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cxgb4: Fix for write-combining stats configuration

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The write-combining configuration register SGE_STAT_CFG_A needs to
be configured after FW initializes the adapter, else FW will reset
the configuration

Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Hariprasad Shenai 2015-09-08 16:25:40 +05:30 committed by David S. Miller
parent fd1754fb8a
commit 2a485cf7db
1 changed files with 5 additions and 2 deletions
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7
drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c
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@ -4719,8 +4719,6 @@ static int init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
err = -ENOMEM; err = -ENOMEM;
goto out_free_adapter; goto out_free_adapter;
} }
t4_write_reg(adapter, SGE_STAT_CFG_A,
STATSOURCE_T5_V(7) | STATMODE_V(0));
} }
setup_memwin(adapter); setup_memwin(adapter);
@ -4732,6 +4730,11 @@ static int init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
if (err) if (err)
goto out_unmap_bar; goto out_unmap_bar;
/* configure SGE_STAT_CFG_A to read WC stats */
if (!is_t4(adapter->params.chip))
t4_write_reg(adapter, SGE_STAT_CFG_A,
STATSOURCE_T5_V(7) | STATMODE_V(0));
for_each_port(adapter, i) { for_each_port(adapter, i) {
struct net_device *netdev; struct net_device *netdev;