iw_cxgb4: Detect Ing. Padding Boundary at run-time
Updates iw_cxgb4 to determine the Ingress Padding Boundary from
cxgb4_lld_info, and take subsequent actions.
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/infiniband/hw/cxgb4/device.c b/drivers/infiniband/hw/cxgb4/device.c
index dd93aad..88291ef 100644
--- a/drivers/infiniband/hw/cxgb4/device.c
+++ b/drivers/infiniband/hw/cxgb4/device.c
@@ -768,6 +768,27 @@
}
devp->rdev.lldi = *infop;
+ /* init various hw-queue params based on lld info */
+ PDBG("%s: Ing. padding boundary is %d, egrsstatuspagesize = %d\n",
+ __func__, devp->rdev.lldi.sge_ingpadboundary,
+ devp->rdev.lldi.sge_egrstatuspagesize);
+
+ devp->rdev.hw_queue.t4_eq_status_entries =
+ devp->rdev.lldi.sge_ingpadboundary > 64 ? 2 : 1;
+ devp->rdev.hw_queue.t4_max_eq_size =
+ 65520 - devp->rdev.hw_queue.t4_eq_status_entries;
+ devp->rdev.hw_queue.t4_max_iq_size = 65520 - 1;
+ devp->rdev.hw_queue.t4_max_rq_size =
+ 8192 - devp->rdev.hw_queue.t4_eq_status_entries;
+ devp->rdev.hw_queue.t4_max_sq_size =
+ devp->rdev.hw_queue.t4_max_eq_size - 1;
+ devp->rdev.hw_queue.t4_max_qp_depth =
+ devp->rdev.hw_queue.t4_max_rq_size - 1;
+ devp->rdev.hw_queue.t4_max_cq_depth =
+ devp->rdev.hw_queue.t4_max_iq_size - 1;
+ devp->rdev.hw_queue.t4_stat_len =
+ devp->rdev.lldi.sge_egrstatuspagesize;
+
/*
* For T5 devices, we map all of BAR2 with WC.
* For T4 devices with onchip qp mem, we map only that part