diff options
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.patch | 440 |
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 7100f8ae6..000000000 --- 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(<q_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(<q_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"); |