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 LinkFailStatus = (1 << 2),
247 NetCxnErr = (1 << 1),
250 static const u32 de_intr_mask =
251 IntrOK | IntrErr | RxIntr | RxEmpty | TxIntr | TxEmpty |
252 LinkPass | LinkFail | PciErr;
255 * Set the programmable burst length to 4 longwords for all:
256 * DMA errors result without these values. Cache align 16 long.
258 static const u32 de_bus_mode = CacheAlign16 | BurstLen4 | DescSkipLen;
260 struct de_srom_media_block {
267 struct de_srom_info_leaf {
284 u16 type; /* DE_MEDIA_xxx */
301 struct net_device *dev;
304 struct de_desc *rx_ring;
305 struct de_desc *tx_ring;
306 struct ring_info tx_skb[DE_TX_RING_SIZE];
307 struct ring_info rx_skb[DE_RX_RING_SIZE];
313 struct net_device_stats net_stats;
315 struct pci_dev *pdev;
317 u16 setup_frame[DE_SETUP_FRAME_WORDS];
322 struct media_info media[DE_MAX_MEDIA];
323 struct timer_list media_timer;
327 unsigned de21040 : 1;
328 unsigned media_lock : 1;
332 static void de_set_rx_mode (struct net_device *dev);
333 static void de_tx (struct de_private *de);
334 static void de_clean_rings (struct de_private *de);
335 static void de_media_interrupt (struct de_private *de, u32 status);
336 static void de21040_media_timer (unsigned long data);
337 static void de21041_media_timer (unsigned long data);
338 static unsigned int de_ok_to_advertise (struct de_private *de, u32 new_media);
341 static DEFINE_PCI_DEVICE_TABLE(de_pci_tbl) = {
342 { PCI_VENDOR_ID_DEC, PCI_DEVICE_ID_DEC_TULIP,
343 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
344 { PCI_VENDOR_ID_DEC, PCI_DEVICE_ID_DEC_TULIP_PLUS,
345 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1 },
348 MODULE_DEVICE_TABLE(pci, de_pci_tbl);
350 static const char * const media_name[DE_MAX_MEDIA] = {
358 /* 21040 transceiver register settings:
359 * TP AUTO(unused), BNC(unused), AUI, TP, TP FD*/
360 static u16 t21040_csr13[] = { 0, 0, 0x8F09, 0x8F01, 0x8F01, };
361 static u16 t21040_csr14[] = { 0, 0, 0x0705, 0xFFFF, 0xFFFD, };
362 static u16 t21040_csr15[] = { 0, 0, 0x0006, 0x0000, 0x0000, };
364 /* 21041 transceiver register settings: TP AUTO, BNC, AUI, TP, TP FD*/
365 static u16 t21041_csr13[] = { 0xEF01, 0xEF09, 0xEF09, 0xEF01, 0xEF09, };
366 static u16 t21041_csr14[] = { 0xFFFF, 0xF7FD, 0xF7FD, 0x6F3F, 0x6F3D, };
367 /* If on-chip autonegotiation is broken, use half-duplex (FF3F) instead */
368 static u16 t21041_csr14_brk[] = { 0xFF3F, 0xF7FD, 0xF7FD, 0x6F3F, 0x6F3D, };
369 static u16 t21041_csr15[] = { 0x0008, 0x0006, 0x000E, 0x0008, 0x0008, };
372 #define dr32(reg) ioread32(de->regs + (reg))
373 #define dw32(reg, val) iowrite32((val), de->regs + (reg))
376 static void de_rx_err_acct (struct de_private *de, unsigned rx_tail,
379 if (netif_msg_rx_err (de))
381 "%s: rx err, slot %d status 0x%x len %d\n",
382 de->dev->name, rx_tail, status, len);
384 if ((status & 0x38000300) != 0x0300) {
385 /* Ingore earlier buffers. */
386 if ((status & 0xffff) != 0x7fff) {
387 if (netif_msg_rx_err(de))
388 dev_warn(&de->dev->dev,
389 "Oversized Ethernet frame spanned multiple buffers, status %08x!\n",
391 de->net_stats.rx_length_errors++;
393 } else if (status & RxError) {
394 /* There was a fatal error. */
395 de->net_stats.rx_errors++; /* end of a packet.*/
396 if (status & 0x0890) de->net_stats.rx_length_errors++;
397 if (status & RxErrCRC) de->net_stats.rx_crc_errors++;
398 if (status & RxErrFIFO) de->net_stats.rx_fifo_errors++;
402 static void de_rx (struct de_private *de)
404 unsigned rx_tail = de->rx_tail;
405 unsigned rx_work = DE_RX_RING_SIZE;
412 struct sk_buff *skb, *copy_skb;
413 unsigned copying_skb, buflen;
415 skb = de->rx_skb[rx_tail].skb;
418 status = le32_to_cpu(de->rx_ring[rx_tail].opts1);
419 if (status & DescOwn)
422 len = ((status >> 16) & 0x7ff) - 4;
423 mapping = de->rx_skb[rx_tail].mapping;
425 if (unlikely(drop)) {
426 de->net_stats.rx_dropped++;
430 if (unlikely((status & 0x38008300) != 0x0300)) {
431 de_rx_err_acct(de, rx_tail, status, len);
435 copying_skb = (len <= rx_copybreak);
437 if (unlikely(netif_msg_rx_status(de)))
438 printk(KERN_DEBUG "%s: rx slot %d status 0x%x len %d copying? %d\n",
439 de->dev->name, rx_tail, status, len,
442 buflen = copying_skb ? (len + RX_OFFSET) : de->rx_buf_sz;
443 copy_skb = dev_alloc_skb (buflen);
444 if (unlikely(!copy_skb)) {
445 de->net_stats.rx_dropped++;
452 pci_unmap_single(de->pdev, mapping,
453 buflen, PCI_DMA_FROMDEVICE);
457 de->rx_skb[rx_tail].mapping =
458 pci_map_single(de->pdev, copy_skb->data,
459 buflen, PCI_DMA_FROMDEVICE);
460 de->rx_skb[rx_tail].skb = copy_skb;
462 pci_dma_sync_single_for_cpu(de->pdev, mapping, len, PCI_DMA_FROMDEVICE);
463 skb_reserve(copy_skb, RX_OFFSET);
464 skb_copy_from_linear_data(skb, skb_put(copy_skb, len),
466 pci_dma_sync_single_for_device(de->pdev, mapping, len, PCI_DMA_FROMDEVICE);
468 /* We'll reuse the original ring buffer. */
472 skb->protocol = eth_type_trans (skb, de->dev);
474 de->net_stats.rx_packets++;
475 de->net_stats.rx_bytes += skb->len;
477 if (rc == NET_RX_DROP)
481 if (rx_tail == (DE_RX_RING_SIZE - 1))
482 de->rx_ring[rx_tail].opts2 =
483 cpu_to_le32(RingEnd | de->rx_buf_sz);
485 de->rx_ring[rx_tail].opts2 = cpu_to_le32(de->rx_buf_sz);
486 de->rx_ring[rx_tail].addr1 = cpu_to_le32(mapping);
488 de->rx_ring[rx_tail].opts1 = cpu_to_le32(DescOwn);
489 rx_tail = NEXT_RX(rx_tail);
493 dev_warn(&de->dev->dev, "rx work limit reached\n");
495 de->rx_tail = rx_tail;
498 static irqreturn_t de_interrupt (int irq, void *dev_instance)
500 struct net_device *dev = dev_instance;
501 struct de_private *de = netdev_priv(dev);
504 status = dr32(MacStatus);
505 if ((!(status & (IntrOK|IntrErr))) || (status == 0xFFFF))
508 if (netif_msg_intr(de))
509 printk(KERN_DEBUG "%s: intr, status %08x mode %08x desc %u/%u/%u\n",
510 dev->name, status, dr32(MacMode),
511 de->rx_tail, de->tx_head, de->tx_tail);
513 dw32(MacStatus, status);
515 if (status & (RxIntr | RxEmpty)) {
517 if (status & RxEmpty)
518 dw32(RxPoll, NormalRxPoll);
521 spin_lock(&de->lock);
523 if (status & (TxIntr | TxEmpty))
526 if (status & (LinkPass | LinkFail))
527 de_media_interrupt(de, status);
529 spin_unlock(&de->lock);
531 if (status & PciErr) {
534 pci_read_config_word(de->pdev, PCI_STATUS, &pci_status);
535 pci_write_config_word(de->pdev, PCI_STATUS, pci_status);
536 dev_err(&de->dev->dev,
537 "PCI bus error, status=%08x, PCI status=%04x\n",
544 static void de_tx (struct de_private *de)
546 unsigned tx_head = de->tx_head;
547 unsigned tx_tail = de->tx_tail;
549 while (tx_tail != tx_head) {
554 status = le32_to_cpu(de->tx_ring[tx_tail].opts1);
555 if (status & DescOwn)
558 skb = de->tx_skb[tx_tail].skb;
560 if (unlikely(skb == DE_DUMMY_SKB))
563 if (unlikely(skb == DE_SETUP_SKB)) {
564 pci_unmap_single(de->pdev, de->tx_skb[tx_tail].mapping,
565 sizeof(de->setup_frame), PCI_DMA_TODEVICE);
569 pci_unmap_single(de->pdev, de->tx_skb[tx_tail].mapping,
570 skb->len, PCI_DMA_TODEVICE);
572 if (status & LastFrag) {
573 if (status & TxError) {
574 if (netif_msg_tx_err(de))
575 printk(KERN_DEBUG "%s: tx err, status 0x%x\n",
576 de->dev->name, status);
577 de->net_stats.tx_errors++;
579 de->net_stats.tx_window_errors++;
580 if (status & TxMaxCol)
581 de->net_stats.tx_aborted_errors++;
582 if (status & TxLinkFail)
583 de->net_stats.tx_carrier_errors++;
584 if (status & TxFIFOUnder)
585 de->net_stats.tx_fifo_errors++;
587 de->net_stats.tx_packets++;
588 de->net_stats.tx_bytes += skb->len;
589 if (netif_msg_tx_done(de))
590 printk(KERN_DEBUG "%s: tx done, slot %d\n",
591 de->dev->name, tx_tail);
593 dev_kfree_skb_irq(skb);
597 de->tx_skb[tx_tail].skb = NULL;
599 tx_tail = NEXT_TX(tx_tail);
602 de->tx_tail = tx_tail;
604 if (netif_queue_stopped(de->dev) && (TX_BUFFS_AVAIL(de) > (DE_TX_RING_SIZE / 4)))
605 netif_wake_queue(de->dev);
608 static netdev_tx_t de_start_xmit (struct sk_buff *skb,
609 struct net_device *dev)
611 struct de_private *de = netdev_priv(dev);
612 unsigned int entry, tx_free;
613 u32 mapping, len, flags = FirstFrag | LastFrag;
616 spin_lock_irq(&de->lock);
618 tx_free = TX_BUFFS_AVAIL(de);
620 netif_stop_queue(dev);
621 spin_unlock_irq(&de->lock);
622 return NETDEV_TX_BUSY;
628 txd = &de->tx_ring[entry];
631 mapping = pci_map_single(de->pdev, skb->data, len, PCI_DMA_TODEVICE);
632 if (entry == (DE_TX_RING_SIZE - 1))
634 if (!tx_free || (tx_free == (DE_TX_RING_SIZE / 2)))
637 txd->opts2 = cpu_to_le32(flags);
638 txd->addr1 = cpu_to_le32(mapping);
640 de->tx_skb[entry].skb = skb;
641 de->tx_skb[entry].mapping = mapping;
644 txd->opts1 = cpu_to_le32(DescOwn);
647 de->tx_head = NEXT_TX(entry);
648 if (netif_msg_tx_queued(de))
649 printk(KERN_DEBUG "%s: tx queued, slot %d, skblen %d\n",
650 dev->name, entry, skb->len);
653 netif_stop_queue(dev);
655 spin_unlock_irq(&de->lock);
657 /* Trigger an immediate transmit demand. */
658 dw32(TxPoll, NormalTxPoll);
663 /* Set or clear the multicast filter for this adaptor.
664 Note that we only use exclusion around actually queueing the
665 new frame, not around filling de->setup_frame. This is non-deterministic
666 when re-entered but still correct. */
669 #define set_bit_le(i,p) do { ((char *)(p))[(i)/8] |= (1<<((i)%8)); } while(0)
671 static void build_setup_frame_hash(u16 *setup_frm, struct net_device *dev)
673 struct de_private *de = netdev_priv(dev);
675 struct netdev_hw_addr *ha;
679 memset(hash_table, 0, sizeof(hash_table));
680 set_bit_le(255, hash_table); /* Broadcast entry */
681 /* This should work on big-endian machines as well. */
682 netdev_for_each_mc_addr(ha, dev) {
683 int index = ether_crc_le(ETH_ALEN, ha->addr) & 0x1ff;
685 set_bit_le(index, hash_table);
688 for (i = 0; i < 32; i++) {
689 *setup_frm++ = hash_table[i];
690 *setup_frm++ = hash_table[i];
692 setup_frm = &de->setup_frame[13*6];
694 /* Fill the final entry with our physical address. */
695 eaddrs = (u16 *)dev->dev_addr;
696 *setup_frm++ = eaddrs[0]; *setup_frm++ = eaddrs[0];
697 *setup_frm++ = eaddrs[1]; *setup_frm++ = eaddrs[1];
698 *setup_frm++ = eaddrs[2]; *setup_frm++ = eaddrs[2];
701 static void build_setup_frame_perfect(u16 *setup_frm, struct net_device *dev)
703 struct de_private *de = netdev_priv(dev);
704 struct netdev_hw_addr *ha;
707 /* We have <= 14 addresses so we can use the wonderful
708 16 address perfect filtering of the Tulip. */
709 netdev_for_each_mc_addr(ha, dev) {
710 eaddrs = (u16 *) ha->addr;
711 *setup_frm++ = *eaddrs; *setup_frm++ = *eaddrs++;
712 *setup_frm++ = *eaddrs; *setup_frm++ = *eaddrs++;
713 *setup_frm++ = *eaddrs; *setup_frm++ = *eaddrs++;
715 /* Fill the unused entries with the broadcast address. */
716 memset(setup_frm, 0xff, (15 - netdev_mc_count(dev)) * 12);
717 setup_frm = &de->setup_frame[15*6];
719 /* Fill the final entry with our physical address. */
720 eaddrs = (u16 *)dev->dev_addr;
721 *setup_frm++ = eaddrs[0]; *setup_frm++ = eaddrs[0];
722 *setup_frm++ = eaddrs[1]; *setup_frm++ = eaddrs[1];
723 *setup_frm++ = eaddrs[2]; *setup_frm++ = eaddrs[2];
727 static void __de_set_rx_mode (struct net_device *dev)
729 struct de_private *de = netdev_priv(dev);
734 struct de_desc *dummy_txd = NULL;
736 macmode = dr32(MacMode) & ~(AcceptAllMulticast | AcceptAllPhys);
738 if (dev->flags & IFF_PROMISC) { /* Set promiscuous. */
739 macmode |= AcceptAllMulticast | AcceptAllPhys;
743 if ((netdev_mc_count(dev) > 1000) || (dev->flags & IFF_ALLMULTI)) {
744 /* Too many to filter well -- accept all multicasts. */
745 macmode |= AcceptAllMulticast;
749 /* Note that only the low-address shortword of setup_frame is valid!
750 The values are doubled for big-endian architectures. */
751 if (netdev_mc_count(dev) > 14) /* Must use a multicast hash table. */
752 build_setup_frame_hash (de->setup_frame, dev);
754 build_setup_frame_perfect (de->setup_frame, dev);
757 * Now add this frame to the Tx list.
762 /* Avoid a chip errata by prefixing a dummy entry. */
764 de->tx_skb[entry].skb = DE_DUMMY_SKB;
766 dummy_txd = &de->tx_ring[entry];
767 dummy_txd->opts2 = (entry == (DE_TX_RING_SIZE - 1)) ?
768 cpu_to_le32(RingEnd) : 0;
769 dummy_txd->addr1 = 0;
771 /* Must set DescOwned later to avoid race with chip */
773 entry = NEXT_TX(entry);
776 de->tx_skb[entry].skb = DE_SETUP_SKB;
777 de->tx_skb[entry].mapping = mapping =
778 pci_map_single (de->pdev, de->setup_frame,
779 sizeof (de->setup_frame), PCI_DMA_TODEVICE);
781 /* Put the setup frame on the Tx list. */
782 txd = &de->tx_ring[entry];
783 if (entry == (DE_TX_RING_SIZE - 1))
784 txd->opts2 = cpu_to_le32(SetupFrame | RingEnd | sizeof (de->setup_frame));
786 txd->opts2 = cpu_to_le32(SetupFrame | sizeof (de->setup_frame));
787 txd->addr1 = cpu_to_le32(mapping);
790 txd->opts1 = cpu_to_le32(DescOwn);
794 dummy_txd->opts1 = cpu_to_le32(DescOwn);
798 de->tx_head = NEXT_TX(entry);
800 if (TX_BUFFS_AVAIL(de) == 0)
801 netif_stop_queue(dev);
803 /* Trigger an immediate transmit demand. */
804 dw32(TxPoll, NormalTxPoll);
807 if (macmode != dr32(MacMode))
808 dw32(MacMode, macmode);
811 static void de_set_rx_mode (struct net_device *dev)
814 struct de_private *de = netdev_priv(dev);
816 spin_lock_irqsave (&de->lock, flags);
817 __de_set_rx_mode(dev);
818 spin_unlock_irqrestore (&de->lock, flags);
821 static inline void de_rx_missed(struct de_private *de, u32 rx_missed)
823 if (unlikely(rx_missed & RxMissedOver))
824 de->net_stats.rx_missed_errors += RxMissedMask;
826 de->net_stats.rx_missed_errors += (rx_missed & RxMissedMask);
829 static void __de_get_stats(struct de_private *de)
831 u32 tmp = dr32(RxMissed); /* self-clearing */
833 de_rx_missed(de, tmp);
836 static struct net_device_stats *de_get_stats(struct net_device *dev)
838 struct de_private *de = netdev_priv(dev);
840 /* The chip only need report frame silently dropped. */
841 spin_lock_irq(&de->lock);
842 if (netif_running(dev) && netif_device_present(dev))
844 spin_unlock_irq(&de->lock);
846 return &de->net_stats;
849 static inline int de_is_running (struct de_private *de)
851 return (dr32(MacStatus) & (RxState | TxState)) ? 1 : 0;
854 static void de_stop_rxtx (struct de_private *de)
857 unsigned int i = 1300/100;
859 macmode = dr32(MacMode);
860 if (macmode & RxTx) {
861 dw32(MacMode, macmode & ~RxTx);
865 /* wait until in-flight frame completes.
866 * Max time @ 10BT: 1500*8b/10Mbps == 1200us (+ 100us margin)
867 * Typically expect this loop to end in < 50 us on 100BT.
870 if (!de_is_running(de))
875 dev_warn(&de->dev->dev, "timeout expired stopping DMA\n");
878 static inline void de_start_rxtx (struct de_private *de)
882 macmode = dr32(MacMode);
883 if ((macmode & RxTx) != RxTx) {
884 dw32(MacMode, macmode | RxTx);
889 static void de_stop_hw (struct de_private *de)
897 dw32(MacStatus, dr32(MacStatus));
902 de->tx_head = de->tx_tail = 0;
905 static void de_link_up(struct de_private *de)
907 if (!netif_carrier_ok(de->dev)) {
908 netif_carrier_on(de->dev);
909 if (netif_msg_link(de))
910 dev_info(&de->dev->dev, "link up, media %s\n",
911 media_name[de->media_type]);
915 static void de_link_down(struct de_private *de)
917 if (netif_carrier_ok(de->dev)) {
918 netif_carrier_off(de->dev);
919 if (netif_msg_link(de))
920 dev_info(&de->dev->dev, "link down\n");
924 static void de_set_media (struct de_private *de)
926 unsigned media = de->media_type;
927 u32 macmode = dr32(MacMode);
929 if (de_is_running(de))
930 dev_warn(&de->dev->dev,
931 "chip is running while changing media!\n");
934 dw32(CSR11, FULL_DUPLEX_MAGIC);
935 dw32(CSR13, 0); /* Reset phy */
936 dw32(CSR14, de->media[media].csr14);
937 dw32(CSR15, de->media[media].csr15);
938 dw32(CSR13, de->media[media].csr13);
940 /* must delay 10ms before writing to other registers,
945 if (media == DE_MEDIA_TP_FD)
946 macmode |= FullDuplex;
948 macmode &= ~FullDuplex;
950 if (netif_msg_link(de)) {
951 dev_info(&de->dev->dev, "set link %s\n", media_name[media]);
952 dev_info(&de->dev->dev, "mode 0x%x, sia 0x%x,0x%x,0x%x,0x%x\n",
953 dr32(MacMode), dr32(SIAStatus),
954 dr32(CSR13), dr32(CSR14), dr32(CSR15));
956 dev_info(&de->dev->dev,
957 "set mode 0x%x, set sia 0x%x,0x%x,0x%x\n",
958 macmode, de->media[media].csr13,
959 de->media[media].csr14, de->media[media].csr15);
961 if (macmode != dr32(MacMode))
962 dw32(MacMode, macmode);
965 static void de_next_media (struct de_private *de, u32 *media,
966 unsigned int n_media)
970 for (i = 0; i < n_media; i++) {
971 if (de_ok_to_advertise(de, media[i])) {
972 de->media_type = media[i];
978 static void de21040_media_timer (unsigned long data)
980 struct de_private *de = (struct de_private *) data;
981 struct net_device *dev = de->dev;
982 u32 status = dr32(SIAStatus);
983 unsigned int carrier;
986 carrier = (status & NetCxnErr) ? 0 : 1;
989 if (de->media_type != DE_MEDIA_AUI && (status & LinkFailStatus))
992 de->media_timer.expires = jiffies + DE_TIMER_LINK;
993 add_timer(&de->media_timer);
994 if (!netif_carrier_ok(dev))
997 if (netif_msg_timer(de))
998 dev_info(&dev->dev, "%s link ok, status %x\n",
999 media_name[de->media_type], status);
1008 if (de->media_type == DE_MEDIA_AUI) {
1009 u32 next_state = DE_MEDIA_TP;
1010 de_next_media(de, &next_state, 1);
1012 u32 next_state = DE_MEDIA_AUI;
1013 de_next_media(de, &next_state, 1);
1016 spin_lock_irqsave(&de->lock, flags);
1018 spin_unlock_irqrestore(&de->lock, flags);
1023 de->media_timer.expires = jiffies + DE_TIMER_NO_LINK;
1024 add_timer(&de->media_timer);
1026 if (netif_msg_timer(de))
1027 dev_info(&dev->dev, "no link, trying media %s, status %x\n",
1028 media_name[de->media_type], status);
1031 static unsigned int de_ok_to_advertise (struct de_private *de, u32 new_media)
1033 switch (new_media) {
1034 case DE_MEDIA_TP_AUTO:
1035 if (!(de->media_advertise & ADVERTISED_Autoneg))
1037 if (!(de->media_advertise & (ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full)))
1041 if (!(de->media_advertise & ADVERTISED_BNC))
1045 if (!(de->media_advertise & ADVERTISED_AUI))
1049 if (!(de->media_advertise & ADVERTISED_10baseT_Half))
1052 case DE_MEDIA_TP_FD:
1053 if (!(de->media_advertise & ADVERTISED_10baseT_Full))
1061 static void de21041_media_timer (unsigned long data)
1063 struct de_private *de = (struct de_private *) data;
1064 struct net_device *dev = de->dev;
1065 u32 status = dr32(SIAStatus);
1066 unsigned int carrier;
1067 unsigned long flags;
1069 carrier = (status & NetCxnErr) ? 0 : 1;
1072 if ((de->media_type == DE_MEDIA_TP_AUTO ||
1073 de->media_type == DE_MEDIA_TP ||
1074 de->media_type == DE_MEDIA_TP_FD) &&
1075 (status & LinkFailStatus))
1078 de->media_timer.expires = jiffies + DE_TIMER_LINK;
1079 add_timer(&de->media_timer);
1080 if (!netif_carrier_ok(dev))
1083 if (netif_msg_timer(de))
1085 "%s link ok, mode %x status %x\n",
1086 media_name[de->media_type],
1087 dr32(MacMode), status);
1093 /* if media type locked, don't switch media */
1097 /* if activity detected, use that as hint for new media type */
1098 if (status & NonselPortActive) {
1099 unsigned int have_media = 1;
1101 /* if AUI/BNC selected, then activity is on TP port */
1102 if (de->media_type == DE_MEDIA_AUI ||
1103 de->media_type == DE_MEDIA_BNC) {
1104 if (de_ok_to_advertise(de, DE_MEDIA_TP_AUTO))
1105 de->media_type = DE_MEDIA_TP_AUTO;
1110 /* TP selected. If there is only TP and BNC, then it's BNC */
1111 else if (((de->media_supported & DE_AUI_BNC) == SUPPORTED_BNC) &&
1112 de_ok_to_advertise(de, DE_MEDIA_BNC))
1113 de->media_type = DE_MEDIA_BNC;
1115 /* TP selected. If there is only TP and AUI, then it's AUI */
1116 else if (((de->media_supported & DE_AUI_BNC) == SUPPORTED_AUI) &&
1117 de_ok_to_advertise(de, DE_MEDIA_AUI))
1118 de->media_type = DE_MEDIA_AUI;
1120 /* otherwise, ignore the hint */
1129 * Absent or ambiguous activity hint, move to next advertised
1130 * media state. If de->media_type is left unchanged, this
1131 * simply resets the PHY and reloads the current media settings.
1133 if (de->media_type == DE_MEDIA_AUI) {
1134 u32 next_states[] = { DE_MEDIA_BNC, DE_MEDIA_TP_AUTO };
1135 de_next_media(de, next_states, ARRAY_SIZE(next_states));
1136 } else if (de->media_type == DE_MEDIA_BNC) {
1137 u32 next_states[] = { DE_MEDIA_TP_AUTO, DE_MEDIA_AUI };
1138 de_next_media(de, next_states, ARRAY_SIZE(next_states));
1140 u32 next_states[] = { DE_MEDIA_AUI, DE_MEDIA_BNC, DE_MEDIA_TP_AUTO };
1141 de_next_media(de, next_states, ARRAY_SIZE(next_states));
1145 spin_lock_irqsave(&de->lock, flags);
1147 spin_unlock_irqrestore(&de->lock, flags);
1152 de->media_timer.expires = jiffies + DE_TIMER_NO_LINK;
1153 add_timer(&de->media_timer);
1155 if (netif_msg_timer(de))
1156 dev_info(&dev->dev, "no link, trying media %s, status %x\n",
1157 media_name[de->media_type], status);
1160 static void de_media_interrupt (struct de_private *de, u32 status)
1162 if (status & LinkPass) {
1164 mod_timer(&de->media_timer, jiffies + DE_TIMER_LINK);
1168 BUG_ON(!(status & LinkFail));
1170 if (netif_carrier_ok(de->dev)) {
1172 mod_timer(&de->media_timer, jiffies + DE_TIMER_NO_LINK);
1176 static int de_reset_mac (struct de_private *de)
1181 * Reset MAC. de4x5.c and tulip.c examined for "advice"
1185 if (dr32(BusMode) == 0xffffffff)
1188 /* Reset the chip, holding bit 0 set at least 50 PCI cycles. */
1189 dw32 (BusMode, CmdReset);
1192 dw32 (BusMode, de_bus_mode);
1195 for (tmp = 0; tmp < 5; tmp++) {
1202 status = dr32(MacStatus);
1203 if (status & (RxState | TxState))
1205 if (status == 0xffffffff)
1210 static void de_adapter_wake (struct de_private *de)
1217 pci_read_config_dword(de->pdev, PCIPM, &pmctl);
1218 if (pmctl & PM_Mask) {
1220 pci_write_config_dword(de->pdev, PCIPM, pmctl);
1222 /* de4x5.c delays, so we do too */
1227 static void de_adapter_sleep (struct de_private *de)
1234 dw32(CSR13, 0); /* Reset phy */
1235 pci_read_config_dword(de->pdev, PCIPM, &pmctl);
1237 pci_write_config_dword(de->pdev, PCIPM, pmctl);
1240 static int de_init_hw (struct de_private *de)
1242 struct net_device *dev = de->dev;
1246 de_adapter_wake(de);
1248 macmode = dr32(MacMode) & ~MacModeClear;
1250 rc = de_reset_mac(de);
1254 de_set_media(de); /* reset phy */
1256 dw32(RxRingAddr, de->ring_dma);
1257 dw32(TxRingAddr, de->ring_dma + (sizeof(struct de_desc) * DE_RX_RING_SIZE));
1259 dw32(MacMode, RxTx | macmode);
1261 dr32(RxMissed); /* self-clearing */
1263 dw32(IntrMask, de_intr_mask);
1265 de_set_rx_mode(dev);
1270 static int de_refill_rx (struct de_private *de)
1274 for (i = 0; i < DE_RX_RING_SIZE; i++) {
1275 struct sk_buff *skb;
1277 skb = dev_alloc_skb(de->rx_buf_sz);
1283 de->rx_skb[i].mapping = pci_map_single(de->pdev,
1284 skb->data, de->rx_buf_sz, PCI_DMA_FROMDEVICE);
1285 de->rx_skb[i].skb = skb;
1287 de->rx_ring[i].opts1 = cpu_to_le32(DescOwn);
1288 if (i == (DE_RX_RING_SIZE - 1))
1289 de->rx_ring[i].opts2 =
1290 cpu_to_le32(RingEnd | de->rx_buf_sz);
1292 de->rx_ring[i].opts2 = cpu_to_le32(de->rx_buf_sz);
1293 de->rx_ring[i].addr1 = cpu_to_le32(de->rx_skb[i].mapping);
1294 de->rx_ring[i].addr2 = 0;
1304 static int de_init_rings (struct de_private *de)
1306 memset(de->tx_ring, 0, sizeof(struct de_desc) * DE_TX_RING_SIZE);
1307 de->tx_ring[DE_TX_RING_SIZE - 1].opts2 = cpu_to_le32(RingEnd);
1310 de->tx_head = de->tx_tail = 0;
1312 return de_refill_rx (de);
1315 static int de_alloc_rings (struct de_private *de)
1317 de->rx_ring = pci_alloc_consistent(de->pdev, DE_RING_BYTES, &de->ring_dma);
1320 de->tx_ring = &de->rx_ring[DE_RX_RING_SIZE];
1321 return de_init_rings(de);
1324 static void de_clean_rings (struct de_private *de)
1328 memset(de->rx_ring, 0, sizeof(struct de_desc) * DE_RX_RING_SIZE);
1329 de->rx_ring[DE_RX_RING_SIZE - 1].opts2 = cpu_to_le32(RingEnd);
1331 memset(de->tx_ring, 0, sizeof(struct de_desc) * DE_TX_RING_SIZE);
1332 de->tx_ring[DE_TX_RING_SIZE - 1].opts2 = cpu_to_le32(RingEnd);
1335 for (i = 0; i < DE_RX_RING_SIZE; i++) {
1336 if (de->rx_skb[i].skb) {
1337 pci_unmap_single(de->pdev, de->rx_skb[i].mapping,
1338 de->rx_buf_sz, PCI_DMA_FROMDEVICE);
1339 dev_kfree_skb(de->rx_skb[i].skb);
1343 for (i = 0; i < DE_TX_RING_SIZE; i++) {
1344 struct sk_buff *skb = de->tx_skb[i].skb;
1345 if ((skb) && (skb != DE_DUMMY_SKB)) {
1346 if (skb != DE_SETUP_SKB) {
1347 de->net_stats.tx_dropped++;
1348 pci_unmap_single(de->pdev,
1349 de->tx_skb[i].mapping,
1350 skb->len, PCI_DMA_TODEVICE);
1353 pci_unmap_single(de->pdev,
1354 de->tx_skb[i].mapping,
1355 sizeof(de->setup_frame),
1361 memset(&de->rx_skb, 0, sizeof(struct ring_info) * DE_RX_RING_SIZE);
1362 memset(&de->tx_skb, 0, sizeof(struct ring_info) * DE_TX_RING_SIZE);
1365 static void de_free_rings (struct de_private *de)
1368 pci_free_consistent(de->pdev, DE_RING_BYTES, de->rx_ring, de->ring_dma);
1373 static int de_open (struct net_device *dev)
1375 struct de_private *de = netdev_priv(dev);
1378 if (netif_msg_ifup(de))
1379 printk(KERN_DEBUG "%s: enabling interface\n", dev->name);
1381 de->rx_buf_sz = (dev->mtu <= 1500 ? PKT_BUF_SZ : dev->mtu + 32);
1383 rc = de_alloc_rings(de);
1385 dev_err(&dev->dev, "ring allocation failure, err=%d\n", rc);
1391 rc = request_irq(dev->irq, de_interrupt, IRQF_SHARED, dev->name, dev);
1393 dev_err(&dev->dev, "IRQ %d request failure, err=%d\n",
1398 rc = de_init_hw(de);
1400 dev_err(&dev->dev, "h/w init failure, err=%d\n", rc);
1401 goto err_out_free_irq;
1404 netif_start_queue(dev);
1405 mod_timer(&de->media_timer, jiffies + DE_TIMER_NO_LINK);
1410 free_irq(dev->irq, dev);
1416 static int de_close (struct net_device *dev)
1418 struct de_private *de = netdev_priv(dev);
1419 unsigned long flags;
1421 if (netif_msg_ifdown(de))
1422 printk(KERN_DEBUG "%s: disabling interface\n", dev->name);
1424 del_timer_sync(&de->media_timer);
1426 spin_lock_irqsave(&de->lock, flags);
1428 netif_stop_queue(dev);
1429 netif_carrier_off(dev);
1430 spin_unlock_irqrestore(&de->lock, flags);
1432 free_irq(dev->irq, dev);
1435 de_adapter_sleep(de);
1439 static void de_tx_timeout (struct net_device *dev)
1441 struct de_private *de = netdev_priv(dev);
1443 printk(KERN_DEBUG "%s: NIC status %08x mode %08x sia %08x desc %u/%u/%u\n",
1444 dev->name, dr32(MacStatus), dr32(MacMode), dr32(SIAStatus),
1445 de->rx_tail, de->tx_head, de->tx_tail);
1447 del_timer_sync(&de->media_timer);
1449 disable_irq(dev->irq);
1450 spin_lock_irq(&de->lock);
1453 netif_stop_queue(dev);
1454 netif_carrier_off(dev);
1456 spin_unlock_irq(&de->lock);
1457 enable_irq(dev->irq);
1459 /* Update the error counts. */
1462 synchronize_irq(dev->irq);
1469 netif_wake_queue(dev);
1472 static void __de_get_regs(struct de_private *de, u8 *buf)
1475 u32 *rbuf = (u32 *)buf;
1478 for (i = 0; i < DE_NUM_REGS; i++)
1479 rbuf[i] = dr32(i * 8);
1481 /* handle self-clearing RxMissed counter, CSR8 */
1482 de_rx_missed(de, rbuf[8]);
1485 static int __de_get_settings(struct de_private *de, struct ethtool_cmd *ecmd)
1487 ecmd->supported = de->media_supported;
1488 ecmd->transceiver = XCVR_INTERNAL;
1489 ecmd->phy_address = 0;
1490 ecmd->advertising = de->media_advertise;
1492 switch (de->media_type) {
1494 ecmd->port = PORT_AUI;
1498 ecmd->port = PORT_BNC;
1502 ecmd->port = PORT_TP;
1503 ecmd->speed = SPEED_10;
1507 if (dr32(MacMode) & FullDuplex)
1508 ecmd->duplex = DUPLEX_FULL;
1510 ecmd->duplex = DUPLEX_HALF;
1513 ecmd->autoneg = AUTONEG_DISABLE;
1515 ecmd->autoneg = AUTONEG_ENABLE;
1517 /* ignore maxtxpkt, maxrxpkt for now */
1522 static int __de_set_settings(struct de_private *de, struct ethtool_cmd *ecmd)
1525 unsigned int media_lock;
1527 if (ecmd->speed != SPEED_10 && ecmd->speed != 5 && ecmd->speed != 2)
1529 if (de->de21040 && ecmd->speed == 2)
1531 if (ecmd->duplex != DUPLEX_HALF && ecmd->duplex != DUPLEX_FULL)
1533 if (ecmd->port != PORT_TP && ecmd->port != PORT_AUI && ecmd->port != PORT_BNC)
1535 if (de->de21040 && ecmd->port == PORT_BNC)
1537 if (ecmd->transceiver != XCVR_INTERNAL)
1539 if (ecmd->autoneg != AUTONEG_DISABLE && ecmd->autoneg != AUTONEG_ENABLE)
1541 if (ecmd->advertising & ~de->media_supported)
1543 if (ecmd->autoneg == AUTONEG_ENABLE &&
1544 (!(ecmd->advertising & ADVERTISED_Autoneg)))
1547 switch (ecmd->port) {
1549 new_media = DE_MEDIA_AUI;
1550 if (!(ecmd->advertising & ADVERTISED_AUI))
1554 new_media = DE_MEDIA_BNC;
1555 if (!(ecmd->advertising & ADVERTISED_BNC))
1559 if (ecmd->autoneg == AUTONEG_ENABLE)
1560 new_media = DE_MEDIA_TP_AUTO;
1561 else if (ecmd->duplex == DUPLEX_FULL)
1562 new_media = DE_MEDIA_TP_FD;
1564 new_media = DE_MEDIA_TP;
1565 if (!(ecmd->advertising & ADVERTISED_TP))
1567 if (!(ecmd->advertising & (ADVERTISED_10baseT_Full | ADVERTISED_10baseT_Half)))
1572 media_lock = (ecmd->autoneg == AUTONEG_ENABLE) ? 0 : 1;
1574 if ((new_media == de->media_type) &&
1575 (media_lock == de->media_lock) &&
1576 (ecmd->advertising == de->media_advertise))
1577 return 0; /* nothing to change */
1582 de->media_type = new_media;
1583 de->media_lock = media_lock;
1584 de->media_advertise = ecmd->advertising;
1590 static void de_get_drvinfo (struct net_device *dev,struct ethtool_drvinfo *info)
1592 struct de_private *de = netdev_priv(dev);
1594 strcpy (info->driver, DRV_NAME);
1595 strcpy (info->version, DRV_VERSION);
1596 strcpy (info->bus_info, pci_name(de->pdev));
1597 info->eedump_len = DE_EEPROM_SIZE;
1600 static int de_get_regs_len(struct net_device *dev)
1602 return DE_REGS_SIZE;
1605 static int de_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
1607 struct de_private *de = netdev_priv(dev);
1610 spin_lock_irq(&de->lock);
1611 rc = __de_get_settings(de, ecmd);
1612 spin_unlock_irq(&de->lock);
1617 static int de_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
1619 struct de_private *de = netdev_priv(dev);
1622 spin_lock_irq(&de->lock);
1623 rc = __de_set_settings(de, ecmd);
1624 spin_unlock_irq(&de->lock);
1629 static u32 de_get_msglevel(struct net_device *dev)
1631 struct de_private *de = netdev_priv(dev);
1633 return de->msg_enable;
1636 static void de_set_msglevel(struct net_device *dev, u32 msglvl)
1638 struct de_private *de = netdev_priv(dev);
1640 de->msg_enable = msglvl;
1643 static int de_get_eeprom(struct net_device *dev,
1644 struct ethtool_eeprom *eeprom, u8 *data)
1646 struct de_private *de = netdev_priv(dev);
1650 if ((eeprom->offset != 0) || (eeprom->magic != 0) ||
1651 (eeprom->len != DE_EEPROM_SIZE))
1653 memcpy(data, de->ee_data, eeprom->len);
1658 static int de_nway_reset(struct net_device *dev)
1660 struct de_private *de = netdev_priv(dev);
1663 if (de->media_type != DE_MEDIA_TP_AUTO)
1665 if (netif_carrier_ok(de->dev))
1668 status = dr32(SIAStatus);
1669 dw32(SIAStatus, (status & ~NWayState) | NWayRestart);
1670 if (netif_msg_link(de))
1671 dev_info(&de->dev->dev, "link nway restart, status %x,%x\n",
1672 status, dr32(SIAStatus));
1676 static void de_get_regs(struct net_device *dev, struct ethtool_regs *regs,
1679 struct de_private *de = netdev_priv(dev);
1681 regs->version = (DE_REGS_VER << 2) | de->de21040;
1683 spin_lock_irq(&de->lock);
1684 __de_get_regs(de, data);
1685 spin_unlock_irq(&de->lock);
1688 static const struct ethtool_ops de_ethtool_ops = {
1689 .get_link = ethtool_op_get_link,
1690 .get_drvinfo = de_get_drvinfo,
1691 .get_regs_len = de_get_regs_len,
1692 .get_settings = de_get_settings,
1693 .set_settings = de_set_settings,
1694 .get_msglevel = de_get_msglevel,
1695 .set_msglevel = de_set_msglevel,
1696 .get_eeprom = de_get_eeprom,
1697 .nway_reset = de_nway_reset,
1698 .get_regs = de_get_regs,
1701 static void __devinit de21040_get_mac_address (struct de_private *de)
1705 dw32 (ROMCmd, 0); /* Reset the pointer with a dummy write. */
1708 for (i = 0; i < 6; i++) {
1709 int value, boguscnt = 100000;
1711 value = dr32(ROMCmd);
1713 } while (value < 0 && --boguscnt > 0);
1714 de->dev->dev_addr[i] = value;
1717 pr_warning(PFX "timeout reading 21040 MAC address byte %u\n", i);
1721 static void __devinit de21040_get_media_info(struct de_private *de)
1725 de->media_type = DE_MEDIA_TP;
1726 de->media_supported |= SUPPORTED_TP | SUPPORTED_10baseT_Full |
1727 SUPPORTED_10baseT_Half | SUPPORTED_AUI;
1728 de->media_advertise = de->media_supported;
1730 for (i = 0; i < DE_MAX_MEDIA; i++) {
1734 case DE_MEDIA_TP_FD:
1735 de->media[i].type = i;
1736 de->media[i].csr13 = t21040_csr13[i];
1737 de->media[i].csr14 = t21040_csr14[i];
1738 de->media[i].csr15 = t21040_csr15[i];
1741 de->media[i].type = DE_MEDIA_INVALID;
1747 /* Note: this routine returns extra data bits for size detection. */
1748 static unsigned __devinit tulip_read_eeprom(void __iomem *regs, int location, int addr_len)
1751 unsigned retval = 0;
1752 void __iomem *ee_addr = regs + ROMCmd;
1753 int read_cmd = location | (EE_READ_CMD << addr_len);
1755 writel(EE_ENB & ~EE_CS, ee_addr);
1756 writel(EE_ENB, ee_addr);
1758 /* Shift the read command bits out. */
1759 for (i = 4 + addr_len; i >= 0; i--) {
1760 short dataval = (read_cmd & (1 << i)) ? EE_DATA_WRITE : 0;
1761 writel(EE_ENB | dataval, ee_addr);
1763 writel(EE_ENB | dataval | EE_SHIFT_CLK, ee_addr);
1765 retval = (retval << 1) | ((readl(ee_addr) & EE_DATA_READ) ? 1 : 0);
1767 writel(EE_ENB, ee_addr);
1770 for (i = 16; i > 0; i--) {
1771 writel(EE_ENB | EE_SHIFT_CLK, ee_addr);
1773 retval = (retval << 1) | ((readl(ee_addr) & EE_DATA_READ) ? 1 : 0);
1774 writel(EE_ENB, ee_addr);
1778 /* Terminate the EEPROM access. */
1779 writel(EE_ENB & ~EE_CS, ee_addr);
1783 static void __devinit de21041_get_srom_info (struct de_private *de)
1785 unsigned i, sa_offset = 0, ofs;
1786 u8 ee_data[DE_EEPROM_SIZE + 6] = {};
1787 unsigned ee_addr_size = tulip_read_eeprom(de->regs, 0xff, 8) & 0x40000 ? 8 : 6;
1788 struct de_srom_info_leaf *il;
1791 /* download entire eeprom */
1792 for (i = 0; i < DE_EEPROM_WORDS; i++)
1793 ((__le16 *)ee_data)[i] =
1794 cpu_to_le16(tulip_read_eeprom(de->regs, i, ee_addr_size));
1796 /* DEC now has a specification but early board makers
1797 just put the address in the first EEPROM locations. */
1798 /* This does memcmp(eedata, eedata+16, 8) */
1800 #ifndef CONFIG_MIPS_COBALT
1802 for (i = 0; i < 8; i ++)
1803 if (ee_data[i] != ee_data[16+i])
1808 /* store MAC address */
1809 for (i = 0; i < 6; i ++)
1810 de->dev->dev_addr[i] = ee_data[i + sa_offset];
1812 /* get offset of controller 0 info leaf. ignore 2nd byte. */
1813 ofs = ee_data[SROMC0InfoLeaf];
1814 if (ofs >= (sizeof(ee_data) - sizeof(struct de_srom_info_leaf) - sizeof(struct de_srom_media_block)))
1817 /* get pointer to info leaf */
1818 il = (struct de_srom_info_leaf *) &ee_data[ofs];
1820 /* paranoia checks */
1821 if (il->n_blocks == 0)
1823 if ((sizeof(ee_data) - ofs) <
1824 (sizeof(struct de_srom_info_leaf) + (sizeof(struct de_srom_media_block) * il->n_blocks)))
1827 /* get default media type */
1828 switch (get_unaligned(&il->default_media)) {
1829 case 0x0001: de->media_type = DE_MEDIA_BNC; break;
1830 case 0x0002: de->media_type = DE_MEDIA_AUI; break;
1831 case 0x0204: de->media_type = DE_MEDIA_TP_FD; break;
1832 default: de->media_type = DE_MEDIA_TP_AUTO; break;
1835 if (netif_msg_probe(de))
1836 pr_info("de%d: SROM leaf offset %u, default media %s\n",
1837 de->board_idx, ofs, media_name[de->media_type]);
1839 /* init SIA register values to defaults */
1840 for (i = 0; i < DE_MAX_MEDIA; i++) {
1841 de->media[i].type = DE_MEDIA_INVALID;
1842 de->media[i].csr13 = 0xffff;
1843 de->media[i].csr14 = 0xffff;
1844 de->media[i].csr15 = 0xffff;
1847 /* parse media blocks to see what medias are supported,
1848 * and if any custom CSR values are provided
1850 bufp = ((void *)il) + sizeof(*il);
1851 for (i = 0; i < il->n_blocks; i++) {
1852 struct de_srom_media_block *ib = bufp;
1855 /* index based on media type in media block */
1856 switch(ib->opts & MediaBlockMask) {
1857 case 0: /* 10baseT */
1858 de->media_supported |= SUPPORTED_TP | SUPPORTED_10baseT_Half
1859 | SUPPORTED_Autoneg;
1861 de->media[DE_MEDIA_TP_AUTO].type = DE_MEDIA_TP_AUTO;
1864 de->media_supported |= SUPPORTED_BNC;
1868 de->media_supported |= SUPPORTED_AUI;
1871 case 4: /* 10baseT-FD */
1872 de->media_supported |= SUPPORTED_TP | SUPPORTED_10baseT_Full
1873 | SUPPORTED_Autoneg;
1874 idx = DE_MEDIA_TP_FD;
1875 de->media[DE_MEDIA_TP_AUTO].type = DE_MEDIA_TP_AUTO;
1881 de->media[idx].type = idx;
1883 if (netif_msg_probe(de))
1884 pr_info("de%d: media block #%u: %s",
1886 media_name[de->media[idx].type]);
1888 bufp += sizeof (ib->opts);
1890 if (ib->opts & MediaCustomCSRs) {
1891 de->media[idx].csr13 = get_unaligned(&ib->csr13);
1892 de->media[idx].csr14 = get_unaligned(&ib->csr14);
1893 de->media[idx].csr15 = get_unaligned(&ib->csr15);
1894 bufp += sizeof(ib->csr13) + sizeof(ib->csr14) +
1897 if (netif_msg_probe(de))
1898 pr_cont(" (%x,%x,%x)\n",
1899 de->media[idx].csr13,
1900 de->media[idx].csr14,
1901 de->media[idx].csr15);
1903 } else if (netif_msg_probe(de))
1906 if (bufp > ((void *)&ee_data[DE_EEPROM_SIZE - 3]))
1910 de->media_advertise = de->media_supported;
1913 /* fill in defaults, for cases where custom CSRs not used */
1914 for (i = 0; i < DE_MAX_MEDIA; i++) {
1915 if (de->media[i].csr13 == 0xffff)
1916 de->media[i].csr13 = t21041_csr13[i];
1917 if (de->media[i].csr14 == 0xffff) {
1918 /* autonegotiation is broken at least on some chip
1919 revisions - rev. 0x21 works, 0x11 does not */
1920 if (de->pdev->revision < 0x20)
1921 de->media[i].csr14 = t21041_csr14_brk[i];
1923 de->media[i].csr14 = t21041_csr14[i];
1925 if (de->media[i].csr15 == 0xffff)
1926 de->media[i].csr15 = t21041_csr15[i];
1929 de->ee_data = kmemdup(&ee_data[0], DE_EEPROM_SIZE, GFP_KERNEL);
1934 /* for error cases, it's ok to assume we support all these */
1935 for (i = 0; i < DE_MAX_MEDIA; i++)
1936 de->media[i].type = i;
1937 de->media_supported =
1938 SUPPORTED_10baseT_Half |
1939 SUPPORTED_10baseT_Full |
1947 static const struct net_device_ops de_netdev_ops = {
1948 .ndo_open = de_open,
1949 .ndo_stop = de_close,
1950 .ndo_set_multicast_list = de_set_rx_mode,
1951 .ndo_start_xmit = de_start_xmit,
1952 .ndo_get_stats = de_get_stats,
1953 .ndo_tx_timeout = de_tx_timeout,
1954 .ndo_change_mtu = eth_change_mtu,
1955 .ndo_set_mac_address = eth_mac_addr,
1956 .ndo_validate_addr = eth_validate_addr,
1959 static int __devinit de_init_one (struct pci_dev *pdev,
1960 const struct pci_device_id *ent)
1962 struct net_device *dev;
1963 struct de_private *de;
1966 unsigned long pciaddr;
1967 static int board_idx = -1;
1973 printk("%s", version);
1976 /* allocate a new ethernet device structure, and fill in defaults */
1977 dev = alloc_etherdev(sizeof(struct de_private));
1981 dev->netdev_ops = &de_netdev_ops;
1982 SET_NETDEV_DEV(dev, &pdev->dev);
1983 dev->ethtool_ops = &de_ethtool_ops;
1984 dev->watchdog_timeo = TX_TIMEOUT;
1986 de = netdev_priv(dev);
1987 de->de21040 = ent->driver_data == 0 ? 1 : 0;
1990 de->msg_enable = (debug < 0 ? DE_DEF_MSG_ENABLE : debug);
1991 de->board_idx = board_idx;
1992 spin_lock_init (&de->lock);
1993 init_timer(&de->media_timer);
1995 de->media_timer.function = de21040_media_timer;
1997 de->media_timer.function = de21041_media_timer;
1998 de->media_timer.data = (unsigned long) de;
2000 netif_carrier_off(dev);
2001 netif_stop_queue(dev);
2003 /* wake up device, assign resources */
2004 rc = pci_enable_device(pdev);
2008 /* reserve PCI resources to ensure driver atomicity */
2009 rc = pci_request_regions(pdev, DRV_NAME);
2011 goto err_out_disable;
2013 /* check for invalid IRQ value */
2014 if (pdev->irq < 2) {
2016 pr_err(PFX "invalid irq (%d) for pci dev %s\n",
2017 pdev->irq, pci_name(pdev));
2021 dev->irq = pdev->irq;
2023 /* obtain and check validity of PCI I/O address */
2024 pciaddr = pci_resource_start(pdev, 1);
2027 pr_err(PFX "no MMIO resource for pci dev %s\n", pci_name(pdev));
2030 if (pci_resource_len(pdev, 1) < DE_REGS_SIZE) {
2032 pr_err(PFX "MMIO resource (%llx) too small on pci dev %s\n",
2033 (unsigned long long)pci_resource_len(pdev, 1),
2038 /* remap CSR registers */
2039 regs = ioremap_nocache(pciaddr, DE_REGS_SIZE);
2042 pr_err(PFX "Cannot map PCI MMIO (%llx@%lx) on pci dev %s\n",
2043 (unsigned long long)pci_resource_len(pdev, 1),
2044 pciaddr, pci_name(pdev));
2047 dev->base_addr = (unsigned long) regs;
2050 de_adapter_wake(de);
2052 /* make sure hardware is not running */
2053 rc = de_reset_mac(de);
2055 pr_err(PFX "Cannot reset MAC, pci dev %s\n", pci_name(pdev));
2059 /* get MAC address, initialize default media type and
2060 * get list of supported media
2063 de21040_get_mac_address(de);
2064 de21040_get_media_info(de);
2066 de21041_get_srom_info(de);
2069 /* register new network interface with kernel */
2070 rc = register_netdev(dev);
2074 /* print info about board and interface just registered */
2075 dev_info(&dev->dev, "%s at 0x%lx, %pM, IRQ %d\n",
2076 de->de21040 ? "21040" : "21041",
2081 pci_set_drvdata(pdev, dev);
2083 /* enable busmastering */
2084 pci_set_master(pdev);
2086 /* put adapter to sleep */
2087 de_adapter_sleep(de);
2095 pci_release_regions(pdev);
2097 pci_disable_device(pdev);
2103 static void __devexit de_remove_one (struct pci_dev *pdev)
2105 struct net_device *dev = pci_get_drvdata(pdev);
2106 struct de_private *de = netdev_priv(dev);
2109 unregister_netdev(dev);
2112 pci_release_regions(pdev);
2113 pci_disable_device(pdev);
2114 pci_set_drvdata(pdev, NULL);
2120 static int de_suspend (struct pci_dev *pdev, pm_message_t state)
2122 struct net_device *dev = pci_get_drvdata (pdev);
2123 struct de_private *de = netdev_priv(dev);
2126 if (netif_running (dev)) {
2127 del_timer_sync(&de->media_timer);
2129 disable_irq(dev->irq);
2130 spin_lock_irq(&de->lock);
2133 netif_stop_queue(dev);
2134 netif_device_detach(dev);
2135 netif_carrier_off(dev);
2137 spin_unlock_irq(&de->lock);
2138 enable_irq(dev->irq);
2140 /* Update the error counts. */
2143 synchronize_irq(dev->irq);
2146 de_adapter_sleep(de);
2147 pci_disable_device(pdev);
2149 netif_device_detach(dev);
2155 static int de_resume (struct pci_dev *pdev)
2157 struct net_device *dev = pci_get_drvdata (pdev);
2158 struct de_private *de = netdev_priv(dev);
2162 if (netif_device_present(dev))
2164 if (!netif_running(dev))
2166 if ((retval = pci_enable_device(pdev))) {
2167 dev_err(&dev->dev, "pci_enable_device failed in resume\n");
2170 pci_set_master(pdev);
2174 netif_device_attach(dev);
2180 #endif /* CONFIG_PM */
2182 static struct pci_driver de_driver = {
2184 .id_table = de_pci_tbl,
2185 .probe = de_init_one,
2186 .remove = __devexit_p(de_remove_one),
2188 .suspend = de_suspend,
2189 .resume = de_resume,
2193 static int __init de_init (void)
2196 printk("%s", version);
2198 return pci_register_driver(&de_driver);
2201 static void __exit de_exit (void)
2203 pci_unregister_driver (&de_driver);
2206 module_init(de_init);
2207 module_exit(de_exit);