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[net-next-2.6.git] / drivers / net / tulip / de2104x.c
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1da177e4
LT		 1/* de2104x.c: A Linux PCI Ethernet driver for Intel/Digital 21040/1 chips. */
2/*
3 Copyright 2001,2003 Jeff Garzik <jgarzik@pobox.com>
4
5 Copyright 1994, 1995 Digital Equipment Corporation. [de4x5.c]
6 Written/copyright 1994-2001 by Donald Becker. [tulip.c]
7
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.
14
15 See the file COPYING in this distribution for more information.
16
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
26 Tx descriptor bit
27
28 */
29
30#define DRV_NAME "de2104x"
31#define DRV_VERSION "0.7"
32#define DRV_RELDATE "Mar 17, 2004"
33
34#include <linux/config.h>
35#include <linux/module.h>
36#include <linux/kernel.h>
37#include <linux/netdevice.h>
38#include <linux/etherdevice.h>
39#include <linux/init.h>
40#include <linux/pci.h>
41#include <linux/delay.h>
42#include <linux/ethtool.h>
43#include <linux/compiler.h>
44#include <linux/rtnetlink.h>
45#include <linux/crc32.h>
46
47#include <asm/io.h>
48#include <asm/irq.h>
49#include <asm/uaccess.h>
50#include <asm/unaligned.h>
51
52/* These identify the driver base version and may not be removed. */
53static char version[] =
54KERN_INFO DRV_NAME " PCI Ethernet driver v" DRV_VERSION " (" DRV_RELDATE ")\n";
55
56MODULE_AUTHOR("Jeff Garzik <jgarzik@pobox.com>");
57MODULE_DESCRIPTION("Intel/Digital 21040/1 series PCI Ethernet driver");
58MODULE_LICENSE("GPL");
59MODULE_VERSION(DRV_VERSION);
60
61static int debug = -1;
62module_param (debug, int, 0);
63MODULE_PARM_DESC (debug, "de2104x bitmapped message enable number");
64
65/* Set the copy breakpoint for the copy-only-tiny-buffer Rx structure. */
66#if defined(__alpha__) || defined(__arm__) || defined(__hppa__) \
67 || defined(__sparc_) || defined(__ia64__) \
68 || defined(__sh__) || defined(__mips__)
69static int rx_copybreak = 1518;
70#else
71static int rx_copybreak = 100;
72#endif
73module_param (rx_copybreak, int, 0);
74MODULE_PARM_DESC (rx_copybreak, "de2104x Breakpoint at which Rx packets are copied");
75
76#define PFX DRV_NAME ": "
77
78#define DE_DEF_MSG_ENABLE (NETIF_MSG_DRV | \
79 NETIF_MSG_PROBE | \
80 NETIF_MSG_LINK | \
81 NETIF_MSG_IFDOWN | \
82 NETIF_MSG_IFUP | \
83 NETIF_MSG_RX_ERR | \
84 NETIF_MSG_TX_ERR)
85
86#define DE_RX_RING_SIZE 64
87#define DE_TX_RING_SIZE 64
88#define DE_RING_BYTES \
89 ((sizeof(struct de_desc) * DE_RX_RING_SIZE) + \
90 (sizeof(struct de_desc) * DE_TX_RING_SIZE))
91#define NEXT_TX(N) (((N) + 1) & (DE_TX_RING_SIZE - 1))
92#define NEXT_RX(N) (((N) + 1) & (DE_RX_RING_SIZE - 1))
93#define TX_BUFFS_AVAIL(CP) \
94 (((CP)->tx_tail <= (CP)->tx_head) ? \
95 (CP)->tx_tail + (DE_TX_RING_SIZE - 1) - (CP)->tx_head : \
96 (CP)->tx_tail - (CP)->tx_head - 1)
97
98#define PKT_BUF_SZ 1536 /* Size of each temporary Rx buffer.*/
99#define RX_OFFSET 2
100
101#define DE_SETUP_SKB ((struct sk_buff *) 1)
102#define DE_DUMMY_SKB ((struct sk_buff *) 2)
103#define DE_SETUP_FRAME_WORDS 96
104#define DE_EEPROM_WORDS 256
105#define DE_EEPROM_SIZE (DE_EEPROM_WORDS * sizeof(u16))
106#define DE_MAX_MEDIA 5
107
108#define DE_MEDIA_TP_AUTO 0
109#define DE_MEDIA_BNC 1
110#define DE_MEDIA_AUI 2
111#define DE_MEDIA_TP 3
112#define DE_MEDIA_TP_FD 4
113#define DE_MEDIA_INVALID DE_MAX_MEDIA
114#define DE_MEDIA_FIRST 0
115#define DE_MEDIA_LAST (DE_MAX_MEDIA - 1)
116#define DE_AUI_BNC (SUPPORTED_AUI | SUPPORTED_BNC)
117
118#define DE_TIMER_LINK (60 * HZ)
119#define DE_TIMER_NO_LINK (5 * HZ)
120
121#define DE_NUM_REGS 16
122#define DE_REGS_SIZE (DE_NUM_REGS * sizeof(u32))
123#define DE_REGS_VER 1
124
125/* Time in jiffies before concluding the transmitter is hung. */
126#define TX_TIMEOUT (6*HZ)
127
128#define DE_UNALIGNED_16(a) (u16)(get_unaligned((u16 *)(a)))
129
130/* This is a mysterious value that can be written to CSR11 in the 21040 (only)
131 to support a pre-NWay full-duplex signaling mechanism using short frames.
132 No one knows what it should be, but if left at its default value some
133 10base2(!) packets trigger a full-duplex-request interrupt. */
134#define FULL_DUPLEX_MAGIC 0x6969
135
136enum {
137 /* NIC registers */
138 BusMode = 0x00,
139 TxPoll = 0x08,
140 RxPoll = 0x10,
141 RxRingAddr = 0x18,
142 TxRingAddr = 0x20,
143 MacStatus = 0x28,
144 MacMode = 0x30,
145 IntrMask = 0x38,
146 RxMissed = 0x40,
147 ROMCmd = 0x48,
148 CSR11 = 0x58,
149 SIAStatus = 0x60,
150 CSR13 = 0x68,
151 CSR14 = 0x70,
152 CSR15 = 0x78,
153 PCIPM = 0x40,
154
155 /* BusMode bits */
156 CmdReset = (1 << 0),
157 CacheAlign16 = 0x00008000,
158 BurstLen4 = 0x00000400,
159
160 /* Rx/TxPoll bits */
161 NormalTxPoll = (1 << 0),
162 NormalRxPoll = (1 << 0),
163
164 /* Tx/Rx descriptor status bits */
165 DescOwn = (1 << 31),
166 RxError = (1 << 15),
167 RxErrLong = (1 << 7),
168 RxErrCRC = (1 << 1),
169 RxErrFIFO = (1 << 0),
170 RxErrRunt = (1 << 11),
171 RxErrFrame = (1 << 14),
172 RingEnd = (1 << 25),
173 FirstFrag = (1 << 29),
174 LastFrag = (1 << 30),
175 TxError = (1 << 15),
176 TxFIFOUnder = (1 << 1),
177 TxLinkFail = (1 << 2) | (1 << 10) | (1 << 11),
178 TxMaxCol = (1 << 8),
179 TxOWC = (1 << 9),
180 TxJabber = (1 << 14),
181 SetupFrame = (1 << 27),
182 TxSwInt = (1 << 31),
183
184 /* MacStatus bits */
185 IntrOK = (1 << 16),
186 IntrErr = (1 << 15),
187 RxIntr = (1 << 6),
188 RxEmpty = (1 << 7),
189 TxIntr = (1 << 0),
190 TxEmpty = (1 << 2),
191 PciErr = (1 << 13),
192 TxState = (1 << 22) | (1 << 21) | (1 << 20),
193 RxState = (1 << 19) | (1 << 18) | (1 << 17),
194 LinkFail = (1 << 12),
195 LinkPass = (1 << 4),
196 RxStopped = (1 << 8),
197 TxStopped = (1 << 1),
198
199 /* MacMode bits */
200 TxEnable = (1 << 13),
201 RxEnable = (1 << 1),
202 RxTx = TxEnable | RxEnable,
203 FullDuplex = (1 << 9),
204 AcceptAllMulticast = (1 << 7),
205 AcceptAllPhys = (1 << 6),
206 BOCnt = (1 << 5),
207 MacModeClear = (1<<12) | (1<<11) | (1<<10) | (1<<8) | (1<<3) |
208 RxTx | BOCnt | AcceptAllPhys | AcceptAllMulticast,
209
210 /* ROMCmd bits */
211 EE_SHIFT_CLK = 0x02, /* EEPROM shift clock. */
212 EE_CS = 0x01, /* EEPROM chip select. */
213 EE_DATA_WRITE = 0x04, /* Data from the Tulip to EEPROM. */
214 EE_WRITE_0 = 0x01,
215 EE_WRITE_1 = 0x05,
216 EE_DATA_READ = 0x08, /* Data from the EEPROM chip. */
217 EE_ENB = (0x4800 | EE_CS),
218
219 /* The EEPROM commands include the alway-set leading bit. */
220 EE_READ_CMD = 6,
221
222 /* RxMissed bits */
223 RxMissedOver = (1 << 16),
224 RxMissedMask = 0xffff,
225
226 /* SROM-related bits */
227 SROMC0InfoLeaf = 27,
228 MediaBlockMask = 0x3f,
229 MediaCustomCSRs = (1 << 6),
230
231 /* PCIPM bits */
232 PM_Sleep = (1 << 31),
233 PM_Snooze = (1 << 30),
234 PM_Mask = PM_Sleep | PM_Snooze,
235
236 /* SIAStatus bits */
237 NWayState = (1 << 14) | (1 << 13) | (1 << 12),
238 NWayRestart = (1 << 12),
239 NonselPortActive = (1 << 9),
240 LinkFailStatus = (1 << 2),
241 NetCxnErr = (1 << 1),
242};
243
244static const u32 de_intr_mask =
245 IntrOK | IntrErr | RxIntr | RxEmpty | TxIntr | TxEmpty |
246 LinkPass | LinkFail | PciErr;
247
248/*
249 * Set the programmable burst length to 4 longwords for all:
250 * DMA errors result without these values. Cache align 16 long.
251 */
252static const u32 de_bus_mode = CacheAlign16 | BurstLen4;
253
254struct de_srom_media_block {
255 u8 opts;
256 u16 csr13;
257 u16 csr14;
258 u16 csr15;
259} __attribute__((packed));
260
261struct de_srom_info_leaf {
262 u16 default_media;
263 u8 n_blocks;
264 u8 unused;
265} __attribute__((packed));
266
267struct de_desc {
268 u32 opts1;
269 u32 opts2;
270 u32 addr1;
271 u32 addr2;
272};
273
274struct media_info {
275 u16 type; /* DE_MEDIA_xxx */
276 u16 csr13;
277 u16 csr14;
278 u16 csr15;
279};
280
281struct ring_info {
282 struct sk_buff *skb;
283 dma_addr_t mapping;
284};
285
286struct de_private {
287 unsigned tx_head;
288 unsigned tx_tail;
289 unsigned rx_tail;
290
291 void __iomem *regs;
292 struct net_device *dev;
293 spinlock_t lock;
294
295 struct de_desc *rx_ring;
296 struct de_desc *tx_ring;
297 struct ring_info tx_skb[DE_TX_RING_SIZE];
298 struct ring_info rx_skb[DE_RX_RING_SIZE];
299 unsigned rx_buf_sz;
300 dma_addr_t ring_dma;
301
302 u32 msg_enable;
303
304 struct net_device_stats net_stats;
305
306 struct pci_dev *pdev;
307
308 u16 setup_frame[DE_SETUP_FRAME_WORDS];
309
310 u32 media_type;
311 u32 media_supported;
312 u32 media_advertise;
313 struct media_info media[DE_MAX_MEDIA];
314 struct timer_list media_timer;
315
316 u8 *ee_data;
317 unsigned board_idx;
318 unsigned de21040 : 1;
319 unsigned media_lock : 1;
320};
321
322
323static void de_set_rx_mode (struct net_device *dev);
324static void de_tx (struct de_private *de);
325static void de_clean_rings (struct de_private *de);
326static void de_media_interrupt (struct de_private *de, u32 status);
327static void de21040_media_timer (unsigned long data);
328static void de21041_media_timer (unsigned long data);
329static unsigned int de_ok_to_advertise (struct de_private *de, u32 new_media);
330
331
332static struct pci_device_id de_pci_tbl[] = {
333 { PCI_VENDOR_ID_DEC, PCI_DEVICE_ID_DEC_TULIP,
334 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
335 { PCI_VENDOR_ID_DEC, PCI_DEVICE_ID_DEC_TULIP_PLUS,
336 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1 },
337 { },
338};
339MODULE_DEVICE_TABLE(pci, de_pci_tbl);
340
341static const char * const media_name[DE_MAX_MEDIA] = {
342 "10baseT auto",
343 "BNC",
344 "AUI",
345 "10baseT-HD",
346 "10baseT-FD"
347};
348
349/* 21040 transceiver register settings:
350 * TP AUTO(unused), BNC(unused), AUI, TP, TP FD*/
351static u16 t21040_csr13[] = { 0, 0, 0x8F09, 0x8F01, 0x8F01, };
352static u16 t21040_csr14[] = { 0, 0, 0x0705, 0xFFFF, 0xFFFD, };
353static u16 t21040_csr15[] = { 0, 0, 0x0006, 0x0000, 0x0000, };
354
355/* 21041 transceiver register settings: TP AUTO, BNC, AUI, TP, TP FD*/
356static u16 t21041_csr13[] = { 0xEF01, 0xEF09, 0xEF09, 0xEF01, 0xEF09, };
357static u16 t21041_csr14[] = { 0xFFFF, 0xF7FD, 0xF7FD, 0x6F3F, 0x6F3D, };
358static u16 t21041_csr15[] = { 0x0008, 0x0006, 0x000E, 0x0008, 0x0008, };
359
360
361#define dr32(reg) readl(de->regs + (reg))
362#define dw32(reg,val) writel((val), de->regs + (reg))
363
364
365static void de_rx_err_acct (struct de_private *de, unsigned rx_tail,
366 u32 status, u32 len)
367{
368 if (netif_msg_rx_err (de))
369 printk (KERN_DEBUG
370 "%s: rx err, slot %d status 0x%x len %d\n",
371 de->dev->name, rx_tail, status, len);
372
373 if ((status & 0x38000300) != 0x0300) {
374 /* Ingore earlier buffers. */
375 if ((status & 0xffff) != 0x7fff) {
376 if (netif_msg_rx_err(de))
377 printk(KERN_WARNING "%s: Oversized Ethernet frame "
378 "spanned multiple buffers, status %8.8x!\n",
379 de->dev->name, status);
380 de->net_stats.rx_length_errors++;
381 }
382 } else if (status & RxError) {
383 /* There was a fatal error. */
384 de->net_stats.rx_errors++; /* end of a packet.*/
385 if (status & 0x0890) de->net_stats.rx_length_errors++;
386 if (status & RxErrCRC) de->net_stats.rx_crc_errors++;
387 if (status & RxErrFIFO) de->net_stats.rx_fifo_errors++;
388 }
389}
390
391static void de_rx (struct de_private *de)
392{
393 unsigned rx_tail = de->rx_tail;
394 unsigned rx_work = DE_RX_RING_SIZE;
395 unsigned drop = 0;
396 int rc;
397
398 while (rx_work--) {
399 u32 status, len;
400 dma_addr_t mapping;
401 struct sk_buff *skb, *copy_skb;
402 unsigned copying_skb, buflen;
403
404 skb = de->rx_skb[rx_tail].skb;
7e0b58f3 405 BUG_ON(!skb);
1da177e4
LT		 406 rmb();
407 status = le32_to_cpu(de->rx_ring[rx_tail].opts1);
408 if (status & DescOwn)
409 break;
410
411 len = ((status >> 16) & 0x7ff) - 4;
412 mapping = de->rx_skb[rx_tail].mapping;
413
414 if (unlikely(drop)) {
415 de->net_stats.rx_dropped++;
416 goto rx_next;
417 }
418
419 if (unlikely((status & 0x38008300) != 0x0300)) {
420 de_rx_err_acct(de, rx_tail, status, len);
421 goto rx_next;
422 }
423
424 copying_skb = (len <= rx_copybreak);
425
426 if (unlikely(netif_msg_rx_status(de)))
427 printk(KERN_DEBUG "%s: rx slot %d status 0x%x len %d copying? %d\n",
428 de->dev->name, rx_tail, status, len,
429 copying_skb);
430
431 buflen = copying_skb ? (len + RX_OFFSET) : de->rx_buf_sz;
432 copy_skb = dev_alloc_skb (buflen);
433 if (unlikely(!copy_skb)) {
434 de->net_stats.rx_dropped++;
435 drop = 1;
436 rx_work = 100;
437 goto rx_next;
438 }
439 copy_skb->dev = de->dev;
440
441 if (!copying_skb) {
442 pci_unmap_single(de->pdev, mapping,
443 buflen, PCI_DMA_FROMDEVICE);
444 skb_put(skb, len);
445
446 mapping =
447 de->rx_skb[rx_tail].mapping =
689be439 448 pci_map_single(de->pdev, copy_skb->data,
1da177e4
LT		 449 buflen, PCI_DMA_FROMDEVICE);
450 de->rx_skb[rx_tail].skb = copy_skb;
451 } else {
452 pci_dma_sync_single_for_cpu(de->pdev, mapping, len, PCI_DMA_FROMDEVICE);
453 skb_reserve(copy_skb, RX_OFFSET);
689be439 454 memcpy(skb_put(copy_skb, len), skb->data, len);
1da177e4
LT		 455
456 pci_dma_sync_single_for_device(de->pdev, mapping, len, PCI_DMA_FROMDEVICE);
457
458 /* We'll reuse the original ring buffer. */
459 skb = copy_skb;
460 }
461
462 skb->protocol = eth_type_trans (skb, de->dev);
463
464 de->net_stats.rx_packets++;
465 de->net_stats.rx_bytes += skb->len;
466 de->dev->last_rx = jiffies;
467 rc = netif_rx (skb);
468 if (rc == NET_RX_DROP)
469 drop = 1;
470
471rx_next:
472 de->rx_ring[rx_tail].opts1 = cpu_to_le32(DescOwn);
473 if (rx_tail == (DE_RX_RING_SIZE - 1))
474 de->rx_ring[rx_tail].opts2 =
475 cpu_to_le32(RingEnd | de->rx_buf_sz);
476 else
477 de->rx_ring[rx_tail].opts2 = cpu_to_le32(de->rx_buf_sz);
478 de->rx_ring[rx_tail].addr1 = cpu_to_le32(mapping);
479 rx_tail = NEXT_RX(rx_tail);
480 }
481
482 if (!rx_work)
483 printk(KERN_WARNING "%s: rx work limit reached\n", de->dev->name);
484
485 de->rx_tail = rx_tail;
486}
487
488static irqreturn_t de_interrupt (int irq, void *dev_instance, struct pt_regs *regs)
489{
490 struct net_device *dev = dev_instance;
491 struct de_private *de = dev->priv;
492 u32 status;
493
494 status = dr32(MacStatus);
495 if ((!(status & (IntrOK|IntrErr))) || (status == 0xFFFF))
496 return IRQ_NONE;
497
498 if (netif_msg_intr(de))
499 printk(KERN_DEBUG "%s: intr, status %08x mode %08x desc %u/%u/%u\n",
500 dev->name, status, dr32(MacMode), de->rx_tail, de->tx_head, de->tx_tail);
501
502 dw32(MacStatus, status);
503
504 if (status & (RxIntr | RxEmpty)) {
505 de_rx(de);
506 if (status & RxEmpty)
507 dw32(RxPoll, NormalRxPoll);
508 }
509
510 spin_lock(&de->lock);
511
512 if (status & (TxIntr | TxEmpty))
513 de_tx(de);
514
515 if (status & (LinkPass | LinkFail))
516 de_media_interrupt(de, status);
517
518 spin_unlock(&de->lock);
519
520 if (status & PciErr) {
521 u16 pci_status;
522
523 pci_read_config_word(de->pdev, PCI_STATUS, &pci_status);
524 pci_write_config_word(de->pdev, PCI_STATUS, pci_status);
525 printk(KERN_ERR "%s: PCI bus error, status=%08x, PCI status=%04x\n",
526 dev->name, status, pci_status);
527 }
528
529 return IRQ_HANDLED;
530}
531
532static void de_tx (struct de_private *de)
533{
534 unsigned tx_head = de->tx_head;
535 unsigned tx_tail = de->tx_tail;
536
537 while (tx_tail != tx_head) {
538 struct sk_buff *skb;
539 u32 status;
540
541 rmb();
542 status = le32_to_cpu(de->tx_ring[tx_tail].opts1);
543 if (status & DescOwn)
544 break;
545
546 skb = de->tx_skb[tx_tail].skb;
7e0b58f3 547 BUG_ON(!skb);
1da177e4
LT		 548 if (unlikely(skb == DE_DUMMY_SKB))
549 goto next;
550
551 if (unlikely(skb == DE_SETUP_SKB)) {
552 pci_unmap_single(de->pdev, de->tx_skb[tx_tail].mapping,
553 sizeof(de->setup_frame), PCI_DMA_TODEVICE);
554 goto next;
555 }
556
557 pci_unmap_single(de->pdev, de->tx_skb[tx_tail].mapping,
558 skb->len, PCI_DMA_TODEVICE);
559
560 if (status & LastFrag) {
561 if (status & TxError) {
562 if (netif_msg_tx_err(de))
563 printk(KERN_DEBUG "%s: tx err, status 0x%x\n",
564 de->dev->name, status);
565 de->net_stats.tx_errors++;
566 if (status & TxOWC)
567 de->net_stats.tx_window_errors++;
568 if (status & TxMaxCol)
569 de->net_stats.tx_aborted_errors++;
570 if (status & TxLinkFail)
571 de->net_stats.tx_carrier_errors++;
572 if (status & TxFIFOUnder)
573 de->net_stats.tx_fifo_errors++;
574 } else {
575 de->net_stats.tx_packets++;
576 de->net_stats.tx_bytes += skb->len;
577 if (netif_msg_tx_done(de))
578 printk(KERN_DEBUG "%s: tx done, slot %d\n", de->dev->name, tx_tail);
579 }
580 dev_kfree_skb_irq(skb);
581 }
582
583next:
584 de->tx_skb[tx_tail].skb = NULL;
585
586 tx_tail = NEXT_TX(tx_tail);
587 }
588
589 de->tx_tail = tx_tail;
590
591 if (netif_queue_stopped(de->dev) && (TX_BUFFS_AVAIL(de) > (DE_TX_RING_SIZE / 4)))
592 netif_wake_queue(de->dev);
593}
594
595static int de_start_xmit (struct sk_buff *skb, struct net_device *dev)
596{
597 struct de_private *de = dev->priv;
598 unsigned int entry, tx_free;
599 u32 mapping, len, flags = FirstFrag | LastFrag;
600 struct de_desc *txd;
601
602 spin_lock_irq(&de->lock);
603
604 tx_free = TX_BUFFS_AVAIL(de);
605 if (tx_free == 0) {
606 netif_stop_queue(dev);
607 spin_unlock_irq(&de->lock);
608 return 1;
609 }
610 tx_free--;
611
612 entry = de->tx_head;
613
614 txd = &de->tx_ring[entry];
615
616 len = skb->len;
617 mapping = pci_map_single(de->pdev, skb->data, len, PCI_DMA_TODEVICE);
618 if (entry == (DE_TX_RING_SIZE - 1))
619 flags |= RingEnd;
620 if (!tx_free || (tx_free == (DE_TX_RING_SIZE / 2)))
621 flags |= TxSwInt;
622 flags |= len;
623 txd->opts2 = cpu_to_le32(flags);
624 txd->addr1 = cpu_to_le32(mapping);
625
626 de->tx_skb[entry].skb = skb;
627 de->tx_skb[entry].mapping = mapping;
628 wmb();
629
630 txd->opts1 = cpu_to_le32(DescOwn);
631 wmb();
632
633 de->tx_head = NEXT_TX(entry);
634 if (netif_msg_tx_queued(de))
635 printk(KERN_DEBUG "%s: tx queued, slot %d, skblen %d\n",
636 dev->name, entry, skb->len);
637
638 if (tx_free == 0)
639 netif_stop_queue(dev);
640
641 spin_unlock_irq(&de->lock);
642
643 /* Trigger an immediate transmit demand. */
644 dw32(TxPoll, NormalTxPoll);
645 dev->trans_start = jiffies;
646
647 return 0;
648}
649
650/* Set or clear the multicast filter for this adaptor.
651 Note that we only use exclusion around actually queueing the
652 new frame, not around filling de->setup_frame. This is non-deterministic
653 when re-entered but still correct. */
654
655#undef set_bit_le
656#define set_bit_le(i,p) do { ((char *)(p))[(i)/8] |= (1<<((i)%8)); } while(0)
657
658static void build_setup_frame_hash(u16 *setup_frm, struct net_device *dev)
659{
660 struct de_private *de = dev->priv;
661 u16 hash_table[32];
662 struct dev_mc_list *mclist;
663 int i;
664 u16 *eaddrs;
665
666 memset(hash_table, 0, sizeof(hash_table));
667 set_bit_le(255, hash_table); /* Broadcast entry */
668 /* This should work on big-endian machines as well. */
669 for (i = 0, mclist = dev->mc_list; mclist && i < dev->mc_count;
670 i++, mclist = mclist->next) {
671 int index = ether_crc_le(ETH_ALEN, mclist->dmi_addr) & 0x1ff;
672
673 set_bit_le(index, hash_table);
674
675 for (i = 0; i < 32; i++) {
676 *setup_frm++ = hash_table[i];
677 *setup_frm++ = hash_table[i];
678 }
679 setup_frm = &de->setup_frame[13*6];
680 }
681
682 /* Fill the final entry with our physical address. */
683 eaddrs = (u16 *)dev->dev_addr;
684 *setup_frm++ = eaddrs[0]; *setup_frm++ = eaddrs[0];
685 *setup_frm++ = eaddrs[1]; *setup_frm++ = eaddrs[1];
686 *setup_frm++ = eaddrs[2]; *setup_frm++ = eaddrs[2];
687}
688
689static void build_setup_frame_perfect(u16 *setup_frm, struct net_device *dev)
690{
691 struct de_private *de = dev->priv;
692 struct dev_mc_list *mclist;
693 int i;
694 u16 *eaddrs;
695
696 /* We have <= 14 addresses so we can use the wonderful
697 16 address perfect filtering of the Tulip. */
698 for (i = 0, mclist = dev->mc_list; i < dev->mc_count;
699 i++, mclist = mclist->next) {
700 eaddrs = (u16 *)mclist->dmi_addr;
701 *setup_frm++ = *eaddrs; *setup_frm++ = *eaddrs++;
702 *setup_frm++ = *eaddrs; *setup_frm++ = *eaddrs++;
703 *setup_frm++ = *eaddrs; *setup_frm++ = *eaddrs++;
704 }
705 /* Fill the unused entries with the broadcast address. */
706 memset(setup_frm, 0xff, (15-i)*12);
707 setup_frm = &de->setup_frame[15*6];
708
709 /* Fill the final entry with our physical address. */
710 eaddrs = (u16 *)dev->dev_addr;
711 *setup_frm++ = eaddrs[0]; *setup_frm++ = eaddrs[0];
712 *setup_frm++ = eaddrs[1]; *setup_frm++ = eaddrs[1];
713 *setup_frm++ = eaddrs[2]; *setup_frm++ = eaddrs[2];
714}
715
716
717static void __de_set_rx_mode (struct net_device *dev)
718{
719 struct de_private *de = dev->priv;
720 u32 macmode;
721 unsigned int entry;
722 u32 mapping;
723 struct de_desc *txd;
724 struct de_desc *dummy_txd = NULL;
725
726 macmode = dr32(MacMode) & ~(AcceptAllMulticast | AcceptAllPhys);
727
728 if (dev->flags & IFF_PROMISC) { /* Set promiscuous. */
729 macmode |= AcceptAllMulticast | AcceptAllPhys;
730 goto out;
731 }
732
733 if ((dev->mc_count > 1000) || (dev->flags & IFF_ALLMULTI)) {
734 /* Too many to filter well -- accept all multicasts. */
735 macmode |= AcceptAllMulticast;
736 goto out;
737 }
738
739 /* Note that only the low-address shortword of setup_frame is valid!
740 The values are doubled for big-endian architectures. */
741 if (dev->mc_count > 14) /* Must use a multicast hash table. */
742 build_setup_frame_hash (de->setup_frame, dev);
743 else
744 build_setup_frame_perfect (de->setup_frame, dev);
745
746 /*
747 * Now add this frame to the Tx list.
748 */
749
750 entry = de->tx_head;
751
752 /* Avoid a chip errata by prefixing a dummy entry. */
753 if (entry != 0) {
754 de->tx_skb[entry].skb = DE_DUMMY_SKB;
755
756 dummy_txd = &de->tx_ring[entry];
757 dummy_txd->opts2 = (entry == (DE_TX_RING_SIZE - 1)) ?
758 cpu_to_le32(RingEnd) : 0;
759 dummy_txd->addr1 = 0;
760
761 /* Must set DescOwned later to avoid race with chip */
762
763 entry = NEXT_TX(entry);
764 }
765
766 de->tx_skb[entry].skb = DE_SETUP_SKB;
767 de->tx_skb[entry].mapping = mapping =
768 pci_map_single (de->pdev, de->setup_frame,
769 sizeof (de->setup_frame), PCI_DMA_TODEVICE);
770
771 /* Put the setup frame on the Tx list. */
772 txd = &de->tx_ring[entry];
773 if (entry == (DE_TX_RING_SIZE - 1))
774 txd->opts2 = cpu_to_le32(SetupFrame | RingEnd | sizeof (de->setup_frame));
775 else
776 txd->opts2 = cpu_to_le32(SetupFrame | sizeof (de->setup_frame));
777 txd->addr1 = cpu_to_le32(mapping);
778 wmb();
779
780 txd->opts1 = cpu_to_le32(DescOwn);
781 wmb();
782
783 if (dummy_txd) {
784 dummy_txd->opts1 = cpu_to_le32(DescOwn);
785 wmb();
786 }
787
788 de->tx_head = NEXT_TX(entry);
789
7e0b58f3 790 BUG_ON(TX_BUFFS_AVAIL(de) < 0);
1da177e4
LT		 791 if (TX_BUFFS_AVAIL(de) == 0)
792 netif_stop_queue(dev);
793
794 /* Trigger an immediate transmit demand. */
795 dw32(TxPoll, NormalTxPoll);
796
797out:
798 if (macmode != dr32(MacMode))
799 dw32(MacMode, macmode);
800}
801
802static void de_set_rx_mode (struct net_device *dev)
803{
804 unsigned long flags;
805 struct de_private *de = dev->priv;
806
807 spin_lock_irqsave (&de->lock, flags);
808 __de_set_rx_mode(dev);
809 spin_unlock_irqrestore (&de->lock, flags);
810}
811
812static inline void de_rx_missed(struct de_private *de, u32 rx_missed)
813{
814 if (unlikely(rx_missed & RxMissedOver))
815 de->net_stats.rx_missed_errors += RxMissedMask;
816 else
817 de->net_stats.rx_missed_errors += (rx_missed & RxMissedMask);
818}
819
820static void __de_get_stats(struct de_private *de)
821{
822 u32 tmp = dr32(RxMissed); /* self-clearing */
823
824 de_rx_missed(de, tmp);
825}
826
827static struct net_device_stats *de_get_stats(struct net_device *dev)
828{
829 struct de_private *de = dev->priv;
830
831 /* The chip only need report frame silently dropped. */
832 spin_lock_irq(&de->lock);
833 if (netif_running(dev) && netif_device_present(dev))
834 __de_get_stats(de);
835 spin_unlock_irq(&de->lock);
836
837 return &de->net_stats;
838}
839
840static inline int de_is_running (struct de_private *de)
841{
842 return (dr32(MacStatus) & (RxState | TxState)) ? 1 : 0;
843}
844
845static void de_stop_rxtx (struct de_private *de)
846{
847 u32 macmode;
848 unsigned int work = 1000;
849
850 macmode = dr32(MacMode);
851 if (macmode & RxTx) {
852 dw32(MacMode, macmode & ~RxTx);
853 dr32(MacMode);
854 }
855
856 while (--work > 0) {
857 if (!de_is_running(de))
858 return;
859 cpu_relax();
860 }
861
862 printk(KERN_WARNING "%s: timeout expired stopping DMA\n", de->dev->name);
863}
864
865static inline void de_start_rxtx (struct de_private *de)
866{
867 u32 macmode;
868
869 macmode = dr32(MacMode);
870 if ((macmode & RxTx) != RxTx) {
871 dw32(MacMode, macmode | RxTx);
872 dr32(MacMode);
873 }
874}
875
876static void de_stop_hw (struct de_private *de)
877{
878
879 udelay(5);
880 dw32(IntrMask, 0);
881
882 de_stop_rxtx(de);
883
884 dw32(MacStatus, dr32(MacStatus));
885
886 udelay(10);
887
888 de->rx_tail = 0;
889 de->tx_head = de->tx_tail = 0;
890}
891
892static void de_link_up(struct de_private *de)
893{
894 if (!netif_carrier_ok(de->dev)) {
895 netif_carrier_on(de->dev);
896 if (netif_msg_link(de))
897 printk(KERN_INFO "%s: link up, media %s\n",
898 de->dev->name, media_name[de->media_type]);
899 }
900}
901
902static void de_link_down(struct de_private *de)
903{
904 if (netif_carrier_ok(de->dev)) {
905 netif_carrier_off(de->dev);
906 if (netif_msg_link(de))
907 printk(KERN_INFO "%s: link down\n", de->dev->name);
908 }
909}
910
911static void de_set_media (struct de_private *de)
912{
913 unsigned media = de->media_type;
914 u32 macmode = dr32(MacMode);
915
7e0b58f3 916 BUG_ON(de_is_running(de));
1da177e4
LT		 917
918 if (de->de21040)
919 dw32(CSR11, FULL_DUPLEX_MAGIC);
920 dw32(CSR13, 0); /* Reset phy */
921 dw32(CSR14, de->media[media].csr14);
922 dw32(CSR15, de->media[media].csr15);
923 dw32(CSR13, de->media[media].csr13);
924
925 /* must delay 10ms before writing to other registers,
926 * especially CSR6
927 */
928 mdelay(10);
929
930 if (media == DE_MEDIA_TP_FD)
931 macmode |= FullDuplex;
932 else
933 macmode &= ~FullDuplex;
934
935 if (netif_msg_link(de)) {
936 printk(KERN_INFO "%s: set link %s\n"
937 KERN_INFO "%s: mode 0x%x, sia 0x%x,0x%x,0x%x,0x%x\n"
938 KERN_INFO "%s: set mode 0x%x, set sia 0x%x,0x%x,0x%x\n",
939 de->dev->name, media_name[media],
940 de->dev->name, dr32(MacMode), dr32(SIAStatus),
941 dr32(CSR13), dr32(CSR14), dr32(CSR15),
942 de->dev->name, macmode, de->media[media].csr13,
943 de->media[media].csr14, de->media[media].csr15);
944 }
945 if (macmode != dr32(MacMode))
946 dw32(MacMode, macmode);
947}
948
949static void de_next_media (struct de_private *de, u32 *media,
950 unsigned int n_media)
951{
952 unsigned int i;
953
954 for (i = 0; i < n_media; i++) {
955 if (de_ok_to_advertise(de, media[i])) {
956 de->media_type = media[i];
957 return;
958 }
959 }
960}
961
962static void de21040_media_timer (unsigned long data)
963{
964 struct de_private *de = (struct de_private *) data;
965 struct net_device *dev = de->dev;
966 u32 status = dr32(SIAStatus);
967 unsigned int carrier;
968 unsigned long flags;
969
970 carrier = (status & NetCxnErr) ? 0 : 1;
971
972 if (carrier) {
973 if (de->media_type != DE_MEDIA_AUI && (status & LinkFailStatus))
974 goto no_link_yet;
975
976 de->media_timer.expires = jiffies + DE_TIMER_LINK;
977 add_timer(&de->media_timer);
978 if (!netif_carrier_ok(dev))
979 de_link_up(de);
980 else
981 if (netif_msg_timer(de))
982 printk(KERN_INFO "%s: %s link ok, status %x\n",
983 dev->name, media_name[de->media_type],
984 status);
985 return;
986 }
987
988 de_link_down(de);
989
990 if (de->media_lock)
991 return;
992
993 if (de->media_type == DE_MEDIA_AUI) {
994 u32 next_state = DE_MEDIA_TP;
995 de_next_media(de, &next_state, 1);
996 } else {
997 u32 next_state = DE_MEDIA_AUI;
998 de_next_media(de, &next_state, 1);
999 }
1000
1001 spin_lock_irqsave(&de->lock, flags);
1002 de_stop_rxtx(de);
1003 spin_unlock_irqrestore(&de->lock, flags);
1004 de_set_media(de);
1005 de_start_rxtx(de);
1006
1007no_link_yet:
1008 de->media_timer.expires = jiffies + DE_TIMER_NO_LINK;
1009 add_timer(&de->media_timer);
1010
1011 if (netif_msg_timer(de))
1012 printk(KERN_INFO "%s: no link, trying media %s, status %x\n",
1013 dev->name, media_name[de->media_type], status);
1014}
1015
1016static unsigned int de_ok_to_advertise (struct de_private *de, u32 new_media)
1017{
1018 switch (new_media) {
1019 case DE_MEDIA_TP_AUTO:
1020 if (!(de->media_advertise & ADVERTISED_Autoneg))
1021 return 0;
1022 if (!(de->media_advertise & (ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full)))
1023 return 0;
1024 break;
1025 case DE_MEDIA_BNC:
1026 if (!(de->media_advertise & ADVERTISED_BNC))
1027 return 0;
1028 break;
1029 case DE_MEDIA_AUI:
1030 if (!(de->media_advertise & ADVERTISED_AUI))
1031 return 0;
1032 break;
1033 case DE_MEDIA_TP:
1034 if (!(de->media_advertise & ADVERTISED_10baseT_Half))
1035 return 0;
1036 break;
1037 case DE_MEDIA_TP_FD:
1038 if (!(de->media_advertise & ADVERTISED_10baseT_Full))
1039 return 0;
1040 break;
1041 }
1042
1043 return 1;
1044}
1045
1046static void de21041_media_timer (unsigned long data)
1047{
1048 struct de_private *de = (struct de_private *) data;
1049 struct net_device *dev = de->dev;
1050 u32 status = dr32(SIAStatus);
1051 unsigned int carrier;
1052 unsigned long flags;
1053
1054 carrier = (status & NetCxnErr) ? 0 : 1;
1055
1056 if (carrier) {
1057 if ((de->media_type == DE_MEDIA_TP_AUTO ||
1058 de->media_type == DE_MEDIA_TP ||
1059 de->media_type == DE_MEDIA_TP_FD) &&
1060 (status & LinkFailStatus))
1061 goto no_link_yet;
1062
1063 de->media_timer.expires = jiffies + DE_TIMER_LINK;
1064 add_timer(&de->media_timer);
1065 if (!netif_carrier_ok(dev))
1066 de_link_up(de);
1067 else
1068 if (netif_msg_timer(de))
1069 printk(KERN_INFO "%s: %s link ok, mode %x status %x\n",
1070 dev->name, media_name[de->media_type],
1071 dr32(MacMode), status);
1072 return;
1073 }
1074
1075 de_link_down(de);
1076
1077 /* if media type locked, don't switch media */
1078 if (de->media_lock)
1079 goto set_media;
1080
1081 /* if activity detected, use that as hint for new media type */
1082 if (status & NonselPortActive) {
1083 unsigned int have_media = 1;
1084
1085 /* if AUI/BNC selected, then activity is on TP port */
1086 if (de->media_type == DE_MEDIA_AUI ||
1087 de->media_type == DE_MEDIA_BNC) {
1088 if (de_ok_to_advertise(de, DE_MEDIA_TP_AUTO))
1089 de->media_type = DE_MEDIA_TP_AUTO;
1090 else
1091 have_media = 0;
1092 }
1093
1094 /* TP selected. If there is only TP and BNC, then it's BNC */
1095 else if (((de->media_supported & DE_AUI_BNC) == SUPPORTED_BNC) &&
1096 de_ok_to_advertise(de, DE_MEDIA_BNC))
1097 de->media_type = DE_MEDIA_BNC;
1098
1099 /* TP selected. If there is only TP and AUI, then it's AUI */
1100 else if (((de->media_supported & DE_AUI_BNC) == SUPPORTED_AUI) &&
1101 de_ok_to_advertise(de, DE_MEDIA_AUI))
1102 de->media_type = DE_MEDIA_AUI;
1103
1104 /* otherwise, ignore the hint */
1105 else
1106 have_media = 0;
1107
1108 if (have_media)
1109 goto set_media;
1110 }
1111
1112 /*
1113 * Absent or ambiguous activity hint, move to next advertised
1114 * media state. If de->media_type is left unchanged, this
1115 * simply resets the PHY and reloads the current media settings.
1116 */
1117 if (de->media_type == DE_MEDIA_AUI) {
1118 u32 next_states[] = { DE_MEDIA_BNC, DE_MEDIA_TP_AUTO };
1119 de_next_media(de, next_states, ARRAY_SIZE(next_states));
1120 } else if (de->media_type == DE_MEDIA_BNC) {
1121 u32 next_states[] = { DE_MEDIA_TP_AUTO, DE_MEDIA_AUI };
1122 de_next_media(de, next_states, ARRAY_SIZE(next_states));
1123 } else {
1124 u32 next_states[] = { DE_MEDIA_AUI, DE_MEDIA_BNC, DE_MEDIA_TP_AUTO };
1125 de_next_media(de, next_states, ARRAY_SIZE(next_states));
1126 }
1127
1128set_media:
1129 spin_lock_irqsave(&de->lock, flags);
1130 de_stop_rxtx(de);
1131 spin_unlock_irqrestore(&de->lock, flags);
1132 de_set_media(de);
1133 de_start_rxtx(de);
1134
1135no_link_yet:
1136 de->media_timer.expires = jiffies + DE_TIMER_NO_LINK;
1137 add_timer(&de->media_timer);
1138
1139 if (netif_msg_timer(de))
1140 printk(KERN_INFO "%s: no link, trying media %s, status %x\n",
1141 dev->name, media_name[de->media_type], status);
1142}
1143
1144static void de_media_interrupt (struct de_private *de, u32 status)
1145{
1146 if (status & LinkPass) {
1147 de_link_up(de);
1148 mod_timer(&de->media_timer, jiffies + DE_TIMER_LINK);
1149 return;
1150 }
1151
7e0b58f3 1152 BUG_ON(!(status & LinkFail));
1da177e4
LT		 1153
1154 if (netif_carrier_ok(de->dev)) {
1155 de_link_down(de);
1156 mod_timer(&de->media_timer, jiffies + DE_TIMER_NO_LINK);
1157 }
1158}
1159
1160static int de_reset_mac (struct de_private *de)
1161{
1162 u32 status, tmp;
1163
1164 /*
1165 * Reset MAC. de4x5.c and tulip.c examined for "advice"
1166 * in this area.
1167 */
1168
1169 if (dr32(BusMode) == 0xffffffff)
1170 return -EBUSY;
1171
1172 /* Reset the chip, holding bit 0 set at least 50 PCI cycles. */
1173 dw32 (BusMode, CmdReset);
1174 mdelay (1);
1175
1176 dw32 (BusMode, de_bus_mode);
1177 mdelay (1);
1178
1179 for (tmp = 0; tmp < 5; tmp++) {
1180 dr32 (BusMode);
1181 mdelay (1);
1182 }
1183
1184 mdelay (1);
1185
1186 status = dr32(MacStatus);
1187 if (status & (RxState | TxState))
1188 return -EBUSY;
1189 if (status == 0xffffffff)
1190 return -ENODEV;
1191 return 0;
1192}
1193
1194static void de_adapter_wake (struct de_private *de)
1195{
1196 u32 pmctl;
1197
1198 if (de->de21040)
1199 return;
1200
1201 pci_read_config_dword(de->pdev, PCIPM, &pmctl);
1202 if (pmctl & PM_Mask) {
1203 pmctl &= ~PM_Mask;
1204 pci_write_config_dword(de->pdev, PCIPM, pmctl);
1205
1206 /* de4x5.c delays, so we do too */
1207 msleep(10);
1208 }
1209}
1210
1211static void de_adapter_sleep (struct de_private *de)
1212{
1213 u32 pmctl;
1214
1215 if (de->de21040)
1216 return;
1217
1218 pci_read_config_dword(de->pdev, PCIPM, &pmctl);
1219 pmctl |= PM_Sleep;
1220 pci_write_config_dword(de->pdev, PCIPM, pmctl);
1221}
1222
1223static int de_init_hw (struct de_private *de)
1224{
1225 struct net_device *dev = de->dev;
1226 u32 macmode;
1227 int rc;
1228
1229 de_adapter_wake(de);
1230
1231 macmode = dr32(MacMode) & ~MacModeClear;
1232
1233 rc = de_reset_mac(de);
1234 if (rc)
1235 return rc;
1236
1237 de_set_media(de); /* reset phy */
1238
1239 dw32(RxRingAddr, de->ring_dma);
1240 dw32(TxRingAddr, de->ring_dma + (sizeof(struct de_desc) * DE_RX_RING_SIZE));
1241
1242 dw32(MacMode, RxTx | macmode);
1243
1244 dr32(RxMissed); /* self-clearing */
1245
1246 dw32(IntrMask, de_intr_mask);
1247
1248 de_set_rx_mode(dev);
1249
1250 return 0;
1251}
1252
1253static int de_refill_rx (struct de_private *de)
1254{
1255 unsigned i;
1256
1257 for (i = 0; i < DE_RX_RING_SIZE; i++) {
1258 struct sk_buff *skb;
1259
1260 skb = dev_alloc_skb(de->rx_buf_sz);
1261 if (!skb)
1262 goto err_out;
1263
1264 skb->dev = de->dev;
1265
1266 de->rx_skb[i].mapping = pci_map_single(de->pdev,
689be439 1267 skb->data, de->rx_buf_sz, PCI_DMA_FROMDEVICE);
1da177e4
LT		 1268 de->rx_skb[i].skb = skb;
1269
1270 de->rx_ring[i].opts1 = cpu_to_le32(DescOwn);
1271 if (i == (DE_RX_RING_SIZE - 1))
1272 de->rx_ring[i].opts2 =
1273 cpu_to_le32(RingEnd | de->rx_buf_sz);
1274 else
1275 de->rx_ring[i].opts2 = cpu_to_le32(de->rx_buf_sz);
1276 de->rx_ring[i].addr1 = cpu_to_le32(de->rx_skb[i].mapping);
1277 de->rx_ring[i].addr2 = 0;
1278 }
1279
1280 return 0;
1281
1282err_out:
1283 de_clean_rings(de);
1284 return -ENOMEM;
1285}
1286
1287static int de_init_rings (struct de_private *de)
1288{
1289 memset(de->tx_ring, 0, sizeof(struct de_desc) * DE_TX_RING_SIZE);
1290 de->tx_ring[DE_TX_RING_SIZE - 1].opts2 = cpu_to_le32(RingEnd);
1291
1292 de->rx_tail = 0;
1293 de->tx_head = de->tx_tail = 0;
1294
1295 return de_refill_rx (de);
1296}
1297
1298static int de_alloc_rings (struct de_private *de)
1299{
1300 de->rx_ring = pci_alloc_consistent(de->pdev, DE_RING_BYTES, &de->ring_dma);
1301 if (!de->rx_ring)
1302 return -ENOMEM;
1303 de->tx_ring = &de->rx_ring[DE_RX_RING_SIZE];
1304 return de_init_rings(de);
1305}
1306
1307static void de_clean_rings (struct de_private *de)
1308{
1309 unsigned i;
1310
1311 memset(de->rx_ring, 0, sizeof(struct de_desc) * DE_RX_RING_SIZE);
1312 de->rx_ring[DE_RX_RING_SIZE - 1].opts2 = cpu_to_le32(RingEnd);
1313 wmb();
1314 memset(de->tx_ring, 0, sizeof(struct de_desc) * DE_TX_RING_SIZE);
1315 de->tx_ring[DE_TX_RING_SIZE - 1].opts2 = cpu_to_le32(RingEnd);
1316 wmb();
1317
1318 for (i = 0; i < DE_RX_RING_SIZE; i++) {
1319 if (de->rx_skb[i].skb) {
1320 pci_unmap_single(de->pdev, de->rx_skb[i].mapping,
1321 de->rx_buf_sz, PCI_DMA_FROMDEVICE);
1322 dev_kfree_skb(de->rx_skb[i].skb);
1323 }
1324 }
1325
1326 for (i = 0; i < DE_TX_RING_SIZE; i++) {
1327 struct sk_buff *skb = de->tx_skb[i].skb;
1328 if ((skb) && (skb != DE_DUMMY_SKB)) {
1329 if (skb != DE_SETUP_SKB) {
1330 dev_kfree_skb(skb);
1331 de->net_stats.tx_dropped++;
1332 pci_unmap_single(de->pdev,
1333 de->tx_skb[i].mapping,
1334 skb->len, PCI_DMA_TODEVICE);
1335 } else {
1336 pci_unmap_single(de->pdev,
1337 de->tx_skb[i].mapping,
1338 sizeof(de->setup_frame),
1339 PCI_DMA_TODEVICE);
1340 }
1341 }
1342 }
1343
1344 memset(&de->rx_skb, 0, sizeof(struct ring_info) * DE_RX_RING_SIZE);
1345 memset(&de->tx_skb, 0, sizeof(struct ring_info) * DE_TX_RING_SIZE);
1346}
1347
1348static void de_free_rings (struct de_private *de)
1349{
1350 de_clean_rings(de);
1351 pci_free_consistent(de->pdev, DE_RING_BYTES, de->rx_ring, de->ring_dma);
1352 de->rx_ring = NULL;
1353 de->tx_ring = NULL;
1354}
1355
1356static int de_open (struct net_device *dev)
1357{
1358 struct de_private *de = dev->priv;
1359 int rc;
1da177e4
LT		 1360
1361 if (netif_msg_ifup(de))
1362 printk(KERN_DEBUG "%s: enabling interface\n", dev->name);
1363
1364 de->rx_buf_sz = (dev->mtu <= 1500 ? PKT_BUF_SZ : dev->mtu + 32);
1365
1366 rc = de_alloc_rings(de);
1367 if (rc) {
1368 printk(KERN_ERR "%s: ring allocation failure, err=%d\n",
1369 dev->name, rc);
1370 return rc;
1371 }
1372
3f735b76 1373 dw32(IntrMask, 0);
1da177e4
LT		 1374
1375 rc = request_irq(dev->irq, de_interrupt, SA_SHIRQ, dev->name, dev);
1376 if (rc) {
1377 printk(KERN_ERR "%s: IRQ %d request failure, err=%d\n",
1378 dev->name, dev->irq, rc);
3f735b76
FR		 1379 goto err_out_free;
1380 }
1381
1382 rc = de_init_hw(de);
1383 if (rc) {
1384 printk(KERN_ERR "%s: h/w init failure, err=%d\n",
1385 dev->name, rc);
1386 goto err_out_free_irq;
1da177e4
LT		 1387 }
1388
1389 netif_start_queue(dev);
1390 mod_timer(&de->media_timer, jiffies + DE_TIMER_NO_LINK);
1391
1392 return 0;
1393
3f735b76
FR		 1394err_out_free_irq:
1395 free_irq(dev->irq, dev);
1da177e4
LT		 1396err_out_free:
1397 de_free_rings(de);
1398 return rc;
1399}
1400
1401static int de_close (struct net_device *dev)
1402{
1403 struct de_private *de = dev->priv;
1404 unsigned long flags;
1405
1406 if (netif_msg_ifdown(de))
1407 printk(KERN_DEBUG "%s: disabling interface\n", dev->name);
1408
1409 del_timer_sync(&de->media_timer);
1410
1411 spin_lock_irqsave(&de->lock, flags);
1412 de_stop_hw(de);
1413 netif_stop_queue(dev);
1414 netif_carrier_off(dev);
1415 spin_unlock_irqrestore(&de->lock, flags);
1416
1417 free_irq(dev->irq, dev);
1418
1419 de_free_rings(de);
1420 de_adapter_sleep(de);
1421 pci_disable_device(de->pdev);
1422 return 0;
1423}
1424
1425static void de_tx_timeout (struct net_device *dev)
1426{
1427 struct de_private *de = dev->priv;
1428
1429 printk(KERN_DEBUG "%s: NIC status %08x mode %08x sia %08x desc %u/%u/%u\n",
1430 dev->name, dr32(MacStatus), dr32(MacMode), dr32(SIAStatus),
1431 de->rx_tail, de->tx_head, de->tx_tail);
1432
1433 del_timer_sync(&de->media_timer);
1434
1435 disable_irq(dev->irq);
1436 spin_lock_irq(&de->lock);
1437
1438 de_stop_hw(de);
1439 netif_stop_queue(dev);
1440 netif_carrier_off(dev);
1441
1442 spin_unlock_irq(&de->lock);
1443 enable_irq(dev->irq);
1444
1445 /* Update the error counts. */
1446 __de_get_stats(de);
1447
1448 synchronize_irq(dev->irq);
1449 de_clean_rings(de);
1450
39bf4295
FR		 1451 de_init_rings(de);
1452
1da177e4
LT		 1453 de_init_hw(de);
1454
1455 netif_wake_queue(dev);
1456}
1457
1458static void __de_get_regs(struct de_private *de, u8 *buf)
1459{
1460 int i;
1461 u32 *rbuf = (u32 *)buf;
1462
1463 /* read all CSRs */
1464 for (i = 0; i < DE_NUM_REGS; i++)
1465 rbuf[i] = dr32(i * 8);
1466
1467 /* handle self-clearing RxMissed counter, CSR8 */
1468 de_rx_missed(de, rbuf[8]);
1469}
1470
1471static int __de_get_settings(struct de_private *de, struct ethtool_cmd *ecmd)
1472{
1473 ecmd->supported = de->media_supported;
1474 ecmd->transceiver = XCVR_INTERNAL;
1475 ecmd->phy_address = 0;
1476 ecmd->advertising = de->media_advertise;
1477
1478 switch (de->media_type) {
1479 case DE_MEDIA_AUI:
1480 ecmd->port = PORT_AUI;
1481 ecmd->speed = 5;
1482 break;
1483 case DE_MEDIA_BNC:
1484 ecmd->port = PORT_BNC;
1485 ecmd->speed = 2;
1486 break;
1487 default:
1488 ecmd->port = PORT_TP;
1489 ecmd->speed = SPEED_10;
1490 break;
1491 }
1492
1493 if (dr32(MacMode) & FullDuplex)
1494 ecmd->duplex = DUPLEX_FULL;
1495 else
1496 ecmd->duplex = DUPLEX_HALF;
1497
1498 if (de->media_lock)
1499 ecmd->autoneg = AUTONEG_DISABLE;
1500 else
1501 ecmd->autoneg = AUTONEG_ENABLE;
1502
1503 /* ignore maxtxpkt, maxrxpkt for now */
1504
1505 return 0;
1506}
1507
1508static int __de_set_settings(struct de_private *de, struct ethtool_cmd *ecmd)
1509{
1510 u32 new_media;
1511 unsigned int media_lock;
1512
1513 if (ecmd->speed != SPEED_10 && ecmd->speed != 5 && ecmd->speed != 2)
1514 return -EINVAL;
1515 if (de->de21040 && ecmd->speed == 2)
1516 return -EINVAL;
1517 if (ecmd->duplex != DUPLEX_HALF && ecmd->duplex != DUPLEX_FULL)
1518 return -EINVAL;
1519 if (ecmd->port != PORT_TP && ecmd->port != PORT_AUI && ecmd->port != PORT_BNC)
1520 return -EINVAL;
1521 if (de->de21040 && ecmd->port == PORT_BNC)
1522 return -EINVAL;
1523 if (ecmd->transceiver != XCVR_INTERNAL)
1524 return -EINVAL;
1525 if (ecmd->autoneg != AUTONEG_DISABLE && ecmd->autoneg != AUTONEG_ENABLE)
1526 return -EINVAL;
1527 if (ecmd->advertising & ~de->media_supported)
1528 return -EINVAL;
1529 if (ecmd->autoneg == AUTONEG_ENABLE &&
1530 (!(ecmd->advertising & ADVERTISED_Autoneg)))
1531 return -EINVAL;
1532
1533 switch (ecmd->port) {
1534 case PORT_AUI:
1535 new_media = DE_MEDIA_AUI;
1536 if (!(ecmd->advertising & ADVERTISED_AUI))
1537 return -EINVAL;
1538 break;
1539 case PORT_BNC:
1540 new_media = DE_MEDIA_BNC;
1541 if (!(ecmd->advertising & ADVERTISED_BNC))
1542 return -EINVAL;
1543 break;
1544 default:
1545 if (ecmd->autoneg == AUTONEG_ENABLE)
1546 new_media = DE_MEDIA_TP_AUTO;
1547 else if (ecmd->duplex == DUPLEX_FULL)
1548 new_media = DE_MEDIA_TP_FD;
1549 else
1550 new_media = DE_MEDIA_TP;
1551 if (!(ecmd->advertising & ADVERTISED_TP))
1552 return -EINVAL;
1553 if (!(ecmd->advertising & (ADVERTISED_10baseT_Full | ADVERTISED_10baseT_Half)))
1554 return -EINVAL;
1555 break;
1556 }
1557
1558 media_lock = (ecmd->autoneg == AUTONEG_ENABLE) ? 0 : 1;
1559
1560 if ((new_media == de->media_type) &&
1561 (media_lock == de->media_lock) &&
1562 (ecmd->advertising == de->media_advertise))
1563 return 0; /* nothing to change */
1564
1565 de_link_down(de);
1566 de_stop_rxtx(de);
1567
1568 de->media_type = new_media;
1569 de->media_lock = media_lock;
1570 de->media_advertise = ecmd->advertising;
1571 de_set_media(de);
1572
1573 return 0;
1574}
1575
1576static void de_get_drvinfo (struct net_device *dev,struct ethtool_drvinfo *info)
1577{
1578 struct de_private *de = dev->priv;
1579
1580 strcpy (info->driver, DRV_NAME);
1581 strcpy (info->version, DRV_VERSION);
1582 strcpy (info->bus_info, pci_name(de->pdev));
1583 info->eedump_len = DE_EEPROM_SIZE;
1584}
1585
1586static int de_get_regs_len(struct net_device *dev)
1587{
1588 return DE_REGS_SIZE;
1589}
1590
1591static int de_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
1592{
1593 struct de_private *de = dev->priv;
1594 int rc;
1595
1596 spin_lock_irq(&de->lock);
1597 rc = __de_get_settings(de, ecmd);
1598 spin_unlock_irq(&de->lock);
1599
1600 return rc;
1601}
1602
1603static int de_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
1604{
1605 struct de_private *de = dev->priv;
1606 int rc;
1607
1608 spin_lock_irq(&de->lock);
1609 rc = __de_set_settings(de, ecmd);
1610 spin_unlock_irq(&de->lock);
1611
1612 return rc;
1613}
1614
1615static u32 de_get_msglevel(struct net_device *dev)
1616{
1617 struct de_private *de = dev->priv;
1618
1619 return de->msg_enable;
1620}
1621
1622static void de_set_msglevel(struct net_device *dev, u32 msglvl)
1623{
1624 struct de_private *de = dev->priv;
1625
1626 de->msg_enable = msglvl;
1627}
1628
1629static int de_get_eeprom(struct net_device *dev,
1630 struct ethtool_eeprom *eeprom, u8 *data)
1631{
1632 struct de_private *de = dev->priv;
1633
1634 if (!de->ee_data)
1635 return -EOPNOTSUPP;
1636 if ((eeprom->offset != 0) || (eeprom->magic != 0) ||
1637 (eeprom->len != DE_EEPROM_SIZE))
1638 return -EINVAL;
1639 memcpy(data, de->ee_data, eeprom->len);
1640
1641 return 0;
1642}
1643
1644static int de_nway_reset(struct net_device *dev)
1645{
1646 struct de_private *de = dev->priv;
1647 u32 status;
1648
1649 if (de->media_type != DE_MEDIA_TP_AUTO)
1650 return -EINVAL;
1651 if (netif_carrier_ok(de->dev))
1652 de_link_down(de);
1653
1654 status = dr32(SIAStatus);
1655 dw32(SIAStatus, (status & ~NWayState) | NWayRestart);
1656 if (netif_msg_link(de))
1657 printk(KERN_INFO "%s: link nway restart, status %x,%x\n",
1658 de->dev->name, status, dr32(SIAStatus));
1659 return 0;
1660}
1661
1662static void de_get_regs(struct net_device *dev, struct ethtool_regs *regs,
1663 void *data)
1664{
1665 struct de_private *de = dev->priv;
1666
1667 regs->version = (DE_REGS_VER << 2) | de->de21040;
1668
1669 spin_lock_irq(&de->lock);
1670 __de_get_regs(de, data);
1671 spin_unlock_irq(&de->lock);
1672}
1673
1674static struct ethtool_ops de_ethtool_ops = {
1675 .get_link = ethtool_op_get_link,
1676 .get_tx_csum = ethtool_op_get_tx_csum,
1677 .get_sg = ethtool_op_get_sg,
1678 .get_drvinfo = de_get_drvinfo,
1679 .get_regs_len = de_get_regs_len,
1680 .get_settings = de_get_settings,
1681 .set_settings = de_set_settings,
1682 .get_msglevel = de_get_msglevel,
1683 .set_msglevel = de_set_msglevel,
1684 .get_eeprom = de_get_eeprom,
1685 .nway_reset = de_nway_reset,
1686 .get_regs = de_get_regs,
1687};
1688
1689static void __init de21040_get_mac_address (struct de_private *de)
1690{
1691 unsigned i;
1692
1693 dw32 (ROMCmd, 0); /* Reset the pointer with a dummy write. */
1694
1695 for (i = 0; i < 6; i++) {
1696 int value, boguscnt = 100000;
1697 do
1698 value = dr32(ROMCmd);
1699 while (value < 0 && --boguscnt > 0);
1700 de->dev->dev_addr[i] = value;
1701 udelay(1);
1702 if (boguscnt <= 0)
1703 printk(KERN_WARNING PFX "timeout reading 21040 MAC address byte %u\n", i);
1704 }
1705}
1706
1707static void __init de21040_get_media_info(struct de_private *de)
1708{
1709 unsigned int i;
1710
1711 de->media_type = DE_MEDIA_TP;
1712 de->media_supported |= SUPPORTED_TP | SUPPORTED_10baseT_Full |
1713 SUPPORTED_10baseT_Half | SUPPORTED_AUI;
1714 de->media_advertise = de->media_supported;
1715
1716 for (i = 0; i < DE_MAX_MEDIA; i++) {
1717 switch (i) {
1718 case DE_MEDIA_AUI:
1719 case DE_MEDIA_TP:
1720 case DE_MEDIA_TP_FD:
1721 de->media[i].type = i;
1722 de->media[i].csr13 = t21040_csr13[i];
1723 de->media[i].csr14 = t21040_csr14[i];
1724 de->media[i].csr15 = t21040_csr15[i];
1725 break;
1726 default:
1727 de->media[i].type = DE_MEDIA_INVALID;
1728 break;
1729 }
1730 }
1731}
1732
1733/* Note: this routine returns extra data bits for size detection. */
1734static unsigned __init tulip_read_eeprom(void __iomem *regs, int location, int addr_len)
1735{
1736 int i;
1737 unsigned retval = 0;
1738 void __iomem *ee_addr = regs + ROMCmd;
1739 int read_cmd = location | (EE_READ_CMD << addr_len);
1740
1741 writel(EE_ENB & ~EE_CS, ee_addr);
1742 writel(EE_ENB, ee_addr);
1743
1744 /* Shift the read command bits out. */
1745 for (i = 4 + addr_len; i >= 0; i--) {
1746 short dataval = (read_cmd & (1 << i)) ? EE_DATA_WRITE : 0;
1747 writel(EE_ENB | dataval, ee_addr);
1748 readl(ee_addr);
1749 writel(EE_ENB | dataval | EE_SHIFT_CLK, ee_addr);
1750 readl(ee_addr);
1751 retval = (retval << 1) | ((readl(ee_addr) & EE_DATA_READ) ? 1 : 0);
1752 }
1753 writel(EE_ENB, ee_addr);
1754 readl(ee_addr);
1755
1756 for (i = 16; i > 0; i--) {
1757 writel(EE_ENB | EE_SHIFT_CLK, ee_addr);
1758 readl(ee_addr);
1759 retval = (retval << 1) | ((readl(ee_addr) & EE_DATA_READ) ? 1 : 0);
1760 writel(EE_ENB, ee_addr);
1761 readl(ee_addr);
1762 }
1763
1764 /* Terminate the EEPROM access. */
1765 writel(EE_ENB & ~EE_CS, ee_addr);
1766 return retval;
1767}
1768
1769static void __init de21041_get_srom_info (struct de_private *de)
1770{
1771 unsigned i, sa_offset = 0, ofs;
1772 u8 ee_data[DE_EEPROM_SIZE + 6] = {};
1773 unsigned ee_addr_size = tulip_read_eeprom(de->regs, 0xff, 8) & 0x40000 ? 8 : 6;
1774 struct de_srom_info_leaf *il;
1775 void *bufp;
1776
1777 /* download entire eeprom */
1778 for (i = 0; i < DE_EEPROM_WORDS; i++)
1779 ((u16 *)ee_data)[i] =
1780 le16_to_cpu(tulip_read_eeprom(de->regs, i, ee_addr_size));
1781
1782 /* DEC now has a specification but early board makers
1783 just put the address in the first EEPROM locations. */
1784 /* This does memcmp(eedata, eedata+16, 8) */
bc053d45
RB		 1785
1786#ifndef CONFIG_MIPS_COBALT
1787
1da177e4
LT		 1788 for (i = 0; i < 8; i ++)
1789 if (ee_data[i] != ee_data[16+i])
1790 sa_offset = 20;
1791
bc053d45
RB		 1792#endif
1793
1da177e4
LT		 1794 /* store MAC address */
1795 for (i = 0; i < 6; i ++)
1796 de->dev->dev_addr[i] = ee_data[i + sa_offset];
1797
1798 /* get offset of controller 0 info leaf. ignore 2nd byte. */
1799 ofs = ee_data[SROMC0InfoLeaf];
1800 if (ofs >= (sizeof(ee_data) - sizeof(struct de_srom_info_leaf) - sizeof(struct de_srom_media_block)))
1801 goto bad_srom;
1802
1803 /* get pointer to info leaf */
1804 il = (struct de_srom_info_leaf *) &ee_data[ofs];
1805
1806 /* paranoia checks */
1807 if (il->n_blocks == 0)
1808 goto bad_srom;
1809 if ((sizeof(ee_data) - ofs) <
1810 (sizeof(struct de_srom_info_leaf) + (sizeof(struct de_srom_media_block) * il->n_blocks)))
1811 goto bad_srom;
1812
1813 /* get default media type */
1814 switch (DE_UNALIGNED_16(&il->default_media)) {
1815 case 0x0001: de->media_type = DE_MEDIA_BNC; break;
1816 case 0x0002: de->media_type = DE_MEDIA_AUI; break;
1817 case 0x0204: de->media_type = DE_MEDIA_TP_FD; break;
1818 default: de->media_type = DE_MEDIA_TP_AUTO; break;
1819 }
1820
1821 if (netif_msg_probe(de))
1822 printk(KERN_INFO "de%d: SROM leaf offset %u, default media %s\n",
1823 de->board_idx, ofs,
1824 media_name[de->media_type]);
1825
1826 /* init SIA register values to defaults */
1827 for (i = 0; i < DE_MAX_MEDIA; i++) {
1828 de->media[i].type = DE_MEDIA_INVALID;
1829 de->media[i].csr13 = 0xffff;
1830 de->media[i].csr14 = 0xffff;
1831 de->media[i].csr15 = 0xffff;
1832 }
1833
1834 /* parse media blocks to see what medias are supported,
1835 * and if any custom CSR values are provided
1836 */
1837 bufp = ((void *)il) + sizeof(*il);
1838 for (i = 0; i < il->n_blocks; i++) {
1839 struct de_srom_media_block *ib = bufp;
1840 unsigned idx;
1841
1842 /* index based on media type in media block */
1843 switch(ib->opts & MediaBlockMask) {
1844 case 0: /* 10baseT */
1845 de->media_supported |= SUPPORTED_TP | SUPPORTED_10baseT_Half
1846 | SUPPORTED_Autoneg;
1847 idx = DE_MEDIA_TP;
1848 de->media[DE_MEDIA_TP_AUTO].type = DE_MEDIA_TP_AUTO;
1849 break;
1850 case 1: /* BNC */
1851 de->media_supported |= SUPPORTED_BNC;
1852 idx = DE_MEDIA_BNC;
1853 break;
1854 case 2: /* AUI */
1855 de->media_supported |= SUPPORTED_AUI;
1856 idx = DE_MEDIA_AUI;
1857 break;
1858 case 4: /* 10baseT-FD */
1859 de->media_supported |= SUPPORTED_TP | SUPPORTED_10baseT_Full
1860 | SUPPORTED_Autoneg;
1861 idx = DE_MEDIA_TP_FD;
1862 de->media[DE_MEDIA_TP_AUTO].type = DE_MEDIA_TP_AUTO;
1863 break;
1864 default:
1865 goto bad_srom;
1866 }
1867
1868 de->media[idx].type = idx;
1869
1870 if (netif_msg_probe(de))
1871 printk(KERN_INFO "de%d: media block #%u: %s",
1872 de->board_idx, i,
1873 media_name[de->media[idx].type]);
1874
1875 bufp += sizeof (ib->opts);
1876
1877 if (ib->opts & MediaCustomCSRs) {
1878 de->media[idx].csr13 = DE_UNALIGNED_16(&ib->csr13);
1879 de->media[idx].csr14 = DE_UNALIGNED_16(&ib->csr14);
1880 de->media[idx].csr15 = DE_UNALIGNED_16(&ib->csr15);
1881 bufp += sizeof(ib->csr13) + sizeof(ib->csr14) +
1882 sizeof(ib->csr15);
1883
1884 if (netif_msg_probe(de))
1885 printk(" (%x,%x,%x)\n",
1886 de->media[idx].csr13,
1887 de->media[idx].csr14,
1888 de->media[idx].csr15);
1889
1890 } else if (netif_msg_probe(de))
1891 printk("\n");
1892
1893 if (bufp > ((void *)&ee_data[DE_EEPROM_SIZE - 3]))
1894 break;
1895 }
1896
1897 de->media_advertise = de->media_supported;
1898
1899fill_defaults:
1900 /* fill in defaults, for cases where custom CSRs not used */
1901 for (i = 0; i < DE_MAX_MEDIA; i++) {
1902 if (de->media[i].csr13 == 0xffff)
1903 de->media[i].csr13 = t21041_csr13[i];
1904 if (de->media[i].csr14 == 0xffff)
1905 de->media[i].csr14 = t21041_csr14[i];
1906 if (de->media[i].csr15 == 0xffff)
1907 de->media[i].csr15 = t21041_csr15[i];
1908 }
1909
1910 de->ee_data = kmalloc(DE_EEPROM_SIZE, GFP_KERNEL);
1911 if (de->ee_data)
1912 memcpy(de->ee_data, &ee_data[0], DE_EEPROM_SIZE);
1913
1914 return;
1915
1916bad_srom:
1917 /* for error cases, it's ok to assume we support all these */
1918 for (i = 0; i < DE_MAX_MEDIA; i++)
1919 de->media[i].type = i;
1920 de->media_supported =
1921 SUPPORTED_10baseT_Half |
1922 SUPPORTED_10baseT_Full |
1923 SUPPORTED_Autoneg |
1924 SUPPORTED_TP |
1925 SUPPORTED_AUI |
1926 SUPPORTED_BNC;
1927 goto fill_defaults;
1928}
1929
1930static int __init de_init_one (struct pci_dev *pdev,
1931 const struct pci_device_id *ent)
1932{
1933 struct net_device *dev;
1934 struct de_private *de;
1935 int rc;
1936 void __iomem *regs;
afc7097f 1937 unsigned long pciaddr;
1da177e4
LT		 1938 static int board_idx = -1;
1939
1940 board_idx++;
1941
1942#ifndef MODULE
1943 if (board_idx == 0)
1944 printk("%s", version);
1945#endif
1946
1947 /* allocate a new ethernet device structure, and fill in defaults */
1948 dev = alloc_etherdev(sizeof(struct de_private));
1949 if (!dev)
1950 return -ENOMEM;
1951
1952 SET_MODULE_OWNER(dev);
1953 SET_NETDEV_DEV(dev, &pdev->dev);
1954 dev->open = de_open;
1955 dev->stop = de_close;
1956 dev->set_multicast_list = de_set_rx_mode;
1957 dev->hard_start_xmit = de_start_xmit;
1958 dev->get_stats = de_get_stats;
1959 dev->ethtool_ops = &de_ethtool_ops;
1960 dev->tx_timeout = de_tx_timeout;
1961 dev->watchdog_timeo = TX_TIMEOUT;
1962
1963 de = dev->priv;
1964 de->de21040 = ent->driver_data == 0 ? 1 : 0;
1965 de->pdev = pdev;
1966 de->dev = dev;
1967 de->msg_enable = (debug < 0 ? DE_DEF_MSG_ENABLE : debug);
1968 de->board_idx = board_idx;
1969 spin_lock_init (&de->lock);
1970 init_timer(&de->media_timer);
1971 if (de->de21040)
1972 de->media_timer.function = de21040_media_timer;
1973 else
1974 de->media_timer.function = de21041_media_timer;
1975 de->media_timer.data = (unsigned long) de;
1976
1977 netif_carrier_off(dev);
1978 netif_stop_queue(dev);
1979
1980 /* wake up device, assign resources */
1981 rc = pci_enable_device(pdev);
1982 if (rc)
1983 goto err_out_free;
1984
1985 /* reserve PCI resources to ensure driver atomicity */
1986 rc = pci_request_regions(pdev, DRV_NAME);
1987 if (rc)
1988 goto err_out_disable;
1989
1990 /* check for invalid IRQ value */
1991 if (pdev->irq < 2) {
1992 rc = -EIO;
1993 printk(KERN_ERR PFX "invalid irq (%d) for pci dev %s\n",
1994 pdev->irq, pci_name(pdev));
1995 goto err_out_res;
1996 }
1997
1998 dev->irq = pdev->irq;
1999
2000 /* obtain and check validity of PCI I/O address */
2001 pciaddr = pci_resource_start(pdev, 1);
2002 if (!pciaddr) {
2003 rc = -EIO;
2004 printk(KERN_ERR PFX "no MMIO resource for pci dev %s\n",
2005 pci_name(pdev));
2006 goto err_out_res;
2007 }
2008 if (pci_resource_len(pdev, 1) < DE_REGS_SIZE) {
2009 rc = -EIO;
2010 printk(KERN_ERR PFX "MMIO resource (%lx) too small on pci dev %s\n",
2011 pci_resource_len(pdev, 1), pci_name(pdev));
2012 goto err_out_res;
2013 }
2014
2015 /* remap CSR registers */
2016 regs = ioremap_nocache(pciaddr, DE_REGS_SIZE);
2017 if (!regs) {
2018 rc = -EIO;
2019 printk(KERN_ERR PFX "Cannot map PCI MMIO (%lx@%lx) on pci dev %s\n",
2020 pci_resource_len(pdev, 1), pciaddr, pci_name(pdev));
2021 goto err_out_res;
2022 }
2023 dev->base_addr = (unsigned long) regs;
2024 de->regs = regs;
2025
2026 de_adapter_wake(de);
2027
2028 /* make sure hardware is not running */
2029 rc = de_reset_mac(de);
2030 if (rc) {
2031 printk(KERN_ERR PFX "Cannot reset MAC, pci dev %s\n",
2032 pci_name(pdev));
2033 goto err_out_iomap;
2034 }
2035
2036 /* get MAC address, initialize default media type and
2037 * get list of supported media
2038 */
2039 if (de->de21040) {
2040 de21040_get_mac_address(de);
2041 de21040_get_media_info(de);
2042 } else {
2043 de21041_get_srom_info(de);
2044 }
2045
2046 /* register new network interface with kernel */
2047 rc = register_netdev(dev);
2048 if (rc)
2049 goto err_out_iomap;
2050
2051 /* print info about board and interface just registered */
2052 printk (KERN_INFO "%s: %s at 0x%lx, "
2053 "%02x:%02x:%02x:%02x:%02x:%02x, "
2054 "IRQ %d\n",
2055 dev->name,
2056 de->de21040 ? "21040" : "21041",
2057 dev->base_addr,
2058 dev->dev_addr[0], dev->dev_addr[1],
2059 dev->dev_addr[2], dev->dev_addr[3],
2060 dev->dev_addr[4], dev->dev_addr[5],
2061 dev->irq);
2062
2063 pci_set_drvdata(pdev, dev);
2064
2065 /* enable busmastering */
2066 pci_set_master(pdev);
2067
2068 /* put adapter to sleep */
2069 de_adapter_sleep(de);
2070
2071 return 0;
2072
2073err_out_iomap:
b4558ea9 2074 kfree(de->ee_data);
1da177e4
LT		 2075 iounmap(regs);
2076err_out_res:
2077 pci_release_regions(pdev);
2078err_out_disable:
2079 pci_disable_device(pdev);
2080err_out_free:
2081 free_netdev(dev);
2082 return rc;
2083}
2084
2085static void __exit de_remove_one (struct pci_dev *pdev)
2086{
2087 struct net_device *dev = pci_get_drvdata(pdev);
2088 struct de_private *de = dev->priv;
2089
7e0b58f3 2090 BUG_ON(!dev);
1da177e4 2091 unregister_netdev(dev);
b4558ea9 2092 kfree(de->ee_data);
1da177e4
LT		 2093 iounmap(de->regs);
2094 pci_release_regions(pdev);
2095 pci_disable_device(pdev);
2096 pci_set_drvdata(pdev, NULL);
2097 free_netdev(dev);
2098}
2099
2100#ifdef CONFIG_PM
2101
05adc3b7 2102static int de_suspend (struct pci_dev *pdev, pm_message_t state)
1da177e4
LT		 2103{
2104 struct net_device *dev = pci_get_drvdata (pdev);
2105 struct de_private *de = dev->priv;
2106
2107 rtnl_lock();
2108 if (netif_running (dev)) {
2109 del_timer_sync(&de->media_timer);
2110
2111 disable_irq(dev->irq);
2112 spin_lock_irq(&de->lock);
2113
2114 de_stop_hw(de);
2115 netif_stop_queue(dev);
2116 netif_device_detach(dev);
2117 netif_carrier_off(dev);
2118
2119 spin_unlock_irq(&de->lock);
2120 enable_irq(dev->irq);
2121
2122 /* Update the error counts. */
2123 __de_get_stats(de);
2124
2125 synchronize_irq(dev->irq);
2126 de_clean_rings(de);
2127
2128 de_adapter_sleep(de);
2129 pci_disable_device(pdev);
2130 } else {
2131 netif_device_detach(dev);
2132 }
2133 rtnl_unlock();
2134 return 0;
2135}
2136
2137static int de_resume (struct pci_dev *pdev)
2138{
2139 struct net_device *dev = pci_get_drvdata (pdev);
2140 struct de_private *de = dev->priv;
2141
2142 rtnl_lock();
2143 if (netif_device_present(dev))
2144 goto out;
2145 if (netif_running(dev)) {
2146 pci_enable_device(pdev);
2147 de_init_hw(de);
2148 netif_device_attach(dev);
2149 } else {
2150 netif_device_attach(dev);
2151 }
2152out:
2153 rtnl_unlock();
2154 return 0;
2155}
2156
2157#endif /* CONFIG_PM */
2158
2159static struct pci_driver de_driver = {
2160 .name = DRV_NAME,
2161 .id_table = de_pci_tbl,
2162 .probe = de_init_one,
2163 .remove = __exit_p(de_remove_one),
2164#ifdef CONFIG_PM
2165 .suspend = de_suspend,
2166 .resume = de_resume,
2167#endif
2168};
2169
2170static int __init de_init (void)
2171{
2172#ifdef MODULE
2173 printk("%s", version);
2174#endif
2175 return pci_module_init (&de_driver);
2176}
2177
2178static void __exit de_exit (void)
2179{
2180 pci_unregister_driver (&de_driver);
2181}
2182
2183module_init(de_init);
2184module_exit(de_exit);
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