From 7906a4da0ef845d01e76f2187c23cc71ae00fa1d Mon Sep 17 00:00:00 2001 From: Andrew Jeffery Date: Thu, 22 Sep 2016 08:34:59 +0930 Subject: [PATCH] net/faraday: Make EDO{R,T}R bits configurable These bits are #defined at a fixed location. In order to support future hardware that has chosen to move these bits around move the bits into a member of the struct ftgmac100. Signed-off-by: Andrew Jeffery Signed-off-by: Joel Stanley Signed-off-by: David S. Miller --- drivers/net/ethernet/faraday/ftgmac100.c | 40 +++++++++++++++--------- drivers/net/ethernet/faraday/ftgmac100.h | 2 -- 2 files changed, 26 insertions(+), 16 deletions(-) diff --git a/drivers/net/ethernet/faraday/ftgmac100.c b/drivers/net/ethernet/faraday/ftgmac100.c index 40622567159a..62a88d1a1f99 100644 --- a/drivers/net/ethernet/faraday/ftgmac100.c +++ b/drivers/net/ethernet/faraday/ftgmac100.c @@ -79,6 +79,9 @@ struct ftgmac100 { int int_mask_all; bool use_ncsi; bool enabled; + + u32 rxdes0_edorr_mask; + u32 txdes0_edotr_mask; }; static int ftgmac100_alloc_rx_page(struct ftgmac100 *priv, @@ -259,10 +262,11 @@ static bool ftgmac100_rxdes_packet_ready(struct ftgmac100_rxdes *rxdes) return rxdes->rxdes0 & cpu_to_le32(FTGMAC100_RXDES0_RXPKT_RDY); } -static void ftgmac100_rxdes_set_dma_own(struct ftgmac100_rxdes *rxdes) +static void ftgmac100_rxdes_set_dma_own(const struct ftgmac100 *priv, + struct ftgmac100_rxdes *rxdes) { /* clear status bits */ - rxdes->rxdes0 &= cpu_to_le32(FTGMAC100_RXDES0_EDORR); + rxdes->rxdes0 &= cpu_to_le32(priv->rxdes0_edorr_mask); } static bool ftgmac100_rxdes_rx_error(struct ftgmac100_rxdes *rxdes) @@ -300,9 +304,10 @@ static bool ftgmac100_rxdes_multicast(struct ftgmac100_rxdes *rxdes) return rxdes->rxdes0 & cpu_to_le32(FTGMAC100_RXDES0_MULTICAST); } -static void ftgmac100_rxdes_set_end_of_ring(struct ftgmac100_rxdes *rxdes) +static void ftgmac100_rxdes_set_end_of_ring(const struct ftgmac100 *priv, + struct ftgmac100_rxdes *rxdes) { - rxdes->rxdes0 |= cpu_to_le32(FTGMAC100_RXDES0_EDORR); + rxdes->rxdes0 |= cpu_to_le32(priv->rxdes0_edorr_mask); } static void ftgmac100_rxdes_set_dma_addr(struct ftgmac100_rxdes *rxdes, @@ -393,7 +398,7 @@ ftgmac100_rx_locate_first_segment(struct ftgmac100 *priv) if (ftgmac100_rxdes_first_segment(rxdes)) return rxdes; - ftgmac100_rxdes_set_dma_own(rxdes); + ftgmac100_rxdes_set_dma_own(priv, rxdes); ftgmac100_rx_pointer_advance(priv); rxdes = ftgmac100_current_rxdes(priv); } @@ -464,7 +469,7 @@ static void ftgmac100_rx_drop_packet(struct ftgmac100 *priv) if (ftgmac100_rxdes_last_segment(rxdes)) done = true; - ftgmac100_rxdes_set_dma_own(rxdes); + ftgmac100_rxdes_set_dma_own(priv, rxdes); ftgmac100_rx_pointer_advance(priv); rxdes = ftgmac100_current_rxdes(priv); } while (!done && ftgmac100_rxdes_packet_ready(rxdes)); @@ -556,10 +561,11 @@ static bool ftgmac100_rx_packet(struct ftgmac100 *priv, int *processed) /****************************************************************************** * internal functions (transmit descriptor) *****************************************************************************/ -static void ftgmac100_txdes_reset(struct ftgmac100_txdes *txdes) +static void ftgmac100_txdes_reset(const struct ftgmac100 *priv, + struct ftgmac100_txdes *txdes) { /* clear all except end of ring bit */ - txdes->txdes0 &= cpu_to_le32(FTGMAC100_TXDES0_EDOTR); + txdes->txdes0 &= cpu_to_le32(priv->txdes0_edotr_mask); txdes->txdes1 = 0; txdes->txdes2 = 0; txdes->txdes3 = 0; @@ -580,9 +586,10 @@ static void ftgmac100_txdes_set_dma_own(struct ftgmac100_txdes *txdes) txdes->txdes0 |= cpu_to_le32(FTGMAC100_TXDES0_TXDMA_OWN); } -static void ftgmac100_txdes_set_end_of_ring(struct ftgmac100_txdes *txdes) +static void ftgmac100_txdes_set_end_of_ring(const struct ftgmac100 *priv, + struct ftgmac100_txdes *txdes) { - txdes->txdes0 |= cpu_to_le32(FTGMAC100_TXDES0_EDOTR); + txdes->txdes0 |= cpu_to_le32(priv->txdes0_edotr_mask); } static void ftgmac100_txdes_set_first_segment(struct ftgmac100_txdes *txdes) @@ -701,7 +708,7 @@ static bool ftgmac100_tx_complete_packet(struct ftgmac100 *priv) dev_kfree_skb(skb); - ftgmac100_txdes_reset(txdes); + ftgmac100_txdes_reset(priv, txdes); ftgmac100_tx_clean_pointer_advance(priv); @@ -792,7 +799,7 @@ static int ftgmac100_alloc_rx_page(struct ftgmac100 *priv, ftgmac100_rxdes_set_page(priv, rxdes, page); ftgmac100_rxdes_set_dma_addr(rxdes, map); - ftgmac100_rxdes_set_dma_own(rxdes); + ftgmac100_rxdes_set_dma_own(priv, rxdes); return 0; } @@ -839,7 +846,8 @@ static int ftgmac100_alloc_buffers(struct ftgmac100 *priv) return -ENOMEM; /* initialize RX ring */ - ftgmac100_rxdes_set_end_of_ring(&priv->descs->rxdes[RX_QUEUE_ENTRIES - 1]); + ftgmac100_rxdes_set_end_of_ring(priv, + &priv->descs->rxdes[RX_QUEUE_ENTRIES - 1]); for (i = 0; i < RX_QUEUE_ENTRIES; i++) { struct ftgmac100_rxdes *rxdes = &priv->descs->rxdes[i]; @@ -849,7 +857,8 @@ static int ftgmac100_alloc_buffers(struct ftgmac100 *priv) } /* initialize TX ring */ - ftgmac100_txdes_set_end_of_ring(&priv->descs->txdes[TX_QUEUE_ENTRIES - 1]); + ftgmac100_txdes_set_end_of_ring(priv, + &priv->descs->txdes[TX_QUEUE_ENTRIES - 1]); return 0; err: @@ -1336,6 +1345,9 @@ static int ftgmac100_probe(struct platform_device *pdev) priv->netdev = netdev; priv->dev = &pdev->dev; + priv->rxdes0_edorr_mask = BIT(15); + priv->txdes0_edotr_mask = BIT(15); + spin_lock_init(&priv->tx_lock); /* initialize NAPI */ diff --git a/drivers/net/ethernet/faraday/ftgmac100.h b/drivers/net/ethernet/faraday/ftgmac100.h index 13408d448b05..c258586ce4a4 100644 --- a/drivers/net/ethernet/faraday/ftgmac100.h +++ b/drivers/net/ethernet/faraday/ftgmac100.h @@ -189,7 +189,6 @@ struct ftgmac100_txdes { } __attribute__ ((aligned(16))); #define FTGMAC100_TXDES0_TXBUF_SIZE(x) ((x) & 0x3fff) -#define FTGMAC100_TXDES0_EDOTR (1 << 15) #define FTGMAC100_TXDES0_CRC_ERR (1 << 19) #define FTGMAC100_TXDES0_LTS (1 << 28) #define FTGMAC100_TXDES0_FTS (1 << 29) @@ -215,7 +214,6 @@ struct ftgmac100_rxdes { } __attribute__ ((aligned(16))); #define FTGMAC100_RXDES0_VDBC 0x3fff -#define FTGMAC100_RXDES0_EDORR (1 << 15) #define FTGMAC100_RXDES0_MULTICAST (1 << 16) #define FTGMAC100_RXDES0_BROADCAST (1 << 17) #define FTGMAC100_RXDES0_RX_ERR (1 << 18) -- 2.20.1