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Commit a9b0b2fa authored by Darek Marcinkiewicz's avatar Darek Marcinkiewicz Committed by David S. Miller
Browse files

net: ec_bhf: remove excessive debug messages 



This cuts down the number of debug information spit out by
the driver.

Signed-off-by: default avatarDariusz Marcinkiewicz <reksio@newterm.pl>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent a98406e2

drivers/net/ethernet/ec_bhf.c

+10 −91
Original line number Diff line number Diff line 
 /*

 * drivers/net/ethernet/beckhoff/ec_bhf.c

 * drivers/net/ethernet/ec_bhf.c

 *

 * Copyright (C) 2014 Darek Marcinkiewicz <reksio@newterm.pl>

 *
@@ -18,9 +18,6 @@ 
 * Those can be found on Bechhoff CX50xx industrial PCs.

 */



#if 0

#define DEBUG

#endif

#include <linux/kernel.h>

#include <linux/module.h>

#include <linux/moduleparam.h>
@@ -74,6 +71,8 @@ 


#define DMA_WINDOW_SIZE_MASK	0xfffffffc



#define ETHERCAT_MASTER_ID	0x14



static struct pci_device_id ids[] = {

	{ PCI_DEVICE(0x15ec, 0x5000), },

	{ 0, }
@@ -131,7 +130,6 @@ struct bhf_dma { 


struct ec_bhf_priv {

	struct net_device *net_dev;



	struct pci_dev *dev;



	void __iomem *io;
@@ -162,32 +160,6 @@ struct ec_bhf_priv { 


#define PRIV_TO_DEV(priv) (&(priv)->dev->dev)



#define ETHERCAT_MASTER_ID	0x14



static void ec_bhf_print_status(struct ec_bhf_priv *priv)

{

	struct device *dev = PRIV_TO_DEV(priv);



	dev_dbg(dev, "Frame error counter: %d\n",

		ioread8(priv->mac_io + MAC_FRAME_ERR_CNT));

	dev_dbg(dev, "RX error counter: %d\n",

		ioread8(priv->mac_io + MAC_RX_ERR_CNT));

	dev_dbg(dev, "CRC error counter: %d\n",

		ioread8(priv->mac_io + MAC_CRC_ERR_CNT));

	dev_dbg(dev, "TX frame counter: %d\n",

		ioread32(priv->mac_io + MAC_TX_FRAME_CNT));

	dev_dbg(dev, "RX frame counter: %d\n",

		ioread32(priv->mac_io + MAC_RX_FRAME_CNT));

	dev_dbg(dev, "TX fifo level: %d\n",

		ioread8(priv->mac_io + MAC_TX_FIFO_LVL));

	dev_dbg(dev, "Dropped frames: %d\n",

		ioread8(priv->mac_io + MAC_DROPPED_FRMS));

	dev_dbg(dev, "Connected with CCAT slot: %d\n",

		ioread8(priv->mac_io + MAC_CONNECTED_CCAT_FLAG));

	dev_dbg(dev, "Link status: %d\n",

		ioread8(priv->mii_io + MII_LINK_STATUS));

}



static void ec_bhf_reset(struct ec_bhf_priv *priv)

{

	iowrite8(0, priv->mac_io + MAC_FRAME_ERR_CNT);
@@ -210,8 +182,6 @@ static void ec_bhf_send_packet(struct ec_bhf_priv *priv, struct tx_desc *desc) 
	u32 addr = (u8 *)desc - priv->tx_buf.buf;



	iowrite32((ALIGN(len, 8) << 24) | addr, priv->fifo_io + FIFO_TX_REG);



	dev_dbg(PRIV_TO_DEV(priv), "Done sending packet\n");

}



static int ec_bhf_desc_sent(struct tx_desc *desc)
@@ -244,7 +214,6 @@ static void ec_bhf_add_rx_desc(struct ec_bhf_priv *priv, struct rx_desc *desc) 
static void ec_bhf_process_rx(struct ec_bhf_priv *priv)

{

	struct rx_desc *desc = &priv->rx_descs[priv->rx_dnext];

	struct device *dev = PRIV_TO_DEV(priv);



	while (ec_bhf_pkt_received(desc)) {

		int pkt_size = (le16_to_cpu(desc->header.len) &
@@ -253,18 +222,14 @@ static void ec_bhf_process_rx(struct ec_bhf_priv *priv) 
		struct sk_buff *skb;



		skb = netdev_alloc_skb_ip_align(priv->net_dev, pkt_size);

		dev_dbg(dev, "Received packet, size: %d\n", pkt_size);



		if (skb) {

			memcpy(skb_put(skb, pkt_size), data, pkt_size);

			skb->protocol = eth_type_trans(skb, priv->net_dev);

			dev_dbg(dev, "Protocol type: %x\n", skb->protocol);



			priv->stat_rx_bytes += pkt_size;



			netif_rx(skb);

		} else {

			dev_err_ratelimited(dev,

			dev_err_ratelimited(PRIV_TO_DEV(priv),

					    "Couldn't allocate a skb_buff for a packet of size %u\n",

					    pkt_size);

		}
@@ -276,7 +241,6 @@ static void ec_bhf_process_rx(struct ec_bhf_priv *priv) 
		priv->rx_dnext = (priv->rx_dnext + 1) % priv->rx_dcount;

		desc = &priv->rx_descs[priv->rx_dnext];

	}



}



static enum hrtimer_restart ec_bhf_timer_fun(struct hrtimer *timer)
@@ -299,14 +263,7 @@ static int ec_bhf_setup_offsets(struct ec_bhf_priv *priv) 
	unsigned block_count, i;

	void __iomem *ec_info;



	dev_dbg(dev, "Info block:\n");

	dev_dbg(dev, "Type of function: %x\n", (unsigned)ioread16(priv->io));

	dev_dbg(dev, "Revision of function: %x\n",

		(unsigned)ioread16(priv->io + INFO_BLOCK_REV));



	block_count = ioread8(priv->io + INFO_BLOCK_BLK_CNT);

	dev_dbg(dev, "Number of function blocks: %x\n", block_count);



	for (i = 0; i < block_count; i++) {

		u16 type = ioread16(priv->io + i * INFO_BLOCK_SIZE +

				    INFO_BLOCK_TYPE);
@@ -317,29 +274,17 @@ static int ec_bhf_setup_offsets(struct ec_bhf_priv *priv) 
		dev_err(dev, "EtherCAT master with DMA block not found\n");

		return -ENODEV;

	}

	dev_dbg(dev, "EtherCAT master with DMA block found at pos: %d\n", i);



	ec_info = priv->io + i * INFO_BLOCK_SIZE;

	dev_dbg(dev, "EtherCAT master revision: %d\n",

		ioread16(ec_info + INFO_BLOCK_REV));



	priv->tx_dma_chan = ioread8(ec_info + INFO_BLOCK_TX_CHAN);

	dev_dbg(dev, "EtherCAT master tx dma channel: %d\n",

		priv->tx_dma_chan);



	priv->rx_dma_chan = ioread8(ec_info + INFO_BLOCK_RX_CHAN);

	dev_dbg(dev, "EtherCAT master rx dma channel: %d\n",

		 priv->rx_dma_chan);



	priv->ec_io = priv->io + ioread32(ec_info + INFO_BLOCK_OFFSET);

	priv->mii_io = priv->ec_io + ioread32(priv->ec_io + EC_MII_OFFSET);

	priv->fifo_io = priv->ec_io + ioread32(priv->ec_io + EC_FIFO_OFFSET);

	priv->mac_io = priv->ec_io + ioread32(priv->ec_io + EC_MAC_OFFSET);



	dev_dbg(dev,

		"EtherCAT block addres: %p, fifo address: %p, mii address: %p, mac address: %p\n",

		priv->ec_io, priv->fifo_io, priv->mii_io, priv->mac_io);



	return 0;

}
@@ -350,8 +295,6 @@ static netdev_tx_t ec_bhf_start_xmit(struct sk_buff *skb, 
	struct tx_desc *desc;

	unsigned len;



	dev_dbg(PRIV_TO_DEV(priv), "Starting xmit\n");



	desc = &priv->tx_descs[priv->tx_dnext];



	skb_copy_and_csum_dev(skb, desc->data);
@@ -366,15 +309,12 @@ static netdev_tx_t ec_bhf_start_xmit(struct sk_buff *skb, 
	priv->tx_dnext = (priv->tx_dnext + 1) % priv->tx_dcount;



	if (!ec_bhf_desc_sent(&priv->tx_descs[priv->tx_dnext])) {

		/* Make sure that update updates to tx_dnext are perceived

		/* Make sure that updates to tx_dnext are perceived

		 * by timer routine.

		 */

		smp_wmb();



		netif_stop_queue(net_dev);



		dev_dbg(PRIV_TO_DEV(priv), "Stopping netif queue\n");

		ec_bhf_print_status(priv);

	}



	priv->stat_tx_bytes += len;
@@ -397,7 +337,6 @@ static int ec_bhf_alloc_dma_mem(struct ec_bhf_priv *priv, 


	mask = ioread32(priv->dma_io + offset);

	mask &= DMA_WINDOW_SIZE_MASK;

	dev_dbg(dev, "Read mask %x for channel %d\n", mask, channel);



	/* We want to allocate a chunk of memory that is:

	 * - aligned to the mask we just read
@@ -408,12 +347,10 @@ static int ec_bhf_alloc_dma_mem(struct ec_bhf_priv *priv, 
	buf->len = min_t(int, ~mask + 1, size);

	buf->alloc_len = 2 * buf->len;



	dev_dbg(dev, "Allocating %d bytes for channel %d",

		(int)buf->alloc_len, channel);

	buf->alloc = dma_alloc_coherent(dev, buf->alloc_len, &buf->alloc_phys,

					GFP_KERNEL);

	if (buf->alloc == NULL) {

		dev_info(dev, "Failed to allocate buffer\n");

		dev_err(dev, "Failed to allocate buffer\n");

		return -ENOMEM;

	}
@@ -422,8 +359,6 @@ static int ec_bhf_alloc_dma_mem(struct ec_bhf_priv *priv, 


	iowrite32(0, priv->dma_io + offset + 4);

	iowrite32(buf->buf_phys, priv->dma_io + offset);

	dev_dbg(dev, "Buffer: %x and read from dev: %x",

		(unsigned)buf->buf_phys, ioread32(priv->dma_io + offset));



	return 0;

}
@@ -469,8 +404,6 @@ static int ec_bhf_open(struct net_device *net_dev) 
	struct device *dev = PRIV_TO_DEV(priv);

	int err = 0;



	dev_info(dev, "Opening device\n");



	ec_bhf_reset(priv);



	err = ec_bhf_alloc_dma_mem(priv, &priv->rx_buf, priv->rx_dma_chan,
@@ -481,20 +414,13 @@ static int ec_bhf_open(struct net_device *net_dev) 
	}

	ec_bhf_setup_rx_descs(priv);



	dev_info(dev, "RX buffer allocated, address: %x\n",

		 (unsigned)priv->rx_buf.buf_phys);



	err = ec_bhf_alloc_dma_mem(priv, &priv->tx_buf, priv->tx_dma_chan,

				   FIFO_SIZE * sizeof(struct tx_desc));

	if (err) {

		dev_err(dev, "Failed to allocate tx buffer\n");

		goto error_rx_free;

	}

	dev_dbg(dev, "TX buffer allocated, addres: %x\n",

		(unsigned)priv->tx_buf.buf_phys);



	iowrite8(0, priv->mii_io + MII_MAC_FILT_FLAG);



	ec_bhf_setup_tx_descs(priv);



	netif_start_queue(net_dev);
@@ -504,10 +430,6 @@ static int ec_bhf_open(struct net_device *net_dev) 
	hrtimer_start(&priv->hrtimer, ktime_set(0, polling_frequency),

		      HRTIMER_MODE_REL);



	dev_info(PRIV_TO_DEV(priv), "Device open\n");



	ec_bhf_print_status(priv);



	return 0;



error_rx_free:
@@ -640,9 +562,6 @@ static int ec_bhf_probe(struct pci_dev *dev, const struct pci_device_id *id) 


	memcpy_fromio(net_dev->dev_addr, priv->mii_io + MII_MAC_ADDR, 6);



	dev_dbg(&dev->dev, "CX5020 Ethercat master address: %pM\n",

		net_dev->dev_addr);



	err = register_netdev(net_dev);

	if (err < 0)

		goto err_free_net_dev;