ice: enable VF admin queue interrupts

The VPINT_MBX_CTL register array must be programmed to enable VF admin
queue interrupts. Without this, VFs never get interrupts on vector 0,
and some VF drivers will fail to init.

Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Signed-off-by: Anirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

diff --git a/drivers/net/ethernet/intel/ice/ice_hw_autogen.h b/drivers/net/ethernet/intel/ice/ice_hw_autogen.h
index 24255ff..af6f323 100644 (file)
--- a/drivers/net/ethernet/intel/ice/ice_hw_autogen.h
+++ b/drivers/net/ethernet/intel/ice/ice_hw_autogen.h
@@ -178,6 +178,8 @@
 #define VPINT_ALLOC_PCI_LAST_S                 12
 #define VPINT_ALLOC_PCI_LAST_M                 ICE_M(0x7FF, 12)
 #define VPINT_ALLOC_PCI_VALID_M                        BIT(31)
+#define VPINT_MBX_CTL(_VSI)                    (0x0016A000 + ((_VSI) * 4))
+#define VPINT_MBX_CTL_CAUSE_ENA_M              BIT(30)
 #define GLLAN_RCTL_0                           0x002941F8
 #define QRX_CONTEXT(_i, _QRX)                  (0x00280000 + ((_i) * 8192 + (_QRX) * 4))
 #define QRX_CTRL(_QRX)                         (0x00120000 + ((_QRX) * 4))

diff --git a/drivers/net/ethernet/intel/ice/ice_virtchnl_pf.c b/drivers/net/ethernet/intel/ice/ice_virtchnl_pf.c
index de3d268..f4ecf17 100644 (file)
--- a/drivers/net/ethernet/intel/ice/ice_virtchnl_pf.c
+++ b/drivers/net/ethernet/intel/ice/ice_virtchnl_pf.c
@@ -604,6 +604,10 @@ static void ice_ena_vf_mappings(struct ice_vf *vf)
                wr32(hw, GLINT_VECT2FUNC(v), reg);
        }
 
+       /* Map mailbox interrupt. We put an explicit 0 here to remind us that
+        * VF admin queue interrupts will go to VF MSI-X vector 0.
+        */
+       wr32(hw, VPINT_MBX_CTL(abs_vf_id), VPINT_MBX_CTL_CAUSE_ENA_M | 0);
        /* set regardless of mapping mode */
        wr32(hw, VPLAN_TXQ_MAPENA(vf->vf_id), VPLAN_TXQ_MAPENA_TX_ENA_M);