[7be6ad9] | 1 | /* $Id$ */ |
---|
| 2 | |
---|
[f774fc06] | 3 | /* |
---|
| 4 | * Authorship |
---|
| 5 | * ---------- |
---|
| 6 | * This software was created by |
---|
| 7 | * Till Straumann <strauman@slac.stanford.edu>, 5/2002, |
---|
| 8 | * Stanford Linear Accelerator Center, Stanford University. |
---|
| 9 | * |
---|
| 10 | * Acknowledgement of sponsorship |
---|
| 11 | * ------------------------------ |
---|
| 12 | * This software was produced by |
---|
| 13 | * the Stanford Linear Accelerator Center, Stanford University, |
---|
| 14 | * under Contract DE-AC03-76SFO0515 with the Department of Energy. |
---|
| 15 | * |
---|
| 16 | * Government disclaimer of liability |
---|
| 17 | * ---------------------------------- |
---|
| 18 | * Neither the United States nor the United States Department of Energy, |
---|
| 19 | * nor any of their employees, makes any warranty, express or implied, or |
---|
| 20 | * assumes any legal liability or responsibility for the accuracy, |
---|
| 21 | * completeness, or usefulness of any data, apparatus, product, or process |
---|
| 22 | * disclosed, or represents that its use would not infringe privately owned |
---|
| 23 | * rights. |
---|
| 24 | * |
---|
| 25 | * Stanford disclaimer of liability |
---|
| 26 | * -------------------------------- |
---|
| 27 | * Stanford University makes no representations or warranties, express or |
---|
| 28 | * implied, nor assumes any liability for the use of this software. |
---|
| 29 | * |
---|
| 30 | * Stanford disclaimer of copyright |
---|
| 31 | * -------------------------------- |
---|
| 32 | * Stanford University, owner of the copyright, hereby disclaims its |
---|
| 33 | * copyright and all other rights in this software. Hence, anyone may |
---|
| 34 | * freely use it for any purpose without restriction. |
---|
| 35 | * |
---|
| 36 | * Maintenance of notices |
---|
| 37 | * ---------------------- |
---|
| 38 | * In the interest of clarity regarding the origin and status of this |
---|
| 39 | * SLAC software, this and all the preceding Stanford University notices |
---|
| 40 | * are to remain affixed to any copy or derivative of this software made |
---|
| 41 | * or distributed by the recipient and are to be affixed to any copy of |
---|
| 42 | * software made or distributed by the recipient that contains a copy or |
---|
| 43 | * derivative of this software. |
---|
| 44 | * |
---|
| 45 | * ------------------ SLAC Software Notices, Set 4 OTT.002a, 2004 FEB 03 |
---|
| 46 | */ |
---|
[7be6ad9] | 47 | /* Copyright : |
---|
| 48 | * (C) S. Kate Feng <feng1@bnl.gov> 4/2004 modified it for MVME5500 |
---|
| 49 | */ |
---|
| 50 | |
---|
| 51 | #include <bsp.h> |
---|
| 52 | #include <bsp/vectors.h> |
---|
| 53 | #include <libcpu/raw_exception.h> |
---|
| 54 | #include <libcpu/spr.h> |
---|
| 55 | #include <bsp/pci.h> |
---|
| 56 | #include <rtems/bspIo.h> |
---|
| 57 | |
---|
| 58 | #include <bsp/bspException.h> |
---|
| 59 | |
---|
| 60 | #define SRR1_TEA_EXC (1<<(31-13)) |
---|
| 61 | #define SRR1_MCP_EXC (1<<(31-12)) |
---|
| 62 | |
---|
[6771a9e7] | 63 | extern void |
---|
| 64 | BSP_printStackTrace(BSP_Exception_frame* excPtr); |
---|
[7be6ad9] | 65 | |
---|
| 66 | |
---|
[6771a9e7] | 67 | extern void |
---|
[83e392b4] | 68 | bsp_reset(void); |
---|
[7be6ad9] | 69 | |
---|
| 70 | static volatile BSP_ExceptionExtension BSP_exceptionExtension = 0; |
---|
| 71 | |
---|
| 72 | BSP_ExceptionExtension |
---|
| 73 | BSP_exceptionHandlerInstall(BSP_ExceptionExtension e) |
---|
| 74 | { |
---|
| 75 | volatile BSP_ExceptionExtension test; |
---|
| 76 | if ( RTEMS_SUCCESSFUL != rtems_task_variable_get(RTEMS_SELF, (void*)&BSP_exceptionExtension, (void**)&test) ) { |
---|
| 77 | /* not yet added */ |
---|
| 78 | rtems_task_variable_add(RTEMS_SELF, (void*)&BSP_exceptionExtension, 0); |
---|
| 79 | } |
---|
| 80 | test = BSP_exceptionExtension; |
---|
| 81 | BSP_exceptionExtension = e; |
---|
| 82 | return test; |
---|
| 83 | } |
---|
| 84 | |
---|
| 85 | void |
---|
| 86 | BSP_exceptionHandler(BSP_Exception_frame* excPtr) |
---|
| 87 | { |
---|
[f4a59e33] | 88 | uint32_t note; |
---|
[7be6ad9] | 89 | BSP_ExceptionExtension ext=0; |
---|
| 90 | rtems_id id=0; |
---|
| 91 | int recoverable = 0; |
---|
| 92 | char *fmt="Uhuuuh, Exception %d in unknown task???\n"; |
---|
| 93 | int quiet=0; |
---|
| 94 | |
---|
| 95 | if (!quiet) printk("In BSP_exceptionHandler()\n"); |
---|
| 96 | /* If we are in interrupt context, we are in trouble - skip the user |
---|
| 97 | * hook and panic |
---|
| 98 | */ |
---|
| 99 | if (rtems_interrupt_is_in_progress()) { |
---|
| 100 | fmt="Aieeh, Exception %d in interrupt handler\n"; |
---|
| 101 | } else if ( !_Thread_Executing) { |
---|
| 102 | fmt="Aieeh, Exception %d in initialization code\n"; |
---|
| 103 | } else { |
---|
| 104 | /* retrieve the notepad which possibly holds an extention pointer */ |
---|
| 105 | if (RTEMS_SUCCESSFUL==rtems_task_ident(RTEMS_SELF,RTEMS_LOCAL,&id) && |
---|
| 106 | #if 0 |
---|
| 107 | /* Must not use a notepad due to unknown initial value (notepad memory is allocated from the |
---|
| 108 | * workspace)! |
---|
| 109 | */ |
---|
| 110 | RTEMS_SUCCESSFUL==rtems_task_get_note(id, BSP_EXCEPTION_NOTEPAD, ¬e) |
---|
| 111 | #else |
---|
| 112 | RTEMS_SUCCESSFUL==rtems_task_variable_get(id, (void*)&BSP_exceptionExtension, (void**)¬e) |
---|
| 113 | #endif |
---|
| 114 | ) { |
---|
| 115 | ext = (BSP_ExceptionExtension)note; |
---|
| 116 | if (ext) |
---|
| 117 | quiet=ext->quiet; |
---|
| 118 | if (!quiet) { |
---|
| 119 | printk("Task (Id 0x%08x) got ",id); |
---|
| 120 | } |
---|
| 121 | fmt="exception %d\n"; |
---|
| 122 | } |
---|
| 123 | } |
---|
| 124 | |
---|
| 125 | if (ext && ext->lowlevelHook && ext->lowlevelHook(excPtr,ext,0)) { |
---|
| 126 | /* they did all the work and want us to do nothing! */ |
---|
| 127 | printk("they did all the work and want us to do nothing!\n"); |
---|
| 128 | return; |
---|
| 129 | } |
---|
| 130 | |
---|
| 131 | if (!quiet) { |
---|
| 132 | /* message about exception */ |
---|
| 133 | printk(fmt, excPtr->_EXC_number); |
---|
| 134 | /* register dump */ |
---|
| 135 | printk("\t Next PC or Address of fault = %x, ", excPtr->EXC_SRR0); |
---|
| 136 | printk("Mvme5500 Saved MSR = %x\n", excPtr->EXC_SRR1); |
---|
| 137 | printk("\t R0 = %08x", excPtr->GPR0); |
---|
| 138 | printk(" R1 = %08x", excPtr->GPR1); |
---|
| 139 | printk(" R2 = %08x", excPtr->GPR2); |
---|
| 140 | printk(" R3 = %08x\n", excPtr->GPR3); |
---|
| 141 | printk("\t R4 = %08x", excPtr->GPR4); |
---|
| 142 | printk(" R5 = %08x", excPtr->GPR5); |
---|
| 143 | printk(" R6 = %08x", excPtr->GPR6); |
---|
| 144 | printk(" R7 = %08x\n", excPtr->GPR7); |
---|
| 145 | printk("\t R8 = %08x", excPtr->GPR8); |
---|
| 146 | printk(" R9 = %08x", excPtr->GPR9); |
---|
| 147 | printk(" R10 = %08x", excPtr->GPR10); |
---|
| 148 | printk(" R11 = %08x\n", excPtr->GPR11); |
---|
| 149 | printk("\t R12 = %08x", excPtr->GPR12); |
---|
| 150 | printk(" R13 = %08x", excPtr->GPR13); |
---|
| 151 | printk(" R14 = %08x", excPtr->GPR14); |
---|
| 152 | printk(" R15 = %08x\n", excPtr->GPR15); |
---|
| 153 | printk("\t R16 = %08x", excPtr->GPR16); |
---|
| 154 | printk(" R17 = %08x", excPtr->GPR17); |
---|
| 155 | printk(" R18 = %08x", excPtr->GPR18); |
---|
| 156 | printk(" R19 = %08x\n", excPtr->GPR19); |
---|
| 157 | printk("\t R20 = %08x", excPtr->GPR20); |
---|
| 158 | printk(" R21 = %08x", excPtr->GPR21); |
---|
| 159 | printk(" R22 = %08x", excPtr->GPR22); |
---|
| 160 | printk(" R23 = %08x\n", excPtr->GPR23); |
---|
| 161 | printk("\t R24 = %08x", excPtr->GPR24); |
---|
| 162 | printk(" R25 = %08x", excPtr->GPR25); |
---|
| 163 | printk(" R26 = %08x", excPtr->GPR26); |
---|
| 164 | printk(" R27 = %08x\n", excPtr->GPR27); |
---|
| 165 | printk("\t R28 = %08x", excPtr->GPR28); |
---|
| 166 | printk(" R29 = %08x", excPtr->GPR29); |
---|
| 167 | printk(" R30 = %08x", excPtr->GPR30); |
---|
| 168 | printk(" R31 = %08x\n", excPtr->GPR31); |
---|
| 169 | printk("\t CR = %08x\n", excPtr->EXC_CR); |
---|
| 170 | printk("\t CTR = %08x\n", excPtr->EXC_CTR); |
---|
| 171 | printk("\t XER = %08x\n", excPtr->EXC_XER); |
---|
| 172 | printk("\t LR = %08x\n", excPtr->EXC_LR); |
---|
| 173 | printk("\t DAR = %08x\n", excPtr->EXC_DAR); |
---|
| 174 | |
---|
| 175 | BSP_printStackTrace(excPtr); |
---|
| 176 | } |
---|
| 177 | |
---|
| 178 | if (ASM_MACH_VECTOR == excPtr->_EXC_number) { |
---|
| 179 | /* ollah , we got a machine check - this could either |
---|
| 180 | * be a TEA, MCP or internal; let's see and provide more info |
---|
| 181 | */ |
---|
| 182 | if (!quiet) |
---|
| 183 | printk("Machine check; reason:"); |
---|
| 184 | if ( ! (excPtr->EXC_SRR1 & (SRR1_TEA_EXC | SRR1_MCP_EXC)) ) { |
---|
| 185 | if (!quiet) |
---|
| 186 | printk("SRR1\n"); |
---|
| 187 | } else { |
---|
| 188 | if (excPtr->EXC_SRR1 & (SRR1_TEA_EXC)) { |
---|
| 189 | if (!quiet) |
---|
| 190 | printk(" TEA"); |
---|
| 191 | } |
---|
| 192 | if (excPtr->EXC_SRR1 & (SRR1_MCP_EXC)) { |
---|
| 193 | unsigned long gerr; |
---|
| 194 | |
---|
| 195 | if (!quiet) printk(" MCP\n"); |
---|
| 196 | |
---|
| 197 | /* it's MCP; gather info from the host bridge */ |
---|
| 198 | gerr=_BSP_clear_hostbridge_errors(0,0); |
---|
| 199 | if (gerr&0x80000000) printk("GT64260 Parity error\n"); |
---|
| 200 | if (gerr&0x40000000) printk("GT64260 SysErr\n"); |
---|
| 201 | if ((!quiet) && (!gerr)) printk("GT64260 host bridge seems OK\n"); |
---|
| 202 | } |
---|
| 203 | } |
---|
| 204 | } else if (ASM_DEC_VECTOR == excPtr->_EXC_number) { |
---|
| 205 | recoverable = 1; |
---|
| 206 | } else if (ASM_SYS_VECTOR == excPtr->_EXC_number) { |
---|
| 207 | #ifdef TEST_RAW_EXCEPTION_CODE |
---|
| 208 | recoverable = 1; |
---|
| 209 | #else |
---|
| 210 | recoverable = 0; |
---|
| 211 | #endif |
---|
| 212 | } |
---|
| 213 | |
---|
| 214 | /* call them for a second time giving a chance to intercept |
---|
| 215 | * the task_suspend |
---|
| 216 | */ |
---|
| 217 | if (ext && ext->lowlevelHook && ext->lowlevelHook(excPtr, ext, 1)) |
---|
| 218 | return; |
---|
| 219 | |
---|
| 220 | if (!recoverable) { |
---|
| 221 | if (id) { |
---|
| 222 | /* if there's a highlevel hook, install it */ |
---|
| 223 | if (ext && ext->highlevelHook) { |
---|
[f4a59e33] | 224 | excPtr->EXC_SRR0 = (uint32_t)ext->highlevelHook; |
---|
| 225 | excPtr->GPR3 = (uint32_t)ext; |
---|
[7be6ad9] | 226 | return; |
---|
| 227 | } |
---|
| 228 | if (excPtr->EXC_SRR1 & MSR_FP) { |
---|
| 229 | /* thread dispatching is _not_ disabled at this point; hence |
---|
| 230 | * we must make sure we have the FPU enabled... |
---|
| 231 | */ |
---|
| 232 | _write_MSR( _read_MSR() | MSR_FP ); |
---|
| 233 | __asm__ __volatile__("isync"); |
---|
| 234 | } |
---|
| 235 | printk("unrecoverable exception!!! task %08x suspended\n",id); |
---|
| 236 | rtems_task_suspend(id); |
---|
| 237 | } else { |
---|
| 238 | printk("PANIC, rebooting...\n"); |
---|
[83e392b4] | 239 | bsp_reset(); |
---|
[7be6ad9] | 240 | } |
---|
| 241 | } |
---|
| 242 | } |
---|