/******************************************************************
* Utility function to retrieve full crash log from CP via simple
* handshake protocol.
*
*
********************************************************************/
void DUMP_CP_assert_log(void)
{
UInt32 t1, i, size, retryCount;
UInt8 *p;
UInt32 packetCount = 0;
void __iomem *AssertLogVAddr = NULL;
struct file *sdDumpFile = NULL;
int cpReset = SmLocalControl.SmControl->CrashCode ==
IPC_CP_SILENT_RESET_READY;
/* put logging driver into crash dump mode; messages will be sent
* straight out to MTT via RNDIS (or dump file) instead of buffering
* in RING buffer (flood of crash dump info overloads ring buffer
* otherwise,and we lose a lot of crash dump info)
* NOTE: crash dump is put into SD by default; if SD file fails to open,
* then we'll try sending it out RNDIS */
BCMLOG_StartCpCrashDump(sdDumpFile, cpReset);
/* only grab RAM dump for CP reset case */
if (!cpReset) {
retryCount = 0;
while (1) {
t1 = TIMER_GetValue();
/* signal to CP that we're ready to rx crash log... */
SmLocalControl.SmControl->CrashCode =
IPC_AP_CLEAR_TO_SEND;
/* wait for CP to "dump"; CrashCode field will be
* set to physical address of current assert buf */
while (SmLocalControl.SmControl->CrashCode ==
IPC_AP_CLEAR_TO_SEND) {
for (i = 0; i < 256; i++)
;
if (TIMER_GetValue() - t1 >
TICKS_ONE_SECOND * 20)
break;
}
/* check for time out */
if (SmLocalControl.SmControl->CrashCode ==
IPC_AP_CLEAR_TO_SEND) {
if (retryCount < MAX_CP_DUMP_RETRIES) {
retryCount++;
IPC_DEBUG(
DBG_TRACE,
"timeout %d, trying again..\n",
(int)retryCount);
continue;
} else {
/* no response from CP,
* so get out of here
*/
IPC_DEBUG(
DBG_ERROR,
"Abort --- max retries %d reached\n",
(int)retryCount);
break;
}
}
/* reset retry counter */
retryCount = 0;
/* get virtual address of CP assert buffer */
AssertLogVAddr = ioremap_nocache(
(UInt32)
(SmLocalControl.SmControl->CrashCode),
ASSERT_BUF_SIZE);
if (NULL == AssertLogVAddr) {
IPC_DEBUG(DBG_ERROR,
"ioremap_nocache failed in DUMP_CP_assert_log\n");
break;
}
p = (UInt8 *)AssertLogVAddr;
/* number of bytes in assert buffer */
size = (p[0] << 8) + p[1];
/* size of 0 means CP is done dumping assert log */
if (size == 0) {
IPC_DEBUG(DBG_ERROR,
"assert log size 0, exiting, packetCount:0x%x\n",
(int)packetCount);
iounmap(AssertLogVAddr);
AssertLogVAddr = NULL;
break;
}
/* sanity check for too beaucoup... */
if (size > ASSERT_BUF_SIZE - 2) {
IPC_DEBUG(DBG_ERROR,
"Abort --- improper size [%08x]=%d\n",
SmLocalControl.SmControl->CrashCode,
(int)size);
iounmap(AssertLogVAddr);
AssertLogVAddr = NULL;
break;
}
/* send packet out to log
* (MTT via RNDIS or crash dump file)
*/
BCMLOG_HandleCpCrashDumpData((const char *)(p + 2),
size);
packetCount++;
iounmap(AssertLogVAddr);
AssertLogVAddr = NULL;
}
}
RpcDbgDumpHistoryLogging(2, 1);
IPC_DEBUG(DBG_ERROR, "Starting CP RAM dump - do not power down...\n");
/* dump all CP memory to log */
DUMP_CPMemoryByList(dumped_crash_summary_ptr->mem_dump);
IPC_DEBUG(DBG_ERROR, "CP RAM dump complete\n");
/* resume normal logging activities... */
BCMLOG_EndCpCrashDump();
if (BCMLOG_OUTDEV_SDCARD == BCMLOG_GetCpCrashLogDevice())
sys_sync();
IPC_DEBUG(DBG_ERROR, "CP crash dump complete\n");
if ((BCMLOG_OUTDEV_SDCARD == BCMLOG_GetCpCrashLogDevice())
&& cp_crashed == 1 && !cpReset)
abort();
}
/**
* Utility function to retrieve full crash log from CP via simple handshake
* protocol.
*
*
********************************************************************************/
void DUMP_CP_assert_log(void)
{
UInt32 t0, t1, i, size, retryCount;
UInt8 *p;
UInt32 packetCount = 0;
void __iomem *AssertLogVAddr = NULL;
struct file* sdDumpFile = NULL;
mm_segment_t oldfs;
struct timespec ts;
struct rtc_time tm;
char assertFileName[CP_CRASH_DUMP_MAX_LEN];
extern void abort(void);
// need to tell kernel that pointers from within the
// kernel address space are valid (needed to do
// file ops from kernel)
oldfs = get_fs();
set_fs (KERNEL_DS);
if( BCMLOG_CPCRASH_SDCARD == BCMLOG_GetCpCrashDumpDevice() )
{
// get current time
getnstimeofday(&ts);
rtc_time_to_tm(ts.tv_sec, &tm);
snprintf(assertFileName, CP_CRASH_DUMP_MAX_LEN,
"%s%s%d_%02d_%02d_%02d_%02d_%02d%s",
CP_CRASH_DUMP_DIR,
CP_CRASH_DUMP_BASE_FILE_NAME,
tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday,
tm.tm_hour, tm.tm_min, tm.tm_sec,
CP_CRASH_DUMP_FILE_EXT );
sdDumpFile = filp_open( assertFileName, O_WRONLY|O_TRUNC|O_LARGEFILE|O_CREAT, 666);
if ( IS_ERR(sdDumpFile) )
{
IPC_DEBUG(DBG_ERROR,"failed to open sdDumpFile %s\n", assertFileName);
sdDumpFile = NULL;
}
else
{
IPC_DEBUG(DBG_ERROR,"sdDumpFile %s opened OK\n",assertFileName);
}
}
// put logging driver into crash dump mode; messages will be sent straight out to MTT via
// RNDIS (or dump file) instead of buffering in RING buffer (flood of crash dump info
// overloads ring buffer otherwise, and we lose a lot of crash dump info)
// NOTE: crash dump is put into SD by default; if SD file fails to open, then we'll try
// sending it out RNDIS
BCMLOG_StartCpCrashDump( sdDumpFile );
retryCount = 0;
t0 = TIMER_GetValue();
while (1)
{
t1 = TIMER_GetValue();
// signal to CP that we're ready to receive crash log...
SmLocalControl.SmControl->CrashCode = IPC_AP_CLEAR_TO_SEND;
// wait for CP to "dump"; CrashCode field will be set to physical address of current assert buf
while (SmLocalControl.SmControl->CrashCode == IPC_AP_CLEAR_TO_SEND)
{
for (i=0; i<256; i++);
if (TIMER_GetValue() - t1 > TICKS_ONE_SECOND * 20) break;
}
// check for time out
if (SmLocalControl.SmControl->CrashCode == IPC_AP_CLEAR_TO_SEND)
{
if ( retryCount < MAX_CP_DUMP_RETRIES )
{
retryCount++;
IPC_DEBUG(DBG_ERROR,"timeout %d, trying again...\n", (int)retryCount);
continue;
}
else
{
// no response from CP, so get out of here
IPC_DEBUG(DBG_ERROR,"Abort --- max retries %d reached\n", (int)retryCount);
break;
}
}
// reset retry counter
retryCount = 0;
// get virtual address of CP assert buffer
AssertLogVAddr = ioremap_nocache((UInt32)(SmLocalControl.SmControl->CrashCode), ASSERT_BUF_SIZE);
if(NULL == AssertLogVAddr)
{
IPC_DEBUG(DBG_ERROR, "ioremap_nocache failed in DUMP_CP_assert_log\n");
break;
}
p = (UInt8 *)AssertLogVAddr;
// number of bytes in assert buffer
size = (p[0] << 8) + p[1];
// size of 0 means CP is done dumping assert log
if (size == 0)
{
IPC_DEBUG(DBG_INFO, "assert log size 0, exiting, packetCount:0x%x\n", (int)packetCount);
iounmap(AssertLogVAddr);
AssertLogVAddr = NULL;
break;
}
// sanity check for too beaucoup...
if (size > ASSERT_BUF_SIZE - 2)
{
IPC_DEBUG(DBG_ERROR, "Abort --- improper size [%08x]=%d\n", SmLocalControl.SmControl->CrashCode, (int)size);
iounmap(AssertLogVAddr);
AssertLogVAddr = NULL;
break;
}
// send packet out to log (MTT via RNDIS or crash dump file)
BCMLOG_HandleCpCrashDumpData( (const char*)(p+2), size );
packetCount++;
iounmap(AssertLogVAddr);
AssertLogVAddr = NULL;
#if 0
// **FIXME** this is Nucleus timeout code - do we want something similar
// for Android? Maybe if we get to the point of restarting CP with
// restarting AP
if (TIMER_GetValue() - t0 > TICKS_ONE_SECOND * 10 * 60)
{
IPC_DEBUG(DBG_ERROR,"Abort --- CP assertion log too long\n");
break;
}
#endif
}
IPC_DEBUG(DBG_ERROR,"Starting CP RAM dump - do not power down...\n");
// dump all CP memory to log
DUMP_CPMemoryByList( dumped_crash_summary_ptr->mem_dump );
IPC_DEBUG(DBG_ERROR,"CP RAM dump complete\n");
// resume normal logging activities...
BCMLOG_EndCpCrashDump( );
if ( sdDumpFile )
{
filp_close( sdDumpFile ,NULL );
}
set_fs (oldfs);
sys_sync();
IPC_DEBUG(DBG_ERROR,"CP crash dump complete\n");
if (BCMLOG_CPCRASH_MTD != BCMLOG_GetCpCrashDumpDevice())
abort();
#ifdef CONFIG_BRCM_KPANIC_UI_IND
else
lcdc_disp_img(IMG_INDEX_END_DUMP); //parameter 1: Draw the Kpanic Dump complete picture
#endif
}
