1 /* de2104x.c: A Linux PCI Ethernet driver for Intel/Digital 21040/1 chips. */
3 Copyright 2001,2003 Jeff Garzik <jgarzik@pobox.com>
5 Copyright 1994, 1995 Digital Equipment Corporation. [de4x5.c]
6 Written/copyright 1994-2001 by Donald Becker. [tulip.c]
8 This software may be used and distributed according to the terms of
9 the GNU General Public License (GPL), incorporated herein by reference.
10 Drivers based on or derived from this code fall under the GPL and must
11 retain the authorship, copyright and license notice. This file is not
12 a complete program and may only be used when the entire operating
13 system is licensed under the GPL.
15 See the file COPYING in this distribution for more information.
17 TODO, in rough priority order:
18 * Support forcing media type with a module parameter,
19 like dl2k.c/sundance.c
20 * Constants (module parms?) for Rx work limit
21 * Complete reset on PciErr
22 * Jumbo frames / dev->change_mtu
23 * Adjust Rx FIFO threshold and Max Rx DMA burst on Rx FIFO error
24 * Adjust Tx FIFO threshold and Max Tx DMA burst on Tx FIFO error
25 * Implement Tx software interrupt mitigation via
30 #define DRV_NAME "de2104x"
31 #define DRV_VERSION "0.7"
32 #define DRV_RELDATE "Mar 17, 2004"
34 #include <linux/module.h>
35 #include <linux/kernel.h>
36 #include <linux/netdevice.h>
37 #include <linux/etherdevice.h>
38 #include <linux/init.h>
39 #include <linux/pci.h>
40 #include <linux/delay.h>
41 #include <linux/ethtool.h>
42 #include <linux/compiler.h>
43 #include <linux/rtnetlink.h>
44 #include <linux/crc32.h>
45 #include <linux/slab.h>
49 #include <asm/uaccess.h>
50 #include <asm/unaligned.h>
52 /* These identify the driver base version and may not be removed. */
53 static char version[] =
54 KERN_INFO DRV_NAME " PCI Ethernet driver v" DRV_VERSION " (" DRV_RELDATE ")\n";
56 MODULE_AUTHOR("Jeff Garzik <jgarzik@pobox.com>");
57 MODULE_DESCRIPTION("Intel/Digital 21040/1 series PCI Ethernet driver");
58 MODULE_LICENSE("GPL");
59 MODULE_VERSION(DRV_VERSION);
61 static int debug = -1;
62 module_param (debug, int, 0);
63 MODULE_PARM_DESC (debug, "de2104x bitmapped message enable number");
65 /* Set the copy breakpoint for the copy-only-tiny-buffer Rx structure. */
66 #if defined(__alpha__) || defined(__arm__) || defined(__hppa__) || \
67 defined(CONFIG_SPARC) || defined(__ia64__) || \
68 defined(__sh__) || defined(__mips__)
69 static int rx_copybreak = 1518;
71 static int rx_copybreak = 100;
73 module_param (rx_copybreak, int, 0);
74 MODULE_PARM_DESC (rx_copybreak, "de2104x Breakpoint at which Rx packets are copied");
76 #define PFX DRV_NAME ": "
78 #define DE_DEF_MSG_ENABLE (NETIF_MSG_DRV | \
86 /* Descriptor skip length in 32 bit longwords. */
87 #ifndef CONFIG_DE2104X_DSL
90 #define DSL CONFIG_DE2104X_DSL
93 #define DE_RX_RING_SIZE 64
94 #define DE_TX_RING_SIZE 64
95 #define DE_RING_BYTES \
96 ((sizeof(struct de_desc) * DE_RX_RING_SIZE) + \
97 (sizeof(struct de_desc) * DE_TX_RING_SIZE))
98 #define NEXT_TX(N) (((N) + 1) & (DE_TX_RING_SIZE - 1))
99 #define NEXT_RX(N) (((N) + 1) & (DE_RX_RING_SIZE - 1))
100 #define TX_BUFFS_AVAIL(CP) \
101 (((CP)->tx_tail <= (CP)->tx_head) ? \
102 (CP)->tx_tail + (DE_TX_RING_SIZE - 1) - (CP)->tx_head : \
103 (CP)->tx_tail - (CP)->tx_head - 1)
105 #define PKT_BUF_SZ 1536 /* Size of each temporary Rx buffer.*/
108 #define DE_SETUP_SKB ((struct sk_buff *) 1)
109 #define DE_DUMMY_SKB ((struct sk_buff *) 2)
110 #define DE_SETUP_FRAME_WORDS 96
111 #define DE_EEPROM_WORDS 256
112 #define DE_EEPROM_SIZE (DE_EEPROM_WORDS * sizeof(u16))
113 #define DE_MAX_MEDIA 5
115 #define DE_MEDIA_TP_AUTO 0
116 #define DE_MEDIA_BNC 1
117 #define DE_MEDIA_AUI 2
118 #define DE_MEDIA_TP 3
119 #define DE_MEDIA_TP_FD 4
120 #define DE_MEDIA_INVALID DE_MAX_MEDIA
121 #define DE_MEDIA_FIRST 0
122 #define DE_MEDIA_LAST (DE_MAX_MEDIA - 1)
123 #define DE_AUI_BNC (SUPPORTED_AUI | SUPPORTED_BNC)
125 #define DE_TIMER_LINK (60 * HZ)
126 #define DE_TIMER_NO_LINK (5 * HZ)
128 #define DE_NUM_REGS 16
129 #define DE_REGS_SIZE (DE_NUM_REGS * sizeof(u32))
130 #define DE_REGS_VER 1
132 /* Time in jiffies before concluding the transmitter is hung. */
133 #define TX_TIMEOUT (6*HZ)
135 /* This is a mysterious value that can be written to CSR11 in the 21040 (only)
136 to support a pre-NWay full-duplex signaling mechanism using short frames.
137 No one knows what it should be, but if left at its default value some
138 10base2(!) packets trigger a full-duplex-request interrupt. */
139 #define FULL_DUPLEX_MAGIC 0x6969
162 CacheAlign16 = 0x00008000,
163 BurstLen4 = 0x00000400,
164 DescSkipLen = (DSL << 2),
167 NormalTxPoll = (1 << 0),
168 NormalRxPoll = (1 << 0),
170 /* Tx/Rx descriptor status bits */
173 RxErrLong = (1 << 7),
175 RxErrFIFO = (1 << 0),
176 RxErrRunt = (1 << 11),
177 RxErrFrame = (1 << 14),
179 FirstFrag = (1 << 29),
180 LastFrag = (1 << 30),
182 TxFIFOUnder = (1 << 1),
183 TxLinkFail = (1 << 2) | (1 << 10) | (1 << 11),
186 TxJabber = (1 << 14),
187 SetupFrame = (1 << 27),
198 TxState = (1 << 22) | (1 << 21) | (1 << 20),
199 RxState = (1 << 19) | (1 << 18) | (1 << 17),
200 LinkFail = (1 << 12),
202 RxStopped = (1 << 8),
203 TxStopped = (1 << 1),
206 TxEnable = (1 << 13),
208 RxTx = TxEnable | RxEnable,
209 FullDuplex = (1 << 9),
210 AcceptAllMulticast = (1 << 7),
211 AcceptAllPhys = (1 << 6),
213 MacModeClear = (1<<12) | (1<<11) | (1<<10) | (1<<8) | (1<<3) |
214 RxTx | BOCnt | AcceptAllPhys | AcceptAllMulticast,
217 EE_SHIFT_CLK = 0x02, /* EEPROM shift clock. */
218 EE_CS = 0x01, /* EEPROM chip select. */
219 EE_DATA_WRITE = 0x04, /* Data from the Tulip to EEPROM. */
222 EE_DATA_READ = 0x08, /* Data from the EEPROM chip. */
223 EE_ENB = (0x4800 | EE_CS),
225 /* The EEPROM commands include the alway-set leading bit. */
229 RxMissedOver = (1 << 16),
230 RxMissedMask = 0xffff,
232 /* SROM-related bits */
234 MediaBlockMask = 0x3f,
235 MediaCustomCSRs = (1 << 6),
238 PM_Sleep = (1 << 31),
239 PM_Snooze = (1 << 30),
240 PM_Mask = PM_Sleep | PM_Snooze,
243 NWayState = (1 << 14) | (1 << 13) | (1 << 12),
244 NWayRestart = (1 << 12),
245 NonselPortActive = (1 << 9),
246 SelPortActive = (1 << 8),
247 LinkFailStatus = (1 << 2),
248 NetCxnErr = (1 << 1),
251 static const u32 de_intr_mask =
252 IntrOK | IntrErr | RxIntr | RxEmpty | TxIntr | TxEmpty |
253 LinkPass | LinkFail | PciErr;
256 * Set the programmable burst length to 4 longwords for all:
257 * DMA errors result without these values. Cache align 16 long.
259 static const u32 de_bus_mode = CacheAlign16 | BurstLen4 | DescSkipLen;
261 struct de_srom_media_block {
268 struct de_srom_info_leaf {
285 u16 type; /* DE_MEDIA_xxx */
302 struct net_device *dev;
305 struct de_desc *rx_ring;
306 struct de_desc *tx_ring;
307 struct ring_info tx_skb[DE_TX_RING_SIZE];
308 struct ring_info rx_skb[DE_RX_RING_SIZE];
314 struct net_device_stats net_stats;
316 struct pci_dev *pdev;
318 u16 setup_frame[DE_SETUP_FRAME_WORDS];
323 struct media_info media[DE_MAX_MEDIA];
324 struct timer_list media_timer;
328 unsigned de21040 : 1;
329 unsigned media_lock : 1;
333 static void de_set_rx_mode (struct net_device *dev);
334 static void de_tx (struct de_private *de);
335 static void de_clean_rings (struct de_private *de);
336 static void de_media_interrupt (struct de_private *de, u32 status);
337 static void de21040_media_timer (unsigned long data);
338 static void de21041_media_timer (unsigned long data);
339 static unsigned int de_ok_to_advertise (struct de_private *de, u32 new_media);
342 static DEFINE_PCI_DEVICE_TABLE(de_pci_tbl) = {
343 { PCI_VENDOR_ID_DEC, PCI_DEVICE_ID_DEC_TULIP,
344 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
345 { PCI_VENDOR_ID_DEC, PCI_DEVICE_ID_DEC_TULIP_PLUS,
346 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1 },
349 MODULE_DEVICE_TABLE(pci, de_pci_tbl);
351 static const char * const media_name[DE_MAX_MEDIA] = {
359 /* 21040 transceiver register settings:
360 * TP AUTO(unused), BNC(unused), AUI, TP, TP FD*/
361 static u16 t21040_csr13[] = { 0, 0, 0x8F09, 0x8F01, 0x8F01, };
362 static u16 t21040_csr14[] = { 0, 0, 0x0705, 0xFFFF, 0xFFFD, };
363 static u16 t21040_csr15[] = { 0, 0, 0x0006, 0x0000, 0x0000, };
365 /* 21041 transceiver register settings: TP AUTO, BNC, AUI, TP, TP FD*/
366 static u16 t21041_csr13[] = { 0xEF01, 0xEF09, 0xEF09, 0xEF01, 0xEF09, };
367 static u16 t21041_csr14[] = { 0xFFFF, 0xF7FD, 0xF7FD, 0x7F3F, 0x7F3D, };
368 /* If on-chip autonegotiation is broken, use half-duplex (FF3F) instead */
369 static u16 t21041_csr14_brk[] = { 0xFF3F, 0xF7FD, 0xF7FD, 0x7F3F, 0x7F3D, };
370 static u16 t21041_csr15[] = { 0x0008, 0x0006, 0x000E, 0x0008, 0x0008, };
373 #define dr32(reg) ioread32(de->regs + (reg))
374 #define dw32(reg, val) iowrite32((val), de->regs + (reg))
377 static void de_rx_err_acct (struct de_private *de, unsigned rx_tail,
380 if (netif_msg_rx_err (de))
382 "%s: rx err, slot %d status 0x%x len %d\n",
383 de->dev->name, rx_tail, status, len);
385 if ((status & 0x38000300) != 0x0300) {
386 /* Ingore earlier buffers. */
387 if ((status & 0xffff) != 0x7fff) {
388 if (netif_msg_rx_err(de))
389 dev_warn(&de->dev->dev,
390 "Oversized Ethernet frame spanned multiple buffers, status %08x!\n",
392 de->net_stats.rx_length_errors++;
394 } else if (status & RxError) {
395 /* There was a fatal error. */
396 de->net_stats.rx_errors++; /* end of a packet.*/
397 if (status & 0x0890) de->net_stats.rx_length_errors++;
398 if (status & RxErrCRC) de->net_stats.rx_crc_errors++;
399 if (status & RxErrFIFO) de->net_stats.rx_fifo_errors++;
403 static void de_rx (struct de_private *de)
405 unsigned rx_tail = de->rx_tail;
406 unsigned rx_work = DE_RX_RING_SIZE;
413 struct sk_buff *skb, *copy_skb;
414 unsigned copying_skb, buflen;
416 skb = de->rx_skb[rx_tail].skb;
419 status = le32_to_cpu(de->rx_ring[rx_tail].opts1);
420 if (status & DescOwn)
423 len = ((status >> 16) & 0x7ff) - 4;
424 mapping = de->rx_skb[rx_tail].mapping;
426 if (unlikely(drop)) {
427 de->net_stats.rx_dropped++;
431 if (unlikely((status & 0x38008300) != 0x0300)) {
432 de_rx_err_acct(de, rx_tail, status, len);
436 copying_skb = (len <= rx_copybreak);
438 if (unlikely(netif_msg_rx_status(de)))
439 printk(KERN_DEBUG "%s: rx slot %d status 0x%x len %d copying? %d\n",
440 de->dev->name, rx_tail, status, len,
443 buflen = copying_skb ? (len + RX_OFFSET) : de->rx_buf_sz;
444 copy_skb = dev_alloc_skb (buflen);
445 if (unlikely(!copy_skb)) {
446 de->net_stats.rx_dropped++;
453 pci_unmap_single(de->pdev, mapping,
454 buflen, PCI_DMA_FROMDEVICE);
458 de->rx_skb[rx_tail].mapping =
459 pci_map_single(de->pdev, copy_skb->data,
460 buflen, PCI_DMA_FROMDEVICE);
461 de->rx_skb[rx_tail].skb = copy_skb;
463 pci_dma_sync_single_for_cpu(de->pdev, mapping, len, PCI_DMA_FROMDEVICE);
464 skb_reserve(copy_skb, RX_OFFSET);
465 skb_copy_from_linear_data(skb, skb_put(copy_skb, len),
467 pci_dma_sync_single_for_device(de->pdev, mapping, len, PCI_DMA_FROMDEVICE);
469 /* We'll reuse the original ring buffer. */
473 skb->protocol = eth_type_trans (skb, de->dev);
475 de->net_stats.rx_packets++;
476 de->net_stats.rx_bytes += skb->len;
478 if (rc == NET_RX_DROP)
482 if (rx_tail == (DE_RX_RING_SIZE - 1))
483 de->rx_ring[rx_tail].opts2 =
484 cpu_to_le32(RingEnd | de->rx_buf_sz);
486 de->rx_ring[rx_tail].opts2 = cpu_to_le32(de->rx_buf_sz);
487 de->rx_ring[rx_tail].addr1 = cpu_to_le32(mapping);
489 de->rx_ring[rx_tail].opts1 = cpu_to_le32(DescOwn);
490 rx_tail = NEXT_RX(rx_tail);
494 dev_warn(&de->dev->dev, "rx work limit reached\n");
496 de->rx_tail = rx_tail;
499 static irqreturn_t de_interrupt (int irq, void *dev_instance)
501 struct net_device *dev = dev_instance;
502 struct de_private *de = netdev_priv(dev);
505 status = dr32(MacStatus);
506 if ((!(status & (IntrOK|IntrErr))) || (status == 0xFFFF))
509 if (netif_msg_intr(de))
510 printk(KERN_DEBUG "%s: intr, status %08x mode %08x desc %u/%u/%u\n",
511 dev->name, status, dr32(MacMode),
512 de->rx_tail, de->tx_head, de->tx_tail);
514 dw32(MacStatus, status);
516 if (status & (RxIntr | RxEmpty)) {
518 if (status & RxEmpty)
519 dw32(RxPoll, NormalRxPoll);
522 spin_lock(&de->lock);
524 if (status & (TxIntr | TxEmpty))
527 if (status & (LinkPass | LinkFail))
528 de_media_interrupt(de, status);
530 spin_unlock(&de->lock);
532 if (status & PciErr) {
535 pci_read_config_word(de->pdev, PCI_STATUS, &pci_status);
536 pci_write_config_word(de->pdev, PCI_STATUS, pci_status);
537 dev_err(&de->dev->dev,
538 "PCI bus error, status=%08x, PCI status=%04x\n",
545 static void de_tx (struct de_private *de)
547 unsigned tx_head = de->tx_head;
548 unsigned tx_tail = de->tx_tail;
550 while (tx_tail != tx_head) {
555 status = le32_to_cpu(de->tx_ring[tx_tail].opts1);
556 if (status & DescOwn)
559 skb = de->tx_skb[tx_tail].skb;
561 if (unlikely(skb == DE_DUMMY_SKB))
564 if (unlikely(skb == DE_SETUP_SKB)) {
565 pci_unmap_single(de->pdev, de->tx_skb[tx_tail].mapping,
566 sizeof(de->setup_frame), PCI_DMA_TODEVICE);
570 pci_unmap_single(de->pdev, de->tx_skb[tx_tail].mapping,
571 skb->len, PCI_DMA_TODEVICE);
573 if (status & LastFrag) {
574 if (status & TxError) {
575 if (netif_msg_tx_err(de))
576 printk(KERN_DEBUG "%s: tx err, status 0x%x\n",
577 de->dev->name, status);
578 de->net_stats.tx_errors++;
580 de->net_stats.tx_window_errors++;
581 if (status & TxMaxCol)
582 de->net_stats.tx_aborted_errors++;
583 if (status & TxLinkFail)
584 de->net_stats.tx_carrier_errors++;
585 if (status & TxFIFOUnder)
586 de->net_stats.tx_fifo_errors++;
588 de->net_stats.tx_packets++;
589 de->net_stats.tx_bytes += skb->len;
590 if (netif_msg_tx_done(de))
591 printk(KERN_DEBUG "%s: tx done, slot %d\n",
592 de->dev->name, tx_tail);
594 dev_kfree_skb_irq(skb);
598 de->tx_skb[tx_tail].skb = NULL;
600 tx_tail = NEXT_TX(tx_tail);
603 de->tx_tail = tx_tail;
605 if (netif_queue_stopped(de->dev) && (TX_BUFFS_AVAIL(de) > (DE_TX_RING_SIZE / 4)))
606 netif_wake_queue(de->dev);
609 static netdev_tx_t de_start_xmit (struct sk_buff *skb,
610 struct net_device *dev)
612 struct de_private *de = netdev_priv(dev);
613 unsigned int entry, tx_free;
614 u32 mapping, len, flags = FirstFrag | LastFrag;
617 spin_lock_irq(&de->lock);
619 tx_free = TX_BUFFS_AVAIL(de);
621 netif_stop_queue(dev);
622 spin_unlock_irq(&de->lock);
623 return NETDEV_TX_BUSY;
629 txd = &de->tx_ring[entry];
632 mapping = pci_map_single(de->pdev, skb->data, len, PCI_DMA_TODEVICE);
633 if (entry == (DE_TX_RING_SIZE - 1))
635 if (!tx_free || (tx_free == (DE_TX_RING_SIZE / 2)))
638 txd->opts2 = cpu_to_le32(flags);
639 txd->addr1 = cpu_to_le32(mapping);
641 de->tx_skb[entry].skb = skb;
642 de->tx_skb[entry].mapping = mapping;
645 txd->opts1 = cpu_to_le32(DescOwn);
648 de->tx_head = NEXT_TX(entry);
649 if (netif_msg_tx_queued(de))
650 printk(KERN_DEBUG "%s: tx queued, slot %d, skblen %d\n",
651 dev->name, entry, skb->len);
654 netif_stop_queue(dev);
656 spin_unlock_irq(&de->lock);
658 /* Trigger an immediate transmit demand. */
659 dw32(TxPoll, NormalTxPoll);
664 /* Set or clear the multicast filter for this adaptor.
665 Note that we only use exclusion around actually queueing the
666 new frame, not around filling de->setup_frame. This is non-deterministic
667 when re-entered but still correct. */
670 #define set_bit_le(i,p) do { ((char *)(p))[(i)/8] |= (1<<((i)%8)); } while(0)
672 static void build_setup_frame_hash(u16 *setup_frm, struct net_device *dev)
674 struct de_private *de = netdev_priv(dev);
676 struct netdev_hw_addr *ha;
680 memset(hash_table, 0, sizeof(hash_table));
681 set_bit_le(255, hash_table); /* Broadcast entry */
682 /* This should work on big-endian machines as well. */
683 netdev_for_each_mc_addr(ha, dev) {
684 int index = ether_crc_le(ETH_ALEN, ha->addr) & 0x1ff;
686 set_bit_le(index, hash_table);
689 for (i = 0; i < 32; i++) {
690 *setup_frm++ = hash_table[i];
691 *setup_frm++ = hash_table[i];
693 setup_frm = &de->setup_frame[13*6];
695 /* Fill the final entry with our physical address. */
696 eaddrs = (u16 *)dev->dev_addr;
697 *setup_frm++ = eaddrs[0]; *setup_frm++ = eaddrs[0];
698 *setup_frm++ = eaddrs[1]; *setup_frm++ = eaddrs[1];
699 *setup_frm++ = eaddrs[2]; *setup_frm++ = eaddrs[2];
702 static void build_setup_frame_perfect(u16 *setup_frm, struct net_device *dev)
704 struct de_private *de = netdev_priv(dev);
705 struct netdev_hw_addr *ha;
708 /* We have <= 14 addresses so we can use the wonderful
709 16 address perfect filtering of the Tulip. */
710 netdev_for_each_mc_addr(ha, dev) {
711 eaddrs = (u16 *) ha->addr;
712 *setup_frm++ = *eaddrs; *setup_frm++ = *eaddrs++;
713 *setup_frm++ = *eaddrs; *setup_frm++ = *eaddrs++;
714 *setup_frm++ = *eaddrs; *setup_frm++ = *eaddrs++;
716 /* Fill the unused entries with the broadcast address. */
717 memset(setup_frm, 0xff, (15 - netdev_mc_count(dev)) * 12);
718 setup_frm = &de->setup_frame[15*6];
720 /* Fill the final entry with our physical address. */
721 eaddrs = (u16 *)dev->dev_addr;
722 *setup_frm++ = eaddrs[0]; *setup_frm++ = eaddrs[0];
723 *setup_frm++ = eaddrs[1]; *setup_frm++ = eaddrs[1];
724 *setup_frm++ = eaddrs[2]; *setup_frm++ = eaddrs[2];
728 static void __de_set_rx_mode (struct net_device *dev)
730 struct de_private *de = netdev_priv(dev);
735 struct de_desc *dummy_txd = NULL;
737 macmode = dr32(MacMode) & ~(AcceptAllMulticast | AcceptAllPhys);
739 if (dev->flags & IFF_PROMISC) { /* Set promiscuous. */
740 macmode |= AcceptAllMulticast | AcceptAllPhys;
744 if ((netdev_mc_count(dev) > 1000) || (dev->flags & IFF_ALLMULTI)) {
745 /* Too many to filter well -- accept all multicasts. */
746 macmode |= AcceptAllMulticast;
750 /* Note that only the low-address shortword of setup_frame is valid!
751 The values are doubled for big-endian architectures. */
752 if (netdev_mc_count(dev) > 14) /* Must use a multicast hash table. */
753 build_setup_frame_hash (de->setup_frame, dev);
755 build_setup_frame_perfect (de->setup_frame, dev);
758 * Now add this frame to the Tx list.
763 /* Avoid a chip errata by prefixing a dummy entry. */
765 de->tx_skb[entry].skb = DE_DUMMY_SKB;
767 dummy_txd = &de->tx_ring[entry];
768 dummy_txd->opts2 = (entry == (DE_TX_RING_SIZE - 1)) ?
769 cpu_to_le32(RingEnd) : 0;
770 dummy_txd->addr1 = 0;
772 /* Must set DescOwned later to avoid race with chip */
774 entry = NEXT_TX(entry);
777 de->tx_skb[entry].skb = DE_SETUP_SKB;
778 de->tx_skb[entry].mapping = mapping =
779 pci_map_single (de->pdev, de->setup_frame,
780 sizeof (de->setup_frame), PCI_DMA_TODEVICE);
782 /* Put the setup frame on the Tx list. */
783 txd = &de->tx_ring[entry];
784 if (entry == (DE_TX_RING_SIZE - 1))
785 txd->opts2 = cpu_to_le32(SetupFrame | RingEnd | sizeof (de->setup_frame));
787 txd->opts2 = cpu_to_le32(SetupFrame | sizeof (de->setup_frame));
788 txd->addr1 = cpu_to_le32(mapping);
791 txd->opts1 = cpu_to_le32(DescOwn);
795 dummy_txd->opts1 = cpu_to_le32(DescOwn);
799 de->tx_head = NEXT_TX(entry);
801 if (TX_BUFFS_AVAIL(de) == 0)
802 netif_stop_queue(dev);
804 /* Trigger an immediate transmit demand. */
805 dw32(TxPoll, NormalTxPoll);
808 if (macmode != dr32(MacMode))
809 dw32(MacMode, macmode);
812 static void de_set_rx_mode (struct net_device *dev)
815 struct de_private *de = netdev_priv(dev);
817 spin_lock_irqsave (&de->lock, flags);
818 __de_set_rx_mode(dev);
819 spin_unlock_irqrestore (&de->lock, flags);
822 static inline void de_rx_missed(struct de_private *de, u32 rx_missed)
824 if (unlikely(rx_missed & RxMissedOver))
825 de->net_stats.rx_missed_errors += RxMissedMask;
827 de->net_stats.rx_missed_errors += (rx_missed & RxMissedMask);
830 static void __de_get_stats(struct de_private *de)
832 u32 tmp = dr32(RxMissed); /* self-clearing */
834 de_rx_missed(de, tmp);
837 static struct net_device_stats *de_get_stats(struct net_device *dev)
839 struct de_private *de = netdev_priv(dev);
841 /* The chip only need report frame silently dropped. */
842 spin_lock_irq(&de->lock);
843 if (netif_running(dev) && netif_device_present(dev))
845 spin_unlock_irq(&de->lock);
847 return &de->net_stats;
850 static inline int de_is_running (struct de_private *de)
852 return (dr32(MacStatus) & (RxState | TxState)) ? 1 : 0;
855 static void de_stop_rxtx (struct de_private *de)
858 unsigned int i = 1300/100;
860 macmode = dr32(MacMode);
861 if (macmode & RxTx) {
862 dw32(MacMode, macmode & ~RxTx);
866 /* wait until in-flight frame completes.
867 * Max time @ 10BT: 1500*8b/10Mbps == 1200us (+ 100us margin)
868 * Typically expect this loop to end in < 50 us on 100BT.
871 if (!de_is_running(de))
876 dev_warn(&de->dev->dev, "timeout expired stopping DMA\n");
879 static inline void de_start_rxtx (struct de_private *de)
883 macmode = dr32(MacMode);
884 if ((macmode & RxTx) != RxTx) {
885 dw32(MacMode, macmode | RxTx);
890 static void de_stop_hw (struct de_private *de)
898 dw32(MacStatus, dr32(MacStatus));
903 de->tx_head = de->tx_tail = 0;
906 static void de_link_up(struct de_private *de)
908 if (!netif_carrier_ok(de->dev)) {
909 netif_carrier_on(de->dev);
910 if (netif_msg_link(de))
911 dev_info(&de->dev->dev, "link up, media %s\n",
912 media_name[de->media_type]);
916 static void de_link_down(struct de_private *de)
918 if (netif_carrier_ok(de->dev)) {
919 netif_carrier_off(de->dev);
920 if (netif_msg_link(de))
921 dev_info(&de->dev->dev, "link down\n");
925 static void de_set_media (struct de_private *de)
927 unsigned media = de->media_type;
928 u32 macmode = dr32(MacMode);
930 if (de_is_running(de))
931 dev_warn(&de->dev->dev,
932 "chip is running while changing media!\n");
935 dw32(CSR11, FULL_DUPLEX_MAGIC);
936 dw32(CSR13, 0); /* Reset phy */
937 dw32(CSR14, de->media[media].csr14);
938 dw32(CSR15, de->media[media].csr15);
939 dw32(CSR13, de->media[media].csr13);
941 /* must delay 10ms before writing to other registers,
946 if (media == DE_MEDIA_TP_FD)
947 macmode |= FullDuplex;
949 macmode &= ~FullDuplex;
951 if (netif_msg_link(de))
952 dev_info(&de->dev->dev, "set link %s\n", media_name[media]);
953 if (netif_msg_hw(de)) {
954 dev_info(&de->dev->dev, "mode 0x%x, sia 0x%x,0x%x,0x%x,0x%x\n",
955 dr32(MacMode), dr32(SIAStatus),
956 dr32(CSR13), dr32(CSR14), dr32(CSR15));
958 dev_info(&de->dev->dev,
959 "set mode 0x%x, set sia 0x%x,0x%x,0x%x\n",
960 macmode, de->media[media].csr13,
961 de->media[media].csr14, de->media[media].csr15);
963 if (macmode != dr32(MacMode))
964 dw32(MacMode, macmode);
967 static void de_next_media (struct de_private *de, u32 *media,
968 unsigned int n_media)
972 for (i = 0; i < n_media; i++) {
973 if (de_ok_to_advertise(de, media[i])) {
974 de->media_type = media[i];
980 static void de21040_media_timer (unsigned long data)
982 struct de_private *de = (struct de_private *) data;
983 struct net_device *dev = de->dev;
984 u32 status = dr32(SIAStatus);
985 unsigned int carrier;
988 carrier = (status & NetCxnErr) ? 0 : 1;
991 if (de->media_type != DE_MEDIA_AUI && (status & LinkFailStatus))
994 de->media_timer.expires = jiffies + DE_TIMER_LINK;
995 add_timer(&de->media_timer);
996 if (!netif_carrier_ok(dev))
999 if (netif_msg_timer(de))
1000 dev_info(&dev->dev, "%s link ok, status %x\n",
1001 media_name[de->media_type], status);
1010 if (de->media_type == DE_MEDIA_AUI) {
1011 u32 next_state = DE_MEDIA_TP;
1012 de_next_media(de, &next_state, 1);
1014 u32 next_state = DE_MEDIA_AUI;
1015 de_next_media(de, &next_state, 1);
1018 spin_lock_irqsave(&de->lock, flags);
1020 spin_unlock_irqrestore(&de->lock, flags);
1025 de->media_timer.expires = jiffies + DE_TIMER_NO_LINK;
1026 add_timer(&de->media_timer);
1028 if (netif_msg_timer(de))
1029 dev_info(&dev->dev, "no link, trying media %s, status %x\n",
1030 media_name[de->media_type], status);
1033 static unsigned int de_ok_to_advertise (struct de_private *de, u32 new_media)
1035 switch (new_media) {
1036 case DE_MEDIA_TP_AUTO:
1037 if (!(de->media_advertise & ADVERTISED_Autoneg))
1039 if (!(de->media_advertise & (ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full)))
1043 if (!(de->media_advertise & ADVERTISED_BNC))
1047 if (!(de->media_advertise & ADVERTISED_AUI))
1051 if (!(de->media_advertise & ADVERTISED_10baseT_Half))
1054 case DE_MEDIA_TP_FD:
1055 if (!(de->media_advertise & ADVERTISED_10baseT_Full))
1063 static void de21041_media_timer (unsigned long data)
1065 struct de_private *de = (struct de_private *) data;
1066 struct net_device *dev = de->dev;
1067 u32 status = dr32(SIAStatus);
1068 unsigned int carrier;
1069 unsigned long flags;
1071 /* clear port active bits */
1072 dw32(SIAStatus, NonselPortActive | SelPortActive);
1074 carrier = (status & NetCxnErr) ? 0 : 1;
1077 if ((de->media_type == DE_MEDIA_TP_AUTO ||
1078 de->media_type == DE_MEDIA_TP ||
1079 de->media_type == DE_MEDIA_TP_FD) &&
1080 (status & LinkFailStatus))
1083 de->media_timer.expires = jiffies + DE_TIMER_LINK;
1084 add_timer(&de->media_timer);
1085 if (!netif_carrier_ok(dev))
1088 if (netif_msg_timer(de))
1090 "%s link ok, mode %x status %x\n",
1091 media_name[de->media_type],
1092 dr32(MacMode), status);
1098 /* if media type locked, don't switch media */
1102 /* if activity detected, use that as hint for new media type */
1103 if (status & NonselPortActive) {
1104 unsigned int have_media = 1;
1106 /* if AUI/BNC selected, then activity is on TP port */
1107 if (de->media_type == DE_MEDIA_AUI ||
1108 de->media_type == DE_MEDIA_BNC) {
1109 if (de_ok_to_advertise(de, DE_MEDIA_TP_AUTO))
1110 de->media_type = DE_MEDIA_TP_AUTO;
1115 /* TP selected. If there is only TP and BNC, then it's BNC */
1116 else if (((de->media_supported & DE_AUI_BNC) == SUPPORTED_BNC) &&
1117 de_ok_to_advertise(de, DE_MEDIA_BNC))
1118 de->media_type = DE_MEDIA_BNC;
1120 /* TP selected. If there is only TP and AUI, then it's AUI */
1121 else if (((de->media_supported & DE_AUI_BNC) == SUPPORTED_AUI) &&
1122 de_ok_to_advertise(de, DE_MEDIA_AUI))
1123 de->media_type = DE_MEDIA_AUI;
1125 /* otherwise, ignore the hint */
1134 * Absent or ambiguous activity hint, move to next advertised
1135 * media state. If de->media_type is left unchanged, this
1136 * simply resets the PHY and reloads the current media settings.
1138 if (de->media_type == DE_MEDIA_AUI) {
1139 u32 next_states[] = { DE_MEDIA_BNC, DE_MEDIA_TP_AUTO };
1140 de_next_media(de, next_states, ARRAY_SIZE(next_states));
1141 } else if (de->media_type == DE_MEDIA_BNC) {
1142 u32 next_states[] = { DE_MEDIA_TP_AUTO, DE_MEDIA_AUI };
1143 de_next_media(de, next_states, ARRAY_SIZE(next_states));
1145 u32 next_states[] = { DE_MEDIA_AUI, DE_MEDIA_BNC, DE_MEDIA_TP_AUTO };
1146 de_next_media(de, next_states, ARRAY_SIZE(next_states));
1150 spin_lock_irqsave(&de->lock, flags);
1152 spin_unlock_irqrestore(&de->lock, flags);
1157 de->media_timer.expires = jiffies + DE_TIMER_NO_LINK;
1158 add_timer(&de->media_timer);
1160 if (netif_msg_timer(de))
1161 dev_info(&dev->dev, "no link, trying media %s, status %x\n",
1162 media_name[de->media_type], status);
1165 static void de_media_interrupt (struct de_private *de, u32 status)
1167 if (status & LinkPass) {
1168 /* Ignore if current media is AUI or BNC and we can't use TP */
1169 if ((de->media_type == DE_MEDIA_AUI ||
1170 de->media_type == DE_MEDIA_BNC) &&
1172 !de_ok_to_advertise(de, DE_MEDIA_TP_AUTO)))
1174 /* If current media is not TP, change it to TP */
1175 if ((de->media_type == DE_MEDIA_AUI ||
1176 de->media_type == DE_MEDIA_BNC)) {
1177 de->media_type = DE_MEDIA_TP_AUTO;
1183 mod_timer(&de->media_timer, jiffies + DE_TIMER_LINK);
1187 BUG_ON(!(status & LinkFail));
1188 /* Mark the link as down only if current media is TP */
1189 if (netif_carrier_ok(de->dev) && de->media_type != DE_MEDIA_AUI &&
1190 de->media_type != DE_MEDIA_BNC) {
1192 mod_timer(&de->media_timer, jiffies + DE_TIMER_NO_LINK);
1196 static int de_reset_mac (struct de_private *de)
1201 * Reset MAC. de4x5.c and tulip.c examined for "advice"
1205 if (dr32(BusMode) == 0xffffffff)
1208 /* Reset the chip, holding bit 0 set at least 50 PCI cycles. */
1209 dw32 (BusMode, CmdReset);
1212 dw32 (BusMode, de_bus_mode);
1215 for (tmp = 0; tmp < 5; tmp++) {
1222 status = dr32(MacStatus);
1223 if (status & (RxState | TxState))
1225 if (status == 0xffffffff)
1230 static void de_adapter_wake (struct de_private *de)
1237 pci_read_config_dword(de->pdev, PCIPM, &pmctl);
1238 if (pmctl & PM_Mask) {
1240 pci_write_config_dword(de->pdev, PCIPM, pmctl);
1242 /* de4x5.c delays, so we do too */
1247 static void de_adapter_sleep (struct de_private *de)
1254 dw32(CSR13, 0); /* Reset phy */
1255 pci_read_config_dword(de->pdev, PCIPM, &pmctl);
1257 pci_write_config_dword(de->pdev, PCIPM, pmctl);
1260 static int de_init_hw (struct de_private *de)
1262 struct net_device *dev = de->dev;
1266 de_adapter_wake(de);
1268 macmode = dr32(MacMode) & ~MacModeClear;
1270 rc = de_reset_mac(de);
1274 de_set_media(de); /* reset phy */
1276 dw32(RxRingAddr, de->ring_dma);
1277 dw32(TxRingAddr, de->ring_dma + (sizeof(struct de_desc) * DE_RX_RING_SIZE));
1279 dw32(MacMode, RxTx | macmode);
1281 dr32(RxMissed); /* self-clearing */
1283 dw32(IntrMask, de_intr_mask);
1285 de_set_rx_mode(dev);
1290 static int de_refill_rx (struct de_private *de)
1294 for (i = 0; i < DE_RX_RING_SIZE; i++) {
1295 struct sk_buff *skb;
1297 skb = dev_alloc_skb(de->rx_buf_sz);
1303 de->rx_skb[i].mapping = pci_map_single(de->pdev,
1304 skb->data, de->rx_buf_sz, PCI_DMA_FROMDEVICE);
1305 de->rx_skb[i].skb = skb;
1307 de->rx_ring[i].opts1 = cpu_to_le32(DescOwn);
1308 if (i == (DE_RX_RING_SIZE - 1))
1309 de->rx_ring[i].opts2 =
1310 cpu_to_le32(RingEnd | de->rx_buf_sz);
1312 de->rx_ring[i].opts2 = cpu_to_le32(de->rx_buf_sz);
1313 de->rx_ring[i].addr1 = cpu_to_le32(de->rx_skb[i].mapping);
1314 de->rx_ring[i].addr2 = 0;
1324 static int de_init_rings (struct de_private *de)
1326 memset(de->tx_ring, 0, sizeof(struct de_desc) * DE_TX_RING_SIZE);
1327 de->tx_ring[DE_TX_RING_SIZE - 1].opts2 = cpu_to_le32(RingEnd);
1330 de->tx_head = de->tx_tail = 0;
1332 return de_refill_rx (de);
1335 static int de_alloc_rings (struct de_private *de)
1337 de->rx_ring = pci_alloc_consistent(de->pdev, DE_RING_BYTES, &de->ring_dma);
1340 de->tx_ring = &de->rx_ring[DE_RX_RING_SIZE];
1341 return de_init_rings(de);
1344 static void de_clean_rings (struct de_private *de)
1348 memset(de->rx_ring, 0, sizeof(struct de_desc) * DE_RX_RING_SIZE);
1349 de->rx_ring[DE_RX_RING_SIZE - 1].opts2 = cpu_to_le32(RingEnd);
1351 memset(de->tx_ring, 0, sizeof(struct de_desc) * DE_TX_RING_SIZE);
1352 de->tx_ring[DE_TX_RING_SIZE - 1].opts2 = cpu_to_le32(RingEnd);
1355 for (i = 0; i < DE_RX_RING_SIZE; i++) {
1356 if (de->rx_skb[i].skb) {
1357 pci_unmap_single(de->pdev, de->rx_skb[i].mapping,
1358 de->rx_buf_sz, PCI_DMA_FROMDEVICE);
1359 dev_kfree_skb(de->rx_skb[i].skb);
1363 for (i = 0; i < DE_TX_RING_SIZE; i++) {
1364 struct sk_buff *skb = de->tx_skb[i].skb;
1365 if ((skb) && (skb != DE_DUMMY_SKB)) {
1366 if (skb != DE_SETUP_SKB) {
1367 de->net_stats.tx_dropped++;
1368 pci_unmap_single(de->pdev,
1369 de->tx_skb[i].mapping,
1370 skb->len, PCI_DMA_TODEVICE);
1373 pci_unmap_single(de->pdev,
1374 de->tx_skb[i].mapping,
1375 sizeof(de->setup_frame),
1381 memset(&de->rx_skb, 0, sizeof(struct ring_info) * DE_RX_RING_SIZE);
1382 memset(&de->tx_skb, 0, sizeof(struct ring_info) * DE_TX_RING_SIZE);
1385 static void de_free_rings (struct de_private *de)
1388 pci_free_consistent(de->pdev, DE_RING_BYTES, de->rx_ring, de->ring_dma);
1393 static int de_open (struct net_device *dev)
1395 struct de_private *de = netdev_priv(dev);
1398 if (netif_msg_ifup(de))
1399 printk(KERN_DEBUG "%s: enabling interface\n", dev->name);
1401 de->rx_buf_sz = (dev->mtu <= 1500 ? PKT_BUF_SZ : dev->mtu + 32);
1403 rc = de_alloc_rings(de);
1405 dev_err(&dev->dev, "ring allocation failure, err=%d\n", rc);
1411 rc = request_irq(dev->irq, de_interrupt, IRQF_SHARED, dev->name, dev);
1413 dev_err(&dev->dev, "IRQ %d request failure, err=%d\n",
1418 rc = de_init_hw(de);
1420 dev_err(&dev->dev, "h/w init failure, err=%d\n", rc);
1421 goto err_out_free_irq;
1424 netif_start_queue(dev);
1425 mod_timer(&de->media_timer, jiffies + DE_TIMER_NO_LINK);
1430 free_irq(dev->irq, dev);
1436 static int de_close (struct net_device *dev)
1438 struct de_private *de = netdev_priv(dev);
1439 unsigned long flags;
1441 if (netif_msg_ifdown(de))
1442 printk(KERN_DEBUG "%s: disabling interface\n", dev->name);
1444 del_timer_sync(&de->media_timer);
1446 spin_lock_irqsave(&de->lock, flags);
1448 netif_stop_queue(dev);
1449 netif_carrier_off(dev);
1450 spin_unlock_irqrestore(&de->lock, flags);
1452 free_irq(dev->irq, dev);
1455 de_adapter_sleep(de);
1459 static void de_tx_timeout (struct net_device *dev)
1461 struct de_private *de = netdev_priv(dev);
1463 printk(KERN_DEBUG "%s: NIC status %08x mode %08x sia %08x desc %u/%u/%u\n",
1464 dev->name, dr32(MacStatus), dr32(MacMode), dr32(SIAStatus),
1465 de->rx_tail, de->tx_head, de->tx_tail);
1467 del_timer_sync(&de->media_timer);
1469 disable_irq(dev->irq);
1470 spin_lock_irq(&de->lock);
1473 netif_stop_queue(dev);
1474 netif_carrier_off(dev);
1476 spin_unlock_irq(&de->lock);
1477 enable_irq(dev->irq);
1479 /* Update the error counts. */
1482 synchronize_irq(dev->irq);
1489 netif_wake_queue(dev);
1492 static void __de_get_regs(struct de_private *de, u8 *buf)
1495 u32 *rbuf = (u32 *)buf;
1498 for (i = 0; i < DE_NUM_REGS; i++)
1499 rbuf[i] = dr32(i * 8);
1501 /* handle self-clearing RxMissed counter, CSR8 */
1502 de_rx_missed(de, rbuf[8]);
1505 static int __de_get_settings(struct de_private *de, struct ethtool_cmd *ecmd)
1507 ecmd->supported = de->media_supported;
1508 ecmd->transceiver = XCVR_INTERNAL;
1509 ecmd->phy_address = 0;
1510 ecmd->advertising = de->media_advertise;
1512 switch (de->media_type) {
1514 ecmd->port = PORT_AUI;
1518 ecmd->port = PORT_BNC;
1522 ecmd->port = PORT_TP;
1523 ecmd->speed = SPEED_10;
1527 if (dr32(MacMode) & FullDuplex)
1528 ecmd->duplex = DUPLEX_FULL;
1530 ecmd->duplex = DUPLEX_HALF;
1533 ecmd->autoneg = AUTONEG_DISABLE;
1535 ecmd->autoneg = AUTONEG_ENABLE;
1537 /* ignore maxtxpkt, maxrxpkt for now */
1542 static int __de_set_settings(struct de_private *de, struct ethtool_cmd *ecmd)
1545 unsigned int media_lock;
1547 if (ecmd->speed != SPEED_10 && ecmd->speed != 5 && ecmd->speed != 2)
1549 if (de->de21040 && ecmd->speed == 2)
1551 if (ecmd->duplex != DUPLEX_HALF && ecmd->duplex != DUPLEX_FULL)
1553 if (ecmd->port != PORT_TP && ecmd->port != PORT_AUI && ecmd->port != PORT_BNC)
1555 if (de->de21040 && ecmd->port == PORT_BNC)
1557 if (ecmd->transceiver != XCVR_INTERNAL)
1559 if (ecmd->autoneg != AUTONEG_DISABLE && ecmd->autoneg != AUTONEG_ENABLE)
1561 if (ecmd->advertising & ~de->media_supported)
1563 if (ecmd->autoneg == AUTONEG_ENABLE &&
1564 (!(ecmd->advertising & ADVERTISED_Autoneg)))
1567 switch (ecmd->port) {
1569 new_media = DE_MEDIA_AUI;
1570 if (!(ecmd->advertising & ADVERTISED_AUI))
1574 new_media = DE_MEDIA_BNC;
1575 if (!(ecmd->advertising & ADVERTISED_BNC))
1579 if (ecmd->autoneg == AUTONEG_ENABLE)
1580 new_media = DE_MEDIA_TP_AUTO;
1581 else if (ecmd->duplex == DUPLEX_FULL)
1582 new_media = DE_MEDIA_TP_FD;
1584 new_media = DE_MEDIA_TP;
1585 if (!(ecmd->advertising & ADVERTISED_TP))
1587 if (!(ecmd->advertising & (ADVERTISED_10baseT_Full | ADVERTISED_10baseT_Half)))
1592 media_lock = (ecmd->autoneg == AUTONEG_ENABLE) ? 0 : 1;
1594 if ((new_media == de->media_type) &&
1595 (media_lock == de->media_lock) &&
1596 (ecmd->advertising == de->media_advertise))
1597 return 0; /* nothing to change */
1600 mod_timer(&de->media_timer, jiffies + DE_TIMER_NO_LINK);
1603 de->media_type = new_media;
1604 de->media_lock = media_lock;
1605 de->media_advertise = ecmd->advertising;
1607 if (netif_running(de->dev))
1613 static void de_get_drvinfo (struct net_device *dev,struct ethtool_drvinfo *info)
1615 struct de_private *de = netdev_priv(dev);
1617 strcpy (info->driver, DRV_NAME);
1618 strcpy (info->version, DRV_VERSION);
1619 strcpy (info->bus_info, pci_name(de->pdev));
1620 info->eedump_len = DE_EEPROM_SIZE;
1623 static int de_get_regs_len(struct net_device *dev)
1625 return DE_REGS_SIZE;
1628 static int de_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
1630 struct de_private *de = netdev_priv(dev);
1633 spin_lock_irq(&de->lock);
1634 rc = __de_get_settings(de, ecmd);
1635 spin_unlock_irq(&de->lock);
1640 static int de_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
1642 struct de_private *de = netdev_priv(dev);
1645 spin_lock_irq(&de->lock);
1646 rc = __de_set_settings(de, ecmd);
1647 spin_unlock_irq(&de->lock);
1652 static u32 de_get_msglevel(struct net_device *dev)
1654 struct de_private *de = netdev_priv(dev);
1656 return de->msg_enable;
1659 static void de_set_msglevel(struct net_device *dev, u32 msglvl)
1661 struct de_private *de = netdev_priv(dev);
1663 de->msg_enable = msglvl;
1666 static int de_get_eeprom(struct net_device *dev,
1667 struct ethtool_eeprom *eeprom, u8 *data)
1669 struct de_private *de = netdev_priv(dev);
1673 if ((eeprom->offset != 0) || (eeprom->magic != 0) ||
1674 (eeprom->len != DE_EEPROM_SIZE))
1676 memcpy(data, de->ee_data, eeprom->len);
1681 static int de_nway_reset(struct net_device *dev)
1683 struct de_private *de = netdev_priv(dev);
1686 if (de->media_type != DE_MEDIA_TP_AUTO)
1688 if (netif_carrier_ok(de->dev))
1691 status = dr32(SIAStatus);
1692 dw32(SIAStatus, (status & ~NWayState) | NWayRestart);
1693 if (netif_msg_link(de))
1694 dev_info(&de->dev->dev, "link nway restart, status %x,%x\n",
1695 status, dr32(SIAStatus));
1699 static void de_get_regs(struct net_device *dev, struct ethtool_regs *regs,
1702 struct de_private *de = netdev_priv(dev);
1704 regs->version = (DE_REGS_VER << 2) | de->de21040;
1706 spin_lock_irq(&de->lock);
1707 __de_get_regs(de, data);
1708 spin_unlock_irq(&de->lock);
1711 static const struct ethtool_ops de_ethtool_ops = {
1712 .get_link = ethtool_op_get_link,
1713 .get_drvinfo = de_get_drvinfo,
1714 .get_regs_len = de_get_regs_len,
1715 .get_settings = de_get_settings,
1716 .set_settings = de_set_settings,
1717 .get_msglevel = de_get_msglevel,
1718 .set_msglevel = de_set_msglevel,
1719 .get_eeprom = de_get_eeprom,
1720 .nway_reset = de_nway_reset,
1721 .get_regs = de_get_regs,
1724 static void __devinit de21040_get_mac_address (struct de_private *de)
1728 dw32 (ROMCmd, 0); /* Reset the pointer with a dummy write. */
1731 for (i = 0; i < 6; i++) {
1732 int value, boguscnt = 100000;
1734 value = dr32(ROMCmd);
1736 } while (value < 0 && --boguscnt > 0);
1737 de->dev->dev_addr[i] = value;
1740 pr_warning(PFX "timeout reading 21040 MAC address byte %u\n", i);
1744 static void __devinit de21040_get_media_info(struct de_private *de)
1748 de->media_type = DE_MEDIA_TP;
1749 de->media_supported |= SUPPORTED_TP | SUPPORTED_10baseT_Full |
1750 SUPPORTED_10baseT_Half | SUPPORTED_AUI;
1751 de->media_advertise = de->media_supported;
1753 for (i = 0; i < DE_MAX_MEDIA; i++) {
1757 case DE_MEDIA_TP_FD:
1758 de->media[i].type = i;
1759 de->media[i].csr13 = t21040_csr13[i];
1760 de->media[i].csr14 = t21040_csr14[i];
1761 de->media[i].csr15 = t21040_csr15[i];
1764 de->media[i].type = DE_MEDIA_INVALID;
1770 /* Note: this routine returns extra data bits for size detection. */
1771 static unsigned __devinit tulip_read_eeprom(void __iomem *regs, int location, int addr_len)
1774 unsigned retval = 0;
1775 void __iomem *ee_addr = regs + ROMCmd;
1776 int read_cmd = location | (EE_READ_CMD << addr_len);
1778 writel(EE_ENB & ~EE_CS, ee_addr);
1779 writel(EE_ENB, ee_addr);
1781 /* Shift the read command bits out. */
1782 for (i = 4 + addr_len; i >= 0; i--) {
1783 short dataval = (read_cmd & (1 << i)) ? EE_DATA_WRITE : 0;
1784 writel(EE_ENB | dataval, ee_addr);
1786 writel(EE_ENB | dataval | EE_SHIFT_CLK, ee_addr);
1788 retval = (retval << 1) | ((readl(ee_addr) & EE_DATA_READ) ? 1 : 0);
1790 writel(EE_ENB, ee_addr);
1793 for (i = 16; i > 0; i--) {
1794 writel(EE_ENB | EE_SHIFT_CLK, ee_addr);
1796 retval = (retval << 1) | ((readl(ee_addr) & EE_DATA_READ) ? 1 : 0);
1797 writel(EE_ENB, ee_addr);
1801 /* Terminate the EEPROM access. */
1802 writel(EE_ENB & ~EE_CS, ee_addr);
1806 static void __devinit de21041_get_srom_info (struct de_private *de)
1808 unsigned i, sa_offset = 0, ofs;
1809 u8 ee_data[DE_EEPROM_SIZE + 6] = {};
1810 unsigned ee_addr_size = tulip_read_eeprom(de->regs, 0xff, 8) & 0x40000 ? 8 : 6;
1811 struct de_srom_info_leaf *il;
1814 /* download entire eeprom */
1815 for (i = 0; i < DE_EEPROM_WORDS; i++)
1816 ((__le16 *)ee_data)[i] =
1817 cpu_to_le16(tulip_read_eeprom(de->regs, i, ee_addr_size));
1819 /* DEC now has a specification but early board makers
1820 just put the address in the first EEPROM locations. */
1821 /* This does memcmp(eedata, eedata+16, 8) */
1823 #ifndef CONFIG_MIPS_COBALT
1825 for (i = 0; i < 8; i ++)
1826 if (ee_data[i] != ee_data[16+i])
1831 /* store MAC address */
1832 for (i = 0; i < 6; i ++)
1833 de->dev->dev_addr[i] = ee_data[i + sa_offset];
1835 /* get offset of controller 0 info leaf. ignore 2nd byte. */
1836 ofs = ee_data[SROMC0InfoLeaf];
1837 if (ofs >= (sizeof(ee_data) - sizeof(struct de_srom_info_leaf) - sizeof(struct de_srom_media_block)))
1840 /* get pointer to info leaf */
1841 il = (struct de_srom_info_leaf *) &ee_data[ofs];
1843 /* paranoia checks */
1844 if (il->n_blocks == 0)
1846 if ((sizeof(ee_data) - ofs) <
1847 (sizeof(struct de_srom_info_leaf) + (sizeof(struct de_srom_media_block) * il->n_blocks)))
1850 /* get default media type */
1851 switch (get_unaligned(&il->default_media)) {
1852 case 0x0001: de->media_type = DE_MEDIA_BNC; break;
1853 case 0x0002: de->media_type = DE_MEDIA_AUI; break;
1854 case 0x0204: de->media_type = DE_MEDIA_TP_FD; break;
1855 default: de->media_type = DE_MEDIA_TP_AUTO; break;
1858 if (netif_msg_probe(de))
1859 pr_info("de%d: SROM leaf offset %u, default media %s\n",
1860 de->board_idx, ofs, media_name[de->media_type]);
1862 /* init SIA register values to defaults */
1863 for (i = 0; i < DE_MAX_MEDIA; i++) {
1864 de->media[i].type = DE_MEDIA_INVALID;
1865 de->media[i].csr13 = 0xffff;
1866 de->media[i].csr14 = 0xffff;
1867 de->media[i].csr15 = 0xffff;
1870 /* parse media blocks to see what medias are supported,
1871 * and if any custom CSR values are provided
1873 bufp = ((void *)il) + sizeof(*il);
1874 for (i = 0; i < il->n_blocks; i++) {
1875 struct de_srom_media_block *ib = bufp;
1878 /* index based on media type in media block */
1879 switch(ib->opts & MediaBlockMask) {
1880 case 0: /* 10baseT */
1881 de->media_supported |= SUPPORTED_TP | SUPPORTED_10baseT_Half
1882 | SUPPORTED_Autoneg;
1884 de->media[DE_MEDIA_TP_AUTO].type = DE_MEDIA_TP_AUTO;
1887 de->media_supported |= SUPPORTED_BNC;
1891 de->media_supported |= SUPPORTED_AUI;
1894 case 4: /* 10baseT-FD */
1895 de->media_supported |= SUPPORTED_TP | SUPPORTED_10baseT_Full
1896 | SUPPORTED_Autoneg;
1897 idx = DE_MEDIA_TP_FD;
1898 de->media[DE_MEDIA_TP_AUTO].type = DE_MEDIA_TP_AUTO;
1904 de->media[idx].type = idx;
1906 if (netif_msg_probe(de))
1907 pr_info("de%d: media block #%u: %s",
1909 media_name[de->media[idx].type]);
1911 bufp += sizeof (ib->opts);
1913 if (ib->opts & MediaCustomCSRs) {
1914 de->media[idx].csr13 = get_unaligned(&ib->csr13);
1915 de->media[idx].csr14 = get_unaligned(&ib->csr14);
1916 de->media[idx].csr15 = get_unaligned(&ib->csr15);
1917 bufp += sizeof(ib->csr13) + sizeof(ib->csr14) +
1920 if (netif_msg_probe(de))
1921 pr_cont(" (%x,%x,%x)\n",
1922 de->media[idx].csr13,
1923 de->media[idx].csr14,
1924 de->media[idx].csr15);
1926 } else if (netif_msg_probe(de))
1929 if (bufp > ((void *)&ee_data[DE_EEPROM_SIZE - 3]))
1933 de->media_advertise = de->media_supported;
1936 /* fill in defaults, for cases where custom CSRs not used */
1937 for (i = 0; i < DE_MAX_MEDIA; i++) {
1938 if (de->media[i].csr13 == 0xffff)
1939 de->media[i].csr13 = t21041_csr13[i];
1940 if (de->media[i].csr14 == 0xffff) {
1941 /* autonegotiation is broken at least on some chip
1942 revisions - rev. 0x21 works, 0x11 does not */
1943 if (de->pdev->revision < 0x20)
1944 de->media[i].csr14 = t21041_csr14_brk[i];
1946 de->media[i].csr14 = t21041_csr14[i];
1948 if (de->media[i].csr15 == 0xffff)
1949 de->media[i].csr15 = t21041_csr15[i];
1952 de->ee_data = kmemdup(&ee_data[0], DE_EEPROM_SIZE, GFP_KERNEL);
1957 /* for error cases, it's ok to assume we support all these */
1958 for (i = 0; i < DE_MAX_MEDIA; i++)
1959 de->media[i].type = i;
1960 de->media_supported =
1961 SUPPORTED_10baseT_Half |
1962 SUPPORTED_10baseT_Full |
1970 static const struct net_device_ops de_netdev_ops = {
1971 .ndo_open = de_open,
1972 .ndo_stop = de_close,
1973 .ndo_set_multicast_list = de_set_rx_mode,
1974 .ndo_start_xmit = de_start_xmit,
1975 .ndo_get_stats = de_get_stats,
1976 .ndo_tx_timeout = de_tx_timeout,
1977 .ndo_change_mtu = eth_change_mtu,
1978 .ndo_set_mac_address = eth_mac_addr,
1979 .ndo_validate_addr = eth_validate_addr,
1982 static int __devinit de_init_one (struct pci_dev *pdev,
1983 const struct pci_device_id *ent)
1985 struct net_device *dev;
1986 struct de_private *de;
1989 unsigned long pciaddr;
1990 static int board_idx = -1;
1996 printk("%s", version);
1999 /* allocate a new ethernet device structure, and fill in defaults */
2000 dev = alloc_etherdev(sizeof(struct de_private));
2004 dev->netdev_ops = &de_netdev_ops;
2005 SET_NETDEV_DEV(dev, &pdev->dev);
2006 dev->ethtool_ops = &de_ethtool_ops;
2007 dev->watchdog_timeo = TX_TIMEOUT;
2009 de = netdev_priv(dev);
2010 de->de21040 = ent->driver_data == 0 ? 1 : 0;
2013 de->msg_enable = (debug < 0 ? DE_DEF_MSG_ENABLE : debug);
2014 de->board_idx = board_idx;
2015 spin_lock_init (&de->lock);
2016 init_timer(&de->media_timer);
2018 de->media_timer.function = de21040_media_timer;
2020 de->media_timer.function = de21041_media_timer;
2021 de->media_timer.data = (unsigned long) de;
2023 netif_carrier_off(dev);
2025 /* wake up device, assign resources */
2026 rc = pci_enable_device(pdev);
2030 /* reserve PCI resources to ensure driver atomicity */
2031 rc = pci_request_regions(pdev, DRV_NAME);
2033 goto err_out_disable;
2035 /* check for invalid IRQ value */
2036 if (pdev->irq < 2) {
2038 pr_err(PFX "invalid irq (%d) for pci dev %s\n",
2039 pdev->irq, pci_name(pdev));
2043 dev->irq = pdev->irq;
2045 /* obtain and check validity of PCI I/O address */
2046 pciaddr = pci_resource_start(pdev, 1);
2049 pr_err(PFX "no MMIO resource for pci dev %s\n", pci_name(pdev));
2052 if (pci_resource_len(pdev, 1) < DE_REGS_SIZE) {
2054 pr_err(PFX "MMIO resource (%llx) too small on pci dev %s\n",
2055 (unsigned long long)pci_resource_len(pdev, 1),
2060 /* remap CSR registers */
2061 regs = ioremap_nocache(pciaddr, DE_REGS_SIZE);
2064 pr_err(PFX "Cannot map PCI MMIO (%llx@%lx) on pci dev %s\n",
2065 (unsigned long long)pci_resource_len(pdev, 1),
2066 pciaddr, pci_name(pdev));
2069 dev->base_addr = (unsigned long) regs;
2072 de_adapter_wake(de);
2074 /* make sure hardware is not running */
2075 rc = de_reset_mac(de);
2077 pr_err(PFX "Cannot reset MAC, pci dev %s\n", pci_name(pdev));
2081 /* get MAC address, initialize default media type and
2082 * get list of supported media
2085 de21040_get_mac_address(de);
2086 de21040_get_media_info(de);
2088 de21041_get_srom_info(de);
2091 /* register new network interface with kernel */
2092 rc = register_netdev(dev);
2096 /* print info about board and interface just registered */
2097 dev_info(&dev->dev, "%s at 0x%lx, %pM, IRQ %d\n",
2098 de->de21040 ? "21040" : "21041",
2103 pci_set_drvdata(pdev, dev);
2105 /* enable busmastering */
2106 pci_set_master(pdev);
2108 /* put adapter to sleep */
2109 de_adapter_sleep(de);
2117 pci_release_regions(pdev);
2119 pci_disable_device(pdev);
2125 static void __devexit de_remove_one (struct pci_dev *pdev)
2127 struct net_device *dev = pci_get_drvdata(pdev);
2128 struct de_private *de = netdev_priv(dev);
2131 unregister_netdev(dev);
2134 pci_release_regions(pdev);
2135 pci_disable_device(pdev);
2136 pci_set_drvdata(pdev, NULL);
2142 static int de_suspend (struct pci_dev *pdev, pm_message_t state)
2144 struct net_device *dev = pci_get_drvdata (pdev);
2145 struct de_private *de = netdev_priv(dev);
2148 if (netif_running (dev)) {
2149 del_timer_sync(&de->media_timer);
2151 disable_irq(dev->irq);
2152 spin_lock_irq(&de->lock);
2155 netif_stop_queue(dev);
2156 netif_device_detach(dev);
2157 netif_carrier_off(dev);
2159 spin_unlock_irq(&de->lock);
2160 enable_irq(dev->irq);
2162 /* Update the error counts. */
2165 synchronize_irq(dev->irq);
2168 de_adapter_sleep(de);
2169 pci_disable_device(pdev);
2171 netif_device_detach(dev);
2177 static int de_resume (struct pci_dev *pdev)
2179 struct net_device *dev = pci_get_drvdata (pdev);
2180 struct de_private *de = netdev_priv(dev);
2184 if (netif_device_present(dev))
2186 if (!netif_running(dev))
2188 if ((retval = pci_enable_device(pdev))) {
2189 dev_err(&dev->dev, "pci_enable_device failed in resume\n");
2192 pci_set_master(pdev);
2196 netif_device_attach(dev);
2202 #endif /* CONFIG_PM */
2204 static struct pci_driver de_driver = {
2206 .id_table = de_pci_tbl,
2207 .probe = de_init_one,
2208 .remove = __devexit_p(de_remove_one),
2210 .suspend = de_suspend,
2211 .resume = de_resume,
2215 static int __init de_init (void)
2218 printk("%s", version);
2220 return pci_register_driver(&de_driver);
2223 static void __exit de_exit (void)
2225 pci_unregister_driver (&de_driver);
2228 module_init(de_init);
2229 module_exit(de_exit);