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| author | Nicholas Nunley <nicholasx.d.nunley@intel.com> | 2010-04-27 19:47:49 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-04-27 19:47:49 -0700 |
| commit | d5ffd75a27fade39ba5df3b07290c5a2c297b9bd (patch) | |
| tree | 6dc34ff09fd8fa06809a9f5aea5f876f0b67b1cc /drivers/net/ixgbe | |
| parent | afe0159d935ab731c682e811356914bb2be9470c (diff) | |
| download | linux-d5ffd75a27fade39ba5df3b07290c5a2c297b9bd.tar.gz linux-d5ffd75a27fade39ba5df3b07290c5a2c297b9bd.tar.bz2 linux-d5ffd75a27fade39ba5df3b07290c5a2c297b9bd.zip | |
ixgbe: disable MSI-X by default on certain Cisco adapters
Due to an errata in 82598 parts MSI-X needs to be disabled
in certain ixgbe devices designed to transfer peer-to-peer
traffic on the PCIe bus. This patch sets the default
interrupt type to MSI rather than MSI-X for specific Cisco
ixgbe adapters.
Signed-off-by: Nicholas Nunley <nicholasx.d.nunley@intel.com>
Acked-by: John Ronciak <john.ronciak@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ixgbe')
| -rw-r--r-- | drivers/net/ixgbe/ixgbe.h | 4 | ||||
| -rw-r--r-- | drivers/net/ixgbe/ixgbe_main.c | 17 |
2 files changed, 20 insertions, 1 deletions
diff --git a/drivers/net/ixgbe/ixgbe.h b/drivers/net/ixgbe/ixgbe.h index 79c35ae3718c..ec6bcc0660c6 100644 --- a/drivers/net/ixgbe/ixgbe.h +++ b/drivers/net/ixgbe/ixgbe.h @@ -104,6 +104,10 @@ #define MAX_EMULATION_MAC_ADDRS 16 #define VMDQ_P(p) ((p) + adapter->num_vfs) +#define IXGBE_SUBDEV_ID_82598AF_MEZZ 0x0049 +#define IXGBE_SUBDEV_ID_82598AF_MENLO_Q_MEZZ 0x004a +#define IXGBE_SUBDEV_ID_82598AF_MENLO_E_MEZZ 0x004b + struct vf_data_storage { unsigned char vf_mac_addresses[ETH_ALEN]; u16 vf_mc_hashes[IXGBE_MAX_VF_MC_ENTRIES]; diff --git a/drivers/net/ixgbe/ixgbe_main.c b/drivers/net/ixgbe/ixgbe_main.c index 2ae5a5159ce4..ff59f88dc7a1 100644 --- a/drivers/net/ixgbe/ixgbe_main.c +++ b/drivers/net/ixgbe/ixgbe_main.c @@ -4314,6 +4314,9 @@ static int ixgbe_set_interrupt_capability(struct ixgbe_adapter *adapter) int err = 0; int vector, v_budget; + if (!(adapter->flags & IXGBE_FLAG_MSIX_CAPABLE)) + goto try_msi; + /* * It's easy to be greedy for MSI-X vectors, but it really * doesn't do us much good if we have a lot more vectors @@ -4345,7 +4348,7 @@ static int ixgbe_set_interrupt_capability(struct ixgbe_adapter *adapter) if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) goto out; } - +try_msi: adapter->flags &= ~IXGBE_FLAG_DCB_ENABLED; adapter->flags &= ~IXGBE_FLAG_RSS_ENABLED; adapter->flags &= ~IXGBE_FLAG_FDIR_HASH_CAPABLE; @@ -4626,6 +4629,18 @@ static int __devinit ixgbe_sw_init(struct ixgbe_adapter *adapter) adapter->ring_feature[RING_F_RSS].indices = rss; adapter->flags |= IXGBE_FLAG_RSS_ENABLED; adapter->ring_feature[RING_F_DCB].indices = IXGBE_MAX_DCB_INDICES; + adapter->flags |= IXGBE_FLAG_MSIX_CAPABLE; + if (adapter->hw.device_id == IXGBE_DEV_ID_82598AF_DUAL_PORT) { + switch (adapter->hw.subsystem_device_id) { + case IXGBE_SUBDEV_ID_82598AF_MEZZ: + case IXGBE_SUBDEV_ID_82598AF_MENLO_Q_MEZZ: + case IXGBE_SUBDEV_ID_82598AF_MENLO_E_MEZZ: + adapter->flags &= ~IXGBE_FLAG_MSIX_CAPABLE; + break; + default: + break; + } + } if (hw->mac.type == ixgbe_mac_82598EB) { if (hw->device_id == IXGBE_DEV_ID_82598AT) adapter->flags |= IXGBE_FLAG_FAN_FAIL_CAPABLE; |