[brcm47xx] fix the default network configuration for the ASUS WL-330gE (#8751)
[openwrt.git] / target / linux / adm5120 / files / drivers / net / adm5120sw.c
index 5acdf39..a926954 100644 (file)
@@ -1,52 +1,55 @@
 /*
 /*
- *     ADM5120 built in ethernet switch driver
+ *  ADM5120 built-in ethernet switch driver
  *
  *
- *     Copyright Jeroen Vreeken (pe1rxq@amsat.org), 2005
+ *  Copyright (C) 2007-2008 Gabor Juhos <juhosg@openwrt.org>
  *
  *
- *     Inspiration for this driver came from the original ADMtek 2.4
- *     driver, Copyright ADMtek Inc.
+ *  This code was based on a driver for Linux 2.6.xx by Jeroen Vreeken.
+ *    Copyright Jeroen Vreeken (pe1rxq@amsat.org), 2005
+ *  NAPI extension for the Jeroen's driver
+ *    Copyright Thomas Langer (Thomas.Langer@infineon.com), 2007
+ *    Copyright Friedrich Beckmann (Friedrich.Beckmann@infineon.com), 2007
+ *  Inspiration for the Jeroen's driver came from the ADMtek 2.4 driver.
+ *    Copyright ADMtek Inc.
  *
  *
- *     NAPI extensions by Thomas Langer (Thomas.Langer@infineon.com)
- *     and Friedrich Beckmann (Friedrich.Beckmann@infineon.com), 2007
- *
- *     TODO: Add support of high prio queues (currently disabled)
+ *  This program is free software; you can redistribute it and/or modify it
+ *  under the terms of the GNU General Public License version 2  as published
+ *  by the Free Software Foundation.
  *
  */
  *
  */
+
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/errno.h>
 #include <linux/interrupt.h>
 #include <linux/ioport.h>
 #include <linux/spinlock.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/errno.h>
 #include <linux/interrupt.h>
 #include <linux/ioport.h>
 #include <linux/spinlock.h>
+#include <linux/platform_device.h>
+#include <linux/io.h>
+#include <linux/irq.h>
 
 #include <linux/netdevice.h>
 #include <linux/etherdevice.h>
 #include <linux/skbuff.h>
 
 
 #include <linux/netdevice.h>
 #include <linux/etherdevice.h>
 #include <linux/skbuff.h>
 
-#include <linux/io.h>
-#include <linux/irq.h>
-
 #include <asm/mipsregs.h>
 
 #include <asm/mipsregs.h>
 
-#include <adm5120_info.h>
-#include <adm5120_defs.h>
-#include <adm5120_irq.h>
-#include <adm5120_switch.h>
+#include <asm/mach-adm5120/adm5120_info.h>
+#include <asm/mach-adm5120/adm5120_defs.h>
+#include <asm/mach-adm5120/adm5120_switch.h>
 
 #include "adm5120sw.h"
 
 #define DRV_NAME       "adm5120-switch"
 #define DRV_DESC       "ADM5120 built-in ethernet switch driver"
 
 #include "adm5120sw.h"
 
 #define DRV_NAME       "adm5120-switch"
 #define DRV_DESC       "ADM5120 built-in ethernet switch driver"
-#define DRV_VERSION    "0.1.0"
+#define DRV_VERSION    "0.1.1"
 
 
-MODULE_AUTHOR("Jeroen Vreeken (pe1rxq@amsat.org)");
-MODULE_DESCRIPTION("ADM5120 ethernet switch driver");
-MODULE_LICENSE("GPL");
+#define CONFIG_ADM5120_SWITCH_NAPI     1
+#undef CONFIG_ADM5120_SWITCH_DEBUG
 
 /* ------------------------------------------------------------------------ */
 
 
 /* ------------------------------------------------------------------------ */
 
-#if 1 /*def ADM5120_SWITCH_DEBUG*/
-#define SW_DBG(f, a...)                printk(KERN_DEBUG "%s: " f, DRV_NAME , ## a)
+#ifdef CONFIG_ADM5120_SWITCH_DEBUG
+#define SW_DBG(f, a...)                printk(KERN_DBG "%s: " f, DRV_NAME , ## a)
 #else
 #define SW_DBG(f, a...)                do {} while (0)
 #endif
 #else
 #define SW_DBG(f, a...)                do {} while (0)
 #endif
@@ -61,7 +64,12 @@ MODULE_LICENSE("GPL");
 
 #define TX_RING_SIZE   32
 #define TX_QUEUE_LEN   28      /* Limit ring entries actually used. */
 
 #define TX_RING_SIZE   32
 #define TX_QUEUE_LEN   28      /* Limit ring entries actually used. */
-#define TX_TIMEOUT     HZ*400
+#define TX_TIMEOUT     (HZ * 400)
+
+#define RX_DESCS_SIZE  (RX_RING_SIZE * sizeof(struct dma_desc *))
+#define RX_SKBS_SIZE   (RX_RING_SIZE * sizeof(struct sk_buff *))
+#define TX_DESCS_SIZE  (TX_RING_SIZE * sizeof(struct dma_desc *))
+#define TX_SKBS_SIZE   (TX_RING_SIZE * sizeof(struct sk_buff *))
 
 #define SKB_ALLOC_LEN          (RX_MAX_PKTLEN + 32)
 #define SKB_RESERVE_LEN                (NET_IP_ALIGN + NET_SKB_PAD)
 
 #define SKB_ALLOC_LEN          (RX_MAX_PKTLEN + 32)
 #define SKB_RESERVE_LEN                (NET_IP_ALIGN + NET_SKB_PAD)
@@ -78,10 +86,21 @@ MODULE_LICENSE("GPL");
                        SWITCH_INT_MD | SWITCH_INT_PSC)
 
 #define SWITCH_INTS_USED (SWITCH_INTS_LOW | SWITCH_INT_PSC)
                        SWITCH_INT_MD | SWITCH_INT_PSC)
 
 #define SWITCH_INTS_USED (SWITCH_INTS_LOW | SWITCH_INT_PSC)
-#define SWITCH_INTS_POLL (SWITCH_INT_RLD | SWITCH_INT_LDF)
+#define SWITCH_INTS_POLL (SWITCH_INT_RLD | SWITCH_INT_LDF | SWITCH_INT_SLD)
 
 /* ------------------------------------------------------------------------ */
 
 
 /* ------------------------------------------------------------------------ */
 
+struct adm5120_if_priv {
+       struct net_device *dev;
+
+       unsigned int    vlan_no;
+       unsigned int    port_mask;
+
+#ifdef CONFIG_ADM5120_SWITCH_NAPI
+       struct napi_struct napi;
+#endif
+};
+
 struct dma_desc {
        __u32                   buf1;
 #define DESC_OWN               (1UL << 31)     /* Owned by the switch */
 struct dma_desc {
        __u32                   buf1;
 #define DESC_OWN               (1UL << 31)     /* Owned by the switch */
@@ -112,56 +131,29 @@ struct dma_desc {
 #define DESC_TYPE_PPPoE                0x1             /* PPPoE packet */
 } __attribute__ ((aligned(16)));
 
 #define DESC_TYPE_PPPoE                0x1             /* PPPoE packet */
 } __attribute__ ((aligned(16)));
 
-static inline u32 desc_get_srcport(struct dma_desc *desc)
-{
-       return (desc->misc >> DESC_SRCPORT_SHIFT) & DESC_SRCPORT_MASK;
-}
-
-static inline u32 desc_get_pktlen(struct dma_desc *desc)
-{
-       return (desc->misc >> DESC_PKTLEN_SHIFT) & DESC_PKTLEN_MASK;
-}
-
-static inline int desc_ipcsum_fail(struct dma_desc *desc)
-{
-       return ((desc->misc & DESC_IPCSUM_FAIL) != 0);
-}
-
 /* ------------------------------------------------------------------------ */
 
 /* ------------------------------------------------------------------------ */
 
-/* default settings - unlimited TX and RX on all ports, default shaper mode */
-static unsigned char bw_matrix[SWITCH_NUM_PORTS] = {
-       0, 0, 0, 0, 0, 0
-};
-
 static int adm5120_nrdevs;
 
 static struct net_device *adm5120_devs[SWITCH_NUM_PORTS];
 /* Lookup table port -> device */
 static struct net_device *adm5120_port[SWITCH_NUM_PORTS];
 
 static int adm5120_nrdevs;
 
 static struct net_device *adm5120_devs[SWITCH_NUM_PORTS];
 /* Lookup table port -> device */
 static struct net_device *adm5120_port[SWITCH_NUM_PORTS];
 
-static struct dma_desc txh_descs_v[TX_RING_SIZE] __attribute__((aligned(16)));
-static struct dma_desc txl_descs_v[TX_RING_SIZE] __attribute__((aligned(16)));
-static struct dma_desc rxh_descs_v[RX_RING_SIZE] __attribute__((aligned(16)));
-static struct dma_desc rxl_descs_v[RX_RING_SIZE] __attribute__((aligned(16)));
-static struct dma_desc *txh_descs;
 static struct dma_desc *txl_descs;
 static struct dma_desc *txl_descs;
-static struct dma_desc *rxh_descs;
 static struct dma_desc *rxl_descs;
 
 static struct dma_desc *rxl_descs;
 
-static struct sk_buff *rxl_skbuff[RX_RING_SIZE];
-static struct sk_buff *rxh_skbuff[RX_RING_SIZE];
-static struct sk_buff *txl_skbuff[TX_RING_SIZE];
-static struct sk_buff *txh_skbuff[TX_RING_SIZE];
+static dma_addr_t txl_descs_dma;
+static dma_addr_t rxl_descs_dma;
+
+static struct sk_buff **txl_skbuff;
+static struct sk_buff **rxl_skbuff;
 
 static unsigned int cur_rxl, dirty_rxl; /* producer/consumer ring indices */
 static unsigned int cur_txl, dirty_txl;
 
 static unsigned int sw_used;
 
 
 static unsigned int cur_rxl, dirty_rxl; /* producer/consumer ring indices */
 static unsigned int cur_txl, dirty_txl;
 
 static unsigned int sw_used;
 
-static spinlock_t sw_lock = SPIN_LOCK_UNLOCKED;
-
-static struct net_device sw_dev;
+static spinlock_t tx_lock = SPIN_LOCK_UNLOCKED;
 
 /* ------------------------------------------------------------------------ */
 
 
 /* ------------------------------------------------------------------------ */
 
@@ -175,7 +167,7 @@ static inline void sw_write_reg(u32 reg, u32 val)
        __raw_writel(val, (void __iomem *)KSEG1ADDR(ADM5120_SWITCH_BASE)+reg);
 }
 
        __raw_writel(val, (void __iomem *)KSEG1ADDR(ADM5120_SWITCH_BASE)+reg);
 }
 
-static inline void sw_int_disable(u32 mask)
+static inline void sw_int_mask(u32 mask)
 {
        u32     t;
 
 {
        u32     t;
 
@@ -184,7 +176,7 @@ static inline void sw_int_disable(u32 mask)
        sw_write_reg(SWITCH_REG_INT_MASK, t);
 }
 
        sw_write_reg(SWITCH_REG_INT_MASK, t);
 }
 
-static inline void sw_int_enable(u32 mask)
+static inline void sw_int_unmask(u32 mask)
 {
        u32     t;
 
 {
        u32     t;
 
@@ -198,6 +190,30 @@ static inline void sw_int_ack(u32 mask)
        sw_write_reg(SWITCH_REG_INT_STATUS, mask);
 }
 
        sw_write_reg(SWITCH_REG_INT_STATUS, mask);
 }
 
+static inline u32 sw_int_status(void)
+{
+       u32     t;
+
+       t = sw_read_reg(SWITCH_REG_INT_STATUS);
+       t &= ~sw_read_reg(SWITCH_REG_INT_MASK);
+       return t;
+}
+
+static inline u32 desc_get_srcport(struct dma_desc *desc)
+{
+       return (desc->misc >> DESC_SRCPORT_SHIFT) & DESC_SRCPORT_MASK;
+}
+
+static inline u32 desc_get_pktlen(struct dma_desc *desc)
+{
+       return (desc->misc >> DESC_PKTLEN_SHIFT) & DESC_PKTLEN_MASK;
+}
+
+static inline int desc_ipcsum_fail(struct dma_desc *desc)
+{
+       return ((desc->misc & DESC_IPCSUM_FAIL) != 0);
+}
+
 /* ------------------------------------------------------------------------ */
 
 static void sw_dump_desc(char *label, struct dma_desc *desc, int tx)
 /* ------------------------------------------------------------------------ */
 
 static void sw_dump_desc(char *label, struct dma_desc *desc, int tx)
@@ -216,7 +232,7 @@ static void sw_dump_desc(char *label, struct dma_desc *desc, int tx)
        t = desc->buf2;
        SW_DBG("    buf2 %08X addr=%08X%s\n", desc->buf2,
                t & DESC_ADDR_MASK,
        t = desc->buf2;
        SW_DBG("    buf2 %08X addr=%08X%s\n", desc->buf2,
                t & DESC_ADDR_MASK,
-               (t & DESC_BUF2_EN) ? " EN" : "" );
+               (t & DESC_BUF2_EN) ? " EN" : "");
 
        t = desc->misc;
        if (tx)
 
        t = desc->misc;
        if (tx)
@@ -264,6 +280,63 @@ static void sw_dump_intr_mask(char *label, u32 mask)
                (mask & SWITCH_INT_CPUH) ? " CPUH" : "");
 }
 
                (mask & SWITCH_INT_CPUH) ? " CPUH" : "");
 }
 
+static void sw_dump_regs(void)
+{
+       u32 t;
+
+       t = sw_read_reg(SWITCH_REG_PHY_STATUS);
+       SW_DBG("phy_status: %08X\n", t);
+
+       t = sw_read_reg(SWITCH_REG_CPUP_CONF);
+       SW_DBG("cpup_conf: %08X%s%s%s\n", t,
+               (t & CPUP_CONF_DCPUP) ? " DCPUP" : "",
+               (t & CPUP_CONF_CRCP) ? " CRCP" : "",
+               (t & CPUP_CONF_BTM) ? " BTM" : "");
+
+       t = sw_read_reg(SWITCH_REG_PORT_CONF0);
+       SW_DBG("port_conf0: %08X\n", t);
+       t = sw_read_reg(SWITCH_REG_PORT_CONF1);
+       SW_DBG("port_conf1: %08X\n", t);
+       t = sw_read_reg(SWITCH_REG_PORT_CONF2);
+       SW_DBG("port_conf2: %08X\n", t);
+
+       t = sw_read_reg(SWITCH_REG_VLAN_G1);
+       SW_DBG("vlan g1: %08X\n", t);
+       t = sw_read_reg(SWITCH_REG_VLAN_G2);
+       SW_DBG("vlan g2: %08X\n", t);
+
+       t = sw_read_reg(SWITCH_REG_BW_CNTL0);
+       SW_DBG("bw_cntl0: %08X\n", t);
+       t = sw_read_reg(SWITCH_REG_BW_CNTL1);
+       SW_DBG("bw_cntl1: %08X\n", t);
+
+       t = sw_read_reg(SWITCH_REG_PHY_CNTL0);
+       SW_DBG("phy_cntl0: %08X\n", t);
+       t = sw_read_reg(SWITCH_REG_PHY_CNTL1);
+       SW_DBG("phy_cntl1: %08X\n", t);
+       t = sw_read_reg(SWITCH_REG_PHY_CNTL2);
+       SW_DBG("phy_cntl2: %08X\n", t);
+       t = sw_read_reg(SWITCH_REG_PHY_CNTL3);
+       SW_DBG("phy_cntl3: %08X\n", t);
+       t = sw_read_reg(SWITCH_REG_PHY_CNTL4);
+       SW_DBG("phy_cntl4: %08X\n", t);
+
+       t = sw_read_reg(SWITCH_REG_INT_STATUS);
+       sw_dump_intr_mask("int_status: ", t);
+
+       t = sw_read_reg(SWITCH_REG_INT_MASK);
+       sw_dump_intr_mask("int_mask: ", t);
+
+       t = sw_read_reg(SWITCH_REG_SHDA);
+       SW_DBG("shda: %08X\n", t);
+       t = sw_read_reg(SWITCH_REG_SLDA);
+       SW_DBG("slda: %08X\n", t);
+       t = sw_read_reg(SWITCH_REG_RHDA);
+       SW_DBG("rhda: %08X\n", t);
+       t = sw_read_reg(SWITCH_REG_RLDA);
+       SW_DBG("rlda: %08X\n", t);
+}
+
 /* ------------------------------------------------------------------------ */
 
 static inline void adm5120_rx_dma_update(struct dma_desc *desc,
 /* ------------------------------------------------------------------------ */
 
 static inline void adm5120_rx_dma_update(struct dma_desc *desc,
@@ -276,90 +349,125 @@ static inline void adm5120_rx_dma_update(struct dma_desc *desc,
                DESC_OWN | (end ? DESC_EOR : 0);
 }
 
                DESC_OWN | (end ? DESC_EOR : 0);
 }
 
-static int adm5120_switch_rx(struct net_device *dev, int *budget)
+static void adm5120_switch_rx_refill(void)
 {
 {
-       struct sk_buff *skb, *skbn;
-       struct adm5120_sw *priv;
-       struct net_device *cdev;
-       struct dma_desc *desc;
-       int len, quota;
+       unsigned int entry;
 
 
-       quota = min(dev->quota, *budget);
-       SW_DBG("%s polling, quota=%d\n", dev->name, quota);
+       for (; cur_rxl - dirty_rxl > 0; dirty_rxl++) {
+               struct dma_desc *desc;
+               struct sk_buff *skb;
 
 
-       sw_int_ack(SWITCH_INTS_POLL);
+               entry = dirty_rxl % RX_RING_SIZE;
+               desc = &rxl_descs[entry];
 
 
-       desc = &rxl_descs[cur_rxl];
-       while (!(desc->buf1 & DESC_OWN) && quota) {
-               u32 port = desc_get_srcport(desc);
-               cdev = adm5120_port[port];
-               if (cdev != dev) {      /* The current packet belongs to a different device */
-                       if ((cdev==NULL) || !netif_running(cdev)) {
-                               /* discard (update with old skb) */
-                               skb = skbn = NULL;
-                               goto rx_skip;
-                       }
-                       else {
-                               netif_rx_schedule(cdev);/* Start polling next device */
-                               return 1;       /* return 1 -> More packets to process */
+               skb = rxl_skbuff[entry];
+               if (skb == NULL) {
+                       skb = alloc_skb(SKB_ALLOC_LEN, GFP_ATOMIC);
+                       if (skb) {
+                               skb_reserve(skb, SKB_RESERVE_LEN);
+                               rxl_skbuff[entry] = skb;
+                       } else {
+                               SW_ERR("no memory for skb\n");
+                               desc->buflen = 0;
+                               desc->buf2 = 0;
+                               desc->misc = 0;
+                               desc->buf1 = (desc->buf1 & DESC_EOR) | DESC_OWN;
+                               break;
                        }
                        }
-
                }
                }
-               skb = rxl_skbuff[cur_rxl];
-               len = desc_get_pktlen(desc);
-               len -= ETH_CSUM_LEN;
 
 
-               priv = netdev_priv(dev);
-               if (len <= 0 || len > RX_MAX_PKTLEN ||
-                       desc_ipcsum_fail(desc)) {
-                       dev->stats.rx_errors++;
-                       skbn = NULL;
-               } else {
-                       skbn = dev_alloc_skb(SKB_ALLOC_LEN);
-                       if (skbn) {
-                               skb_put(skb, len);
-                               skb->dev = dev;
-                               skb->protocol = eth_type_trans(skb, dev);
-                               skb->ip_summed = CHECKSUM_UNNECESSARY;
-                               dev->last_rx = jiffies;
-                               dev->stats.rx_packets++;
-                               dev->stats.rx_bytes += len;
-                               skb_reserve(skbn, SKB_RESERVE_LEN);
-                               rxl_skbuff[cur_rxl] = skbn;
+               desc->buf2 = 0;
+               desc->buflen = RX_MAX_PKTLEN;
+               desc->misc = 0;
+               desc->buf1 = (desc->buf1 & DESC_EOR) | DESC_OWN |
+                               DESC_ADDR(skb->data);
+       }
+}
+
+static int adm5120_switch_rx(int limit)
+{
+       unsigned int done = 0;
+
+       SW_DBG("rx start, limit=%d, cur_rxl=%u, dirty_rxl=%u\n",
+                               limit, cur_rxl, dirty_rxl);
+
+       while (done < limit) {
+               int entry = cur_rxl % RX_RING_SIZE;
+               struct dma_desc *desc = &rxl_descs[entry];
+               struct net_device *rdev;
+               unsigned int port;
+
+               if (desc->buf1 & DESC_OWN)
+                       break;
+
+               if (dirty_rxl + RX_RING_SIZE == cur_rxl)
+                       break;
+
+               port = desc_get_srcport(desc);
+               rdev = adm5120_port[port];
+
+               SW_DBG("rx descriptor %u, desc=%p, skb=%p\n", entry, desc,
+                               rxl_skbuff[entry]);
+
+               if ((rdev) && netif_running(rdev)) {
+                       struct sk_buff *skb = rxl_skbuff[entry];
+                       int pktlen;
+
+                       pktlen = desc_get_pktlen(desc);
+                       pktlen -= ETH_CSUM_LEN;
+
+                       if ((pktlen == 0) || desc_ipcsum_fail(desc)) {
+                               rdev->stats.rx_errors++;
+                               if (pktlen == 0)
+                                       rdev->stats.rx_length_errors++;
+                               if (desc_ipcsum_fail(desc))
+                                       rdev->stats.rx_crc_errors++;
+                               SW_DBG("rx error, recycling skb %u\n", entry);
                        } else {
                        } else {
-                               SW_INFO("%s recycling!\n", dev->name);
+                               skb_put(skb, pktlen);
+
+                               skb->dev = rdev;
+                               skb->protocol = eth_type_trans(skb, rdev);
+                               skb->ip_summed = CHECKSUM_UNNECESSARY;
+
+                               dma_cache_wback_inv((unsigned long)skb->data,
+                                       skb->len);
+
+#ifdef CONFIG_ADM5120_SWITCH_NAPI
+                               netif_receive_skb(skb);
+#else
+                               netif_rx(skb);
+#endif
+
+                               rdev->last_rx = jiffies;
+                               rdev->stats.rx_packets++;
+                               rdev->stats.rx_bytes += pktlen;
+
+                               rxl_skbuff[entry] = NULL;
+                               done++;
                        }
                        }
+               } else {
+                       SW_DBG("no rx device, recycling skb %u\n", entry);
                }
                }
-rx_skip:
-               adm5120_rx_dma_update(&rxl_descs[cur_rxl],
-                       rxl_skbuff[cur_rxl],
-                       (RX_RING_SIZE-1==cur_rxl));
-               if (RX_RING_SIZE == ++cur_rxl)
-                       cur_rxl = 0;
-               desc = &rxl_descs[cur_rxl];
-               if (skbn){
-                       netif_receive_skb(skb);
-                       dev->quota--;
-                       (*budget)--;
-                       quota--;
-               }
-       } /* while */
 
 
-       if (quota) {
-               netif_rx_complete(dev);
-               sw_int_enable(SWITCH_INTS_POLL);
-               return 0;
+               cur_rxl++;
+               if (cur_rxl - dirty_rxl > RX_RING_SIZE / 4)
+                       adm5120_switch_rx_refill();
        }
 
        }
 
-       /* If there are still packets to process, return 1 */
-       return 1;
+       adm5120_switch_rx_refill();
+
+       SW_DBG("rx finished, cur_rxl=%u, dirty_rxl=%u, processed %d\n",
+                               cur_rxl, dirty_rxl, done);
+
+       return done;
 }
 
 static void adm5120_switch_tx(void)
 {
        unsigned int entry;
 
 }
 
 static void adm5120_switch_tx(void)
 {
        unsigned int entry;
 
-       /* find and cleanup dirty tx descriptors */
+       spin_lock(&tx_lock);
        entry = dirty_txl % TX_RING_SIZE;
        while (dirty_txl != cur_txl) {
                struct dma_desc *desc = &txl_descs[entry];
        entry = dirty_txl % TX_RING_SIZE;
        while (dirty_txl != cur_txl) {
                struct dma_desc *desc = &txl_descs[entry];
@@ -368,7 +476,6 @@ static void adm5120_switch_tx(void)
                if (desc->buf1 & DESC_OWN)
                        break;
 
                if (desc->buf1 & DESC_OWN)
                        break;
 
-               sw_dump_desc("tx done", desc, 1);
                if (netif_running(skb->dev)) {
                        skb->dev->stats.tx_bytes += skb->len;
                        skb->dev->stats.tx_packets++;
                if (netif_running(skb->dev)) {
                        skb->dev->stats.tx_bytes += skb->len;
                        skb->dev->stats.tx_packets++;
@@ -380,7 +487,6 @@ static void adm5120_switch_tx(void)
        }
 
        if ((cur_txl - dirty_txl) < TX_QUEUE_LEN - 4) {
        }
 
        if ((cur_txl - dirty_txl) < TX_QUEUE_LEN - 4) {
-               /* wake up queue of all devices */
                int i;
                for (i = 0; i < SWITCH_NUM_PORTS; i++) {
                        if (!adm5120_devs[i])
                int i;
                for (i = 0; i < SWITCH_NUM_PORTS; i++) {
                        if (!adm5120_devs[i])
@@ -388,52 +494,235 @@ static void adm5120_switch_tx(void)
                        netif_wake_queue(adm5120_devs[i]);
                }
        }
                        netif_wake_queue(adm5120_devs[i]);
                }
        }
+       spin_unlock(&tx_lock);
 }
 
 }
 
-static irqreturn_t adm5120_poll_irq(int irq, void *dev_id)
+#ifdef CONFIG_ADM5120_SWITCH_NAPI
+static int adm5120_if_poll(struct napi_struct *napi, int limit)
 {
 {
-       struct net_device *dev = dev_id;
+       struct adm5120_if_priv *priv = container_of(napi,
+                               struct adm5120_if_priv, napi);
+       struct net_device *dev = priv->dev;
+       int done;
        u32 status;
 
        u32 status;
 
-       status = sw_read_reg(SWITCH_REG_INT_STATUS);
-       status &= ~(sw_read_reg(SWITCH_REG_INT_MASK));
+       sw_int_ack(SWITCH_INTS_POLL);
 
 
-       status &= SWITCH_INTS_POLL;
-       if (!status)
-               return IRQ_NONE;
+       SW_DBG("%s: processing TX ring\n", dev->name);
+       adm5120_switch_tx();
 
 
-       sw_int_disable(SWITCH_INTS_POLL);
-       netif_rx_schedule(dev);
+       SW_DBG("%s: processing RX ring\n", dev->name);
+       done = adm5120_switch_rx(limit);
 
 
-       SW_DBG("%s handling IRQ%d\n", dev->name, irq);
-       return IRQ_HANDLED;
+       status = sw_int_status() & SWITCH_INTS_POLL;
+       if ((done < limit) && (!status)) {
+               SW_DBG("disable polling mode for %s\n", dev->name);
+               napi_complete(napi);
+               sw_int_unmask(SWITCH_INTS_POLL);
+               return 0;
+       }
+
+       SW_DBG("%s still in polling mode, done=%d, status=%x\n",
+                       dev->name, done, status);
+       return 1;
 }
 }
+#endif /* CONFIG_ADM5120_SWITCH_NAPI */
+
 
 static irqreturn_t adm5120_switch_irq(int irq, void *dev_id)
 {
 
 static irqreturn_t adm5120_switch_irq(int irq, void *dev_id)
 {
-       irqreturn_t ret;
        u32 status;
 
        u32 status;
 
-       status = sw_read_reg(SWITCH_REG_INT_STATUS);
-       status &= ~(sw_read_reg(SWITCH_REG_INT_MASK));
-
-       sw_dump_intr_mask("sw irq", status);
-
-       status &= SWITCH_INTS_ALL & ~SWITCH_INTS_POLL;
+       status = sw_int_status();
+       status &= SWITCH_INTS_ALL;
        if (!status)
                return IRQ_NONE;
 
        if (!status)
                return IRQ_NONE;
 
+#ifdef CONFIG_ADM5120_SWITCH_NAPI
+       sw_int_ack(status & ~SWITCH_INTS_POLL);
+
+       if (status & SWITCH_INTS_POLL) {
+               struct net_device *dev = dev_id;
+               struct adm5120_if_priv *priv = netdev_priv(dev);
+
+               sw_dump_intr_mask("poll ints", status);
+               SW_DBG("enable polling mode for %s\n", dev->name);
+               sw_int_mask(SWITCH_INTS_POLL);
+               napi_schedule(&priv->napi);
+       }
+#else
        sw_int_ack(status);
 
        sw_int_ack(status);
 
-       if (status & SWITCH_INT_SLD) {
-               spin_lock(&sw_lock);
+       if (status & (SWITCH_INT_RLD | SWITCH_INT_LDF))
+               adm5120_switch_rx(RX_RING_SIZE);
+
+       if (status & SWITCH_INT_SLD)
                adm5120_switch_tx();
                adm5120_switch_tx();
-               spin_unlock(&sw_lock);
-       }
+#endif
 
        return IRQ_HANDLED;
 }
 
 
        return IRQ_HANDLED;
 }
 
+static void adm5120_set_bw(char *matrix)
+{
+       unsigned long val;
+
+       /* Port 0 to 3 are set using the bandwidth control 0 register */
+       val = matrix[0] + (matrix[1]<<8) + (matrix[2]<<16) + (matrix[3]<<24);
+       sw_write_reg(SWITCH_REG_BW_CNTL0, val);
+
+       /* Port 4 and 5 are set using the bandwidth control 1 register */
+       val = matrix[4];
+       if (matrix[5] == 1)
+               sw_write_reg(SWITCH_REG_BW_CNTL1, val | 0x80000000);
+       else
+               sw_write_reg(SWITCH_REG_BW_CNTL1, val & ~0x8000000);
+
+       SW_DBG("D: ctl0 0x%ux, ctl1 0x%ux\n", sw_read_reg(SWITCH_REG_BW_CNTL0),
+               sw_read_reg(SWITCH_REG_BW_CNTL1));
+}
+
+static void adm5120_switch_tx_ring_reset(struct dma_desc *desc,
+               struct sk_buff **skbl, int num)
+{
+       memset(desc, 0, num * sizeof(*desc));
+       desc[num-1].buf1 |= DESC_EOR;
+       memset(skbl, 0, sizeof(struct skb *) * num);
+
+       cur_txl = 0;
+       dirty_txl = 0;
+}
+
+static void adm5120_switch_rx_ring_reset(struct dma_desc *desc,
+               struct sk_buff **skbl, int num)
+{
+       int i;
+
+       memset(desc, 0, num * sizeof(*desc));
+       for (i = 0; i < num; i++) {
+               skbl[i] = dev_alloc_skb(SKB_ALLOC_LEN);
+               if (!skbl[i]) {
+                       i = num;
+                       break;
+               }
+               skb_reserve(skbl[i], SKB_RESERVE_LEN);
+               adm5120_rx_dma_update(&desc[i], skbl[i], (num - 1 == i));
+       }
+
+       cur_rxl = 0;
+       dirty_rxl = 0;
+}
+
+static int adm5120_switch_tx_ring_alloc(void)
+{
+       int err;
+
+       txl_descs = dma_alloc_coherent(NULL, TX_DESCS_SIZE, &txl_descs_dma,
+                                       GFP_ATOMIC);
+       if (!txl_descs) {
+               err = -ENOMEM;
+               goto err;
+       }
+
+       txl_skbuff = kzalloc(TX_SKBS_SIZE, GFP_KERNEL);
+       if (!txl_skbuff) {
+               err = -ENOMEM;
+               goto err;
+       }
+
+       return 0;
+
+err:
+       return err;
+}
+
+static void adm5120_switch_tx_ring_free(void)
+{
+       int i;
+
+       if (txl_skbuff) {
+               for (i = 0; i < TX_RING_SIZE; i++)
+                       if (txl_skbuff[i])
+                               kfree_skb(txl_skbuff[i]);
+               kfree(txl_skbuff);
+       }
+
+       if (txl_descs)
+               dma_free_coherent(NULL, TX_DESCS_SIZE, txl_descs,
+                       txl_descs_dma);
+}
+
+static int adm5120_switch_rx_ring_alloc(void)
+{
+       int err;
+       int i;
+
+       /* init RX ring */
+       rxl_descs = dma_alloc_coherent(NULL, RX_DESCS_SIZE, &rxl_descs_dma,
+                                       GFP_ATOMIC);
+       if (!rxl_descs) {
+               err = -ENOMEM;
+               goto err;
+       }
+
+       rxl_skbuff = kzalloc(RX_SKBS_SIZE, GFP_KERNEL);
+       if (!rxl_skbuff) {
+               err = -ENOMEM;
+               goto err;
+       }
+
+       for (i = 0; i < RX_RING_SIZE; i++) {
+               struct sk_buff *skb;
+               skb = alloc_skb(SKB_ALLOC_LEN, GFP_ATOMIC);
+               if (!skb) {
+                       err = -ENOMEM;
+                       goto err;
+               }
+               rxl_skbuff[i] = skb;
+               skb_reserve(skb, SKB_RESERVE_LEN);
+       }
+
+       return 0;
+
+err:
+       return err;
+}
+
+static void adm5120_switch_rx_ring_free(void)
+{
+       int i;
+
+       if (rxl_skbuff) {
+               for (i = 0; i < RX_RING_SIZE; i++)
+                       if (rxl_skbuff[i])
+                               kfree_skb(rxl_skbuff[i]);
+               kfree(rxl_skbuff);
+       }
+
+       if (rxl_descs)
+               dma_free_coherent(NULL, RX_DESCS_SIZE, rxl_descs,
+                       rxl_descs_dma);
+}
+
+static void adm5120_write_mac(struct net_device *dev)
+{
+       struct adm5120_if_priv *priv = netdev_priv(dev);
+       unsigned char *mac = dev->dev_addr;
+       u32 t;
+
+       t = mac[2] | (mac[3] << MAC_WT1_MAC3_SHIFT) |
+               (mac[4] << MAC_WT1_MAC4_SHIFT) | (mac[5] << MAC_WT1_MAC5_SHIFT);
+       sw_write_reg(SWITCH_REG_MAC_WT1, t);
+
+       t = (mac[0] << MAC_WT0_MAC0_SHIFT) | (mac[1] << MAC_WT0_MAC1_SHIFT) |
+               MAC_WT0_MAWC | MAC_WT0_WVE | (priv->vlan_no<<3);
+
+       sw_write_reg(SWITCH_REG_MAC_WT0, t);
+
+       while (!(sw_read_reg(SWITCH_REG_MAC_WT0) & MAC_WT0_MWD))
+               ;
+}
+
 static void adm5120_set_vlan(char *matrix)
 {
        unsigned long val;
 static void adm5120_set_vlan(char *matrix)
 {
        unsigned long val;
@@ -445,43 +734,90 @@ static void adm5120_set_vlan(char *matrix)
        sw_write_reg(SWITCH_REG_VLAN_G2, val);
 
        /* Now set/update the port vs. device lookup table */
        sw_write_reg(SWITCH_REG_VLAN_G2, val);
 
        /* Now set/update the port vs. device lookup table */
-       for (port=0; port<SWITCH_NUM_PORTS; port++) {
-               for (vlan_port=0; vlan_port<SWITCH_NUM_PORTS && !(matrix[vlan_port] & (0x00000001 << port)); vlan_port++);
-               if (vlan_port <SWITCH_NUM_PORTS)
+       for (port = 0; port < SWITCH_NUM_PORTS; port++) {
+               for (vlan_port = 0; vlan_port < SWITCH_NUM_PORTS && !(matrix[vlan_port] & (0x00000001 << port)); vlan_port++)
+                       ;
+               if (vlan_port < SWITCH_NUM_PORTS)
                        adm5120_port[port] = adm5120_devs[vlan_port];
                else
                        adm5120_port[port] = NULL;
        }
 }
 
                        adm5120_port[port] = adm5120_devs[vlan_port];
                else
                        adm5120_port[port] = NULL;
        }
 }
 
-static void adm5120_set_bw(char *matrix)
+static void adm5120_switch_set_vlan_mac(unsigned int vlan, unsigned char *mac)
 {
 {
-       unsigned long val;
+       u32 t;
 
 
-       /* Port 0 to 3 are set using the bandwidth control 0 register */
-       val = matrix[0] + (matrix[1]<<8) + (matrix[2]<<16) + (matrix[3]<<24);
-       sw_write_reg(SWITCH_REG_BW_CNTL0, val);
+       t = mac[2] | (mac[3] << MAC_WT1_MAC3_SHIFT)
+               | (mac[4] << MAC_WT1_MAC4_SHIFT)
+               | (mac[5] << MAC_WT1_MAC5_SHIFT);
+       sw_write_reg(SWITCH_REG_MAC_WT1, t);
 
 
-       /* Port 4 and 5 are set using the bandwidth control 1 register */
-       val = matrix[4];
-       if (matrix[5] == 1)
-               sw_write_reg(SWITCH_REG_BW_CNTL1, val | 0x80000000);
-       else
-               sw_write_reg(SWITCH_REG_BW_CNTL1, val & ~0x8000000);
+       t = (mac[0] << MAC_WT0_MAC0_SHIFT) | (mac[1] << MAC_WT0_MAC1_SHIFT) |
+               MAC_WT0_MAWC | MAC_WT0_WVE | (vlan << MAC_WT0_WVN_SHIFT) |
+               (MAC_WT0_WAF_STATIC << MAC_WT0_WAF_SHIFT);
+       sw_write_reg(SWITCH_REG_MAC_WT0, t);
 
 
-       SW_DBG("D: ctl0 0x%ux, ctl1 0x%ux\n", sw_read_reg(SWITCH_REG_BW_CNTL0),
-               sw_read_reg(SWITCH_REG_BW_CNTL1));
+       do {
+               t = sw_read_reg(SWITCH_REG_MAC_WT0);
+       } while ((t & MAC_WT0_MWD) == 0);
 }
 
 }
 
-static int adm5120_switch_open(struct net_device *dev)
+static void adm5120_switch_set_vlan_ports(unsigned int vlan, u32 ports)
 {
 {
+       unsigned int reg;
        u32 t;
        u32 t;
+
+       if (vlan < 4)
+               reg = SWITCH_REG_VLAN_G1;
+       else {
+               vlan -= 4;
+               reg = SWITCH_REG_VLAN_G2;
+       }
+
+       t = sw_read_reg(reg);
+       t &= ~(0xFF << (vlan*8));
+       t |= (ports << (vlan*8));
+       sw_write_reg(reg, t);
+}
+
+/* ------------------------------------------------------------------------ */
+
+#ifdef CONFIG_ADM5120_SWITCH_NAPI
+static inline void adm5120_if_napi_enable(struct net_device *dev)
+{
+       struct adm5120_if_priv *priv = netdev_priv(dev);
+       napi_enable(&priv->napi);
+}
+
+static inline void adm5120_if_napi_disable(struct net_device *dev)
+{
+       struct adm5120_if_priv *priv = netdev_priv(dev);
+       napi_disable(&priv->napi);
+}
+#else
+static inline void adm5120_if_napi_enable(struct net_device *dev) {}
+static inline void adm5120_if_napi_disable(struct net_device *dev) {}
+#endif /* CONFIG_ADM5120_SWITCH_NAPI */
+
+static int adm5120_if_open(struct net_device *dev)
+{
+       u32 t;
+       int err;
        int i;
 
        int i;
 
-       netif_start_queue(dev);
+       adm5120_if_napi_enable(dev);
+
+       err = request_irq(dev->irq, adm5120_switch_irq, IRQF_SHARED,
+                         dev->name, dev);
+       if (err) {
+               SW_ERR("unable to get irq for %s\n", dev->name);
+               goto err;
+       }
+
        if (!sw_used++)
                /* enable interrupts on first open */
        if (!sw_used++)
                /* enable interrupts on first open */
-               sw_int_enable(SWITCH_INTS_USED);
+               sw_int_unmask(SWITCH_INTS_USED);
 
        /* enable (additional) port */
        t = sw_read_reg(SWITCH_REG_PORT_CONF0);
 
        /* enable (additional) port */
        t = sw_read_reg(SWITCH_REG_PORT_CONF0);
@@ -491,16 +827,22 @@ static int adm5120_switch_open(struct net_device *dev)
        }
        sw_write_reg(SWITCH_REG_PORT_CONF0, t);
 
        }
        sw_write_reg(SWITCH_REG_PORT_CONF0, t);
 
+       netif_start_queue(dev);
+
        return 0;
        return 0;
+
+err:
+       adm5120_if_napi_disable(dev);
+       return err;
 }
 
 }
 
-static int adm5120_switch_stop(struct net_device *dev)
+static int adm5120_if_stop(struct net_device *dev)
 {
        u32 t;
        int i;
 
 {
        u32 t;
        int i;
 
-       if (!--sw_used)
-               sw_int_disable(SWITCH_INTS_USED);
+       netif_stop_queue(dev);
+       adm5120_if_napi_disable(dev);
 
        /* disable port if not assigned to other devices */
        t = sw_read_reg(SWITCH_REG_PORT_CONF0);
 
        /* disable port if not assigned to other devices */
        t = sw_read_reg(SWITCH_REG_PORT_CONF0);
@@ -511,16 +853,25 @@ static int adm5120_switch_stop(struct net_device *dev)
        }
        sw_write_reg(SWITCH_REG_PORT_CONF0, t);
 
        }
        sw_write_reg(SWITCH_REG_PORT_CONF0, t);
 
-       netif_stop_queue(dev);
+       if (!--sw_used)
+               sw_int_mask(SWITCH_INTS_USED);
+
+       free_irq(dev->irq, dev);
+
        return 0;
 }
 
        return 0;
 }
 
-static int adm5120_sw_start_xmit(struct sk_buff *skb, struct net_device *dev)
+static int adm5120_if_hard_start_xmit(struct sk_buff *skb,
+               struct net_device *dev)
 {
        struct dma_desc *desc;
 {
        struct dma_desc *desc;
-       struct adm5120_sw *priv = netdev_priv(dev);
+       struct adm5120_if_priv *priv = netdev_priv(dev);
        unsigned int entry;
        unsigned long data;
        unsigned int entry;
        unsigned long data;
+       int i;
+
+       /* lock switch irq */
+       spin_lock_irq(&tx_lock);
 
        /* calculate the next TX descriptor entry. */
        entry = cur_txl % TX_RING_SIZE;
 
        /* calculate the next TX descriptor entry. */
        entry = cur_txl % TX_RING_SIZE;
@@ -529,6 +880,7 @@ static int adm5120_sw_start_xmit(struct sk_buff *skb, struct net_device *dev)
        if (desc->buf1 & DESC_OWN) {
                /* We want to write a packet but the TX queue is still
                 * occupied by the DMA. We are faster than the DMA... */
        if (desc->buf1 & DESC_OWN) {
                /* We want to write a packet but the TX queue is still
                 * occupied by the DMA. We are faster than the DMA... */
+               SW_DBG("%s unable to transmit, packet dopped\n", dev->name);
                dev_kfree_skb(skb);
                dev->stats.tx_dropped++;
                return 0;
                dev_kfree_skb(skb);
                dev->stats.tx_dropped++;
                return 0;
@@ -539,42 +891,42 @@ static int adm5120_sw_start_xmit(struct sk_buff *skb, struct net_device *dev)
        data |= DESC_ADDR(skb->data);
 
        desc->misc =
        data |= DESC_ADDR(skb->data);
 
        desc->misc =
-           ((skb->len<ETH_ZLEN?ETH_ZLEN:skb->len) << DESC_PKTLEN_SHIFT) |
-           (0x1 << priv->port);
+           ((skb->len < ETH_ZLEN ? ETH_ZLEN : skb->len) << DESC_PKTLEN_SHIFT) |
+           (0x1 << priv->vlan_no);
 
        desc->buflen = skb->len < ETH_ZLEN ? ETH_ZLEN : skb->len;
 
 
        desc->buflen = skb->len < ETH_ZLEN ? ETH_ZLEN : skb->len;
 
-       /* lock switch irq */
-       spin_lock_irq(&sw_lock);
-
        desc->buf1 = data | DESC_OWN;
        sw_write_reg(SWITCH_REG_SEND_TRIG, SEND_TRIG_STL);
 
        cur_txl++;
        if (cur_txl == dirty_txl + TX_QUEUE_LEN) {
        desc->buf1 = data | DESC_OWN;
        sw_write_reg(SWITCH_REG_SEND_TRIG, SEND_TRIG_STL);
 
        cur_txl++;
        if (cur_txl == dirty_txl + TX_QUEUE_LEN) {
-               /* FIXME: stop queue for all devices */
-               netif_stop_queue(dev);
+               for (i = 0; i < SWITCH_NUM_PORTS; i++) {
+                       if (!adm5120_devs[i])
+                               continue;
+                       netif_stop_queue(adm5120_devs[i]);
+               }
        }
 
        dev->trans_start = jiffies;
 
        }
 
        dev->trans_start = jiffies;
 
-       spin_unlock_irq(&sw_lock);
+       spin_unlock_irq(&tx_lock);
 
        return 0;
 }
 
 
        return 0;
 }
 
-static void adm5120_tx_timeout(struct net_device *dev)
+static void adm5120_if_tx_timeout(struct net_device *dev)
 {
 {
-       SW_INFO("TX timeout on %s\n",dev->name);
+       SW_INFO("TX timeout on %s\n", dev->name);
 }
 
 }
 
-static void adm5120_set_multicast_list(struct net_device *dev)
+static void adm5120_if_set_multicast_list(struct net_device *dev)
 {
 {
-       struct adm5120_sw *priv = netdev_priv(dev);
+       struct adm5120_if_priv *priv = netdev_priv(dev);
        u32 ports;
        u32 t;
 
        u32 ports;
        u32 t;
 
-       ports = adm5120_eth_vlans[priv->port] & SWITCH_PORTS_NOCPU;
+       ports = adm5120_eth_vlans[priv->vlan_no] & SWITCH_PORTS_NOCPU;
 
        t = sw_read_reg(SWITCH_REG_CPUP_CONF);
        if (dev->flags & IFF_PROMISC)
 
        t = sw_read_reg(SWITCH_REG_CPUP_CONF);
        if (dev->flags & IFF_PROMISC)
@@ -610,53 +962,39 @@ static void adm5120_set_multicast_list(struct net_device *dev)
        /* to the CPU, the Bridge Test Mode has to be activated.               */
 
        /* Check if there is any vlan in promisc mode. */
        /* to the CPU, the Bridge Test Mode has to be activated.               */
 
        /* Check if there is any vlan in promisc mode. */
-       if (t & (SWITCH_PORTS_NOCPU << CPUP_CONF_DUNP_SHIFT))
-               t &= ~CPUP_CONF_BTM; /* Disable Bridge Testing Mode */
-       else
+       if (~t & (SWITCH_PORTS_NOCPU << CPUP_CONF_DUNP_SHIFT))
                t |= CPUP_CONF_BTM;  /* Enable Bridge Testing Mode */
                t |= CPUP_CONF_BTM;  /* Enable Bridge Testing Mode */
+       else
+               t &= ~CPUP_CONF_BTM; /* Disable Bridge Testing Mode */
 
        sw_write_reg(SWITCH_REG_CPUP_CONF, t);
 
 }
 
 
        sw_write_reg(SWITCH_REG_CPUP_CONF, t);
 
 }
 
-static void adm5120_write_mac(struct net_device *dev)
+static int adm5120_if_set_mac_address(struct net_device *dev, void *p)
 {
 {
-       struct adm5120_sw *priv = netdev_priv(dev);
-       unsigned char *mac = dev->dev_addr;
-       u32 t;
-
-       t = mac[2] | (mac[3] << MAC_WT1_MAC3_SHIFT) |
-               (mac[4] << MAC_WT1_MAC4_SHIFT) | (mac[5] << MAC_WT1_MAC4_SHIFT);
-       sw_write_reg(SWITCH_REG_MAC_WT1, t);
-
-       t = (mac[0] << MAC_WT0_MAC0_SHIFT) | (mac[1] << MAC_WT0_MAC1_SHIFT) |
-               MAC_WT0_MAWC | MAC_WT0_WVE | (priv->port<<3);
+       int ret;
 
 
-       sw_write_reg(SWITCH_REG_MAC_WT0, t);
-
-       while (!(sw_read_reg(SWITCH_REG_MAC_WT0) & MAC_WT0_MWD));
-}
-
-static int adm5120_sw_set_mac_address(struct net_device *dev, void *p)
-{
-       struct sockaddr *addr = p;
+       ret = eth_mac_addr(dev, p);
+       if (ret)
+               return ret;
 
 
-       memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
        adm5120_write_mac(dev);
        return 0;
 }
 
        adm5120_write_mac(dev);
        return 0;
 }
 
-static int adm5120_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
+static int adm5120_if_do_ioctl(struct net_device *dev, struct ifreq *rq,
+               int cmd)
 {
        int err;
        struct adm5120_sw_info info;
 {
        int err;
        struct adm5120_sw_info info;
-       struct adm5120_sw *priv = netdev_priv(dev);
+       struct adm5120_if_priv *priv = netdev_priv(dev);
 
 
-       switch(cmd) {
+       switch (cmd) {
        case SIOCGADMINFO:
                info.magic = 0x5120;
                info.ports = adm5120_nrdevs;
        case SIOCGADMINFO:
                info.magic = 0x5120;
                info.ports = adm5120_nrdevs;
-               info.vlan = priv->port;
+               info.vlan = priv->vlan_no;
                err = copy_to_user(rq->ifr_data, &info, sizeof(info));
                if (err)
                        return -EFAULT;
                err = copy_to_user(rq->ifr_data, &info, sizeof(info));
                if (err)
                        return -EFAULT;
@@ -676,61 +1014,73 @@ static int adm5120_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
                if (err)
                        return -EFAULT;
                break;
                if (err)
                        return -EFAULT;
                break;
-       case SIOCGETBW:
-               err = copy_to_user(rq->ifr_data, bw_matrix, sizeof(bw_matrix));
-               if (err)
-                       return -EFAULT;
-               break;
-       case SIOCSETBW:
-               if (!capable(CAP_NET_ADMIN))
-                       return -EPERM;
-               err = copy_from_user(bw_matrix, rq->ifr_data, sizeof(bw_matrix));
-               if (err)
-                       return -EFAULT;
-               adm5120_set_bw(bw_matrix);
-               break;
        default:
                return -EOPNOTSUPP;
        }
        return 0;
 }
 
        default:
                return -EOPNOTSUPP;
        }
        return 0;
 }
 
-static void adm5120_dma_tx_init(struct dma_desc *desc, struct sk_buff **skbl,
-               int num)
+static const struct net_device_ops adm5120sw_netdev_ops = {
+       .ndo_open               = adm5120_if_open,
+       .ndo_stop               = adm5120_if_stop,
+       .ndo_start_xmit         = adm5120_if_hard_start_xmit,
+       .ndo_set_multicast_list = adm5120_if_set_multicast_list,
+       .ndo_do_ioctl           = adm5120_if_do_ioctl,
+       .ndo_tx_timeout         = adm5120_if_tx_timeout,
+       .ndo_validate_addr      = eth_validate_addr,
+       .ndo_change_mtu         = eth_change_mtu,
+       .ndo_set_mac_address    = adm5120_if_set_mac_address,
+};
+
+static struct net_device *adm5120_if_alloc(void)
 {
 {
-       memset(desc, 0, num * sizeof(*desc));
-       desc[num-1].buf1 |= DESC_EOR;
-       memset(skbl, 0, sizeof(struct skb*)*num);
+       struct net_device *dev;
+       struct adm5120_if_priv *priv;
+
+       dev = alloc_etherdev(sizeof(*priv));
+       if (!dev)
+               return NULL;
+
+       priv = netdev_priv(dev);
+       priv->dev = dev;
+
+       dev->irq                = ADM5120_IRQ_SWITCH;
+       dev->netdev_ops         = &adm5120sw_netdev_ops;
+       dev->watchdog_timeo     = TX_TIMEOUT;
+
+#ifdef CONFIG_ADM5120_SWITCH_NAPI
+       netif_napi_add(dev, &priv->napi, adm5120_if_poll, 64);
+#endif
+
+       return dev;
 }
 
 }
 
-static void adm5120_dma_rx_init(struct dma_desc *desc, struct sk_buff **skbl,
-               int num)
+/* ------------------------------------------------------------------------ */
+
+static void adm5120_switch_cleanup(void)
 {
        int i;
 
 {
        int i;
 
-       memset(desc, 0, num * sizeof(*desc));
-       for (i=0; i<num; i++) {
-               skbl[i] = dev_alloc_skb(SKB_ALLOC_LEN);
-               if (!skbl[i]) {
-                       i=num;
-                       break;
+       /* disable interrupts */
+       sw_int_mask(SWITCH_INTS_ALL);
+
+       for (i = 0; i < SWITCH_NUM_PORTS; i++) {
+               struct net_device *dev = adm5120_devs[i];
+               if (dev) {
+                       unregister_netdev(dev);
+                       free_netdev(dev);
                }
                }
-               skb_reserve(skbl[i], SKB_RESERVE_LEN);
-               adm5120_rx_dma_update(&desc[i], skbl[i], (num-1==i));
        }
        }
+
+       adm5120_switch_tx_ring_free();
+       adm5120_switch_rx_ring_free();
 }
 
 }
 
-static int __init adm5120_sw_init(void)
+static int __init adm5120_switch_probe(struct platform_device *pdev)
 {
 {
-       struct net_device *dev;
        u32 t;
        int i, err;
 
        u32 t;
        int i, err;
 
-       err = request_irq(ADM5120_IRQ_SWITCH, adm5120_switch_irq,
-               (IRQF_SHARED | IRQF_DISABLED), "switch", &sw_dev);
-       if (err)
-               goto out;
-
        adm5120_nrdevs = adm5120_eth_num_ports;
 
        t = CPUP_CONF_DCPUP | CPUP_CONF_CRCP |
        adm5120_nrdevs = adm5120_eth_num_ports;
 
        t = CPUP_CONF_DCPUP | CPUP_CONF_CRCP |
@@ -750,7 +1100,7 @@ static int __init adm5120_sw_init(void)
                (SWITCH_PORTS_PHY << PHY_CNTL2_PHYR_SHIFT) |
                (SWITCH_PORTS_PHY << PHY_CNTL2_AMDIX_SHIFT) |
                PHY_CNTL2_RMAE;
                (SWITCH_PORTS_PHY << PHY_CNTL2_PHYR_SHIFT) |
                (SWITCH_PORTS_PHY << PHY_CNTL2_AMDIX_SHIFT) |
                PHY_CNTL2_RMAE;
-       SW_WRITE_REG(PHY_CNTL2, t);
+       sw_write_reg(SWITCH_REG_PHY_CNTL2, t);
 
        t = sw_read_reg(SWITCH_REG_PHY_CNTL3);
        t |= PHY_CNTL3_RNT;
 
        t = sw_read_reg(SWITCH_REG_PHY_CNTL3);
        t |= PHY_CNTL3_RNT;
@@ -759,67 +1109,52 @@ static int __init adm5120_sw_init(void)
        /* Force all the packets from all ports are low priority */
        sw_write_reg(SWITCH_REG_PRI_CNTL, 0);
 
        /* Force all the packets from all ports are low priority */
        sw_write_reg(SWITCH_REG_PRI_CNTL, 0);
 
-       sw_int_disable(SWITCH_INTS_ALL);
+       sw_int_mask(SWITCH_INTS_ALL);
        sw_int_ack(SWITCH_INTS_ALL);
 
        sw_int_ack(SWITCH_INTS_ALL);
 
-       cur_txl = dirty_txl = 0;
-       cur_rxl = dirty_rxl = 0;
+       err = adm5120_switch_rx_ring_alloc();
+       if (err)
+               goto err;
+
+       err = adm5120_switch_tx_ring_alloc();
+       if (err)
+               goto err;
 
 
-       txh_descs = (void *)KSEG1ADDR((u32)txh_descs_v);
-       txl_descs = (void *)KSEG1ADDR((u32)txl_descs_v);
-       rxh_descs = (void *)KSEG1ADDR((u32)rxh_descs_v);
-       rxl_descs = (void *)KSEG1ADDR((u32)rxl_descs_v);
+       adm5120_switch_tx_ring_reset(txl_descs, txl_skbuff, TX_RING_SIZE);
+       adm5120_switch_rx_ring_reset(rxl_descs, rxl_skbuff, RX_RING_SIZE);
 
 
-       adm5120_dma_tx_init(txh_descs, txh_skbuff, TX_RING_SIZE);
-       adm5120_dma_tx_init(txl_descs, txl_skbuff, TX_RING_SIZE);
-       adm5120_dma_rx_init(rxh_descs, rxh_skbuff, RX_RING_SIZE);
-       adm5120_dma_rx_init(rxl_descs, rxl_skbuff, RX_RING_SIZE);
-       sw_write_reg(SWITCH_REG_SHDA, KSEG1ADDR(txh_descs));
+       sw_write_reg(SWITCH_REG_SHDA, 0);
        sw_write_reg(SWITCH_REG_SLDA, KSEG1ADDR(txl_descs));
        sw_write_reg(SWITCH_REG_SLDA, KSEG1ADDR(txl_descs));
-       sw_write_reg(SWITCH_REG_RHDA, KSEG1ADDR(rxh_descs));
+       sw_write_reg(SWITCH_REG_RHDA, 0);
        sw_write_reg(SWITCH_REG_RLDA, KSEG1ADDR(rxl_descs));
 
        for (i = 0; i < SWITCH_NUM_PORTS; i++) {
        sw_write_reg(SWITCH_REG_RLDA, KSEG1ADDR(rxl_descs));
 
        for (i = 0; i < SWITCH_NUM_PORTS; i++) {
-               adm5120_devs[i] = alloc_etherdev(sizeof(struct adm5120_sw));
-               if (!adm5120_devs[i]) {
+               struct net_device *dev;
+               struct adm5120_if_priv *priv;
+
+               dev = adm5120_if_alloc();
+               if (!dev) {
                        err = -ENOMEM;
                        err = -ENOMEM;
-                       goto out_int;
+                       goto err;
                }
 
                }
 
-               dev = adm5120_devs[i];
-               err = request_irq(ADM5120_IRQ_SWITCH, adm5120_poll_irq,
-                       (IRQF_SHARED | IRQF_DISABLED), dev->name, dev);
-               if (err) {
-                       SW_ERR("unable to get irq for %s\n", dev->name);
-                       goto out_int;
-               }
+               adm5120_devs[i] = dev;
+               priv = netdev_priv(dev);
 
 
-               SET_MODULE_OWNER(dev);
-               memset(netdev_priv(dev), 0, sizeof(struct adm5120_sw));
-               ((struct adm5120_sw*)netdev_priv(dev))->port = i;
-               dev->base_addr = ADM5120_SWITCH_BASE;
-               dev->irq = ADM5120_IRQ_SWITCH;
-               dev->open = adm5120_switch_open;
-               dev->hard_start_xmit = adm5120_sw_start_xmit;
-               dev->stop = adm5120_switch_stop;
-               dev->set_multicast_list = adm5120_set_multicast_list;
-               dev->do_ioctl = adm5120_do_ioctl;
-               dev->tx_timeout = adm5120_tx_timeout;
-               dev->watchdog_timeo = TX_TIMEOUT;
-               dev->set_mac_address = adm5120_sw_set_mac_address;
-               dev->poll = adm5120_switch_rx;
-               dev->weight = 64;
+               priv->vlan_no = i;
+               priv->port_mask = adm5120_eth_vlans[i];
 
                memcpy(dev->dev_addr, adm5120_eth_macs[i], 6);
                adm5120_write_mac(dev);
 
 
                memcpy(dev->dev_addr, adm5120_eth_macs[i], 6);
                adm5120_write_mac(dev);
 
-               if ((err = register_netdev(dev))) {
-                       free_irq(ADM5120_IRQ_SWITCH, dev);
-                       free_netdev(dev);
-                       goto out_int;
+               err = register_netdev(dev);
+               if (err) {
+                       SW_INFO("%s register failed, error=%d\n",
+                                       dev->name, err);
+                       goto err;
                }
                }
-               SW_INFO("%s created for switch port%d\n", dev->name, i);
        }
        }
+
        /* setup vlan/port mapping after devs are filled up */
        adm5120_set_vlan(adm5120_eth_vlans);
 
        /* setup vlan/port mapping after devs are filled up */
        adm5120_set_vlan(adm5120_eth_vlans);
 
@@ -830,43 +1165,48 @@ static int __init adm5120_sw_init(void)
 
        return 0;
 
 
        return 0;
 
-out_int:
-       /* Undo everything that did succeed */
-       for (; i; i--) {
-               unregister_netdev(adm5120_devs[i-1]);
-               free_netdev(adm5120_devs[i-1]);
-       }
-       free_irq(ADM5120_IRQ_SWITCH, NULL);
-out:
+err:
+       adm5120_switch_cleanup();
+
        SW_ERR("init failed\n");
        return err;
 }
 
        SW_ERR("init failed\n");
        return err;
 }
 
-static void __exit adm5120_sw_exit(void)
+static int adm5120_switch_remove(struct platform_device *dev)
 {
 {
-       int i;
+       adm5120_switch_cleanup();
+       return 0;
+}
 
 
-       for (i = 0; i < SWITCH_NUM_PORTS; i++) {
-               struct net_device *dev = adm5120_devs[i];
-               unregister_netdev(dev);
-               free_irq(ADM5120_IRQ_SWITCH, dev);
-               free_netdev(dev);
-       }
+static struct platform_driver adm5120_switch_driver = {
+       .probe          = adm5120_switch_probe,
+       .remove         = adm5120_switch_remove,
+       .driver         = {
+               .name   = DRV_NAME,
+       },
+};
 
 
-       free_irq(ADM5120_IRQ_SWITCH, &sw_dev);
+/* -------------------------------------------------------------------------- */
 
 
-       for (i = 0; i < RX_RING_SIZE; i++) {
-               if (!rxh_skbuff[i])
-                       break;
-               kfree_skb(rxh_skbuff[i]);
-       }
+static int __init adm5120_switch_mod_init(void)
+{
+       int err;
 
 
-       for (i = 0; i < RX_RING_SIZE; i++) {
-               if (!rxl_skbuff[i])
-                       break;
-               kfree_skb(rxl_skbuff[i]);
-       }
+       pr_info(DRV_DESC " version " DRV_VERSION "\n");
+       err = platform_driver_register(&adm5120_switch_driver);
+
+       return err;
 }
 
 }
 
-module_init(adm5120_sw_init);
-module_exit(adm5120_sw_exit);
+static void __exit adm5120_switch_mod_exit(void)
+{
+       platform_driver_unregister(&adm5120_switch_driver);
+}
+
+module_init(adm5120_switch_mod_init);
+module_exit(adm5120_switch_mod_exit);
+
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("Gabor Juhos <juhosg@openwrt.org>");
+MODULE_DESCRIPTION(DRV_DESC);
+MODULE_VERSION(DRV_VERSION);
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