diff options
| author | Naveen Mamindlapalli <naveenm@marvell.com> | 2022-09-10 13:24:13 +0530 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2022-09-17 20:13:41 +0100 |
| commit | a8025e7946a2b18c4ac17b36fde528d2f6262bdd (patch) | |
| tree | 57d08db374a7aa57da15d5f8dbff45107ab2bf30 /drivers/net/ethernet/marvell/octeontx2/af | |
| parent | 5947b7f794ca5b96fa097d8d73259aaf18878c31 (diff) | |
| download | linux-a8025e7946a2b18c4ac17b36fde528d2f6262bdd.tar.gz | |
octeontx2-af: return correct ptp timestamp for CN10K silicon
The MIO_PTP_TIMESTAMP format has been changed in CN10K silicon
family. The upper 32-bits represents seconds and lower 32-bits
represents nanoseconds. This patch returns nanosecond timestamp
to NIX PF driver.
Signed-off-by: Naveen Mamindlapalli <naveenm@marvell.com>
Signed-off-by: Sunil Kovvuri Goutham <sgoutham@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/marvell/octeontx2/af')
| -rw-r--r-- | drivers/net/ethernet/marvell/octeontx2/af/ptp.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/ptp.c b/drivers/net/ethernet/marvell/octeontx2/af/ptp.c index 67a6821d2dff..b2c3527fe665 100644 --- a/drivers/net/ethernet/marvell/octeontx2/af/ptp.c +++ b/drivers/net/ethernet/marvell/octeontx2/af/ptp.c @@ -56,6 +56,11 @@ static struct ptp *first_ptp_block; static const struct pci_device_id ptp_id_table[]; +static bool is_ptp_dev_cn10k(struct ptp *ptp) +{ + return (ptp->pdev->device == PCI_DEVID_CN10K_PTP) ? true : false; +} + static bool cn10k_ptp_errata(struct ptp *ptp) { if (ptp->pdev->subsystem_device == PCI_SUBSYS_DEVID_CN10K_A_PTP || @@ -282,7 +287,14 @@ void ptp_start(struct ptp *ptp, u64 sclk, u32 ext_clk_freq, u32 extts) static int ptp_get_tstmp(struct ptp *ptp, u64 *clk) { - *clk = readq(ptp->reg_base + PTP_TIMESTAMP); + u64 timestamp; + + if (is_ptp_dev_cn10k(ptp)) { + timestamp = readq(ptp->reg_base + PTP_TIMESTAMP); + *clk = (timestamp >> 32) * NSEC_PER_SEC + (timestamp & 0xFFFFFFFF); + } else { + *clk = readq(ptp->reg_base + PTP_TIMESTAMP); + } return 0; } |