2 * Combined Ethernet driver for Motorola MPC8xx and MPC82xx.
4 * Copyright (c) 2003 Intracom S.A.
5 * by Pantelis Antoniou <panto@intracom.gr>
7 * 2005 (c) MontaVista Software, Inc.
8 * Vitaly Bordug <vbordug@ru.mvista.com>
10 * Heavily based on original FEC driver by Dan Malek <dan@embeddededge.com>
11 * and modifications by Joakim Tjernlund <joakim.tjernlund@lumentis.se>
13 * This file is licensed under the terms of the GNU General Public License
14 * version 2. This program is licensed "as is" without any warranty of any
15 * kind, whether express or implied.
18 #include <linux/module.h>
19 #include <linux/kernel.h>
20 #include <linux/types.h>
21 #include <linux/string.h>
22 #include <linux/ptrace.h>
23 #include <linux/errno.h>
24 #include <linux/ioport.h>
25 #include <linux/slab.h>
26 #include <linux/interrupt.h>
27 #include <linux/init.h>
28 #include <linux/delay.h>
29 #include <linux/netdevice.h>
30 #include <linux/etherdevice.h>
31 #include <linux/skbuff.h>
32 #include <linux/spinlock.h>
33 #include <linux/mii.h>
34 #include <linux/ethtool.h>
35 #include <linux/bitops.h>
37 #include <linux/platform_device.h>
38 #include <linux/phy.h>
40 #include <linux/of_mdio.h>
41 #include <linux/of_platform.h>
42 #include <linux/of_gpio.h>
43 #include <linux/of_net.h>
45 #include <linux/vmalloc.h>
46 #include <asm/pgtable.h>
48 #include <asm/uaccess.h>
52 /*************************************************/
54 MODULE_AUTHOR("Pantelis Antoniou <panto@intracom.gr>");
55 MODULE_DESCRIPTION("Freescale Ethernet Driver");
56 MODULE_LICENSE("GPL");
57 MODULE_VERSION(DRV_MODULE_VERSION);
59 static int fs_enet_debug = -1; /* -1 == use FS_ENET_DEF_MSG_ENABLE as value */
60 module_param(fs_enet_debug, int, 0);
61 MODULE_PARM_DESC(fs_enet_debug,
62 "Freescale bitmapped debugging message enable value");
64 #ifdef CONFIG_NET_POLL_CONTROLLER
65 static void fs_enet_netpoll(struct net_device *dev);
68 static void fs_set_multicast_list(struct net_device *dev)
70 struct fs_enet_private *fep = netdev_priv(dev);
72 (*fep->ops->set_multicast_list)(dev);
75 static void skb_align(struct sk_buff *skb, int align)
77 int off = ((unsigned long)skb->data) & (align - 1);
80 skb_reserve(skb, align - off);
83 /* NAPI receive function */
84 static int fs_enet_rx_napi(struct napi_struct *napi, int budget)
86 struct fs_enet_private *fep = container_of(napi, struct fs_enet_private, napi);
87 struct net_device *dev = fep->ndev;
88 const struct fs_platform_info *fpi = fep->fpi;
90 struct sk_buff *skb, *skbn, *skbt;
96 * First, grab all of the stats for the incoming packet.
97 * These get messed up if we get called due to a busy condition.
101 /* clear RX status bits for napi*/
102 (*fep->ops->napi_clear_rx_event)(dev);
104 while (((sc = CBDR_SC(bdp)) & BD_ENET_RX_EMPTY) == 0) {
105 curidx = bdp - fep->rx_bd_base;
108 * Since we have allocated space to hold a complete frame,
109 * the last indicator should be set.
111 if ((sc & BD_ENET_RX_LAST) == 0)
112 dev_warn(fep->dev, "rcv is not +last\n");
117 if (sc & (BD_ENET_RX_LG | BD_ENET_RX_SH | BD_ENET_RX_CL |
118 BD_ENET_RX_NO | BD_ENET_RX_CR | BD_ENET_RX_OV)) {
119 fep->stats.rx_errors++;
120 /* Frame too long or too short. */
121 if (sc & (BD_ENET_RX_LG | BD_ENET_RX_SH))
122 fep->stats.rx_length_errors++;
123 /* Frame alignment */
124 if (sc & (BD_ENET_RX_NO | BD_ENET_RX_CL))
125 fep->stats.rx_frame_errors++;
127 if (sc & BD_ENET_RX_CR)
128 fep->stats.rx_crc_errors++;
130 if (sc & BD_ENET_RX_OV)
131 fep->stats.rx_crc_errors++;
133 skb = fep->rx_skbuff[curidx];
135 dma_unmap_single(fep->dev, CBDR_BUFADDR(bdp),
136 L1_CACHE_ALIGN(PKT_MAXBUF_SIZE),
142 skb = fep->rx_skbuff[curidx];
144 dma_unmap_single(fep->dev, CBDR_BUFADDR(bdp),
145 L1_CACHE_ALIGN(PKT_MAXBUF_SIZE),
149 * Process the incoming frame.
151 fep->stats.rx_packets++;
152 pkt_len = CBDR_DATLEN(bdp) - 4; /* remove CRC */
153 fep->stats.rx_bytes += pkt_len + 4;
155 if (pkt_len <= fpi->rx_copybreak) {
156 /* +2 to make IP header L1 cache aligned */
157 skbn = netdev_alloc_skb(dev, pkt_len + 2);
159 skb_reserve(skbn, 2); /* align IP header */
160 skb_copy_from_linear_data(skb,
161 skbn->data, pkt_len);
168 skbn = netdev_alloc_skb(dev, ENET_RX_FRSIZE);
171 skb_align(skbn, ENET_RX_ALIGN);
175 skb_put(skb, pkt_len); /* Make room */
176 skb->protocol = eth_type_trans(skb, dev);
178 netif_receive_skb(skb);
180 fep->stats.rx_dropped++;
185 fep->rx_skbuff[curidx] = skbn;
186 CBDW_BUFADDR(bdp, dma_map_single(fep->dev, skbn->data,
187 L1_CACHE_ALIGN(PKT_MAXBUF_SIZE),
190 CBDW_SC(bdp, (sc & ~BD_ENET_RX_STATS) | BD_ENET_RX_EMPTY);
193 * Update BD pointer to next entry.
195 if ((sc & BD_ENET_RX_WRAP) == 0)
198 bdp = fep->rx_bd_base;
200 (*fep->ops->rx_bd_done)(dev);
202 if (received >= budget)
208 if (received < budget) {
211 (*fep->ops->napi_enable_rx)(dev);
216 /* non NAPI receive function */
217 static int fs_enet_rx_non_napi(struct net_device *dev)
219 struct fs_enet_private *fep = netdev_priv(dev);
220 const struct fs_platform_info *fpi = fep->fpi;
222 struct sk_buff *skb, *skbn, *skbt;
227 * First, grab all of the stats for the incoming packet.
228 * These get messed up if we get called due to a busy condition.
232 while (((sc = CBDR_SC(bdp)) & BD_ENET_RX_EMPTY) == 0) {
234 curidx = bdp - fep->rx_bd_base;
237 * Since we have allocated space to hold a complete frame,
238 * the last indicator should be set.
240 if ((sc & BD_ENET_RX_LAST) == 0)
241 dev_warn(fep->dev, "rcv is not +last\n");
246 if (sc & (BD_ENET_RX_LG | BD_ENET_RX_SH | BD_ENET_RX_CL |
247 BD_ENET_RX_NO | BD_ENET_RX_CR | BD_ENET_RX_OV)) {
248 fep->stats.rx_errors++;
249 /* Frame too long or too short. */
250 if (sc & (BD_ENET_RX_LG | BD_ENET_RX_SH))
251 fep->stats.rx_length_errors++;
252 /* Frame alignment */
253 if (sc & (BD_ENET_RX_NO | BD_ENET_RX_CL))
254 fep->stats.rx_frame_errors++;
256 if (sc & BD_ENET_RX_CR)
257 fep->stats.rx_crc_errors++;
259 if (sc & BD_ENET_RX_OV)
260 fep->stats.rx_crc_errors++;
262 skb = fep->rx_skbuff[curidx];
264 dma_unmap_single(fep->dev, CBDR_BUFADDR(bdp),
265 L1_CACHE_ALIGN(PKT_MAXBUF_SIZE),
272 skb = fep->rx_skbuff[curidx];
274 dma_unmap_single(fep->dev, CBDR_BUFADDR(bdp),
275 L1_CACHE_ALIGN(PKT_MAXBUF_SIZE),
279 * Process the incoming frame.
281 fep->stats.rx_packets++;
282 pkt_len = CBDR_DATLEN(bdp) - 4; /* remove CRC */
283 fep->stats.rx_bytes += pkt_len + 4;
285 if (pkt_len <= fpi->rx_copybreak) {
286 /* +2 to make IP header L1 cache aligned */
287 skbn = netdev_alloc_skb(dev, pkt_len + 2);
289 skb_reserve(skbn, 2); /* align IP header */
290 skb_copy_from_linear_data(skb,
291 skbn->data, pkt_len);
298 skbn = netdev_alloc_skb(dev, ENET_RX_FRSIZE);
301 skb_align(skbn, ENET_RX_ALIGN);
305 skb_put(skb, pkt_len); /* Make room */
306 skb->protocol = eth_type_trans(skb, dev);
310 fep->stats.rx_dropped++;
315 fep->rx_skbuff[curidx] = skbn;
316 CBDW_BUFADDR(bdp, dma_map_single(fep->dev, skbn->data,
317 L1_CACHE_ALIGN(PKT_MAXBUF_SIZE),
320 CBDW_SC(bdp, (sc & ~BD_ENET_RX_STATS) | BD_ENET_RX_EMPTY);
323 * Update BD pointer to next entry.
325 if ((sc & BD_ENET_RX_WRAP) == 0)
328 bdp = fep->rx_bd_base;
330 (*fep->ops->rx_bd_done)(dev);
338 static void fs_enet_tx(struct net_device *dev)
340 struct fs_enet_private *fep = netdev_priv(dev);
343 int dirtyidx, do_wake, do_restart;
346 spin_lock(&fep->tx_lock);
349 do_wake = do_restart = 0;
350 while (((sc = CBDR_SC(bdp)) & BD_ENET_TX_READY) == 0) {
351 dirtyidx = bdp - fep->tx_bd_base;
353 if (fep->tx_free == fep->tx_ring)
356 skb = fep->tx_skbuff[dirtyidx];
361 if (sc & (BD_ENET_TX_HB | BD_ENET_TX_LC |
362 BD_ENET_TX_RL | BD_ENET_TX_UN | BD_ENET_TX_CSL)) {
364 if (sc & BD_ENET_TX_HB) /* No heartbeat */
365 fep->stats.tx_heartbeat_errors++;
366 if (sc & BD_ENET_TX_LC) /* Late collision */
367 fep->stats.tx_window_errors++;
368 if (sc & BD_ENET_TX_RL) /* Retrans limit */
369 fep->stats.tx_aborted_errors++;
370 if (sc & BD_ENET_TX_UN) /* Underrun */
371 fep->stats.tx_fifo_errors++;
372 if (sc & BD_ENET_TX_CSL) /* Carrier lost */
373 fep->stats.tx_carrier_errors++;
375 if (sc & (BD_ENET_TX_LC | BD_ENET_TX_RL | BD_ENET_TX_UN)) {
376 fep->stats.tx_errors++;
380 fep->stats.tx_packets++;
382 if (sc & BD_ENET_TX_READY) {
384 "HEY! Enet xmit interrupt and TX_READY.\n");
388 * Deferred means some collisions occurred during transmit,
389 * but we eventually sent the packet OK.
391 if (sc & BD_ENET_TX_DEF)
392 fep->stats.collisions++;
395 dma_unmap_single(fep->dev, CBDR_BUFADDR(bdp),
396 skb->len, DMA_TO_DEVICE);
399 * Free the sk buffer associated with this last transmit.
401 dev_kfree_skb_irq(skb);
402 fep->tx_skbuff[dirtyidx] = NULL;
405 * Update pointer to next buffer descriptor to be transmitted.
407 if ((sc & BD_ENET_TX_WRAP) == 0)
410 bdp = fep->tx_bd_base;
413 * Since we have freed up a buffer, the ring is no longer
423 (*fep->ops->tx_restart)(dev);
425 spin_unlock(&fep->tx_lock);
428 netif_wake_queue(dev);
432 * The interrupt handler.
433 * This is called from the MPC core interrupt.
436 fs_enet_interrupt(int irq, void *dev_id)
438 struct net_device *dev = dev_id;
439 struct fs_enet_private *fep;
440 const struct fs_platform_info *fpi;
446 fep = netdev_priv(dev);
450 while ((int_events = (*fep->ops->get_int_events)(dev)) != 0) {
453 int_clr_events = int_events;
455 int_clr_events &= ~fep->ev_napi_rx;
457 (*fep->ops->clear_int_events)(dev, int_clr_events);
459 if (int_events & fep->ev_err)
460 (*fep->ops->ev_error)(dev, int_events);
462 if (int_events & fep->ev_rx) {
464 fs_enet_rx_non_napi(dev);
466 napi_ok = napi_schedule_prep(&fep->napi);
468 (*fep->ops->napi_disable_rx)(dev);
469 (*fep->ops->clear_int_events)(dev, fep->ev_napi_rx);
471 /* NOTE: it is possible for FCCs in NAPI mode */
472 /* to submit a spurious interrupt while in poll */
474 __napi_schedule(&fep->napi);
478 if (int_events & fep->ev_tx)
483 return IRQ_RETVAL(handled);
486 void fs_init_bds(struct net_device *dev)
488 struct fs_enet_private *fep = netdev_priv(dev);
495 fep->dirty_tx = fep->cur_tx = fep->tx_bd_base;
496 fep->tx_free = fep->tx_ring;
497 fep->cur_rx = fep->rx_bd_base;
500 * Initialize the receive buffer descriptors.
502 for (i = 0, bdp = fep->rx_bd_base; i < fep->rx_ring; i++, bdp++) {
503 skb = netdev_alloc_skb(dev, ENET_RX_FRSIZE);
507 skb_align(skb, ENET_RX_ALIGN);
508 fep->rx_skbuff[i] = skb;
510 dma_map_single(fep->dev, skb->data,
511 L1_CACHE_ALIGN(PKT_MAXBUF_SIZE),
513 CBDW_DATLEN(bdp, 0); /* zero */
514 CBDW_SC(bdp, BD_ENET_RX_EMPTY |
515 ((i < fep->rx_ring - 1) ? 0 : BD_SC_WRAP));
518 * if we failed, fillup remainder
520 for (; i < fep->rx_ring; i++, bdp++) {
521 fep->rx_skbuff[i] = NULL;
522 CBDW_SC(bdp, (i < fep->rx_ring - 1) ? 0 : BD_SC_WRAP);
526 * ...and the same for transmit.
528 for (i = 0, bdp = fep->tx_bd_base; i < fep->tx_ring; i++, bdp++) {
529 fep->tx_skbuff[i] = NULL;
530 CBDW_BUFADDR(bdp, 0);
532 CBDW_SC(bdp, (i < fep->tx_ring - 1) ? 0 : BD_SC_WRAP);
536 void fs_cleanup_bds(struct net_device *dev)
538 struct fs_enet_private *fep = netdev_priv(dev);
544 * Reset SKB transmit buffers.
546 for (i = 0, bdp = fep->tx_bd_base; i < fep->tx_ring; i++, bdp++) {
547 if ((skb = fep->tx_skbuff[i]) == NULL)
551 dma_unmap_single(fep->dev, CBDR_BUFADDR(bdp),
552 skb->len, DMA_TO_DEVICE);
554 fep->tx_skbuff[i] = NULL;
559 * Reset SKB receive buffers
561 for (i = 0, bdp = fep->rx_bd_base; i < fep->rx_ring; i++, bdp++) {
562 if ((skb = fep->rx_skbuff[i]) == NULL)
566 dma_unmap_single(fep->dev, CBDR_BUFADDR(bdp),
567 L1_CACHE_ALIGN(PKT_MAXBUF_SIZE),
570 fep->rx_skbuff[i] = NULL;
576 /**********************************************************************************/
578 #ifdef CONFIG_FS_ENET_MPC5121_FEC
580 * MPC5121 FEC requeries 4-byte alignment for TX data buffer!
582 static struct sk_buff *tx_skb_align_workaround(struct net_device *dev,
585 struct sk_buff *new_skb;
588 new_skb = netdev_alloc_skb(dev, skb->len + 4);
592 /* Make sure new skb is properly aligned */
593 skb_align(new_skb, 4);
595 /* Copy data to new skb ... */
596 skb_copy_from_linear_data(skb, new_skb->data, skb->len);
597 skb_put(new_skb, skb->len);
599 /* ... and free an old one */
600 dev_kfree_skb_any(skb);
606 static int fs_enet_start_xmit(struct sk_buff *skb, struct net_device *dev)
608 struct fs_enet_private *fep = netdev_priv(dev);
614 #ifdef CONFIG_FS_ENET_MPC5121_FEC
615 if (((unsigned long)skb->data) & 0x3) {
616 skb = tx_skb_align_workaround(dev, skb);
619 * We have lost packet due to memory allocation error
620 * in tx_skb_align_workaround(). Hopefully original
621 * skb is still valid, so try transmit it later.
623 return NETDEV_TX_BUSY;
627 spin_lock_irqsave(&fep->tx_lock, flags);
630 * Fill in a Tx ring entry
634 if (!fep->tx_free || (CBDR_SC(bdp) & BD_ENET_TX_READY)) {
635 netif_stop_queue(dev);
636 spin_unlock_irqrestore(&fep->tx_lock, flags);
639 * Ooops. All transmit buffers are full. Bail out.
640 * This should not happen, since the tx queue should be stopped.
642 dev_warn(fep->dev, "tx queue full!.\n");
643 return NETDEV_TX_BUSY;
646 curidx = bdp - fep->tx_bd_base;
648 * Clear all of the status flags.
650 CBDC_SC(bdp, BD_ENET_TX_STATS);
655 fep->tx_skbuff[curidx] = skb;
657 fep->stats.tx_bytes += skb->len;
660 * Push the data cache so the CPM does not get stale memory data.
662 CBDW_BUFADDR(bdp, dma_map_single(fep->dev,
663 skb->data, skb->len, DMA_TO_DEVICE));
664 CBDW_DATLEN(bdp, skb->len);
667 * If this was the last BD in the ring, start at the beginning again.
669 if ((CBDR_SC(bdp) & BD_ENET_TX_WRAP) == 0)
672 fep->cur_tx = fep->tx_bd_base;
675 netif_stop_queue(dev);
677 /* Trigger transmission start */
678 sc = BD_ENET_TX_READY | BD_ENET_TX_INTR |
679 BD_ENET_TX_LAST | BD_ENET_TX_TC;
681 /* note that while FEC does not have this bit
682 * it marks it as available for software use
683 * yay for hw reuse :) */
685 sc |= BD_ENET_TX_PAD;
688 skb_tx_timestamp(skb);
690 (*fep->ops->tx_kickstart)(dev);
692 spin_unlock_irqrestore(&fep->tx_lock, flags);
697 static void fs_timeout(struct net_device *dev)
699 struct fs_enet_private *fep = netdev_priv(dev);
703 fep->stats.tx_errors++;
705 spin_lock_irqsave(&fep->lock, flags);
707 if (dev->flags & IFF_UP) {
708 phy_stop(fep->phydev);
709 (*fep->ops->stop)(dev);
710 (*fep->ops->restart)(dev);
711 phy_start(fep->phydev);
714 phy_start(fep->phydev);
715 wake = fep->tx_free && !(CBDR_SC(fep->cur_tx) & BD_ENET_TX_READY);
716 spin_unlock_irqrestore(&fep->lock, flags);
719 netif_wake_queue(dev);
722 /*-----------------------------------------------------------------------------
723 * generic link-change handler - should be sufficient for most cases
724 *-----------------------------------------------------------------------------*/
725 static void generic_adjust_link(struct net_device *dev)
727 struct fs_enet_private *fep = netdev_priv(dev);
728 struct phy_device *phydev = fep->phydev;
732 /* adjust to duplex mode */
733 if (phydev->duplex != fep->oldduplex) {
735 fep->oldduplex = phydev->duplex;
738 if (phydev->speed != fep->oldspeed) {
740 fep->oldspeed = phydev->speed;
749 fep->ops->restart(dev);
750 } else if (fep->oldlink) {
757 if (new_state && netif_msg_link(fep))
758 phy_print_status(phydev);
762 static void fs_adjust_link(struct net_device *dev)
764 struct fs_enet_private *fep = netdev_priv(dev);
767 spin_lock_irqsave(&fep->lock, flags);
769 if(fep->ops->adjust_link)
770 fep->ops->adjust_link(dev);
772 generic_adjust_link(dev);
774 spin_unlock_irqrestore(&fep->lock, flags);
777 static int fs_init_phy(struct net_device *dev)
779 struct fs_enet_private *fep = netdev_priv(dev);
780 struct phy_device *phydev;
781 phy_interface_t iface;
787 iface = fep->fpi->use_rmii ?
788 PHY_INTERFACE_MODE_RMII : PHY_INTERFACE_MODE_MII;
790 phydev = of_phy_connect(dev, fep->fpi->phy_node, &fs_adjust_link, 0,
793 phydev = of_phy_connect_fixed_link(dev, &fs_adjust_link,
797 dev_err(&dev->dev, "Could not attach to PHY\n");
801 fep->phydev = phydev;
806 static int fs_enet_open(struct net_device *dev)
808 struct fs_enet_private *fep = netdev_priv(dev);
812 /* to initialize the fep->cur_rx,... */
813 /* not doing this, will cause a crash in fs_enet_rx_napi */
814 fs_init_bds(fep->ndev);
816 if (fep->fpi->use_napi)
817 napi_enable(&fep->napi);
819 /* Install our interrupt handler. */
820 r = request_irq(fep->interrupt, fs_enet_interrupt, IRQF_SHARED,
823 dev_err(fep->dev, "Could not allocate FS_ENET IRQ!");
824 if (fep->fpi->use_napi)
825 napi_disable(&fep->napi);
829 err = fs_init_phy(dev);
831 free_irq(fep->interrupt, dev);
832 if (fep->fpi->use_napi)
833 napi_disable(&fep->napi);
836 phy_start(fep->phydev);
838 netif_start_queue(dev);
843 static int fs_enet_close(struct net_device *dev)
845 struct fs_enet_private *fep = netdev_priv(dev);
848 netif_stop_queue(dev);
849 netif_carrier_off(dev);
850 if (fep->fpi->use_napi)
851 napi_disable(&fep->napi);
852 phy_stop(fep->phydev);
854 spin_lock_irqsave(&fep->lock, flags);
855 spin_lock(&fep->tx_lock);
856 (*fep->ops->stop)(dev);
857 spin_unlock(&fep->tx_lock);
858 spin_unlock_irqrestore(&fep->lock, flags);
860 /* release any irqs */
861 phy_disconnect(fep->phydev);
863 free_irq(fep->interrupt, dev);
868 static struct net_device_stats *fs_enet_get_stats(struct net_device *dev)
870 struct fs_enet_private *fep = netdev_priv(dev);
874 /*************************************************************************/
876 static void fs_get_drvinfo(struct net_device *dev,
877 struct ethtool_drvinfo *info)
879 strlcpy(info->driver, DRV_MODULE_NAME, sizeof(info->driver));
880 strlcpy(info->version, DRV_MODULE_VERSION, sizeof(info->version));
883 static int fs_get_regs_len(struct net_device *dev)
885 struct fs_enet_private *fep = netdev_priv(dev);
887 return (*fep->ops->get_regs_len)(dev);
890 static void fs_get_regs(struct net_device *dev, struct ethtool_regs *regs,
893 struct fs_enet_private *fep = netdev_priv(dev);
899 spin_lock_irqsave(&fep->lock, flags);
900 r = (*fep->ops->get_regs)(dev, p, &len);
901 spin_unlock_irqrestore(&fep->lock, flags);
907 static int fs_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
909 struct fs_enet_private *fep = netdev_priv(dev);
914 return phy_ethtool_gset(fep->phydev, cmd);
917 static int fs_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
919 struct fs_enet_private *fep = netdev_priv(dev);
924 return phy_ethtool_sset(fep->phydev, cmd);
927 static int fs_nway_reset(struct net_device *dev)
932 static u32 fs_get_msglevel(struct net_device *dev)
934 struct fs_enet_private *fep = netdev_priv(dev);
935 return fep->msg_enable;
938 static void fs_set_msglevel(struct net_device *dev, u32 value)
940 struct fs_enet_private *fep = netdev_priv(dev);
941 fep->msg_enable = value;
944 static const struct ethtool_ops fs_ethtool_ops = {
945 .get_drvinfo = fs_get_drvinfo,
946 .get_regs_len = fs_get_regs_len,
947 .get_settings = fs_get_settings,
948 .set_settings = fs_set_settings,
949 .nway_reset = fs_nway_reset,
950 .get_link = ethtool_op_get_link,
951 .get_msglevel = fs_get_msglevel,
952 .set_msglevel = fs_set_msglevel,
953 .get_regs = fs_get_regs,
954 .get_ts_info = ethtool_op_get_ts_info,
957 static int fs_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
959 struct fs_enet_private *fep = netdev_priv(dev);
961 if (!netif_running(dev))
964 return phy_mii_ioctl(fep->phydev, rq, cmd);
967 extern int fs_mii_connect(struct net_device *dev);
968 extern void fs_mii_disconnect(struct net_device *dev);
970 /**************************************************************************************/
972 #ifdef CONFIG_FS_ENET_HAS_FEC
973 #define IS_FEC(match) ((match)->data == &fs_fec_ops)
975 #define IS_FEC(match) 0
978 static const struct net_device_ops fs_enet_netdev_ops = {
979 .ndo_open = fs_enet_open,
980 .ndo_stop = fs_enet_close,
981 .ndo_get_stats = fs_enet_get_stats,
982 .ndo_start_xmit = fs_enet_start_xmit,
983 .ndo_tx_timeout = fs_timeout,
984 .ndo_set_rx_mode = fs_set_multicast_list,
985 .ndo_do_ioctl = fs_ioctl,
986 .ndo_validate_addr = eth_validate_addr,
987 .ndo_set_mac_address = eth_mac_addr,
988 .ndo_change_mtu = eth_change_mtu,
989 #ifdef CONFIG_NET_POLL_CONTROLLER
990 .ndo_poll_controller = fs_enet_netpoll,
994 static struct of_device_id fs_enet_match[];
995 static int fs_enet_probe(struct platform_device *ofdev)
997 const struct of_device_id *match;
998 struct net_device *ndev;
999 struct fs_enet_private *fep;
1000 struct fs_platform_info *fpi;
1005 const char *phy_connection_type;
1006 int privsize, len, ret = -ENODEV;
1008 match = of_match_device(fs_enet_match, &ofdev->dev);
1012 fpi = kzalloc(sizeof(*fpi), GFP_KERNEL);
1016 if (!IS_FEC(match)) {
1017 data = of_get_property(ofdev->dev.of_node, "fsl,cpm-command", &len);
1018 if (!data || len != 4)
1021 fpi->cp_command = *data;
1026 fpi->rx_copybreak = 240;
1028 fpi->napi_weight = 17;
1029 fpi->phy_node = of_parse_phandle(ofdev->dev.of_node, "phy-handle", 0);
1030 if ((!fpi->phy_node) && (!of_get_property(ofdev->dev.of_node, "fixed-link",
1034 if (of_device_is_compatible(ofdev->dev.of_node, "fsl,mpc5125-fec")) {
1035 phy_connection_type = of_get_property(ofdev->dev.of_node,
1036 "phy-connection-type", NULL);
1037 if (phy_connection_type && !strcmp("rmii", phy_connection_type))
1041 /* make clock lookup non-fatal (the driver is shared among platforms),
1042 * but require enable to succeed when a clock was specified/found,
1043 * keep a reference to the clock upon successful acquisition
1045 clk = devm_clk_get(&ofdev->dev, "per");
1047 err = clk_prepare_enable(clk);
1055 privsize = sizeof(*fep) +
1056 sizeof(struct sk_buff **) *
1057 (fpi->rx_ring + fpi->tx_ring);
1059 ndev = alloc_etherdev(privsize);
1065 SET_NETDEV_DEV(ndev, &ofdev->dev);
1066 platform_set_drvdata(ofdev, ndev);
1068 fep = netdev_priv(ndev);
1069 fep->dev = &ofdev->dev;
1072 fep->ops = match->data;
1074 ret = fep->ops->setup_data(ndev);
1078 fep->rx_skbuff = (struct sk_buff **)&fep[1];
1079 fep->tx_skbuff = fep->rx_skbuff + fpi->rx_ring;
1081 spin_lock_init(&fep->lock);
1082 spin_lock_init(&fep->tx_lock);
1084 mac_addr = of_get_mac_address(ofdev->dev.of_node);
1086 memcpy(ndev->dev_addr, mac_addr, ETH_ALEN);
1088 ret = fep->ops->allocate_bd(ndev);
1090 goto out_cleanup_data;
1092 fep->rx_bd_base = fep->ring_base;
1093 fep->tx_bd_base = fep->rx_bd_base + fpi->rx_ring;
1095 fep->tx_ring = fpi->tx_ring;
1096 fep->rx_ring = fpi->rx_ring;
1098 ndev->netdev_ops = &fs_enet_netdev_ops;
1099 ndev->watchdog_timeo = 2 * HZ;
1101 netif_napi_add(ndev, &fep->napi, fs_enet_rx_napi,
1104 ndev->ethtool_ops = &fs_ethtool_ops;
1106 init_timer(&fep->phy_timer_list);
1108 netif_carrier_off(ndev);
1110 ret = register_netdev(ndev);
1114 pr_info("%s: fs_enet: %pM\n", ndev->name, ndev->dev_addr);
1119 fep->ops->free_bd(ndev);
1121 fep->ops->cleanup_data(ndev);
1125 of_node_put(fpi->phy_node);
1127 clk_disable_unprepare(fpi->clk_per);
1133 static int fs_enet_remove(struct platform_device *ofdev)
1135 struct net_device *ndev = platform_get_drvdata(ofdev);
1136 struct fs_enet_private *fep = netdev_priv(ndev);
1138 unregister_netdev(ndev);
1140 fep->ops->free_bd(ndev);
1141 fep->ops->cleanup_data(ndev);
1142 dev_set_drvdata(fep->dev, NULL);
1143 of_node_put(fep->fpi->phy_node);
1144 if (fep->fpi->clk_per)
1145 clk_disable_unprepare(fep->fpi->clk_per);
1150 static struct of_device_id fs_enet_match[] = {
1151 #ifdef CONFIG_FS_ENET_HAS_SCC
1153 .compatible = "fsl,cpm1-scc-enet",
1154 .data = (void *)&fs_scc_ops,
1157 .compatible = "fsl,cpm2-scc-enet",
1158 .data = (void *)&fs_scc_ops,
1161 #ifdef CONFIG_FS_ENET_HAS_FCC
1163 .compatible = "fsl,cpm2-fcc-enet",
1164 .data = (void *)&fs_fcc_ops,
1167 #ifdef CONFIG_FS_ENET_HAS_FEC
1168 #ifdef CONFIG_FS_ENET_MPC5121_FEC
1170 .compatible = "fsl,mpc5121-fec",
1171 .data = (void *)&fs_fec_ops,
1174 .compatible = "fsl,mpc5125-fec",
1175 .data = (void *)&fs_fec_ops,
1179 .compatible = "fsl,pq1-fec-enet",
1180 .data = (void *)&fs_fec_ops,
1186 MODULE_DEVICE_TABLE(of, fs_enet_match);
1188 static struct platform_driver fs_enet_driver = {
1190 .owner = THIS_MODULE,
1192 .of_match_table = fs_enet_match,
1194 .probe = fs_enet_probe,
1195 .remove = fs_enet_remove,
1198 #ifdef CONFIG_NET_POLL_CONTROLLER
1199 static void fs_enet_netpoll(struct net_device *dev)
1201 disable_irq(dev->irq);
1202 fs_enet_interrupt(dev->irq, dev);
1203 enable_irq(dev->irq);
1207 module_platform_driver(fs_enet_driver);