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rt2x00: Driver requiring firmware should select crc algo
[linux-2.6/mini2440.git] / drivers / net / pcnet32.c
blob4eb322e5273dab2df2102db0c55eec8fff6e815f
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 #ifdef CONFIG_PCNET32_NAPI
26 #define DRV_VERSION "1.34-NAPI"
27 #else
28 #define DRV_VERSION "1.34"
29 #endif
30 #define DRV_RELDATE "14.Aug.2007"
31 #define PFX DRV_NAME ": "
32
33 static const char *const version =
34 DRV_NAME ".c:v" DRV_VERSION " " DRV_RELDATE " tsbogend@alpha.franken.de\n";
35
36 #include <linux/module.h>
37 #include <linux/kernel.h>
38 #include <linux/string.h>
39 #include <linux/errno.h>
40 #include <linux/ioport.h>
41 #include <linux/slab.h>
42 #include <linux/interrupt.h>
43 #include <linux/pci.h>
44 #include <linux/delay.h>
45 #include <linux/init.h>
46 #include <linux/ethtool.h>
47 #include <linux/mii.h>
48 #include <linux/crc32.h>
49 #include <linux/netdevice.h>
50 #include <linux/etherdevice.h>
51 #include <linux/skbuff.h>
52 #include <linux/spinlock.h>
53 #include <linux/moduleparam.h>
54 #include <linux/bitops.h>
55
56 #include <asm/dma.h>
57 #include <asm/io.h>
58 #include <asm/uaccess.h>
59 #include <asm/irq.h>
60
61 /*
62 * PCI device identifiers for "new style" Linux PCI Device Drivers
63 */
64 static struct pci_device_id pcnet32_pci_tbl[] = {
65 { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_LANCE_HOME), },
66 { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_LANCE), },
67
68 /*
69 * Adapters that were sold with IBM's RS/6000 or pSeries hardware have
70 * the incorrect vendor id.
71 */
72 { PCI_DEVICE(PCI_VENDOR_ID_TRIDENT, PCI_DEVICE_ID_AMD_LANCE),
73 .class = (PCI_CLASS_NETWORK_ETHERNET << 8), .class_mask = 0xffff00, },
74
75 { } /* terminate list */
76 };
77
78 MODULE_DEVICE_TABLE(pci, pcnet32_pci_tbl);
79
80 static int cards_found;
81
82 /*
83 * VLB I/O addresses
84 */
85 static unsigned int pcnet32_portlist[] __initdata =
86 { 0x300, 0x320, 0x340, 0x360, 0 };
87
88 static int pcnet32_debug = 0;
89 static int tx_start = 1; /* Mapping -- 0:20, 1:64, 2:128, 3:~220 (depends on chip vers) */
90 static int pcnet32vlb; /* check for VLB cards ? */
91
92 static struct net_device *pcnet32_dev;
93
94 static int max_interrupt_work = 2;
95 static int rx_copybreak = 200;
96
97 #define PCNET32_PORT_AUI 0x00
98 #define PCNET32_PORT_10BT 0x01
99 #define PCNET32_PORT_GPSI 0x02
100 #define PCNET32_PORT_MII 0x03
101
102 #define PCNET32_PORT_PORTSEL 0x03
103 #define PCNET32_PORT_ASEL 0x04
104 #define PCNET32_PORT_100 0x40
105 #define PCNET32_PORT_FD 0x80
106
107 #define PCNET32_DMA_MASK 0xffffffff
108
109 #define PCNET32_WATCHDOG_TIMEOUT (jiffies + (2 * HZ))
110 #define PCNET32_BLINK_TIMEOUT (jiffies + (HZ/4))
111
112 /*
113 * table to translate option values from tulip
114 * to internal options
115 */
116 static const unsigned char options_mapping[] = {
117 PCNET32_PORT_ASEL, /* 0 Auto-select */
118 PCNET32_PORT_AUI, /* 1 BNC/AUI */
119 PCNET32_PORT_AUI, /* 2 AUI/BNC */
120 PCNET32_PORT_ASEL, /* 3 not supported */
121 PCNET32_PORT_10BT | PCNET32_PORT_FD, /* 4 10baseT-FD */
122 PCNET32_PORT_ASEL, /* 5 not supported */
123 PCNET32_PORT_ASEL, /* 6 not supported */
124 PCNET32_PORT_ASEL, /* 7 not supported */
125 PCNET32_PORT_ASEL, /* 8 not supported */
126 PCNET32_PORT_MII, /* 9 MII 10baseT */
127 PCNET32_PORT_MII | PCNET32_PORT_FD, /* 10 MII 10baseT-FD */
128 PCNET32_PORT_MII, /* 11 MII (autosel) */
129 PCNET32_PORT_10BT, /* 12 10BaseT */
130 PCNET32_PORT_MII | PCNET32_PORT_100, /* 13 MII 100BaseTx */
131 /* 14 MII 100BaseTx-FD */
132 PCNET32_PORT_MII | PCNET32_PORT_100 | PCNET32_PORT_FD,
133 PCNET32_PORT_ASEL /* 15 not supported */
134 };
135
136 static const char pcnet32_gstrings_test[][ETH_GSTRING_LEN] = {
137 "Loopback test (offline)"
138 };
139
140 #define PCNET32_TEST_LEN ARRAY_SIZE(pcnet32_gstrings_test)
141
142 #define PCNET32_NUM_REGS 136
143
144 #define MAX_UNITS 8 /* More are supported, limit only on options */
145 static int options[MAX_UNITS];
146 static int full_duplex[MAX_UNITS];
147 static int homepna[MAX_UNITS];
148
149 /*
150 * Theory of Operation
151 *
152 * This driver uses the same software structure as the normal lance
153 * driver. So look for a verbose description in lance.c. The differences
154 * to the normal lance driver is the use of the 32bit mode of PCnet32
155 * and PCnetPCI chips. Because these chips are 32bit chips, there is no
156 * 16MB limitation and we don't need bounce buffers.
157 */
158
159 /*
160 * Set the number of Tx and Rx buffers, using Log_2(# buffers).
161 * Reasonable default values are 4 Tx buffers, and 16 Rx buffers.
162 * That translates to 2 (4 == 2^^2) and 4 (16 == 2^^4).
163 */
164 #ifndef PCNET32_LOG_TX_BUFFERS
165 #define PCNET32_LOG_TX_BUFFERS 4
166 #define PCNET32_LOG_RX_BUFFERS 5
167 #define PCNET32_LOG_MAX_TX_BUFFERS 9 /* 2^9 == 512 */
168 #define PCNET32_LOG_MAX_RX_BUFFERS 9
169 #endif
170
171 #define TX_RING_SIZE (1 << (PCNET32_LOG_TX_BUFFERS))
172 #define TX_MAX_RING_SIZE (1 << (PCNET32_LOG_MAX_TX_BUFFERS))
173
174 #define RX_RING_SIZE (1 << (PCNET32_LOG_RX_BUFFERS))
175 #define RX_MAX_RING_SIZE (1 << (PCNET32_LOG_MAX_RX_BUFFERS))
176
177 #define PKT_BUF_SKB 1544
178 /* actual buffer length after being aligned */
179 #define PKT_BUF_SIZE (PKT_BUF_SKB - NET_IP_ALIGN)
180 /* chip wants twos complement of the (aligned) buffer length */
181 #define NEG_BUF_SIZE (NET_IP_ALIGN - PKT_BUF_SKB)
182
183 /* Offsets from base I/O address. */
184 #define PCNET32_WIO_RDP 0x10
185 #define PCNET32_WIO_RAP 0x12
186 #define PCNET32_WIO_RESET 0x14
187 #define PCNET32_WIO_BDP 0x16
188
189 #define PCNET32_DWIO_RDP 0x10
190 #define PCNET32_DWIO_RAP 0x14
191 #define PCNET32_DWIO_RESET 0x18
192 #define PCNET32_DWIO_BDP 0x1C
193
194 #define PCNET32_TOTAL_SIZE 0x20
195
196 #define CSR0 0
197 #define CSR0_INIT 0x1
198 #define CSR0_START 0x2
199 #define CSR0_STOP 0x4
200 #define CSR0_TXPOLL 0x8
201 #define CSR0_INTEN 0x40
202 #define CSR0_IDON 0x0100
203 #define CSR0_NORMAL (CSR0_START | CSR0_INTEN)
204 #define PCNET32_INIT_LOW 1
205 #define PCNET32_INIT_HIGH 2
206 #define CSR3 3
207 #define CSR4 4
208 #define CSR5 5
209 #define CSR5_SUSPEND 0x0001
210 #define CSR15 15
211 #define PCNET32_MC_FILTER 8
212
213 #define PCNET32_79C970A 0x2621
214
215 /* The PCNET32 Rx and Tx ring descriptors. */
216 struct pcnet32_rx_head {
217 __le32 base;
218 __le16 buf_length; /* two`s complement of length */
219 __le16 status;
220 __le32 msg_length;
221 __le32 reserved;
222 };
223
224 struct pcnet32_tx_head {
225 __le32 base;
226 __le16 length; /* two`s complement of length */
227 __le16 status;
228 __le32 misc;
229 __le32 reserved;
230 };
231
232 /* The PCNET32 32-Bit initialization block, described in databook. */
233 struct pcnet32_init_block {
234 __le16 mode;
235 __le16 tlen_rlen;
236 u8 phys_addr[6];
237 __le16 reserved;
238 __le32 filter[2];
239 /* Receive and transmit ring base, along with extra bits. */
240 __le32 rx_ring;
241 __le32 tx_ring;
242 };
243
244 /* PCnet32 access functions */
245 struct pcnet32_access {
246 u16 (*read_csr) (unsigned long, int);
247 void (*write_csr) (unsigned long, int, u16);
248 u16 (*read_bcr) (unsigned long, int);
249 void (*write_bcr) (unsigned long, int, u16);
250 u16 (*read_rap) (unsigned long);
251 void (*write_rap) (unsigned long, u16);
252 void (*reset) (unsigned long);
253 };
254
255 /*
256 * The first field of pcnet32_private is read by the ethernet device
257 * so the structure should be allocated using pci_alloc_consistent().
258 */
259 struct pcnet32_private {
260 struct pcnet32_init_block *init_block;
261 /* The Tx and Rx ring entries must be aligned on 16-byte boundaries in 32bit mode. */
262 struct pcnet32_rx_head *rx_ring;
263 struct pcnet32_tx_head *tx_ring;
264 dma_addr_t init_dma_addr;/* DMA address of beginning of the init block,
265 returned by pci_alloc_consistent */
266 struct pci_dev *pci_dev;
267 const char *name;
268 /* The saved address of a sent-in-place packet/buffer, for skfree(). */
269 struct sk_buff **tx_skbuff;
270 struct sk_buff **rx_skbuff;
271 dma_addr_t *tx_dma_addr;
272 dma_addr_t *rx_dma_addr;
273 struct pcnet32_access a;
274 spinlock_t lock; /* Guard lock */
275 unsigned int cur_rx, cur_tx; /* The next free ring entry */
276 unsigned int rx_ring_size; /* current rx ring size */
277 unsigned int tx_ring_size; /* current tx ring size */
278 unsigned int rx_mod_mask; /* rx ring modular mask */
279 unsigned int tx_mod_mask; /* tx ring modular mask */
280 unsigned short rx_len_bits;
281 unsigned short tx_len_bits;
282 dma_addr_t rx_ring_dma_addr;
283 dma_addr_t tx_ring_dma_addr;
284 unsigned int dirty_rx, /* ring entries to be freed. */
285 dirty_tx;
286
287 struct net_device *dev;
288 struct napi_struct napi;
289 char tx_full;
290 char phycount; /* number of phys found */
291 int options;
292 unsigned int shared_irq:1, /* shared irq possible */
293 dxsuflo:1, /* disable transmit stop on uflo */
294 mii:1; /* mii port available */
295 struct net_device *next;
296 struct mii_if_info mii_if;
297 struct timer_list watchdog_timer;
298 struct timer_list blink_timer;
299 u32 msg_enable; /* debug message level */
300
301 /* each bit indicates an available PHY */
302 u32 phymask;
303 unsigned short chip_version; /* which variant this is */
304 };
305
306 static int pcnet32_probe_pci(struct pci_dev *, const struct pci_device_id *);
307 static int pcnet32_probe1(unsigned long, int, struct pci_dev *);
308 static int pcnet32_open(struct net_device *);
309 static int pcnet32_init_ring(struct net_device *);
310 static int pcnet32_start_xmit(struct sk_buff *, struct net_device *);
311 static void pcnet32_tx_timeout(struct net_device *dev);
312 static irqreturn_t pcnet32_interrupt(int, void *);
313 static int pcnet32_close(struct net_device *);
314 static struct net_device_stats *pcnet32_get_stats(struct net_device *);
315 static void pcnet32_load_multicast(struct net_device *dev);
316 static void pcnet32_set_multicast_list(struct net_device *);
317 static int pcnet32_ioctl(struct net_device *, struct ifreq *, int);
318 static void pcnet32_watchdog(struct net_device *);
319 static int mdio_read(struct net_device *dev, int phy_id, int reg_num);
320 static void mdio_write(struct net_device *dev, int phy_id, int reg_num,
321 int val);
322 static void pcnet32_restart(struct net_device *dev, unsigned int csr0_bits);
323 static void pcnet32_ethtool_test(struct net_device *dev,
324 struct ethtool_test *eth_test, u64 * data);
325 static int pcnet32_loopback_test(struct net_device *dev, uint64_t * data1);
326 static int pcnet32_phys_id(struct net_device *dev, u32 data);
327 static void pcnet32_led_blink_callback(struct net_device *dev);
328 static int pcnet32_get_regs_len(struct net_device *dev);
329 static void pcnet32_get_regs(struct net_device *dev, struct ethtool_regs *regs,
330 void *ptr);
331 static void pcnet32_purge_tx_ring(struct net_device *dev);
332 static int pcnet32_alloc_ring(struct net_device *dev, char *name);
333 static void pcnet32_free_ring(struct net_device *dev);
334 static void pcnet32_check_media(struct net_device *dev, int verbose);
335
336 static u16 pcnet32_wio_read_csr(unsigned long addr, int index)
337 {
338 outw(index, addr + PCNET32_WIO_RAP);
339 return inw(addr + PCNET32_WIO_RDP);
340 }
341
342 static void pcnet32_wio_write_csr(unsigned long addr, int index, u16 val)
343 {
344 outw(index, addr + PCNET32_WIO_RAP);
345 outw(val, addr + PCNET32_WIO_RDP);
346 }
347
348 static u16 pcnet32_wio_read_bcr(unsigned long addr, int index)
349 {
350 outw(index, addr + PCNET32_WIO_RAP);
351 return inw(addr + PCNET32_WIO_BDP);
352 }
353
354 static void pcnet32_wio_write_bcr(unsigned long addr, int index, u16 val)
355 {
356 outw(index, addr + PCNET32_WIO_RAP);
357 outw(val, addr + PCNET32_WIO_BDP);
358 }
359
360 static u16 pcnet32_wio_read_rap(unsigned long addr)
361 {
362 return inw(addr + PCNET32_WIO_RAP);
363 }
364
365 static void pcnet32_wio_write_rap(unsigned long addr, u16 val)
366 {
367 outw(val, addr + PCNET32_WIO_RAP);
368 }
369
370 static void pcnet32_wio_reset(unsigned long addr)
371 {
372 inw(addr + PCNET32_WIO_RESET);
373 }
374
375 static int pcnet32_wio_check(unsigned long addr)
376 {
377 outw(88, addr + PCNET32_WIO_RAP);
378 return (inw(addr + PCNET32_WIO_RAP) == 88);
379 }
380
381 static struct pcnet32_access pcnet32_wio = {
382 .read_csr = pcnet32_wio_read_csr,
383 .write_csr = pcnet32_wio_write_csr,
384 .read_bcr = pcnet32_wio_read_bcr,
385 .write_bcr = pcnet32_wio_write_bcr,
386 .read_rap = pcnet32_wio_read_rap,
387 .write_rap = pcnet32_wio_write_rap,
388 .reset = pcnet32_wio_reset
389 };
390
391 static u16 pcnet32_dwio_read_csr(unsigned long addr, int index)
392 {
393 outl(index, addr + PCNET32_DWIO_RAP);
394 return (inl(addr + PCNET32_DWIO_RDP) & 0xffff);
395 }
396
397 static void pcnet32_dwio_write_csr(unsigned long addr, int index, u16 val)
398 {
399 outl(index, addr + PCNET32_DWIO_RAP);
400 outl(val, addr + PCNET32_DWIO_RDP);
401 }
402
403 static u16 pcnet32_dwio_read_bcr(unsigned long addr, int index)
404 {
405 outl(index, addr + PCNET32_DWIO_RAP);
406 return (inl(addr + PCNET32_DWIO_BDP) & 0xffff);
407 }
408
409 static void pcnet32_dwio_write_bcr(unsigned long addr, int index, u16 val)
410 {
411 outl(index, addr + PCNET32_DWIO_RAP);
412 outl(val, addr + PCNET32_DWIO_BDP);
413 }
414
415 static u16 pcnet32_dwio_read_rap(unsigned long addr)
416 {
417 return (inl(addr + PCNET32_DWIO_RAP) & 0xffff);
418 }
419
420 static void pcnet32_dwio_write_rap(unsigned long addr, u16 val)
421 {
422 outl(val, addr + PCNET32_DWIO_RAP);
423 }
424
425 static void pcnet32_dwio_reset(unsigned long addr)
426 {
427 inl(addr + PCNET32_DWIO_RESET);
428 }
429
430 static int pcnet32_dwio_check(unsigned long addr)
431 {
432 outl(88, addr + PCNET32_DWIO_RAP);
433 return ((inl(addr + PCNET32_DWIO_RAP) & 0xffff) == 88);
434 }
435
436 static struct pcnet32_access pcnet32_dwio = {
437 .read_csr = pcnet32_dwio_read_csr,
438 .write_csr = pcnet32_dwio_write_csr,
439 .read_bcr = pcnet32_dwio_read_bcr,
440 .write_bcr = pcnet32_dwio_write_bcr,
441 .read_rap = pcnet32_dwio_read_rap,
442 .write_rap = pcnet32_dwio_write_rap,
443 .reset = pcnet32_dwio_reset
444 };
445
446 static void pcnet32_netif_stop(struct net_device *dev)
447 {
448 #ifdef CONFIG_PCNET32_NAPI
449 struct pcnet32_private *lp = netdev_priv(dev);
450 #endif
451 dev->trans_start = jiffies;
452 #ifdef CONFIG_PCNET32_NAPI
453 napi_disable(&lp->napi);
454 #endif
455 netif_tx_disable(dev);
456 }
457
458 static void pcnet32_netif_start(struct net_device *dev)
459 {
460 #ifdef CONFIG_PCNET32_NAPI
461 struct pcnet32_private *lp = netdev_priv(dev);
462 ulong ioaddr = dev->base_addr;
463 u16 val;
464 #endif
465 netif_wake_queue(dev);
466 #ifdef CONFIG_PCNET32_NAPI
467 val = lp->a.read_csr(ioaddr, CSR3);
468 val &= 0x00ff;
469 lp->a.write_csr(ioaddr, CSR3, val);
470 napi_enable(&lp->napi);
471 #endif
472 }
473
474 /*
475 * Allocate space for the new sized tx ring.
476 * Free old resources
477 * Save new resources.
478 * Any failure keeps old resources.
479 * Must be called with lp->lock held.
480 */
481 static void pcnet32_realloc_tx_ring(struct net_device *dev,
482 struct pcnet32_private *lp,
483 unsigned int size)
484 {
485 dma_addr_t new_ring_dma_addr;
486 dma_addr_t *new_dma_addr_list;
487 struct pcnet32_tx_head *new_tx_ring;
488 struct sk_buff **new_skb_list;
489
490 pcnet32_purge_tx_ring(dev);
491
492 new_tx_ring = pci_alloc_consistent(lp->pci_dev,
493 sizeof(struct pcnet32_tx_head) *
494 (1 << size),
495 &new_ring_dma_addr);
496 if (new_tx_ring == NULL) {
497 if (netif_msg_drv(lp))
498 printk("\n" KERN_ERR
499 "%s: Consistent memory allocation failed.\n",
500 dev->name);
501 return;
502 }
503 memset(new_tx_ring, 0, sizeof(struct pcnet32_tx_head) * (1 << size));
504
505 new_dma_addr_list = kcalloc((1 << size), sizeof(dma_addr_t),
506 GFP_ATOMIC);
507 if (!new_dma_addr_list) {
508 if (netif_msg_drv(lp))
509 printk("\n" KERN_ERR
510 "%s: Memory allocation failed.\n", dev->name);
511 goto free_new_tx_ring;
512 }
513
514 new_skb_list = kcalloc((1 << size), sizeof(struct sk_buff *),
515 GFP_ATOMIC);
516 if (!new_skb_list) {
517 if (netif_msg_drv(lp))
518 printk("\n" KERN_ERR
519 "%s: Memory allocation failed.\n", dev->name);
520 goto free_new_lists;
521 }
522
523 kfree(lp->tx_skbuff);
524 kfree(lp->tx_dma_addr);
525 pci_free_consistent(lp->pci_dev,
526 sizeof(struct pcnet32_tx_head) *
527 lp->tx_ring_size, lp->tx_ring,
528 lp->tx_ring_dma_addr);
529
530 lp->tx_ring_size = (1 << size);
531 lp->tx_mod_mask = lp->tx_ring_size - 1;
532 lp->tx_len_bits = (size << 12);
533 lp->tx_ring = new_tx_ring;
534 lp->tx_ring_dma_addr = new_ring_dma_addr;
535 lp->tx_dma_addr = new_dma_addr_list;
536 lp->tx_skbuff = new_skb_list;
537 return;
538
539 free_new_lists:
540 kfree(new_dma_addr_list);
541 free_new_tx_ring:
542 pci_free_consistent(lp->pci_dev,
543 sizeof(struct pcnet32_tx_head) *
544 (1 << size),
545 new_tx_ring,
546 new_ring_dma_addr);
547 return;
548 }
549
550 /*
551 * Allocate space for the new sized rx ring.
552 * Re-use old receive buffers.
553 * alloc extra buffers
554 * free unneeded buffers
555 * free unneeded buffers
556 * Save new resources.
557 * Any failure keeps old resources.
558 * Must be called with lp->lock held.
559 */
560 static void pcnet32_realloc_rx_ring(struct net_device *dev,
561 struct pcnet32_private *lp,
562 unsigned int size)
563 {
564 dma_addr_t new_ring_dma_addr;
565 dma_addr_t *new_dma_addr_list;
566 struct pcnet32_rx_head *new_rx_ring;
567 struct sk_buff **new_skb_list;
568 int new, overlap;
569
570 new_rx_ring = pci_alloc_consistent(lp->pci_dev,
571 sizeof(struct pcnet32_rx_head) *
572 (1 << size),
573 &new_ring_dma_addr);
574 if (new_rx_ring == NULL) {
575 if (netif_msg_drv(lp))
576 printk("\n" KERN_ERR
577 "%s: Consistent memory allocation failed.\n",
578 dev->name);
579 return;
580 }
581 memset(new_rx_ring, 0, sizeof(struct pcnet32_rx_head) * (1 << size));
582
583 new_dma_addr_list = kcalloc((1 << size), sizeof(dma_addr_t),
584 GFP_ATOMIC);
585 if (!new_dma_addr_list) {
586 if (netif_msg_drv(lp))
587 printk("\n" KERN_ERR
588 "%s: Memory allocation failed.\n", dev->name);
589 goto free_new_rx_ring;
590 }
591
592 new_skb_list = kcalloc((1 << size), sizeof(struct sk_buff *),
593 GFP_ATOMIC);
594 if (!new_skb_list) {
595 if (netif_msg_drv(lp))
596 printk("\n" KERN_ERR
597 "%s: Memory allocation failed.\n", dev->name);
598 goto free_new_lists;
599 }
600
601 /* first copy the current receive buffers */
602 overlap = min(size, lp->rx_ring_size);
603 for (new = 0; new < overlap; new++) {
604 new_rx_ring[new] = lp->rx_ring[new];
605 new_dma_addr_list[new] = lp->rx_dma_addr[new];
606 new_skb_list[new] = lp->rx_skbuff[new];
607 }
608 /* now allocate any new buffers needed */
609 for (; new < size; new++ ) {
610 struct sk_buff *rx_skbuff;
611 new_skb_list[new] = dev_alloc_skb(PKT_BUF_SKB);
612 if (!(rx_skbuff = new_skb_list[new])) {
613 /* keep the original lists and buffers */
614 if (netif_msg_drv(lp))
615 printk(KERN_ERR
616 "%s: pcnet32_realloc_rx_ring dev_alloc_skb failed.\n",
617 dev->name);
618 goto free_all_new;
619 }
620 skb_reserve(rx_skbuff, NET_IP_ALIGN);
621
622 new_dma_addr_list[new] =
623 pci_map_single(lp->pci_dev, rx_skbuff->data,
624 PKT_BUF_SIZE, PCI_DMA_FROMDEVICE);
625 new_rx_ring[new].base = cpu_to_le32(new_dma_addr_list[new]);
626 new_rx_ring[new].buf_length = cpu_to_le16(NEG_BUF_SIZE);
627 new_rx_ring[new].status = cpu_to_le16(0x8000);
628 }
629 /* and free any unneeded buffers */
630 for (; new < lp->rx_ring_size; new++) {
631 if (lp->rx_skbuff[new]) {
632 pci_unmap_single(lp->pci_dev, lp->rx_dma_addr[new],
633 PKT_BUF_SIZE, PCI_DMA_FROMDEVICE);
634 dev_kfree_skb(lp->rx_skbuff[new]);
635 }
636 }
637
638 kfree(lp->rx_skbuff);
639 kfree(lp->rx_dma_addr);
640 pci_free_consistent(lp->pci_dev,
641 sizeof(struct pcnet32_rx_head) *
642 lp->rx_ring_size, lp->rx_ring,
643 lp->rx_ring_dma_addr);
644
645 lp->rx_ring_size = (1 << size);
646 lp->rx_mod_mask = lp->rx_ring_size - 1;
647 lp->rx_len_bits = (size << 4);
648 lp->rx_ring = new_rx_ring;
649 lp->rx_ring_dma_addr = new_ring_dma_addr;
650 lp->rx_dma_addr = new_dma_addr_list;
651 lp->rx_skbuff = new_skb_list;
652 return;
653
654 free_all_new:
655 for (; --new >= lp->rx_ring_size; ) {
656 if (new_skb_list[new]) {
657 pci_unmap_single(lp->pci_dev, new_dma_addr_list[new],
658 PKT_BUF_SIZE, PCI_DMA_FROMDEVICE);
659 dev_kfree_skb(new_skb_list[new]);
660 }
661 }
662 kfree(new_skb_list);
663 free_new_lists:
664 kfree(new_dma_addr_list);
665 free_new_rx_ring:
666 pci_free_consistent(lp->pci_dev,
667 sizeof(struct pcnet32_rx_head) *
668 (1 << size),
669 new_rx_ring,
670 new_ring_dma_addr);
671 return;
672 }
673
674 static void pcnet32_purge_rx_ring(struct net_device *dev)
675 {
676 struct pcnet32_private *lp = netdev_priv(dev);
677 int i;
678
679 /* free all allocated skbuffs */
680 for (i = 0; i < lp->rx_ring_size; i++) {
681 lp->rx_ring[i].status = 0; /* CPU owns buffer */
682 wmb(); /* Make sure adapter sees owner change */
683 if (lp->rx_skbuff[i]) {
684 pci_unmap_single(lp->pci_dev, lp->rx_dma_addr[i],
685 PKT_BUF_SIZE, PCI_DMA_FROMDEVICE);
686 dev_kfree_skb_any(lp->rx_skbuff[i]);
687 }
688 lp->rx_skbuff[i] = NULL;
689 lp->rx_dma_addr[i] = 0;
690 }
691 }
692
693 #ifdef CONFIG_NET_POLL_CONTROLLER
694 static void pcnet32_poll_controller(struct net_device *dev)
695 {
696 disable_irq(dev->irq);
697 pcnet32_interrupt(0, dev);
698 enable_irq(dev->irq);
699 }
700 #endif
701
702 static int pcnet32_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
703 {
704 struct pcnet32_private *lp = netdev_priv(dev);
705 unsigned long flags;
706 int r = -EOPNOTSUPP;
707
708 if (lp->mii) {
709 spin_lock_irqsave(&lp->lock, flags);
710 mii_ethtool_gset(&lp->mii_if, cmd);
711 spin_unlock_irqrestore(&lp->lock, flags);
712 r = 0;
713 }
714 return r;
715 }
716
717 static int pcnet32_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
718 {
719 struct pcnet32_private *lp = netdev_priv(dev);
720 unsigned long flags;
721 int r = -EOPNOTSUPP;
722
723 if (lp->mii) {
724 spin_lock_irqsave(&lp->lock, flags);
725 r = mii_ethtool_sset(&lp->mii_if, cmd);
726 spin_unlock_irqrestore(&lp->lock, flags);
727 }
728 return r;
729 }
730
731 static void pcnet32_get_drvinfo(struct net_device *dev,
732 struct ethtool_drvinfo *info)
733 {
734 struct pcnet32_private *lp = netdev_priv(dev);
735
736 strcpy(info->driver, DRV_NAME);
737 strcpy(info->version, DRV_VERSION);
738 if (lp->pci_dev)
739 strcpy(info->bus_info, pci_name(lp->pci_dev));
740 else
741 sprintf(info->bus_info, "VLB 0x%lx", dev->base_addr);
742 }
743
744 static u32 pcnet32_get_link(struct net_device *dev)
745 {
746 struct pcnet32_private *lp = netdev_priv(dev);
747 unsigned long flags;
748 int r;
749
750 spin_lock_irqsave(&lp->lock, flags);
751 if (lp->mii) {
752 r = mii_link_ok(&lp->mii_if);
753 } else if (lp->chip_version >= PCNET32_79C970A) {
754 ulong ioaddr = dev->base_addr; /* card base I/O address */
755 r = (lp->a.read_bcr(ioaddr, 4) != 0xc0);
756 } else { /* can not detect link on really old chips */
757 r = 1;
758 }
759 spin_unlock_irqrestore(&lp->lock, flags);
760
761 return r;
762 }
763
764 static u32 pcnet32_get_msglevel(struct net_device *dev)
765 {
766 struct pcnet32_private *lp = netdev_priv(dev);
767 return lp->msg_enable;
768 }
769
770 static void pcnet32_set_msglevel(struct net_device *dev, u32 value)
771 {
772 struct pcnet32_private *lp = netdev_priv(dev);
773 lp->msg_enable = value;
774 }
775
776 static int pcnet32_nway_reset(struct net_device *dev)
777 {
778 struct pcnet32_private *lp = netdev_priv(dev);
779 unsigned long flags;
780 int r = -EOPNOTSUPP;
781
782 if (lp->mii) {
783 spin_lock_irqsave(&lp->lock, flags);
784 r = mii_nway_restart(&lp->mii_if);
785 spin_unlock_irqrestore(&lp->lock, flags);
786 }
787 return r;
788 }
789
790 static void pcnet32_get_ringparam(struct net_device *dev,
791 struct ethtool_ringparam *ering)
792 {
793 struct pcnet32_private *lp = netdev_priv(dev);
794
795 ering->tx_max_pending = TX_MAX_RING_SIZE;
796 ering->tx_pending = lp->tx_ring_size;
797 ering->rx_max_pending = RX_MAX_RING_SIZE;
798 ering->rx_pending = lp->rx_ring_size;
799 }
800
801 static int pcnet32_set_ringparam(struct net_device *dev,
802 struct ethtool_ringparam *ering)
803 {
804 struct pcnet32_private *lp = netdev_priv(dev);
805 unsigned long flags;
806 unsigned int size;
807 ulong ioaddr = dev->base_addr;
808 int i;
809
810 if (ering->rx_mini_pending || ering->rx_jumbo_pending)
811 return -EINVAL;
812
813 if (netif_running(dev))
814 pcnet32_netif_stop(dev);
815
816 spin_lock_irqsave(&lp->lock, flags);
817 lp->a.write_csr(ioaddr, CSR0, CSR0_STOP); /* stop the chip */
818
819 size = min(ering->tx_pending, (unsigned int)TX_MAX_RING_SIZE);
820
821 /* set the minimum ring size to 4, to allow the loopback test to work
822 * unchanged.
823 */
824 for (i = 2; i <= PCNET32_LOG_MAX_TX_BUFFERS; i++) {
825 if (size <= (1 << i))
826 break;
827 }
828 if ((1 << i) != lp->tx_ring_size)
829 pcnet32_realloc_tx_ring(dev, lp, i);
830
831 size = min(ering->rx_pending, (unsigned int)RX_MAX_RING_SIZE);
832 for (i = 2; i <= PCNET32_LOG_MAX_RX_BUFFERS; i++) {
833 if (size <= (1 << i))
834 break;
835 }
836 if ((1 << i) != lp->rx_ring_size)
837 pcnet32_realloc_rx_ring(dev, lp, i);
838
839 lp->napi.weight = lp->rx_ring_size / 2;
840
841 if (netif_running(dev)) {
842 pcnet32_netif_start(dev);
843 pcnet32_restart(dev, CSR0_NORMAL);
844 }
845
846 spin_unlock_irqrestore(&lp->lock, flags);
847
848 if (netif_msg_drv(lp))
849 printk(KERN_INFO
850 "%s: Ring Param Settings: RX: %d, TX: %d\n", dev->name,
851 lp->rx_ring_size, lp->tx_ring_size);
852
853 return 0;
854 }
855
856 static void pcnet32_get_strings(struct net_device *dev, u32 stringset,
857 u8 * data)
858 {
859 memcpy(data, pcnet32_gstrings_test, sizeof(pcnet32_gstrings_test));
860 }
861
862 static int pcnet32_get_sset_count(struct net_device *dev, int sset)
863 {
864 switch (sset) {
865 case ETH_SS_TEST:
866 return PCNET32_TEST_LEN;
867 default:
868 return -EOPNOTSUPP;
869 }
870 }
871
872 static void pcnet32_ethtool_test(struct net_device *dev,
873 struct ethtool_test *test, u64 * data)
874 {
875 struct pcnet32_private *lp = netdev_priv(dev);
876 int rc;
877
878 if (test->flags == ETH_TEST_FL_OFFLINE) {
879 rc = pcnet32_loopback_test(dev, data);
880 if (rc) {
881 if (netif_msg_hw(lp))
882 printk(KERN_DEBUG "%s: Loopback test failed.\n",
883 dev->name);
884 test->flags |= ETH_TEST_FL_FAILED;
885 } else if (netif_msg_hw(lp))
886 printk(KERN_DEBUG "%s: Loopback test passed.\n",
887 dev->name);
888 } else if (netif_msg_hw(lp))
889 printk(KERN_DEBUG
890 "%s: No tests to run (specify 'Offline' on ethtool).",
891 dev->name);
892 } /* end pcnet32_ethtool_test */
893
894 static int pcnet32_loopback_test(struct net_device *dev, uint64_t * data1)
895 {
896 struct pcnet32_private *lp = netdev_priv(dev);
897 struct pcnet32_access *a = &lp->a; /* access to registers */
898 ulong ioaddr = dev->base_addr; /* card base I/O address */
899 struct sk_buff *skb; /* sk buff */
900 int x, i; /* counters */
901 int numbuffs = 4; /* number of TX/RX buffers and descs */
902 u16 status = 0x8300; /* TX ring status */
903 __le16 teststatus; /* test of ring status */
904 int rc; /* return code */
905 int size; /* size of packets */
906 unsigned char *packet; /* source packet data */
907 static const int data_len = 60; /* length of source packets */
908 unsigned long flags;
909 unsigned long ticks;
910
911 rc = 1; /* default to fail */
912
913 if (netif_running(dev))
914 #ifdef CONFIG_PCNET32_NAPI
915 pcnet32_netif_stop(dev);
916 #else
917 pcnet32_close(dev);
918 #endif
919
920 spin_lock_irqsave(&lp->lock, flags);
921 lp->a.write_csr(ioaddr, CSR0, CSR0_STOP); /* stop the chip */
922
923 numbuffs = min(numbuffs, (int)min(lp->rx_ring_size, lp->tx_ring_size));
924
925 /* Reset the PCNET32 */
926 lp->a.reset(ioaddr);
927 lp->a.write_csr(ioaddr, CSR4, 0x0915); /* auto tx pad */
928
929 /* switch pcnet32 to 32bit mode */
930 lp->a.write_bcr(ioaddr, 20, 2);
931
932 /* purge & init rings but don't actually restart */
933 pcnet32_restart(dev, 0x0000);
934
935 lp->a.write_csr(ioaddr, CSR0, CSR0_STOP); /* Set STOP bit */
936
937 /* Initialize Transmit buffers. */
938 size = data_len + 15;
939 for (x = 0; x < numbuffs; x++) {
940 if (!(skb = dev_alloc_skb(size))) {
941 if (netif_msg_hw(lp))
942 printk(KERN_DEBUG
943 "%s: Cannot allocate skb at line: %d!\n",
944 dev->name, __LINE__);
945 goto clean_up;
946 } else {
947 packet = skb->data;
948 skb_put(skb, size); /* create space for data */
949 lp->tx_skbuff[x] = skb;
950 lp->tx_ring[x].length = cpu_to_le16(-skb->len);
951 lp->tx_ring[x].misc = 0;
952
953 /* put DA and SA into the skb */
954 for (i = 0; i < 6; i++)
955 *packet++ = dev->dev_addr[i];
956 for (i = 0; i < 6; i++)
957 *packet++ = dev->dev_addr[i];
958 /* type */
959 *packet++ = 0x08;
960 *packet++ = 0x06;
961 /* packet number */
962 *packet++ = x;
963 /* fill packet with data */
964 for (i = 0; i < data_len; i++)
965 *packet++ = i;
966
967 lp->tx_dma_addr[x] =
968 pci_map_single(lp->pci_dev, skb->data, skb->len,
969 PCI_DMA_TODEVICE);
970 lp->tx_ring[x].base = cpu_to_le32(lp->tx_dma_addr[x]);
971 wmb(); /* Make sure owner changes after all others are visible */
972 lp->tx_ring[x].status = cpu_to_le16(status);
973 }
974 }
975
976 x = a->read_bcr(ioaddr, 32); /* set internal loopback in BCR32 */
977 a->write_bcr(ioaddr, 32, x | 0x0002);
978
979 /* set int loopback in CSR15 */
980 x = a->read_csr(ioaddr, CSR15) & 0xfffc;
981 lp->a.write_csr(ioaddr, CSR15, x | 0x0044);
982
983 teststatus = cpu_to_le16(0x8000);
984 lp->a.write_csr(ioaddr, CSR0, CSR0_START); /* Set STRT bit */
985
986 /* Check status of descriptors */
987 for (x = 0; x < numbuffs; x++) {
988 ticks = 0;
989 rmb();
990 while ((lp->rx_ring[x].status & teststatus) && (ticks < 200)) {
991 spin_unlock_irqrestore(&lp->lock, flags);
992 msleep(1);
993 spin_lock_irqsave(&lp->lock, flags);
994 rmb();
995 ticks++;
996 }
997 if (ticks == 200) {
998 if (netif_msg_hw(lp))
999 printk("%s: Desc %d failed to reset!\n",
1000 dev->name, x);
1001 break;
1002 }
1003 }
1004
1005 lp->a.write_csr(ioaddr, CSR0, CSR0_STOP); /* Set STOP bit */
1006 wmb();
1007 if (netif_msg_hw(lp) && netif_msg_pktdata(lp)) {
1008 printk(KERN_DEBUG "%s: RX loopback packets:\n", dev->name);
1009
1010 for (x = 0; x < numbuffs; x++) {
1011 printk(KERN_DEBUG "%s: Packet %d:\n", dev->name, x);
1012 skb = lp->rx_skbuff[x];
1013 for (i = 0; i < size; i++) {
1014 printk("%02x ", *(skb->data + i));
1015 }
1016 printk("\n");
1017 }
1018 }
1019
1020 x = 0;
1021 rc = 0;
1022 while (x < numbuffs && !rc) {
1023 skb = lp->rx_skbuff[x];
1024 packet = lp->tx_skbuff[x]->data;
1025 for (i = 0; i < size; i++) {
1026 if (*(skb->data + i) != packet[i]) {
1027 if (netif_msg_hw(lp))
1028 printk(KERN_DEBUG
1029 "%s: Error in compare! %2x - %02x %02x\n",
1030 dev->name, i, *(skb->data + i),
1031 packet[i]);
1032 rc = 1;
1033 break;
1034 }
1035 }
1036 x++;
1037 }
1038
1039 clean_up:
1040 *data1 = rc;
1041 pcnet32_purge_tx_ring(dev);
1042
1043 x = a->read_csr(ioaddr, CSR15);
1044 a->write_csr(ioaddr, CSR15, (x & ~0x0044)); /* reset bits 6 and 2 */
1045
1046 x = a->read_bcr(ioaddr, 32); /* reset internal loopback */
1047 a->write_bcr(ioaddr, 32, (x & ~0x0002));
1048
1049 #ifdef CONFIG_PCNET32_NAPI
1050 if (netif_running(dev)) {
1051 pcnet32_netif_start(dev);
1052 pcnet32_restart(dev, CSR0_NORMAL);
1053 } else {
1054 pcnet32_purge_rx_ring(dev);
1055 lp->a.write_bcr(ioaddr, 20, 4); /* return to 16bit mode */
1056 }
1057 spin_unlock_irqrestore(&lp->lock, flags);
1058 #else
1059 if (netif_running(dev)) {
1060 spin_unlock_irqrestore(&lp->lock, flags);
1061 pcnet32_open(dev);
1062 } else {
1063 pcnet32_purge_rx_ring(dev);
1064 lp->a.write_bcr(ioaddr, 20, 4); /* return to 16bit mode */
1065 spin_unlock_irqrestore(&lp->lock, flags);
1066 }
1067 #endif
1068
1069 return (rc);
1070 } /* end pcnet32_loopback_test */
1071
1072 static void pcnet32_led_blink_callback(struct net_device *dev)
1073 {
1074 struct pcnet32_private *lp = netdev_priv(dev);
1075 struct pcnet32_access *a = &lp->a;
1076 ulong ioaddr = dev->base_addr;
1077 unsigned long flags;
1078 int i;
1079
1080 spin_lock_irqsave(&lp->lock, flags);
1081 for (i = 4; i < 8; i++) {
1082 a->write_bcr(ioaddr, i, a->read_bcr(ioaddr, i) ^ 0x4000);
1083 }
1084 spin_unlock_irqrestore(&lp->lock, flags);
1085
1086 mod_timer(&lp->blink_timer, PCNET32_BLINK_TIMEOUT);
1087 }
1088
1089 static int pcnet32_phys_id(struct net_device *dev, u32 data)
1090 {
1091 struct pcnet32_private *lp = netdev_priv(dev);
1092 struct pcnet32_access *a = &lp->a;
1093 ulong ioaddr = dev->base_addr;
1094 unsigned long flags;
1095 int i, regs[4];
1096
1097 if (!lp->blink_timer.function) {
1098 init_timer(&lp->blink_timer);
1099 lp->blink_timer.function = (void *)pcnet32_led_blink_callback;
1100 lp->blink_timer.data = (unsigned long)dev;
1101 }
1102
1103 /* Save the current value of the bcrs */
1104 spin_lock_irqsave(&lp->lock, flags);
1105 for (i = 4; i < 8; i++) {
1106 regs[i - 4] = a->read_bcr(ioaddr, i);
1107 }
1108 spin_unlock_irqrestore(&lp->lock, flags);
1109
1110 mod_timer(&lp->blink_timer, jiffies);
1111 set_current_state(TASK_INTERRUPTIBLE);
1112
1113 /* AV: the limit here makes no sense whatsoever */
1114 if ((!data) || (data > (u32) (MAX_SCHEDULE_TIMEOUT / HZ)))
1115 data = (u32) (MAX_SCHEDULE_TIMEOUT / HZ);
1116
1117 msleep_interruptible(data * 1000);
1118 del_timer_sync(&lp->blink_timer);
1119
1120 /* Restore the original value of the bcrs */
1121 spin_lock_irqsave(&lp->lock, flags);
1122 for (i = 4; i < 8; i++) {
1123 a->write_bcr(ioaddr, i, regs[i - 4]);
1124 }
1125 spin_unlock_irqrestore(&lp->lock, flags);
1126
1127 return 0;
1128 }
1129
1130 /*
1131 * lp->lock must be held.
1132 */
1133 static int pcnet32_suspend(struct net_device *dev, unsigned long *flags,
1134 int can_sleep)
1135 {
1136 int csr5;
1137 struct pcnet32_private *lp = netdev_priv(dev);
1138 struct pcnet32_access *a = &lp->a;
1139 ulong ioaddr = dev->base_addr;
1140 int ticks;
1141
1142 /* really old chips have to be stopped. */
1143 if (lp->chip_version < PCNET32_79C970A)
1144 return 0;
1145
1146 /* set SUSPEND (SPND) - CSR5 bit 0 */
1147 csr5 = a->read_csr(ioaddr, CSR5);
1148 a->write_csr(ioaddr, CSR5, csr5 | CSR5_SUSPEND);
1149
1150 /* poll waiting for bit to be set */
1151 ticks = 0;
1152 while (!(a->read_csr(ioaddr, CSR5) & CSR5_SUSPEND)) {
1153 spin_unlock_irqrestore(&lp->lock, *flags);
1154 if (can_sleep)
1155 msleep(1);
1156 else
1157 mdelay(1);
1158 spin_lock_irqsave(&lp->lock, *flags);
1159 ticks++;
1160 if (ticks > 200) {
1161 if (netif_msg_hw(lp))
1162 printk(KERN_DEBUG
1163 "%s: Error getting into suspend!\n",
1164 dev->name);
1165 return 0;
1166 }
1167 }
1168 return 1;
1169 }
1170
1171 /*
1172 * process one receive descriptor entry
1173 */
1174
1175 static void pcnet32_rx_entry(struct net_device *dev,
1176 struct pcnet32_private *lp,
1177 struct pcnet32_rx_head *rxp,
1178 int entry)
1179 {
1180 int status = (short)le16_to_cpu(rxp->status) >> 8;
1181 int rx_in_place = 0;
1182 struct sk_buff *skb;
1183 short pkt_len;
1184
1185 if (status != 0x03) { /* There was an error. */
1186 /*
1187 * There is a tricky error noted by John Murphy,
1188 * <murf@perftech.com> to Russ Nelson: Even with full-sized
1189 * buffers it's possible for a jabber packet to use two
1190 * buffers, with only the last correctly noting the error.
1191 */
1192 if (status & 0x01) /* Only count a general error at the */
1193 dev->stats.rx_errors++; /* end of a packet. */
1194 if (status & 0x20)
1195 dev->stats.rx_frame_errors++;
1196 if (status & 0x10)
1197 dev->stats.rx_over_errors++;
1198 if (status & 0x08)
1199 dev->stats.rx_crc_errors++;
1200 if (status & 0x04)
1201 dev->stats.rx_fifo_errors++;
1202 return;
1203 }
1204
1205 pkt_len = (le32_to_cpu(rxp->msg_length) & 0xfff) - 4;
1206
1207 /* Discard oversize frames. */
1208 if (unlikely(pkt_len > PKT_BUF_SIZE)) {
1209 if (netif_msg_drv(lp))
1210 printk(KERN_ERR "%s: Impossible packet size %d!\n",
1211 dev->name, pkt_len);
1212 dev->stats.rx_errors++;
1213 return;
1214 }
1215 if (pkt_len < 60) {
1216 if (netif_msg_rx_err(lp))
1217 printk(KERN_ERR "%s: Runt packet!\n", dev->name);
1218 dev->stats.rx_errors++;
1219 return;
1220 }
1221
1222 if (pkt_len > rx_copybreak) {
1223 struct sk_buff *newskb;
1224
1225 if ((newskb = dev_alloc_skb(PKT_BUF_SKB))) {
1226 skb_reserve(newskb, NET_IP_ALIGN);
1227 skb = lp->rx_skbuff[entry];
1228 pci_unmap_single(lp->pci_dev,
1229 lp->rx_dma_addr[entry],
1230 PKT_BUF_SIZE,
1231 PCI_DMA_FROMDEVICE);
1232 skb_put(skb, pkt_len);
1233 lp->rx_skbuff[entry] = newskb;
1234 lp->rx_dma_addr[entry] =
1235 pci_map_single(lp->pci_dev,
1236 newskb->data,
1237 PKT_BUF_SIZE,
1238 PCI_DMA_FROMDEVICE);
1239 rxp->base = cpu_to_le32(lp->rx_dma_addr[entry]);
1240 rx_in_place = 1;
1241 } else
1242 skb = NULL;
1243 } else {
1244 skb = dev_alloc_skb(pkt_len + NET_IP_ALIGN);
1245 }
1246
1247 if (skb == NULL) {
1248 if (netif_msg_drv(lp))
1249 printk(KERN_ERR
1250 "%s: Memory squeeze, dropping packet.\n",
1251 dev->name);
1252 dev->stats.rx_dropped++;
1253 return;
1254 }
1255 skb->dev = dev;
1256 if (!rx_in_place) {
1257 skb_reserve(skb, NET_IP_ALIGN);
1258 skb_put(skb, pkt_len); /* Make room */
1259 pci_dma_sync_single_for_cpu(lp->pci_dev,
1260 lp->rx_dma_addr[entry],
1261 pkt_len,
1262 PCI_DMA_FROMDEVICE);
1263 skb_copy_to_linear_data(skb,
1264 (unsigned char *)(lp->rx_skbuff[entry]->data),
1265 pkt_len);
1266 pci_dma_sync_single_for_device(lp->pci_dev,
1267 lp->rx_dma_addr[entry],
1268 pkt_len,
1269 PCI_DMA_FROMDEVICE);
1270 }
1271 dev->stats.rx_bytes += skb->len;
1272 skb->protocol = eth_type_trans(skb, dev);
1273 #ifdef CONFIG_PCNET32_NAPI
1274 netif_receive_skb(skb);
1275 #else
1276 netif_rx(skb);
1277 #endif
1278 dev->last_rx = jiffies;
1279 dev->stats.rx_packets++;
1280 return;
1281 }
1282
1283 static int pcnet32_rx(struct net_device *dev, int budget)
1284 {
1285 struct pcnet32_private *lp = netdev_priv(dev);
1286 int entry = lp->cur_rx & lp->rx_mod_mask;
1287 struct pcnet32_rx_head *rxp = &lp->rx_ring[entry];
1288 int npackets = 0;
1289
1290 /* If we own the next entry, it's a new packet. Send it up. */
1291 while (npackets < budget && (short)le16_to_cpu(rxp->status) >= 0) {
1292 pcnet32_rx_entry(dev, lp, rxp, entry);
1293 npackets += 1;
1294 /*
1295 * The docs say that the buffer length isn't touched, but Andrew
1296 * Boyd of QNX reports that some revs of the 79C965 clear it.
1297 */
1298 rxp->buf_length = cpu_to_le16(NEG_BUF_SIZE);
1299 wmb(); /* Make sure owner changes after others are visible */
1300 rxp->status = cpu_to_le16(0x8000);
1301 entry = (++lp->cur_rx) & lp->rx_mod_mask;
1302 rxp = &lp->rx_ring[entry];
1303 }
1304
1305 return npackets;
1306 }
1307
1308 static int pcnet32_tx(struct net_device *dev)
1309 {
1310 struct pcnet32_private *lp = netdev_priv(dev);
1311 unsigned int dirty_tx = lp->dirty_tx;
1312 int delta;
1313 int must_restart = 0;
1314
1315 while (dirty_tx != lp->cur_tx) {
1316 int entry = dirty_tx & lp->tx_mod_mask;
1317 int status = (short)le16_to_cpu(lp->tx_ring[entry].status);
1318
1319 if (status < 0)
1320 break; /* It still hasn't been Txed */
1321
1322 lp->tx_ring[entry].base = 0;
1323
1324 if (status & 0x4000) {
1325 /* There was a major error, log it. */
1326 int err_status = le32_to_cpu(lp->tx_ring[entry].misc);
1327 dev->stats.tx_errors++;
1328 if (netif_msg_tx_err(lp))
1329 printk(KERN_ERR
1330 "%s: Tx error status=%04x err_status=%08x\n",
1331 dev->name, status,
1332 err_status);
1333 if (err_status & 0x04000000)
1334 dev->stats.tx_aborted_errors++;
1335 if (err_status & 0x08000000)
1336 dev->stats.tx_carrier_errors++;
1337 if (err_status & 0x10000000)
1338 dev->stats.tx_window_errors++;
1339 #ifndef DO_DXSUFLO
1340 if (err_status & 0x40000000) {
1341 dev->stats.tx_fifo_errors++;
1342 /* Ackk! On FIFO errors the Tx unit is turned off! */
1343 /* Remove this verbosity later! */
1344 if (netif_msg_tx_err(lp))
1345 printk(KERN_ERR
1346 "%s: Tx FIFO error!\n",
1347 dev->name);
1348 must_restart = 1;
1349 }
1350 #else
1351 if (err_status & 0x40000000) {
1352 dev->stats.tx_fifo_errors++;
1353 if (!lp->dxsuflo) { /* If controller doesn't recover ... */
1354 /* Ackk! On FIFO errors the Tx unit is turned off! */
1355 /* Remove this verbosity later! */
1356 if (netif_msg_tx_err(lp))
1357 printk(KERN_ERR
1358 "%s: Tx FIFO error!\n",
1359 dev->name);
1360 must_restart = 1;
1361 }
1362 }
1363 #endif
1364 } else {
1365 if (status & 0x1800)
1366 dev->stats.collisions++;
1367 dev->stats.tx_packets++;
1368 }
1369
1370 /* We must free the original skb */
1371 if (lp->tx_skbuff[entry]) {
1372 pci_unmap_single(lp->pci_dev,
1373 lp->tx_dma_addr[entry],
1374 lp->tx_skbuff[entry]->
1375 len, PCI_DMA_TODEVICE);
1376 dev_kfree_skb_any(lp->tx_skbuff[entry]);
1377 lp->tx_skbuff[entry] = NULL;
1378 lp->tx_dma_addr[entry] = 0;
1379 }
1380 dirty_tx++;
1381 }
1382
1383 delta = (lp->cur_tx - dirty_tx) & (lp->tx_mod_mask + lp->tx_ring_size);
1384 if (delta > lp->tx_ring_size) {
1385 if (netif_msg_drv(lp))
1386 printk(KERN_ERR
1387 "%s: out-of-sync dirty pointer, %d vs. %d, full=%d.\n",
1388 dev->name, dirty_tx, lp->cur_tx,
1389 lp->tx_full);
1390 dirty_tx += lp->tx_ring_size;
1391 delta -= lp->tx_ring_size;
1392 }
1393
1394 if (lp->tx_full &&
1395 netif_queue_stopped(dev) &&
1396 delta < lp->tx_ring_size - 2) {
1397 /* The ring is no longer full, clear tbusy. */
1398 lp->tx_full = 0;
1399 netif_wake_queue(dev);
1400 }
1401 lp->dirty_tx = dirty_tx;
1402
1403 return must_restart;
1404 }
1405
1406 #ifdef CONFIG_PCNET32_NAPI
1407 static int pcnet32_poll(struct napi_struct *napi, int budget)
1408 {
1409 struct pcnet32_private *lp = container_of(napi, struct pcnet32_private, napi);
1410 struct net_device *dev = lp->dev;
1411 unsigned long ioaddr = dev->base_addr;
1412 unsigned long flags;
1413 int work_done;
1414 u16 val;
1415
1416 work_done = pcnet32_rx(dev, budget);
1417
1418 spin_lock_irqsave(&lp->lock, flags);
1419 if (pcnet32_tx(dev)) {
1420 /* reset the chip to clear the error condition, then restart */
1421 lp->a.reset(ioaddr);
1422 lp->a.write_csr(ioaddr, CSR4, 0x0915); /* auto tx pad */
1423 pcnet32_restart(dev, CSR0_START);
1424 netif_wake_queue(dev);
1425 }
1426 spin_unlock_irqrestore(&lp->lock, flags);
1427
1428 if (work_done < budget) {
1429 spin_lock_irqsave(&lp->lock, flags);
1430
1431 __netif_rx_complete(dev, napi);
1432
1433 /* clear interrupt masks */
1434 val = lp->a.read_csr(ioaddr, CSR3);
1435 val &= 0x00ff;
1436 lp->a.write_csr(ioaddr, CSR3, val);
1437
1438 /* Set interrupt enable. */
1439 lp->a.write_csr(ioaddr, CSR0, CSR0_INTEN);
1440 mmiowb();
1441 spin_unlock_irqrestore(&lp->lock, flags);
1442 }
1443 return work_done;
1444 }
1445 #endif
1446
1447 #define PCNET32_REGS_PER_PHY 32
1448 #define PCNET32_MAX_PHYS 32
1449 static int pcnet32_get_regs_len(struct net_device *dev)
1450 {
1451 struct pcnet32_private *lp = netdev_priv(dev);
1452 int j = lp->phycount * PCNET32_REGS_PER_PHY;
1453
1454 return ((PCNET32_NUM_REGS + j) * sizeof(u16));
1455 }
1456
1457 static void pcnet32_get_regs(struct net_device *dev, struct ethtool_regs *regs,
1458 void *ptr)
1459 {
1460 int i, csr0;
1461 u16 *buff = ptr;
1462 struct pcnet32_private *lp = netdev_priv(dev);
1463 struct pcnet32_access *a = &lp->a;
1464 ulong ioaddr = dev->base_addr;
1465 unsigned long flags;
1466
1467 spin_lock_irqsave(&lp->lock, flags);
1468
1469 csr0 = a->read_csr(ioaddr, CSR0);
1470 if (!(csr0 & CSR0_STOP)) /* If not stopped */
1471 pcnet32_suspend(dev, &flags, 1);
1472
1473 /* read address PROM */
1474 for (i = 0; i < 16; i += 2)
1475 *buff++ = inw(ioaddr + i);
1476
1477 /* read control and status registers */
1478 for (i = 0; i < 90; i++) {
1479 *buff++ = a->read_csr(ioaddr, i);
1480 }
1481
1482 *buff++ = a->read_csr(ioaddr, 112);
1483 *buff++ = a->read_csr(ioaddr, 114);
1484
1485 /* read bus configuration registers */
1486 for (i = 0; i < 30; i++) {
1487 *buff++ = a->read_bcr(ioaddr, i);
1488 }
1489 *buff++ = 0; /* skip bcr30 so as not to hang 79C976 */
1490 for (i = 31; i < 36; i++) {
1491 *buff++ = a->read_bcr(ioaddr, i);
1492 }
1493
1494 /* read mii phy registers */
1495 if (lp->mii) {
1496 int j;
1497 for (j = 0; j < PCNET32_MAX_PHYS; j++) {
1498 if (lp->phymask & (1 << j)) {
1499 for (i = 0; i < PCNET32_REGS_PER_PHY; i++) {
1500 lp->a.write_bcr(ioaddr, 33,
1501 (j << 5) | i);
1502 *buff++ = lp->a.read_bcr(ioaddr, 34);
1503 }
1504 }
1505 }
1506 }
1507
1508 if (!(csr0 & CSR0_STOP)) { /* If not stopped */
1509 int csr5;
1510
1511 /* clear SUSPEND (SPND) - CSR5 bit 0 */
1512 csr5 = a->read_csr(ioaddr, CSR5);
1513 a->write_csr(ioaddr, CSR5, csr5 & (~CSR5_SUSPEND));
1514 }
1515
1516 spin_unlock_irqrestore(&lp->lock, flags);
1517 }
1518
1519 static const struct ethtool_ops pcnet32_ethtool_ops = {
1520 .get_settings = pcnet32_get_settings,
1521 .set_settings = pcnet32_set_settings,
1522 .get_drvinfo = pcnet32_get_drvinfo,
1523 .get_msglevel = pcnet32_get_msglevel,
1524 .set_msglevel = pcnet32_set_msglevel,
1525 .nway_reset = pcnet32_nway_reset,
1526 .get_link = pcnet32_get_link,
1527 .get_ringparam = pcnet32_get_ringparam,
1528 .set_ringparam = pcnet32_set_ringparam,
1529 .get_strings = pcnet32_get_strings,
1530 .self_test = pcnet32_ethtool_test,
1531 .phys_id = pcnet32_phys_id,
1532 .get_regs_len = pcnet32_get_regs_len,
1533 .get_regs = pcnet32_get_regs,
1534 .get_sset_count = pcnet32_get_sset_count,
1535 };
1536
1537 /* only probes for non-PCI devices, the rest are handled by
1538 * pci_register_driver via pcnet32_probe_pci */
1539
1540 static void __devinit pcnet32_probe_vlbus(unsigned int *pcnet32_portlist)
1541 {
1542 unsigned int *port, ioaddr;
1543
1544 /* search for PCnet32 VLB cards at known addresses */
1545 for (port = pcnet32_portlist; (ioaddr = *port); port++) {
1546 if (request_region
1547 (ioaddr, PCNET32_TOTAL_SIZE, "pcnet32_probe_vlbus")) {
1548 /* check if there is really a pcnet chip on that ioaddr */
1549 if ((inb(ioaddr + 14) == 0x57)
1550 && (inb(ioaddr + 15) == 0x57)) {
1551 pcnet32_probe1(ioaddr, 0, NULL);
1552 } else {
1553 release_region(ioaddr, PCNET32_TOTAL_SIZE);
1554 }
1555 }
1556 }
1557 }
1558
1559 static int __devinit
1560 pcnet32_probe_pci(struct pci_dev *pdev, const struct pci_device_id *ent)
1561 {
1562 unsigned long ioaddr;
1563 int err;
1564
1565 err = pci_enable_device(pdev);
1566 if (err < 0) {
1567 if (pcnet32_debug & NETIF_MSG_PROBE)
1568 printk(KERN_ERR PFX
1569 "failed to enable device -- err=%d\n", err);
1570 return err;
1571 }
1572 pci_set_master(pdev);
1573
1574 ioaddr = pci_resource_start(pdev, 0);
1575 if (!ioaddr) {
1576 if (pcnet32_debug & NETIF_MSG_PROBE)
1577 printk(KERN_ERR PFX
1578 "card has no PCI IO resources, aborting\n");
1579 return -ENODEV;
1580 }
1581
1582 if (!pci_dma_supported(pdev, PCNET32_DMA_MASK)) {
1583 if (pcnet32_debug & NETIF_MSG_PROBE)
1584 printk(KERN_ERR PFX
1585 "architecture does not support 32bit PCI busmaster DMA\n");
1586 return -ENODEV;
1587 }
1588 if (request_region(ioaddr, PCNET32_TOTAL_SIZE, "pcnet32_probe_pci") ==
1589 NULL) {
1590 if (pcnet32_debug & NETIF_MSG_PROBE)
1591 printk(KERN_ERR PFX
1592 "io address range already allocated\n");
1593 return -EBUSY;
1594 }
1595
1596 err = pcnet32_probe1(ioaddr, 1, pdev);
1597 if (err < 0) {
1598 pci_disable_device(pdev);
1599 }
1600 return err;
1601 }
1602
1603 /* pcnet32_probe1
1604 * Called from both pcnet32_probe_vlbus and pcnet_probe_pci.
1605 * pdev will be NULL when called from pcnet32_probe_vlbus.
1606 */
1607 static int __devinit
1608 pcnet32_probe1(unsigned long ioaddr, int shared, struct pci_dev *pdev)
1609 {
1610 struct pcnet32_private *lp;
1611 int i, media;
1612 int fdx, mii, fset, dxsuflo;
1613 int chip_version;
1614 char *chipname;
1615 struct net_device *dev;
1616 struct pcnet32_access *a = NULL;
1617 u8 promaddr[6];
1618 int ret = -ENODEV;
1619
1620 /* reset the chip */
1621 pcnet32_wio_reset(ioaddr);
1622
1623 /* NOTE: 16-bit check is first, otherwise some older PCnet chips fail */
1624 if (pcnet32_wio_read_csr(ioaddr, 0) == 4 && pcnet32_wio_check(ioaddr)) {
1625 a = &pcnet32_wio;
1626 } else {
1627 pcnet32_dwio_reset(ioaddr);
1628 if (pcnet32_dwio_read_csr(ioaddr, 0) == 4
1629 && pcnet32_dwio_check(ioaddr)) {
1630 a = &pcnet32_dwio;
1631 } else
1632 goto err_release_region;
1633 }
1634
1635 chip_version =
1636 a->read_csr(ioaddr, 88) | (a->read_csr(ioaddr, 89) << 16);
1637 if ((pcnet32_debug & NETIF_MSG_PROBE) && (pcnet32_debug & NETIF_MSG_HW))
1638 printk(KERN_INFO " PCnet chip version is %#x.\n",
1639 chip_version);
1640 if ((chip_version & 0xfff) != 0x003) {
1641 if (pcnet32_debug & NETIF_MSG_PROBE)
1642 printk(KERN_INFO PFX "Unsupported chip version.\n");
1643 goto err_release_region;
1644 }
1645
1646 /* initialize variables */
1647 fdx = mii = fset = dxsuflo = 0;
1648 chip_version = (chip_version >> 12) & 0xffff;
1649
1650 switch (chip_version) {
1651 case 0x2420:
1652 chipname = "PCnet/PCI 79C970"; /* PCI */
1653 break;
1654 case 0x2430:
1655 if (shared)
1656 chipname = "PCnet/PCI 79C970"; /* 970 gives the wrong chip id back */
1657 else
1658 chipname = "PCnet/32 79C965"; /* 486/VL bus */
1659 break;
1660 case 0x2621:
1661 chipname = "PCnet/PCI II 79C970A"; /* PCI */
1662 fdx = 1;
1663 break;
1664 case 0x2623:
1665 chipname = "PCnet/FAST 79C971"; /* PCI */
1666 fdx = 1;
1667 mii = 1;
1668 fset = 1;
1669 break;
1670 case 0x2624:
1671 chipname = "PCnet/FAST+ 79C972"; /* PCI */
1672 fdx = 1;
1673 mii = 1;
1674 fset = 1;
1675 break;
1676 case 0x2625:
1677 chipname = "PCnet/FAST III 79C973"; /* PCI */
1678 fdx = 1;
1679 mii = 1;
1680 break;
1681 case 0x2626:
1682 chipname = "PCnet/Home 79C978"; /* PCI */
1683 fdx = 1;
1684 /*
1685 * This is based on specs published at www.amd.com. This section
1686 * assumes that a card with a 79C978 wants to go into standard
1687 * ethernet mode. The 79C978 can also go into 1Mb HomePNA mode,
1688 * and the module option homepna=1 can select this instead.
1689 */
1690 media = a->read_bcr(ioaddr, 49);
1691 media &= ~3; /* default to 10Mb ethernet */
1692 if (cards_found < MAX_UNITS && homepna[cards_found])
1693 media |= 1; /* switch to home wiring mode */
1694 if (pcnet32_debug & NETIF_MSG_PROBE)
1695 printk(KERN_DEBUG PFX "media set to %sMbit mode.\n",
1696 (media & 1) ? "1" : "10");
1697 a->write_bcr(ioaddr, 49, media);
1698 break;
1699 case 0x2627:
1700 chipname = "PCnet/FAST III 79C975"; /* PCI */
1701 fdx = 1;
1702 mii = 1;
1703 break;
1704 case 0x2628:
1705 chipname = "PCnet/PRO 79C976";
1706 fdx = 1;
1707 mii = 1;
1708 break;
1709 default:
1710 if (pcnet32_debug & NETIF_MSG_PROBE)
1711 printk(KERN_INFO PFX
1712 "PCnet version %#x, no PCnet32 chip.\n",
1713 chip_version);
1714 goto err_release_region;
1715 }
1716
1717 /*
1718 * On selected chips turn on the BCR18:NOUFLO bit. This stops transmit
1719 * starting until the packet is loaded. Strike one for reliability, lose
1720 * one for latency - although on PCI this isnt a big loss. Older chips
1721 * have FIFO's smaller than a packet, so you can't do this.
1722 * Turn on BCR18:BurstRdEn and BCR18:BurstWrEn.
1723 */
1724
1725 if (fset) {
1726 a->write_bcr(ioaddr, 18, (a->read_bcr(ioaddr, 18) | 0x0860));
1727 a->write_csr(ioaddr, 80,
1728 (a->read_csr(ioaddr, 80) & 0x0C00) | 0x0c00);
1729 dxsuflo = 1;
1730 }
1731
1732 dev = alloc_etherdev(sizeof(*lp));
1733 if (!dev) {
1734 if (pcnet32_debug & NETIF_MSG_PROBE)
1735 printk(KERN_ERR PFX "Memory allocation failed.\n");
1736 ret = -ENOMEM;
1737 goto err_release_region;
1738 }
1739 SET_NETDEV_DEV(dev, &pdev->dev);
1740
1741 if (pcnet32_debug & NETIF_MSG_PROBE)
1742 printk(KERN_INFO PFX "%s at %#3lx,", chipname, ioaddr);
1743
1744 /* In most chips, after a chip reset, the ethernet address is read from the
1745 * station address PROM at the base address and programmed into the
1746 * "Physical Address Registers" CSR12-14.
1747 * As a precautionary measure, we read the PROM values and complain if
1748 * they disagree with the CSRs. If they miscompare, and the PROM addr
1749 * is valid, then the PROM addr is used.
1750 */
1751 for (i = 0; i < 3; i++) {
1752 unsigned int val;
1753 val = a->read_csr(ioaddr, i + 12) & 0x0ffff;
1754 /* There may be endianness issues here. */
1755 dev->dev_addr[2 * i] = val & 0x0ff;
1756 dev->dev_addr[2 * i + 1] = (val >> 8) & 0x0ff;
1757 }
1758
1759 /* read PROM address and compare with CSR address */
1760 for (i = 0; i < 6; i++)
1761 promaddr[i] = inb(ioaddr + i);
1762
1763 if (memcmp(promaddr, dev->dev_addr, 6)
1764 || !is_valid_ether_addr(dev->dev_addr)) {
1765 if (is_valid_ether_addr(promaddr)) {
1766 if (pcnet32_debug & NETIF_MSG_PROBE) {
1767 printk(" warning: CSR address invalid,\n");
1768 printk(KERN_INFO
1769 " using instead PROM address of");
1770 }
1771 memcpy(dev->dev_addr, promaddr, 6);
1772 }
1773 }
1774 memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
1775
1776 /* if the ethernet address is not valid, force to 00:00:00:00:00:00 */
1777 if (!is_valid_ether_addr(dev->perm_addr))
1778 memset(dev->dev_addr, 0, sizeof(dev->dev_addr));
1779
1780 if (pcnet32_debug & NETIF_MSG_PROBE) {
1781 DECLARE_MAC_BUF(mac);
1782 printk(" %s", print_mac(mac, dev->dev_addr));
1783
1784 /* Version 0x2623 and 0x2624 */
1785 if (((chip_version + 1) & 0xfffe) == 0x2624) {
1786 i = a->read_csr(ioaddr, 80) & 0x0C00; /* Check tx_start_pt */
1787 printk("\n" KERN_INFO " tx_start_pt(0x%04x):", i);
1788 switch (i >> 10) {
1789 case 0:
1790 printk(" 20 bytes,");
1791 break;
1792 case 1:
1793 printk(" 64 bytes,");
1794 break;
1795 case 2:
1796 printk(" 128 bytes,");
1797 break;
1798 case 3:
1799 printk("~220 bytes,");
1800 break;
1801 }
1802 i = a->read_bcr(ioaddr, 18); /* Check Burst/Bus control */
1803 printk(" BCR18(%x):", i & 0xffff);
1804 if (i & (1 << 5))
1805 printk("BurstWrEn ");
1806 if (i & (1 << 6))
1807 printk("BurstRdEn ");
1808 if (i & (1 << 7))
1809 printk("DWordIO ");
1810 if (i & (1 << 11))
1811 printk("NoUFlow ");
1812 i = a->read_bcr(ioaddr, 25);
1813 printk("\n" KERN_INFO " SRAMSIZE=0x%04x,", i << 8);
1814 i = a->read_bcr(ioaddr, 26);
1815 printk(" SRAM_BND=0x%04x,", i << 8);
1816 i = a->read_bcr(ioaddr, 27);
1817 if (i & (1 << 14))
1818 printk("LowLatRx");
1819 }
1820 }
1821
1822 dev->base_addr = ioaddr;
1823 lp = netdev_priv(dev);
1824 /* pci_alloc_consistent returns page-aligned memory, so we do not have to check the alignment */
1825 if ((lp->init_block =
1826 pci_alloc_consistent(pdev, sizeof(*lp->init_block), &lp->init_dma_addr)) == NULL) {
1827 if (pcnet32_debug & NETIF_MSG_PROBE)
1828 printk(KERN_ERR PFX
1829 "Consistent memory allocation failed.\n");
1830 ret = -ENOMEM;
1831 goto err_free_netdev;
1832 }
1833 lp->pci_dev = pdev;
1834
1835 lp->dev = dev;
1836
1837 spin_lock_init(&lp->lock);
1838
1839 SET_NETDEV_DEV(dev, &pdev->dev);
1840 lp->name = chipname;
1841 lp->shared_irq = shared;
1842 lp->tx_ring_size = TX_RING_SIZE; /* default tx ring size */
1843 lp->rx_ring_size = RX_RING_SIZE; /* default rx ring size */
1844 lp->tx_mod_mask = lp->tx_ring_size - 1;
1845 lp->rx_mod_mask = lp->rx_ring_size - 1;
1846 lp->tx_len_bits = (PCNET32_LOG_TX_BUFFERS << 12);
1847 lp->rx_len_bits = (PCNET32_LOG_RX_BUFFERS << 4);
1848 lp->mii_if.full_duplex = fdx;
1849 lp->mii_if.phy_id_mask = 0x1f;
1850 lp->mii_if.reg_num_mask = 0x1f;
1851 lp->dxsuflo = dxsuflo;
1852 lp->mii = mii;
1853 lp->chip_version = chip_version;
1854 lp->msg_enable = pcnet32_debug;
1855 if ((cards_found >= MAX_UNITS)
1856 || (options[cards_found] > sizeof(options_mapping)))
1857 lp->options = PCNET32_PORT_ASEL;
1858 else
1859 lp->options = options_mapping[options[cards_found]];
1860 lp->mii_if.dev = dev;
1861 lp->mii_if.mdio_read = mdio_read;
1862 lp->mii_if.mdio_write = mdio_write;
1863
1864 /* napi.weight is used in both the napi and non-napi cases */
1865 lp->napi.weight = lp->rx_ring_size / 2;
1866
1867 #ifdef CONFIG_PCNET32_NAPI
1868 netif_napi_add(dev, &lp->napi, pcnet32_poll, lp->rx_ring_size / 2);
1869 #endif
1870
1871 if (fdx && !(lp->options & PCNET32_PORT_ASEL) &&
1872 ((cards_found >= MAX_UNITS) || full_duplex[cards_found]))
1873 lp->options |= PCNET32_PORT_FD;
1874
1875 if (!a) {
1876 if (pcnet32_debug & NETIF_MSG_PROBE)
1877 printk(KERN_ERR PFX "No access methods\n");
1878 ret = -ENODEV;
1879 goto err_free_consistent;
1880 }
1881 lp->a = *a;
1882
1883 /* prior to register_netdev, dev->name is not yet correct */
1884 if (pcnet32_alloc_ring(dev, pci_name(lp->pci_dev))) {
1885 ret = -ENOMEM;
1886 goto err_free_ring;
1887 }
1888 /* detect special T1/E1 WAN card by checking for MAC address */
1889 if (dev->dev_addr[0] == 0x00 && dev->dev_addr[1] == 0xe0
1890 && dev->dev_addr[2] == 0x75)
1891 lp->options = PCNET32_PORT_FD | PCNET32_PORT_GPSI;
1892
1893 lp->init_block->mode = cpu_to_le16(0x0003); /* Disable Rx and Tx. */
1894 lp->init_block->tlen_rlen =
1895 cpu_to_le16(lp->tx_len_bits | lp->rx_len_bits);
1896 for (i = 0; i < 6; i++)
1897 lp->init_block->phys_addr[i] = dev->dev_addr[i];
1898 lp->init_block->filter[0] = 0x00000000;
1899 lp->init_block->filter[1] = 0x00000000;
1900 lp->init_block->rx_ring = cpu_to_le32(lp->rx_ring_dma_addr);
1901 lp->init_block->tx_ring = cpu_to_le32(lp->tx_ring_dma_addr);
1902
1903 /* switch pcnet32 to 32bit mode */
1904 a->write_bcr(ioaddr, 20, 2);
1905
1906 a->write_csr(ioaddr, 1, (lp->init_dma_addr & 0xffff));
1907 a->write_csr(ioaddr, 2, (lp->init_dma_addr >> 16));
1908
1909 if (pdev) { /* use the IRQ provided by PCI */
1910 dev->irq = pdev->irq;
1911 if (pcnet32_debug & NETIF_MSG_PROBE)
1912 printk(" assigned IRQ %d.\n", dev->irq);
1913 } else {
1914 unsigned long irq_mask = probe_irq_on();
1915
1916 /*
1917 * To auto-IRQ we enable the initialization-done and DMA error
1918 * interrupts. For ISA boards we get a DMA error, but VLB and PCI
1919 * boards will work.
1920 */
1921 /* Trigger an initialization just for the interrupt. */
1922 a->write_csr(ioaddr, CSR0, CSR0_INTEN | CSR0_INIT);
1923 mdelay(1);
1924
1925 dev->irq = probe_irq_off(irq_mask);
1926 if (!dev->irq) {
1927 if (pcnet32_debug & NETIF_MSG_PROBE)
1928 printk(", failed to detect IRQ line.\n");
1929 ret = -ENODEV;
1930 goto err_free_ring;
1931 }
1932 if (pcnet32_debug & NETIF_MSG_PROBE)
1933 printk(", probed IRQ %d.\n", dev->irq);
1934 }
1935
1936 /* Set the mii phy_id so that we can query the link state */
1937 if (lp->mii) {
1938 /* lp->phycount and lp->phymask are set to 0 by memset above */
1939
1940 lp->mii_if.phy_id = ((lp->a.read_bcr(ioaddr, 33)) >> 5) & 0x1f;
1941 /* scan for PHYs */
1942 for (i = 0; i < PCNET32_MAX_PHYS; i++) {
1943 unsigned short id1, id2;
1944
1945 id1 = mdio_read(dev, i, MII_PHYSID1);
1946 if (id1 == 0xffff)
1947 continue;
1948 id2 = mdio_read(dev, i, MII_PHYSID2);
1949 if (id2 == 0xffff)
1950 continue;
1951 if (i == 31 && ((chip_version + 1) & 0xfffe) == 0x2624)
1952 continue; /* 79C971 & 79C972 have phantom phy at id 31 */
1953 lp->phycount++;
1954 lp->phymask |= (1 << i);
1955 lp->mii_if.phy_id = i;
1956 if (pcnet32_debug & NETIF_MSG_PROBE)
1957 printk(KERN_INFO PFX
1958 "Found PHY %04x:%04x at address %d.\n",
1959 id1, id2, i);
1960 }
1961 lp->a.write_bcr(ioaddr, 33, (lp->mii_if.phy_id) << 5);
1962 if (lp->phycount > 1) {
1963 lp->options |= PCNET32_PORT_MII;
1964 }
1965 }
1966
1967 init_timer(&lp->watchdog_timer);
1968 lp->watchdog_timer.data = (unsigned long)dev;
1969 lp->watchdog_timer.function = (void *)&pcnet32_watchdog;
1970
1971 /* The PCNET32-specific entries in the device structure. */
1972 dev->open = &pcnet32_open;
1973 dev->hard_start_xmit = &pcnet32_start_xmit;
1974 dev->stop = &pcnet32_close;
1975 dev->get_stats = &pcnet32_get_stats;
1976 dev->set_multicast_list = &pcnet32_set_multicast_list;
1977 dev->do_ioctl = &pcnet32_ioctl;
1978 dev->ethtool_ops = &pcnet32_ethtool_ops;
1979 dev->tx_timeout = pcnet32_tx_timeout;
1980 dev->watchdog_timeo = (5 * HZ);
1981
1982 #ifdef CONFIG_NET_POLL_CONTROLLER
1983 dev->poll_controller = pcnet32_poll_controller;
1984 #endif
1985
1986 /* Fill in the generic fields of the device structure. */
1987 if (register_netdev(dev))
1988 goto err_free_ring;
1989
1990 if (pdev) {
1991 pci_set_drvdata(pdev, dev);
1992 } else {
1993 lp->next = pcnet32_dev;
1994 pcnet32_dev = dev;
1995 }
1996
1997 if (pcnet32_debug & NETIF_MSG_PROBE)
1998 printk(KERN_INFO "%s: registered as %s\n", dev->name, lp->name);
1999 cards_found++;
2000
2001 /* enable LED writes */
2002 a->write_bcr(ioaddr, 2, a->read_bcr(ioaddr, 2) | 0x1000);
2003
2004 return 0;
2005
2006 err_free_ring:
2007 pcnet32_free_ring(dev);
2008 err_free_consistent:
2009 pci_free_consistent(lp->pci_dev, sizeof(*lp->init_block),
2010 lp->init_block, lp->init_dma_addr);
2011 err_free_netdev:
2012 free_netdev(dev);
2013 err_release_region:
2014 release_region(ioaddr, PCNET32_TOTAL_SIZE);
2015 return ret;
2016 }
2017
2018 /* if any allocation fails, caller must also call pcnet32_free_ring */
2019 static int pcnet32_alloc_ring(struct net_device *dev, char *name)
2020 {
2021 struct pcnet32_private *lp = netdev_priv(dev);
2022
2023 lp->tx_ring = pci_alloc_consistent(lp->pci_dev,
2024 sizeof(struct pcnet32_tx_head) *
2025 lp->tx_ring_size,
2026 &lp->tx_ring_dma_addr);
2027 if (lp->tx_ring == NULL) {
2028 if (netif_msg_drv(lp))
2029 printk("\n" KERN_ERR PFX
2030 "%s: Consistent memory allocation failed.\n",
2031 name);
2032 return -ENOMEM;
2033 }
2034
2035 lp->rx_ring = pci_alloc_consistent(lp->pci_dev,
2036 sizeof(struct pcnet32_rx_head) *
2037 lp->rx_ring_size,
2038 &lp->rx_ring_dma_addr);
2039 if (lp->rx_ring == NULL) {
2040 if (netif_msg_drv(lp))
2041 printk("\n" KERN_ERR PFX
2042 "%s: Consistent memory allocation failed.\n",
2043 name);
2044 return -ENOMEM;
2045 }
2046
2047 lp->tx_dma_addr = kcalloc(lp->tx_ring_size, sizeof(dma_addr_t),
2048 GFP_ATOMIC);
2049 if (!lp->tx_dma_addr) {
2050 if (netif_msg_drv(lp))
2051 printk("\n" KERN_ERR PFX
2052 "%s: Memory allocation failed.\n", name);
2053 return -ENOMEM;
2054 }
2055
2056 lp->rx_dma_addr = kcalloc(lp->rx_ring_size, sizeof(dma_addr_t),
2057 GFP_ATOMIC);
2058 if (!lp->rx_dma_addr) {
2059 if (netif_msg_drv(lp))
2060 printk("\n" KERN_ERR PFX
2061 "%s: Memory allocation failed.\n", name);
2062 return -ENOMEM;
2063 }
2064
2065 lp->tx_skbuff = kcalloc(lp->tx_ring_size, sizeof(struct sk_buff *),
2066 GFP_ATOMIC);
2067 if (!lp->tx_skbuff) {
2068 if (netif_msg_drv(lp))
2069 printk("\n" KERN_ERR PFX
2070 "%s: Memory allocation failed.\n", name);
2071 return -ENOMEM;
2072 }
2073
2074 lp->rx_skbuff = kcalloc(lp->rx_ring_size, sizeof(struct sk_buff *),
2075 GFP_ATOMIC);
2076 if (!lp->rx_skbuff) {
2077 if (netif_msg_drv(lp))
2078 printk("\n" KERN_ERR PFX
2079 "%s: Memory allocation failed.\n", name);
2080 return -ENOMEM;
2081 }
2082
2083 return 0;
2084 }
2085
2086 static void pcnet32_free_ring(struct net_device *dev)
2087 {
2088 struct pcnet32_private *lp = netdev_priv(dev);
2089
2090 kfree(lp->tx_skbuff);
2091 lp->tx_skbuff = NULL;
2092
2093 kfree(lp->rx_skbuff);
2094 lp->rx_skbuff = NULL;
2095
2096 kfree(lp->tx_dma_addr);
2097 lp->tx_dma_addr = NULL;
2098
2099 kfree(lp->rx_dma_addr);
2100 lp->rx_dma_addr = NULL;
2101
2102 if (lp->tx_ring) {
2103 pci_free_consistent(lp->pci_dev,
2104 sizeof(struct pcnet32_tx_head) *
2105 lp->tx_ring_size, lp->tx_ring,
2106 lp->tx_ring_dma_addr);
2107 lp->tx_ring = NULL;
2108 }
2109
2110 if (lp->rx_ring) {
2111 pci_free_consistent(lp->pci_dev,
2112 sizeof(struct pcnet32_rx_head) *
2113 lp->rx_ring_size, lp->rx_ring,
2114 lp->rx_ring_dma_addr);
2115 lp->rx_ring = NULL;
2116 }
2117 }
2118
2119 static int pcnet32_open(struct net_device *dev)
2120 {
2121 struct pcnet32_private *lp = netdev_priv(dev);
2122 unsigned long ioaddr = dev->base_addr;
2123 u16 val;
2124 int i;
2125 int rc;
2126 unsigned long flags;
2127
2128 if (request_irq(dev->irq, &pcnet32_interrupt,
2129 lp->shared_irq ? IRQF_SHARED : 0, dev->name,
2130 (void *)dev)) {
2131 return -EAGAIN;
2132 }
2133
2134 spin_lock_irqsave(&lp->lock, flags);
2135 /* Check for a valid station address */
2136 if (!is_valid_ether_addr(dev->dev_addr)) {
2137 rc = -EINVAL;
2138 goto err_free_irq;
2139 }
2140
2141 /* Reset the PCNET32 */
2142 lp->a.reset(ioaddr);
2143
2144 /* switch pcnet32 to 32bit mode */
2145 lp->a.write_bcr(ioaddr, 20, 2);
2146
2147 if (netif_msg_ifup(lp))
2148 printk(KERN_DEBUG
2149 "%s: pcnet32_open() irq %d tx/rx rings %#x/%#x init %#x.\n",
2150 dev->name, dev->irq, (u32) (lp->tx_ring_dma_addr),
2151 (u32) (lp->rx_ring_dma_addr),
2152 (u32) (lp->init_dma_addr));
2153
2154 /* set/reset autoselect bit */
2155 val = lp->a.read_bcr(ioaddr, 2) & ~2;
2156 if (lp->options & PCNET32_PORT_ASEL)
2157 val |= 2;
2158 lp->a.write_bcr(ioaddr, 2, val);
2159
2160 /* handle full duplex setting */
2161 if (lp->mii_if.full_duplex) {
2162 val = lp->a.read_bcr(ioaddr, 9) & ~3;
2163 if (lp->options & PCNET32_PORT_FD) {
2164 val |= 1;
2165 if (lp->options == (PCNET32_PORT_FD | PCNET32_PORT_AUI))
2166 val |= 2;
2167 } else if (lp->options & PCNET32_PORT_ASEL) {
2168 /* workaround of xSeries250, turn on for 79C975 only */
2169 if (lp->chip_version == 0x2627)
2170 val |= 3;
2171 }
2172 lp->a.write_bcr(ioaddr, 9, val);
2173 }
2174
2175 /* set/reset GPSI bit in test register */
2176 val = lp->a.read_csr(ioaddr, 124) & ~0x10;
2177 if ((lp->options & PCNET32_PORT_PORTSEL) == PCNET32_PORT_GPSI)
2178 val |= 0x10;
2179 lp->a.write_csr(ioaddr, 124, val);
2180
2181 /* Allied Telesyn AT 2700/2701 FX are 100Mbit only and do not negotiate */
2182 if (lp->pci_dev->subsystem_vendor == PCI_VENDOR_ID_AT &&
2183 (lp->pci_dev->subsystem_device == PCI_SUBDEVICE_ID_AT_2700FX ||
2184 lp->pci_dev->subsystem_device == PCI_SUBDEVICE_ID_AT_2701FX)) {
2185 if (lp->options & PCNET32_PORT_ASEL) {
2186 lp->options = PCNET32_PORT_FD | PCNET32_PORT_100;
2187 if (netif_msg_link(lp))
2188 printk(KERN_DEBUG
2189 "%s: Setting 100Mb-Full Duplex.\n",
2190 dev->name);
2191 }
2192 }
2193 if (lp->phycount < 2) {
2194 /*
2195 * 24 Jun 2004 according AMD, in order to change the PHY,
2196 * DANAS (or DISPM for 79C976) must be set; then select the speed,
2197 * duplex, and/or enable auto negotiation, and clear DANAS
2198 */
2199 if (lp->mii && !(lp->options & PCNET32_PORT_ASEL)) {
2200 lp->a.write_bcr(ioaddr, 32,
2201 lp->a.read_bcr(ioaddr, 32) | 0x0080);
2202 /* disable Auto Negotiation, set 10Mpbs, HD */
2203 val = lp->a.read_bcr(ioaddr, 32) & ~0xb8;
2204 if (lp->options & PCNET32_PORT_FD)
2205 val |= 0x10;
2206 if (lp->options & PCNET32_PORT_100)
2207 val |= 0x08;
2208 lp->a.write_bcr(ioaddr, 32, val);
2209 } else {
2210 if (lp->options & PCNET32_PORT_ASEL) {
2211 lp->a.write_bcr(ioaddr, 32,
2212 lp->a.read_bcr(ioaddr,
2213 32) | 0x0080);
2214 /* enable auto negotiate, setup, disable fd */
2215 val = lp->a.read_bcr(ioaddr, 32) & ~0x98;
2216 val |= 0x20;
2217 lp->a.write_bcr(ioaddr, 32, val);
2218 }
2219 }
2220 } else {
2221 int first_phy = -1;
2222 u16 bmcr;
2223 u32 bcr9;
2224 struct ethtool_cmd ecmd;
2225
2226 /*
2227 * There is really no good other way to handle multiple PHYs
2228 * other than turning off all automatics
2229 */
2230 val = lp->a.read_bcr(ioaddr, 2);
2231 lp->a.write_bcr(ioaddr, 2, val & ~2);
2232 val = lp->a.read_bcr(ioaddr, 32);
2233 lp->a.write_bcr(ioaddr, 32, val & ~(1 << 7)); /* stop MII manager */
2234
2235 if (!(lp->options & PCNET32_PORT_ASEL)) {
2236 /* setup ecmd */
2237 ecmd.port = PORT_MII;
2238 ecmd.transceiver = XCVR_INTERNAL;
2239 ecmd.autoneg = AUTONEG_DISABLE;
2240 ecmd.speed =
2241 lp->
2242 options & PCNET32_PORT_100 ? SPEED_100 : SPEED_10;
2243 bcr9 = lp->a.read_bcr(ioaddr, 9);
2244
2245 if (lp->options & PCNET32_PORT_FD) {
2246 ecmd.duplex = DUPLEX_FULL;
2247 bcr9 |= (1 << 0);
2248 } else {
2249 ecmd.duplex = DUPLEX_HALF;
2250 bcr9 |= ~(1 << 0);
2251 }
2252 lp->a.write_bcr(ioaddr, 9, bcr9);
2253 }
2254
2255 for (i = 0; i < PCNET32_MAX_PHYS; i++) {
2256 if (lp->phymask & (1 << i)) {
2257 /* isolate all but the first PHY */
2258 bmcr = mdio_read(dev, i, MII_BMCR);
2259 if (first_phy == -1) {
2260 first_phy = i;
2261 mdio_write(dev, i, MII_BMCR,
2262 bmcr & ~BMCR_ISOLATE);
2263 } else {
2264 mdio_write(dev, i, MII_BMCR,
2265 bmcr | BMCR_ISOLATE);
2266 }
2267 /* use mii_ethtool_sset to setup PHY */
2268 lp->mii_if.phy_id = i;
2269 ecmd.phy_address = i;
2270 if (lp->options & PCNET32_PORT_ASEL) {
2271 mii_ethtool_gset(&lp->mii_if, &ecmd);
2272 ecmd.autoneg = AUTONEG_ENABLE;
2273 }
2274 mii_ethtool_sset(&lp->mii_if, &ecmd);
2275 }
2276 }
2277 lp->mii_if.phy_id = first_phy;
2278 if (netif_msg_link(lp))
2279 printk(KERN_INFO "%s: Using PHY number %d.\n",
2280 dev->name, first_phy);
2281 }
2282
2283 #ifdef DO_DXSUFLO
2284 if (lp->dxsuflo) { /* Disable transmit stop on underflow */
2285 val = lp->a.read_csr(ioaddr, CSR3);
2286 val |= 0x40;
2287 lp->a.write_csr(ioaddr, CSR3, val);
2288 }
2289 #endif
2290
2291 lp->init_block->mode =
2292 cpu_to_le16((lp->options & PCNET32_PORT_PORTSEL) << 7);
2293 pcnet32_load_multicast(dev);
2294
2295 if (pcnet32_init_ring(dev)) {
2296 rc = -ENOMEM;
2297 goto err_free_ring;
2298 }
2299
2300 #ifdef CONFIG_PCNET32_NAPI
2301 napi_enable(&lp->napi);
2302 #endif
2303
2304 /* Re-initialize the PCNET32, and start it when done. */
2305 lp->a.write_csr(ioaddr, 1, (lp->init_dma_addr & 0xffff));
2306 lp->a.write_csr(ioaddr, 2, (lp->init_dma_addr >> 16));
2307
2308 lp->a.write_csr(ioaddr, CSR4, 0x0915); /* auto tx pad */
2309 lp->a.write_csr(ioaddr, CSR0, CSR0_INIT);
2310
2311 netif_start_queue(dev);
2312
2313 if (lp->chip_version >= PCNET32_79C970A) {
2314 /* Print the link status and start the watchdog */
2315 pcnet32_check_media(dev, 1);
2316 mod_timer(&(lp->watchdog_timer), PCNET32_WATCHDOG_TIMEOUT);
2317 }
2318
2319 i = 0;
2320 while (i++ < 100)
2321 if (lp->a.read_csr(ioaddr, CSR0) & CSR0_IDON)
2322 break;
2323 /*
2324 * We used to clear the InitDone bit, 0x0100, here but Mark Stockton
2325 * reports that doing so triggers a bug in the '974.
2326 */
2327 lp->a.write_csr(ioaddr, CSR0, CSR0_NORMAL);
2328
2329 if (netif_msg_ifup(lp))
2330 printk(KERN_DEBUG
2331 "%s: pcnet32 open after %d ticks, init block %#x csr0 %4.4x.\n",
2332 dev->name, i,
2333 (u32) (lp->init_dma_addr),
2334 lp->a.read_csr(ioaddr, CSR0));
2335
2336 spin_unlock_irqrestore(&lp->lock, flags);
2337
2338 return 0; /* Always succeed */
2339
2340 err_free_ring:
2341 /* free any allocated skbuffs */
2342 pcnet32_purge_rx_ring(dev);
2343
2344 /*
2345 * Switch back to 16bit mode to avoid problems with dumb
2346 * DOS packet driver after a warm reboot
2347 */
2348 lp->a.write_bcr(ioaddr, 20, 4);
2349
2350 err_free_irq:
2351 spin_unlock_irqrestore(&lp->lock, flags);
2352 free_irq(dev->irq, dev);
2353 return rc;
2354 }
2355
2356 /*
2357 * The LANCE has been halted for one reason or another (busmaster memory
2358 * arbitration error, Tx FIFO underflow, driver stopped it to reconfigure,
2359 * etc.). Modern LANCE variants always reload their ring-buffer
2360 * configuration when restarted, so we must reinitialize our ring
2361 * context before restarting. As part of this reinitialization,
2362 * find all packets still on the Tx ring and pretend that they had been
2363 * sent (in effect, drop the packets on the floor) - the higher-level
2364 * protocols will time out and retransmit. It'd be better to shuffle
2365 * these skbs to a temp list and then actually re-Tx them after
2366 * restarting the chip, but I'm too lazy to do so right now. dplatt@3do.com
2367 */
2368
2369 static void pcnet32_purge_tx_ring(struct net_device *dev)
2370 {
2371 struct pcnet32_private *lp = netdev_priv(dev);
2372 int i;
2373
2374 for (i = 0; i < lp->tx_ring_size; i++) {
2375 lp->tx_ring[i].status = 0; /* CPU owns buffer */
2376 wmb(); /* Make sure adapter sees owner change */
2377 if (lp->tx_skbuff[i]) {
2378 pci_unmap_single(lp->pci_dev, lp->tx_dma_addr[i],
2379 lp->tx_skbuff[i]->len,
2380 PCI_DMA_TODEVICE);
2381 dev_kfree_skb_any(lp->tx_skbuff[i]);
2382 }
2383 lp->tx_skbuff[i] = NULL;
2384 lp->tx_dma_addr[i] = 0;
2385 }
2386 }
2387
2388 /* Initialize the PCNET32 Rx and Tx rings. */
2389 static int pcnet32_init_ring(struct net_device *dev)
2390 {
2391 struct pcnet32_private *lp = netdev_priv(dev);
2392 int i;
2393
2394 lp->tx_full = 0;
2395 lp->cur_rx = lp->cur_tx = 0;
2396 lp->dirty_rx = lp->dirty_tx = 0;
2397
2398 for (i = 0; i < lp->rx_ring_size; i++) {
2399 struct sk_buff *rx_skbuff = lp->rx_skbuff[i];
2400 if (rx_skbuff == NULL) {
2401 if (!
2402 (rx_skbuff = lp->rx_skbuff[i] =
2403 dev_alloc_skb(PKT_BUF_SKB))) {
2404 /* there is not much, we can do at this point */
2405 if (netif_msg_drv(lp))
2406 printk(KERN_ERR
2407 "%s: pcnet32_init_ring dev_alloc_skb failed.\n",
2408 dev->name);
2409 return -1;
2410 }
2411 skb_reserve(rx_skbuff, NET_IP_ALIGN);
2412 }
2413
2414 rmb();
2415 if (lp->rx_dma_addr[i] == 0)
2416 lp->rx_dma_addr[i] =
2417 pci_map_single(lp->pci_dev, rx_skbuff->data,
2418 PKT_BUF_SIZE, PCI_DMA_FROMDEVICE);
2419 lp->rx_ring[i].base = cpu_to_le32(lp->rx_dma_addr[i]);
2420 lp->rx_ring[i].buf_length = cpu_to_le16(NEG_BUF_SIZE);
2421 wmb(); /* Make sure owner changes after all others are visible */
2422 lp->rx_ring[i].status = cpu_to_le16(0x8000);
2423 }
2424 /* The Tx buffer address is filled in as needed, but we do need to clear
2425 * the upper ownership bit. */
2426 for (i = 0; i < lp->tx_ring_size; i++) {
2427 lp->tx_ring[i].status = 0; /* CPU owns buffer */
2428 wmb(); /* Make sure adapter sees owner change */
2429 lp->tx_ring[i].base = 0;
2430 lp->tx_dma_addr[i] = 0;
2431 }
2432
2433 lp->init_block->tlen_rlen =
2434 cpu_to_le16(lp->tx_len_bits | lp->rx_len_bits);
2435 for (i = 0; i < 6; i++)
2436 lp->init_block->phys_addr[i] = dev->dev_addr[i];
2437 lp->init_block->rx_ring = cpu_to_le32(lp->rx_ring_dma_addr);
2438 lp->init_block->tx_ring = cpu_to_le32(lp->tx_ring_dma_addr);
2439 wmb(); /* Make sure all changes are visible */
2440 return 0;
2441 }
2442
2443 /* the pcnet32 has been issued a stop or reset. Wait for the stop bit
2444 * then flush the pending transmit operations, re-initialize the ring,
2445 * and tell the chip to initialize.
2446 */
2447 static void pcnet32_restart(struct net_device *dev, unsigned int csr0_bits)
2448 {
2449 struct pcnet32_private *lp = netdev_priv(dev);
2450 unsigned long ioaddr = dev->base_addr;
2451 int i;
2452
2453 /* wait for stop */
2454 for (i = 0; i < 100; i++)
2455 if (lp->a.read_csr(ioaddr, CSR0) & CSR0_STOP)
2456 break;
2457
2458 if (i >= 100 && netif_msg_drv(lp))
2459 printk(KERN_ERR
2460 "%s: pcnet32_restart timed out waiting for stop.\n",
2461 dev->name);
2462
2463 pcnet32_purge_tx_ring(dev);
2464 if (pcnet32_init_ring(dev))
2465 return;
2466
2467 /* ReInit Ring */
2468 lp->a.write_csr(ioaddr, CSR0, CSR0_INIT);
2469 i = 0;
2470 while (i++ < 1000)
2471 if (lp->a.read_csr(ioaddr, CSR0) & CSR0_IDON)
2472 break;
2473
2474 lp->a.write_csr(ioaddr, CSR0, csr0_bits);
2475 }
2476
2477 static void pcnet32_tx_timeout(struct net_device *dev)
2478 {
2479 struct pcnet32_private *lp = netdev_priv(dev);
2480 unsigned long ioaddr = dev->base_addr, flags;
2481
2482 spin_lock_irqsave(&lp->lock, flags);
2483 /* Transmitter timeout, serious problems. */
2484 if (pcnet32_debug & NETIF_MSG_DRV)
2485 printk(KERN_ERR
2486 "%s: transmit timed out, status %4.4x, resetting.\n",
2487 dev->name, lp->a.read_csr(ioaddr, CSR0));
2488 lp->a.write_csr(ioaddr, CSR0, CSR0_STOP);
2489 dev->stats.tx_errors++;
2490 if (netif_msg_tx_err(lp)) {
2491 int i;
2492 printk(KERN_DEBUG
2493 " Ring data dump: dirty_tx %d cur_tx %d%s cur_rx %d.",
2494 lp->dirty_tx, lp->cur_tx, lp->tx_full ? " (full)" : "",
2495 lp->cur_rx);
2496 for (i = 0; i < lp->rx_ring_size; i++)
2497 printk("%s %08x %04x %08x %04x", i & 1 ? "" : "\n ",
2498 le32_to_cpu(lp->rx_ring[i].base),
2499 (-le16_to_cpu(lp->rx_ring[i].buf_length)) &
2500 0xffff, le32_to_cpu(lp->rx_ring[i].msg_length),
2501 le16_to_cpu(lp->rx_ring[i].status));
2502 for (i = 0; i < lp->tx_ring_size; i++)
2503 printk("%s %08x %04x %08x %04x", i & 1 ? "" : "\n ",
2504 le32_to_cpu(lp->tx_ring[i].base),
2505 (-le16_to_cpu(lp->tx_ring[i].length)) & 0xffff,
2506 le32_to_cpu(lp->tx_ring[i].misc),
2507 le16_to_cpu(lp->tx_ring[i].status));
2508 printk("\n");
2509 }
2510 pcnet32_restart(dev, CSR0_NORMAL);
2511
2512 dev->trans_start = jiffies;
2513 netif_wake_queue(dev);
2514
2515 spin_unlock_irqrestore(&lp->lock, flags);
2516 }
2517
2518 static int pcnet32_start_xmit(struct sk_buff *skb, struct net_device *dev)
2519 {
2520 struct pcnet32_private *lp = netdev_priv(dev);
2521 unsigned long ioaddr = dev->base_addr;
2522 u16 status;
2523 int entry;
2524 unsigned long flags;
2525
2526 spin_lock_irqsave(&lp->lock, flags);
2527
2528 if (netif_msg_tx_queued(lp)) {
2529 printk(KERN_DEBUG
2530 "%s: pcnet32_start_xmit() called, csr0 %4.4x.\n",
2531 dev->name, lp->a.read_csr(ioaddr, CSR0));
2532 }
2533
2534 /* Default status -- will not enable Successful-TxDone
2535 * interrupt when that option is available to us.
2536 */
2537 status = 0x8300;
2538
2539 /* Fill in a Tx ring entry */
2540
2541 /* Mask to ring buffer boundary. */
2542 entry = lp->cur_tx & lp->tx_mod_mask;
2543
2544 /* Caution: the write order is important here, set the status
2545 * with the "ownership" bits last. */
2546
2547 lp->tx_ring[entry].length = cpu_to_le16(-skb->len);
2548
2549 lp->tx_ring[entry].misc = 0x00000000;
2550
2551 lp->tx_skbuff[entry] = skb;
2552 lp->tx_dma_addr[entry] =
2553 pci_map_single(lp->pci_dev, skb->data, skb->len, PCI_DMA_TODEVICE);
2554 lp->tx_ring[entry].base = cpu_to_le32(lp->tx_dma_addr[entry]);
2555 wmb(); /* Make sure owner changes after all others are visible */
2556 lp->tx_ring[entry].status = cpu_to_le16(status);
2557
2558 lp->cur_tx++;
2559 dev->stats.tx_bytes += skb->len;
2560
2561 /* Trigger an immediate send poll. */
2562 lp->a.write_csr(ioaddr, CSR0, CSR0_INTEN | CSR0_TXPOLL);
2563
2564 dev->trans_start = jiffies;
2565
2566 if (lp->tx_ring[(entry + 1) & lp->tx_mod_mask].base != 0) {
2567 lp->tx_full = 1;
2568 netif_stop_queue(dev);
2569 }
2570 spin_unlock_irqrestore(&lp->lock, flags);
2571 return 0;
2572 }
2573
2574 /* The PCNET32 interrupt handler. */
2575 static irqreturn_t
2576 pcnet32_interrupt(int irq, void *dev_id)
2577 {
2578 struct net_device *dev = dev_id;
2579 struct pcnet32_private *lp;
2580 unsigned long ioaddr;
2581 u16 csr0;
2582 int boguscnt = max_interrupt_work;
2583
2584 ioaddr = dev->base_addr;
2585 lp = netdev_priv(dev);
2586
2587 spin_lock(&lp->lock);
2588
2589 csr0 = lp->a.read_csr(ioaddr, CSR0);
2590 while ((csr0 & 0x8f00) && --boguscnt >= 0) {
2591 if (csr0 == 0xffff) {
2592 break; /* PCMCIA remove happened */
2593 }
2594 /* Acknowledge all of the current interrupt sources ASAP. */
2595 lp->a.write_csr(ioaddr, CSR0, csr0 & ~0x004f);
2596
2597 if (netif_msg_intr(lp))
2598 printk(KERN_DEBUG
2599 "%s: interrupt csr0=%#2.2x new csr=%#2.2x.\n",
2600 dev->name, csr0, lp->a.read_csr(ioaddr, CSR0));
2601
2602 /* Log misc errors. */
2603 if (csr0 & 0x4000)
2604 dev->stats.tx_errors++; /* Tx babble. */
2605 if (csr0 & 0x1000) {
2606 /*
2607 * This happens when our receive ring is full. This
2608 * shouldn't be a problem as we will see normal rx
2609 * interrupts for the frames in the receive ring. But
2610 * there are some PCI chipsets (I can reproduce this
2611 * on SP3G with Intel saturn chipset) which have
2612 * sometimes problems and will fill up the receive
2613 * ring with error descriptors. In this situation we
2614 * don't get a rx interrupt, but a missed frame
2615 * interrupt sooner or later.
2616 */
2617 dev->stats.rx_errors++; /* Missed a Rx frame. */
2618 }
2619 if (csr0 & 0x0800) {
2620 if (netif_msg_drv(lp))
2621 printk(KERN_ERR
2622 "%s: Bus master arbitration failure, status %4.4x.\n",
2623 dev->name, csr0);
2624 /* unlike for the lance, there is no restart needed */
2625 }
2626 #ifdef CONFIG_PCNET32_NAPI
2627 if (netif_rx_schedule_prep(dev, &lp->napi)) {
2628 u16 val;
2629 /* set interrupt masks */
2630 val = lp->a.read_csr(ioaddr, CSR3);
2631 val |= 0x5f00;
2632 lp->a.write_csr(ioaddr, CSR3, val);
2633 mmiowb();
2634 __netif_rx_schedule(dev, &lp->napi);
2635 break;
2636 }
2637 #else
2638 pcnet32_rx(dev, lp->napi.weight);
2639 if (pcnet32_tx(dev)) {
2640 /* reset the chip to clear the error condition, then restart */
2641 lp->a.reset(ioaddr);
2642 lp->a.write_csr(ioaddr, CSR4, 0x0915); /* auto tx pad */
2643 pcnet32_restart(dev, CSR0_START);
2644 netif_wake_queue(dev);
2645 }
2646 #endif
2647 csr0 = lp->a.read_csr(ioaddr, CSR0);
2648 }
2649
2650 #ifndef CONFIG_PCNET32_NAPI
2651 /* Set interrupt enable. */
2652 lp->a.write_csr(ioaddr, CSR0, CSR0_INTEN);
2653 #endif
2654
2655 if (netif_msg_intr(lp))
2656 printk(KERN_DEBUG "%s: exiting interrupt, csr0=%#4.4x.\n",
2657 dev->name, lp->a.read_csr(ioaddr, CSR0));
2658
2659 spin_unlock(&lp->lock);
2660
2661 return IRQ_HANDLED;
2662 }
2663
2664 static int pcnet32_close(struct net_device *dev)
2665 {
2666 unsigned long ioaddr = dev->base_addr;
2667 struct pcnet32_private *lp = netdev_priv(dev);
2668 unsigned long flags;
2669
2670 del_timer_sync(&lp->watchdog_timer);
2671
2672 netif_stop_queue(dev);
2673 #ifdef CONFIG_PCNET32_NAPI
2674 napi_disable(&lp->napi);
2675 #endif
2676
2677 spin_lock_irqsave(&lp->lock, flags);
2678
2679 dev->stats.rx_missed_errors = lp->a.read_csr(ioaddr, 112);
2680
2681 if (netif_msg_ifdown(lp))
2682 printk(KERN_DEBUG
2683 "%s: Shutting down ethercard, status was %2.2x.\n",
2684 dev->name, lp->a.read_csr(ioaddr, CSR0));
2685
2686 /* We stop the PCNET32 here -- it occasionally polls memory if we don't. */
2687 lp->a.write_csr(ioaddr, CSR0, CSR0_STOP);
2688
2689 /*
2690 * Switch back to 16bit mode to avoid problems with dumb
2691 * DOS packet driver after a warm reboot
2692 */
2693 lp->a.write_bcr(ioaddr, 20, 4);
2694
2695 spin_unlock_irqrestore(&lp->lock, flags);
2696
2697 free_irq(dev->irq, dev);
2698
2699 spin_lock_irqsave(&lp->lock, flags);
2700
2701 pcnet32_purge_rx_ring(dev);
2702 pcnet32_purge_tx_ring(dev);
2703
2704 spin_unlock_irqrestore(&lp->lock, flags);
2705
2706 return 0;
2707 }
2708
2709 static struct net_device_stats *pcnet32_get_stats(struct net_device *dev)
2710 {
2711 struct pcnet32_private *lp = netdev_priv(dev);
2712 unsigned long ioaddr = dev->base_addr;
2713 unsigned long flags;
2714
2715 spin_lock_irqsave(&lp->lock, flags);
2716 dev->stats.rx_missed_errors = lp->a.read_csr(ioaddr, 112);
2717 spin_unlock_irqrestore(&lp->lock, flags);
2718
2719 return &dev->stats;
2720 }
2721
2722 /* taken from the sunlance driver, which it took from the depca driver */
2723 static void pcnet32_load_multicast(struct net_device *dev)
2724 {
2725 struct pcnet32_private *lp = netdev_priv(dev);
2726 volatile struct pcnet32_init_block *ib = lp->init_block;
2727 volatile __le16 *mcast_table = (__le16 *)ib->filter;
2728 struct dev_mc_list *dmi = dev->mc_list;
2729 unsigned long ioaddr = dev->base_addr;
2730 char *addrs;
2731 int i;
2732 u32 crc;
2733
2734 /* set all multicast bits */
2735 if (dev->flags & IFF_ALLMULTI) {
2736 ib->filter[0] = cpu_to_le32(~0U);
2737 ib->filter[1] = cpu_to_le32(~0U);
2738 lp->a.write_csr(ioaddr, PCNET32_MC_FILTER, 0xffff);
2739 lp->a.write_csr(ioaddr, PCNET32_MC_FILTER+1, 0xffff);
2740 lp->a.write_csr(ioaddr, PCNET32_MC_FILTER+2, 0xffff);
2741 lp->a.write_csr(ioaddr, PCNET32_MC_FILTER+3, 0xffff);
2742 return;
2743 }
2744 /* clear the multicast filter */
2745 ib->filter[0] = 0;
2746 ib->filter[1] = 0;
2747
2748 /* Add addresses */
2749 for (i = 0; i < dev->mc_count; i++) {
2750 addrs = dmi->dmi_addr;
2751 dmi = dmi->next;
2752
2753 /* multicast address? */
2754 if (!(*addrs & 1))
2755 continue;
2756
2757 crc = ether_crc_le(6, addrs);
2758 crc = crc >> 26;
2759 mcast_table[crc >> 4] |= cpu_to_le16(1 << (crc & 0xf));
2760 }
2761 for (i = 0; i < 4; i++)
2762 lp->a.write_csr(ioaddr, PCNET32_MC_FILTER + i,
2763 le16_to_cpu(mcast_table[i]));
2764 return;
2765 }
2766
2767 /*
2768 * Set or clear the multicast filter for this adaptor.
2769 */
2770 static void pcnet32_set_multicast_list(struct net_device *dev)
2771 {
2772 unsigned long ioaddr = dev->base_addr, flags;
2773 struct pcnet32_private *lp = netdev_priv(dev);
2774 int csr15, suspended;
2775
2776 spin_lock_irqsave(&lp->lock, flags);
2777 suspended = pcnet32_suspend(dev, &flags, 0);
2778 csr15 = lp->a.read_csr(ioaddr, CSR15);
2779 if (dev->flags & IFF_PROMISC) {
2780 /* Log any net taps. */
2781 if (netif_msg_hw(lp))
2782 printk(KERN_INFO "%s: Promiscuous mode enabled.\n",
2783 dev->name);
2784 lp->init_block->mode =
2785 cpu_to_le16(0x8000 | (lp->options & PCNET32_PORT_PORTSEL) <<
2786 7);
2787 lp->a.write_csr(ioaddr, CSR15, csr15 | 0x8000);
2788 } else {
2789 lp->init_block->mode =
2790 cpu_to_le16((lp->options & PCNET32_PORT_PORTSEL) << 7);
2791 lp->a.write_csr(ioaddr, CSR15, csr15 & 0x7fff);
2792 pcnet32_load_multicast(dev);
2793 }
2794
2795 if (suspended) {
2796 int csr5;
2797 /* clear SUSPEND (SPND) - CSR5 bit 0 */
2798 csr5 = lp->a.read_csr(ioaddr, CSR5);
2799 lp->a.write_csr(ioaddr, CSR5, csr5 & (~CSR5_SUSPEND));
2800 } else {
2801 lp->a.write_csr(ioaddr, CSR0, CSR0_STOP);
2802 pcnet32_restart(dev, CSR0_NORMAL);
2803 netif_wake_queue(dev);
2804 }
2805
2806 spin_unlock_irqrestore(&lp->lock, flags);
2807 }
2808
2809 /* This routine assumes that the lp->lock is held */
2810 static int mdio_read(struct net_device *dev, int phy_id, int reg_num)
2811 {
2812 struct pcnet32_private *lp = netdev_priv(dev);
2813 unsigned long ioaddr = dev->base_addr;
2814 u16 val_out;
2815
2816 if (!lp->mii)
2817 return 0;
2818
2819 lp->a.write_bcr(ioaddr, 33, ((phy_id & 0x1f) << 5) | (reg_num & 0x1f));
2820 val_out = lp->a.read_bcr(ioaddr, 34);
2821
2822 return val_out;
2823 }
2824
2825 /* This routine assumes that the lp->lock is held */
2826 static void mdio_write(struct net_device *dev, int phy_id, int reg_num, int val)
2827 {
2828 struct pcnet32_private *lp = netdev_priv(dev);
2829 unsigned long ioaddr = dev->base_addr;
2830
2831 if (!lp->mii)
2832 return;
2833
2834 lp->a.write_bcr(ioaddr, 33, ((phy_id & 0x1f) << 5) | (reg_num & 0x1f));
2835 lp->a.write_bcr(ioaddr, 34, val);
2836 }
2837
2838 static int pcnet32_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2839 {
2840 struct pcnet32_private *lp = netdev_priv(dev);
2841 int rc;
2842 unsigned long flags;
2843
2844 /* SIOC[GS]MIIxxx ioctls */
2845 if (lp->mii) {
2846 spin_lock_irqsave(&lp->lock, flags);
2847 rc = generic_mii_ioctl(&lp->mii_if, if_mii(rq), cmd, NULL);
2848 spin_unlock_irqrestore(&lp->lock, flags);
2849 } else {
2850 rc = -EOPNOTSUPP;
2851 }
2852
2853 return rc;
2854 }
2855
2856 static int pcnet32_check_otherphy(struct net_device *dev)
2857 {
2858 struct pcnet32_private *lp = netdev_priv(dev);
2859 struct mii_if_info mii = lp->mii_if;
2860 u16 bmcr;
2861 int i;
2862
2863 for (i = 0; i < PCNET32_MAX_PHYS; i++) {
2864 if (i == lp->mii_if.phy_id)
2865 continue; /* skip active phy */
2866 if (lp->phymask & (1 << i)) {
2867 mii.phy_id = i;
2868 if (mii_link_ok(&mii)) {
2869 /* found PHY with active link */
2870 if (netif_msg_link(lp))
2871 printk(KERN_INFO
2872 "%s: Using PHY number %d.\n",
2873 dev->name, i);
2874
2875 /* isolate inactive phy */
2876 bmcr =
2877 mdio_read(dev, lp->mii_if.phy_id, MII_BMCR);
2878 mdio_write(dev, lp->mii_if.phy_id, MII_BMCR,
2879 bmcr | BMCR_ISOLATE);
2880
2881 /* de-isolate new phy */
2882 bmcr = mdio_read(dev, i, MII_BMCR);
2883 mdio_write(dev, i, MII_BMCR,
2884 bmcr & ~BMCR_ISOLATE);
2885
2886 /* set new phy address */
2887 lp->mii_if.phy_id = i;
2888 return 1;
2889 }
2890 }
2891 }
2892 return 0;
2893 }
2894
2895 /*
2896 * Show the status of the media. Similar to mii_check_media however it
2897 * correctly shows the link speed for all (tested) pcnet32 variants.
2898 * Devices with no mii just report link state without speed.
2899 *
2900 * Caller is assumed to hold and release the lp->lock.
2901 */
2902
2903 static void pcnet32_check_media(struct net_device *dev, int verbose)
2904 {
2905 struct pcnet32_private *lp = netdev_priv(dev);
2906 int curr_link;
2907 int prev_link = netif_carrier_ok(dev) ? 1 : 0;
2908 u32 bcr9;
2909
2910 if (lp->mii) {
2911 curr_link = mii_link_ok(&lp->mii_if);
2912 } else {
2913 ulong ioaddr = dev->base_addr; /* card base I/O address */
2914 curr_link = (lp->a.read_bcr(ioaddr, 4) != 0xc0);
2915 }
2916 if (!curr_link) {
2917 if (prev_link || verbose) {
2918 netif_carrier_off(dev);
2919 if (netif_msg_link(lp))
2920 printk(KERN_INFO "%s: link down\n", dev->name);
2921 }
2922 if (lp->phycount > 1) {
2923 curr_link = pcnet32_check_otherphy(dev);
2924 prev_link = 0;
2925 }
2926 } else if (verbose || !prev_link) {
2927 netif_carrier_on(dev);
2928 if (lp->mii) {
2929 if (netif_msg_link(lp)) {
2930 struct ethtool_cmd ecmd;
2931 mii_ethtool_gset(&lp->mii_if, &ecmd);
2932 printk(KERN_INFO
2933 "%s: link up, %sMbps, %s-duplex\n",
2934 dev->name,
2935 (ecmd.speed == SPEED_100) ? "100" : "10",
2936 (ecmd.duplex ==
2937 DUPLEX_FULL) ? "full" : "half");
2938 }
2939 bcr9 = lp->a.read_bcr(dev->base_addr, 9);
2940 if ((bcr9 & (1 << 0)) != lp->mii_if.full_duplex) {
2941 if (lp->mii_if.full_duplex)
2942 bcr9 |= (1 << 0);
2943 else
2944 bcr9 &= ~(1 << 0);
2945 lp->a.write_bcr(dev->base_addr, 9, bcr9);
2946 }
2947 } else {
2948 if (netif_msg_link(lp))
2949 printk(KERN_INFO "%s: link up\n", dev->name);
2950 }
2951 }
2952 }
2953
2954 /*
2955 * Check for loss of link and link establishment.
2956 * Can not use mii_check_media because it does nothing if mode is forced.
2957 */
2958
2959 static void pcnet32_watchdog(struct net_device *dev)
2960 {
2961 struct pcnet32_private *lp = netdev_priv(dev);
2962 unsigned long flags;
2963
2964 /* Print the link status if it has changed */
2965 spin_lock_irqsave(&lp->lock, flags);
2966 pcnet32_check_media(dev, 0);
2967 spin_unlock_irqrestore(&lp->lock, flags);
2968
2969 mod_timer(&(lp->watchdog_timer), PCNET32_WATCHDOG_TIMEOUT);
2970 }
2971
2972 static int pcnet32_pm_suspend(struct pci_dev *pdev, pm_message_t state)
2973 {
2974 struct net_device *dev = pci_get_drvdata(pdev);
2975
2976 if (netif_running(dev)) {
2977 netif_device_detach(dev);
2978 pcnet32_close(dev);
2979 }
2980 pci_save_state(pdev);
2981 pci_set_power_state(pdev, pci_choose_state(pdev, state));
2982 return 0;
2983 }
2984
2985 static int pcnet32_pm_resume(struct pci_dev *pdev)
2986 {
2987 struct net_device *dev = pci_get_drvdata(pdev);
2988
2989 pci_set_power_state(pdev, PCI_D0);
2990 pci_restore_state(pdev);
2991
2992 if (netif_running(dev)) {
2993 pcnet32_open(dev);
2994 netif_device_attach(dev);
2995 }
2996 return 0;
2997 }
2998
2999 static void __devexit pcnet32_remove_one(struct pci_dev *pdev)
3000 {
3001 struct net_device *dev = pci_get_drvdata(pdev);
3002
3003 if (dev) {
3004 struct pcnet32_private *lp = netdev_priv(dev);
3005
3006 unregister_netdev(dev);
3007 pcnet32_free_ring(dev);
3008 release_region(dev->base_addr, PCNET32_TOTAL_SIZE);
3009 pci_free_consistent(lp->pci_dev, sizeof(*lp->init_block),
3010 lp->init_block, lp->init_dma_addr);
3011 free_netdev(dev);
3012 pci_disable_device(pdev);
3013 pci_set_drvdata(pdev, NULL);
3014 }
3015 }
3016
3017 static struct pci_driver pcnet32_driver = {
3018 .name = DRV_NAME,
3019 .probe = pcnet32_probe_pci,
3020 .remove = __devexit_p(pcnet32_remove_one),
3021 .id_table = pcnet32_pci_tbl,
3022 .suspend = pcnet32_pm_suspend,
3023 .resume = pcnet32_pm_resume,
3024 };
3025
3026 /* An additional parameter that may be passed in... */
3027 static int debug = -1;
3028 static int tx_start_pt = -1;
3029 static int pcnet32_have_pci;
3030
3031 module_param(debug, int, 0);
3032 MODULE_PARM_DESC(debug, DRV_NAME " debug level");
3033 module_param(max_interrupt_work, int, 0);
3034 MODULE_PARM_DESC(max_interrupt_work,
3035 DRV_NAME " maximum events handled per interrupt");
3036 module_param(rx_copybreak, int, 0);
3037 MODULE_PARM_DESC(rx_copybreak,
3038 DRV_NAME " copy breakpoint for copy-only-tiny-frames");
3039 module_param(tx_start_pt, int, 0);
3040 MODULE_PARM_DESC(tx_start_pt, DRV_NAME " transmit start point (0-3)");
3041 module_param(pcnet32vlb, int, 0);
3042 MODULE_PARM_DESC(pcnet32vlb, DRV_NAME " Vesa local bus (VLB) support (0/1)");
3043 module_param_array(options, int, NULL, 0);
3044 MODULE_PARM_DESC(options, DRV_NAME " initial option setting(s) (0-15)");
3045 module_param_array(full_duplex, int, NULL, 0);
3046 MODULE_PARM_DESC(full_duplex, DRV_NAME " full duplex setting(s) (1)");
3047 /* Module Parameter for HomePNA cards added by Patrick Simmons, 2004 */
3048 module_param_array(homepna, int, NULL, 0);
3049 MODULE_PARM_DESC(homepna,
3050 DRV_NAME
3051 " mode for 79C978 cards (1 for HomePNA, 0 for Ethernet, default Ethernet");
3052
3053 MODULE_AUTHOR("Thomas Bogendoerfer");
3054 MODULE_DESCRIPTION("Driver for PCnet32 and PCnetPCI based ethercards");
3055 MODULE_LICENSE("GPL");
3056
3057 #define PCNET32_MSG_DEFAULT (NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK)
3058
3059 static int __init pcnet32_init_module(void)
3060 {
3061 printk(KERN_INFO "%s", version);
3062
3063 pcnet32_debug = netif_msg_init(debug, PCNET32_MSG_DEFAULT);
3064
3065 if ((tx_start_pt >= 0) && (tx_start_pt <= 3))
3066 tx_start = tx_start_pt;
3067
3068 /* find the PCI devices */
3069 if (!pci_register_driver(&pcnet32_driver))
3070 pcnet32_have_pci = 1;
3071
3072 /* should we find any remaining VLbus devices ? */
3073 if (pcnet32vlb)
3074 pcnet32_probe_vlbus(pcnet32_portlist);
3075
3076 if (cards_found && (pcnet32_debug & NETIF_MSG_PROBE))
3077 printk(KERN_INFO PFX "%d cards_found.\n", cards_found);
3078
3079 return (pcnet32_have_pci + cards_found) ? 0 : -ENODEV;
3080 }
3081
3082 static void __exit pcnet32_cleanup_module(void)
3083 {
3084 struct net_device *next_dev;
3085
3086 while (pcnet32_dev) {
3087 struct pcnet32_private *lp = netdev_priv(pcnet32_dev);
3088 next_dev = lp->next;
3089 unregister_netdev(pcnet32_dev);
3090 pcnet32_free_ring(pcnet32_dev);
3091 release_region(pcnet32_dev->base_addr, PCNET32_TOTAL_SIZE);
3092 pci_free_consistent(lp->pci_dev, sizeof(*lp->init_block),
3093 lp->init_block, lp->init_dma_addr);
3094 free_netdev(pcnet32_dev);
3095 pcnet32_dev = next_dev;
3096 }
3097
3098 if (pcnet32_have_pci)
3099 pci_unregister_driver(&pcnet32_driver);
3100 }
3101
3102 module_init(pcnet32_init_module);
3103 module_exit(pcnet32_cleanup_module);
3104
3105 /*
3106 * Local variables:
3107 * c-indent-level: 4
3108 * tab-width: 8
3109 * End:
3110 */
Support for the Chinese Samsung S3C2440 based development boards