From: Anjali Singhai Jain <anjali.sing...@intel.com>
Add virtual channel offload capability to support RX polling mode in the
VF.
Change-ID: Ib643ae2a7506dfc75fc489fc207493fabefa4832
Signed-off-by: Jingjing Wu <jingjing...@intel.com>
Signed-off-by: Anjali Singhai Jain <anjali.sing...@intel.com>
Tested-by: Andrew Bowers <andrewx.bow...@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirs...@intel.com>
---
drivers/net/ethernet/intel/i40e/i40e_register.h | 7 +++++++
drivers/net/ethernet/intel/i40e/i40e_virtchnl.h | 1 +
drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c | 12 ++++++++++++
drivers/net/ethernet/intel/i40evf/i40e_virtchnl.h | 1 +
4 files changed, 21 insertions(+)
diff --git a/drivers/net/ethernet/intel/i40e/i40e_register.h
b/drivers/net/ethernet/intel/i40e/i40e_register.h
index acae6c74..dc0402f 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_register.h
+++ b/drivers/net/ethernet/intel/i40e/i40e_register.h
@@ -873,6 +873,13 @@
#define I40E_PFINT_CEQCTL_CAUSE_ENA_MASK I40E_MASK(0x1,
I40E_PFINT_CEQCTL_CAUSE_ENA_SHIFT)
#define I40E_PFINT_CEQCTL_INTEVENT_SHIFT 31
#define I40E_PFINT_CEQCTL_INTEVENT_MASK I40E_MASK(0x1,
I40E_PFINT_CEQCTL_INTEVENT_SHIFT)
+#define I40E_GLINT_CTL 0x0003F800 /* Reset: CORER */
+#define I40E_GLINT_CTL_DIS_AUTOMASK_PF0_SHIFT 0
+#define I40E_GLINT_CTL_DIS_AUTOMASK_PF0_MASK I40E_MASK(0x1,
I40E_GLINT_CTL_DIS_AUTOMASK_PF0_SHIFT)
+#define I40E_GLINT_CTL_DIS_AUTOMASK_VF0_SHIFT 1
+#define I40E_GLINT_CTL_DIS_AUTOMASK_VF0_MASK I40E_MASK(0x1,
I40E_GLINT_CTL_DIS_AUTOMASK_VF0_SHIFT)
+#define I40E_GLINT_CTL_DIS_AUTOMASK_N_SHIFT 2
+#define I40E_GLINT_CTL_DIS_AUTOMASK_N_MASK I40E_MASK(0x1,
I40E_GLINT_CTL_DIS_AUTOMASK_N_SHIFT)
#define I40E_PFINT_DYN_CTL0 0x00038480 /* Reset: PFR */
#define I40E_PFINT_DYN_CTL0_INTENA_SHIFT 0
#define I40E_PFINT_DYN_CTL0_INTENA_MASK I40E_MASK(0x1,
I40E_PFINT_DYN_CTL0_INTENA_SHIFT)
diff --git a/drivers/net/ethernet/intel/i40e/i40e_virtchnl.h
b/drivers/net/ethernet/intel/i40e/i40e_virtchnl.h
index a7ab463..0f8d415 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_virtchnl.h
+++ b/drivers/net/ethernet/intel/i40e/i40e_virtchnl.h
@@ -152,6 +152,7 @@ struct i40e_virtchnl_vsi_resource {
#define I40E_VIRTCHNL_VF_OFFLOAD_RSS_AQ 0x00000008
#define I40E_VIRTCHNL_VF_OFFLOAD_RSS_REG 0x00000010
#define I40E_VIRTCHNL_VF_OFFLOAD_VLAN 0x00010000
+#define I40E_VIRTCHNL_VF_OFFLOAD_RX_POLLING 0x00020000
struct i40e_virtchnl_vf_resource {
u16 num_vsis;
diff --git a/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
b/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
index ca7a568..d99c116 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
@@ -335,6 +335,18 @@ static void i40e_config_irq_link_list(struct i40e_vf *vf,
u16 vsi_id,
wr32(hw, reg_idx, reg);
}
+ /* if the vf is running in polling mode and using interrupt zero,
+ * need to disable auto-mask on enabling zero interrupt for VFs.
+ */
+ if ((vf->driver_caps & I40E_VIRTCHNL_VF_OFFLOAD_RX_POLLING) &&
+ (vector_id == 0)) {
+ reg = rd32(hw, I40E_GLINT_CTL);
+ if (!(reg & I40E_GLINT_CTL_DIS_AUTOMASK_VF0_MASK)) {
+ reg |= I40E_GLINT_CTL_DIS_AUTOMASK_VF0_MASK;
+ wr32(hw, I40E_GLINT_CTL, reg);
+ }
+ }
+
irq_list_done:
i40e_flush(hw);
}
diff --git a/drivers/net/ethernet/intel/i40evf/i40e_virtchnl.h
b/drivers/net/ethernet/intel/i40evf/i40e_virtchnl.h
index 1e89dea..e6db20e 100644
--- a/drivers/net/ethernet/intel/i40evf/i40e_virtchnl.h
+++ b/drivers/net/ethernet/intel/i40evf/i40e_virtchnl.h
@@ -152,6 +152,7 @@ struct i40e_virtchnl_vsi_resource {
#define I40E_VIRTCHNL_VF_OFFLOAD_RSS_AQ 0x00000008
#define I40E_VIRTCHNL_VF_OFFLOAD_RSS_REG 0x00000010
#define I40E_VIRTCHNL_VF_OFFLOAD_VLAN 0x00010000
+#define I40E_VIRTCHNL_VF_OFFLOAD_RX_POLLING 0x00020000
struct i40e_virtchnl_vf_resource {
u16 num_vsis;
--
2.4.3
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
