[dpdk-dev] [PATCH 11/17] net/fm10k/base: enable lport map request

[Qi Zhang <qi.z.zhang@intel.com>]

If the fm10k interface is brought up, but the switch manager software is
not running, the driver will continuously request the lport map every
few seconds in the base driver watchdog routine. Eventually after
several minutes the switch mailbox Tx fifo will fill up and the mailbox
will timeout, resulting in a reset. This reset will appear as if for no
reason, and occurs regularly every few minutes until the switch manager
software is loaded.

Signed-off-by: Qi Zhang <qi.z.zhang@intel.com>
---
 drivers/net/fm10k/base/fm10k_common.c |  8 ++++++--
 drivers/net/fm10k/base/fm10k_pf.c     | 17 ++++-------------
 drivers/net/fm10k/base/fm10k_type.h   |  1 +
 3 files changed, 11 insertions(+), 15 deletions(-)

diff --git a/drivers/net/fm10k/base/fm10k_common.c b/drivers/net/fm10k/base/fm10k_common.c
index a90d2f0..7acc1ba 100644
--- a/drivers/net/fm10k/base/fm10k_common.c
+++ b/drivers/net/fm10k/base/fm10k_common.c
@@ -542,7 +542,7 @@ s32 fm10k_get_host_state_generic(struct fm10k_hw *hw, bool *host_ready)
 		goto out;
 
 	/* if we somehow dropped the Tx enable we should reset */
-	if (hw->mac.tx_ready && !(txdctl & FM10K_TXDCTL_ENABLE)) {
+	if (mac->tx_ready && !(txdctl & FM10K_TXDCTL_ENABLE)) {
 		ret_val = FM10K_ERR_RESET_REQUESTED;
 		goto out;
 	}
@@ -558,8 +558,12 @@ s32 fm10k_get_host_state_generic(struct fm10k_hw *hw, bool *host_ready)
 		goto out;
 
 	/* interface cannot receive traffic without logical ports */
-	if (mac->dglort_map == FM10K_DGLORTMAP_NONE)
+	if (mac->dglort_map == FM10K_DGLORTMAP_NONE) {
+		if (mac->ops.request_lport_map)
+			ret_val = mac->ops.request_lport_map(hw);
+
 		goto out;
+	}
 
 	/* if we passed all the tests above then the switch is ready and we no
 	 * longer need to check for link
diff --git a/drivers/net/fm10k/base/fm10k_pf.c b/drivers/net/fm10k/base/fm10k_pf.c
index 4c075b6..bbc483d 100644
--- a/drivers/net/fm10k/base/fm10k_pf.c
+++ b/drivers/net/fm10k/base/fm10k_pf.c
@@ -1688,13 +1688,12 @@ STATIC s32 fm10k_request_lport_map_pf(struct fm10k_hw *hw)
  *  @hw: pointer to hardware structure
  *  @switch_ready: pointer to boolean value that will record switch state
  *
- *  This funciton will check the DMA_CTRL2 register and mailbox in order
+ *  This function will check the DMA_CTRL2 register and mailbox in order
  *  to determine if the switch is ready for the PF to begin requesting
  *  addresses and mapping traffic to the local interface.
  **/
 STATIC s32 fm10k_get_host_state_pf(struct fm10k_hw *hw, bool *switch_ready)
 {
-	s32 ret_val = FM10K_SUCCESS;
 	u32 dma_ctrl2;
 
 	DEBUGFUNC("fm10k_get_host_state_pf");
@@ -1702,19 +1701,10 @@ STATIC s32 fm10k_get_host_state_pf(struct fm10k_hw *hw, bool *switch_ready)
 	/* verify the switch is ready for interaction */
 	dma_ctrl2 = FM10K_READ_REG(hw, FM10K_DMA_CTRL2);
 	if (!(dma_ctrl2 & FM10K_DMA_CTRL2_SWITCH_READY))
-		goto out;
+		return FM10K_SUCCESS;
 
 	/* retrieve generic host state info */
-	ret_val = fm10k_get_host_state_generic(hw, switch_ready);
-	if (ret_val)
-		goto out;
-
-	/* interface cannot receive traffic without logical ports */
-	if (hw->mac.dglort_map == FM10K_DGLORTMAP_NONE)
-		ret_val = fm10k_request_lport_map_pf(hw);
-
-out:
-	return ret_val;
+	return fm10k_get_host_state_generic(hw, switch_ready);
 }
 
 /* This structure defines the attibutes to be parsed below */
@@ -2102,6 +2092,7 @@ s32 fm10k_init_ops_pf(struct fm10k_hw *hw)
 	mac->ops.set_dma_mask = &fm10k_set_dma_mask_pf;
 	mac->ops.get_fault = &fm10k_get_fault_pf;
 	mac->ops.get_host_state = &fm10k_get_host_state_pf;
+	mac->ops.request_lport_map = &fm10k_request_lport_map_pf;
 	mac->ops.adjust_systime = &fm10k_adjust_systime_pf;
 	mac->ops.notify_offset = &fm10k_notify_offset_pf;
 	mac->ops.read_systime = &fm10k_read_systime_pf;
diff --git a/drivers/net/fm10k/base/fm10k_type.h b/drivers/net/fm10k/base/fm10k_type.h
index 515be26..b74cebf 100644
--- a/drivers/net/fm10k/base/fm10k_type.h
+++ b/drivers/net/fm10k/base/fm10k_type.h
@@ -611,6 +611,7 @@ struct fm10k_mac_ops {
 	s32 (*stop_hw)(struct fm10k_hw *);
 	s32 (*get_bus_info)(struct fm10k_hw *);
 	s32 (*get_host_state)(struct fm10k_hw *, bool *);
+	s32 (*request_lport_map)(struct fm10k_hw *);
 #ifndef NO_IS_SLOT_APPROPRIATE_CHECK
 	bool (*is_slot_appropriate)(struct fm10k_hw *);
 #endif
-- 
2.9.3