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| author | Nithin Dabilpuram <ndabilpuram@marvell.com> | 2024-01-08 08:30:36 +0100 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2024-01-12 01:48:21 +0100 |
| commit | a0cb76a770083a22167659e64ba69af6425b1d9b (patch) | |
| tree | bd84898d3019877e31a26a014bec428b6049ccba /drivers/net/ethernet/marvell | |
| parent | Merge branch 'rtnetlink-allow-to-enslave-with-one-msg-an-up-interface' (diff) | |
| download | linux-a0cb76a770083a22167659e64ba69af6425b1d9b.tar.xz linux-a0cb76a770083a22167659e64ba69af6425b1d9b.zip | |
octeontx2-af: CN10KB: Fix FIFO length calculation for RPM2
RPM0 and RPM1 on the CN10KB SoC have 8 LMACs each, whereas RPM2
has only 4 LMACs. Similarly, the RPM0 and RPM1 have 256KB FIFO,
whereas RPM2 has 128KB FIFO. This patch fixes an issue with
improper TX credit programming for the RPM2 link.
Fixes: b9d0fedc6234 ("octeontx2-af: cn10kb: Add RPM_USX MAC support")
Signed-off-by: Nithin Dabilpuram <ndabilpuram@marvell.com>
Signed-off-by: Naveen Mamindlapalli <naveenm@marvell.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://lore.kernel.org/r/20240108073036.8766-1-naveenm@marvell.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'drivers/net/ethernet/marvell')
| -rw-r--r-- | drivers/net/ethernet/marvell/octeontx2/af/rpm.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rpm.c b/drivers/net/ethernet/marvell/octeontx2/af/rpm.c index 4728ba34b0e3..76218f1cb459 100644 --- a/drivers/net/ethernet/marvell/octeontx2/af/rpm.c +++ b/drivers/net/ethernet/marvell/octeontx2/af/rpm.c @@ -506,6 +506,7 @@ u32 rpm2_get_lmac_fifo_len(void *rpmd, int lmac_id) rpm_t *rpm = rpmd; u8 num_lmacs; u32 fifo_len; + u16 max_lmac; lmac_info = rpm_read(rpm, 0, RPM2_CMRX_RX_LMACS); /* LMACs are divided into two groups and each group @@ -513,7 +514,11 @@ u32 rpm2_get_lmac_fifo_len(void *rpmd, int lmac_id) * Group0 lmac_id range {0..3} * Group1 lmac_id range {4..7} */ - fifo_len = rpm->mac_ops->fifo_len / 2; + max_lmac = (rpm_read(rpm, 0, CGX_CONST) >> 24) & 0xFF; + if (max_lmac > 4) + fifo_len = rpm->mac_ops->fifo_len / 2; + else + fifo_len = rpm->mac_ops->fifo_len; if (lmac_id < 4) { num_lmacs = hweight8(lmac_info & 0xF); |