Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 1 | /* provide some functions which dump the trace buffer, in a nice way for people |
| 2 | * to read it, and understand what is going on |
| 3 | * |
| 4 | * Copyright 2004-2010 Analog Devices Inc. |
| 5 | * |
| 6 | * Licensed under the GPL-2 or later |
| 7 | */ |
| 8 | |
| 9 | #include <linux/kernel.h> |
| 10 | #include <linux/hardirq.h> |
| 11 | #include <linux/thread_info.h> |
| 12 | #include <linux/mm.h> |
| 13 | #include <linux/uaccess.h> |
| 14 | #include <linux/module.h> |
| 15 | #include <linux/kallsyms.h> |
| 16 | #include <linux/err.h> |
| 17 | #include <linux/fs.h> |
David Howells | df9ee29 | 2010-10-07 14:08:55 +0100 | [diff] [blame] | 18 | #include <linux/irq.h> |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 19 | #include <asm/dma.h> |
| 20 | #include <asm/trace.h> |
| 21 | #include <asm/fixed_code.h> |
| 22 | #include <asm/traps.h> |
Robin Getz | d60805a | 2010-03-12 21:17:44 +0000 | [diff] [blame] | 23 | #include <asm/irq_handler.h> |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 24 | |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 25 | void decode_address(char *buf, unsigned long address) |
| 26 | { |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 27 | struct task_struct *p; |
| 28 | struct mm_struct *mm; |
| 29 | unsigned long flags, offset; |
| 30 | unsigned char in_atomic = (bfin_read_IPEND() & 0x10) || in_atomic(); |
| 31 | struct rb_node *n; |
| 32 | |
| 33 | #ifdef CONFIG_KALLSYMS |
| 34 | unsigned long symsize; |
| 35 | const char *symname; |
| 36 | char *modname; |
| 37 | char *delim = ":"; |
| 38 | char namebuf[128]; |
| 39 | #endif |
| 40 | |
| 41 | buf += sprintf(buf, "<0x%08lx> ", address); |
| 42 | |
| 43 | #ifdef CONFIG_KALLSYMS |
| 44 | /* look up the address and see if we are in kernel space */ |
| 45 | symname = kallsyms_lookup(address, &symsize, &offset, &modname, namebuf); |
| 46 | |
| 47 | if (symname) { |
| 48 | /* yeah! kernel space! */ |
| 49 | if (!modname) |
| 50 | modname = delim = ""; |
| 51 | sprintf(buf, "{ %s%s%s%s + 0x%lx }", |
| 52 | delim, modname, delim, symname, |
| 53 | (unsigned long)offset); |
| 54 | return; |
| 55 | } |
| 56 | #endif |
| 57 | |
| 58 | if (address >= FIXED_CODE_START && address < FIXED_CODE_END) { |
| 59 | /* Problem in fixed code section? */ |
| 60 | strcat(buf, "/* Maybe fixed code section */"); |
| 61 | return; |
| 62 | |
| 63 | } else if (address < CONFIG_BOOT_LOAD) { |
| 64 | /* Problem somewhere before the kernel start address */ |
| 65 | strcat(buf, "/* Maybe null pointer? */"); |
| 66 | return; |
| 67 | |
| 68 | } else if (address >= COREMMR_BASE) { |
| 69 | strcat(buf, "/* core mmrs */"); |
| 70 | return; |
| 71 | |
| 72 | } else if (address >= SYSMMR_BASE) { |
| 73 | strcat(buf, "/* system mmrs */"); |
| 74 | return; |
| 75 | |
| 76 | } else if (address >= L1_ROM_START && address < L1_ROM_START + L1_ROM_LENGTH) { |
| 77 | strcat(buf, "/* on-chip L1 ROM */"); |
| 78 | return; |
Robin Getz | 9a95e2f | 2010-03-15 17:42:07 +0000 | [diff] [blame] | 79 | |
| 80 | } else if (address >= L1_SCRATCH_START && address < L1_SCRATCH_START + L1_SCRATCH_LENGTH) { |
| 81 | strcat(buf, "/* on-chip scratchpad */"); |
| 82 | return; |
| 83 | |
| 84 | } else if (address >= physical_mem_end && address < ASYNC_BANK0_BASE) { |
| 85 | strcat(buf, "/* unconnected memory */"); |
| 86 | return; |
| 87 | |
| 88 | } else if (address >= ASYNC_BANK3_BASE + ASYNC_BANK3_SIZE && address < BOOT_ROM_START) { |
| 89 | strcat(buf, "/* reserved memory */"); |
| 90 | return; |
| 91 | |
| 92 | } else if (address >= L1_DATA_A_START && address < L1_DATA_A_START + L1_DATA_A_LENGTH) { |
| 93 | strcat(buf, "/* on-chip Data Bank A */"); |
| 94 | return; |
| 95 | |
| 96 | } else if (address >= L1_DATA_B_START && address < L1_DATA_B_START + L1_DATA_B_LENGTH) { |
| 97 | strcat(buf, "/* on-chip Data Bank B */"); |
| 98 | return; |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 99 | } |
| 100 | |
| 101 | /* |
| 102 | * Don't walk any of the vmas if we are oopsing, it has been known |
| 103 | * to cause problems - corrupt vmas (kernel crashes) cause double faults |
| 104 | */ |
| 105 | if (oops_in_progress) { |
| 106 | strcat(buf, "/* kernel dynamic memory (maybe user-space) */"); |
| 107 | return; |
| 108 | } |
| 109 | |
| 110 | /* looks like we're off in user-land, so let's walk all the |
| 111 | * mappings of all our processes and see if we can't be a whee |
| 112 | * bit more specific |
| 113 | */ |
| 114 | write_lock_irqsave(&tasklist_lock, flags); |
| 115 | for_each_process(p) { |
| 116 | mm = (in_atomic ? p->mm : get_task_mm(p)); |
| 117 | if (!mm) |
| 118 | continue; |
| 119 | |
| 120 | if (!down_read_trylock(&mm->mmap_sem)) { |
| 121 | if (!in_atomic) |
| 122 | mmput(mm); |
| 123 | continue; |
| 124 | } |
| 125 | |
| 126 | for (n = rb_first(&mm->mm_rb); n; n = rb_next(n)) { |
| 127 | struct vm_area_struct *vma; |
| 128 | |
| 129 | vma = rb_entry(n, struct vm_area_struct, vm_rb); |
| 130 | |
| 131 | if (address >= vma->vm_start && address < vma->vm_end) { |
| 132 | char _tmpbuf[256]; |
| 133 | char *name = p->comm; |
| 134 | struct file *file = vma->vm_file; |
| 135 | |
| 136 | if (file) { |
| 137 | char *d_name = d_path(&file->f_path, _tmpbuf, |
| 138 | sizeof(_tmpbuf)); |
| 139 | if (!IS_ERR(d_name)) |
| 140 | name = d_name; |
| 141 | } |
| 142 | |
| 143 | /* FLAT does not have its text aligned to the start of |
| 144 | * the map while FDPIC ELF does ... |
| 145 | */ |
| 146 | |
| 147 | /* before we can check flat/fdpic, we need to |
| 148 | * make sure current is valid |
| 149 | */ |
| 150 | if ((unsigned long)current >= FIXED_CODE_START && |
| 151 | !((unsigned long)current & 0x3)) { |
| 152 | if (current->mm && |
| 153 | (address > current->mm->start_code) && |
| 154 | (address < current->mm->end_code)) |
| 155 | offset = address - current->mm->start_code; |
| 156 | else |
| 157 | offset = (address - vma->vm_start) + |
| 158 | (vma->vm_pgoff << PAGE_SHIFT); |
| 159 | |
| 160 | sprintf(buf, "[ %s + 0x%lx ]", name, offset); |
| 161 | } else |
| 162 | sprintf(buf, "[ %s vma:0x%lx-0x%lx]", |
| 163 | name, vma->vm_start, vma->vm_end); |
| 164 | |
| 165 | up_read(&mm->mmap_sem); |
| 166 | if (!in_atomic) |
| 167 | mmput(mm); |
| 168 | |
| 169 | if (buf[0] == '\0') |
| 170 | sprintf(buf, "[ %s ] dynamic memory", name); |
| 171 | |
| 172 | goto done; |
| 173 | } |
| 174 | } |
| 175 | |
| 176 | up_read(&mm->mmap_sem); |
| 177 | if (!in_atomic) |
| 178 | mmput(mm); |
| 179 | } |
| 180 | |
| 181 | /* |
| 182 | * we were unable to find this address anywhere, |
| 183 | * or some MMs were skipped because they were in use. |
| 184 | */ |
| 185 | sprintf(buf, "/* kernel dynamic memory */"); |
| 186 | |
| 187 | done: |
| 188 | write_unlock_irqrestore(&tasklist_lock, flags); |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 189 | } |
| 190 | |
| 191 | #define EXPAND_LEN ((1 << CONFIG_DEBUG_BFIN_HWTRACE_EXPAND_LEN) * 256 - 1) |
| 192 | |
| 193 | /* |
| 194 | * Similar to get_user, do some address checking, then dereference |
| 195 | * Return true on success, false on bad address |
| 196 | */ |
Robin Getz | 9a95e2f | 2010-03-15 17:42:07 +0000 | [diff] [blame] | 197 | bool get_mem16(unsigned short *val, unsigned short *address) |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 198 | { |
| 199 | unsigned long addr = (unsigned long)address; |
| 200 | |
| 201 | /* Check for odd addresses */ |
| 202 | if (addr & 0x1) |
| 203 | return false; |
| 204 | |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 205 | switch (bfin_mem_access_type(addr, 2)) { |
| 206 | case BFIN_MEM_ACCESS_CORE: |
| 207 | case BFIN_MEM_ACCESS_CORE_ONLY: |
| 208 | *val = *address; |
| 209 | return true; |
| 210 | case BFIN_MEM_ACCESS_DMA: |
| 211 | dma_memcpy(val, address, 2); |
| 212 | return true; |
| 213 | case BFIN_MEM_ACCESS_ITEST: |
| 214 | isram_memcpy(val, address, 2); |
| 215 | return true; |
| 216 | default: /* invalid access */ |
| 217 | return false; |
| 218 | } |
| 219 | } |
| 220 | |
Robin Getz | 9a95e2f | 2010-03-15 17:42:07 +0000 | [diff] [blame] | 221 | bool get_instruction(unsigned int *val, unsigned short *address) |
| 222 | { |
| 223 | unsigned long addr = (unsigned long)address; |
| 224 | unsigned short opcode0, opcode1; |
| 225 | |
| 226 | /* Check for odd addresses */ |
| 227 | if (addr & 0x1) |
| 228 | return false; |
| 229 | |
| 230 | /* MMR region will never have instructions */ |
| 231 | if (addr >= SYSMMR_BASE) |
| 232 | return false; |
| 233 | |
| 234 | /* Scratchpad will never have instructions */ |
| 235 | if (addr >= L1_SCRATCH_START && addr < L1_SCRATCH_START + L1_SCRATCH_LENGTH) |
| 236 | return false; |
| 237 | |
| 238 | /* Data banks will never have instructions */ |
| 239 | if (addr >= BOOT_ROM_START + BOOT_ROM_LENGTH && addr < L1_CODE_START) |
| 240 | return false; |
| 241 | |
| 242 | if (!get_mem16(&opcode0, address)) |
| 243 | return false; |
| 244 | |
| 245 | /* was this a 32-bit instruction? If so, get the next 16 bits */ |
| 246 | if ((opcode0 & 0xc000) == 0xc000) { |
| 247 | if (!get_mem16(&opcode1, address + 1)) |
| 248 | return false; |
| 249 | *val = (opcode0 << 16) + opcode1; |
| 250 | } else |
| 251 | *val = opcode0; |
| 252 | |
| 253 | return true; |
| 254 | } |
| 255 | |
| 256 | #if defined(CONFIG_DEBUG_BFIN_HWTRACE_ON) |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 257 | /* |
| 258 | * decode the instruction if we are printing out the trace, as it |
| 259 | * makes things easier to follow, without running it through objdump |
Robin Getz | 9a95e2f | 2010-03-15 17:42:07 +0000 | [diff] [blame] | 260 | * Decode the change of flow, and the common load/store instructions |
| 261 | * which are the main cause for faults, and discontinuities in the trace |
| 262 | * buffer. |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 263 | */ |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 264 | |
Robin Getz | 9a95e2f | 2010-03-15 17:42:07 +0000 | [diff] [blame] | 265 | #define ProgCtrl_opcode 0x0000 |
| 266 | #define ProgCtrl_poprnd_bits 0 |
| 267 | #define ProgCtrl_poprnd_mask 0xf |
| 268 | #define ProgCtrl_prgfunc_bits 4 |
| 269 | #define ProgCtrl_prgfunc_mask 0xf |
| 270 | #define ProgCtrl_code_bits 8 |
| 271 | #define ProgCtrl_code_mask 0xff |
| 272 | |
| 273 | static void decode_ProgCtrl_0(unsigned int opcode) |
| 274 | { |
| 275 | int poprnd = ((opcode >> ProgCtrl_poprnd_bits) & ProgCtrl_poprnd_mask); |
| 276 | int prgfunc = ((opcode >> ProgCtrl_prgfunc_bits) & ProgCtrl_prgfunc_mask); |
| 277 | |
| 278 | if (prgfunc == 0 && poprnd == 0) |
| 279 | pr_cont("NOP"); |
| 280 | else if (prgfunc == 1 && poprnd == 0) |
| 281 | pr_cont("RTS"); |
| 282 | else if (prgfunc == 1 && poprnd == 1) |
| 283 | pr_cont("RTI"); |
| 284 | else if (prgfunc == 1 && poprnd == 2) |
| 285 | pr_cont("RTX"); |
| 286 | else if (prgfunc == 1 && poprnd == 3) |
| 287 | pr_cont("RTN"); |
| 288 | else if (prgfunc == 1 && poprnd == 4) |
| 289 | pr_cont("RTE"); |
| 290 | else if (prgfunc == 2 && poprnd == 0) |
| 291 | pr_cont("IDLE"); |
| 292 | else if (prgfunc == 2 && poprnd == 3) |
| 293 | pr_cont("CSYNC"); |
| 294 | else if (prgfunc == 2 && poprnd == 4) |
| 295 | pr_cont("SSYNC"); |
| 296 | else if (prgfunc == 2 && poprnd == 5) |
| 297 | pr_cont("EMUEXCPT"); |
| 298 | else if (prgfunc == 3) |
| 299 | pr_cont("CLI R%i", poprnd); |
| 300 | else if (prgfunc == 4) |
| 301 | pr_cont("STI R%i", poprnd); |
| 302 | else if (prgfunc == 5) |
| 303 | pr_cont("JUMP (P%i)", poprnd); |
| 304 | else if (prgfunc == 6) |
| 305 | pr_cont("CALL (P%i)", poprnd); |
| 306 | else if (prgfunc == 7) |
| 307 | pr_cont("CALL (PC + P%i)", poprnd); |
| 308 | else if (prgfunc == 8) |
| 309 | pr_cont("JUMP (PC + P%i", poprnd); |
| 310 | else if (prgfunc == 9) |
| 311 | pr_cont("RAISE %i", poprnd); |
| 312 | else if (prgfunc == 10) |
| 313 | pr_cont("EXCPT %i", poprnd); |
| 314 | else |
| 315 | pr_cont("0x%04x", opcode); |
| 316 | |
| 317 | } |
| 318 | |
| 319 | #define BRCC_opcode 0x1000 |
| 320 | #define BRCC_offset_bits 0 |
| 321 | #define BRCC_offset_mask 0x3ff |
| 322 | #define BRCC_B_bits 10 |
| 323 | #define BRCC_B_mask 0x1 |
| 324 | #define BRCC_T_bits 11 |
| 325 | #define BRCC_T_mask 0x1 |
| 326 | #define BRCC_code_bits 12 |
| 327 | #define BRCC_code_mask 0xf |
| 328 | |
| 329 | static void decode_BRCC_0(unsigned int opcode) |
| 330 | { |
| 331 | int B = ((opcode >> BRCC_B_bits) & BRCC_B_mask); |
| 332 | int T = ((opcode >> BRCC_T_bits) & BRCC_T_mask); |
| 333 | |
| 334 | pr_cont("IF %sCC JUMP pcrel %s", T ? "" : "!", B ? "(BP)" : ""); |
| 335 | } |
| 336 | |
| 337 | #define CALLa_opcode 0xe2000000 |
| 338 | #define CALLa_addr_bits 0 |
| 339 | #define CALLa_addr_mask 0xffffff |
| 340 | #define CALLa_S_bits 24 |
| 341 | #define CALLa_S_mask 0x1 |
| 342 | #define CALLa_code_bits 25 |
| 343 | #define CALLa_code_mask 0x7f |
| 344 | |
| 345 | static void decode_CALLa_0(unsigned int opcode) |
| 346 | { |
| 347 | int S = ((opcode >> (CALLa_S_bits - 16)) & CALLa_S_mask); |
| 348 | |
| 349 | if (S) |
| 350 | pr_cont("CALL pcrel"); |
| 351 | else |
| 352 | pr_cont("JUMP.L"); |
| 353 | } |
| 354 | |
| 355 | #define LoopSetup_opcode 0xe0800000 |
| 356 | #define LoopSetup_eoffset_bits 0 |
| 357 | #define LoopSetup_eoffset_mask 0x3ff |
| 358 | #define LoopSetup_dontcare_bits 10 |
| 359 | #define LoopSetup_dontcare_mask 0x3 |
| 360 | #define LoopSetup_reg_bits 12 |
| 361 | #define LoopSetup_reg_mask 0xf |
| 362 | #define LoopSetup_soffset_bits 16 |
| 363 | #define LoopSetup_soffset_mask 0xf |
| 364 | #define LoopSetup_c_bits 20 |
| 365 | #define LoopSetup_c_mask 0x1 |
| 366 | #define LoopSetup_rop_bits 21 |
| 367 | #define LoopSetup_rop_mask 0x3 |
| 368 | #define LoopSetup_code_bits 23 |
| 369 | #define LoopSetup_code_mask 0x1ff |
| 370 | |
| 371 | static void decode_LoopSetup_0(unsigned int opcode) |
| 372 | { |
| 373 | int c = ((opcode >> LoopSetup_c_bits) & LoopSetup_c_mask); |
| 374 | int reg = ((opcode >> LoopSetup_reg_bits) & LoopSetup_reg_mask); |
| 375 | int rop = ((opcode >> LoopSetup_rop_bits) & LoopSetup_rop_mask); |
| 376 | |
| 377 | pr_cont("LSETUP <> LC%i", c); |
| 378 | if ((rop & 1) == 1) |
| 379 | pr_cont("= P%i", reg); |
| 380 | if ((rop & 2) == 2) |
| 381 | pr_cont(" >> 0x1"); |
| 382 | } |
| 383 | |
| 384 | #define DspLDST_opcode 0x9c00 |
| 385 | #define DspLDST_reg_bits 0 |
| 386 | #define DspLDST_reg_mask 0x7 |
| 387 | #define DspLDST_i_bits 3 |
| 388 | #define DspLDST_i_mask 0x3 |
| 389 | #define DspLDST_m_bits 5 |
| 390 | #define DspLDST_m_mask 0x3 |
| 391 | #define DspLDST_aop_bits 7 |
| 392 | #define DspLDST_aop_mask 0x3 |
| 393 | #define DspLDST_W_bits 9 |
| 394 | #define DspLDST_W_mask 0x1 |
| 395 | #define DspLDST_code_bits 10 |
| 396 | #define DspLDST_code_mask 0x3f |
| 397 | |
| 398 | static void decode_dspLDST_0(unsigned int opcode) |
| 399 | { |
| 400 | int i = ((opcode >> DspLDST_i_bits) & DspLDST_i_mask); |
| 401 | int m = ((opcode >> DspLDST_m_bits) & DspLDST_m_mask); |
| 402 | int W = ((opcode >> DspLDST_W_bits) & DspLDST_W_mask); |
| 403 | int aop = ((opcode >> DspLDST_aop_bits) & DspLDST_aop_mask); |
| 404 | int reg = ((opcode >> DspLDST_reg_bits) & DspLDST_reg_mask); |
| 405 | |
| 406 | if (W == 0) { |
| 407 | pr_cont("R%i", reg); |
| 408 | switch (m) { |
| 409 | case 0: |
| 410 | pr_cont(" = "); |
| 411 | break; |
| 412 | case 1: |
| 413 | pr_cont(".L = "); |
| 414 | break; |
| 415 | case 2: |
| 416 | pr_cont(".W = "); |
| 417 | break; |
| 418 | } |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 419 | } |
| 420 | |
Robin Getz | 9a95e2f | 2010-03-15 17:42:07 +0000 | [diff] [blame] | 421 | pr_cont("[ I%i", i); |
| 422 | |
| 423 | switch (aop) { |
| 424 | case 0: |
| 425 | pr_cont("++ ]"); |
| 426 | break; |
| 427 | case 1: |
| 428 | pr_cont("-- ]"); |
| 429 | break; |
| 430 | } |
| 431 | |
| 432 | if (W == 1) { |
| 433 | pr_cont(" = R%i", reg); |
| 434 | switch (m) { |
| 435 | case 1: |
| 436 | pr_cont(".L = "); |
| 437 | break; |
| 438 | case 2: |
| 439 | pr_cont(".W = "); |
| 440 | break; |
| 441 | } |
| 442 | } |
| 443 | } |
| 444 | |
| 445 | #define LDST_opcode 0x9000 |
| 446 | #define LDST_reg_bits 0 |
| 447 | #define LDST_reg_mask 0x7 |
| 448 | #define LDST_ptr_bits 3 |
| 449 | #define LDST_ptr_mask 0x7 |
| 450 | #define LDST_Z_bits 6 |
| 451 | #define LDST_Z_mask 0x1 |
| 452 | #define LDST_aop_bits 7 |
| 453 | #define LDST_aop_mask 0x3 |
| 454 | #define LDST_W_bits 9 |
| 455 | #define LDST_W_mask 0x1 |
| 456 | #define LDST_sz_bits 10 |
| 457 | #define LDST_sz_mask 0x3 |
| 458 | #define LDST_code_bits 12 |
| 459 | #define LDST_code_mask 0xf |
| 460 | |
| 461 | static void decode_LDST_0(unsigned int opcode) |
| 462 | { |
| 463 | int Z = ((opcode >> LDST_Z_bits) & LDST_Z_mask); |
| 464 | int W = ((opcode >> LDST_W_bits) & LDST_W_mask); |
| 465 | int sz = ((opcode >> LDST_sz_bits) & LDST_sz_mask); |
| 466 | int aop = ((opcode >> LDST_aop_bits) & LDST_aop_mask); |
| 467 | int reg = ((opcode >> LDST_reg_bits) & LDST_reg_mask); |
| 468 | int ptr = ((opcode >> LDST_ptr_bits) & LDST_ptr_mask); |
| 469 | |
| 470 | if (W == 0) |
| 471 | pr_cont("%s%i = ", (sz == 0 && Z == 1) ? "P" : "R", reg); |
| 472 | |
| 473 | switch (sz) { |
| 474 | case 1: |
| 475 | pr_cont("W"); |
| 476 | break; |
| 477 | case 2: |
| 478 | pr_cont("B"); |
| 479 | break; |
| 480 | } |
| 481 | |
| 482 | pr_cont("[P%i", ptr); |
| 483 | |
| 484 | switch (aop) { |
| 485 | case 0: |
| 486 | pr_cont("++"); |
| 487 | break; |
| 488 | case 1: |
| 489 | pr_cont("--"); |
| 490 | break; |
| 491 | } |
| 492 | pr_cont("]"); |
| 493 | |
| 494 | if (W == 1) |
| 495 | pr_cont(" = %s%i ", (sz == 0 && Z == 1) ? "P" : "R", reg); |
| 496 | |
| 497 | if (sz) { |
| 498 | if (Z) |
| 499 | pr_cont(" (X)"); |
| 500 | else |
| 501 | pr_cont(" (Z)"); |
| 502 | } |
| 503 | } |
| 504 | |
| 505 | #define LDSTii_opcode 0xa000 |
| 506 | #define LDSTii_reg_bit 0 |
| 507 | #define LDSTii_reg_mask 0x7 |
| 508 | #define LDSTii_ptr_bit 3 |
| 509 | #define LDSTii_ptr_mask 0x7 |
| 510 | #define LDSTii_offset_bit 6 |
| 511 | #define LDSTii_offset_mask 0xf |
| 512 | #define LDSTii_op_bit 10 |
| 513 | #define LDSTii_op_mask 0x3 |
| 514 | #define LDSTii_W_bit 12 |
| 515 | #define LDSTii_W_mask 0x1 |
| 516 | #define LDSTii_code_bit 13 |
| 517 | #define LDSTii_code_mask 0x7 |
| 518 | |
| 519 | static void decode_LDSTii_0(unsigned int opcode) |
| 520 | { |
| 521 | int reg = ((opcode >> LDSTii_reg_bit) & LDSTii_reg_mask); |
| 522 | int ptr = ((opcode >> LDSTii_ptr_bit) & LDSTii_ptr_mask); |
| 523 | int offset = ((opcode >> LDSTii_offset_bit) & LDSTii_offset_mask); |
| 524 | int op = ((opcode >> LDSTii_op_bit) & LDSTii_op_mask); |
| 525 | int W = ((opcode >> LDSTii_W_bit) & LDSTii_W_mask); |
| 526 | |
| 527 | if (W == 0) { |
| 528 | pr_cont("%s%i = %s[P%i + %i]", op == 3 ? "R" : "P", reg, |
| 529 | op == 1 || op == 2 ? "" : "W", ptr, offset); |
| 530 | if (op == 2) |
| 531 | pr_cont("(Z)"); |
| 532 | if (op == 3) |
| 533 | pr_cont("(X)"); |
| 534 | } else { |
| 535 | pr_cont("%s[P%i + %i] = %s%i", op == 0 ? "" : "W", ptr, |
| 536 | offset, op == 3 ? "P" : "R", reg); |
| 537 | } |
| 538 | } |
| 539 | |
| 540 | #define LDSTidxI_opcode 0xe4000000 |
| 541 | #define LDSTidxI_offset_bits 0 |
| 542 | #define LDSTidxI_offset_mask 0xffff |
| 543 | #define LDSTidxI_reg_bits 16 |
| 544 | #define LDSTidxI_reg_mask 0x7 |
| 545 | #define LDSTidxI_ptr_bits 19 |
| 546 | #define LDSTidxI_ptr_mask 0x7 |
| 547 | #define LDSTidxI_sz_bits 22 |
| 548 | #define LDSTidxI_sz_mask 0x3 |
| 549 | #define LDSTidxI_Z_bits 24 |
| 550 | #define LDSTidxI_Z_mask 0x1 |
| 551 | #define LDSTidxI_W_bits 25 |
| 552 | #define LDSTidxI_W_mask 0x1 |
| 553 | #define LDSTidxI_code_bits 26 |
| 554 | #define LDSTidxI_code_mask 0x3f |
| 555 | |
| 556 | static void decode_LDSTidxI_0(unsigned int opcode) |
| 557 | { |
| 558 | int Z = ((opcode >> LDSTidxI_Z_bits) & LDSTidxI_Z_mask); |
| 559 | int W = ((opcode >> LDSTidxI_W_bits) & LDSTidxI_W_mask); |
| 560 | int sz = ((opcode >> LDSTidxI_sz_bits) & LDSTidxI_sz_mask); |
| 561 | int reg = ((opcode >> LDSTidxI_reg_bits) & LDSTidxI_reg_mask); |
| 562 | int ptr = ((opcode >> LDSTidxI_ptr_bits) & LDSTidxI_ptr_mask); |
| 563 | int offset = ((opcode >> LDSTidxI_offset_bits) & LDSTidxI_offset_mask); |
| 564 | |
| 565 | if (W == 0) |
| 566 | pr_cont("%s%i = ", sz == 0 && Z == 1 ? "P" : "R", reg); |
| 567 | |
| 568 | if (sz == 1) |
| 569 | pr_cont("W"); |
| 570 | if (sz == 2) |
| 571 | pr_cont("B"); |
| 572 | |
| 573 | pr_cont("[P%i + %s0x%x]", ptr, offset & 0x20 ? "-" : "", |
| 574 | (offset & 0x1f) << 2); |
| 575 | |
| 576 | if (W == 0 && sz != 0) { |
| 577 | if (Z) |
| 578 | pr_cont("(X)"); |
| 579 | else |
| 580 | pr_cont("(Z)"); |
| 581 | } |
| 582 | |
| 583 | if (W == 1) |
| 584 | pr_cont("= %s%i", (sz == 0 && Z == 1) ? "P" : "R", reg); |
| 585 | |
| 586 | } |
| 587 | |
| 588 | static void decode_opcode(unsigned int opcode) |
| 589 | { |
| 590 | #ifdef CONFIG_BUG |
| 591 | if (opcode == BFIN_BUG_OPCODE) |
| 592 | pr_cont("BUG"); |
| 593 | else |
| 594 | #endif |
| 595 | if ((opcode & 0xffffff00) == ProgCtrl_opcode) |
| 596 | decode_ProgCtrl_0(opcode); |
| 597 | else if ((opcode & 0xfffff000) == BRCC_opcode) |
| 598 | decode_BRCC_0(opcode); |
| 599 | else if ((opcode & 0xfffff000) == 0x2000) |
| 600 | pr_cont("JUMP.S"); |
| 601 | else if ((opcode & 0xfe000000) == CALLa_opcode) |
| 602 | decode_CALLa_0(opcode); |
| 603 | else if ((opcode & 0xff8000C0) == LoopSetup_opcode) |
| 604 | decode_LoopSetup_0(opcode); |
| 605 | else if ((opcode & 0xfffffc00) == DspLDST_opcode) |
| 606 | decode_dspLDST_0(opcode); |
| 607 | else if ((opcode & 0xfffff000) == LDST_opcode) |
| 608 | decode_LDST_0(opcode); |
| 609 | else if ((opcode & 0xffffe000) == LDSTii_opcode) |
| 610 | decode_LDSTii_0(opcode); |
| 611 | else if ((opcode & 0xfc000000) == LDSTidxI_opcode) |
| 612 | decode_LDSTidxI_0(opcode); |
| 613 | else if (opcode & 0xffff0000) |
| 614 | pr_cont("0x%08x", opcode); |
| 615 | else |
| 616 | pr_cont("0x%04x", opcode); |
| 617 | } |
| 618 | |
| 619 | #define BIT_MULTI_INS 0x08000000 |
| 620 | static void decode_instruction(unsigned short *address) |
| 621 | { |
| 622 | unsigned int opcode; |
| 623 | |
| 624 | if (!get_instruction(&opcode, address)) |
| 625 | return; |
| 626 | |
| 627 | decode_opcode(opcode); |
| 628 | |
| 629 | /* If things are a 32-bit instruction, it has the possibility of being |
| 630 | * a multi-issue instruction (a 32-bit, and 2 16 bit instrucitions) |
| 631 | * This test collidates with the unlink instruction, so disallow that |
| 632 | */ |
| 633 | if ((opcode & 0xc0000000) == 0xc0000000 && |
| 634 | (opcode & BIT_MULTI_INS) && |
| 635 | (opcode & 0xe8000000) != 0xe8000000) { |
| 636 | pr_cont(" || "); |
| 637 | if (!get_instruction(&opcode, address + 2)) |
| 638 | return; |
| 639 | decode_opcode(opcode); |
| 640 | pr_cont(" || "); |
| 641 | if (!get_instruction(&opcode, address + 3)) |
| 642 | return; |
| 643 | decode_opcode(opcode); |
| 644 | } |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 645 | } |
| 646 | #endif |
| 647 | |
| 648 | void dump_bfin_trace_buffer(void) |
| 649 | { |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 650 | #ifdef CONFIG_DEBUG_BFIN_HWTRACE_ON |
Robin Getz | d60805a | 2010-03-12 21:17:44 +0000 | [diff] [blame] | 651 | int tflags, i = 0, fault = 0; |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 652 | char buf[150]; |
| 653 | unsigned short *addr; |
Robin Getz | d60805a | 2010-03-12 21:17:44 +0000 | [diff] [blame] | 654 | unsigned int cpu = raw_smp_processor_id(); |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 655 | #ifdef CONFIG_DEBUG_BFIN_HWTRACE_EXPAND |
| 656 | int j, index; |
| 657 | #endif |
| 658 | |
| 659 | trace_buffer_save(tflags); |
| 660 | |
Robin Getz | d28cff4 | 2010-03-11 19:26:38 +0000 | [diff] [blame] | 661 | pr_notice("Hardware Trace:\n"); |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 662 | |
| 663 | #ifdef CONFIG_DEBUG_BFIN_HWTRACE_EXPAND |
Robin Getz | d28cff4 | 2010-03-11 19:26:38 +0000 | [diff] [blame] | 664 | pr_notice("WARNING: Expanded trace turned on - can not trace exceptions\n"); |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 665 | #endif |
| 666 | |
| 667 | if (likely(bfin_read_TBUFSTAT() & TBUFCNT)) { |
| 668 | for (; bfin_read_TBUFSTAT() & TBUFCNT; i++) { |
Robin Getz | d60805a | 2010-03-12 21:17:44 +0000 | [diff] [blame] | 669 | addr = (unsigned short *)bfin_read_TBUF(); |
| 670 | decode_address(buf, (unsigned long)addr); |
Robin Getz | d28cff4 | 2010-03-11 19:26:38 +0000 | [diff] [blame] | 671 | pr_notice("%4i Target : %s\n", i, buf); |
Robin Getz | d60805a | 2010-03-12 21:17:44 +0000 | [diff] [blame] | 672 | /* Normally, the faulting instruction doesn't go into |
| 673 | * the trace buffer, (since it doesn't commit), so |
| 674 | * we print out the fault address here |
| 675 | */ |
Robin Getz | a80d5f4 | 2010-03-29 14:07:33 +0000 | [diff] [blame] | 676 | if (!fault && addr == ((unsigned short *)evt_ivhw)) { |
| 677 | addr = (unsigned short *)bfin_read_TBUF(); |
| 678 | decode_address(buf, (unsigned long)addr); |
| 679 | pr_notice(" FAULT : %s ", buf); |
| 680 | decode_instruction(addr); |
| 681 | pr_cont("\n"); |
| 682 | fault = 1; |
| 683 | continue; |
| 684 | } |
Robin Getz | d60805a | 2010-03-12 21:17:44 +0000 | [diff] [blame] | 685 | if (!fault && addr == (unsigned short *)trap && |
| 686 | (cpu_pda[cpu].seqstat & SEQSTAT_EXCAUSE) > VEC_EXCPT15) { |
| 687 | decode_address(buf, cpu_pda[cpu].icplb_fault_addr); |
| 688 | pr_notice(" FAULT : %s ", buf); |
| 689 | decode_instruction((unsigned short *)cpu_pda[cpu].icplb_fault_addr); |
| 690 | pr_cont("\n"); |
| 691 | fault = 1; |
| 692 | } |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 693 | addr = (unsigned short *)bfin_read_TBUF(); |
| 694 | decode_address(buf, (unsigned long)addr); |
Robin Getz | d28cff4 | 2010-03-11 19:26:38 +0000 | [diff] [blame] | 695 | pr_notice(" Source : %s ", buf); |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 696 | decode_instruction(addr); |
Robin Getz | d28cff4 | 2010-03-11 19:26:38 +0000 | [diff] [blame] | 697 | pr_cont("\n"); |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 698 | } |
| 699 | } |
| 700 | |
| 701 | #ifdef CONFIG_DEBUG_BFIN_HWTRACE_EXPAND |
| 702 | if (trace_buff_offset) |
| 703 | index = trace_buff_offset / 4; |
| 704 | else |
| 705 | index = EXPAND_LEN; |
| 706 | |
| 707 | j = (1 << CONFIG_DEBUG_BFIN_HWTRACE_EXPAND_LEN) * 128; |
| 708 | while (j) { |
| 709 | decode_address(buf, software_trace_buff[index]); |
Robin Getz | d28cff4 | 2010-03-11 19:26:38 +0000 | [diff] [blame] | 710 | pr_notice("%4i Target : %s\n", i, buf); |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 711 | index -= 1; |
| 712 | if (index < 0) |
| 713 | index = EXPAND_LEN; |
| 714 | decode_address(buf, software_trace_buff[index]); |
Robin Getz | d28cff4 | 2010-03-11 19:26:38 +0000 | [diff] [blame] | 715 | pr_notice(" Source : %s ", buf); |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 716 | decode_instruction((unsigned short *)software_trace_buff[index]); |
Robin Getz | d28cff4 | 2010-03-11 19:26:38 +0000 | [diff] [blame] | 717 | pr_cont("\n"); |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 718 | index -= 1; |
| 719 | if (index < 0) |
| 720 | index = EXPAND_LEN; |
| 721 | j--; |
| 722 | i++; |
| 723 | } |
| 724 | #endif |
| 725 | |
| 726 | trace_buffer_restore(tflags); |
| 727 | #endif |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 728 | } |
| 729 | EXPORT_SYMBOL(dump_bfin_trace_buffer); |
| 730 | |
| 731 | void dump_bfin_process(struct pt_regs *fp) |
| 732 | { |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 733 | /* We should be able to look at fp->ipend, but we don't push it on the |
| 734 | * stack all the time, so do this until we fix that */ |
| 735 | unsigned int context = bfin_read_IPEND(); |
| 736 | |
| 737 | if (oops_in_progress) |
Robin Getz | d28cff4 | 2010-03-11 19:26:38 +0000 | [diff] [blame] | 738 | pr_emerg("Kernel OOPS in progress\n"); |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 739 | |
| 740 | if (context & 0x0020 && (fp->seqstat & SEQSTAT_EXCAUSE) == VEC_HWERR) |
Robin Getz | d28cff4 | 2010-03-11 19:26:38 +0000 | [diff] [blame] | 741 | pr_notice("HW Error context\n"); |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 742 | else if (context & 0x0020) |
Robin Getz | d28cff4 | 2010-03-11 19:26:38 +0000 | [diff] [blame] | 743 | pr_notice("Deferred Exception context\n"); |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 744 | else if (context & 0x3FC0) |
Robin Getz | d28cff4 | 2010-03-11 19:26:38 +0000 | [diff] [blame] | 745 | pr_notice("Interrupt context\n"); |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 746 | else if (context & 0x4000) |
Robin Getz | d28cff4 | 2010-03-11 19:26:38 +0000 | [diff] [blame] | 747 | pr_notice("Deferred Interrupt context\n"); |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 748 | else if (context & 0x8000) |
Robin Getz | d28cff4 | 2010-03-11 19:26:38 +0000 | [diff] [blame] | 749 | pr_notice("Kernel process context\n"); |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 750 | |
| 751 | /* Because we are crashing, and pointers could be bad, we check things |
| 752 | * pretty closely before we use them |
| 753 | */ |
| 754 | if ((unsigned long)current >= FIXED_CODE_START && |
| 755 | !((unsigned long)current & 0x3) && current->pid) { |
Robin Getz | d28cff4 | 2010-03-11 19:26:38 +0000 | [diff] [blame] | 756 | pr_notice("CURRENT PROCESS:\n"); |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 757 | if (current->comm >= (char *)FIXED_CODE_START) |
Robin Getz | d28cff4 | 2010-03-11 19:26:38 +0000 | [diff] [blame] | 758 | pr_notice("COMM=%s PID=%d", |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 759 | current->comm, current->pid); |
| 760 | else |
Robin Getz | d28cff4 | 2010-03-11 19:26:38 +0000 | [diff] [blame] | 761 | pr_notice("COMM= invalid"); |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 762 | |
Robin Getz | d28cff4 | 2010-03-11 19:26:38 +0000 | [diff] [blame] | 763 | pr_cont(" CPU=%d\n", current_thread_info()->cpu); |
| 764 | if (!((unsigned long)current->mm & 0x3) && |
| 765 | (unsigned long)current->mm >= FIXED_CODE_START) { |
| 766 | pr_notice("TEXT = 0x%p-0x%p DATA = 0x%p-0x%p\n", |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 767 | (void *)current->mm->start_code, |
| 768 | (void *)current->mm->end_code, |
| 769 | (void *)current->mm->start_data, |
Robin Getz | d28cff4 | 2010-03-11 19:26:38 +0000 | [diff] [blame] | 770 | (void *)current->mm->end_data); |
| 771 | pr_notice(" BSS = 0x%p-0x%p USER-STACK = 0x%p\n\n", |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 772 | (void *)current->mm->end_data, |
| 773 | (void *)current->mm->brk, |
| 774 | (void *)current->mm->start_stack); |
Robin Getz | d28cff4 | 2010-03-11 19:26:38 +0000 | [diff] [blame] | 775 | } else |
| 776 | pr_notice("invalid mm\n"); |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 777 | } else |
Robin Getz | d28cff4 | 2010-03-11 19:26:38 +0000 | [diff] [blame] | 778 | pr_notice("No Valid process in current context\n"); |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 779 | } |
| 780 | |
| 781 | void dump_bfin_mem(struct pt_regs *fp) |
| 782 | { |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 783 | unsigned short *addr, *erraddr, val = 0, err = 0; |
| 784 | char sti = 0, buf[6]; |
| 785 | |
| 786 | erraddr = (void *)fp->pc; |
| 787 | |
Robin Getz | d28cff4 | 2010-03-11 19:26:38 +0000 | [diff] [blame] | 788 | pr_notice("return address: [0x%p]; contents of:", erraddr); |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 789 | |
| 790 | for (addr = (unsigned short *)((unsigned long)erraddr & ~0xF) - 0x10; |
| 791 | addr < (unsigned short *)((unsigned long)erraddr & ~0xF) + 0x10; |
| 792 | addr++) { |
| 793 | if (!((unsigned long)addr & 0xF)) |
Robin Getz | d28cff4 | 2010-03-11 19:26:38 +0000 | [diff] [blame] | 794 | pr_notice("0x%p: ", addr); |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 795 | |
Robin Getz | 9a95e2f | 2010-03-15 17:42:07 +0000 | [diff] [blame] | 796 | if (!get_mem16(&val, addr)) { |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 797 | val = 0; |
| 798 | sprintf(buf, "????"); |
| 799 | } else |
| 800 | sprintf(buf, "%04x", val); |
| 801 | |
| 802 | if (addr == erraddr) { |
Robin Getz | d28cff4 | 2010-03-11 19:26:38 +0000 | [diff] [blame] | 803 | pr_cont("[%s]", buf); |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 804 | err = val; |
| 805 | } else |
Robin Getz | d28cff4 | 2010-03-11 19:26:38 +0000 | [diff] [blame] | 806 | pr_cont(" %s ", buf); |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 807 | |
| 808 | /* Do any previous instructions turn on interrupts? */ |
| 809 | if (addr <= erraddr && /* in the past */ |
| 810 | ((val >= 0x0040 && val <= 0x0047) || /* STI instruction */ |
| 811 | val == 0x017b)) /* [SP++] = RETI */ |
| 812 | sti = 1; |
| 813 | } |
| 814 | |
Robin Getz | d28cff4 | 2010-03-11 19:26:38 +0000 | [diff] [blame] | 815 | pr_cont("\n"); |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 816 | |
| 817 | /* Hardware error interrupts can be deferred */ |
| 818 | if (unlikely(sti && (fp->seqstat & SEQSTAT_EXCAUSE) == VEC_HWERR && |
| 819 | oops_in_progress)){ |
Robin Getz | d28cff4 | 2010-03-11 19:26:38 +0000 | [diff] [blame] | 820 | pr_notice("Looks like this was a deferred error - sorry\n"); |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 821 | #ifndef CONFIG_DEBUG_HWERR |
Robin Getz | d28cff4 | 2010-03-11 19:26:38 +0000 | [diff] [blame] | 822 | pr_notice("The remaining message may be meaningless\n"); |
| 823 | pr_notice("You should enable CONFIG_DEBUG_HWERR to get a better idea where it came from\n"); |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 824 | #else |
| 825 | /* If we are handling only one peripheral interrupt |
| 826 | * and current mm and pid are valid, and the last error |
| 827 | * was in that user space process's text area |
| 828 | * print it out - because that is where the problem exists |
| 829 | */ |
| 830 | if ((!(((fp)->ipend & ~0x30) & (((fp)->ipend & ~0x30) - 1))) && |
| 831 | (current->pid && current->mm)) { |
| 832 | /* And the last RETI points to the current userspace context */ |
| 833 | if ((fp + 1)->pc >= current->mm->start_code && |
| 834 | (fp + 1)->pc <= current->mm->end_code) { |
Robin Getz | d28cff4 | 2010-03-11 19:26:38 +0000 | [diff] [blame] | 835 | pr_notice("It might be better to look around here :\n"); |
| 836 | pr_notice("-------------------------------------------\n"); |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 837 | show_regs(fp + 1); |
Robin Getz | d28cff4 | 2010-03-11 19:26:38 +0000 | [diff] [blame] | 838 | pr_notice("-------------------------------------------\n"); |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 839 | } |
| 840 | } |
| 841 | #endif |
| 842 | } |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 843 | } |
| 844 | |
| 845 | void show_regs(struct pt_regs *fp) |
| 846 | { |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 847 | char buf[150]; |
| 848 | struct irqaction *action; |
| 849 | unsigned int i; |
| 850 | unsigned long flags = 0; |
| 851 | unsigned int cpu = raw_smp_processor_id(); |
| 852 | unsigned char in_atomic = (bfin_read_IPEND() & 0x10) || in_atomic(); |
| 853 | |
Robin Getz | d28cff4 | 2010-03-11 19:26:38 +0000 | [diff] [blame] | 854 | pr_notice("\n"); |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 855 | if (CPUID != bfin_cpuid()) |
Robin Getz | d28cff4 | 2010-03-11 19:26:38 +0000 | [diff] [blame] | 856 | pr_notice("Compiled for cpu family 0x%04x (Rev %d), " |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 857 | "but running on:0x%04x (Rev %d)\n", |
| 858 | CPUID, bfin_compiled_revid(), bfin_cpuid(), bfin_revid()); |
| 859 | |
Robin Getz | d28cff4 | 2010-03-11 19:26:38 +0000 | [diff] [blame] | 860 | pr_notice("ADSP-%s-0.%d", |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 861 | CPU, bfin_compiled_revid()); |
| 862 | |
| 863 | if (bfin_compiled_revid() != bfin_revid()) |
Robin Getz | d28cff4 | 2010-03-11 19:26:38 +0000 | [diff] [blame] | 864 | pr_cont("(Detected 0.%d)", bfin_revid()); |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 865 | |
Robin Getz | d28cff4 | 2010-03-11 19:26:38 +0000 | [diff] [blame] | 866 | pr_cont(" %lu(MHz CCLK) %lu(MHz SCLK) (%s)\n", |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 867 | get_cclk()/1000000, get_sclk()/1000000, |
| 868 | #ifdef CONFIG_MPU |
| 869 | "mpu on" |
| 870 | #else |
| 871 | "mpu off" |
| 872 | #endif |
| 873 | ); |
| 874 | |
Robin Getz | d28cff4 | 2010-03-11 19:26:38 +0000 | [diff] [blame] | 875 | pr_notice("%s", linux_banner); |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 876 | |
Robin Getz | d28cff4 | 2010-03-11 19:26:38 +0000 | [diff] [blame] | 877 | pr_notice("\nSEQUENCER STATUS:\t\t%s\n", print_tainted()); |
| 878 | pr_notice(" SEQSTAT: %08lx IPEND: %04lx IMASK: %04lx SYSCFG: %04lx\n", |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 879 | (long)fp->seqstat, fp->ipend, cpu_pda[raw_smp_processor_id()].ex_imask, fp->syscfg); |
| 880 | if (fp->ipend & EVT_IRPTEN) |
Robin Getz | d28cff4 | 2010-03-11 19:26:38 +0000 | [diff] [blame] | 881 | pr_notice(" Global Interrupts Disabled (IPEND[4])\n"); |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 882 | if (!(cpu_pda[raw_smp_processor_id()].ex_imask & (EVT_IVG13 | EVT_IVG12 | EVT_IVG11 | |
| 883 | EVT_IVG10 | EVT_IVG9 | EVT_IVG8 | EVT_IVG7 | EVT_IVTMR))) |
Robin Getz | d28cff4 | 2010-03-11 19:26:38 +0000 | [diff] [blame] | 884 | pr_notice(" Peripheral interrupts masked off\n"); |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 885 | if (!(cpu_pda[raw_smp_processor_id()].ex_imask & (EVT_IVG15 | EVT_IVG14))) |
Robin Getz | d28cff4 | 2010-03-11 19:26:38 +0000 | [diff] [blame] | 886 | pr_notice(" Kernel interrupts masked off\n"); |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 887 | if ((fp->seqstat & SEQSTAT_EXCAUSE) == VEC_HWERR) { |
Robin Getz | d28cff4 | 2010-03-11 19:26:38 +0000 | [diff] [blame] | 888 | pr_notice(" HWERRCAUSE: 0x%lx\n", |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 889 | (fp->seqstat & SEQSTAT_HWERRCAUSE) >> 14); |
| 890 | #ifdef EBIU_ERRMST |
| 891 | /* If the error was from the EBIU, print it out */ |
| 892 | if (bfin_read_EBIU_ERRMST() & CORE_ERROR) { |
Robin Getz | d28cff4 | 2010-03-11 19:26:38 +0000 | [diff] [blame] | 893 | pr_notice(" EBIU Error Reason : 0x%04x\n", |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 894 | bfin_read_EBIU_ERRMST()); |
Robin Getz | d28cff4 | 2010-03-11 19:26:38 +0000 | [diff] [blame] | 895 | pr_notice(" EBIU Error Address : 0x%08x\n", |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 896 | bfin_read_EBIU_ERRADD()); |
| 897 | } |
| 898 | #endif |
| 899 | } |
Robin Getz | d28cff4 | 2010-03-11 19:26:38 +0000 | [diff] [blame] | 900 | pr_notice(" EXCAUSE : 0x%lx\n", |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 901 | fp->seqstat & SEQSTAT_EXCAUSE); |
| 902 | for (i = 2; i <= 15 ; i++) { |
| 903 | if (fp->ipend & (1 << i)) { |
| 904 | if (i != 4) { |
| 905 | decode_address(buf, bfin_read32(EVT0 + 4*i)); |
Robin Getz | d28cff4 | 2010-03-11 19:26:38 +0000 | [diff] [blame] | 906 | pr_notice(" physical IVG%i asserted : %s\n", i, buf); |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 907 | } else |
Robin Getz | d28cff4 | 2010-03-11 19:26:38 +0000 | [diff] [blame] | 908 | pr_notice(" interrupts disabled\n"); |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 909 | } |
| 910 | } |
| 911 | |
| 912 | /* if no interrupts are going off, don't print this out */ |
| 913 | if (fp->ipend & ~0x3F) { |
| 914 | for (i = 0; i < (NR_IRQS - 1); i++) { |
Thomas Gleixner | 28a283a | 2011-03-28 13:50:50 +0200 | [diff] [blame] | 915 | struct irq_desc *desc = irq_to_desc(i); |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 916 | if (!in_atomic) |
Thomas Gleixner | 28a283a | 2011-03-28 13:50:50 +0200 | [diff] [blame] | 917 | raw_spin_lock_irqsave(&desc->lock, flags); |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 918 | |
Thomas Gleixner | 28a283a | 2011-03-28 13:50:50 +0200 | [diff] [blame] | 919 | action = desc->action; |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 920 | if (!action) |
| 921 | goto unlock; |
| 922 | |
| 923 | decode_address(buf, (unsigned int)action->handler); |
Robin Getz | d28cff4 | 2010-03-11 19:26:38 +0000 | [diff] [blame] | 924 | pr_notice(" logical irq %3d mapped : %s", i, buf); |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 925 | for (action = action->next; action; action = action->next) { |
| 926 | decode_address(buf, (unsigned int)action->handler); |
Robin Getz | d28cff4 | 2010-03-11 19:26:38 +0000 | [diff] [blame] | 927 | pr_cont(", %s", buf); |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 928 | } |
Robin Getz | d28cff4 | 2010-03-11 19:26:38 +0000 | [diff] [blame] | 929 | pr_cont("\n"); |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 930 | unlock: |
| 931 | if (!in_atomic) |
Thomas Gleixner | 28a283a | 2011-03-28 13:50:50 +0200 | [diff] [blame] | 932 | raw_spin_unlock_irqrestore(&desc->lock, flags); |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 933 | } |
| 934 | } |
| 935 | |
| 936 | decode_address(buf, fp->rete); |
Robin Getz | d28cff4 | 2010-03-11 19:26:38 +0000 | [diff] [blame] | 937 | pr_notice(" RETE: %s\n", buf); |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 938 | decode_address(buf, fp->retn); |
Robin Getz | d28cff4 | 2010-03-11 19:26:38 +0000 | [diff] [blame] | 939 | pr_notice(" RETN: %s\n", buf); |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 940 | decode_address(buf, fp->retx); |
Robin Getz | d28cff4 | 2010-03-11 19:26:38 +0000 | [diff] [blame] | 941 | pr_notice(" RETX: %s\n", buf); |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 942 | decode_address(buf, fp->rets); |
Robin Getz | d28cff4 | 2010-03-11 19:26:38 +0000 | [diff] [blame] | 943 | pr_notice(" RETS: %s\n", buf); |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 944 | decode_address(buf, fp->pc); |
Robin Getz | d28cff4 | 2010-03-11 19:26:38 +0000 | [diff] [blame] | 945 | pr_notice(" PC : %s\n", buf); |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 946 | |
| 947 | if (((long)fp->seqstat & SEQSTAT_EXCAUSE) && |
| 948 | (((long)fp->seqstat & SEQSTAT_EXCAUSE) != VEC_HWERR)) { |
| 949 | decode_address(buf, cpu_pda[cpu].dcplb_fault_addr); |
Robin Getz | d28cff4 | 2010-03-11 19:26:38 +0000 | [diff] [blame] | 950 | pr_notice("DCPLB_FAULT_ADDR: %s\n", buf); |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 951 | decode_address(buf, cpu_pda[cpu].icplb_fault_addr); |
Robin Getz | d28cff4 | 2010-03-11 19:26:38 +0000 | [diff] [blame] | 952 | pr_notice("ICPLB_FAULT_ADDR: %s\n", buf); |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 953 | } |
| 954 | |
Robin Getz | d28cff4 | 2010-03-11 19:26:38 +0000 | [diff] [blame] | 955 | pr_notice("PROCESSOR STATE:\n"); |
| 956 | pr_notice(" R0 : %08lx R1 : %08lx R2 : %08lx R3 : %08lx\n", |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 957 | fp->r0, fp->r1, fp->r2, fp->r3); |
Robin Getz | d28cff4 | 2010-03-11 19:26:38 +0000 | [diff] [blame] | 958 | pr_notice(" R4 : %08lx R5 : %08lx R6 : %08lx R7 : %08lx\n", |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 959 | fp->r4, fp->r5, fp->r6, fp->r7); |
Robin Getz | d28cff4 | 2010-03-11 19:26:38 +0000 | [diff] [blame] | 960 | pr_notice(" P0 : %08lx P1 : %08lx P2 : %08lx P3 : %08lx\n", |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 961 | fp->p0, fp->p1, fp->p2, fp->p3); |
Robin Getz | d28cff4 | 2010-03-11 19:26:38 +0000 | [diff] [blame] | 962 | pr_notice(" P4 : %08lx P5 : %08lx FP : %08lx SP : %08lx\n", |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 963 | fp->p4, fp->p5, fp->fp, (long)fp); |
Robin Getz | d28cff4 | 2010-03-11 19:26:38 +0000 | [diff] [blame] | 964 | pr_notice(" LB0: %08lx LT0: %08lx LC0: %08lx\n", |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 965 | fp->lb0, fp->lt0, fp->lc0); |
Robin Getz | d28cff4 | 2010-03-11 19:26:38 +0000 | [diff] [blame] | 966 | pr_notice(" LB1: %08lx LT1: %08lx LC1: %08lx\n", |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 967 | fp->lb1, fp->lt1, fp->lc1); |
Robin Getz | d28cff4 | 2010-03-11 19:26:38 +0000 | [diff] [blame] | 968 | pr_notice(" B0 : %08lx L0 : %08lx M0 : %08lx I0 : %08lx\n", |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 969 | fp->b0, fp->l0, fp->m0, fp->i0); |
Robin Getz | d28cff4 | 2010-03-11 19:26:38 +0000 | [diff] [blame] | 970 | pr_notice(" B1 : %08lx L1 : %08lx M1 : %08lx I1 : %08lx\n", |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 971 | fp->b1, fp->l1, fp->m1, fp->i1); |
Robin Getz | d28cff4 | 2010-03-11 19:26:38 +0000 | [diff] [blame] | 972 | pr_notice(" B2 : %08lx L2 : %08lx M2 : %08lx I2 : %08lx\n", |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 973 | fp->b2, fp->l2, fp->m2, fp->i2); |
Robin Getz | d28cff4 | 2010-03-11 19:26:38 +0000 | [diff] [blame] | 974 | pr_notice(" B3 : %08lx L3 : %08lx M3 : %08lx I3 : %08lx\n", |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 975 | fp->b3, fp->l3, fp->m3, fp->i3); |
Robin Getz | d28cff4 | 2010-03-11 19:26:38 +0000 | [diff] [blame] | 976 | pr_notice("A0.w: %08lx A0.x: %08lx A1.w: %08lx A1.x: %08lx\n", |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 977 | fp->a0w, fp->a0x, fp->a1w, fp->a1x); |
| 978 | |
Robin Getz | d28cff4 | 2010-03-11 19:26:38 +0000 | [diff] [blame] | 979 | pr_notice("USP : %08lx ASTAT: %08lx\n", |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 980 | rdusp(), fp->astat); |
| 981 | |
Robin Getz | d28cff4 | 2010-03-11 19:26:38 +0000 | [diff] [blame] | 982 | pr_notice("\n"); |
Robin Getz | 2a12c46 | 2010-03-11 16:24:18 +0000 | [diff] [blame] | 983 | } |