root / hw / apic.c @ d3c61721
History | View | Annotate | Download (10.5 kB)
1 | 574bbf7b | bellard | /*
|
---|---|---|---|
2 | 574bbf7b | bellard | * APIC support
|
3 | 574bbf7b | bellard | *
|
4 | 574bbf7b | bellard | * Copyright (c) 2004-2005 Fabrice Bellard
|
5 | 574bbf7b | bellard | *
|
6 | 574bbf7b | bellard | * This library is free software; you can redistribute it and/or
|
7 | 574bbf7b | bellard | * modify it under the terms of the GNU Lesser General Public
|
8 | 574bbf7b | bellard | * License as published by the Free Software Foundation; either
|
9 | 574bbf7b | bellard | * version 2 of the License, or (at your option) any later version.
|
10 | 574bbf7b | bellard | *
|
11 | 574bbf7b | bellard | * This library is distributed in the hope that it will be useful,
|
12 | 574bbf7b | bellard | * but WITHOUT ANY WARRANTY; without even the implied warranty of
|
13 | 574bbf7b | bellard | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
14 | 574bbf7b | bellard | * Lesser General Public License for more details.
|
15 | 574bbf7b | bellard | *
|
16 | 574bbf7b | bellard | * You should have received a copy of the GNU Lesser General Public
|
17 | 574bbf7b | bellard | * License along with this library; if not, write to the Free Software
|
18 | 574bbf7b | bellard | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
19 | 574bbf7b | bellard | */
|
20 | 574bbf7b | bellard | #include "vl.h" |
21 | 574bbf7b | bellard | |
22 | 574bbf7b | bellard | //#define DEBUG_APIC
|
23 | 574bbf7b | bellard | |
24 | 574bbf7b | bellard | /* APIC Local Vector Table */
|
25 | 574bbf7b | bellard | #define APIC_LVT_TIMER 0 |
26 | 574bbf7b | bellard | #define APIC_LVT_THERMAL 1 |
27 | 574bbf7b | bellard | #define APIC_LVT_PERFORM 2 |
28 | 574bbf7b | bellard | #define APIC_LVT_LINT0 3 |
29 | 574bbf7b | bellard | #define APIC_LVT_LINT1 4 |
30 | 574bbf7b | bellard | #define APIC_LVT_ERROR 5 |
31 | 574bbf7b | bellard | #define APIC_LVT_NB 6 |
32 | 574bbf7b | bellard | |
33 | 574bbf7b | bellard | /* APIC delivery modes */
|
34 | 574bbf7b | bellard | #define APIC_DM_FIXED 0 |
35 | 574bbf7b | bellard | #define APIC_DM_LOWPRI 1 |
36 | 574bbf7b | bellard | #define APIC_DM_SMI 2 |
37 | 574bbf7b | bellard | #define APIC_DM_NMI 4 |
38 | 574bbf7b | bellard | #define APIC_DM_INIT 5 |
39 | 574bbf7b | bellard | #define APIC_DM_SIPI 6 |
40 | 574bbf7b | bellard | #define APIC_DM_EXTINT 7 |
41 | 574bbf7b | bellard | |
42 | 574bbf7b | bellard | #define APIC_TRIGGER_EDGE 0 |
43 | 574bbf7b | bellard | #define APIC_TRIGGER_LEVEL 1 |
44 | 574bbf7b | bellard | |
45 | 574bbf7b | bellard | #define APIC_LVT_TIMER_PERIODIC (1<<17) |
46 | 574bbf7b | bellard | #define APIC_LVT_MASKED (1<<16) |
47 | 574bbf7b | bellard | #define APIC_LVT_LEVEL_TRIGGER (1<<15) |
48 | 574bbf7b | bellard | #define APIC_LVT_REMOTE_IRR (1<<14) |
49 | 574bbf7b | bellard | #define APIC_INPUT_POLARITY (1<<13) |
50 | 574bbf7b | bellard | #define APIC_SEND_PENDING (1<<12) |
51 | 574bbf7b | bellard | |
52 | 574bbf7b | bellard | #define ESR_ILLEGAL_ADDRESS (1 << 7) |
53 | 574bbf7b | bellard | |
54 | 574bbf7b | bellard | #define APIC_SV_ENABLE (1 << 8) |
55 | 574bbf7b | bellard | |
56 | 574bbf7b | bellard | typedef struct APICState { |
57 | 574bbf7b | bellard | CPUState *cpu_env; |
58 | 574bbf7b | bellard | uint32_t apicbase; |
59 | 574bbf7b | bellard | uint8_t id; |
60 | 574bbf7b | bellard | uint8_t tpr; |
61 | 574bbf7b | bellard | uint32_t spurious_vec; |
62 | 574bbf7b | bellard | uint32_t isr[8]; /* in service register */ |
63 | 574bbf7b | bellard | uint32_t tmr[8]; /* trigger mode register */ |
64 | 574bbf7b | bellard | uint32_t irr[8]; /* interrupt request register */ |
65 | 574bbf7b | bellard | uint32_t lvt[APIC_LVT_NB]; |
66 | 574bbf7b | bellard | uint32_t esr; /* error register */
|
67 | 574bbf7b | bellard | uint32_t icr[2];
|
68 | 574bbf7b | bellard | |
69 | 574bbf7b | bellard | uint32_t divide_conf; |
70 | 574bbf7b | bellard | int count_shift;
|
71 | 574bbf7b | bellard | uint32_t initial_count; |
72 | 574bbf7b | bellard | int64_t initial_count_load_time, next_time; |
73 | 574bbf7b | bellard | QEMUTimer *timer; |
74 | 574bbf7b | bellard | } APICState; |
75 | 574bbf7b | bellard | |
76 | 574bbf7b | bellard | static int apic_io_memory; |
77 | 574bbf7b | bellard | |
78 | 574bbf7b | bellard | void cpu_set_apic_base(CPUState *env, uint64_t val)
|
79 | 574bbf7b | bellard | { |
80 | 574bbf7b | bellard | APICState *s = env->apic_state; |
81 | 574bbf7b | bellard | #ifdef DEBUG_APIC
|
82 | 574bbf7b | bellard | printf("cpu_set_apic_base: %016llx\n", val);
|
83 | 574bbf7b | bellard | #endif
|
84 | 574bbf7b | bellard | s->apicbase = (val & 0xfffff000) |
|
85 | 574bbf7b | bellard | (s->apicbase & (MSR_IA32_APICBASE_BSP | MSR_IA32_APICBASE_ENABLE)); |
86 | 574bbf7b | bellard | /* if disabled, cannot be enabled again */
|
87 | 574bbf7b | bellard | if (!(val & MSR_IA32_APICBASE_ENABLE)) {
|
88 | 574bbf7b | bellard | s->apicbase &= ~MSR_IA32_APICBASE_ENABLE; |
89 | 574bbf7b | bellard | env->cpuid_features &= ~CPUID_APIC; |
90 | 574bbf7b | bellard | s->spurious_vec &= ~APIC_SV_ENABLE; |
91 | 574bbf7b | bellard | } |
92 | 574bbf7b | bellard | } |
93 | 574bbf7b | bellard | |
94 | 574bbf7b | bellard | uint64_t cpu_get_apic_base(CPUState *env) |
95 | 574bbf7b | bellard | { |
96 | 574bbf7b | bellard | APICState *s = env->apic_state; |
97 | 574bbf7b | bellard | #ifdef DEBUG_APIC
|
98 | 574bbf7b | bellard | printf("cpu_get_apic_base: %016llx\n", (uint64_t)s->apicbase);
|
99 | 574bbf7b | bellard | #endif
|
100 | 574bbf7b | bellard | return s->apicbase;
|
101 | 574bbf7b | bellard | } |
102 | 574bbf7b | bellard | |
103 | 574bbf7b | bellard | /* return -1 if no bit is set */
|
104 | 574bbf7b | bellard | static int get_highest_priority_int(uint32_t *tab) |
105 | 574bbf7b | bellard | { |
106 | 574bbf7b | bellard | int i;
|
107 | 574bbf7b | bellard | for(i = 0;i < 8; i++) { |
108 | 574bbf7b | bellard | if (tab[i] != 0) { |
109 | 574bbf7b | bellard | return i * 32 + ffs(tab[i]) - 1; |
110 | 574bbf7b | bellard | } |
111 | 574bbf7b | bellard | } |
112 | 574bbf7b | bellard | return -1; |
113 | 574bbf7b | bellard | } |
114 | 574bbf7b | bellard | |
115 | 574bbf7b | bellard | static inline void set_bit(uint32_t *tab, int index) |
116 | 574bbf7b | bellard | { |
117 | 574bbf7b | bellard | int i, mask;
|
118 | 574bbf7b | bellard | i = index >> 5;
|
119 | 574bbf7b | bellard | mask = 1 << (index & 0x1f); |
120 | 574bbf7b | bellard | tab[i] |= mask; |
121 | 574bbf7b | bellard | } |
122 | 574bbf7b | bellard | |
123 | 574bbf7b | bellard | static inline void reset_bit(uint32_t *tab, int index) |
124 | 574bbf7b | bellard | { |
125 | 574bbf7b | bellard | int i, mask;
|
126 | 574bbf7b | bellard | i = index >> 5;
|
127 | 574bbf7b | bellard | mask = 1 << (index & 0x1f); |
128 | 574bbf7b | bellard | tab[i] &= ~mask; |
129 | 574bbf7b | bellard | } |
130 | 574bbf7b | bellard | |
131 | 574bbf7b | bellard | static int apic_get_ppr(APICState *s) |
132 | 574bbf7b | bellard | { |
133 | 574bbf7b | bellard | int tpr, isrv, ppr;
|
134 | 574bbf7b | bellard | |
135 | 574bbf7b | bellard | tpr = (s->tpr >> 4);
|
136 | 574bbf7b | bellard | isrv = get_highest_priority_int(s->isr); |
137 | 574bbf7b | bellard | if (isrv < 0) |
138 | 574bbf7b | bellard | isrv = 0;
|
139 | 574bbf7b | bellard | isrv >>= 4;
|
140 | 574bbf7b | bellard | if (tpr >= isrv)
|
141 | 574bbf7b | bellard | ppr = s->tpr; |
142 | 574bbf7b | bellard | else
|
143 | 574bbf7b | bellard | ppr = isrv << 4;
|
144 | 574bbf7b | bellard | return ppr;
|
145 | 574bbf7b | bellard | } |
146 | 574bbf7b | bellard | |
147 | 574bbf7b | bellard | /* signal the CPU if an irq is pending */
|
148 | 574bbf7b | bellard | static void apic_update_irq(APICState *s) |
149 | 574bbf7b | bellard | { |
150 | 574bbf7b | bellard | int irrv, isrv;
|
151 | 574bbf7b | bellard | irrv = get_highest_priority_int(s->irr); |
152 | 574bbf7b | bellard | if (irrv < 0) |
153 | 574bbf7b | bellard | return;
|
154 | 574bbf7b | bellard | isrv = get_highest_priority_int(s->isr); |
155 | 574bbf7b | bellard | /* if the pending irq has less priority, we do not make a new request */
|
156 | 574bbf7b | bellard | if (isrv >= 0 && irrv >= isrv) |
157 | 574bbf7b | bellard | return;
|
158 | 574bbf7b | bellard | cpu_interrupt(s->cpu_env, CPU_INTERRUPT_HARD); |
159 | 574bbf7b | bellard | } |
160 | 574bbf7b | bellard | |
161 | 574bbf7b | bellard | static void apic_set_irq(APICState *s, int vector_num, int trigger_mode) |
162 | 574bbf7b | bellard | { |
163 | 574bbf7b | bellard | set_bit(s->irr, vector_num); |
164 | 574bbf7b | bellard | if (trigger_mode)
|
165 | 574bbf7b | bellard | set_bit(s->tmr, vector_num); |
166 | 574bbf7b | bellard | else
|
167 | 574bbf7b | bellard | reset_bit(s->tmr, vector_num); |
168 | 574bbf7b | bellard | apic_update_irq(s); |
169 | 574bbf7b | bellard | } |
170 | 574bbf7b | bellard | |
171 | 574bbf7b | bellard | static void apic_eoi(APICState *s) |
172 | 574bbf7b | bellard | { |
173 | 574bbf7b | bellard | int isrv;
|
174 | 574bbf7b | bellard | isrv = get_highest_priority_int(s->isr); |
175 | 574bbf7b | bellard | if (isrv < 0) |
176 | 574bbf7b | bellard | return;
|
177 | 574bbf7b | bellard | reset_bit(s->isr, isrv); |
178 | 574bbf7b | bellard | apic_update_irq(s); |
179 | 574bbf7b | bellard | } |
180 | 574bbf7b | bellard | |
181 | 574bbf7b | bellard | int apic_get_interrupt(CPUState *env)
|
182 | 574bbf7b | bellard | { |
183 | 574bbf7b | bellard | APICState *s = env->apic_state; |
184 | 574bbf7b | bellard | int intno;
|
185 | 574bbf7b | bellard | |
186 | 574bbf7b | bellard | /* if the APIC is installed or enabled, we let the 8259 handle the
|
187 | 574bbf7b | bellard | IRQs */
|
188 | 574bbf7b | bellard | if (!s)
|
189 | 574bbf7b | bellard | return -1; |
190 | 574bbf7b | bellard | if (!(s->spurious_vec & APIC_SV_ENABLE))
|
191 | 574bbf7b | bellard | return -1; |
192 | 574bbf7b | bellard | |
193 | 574bbf7b | bellard | /* XXX: spurious IRQ handling */
|
194 | 574bbf7b | bellard | intno = get_highest_priority_int(s->irr); |
195 | 574bbf7b | bellard | if (intno < 0) |
196 | 574bbf7b | bellard | return -1; |
197 | 574bbf7b | bellard | reset_bit(s->irr, intno); |
198 | 574bbf7b | bellard | set_bit(s->isr, intno); |
199 | 574bbf7b | bellard | apic_update_irq(s); |
200 | 574bbf7b | bellard | return intno;
|
201 | 574bbf7b | bellard | } |
202 | 574bbf7b | bellard | |
203 | 574bbf7b | bellard | static uint32_t apic_get_current_count(APICState *s)
|
204 | 574bbf7b | bellard | { |
205 | 574bbf7b | bellard | int64_t d; |
206 | 574bbf7b | bellard | uint32_t val; |
207 | 574bbf7b | bellard | d = (qemu_get_clock(vm_clock) - s->initial_count_load_time) >> |
208 | 574bbf7b | bellard | s->count_shift; |
209 | 574bbf7b | bellard | if (s->lvt[APIC_LVT_TIMER] & APIC_LVT_TIMER_PERIODIC) {
|
210 | 574bbf7b | bellard | /* periodic */
|
211 | 574bbf7b | bellard | val = s->initial_count - (d % (s->initial_count + 1));
|
212 | 574bbf7b | bellard | } else {
|
213 | 574bbf7b | bellard | if (d >= s->initial_count)
|
214 | 574bbf7b | bellard | val = 0;
|
215 | 574bbf7b | bellard | else
|
216 | 574bbf7b | bellard | val = s->initial_count - d; |
217 | 574bbf7b | bellard | } |
218 | 574bbf7b | bellard | return val;
|
219 | 574bbf7b | bellard | } |
220 | 574bbf7b | bellard | |
221 | 574bbf7b | bellard | static void apic_timer_update(APICState *s, int64_t current_time) |
222 | 574bbf7b | bellard | { |
223 | 574bbf7b | bellard | int64_t next_time, d; |
224 | 574bbf7b | bellard | |
225 | 574bbf7b | bellard | if (!(s->lvt[APIC_LVT_TIMER] & APIC_LVT_MASKED)) {
|
226 | 574bbf7b | bellard | d = (current_time - s->initial_count_load_time) >> |
227 | 574bbf7b | bellard | s->count_shift; |
228 | 574bbf7b | bellard | if (s->lvt[APIC_LVT_TIMER] & APIC_LVT_TIMER_PERIODIC) {
|
229 | 574bbf7b | bellard | d = ((d / (s->initial_count + 1)) + 1) * (s->initial_count + 1); |
230 | 574bbf7b | bellard | } else {
|
231 | 574bbf7b | bellard | if (d >= s->initial_count)
|
232 | 574bbf7b | bellard | goto no_timer;
|
233 | 574bbf7b | bellard | d = s->initial_count + 1;
|
234 | 574bbf7b | bellard | } |
235 | 574bbf7b | bellard | next_time = s->initial_count_load_time + (d << s->count_shift); |
236 | 574bbf7b | bellard | qemu_mod_timer(s->timer, next_time); |
237 | 574bbf7b | bellard | s->next_time = next_time; |
238 | 574bbf7b | bellard | } else {
|
239 | 574bbf7b | bellard | no_timer:
|
240 | 574bbf7b | bellard | qemu_del_timer(s->timer); |
241 | 574bbf7b | bellard | } |
242 | 574bbf7b | bellard | } |
243 | 574bbf7b | bellard | |
244 | 574bbf7b | bellard | static void apic_timer(void *opaque) |
245 | 574bbf7b | bellard | { |
246 | 574bbf7b | bellard | APICState *s = opaque; |
247 | 574bbf7b | bellard | |
248 | 574bbf7b | bellard | if (!(s->lvt[APIC_LVT_TIMER] & APIC_LVT_MASKED)) {
|
249 | 574bbf7b | bellard | apic_set_irq(s, s->lvt[APIC_LVT_TIMER] & 0xff, APIC_TRIGGER_EDGE);
|
250 | 574bbf7b | bellard | } |
251 | 574bbf7b | bellard | apic_timer_update(s, s->next_time); |
252 | 574bbf7b | bellard | } |
253 | 574bbf7b | bellard | |
254 | 574bbf7b | bellard | static uint32_t apic_mem_readb(void *opaque, target_phys_addr_t addr) |
255 | 574bbf7b | bellard | { |
256 | 574bbf7b | bellard | return 0; |
257 | 574bbf7b | bellard | } |
258 | 574bbf7b | bellard | |
259 | 574bbf7b | bellard | static uint32_t apic_mem_readw(void *opaque, target_phys_addr_t addr) |
260 | 574bbf7b | bellard | { |
261 | 574bbf7b | bellard | return 0; |
262 | 574bbf7b | bellard | } |
263 | 574bbf7b | bellard | |
264 | 574bbf7b | bellard | static void apic_mem_writeb(void *opaque, target_phys_addr_t addr, uint32_t val) |
265 | 574bbf7b | bellard | { |
266 | 574bbf7b | bellard | } |
267 | 574bbf7b | bellard | |
268 | 574bbf7b | bellard | static void apic_mem_writew(void *opaque, target_phys_addr_t addr, uint32_t val) |
269 | 574bbf7b | bellard | { |
270 | 574bbf7b | bellard | } |
271 | 574bbf7b | bellard | |
272 | 574bbf7b | bellard | static uint32_t apic_mem_readl(void *opaque, target_phys_addr_t addr) |
273 | 574bbf7b | bellard | { |
274 | 574bbf7b | bellard | CPUState *env; |
275 | 574bbf7b | bellard | APICState *s; |
276 | 574bbf7b | bellard | uint32_t val; |
277 | 574bbf7b | bellard | int index;
|
278 | 574bbf7b | bellard | |
279 | 574bbf7b | bellard | env = cpu_single_env; |
280 | 574bbf7b | bellard | if (!env)
|
281 | 574bbf7b | bellard | return 0; |
282 | 574bbf7b | bellard | s = env->apic_state; |
283 | 574bbf7b | bellard | |
284 | 574bbf7b | bellard | index = (addr >> 4) & 0xff; |
285 | 574bbf7b | bellard | switch(index) {
|
286 | 574bbf7b | bellard | case 0x02: /* id */ |
287 | 574bbf7b | bellard | val = s->id << 24;
|
288 | 574bbf7b | bellard | break;
|
289 | 574bbf7b | bellard | case 0x03: /* version */ |
290 | 574bbf7b | bellard | val = 0x11 | ((APIC_LVT_NB - 1) << 16); /* version 0x11 */ |
291 | 574bbf7b | bellard | break;
|
292 | 574bbf7b | bellard | case 0x08: |
293 | 574bbf7b | bellard | val = s->tpr; |
294 | 574bbf7b | bellard | break;
|
295 | 574bbf7b | bellard | case 0x0a: |
296 | 574bbf7b | bellard | /* ppr */
|
297 | 574bbf7b | bellard | val = apic_get_ppr(s); |
298 | 574bbf7b | bellard | break;
|
299 | 574bbf7b | bellard | case 0x0f: |
300 | 574bbf7b | bellard | val = s->spurious_vec; |
301 | 574bbf7b | bellard | break;
|
302 | 574bbf7b | bellard | case 0x10 ... 0x17: |
303 | 574bbf7b | bellard | val = s->isr[index & 7];
|
304 | 574bbf7b | bellard | break;
|
305 | 574bbf7b | bellard | case 0x18 ... 0x1f: |
306 | 574bbf7b | bellard | val = s->tmr[index & 7];
|
307 | 574bbf7b | bellard | break;
|
308 | 574bbf7b | bellard | case 0x20 ... 0x27: |
309 | 574bbf7b | bellard | val = s->irr[index & 7];
|
310 | 574bbf7b | bellard | break;
|
311 | 574bbf7b | bellard | case 0x28: |
312 | 574bbf7b | bellard | val = s->esr; |
313 | 574bbf7b | bellard | break;
|
314 | 574bbf7b | bellard | case 0x32 ... 0x37: |
315 | 574bbf7b | bellard | val = s->lvt[index - 0x32];
|
316 | 574bbf7b | bellard | break;
|
317 | 574bbf7b | bellard | case 0x30: |
318 | 574bbf7b | bellard | case 0x31: |
319 | 574bbf7b | bellard | val = s->icr[index & 1];
|
320 | 574bbf7b | bellard | break;
|
321 | 574bbf7b | bellard | case 0x38: |
322 | 574bbf7b | bellard | val = s->initial_count; |
323 | 574bbf7b | bellard | break;
|
324 | 574bbf7b | bellard | case 0x39: |
325 | 574bbf7b | bellard | val = apic_get_current_count(s); |
326 | 574bbf7b | bellard | break;
|
327 | 574bbf7b | bellard | case 0x3e: |
328 | 574bbf7b | bellard | val = s->divide_conf; |
329 | 574bbf7b | bellard | break;
|
330 | 574bbf7b | bellard | default:
|
331 | 574bbf7b | bellard | s->esr |= ESR_ILLEGAL_ADDRESS; |
332 | 574bbf7b | bellard | val = 0;
|
333 | 574bbf7b | bellard | break;
|
334 | 574bbf7b | bellard | } |
335 | 574bbf7b | bellard | #ifdef DEBUG_APIC
|
336 | 574bbf7b | bellard | printf("APIC read: %08x = %08x\n", (uint32_t)addr, val);
|
337 | 574bbf7b | bellard | #endif
|
338 | 574bbf7b | bellard | return val;
|
339 | 574bbf7b | bellard | } |
340 | 574bbf7b | bellard | |
341 | 574bbf7b | bellard | static void apic_mem_writel(void *opaque, target_phys_addr_t addr, uint32_t val) |
342 | 574bbf7b | bellard | { |
343 | 574bbf7b | bellard | CPUState *env; |
344 | 574bbf7b | bellard | APICState *s; |
345 | 574bbf7b | bellard | int index;
|
346 | 574bbf7b | bellard | |
347 | 574bbf7b | bellard | env = cpu_single_env; |
348 | 574bbf7b | bellard | if (!env)
|
349 | 574bbf7b | bellard | return;
|
350 | 574bbf7b | bellard | s = env->apic_state; |
351 | 574bbf7b | bellard | |
352 | 574bbf7b | bellard | #ifdef DEBUG_APIC
|
353 | 574bbf7b | bellard | printf("APIC write: %08x = %08x\n", (uint32_t)addr, val);
|
354 | 574bbf7b | bellard | #endif
|
355 | 574bbf7b | bellard | |
356 | 574bbf7b | bellard | index = (addr >> 4) & 0xff; |
357 | 574bbf7b | bellard | switch(index) {
|
358 | 574bbf7b | bellard | case 0x02: |
359 | 574bbf7b | bellard | s->id = (val >> 24);
|
360 | 574bbf7b | bellard | break;
|
361 | 574bbf7b | bellard | case 0x08: |
362 | 574bbf7b | bellard | s->tpr = val; |
363 | 574bbf7b | bellard | break;
|
364 | 574bbf7b | bellard | case 0x0b: /* EOI */ |
365 | 574bbf7b | bellard | apic_eoi(s); |
366 | 574bbf7b | bellard | break;
|
367 | 574bbf7b | bellard | case 0x0f: |
368 | 574bbf7b | bellard | s->spurious_vec = val & 0x1ff;
|
369 | 574bbf7b | bellard | break;
|
370 | 574bbf7b | bellard | case 0x30: |
371 | 574bbf7b | bellard | case 0x31: |
372 | 574bbf7b | bellard | s->icr[index & 1] = val;
|
373 | 574bbf7b | bellard | break;
|
374 | 574bbf7b | bellard | case 0x32 ... 0x37: |
375 | 574bbf7b | bellard | { |
376 | 574bbf7b | bellard | int n = index - 0x32; |
377 | 574bbf7b | bellard | s->lvt[n] = val; |
378 | 574bbf7b | bellard | if (n == APIC_LVT_TIMER)
|
379 | 574bbf7b | bellard | apic_timer_update(s, qemu_get_clock(vm_clock)); |
380 | 574bbf7b | bellard | } |
381 | 574bbf7b | bellard | break;
|
382 | 574bbf7b | bellard | case 0x38: |
383 | 574bbf7b | bellard | s->initial_count = val; |
384 | 574bbf7b | bellard | s->initial_count_load_time = qemu_get_clock(vm_clock); |
385 | 574bbf7b | bellard | apic_timer_update(s, s->initial_count_load_time); |
386 | 574bbf7b | bellard | break;
|
387 | 574bbf7b | bellard | case 0x3e: |
388 | 574bbf7b | bellard | { |
389 | 574bbf7b | bellard | int v;
|
390 | 574bbf7b | bellard | s->divide_conf = val & 0xb;
|
391 | 574bbf7b | bellard | v = (s->divide_conf & 3) | ((s->divide_conf >> 1) & 4); |
392 | 574bbf7b | bellard | s->count_shift = (v + 1) & 7; |
393 | 574bbf7b | bellard | } |
394 | 574bbf7b | bellard | break;
|
395 | 574bbf7b | bellard | default:
|
396 | 574bbf7b | bellard | s->esr |= ESR_ILLEGAL_ADDRESS; |
397 | 574bbf7b | bellard | break;
|
398 | 574bbf7b | bellard | } |
399 | 574bbf7b | bellard | } |
400 | 574bbf7b | bellard | |
401 | 574bbf7b | bellard | |
402 | 574bbf7b | bellard | |
403 | 574bbf7b | bellard | static CPUReadMemoryFunc *apic_mem_read[3] = { |
404 | 574bbf7b | bellard | apic_mem_readb, |
405 | 574bbf7b | bellard | apic_mem_readw, |
406 | 574bbf7b | bellard | apic_mem_readl, |
407 | 574bbf7b | bellard | }; |
408 | 574bbf7b | bellard | |
409 | 574bbf7b | bellard | static CPUWriteMemoryFunc *apic_mem_write[3] = { |
410 | 574bbf7b | bellard | apic_mem_writeb, |
411 | 574bbf7b | bellard | apic_mem_writew, |
412 | 574bbf7b | bellard | apic_mem_writel, |
413 | 574bbf7b | bellard | }; |
414 | 574bbf7b | bellard | |
415 | 574bbf7b | bellard | int apic_init(CPUState *env)
|
416 | 574bbf7b | bellard | { |
417 | 574bbf7b | bellard | APICState *s; |
418 | 574bbf7b | bellard | int i;
|
419 | 574bbf7b | bellard | |
420 | 574bbf7b | bellard | s = malloc(sizeof(APICState));
|
421 | 574bbf7b | bellard | if (!s)
|
422 | 574bbf7b | bellard | return -1; |
423 | 574bbf7b | bellard | memset(s, 0, sizeof(*s)); |
424 | 574bbf7b | bellard | env->apic_state = s; |
425 | 574bbf7b | bellard | s->cpu_env = env; |
426 | 574bbf7b | bellard | s->apicbase = 0xfee00000 |
|
427 | 574bbf7b | bellard | MSR_IA32_APICBASE_BSP | MSR_IA32_APICBASE_ENABLE; |
428 | 574bbf7b | bellard | for(i = 0; i < APIC_LVT_NB; i++) |
429 | 574bbf7b | bellard | s->lvt[i] = 1 << 16; /* mask LVT */ |
430 | 574bbf7b | bellard | s->spurious_vec = 0xff;
|
431 | 574bbf7b | bellard | |
432 | 574bbf7b | bellard | if (apic_io_memory == 0) { |
433 | 574bbf7b | bellard | /* NOTE: the APIC is directly connected to the CPU - it is not
|
434 | 574bbf7b | bellard | on the global memory bus. */
|
435 | 574bbf7b | bellard | apic_io_memory = cpu_register_io_memory(0, apic_mem_read,
|
436 | 574bbf7b | bellard | apic_mem_write, NULL);
|
437 | 574bbf7b | bellard | cpu_register_physical_memory(s->apicbase & ~0xfff, 0x1000, apic_io_memory); |
438 | 574bbf7b | bellard | } |
439 | 574bbf7b | bellard | s->timer = qemu_new_timer(vm_clock, apic_timer, s); |
440 | 574bbf7b | bellard | return 0; |
441 | 574bbf7b | bellard | } |