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From 538e4563198cd3d1a8e74c47fee3e49dc93e4a95 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com>
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 <zajec5@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
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");
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