iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

net: mvpp2: fix bad MVPP2_TXQ_SCHED_TOKEN_CNTR_REG queue value

Browse Source 
[ Upstream commit 21808437214637952b61beaba6034d97880fbeb3 ]

MVPP2_TXQ_SCHED_TOKEN_CNTR_REG() expects the logical queue id but
the current code is passing the global tx queue offset, so it ends
up writing to unknown registers (between 0x8280 and 0x82fc, which
seemed to be unused by the hardware). This fixes the issue by using
the logical queue id instead.

Fixes: 3f518509dedc ("ethernet: Add new driver for Marvell Armada 375 network unit")
Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Antoine Tenart 2019-05-29 15:59:48 +02:00 committed by Greg Kroah-Hartman
parent b9119b6a7a
commit d8d0aa7401
1 changed files with 4 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
drivers/net/ethernet/marvell/mvpp2.c
View File

@ -4780,7 +4780,7 @@ static inline void mvpp2_xlg_max_rx_size_set(struct mvpp2_port *port)
/* Set defaults to the MVPP2 port */
static void mvpp2_defaults_set(struct mvpp2_port *port)
{
int tx_port_num, val, queue, ptxq, lrxq;
int tx_port_num, val, queue, lrxq;
if (port->priv->hw_version == MVPP21) {
/* Configure port to loopback if needed */
@ -4802,11 +4802,9 @@ static void mvpp2_defaults_set(struct mvpp2_port *port)
mvpp2_write(port->priv, MVPP2_TXP_SCHED_CMD_1_REG, 0);
/* Close bandwidth for all queues */
for (queue = 0; queue < MVPP2_MAX_TXQ; queue++) {
ptxq = mvpp2_txq_phys(port->id, queue);
for (queue = 0; queue < MVPP2_MAX_TXQ; queue++)
mvpp2_write(port->priv,
MVPP2_TXQ_SCHED_TOKEN_CNTR_REG(ptxq), 0);
}
MVPP2_TXQ_SCHED_TOKEN_CNTR_REG(queue), 0);
/* Set refill period to 1 usec, refill tokens
* and bucket size to maximum
@ -5645,7 +5643,7 @@ static void mvpp2_txq_deinit(struct mvpp2_port *port,
txq->descs_dma = 0;
/* Set minimum bandwidth for disabled TXQs */
mvpp2_write(port->priv, MVPP2_TXQ_SCHED_TOKEN_CNTR_REG(txq->id), 0);
mvpp2_write(port->priv, MVPP2_TXQ_SCHED_TOKEN_CNTR_REG(txq->log_id), 0);
/* Set Tx descriptors queue starting address and size */
cpu = get_cpu();