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pvrusb2: reduce stack usage pvr2_eeprom_analyze()
[linux/fpc-iii.git] / drivers / net / ethernet / amd / pcnet32.c
blobc22bf52d3320b4831f944ceef01770264acc3c6b
1 /* pcnet32.c: An AMD PCnet32 ethernet driver for linux. */
2 /*
3 * Copyright 1996-1999 Thomas Bogendoerfer
4 *
5 * Derived from the lance driver written 1993,1994,1995 by Donald Becker.
6 *
7 * Copyright 1993 United States Government as represented by the
8 * Director, National Security Agency.
9 *
10 * This software may be used and distributed according to the terms
11 * of the GNU General Public License, incorporated herein by reference.
12 *
13 * This driver is for PCnet32 and PCnetPCI based ethercards
14 */
15 /**************************************************************************
16 * 23 Oct, 2000.
17 * Fixed a few bugs, related to running the controller in 32bit mode.
18 *
19 * Carsten Langgaard, carstenl@mips.com
20 * Copyright (C) 2000 MIPS Technologies, Inc. All rights reserved.
21 *
22 *************************************************************************/
23
24 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
25
26 #define DRV_NAME "pcnet32"
27 #define DRV_VERSION "1.35"
28 #define DRV_RELDATE "21.Apr.2008"
29 #define PFX DRV_NAME ": "
30
31 static const char *const version =
32 DRV_NAME ".c:v" DRV_VERSION " " DRV_RELDATE " tsbogend@alpha.franken.de\n";
33
34 #include <linux/module.h>
35 #include <linux/kernel.h>
36 #include <linux/sched.h>
37 #include <linux/string.h>
38 #include <linux/errno.h>
39 #include <linux/ioport.h>
40 #include <linux/slab.h>
41 #include <linux/interrupt.h>
42 #include <linux/pci.h>
43 #include <linux/delay.h>
44 #include <linux/init.h>
45 #include <linux/ethtool.h>
46 #include <linux/mii.h>
47 #include <linux/crc32.h>
48 #include <linux/netdevice.h>
49 #include <linux/etherdevice.h>
50 #include <linux/if_ether.h>
51 #include <linux/skbuff.h>
52 #include <linux/spinlock.h>
53 #include <linux/moduleparam.h>
54 #include <linux/bitops.h>
55 #include <linux/io.h>
56 #include <linux/uaccess.h>
57
58 #include <asm/dma.h>
59 #include <asm/irq.h>
60
61 /*
62 * PCI device identifiers for "new style" Linux PCI Device Drivers
63 */
64 static const struct pci_device_id pcnet32_pci_tbl[] = {
65 { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_LANCE_HOME), },
66 { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_LANCE), },
67
68 /*
69 * Adapters that were sold with IBM's RS/6000 or pSeries hardware have
70 * the incorrect vendor id.
71 */
72 { PCI_DEVICE(PCI_VENDOR_ID_TRIDENT, PCI_DEVICE_ID_AMD_LANCE),
73 .class = (PCI_CLASS_NETWORK_ETHERNET << 8), .class_mask = 0xffff00, },
74
75 { } /* terminate list */
76 };
77
78 MODULE_DEVICE_TABLE(pci, pcnet32_pci_tbl);
79
80 static int cards_found;
81
82 /*
83 * VLB I/O addresses
84 */
85 static unsigned int pcnet32_portlist[] =
86 { 0x300, 0x320, 0x340, 0x360, 0 };
87
88 static int pcnet32_debug;
89 static int tx_start = 1; /* Mapping -- 0:20, 1:64, 2:128, 3:~220 (depends on chip vers) */
90 static int pcnet32vlb; /* check for VLB cards ? */
91
92 static struct net_device *pcnet32_dev;
93
94 static int max_interrupt_work = 2;
95 static int rx_copybreak = 200;
96
97 #define PCNET32_PORT_AUI 0x00
98 #define PCNET32_PORT_10BT 0x01
99 #define PCNET32_PORT_GPSI 0x02
100 #define PCNET32_PORT_MII 0x03
101
102 #define PCNET32_PORT_PORTSEL 0x03
103 #define PCNET32_PORT_ASEL 0x04
104 #define PCNET32_PORT_100 0x40
105 #define PCNET32_PORT_FD 0x80
106
107 #define PCNET32_DMA_MASK 0xffffffff
108
109 #define PCNET32_WATCHDOG_TIMEOUT (jiffies + (2 * HZ))
110 #define PCNET32_BLINK_TIMEOUT (jiffies + (HZ/4))
111
112 /*
113 * table to translate option values from tulip
114 * to internal options
115 */
116 static const unsigned char options_mapping[] = {
117 PCNET32_PORT_ASEL, /* 0 Auto-select */
118 PCNET32_PORT_AUI, /* 1 BNC/AUI */
119 PCNET32_PORT_AUI, /* 2 AUI/BNC */
120 PCNET32_PORT_ASEL, /* 3 not supported */
121 PCNET32_PORT_10BT | PCNET32_PORT_FD, /* 4 10baseT-FD */
122 PCNET32_PORT_ASEL, /* 5 not supported */
123 PCNET32_PORT_ASEL, /* 6 not supported */
124 PCNET32_PORT_ASEL, /* 7 not supported */
125 PCNET32_PORT_ASEL, /* 8 not supported */
126 PCNET32_PORT_MII, /* 9 MII 10baseT */
127 PCNET32_PORT_MII | PCNET32_PORT_FD, /* 10 MII 10baseT-FD */
128 PCNET32_PORT_MII, /* 11 MII (autosel) */
129 PCNET32_PORT_10BT, /* 12 10BaseT */
130 PCNET32_PORT_MII | PCNET32_PORT_100, /* 13 MII 100BaseTx */
131 /* 14 MII 100BaseTx-FD */
132 PCNET32_PORT_MII | PCNET32_PORT_100 | PCNET32_PORT_FD,
133 PCNET32_PORT_ASEL /* 15 not supported */
134 };
135
136 static const char pcnet32_gstrings_test[][ETH_GSTRING_LEN] = {
137 "Loopback test (offline)"
138 };
139
140 #define PCNET32_TEST_LEN ARRAY_SIZE(pcnet32_gstrings_test)
141
142 #define PCNET32_NUM_REGS 136
143
144 #define MAX_UNITS 8 /* More are supported, limit only on options */
145 static int options[MAX_UNITS];
146 static int full_duplex[MAX_UNITS];
147 static int homepna[MAX_UNITS];
148
149 /*
150 * Theory of Operation
151 *
152 * This driver uses the same software structure as the normal lance
153 * driver. So look for a verbose description in lance.c. The differences
154 * to the normal lance driver is the use of the 32bit mode of PCnet32
155 * and PCnetPCI chips. Because these chips are 32bit chips, there is no
156 * 16MB limitation and we don't need bounce buffers.
157 */
158
159 /*
160 * Set the number of Tx and Rx buffers, using Log_2(# buffers).
161 * Reasonable default values are 4 Tx buffers, and 16 Rx buffers.
162 * That translates to 2 (4 == 2^^2) and 4 (16 == 2^^4).
163 */
164 #ifndef PCNET32_LOG_TX_BUFFERS
165 #define PCNET32_LOG_TX_BUFFERS 4
166 #define PCNET32_LOG_RX_BUFFERS 5
167 #define PCNET32_LOG_MAX_TX_BUFFERS 9 /* 2^9 == 512 */
168 #define PCNET32_LOG_MAX_RX_BUFFERS 9
169 #endif
170
171 #define TX_RING_SIZE (1 << (PCNET32_LOG_TX_BUFFERS))
172 #define TX_MAX_RING_SIZE (1 << (PCNET32_LOG_MAX_TX_BUFFERS))
173
174 #define RX_RING_SIZE (1 << (PCNET32_LOG_RX_BUFFERS))
175 #define RX_MAX_RING_SIZE (1 << (PCNET32_LOG_MAX_RX_BUFFERS))
176
177 #define PKT_BUF_SKB 1544
178 /* actual buffer length after being aligned */
179 #define PKT_BUF_SIZE (PKT_BUF_SKB - NET_IP_ALIGN)
180 /* chip wants twos complement of the (aligned) buffer length */
181 #define NEG_BUF_SIZE (NET_IP_ALIGN - PKT_BUF_SKB)
182
183 /* Offsets from base I/O address. */
184 #define PCNET32_WIO_RDP 0x10
185 #define PCNET32_WIO_RAP 0x12
186 #define PCNET32_WIO_RESET 0x14
187 #define PCNET32_WIO_BDP 0x16
188
189 #define PCNET32_DWIO_RDP 0x10
190 #define PCNET32_DWIO_RAP 0x14
191 #define PCNET32_DWIO_RESET 0x18
192 #define PCNET32_DWIO_BDP 0x1C
193
194 #define PCNET32_TOTAL_SIZE 0x20
195
196 #define CSR0 0
197 #define CSR0_INIT 0x1
198 #define CSR0_START 0x2
199 #define CSR0_STOP 0x4
200 #define CSR0_TXPOLL 0x8
201 #define CSR0_INTEN 0x40
202 #define CSR0_IDON 0x0100
203 #define CSR0_NORMAL (CSR0_START | CSR0_INTEN)
204 #define PCNET32_INIT_LOW 1
205 #define PCNET32_INIT_HIGH 2
206 #define CSR3 3
207 #define CSR4 4
208 #define CSR5 5
209 #define CSR5_SUSPEND 0x0001
210 #define CSR15 15
211 #define PCNET32_MC_FILTER 8
212
213 #define PCNET32_79C970A 0x2621
214
215 /* The PCNET32 Rx and Tx ring descriptors. */
216 struct pcnet32_rx_head {
217 __le32 base;
218 __le16 buf_length; /* two`s complement of length */
219 __le16 status;
220 __le32 msg_length;
221 __le32 reserved;
222 };
223
224 struct pcnet32_tx_head {
225 __le32 base;
226 __le16 length; /* two`s complement of length */
227 __le16 status;
228 __le32 misc;
229 __le32 reserved;
230 };
231
232 /* The PCNET32 32-Bit initialization block, described in databook. */
233 struct pcnet32_init_block {
234 __le16 mode;
235 __le16 tlen_rlen;
236 u8 phys_addr[6];
237 __le16 reserved;
238 __le32 filter[2];
239 /* Receive and transmit ring base, along with extra bits. */
240 __le32 rx_ring;
241 __le32 tx_ring;
242 };
243
244 /* PCnet32 access functions */
245 struct pcnet32_access {
246 u16 (*read_csr) (unsigned long, int);
247 void (*write_csr) (unsigned long, int, u16);
248 u16 (*read_bcr) (unsigned long, int);
249 void (*write_bcr) (unsigned long, int, u16);
250 u16 (*read_rap) (unsigned long);
251 void (*write_rap) (unsigned long, u16);
252 void (*reset) (unsigned long);
253 };
254
255 /*
256 * The first field of pcnet32_private is read by the ethernet device
257 * so the structure should be allocated using pci_alloc_consistent().
258 */
259 struct pcnet32_private {
260 struct pcnet32_init_block *init_block;
261 /* The Tx and Rx ring entries must be aligned on 16-byte boundaries in 32bit mode. */
262 struct pcnet32_rx_head *rx_ring;
263 struct pcnet32_tx_head *tx_ring;
264 dma_addr_t init_dma_addr;/* DMA address of beginning of the init block,
265 returned by pci_alloc_consistent */
266 struct pci_dev *pci_dev;
267 const char *name;
268 /* The saved address of a sent-in-place packet/buffer, for skfree(). */
269 struct sk_buff **tx_skbuff;
270 struct sk_buff **rx_skbuff;
271 dma_addr_t *tx_dma_addr;
272 dma_addr_t *rx_dma_addr;
273 const struct pcnet32_access *a;
274 spinlock_t lock; /* Guard lock */
275 unsigned int cur_rx, cur_tx; /* The next free ring entry */
276 unsigned int rx_ring_size; /* current rx ring size */
277 unsigned int tx_ring_size; /* current tx ring size */
278 unsigned int rx_mod_mask; /* rx ring modular mask */
279 unsigned int tx_mod_mask; /* tx ring modular mask */
280 unsigned short rx_len_bits;
281 unsigned short tx_len_bits;
282 dma_addr_t rx_ring_dma_addr;
283 dma_addr_t tx_ring_dma_addr;
284 unsigned int dirty_rx, /* ring entries to be freed. */
285 dirty_tx;
286
287 struct net_device *dev;
288 struct napi_struct napi;
289 char tx_full;
290 char phycount; /* number of phys found */
291 int options;
292 unsigned int shared_irq:1, /* shared irq possible */
293 dxsuflo:1, /* disable transmit stop on uflo */
294 mii:1; /* mii port available */
295 struct net_device *next;
296 struct mii_if_info mii_if;
297 struct timer_list watchdog_timer;
298 u32 msg_enable; /* debug message level */
299
300 /* each bit indicates an available PHY */
301 u32 phymask;
302 unsigned short chip_version; /* which variant this is */
303
304 /* saved registers during ethtool blink */
305 u16 save_regs[4];
306 };
307
308 static int pcnet32_probe_pci(struct pci_dev *, const struct pci_device_id *);
309 static int pcnet32_probe1(unsigned long, int, struct pci_dev *);
310 static int pcnet32_open(struct net_device *);
311 static int pcnet32_init_ring(struct net_device *);
312 static netdev_tx_t pcnet32_start_xmit(struct sk_buff *,
313 struct net_device *);
314 static void pcnet32_tx_timeout(struct net_device *dev);
315 static irqreturn_t pcnet32_interrupt(int, void *);
316 static int pcnet32_close(struct net_device *);
317 static struct net_device_stats *pcnet32_get_stats(struct net_device *);
318 static void pcnet32_load_multicast(struct net_device *dev);
319 static void pcnet32_set_multicast_list(struct net_device *);
320 static int pcnet32_ioctl(struct net_device *, struct ifreq *, int);
321 static void pcnet32_watchdog(struct net_device *);
322 static int mdio_read(struct net_device *dev, int phy_id, int reg_num);
323 static void mdio_write(struct net_device *dev, int phy_id, int reg_num,
324 int val);
325 static void pcnet32_restart(struct net_device *dev, unsigned int csr0_bits);
326 static void pcnet32_ethtool_test(struct net_device *dev,
327 struct ethtool_test *eth_test, u64 * data);
328 static int pcnet32_loopback_test(struct net_device *dev, uint64_t * data1);
329 static int pcnet32_get_regs_len(struct net_device *dev);
330 static void pcnet32_get_regs(struct net_device *dev, struct ethtool_regs *regs,
331 void *ptr);
332 static void pcnet32_purge_tx_ring(struct net_device *dev);
333 static int pcnet32_alloc_ring(struct net_device *dev, const char *name);
334 static void pcnet32_free_ring(struct net_device *dev);
335 static void pcnet32_check_media(struct net_device *dev, int verbose);
336
337 static u16 pcnet32_wio_read_csr(unsigned long addr, int index)
338 {
339 outw(index, addr + PCNET32_WIO_RAP);
340 return inw(addr + PCNET32_WIO_RDP);
341 }
342
343 static void pcnet32_wio_write_csr(unsigned long addr, int index, u16 val)
344 {
345 outw(index, addr + PCNET32_WIO_RAP);
346 outw(val, addr + PCNET32_WIO_RDP);
347 }
348
349 static u16 pcnet32_wio_read_bcr(unsigned long addr, int index)
350 {
351 outw(index, addr + PCNET32_WIO_RAP);
352 return inw(addr + PCNET32_WIO_BDP);
353 }
354
355 static void pcnet32_wio_write_bcr(unsigned long addr, int index, u16 val)
356 {
357 outw(index, addr + PCNET32_WIO_RAP);
358 outw(val, addr + PCNET32_WIO_BDP);
359 }
360
361 static u16 pcnet32_wio_read_rap(unsigned long addr)
362 {
363 return inw(addr + PCNET32_WIO_RAP);
364 }
365
366 static void pcnet32_wio_write_rap(unsigned long addr, u16 val)
367 {
368 outw(val, addr + PCNET32_WIO_RAP);
369 }
370
371 static void pcnet32_wio_reset(unsigned long addr)
372 {
373 inw(addr + PCNET32_WIO_RESET);
374 }
375
376 static int pcnet32_wio_check(unsigned long addr)
377 {
378 outw(88, addr + PCNET32_WIO_RAP);
379 return inw(addr + PCNET32_WIO_RAP) == 88;
380 }
381
382 static const struct pcnet32_access pcnet32_wio = {
383 .read_csr = pcnet32_wio_read_csr,
384 .write_csr = pcnet32_wio_write_csr,
385 .read_bcr = pcnet32_wio_read_bcr,
386 .write_bcr = pcnet32_wio_write_bcr,
387 .read_rap = pcnet32_wio_read_rap,
388 .write_rap = pcnet32_wio_write_rap,
389 .reset = pcnet32_wio_reset
390 };
391
392 static u16 pcnet32_dwio_read_csr(unsigned long addr, int index)
393 {
394 outl(index, addr + PCNET32_DWIO_RAP);
395 return inl(addr + PCNET32_DWIO_RDP) & 0xffff;
396 }
397
398 static void pcnet32_dwio_write_csr(unsigned long addr, int index, u16 val)
399 {
400 outl(index, addr + PCNET32_DWIO_RAP);
401 outl(val, addr + PCNET32_DWIO_RDP);
402 }
403
404 static u16 pcnet32_dwio_read_bcr(unsigned long addr, int index)
405 {
406 outl(index, addr + PCNET32_DWIO_RAP);
407 return inl(addr + PCNET32_DWIO_BDP) & 0xffff;
408 }
409
410 static void pcnet32_dwio_write_bcr(unsigned long addr, int index, u16 val)
411 {
412 outl(index, addr + PCNET32_DWIO_RAP);
413 outl(val, addr + PCNET32_DWIO_BDP);
414 }
415
416 static u16 pcnet32_dwio_read_rap(unsigned long addr)
417 {
418 return inl(addr + PCNET32_DWIO_RAP) & 0xffff;
419 }
420
421 static void pcnet32_dwio_write_rap(unsigned long addr, u16 val)
422 {
423 outl(val, addr + PCNET32_DWIO_RAP);
424 }
425
426 static void pcnet32_dwio_reset(unsigned long addr)
427 {
428 inl(addr + PCNET32_DWIO_RESET);
429 }
430
431 static int pcnet32_dwio_check(unsigned long addr)
432 {
433 outl(88, addr + PCNET32_DWIO_RAP);
434 return (inl(addr + PCNET32_DWIO_RAP) & 0xffff) == 88;
435 }
436
437 static const struct pcnet32_access pcnet32_dwio = {
438 .read_csr = pcnet32_dwio_read_csr,
439 .write_csr = pcnet32_dwio_write_csr,
440 .read_bcr = pcnet32_dwio_read_bcr,
441 .write_bcr = pcnet32_dwio_write_bcr,
442 .read_rap = pcnet32_dwio_read_rap,
443 .write_rap = pcnet32_dwio_write_rap,
444 .reset = pcnet32_dwio_reset
445 };
446
447 static void pcnet32_netif_stop(struct net_device *dev)
448 {
449 struct pcnet32_private *lp = netdev_priv(dev);
450
451 netif_trans_update(dev); /* prevent tx timeout */
452 napi_disable(&lp->napi);
453 netif_tx_disable(dev);
454 }
455
456 static void pcnet32_netif_start(struct net_device *dev)
457 {
458 struct pcnet32_private *lp = netdev_priv(dev);
459 ulong ioaddr = dev->base_addr;
460 u16 val;
461
462 netif_wake_queue(dev);
463 val = lp->a->read_csr(ioaddr, CSR3);
464 val &= 0x00ff;
465 lp->a->write_csr(ioaddr, CSR3, val);
466 napi_enable(&lp->napi);
467 }
468
469 /*
470 * Allocate space for the new sized tx ring.
471 * Free old resources
472 * Save new resources.
473 * Any failure keeps old resources.
474 * Must be called with lp->lock held.
475 */
476 static void pcnet32_realloc_tx_ring(struct net_device *dev,
477 struct pcnet32_private *lp,
478 unsigned int size)
479 {
480 dma_addr_t new_ring_dma_addr;
481 dma_addr_t *new_dma_addr_list;
482 struct pcnet32_tx_head *new_tx_ring;
483 struct sk_buff **new_skb_list;
484 unsigned int entries = BIT(size);
485
486 pcnet32_purge_tx_ring(dev);
487
488 new_tx_ring =
489 pci_zalloc_consistent(lp->pci_dev,
490 sizeof(struct pcnet32_tx_head) * entries,
491 &new_ring_dma_addr);
492 if (new_tx_ring == NULL)
493 return;
494
495 new_dma_addr_list = kcalloc(entries, sizeof(dma_addr_t), GFP_ATOMIC);
496 if (!new_dma_addr_list)
497 goto free_new_tx_ring;
498
499 new_skb_list = kcalloc(entries, sizeof(struct sk_buff *), GFP_ATOMIC);
500 if (!new_skb_list)
501 goto free_new_lists;
502
503 kfree(lp->tx_skbuff);
504 kfree(lp->tx_dma_addr);
505 pci_free_consistent(lp->pci_dev,
506 sizeof(struct pcnet32_tx_head) * lp->tx_ring_size,
507 lp->tx_ring, lp->tx_ring_dma_addr);
508
509 lp->tx_ring_size = entries;
510 lp->tx_mod_mask = lp->tx_ring_size - 1;
511 lp->tx_len_bits = (size << 12);
512 lp->tx_ring = new_tx_ring;
513 lp->tx_ring_dma_addr = new_ring_dma_addr;
514 lp->tx_dma_addr = new_dma_addr_list;
515 lp->tx_skbuff = new_skb_list;
516 return;
517
518 free_new_lists:
519 kfree(new_dma_addr_list);
520 free_new_tx_ring:
521 pci_free_consistent(lp->pci_dev,
522 sizeof(struct pcnet32_tx_head) * entries,
523 new_tx_ring,
524 new_ring_dma_addr);
525 }
526
527 /*
528 * Allocate space for the new sized rx ring.
529 * Re-use old receive buffers.
530 * alloc extra buffers
531 * free unneeded buffers
532 * free unneeded buffers
533 * Save new resources.
534 * Any failure keeps old resources.
535 * Must be called with lp->lock held.
536 */
537 static void pcnet32_realloc_rx_ring(struct net_device *dev,
538 struct pcnet32_private *lp,
539 unsigned int size)
540 {
541 dma_addr_t new_ring_dma_addr;
542 dma_addr_t *new_dma_addr_list;
543 struct pcnet32_rx_head *new_rx_ring;
544 struct sk_buff **new_skb_list;
545 int new, overlap;
546 unsigned int entries = BIT(size);
547
548 new_rx_ring =
549 pci_zalloc_consistent(lp->pci_dev,
550 sizeof(struct pcnet32_rx_head) * entries,
551 &new_ring_dma_addr);
552 if (new_rx_ring == NULL)
553 return;
554
555 new_dma_addr_list = kcalloc(entries, sizeof(dma_addr_t), GFP_ATOMIC);
556 if (!new_dma_addr_list)
557 goto free_new_rx_ring;
558
559 new_skb_list = kcalloc(entries, sizeof(struct sk_buff *), GFP_ATOMIC);
560 if (!new_skb_list)
561 goto free_new_lists;
562
563 /* first copy the current receive buffers */
564 overlap = min(entries, lp->rx_ring_size);
565 for (new = 0; new < overlap; new++) {
566 new_rx_ring[new] = lp->rx_ring[new];
567 new_dma_addr_list[new] = lp->rx_dma_addr[new];
568 new_skb_list[new] = lp->rx_skbuff[new];
569 }
570 /* now allocate any new buffers needed */
571 for (; new < entries; new++) {
572 struct sk_buff *rx_skbuff;
573 new_skb_list[new] = netdev_alloc_skb(dev, PKT_BUF_SKB);
574 rx_skbuff = new_skb_list[new];
575 if (!rx_skbuff) {
576 /* keep the original lists and buffers */
577 netif_err(lp, drv, dev, "%s netdev_alloc_skb failed\n",
578 __func__);
579 goto free_all_new;
580 }
581 skb_reserve(rx_skbuff, NET_IP_ALIGN);
582
583 new_dma_addr_list[new] =
584 pci_map_single(lp->pci_dev, rx_skbuff->data,
585 PKT_BUF_SIZE, PCI_DMA_FROMDEVICE);
586 if (pci_dma_mapping_error(lp->pci_dev,
587 new_dma_addr_list[new])) {
588 netif_err(lp, drv, dev, "%s dma mapping failed\n",
589 __func__);
590 dev_kfree_skb(new_skb_list[new]);
591 goto free_all_new;
592 }
593 new_rx_ring[new].base = cpu_to_le32(new_dma_addr_list[new]);
594 new_rx_ring[new].buf_length = cpu_to_le16(NEG_BUF_SIZE);
595 new_rx_ring[new].status = cpu_to_le16(0x8000);
596 }
597 /* and free any unneeded buffers */
598 for (; new < lp->rx_ring_size; new++) {
599 if (lp->rx_skbuff[new]) {
600 if (!pci_dma_mapping_error(lp->pci_dev,
601 lp->rx_dma_addr[new]))
602 pci_unmap_single(lp->pci_dev,
603 lp->rx_dma_addr[new],
604 PKT_BUF_SIZE,
605 PCI_DMA_FROMDEVICE);
606 dev_kfree_skb(lp->rx_skbuff[new]);
607 }
608 }
609
610 kfree(lp->rx_skbuff);
611 kfree(lp->rx_dma_addr);
612 pci_free_consistent(lp->pci_dev,
613 sizeof(struct pcnet32_rx_head) *
614 lp->rx_ring_size, lp->rx_ring,
615 lp->rx_ring_dma_addr);
616
617 lp->rx_ring_size = entries;
618 lp->rx_mod_mask = lp->rx_ring_size - 1;
619 lp->rx_len_bits = (size << 4);
620 lp->rx_ring = new_rx_ring;
621 lp->rx_ring_dma_addr = new_ring_dma_addr;
622 lp->rx_dma_addr = new_dma_addr_list;
623 lp->rx_skbuff = new_skb_list;
624 return;
625
626 free_all_new:
627 while (--new >= lp->rx_ring_size) {
628 if (new_skb_list[new]) {
629 if (!pci_dma_mapping_error(lp->pci_dev,
630 new_dma_addr_list[new]))
631 pci_unmap_single(lp->pci_dev,
632 new_dma_addr_list[new],
633 PKT_BUF_SIZE,
634 PCI_DMA_FROMDEVICE);
635 dev_kfree_skb(new_skb_list[new]);
636 }
637 }
638 kfree(new_skb_list);
639 free_new_lists:
640 kfree(new_dma_addr_list);
641 free_new_rx_ring:
642 pci_free_consistent(lp->pci_dev,
643 sizeof(struct pcnet32_rx_head) * entries,
644 new_rx_ring,
645 new_ring_dma_addr);
646 }
647
648 static void pcnet32_purge_rx_ring(struct net_device *dev)
649 {
650 struct pcnet32_private *lp = netdev_priv(dev);
651 int i;
652
653 /* free all allocated skbuffs */
654 for (i = 0; i < lp->rx_ring_size; i++) {
655 lp->rx_ring[i].status = 0; /* CPU owns buffer */
656 wmb(); /* Make sure adapter sees owner change */
657 if (lp->rx_skbuff[i]) {
658 if (!pci_dma_mapping_error(lp->pci_dev,
659 lp->rx_dma_addr[i]))
660 pci_unmap_single(lp->pci_dev,
661 lp->rx_dma_addr[i],
662 PKT_BUF_SIZE,
663 PCI_DMA_FROMDEVICE);
664 dev_kfree_skb_any(lp->rx_skbuff[i]);
665 }
666 lp->rx_skbuff[i] = NULL;
667 lp->rx_dma_addr[i] = 0;
668 }
669 }
670
671 #ifdef CONFIG_NET_POLL_CONTROLLER
672 static void pcnet32_poll_controller(struct net_device *dev)
673 {
674 disable_irq(dev->irq);
675 pcnet32_interrupt(0, dev);
676 enable_irq(dev->irq);
677 }
678 #endif
679
680 static int pcnet32_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
681 {
682 struct pcnet32_private *lp = netdev_priv(dev);
683 unsigned long flags;
684 int r = -EOPNOTSUPP;
685
686 if (lp->mii) {
687 spin_lock_irqsave(&lp->lock, flags);
688 mii_ethtool_gset(&lp->mii_if, cmd);
689 spin_unlock_irqrestore(&lp->lock, flags);
690 r = 0;
691 }
692 return r;
693 }
694
695 static int pcnet32_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
696 {
697 struct pcnet32_private *lp = netdev_priv(dev);
698 unsigned long flags;
699 int r = -EOPNOTSUPP;
700
701 if (lp->mii) {
702 spin_lock_irqsave(&lp->lock, flags);
703 r = mii_ethtool_sset(&lp->mii_if, cmd);
704 spin_unlock_irqrestore(&lp->lock, flags);
705 }
706 return r;
707 }
708
709 static void pcnet32_get_drvinfo(struct net_device *dev,
710 struct ethtool_drvinfo *info)
711 {
712 struct pcnet32_private *lp = netdev_priv(dev);
713
714 strlcpy(info->driver, DRV_NAME, sizeof(info->driver));
715 strlcpy(info->version, DRV_VERSION, sizeof(info->version));
716 if (lp->pci_dev)
717 strlcpy(info->bus_info, pci_name(lp->pci_dev),
718 sizeof(info->bus_info));
719 else
720 snprintf(info->bus_info, sizeof(info->bus_info),
721 "VLB 0x%lx", dev->base_addr);
722 }
723
724 static u32 pcnet32_get_link(struct net_device *dev)
725 {
726 struct pcnet32_private *lp = netdev_priv(dev);
727 unsigned long flags;
728 int r;
729
730 spin_lock_irqsave(&lp->lock, flags);
731 if (lp->mii) {
732 r = mii_link_ok(&lp->mii_if);
733 } else if (lp->chip_version >= PCNET32_79C970A) {
734 ulong ioaddr = dev->base_addr; /* card base I/O address */
735 r = (lp->a->read_bcr(ioaddr, 4) != 0xc0);
736 } else { /* can not detect link on really old chips */
737 r = 1;
738 }
739 spin_unlock_irqrestore(&lp->lock, flags);
740
741 return r;
742 }
743
744 static u32 pcnet32_get_msglevel(struct net_device *dev)
745 {
746 struct pcnet32_private *lp = netdev_priv(dev);
747 return lp->msg_enable;
748 }
749
750 static void pcnet32_set_msglevel(struct net_device *dev, u32 value)
751 {
752 struct pcnet32_private *lp = netdev_priv(dev);
753 lp->msg_enable = value;
754 }
755
756 static int pcnet32_nway_reset(struct net_device *dev)
757 {
758 struct pcnet32_private *lp = netdev_priv(dev);
759 unsigned long flags;
760 int r = -EOPNOTSUPP;
761
762 if (lp->mii) {
763 spin_lock_irqsave(&lp->lock, flags);
764 r = mii_nway_restart(&lp->mii_if);
765 spin_unlock_irqrestore(&lp->lock, flags);
766 }
767 return r;
768 }
769
770 static void pcnet32_get_ringparam(struct net_device *dev,
771 struct ethtool_ringparam *ering)
772 {
773 struct pcnet32_private *lp = netdev_priv(dev);
774
775 ering->tx_max_pending = TX_MAX_RING_SIZE;
776 ering->tx_pending = lp->tx_ring_size;
777 ering->rx_max_pending = RX_MAX_RING_SIZE;
778 ering->rx_pending = lp->rx_ring_size;
779 }
780
781 static int pcnet32_set_ringparam(struct net_device *dev,
782 struct ethtool_ringparam *ering)
783 {
784 struct pcnet32_private *lp = netdev_priv(dev);
785 unsigned long flags;
786 unsigned int size;
787 ulong ioaddr = dev->base_addr;
788 int i;
789
790 if (ering->rx_mini_pending || ering->rx_jumbo_pending)
791 return -EINVAL;
792
793 if (netif_running(dev))
794 pcnet32_netif_stop(dev);
795
796 spin_lock_irqsave(&lp->lock, flags);
797 lp->a->write_csr(ioaddr, CSR0, CSR0_STOP); /* stop the chip */
798
799 size = min(ering->tx_pending, (unsigned int)TX_MAX_RING_SIZE);
800
801 /* set the minimum ring size to 4, to allow the loopback test to work
802 * unchanged.
803 */
804 for (i = 2; i <= PCNET32_LOG_MAX_TX_BUFFERS; i++) {
805 if (size <= (1 << i))
806 break;
807 }
808 if ((1 << i) != lp->tx_ring_size)
809 pcnet32_realloc_tx_ring(dev, lp, i);
810
811 size = min(ering->rx_pending, (unsigned int)RX_MAX_RING_SIZE);
812 for (i = 2; i <= PCNET32_LOG_MAX_RX_BUFFERS; i++) {
813 if (size <= (1 << i))
814 break;
815 }
816 if ((1 << i) != lp->rx_ring_size)
817 pcnet32_realloc_rx_ring(dev, lp, i);
818
819 lp->napi.weight = lp->rx_ring_size / 2;
820
821 if (netif_running(dev)) {
822 pcnet32_netif_start(dev);
823 pcnet32_restart(dev, CSR0_NORMAL);
824 }
825
826 spin_unlock_irqrestore(&lp->lock, flags);
827
828 netif_info(lp, drv, dev, "Ring Param Settings: RX: %d, TX: %d\n",
829 lp->rx_ring_size, lp->tx_ring_size);
830
831 return 0;
832 }
833
834 static void pcnet32_get_strings(struct net_device *dev, u32 stringset,
835 u8 *data)
836 {
837 memcpy(data, pcnet32_gstrings_test, sizeof(pcnet32_gstrings_test));
838 }
839
840 static int pcnet32_get_sset_count(struct net_device *dev, int sset)
841 {
842 switch (sset) {
843 case ETH_SS_TEST:
844 return PCNET32_TEST_LEN;
845 default:
846 return -EOPNOTSUPP;
847 }
848 }
849
850 static void pcnet32_ethtool_test(struct net_device *dev,
851 struct ethtool_test *test, u64 * data)
852 {
853 struct pcnet32_private *lp = netdev_priv(dev);
854 int rc;
855
856 if (test->flags == ETH_TEST_FL_OFFLINE) {
857 rc = pcnet32_loopback_test(dev, data);
858 if (rc) {
859 netif_printk(lp, hw, KERN_DEBUG, dev,
860 "Loopback test failed\n");
861 test->flags |= ETH_TEST_FL_FAILED;
862 } else
863 netif_printk(lp, hw, KERN_DEBUG, dev,
864 "Loopback test passed\n");
865 } else
866 netif_printk(lp, hw, KERN_DEBUG, dev,
867 "No tests to run (specify 'Offline' on ethtool)\n");
868 } /* end pcnet32_ethtool_test */
869
870 static int pcnet32_loopback_test(struct net_device *dev, uint64_t * data1)
871 {
872 struct pcnet32_private *lp = netdev_priv(dev);
873 const struct pcnet32_access *a = lp->a; /* access to registers */
874 ulong ioaddr = dev->base_addr; /* card base I/O address */
875 struct sk_buff *skb; /* sk buff */
876 int x, i; /* counters */
877 int numbuffs = 4; /* number of TX/RX buffers and descs */
878 u16 status = 0x8300; /* TX ring status */
879 __le16 teststatus; /* test of ring status */
880 int rc; /* return code */
881 int size; /* size of packets */
882 unsigned char *packet; /* source packet data */
883 static const int data_len = 60; /* length of source packets */
884 unsigned long flags;
885 unsigned long ticks;
886
887 rc = 1; /* default to fail */
888
889 if (netif_running(dev))
890 pcnet32_netif_stop(dev);
891
892 spin_lock_irqsave(&lp->lock, flags);
893 lp->a->write_csr(ioaddr, CSR0, CSR0_STOP); /* stop the chip */
894
895 numbuffs = min(numbuffs, (int)min(lp->rx_ring_size, lp->tx_ring_size));
896
897 /* Reset the PCNET32 */
898 lp->a->reset(ioaddr);
899 lp->a->write_csr(ioaddr, CSR4, 0x0915); /* auto tx pad */
900
901 /* switch pcnet32 to 32bit mode */
902 lp->a->write_bcr(ioaddr, 20, 2);
903
904 /* purge & init rings but don't actually restart */
905 pcnet32_restart(dev, 0x0000);
906
907 lp->a->write_csr(ioaddr, CSR0, CSR0_STOP); /* Set STOP bit */
908
909 /* Initialize Transmit buffers. */
910 size = data_len + 15;
911 for (x = 0; x < numbuffs; x++) {
912 skb = netdev_alloc_skb(dev, size);
913 if (!skb) {
914 netif_printk(lp, hw, KERN_DEBUG, dev,
915 "Cannot allocate skb at line: %d!\n",
916 __LINE__);
917 goto clean_up;
918 }
919 packet = skb->data;
920 skb_put(skb, size); /* create space for data */
921 lp->tx_skbuff[x] = skb;
922 lp->tx_ring[x].length = cpu_to_le16(-skb->len);
923 lp->tx_ring[x].misc = 0;
924
925 /* put DA and SA into the skb */
926 for (i = 0; i < 6; i++)
927 *packet++ = dev->dev_addr[i];
928 for (i = 0; i < 6; i++)
929 *packet++ = dev->dev_addr[i];
930 /* type */
931 *packet++ = 0x08;
932 *packet++ = 0x06;
933 /* packet number */
934 *packet++ = x;
935 /* fill packet with data */
936 for (i = 0; i < data_len; i++)
937 *packet++ = i;
938
939 lp->tx_dma_addr[x] =
940 pci_map_single(lp->pci_dev, skb->data, skb->len,
941 PCI_DMA_TODEVICE);
942 if (pci_dma_mapping_error(lp->pci_dev, lp->tx_dma_addr[x])) {
943 netif_printk(lp, hw, KERN_DEBUG, dev,
944 "DMA mapping error at line: %d!\n",
945 __LINE__);
946 goto clean_up;
947 }
948 lp->tx_ring[x].base = cpu_to_le32(lp->tx_dma_addr[x]);
949 wmb(); /* Make sure owner changes after all others are visible */
950 lp->tx_ring[x].status = cpu_to_le16(status);
951 }
952
953 x = a->read_bcr(ioaddr, 32); /* set internal loopback in BCR32 */
954 a->write_bcr(ioaddr, 32, x | 0x0002);
955
956 /* set int loopback in CSR15 */
957 x = a->read_csr(ioaddr, CSR15) & 0xfffc;
958 lp->a->write_csr(ioaddr, CSR15, x | 0x0044);
959
960 teststatus = cpu_to_le16(0x8000);
961 lp->a->write_csr(ioaddr, CSR0, CSR0_START); /* Set STRT bit */
962
963 /* Check status of descriptors */
964 for (x = 0; x < numbuffs; x++) {
965 ticks = 0;
966 rmb();
967 while ((lp->rx_ring[x].status & teststatus) && (ticks < 200)) {
968 spin_unlock_irqrestore(&lp->lock, flags);
969 msleep(1);
970 spin_lock_irqsave(&lp->lock, flags);
971 rmb();
972 ticks++;
973 }
974 if (ticks == 200) {
975 netif_err(lp, hw, dev, "Desc %d failed to reset!\n", x);
976 break;
977 }
978 }
979
980 lp->a->write_csr(ioaddr, CSR0, CSR0_STOP); /* Set STOP bit */
981 wmb();
982 if (netif_msg_hw(lp) && netif_msg_pktdata(lp)) {
983 netdev_printk(KERN_DEBUG, dev, "RX loopback packets:\n");
984
985 for (x = 0; x < numbuffs; x++) {
986 netdev_printk(KERN_DEBUG, dev, "Packet %d: ", x);
987 skb = lp->rx_skbuff[x];
988 for (i = 0; i < size; i++)
989 pr_cont(" %02x", *(skb->data + i));
990 pr_cont("\n");
991 }
992 }
993
994 x = 0;
995 rc = 0;
996 while (x < numbuffs && !rc) {
997 skb = lp->rx_skbuff[x];
998 packet = lp->tx_skbuff[x]->data;
999 for (i = 0; i < size; i++) {
1000 if (*(skb->data + i) != packet[i]) {
1001 netif_printk(lp, hw, KERN_DEBUG, dev,
1002 "Error in compare! %2x - %02x %02x\n",
1003 i, *(skb->data + i), packet[i]);
1004 rc = 1;
1005 break;
1006 }
1007 }
1008 x++;
1009 }
1010
1011 clean_up:
1012 *data1 = rc;
1013 pcnet32_purge_tx_ring(dev);
1014
1015 x = a->read_csr(ioaddr, CSR15);
1016 a->write_csr(ioaddr, CSR15, (x & ~0x0044)); /* reset bits 6 and 2 */
1017
1018 x = a->read_bcr(ioaddr, 32); /* reset internal loopback */
1019 a->write_bcr(ioaddr, 32, (x & ~0x0002));
1020
1021 if (netif_running(dev)) {
1022 pcnet32_netif_start(dev);
1023 pcnet32_restart(dev, CSR0_NORMAL);
1024 } else {
1025 pcnet32_purge_rx_ring(dev);
1026 lp->a->write_bcr(ioaddr, 20, 4); /* return to 16bit mode */
1027 }
1028 spin_unlock_irqrestore(&lp->lock, flags);
1029
1030 return rc;
1031 } /* end pcnet32_loopback_test */
1032
1033 static int pcnet32_set_phys_id(struct net_device *dev,
1034 enum ethtool_phys_id_state state)
1035 {
1036 struct pcnet32_private *lp = netdev_priv(dev);
1037 const struct pcnet32_access *a = lp->a;
1038 ulong ioaddr = dev->base_addr;
1039 unsigned long flags;
1040 int i;
1041
1042 switch (state) {
1043 case ETHTOOL_ID_ACTIVE:
1044 /* Save the current value of the bcrs */
1045 spin_lock_irqsave(&lp->lock, flags);
1046 for (i = 4; i < 8; i++)
1047 lp->save_regs[i - 4] = a->read_bcr(ioaddr, i);
1048 spin_unlock_irqrestore(&lp->lock, flags);
1049 return 2; /* cycle on/off twice per second */
1050
1051 case ETHTOOL_ID_ON:
1052 case ETHTOOL_ID_OFF:
1053 /* Blink the led */
1054 spin_lock_irqsave(&lp->lock, flags);
1055 for (i = 4; i < 8; i++)
1056 a->write_bcr(ioaddr, i, a->read_bcr(ioaddr, i) ^ 0x4000);
1057 spin_unlock_irqrestore(&lp->lock, flags);
1058 break;
1059
1060 case ETHTOOL_ID_INACTIVE:
1061 /* Restore the original value of the bcrs */
1062 spin_lock_irqsave(&lp->lock, flags);
1063 for (i = 4; i < 8; i++)
1064 a->write_bcr(ioaddr, i, lp->save_regs[i - 4]);
1065 spin_unlock_irqrestore(&lp->lock, flags);
1066 }
1067 return 0;
1068 }
1069
1070 /*
1071 * lp->lock must be held.
1072 */
1073 static int pcnet32_suspend(struct net_device *dev, unsigned long *flags,
1074 int can_sleep)
1075 {
1076 int csr5;
1077 struct pcnet32_private *lp = netdev_priv(dev);
1078 const struct pcnet32_access *a = lp->a;
1079 ulong ioaddr = dev->base_addr;
1080 int ticks;
1081
1082 /* really old chips have to be stopped. */
1083 if (lp->chip_version < PCNET32_79C970A)
1084 return 0;
1085
1086 /* set SUSPEND (SPND) - CSR5 bit 0 */
1087 csr5 = a->read_csr(ioaddr, CSR5);
1088 a->write_csr(ioaddr, CSR5, csr5 | CSR5_SUSPEND);
1089
1090 /* poll waiting for bit to be set */
1091 ticks = 0;
1092 while (!(a->read_csr(ioaddr, CSR5) & CSR5_SUSPEND)) {
1093 spin_unlock_irqrestore(&lp->lock, *flags);
1094 if (can_sleep)
1095 msleep(1);
1096 else
1097 mdelay(1);
1098 spin_lock_irqsave(&lp->lock, *flags);
1099 ticks++;
1100 if (ticks > 200) {
1101 netif_printk(lp, hw, KERN_DEBUG, dev,
1102 "Error getting into suspend!\n");
1103 return 0;
1104 }
1105 }
1106 return 1;
1107 }
1108
1109 /*
1110 * process one receive descriptor entry
1111 */
1112
1113 static void pcnet32_rx_entry(struct net_device *dev,
1114 struct pcnet32_private *lp,
1115 struct pcnet32_rx_head *rxp,
1116 int entry)
1117 {
1118 int status = (short)le16_to_cpu(rxp->status) >> 8;
1119 int rx_in_place = 0;
1120 struct sk_buff *skb;
1121 short pkt_len;
1122
1123 if (status != 0x03) { /* There was an error. */
1124 /*
1125 * There is a tricky error noted by John Murphy,
1126 * <murf@perftech.com> to Russ Nelson: Even with full-sized
1127 * buffers it's possible for a jabber packet to use two
1128 * buffers, with only the last correctly noting the error.
1129 */
1130 if (status & 0x01) /* Only count a general error at the */
1131 dev->stats.rx_errors++; /* end of a packet. */
1132 if (status & 0x20)
1133 dev->stats.rx_frame_errors++;
1134 if (status & 0x10)
1135 dev->stats.rx_over_errors++;
1136 if (status & 0x08)
1137 dev->stats.rx_crc_errors++;
1138 if (status & 0x04)
1139 dev->stats.rx_fifo_errors++;
1140 return;
1141 }
1142
1143 pkt_len = (le32_to_cpu(rxp->msg_length) & 0xfff) - 4;
1144
1145 /* Discard oversize frames. */
1146 if (unlikely(pkt_len > PKT_BUF_SIZE)) {
1147 netif_err(lp, drv, dev, "Impossible packet size %d!\n",
1148 pkt_len);
1149 dev->stats.rx_errors++;
1150 return;
1151 }
1152 if (pkt_len < 60) {
1153 netif_err(lp, rx_err, dev, "Runt packet!\n");
1154 dev->stats.rx_errors++;
1155 return;
1156 }
1157
1158 if (pkt_len > rx_copybreak) {
1159 struct sk_buff *newskb;
1160 dma_addr_t new_dma_addr;
1161
1162 newskb = netdev_alloc_skb(dev, PKT_BUF_SKB);
1163 /*
1164 * map the new buffer, if mapping fails, drop the packet and
1165 * reuse the old buffer
1166 */
1167 if (newskb) {
1168 skb_reserve(newskb, NET_IP_ALIGN);
1169 new_dma_addr = pci_map_single(lp->pci_dev,
1170 newskb->data,
1171 PKT_BUF_SIZE,
1172 PCI_DMA_FROMDEVICE);
1173 if (pci_dma_mapping_error(lp->pci_dev, new_dma_addr)) {
1174 netif_err(lp, rx_err, dev,
1175 "DMA mapping error.\n");
1176 dev_kfree_skb(newskb);
1177 skb = NULL;
1178 } else {
1179 skb = lp->rx_skbuff[entry];
1180 pci_unmap_single(lp->pci_dev,
1181 lp->rx_dma_addr[entry],
1182 PKT_BUF_SIZE,
1183 PCI_DMA_FROMDEVICE);
1184 skb_put(skb, pkt_len);
1185 lp->rx_skbuff[entry] = newskb;
1186 lp->rx_dma_addr[entry] = new_dma_addr;
1187 rxp->base = cpu_to_le32(new_dma_addr);
1188 rx_in_place = 1;
1189 }
1190 } else
1191 skb = NULL;
1192 } else
1193 skb = netdev_alloc_skb(dev, pkt_len + NET_IP_ALIGN);
1194
1195 if (skb == NULL) {
1196 dev->stats.rx_dropped++;
1197 return;
1198 }
1199 if (!rx_in_place) {
1200 skb_reserve(skb, NET_IP_ALIGN);
1201 skb_put(skb, pkt_len); /* Make room */
1202 pci_dma_sync_single_for_cpu(lp->pci_dev,
1203 lp->rx_dma_addr[entry],
1204 pkt_len,
1205 PCI_DMA_FROMDEVICE);
1206 skb_copy_to_linear_data(skb,
1207 (unsigned char *)(lp->rx_skbuff[entry]->data),
1208 pkt_len);
1209 pci_dma_sync_single_for_device(lp->pci_dev,
1210 lp->rx_dma_addr[entry],
1211 pkt_len,
1212 PCI_DMA_FROMDEVICE);
1213 }
1214 dev->stats.rx_bytes += skb->len;
1215 skb->protocol = eth_type_trans(skb, dev);
1216 netif_receive_skb(skb);
1217 dev->stats.rx_packets++;
1218 }
1219
1220 static int pcnet32_rx(struct net_device *dev, int budget)
1221 {
1222 struct pcnet32_private *lp = netdev_priv(dev);
1223 int entry = lp->cur_rx & lp->rx_mod_mask;
1224 struct pcnet32_rx_head *rxp = &lp->rx_ring[entry];
1225 int npackets = 0;
1226
1227 /* If we own the next entry, it's a new packet. Send it up. */
1228 while (npackets < budget && (short)le16_to_cpu(rxp->status) >= 0) {
1229 pcnet32_rx_entry(dev, lp, rxp, entry);
1230 npackets += 1;
1231 /*
1232 * The docs say that the buffer length isn't touched, but Andrew
1233 * Boyd of QNX reports that some revs of the 79C965 clear it.
1234 */
1235 rxp->buf_length = cpu_to_le16(NEG_BUF_SIZE);
1236 wmb(); /* Make sure owner changes after others are visible */
1237 rxp->status = cpu_to_le16(0x8000);
1238 entry = (++lp->cur_rx) & lp->rx_mod_mask;
1239 rxp = &lp->rx_ring[entry];
1240 }
1241
1242 return npackets;
1243 }
1244
1245 static int pcnet32_tx(struct net_device *dev)
1246 {
1247 struct pcnet32_private *lp = netdev_priv(dev);
1248 unsigned int dirty_tx = lp->dirty_tx;
1249 int delta;
1250 int must_restart = 0;
1251
1252 while (dirty_tx != lp->cur_tx) {
1253 int entry = dirty_tx & lp->tx_mod_mask;
1254 int status = (short)le16_to_cpu(lp->tx_ring[entry].status);
1255
1256 if (status < 0)
1257 break; /* It still hasn't been Txed */
1258
1259 lp->tx_ring[entry].base = 0;
1260
1261 if (status & 0x4000) {
1262 /* There was a major error, log it. */
1263 int err_status = le32_to_cpu(lp->tx_ring[entry].misc);
1264 dev->stats.tx_errors++;
1265 netif_err(lp, tx_err, dev,
1266 "Tx error status=%04x err_status=%08x\n",
1267 status, err_status);
1268 if (err_status & 0x04000000)
1269 dev->stats.tx_aborted_errors++;
1270 if (err_status & 0x08000000)
1271 dev->stats.tx_carrier_errors++;
1272 if (err_status & 0x10000000)
1273 dev->stats.tx_window_errors++;
1274 #ifndef DO_DXSUFLO
1275 if (err_status & 0x40000000) {
1276 dev->stats.tx_fifo_errors++;
1277 /* Ackk! On FIFO errors the Tx unit is turned off! */
1278 /* Remove this verbosity later! */
1279 netif_err(lp, tx_err, dev, "Tx FIFO error!\n");
1280 must_restart = 1;
1281 }
1282 #else
1283 if (err_status & 0x40000000) {
1284 dev->stats.tx_fifo_errors++;
1285 if (!lp->dxsuflo) { /* If controller doesn't recover ... */
1286 /* Ackk! On FIFO errors the Tx unit is turned off! */
1287 /* Remove this verbosity later! */
1288 netif_err(lp, tx_err, dev, "Tx FIFO error!\n");
1289 must_restart = 1;
1290 }
1291 }
1292 #endif
1293 } else {
1294 if (status & 0x1800)
1295 dev->stats.collisions++;
1296 dev->stats.tx_packets++;
1297 }
1298
1299 /* We must free the original skb */
1300 if (lp->tx_skbuff[entry]) {
1301 pci_unmap_single(lp->pci_dev,
1302 lp->tx_dma_addr[entry],
1303 lp->tx_skbuff[entry]->
1304 len, PCI_DMA_TODEVICE);
1305 dev_kfree_skb_any(lp->tx_skbuff[entry]);
1306 lp->tx_skbuff[entry] = NULL;
1307 lp->tx_dma_addr[entry] = 0;
1308 }
1309 dirty_tx++;
1310 }
1311
1312 delta = (lp->cur_tx - dirty_tx) & (lp->tx_mod_mask + lp->tx_ring_size);
1313 if (delta > lp->tx_ring_size) {
1314 netif_err(lp, drv, dev, "out-of-sync dirty pointer, %d vs. %d, full=%d\n",
1315 dirty_tx, lp->cur_tx, lp->tx_full);
1316 dirty_tx += lp->tx_ring_size;
1317 delta -= lp->tx_ring_size;
1318 }
1319
1320 if (lp->tx_full &&
1321 netif_queue_stopped(dev) &&
1322 delta < lp->tx_ring_size - 2) {
1323 /* The ring is no longer full, clear tbusy. */
1324 lp->tx_full = 0;
1325 netif_wake_queue(dev);
1326 }
1327 lp->dirty_tx = dirty_tx;
1328
1329 return must_restart;
1330 }
1331
1332 static int pcnet32_poll(struct napi_struct *napi, int budget)
1333 {
1334 struct pcnet32_private *lp = container_of(napi, struct pcnet32_private, napi);
1335 struct net_device *dev = lp->dev;
1336 unsigned long ioaddr = dev->base_addr;
1337 unsigned long flags;
1338 int work_done;
1339 u16 val;
1340
1341 work_done = pcnet32_rx(dev, budget);
1342
1343 spin_lock_irqsave(&lp->lock, flags);
1344 if (pcnet32_tx(dev)) {
1345 /* reset the chip to clear the error condition, then restart */
1346 lp->a->reset(ioaddr);
1347 lp->a->write_csr(ioaddr, CSR4, 0x0915); /* auto tx pad */
1348 pcnet32_restart(dev, CSR0_START);
1349 netif_wake_queue(dev);
1350 }
1351 spin_unlock_irqrestore(&lp->lock, flags);
1352
1353 if (work_done < budget) {
1354 spin_lock_irqsave(&lp->lock, flags);
1355
1356 __napi_complete(napi);
1357
1358 /* clear interrupt masks */
1359 val = lp->a->read_csr(ioaddr, CSR3);
1360 val &= 0x00ff;
1361 lp->a->write_csr(ioaddr, CSR3, val);
1362
1363 /* Set interrupt enable. */
1364 lp->a->write_csr(ioaddr, CSR0, CSR0_INTEN);
1365
1366 spin_unlock_irqrestore(&lp->lock, flags);
1367 }
1368 return work_done;
1369 }
1370
1371 #define PCNET32_REGS_PER_PHY 32
1372 #define PCNET32_MAX_PHYS 32
1373 static int pcnet32_get_regs_len(struct net_device *dev)
1374 {
1375 struct pcnet32_private *lp = netdev_priv(dev);
1376 int j = lp->phycount * PCNET32_REGS_PER_PHY;
1377
1378 return (PCNET32_NUM_REGS + j) * sizeof(u16);
1379 }
1380
1381 static void pcnet32_get_regs(struct net_device *dev, struct ethtool_regs *regs,
1382 void *ptr)
1383 {
1384 int i, csr0;
1385 u16 *buff = ptr;
1386 struct pcnet32_private *lp = netdev_priv(dev);
1387 const struct pcnet32_access *a = lp->a;
1388 ulong ioaddr = dev->base_addr;
1389 unsigned long flags;
1390
1391 spin_lock_irqsave(&lp->lock, flags);
1392
1393 csr0 = a->read_csr(ioaddr, CSR0);
1394 if (!(csr0 & CSR0_STOP)) /* If not stopped */
1395 pcnet32_suspend(dev, &flags, 1);
1396
1397 /* read address PROM */
1398 for (i = 0; i < 16; i += 2)
1399 *buff++ = inw(ioaddr + i);
1400
1401 /* read control and status registers */
1402 for (i = 0; i < 90; i++)
1403 *buff++ = a->read_csr(ioaddr, i);
1404
1405 *buff++ = a->read_csr(ioaddr, 112);
1406 *buff++ = a->read_csr(ioaddr, 114);
1407
1408 /* read bus configuration registers */
1409 for (i = 0; i < 30; i++)
1410 *buff++ = a->read_bcr(ioaddr, i);
1411
1412 *buff++ = 0; /* skip bcr30 so as not to hang 79C976 */
1413
1414 for (i = 31; i < 36; i++)
1415 *buff++ = a->read_bcr(ioaddr, i);
1416
1417 /* read mii phy registers */
1418 if (lp->mii) {
1419 int j;
1420 for (j = 0; j < PCNET32_MAX_PHYS; j++) {
1421 if (lp->phymask & (1 << j)) {
1422 for (i = 0; i < PCNET32_REGS_PER_PHY; i++) {
1423 lp->a->write_bcr(ioaddr, 33,
1424 (j << 5) | i);
1425 *buff++ = lp->a->read_bcr(ioaddr, 34);
1426 }
1427 }
1428 }
1429 }
1430
1431 if (!(csr0 & CSR0_STOP)) { /* If not stopped */
1432 int csr5;
1433
1434 /* clear SUSPEND (SPND) - CSR5 bit 0 */
1435 csr5 = a->read_csr(ioaddr, CSR5);
1436 a->write_csr(ioaddr, CSR5, csr5 & (~CSR5_SUSPEND));
1437 }
1438
1439 spin_unlock_irqrestore(&lp->lock, flags);
1440 }
1441
1442 static const struct ethtool_ops pcnet32_ethtool_ops = {
1443 .get_settings = pcnet32_get_settings,
1444 .set_settings = pcnet32_set_settings,
1445 .get_drvinfo = pcnet32_get_drvinfo,
1446 .get_msglevel = pcnet32_get_msglevel,
1447 .set_msglevel = pcnet32_set_msglevel,
1448 .nway_reset = pcnet32_nway_reset,
1449 .get_link = pcnet32_get_link,
1450 .get_ringparam = pcnet32_get_ringparam,
1451 .set_ringparam = pcnet32_set_ringparam,
1452 .get_strings = pcnet32_get_strings,
1453 .self_test = pcnet32_ethtool_test,
1454 .set_phys_id = pcnet32_set_phys_id,
1455 .get_regs_len = pcnet32_get_regs_len,
1456 .get_regs = pcnet32_get_regs,
1457 .get_sset_count = pcnet32_get_sset_count,
1458 };
1459
1460 /* only probes for non-PCI devices, the rest are handled by
1461 * pci_register_driver via pcnet32_probe_pci */
1462
1463 static void pcnet32_probe_vlbus(unsigned int *pcnet32_portlist)
1464 {
1465 unsigned int *port, ioaddr;
1466
1467 /* search for PCnet32 VLB cards at known addresses */
1468 for (port = pcnet32_portlist; (ioaddr = *port); port++) {
1469 if (request_region
1470 (ioaddr, PCNET32_TOTAL_SIZE, "pcnet32_probe_vlbus")) {
1471 /* check if there is really a pcnet chip on that ioaddr */
1472 if ((inb(ioaddr + 14) == 0x57) &&
1473 (inb(ioaddr + 15) == 0x57)) {
1474 pcnet32_probe1(ioaddr, 0, NULL);
1475 } else {
1476 release_region(ioaddr, PCNET32_TOTAL_SIZE);
1477 }
1478 }
1479 }
1480 }
1481
1482 static int
1483 pcnet32_probe_pci(struct pci_dev *pdev, const struct pci_device_id *ent)
1484 {
1485 unsigned long ioaddr;
1486 int err;
1487
1488 err = pci_enable_device(pdev);
1489 if (err < 0) {
1490 if (pcnet32_debug & NETIF_MSG_PROBE)
1491 pr_err("failed to enable device -- err=%d\n", err);
1492 return err;
1493 }
1494 pci_set_master(pdev);
1495
1496 ioaddr = pci_resource_start(pdev, 0);
1497 if (!ioaddr) {
1498 if (pcnet32_debug & NETIF_MSG_PROBE)
1499 pr_err("card has no PCI IO resources, aborting\n");
1500 return -ENODEV;
1501 }
1502
1503 err = pci_set_dma_mask(pdev, PCNET32_DMA_MASK);
1504 if (err) {
1505 if (pcnet32_debug & NETIF_MSG_PROBE)
1506 pr_err("architecture does not support 32bit PCI busmaster DMA\n");
1507 return err;
1508 }
1509 if (!request_region(ioaddr, PCNET32_TOTAL_SIZE, "pcnet32_probe_pci")) {
1510 if (pcnet32_debug & NETIF_MSG_PROBE)
1511 pr_err("io address range already allocated\n");
1512 return -EBUSY;
1513 }
1514
1515 err = pcnet32_probe1(ioaddr, 1, pdev);
1516 if (err < 0)
1517 pci_disable_device(pdev);
1518
1519 return err;
1520 }
1521
1522 static const struct net_device_ops pcnet32_netdev_ops = {
1523 .ndo_open = pcnet32_open,
1524 .ndo_stop = pcnet32_close,
1525 .ndo_start_xmit = pcnet32_start_xmit,
1526 .ndo_tx_timeout = pcnet32_tx_timeout,
1527 .ndo_get_stats = pcnet32_get_stats,
1528 .ndo_set_rx_mode = pcnet32_set_multicast_list,
1529 .ndo_do_ioctl = pcnet32_ioctl,
1530 .ndo_change_mtu = eth_change_mtu,
1531 .ndo_set_mac_address = eth_mac_addr,
1532 .ndo_validate_addr = eth_validate_addr,
1533 #ifdef CONFIG_NET_POLL_CONTROLLER
1534 .ndo_poll_controller = pcnet32_poll_controller,
1535 #endif
1536 };
1537
1538 /* pcnet32_probe1
1539 * Called from both pcnet32_probe_vlbus and pcnet_probe_pci.
1540 * pdev will be NULL when called from pcnet32_probe_vlbus.
1541 */
1542 static int
1543 pcnet32_probe1(unsigned long ioaddr, int shared, struct pci_dev *pdev)
1544 {
1545 struct pcnet32_private *lp;
1546 int i, media;
1547 int fdx, mii, fset, dxsuflo, sram;
1548 int chip_version;
1549 char *chipname;
1550 struct net_device *dev;
1551 const struct pcnet32_access *a = NULL;
1552 u8 promaddr[ETH_ALEN];
1553 int ret = -ENODEV;
1554
1555 /* reset the chip */
1556 pcnet32_wio_reset(ioaddr);
1557
1558 /* NOTE: 16-bit check is first, otherwise some older PCnet chips fail */
1559 if (pcnet32_wio_read_csr(ioaddr, 0) == 4 && pcnet32_wio_check(ioaddr)) {
1560 a = &pcnet32_wio;
1561 } else {
1562 pcnet32_dwio_reset(ioaddr);
1563 if (pcnet32_dwio_read_csr(ioaddr, 0) == 4 &&
1564 pcnet32_dwio_check(ioaddr)) {
1565 a = &pcnet32_dwio;
1566 } else {
1567 if (pcnet32_debug & NETIF_MSG_PROBE)
1568 pr_err("No access methods\n");
1569 goto err_release_region;
1570 }
1571 }
1572
1573 chip_version =
1574 a->read_csr(ioaddr, 88) | (a->read_csr(ioaddr, 89) << 16);
1575 if ((pcnet32_debug & NETIF_MSG_PROBE) && (pcnet32_debug & NETIF_MSG_HW))
1576 pr_info(" PCnet chip version is %#x\n", chip_version);
1577 if ((chip_version & 0xfff) != 0x003) {
1578 if (pcnet32_debug & NETIF_MSG_PROBE)
1579 pr_info("Unsupported chip version\n");
1580 goto err_release_region;
1581 }
1582
1583 /* initialize variables */
1584 fdx = mii = fset = dxsuflo = sram = 0;
1585 chip_version = (chip_version >> 12) & 0xffff;
1586
1587 switch (chip_version) {
1588 case 0x2420:
1589 chipname = "PCnet/PCI 79C970"; /* PCI */
1590 break;
1591 case 0x2430:
1592 if (shared)
1593 chipname = "PCnet/PCI 79C970"; /* 970 gives the wrong chip id back */
1594 else
1595 chipname = "PCnet/32 79C965"; /* 486/VL bus */
1596 break;
1597 case 0x2621:
1598 chipname = "PCnet/PCI II 79C970A"; /* PCI */
1599 fdx = 1;
1600 break;
1601 case 0x2623:
1602 chipname = "PCnet/FAST 79C971"; /* PCI */
1603 fdx = 1;
1604 mii = 1;
1605 fset = 1;
1606 break;
1607 case 0x2624:
1608 chipname = "PCnet/FAST+ 79C972"; /* PCI */
1609 fdx = 1;
1610 mii = 1;
1611 fset = 1;
1612 break;
1613 case 0x2625:
1614 chipname = "PCnet/FAST III 79C973"; /* PCI */
1615 fdx = 1;
1616 mii = 1;
1617 sram = 1;
1618 break;
1619 case 0x2626:
1620 chipname = "PCnet/Home 79C978"; /* PCI */
1621 fdx = 1;
1622 /*
1623 * This is based on specs published at www.amd.com. This section
1624 * assumes that a card with a 79C978 wants to go into standard
1625 * ethernet mode. The 79C978 can also go into 1Mb HomePNA mode,
1626 * and the module option homepna=1 can select this instead.
1627 */
1628 media = a->read_bcr(ioaddr, 49);
1629 media &= ~3; /* default to 10Mb ethernet */
1630 if (cards_found < MAX_UNITS && homepna[cards_found])
1631 media |= 1; /* switch to home wiring mode */
1632 if (pcnet32_debug & NETIF_MSG_PROBE)
1633 printk(KERN_DEBUG PFX "media set to %sMbit mode\n",
1634 (media & 1) ? "1" : "10");
1635 a->write_bcr(ioaddr, 49, media);
1636 break;
1637 case 0x2627:
1638 chipname = "PCnet/FAST III 79C975"; /* PCI */
1639 fdx = 1;
1640 mii = 1;
1641 sram = 1;
1642 break;
1643 case 0x2628:
1644 chipname = "PCnet/PRO 79C976";
1645 fdx = 1;
1646 mii = 1;
1647 break;
1648 default:
1649 if (pcnet32_debug & NETIF_MSG_PROBE)
1650 pr_info("PCnet version %#x, no PCnet32 chip\n",
1651 chip_version);
1652 goto err_release_region;
1653 }
1654
1655 /*
1656 * On selected chips turn on the BCR18:NOUFLO bit. This stops transmit
1657 * starting until the packet is loaded. Strike one for reliability, lose
1658 * one for latency - although on PCI this isn't a big loss. Older chips
1659 * have FIFO's smaller than a packet, so you can't do this.
1660 * Turn on BCR18:BurstRdEn and BCR18:BurstWrEn.
1661 */
1662
1663 if (fset) {
1664 a->write_bcr(ioaddr, 18, (a->read_bcr(ioaddr, 18) | 0x0860));
1665 a->write_csr(ioaddr, 80,
1666 (a->read_csr(ioaddr, 80) & 0x0C00) | 0x0c00);
1667 dxsuflo = 1;
1668 }
1669
1670 /*
1671 * The Am79C973/Am79C975 controllers come with 12K of SRAM
1672 * which we can use for the Tx/Rx buffers but most importantly,
1673 * the use of SRAM allow us to use the BCR18:NOUFLO bit to avoid
1674 * Tx fifo underflows.
1675 */
1676 if (sram) {
1677 /*
1678 * The SRAM is being configured in two steps. First we
1679 * set the SRAM size in the BCR25:SRAM_SIZE bits. According
1680 * to the datasheet, each bit corresponds to a 512-byte
1681 * page so we can have at most 24 pages. The SRAM_SIZE
1682 * holds the value of the upper 8 bits of the 16-bit SRAM size.
1683 * The low 8-bits start at 0x00 and end at 0xff. So the
1684 * address range is from 0x0000 up to 0x17ff. Therefore,
1685 * the SRAM_SIZE is set to 0x17. The next step is to set
1686 * the BCR26:SRAM_BND midway through so the Tx and Rx
1687 * buffers can share the SRAM equally.
1688 */
1689 a->write_bcr(ioaddr, 25, 0x17);
1690 a->write_bcr(ioaddr, 26, 0xc);
1691 /* And finally enable the NOUFLO bit */
1692 a->write_bcr(ioaddr, 18, a->read_bcr(ioaddr, 18) | (1 << 11));
1693 }
1694
1695 dev = alloc_etherdev(sizeof(*lp));
1696 if (!dev) {
1697 ret = -ENOMEM;
1698 goto err_release_region;
1699 }
1700
1701 if (pdev)
1702 SET_NETDEV_DEV(dev, &pdev->dev);
1703
1704 if (pcnet32_debug & NETIF_MSG_PROBE)
1705 pr_info("%s at %#3lx,", chipname, ioaddr);
1706
1707 /* In most chips, after a chip reset, the ethernet address is read from the
1708 * station address PROM at the base address and programmed into the
1709 * "Physical Address Registers" CSR12-14.
1710 * As a precautionary measure, we read the PROM values and complain if
1711 * they disagree with the CSRs. If they miscompare, and the PROM addr
1712 * is valid, then the PROM addr is used.
1713 */
1714 for (i = 0; i < 3; i++) {
1715 unsigned int val;
1716 val = a->read_csr(ioaddr, i + 12) & 0x0ffff;
1717 /* There may be endianness issues here. */
1718 dev->dev_addr[2 * i] = val & 0x0ff;
1719 dev->dev_addr[2 * i + 1] = (val >> 8) & 0x0ff;
1720 }
1721
1722 /* read PROM address and compare with CSR address */
1723 for (i = 0; i < ETH_ALEN; i++)
1724 promaddr[i] = inb(ioaddr + i);
1725
1726 if (!ether_addr_equal(promaddr, dev->dev_addr) ||
1727 !is_valid_ether_addr(dev->dev_addr)) {
1728 if (is_valid_ether_addr(promaddr)) {
1729 if (pcnet32_debug & NETIF_MSG_PROBE) {
1730 pr_cont(" warning: CSR address invalid,\n");
1731 pr_info(" using instead PROM address of");
1732 }
1733 memcpy(dev->dev_addr, promaddr, ETH_ALEN);
1734 }
1735 }
1736
1737 /* if the ethernet address is not valid, force to 00:00:00:00:00:00 */
1738 if (!is_valid_ether_addr(dev->dev_addr))
1739 eth_zero_addr(dev->dev_addr);
1740
1741 if (pcnet32_debug & NETIF_MSG_PROBE) {
1742 pr_cont(" %pM", dev->dev_addr);
1743
1744 /* Version 0x2623 and 0x2624 */
1745 if (((chip_version + 1) & 0xfffe) == 0x2624) {
1746 i = a->read_csr(ioaddr, 80) & 0x0C00; /* Check tx_start_pt */
1747 pr_info(" tx_start_pt(0x%04x):", i);
1748 switch (i >> 10) {
1749 case 0:
1750 pr_cont(" 20 bytes,");
1751 break;
1752 case 1:
1753 pr_cont(" 64 bytes,");
1754 break;
1755 case 2:
1756 pr_cont(" 128 bytes,");
1757 break;
1758 case 3:
1759 pr_cont("~220 bytes,");
1760 break;
1761 }
1762 i = a->read_bcr(ioaddr, 18); /* Check Burst/Bus control */
1763 pr_cont(" BCR18(%x):", i & 0xffff);
1764 if (i & (1 << 5))
1765 pr_cont("BurstWrEn ");
1766 if (i & (1 << 6))
1767 pr_cont("BurstRdEn ");
1768 if (i & (1 << 7))
1769 pr_cont("DWordIO ");
1770 if (i & (1 << 11))
1771 pr_cont("NoUFlow ");
1772 i = a->read_bcr(ioaddr, 25);
1773 pr_info(" SRAMSIZE=0x%04x,", i << 8);
1774 i = a->read_bcr(ioaddr, 26);
1775 pr_cont(" SRAM_BND=0x%04x,", i << 8);
1776 i = a->read_bcr(ioaddr, 27);
1777 if (i & (1 << 14))
1778 pr_cont("LowLatRx");
1779 }
1780 }
1781
1782 dev->base_addr = ioaddr;
1783 lp = netdev_priv(dev);
1784 /* pci_alloc_consistent returns page-aligned memory, so we do not have to check the alignment */
1785 lp->init_block = pci_alloc_consistent(pdev, sizeof(*lp->init_block),
1786 &lp->init_dma_addr);
1787 if (!lp->init_block) {
1788 if (pcnet32_debug & NETIF_MSG_PROBE)
1789 pr_err("Consistent memory allocation failed\n");
1790 ret = -ENOMEM;
1791 goto err_free_netdev;
1792 }
1793 lp->pci_dev = pdev;
1794
1795 lp->dev = dev;
1796
1797 spin_lock_init(&lp->lock);
1798
1799 lp->name = chipname;
1800 lp->shared_irq = shared;
1801 lp->tx_ring_size = TX_RING_SIZE; /* default tx ring size */
1802 lp->rx_ring_size = RX_RING_SIZE; /* default rx ring size */
1803 lp->tx_mod_mask = lp->tx_ring_size - 1;
1804 lp->rx_mod_mask = lp->rx_ring_size - 1;
1805 lp->tx_len_bits = (PCNET32_LOG_TX_BUFFERS << 12);
1806 lp->rx_len_bits = (PCNET32_LOG_RX_BUFFERS << 4);
1807 lp->mii_if.full_duplex = fdx;
1808 lp->mii_if.phy_id_mask = 0x1f;
1809 lp->mii_if.reg_num_mask = 0x1f;
1810 lp->dxsuflo = dxsuflo;
1811 lp->mii = mii;
1812 lp->chip_version = chip_version;
1813 lp->msg_enable = pcnet32_debug;
1814 if ((cards_found >= MAX_UNITS) ||
1815 (options[cards_found] >= sizeof(options_mapping)))
1816 lp->options = PCNET32_PORT_ASEL;
1817 else
1818 lp->options = options_mapping[options[cards_found]];
1819 lp->mii_if.dev = dev;
1820 lp->mii_if.mdio_read = mdio_read;
1821 lp->mii_if.mdio_write = mdio_write;
1822
1823 /* napi.weight is used in both the napi and non-napi cases */
1824 lp->napi.weight = lp->rx_ring_size / 2;
1825
1826 netif_napi_add(dev, &lp->napi, pcnet32_poll, lp->rx_ring_size / 2);
1827
1828 if (fdx && !(lp->options & PCNET32_PORT_ASEL) &&
1829 ((cards_found >= MAX_UNITS) || full_duplex[cards_found]))
1830 lp->options |= PCNET32_PORT_FD;
1831
1832 lp->a = a;
1833
1834 /* prior to register_netdev, dev->name is not yet correct */
1835 if (pcnet32_alloc_ring(dev, pci_name(lp->pci_dev))) {
1836 ret = -ENOMEM;
1837 goto err_free_ring;
1838 }
1839 /* detect special T1/E1 WAN card by checking for MAC address */
1840 if (dev->dev_addr[0] == 0x00 && dev->dev_addr[1] == 0xe0 &&
1841 dev->dev_addr[2] == 0x75)
1842 lp->options = PCNET32_PORT_FD | PCNET32_PORT_GPSI;
1843
1844 lp->init_block->mode = cpu_to_le16(0x0003); /* Disable Rx and Tx. */
1845 lp->init_block->tlen_rlen =
1846 cpu_to_le16(lp->tx_len_bits | lp->rx_len_bits);
1847 for (i = 0; i < 6; i++)
1848 lp->init_block->phys_addr[i] = dev->dev_addr[i];
1849 lp->init_block->filter[0] = 0x00000000;
1850 lp->init_block->filter[1] = 0x00000000;
1851 lp->init_block->rx_ring = cpu_to_le32(lp->rx_ring_dma_addr);
1852 lp->init_block->tx_ring = cpu_to_le32(lp->tx_ring_dma_addr);
1853
1854 /* switch pcnet32 to 32bit mode */
1855 a->write_bcr(ioaddr, 20, 2);
1856
1857 a->write_csr(ioaddr, 1, (lp->init_dma_addr & 0xffff));
1858 a->write_csr(ioaddr, 2, (lp->init_dma_addr >> 16));
1859
1860 if (pdev) { /* use the IRQ provided by PCI */
1861 dev->irq = pdev->irq;
1862 if (pcnet32_debug & NETIF_MSG_PROBE)
1863 pr_cont(" assigned IRQ %d\n", dev->irq);
1864 } else {
1865 unsigned long irq_mask = probe_irq_on();
1866
1867 /*
1868 * To auto-IRQ we enable the initialization-done and DMA error
1869 * interrupts. For ISA boards we get a DMA error, but VLB and PCI
1870 * boards will work.
1871 */
1872 /* Trigger an initialization just for the interrupt. */
1873 a->write_csr(ioaddr, CSR0, CSR0_INTEN | CSR0_INIT);
1874 mdelay(1);
1875
1876 dev->irq = probe_irq_off(irq_mask);
1877 if (!dev->irq) {
1878 if (pcnet32_debug & NETIF_MSG_PROBE)
1879 pr_cont(", failed to detect IRQ line\n");
1880 ret = -ENODEV;
1881 goto err_free_ring;
1882 }
1883 if (pcnet32_debug & NETIF_MSG_PROBE)
1884 pr_cont(", probed IRQ %d\n", dev->irq);
1885 }
1886
1887 /* Set the mii phy_id so that we can query the link state */
1888 if (lp->mii) {
1889 /* lp->phycount and lp->phymask are set to 0 by memset above */
1890
1891 lp->mii_if.phy_id = ((lp->a->read_bcr(ioaddr, 33)) >> 5) & 0x1f;
1892 /* scan for PHYs */
1893 for (i = 0; i < PCNET32_MAX_PHYS; i++) {
1894 unsigned short id1, id2;
1895
1896 id1 = mdio_read(dev, i, MII_PHYSID1);
1897 if (id1 == 0xffff)
1898 continue;
1899 id2 = mdio_read(dev, i, MII_PHYSID2);
1900 if (id2 == 0xffff)
1901 continue;
1902 if (i == 31 && ((chip_version + 1) & 0xfffe) == 0x2624)
1903 continue; /* 79C971 & 79C972 have phantom phy at id 31 */
1904 lp->phycount++;
1905 lp->phymask |= (1 << i);
1906 lp->mii_if.phy_id = i;
1907 if (pcnet32_debug & NETIF_MSG_PROBE)
1908 pr_info("Found PHY %04x:%04x at address %d\n",
1909 id1, id2, i);
1910 }
1911 lp->a->write_bcr(ioaddr, 33, (lp->mii_if.phy_id) << 5);
1912 if (lp->phycount > 1)
1913 lp->options |= PCNET32_PORT_MII;
1914 }
1915
1916 init_timer(&lp->watchdog_timer);
1917 lp->watchdog_timer.data = (unsigned long)dev;
1918 lp->watchdog_timer.function = (void *)&pcnet32_watchdog;
1919
1920 /* The PCNET32-specific entries in the device structure. */
1921 dev->netdev_ops = &pcnet32_netdev_ops;
1922 dev->ethtool_ops = &pcnet32_ethtool_ops;
1923 dev->watchdog_timeo = (5 * HZ);
1924
1925 /* Fill in the generic fields of the device structure. */
1926 if (register_netdev(dev))
1927 goto err_free_ring;
1928
1929 if (pdev) {
1930 pci_set_drvdata(pdev, dev);
1931 } else {
1932 lp->next = pcnet32_dev;
1933 pcnet32_dev = dev;
1934 }
1935
1936 if (pcnet32_debug & NETIF_MSG_PROBE)
1937 pr_info("%s: registered as %s\n", dev->name, lp->name);
1938 cards_found++;
1939
1940 /* enable LED writes */
1941 a->write_bcr(ioaddr, 2, a->read_bcr(ioaddr, 2) | 0x1000);
1942
1943 return 0;
1944
1945 err_free_ring:
1946 pcnet32_free_ring(dev);
1947 pci_free_consistent(lp->pci_dev, sizeof(*lp->init_block),
1948 lp->init_block, lp->init_dma_addr);
1949 err_free_netdev:
1950 free_netdev(dev);
1951 err_release_region:
1952 release_region(ioaddr, PCNET32_TOTAL_SIZE);
1953 return ret;
1954 }
1955
1956 /* if any allocation fails, caller must also call pcnet32_free_ring */
1957 static int pcnet32_alloc_ring(struct net_device *dev, const char *name)
1958 {
1959 struct pcnet32_private *lp = netdev_priv(dev);
1960
1961 lp->tx_ring = pci_alloc_consistent(lp->pci_dev,
1962 sizeof(struct pcnet32_tx_head) *
1963 lp->tx_ring_size,
1964 &lp->tx_ring_dma_addr);
1965 if (lp->tx_ring == NULL) {
1966 netif_err(lp, drv, dev, "Consistent memory allocation failed\n");
1967 return -ENOMEM;
1968 }
1969
1970 lp->rx_ring = pci_alloc_consistent(lp->pci_dev,
1971 sizeof(struct pcnet32_rx_head) *
1972 lp->rx_ring_size,
1973 &lp->rx_ring_dma_addr);
1974 if (lp->rx_ring == NULL) {
1975 netif_err(lp, drv, dev, "Consistent memory allocation failed\n");
1976 return -ENOMEM;
1977 }
1978
1979 lp->tx_dma_addr = kcalloc(lp->tx_ring_size, sizeof(dma_addr_t),
1980 GFP_ATOMIC);
1981 if (!lp->tx_dma_addr)
1982 return -ENOMEM;
1983
1984 lp->rx_dma_addr = kcalloc(lp->rx_ring_size, sizeof(dma_addr_t),
1985 GFP_ATOMIC);
1986 if (!lp->rx_dma_addr)
1987 return -ENOMEM;
1988
1989 lp->tx_skbuff = kcalloc(lp->tx_ring_size, sizeof(struct sk_buff *),
1990 GFP_ATOMIC);
1991 if (!lp->tx_skbuff)
1992 return -ENOMEM;
1993
1994 lp->rx_skbuff = kcalloc(lp->rx_ring_size, sizeof(struct sk_buff *),
1995 GFP_ATOMIC);
1996 if (!lp->rx_skbuff)
1997 return -ENOMEM;
1998
1999 return 0;
2000 }
2001
2002 static void pcnet32_free_ring(struct net_device *dev)
2003 {
2004 struct pcnet32_private *lp = netdev_priv(dev);
2005
2006 kfree(lp->tx_skbuff);
2007 lp->tx_skbuff = NULL;
2008
2009 kfree(lp->rx_skbuff);
2010 lp->rx_skbuff = NULL;
2011
2012 kfree(lp->tx_dma_addr);
2013 lp->tx_dma_addr = NULL;
2014
2015 kfree(lp->rx_dma_addr);
2016 lp->rx_dma_addr = NULL;
2017
2018 if (lp->tx_ring) {
2019 pci_free_consistent(lp->pci_dev,
2020 sizeof(struct pcnet32_tx_head) *
2021 lp->tx_ring_size, lp->tx_ring,
2022 lp->tx_ring_dma_addr);
2023 lp->tx_ring = NULL;
2024 }
2025
2026 if (lp->rx_ring) {
2027 pci_free_consistent(lp->pci_dev,
2028 sizeof(struct pcnet32_rx_head) *
2029 lp->rx_ring_size, lp->rx_ring,
2030 lp->rx_ring_dma_addr);
2031 lp->rx_ring = NULL;
2032 }
2033 }
2034
2035 static int pcnet32_open(struct net_device *dev)
2036 {
2037 struct pcnet32_private *lp = netdev_priv(dev);
2038 struct pci_dev *pdev = lp->pci_dev;
2039 unsigned long ioaddr = dev->base_addr;
2040 u16 val;
2041 int i;
2042 int rc;
2043 unsigned long flags;
2044
2045 if (request_irq(dev->irq, pcnet32_interrupt,
2046 lp->shared_irq ? IRQF_SHARED : 0, dev->name,
2047 (void *)dev)) {
2048 return -EAGAIN;
2049 }
2050
2051 spin_lock_irqsave(&lp->lock, flags);
2052 /* Check for a valid station address */
2053 if (!is_valid_ether_addr(dev->dev_addr)) {
2054 rc = -EINVAL;
2055 goto err_free_irq;
2056 }
2057
2058 /* Reset the PCNET32 */
2059 lp->a->reset(ioaddr);
2060
2061 /* switch pcnet32 to 32bit mode */
2062 lp->a->write_bcr(ioaddr, 20, 2);
2063
2064 netif_printk(lp, ifup, KERN_DEBUG, dev,
2065 "%s() irq %d tx/rx rings %#x/%#x init %#x\n",
2066 __func__, dev->irq, (u32) (lp->tx_ring_dma_addr),
2067 (u32) (lp->rx_ring_dma_addr),
2068 (u32) (lp->init_dma_addr));
2069
2070 /* set/reset autoselect bit */
2071 val = lp->a->read_bcr(ioaddr, 2) & ~2;
2072 if (lp->options & PCNET32_PORT_ASEL)
2073 val |= 2;
2074 lp->a->write_bcr(ioaddr, 2, val);
2075
2076 /* handle full duplex setting */
2077 if (lp->mii_if.full_duplex) {
2078 val = lp->a->read_bcr(ioaddr, 9) & ~3;
2079 if (lp->options & PCNET32_PORT_FD) {
2080 val |= 1;
2081 if (lp->options == (PCNET32_PORT_FD | PCNET32_PORT_AUI))
2082 val |= 2;
2083 } else if (lp->options & PCNET32_PORT_ASEL) {
2084 /* workaround of xSeries250, turn on for 79C975 only */
2085 if (lp->chip_version == 0x2627)
2086 val |= 3;
2087 }
2088 lp->a->write_bcr(ioaddr, 9, val);
2089 }
2090
2091 /* set/reset GPSI bit in test register */
2092 val = lp->a->read_csr(ioaddr, 124) & ~0x10;
2093 if ((lp->options & PCNET32_PORT_PORTSEL) == PCNET32_PORT_GPSI)
2094 val |= 0x10;
2095 lp->a->write_csr(ioaddr, 124, val);
2096
2097 /* Allied Telesyn AT 2700/2701 FX are 100Mbit only and do not negotiate */
2098 if (pdev && pdev->subsystem_vendor == PCI_VENDOR_ID_AT &&
2099 (pdev->subsystem_device == PCI_SUBDEVICE_ID_AT_2700FX ||
2100 pdev->subsystem_device == PCI_SUBDEVICE_ID_AT_2701FX)) {
2101 if (lp->options & PCNET32_PORT_ASEL) {
2102 lp->options = PCNET32_PORT_FD | PCNET32_PORT_100;
2103 netif_printk(lp, link, KERN_DEBUG, dev,
2104 "Setting 100Mb-Full Duplex\n");
2105 }
2106 }
2107 if (lp->phycount < 2) {
2108 /*
2109 * 24 Jun 2004 according AMD, in order to change the PHY,
2110 * DANAS (or DISPM for 79C976) must be set; then select the speed,
2111 * duplex, and/or enable auto negotiation, and clear DANAS
2112 */
2113 if (lp->mii && !(lp->options & PCNET32_PORT_ASEL)) {
2114 lp->a->write_bcr(ioaddr, 32,
2115 lp->a->read_bcr(ioaddr, 32) | 0x0080);
2116 /* disable Auto Negotiation, set 10Mpbs, HD */
2117 val = lp->a->read_bcr(ioaddr, 32) & ~0xb8;
2118 if (lp->options & PCNET32_PORT_FD)
2119 val |= 0x10;
2120 if (lp->options & PCNET32_PORT_100)
2121 val |= 0x08;
2122 lp->a->write_bcr(ioaddr, 32, val);
2123 } else {
2124 if (lp->options & PCNET32_PORT_ASEL) {
2125 lp->a->write_bcr(ioaddr, 32,
2126 lp->a->read_bcr(ioaddr,
2127 32) | 0x0080);
2128 /* enable auto negotiate, setup, disable fd */
2129 val = lp->a->read_bcr(ioaddr, 32) & ~0x98;
2130 val |= 0x20;
2131 lp->a->write_bcr(ioaddr, 32, val);
2132 }
2133 }
2134 } else {
2135 int first_phy = -1;
2136 u16 bmcr;
2137 u32 bcr9;
2138 struct ethtool_cmd ecmd = { .cmd = ETHTOOL_GSET };
2139
2140 /*
2141 * There is really no good other way to handle multiple PHYs
2142 * other than turning off all automatics
2143 */
2144 val = lp->a->read_bcr(ioaddr, 2);
2145 lp->a->write_bcr(ioaddr, 2, val & ~2);
2146 val = lp->a->read_bcr(ioaddr, 32);
2147 lp->a->write_bcr(ioaddr, 32, val & ~(1 << 7)); /* stop MII manager */
2148
2149 if (!(lp->options & PCNET32_PORT_ASEL)) {
2150 /* setup ecmd */
2151 ecmd.port = PORT_MII;
2152 ecmd.transceiver = XCVR_INTERNAL;
2153 ecmd.autoneg = AUTONEG_DISABLE;
2154 ethtool_cmd_speed_set(&ecmd,
2155 (lp->options & PCNET32_PORT_100) ?
2156 SPEED_100 : SPEED_10);
2157 bcr9 = lp->a->read_bcr(ioaddr, 9);
2158
2159 if (lp->options & PCNET32_PORT_FD) {
2160 ecmd.duplex = DUPLEX_FULL;
2161 bcr9 |= (1 << 0);
2162 } else {
2163 ecmd.duplex = DUPLEX_HALF;
2164 bcr9 |= ~(1 << 0);
2165 }
2166 lp->a->write_bcr(ioaddr, 9, bcr9);
2167 }
2168
2169 for (i = 0; i < PCNET32_MAX_PHYS; i++) {
2170 if (lp->phymask & (1 << i)) {
2171 /* isolate all but the first PHY */
2172 bmcr = mdio_read(dev, i, MII_BMCR);
2173 if (first_phy == -1) {
2174 first_phy = i;
2175 mdio_write(dev, i, MII_BMCR,
2176 bmcr & ~BMCR_ISOLATE);
2177 } else {
2178 mdio_write(dev, i, MII_BMCR,
2179 bmcr | BMCR_ISOLATE);
2180 }
2181 /* use mii_ethtool_sset to setup PHY */
2182 lp->mii_if.phy_id = i;
2183 ecmd.phy_address = i;
2184 if (lp->options & PCNET32_PORT_ASEL) {
2185 mii_ethtool_gset(&lp->mii_if, &ecmd);
2186 ecmd.autoneg = AUTONEG_ENABLE;
2187 }
2188 mii_ethtool_sset(&lp->mii_if, &ecmd);
2189 }
2190 }
2191 lp->mii_if.phy_id = first_phy;
2192 netif_info(lp, link, dev, "Using PHY number %d\n", first_phy);
2193 }
2194
2195 #ifdef DO_DXSUFLO
2196 if (lp->dxsuflo) { /* Disable transmit stop on underflow */
2197 val = lp->a->read_csr(ioaddr, CSR3);
2198 val |= 0x40;
2199 lp->a->write_csr(ioaddr, CSR3, val);
2200 }
2201 #endif
2202
2203 lp->init_block->mode =
2204 cpu_to_le16((lp->options & PCNET32_PORT_PORTSEL) << 7);
2205 pcnet32_load_multicast(dev);
2206
2207 if (pcnet32_init_ring(dev)) {
2208 rc = -ENOMEM;
2209 goto err_free_ring;
2210 }
2211
2212 napi_enable(&lp->napi);
2213
2214 /* Re-initialize the PCNET32, and start it when done. */
2215 lp->a->write_csr(ioaddr, 1, (lp->init_dma_addr & 0xffff));
2216 lp->a->write_csr(ioaddr, 2, (lp->init_dma_addr >> 16));
2217
2218 lp->a->write_csr(ioaddr, CSR4, 0x0915); /* auto tx pad */
2219 lp->a->write_csr(ioaddr, CSR0, CSR0_INIT);
2220
2221 netif_start_queue(dev);
2222
2223 if (lp->chip_version >= PCNET32_79C970A) {
2224 /* Print the link status and start the watchdog */
2225 pcnet32_check_media(dev, 1);
2226 mod_timer(&lp->watchdog_timer, PCNET32_WATCHDOG_TIMEOUT);
2227 }
2228
2229 i = 0;
2230 while (i++ < 100)
2231 if (lp->a->read_csr(ioaddr, CSR0) & CSR0_IDON)
2232 break;
2233 /*
2234 * We used to clear the InitDone bit, 0x0100, here but Mark Stockton
2235 * reports that doing so triggers a bug in the '974.
2236 */
2237 lp->a->write_csr(ioaddr, CSR0, CSR0_NORMAL);
2238
2239 netif_printk(lp, ifup, KERN_DEBUG, dev,
2240 "pcnet32 open after %d ticks, init block %#x csr0 %4.4x\n",
2241 i,
2242 (u32) (lp->init_dma_addr),
2243 lp->a->read_csr(ioaddr, CSR0));
2244
2245 spin_unlock_irqrestore(&lp->lock, flags);
2246
2247 return 0; /* Always succeed */
2248
2249 err_free_ring:
2250 /* free any allocated skbuffs */
2251 pcnet32_purge_rx_ring(dev);
2252
2253 /*
2254 * Switch back to 16bit mode to avoid problems with dumb
2255 * DOS packet driver after a warm reboot
2256 */
2257 lp->a->write_bcr(ioaddr, 20, 4);
2258
2259 err_free_irq:
2260 spin_unlock_irqrestore(&lp->lock, flags);
2261 free_irq(dev->irq, dev);
2262 return rc;
2263 }
2264
2265 /*
2266 * The LANCE has been halted for one reason or another (busmaster memory
2267 * arbitration error, Tx FIFO underflow, driver stopped it to reconfigure,
2268 * etc.). Modern LANCE variants always reload their ring-buffer
2269 * configuration when restarted, so we must reinitialize our ring
2270 * context before restarting. As part of this reinitialization,
2271 * find all packets still on the Tx ring and pretend that they had been
2272 * sent (in effect, drop the packets on the floor) - the higher-level
2273 * protocols will time out and retransmit. It'd be better to shuffle
2274 * these skbs to a temp list and then actually re-Tx them after
2275 * restarting the chip, but I'm too lazy to do so right now. dplatt@3do.com
2276 */
2277
2278 static void pcnet32_purge_tx_ring(struct net_device *dev)
2279 {
2280 struct pcnet32_private *lp = netdev_priv(dev);
2281 int i;
2282
2283 for (i = 0; i < lp->tx_ring_size; i++) {
2284 lp->tx_ring[i].status = 0; /* CPU owns buffer */
2285 wmb(); /* Make sure adapter sees owner change */
2286 if (lp->tx_skbuff[i]) {
2287 if (!pci_dma_mapping_error(lp->pci_dev,
2288 lp->tx_dma_addr[i]))
2289 pci_unmap_single(lp->pci_dev,
2290 lp->tx_dma_addr[i],
2291 lp->tx_skbuff[i]->len,
2292 PCI_DMA_TODEVICE);
2293 dev_kfree_skb_any(lp->tx_skbuff[i]);
2294 }
2295 lp->tx_skbuff[i] = NULL;
2296 lp->tx_dma_addr[i] = 0;
2297 }
2298 }
2299
2300 /* Initialize the PCNET32 Rx and Tx rings. */
2301 static int pcnet32_init_ring(struct net_device *dev)
2302 {
2303 struct pcnet32_private *lp = netdev_priv(dev);
2304 int i;
2305
2306 lp->tx_full = 0;
2307 lp->cur_rx = lp->cur_tx = 0;
2308 lp->dirty_rx = lp->dirty_tx = 0;
2309
2310 for (i = 0; i < lp->rx_ring_size; i++) {
2311 struct sk_buff *rx_skbuff = lp->rx_skbuff[i];
2312 if (rx_skbuff == NULL) {
2313 lp->rx_skbuff[i] = netdev_alloc_skb(dev, PKT_BUF_SKB);
2314 rx_skbuff = lp->rx_skbuff[i];
2315 if (!rx_skbuff) {
2316 /* there is not much we can do at this point */
2317 netif_err(lp, drv, dev, "%s netdev_alloc_skb failed\n",
2318 __func__);
2319 return -1;
2320 }
2321 skb_reserve(rx_skbuff, NET_IP_ALIGN);
2322 }
2323
2324 rmb();
2325 if (lp->rx_dma_addr[i] == 0) {
2326 lp->rx_dma_addr[i] =
2327 pci_map_single(lp->pci_dev, rx_skbuff->data,
2328 PKT_BUF_SIZE, PCI_DMA_FROMDEVICE);
2329 if (pci_dma_mapping_error(lp->pci_dev,
2330 lp->rx_dma_addr[i])) {
2331 /* there is not much we can do at this point */
2332 netif_err(lp, drv, dev,
2333 "%s pci dma mapping error\n",
2334 __func__);
2335 return -1;
2336 }
2337 }
2338 lp->rx_ring[i].base = cpu_to_le32(lp->rx_dma_addr[i]);
2339 lp->rx_ring[i].buf_length = cpu_to_le16(NEG_BUF_SIZE);
2340 wmb(); /* Make sure owner changes after all others are visible */
2341 lp->rx_ring[i].status = cpu_to_le16(0x8000);
2342 }
2343 /* The Tx buffer address is filled in as needed, but we do need to clear
2344 * the upper ownership bit. */
2345 for (i = 0; i < lp->tx_ring_size; i++) {
2346 lp->tx_ring[i].status = 0; /* CPU owns buffer */
2347 wmb(); /* Make sure adapter sees owner change */
2348 lp->tx_ring[i].base = 0;
2349 lp->tx_dma_addr[i] = 0;
2350 }
2351
2352 lp->init_block->tlen_rlen =
2353 cpu_to_le16(lp->tx_len_bits | lp->rx_len_bits);
2354 for (i = 0; i < 6; i++)
2355 lp->init_block->phys_addr[i] = dev->dev_addr[i];
2356 lp->init_block->rx_ring = cpu_to_le32(lp->rx_ring_dma_addr);
2357 lp->init_block->tx_ring = cpu_to_le32(lp->tx_ring_dma_addr);
2358 wmb(); /* Make sure all changes are visible */
2359 return 0;
2360 }
2361
2362 /* the pcnet32 has been issued a stop or reset. Wait for the stop bit
2363 * then flush the pending transmit operations, re-initialize the ring,
2364 * and tell the chip to initialize.
2365 */
2366 static void pcnet32_restart(struct net_device *dev, unsigned int csr0_bits)
2367 {
2368 struct pcnet32_private *lp = netdev_priv(dev);
2369 unsigned long ioaddr = dev->base_addr;
2370 int i;
2371
2372 /* wait for stop */
2373 for (i = 0; i < 100; i++)
2374 if (lp->a->read_csr(ioaddr, CSR0) & CSR0_STOP)
2375 break;
2376
2377 if (i >= 100)
2378 netif_err(lp, drv, dev, "%s timed out waiting for stop\n",
2379 __func__);
2380
2381 pcnet32_purge_tx_ring(dev);
2382 if (pcnet32_init_ring(dev))
2383 return;
2384
2385 /* ReInit Ring */
2386 lp->a->write_csr(ioaddr, CSR0, CSR0_INIT);
2387 i = 0;
2388 while (i++ < 1000)
2389 if (lp->a->read_csr(ioaddr, CSR0) & CSR0_IDON)
2390 break;
2391
2392 lp->a->write_csr(ioaddr, CSR0, csr0_bits);
2393 }
2394
2395 static void pcnet32_tx_timeout(struct net_device *dev)
2396 {
2397 struct pcnet32_private *lp = netdev_priv(dev);
2398 unsigned long ioaddr = dev->base_addr, flags;
2399
2400 spin_lock_irqsave(&lp->lock, flags);
2401 /* Transmitter timeout, serious problems. */
2402 if (pcnet32_debug & NETIF_MSG_DRV)
2403 pr_err("%s: transmit timed out, status %4.4x, resetting\n",
2404 dev->name, lp->a->read_csr(ioaddr, CSR0));
2405 lp->a->write_csr(ioaddr, CSR0, CSR0_STOP);
2406 dev->stats.tx_errors++;
2407 if (netif_msg_tx_err(lp)) {
2408 int i;
2409 printk(KERN_DEBUG
2410 " Ring data dump: dirty_tx %d cur_tx %d%s cur_rx %d.",
2411 lp->dirty_tx, lp->cur_tx, lp->tx_full ? " (full)" : "",
2412 lp->cur_rx);
2413 for (i = 0; i < lp->rx_ring_size; i++)
2414 printk("%s %08x %04x %08x %04x", i & 1 ? "" : "\n ",
2415 le32_to_cpu(lp->rx_ring[i].base),
2416 (-le16_to_cpu(lp->rx_ring[i].buf_length)) &
2417 0xffff, le32_to_cpu(lp->rx_ring[i].msg_length),
2418 le16_to_cpu(lp->rx_ring[i].status));
2419 for (i = 0; i < lp->tx_ring_size; i++)
2420 printk("%s %08x %04x %08x %04x", i & 1 ? "" : "\n ",
2421 le32_to_cpu(lp->tx_ring[i].base),
2422 (-le16_to_cpu(lp->tx_ring[i].length)) & 0xffff,
2423 le32_to_cpu(lp->tx_ring[i].misc),
2424 le16_to_cpu(lp->tx_ring[i].status));
2425 printk("\n");
2426 }
2427 pcnet32_restart(dev, CSR0_NORMAL);
2428
2429 netif_trans_update(dev); /* prevent tx timeout */
2430 netif_wake_queue(dev);
2431
2432 spin_unlock_irqrestore(&lp->lock, flags);
2433 }
2434
2435 static netdev_tx_t pcnet32_start_xmit(struct sk_buff *skb,
2436 struct net_device *dev)
2437 {
2438 struct pcnet32_private *lp = netdev_priv(dev);
2439 unsigned long ioaddr = dev->base_addr;
2440 u16 status;
2441 int entry;
2442 unsigned long flags;
2443
2444 spin_lock_irqsave(&lp->lock, flags);
2445
2446 netif_printk(lp, tx_queued, KERN_DEBUG, dev,
2447 "%s() called, csr0 %4.4x\n",
2448 __func__, lp->a->read_csr(ioaddr, CSR0));
2449
2450 /* Default status -- will not enable Successful-TxDone
2451 * interrupt when that option is available to us.
2452 */
2453 status = 0x8300;
2454
2455 /* Fill in a Tx ring entry */
2456
2457 /* Mask to ring buffer boundary. */
2458 entry = lp->cur_tx & lp->tx_mod_mask;
2459
2460 /* Caution: the write order is important here, set the status
2461 * with the "ownership" bits last. */
2462
2463 lp->tx_ring[entry].length = cpu_to_le16(-skb->len);
2464
2465 lp->tx_ring[entry].misc = 0x00000000;
2466
2467 lp->tx_dma_addr[entry] =
2468 pci_map_single(lp->pci_dev, skb->data, skb->len, PCI_DMA_TODEVICE);
2469 if (pci_dma_mapping_error(lp->pci_dev, lp->tx_dma_addr[entry])) {
2470 dev_kfree_skb_any(skb);
2471 dev->stats.tx_dropped++;
2472 goto drop_packet;
2473 }
2474 lp->tx_skbuff[entry] = skb;
2475 lp->tx_ring[entry].base = cpu_to_le32(lp->tx_dma_addr[entry]);
2476 wmb(); /* Make sure owner changes after all others are visible */
2477 lp->tx_ring[entry].status = cpu_to_le16(status);
2478
2479 lp->cur_tx++;
2480 dev->stats.tx_bytes += skb->len;
2481
2482 /* Trigger an immediate send poll. */
2483 lp->a->write_csr(ioaddr, CSR0, CSR0_INTEN | CSR0_TXPOLL);
2484
2485 if (lp->tx_ring[(entry + 1) & lp->tx_mod_mask].base != 0) {
2486 lp->tx_full = 1;
2487 netif_stop_queue(dev);
2488 }
2489 drop_packet:
2490 spin_unlock_irqrestore(&lp->lock, flags);
2491 return NETDEV_TX_OK;
2492 }
2493
2494 /* The PCNET32 interrupt handler. */
2495 static irqreturn_t
2496 pcnet32_interrupt(int irq, void *dev_id)
2497 {
2498 struct net_device *dev = dev_id;
2499 struct pcnet32_private *lp;
2500 unsigned long ioaddr;
2501 u16 csr0;
2502 int boguscnt = max_interrupt_work;
2503
2504 ioaddr = dev->base_addr;
2505 lp = netdev_priv(dev);
2506
2507 spin_lock(&lp->lock);
2508
2509 csr0 = lp->a->read_csr(ioaddr, CSR0);
2510 while ((csr0 & 0x8f00) && --boguscnt >= 0) {
2511 if (csr0 == 0xffff)
2512 break; /* PCMCIA remove happened */
2513 /* Acknowledge all of the current interrupt sources ASAP. */
2514 lp->a->write_csr(ioaddr, CSR0, csr0 & ~0x004f);
2515
2516 netif_printk(lp, intr, KERN_DEBUG, dev,
2517 "interrupt csr0=%#2.2x new csr=%#2.2x\n",
2518 csr0, lp->a->read_csr(ioaddr, CSR0));
2519
2520 /* Log misc errors. */
2521 if (csr0 & 0x4000)
2522 dev->stats.tx_errors++; /* Tx babble. */
2523 if (csr0 & 0x1000) {
2524 /*
2525 * This happens when our receive ring is full. This
2526 * shouldn't be a problem as we will see normal rx
2527 * interrupts for the frames in the receive ring. But
2528 * there are some PCI chipsets (I can reproduce this
2529 * on SP3G with Intel saturn chipset) which have
2530 * sometimes problems and will fill up the receive
2531 * ring with error descriptors. In this situation we
2532 * don't get a rx interrupt, but a missed frame
2533 * interrupt sooner or later.
2534 */
2535 dev->stats.rx_errors++; /* Missed a Rx frame. */
2536 }
2537 if (csr0 & 0x0800) {
2538 netif_err(lp, drv, dev, "Bus master arbitration failure, status %4.4x\n",
2539 csr0);
2540 /* unlike for the lance, there is no restart needed */
2541 }
2542 if (napi_schedule_prep(&lp->napi)) {
2543 u16 val;
2544 /* set interrupt masks */
2545 val = lp->a->read_csr(ioaddr, CSR3);
2546 val |= 0x5f00;
2547 lp->a->write_csr(ioaddr, CSR3, val);
2548
2549 __napi_schedule(&lp->napi);
2550 break;
2551 }
2552 csr0 = lp->a->read_csr(ioaddr, CSR0);
2553 }
2554
2555 netif_printk(lp, intr, KERN_DEBUG, dev,
2556 "exiting interrupt, csr0=%#4.4x\n",
2557 lp->a->read_csr(ioaddr, CSR0));
2558
2559 spin_unlock(&lp->lock);
2560
2561 return IRQ_HANDLED;
2562 }
2563
2564 static int pcnet32_close(struct net_device *dev)
2565 {
2566 unsigned long ioaddr = dev->base_addr;
2567 struct pcnet32_private *lp = netdev_priv(dev);
2568 unsigned long flags;
2569
2570 del_timer_sync(&lp->watchdog_timer);
2571
2572 netif_stop_queue(dev);
2573 napi_disable(&lp->napi);
2574
2575 spin_lock_irqsave(&lp->lock, flags);
2576
2577 dev->stats.rx_missed_errors = lp->a->read_csr(ioaddr, 112);
2578
2579 netif_printk(lp, ifdown, KERN_DEBUG, dev,
2580 "Shutting down ethercard, status was %2.2x\n",
2581 lp->a->read_csr(ioaddr, CSR0));
2582
2583 /* We stop the PCNET32 here -- it occasionally polls memory if we don't. */
2584 lp->a->write_csr(ioaddr, CSR0, CSR0_STOP);
2585
2586 /*
2587 * Switch back to 16bit mode to avoid problems with dumb
2588 * DOS packet driver after a warm reboot
2589 */
2590 lp->a->write_bcr(ioaddr, 20, 4);
2591
2592 spin_unlock_irqrestore(&lp->lock, flags);
2593
2594 free_irq(dev->irq, dev);
2595
2596 spin_lock_irqsave(&lp->lock, flags);
2597
2598 pcnet32_purge_rx_ring(dev);
2599 pcnet32_purge_tx_ring(dev);
2600
2601 spin_unlock_irqrestore(&lp->lock, flags);
2602
2603 return 0;
2604 }
2605
2606 static struct net_device_stats *pcnet32_get_stats(struct net_device *dev)
2607 {
2608 struct pcnet32_private *lp = netdev_priv(dev);
2609 unsigned long ioaddr = dev->base_addr;
2610 unsigned long flags;
2611
2612 spin_lock_irqsave(&lp->lock, flags);
2613 dev->stats.rx_missed_errors = lp->a->read_csr(ioaddr, 112);
2614 spin_unlock_irqrestore(&lp->lock, flags);
2615
2616 return &dev->stats;
2617 }
2618
2619 /* taken from the sunlance driver, which it took from the depca driver */
2620 static void pcnet32_load_multicast(struct net_device *dev)
2621 {
2622 struct pcnet32_private *lp = netdev_priv(dev);
2623 volatile struct pcnet32_init_block *ib = lp->init_block;
2624 volatile __le16 *mcast_table = (__le16 *)ib->filter;
2625 struct netdev_hw_addr *ha;
2626 unsigned long ioaddr = dev->base_addr;
2627 int i;
2628 u32 crc;
2629
2630 /* set all multicast bits */
2631 if (dev->flags & IFF_ALLMULTI) {
2632 ib->filter[0] = cpu_to_le32(~0U);
2633 ib->filter[1] = cpu_to_le32(~0U);
2634 lp->a->write_csr(ioaddr, PCNET32_MC_FILTER, 0xffff);
2635 lp->a->write_csr(ioaddr, PCNET32_MC_FILTER+1, 0xffff);
2636 lp->a->write_csr(ioaddr, PCNET32_MC_FILTER+2, 0xffff);
2637 lp->a->write_csr(ioaddr, PCNET32_MC_FILTER+3, 0xffff);
2638 return;
2639 }
2640 /* clear the multicast filter */
2641 ib->filter[0] = 0;
2642 ib->filter[1] = 0;
2643
2644 /* Add addresses */
2645 netdev_for_each_mc_addr(ha, dev) {
2646 crc = ether_crc_le(6, ha->addr);
2647 crc = crc >> 26;
2648 mcast_table[crc >> 4] |= cpu_to_le16(1 << (crc & 0xf));
2649 }
2650 for (i = 0; i < 4; i++)
2651 lp->a->write_csr(ioaddr, PCNET32_MC_FILTER + i,
2652 le16_to_cpu(mcast_table[i]));
2653 }
2654
2655 /*
2656 * Set or clear the multicast filter for this adaptor.
2657 */
2658 static void pcnet32_set_multicast_list(struct net_device *dev)
2659 {
2660 unsigned long ioaddr = dev->base_addr, flags;
2661 struct pcnet32_private *lp = netdev_priv(dev);
2662 int csr15, suspended;
2663
2664 spin_lock_irqsave(&lp->lock, flags);
2665 suspended = pcnet32_suspend(dev, &flags, 0);
2666 csr15 = lp->a->read_csr(ioaddr, CSR15);
2667 if (dev->flags & IFF_PROMISC) {
2668 /* Log any net taps. */
2669 netif_info(lp, hw, dev, "Promiscuous mode enabled\n");
2670 lp->init_block->mode =
2671 cpu_to_le16(0x8000 | (lp->options & PCNET32_PORT_PORTSEL) <<
2672 7);
2673 lp->a->write_csr(ioaddr, CSR15, csr15 | 0x8000);
2674 } else {
2675 lp->init_block->mode =
2676 cpu_to_le16((lp->options & PCNET32_PORT_PORTSEL) << 7);
2677 lp->a->write_csr(ioaddr, CSR15, csr15 & 0x7fff);
2678 pcnet32_load_multicast(dev);
2679 }
2680
2681 if (suspended) {
2682 int csr5;
2683 /* clear SUSPEND (SPND) - CSR5 bit 0 */
2684 csr5 = lp->a->read_csr(ioaddr, CSR5);
2685 lp->a->write_csr(ioaddr, CSR5, csr5 & (~CSR5_SUSPEND));
2686 } else {
2687 lp->a->write_csr(ioaddr, CSR0, CSR0_STOP);
2688 pcnet32_restart(dev, CSR0_NORMAL);
2689 netif_wake_queue(dev);
2690 }
2691
2692 spin_unlock_irqrestore(&lp->lock, flags);
2693 }
2694
2695 /* This routine assumes that the lp->lock is held */
2696 static int mdio_read(struct net_device *dev, int phy_id, int reg_num)
2697 {
2698 struct pcnet32_private *lp = netdev_priv(dev);
2699 unsigned long ioaddr = dev->base_addr;
2700 u16 val_out;
2701
2702 if (!lp->mii)
2703 return 0;
2704
2705 lp->a->write_bcr(ioaddr, 33, ((phy_id & 0x1f) << 5) | (reg_num & 0x1f));
2706 val_out = lp->a->read_bcr(ioaddr, 34);
2707
2708 return val_out;
2709 }
2710
2711 /* This routine assumes that the lp->lock is held */
2712 static void mdio_write(struct net_device *dev, int phy_id, int reg_num, int val)
2713 {
2714 struct pcnet32_private *lp = netdev_priv(dev);
2715 unsigned long ioaddr = dev->base_addr;
2716
2717 if (!lp->mii)
2718 return;
2719
2720 lp->a->write_bcr(ioaddr, 33, ((phy_id & 0x1f) << 5) | (reg_num & 0x1f));
2721 lp->a->write_bcr(ioaddr, 34, val);
2722 }
2723
2724 static int pcnet32_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2725 {
2726 struct pcnet32_private *lp = netdev_priv(dev);
2727 int rc;
2728 unsigned long flags;
2729
2730 /* SIOC[GS]MIIxxx ioctls */
2731 if (lp->mii) {
2732 spin_lock_irqsave(&lp->lock, flags);
2733 rc = generic_mii_ioctl(&lp->mii_if, if_mii(rq), cmd, NULL);
2734 spin_unlock_irqrestore(&lp->lock, flags);
2735 } else {
2736 rc = -EOPNOTSUPP;
2737 }
2738
2739 return rc;
2740 }
2741
2742 static int pcnet32_check_otherphy(struct net_device *dev)
2743 {
2744 struct pcnet32_private *lp = netdev_priv(dev);
2745 struct mii_if_info mii = lp->mii_if;
2746 u16 bmcr;
2747 int i;
2748
2749 for (i = 0; i < PCNET32_MAX_PHYS; i++) {
2750 if (i == lp->mii_if.phy_id)
2751 continue; /* skip active phy */
2752 if (lp->phymask & (1 << i)) {
2753 mii.phy_id = i;
2754 if (mii_link_ok(&mii)) {
2755 /* found PHY with active link */
2756 netif_info(lp, link, dev, "Using PHY number %d\n",
2757 i);
2758
2759 /* isolate inactive phy */
2760 bmcr =
2761 mdio_read(dev, lp->mii_if.phy_id, MII_BMCR);
2762 mdio_write(dev, lp->mii_if.phy_id, MII_BMCR,
2763 bmcr | BMCR_ISOLATE);
2764
2765 /* de-isolate new phy */
2766 bmcr = mdio_read(dev, i, MII_BMCR);
2767 mdio_write(dev, i, MII_BMCR,
2768 bmcr & ~BMCR_ISOLATE);
2769
2770 /* set new phy address */
2771 lp->mii_if.phy_id = i;
2772 return 1;
2773 }
2774 }
2775 }
2776 return 0;
2777 }
2778
2779 /*
2780 * Show the status of the media. Similar to mii_check_media however it
2781 * correctly shows the link speed for all (tested) pcnet32 variants.
2782 * Devices with no mii just report link state without speed.
2783 *
2784 * Caller is assumed to hold and release the lp->lock.
2785 */
2786
2787 static void pcnet32_check_media(struct net_device *dev, int verbose)
2788 {
2789 struct pcnet32_private *lp = netdev_priv(dev);
2790 int curr_link;
2791 int prev_link = netif_carrier_ok(dev) ? 1 : 0;
2792 u32 bcr9;
2793
2794 if (lp->mii) {
2795 curr_link = mii_link_ok(&lp->mii_if);
2796 } else {
2797 ulong ioaddr = dev->base_addr; /* card base I/O address */
2798 curr_link = (lp->a->read_bcr(ioaddr, 4) != 0xc0);
2799 }
2800 if (!curr_link) {
2801 if (prev_link || verbose) {
2802 netif_carrier_off(dev);
2803 netif_info(lp, link, dev, "link down\n");
2804 }
2805 if (lp->phycount > 1) {
2806 curr_link = pcnet32_check_otherphy(dev);
2807 prev_link = 0;
2808 }
2809 } else if (verbose || !prev_link) {
2810 netif_carrier_on(dev);
2811 if (lp->mii) {
2812 if (netif_msg_link(lp)) {
2813 struct ethtool_cmd ecmd = {
2814 .cmd = ETHTOOL_GSET };
2815 mii_ethtool_gset(&lp->mii_if, &ecmd);
2816 netdev_info(dev, "link up, %uMbps, %s-duplex\n",
2817 ethtool_cmd_speed(&ecmd),
2818 (ecmd.duplex == DUPLEX_FULL)
2819 ? "full" : "half");
2820 }
2821 bcr9 = lp->a->read_bcr(dev->base_addr, 9);
2822 if ((bcr9 & (1 << 0)) != lp->mii_if.full_duplex) {
2823 if (lp->mii_if.full_duplex)
2824 bcr9 |= (1 << 0);
2825 else
2826 bcr9 &= ~(1 << 0);
2827 lp->a->write_bcr(dev->base_addr, 9, bcr9);
2828 }
2829 } else {
2830 netif_info(lp, link, dev, "link up\n");
2831 }
2832 }
2833 }
2834
2835 /*
2836 * Check for loss of link and link establishment.
2837 * Could possibly be changed to use mii_check_media instead.
2838 */
2839
2840 static void pcnet32_watchdog(struct net_device *dev)
2841 {
2842 struct pcnet32_private *lp = netdev_priv(dev);
2843 unsigned long flags;
2844
2845 /* Print the link status if it has changed */
2846 spin_lock_irqsave(&lp->lock, flags);
2847 pcnet32_check_media(dev, 0);
2848 spin_unlock_irqrestore(&lp->lock, flags);
2849
2850 mod_timer(&lp->watchdog_timer, round_jiffies(PCNET32_WATCHDOG_TIMEOUT));
2851 }
2852
2853 static int pcnet32_pm_suspend(struct pci_dev *pdev, pm_message_t state)
2854 {
2855 struct net_device *dev = pci_get_drvdata(pdev);
2856
2857 if (netif_running(dev)) {
2858 netif_device_detach(dev);
2859 pcnet32_close(dev);
2860 }
2861 pci_save_state(pdev);
2862 pci_set_power_state(pdev, pci_choose_state(pdev, state));
2863 return 0;
2864 }
2865
2866 static int pcnet32_pm_resume(struct pci_dev *pdev)
2867 {
2868 struct net_device *dev = pci_get_drvdata(pdev);
2869
2870 pci_set_power_state(pdev, PCI_D0);
2871 pci_restore_state(pdev);
2872
2873 if (netif_running(dev)) {
2874 pcnet32_open(dev);
2875 netif_device_attach(dev);
2876 }
2877 return 0;
2878 }
2879
2880 static void pcnet32_remove_one(struct pci_dev *pdev)
2881 {
2882 struct net_device *dev = pci_get_drvdata(pdev);
2883
2884 if (dev) {
2885 struct pcnet32_private *lp = netdev_priv(dev);
2886
2887 unregister_netdev(dev);
2888 pcnet32_free_ring(dev);
2889 release_region(dev->base_addr, PCNET32_TOTAL_SIZE);
2890 pci_free_consistent(lp->pci_dev, sizeof(*lp->init_block),
2891 lp->init_block, lp->init_dma_addr);
2892 free_netdev(dev);
2893 pci_disable_device(pdev);
2894 }
2895 }
2896
2897 static struct pci_driver pcnet32_driver = {
2898 .name = DRV_NAME,
2899 .probe = pcnet32_probe_pci,
2900 .remove = pcnet32_remove_one,
2901 .id_table = pcnet32_pci_tbl,
2902 .suspend = pcnet32_pm_suspend,
2903 .resume = pcnet32_pm_resume,
2904 };
2905
2906 /* An additional parameter that may be passed in... */
2907 static int debug = -1;
2908 static int tx_start_pt = -1;
2909 static int pcnet32_have_pci;
2910
2911 module_param(debug, int, 0);
2912 MODULE_PARM_DESC(debug, DRV_NAME " debug level");
2913 module_param(max_interrupt_work, int, 0);
2914 MODULE_PARM_DESC(max_interrupt_work,
2915 DRV_NAME " maximum events handled per interrupt");
2916 module_param(rx_copybreak, int, 0);
2917 MODULE_PARM_DESC(rx_copybreak,
2918 DRV_NAME " copy breakpoint for copy-only-tiny-frames");
2919 module_param(tx_start_pt, int, 0);
2920 MODULE_PARM_DESC(tx_start_pt, DRV_NAME " transmit start point (0-3)");
2921 module_param(pcnet32vlb, int, 0);
2922 MODULE_PARM_DESC(pcnet32vlb, DRV_NAME " Vesa local bus (VLB) support (0/1)");
2923 module_param_array(options, int, NULL, 0);
2924 MODULE_PARM_DESC(options, DRV_NAME " initial option setting(s) (0-15)");
2925 module_param_array(full_duplex, int, NULL, 0);
2926 MODULE_PARM_DESC(full_duplex, DRV_NAME " full duplex setting(s) (1)");
2927 /* Module Parameter for HomePNA cards added by Patrick Simmons, 2004 */
2928 module_param_array(homepna, int, NULL, 0);
2929 MODULE_PARM_DESC(homepna,
2930 DRV_NAME
2931 " mode for 79C978 cards (1 for HomePNA, 0 for Ethernet, default Ethernet");
2932
2933 MODULE_AUTHOR("Thomas Bogendoerfer");
2934 MODULE_DESCRIPTION("Driver for PCnet32 and PCnetPCI based ethercards");
2935 MODULE_LICENSE("GPL");
2936
2937 #define PCNET32_MSG_DEFAULT (NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK)
2938
2939 static int __init pcnet32_init_module(void)
2940 {
2941 pr_info("%s", version);
2942
2943 pcnet32_debug = netif_msg_init(debug, PCNET32_MSG_DEFAULT);
2944
2945 if ((tx_start_pt >= 0) && (tx_start_pt <= 3))
2946 tx_start = tx_start_pt;
2947
2948 /* find the PCI devices */
2949 if (!pci_register_driver(&pcnet32_driver))
2950 pcnet32_have_pci = 1;
2951
2952 /* should we find any remaining VLbus devices ? */
2953 if (pcnet32vlb)
2954 pcnet32_probe_vlbus(pcnet32_portlist);
2955
2956 if (cards_found && (pcnet32_debug & NETIF_MSG_PROBE))
2957 pr_info("%d cards_found\n", cards_found);
2958
2959 return (pcnet32_have_pci + cards_found) ? 0 : -ENODEV;
2960 }
2961
2962 static void __exit pcnet32_cleanup_module(void)
2963 {
2964 struct net_device *next_dev;
2965
2966 while (pcnet32_dev) {
2967 struct pcnet32_private *lp = netdev_priv(pcnet32_dev);
2968 next_dev = lp->next;
2969 unregister_netdev(pcnet32_dev);
2970 pcnet32_free_ring(pcnet32_dev);
2971 release_region(pcnet32_dev->base_addr, PCNET32_TOTAL_SIZE);
2972 pci_free_consistent(lp->pci_dev, sizeof(*lp->init_block),
2973 lp->init_block, lp->init_dma_addr);
2974 free_netdev(pcnet32_dev);
2975 pcnet32_dev = next_dev;
2976 }
2977
2978 if (pcnet32_have_pci)
2979 pci_unregister_driver(&pcnet32_driver);
2980 }
2981
2982 module_init(pcnet32_init_module);
2983 module_exit(pcnet32_cleanup_module);
2984
2985 /*
2986 * Local variables:
2987 * c-indent-level: 4
2988 * tab-width: 8
2989 * End:
2990 */
Linux with added FPC-III support