[dpdk-dev] [PATCH v12 09/26] net/i40e: fix VF reset flow

[Wenzhuo Lu <wenzhuo.lu@intel.com>]

From: Qi Zhang <qi.z.zhang@intel.com>

Add missing step during VF reset: PF should
set I40E_VFGEN_RSTAT to ACTIVE at end of the
VF reset operation or VF driver may not able
to detect that reset is already completed.
This patch also remove the unnecessary enum
for vfr state.

Fixes: 4861cde46116 ("i40e: new poll mode driver")

CC: stable@dpdk.org
Signed-off-by: Qi Zhang <qi.z.zhang@intel.com>
---
 drivers/net/i40e/i40e_pf.c | 6 ++++--
 drivers/net/i40e/i40e_pf.h | 5 -----
 2 files changed, 4 insertions(+), 7 deletions(-)

diff --git a/drivers/net/i40e/i40e_pf.c b/drivers/net/i40e/i40e_pf.c
index 5c58424..8a6733c 100644
--- a/drivers/net/i40e/i40e_pf.c
+++ b/drivers/net/i40e/i40e_pf.c
@@ -139,7 +139,7 @@
 	abs_vf_id = vf_id + hw->func_caps.vf_base_id;
 
 	/* Notify VF that we are in VFR progress */
-	I40E_WRITE_REG(hw, I40E_VFGEN_RSTAT1(vf_id), I40E_PF_VFR_INPROGRESS);
+	I40E_WRITE_REG(hw, I40E_VFGEN_RSTAT1(vf_id), I40E_VFR_INPROGRESS);
 
 	/*
 	 * If require a SW VF reset, a VFLR interrupt will be generated,
@@ -220,7 +220,7 @@
 	}
 
 	/* Reset done, Set COMPLETE flag and clear reset bit */
-	I40E_WRITE_REG(hw, I40E_VFGEN_RSTAT1(vf_id), I40E_PF_VFR_COMPLETED);
+	I40E_WRITE_REG(hw, I40E_VFGEN_RSTAT1(vf_id), I40E_VFR_COMPLETED);
 	val = I40E_READ_REG(hw, I40E_VPGEN_VFRTRIG(vf_id));
 	val &= ~I40E_VPGEN_VFRTRIG_VFSWR_MASK;
 	I40E_WRITE_REG(hw, I40E_VPGEN_VFRTRIG(vf_id), val);
@@ -248,6 +248,8 @@
 		return -EFAULT;
 	}
 
+	I40E_WRITE_REG(hw, I40E_VFGEN_RSTAT1(vf_id), I40E_VFR_VFACTIVE);
+
 	return ret;
 }
 
diff --git a/drivers/net/i40e/i40e_pf.h b/drivers/net/i40e/i40e_pf.h
index 47a9c34..b4c2287 100644
--- a/drivers/net/i40e/i40e_pf.h
+++ b/drivers/net/i40e/i40e_pf.h
@@ -48,11 +48,6 @@
 
 #define I40E_DPDK_OFFSET  0x100
 
-enum i40e_pf_vfr_state {
-	I40E_PF_VFR_INPROGRESS = 0,
-	I40E_PF_VFR_COMPLETED = 1,
-};
-
 /* DPDK pf driver specific command to VF */
 enum i40e_virtchnl_ops_dpdk {
 	/*
-- 
1.9.3