ixgbe: add new bus type for intergrated I/O interface (IOSF)

With this patch we add support for a new bus type ixgbe_bus_type_internal.
X550em devices use IOSF and not PCIe bus so this new type is to accommodate
them.

Signed-off-by: Donald C Skidmore <donald.c.skidmore@intel.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
index 098c849..7e33125 100644 (file)
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
@@ -246,11 +246,19 @@ static inline bool ixgbe_pcie_from_parent(struct ixgbe_hw *hw)
 static void ixgbe_check_minimum_link(struct ixgbe_adapter *adapter,
                                     int expected_gts)
 {
+       struct ixgbe_hw *hw = &adapter->hw;
        int max_gts = 0;
        enum pci_bus_speed speed = PCI_SPEED_UNKNOWN;
        enum pcie_link_width width = PCIE_LNK_WIDTH_UNKNOWN;
        struct pci_dev *pdev;
 
+       /* Some devices are not connected over PCIe and thus do not negotiate
+        * speed. These devices do not have valid bus info, and thus any report
+        * we generate may not be correct.
+        */
+       if (hw->bus.type == ixgbe_bus_type_internal)
+               return;
+
        /* determine whether to use the parent device */
        if (ixgbe_pcie_from_parent(&adapter->hw))
                pdev = adapter->pdev->bus->parent->self;
@@ -8837,9 +8845,10 @@ skip_sriov:
        hw->eeprom.ops.read(hw, 0x2d, &adapter->eeprom_verl);
 
        /* pick up the PCI bus settings for reporting later */
-       hw->mac.ops.get_bus_info(hw);
        if (ixgbe_pcie_from_parent(hw))
                ixgbe_get_parent_bus_info(adapter);
+       else
+                hw->mac.ops.get_bus_info(hw);
 
        /* calculate the expected PCIe bandwidth required for optimal
         * performance. Note that some older parts will never have enough

diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_type.h b/drivers/net/ethernet/intel/ixgbe/ixgbe_type.h
index 19271e5..37df15f 100644 (file)
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_type.h
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_type.h
@@ -3067,6 +3067,7 @@ enum ixgbe_bus_type {
        ixgbe_bus_type_pci,
        ixgbe_bus_type_pcix,
        ixgbe_bus_type_pci_express,
+       ixgbe_bus_type_internal,
        ixgbe_bus_type_reserved
 };
 

diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_x550.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_x550.c
index dce39be..96f603f 100644 (file)
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_x550.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_x550.c
@@ -620,6 +620,7 @@ static s32 ixgbe_update_flash_X550(struct ixgbe_hw *hw)
  **/
 static s32 ixgbe_get_bus_info_X550em(struct ixgbe_hw *hw)
 {
+       hw->bus.type  = ixgbe_bus_type_internal;
        hw->bus.width = ixgbe_bus_width_unknown;
        hw->bus.speed = ixgbe_bus_speed_unknown;