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[deliverable/linux.git] / drivers / net / pcnet32.c
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 DRV_NAME "pcnet32"
25 #define DRV_VERSION "1.35"
26 #define DRV_RELDATE "21.Apr.2008"
27 #define PFX DRV_NAME ": "
28
29 static const char *const version =
30 DRV_NAME ".c:v" DRV_VERSION " " DRV_RELDATE " tsbogend@alpha.franken.de\n";
31
32 #include <linux/module.h>
33 #include <linux/kernel.h>
34 #include <linux/string.h>
35 #include <linux/errno.h>
36 #include <linux/ioport.h>
37 #include <linux/slab.h>
38 #include <linux/interrupt.h>
39 #include <linux/pci.h>
40 #include <linux/delay.h>
41 #include <linux/init.h>
42 #include <linux/ethtool.h>
43 #include <linux/mii.h>
44 #include <linux/crc32.h>
45 #include <linux/netdevice.h>
46 #include <linux/etherdevice.h>
47 #include <linux/skbuff.h>
48 #include <linux/spinlock.h>
49 #include <linux/moduleparam.h>
50 #include <linux/bitops.h>
51
52 #include <asm/dma.h>
53 #include <asm/io.h>
54 #include <asm/uaccess.h>
55 #include <asm/irq.h>
56
57 /*
58 * PCI device identifiers for "new style" Linux PCI Device Drivers
59 */
60 static struct pci_device_id pcnet32_pci_tbl[] = {
61 { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_LANCE_HOME), },
62 { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_LANCE), },
63
64 /*
65 * Adapters that were sold with IBM's RS/6000 or pSeries hardware have
66 * the incorrect vendor id.
67 */
68 { PCI_DEVICE(PCI_VENDOR_ID_TRIDENT, PCI_DEVICE_ID_AMD_LANCE),
69 .class = (PCI_CLASS_NETWORK_ETHERNET << 8), .class_mask = 0xffff00, },
70
71 { } /* terminate list */
72 };
73
74 MODULE_DEVICE_TABLE(pci, pcnet32_pci_tbl);
75
76 static int cards_found;
77
78 /*
79 * VLB I/O addresses
80 */
81 static unsigned int pcnet32_portlist[] __initdata =
82 { 0x300, 0x320, 0x340, 0x360, 0 };
83
84 static int pcnet32_debug = 0;
85 static int tx_start = 1; /* Mapping -- 0:20, 1:64, 2:128, 3:~220 (depends on chip vers) */
86 static int pcnet32vlb; /* check for VLB cards ? */
87
88 static struct net_device *pcnet32_dev;
89
90 static int max_interrupt_work = 2;
91 static int rx_copybreak = 200;
92
93 #define PCNET32_PORT_AUI 0x00
94 #define PCNET32_PORT_10BT 0x01
95 #define PCNET32_PORT_GPSI 0x02
96 #define PCNET32_PORT_MII 0x03
97
98 #define PCNET32_PORT_PORTSEL 0x03
99 #define PCNET32_PORT_ASEL 0x04
100 #define PCNET32_PORT_100 0x40
101 #define PCNET32_PORT_FD 0x80
102
103 #define PCNET32_DMA_MASK 0xffffffff
104
105 #define PCNET32_WATCHDOG_TIMEOUT (jiffies + (2 * HZ))
106 #define PCNET32_BLINK_TIMEOUT (jiffies + (HZ/4))
107
108 /*
109 * table to translate option values from tulip
110 * to internal options
111 */
112 static const unsigned char options_mapping[] = {
113 PCNET32_PORT_ASEL, /* 0 Auto-select */
114 PCNET32_PORT_AUI, /* 1 BNC/AUI */
115 PCNET32_PORT_AUI, /* 2 AUI/BNC */
116 PCNET32_PORT_ASEL, /* 3 not supported */
117 PCNET32_PORT_10BT | PCNET32_PORT_FD, /* 4 10baseT-FD */
118 PCNET32_PORT_ASEL, /* 5 not supported */
119 PCNET32_PORT_ASEL, /* 6 not supported */
120 PCNET32_PORT_ASEL, /* 7 not supported */
121 PCNET32_PORT_ASEL, /* 8 not supported */
122 PCNET32_PORT_MII, /* 9 MII 10baseT */
123 PCNET32_PORT_MII | PCNET32_PORT_FD, /* 10 MII 10baseT-FD */
124 PCNET32_PORT_MII, /* 11 MII (autosel) */
125 PCNET32_PORT_10BT, /* 12 10BaseT */
126 PCNET32_PORT_MII | PCNET32_PORT_100, /* 13 MII 100BaseTx */
127 /* 14 MII 100BaseTx-FD */
128 PCNET32_PORT_MII | PCNET32_PORT_100 | PCNET32_PORT_FD,
129 PCNET32_PORT_ASEL /* 15 not supported */
130 };
131
132 static const char pcnet32_gstrings_test[][ETH_GSTRING_LEN] = {
133 "Loopback test (offline)"
134 };
135
136 #define PCNET32_TEST_LEN ARRAY_SIZE(pcnet32_gstrings_test)
137
138 #define PCNET32_NUM_REGS 136
139
140 #define MAX_UNITS 8 /* More are supported, limit only on options */
141 static int options[MAX_UNITS];
142 static int full_duplex[MAX_UNITS];
143 static int homepna[MAX_UNITS];
144
145 /*
146 * Theory of Operation
147 *
148 * This driver uses the same software structure as the normal lance
149 * driver. So look for a verbose description in lance.c. The differences
150 * to the normal lance driver is the use of the 32bit mode of PCnet32
151 * and PCnetPCI chips. Because these chips are 32bit chips, there is no
152 * 16MB limitation and we don't need bounce buffers.
153 */
154
155 /*
156 * Set the number of Tx and Rx buffers, using Log_2(# buffers).
157 * Reasonable default values are 4 Tx buffers, and 16 Rx buffers.
158 * That translates to 2 (4 == 2^^2) and 4 (16 == 2^^4).
159 */
160 #ifndef PCNET32_LOG_TX_BUFFERS
161 #define PCNET32_LOG_TX_BUFFERS 4
162 #define PCNET32_LOG_RX_BUFFERS 5
163 #define PCNET32_LOG_MAX_TX_BUFFERS 9 /* 2^9 == 512 */
164 #define PCNET32_LOG_MAX_RX_BUFFERS 9
165 #endif
166
167 #define TX_RING_SIZE (1 << (PCNET32_LOG_TX_BUFFERS))
168 #define TX_MAX_RING_SIZE (1 << (PCNET32_LOG_MAX_TX_BUFFERS))
169
170 #define RX_RING_SIZE (1 << (PCNET32_LOG_RX_BUFFERS))
171 #define RX_MAX_RING_SIZE (1 << (PCNET32_LOG_MAX_RX_BUFFERS))
172
173 #define PKT_BUF_SKB 1544
174 /* actual buffer length after being aligned */
175 #define PKT_BUF_SIZE (PKT_BUF_SKB - NET_IP_ALIGN)
176 /* chip wants twos complement of the (aligned) buffer length */
177 #define NEG_BUF_SIZE (NET_IP_ALIGN - PKT_BUF_SKB)
178
179 /* Offsets from base I/O address. */
180 #define PCNET32_WIO_RDP 0x10
181 #define PCNET32_WIO_RAP 0x12
182 #define PCNET32_WIO_RESET 0x14
183 #define PCNET32_WIO_BDP 0x16
184
185 #define PCNET32_DWIO_RDP 0x10
186 #define PCNET32_DWIO_RAP 0x14
187 #define PCNET32_DWIO_RESET 0x18
188 #define PCNET32_DWIO_BDP 0x1C
189
190 #define PCNET32_TOTAL_SIZE 0x20
191
192 #define CSR0 0
193 #define CSR0_INIT 0x1
194 #define CSR0_START 0x2
195 #define CSR0_STOP 0x4
196 #define CSR0_TXPOLL 0x8
197 #define CSR0_INTEN 0x40
198 #define CSR0_IDON 0x0100
199 #define CSR0_NORMAL (CSR0_START | CSR0_INTEN)
200 #define PCNET32_INIT_LOW 1
201 #define PCNET32_INIT_HIGH 2
202 #define CSR3 3
203 #define CSR4 4
204 #define CSR5 5
205 #define CSR5_SUSPEND 0x0001
206 #define CSR15 15
207 #define PCNET32_MC_FILTER 8
208
209 #define PCNET32_79C970A 0x2621
210
211 /* The PCNET32 Rx and Tx ring descriptors. */
212 struct pcnet32_rx_head {
213 __le32 base;
214 __le16 buf_length; /* two`s complement of length */
215 __le16 status;
216 __le32 msg_length;
217 __le32 reserved;
218 };
219
220 struct pcnet32_tx_head {
221 __le32 base;
222 __le16 length; /* two`s complement of length */
223 __le16 status;
224 __le32 misc;
225 __le32 reserved;
226 };
227
228 /* The PCNET32 32-Bit initialization block, described in databook. */
229 struct pcnet32_init_block {
230 __le16 mode;
231 __le16 tlen_rlen;
232 u8 phys_addr[6];
233 __le16 reserved;
234 __le32 filter[2];
235 /* Receive and transmit ring base, along with extra bits. */
236 __le32 rx_ring;
237 __le32 tx_ring;
238 };
239
240 /* PCnet32 access functions */
241 struct pcnet32_access {
242 u16 (*read_csr) (unsigned long, int);
243 void (*write_csr) (unsigned long, int, u16);
244 u16 (*read_bcr) (unsigned long, int);
245 void (*write_bcr) (unsigned long, int, u16);
246 u16 (*read_rap) (unsigned long);
247 void (*write_rap) (unsigned long, u16);
248 void (*reset) (unsigned long);
249 };
250
251 /*
252 * The first field of pcnet32_private is read by the ethernet device
253 * so the structure should be allocated using pci_alloc_consistent().
254 */
255 struct pcnet32_private {
256 struct pcnet32_init_block *init_block;
257 /* The Tx and Rx ring entries must be aligned on 16-byte boundaries in 32bit mode. */
258 struct pcnet32_rx_head *rx_ring;
259 struct pcnet32_tx_head *tx_ring;
260 dma_addr_t init_dma_addr;/* DMA address of beginning of the init block,
261 returned by pci_alloc_consistent */
262 struct pci_dev *pci_dev;
263 const char *name;
264 /* The saved address of a sent-in-place packet/buffer, for skfree(). */
265 struct sk_buff **tx_skbuff;
266 struct sk_buff **rx_skbuff;
267 dma_addr_t *tx_dma_addr;
268 dma_addr_t *rx_dma_addr;
269 struct pcnet32_access a;
270 spinlock_t lock; /* Guard lock */
271 unsigned int cur_rx, cur_tx; /* The next free ring entry */
272 unsigned int rx_ring_size; /* current rx ring size */
273 unsigned int tx_ring_size; /* current tx ring size */
274 unsigned int rx_mod_mask; /* rx ring modular mask */
275 unsigned int tx_mod_mask; /* tx ring modular mask */
276 unsigned short rx_len_bits;
277 unsigned short tx_len_bits;
278 dma_addr_t rx_ring_dma_addr;
279 dma_addr_t tx_ring_dma_addr;
280 unsigned int dirty_rx, /* ring entries to be freed. */
281 dirty_tx;
282
283 struct net_device *dev;
284 struct napi_struct napi;
285 char tx_full;
286 char phycount; /* number of phys found */
287 int options;
288 unsigned int shared_irq:1, /* shared irq possible */
289 dxsuflo:1, /* disable transmit stop on uflo */
290 mii:1; /* mii port available */
291 struct net_device *next;
292 struct mii_if_info mii_if;
293 struct timer_list watchdog_timer;
294 struct timer_list blink_timer;
295 u32 msg_enable; /* debug message level */
296
297 /* each bit indicates an available PHY */
298 u32 phymask;
299 unsigned short chip_version; /* which variant this is */
300 };
301
302 static int pcnet32_probe_pci(struct pci_dev *, const struct pci_device_id *);
303 static int pcnet32_probe1(unsigned long, int, struct pci_dev *);
304 static int pcnet32_open(struct net_device *);
305 static int pcnet32_init_ring(struct net_device *);
306 static int pcnet32_start_xmit(struct sk_buff *, struct net_device *);
307 static void pcnet32_tx_timeout(struct net_device *dev);
308 static irqreturn_t pcnet32_interrupt(int, void *);
309 static int pcnet32_close(struct net_device *);
310 static struct net_device_stats *pcnet32_get_stats(struct net_device *);
311 static void pcnet32_load_multicast(struct net_device *dev);
312 static void pcnet32_set_multicast_list(struct net_device *);
313 static int pcnet32_ioctl(struct net_device *, struct ifreq *, int);
314 static void pcnet32_watchdog(struct net_device *);
315 static int mdio_read(struct net_device *dev, int phy_id, int reg_num);
316 static void mdio_write(struct net_device *dev, int phy_id, int reg_num,
317 int val);
318 static void pcnet32_restart(struct net_device *dev, unsigned int csr0_bits);
319 static void pcnet32_ethtool_test(struct net_device *dev,
320 struct ethtool_test *eth_test, u64 * data);
321 static int pcnet32_loopback_test(struct net_device *dev, uint64_t * data1);
322 static int pcnet32_phys_id(struct net_device *dev, u32 data);
323 static void pcnet32_led_blink_callback(struct net_device *dev);
324 static int pcnet32_get_regs_len(struct net_device *dev);
325 static void pcnet32_get_regs(struct net_device *dev, struct ethtool_regs *regs,
326 void *ptr);
327 static void pcnet32_purge_tx_ring(struct net_device *dev);
328 static int pcnet32_alloc_ring(struct net_device *dev, const char *name);
329 static void pcnet32_free_ring(struct net_device *dev);
330 static void pcnet32_check_media(struct net_device *dev, int verbose);
331
332 static u16 pcnet32_wio_read_csr(unsigned long addr, int index)
333 {
334 outw(index, addr + PCNET32_WIO_RAP);
335 return inw(addr + PCNET32_WIO_RDP);
336 }
337
338 static void pcnet32_wio_write_csr(unsigned long addr, int index, u16 val)
339 {
340 outw(index, addr + PCNET32_WIO_RAP);
341 outw(val, addr + PCNET32_WIO_RDP);
342 }
343
344 static u16 pcnet32_wio_read_bcr(unsigned long addr, int index)
345 {
346 outw(index, addr + PCNET32_WIO_RAP);
347 return inw(addr + PCNET32_WIO_BDP);
348 }
349
350 static void pcnet32_wio_write_bcr(unsigned long addr, int index, u16 val)
351 {
352 outw(index, addr + PCNET32_WIO_RAP);
353 outw(val, addr + PCNET32_WIO_BDP);
354 }
355
356 static u16 pcnet32_wio_read_rap(unsigned long addr)
357 {
358 return inw(addr + PCNET32_WIO_RAP);
359 }
360
361 static void pcnet32_wio_write_rap(unsigned long addr, u16 val)
362 {
363 outw(val, addr + PCNET32_WIO_RAP);
364 }
365
366 static void pcnet32_wio_reset(unsigned long addr)
367 {
368 inw(addr + PCNET32_WIO_RESET);
369 }
370
371 static int pcnet32_wio_check(unsigned long addr)
372 {
373 outw(88, addr + PCNET32_WIO_RAP);
374 return (inw(addr + PCNET32_WIO_RAP) == 88);
375 }
376
377 static struct pcnet32_access pcnet32_wio = {
378 .read_csr = pcnet32_wio_read_csr,
379 .write_csr = pcnet32_wio_write_csr,
380 .read_bcr = pcnet32_wio_read_bcr,
381 .write_bcr = pcnet32_wio_write_bcr,
382 .read_rap = pcnet32_wio_read_rap,
383 .write_rap = pcnet32_wio_write_rap,
384 .reset = pcnet32_wio_reset
385 };
386
387 static u16 pcnet32_dwio_read_csr(unsigned long addr, int index)
388 {
389 outl(index, addr + PCNET32_DWIO_RAP);
390 return (inl(addr + PCNET32_DWIO_RDP) & 0xffff);
391 }
392
393 static void pcnet32_dwio_write_csr(unsigned long addr, int index, u16 val)
394 {
395 outl(index, addr + PCNET32_DWIO_RAP);
396 outl(val, addr + PCNET32_DWIO_RDP);
397 }
398
399 static u16 pcnet32_dwio_read_bcr(unsigned long addr, int index)
400 {
401 outl(index, addr + PCNET32_DWIO_RAP);
402 return (inl(addr + PCNET32_DWIO_BDP) & 0xffff);
403 }
404
405 static void pcnet32_dwio_write_bcr(unsigned long addr, int index, u16 val)
406 {
407 outl(index, addr + PCNET32_DWIO_RAP);
408 outl(val, addr + PCNET32_DWIO_BDP);
409 }
410
411 static u16 pcnet32_dwio_read_rap(unsigned long addr)
412 {
413 return (inl(addr + PCNET32_DWIO_RAP) & 0xffff);
414 }
415
416 static void pcnet32_dwio_write_rap(unsigned long addr, u16 val)
417 {
418 outl(val, addr + PCNET32_DWIO_RAP);
419 }
420
421 static void pcnet32_dwio_reset(unsigned long addr)
422 {
423 inl(addr + PCNET32_DWIO_RESET);
424 }
425
426 static int pcnet32_dwio_check(unsigned long addr)
427 {
428 outl(88, addr + PCNET32_DWIO_RAP);
429 return ((inl(addr + PCNET32_DWIO_RAP) & 0xffff) == 88);
430 }
431
432 static struct pcnet32_access pcnet32_dwio = {
433 .read_csr = pcnet32_dwio_read_csr,
434 .write_csr = pcnet32_dwio_write_csr,
435 .read_bcr = pcnet32_dwio_read_bcr,
436 .write_bcr = pcnet32_dwio_write_bcr,
437 .read_rap = pcnet32_dwio_read_rap,
438 .write_rap = pcnet32_dwio_write_rap,
439 .reset = pcnet32_dwio_reset
440 };
441
442 static void pcnet32_netif_stop(struct net_device *dev)
443 {
444 struct pcnet32_private *lp = netdev_priv(dev);
445
446 dev->trans_start = jiffies;
447 napi_disable(&lp->napi);
448 netif_tx_disable(dev);
449 }
450
451 static void pcnet32_netif_start(struct net_device *dev)
452 {
453 struct pcnet32_private *lp = netdev_priv(dev);
454 ulong ioaddr = dev->base_addr;
455 u16 val;
456
457 netif_wake_queue(dev);
458 val = lp->a.read_csr(ioaddr, CSR3);
459 val &= 0x00ff;
460 lp->a.write_csr(ioaddr, CSR3, val);
461 napi_enable(&lp->napi);
462 }
463
464 /*
465 * Allocate space for the new sized tx ring.
466 * Free old resources
467 * Save new resources.
468 * Any failure keeps old resources.
469 * Must be called with lp->lock held.
470 */
471 static void pcnet32_realloc_tx_ring(struct net_device *dev,
472 struct pcnet32_private *lp,
473 unsigned int size)
474 {
475 dma_addr_t new_ring_dma_addr;
476 dma_addr_t *new_dma_addr_list;
477 struct pcnet32_tx_head *new_tx_ring;
478 struct sk_buff **new_skb_list;
479
480 pcnet32_purge_tx_ring(dev);
481
482 new_tx_ring = pci_alloc_consistent(lp->pci_dev,
483 sizeof(struct pcnet32_tx_head) *
484 (1 << size),
485 &new_ring_dma_addr);
486 if (new_tx_ring == NULL) {
487 if (netif_msg_drv(lp))
488 printk("\n" KERN_ERR
489 "%s: Consistent memory allocation failed.\n",
490 dev->name);
491 return;
492 }
493 memset(new_tx_ring, 0, sizeof(struct pcnet32_tx_head) * (1 << size));
494
495 new_dma_addr_list = kcalloc((1 << size), sizeof(dma_addr_t),
496 GFP_ATOMIC);
497 if (!new_dma_addr_list) {
498 if (netif_msg_drv(lp))
499 printk("\n" KERN_ERR
500 "%s: Memory allocation failed.\n", dev->name);
501 goto free_new_tx_ring;
502 }
503
504 new_skb_list = kcalloc((1 << size), sizeof(struct sk_buff *),
505 GFP_ATOMIC);
506 if (!new_skb_list) {
507 if (netif_msg_drv(lp))
508 printk("\n" KERN_ERR
509 "%s: Memory allocation failed.\n", dev->name);
510 goto free_new_lists;
511 }
512
513 kfree(lp->tx_skbuff);
514 kfree(lp->tx_dma_addr);
515 pci_free_consistent(lp->pci_dev,
516 sizeof(struct pcnet32_tx_head) *
517 lp->tx_ring_size, lp->tx_ring,
518 lp->tx_ring_dma_addr);
519
520 lp->tx_ring_size = (1 << size);
521 lp->tx_mod_mask = lp->tx_ring_size - 1;
522 lp->tx_len_bits = (size << 12);
523 lp->tx_ring = new_tx_ring;
524 lp->tx_ring_dma_addr = new_ring_dma_addr;
525 lp->tx_dma_addr = new_dma_addr_list;
526 lp->tx_skbuff = new_skb_list;
527 return;
528
529 free_new_lists:
530 kfree(new_dma_addr_list);
531 free_new_tx_ring:
532 pci_free_consistent(lp->pci_dev,
533 sizeof(struct pcnet32_tx_head) *
534 (1 << size),
535 new_tx_ring,
536 new_ring_dma_addr);
537 return;
538 }
539
540 /*
541 * Allocate space for the new sized rx ring.
542 * Re-use old receive buffers.
543 * alloc extra buffers
544 * free unneeded buffers
545 * free unneeded buffers
546 * Save new resources.
547 * Any failure keeps old resources.
548 * Must be called with lp->lock held.
549 */
550 static void pcnet32_realloc_rx_ring(struct net_device *dev,
551 struct pcnet32_private *lp,
552 unsigned int size)
553 {
554 dma_addr_t new_ring_dma_addr;
555 dma_addr_t *new_dma_addr_list;
556 struct pcnet32_rx_head *new_rx_ring;
557 struct sk_buff **new_skb_list;
558 int new, overlap;
559
560 new_rx_ring = pci_alloc_consistent(lp->pci_dev,
561 sizeof(struct pcnet32_rx_head) *
562 (1 << size),
563 &new_ring_dma_addr);
564 if (new_rx_ring == NULL) {
565 if (netif_msg_drv(lp))
566 printk("\n" KERN_ERR
567 "%s: Consistent memory allocation failed.\n",
568 dev->name);
569 return;
570 }
571 memset(new_rx_ring, 0, sizeof(struct pcnet32_rx_head) * (1 << size));
572
573 new_dma_addr_list = kcalloc((1 << size), sizeof(dma_addr_t),
574 GFP_ATOMIC);
575 if (!new_dma_addr_list) {
576 if (netif_msg_drv(lp))
577 printk("\n" KERN_ERR
578 "%s: Memory allocation failed.\n", dev->name);
579 goto free_new_rx_ring;
580 }
581
582 new_skb_list = kcalloc((1 << size), sizeof(struct sk_buff *),
583 GFP_ATOMIC);
584 if (!new_skb_list) {
585 if (netif_msg_drv(lp))
586 printk("\n" KERN_ERR
587 "%s: Memory allocation failed.\n", dev->name);
588 goto free_new_lists;
589 }
590
591 /* first copy the current receive buffers */
592 overlap = min(size, lp->rx_ring_size);
593 for (new = 0; new < overlap; new++) {
594 new_rx_ring[new] = lp->rx_ring[new];
595 new_dma_addr_list[new] = lp->rx_dma_addr[new];
596 new_skb_list[new] = lp->rx_skbuff[new];
597 }
598 /* now allocate any new buffers needed */
599 for (; new < size; new++ ) {
600 struct sk_buff *rx_skbuff;
601 new_skb_list[new] = dev_alloc_skb(PKT_BUF_SKB);
602 if (!(rx_skbuff = new_skb_list[new])) {
603 /* keep the original lists and buffers */
604 if (netif_msg_drv(lp))
605 printk(KERN_ERR
606 "%s: pcnet32_realloc_rx_ring dev_alloc_skb failed.\n",
607 dev->name);
608 goto free_all_new;
609 }
610 skb_reserve(rx_skbuff, NET_IP_ALIGN);
611
612 new_dma_addr_list[new] =
613 pci_map_single(lp->pci_dev, rx_skbuff->data,
614 PKT_BUF_SIZE, PCI_DMA_FROMDEVICE);
615 new_rx_ring[new].base = cpu_to_le32(new_dma_addr_list[new]);
616 new_rx_ring[new].buf_length = cpu_to_le16(NEG_BUF_SIZE);
617 new_rx_ring[new].status = cpu_to_le16(0x8000);
618 }
619 /* and free any unneeded buffers */
620 for (; new < lp->rx_ring_size; new++) {
621 if (lp->rx_skbuff[new]) {
622 pci_unmap_single(lp->pci_dev, lp->rx_dma_addr[new],
623 PKT_BUF_SIZE, PCI_DMA_FROMDEVICE);
624 dev_kfree_skb(lp->rx_skbuff[new]);
625 }
626 }
627
628 kfree(lp->rx_skbuff);
629 kfree(lp->rx_dma_addr);
630 pci_free_consistent(lp->pci_dev,
631 sizeof(struct pcnet32_rx_head) *
632 lp->rx_ring_size, lp->rx_ring,
633 lp->rx_ring_dma_addr);
634
635 lp->rx_ring_size = (1 << size);
636 lp->rx_mod_mask = lp->rx_ring_size - 1;
637 lp->rx_len_bits = (size << 4);
638 lp->rx_ring = new_rx_ring;
639 lp->rx_ring_dma_addr = new_ring_dma_addr;
640 lp->rx_dma_addr = new_dma_addr_list;
641 lp->rx_skbuff = new_skb_list;
642 return;
643
644 free_all_new:
645 for (; --new >= lp->rx_ring_size; ) {
646 if (new_skb_list[new]) {
647 pci_unmap_single(lp->pci_dev, new_dma_addr_list[new],
648 PKT_BUF_SIZE, PCI_DMA_FROMDEVICE);
649 dev_kfree_skb(new_skb_list[new]);
650 }
651 }
652 kfree(new_skb_list);
653 free_new_lists:
654 kfree(new_dma_addr_list);
655 free_new_rx_ring:
656 pci_free_consistent(lp->pci_dev,
657 sizeof(struct pcnet32_rx_head) *
658 (1 << size),
659 new_rx_ring,
660 new_ring_dma_addr);
661 return;
662 }
663
664 static void pcnet32_purge_rx_ring(struct net_device *dev)
665 {
666 struct pcnet32_private *lp = netdev_priv(dev);
667 int i;
668
669 /* free all allocated skbuffs */
670 for (i = 0; i < lp->rx_ring_size; i++) {
671 lp->rx_ring[i].status = 0; /* CPU owns buffer */
672 wmb(); /* Make sure adapter sees owner change */
673 if (lp->rx_skbuff[i]) {
674 pci_unmap_single(lp->pci_dev, lp->rx_dma_addr[i],
675 PKT_BUF_SIZE, PCI_DMA_FROMDEVICE);
676 dev_kfree_skb_any(lp->rx_skbuff[i]);
677 }
678 lp->rx_skbuff[i] = NULL;
679 lp->rx_dma_addr[i] = 0;
680 }
681 }
682
683 #ifdef CONFIG_NET_POLL_CONTROLLER
684 static void pcnet32_poll_controller(struct net_device *dev)
685 {
686 disable_irq(dev->irq);
687 pcnet32_interrupt(0, dev);
688 enable_irq(dev->irq);
689 }
690 #endif
691
692 static int pcnet32_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
693 {
694 struct pcnet32_private *lp = netdev_priv(dev);
695 unsigned long flags;
696 int r = -EOPNOTSUPP;
697
698 if (lp->mii) {
699 spin_lock_irqsave(&lp->lock, flags);
700 mii_ethtool_gset(&lp->mii_if, cmd);
701 spin_unlock_irqrestore(&lp->lock, flags);
702 r = 0;
703 }
704 return r;
705 }
706
707 static int pcnet32_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
708 {
709 struct pcnet32_private *lp = netdev_priv(dev);
710 unsigned long flags;
711 int r = -EOPNOTSUPP;
712
713 if (lp->mii) {
714 spin_lock_irqsave(&lp->lock, flags);
715 r = mii_ethtool_sset(&lp->mii_if, cmd);
716 spin_unlock_irqrestore(&lp->lock, flags);
717 }
718 return r;
719 }
720
721 static void pcnet32_get_drvinfo(struct net_device *dev,
722 struct ethtool_drvinfo *info)
723 {
724 struct pcnet32_private *lp = netdev_priv(dev);
725
726 strcpy(info->driver, DRV_NAME);
727 strcpy(info->version, DRV_VERSION);
728 if (lp->pci_dev)
729 strcpy(info->bus_info, pci_name(lp->pci_dev));
730 else
731 sprintf(info->bus_info, "VLB 0x%lx", dev->base_addr);
732 }
733
734 static u32 pcnet32_get_link(struct net_device *dev)
735 {
736 struct pcnet32_private *lp = netdev_priv(dev);
737 unsigned long flags;
738 int r;
739
740 spin_lock_irqsave(&lp->lock, flags);
741 if (lp->mii) {
742 r = mii_link_ok(&lp->mii_if);
743 } else if (lp->chip_version >= PCNET32_79C970A) {
744 ulong ioaddr = dev->base_addr; /* card base I/O address */
745 r = (lp->a.read_bcr(ioaddr, 4) != 0xc0);
746 } else { /* can not detect link on really old chips */
747 r = 1;
748 }
749 spin_unlock_irqrestore(&lp->lock, flags);
750
751 return r;
752 }
753
754 static u32 pcnet32_get_msglevel(struct net_device *dev)
755 {
756 struct pcnet32_private *lp = netdev_priv(dev);
757 return lp->msg_enable;
758 }
759
760 static void pcnet32_set_msglevel(struct net_device *dev, u32 value)
761 {
762 struct pcnet32_private *lp = netdev_priv(dev);
763 lp->msg_enable = value;
764 }
765
766 static int pcnet32_nway_reset(struct net_device *dev)
767 {
768 struct pcnet32_private *lp = netdev_priv(dev);
769 unsigned long flags;
770 int r = -EOPNOTSUPP;
771
772 if (lp->mii) {
773 spin_lock_irqsave(&lp->lock, flags);
774 r = mii_nway_restart(&lp->mii_if);
775 spin_unlock_irqrestore(&lp->lock, flags);
776 }
777 return r;
778 }
779
780 static void pcnet32_get_ringparam(struct net_device *dev,
781 struct ethtool_ringparam *ering)
782 {
783 struct pcnet32_private *lp = netdev_priv(dev);
784
785 ering->tx_max_pending = TX_MAX_RING_SIZE;
786 ering->tx_pending = lp->tx_ring_size;
787 ering->rx_max_pending = RX_MAX_RING_SIZE;
788 ering->rx_pending = lp->rx_ring_size;
789 }
790
791 static int pcnet32_set_ringparam(struct net_device *dev,
792 struct ethtool_ringparam *ering)
793 {
794 struct pcnet32_private *lp = netdev_priv(dev);
795 unsigned long flags;
796 unsigned int size;
797 ulong ioaddr = dev->base_addr;
798 int i;
799
800 if (ering->rx_mini_pending || ering->rx_jumbo_pending)
801 return -EINVAL;
802
803 if (netif_running(dev))
804 pcnet32_netif_stop(dev);
805
806 spin_lock_irqsave(&lp->lock, flags);
807 lp->a.write_csr(ioaddr, CSR0, CSR0_STOP); /* stop the chip */
808
809 size = min(ering->tx_pending, (unsigned int)TX_MAX_RING_SIZE);
810
811 /* set the minimum ring size to 4, to allow the loopback test to work
812 * unchanged.
813 */
814 for (i = 2; i <= PCNET32_LOG_MAX_TX_BUFFERS; i++) {
815 if (size <= (1 << i))
816 break;
817 }
818 if ((1 << i) != lp->tx_ring_size)
819 pcnet32_realloc_tx_ring(dev, lp, i);
820
821 size = min(ering->rx_pending, (unsigned int)RX_MAX_RING_SIZE);
822 for (i = 2; i <= PCNET32_LOG_MAX_RX_BUFFERS; i++) {
823 if (size <= (1 << i))
824 break;
825 }
826 if ((1 << i) != lp->rx_ring_size)
827 pcnet32_realloc_rx_ring(dev, lp, i);
828
829 lp->napi.weight = lp->rx_ring_size / 2;
830
831 if (netif_running(dev)) {
832 pcnet32_netif_start(dev);
833 pcnet32_restart(dev, CSR0_NORMAL);
834 }
835
836 spin_unlock_irqrestore(&lp->lock, flags);
837
838 if (netif_msg_drv(lp))
839 printk(KERN_INFO
840 "%s: Ring Param Settings: RX: %d, TX: %d\n", dev->name,
841 lp->rx_ring_size, lp->tx_ring_size);
842
843 return 0;
844 }
845
846 static void pcnet32_get_strings(struct net_device *dev, u32 stringset,
847 u8 * data)
848 {
849 memcpy(data, pcnet32_gstrings_test, sizeof(pcnet32_gstrings_test));
850 }
851
852 static int pcnet32_get_sset_count(struct net_device *dev, int sset)
853 {
854 switch (sset) {
855 case ETH_SS_TEST:
856 return PCNET32_TEST_LEN;
857 default:
858 return -EOPNOTSUPP;
859 }
860 }
861
862 static void pcnet32_ethtool_test(struct net_device *dev,
863 struct ethtool_test *test, u64 * data)
864 {
865 struct pcnet32_private *lp = netdev_priv(dev);
866 int rc;
867
868 if (test->flags == ETH_TEST_FL_OFFLINE) {
869 rc = pcnet32_loopback_test(dev, data);
870 if (rc) {
871 if (netif_msg_hw(lp))
872 printk(KERN_DEBUG "%s: Loopback test failed.\n",
873 dev->name);
874 test->flags |= ETH_TEST_FL_FAILED;
875 } else if (netif_msg_hw(lp))
876 printk(KERN_DEBUG "%s: Loopback test passed.\n",
877 dev->name);
878 } else if (netif_msg_hw(lp))
879 printk(KERN_DEBUG
880 "%s: No tests to run (specify 'Offline' on ethtool).",
881 dev->name);
882 } /* end pcnet32_ethtool_test */
883
884 static int pcnet32_loopback_test(struct net_device *dev, uint64_t * data1)
885 {
886 struct pcnet32_private *lp = netdev_priv(dev);
887 struct pcnet32_access *a = &lp->a; /* access to registers */
888 ulong ioaddr = dev->base_addr; /* card base I/O address */
889 struct sk_buff *skb; /* sk buff */
890 int x, i; /* counters */
891 int numbuffs = 4; /* number of TX/RX buffers and descs */
892 u16 status = 0x8300; /* TX ring status */
893 __le16 teststatus; /* test of ring status */
894 int rc; /* return code */
895 int size; /* size of packets */
896 unsigned char *packet; /* source packet data */
897 static const int data_len = 60; /* length of source packets */
898 unsigned long flags;
899 unsigned long ticks;
900
901 rc = 1; /* default to fail */
902
903 if (netif_running(dev))
904 pcnet32_netif_stop(dev);
905
906 spin_lock_irqsave(&lp->lock, flags);
907 lp->a.write_csr(ioaddr, CSR0, CSR0_STOP); /* stop the chip */
908
909 numbuffs = min(numbuffs, (int)min(lp->rx_ring_size, lp->tx_ring_size));
910
911 /* Reset the PCNET32 */
912 lp->a.reset(ioaddr);
913 lp->a.write_csr(ioaddr, CSR4, 0x0915); /* auto tx pad */
914
915 /* switch pcnet32 to 32bit mode */
916 lp->a.write_bcr(ioaddr, 20, 2);
917
918 /* purge & init rings but don't actually restart */
919 pcnet32_restart(dev, 0x0000);
920
921 lp->a.write_csr(ioaddr, CSR0, CSR0_STOP); /* Set STOP bit */
922
923 /* Initialize Transmit buffers. */
924 size = data_len + 15;
925 for (x = 0; x < numbuffs; x++) {
926 if (!(skb = dev_alloc_skb(size))) {
927 if (netif_msg_hw(lp))
928 printk(KERN_DEBUG
929 "%s: Cannot allocate skb at line: %d!\n",
930 dev->name, __LINE__);
931 goto clean_up;
932 } else {
933 packet = skb->data;
934 skb_put(skb, size); /* create space for data */
935 lp->tx_skbuff[x] = skb;
936 lp->tx_ring[x].length = cpu_to_le16(-skb->len);
937 lp->tx_ring[x].misc = 0;
938
939 /* put DA and SA into the skb */
940 for (i = 0; i < 6; i++)
941 *packet++ = dev->dev_addr[i];
942 for (i = 0; i < 6; i++)
943 *packet++ = dev->dev_addr[i];
944 /* type */
945 *packet++ = 0x08;
946 *packet++ = 0x06;
947 /* packet number */
948 *packet++ = x;
949 /* fill packet with data */
950 for (i = 0; i < data_len; i++)
951 *packet++ = i;
952
953 lp->tx_dma_addr[x] =
954 pci_map_single(lp->pci_dev, skb->data, skb->len,
955 PCI_DMA_TODEVICE);
956 lp->tx_ring[x].base = cpu_to_le32(lp->tx_dma_addr[x]);
957 wmb(); /* Make sure owner changes after all others are visible */
958 lp->tx_ring[x].status = cpu_to_le16(status);
959 }
960 }
961
962 x = a->read_bcr(ioaddr, 32); /* set internal loopback in BCR32 */
963 a->write_bcr(ioaddr, 32, x | 0x0002);
964
965 /* set int loopback in CSR15 */
966 x = a->read_csr(ioaddr, CSR15) & 0xfffc;
967 lp->a.write_csr(ioaddr, CSR15, x | 0x0044);
968
969 teststatus = cpu_to_le16(0x8000);
970 lp->a.write_csr(ioaddr, CSR0, CSR0_START); /* Set STRT bit */
971
972 /* Check status of descriptors */
973 for (x = 0; x < numbuffs; x++) {
974 ticks = 0;
975 rmb();
976 while ((lp->rx_ring[x].status & teststatus) && (ticks < 200)) {
977 spin_unlock_irqrestore(&lp->lock, flags);
978 msleep(1);
979 spin_lock_irqsave(&lp->lock, flags);
980 rmb();
981 ticks++;
982 }
983 if (ticks == 200) {
984 if (netif_msg_hw(lp))
985 printk("%s: Desc %d failed to reset!\n",
986 dev->name, x);
987 break;
988 }
989 }
990
991 lp->a.write_csr(ioaddr, CSR0, CSR0_STOP); /* Set STOP bit */
992 wmb();
993 if (netif_msg_hw(lp) && netif_msg_pktdata(lp)) {
994 printk(KERN_DEBUG "%s: RX loopback packets:\n", dev->name);
995
996 for (x = 0; x < numbuffs; x++) {
997 printk(KERN_DEBUG "%s: Packet %d:\n", dev->name, x);
998 skb = lp->rx_skbuff[x];
999 for (i = 0; i < size; i++) {
1000 printk("%02x ", *(skb->data + i));
1001 }
1002 printk("\n");
1003 }
1004 }
1005
1006 x = 0;
1007 rc = 0;
1008 while (x < numbuffs && !rc) {
1009 skb = lp->rx_skbuff[x];
1010 packet = lp->tx_skbuff[x]->data;
1011 for (i = 0; i < size; i++) {
1012 if (*(skb->data + i) != packet[i]) {
1013 if (netif_msg_hw(lp))
1014 printk(KERN_DEBUG
1015 "%s: Error in compare! %2x - %02x %02x\n",
1016 dev->name, i, *(skb->data + i),
1017 packet[i]);
1018 rc = 1;
1019 break;
1020 }
1021 }
1022 x++;
1023 }
1024
1025 clean_up:
1026 *data1 = rc;
1027 pcnet32_purge_tx_ring(dev);
1028
1029 x = a->read_csr(ioaddr, CSR15);
1030 a->write_csr(ioaddr, CSR15, (x & ~0x0044)); /* reset bits 6 and 2 */
1031
1032 x = a->read_bcr(ioaddr, 32); /* reset internal loopback */
1033 a->write_bcr(ioaddr, 32, (x & ~0x0002));
1034
1035 if (netif_running(dev)) {
1036 pcnet32_netif_start(dev);
1037 pcnet32_restart(dev, CSR0_NORMAL);
1038 } else {
1039 pcnet32_purge_rx_ring(dev);
1040 lp->a.write_bcr(ioaddr, 20, 4); /* return to 16bit mode */
1041 }
1042 spin_unlock_irqrestore(&lp->lock, flags);
1043
1044 return (rc);
1045 } /* end pcnet32_loopback_test */
1046
1047 static void pcnet32_led_blink_callback(struct net_device *dev)
1048 {
1049 struct pcnet32_private *lp = netdev_priv(dev);
1050 struct pcnet32_access *a = &lp->a;
1051 ulong ioaddr = dev->base_addr;
1052 unsigned long flags;
1053 int i;
1054
1055 spin_lock_irqsave(&lp->lock, flags);
1056 for (i = 4; i < 8; i++) {
1057 a->write_bcr(ioaddr, i, a->read_bcr(ioaddr, i) ^ 0x4000);
1058 }
1059 spin_unlock_irqrestore(&lp->lock, flags);
1060
1061 mod_timer(&lp->blink_timer, PCNET32_BLINK_TIMEOUT);
1062 }
1063
1064 static int pcnet32_phys_id(struct net_device *dev, u32 data)
1065 {
1066 struct pcnet32_private *lp = netdev_priv(dev);
1067 struct pcnet32_access *a = &lp->a;
1068 ulong ioaddr = dev->base_addr;
1069 unsigned long flags;
1070 int i, regs[4];
1071
1072 if (!lp->blink_timer.function) {
1073 init_timer(&lp->blink_timer);
1074 lp->blink_timer.function = (void *)pcnet32_led_blink_callback;
1075 lp->blink_timer.data = (unsigned long)dev;
1076 }
1077
1078 /* Save the current value of the bcrs */
1079 spin_lock_irqsave(&lp->lock, flags);
1080 for (i = 4; i < 8; i++) {
1081 regs[i - 4] = a->read_bcr(ioaddr, i);
1082 }
1083 spin_unlock_irqrestore(&lp->lock, flags);
1084
1085 mod_timer(&lp->blink_timer, jiffies);
1086 set_current_state(TASK_INTERRUPTIBLE);
1087
1088 /* AV: the limit here makes no sense whatsoever */
1089 if ((!data) || (data > (u32) (MAX_SCHEDULE_TIMEOUT / HZ)))
1090 data = (u32) (MAX_SCHEDULE_TIMEOUT / HZ);
1091
1092 msleep_interruptible(data * 1000);
1093 del_timer_sync(&lp->blink_timer);
1094
1095 /* Restore the original value of the bcrs */
1096 spin_lock_irqsave(&lp->lock, flags);
1097 for (i = 4; i < 8; i++) {
1098 a->write_bcr(ioaddr, i, regs[i - 4]);
1099 }
1100 spin_unlock_irqrestore(&lp->lock, flags);
1101
1102 return 0;
1103 }
1104
1105 /*
1106 * lp->lock must be held.
1107 */
1108 static int pcnet32_suspend(struct net_device *dev, unsigned long *flags,
1109 int can_sleep)
1110 {
1111 int csr5;
1112 struct pcnet32_private *lp = netdev_priv(dev);
1113 struct pcnet32_access *a = &lp->a;
1114 ulong ioaddr = dev->base_addr;
1115 int ticks;
1116
1117 /* really old chips have to be stopped. */
1118 if (lp->chip_version < PCNET32_79C970A)
1119 return 0;
1120
1121 /* set SUSPEND (SPND) - CSR5 bit 0 */
1122 csr5 = a->read_csr(ioaddr, CSR5);
1123 a->write_csr(ioaddr, CSR5, csr5 | CSR5_SUSPEND);
1124
1125 /* poll waiting for bit to be set */
1126 ticks = 0;
1127 while (!(a->read_csr(ioaddr, CSR5) & CSR5_SUSPEND)) {
1128 spin_unlock_irqrestore(&lp->lock, *flags);
1129 if (can_sleep)
1130 msleep(1);
1131 else
1132 mdelay(1);
1133 spin_lock_irqsave(&lp->lock, *flags);
1134 ticks++;
1135 if (ticks > 200) {
1136 if (netif_msg_hw(lp))
1137 printk(KERN_DEBUG
1138 "%s: Error getting into suspend!\n",
1139 dev->name);
1140 return 0;
1141 }
1142 }
1143 return 1;
1144 }
1145
1146 /*
1147 * process one receive descriptor entry
1148 */
1149
1150 static void pcnet32_rx_entry(struct net_device *dev,
1151 struct pcnet32_private *lp,
1152 struct pcnet32_rx_head *rxp,
1153 int entry)
1154 {
1155 int status = (short)le16_to_cpu(rxp->status) >> 8;
1156 int rx_in_place = 0;
1157 struct sk_buff *skb;
1158 short pkt_len;
1159
1160 if (status != 0x03) { /* There was an error. */
1161 /*
1162 * There is a tricky error noted by John Murphy,
1163 * <murf@perftech.com> to Russ Nelson: Even with full-sized
1164 * buffers it's possible for a jabber packet to use two
1165 * buffers, with only the last correctly noting the error.
1166 */
1167 if (status & 0x01) /* Only count a general error at the */
1168 dev->stats.rx_errors++; /* end of a packet. */
1169 if (status & 0x20)
1170 dev->stats.rx_frame_errors++;
1171 if (status & 0x10)
1172 dev->stats.rx_over_errors++;
1173 if (status & 0x08)
1174 dev->stats.rx_crc_errors++;
1175 if (status & 0x04)
1176 dev->stats.rx_fifo_errors++;
1177 return;
1178 }
1179
1180 pkt_len = (le32_to_cpu(rxp->msg_length) & 0xfff) - 4;
1181
1182 /* Discard oversize frames. */
1183 if (unlikely(pkt_len > PKT_BUF_SIZE)) {
1184 if (netif_msg_drv(lp))
1185 printk(KERN_ERR "%s: Impossible packet size %d!\n",
1186 dev->name, pkt_len);
1187 dev->stats.rx_errors++;
1188 return;
1189 }
1190 if (pkt_len < 60) {
1191 if (netif_msg_rx_err(lp))
1192 printk(KERN_ERR "%s: Runt packet!\n", dev->name);
1193 dev->stats.rx_errors++;
1194 return;
1195 }
1196
1197 if (pkt_len > rx_copybreak) {
1198 struct sk_buff *newskb;
1199
1200 if ((newskb = dev_alloc_skb(PKT_BUF_SKB))) {
1201 skb_reserve(newskb, NET_IP_ALIGN);
1202 skb = lp->rx_skbuff[entry];
1203 pci_unmap_single(lp->pci_dev,
1204 lp->rx_dma_addr[entry],
1205 PKT_BUF_SIZE,
1206 PCI_DMA_FROMDEVICE);
1207 skb_put(skb, pkt_len);
1208 lp->rx_skbuff[entry] = newskb;
1209 lp->rx_dma_addr[entry] =
1210 pci_map_single(lp->pci_dev,
1211 newskb->data,
1212 PKT_BUF_SIZE,
1213 PCI_DMA_FROMDEVICE);
1214 rxp->base = cpu_to_le32(lp->rx_dma_addr[entry]);
1215 rx_in_place = 1;
1216 } else
1217 skb = NULL;
1218 } else {
1219 skb = dev_alloc_skb(pkt_len + NET_IP_ALIGN);
1220 }
1221
1222 if (skb == NULL) {
1223 if (netif_msg_drv(lp))
1224 printk(KERN_ERR
1225 "%s: Memory squeeze, dropping packet.\n",
1226 dev->name);
1227 dev->stats.rx_dropped++;
1228 return;
1229 }
1230 if (!rx_in_place) {
1231 skb_reserve(skb, NET_IP_ALIGN);
1232 skb_put(skb, pkt_len); /* Make room */
1233 pci_dma_sync_single_for_cpu(lp->pci_dev,
1234 lp->rx_dma_addr[entry],
1235 pkt_len,
1236 PCI_DMA_FROMDEVICE);
1237 skb_copy_to_linear_data(skb,
1238 (unsigned char *)(lp->rx_skbuff[entry]->data),
1239 pkt_len);
1240 pci_dma_sync_single_for_device(lp->pci_dev,
1241 lp->rx_dma_addr[entry],
1242 pkt_len,
1243 PCI_DMA_FROMDEVICE);
1244 }
1245 dev->stats.rx_bytes += skb->len;
1246 skb->protocol = eth_type_trans(skb, dev);
1247 netif_receive_skb(skb);
1248 dev->stats.rx_packets++;
1249 return;
1250 }
1251
1252 static int pcnet32_rx(struct net_device *dev, int budget)
1253 {
1254 struct pcnet32_private *lp = netdev_priv(dev);
1255 int entry = lp->cur_rx & lp->rx_mod_mask;
1256 struct pcnet32_rx_head *rxp = &lp->rx_ring[entry];
1257 int npackets = 0;
1258
1259 /* If we own the next entry, it's a new packet. Send it up. */
1260 while (npackets < budget && (short)le16_to_cpu(rxp->status) >= 0) {
1261 pcnet32_rx_entry(dev, lp, rxp, entry);
1262 npackets += 1;
1263 /*
1264 * The docs say that the buffer length isn't touched, but Andrew
1265 * Boyd of QNX reports that some revs of the 79C965 clear it.
1266 */
1267 rxp->buf_length = cpu_to_le16(NEG_BUF_SIZE);
1268 wmb(); /* Make sure owner changes after others are visible */
1269 rxp->status = cpu_to_le16(0x8000);
1270 entry = (++lp->cur_rx) & lp->rx_mod_mask;
1271 rxp = &lp->rx_ring[entry];
1272 }
1273
1274 return npackets;
1275 }
1276
1277 static int pcnet32_tx(struct net_device *dev)
1278 {
1279 struct pcnet32_private *lp = netdev_priv(dev);
1280 unsigned int dirty_tx = lp->dirty_tx;
1281 int delta;
1282 int must_restart = 0;
1283
1284 while (dirty_tx != lp->cur_tx) {
1285 int entry = dirty_tx & lp->tx_mod_mask;
1286 int status = (short)le16_to_cpu(lp->tx_ring[entry].status);
1287
1288 if (status < 0)
1289 break; /* It still hasn't been Txed */
1290
1291 lp->tx_ring[entry].base = 0;
1292
1293 if (status & 0x4000) {
1294 /* There was a major error, log it. */
1295 int err_status = le32_to_cpu(lp->tx_ring[entry].misc);
1296 dev->stats.tx_errors++;
1297 if (netif_msg_tx_err(lp))
1298 printk(KERN_ERR
1299 "%s: Tx error status=%04x err_status=%08x\n",
1300 dev->name, status,
1301 err_status);
1302 if (err_status & 0x04000000)
1303 dev->stats.tx_aborted_errors++;
1304 if (err_status & 0x08000000)
1305 dev->stats.tx_carrier_errors++;
1306 if (err_status & 0x10000000)
1307 dev->stats.tx_window_errors++;
1308 #ifndef DO_DXSUFLO
1309 if (err_status & 0x40000000) {
1310 dev->stats.tx_fifo_errors++;
1311 /* Ackk! On FIFO errors the Tx unit is turned off! */
1312 /* Remove this verbosity later! */
1313 if (netif_msg_tx_err(lp))
1314 printk(KERN_ERR
1315 "%s: Tx FIFO error!\n",
1316 dev->name);
1317 must_restart = 1;
1318 }
1319 #else
1320 if (err_status & 0x40000000) {
1321 dev->stats.tx_fifo_errors++;
1322 if (!lp->dxsuflo) { /* If controller doesn't recover ... */
1323 /* Ackk! On FIFO errors the Tx unit is turned off! */
1324 /* Remove this verbosity later! */
1325 if (netif_msg_tx_err(lp))
1326 printk(KERN_ERR
1327 "%s: Tx FIFO error!\n",
1328 dev->name);
1329 must_restart = 1;
1330 }
1331 }
1332 #endif
1333 } else {
1334 if (status & 0x1800)
1335 dev->stats.collisions++;
1336 dev->stats.tx_packets++;
1337 }
1338
1339 /* We must free the original skb */
1340 if (lp->tx_skbuff[entry]) {
1341 pci_unmap_single(lp->pci_dev,
1342 lp->tx_dma_addr[entry],
1343 lp->tx_skbuff[entry]->
1344 len, PCI_DMA_TODEVICE);
1345 dev_kfree_skb_any(lp->tx_skbuff[entry]);
1346 lp->tx_skbuff[entry] = NULL;
1347 lp->tx_dma_addr[entry] = 0;
1348 }
1349 dirty_tx++;
1350 }
1351
1352 delta = (lp->cur_tx - dirty_tx) & (lp->tx_mod_mask + lp->tx_ring_size);
1353 if (delta > lp->tx_ring_size) {
1354 if (netif_msg_drv(lp))
1355 printk(KERN_ERR
1356 "%s: out-of-sync dirty pointer, %d vs. %d, full=%d.\n",
1357 dev->name, dirty_tx, lp->cur_tx,
1358 lp->tx_full);
1359 dirty_tx += lp->tx_ring_size;
1360 delta -= lp->tx_ring_size;
1361 }
1362
1363 if (lp->tx_full &&
1364 netif_queue_stopped(dev) &&
1365 delta < lp->tx_ring_size - 2) {
1366 /* The ring is no longer full, clear tbusy. */
1367 lp->tx_full = 0;
1368 netif_wake_queue(dev);
1369 }
1370 lp->dirty_tx = dirty_tx;
1371
1372 return must_restart;
1373 }
1374
1375 static int pcnet32_poll(struct napi_struct *napi, int budget)
1376 {
1377 struct pcnet32_private *lp = container_of(napi, struct pcnet32_private, napi);
1378 struct net_device *dev = lp->dev;
1379 unsigned long ioaddr = dev->base_addr;
1380 unsigned long flags;
1381 int work_done;
1382 u16 val;
1383
1384 work_done = pcnet32_rx(dev, budget);
1385
1386 spin_lock_irqsave(&lp->lock, flags);
1387 if (pcnet32_tx(dev)) {
1388 /* reset the chip to clear the error condition, then restart */
1389 lp->a.reset(ioaddr);
1390 lp->a.write_csr(ioaddr, CSR4, 0x0915); /* auto tx pad */
1391 pcnet32_restart(dev, CSR0_START);
1392 netif_wake_queue(dev);
1393 }
1394 spin_unlock_irqrestore(&lp->lock, flags);
1395
1396 if (work_done < budget) {
1397 spin_lock_irqsave(&lp->lock, flags);
1398
1399 __napi_complete(napi);
1400
1401 /* clear interrupt masks */
1402 val = lp->a.read_csr(ioaddr, CSR3);
1403 val &= 0x00ff;
1404 lp->a.write_csr(ioaddr, CSR3, val);
1405
1406 /* Set interrupt enable. */
1407 lp->a.write_csr(ioaddr, CSR0, CSR0_INTEN);
1408
1409 spin_unlock_irqrestore(&lp->lock, flags);
1410 }
1411 return work_done;
1412 }
1413
1414 #define PCNET32_REGS_PER_PHY 32
1415 #define PCNET32_MAX_PHYS 32
1416 static int pcnet32_get_regs_len(struct net_device *dev)
1417 {
1418 struct pcnet32_private *lp = netdev_priv(dev);
1419 int j = lp->phycount * PCNET32_REGS_PER_PHY;
1420
1421 return ((PCNET32_NUM_REGS + j) * sizeof(u16));
1422 }
1423
1424 static void pcnet32_get_regs(struct net_device *dev, struct ethtool_regs *regs,
1425 void *ptr)
1426 {
1427 int i, csr0;
1428 u16 *buff = ptr;
1429 struct pcnet32_private *lp = netdev_priv(dev);
1430 struct pcnet32_access *a = &lp->a;
1431 ulong ioaddr = dev->base_addr;
1432 unsigned long flags;
1433
1434 spin_lock_irqsave(&lp->lock, flags);
1435
1436 csr0 = a->read_csr(ioaddr, CSR0);
1437 if (!(csr0 & CSR0_STOP)) /* If not stopped */
1438 pcnet32_suspend(dev, &flags, 1);
1439
1440 /* read address PROM */
1441 for (i = 0; i < 16; i += 2)
1442 *buff++ = inw(ioaddr + i);
1443
1444 /* read control and status registers */
1445 for (i = 0; i < 90; i++) {
1446 *buff++ = a->read_csr(ioaddr, i);
1447 }
1448
1449 *buff++ = a->read_csr(ioaddr, 112);
1450 *buff++ = a->read_csr(ioaddr, 114);
1451
1452 /* read bus configuration registers */
1453 for (i = 0; i < 30; i++) {
1454 *buff++ = a->read_bcr(ioaddr, i);
1455 }
1456 *buff++ = 0; /* skip bcr30 so as not to hang 79C976 */
1457 for (i = 31; i < 36; i++) {
1458 *buff++ = a->read_bcr(ioaddr, i);
1459 }
1460
1461 /* read mii phy registers */
1462 if (lp->mii) {
1463 int j;
1464 for (j = 0; j < PCNET32_MAX_PHYS; j++) {
1465 if (lp->phymask & (1 << j)) {
1466 for (i = 0; i < PCNET32_REGS_PER_PHY; i++) {
1467 lp->a.write_bcr(ioaddr, 33,
1468 (j << 5) | i);
1469 *buff++ = lp->a.read_bcr(ioaddr, 34);
1470 }
1471 }
1472 }
1473 }
1474
1475 if (!(csr0 & CSR0_STOP)) { /* If not stopped */
1476 int csr5;
1477
1478 /* clear SUSPEND (SPND) - CSR5 bit 0 */
1479 csr5 = a->read_csr(ioaddr, CSR5);
1480 a->write_csr(ioaddr, CSR5, csr5 & (~CSR5_SUSPEND));
1481 }
1482
1483 spin_unlock_irqrestore(&lp->lock, flags);
1484 }
1485
1486 static const struct ethtool_ops pcnet32_ethtool_ops = {
1487 .get_settings = pcnet32_get_settings,
1488 .set_settings = pcnet32_set_settings,
1489 .get_drvinfo = pcnet32_get_drvinfo,
1490 .get_msglevel = pcnet32_get_msglevel,
1491 .set_msglevel = pcnet32_set_msglevel,
1492 .nway_reset = pcnet32_nway_reset,
1493 .get_link = pcnet32_get_link,
1494 .get_ringparam = pcnet32_get_ringparam,
1495 .set_ringparam = pcnet32_set_ringparam,
1496 .get_strings = pcnet32_get_strings,
1497 .self_test = pcnet32_ethtool_test,
1498 .phys_id = pcnet32_phys_id,
1499 .get_regs_len = pcnet32_get_regs_len,
1500 .get_regs = pcnet32_get_regs,
1501 .get_sset_count = pcnet32_get_sset_count,
1502 };
1503
1504 /* only probes for non-PCI devices, the rest are handled by
1505 * pci_register_driver via pcnet32_probe_pci */
1506
1507 static void __devinit pcnet32_probe_vlbus(unsigned int *pcnet32_portlist)
1508 {
1509 unsigned int *port, ioaddr;
1510
1511 /* search for PCnet32 VLB cards at known addresses */
1512 for (port = pcnet32_portlist; (ioaddr = *port); port++) {
1513 if (request_region
1514 (ioaddr, PCNET32_TOTAL_SIZE, "pcnet32_probe_vlbus")) {
1515 /* check if there is really a pcnet chip on that ioaddr */
1516 if ((inb(ioaddr + 14) == 0x57)
1517 && (inb(ioaddr + 15) == 0x57)) {
1518 pcnet32_probe1(ioaddr, 0, NULL);
1519 } else {
1520 release_region(ioaddr, PCNET32_TOTAL_SIZE);
1521 }
1522 }
1523 }
1524 }
1525
1526 static int __devinit
1527 pcnet32_probe_pci(struct pci_dev *pdev, const struct pci_device_id *ent)
1528 {
1529 unsigned long ioaddr;
1530 int err;
1531
1532 err = pci_enable_device(pdev);
1533 if (err < 0) {
1534 if (pcnet32_debug & NETIF_MSG_PROBE)
1535 printk(KERN_ERR PFX
1536 "failed to enable device -- err=%d\n", err);
1537 return err;
1538 }
1539 pci_set_master(pdev);
1540
1541 ioaddr = pci_resource_start(pdev, 0);
1542 if (!ioaddr) {
1543 if (pcnet32_debug & NETIF_MSG_PROBE)
1544 printk(KERN_ERR PFX
1545 "card has no PCI IO resources, aborting\n");
1546 return -ENODEV;
1547 }
1548
1549 if (!pci_dma_supported(pdev, PCNET32_DMA_MASK)) {
1550 if (pcnet32_debug & NETIF_MSG_PROBE)
1551 printk(KERN_ERR PFX
1552 "architecture does not support 32bit PCI busmaster DMA\n");
1553 return -ENODEV;
1554 }
1555 if (request_region(ioaddr, PCNET32_TOTAL_SIZE, "pcnet32_probe_pci") ==
1556 NULL) {
1557 if (pcnet32_debug & NETIF_MSG_PROBE)
1558 printk(KERN_ERR PFX
1559 "io address range already allocated\n");
1560 return -EBUSY;
1561 }
1562
1563 err = pcnet32_probe1(ioaddr, 1, pdev);
1564 if (err < 0) {
1565 pci_disable_device(pdev);
1566 }
1567 return err;
1568 }
1569
1570 static const struct net_device_ops pcnet32_netdev_ops = {
1571 .ndo_open = pcnet32_open,
1572 .ndo_stop = pcnet32_close,
1573 .ndo_start_xmit = pcnet32_start_xmit,
1574 .ndo_tx_timeout = pcnet32_tx_timeout,
1575 .ndo_get_stats = pcnet32_get_stats,
1576 .ndo_set_multicast_list = pcnet32_set_multicast_list,
1577 .ndo_do_ioctl = pcnet32_ioctl,
1578 .ndo_change_mtu = eth_change_mtu,
1579 .ndo_set_mac_address = eth_mac_addr,
1580 .ndo_validate_addr = eth_validate_addr,
1581 #ifdef CONFIG_NET_POLL_CONTROLLER
1582 .ndo_poll_controller = pcnet32_poll_controller,
1583 #endif
1584 };
1585
1586 /* pcnet32_probe1
1587 * Called from both pcnet32_probe_vlbus and pcnet_probe_pci.
1588 * pdev will be NULL when called from pcnet32_probe_vlbus.
1589 */
1590 static int __devinit
1591 pcnet32_probe1(unsigned long ioaddr, int shared, struct pci_dev *pdev)
1592 {
1593 struct pcnet32_private *lp;
1594 int i, media;
1595 int fdx, mii, fset, dxsuflo;
1596 int chip_version;
1597 char *chipname;
1598 struct net_device *dev;
1599 struct pcnet32_access *a = NULL;
1600 u8 promaddr[6];
1601 int ret = -ENODEV;
1602
1603 /* reset the chip */
1604 pcnet32_wio_reset(ioaddr);
1605
1606 /* NOTE: 16-bit check is first, otherwise some older PCnet chips fail */
1607 if (pcnet32_wio_read_csr(ioaddr, 0) == 4 && pcnet32_wio_check(ioaddr)) {
1608 a = &pcnet32_wio;
1609 } else {
1610 pcnet32_dwio_reset(ioaddr);
1611 if (pcnet32_dwio_read_csr(ioaddr, 0) == 4
1612 && pcnet32_dwio_check(ioaddr)) {
1613 a = &pcnet32_dwio;
1614 } else
1615 goto err_release_region;
1616 }
1617
1618 chip_version =
1619 a->read_csr(ioaddr, 88) | (a->read_csr(ioaddr, 89) << 16);
1620 if ((pcnet32_debug & NETIF_MSG_PROBE) && (pcnet32_debug & NETIF_MSG_HW))
1621 printk(KERN_INFO " PCnet chip version is %#x.\n",
1622 chip_version);
1623 if ((chip_version & 0xfff) != 0x003) {
1624 if (pcnet32_debug & NETIF_MSG_PROBE)
1625 printk(KERN_INFO PFX "Unsupported chip version.\n");
1626 goto err_release_region;
1627 }
1628
1629 /* initialize variables */
1630 fdx = mii = fset = dxsuflo = 0;
1631 chip_version = (chip_version >> 12) & 0xffff;
1632
1633 switch (chip_version) {
1634 case 0x2420:
1635 chipname = "PCnet/PCI 79C970"; /* PCI */
1636 break;
1637 case 0x2430:
1638 if (shared)
1639 chipname = "PCnet/PCI 79C970"; /* 970 gives the wrong chip id back */
1640 else
1641 chipname = "PCnet/32 79C965"; /* 486/VL bus */
1642 break;
1643 case 0x2621:
1644 chipname = "PCnet/PCI II 79C970A"; /* PCI */
1645 fdx = 1;
1646 break;
1647 case 0x2623:
1648 chipname = "PCnet/FAST 79C971"; /* PCI */
1649 fdx = 1;
1650 mii = 1;
1651 fset = 1;
1652 break;
1653 case 0x2624:
1654 chipname = "PCnet/FAST+ 79C972"; /* PCI */
1655 fdx = 1;
1656 mii = 1;
1657 fset = 1;
1658 break;
1659 case 0x2625:
1660 chipname = "PCnet/FAST III 79C973"; /* PCI */
1661 fdx = 1;
1662 mii = 1;
1663 break;
1664 case 0x2626:
1665 chipname = "PCnet/Home 79C978"; /* PCI */
1666 fdx = 1;
1667 /*
1668 * This is based on specs published at www.amd.com. This section
1669 * assumes that a card with a 79C978 wants to go into standard
1670 * ethernet mode. The 79C978 can also go into 1Mb HomePNA mode,
1671 * and the module option homepna=1 can select this instead.
1672 */
1673 media = a->read_bcr(ioaddr, 49);
1674 media &= ~3; /* default to 10Mb ethernet */
1675 if (cards_found < MAX_UNITS && homepna[cards_found])
1676 media |= 1; /* switch to home wiring mode */
1677 if (pcnet32_debug & NETIF_MSG_PROBE)
1678 printk(KERN_DEBUG PFX "media set to %sMbit mode.\n",
1679 (media & 1) ? "1" : "10");
1680 a->write_bcr(ioaddr, 49, media);
1681 break;
1682 case 0x2627:
1683 chipname = "PCnet/FAST III 79C975"; /* PCI */
1684 fdx = 1;
1685 mii = 1;
1686 break;
1687 case 0x2628:
1688 chipname = "PCnet/PRO 79C976";
1689 fdx = 1;
1690 mii = 1;
1691 break;
1692 default:
1693 if (pcnet32_debug & NETIF_MSG_PROBE)
1694 printk(KERN_INFO PFX
1695 "PCnet version %#x, no PCnet32 chip.\n",
1696 chip_version);
1697 goto err_release_region;
1698 }
1699
1700 /*
1701 * On selected chips turn on the BCR18:NOUFLO bit. This stops transmit
1702 * starting until the packet is loaded. Strike one for reliability, lose
1703 * one for latency - although on PCI this isnt a big loss. Older chips
1704 * have FIFO's smaller than a packet, so you can't do this.
1705 * Turn on BCR18:BurstRdEn and BCR18:BurstWrEn.
1706 */
1707
1708 if (fset) {
1709 a->write_bcr(ioaddr, 18, (a->read_bcr(ioaddr, 18) | 0x0860));
1710 a->write_csr(ioaddr, 80,
1711 (a->read_csr(ioaddr, 80) & 0x0C00) | 0x0c00);
1712 dxsuflo = 1;
1713 }
1714
1715 dev = alloc_etherdev(sizeof(*lp));
1716 if (!dev) {
1717 if (pcnet32_debug & NETIF_MSG_PROBE)
1718 printk(KERN_ERR PFX "Memory allocation failed.\n");
1719 ret = -ENOMEM;
1720 goto err_release_region;
1721 }
1722 SET_NETDEV_DEV(dev, &pdev->dev);
1723
1724 if (pcnet32_debug & NETIF_MSG_PROBE)
1725 printk(KERN_INFO PFX "%s at %#3lx,", chipname, ioaddr);
1726
1727 /* In most chips, after a chip reset, the ethernet address is read from the
1728 * station address PROM at the base address and programmed into the
1729 * "Physical Address Registers" CSR12-14.
1730 * As a precautionary measure, we read the PROM values and complain if
1731 * they disagree with the CSRs. If they miscompare, and the PROM addr
1732 * is valid, then the PROM addr is used.
1733 */
1734 for (i = 0; i < 3; i++) {
1735 unsigned int val;
1736 val = a->read_csr(ioaddr, i + 12) & 0x0ffff;
1737 /* There may be endianness issues here. */
1738 dev->dev_addr[2 * i] = val & 0x0ff;
1739 dev->dev_addr[2 * i + 1] = (val >> 8) & 0x0ff;
1740 }
1741
1742 /* read PROM address and compare with CSR address */
1743 for (i = 0; i < 6; i++)
1744 promaddr[i] = inb(ioaddr + i);
1745
1746 if (memcmp(promaddr, dev->dev_addr, 6)
1747 || !is_valid_ether_addr(dev->dev_addr)) {
1748 if (is_valid_ether_addr(promaddr)) {
1749 if (pcnet32_debug & NETIF_MSG_PROBE) {
1750 printk(" warning: CSR address invalid,\n");
1751 printk(KERN_INFO
1752 " using instead PROM address of");
1753 }
1754 memcpy(dev->dev_addr, promaddr, 6);
1755 }
1756 }
1757 memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
1758
1759 /* if the ethernet address is not valid, force to 00:00:00:00:00:00 */
1760 if (!is_valid_ether_addr(dev->perm_addr))
1761 memset(dev->dev_addr, 0, sizeof(dev->dev_addr));
1762
1763 if (pcnet32_debug & NETIF_MSG_PROBE) {
1764 printk(" %pM", dev->dev_addr);
1765
1766 /* Version 0x2623 and 0x2624 */
1767 if (((chip_version + 1) & 0xfffe) == 0x2624) {
1768 i = a->read_csr(ioaddr, 80) & 0x0C00; /* Check tx_start_pt */
1769 printk("\n" KERN_INFO " tx_start_pt(0x%04x):", i);
1770 switch (i >> 10) {
1771 case 0:
1772 printk(" 20 bytes,");
1773 break;
1774 case 1:
1775 printk(" 64 bytes,");
1776 break;
1777 case 2:
1778 printk(" 128 bytes,");
1779 break;
1780 case 3:
1781 printk("~220 bytes,");
1782 break;
1783 }
1784 i = a->read_bcr(ioaddr, 18); /* Check Burst/Bus control */
1785 printk(" BCR18(%x):", i & 0xffff);
1786 if (i & (1 << 5))
1787 printk("BurstWrEn ");
1788 if (i & (1 << 6))
1789 printk("BurstRdEn ");
1790 if (i & (1 << 7))
1791 printk("DWordIO ");
1792 if (i & (1 << 11))
1793 printk("NoUFlow ");
1794 i = a->read_bcr(ioaddr, 25);
1795 printk("\n" KERN_INFO " SRAMSIZE=0x%04x,", i << 8);
1796 i = a->read_bcr(ioaddr, 26);
1797 printk(" SRAM_BND=0x%04x,", i << 8);
1798 i = a->read_bcr(ioaddr, 27);
1799 if (i & (1 << 14))
1800 printk("LowLatRx");
1801 }
1802 }
1803
1804 dev->base_addr = ioaddr;
1805 lp = netdev_priv(dev);
1806 /* pci_alloc_consistent returns page-aligned memory, so we do not have to check the alignment */
1807 if ((lp->init_block =
1808 pci_alloc_consistent(pdev, sizeof(*lp->init_block), &lp->init_dma_addr)) == NULL) {
1809 if (pcnet32_debug & NETIF_MSG_PROBE)
1810 printk(KERN_ERR PFX
1811 "Consistent memory allocation failed.\n");
1812 ret = -ENOMEM;
1813 goto err_free_netdev;
1814 }
1815 lp->pci_dev = pdev;
1816
1817 lp->dev = dev;
1818
1819 spin_lock_init(&lp->lock);
1820
1821 SET_NETDEV_DEV(dev, &pdev->dev);
1822 lp->name = chipname;
1823 lp->shared_irq = shared;
1824 lp->tx_ring_size = TX_RING_SIZE; /* default tx ring size */
1825 lp->rx_ring_size = RX_RING_SIZE; /* default rx ring size */
1826 lp->tx_mod_mask = lp->tx_ring_size - 1;
1827 lp->rx_mod_mask = lp->rx_ring_size - 1;
1828 lp->tx_len_bits = (PCNET32_LOG_TX_BUFFERS << 12);
1829 lp->rx_len_bits = (PCNET32_LOG_RX_BUFFERS << 4);
1830 lp->mii_if.full_duplex = fdx;
1831 lp->mii_if.phy_id_mask = 0x1f;
1832 lp->mii_if.reg_num_mask = 0x1f;
1833 lp->dxsuflo = dxsuflo;
1834 lp->mii = mii;
1835 lp->chip_version = chip_version;
1836 lp->msg_enable = pcnet32_debug;
1837 if ((cards_found >= MAX_UNITS)
1838 || (options[cards_found] > sizeof(options_mapping)))
1839 lp->options = PCNET32_PORT_ASEL;
1840 else
1841 lp->options = options_mapping[options[cards_found]];
1842 lp->mii_if.dev = dev;
1843 lp->mii_if.mdio_read = mdio_read;
1844 lp->mii_if.mdio_write = mdio_write;
1845
1846 /* napi.weight is used in both the napi and non-napi cases */
1847 lp->napi.weight = lp->rx_ring_size / 2;
1848
1849 netif_napi_add(dev, &lp->napi, pcnet32_poll, lp->rx_ring_size / 2);
1850
1851 if (fdx && !(lp->options & PCNET32_PORT_ASEL) &&
1852 ((cards_found >= MAX_UNITS) || full_duplex[cards_found]))
1853 lp->options |= PCNET32_PORT_FD;
1854
1855 if (!a) {
1856 if (pcnet32_debug & NETIF_MSG_PROBE)
1857 printk(KERN_ERR PFX "No access methods\n");
1858 ret = -ENODEV;
1859 goto err_free_consistent;
1860 }
1861 lp->a = *a;
1862
1863 /* prior to register_netdev, dev->name is not yet correct */
1864 if (pcnet32_alloc_ring(dev, pci_name(lp->pci_dev))) {
1865 ret = -ENOMEM;
1866 goto err_free_ring;
1867 }
1868 /* detect special T1/E1 WAN card by checking for MAC address */
1869 if (dev->dev_addr[0] == 0x00 && dev->dev_addr[1] == 0xe0
1870 && dev->dev_addr[2] == 0x75)
1871 lp->options = PCNET32_PORT_FD | PCNET32_PORT_GPSI;
1872
1873 lp->init_block->mode = cpu_to_le16(0x0003); /* Disable Rx and Tx. */
1874 lp->init_block->tlen_rlen =
1875 cpu_to_le16(lp->tx_len_bits | lp->rx_len_bits);
1876 for (i = 0; i < 6; i++)
1877 lp->init_block->phys_addr[i] = dev->dev_addr[i];
1878 lp->init_block->filter[0] = 0x00000000;
1879 lp->init_block->filter[1] = 0x00000000;
1880 lp->init_block->rx_ring = cpu_to_le32(lp->rx_ring_dma_addr);
1881 lp->init_block->tx_ring = cpu_to_le32(lp->tx_ring_dma_addr);
1882
1883 /* switch pcnet32 to 32bit mode */
1884 a->write_bcr(ioaddr, 20, 2);
1885
1886 a->write_csr(ioaddr, 1, (lp->init_dma_addr & 0xffff));
1887 a->write_csr(ioaddr, 2, (lp->init_dma_addr >> 16));
1888
1889 if (pdev) { /* use the IRQ provided by PCI */
1890 dev->irq = pdev->irq;
1891 if (pcnet32_debug & NETIF_MSG_PROBE)
1892 printk(" assigned IRQ %d.\n", dev->irq);
1893 } else {
1894 unsigned long irq_mask = probe_irq_on();
1895
1896 /*
1897 * To auto-IRQ we enable the initialization-done and DMA error
1898 * interrupts. For ISA boards we get a DMA error, but VLB and PCI
1899 * boards will work.
1900 */
1901 /* Trigger an initialization just for the interrupt. */
1902 a->write_csr(ioaddr, CSR0, CSR0_INTEN | CSR0_INIT);
1903 mdelay(1);
1904
1905 dev->irq = probe_irq_off(irq_mask);
1906 if (!dev->irq) {
1907 if (pcnet32_debug & NETIF_MSG_PROBE)
1908 printk(", failed to detect IRQ line.\n");
1909 ret = -ENODEV;
1910 goto err_free_ring;
1911 }
1912 if (pcnet32_debug & NETIF_MSG_PROBE)
1913 printk(", probed IRQ %d.\n", dev->irq);
1914 }
1915
1916 /* Set the mii phy_id so that we can query the link state */
1917 if (lp->mii) {
1918 /* lp->phycount and lp->phymask are set to 0 by memset above */
1919
1920 lp->mii_if.phy_id = ((lp->a.read_bcr(ioaddr, 33)) >> 5) & 0x1f;
1921 /* scan for PHYs */
1922 for (i = 0; i < PCNET32_MAX_PHYS; i++) {
1923 unsigned short id1, id2;
1924
1925 id1 = mdio_read(dev, i, MII_PHYSID1);
1926 if (id1 == 0xffff)
1927 continue;
1928 id2 = mdio_read(dev, i, MII_PHYSID2);
1929 if (id2 == 0xffff)
1930 continue;
1931 if (i == 31 && ((chip_version + 1) & 0xfffe) == 0x2624)
1932 continue; /* 79C971 & 79C972 have phantom phy at id 31 */
1933 lp->phycount++;
1934 lp->phymask |= (1 << i);
1935 lp->mii_if.phy_id = i;
1936 if (pcnet32_debug & NETIF_MSG_PROBE)
1937 printk(KERN_INFO PFX
1938 "Found PHY %04x:%04x at address %d.\n",
1939 id1, id2, i);
1940 }
1941 lp->a.write_bcr(ioaddr, 33, (lp->mii_if.phy_id) << 5);
1942 if (lp->phycount > 1) {
1943 lp->options |= PCNET32_PORT_MII;
1944 }
1945 }
1946
1947 init_timer(&lp->watchdog_timer);
1948 lp->watchdog_timer.data = (unsigned long)dev;
1949 lp->watchdog_timer.function = (void *)&pcnet32_watchdog;
1950
1951 /* The PCNET32-specific entries in the device structure. */
1952 dev->netdev_ops = &pcnet32_netdev_ops;
1953 dev->ethtool_ops = &pcnet32_ethtool_ops;
1954 dev->watchdog_timeo = (5 * HZ);
1955
1956 /* Fill in the generic fields of the device structure. */
1957 if (register_netdev(dev))
1958 goto err_free_ring;
1959
1960 if (pdev) {
1961 pci_set_drvdata(pdev, dev);
1962 } else {
1963 lp->next = pcnet32_dev;
1964 pcnet32_dev = dev;
1965 }
1966
1967 if (pcnet32_debug & NETIF_MSG_PROBE)
1968 printk(KERN_INFO "%s: registered as %s\n", dev->name, lp->name);
1969 cards_found++;
1970
1971 /* enable LED writes */
1972 a->write_bcr(ioaddr, 2, a->read_bcr(ioaddr, 2) | 0x1000);
1973
1974 return 0;
1975
1976 err_free_ring:
1977 pcnet32_free_ring(dev);
1978 err_free_consistent:
1979 pci_free_consistent(lp->pci_dev, sizeof(*lp->init_block),
1980 lp->init_block, lp->init_dma_addr);
1981 err_free_netdev:
1982 free_netdev(dev);
1983 err_release_region:
1984 release_region(ioaddr, PCNET32_TOTAL_SIZE);
1985 return ret;
1986 }
1987
1988 /* if any allocation fails, caller must also call pcnet32_free_ring */
1989 static int pcnet32_alloc_ring(struct net_device *dev, const char *name)
1990 {
1991 struct pcnet32_private *lp = netdev_priv(dev);
1992
1993 lp->tx_ring = pci_alloc_consistent(lp->pci_dev,
1994 sizeof(struct pcnet32_tx_head) *
1995 lp->tx_ring_size,
1996 &lp->tx_ring_dma_addr);
1997 if (lp->tx_ring == NULL) {
1998 if (netif_msg_drv(lp))
1999 printk("\n" KERN_ERR PFX
2000 "%s: Consistent memory allocation failed.\n",
2001 name);
2002 return -ENOMEM;
2003 }
2004
2005 lp->rx_ring = pci_alloc_consistent(lp->pci_dev,
2006 sizeof(struct pcnet32_rx_head) *
2007 lp->rx_ring_size,
2008 &lp->rx_ring_dma_addr);
2009 if (lp->rx_ring == NULL) {
2010 if (netif_msg_drv(lp))
2011 printk("\n" KERN_ERR PFX
2012 "%s: Consistent memory allocation failed.\n",
2013 name);
2014 return -ENOMEM;
2015 }
2016
2017 lp->tx_dma_addr = kcalloc(lp->tx_ring_size, sizeof(dma_addr_t),
2018 GFP_ATOMIC);
2019 if (!lp->tx_dma_addr) {
2020 if (netif_msg_drv(lp))
2021 printk("\n" KERN_ERR PFX
2022 "%s: Memory allocation failed.\n", name);
2023 return -ENOMEM;
2024 }
2025
2026 lp->rx_dma_addr = kcalloc(lp->rx_ring_size, sizeof(dma_addr_t),
2027 GFP_ATOMIC);
2028 if (!lp->rx_dma_addr) {
2029 if (netif_msg_drv(lp))
2030 printk("\n" KERN_ERR PFX
2031 "%s: Memory allocation failed.\n", name);
2032 return -ENOMEM;
2033 }
2034
2035 lp->tx_skbuff = kcalloc(lp->tx_ring_size, sizeof(struct sk_buff *),
2036 GFP_ATOMIC);
2037 if (!lp->tx_skbuff) {
2038 if (netif_msg_drv(lp))
2039 printk("\n" KERN_ERR PFX
2040 "%s: Memory allocation failed.\n", name);
2041 return -ENOMEM;
2042 }
2043
2044 lp->rx_skbuff = kcalloc(lp->rx_ring_size, sizeof(struct sk_buff *),
2045 GFP_ATOMIC);
2046 if (!lp->rx_skbuff) {
2047 if (netif_msg_drv(lp))
2048 printk("\n" KERN_ERR PFX
2049 "%s: Memory allocation failed.\n", name);
2050 return -ENOMEM;
2051 }
2052
2053 return 0;
2054 }
2055
2056 static void pcnet32_free_ring(struct net_device *dev)
2057 {
2058 struct pcnet32_private *lp = netdev_priv(dev);
2059
2060 kfree(lp->tx_skbuff);
2061 lp->tx_skbuff = NULL;
2062
2063 kfree(lp->rx_skbuff);
2064 lp->rx_skbuff = NULL;
2065
2066 kfree(lp->tx_dma_addr);
2067 lp->tx_dma_addr = NULL;
2068
2069 kfree(lp->rx_dma_addr);
2070 lp->rx_dma_addr = NULL;
2071
2072 if (lp->tx_ring) {
2073 pci_free_consistent(lp->pci_dev,
2074 sizeof(struct pcnet32_tx_head) *
2075 lp->tx_ring_size, lp->tx_ring,
2076 lp->tx_ring_dma_addr);
2077 lp->tx_ring = NULL;
2078 }
2079
2080 if (lp->rx_ring) {
2081 pci_free_consistent(lp->pci_dev,
2082 sizeof(struct pcnet32_rx_head) *
2083 lp->rx_ring_size, lp->rx_ring,
2084 lp->rx_ring_dma_addr);
2085 lp->rx_ring = NULL;
2086 }
2087 }
2088
2089 static int pcnet32_open(struct net_device *dev)
2090 {
2091 struct pcnet32_private *lp = netdev_priv(dev);
2092 unsigned long ioaddr = dev->base_addr;
2093 u16 val;
2094 int i;
2095 int rc;
2096 unsigned long flags;
2097
2098 if (request_irq(dev->irq, &pcnet32_interrupt,
2099 lp->shared_irq ? IRQF_SHARED : 0, dev->name,
2100 (void *)dev)) {
2101 return -EAGAIN;
2102 }
2103
2104 spin_lock_irqsave(&lp->lock, flags);
2105 /* Check for a valid station address */
2106 if (!is_valid_ether_addr(dev->dev_addr)) {
2107 rc = -EINVAL;
2108 goto err_free_irq;
2109 }
2110
2111 /* Reset the PCNET32 */
2112 lp->a.reset(ioaddr);
2113
2114 /* switch pcnet32 to 32bit mode */
2115 lp->a.write_bcr(ioaddr, 20, 2);
2116
2117 if (netif_msg_ifup(lp))
2118 printk(KERN_DEBUG
2119 "%s: pcnet32_open() irq %d tx/rx rings %#x/%#x init %#x.\n",
2120 dev->name, dev->irq, (u32) (lp->tx_ring_dma_addr),
2121 (u32) (lp->rx_ring_dma_addr),
2122 (u32) (lp->init_dma_addr));
2123
2124 /* set/reset autoselect bit */
2125 val = lp->a.read_bcr(ioaddr, 2) & ~2;
2126 if (lp->options & PCNET32_PORT_ASEL)
2127 val |= 2;
2128 lp->a.write_bcr(ioaddr, 2, val);
2129
2130 /* handle full duplex setting */
2131 if (lp->mii_if.full_duplex) {
2132 val = lp->a.read_bcr(ioaddr, 9) & ~3;
2133 if (lp->options & PCNET32_PORT_FD) {
2134 val |= 1;
2135 if (lp->options == (PCNET32_PORT_FD | PCNET32_PORT_AUI))
2136 val |= 2;
2137 } else if (lp->options & PCNET32_PORT_ASEL) {
2138 /* workaround of xSeries250, turn on for 79C975 only */
2139 if (lp->chip_version == 0x2627)
2140 val |= 3;
2141 }
2142 lp->a.write_bcr(ioaddr, 9, val);
2143 }
2144
2145 /* set/reset GPSI bit in test register */
2146 val = lp->a.read_csr(ioaddr, 124) & ~0x10;
2147 if ((lp->options & PCNET32_PORT_PORTSEL) == PCNET32_PORT_GPSI)
2148 val |= 0x10;
2149 lp->a.write_csr(ioaddr, 124, val);
2150
2151 /* Allied Telesyn AT 2700/2701 FX are 100Mbit only and do not negotiate */
2152 if (lp->pci_dev->subsystem_vendor == PCI_VENDOR_ID_AT &&
2153 (lp->pci_dev->subsystem_device == PCI_SUBDEVICE_ID_AT_2700FX ||
2154 lp->pci_dev->subsystem_device == PCI_SUBDEVICE_ID_AT_2701FX)) {
2155 if (lp->options & PCNET32_PORT_ASEL) {
2156 lp->options = PCNET32_PORT_FD | PCNET32_PORT_100;
2157 if (netif_msg_link(lp))
2158 printk(KERN_DEBUG
2159 "%s: Setting 100Mb-Full Duplex.\n",
2160 dev->name);
2161 }
2162 }
2163 if (lp->phycount < 2) {
2164 /*
2165 * 24 Jun 2004 according AMD, in order to change the PHY,
2166 * DANAS (or DISPM for 79C976) must be set; then select the speed,
2167 * duplex, and/or enable auto negotiation, and clear DANAS
2168 */
2169 if (lp->mii && !(lp->options & PCNET32_PORT_ASEL)) {
2170 lp->a.write_bcr(ioaddr, 32,
2171 lp->a.read_bcr(ioaddr, 32) | 0x0080);
2172 /* disable Auto Negotiation, set 10Mpbs, HD */
2173 val = lp->a.read_bcr(ioaddr, 32) & ~0xb8;
2174 if (lp->options & PCNET32_PORT_FD)
2175 val |= 0x10;
2176 if (lp->options & PCNET32_PORT_100)
2177 val |= 0x08;
2178 lp->a.write_bcr(ioaddr, 32, val);
2179 } else {
2180 if (lp->options & PCNET32_PORT_ASEL) {
2181 lp->a.write_bcr(ioaddr, 32,
2182 lp->a.read_bcr(ioaddr,
2183 32) | 0x0080);
2184 /* enable auto negotiate, setup, disable fd */
2185 val = lp->a.read_bcr(ioaddr, 32) & ~0x98;
2186 val |= 0x20;
2187 lp->a.write_bcr(ioaddr, 32, val);
2188 }
2189 }
2190 } else {
2191 int first_phy = -1;
2192 u16 bmcr;
2193 u32 bcr9;
2194 struct ethtool_cmd ecmd;
2195
2196 /*
2197 * There is really no good other way to handle multiple PHYs
2198 * other than turning off all automatics
2199 */
2200 val = lp->a.read_bcr(ioaddr, 2);
2201 lp->a.write_bcr(ioaddr, 2, val & ~2);
2202 val = lp->a.read_bcr(ioaddr, 32);
2203 lp->a.write_bcr(ioaddr, 32, val & ~(1 << 7)); /* stop MII manager */
2204
2205 if (!(lp->options & PCNET32_PORT_ASEL)) {
2206 /* setup ecmd */
2207 ecmd.port = PORT_MII;
2208 ecmd.transceiver = XCVR_INTERNAL;
2209 ecmd.autoneg = AUTONEG_DISABLE;
2210 ecmd.speed =
2211 lp->
2212 options & PCNET32_PORT_100 ? SPEED_100 : SPEED_10;
2213 bcr9 = lp->a.read_bcr(ioaddr, 9);
2214
2215 if (lp->options & PCNET32_PORT_FD) {
2216 ecmd.duplex = DUPLEX_FULL;
2217 bcr9 |= (1 << 0);
2218 } else {
2219 ecmd.duplex = DUPLEX_HALF;
2220 bcr9 |= ~(1 << 0);
2221 }
2222 lp->a.write_bcr(ioaddr, 9, bcr9);
2223 }
2224
2225 for (i = 0; i < PCNET32_MAX_PHYS; i++) {
2226 if (lp->phymask & (1 << i)) {
2227 /* isolate all but the first PHY */
2228 bmcr = mdio_read(dev, i, MII_BMCR);
2229 if (first_phy == -1) {
2230 first_phy = i;
2231 mdio_write(dev, i, MII_BMCR,
2232 bmcr & ~BMCR_ISOLATE);
2233 } else {
2234 mdio_write(dev, i, MII_BMCR,
2235 bmcr | BMCR_ISOLATE);
2236 }
2237 /* use mii_ethtool_sset to setup PHY */
2238 lp->mii_if.phy_id = i;
2239 ecmd.phy_address = i;
2240 if (lp->options & PCNET32_PORT_ASEL) {
2241 mii_ethtool_gset(&lp->mii_if, &ecmd);
2242 ecmd.autoneg = AUTONEG_ENABLE;
2243 }
2244 mii_ethtool_sset(&lp->mii_if, &ecmd);
2245 }
2246 }
2247 lp->mii_if.phy_id = first_phy;
2248 if (netif_msg_link(lp))
2249 printk(KERN_INFO "%s: Using PHY number %d.\n",
2250 dev->name, first_phy);
2251 }
2252
2253 #ifdef DO_DXSUFLO
2254 if (lp->dxsuflo) { /* Disable transmit stop on underflow */
2255 val = lp->a.read_csr(ioaddr, CSR3);
2256 val |= 0x40;
2257 lp->a.write_csr(ioaddr, CSR3, val);
2258 }
2259 #endif
2260
2261 lp->init_block->mode =
2262 cpu_to_le16((lp->options & PCNET32_PORT_PORTSEL) << 7);
2263 pcnet32_load_multicast(dev);
2264
2265 if (pcnet32_init_ring(dev)) {
2266 rc = -ENOMEM;
2267 goto err_free_ring;
2268 }
2269
2270 napi_enable(&lp->napi);
2271
2272 /* Re-initialize the PCNET32, and start it when done. */
2273 lp->a.write_csr(ioaddr, 1, (lp->init_dma_addr & 0xffff));
2274 lp->a.write_csr(ioaddr, 2, (lp->init_dma_addr >> 16));
2275
2276 lp->a.write_csr(ioaddr, CSR4, 0x0915); /* auto tx pad */
2277 lp->a.write_csr(ioaddr, CSR0, CSR0_INIT);
2278
2279 netif_start_queue(dev);
2280
2281 if (lp->chip_version >= PCNET32_79C970A) {
2282 /* Print the link status and start the watchdog */
2283 pcnet32_check_media(dev, 1);
2284 mod_timer(&lp->watchdog_timer, PCNET32_WATCHDOG_TIMEOUT);
2285 }
2286
2287 i = 0;
2288 while (i++ < 100)
2289 if (lp->a.read_csr(ioaddr, CSR0) & CSR0_IDON)
2290 break;
2291 /*
2292 * We used to clear the InitDone bit, 0x0100, here but Mark Stockton
2293 * reports that doing so triggers a bug in the '974.
2294 */
2295 lp->a.write_csr(ioaddr, CSR0, CSR0_NORMAL);
2296
2297 if (netif_msg_ifup(lp))
2298 printk(KERN_DEBUG
2299 "%s: pcnet32 open after %d ticks, init block %#x csr0 %4.4x.\n",
2300 dev->name, i,
2301 (u32) (lp->init_dma_addr),
2302 lp->a.read_csr(ioaddr, CSR0));
2303
2304 spin_unlock_irqrestore(&lp->lock, flags);
2305
2306 return 0; /* Always succeed */
2307
2308 err_free_ring:
2309 /* free any allocated skbuffs */
2310 pcnet32_purge_rx_ring(dev);
2311
2312 /*
2313 * Switch back to 16bit mode to avoid problems with dumb
2314 * DOS packet driver after a warm reboot
2315 */
2316 lp->a.write_bcr(ioaddr, 20, 4);
2317
2318 err_free_irq:
2319 spin_unlock_irqrestore(&lp->lock, flags);
2320 free_irq(dev->irq, dev);
2321 return rc;
2322 }
2323
2324 /*
2325 * The LANCE has been halted for one reason or another (busmaster memory
2326 * arbitration error, Tx FIFO underflow, driver stopped it to reconfigure,
2327 * etc.). Modern LANCE variants always reload their ring-buffer
2328 * configuration when restarted, so we must reinitialize our ring
2329 * context before restarting. As part of this reinitialization,
2330 * find all packets still on the Tx ring and pretend that they had been
2331 * sent (in effect, drop the packets on the floor) - the higher-level
2332 * protocols will time out and retransmit. It'd be better to shuffle
2333 * these skbs to a temp list and then actually re-Tx them after
2334 * restarting the chip, but I'm too lazy to do so right now. dplatt@3do.com
2335 */
2336
2337 static void pcnet32_purge_tx_ring(struct net_device *dev)
2338 {
2339 struct pcnet32_private *lp = netdev_priv(dev);
2340 int i;
2341
2342 for (i = 0; i < lp->tx_ring_size; i++) {
2343 lp->tx_ring[i].status = 0; /* CPU owns buffer */
2344 wmb(); /* Make sure adapter sees owner change */
2345 if (lp->tx_skbuff[i]) {
2346 pci_unmap_single(lp->pci_dev, lp->tx_dma_addr[i],
2347 lp->tx_skbuff[i]->len,
2348 PCI_DMA_TODEVICE);
2349 dev_kfree_skb_any(lp->tx_skbuff[i]);
2350 }
2351 lp->tx_skbuff[i] = NULL;
2352 lp->tx_dma_addr[i] = 0;
2353 }
2354 }
2355
2356 /* Initialize the PCNET32 Rx and Tx rings. */
2357 static int pcnet32_init_ring(struct net_device *dev)
2358 {
2359 struct pcnet32_private *lp = netdev_priv(dev);
2360 int i;
2361
2362 lp->tx_full = 0;
2363 lp->cur_rx = lp->cur_tx = 0;
2364 lp->dirty_rx = lp->dirty_tx = 0;
2365
2366 for (i = 0; i < lp->rx_ring_size; i++) {
2367 struct sk_buff *rx_skbuff = lp->rx_skbuff[i];
2368 if (rx_skbuff == NULL) {
2369 if (!
2370 (rx_skbuff = lp->rx_skbuff[i] =
2371 dev_alloc_skb(PKT_BUF_SKB))) {
2372 /* there is not much, we can do at this point */
2373 if (netif_msg_drv(lp))
2374 printk(KERN_ERR
2375 "%s: pcnet32_init_ring dev_alloc_skb failed.\n",
2376 dev->name);
2377 return -1;
2378 }
2379 skb_reserve(rx_skbuff, NET_IP_ALIGN);
2380 }
2381
2382 rmb();
2383 if (lp->rx_dma_addr[i] == 0)
2384 lp->rx_dma_addr[i] =
2385 pci_map_single(lp->pci_dev, rx_skbuff->data,
2386 PKT_BUF_SIZE, PCI_DMA_FROMDEVICE);
2387 lp->rx_ring[i].base = cpu_to_le32(lp->rx_dma_addr[i]);
2388 lp->rx_ring[i].buf_length = cpu_to_le16(NEG_BUF_SIZE);
2389 wmb(); /* Make sure owner changes after all others are visible */
2390 lp->rx_ring[i].status = cpu_to_le16(0x8000);
2391 }
2392 /* The Tx buffer address is filled in as needed, but we do need to clear
2393 * the upper ownership bit. */
2394 for (i = 0; i < lp->tx_ring_size; i++) {
2395 lp->tx_ring[i].status = 0; /* CPU owns buffer */
2396 wmb(); /* Make sure adapter sees owner change */
2397 lp->tx_ring[i].base = 0;
2398 lp->tx_dma_addr[i] = 0;
2399 }
2400
2401 lp->init_block->tlen_rlen =
2402 cpu_to_le16(lp->tx_len_bits | lp->rx_len_bits);
2403 for (i = 0; i < 6; i++)
2404 lp->init_block->phys_addr[i] = dev->dev_addr[i];
2405 lp->init_block->rx_ring = cpu_to_le32(lp->rx_ring_dma_addr);
2406 lp->init_block->tx_ring = cpu_to_le32(lp->tx_ring_dma_addr);
2407 wmb(); /* Make sure all changes are visible */
2408 return 0;
2409 }
2410
2411 /* the pcnet32 has been issued a stop or reset. Wait for the stop bit
2412 * then flush the pending transmit operations, re-initialize the ring,
2413 * and tell the chip to initialize.
2414 */
2415 static void pcnet32_restart(struct net_device *dev, unsigned int csr0_bits)
2416 {
2417 struct pcnet32_private *lp = netdev_priv(dev);
2418 unsigned long ioaddr = dev->base_addr;
2419 int i;
2420
2421 /* wait for stop */
2422 for (i = 0; i < 100; i++)
2423 if (lp->a.read_csr(ioaddr, CSR0) & CSR0_STOP)
2424 break;
2425
2426 if (i >= 100 && netif_msg_drv(lp))
2427 printk(KERN_ERR
2428 "%s: pcnet32_restart timed out waiting for stop.\n",
2429 dev->name);
2430
2431 pcnet32_purge_tx_ring(dev);
2432 if (pcnet32_init_ring(dev))
2433 return;
2434
2435 /* ReInit Ring */
2436 lp->a.write_csr(ioaddr, CSR0, CSR0_INIT);
2437 i = 0;
2438 while (i++ < 1000)
2439 if (lp->a.read_csr(ioaddr, CSR0) & CSR0_IDON)
2440 break;
2441
2442 lp->a.write_csr(ioaddr, CSR0, csr0_bits);
2443 }
2444
2445 static void pcnet32_tx_timeout(struct net_device *dev)
2446 {
2447 struct pcnet32_private *lp = netdev_priv(dev);
2448 unsigned long ioaddr = dev->base_addr, flags;
2449
2450 spin_lock_irqsave(&lp->lock, flags);
2451 /* Transmitter timeout, serious problems. */
2452 if (pcnet32_debug & NETIF_MSG_DRV)
2453 printk(KERN_ERR
2454 "%s: transmit timed out, status %4.4x, resetting.\n",
2455 dev->name, lp->a.read_csr(ioaddr, CSR0));
2456 lp->a.write_csr(ioaddr, CSR0, CSR0_STOP);
2457 dev->stats.tx_errors++;
2458 if (netif_msg_tx_err(lp)) {
2459 int i;
2460 printk(KERN_DEBUG
2461 " Ring data dump: dirty_tx %d cur_tx %d%s cur_rx %d.",
2462 lp->dirty_tx, lp->cur_tx, lp->tx_full ? " (full)" : "",
2463 lp->cur_rx);
2464 for (i = 0; i < lp->rx_ring_size; i++)
2465 printk("%s %08x %04x %08x %04x", i & 1 ? "" : "\n ",
2466 le32_to_cpu(lp->rx_ring[i].base),
2467 (-le16_to_cpu(lp->rx_ring[i].buf_length)) &
2468 0xffff, le32_to_cpu(lp->rx_ring[i].msg_length),
2469 le16_to_cpu(lp->rx_ring[i].status));
2470 for (i = 0; i < lp->tx_ring_size; i++)
2471 printk("%s %08x %04x %08x %04x", i & 1 ? "" : "\n ",
2472 le32_to_cpu(lp->tx_ring[i].base),
2473 (-le16_to_cpu(lp->tx_ring[i].length)) & 0xffff,
2474 le32_to_cpu(lp->tx_ring[i].misc),
2475 le16_to_cpu(lp->tx_ring[i].status));
2476 printk("\n");
2477 }
2478 pcnet32_restart(dev, CSR0_NORMAL);
2479
2480 dev->trans_start = jiffies;
2481 netif_wake_queue(dev);
2482
2483 spin_unlock_irqrestore(&lp->lock, flags);
2484 }
2485
2486 static int pcnet32_start_xmit(struct sk_buff *skb, struct net_device *dev)
2487 {
2488 struct pcnet32_private *lp = netdev_priv(dev);
2489 unsigned long ioaddr = dev->base_addr;
2490 u16 status;
2491 int entry;
2492 unsigned long flags;
2493
2494 spin_lock_irqsave(&lp->lock, flags);
2495
2496 if (netif_msg_tx_queued(lp)) {
2497 printk(KERN_DEBUG
2498 "%s: pcnet32_start_xmit() called, csr0 %4.4x.\n",
2499 dev->name, lp->a.read_csr(ioaddr, CSR0));
2500 }
2501
2502 /* Default status -- will not enable Successful-TxDone
2503 * interrupt when that option is available to us.
2504 */
2505 status = 0x8300;
2506
2507 /* Fill in a Tx ring entry */
2508
2509 /* Mask to ring buffer boundary. */
2510 entry = lp->cur_tx & lp->tx_mod_mask;
2511
2512 /* Caution: the write order is important here, set the status
2513 * with the "ownership" bits last. */
2514
2515 lp->tx_ring[entry].length = cpu_to_le16(-skb->len);
2516
2517 lp->tx_ring[entry].misc = 0x00000000;
2518
2519 lp->tx_skbuff[entry] = skb;
2520 lp->tx_dma_addr[entry] =
2521 pci_map_single(lp->pci_dev, skb->data, skb->len, PCI_DMA_TODEVICE);
2522 lp->tx_ring[entry].base = cpu_to_le32(lp->tx_dma_addr[entry]);
2523 wmb(); /* Make sure owner changes after all others are visible */
2524 lp->tx_ring[entry].status = cpu_to_le16(status);
2525
2526 lp->cur_tx++;
2527 dev->stats.tx_bytes += skb->len;
2528
2529 /* Trigger an immediate send poll. */
2530 lp->a.write_csr(ioaddr, CSR0, CSR0_INTEN | CSR0_TXPOLL);
2531
2532 dev->trans_start = jiffies;
2533
2534 if (lp->tx_ring[(entry + 1) & lp->tx_mod_mask].base != 0) {
2535 lp->tx_full = 1;
2536 netif_stop_queue(dev);
2537 }
2538 spin_unlock_irqrestore(&lp->lock, flags);
2539 return 0;
2540 }
2541
2542 /* The PCNET32 interrupt handler. */
2543 static irqreturn_t
2544 pcnet32_interrupt(int irq, void *dev_id)
2545 {
2546 struct net_device *dev = dev_id;
2547 struct pcnet32_private *lp;
2548 unsigned long ioaddr;
2549 u16 csr0;
2550 int boguscnt = max_interrupt_work;
2551
2552 ioaddr = dev->base_addr;
2553 lp = netdev_priv(dev);
2554
2555 spin_lock(&lp->lock);
2556
2557 csr0 = lp->a.read_csr(ioaddr, CSR0);
2558 while ((csr0 & 0x8f00) && --boguscnt >= 0) {
2559 if (csr0 == 0xffff) {
2560 break; /* PCMCIA remove happened */
2561 }
2562 /* Acknowledge all of the current interrupt sources ASAP. */
2563 lp->a.write_csr(ioaddr, CSR0, csr0 & ~0x004f);
2564
2565 if (netif_msg_intr(lp))
2566 printk(KERN_DEBUG
2567 "%s: interrupt csr0=%#2.2x new csr=%#2.2x.\n",
2568 dev->name, csr0, lp->a.read_csr(ioaddr, CSR0));
2569
2570 /* Log misc errors. */
2571 if (csr0 & 0x4000)
2572 dev->stats.tx_errors++; /* Tx babble. */
2573 if (csr0 & 0x1000) {
2574 /*
2575 * This happens when our receive ring is full. This
2576 * shouldn't be a problem as we will see normal rx
2577 * interrupts for the frames in the receive ring. But
2578 * there are some PCI chipsets (I can reproduce this
2579 * on SP3G with Intel saturn chipset) which have
2580 * sometimes problems and will fill up the receive
2581 * ring with error descriptors. In this situation we
2582 * don't get a rx interrupt, but a missed frame
2583 * interrupt sooner or later.
2584 */
2585 dev->stats.rx_errors++; /* Missed a Rx frame. */
2586 }
2587 if (csr0 & 0x0800) {
2588 if (netif_msg_drv(lp))
2589 printk(KERN_ERR
2590 "%s: Bus master arbitration failure, status %4.4x.\n",
2591 dev->name, csr0);
2592 /* unlike for the lance, there is no restart needed */
2593 }
2594 if (napi_schedule_prep(&lp->napi)) {
2595 u16 val;
2596 /* set interrupt masks */
2597 val = lp->a.read_csr(ioaddr, CSR3);
2598 val |= 0x5f00;
2599 lp->a.write_csr(ioaddr, CSR3, val);
2600
2601 __napi_schedule(&lp->napi);
2602 break;
2603 }
2604 csr0 = lp->a.read_csr(ioaddr, CSR0);
2605 }
2606
2607 if (netif_msg_intr(lp))
2608 printk(KERN_DEBUG "%s: exiting interrupt, csr0=%#4.4x.\n",
2609 dev->name, lp->a.read_csr(ioaddr, CSR0));
2610
2611 spin_unlock(&lp->lock);
2612
2613 return IRQ_HANDLED;
2614 }
2615
2616 static int pcnet32_close(struct net_device *dev)
2617 {
2618 unsigned long ioaddr = dev->base_addr;
2619 struct pcnet32_private *lp = netdev_priv(dev);
2620 unsigned long flags;
2621
2622 del_timer_sync(&lp->watchdog_timer);
2623
2624 netif_stop_queue(dev);
2625 napi_disable(&lp->napi);
2626
2627 spin_lock_irqsave(&lp->lock, flags);
2628
2629 dev->stats.rx_missed_errors = lp->a.read_csr(ioaddr, 112);
2630
2631 if (netif_msg_ifdown(lp))
2632 printk(KERN_DEBUG
2633 "%s: Shutting down ethercard, status was %2.2x.\n",
2634 dev->name, lp->a.read_csr(ioaddr, CSR0));
2635
2636 /* We stop the PCNET32 here -- it occasionally polls memory if we don't. */
2637 lp->a.write_csr(ioaddr, CSR0, CSR0_STOP);
2638
2639 /*
2640 * Switch back to 16bit mode to avoid problems with dumb
2641 * DOS packet driver after a warm reboot
2642 */
2643 lp->a.write_bcr(ioaddr, 20, 4);
2644
2645 spin_unlock_irqrestore(&lp->lock, flags);
2646
2647 free_irq(dev->irq, dev);
2648
2649 spin_lock_irqsave(&lp->lock, flags);
2650
2651 pcnet32_purge_rx_ring(dev);
2652 pcnet32_purge_tx_ring(dev);
2653
2654 spin_unlock_irqrestore(&lp->lock, flags);
2655
2656 return 0;
2657 }
2658
2659 static struct net_device_stats *pcnet32_get_stats(struct net_device *dev)
2660 {
2661 struct pcnet32_private *lp = netdev_priv(dev);
2662 unsigned long ioaddr = dev->base_addr;
2663 unsigned long flags;
2664
2665 spin_lock_irqsave(&lp->lock, flags);
2666 dev->stats.rx_missed_errors = lp->a.read_csr(ioaddr, 112);
2667 spin_unlock_irqrestore(&lp->lock, flags);
2668
2669 return &dev->stats;
2670 }
2671
2672 /* taken from the sunlance driver, which it took from the depca driver */
2673 static void pcnet32_load_multicast(struct net_device *dev)
2674 {
2675 struct pcnet32_private *lp = netdev_priv(dev);
2676 volatile struct pcnet32_init_block *ib = lp->init_block;
2677 volatile __le16 *mcast_table = (__le16 *)ib->filter;
2678 struct dev_mc_list *dmi = dev->mc_list;
2679 unsigned long ioaddr = dev->base_addr;
2680 char *addrs;
2681 int i;
2682 u32 crc;
2683
2684 /* set all multicast bits */
2685 if (dev->flags & IFF_ALLMULTI) {
2686 ib->filter[0] = cpu_to_le32(~0U);
2687 ib->filter[1] = cpu_to_le32(~0U);
2688 lp->a.write_csr(ioaddr, PCNET32_MC_FILTER, 0xffff);
2689 lp->a.write_csr(ioaddr, PCNET32_MC_FILTER+1, 0xffff);
2690 lp->a.write_csr(ioaddr, PCNET32_MC_FILTER+2, 0xffff);
2691 lp->a.write_csr(ioaddr, PCNET32_MC_FILTER+3, 0xffff);
2692 return;
2693 }
2694 /* clear the multicast filter */
2695 ib->filter[0] = 0;
2696 ib->filter[1] = 0;
2697
2698 /* Add addresses */
2699 for (i = 0; i < dev->mc_count; i++) {
2700 addrs = dmi->dmi_addr;
2701 dmi = dmi->next;
2702
2703 /* multicast address? */
2704 if (!(*addrs & 1))
2705 continue;
2706
2707 crc = ether_crc_le(6, addrs);
2708 crc = crc >> 26;
2709 mcast_table[crc >> 4] |= cpu_to_le16(1 << (crc & 0xf));
2710 }
2711 for (i = 0; i < 4; i++)
2712 lp->a.write_csr(ioaddr, PCNET32_MC_FILTER + i,
2713 le16_to_cpu(mcast_table[i]));
2714 return;
2715 }
2716
2717 /*
2718 * Set or clear the multicast filter for this adaptor.
2719 */
2720 static void pcnet32_set_multicast_list(struct net_device *dev)
2721 {
2722 unsigned long ioaddr = dev->base_addr, flags;
2723 struct pcnet32_private *lp = netdev_priv(dev);
2724 int csr15, suspended;
2725
2726 spin_lock_irqsave(&lp->lock, flags);
2727 suspended = pcnet32_suspend(dev, &flags, 0);
2728 csr15 = lp->a.read_csr(ioaddr, CSR15);
2729 if (dev->flags & IFF_PROMISC) {
2730 /* Log any net taps. */
2731 if (netif_msg_hw(lp))
2732 printk(KERN_INFO "%s: Promiscuous mode enabled.\n",
2733 dev->name);
2734 lp->init_block->mode =
2735 cpu_to_le16(0x8000 | (lp->options & PCNET32_PORT_PORTSEL) <<
2736 7);
2737 lp->a.write_csr(ioaddr, CSR15, csr15 | 0x8000);
2738 } else {
2739 lp->init_block->mode =
2740 cpu_to_le16((lp->options & PCNET32_PORT_PORTSEL) << 7);
2741 lp->a.write_csr(ioaddr, CSR15, csr15 & 0x7fff);
2742 pcnet32_load_multicast(dev);
2743 }
2744
2745 if (suspended) {
2746 int csr5;
2747 /* clear SUSPEND (SPND) - CSR5 bit 0 */
2748 csr5 = lp->a.read_csr(ioaddr, CSR5);
2749 lp->a.write_csr(ioaddr, CSR5, csr5 & (~CSR5_SUSPEND));
2750 } else {
2751 lp->a.write_csr(ioaddr, CSR0, CSR0_STOP);
2752 pcnet32_restart(dev, CSR0_NORMAL);
2753 netif_wake_queue(dev);
2754 }
2755
2756 spin_unlock_irqrestore(&lp->lock, flags);
2757 }
2758
2759 /* This routine assumes that the lp->lock is held */
2760 static int mdio_read(struct net_device *dev, int phy_id, int reg_num)
2761 {
2762 struct pcnet32_private *lp = netdev_priv(dev);
2763 unsigned long ioaddr = dev->base_addr;
2764 u16 val_out;
2765
2766 if (!lp->mii)
2767 return 0;
2768
2769 lp->a.write_bcr(ioaddr, 33, ((phy_id & 0x1f) << 5) | (reg_num & 0x1f));
2770 val_out = lp->a.read_bcr(ioaddr, 34);
2771
2772 return val_out;
2773 }
2774
2775 /* This routine assumes that the lp->lock is held */
2776 static void mdio_write(struct net_device *dev, int phy_id, int reg_num, int val)
2777 {
2778 struct pcnet32_private *lp = netdev_priv(dev);
2779 unsigned long ioaddr = dev->base_addr;
2780
2781 if (!lp->mii)
2782 return;
2783
2784 lp->a.write_bcr(ioaddr, 33, ((phy_id & 0x1f) << 5) | (reg_num & 0x1f));
2785 lp->a.write_bcr(ioaddr, 34, val);
2786 }
2787
2788 static int pcnet32_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2789 {
2790 struct pcnet32_private *lp = netdev_priv(dev);
2791 int rc;
2792 unsigned long flags;
2793
2794 /* SIOC[GS]MIIxxx ioctls */
2795 if (lp->mii) {
2796 spin_lock_irqsave(&lp->lock, flags);
2797 rc = generic_mii_ioctl(&lp->mii_if, if_mii(rq), cmd, NULL);
2798 spin_unlock_irqrestore(&lp->lock, flags);
2799 } else {
2800 rc = -EOPNOTSUPP;
2801 }
2802
2803 return rc;
2804 }
2805
2806 static int pcnet32_check_otherphy(struct net_device *dev)
2807 {
2808 struct pcnet32_private *lp = netdev_priv(dev);
2809 struct mii_if_info mii = lp->mii_if;
2810 u16 bmcr;
2811 int i;
2812
2813 for (i = 0; i < PCNET32_MAX_PHYS; i++) {
2814 if (i == lp->mii_if.phy_id)
2815 continue; /* skip active phy */
2816 if (lp->phymask & (1 << i)) {
2817 mii.phy_id = i;
2818 if (mii_link_ok(&mii)) {
2819 /* found PHY with active link */
2820 if (netif_msg_link(lp))
2821 printk(KERN_INFO
2822 "%s: Using PHY number %d.\n",
2823 dev->name, i);
2824
2825 /* isolate inactive phy */
2826 bmcr =
2827 mdio_read(dev, lp->mii_if.phy_id, MII_BMCR);
2828 mdio_write(dev, lp->mii_if.phy_id, MII_BMCR,
2829 bmcr | BMCR_ISOLATE);
2830
2831 /* de-isolate new phy */
2832 bmcr = mdio_read(dev, i, MII_BMCR);
2833 mdio_write(dev, i, MII_BMCR,
2834 bmcr & ~BMCR_ISOLATE);
2835
2836 /* set new phy address */
2837 lp->mii_if.phy_id = i;
2838 return 1;
2839 }
2840 }
2841 }
2842 return 0;
2843 }
2844
2845 /*
2846 * Show the status of the media. Similar to mii_check_media however it
2847 * correctly shows the link speed for all (tested) pcnet32 variants.
2848 * Devices with no mii just report link state without speed.
2849 *
2850 * Caller is assumed to hold and release the lp->lock.
2851 */
2852
2853 static void pcnet32_check_media(struct net_device *dev, int verbose)
2854 {
2855 struct pcnet32_private *lp = netdev_priv(dev);
2856 int curr_link;
2857 int prev_link = netif_carrier_ok(dev) ? 1 : 0;
2858 u32 bcr9;
2859
2860 if (lp->mii) {
2861 curr_link = mii_link_ok(&lp->mii_if);
2862 } else {
2863 ulong ioaddr = dev->base_addr; /* card base I/O address */
2864 curr_link = (lp->a.read_bcr(ioaddr, 4) != 0xc0);
2865 }
2866 if (!curr_link) {
2867 if (prev_link || verbose) {
2868 netif_carrier_off(dev);
2869 if (netif_msg_link(lp))
2870 printk(KERN_INFO "%s: link down\n", dev->name);
2871 }
2872 if (lp->phycount > 1) {
2873 curr_link = pcnet32_check_otherphy(dev);
2874 prev_link = 0;
2875 }
2876 } else if (verbose || !prev_link) {
2877 netif_carrier_on(dev);
2878 if (lp->mii) {
2879 if (netif_msg_link(lp)) {
2880 struct ethtool_cmd ecmd;
2881 mii_ethtool_gset(&lp->mii_if, &ecmd);
2882 printk(KERN_INFO
2883 "%s: link up, %sMbps, %s-duplex\n",
2884 dev->name,
2885 (ecmd.speed == SPEED_100) ? "100" : "10",
2886 (ecmd.duplex ==
2887 DUPLEX_FULL) ? "full" : "half");
2888 }
2889 bcr9 = lp->a.read_bcr(dev->base_addr, 9);
2890 if ((bcr9 & (1 << 0)) != lp->mii_if.full_duplex) {
2891 if (lp->mii_if.full_duplex)
2892 bcr9 |= (1 << 0);
2893 else
2894 bcr9 &= ~(1 << 0);
2895 lp->a.write_bcr(dev->base_addr, 9, bcr9);
2896 }
2897 } else {
2898 if (netif_msg_link(lp))
2899 printk(KERN_INFO "%s: link up\n", dev->name);
2900 }
2901 }
2902 }
2903
2904 /*
2905 * Check for loss of link and link establishment.
2906 * Can not use mii_check_media because it does nothing if mode is forced.
2907 */
2908
2909 static void pcnet32_watchdog(struct net_device *dev)
2910 {
2911 struct pcnet32_private *lp = netdev_priv(dev);
2912 unsigned long flags;
2913
2914 /* Print the link status if it has changed */
2915 spin_lock_irqsave(&lp->lock, flags);
2916 pcnet32_check_media(dev, 0);
2917 spin_unlock_irqrestore(&lp->lock, flags);
2918
2919 mod_timer(&lp->watchdog_timer, round_jiffies(PCNET32_WATCHDOG_TIMEOUT));
2920 }
2921
2922 static int pcnet32_pm_suspend(struct pci_dev *pdev, pm_message_t state)
2923 {
2924 struct net_device *dev = pci_get_drvdata(pdev);
2925
2926 if (netif_running(dev)) {
2927 netif_device_detach(dev);
2928 pcnet32_close(dev);
2929 }
2930 pci_save_state(pdev);
2931 pci_set_power_state(pdev, pci_choose_state(pdev, state));
2932 return 0;
2933 }
2934
2935 static int pcnet32_pm_resume(struct pci_dev *pdev)
2936 {
2937 struct net_device *dev = pci_get_drvdata(pdev);
2938
2939 pci_set_power_state(pdev, PCI_D0);
2940 pci_restore_state(pdev);
2941
2942 if (netif_running(dev)) {
2943 pcnet32_open(dev);
2944 netif_device_attach(dev);
2945 }
2946 return 0;
2947 }
2948
2949 static void __devexit pcnet32_remove_one(struct pci_dev *pdev)
2950 {
2951 struct net_device *dev = pci_get_drvdata(pdev);
2952
2953 if (dev) {
2954 struct pcnet32_private *lp = netdev_priv(dev);
2955
2956 unregister_netdev(dev);
2957 pcnet32_free_ring(dev);
2958 release_region(dev->base_addr, PCNET32_TOTAL_SIZE);
2959 pci_free_consistent(lp->pci_dev, sizeof(*lp->init_block),
2960 lp->init_block, lp->init_dma_addr);
2961 free_netdev(dev);
2962 pci_disable_device(pdev);
2963 pci_set_drvdata(pdev, NULL);
2964 }
2965 }
2966
2967 static struct pci_driver pcnet32_driver = {
2968 .name = DRV_NAME,
2969 .probe = pcnet32_probe_pci,
2970 .remove = __devexit_p(pcnet32_remove_one),
2971 .id_table = pcnet32_pci_tbl,
2972 .suspend = pcnet32_pm_suspend,
2973 .resume = pcnet32_pm_resume,
2974 };
2975
2976 /* An additional parameter that may be passed in... */
2977 static int debug = -1;
2978 static int tx_start_pt = -1;
2979 static int pcnet32_have_pci;
2980
2981 module_param(debug, int, 0);
2982 MODULE_PARM_DESC(debug, DRV_NAME " debug level");
2983 module_param(max_interrupt_work, int, 0);
2984 MODULE_PARM_DESC(max_interrupt_work,
2985 DRV_NAME " maximum events handled per interrupt");
2986 module_param(rx_copybreak, int, 0);
2987 MODULE_PARM_DESC(rx_copybreak,
2988 DRV_NAME " copy breakpoint for copy-only-tiny-frames");
2989 module_param(tx_start_pt, int, 0);
2990 MODULE_PARM_DESC(tx_start_pt, DRV_NAME " transmit start point (0-3)");
2991 module_param(pcnet32vlb, int, 0);
2992 MODULE_PARM_DESC(pcnet32vlb, DRV_NAME " Vesa local bus (VLB) support (0/1)");
2993 module_param_array(options, int, NULL, 0);
2994 MODULE_PARM_DESC(options, DRV_NAME " initial option setting(s) (0-15)");
2995 module_param_array(full_duplex, int, NULL, 0);
2996 MODULE_PARM_DESC(full_duplex, DRV_NAME " full duplex setting(s) (1)");
2997 /* Module Parameter for HomePNA cards added by Patrick Simmons, 2004 */
2998 module_param_array(homepna, int, NULL, 0);
2999 MODULE_PARM_DESC(homepna,
3000 DRV_NAME
3001 " mode for 79C978 cards (1 for HomePNA, 0 for Ethernet, default Ethernet");
3002
3003 MODULE_AUTHOR("Thomas Bogendoerfer");
3004 MODULE_DESCRIPTION("Driver for PCnet32 and PCnetPCI based ethercards");
3005 MODULE_LICENSE("GPL");
3006
3007 #define PCNET32_MSG_DEFAULT (NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK)
3008
3009 static int __init pcnet32_init_module(void)
3010 {
3011 printk(KERN_INFO "%s", version);
3012
3013 pcnet32_debug = netif_msg_init(debug, PCNET32_MSG_DEFAULT);
3014
3015 if ((tx_start_pt >= 0) && (tx_start_pt <= 3))
3016 tx_start = tx_start_pt;
3017
3018 /* find the PCI devices */
3019 if (!pci_register_driver(&pcnet32_driver))
3020 pcnet32_have_pci = 1;
3021
3022 /* should we find any remaining VLbus devices ? */
3023 if (pcnet32vlb)
3024 pcnet32_probe_vlbus(pcnet32_portlist);
3025
3026 if (cards_found && (pcnet32_debug & NETIF_MSG_PROBE))
3027 printk(KERN_INFO PFX "%d cards_found.\n", cards_found);
3028
3029 return (pcnet32_have_pci + cards_found) ? 0 : -ENODEV;
3030 }
3031
3032 static void __exit pcnet32_cleanup_module(void)
3033 {
3034 struct net_device *next_dev;
3035
3036 while (pcnet32_dev) {
3037 struct pcnet32_private *lp = netdev_priv(pcnet32_dev);
3038 next_dev = lp->next;
3039 unregister_netdev(pcnet32_dev);
3040 pcnet32_free_ring(pcnet32_dev);
3041 release_region(pcnet32_dev->base_addr, PCNET32_TOTAL_SIZE);
3042 pci_free_consistent(lp->pci_dev, sizeof(*lp->init_block),
3043 lp->init_block, lp->init_dma_addr);
3044 free_netdev(pcnet32_dev);
3045 pcnet32_dev = next_dev;
3046 }
3047
3048 if (pcnet32_have_pci)
3049 pci_unregister_driver(&pcnet32_driver);
3050 }
3051
3052 module_init(pcnet32_init_module);
3053 module_exit(pcnet32_cleanup_module);
3054
3055 /*
3056 * Local variables:
3057 * c-indent-level: 4
3058 * tab-width: 8
3059 * End:
3060 */
Linux kernel - Deliverables
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