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 <haripra...@chelsio.com>
---
drivers/net/ethernet/chelsio/cxgb4vf/sge.c | 12 +++++++++---
1 file changed, 9 insertions(+), 3 deletions(-)
diff --git a/drivers/net/ethernet/chelsio/cxgb4vf/sge.c
b/drivers/net/ethernet/chelsio/cxgb4vf/sge.c
index ad53e5a..1d5e77a 100644
--- a/drivers/net/ethernet/chelsio/cxgb4vf/sge.c
+++ b/drivers/net/ethernet/chelsio/cxgb4vf/sge.c
@@ -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();
--
2.3.4
--
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