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1/*
2 * Lance ethernet driver for the MIPS processor based
3 * DECstation family
4 *
5 *
6 * adopted from sunlance.c by Richard van den Berg
7 *
8 * Copyright (C) 2002, 2003, 2005, 2006 Maciej W. Rozycki
9 *
10 * additional sources:
11 * - PMAD-AA TURBOchannel Ethernet Module Functional Specification,
12 * Revision 1.2
13 *
14 * History:
15 *
16 * v0.001: The kernel accepts the code and it shows the hardware address.
17 *
18 * v0.002: Removed most sparc stuff, left only some module and dma stuff.
19 *
20 * v0.003: Enhanced base address calculation from proposals by
21 * Harald Koerfgen and Thomas Riemer.
22 *
23 * v0.004: lance-regs is pointing at the right addresses, added prom
24 * check. First start of address mapping and DMA.
25 *
26 * v0.005: started to play around with LANCE-DMA. This driver will not
27 * work for non IOASIC lances. HK
28 *
29 * v0.006: added pointer arrays to lance_private and setup routine for
30 * them in dec_lance_init. HK
31 *
32 * v0.007: Big shit. The LANCE seems to use a different DMA mechanism to
33 * access the init block. This looks like one (short) word at a
34 * time, but the smallest amount the IOASIC can transfer is a
35 * (long) word. So we have a 2-2 padding here. Changed
36 * lance_init_block accordingly. The 16-16 padding for the buffers
37 * seems to be correct. HK
38 *
39 * v0.008: mods to make PMAX_LANCE work. 01/09/1999 triemer
40 *
41 * v0.009: Module support fixes, multiple interfaces support, various
42 * bits. macro
43 *
44 * v0.010: Fixes for the PMAD mapping of the LANCE buffer and for the
45 * PMAX requirement to only use halfword accesses to the
46 * buffer. macro
47 *
48 * v0.011: Converted the PMAD to the driver model. macro
49 */
50
51#include <linux/crc32.h>
52#include <linux/delay.h>
53#include <linux/errno.h>
54#include <linux/if_ether.h>
55#include <linux/init.h>
56#include <linux/kernel.h>
57#include <linux/module.h>
58#include <linux/netdevice.h>
59#include <linux/etherdevice.h>
60#include <linux/spinlock.h>
61#include <linux/stddef.h>
62#include <linux/string.h>
63#include <linux/tc.h>
64#include <linux/types.h>
65
66#include <asm/addrspace.h>
67
68#include <asm/dec/interrupts.h>
69#include <asm/dec/ioasic.h>
70#include <asm/dec/ioasic_addrs.h>
71#include <asm/dec/kn01.h>
72#include <asm/dec/machtype.h>
73#include <asm/dec/system.h>
74
75static char version[] __devinitdata =
76"declance.c: v0.011 by Linux MIPS DECstation task force\n";
77
78MODULE_AUTHOR("Linux MIPS DECstation task force");
79MODULE_DESCRIPTION("DEC LANCE (DECstation onboard, PMAD-xx) driver");
80MODULE_LICENSE("GPL");
81
82#define __unused __attribute__ ((unused))
83
84/*
85 * card types
86 */
87#define ASIC_LANCE 1
88#define PMAD_LANCE 2
89#define PMAX_LANCE 3
90
91
92#define LE_CSR0 0
93#define LE_CSR1 1
94#define LE_CSR2 2
95#define LE_CSR3 3
96
97#define LE_MO_PROM 0x8000 /* Enable promiscuous mode */
98
99#define LE_C0_ERR 0x8000 /* Error: set if BAB, SQE, MISS or ME is set */
100#define LE_C0_BABL 0x4000 /* BAB: Babble: tx timeout. */
101#define LE_C0_CERR 0x2000 /* SQE: Signal quality error */
102#define LE_C0_MISS 0x1000 /* MISS: Missed a packet */
103#define LE_C0_MERR 0x0800 /* ME: Memory error */
104#define LE_C0_RINT 0x0400 /* Received interrupt */
105#define LE_C0_TINT 0x0200 /* Transmitter Interrupt */
106#define LE_C0_IDON 0x0100 /* IFIN: Init finished. */
107#define LE_C0_INTR 0x0080 /* Interrupt or error */
108#define LE_C0_INEA 0x0040 /* Interrupt enable */
109#define LE_C0_RXON 0x0020 /* Receiver on */
110#define LE_C0_TXON 0x0010 /* Transmitter on */
111#define LE_C0_TDMD 0x0008 /* Transmitter demand */
112#define LE_C0_STOP 0x0004 /* Stop the card */
113#define LE_C0_STRT 0x0002 /* Start the card */
114#define LE_C0_INIT 0x0001 /* Init the card */
115
116#define LE_C3_BSWP 0x4 /* SWAP */
117#define LE_C3_ACON 0x2 /* ALE Control */
118#define LE_C3_BCON 0x1 /* Byte control */
119
120/* Receive message descriptor 1 */
121#define LE_R1_OWN 0x8000 /* Who owns the entry */
122#define LE_R1_ERR 0x4000 /* Error: if FRA, OFL, CRC or BUF is set */
123#define LE_R1_FRA 0x2000 /* FRA: Frame error */
124#define LE_R1_OFL 0x1000 /* OFL: Frame overflow */
125#define LE_R1_CRC 0x0800 /* CRC error */
126#define LE_R1_BUF 0x0400 /* BUF: Buffer error */
127#define LE_R1_SOP 0x0200 /* Start of packet */
128#define LE_R1_EOP 0x0100 /* End of packet */
129#define LE_R1_POK 0x0300 /* Packet is complete: SOP + EOP */
130
131/* Transmit message descriptor 1 */
132#define LE_T1_OWN 0x8000 /* Lance owns the packet */
133#define LE_T1_ERR 0x4000 /* Error summary */
134#define LE_T1_EMORE 0x1000 /* Error: more than one retry needed */
135#define LE_T1_EONE 0x0800 /* Error: one retry needed */
136#define LE_T1_EDEF 0x0400 /* Error: deferred */
137#define LE_T1_SOP 0x0200 /* Start of packet */
138#define LE_T1_EOP 0x0100 /* End of packet */
139#define LE_T1_POK 0x0300 /* Packet is complete: SOP + EOP */
140
141#define LE_T3_BUF 0x8000 /* Buffer error */
142#define LE_T3_UFL 0x4000 /* Error underflow */
143#define LE_T3_LCOL 0x1000 /* Error late collision */
144#define LE_T3_CLOS 0x0800 /* Error carrier loss */
145#define LE_T3_RTY 0x0400 /* Error retry */
146#define LE_T3_TDR 0x03ff /* Time Domain Reflectometry counter */
147
148/* Define: 2^4 Tx buffers and 2^4 Rx buffers */
149
150#ifndef LANCE_LOG_TX_BUFFERS
151#define LANCE_LOG_TX_BUFFERS 4
152#define LANCE_LOG_RX_BUFFERS 4
153#endif
154
155#define TX_RING_SIZE (1 << (LANCE_LOG_TX_BUFFERS))
156#define TX_RING_MOD_MASK (TX_RING_SIZE - 1)
157
158#define RX_RING_SIZE (1 << (LANCE_LOG_RX_BUFFERS))
159#define RX_RING_MOD_MASK (RX_RING_SIZE - 1)
160
161#define PKT_BUF_SZ 1536
162#define RX_BUFF_SIZE PKT_BUF_SZ
163#define TX_BUFF_SIZE PKT_BUF_SZ
164
165#undef TEST_HITS
166#define ZERO 0
167
168/*
169 * The DS2100/3100 have a linear 64 kB buffer which supports halfword
170 * accesses only. Each halfword of the buffer is word-aligned in the
171 * CPU address space.
172 *
173 * The PMAD-AA has a 128 kB buffer on-board.
174 *
175 * The IOASIC LANCE devices use a shared memory region. This region
176 * as seen from the CPU is (max) 128 kB long and has to be on an 128 kB
177 * boundary. The LANCE sees this as a 64 kB long continuous memory
178 * region.
179 *
180 * The LANCE's DMA address is used as an index in this buffer and DMA
181 * takes place in bursts of eight 16-bit words which are packed into
182 * four 32-bit words by the IOASIC. This leads to a strange padding:
183 * 16 bytes of valid data followed by a 16 byte gap :-(.
184 */
185
186struct lance_rx_desc {
187 unsigned short rmd0; /* low address of packet */
188 unsigned short rmd1; /* high address of packet
189 and descriptor bits */
190 short length; /* 2s complement (negative!)
191 of buffer length */
192 unsigned short mblength; /* actual number of bytes received */
193};
194
195struct lance_tx_desc {
196 unsigned short tmd0; /* low address of packet */
197 unsigned short tmd1; /* high address of packet
198 and descriptor bits */
199 short length; /* 2s complement (negative!)
200 of buffer length */
201 unsigned short misc;
202};
203
204
205/* First part of the LANCE initialization block, described in databook. */
206struct lance_init_block {
207 unsigned short mode; /* pre-set mode (reg. 15) */
208
209 unsigned short phys_addr[3]; /* physical ethernet address */
210 unsigned short filter[4]; /* multicast filter */
211
212 /* Receive and transmit ring base, along with extra bits. */
213 unsigned short rx_ptr; /* receive descriptor addr */
214 unsigned short rx_len; /* receive len and high addr */
215 unsigned short tx_ptr; /* transmit descriptor addr */
216 unsigned short tx_len; /* transmit len and high addr */
217
218 short gap[4];
219
220 /* The buffer descriptors */
221 struct lance_rx_desc brx_ring[RX_RING_SIZE];
222 struct lance_tx_desc btx_ring[TX_RING_SIZE];
223};
224
225#define BUF_OFFSET_CPU sizeof(struct lance_init_block)
226#define BUF_OFFSET_LNC sizeof(struct lance_init_block)
227
228#define shift_off(off, type) \
229 (type == ASIC_LANCE || type == PMAX_LANCE ? off << 1 : off)
230
231#define lib_off(rt, type) \
232 shift_off(offsetof(struct lance_init_block, rt), type)
233
234#define lib_ptr(ib, rt, type) \
235 ((volatile u16 *)((u8 *)(ib) + lib_off(rt, type)))
236
237#define rds_off(rt, type) \
238 shift_off(offsetof(struct lance_rx_desc, rt), type)
239
240#define rds_ptr(rd, rt, type) \
241 ((volatile u16 *)((u8 *)(rd) + rds_off(rt, type)))
242
243#define tds_off(rt, type) \
244 shift_off(offsetof(struct lance_tx_desc, rt), type)
245
246#define tds_ptr(td, rt, type) \
247 ((volatile u16 *)((u8 *)(td) + tds_off(rt, type)))
248
249struct lance_private {
250 struct net_device *next;
251 int type;
252 int dma_irq;
253 volatile struct lance_regs *ll;
254
255 spinlock_t lock;
256
257 int rx_new, tx_new;
258 int rx_old, tx_old;
259
260 unsigned short busmaster_regval;
261
262 struct timer_list multicast_timer;
263
264 /* Pointers to the ring buffers as seen from the CPU */
265 char *rx_buf_ptr_cpu[RX_RING_SIZE];
266 char *tx_buf_ptr_cpu[TX_RING_SIZE];
267
268 /* Pointers to the ring buffers as seen from the LANCE */
269 uint rx_buf_ptr_lnc[RX_RING_SIZE];
270 uint tx_buf_ptr_lnc[TX_RING_SIZE];
271};
272
273#define TX_BUFFS_AVAIL ((lp->tx_old<=lp->tx_new)?\
274 lp->tx_old+TX_RING_MOD_MASK-lp->tx_new:\
275 lp->tx_old - lp->tx_new-1)
276
277/* The lance control ports are at an absolute address, machine and tc-slot
278 * dependent.
279 * DECstations do only 32-bit access and the LANCE uses 16 bit addresses,
280 * so we have to give the structure an extra member making rap pointing
281 * at the right address
282 */
283struct lance_regs {
284 volatile unsigned short rdp; /* register data port */
285 unsigned short pad;
286 volatile unsigned short rap; /* register address port */
287};
288
289int dec_lance_debug = 2;
290
291static struct tc_driver dec_lance_tc_driver;
292static struct net_device *root_lance_dev;
293
294static inline void writereg(volatile unsigned short *regptr, short value)
295{
296 *regptr = value;
297 iob();
298}
299
300/* Load the CSR registers */
301static void load_csrs(struct lance_private *lp)
302{
303 volatile struct lance_regs *ll = lp->ll;
304 uint leptr;
305
306 /* The address space as seen from the LANCE
307 * begins at address 0. HK
308 */
309 leptr = 0;
310
311 writereg(&ll->rap, LE_CSR1);
312 writereg(&ll->rdp, (leptr & 0xFFFF));
313 writereg(&ll->rap, LE_CSR2);
314 writereg(&ll->rdp, leptr >> 16);
315 writereg(&ll->rap, LE_CSR3);
316 writereg(&ll->rdp, lp->busmaster_regval);
317
318 /* Point back to csr0 */
319 writereg(&ll->rap, LE_CSR0);
320}
321
322/*
323 * Our specialized copy routines
324 *
325 */
326static void cp_to_buf(const int type, void *to, const void *from, int len)
327{
328 unsigned short *tp;
329 const unsigned short *fp;
330 unsigned short clen;
331 unsigned char *rtp;
332 const unsigned char *rfp;
333
334 if (type == PMAD_LANCE) {
335 memcpy(to, from, len);
336 } else if (type == PMAX_LANCE) {
337 clen = len >> 1;
338 tp = to;
339 fp = from;
340
341 while (clen--) {
342 *tp++ = *fp++;
343 tp++;
344 }
345
346 clen = len & 1;
347 rtp = tp;
348 rfp = fp;
349 while (clen--) {
350 *rtp++ = *rfp++;
351 }
352 } else {
353 /*
354 * copy 16 Byte chunks
355 */
356 clen = len >> 4;
357 tp = to;
358 fp = from;
359 while (clen--) {
360 *tp++ = *fp++;
361 *tp++ = *fp++;
362 *tp++ = *fp++;
363 *tp++ = *fp++;
364 *tp++ = *fp++;
365 *tp++ = *fp++;
366 *tp++ = *fp++;
367 *tp++ = *fp++;
368 tp += 8;
369 }
370
371 /*
372 * do the rest, if any.
373 */
374 clen = len & 15;
375 rtp = (unsigned char *) tp;
376 rfp = (unsigned char *) fp;
377 while (clen--) {
378 *rtp++ = *rfp++;
379 }
380 }
381
382 iob();
383}
384
385static void cp_from_buf(const int type, void *to, const void *from, int len)
386{
387 unsigned short *tp;
388 const unsigned short *fp;
389 unsigned short clen;
390 unsigned char *rtp;
391 const unsigned char *rfp;
392
393 if (type == PMAD_LANCE) {
394 memcpy(to, from, len);
395 } else if (type == PMAX_LANCE) {
396 clen = len >> 1;
397 tp = to;
398 fp = from;
399 while (clen--) {
400 *tp++ = *fp++;
401 fp++;
402 }
403
404 clen = len & 1;
405
406 rtp = tp;
407 rfp = fp;
408
409 while (clen--) {
410 *rtp++ = *rfp++;
411 }
412 } else {
413
414 /*
415 * copy 16 Byte chunks
416 */
417 clen = len >> 4;
418 tp = to;
419 fp = from;
420 while (clen--) {
421 *tp++ = *fp++;
422 *tp++ = *fp++;
423 *tp++ = *fp++;
424 *tp++ = *fp++;
425 *tp++ = *fp++;
426 *tp++ = *fp++;
427 *tp++ = *fp++;
428 *tp++ = *fp++;
429 fp += 8;
430 }
431
432 /*
433 * do the rest, if any.
434 */
435 clen = len & 15;
436 rtp = (unsigned char *) tp;
437 rfp = (unsigned char *) fp;
438 while (clen--) {
439 *rtp++ = *rfp++;
440 }
441
442
443 }
444
445}
446
447/* Setup the Lance Rx and Tx rings */
448static void lance_init_ring(struct net_device *dev)
449{
450 struct lance_private *lp = netdev_priv(dev);
451 volatile u16 *ib = (volatile u16 *)dev->mem_start;
452 uint leptr;
453 int i;
454
455 /* Lock out other processes while setting up hardware */
456 netif_stop_queue(dev);
457 lp->rx_new = lp->tx_new = 0;
458 lp->rx_old = lp->tx_old = 0;
459
460 /* Copy the ethernet address to the lance init block.
461 * XXX bit 0 of the physical address registers has to be zero
462 */
463 *lib_ptr(ib, phys_addr[0], lp->type) = (dev->dev_addr[1] << 8) |
464 dev->dev_addr[0];
465 *lib_ptr(ib, phys_addr[1], lp->type) = (dev->dev_addr[3] << 8) |
466 dev->dev_addr[2];
467 *lib_ptr(ib, phys_addr[2], lp->type) = (dev->dev_addr[5] << 8) |
468 dev->dev_addr[4];
469 /* Setup the initialization block */
470
471 /* Setup rx descriptor pointer */
472 leptr = offsetof(struct lance_init_block, brx_ring);
473 *lib_ptr(ib, rx_len, lp->type) = (LANCE_LOG_RX_BUFFERS << 13) |
474 (leptr >> 16);
475 *lib_ptr(ib, rx_ptr, lp->type) = leptr;
476 if (ZERO)
477 printk("RX ptr: %8.8x(%8.8x)\n",
478 leptr, lib_off(brx_ring, lp->type));
479
480 /* Setup tx descriptor pointer */
481 leptr = offsetof(struct lance_init_block, btx_ring);
482 *lib_ptr(ib, tx_len, lp->type) = (LANCE_LOG_TX_BUFFERS << 13) |
483 (leptr >> 16);
484 *lib_ptr(ib, tx_ptr, lp->type) = leptr;
485 if (ZERO)
486 printk("TX ptr: %8.8x(%8.8x)\n",
487 leptr, lib_off(btx_ring, lp->type));
488
489 if (ZERO)
490 printk("TX rings:\n");
491
492 /* Setup the Tx ring entries */
493 for (i = 0; i < TX_RING_SIZE; i++) {
494 leptr = lp->tx_buf_ptr_lnc[i];
495 *lib_ptr(ib, btx_ring[i].tmd0, lp->type) = leptr;
496 *lib_ptr(ib, btx_ring[i].tmd1, lp->type) = (leptr >> 16) &
497 0xff;
498 *lib_ptr(ib, btx_ring[i].length, lp->type) = 0xf000;
499 /* The ones required by tmd2 */
500 *lib_ptr(ib, btx_ring[i].misc, lp->type) = 0;
501 if (i < 3 && ZERO)
502 printk("%d: 0x%8.8x(0x%8.8x)\n",
503 i, leptr, (uint)lp->tx_buf_ptr_cpu[i]);
504 }
505
506 /* Setup the Rx ring entries */
507 if (ZERO)
508 printk("RX rings:\n");
509 for (i = 0; i < RX_RING_SIZE; i++) {
510 leptr = lp->rx_buf_ptr_lnc[i];
511 *lib_ptr(ib, brx_ring[i].rmd0, lp->type) = leptr;
512 *lib_ptr(ib, brx_ring[i].rmd1, lp->type) = ((leptr >> 16) &
513 0xff) |
514 LE_R1_OWN;
515 *lib_ptr(ib, brx_ring[i].length, lp->type) = -RX_BUFF_SIZE |
516 0xf000;
517 *lib_ptr(ib, brx_ring[i].mblength, lp->type) = 0;
518 if (i < 3 && ZERO)
519 printk("%d: 0x%8.8x(0x%8.8x)\n",
520 i, leptr, (uint)lp->rx_buf_ptr_cpu[i]);
521 }
522 iob();
523}
524
525static int init_restart_lance(struct lance_private *lp)
526{
527 volatile struct lance_regs *ll = lp->ll;
528 int i;
529
530 writereg(&ll->rap, LE_CSR0);
531 writereg(&ll->rdp, LE_C0_INIT);
532
533 /* Wait for the lance to complete initialization */
534 for (i = 0; (i < 100) && !(ll->rdp & LE_C0_IDON); i++) {
535 udelay(10);
536 }
537 if ((i == 100) || (ll->rdp & LE_C0_ERR)) {
538 printk("LANCE unopened after %d ticks, csr0=%4.4x.\n",
539 i, ll->rdp);
540 return -1;
541 }
542 if ((ll->rdp & LE_C0_ERR)) {
543 printk("LANCE unopened after %d ticks, csr0=%4.4x.\n",
544 i, ll->rdp);
545 return -1;
546 }
547 writereg(&ll->rdp, LE_C0_IDON);
548 writereg(&ll->rdp, LE_C0_STRT);
549 writereg(&ll->rdp, LE_C0_INEA);
550
551 return 0;
552}
553
554static int lance_rx(struct net_device *dev)
555{
556 struct lance_private *lp = netdev_priv(dev);
557 volatile u16 *ib = (volatile u16 *)dev->mem_start;
558 volatile u16 *rd;
559 unsigned short bits;
560 int entry, len;
561 struct sk_buff *skb;
562
563#ifdef TEST_HITS
564 {
565 int i;
566
567 printk("[");
568 for (i = 0; i < RX_RING_SIZE; i++) {
569 if (i == lp->rx_new)
570 printk("%s", *lib_ptr(ib, brx_ring[i].rmd1,
571 lp->type) &
572 LE_R1_OWN ? "_" : "X");
573 else
574 printk("%s", *lib_ptr(ib, brx_ring[i].rmd1,
575 lp->type) &
576 LE_R1_OWN ? "." : "1");
577 }
578 printk("]");
579 }
580#endif
581
582 for (rd = lib_ptr(ib, brx_ring[lp->rx_new], lp->type);
583 !((bits = *rds_ptr(rd, rmd1, lp->type)) & LE_R1_OWN);
584 rd = lib_ptr(ib, brx_ring[lp->rx_new], lp->type)) {
585 entry = lp->rx_new;
586
587 /* We got an incomplete frame? */
588 if ((bits & LE_R1_POK) != LE_R1_POK) {
589 dev->stats.rx_over_errors++;
590 dev->stats.rx_errors++;
591 } else if (bits & LE_R1_ERR) {
592 /* Count only the end frame as a rx error,
593 * not the beginning
594 */
595 if (bits & LE_R1_BUF)
596 dev->stats.rx_fifo_errors++;
597 if (bits & LE_R1_CRC)
598 dev->stats.rx_crc_errors++;
599 if (bits & LE_R1_OFL)
600 dev->stats.rx_over_errors++;
601 if (bits & LE_R1_FRA)
602 dev->stats.rx_frame_errors++;
603 if (bits & LE_R1_EOP)
604 dev->stats.rx_errors++;
605 } else {
606 len = (*rds_ptr(rd, mblength, lp->type) & 0xfff) - 4;
607 skb = netdev_alloc_skb(dev, len + 2);
608
609 if (skb == 0) {
610 printk("%s: Memory squeeze, deferring packet.\n",
611 dev->name);
612 dev->stats.rx_dropped++;
613 *rds_ptr(rd, mblength, lp->type) = 0;
614 *rds_ptr(rd, rmd1, lp->type) =
615 ((lp->rx_buf_ptr_lnc[entry] >> 16) &
616 0xff) | LE_R1_OWN;
617 lp->rx_new = (entry + 1) & RX_RING_MOD_MASK;
618 return 0;
619 }
620 dev->stats.rx_bytes += len;
621
622 skb_reserve(skb, 2); /* 16 byte align */
623 skb_put(skb, len); /* make room */
624
625 cp_from_buf(lp->type, skb->data,
626 (char *)lp->rx_buf_ptr_cpu[entry], len);
627
628 skb->protocol = eth_type_trans(skb, dev);
629 netif_rx(skb);
630 dev->stats.rx_packets++;
631 }
632
633 /* Return the packet to the pool */
634 *rds_ptr(rd, mblength, lp->type) = 0;
635 *rds_ptr(rd, length, lp->type) = -RX_BUFF_SIZE | 0xf000;
636 *rds_ptr(rd, rmd1, lp->type) =
637 ((lp->rx_buf_ptr_lnc[entry] >> 16) & 0xff) | LE_R1_OWN;
638 lp->rx_new = (entry + 1) & RX_RING_MOD_MASK;
639 }
640 return 0;
641}
642
643static void lance_tx(struct net_device *dev)
644{
645 struct lance_private *lp = netdev_priv(dev);
646 volatile u16 *ib = (volatile u16 *)dev->mem_start;
647 volatile struct lance_regs *ll = lp->ll;
648 volatile u16 *td;
649 int i, j;
650 int status;
651
652 j = lp->tx_old;
653
654 spin_lock(&lp->lock);
655
656 for (i = j; i != lp->tx_new; i = j) {
657 td = lib_ptr(ib, btx_ring[i], lp->type);
658 /* If we hit a packet not owned by us, stop */
659 if (*tds_ptr(td, tmd1, lp->type) & LE_T1_OWN)
660 break;
661
662 if (*tds_ptr(td, tmd1, lp->type) & LE_T1_ERR) {
663 status = *tds_ptr(td, misc, lp->type);
664
665 dev->stats.tx_errors++;
666 if (status & LE_T3_RTY)
667 dev->stats.tx_aborted_errors++;
668 if (status & LE_T3_LCOL)
669 dev->stats.tx_window_errors++;
670
671 if (status & LE_T3_CLOS) {
672 dev->stats.tx_carrier_errors++;
673 printk("%s: Carrier Lost\n", dev->name);
674 /* Stop the lance */
675 writereg(&ll->rap, LE_CSR0);
676 writereg(&ll->rdp, LE_C0_STOP);
677 lance_init_ring(dev);
678 load_csrs(lp);
679 init_restart_lance(lp);
680 goto out;
681 }
682 /* Buffer errors and underflows turn off the
683 * transmitter, restart the adapter.
684 */
685 if (status & (LE_T3_BUF | LE_T3_UFL)) {
686 dev->stats.tx_fifo_errors++;
687
688 printk("%s: Tx: ERR_BUF|ERR_UFL, restarting\n",
689 dev->name);
690 /* Stop the lance */
691 writereg(&ll->rap, LE_CSR0);
692 writereg(&ll->rdp, LE_C0_STOP);
693 lance_init_ring(dev);
694 load_csrs(lp);
695 init_restart_lance(lp);
696 goto out;
697 }
698 } else if ((*tds_ptr(td, tmd1, lp->type) & LE_T1_POK) ==
699 LE_T1_POK) {
700 /*
701 * So we don't count the packet more than once.
702 */
703 *tds_ptr(td, tmd1, lp->type) &= ~(LE_T1_POK);
704
705 /* One collision before packet was sent. */
706 if (*tds_ptr(td, tmd1, lp->type) & LE_T1_EONE)
707 dev->stats.collisions++;
708
709 /* More than one collision, be optimistic. */
710 if (*tds_ptr(td, tmd1, lp->type) & LE_T1_EMORE)
711 dev->stats.collisions += 2;
712
713 dev->stats.tx_packets++;
714 }
715 j = (j + 1) & TX_RING_MOD_MASK;
716 }
717 lp->tx_old = j;
718out:
719 if (netif_queue_stopped(dev) &&
720 TX_BUFFS_AVAIL > 0)
721 netif_wake_queue(dev);
722
723 spin_unlock(&lp->lock);
724}
725
726static irqreturn_t lance_dma_merr_int(int irq, void *dev_id)
727{
728 struct net_device *dev = dev_id;
729
730 printk(KERN_ERR "%s: DMA error\n", dev->name);
731 return IRQ_HANDLED;
732}
733
734static irqreturn_t lance_interrupt(int irq, void *dev_id)
735{
736 struct net_device *dev = dev_id;
737 struct lance_private *lp = netdev_priv(dev);
738 volatile struct lance_regs *ll = lp->ll;
739 int csr0;
740
741 writereg(&ll->rap, LE_CSR0);
742 csr0 = ll->rdp;
743
744 /* Acknowledge all the interrupt sources ASAP */
745 writereg(&ll->rdp, csr0 & (LE_C0_INTR | LE_C0_TINT | LE_C0_RINT));
746
747 if ((csr0 & LE_C0_ERR)) {
748 /* Clear the error condition */
749 writereg(&ll->rdp, LE_C0_BABL | LE_C0_ERR | LE_C0_MISS |
750 LE_C0_CERR | LE_C0_MERR);
751 }
752 if (csr0 & LE_C0_RINT)
753 lance_rx(dev);
754
755 if (csr0 & LE_C0_TINT)
756 lance_tx(dev);
757
758 if (csr0 & LE_C0_BABL)
759 dev->stats.tx_errors++;
760
761 if (csr0 & LE_C0_MISS)
762 dev->stats.rx_errors++;
763
764 if (csr0 & LE_C0_MERR) {
765 printk("%s: Memory error, status %04x\n", dev->name, csr0);
766
767 writereg(&ll->rdp, LE_C0_STOP);
768
769 lance_init_ring(dev);
770 load_csrs(lp);
771 init_restart_lance(lp);
772 netif_wake_queue(dev);
773 }
774
775 writereg(&ll->rdp, LE_C0_INEA);
776 writereg(&ll->rdp, LE_C0_INEA);
777 return IRQ_HANDLED;
778}
779
780static int lance_open(struct net_device *dev)
781{
782 volatile u16 *ib = (volatile u16 *)dev->mem_start;
783 struct lance_private *lp = netdev_priv(dev);
784 volatile struct lance_regs *ll = lp->ll;
785 int status = 0;
786
787 /* Stop the Lance */
788 writereg(&ll->rap, LE_CSR0);
789 writereg(&ll->rdp, LE_C0_STOP);
790
791 /* Set mode and clear multicast filter only at device open,
792 * so that lance_init_ring() called at any error will not
793 * forget multicast filters.
794 *
795 * BTW it is common bug in all lance drivers! --ANK
796 */
797 *lib_ptr(ib, mode, lp->type) = 0;
798 *lib_ptr(ib, filter[0], lp->type) = 0;
799 *lib_ptr(ib, filter[1], lp->type) = 0;
800 *lib_ptr(ib, filter[2], lp->type) = 0;
801 *lib_ptr(ib, filter[3], lp->type) = 0;
802
803 lance_init_ring(dev);
804 load_csrs(lp);
805
806 netif_start_queue(dev);
807
808 /* Associate IRQ with lance_interrupt */
809 if (request_irq(dev->irq, lance_interrupt, 0, "lance", dev)) {
810 printk("%s: Can't get IRQ %d\n", dev->name, dev->irq);
811 return -EAGAIN;
812 }
813 if (lp->dma_irq >= 0) {
814 unsigned long flags;
815
816 if (request_irq(lp->dma_irq, lance_dma_merr_int, 0,
817 "lance error", dev)) {
818 free_irq(dev->irq, dev);
819 printk("%s: Can't get DMA IRQ %d\n", dev->name,
820 lp->dma_irq);
821 return -EAGAIN;
822 }
823
824 spin_lock_irqsave(&ioasic_ssr_lock, flags);
825
826 fast_mb();
827 /* Enable I/O ASIC LANCE DMA. */
828 ioasic_write(IO_REG_SSR,
829 ioasic_read(IO_REG_SSR) | IO_SSR_LANCE_DMA_EN);
830
831 fast_mb();
832 spin_unlock_irqrestore(&ioasic_ssr_lock, flags);
833 }
834
835 status = init_restart_lance(lp);
836 return status;
837}
838
839static int lance_close(struct net_device *dev)
840{
841 struct lance_private *lp = netdev_priv(dev);
842 volatile struct lance_regs *ll = lp->ll;
843
844 netif_stop_queue(dev);
845 del_timer_sync(&lp->multicast_timer);
846
847 /* Stop the card */
848 writereg(&ll->rap, LE_CSR0);
849 writereg(&ll->rdp, LE_C0_STOP);
850
851 if (lp->dma_irq >= 0) {
852 unsigned long flags;
853
854 spin_lock_irqsave(&ioasic_ssr_lock, flags);
855
856 fast_mb();
857 /* Disable I/O ASIC LANCE DMA. */
858 ioasic_write(IO_REG_SSR,
859 ioasic_read(IO_REG_SSR) & ~IO_SSR_LANCE_DMA_EN);
860
861 fast_iob();
862 spin_unlock_irqrestore(&ioasic_ssr_lock, flags);
863
864 free_irq(lp->dma_irq, dev);
865 }
866 free_irq(dev->irq, dev);
867 return 0;
868}
869
870static inline int lance_reset(struct net_device *dev)
871{
872 struct lance_private *lp = netdev_priv(dev);
873 volatile struct lance_regs *ll = lp->ll;
874 int status;
875
876 /* Stop the lance */
877 writereg(&ll->rap, LE_CSR0);
878 writereg(&ll->rdp, LE_C0_STOP);
879
880 lance_init_ring(dev);
881 load_csrs(lp);
882 dev->trans_start = jiffies; /* prevent tx timeout */
883 status = init_restart_lance(lp);
884 return status;
885}
886
887static void lance_tx_timeout(struct net_device *dev)
888{
889 struct lance_private *lp = netdev_priv(dev);
890 volatile struct lance_regs *ll = lp->ll;
891
892 printk(KERN_ERR "%s: transmit timed out, status %04x, reset\n",
893 dev->name, ll->rdp);
894 lance_reset(dev);
895 netif_wake_queue(dev);
896}
897
898static int lance_start_xmit(struct sk_buff *skb, struct net_device *dev)
899{
900 struct lance_private *lp = netdev_priv(dev);
901 volatile struct lance_regs *ll = lp->ll;
902 volatile u16 *ib = (volatile u16 *)dev->mem_start;
903 unsigned long flags;
904 int entry, len;
905
906 len = skb->len;
907
908 if (len < ETH_ZLEN) {
909 if (skb_padto(skb, ETH_ZLEN))
910 return NETDEV_TX_OK;
911 len = ETH_ZLEN;
912 }
913
914 dev->stats.tx_bytes += len;
915
916 spin_lock_irqsave(&lp->lock, flags);
917
918 entry = lp->tx_new;
919 *lib_ptr(ib, btx_ring[entry].length, lp->type) = (-len);
920 *lib_ptr(ib, btx_ring[entry].misc, lp->type) = 0;
921
922 cp_to_buf(lp->type, (char *)lp->tx_buf_ptr_cpu[entry], skb->data, len);
923
924 /* Now, give the packet to the lance */
925 *lib_ptr(ib, btx_ring[entry].tmd1, lp->type) =
926 ((lp->tx_buf_ptr_lnc[entry] >> 16) & 0xff) |
927 (LE_T1_POK | LE_T1_OWN);
928 lp->tx_new = (entry + 1) & TX_RING_MOD_MASK;
929
930 if (TX_BUFFS_AVAIL <= 0)
931 netif_stop_queue(dev);
932
933 /* Kick the lance: transmit now */
934 writereg(&ll->rdp, LE_C0_INEA | LE_C0_TDMD);
935
936 spin_unlock_irqrestore(&lp->lock, flags);
937
938 dev_kfree_skb(skb);
939
940 return NETDEV_TX_OK;
941}
942
943static void lance_load_multicast(struct net_device *dev)
944{
945 struct lance_private *lp = netdev_priv(dev);
946 volatile u16 *ib = (volatile u16 *)dev->mem_start;
947 struct netdev_hw_addr *ha;
948 u32 crc;
949
950 /* set all multicast bits */
951 if (dev->flags & IFF_ALLMULTI) {
952 *lib_ptr(ib, filter[0], lp->type) = 0xffff;
953 *lib_ptr(ib, filter[1], lp->type) = 0xffff;
954 *lib_ptr(ib, filter[2], lp->type) = 0xffff;
955 *lib_ptr(ib, filter[3], lp->type) = 0xffff;
956 return;
957 }
958 /* clear the multicast filter */
959 *lib_ptr(ib, filter[0], lp->type) = 0;
960 *lib_ptr(ib, filter[1], lp->type) = 0;
961 *lib_ptr(ib, filter[2], lp->type) = 0;
962 *lib_ptr(ib, filter[3], lp->type) = 0;
963
964 /* Add addresses */
965 netdev_for_each_mc_addr(ha, dev) {
966 crc = ether_crc_le(ETH_ALEN, ha->addr);
967 crc = crc >> 26;
968 *lib_ptr(ib, filter[crc >> 4], lp->type) |= 1 << (crc & 0xf);
969 }
970}
971
972static void lance_set_multicast(struct net_device *dev)
973{
974 struct lance_private *lp = netdev_priv(dev);
975 volatile u16 *ib = (volatile u16 *)dev->mem_start;
976 volatile struct lance_regs *ll = lp->ll;
977
978 if (!netif_running(dev))
979 return;
980
981 if (lp->tx_old != lp->tx_new) {
982 mod_timer(&lp->multicast_timer, jiffies + 4 * HZ/100);
983 netif_wake_queue(dev);
984 return;
985 }
986
987 netif_stop_queue(dev);
988
989 writereg(&ll->rap, LE_CSR0);
990 writereg(&ll->rdp, LE_C0_STOP);
991
992 lance_init_ring(dev);
993
994 if (dev->flags & IFF_PROMISC) {
995 *lib_ptr(ib, mode, lp->type) |= LE_MO_PROM;
996 } else {
997 *lib_ptr(ib, mode, lp->type) &= ~LE_MO_PROM;
998 lance_load_multicast(dev);
999 }
1000 load_csrs(lp);
1001 init_restart_lance(lp);
1002 netif_wake_queue(dev);
1003}
1004
1005static void lance_set_multicast_retry(unsigned long _opaque)
1006{
1007 struct net_device *dev = (struct net_device *) _opaque;
1008
1009 lance_set_multicast(dev);
1010}
1011
1012static const struct net_device_ops lance_netdev_ops = {
1013 .ndo_open = lance_open,
1014 .ndo_stop = lance_close,
1015 .ndo_start_xmit = lance_start_xmit,
1016 .ndo_tx_timeout = lance_tx_timeout,
1017 .ndo_set_rx_mode = lance_set_multicast,
1018 .ndo_change_mtu = eth_change_mtu,
1019 .ndo_validate_addr = eth_validate_addr,
1020 .ndo_set_mac_address = eth_mac_addr,
1021};
1022
1023static int __devinit dec_lance_probe(struct device *bdev, const int type)
1024{
1025 static unsigned version_printed;
1026 static const char fmt[] = "declance%d";
1027 char name[10];
1028 struct net_device *dev;
1029 struct lance_private *lp;
1030 volatile struct lance_regs *ll;
1031 resource_size_t start = 0, len = 0;
1032 int i, ret;
1033 unsigned long esar_base;
1034 unsigned char *esar;
1035
1036 if (dec_lance_debug && version_printed++ == 0)
1037 printk(version);
1038
1039 if (bdev)
1040 snprintf(name, sizeof(name), "%s", dev_name(bdev));
1041 else {
1042 i = 0;
1043 dev = root_lance_dev;
1044 while (dev) {
1045 i++;
1046 lp = netdev_priv(dev);
1047 dev = lp->next;
1048 }
1049 snprintf(name, sizeof(name), fmt, i);
1050 }
1051
1052 dev = alloc_etherdev(sizeof(struct lance_private));
1053 if (!dev) {
1054 ret = -ENOMEM;
1055 goto err_out;
1056 }
1057
1058 /*
1059 * alloc_etherdev ensures the data structures used by the LANCE
1060 * are aligned.
1061 */
1062 lp = netdev_priv(dev);
1063 spin_lock_init(&lp->lock);
1064
1065 lp->type = type;
1066 switch (type) {
1067 case ASIC_LANCE:
1068 dev->base_addr = CKSEG1ADDR(dec_kn_slot_base + IOASIC_LANCE);
1069
1070 /* buffer space for the on-board LANCE shared memory */
1071 /*
1072 * FIXME: ugly hack!
1073 */
1074 dev->mem_start = CKSEG1ADDR(0x00020000);
1075 dev->mem_end = dev->mem_start + 0x00020000;
1076 dev->irq = dec_interrupt[DEC_IRQ_LANCE];
1077 esar_base = CKSEG1ADDR(dec_kn_slot_base + IOASIC_ESAR);
1078
1079 /* Workaround crash with booting KN04 2.1k from Disk */
1080 memset((void *)dev->mem_start, 0,
1081 dev->mem_end - dev->mem_start);
1082
1083 /*
1084 * setup the pointer arrays, this sucks [tm] :-(
1085 */
1086 for (i = 0; i < RX_RING_SIZE; i++) {
1087 lp->rx_buf_ptr_cpu[i] =
1088 (char *)(dev->mem_start + 2 * BUF_OFFSET_CPU +
1089 2 * i * RX_BUFF_SIZE);
1090 lp->rx_buf_ptr_lnc[i] =
1091 (BUF_OFFSET_LNC + i * RX_BUFF_SIZE);
1092 }
1093 for (i = 0; i < TX_RING_SIZE; i++) {
1094 lp->tx_buf_ptr_cpu[i] =
1095 (char *)(dev->mem_start + 2 * BUF_OFFSET_CPU +
1096 2 * RX_RING_SIZE * RX_BUFF_SIZE +
1097 2 * i * TX_BUFF_SIZE);
1098 lp->tx_buf_ptr_lnc[i] =
1099 (BUF_OFFSET_LNC +
1100 RX_RING_SIZE * RX_BUFF_SIZE +
1101 i * TX_BUFF_SIZE);
1102 }
1103
1104 /* Setup I/O ASIC LANCE DMA. */
1105 lp->dma_irq = dec_interrupt[DEC_IRQ_LANCE_MERR];
1106 ioasic_write(IO_REG_LANCE_DMA_P,
1107 CPHYSADDR(dev->mem_start) << 3);
1108
1109 break;
1110#ifdef CONFIG_TC
1111 case PMAD_LANCE:
1112 dev_set_drvdata(bdev, dev);
1113
1114 start = to_tc_dev(bdev)->resource.start;
1115 len = to_tc_dev(bdev)->resource.end - start + 1;
1116 if (!request_mem_region(start, len, dev_name(bdev))) {
1117 printk(KERN_ERR
1118 "%s: Unable to reserve MMIO resource\n",
1119 dev_name(bdev));
1120 ret = -EBUSY;
1121 goto err_out_dev;
1122 }
1123
1124 dev->mem_start = CKSEG1ADDR(start);
1125 dev->mem_end = dev->mem_start + 0x100000;
1126 dev->base_addr = dev->mem_start + 0x100000;
1127 dev->irq = to_tc_dev(bdev)->interrupt;
1128 esar_base = dev->mem_start + 0x1c0002;
1129 lp->dma_irq = -1;
1130
1131 for (i = 0; i < RX_RING_SIZE; i++) {
1132 lp->rx_buf_ptr_cpu[i] =
1133 (char *)(dev->mem_start + BUF_OFFSET_CPU +
1134 i * RX_BUFF_SIZE);
1135 lp->rx_buf_ptr_lnc[i] =
1136 (BUF_OFFSET_LNC + i * RX_BUFF_SIZE);
1137 }
1138 for (i = 0; i < TX_RING_SIZE; i++) {
1139 lp->tx_buf_ptr_cpu[i] =
1140 (char *)(dev->mem_start + BUF_OFFSET_CPU +
1141 RX_RING_SIZE * RX_BUFF_SIZE +
1142 i * TX_BUFF_SIZE);
1143 lp->tx_buf_ptr_lnc[i] =
1144 (BUF_OFFSET_LNC +
1145 RX_RING_SIZE * RX_BUFF_SIZE +
1146 i * TX_BUFF_SIZE);
1147 }
1148
1149 break;
1150#endif
1151 case PMAX_LANCE:
1152 dev->irq = dec_interrupt[DEC_IRQ_LANCE];
1153 dev->base_addr = CKSEG1ADDR(KN01_SLOT_BASE + KN01_LANCE);
1154 dev->mem_start = CKSEG1ADDR(KN01_SLOT_BASE + KN01_LANCE_MEM);
1155 dev->mem_end = dev->mem_start + KN01_SLOT_SIZE;
1156 esar_base = CKSEG1ADDR(KN01_SLOT_BASE + KN01_ESAR + 1);
1157 lp->dma_irq = -1;
1158
1159 /*
1160 * setup the pointer arrays, this sucks [tm] :-(
1161 */
1162 for (i = 0; i < RX_RING_SIZE; i++) {
1163 lp->rx_buf_ptr_cpu[i] =
1164 (char *)(dev->mem_start + 2 * BUF_OFFSET_CPU +
1165 2 * i * RX_BUFF_SIZE);
1166 lp->rx_buf_ptr_lnc[i] =
1167 (BUF_OFFSET_LNC + i * RX_BUFF_SIZE);
1168 }
1169 for (i = 0; i < TX_RING_SIZE; i++) {
1170 lp->tx_buf_ptr_cpu[i] =
1171 (char *)(dev->mem_start + 2 * BUF_OFFSET_CPU +
1172 2 * RX_RING_SIZE * RX_BUFF_SIZE +
1173 2 * i * TX_BUFF_SIZE);
1174 lp->tx_buf_ptr_lnc[i] =
1175 (BUF_OFFSET_LNC +
1176 RX_RING_SIZE * RX_BUFF_SIZE +
1177 i * TX_BUFF_SIZE);
1178 }
1179
1180 break;
1181
1182 default:
1183 printk(KERN_ERR "%s: declance_init called with unknown type\n",
1184 name);
1185 ret = -ENODEV;
1186 goto err_out_dev;
1187 }
1188
1189 ll = (struct lance_regs *) dev->base_addr;
1190 esar = (unsigned char *) esar_base;
1191
1192 /* prom checks */
1193 /* First, check for test pattern */
1194 if (esar[0x60] != 0xff && esar[0x64] != 0x00 &&
1195 esar[0x68] != 0x55 && esar[0x6c] != 0xaa) {
1196 printk(KERN_ERR
1197 "%s: Ethernet station address prom not found!\n",
1198 name);
1199 ret = -ENODEV;
1200 goto err_out_resource;
1201 }
1202 /* Check the prom contents */
1203 for (i = 0; i < 8; i++) {
1204 if (esar[i * 4] != esar[0x3c - i * 4] &&
1205 esar[i * 4] != esar[0x40 + i * 4] &&
1206 esar[0x3c - i * 4] != esar[0x40 + i * 4]) {
1207 printk(KERN_ERR "%s: Something is wrong with the "
1208 "ethernet station address prom!\n", name);
1209 ret = -ENODEV;
1210 goto err_out_resource;
1211 }
1212 }
1213
1214 /* Copy the ethernet address to the device structure, later to the
1215 * lance initialization block so the lance gets it every time it's
1216 * (re)initialized.
1217 */
1218 switch (type) {
1219 case ASIC_LANCE:
1220 printk("%s: IOASIC onboard LANCE", name);
1221 break;
1222 case PMAD_LANCE:
1223 printk("%s: PMAD-AA", name);
1224 break;
1225 case PMAX_LANCE:
1226 printk("%s: PMAX onboard LANCE", name);
1227 break;
1228 }
1229 for (i = 0; i < 6; i++)
1230 dev->dev_addr[i] = esar[i * 4];
1231
1232 printk(", addr = %pM, irq = %d\n", dev->dev_addr, dev->irq);
1233
1234 dev->netdev_ops = &lance_netdev_ops;
1235 dev->watchdog_timeo = 5*HZ;
1236
1237 /* lp->ll is the location of the registers for lance card */
1238 lp->ll = ll;
1239
1240 /* busmaster_regval (CSR3) should be zero according to the PMAD-AA
1241 * specification.
1242 */
1243 lp->busmaster_regval = 0;
1244
1245 dev->dma = 0;
1246
1247 /* We cannot sleep if the chip is busy during a
1248 * multicast list update event, because such events
1249 * can occur from interrupts (ex. IPv6). So we
1250 * use a timer to try again later when necessary. -DaveM
1251 */
1252 init_timer(&lp->multicast_timer);
1253 lp->multicast_timer.data = (unsigned long) dev;
1254 lp->multicast_timer.function = lance_set_multicast_retry;
1255
1256 ret = register_netdev(dev);
1257 if (ret) {
1258 printk(KERN_ERR
1259 "%s: Unable to register netdev, aborting.\n", name);
1260 goto err_out_resource;
1261 }
1262
1263 if (!bdev) {
1264 lp->next = root_lance_dev;
1265 root_lance_dev = dev;
1266 }
1267
1268 printk("%s: registered as %s.\n", name, dev->name);
1269 return 0;
1270
1271err_out_resource:
1272 if (bdev)
1273 release_mem_region(start, len);
1274
1275err_out_dev:
1276 free_netdev(dev);
1277
1278err_out:
1279 return ret;
1280}
1281
1282static void __exit dec_lance_remove(struct device *bdev)
1283{
1284 struct net_device *dev = dev_get_drvdata(bdev);
1285 resource_size_t start, len;
1286
1287 unregister_netdev(dev);
1288 start = to_tc_dev(bdev)->resource.start;
1289 len = to_tc_dev(bdev)->resource.end - start + 1;
1290 release_mem_region(start, len);
1291 free_netdev(dev);
1292}
1293
1294/* Find all the lance cards on the system and initialize them */
1295static int __init dec_lance_platform_probe(void)
1296{
1297 int count = 0;
1298
1299 if (dec_interrupt[DEC_IRQ_LANCE] >= 0) {
1300 if (dec_interrupt[DEC_IRQ_LANCE_MERR] >= 0) {
1301 if (dec_lance_probe(NULL, ASIC_LANCE) >= 0)
1302 count++;
1303 } else if (!TURBOCHANNEL) {
1304 if (dec_lance_probe(NULL, PMAX_LANCE) >= 0)
1305 count++;
1306 }
1307 }
1308
1309 return (count > 0) ? 0 : -ENODEV;
1310}
1311
1312static void __exit dec_lance_platform_remove(void)
1313{
1314 while (root_lance_dev) {
1315 struct net_device *dev = root_lance_dev;
1316 struct lance_private *lp = netdev_priv(dev);
1317
1318 unregister_netdev(dev);
1319 root_lance_dev = lp->next;
1320 free_netdev(dev);
1321 }
1322}
1323
1324#ifdef CONFIG_TC
1325static int __devinit dec_lance_tc_probe(struct device *dev);
1326static int __exit dec_lance_tc_remove(struct device *dev);
1327
1328static const struct tc_device_id dec_lance_tc_table[] = {
1329 { "DEC ", "PMAD-AA " },
1330 { }
1331};
1332MODULE_DEVICE_TABLE(tc, dec_lance_tc_table);
1333
1334static struct tc_driver dec_lance_tc_driver = {
1335 .id_table = dec_lance_tc_table,
1336 .driver = {
1337 .name = "declance",
1338 .bus = &tc_bus_type,
1339 .probe = dec_lance_tc_probe,
1340 .remove = __exit_p(dec_lance_tc_remove),
1341 },
1342};
1343
1344static int __devinit dec_lance_tc_probe(struct device *dev)
1345{
1346 int status = dec_lance_probe(dev, PMAD_LANCE);
1347 if (!status)
1348 get_device(dev);
1349 return status;
1350}
1351
1352static int __exit dec_lance_tc_remove(struct device *dev)
1353{
1354 put_device(dev);
1355 dec_lance_remove(dev);
1356 return 0;
1357}
1358#endif
1359
1360static int __init dec_lance_init(void)
1361{
1362 int status;
1363
1364 status = tc_register_driver(&dec_lance_tc_driver);
1365 if (!status)
1366 dec_lance_platform_probe();
1367 return status;
1368}
1369
1370static void __exit dec_lance_exit(void)
1371{
1372 dec_lance_platform_remove();
1373 tc_unregister_driver(&dec_lance_tc_driver);
1374}
1375
1376
1377module_init(dec_lance_init);
1378module_exit(dec_lance_exit);