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Code Issues

ralink: improve tx_timeout function

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* use default timeout value
* print more debug ring info
* move timeout reset function to workqueue

Signed-off-by: michael lee <igvtee@gmail.com>

SVN-Revision: 44043
This commit is contained in:
Felix Fietkau 2015-01-18 20:16:50 +00:00
parent 69ee1807ed
commit 50588ef192
4 changed files with 87 additions and 15 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

85
target/linux/ramips/files/drivers/net/ethernet/ralink/ralink_soc_eth.c
View File

@ -40,7 +40,6 @@
#include "mdio.h"
#include "ralink_ethtool.h"
#define TX_TIMEOUT (2 * HZ)
#define MAX_RX_LENGTH 1536
#define FE_RX_OFFSET (NET_SKB_PAD + NET_IP_ALIGN)
#define FE_RX_HLEN (FE_RX_OFFSET + VLAN_ETH_HLEN + VLAN_HLEN + \
@ -72,9 +71,11 @@ static const u32 fe_reg_table_default[FE_REG_COUNT] = {
[FE_REG_TX_BASE_PTR0] = FE_TX_BASE_PTR0,
[FE_REG_TX_MAX_CNT0] = FE_TX_MAX_CNT0,
[FE_REG_TX_CTX_IDX0] = FE_TX_CTX_IDX0,
[FE_REG_TX_DTX_IDX0] = FE_TX_DTX_IDX0,
[FE_REG_RX_BASE_PTR0] = FE_RX_BASE_PTR0,
[FE_REG_RX_MAX_CNT0] = FE_RX_MAX_CNT0,
[FE_REG_RX_CALC_IDX0] = FE_RX_CALC_IDX0,
[FE_REG_RX_DRX_IDX0] = FE_RX_DRX_IDX0,
[FE_REG_FE_INT_ENABLE] = FE_FE_INT_ENABLE,
[FE_REG_FE_INT_STATUS] = FE_FE_INT_STATUS,
[FE_REG_FE_DMA_VID_BASE] = FE_DMA_VID0,
@ -84,6 +85,11 @@ static const u32 fe_reg_table_default[FE_REG_COUNT] = {
static const u32 *fe_reg_table = fe_reg_table_default;
struct fe_work_t {
int bitnr;
void (*action)(struct fe_priv *);
};
static void __iomem *fe_base = 0;
void fe_w32(u32 val, unsigned reg)
@ -683,13 +689,11 @@ static int fe_start_xmit(struct sk_buff *skb, struct net_device *dev)
return NETDEV_TX_OK;
}
spin_lock(&priv->page_lock);
tx_num = 1 + (skb_shinfo(skb)->nr_frags >> 1);
tx = fe_reg_r32(FE_REG_TX_CTX_IDX0);
if (unlikely(fe_empty_txd(priv, tx) <= tx_num))
{
netif_stop_queue(dev);
spin_unlock(&priv->page_lock);
netif_err(priv, tx_queued,dev,
"Tx Ring full when queue awake!\n");
return NETDEV_TX_BUSY;
@ -704,8 +708,6 @@ static int fe_start_xmit(struct sk_buff *skb, struct net_device *dev)
stats->tx_bytes += len;
}
spin_unlock(&priv->page_lock);
return NETDEV_TX_OK;
}
@ -779,8 +781,8 @@ static int fe_poll_rx(struct napi_struct *napi, int budget,
dma_unmap_single(&netdev->dev, trxd.rxd1,
priv->rx_buf_size, DMA_FROM_DEVICE);
pktlen = RX_DMA_PLEN0(trxd.rxd2);
skb_put(skb, pktlen);
skb->dev = netdev;
skb_put(skb, pktlen);
if (trxd.rxd4 & checksum_bit) {
skb->ip_summed = CHECKSUM_UNNECESSARY;
} else {
@ -902,7 +904,7 @@ poll_again:
if (unlikely(netif_msg_intr(priv))) {
mask = fe_reg_r32(FE_REG_FE_INT_ENABLE);
netdev_info(priv->netdev,
"done tx %d, rx %d, intr 0x%x/0x%x\n",
"done tx %d, rx %d, intr 0x%08x/0x%x\n",
tx_done, rx_done, status, mask);
}
@ -924,13 +926,27 @@ static void fe_tx_timeout(struct net_device *dev)
priv->netdev->stats.tx_errors++;
netif_err(priv, tx_err, dev,
"transmit timed out, waking up the queue\n");
netif_info(priv, drv, dev, ": dma_cfg:%08x, free_idx:%d, " \
"dma_ctx_idx=%u, dma_crx_idx=%u\n",
fe_reg_r32(FE_REG_PDMA_GLO_CFG), priv->tx_free_idx,
"transmit timed out\n");
netif_info(priv, drv, dev, "dma_cfg:%08x\n",
fe_reg_r32(FE_REG_PDMA_GLO_CFG));
netif_info(priv, drv, dev, "tx_ring=%d, " \
"base=%08x, max=%u, ctx=%u, dtx=%u, fdx=%d\n", 0,
fe_reg_r32(FE_REG_TX_BASE_PTR0),
fe_reg_r32(FE_REG_TX_MAX_CNT0),
fe_reg_r32(FE_REG_TX_CTX_IDX0),
fe_reg_r32(FE_REG_RX_CALC_IDX0));
netif_wake_queue(dev);
fe_reg_r32(FE_REG_TX_DTX_IDX0),
priv->tx_free_idx
);
netif_info(priv, drv, dev, "rx_ring=%d, " \
"base=%08x, max=%u, calc=%u, drx=%u\n", 0,
fe_reg_r32(FE_REG_RX_BASE_PTR0),
fe_reg_r32(FE_REG_RX_MAX_CNT0),
fe_reg_r32(FE_REG_RX_CALC_IDX0),
fe_reg_r32(FE_REG_RX_DRX_IDX0)
);
if (!test_and_set_bit(FE_FLAG_RESET_PENDING, priv->pending_flags))
schedule_work(&priv->pending_work);
}
static irqreturn_t fe_handle_irq(int irq, void *dev)
@ -1287,6 +1303,45 @@ static const struct net_device_ops fe_netdev_ops = {
#endif
};
static void fe_reset_pending(struct fe_priv *priv)
{
struct net_device *dev = priv->netdev;
int err;
rtnl_lock();
fe_stop(dev);
err = fe_open(dev);
if (err)
goto error;
rtnl_unlock();
return;
error:
netif_alert(priv, ifup, dev,
"Driver up/down cycle failed, closing device.\n");
dev_close(dev);
rtnl_unlock();
}
static const struct fe_work_t fe_work[] = {
{FE_FLAG_RESET_PENDING, fe_reset_pending},
};
static void fe_pending_work(struct work_struct *work)
{
struct fe_priv *priv = container_of(work, struct fe_priv, pending_work);
int i;
bool pending;
for (i = 0; i < ARRAY_SIZE(fe_work); i++) {
pending = test_and_clear_bit(fe_work[i].bitnr,
priv->pending_flags);
if (pending)
fe_work[i].action(priv);
}
}
static int fe_probe(struct platform_device *pdev)
{
struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
@ -1323,7 +1378,6 @@ static int fe_probe(struct platform_device *pdev)
SET_NETDEV_DEV(netdev, &pdev->dev);
netdev->netdev_ops = &fe_netdev_ops;
netdev->base_addr = (unsigned long) fe_base;
netdev->watchdog_timeo = TX_TIMEOUT;
netdev->irq = platform_get_irq(pdev, 0);
if (netdev->irq < 0) {
@ -1370,6 +1424,7 @@ static int fe_probe(struct platform_device *pdev)
err = -EINVAL;
goto err_free_dev;
}
INIT_WORK(&priv->pending_work, fe_pending_work);
netif_napi_add(netdev, &priv->rx_napi, fe_poll, 32);
fe_set_ethtool_ops(netdev);
@ -1404,6 +1459,8 @@ static int fe_remove(struct platform_device *pdev)
if (priv->hw_stats)
kfree(priv->hw_stats);
cancel_work_sync(&priv->pending_work);
unregister_netdev(dev);
free_netdev(dev);
platform_set_drvdata(pdev, NULL);

11
target/linux/ramips/files/drivers/net/ethernet/ralink/ralink_soc_eth.h
View File

@ -33,9 +33,11 @@ enum fe_reg {
FE_REG_TX_BASE_PTR0,
FE_REG_TX_MAX_CNT0,
FE_REG_TX_CTX_IDX0,
FE_REG_TX_DTX_IDX0,
FE_REG_RX_BASE_PTR0,
FE_REG_RX_MAX_CNT0,
FE_REG_RX_CALC_IDX0,
FE_REG_RX_DRX_IDX0,
FE_REG_FE_INT_ENABLE,
FE_REG_FE_INT_STATUS,
FE_REG_FE_DMA_VID_BASE,
@ -44,7 +46,12 @@ enum fe_reg {
FE_REG_COUNT
};
#define FE_DRV_VERSION "0.1.0"
enum fe_work_flag {
FE_FLAG_RESET_PENDING,
FE_FLAG_MAX
};
#define FE_DRV_VERSION "0.1.1"
/* power of 2 to let NEXT_TX_DESP_IDX work */
#ifdef CONFIG_SOC_MT7621
@ -451,6 +458,8 @@ struct fe_priv
struct fe_hw_stats *hw_stats;
unsigned long vlan_map;
struct work_struct pending_work;
DECLARE_BITMAP(pending_flags, FE_FLAG_MAX);
};
extern const struct of_device_id of_fe_match[];

4
target/linux/ramips/files/drivers/net/ethernet/ralink/soc_mt7620.c
View File

@ -72,9 +72,11 @@ static const u32 mt7620_reg_table[FE_REG_COUNT] = {
[FE_REG_TX_BASE_PTR0] = RT5350_TX_BASE_PTR0,
[FE_REG_TX_MAX_CNT0] = RT5350_TX_MAX_CNT0,
[FE_REG_TX_CTX_IDX0] = RT5350_TX_CTX_IDX0,
[FE_REG_TX_DTX_IDX0] = RT5350_TX_DTX_IDX0,
[FE_REG_RX_BASE_PTR0] = RT5350_RX_BASE_PTR0,
[FE_REG_RX_MAX_CNT0] = RT5350_RX_MAX_CNT0,
[FE_REG_RX_CALC_IDX0] = RT5350_RX_CALC_IDX0,
[FE_REG_RX_DRX_IDX0] = RT5350_RX_DRX_IDX0,
[FE_REG_FE_INT_ENABLE] = RT5350_FE_INT_ENABLE,
[FE_REG_FE_INT_STATUS] = RT5350_FE_INT_STATUS,
[FE_REG_FE_DMA_VID_BASE] = MT7620_DMA_VID,
@ -89,9 +91,11 @@ static const u32 mt7621_reg_table[FE_REG_COUNT] = {
[FE_REG_TX_BASE_PTR0] = RT5350_TX_BASE_PTR0,
[FE_REG_TX_MAX_CNT0] = RT5350_TX_MAX_CNT0,
[FE_REG_TX_CTX_IDX0] = RT5350_TX_CTX_IDX0,
[FE_REG_TX_DTX_IDX0] = RT5350_TX_DTX_IDX0,
[FE_REG_RX_BASE_PTR0] = RT5350_RX_BASE_PTR0,
[FE_REG_RX_MAX_CNT0] = RT5350_RX_MAX_CNT0,
[FE_REG_RX_CALC_IDX0] = RT5350_RX_CALC_IDX0,
[FE_REG_RX_DRX_IDX0] = RT5350_RX_DRX_IDX0,
[FE_REG_FE_INT_ENABLE] = RT5350_FE_INT_ENABLE,
[FE_REG_FE_INT_STATUS] = RT5350_FE_INT_STATUS,
[FE_REG_FE_DMA_VID_BASE] = MT7621_DMA_VID,

2
target/linux/ramips/files/drivers/net/ethernet/ralink/soc_rt305x.c
View File

@ -33,9 +33,11 @@ static const u32 rt5350_reg_table[FE_REG_COUNT] = {
[FE_REG_TX_BASE_PTR0] = RT5350_TX_BASE_PTR0,
[FE_REG_TX_MAX_CNT0] = RT5350_TX_MAX_CNT0,
[FE_REG_TX_CTX_IDX0] = RT5350_TX_CTX_IDX0,
[FE_REG_TX_DTX_IDX0] = RT5350_TX_DTX_IDX0,
[FE_REG_RX_BASE_PTR0] = RT5350_RX_BASE_PTR0,
[FE_REG_RX_MAX_CNT0] = RT5350_RX_MAX_CNT0,
[FE_REG_RX_CALC_IDX0] = RT5350_RX_CALC_IDX0,
[FE_REG_RX_DRX_IDX0] = RT5350_RX_DRX_IDX0,
[FE_REG_FE_INT_ENABLE] = RT5350_FE_INT_ENABLE,
[FE_REG_FE_INT_STATUS] = RT5350_FE_INT_STATUS,
[FE_REG_FE_RST_GL] = 0,