diff options
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 5e541862f65e..574c49278900 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; |