From: Stefan Chulski <stefanc@marvell.com>
Date: Wed, 23 Dec 2020 20:35:21 +0200
Subject: net: mvpp2: fix pkt coalescing int-threshold configuration
Patch-mainline: v5.11-rc3
Git-commit: 4f374d2c43a9e5e773f1dee56db63bd6b8a36276
References: bsc#1098633
The packet coalescing interrupt threshold has separated registers
for different aggregated/cpu (sw-thread). The required value should
be loaded for every thread but not only for 1 current cpu.
Fixes: 213f428f5056 ("net: mvpp2: add support for TX interrupts and RX queue distribution modes")
Signed-off-by: Stefan Chulski <stefanc@marvell.com>
Link: https://lore.kernel.org/r/1608748521-11033-1-git-send-email-stefanc@marvell.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c | 11 ++++++-----
1 file changed, 6 insertions(+), 5 deletions(-)
--- a/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
+++ b/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
@@ -1900,17 +1900,18 @@ static void mvpp2_rx_pkts_coal_set(struc
static void mvpp2_tx_pkts_coal_set(struct mvpp2_port *port,
struct mvpp2_tx_queue *txq)
{
- unsigned int thread = mvpp2_cpu_to_thread(port->priv, get_cpu());
+ unsigned int thread;
u32 val;
if (txq->done_pkts_coal > MVPP2_TXQ_THRESH_MASK)
txq->done_pkts_coal = MVPP2_TXQ_THRESH_MASK;
val = (txq->done_pkts_coal << MVPP2_TXQ_THRESH_OFFSET);
- mvpp2_thread_write(port->priv, thread, MVPP2_TXQ_NUM_REG, txq->id);
- mvpp2_thread_write(port->priv, thread, MVPP2_TXQ_THRESH_REG, val);
-
- put_cpu();
+ /* PKT-coalescing registers are per-queue + per-thread */
+ for (thread = 0; thread < MVPP2_MAX_THREADS; thread++) {
+ mvpp2_thread_write(port->priv, thread, MVPP2_TXQ_NUM_REG, txq->id);
+ mvpp2_thread_write(port->priv, thread, MVPP2_TXQ_THRESH_REG, val);
+ }
}
static u32 mvpp2_usec_to_cycles(u32 usec, unsigned long clk_hz)