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Diffstat (limited to 'target/linux/lantiq/patches-3.2/0043-MIPS-NET-several-fixes-to-etop-driver.patch')
-rw-r--r--target/linux/lantiq/patches-3.2/0043-MIPS-NET-several-fixes-to-etop-driver.patch440
1 files changed, 0 insertions, 440 deletions
diff --git a/target/linux/lantiq/patches-3.2/0043-MIPS-NET-several-fixes-to-etop-driver.patch b/target/linux/lantiq/patches-3.2/0043-MIPS-NET-several-fixes-to-etop-driver.patch
deleted file mode 100644
index 7100f8ae63..0000000000
--- a/target/linux/lantiq/patches-3.2/0043-MIPS-NET-several-fixes-to-etop-driver.patch
+++ /dev/null
@@ -1,440 +0,0 @@
-From 7fd67cfebce500eaeaf209c303d7c1edf1aa34db Mon Sep 17 00:00:00 2001
-From: John Crispin <blogic@openwrt.org>
-Date: Wed, 21 Mar 2012 18:14:06 +0100
-Subject: [PATCH 43/73] MIPS: NET: several fixes to etop driver
-
----
- drivers/net/ethernet/lantiq_etop.c | 208 +++++++++++++++++++-----------------
- 1 files changed, 108 insertions(+), 100 deletions(-)
-
---- a/drivers/net/ethernet/lantiq_etop.c
-+++ b/drivers/net/ethernet/lantiq_etop.c
-@@ -103,15 +103,6 @@
- /* the newer xway socks have a embedded 3/7 port gbit multiplexer */
- #define ltq_has_gbit() (ltq_is_ar9() || ltq_is_vr9())
-
--/* use 2 static channels for TX/RX
-- depending on the SoC we need to use different DMA channels for ethernet */
--#define LTQ_ETOP_TX_CHANNEL 1
--#define LTQ_ETOP_RX_CHANNEL ((ltq_is_ase()) ? (5) : \
-- ((ltq_has_gbit()) ? (0) : (6)))
--
--#define IS_TX(x) (x == LTQ_ETOP_TX_CHANNEL)
--#define IS_RX(x) (x == LTQ_ETOP_RX_CHANNEL)
--
- #define ltq_etop_r32(x) ltq_r32(ltq_etop_membase + (x))
- #define ltq_etop_w32(x, y) ltq_w32(x, ltq_etop_membase + (y))
- #define ltq_etop_w32_mask(x, y, z) \
-@@ -128,8 +119,8 @@ static void __iomem *ltq_etop_membase;
- static void __iomem *ltq_gbit_membase;
-
- struct ltq_etop_chan {
-- int idx;
- int tx_free;
-+ int irq;
- struct net_device *netdev;
- struct napi_struct napi;
- struct ltq_dma_channel dma;
-@@ -144,8 +135,8 @@ struct ltq_etop_priv {
- struct mii_bus *mii_bus;
- struct phy_device *phydev;
-
-- struct ltq_etop_chan ch[MAX_DMA_CHAN];
-- int tx_free[MAX_DMA_CHAN >> 1];
-+ struct ltq_etop_chan txch;
-+ struct ltq_etop_chan rxch;
-
- spinlock_t lock;
-
-@@ -206,8 +197,10 @@ ltq_etop_poll_rx(struct napi_struct *nap
- {
- struct ltq_etop_chan *ch = container_of(napi,
- struct ltq_etop_chan, napi);
-+ struct ltq_etop_priv *priv = netdev_priv(ch->netdev);
- int rx = 0;
- int complete = 0;
-+ unsigned long flags;
-
- while ((rx < budget) && !complete) {
- struct ltq_dma_desc *desc = &ch->dma.desc_base[ch->dma.desc];
-@@ -221,7 +214,9 @@ ltq_etop_poll_rx(struct napi_struct *nap
- }
- if (complete || !rx) {
- napi_complete(&ch->napi);
-+ spin_lock_irqsave(&priv->lock, flags);
- ltq_dma_ack_irq(&ch->dma);
-+ spin_unlock_irqrestore(&priv->lock, flags);
- }
- return rx;
- }
-@@ -233,7 +228,7 @@ ltq_etop_poll_tx(struct napi_struct *nap
- container_of(napi, struct ltq_etop_chan, napi);
- struct ltq_etop_priv *priv = netdev_priv(ch->netdev);
- struct netdev_queue *txq =
-- netdev_get_tx_queue(ch->netdev, ch->idx >> 1);
-+ netdev_get_tx_queue(ch->netdev, ch->dma.nr >> 1);
- unsigned long flags;
-
- spin_lock_irqsave(&priv->lock, flags);
-@@ -251,7 +246,9 @@ ltq_etop_poll_tx(struct napi_struct *nap
- if (netif_tx_queue_stopped(txq))
- netif_tx_start_queue(txq);
- napi_complete(&ch->napi);
-+ spin_lock_irqsave(&priv->lock, flags);
- ltq_dma_ack_irq(&ch->dma);
-+ spin_unlock_irqrestore(&priv->lock, flags);
- return 1;
- }
-
-@@ -259,9 +256,10 @@ static irqreturn_t
- ltq_etop_dma_irq(int irq, void *_priv)
- {
- struct ltq_etop_priv *priv = _priv;
-- int ch = irq - LTQ_DMA_ETOP;
--
-- napi_schedule(&priv->ch[ch].napi);
-+ if (irq == priv->txch.dma.irq)
-+ napi_schedule(&priv->txch.napi);
-+ else
-+ napi_schedule(&priv->rxch.napi);
- return IRQ_HANDLED;
- }
-
-@@ -273,7 +271,7 @@ ltq_etop_free_channel(struct net_device
- ltq_dma_free(&ch->dma);
- if (ch->dma.irq)
- free_irq(ch->dma.irq, priv);
-- if (IS_RX(ch->idx)) {
-+ if (ch == &priv->txch) {
- int desc;
- for (desc = 0; desc < LTQ_DESC_NUM; desc++)
- dev_kfree_skb_any(ch->skb[ch->dma.desc]);
-@@ -284,7 +282,6 @@ static void
- ltq_etop_hw_exit(struct net_device *dev)
- {
- struct ltq_etop_priv *priv = netdev_priv(dev);
-- int i;
-
- clk_disable(priv->clk_ppe);
-
-@@ -296,9 +293,8 @@ ltq_etop_hw_exit(struct net_device *dev)
- clk_disable(priv->clk_ephycgu);
- }
-
-- for (i = 0; i < MAX_DMA_CHAN; i++)
-- if (IS_TX(i) || IS_RX(i))
-- ltq_etop_free_channel(dev, &priv->ch[i]);
-+ ltq_etop_free_channel(dev, &priv->txch);
-+ ltq_etop_free_channel(dev, &priv->rxch);
- }
-
- static void
-@@ -326,8 +322,6 @@ ltq_etop_hw_init(struct net_device *dev)
- {
- struct ltq_etop_priv *priv = netdev_priv(dev);
- unsigned int mii_mode = priv->pldata->mii_mode;
-- int err = 0;
-- int i;
-
- clk_enable(priv->clk_ppe);
-
-@@ -369,31 +363,50 @@ ltq_etop_hw_init(struct net_device *dev)
- /* enable crc generation */
- ltq_etop_w32(PPE32_CGEN, LQ_PPE32_ENET_MAC_CFG);
-
-+ return 0;
-+}
-+
-+static int
-+ltq_etop_dma_init(struct net_device *dev)
-+{
-+ struct ltq_etop_priv *priv = netdev_priv(dev);
-+ int tx = 1;
-+ int rx = ((ltq_is_ase()) ? (5) : \
-+ ((ltq_is_ar9()) ? (0) : (6)));
-+ int tx_irq = LTQ_DMA_ETOP + tx;
-+ int rx_irq = LTQ_DMA_ETOP + rx;
-+ int err;
-+
- ltq_dma_init_port(DMA_PORT_ETOP);
-
-- for (i = 0; i < MAX_DMA_CHAN && !err; i++) {
-- int irq = LTQ_DMA_ETOP + i;
-- struct ltq_etop_chan *ch = &priv->ch[i];
--
-- ch->idx = ch->dma.nr = i;
--
-- if (IS_TX(i)) {
-- ltq_dma_alloc_tx(&ch->dma);
-- err = request_irq(irq, ltq_etop_dma_irq, IRQF_DISABLED,
-- "etop_tx", priv);
-- } else if (IS_RX(i)) {
-- ltq_dma_alloc_rx(&ch->dma);
-- for (ch->dma.desc = 0; ch->dma.desc < LTQ_DESC_NUM;
-- ch->dma.desc++)
-- if (ltq_etop_alloc_skb(ch))
-- err = -ENOMEM;
-- ch->dma.desc = 0;
-- err = request_irq(irq, ltq_etop_dma_irq, IRQF_DISABLED,
-- "etop_rx", priv);
-+ priv->txch.dma.nr = tx;
-+ ltq_dma_alloc_tx(&priv->txch.dma);
-+ err = request_irq(tx_irq, ltq_etop_dma_irq, IRQF_DISABLED,
-+ "eth_tx", priv);
-+ if (err) {
-+ netdev_err(dev, "failed to allocate tx irq\n");
-+ goto err_out;
-+ }
-+ priv->txch.dma.irq = tx_irq;
-+
-+ priv->rxch.dma.nr = rx;
-+ ltq_dma_alloc_rx(&priv->rxch.dma);
-+ for (priv->rxch.dma.desc = 0; priv->rxch.dma.desc < LTQ_DESC_NUM;
-+ priv->rxch.dma.desc++) {
-+ if (ltq_etop_alloc_skb(&priv->rxch)) {
-+ netdev_err(dev, "failed to allocate skbs\n");
-+ err = -ENOMEM;
-+ goto err_out;
- }
-- if (!err)
-- ch->dma.irq = irq;
- }
-+ priv->rxch.dma.desc = 0;
-+ err = request_irq(rx_irq, ltq_etop_dma_irq, IRQF_DISABLED,
-+ "eth_rx", priv);
-+ if (err)
-+ netdev_err(dev, "failed to allocate rx irq\n");
-+ else
-+ priv->rxch.dma.irq = rx_irq;
-+err_out:
- return err;
- }
-
-@@ -410,7 +423,10 @@ ltq_etop_get_settings(struct net_device
- {
- struct ltq_etop_priv *priv = netdev_priv(dev);
-
-- return phy_ethtool_gset(priv->phydev, cmd);
-+ if (priv->phydev)
-+ return phy_ethtool_gset(priv->phydev, cmd);
-+ else
-+ return 0;
- }
-
- static int
-@@ -418,7 +434,10 @@ ltq_etop_set_settings(struct net_device
- {
- struct ltq_etop_priv *priv = netdev_priv(dev);
-
-- return phy_ethtool_sset(priv->phydev, cmd);
-+ if (priv->phydev)
-+ return phy_ethtool_sset(priv->phydev, cmd);
-+ else
-+ return 0;
- }
-
- static int
-@@ -426,7 +445,10 @@ ltq_etop_nway_reset(struct net_device *d
- {
- struct ltq_etop_priv *priv = netdev_priv(dev);
-
-- return phy_start_aneg(priv->phydev);
-+ if (priv->phydev)
-+ return phy_start_aneg(priv->phydev);
-+ else
-+ return 0;
- }
-
- static const struct ethtool_ops ltq_etop_ethtool_ops = {
-@@ -618,18 +640,19 @@ static int
- ltq_etop_open(struct net_device *dev)
- {
- struct ltq_etop_priv *priv = netdev_priv(dev);
-- int i;
-+ unsigned long flags;
-
-- for (i = 0; i < MAX_DMA_CHAN; i++) {
-- struct ltq_etop_chan *ch = &priv->ch[i];
-+ napi_enable(&priv->txch.napi);
-+ napi_enable(&priv->rxch.napi);
-+
-+ spin_lock_irqsave(&priv->lock, flags);
-+ ltq_dma_open(&priv->txch.dma);
-+ ltq_dma_open(&priv->rxch.dma);
-+ spin_unlock_irqrestore(&priv->lock, flags);
-
-- if (!IS_TX(i) && (!IS_RX(i)))
-- continue;
-- ltq_dma_open(&ch->dma);
-- napi_enable(&ch->napi);
-- }
- if (priv->phydev)
- phy_start(priv->phydev);
-+
- netif_tx_start_all_queues(dev);
- return 0;
- }
-@@ -638,19 +661,19 @@ static int
- ltq_etop_stop(struct net_device *dev)
- {
- struct ltq_etop_priv *priv = netdev_priv(dev);
-- int i;
-+ unsigned long flags;
-
- netif_tx_stop_all_queues(dev);
- if (priv->phydev)
- phy_stop(priv->phydev);
-- for (i = 0; i < MAX_DMA_CHAN; i++) {
-- struct ltq_etop_chan *ch = &priv->ch[i];
-+ napi_disable(&priv->txch.napi);
-+ napi_disable(&priv->rxch.napi);
-+
-+ spin_lock_irqsave(&priv->lock, flags);
-+ ltq_dma_close(&priv->txch.dma);
-+ ltq_dma_close(&priv->rxch.dma);
-+ spin_unlock_irqrestore(&priv->lock, flags);
-
-- if (!IS_RX(i) && !IS_TX(i))
-- continue;
-- napi_disable(&ch->napi);
-- ltq_dma_close(&ch->dma);
-- }
- return 0;
- }
-
-@@ -660,16 +683,16 @@ ltq_etop_tx(struct sk_buff *skb, struct
- int queue = skb_get_queue_mapping(skb);
- struct netdev_queue *txq = netdev_get_tx_queue(dev, queue);
- struct ltq_etop_priv *priv = netdev_priv(dev);
-- struct ltq_etop_chan *ch = &priv->ch[(queue << 1) | 1];
-- struct ltq_dma_desc *desc = &ch->dma.desc_base[ch->dma.desc];
-+ struct ltq_dma_desc *desc =
-+ &priv->txch.dma.desc_base[priv->txch.dma.desc];
- unsigned long flags;
- u32 byte_offset;
- int len;
-
- len = skb->len < ETH_ZLEN ? ETH_ZLEN : skb->len;
-
-- if ((desc->ctl & (LTQ_DMA_OWN | LTQ_DMA_C)) || ch->skb[ch->dma.desc]) {
-- dev_kfree_skb_any(skb);
-+ if ((desc->ctl & (LTQ_DMA_OWN | LTQ_DMA_C)) ||
-+ priv->txch.skb[priv->txch.dma.desc]) {
- netdev_err(dev, "tx ring full\n");
- netif_tx_stop_queue(txq);
- return NETDEV_TX_BUSY;
-@@ -677,7 +700,7 @@ ltq_etop_tx(struct sk_buff *skb, struct
-
- /* dma needs to start on a 16 byte aligned address */
- byte_offset = CPHYSADDR(skb->data) % 16;
-- ch->skb[ch->dma.desc] = skb;
-+ priv->txch.skb[priv->txch.dma.desc] = skb;
-
- dev->trans_start = jiffies;
-
-@@ -687,11 +710,11 @@ ltq_etop_tx(struct sk_buff *skb, struct
- wmb();
- desc->ctl = LTQ_DMA_OWN | LTQ_DMA_SOP | LTQ_DMA_EOP |
- LTQ_DMA_TX_OFFSET(byte_offset) | (len & LTQ_DMA_SIZE_MASK);
-- ch->dma.desc++;
-- ch->dma.desc %= LTQ_DESC_NUM;
-+ priv->txch.dma.desc++;
-+ priv->txch.dma.desc %= LTQ_DESC_NUM;
- spin_unlock_irqrestore(&priv->lock, flags);
-
-- if (ch->dma.desc_base[ch->dma.desc].ctl & LTQ_DMA_OWN)
-+ if (priv->txch.dma.desc_base[priv->txch.dma.desc].ctl & LTQ_DMA_OWN)
- netif_tx_stop_queue(txq);
-
- return NETDEV_TX_OK;
-@@ -776,6 +799,10 @@ ltq_etop_init(struct net_device *dev)
- err = ltq_etop_hw_init(dev);
- if (err)
- goto err_hw;
-+ err = ltq_etop_dma_init(dev);
-+ if (err)
-+ goto err_hw;
-+
- ltq_etop_change_mtu(dev, 1500);
-
- memcpy(&mac, &priv->pldata->mac, sizeof(struct sockaddr));
-@@ -811,6 +838,9 @@ ltq_etop_tx_timeout(struct net_device *d
- err = ltq_etop_hw_init(dev);
- if (err)
- goto err_hw;
-+ err = ltq_etop_dma_init(dev);
-+ if (err)
-+ goto err_hw;
- dev->trans_start = jiffies;
- netif_wake_queue(dev);
- return;
-@@ -834,14 +864,13 @@ static const struct net_device_ops ltq_e
- .ndo_tx_timeout = ltq_etop_tx_timeout,
- };
-
--static int __init
-+static int __devinit
- ltq_etop_probe(struct platform_device *pdev)
- {
- struct net_device *dev;
- struct ltq_etop_priv *priv;
- struct resource *res, *gbit_res;
- int err;
-- int i;
-
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!res) {
-@@ -917,15 +946,10 @@ ltq_etop_probe(struct platform_device *p
-
- spin_lock_init(&priv->lock);
-
-- for (i = 0; i < MAX_DMA_CHAN; i++) {
-- if (IS_TX(i))
-- netif_napi_add(dev, &priv->ch[i].napi,
-- ltq_etop_poll_tx, 8);
-- else if (IS_RX(i))
-- netif_napi_add(dev, &priv->ch[i].napi,
-- ltq_etop_poll_rx, 32);
-- priv->ch[i].netdev = dev;
-- }
-+ netif_napi_add(dev, &priv->txch.napi, ltq_etop_poll_tx, 8);
-+ netif_napi_add(dev, &priv->rxch.napi, ltq_etop_poll_rx, 32);
-+ priv->txch.netdev = dev;
-+ priv->rxch.netdev = dev;
-
- err = register_netdev(dev);
- if (err)
-@@ -955,6 +979,7 @@ ltq_etop_remove(struct platform_device *
- }
-
- static struct platform_driver ltq_mii_driver = {
-+ .probe = ltq_etop_probe,
- .remove = __devexit_p(ltq_etop_remove),
- .driver = {
- .name = "ltq_etop",
-@@ -962,24 +987,7 @@ static struct platform_driver ltq_mii_dr
- },
- };
-
--int __init
--init_ltq_etop(void)
--{
-- int ret = platform_driver_probe(&ltq_mii_driver, ltq_etop_probe);
--
-- if (ret)
-- pr_err("ltq_etop: Error registering platfom driver!");
-- return ret;
--}
--
--static void __exit
--exit_ltq_etop(void)
--{
-- platform_driver_unregister(&ltq_mii_driver);
--}
--
--module_init(init_ltq_etop);
--module_exit(exit_ltq_etop);
-+module_platform_driver(ltq_mii_driver);
-
- MODULE_AUTHOR("John Crispin <blogic@openwrt.org>");
- MODULE_DESCRIPTION("Lantiq SoC ETOP");
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-04 11:59:36 +0000