[ar71xx] WRT160NL: mtd parser cleanup

[openwrt.git] / target / linux / ar71xx / files / drivers / net / ag71xx / ag71xx_main.c

diff --git a/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_main.c b/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_main.c
index 58e3b11..0ba4d55 100644 (file)
--- a/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_main.c
+++ b/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_main.c
@@ -1,7 +1,7 @@
 /*
  *  Atheros AR71xx built-in ethernet mac driver
  *
 /*
  *  Atheros AR71xx built-in ethernet mac driver
  *

- *  Copyright (C) 2008 Gabor Juhos <juhosg@openwrt.org>
+ *  Copyright (C) 2008-2009 Gabor Juhos <juhosg@openwrt.org>

  *  Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
  *
  *  Based on Atheros' AG7100 driver
  *  Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
  *
  *  Based on Atheros' AG7100 driver


@@ -11,6 +11,7 @@
  *  by the Free Software Foundation.
  */
 
  *  by the Free Software Foundation.
  */
 

+#include <linux/cache.h>

 #include "ag71xx.h"
 
 #define AG71XX_DEFAULT_MSG_ENABLE      \
 #include "ag71xx.h"
 
 #define AG71XX_DEFAULT_MSG_ENABLE      \


@@ -23,10 +24,10 @@
        | NETIF_MSG_RX_ERR              \
        | NETIF_MSG_TX_ERR )
 
        | NETIF_MSG_RX_ERR              \
        | NETIF_MSG_TX_ERR )
 

-static int ag71xx_debug = -1;
+static int ag71xx_msg_level = -1;

 
 

-module_param(ag71xx_debug, int, 0);
-MODULE_PARM_DESC(ag71xx_debug, "Debug level (-1=defaults,0=none,...,16=all)");
+module_param_named(msg_level, ag71xx_msg_level, int, 0);
+MODULE_PARM_DESC(msg_level, "Message level (-1=defaults,0=none,...,16=all)");

 
 static void ag71xx_dump_dma_regs(struct ag71xx *ag)
 {
 
 static void ag71xx_dump_dma_regs(struct ag71xx *ag)
 {


@@ -85,19 +86,27 @@ static void ag71xx_ring_free(struct ag71xx_ring *ring)
 {
        kfree(ring->buf);
 
 {
        kfree(ring->buf);
 

-       if (ring->descs)
-               dma_free_coherent(NULL, ring->size * sizeof(*ring->descs),
-                                 ring->descs, ring->descs_dma);
+       if (ring->descs_cpu)
+               dma_free_coherent(NULL, ring->size * ring->desc_size,
+                                 ring->descs_cpu, ring->descs_dma);

 }
 
 static int ag71xx_ring_alloc(struct ag71xx_ring *ring, unsigned int size)
 {
        int err;
 }
 
 static int ag71xx_ring_alloc(struct ag71xx_ring *ring, unsigned int size)
 {
        int err;

+       int i;
+
+       ring->desc_size = sizeof(struct ag71xx_desc);
+       if (ring->desc_size % cache_line_size()) {
+               DBG("ag71xx: ring %p, desc size %u rounded to %u\n",
+                       ring, ring->desc_size,
+                       roundup(ring->desc_size, cache_line_size()));
+               ring->desc_size = roundup(ring->desc_size, cache_line_size());
+       }

 
 

-       ring->descs = dma_alloc_coherent(NULL, size * sizeof(*ring->descs),
-                                        &ring->descs_dma,
-                                        GFP_ATOMIC);
-       if (!ring->descs) {
+       ring->descs_cpu = dma_alloc_coherent(NULL, size * ring->desc_size,
+                                            &ring->descs_dma, GFP_ATOMIC);
+       if (!ring->descs_cpu) {

                err = -ENOMEM;
                goto err;
        }
                err = -ENOMEM;
                goto err;
        }


@@ -110,6 +119,12 @@ static int ag71xx_ring_alloc(struct ag71xx_ring *ring, unsigned int size)
                goto err;
        }
 
                goto err;
        }
 

+       for (i = 0; i < size; i++) {
+               ring->buf[i].desc = (struct ag71xx_desc *)&ring->descs_cpu[i * ring->desc_size];
+               DBG("ag71xx: ring %p, desc %d at %p\n",
+                       ring, i, ring->buf[i].desc);
+       }
+

        return 0;
 
  err:
        return 0;
 
  err:


@@ -124,8 +139,8 @@ static void ag71xx_ring_tx_clean(struct ag71xx *ag)
        while (ring->curr != ring->dirty) {
                u32 i = ring->dirty % AG71XX_TX_RING_SIZE;
 
        while (ring->curr != ring->dirty) {
                u32 i = ring->dirty % AG71XX_TX_RING_SIZE;
 

-               if (!ag71xx_desc_empty(&ring->descs[i])) {
-                       ring->descs[i].ctrl = 0;
+               if (!ag71xx_desc_empty(ring->buf[i].desc)) {
+                       ring->buf[i].desc->ctrl = 0;

                        dev->stats.tx_errors++;
                }
 
                        dev->stats.tx_errors++;
                }
 


@@ -148,10 +163,10 @@ static void ag71xx_ring_tx_init(struct ag71xx *ag)
        int i;
 
        for (i = 0; i < AG71XX_TX_RING_SIZE; i++) {
        int i;
 
        for (i = 0; i < AG71XX_TX_RING_SIZE; i++) {

-               ring->descs[i].next = (u32) (ring->descs_dma +
-                       sizeof(*ring->descs) * ((i + 1) % AG71XX_TX_RING_SIZE));
+               ring->buf[i].desc->next = (u32) (ring->descs_dma +
+                       ring->desc_size * ((i + 1) % AG71XX_TX_RING_SIZE));

 
 

-               ring->descs[i].ctrl = DESC_EMPTY;
+               ring->buf[i].desc->ctrl = DESC_EMPTY;

                ring->buf[i].skb = NULL;
        }
 
                ring->buf[i].skb = NULL;
        }
 


@@ -183,9 +198,14 @@ static int ag71xx_ring_rx_init(struct ag71xx *ag)
        int ret;
 
        ret = 0;
        int ret;
 
        ret = 0;

-       for (i = 0; i < AG71XX_RX_RING_SIZE; i++)
-               ring->descs[i].next = (u32) (ring->descs_dma +
-                       sizeof(*ring->descs) * ((i + 1) % AG71XX_RX_RING_SIZE));
+       for (i = 0; i < AG71XX_RX_RING_SIZE; i++) {
+               ring->buf[i].desc->next = (u32) (ring->descs_dma +
+                       ring->desc_size * ((i + 1) % AG71XX_RX_RING_SIZE));
+
+               DBG("ag71xx: RX desc at %p, next is %08x\n",
+                       ring->buf[i].desc,
+                       ring->buf[i].desc->next);
+       }

 
        for (i = 0; i < AG71XX_RX_RING_SIZE; i++) {
                struct sk_buff *skb;
 
        for (i = 0; i < AG71XX_RX_RING_SIZE; i++) {
                struct sk_buff *skb;


@@ -203,8 +223,8 @@ static int ag71xx_ring_rx_init(struct ag71xx *ag)
                skb_reserve(skb, AG71XX_RX_PKT_RESERVE);
 
                ring->buf[i].skb = skb;
                skb_reserve(skb, AG71XX_RX_PKT_RESERVE);
 
                ring->buf[i].skb = skb;

-               ring->descs[i].data = virt_to_phys(skb->data);
-               ring->descs[i].ctrl = DESC_EMPTY;
+               ring->buf[i].desc->data = virt_to_phys(skb->data);
+               ring->buf[i].desc->ctrl = DESC_EMPTY;

        }
 
        /* flush descriptors */
        }
 
        /* flush descriptors */


@@ -241,10 +261,10 @@ static int ag71xx_ring_rx_refill(struct ag71xx *ag)
                        skb->dev = ag->dev;
 
                        ring->buf[i].skb = skb;
                        skb->dev = ag->dev;
 
                        ring->buf[i].skb = skb;

-                       ring->descs[i].data = virt_to_phys(skb->data);
+                       ring->buf[i].desc->data = virt_to_phys(skb->data);

                }
 
                }
 

-               ring->descs[i].ctrl = DESC_EMPTY;
+               ring->buf[i].desc->ctrl = DESC_EMPTY;

                count++;
        }
 
                count++;
        }
 


@@ -457,22 +477,18 @@ static int ag71xx_stop(struct net_device *dev)
 static int ag71xx_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
 {
        struct ag71xx *ag = netdev_priv(dev);
 static int ag71xx_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
 {
        struct ag71xx *ag = netdev_priv(dev);

-       struct ag71xx_platform_data *pdata = ag71xx_get_pdata(ag);

        struct ag71xx_ring *ring = &ag->tx_ring;
        struct ag71xx_desc *desc;
        struct ag71xx_ring *ring = &ag->tx_ring;
        struct ag71xx_desc *desc;

-       unsigned long flags;

        int i;
 
        i = ring->curr % AG71XX_TX_RING_SIZE;
        int i;
 
        i = ring->curr % AG71XX_TX_RING_SIZE;

-       desc = &ring->descs[i];
-
-       spin_lock_irqsave(&ag->lock, flags);
-       pdata->ddr_flush();
-       spin_unlock_irqrestore(&ag->lock, flags);
+       desc = ring->buf[i].desc;

 
        if (!ag71xx_desc_empty(desc))
                goto err_drop;
 
 
        if (!ag71xx_desc_empty(desc))
                goto err_drop;
 

+       ag71xx_add_ar8216_header(ag, skb);
+

        if (skb->len <= 0) {
                DBG("%s: packet len is too small\n", ag->dev->name);
                goto err_drop;
        if (skb->len <= 0) {
                DBG("%s: packet len is too small\n", ag->dev->name);
                goto err_drop;


@@ -590,7 +606,7 @@ static void ag71xx_tx_packets(struct ag71xx *ag)
        sent = 0;
        while (ring->dirty != ring->curr) {
                unsigned int i = ring->dirty % AG71XX_TX_RING_SIZE;
        sent = 0;
        while (ring->dirty != ring->curr) {
                unsigned int i = ring->dirty % AG71XX_TX_RING_SIZE;

-               struct ag71xx_desc *desc = &ring->descs[i];
+               struct ag71xx_desc *desc = ring->buf[i].desc;

                struct sk_buff *skb = ring->buf[i].skb;
 
                if (!ag71xx_desc_empty(desc))
                struct sk_buff *skb = ring->buf[i].skb;
 
                if (!ag71xx_desc_empty(desc))


@@ -626,7 +642,7 @@ static int ag71xx_rx_packets(struct ag71xx *ag, int limit)
 
        while (done < limit) {
                unsigned int i = ring->curr % AG71XX_RX_RING_SIZE;
 
        while (done < limit) {
                unsigned int i = ring->curr % AG71XX_RX_RING_SIZE;

-               struct ag71xx_desc *desc = &ring->descs[i];
+               struct ag71xx_desc *desc = ring->buf[i].desc;

                struct sk_buff *skb;
                int pktlen;
 
                struct sk_buff *skb;
                int pktlen;
 


@@ -647,15 +663,20 @@ static int ag71xx_rx_packets(struct ag71xx *ag, int limit)
                skb_put(skb, pktlen);
 
                skb->dev = dev;
                skb_put(skb, pktlen);
 
                skb->dev = dev;

-               skb->protocol = eth_type_trans(skb, dev);

                skb->ip_summed = CHECKSUM_NONE;
 
                skb->ip_summed = CHECKSUM_NONE;
 

-               netif_receive_skb(skb);
-

                dev->last_rx = jiffies;
                dev->stats.rx_packets++;
                dev->stats.rx_bytes += pktlen;
 
                dev->last_rx = jiffies;
                dev->stats.rx_packets++;
                dev->stats.rx_bytes += pktlen;
 

+               if (ag71xx_remove_ar8216_header(ag, skb) != 0) {
+                       dev->stats.rx_dropped++;
+                       kfree_skb(skb);
+               } else {
+                       skb->protocol = eth_type_trans(skb, dev);
+                       netif_receive_skb(skb);
+               }
+

                ring->buf[i].skb = NULL;
                done++;
 
                ring->buf[i].skb = NULL;
                done++;
 


@@ -716,13 +737,13 @@ static int ag71xx_poll(struct napi_struct *napi, int limit)
                spin_lock_irqsave(&ag->lock, flags);
                ag71xx_int_enable(ag, AG71XX_INT_POLL);
                spin_unlock_irqrestore(&ag->lock, flags);
                spin_lock_irqsave(&ag->lock, flags);
                ag71xx_int_enable(ag, AG71XX_INT_POLL);
                spin_unlock_irqrestore(&ag->lock, flags);

-               return 0;
+               return done;

        }
 
  more:
        DBG("%s: stay in polling mode, done=%d, limit=%d\n",
                        dev->name, done, limit);
        }
 
  more:
        DBG("%s: stay in polling mode, done=%d, limit=%d\n",
                        dev->name, done, limit);

-       return 1;
+       return done;

 
  oom:
        if (netif_msg_rx_err(ag))
 
  oom:
        if (netif_msg_rx_err(ag))


@@ -797,8 +818,8 @@ static int __init ag71xx_probe(struct platform_device *pdev)
        ag = netdev_priv(dev);
        ag->pdev = pdev;
        ag->dev = dev;
        ag = netdev_priv(dev);
        ag->pdev = pdev;
        ag->dev = dev;

-       ag->mii_bus = &ag71xx_mdio_bus->mii_bus;
-       ag->msg_enable = netif_msg_init(ag71xx_debug,
+       ag->mii_bus = ag71xx_mdio_bus->mii_bus;
+       ag->msg_enable = netif_msg_init(ag71xx_msg_level,

                                        AG71XX_DEFAULT_MSG_ENABLE);
        spin_lock_init(&ag->lock);
 
                                        AG71XX_DEFAULT_MSG_ENABLE);
        spin_lock_init(&ag->lock);
 


@@ -868,16 +889,9 @@ static int __init ag71xx_probe(struct platform_device *pdev)
        ag->oom_timer.data = (unsigned long) dev;
        ag->oom_timer.function = ag71xx_oom_timer_handler;
 
        ag->oom_timer.data = (unsigned long) dev;
        ag->oom_timer.function = ag71xx_oom_timer_handler;
 

-       netif_napi_add(dev, &ag->napi, ag71xx_poll, AG71XX_NAPI_WEIGHT);
+       memcpy(dev->dev_addr, pdata->mac_addr, ETH_ALEN);

 
 

-       if (is_valid_ether_addr(pdata->mac_addr))
-               memcpy(dev->dev_addr, pdata->mac_addr, ETH_ALEN);
-       else {
-               dev->dev_addr[0] = 0xde;
-               dev->dev_addr[1] = 0xad;
-               get_random_bytes(&dev->dev_addr[2], 3);
-               dev->dev_addr[5] = pdev->id & 0xff;
-       }
+       netif_napi_add(dev, &ag->napi, ag71xx_poll, AG71XX_NAPI_WEIGHT);

 
        err = register_netdev(dev);
        if (err) {
 
        err = register_netdev(dev);
        if (err) {