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gianfar: Add per queue structure support

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This patch introduces per tx and per rx queue structures.
Earlier the members of these structures were inside the
gfar_private structure.

Moving forward if we want to support multiple queues, we need
to refactor the gfar_private structure so that introduction of
multiple queues is easier.

Signed-off-by: Sandeep Gopalpet <Sandeep.Kumar@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Sandeep Gopalpet 2009-11-02 07:03:00 +00:00 committed by David S. Miller
parent 123b43e971
commit a12f801d4b
4 changed files with 398 additions and 245 deletions
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384
drivers/net/gianfar.c
View file

@ -8,9 +8,10 @@
*
* Author: Andy Fleming
* Maintainer: Kumar Gala
* Modifier: Sandeep Gopalpet <sandeep.kumar@freescale.com>
*
* Copyright (c) 2002-2006 Freescale Semiconductor, Inc.
* Copyright (c) 2007 MontaVista Software, Inc.
* Copyright 2002-2009 Freescale Semiconductor, Inc.
* Copyright 2007 MontaVista Software, Inc.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
@ -109,7 +110,7 @@ static void gfar_reset_task(struct work_struct *work);
static void gfar_timeout(struct net_device *dev);
static int gfar_close(struct net_device *dev);
struct sk_buff *gfar_new_skb(struct net_device *dev);
static void gfar_new_rxbdp(struct net_device *dev, struct rxbd8 *bdp,
static void gfar_new_rxbdp(struct gfar_priv_rx_q *rx_queue, struct rxbd8 *bdp,
struct sk_buff *skb);
static int gfar_set_mac_address(struct net_device *dev);
static int gfar_change_mtu(struct net_device *dev, int new_mtu);
@ -130,8 +131,8 @@ static int gfar_poll(struct napi_struct *napi, int budget);
#ifdef CONFIG_NET_POLL_CONTROLLER
static void gfar_netpoll(struct net_device *dev);
#endif
int gfar_clean_rx_ring(struct net_device *dev, int rx_work_limit);
static int gfar_clean_tx_ring(struct net_device *dev);
int gfar_clean_rx_ring(struct gfar_priv_rx_q *rx_queue, int rx_work_limit);
static int gfar_clean_tx_ring(struct gfar_priv_tx_q *tx_queue);
static int gfar_process_frame(struct net_device *dev, struct sk_buff *skb,
int amount_pull);
static void gfar_vlan_rx_register(struct net_device *netdev,
@ -147,16 +148,16 @@ MODULE_AUTHOR("Freescale Semiconductor, Inc");
MODULE_DESCRIPTION("Gianfar Ethernet Driver");
MODULE_LICENSE("GPL");
static void gfar_init_rxbdp(struct net_device *dev, struct rxbd8 *bdp,
static void gfar_init_rxbdp(struct gfar_priv_rx_q *rx_queue, struct rxbd8 *bdp,
dma_addr_t buf)
{
struct gfar_private *priv = netdev_priv(dev);
struct net_device *dev = rx_queue->dev;
u32 lstatus;
bdp->bufPtr = buf;
lstatus = BD_LFLAG(RXBD_EMPTY | RXBD_INTERRUPT);
if (bdp == priv->rx_bd_base + priv->rx_ring_size - 1)
if (bdp == rx_queue->rx_bd_base + rx_queue->rx_ring_size - 1)
lstatus |= BD_LFLAG(RXBD_WRAP);
eieio();
@ -167,20 +168,25 @@ static void gfar_init_rxbdp(struct net_device *dev, struct rxbd8 *bdp,
static int gfar_init_bds(struct net_device *ndev)
{
struct gfar_private *priv = netdev_priv(ndev);
struct gfar_priv_tx_q *tx_queue = NULL;
struct gfar_priv_rx_q *rx_queue = NULL;
struct txbd8 *txbdp;
struct rxbd8 *rxbdp;
int i;
tx_queue = priv->tx_queue;
rx_queue = priv->rx_queue;
/* Initialize some variables in our dev structure */
priv->num_txbdfree = priv->tx_ring_size;
priv->dirty_tx = priv->cur_tx = priv->tx_bd_base;
priv->cur_rx = priv->rx_bd_base;
priv->skb_curtx = priv->skb_dirtytx = 0;
priv->skb_currx = 0;
tx_queue->num_txbdfree = tx_queue->tx_ring_size;
tx_queue->dirty_tx = tx_queue->cur_tx = tx_queue->tx_bd_base;
rx_queue->cur_rx = rx_queue->rx_bd_base;
tx_queue->skb_curtx = tx_queue->skb_dirtytx = 0;
rx_queue->skb_currx = 0;
/* Initialize Transmit Descriptor Ring */
txbdp = priv->tx_bd_base;
for (i = 0; i < priv->tx_ring_size; i++) {
txbdp = tx_queue->tx_bd_base;
for (i = 0; i < tx_queue->tx_ring_size; i++) {
txbdp->lstatus = 0;
txbdp->bufPtr = 0;
txbdp++;
@ -190,12 +196,12 @@ static int gfar_init_bds(struct net_device *ndev)
txbdp--;
txbdp->status |= TXBD_WRAP;
rxbdp = priv->rx_bd_base;
for (i = 0; i < priv->rx_ring_size; i++) {
struct sk_buff *skb = priv->rx_skbuff[i];
rxbdp = rx_queue->rx_bd_base;
for (i = 0; i < rx_queue->rx_ring_size; i++) {
struct sk_buff *skb = rx_queue->rx_skbuff[i];
if (skb) {
gfar_init_rxbdp(ndev, rxbdp, rxbdp->bufPtr);
gfar_init_rxbdp(rx_queue, rxbdp, rxbdp->bufPtr);
} else {
skb = gfar_new_skb(ndev);
if (!skb) {
@ -203,9 +209,9 @@ static int gfar_init_bds(struct net_device *ndev)
ndev->name);
return -ENOMEM;
}
priv->rx_skbuff[i] = skb;
rx_queue->rx_skbuff[i] = skb;
gfar_new_rxbdp(ndev, rxbdp, skb);
gfar_new_rxbdp(rx_queue, rxbdp, skb);
}
rxbdp++;
@ -220,12 +226,17 @@ static int gfar_alloc_skb_resources(struct net_device *ndev)
int i;
struct gfar_private *priv = netdev_priv(ndev);
struct device *dev = &priv->ofdev->dev;
struct gfar_priv_tx_q *tx_queue = NULL;
struct gfar_priv_rx_q *rx_queue = NULL;
tx_queue = priv->tx_queue;
rx_queue = priv->rx_queue;
/* Allocate memory for the buffer descriptors */
vaddr = dma_alloc_coherent(dev,
sizeof(*priv->tx_bd_base) * priv->tx_ring_size +
sizeof(*priv->rx_bd_base) * priv->rx_ring_size,
&priv->tx_bd_dma_base, GFP_KERNEL);
sizeof(*tx_queue->tx_bd_base) * tx_queue->tx_ring_size +
sizeof(*rx_queue->rx_bd_base) * rx_queue->rx_ring_size,
&tx_queue->tx_bd_dma_base, GFP_KERNEL);
if (!vaddr) {
if (netif_msg_ifup(priv))
pr_err("%s: Could not allocate buffer descriptors!\n",
@ -233,36 +244,38 @@ static int gfar_alloc_skb_resources(struct net_device *ndev)
return -ENOMEM;
}
priv->tx_bd_base = vaddr;
tx_queue->tx_bd_base = vaddr;
tx_queue->dev = ndev;
/* Start the rx descriptor ring where the tx ring leaves off */
vaddr = vaddr + sizeof(*priv->tx_bd_base) * priv->tx_ring_size;
priv->rx_bd_base = vaddr;
vaddr = vaddr + sizeof(*tx_queue->tx_bd_base) * tx_queue->tx_ring_size;
rx_queue->rx_bd_base = vaddr;
rx_queue->dev = ndev;
/* Setup the skbuff rings */
priv->tx_skbuff = kmalloc(sizeof(*priv->tx_skbuff) *
priv->tx_ring_size, GFP_KERNEL);
if (!priv->tx_skbuff) {
tx_queue->tx_skbuff = kmalloc(sizeof(*tx_queue->tx_skbuff) *
tx_queue->tx_ring_size, GFP_KERNEL);
if (!tx_queue->tx_skbuff) {
if (netif_msg_ifup(priv))
pr_err("%s: Could not allocate tx_skbuff\n",
ndev->name);
goto cleanup;
}
for (i = 0; i < priv->tx_ring_size; i++)
priv->tx_skbuff[i] = NULL;
for (i = 0; i < tx_queue->tx_ring_size; i++)
tx_queue->tx_skbuff[i] = NULL;
priv->rx_skbuff = kmalloc(sizeof(*priv->rx_skbuff) *
priv->rx_ring_size, GFP_KERNEL);
if (!priv->rx_skbuff) {
rx_queue->rx_skbuff = kmalloc(sizeof(*rx_queue->rx_skbuff) *
rx_queue->rx_ring_size, GFP_KERNEL);
if (!rx_queue->rx_skbuff) {
if (netif_msg_ifup(priv))
pr_err("%s: Could not allocate rx_skbuff\n",
ndev->name);
goto cleanup;
}
for (i = 0; i < priv->rx_ring_size; i++)
priv->rx_skbuff[i] = NULL;
for (i = 0; i < rx_queue->rx_ring_size; i++)
rx_queue->rx_skbuff[i] = NULL;
if (gfar_init_bds(ndev))
goto cleanup;
@ -278,24 +291,29 @@ static void gfar_init_mac(struct net_device *ndev)
{
struct gfar_private *priv = netdev_priv(ndev);
struct gfar __iomem *regs = priv->regs;
struct gfar_priv_tx_q *tx_queue = NULL;
struct gfar_priv_rx_q *rx_queue = NULL;
u32 rctrl = 0;
u32 tctrl = 0;
u32 attrs = 0;
tx_queue = priv->tx_queue;
rx_queue = priv->rx_queue;
/* enet DMA only understands physical addresses */
gfar_write(&regs->tbase0, priv->tx_bd_dma_base);
gfar_write(&regs->rbase0, priv->tx_bd_dma_base +
sizeof(*priv->tx_bd_base) *
priv->tx_ring_size);
gfar_write(&regs->tbase0, tx_queue->tx_bd_dma_base);
gfar_write(&regs->rbase0, tx_queue->tx_bd_dma_base +
sizeof(*tx_queue->tx_bd_base) *
tx_queue->tx_ring_size);
/* Configure the coalescing support */
gfar_write(&regs->txic, 0);
if (priv->txcoalescing)
gfar_write(&regs->txic, priv->txic);
if (tx_queue->txcoalescing)
gfar_write(&regs->txic, tx_queue->txic);
gfar_write(&regs->rxic, 0);
if (priv->rxcoalescing)
gfar_write(&regs->rxic, priv->rxic);
if (rx_queue->rxcoalescing)
gfar_write(&regs->rxic, rx_queue->rxic);
if (priv->rx_csum_enable)
rctrl |= RCTRL_CHECKSUMMING;
@ -414,7 +432,7 @@ static int gfar_of_init(struct net_device *dev)
stash = of_get_property(np, "bd-stash", NULL);
if(stash) {
if (stash) {
priv->device_flags |= FSL_GIANFAR_DEV_HAS_BD_STASHING;
priv->bd_stash_en = 1;
}
@ -519,8 +537,18 @@ static int gfar_probe(struct of_device *ofdev,
if (err)
goto regs_fail;
spin_lock_init(&priv->txlock);
spin_lock_init(&priv->rxlock);
priv->tx_queue = (struct gfar_priv_tx_q *)kmalloc(
sizeof (struct gfar_priv_tx_q), GFP_KERNEL);
if (!priv->tx_queue)
goto regs_fail;
priv->rx_queue = (struct gfar_priv_rx_q *)kmalloc(
sizeof (struct gfar_priv_rx_q), GFP_KERNEL);
if (!priv->rx_queue)
goto rx_queue_fail;
spin_lock_init(&priv->tx_queue->txlock);
spin_lock_init(&priv->rx_queue->rxlock);
spin_lock_init(&priv->bflock);
INIT_WORK(&priv->reset_task, gfar_reset_task);
@ -552,12 +580,13 @@ static int gfar_probe(struct of_device *ofdev,
/* Fill in the dev structure */
dev->watchdog_timeo = TX_TIMEOUT;
netif_napi_add(dev, &priv->napi, gfar_poll, GFAR_DEV_WEIGHT);
dev->mtu = 1500;
dev->netdev_ops = &gfar_netdev_ops;
dev->ethtool_ops = &gfar_ethtool_ops;
/* Register for napi ...NAPI is for each rx_queue */
netif_napi_add(dev, &priv->rx_queue->napi, gfar_poll, GFAR_DEV_WEIGHT);
if (priv->device_flags & FSL_GIANFAR_DEV_HAS_CSUM) {
priv->rx_csum_enable = 1;
dev->features |= NETIF_F_IP_CSUM | NETIF_F_SG | NETIF_F_HIGHDMA;
@ -613,14 +642,16 @@ static int gfar_probe(struct of_device *ofdev,
dev->hard_header_len += GMAC_FCB_LEN;
priv->rx_buffer_size = DEFAULT_RX_BUFFER_SIZE;
priv->tx_ring_size = DEFAULT_TX_RING_SIZE;
priv->rx_ring_size = DEFAULT_RX_RING_SIZE;
priv->num_txbdfree = DEFAULT_TX_RING_SIZE;
priv->txcoalescing = DEFAULT_TX_COALESCE;
priv->txic = DEFAULT_TXIC;
priv->rxcoalescing = DEFAULT_RX_COALESCE;
priv->rxic = DEFAULT_RXIC;
/* Initializing some of the rx/tx queue level parameters */
priv->tx_queue->tx_ring_size = DEFAULT_TX_RING_SIZE;
priv->tx_queue->num_txbdfree = DEFAULT_TX_RING_SIZE;
priv->tx_queue->txcoalescing = DEFAULT_TX_COALESCE;
priv->tx_queue->txic = DEFAULT_TXIC;
priv->rx_queue->rx_ring_size = DEFAULT_RX_RING_SIZE;
priv->rx_queue->rxcoalescing = DEFAULT_RX_COALESCE;
priv->rx_queue->rxic = DEFAULT_RXIC;
/* Enable most messages by default */
priv->msg_enable = (NETIF_MSG_IFUP << 1 ) - 1;
@ -666,12 +697,15 @@ static int gfar_probe(struct of_device *ofdev,
/* provided which set of benchmarks. */
printk(KERN_INFO "%s: Running with NAPI enabled\n", dev->name);
printk(KERN_INFO "%s: %d/%d RX/TX BD ring size\n",
dev->name, priv->rx_ring_size, priv->tx_ring_size);
dev->name, priv->rx_queue->rx_ring_size, priv->tx_queue->tx_ring_size);
return 0;
register_fail:
iounmap(priv->regs);
kfree(priv->rx_queue);
rx_queue_fail:
kfree(priv->tx_queue);
regs_fail:
if (priv->phy_node)
of_node_put(priv->phy_node);
@ -705,6 +739,8 @@ static int gfar_suspend(struct device *dev)
{
struct gfar_private *priv = dev_get_drvdata(dev);
struct net_device *ndev = priv->ndev;
struct gfar_priv_tx_q *tx_queue = NULL;
struct gfar_priv_rx_q *rx_queue = NULL;
unsigned long flags;
u32 tempval;
@ -712,10 +748,12 @@ static int gfar_suspend(struct device *dev)
(priv->device_flags & FSL_GIANFAR_DEV_HAS_MAGIC_PACKET);
netif_device_detach(ndev);
tx_queue = priv->tx_queue;
rx_queue = priv->rx_queue;
if (netif_running(ndev)) {
spin_lock_irqsave(&priv->txlock, flags);
spin_lock(&priv->rxlock);
spin_lock_irqsave(&tx_queue->txlock, flags);
spin_lock(&rx_queue->rxlock);
gfar_halt_nodisable(ndev);
@ -729,10 +767,10 @@ static int gfar_suspend(struct device *dev)
gfar_write(&priv->regs->maccfg1, tempval);
spin_unlock(&priv->rxlock);
spin_unlock_irqrestore(&priv->txlock, flags);
spin_unlock(&rx_queue->rxlock);
spin_unlock_irqrestore(&tx_queue->txlock, flags);
napi_disable(&priv->napi);
napi_disable(&rx_queue->napi);
if (magic_packet) {
/* Enable interrupt on Magic Packet */
@ -754,6 +792,8 @@ static int gfar_resume(struct device *dev)
{
struct gfar_private *priv = dev_get_drvdata(dev);
struct net_device *ndev = priv->ndev;
struct gfar_priv_tx_q *tx_queue = NULL;
struct gfar_priv_rx_q *rx_queue = NULL;
unsigned long flags;
u32 tempval;
int magic_packet = priv->wol_en &&
@ -770,9 +810,11 @@ static int gfar_resume(struct device *dev)
/* Disable Magic Packet mode, in case something
* else woke us up.
*/
rx_queue = priv->rx_queue;
tx_queue = priv->tx_queue;
spin_lock_irqsave(&priv->txlock, flags);
spin_lock(&priv->rxlock);
spin_lock_irqsave(&tx_queue->txlock, flags);
spin_lock(&rx_queue->rxlock);
tempval = gfar_read(&priv->regs->maccfg2);
tempval &= ~MACCFG2_MPEN;
@ -780,12 +822,12 @@ static int gfar_resume(struct device *dev)
gfar_start(ndev);
spin_unlock(&priv->rxlock);
spin_unlock_irqrestore(&priv->txlock, flags);
spin_unlock(&rx_queue->rxlock);
spin_unlock_irqrestore(&tx_queue->txlock, flags);
netif_device_attach(ndev);
napi_enable(&priv->napi);
napi_enable(&rx_queue->napi);
return 0;
}
@ -1060,18 +1102,23 @@ void gfar_halt(struct net_device *dev)
void stop_gfar(struct net_device *dev)
{
struct gfar_private *priv = netdev_priv(dev);
struct gfar_priv_tx_q *tx_queue = NULL;
struct gfar_priv_rx_q *rx_queue = NULL;
unsigned long flags;
phy_stop(priv->phydev);
tx_queue = priv->tx_queue;
rx_queue = priv->rx_queue;
/* Lock it down */
spin_lock_irqsave(&priv->txlock, flags);
spin_lock(&priv->rxlock);
spin_lock_irqsave(&tx_queue->txlock, flags);
spin_lock(&rx_queue->rxlock);
gfar_halt(dev);
spin_unlock(&priv->rxlock);
spin_unlock_irqrestore(&priv->txlock, flags);
spin_unlock(&rx_queue->rxlock);
spin_unlock_irqrestore(&tx_queue->txlock, flags);
/* Free the IRQs */
if (priv->device_flags & FSL_GIANFAR_DEV_HAS_MULTI_INTR) {
@ -1092,46 +1139,50 @@ static void free_skb_resources(struct gfar_private *priv)
struct device *dev = &priv->ofdev->dev;
struct rxbd8 *rxbdp;
struct txbd8 *txbdp;
struct gfar_priv_tx_q *tx_queue = NULL;
struct gfar_priv_rx_q *rx_queue = NULL;
int i, j;
/* Go through all the buffer descriptors and free their data buffers */
txbdp = priv->tx_bd_base;
tx_queue = priv->tx_queue;
txbdp = tx_queue->tx_bd_base;
if (!priv->tx_skbuff)
if (!tx_queue->tx_skbuff)
goto skip_tx_skbuff;
for (i = 0; i < priv->tx_ring_size; i++) {
if (!priv->tx_skbuff[i])
for (i = 0; i < tx_queue->tx_ring_size; i++) {
if (!tx_queue->tx_skbuff[i])
continue;
dma_unmap_single(&priv->ofdev->dev, txbdp->bufPtr,
txbdp->length, DMA_TO_DEVICE);
txbdp->lstatus = 0;
for (j = 0; j < skb_shinfo(priv->tx_skbuff[i])->nr_frags; j++) {
for (j = 0; j < skb_shinfo(tx_queue->tx_skbuff[i])->nr_frags; j++) {
txbdp++;
dma_unmap_page(&priv->ofdev->dev, txbdp->bufPtr,
txbdp->length, DMA_TO_DEVICE);
}
txbdp++;
dev_kfree_skb_any(priv->tx_skbuff[i]);
priv->tx_skbuff[i] = NULL;
dev_kfree_skb_any(tx_queue->tx_skbuff[i]);
tx_queue->tx_skbuff[i] = NULL;
}
kfree(priv->tx_skbuff);
kfree(tx_queue->tx_skbuff);
skip_tx_skbuff:
rxbdp = priv->rx_bd_base;
rx_queue = priv->rx_queue;
rxbdp = rx_queue->rx_bd_base;
if (!priv->rx_skbuff)
if (!rx_queue->rx_skbuff)
goto skip_rx_skbuff;
for (i = 0; i < priv->rx_ring_size; i++) {
if (priv->rx_skbuff[i]) {
for (i = 0; i < rx_queue->rx_ring_size; i++) {
if (rx_queue->rx_skbuff[i]) {
dma_unmap_single(&priv->ofdev->dev, rxbdp->bufPtr,
priv->rx_buffer_size,
DMA_FROM_DEVICE);
dev_kfree_skb_any(priv->rx_skbuff[i]);
priv->rx_skbuff[i] = NULL;
dev_kfree_skb_any(rx_queue->rx_skbuff[i]);
rx_queue->rx_skbuff[i] = NULL;
}
rxbdp->lstatus = 0;
@ -1139,17 +1190,19 @@ static void free_skb_resources(struct gfar_private *priv)
rxbdp++;
}
kfree(priv->rx_skbuff);
kfree(rx_queue->rx_skbuff);
skip_rx_skbuff:
dma_free_coherent(dev, sizeof(*txbdp) * priv->tx_ring_size +
sizeof(*rxbdp) * priv->rx_ring_size,
priv->tx_bd_base, priv->tx_bd_dma_base);
dma_free_coherent(dev, sizeof(*txbdp) * tx_queue->tx_ring_size +
sizeof(*rxbdp) * rx_queue->rx_ring_size,
tx_queue->tx_bd_base, tx_queue->tx_bd_dma_base);
}
void gfar_start(struct net_device *dev)
{
struct gfar_private *priv = netdev_priv(dev);
struct gfar_priv_tx_q *tx_queue;
struct gfar_priv_rx_q *rx_queue;
struct gfar __iomem *regs = priv->regs;
u32 tempval;
@ -1258,7 +1311,7 @@ static int gfar_enet_open(struct net_device *dev)
struct gfar_private *priv = netdev_priv(dev);
int err;
napi_enable(&priv->napi);
napi_enable(&priv->rx_queue->napi);
skb_queue_head_init(&priv->rx_recycle);
@ -1269,14 +1322,14 @@ static int gfar_enet_open(struct net_device *dev)
err = init_phy(dev);
if(err) {
napi_disable(&priv->napi);
if (err) {
napi_disable(&priv->rx_queue->napi);
return err;
}
err = startup_gfar(dev);
if (err) {
napi_disable(&priv->napi);
napi_disable(&priv->rx_queue->napi);
return err;
}
@ -1349,6 +1402,7 @@ static inline struct txbd8 *next_txbd(struct txbd8 *bdp, struct txbd8 *base,
static int gfar_start_xmit(struct sk_buff *skb, struct net_device *dev)
{
struct gfar_private *priv = netdev_priv(dev);
struct gfar_priv_tx_q *tx_queue = NULL;
struct txfcb *fcb = NULL;
struct txbd8 *txbdp, *txbdp_start, *base;
u32 lstatus;
@ -1357,7 +1411,8 @@ static int gfar_start_xmit(struct sk_buff *skb, struct net_device *dev)
unsigned long flags;
unsigned int nr_frags, length;
base = priv->tx_bd_base;
tx_queue = priv->tx_queue;
base = tx_queue->tx_bd_base;
/* make space for additional header when fcb is needed */
if (((skb->ip_summed == CHECKSUM_PARTIAL) ||
@ -1378,21 +1433,21 @@ static int gfar_start_xmit(struct sk_buff *skb, struct net_device *dev)
/* total number of fragments in the SKB */
nr_frags = skb_shinfo(skb)->nr_frags;
spin_lock_irqsave(&priv->txlock, flags);
spin_lock_irqsave(&tx_queue->txlock, flags);
/* check if there is space to queue this packet */
if ((nr_frags+1) > priv->num_txbdfree) {
if ((nr_frags+1) > tx_queue->num_txbdfree) {
/* no space, stop the queue */
netif_stop_queue(dev);
dev->stats.tx_fifo_errors++;
spin_unlock_irqrestore(&priv->txlock, flags);
spin_unlock_irqrestore(&tx_queue->txlock, flags);
return NETDEV_TX_BUSY;
}
/* Update transmit stats */
dev->stats.tx_bytes += skb->len;
txbdp = txbdp_start = priv->cur_tx;
txbdp = txbdp_start = tx_queue->cur_tx;
if (nr_frags == 0) {
lstatus = txbdp->lstatus | BD_LFLAG(TXBD_LAST | TXBD_INTERRUPT);
@ -1400,7 +1455,7 @@ static int gfar_start_xmit(struct sk_buff *skb, struct net_device *dev)
/* Place the fragment addresses and lengths into the TxBDs */
for (i = 0; i < nr_frags; i++) {
/* Point at the next BD, wrapping as needed */
txbdp = next_txbd(txbdp, base, priv->tx_ring_size);
txbdp = next_txbd(txbdp, base, tx_queue->tx_ring_size);
length = skb_shinfo(skb)->frags[i].size;
@ -1442,7 +1497,7 @@ static int gfar_start_xmit(struct sk_buff *skb, struct net_device *dev)
}
/* setup the TxBD length and buffer pointer for the first BD */
priv->tx_skbuff[priv->skb_curtx] = skb;
tx_queue->tx_skbuff[tx_queue->skb_curtx] = skb;
txbdp_start->bufPtr = dma_map_single(&priv->ofdev->dev, skb->data,
skb_headlen(skb), DMA_TO_DEVICE);
@ -1462,19 +1517,19 @@ static int gfar_start_xmit(struct sk_buff *skb, struct net_device *dev)
/* Update the current skb pointer to the next entry we will use
* (wrapping if necessary) */
priv->skb_curtx = (priv->skb_curtx + 1) &
TX_RING_MOD_MASK(priv->tx_ring_size);
tx_queue->skb_curtx = (tx_queue->skb_curtx + 1) &
TX_RING_MOD_MASK(tx_queue->tx_ring_size);
priv->cur_tx = next_txbd(txbdp, base, priv->tx_ring_size);
tx_queue->cur_tx = next_txbd(txbdp, base, tx_queue->tx_ring_size);
/* reduce TxBD free count */
priv->num_txbdfree -= (nr_frags + 1);
tx_queue->num_txbdfree -= (nr_frags + 1);
dev->trans_start = jiffies;
/* If the next BD still needs to be cleaned up, then the bds
are full. We need to tell the kernel to stop sending us stuff. */
if (!priv->num_txbdfree) {
if (!tx_queue->num_txbdfree) {
netif_stop_queue(dev);
dev->stats.tx_fifo_errors++;
@ -1484,7 +1539,7 @@ static int gfar_start_xmit(struct sk_buff *skb, struct net_device *dev)
gfar_write(&priv->regs->tstat, TSTAT_CLEAR_THALT);
/* Unlock priv */
spin_unlock_irqrestore(&priv->txlock, flags);
spin_unlock_irqrestore(&tx_queue->txlock, flags);
return NETDEV_TX_OK;
}
@ -1494,7 +1549,7 @@ static int gfar_close(struct net_device *dev)
{
struct gfar_private *priv = netdev_priv(dev);
napi_disable(&priv->napi);
napi_disable(&priv->rx_queue->napi);
skb_queue_purge(&priv->rx_recycle);
cancel_work_sync(&priv->reset_task);
@ -1523,10 +1578,12 @@ static void gfar_vlan_rx_register(struct net_device *dev,
struct vlan_group *grp)
{
struct gfar_private *priv = netdev_priv(dev);
struct gfar_priv_rx_q *rx_queue = NULL;
unsigned long flags;
u32 tempval;
spin_lock_irqsave(&priv->rxlock, flags);
rx_queue = priv->rx_queue;
spin_lock_irqsave(&rx_queue->rxlock, flags);
priv->vlgrp = grp;
@ -1560,7 +1617,7 @@ static void gfar_vlan_rx_register(struct net_device *dev,
gfar_change_mtu(dev, dev->mtu);
spin_unlock_irqrestore(&priv->rxlock, flags);
spin_unlock_irqrestore(&rx_queue->rxlock, flags);
}
static int gfar_change_mtu(struct net_device *dev, int new_mtu)
@ -1649,24 +1706,27 @@ static void gfar_timeout(struct net_device *dev)
}
/* Interrupt Handler for Transmit complete */
static int gfar_clean_tx_ring(struct net_device *dev)
static int gfar_clean_tx_ring(struct gfar_priv_tx_q *tx_queue)
{
struct net_device *dev = tx_queue->dev;
struct gfar_private *priv = netdev_priv(dev);
struct gfar_priv_rx_q *rx_queue = NULL;
struct txbd8 *bdp;
struct txbd8 *lbdp = NULL;
struct txbd8 *base = priv->tx_bd_base;
struct txbd8 *base = tx_queue->tx_bd_base;
struct sk_buff *skb;
int skb_dirtytx;
int tx_ring_size = priv->tx_ring_size;
int tx_ring_size = tx_queue->tx_ring_size;
int frags = 0;
int i;
int howmany = 0;
u32 lstatus;
bdp = priv->dirty_tx;
skb_dirtytx = priv->skb_dirtytx;
rx_queue = priv->rx_queue;
bdp = tx_queue->dirty_tx;
skb_dirtytx = tx_queue->skb_dirtytx;
while ((skb = priv->tx_skbuff[skb_dirtytx])) {
while ((skb = tx_queue->tx_skbuff[skb_dirtytx])) {
frags = skb_shinfo(skb)->nr_frags;
lbdp = skip_txbd(bdp, frags, base, tx_ring_size);
@ -1698,29 +1758,29 @@ static int gfar_clean_tx_ring(struct net_device *dev)
* If there's room in the queue (limit it to rx_buffer_size)
* we add this skb back into the pool, if it's the right size
*/
if (skb_queue_len(&priv->rx_recycle) < priv->rx_ring_size &&
if (skb_queue_len(&priv->rx_recycle) < rx_queue->rx_ring_size &&
skb_recycle_check(skb, priv->rx_buffer_size +
RXBUF_ALIGNMENT))
__skb_queue_head(&priv->rx_recycle, skb);
else
dev_kfree_skb_any(skb);
priv->tx_skbuff[skb_dirtytx] = NULL;
tx_queue->tx_skbuff[skb_dirtytx] = NULL;
skb_dirtytx = (skb_dirtytx + 1) &
TX_RING_MOD_MASK(tx_ring_size);
howmany++;
priv->num_txbdfree += frags + 1;
tx_queue->num_txbdfree += frags + 1;
}
/* If we freed a buffer, we can restart transmission, if necessary */
if (netif_queue_stopped(dev) && priv->num_txbdfree)
if (netif_queue_stopped(dev) && tx_queue->num_txbdfree)
netif_wake_queue(dev);
/* Update dirty indicators */
priv->skb_dirtytx = skb_dirtytx;
priv->dirty_tx = bdp;
tx_queue->skb_dirtytx = skb_dirtytx;
tx_queue->dirty_tx = bdp;
dev->stats.tx_packets += howmany;
@ -1730,14 +1790,18 @@ static int gfar_clean_tx_ring(struct net_device *dev)
static void gfar_schedule_cleanup(struct net_device *dev)
{
struct gfar_private *priv = netdev_priv(dev);
struct gfar_priv_tx_q *tx_queue = NULL;
struct gfar_priv_rx_q *rx_queue = NULL;
unsigned long flags;
spin_lock_irqsave(&priv->txlock, flags);
spin_lock(&priv->rxlock);
rx_queue = priv->rx_queue;
tx_queue = priv->tx_queue;
spin_lock_irqsave(&tx_queue->txlock, flags);
spin_lock(&rx_queue->rxlock);
if (napi_schedule_prep(&priv->napi)) {
if (napi_schedule_prep(&rx_queue->napi)) {
gfar_write(&priv->regs->imask, IMASK_RTX_DISABLED);
__napi_schedule(&priv->napi);
__napi_schedule(&rx_queue->napi);
} else {
/*
* Clear IEVENT, so interrupts aren't called again
@ -1746,8 +1810,8 @@ static void gfar_schedule_cleanup(struct net_device *dev)
gfar_write(&priv->regs->ievent, IEVENT_RTX_MASK);
}
spin_unlock(&priv->rxlock);
spin_unlock_irqrestore(&priv->txlock, flags);
spin_unlock(&rx_queue->rxlock);
spin_unlock_irqrestore(&tx_queue->txlock, flags);
}
/* Interrupt Handler for Transmit complete */
@ -1757,15 +1821,16 @@ static irqreturn_t gfar_transmit(int irq, void *dev_id)
return IRQ_HANDLED;
}
static void gfar_new_rxbdp(struct net_device *dev, struct rxbd8 *bdp,
static void gfar_new_rxbdp(struct gfar_priv_rx_q *rx_queue, struct rxbd8 *bdp,
struct sk_buff *skb)
{
struct net_device *dev = rx_queue->dev;
struct gfar_private *priv = netdev_priv(dev);
dma_addr_t buf;
buf = dma_map_single(&priv->ofdev->dev, skb->data,
priv->rx_buffer_size, DMA_FROM_DEVICE);
gfar_init_rxbdp(dev, bdp, buf);
gfar_init_rxbdp(rx_queue, bdp, buf);
}
@ -1890,8 +1955,9 @@ static int gfar_process_frame(struct net_device *dev, struct sk_buff *skb,
* until the budget/quota has been reached. Returns the number
* of frames handled
*/
int gfar_clean_rx_ring(struct net_device *dev, int rx_work_limit)
int gfar_clean_rx_ring(struct gfar_priv_rx_q *rx_queue, int rx_work_limit)
{
struct net_device *dev = rx_queue->dev;
struct rxbd8 *bdp, *base;
struct sk_buff *skb;
int pkt_len;
@ -1900,8 +1966,8 @@ int gfar_clean_rx_ring(struct net_device *dev, int rx_work_limit)
struct gfar_private *priv = netdev_priv(dev);
/* Get the first full descriptor */
bdp = priv->cur_rx;
base = priv->rx_bd_base;
bdp = rx_queue->cur_rx;
base = rx_queue->rx_bd_base;
amount_pull = (gfar_uses_fcb(priv) ? GMAC_FCB_LEN : 0) +
priv->padding;
@ -1913,7 +1979,7 @@ int gfar_clean_rx_ring(struct net_device *dev, int rx_work_limit)
/* Add another skb for the future */
newskb = gfar_new_skb(dev);
skb = priv->rx_skbuff[priv->skb_currx];
skb = rx_queue->rx_skbuff[rx_queue->skb_currx];
dma_unmap_single(&priv->ofdev->dev, bdp->bufPtr,
priv->rx_buffer_size, DMA_FROM_DEVICE);
@ -1961,30 +2027,33 @@ int gfar_clean_rx_ring(struct net_device *dev, int rx_work_limit)
}
priv->rx_skbuff[priv->skb_currx] = newskb;
rx_queue->rx_skbuff[rx_queue->skb_currx] = newskb;
/* Setup the new bdp */
gfar_new_rxbdp(dev, bdp, newskb);
gfar_new_rxbdp(rx_queue, bdp, newskb);
/* Update to the next pointer */
bdp = next_bd(bdp, base, priv->rx_ring_size);
bdp = next_bd(bdp, base, rx_queue->rx_ring_size);
/* update to point at the next skb */
priv->skb_currx =
(priv->skb_currx + 1) &
RX_RING_MOD_MASK(priv->rx_ring_size);
rx_queue->skb_currx =
(rx_queue->skb_currx + 1) &
RX_RING_MOD_MASK(rx_queue->rx_ring_size);
}
/* Update the current rxbd pointer to be the next one */
priv->cur_rx = bdp;
rx_queue->cur_rx = bdp;
return howmany;
}
static int gfar_poll(struct napi_struct *napi, int budget)
{
struct gfar_private *priv = container_of(napi, struct gfar_private, napi);
struct net_device *dev = priv->ndev;
struct gfar_priv_rx_q *rx_queue = container_of(napi,
struct gfar_priv_rx_q, napi);
struct net_device *dev = rx_queue->dev;
struct gfar_private *priv = netdev_priv(dev);
struct gfar_priv_tx_q *tx_queue = NULL;
int tx_cleaned = 0;
int rx_cleaned = 0;
unsigned long flags;
@ -1992,14 +2061,15 @@ static int gfar_poll(struct napi_struct *napi, int budget)
/* Clear IEVENT, so interrupts aren't called again
* because of the packets that have already arrived */
gfar_write(&priv->regs->ievent, IEVENT_RTX_MASK);
tx_queue = priv->tx_queue;
/* If we fail to get the lock, don't bother with the TX BDs */
if (spin_trylock_irqsave(&priv->txlock, flags)) {
tx_cleaned = gfar_clean_tx_ring(dev);
spin_unlock_irqrestore(&priv->txlock, flags);
if (spin_trylock_irqsave(&tx_queue->txlock, flags)) {
tx_cleaned = gfar_clean_tx_ring(tx_queue);
spin_unlock_irqrestore(&tx_queue->txlock, flags);
}
rx_cleaned = gfar_clean_rx_ring(dev, budget);
rx_cleaned = gfar_clean_rx_ring(rx_queue, budget);
if (tx_cleaned)
return budget;
@ -2014,13 +2084,13 @@ static int gfar_poll(struct napi_struct *napi, int budget)
/* If we are coalescing interrupts, update the timer */
/* Otherwise, clear it */
if (likely(priv->rxcoalescing)) {
if (likely(rx_queue->rxcoalescing)) {
gfar_write(&priv->regs->rxic, 0);
gfar_write(&priv->regs->rxic, priv->rxic);
gfar_write(&priv->regs->rxic, rx_queue->rxic);
}
if (likely(priv->txcoalescing)) {
if (likely(tx_queue->txcoalescing)) {
gfar_write(&priv->regs->txic, 0);
gfar_write(&priv->regs->txic, priv->txic);
gfar_write(&priv->regs->txic, tx_queue->txic);
}
}
@ -2087,12 +2157,14 @@ static irqreturn_t gfar_interrupt(int irq, void *dev_id)
static void adjust_link(struct net_device *dev)
{
struct gfar_private *priv = netdev_priv(dev);
struct gfar_priv_tx_q *tx_queue = NULL;
struct gfar __iomem *regs = priv->regs;
unsigned long flags;
struct phy_device *phydev = priv->phydev;
int new_state = 0;
spin_lock_irqsave(&priv->txlock, flags);
tx_queue = priv->tx_queue;
spin_lock_irqsave(&tx_queue->txlock, flags);
if (phydev->link) {
u32 tempval = gfar_read(&regs->maccfg2);
u32 ecntrl = gfar_read(&regs->ecntrl);
@ -2158,7 +2230,7 @@ static void adjust_link(struct net_device *dev)
if (new_state && netif_msg_link(priv))
phy_print_status(phydev);
spin_unlock_irqrestore(&priv->txlock, flags);
spin_unlock_irqrestore(&tx_queue->txlock, flags);
}
/* Update the hash table based on the current list of multicast
@ -2172,7 +2244,7 @@ static void gfar_set_multi(struct net_device *dev)
struct gfar __iomem *regs = priv->regs;
u32 tempval;
if(dev->flags & IFF_PROMISC) {
if (dev->flags & IFF_PROMISC) {
/* Set RCTRL to PROM */
tempval = gfar_read(&regs->rctrl);
tempval |= RCTRL_PROM;
@ -2184,7 +2256,7 @@ static void gfar_set_multi(struct net_device *dev)
gfar_write(&regs->rctrl, tempval);
}
if(dev->flags & IFF_ALLMULTI) {
if (dev->flags & IFF_ALLMULTI) {
/* Set the hash to rx all multicast frames */
gfar_write(&regs->igaddr0, 0xffffffff);
gfar_write(&regs->igaddr1, 0xffffffff);
@ -2236,7 +2308,7 @@ static void gfar_set_multi(struct net_device *dev)
em_num = 0;
}
if(dev->mc_count == 0)
if (dev->mc_count == 0)
return;
/* Parse the list, and set the appropriate bits */

116
drivers/net/gianfar.h
View file

@ -7,8 +7,9 @@
*
* Author: Andy Fleming
* Maintainer: Kumar Gala
* Modifier: Sandeep Gopalpet <sandeep.kumar@freescale.com>
*
* Copyright (c) 2002-2004 Freescale Semiconductor, Inc.
* Copyright 2002-2009 Freescale Semiconductor, Inc.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
@ -699,6 +700,76 @@ struct gfar {
#define FSL_GIANFAR_DEV_HAS_BD_STASHING 0x00000200
#define FSL_GIANFAR_DEV_HAS_BUF_STASHING 0x00000400
/**
* struct gfar_priv_tx_q - per tx queue structure
* @txlock: per queue tx spin lock
* @tx_skbuff:skb pointers
* @skb_curtx: to be used skb pointer
* @skb_dirtytx:the last used skb pointer
* @qindex: index of this queue
* @dev: back pointer to the dev structure
* @grp: back pointer to the group to which this queue belongs
* @tx_bd_base: First tx buffer descriptor
* @cur_tx: Next free ring entry
* @dirty_tx: First buffer in line to be transmitted
* @tx_ring_size: Tx ring size
* @num_txbdfree: number of free TxBds
* @txcoalescing: enable/disable tx coalescing
* @txic: transmit interrupt coalescing value
* @txcount: coalescing value if based on tx frame count
* @txtime: coalescing value if based on time
*/
struct gfar_priv_tx_q {
spinlock_t txlock __attribute__ ((aligned (SMP_CACHE_BYTES)));
struct sk_buff ** tx_skbuff;
/* Buffer descriptor pointers */
dma_addr_t tx_bd_dma_base;
struct txbd8 *tx_bd_base;
struct txbd8 *cur_tx;
struct txbd8 *dirty_tx;
struct net_device *dev;
u16 skb_curtx;
u16 skb_dirtytx;
u16 qindex;
unsigned int tx_ring_size;
unsigned int num_txbdfree;
/* Configuration info for the coalescing features */
unsigned char txcoalescing;
unsigned long txic;
unsigned short txcount;
unsigned short txtime;
};
/**
* struct gfar_priv_rx_q - per rx queue structure
* @rxlock: per queue rx spin lock
* @napi: the napi poll function
* @rx_skbuff: skb pointers
* @skb_currx: currently use skb pointer
* @rx_bd_base: First rx buffer descriptor
* @cur_rx: Next free rx ring entry
* @qindex: index of this queue
* @dev: back pointer to the dev structure
* @rx_ring_size: Rx ring size
* @rxcoalescing: enable/disable rx-coalescing
* @rxic: receive interrupt coalescing vlaue
*/
struct gfar_priv_rx_q {
spinlock_t rxlock __attribute__ ((aligned (SMP_CACHE_BYTES)));
struct napi_struct napi;
struct sk_buff ** rx_skbuff;
struct rxbd8 *rx_bd_base;
struct rxbd8 *cur_rx;
struct net_device *dev;
u16 skb_currx;
u16 qindex;
unsigned int rx_ring_size;
/* RX Coalescing values */
unsigned char rxcoalescing;
unsigned long rxic;
};
/* Struct stolen almost completely (and shamelessly) from the FCC enet source
* (Ok, that's not so true anymore, but there is a family resemblence)
* The GFAR buffer descriptors track the ring buffers. The rx_bd_base
@ -709,52 +780,15 @@ struct gfar {
* the buffer descriptor determines the actual condition.
*/
struct gfar_private {
/* Fields controlled by TX lock */
spinlock_t txlock;
/* Pointer to the array of skbuffs */
struct sk_buff ** tx_skbuff;
/* next free skb in the array */
u16 skb_curtx;
/* First skb in line to be transmitted */
u16 skb_dirtytx;
/* Configuration info for the coalescing features */
unsigned char txcoalescing;
unsigned long txic;
/* Buffer descriptor pointers */
dma_addr_t tx_bd_dma_base;
struct txbd8 *tx_bd_base; /* First tx buffer descriptor */
struct txbd8 *cur_tx; /* Next free ring entry */
struct txbd8 *dirty_tx; /* First buffer in line
to be transmitted */
unsigned int tx_ring_size;
unsigned int num_txbdfree; /* number of TxBDs free */
/* RX Locked fields */
spinlock_t rxlock;
struct device_node *node;
struct net_device *ndev;
struct of_device *ofdev;
struct napi_struct napi;
/* skb array and index */
struct sk_buff ** rx_skbuff;
u16 skb_currx;
struct gfar_priv_tx_q *tx_queue;
struct gfar_priv_rx_q *rx_queue;
/* RX Coalescing values */
unsigned char rxcoalescing;
unsigned long rxic;
struct rxbd8 *rx_bd_base; /* First Rx buffers */
struct rxbd8 *cur_rx; /* Next free rx ring entry */
/* RX parameters */
unsigned int rx_ring_size;
/* RX per device parameters */
unsigned int rx_buffer_size;
unsigned int rx_stash_size;
unsigned int rx_stash_index;

100
drivers/net/gianfar_ethtool.c
View file

@ -7,8 +7,9 @@
*
* Author: Andy Fleming
* Maintainer: Kumar Gala
* Modifier: Sandeep Gopalpet <sandeep.kumar@freescale.com>
*
* Copyright (c) 2003,2004 Freescale Semiconductor, Inc.
* Copyright 2003-2006, 2008-2009 Freescale Semiconductor, Inc.
*
* This software may be used and distributed according to
* the terms of the GNU Public License, Version 2, incorporated herein
@ -41,7 +42,7 @@
#include "gianfar.h"
extern void gfar_start(struct net_device *dev);
extern int gfar_clean_rx_ring(struct net_device *dev, int rx_work_limit);
extern int gfar_clean_rx_ring(struct gfar_priv_rx_q *rx_queue, int rx_work_limit);
#define GFAR_MAX_COAL_USECS 0xffff
#define GFAR_MAX_COAL_FRAMES 0xff
@ -197,12 +198,16 @@ static int gfar_gsettings(struct net_device *dev, struct ethtool_cmd *cmd)
{
struct gfar_private *priv = netdev_priv(dev);
struct phy_device *phydev = priv->phydev;
struct gfar_priv_rx_q *rx_queue = NULL;
struct gfar_priv_tx_q *tx_queue = NULL;
if (NULL == phydev)
return -ENODEV;
tx_queue = priv->tx_queue;
rx_queue = priv->rx_queue;
cmd->maxtxpkt = get_icft_value(priv->txic);
cmd->maxrxpkt = get_icft_value(priv->rxic);
cmd->maxtxpkt = get_icft_value(tx_queue->txic);
cmd->maxrxpkt = get_icft_value(rx_queue->rxic);
return phy_ethtool_gset(phydev, cmd);
}
@ -279,6 +284,8 @@ static unsigned int gfar_ticks2usecs(struct gfar_private *priv, unsigned int tic
static int gfar_gcoalesce(struct net_device *dev, struct ethtool_coalesce *cvals)
{
struct gfar_private *priv = netdev_priv(dev);
struct gfar_priv_rx_q *rx_queue = NULL;
struct gfar_priv_tx_q *tx_queue = NULL;
unsigned long rxtime;
unsigned long rxcount;
unsigned long txtime;
@ -290,10 +297,13 @@ static int gfar_gcoalesce(struct net_device *dev, struct ethtool_coalesce *cvals
if (NULL == priv->phydev)
return -ENODEV;
rxtime = get_ictt_value(priv->rxic);
rxcount = get_icft_value(priv->rxic);
txtime = get_ictt_value(priv->txic);
txcount = get_icft_value(priv->txic);
rx_queue = priv->rx_queue;
tx_queue = priv->tx_queue;
rxtime = get_ictt_value(rx_queue->rxic);
rxcount = get_icft_value(rx_queue->rxic);
txtime = get_ictt_value(tx_queue->txic);
txcount = get_icft_value(tx_queue->txic);
cvals->rx_coalesce_usecs = gfar_ticks2usecs(priv, rxtime);
cvals->rx_max_coalesced_frames = rxcount;
@ -339,16 +349,21 @@ static int gfar_gcoalesce(struct net_device *dev, struct ethtool_coalesce *cvals
static int gfar_scoalesce(struct net_device *dev, struct ethtool_coalesce *cvals)
{
struct gfar_private *priv = netdev_priv(dev);
struct gfar_priv_tx_q *tx_queue = NULL;
struct gfar_priv_rx_q *rx_queue = NULL;
if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_COALESCE))
return -EOPNOTSUPP;
tx_queue = priv->tx_queue;
rx_queue = priv->rx_queue;
/* Set up rx coalescing */
if ((cvals->rx_coalesce_usecs == 0) ||
(cvals->rx_max_coalesced_frames == 0))
priv->rxcoalescing = 0;
rx_queue->rxcoalescing = 0;
else
priv->rxcoalescing = 1;
rx_queue->rxcoalescing = 1;
if (NULL == priv->phydev)
return -ENODEV;
@ -366,15 +381,15 @@ static int gfar_scoalesce(struct net_device *dev, struct ethtool_coalesce *cvals
return -EINVAL;
}
priv->rxic = mk_ic_value(cvals->rx_max_coalesced_frames,
rx_queue->rxic = mk_ic_value(cvals->rx_max_coalesced_frames,
gfar_usecs2ticks(priv, cvals->rx_coalesce_usecs));
/* Set up tx coalescing */
if ((cvals->tx_coalesce_usecs == 0) ||
(cvals->tx_max_coalesced_frames == 0))
priv->txcoalescing = 0;
tx_queue->txcoalescing = 0;
else
priv->txcoalescing = 1;
tx_queue->txcoalescing = 1;
/* Check the bounds of the values */
if (cvals->tx_coalesce_usecs > GFAR_MAX_COAL_USECS) {
@ -389,16 +404,16 @@ static int gfar_scoalesce(struct net_device *dev, struct ethtool_coalesce *cvals
return -EINVAL;
}
priv->txic = mk_ic_value(cvals->tx_max_coalesced_frames,
tx_queue->txic = mk_ic_value(cvals->tx_max_coalesced_frames,
gfar_usecs2ticks(priv, cvals->tx_coalesce_usecs));
gfar_write(&priv->regs->rxic, 0);
if (priv->rxcoalescing)
gfar_write(&priv->regs->rxic, priv->rxic);
if (rx_queue->rxcoalescing)
gfar_write(&priv->regs->rxic, rx_queue->rxic);
gfar_write(&priv->regs->txic, 0);
if (priv->txcoalescing)
gfar_write(&priv->regs->txic, priv->txic);
if (tx_queue->txcoalescing)
gfar_write(&priv->regs->txic, tx_queue->txic);
return 0;
}
@ -409,6 +424,11 @@ static int gfar_scoalesce(struct net_device *dev, struct ethtool_coalesce *cvals
static void gfar_gringparam(struct net_device *dev, struct ethtool_ringparam *rvals)
{
struct gfar_private *priv = netdev_priv(dev);
struct gfar_priv_tx_q *tx_queue = NULL;
struct gfar_priv_rx_q *rx_queue = NULL;
tx_queue = priv->tx_queue;
rx_queue = priv->rx_queue;
rvals->rx_max_pending = GFAR_RX_MAX_RING_SIZE;
rvals->rx_mini_max_pending = GFAR_RX_MAX_RING_SIZE;
@ -418,10 +438,10 @@ static void gfar_gringparam(struct net_device *dev, struct ethtool_ringparam *rv
/* Values changeable by the user. The valid values are
* in the range 1 to the "*_max_pending" counterpart above.
*/
rvals->rx_pending = priv->rx_ring_size;
rvals->rx_mini_pending = priv->rx_ring_size;
rvals->rx_jumbo_pending = priv->rx_ring_size;
rvals->tx_pending = priv->tx_ring_size;
rvals->rx_pending = rx_queue->rx_ring_size;
rvals->rx_mini_pending = rx_queue->rx_ring_size;
rvals->rx_jumbo_pending = rx_queue->rx_ring_size;
rvals->tx_pending = tx_queue->tx_ring_size;
}
/* Change the current ring parameters, stopping the controller if
@ -431,6 +451,8 @@ static void gfar_gringparam(struct net_device *dev, struct ethtool_ringparam *rv
static int gfar_sringparam(struct net_device *dev, struct ethtool_ringparam *rvals)
{
struct gfar_private *priv = netdev_priv(dev);
struct gfar_priv_tx_q *tx_queue = NULL;
struct gfar_priv_rx_q *rx_queue = NULL;
int err = 0;
if (rvals->rx_pending > GFAR_RX_MAX_RING_SIZE)
@ -451,29 +473,32 @@ static int gfar_sringparam(struct net_device *dev, struct ethtool_ringparam *rva
return -EINVAL;
}
tx_queue = priv->tx_queue;
rx_queue = priv->rx_queue;
if (dev->flags & IFF_UP) {
unsigned long flags;
/* Halt TX and RX, and process the frames which
* have already been received */
spin_lock_irqsave(&priv->txlock, flags);
spin_lock(&priv->rxlock);
spin_lock_irqsave(&tx_queue->txlock, flags);
spin_lock(&rx_queue->rxlock);
gfar_halt(dev);
spin_unlock(&priv->rxlock);
spin_unlock_irqrestore(&priv->txlock, flags);
spin_unlock(&rx_queue->rxlock);
spin_unlock_irqrestore(&tx_queue->txlock, flags);
gfar_clean_rx_ring(dev, priv->rx_ring_size);
gfar_clean_rx_ring(rx_queue, rx_queue->rx_ring_size);
/* Now we take down the rings to rebuild them */
stop_gfar(dev);
}
/* Change the size */
priv->rx_ring_size = rvals->rx_pending;
priv->tx_ring_size = rvals->tx_pending;
priv->num_txbdfree = priv->tx_ring_size;
rx_queue->rx_ring_size = rvals->rx_pending;
tx_queue->tx_ring_size = rvals->tx_pending;
tx_queue->num_txbdfree = tx_queue->tx_ring_size;
/* Rebuild the rings with the new size */
if (dev->flags & IFF_UP) {
@ -486,24 +511,29 @@ static int gfar_sringparam(struct net_device *dev, struct ethtool_ringparam *rva
static int gfar_set_rx_csum(struct net_device *dev, uint32_t data)
{
struct gfar_private *priv = netdev_priv(dev);
struct gfar_priv_rx_q *rx_queue = NULL;
struct gfar_priv_tx_q *tx_queue = NULL;
unsigned long flags;
int err = 0;
if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_CSUM))
return -EOPNOTSUPP;
tx_queue = priv->tx_queue;
rx_queue = priv->rx_queue;
if (dev->flags & IFF_UP) {
/* Halt TX and RX, and process the frames which
* have already been received */
spin_lock_irqsave(&priv->txlock, flags);
spin_lock(&priv->rxlock);
spin_lock_irqsave(&tx_queue->txlock, flags);
spin_lock(&rx_queue->rxlock);
gfar_halt(dev);
spin_unlock(&priv->rxlock);
spin_unlock_irqrestore(&priv->txlock, flags);
spin_unlock(&rx_queue->rxlock);
spin_unlock_irqrestore(&tx_queue->txlock, flags);
gfar_clean_rx_ring(dev, priv->rx_ring_size);
gfar_clean_rx_ring(rx_queue, rx_queue->rx_ring_size);
/* Now we take down the rings to rebuild them */
stop_gfar(dev);

43
drivers/net/gianfar_sysfs.c
View file

@ -8,8 +8,9 @@
*
* Author: Andy Fleming
* Maintainer: Kumar Gala (galak@kernel.crashing.org)
* Modifier: Sandeep Gopalpet <sandeep.kumar@freescale.com>
*
* Copyright (c) 2002-2005 Freescale Semiconductor, Inc.
* Copyright 2002-2009 Freescale Semiconductor, Inc.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
@ -49,6 +50,7 @@ static ssize_t gfar_set_bd_stash(struct device *dev,
const char *buf, size_t count)
{
struct gfar_private *priv = netdev_priv(to_net_dev(dev));
struct gfar_priv_rx_q *rx_queue = NULL;
int new_setting = 0;
u32 temp;
unsigned long flags;
@ -56,6 +58,8 @@ static ssize_t gfar_set_bd_stash(struct device *dev,
if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_BD_STASHING))
return count;
rx_queue = priv->rx_queue;
/* Find out the new setting */
if (!strncmp("on", buf, count - 1) || !strncmp("1", buf, count - 1))
new_setting = 1;
@ -65,7 +69,7 @@ static ssize_t gfar_set_bd_stash(struct device *dev,
else
return count;
spin_lock_irqsave(&priv->rxlock, flags);
spin_lock_irqsave(&rx_queue->rxlock, flags);
/* Set the new stashing value */
priv->bd_stash_en = new_setting;
@ -79,7 +83,7 @@ static ssize_t gfar_set_bd_stash(struct device *dev,
gfar_write(&priv->regs->attr, temp);
spin_unlock_irqrestore(&priv->rxlock, flags);
spin_unlock_irqrestore(&rx_queue->rxlock, flags);
return count;
}
@ -99,6 +103,7 @@ static ssize_t gfar_set_rx_stash_size(struct device *dev,
const char *buf, size_t count)
{
struct gfar_private *priv = netdev_priv(to_net_dev(dev));
struct gfar_priv_rx_q *rx_queue = NULL;
unsigned int length = simple_strtoul(buf, NULL, 0);
u32 temp;
unsigned long flags;
@ -106,7 +111,9 @@ static ssize_t gfar_set_rx_stash_size(struct device *dev,
if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_BUF_STASHING))
return count;
spin_lock_irqsave(&priv->rxlock, flags);
rx_queue = priv->rx_queue;
spin_lock_irqsave(&rx_queue->rxlock, flags);
if (length > priv->rx_buffer_size)
goto out;
@ -131,7 +138,7 @@ static ssize_t gfar_set_rx_stash_size(struct device *dev,
gfar_write(&priv->regs->attr, temp);
out:
spin_unlock_irqrestore(&priv->rxlock, flags);
spin_unlock_irqrestore(&rx_queue->rxlock, flags);
return count;
}
@ -154,6 +161,7 @@ static ssize_t gfar_set_rx_stash_index(struct device *dev,
const char *buf, size_t count)
{
struct gfar_private *priv = netdev_priv(to_net_dev(dev));
struct gfar_priv_rx_q *rx_queue = NULL;
unsigned short index = simple_strtoul(buf, NULL, 0);
u32 temp;
unsigned long flags;
@ -161,7 +169,9 @@ static ssize_t gfar_set_rx_stash_index(struct device *dev,
if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_BUF_STASHING))
return count;
spin_lock_irqsave(&priv->rxlock, flags);
rx_queue = priv->rx_queue;
spin_lock_irqsave(&rx_queue->rxlock, flags);
if (index > priv->rx_stash_size)
goto out;
@ -176,7 +186,7 @@ static ssize_t gfar_set_rx_stash_index(struct device *dev,
gfar_write(&priv->regs->attreli, flags);
out:
spin_unlock_irqrestore(&priv->rxlock, flags);
spin_unlock_irqrestore(&rx_queue->rxlock, flags);
return count;
}
@ -198,6 +208,7 @@ static ssize_t gfar_set_fifo_threshold(struct device *dev,
const char *buf, size_t count)
{
struct gfar_private *priv = netdev_priv(to_net_dev(dev));
struct gfar_priv_tx_q *tx_queue = NULL;
unsigned int length = simple_strtoul(buf, NULL, 0);
u32 temp;
unsigned long flags;
@ -205,7 +216,9 @@ static ssize_t gfar_set_fifo_threshold(struct device *dev,
if (length > GFAR_MAX_FIFO_THRESHOLD)
return count;
spin_lock_irqsave(&priv->txlock, flags);
tx_queue = priv->tx_queue;
spin_lock_irqsave(&tx_queue->txlock, flags);
priv->fifo_threshold = length;
@ -214,7 +227,7 @@ static ssize_t gfar_set_fifo_threshold(struct device *dev,
temp |= length;
gfar_write(&priv->regs->fifo_tx_thr, temp);
spin_unlock_irqrestore(&priv->txlock, flags);
spin_unlock_irqrestore(&tx_queue->txlock, flags);
return count;
}
@ -235,6 +248,7 @@ static ssize_t gfar_set_fifo_starve(struct device *dev,
const char *buf, size_t count)
{
struct gfar_private *priv = netdev_priv(to_net_dev(dev));
struct gfar_priv_tx_q *tx_queue = NULL;
unsigned int num = simple_strtoul(buf, NULL, 0);
u32 temp;
unsigned long flags;
@ -242,7 +256,8 @@ static ssize_t gfar_set_fifo_starve(struct device *dev,
if (num > GFAR_MAX_FIFO_STARVE)
return count;
spin_lock_irqsave(&priv->txlock, flags);
tx_queue = priv->tx_queue;
spin_lock_irqsave(&tx_queue->txlock, flags);
priv->fifo_starve = num;
@ -251,7 +266,7 @@ static ssize_t gfar_set_fifo_starve(struct device *dev,
temp |= num;
gfar_write(&priv->regs->fifo_tx_starve, temp);
spin_unlock_irqrestore(&priv->txlock, flags);
spin_unlock_irqrestore(&tx_queue->txlock, flags);
return count;
}
@ -273,6 +288,7 @@ static ssize_t gfar_set_fifo_starve_off(struct device *dev,
const char *buf, size_t count)
{
struct gfar_private *priv = netdev_priv(to_net_dev(dev));
struct gfar_priv_tx_q *tx_queue = NULL;
unsigned int num = simple_strtoul(buf, NULL, 0);
u32 temp;
unsigned long flags;
@ -280,7 +296,8 @@ static ssize_t gfar_set_fifo_starve_off(struct device *dev,
if (num > GFAR_MAX_FIFO_STARVE_OFF)
return count;
spin_lock_irqsave(&priv->txlock, flags);
tx_queue = priv->tx_queue;
spin_lock_irqsave(&tx_queue->txlock, flags);
priv->fifo_starve_off = num;
@ -289,7 +306,7 @@ static ssize_t gfar_set_fifo_starve_off(struct device *dev,
temp |= num;
gfar_write(&priv->regs->fifo_tx_starve_shutoff, temp);
spin_unlock_irqrestore(&priv->txlock, flags);
spin_unlock_irqrestore(&tx_queue->txlock, flags);
return count;
}