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bgmac: support up to 3 cores (devices) on a bus 

Broadcom buses may have more than 1 Ethernet device. This is used e.g.
to have few interfaces connected to different switch ports. So far we
saw chipsets with only 2 devices (e.g. BCM4706) but recent ones have
up to 3 (e.g. Netgear R8000 uses 3rd interface for most of switch
traffic, lower interfaces are for some kind of offloading).

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Rafał Miłecki 2015-08-26 17:53:45 +02:00 committed by David S. Miller
parent 395250e483
commit 538e456319
1 changed files with 23 additions and 5 deletions
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28
drivers/net/ethernet/broadcom/bgmac.c
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@ -1549,11 +1549,20 @@ static int bgmac_probe(struct bcma_device *core)
struct net_device *net_dev;
struct bgmac *bgmac;
struct ssb_sprom *sprom = &core->bus->sprom;
u8 *mac = core->core_unit ? sprom->et1mac : sprom->et0mac;
u8 *mac;
int err;
/* We don't support 2nd, 3rd, ... units, SPROM has to be adjusted */
if (core->core_unit > 1) {
switch (core->core_unit) {
case 0:
mac = sprom->et0mac;
break;
case 1:
mac = sprom->et1mac;
break;
case 2:
mac = sprom->et2mac;
break;
default:
pr_err("Unsupported core_unit %d\n", core->core_unit);
return -ENOTSUPP;
}
@ -1588,8 +1597,17 @@ static int bgmac_probe(struct bcma_device *core)
}
bgmac->cmn = core->bus->drv_gmac_cmn.core;
bgmac->phyaddr = core->core_unit ? sprom->et1phyaddr :
sprom->et0phyaddr;
switch (core->core_unit) {
case 0:
bgmac->phyaddr = sprom->et0phyaddr;
break;
case 1:
bgmac->phyaddr = sprom->et1phyaddr;
break;
case 2:
bgmac->phyaddr = sprom->et2phyaddr;
break;
}
bgmac->phyaddr &= BGMAC_PHY_MASK;
if (bgmac->phyaddr == BGMAC_PHY_MASK) {
bgmac_err(bgmac, "No PHY found\n");