[v2,01/20] net/ixgbe/base: toggle VF's Tx queues
diff mbox series

Message ID 20200702031329.4495-2-guinanx.sun@intel.com
State Superseded, archived
Delegated to: Qi Zhang
Headers show
Series
  • update ixgbe base code
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Context Check Description
ci/iol-testing success Testing PASS
ci/Intel-compilation success Compilation OK
ci/iol-mellanox-Performance success Performance Testing PASS
ci/iol-intel-Performance success Performance Testing PASS
ci/iol-broadcom-Performance success Performance Testing PASS
ci/checkpatch success coding style OK

Commit Message

Guinan Sun July 2, 2020, 3:13 a.m. UTC
Add method to toggle VF's TX queues needed
as workaround for silicon errata.

Signed-off-by: Piotr Pietruszewski <piotr.pietruszewski@intel.com>
Signed-off-by: Guinan Sun <guinanx.sun@intel.com>
---
 drivers/net/ixgbe/base/ixgbe_api.c    | 13 +++++++
 drivers/net/ixgbe/base/ixgbe_api.h    |  1 +
 drivers/net/ixgbe/base/ixgbe_common.c | 56 +++++++++++++++++++++++++++
 drivers/net/ixgbe/base/ixgbe_common.h |  1 +
 drivers/net/ixgbe/base/ixgbe_type.h   |  1 +
 5 files changed, 72 insertions(+)

Patch
diff mbox series

diff --git a/drivers/net/ixgbe/base/ixgbe_api.c b/drivers/net/ixgbe/base/ixgbe_api.c
index 0a22df3d0..9e4763a64 100644
--- a/drivers/net/ixgbe/base/ixgbe_api.c
+++ b/drivers/net/ixgbe/base/ixgbe_api.c
@@ -1101,6 +1101,19 @@  s32 ixgbe_set_vlvf(struct ixgbe_hw *hw, u32 vlan, u32 vind, bool vlan_on,
 			       IXGBE_NOT_IMPLEMENTED);
 }
 
+/**
+ *  ixgbe_toggle_txdctl - Toggle VF's queues
+ *  @hw: pointer to hardware structure
+ *  @vind: VMDq pool index
+ *
+ *  Enable and disable each queue in VF.
+ */
+s32 ixgbe_toggle_txdctl(struct ixgbe_hw *hw, u32 vind)
+{
+	return ixgbe_call_func(hw, hw->mac.ops.toggle_txdctl, (hw,
+			       vind), IXGBE_NOT_IMPLEMENTED);
+}
+
 /**
  *  ixgbe_fc_enable - Enable flow control
  *  @hw: pointer to hardware structure
diff --git a/drivers/net/ixgbe/base/ixgbe_api.h b/drivers/net/ixgbe/base/ixgbe_api.h
index 33e7c3c21..be26317c5 100644
--- a/drivers/net/ixgbe/base/ixgbe_api.h
+++ b/drivers/net/ixgbe/base/ixgbe_api.h
@@ -101,6 +101,7 @@  s32 ixgbe_set_vfta(struct ixgbe_hw *hw, u32 vlan,
 s32 ixgbe_set_vlvf(struct ixgbe_hw *hw, u32 vlan, u32 vind,
 		   bool vlan_on, u32 *vfta_delta, u32 vfta,
 		   bool vlvf_bypass);
+s32 ixgbe_toggle_txdctl(struct ixgbe_hw *hw, u32 vind);
 s32 ixgbe_fc_enable(struct ixgbe_hw *hw);
 s32 ixgbe_setup_fc(struct ixgbe_hw *hw);
 s32 ixgbe_set_fw_drv_ver(struct ixgbe_hw *hw, u8 maj, u8 min, u8 build,
diff --git a/drivers/net/ixgbe/base/ixgbe_common.c b/drivers/net/ixgbe/base/ixgbe_common.c
index 4eb98dc19..36c003844 100644
--- a/drivers/net/ixgbe/base/ixgbe_common.c
+++ b/drivers/net/ixgbe/base/ixgbe_common.c
@@ -103,6 +103,7 @@  s32 ixgbe_init_ops_generic(struct ixgbe_hw *hw)
 	mac->ops.init_uta_tables = NULL;
 	mac->ops.enable_rx = ixgbe_enable_rx_generic;
 	mac->ops.disable_rx = ixgbe_disable_rx_generic;
+	mac->ops.toggle_txdctl = ixgbe_toggle_txdctl_generic;
 
 	/* Flow Control */
 	mac->ops.fc_enable = ixgbe_fc_enable_generic;
@@ -4103,6 +4104,61 @@  s32 ixgbe_clear_vfta_generic(struct ixgbe_hw *hw)
 	return IXGBE_SUCCESS;
 }
 
+/**
+ *  ixgbe_toggle_txdctl_generic - Toggle VF's queues
+ *  @hw: pointer to hardware structure
+ *  @vf_number: VF index
+ *
+ *  Enable and disable each queue in VF.
+ */
+s32 ixgbe_toggle_txdctl_generic(struct ixgbe_hw *hw, u32 vf_number)
+{
+	u8  queue_count, i;
+	u32 offset, reg;
+
+	if (vf_number > 63)
+		return IXGBE_ERR_PARAM;
+
+	/*
+	 * Determine number of queues by checking
+	 * number of virtual functions
+	 */
+	reg = IXGBE_READ_REG(hw, IXGBE_GCR_EXT);
+	switch (reg & IXGBE_GCR_EXT_VT_MODE_MASK) {
+	case IXGBE_GCR_EXT_VT_MODE_64:
+		queue_count = 2;
+		break;
+	case IXGBE_GCR_EXT_VT_MODE_32:
+		queue_count = 4;
+		break;
+	case IXGBE_GCR_EXT_VT_MODE_16:
+		queue_count = 8;
+		break;
+	default:
+		return IXGBE_ERR_CONFIG;
+	}
+
+	/* Toggle queues */
+	for (i = 0; i < queue_count; ++i) {
+		/* Calculate offset of current queue */
+		offset = queue_count * vf_number + i;
+
+		/* Enable queue */
+		reg = IXGBE_READ_REG(hw, IXGBE_PVFTXDCTL(offset));
+		reg |= IXGBE_TXDCTL_ENABLE;
+		IXGBE_WRITE_REG(hw, IXGBE_PVFTXDCTL(offset), reg);
+		IXGBE_WRITE_FLUSH(hw);
+
+		/* Disable queue */
+		reg = IXGBE_READ_REG(hw, IXGBE_PVFTXDCTL(offset));
+		reg &= ~IXGBE_TXDCTL_ENABLE;
+		IXGBE_WRITE_REG(hw, IXGBE_PVFTXDCTL(offset), reg);
+		IXGBE_WRITE_FLUSH(hw);
+	}
+
+	return IXGBE_SUCCESS;
+}
+
 /**
  *  ixgbe_need_crosstalk_fix - Determine if we need to do cross talk fix
  *  @hw: pointer to hardware structure
diff --git a/drivers/net/ixgbe/base/ixgbe_common.h b/drivers/net/ixgbe/base/ixgbe_common.h
index 7a31f088c..1d4839a62 100644
--- a/drivers/net/ixgbe/base/ixgbe_common.h
+++ b/drivers/net/ixgbe/base/ixgbe_common.h
@@ -111,6 +111,7 @@  s32 ixgbe_set_vlvf_generic(struct ixgbe_hw *hw, u32 vlan, u32 vind,
 			   bool vlvf_bypass);
 s32 ixgbe_clear_vfta_generic(struct ixgbe_hw *hw);
 s32 ixgbe_find_vlvf_slot(struct ixgbe_hw *hw, u32 vlan, bool vlvf_bypass);
+s32 ixgbe_toggle_txdctl_generic(struct ixgbe_hw *hw, u32 vind);
 
 s32 ixgbe_check_mac_link_generic(struct ixgbe_hw *hw,
 			       ixgbe_link_speed *speed,
diff --git a/drivers/net/ixgbe/base/ixgbe_type.h b/drivers/net/ixgbe/base/ixgbe_type.h
index 15e937010..6c8c93946 100644
--- a/drivers/net/ixgbe/base/ixgbe_type.h
+++ b/drivers/net/ixgbe/base/ixgbe_type.h
@@ -3997,6 +3997,7 @@  struct ixgbe_mac_operations {
 	s32 (*init_uta_tables)(struct ixgbe_hw *);
 	void (*set_mac_anti_spoofing)(struct ixgbe_hw *, bool, int);
 	void (*set_vlan_anti_spoofing)(struct ixgbe_hw *, bool, int);
+	s32 (*toggle_txdctl)(struct ixgbe_hw *hw, u32 vf_index);
 	s32 (*update_xcast_mode)(struct ixgbe_hw *, int);
 	s32 (*set_rlpml)(struct ixgbe_hw *, u16);