| 1 | /* |
| 2 | * Driver for the MPC5200 Fast Ethernet Controller |
| 3 | * |
| 4 | * Originally written by Dale Farnsworth <dfarnsworth@mvista.com> and |
| 5 | * now maintained by Sylvain Munaut <tnt@246tNt.com> |
| 6 | * |
| 7 | * Copyright (C) 2007 Domen Puncer, Telargo, Inc. |
| 8 | * Copyright (C) 2007 Sylvain Munaut <tnt@246tNt.com> |
| 9 | * Copyright (C) 2003-2004 MontaVista, Software, Inc. |
| 10 | * |
| 11 | * This file is licensed under the terms of the GNU General Public License |
| 12 | * version 2. This program is licensed "as is" without any warranty of any |
| 13 | * kind, whether express or implied. |
| 14 | * |
| 15 | */ |
| 16 | |
| 17 | #include <linux/module.h> |
| 18 | |
| 19 | #include <linux/kernel.h> |
| 20 | #include <linux/types.h> |
| 21 | #include <linux/spinlock.h> |
| 22 | #include <linux/errno.h> |
| 23 | #include <linux/init.h> |
| 24 | #include <linux/crc32.h> |
| 25 | #include <linux/hardirq.h> |
| 26 | #include <linux/delay.h> |
| 27 | #include <linux/of_device.h> |
| 28 | #include <linux/of_mdio.h> |
| 29 | #include <linux/of_platform.h> |
| 30 | |
| 31 | #include <linux/netdevice.h> |
| 32 | #include <linux/etherdevice.h> |
| 33 | #include <linux/ethtool.h> |
| 34 | #include <linux/skbuff.h> |
| 35 | |
| 36 | #include <asm/io.h> |
| 37 | #include <asm/delay.h> |
| 38 | #include <asm/mpc52xx.h> |
| 39 | |
| 40 | #include <sysdev/bestcomm/bestcomm.h> |
| 41 | #include <sysdev/bestcomm/fec.h> |
| 42 | |
| 43 | #include "fec_mpc52xx.h" |
| 44 | |
| 45 | #define DRIVER_NAME "mpc52xx-fec" |
| 46 | |
| 47 | /* Private driver data structure */ |
| 48 | struct mpc52xx_fec_priv { |
| 49 | struct net_device *ndev; |
| 50 | int duplex; |
| 51 | int speed; |
| 52 | int r_irq; |
| 53 | int t_irq; |
| 54 | struct mpc52xx_fec __iomem *fec; |
| 55 | struct bcom_task *rx_dmatsk; |
| 56 | struct bcom_task *tx_dmatsk; |
| 57 | spinlock_t lock; |
| 58 | int msg_enable; |
| 59 | |
| 60 | /* MDIO link details */ |
| 61 | unsigned int mdio_speed; |
| 62 | struct device_node *phy_node; |
| 63 | struct phy_device *phydev; |
| 64 | enum phy_state link; |
| 65 | int seven_wire_mode; |
| 66 | }; |
| 67 | |
| 68 | |
| 69 | static irqreturn_t mpc52xx_fec_interrupt(int, void *); |
| 70 | static irqreturn_t mpc52xx_fec_rx_interrupt(int, void *); |
| 71 | static irqreturn_t mpc52xx_fec_tx_interrupt(int, void *); |
| 72 | static void mpc52xx_fec_stop(struct net_device *dev); |
| 73 | static void mpc52xx_fec_start(struct net_device *dev); |
| 74 | static void mpc52xx_fec_reset(struct net_device *dev); |
| 75 | |
| 76 | static u8 mpc52xx_fec_mac_addr[6]; |
| 77 | module_param_array_named(mac, mpc52xx_fec_mac_addr, byte, NULL, 0); |
| 78 | MODULE_PARM_DESC(mac, "six hex digits, ie. 0x1,0x2,0xc0,0x01,0xba,0xbe"); |
| 79 | |
| 80 | #define MPC52xx_MESSAGES_DEFAULT ( NETIF_MSG_DRV | NETIF_MSG_PROBE | \ |
| 81 | NETIF_MSG_LINK | NETIF_MSG_IFDOWN | NETIF_MSG_IFUP) |
| 82 | static int debug = -1; /* the above default */ |
| 83 | module_param(debug, int, 0); |
| 84 | MODULE_PARM_DESC(debug, "debugging messages level"); |
| 85 | |
| 86 | static void mpc52xx_fec_tx_timeout(struct net_device *dev) |
| 87 | { |
| 88 | dev_warn(&dev->dev, "transmit timed out\n"); |
| 89 | |
| 90 | mpc52xx_fec_reset(dev); |
| 91 | |
| 92 | dev->stats.tx_errors++; |
| 93 | |
| 94 | netif_wake_queue(dev); |
| 95 | } |
| 96 | |
| 97 | static void mpc52xx_fec_set_paddr(struct net_device *dev, u8 *mac) |
| 98 | { |
| 99 | struct mpc52xx_fec_priv *priv = netdev_priv(dev); |
| 100 | struct mpc52xx_fec __iomem *fec = priv->fec; |
| 101 | |
| 102 | out_be32(&fec->paddr1, *(u32 *)(&mac[0])); |
| 103 | out_be32(&fec->paddr2, (*(u16 *)(&mac[4]) << 16) | FEC_PADDR2_TYPE); |
| 104 | } |
| 105 | |
| 106 | static void mpc52xx_fec_get_paddr(struct net_device *dev, u8 *mac) |
| 107 | { |
| 108 | struct mpc52xx_fec_priv *priv = netdev_priv(dev); |
| 109 | struct mpc52xx_fec __iomem *fec = priv->fec; |
| 110 | |
| 111 | *(u32 *)(&mac[0]) = in_be32(&fec->paddr1); |
| 112 | *(u16 *)(&mac[4]) = in_be32(&fec->paddr2) >> 16; |
| 113 | } |
| 114 | |
| 115 | static int mpc52xx_fec_set_mac_address(struct net_device *dev, void *addr) |
| 116 | { |
| 117 | struct sockaddr *sock = addr; |
| 118 | |
| 119 | memcpy(dev->dev_addr, sock->sa_data, dev->addr_len); |
| 120 | |
| 121 | mpc52xx_fec_set_paddr(dev, sock->sa_data); |
| 122 | return 0; |
| 123 | } |
| 124 | |
| 125 | static void mpc52xx_fec_free_rx_buffers(struct net_device *dev, struct bcom_task *s) |
| 126 | { |
| 127 | while (!bcom_queue_empty(s)) { |
| 128 | struct bcom_fec_bd *bd; |
| 129 | struct sk_buff *skb; |
| 130 | |
| 131 | skb = bcom_retrieve_buffer(s, NULL, (struct bcom_bd **)&bd); |
| 132 | dma_unmap_single(dev->dev.parent, bd->skb_pa, skb->len, |
| 133 | DMA_FROM_DEVICE); |
| 134 | kfree_skb(skb); |
| 135 | } |
| 136 | } |
| 137 | |
| 138 | static int mpc52xx_fec_alloc_rx_buffers(struct net_device *dev, struct bcom_task *rxtsk) |
| 139 | { |
| 140 | while (!bcom_queue_full(rxtsk)) { |
| 141 | struct sk_buff *skb; |
| 142 | struct bcom_fec_bd *bd; |
| 143 | |
| 144 | skb = dev_alloc_skb(FEC_RX_BUFFER_SIZE); |
| 145 | if (skb == NULL) |
| 146 | return -EAGAIN; |
| 147 | |
| 148 | /* zero out the initial receive buffers to aid debugging */ |
| 149 | memset(skb->data, 0, FEC_RX_BUFFER_SIZE); |
| 150 | |
| 151 | bd = (struct bcom_fec_bd *)bcom_prepare_next_buffer(rxtsk); |
| 152 | |
| 153 | bd->status = FEC_RX_BUFFER_SIZE; |
| 154 | bd->skb_pa = dma_map_single(dev->dev.parent, skb->data, |
| 155 | FEC_RX_BUFFER_SIZE, DMA_FROM_DEVICE); |
| 156 | |
| 157 | bcom_submit_next_buffer(rxtsk, skb); |
| 158 | } |
| 159 | |
| 160 | return 0; |
| 161 | } |
| 162 | |
| 163 | /* based on generic_adjust_link from fs_enet-main.c */ |
| 164 | static void mpc52xx_fec_adjust_link(struct net_device *dev) |
| 165 | { |
| 166 | struct mpc52xx_fec_priv *priv = netdev_priv(dev); |
| 167 | struct phy_device *phydev = priv->phydev; |
| 168 | int new_state = 0; |
| 169 | |
| 170 | if (phydev->link != PHY_DOWN) { |
| 171 | if (phydev->duplex != priv->duplex) { |
| 172 | struct mpc52xx_fec __iomem *fec = priv->fec; |
| 173 | u32 rcntrl; |
| 174 | u32 tcntrl; |
| 175 | |
| 176 | new_state = 1; |
| 177 | priv->duplex = phydev->duplex; |
| 178 | |
| 179 | rcntrl = in_be32(&fec->r_cntrl); |
| 180 | tcntrl = in_be32(&fec->x_cntrl); |
| 181 | |
| 182 | rcntrl &= ~FEC_RCNTRL_DRT; |
| 183 | tcntrl &= ~FEC_TCNTRL_FDEN; |
| 184 | if (phydev->duplex == DUPLEX_FULL) |
| 185 | tcntrl |= FEC_TCNTRL_FDEN; /* FD enable */ |
| 186 | else |
| 187 | rcntrl |= FEC_RCNTRL_DRT; /* disable Rx on Tx (HD) */ |
| 188 | |
| 189 | out_be32(&fec->r_cntrl, rcntrl); |
| 190 | out_be32(&fec->x_cntrl, tcntrl); |
| 191 | } |
| 192 | |
| 193 | if (phydev->speed != priv->speed) { |
| 194 | new_state = 1; |
| 195 | priv->speed = phydev->speed; |
| 196 | } |
| 197 | |
| 198 | if (priv->link == PHY_DOWN) { |
| 199 | new_state = 1; |
| 200 | priv->link = phydev->link; |
| 201 | } |
| 202 | |
| 203 | } else if (priv->link) { |
| 204 | new_state = 1; |
| 205 | priv->link = PHY_DOWN; |
| 206 | priv->speed = 0; |
| 207 | priv->duplex = -1; |
| 208 | } |
| 209 | |
| 210 | if (new_state && netif_msg_link(priv)) |
| 211 | phy_print_status(phydev); |
| 212 | } |
| 213 | |
| 214 | static int mpc52xx_fec_open(struct net_device *dev) |
| 215 | { |
| 216 | struct mpc52xx_fec_priv *priv = netdev_priv(dev); |
| 217 | int err = -EBUSY; |
| 218 | |
| 219 | if (priv->phy_node) { |
| 220 | priv->phydev = of_phy_connect(priv->ndev, priv->phy_node, |
| 221 | mpc52xx_fec_adjust_link, 0, 0); |
| 222 | if (!priv->phydev) { |
| 223 | dev_err(&dev->dev, "of_phy_connect failed\n"); |
| 224 | return -ENODEV; |
| 225 | } |
| 226 | phy_start(priv->phydev); |
| 227 | } |
| 228 | |
| 229 | if (request_irq(dev->irq, &mpc52xx_fec_interrupt, IRQF_SHARED, |
| 230 | DRIVER_NAME "_ctrl", dev)) { |
| 231 | dev_err(&dev->dev, "ctrl interrupt request failed\n"); |
| 232 | goto free_phy; |
| 233 | } |
| 234 | if (request_irq(priv->r_irq, &mpc52xx_fec_rx_interrupt, 0, |
| 235 | DRIVER_NAME "_rx", dev)) { |
| 236 | dev_err(&dev->dev, "rx interrupt request failed\n"); |
| 237 | goto free_ctrl_irq; |
| 238 | } |
| 239 | if (request_irq(priv->t_irq, &mpc52xx_fec_tx_interrupt, 0, |
| 240 | DRIVER_NAME "_tx", dev)) { |
| 241 | dev_err(&dev->dev, "tx interrupt request failed\n"); |
| 242 | goto free_2irqs; |
| 243 | } |
| 244 | |
| 245 | bcom_fec_rx_reset(priv->rx_dmatsk); |
| 246 | bcom_fec_tx_reset(priv->tx_dmatsk); |
| 247 | |
| 248 | err = mpc52xx_fec_alloc_rx_buffers(dev, priv->rx_dmatsk); |
| 249 | if (err) { |
| 250 | dev_err(&dev->dev, "mpc52xx_fec_alloc_rx_buffers failed\n"); |
| 251 | goto free_irqs; |
| 252 | } |
| 253 | |
| 254 | bcom_enable(priv->rx_dmatsk); |
| 255 | bcom_enable(priv->tx_dmatsk); |
| 256 | |
| 257 | mpc52xx_fec_start(dev); |
| 258 | |
| 259 | netif_start_queue(dev); |
| 260 | |
| 261 | return 0; |
| 262 | |
| 263 | free_irqs: |
| 264 | free_irq(priv->t_irq, dev); |
| 265 | free_2irqs: |
| 266 | free_irq(priv->r_irq, dev); |
| 267 | free_ctrl_irq: |
| 268 | free_irq(dev->irq, dev); |
| 269 | free_phy: |
| 270 | if (priv->phydev) { |
| 271 | phy_stop(priv->phydev); |
| 272 | phy_disconnect(priv->phydev); |
| 273 | priv->phydev = NULL; |
| 274 | } |
| 275 | |
| 276 | return err; |
| 277 | } |
| 278 | |
| 279 | static int mpc52xx_fec_close(struct net_device *dev) |
| 280 | { |
| 281 | struct mpc52xx_fec_priv *priv = netdev_priv(dev); |
| 282 | |
| 283 | netif_stop_queue(dev); |
| 284 | |
| 285 | mpc52xx_fec_stop(dev); |
| 286 | |
| 287 | mpc52xx_fec_free_rx_buffers(dev, priv->rx_dmatsk); |
| 288 | |
| 289 | free_irq(dev->irq, dev); |
| 290 | free_irq(priv->r_irq, dev); |
| 291 | free_irq(priv->t_irq, dev); |
| 292 | |
| 293 | if (priv->phydev) { |
| 294 | /* power down phy */ |
| 295 | phy_stop(priv->phydev); |
| 296 | phy_disconnect(priv->phydev); |
| 297 | priv->phydev = NULL; |
| 298 | } |
| 299 | |
| 300 | return 0; |
| 301 | } |
| 302 | |
| 303 | /* This will only be invoked if your driver is _not_ in XOFF state. |
| 304 | * What this means is that you need not check it, and that this |
| 305 | * invariant will hold if you make sure that the netif_*_queue() |
| 306 | * calls are done at the proper times. |
| 307 | */ |
| 308 | static int mpc52xx_fec_start_xmit(struct sk_buff *skb, struct net_device *dev) |
| 309 | { |
| 310 | struct mpc52xx_fec_priv *priv = netdev_priv(dev); |
| 311 | struct bcom_fec_bd *bd; |
| 312 | unsigned long flags; |
| 313 | |
| 314 | if (bcom_queue_full(priv->tx_dmatsk)) { |
| 315 | if (net_ratelimit()) |
| 316 | dev_err(&dev->dev, "transmit queue overrun\n"); |
| 317 | return NETDEV_TX_BUSY; |
| 318 | } |
| 319 | |
| 320 | spin_lock_irqsave(&priv->lock, flags); |
| 321 | dev->trans_start = jiffies; |
| 322 | |
| 323 | bd = (struct bcom_fec_bd *) |
| 324 | bcom_prepare_next_buffer(priv->tx_dmatsk); |
| 325 | |
| 326 | bd->status = skb->len | BCOM_FEC_TX_BD_TFD | BCOM_FEC_TX_BD_TC; |
| 327 | bd->skb_pa = dma_map_single(dev->dev.parent, skb->data, skb->len, |
| 328 | DMA_TO_DEVICE); |
| 329 | |
| 330 | bcom_submit_next_buffer(priv->tx_dmatsk, skb); |
| 331 | |
| 332 | if (bcom_queue_full(priv->tx_dmatsk)) { |
| 333 | netif_stop_queue(dev); |
| 334 | } |
| 335 | |
| 336 | spin_unlock_irqrestore(&priv->lock, flags); |
| 337 | |
| 338 | return NETDEV_TX_OK; |
| 339 | } |
| 340 | |
| 341 | #ifdef CONFIG_NET_POLL_CONTROLLER |
| 342 | static void mpc52xx_fec_poll_controller(struct net_device *dev) |
| 343 | { |
| 344 | struct mpc52xx_fec_priv *priv = netdev_priv(dev); |
| 345 | |
| 346 | disable_irq(priv->t_irq); |
| 347 | mpc52xx_fec_tx_interrupt(priv->t_irq, dev); |
| 348 | enable_irq(priv->t_irq); |
| 349 | disable_irq(priv->r_irq); |
| 350 | mpc52xx_fec_rx_interrupt(priv->r_irq, dev); |
| 351 | enable_irq(priv->r_irq); |
| 352 | } |
| 353 | #endif |
| 354 | |
| 355 | |
| 356 | /* This handles BestComm transmit task interrupts |
| 357 | */ |
| 358 | static irqreturn_t mpc52xx_fec_tx_interrupt(int irq, void *dev_id) |
| 359 | { |
| 360 | struct net_device *dev = dev_id; |
| 361 | struct mpc52xx_fec_priv *priv = netdev_priv(dev); |
| 362 | |
| 363 | spin_lock(&priv->lock); |
| 364 | |
| 365 | while (bcom_buffer_done(priv->tx_dmatsk)) { |
| 366 | struct sk_buff *skb; |
| 367 | struct bcom_fec_bd *bd; |
| 368 | skb = bcom_retrieve_buffer(priv->tx_dmatsk, NULL, |
| 369 | (struct bcom_bd **)&bd); |
| 370 | dma_unmap_single(dev->dev.parent, bd->skb_pa, skb->len, |
| 371 | DMA_TO_DEVICE); |
| 372 | |
| 373 | dev_kfree_skb_irq(skb); |
| 374 | } |
| 375 | |
| 376 | netif_wake_queue(dev); |
| 377 | |
| 378 | spin_unlock(&priv->lock); |
| 379 | |
| 380 | return IRQ_HANDLED; |
| 381 | } |
| 382 | |
| 383 | static irqreturn_t mpc52xx_fec_rx_interrupt(int irq, void *dev_id) |
| 384 | { |
| 385 | struct net_device *dev = dev_id; |
| 386 | struct mpc52xx_fec_priv *priv = netdev_priv(dev); |
| 387 | |
| 388 | while (bcom_buffer_done(priv->rx_dmatsk)) { |
| 389 | struct sk_buff *skb; |
| 390 | struct sk_buff *rskb; |
| 391 | struct bcom_fec_bd *bd; |
| 392 | u32 status; |
| 393 | |
| 394 | rskb = bcom_retrieve_buffer(priv->rx_dmatsk, &status, |
| 395 | (struct bcom_bd **)&bd); |
| 396 | dma_unmap_single(dev->dev.parent, bd->skb_pa, rskb->len, |
| 397 | DMA_FROM_DEVICE); |
| 398 | |
| 399 | /* Test for errors in received frame */ |
| 400 | if (status & BCOM_FEC_RX_BD_ERRORS) { |
| 401 | /* Drop packet and reuse the buffer */ |
| 402 | bd = (struct bcom_fec_bd *) |
| 403 | bcom_prepare_next_buffer(priv->rx_dmatsk); |
| 404 | |
| 405 | bd->status = FEC_RX_BUFFER_SIZE; |
| 406 | bd->skb_pa = dma_map_single(dev->dev.parent, |
| 407 | rskb->data, |
| 408 | FEC_RX_BUFFER_SIZE, DMA_FROM_DEVICE); |
| 409 | |
| 410 | bcom_submit_next_buffer(priv->rx_dmatsk, rskb); |
| 411 | |
| 412 | dev->stats.rx_dropped++; |
| 413 | |
| 414 | continue; |
| 415 | } |
| 416 | |
| 417 | /* skbs are allocated on open, so now we allocate a new one, |
| 418 | * and remove the old (with the packet) */ |
| 419 | skb = dev_alloc_skb(FEC_RX_BUFFER_SIZE); |
| 420 | if (skb) { |
| 421 | /* Process the received skb */ |
| 422 | int length = status & BCOM_FEC_RX_BD_LEN_MASK; |
| 423 | |
| 424 | skb_put(rskb, length - 4); /* length without CRC32 */ |
| 425 | |
| 426 | rskb->dev = dev; |
| 427 | rskb->protocol = eth_type_trans(rskb, dev); |
| 428 | |
| 429 | netif_rx(rskb); |
| 430 | } else { |
| 431 | /* Can't get a new one : reuse the same & drop pkt */ |
| 432 | dev_notice(&dev->dev, "Memory squeeze, dropping packet.\n"); |
| 433 | dev->stats.rx_dropped++; |
| 434 | |
| 435 | skb = rskb; |
| 436 | } |
| 437 | |
| 438 | bd = (struct bcom_fec_bd *) |
| 439 | bcom_prepare_next_buffer(priv->rx_dmatsk); |
| 440 | |
| 441 | bd->status = FEC_RX_BUFFER_SIZE; |
| 442 | bd->skb_pa = dma_map_single(dev->dev.parent, skb->data, |
| 443 | FEC_RX_BUFFER_SIZE, DMA_FROM_DEVICE); |
| 444 | |
| 445 | bcom_submit_next_buffer(priv->rx_dmatsk, skb); |
| 446 | } |
| 447 | |
| 448 | return IRQ_HANDLED; |
| 449 | } |
| 450 | |
| 451 | static irqreturn_t mpc52xx_fec_interrupt(int irq, void *dev_id) |
| 452 | { |
| 453 | struct net_device *dev = dev_id; |
| 454 | struct mpc52xx_fec_priv *priv = netdev_priv(dev); |
| 455 | struct mpc52xx_fec __iomem *fec = priv->fec; |
| 456 | u32 ievent; |
| 457 | |
| 458 | ievent = in_be32(&fec->ievent); |
| 459 | |
| 460 | ievent &= ~FEC_IEVENT_MII; /* mii is handled separately */ |
| 461 | if (!ievent) |
| 462 | return IRQ_NONE; |
| 463 | |
| 464 | out_be32(&fec->ievent, ievent); /* clear pending events */ |
| 465 | |
| 466 | /* on fifo error, soft-reset fec */ |
| 467 | if (ievent & (FEC_IEVENT_RFIFO_ERROR | FEC_IEVENT_XFIFO_ERROR)) { |
| 468 | |
| 469 | if (net_ratelimit() && (ievent & FEC_IEVENT_RFIFO_ERROR)) |
| 470 | dev_warn(&dev->dev, "FEC_IEVENT_RFIFO_ERROR\n"); |
| 471 | if (net_ratelimit() && (ievent & FEC_IEVENT_XFIFO_ERROR)) |
| 472 | dev_warn(&dev->dev, "FEC_IEVENT_XFIFO_ERROR\n"); |
| 473 | |
| 474 | mpc52xx_fec_reset(dev); |
| 475 | |
| 476 | netif_wake_queue(dev); |
| 477 | return IRQ_HANDLED; |
| 478 | } |
| 479 | |
| 480 | if (ievent & ~FEC_IEVENT_TFINT) |
| 481 | dev_dbg(&dev->dev, "ievent: %08x\n", ievent); |
| 482 | |
| 483 | return IRQ_HANDLED; |
| 484 | } |
| 485 | |
| 486 | /* |
| 487 | * Get the current statistics. |
| 488 | * This may be called with the card open or closed. |
| 489 | */ |
| 490 | static struct net_device_stats *mpc52xx_fec_get_stats(struct net_device *dev) |
| 491 | { |
| 492 | struct mpc52xx_fec_priv *priv = netdev_priv(dev); |
| 493 | struct net_device_stats *stats = &dev->stats; |
| 494 | struct mpc52xx_fec __iomem *fec = priv->fec; |
| 495 | |
| 496 | stats->rx_bytes = in_be32(&fec->rmon_r_octets); |
| 497 | stats->rx_packets = in_be32(&fec->rmon_r_packets); |
| 498 | stats->rx_errors = in_be32(&fec->rmon_r_crc_align) + |
| 499 | in_be32(&fec->rmon_r_undersize) + |
| 500 | in_be32(&fec->rmon_r_oversize) + |
| 501 | in_be32(&fec->rmon_r_frag) + |
| 502 | in_be32(&fec->rmon_r_jab); |
| 503 | |
| 504 | stats->tx_bytes = in_be32(&fec->rmon_t_octets); |
| 505 | stats->tx_packets = in_be32(&fec->rmon_t_packets); |
| 506 | stats->tx_errors = in_be32(&fec->rmon_t_crc_align) + |
| 507 | in_be32(&fec->rmon_t_undersize) + |
| 508 | in_be32(&fec->rmon_t_oversize) + |
| 509 | in_be32(&fec->rmon_t_frag) + |
| 510 | in_be32(&fec->rmon_t_jab); |
| 511 | |
| 512 | stats->multicast = in_be32(&fec->rmon_r_mc_pkt); |
| 513 | stats->collisions = in_be32(&fec->rmon_t_col); |
| 514 | |
| 515 | /* detailed rx_errors: */ |
| 516 | stats->rx_length_errors = in_be32(&fec->rmon_r_undersize) |
| 517 | + in_be32(&fec->rmon_r_oversize) |
| 518 | + in_be32(&fec->rmon_r_frag) |
| 519 | + in_be32(&fec->rmon_r_jab); |
| 520 | stats->rx_over_errors = in_be32(&fec->r_macerr); |
| 521 | stats->rx_crc_errors = in_be32(&fec->ieee_r_crc); |
| 522 | stats->rx_frame_errors = in_be32(&fec->ieee_r_align); |
| 523 | stats->rx_fifo_errors = in_be32(&fec->rmon_r_drop); |
| 524 | stats->rx_missed_errors = in_be32(&fec->rmon_r_drop); |
| 525 | |
| 526 | /* detailed tx_errors: */ |
| 527 | stats->tx_aborted_errors = 0; |
| 528 | stats->tx_carrier_errors = in_be32(&fec->ieee_t_cserr); |
| 529 | stats->tx_fifo_errors = in_be32(&fec->rmon_t_drop); |
| 530 | stats->tx_heartbeat_errors = in_be32(&fec->ieee_t_sqe); |
| 531 | stats->tx_window_errors = in_be32(&fec->ieee_t_lcol); |
| 532 | |
| 533 | return stats; |
| 534 | } |
| 535 | |
| 536 | /* |
| 537 | * Read MIB counters in order to reset them, |
| 538 | * then zero all the stats fields in memory |
| 539 | */ |
| 540 | static void mpc52xx_fec_reset_stats(struct net_device *dev) |
| 541 | { |
| 542 | struct mpc52xx_fec_priv *priv = netdev_priv(dev); |
| 543 | struct mpc52xx_fec __iomem *fec = priv->fec; |
| 544 | |
| 545 | out_be32(&fec->mib_control, FEC_MIB_DISABLE); |
| 546 | memset_io(&fec->rmon_t_drop, 0, |
| 547 | offsetof(struct mpc52xx_fec, reserved10) - |
| 548 | offsetof(struct mpc52xx_fec, rmon_t_drop)); |
| 549 | out_be32(&fec->mib_control, 0); |
| 550 | |
| 551 | memset(&dev->stats, 0, sizeof(dev->stats)); |
| 552 | } |
| 553 | |
| 554 | /* |
| 555 | * Set or clear the multicast filter for this adaptor. |
| 556 | */ |
| 557 | static void mpc52xx_fec_set_multicast_list(struct net_device *dev) |
| 558 | { |
| 559 | struct mpc52xx_fec_priv *priv = netdev_priv(dev); |
| 560 | struct mpc52xx_fec __iomem *fec = priv->fec; |
| 561 | u32 rx_control; |
| 562 | |
| 563 | rx_control = in_be32(&fec->r_cntrl); |
| 564 | |
| 565 | if (dev->flags & IFF_PROMISC) { |
| 566 | rx_control |= FEC_RCNTRL_PROM; |
| 567 | out_be32(&fec->r_cntrl, rx_control); |
| 568 | } else { |
| 569 | rx_control &= ~FEC_RCNTRL_PROM; |
| 570 | out_be32(&fec->r_cntrl, rx_control); |
| 571 | |
| 572 | if (dev->flags & IFF_ALLMULTI) { |
| 573 | out_be32(&fec->gaddr1, 0xffffffff); |
| 574 | out_be32(&fec->gaddr2, 0xffffffff); |
| 575 | } else { |
| 576 | u32 crc; |
| 577 | int i; |
| 578 | struct dev_mc_list *dmi; |
| 579 | u32 gaddr1 = 0x00000000; |
| 580 | u32 gaddr2 = 0x00000000; |
| 581 | |
| 582 | dmi = dev->mc_list; |
| 583 | for (i=0; i<dev->mc_count; i++) { |
| 584 | crc = ether_crc_le(6, dmi->dmi_addr) >> 26; |
| 585 | if (crc >= 32) |
| 586 | gaddr1 |= 1 << (crc-32); |
| 587 | else |
| 588 | gaddr2 |= 1 << crc; |
| 589 | dmi = dmi->next; |
| 590 | } |
| 591 | out_be32(&fec->gaddr1, gaddr1); |
| 592 | out_be32(&fec->gaddr2, gaddr2); |
| 593 | } |
| 594 | } |
| 595 | } |
| 596 | |
| 597 | /** |
| 598 | * mpc52xx_fec_hw_init |
| 599 | * @dev: network device |
| 600 | * |
| 601 | * Setup various hardware setting, only needed once on start |
| 602 | */ |
| 603 | static void mpc52xx_fec_hw_init(struct net_device *dev) |
| 604 | { |
| 605 | struct mpc52xx_fec_priv *priv = netdev_priv(dev); |
| 606 | struct mpc52xx_fec __iomem *fec = priv->fec; |
| 607 | int i; |
| 608 | |
| 609 | /* Whack a reset. We should wait for this. */ |
| 610 | out_be32(&fec->ecntrl, FEC_ECNTRL_RESET); |
| 611 | for (i = 0; i < FEC_RESET_DELAY; ++i) { |
| 612 | if ((in_be32(&fec->ecntrl) & FEC_ECNTRL_RESET) == 0) |
| 613 | break; |
| 614 | udelay(1); |
| 615 | } |
| 616 | if (i == FEC_RESET_DELAY) |
| 617 | dev_err(&dev->dev, "FEC Reset timeout!\n"); |
| 618 | |
| 619 | /* set pause to 0x20 frames */ |
| 620 | out_be32(&fec->op_pause, FEC_OP_PAUSE_OPCODE | 0x20); |
| 621 | |
| 622 | /* high service request will be deasserted when there's < 7 bytes in fifo |
| 623 | * low service request will be deasserted when there's < 4*7 bytes in fifo |
| 624 | */ |
| 625 | out_be32(&fec->rfifo_cntrl, FEC_FIFO_CNTRL_FRAME | FEC_FIFO_CNTRL_LTG_7); |
| 626 | out_be32(&fec->tfifo_cntrl, FEC_FIFO_CNTRL_FRAME | FEC_FIFO_CNTRL_LTG_7); |
| 627 | |
| 628 | /* alarm when <= x bytes in FIFO */ |
| 629 | out_be32(&fec->rfifo_alarm, 0x0000030c); |
| 630 | out_be32(&fec->tfifo_alarm, 0x00000100); |
| 631 | |
| 632 | /* begin transmittion when 256 bytes are in FIFO (or EOF or FIFO full) */ |
| 633 | out_be32(&fec->x_wmrk, FEC_FIFO_WMRK_256B); |
| 634 | |
| 635 | /* enable crc generation */ |
| 636 | out_be32(&fec->xmit_fsm, FEC_XMIT_FSM_APPEND_CRC | FEC_XMIT_FSM_ENABLE_CRC); |
| 637 | out_be32(&fec->iaddr1, 0x00000000); /* No individual filter */ |
| 638 | out_be32(&fec->iaddr2, 0x00000000); /* No individual filter */ |
| 639 | |
| 640 | /* set phy speed. |
| 641 | * this can't be done in phy driver, since it needs to be called |
| 642 | * before fec stuff (even on resume) */ |
| 643 | out_be32(&fec->mii_speed, priv->mdio_speed); |
| 644 | } |
| 645 | |
| 646 | /** |
| 647 | * mpc52xx_fec_start |
| 648 | * @dev: network device |
| 649 | * |
| 650 | * This function is called to start or restart the FEC during a link |
| 651 | * change. This happens on fifo errors or when switching between half |
| 652 | * and full duplex. |
| 653 | */ |
| 654 | static void mpc52xx_fec_start(struct net_device *dev) |
| 655 | { |
| 656 | struct mpc52xx_fec_priv *priv = netdev_priv(dev); |
| 657 | struct mpc52xx_fec __iomem *fec = priv->fec; |
| 658 | u32 rcntrl; |
| 659 | u32 tcntrl; |
| 660 | u32 tmp; |
| 661 | |
| 662 | /* clear sticky error bits */ |
| 663 | tmp = FEC_FIFO_STATUS_ERR | FEC_FIFO_STATUS_UF | FEC_FIFO_STATUS_OF; |
| 664 | out_be32(&fec->rfifo_status, in_be32(&fec->rfifo_status) & tmp); |
| 665 | out_be32(&fec->tfifo_status, in_be32(&fec->tfifo_status) & tmp); |
| 666 | |
| 667 | /* FIFOs will reset on mpc52xx_fec_enable */ |
| 668 | out_be32(&fec->reset_cntrl, FEC_RESET_CNTRL_ENABLE_IS_RESET); |
| 669 | |
| 670 | /* Set station address. */ |
| 671 | mpc52xx_fec_set_paddr(dev, dev->dev_addr); |
| 672 | |
| 673 | mpc52xx_fec_set_multicast_list(dev); |
| 674 | |
| 675 | /* set max frame len, enable flow control, select mii mode */ |
| 676 | rcntrl = FEC_RX_BUFFER_SIZE << 16; /* max frame length */ |
| 677 | rcntrl |= FEC_RCNTRL_FCE; |
| 678 | |
| 679 | if (!priv->seven_wire_mode) |
| 680 | rcntrl |= FEC_RCNTRL_MII_MODE; |
| 681 | |
| 682 | if (priv->duplex == DUPLEX_FULL) |
| 683 | tcntrl = FEC_TCNTRL_FDEN; /* FD enable */ |
| 684 | else { |
| 685 | rcntrl |= FEC_RCNTRL_DRT; /* disable Rx on Tx (HD) */ |
| 686 | tcntrl = 0; |
| 687 | } |
| 688 | out_be32(&fec->r_cntrl, rcntrl); |
| 689 | out_be32(&fec->x_cntrl, tcntrl); |
| 690 | |
| 691 | /* Clear any outstanding interrupt. */ |
| 692 | out_be32(&fec->ievent, 0xffffffff); |
| 693 | |
| 694 | /* Enable interrupts we wish to service. */ |
| 695 | out_be32(&fec->imask, FEC_IMASK_ENABLE); |
| 696 | |
| 697 | /* And last, enable the transmit and receive processing. */ |
| 698 | out_be32(&fec->ecntrl, FEC_ECNTRL_ETHER_EN); |
| 699 | out_be32(&fec->r_des_active, 0x01000000); |
| 700 | } |
| 701 | |
| 702 | /** |
| 703 | * mpc52xx_fec_stop |
| 704 | * @dev: network device |
| 705 | * |
| 706 | * stop all activity on fec and empty dma buffers |
| 707 | */ |
| 708 | static void mpc52xx_fec_stop(struct net_device *dev) |
| 709 | { |
| 710 | struct mpc52xx_fec_priv *priv = netdev_priv(dev); |
| 711 | struct mpc52xx_fec __iomem *fec = priv->fec; |
| 712 | unsigned long timeout; |
| 713 | |
| 714 | /* disable all interrupts */ |
| 715 | out_be32(&fec->imask, 0); |
| 716 | |
| 717 | /* Disable the rx task. */ |
| 718 | bcom_disable(priv->rx_dmatsk); |
| 719 | |
| 720 | /* Wait for tx queue to drain, but only if we're in process context */ |
| 721 | if (!in_interrupt()) { |
| 722 | timeout = jiffies + msecs_to_jiffies(2000); |
| 723 | while (time_before(jiffies, timeout) && |
| 724 | !bcom_queue_empty(priv->tx_dmatsk)) |
| 725 | msleep(100); |
| 726 | |
| 727 | if (time_after_eq(jiffies, timeout)) |
| 728 | dev_err(&dev->dev, "queues didn't drain\n"); |
| 729 | #if 1 |
| 730 | if (time_after_eq(jiffies, timeout)) { |
| 731 | dev_err(&dev->dev, " tx: index: %i, outdex: %i\n", |
| 732 | priv->tx_dmatsk->index, |
| 733 | priv->tx_dmatsk->outdex); |
| 734 | dev_err(&dev->dev, " rx: index: %i, outdex: %i\n", |
| 735 | priv->rx_dmatsk->index, |
| 736 | priv->rx_dmatsk->outdex); |
| 737 | } |
| 738 | #endif |
| 739 | } |
| 740 | |
| 741 | bcom_disable(priv->tx_dmatsk); |
| 742 | |
| 743 | /* Stop FEC */ |
| 744 | out_be32(&fec->ecntrl, in_be32(&fec->ecntrl) & ~FEC_ECNTRL_ETHER_EN); |
| 745 | } |
| 746 | |
| 747 | /* reset fec and bestcomm tasks */ |
| 748 | static void mpc52xx_fec_reset(struct net_device *dev) |
| 749 | { |
| 750 | struct mpc52xx_fec_priv *priv = netdev_priv(dev); |
| 751 | struct mpc52xx_fec __iomem *fec = priv->fec; |
| 752 | |
| 753 | mpc52xx_fec_stop(dev); |
| 754 | |
| 755 | out_be32(&fec->rfifo_status, in_be32(&fec->rfifo_status)); |
| 756 | out_be32(&fec->reset_cntrl, FEC_RESET_CNTRL_RESET_FIFO); |
| 757 | |
| 758 | mpc52xx_fec_free_rx_buffers(dev, priv->rx_dmatsk); |
| 759 | |
| 760 | mpc52xx_fec_hw_init(dev); |
| 761 | |
| 762 | if (priv->phydev) { |
| 763 | phy_stop(priv->phydev); |
| 764 | phy_write(priv->phydev, MII_BMCR, BMCR_RESET); |
| 765 | phy_start(priv->phydev); |
| 766 | } |
| 767 | |
| 768 | bcom_fec_rx_reset(priv->rx_dmatsk); |
| 769 | bcom_fec_tx_reset(priv->tx_dmatsk); |
| 770 | |
| 771 | mpc52xx_fec_alloc_rx_buffers(dev, priv->rx_dmatsk); |
| 772 | |
| 773 | bcom_enable(priv->rx_dmatsk); |
| 774 | bcom_enable(priv->tx_dmatsk); |
| 775 | |
| 776 | mpc52xx_fec_start(dev); |
| 777 | } |
| 778 | |
| 779 | |
| 780 | /* ethtool interface */ |
| 781 | static void mpc52xx_fec_get_drvinfo(struct net_device *dev, |
| 782 | struct ethtool_drvinfo *info) |
| 783 | { |
| 784 | strcpy(info->driver, DRIVER_NAME); |
| 785 | } |
| 786 | |
| 787 | static int mpc52xx_fec_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) |
| 788 | { |
| 789 | struct mpc52xx_fec_priv *priv = netdev_priv(dev); |
| 790 | |
| 791 | if (!priv->phydev) |
| 792 | return -ENODEV; |
| 793 | |
| 794 | return phy_ethtool_gset(priv->phydev, cmd); |
| 795 | } |
| 796 | |
| 797 | static int mpc52xx_fec_set_settings(struct net_device *dev, struct ethtool_cmd *cmd) |
| 798 | { |
| 799 | struct mpc52xx_fec_priv *priv = netdev_priv(dev); |
| 800 | |
| 801 | if (!priv->phydev) |
| 802 | return -ENODEV; |
| 803 | |
| 804 | return phy_ethtool_sset(priv->phydev, cmd); |
| 805 | } |
| 806 | |
| 807 | static u32 mpc52xx_fec_get_msglevel(struct net_device *dev) |
| 808 | { |
| 809 | struct mpc52xx_fec_priv *priv = netdev_priv(dev); |
| 810 | return priv->msg_enable; |
| 811 | } |
| 812 | |
| 813 | static void mpc52xx_fec_set_msglevel(struct net_device *dev, u32 level) |
| 814 | { |
| 815 | struct mpc52xx_fec_priv *priv = netdev_priv(dev); |
| 816 | priv->msg_enable = level; |
| 817 | } |
| 818 | |
| 819 | static const struct ethtool_ops mpc52xx_fec_ethtool_ops = { |
| 820 | .get_drvinfo = mpc52xx_fec_get_drvinfo, |
| 821 | .get_settings = mpc52xx_fec_get_settings, |
| 822 | .set_settings = mpc52xx_fec_set_settings, |
| 823 | .get_link = ethtool_op_get_link, |
| 824 | .get_msglevel = mpc52xx_fec_get_msglevel, |
| 825 | .set_msglevel = mpc52xx_fec_set_msglevel, |
| 826 | }; |
| 827 | |
| 828 | |
| 829 | static int mpc52xx_fec_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) |
| 830 | { |
| 831 | struct mpc52xx_fec_priv *priv = netdev_priv(dev); |
| 832 | |
| 833 | if (!priv->phydev) |
| 834 | return -ENOTSUPP; |
| 835 | |
| 836 | return phy_mii_ioctl(priv->phydev, if_mii(rq), cmd); |
| 837 | } |
| 838 | |
| 839 | static const struct net_device_ops mpc52xx_fec_netdev_ops = { |
| 840 | .ndo_open = mpc52xx_fec_open, |
| 841 | .ndo_stop = mpc52xx_fec_close, |
| 842 | .ndo_start_xmit = mpc52xx_fec_start_xmit, |
| 843 | .ndo_set_multicast_list = mpc52xx_fec_set_multicast_list, |
| 844 | .ndo_set_mac_address = mpc52xx_fec_set_mac_address, |
| 845 | .ndo_validate_addr = eth_validate_addr, |
| 846 | .ndo_do_ioctl = mpc52xx_fec_ioctl, |
| 847 | .ndo_change_mtu = eth_change_mtu, |
| 848 | .ndo_tx_timeout = mpc52xx_fec_tx_timeout, |
| 849 | .ndo_get_stats = mpc52xx_fec_get_stats, |
| 850 | #ifdef CONFIG_NET_POLL_CONTROLLER |
| 851 | .ndo_poll_controller = mpc52xx_fec_poll_controller, |
| 852 | #endif |
| 853 | }; |
| 854 | |
| 855 | /* ======================================================================== */ |
| 856 | /* OF Driver */ |
| 857 | /* ======================================================================== */ |
| 858 | |
| 859 | static int __devinit |
| 860 | mpc52xx_fec_probe(struct of_device *op, const struct of_device_id *match) |
| 861 | { |
| 862 | int rv; |
| 863 | struct net_device *ndev; |
| 864 | struct mpc52xx_fec_priv *priv = NULL; |
| 865 | struct resource mem; |
| 866 | const u32 *prop; |
| 867 | int prop_size; |
| 868 | |
| 869 | phys_addr_t rx_fifo; |
| 870 | phys_addr_t tx_fifo; |
| 871 | |
| 872 | /* Get the ether ndev & it's private zone */ |
| 873 | ndev = alloc_etherdev(sizeof(struct mpc52xx_fec_priv)); |
| 874 | if (!ndev) |
| 875 | return -ENOMEM; |
| 876 | |
| 877 | priv = netdev_priv(ndev); |
| 878 | priv->ndev = ndev; |
| 879 | |
| 880 | /* Reserve FEC control zone */ |
| 881 | rv = of_address_to_resource(op->node, 0, &mem); |
| 882 | if (rv) { |
| 883 | printk(KERN_ERR DRIVER_NAME ": " |
| 884 | "Error while parsing device node resource\n" ); |
| 885 | return rv; |
| 886 | } |
| 887 | if ((mem.end - mem.start + 1) < sizeof(struct mpc52xx_fec)) { |
| 888 | printk(KERN_ERR DRIVER_NAME |
| 889 | " - invalid resource size (%lx < %x), check mpc52xx_devices.c\n", |
| 890 | (unsigned long)(mem.end - mem.start + 1), sizeof(struct mpc52xx_fec)); |
| 891 | return -EINVAL; |
| 892 | } |
| 893 | |
| 894 | if (!request_mem_region(mem.start, sizeof(struct mpc52xx_fec), DRIVER_NAME)) |
| 895 | return -EBUSY; |
| 896 | |
| 897 | /* Init ether ndev with what we have */ |
| 898 | ndev->netdev_ops = &mpc52xx_fec_netdev_ops; |
| 899 | ndev->ethtool_ops = &mpc52xx_fec_ethtool_ops; |
| 900 | ndev->watchdog_timeo = FEC_WATCHDOG_TIMEOUT; |
| 901 | ndev->base_addr = mem.start; |
| 902 | SET_NETDEV_DEV(ndev, &op->dev); |
| 903 | |
| 904 | spin_lock_init(&priv->lock); |
| 905 | |
| 906 | /* ioremap the zones */ |
| 907 | priv->fec = ioremap(mem.start, sizeof(struct mpc52xx_fec)); |
| 908 | |
| 909 | if (!priv->fec) { |
| 910 | rv = -ENOMEM; |
| 911 | goto probe_error; |
| 912 | } |
| 913 | |
| 914 | /* Bestcomm init */ |
| 915 | rx_fifo = ndev->base_addr + offsetof(struct mpc52xx_fec, rfifo_data); |
| 916 | tx_fifo = ndev->base_addr + offsetof(struct mpc52xx_fec, tfifo_data); |
| 917 | |
| 918 | priv->rx_dmatsk = bcom_fec_rx_init(FEC_RX_NUM_BD, rx_fifo, FEC_RX_BUFFER_SIZE); |
| 919 | priv->tx_dmatsk = bcom_fec_tx_init(FEC_TX_NUM_BD, tx_fifo); |
| 920 | |
| 921 | if (!priv->rx_dmatsk || !priv->tx_dmatsk) { |
| 922 | printk(KERN_ERR DRIVER_NAME ": Can not init SDMA tasks\n" ); |
| 923 | rv = -ENOMEM; |
| 924 | goto probe_error; |
| 925 | } |
| 926 | |
| 927 | /* Get the IRQ we need one by one */ |
| 928 | /* Control */ |
| 929 | ndev->irq = irq_of_parse_and_map(op->node, 0); |
| 930 | |
| 931 | /* RX */ |
| 932 | priv->r_irq = bcom_get_task_irq(priv->rx_dmatsk); |
| 933 | |
| 934 | /* TX */ |
| 935 | priv->t_irq = bcom_get_task_irq(priv->tx_dmatsk); |
| 936 | |
| 937 | /* MAC address init */ |
| 938 | if (!is_zero_ether_addr(mpc52xx_fec_mac_addr)) |
| 939 | memcpy(ndev->dev_addr, mpc52xx_fec_mac_addr, 6); |
| 940 | else |
| 941 | mpc52xx_fec_get_paddr(ndev, ndev->dev_addr); |
| 942 | |
| 943 | priv->msg_enable = netif_msg_init(debug, MPC52xx_MESSAGES_DEFAULT); |
| 944 | |
| 945 | /* |
| 946 | * Link mode configuration |
| 947 | */ |
| 948 | |
| 949 | /* Start with safe defaults for link connection */ |
| 950 | priv->speed = 100; |
| 951 | priv->duplex = DUPLEX_HALF; |
| 952 | priv->mdio_speed = ((mpc5xxx_get_bus_frequency(op->node) >> 20) / 5) << 1; |
| 953 | |
| 954 | /* The current speed preconfigures the speed of the MII link */ |
| 955 | prop = of_get_property(op->node, "current-speed", &prop_size); |
| 956 | if (prop && (prop_size >= sizeof(u32) * 2)) { |
| 957 | priv->speed = prop[0]; |
| 958 | priv->duplex = prop[1] ? DUPLEX_FULL : DUPLEX_HALF; |
| 959 | } |
| 960 | |
| 961 | /* If there is a phy handle, then get the PHY node */ |
| 962 | priv->phy_node = of_parse_phandle(op->node, "phy-handle", 0); |
| 963 | |
| 964 | /* the 7-wire property means don't use MII mode */ |
| 965 | if (of_find_property(op->node, "fsl,7-wire-mode", NULL)) { |
| 966 | priv->seven_wire_mode = 1; |
| 967 | dev_info(&ndev->dev, "using 7-wire PHY mode\n"); |
| 968 | } |
| 969 | |
| 970 | /* Hardware init */ |
| 971 | mpc52xx_fec_hw_init(ndev); |
| 972 | mpc52xx_fec_reset_stats(ndev); |
| 973 | |
| 974 | rv = register_netdev(ndev); |
| 975 | if (rv < 0) |
| 976 | goto probe_error; |
| 977 | |
| 978 | /* We're done ! */ |
| 979 | dev_set_drvdata(&op->dev, ndev); |
| 980 | |
| 981 | return 0; |
| 982 | |
| 983 | |
| 984 | /* Error handling - free everything that might be allocated */ |
| 985 | probe_error: |
| 986 | |
| 987 | if (priv->phy_node) |
| 988 | of_node_put(priv->phy_node); |
| 989 | priv->phy_node = NULL; |
| 990 | |
| 991 | irq_dispose_mapping(ndev->irq); |
| 992 | |
| 993 | if (priv->rx_dmatsk) |
| 994 | bcom_fec_rx_release(priv->rx_dmatsk); |
| 995 | if (priv->tx_dmatsk) |
| 996 | bcom_fec_tx_release(priv->tx_dmatsk); |
| 997 | |
| 998 | if (priv->fec) |
| 999 | iounmap(priv->fec); |
| 1000 | |
| 1001 | release_mem_region(mem.start, sizeof(struct mpc52xx_fec)); |
| 1002 | |
| 1003 | free_netdev(ndev); |
| 1004 | |
| 1005 | return rv; |
| 1006 | } |
| 1007 | |
| 1008 | static int |
| 1009 | mpc52xx_fec_remove(struct of_device *op) |
| 1010 | { |
| 1011 | struct net_device *ndev; |
| 1012 | struct mpc52xx_fec_priv *priv; |
| 1013 | |
| 1014 | ndev = dev_get_drvdata(&op->dev); |
| 1015 | priv = netdev_priv(ndev); |
| 1016 | |
| 1017 | unregister_netdev(ndev); |
| 1018 | |
| 1019 | if (priv->phy_node) |
| 1020 | of_node_put(priv->phy_node); |
| 1021 | priv->phy_node = NULL; |
| 1022 | |
| 1023 | irq_dispose_mapping(ndev->irq); |
| 1024 | |
| 1025 | bcom_fec_rx_release(priv->rx_dmatsk); |
| 1026 | bcom_fec_tx_release(priv->tx_dmatsk); |
| 1027 | |
| 1028 | iounmap(priv->fec); |
| 1029 | |
| 1030 | release_mem_region(ndev->base_addr, sizeof(struct mpc52xx_fec)); |
| 1031 | |
| 1032 | free_netdev(ndev); |
| 1033 | |
| 1034 | dev_set_drvdata(&op->dev, NULL); |
| 1035 | return 0; |
| 1036 | } |
| 1037 | |
| 1038 | #ifdef CONFIG_PM |
| 1039 | static int mpc52xx_fec_of_suspend(struct of_device *op, pm_message_t state) |
| 1040 | { |
| 1041 | struct net_device *dev = dev_get_drvdata(&op->dev); |
| 1042 | |
| 1043 | if (netif_running(dev)) |
| 1044 | mpc52xx_fec_close(dev); |
| 1045 | |
| 1046 | return 0; |
| 1047 | } |
| 1048 | |
| 1049 | static int mpc52xx_fec_of_resume(struct of_device *op) |
| 1050 | { |
| 1051 | struct net_device *dev = dev_get_drvdata(&op->dev); |
| 1052 | |
| 1053 | mpc52xx_fec_hw_init(dev); |
| 1054 | mpc52xx_fec_reset_stats(dev); |
| 1055 | |
| 1056 | if (netif_running(dev)) |
| 1057 | mpc52xx_fec_open(dev); |
| 1058 | |
| 1059 | return 0; |
| 1060 | } |
| 1061 | #endif |
| 1062 | |
| 1063 | static struct of_device_id mpc52xx_fec_match[] = { |
| 1064 | { .compatible = "fsl,mpc5200b-fec", }, |
| 1065 | { .compatible = "fsl,mpc5200-fec", }, |
| 1066 | { .compatible = "mpc5200-fec", }, |
| 1067 | { } |
| 1068 | }; |
| 1069 | |
| 1070 | MODULE_DEVICE_TABLE(of, mpc52xx_fec_match); |
| 1071 | |
| 1072 | static struct of_platform_driver mpc52xx_fec_driver = { |
| 1073 | .owner = THIS_MODULE, |
| 1074 | .name = DRIVER_NAME, |
| 1075 | .match_table = mpc52xx_fec_match, |
| 1076 | .probe = mpc52xx_fec_probe, |
| 1077 | .remove = mpc52xx_fec_remove, |
| 1078 | #ifdef CONFIG_PM |
| 1079 | .suspend = mpc52xx_fec_of_suspend, |
| 1080 | .resume = mpc52xx_fec_of_resume, |
| 1081 | #endif |
| 1082 | }; |
| 1083 | |
| 1084 | |
| 1085 | /* ======================================================================== */ |
| 1086 | /* Module */ |
| 1087 | /* ======================================================================== */ |
| 1088 | |
| 1089 | static int __init |
| 1090 | mpc52xx_fec_init(void) |
| 1091 | { |
| 1092 | #ifdef CONFIG_FEC_MPC52xx_MDIO |
| 1093 | int ret; |
| 1094 | ret = of_register_platform_driver(&mpc52xx_fec_mdio_driver); |
| 1095 | if (ret) { |
| 1096 | printk(KERN_ERR DRIVER_NAME ": failed to register mdio driver\n"); |
| 1097 | return ret; |
| 1098 | } |
| 1099 | #endif |
| 1100 | return of_register_platform_driver(&mpc52xx_fec_driver); |
| 1101 | } |
| 1102 | |
| 1103 | static void __exit |
| 1104 | mpc52xx_fec_exit(void) |
| 1105 | { |
| 1106 | of_unregister_platform_driver(&mpc52xx_fec_driver); |
| 1107 | #ifdef CONFIG_FEC_MPC52xx_MDIO |
| 1108 | of_unregister_platform_driver(&mpc52xx_fec_mdio_driver); |
| 1109 | #endif |
| 1110 | } |
| 1111 | |
| 1112 | |
| 1113 | module_init(mpc52xx_fec_init); |
| 1114 | module_exit(mpc52xx_fec_exit); |
| 1115 | |
| 1116 | MODULE_LICENSE("GPL"); |
| 1117 | MODULE_AUTHOR("Dale Farnsworth"); |
| 1118 | MODULE_DESCRIPTION("Ethernet driver for the Freescale MPC52xx FEC"); |