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net: dsa: bcm_sf2: Disable learning while in WoL 

When we are in Wake-on-LAN, we operate with the host sofware not running
a network stack, so we want to the switch to flood packets in order to
cause a system wake-up when matching specific filters (unicast or
multicast). This was not necessary before since we supported Magic
Packet which are targeting a broadcast MAC address which the switch
already floods.

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>
This commit is contained in:
Florian Fainelli 2018-08-03 11:08:42 -07:00 committed by David S. Miller
parent 2104bc0ab0
commit c0e6820b7e
2 changed files with 13 additions and 1 deletions
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12
drivers/net/dsa/bcm_sf2.c
View File

@ -166,6 +166,11 @@ static int bcm_sf2_port_setup(struct dsa_switch *ds, int port,
reg &= ~P_TXQ_PSM_VDD(port);
core_writel(priv, reg, CORE_MEM_PSM_VDD_CTRL);
/* Enable learning */
reg = core_readl(priv, CORE_DIS_LEARN);
reg &= ~BIT(port);
core_writel(priv, reg, CORE_DIS_LEARN);
/* Enable Broadcom tags for that port if requested */
if (priv->brcm_tag_mask & BIT(port))
b53_brcm_hdr_setup(ds, port);
@ -222,8 +227,13 @@ static void bcm_sf2_port_disable(struct dsa_switch *ds, int port,
struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
u32 reg;
if (priv->wol_ports_mask & (1 << port))
/* Disable learning while in WoL mode */
if (priv->wol_ports_mask & (1 << port)) {
reg = core_readl(priv, CORE_DIS_LEARN);
reg |= BIT(port);
core_writel(priv, reg, CORE_DIS_LEARN);
return;
}
if (port == priv->moca_port)
bcm_sf2_port_intr_disable(priv, port);

2
drivers/net/dsa/bcm_sf2_regs.h
View File

@ -168,6 +168,8 @@ enum bcm_sf2_reg_offs {
#define CORE_SWITCH_CTRL 0x00088
#define MII_DUMB_FWDG_EN (1 << 6)
#define CORE_DIS_LEARN 0x000f0
#define CORE_SFT_LRN_CTRL 0x000f8
#define SW_LEARN_CNTL(x) (1 << (x))