From 204e2f98c2d13f869b8541f3c57c7314f75cab11 Mon Sep 17 00:00:00 2001 From: Divy Le Ray Date: Tue, 6 May 2008 19:26:01 -0700 Subject: cxgb3 - fix EEH Reset the chip when the PCI link goes down. Preserve the napi structure when a sge qset's resources are freed. Replay only HW initialization when the chip comes out of reset. Signed-off-by: Divy Le ray Signed-off-by: Jeff Garzik --- drivers/net/cxgb3/sge.c | 29 +++++++++++++++++++++++++++-- 1 file changed, 27 insertions(+), 2 deletions(-) (limited to 'drivers/net/cxgb3/sge.c') diff --git a/drivers/net/cxgb3/sge.c b/drivers/net/cxgb3/sge.c index 98a6bbd11d4c..796eb305cdc3 100644 --- a/drivers/net/cxgb3/sge.c +++ b/drivers/net/cxgb3/sge.c @@ -538,6 +538,31 @@ static void *alloc_ring(struct pci_dev *pdev, size_t nelem, size_t elem_size, return p; } +/** + * t3_reset_qset - reset a sge qset + * @q: the queue set + * + * Reset the qset structure. + * the NAPI structure is preserved in the event of + * the qset's reincarnation, for example during EEH recovery. + */ +static void t3_reset_qset(struct sge_qset *q) +{ + if (q->adap && + !(q->adap->flags & NAPI_INIT)) { + memset(q, 0, sizeof(*q)); + return; + } + + q->adap = NULL; + memset(&q->rspq, 0, sizeof(q->rspq)); + memset(q->fl, 0, sizeof(struct sge_fl) * SGE_RXQ_PER_SET); + memset(q->txq, 0, sizeof(struct sge_txq) * SGE_TXQ_PER_SET); + q->txq_stopped = 0; + memset(&q->tx_reclaim_timer, 0, sizeof(q->tx_reclaim_timer)); +} + + /** * free_qset - free the resources of an SGE queue set * @adapter: the adapter owning the queue set @@ -594,7 +619,7 @@ static void t3_free_qset(struct adapter *adapter, struct sge_qset *q) q->rspq.desc, q->rspq.phys_addr); } - memset(q, 0, sizeof(*q)); + t3_reset_qset(q); } /** @@ -1365,7 +1390,7 @@ static void restart_ctrlq(unsigned long data) */ int t3_mgmt_tx(struct adapter *adap, struct sk_buff *skb) { - int ret; + int ret; local_bh_disable(); ret = ctrl_xmit(adap, &adap->sge.qs[0].txq[TXQ_CTRL], skb); local_bh_enable(); -- cgit v1.2.3