2 * This program is free software; you can redistribute it and/or modify
3 * it under the terms of the GNU General Public License as published by
4 * the Free Software Foundation; version 2 of the License
6 * This program is distributed in the hope that it will be useful,
7 * but WITHOUT ANY WARRANTY; without even the implied warranty of
8 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
9 * GNU General Public License for more details.
11 * You should have received a copy of the GNU General Public License
12 * along with this program; if not, write to the Free Software
13 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
15 * Copyright (C) 2009 John Crispin <blogic@openwrt.org>
18 #include <linux/module.h>
19 #include <linux/kernel.h>
20 #include <linux/types.h>
21 #include <linux/dma-mapping.h>
22 #include <linux/init.h>
23 #include <linux/skbuff.h>
24 #include <linux/etherdevice.h>
25 #include <linux/ethtool.h>
26 #include <linux/platform_device.h>
27 #include <linux/phy.h>
29 #include <ramips_eth_platform.h>
30 #include "ramips_eth.h"
32 #define TX_TIMEOUT (20 * HZ / 100)
33 #define MAX_RX_LENGTH 1600
35 #ifdef CONFIG_RALINK_RT305X
36 #include "ramips_esw.c"
38 static inline int rt305x_esw_init(void) { return 0; }
39 static inline void rt305x_esw_exit(void) { }
42 #define phys_to_bus(a) (a & 0x1FFFFFFF)
44 #ifdef CONFIG_RAMIPS_ETH_DEBUG
45 #define RADEBUG(fmt, args...) printk(KERN_DEBUG fmt, ## args)
47 #define RADEBUG(fmt, args...) do {} while (0)
50 static struct net_device * ramips_dev;
51 static void __iomem *ramips_fe_base = 0;
54 ramips_fe_wr(u32 val, unsigned reg)
56 __raw_writel(val, ramips_fe_base + reg);
60 ramips_fe_rr(unsigned reg)
62 return __raw_readl(ramips_fe_base + reg);
66 ramips_fe_int_disable(u32 mask)
68 ramips_fe_wr(ramips_fe_rr(RAMIPS_FE_INT_ENABLE) & ~mask,
69 RAMIPS_FE_INT_ENABLE);
71 ramips_fe_rr(RAMIPS_FE_INT_ENABLE);
75 ramips_fe_int_enable(u32 mask)
77 ramips_fe_wr(ramips_fe_rr(RAMIPS_FE_INT_ENABLE) | mask,
78 RAMIPS_FE_INT_ENABLE);
80 ramips_fe_rr(RAMIPS_FE_INT_ENABLE);
84 ramips_hw_set_macaddr(unsigned char *mac)
86 ramips_fe_wr((mac[0] << 8) | mac[1], RAMIPS_GDMA1_MAC_ADRH);
87 ramips_fe_wr((mac[2] << 24) | (mac[3] << 16) | (mac[4] << 8) | mac[5],
88 RAMIPS_GDMA1_MAC_ADRL);
91 #if defined(CONFIG_RALINK_RT288X) || defined(CONFIG_RALINK_RT3883)
93 #define RAMIPS_MDIO_RETRY 1000
95 static unsigned char *ramips_speed_str(struct raeth_priv *re)
109 static void ramips_link_adjust(struct raeth_priv *re)
111 struct ramips_eth_platform_data *pdata;
114 pdata = re->parent->platform_data;
116 netif_carrier_off(re->netdev);
117 netdev_info(re->netdev, "link down\n");
121 mdio_cfg = RAMIPS_MDIO_CFG_TX_CLK_SKEW_200 |
122 RAMIPS_MDIO_CFG_TX_CLK_SKEW_200 |
123 RAMIPS_MDIO_CFG_GP1_FRC_EN;
125 if (re->duplex == DUPLEX_FULL)
126 mdio_cfg |= RAMIPS_MDIO_CFG_GP1_DUPLEX;
129 mdio_cfg |= RAMIPS_MDIO_CFG_GP1_FC_TX;
132 mdio_cfg |= RAMIPS_MDIO_CFG_GP1_FC_RX;
136 mdio_cfg |= RAMIPS_MDIO_CFG_GP1_SPEED_10;
139 mdio_cfg |= RAMIPS_MDIO_CFG_GP1_SPEED_100;
142 mdio_cfg |= RAMIPS_MDIO_CFG_GP1_SPEED_1000;
148 ramips_fe_wr(mdio_cfg, RAMIPS_MDIO_CFG);
150 netif_carrier_on(re->netdev);
151 netdev_info(re->netdev, "link up (%sMbps/%s duplex)\n",
152 ramips_speed_str(re),
153 (DUPLEX_FULL == re->duplex) ? "Full" : "Half");
157 ramips_mdio_wait_ready(struct raeth_priv *re)
161 retries = RAMIPS_MDIO_RETRY;
165 t = ramips_fe_rr(RAMIPS_MDIO_ACCESS);
166 if ((t & (0x1 << 31)) == 0)
175 dev_err(re->parent, "MDIO operation timed out\n");
180 ramips_mdio_read(struct mii_bus *bus, int phy_addr, int phy_reg)
182 struct raeth_priv *re = bus->priv;
186 err = ramips_mdio_wait_ready(re);
190 t = (phy_addr << 24) | (phy_reg << 16);
191 ramips_fe_wr(t, RAMIPS_MDIO_ACCESS);
193 ramips_fe_wr(t, RAMIPS_MDIO_ACCESS);
195 err = ramips_mdio_wait_ready(re);
199 RADEBUG("%s: addr=%04x, reg=%04x, value=%04x\n", __func__,
200 phy_addr, phy_reg, ramips_fe_rr(RAMIPS_MDIO_ACCESS) & 0xffff);
202 return ramips_fe_rr(RAMIPS_MDIO_ACCESS) & 0xffff;
206 ramips_mdio_write(struct mii_bus *bus, int phy_addr, int phy_reg, u16 val)
208 struct raeth_priv *re = bus->priv;
212 RADEBUG("%s: addr=%04x, reg=%04x, value=%04x\n", __func__,
213 phy_addr, phy_reg, ramips_fe_rr(RAMIPS_MDIO_ACCESS) & 0xffff);
215 err = ramips_mdio_wait_ready(re);
219 t = (1 << 30) | (phy_addr << 24) | (phy_reg << 16) | val;
220 ramips_fe_wr(t, RAMIPS_MDIO_ACCESS);
222 ramips_fe_wr(t, RAMIPS_MDIO_ACCESS);
224 return ramips_mdio_wait_ready(re);
228 ramips_mdio_reset(struct mii_bus *bus)
235 ramips_mdio_init(struct raeth_priv *re)
240 re->mii_bus = mdiobus_alloc();
241 if (re->mii_bus == NULL)
244 re->mii_bus->name = "ramips_mdio";
245 re->mii_bus->read = ramips_mdio_read;
246 re->mii_bus->write = ramips_mdio_write;
247 re->mii_bus->reset = ramips_mdio_reset;
248 re->mii_bus->irq = re->mii_irq;
249 re->mii_bus->priv = re;
250 re->mii_bus->parent = re->parent;
252 snprintf(re->mii_bus->id, MII_BUS_ID_SIZE, "%s", "ramips_mdio");
253 re->mii_bus->phy_mask = 0;
255 for (i = 0; i < PHY_MAX_ADDR; i++)
256 re->mii_irq[i] = PHY_POLL;
258 err = mdiobus_register(re->mii_bus);
270 ramips_mdio_cleanup(struct raeth_priv *re)
272 mdiobus_unregister(re->mii_bus);
277 ramips_phy_link_adjust(struct net_device *dev)
279 struct raeth_priv *re = netdev_priv(dev);
280 struct phy_device *phydev = re->phy_dev;
282 int status_change = 0;
284 spin_lock_irqsave(&re->phy_lock, flags);
287 if (re->duplex != phydev->duplex ||
288 re->speed != phydev->speed)
291 if (phydev->link != re->link)
294 re->link = phydev->link;
295 re->duplex = phydev->duplex;
296 re->speed = phydev->speed;
299 ramips_link_adjust(re);
301 spin_unlock_irqrestore(&re->phy_lock, flags);
305 ramips_phy_connect_multi(struct raeth_priv *re)
307 struct net_device *netdev = re->netdev;
308 struct ramips_eth_platform_data *pdata;
309 struct phy_device *phydev = NULL;
313 pdata = re->parent->platform_data;
314 for (phy_addr = 0; phy_addr < PHY_MAX_ADDR; phy_addr++) {
315 if (!(pdata->phy_mask & (1 << phy_addr)))
318 if (re->mii_bus->phy_map[phy_addr] == NULL)
321 RADEBUG("%s: PHY found at %s, uid=%08x\n",
323 dev_name(&re->mii_bus->phy_map[phy_addr]->dev),
324 re->mii_bus->phy_map[phy_addr]->phy_id);
327 phydev = re->mii_bus->phy_map[phy_addr];
331 netdev_err(netdev, "no PHY found with phy_mask=%08x\n",
336 re->phy_dev = phy_connect(netdev, dev_name(&phydev->dev),
337 ramips_phy_link_adjust, 0,
340 if (IS_ERR(re->phy_dev)) {
341 netdev_err(netdev, "could not connect to PHY at %s\n",
342 dev_name(&phydev->dev));
343 return PTR_ERR(re->phy_dev);
346 phydev->supported &= PHY_GBIT_FEATURES;
347 phydev->advertising = phydev->supported;
349 RADEBUG("%s: connected to PHY at %s [uid=%08x, driver=%s]\n",
350 netdev->name, dev_name(&phydev->dev),
351 phydev->phy_id, phydev->drv->name);
363 ramips_phy_connect_fixed(struct raeth_priv *re)
365 struct ramips_eth_platform_data *pdata;
367 pdata = re->parent->platform_data;
368 switch (pdata->speed) {
374 netdev_err(re->netdev, "invalid speed specified\n");
378 RADEBUG("%s: using fixed link parameters\n", re->netdev->name);
380 re->speed = pdata->speed;
381 re->duplex = pdata->duplex;
382 re->tx_fc = pdata->tx_fc;
383 re->rx_fc = pdata->tx_fc;
389 ramips_phy_connect(struct raeth_priv *re)
391 struct ramips_eth_platform_data *pdata;
393 pdata = re->parent->platform_data;
395 return ramips_phy_connect_multi(re);
397 return ramips_phy_connect_fixed(re);
401 ramips_phy_disconnect(struct raeth_priv *re)
404 phy_disconnect(re->phy_dev);
408 ramips_phy_start(struct raeth_priv *re)
413 phy_start(re->phy_dev);
415 spin_lock_irqsave(&re->phy_lock, flags);
417 ramips_link_adjust(re);
418 spin_unlock_irqrestore(&re->phy_lock, flags);
423 ramips_phy_stop(struct raeth_priv *re)
428 phy_stop(re->phy_dev);
430 spin_lock_irqsave(&re->phy_lock, flags);
432 ramips_link_adjust(re);
433 spin_unlock_irqrestore(&re->phy_lock, flags);
437 ramips_mdio_init(struct raeth_priv *re)
443 ramips_mdio_cleanup(struct raeth_priv *re)
448 ramips_phy_connect(struct raeth_priv *re)
454 ramips_phy_disconnect(struct raeth_priv *re)
459 ramips_phy_start(struct raeth_priv *re)
464 ramips_phy_stop(struct raeth_priv *re)
467 #endif /* CONFIG_RALINK_RT288X || CONFIG_RALINK_RT3883 */
470 ramips_cleanup_dma(struct raeth_priv *re)
474 for (i = 0; i < NUM_RX_DESC; i++)
476 dma_unmap_single(&re->netdev->dev, re->rx_dma[i],
477 MAX_RX_LENGTH, DMA_FROM_DEVICE);
478 dev_kfree_skb_any(re->rx_skb[i]);
482 dma_free_coherent(&re->netdev->dev,
483 NUM_RX_DESC * sizeof(struct ramips_rx_dma),
484 re->rx, re->rx_desc_dma);
487 dma_free_coherent(&re->netdev->dev,
488 NUM_TX_DESC * sizeof(struct ramips_tx_dma),
489 re->tx, re->tx_desc_dma);
493 ramips_alloc_dma(struct raeth_priv *re)
498 re->skb_free_idx = 0;
501 re->tx = dma_alloc_coherent(&re->netdev->dev,
502 NUM_TX_DESC * sizeof(struct ramips_tx_dma),
503 &re->tx_desc_dma, GFP_ATOMIC);
507 memset(re->tx, 0, NUM_TX_DESC * sizeof(struct ramips_tx_dma));
508 for (i = 0; i < NUM_TX_DESC; i++) {
509 re->tx[i].txd2 = TX_DMA_LSO | TX_DMA_DONE;
510 re->tx[i].txd4 = TX_DMA_QN(3) | TX_DMA_PN(1);
514 re->rx = dma_alloc_coherent(&re->netdev->dev,
515 NUM_RX_DESC * sizeof(struct ramips_rx_dma),
516 &re->rx_desc_dma, GFP_ATOMIC);
520 memset(re->rx, 0, sizeof(struct ramips_rx_dma) * NUM_RX_DESC);
521 for (i = 0; i < NUM_RX_DESC; i++) {
523 struct sk_buff *new_skb;
525 new_skb = netdev_alloc_skb(re->netdev,
526 MAX_RX_LENGTH + NET_IP_ALIGN);
530 skb_reserve(new_skb, NET_IP_ALIGN);
532 dma_addr = dma_map_single(&re->netdev->dev, new_skb->data,
533 MAX_RX_LENGTH, DMA_FROM_DEVICE);
534 re->rx_dma[i] = dma_addr;
535 re->rx[i].rxd1 = (unsigned int) re->rx_dma[i];
536 re->rx[i].rxd2 |= RX_DMA_LSO;
537 re->rx_skb[i] = new_skb;
543 ramips_cleanup_dma(re);
548 ramips_setup_dma(struct raeth_priv *re)
550 ramips_fe_wr(re->tx_desc_dma, RAMIPS_TX_BASE_PTR0);
551 ramips_fe_wr(NUM_TX_DESC, RAMIPS_TX_MAX_CNT0);
552 ramips_fe_wr(0, RAMIPS_TX_CTX_IDX0);
553 ramips_fe_wr(RAMIPS_PST_DTX_IDX0, RAMIPS_PDMA_RST_CFG);
555 ramips_fe_wr(re->rx_desc_dma, RAMIPS_RX_BASE_PTR0);
556 ramips_fe_wr(NUM_RX_DESC, RAMIPS_RX_MAX_CNT0);
557 ramips_fe_wr((NUM_RX_DESC - 1), RAMIPS_RX_CALC_IDX0);
558 ramips_fe_wr(RAMIPS_PST_DRX_IDX0, RAMIPS_PDMA_RST_CFG);
562 ramips_eth_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
564 struct raeth_priv *re = netdev_priv(dev);
566 unsigned int tx_next;
567 dma_addr_t mapped_addr;
569 if (re->plat->min_pkt_len) {
570 if (skb->len < re->plat->min_pkt_len) {
571 if (skb_padto(skb, re->plat->min_pkt_len)) {
573 "ramips_eth: skb_padto failed\n");
577 skb_put(skb, re->plat->min_pkt_len - skb->len);
581 dev->trans_start = jiffies;
582 mapped_addr = dma_map_single(&re->netdev->dev, skb->data, skb->len,
585 spin_lock(&re->page_lock);
586 tx = ramips_fe_rr(RAMIPS_TX_CTX_IDX0);
587 tx_next = (tx + 1) % NUM_TX_DESC;
589 if ((re->tx_skb[tx]) || (re->tx_skb[tx_next]) ||
590 !(re->tx[tx].txd2 & TX_DMA_DONE) ||
591 !(re->tx[tx_next].txd2 & TX_DMA_DONE))
594 re->tx[tx].txd1 = (unsigned int) mapped_addr;
595 re->tx[tx].txd2 &= ~(TX_DMA_PLEN0_MASK | TX_DMA_DONE);
596 re->tx[tx].txd2 |= TX_DMA_PLEN0(skb->len);
597 dev->stats.tx_packets++;
598 dev->stats.tx_bytes += skb->len;
599 re->tx_skb[tx] = skb;
601 ramips_fe_wr(tx_next, RAMIPS_TX_CTX_IDX0);
602 spin_unlock(&re->page_lock);
606 spin_unlock(&re->page_lock);
607 dev->stats.tx_dropped++;
613 ramips_eth_rx_hw(unsigned long ptr)
615 struct net_device *dev = (struct net_device *) ptr;
616 struct raeth_priv *re = netdev_priv(dev);
621 struct sk_buff *rx_skb, *new_skb;
624 rx = (ramips_fe_rr(RAMIPS_RX_CALC_IDX0) + 1) % NUM_RX_DESC;
625 if (!(re->rx[rx].rxd2 & RX_DMA_DONE))
629 rx_skb = re->rx_skb[rx];
630 pktlen = RX_DMA_PLEN0(re->rx[rx].rxd2);
632 new_skb = netdev_alloc_skb(dev, MAX_RX_LENGTH + NET_IP_ALIGN);
633 /* Reuse the buffer on allocation failures */
637 dma_unmap_single(&re->netdev->dev, re->rx_dma[rx],
638 MAX_RX_LENGTH, DMA_FROM_DEVICE);
640 skb_put(rx_skb, pktlen);
642 rx_skb->protocol = eth_type_trans(rx_skb, dev);
643 rx_skb->ip_summed = CHECKSUM_NONE;
644 dev->stats.rx_packets++;
645 dev->stats.rx_bytes += pktlen;
648 re->rx_skb[rx] = new_skb;
649 skb_reserve(new_skb, NET_IP_ALIGN);
651 dma_addr = dma_map_single(&re->netdev->dev,
655 re->rx_dma[rx] = dma_addr;
656 re->rx[rx].rxd1 = (unsigned int) dma_addr;
658 dev->stats.rx_dropped++;
661 re->rx[rx].rxd2 &= ~RX_DMA_DONE;
663 ramips_fe_wr(rx, RAMIPS_RX_CALC_IDX0);
667 tasklet_schedule(&re->rx_tasklet);
669 ramips_fe_int_enable(RAMIPS_RX_DLY_INT);
673 ramips_eth_tx_housekeeping(unsigned long ptr)
675 struct net_device *dev = (struct net_device*)ptr;
676 struct raeth_priv *re = netdev_priv(dev);
678 spin_lock(&re->page_lock);
679 while ((re->tx[re->skb_free_idx].txd2 & TX_DMA_DONE) &&
680 (re->tx_skb[re->skb_free_idx])) {
681 dev_kfree_skb_irq(re->tx_skb[re->skb_free_idx]);
682 re->tx_skb[re->skb_free_idx] = 0;
684 if (re->skb_free_idx >= NUM_TX_DESC)
685 re->skb_free_idx = 0;
687 spin_unlock(&re->page_lock);
689 ramips_fe_int_enable(RAMIPS_TX_DLY_INT);
693 ramips_eth_timeout(struct net_device *dev)
695 struct raeth_priv *re = netdev_priv(dev);
697 tasklet_schedule(&re->tx_housekeeping_tasklet);
701 ramips_eth_irq(int irq, void *dev)
703 struct raeth_priv *re = netdev_priv(dev);
704 unsigned long fe_int = ramips_fe_rr(RAMIPS_FE_INT_STATUS);
706 ramips_fe_wr(0xFFFFFFFF, RAMIPS_FE_INT_STATUS);
708 if (fe_int & RAMIPS_RX_DLY_INT) {
709 ramips_fe_int_disable(RAMIPS_RX_DLY_INT);
710 tasklet_schedule(&re->rx_tasklet);
713 if (fe_int & RAMIPS_TX_DLY_INT) {
714 ramips_fe_int_disable(RAMIPS_TX_DLY_INT);
715 tasklet_schedule(&re->tx_housekeeping_tasklet);
722 ramips_eth_open(struct net_device *dev)
724 struct raeth_priv *re = netdev_priv(dev);
727 err = request_irq(dev->irq, ramips_eth_irq, IRQF_DISABLED,
732 err = ramips_alloc_dma(re);
736 ramips_hw_set_macaddr(dev->dev_addr);
738 ramips_setup_dma(re);
739 ramips_fe_wr((ramips_fe_rr(RAMIPS_PDMA_GLO_CFG) & 0xff) |
740 (RAMIPS_TX_WB_DDONE | RAMIPS_RX_DMA_EN |
741 RAMIPS_TX_DMA_EN | RAMIPS_PDMA_SIZE_4DWORDS),
742 RAMIPS_PDMA_GLO_CFG);
743 ramips_fe_wr((ramips_fe_rr(RAMIPS_FE_GLO_CFG) &
744 ~(RAMIPS_US_CYC_CNT_MASK << RAMIPS_US_CYC_CNT_SHIFT)) |
745 ((re->plat->sys_freq / RAMIPS_US_CYC_CNT_DIVISOR) << RAMIPS_US_CYC_CNT_SHIFT),
748 tasklet_init(&re->tx_housekeeping_tasklet, ramips_eth_tx_housekeeping,
750 tasklet_init(&re->rx_tasklet, ramips_eth_rx_hw, (unsigned long)dev);
752 ramips_phy_start(re);
754 ramips_fe_wr(RAMIPS_DELAY_INIT, RAMIPS_DLY_INT_CFG);
755 ramips_fe_wr(RAMIPS_TX_DLY_INT | RAMIPS_RX_DLY_INT, RAMIPS_FE_INT_ENABLE);
756 ramips_fe_wr(ramips_fe_rr(RAMIPS_GDMA1_FWD_CFG) &
757 ~(RAMIPS_GDM1_ICS_EN | RAMIPS_GDM1_TCS_EN | RAMIPS_GDM1_UCS_EN | 0xffff),
758 RAMIPS_GDMA1_FWD_CFG);
759 ramips_fe_wr(ramips_fe_rr(RAMIPS_CDMA_CSG_CFG) &
760 ~(RAMIPS_ICS_GEN_EN | RAMIPS_TCS_GEN_EN | RAMIPS_UCS_GEN_EN),
761 RAMIPS_CDMA_CSG_CFG);
762 ramips_fe_wr(RAMIPS_PSE_FQFC_CFG_INIT, RAMIPS_PSE_FQ_CFG);
763 ramips_fe_wr(1, RAMIPS_FE_RST_GL);
764 ramips_fe_wr(0, RAMIPS_FE_RST_GL);
766 netif_start_queue(dev);
770 free_irq(dev->irq, dev);
775 ramips_eth_stop(struct net_device *dev)
777 struct raeth_priv *re = netdev_priv(dev);
779 ramips_fe_wr(ramips_fe_rr(RAMIPS_PDMA_GLO_CFG) &
780 ~(RAMIPS_TX_WB_DDONE | RAMIPS_RX_DMA_EN | RAMIPS_TX_DMA_EN),
781 RAMIPS_PDMA_GLO_CFG);
783 /* disable all interrupts in the hw */
784 ramips_fe_wr(0, RAMIPS_FE_INT_ENABLE);
787 free_irq(dev->irq, dev);
788 netif_stop_queue(dev);
789 tasklet_kill(&re->tx_housekeeping_tasklet);
790 tasklet_kill(&re->rx_tasklet);
791 ramips_cleanup_dma(re);
792 RADEBUG("ramips_eth: stopped\n");
797 ramips_eth_probe(struct net_device *dev)
799 struct raeth_priv *re = netdev_priv(dev);
802 BUG_ON(!re->plat->reset_fe);
803 re->plat->reset_fe();
804 net_srandom(jiffies);
805 memcpy(dev->dev_addr, re->plat->mac, ETH_ALEN);
809 dev->watchdog_timeo = TX_TIMEOUT;
810 spin_lock_init(&re->page_lock);
811 spin_lock_init(&re->phy_lock);
813 err = ramips_mdio_init(re);
817 err = ramips_phy_connect(re);
819 goto err_mdio_cleanup;
824 ramips_mdio_cleanup(re);
829 ramips_eth_uninit(struct net_device *dev)
831 struct raeth_priv *re = netdev_priv(dev);
833 ramips_phy_disconnect(re);
834 ramips_mdio_cleanup(re);
837 static const struct net_device_ops ramips_eth_netdev_ops = {
838 .ndo_init = ramips_eth_probe,
839 .ndo_uninit = ramips_eth_uninit,
840 .ndo_open = ramips_eth_open,
841 .ndo_stop = ramips_eth_stop,
842 .ndo_start_xmit = ramips_eth_hard_start_xmit,
843 .ndo_tx_timeout = ramips_eth_timeout,
844 .ndo_change_mtu = eth_change_mtu,
845 .ndo_set_mac_address = eth_mac_addr,
846 .ndo_validate_addr = eth_validate_addr,
850 ramips_eth_plat_probe(struct platform_device *plat)
852 struct raeth_priv *re;
853 struct ramips_eth_platform_data *data = plat->dev.platform_data;
854 struct resource *res;
858 dev_err(&plat->dev, "no platform data specified\n");
862 res = platform_get_resource(plat, IORESOURCE_MEM, 0);
864 dev_err(&plat->dev, "no memory resource found\n");
868 ramips_fe_base = ioremap_nocache(res->start, res->end - res->start + 1);
872 ramips_dev = alloc_etherdev(sizeof(struct raeth_priv));
874 dev_err(&plat->dev, "alloc_etherdev failed\n");
879 strcpy(ramips_dev->name, "eth%d");
880 ramips_dev->irq = platform_get_irq(plat, 0);
881 if (ramips_dev->irq < 0) {
882 dev_err(&plat->dev, "no IRQ resource found\n");
886 ramips_dev->addr_len = ETH_ALEN;
887 ramips_dev->base_addr = (unsigned long)ramips_fe_base;
888 ramips_dev->netdev_ops = &ramips_eth_netdev_ops;
890 re = netdev_priv(ramips_dev);
892 re->netdev = ramips_dev;
893 re->parent = &plat->dev;
894 re->speed = data->speed;
895 re->duplex = data->duplex;
896 re->rx_fc = data->rx_fc;
897 re->tx_fc = data->tx_fc;
900 err = register_netdev(ramips_dev);
902 dev_err(&plat->dev, "error bringing up device\n");
906 RADEBUG("ramips_eth: loaded\n");
912 iounmap(ramips_fe_base);
917 ramips_eth_plat_remove(struct platform_device *plat)
919 unregister_netdev(ramips_dev);
920 free_netdev(ramips_dev);
921 RADEBUG("ramips_eth: unloaded\n");
925 static struct platform_driver ramips_eth_driver = {
926 .probe = ramips_eth_plat_probe,
927 .remove = ramips_eth_plat_remove,
929 .name = "ramips_eth",
930 .owner = THIS_MODULE,
935 ramips_eth_init(void)
939 ret = rt305x_esw_init();
943 ret = platform_driver_register(&ramips_eth_driver);
946 "ramips_eth: Error registering platfom driver!\n");
958 ramips_eth_cleanup(void)
960 platform_driver_unregister(&ramips_eth_driver);
964 module_init(ramips_eth_init);
965 module_exit(ramips_eth_cleanup);
967 MODULE_LICENSE("GPL");
968 MODULE_AUTHOR("John Crispin <blogic@openwrt.org>");
969 MODULE_DESCRIPTION("ethernet driver for ramips boards");