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cxgb4vf: Enter debugging mode if FW is inaccessible

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If we are not able to reach firmware, enter debugging mode that will
help us to get adapter logs.

Signed-off-by: Arjun Vynipadath <arjun@chelsio.com>
Signed-off-by: Vishal Kulkarni <vishal@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Arjun Vynipadath 2019-02-28 15:33:16 +05:30 committed by David S. Miller
parent 64f40cdd07
commit 4a8acef78e
2 changed files with 33 additions and 13 deletions
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1
drivers/net/ethernet/chelsio/cxgb4vf/adapter.h
View File

@ -411,6 +411,7 @@ enum { /* adapter flags */
USING_MSIX = (1UL << 2),
QUEUES_BOUND = (1UL << 3),
ROOT_NO_RELAXED_ORDERING = (1UL << 4),
FW_OK = (1UL << 5),
};
/*

45
drivers/net/ethernet/chelsio/cxgb4vf/cxgb4vf_main.c
View File

@ -844,6 +844,13 @@ static int cxgb4vf_open(struct net_device *dev)
struct port_info *pi = netdev_priv(dev);
struct adapter *adapter = pi->adapter;
/*
* If we don't have a connection to the firmware there's nothing we
* can do.
*/
if (!(adapter->flags & FW_OK))
return -ENXIO;
/*
* If this is the first interface that we're opening on the "adapter",
* bring the "adapter" up now.
@ -2720,6 +2727,7 @@ static int adap_init0(struct adapter *adapter)
*/
size_nports_qsets(adapter);
adapter->flags |= FW_OK;
return 0;
}
@ -3084,7 +3092,9 @@ static int cxgb4vf_pci_probe(struct pci_dev *pdev,
err = adap_init0(adapter);
if (err)
goto err_unmap_bar;
dev_err(&pdev->dev,
"Adapter initialization failed, error %d. Continuing in debug mode\n",
err);
/* Initialize hash mac addr list */
INIT_LIST_HEAD(&adapter->mac_hlist);
@ -3109,13 +3119,6 @@ static int cxgb4vf_pci_probe(struct pci_dev *pdev,
break;
port_id = ffs(pmask) - 1;
pmask &= ~(1 << port_id);
viid = t4vf_alloc_vi(adapter, port_id);
if (viid < 0) {
dev_err(&pdev->dev, "cannot allocate VI for port %d:"
" err=%d\n", port_id, viid);
err = viid;
goto err_free_dev;
}
/*
* Allocate our network device and stitch things together.
@ -3123,7 +3126,6 @@ static int cxgb4vf_pci_probe(struct pci_dev *pdev,
netdev = alloc_etherdev_mq(sizeof(struct port_info),
MAX_PORT_QSETS);
if (netdev == NULL) {
t4vf_free_vi(adapter, viid);
err = -ENOMEM;
goto err_free_dev;
}
@ -3133,7 +3135,6 @@ static int cxgb4vf_pci_probe(struct pci_dev *pdev,
pi->adapter = adapter;
pi->pidx = pidx;
pi->port_id = port_id;
pi->viid = viid;
/*
* Initialize the starting state of our "port" and register
@ -3159,6 +3160,23 @@ static int cxgb4vf_pci_probe(struct pci_dev *pdev,
netdev->ethtool_ops = &cxgb4vf_ethtool_ops;
netdev->dev_port = pi->port_id;
/*
* If we haven't been able to contact the firmware, there's
* nothing else we can do for this "port" ...
*/
if (!(adapter->flags & FW_OK))
continue;
viid = t4vf_alloc_vi(adapter, port_id);
if (viid < 0) {
dev_err(&pdev->dev,
"cannot allocate VI for port %d: err=%d\n",
port_id, viid);
err = viid;
goto err_free_dev;
}
pi->viid = viid;
/*
* Initialize the hardware/software state for the port.
*/
@ -3302,13 +3320,13 @@ err_free_dev:
if (netdev == NULL)
continue;
pi = netdev_priv(netdev);
t4vf_free_vi(adapter, pi->viid);
if (pi->viid)
t4vf_free_vi(adapter, pi->viid);
if (test_bit(pidx, &adapter->registered_device_map))
unregister_netdev(netdev);
free_netdev(netdev);
}
err_unmap_bar:
if (!is_t4(adapter->params.chip))
iounmap(adapter->bar2);
@ -3381,7 +3399,8 @@ static void cxgb4vf_pci_remove(struct pci_dev *pdev)
continue;
pi = netdev_priv(netdev);
t4vf_free_vi(adapter, pi->viid);
if (pi->viid)
t4vf_free_vi(adapter, pi->viid);
free_netdev(netdev);
}
iounmap(adapter->regs);