[adm5120] remove 2.6.25 specific stuff
[openwrt.git] / target / linux / adm5120 / files / drivers / net / adm5120sw.c
diff --git a/target/linux/adm5120/files/drivers/net/adm5120sw.c b/target/linux/adm5120/files/drivers/net/adm5120sw.c
deleted file mode 100644 (file)
index 8f3610e..0000000
+++ /dev/null
@@ -1,1205 +0,0 @@
-/*
- *  ADM5120 built-in ethernet switch driver
- *
- *  Copyright (C) 2007,2008 Gabor Juhos <juhosg at openwrt.org>
- *
- *  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.
- *
- *  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/platform_device.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 <adm5120_info.h>
-#include <adm5120_defs.h>
-#include <adm5120_irq.h>
-#include <adm5120_switch.h>
-
-#include "adm5120sw.h"
-
-#define DRV_NAME       "adm5120-switch"
-#define DRV_DESC       "ADM5120 built-in ethernet switch driver"
-#define DRV_VERSION    "0.1.1"
-
-#define CONFIG_ADM5120_SWITCH_NAPI     1
-#undef CONFIG_ADM5120_SWITCH_DEBUG
-
-/* ------------------------------------------------------------------------ */
-
-#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
-#define SW_ERR(f, a...)                printk(KERN_ERR "%s: " f, DRV_NAME , ## a)
-#define SW_INFO(f, a...)       printk(KERN_INFO "%s: " f, DRV_NAME , ## a)
-
-#define SWITCH_NUM_PORTS       6
-#define ETH_CSUM_LEN           4
-
-#define RX_MAX_PKTLEN  1550
-#define RX_RING_SIZE   64
-
-#define TX_RING_SIZE   32
-#define TX_QUEUE_LEN   28      /* Limit ring entries actually used. */
-#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 SWITCH_INTS_HIGH (SWITCH_INT_SHD | SWITCH_INT_RHD | SWITCH_INT_HDF)
-#define SWITCH_INTS_LOW (SWITCH_INT_SLD | SWITCH_INT_RLD | SWITCH_INT_LDF)
-#define SWITCH_INTS_ERR (SWITCH_INT_RDE | SWITCH_INT_SDE | SWITCH_INT_CPUH)
-#define SWITCH_INTS_Q (SWITCH_INT_P0QF | SWITCH_INT_P1QF | SWITCH_INT_P2QF | \
-                       SWITCH_INT_P3QF | SWITCH_INT_P4QF | SWITCH_INT_P5QF | \
-                       SWITCH_INT_CPQF | SWITCH_INT_GQF)
-
-#define SWITCH_INTS_ALL (SWITCH_INTS_HIGH | SWITCH_INTS_LOW | \
-                       SWITCH_INTS_ERR | SWITCH_INTS_Q | \
-                       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 | 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 */
-#define DESC_EOR               (1UL << 28)     /* End of Ring */
-#define DESC_ADDR_MASK         0x1FFFFFF
-#define DESC_ADDR(x)   ((__u32)(x) & DESC_ADDR_MASK)
-       __u32                   buf2;
-#define DESC_BUF2_EN           (1UL << 31)     /* Buffer 2 enable */
-       __u32                   buflen;
-       __u32                   misc;
-/* definitions for tx/rx descriptors */
-#define DESC_PKTLEN_SHIFT      16
-#define DESC_PKTLEN_MASK       0x7FF
-/* tx descriptor specific part */
-#define DESC_CSUM              (1UL << 31)     /* Append checksum */
-#define DESC_DSTPORT_SHIFT     8
-#define DESC_DSTPORT_MASK      0x3F
-#define DESC_VLAN_MASK         0x3F
-/* rx descriptor specific part */
-#define DESC_SRCPORT_SHIFT     12
-#define DESC_SRCPORT_MASK      0x7
-#define DESC_DA_MASK           0x3
-#define DESC_DA_SHIFT          4
-#define DESC_IPCSUM_FAIL       (1UL << 3)      /* IP checksum fail */
-#define DESC_VLAN_TAG          (1UL << 2)      /* VLAN tag present */
-#define DESC_TYPE_MASK         0x3             /* mask for Packet type */
-#define DESC_TYPE_IP           0x0             /* IP packet */
-#define DESC_TYPE_PPPoE                0x1             /* PPPoE packet */
-} __attribute__ ((aligned(16)));
-
-/* ------------------------------------------------------------------------ */
-
-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 *txl_descs;
-static struct dma_desc *rxl_descs;
-
-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 spinlock_t tx_lock = SPIN_LOCK_UNLOCKED;
-
-/* ------------------------------------------------------------------------ */
-
-static inline u32 sw_read_reg(u32 reg)
-{
-       return __raw_readl((void __iomem *)KSEG1ADDR(ADM5120_SWITCH_BASE)+reg);
-}
-
-static inline void sw_write_reg(u32 reg, u32 val)
-{
-       __raw_writel(val, (void __iomem *)KSEG1ADDR(ADM5120_SWITCH_BASE)+reg);
-}
-
-static inline void sw_int_mask(u32 mask)
-{
-       u32     t;
-
-       t = sw_read_reg(SWITCH_REG_INT_MASK);
-       t |= mask;
-       sw_write_reg(SWITCH_REG_INT_MASK, t);
-}
-
-static inline void sw_int_unmask(u32 mask)
-{
-       u32     t;
-
-       t = sw_read_reg(SWITCH_REG_INT_MASK);
-       t &= ~mask;
-       sw_write_reg(SWITCH_REG_INT_MASK, t);
-}
-
-static inline void sw_int_ack(u32 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)
-{
-       u32 t;
-
-       SW_DBG("%s %s desc/%p\n", label, tx ? "tx" : "rx", desc);
-
-       t = desc->buf1;
-       SW_DBG("    buf1 %08X addr=%08X; len=%08X %s%s\n", t,
-               t & DESC_ADDR_MASK,
-               desc->buflen,
-               (t & DESC_OWN) ? "SWITCH" : "CPU",
-               (t & DESC_EOR) ? " RE" : "");
-
-       t = desc->buf2;
-       SW_DBG("    buf2 %08X addr=%08X%s\n", desc->buf2,
-               t & DESC_ADDR_MASK,
-               (t & DESC_BUF2_EN) ? " EN" : "" );
-
-       t = desc->misc;
-       if (tx)
-               SW_DBG("    misc %08X%s pktlen=%04X ports=%02X vlan=%02X\n", t,
-                       (t & DESC_CSUM) ? " CSUM" : "",
-                       (t >> DESC_PKTLEN_SHIFT) & DESC_PKTLEN_MASK,
-                       (t >> DESC_DSTPORT_SHIFT) & DESC_DSTPORT_MASK,
-                       t & DESC_VLAN_MASK);
-       else
-               SW_DBG("    misc %08X pktlen=%04X port=%d DA=%d%s%s type=%d\n",
-                       t,
-                       (t >> DESC_PKTLEN_SHIFT) & DESC_PKTLEN_MASK,
-                       (t >> DESC_SRCPORT_SHIFT) & DESC_SRCPORT_MASK,
-                       (t >> DESC_DA_SHIFT) & DESC_DA_MASK,
-                       (t & DESC_IPCSUM_FAIL) ? " IPCF" : "",
-                       (t & DESC_VLAN_TAG) ? " VLAN" : "",
-                       (t & DESC_TYPE_MASK));
-}
-
-static void sw_dump_intr_mask(char *label, u32 mask)
-{
-       SW_DBG("%s %08X%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n",
-               label, mask,
-               (mask & SWITCH_INT_SHD) ? " SHD" : "",
-               (mask & SWITCH_INT_SLD) ? " SLD" : "",
-               (mask & SWITCH_INT_RHD) ? " RHD" : "",
-               (mask & SWITCH_INT_RLD) ? " RLD" : "",
-               (mask & SWITCH_INT_HDF) ? " HDF" : "",
-               (mask & SWITCH_INT_LDF) ? " LDF" : "",
-               (mask & SWITCH_INT_P0QF) ? " P0QF" : "",
-               (mask & SWITCH_INT_P1QF) ? " P1QF" : "",
-               (mask & SWITCH_INT_P2QF) ? " P2QF" : "",
-               (mask & SWITCH_INT_P3QF) ? " P3QF" : "",
-               (mask & SWITCH_INT_P4QF) ? " P4QF" : "",
-               (mask & SWITCH_INT_CPQF) ? " CPQF" : "",
-               (mask & SWITCH_INT_GQF) ? " GQF" : "",
-               (mask & SWITCH_INT_MD) ? " MD" : "",
-               (mask & SWITCH_INT_BCS) ? " BCS" : "",
-               (mask & SWITCH_INT_PSC) ? " PSC" : "",
-               (mask & SWITCH_INT_ID) ? " ID" : "",
-               (mask & SWITCH_INT_W0TE) ? " W0TE" : "",
-               (mask & SWITCH_INT_W1TE) ? " W1TE" : "",
-               (mask & SWITCH_INT_RDE) ? " RDE" : "",
-               (mask & SWITCH_INT_SDE) ? " SDE" : "",
-               (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,
-       struct sk_buff *skb, int end)
-{
-       desc->misc = 0;
-       desc->buf2 = 0;
-       desc->buflen = RX_MAX_PKTLEN;
-       desc->buf1 = DESC_ADDR(skb->data) |
-               DESC_OWN | (end ? DESC_EOR : 0);
-}
-
-static void adm5120_switch_rx_refill(void)
-{
-       unsigned int entry;
-
-       for (; cur_rxl - dirty_rxl > 0; dirty_rxl++) {
-               struct dma_desc *desc;
-               struct sk_buff *skb;
-
-               entry = dirty_rxl % RX_RING_SIZE;
-               desc = &rxl_descs[entry];
-
-               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;
-                       }
-               }
-
-               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 {
-                               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);
-               }
-
-               cur_rxl++;
-               if (cur_rxl - dirty_rxl > RX_RING_SIZE / 4)
-                       adm5120_switch_rx_refill();
-       }
-
-       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;
-
-       spin_lock(&tx_lock);
-       entry = dirty_txl % TX_RING_SIZE;
-       while (dirty_txl != cur_txl) {
-               struct dma_desc *desc = &txl_descs[entry];
-               struct sk_buff *skb = txl_skbuff[entry];
-
-               if (desc->buf1 & DESC_OWN)
-                       break;
-
-               if (netif_running(skb->dev)) {
-                       skb->dev->stats.tx_bytes += skb->len;
-                       skb->dev->stats.tx_packets++;
-               }
-
-               dev_kfree_skb_irq(skb);
-               txl_skbuff[entry] = NULL;
-               entry = (++dirty_txl) % TX_RING_SIZE;
-       }
-
-       if ((cur_txl - dirty_txl) < TX_QUEUE_LEN - 4) {
-               int i;
-               for (i = 0; i < SWITCH_NUM_PORTS; i++) {
-                       if (!adm5120_devs[i])
-                               continue;
-                       netif_wake_queue(adm5120_devs[i]);
-               }
-       }
-       spin_unlock(&tx_lock);
-}
-
-#ifdef CONFIG_ADM5120_SWITCH_NAPI
-static int adm5120_if_poll(struct napi_struct *napi, int limit)
-{
-       struct adm5120_if_priv *priv = container_of(napi,
-                               struct adm5120_if_priv, napi);
-       struct net_device *dev = priv->dev;
-       int done;
-       u32 status;
-
-       sw_int_ack(SWITCH_INTS_POLL);
-
-       SW_DBG("%s: processing TX ring\n", dev->name);
-       adm5120_switch_tx();
-
-       SW_DBG("%s: processing RX ring\n", dev->name);
-       done = adm5120_switch_rx(limit);
-
-       status = sw_int_status() & SWITCH_INTS_POLL;
-       if ((done < limit) && (!status)) {
-               SW_DBG("disable polling mode for %s\n", dev->name);
-               netif_rx_complete(dev, 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)
-{
-       u32 status;
-
-       status = sw_int_status();
-       status &= SWITCH_INTS_ALL;
-       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);
-               netif_rx_schedule(dev, &priv->napi);
-       }
-#else
-       sw_int_ack(status);
-
-       if (status & (SWITCH_INT_RLD | SWITCH_INT_LDF)) {
-               adm5120_switch_rx(RX_RING_SIZE);
-       }
-
-       if (status & SWITCH_INT_SLD) {
-               adm5120_switch_tx();
-       }
-#endif
-
-       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;
-       int vlan_port, port;
-
-       val = matrix[0] + (matrix[1]<<8) + (matrix[2]<<16) + (matrix[3]<<24);
-       sw_write_reg(SWITCH_REG_VLAN_G1, val);
-       val = matrix[4] + (matrix[5]<<8);
-       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)
-                       adm5120_port[port] = adm5120_devs[vlan_port];
-               else
-                       adm5120_port[port] = NULL;
-       }
-}
-
-static void adm5120_switch_set_vlan_mac(unsigned int vlan, unsigned char *mac)
-{
-       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 | (vlan << MAC_WT0_WVN_SHIFT) |
-               (MAC_WT0_WAF_STATIC << MAC_WT0_WAF_SHIFT);
-       sw_write_reg(SWITCH_REG_MAC_WT0, t);
-
-       do {
-               t = sw_read_reg(SWITCH_REG_MAC_WT0);
-       } while ((t & MAC_WT0_MWD) == 0);
-}
-
-static void adm5120_switch_set_vlan_ports(unsigned int vlan, u32 ports)
-{
-       unsigned int reg;
-       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;
-
-       adm5120_if_napi_enable(dev);
-
-       err = request_irq(dev->irq, adm5120_switch_irq,
-               (IRQF_SHARED | IRQF_DISABLED), 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 */
-               sw_int_unmask(SWITCH_INTS_USED);
-
-       /* enable (additional) port */
-       t = sw_read_reg(SWITCH_REG_PORT_CONF0);
-       for (i = 0; i < SWITCH_NUM_PORTS; i++) {
-               if (dev == adm5120_devs[i])
-                       t &= ~adm5120_eth_vlans[i];
-       }
-       sw_write_reg(SWITCH_REG_PORT_CONF0, t);
-
-       netif_start_queue(dev);
-
-       return 0;
-
-err:
-       adm5120_if_napi_disable(dev);
-       return err;
-}
-
-static int adm5120_if_stop(struct net_device *dev)
-{
-       u32 t;
-       int i;
-
-       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);
-       t |= SWITCH_PORTS_NOCPU;
-       for (i = 0; i < SWITCH_NUM_PORTS; i++) {
-               if ((dev != adm5120_devs[i]) && netif_running(adm5120_devs[i]))
-                       t &= ~adm5120_eth_vlans[i];
-       }
-       sw_write_reg(SWITCH_REG_PORT_CONF0, t);
-
-       if (!--sw_used)
-               sw_int_mask(SWITCH_INTS_USED);
-
-       free_irq(dev->irq, dev);
-
-       return 0;
-}
-
-static int adm5120_if_hard_start_xmit(struct sk_buff *skb,
-               struct net_device *dev)
-{
-       struct dma_desc *desc;
-       struct adm5120_if_priv *priv = netdev_priv(dev);
-       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;
-
-       desc = &txl_descs[entry];
-       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;
-       }
-
-       txl_skbuff[entry] = skb;
-       data = (desc->buf1 & DESC_EOR);
-       data |= DESC_ADDR(skb->data);
-
-       desc->misc =
-           ((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->buf1 = data | DESC_OWN;
-       sw_write_reg(SWITCH_REG_SEND_TRIG, SEND_TRIG_STL);
-
-       cur_txl++;
-       if (cur_txl == dirty_txl + TX_QUEUE_LEN) {
-               for (i = 0; i < SWITCH_NUM_PORTS; i++) {
-                       if (!adm5120_devs[i])
-                               continue;
-                       netif_stop_queue(adm5120_devs[i]);
-               }
-       }
-
-       dev->trans_start = jiffies;
-
-       spin_unlock_irq(&tx_lock);
-
-       return 0;
-}
-
-static void adm5120_if_tx_timeout(struct net_device *dev)
-{
-       SW_INFO("TX timeout on %s\n",dev->name);
-}
-
-static void adm5120_if_set_multicast_list(struct net_device *dev)
-{
-       struct adm5120_if_priv *priv = netdev_priv(dev);
-       u32 ports;
-       u32 t;
-
-       ports = adm5120_eth_vlans[priv->vlan_no] & SWITCH_PORTS_NOCPU;
-
-       t = sw_read_reg(SWITCH_REG_CPUP_CONF);
-       if (dev->flags & IFF_PROMISC)
-               /* enable unknown packets */
-               t &= ~(ports << CPUP_CONF_DUNP_SHIFT);
-       else
-               /* disable unknown packets */
-               t |= (ports << CPUP_CONF_DUNP_SHIFT);
-
-       if (dev->flags & IFF_PROMISC || dev->flags & IFF_ALLMULTI ||
-                                       dev->mc_count)
-               /* enable multicast packets */
-               t &= ~(ports << CPUP_CONF_DMCP_SHIFT);
-       else
-               /* disable multicast packets */
-               t |= (ports << CPUP_CONF_DMCP_SHIFT);
-
-       /* If there is any port configured to be in promiscuous mode, then the */
-       /* Bridge Test Mode has to be activated. This will result in           */
-       /* transporting also packets learned in another VLAN to be forwarded   */
-       /* to the CPU.                                                         */
-       /* The difficult scenario is when we want to build a bridge on the CPU.*/
-       /* Assume we have port0 and the CPU port in VLAN0 and port1 and the    */
-       /* CPU port in VLAN1. Now we build a bridge on the CPU between         */
-       /* VLAN0 and VLAN1. Both ports of the VLANs are set in promisc mode.   */
-       /* Now assume a packet with ethernet source address 99 enters port 0   */
-       /* It will be forwarded to the CPU because it is unknown. Then the     */
-       /* bridge in the CPU will send it to VLAN1 and it goes out at port 1.  */
-       /* When now a packet with ethernet destination address 99 comes in at  */
-       /* port 1 in VLAN1, then the switch has learned that this address is   */
-       /* located at port 0 in VLAN0. Therefore the switch will drop          */
-       /* this packet. In order to avoid this and to send the packet still    */
-       /* 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
-               t |= CPUP_CONF_BTM;  /* Enable Bridge Testing Mode */
-
-       sw_write_reg(SWITCH_REG_CPUP_CONF, t);
-
-}
-
-static int adm5120_if_set_mac_address(struct net_device *dev, void *p)
-{
-       struct sockaddr *addr = p;
-
-       memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
-       adm5120_write_mac(dev);
-       return 0;
-}
-
-static int adm5120_if_do_ioctl(struct net_device *dev, struct ifreq *rq,
-               int cmd)
-{
-       int err;
-       struct adm5120_sw_info info;
-       struct adm5120_if_priv *priv = netdev_priv(dev);
-
-       switch(cmd) {
-       case SIOCGADMINFO:
-               info.magic = 0x5120;
-               info.ports = adm5120_nrdevs;
-               info.vlan = priv->vlan_no;
-               err = copy_to_user(rq->ifr_data, &info, sizeof(info));
-               if (err)
-                       return -EFAULT;
-               break;
-       case SIOCSMATRIX:
-               if (!capable(CAP_NET_ADMIN))
-                       return -EPERM;
-               err = copy_from_user(adm5120_eth_vlans, rq->ifr_data,
-                                       sizeof(adm5120_eth_vlans));
-               if (err)
-                       return -EFAULT;
-               adm5120_set_vlan(adm5120_eth_vlans);
-               break;
-       case SIOCGMATRIX:
-               err = copy_to_user(rq->ifr_data, adm5120_eth_vlans,
-                                       sizeof(adm5120_eth_vlans));
-               if (err)
-                       return -EFAULT;
-               break;
-       default:
-               return -EOPNOTSUPP;
-       }
-       return 0;
-}
-
-static struct net_device *adm5120_if_alloc(void)
-{
-       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->open               = adm5120_if_open;
-       dev->hard_start_xmit    = adm5120_if_hard_start_xmit;
-       dev->stop               = adm5120_if_stop;
-       dev->set_multicast_list = adm5120_if_set_multicast_list;
-       dev->do_ioctl           = adm5120_if_do_ioctl;
-       dev->tx_timeout         = adm5120_if_tx_timeout;
-       dev->watchdog_timeo     = TX_TIMEOUT;
-       dev->set_mac_address    = adm5120_if_set_mac_address;
-
-#ifdef CONFIG_ADM5120_SWITCH_NAPI
-       netif_napi_add(dev, &priv->napi, adm5120_if_poll, 64);
-#endif
-
-       return dev;
-}
-
-/* ------------------------------------------------------------------------ */
-
-static void adm5120_switch_cleanup(void)
-{
-       int i;
-
-       /* 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);
-               }
-       }
-
-       adm5120_switch_tx_ring_free();
-       adm5120_switch_rx_ring_free();
-}
-
-static int __init adm5120_switch_probe(struct platform_device *pdev)
-{
-       u32 t;
-       int i, err;
-
-       adm5120_nrdevs = adm5120_eth_num_ports;
-
-       t = CPUP_CONF_DCPUP | CPUP_CONF_CRCP |
-               SWITCH_PORTS_NOCPU << CPUP_CONF_DUNP_SHIFT |
-               SWITCH_PORTS_NOCPU << CPUP_CONF_DMCP_SHIFT ;
-       sw_write_reg(SWITCH_REG_CPUP_CONF, t);
-
-       t = (SWITCH_PORTS_NOCPU << PORT_CONF0_EMCP_SHIFT) |
-               (SWITCH_PORTS_NOCPU << PORT_CONF0_BP_SHIFT) |
-               (SWITCH_PORTS_NOCPU);
-       sw_write_reg(SWITCH_REG_PORT_CONF0, t);
-
-       /* setup ports to Autoneg/100M/Full duplex/Auto MDIX */
-       t =  SWITCH_PORTS_PHY |
-               (SWITCH_PORTS_PHY << PHY_CNTL2_SC_SHIFT) |
-               (SWITCH_PORTS_PHY << PHY_CNTL2_DC_SHIFT) |
-               (SWITCH_PORTS_PHY << PHY_CNTL2_PHYR_SHIFT) |
-               (SWITCH_PORTS_PHY << PHY_CNTL2_AMDIX_SHIFT) |
-               PHY_CNTL2_RMAE;
-       sw_write_reg(SWITCH_REG_PHY_CNTL2, t);
-
-       t = sw_read_reg(SWITCH_REG_PHY_CNTL3);
-       t |= PHY_CNTL3_RNT;
-       sw_write_reg(SWITCH_REG_PHY_CNTL3, t);
-
-       /* Force all the packets from all ports are low priority */
-       sw_write_reg(SWITCH_REG_PRI_CNTL, 0);
-
-       sw_int_mask(SWITCH_INTS_ALL);
-       sw_int_ack(SWITCH_INTS_ALL);
-
-       err = adm5120_switch_rx_ring_alloc();
-       if (err)
-               goto err;
-
-       err = adm5120_switch_tx_ring_alloc();
-       if (err)
-               goto err;
-
-       adm5120_switch_tx_ring_reset(txl_descs, txl_skbuff, TX_RING_SIZE);
-       adm5120_switch_rx_ring_reset(rxl_descs, rxl_skbuff, RX_RING_SIZE);
-
-       sw_write_reg(SWITCH_REG_SHDA, 0);
-       sw_write_reg(SWITCH_REG_SLDA, KSEG1ADDR(txl_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++) {
-               struct net_device *dev;
-               struct adm5120_if_priv *priv;
-
-               dev = adm5120_if_alloc();
-               if (!dev) {
-                       err = -ENOMEM;
-                       goto err;
-               }
-
-               adm5120_devs[i] = dev;
-               priv = netdev_priv(dev);
-
-               priv->vlan_no = i;
-               priv->port_mask = adm5120_eth_vlans[i];
-
-               memcpy(dev->dev_addr, adm5120_eth_macs[i], 6);
-               adm5120_write_mac(dev);
-
-               err = register_netdev(dev);
-               if (err) {
-                       SW_INFO("%s register failed, error=%d\n",
-                                       dev->name, err);
-                       goto err;
-               }
-       }
-
-       /* setup vlan/port mapping after devs are filled up */
-       adm5120_set_vlan(adm5120_eth_vlans);
-
-       /* enable CPU port */
-       t = sw_read_reg(SWITCH_REG_CPUP_CONF);
-       t &= ~CPUP_CONF_DCPUP;
-       sw_write_reg(SWITCH_REG_CPUP_CONF, t);
-
-       return 0;
-
-err:
-       adm5120_switch_cleanup();
-
-       SW_ERR("init failed\n");
-       return err;
-}
-
-static int adm5120_switch_remove(struct platform_device *dev)
-{
-       adm5120_switch_cleanup();
-       return 0;
-}
-
-static struct platform_driver adm5120_switch_driver = {
-       .probe          = adm5120_switch_probe,
-       .remove         = adm5120_switch_remove,
-       .driver         = {
-               .name   = DRV_NAME,
-       },
-};
-
-/* -------------------------------------------------------------------------- */
-
-static int __init adm5120_switch_mod_init(void)
-{
-       int err;
-
-       pr_info(DRV_DESC " version " DRV_VERSION "\n");
-       err = platform_driver_register(&adm5120_switch_driver);
-
-       return err;
-}
-
-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 at openwrt.org>");
-MODULE_DESCRIPTION(DRV_DESC);
-MODULE_VERSION(DRV_VERSION);
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