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);
181 "Memory squeeze, dropping packet.\n");
182 fep->stats.rx_dropped++;
187 fep->rx_skbuff[curidx] = skbn;
188 CBDW_BUFADDR(bdp, dma_map_single(fep->dev, skbn->data,
189 L1_CACHE_ALIGN(PKT_MAXBUF_SIZE),
192 CBDW_SC(bdp, (sc & ~BD_ENET_RX_STATS) | BD_ENET_RX_EMPTY);
195 * Update BD pointer to next entry.
197 if ((sc & BD_ENET_RX_WRAP) == 0)
200 bdp = fep->rx_bd_base;
202 (*fep->ops->rx_bd_done)(dev);
204 if (received >= budget)
210 if (received < budget) {
213 (*fep->ops->napi_enable_rx)(dev);
218 /* non NAPI receive function */
219 static int fs_enet_rx_non_napi(struct net_device *dev)
221 struct fs_enet_private *fep = netdev_priv(dev);
222 const struct fs_platform_info *fpi = fep->fpi;
224 struct sk_buff *skb, *skbn, *skbt;
229 * First, grab all of the stats for the incoming packet.
230 * These get messed up if we get called due to a busy condition.
234 while (((sc = CBDR_SC(bdp)) & BD_ENET_RX_EMPTY) == 0) {
236 curidx = bdp - fep->rx_bd_base;
239 * Since we have allocated space to hold a complete frame,
240 * the last indicator should be set.
242 if ((sc & BD_ENET_RX_LAST) == 0)
243 dev_warn(fep->dev, "rcv is not +last\n");
248 if (sc & (BD_ENET_RX_LG | BD_ENET_RX_SH | BD_ENET_RX_CL |
249 BD_ENET_RX_NO | BD_ENET_RX_CR | BD_ENET_RX_OV)) {
250 fep->stats.rx_errors++;
251 /* Frame too long or too short. */
252 if (sc & (BD_ENET_RX_LG | BD_ENET_RX_SH))
253 fep->stats.rx_length_errors++;
254 /* Frame alignment */
255 if (sc & (BD_ENET_RX_NO | BD_ENET_RX_CL))
256 fep->stats.rx_frame_errors++;
258 if (sc & BD_ENET_RX_CR)
259 fep->stats.rx_crc_errors++;
261 if (sc & BD_ENET_RX_OV)
262 fep->stats.rx_crc_errors++;
264 skb = fep->rx_skbuff[curidx];
266 dma_unmap_single(fep->dev, CBDR_BUFADDR(bdp),
267 L1_CACHE_ALIGN(PKT_MAXBUF_SIZE),
274 skb = fep->rx_skbuff[curidx];
276 dma_unmap_single(fep->dev, CBDR_BUFADDR(bdp),
277 L1_CACHE_ALIGN(PKT_MAXBUF_SIZE),
281 * Process the incoming frame.
283 fep->stats.rx_packets++;
284 pkt_len = CBDR_DATLEN(bdp) - 4; /* remove CRC */
285 fep->stats.rx_bytes += pkt_len + 4;
287 if (pkt_len <= fpi->rx_copybreak) {
288 /* +2 to make IP header L1 cache aligned */
289 skbn = netdev_alloc_skb(dev, pkt_len + 2);
291 skb_reserve(skbn, 2); /* align IP header */
292 skb_copy_from_linear_data(skb,
293 skbn->data, pkt_len);
300 skbn = netdev_alloc_skb(dev, ENET_RX_FRSIZE);
303 skb_align(skbn, ENET_RX_ALIGN);
307 skb_put(skb, pkt_len); /* Make room */
308 skb->protocol = eth_type_trans(skb, dev);
313 "Memory squeeze, dropping packet.\n");
314 fep->stats.rx_dropped++;
319 fep->rx_skbuff[curidx] = skbn;
320 CBDW_BUFADDR(bdp, dma_map_single(fep->dev, skbn->data,
321 L1_CACHE_ALIGN(PKT_MAXBUF_SIZE),
324 CBDW_SC(bdp, (sc & ~BD_ENET_RX_STATS) | BD_ENET_RX_EMPTY);
327 * Update BD pointer to next entry.
329 if ((sc & BD_ENET_RX_WRAP) == 0)
332 bdp = fep->rx_bd_base;
334 (*fep->ops->rx_bd_done)(dev);
342 static void fs_enet_tx(struct net_device *dev)
344 struct fs_enet_private *fep = netdev_priv(dev);
347 int dirtyidx, do_wake, do_restart;
350 spin_lock(&fep->tx_lock);
353 do_wake = do_restart = 0;
354 while (((sc = CBDR_SC(bdp)) & BD_ENET_TX_READY) == 0) {
355 dirtyidx = bdp - fep->tx_bd_base;
357 if (fep->tx_free == fep->tx_ring)
360 skb = fep->tx_skbuff[dirtyidx];
365 if (sc & (BD_ENET_TX_HB | BD_ENET_TX_LC |
366 BD_ENET_TX_RL | BD_ENET_TX_UN | BD_ENET_TX_CSL)) {
368 if (sc & BD_ENET_TX_HB) /* No heartbeat */
369 fep->stats.tx_heartbeat_errors++;
370 if (sc & BD_ENET_TX_LC) /* Late collision */
371 fep->stats.tx_window_errors++;
372 if (sc & BD_ENET_TX_RL) /* Retrans limit */
373 fep->stats.tx_aborted_errors++;
374 if (sc & BD_ENET_TX_UN) /* Underrun */
375 fep->stats.tx_fifo_errors++;
376 if (sc & BD_ENET_TX_CSL) /* Carrier lost */
377 fep->stats.tx_carrier_errors++;
379 if (sc & (BD_ENET_TX_LC | BD_ENET_TX_RL | BD_ENET_TX_UN)) {
380 fep->stats.tx_errors++;
384 fep->stats.tx_packets++;
386 if (sc & BD_ENET_TX_READY) {
388 "HEY! Enet xmit interrupt and TX_READY.\n");
392 * Deferred means some collisions occurred during transmit,
393 * but we eventually sent the packet OK.
395 if (sc & BD_ENET_TX_DEF)
396 fep->stats.collisions++;
399 dma_unmap_single(fep->dev, CBDR_BUFADDR(bdp),
400 skb->len, DMA_TO_DEVICE);
403 * Free the sk buffer associated with this last transmit.
405 dev_kfree_skb_irq(skb);
406 fep->tx_skbuff[dirtyidx] = NULL;
409 * Update pointer to next buffer descriptor to be transmitted.
411 if ((sc & BD_ENET_TX_WRAP) == 0)
414 bdp = fep->tx_bd_base;
417 * Since we have freed up a buffer, the ring is no longer
427 (*fep->ops->tx_restart)(dev);
429 spin_unlock(&fep->tx_lock);
432 netif_wake_queue(dev);
436 * The interrupt handler.
437 * This is called from the MPC core interrupt.
440 fs_enet_interrupt(int irq, void *dev_id)
442 struct net_device *dev = dev_id;
443 struct fs_enet_private *fep;
444 const struct fs_platform_info *fpi;
450 fep = netdev_priv(dev);
454 while ((int_events = (*fep->ops->get_int_events)(dev)) != 0) {
457 int_clr_events = int_events;
459 int_clr_events &= ~fep->ev_napi_rx;
461 (*fep->ops->clear_int_events)(dev, int_clr_events);
463 if (int_events & fep->ev_err)
464 (*fep->ops->ev_error)(dev, int_events);
466 if (int_events & fep->ev_rx) {
468 fs_enet_rx_non_napi(dev);
470 napi_ok = napi_schedule_prep(&fep->napi);
472 (*fep->ops->napi_disable_rx)(dev);
473 (*fep->ops->clear_int_events)(dev, fep->ev_napi_rx);
475 /* NOTE: it is possible for FCCs in NAPI mode */
476 /* to submit a spurious interrupt while in poll */
478 __napi_schedule(&fep->napi);
482 if (int_events & fep->ev_tx)
487 return IRQ_RETVAL(handled);
490 void fs_init_bds(struct net_device *dev)
492 struct fs_enet_private *fep = netdev_priv(dev);
499 fep->dirty_tx = fep->cur_tx = fep->tx_bd_base;
500 fep->tx_free = fep->tx_ring;
501 fep->cur_rx = fep->rx_bd_base;
504 * Initialize the receive buffer descriptors.
506 for (i = 0, bdp = fep->rx_bd_base; i < fep->rx_ring; i++, bdp++) {
507 skb = netdev_alloc_skb(dev, ENET_RX_FRSIZE);
510 "Memory squeeze, unable to allocate skb\n");
513 skb_align(skb, ENET_RX_ALIGN);
514 fep->rx_skbuff[i] = skb;
516 dma_map_single(fep->dev, skb->data,
517 L1_CACHE_ALIGN(PKT_MAXBUF_SIZE),
519 CBDW_DATLEN(bdp, 0); /* zero */
520 CBDW_SC(bdp, BD_ENET_RX_EMPTY |
521 ((i < fep->rx_ring - 1) ? 0 : BD_SC_WRAP));
524 * if we failed, fillup remainder
526 for (; i < fep->rx_ring; i++, bdp++) {
527 fep->rx_skbuff[i] = NULL;
528 CBDW_SC(bdp, (i < fep->rx_ring - 1) ? 0 : BD_SC_WRAP);
532 * ...and the same for transmit.
534 for (i = 0, bdp = fep->tx_bd_base; i < fep->tx_ring; i++, bdp++) {
535 fep->tx_skbuff[i] = NULL;
536 CBDW_BUFADDR(bdp, 0);
538 CBDW_SC(bdp, (i < fep->tx_ring - 1) ? 0 : BD_SC_WRAP);
542 void fs_cleanup_bds(struct net_device *dev)
544 struct fs_enet_private *fep = netdev_priv(dev);
550 * Reset SKB transmit buffers.
552 for (i = 0, bdp = fep->tx_bd_base; i < fep->tx_ring; i++, bdp++) {
553 if ((skb = fep->tx_skbuff[i]) == NULL)
557 dma_unmap_single(fep->dev, CBDR_BUFADDR(bdp),
558 skb->len, DMA_TO_DEVICE);
560 fep->tx_skbuff[i] = NULL;
565 * Reset SKB receive buffers
567 for (i = 0, bdp = fep->rx_bd_base; i < fep->rx_ring; i++, bdp++) {
568 if ((skb = fep->rx_skbuff[i]) == NULL)
572 dma_unmap_single(fep->dev, CBDR_BUFADDR(bdp),
573 L1_CACHE_ALIGN(PKT_MAXBUF_SIZE),
576 fep->rx_skbuff[i] = NULL;
582 /**********************************************************************************/
584 #ifdef CONFIG_FS_ENET_MPC5121_FEC
586 * MPC5121 FEC requeries 4-byte alignment for TX data buffer!
588 static struct sk_buff *tx_skb_align_workaround(struct net_device *dev,
591 struct sk_buff *new_skb;
592 struct fs_enet_private *fep = netdev_priv(dev);
595 new_skb = netdev_alloc_skb(dev, skb->len + 4);
597 if (net_ratelimit()) {
599 "Memory squeeze, dropping tx packet.\n");
604 /* Make sure new skb is properly aligned */
605 skb_align(new_skb, 4);
607 /* Copy data to new skb ... */
608 skb_copy_from_linear_data(skb, new_skb->data, skb->len);
609 skb_put(new_skb, skb->len);
611 /* ... and free an old one */
612 dev_kfree_skb_any(skb);
618 static int fs_enet_start_xmit(struct sk_buff *skb, struct net_device *dev)
620 struct fs_enet_private *fep = netdev_priv(dev);
626 #ifdef CONFIG_FS_ENET_MPC5121_FEC
627 if (((unsigned long)skb->data) & 0x3) {
628 skb = tx_skb_align_workaround(dev, skb);
631 * We have lost packet due to memory allocation error
632 * in tx_skb_align_workaround(). Hopefully original
633 * skb is still valid, so try transmit it later.
635 return NETDEV_TX_BUSY;
639 spin_lock_irqsave(&fep->tx_lock, flags);
642 * Fill in a Tx ring entry
646 if (!fep->tx_free || (CBDR_SC(bdp) & BD_ENET_TX_READY)) {
647 netif_stop_queue(dev);
648 spin_unlock_irqrestore(&fep->tx_lock, flags);
651 * Ooops. All transmit buffers are full. Bail out.
652 * This should not happen, since the tx queue should be stopped.
654 dev_warn(fep->dev, "tx queue full!.\n");
655 return NETDEV_TX_BUSY;
658 curidx = bdp - fep->tx_bd_base;
660 * Clear all of the status flags.
662 CBDC_SC(bdp, BD_ENET_TX_STATS);
667 fep->tx_skbuff[curidx] = skb;
669 fep->stats.tx_bytes += skb->len;
672 * Push the data cache so the CPM does not get stale memory data.
674 CBDW_BUFADDR(bdp, dma_map_single(fep->dev,
675 skb->data, skb->len, DMA_TO_DEVICE));
676 CBDW_DATLEN(bdp, skb->len);
679 * If this was the last BD in the ring, start at the beginning again.
681 if ((CBDR_SC(bdp) & BD_ENET_TX_WRAP) == 0)
684 fep->cur_tx = fep->tx_bd_base;
687 netif_stop_queue(dev);
689 /* Trigger transmission start */
690 sc = BD_ENET_TX_READY | BD_ENET_TX_INTR |
691 BD_ENET_TX_LAST | BD_ENET_TX_TC;
693 /* note that while FEC does not have this bit
694 * it marks it as available for software use
695 * yay for hw reuse :) */
697 sc |= BD_ENET_TX_PAD;
700 skb_tx_timestamp(skb);
702 (*fep->ops->tx_kickstart)(dev);
704 spin_unlock_irqrestore(&fep->tx_lock, flags);
709 static void fs_timeout(struct net_device *dev)
711 struct fs_enet_private *fep = netdev_priv(dev);
715 fep->stats.tx_errors++;
717 spin_lock_irqsave(&fep->lock, flags);
719 if (dev->flags & IFF_UP) {
720 phy_stop(fep->phydev);
721 (*fep->ops->stop)(dev);
722 (*fep->ops->restart)(dev);
723 phy_start(fep->phydev);
726 phy_start(fep->phydev);
727 wake = fep->tx_free && !(CBDR_SC(fep->cur_tx) & BD_ENET_TX_READY);
728 spin_unlock_irqrestore(&fep->lock, flags);
731 netif_wake_queue(dev);
734 /*-----------------------------------------------------------------------------
735 * generic link-change handler - should be sufficient for most cases
736 *-----------------------------------------------------------------------------*/
737 static void generic_adjust_link(struct net_device *dev)
739 struct fs_enet_private *fep = netdev_priv(dev);
740 struct phy_device *phydev = fep->phydev;
744 /* adjust to duplex mode */
745 if (phydev->duplex != fep->oldduplex) {
747 fep->oldduplex = phydev->duplex;
750 if (phydev->speed != fep->oldspeed) {
752 fep->oldspeed = phydev->speed;
761 fep->ops->restart(dev);
762 } else if (fep->oldlink) {
769 if (new_state && netif_msg_link(fep))
770 phy_print_status(phydev);
774 static void fs_adjust_link(struct net_device *dev)
776 struct fs_enet_private *fep = netdev_priv(dev);
779 spin_lock_irqsave(&fep->lock, flags);
781 if(fep->ops->adjust_link)
782 fep->ops->adjust_link(dev);
784 generic_adjust_link(dev);
786 spin_unlock_irqrestore(&fep->lock, flags);
789 static int fs_init_phy(struct net_device *dev)
791 struct fs_enet_private *fep = netdev_priv(dev);
792 struct phy_device *phydev;
793 phy_interface_t iface;
799 iface = fep->fpi->use_rmii ?
800 PHY_INTERFACE_MODE_RMII : PHY_INTERFACE_MODE_MII;
802 phydev = of_phy_connect(dev, fep->fpi->phy_node, &fs_adjust_link, 0,
805 phydev = of_phy_connect_fixed_link(dev, &fs_adjust_link,
809 dev_err(&dev->dev, "Could not attach to PHY\n");
813 fep->phydev = phydev;
818 static int fs_enet_open(struct net_device *dev)
820 struct fs_enet_private *fep = netdev_priv(dev);
824 /* to initialize the fep->cur_rx,... */
825 /* not doing this, will cause a crash in fs_enet_rx_napi */
826 fs_init_bds(fep->ndev);
828 if (fep->fpi->use_napi)
829 napi_enable(&fep->napi);
831 /* Install our interrupt handler. */
832 r = request_irq(fep->interrupt, fs_enet_interrupt, IRQF_SHARED,
835 dev_err(fep->dev, "Could not allocate FS_ENET IRQ!");
836 if (fep->fpi->use_napi)
837 napi_disable(&fep->napi);
841 err = fs_init_phy(dev);
843 free_irq(fep->interrupt, dev);
844 if (fep->fpi->use_napi)
845 napi_disable(&fep->napi);
848 phy_start(fep->phydev);
850 netif_start_queue(dev);
855 static int fs_enet_close(struct net_device *dev)
857 struct fs_enet_private *fep = netdev_priv(dev);
860 netif_stop_queue(dev);
861 netif_carrier_off(dev);
862 if (fep->fpi->use_napi)
863 napi_disable(&fep->napi);
864 phy_stop(fep->phydev);
866 spin_lock_irqsave(&fep->lock, flags);
867 spin_lock(&fep->tx_lock);
868 (*fep->ops->stop)(dev);
869 spin_unlock(&fep->tx_lock);
870 spin_unlock_irqrestore(&fep->lock, flags);
872 /* release any irqs */
873 phy_disconnect(fep->phydev);
875 free_irq(fep->interrupt, dev);
880 static struct net_device_stats *fs_enet_get_stats(struct net_device *dev)
882 struct fs_enet_private *fep = netdev_priv(dev);
886 /*************************************************************************/
888 static void fs_get_drvinfo(struct net_device *dev,
889 struct ethtool_drvinfo *info)
891 strcpy(info->driver, DRV_MODULE_NAME);
892 strcpy(info->version, DRV_MODULE_VERSION);
895 static int fs_get_regs_len(struct net_device *dev)
897 struct fs_enet_private *fep = netdev_priv(dev);
899 return (*fep->ops->get_regs_len)(dev);
902 static void fs_get_regs(struct net_device *dev, struct ethtool_regs *regs,
905 struct fs_enet_private *fep = netdev_priv(dev);
911 spin_lock_irqsave(&fep->lock, flags);
912 r = (*fep->ops->get_regs)(dev, p, &len);
913 spin_unlock_irqrestore(&fep->lock, flags);
919 static int fs_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
921 struct fs_enet_private *fep = netdev_priv(dev);
926 return phy_ethtool_gset(fep->phydev, cmd);
929 static int fs_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
931 struct fs_enet_private *fep = netdev_priv(dev);
936 return phy_ethtool_sset(fep->phydev, cmd);
939 static int fs_nway_reset(struct net_device *dev)
944 static u32 fs_get_msglevel(struct net_device *dev)
946 struct fs_enet_private *fep = netdev_priv(dev);
947 return fep->msg_enable;
950 static void fs_set_msglevel(struct net_device *dev, u32 value)
952 struct fs_enet_private *fep = netdev_priv(dev);
953 fep->msg_enable = value;
956 static const struct ethtool_ops fs_ethtool_ops = {
957 .get_drvinfo = fs_get_drvinfo,
958 .get_regs_len = fs_get_regs_len,
959 .get_settings = fs_get_settings,
960 .set_settings = fs_set_settings,
961 .nway_reset = fs_nway_reset,
962 .get_link = ethtool_op_get_link,
963 .get_msglevel = fs_get_msglevel,
964 .set_msglevel = fs_set_msglevel,
965 .get_regs = fs_get_regs,
966 .get_ts_info = ethtool_op_get_ts_info,
969 static int fs_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
971 struct fs_enet_private *fep = netdev_priv(dev);
973 if (!netif_running(dev))
976 return phy_mii_ioctl(fep->phydev, rq, cmd);
979 extern int fs_mii_connect(struct net_device *dev);
980 extern void fs_mii_disconnect(struct net_device *dev);
982 /**************************************************************************************/
984 #ifdef CONFIG_FS_ENET_HAS_FEC
985 #define IS_FEC(match) ((match)->data == &fs_fec_ops)
987 #define IS_FEC(match) 0
990 static const struct net_device_ops fs_enet_netdev_ops = {
991 .ndo_open = fs_enet_open,
992 .ndo_stop = fs_enet_close,
993 .ndo_get_stats = fs_enet_get_stats,
994 .ndo_start_xmit = fs_enet_start_xmit,
995 .ndo_tx_timeout = fs_timeout,
996 .ndo_set_rx_mode = fs_set_multicast_list,
997 .ndo_do_ioctl = fs_ioctl,
998 .ndo_validate_addr = eth_validate_addr,
999 .ndo_set_mac_address = eth_mac_addr,
1000 .ndo_change_mtu = eth_change_mtu,
1001 #ifdef CONFIG_NET_POLL_CONTROLLER
1002 .ndo_poll_controller = fs_enet_netpoll,
1006 static struct of_device_id fs_enet_match[];
1007 static int fs_enet_probe(struct platform_device *ofdev)
1009 const struct of_device_id *match;
1010 struct net_device *ndev;
1011 struct fs_enet_private *fep;
1012 struct fs_platform_info *fpi;
1015 const char *phy_connection_type;
1016 int privsize, len, ret = -ENODEV;
1018 match = of_match_device(fs_enet_match, &ofdev->dev);
1022 fpi = kzalloc(sizeof(*fpi), GFP_KERNEL);
1026 if (!IS_FEC(match)) {
1027 data = of_get_property(ofdev->dev.of_node, "fsl,cpm-command", &len);
1028 if (!data || len != 4)
1031 fpi->cp_command = *data;
1036 fpi->rx_copybreak = 240;
1038 fpi->napi_weight = 17;
1039 fpi->phy_node = of_parse_phandle(ofdev->dev.of_node, "phy-handle", 0);
1040 if ((!fpi->phy_node) && (!of_get_property(ofdev->dev.of_node, "fixed-link",
1044 if (of_device_is_compatible(ofdev->dev.of_node, "fsl,mpc5125-fec")) {
1045 phy_connection_type = of_get_property(ofdev->dev.of_node,
1046 "phy-connection-type", NULL);
1047 if (phy_connection_type && !strcmp("rmii", phy_connection_type))
1051 privsize = sizeof(*fep) +
1052 sizeof(struct sk_buff **) *
1053 (fpi->rx_ring + fpi->tx_ring);
1055 ndev = alloc_etherdev(privsize);
1061 SET_NETDEV_DEV(ndev, &ofdev->dev);
1062 dev_set_drvdata(&ofdev->dev, ndev);
1064 fep = netdev_priv(ndev);
1065 fep->dev = &ofdev->dev;
1068 fep->ops = match->data;
1070 ret = fep->ops->setup_data(ndev);
1074 fep->rx_skbuff = (struct sk_buff **)&fep[1];
1075 fep->tx_skbuff = fep->rx_skbuff + fpi->rx_ring;
1077 spin_lock_init(&fep->lock);
1078 spin_lock_init(&fep->tx_lock);
1080 mac_addr = of_get_mac_address(ofdev->dev.of_node);
1082 memcpy(ndev->dev_addr, mac_addr, 6);
1084 ret = fep->ops->allocate_bd(ndev);
1086 goto out_cleanup_data;
1088 fep->rx_bd_base = fep->ring_base;
1089 fep->tx_bd_base = fep->rx_bd_base + fpi->rx_ring;
1091 fep->tx_ring = fpi->tx_ring;
1092 fep->rx_ring = fpi->rx_ring;
1094 ndev->netdev_ops = &fs_enet_netdev_ops;
1095 ndev->watchdog_timeo = 2 * HZ;
1097 netif_napi_add(ndev, &fep->napi, fs_enet_rx_napi,
1100 ndev->ethtool_ops = &fs_ethtool_ops;
1102 init_timer(&fep->phy_timer_list);
1104 netif_carrier_off(ndev);
1106 ret = register_netdev(ndev);
1110 pr_info("%s: fs_enet: %pM\n", ndev->name, ndev->dev_addr);
1115 fep->ops->free_bd(ndev);
1117 fep->ops->cleanup_data(ndev);
1120 dev_set_drvdata(&ofdev->dev, NULL);
1122 of_node_put(fpi->phy_node);
1128 static int fs_enet_remove(struct platform_device *ofdev)
1130 struct net_device *ndev = dev_get_drvdata(&ofdev->dev);
1131 struct fs_enet_private *fep = netdev_priv(ndev);
1133 unregister_netdev(ndev);
1135 fep->ops->free_bd(ndev);
1136 fep->ops->cleanup_data(ndev);
1137 dev_set_drvdata(fep->dev, NULL);
1138 of_node_put(fep->fpi->phy_node);
1143 static struct of_device_id fs_enet_match[] = {
1144 #ifdef CONFIG_FS_ENET_HAS_SCC
1146 .compatible = "fsl,cpm1-scc-enet",
1147 .data = (void *)&fs_scc_ops,
1150 .compatible = "fsl,cpm2-scc-enet",
1151 .data = (void *)&fs_scc_ops,
1154 #ifdef CONFIG_FS_ENET_HAS_FCC
1156 .compatible = "fsl,cpm2-fcc-enet",
1157 .data = (void *)&fs_fcc_ops,
1160 #ifdef CONFIG_FS_ENET_HAS_FEC
1161 #ifdef CONFIG_FS_ENET_MPC5121_FEC
1163 .compatible = "fsl,mpc5121-fec",
1164 .data = (void *)&fs_fec_ops,
1167 .compatible = "fsl,mpc5125-fec",
1168 .data = (void *)&fs_fec_ops,
1172 .compatible = "fsl,pq1-fec-enet",
1173 .data = (void *)&fs_fec_ops,
1179 MODULE_DEVICE_TABLE(of, fs_enet_match);
1181 static struct platform_driver fs_enet_driver = {
1183 .owner = THIS_MODULE,
1185 .of_match_table = fs_enet_match,
1187 .probe = fs_enet_probe,
1188 .remove = fs_enet_remove,
1191 #ifdef CONFIG_NET_POLL_CONTROLLER
1192 static void fs_enet_netpoll(struct net_device *dev)
1194 disable_irq(dev->irq);
1195 fs_enet_interrupt(dev->irq, dev);
1196 enable_irq(dev->irq);
1200 module_platform_driver(fs_enet_driver);