target/linux/lantiq/patches-3.9/0010-NET-MIPS-lantiq-update-etop-driver-for-devicetree.patch

   1 From fd69e82feee0966fd61374ea76d6ff36ce42e51c Mon Sep 17 00:00:00 2001
   2 From: John Crispin <blogic@openwrt.org>
   3 Date: Sat, 29 Jun 2013 19:42:16 +0200
   4 Subject: [PATCH 10/22] NET: MIPS: lantiq: update etop driver for devicetree
   5
   6 ---
   7  drivers/net/ethernet/lantiq_etop.c |  500 +++++++++++++++++++++++++-----------
   8  1 file changed, 354 insertions(+), 146 deletions(-)
   9
  10 --- a/drivers/net/ethernet/lantiq_etop.c
  11 +++ b/drivers/net/ethernet/lantiq_etop.c
  12 @@ -12,7 +12,7 @@
  13   *   along with this program; if not, write to the Free Software
  14   *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
  15   *
  16 - *   Copyright (C) 2011 John Crispin <blogic@openwrt.org>
  17 + *   Copyright (C) 2011-12 John Crispin <blogic@openwrt.org>
  18   */
  19
  20  #include <linux/kernel.h>
  21 @@ -36,6 +36,10 @@
  22  #include <linux/io.h>
  23  #include <linux/dma-mapping.h>
  24  #include <linux/module.h>
  25 +#include <linux/clk.h>
  26 +#include <linux/of_net.h>
  27 +#include <linux/of_irq.h>
  28 +#include <linux/of_platform.h>
  29
  30  #include <asm/checksum.h>
  31
  32 @@ -71,25 +75,61 @@
  33  #define ETOP_MII_REVERSE       0xe
  34  #define ETOP_PLEN_UNDER                0x40
  35  #define ETOP_CGEN              0x800
  36 +#define ETOP_CFG_MII0          0x01
  37
  38 -/* use 2 static channels for TX/RX */
  39 -#define LTQ_ETOP_TX_CHANNEL    1
  40 -#define LTQ_ETOP_RX_CHANNEL    6
  41 -#define IS_TX(x)               (x == LTQ_ETOP_TX_CHANNEL)
  42 -#define IS_RX(x)               (x == LTQ_ETOP_RX_CHANNEL)
  43 +#define LTQ_GBIT_MDIO_CTL      0xCC
  44 +#define LTQ_GBIT_MDIO_DATA     0xd0
  45 +#define LTQ_GBIT_GCTL0         0x68
  46 +#define LTQ_GBIT_PMAC_HD_CTL   0x8c
  47 +#define LTQ_GBIT_P0_CTL                0x4
  48 +#define LTQ_GBIT_PMAC_RX_IPG   0xa8
  49 +#define LTQ_GBIT_RGMII_CTL     0x78
  50 +
  51 +#define PMAC_HD_CTL_AS         (1 << 19)
  52 +#define PMAC_HD_CTL_RXSH       (1 << 22)
  53 +
  54 +/* Switch Enable (0=disable, 1=enable) */
  55 +#define GCTL0_SE               0x80000000
  56 +/* Disable MDIO auto polling (0=disable, 1=enable) */
  57 +#define PX_CTL_DMDIO           0x00400000
  58 +
  59 +/* MDC clock divider, clock = 25MHz/((MDC_CLOCK + 1) * 2) */
  60 +#define MDC_CLOCK_MASK         0xff000000
  61 +#define MDC_CLOCK_OFFSET       24
  62 +
  63 +/* register information for the gbit's MDIO bus */
  64 +#define MDIO_XR9_REQUEST       0x00008000
  65 +#define MDIO_XR9_READ          0x00000800
  66 +#define MDIO_XR9_WRITE         0x00000400
  67 +#define MDIO_XR9_REG_MASK      0x1f
  68 +#define MDIO_XR9_ADDR_MASK     0x1f
  69 +#define MDIO_XR9_RD_MASK       0xffff
  70 +#define MDIO_XR9_REG_OFFSET    0
  71 +#define MDIO_XR9_ADDR_OFFSET   5
  72 +#define MDIO_XR9_WR_OFFSET     16
  73
  74 +#define LTQ_DMA_ETOP   ((of_machine_is_compatible("lantiq,ase")) ? \
  75 +                       (INT_NUM_IM3_IRL0) : (INT_NUM_IM2_IRL0))
  76 +
  77 +/* the newer xway socks have a embedded 3/7 port gbit multiplexer */
  78  #define ltq_etop_r32(x)                ltq_r32(ltq_etop_membase + (x))
  79  #define ltq_etop_w32(x, y)     ltq_w32(x, ltq_etop_membase + (y))
  80  #define ltq_etop_w32_mask(x, y, z)     \
  81                 ltq_w32_mask(x, y, ltq_etop_membase + (z))
  82
  83 -#define DRV_VERSION    "1.0"
  84 +#define ltq_gbit_r32(x)                ltq_r32(ltq_gbit_membase + (x))
  85 +#define ltq_gbit_w32(x, y)     ltq_w32(x, ltq_gbit_membase + (y))
  86 +#define ltq_gbit_w32_mask(x, y, z)     \
  87 +               ltq_w32_mask(x, y, ltq_gbit_membase + (z))
  88 +
  89 +#define DRV_VERSION    "1.2"
  90
  91  static void __iomem *ltq_etop_membase;
  92 +static void __iomem *ltq_gbit_membase;
  93
  94  struct ltq_etop_chan {
  95 -       int idx;
  96         int tx_free;
  97 +       int irq;
  98         struct net_device *netdev;
  99         struct napi_struct napi;
 100         struct ltq_dma_channel dma;
 101 @@ -99,22 +139,35 @@ struct ltq_etop_chan {
 102  struct ltq_etop_priv {
 103         struct net_device *netdev;
 104         struct platform_device *pdev;
 105 -       struct ltq_eth_data *pldata;
 106         struct resource *res;
 107
 108         struct mii_bus *mii_bus;
 109         struct phy_device *phydev;
 110
 111 -       struct ltq_etop_chan ch[MAX_DMA_CHAN];
 112 -       int tx_free[MAX_DMA_CHAN >> 1];
 113 +       struct ltq_etop_chan txch;
 114 +       struct ltq_etop_chan rxch;
 115 +
 116 +       int tx_irq;
 117 +       int rx_irq;
 118 +
 119 +       const void *mac;
 120 +       int mii_mode;
 121
 122         spinlock_t lock;
 123 +
 124 +       struct clk *clk_ppe;
 125 +       struct clk *clk_switch;
 126 +       struct clk *clk_ephy;
 127 +       struct clk *clk_ephycgu;
 128  };
 129
 130 +static int ltq_etop_mdio_wr(struct mii_bus *bus, int phy_addr,
 131 +                               int phy_reg, u16 phy_data);
 132 +
 133  static int
 134  ltq_etop_alloc_skb(struct ltq_etop_chan *ch)
 135  {
 136 -       ch->skb[ch->dma.desc] = netdev_alloc_skb(ch->netdev, MAX_DMA_DATA_LEN);
 137 +       ch->skb[ch->dma.desc] = dev_alloc_skb(MAX_DMA_DATA_LEN);
 138         if (!ch->skb[ch->dma.desc])
 139                 return -ENOMEM;
 140         ch->dma.desc_base[ch->dma.desc].addr = dma_map_single(NULL,
 141 @@ -149,8 +202,11 @@ ltq_etop_hw_receive(struct ltq_etop_chan
 142         spin_unlock_irqrestore(&priv->lock, flags);
 143
 144         skb_put(skb, len);
 145 +       skb->dev = ch->netdev;
 146         skb->protocol = eth_type_trans(skb, ch->netdev);
 147         netif_receive_skb(skb);
 148 +       ch->netdev->stats.rx_packets++;
 149 +       ch->netdev->stats.rx_bytes += len;
 150  }
 151
 152  static int
 153 @@ -158,8 +214,10 @@ ltq_etop_poll_rx(struct napi_struct *nap
 154  {
 155         struct ltq_etop_chan *ch = container_of(napi,
 156                                 struct ltq_etop_chan, napi);
 157 +       struct ltq_etop_priv *priv = netdev_priv(ch->netdev);
 158         int rx = 0;
 159         int complete = 0;
 160 +       unsigned long flags;
 161
 162         while ((rx < budget) && !complete) {
 163                 struct ltq_dma_desc *desc = &ch->dma.desc_base[ch->dma.desc];
 164 @@ -173,7 +231,9 @@ ltq_etop_poll_rx(struct napi_struct *nap
 165         }
 166         if (complete || !rx) {
 167                 napi_complete(&ch->napi);
 168 +               spin_lock_irqsave(&priv->lock, flags);
 169                 ltq_dma_ack_irq(&ch->dma);
 170 +               spin_unlock_irqrestore(&priv->lock, flags);
 171         }
 172         return rx;
 173  }
 174 @@ -185,12 +245,14 @@ ltq_etop_poll_tx(struct napi_struct *nap
 175                 container_of(napi, struct ltq_etop_chan, napi);
 176         struct ltq_etop_priv *priv = netdev_priv(ch->netdev);
 177         struct netdev_queue *txq =
 178 -               netdev_get_tx_queue(ch->netdev, ch->idx >> 1);
 179 +               netdev_get_tx_queue(ch->netdev, ch->dma.nr >> 1);
 180         unsigned long flags;
 181
 182         spin_lock_irqsave(&priv->lock, flags);
 183         while ((ch->dma.desc_base[ch->tx_free].ctl &
 184                         (LTQ_DMA_OWN | LTQ_DMA_C)) == LTQ_DMA_C) {
 185 +               ch->netdev->stats.tx_packets++;
 186 +               ch->netdev->stats.tx_bytes += ch->skb[ch->tx_free]->len;
 187                 dev_kfree_skb_any(ch->skb[ch->tx_free]);
 188                 ch->skb[ch->tx_free] = NULL;
 189                 memset(&ch->dma.desc_base[ch->tx_free], 0,
 190 @@ -203,7 +265,9 @@ ltq_etop_poll_tx(struct napi_struct *nap
 191         if (netif_tx_queue_stopped(txq))
 192                 netif_tx_start_queue(txq);
 193         napi_complete(&ch->napi);
 194 +       spin_lock_irqsave(&priv->lock, flags);
 195         ltq_dma_ack_irq(&ch->dma);
 196 +       spin_unlock_irqrestore(&priv->lock, flags);
 197         return 1;
 198  }
 199
 200 @@ -211,9 +275,10 @@ static irqreturn_t
 201  ltq_etop_dma_irq(int irq, void *_priv)
 202  {
 203         struct ltq_etop_priv *priv = _priv;
 204 -       int ch = irq - LTQ_DMA_CH0_INT;
 205 -
 206 -       napi_schedule(&priv->ch[ch].napi);
 207 +       if (irq == priv->txch.dma.irq)
 208 +               napi_schedule(&priv->txch.napi);
 209 +       else
 210 +               napi_schedule(&priv->rxch.napi);
 211         return IRQ_HANDLED;
 212  }
 213
 214 @@ -225,7 +290,7 @@ ltq_etop_free_channel(struct net_device
 215         ltq_dma_free(&ch->dma);
 216         if (ch->dma.irq)
 217                 free_irq(ch->dma.irq, priv);
 218 -       if (IS_RX(ch->idx)) {
 219 +       if (ch == &priv->txch) {
 220                 int desc;
 221                 for (desc = 0; desc < LTQ_DESC_NUM; desc++)
 222                         dev_kfree_skb_any(ch->skb[ch->dma.desc]);
 223 @@ -236,23 +301,62 @@ static void
 224  ltq_etop_hw_exit(struct net_device *dev)
 225  {
 226         struct ltq_etop_priv *priv = netdev_priv(dev);
 227 -       int i;
 228
 229 -       ltq_pmu_disable(PMU_PPE);
 230 -       for (i = 0; i < MAX_DMA_CHAN; i++)
 231 -               if (IS_TX(i) || IS_RX(i))
 232 -                       ltq_etop_free_channel(dev, &priv->ch[i]);
 233 +       clk_disable(priv->clk_ppe);
 234 +
 235 +       if (of_machine_is_compatible("lantiq,ar9"))
 236 +               clk_disable(priv->clk_switch);
 237 +
 238 +       if (of_machine_is_compatible("lantiq,ase")) {
 239 +               clk_disable(priv->clk_ephy);
 240 +               clk_disable(priv->clk_ephycgu);
 241 +       }
 242 +
 243 +       ltq_etop_free_channel(dev, &priv->txch);
 244 +       ltq_etop_free_channel(dev, &priv->rxch);
 245 +}
 246 +
 247 +static void
 248 +ltq_etop_gbit_init(struct net_device *dev)
 249 +{
 250 +       struct ltq_etop_priv *priv = netdev_priv(dev);
 251 +
 252 +       clk_enable(priv->clk_switch);
 253 +
 254 +       /* enable gbit port0 on the SoC */
 255 +       ltq_gbit_w32_mask((1 << 17), (1 << 18), LTQ_GBIT_P0_CTL);
 256 +
 257 +       ltq_gbit_w32_mask(0, GCTL0_SE, LTQ_GBIT_GCTL0);
 258 +       /* disable MDIO auto polling mode */
 259 +       ltq_gbit_w32_mask(0, PX_CTL_DMDIO, LTQ_GBIT_P0_CTL);
 260 +       /* set 1522 packet size */
 261 +       ltq_gbit_w32_mask(0x300, 0, LTQ_GBIT_GCTL0);
 262 +       /* disable pmac & dmac headers */
 263 +       ltq_gbit_w32_mask(PMAC_HD_CTL_AS | PMAC_HD_CTL_RXSH, 0,
 264 +               LTQ_GBIT_PMAC_HD_CTL);
 265 +       /* Due to traffic halt when burst length 8,
 266 +               replace default IPG value with 0x3B */
 267 +       ltq_gbit_w32(0x3B, LTQ_GBIT_PMAC_RX_IPG);
 268 +       /* set mdc clock to 2.5 MHz */
 269 +       ltq_gbit_w32_mask(MDC_CLOCK_MASK, 4 << MDC_CLOCK_OFFSET,
 270 +               LTQ_GBIT_RGMII_CTL);
 271  }
 272
 273  static int
 274  ltq_etop_hw_init(struct net_device *dev)
 275  {
 276         struct ltq_etop_priv *priv = netdev_priv(dev);
 277 -       int i;
 278 +       int mii_mode = priv->mii_mode;
 279 +
 280 +       clk_enable(priv->clk_ppe);
 281
 282 -       ltq_pmu_enable(PMU_PPE);
 283 +       if (of_machine_is_compatible("lantiq,ar9")) {
 284 +               ltq_etop_gbit_init(dev);
 285 +               /* force the etops link to the gbit to MII */
 286 +               mii_mode = PHY_INTERFACE_MODE_MII;
 287 +       }
 288
 289 -       switch (priv->pldata->mii_mode) {
 290 +       switch (mii_mode) {
 291         case PHY_INTERFACE_MODE_RMII:
 292                 ltq_etop_w32_mask(ETOP_MII_MASK,
 293                         ETOP_MII_REVERSE, LTQ_ETOP_CFG);
 294 @@ -264,39 +368,68 @@ ltq_etop_hw_init(struct net_device *dev)
 295                 break;
 296
 297         default:
 298 +               if (of_machine_is_compatible("lantiq,ase")) {
 299 +                       clk_enable(priv->clk_ephy);
 300 +                       /* disable external MII */
 301 +                       ltq_etop_w32_mask(0, ETOP_CFG_MII0, LTQ_ETOP_CFG);
 302 +                       /* enable clock for internal PHY */
 303 +                       clk_enable(priv->clk_ephycgu);
 304 +                       /* we need to write this magic to the internal phy to
 305 +                          make it work */
 306 +                       ltq_etop_mdio_wr(NULL, 0x8, 0x12, 0xC020);
 307 +                       pr_info("Selected EPHY mode\n");
 308 +                       break;
 309 +               }
 310                 netdev_err(dev, "unknown mii mode %d\n",
 311 -                       priv->pldata->mii_mode);
 312 +                       mii_mode);
 313                 return -ENOTSUPP;
 314         }
 315
 316         /* enable crc generation */
 317         ltq_etop_w32(PPE32_CGEN, LQ_PPE32_ENET_MAC_CFG);
 318
 319 +       return 0;
 320 +}
 321 +
 322 +static int
 323 +ltq_etop_dma_init(struct net_device *dev)
 324 +{
 325 +       struct ltq_etop_priv *priv = netdev_priv(dev);
 326 +       int tx = priv->tx_irq - LTQ_DMA_ETOP;
 327 +       int rx = priv->rx_irq - LTQ_DMA_ETOP;
 328 +       int err;
 329 +
 330         ltq_dma_init_port(DMA_PORT_ETOP);
 331
 332 -       for (i = 0; i < MAX_DMA_CHAN; i++) {
 333 -               int irq = LTQ_DMA_CH0_INT + i;
 334 -               struct ltq_etop_chan *ch = &priv->ch[i];
 335 -
 336 -               ch->idx = ch->dma.nr = i;
 337 -
 338 -               if (IS_TX(i)) {
 339 -                       ltq_dma_alloc_tx(&ch->dma);
 340 -                       request_irq(irq, ltq_etop_dma_irq, IRQF_DISABLED,
 341 -                               "etop_tx", priv);
 342 -               } else if (IS_RX(i)) {
 343 -                       ltq_dma_alloc_rx(&ch->dma);
 344 -                       for (ch->dma.desc = 0; ch->dma.desc < LTQ_DESC_NUM;
 345 -                                       ch->dma.desc++)
 346 -                               if (ltq_etop_alloc_skb(ch))
 347 -                                       return -ENOMEM;
 348 -                       ch->dma.desc = 0;
 349 -                       request_irq(irq, ltq_etop_dma_irq, IRQF_DISABLED,
 350 -                               "etop_rx", priv);
 351 +       priv->txch.dma.nr = tx;
 352 +       ltq_dma_alloc_tx(&priv->txch.dma);
 353 +       err = request_irq(priv->tx_irq, ltq_etop_dma_irq, IRQF_DISABLED,
 354 +               "eth_tx", priv);
 355 +       if (err) {
 356 +               netdev_err(dev, "failed to allocate tx irq\n");
 357 +               goto err_out;
 358 +       }
 359 +       priv->txch.dma.irq = priv->tx_irq;
 360 +
 361 +       priv->rxch.dma.nr = rx;
 362 +       ltq_dma_alloc_rx(&priv->rxch.dma);
 363 +       for (priv->rxch.dma.desc = 0; priv->rxch.dma.desc < LTQ_DESC_NUM;
 364 +                       priv->rxch.dma.desc++) {
 365 +               if (ltq_etop_alloc_skb(&priv->rxch)) {
 366 +                       netdev_err(dev, "failed to allocate skbs\n");
 367 +                       err = -ENOMEM;
 368 +                       goto err_out;
 369                 }
 370 -               ch->dma.irq = irq;
 371         }
 372 -       return 0;
 373 +       priv->rxch.dma.desc = 0;
 374 +       err = request_irq(priv->rx_irq, ltq_etop_dma_irq, IRQF_DISABLED,
 375 +               "eth_rx", priv);
 376 +       if (err)
 377 +               netdev_err(dev, "failed to allocate rx irq\n");
 378 +       else
 379 +               priv->rxch.dma.irq = priv->rx_irq;
 380 +err_out:
 381 +       return err;
 382  }
 383
 384  static void
 385 @@ -312,7 +445,10 @@ ltq_etop_get_settings(struct net_device
 386  {
 387         struct ltq_etop_priv *priv = netdev_priv(dev);
 388
 389 -       return phy_ethtool_gset(priv->phydev, cmd);
 390 +       if (priv->phydev)
 391 +               return phy_ethtool_gset(priv->phydev, cmd);
 392 +       else
 393 +               return 0;
 394  }
 395
 396  static int
 397 @@ -320,7 +456,10 @@ ltq_etop_set_settings(struct net_device
 398  {
 399         struct ltq_etop_priv *priv = netdev_priv(dev);
 400
 401 -       return phy_ethtool_sset(priv->phydev, cmd);
 402 +       if (priv->phydev)
 403 +               return phy_ethtool_sset(priv->phydev, cmd);
 404 +       else
 405 +               return 0;
 406  }
 407
 408  static int
 409 @@ -328,7 +467,10 @@ ltq_etop_nway_reset(struct net_device *d
 410  {
 411         struct ltq_etop_priv *priv = netdev_priv(dev);
 412
 413 -       return phy_start_aneg(priv->phydev);
 414 +       if (priv->phydev)
 415 +               return phy_start_aneg(priv->phydev);
 416 +       else
 417 +               return 0;
 418  }
 419
 420  static const struct ethtool_ops ltq_etop_ethtool_ops = {
 421 @@ -339,6 +481,39 @@ static const struct ethtool_ops ltq_etop
 422  };
 423
 424  static int
 425 +ltq_etop_mdio_wr_xr9(struct mii_bus *bus, int phy_addr,
 426 +               int phy_reg, u16 phy_data)
 427 +{
 428 +       u32 val = MDIO_XR9_REQUEST | MDIO_XR9_WRITE |
 429 +               (phy_data << MDIO_XR9_WR_OFFSET) |
 430 +               ((phy_addr & MDIO_XR9_ADDR_MASK) << MDIO_XR9_ADDR_OFFSET) |
 431 +               ((phy_reg & MDIO_XR9_REG_MASK) << MDIO_XR9_REG_OFFSET);
 432 +
 433 +       while (ltq_gbit_r32(LTQ_GBIT_MDIO_CTL) & MDIO_XR9_REQUEST)
 434 +               ;
 435 +       ltq_gbit_w32(val, LTQ_GBIT_MDIO_CTL);
 436 +       while (ltq_gbit_r32(LTQ_GBIT_MDIO_CTL) & MDIO_XR9_REQUEST)
 437 +               ;
 438 +       return 0;
 439 +}
 440 +
 441 +static int
 442 +ltq_etop_mdio_rd_xr9(struct mii_bus *bus, int phy_addr, int phy_reg)
 443 +{
 444 +       u32 val = MDIO_XR9_REQUEST | MDIO_XR9_READ |
 445 +               ((phy_addr & MDIO_XR9_ADDR_MASK) << MDIO_XR9_ADDR_OFFSET) |
 446 +               ((phy_reg & MDIO_XR9_REG_MASK) << MDIO_XR9_REG_OFFSET);
 447 +
 448 +       while (ltq_gbit_r32(LTQ_GBIT_MDIO_CTL) & MDIO_XR9_REQUEST)
 449 +               ;
 450 +       ltq_gbit_w32(val, LTQ_GBIT_MDIO_CTL);
 451 +       while (ltq_gbit_r32(LTQ_GBIT_MDIO_CTL) & MDIO_XR9_REQUEST)
 452 +               ;
 453 +       val = ltq_gbit_r32(LTQ_GBIT_MDIO_DATA) & MDIO_XR9_RD_MASK;
 454 +       return val;
 455 +}
 456 +
 457 +static int
 458  ltq_etop_mdio_wr(struct mii_bus *bus, int phy_addr, int phy_reg, u16 phy_data)
 459  {
 460         u32 val = MDIO_REQUEST |
 461 @@ -379,14 +554,18 @@ ltq_etop_mdio_probe(struct net_device *d
 462  {
 463         struct ltq_etop_priv *priv = netdev_priv(dev);
 464         struct phy_device *phydev = NULL;
 465 -       int phy_addr;
 466 +       u32 phy_supported =  (SUPPORTED_10baseT_Half
 467 +                       | SUPPORTED_10baseT_Full
 468 +                       | SUPPORTED_100baseT_Half
 469 +                       | SUPPORTED_100baseT_Full
 470 +                       | SUPPORTED_Autoneg
 471 +                       | SUPPORTED_MII
 472 +                       | SUPPORTED_TP);
 473
 474 -       for (phy_addr = 0; phy_addr < PHY_MAX_ADDR; phy_addr++) {
 475 -               if (priv->mii_bus->phy_map[phy_addr]) {
 476 -                       phydev = priv->mii_bus->phy_map[phy_addr];
 477 -                       break;
 478 -               }
 479 -       }
 480 +       if (of_machine_is_compatible("lantiq,ase"))
 481 +               phydev = priv->mii_bus->phy_map[8];
 482 +       else
 483 +               phydev = priv->mii_bus->phy_map[0];
 484
 485         if (!phydev) {
 486                 netdev_err(dev, "no PHY found\n");
 487 @@ -394,21 +573,18 @@ ltq_etop_mdio_probe(struct net_device *d
 488         }
 489
 490         phydev = phy_connect(dev, dev_name(&phydev->dev),
 491 -                            &ltq_etop_mdio_link, priv->pldata->mii_mode);
 492 +                       &ltq_etop_mdio_link, priv->mii_mode);
 493
 494         if (IS_ERR(phydev)) {
 495                 netdev_err(dev, "Could not attach to PHY\n");
 496                 return PTR_ERR(phydev);
 497         }
 498
 499 -       phydev->supported &= (SUPPORTED_10baseT_Half
 500 -                             | SUPPORTED_10baseT_Full
 501 -                             | SUPPORTED_100baseT_Half
 502 -                             | SUPPORTED_100baseT_Full
 503 -                             | SUPPORTED_Autoneg
 504 -                             | SUPPORTED_MII
 505 -                             | SUPPORTED_TP);
 506 +       if (of_machine_is_compatible("lantiq,ar9"))
 507 +               phy_supported |= SUPPORTED_1000baseT_Half
 508 +                       | SUPPORTED_1000baseT_Full;
 509
 510 +       phydev->supported &= phy_supported;
 511         phydev->advertising = phydev->supported;
 512         priv->phydev = phydev;
 513         pr_info("%s: attached PHY [%s] (phy_addr=%s, irq=%d)\n",
 514 @@ -433,8 +609,13 @@ ltq_etop_mdio_init(struct net_device *de
 515         }
 516
 517         priv->mii_bus->priv = dev;
 518 -       priv->mii_bus->read = ltq_etop_mdio_rd;
 519 -       priv->mii_bus->write = ltq_etop_mdio_wr;
 520 +       if (of_machine_is_compatible("lantiq,ar9")) {
 521 +               priv->mii_bus->read = ltq_etop_mdio_rd_xr9;
 522 +               priv->mii_bus->write = ltq_etop_mdio_wr_xr9;
 523 +       } else {
 524 +               priv->mii_bus->read = ltq_etop_mdio_rd;
 525 +               priv->mii_bus->write = ltq_etop_mdio_wr;
 526 +       }
 527         priv->mii_bus->name = "ltq_mii";
 528         snprintf(priv->mii_bus->id, MII_BUS_ID_SIZE, "%s-%x",
 529                 priv->pdev->name, priv->pdev->id);
 530 @@ -483,17 +664,19 @@ static int
 531  ltq_etop_open(struct net_device *dev)
 532  {
 533         struct ltq_etop_priv *priv = netdev_priv(dev);
 534 -       int i;
 535 +       unsigned long flags;
 536
 537 -       for (i = 0; i < MAX_DMA_CHAN; i++) {
 538 -               struct ltq_etop_chan *ch = &priv->ch[i];
 539 +       napi_enable(&priv->txch.napi);
 540 +       napi_enable(&priv->rxch.napi);
 541 +
 542 +       spin_lock_irqsave(&priv->lock, flags);
 543 +       ltq_dma_open(&priv->txch.dma);
 544 +       ltq_dma_open(&priv->rxch.dma);
 545 +       spin_unlock_irqrestore(&priv->lock, flags);
 546 +
 547 +       if (priv->phydev)
 548 +               phy_start(priv->phydev);
 549
 550 -               if (!IS_TX(i) && (!IS_RX(i)))
 551 -                       continue;
 552 -               ltq_dma_open(&ch->dma);
 553 -               napi_enable(&ch->napi);
 554 -       }
 555 -       phy_start(priv->phydev);
 556         netif_tx_start_all_queues(dev);
 557         return 0;
 558  }
 559 @@ -502,18 +685,19 @@ static int
 560  ltq_etop_stop(struct net_device *dev)
 561  {
 562         struct ltq_etop_priv *priv = netdev_priv(dev);
 563 -       int i;
 564 +       unsigned long flags;
 565
 566         netif_tx_stop_all_queues(dev);
 567 -       phy_stop(priv->phydev);
 568 -       for (i = 0; i < MAX_DMA_CHAN; i++) {
 569 -               struct ltq_etop_chan *ch = &priv->ch[i];
 570 -
 571 -               if (!IS_RX(i) && !IS_TX(i))
 572 -                       continue;
 573 -               napi_disable(&ch->napi);
 574 -               ltq_dma_close(&ch->dma);
 575 -       }
 576 +       if (priv->phydev)
 577 +               phy_stop(priv->phydev);
 578 +       napi_disable(&priv->txch.napi);
 579 +       napi_disable(&priv->rxch.napi);
 580 +
 581 +       spin_lock_irqsave(&priv->lock, flags);
 582 +       ltq_dma_close(&priv->txch.dma);
 583 +       ltq_dma_close(&priv->rxch.dma);
 584 +       spin_unlock_irqrestore(&priv->lock, flags);
 585 +
 586         return 0;
 587  }
 588
 589 @@ -523,16 +707,16 @@ ltq_etop_tx(struct sk_buff *skb, struct
 590         int queue = skb_get_queue_mapping(skb);
 591         struct netdev_queue *txq = netdev_get_tx_queue(dev, queue);
 592         struct ltq_etop_priv *priv = netdev_priv(dev);
 593 -       struct ltq_etop_chan *ch = &priv->ch[(queue << 1) | 1];
 594 -       struct ltq_dma_desc *desc = &ch->dma.desc_base[ch->dma.desc];
 595 -       int len;
 596 +       struct ltq_dma_desc *desc =
 597 +               &priv->txch.dma.desc_base[priv->txch.dma.desc];
 598         unsigned long flags;
 599         u32 byte_offset;
 600 +       int len;
 601
 602         len = skb->len < ETH_ZLEN ? ETH_ZLEN : skb->len;
 603
 604 -       if ((desc->ctl & (LTQ_DMA_OWN | LTQ_DMA_C)) || ch->skb[ch->dma.desc]) {
 605 -               dev_kfree_skb_any(skb);
 606 +       if ((desc->ctl & (LTQ_DMA_OWN | LTQ_DMA_C)) ||
 607 +                       priv->txch.skb[priv->txch.dma.desc]) {
 608                 netdev_err(dev, "tx ring full\n");
 609                 netif_tx_stop_queue(txq);
 610                 return NETDEV_TX_BUSY;
 611 @@ -540,7 +724,7 @@ ltq_etop_tx(struct sk_buff *skb, struct
 612
 613         /* dma needs to start on a 16 byte aligned address */
 614         byte_offset = CPHYSADDR(skb->data) % 16;
 615 -       ch->skb[ch->dma.desc] = skb;
 616 +       priv->txch.skb[priv->txch.dma.desc] = skb;
 617
 618         dev->trans_start = jiffies;
 619
 620 @@ -550,11 +734,11 @@ ltq_etop_tx(struct sk_buff *skb, struct
 621         wmb();
 622         desc->ctl = LTQ_DMA_OWN | LTQ_DMA_SOP | LTQ_DMA_EOP |
 623                 LTQ_DMA_TX_OFFSET(byte_offset) | (len & LTQ_DMA_SIZE_MASK);
 624 -       ch->dma.desc++;
 625 -       ch->dma.desc %= LTQ_DESC_NUM;
 626 +       priv->txch.dma.desc++;
 627 +       priv->txch.dma.desc %= LTQ_DESC_NUM;
 628         spin_unlock_irqrestore(&priv->lock, flags);
 629
 630 -       if (ch->dma.desc_base[ch->dma.desc].ctl & LTQ_DMA_OWN)
 631 +       if (priv->txch.dma.desc_base[priv->txch.dma.desc].ctl & LTQ_DMA_OWN)
 632                 netif_tx_stop_queue(txq);
 633
 634         return NETDEV_TX_OK;
 635 @@ -633,34 +817,33 @@ ltq_etop_init(struct net_device *dev)
 636         struct ltq_etop_priv *priv = netdev_priv(dev);
 637         struct sockaddr mac;
 638         int err;
 639 -       bool random_mac = false;
 640
 641         ether_setup(dev);
 642         dev->watchdog_timeo = 10 * HZ;
 643         err = ltq_etop_hw_init(dev);
 644         if (err)
 645                 goto err_hw;
 646 +       err = ltq_etop_dma_init(dev);
 647 +       if (err)
 648 +               goto err_hw;
 649 +
 650         ltq_etop_change_mtu(dev, 1500);
 651
 652 -       memcpy(&mac, &priv->pldata->mac, sizeof(struct sockaddr));
 653 +       if (priv->mac)
 654 +               memcpy(&mac.sa_data, priv->mac, ETH_ALEN);
 655         if (!is_valid_ether_addr(mac.sa_data)) {
 656                 pr_warn("etop: invalid MAC, using random\n");
 657 -               eth_random_addr(mac.sa_data);
 658 -               random_mac = true;
 659 +               random_ether_addr(mac.sa_data);
 660         }
 661
 662         err = ltq_etop_set_mac_address(dev, &mac);
 663         if (err)
 664                 goto err_netdev;
 665 -
 666 -       /* Set addr_assign_type here, ltq_etop_set_mac_address would reset it. */
 667 -       if (random_mac)
 668 -               dev->addr_assign_type = NET_ADDR_RANDOM;
 669 -
 670         ltq_etop_set_multicast_list(dev);
 671 -       err = ltq_etop_mdio_init(dev);
 672 -       if (err)
 673 -               goto err_netdev;
 674 +       if (!ltq_etop_mdio_init(dev))
 675 +               dev->ethtool_ops = &ltq_etop_ethtool_ops;
 676 +       else
 677 +               pr_warn("etop: mdio probe failed\n");;
 678         return 0;
 679
 680  err_netdev:
 681 @@ -680,6 +863,9 @@ ltq_etop_tx_timeout(struct net_device *d
 682         err = ltq_etop_hw_init(dev);
 683         if (err)
 684                 goto err_hw;
 685 +       err = ltq_etop_dma_init(dev);
 686 +       if (err)
 687 +               goto err_hw;
 688         dev->trans_start = jiffies;
 689         netif_wake_queue(dev);
 690         return;
 691 @@ -703,14 +889,18 @@ static const struct net_device_ops ltq_e
 692         .ndo_tx_timeout = ltq_etop_tx_timeout,
 693  };
 694
 695 -static int __init
 696 -ltq_etop_probe(struct platform_device *pdev)
 697 +static int ltq_etop_probe(struct platform_device *pdev)
 698  {
 699         struct net_device *dev;
 700         struct ltq_etop_priv *priv;
 701 -       struct resource *res;
 702 +       struct resource *res, *gbit_res, irqres[2];
 703         int err;
 704 -       int i;
 705 +
 706 +       err = of_irq_to_resource_table(pdev->dev.of_node, irqres, 2);
 707 +       if (err != 2) {
 708 +               dev_err(&pdev->dev, "failed to get etop irqs\n");
 709 +               return -EINVAL;
 710 +       }
 711
 712         res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 713         if (!res) {
 714 @@ -736,30 +926,60 @@ ltq_etop_probe(struct platform_device *p
 715                 goto err_out;
 716         }
 717
 718 -       dev = alloc_etherdev_mq(sizeof(struct ltq_etop_priv), 4);
 719 -       if (!dev) {
 720 -               err = -ENOMEM;
 721 -               goto err_out;
 722 +       if (of_machine_is_compatible("lantiq,ar9")) {
 723 +               gbit_res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
 724 +               if (!gbit_res) {
 725 +                       dev_err(&pdev->dev, "failed to get gbit resource\n");
 726 +                       err = -ENOENT;
 727 +                       goto err_out;
 728 +               }
 729 +               ltq_gbit_membase = devm_ioremap_nocache(&pdev->dev,
 730 +                       gbit_res->start, resource_size(gbit_res));
 731 +               if (!ltq_gbit_membase) {
 732 +                       dev_err(&pdev->dev, "failed to remap gigabit switch %d\n",
 733 +                               pdev->id);
 734 +                       err = -ENOMEM;
 735 +                       goto err_out;
 736 +               }
 737         }
 738 +
 739 +       dev = alloc_etherdev_mq(sizeof(struct ltq_etop_priv), 4);
 740         strcpy(dev->name, "eth%d");
 741         dev->netdev_ops = &ltq_eth_netdev_ops;
 742 -       dev->ethtool_ops = &ltq_etop_ethtool_ops;
 743         priv = netdev_priv(dev);
 744         priv->res = res;
 745         priv->pdev = pdev;
 746 -       priv->pldata = dev_get_platdata(&pdev->dev);
 747         priv->netdev = dev;
 748 +       priv->tx_irq = irqres[0].start;
 749 +       priv->rx_irq = irqres[1].start;
 750 +       priv->mii_mode = of_get_phy_mode(pdev->dev.of_node);
 751 +       priv->mac = ltq_get_eth_mac();
 752 +       if (!priv->mac)
 753 +               priv->mac = of_get_mac_address(pdev->dev.of_node);
 754 +
 755 +       priv->clk_ppe = clk_get(&pdev->dev, NULL);
 756 +       if (IS_ERR(priv->clk_ppe))
 757 +               return PTR_ERR(priv->clk_ppe);
 758 +       if (of_machine_is_compatible("lantiq,ar9")) {
 759 +               priv->clk_switch = clk_get(&pdev->dev, "switch");
 760 +               if (IS_ERR(priv->clk_switch))
 761 +                       return PTR_ERR(priv->clk_switch);
 762 +       }
 763 +       if (of_machine_is_compatible("lantiq,ase")) {
 764 +               priv->clk_ephy = clk_get(&pdev->dev, "ephy");
 765 +               if (IS_ERR(priv->clk_ephy))
 766 +                       return PTR_ERR(priv->clk_ephy);
 767 +               priv->clk_ephycgu = clk_get(&pdev->dev, "ephycgu");
 768 +               if (IS_ERR(priv->clk_ephycgu))
 769 +                       return PTR_ERR(priv->clk_ephycgu);
 770 +       }
 771 +
 772         spin_lock_init(&priv->lock);
 773
 774 -       for (i = 0; i < MAX_DMA_CHAN; i++) {
 775 -               if (IS_TX(i))
 776 -                       netif_napi_add(dev, &priv->ch[i].napi,
 777 -                               ltq_etop_poll_tx, 8);
 778 -               else if (IS_RX(i))
 779 -                       netif_napi_add(dev, &priv->ch[i].napi,
 780 -                               ltq_etop_poll_rx, 32);
 781 -               priv->ch[i].netdev = dev;
 782 -       }
 783 +       netif_napi_add(dev, &priv->txch.napi, ltq_etop_poll_tx, 8);
 784 +       netif_napi_add(dev, &priv->rxch.napi, ltq_etop_poll_rx, 32);
 785 +       priv->txch.netdev = dev;
 786 +       priv->rxch.netdev = dev;
 787
 788         err = register_netdev(dev);
 789         if (err)
 790 @@ -788,32 +1008,23 @@ ltq_etop_remove(struct platform_device *
 791         return 0;
 792  }
 793
 794 +static const struct of_device_id ltq_etop_match[] = {
 795 +       { .compatible = "lantiq,etop-xway" },
 796 +       {},
 797 +};
 798 +MODULE_DEVICE_TABLE(of, ltq_etop_match);
 799 +
 800  static struct platform_driver ltq_mii_driver = {
 801 +       .probe = ltq_etop_probe,
 802         .remove = ltq_etop_remove,
 803         .driver = {
 804                 .name = "ltq_etop",
 805                 .owner = THIS_MODULE,
 806 +               .of_match_table = ltq_etop_match,
 807         },
 808  };
 809
 810 -int __init
 811 -init_ltq_etop(void)
 812 -{
 813 -       int ret = platform_driver_probe(&ltq_mii_driver, ltq_etop_probe);
 814 -
 815 -       if (ret)
 816 -               pr_err("ltq_etop: Error registering platform driver!");
 817 -       return ret;
 818 -}
 819 -
 820 -static void __exit
 821 -exit_ltq_etop(void)
 822 -{
 823 -       platform_driver_unregister(&ltq_mii_driver);
 824 -}
 825 -
 826 -module_init(init_ltq_etop);
 827 -module_exit(exit_ltq_etop);
 828 +module_platform_driver(ltq_mii_driver);
 829
 830  MODULE_AUTHOR("John Crispin <blogic@openwrt.org>");
 831  MODULE_DESCRIPTION("Lantiq SoC ETOP");