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| author | Miroslav Lichvar <mlichvar@redhat.com> | 2018-11-09 11:14:46 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-11-09 19:43:51 -0800 |
| commit | 98942d70538a16cdc06389456a4cd0ea62559432 (patch) | |
| tree | c83e080554d6f656165214af617a574b4167c4fd /drivers/net/ethernet/intel/e1000e/ptp.c | |
| parent | 916444df305ef5b8a7d824aac7dd2aeba3a4db3b (diff) | |
| download | linux-98942d70538a16cdc06389456a4cd0ea62559432.tar.gz | |
e1000e: extend PTP gettime function to read system clock
This adds support for the PTP_SYS_OFFSET_EXTENDED ioctl. Cc: Richard Cochran <richardcochran@gmail.com> Cc: Jacob Keller <jacob.e.keller@intel.com> Cc: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: Miroslav Lichvar <mlichvar@redhat.com> Acked-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/intel/e1000e/ptp.c')
| -rw-r--r-- | drivers/net/ethernet/intel/e1000e/ptp.c | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/drivers/net/ethernet/intel/e1000e/ptp.c b/drivers/net/ethernet/intel/e1000e/ptp.c index e1f821edbc21..1a4c65d9feb4 100644 --- a/drivers/net/ethernet/intel/e1000e/ptp.c +++ b/drivers/net/ethernet/intel/e1000e/ptp.c @@ -161,14 +161,18 @@ static int e1000e_phc_getcrosststamp(struct ptp_clock_info *ptp, #endif/*CONFIG_E1000E_HWTS*/ /** - * e1000e_phc_gettime - Reads the current time from the hardware clock + * e1000e_phc_gettimex - Reads the current time from the hardware clock and + * system clock * @ptp: ptp clock structure - * @ts: timespec structure to hold the current time value + * @ts: timespec structure to hold the current PHC time + * @sts: structure to hold the current system time * * Read the timecounter and return the correct value in ns after converting * it into a struct timespec. **/ -static int e1000e_phc_gettime(struct ptp_clock_info *ptp, struct timespec64 *ts) +static int e1000e_phc_gettimex(struct ptp_clock_info *ptp, + struct timespec64 *ts, + struct ptp_system_timestamp *sts) { struct e1000_adapter *adapter = container_of(ptp, struct e1000_adapter, ptp_clock_info); @@ -177,8 +181,8 @@ static int e1000e_phc_gettime(struct ptp_clock_info *ptp, struct timespec64 *ts) spin_lock_irqsave(&adapter->systim_lock, flags); - /* Use timecounter_cyc2time() to allow non-monotonic SYSTIM readings */ - cycles = adapter->cc.read(&adapter->cc); + /* NOTE: Non-monotonic SYSTIM readings may be returned */ + cycles = e1000e_read_systim(adapter, sts); ns = timecounter_cyc2time(&adapter->tc, cycles); spin_unlock_irqrestore(&adapter->systim_lock, flags); @@ -258,7 +262,7 @@ static const struct ptp_clock_info e1000e_ptp_clock_info = { .pps = 0, .adjfreq = e1000e_phc_adjfreq, .adjtime = e1000e_phc_adjtime, - .gettime64 = e1000e_phc_gettime, + .gettimex64 = e1000e_phc_gettimex, .settime64 = e1000e_phc_settime, .enable = e1000e_phc_enable, }; |