*/
#include <linux/kernel.h>
-@@ -20,11 +20,16 @@
+@@ -20,12 +20,17 @@
#include <linux/mm.h>
#include <linux/platform_device.h>
#include <linux/ethtool.h>
#include <linux/io.h>
#include <linux/dma-mapping.h>
#include <linux/module.h>
+ #include <linux/property.h>
+#include <linux/clk.h>
+#include <linux/of_net.h>
+#include <linux/of_irq.h>
#include <asm/checksum.h>
-@@ -32,7 +37,7 @@
+@@ -33,7 +38,7 @@
#include <xway_dma.h>
#include <lantiq_platform.h>
#define MDIO_REQUEST 0x80000000
#define MDIO_READ 0x40000000
#define MDIO_ADDR_MASK 0x1f
-@@ -41,44 +46,91 @@
+@@ -42,44 +47,91 @@
#define MDIO_REG_OFFSET 0x10
#define MDIO_VAL_MASK 0xffff
-/* use 2 static channels for TX/RX */
-#define LTQ_ETOP_TX_CHANNEL 1
-#define LTQ_ETOP_RX_CHANNEL 6
--#define IS_TX(x) (x == LTQ_ETOP_TX_CHANNEL)
--#define IS_RX(x) (x == LTQ_ETOP_RX_CHANNEL)
+-#define IS_TX(x) ((x) == LTQ_ETOP_TX_CHANNEL)
+-#define IS_RX(x) ((x) == LTQ_ETOP_RX_CHANNEL)
+#define ETOP_CFG_MASK 0xfff
+#define ETOP_CFG_FEN0 (1 << 8)
+#define ETOP_CFG_SEN0 (1 << 6)
struct net_device *netdev;
struct napi_struct napi;
struct ltq_dma_channel dma;
-@@ -88,23 +140,36 @@ struct ltq_etop_chan {
+@@ -89,26 +141,39 @@ struct ltq_etop_chan {
struct ltq_etop_priv {
struct net_device *netdev;
struct platform_device *pdev;
+ struct ltq_etop_chan txch;
+ struct ltq_etop_chan rxch;
+ int tx_burst_len;
+ int rx_burst_len;
+
- spinlock_t lock;
+ int tx_irq;
+ int rx_irq;
+ ch->skb[ch->dma.desc] = dev_alloc_skb(MAX_DMA_DATA_LEN);
if (!ch->skb[ch->dma.desc])
return -ENOMEM;
- ch->dma.desc_base[ch->dma.desc].addr = dma_map_single(&priv->pdev->dev,
-@@ -139,8 +204,11 @@ ltq_etop_hw_receive(struct ltq_etop_chan
+ ch->dma.desc_base[ch->dma.desc].addr =
+@@ -143,8 +208,11 @@ ltq_etop_hw_receive(struct ltq_etop_chan
spin_unlock_irqrestore(&priv->lock, flags);
skb_put(skb, len);
}
static int
-@@ -148,7 +216,9 @@ ltq_etop_poll_rx(struct napi_struct *nap
+@@ -152,7 +220,9 @@ ltq_etop_poll_rx(struct napi_struct *nap
{
struct ltq_etop_chan *ch = container_of(napi,
struct ltq_etop_chan, napi);
while (work_done < budget) {
struct ltq_dma_desc *desc = &ch->dma.desc_base[ch->dma.desc];
-@@ -160,7 +230,9 @@ ltq_etop_poll_rx(struct napi_struct *nap
+@@ -164,7 +234,9 @@ ltq_etop_poll_rx(struct napi_struct *nap
}
if (work_done < budget) {
napi_complete_done(&ch->napi, work_done);
}
return work_done;
}
-@@ -172,12 +244,14 @@ ltq_etop_poll_tx(struct napi_struct *nap
+@@ -176,12 +248,14 @@ 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 =
dev_kfree_skb_any(ch->skb[ch->tx_free]);
ch->skb[ch->tx_free] = NULL;
memset(&ch->dma.desc_base[ch->tx_free], 0,
-@@ -190,7 +264,9 @@ ltq_etop_poll_tx(struct napi_struct *nap
+@@ -194,7 +268,9 @@ ltq_etop_poll_tx(struct napi_struct *nap
if (netif_tx_queue_stopped(txq))
netif_tx_start_queue(txq);
napi_complete(&ch->napi);
return 1;
}
-@@ -198,9 +274,10 @@ static irqreturn_t
+@@ -202,9 +278,10 @@ static irqreturn_t
ltq_etop_dma_irq(int irq, void *_priv)
{
struct ltq_etop_priv *priv = _priv;
return IRQ_HANDLED;
}
-@@ -212,7 +289,7 @@ ltq_etop_free_channel(struct net_device
+@@ -216,7 +293,7 @@ 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]);
-@@ -223,66 +300,135 @@ static void
+@@ -228,80 +305,135 @@ static void
ltq_etop_hw_exit(struct net_device *dev)
{
struct ltq_etop_priv *priv = netdev_priv(dev);
{
struct ltq_etop_priv *priv = netdev_priv(dev);
- int i;
+- int err;
+ phy_interface_t mii_mode = priv->mii_mode;
- ltq_pmu_enable(PMU_PPE);
+
+ switch (mii_mode) {
case PHY_INTERFACE_MODE_RMII:
-- ltq_etop_w32_mask(ETOP_MII_MASK,
-- ETOP_MII_REVERSE, LTQ_ETOP_CFG);
+- ltq_etop_w32_mask(ETOP_MII_MASK, ETOP_MII_REVERSE,
+- LTQ_ETOP_CFG);
+ ltq_etop_w32_mask(ETOP_CFG_MASK, ETOP_CFG_REMII0 | ETOP_CFG_OFF1 |
+ ETOP_CFG_SEN0 | ETOP_CFG_FEN0, LTQ_ETOP_CFG);
break;
case PHY_INTERFACE_MODE_MII:
-- ltq_etop_w32_mask(ETOP_MII_MASK,
-- ETOP_MII_NORMAL, LTQ_ETOP_CFG);
+- ltq_etop_w32_mask(ETOP_MII_MASK, ETOP_MII_NORMAL,
+- LTQ_ETOP_CFG);
+ ltq_etop_w32_mask(ETOP_CFG_MASK, ETOP_CFG_OFF1 |
+ ETOP_CFG_SEN0 | ETOP_CFG_FEN0, LTQ_ETOP_CFG);
break;
+ break;
+ }
netdev_err(dev, "unknown mii mode %d\n",
-- priv->pldata->mii_mode);
-+ mii_mode);
+- priv->pldata->mii_mode);
++ mii_mode);
return -ENOTSUPP;
}
+ int rx = priv->rx_irq - LTQ_DMA_ETOP;
+ int err;
- ltq_dma_init_port(DMA_PORT_ETOP);
+ ltq_dma_init_port(DMA_PORT_ETOP, priv->tx_burst_len, priv->rx_burst_len);
- for (i = 0; i < MAX_DMA_CHAN; i++) {
- int irq = LTQ_DMA_CH0_INT + i;
- struct ltq_etop_chan *ch = &priv->ch[i];
-
-- ch->idx = ch->dma.nr = i;
+- ch->dma.nr = i;
+- ch->idx = ch->dma.nr;
- ch->dma.dev = &priv->pdev->dev;
-
- if (IS_TX(i)) {
- ltq_dma_alloc_tx(&ch->dma);
-- request_irq(irq, ltq_etop_dma_irq, 0, "etop_tx", priv);
+- err = request_irq(irq, ltq_etop_dma_irq, 0, "etop_tx", priv);
+- if (err) {
+- netdev_err(dev,
+- "Unable to get Tx DMA IRQ %d\n",
+- irq);
+- return err;
+- }
- } else if (IS_RX(i)) {
- ltq_dma_alloc_rx(&ch->dma);
- for (ch->dma.desc = 0; ch->dma.desc < LTQ_DESC_NUM;
- if (ltq_etop_alloc_skb(ch))
- return -ENOMEM;
- ch->dma.desc = 0;
-- request_irq(irq, ltq_etop_dma_irq, 0, "etop_rx", priv);
+- err = request_irq(irq, ltq_etop_dma_irq, 0, "etop_rx", priv);
+- if (err) {
+- netdev_err(dev,
+- "Unable to get Rx DMA IRQ %d\n",
+- irq);
+- return err;
+- }
+ priv->txch.dma.nr = tx;
+ priv->txch.dma.dev = &priv->pdev->dev;
+ ltq_dma_alloc_tx(&priv->txch.dma);
}
static void
-@@ -301,6 +447,39 @@ static const struct ethtool_ops ltq_etop
+@@ -320,6 +452,39 @@ static const struct ethtool_ops ltq_etop
};
static int
ltq_etop_mdio_wr(struct mii_bus *bus, int phy_addr, int phy_reg, u16 phy_data)
{
u32 val = MDIO_REQUEST |
-@@ -308,9 +487,9 @@ ltq_etop_mdio_wr(struct mii_bus *bus, in
+@@ -327,9 +492,9 @@ ltq_etop_mdio_wr(struct mii_bus *bus, in
((phy_reg & MDIO_REG_MASK) << MDIO_REG_OFFSET) |
phy_data;
return 0;
}
-@@ -321,12 +500,12 @@ ltq_etop_mdio_rd(struct mii_bus *bus, in
+@@ -340,12 +505,12 @@ ltq_etop_mdio_rd(struct mii_bus *bus, in
((phy_addr & MDIO_ADDR_MASK) << MDIO_ADDR_OFFSET) |
((phy_reg & MDIO_REG_MASK) << MDIO_REG_OFFSET);
return val;
}
-@@ -342,7 +521,10 @@ ltq_etop_mdio_probe(struct net_device *d
+@@ -361,7 +526,10 @@ ltq_etop_mdio_probe(struct net_device *d
struct ltq_etop_priv *priv = netdev_priv(dev);
struct phy_device *phydev;
if (!phydev) {
netdev_err(dev, "no PHY found\n");
-@@ -350,14 +532,17 @@ ltq_etop_mdio_probe(struct net_device *d
+@@ -369,14 +537,17 @@ ltq_etop_mdio_probe(struct net_device *d
}
phydev = phy_connect(dev, phydev_name(phydev),
phy_attached_info(phydev);
-@@ -378,8 +563,13 @@ ltq_etop_mdio_init(struct net_device *de
+@@ -397,8 +568,13 @@ ltq_etop_mdio_init(struct net_device *de
}
priv->mii_bus->priv = dev;
+ }
priv->mii_bus->name = "ltq_mii";
snprintf(priv->mii_bus->id, MII_BUS_ID_SIZE, "%s-%x",
- priv->pdev->name, priv->pdev->id);
-@@ -416,18 +606,21 @@ static int
+ priv->pdev->name, priv->pdev->id);
+@@ -435,18 +611,21 @@ static int
ltq_etop_open(struct net_device *dev)
{
struct ltq_etop_priv *priv = netdev_priv(dev);
netif_tx_start_all_queues(dev);
return 0;
}
-@@ -436,18 +629,19 @@ static int
+@@ -455,18 +634,19 @@ static int
ltq_etop_stop(struct net_device *dev)
{
struct ltq_etop_priv *priv = netdev_priv(dev);
return 0;
}
-@@ -457,15 +651,16 @@ ltq_etop_tx(struct sk_buff *skb, struct
+@@ -476,15 +656,16 @@ 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);
netdev_err(dev, "tx ring full\n");
netif_tx_stop_queue(txq);
return NETDEV_TX_BUSY;
-@@ -473,7 +668,7 @@ ltq_etop_tx(struct sk_buff *skb, struct
+@@ -492,7 +673,7 @@ ltq_etop_tx(struct sk_buff *skb, struct
- /* dma needs to start on a 16 byte aligned address */
- byte_offset = CPHYSADDR(skb->data) % 16;
+ /* dma needs to start on a burst length value aligned address */
+ byte_offset = CPHYSADDR(skb->data) % (priv->tx_burst_len * 4);
- ch->skb[ch->dma.desc] = skb;
+ priv->txch.skb[priv->txch.dma.desc] = skb;
netif_trans_update(dev);
-@@ -483,11 +678,11 @@ ltq_etop_tx(struct sk_buff *skb, struct
+@@ -503,11 +684,11 @@ 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);
netif_tx_stop_queue(txq);
return NETDEV_TX_OK;
-@@ -498,11 +693,14 @@ ltq_etop_change_mtu(struct net_device *d
+@@ -518,11 +699,14 @@ ltq_etop_change_mtu(struct net_device *d
{
struct ltq_etop_priv *priv = netdev_priv(dev);
unsigned long flags;
spin_unlock_irqrestore(&priv->lock, flags);
return 0;
-@@ -555,6 +753,9 @@ ltq_etop_init(struct net_device *dev)
+@@ -575,6 +759,9 @@ ltq_etop_init(struct net_device *dev)
if (err)
goto err_hw;
ltq_etop_change_mtu(dev, 1500);
memcpy(&mac, &priv->pldata->mac, sizeof(struct sockaddr));
if (!is_valid_ether_addr(mac.sa_data)) {
-@@ -572,9 +773,10 @@ ltq_etop_init(struct net_device *dev)
+@@ -592,9 +779,10 @@ ltq_etop_init(struct net_device *dev)
dev->addr_assign_type = NET_ADDR_RANDOM;
ltq_etop_set_multicast_list(dev);
return 0;
err_netdev:
-@@ -594,6 +796,9 @@ ltq_etop_tx_timeout(struct net_device *d
+@@ -614,6 +802,9 @@ ltq_etop_tx_timeout(struct net_device *d
err = ltq_etop_hw_init(dev);
if (err)
goto err_hw;
netif_trans_update(dev);
netif_wake_queue(dev);
return;
-@@ -617,14 +822,18 @@ static const struct net_device_ops ltq_e
+@@ -637,14 +828,18 @@ static const struct net_device_ops ltq_e
.ndo_tx_timeout = ltq_etop_tx_timeout,
};
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res) {
-@@ -650,31 +859,62 @@ ltq_etop_probe(struct platform_device *p
+@@ -670,19 +865,55 @@ ltq_etop_probe(struct platform_device *p
goto err_out;
}
spin_lock_init(&priv->lock);
SET_NETDEV_DEV(dev, &pdev->dev);
+@@ -698,15 +929,10 @@ ltq_etop_probe(struct platform_device *p
+ goto err_free;
+ }
+
- 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);
+- netif_napi_add_weight(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);
+- netif_napi_add_weight(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);
++ netif_napi_add_weight(dev, &priv->txch.napi, ltq_etop_poll_tx, 8);
++ netif_napi_add_weight(dev, &priv->rxch.napi, ltq_etop_poll_rx, 32);
+ priv->txch.netdev = dev;
+ priv->rxch.netdev = dev;
err = register_netdev(dev);
if (err)
-@@ -703,31 +943,22 @@ ltq_etop_remove(struct platform_device *
+@@ -735,31 +961,22 @@ ltq_etop_remove(struct platform_device *
return 0;
}
},
};
--int __init
+-static int __init
-init_ltq_etop(void)
-{
- int ret = platform_driver_probe(<q_mii_driver, ltq_etop_probe);
projects / openwrt / openwrt.git / blobdiff