redonkable/alistair23-linux
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net: dsa: b53: Have b53_hdr_setup() enable/disable tagging

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Have b53_hdr_setup() check what kind of tagging protocol is configured
(Broadcom or none) and apply the correct settings in both cases.

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 2017-10-30 15:17:20 -07:00 committed by David S. Miller
parent 6683ed96b5
commit cdb583cfe7
1 changed files with 13 additions and 3 deletions
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16
drivers/net/dsa/b53/b53_common.c
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@ -545,6 +545,7 @@ EXPORT_SYMBOL(b53_disable_port);
void b53_brcm_hdr_setup(struct dsa_switch *ds, int port)
{
bool tag_en = !!(ds->ops->get_tag_protocol(ds) == DSA_TAG_PROTO_BRCM);
struct b53_device *dev = ds->priv;
u8 hdr_ctl, val;
u16 reg;
@ -567,7 +568,10 @@ void b53_brcm_hdr_setup(struct dsa_switch *ds, int port)
/* Enable Broadcom tags for IMP port */
b53_read8(dev, B53_MGMT_PAGE, B53_BRCM_HDR, &hdr_ctl);
hdr_ctl |= val;
if (tag_en)
hdr_ctl |= val;
else
hdr_ctl &= ~val;
b53_write8(dev, B53_MGMT_PAGE, B53_BRCM_HDR, hdr_ctl);
/* Registers below are only accessible on newer devices */
@ -578,14 +582,20 @@ void b53_brcm_hdr_setup(struct dsa_switch *ds, int port)
* allow us to tag outgoing frames
*/
b53_read16(dev, B53_MGMT_PAGE, B53_BRCM_HDR_RX_DIS, &reg);
reg &= ~BIT(port);
if (tag_en)
reg &= ~BIT(port);
else
reg |= BIT(port);
b53_write16(dev, B53_MGMT_PAGE, B53_BRCM_HDR_RX_DIS, reg);
/* Enable transmission of Broadcom tags from the switch (CPU RX) to
* allow delivering frames to the per-port net_devices
*/
b53_read16(dev, B53_MGMT_PAGE, B53_BRCM_HDR_TX_DIS, &reg);
reg &= ~BIT(port);
if (tag_en)
reg &= ~BIT(port);
else
reg |= BIT(port);
b53_write16(dev, B53_MGMT_PAGE, B53_BRCM_HDR_TX_DIS, reg);
}
EXPORT_SYMBOL(b53_brcm_hdr_setup);