From 4badc385d1a9e140ad0992537237fc22211adad0 Mon Sep 17 00:00:00 2001 From: Scott Feldman Date: Thu, 3 Sep 2009 17:01:58 +0000 Subject: enic: workaround A0 erratum A0 revision ASIC has an erratum on the RQ desc cache on chip where the cache can become corrupted causing pkt buf writes to wrong locations. The s/w workaround is to post a dummy RQ desc in the ring every 32 descs, causing a flush of the cache. A0 parts are not production, but there are enough of these parts in the wild in test setups to warrant including workaround. A1 revision ASIC parts fix erratum. Signed-off-by: Scott Feldman Signed-off-by: David S. Miller --- drivers/net/enic/vnic_dev.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) (limited to 'drivers/net/enic/vnic_dev.c') diff --git a/drivers/net/enic/vnic_dev.c b/drivers/net/enic/vnic_dev.c index d5c28efedd98..c8d3fc7517b0 100644 --- a/drivers/net/enic/vnic_dev.c +++ b/drivers/net/enic/vnic_dev.c @@ -349,6 +349,25 @@ int vnic_dev_fw_info(struct vnic_dev *vdev, return err; } +int vnic_dev_hw_version(struct vnic_dev *vdev, enum vnic_dev_hw_version *hw_ver) +{ + struct vnic_devcmd_fw_info *fw_info; + int err; + + err = vnic_dev_fw_info(vdev, &fw_info); + if (err) + return err; + + if (strncmp(fw_info->hw_version, "A1", sizeof("A1")) == 0) + *hw_ver = VNIC_DEV_HW_VER_A1; + else if (strncmp(fw_info->hw_version, "A2", sizeof("A2")) == 0) + *hw_ver = VNIC_DEV_HW_VER_A2; + else + *hw_ver = VNIC_DEV_HW_VER_UNKNOWN; + + return 0; +} + int vnic_dev_spec(struct vnic_dev *vdev, unsigned int offset, unsigned int size, void *value) { -- cgit v1.2.3-59-g8ed1b