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path: root/drivers/infiniband/hw/hfi1/pio.c
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Diffstat (limited to 'drivers/infiniband/hw/hfi1/pio.c')
-rw-r--r--drivers/infiniband/hw/hfi1/pio.c26
1 files changed, 23 insertions, 3 deletions
diff --git a/drivers/infiniband/hw/hfi1/pio.c b/drivers/infiniband/hw/hfi1/pio.c
index d5edb1afbb8f..d4022450b73f 100644
--- a/drivers/infiniband/hw/hfi1/pio.c
+++ b/drivers/infiniband/hw/hfi1/pio.c
@@ -995,7 +995,7 @@ static void sc_wait_for_packet_egress(struct send_context *sc, int pause)
/* counter is reset if occupancy count changes */
if (reg != reg_prev)
loop = 0;
- if (loop > 500) {
+ if (loop > 50000) {
/* timed out - bounce the link */
dd_dev_err(dd,
"%s: context %u(%u) timeout waiting for packets to egress, remaining count %u, bouncing link\n",
@@ -1798,6 +1798,21 @@ static void pio_map_rcu_callback(struct rcu_head *list)
}
/*
+ * Set credit return threshold for the kernel send context
+ */
+static void set_threshold(struct hfi1_devdata *dd, int scontext, int i)
+{
+ u32 thres;
+
+ thres = min(sc_percent_to_threshold(dd->kernel_send_context[scontext],
+ 50),
+ sc_mtu_to_threshold(dd->kernel_send_context[scontext],
+ dd->vld[i].mtu,
+ dd->rcd[0]->rcvhdrqentsize));
+ sc_set_cr_threshold(dd->kernel_send_context[scontext], thres);
+}
+
+/*
* pio_map_init - called when #vls change
* @dd: hfi1_devdata
* @port: port number
@@ -1872,11 +1887,16 @@ int pio_map_init(struct hfi1_devdata *dd, u8 port, u8 num_vls, u8 *vl_scontexts)
if (!newmap->map[i])
goto bail;
newmap->map[i]->mask = (1 << ilog2(sz)) - 1;
- /* assign send contexts */
+ /*
+ * assign send contexts and
+ * adjust credit return threshold
+ */
for (j = 0; j < sz; j++) {
- if (dd->kernel_send_context[scontext])
+ if (dd->kernel_send_context[scontext]) {
newmap->map[i]->ksc[j] =
dd->kernel_send_context[scontext];
+ set_threshold(dd, scontext, i);
+ }
if (++scontext >= first_scontext +
vl_scontexts[i])
/* wrap back to first send context */