diff options
Diffstat (limited to 'drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c')
| -rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c index 070bd912580b..df5af52fd1a1 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c +++ b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c @@ -408,6 +408,16 @@ static int dwxgmac2_get_hw_feature(void __iomem *ioaddr, /* MAC HW feature 1 */ hw_cap = readl(ioaddr + XGMAC_HW_FEATURE1); dma_cap->l3l4fnum = (hw_cap & XGMAC_HWFEAT_L3L4FNUM) >> 27; + /* If L3L4FNUM < 8, then the number of L3L4 filters supported by + * XGMAC is equal to L3L4FNUM. From L3L4FNUM >= 8 the number of + * L3L4 filters goes on like 8, 16, 32, ... Current maximum of + * L3L4FNUM = 10. + */ + if (dma_cap->l3l4fnum >= 8 && dma_cap->l3l4fnum <= 10) + dma_cap->l3l4fnum = 8 << (dma_cap->l3l4fnum - 8); + else if (dma_cap->l3l4fnum > 10) + dma_cap->l3l4fnum = 32; + dma_cap->hash_tb_sz = (hw_cap & XGMAC_HWFEAT_HASHTBLSZ) >> 24; dma_cap->rssen = (hw_cap & XGMAC_HWFEAT_RSSEN) >> 20; dma_cap->tsoen = (hw_cap & XGMAC_HWFEAT_TSOEN) >> 18; |