1 files changed, 24 insertions, 6 deletions

diff --git a/drivers/net/ethernet/broadcom/tg3.c b/drivers/net/ethernet/broadcom/tg3.c
index 0413e1e85641..6973d01ae85a 100644
--- a/drivers/net/ethernet/broadcom/tg3.c
+++ b/drivers/net/ethernet/broadcom/tg3.c
@@ -14230,12 +14230,30 @@ static int __devinit tg3_get_invariants(struct tg3 *tp)
         val = tr32(MEMARB_MODE);
         tw32(MEMARB_MODE, val | MEMARB_MODE_ENABLE);
 
-        if (tg3_flag(tp, PCIX_MODE)) {
-                pci_read_config_dword(tp->pdev,
-                                      tp->pcix_cap + PCI_X_STATUS, &val);
-                tp->pci_fn = val & 0x7;
-        } else {
-                tp->pci_fn = PCI_FUNC(tp->pdev->devfn) & 3;
+        tp->pci_fn = PCI_FUNC(tp->pdev->devfn) & 3;
+        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5704 ||
+            tg3_flag(tp, 5780_CLASS)) {
+                if (tg3_flag(tp, PCIX_MODE)) {
+                        pci_read_config_dword(tp->pdev,
+                                              tp->pcix_cap + PCI_X_STATUS,
+                                              &val);
+                        tp->pci_fn = val & 0x7;
+                }
+        } else if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5717) {
+                tg3_read_mem(tp, NIC_SRAM_CPMU_STATUS, &val);
+                if ((val & NIC_SRAM_CPMUSTAT_SIG_MSK) ==
+                    NIC_SRAM_CPMUSTAT_SIG) {
+                        tp->pci_fn = val & TG3_CPMU_STATUS_FMSK_5717;
+                        tp->pci_fn = tp->pci_fn ? 1 : 0;
+                }
+        } else if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5719 ||
+                   GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5720) {
+                tg3_read_mem(tp, NIC_SRAM_CPMU_STATUS, &val);
+                if ((val & NIC_SRAM_CPMUSTAT_SIG_MSK) ==
+                    NIC_SRAM_CPMUSTAT_SIG) {
+                        tp->pci_fn = (val & TG3_CPMU_STATUS_FMSK_5719) >>
+                                     TG3_CPMU_STATUS_FSHFT_5719;
+                }
         }
 
         /* Get eeprom hw config before calling tg3_set_power_state().