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[net-next,08/11] net: ethernet: ti: ale: optimize ale entry mask bits configuartion

Message ID 20171201002120.13483-9-grygorii.strashko@ti.com
State Accepted, archived
Delegated to: David Miller
Headers show
Series net: ethernet: ti: cpsw/ale clean up and optimization | expand

Commit Message

Grygorii Strashko Dec. 1, 2017, 12:21 a.m. UTC 
The ale->params.ale_ports parameter can be used to deriver values for all
ale entry mask bits: port_mask_bits, port_mask_bits, port_num_bits.
Hence, calculate above values and drop all hardcoded values. For
port_num_bits calcualtion use order_base_2() API.

Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
---
 drivers/net/ethernet/ti/cpsw_ale.c | 13 +++----------
 1 file changed, 3 insertions(+), 10 deletions(-)
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Patch

diff --git a/drivers/net/ethernet/ti/cpsw_ale.c b/drivers/net/ethernet/ti/cpsw_ale.c
index 5eaaf88..f8c523d 100644
--- a/drivers/net/ethernet/ti/cpsw_ale.c
+++ b/drivers/net/ethernet/ti/cpsw_ale.c
@@ -816,9 +816,9 @@  void cpsw_ale_start(struct cpsw_ale *ale)
 		 "ALE Table size %ld\n", ale->params.ale_entries);
 
 	/* set default bits for existing h/w */
-	ale->port_mask_bits = 3;
-	ale->port_num_bits = 2;
-	ale->vlan_field_bits = 3;
+	ale->port_mask_bits = ale->params.ale_ports;
+	ale->port_num_bits = order_base_2(ale->params.ale_ports);
+	ale->vlan_field_bits = ale->params.ale_ports;
 
 	/* Set defaults override for ALE on NetCP NU switch and for version
 	 * 1R3
@@ -847,13 +847,6 @@  void cpsw_ale_start(struct cpsw_ale *ale)
 		ale_controls[ALE_PORT_UNTAGGED_EGRESS].shift = 0;
 		ale_controls[ALE_PORT_UNTAGGED_EGRESS].offset =
 					ALE_UNKNOWNVLAN_FORCE_UNTAG_EGRESS;
-		ale->port_mask_bits = ale->params.ale_ports;
-		ale->port_num_bits = ale->params.ale_ports - 1;
-		ale->vlan_field_bits = ale->params.ale_ports;
-	} else if (ale->version == ALE_VERSION_1R3) {
-		ale->port_mask_bits = ale->params.ale_ports;
-		ale->port_num_bits = 3;
-		ale->vlan_field_bits = ale->params.ale_ports;
 	}
 
 	cpsw_ale_control_set(ale, 0, ALE_ENABLE, 1);