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/vmalloc.h>
41 #include <asm/pgtable.h>
43 #include <asm/uaccess.h>
47 /*************************************************/
49 static char version
[] __devinitdata
=
50 DRV_MODULE_NAME
".c:v" DRV_MODULE_VERSION
" (" DRV_MODULE_RELDATE
")" "\n";
52 MODULE_AUTHOR("Pantelis Antoniou <panto@intracom.gr>");
53 MODULE_DESCRIPTION("Freescale Ethernet Driver");
54 MODULE_LICENSE("GPL");
55 MODULE_VERSION(DRV_MODULE_VERSION
);
57 int fs_enet_debug
= -1; /* -1 == use FS_ENET_DEF_MSG_ENABLE as value */
58 module_param(fs_enet_debug
, int, 0);
59 MODULE_PARM_DESC(fs_enet_debug
,
60 "Freescale bitmapped debugging message enable value");
63 static void fs_set_multicast_list(struct net_device
*dev
)
65 struct fs_enet_private
*fep
= netdev_priv(dev
);
67 (*fep
->ops
->set_multicast_list
)(dev
);
70 /* NAPI receive function */
71 static int fs_enet_rx_napi(struct napi_struct
*napi
, int budget
)
73 struct fs_enet_private
*fep
= container_of(napi
, struct fs_enet_private
, napi
);
74 struct net_device
*dev
= to_net_dev(fep
->dev
);
75 const struct fs_platform_info
*fpi
= fep
->fpi
;
77 struct sk_buff
*skb
, *skbn
, *skbt
;
82 if (!netif_running(dev
))
86 * First, grab all of the stats for the incoming packet.
87 * These get messed up if we get called due to a busy condition.
91 /* clear RX status bits for napi*/
92 (*fep
->ops
->napi_clear_rx_event
)(dev
);
94 while (((sc
= CBDR_SC(bdp
)) & BD_ENET_RX_EMPTY
) == 0) {
95 curidx
= bdp
- fep
->rx_bd_base
;
98 * Since we have allocated space to hold a complete frame,
99 * the last indicator should be set.
101 if ((sc
& BD_ENET_RX_LAST
) == 0)
102 printk(KERN_WARNING DRV_MODULE_NAME
103 ": %s rcv is not +last\n",
109 if (sc
& (BD_ENET_RX_LG
| BD_ENET_RX_SH
| BD_ENET_RX_CL
|
110 BD_ENET_RX_NO
| BD_ENET_RX_CR
| BD_ENET_RX_OV
)) {
111 fep
->stats
.rx_errors
++;
112 /* Frame too long or too short. */
113 if (sc
& (BD_ENET_RX_LG
| BD_ENET_RX_SH
))
114 fep
->stats
.rx_length_errors
++;
115 /* Frame alignment */
116 if (sc
& (BD_ENET_RX_NO
| BD_ENET_RX_CL
))
117 fep
->stats
.rx_frame_errors
++;
119 if (sc
& BD_ENET_RX_CR
)
120 fep
->stats
.rx_crc_errors
++;
122 if (sc
& BD_ENET_RX_OV
)
123 fep
->stats
.rx_crc_errors
++;
125 skb
= fep
->rx_skbuff
[curidx
];
127 dma_unmap_single(fep
->dev
, CBDR_BUFADDR(bdp
),
128 L1_CACHE_ALIGN(PKT_MAXBUF_SIZE
),
134 skb
= fep
->rx_skbuff
[curidx
];
136 dma_unmap_single(fep
->dev
, CBDR_BUFADDR(bdp
),
137 L1_CACHE_ALIGN(PKT_MAXBUF_SIZE
),
141 * Process the incoming frame.
143 fep
->stats
.rx_packets
++;
144 pkt_len
= CBDR_DATLEN(bdp
) - 4; /* remove CRC */
145 fep
->stats
.rx_bytes
+= pkt_len
+ 4;
147 if (pkt_len
<= fpi
->rx_copybreak
) {
148 /* +2 to make IP header L1 cache aligned */
149 skbn
= dev_alloc_skb(pkt_len
+ 2);
151 skb_reserve(skbn
, 2); /* align IP header */
152 skb_copy_from_linear_data(skb
,
153 skbn
->data
, pkt_len
);
160 skbn
= dev_alloc_skb(ENET_RX_FRSIZE
);
163 skb_put(skb
, pkt_len
); /* Make room */
164 skb
->protocol
= eth_type_trans(skb
, dev
);
166 netif_receive_skb(skb
);
168 printk(KERN_WARNING DRV_MODULE_NAME
169 ": %s Memory squeeze, dropping packet.\n",
171 fep
->stats
.rx_dropped
++;
176 fep
->rx_skbuff
[curidx
] = skbn
;
177 CBDW_BUFADDR(bdp
, dma_map_single(fep
->dev
, skbn
->data
,
178 L1_CACHE_ALIGN(PKT_MAXBUF_SIZE
),
181 CBDW_SC(bdp
, (sc
& ~BD_ENET_RX_STATS
) | BD_ENET_RX_EMPTY
);
184 * Update BD pointer to next entry.
186 if ((sc
& BD_ENET_RX_WRAP
) == 0)
189 bdp
= fep
->rx_bd_base
;
191 (*fep
->ops
->rx_bd_done
)(dev
);
193 if (received
>= budget
)
199 if (received
>= budget
) {
201 netif_rx_complete(dev
, napi
);
202 (*fep
->ops
->napi_enable_rx
)(dev
);
207 /* non NAPI receive function */
208 static int fs_enet_rx_non_napi(struct net_device
*dev
)
210 struct fs_enet_private
*fep
= netdev_priv(dev
);
211 const struct fs_platform_info
*fpi
= fep
->fpi
;
213 struct sk_buff
*skb
, *skbn
, *skbt
;
218 * First, grab all of the stats for the incoming packet.
219 * These get messed up if we get called due to a busy condition.
223 while (((sc
= CBDR_SC(bdp
)) & BD_ENET_RX_EMPTY
) == 0) {
225 curidx
= bdp
- fep
->rx_bd_base
;
228 * Since we have allocated space to hold a complete frame,
229 * the last indicator should be set.
231 if ((sc
& BD_ENET_RX_LAST
) == 0)
232 printk(KERN_WARNING DRV_MODULE_NAME
233 ": %s rcv is not +last\n",
239 if (sc
& (BD_ENET_RX_LG
| BD_ENET_RX_SH
| BD_ENET_RX_CL
|
240 BD_ENET_RX_NO
| BD_ENET_RX_CR
| BD_ENET_RX_OV
)) {
241 fep
->stats
.rx_errors
++;
242 /* Frame too long or too short. */
243 if (sc
& (BD_ENET_RX_LG
| BD_ENET_RX_SH
))
244 fep
->stats
.rx_length_errors
++;
245 /* Frame alignment */
246 if (sc
& (BD_ENET_RX_NO
| BD_ENET_RX_CL
))
247 fep
->stats
.rx_frame_errors
++;
249 if (sc
& BD_ENET_RX_CR
)
250 fep
->stats
.rx_crc_errors
++;
252 if (sc
& BD_ENET_RX_OV
)
253 fep
->stats
.rx_crc_errors
++;
255 skb
= fep
->rx_skbuff
[curidx
];
257 dma_unmap_single(fep
->dev
, CBDR_BUFADDR(bdp
),
258 L1_CACHE_ALIGN(PKT_MAXBUF_SIZE
),
265 skb
= fep
->rx_skbuff
[curidx
];
267 dma_unmap_single(fep
->dev
, CBDR_BUFADDR(bdp
),
268 L1_CACHE_ALIGN(PKT_MAXBUF_SIZE
),
272 * Process the incoming frame.
274 fep
->stats
.rx_packets
++;
275 pkt_len
= CBDR_DATLEN(bdp
) - 4; /* remove CRC */
276 fep
->stats
.rx_bytes
+= pkt_len
+ 4;
278 if (pkt_len
<= fpi
->rx_copybreak
) {
279 /* +2 to make IP header L1 cache aligned */
280 skbn
= dev_alloc_skb(pkt_len
+ 2);
282 skb_reserve(skbn
, 2); /* align IP header */
283 skb_copy_from_linear_data(skb
,
284 skbn
->data
, pkt_len
);
291 skbn
= dev_alloc_skb(ENET_RX_FRSIZE
);
294 skb_put(skb
, pkt_len
); /* Make room */
295 skb
->protocol
= eth_type_trans(skb
, dev
);
299 printk(KERN_WARNING DRV_MODULE_NAME
300 ": %s Memory squeeze, dropping packet.\n",
302 fep
->stats
.rx_dropped
++;
307 fep
->rx_skbuff
[curidx
] = skbn
;
308 CBDW_BUFADDR(bdp
, dma_map_single(fep
->dev
, skbn
->data
,
309 L1_CACHE_ALIGN(PKT_MAXBUF_SIZE
),
312 CBDW_SC(bdp
, (sc
& ~BD_ENET_RX_STATS
) | BD_ENET_RX_EMPTY
);
315 * Update BD pointer to next entry.
317 if ((sc
& BD_ENET_RX_WRAP
) == 0)
320 bdp
= fep
->rx_bd_base
;
322 (*fep
->ops
->rx_bd_done
)(dev
);
330 static void fs_enet_tx(struct net_device
*dev
)
332 struct fs_enet_private
*fep
= netdev_priv(dev
);
335 int dirtyidx
, do_wake
, do_restart
;
338 spin_lock(&fep
->lock
);
341 do_wake
= do_restart
= 0;
342 while (((sc
= CBDR_SC(bdp
)) & BD_ENET_TX_READY
) == 0) {
344 dirtyidx
= bdp
- fep
->tx_bd_base
;
346 if (fep
->tx_free
== fep
->tx_ring
)
349 skb
= fep
->tx_skbuff
[dirtyidx
];
354 if (sc
& (BD_ENET_TX_HB
| BD_ENET_TX_LC
|
355 BD_ENET_TX_RL
| BD_ENET_TX_UN
| BD_ENET_TX_CSL
)) {
357 if (sc
& BD_ENET_TX_HB
) /* No heartbeat */
358 fep
->stats
.tx_heartbeat_errors
++;
359 if (sc
& BD_ENET_TX_LC
) /* Late collision */
360 fep
->stats
.tx_window_errors
++;
361 if (sc
& BD_ENET_TX_RL
) /* Retrans limit */
362 fep
->stats
.tx_aborted_errors
++;
363 if (sc
& BD_ENET_TX_UN
) /* Underrun */
364 fep
->stats
.tx_fifo_errors
++;
365 if (sc
& BD_ENET_TX_CSL
) /* Carrier lost */
366 fep
->stats
.tx_carrier_errors
++;
368 if (sc
& (BD_ENET_TX_LC
| BD_ENET_TX_RL
| BD_ENET_TX_UN
)) {
369 fep
->stats
.tx_errors
++;
373 fep
->stats
.tx_packets
++;
375 if (sc
& BD_ENET_TX_READY
)
376 printk(KERN_WARNING DRV_MODULE_NAME
377 ": %s HEY! Enet xmit interrupt and TX_READY.\n",
381 * Deferred means some collisions occurred during transmit,
382 * but we eventually sent the packet OK.
384 if (sc
& BD_ENET_TX_DEF
)
385 fep
->stats
.collisions
++;
388 dma_unmap_single(fep
->dev
, CBDR_BUFADDR(bdp
),
389 skb
->len
, DMA_TO_DEVICE
);
392 * Free the sk buffer associated with this last transmit.
394 dev_kfree_skb_irq(skb
);
395 fep
->tx_skbuff
[dirtyidx
] = NULL
;
398 * Update pointer to next buffer descriptor to be transmitted.
400 if ((sc
& BD_ENET_TX_WRAP
) == 0)
403 bdp
= fep
->tx_bd_base
;
406 * Since we have freed up a buffer, the ring is no longer
416 (*fep
->ops
->tx_restart
)(dev
);
418 spin_unlock(&fep
->lock
);
421 netif_wake_queue(dev
);
425 * The interrupt handler.
426 * This is called from the MPC core interrupt.
429 fs_enet_interrupt(int irq
, void *dev_id
)
431 struct net_device
*dev
= dev_id
;
432 struct fs_enet_private
*fep
;
433 const struct fs_platform_info
*fpi
;
439 fep
= netdev_priv(dev
);
443 while ((int_events
= (*fep
->ops
->get_int_events
)(dev
)) != 0) {
447 int_clr_events
= int_events
;
449 int_clr_events
&= ~fep
->ev_napi_rx
;
451 (*fep
->ops
->clear_int_events
)(dev
, int_clr_events
);
453 if (int_events
& fep
->ev_err
)
454 (*fep
->ops
->ev_error
)(dev
, int_events
);
456 if (int_events
& fep
->ev_rx
) {
458 fs_enet_rx_non_napi(dev
);
460 napi_ok
= napi_schedule_prep(&fep
->napi
);
462 (*fep
->ops
->napi_disable_rx
)(dev
);
463 (*fep
->ops
->clear_int_events
)(dev
, fep
->ev_napi_rx
);
465 /* NOTE: it is possible for FCCs in NAPI mode */
466 /* to submit a spurious interrupt while in poll */
468 __netif_rx_schedule(dev
, &fep
->napi
);
472 if (int_events
& fep
->ev_tx
)
477 return IRQ_RETVAL(handled
);
480 void fs_init_bds(struct net_device
*dev
)
482 struct fs_enet_private
*fep
= netdev_priv(dev
);
489 fep
->dirty_tx
= fep
->cur_tx
= fep
->tx_bd_base
;
490 fep
->tx_free
= fep
->tx_ring
;
491 fep
->cur_rx
= fep
->rx_bd_base
;
494 * Initialize the receive buffer descriptors.
496 for (i
= 0, bdp
= fep
->rx_bd_base
; i
< fep
->rx_ring
; i
++, bdp
++) {
497 skb
= dev_alloc_skb(ENET_RX_FRSIZE
);
499 printk(KERN_WARNING DRV_MODULE_NAME
500 ": %s Memory squeeze, unable to allocate skb\n",
504 fep
->rx_skbuff
[i
] = skb
;
506 dma_map_single(fep
->dev
, skb
->data
,
507 L1_CACHE_ALIGN(PKT_MAXBUF_SIZE
),
509 CBDW_DATLEN(bdp
, 0); /* zero */
510 CBDW_SC(bdp
, BD_ENET_RX_EMPTY
|
511 ((i
< fep
->rx_ring
- 1) ? 0 : BD_SC_WRAP
));
514 * if we failed, fillup remainder
516 for (; i
< fep
->rx_ring
; i
++, bdp
++) {
517 fep
->rx_skbuff
[i
] = NULL
;
518 CBDW_SC(bdp
, (i
< fep
->rx_ring
- 1) ? 0 : BD_SC_WRAP
);
522 * ...and the same for transmit.
524 for (i
= 0, bdp
= fep
->tx_bd_base
; i
< fep
->tx_ring
; i
++, bdp
++) {
525 fep
->tx_skbuff
[i
] = NULL
;
526 CBDW_BUFADDR(bdp
, 0);
528 CBDW_SC(bdp
, (i
< fep
->tx_ring
- 1) ? 0 : BD_SC_WRAP
);
532 void fs_cleanup_bds(struct net_device
*dev
)
534 struct fs_enet_private
*fep
= netdev_priv(dev
);
540 * Reset SKB transmit buffers.
542 for (i
= 0, bdp
= fep
->tx_bd_base
; i
< fep
->tx_ring
; i
++, bdp
++) {
543 if ((skb
= fep
->tx_skbuff
[i
]) == NULL
)
547 dma_unmap_single(fep
->dev
, CBDR_BUFADDR(bdp
),
548 skb
->len
, DMA_TO_DEVICE
);
550 fep
->tx_skbuff
[i
] = NULL
;
555 * Reset SKB receive buffers
557 for (i
= 0, bdp
= fep
->rx_bd_base
; i
< fep
->rx_ring
; i
++, bdp
++) {
558 if ((skb
= fep
->rx_skbuff
[i
]) == NULL
)
562 dma_unmap_single(fep
->dev
, CBDR_BUFADDR(bdp
),
563 L1_CACHE_ALIGN(PKT_MAXBUF_SIZE
),
566 fep
->rx_skbuff
[i
] = NULL
;
572 /**********************************************************************************/
574 static int fs_enet_start_xmit(struct sk_buff
*skb
, struct net_device
*dev
)
576 struct fs_enet_private
*fep
= netdev_priv(dev
);
582 spin_lock_irqsave(&fep
->tx_lock
, flags
);
585 * Fill in a Tx ring entry
589 if (!fep
->tx_free
|| (CBDR_SC(bdp
) & BD_ENET_TX_READY
)) {
590 netif_stop_queue(dev
);
591 spin_unlock_irqrestore(&fep
->tx_lock
, flags
);
594 * Ooops. All transmit buffers are full. Bail out.
595 * This should not happen, since the tx queue should be stopped.
597 printk(KERN_WARNING DRV_MODULE_NAME
598 ": %s tx queue full!.\n", dev
->name
);
599 return NETDEV_TX_BUSY
;
602 curidx
= bdp
- fep
->tx_bd_base
;
604 * Clear all of the status flags.
606 CBDC_SC(bdp
, BD_ENET_TX_STATS
);
611 fep
->tx_skbuff
[curidx
] = skb
;
613 fep
->stats
.tx_bytes
+= skb
->len
;
616 * Push the data cache so the CPM does not get stale memory data.
618 CBDW_BUFADDR(bdp
, dma_map_single(fep
->dev
,
619 skb
->data
, skb
->len
, DMA_TO_DEVICE
));
620 CBDW_DATLEN(bdp
, skb
->len
);
622 dev
->trans_start
= jiffies
;
625 * If this was the last BD in the ring, start at the beginning again.
627 if ((CBDR_SC(bdp
) & BD_ENET_TX_WRAP
) == 0)
630 fep
->cur_tx
= fep
->tx_bd_base
;
633 netif_stop_queue(dev
);
635 /* Trigger transmission start */
636 sc
= BD_ENET_TX_READY
| BD_ENET_TX_INTR
|
637 BD_ENET_TX_LAST
| BD_ENET_TX_TC
;
639 /* note that while FEC does not have this bit
640 * it marks it as available for software use
641 * yay for hw reuse :) */
643 sc
|= BD_ENET_TX_PAD
;
646 (*fep
->ops
->tx_kickstart
)(dev
);
648 spin_unlock_irqrestore(&fep
->tx_lock
, flags
);
653 static int fs_request_irq(struct net_device
*dev
, int irq
, const char *name
,
656 struct fs_enet_private
*fep
= netdev_priv(dev
);
658 (*fep
->ops
->pre_request_irq
)(dev
, irq
);
659 return request_irq(irq
, irqf
, IRQF_SHARED
, name
, dev
);
662 static void fs_free_irq(struct net_device
*dev
, int irq
)
664 struct fs_enet_private
*fep
= netdev_priv(dev
);
667 (*fep
->ops
->post_free_irq
)(dev
, irq
);
670 static void fs_timeout(struct net_device
*dev
)
672 struct fs_enet_private
*fep
= netdev_priv(dev
);
676 fep
->stats
.tx_errors
++;
678 spin_lock_irqsave(&fep
->lock
, flags
);
680 if (dev
->flags
& IFF_UP
) {
681 phy_stop(fep
->phydev
);
682 (*fep
->ops
->stop
)(dev
);
683 (*fep
->ops
->restart
)(dev
);
684 phy_start(fep
->phydev
);
687 phy_start(fep
->phydev
);
688 wake
= fep
->tx_free
&& !(CBDR_SC(fep
->cur_tx
) & BD_ENET_TX_READY
);
689 spin_unlock_irqrestore(&fep
->lock
, flags
);
692 netif_wake_queue(dev
);
695 /*-----------------------------------------------------------------------------
696 * generic link-change handler - should be sufficient for most cases
697 *-----------------------------------------------------------------------------*/
698 static void generic_adjust_link(struct net_device
*dev
)
700 struct fs_enet_private
*fep
= netdev_priv(dev
);
701 struct phy_device
*phydev
= fep
->phydev
;
706 /* adjust to duplex mode */
707 if (phydev
->duplex
!= fep
->oldduplex
){
709 fep
->oldduplex
= phydev
->duplex
;
712 if (phydev
->speed
!= fep
->oldspeed
) {
714 fep
->oldspeed
= phydev
->speed
;
721 netif_carrier_on(dev
);
722 netif_start_queue(dev
);
726 fep
->ops
->restart(dev
);
728 } else if (fep
->oldlink
) {
733 netif_carrier_off(dev
);
734 netif_stop_queue(dev
);
737 if (new_state
&& netif_msg_link(fep
))
738 phy_print_status(phydev
);
742 static void fs_adjust_link(struct net_device
*dev
)
744 struct fs_enet_private
*fep
= netdev_priv(dev
);
747 spin_lock_irqsave(&fep
->lock
, flags
);
749 if(fep
->ops
->adjust_link
)
750 fep
->ops
->adjust_link(dev
);
752 generic_adjust_link(dev
);
754 spin_unlock_irqrestore(&fep
->lock
, flags
);
757 static int fs_init_phy(struct net_device
*dev
)
759 struct fs_enet_private
*fep
= netdev_priv(dev
);
760 struct phy_device
*phydev
;
766 phydev
= phy_connect(dev
, fep
->fpi
->bus_id
, &fs_adjust_link
, 0,
767 PHY_INTERFACE_MODE_MII
);
769 printk("No phy bus ID specified in BSP code\n");
772 if (IS_ERR(phydev
)) {
773 printk(KERN_ERR
"%s: Could not attach to PHY\n", dev
->name
);
774 return PTR_ERR(phydev
);
777 fep
->phydev
= phydev
;
783 static int fs_enet_open(struct net_device
*dev
)
785 struct fs_enet_private
*fep
= netdev_priv(dev
);
789 napi_enable(&fep
->napi
);
791 /* Install our interrupt handler. */
792 r
= fs_request_irq(dev
, fep
->interrupt
, "fs_enet-mac", fs_enet_interrupt
);
794 printk(KERN_ERR DRV_MODULE_NAME
795 ": %s Could not allocate FS_ENET IRQ!", dev
->name
);
796 napi_disable(&fep
->napi
);
800 err
= fs_init_phy(dev
);
802 napi_disable(&fep
->napi
);
805 phy_start(fep
->phydev
);
810 static int fs_enet_close(struct net_device
*dev
)
812 struct fs_enet_private
*fep
= netdev_priv(dev
);
815 netif_stop_queue(dev
);
816 netif_carrier_off(dev
);
817 napi_disable(&fep
->napi
);
818 phy_stop(fep
->phydev
);
820 spin_lock_irqsave(&fep
->lock
, flags
);
821 (*fep
->ops
->stop
)(dev
);
822 spin_unlock_irqrestore(&fep
->lock
, flags
);
824 /* release any irqs */
825 phy_disconnect(fep
->phydev
);
827 fs_free_irq(dev
, fep
->interrupt
);
832 static struct net_device_stats
*fs_enet_get_stats(struct net_device
*dev
)
834 struct fs_enet_private
*fep
= netdev_priv(dev
);
838 /*************************************************************************/
840 static void fs_get_drvinfo(struct net_device
*dev
,
841 struct ethtool_drvinfo
*info
)
843 strcpy(info
->driver
, DRV_MODULE_NAME
);
844 strcpy(info
->version
, DRV_MODULE_VERSION
);
847 static int fs_get_regs_len(struct net_device
*dev
)
849 struct fs_enet_private
*fep
= netdev_priv(dev
);
851 return (*fep
->ops
->get_regs_len
)(dev
);
854 static void fs_get_regs(struct net_device
*dev
, struct ethtool_regs
*regs
,
857 struct fs_enet_private
*fep
= netdev_priv(dev
);
863 spin_lock_irqsave(&fep
->lock
, flags
);
864 r
= (*fep
->ops
->get_regs
)(dev
, p
, &len
);
865 spin_unlock_irqrestore(&fep
->lock
, flags
);
871 static int fs_get_settings(struct net_device
*dev
, struct ethtool_cmd
*cmd
)
873 struct fs_enet_private
*fep
= netdev_priv(dev
);
874 return phy_ethtool_gset(fep
->phydev
, cmd
);
877 static int fs_set_settings(struct net_device
*dev
, struct ethtool_cmd
*cmd
)
879 struct fs_enet_private
*fep
= netdev_priv(dev
);
880 phy_ethtool_sset(fep
->phydev
, cmd
);
884 static int fs_nway_reset(struct net_device
*dev
)
889 static u32
fs_get_msglevel(struct net_device
*dev
)
891 struct fs_enet_private
*fep
= netdev_priv(dev
);
892 return fep
->msg_enable
;
895 static void fs_set_msglevel(struct net_device
*dev
, u32 value
)
897 struct fs_enet_private
*fep
= netdev_priv(dev
);
898 fep
->msg_enable
= value
;
901 static const struct ethtool_ops fs_ethtool_ops
= {
902 .get_drvinfo
= fs_get_drvinfo
,
903 .get_regs_len
= fs_get_regs_len
,
904 .get_settings
= fs_get_settings
,
905 .set_settings
= fs_set_settings
,
906 .nway_reset
= fs_nway_reset
,
907 .get_link
= ethtool_op_get_link
,
908 .get_msglevel
= fs_get_msglevel
,
909 .set_msglevel
= fs_set_msglevel
,
910 .get_tx_csum
= ethtool_op_get_tx_csum
,
911 .set_tx_csum
= ethtool_op_set_tx_csum
, /* local! */
912 .get_sg
= ethtool_op_get_sg
,
913 .set_sg
= ethtool_op_set_sg
,
914 .get_regs
= fs_get_regs
,
917 static int fs_ioctl(struct net_device
*dev
, struct ifreq
*rq
, int cmd
)
919 struct fs_enet_private
*fep
= netdev_priv(dev
);
920 struct mii_ioctl_data
*mii
= (struct mii_ioctl_data
*)&rq
->ifr_data
;
924 if (!netif_running(dev
))
927 spin_lock_irqsave(&fep
->lock
, flags
);
928 rc
= phy_mii_ioctl(fep
->phydev
, mii
, cmd
);
929 spin_unlock_irqrestore(&fep
->lock
, flags
);
933 extern int fs_mii_connect(struct net_device
*dev
);
934 extern void fs_mii_disconnect(struct net_device
*dev
);
936 static struct net_device
*fs_init_instance(struct device
*dev
,
937 struct fs_platform_info
*fpi
)
939 struct net_device
*ndev
= NULL
;
940 struct fs_enet_private
*fep
= NULL
;
941 int privsize
, i
, r
, err
= 0, registered
= 0;
943 fpi
->fs_no
= fs_get_id(fpi
);
945 if ((unsigned int)fpi
->fs_no
>= FS_MAX_INDEX
)
946 return ERR_PTR(-EINVAL
);
948 privsize
= sizeof(*fep
) + (sizeof(struct sk_buff
**) *
949 (fpi
->rx_ring
+ fpi
->tx_ring
));
951 ndev
= alloc_etherdev(privsize
);
956 SET_MODULE_OWNER(ndev
);
958 fep
= netdev_priv(ndev
);
961 dev_set_drvdata(dev
, ndev
);
963 if (fpi
->init_ioports
)
964 fpi
->init_ioports((struct fs_platform_info
*)fpi
);
966 #ifdef CONFIG_FS_ENET_HAS_FEC
967 if (fs_get_fec_index(fpi
->fs_no
) >= 0)
968 fep
->ops
= &fs_fec_ops
;
971 #ifdef CONFIG_FS_ENET_HAS_SCC
972 if (fs_get_scc_index(fpi
->fs_no
) >=0 )
973 fep
->ops
= &fs_scc_ops
;
976 #ifdef CONFIG_FS_ENET_HAS_FCC
977 if (fs_get_fcc_index(fpi
->fs_no
) >= 0)
978 fep
->ops
= &fs_fcc_ops
;
981 if (fep
->ops
== NULL
) {
982 printk(KERN_ERR DRV_MODULE_NAME
983 ": %s No matching ops found (%d).\n",
984 ndev
->name
, fpi
->fs_no
);
989 r
= (*fep
->ops
->setup_data
)(ndev
);
991 printk(KERN_ERR DRV_MODULE_NAME
992 ": %s setup_data failed\n",
998 /* point rx_skbuff, tx_skbuff */
999 fep
->rx_skbuff
= (struct sk_buff
**)&fep
[1];
1000 fep
->tx_skbuff
= fep
->rx_skbuff
+ fpi
->rx_ring
;
1003 spin_lock_init(&fep
->lock
);
1004 spin_lock_init(&fep
->tx_lock
);
1007 * Set the Ethernet address.
1009 for (i
= 0; i
< 6; i
++)
1010 ndev
->dev_addr
[i
] = fpi
->macaddr
[i
];
1012 r
= (*fep
->ops
->allocate_bd
)(ndev
);
1014 if (fep
->ring_base
== NULL
) {
1015 printk(KERN_ERR DRV_MODULE_NAME
1016 ": %s buffer descriptor alloc failed (%d).\n", ndev
->name
, r
);
1022 * Set receive and transmit descriptor base.
1024 fep
->rx_bd_base
= fep
->ring_base
;
1025 fep
->tx_bd_base
= fep
->rx_bd_base
+ fpi
->rx_ring
;
1027 /* initialize ring size variables */
1028 fep
->tx_ring
= fpi
->tx_ring
;
1029 fep
->rx_ring
= fpi
->rx_ring
;
1032 * The FEC Ethernet specific entries in the device structure.
1034 ndev
->open
= fs_enet_open
;
1035 ndev
->hard_start_xmit
= fs_enet_start_xmit
;
1036 ndev
->tx_timeout
= fs_timeout
;
1037 ndev
->watchdog_timeo
= 2 * HZ
;
1038 ndev
->stop
= fs_enet_close
;
1039 ndev
->get_stats
= fs_enet_get_stats
;
1040 ndev
->set_multicast_list
= fs_set_multicast_list
;
1041 netif_napi_add(ndev
, &fep
->napi
,
1042 fs_enet_rx_napi
, fpi
->napi_weight
);
1044 ndev
->ethtool_ops
= &fs_ethtool_ops
;
1045 ndev
->do_ioctl
= fs_ioctl
;
1047 init_timer(&fep
->phy_timer_list
);
1049 netif_carrier_off(ndev
);
1051 err
= register_netdev(ndev
);
1053 printk(KERN_ERR DRV_MODULE_NAME
1054 ": %s register_netdev failed.\n", ndev
->name
);
1066 unregister_netdev(ndev
);
1069 (*fep
->ops
->free_bd
)(ndev
);
1070 (*fep
->ops
->cleanup_data
)(ndev
);
1076 dev_set_drvdata(dev
, NULL
);
1078 return ERR_PTR(err
);
1081 static int fs_cleanup_instance(struct net_device
*ndev
)
1083 struct fs_enet_private
*fep
;
1084 const struct fs_platform_info
*fpi
;
1090 fep
= netdev_priv(ndev
);
1096 unregister_netdev(ndev
);
1098 dma_free_coherent(fep
->dev
, (fpi
->tx_ring
+ fpi
->rx_ring
) * sizeof(cbd_t
),
1099 fep
->ring_base
, fep
->ring_mem_addr
);
1102 (*fep
->ops
->cleanup_data
)(ndev
);
1106 dev_set_drvdata(dev
, NULL
);
1115 /**************************************************************************************/
1117 /* handy pointer to the immap */
1118 void *fs_enet_immap
= NULL
;
1120 static int setup_immap(void)
1122 phys_addr_t paddr
= 0;
1123 unsigned long size
= 0;
1127 size
= 0x10000; /* map 64K */
1131 paddr
= CPM_MAP_ADDR
;
1132 size
= 0x40000; /* map 256 K */
1134 fs_enet_immap
= ioremap(paddr
, size
);
1135 if (fs_enet_immap
== NULL
)
1136 return -EBADF
; /* XXX ahem; maybe just BUG_ON? */
1141 static void cleanup_immap(void)
1143 if (fs_enet_immap
!= NULL
) {
1144 iounmap(fs_enet_immap
);
1145 fs_enet_immap
= NULL
;
1149 /**************************************************************************************/
1151 static int __devinit
fs_enet_probe(struct device
*dev
)
1153 struct net_device
*ndev
;
1155 /* no fixup - no device */
1156 if (dev
->platform_data
== NULL
) {
1157 printk(KERN_INFO
"fs_enet: "
1158 "probe called with no platform data; "
1159 "remove unused devices\n");
1163 ndev
= fs_init_instance(dev
, dev
->platform_data
);
1165 return PTR_ERR(ndev
);
1169 static int fs_enet_remove(struct device
*dev
)
1171 return fs_cleanup_instance(dev_get_drvdata(dev
));
1174 static struct device_driver fs_enet_fec_driver
= {
1175 .name
= "fsl-cpm-fec",
1176 .bus
= &platform_bus_type
,
1177 .probe
= fs_enet_probe
,
1178 .remove
= fs_enet_remove
,
1180 /* .suspend = fs_enet_suspend, TODO */
1181 /* .resume = fs_enet_resume, TODO */
1185 static struct device_driver fs_enet_scc_driver
= {
1186 .name
= "fsl-cpm-scc",
1187 .bus
= &platform_bus_type
,
1188 .probe
= fs_enet_probe
,
1189 .remove
= fs_enet_remove
,
1191 /* .suspend = fs_enet_suspend, TODO */
1192 /* .resume = fs_enet_resume, TODO */
1196 static struct device_driver fs_enet_fcc_driver
= {
1197 .name
= "fsl-cpm-fcc",
1198 .bus
= &platform_bus_type
,
1199 .probe
= fs_enet_probe
,
1200 .remove
= fs_enet_remove
,
1202 /* .suspend = fs_enet_suspend, TODO */
1203 /* .resume = fs_enet_resume, TODO */
1207 static int __init
fs_init(void)
1218 #ifdef CONFIG_FS_ENET_HAS_FCC
1219 /* let's insert mii stuff */
1220 r
= fs_enet_mdio_bb_init();
1223 printk(KERN_ERR DRV_MODULE_NAME
1224 "BB PHY init failed.\n");
1227 r
= driver_register(&fs_enet_fcc_driver
);
1232 #ifdef CONFIG_FS_ENET_HAS_FEC
1233 r
= fs_enet_mdio_fec_init();
1235 printk(KERN_ERR DRV_MODULE_NAME
1236 "FEC PHY init failed.\n");
1240 r
= driver_register(&fs_enet_fec_driver
);
1245 #ifdef CONFIG_FS_ENET_HAS_SCC
1246 r
= driver_register(&fs_enet_scc_driver
);
1258 static void __exit
fs_cleanup(void)
1260 driver_unregister(&fs_enet_fec_driver
);
1261 driver_unregister(&fs_enet_fcc_driver
);
1262 driver_unregister(&fs_enet_scc_driver
);
1266 /**************************************************************************************/
1268 module_init(fs_init
);
1269 module_exit(fs_cleanup
);