| File: | hw/arm/../omap_intc.c |
| Location: | line 455, 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 ); } |