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drivers: net: vsc9953: Do not configure disabled ports

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Some SerDes protocols might not enable all l2switch ports. In this case,
these ports should not be configured to perform Rx/Tx operations.
This also fixes an issue when flooded frames were also switched to
disabled ports and frames start to accumulate, consuming memory
and eventually causing head-of-line blocking for other frames.

Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@nxp.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
Reviewed-by: York Sun <york.sun@nxp.com>
This commit is contained in:
Codrin Ciubotariu 2016-03-14 13:46:52 +02:00 committed by York Sun
parent 5330c7d707
commit 02c00f265d
1 changed files with 8 additions and 4 deletions
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12
drivers/net/vsc9953.c
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@ -2525,6 +2525,9 @@ void vsc9953_init(bd_t *bis)
if (vsc9953_port_init(i))
printf("Failed to initialize l2switch port %d\n", i);
if (!vsc9953_l2sw.port[i].enabled)
continue;
/* Enable VSC9953 GMII Ports Port ID 0 - 7 */
if (VSC9953_INTERNAL_PORT_CHECK(i)) {
out_le32(&l2ana_reg->pfc[i].pfc_cfg,
@ -2537,6 +2540,11 @@ void vsc9953_init(bd_t *bis)
out_le32(&l2sys_reg->pause_cfg.mac_fc_cfg[i],
VSC9953_MAC_FC_CFG);
}
l2dev_gmii_reg = (struct vsc9953_dev_gmii *)
(VSC9953_OFFSET + VSC9953_DEV_GMII_OFFSET +
T1040_SWITCH_GMII_DEV_OFFSET * i);
out_le32(&l2dev_gmii_reg->port_mode.clock_cfg,
VSC9953_CLOCK_CFG);
out_le32(&l2dev_gmii_reg->mac_cfg_status.mac_ena_cfg,
@ -2559,10 +2567,6 @@ void vsc9953_init(bd_t *bis)
/* WAIT FOR 2 us*/
udelay(2);
l2dev_gmii_reg = (struct vsc9953_dev_gmii *)(
(char *)l2dev_gmii_reg
+ T1040_SWITCH_GMII_DEV_OFFSET);
/* Initialize Lynx PHY Wrappers */
phy_addr = 0;
if (vsc9953_l2sw.port[i].enet_if ==