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20#include <linux/init.h>
21#include <linux/module.h>
22#include <linux/clk.h>
23#include <linux/etherdevice.h>
24#include <linux/slab.h>
25#include <linux/delay.h>
26#include <linux/ethtool.h>
27#include <linux/crc32.h>
28#include <linux/err.h>
29#include <linux/dma-mapping.h>
30#include <linux/platform_device.h>
31#include <linux/if_vlan.h>
32
33#include <bcm63xx_dev_enet.h>
34#include "bcm63xx_enet.h"
35
36static char bcm_enet_driver_name[] = "bcm63xx_enet";
37static char bcm_enet_driver_version[] = "1.0";
38
39static int copybreak __read_mostly = 128;
40module_param(copybreak, int, 0);
41MODULE_PARM_DESC(copybreak, "Receive copy threshold");
42
43
44static void __iomem *bcm_enet_shared_base;
45
46
47
48
49static inline u32 enet_readl(struct bcm_enet_priv *priv, u32 off)
50{
51 return bcm_readl(priv->base + off);
52}
53
54static inline void enet_writel(struct bcm_enet_priv *priv,
55 u32 val, u32 off)
56{
57 bcm_writel(val, priv->base + off);
58}
59
60
61
62
63static inline u32 enet_dma_readl(struct bcm_enet_priv *priv, u32 off)
64{
65 return bcm_readl(bcm_enet_shared_base + off);
66}
67
68static inline void enet_dma_writel(struct bcm_enet_priv *priv,
69 u32 val, u32 off)
70{
71 bcm_writel(val, bcm_enet_shared_base + off);
72}
73
74
75
76
77
78static int do_mdio_op(struct bcm_enet_priv *priv, unsigned int data)
79{
80 int limit;
81
82
83 enet_writel(priv, ENET_IR_MII, ENET_IR_REG);
84
85 enet_writel(priv, data, ENET_MIIDATA_REG);
86 wmb();
87
88
89 limit = 1000;
90 do {
91 if (enet_readl(priv, ENET_IR_REG) & ENET_IR_MII)
92 break;
93 udelay(1);
94 } while (limit-- > 0);
95
96 return (limit < 0) ? 1 : 0;
97}
98
99
100
101
102static int bcm_enet_mdio_read(struct bcm_enet_priv *priv, int mii_id,
103 int regnum)
104{
105 u32 tmp, val;
106
107 tmp = regnum << ENET_MIIDATA_REG_SHIFT;
108 tmp |= 0x2 << ENET_MIIDATA_TA_SHIFT;
109 tmp |= mii_id << ENET_MIIDATA_PHYID_SHIFT;
110 tmp |= ENET_MIIDATA_OP_READ_MASK;
111
112 if (do_mdio_op(priv, tmp))
113 return -1;
114
115 val = enet_readl(priv, ENET_MIIDATA_REG);
116 val &= 0xffff;
117 return val;
118}
119
120
121
122
123static int bcm_enet_mdio_write(struct bcm_enet_priv *priv, int mii_id,
124 int regnum, u16 value)
125{
126 u32 tmp;
127
128 tmp = (value & 0xffff) << ENET_MIIDATA_DATA_SHIFT;
129 tmp |= 0x2 << ENET_MIIDATA_TA_SHIFT;
130 tmp |= regnum << ENET_MIIDATA_REG_SHIFT;
131 tmp |= mii_id << ENET_MIIDATA_PHYID_SHIFT;
132 tmp |= ENET_MIIDATA_OP_WRITE_MASK;
133
134 (void)do_mdio_op(priv, tmp);
135 return 0;
136}
137
138
139
140
141static int bcm_enet_mdio_read_phylib(struct mii_bus *bus, int mii_id,
142 int regnum)
143{
144 return bcm_enet_mdio_read(bus->priv, mii_id, regnum);
145}
146
147
148
149
150static int bcm_enet_mdio_write_phylib(struct mii_bus *bus, int mii_id,
151 int regnum, u16 value)
152{
153 return bcm_enet_mdio_write(bus->priv, mii_id, regnum, value);
154}
155
156
157
158
159static int bcm_enet_mdio_read_mii(struct net_device *dev, int mii_id,
160 int regnum)
161{
162 return bcm_enet_mdio_read(netdev_priv(dev), mii_id, regnum);
163}
164
165
166
167
168static void bcm_enet_mdio_write_mii(struct net_device *dev, int mii_id,
169 int regnum, int value)
170{
171 bcm_enet_mdio_write(netdev_priv(dev), mii_id, regnum, value);
172}
173
174
175
176
177static int bcm_enet_refill_rx(struct net_device *dev)
178{
179 struct bcm_enet_priv *priv;
180
181 priv = netdev_priv(dev);
182
183 while (priv->rx_desc_count < priv->rx_ring_size) {
184 struct bcm_enet_desc *desc;
185 struct sk_buff *skb;
186 dma_addr_t p;
187 int desc_idx;
188 u32 len_stat;
189
190 desc_idx = priv->rx_dirty_desc;
191 desc = &priv->rx_desc_cpu[desc_idx];
192
193 if (!priv->rx_skb[desc_idx]) {
194 skb = netdev_alloc_skb(dev, priv->rx_skb_size);
195 if (!skb)
196 break;
197 priv->rx_skb[desc_idx] = skb;
198
199 p = dma_map_single(&priv->pdev->dev, skb->data,
200 priv->rx_skb_size,
201 DMA_FROM_DEVICE);
202 desc->address = p;
203 }
204
205 len_stat = priv->rx_skb_size << DMADESC_LENGTH_SHIFT;
206 len_stat |= DMADESC_OWNER_MASK;
207 if (priv->rx_dirty_desc == priv->rx_ring_size - 1) {
208 len_stat |= DMADESC_WRAP_MASK;
209 priv->rx_dirty_desc = 0;
210 } else {
211 priv->rx_dirty_desc++;
212 }
213 wmb();
214 desc->len_stat = len_stat;
215
216 priv->rx_desc_count++;
217
218
219 enet_dma_writel(priv, 1, ENETDMA_BUFALLOC_REG(priv->rx_chan));
220 }
221
222
223
224 if (priv->rx_desc_count == 0 && netif_running(dev)) {
225 dev_warn(&priv->pdev->dev, "unable to refill rx ring\n");
226 priv->rx_timeout.expires = jiffies + HZ;
227 add_timer(&priv->rx_timeout);
228 }
229
230 return 0;
231}
232
233
234
235
236static void bcm_enet_refill_rx_timer(unsigned long data)
237{
238 struct net_device *dev;
239 struct bcm_enet_priv *priv;
240
241 dev = (struct net_device *)data;
242 priv = netdev_priv(dev);
243
244 spin_lock(&priv->rx_lock);
245 bcm_enet_refill_rx((struct net_device *)data);
246 spin_unlock(&priv->rx_lock);
247}
248
249
250
251
252static int bcm_enet_receive_queue(struct net_device *dev, int budget)
253{
254 struct bcm_enet_priv *priv;
255 struct device *kdev;
256 int processed;
257
258 priv = netdev_priv(dev);
259 kdev = &priv->pdev->dev;
260 processed = 0;
261
262
263
264 if (budget > priv->rx_desc_count)
265 budget = priv->rx_desc_count;
266
267 do {
268 struct bcm_enet_desc *desc;
269 struct sk_buff *skb;
270 int desc_idx;
271 u32 len_stat;
272 unsigned int len;
273
274 desc_idx = priv->rx_curr_desc;
275 desc = &priv->rx_desc_cpu[desc_idx];
276
277
278
279 rmb();
280
281 len_stat = desc->len_stat;
282
283
284 if (len_stat & DMADESC_OWNER_MASK)
285 break;
286
287 processed++;
288 priv->rx_curr_desc++;
289 if (priv->rx_curr_desc == priv->rx_ring_size)
290 priv->rx_curr_desc = 0;
291 priv->rx_desc_count--;
292
293
294
295 if ((len_stat & DMADESC_ESOP_MASK) != DMADESC_ESOP_MASK) {
296 dev->stats.rx_dropped++;
297 continue;
298 }
299
300
301 if (unlikely(len_stat & DMADESC_ERR_MASK)) {
302 dev->stats.rx_errors++;
303
304 if (len_stat & DMADESC_OVSIZE_MASK)
305 dev->stats.rx_length_errors++;
306 if (len_stat & DMADESC_CRC_MASK)
307 dev->stats.rx_crc_errors++;
308 if (len_stat & DMADESC_UNDER_MASK)
309 dev->stats.rx_frame_errors++;
310 if (len_stat & DMADESC_OV_MASK)
311 dev->stats.rx_fifo_errors++;
312 continue;
313 }
314
315
316 skb = priv->rx_skb[desc_idx];
317 len = (len_stat & DMADESC_LENGTH_MASK) >> DMADESC_LENGTH_SHIFT;
318
319 len -= 4;
320
321 if (len < copybreak) {
322 struct sk_buff *nskb;
323
324 nskb = netdev_alloc_skb_ip_align(dev, len);
325 if (!nskb) {
326
327 dev->stats.rx_dropped++;
328 continue;
329 }
330
331 dma_sync_single_for_cpu(kdev, desc->address,
332 len, DMA_FROM_DEVICE);
333 memcpy(nskb->data, skb->data, len);
334 dma_sync_single_for_device(kdev, desc->address,
335 len, DMA_FROM_DEVICE);
336 skb = nskb;
337 } else {
338 dma_unmap_single(&priv->pdev->dev, desc->address,
339 priv->rx_skb_size, DMA_FROM_DEVICE);
340 priv->rx_skb[desc_idx] = NULL;
341 }
342
343 skb_put(skb, len);
344 skb->protocol = eth_type_trans(skb, dev);
345 dev->stats.rx_packets++;
346 dev->stats.rx_bytes += len;
347 netif_receive_skb(skb);
348
349 } while (--budget > 0);
350
351 if (processed || !priv->rx_desc_count) {
352 bcm_enet_refill_rx(dev);
353
354
355 enet_dma_writel(priv, ENETDMA_CHANCFG_EN_MASK,
356 ENETDMA_CHANCFG_REG(priv->rx_chan));
357 }
358
359 return processed;
360}
361
362
363
364
365
366static int bcm_enet_tx_reclaim(struct net_device *dev, int force)
367{
368 struct bcm_enet_priv *priv;
369 int released;
370
371 priv = netdev_priv(dev);
372 released = 0;
373
374 while (priv->tx_desc_count < priv->tx_ring_size) {
375 struct bcm_enet_desc *desc;
376 struct sk_buff *skb;
377
378
379
380 spin_lock(&priv->tx_lock);
381
382 desc = &priv->tx_desc_cpu[priv->tx_dirty_desc];
383
384 if (!force && (desc->len_stat & DMADESC_OWNER_MASK)) {
385 spin_unlock(&priv->tx_lock);
386 break;
387 }
388
389
390
391 rmb();
392
393 skb = priv->tx_skb[priv->tx_dirty_desc];
394 priv->tx_skb[priv->tx_dirty_desc] = NULL;
395 dma_unmap_single(&priv->pdev->dev, desc->address, skb->len,
396 DMA_TO_DEVICE);
397
398 priv->tx_dirty_desc++;
399 if (priv->tx_dirty_desc == priv->tx_ring_size)
400 priv->tx_dirty_desc = 0;
401 priv->tx_desc_count++;
402
403 spin_unlock(&priv->tx_lock);
404
405 if (desc->len_stat & DMADESC_UNDER_MASK)
406 dev->stats.tx_errors++;
407
408 dev_kfree_skb(skb);
409 released++;
410 }
411
412 if (netif_queue_stopped(dev) && released)
413 netif_wake_queue(dev);
414
415 return released;
416}
417
418
419
420
421static int bcm_enet_poll(struct napi_struct *napi, int budget)
422{
423 struct bcm_enet_priv *priv;
424 struct net_device *dev;
425 int tx_work_done, rx_work_done;
426
427 priv = container_of(napi, struct bcm_enet_priv, napi);
428 dev = priv->net_dev;
429
430
431 enet_dma_writel(priv, ENETDMA_IR_PKTDONE_MASK,
432 ENETDMA_IR_REG(priv->rx_chan));
433 enet_dma_writel(priv, ENETDMA_IR_PKTDONE_MASK,
434 ENETDMA_IR_REG(priv->tx_chan));
435
436
437 tx_work_done = bcm_enet_tx_reclaim(dev, 0);
438
439 spin_lock(&priv->rx_lock);
440 rx_work_done = bcm_enet_receive_queue(dev, budget);
441 spin_unlock(&priv->rx_lock);
442
443 if (rx_work_done >= budget || tx_work_done > 0) {
444
445 return rx_work_done;
446 }
447
448
449
450 napi_complete(napi);
451
452
453 enet_dma_writel(priv, ENETDMA_IR_PKTDONE_MASK,
454 ENETDMA_IRMASK_REG(priv->rx_chan));
455 enet_dma_writel(priv, ENETDMA_IR_PKTDONE_MASK,
456 ENETDMA_IRMASK_REG(priv->tx_chan));
457
458 return rx_work_done;
459}
460
461
462
463
464static irqreturn_t bcm_enet_isr_mac(int irq, void *dev_id)
465{
466 struct net_device *dev;
467 struct bcm_enet_priv *priv;
468 u32 stat;
469
470 dev = dev_id;
471 priv = netdev_priv(dev);
472
473 stat = enet_readl(priv, ENET_IR_REG);
474 if (!(stat & ENET_IR_MIB))
475 return IRQ_NONE;
476
477
478 enet_writel(priv, ENET_IR_MIB, ENET_IR_REG);
479 enet_writel(priv, 0, ENET_IRMASK_REG);
480
481
482 schedule_work(&priv->mib_update_task);
483
484 return IRQ_HANDLED;
485}
486
487
488
489
490static irqreturn_t bcm_enet_isr_dma(int irq, void *dev_id)
491{
492 struct net_device *dev;
493 struct bcm_enet_priv *priv;
494
495 dev = dev_id;
496 priv = netdev_priv(dev);
497
498
499 enet_dma_writel(priv, 0, ENETDMA_IRMASK_REG(priv->rx_chan));
500 enet_dma_writel(priv, 0, ENETDMA_IRMASK_REG(priv->tx_chan));
501
502 napi_schedule(&priv->napi);
503
504 return IRQ_HANDLED;
505}
506
507
508
509
510static int bcm_enet_start_xmit(struct sk_buff *skb, struct net_device *dev)
511{
512 struct bcm_enet_priv *priv;
513 struct bcm_enet_desc *desc;
514 u32 len_stat;
515 int ret;
516
517 priv = netdev_priv(dev);
518
519
520 spin_lock(&priv->tx_lock);
521
522
523
524 if (unlikely(!priv->tx_desc_count)) {
525 netif_stop_queue(dev);
526 dev_err(&priv->pdev->dev, "xmit called with no tx desc "
527 "available?\n");
528 ret = NETDEV_TX_BUSY;
529 goto out_unlock;
530 }
531
532
533 desc = &priv->tx_desc_cpu[priv->tx_curr_desc];
534 priv->tx_skb[priv->tx_curr_desc] = skb;
535
536
537 desc->address = dma_map_single(&priv->pdev->dev, skb->data, skb->len,
538 DMA_TO_DEVICE);
539
540 len_stat = (skb->len << DMADESC_LENGTH_SHIFT) & DMADESC_LENGTH_MASK;
541 len_stat |= DMADESC_ESOP_MASK |
542 DMADESC_APPEND_CRC |
543 DMADESC_OWNER_MASK;
544
545 priv->tx_curr_desc++;
546 if (priv->tx_curr_desc == priv->tx_ring_size) {
547 priv->tx_curr_desc = 0;
548 len_stat |= DMADESC_WRAP_MASK;
549 }
550 priv->tx_desc_count--;
551
552
553
554 wmb();
555 desc->len_stat = len_stat;
556 wmb();
557
558
559 enet_dma_writel(priv, ENETDMA_CHANCFG_EN_MASK,
560 ENETDMA_CHANCFG_REG(priv->tx_chan));
561
562
563 if (!priv->tx_desc_count)
564 netif_stop_queue(dev);
565
566 dev->stats.tx_bytes += skb->len;
567 dev->stats.tx_packets++;
568 ret = NETDEV_TX_OK;
569
570out_unlock:
571 spin_unlock(&priv->tx_lock);
572 return ret;
573}
574
575
576
577
578static int bcm_enet_set_mac_address(struct net_device *dev, void *p)
579{
580 struct bcm_enet_priv *priv;
581 struct sockaddr *addr = p;
582 u32 val;
583
584 priv = netdev_priv(dev);
585 memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
586
587
588 val = (dev->dev_addr[2] << 24) | (dev->dev_addr[3] << 16) |
589 (dev->dev_addr[4] << 8) | dev->dev_addr[5];
590 enet_writel(priv, val, ENET_PML_REG(0));
591
592 val = (dev->dev_addr[0] << 8 | dev->dev_addr[1]);
593 val |= ENET_PMH_DATAVALID_MASK;
594 enet_writel(priv, val, ENET_PMH_REG(0));
595
596 return 0;
597}
598
599
600
601
602static void bcm_enet_set_multicast_list(struct net_device *dev)
603{
604 struct bcm_enet_priv *priv;
605 struct netdev_hw_addr *ha;
606 u32 val;
607 int i;
608
609 priv = netdev_priv(dev);
610
611 val = enet_readl(priv, ENET_RXCFG_REG);
612
613 if (dev->flags & IFF_PROMISC)
614 val |= ENET_RXCFG_PROMISC_MASK;
615 else
616 val &= ~ENET_RXCFG_PROMISC_MASK;
617
618
619
620 if ((dev->flags & IFF_ALLMULTI) || netdev_mc_count(dev) > 3)
621 val |= ENET_RXCFG_ALLMCAST_MASK;
622 else
623 val &= ~ENET_RXCFG_ALLMCAST_MASK;
624
625
626
627 if (val & ENET_RXCFG_ALLMCAST_MASK) {
628 enet_writel(priv, val, ENET_RXCFG_REG);
629 return;
630 }
631
632 i = 0;
633 netdev_for_each_mc_addr(ha, dev) {
634 u8 *dmi_addr;
635 u32 tmp;
636
637 if (i == 3)
638 break;
639
640 dmi_addr = ha->addr;
641 tmp = (dmi_addr[2] << 24) | (dmi_addr[3] << 16) |
642 (dmi_addr[4] << 8) | dmi_addr[5];
643 enet_writel(priv, tmp, ENET_PML_REG(i + 1));
644
645 tmp = (dmi_addr[0] << 8 | dmi_addr[1]);
646 tmp |= ENET_PMH_DATAVALID_MASK;
647 enet_writel(priv, tmp, ENET_PMH_REG(i++ + 1));
648 }
649
650 for (; i < 3; i++) {
651 enet_writel(priv, 0, ENET_PML_REG(i + 1));
652 enet_writel(priv, 0, ENET_PMH_REG(i + 1));
653 }
654
655 enet_writel(priv, val, ENET_RXCFG_REG);
656}
657
658
659
660
661static void bcm_enet_set_duplex(struct bcm_enet_priv *priv, int fullduplex)
662{
663 u32 val;
664
665 val = enet_readl(priv, ENET_TXCTL_REG);
666 if (fullduplex)
667 val |= ENET_TXCTL_FD_MASK;
668 else
669 val &= ~ENET_TXCTL_FD_MASK;
670 enet_writel(priv, val, ENET_TXCTL_REG);
671}
672
673
674
675
676static void bcm_enet_set_flow(struct bcm_enet_priv *priv, int rx_en, int tx_en)
677{
678 u32 val;
679
680
681 val = enet_readl(priv, ENET_RXCFG_REG);
682 if (rx_en)
683 val |= ENET_RXCFG_ENFLOW_MASK;
684 else
685 val &= ~ENET_RXCFG_ENFLOW_MASK;
686 enet_writel(priv, val, ENET_RXCFG_REG);
687
688
689 val = enet_dma_readl(priv, ENETDMA_CFG_REG);
690 if (tx_en)
691 val |= ENETDMA_CFG_FLOWCH_MASK(priv->rx_chan);
692 else
693 val &= ~ENETDMA_CFG_FLOWCH_MASK(priv->rx_chan);
694 enet_dma_writel(priv, val, ENETDMA_CFG_REG);
695}
696
697
698
699
700static void bcm_enet_adjust_phy_link(struct net_device *dev)
701{
702 struct bcm_enet_priv *priv;
703 struct phy_device *phydev;
704 int status_changed;
705
706 priv = netdev_priv(dev);
707 phydev = priv->phydev;
708 status_changed = 0;
709
710 if (priv->old_link != phydev->link) {
711 status_changed = 1;
712 priv->old_link = phydev->link;
713 }
714
715
716 if (phydev->link && phydev->duplex != priv->old_duplex) {
717 bcm_enet_set_duplex(priv,
718 (phydev->duplex == DUPLEX_FULL) ? 1 : 0);
719 status_changed = 1;
720 priv->old_duplex = phydev->duplex;
721 }
722
723
724
725 if (phydev->link && phydev->pause != priv->old_pause) {
726 int rx_pause_en, tx_pause_en;
727
728 if (phydev->pause) {
729
730 rx_pause_en = 1;
731 tx_pause_en = 1;
732 } else if (!priv->pause_auto) {
733
734 rx_pause_en = priv->pause_rx;
735 tx_pause_en = priv->pause_tx;
736 } else {
737 rx_pause_en = 0;
738 tx_pause_en = 0;
739 }
740
741 bcm_enet_set_flow(priv, rx_pause_en, tx_pause_en);
742 status_changed = 1;
743 priv->old_pause = phydev->pause;
744 }
745
746 if (status_changed) {
747 pr_info("%s: link %s", dev->name, phydev->link ?
748 "UP" : "DOWN");
749 if (phydev->link)
750 pr_cont(" - %d/%s - flow control %s", phydev->speed,
751 DUPLEX_FULL == phydev->duplex ? "full" : "half",
752 phydev->pause == 1 ? "rx&tx" : "off");
753
754 pr_cont("\n");
755 }
756}
757
758
759
760
761static void bcm_enet_adjust_link(struct net_device *dev)
762{
763 struct bcm_enet_priv *priv;
764
765 priv = netdev_priv(dev);
766 bcm_enet_set_duplex(priv, priv->force_duplex_full);
767 bcm_enet_set_flow(priv, priv->pause_rx, priv->pause_tx);
768 netif_carrier_on(dev);
769
770 pr_info("%s: link forced UP - %d/%s - flow control %s/%s\n",
771 dev->name,
772 priv->force_speed_100 ? 100 : 10,
773 priv->force_duplex_full ? "full" : "half",
774 priv->pause_rx ? "rx" : "off",
775 priv->pause_tx ? "tx" : "off");
776}
777
778
779
780
781static int bcm_enet_open(struct net_device *dev)
782{
783 struct bcm_enet_priv *priv;
784 struct sockaddr addr;
785 struct device *kdev;
786 struct phy_device *phydev;
787 int i, ret;
788 unsigned int size;
789 char phy_id[MII_BUS_ID_SIZE + 3];
790 void *p;
791 u32 val;
792
793 priv = netdev_priv(dev);
794 kdev = &priv->pdev->dev;
795
796 if (priv->has_phy) {
797
798 snprintf(phy_id, sizeof(phy_id), PHY_ID_FMT,
799 priv->mac_id ? "1" : "0", priv->phy_id);
800
801 phydev = phy_connect(dev, phy_id, bcm_enet_adjust_phy_link, 0,
802 PHY_INTERFACE_MODE_MII);
803
804 if (IS_ERR(phydev)) {
805 dev_err(kdev, "could not attach to PHY\n");
806 return PTR_ERR(phydev);
807 }
808
809
810 phydev->supported &= (SUPPORTED_10baseT_Half |
811 SUPPORTED_10baseT_Full |
812 SUPPORTED_100baseT_Half |
813 SUPPORTED_100baseT_Full |
814 SUPPORTED_Autoneg |
815 SUPPORTED_Pause |
816 SUPPORTED_MII);
817 phydev->advertising = phydev->supported;
818
819 if (priv->pause_auto && priv->pause_rx && priv->pause_tx)
820 phydev->advertising |= SUPPORTED_Pause;
821 else
822 phydev->advertising &= ~SUPPORTED_Pause;
823
824 dev_info(kdev, "attached PHY at address %d [%s]\n",
825 phydev->addr, phydev->drv->name);
826
827 priv->old_link = 0;
828 priv->old_duplex = -1;
829 priv->old_pause = -1;
830 priv->phydev = phydev;
831 }
832
833
834 enet_writel(priv, 0, ENET_IRMASK_REG);
835 enet_dma_writel(priv, 0, ENETDMA_IRMASK_REG(priv->rx_chan));
836 enet_dma_writel(priv, 0, ENETDMA_IRMASK_REG(priv->tx_chan));
837
838 ret = request_irq(dev->irq, bcm_enet_isr_mac, 0, dev->name, dev);
839 if (ret)
840 goto out_phy_disconnect;
841
842 ret = request_irq(priv->irq_rx, bcm_enet_isr_dma,
843 IRQF_SAMPLE_RANDOM | IRQF_DISABLED, dev->name, dev);
844 if (ret)
845 goto out_freeirq;
846
847 ret = request_irq(priv->irq_tx, bcm_enet_isr_dma,
848 IRQF_DISABLED, dev->name, dev);
849 if (ret)
850 goto out_freeirq_rx;
851
852
853 for (i = 0; i < 4; i++) {
854 enet_writel(priv, 0, ENET_PML_REG(i));
855 enet_writel(priv, 0, ENET_PMH_REG(i));
856 }
857
858
859 memcpy(addr.sa_data, dev->dev_addr, ETH_ALEN);
860 bcm_enet_set_mac_address(dev, &addr);
861
862
863 size = priv->rx_ring_size * sizeof(struct bcm_enet_desc);
864 p = dma_alloc_coherent(kdev, size, &priv->rx_desc_dma, GFP_KERNEL);
865 if (!p) {
866 dev_err(kdev, "cannot allocate rx ring %u\n", size);
867 ret = -ENOMEM;
868 goto out_freeirq_tx;
869 }
870
871 memset(p, 0, size);
872 priv->rx_desc_alloc_size = size;
873 priv->rx_desc_cpu = p;
874
875
876 size = priv->tx_ring_size * sizeof(struct bcm_enet_desc);
877 p = dma_alloc_coherent(kdev, size, &priv->tx_desc_dma, GFP_KERNEL);
878 if (!p) {
879 dev_err(kdev, "cannot allocate tx ring\n");
880 ret = -ENOMEM;
881 goto out_free_rx_ring;
882 }
883
884 memset(p, 0, size);
885 priv->tx_desc_alloc_size = size;
886 priv->tx_desc_cpu = p;
887
888 priv->tx_skb = kzalloc(sizeof(struct sk_buff *) * priv->tx_ring_size,
889 GFP_KERNEL);
890 if (!priv->tx_skb) {
891 dev_err(kdev, "cannot allocate rx skb queue\n");
892 ret = -ENOMEM;
893 goto out_free_tx_ring;
894 }
895
896 priv->tx_desc_count = priv->tx_ring_size;
897 priv->tx_dirty_desc = 0;
898 priv->tx_curr_desc = 0;
899 spin_lock_init(&priv->tx_lock);
900
901
902 priv->rx_skb = kzalloc(sizeof(struct sk_buff *) * priv->rx_ring_size,
903 GFP_KERNEL);
904 if (!priv->rx_skb) {
905 dev_err(kdev, "cannot allocate rx skb queue\n");
906 ret = -ENOMEM;
907 goto out_free_tx_skb;
908 }
909
910 priv->rx_desc_count = 0;
911 priv->rx_dirty_desc = 0;
912 priv->rx_curr_desc = 0;
913
914
915 enet_dma_writel(priv, ENETDMA_BUFALLOC_FORCE_MASK | 0,
916 ENETDMA_BUFALLOC_REG(priv->rx_chan));
917
918 if (bcm_enet_refill_rx(dev)) {
919 dev_err(kdev, "cannot allocate rx skb queue\n");
920 ret = -ENOMEM;
921 goto out;
922 }
923
924
925 enet_dma_writel(priv, priv->rx_desc_dma,
926 ENETDMA_RSTART_REG(priv->rx_chan));
927 enet_dma_writel(priv, priv->tx_desc_dma,
928 ENETDMA_RSTART_REG(priv->tx_chan));
929
930
931 enet_dma_writel(priv, 0, ENETDMA_SRAM2_REG(priv->rx_chan));
932 enet_dma_writel(priv, 0, ENETDMA_SRAM2_REG(priv->tx_chan));
933 enet_dma_writel(priv, 0, ENETDMA_SRAM3_REG(priv->rx_chan));
934 enet_dma_writel(priv, 0, ENETDMA_SRAM3_REG(priv->tx_chan));
935 enet_dma_writel(priv, 0, ENETDMA_SRAM4_REG(priv->rx_chan));
936 enet_dma_writel(priv, 0, ENETDMA_SRAM4_REG(priv->tx_chan));
937
938
939 enet_writel(priv, priv->hw_mtu, ENET_RXMAXLEN_REG);
940 enet_writel(priv, priv->hw_mtu, ENET_TXMAXLEN_REG);
941
942
943 enet_dma_writel(priv, BCMENET_DMA_MAXBURST,
944 ENETDMA_MAXBURST_REG(priv->rx_chan));
945 enet_dma_writel(priv, BCMENET_DMA_MAXBURST,
946 ENETDMA_MAXBURST_REG(priv->tx_chan));
947
948
949 enet_writel(priv, BCMENET_TX_FIFO_TRESH, ENET_TXWMARK_REG);
950
951
952 val = priv->rx_ring_size / 3;
953 enet_dma_writel(priv, val, ENETDMA_FLOWCL_REG(priv->rx_chan));
954 val = (priv->rx_ring_size * 2) / 3;
955 enet_dma_writel(priv, val, ENETDMA_FLOWCH_REG(priv->rx_chan));
956
957
958
959 wmb();
960 val = enet_readl(priv, ENET_CTL_REG);
961 val |= ENET_CTL_ENABLE_MASK;
962 enet_writel(priv, val, ENET_CTL_REG);
963 enet_dma_writel(priv, ENETDMA_CFG_EN_MASK, ENETDMA_CFG_REG);
964 enet_dma_writel(priv, ENETDMA_CHANCFG_EN_MASK,
965 ENETDMA_CHANCFG_REG(priv->rx_chan));
966
967
968 enet_writel(priv, ENET_IR_MIB, ENET_IR_REG);
969 enet_writel(priv, ENET_IR_MIB, ENET_IRMASK_REG);
970
971
972 enet_dma_writel(priv, ENETDMA_IR_PKTDONE_MASK,
973 ENETDMA_IR_REG(priv->rx_chan));
974 enet_dma_writel(priv, ENETDMA_IR_PKTDONE_MASK,
975 ENETDMA_IR_REG(priv->tx_chan));
976
977
978 napi_enable(&priv->napi);
979
980 enet_dma_writel(priv, ENETDMA_IR_PKTDONE_MASK,
981 ENETDMA_IRMASK_REG(priv->rx_chan));
982 enet_dma_writel(priv, ENETDMA_IR_PKTDONE_MASK,
983 ENETDMA_IRMASK_REG(priv->tx_chan));
984
985 if (priv->has_phy)
986 phy_start(priv->phydev);
987 else
988 bcm_enet_adjust_link(dev);
989
990 netif_start_queue(dev);
991 return 0;
992
993out:
994 for (i = 0; i < priv->rx_ring_size; i++) {
995 struct bcm_enet_desc *desc;
996
997 if (!priv->rx_skb[i])
998 continue;
999
1000 desc = &priv->rx_desc_cpu[i];
1001 dma_unmap_single(kdev, desc->address, priv->rx_skb_size,
1002 DMA_FROM_DEVICE);
1003 kfree_skb(priv->rx_skb[i]);
1004 }
1005 kfree(priv->rx_skb);
1006
1007out_free_tx_skb:
1008 kfree(priv->tx_skb);
1009
1010out_free_tx_ring:
1011 dma_free_coherent(kdev, priv->tx_desc_alloc_size,
1012 priv->tx_desc_cpu, priv->tx_desc_dma);
1013
1014out_free_rx_ring:
1015 dma_free_coherent(kdev, priv->rx_desc_alloc_size,
1016 priv->rx_desc_cpu, priv->rx_desc_dma);
1017
1018out_freeirq_tx:
1019 free_irq(priv->irq_tx, dev);
1020
1021out_freeirq_rx:
1022 free_irq(priv->irq_rx, dev);
1023
1024out_freeirq:
1025 free_irq(dev->irq, dev);
1026
1027out_phy_disconnect:
1028 phy_disconnect(priv->phydev);
1029
1030 return ret;
1031}
1032
1033
1034
1035
1036static void bcm_enet_disable_mac(struct bcm_enet_priv *priv)
1037{
1038 int limit;
1039 u32 val;
1040
1041 val = enet_readl(priv, ENET_CTL_REG);
1042 val |= ENET_CTL_DISABLE_MASK;
1043 enet_writel(priv, val, ENET_CTL_REG);
1044
1045 limit = 1000;
1046 do {
1047 u32 val;
1048
1049 val = enet_readl(priv, ENET_CTL_REG);
1050 if (!(val & ENET_CTL_DISABLE_MASK))
1051 break;
1052 udelay(1);
1053 } while (limit--);
1054}
1055
1056
1057
1058
1059static void bcm_enet_disable_dma(struct bcm_enet_priv *priv, int chan)
1060{
1061 int limit;
1062
1063 enet_dma_writel(priv, 0, ENETDMA_CHANCFG_REG(chan));
1064
1065 limit = 1000;
1066 do {
1067 u32 val;
1068
1069 val = enet_dma_readl(priv, ENETDMA_CHANCFG_REG(chan));
1070 if (!(val & ENETDMA_CHANCFG_EN_MASK))
1071 break;
1072 udelay(1);
1073 } while (limit--);
1074}
1075
1076
1077
1078
1079static int bcm_enet_stop(struct net_device *dev)
1080{
1081 struct bcm_enet_priv *priv;
1082 struct device *kdev;
1083 int i;
1084
1085 priv = netdev_priv(dev);
1086 kdev = &priv->pdev->dev;
1087
1088 netif_stop_queue(dev);
1089 napi_disable(&priv->napi);
1090 if (priv->has_phy)
1091 phy_stop(priv->phydev);
1092 del_timer_sync(&priv->rx_timeout);
1093
1094
1095 enet_writel(priv, 0, ENET_IRMASK_REG);
1096 enet_dma_writel(priv, 0, ENETDMA_IRMASK_REG(priv->rx_chan));
1097 enet_dma_writel(priv, 0, ENETDMA_IRMASK_REG(priv->tx_chan));
1098
1099
1100 cancel_work_sync(&priv->mib_update_task);
1101
1102
1103 bcm_enet_disable_dma(priv, priv->tx_chan);
1104 bcm_enet_disable_dma(priv, priv->rx_chan);
1105 bcm_enet_disable_mac(priv);
1106
1107
1108 bcm_enet_tx_reclaim(dev, 1);
1109
1110
1111 for (i = 0; i < priv->rx_ring_size; i++) {
1112 struct bcm_enet_desc *desc;
1113
1114 if (!priv->rx_skb[i])
1115 continue;
1116
1117 desc = &priv->rx_desc_cpu[i];
1118 dma_unmap_single(kdev, desc->address, priv->rx_skb_size,
1119 DMA_FROM_DEVICE);
1120 kfree_skb(priv->rx_skb[i]);
1121 }
1122
1123
1124 kfree(priv->rx_skb);
1125 kfree(priv->tx_skb);
1126 dma_free_coherent(kdev, priv->rx_desc_alloc_size,
1127 priv->rx_desc_cpu, priv->rx_desc_dma);
1128 dma_free_coherent(kdev, priv->tx_desc_alloc_size,
1129 priv->tx_desc_cpu, priv->tx_desc_dma);
1130 free_irq(priv->irq_tx, dev);
1131 free_irq(priv->irq_rx, dev);
1132 free_irq(dev->irq, dev);
1133
1134
1135 if (priv->has_phy) {
1136 phy_disconnect(priv->phydev);
1137 priv->phydev = NULL;
1138 }
1139
1140 return 0;
1141}
1142
1143
1144
1145
1146struct bcm_enet_stats {
1147 char stat_string[ETH_GSTRING_LEN];
1148 int sizeof_stat;
1149 int stat_offset;
1150 int mib_reg;
1151};
1152
1153#define GEN_STAT(m) sizeof(((struct bcm_enet_priv *)0)->m), \
1154 offsetof(struct bcm_enet_priv, m)
1155#define DEV_STAT(m) sizeof(((struct net_device_stats *)0)->m), \
1156 offsetof(struct net_device_stats, m)
1157
1158static const struct bcm_enet_stats bcm_enet_gstrings_stats[] = {
1159 { "rx_packets", DEV_STAT(rx_packets), -1 },
1160 { "tx_packets", DEV_STAT(tx_packets), -1 },
1161 { "rx_bytes", DEV_STAT(rx_bytes), -1 },
1162 { "tx_bytes", DEV_STAT(tx_bytes), -1 },
1163 { "rx_errors", DEV_STAT(rx_errors), -1 },
1164 { "tx_errors", DEV_STAT(tx_errors), -1 },
1165 { "rx_dropped", DEV_STAT(rx_dropped), -1 },
1166 { "tx_dropped", DEV_STAT(tx_dropped), -1 },
1167
1168 { "rx_good_octets", GEN_STAT(mib.rx_gd_octets), ETH_MIB_RX_GD_OCTETS},
1169 { "rx_good_pkts", GEN_STAT(mib.rx_gd_pkts), ETH_MIB_RX_GD_PKTS },
1170 { "rx_broadcast", GEN_STAT(mib.rx_brdcast), ETH_MIB_RX_BRDCAST },
1171 { "rx_multicast", GEN_STAT(mib.rx_mult), ETH_MIB_RX_MULT },
1172 { "rx_64_octets", GEN_STAT(mib.rx_64), ETH_MIB_RX_64 },
1173 { "rx_65_127_oct", GEN_STAT(mib.rx_65_127), ETH_MIB_RX_65_127 },
1174 { "rx_128_255_oct", GEN_STAT(mib.rx_128_255), ETH_MIB_RX_128_255 },
1175 { "rx_256_511_oct", GEN_STAT(mib.rx_256_511), ETH_MIB_RX_256_511 },
1176 { "rx_512_1023_oct", GEN_STAT(mib.rx_512_1023), ETH_MIB_RX_512_1023 },
1177 { "rx_1024_max_oct", GEN_STAT(mib.rx_1024_max), ETH_MIB_RX_1024_MAX },
1178 { "rx_jabber", GEN_STAT(mib.rx_jab), ETH_MIB_RX_JAB },
1179 { "rx_oversize", GEN_STAT(mib.rx_ovr), ETH_MIB_RX_OVR },
1180 { "rx_fragment", GEN_STAT(mib.rx_frag), ETH_MIB_RX_FRAG },
1181 { "rx_dropped", GEN_STAT(mib.rx_drop), ETH_MIB_RX_DROP },
1182 { "rx_crc_align", GEN_STAT(mib.rx_crc_align), ETH_MIB_RX_CRC_ALIGN },
1183 { "rx_undersize", GEN_STAT(mib.rx_und), ETH_MIB_RX_UND },
1184 { "rx_crc", GEN_STAT(mib.rx_crc), ETH_MIB_RX_CRC },
1185 { "rx_align", GEN_STAT(mib.rx_align), ETH_MIB_RX_ALIGN },
1186 { "rx_symbol_error", GEN_STAT(mib.rx_sym), ETH_MIB_RX_SYM },
1187 { "rx_pause", GEN_STAT(mib.rx_pause), ETH_MIB_RX_PAUSE },
1188 { "rx_control", GEN_STAT(mib.rx_cntrl), ETH_MIB_RX_CNTRL },
1189
1190 { "tx_good_octets", GEN_STAT(mib.tx_gd_octets), ETH_MIB_TX_GD_OCTETS },
1191 { "tx_good_pkts", GEN_STAT(mib.tx_gd_pkts), ETH_MIB_TX_GD_PKTS },
1192 { "tx_broadcast", GEN_STAT(mib.tx_brdcast), ETH_MIB_TX_BRDCAST },
1193 { "tx_multicast", GEN_STAT(mib.tx_mult), ETH_MIB_TX_MULT },
1194 { "tx_64_oct", GEN_STAT(mib.tx_64), ETH_MIB_TX_64 },
1195 { "tx_65_127_oct", GEN_STAT(mib.tx_65_127), ETH_MIB_TX_65_127 },
1196 { "tx_128_255_oct", GEN_STAT(mib.tx_128_255), ETH_MIB_TX_128_255 },
1197 { "tx_256_511_oct", GEN_STAT(mib.tx_256_511), ETH_MIB_TX_256_511 },
1198 { "tx_512_1023_oct", GEN_STAT(mib.tx_512_1023), ETH_MIB_TX_512_1023},
1199 { "tx_1024_max_oct", GEN_STAT(mib.tx_1024_max), ETH_MIB_TX_1024_MAX },
1200 { "tx_jabber", GEN_STAT(mib.tx_jab), ETH_MIB_TX_JAB },
1201 { "tx_oversize", GEN_STAT(mib.tx_ovr), ETH_MIB_TX_OVR },
1202 { "tx_fragment", GEN_STAT(mib.tx_frag), ETH_MIB_TX_FRAG },
1203 { "tx_underrun", GEN_STAT(mib.tx_underrun), ETH_MIB_TX_UNDERRUN },
1204 { "tx_collisions", GEN_STAT(mib.tx_col), ETH_MIB_TX_COL },
1205 { "tx_single_collision", GEN_STAT(mib.tx_1_col), ETH_MIB_TX_1_COL },
1206 { "tx_multiple_collision", GEN_STAT(mib.tx_m_col), ETH_MIB_TX_M_COL },
1207 { "tx_excess_collision", GEN_STAT(mib.tx_ex_col), ETH_MIB_TX_EX_COL },
1208 { "tx_late_collision", GEN_STAT(mib.tx_late), ETH_MIB_TX_LATE },
1209 { "tx_deferred", GEN_STAT(mib.tx_def), ETH_MIB_TX_DEF },
1210 { "tx_carrier_sense", GEN_STAT(mib.tx_crs), ETH_MIB_TX_CRS },
1211 { "tx_pause", GEN_STAT(mib.tx_pause), ETH_MIB_TX_PAUSE },
1212
1213};
1214
1215#define BCM_ENET_STATS_LEN \
1216 (sizeof(bcm_enet_gstrings_stats) / sizeof(struct bcm_enet_stats))
1217
1218static const u32 unused_mib_regs[] = {
1219 ETH_MIB_TX_ALL_OCTETS,
1220 ETH_MIB_TX_ALL_PKTS,
1221 ETH_MIB_RX_ALL_OCTETS,
1222 ETH_MIB_RX_ALL_PKTS,
1223};
1224
1225
1226static void bcm_enet_get_drvinfo(struct net_device *netdev,
1227 struct ethtool_drvinfo *drvinfo)
1228{
1229 strncpy(drvinfo->driver, bcm_enet_driver_name, 32);
1230 strncpy(drvinfo->version, bcm_enet_driver_version, 32);
1231 strncpy(drvinfo->fw_version, "N/A", 32);
1232 strncpy(drvinfo->bus_info, "bcm63xx", 32);
1233 drvinfo->n_stats = BCM_ENET_STATS_LEN;
1234}
1235
1236static int bcm_enet_get_sset_count(struct net_device *netdev,
1237 int string_set)
1238{
1239 switch (string_set) {
1240 case ETH_SS_STATS:
1241 return BCM_ENET_STATS_LEN;
1242 default:
1243 return -EINVAL;
1244 }
1245}
1246
1247static void bcm_enet_get_strings(struct net_device *netdev,
1248 u32 stringset, u8 *data)
1249{
1250 int i;
1251
1252 switch (stringset) {
1253 case ETH_SS_STATS:
1254 for (i = 0; i < BCM_ENET_STATS_LEN; i++) {
1255 memcpy(data + i * ETH_GSTRING_LEN,
1256 bcm_enet_gstrings_stats[i].stat_string,
1257 ETH_GSTRING_LEN);
1258 }
1259 break;
1260 }
1261}
1262
1263static void update_mib_counters(struct bcm_enet_priv *priv)
1264{
1265 int i;
1266
1267 for (i = 0; i < BCM_ENET_STATS_LEN; i++) {
1268 const struct bcm_enet_stats *s;
1269 u32 val;
1270 char *p;
1271
1272 s = &bcm_enet_gstrings_stats[i];
1273 if (s->mib_reg == -1)
1274 continue;
1275
1276 val = enet_readl(priv, ENET_MIB_REG(s->mib_reg));
1277 p = (char *)priv + s->stat_offset;
1278
1279 if (s->sizeof_stat == sizeof(u64))
1280 *(u64 *)p += val;
1281 else
1282 *(u32 *)p += val;
1283 }
1284
1285
1286
1287 for (i = 0; i < ARRAY_SIZE(unused_mib_regs); i++)
1288 (void)enet_readl(priv, ENET_MIB_REG(unused_mib_regs[i]));
1289}
1290
1291static void bcm_enet_update_mib_counters_defer(struct work_struct *t)
1292{
1293 struct bcm_enet_priv *priv;
1294
1295 priv = container_of(t, struct bcm_enet_priv, mib_update_task);
1296 mutex_lock(&priv->mib_update_lock);
1297 update_mib_counters(priv);
1298 mutex_unlock(&priv->mib_update_lock);
1299
1300
1301 if (netif_running(priv->net_dev))
1302 enet_writel(priv, ENET_IR_MIB, ENET_IRMASK_REG);
1303}
1304
1305static void bcm_enet_get_ethtool_stats(struct net_device *netdev,
1306 struct ethtool_stats *stats,
1307 u64 *data)
1308{
1309 struct bcm_enet_priv *priv;
1310 int i;
1311
1312 priv = netdev_priv(netdev);
1313
1314 mutex_lock(&priv->mib_update_lock);
1315 update_mib_counters(priv);
1316
1317 for (i = 0; i < BCM_ENET_STATS_LEN; i++) {
1318 const struct bcm_enet_stats *s;
1319 char *p;
1320
1321 s = &bcm_enet_gstrings_stats[i];
1322 if (s->mib_reg == -1)
1323 p = (char *)&netdev->stats;
1324 else
1325 p = (char *)priv;
1326 p += s->stat_offset;
1327 data[i] = (s->sizeof_stat == sizeof(u64)) ?
1328 *(u64 *)p : *(u32 *)p;
1329 }
1330 mutex_unlock(&priv->mib_update_lock);
1331}
1332
1333static int bcm_enet_get_settings(struct net_device *dev,
1334 struct ethtool_cmd *cmd)
1335{
1336 struct bcm_enet_priv *priv;
1337
1338 priv = netdev_priv(dev);
1339
1340 cmd->maxrxpkt = 0;
1341 cmd->maxtxpkt = 0;
1342
1343 if (priv->has_phy) {
1344 if (!priv->phydev)
1345 return -ENODEV;
1346 return phy_ethtool_gset(priv->phydev, cmd);
1347 } else {
1348 cmd->autoneg = 0;
1349 cmd->speed = (priv->force_speed_100) ? SPEED_100 : SPEED_10;
1350 cmd->duplex = (priv->force_duplex_full) ?
1351 DUPLEX_FULL : DUPLEX_HALF;
1352 cmd->supported = ADVERTISED_10baseT_Half |
1353 ADVERTISED_10baseT_Full |
1354 ADVERTISED_100baseT_Half |
1355 ADVERTISED_100baseT_Full;
1356 cmd->advertising = 0;
1357 cmd->port = PORT_MII;
1358 cmd->transceiver = XCVR_EXTERNAL;
1359 }
1360 return 0;
1361}
1362
1363static int bcm_enet_set_settings(struct net_device *dev,
1364 struct ethtool_cmd *cmd)
1365{
1366 struct bcm_enet_priv *priv;
1367
1368 priv = netdev_priv(dev);
1369 if (priv->has_phy) {
1370 if (!priv->phydev)
1371 return -ENODEV;
1372 return phy_ethtool_sset(priv->phydev, cmd);
1373 } else {
1374
1375 if (cmd->autoneg ||
1376 (cmd->speed != SPEED_100 && cmd->speed != SPEED_10) ||
1377 cmd->port != PORT_MII)
1378 return -EINVAL;
1379
1380 priv->force_speed_100 = (cmd->speed == SPEED_100) ? 1 : 0;
1381 priv->force_duplex_full = (cmd->duplex == DUPLEX_FULL) ? 1 : 0;
1382
1383 if (netif_running(dev))
1384 bcm_enet_adjust_link(dev);
1385 return 0;
1386 }
1387}
1388
1389static void bcm_enet_get_ringparam(struct net_device *dev,
1390 struct ethtool_ringparam *ering)
1391{
1392 struct bcm_enet_priv *priv;
1393
1394 priv = netdev_priv(dev);
1395
1396
1397 ering->rx_max_pending = 8192;
1398 ering->tx_max_pending = 8192;
1399 ering->rx_mini_max_pending = 0;
1400 ering->rx_jumbo_max_pending = 0;
1401 ering->rx_pending = priv->rx_ring_size;
1402 ering->tx_pending = priv->tx_ring_size;
1403}
1404
1405static int bcm_enet_set_ringparam(struct net_device *dev,
1406 struct ethtool_ringparam *ering)
1407{
1408 struct bcm_enet_priv *priv;
1409 int was_running;
1410
1411 priv = netdev_priv(dev);
1412
1413 was_running = 0;
1414 if (netif_running(dev)) {
1415 bcm_enet_stop(dev);
1416 was_running = 1;
1417 }
1418
1419 priv->rx_ring_size = ering->rx_pending;
1420 priv->tx_ring_size = ering->tx_pending;
1421
1422 if (was_running) {
1423 int err;
1424
1425 err = bcm_enet_open(dev);
1426 if (err)
1427 dev_close(dev);
1428 else
1429 bcm_enet_set_multicast_list(dev);
1430 }
1431 return 0;
1432}
1433
1434static void bcm_enet_get_pauseparam(struct net_device *dev,
1435 struct ethtool_pauseparam *ecmd)
1436{
1437 struct bcm_enet_priv *priv;
1438
1439 priv = netdev_priv(dev);
1440 ecmd->autoneg = priv->pause_auto;
1441 ecmd->rx_pause = priv->pause_rx;
1442 ecmd->tx_pause = priv->pause_tx;
1443}
1444
1445static int bcm_enet_set_pauseparam(struct net_device *dev,
1446 struct ethtool_pauseparam *ecmd)
1447{
1448 struct bcm_enet_priv *priv;
1449
1450 priv = netdev_priv(dev);
1451
1452 if (priv->has_phy) {
1453 if (ecmd->autoneg && (ecmd->rx_pause != ecmd->tx_pause)) {
1454
1455
1456
1457 return -EINVAL;
1458 }
1459 } else {
1460
1461 if (ecmd->autoneg)
1462 return -EINVAL;
1463 }
1464
1465 priv->pause_auto = ecmd->autoneg;
1466 priv->pause_rx = ecmd->rx_pause;
1467 priv->pause_tx = ecmd->tx_pause;
1468
1469 return 0;
1470}
1471
1472static struct ethtool_ops bcm_enet_ethtool_ops = {
1473 .get_strings = bcm_enet_get_strings,
1474 .get_sset_count = bcm_enet_get_sset_count,
1475 .get_ethtool_stats = bcm_enet_get_ethtool_stats,
1476 .get_settings = bcm_enet_get_settings,
1477 .set_settings = bcm_enet_set_settings,
1478 .get_drvinfo = bcm_enet_get_drvinfo,
1479 .get_link = ethtool_op_get_link,
1480 .get_ringparam = bcm_enet_get_ringparam,
1481 .set_ringparam = bcm_enet_set_ringparam,
1482 .get_pauseparam = bcm_enet_get_pauseparam,
1483 .set_pauseparam = bcm_enet_set_pauseparam,
1484};
1485
1486static int bcm_enet_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
1487{
1488 struct bcm_enet_priv *priv;
1489
1490 priv = netdev_priv(dev);
1491 if (priv->has_phy) {
1492 if (!priv->phydev)
1493 return -ENODEV;
1494 return phy_mii_ioctl(priv->phydev, rq, cmd);
1495 } else {
1496 struct mii_if_info mii;
1497
1498 mii.dev = dev;
1499 mii.mdio_read = bcm_enet_mdio_read_mii;
1500 mii.mdio_write = bcm_enet_mdio_write_mii;
1501 mii.phy_id = 0;
1502 mii.phy_id_mask = 0x3f;
1503 mii.reg_num_mask = 0x1f;
1504 return generic_mii_ioctl(&mii, if_mii(rq), cmd, NULL);
1505 }
1506}
1507
1508
1509
1510
1511static int compute_hw_mtu(struct bcm_enet_priv *priv, int mtu)
1512{
1513 int actual_mtu;
1514
1515 actual_mtu = mtu;
1516
1517
1518 actual_mtu += VLAN_ETH_HLEN;
1519
1520 if (actual_mtu < 64 || actual_mtu > BCMENET_MAX_MTU)
1521 return -EINVAL;
1522
1523
1524
1525
1526
1527
1528
1529 priv->hw_mtu = actual_mtu;
1530
1531
1532
1533
1534
1535 priv->rx_skb_size = ALIGN(actual_mtu + ETH_FCS_LEN,
1536 BCMENET_DMA_MAXBURST * 4);
1537 return 0;
1538}
1539
1540
1541
1542
1543static int bcm_enet_change_mtu(struct net_device *dev, int new_mtu)
1544{
1545 int ret;
1546
1547 if (netif_running(dev))
1548 return -EBUSY;
1549
1550 ret = compute_hw_mtu(netdev_priv(dev), new_mtu);
1551 if (ret)
1552 return ret;
1553 dev->mtu = new_mtu;
1554 return 0;
1555}
1556
1557
1558
1559
1560static void bcm_enet_hw_preinit(struct bcm_enet_priv *priv)
1561{
1562 u32 val;
1563 int limit;
1564
1565
1566 bcm_enet_disable_mac(priv);
1567
1568
1569 val = ENET_CTL_SRESET_MASK;
1570 enet_writel(priv, val, ENET_CTL_REG);
1571 wmb();
1572
1573 limit = 1000;
1574 do {
1575 val = enet_readl(priv, ENET_CTL_REG);
1576 if (!(val & ENET_CTL_SRESET_MASK))
1577 break;
1578 udelay(1);
1579 } while (limit--);
1580
1581
1582 val = enet_readl(priv, ENET_CTL_REG);
1583 if (priv->use_external_mii)
1584 val |= ENET_CTL_EPHYSEL_MASK;
1585 else
1586 val &= ~ENET_CTL_EPHYSEL_MASK;
1587 enet_writel(priv, val, ENET_CTL_REG);
1588
1589
1590 enet_writel(priv, (0x1f << ENET_MIISC_MDCFREQDIV_SHIFT) |
1591 ENET_MIISC_PREAMBLEEN_MASK, ENET_MIISC_REG);
1592
1593
1594 val = enet_readl(priv, ENET_MIBCTL_REG);
1595 val |= ENET_MIBCTL_RDCLEAR_MASK;
1596 enet_writel(priv, val, ENET_MIBCTL_REG);
1597}
1598
1599static const struct net_device_ops bcm_enet_ops = {
1600 .ndo_open = bcm_enet_open,
1601 .ndo_stop = bcm_enet_stop,
1602 .ndo_start_xmit = bcm_enet_start_xmit,
1603 .ndo_set_mac_address = bcm_enet_set_mac_address,
1604 .ndo_set_multicast_list = bcm_enet_set_multicast_list,
1605 .ndo_do_ioctl = bcm_enet_ioctl,
1606 .ndo_change_mtu = bcm_enet_change_mtu,
1607#ifdef CONFIG_NET_POLL_CONTROLLER
1608 .ndo_poll_controller = bcm_enet_netpoll,
1609#endif
1610};
1611
1612
1613
1614
1615static int __devinit bcm_enet_probe(struct platform_device *pdev)
1616{
1617 struct bcm_enet_priv *priv;
1618 struct net_device *dev;
1619 struct bcm63xx_enet_platform_data *pd;
1620 struct resource *res_mem, *res_irq, *res_irq_rx, *res_irq_tx;
1621 struct mii_bus *bus;
1622 const char *clk_name;
1623 unsigned int iomem_size;
1624 int i, ret;
1625
1626
1627
1628 if (!bcm_enet_shared_base)
1629 return -ENODEV;
1630
1631 res_mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1632 res_irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
1633 res_irq_rx = platform_get_resource(pdev, IORESOURCE_IRQ, 1);
1634 res_irq_tx = platform_get_resource(pdev, IORESOURCE_IRQ, 2);
1635 if (!res_mem || !res_irq || !res_irq_rx || !res_irq_tx)
1636 return -ENODEV;
1637
1638 ret = 0;
1639 dev = alloc_etherdev(sizeof(*priv));
1640 if (!dev)
1641 return -ENOMEM;
1642 priv = netdev_priv(dev);
1643
1644 ret = compute_hw_mtu(priv, dev->mtu);
1645 if (ret)
1646 goto out;
1647
1648 iomem_size = res_mem->end - res_mem->start + 1;
1649 if (!request_mem_region(res_mem->start, iomem_size, "bcm63xx_enet")) {
1650 ret = -EBUSY;
1651 goto out;
1652 }
1653
1654 priv->base = ioremap(res_mem->start, iomem_size);
1655 if (priv->base == NULL) {
1656 ret = -ENOMEM;
1657 goto out_release_mem;
1658 }
1659 dev->irq = priv->irq = res_irq->start;
1660 priv->irq_rx = res_irq_rx->start;
1661 priv->irq_tx = res_irq_tx->start;
1662 priv->mac_id = pdev->id;
1663
1664
1665 if (priv->mac_id == 0) {
1666 priv->rx_chan = 0;
1667 priv->tx_chan = 1;
1668 clk_name = "enet0";
1669 } else {
1670 priv->rx_chan = 2;
1671 priv->tx_chan = 3;
1672 clk_name = "enet1";
1673 }
1674
1675 priv->mac_clk = clk_get(&pdev->dev, clk_name);
1676 if (IS_ERR(priv->mac_clk)) {
1677 ret = PTR_ERR(priv->mac_clk);
1678 goto out_unmap;
1679 }
1680 clk_enable(priv->mac_clk);
1681
1682
1683 priv->rx_ring_size = BCMENET_DEF_RX_DESC;
1684 priv->tx_ring_size = BCMENET_DEF_TX_DESC;
1685
1686 pd = pdev->dev.platform_data;
1687 if (pd) {
1688 memcpy(dev->dev_addr, pd->mac_addr, ETH_ALEN);
1689 priv->has_phy = pd->has_phy;
1690 priv->phy_id = pd->phy_id;
1691 priv->has_phy_interrupt = pd->has_phy_interrupt;
1692 priv->phy_interrupt = pd->phy_interrupt;
1693 priv->use_external_mii = !pd->use_internal_phy;
1694 priv->pause_auto = pd->pause_auto;
1695 priv->pause_rx = pd->pause_rx;
1696 priv->pause_tx = pd->pause_tx;
1697 priv->force_duplex_full = pd->force_duplex_full;
1698 priv->force_speed_100 = pd->force_speed_100;
1699 }
1700
1701 if (priv->mac_id == 0 && priv->has_phy && !priv->use_external_mii) {
1702
1703 priv->phy_clk = clk_get(&pdev->dev, "ephy");
1704 if (IS_ERR(priv->phy_clk)) {
1705 ret = PTR_ERR(priv->phy_clk);
1706 priv->phy_clk = NULL;
1707 goto out_put_clk_mac;
1708 }
1709 clk_enable(priv->phy_clk);
1710 }
1711
1712
1713 bcm_enet_hw_preinit(priv);
1714
1715
1716 if (priv->has_phy) {
1717
1718 priv->mii_bus = mdiobus_alloc();
1719 if (!priv->mii_bus) {
1720 ret = -ENOMEM;
1721 goto out_uninit_hw;
1722 }
1723
1724 bus = priv->mii_bus;
1725 bus->name = "bcm63xx_enet MII bus";
1726 bus->parent = &pdev->dev;
1727 bus->priv = priv;
1728 bus->read = bcm_enet_mdio_read_phylib;
1729 bus->write = bcm_enet_mdio_write_phylib;
1730 sprintf(bus->id, "%d", priv->mac_id);
1731
1732
1733
1734
1735 bus->phy_mask = ~(1 << priv->phy_id);
1736
1737 bus->irq = kmalloc(sizeof(int) * PHY_MAX_ADDR, GFP_KERNEL);
1738 if (!bus->irq) {
1739 ret = -ENOMEM;
1740 goto out_free_mdio;
1741 }
1742
1743 if (priv->has_phy_interrupt)
1744 bus->irq[priv->phy_id] = priv->phy_interrupt;
1745 else
1746 bus->irq[priv->phy_id] = PHY_POLL;
1747
1748 ret = mdiobus_register(bus);
1749 if (ret) {
1750 dev_err(&pdev->dev, "unable to register mdio bus\n");
1751 goto out_free_mdio;
1752 }
1753 } else {
1754
1755
1756 if (pd->mii_config &&
1757 pd->mii_config(dev, 1, bcm_enet_mdio_read_mii,
1758 bcm_enet_mdio_write_mii)) {
1759 dev_err(&pdev->dev, "unable to configure mdio bus\n");
1760 goto out_uninit_hw;
1761 }
1762 }
1763
1764 spin_lock_init(&priv->rx_lock);
1765
1766
1767 init_timer(&priv->rx_timeout);
1768 priv->rx_timeout.function = bcm_enet_refill_rx_timer;
1769 priv->rx_timeout.data = (unsigned long)dev;
1770
1771
1772 mutex_init(&priv->mib_update_lock);
1773 INIT_WORK(&priv->mib_update_task, bcm_enet_update_mib_counters_defer);
1774
1775
1776 for (i = 0; i < ENET_MIB_REG_COUNT; i++)
1777 enet_writel(priv, 0, ENET_MIB_REG(i));
1778
1779
1780 dev->netdev_ops = &bcm_enet_ops;
1781 netif_napi_add(dev, &priv->napi, bcm_enet_poll, 16);
1782
1783 SET_ETHTOOL_OPS(dev, &bcm_enet_ethtool_ops);
1784 SET_NETDEV_DEV(dev, &pdev->dev);
1785
1786 ret = register_netdev(dev);
1787 if (ret)
1788 goto out_unregister_mdio;
1789
1790 netif_carrier_off(dev);
1791 platform_set_drvdata(pdev, dev);
1792 priv->pdev = pdev;
1793 priv->net_dev = dev;
1794
1795 return 0;
1796
1797out_unregister_mdio:
1798 if (priv->mii_bus) {
1799 mdiobus_unregister(priv->mii_bus);
1800 kfree(priv->mii_bus->irq);
1801 }
1802
1803out_free_mdio:
1804 if (priv->mii_bus)
1805 mdiobus_free(priv->mii_bus);
1806
1807out_uninit_hw:
1808
1809 enet_writel(priv, 0, ENET_MIISC_REG);
1810 if (priv->phy_clk) {
1811 clk_disable(priv->phy_clk);
1812 clk_put(priv->phy_clk);
1813 }
1814
1815out_put_clk_mac:
1816 clk_disable(priv->mac_clk);
1817 clk_put(priv->mac_clk);
1818
1819out_unmap:
1820 iounmap(priv->base);
1821
1822out_release_mem:
1823 release_mem_region(res_mem->start, iomem_size);
1824out:
1825 free_netdev(dev);
1826 return ret;
1827}
1828
1829
1830
1831
1832
1833static int __devexit bcm_enet_remove(struct platform_device *pdev)
1834{
1835 struct bcm_enet_priv *priv;
1836 struct net_device *dev;
1837 struct resource *res;
1838
1839
1840 dev = platform_get_drvdata(pdev);
1841 priv = netdev_priv(dev);
1842 unregister_netdev(dev);
1843
1844
1845 enet_writel(priv, 0, ENET_MIISC_REG);
1846
1847 if (priv->has_phy) {
1848 mdiobus_unregister(priv->mii_bus);
1849 kfree(priv->mii_bus->irq);
1850 mdiobus_free(priv->mii_bus);
1851 } else {
1852 struct bcm63xx_enet_platform_data *pd;
1853
1854 pd = pdev->dev.platform_data;
1855 if (pd && pd->mii_config)
1856 pd->mii_config(dev, 0, bcm_enet_mdio_read_mii,
1857 bcm_enet_mdio_write_mii);
1858 }
1859
1860
1861 iounmap(priv->base);
1862 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1863 release_mem_region(res->start, res->end - res->start + 1);
1864
1865
1866 if (priv->phy_clk) {
1867 clk_disable(priv->phy_clk);
1868 clk_put(priv->phy_clk);
1869 }
1870 clk_disable(priv->mac_clk);
1871 clk_put(priv->mac_clk);
1872
1873 platform_set_drvdata(pdev, NULL);
1874 free_netdev(dev);
1875 return 0;
1876}
1877
1878struct platform_driver bcm63xx_enet_driver = {
1879 .probe = bcm_enet_probe,
1880 .remove = __devexit_p(bcm_enet_remove),
1881 .driver = {
1882 .name = "bcm63xx_enet",
1883 .owner = THIS_MODULE,
1884 },
1885};
1886
1887
1888
1889
1890static int __devinit bcm_enet_shared_probe(struct platform_device *pdev)
1891{
1892 struct resource *res;
1893 unsigned int iomem_size;
1894
1895 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1896 if (!res)
1897 return -ENODEV;
1898
1899 iomem_size = res->end - res->start + 1;
1900 if (!request_mem_region(res->start, iomem_size, "bcm63xx_enet_dma"))
1901 return -EBUSY;
1902
1903 bcm_enet_shared_base = ioremap(res->start, iomem_size);
1904 if (!bcm_enet_shared_base) {
1905 release_mem_region(res->start, iomem_size);
1906 return -ENOMEM;
1907 }
1908 return 0;
1909}
1910
1911static int __devexit bcm_enet_shared_remove(struct platform_device *pdev)
1912{
1913 struct resource *res;
1914
1915 iounmap(bcm_enet_shared_base);
1916 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1917 release_mem_region(res->start, res->end - res->start + 1);
1918 return 0;
1919}
1920
1921
1922
1923
1924
1925struct platform_driver bcm63xx_enet_shared_driver = {
1926 .probe = bcm_enet_shared_probe,
1927 .remove = __devexit_p(bcm_enet_shared_remove),
1928 .driver = {
1929 .name = "bcm63xx_enet_shared",
1930 .owner = THIS_MODULE,
1931 },
1932};
1933
1934
1935
1936
1937static int __init bcm_enet_init(void)
1938{
1939 int ret;
1940
1941 ret = platform_driver_register(&bcm63xx_enet_shared_driver);
1942 if (ret)
1943 return ret;
1944
1945 ret = platform_driver_register(&bcm63xx_enet_driver);
1946 if (ret)
1947 platform_driver_unregister(&bcm63xx_enet_shared_driver);
1948
1949 return ret;
1950}
1951
1952static void __exit bcm_enet_exit(void)
1953{
1954 platform_driver_unregister(&bcm63xx_enet_driver);
1955 platform_driver_unregister(&bcm63xx_enet_shared_driver);
1956}
1957
1958
1959module_init(bcm_enet_init);
1960module_exit(bcm_enet_exit);
1961
1962MODULE_DESCRIPTION("BCM63xx internal ethernet mac driver");
1963MODULE_AUTHOR("Maxime Bizon <mbizon@freebox.fr>");
1964MODULE_LICENSE("GPL");
1965
