diff options
| author | Sunil Goutham <sgoutham@cavium.com> | 2015-08-30 12:29:16 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-08-30 21:54:12 -0700 |
| commit | d77a2384988fd397cf4f71417b9d971aa435758d (patch) | |
| tree | 9fbca2f38512934f9b1a5a5fc23960bf19af777a /drivers/net/ethernet/cavium/thunder/thunder_bgx.c | |
| parent | 92dc87697e6a71675a9e9eec04ebecd8cf4837a3 (diff) | |
| download | op-kernel-dev-d77a2384988fd397cf4f71417b9d971aa435758d.zip op-kernel-dev-d77a2384988fd397cf4f71417b9d971aa435758d.tar.gz | |
net: thunderx: Support for internal loopback mode
Support for setting VF's corresponding BGX LMAC in internal
loopback mode. This mode can be used for verifying basic HW
functionality such as packet I/O, RX checksum validation,
CQ/RBDR interrupts, stats e.t.c. Useful when DUT has no external
network connectivity.
'loopback' mode can be enabled or disabled via ethtool.
Note: This feature is not supported when no of VFs enabled are
morethan no of physical interfaces i.e active BGX LMACs
Signed-off-by: Sunil Goutham <sgoutham@cavium.com>
Signed-off-by: Aleksey Makarov <aleksey.makarov@caviumnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/cavium/thunder/thunder_bgx.c')
| -rw-r--r-- | drivers/net/ethernet/cavium/thunder/thunder_bgx.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/drivers/net/ethernet/cavium/thunder/thunder_bgx.c b/drivers/net/ethernet/cavium/thunder/thunder_bgx.c index 5e54186..574c492 100644 --- a/drivers/net/ethernet/cavium/thunder/thunder_bgx.c +++ b/drivers/net/ethernet/cavium/thunder/thunder_bgx.c @@ -329,6 +329,37 @@ static void bgx_flush_dmac_addrs(struct bgx *bgx, int lmac) } } +/* Configure BGX LMAC in internal loopback mode */ +void bgx_lmac_internal_loopback(int node, int bgx_idx, + int lmac_idx, bool enable) +{ + struct bgx *bgx; + struct lmac *lmac; + u64 cfg; + + bgx = bgx_vnic[(node * MAX_BGX_PER_CN88XX) + bgx_idx]; + if (!bgx) + return; + + lmac = &bgx->lmac[lmac_idx]; + if (lmac->is_sgmii) { + cfg = bgx_reg_read(bgx, lmac_idx, BGX_GMP_PCS_MRX_CTL); + if (enable) + cfg |= PCS_MRX_CTL_LOOPBACK1; + else + cfg &= ~PCS_MRX_CTL_LOOPBACK1; + bgx_reg_write(bgx, lmac_idx, BGX_GMP_PCS_MRX_CTL, cfg); + } else { + cfg = bgx_reg_read(bgx, lmac_idx, BGX_SPUX_CONTROL1); + if (enable) + cfg |= SPU_CTL_LOOPBACK; + else + cfg &= ~SPU_CTL_LOOPBACK; + bgx_reg_write(bgx, lmac_idx, BGX_SPUX_CONTROL1, cfg); + } +} +EXPORT_SYMBOL(bgx_lmac_internal_loopback); + static int bgx_lmac_sgmii_init(struct bgx *bgx, int lmacid) { u64 cfg; |
