File: | hw/arm/../omap_intc.c |
Location: | line 464, column 16 |
Description: | Dereference of null pointer |
1 | /* | ||
2 | * TI OMAP interrupt controller emulation. | ||
3 | * | ||
4 | * Copyright (C) 2006-2008 Andrzej Zaborowski <balrog@zabor.org> | ||
5 | * Copyright (C) 2007-2008 Nokia Corporation | ||
6 | * | ||
7 | * This program is free software; you can redistribute it and/or | ||
8 | * modify it under the terms of the GNU General Public License as | ||
9 | * published by the Free Software Foundation; either version 2 or | ||
10 | * (at your option) version 3 of the License. | ||
11 | * | ||
12 | * This program is distributed in the hope that it will be useful, | ||
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
15 | * GNU General Public License for more details. | ||
16 | * | ||
17 | * You should have received a copy of the GNU General Public License along | ||
18 | * with this program; if not, see <http://www.gnu.org/licenses/>. | ||
19 | */ | ||
20 | #include "hw.h" | ||
21 | #include "omap.h" | ||
22 | #include "sysbus.h" | ||
23 | |||
24 | /* Interrupt Handlers */ | ||
25 | struct omap_intr_handler_bank_s { | ||
26 | uint32_t irqs; | ||
27 | uint32_t inputs; | ||
28 | uint32_t mask; | ||
29 | uint32_t fiq; | ||
30 | uint32_t sens_edge; | ||
31 | uint32_t swi; | ||
32 | unsigned char priority[32]; | ||
33 | }; | ||
34 | |||
35 | struct omap_intr_handler_s { | ||
36 | SysBusDevice busdev; | ||
37 | qemu_irq *pins; | ||
38 | qemu_irq parent_intr[2]; | ||
39 | MemoryRegion mmio; | ||
40 | void *iclk; | ||
41 | void *fclk; | ||
42 | unsigned char nbanks; | ||
43 | int level_only; | ||
44 | uint32_t size; | ||
45 | |||
46 | uint8_t revision; | ||
47 | |||
48 | /* state */ | ||
49 | uint32_t new_agr[2]; | ||
50 | int sir_intr[2]; | ||
51 | int autoidle; | ||
52 | uint32_t mask; | ||
53 | struct omap_intr_handler_bank_s bank[3]; | ||
54 | }; | ||
55 | |||
56 | static void omap_inth_sir_update(struct omap_intr_handler_s *s, int is_fiq) | ||
57 | { | ||
58 | int i, j, sir_intr, p_intr, p, f; | ||
59 | uint32_t level; | ||
60 | sir_intr = 0; | ||
61 | p_intr = 255; | ||
62 | |||
63 | /* Find the interrupt line with the highest dynamic priority. | ||
64 | * Note: 0 denotes the hightest priority. | ||
65 | * If all interrupts have the same priority, the default order is IRQ_N, | ||
66 | * IRQ_N-1,...,IRQ_0. */ | ||
67 | for (j = 0; j < s->nbanks; ++j) { | ||
68 | level = s->bank[j].irqs & ~s->bank[j].mask & | ||
69 | (is_fiq ? s->bank[j].fiq : ~s->bank[j].fiq); | ||
70 | for (f = ffs(level), i = f - 1, level >>= f - 1; f; i += f, | ||
71 | level >>= f) { | ||
72 | p = s->bank[j].priority[i]; | ||
73 | if (p <= p_intr) { | ||
74 | p_intr = p; | ||
75 | sir_intr = 32 * j + i; | ||
76 | } | ||
77 | f = ffs(level >> 1); | ||
78 | } | ||
79 | } | ||
80 | s->sir_intr[is_fiq] = sir_intr; | ||
81 | } | ||
82 | |||
83 | static inline void omap_inth_update(struct omap_intr_handler_s *s, int is_fiq) | ||
84 | { | ||
85 | int i; | ||
86 | uint32_t has_intr = 0; | ||
87 | |||
88 | for (i = 0; i < s->nbanks; ++i) | ||
89 | has_intr |= s->bank[i].irqs & ~s->bank[i].mask & | ||
90 | (is_fiq ? s->bank[i].fiq : ~s->bank[i].fiq); | ||
91 | |||
92 | if (s->new_agr[is_fiq] & has_intr & s->mask) { | ||
93 | s->new_agr[is_fiq] = 0; | ||
94 | omap_inth_sir_update(s, is_fiq); | ||
95 | qemu_set_irq(s->parent_intr[is_fiq], 1); | ||
96 | } | ||
97 | } | ||
98 | |||
99 | #define INT_FALLING_EDGE0 0 | ||
100 | #define INT_LOW_LEVEL1 1 | ||
101 | |||
102 | static void omap_set_intr(void *opaque, int irq, int req) | ||
103 | { | ||
104 | struct omap_intr_handler_s *ih = (struct omap_intr_handler_s *) opaque; | ||
105 | uint32_t rise; | ||
106 | |||
107 | struct omap_intr_handler_bank_s *bank = &ih->bank[irq >> 5]; | ||
108 | int n = irq & 31; | ||
109 | |||
110 | if (req) { | ||
111 | rise = ~bank->irqs & (1 << n); | ||
112 | if (~bank->sens_edge & (1 << n)) | ||
113 | rise &= ~bank->inputs; | ||
114 | |||
115 | bank->inputs |= (1 << n); | ||
116 | if (rise) { | ||
117 | bank->irqs |= rise; | ||
118 | omap_inth_update(ih, 0); | ||
119 | omap_inth_update(ih, 1); | ||
120 | } | ||
121 | } else { | ||
122 | rise = bank->sens_edge & bank->irqs & (1 << n); | ||
123 | bank->irqs &= ~rise; | ||
124 | bank->inputs &= ~(1 << n); | ||
125 | } | ||
126 | } | ||
127 | |||
128 | /* Simplified version with no edge detection */ | ||
129 | static void omap_set_intr_noedge(void *opaque, int irq, int req) | ||
130 | { | ||
131 | struct omap_intr_handler_s *ih = (struct omap_intr_handler_s *) opaque; | ||
132 | uint32_t rise; | ||
133 | |||
134 | struct omap_intr_handler_bank_s *bank = &ih->bank[irq >> 5]; | ||
135 | int n = irq & 31; | ||
136 | |||
137 | if (req) { | ||
138 | rise = ~bank->inputs & (1 << n); | ||
139 | if (rise) { | ||
140 | bank->irqs |= bank->inputs |= rise; | ||
141 | omap_inth_update(ih, 0); | ||
142 | omap_inth_update(ih, 1); | ||
143 | } | ||
144 | } else | ||
145 | bank->irqs = (bank->inputs &= ~(1 << n)) | bank->swi; | ||
146 | } | ||
147 | |||
148 | static uint64_t omap_inth_read(void *opaque, target_phys_addr_t addr, | ||
149 | unsigned size) | ||
150 | { | ||
151 | struct omap_intr_handler_s *s = (struct omap_intr_handler_s *) opaque; | ||
152 | int i, offset = addr; | ||
153 | int bank_no = offset >> 8; | ||
154 | int line_no; | ||
155 | struct omap_intr_handler_bank_s *bank = &s->bank[bank_no]; | ||
156 | offset &= 0xff; | ||
157 | |||
158 | switch (offset) { | ||
159 | case 0x00: /* ITR */ | ||
160 | return bank->irqs; | ||
161 | |||
162 | case 0x04: /* MIR */ | ||
163 | return bank->mask; | ||
164 | |||
165 | case 0x10: /* SIR_IRQ_CODE */ | ||
166 | case 0x14: /* SIR_FIQ_CODE */ | ||
167 | if (bank_no != 0) | ||
168 | break; | ||
169 | line_no = s->sir_intr[(offset - 0x10) >> 2]; | ||
170 | bank = &s->bank[line_no >> 5]; | ||
171 | i = line_no & 31; | ||
172 | if (((bank->sens_edge >> i) & 1) == INT_FALLING_EDGE0) | ||
173 | bank->irqs &= ~(1 << i); | ||
174 | return line_no; | ||
175 | |||
176 | case 0x18: /* CONTROL_REG */ | ||
177 | if (bank_no != 0) | ||
178 | break; | ||
179 | return 0; | ||
180 | |||
181 | case 0x1c: /* ILR0 */ | ||
182 | case 0x20: /* ILR1 */ | ||
183 | case 0x24: /* ILR2 */ | ||
184 | case 0x28: /* ILR3 */ | ||
185 | case 0x2c: /* ILR4 */ | ||
186 | case 0x30: /* ILR5 */ | ||
187 | case 0x34: /* ILR6 */ | ||
188 | case 0x38: /* ILR7 */ | ||
189 | case 0x3c: /* ILR8 */ | ||
190 | case 0x40: /* ILR9 */ | ||
191 | case 0x44: /* ILR10 */ | ||
192 | case 0x48: /* ILR11 */ | ||
193 | case 0x4c: /* ILR12 */ | ||
194 | case 0x50: /* ILR13 */ | ||
195 | case 0x54: /* ILR14 */ | ||
196 | case 0x58: /* ILR15 */ | ||
197 | case 0x5c: /* ILR16 */ | ||
198 | case 0x60: /* ILR17 */ | ||
199 | case 0x64: /* ILR18 */ | ||
200 | case 0x68: /* ILR19 */ | ||
201 | case 0x6c: /* ILR20 */ | ||
202 | case 0x70: /* ILR21 */ | ||
203 | case 0x74: /* ILR22 */ | ||
204 | case 0x78: /* ILR23 */ | ||
205 | case 0x7c: /* ILR24 */ | ||
206 | case 0x80: /* ILR25 */ | ||
207 | case 0x84: /* ILR26 */ | ||
208 | case 0x88: /* ILR27 */ | ||
209 | case 0x8c: /* ILR28 */ | ||
210 | case 0x90: /* ILR29 */ | ||
211 | case 0x94: /* ILR30 */ | ||
212 | case 0x98: /* ILR31 */ | ||
213 | i = (offset - 0x1c) >> 2; | ||
214 | return (bank->priority[i] << 2) | | ||
215 | (((bank->sens_edge >> i) & 1) << 1) | | ||
216 | ((bank->fiq >> i) & 1); | ||
217 | |||
218 | case 0x9c: /* ISR */ | ||
219 | return 0x00000000; | ||
220 | |||
221 | } | ||
222 | OMAP_BAD_REG(addr)fprintf(stderr, "%s: Bad register " "%#08x" "\n", __FUNCTION__ , addr); | ||
223 | return 0; | ||
224 | } | ||
225 | |||
226 | static void omap_inth_write(void *opaque, target_phys_addr_t addr, | ||
227 | uint64_t value, unsigned size) | ||
228 | { | ||
229 | struct omap_intr_handler_s *s = (struct omap_intr_handler_s *) opaque; | ||
230 | int i, offset = addr; | ||
231 | int bank_no = offset >> 8; | ||
232 | struct omap_intr_handler_bank_s *bank = &s->bank[bank_no]; | ||
233 | offset &= 0xff; | ||
234 | |||
235 | switch (offset) { | ||
236 | case 0x00: /* ITR */ | ||
237 | /* Important: ignore the clearing if the IRQ is level-triggered and | ||
238 | the input bit is 1 */ | ||
239 | bank->irqs &= value | (bank->inputs & bank->sens_edge); | ||
240 | return; | ||
241 | |||
242 | case 0x04: /* MIR */ | ||
243 | bank->mask = value; | ||
244 | omap_inth_update(s, 0); | ||
245 | omap_inth_update(s, 1); | ||
246 | return; | ||
247 | |||
248 | case 0x10: /* SIR_IRQ_CODE */ | ||
249 | case 0x14: /* SIR_FIQ_CODE */ | ||
250 | OMAP_RO_REG(addr)fprintf(stderr, "%s: Read-only register " "%#08x" "\n", __FUNCTION__ , addr); | ||
251 | break; | ||
252 | |||
253 | case 0x18: /* CONTROL_REG */ | ||
254 | if (bank_no != 0) | ||
255 | break; | ||
256 | if (value & 2) { | ||
257 | qemu_set_irq(s->parent_intr[1], 0); | ||
258 | s->new_agr[1] = ~0; | ||
259 | omap_inth_update(s, 1); | ||
260 | } | ||
261 | if (value & 1) { | ||
262 | qemu_set_irq(s->parent_intr[0], 0); | ||
263 | s->new_agr[0] = ~0; | ||
264 | omap_inth_update(s, 0); | ||
265 | } | ||
266 | return; | ||
267 | |||
268 | case 0x1c: /* ILR0 */ | ||
269 | case 0x20: /* ILR1 */ | ||
270 | case 0x24: /* ILR2 */ | ||
271 | case 0x28: /* ILR3 */ | ||
272 | case 0x2c: /* ILR4 */ | ||
273 | case 0x30: /* ILR5 */ | ||
274 | case 0x34: /* ILR6 */ | ||
275 | case 0x38: /* ILR7 */ | ||
276 | case 0x3c: /* ILR8 */ | ||
277 | case 0x40: /* ILR9 */ | ||
278 | case 0x44: /* ILR10 */ | ||
279 | case 0x48: /* ILR11 */ | ||
280 | case 0x4c: /* ILR12 */ | ||
281 | case 0x50: /* ILR13 */ | ||
282 | case 0x54: /* ILR14 */ | ||
283 | case 0x58: /* ILR15 */ | ||
284 | case 0x5c: /* ILR16 */ | ||
285 | case 0x60: /* ILR17 */ | ||
286 | case 0x64: /* ILR18 */ | ||
287 | case 0x68: /* ILR19 */ | ||
288 | case 0x6c: /* ILR20 */ | ||
289 | case 0x70: /* ILR21 */ | ||
290 | case 0x74: /* ILR22 */ | ||
291 | case 0x78: /* ILR23 */ | ||
292 | case 0x7c: /* ILR24 */ | ||
293 | case 0x80: /* ILR25 */ | ||
294 | case 0x84: /* ILR26 */ | ||
295 | case 0x88: /* ILR27 */ | ||
296 | case 0x8c: /* ILR28 */ | ||
297 | case 0x90: /* ILR29 */ | ||
298 | case 0x94: /* ILR30 */ | ||
299 | case 0x98: /* ILR31 */ | ||
300 | i = (offset - 0x1c) >> 2; | ||
301 | bank->priority[i] = (value >> 2) & 0x1f; | ||
302 | bank->sens_edge &= ~(1 << i); | ||
303 | bank->sens_edge |= ((value >> 1) & 1) << i; | ||
304 | bank->fiq &= ~(1 << i); | ||
305 | bank->fiq |= (value & 1) << i; | ||
306 | return; | ||
307 | |||
308 | case 0x9c: /* ISR */ | ||
309 | for (i = 0; i < 32; i ++) | ||
310 | if (value & (1 << i)) { | ||
311 | omap_set_intr(s, 32 * bank_no + i, 1); | ||
312 | return; | ||
313 | } | ||
314 | return; | ||
315 | } | ||
316 | OMAP_BAD_REG(addr)fprintf(stderr, "%s: Bad register " "%#08x" "\n", __FUNCTION__ , addr); | ||
317 | } | ||
318 | |||
319 | static const MemoryRegionOps omap_inth_mem_ops = { | ||
320 | .read = omap_inth_read, | ||
321 | .write = omap_inth_write, | ||
322 | .endianness = DEVICE_NATIVE_ENDIAN, | ||
323 | .valid = { | ||
324 | .min_access_size = 4, | ||
325 | .max_access_size = 4, | ||
326 | }, | ||
327 | }; | ||
328 | |||
329 | static void omap_inth_reset(DeviceState *dev) | ||
330 | { | ||
331 | struct omap_intr_handler_s *s = FROM_SYSBUS(struct omap_intr_handler_s,( __extension__ ( { char __attribute__((unused)) offset_must_be_zero [ -__builtin_offsetof(struct omap_intr_handler_s, busdev)]; ( { const typeof(((struct omap_intr_handler_s *) 0)->busdev) *__mptr = (((SysBusDevice *)(dev))); (struct omap_intr_handler_s *) ((char *) __mptr - __builtin_offsetof(struct omap_intr_handler_s , busdev));});})) | ||
332 | sysbus_from_qdev(dev))( __extension__ ( { char __attribute__((unused)) offset_must_be_zero [ -__builtin_offsetof(struct omap_intr_handler_s, busdev)]; ( { const typeof(((struct omap_intr_handler_s *) 0)->busdev) *__mptr = (((SysBusDevice *)(dev))); (struct omap_intr_handler_s *) ((char *) __mptr - __builtin_offsetof(struct omap_intr_handler_s , busdev));});})); | ||
333 | int i; | ||
334 | |||
335 | for (i = 0; i < s->nbanks; ++i){ | ||
336 | s->bank[i].irqs = 0x00000000; | ||
337 | s->bank[i].mask = 0xffffffff; | ||
338 | s->bank[i].sens_edge = 0x00000000; | ||
339 | s->bank[i].fiq = 0x00000000; | ||
340 | s->bank[i].inputs = 0x00000000; | ||
341 | s->bank[i].swi = 0x00000000; | ||
342 | memset(s->bank[i].priority, 0, sizeof(s->bank[i].priority)); | ||
343 | |||
344 | if (s->level_only) | ||
345 | s->bank[i].sens_edge = 0xffffffff; | ||
346 | } | ||
347 | |||
348 | s->new_agr[0] = ~0; | ||
349 | s->new_agr[1] = ~0; | ||
350 | s->sir_intr[0] = 0; | ||
351 | s->sir_intr[1] = 0; | ||
352 | s->autoidle = 0; | ||
353 | s->mask = ~0; | ||
354 | |||
355 | qemu_set_irq(s->parent_intr[0], 0); | ||
356 | qemu_set_irq(s->parent_intr[1], 0); | ||
357 | } | ||
358 | |||
359 | static int omap_intc_init(SysBusDevice *dev) | ||
360 | { | ||
361 | struct omap_intr_handler_s *s; | ||
362 | s = FROM_SYSBUS(struct omap_intr_handler_s, dev)( __extension__ ( { char __attribute__((unused)) offset_must_be_zero [ -__builtin_offsetof(struct omap_intr_handler_s, busdev)]; ( { const typeof(((struct omap_intr_handler_s *) 0)->busdev) *__mptr = (dev); (struct omap_intr_handler_s *) ((char *) __mptr - __builtin_offsetof(struct omap_intr_handler_s, busdev));}) ;})); | ||
363 | if (!s->iclk) { | ||
364 | hw_error("omap-intc: clk not connected\n"); | ||
365 | } | ||
366 | s->nbanks = 1; | ||
367 | sysbus_init_irq(dev, &s->parent_intr[0]); | ||
368 | sysbus_init_irq(dev, &s->parent_intr[1]); | ||
369 | qdev_init_gpio_in(&dev->qdev, omap_set_intr, s->nbanks * 32); | ||
370 | memory_region_init_io(&s->mmio, &omap_inth_mem_ops, s, | ||
371 | "omap-intc", s->size); | ||
372 | sysbus_init_mmio(dev, &s->mmio); | ||
373 | return 0; | ||
374 | } | ||
375 | |||
376 | static Property omap_intc_properties[] = { | ||
377 | DEFINE_PROP_UINT32("size", struct omap_intr_handler_s, size, 0x100){ .name = ("size"), .info = &(qdev_prop_uint32), .offset = __builtin_offsetof(struct omap_intr_handler_s, size) + ((uint32_t *)0 - (typeof(((struct omap_intr_handler_s *)0)->size)*)0) , .qtype = QTYPE_QINT, .defval = (uint32_t)0x100, }, | ||
378 | DEFINE_PROP_PTR("clk", struct omap_intr_handler_s, iclk){ .name = ("clk"), .info = &(qdev_prop_ptr), .offset = __builtin_offsetof (struct omap_intr_handler_s, iclk) + ((void**)0 - (typeof(((struct omap_intr_handler_s *)0)->iclk)*)0), }, | ||
379 | DEFINE_PROP_END_OF_LIST(){}, | ||
380 | }; | ||
381 | |||
382 | static void omap_intc_class_init(ObjectClass *klass, void *data) | ||
383 | { | ||
384 | DeviceClass *dc = DEVICE_CLASS(klass)((DeviceClass *)object_class_dynamic_cast_assert(((ObjectClass *)((klass))), ("device"))); | ||
385 | SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass)((SysBusDeviceClass *)object_class_dynamic_cast_assert(((ObjectClass *)((klass))), ("sys-bus-device"))); | ||
386 | |||
387 | k->init = omap_intc_init; | ||
388 | dc->reset = omap_inth_reset; | ||
389 | dc->props = omap_intc_properties; | ||
390 | } | ||
391 | |||
392 | static TypeInfo omap_intc_info = { | ||
393 | .name = "omap-intc", | ||
394 | .parent = TYPE_SYS_BUS_DEVICE"sys-bus-device", | ||
395 | .instance_size = sizeof(struct omap_intr_handler_s), | ||
396 | .class_init = omap_intc_class_init, | ||
397 | }; | ||
398 | |||
399 | static uint64_t omap2_inth_read(void *opaque, target_phys_addr_t addr, | ||
400 | unsigned size) | ||
401 | { | ||
402 | struct omap_intr_handler_s *s = (struct omap_intr_handler_s *) opaque; | ||
403 | int offset = addr; | ||
404 | int bank_no, line_no; | ||
405 | struct omap_intr_handler_bank_s *bank = NULL((void*)0); | ||
| |||
406 | |||
407 | if ((offset & 0xf80) == 0x80) { | ||
| |||
408 | bank_no = (offset & 0x60) >> 5; | ||
409 | if (bank_no < s->nbanks) { | ||
410 | offset &= ~0x60; | ||
411 | bank = &s->bank[bank_no]; | ||
412 | } else { | ||
413 | OMAP_BAD_REG(addr)fprintf(stderr, "%s: Bad register " "%#08x" "\n", __FUNCTION__ , addr); | ||
414 | return 0; | ||
415 | } | ||
416 | } | ||
417 | |||
418 | switch (offset) { | ||
| |||
419 | case 0x00: /* INTC_REVISION */ | ||
420 | return s->revision; | ||
421 | |||
422 | case 0x10: /* INTC_SYSCONFIG */ | ||
423 | return (s->autoidle >> 2) & 1; | ||
424 | |||
425 | case 0x14: /* INTC_SYSSTATUS */ | ||
426 | return 1; /* RESETDONE */ | ||
427 | |||
428 | case 0x40: /* INTC_SIR_IRQ */ | ||
429 | return s->sir_intr[0]; | ||
430 | |||
431 | case 0x44: /* INTC_SIR_FIQ */ | ||
432 | return s->sir_intr[1]; | ||
433 | |||
434 | case 0x48: /* INTC_CONTROL */ | ||
435 | return (!s->mask) << 2; /* GLOBALMASK */ | ||
436 | |||
437 | case 0x4c: /* INTC_PROTECTION */ | ||
438 | return 0; | ||
439 | |||
440 | case 0x50: /* INTC_IDLE */ | ||
441 | return s->autoidle & 3; | ||
442 | |||
443 | /* Per-bank registers */ | ||
444 | case 0x80: /* INTC_ITR */ | ||
445 | return bank->inputs; | ||
446 | |||
447 | case 0x84: /* INTC_MIR */ | ||
448 | return bank->mask; | ||
449 | |||
450 | case 0x88: /* INTC_MIR_CLEAR */ | ||
451 | case 0x8c: /* INTC_MIR_SET */ | ||
452 | return 0; | ||
453 | |||
454 | case 0x90: /* INTC_ISR_SET */ | ||
455 | return bank->swi; | ||
456 | |||
457 | case 0x94: /* INTC_ISR_CLEAR */ | ||
458 | return 0; | ||
459 | |||
460 | case 0x98: /* INTC_PENDING_IRQ */ | ||
461 | return bank->irqs & ~bank->mask & ~bank->fiq; | ||
462 | |||
463 | case 0x9c: /* INTC_PENDING_FIQ */ | ||
464 | return bank->irqs & ~bank->mask & bank->fiq; | ||
| |||
465 | |||
466 | /* Per-line registers */ | ||
467 | case 0x100 ... 0x300: /* INTC_ILR */ | ||
468 | bank_no = (offset - 0x100) >> 7; | ||
469 | if (bank_no > s->nbanks) | ||
470 | break; | ||
471 | bank = &s->bank[bank_no]; | ||
472 | line_no = (offset & 0x7f) >> 2; | ||
473 | return (bank->priority[line_no] << 2) | | ||
474 | ((bank->fiq >> line_no) & 1); | ||
475 | } | ||
476 | OMAP_BAD_REG(addr)fprintf(stderr, "%s: Bad register " "%#08x" "\n", __FUNCTION__ , addr); | ||
477 | return 0; | ||
478 | } | ||
479 | |||
480 | static void omap2_inth_write(void *opaque, target_phys_addr_t addr, | ||
481 | uint64_t value, unsigned size) | ||
482 | { | ||
483 | struct omap_intr_handler_s *s = (struct omap_intr_handler_s *) opaque; | ||
484 | int offset = addr; | ||
485 | int bank_no, line_no; | ||
486 | struct omap_intr_handler_bank_s *bank = NULL((void*)0); | ||
487 | |||
488 | if ((offset & 0xf80) == 0x80) { | ||
489 | bank_no = (offset & 0x60) >> 5; | ||
490 | if (bank_no < s->nbanks) { | ||
491 | offset &= ~0x60; | ||
492 | bank = &s->bank[bank_no]; | ||
493 | } else { | ||
494 | OMAP_BAD_REG(addr)fprintf(stderr, "%s: Bad register " "%#08x" "\n", __FUNCTION__ , addr); | ||
495 | return; | ||
496 | } | ||
497 | } | ||
498 | |||
499 | switch (offset) { | ||
500 | case 0x10: /* INTC_SYSCONFIG */ | ||
501 | s->autoidle &= 4; | ||
502 | s->autoidle |= (value & 1) << 2; | ||
503 | if (value & 2) /* SOFTRESET */ | ||
504 | omap_inth_reset(&s->busdev.qdev); | ||
505 | return; | ||
506 | |||
507 | case 0x48: /* INTC_CONTROL */ | ||
508 | s->mask = (value & 4) ? 0 : ~0; /* GLOBALMASK */ | ||
509 | if (value & 2) { /* NEWFIQAGR */ | ||
510 | qemu_set_irq(s->parent_intr[1], 0); | ||
511 | s->new_agr[1] = ~0; | ||
512 | omap_inth_update(s, 1); | ||
513 | } | ||
514 | if (value & 1) { /* NEWIRQAGR */ | ||
515 | qemu_set_irq(s->parent_intr[0], 0); | ||
516 | s->new_agr[0] = ~0; | ||
517 | omap_inth_update(s, 0); | ||
518 | } | ||
519 | return; | ||
520 | |||
521 | case 0x4c: /* INTC_PROTECTION */ | ||
522 | /* TODO: Make a bitmap (or sizeof(char)map) of access privileges | ||
523 | * for every register, see Chapter 3 and 4 for privileged mode. */ | ||
524 | if (value & 1) | ||
525 | fprintf(stderrstderr, "%s: protection mode enable attempt\n", | ||
526 | __FUNCTION__); | ||
527 | return; | ||
528 | |||
529 | case 0x50: /* INTC_IDLE */ | ||
530 | s->autoidle &= ~3; | ||
531 | s->autoidle |= value & 3; | ||
532 | return; | ||
533 | |||
534 | /* Per-bank registers */ | ||
535 | case 0x84: /* INTC_MIR */ | ||
536 | bank->mask = value; | ||
537 | omap_inth_update(s, 0); | ||
538 | omap_inth_update(s, 1); | ||
539 | return; | ||
540 | |||
541 | case 0x88: /* INTC_MIR_CLEAR */ | ||
542 | bank->mask &= ~value; | ||
543 | omap_inth_update(s, 0); | ||
544 | omap_inth_update(s, 1); | ||
545 | return; | ||
546 | |||
547 | case 0x8c: /* INTC_MIR_SET */ | ||
548 | bank->mask |= value; | ||
549 | return; | ||
550 | |||
551 | case 0x90: /* INTC_ISR_SET */ | ||
552 | bank->irqs |= bank->swi |= value; | ||
553 | omap_inth_update(s, 0); | ||
554 | omap_inth_update(s, 1); | ||
555 | return; | ||
556 | |||
557 | case 0x94: /* INTC_ISR_CLEAR */ | ||
558 | bank->swi &= ~value; | ||
559 | bank->irqs = bank->swi & bank->inputs; | ||
560 | return; | ||
561 | |||
562 | /* Per-line registers */ | ||
563 | case 0x100 ... 0x300: /* INTC_ILR */ | ||
564 | bank_no = (offset - 0x100) >> 7; | ||
565 | if (bank_no > s->nbanks) | ||
566 | break; | ||
567 | bank = &s->bank[bank_no]; | ||
568 | line_no = (offset & 0x7f) >> 2; | ||
569 | bank->priority[line_no] = (value >> 2) & 0x3f; | ||
570 | bank->fiq &= ~(1 << line_no); | ||
571 | bank->fiq |= (value & 1) << line_no; | ||
572 | return; | ||
573 | |||
574 | case 0x00: /* INTC_REVISION */ | ||
575 | case 0x14: /* INTC_SYSSTATUS */ | ||
576 | case 0x40: /* INTC_SIR_IRQ */ | ||
577 | case 0x44: /* INTC_SIR_FIQ */ | ||
578 | case 0x80: /* INTC_ITR */ | ||
579 | case 0x98: /* INTC_PENDING_IRQ */ | ||
580 | case 0x9c: /* INTC_PENDING_FIQ */ | ||
581 | OMAP_RO_REG(addr)fprintf(stderr, "%s: Read-only register " "%#08x" "\n", __FUNCTION__ , addr); | ||
582 | return; | ||
583 | } | ||
584 | OMAP_BAD_REG(addr)fprintf(stderr, "%s: Bad register " "%#08x" "\n", __FUNCTION__ , addr); | ||
585 | } | ||
586 | |||
587 | static const MemoryRegionOps omap2_inth_mem_ops = { | ||
588 | .read = omap2_inth_read, | ||
589 | .write = omap2_inth_write, | ||
590 | .endianness = DEVICE_NATIVE_ENDIAN, | ||
591 | .valid = { | ||
592 | .min_access_size = 4, | ||
593 | .max_access_size = 4, | ||
594 | }, | ||
595 | }; | ||
596 | |||
597 | static int omap2_intc_init(SysBusDevice *dev) | ||
598 | { | ||
599 | struct omap_intr_handler_s *s; | ||
600 | s = FROM_SYSBUS(struct omap_intr_handler_s, dev)( __extension__ ( { char __attribute__((unused)) offset_must_be_zero [ -__builtin_offsetof(struct omap_intr_handler_s, busdev)]; ( { const typeof(((struct omap_intr_handler_s *) 0)->busdev) *__mptr = (dev); (struct omap_intr_handler_s *) ((char *) __mptr - __builtin_offsetof(struct omap_intr_handler_s, busdev));}) ;})); | ||
601 | if (!s->iclk) { | ||
602 | hw_error("omap2-intc: iclk not connected\n"); | ||
603 | } | ||
604 | if (!s->fclk) { | ||
605 | hw_error("omap2-intc: fclk not connected\n"); | ||
606 | } | ||
607 | s->level_only = 1; | ||
608 | s->nbanks = 3; | ||
609 | sysbus_init_irq(dev, &s->parent_intr[0]); | ||
610 | sysbus_init_irq(dev, &s->parent_intr[1]); | ||
611 | qdev_init_gpio_in(&dev->qdev, omap_set_intr_noedge, s->nbanks * 32); | ||
612 | memory_region_init_io(&s->mmio, &omap2_inth_mem_ops, s, | ||
613 | "omap2-intc", 0x1000); | ||
614 | sysbus_init_mmio(dev, &s->mmio); | ||
615 | return 0; | ||
616 | } | ||
617 | |||
618 | static Property omap2_intc_properties[] = { | ||
619 | DEFINE_PROP_UINT8("revision", struct omap_intr_handler_s,{ .name = ("revision"), .info = &(qdev_prop_uint8), .offset = __builtin_offsetof(struct omap_intr_handler_s, revision) + ((uint8_t*)0 - (typeof(((struct omap_intr_handler_s *)0)-> revision)*)0), .qtype = QTYPE_QINT, .defval = (uint8_t)0x21, } | ||
620 | revision, 0x21){ .name = ("revision"), .info = &(qdev_prop_uint8), .offset = __builtin_offsetof(struct omap_intr_handler_s, revision) + ((uint8_t*)0 - (typeof(((struct omap_intr_handler_s *)0)-> revision)*)0), .qtype = QTYPE_QINT, .defval = (uint8_t)0x21, }, | ||
621 | DEFINE_PROP_PTR("iclk", struct omap_intr_handler_s, iclk){ .name = ("iclk"), .info = &(qdev_prop_ptr), .offset = __builtin_offsetof (struct omap_intr_handler_s, iclk) + ((void**)0 - (typeof(((struct omap_intr_handler_s *)0)->iclk)*)0), }, | ||
622 | DEFINE_PROP_PTR("fclk", struct omap_intr_handler_s, fclk){ .name = ("fclk"), .info = &(qdev_prop_ptr), .offset = __builtin_offsetof (struct omap_intr_handler_s, fclk) + ((void**)0 - (typeof(((struct omap_intr_handler_s *)0)->fclk)*)0), }, | ||
623 | DEFINE_PROP_END_OF_LIST(){}, | ||
624 | }; | ||
625 | |||
626 | static void omap2_intc_class_init(ObjectClass *klass, void *data) | ||
627 | { | ||
628 | DeviceClass *dc = DEVICE_CLASS(klass)((DeviceClass *)object_class_dynamic_cast_assert(((ObjectClass *)((klass))), ("device"))); | ||
629 | SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass)((SysBusDeviceClass *)object_class_dynamic_cast_assert(((ObjectClass *)((klass))), ("sys-bus-device"))); | ||
630 | |||
631 | k->init = omap2_intc_init; | ||
632 | dc->reset = omap_inth_reset; | ||
633 | dc->props = omap2_intc_properties; | ||
634 | } | ||
635 | |||
636 | static TypeInfo omap2_intc_info = { | ||
637 | .name = "omap2-intc", | ||
638 | .parent = TYPE_SYS_BUS_DEVICE"sys-bus-device", | ||
639 | .instance_size = sizeof(struct omap_intr_handler_s), | ||
640 | .class_init = omap2_intc_class_init, | ||
641 | }; | ||
642 | |||
643 | static void omap_intc_register_types(void) | ||
644 | { | ||
645 | type_register_static(&omap_intc_info); | ||
646 | type_register_static(&omap2_intc_info); | ||
647 | } | ||
648 | |||
649 | type_init(omap_intc_register_types)static void __attribute__((constructor)) do_qemu_init_omap_intc_register_types (void) { register_module_init(omap_intc_register_types, MODULE_INIT_QOM ); } |