From 487234cc1954a1c09115a82b45ebcc2086657572 Mon Sep 17 00:00:00 2001 From: Florian Fainelli Date: Fri, 1 Sep 2017 17:32:34 -0700 Subject: [PATCH] net: systemport: Correctly set TSB endian for host Similarly to how we configure the RSB (Receive Status Block) we also need to set the TSB (Transmit Status Block) based on the host endian. This was missing from the commit indicated below. Fixes: 389a06bc534e ("net: systemport: Set correct RSB endian bits based on host") Signed-off-by: Florian Fainelli Signed-off-by: David S. Miller --- drivers/net/ethernet/broadcom/bcmsysport.c | 13 +++++++++++++ drivers/net/ethernet/broadcom/bcmsysport.h | 3 ++- 2 files changed, 15 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/broadcom/bcmsysport.c b/drivers/net/ethernet/broadcom/bcmsysport.c index eec77fae12a1..a6572b51435a 100644 --- a/drivers/net/ethernet/broadcom/bcmsysport.c +++ b/drivers/net/ethernet/broadcom/bcmsysport.c @@ -1392,6 +1392,19 @@ static int bcm_sysport_init_tx_ring(struct bcm_sysport_priv *priv, tdma_writel(priv, RING_IGNORE_STATUS, TDMA_DESC_RING_MAPPING(index)); tdma_writel(priv, 0, TDMA_DESC_RING_PCP_DEI_VID(index)); + /* Do not use tdma_control_bit() here because TSB_SWAP1 collides + * with the original definition of ACB_ALGO + */ + reg = tdma_readl(priv, TDMA_CONTROL); + if (priv->is_lite) + reg &= ~BIT(TSB_SWAP1); + /* Set a correct TSB format based on host endian */ + if (!IS_ENABLED(CONFIG_CPU_BIG_ENDIAN)) + reg |= tdma_control_bit(priv, TSB_SWAP0); + else + reg &= ~tdma_control_bit(priv, TSB_SWAP0); + tdma_writel(priv, reg, TDMA_CONTROL); + /* Program the number of descriptors as MAX_THRESHOLD and half of * its size for the hysteresis trigger */ diff --git a/drivers/net/ethernet/broadcom/bcmsysport.h b/drivers/net/ethernet/broadcom/bcmsysport.h index 80b4ffff63b7..82e401df199e 100644 --- a/drivers/net/ethernet/broadcom/bcmsysport.h +++ b/drivers/net/ethernet/broadcom/bcmsysport.h @@ -449,7 +449,8 @@ struct bcm_rsb { /* Uses 2 bits on SYSTEMPORT Lite and shifts everything by 1 bit, we * keep the SYSTEMPORT layout here and adjust with tdma_control_bit() */ -#define TSB_SWAP 2 +#define TSB_SWAP0 2 +#define TSB_SWAP1 3 #define ACB_ALGO 3 #define BUF_DATA_OFFSET_SHIFT 4 #define BUF_DATA_OFFSET_MASK 0x3ff -- 2.20.1