From 538e4563198cd3d1a8e74c47fee3e49dc93e4a95 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= Date: Wed, 26 Aug 2015 17:53:45 +0200 Subject: [PATCH] bgmac: support up to 3 cores (devices) on a bus MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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 Signed-off-by: David S. Miller --- drivers/net/ethernet/broadcom/bgmac.c | 28 +++++++++++++++++++++++----- 1 file changed, 23 insertions(+), 5 deletions(-) --- a/drivers/net/ethernet/broadcom/bgmac.c +++ b/drivers/net/ethernet/broadcom/bgmac.c @@ -1549,11 +1549,20 @@ static int bgmac_probe(struct bcma_devic 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_devic } 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");