[linux 1/2] drivers/net/ftgmac100: Make EDO{R,T}R bits configurable
Joel Stanley
joel at jms.id.au
Fri Jun 24 17:25:45 AEST 2016
From: Andrew Jeffery <andrew at aj.id.au>
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 <andrew at aj.id.au>
Signed-off-by: Joel Stanley <joel at jms.id.au>
---
drivers/net/ethernet/faraday/ftgmac100.c | 39 ++++++++++++++++++++------------
drivers/net/ethernet/faraday/ftgmac100.h | 2 --
2 files changed, 25 insertions(+), 16 deletions(-)
diff --git a/drivers/net/ethernet/faraday/ftgmac100.c b/drivers/net/ethernet/faraday/ftgmac100.c
index 818477bbd491..2c2675d6ee3b 100644
--- a/drivers/net/ethernet/faraday/ftgmac100.c
+++ b/drivers/net/ethernet/faraday/ftgmac100.c
@@ -79,6 +79,9 @@ struct ftgmac100 {
bool use_ncsi;
bool enabled;
+
+ uint32_t rxdes0_edorr_mask;
+ uint32_t txdes0_edotr_mask;
};
static int ftgmac100_alloc_rx_page(struct ftgmac100 *priv,
@@ -268,10 +271,11 @@ 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)
@@ -309,9 +313,10 @@ 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,
@@ -401,7 +406,7 @@ 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);
}
@@ -472,7 +477,7 @@ 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));
@@ -564,10 +569,10 @@ 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;
@@ -588,9 +593,10 @@ 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)
@@ -709,7 +715,7 @@ 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);
@@ -800,7 +806,7 @@ 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;
}
@@ -847,7 +853,8 @@ 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];
@@ -857,7 +864,8 @@ 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:
@@ -1350,6 +1358,9 @@ static int ftgmac100_probe(struct platform_device *pdev)
priv->use_ncsi = false;
}
+ priv->rxdes0_edorr_mask = BIT(15);
+ priv->txdes0_edotr_mask = BIT(15);
+
netdev->ethtool_ops = &ftgmac100_ethtool_ops;
netdev->netdev_ops = &ftgmac100_netdev_ops;
if (pdev->dev.of_node &&
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)
--
2.8.1
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