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tg3: extend PTP gettime function to read system clock

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This adds support for the PTP_SYS_OFFSET_EXTENDED ioctl.

Cc: Richard Cochran <richardcochran@gmail.com>
Cc: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: Miroslav Lichvar <mlichvar@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Miroslav Lichvar 2018-11-09 11:14:49 +01:00 committed by David S. Miller
parent 018ed23ddc
commit 6fe42e228d
1 changed files with 13 additions and 6 deletions
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19
drivers/net/ethernet/broadcom/tg3.c
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@ -6135,10 +6135,16 @@ static int tg3_setup_phy(struct tg3 *tp, bool force_reset)
}
/* tp->lock must be held */
static u64 tg3_refclk_read(struct tg3 *tp)
static u64 tg3_refclk_read(struct tg3 *tp, struct ptp_system_timestamp *sts)
{
u64 stamp = tr32(TG3_EAV_REF_CLCK_LSB);
return stamp | (u64)tr32(TG3_EAV_REF_CLCK_MSB) << 32;
u64 stamp;
ptp_read_system_prets(sts);
stamp = tr32(TG3_EAV_REF_CLCK_LSB);
ptp_read_system_postts(sts);
stamp |= (u64)tr32(TG3_EAV_REF_CLCK_MSB) << 32;
return stamp;
}
/* tp->lock must be held */
@ -6229,13 +6235,14 @@ static int tg3_ptp_adjtime(struct ptp_clock_info *ptp, s64 delta)
return 0;
}
static int tg3_ptp_gettime(struct ptp_clock_info *ptp, struct timespec64 *ts)
static int tg3_ptp_gettimex(struct ptp_clock_info *ptp, struct timespec64 *ts,
struct ptp_system_timestamp *sts)
{
u64 ns;
struct tg3 *tp = container_of(ptp, struct tg3, ptp_info);
tg3_full_lock(tp, 0);
ns = tg3_refclk_read(tp);
ns = tg3_refclk_read(tp, sts);
ns += tp->ptp_adjust;
tg3_full_unlock(tp);
@ -6330,7 +6337,7 @@ static const struct ptp_clock_info tg3_ptp_caps = {
.pps = 0,
.adjfreq = tg3_ptp_adjfreq,
.adjtime = tg3_ptp_adjtime,
.gettime64 = tg3_ptp_gettime,
.gettimex64 = tg3_ptp_gettimex,
.settime64 = tg3_ptp_settime,
.enable = tg3_ptp_enable,
};