[dpdk-dev] [PATCH v5 09/29] net/i40e: fix VF reset flow

[Ferruh Yigit]

From: Qi Zhang <qi.z.zhang at 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 at dpdk.org
Signed-off-by: Qi Zhang <qi.z.zhang at 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 8b8a14f..2bc3355 100644
--- a/drivers/net/i40e/i40e_pf.c
+++ b/drivers/net/i40e/i40e_pf.c
@@ -139,7 +139,7 @@ i40e_pf_host_vf_reset(struct i40e_pf_vf *vf, bool do_hw_reset)
 	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 @@ i40e_pf_host_vf_reset(struct i40e_pf_vf *vf, bool do_hw_reset)
 	}
 
 	/* 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 @@ i40e_pf_host_vf_reset(struct i40e_pf_vf *vf, bool do_hw_reset)
 		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 59bf2ee..ada398b 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 {
 	/*
-- 
2.9.3