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net: dsa: bcm_sf2: Configure IMP port TC2QOS mapping 

Even though TC2QOS mapping is for switch egress queues, we need to
configure it correclty in order for the Broadcom tag ingress (CPU ->
switch) queue selection to work correctly since there is a 1:1 mapping
between switch egress queues and ingress queues.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Florian Fainelli 2017-09-03 20:27:03 -07:00 committed by David S. Miller
parent 1811837739
commit c837fc81d6
1 changed files with 9 additions and 0 deletions
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9
drivers/net/dsa/bcm_sf2.c
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@ -103,6 +103,7 @@ static void bcm_sf2_brcm_hdr_setup(struct bcm_sf2_priv *priv, int port)
static void bcm_sf2_imp_setup(struct dsa_switch *ds, int port)
{
struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
unsigned int i;
u32 reg, offset;
if (priv->type == BCM7445_DEVICE_ID)
@ -129,6 +130,14 @@ static void bcm_sf2_imp_setup(struct dsa_switch *ds, int port)
reg |= MII_DUMB_FWDG_EN;
core_writel(priv, reg, CORE_SWITCH_CTRL);
/* Configure Traffic Class to QoS mapping, allow each priority to map
* to a different queue number
*/
reg = core_readl(priv, CORE_PORT_TC2_QOS_MAP_PORT(port));
for (i = 0; i < SF2_NUM_EGRESS_QUEUES; i++)
reg |= i << (PRT_TO_QID_SHIFT * i);
core_writel(priv, reg, CORE_PORT_TC2_QOS_MAP_PORT(port));
bcm_sf2_brcm_hdr_setup(priv, port);
/* Force link status for IMP port */