tg3: use phylib when robo switch is in use

When a switch is connected as a PHY to the MAC driven by tg3, use
phylib and provide the phy address to tg3 from the sprom.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Acked-by: Nithin Nayak Sujir <nsujir@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 10 insertions, 1 deletions

diff --git a/drivers/net/ethernet/broadcom/tg3.c b/drivers/net/ethernet/broadcom/tg3.c
index 853a05e0691f..a17a3c93e398 100644
--- a/drivers/net/ethernet/broadcom/tg3.c
+++ b/drivers/net/ethernet/broadcom/tg3.c
@@ -1513,6 +1513,13 @@ static int tg3_mdio_init(struct tg3 *tp)
                                     TG3_CPMU_PHY_STRAP_IS_SERDES;
                 if (is_serdes)
                         tp->phy_addr += 7;
+        } else if (tg3_flag(tp, IS_SSB_CORE) && tg3_flag(tp, ROBOSWITCH)) {
+                int addr;
+
+                addr = ssb_gige_get_phyaddr(tp->pdev);
+                if (addr < 0)
+                        return addr;
+                tp->phy_addr = addr;
         } else
                 tp->phy_addr = TG3_PHY_MII_ADDR;
 
@@ -17366,8 +17373,10 @@ static int tg3_init_one(struct pci_dev *pdev,
                         tg3_flag_set(tp, FLUSH_POSTED_WRITES);
                 if (ssb_gige_one_dma_at_once(pdev))
                         tg3_flag_set(tp, ONE_DMA_AT_ONCE);
-                if (ssb_gige_have_roboswitch(pdev))
+                if (ssb_gige_have_roboswitch(pdev)) {
+                        tg3_flag_set(tp, USE_PHYLIB);
                         tg3_flag_set(tp, ROBOSWITCH);
+                }
                 if (ssb_gige_is_rgmii(pdev))
                         tg3_flag_set(tp, RGMII_MODE);
         }