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net: dsa: b53: Turn on Broadcom tags 

Enable Broadcom tags for b53 devices, except 5325 and 5365 which use a
different Broadcom tag format not yet supported by net/dsa/tag_brcm.c.

We also make sure that we can turn on Broadcom tags on a CPU port number
that is capable of that: 5, 7 or 8.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
hifive-unleashed-5.1
Florian Fainelli 2017-11-10 11:33:27 -08:00 committed by David S. Miller
parent c499696e79
commit 7edc58d614
2 changed files with 40 additions and 9 deletions
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1
drivers/net/dsa/b53/Kconfig
View File

@ -1,6 +1,7 @@
menuconfig B53
tristate "Broadcom BCM53xx managed switch support"
depends on NET_DSA
select NET_DSA_TAG_BRCM
help
This driver adds support for Broadcom managed switch chips. It supports
BCM5325E, BCM5365, BCM539x, BCM53115 and BCM53125 as well as BCM63XX

48
drivers/net/dsa/b53/b53_common.c
View File

@ -325,7 +325,6 @@ static void b53_get_vlan_entry(struct b53_device *dev, u16 vid,
static void b53_set_forwarding(struct b53_device *dev, int enable)
{
struct dsa_switch *ds = dev->ds;
u8 mgmt;
b53_read8(dev, B53_CTRL_PAGE, B53_SWITCH_MODE, &mgmt);
@ -337,14 +336,11 @@ static void b53_set_forwarding(struct b53_device *dev, int enable)
b53_write8(dev, B53_CTRL_PAGE, B53_SWITCH_MODE, mgmt);
/* Include IMP port in dumb forwarding mode when no tagging protocol is
* set
/* Include IMP port in dumb forwarding mode
*/
if (ds->ops->get_tag_protocol(ds) == DSA_TAG_PROTO_NONE) {
b53_read8(dev, B53_CTRL_PAGE, B53_SWITCH_CTRL, &mgmt);
mgmt |= B53_MII_DUMB_FWDG_EN;
b53_write8(dev, B53_CTRL_PAGE, B53_SWITCH_CTRL, mgmt);
}
b53_read8(dev, B53_CTRL_PAGE, B53_SWITCH_CTRL, &mgmt);
mgmt |= B53_MII_DUMB_FWDG_EN;
b53_write8(dev, B53_CTRL_PAGE, B53_SWITCH_CTRL, mgmt);
}
static void b53_enable_vlan(struct b53_device *dev, bool enable)
@ -612,6 +608,8 @@ static void b53_enable_cpu_port(struct b53_device *dev, int port)
PORT_CTRL_RX_MCST_EN |
PORT_CTRL_RX_UCST_EN;
b53_write8(dev, B53_CTRL_PAGE, B53_PORT_CTRL(port), port_ctrl);
b53_brcm_hdr_setup(dev->ds, port);
}
static void b53_enable_mib(struct b53_device *dev)
@ -1480,9 +1478,41 @@ void b53_br_fast_age(struct dsa_switch *ds, int port)
}
EXPORT_SYMBOL(b53_br_fast_age);
static bool b53_can_enable_brcm_tags(struct dsa_switch *ds)
{
unsigned int brcm_tag_mask;
unsigned int i;
/* Broadcom switches will accept enabling Broadcom tags on the
* following ports: 5, 7 and 8, any other port is not supported
*/
brcm_tag_mask = BIT(B53_CPU_PORT_25) | BIT(7) | BIT(B53_CPU_PORT);
for (i = 0; i < ds->num_ports; i++) {
if (dsa_is_cpu_port(ds, i)) {
if (!(BIT(i) & brcm_tag_mask)) {
dev_warn(ds->dev,
"Port %d is not Broadcom tag capable\n",
i);
return false;
}
}
}
return true;
}
static enum dsa_tag_protocol b53_get_tag_protocol(struct dsa_switch *ds)
{
return DSA_TAG_PROTO_NONE;
struct b53_device *dev = ds->priv;
/* Older models support a different tag format that we do not
* support in net/dsa/tag_brcm.c yet.
*/
if (is5325(dev) || is5365(dev) || !b53_can_enable_brcm_tags(ds))
return DSA_TAG_PROTO_NONE;
else
return DSA_TAG_PROTO_BRCM;
}
int b53_mirror_add(struct dsa_switch *ds, int port,