bnx2x: Correct EEE statistics gathering

In boards with 4-ports, Tx LPI statistics were gathered incorrectly.
This patch guarantees that each pmf will only query its own port for
these statistics.

Signed-off-by: Yuval Mintz <yuvalmin@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 9 insertions, 3 deletions

diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_reg.h b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_reg.h
index ec62a5c8bd37..28a0bcfe61ff 100644
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_reg.h
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_reg.h
@@ -1603,6 +1603,10 @@
  * of counts that the SM entered the EEE LPI state. Clock 25MHz. Read only
  * register. Reset on hard reset. */
 #define MISC_REG_CPMU_LP_SM_ENT_CNT_P0                           0xa8b8
+/* [RW 16] EEE LPI Entry Events Counter. A statistic counter with the number
+ * of counts that the SM entered the EEE LPI state. Clock 25MHz. Read only
+ * register. Reset on hard reset. */
+#define MISC_REG_CPMU_LP_SM_ENT_CNT_P1                           0xa8bc
 /* [RW 32] The following driver registers(1...16) represent 16 drivers and
    32 clients. Each client can be controlled by one driver only. One in each
    bit represent that this driver control the appropriate client (Ex: bit 5
diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_stats.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_stats.c
index 667d89042d35..332db64dd5be 100644
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_stats.c
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_stats.c
@@ -785,9 +785,11 @@ static int bnx2x_hw_stats_update(struct bnx2x *bp)
 
         pstats->host_port_stats_counter++;
 
-        if (CHIP_IS_E3(bp))
-                estats->eee_tx_lpi += REG_RD(bp,
-                                             MISC_REG_CPMU_LP_SM_ENT_CNT_P0);
+        if (CHIP_IS_E3(bp)) {
+                u32 lpi_reg = BP_PORT(bp) ? MISC_REG_CPMU_LP_SM_ENT_CNT_P1
+                                          : MISC_REG_CPMU_LP_SM_ENT_CNT_P0;
+                estats->eee_tx_lpi += REG_RD(bp, lpi_reg);
+        }
 
         if (!BP_NOMCP(bp)) {
                 u32 nig_timer_max =