renegade-project/linux-next
2
0
Fork 0
mirror of https://github.com/edk2-porting/linux-next.git synced 2025-01-07 21:24:00 +08:00
Code

net: mvpp2: reduce tx-fifo for loopback port

Browse Source 
1KB is enough for loopback port, so 2KB can be distributed
between other ports.

Signed-off-by: Stefan Chulski <stefanc@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Stefan Chulski 2021-02-14 16:10:03 +02:00 committed by David S. Miller
parent 8841f6e63f
commit 7c29451550
2 changed files with 7 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/net/ethernet/marvell/mvpp2/mvpp2.h
View File

@ -763,9 +763,9 @@
#define MVPP2_RX_FIFO_PORT_MIN_PKT 0x80
/* TX FIFO constants */
#define MVPP22_TX_FIFO_DATA_SIZE_16KB 16
#define MVPP22_TX_FIFO_DATA_SIZE_18KB 18
#define MVPP22_TX_FIFO_DATA_SIZE_10KB 10
#define MVPP22_TX_FIFO_DATA_SIZE_3KB 3
#define MVPP22_TX_FIFO_DATA_SIZE_1KB 1
#define MVPP2_TX_FIFO_THRESHOLD_MIN 256 /* Bytes */
#define MVPP2_TX_FIFO_THRESHOLD(kb) \
((kb) * 1024 - MVPP2_TX_FIFO_THRESHOLD_MIN)

10
drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
View File

@ -7093,8 +7093,8 @@ static void mvpp22_tx_fifo_set_hw(struct mvpp2 *priv, int port, int size)
}
/* Initialize TX FIFO's: the total FIFO size is 19kB on PPv2.2 and PPv2.3.
* 3kB fixed space must be assigned for the loopback port.
* Redistribute remaining avialable 16kB space among all active ports.
* 1kB fixed space must be assigned for the loopback port.
* Redistribute remaining avialable 18kB space among all active ports.
* The 10G interface should use 10kB (which is maximum possible size
* per single port).
*/
@ -7105,9 +7105,9 @@ static void mvpp22_tx_fifo_init(struct mvpp2 *priv)
int size_remainder;
int port, size;
/* The loopback requires fixed 3kB of the FIFO space assignment. */
/* The loopback requires fixed 1kB of the FIFO space assignment. */
mvpp22_tx_fifo_set_hw(priv, MVPP2_LOOPBACK_PORT_INDEX,
MVPP22_TX_FIFO_DATA_SIZE_3KB);
MVPP22_TX_FIFO_DATA_SIZE_1KB);
port_map = priv->port_map & ~BIT(MVPP2_LOOPBACK_PORT_INDEX);
/* Set TX FIFO size to 0 for inactive ports. */
@ -7115,7 +7115,7 @@ static void mvpp22_tx_fifo_init(struct mvpp2 *priv)
mvpp22_tx_fifo_set_hw(priv, port, 0);
/* Assign remaining TX FIFO space among all active ports. */
size_remainder = MVPP22_TX_FIFO_DATA_SIZE_16KB;
size_remainder = MVPP22_TX_FIFO_DATA_SIZE_18KB;
remaining_ports_count = hweight_long(port_map);
for_each_set_bit(port, &port_map, MVPP2_LOOPBACK_PORT_INDEX) {