netdev - [net-next 10/15] ice: update GLINT_DYN_CTL and GLINT

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Message-Id: <20190809183139.30871-11-jeffrey.t.kirsher@intel.com>
Date:   Fri,  9 Aug 2019 11:31:34 -0700
From:   Jeff Kirsher <jeffrey.t.kirsher@...el.com>
To:     davem@...emloft.net
Cc:     Paul Greenwalt <paul.greenwalt@...el.com>, netdev@...r.kernel.org,
        nhorman@...hat.com, sassmann@...hat.com,
        Andrew Bowers <andrewx.bowers@...el.com>,
        Jeff Kirsher <jeffrey.t.kirsher@...el.com>
Subject: [net-next 10/15] ice: update GLINT_DYN_CTL and GLINT_VECT2FUNC register access

From: Paul Greenwalt <paul.greenwalt@...el.com>

Register access for GLINT_DYN_CTL and GLINT_VECT2FUNC should be within
the PF space and not the absolute device space.

Signed-off-by: Paul Greenwalt <paul.greenwalt@...el.com>
Tested-by: Andrew Bowers <andrewx.bowers@...el.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@...el.com>
---
 .../net/ethernet/intel/ice/ice_virtchnl_pf.c  | 24 +++++++++++--------
 .../net/ethernet/intel/ice/ice_virtchnl_pf.h  |  3 ++-
 2 files changed, 16 insertions(+), 11 deletions(-)

diff --git a/drivers/net/ethernet/intel/ice/ice_virtchnl_pf.c b/drivers/net/ethernet/intel/ice/ice_virtchnl_pf.c
index 93b835a24bb1..54b0e88af4ca 100644
--- a/drivers/net/ethernet/intel/ice/ice_virtchnl_pf.c
+++ b/drivers/net/ethernet/intel/ice/ice_virtchnl_pf.c
@@ -474,19 +474,20 @@ ice_vf_vsi_setup(struct ice_pf *pf, struct ice_port_info *pi, u16 vf_id)
 }
 
 /**
- * ice_calc_vf_first_vector_idx - Calculate absolute MSIX vector index in HW
+ * ice_calc_vf_first_vector_idx - Calculate MSIX vector index in the PF space
  * @pf: pointer to PF structure
  * @vf: pointer to VF that the first MSIX vector index is being calculated for
  *
- * This returns the first MSIX vector index in HW that is used by this VF and
- * this will always be the OICR index in the AVF driver so any functionality
+ * This returns the first MSIX vector index in PF space that is used by this VF.
+ * This index is used when accessing PF relative registers such as
+ * GLINT_VECT2FUNC and GLINT_DYN_CTL.
+ * This will always be the OICR index in the AVF driver so any functionality
  * using vf->first_vector_idx for queue configuration will have to increment by
  * 1 to avoid meddling with the OICR index.
  */
 static int ice_calc_vf_first_vector_idx(struct ice_pf *pf, struct ice_vf *vf)
 {
-	return pf->hw.func_caps.common_cap.msix_vector_first_id +
-		pf->sriov_base_vector + vf->vf_id * pf->num_vf_msix;
+	return pf->sriov_base_vector + vf->vf_id * pf->num_vf_msix;
 }
 
 /**
@@ -597,27 +598,30 @@ static int ice_alloc_vf_res(struct ice_vf *vf)
  */
 static void ice_ena_vf_mappings(struct ice_vf *vf)
 {
+	int abs_vf_id, abs_first, abs_last;
 	struct ice_pf *pf = vf->pf;
 	struct ice_vsi *vsi;
 	int first, last, v;
 	struct ice_hw *hw;
-	int abs_vf_id;
 	u32 reg;
 
 	hw = &pf->hw;
 	vsi = pf->vsi[vf->lan_vsi_idx];
 	first = vf->first_vector_idx;
 	last = (first + pf->num_vf_msix) - 1;
+	abs_first = first + pf->hw.func_caps.common_cap.msix_vector_first_id;
+	abs_last = (abs_first + pf->num_vf_msix) - 1;
 	abs_vf_id = vf->vf_id + hw->func_caps.vf_base_id;
 
 	/* VF Vector allocation */
-	reg = (((first << VPINT_ALLOC_FIRST_S) & VPINT_ALLOC_FIRST_M) |
-	       ((last << VPINT_ALLOC_LAST_S) & VPINT_ALLOC_LAST_M) |
+	reg = (((abs_first << VPINT_ALLOC_FIRST_S) & VPINT_ALLOC_FIRST_M) |
+	       ((abs_last << VPINT_ALLOC_LAST_S) & VPINT_ALLOC_LAST_M) |
 	       VPINT_ALLOC_VALID_M);
 	wr32(hw, VPINT_ALLOC(vf->vf_id), reg);
 
-	reg = (((first << VPINT_ALLOC_PCI_FIRST_S) & VPINT_ALLOC_PCI_FIRST_M) |
-	       ((last << VPINT_ALLOC_PCI_LAST_S) & VPINT_ALLOC_PCI_LAST_M) |
+	reg = (((abs_first << VPINT_ALLOC_PCI_FIRST_S)
+		 & VPINT_ALLOC_PCI_FIRST_M) |
+	       ((abs_last << VPINT_ALLOC_PCI_LAST_S) & VPINT_ALLOC_PCI_LAST_M) |
 	       VPINT_ALLOC_PCI_VALID_M);
 	wr32(hw, VPINT_ALLOC_PCI(vf->vf_id), reg);
 	/* map the interrupts to its functions */
diff --git a/drivers/net/ethernet/intel/ice/ice_virtchnl_pf.h b/drivers/net/ethernet/intel/ice/ice_virtchnl_pf.h
index ada69120ff38..424bc0538956 100644
--- a/drivers/net/ethernet/intel/ice/ice_virtchnl_pf.h
+++ b/drivers/net/ethernet/intel/ice/ice_virtchnl_pf.h
@@ -45,7 +45,8 @@ struct ice_vf {
 
 	s16 vf_id;			/* VF ID in the PF space */
 	u16 lan_vsi_idx;		/* index into PF struct */
-	int first_vector_idx;		/* first vector index of this VF */
+	/* first vector index of this VF in the PF space */
+	int first_vector_idx;
 	struct ice_sw *vf_sw_id;	/* switch ID the VF VSIs connect to */
 	struct virtchnl_version_info vf_ver;
 	u32 driver_caps;		/* reported by VF driver */
-- 
2.21.0