diff options
| author | Florian Fainelli <f.fainelli@gmail.com> | 2017-11-10 11:33:27 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-11-11 21:55:15 +0900 |
| commit | 7edc58d614d49c3b47ec4b9441d5e95758d0f711 (patch) | |
| tree | bf15a534c047a6e84ac335399f45f33e6d5e011b /drivers | |
| parent | c499696e7901bda18385ac723b7bd27c3a4af624 (diff) | |
| download | linux-7edc58d614d49c3b47ec4b9441d5e95758d0f711.tar.bz2 | |
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>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/dsa/b53/Kconfig | 1 | ||||
| -rw-r--r-- | drivers/net/dsa/b53/b53_common.c | 48 |
2 files changed, 40 insertions, 9 deletions
diff --git a/drivers/net/dsa/b53/Kconfig b/drivers/net/dsa/b53/Kconfig index 27f32a50df57..b413d100c6b3 100644 --- a/drivers/net/dsa/b53/Kconfig +++ b/drivers/net/dsa/b53/Kconfig @@ -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 diff --git a/drivers/net/dsa/b53/b53_common.c b/drivers/net/dsa/b53/b53_common.c index 17f12484ce24..44a9a03bff55 100644 --- a/drivers/net/dsa/b53/b53_common.c +++ b/drivers/net/dsa/b53/b53_common.c @@ -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, |