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| author | ppaidipe@linux.vnet.ibm.com <ppaidipe@linux.vnet.ibm.com> | 2017-04-03 07:27:21 +0530 |
|---|---|---|
| committer | Stewart Smith <stewart@linux.vnet.ibm.com> | 2017-06-14 14:30:31 +1000 |
| commit | 447ccc4de529f001271fd4dfd78401bc4c90832e (patch) | |
| tree | c6a240c7ae7606fddb2bd265a938e93815ee4d6a /hw | |
| parent | 740d00b1036188c6e248418fb0a13faf14723e7a (diff) | |
| download | skiboot-447ccc4de529f001271fd4dfd78401bc4c90832e.zip skiboot-447ccc4de529f001271fd4dfd78401bc4c90832e.tar.gz skiboot-447ccc4de529f001271fd4dfd78401bc4c90832e.tar.bz2 | |
hw/fsp/rtc: read/write cached rtc tod on fsp hir.
Currently fsp-rtc reads/writes the cached RTC TOD on an fsp
reset. Use latest fsp_in_rr() function to properly read the cached rtc
value when fsp reset initiated by the hir.
Below is the kernel trace when we set hw clock, when hir process starts.
[ 1727.775824] NMI watchdog: BUG: soft lockup - CPU#57 stuck for 23s! [hwclock:7688]
[ 1727.775856] Modules linked in: vmx_crypto ibmpowernv ipmi_powernv uio_pdrv_genirq ipmi_devintf powernv_op_panel uio ipmi_msghandler powernv_rng leds_powernv ip_tables x_tables autofs4 ses enclosure scsi_transport_sas crc32c_vpmsum lpfc ipr tg3 scsi_transport_fc
[ 1727.775883] CPU: 57 PID: 7688 Comm: hwclock Not tainted 4.10.0-14-generic #16-Ubuntu
[ 1727.775883] task: c000000fdfdc8400 task.stack: c000000fdfef4000
[ 1727.775884] NIP: c00000000090540c LR: c0000000000846f4 CTR: 000000003006dd70
[ 1727.775885] REGS: c000000fdfef79a0 TRAP: 0901 Not tainted (4.10.0-14-generic)
[ 1727.775886] MSR: 9000000000009033 <SF,HV,EE,ME,IR,DR,RI,LE>
[ 1727.775889] CR: 28024442 XER: 20000000
[ 1727.775890] CFAR: c00000000008472c SOFTE: 1
GPR00: 0000000030005128 c000000fdfef7c20 c00000000144c900 fffffffffffffff4
GPR04: 0000000028024442 c00000000090540c 9000000000009033 0000000000000000
GPR08: 0000000000000000 0000000031fc4000 c000000000084710 9000000000001003
GPR12: c0000000000846e8 c00000000fba0100
[ 1727.775897] NIP [c00000000090540c] opal_set_rtc_time+0x4c/0xb0
[ 1727.775899] LR [c0000000000846f4] opal_return+0xc/0x48
[ 1727.775899] Call Trace:
[ 1727.775900] [c000000fdfef7c20] [c00000000090540c] opal_set_rtc_time+0x4c/0xb0 (unreliable)
[ 1727.775901] [c000000fdfef7c60] [c000000000900828] rtc_set_time+0xb8/0x1b0
[ 1727.775903] [c000000fdfef7ca0] [c000000000902364] rtc_dev_ioctl+0x454/0x630
[ 1727.775904] [c000000fdfef7d40] [c00000000035b1f4] do_vfs_ioctl+0xd4/0x8c0
[ 1727.775906] [c000000fdfef7de0] [c00000000035bab4] SyS_ioctl+0xd4/0xf0
[ 1727.775907] [c000000fdfef7e30] [c00000000000b184] system_call+0x38/0xe0
[ 1727.775908] Instruction dump:
[ 1727.775909] f821ffc1 39200000 7c832378 91210028 38a10020 39200000 38810028 f9210020
[ 1727.775911] 4bfffe6d e8810020 80610028 4b77f61d <60000000> 7c7f1b78 3860000a 2fbffff4
This is found when executing the testcase
https://github.com/open-power/op-test-framework/blob/master/testcases/fspresetReload.py
With this fix ran fsp hir torture testcase in the above test
which is working fine.
Signed-off-by: Pridhiviraj Paidipeddi <ppaidipe@linux.vnet.ibm.com>
Acked-by: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com>
Reviewed-by: Vasant Hegde <hegdevasant@linux.vnet.ibm.com>
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
Diffstat (limited to 'hw')
| -rw-r--r-- | hw/fsp/fsp-rtc.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/hw/fsp/fsp-rtc.c b/hw/fsp/fsp-rtc.c index 24565c2..b41e295 100644 --- a/hw/fsp/fsp-rtc.c +++ b/hw/fsp/fsp-rtc.c @@ -280,7 +280,7 @@ static int64_t fsp_opal_rtc_read(uint32_t *year_month_day, } /* During R/R of FSP, read cached TOD */ - if (fsp_in_reset) { + if (fsp_in_rr()) { if (rtc_tod_state == RTC_TOD_VALID) { rtc_cache_get_datetime(year_month_day, hour_minute_second_millisecond); @@ -362,7 +362,7 @@ static int64_t fsp_rtc_send_write_request(uint32_t year_month_day, } prlog(PR_TRACE, " -> req at %p\n", msg); - if (fsp_in_reset) { + if (fsp_in_rr()) { datetime_to_tm(msg->data.words[0], (u64) msg->data.words[1] << 32, &tm); rtc_cache_update(&tm); |