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cxgb4vf: Fix check to use new User Doorbell mechanism 

If we don't have access to the new User GTS (T5+), use the old doorbell
mechanism; otherwise use the new BAR2 mechanism.

Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Hariprasad Shenai 2015-07-09 14:55:46 +05:30 committed by David S. Miller
parent ba29becd77
commit 71d3c0b49a
1 changed files with 9 additions and 3 deletions
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12
drivers/net/ethernet/chelsio/cxgb4vf/sge.c
View File

@ -1898,7 +1898,10 @@ static int napi_rx_handler(struct napi_struct *napi, int budget)
rspq->unhandled_irqs++;
val = CIDXINC_V(work_done) | SEINTARM_V(intr_params);
if (is_t4(rspq->adapter->params.chip)) {
/* If we don't have access to the new User GTS (T5+), use the old
* doorbell mechanism; otherwise use the new BAR2 mechanism.
*/
if (unlikely(!rspq->bar2_addr)) {
t4_write_reg(rspq->adapter,
T4VF_SGE_BASE_ADDR + SGE_VF_GTS,
val | INGRESSQID_V((u32)rspq->cntxt_id));
@ -1998,10 +2001,13 @@ static unsigned int process_intrq(struct adapter *adapter)
}
val = CIDXINC_V(work_done) | SEINTARM_V(intrq->intr_params);
if (is_t4(adapter->params.chip))
/* If we don't have access to the new User GTS (T5+), use the old
* doorbell mechanism; otherwise use the new BAR2 mechanism.
*/
if (unlikely(!intrq->bar2_addr)) {
t4_write_reg(adapter, T4VF_SGE_BASE_ADDR + SGE_VF_GTS,
val | INGRESSQID_V(intrq->cntxt_id));
else {
} else {
writel(val | INGRESSQID_V(intrq->bar2_qid),
intrq->bar2_addr + SGE_UDB_GTS);
wmb();