diff options
| author | Florian Fainelli <f.fainelli@gmail.com> | 2017-09-19 20:46:48 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-09-20 02:08:53 +0300 |
| commit | b409a9efa183d92d99bc314fb26ebc1c2a8b4379 (patch) | |
| tree | 91a6a496ea7a511148733c43eff4c0e7adbd2886 /drivers/net/dsa/b53/b53_common.c | |
| parent | 5345862e9af02ce3780639bfe350ed2da9f8af13 (diff) | |
| download | linux-b409a9efa183d92d99bc314fb26ebc1c2a8b4379.tar.xz | |
net: dsa: b53: Move Broadcom header setup to b53
The code to enable Broadcom tags/headers is largely switch independent,
and in preparation for enabling it for multiple devices with b53, move
the code we have in bcm_sf2.c to b53_common.c
Reviewed-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/dsa/b53/b53_common.c')
| -rw-r--r-- | drivers/net/dsa/b53/b53_common.c | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/drivers/net/dsa/b53/b53_common.c b/drivers/net/dsa/b53/b53_common.c index 3297af6aab8a..aa2187c71ea5 100644 --- a/drivers/net/dsa/b53/b53_common.c +++ b/drivers/net/dsa/b53/b53_common.c @@ -538,6 +538,53 @@ static void b53_disable_port(struct dsa_switch *ds, int port, b53_write8(dev, B53_CTRL_PAGE, B53_PORT_CTRL(port), reg); } +void b53_brcm_hdr_setup(struct dsa_switch *ds, int port) +{ + struct b53_device *dev = ds->priv; + u8 hdr_ctl, val; + u16 reg; + + /* Resolve which bit controls the Broadcom tag */ + switch (port) { + case 8: + val = BRCM_HDR_P8_EN; + break; + case 7: + val = BRCM_HDR_P7_EN; + break; + case 5: + val = BRCM_HDR_P5_EN; + break; + default: + val = 0; + break; + } + + /* Enable Broadcom tags for IMP port */ + b53_read8(dev, B53_MGMT_PAGE, B53_BRCM_HDR, &hdr_ctl); + hdr_ctl |= val; + b53_write8(dev, B53_MGMT_PAGE, B53_BRCM_HDR, hdr_ctl); + + /* Registers below are only accessible on newer devices */ + if (!is58xx(dev)) + return; + + /* Enable reception Broadcom tag for CPU TX (switch RX) to + * allow us to tag outgoing frames + */ + b53_read16(dev, B53_MGMT_PAGE, B53_BRCM_HDR_RX_DIS, ®); + 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 &= ~BIT(port); + b53_write16(dev, B53_MGMT_PAGE, B53_BRCM_HDR_TX_DIS, reg); +} +EXPORT_SYMBOL(b53_brcm_hdr_setup); + static void b53_enable_cpu_port(struct b53_device *dev, int port) { u8 port_ctrl; |