupt */ |
274 | 80cabfad | bellard | case 5: |
275 | 80cabfad | bellard | priority = get_priority(s, s->isr); |
276 | 80cabfad | bellard | if (priority != 8) { |
277 | 80cabfad | bellard | irq = (priority + s->priority_add) & 7;
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278 | 80cabfad | bellard | s->isr &= ~(1 << irq);
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279 | 81a02f93 | Jan Kiszka | if (cmd == 5) { |
280 | 80cabfad | bellard | s->priority_add = (irq + 1) & 7; |
281 | 81a02f93 | Jan Kiszka | } |
282 | b76750c1 | Jan Kiszka | pic_update_irq(s); |
283 | 80cabfad | bellard | } |
284 | 80cabfad | bellard | break;
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285 | 80cabfad | bellard | case 3: |
286 | 80cabfad | bellard | irq = val & 7;
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287 | 80cabfad | bellard | s->isr &= ~(1 << irq);
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288 | b76750c1 | Jan Kiszka | pic_update_irq(s); |
289 | 80cabfad | bellard | break;
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290 | 80cabfad | bellard | case 6: |
291 | 80cabfad | bellard | s->priority_add = (val + 1) & 7; |
292 | b76750c1 | Jan Kiszka | pic_update_irq(s); |
293 | 80cabfad | bellard | break;
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294 | 80cabfad | bellard | case 7: |
295 | 80cabfad | bellard | irq = val & 7;
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296 | 80cabfad | bellard | s->isr &= ~(1 << irq);
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297 | 80cabfad | bellard | s->priority_add = (irq + 1) & 7; |
298 | b76750c1 | Jan Kiszka | pic_update_irq(s); |
299 | 80cabfad | bellard | break;
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300 | 80cabfad | bellard | default:
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301 | 80cabfad | bellard | /* no operation */
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302 | 80cabfad | bellard | break;
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303 | 80cabfad | bellard | } |
304 | 80cabfad | bellard | } |
305 | 80cabfad | bellard | } else {
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306 | 81a02f93 | Jan Kiszka | switch (s->init_state) {
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307 | 80cabfad | bellard | case 0: |
308 | 80cabfad | bellard | /* normal mode */
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309 | 80cabfad | bellard | s->imr = val; |
310 | b76750c1 | Jan Kiszka | pic_update_irq(s); |
311 | 80cabfad | bellard | break;
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312 | 80cabfad | bellard | case 1: |
313 | 80cabfad | bellard | s->irq_base = val & 0xf8;
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314 | 2bb081f7 | ths | s->init_state = s->single_mode ? (s->init4 ? 3 : 0) : 2; |
315 | 80cabfad | bellard | break;
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316 | 80cabfad | bellard | case 2: |
317 | 80cabfad | bellard | if (s->init4) {
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318 | 80cabfad | bellard | s->init_state = 3;
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319 | 80cabfad | bellard | } else {
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320 | 80cabfad | bellard | s->init_state = 0;
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321 | 80cabfad | bellard | } |
322 | 80cabfad | bellard | break;
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323 | 80cabfad | bellard | case 3: |
324 | 80cabfad | bellard | s->special_fully_nested_mode = (val >> 4) & 1; |
325 | 80cabfad | bellard | s->auto_eoi = (val >> 1) & 1; |
326 | 80cabfad | bellard | s->init_state = 0;
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327 | 80cabfad | bellard | break;
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328 | 80cabfad | bellard | } |
329 | 80cabfad | bellard | } |
330 | 80cabfad | bellard | } |
331 | 80cabfad | bellard | |
332 | a8170e5e | Avi Kivity | static uint64_t pic_ioport_read(void *opaque, hwaddr addr, |
333 | 098d314a | Richard Henderson | unsigned size)
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334 | 80cabfad | bellard | { |
335 | 512709f5 | Jan Kiszka | PICCommonState *s = opaque; |
336 | 80cabfad | bellard | int ret;
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337 | 80cabfad | bellard | |
338 | 80cabfad | bellard | if (s->poll) {
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339 | 8d484caa | Jan Kiszka | ret = pic_get_irq(s); |
340 | 8d484caa | Jan Kiszka | if (ret >= 0) { |
341 | 8d484caa | Jan Kiszka | pic_intack(s, ret); |
342 | 8d484caa | Jan Kiszka | ret |= 0x80;
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343 | 8d484caa | Jan Kiszka | } else {
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344 | 8d484caa | Jan Kiszka | ret = 0;
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345 | 8d484caa | Jan Kiszka | } |
346 | 80cabfad | bellard | s->poll = 0;
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347 | 80cabfad | bellard | } else {
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348 | 80cabfad | bellard | if (addr == 0) { |
349 | 81a02f93 | Jan Kiszka | if (s->read_reg_select) {
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350 | 80cabfad | bellard | ret = s->isr; |
351 | 81a02f93 | Jan Kiszka | } else {
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352 | 80cabfad | bellard | ret = s->irr; |
353 | 81a02f93 | Jan Kiszka | } |
354 | 80cabfad | bellard | } else {
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355 | 80cabfad | bellard | ret = s->imr; |
356 | 80cabfad | bellard | } |
357 | 80cabfad | bellard | } |
358 | 08406b03 | malc | DPRINTF("read: addr=0x%02x val=0x%02x\n", addr, ret);
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359 | 80cabfad | bellard | return ret;
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360 | 80cabfad | bellard | } |
361 | 80cabfad | bellard | |
362 | 9aa78c42 | Jan Kiszka | int pic_get_output(DeviceState *d)
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363 | d96e1737 | Jan Kiszka | { |
364 | 512709f5 | Jan Kiszka | PICCommonState *s = DO_UPCAST(PICCommonState, dev.qdev, d); |
365 | 9aa78c42 | Jan Kiszka | |
366 | c17725f4 | Jan Kiszka | return (pic_get_irq(s) >= 0); |
367 | d96e1737 | Jan Kiszka | } |
368 | d96e1737 | Jan Kiszka | |
369 | a8170e5e | Avi Kivity | static void elcr_ioport_write(void *opaque, hwaddr addr, |
370 | 098d314a | Richard Henderson | uint64_t val, unsigned size)
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371 | 660de336 | bellard | { |
372 | 512709f5 | Jan Kiszka | PICCommonState *s = opaque; |
373 | 660de336 | bellard | s->elcr = val & s->elcr_mask; |
374 | 660de336 | bellard | } |
375 | 660de336 | bellard | |
376 | a8170e5e | Avi Kivity | static uint64_t elcr_ioport_read(void *opaque, hwaddr addr, |
377 | 098d314a | Richard Henderson | unsigned size)
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378 | 660de336 | bellard | { |
379 | 512709f5 | Jan Kiszka | PICCommonState *s = opaque; |
380 | 660de336 | bellard | return s->elcr;
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381 | 660de336 | bellard | } |
382 | 660de336 | bellard | |
383 | 098d314a | Richard Henderson | static const MemoryRegionOps pic_base_ioport_ops = { |
384 | 098d314a | Richard Henderson | .read = pic_ioport_read, |
385 | 098d314a | Richard Henderson | .write = pic_ioport_write, |
386 | 098d314a | Richard Henderson | .impl = { |
387 | 098d314a | Richard Henderson | .min_access_size = 1,
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388 | 098d314a | Richard Henderson | .max_access_size = 1,
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389 | 098d314a | Richard Henderson | }, |
390 | 098d314a | Richard Henderson | }; |
391 | 098d314a | Richard Henderson | |
392 | 098d314a | Richard Henderson | static const MemoryRegionOps pic_elcr_ioport_ops = { |
393 | 098d314a | Richard Henderson | .read = elcr_ioport_read, |
394 | 098d314a | Richard Henderson | .write = elcr_ioport_write, |
395 | 098d314a | Richard Henderson | .impl = { |
396 | 098d314a | Richard Henderson | .min_access_size = 1,
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397 | 098d314a | Richard Henderson | .max_access_size = 1,
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398 | 098d314a | Richard Henderson | }, |
399 | 098d314a | Richard Henderson | }; |
400 | 098d314a | Richard Henderson | |
401 | 512709f5 | Jan Kiszka | static void pic_init(PICCommonState *s) |
402 | b0a21b53 | bellard | { |
403 | 098d314a | Richard Henderson | memory_region_init_io(&s->base_io, &pic_base_ioport_ops, s, "pic", 2); |
404 | 098d314a | Richard Henderson | memory_region_init_io(&s->elcr_io, &pic_elcr_ioport_ops, s, "elcr", 1); |
405 | 098d314a | Richard Henderson | |
406 | 512709f5 | Jan Kiszka | qdev_init_gpio_out(&s->dev.qdev, s->int_out, ARRAY_SIZE(s->int_out)); |
407 | 512709f5 | Jan Kiszka | qdev_init_gpio_in(&s->dev.qdev, pic_set_irq, 8);
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408 | b0a21b53 | bellard | } |
409 | b0a21b53 | bellard | |
410 | 376253ec | aliguori | void pic_info(Monitor *mon)
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411 | ba91cd80 | bellard | { |
412 | ba91cd80 | bellard | int i;
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413 | 512709f5 | Jan Kiszka | PICCommonState *s; |
414 | 3b46e624 | ths | |
415 | 81a02f93 | Jan Kiszka | if (!isa_pic) {
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416 | 3de388f6 | bellard | return;
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417 | 81a02f93 | Jan Kiszka | } |
418 | c17725f4 | Jan Kiszka | for (i = 0; i < 2; i++) { |
419 | 512709f5 | Jan Kiszka | s = i == 0 ? DO_UPCAST(PICCommonState, dev.qdev, isa_pic) : slave_pic;
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420 | 376253ec | aliguori | monitor_printf(mon, "pic%d: irr=%02x imr=%02x isr=%02x hprio=%d "
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421 | 376253ec | aliguori | "irq_base=%02x rr_sel=%d elcr=%02x fnm=%d\n",
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422 | 376253ec | aliguori | i, s->irr, s->imr, s->isr, s->priority_add, |
423 | 376253ec | aliguori | s->irq_base, s->read_reg_select, s->elcr, |
424 | 376253ec | aliguori | s->special_fully_nested_mode); |
425 | ba91cd80 | bellard | } |
426 | ba91cd80 | bellard | } |
427 | ba91cd80 | bellard | |
428 | 376253ec | aliguori | void irq_info(Monitor *mon)
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429 | 4a0fb71e | bellard | { |
430 | 4a0fb71e | bellard | #ifndef DEBUG_IRQ_COUNT
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431 | 376253ec | aliguori | monitor_printf(mon, "irq statistic code not compiled.\n");
|
432 | 4a0fb71e | bellard | #else
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433 | 4a0fb71e | bellard | int i;
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434 | 4a0fb71e | bellard | int64_t count; |
435 | 4a0fb71e | bellard | |
436 | 376253ec | aliguori | monitor_printf(mon, "IRQ statistics:\n");
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437 | 4a0fb71e | bellard | for (i = 0; i < 16; i++) { |
438 | 4a0fb71e | bellard | count = irq_count[i]; |
439 | 81a02f93 | Jan Kiszka | if (count > 0) { |
440 | 376253ec | aliguori | monitor_printf(mon, "%2d: %" PRId64 "\n", i, count); |
441 | 81a02f93 | Jan Kiszka | } |
442 | 4a0fb71e | bellard | } |
443 | 4a0fb71e | bellard | #endif
|
444 | 4a0fb71e | bellard | } |
445 | ba91cd80 | bellard | |
446 | 48a18b3c | Hervé Poussineau | qemu_irq *i8259_init(ISABus *bus, qemu_irq parent_irq) |
447 | 80cabfad | bellard | { |
448 | 747c70af | Jan Kiszka | qemu_irq *irq_set; |
449 | 747c70af | Jan Kiszka | ISADevice *dev; |
450 | 747c70af | Jan Kiszka | int i;
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451 | c17725f4 | Jan Kiszka | |
452 | 747c70af | Jan Kiszka | irq_set = g_malloc(ISA_NUM_IRQS * sizeof(qemu_irq));
|
453 | c17725f4 | Jan Kiszka | |
454 | 512709f5 | Jan Kiszka | dev = i8259_init_chip("isa-i8259", bus, true); |
455 | c17725f4 | Jan Kiszka | |
456 | 747c70af | Jan Kiszka | qdev_connect_gpio_out(&dev->qdev, 0, parent_irq);
|
457 | 747c70af | Jan Kiszka | for (i = 0 ; i < 8; i++) { |
458 | 747c70af | Jan Kiszka | irq_set[i] = qdev_get_gpio_in(&dev->qdev, i); |
459 | 747c70af | Jan Kiszka | } |
460 | 747c70af | Jan Kiszka | |
461 | 9aa78c42 | Jan Kiszka | isa_pic = &dev->qdev; |
462 | 747c70af | Jan Kiszka | |
463 | 512709f5 | Jan Kiszka | dev = i8259_init_chip("isa-i8259", bus, false); |
464 | 747c70af | Jan Kiszka | |
465 | 747c70af | Jan Kiszka | qdev_connect_gpio_out(&dev->qdev, 0, irq_set[2]); |
466 | 747c70af | Jan Kiszka | for (i = 0 ; i < 8; i++) { |
467 | 747c70af | Jan Kiszka | irq_set[i + 8] = qdev_get_gpio_in(&dev->qdev, i);
|
468 | 747c70af | Jan Kiszka | } |
469 | 747c70af | Jan Kiszka | |
470 | 512709f5 | Jan Kiszka | slave_pic = DO_UPCAST(PICCommonState, dev, dev); |
471 | c17725f4 | Jan Kiszka | |
472 | 747c70af | Jan Kiszka | return irq_set;
|
473 | 747c70af | Jan Kiszka | } |
474 | 747c70af | Jan Kiszka | |
475 | 8f04ee08 | Anthony Liguori | static void i8259_class_init(ObjectClass *klass, void *data) |
476 | 8f04ee08 | Anthony Liguori | { |
477 | 8f04ee08 | Anthony Liguori | PICCommonClass *k = PIC_COMMON_CLASS(klass); |
478 | 39bffca2 | Anthony Liguori | DeviceClass *dc = DEVICE_CLASS(klass); |
479 | 8f04ee08 | Anthony Liguori | |
480 | 8f04ee08 | Anthony Liguori | k->init = pic_init; |
481 | 39bffca2 | Anthony Liguori | dc->reset = pic_reset; |
482 | 8f04ee08 | Anthony Liguori | } |
483 | 8f04ee08 | Anthony Liguori | |
484 | 39bffca2 | Anthony Liguori | static TypeInfo i8259_info = {
|
485 | 39bffca2 | Anthony Liguori | .name = "isa-i8259",
|
486 | 39bffca2 | Anthony Liguori | .instance_size = sizeof(PICCommonState),
|
487 | 39bffca2 | Anthony Liguori | .parent = TYPE_PIC_COMMON, |
488 | 8f04ee08 | Anthony Liguori | .class_init = i8259_class_init, |
489 | 747c70af | Jan Kiszka | }; |
490 | 747c70af | Jan Kiszka | |
491 | 83f7d43a | Andreas Färber | static void pic_register_types(void) |
492 | 747c70af | Jan Kiszka | { |
493 | 39bffca2 | Anthony Liguori | type_register_static(&i8259_info); |
494 | 80cabfad | bellard | } |
495 | 512709f5 | Jan Kiszka | |
496 | 83f7d43a | Andreas Färber | type_init(pic_register_types) |