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Merge with Linux 2.5.74.
[linux-2.6/linux-mips.git] / drivers / net / typhoon.c
blobc5aa5710afbe56bdb4f7a9cf4654c884addef7b3
1 /* typhoon.c: A Linux Ethernet device driver for 3Com 3CR990 family of NICs */
2 /*
3 Written 2002-2003 by David Dillow <dave@thedillows.org>
4 Based on code written 1998-2000 by Donald Becker <becker@scyld.com> and
5 Linux 2.2.x driver by David P. McLean <davidpmclean@yahoo.com>.
6
7 This software may be used and distributed according to the terms of
8 the GNU General Public License (GPL), incorporated herein by reference.
9 Drivers based on or derived from this code fall under the GPL and must
10 retain the authorship, copyright and license notice. This file is not
11 a complete program and may only be used when the entire operating
12 system is licensed under the GPL.
13
14 This software is available on a public web site. It may enable
15 cryptographic capabilities of the 3Com hardware, and may be
16 exported from the United States under License Exception "TSU"
17 pursuant to 15 C.F.R. Section 740.13(e).
18
19 This work was funded by the National Library of Medicine under
20 the Department of Energy project number 0274DD06D1 and NLM project
21 number Y1-LM-2015-01.
22
23 This driver is designed for the 3Com 3CR990 Family of cards with the
24 3XP Processor. It has been tested on x86 and sparc64.
25
26 KNOWN ISSUES:
27 *) The current firmware always strips the VLAN tag off, even if
28 we tell it not to. You should filter VLANs at the switch
29 as a workaround (good practice in any event) until we can
30 get this fixed.
31 *) Cannot DMA Rx packets to a 2 byte aligned address. Also firmware
32 issue. Hopefully 3Com will fix it.
33 *) Waiting for a command response takes 8ms due to non-preemptable
34 polling. Only significant for getting stats and creating
35 SAs, but an ugly wart never the less.
36 *) I've not tested multicast. I think it works, but reports welcome.
37 *) Doesn't do IPSEC offloading. Yet. Keep yer pants on, it's coming.
38 */
39
40 /* Set the copy breakpoint for the copy-only-tiny-frames scheme.
41 * Setting to > 1518 effectively disables this feature.
42 */
43 static int rx_copybreak = 200;
44
45 /* end user-configurable values */
46
47 /* Maximum number of multicast addresses to filter (vs. rx-all-multicast).
48 */
49 static const int multicast_filter_limit = 32;
50
51 /* Operational parameters that are set at compile time. */
52
53 /* Keep the ring sizes a power of two for compile efficiency.
54 * The compiler will convert <unsigned>'%'<2^N> into a bit mask.
55 * Making the Tx ring too large decreases the effectiveness of channel
56 * bonding and packet priority.
57 * There are no ill effects from too-large receive rings.
58 *
59 * We don't currently use the Hi Tx ring so, don't make it very big.
60 *
61 * Beware that if we start using the Hi Tx ring, we will need to change
62 * typhoon_num_free_tx() and typhoon_tx_complete() to account for that.
63 */
64 #define TXHI_ENTRIES 2
65 #define TXLO_ENTRIES 128
66 #define RX_ENTRIES 32
67 #define COMMAND_ENTRIES 16
68 #define RESPONSE_ENTRIES 32
69
70 #define COMMAND_RING_SIZE (COMMAND_ENTRIES * sizeof(struct cmd_desc))
71 #define RESPONSE_RING_SIZE (RESPONSE_ENTRIES * sizeof(struct resp_desc))
72
73 /* The 3XP will preload and remove 64 entries from the free buffer
74 * list, and we need one entry to keep the ring from wrapping, so
75 * to keep this a power of two, we use 128 entries.
76 */
77 #define RXFREE_ENTRIES 128
78 #define RXENT_ENTRIES (RXFREE_ENTRIES - 1)
79
80 /* Operational parameters that usually are not changed. */
81
82 /* Time in jiffies before concluding the transmitter is hung. */
83 #define TX_TIMEOUT (2*HZ)
84
85 #define PKT_BUF_SZ 1536
86
87 #define DRV_MODULE_NAME "typhoon"
88 #define DRV_MODULE_VERSION "1.5.1"
89 #define DRV_MODULE_RELDATE "03/06/26"
90 #define PFX DRV_MODULE_NAME ": "
91 #define ERR_PFX KERN_ERR PFX
92
93 #if !defined(__OPTIMIZE__) || !defined(__KERNEL__)
94 #warning You must compile this file with the correct options!
95 #warning See the last lines of the source file.
96 #error You must compile this driver with "-O".
97 #endif
98
99 #include <linux/module.h>
100 #include <linux/kernel.h>
101 #include <linux/string.h>
102 #include <linux/timer.h>
103 #include <linux/errno.h>
104 #include <linux/ioport.h>
105 #include <linux/slab.h>
106 #include <linux/interrupt.h>
107 #include <linux/pci.h>
108 #include <linux/netdevice.h>
109 #include <linux/etherdevice.h>
110 #include <linux/skbuff.h>
111 #include <linux/init.h>
112 #include <linux/delay.h>
113 #include <linux/ethtool.h>
114 #include <linux/if_vlan.h>
115 #include <linux/crc32.h>
116 #include <asm/processor.h>
117 #include <asm/bitops.h>
118 #include <asm/io.h>
119 #include <asm/uaccess.h>
120 #include <linux/in6.h>
121 #include <asm/checksum.h>
122 #include <linux/version.h>
123
124 #include "typhoon.h"
125 #include "typhoon-firmware.h"
126
127 static char version[] __devinitdata =
128 "typhoon.c: version " DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")\n";
129
130 MODULE_AUTHOR("David Dillow <dillowd@y12.doe.gov>");
131 MODULE_LICENSE("GPL");
132 MODULE_DESCRIPTION("3Com Typhoon Family (3C990, 3CR990, and variants)");
133 MODULE_PARM(rx_copybreak, "i");
134
135 #if defined(NETIF_F_TSO) && MAX_SKB_FRAGS > 32
136 #warning Typhoon only supports 32 entries in its SG list for TSO, disabling TSO
137 #undef NETIF_F_TSO
138 #endif
139
140 #if TXLO_ENTRIES <= (2 * MAX_SKB_FRAGS)
141 #error TX ring too small!
142 #endif
143
144 struct typhoon_card_info {
145 char *name;
146 int capabilities;
147 };
148
149 #define TYPHOON_CRYPTO_NONE 0
150 #define TYPHOON_CRYPTO_DES 1
151 #define TYPHOON_CRYPTO_3DES 2
152 #define TYPHOON_CRYPTO_VARIABLE 4
153 #define TYPHOON_FIBER 8
154
155 enum typhoon_cards {
156 TYPHOON_TX = 0, TYPHOON_TX95, TYPHOON_TX97, TYPHOON_SVR,
157 TYPHOON_SVR95, TYPHOON_SVR97, TYPHOON_TXM, TYPHOON_BSVR,
158 TYPHOON_FX95, TYPHOON_FX97, TYPHOON_FX95SVR, TYPHOON_FX97SVR,
159 };
160
161 /* directly indexed by enum typhoon_cards, above */
162 static struct typhoon_card_info typhoon_card_info[] __devinitdata = {
163 { "3Com Typhoon (3C990-TX)",
164 TYPHOON_CRYPTO_NONE},
165 { "3Com Typhoon (3CR990-TX-95)",
166 TYPHOON_CRYPTO_DES},
167 { "3Com Typhoon (3CR990-TX-97)",
168 TYPHOON_CRYPTO_DES | TYPHOON_CRYPTO_3DES},
169 { "3Com Typhoon (3C990SVR)",
170 TYPHOON_CRYPTO_NONE},
171 { "3Com Typhoon (3CR990SVR95)",
172 TYPHOON_CRYPTO_DES},
173 { "3Com Typhoon (3CR990SVR97)",
174 TYPHOON_CRYPTO_DES | TYPHOON_CRYPTO_3DES},
175 { "3Com Typhoon2 (3C990B-TX-M)",
176 TYPHOON_CRYPTO_VARIABLE},
177 { "3Com Typhoon2 (3C990BSVR)",
178 TYPHOON_CRYPTO_VARIABLE},
179 { "3Com Typhoon (3CR990-FX-95)",
180 TYPHOON_CRYPTO_DES | TYPHOON_FIBER},
181 { "3Com Typhoon (3CR990-FX-97)",
182 TYPHOON_CRYPTO_DES | TYPHOON_CRYPTO_3DES | TYPHOON_FIBER},
183 { "3Com Typhoon (3CR990-FX-95 Server)",
184 TYPHOON_CRYPTO_DES | TYPHOON_FIBER},
185 { "3Com Typhoon (3CR990-FX-97 Server)",
186 TYPHOON_CRYPTO_DES | TYPHOON_CRYPTO_3DES | TYPHOON_FIBER},
187 };
188
189 /* Notes on the new subsystem numbering scheme:
190 * bits 0-1 indicate crypto capabilites: (0) variable, (1) DES, or (2) 3DES
191 * bit 4 indicates if this card has secured firmware (we don't support it)
192 * bit 8 indicates if this is a (0) copper or (1) fiber card
193 * bits 12-16 indicate card type: (0) client and (1) server
194 */
195 static struct pci_device_id typhoon_pci_tbl[] __devinitdata = {
196 { PCI_VENDOR_ID_3COM, PCI_DEVICE_ID_3COM_3CR990,
197 PCI_ANY_ID, PCI_ANY_ID, 0, 0,TYPHOON_TX },
198 { PCI_VENDOR_ID_3COM, PCI_DEVICE_ID_3COM_3CR990_TX_95,
199 PCI_ANY_ID, PCI_ANY_ID, 0, 0, TYPHOON_TX95 },
200 { PCI_VENDOR_ID_3COM, PCI_DEVICE_ID_3COM_3CR990_TX_97,
201 PCI_ANY_ID, PCI_ANY_ID, 0, 0, TYPHOON_TX97 },
202 { PCI_VENDOR_ID_3COM, PCI_DEVICE_ID_3COM_3CR990B,
203 PCI_ANY_ID, 0x1000, 0, 0, TYPHOON_TXM },
204 { PCI_VENDOR_ID_3COM, PCI_DEVICE_ID_3COM_3CR990B,
205 PCI_ANY_ID, 0x2000, 0, 0, TYPHOON_BSVR },
206 { PCI_VENDOR_ID_3COM, PCI_DEVICE_ID_3COM_3CR990_FX,
207 PCI_ANY_ID, 0x1101, 0, 0, TYPHOON_FX95 },
208 { PCI_VENDOR_ID_3COM, PCI_DEVICE_ID_3COM_3CR990_FX,
209 PCI_ANY_ID, 0x1102, 0, 0, TYPHOON_FX97 },
210 { PCI_VENDOR_ID_3COM, PCI_DEVICE_ID_3COM_3CR990_FX,
211 PCI_ANY_ID, 0x2101, 0, 0, TYPHOON_FX95SVR },
212 { PCI_VENDOR_ID_3COM, PCI_DEVICE_ID_3COM_3CR990_FX,
213 PCI_ANY_ID, 0x2102, 0, 0, TYPHOON_FX97SVR },
214 { PCI_VENDOR_ID_3COM, PCI_DEVICE_ID_3COM_3CR990SVR95,
215 PCI_ANY_ID, PCI_ANY_ID, 0, 0, TYPHOON_SVR95 },
216 { PCI_VENDOR_ID_3COM, PCI_DEVICE_ID_3COM_3CR990SVR97,
217 PCI_ANY_ID, PCI_ANY_ID, 0, 0, TYPHOON_SVR97 },
218 { PCI_VENDOR_ID_3COM, PCI_DEVICE_ID_3COM_3CR990SVR,
219 PCI_ANY_ID, PCI_ANY_ID, 0, 0, TYPHOON_SVR },
220 { 0, }
221 };
222 MODULE_DEVICE_TABLE(pci, typhoon_pci_tbl);
223
224 /* Define the shared memory area
225 * Align everything the 3XP will normally be using.
226 * We'll need to move/align txHi if we start using that ring.
227 */
228 #define __3xp_aligned ____cacheline_aligned
229 struct typhoon_shared {
230 struct typhoon_interface iface;
231 struct typhoon_indexes indexes __3xp_aligned;
232 struct tx_desc txLo[TXLO_ENTRIES] __3xp_aligned;
233 struct rx_desc rxLo[RX_ENTRIES] __3xp_aligned;
234 struct rx_desc rxHi[RX_ENTRIES] __3xp_aligned;
235 struct cmd_desc cmd[COMMAND_ENTRIES] __3xp_aligned;
236 struct resp_desc resp[RESPONSE_ENTRIES] __3xp_aligned;
237 struct rx_free rxBuff[RXFREE_ENTRIES] __3xp_aligned;
238 u32 zeroWord;
239 struct tx_desc txHi[TXHI_ENTRIES];
240 } __attribute__ ((packed));
241
242 struct rxbuff_ent {
243 struct sk_buff *skb;
244 dma_addr_t dma_addr;
245 };
246
247 struct typhoon {
248 /* Tx cache line section */
249 struct transmit_ring txLoRing ____cacheline_aligned;
250 struct pci_dev * tx_pdev;
251 unsigned long tx_ioaddr;
252 u32 txlo_dma_addr;
253
254 /* Irq/Rx cache line section */
255 unsigned long ioaddr ____cacheline_aligned;
256 struct typhoon_indexes *indexes;
257 u8 awaiting_resp;
258 u8 duplex;
259 u8 speed;
260 u8 card_state;
261 struct basic_ring rxLoRing;
262 struct pci_dev * pdev;
263 struct net_device * dev;
264 spinlock_t state_lock;
265 struct vlan_group * vlgrp;
266 struct basic_ring rxHiRing;
267 struct basic_ring rxBuffRing;
268 struct rxbuff_ent rxbuffers[RXENT_ENTRIES];
269
270 /* general section */
271 spinlock_t command_lock ____cacheline_aligned;
272 struct basic_ring cmdRing;
273 struct basic_ring respRing;
274 struct net_device_stats stats;
275 struct net_device_stats stats_saved;
276 const char * name;
277 struct typhoon_shared * shared;
278 dma_addr_t shared_dma;
279 u16 xcvr_select;
280 u16 wol_events;
281 u32 offload;
282 u32 pci_state[16];
283
284 /* unused stuff (future use) */
285 int capabilities;
286 struct transmit_ring txHiRing;
287 };
288
289 enum completion_wait_values {
290 NoWait = 0, WaitNoSleep, WaitSleep,
291 };
292
293 /* These are the values for the typhoon.card_state variable.
294 * These determine where the statistics will come from in get_stats().
295 * The sleep image does not support the statistics we need.
296 */
297 enum state_values {
298 Sleeping = 0, Running,
299 };
300
301 /* PCI writes are not guaranteed to be posted in order, but outstanding writes
302 * cannot pass a read, so this forces current writes to post.
303 */
304 #define typhoon_post_pci_writes(x) \
305 do { readl(x + TYPHOON_REG_HEARTBEAT); } while(0)
306
307 /* We'll wait up to six seconds for a reset, and half a second normally.
308 */
309 #define TYPHOON_UDELAY 50
310 #define TYPHOON_RESET_TIMEOUT (6 * HZ)
311 #define TYPHOON_WAIT_TIMEOUT ((1000000 / 2) / TYPHOON_UDELAY)
312
313 #if LINUX_VERSION_CODE < KERNEL_VERSION(2, 5, 28)
314 #define typhoon_synchronize_irq(x) synchronize_irq()
315 #else
316 #define typhoon_synchronize_irq(x) synchronize_irq(x)
317 #endif
318
319 #if defined(NETIF_F_TSO)
320 #define skb_tso_size(x) (skb_shinfo(x)->tso_size)
321 #define TSO_NUM_DESCRIPTORS 2
322 #define TSO_OFFLOAD_ON TYPHOON_OFFLOAD_TCP_SEGMENT
323 #else
324 #define NETIF_F_TSO 0
325 #define skb_tso_size(x) 0
326 #define TSO_NUM_DESCRIPTORS 0
327 #define TSO_OFFLOAD_ON 0
328 #endif
329
330 static inline void
331 typhoon_inc_index(u32 *index, const int count, const int num_entries)
332 {
333 /* Increment a ring index -- we can use this for all rings execept
334 * the Rx rings, as they use different size descriptors
335 * otherwise, everything is the same size as a cmd_desc
336 */
337 *index += count * sizeof(struct cmd_desc);
338 *index %= num_entries * sizeof(struct cmd_desc);
339 }
340
341 static inline void
342 typhoon_inc_cmd_index(u32 *index, const int count)
343 {
344 typhoon_inc_index(index, count, COMMAND_ENTRIES);
345 }
346
347 static inline void
348 typhoon_inc_resp_index(u32 *index, const int count)
349 {
350 typhoon_inc_index(index, count, RESPONSE_ENTRIES);
351 }
352
353 static inline void
354 typhoon_inc_rxfree_index(u32 *index, const int count)
355 {
356 typhoon_inc_index(index, count, RXFREE_ENTRIES);
357 }
358
359 static inline void
360 typhoon_inc_tx_index(u32 *index, const int count)
361 {
362 /* if we start using the Hi Tx ring, this needs updateing */
363 typhoon_inc_index(index, count, TXLO_ENTRIES);
364 }
365
366 static inline void
367 typhoon_inc_rx_index(u32 *index, const int count)
368 {
369 /* sizeof(struct rx_desc) != sizeof(struct cmd_desc) */
370 *index += count * sizeof(struct rx_desc);
371 *index %= RX_ENTRIES * sizeof(struct rx_desc);
372 }
373
374 static int
375 typhoon_reset(unsigned long ioaddr, int wait_type)
376 {
377 int i, err = 0;
378 int timeout = TYPHOON_RESET_TIMEOUT;
379
380 if(wait_type == WaitNoSleep)
381 timeout = (timeout * 1000000) / (HZ * TYPHOON_UDELAY);
382
383 writel(TYPHOON_INTR_ALL, ioaddr + TYPHOON_REG_INTR_MASK);
384 writel(TYPHOON_INTR_ALL, ioaddr + TYPHOON_REG_INTR_STATUS);
385
386 writel(TYPHOON_RESET_ALL, ioaddr + TYPHOON_REG_SOFT_RESET);
387 typhoon_post_pci_writes(ioaddr);
388 udelay(1);
389 writel(TYPHOON_RESET_NONE, ioaddr + TYPHOON_REG_SOFT_RESET);
390
391 if(wait_type != NoWait) {
392 for(i = 0; i < timeout; i++) {
393 if(readl(ioaddr + TYPHOON_REG_STATUS) ==
394 TYPHOON_STATUS_WAITING_FOR_HOST)
395 goto out;
396
397 if(wait_type == WaitSleep) {
398 set_current_state(TASK_UNINTERRUPTIBLE);
399 schedule_timeout(1);
400 } else
401 udelay(TYPHOON_UDELAY);
402 }
403
404 err = -ETIMEDOUT;
405 }
406
407 out:
408 writel(TYPHOON_INTR_ALL, ioaddr + TYPHOON_REG_INTR_MASK);
409 writel(TYPHOON_INTR_ALL, ioaddr + TYPHOON_REG_INTR_STATUS);
410 udelay(100);
411 return err;
412
413 /* The 3XP seems to need a little extra time to complete the load
414 * of the sleep image before we can reliably boot it. Failure to
415 * do this occasionally results in a hung adapter after boot in
416 * typhoon_init_one() while trying to read the MAC address or
417 * putting the card to sleep. 3Com's driver waits 5ms, but
418 * that seems to be overkill -- with a 50usec delay, it survives
419 * 35000 typhoon_init_one() calls, where it only make it 25-100
420 * without it.
421 *
422 * As it turns out, still occasionally getting a hung adapter,
423 * so I'm bumping it to 100us.
424 */
425 }
426
427 static int
428 typhoon_wait_status(unsigned long ioaddr, u32 wait_value)
429 {
430 int i, err = 0;
431
432 for(i = 0; i < TYPHOON_WAIT_TIMEOUT; i++) {
433 if(readl(ioaddr + TYPHOON_REG_STATUS) == wait_value)
434 goto out;
435 udelay(TYPHOON_UDELAY);
436 }
437
438 err = -ETIMEDOUT;
439
440 out:
441 return err;
442 }
443
444 static inline void
445 typhoon_media_status(struct net_device *dev, struct resp_desc *resp)
446 {
447 if(resp->parm1 & TYPHOON_MEDIA_STAT_NO_LINK)
448 netif_carrier_off(dev);
449 else
450 netif_carrier_on(dev);
451 }
452
453 static inline void
454 typhoon_hello(struct typhoon *tp)
455 {
456 struct basic_ring *ring = &tp->cmdRing;
457 struct cmd_desc *cmd;
458
459 /* We only get a hello request if we've not sent anything to the
460 * card in a long while. If the lock is held, then we're in the
461 * process of issuing a command, so we don't need to respond.
462 */
463 if(spin_trylock(&tp->command_lock)) {
464 cmd = (struct cmd_desc *)(ring->ringBase + ring->lastWrite);
465 typhoon_inc_cmd_index(&ring->lastWrite, 1);
466
467 INIT_COMMAND_NO_RESPONSE(cmd, TYPHOON_CMD_HELLO_RESP);
468 smp_wmb();
469 writel(ring->lastWrite, tp->ioaddr + TYPHOON_REG_CMD_READY);
470 spin_unlock(&tp->command_lock);
471 }
472 }
473
474 static int
475 typhoon_process_response(struct typhoon *tp, int resp_size,
476 struct resp_desc *resp_save)
477 {
478 struct typhoon_indexes *indexes = tp->indexes;
479 struct resp_desc *resp;
480 u8 *base = tp->respRing.ringBase;
481 int count, len, wrap_len;
482 u32 cleared;
483 u32 ready;
484
485 cleared = le32_to_cpu(indexes->respCleared);
486 ready = le32_to_cpu(indexes->respReady);
487 while(cleared != ready) {
488 resp = (struct resp_desc *)(base + cleared);
489 count = resp->numDesc + 1;
490 if(resp_save && resp->seqNo) {
491 if(count > resp_size) {
492 resp_save->flags = TYPHOON_RESP_ERROR;
493 goto cleanup;
494 }
495
496 wrap_len = 0;
497 len = count * sizeof(*resp);
498 if(unlikely(cleared + len > RESPONSE_RING_SIZE)) {
499 wrap_len = cleared + len - RESPONSE_RING_SIZE;
500 len = RESPONSE_RING_SIZE - cleared;
501 }
502
503 memcpy(resp_save, resp, len);
504 if(unlikely(wrap_len)) {
505 resp_save += len / sizeof(*resp);
506 memcpy(resp_save, base, wrap_len);
507 }
508
509 resp_save = NULL;
510 } else if(resp->cmd == TYPHOON_CMD_READ_MEDIA_STATUS) {
511 typhoon_media_status(tp->dev, resp);
512 } else if(resp->cmd == TYPHOON_CMD_HELLO_RESP) {
513 typhoon_hello(tp);
514 } else {
515 printk(KERN_ERR "%s: dumping unexpected response "
516 "0x%04x:%d:0x%02x:0x%04x:%08x:%08x\n",
517 tp->name, le16_to_cpu(resp->cmd),
518 resp->numDesc, resp->flags,
519 le16_to_cpu(resp->parm1),
520 le32_to_cpu(resp->parm2),
521 le32_to_cpu(resp->parm3));
522 }
523
524 cleanup:
525 typhoon_inc_resp_index(&cleared, count);
526 }
527
528 indexes->respCleared = cpu_to_le32(cleared);
529 wmb();
530 return (resp_save == NULL);
531 }
532
533 static inline int
534 typhoon_num_free(int lastWrite, int lastRead, int ringSize)
535 {
536 /* this works for all descriptors but rx_desc, as they are a
537 * different size than the cmd_desc -- everyone else is the same
538 */
539 lastWrite /= sizeof(struct cmd_desc);
540 lastRead /= sizeof(struct cmd_desc);
541 return (ringSize + lastRead - lastWrite - 1) % ringSize;
542 }
543
544 static inline int
545 typhoon_num_free_cmd(struct typhoon *tp)
546 {
547 int lastWrite = tp->cmdRing.lastWrite;
548 int cmdCleared = le32_to_cpu(tp->indexes->cmdCleared);
549
550 return typhoon_num_free(lastWrite, cmdCleared, COMMAND_ENTRIES);
551 }
552
553 static inline int
554 typhoon_num_free_resp(struct typhoon *tp)
555 {
556 int respReady = le32_to_cpu(tp->indexes->respReady);
557 int respCleared = le32_to_cpu(tp->indexes->respCleared);
558
559 return typhoon_num_free(respReady, respCleared, RESPONSE_ENTRIES);
560 }
561
562 static inline int
563 typhoon_num_free_tx(struct transmit_ring *ring)
564 {
565 /* if we start using the Hi Tx ring, this needs updating */
566 return typhoon_num_free(ring->lastWrite, ring->lastRead, TXLO_ENTRIES);
567 }
568
569 static int
570 typhoon_issue_command(struct typhoon *tp, int num_cmd, struct cmd_desc *cmd,
571 int num_resp, struct resp_desc *resp)
572 {
573 struct typhoon_indexes *indexes = tp->indexes;
574 struct basic_ring *ring = &tp->cmdRing;
575 struct resp_desc local_resp;
576 int i, err = 0;
577 int got_resp;
578 int freeCmd, freeResp;
579 int len, wrap_len;
580
581 spin_lock(&tp->command_lock);
582
583 freeCmd = typhoon_num_free_cmd(tp);
584 freeResp = typhoon_num_free_resp(tp);
585
586 if(freeCmd < num_cmd || freeResp < num_resp) {
587 printk("%s: no descs for cmd, had (needed) %d (%d) cmd, "
588 "%d (%d) resp\n", tp->name, freeCmd, num_cmd,
589 freeResp, num_resp);
590 err = -ENOMEM;
591 goto out;
592 }
593
594 if(cmd->flags & TYPHOON_CMD_RESPOND) {
595 /* If we're expecting a response, but the caller hasn't given
596 * us a place to put it, we'll provide one.
597 */
598 tp->awaiting_resp = 1;
599 if(resp == NULL) {
600 resp = &local_resp;
601 num_resp = 1;
602 }
603 }
604
605 wrap_len = 0;
606 len = num_cmd * sizeof(*cmd);
607 if(unlikely(ring->lastWrite + len > COMMAND_RING_SIZE)) {
608 wrap_len = ring->lastWrite + len - COMMAND_RING_SIZE;
609 len = COMMAND_RING_SIZE - ring->lastWrite;
610 }
611
612 memcpy(ring->ringBase + ring->lastWrite, cmd, len);
613 if(unlikely(wrap_len)) {
614 struct cmd_desc *wrap_ptr = cmd;
615 wrap_ptr += len / sizeof(*cmd);
616 memcpy(ring->ringBase, wrap_ptr, wrap_len);
617 }
618
619 typhoon_inc_cmd_index(&ring->lastWrite, num_cmd);
620
621 /* "I feel a presence... another warrior is on the the mesa."
622 */
623 wmb();
624 writel(ring->lastWrite, tp->ioaddr + TYPHOON_REG_CMD_READY);
625 typhoon_post_pci_writes(tp->ioaddr);
626
627 if((cmd->flags & TYPHOON_CMD_RESPOND) == 0)
628 goto out;
629
630 /* Ugh. We'll be here about 8ms, spinning our thumbs, unable to
631 * preempt or do anything other than take interrupts. So, don't
632 * wait for a response unless you have to.
633 *
634 * I've thought about trying to sleep here, but we're called
635 * from many contexts that don't allow that. Also, given the way
636 * 3Com has implemented irq coalescing, we would likely timeout --
637 * this has been observed in real life!
638 *
639 * The big killer is we have to wait to get stats from the card,
640 * though we could go to a periodic refresh of those if we don't
641 * mind them getting somewhat stale. The rest of the waiting
642 * commands occur during open/close/suspend/resume, so they aren't
643 * time critical. Creating SAs in the future will also have to
644 * wait here.
645 */
646 got_resp = 0;
647 for(i = 0; i < TYPHOON_WAIT_TIMEOUT && !got_resp; i++) {
648 if(indexes->respCleared != indexes->respReady)
649 got_resp = typhoon_process_response(tp, num_resp,
650 resp);
651 udelay(TYPHOON_UDELAY);
652 }
653
654 if(!got_resp) {
655 err = -ETIMEDOUT;
656 goto out;
657 }
658
659 /* Collect the error response even if we don't care about the
660 * rest of the response
661 */
662 if(resp->flags & TYPHOON_RESP_ERROR)
663 err = -EIO;
664
665 out:
666 if(tp->awaiting_resp) {
667 tp->awaiting_resp = 0;
668 smp_wmb();
669
670 /* Ugh. If a response was added to the ring between
671 * the call to typhoon_process_response() and the clearing
672 * of tp->awaiting_resp, we could have missed the interrupt
673 * and it could hang in the ring an indeterminate amount of
674 * time. So, check for it, and interrupt ourselves if this
675 * is the case.
676 */
677 if(indexes->respCleared != indexes->respReady)
678 writel(1, tp->ioaddr + TYPHOON_REG_SELF_INTERRUPT);
679 }
680
681 spin_unlock(&tp->command_lock);
682 return err;
683 }
684
685 static void
686 typhoon_vlan_rx_register(struct net_device *dev, struct vlan_group *grp)
687 {
688 struct typhoon *tp = (struct typhoon *) dev->priv;
689 struct cmd_desc xp_cmd;
690 int err;
691
692 spin_lock_bh(&tp->state_lock);
693 if(!tp->vlgrp != !grp) {
694 /* We've either been turned on for the first time, or we've
695 * been turned off. Update the 3XP.
696 */
697 if(grp)
698 tp->offload |= TYPHOON_OFFLOAD_VLAN;
699 else
700 tp->offload &= ~TYPHOON_OFFLOAD_VLAN;
701
702 /* If the interface is up, the runtime is running -- and we
703 * must be up for the vlan core to call us.
704 *
705 * Do the command outside of the spin lock, as it is slow.
706 */
707 INIT_COMMAND_WITH_RESPONSE(&xp_cmd,
708 TYPHOON_CMD_SET_OFFLOAD_TASKS);
709 xp_cmd.parm2 = tp->offload;
710 xp_cmd.parm3 = tp->offload;
711 spin_unlock_bh(&tp->state_lock);
712 err = typhoon_issue_command(tp, 1, &xp_cmd, 0, NULL);
713 if(err < 0)
714 printk("%s: vlan offload error %d\n", tp->name, -err);
715 spin_lock_bh(&tp->state_lock);
716 }
717
718 /* now make the change visible */
719 tp->vlgrp = grp;
720 spin_unlock_bh(&tp->state_lock);
721 }
722
723 static void
724 typhoon_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
725 {
726 struct typhoon *tp = (struct typhoon *) dev->priv;
727 spin_lock_bh(&tp->state_lock);
728 if(tp->vlgrp)
729 tp->vlgrp->vlan_devices[vid] = NULL;
730 spin_unlock_bh(&tp->state_lock);
731 }
732
733 static inline void
734 typhoon_tso_fill(struct sk_buff *skb, struct transmit_ring *txRing,
735 u32 ring_dma)
736 {
737 struct tcpopt_desc *tcpd;
738 u32 tcpd_offset = ring_dma;
739
740 tcpd = (struct tcpopt_desc *) (txRing->ringBase + txRing->lastWrite);
741 tcpd_offset += txRing->lastWrite;
742 tcpd_offset += offsetof(struct tcpopt_desc, bytesTx);
743 typhoon_inc_tx_index(&txRing->lastWrite, 1);
744
745 tcpd->flags = TYPHOON_OPT_DESC | TYPHOON_OPT_TCP_SEG;
746 tcpd->numDesc = 1;
747 tcpd->mss_flags = cpu_to_le16(skb_tso_size(skb));
748 tcpd->mss_flags |= TYPHOON_TSO_FIRST | TYPHOON_TSO_LAST;
749 tcpd->respAddrLo = cpu_to_le32(tcpd_offset);
750 tcpd->bytesTx = cpu_to_le32(skb->len);
751 tcpd->status = 0;
752 }
753
754 static int
755 typhoon_start_tx(struct sk_buff *skb, struct net_device *dev)
756 {
757 struct typhoon *tp = (struct typhoon *) dev->priv;
758 struct transmit_ring *txRing;
759 struct tx_desc *txd, *first_txd;
760 dma_addr_t skb_dma;
761 int numDesc;
762
763 /* we have two rings to choose from, but we only use txLo for now
764 * If we start using the Hi ring as well, we'll need to update
765 * typhoon_stop_runtime(), typhoon_interrupt(), typhoon_num_free_tx(),
766 * and TXHI_ENTIRES to match, as well as update the TSO code below
767 * to get the right DMA address
768 */
769 txRing = &tp->txLoRing;
770
771 /* We need one descriptor for each fragment of the sk_buff, plus the
772 * one for the ->data area of it.
773 *
774 * The docs say a maximum of 16 fragment descriptors per TCP option
775 * descriptor, then make a new packet descriptor and option descriptor
776 * for the next 16 fragments. The engineers say just an option
777 * descriptor is needed. I've tested up to 26 fragments with a single
778 * packet descriptor/option descriptor combo, so I use that for now.
779 *
780 * If problems develop with TSO, check this first.
781 */
782 numDesc = skb_shinfo(skb)->nr_frags + 1;
783 if(skb_tso_size(skb))
784 numDesc++;
785
786 /* When checking for free space in the ring, we need to also
787 * account for the initial Tx descriptor, and we always must leave
788 * at least one descriptor unused in the ring so that it doesn't
789 * wrap and look empty.
790 *
791 * The only time we should loop here is when we hit the race
792 * between marking the queue awake and updating the cleared index.
793 * Just loop and it will appear. This comes from the acenic driver.
794 */
795 while(unlikely(typhoon_num_free_tx(txRing) < (numDesc + 2)))
796 smp_rmb();
797
798 first_txd = (struct tx_desc *) (txRing->ringBase + txRing->lastWrite);
799 typhoon_inc_tx_index(&txRing->lastWrite, 1);
800
801 first_txd->flags = TYPHOON_TX_DESC | TYPHOON_DESC_VALID;
802 first_txd->numDesc = 0;
803 first_txd->len = 0;
804 first_txd->addr = (u64)((unsigned long) skb) & 0xffffffff;
805 first_txd->addrHi = (u64)((unsigned long) skb) >> 32;
806 first_txd->processFlags = 0;
807
808 if(skb->ip_summed == CHECKSUM_HW) {
809 /* The 3XP will figure out if this is UDP/TCP */
810 first_txd->processFlags |= TYPHOON_TX_PF_TCP_CHKSUM;
811 first_txd->processFlags |= TYPHOON_TX_PF_UDP_CHKSUM;
812 first_txd->processFlags |= TYPHOON_TX_PF_IP_CHKSUM;
813 }
814
815 if(vlan_tx_tag_present(skb)) {
816 first_txd->processFlags |=
817 TYPHOON_TX_PF_INSERT_VLAN | TYPHOON_TX_PF_VLAN_PRIORITY;
818 first_txd->processFlags |=
819 cpu_to_le32(htons(vlan_tx_tag_get(skb)) <<
820 TYPHOON_TX_PF_VLAN_TAG_SHIFT);
821 }
822
823 if(skb_tso_size(skb)) {
824 first_txd->processFlags |= TYPHOON_TX_PF_TCP_SEGMENT;
825 first_txd->numDesc++;
826
827 typhoon_tso_fill(skb, txRing, tp->txlo_dma_addr);
828 }
829
830 txd = (struct tx_desc *) (txRing->ringBase + txRing->lastWrite);
831 typhoon_inc_tx_index(&txRing->lastWrite, 1);
832
833 /* No need to worry about padding packet -- the firmware pads
834 * it with zeros to ETH_ZLEN for us.
835 */
836 if(skb_shinfo(skb)->nr_frags == 0) {
837 skb_dma = pci_map_single(tp->tx_pdev, skb->data, skb->len,
838 PCI_DMA_TODEVICE);
839 txd->flags = TYPHOON_FRAG_DESC | TYPHOON_DESC_VALID;
840 txd->len = cpu_to_le16(skb->len);
841 txd->addr = cpu_to_le32(skb_dma);
842 txd->addrHi = 0;
843 first_txd->numDesc++;
844 } else {
845 int i, len;
846
847 len = skb_headlen(skb);
848 skb_dma = pci_map_single(tp->tx_pdev, skb->data, len,
849 PCI_DMA_TODEVICE);
850 txd->flags = TYPHOON_FRAG_DESC | TYPHOON_DESC_VALID;
851 txd->len = cpu_to_le16(len);
852 txd->addr = cpu_to_le32(skb_dma);
853 txd->addrHi = 0;
854 first_txd->numDesc++;
855
856 for(i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
857 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
858 void *frag_addr;
859
860 txd = (struct tx_desc *) (txRing->ringBase +
861 txRing->lastWrite);
862 typhoon_inc_tx_index(&txRing->lastWrite, 1);
863
864 len = frag->size;
865 frag_addr = (void *) page_address(frag->page) +
866 frag->page_offset;
867 skb_dma = pci_map_single(tp->tx_pdev, frag_addr, len,
868 PCI_DMA_TODEVICE);
869 txd->flags = TYPHOON_FRAG_DESC | TYPHOON_DESC_VALID;
870 txd->len = cpu_to_le16(len);
871 txd->addr = cpu_to_le32(skb_dma);
872 txd->addrHi = 0;
873 first_txd->numDesc++;
874 }
875 }
876
877 /* Kick the 3XP
878 */
879 wmb();
880 writel(txRing->lastWrite, tp->tx_ioaddr + txRing->writeRegister);
881
882 dev->trans_start = jiffies;
883
884 /* If we don't have room to put the worst case packet on the
885 * queue, then we must stop the queue. We need 2 extra
886 * descriptors -- one to prevent ring wrap, and one for the
887 * Tx header.
888 */
889 numDesc = MAX_SKB_FRAGS + TSO_NUM_DESCRIPTORS + 1;
890
891 if(typhoon_num_free_tx(txRing) < (numDesc + 2)) {
892 netif_stop_queue(dev);
893
894 /* A Tx complete IRQ could have gotten inbetween, making
895 * the ring free again. Only need to recheck here, since
896 * Tx is serialized.
897 */
898 if(typhoon_num_free_tx(txRing) >= (numDesc + 2))
899 netif_wake_queue(dev);
900 }
901
902 return 0;
903 }
904
905 static void
906 typhoon_set_rx_mode(struct net_device *dev)
907 {
908 struct typhoon *tp = (struct typhoon *) dev->priv;
909 struct cmd_desc xp_cmd;
910 u32 mc_filter[2];
911 u16 filter;
912
913 filter = TYPHOON_RX_FILTER_DIRECTED | TYPHOON_RX_FILTER_BROADCAST;
914 if(dev->flags & IFF_PROMISC) {
915 printk(KERN_NOTICE "%s: Promiscuous mode enabled.\n",
916 dev->name);
917 filter |= TYPHOON_RX_FILTER_PROMISCOUS;
918 } else if((dev->mc_count > multicast_filter_limit) ||
919 (dev->flags & IFF_ALLMULTI)) {
920 /* Too many to match, or accept all multicasts. */
921 filter |= TYPHOON_RX_FILTER_ALL_MCAST;
922 } else if(dev->mc_count) {
923 struct dev_mc_list *mclist;
924 int i;
925
926 memset(mc_filter, 0, sizeof(mc_filter));
927 for(i = 0, mclist = dev->mc_list; mclist && i < dev->mc_count;
928 i++, mclist = mclist->next) {
929 int bit = ether_crc(ETH_ALEN, mclist->dmi_addr) & 0x3f;
930 mc_filter[bit >> 5] |= 1 << (bit & 0x1f);
931 }
932
933 INIT_COMMAND_NO_RESPONSE(&xp_cmd,
934 TYPHOON_CMD_SET_MULTICAST_HASH);
935 xp_cmd.parm1 = TYPHOON_MCAST_HASH_SET;
936 xp_cmd.parm2 = cpu_to_le32(mc_filter[0]);
937 xp_cmd.parm3 = cpu_to_le32(mc_filter[1]);
938 typhoon_issue_command(tp, 1, &xp_cmd, 0, NULL);
939
940 filter |= TYPHOON_RX_FILTER_MCAST_HASH;
941 }
942
943 INIT_COMMAND_NO_RESPONSE(&xp_cmd, TYPHOON_CMD_SET_RX_FILTER);
944 xp_cmd.parm1 = filter;
945 typhoon_issue_command(tp, 1, &xp_cmd, 0, NULL);
946 }
947
948 static int
949 typhoon_do_get_stats(struct typhoon *tp)
950 {
951 struct net_device_stats *stats = &tp->stats;
952 struct net_device_stats *saved = &tp->stats_saved;
953 struct cmd_desc xp_cmd;
954 struct resp_desc xp_resp[7];
955 struct stats_resp *s = (struct stats_resp *) xp_resp;
956 int err;
957
958 INIT_COMMAND_WITH_RESPONSE(&xp_cmd, TYPHOON_CMD_READ_STATS);
959 err = typhoon_issue_command(tp, 1, &xp_cmd, 7, xp_resp);
960 if(err < 0)
961 return err;
962
963 /* 3Com's Linux driver uses txMultipleCollisions as it's
964 * collisions value, but there is some other collision info as well...
965 */
966 stats->tx_packets = le32_to_cpu(s->txPackets);
967 stats->tx_bytes = le32_to_cpu(s->txBytes);
968 stats->tx_errors = le32_to_cpu(s->txCarrierLost);
969 stats->tx_carrier_errors = le32_to_cpu(s->txCarrierLost);
970 stats->collisions = le32_to_cpu(s->txMultipleCollisions);
971 stats->rx_packets = le32_to_cpu(s->rxPacketsGood);
972 stats->rx_bytes = le32_to_cpu(s->rxBytesGood);
973 stats->rx_fifo_errors = le32_to_cpu(s->rxFifoOverruns);
974 stats->rx_errors = le32_to_cpu(s->rxFifoOverruns) +
975 le32_to_cpu(s->BadSSD) + le32_to_cpu(s->rxCrcErrors);
976 stats->rx_crc_errors = le32_to_cpu(s->rxCrcErrors);
977 stats->rx_length_errors = le32_to_cpu(s->rxOversized);
978 tp->speed = (s->linkStatus & TYPHOON_LINK_100MBPS) ?
979 SPEED_100 : SPEED_10;
980 tp->duplex = (s->linkStatus & TYPHOON_LINK_FULL_DUPLEX) ?
981 DUPLEX_FULL : DUPLEX_HALF;
982
983 /* add in the saved statistics
984 */
985 stats->tx_packets += saved->tx_packets;
986 stats->tx_bytes += saved->tx_bytes;
987 stats->tx_errors += saved->tx_errors;
988 stats->collisions += saved->collisions;
989 stats->rx_packets += saved->rx_packets;
990 stats->rx_bytes += saved->rx_bytes;
991 stats->rx_fifo_errors += saved->rx_fifo_errors;
992 stats->rx_errors += saved->rx_errors;
993 stats->rx_crc_errors += saved->rx_crc_errors;
994 stats->rx_length_errors += saved->rx_length_errors;
995
996 return 0;
997 }
998
999 static struct net_device_stats *
1000 typhoon_get_stats(struct net_device *dev)
1001 {
1002 struct typhoon *tp = (struct typhoon *) dev->priv;
1003 struct net_device_stats *stats = &tp->stats;
1004 struct net_device_stats *saved = &tp->stats_saved;
1005
1006 smp_rmb();
1007 if(tp->card_state == Sleeping)
1008 return saved;
1009
1010 if(typhoon_do_get_stats(tp) < 0) {
1011 printk(KERN_ERR "%s: error getting stats\n", dev->name);
1012 return saved;
1013 }
1014
1015 return stats;
1016 }
1017
1018 static int
1019 typhoon_set_mac_address(struct net_device *dev, void *addr)
1020 {
1021 struct sockaddr *saddr = (struct sockaddr *) addr;
1022
1023 if(netif_running(dev))
1024 return -EBUSY;
1025
1026 memcpy(dev->dev_addr, saddr->sa_data, dev->addr_len);
1027 return 0;
1028 }
1029
1030 static inline void
1031 typhoon_ethtool_gdrvinfo(struct typhoon *tp, struct ethtool_drvinfo *info)
1032 {
1033 struct pci_dev *pci_dev = tp->pdev;
1034 struct cmd_desc xp_cmd;
1035 struct resp_desc xp_resp[3];
1036
1037 smp_rmb();
1038 if(tp->card_state == Sleeping) {
1039 strcpy(info->fw_version, "Sleep image");
1040 } else {
1041 INIT_COMMAND_WITH_RESPONSE(&xp_cmd, TYPHOON_CMD_READ_VERSIONS);
1042 if(typhoon_issue_command(tp, 1, &xp_cmd, 3, xp_resp) < 0) {
1043 strcpy(info->fw_version, "Unknown runtime");
1044 } else {
1045 strncpy(info->fw_version, (char *) &xp_resp[1], 32);
1046 info->fw_version[31] = 0;
1047 }
1048 }
1049
1050 strcpy(info->driver, DRV_MODULE_NAME);
1051 strcpy(info->version, DRV_MODULE_VERSION);
1052 strcpy(info->bus_info, pci_dev->slot_name);
1053 }
1054
1055 static inline void
1056 typhoon_ethtool_gset(struct typhoon *tp, struct ethtool_cmd *cmd)
1057 {
1058 cmd->supported = SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full |
1059 SUPPORTED_Autoneg;
1060
1061 switch (tp->xcvr_select) {
1062 case TYPHOON_XCVR_10HALF:
1063 cmd->advertising = ADVERTISED_10baseT_Half;
1064 break;
1065 case TYPHOON_XCVR_10FULL:
1066 cmd->advertising = ADVERTISED_10baseT_Full;
1067 break;
1068 case TYPHOON_XCVR_100HALF:
1069 cmd->advertising = ADVERTISED_100baseT_Half;
1070 break;
1071 case TYPHOON_XCVR_100FULL:
1072 cmd->advertising = ADVERTISED_100baseT_Full;
1073 break;
1074 case TYPHOON_XCVR_AUTONEG:
1075 cmd->advertising = ADVERTISED_10baseT_Half |
1076 ADVERTISED_10baseT_Full |
1077 ADVERTISED_100baseT_Half |
1078 ADVERTISED_100baseT_Full |
1079 ADVERTISED_Autoneg;
1080 break;
1081 }
1082
1083 if(tp->capabilities & TYPHOON_FIBER) {
1084 cmd->supported |= SUPPORTED_FIBRE;
1085 cmd->advertising |= ADVERTISED_FIBRE;
1086 cmd->port = PORT_FIBRE;
1087 } else {
1088 cmd->supported |= SUPPORTED_10baseT_Half |
1089 SUPPORTED_10baseT_Full |
1090 SUPPORTED_TP;
1091 cmd->advertising |= ADVERTISED_TP;
1092 cmd->port = PORT_TP;
1093 }
1094
1095 /* need to get stats to make these link speed/duplex valid */
1096 typhoon_do_get_stats(tp);
1097 cmd->speed = tp->speed;
1098 cmd->duplex = tp->duplex;
1099 cmd->phy_address = 0;
1100 cmd->transceiver = XCVR_INTERNAL;
1101 if(tp->xcvr_select == TYPHOON_XCVR_AUTONEG)
1102 cmd->autoneg = AUTONEG_ENABLE;
1103 else
1104 cmd->autoneg = AUTONEG_DISABLE;
1105 cmd->maxtxpkt = 1;
1106 cmd->maxrxpkt = 1;
1107 }
1108
1109 static inline int
1110 typhoon_ethtool_sset(struct typhoon *tp, struct ethtool_cmd *cmd)
1111 {
1112 struct cmd_desc xp_cmd;
1113 int xcvr;
1114 int err;
1115
1116 if(cmd->autoneg == AUTONEG_ENABLE) {
1117 xcvr = TYPHOON_XCVR_AUTONEG;
1118 } else {
1119 if(cmd->duplex == DUPLEX_HALF) {
1120 if(cmd->speed == SPEED_10)
1121 xcvr = TYPHOON_XCVR_10HALF;
1122 else if(cmd->speed == SPEED_100)
1123 xcvr = TYPHOON_XCVR_100HALF;
1124 else
1125 return -EINVAL;
1126 } else if(cmd->duplex == DUPLEX_FULL) {
1127 if(cmd->speed == SPEED_10)
1128 xcvr = TYPHOON_XCVR_10FULL;
1129 else if(cmd->speed == SPEED_100)
1130 xcvr = TYPHOON_XCVR_100FULL;
1131 else
1132 return -EINVAL;
1133 } else
1134 return -EINVAL;
1135 }
1136
1137 INIT_COMMAND_NO_RESPONSE(&xp_cmd, TYPHOON_CMD_XCVR_SELECT);
1138 xp_cmd.parm1 = cpu_to_le16(xcvr);
1139 err = typhoon_issue_command(tp, 1, &xp_cmd, 0, NULL);
1140 if(err < 0)
1141 return err;
1142
1143 tp->xcvr_select = xcvr;
1144 if(cmd->autoneg == AUTONEG_ENABLE) {
1145 tp->speed = 0xff; /* invalid */
1146 tp->duplex = 0xff; /* invalid */
1147 } else {
1148 tp->speed = cmd->speed;
1149 tp->duplex = cmd->duplex;
1150 }
1151
1152 return 0;
1153 }
1154
1155 static inline int
1156 typhoon_ethtool_ioctl(struct net_device *dev, void *useraddr)
1157 {
1158 struct typhoon *tp = (struct typhoon *) dev->priv;
1159 u32 ethcmd;
1160
1161 if(copy_from_user(&ethcmd, useraddr, sizeof(ethcmd)))
1162 return -EFAULT;
1163
1164 switch (ethcmd) {
1165 case ETHTOOL_GDRVINFO: {
1166 struct ethtool_drvinfo info = { ETHTOOL_GDRVINFO };
1167
1168 typhoon_ethtool_gdrvinfo(tp, &info);
1169 if(copy_to_user(useraddr, &info, sizeof(info)))
1170 return -EFAULT;
1171 return 0;
1172 }
1173 case ETHTOOL_GSET: {
1174 struct ethtool_cmd cmd = { ETHTOOL_GSET };
1175
1176 typhoon_ethtool_gset(tp, &cmd);
1177 if(copy_to_user(useraddr, &cmd, sizeof(cmd)))
1178 return -EFAULT;
1179 return 0;
1180 }
1181 case ETHTOOL_SSET: {
1182 struct ethtool_cmd cmd;
1183 if(copy_from_user(&cmd, useraddr, sizeof(cmd)))
1184 return -EFAULT;
1185
1186 return typhoon_ethtool_sset(tp, &cmd);
1187 }
1188 case ETHTOOL_GLINK:{
1189 struct ethtool_value edata = { ETHTOOL_GLINK };
1190
1191 edata.data = netif_carrier_ok(dev) ? 1 : 0;
1192 if(copy_to_user(useraddr, &edata, sizeof(edata)))
1193 return -EFAULT;
1194 return 0;
1195 }
1196 case ETHTOOL_GWOL: {
1197 struct ethtool_wolinfo wol = { ETHTOOL_GWOL };
1198
1199 if(tp->wol_events & TYPHOON_WAKE_LINK_EVENT)
1200 wol.wolopts |= WAKE_PHY;
1201 if(tp->wol_events & TYPHOON_WAKE_MAGIC_PKT)
1202 wol.wolopts |= WAKE_MAGIC;
1203 if(copy_to_user(useraddr, &wol, sizeof(wol)))
1204 return -EFAULT;
1205 return 0;
1206 }
1207 case ETHTOOL_SWOL: {
1208 struct ethtool_wolinfo wol;
1209
1210 if(copy_from_user(&wol, useraddr, sizeof(wol)))
1211 return -EFAULT;
1212 tp->wol_events = 0;
1213 if(wol.wolopts & WAKE_PHY)
1214 tp->wol_events |= TYPHOON_WAKE_LINK_EVENT;
1215 if(wol.wolopts & WAKE_MAGIC)
1216 tp->wol_events |= TYPHOON_WAKE_MAGIC_PKT;
1217 return 0;
1218 }
1219 default:
1220 break;
1221 }
1222
1223 return -EOPNOTSUPP;
1224 }
1225
1226 static int
1227 typhoon_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
1228 {
1229 switch (cmd) {
1230 case SIOCETHTOOL:
1231 return typhoon_ethtool_ioctl(dev, (void *) ifr->ifr_data);
1232 default:
1233 break;
1234 }
1235
1236 return -EOPNOTSUPP;
1237 }
1238
1239 static int
1240 typhoon_wait_interrupt(unsigned long ioaddr)
1241 {
1242 int i, err = 0;
1243
1244 for(i = 0; i < TYPHOON_WAIT_TIMEOUT; i++) {
1245 if(readl(ioaddr + TYPHOON_REG_INTR_STATUS) &
1246 TYPHOON_INTR_BOOTCMD)
1247 goto out;
1248 udelay(TYPHOON_UDELAY);
1249 }
1250
1251 err = -ETIMEDOUT;
1252
1253 out:
1254 writel(TYPHOON_INTR_BOOTCMD, ioaddr + TYPHOON_REG_INTR_STATUS);
1255 return err;
1256 }
1257
1258 #define shared_offset(x) offsetof(struct typhoon_shared, x)
1259
1260 static void
1261 typhoon_init_interface(struct typhoon *tp)
1262 {
1263 struct typhoon_interface *iface = &tp->shared->iface;
1264 dma_addr_t shared_dma;
1265
1266 memset(tp->shared, 0, sizeof(struct typhoon_shared));
1267
1268 /* The *Hi members of iface are all init'd to zero by the memset().
1269 */
1270 shared_dma = tp->shared_dma + shared_offset(indexes);
1271 iface->ringIndex = cpu_to_le32(shared_dma);
1272
1273 shared_dma = tp->shared_dma + shared_offset(txLo);
1274 iface->txLoAddr = cpu_to_le32(shared_dma);
1275 iface->txLoSize = cpu_to_le32(TXLO_ENTRIES * sizeof(struct tx_desc));
1276
1277 shared_dma = tp->shared_dma + shared_offset(txHi);
1278 iface->txHiAddr = cpu_to_le32(shared_dma);
1279 iface->txHiSize = cpu_to_le32(TXHI_ENTRIES * sizeof(struct tx_desc));
1280
1281 shared_dma = tp->shared_dma + shared_offset(rxBuff);
1282 iface->rxBuffAddr = cpu_to_le32(shared_dma);
1283 iface->rxBuffSize = cpu_to_le32(RXFREE_ENTRIES *
1284 sizeof(struct rx_free));
1285
1286 shared_dma = tp->shared_dma + shared_offset(rxLo);
1287 iface->rxLoAddr = cpu_to_le32(shared_dma);
1288 iface->rxLoSize = cpu_to_le32(RX_ENTRIES * sizeof(struct rx_desc));
1289
1290 shared_dma = tp->shared_dma + shared_offset(rxHi);
1291 iface->rxHiAddr = cpu_to_le32(shared_dma);
1292 iface->rxHiSize = cpu_to_le32(RX_ENTRIES * sizeof(struct rx_desc));
1293
1294 shared_dma = tp->shared_dma + shared_offset(cmd);
1295 iface->cmdAddr = cpu_to_le32(shared_dma);
1296 iface->cmdSize = cpu_to_le32(COMMAND_RING_SIZE);
1297
1298 shared_dma = tp->shared_dma + shared_offset(resp);
1299 iface->respAddr = cpu_to_le32(shared_dma);
1300 iface->respSize = cpu_to_le32(RESPONSE_RING_SIZE);
1301
1302 shared_dma = tp->shared_dma + shared_offset(zeroWord);
1303 iface->zeroAddr = cpu_to_le32(shared_dma);
1304
1305 tp->indexes = &tp->shared->indexes;
1306 tp->txLoRing.ringBase = (u8 *) tp->shared->txLo;
1307 tp->txHiRing.ringBase = (u8 *) tp->shared->txHi;
1308 tp->rxLoRing.ringBase = (u8 *) tp->shared->rxLo;
1309 tp->rxHiRing.ringBase = (u8 *) tp->shared->rxHi;
1310 tp->rxBuffRing.ringBase = (u8 *) tp->shared->rxBuff;
1311 tp->cmdRing.ringBase = (u8 *) tp->shared->cmd;
1312 tp->respRing.ringBase = (u8 *) tp->shared->resp;;
1313
1314 tp->txLoRing.writeRegister = TYPHOON_REG_TX_LO_READY;
1315 tp->txHiRing.writeRegister = TYPHOON_REG_TX_HI_READY;
1316
1317 tp->txlo_dma_addr = iface->txLoAddr;
1318 tp->card_state = Sleeping;
1319 smp_wmb();
1320
1321 tp->offload = TYPHOON_OFFLOAD_IP_CHKSUM | TYPHOON_OFFLOAD_TCP_CHKSUM;
1322 tp->offload |= TYPHOON_OFFLOAD_UDP_CHKSUM | TSO_OFFLOAD_ON;
1323
1324 spin_lock_init(&tp->command_lock);
1325 spin_lock_init(&tp->state_lock);
1326 }
1327
1328 static void
1329 typhoon_init_rings(struct typhoon *tp)
1330 {
1331 memset(tp->indexes, 0, sizeof(struct typhoon_indexes));
1332
1333 tp->txLoRing.lastWrite = 0;
1334 tp->txHiRing.lastWrite = 0;
1335 tp->rxLoRing.lastWrite = 0;
1336 tp->rxHiRing.lastWrite = 0;
1337 tp->rxBuffRing.lastWrite = 0;
1338 tp->cmdRing.lastWrite = 0;
1339 tp->cmdRing.lastWrite = 0;
1340
1341 tp->txLoRing.lastRead = 0;
1342 tp->txHiRing.lastRead = 0;
1343 }
1344
1345 static int
1346 typhoon_download_firmware(struct typhoon *tp)
1347 {
1348 unsigned long ioaddr = tp->ioaddr;
1349 struct pci_dev *pdev = tp->pdev;
1350 struct typhoon_file_header *fHdr;
1351 struct typhoon_section_header *sHdr;
1352 u8 *image_data;
1353 void *dpage;
1354 dma_addr_t dpage_dma;
1355 unsigned int csum;
1356 u32 irqEnabled;
1357 u32 irqMasked;
1358 u32 numSections;
1359 u32 section_len;
1360 u32 len;
1361 u32 load_addr;
1362 int i;
1363 int err;
1364
1365 err = -EINVAL;
1366 fHdr = (struct typhoon_file_header *) typhoon_firmware_image;
1367 image_data = (u8 *) fHdr;
1368
1369 if(memcmp(fHdr->tag, "TYPHOON", 8)) {
1370 printk(KERN_ERR "%s: Invalid firmware image!\n", tp->name);
1371 goto err_out;
1372 }
1373
1374 /* Cannot just map the firmware image using pci_map_single() as
1375 * the firmware is part of the kernel/module image, so we allocate
1376 * some consistent memory to copy the sections into, as it is simpler,
1377 * and short-lived. If we ever split out and require a userland
1378 * firmware loader, then we can revisit this.
1379 */
1380 err = -ENOMEM;
1381 dpage = pci_alloc_consistent(pdev, PAGE_SIZE, &dpage_dma);
1382 if(!dpage) {
1383 printk(KERN_ERR "%s: no DMA mem for firmware\n", tp->name);
1384 goto err_out;
1385 }
1386
1387 irqEnabled = readl(ioaddr + TYPHOON_REG_INTR_ENABLE);
1388 writel(irqEnabled | TYPHOON_INTR_BOOTCMD,
1389 ioaddr + TYPHOON_REG_INTR_ENABLE);
1390 irqMasked = readl(ioaddr + TYPHOON_REG_INTR_MASK);
1391 writel(irqMasked | TYPHOON_INTR_BOOTCMD,
1392 ioaddr + TYPHOON_REG_INTR_MASK);
1393
1394 err = -ETIMEDOUT;
1395 if(typhoon_wait_status(ioaddr, TYPHOON_STATUS_WAITING_FOR_HOST) < 0) {
1396 printk(KERN_ERR "%s: card ready timeout\n", tp->name);
1397 goto err_out_irq;
1398 }
1399
1400 numSections = le32_to_cpu(fHdr->numSections);
1401 load_addr = le32_to_cpu(fHdr->startAddr);
1402
1403 writel(TYPHOON_INTR_BOOTCMD, ioaddr + TYPHOON_REG_INTR_STATUS);
1404 writel(load_addr, ioaddr + TYPHOON_REG_DOWNLOAD_BOOT_ADDR);
1405 typhoon_post_pci_writes(ioaddr);
1406 writel(TYPHOON_BOOTCMD_RUNTIME_IMAGE, ioaddr + TYPHOON_REG_COMMAND);
1407
1408 image_data += sizeof(struct typhoon_file_header);
1409
1410 /* The readl() in typhoon_wait_interrupt() will force the
1411 * last write to the command register to post, so
1412 * we don't need a typhoon_post_pci_writes() after it.
1413 */
1414 for(i = 0; i < numSections; i++) {
1415 sHdr = (struct typhoon_section_header *) image_data;
1416 image_data += sizeof(struct typhoon_section_header);
1417 load_addr = le32_to_cpu(sHdr->startAddr);
1418 section_len = le32_to_cpu(sHdr->len);
1419
1420 while(section_len) {
1421 len = min_t(u32, section_len, PAGE_SIZE);
1422
1423 if(typhoon_wait_interrupt(ioaddr) < 0 ||
1424 readl(ioaddr + TYPHOON_REG_STATUS) !=
1425 TYPHOON_STATUS_WAITING_FOR_SEGMENT) {
1426 printk(KERN_ERR "%s: segment ready timeout\n",
1427 tp->name);
1428 goto err_out_irq;
1429 }
1430
1431 /* Do an pseudo IPv4 checksum on the data -- first
1432 * need to convert each u16 to cpu order before
1433 * summing. Fortunately, due to the properties of
1434 * the checksum, we can do this once, at the end.
1435 */
1436 csum = csum_partial_copy_nocheck(image_data, dpage,
1437 len, 0);
1438 csum = csum_fold(csum);
1439 csum = le16_to_cpu(csum);
1440
1441 writel(len, ioaddr + TYPHOON_REG_BOOT_LENGTH);
1442 writel(csum, ioaddr + TYPHOON_REG_BOOT_CHECKSUM);
1443 writel(load_addr, ioaddr + TYPHOON_REG_BOOT_DEST_ADDR);
1444 writel(0, ioaddr + TYPHOON_REG_BOOT_DATA_HI);
1445 writel(dpage_dma, ioaddr + TYPHOON_REG_BOOT_DATA_LO);
1446 typhoon_post_pci_writes(ioaddr);
1447 writel(TYPHOON_BOOTCMD_SEG_AVAILABLE,
1448 ioaddr + TYPHOON_REG_COMMAND);
1449
1450 image_data += len;
1451 load_addr += len;
1452 section_len -= len;
1453 }
1454 }
1455
1456 if(typhoon_wait_interrupt(ioaddr) < 0 ||
1457 readl(ioaddr + TYPHOON_REG_STATUS) !=
1458 TYPHOON_STATUS_WAITING_FOR_SEGMENT) {
1459 printk(KERN_ERR "%s: final segment ready timeout\n", tp->name);
1460 goto err_out_irq;
1461 }
1462
1463 writel(TYPHOON_BOOTCMD_DNLD_COMPLETE, ioaddr + TYPHOON_REG_COMMAND);
1464
1465 if(typhoon_wait_status(ioaddr, TYPHOON_STATUS_WAITING_FOR_BOOT) < 0) {
1466 printk(KERN_ERR "%s: boot ready timeout, status 0x%0x\n",
1467 tp->name, readl(ioaddr + TYPHOON_REG_STATUS));
1468 goto err_out_irq;
1469 }
1470
1471 err = 0;
1472
1473 err_out_irq:
1474 writel(irqMasked, ioaddr + TYPHOON_REG_INTR_MASK);
1475 writel(irqEnabled, ioaddr + TYPHOON_REG_INTR_ENABLE);
1476
1477 pci_free_consistent(pdev, PAGE_SIZE, dpage, dpage_dma);
1478
1479 err_out:
1480 return err;
1481 }
1482
1483 static int
1484 typhoon_boot_3XP(struct typhoon *tp, u32 initial_status)
1485 {
1486 unsigned long ioaddr = tp->ioaddr;
1487
1488 if(typhoon_wait_status(ioaddr, initial_status) < 0) {
1489 printk(KERN_ERR "%s: boot ready timeout\n", tp->name);
1490 goto out_timeout;
1491 }
1492
1493 writel(0, ioaddr + TYPHOON_REG_BOOT_RECORD_ADDR_HI);
1494 writel(tp->shared_dma, ioaddr + TYPHOON_REG_BOOT_RECORD_ADDR_LO);
1495 typhoon_post_pci_writes(ioaddr);
1496 writel(TYPHOON_BOOTCMD_REG_BOOT_RECORD, ioaddr + TYPHOON_REG_COMMAND);
1497
1498 if(typhoon_wait_status(ioaddr, TYPHOON_STATUS_RUNNING) < 0) {
1499 printk(KERN_ERR "%s: boot finish timeout (status 0x%x)\n",
1500 tp->name, readl(ioaddr + TYPHOON_REG_STATUS));
1501 goto out_timeout;
1502 }
1503
1504 /* Clear the Transmit and Command ready registers
1505 */
1506 writel(0, ioaddr + TYPHOON_REG_TX_HI_READY);
1507 writel(0, ioaddr + TYPHOON_REG_CMD_READY);
1508 writel(0, ioaddr + TYPHOON_REG_TX_LO_READY);
1509 typhoon_post_pci_writes(ioaddr);
1510 writel(TYPHOON_BOOTCMD_BOOT, ioaddr + TYPHOON_REG_COMMAND);
1511
1512 return 0;
1513
1514 out_timeout:
1515 return -ETIMEDOUT;
1516 }
1517
1518 static u32
1519 typhoon_clean_tx(struct typhoon *tp, struct transmit_ring *txRing,
1520 volatile u32 * index)
1521 {
1522 u32 lastRead = txRing->lastRead;
1523 struct tx_desc *tx;
1524 dma_addr_t skb_dma;
1525 int dma_len;
1526 int type;
1527
1528 while(lastRead != le32_to_cpu(*index)) {
1529 tx = (struct tx_desc *) (txRing->ringBase + lastRead);
1530 type = tx->flags & TYPHOON_TYPE_MASK;
1531
1532 if(type == TYPHOON_TX_DESC) {
1533 /* This tx_desc describes a packet.
1534 */
1535 unsigned long ptr = tx->addr | ((u64)tx->addrHi << 32);
1536 struct sk_buff *skb = (struct sk_buff *) ptr;
1537 dev_kfree_skb_irq(skb);
1538 } else if(type == TYPHOON_FRAG_DESC) {
1539 /* This tx_desc describes a memory mapping. Free it.
1540 */
1541 skb_dma = (dma_addr_t) le32_to_cpu(tx->addr);
1542 dma_len = le16_to_cpu(tx->len);
1543 pci_unmap_single(tp->pdev, skb_dma, dma_len,
1544 PCI_DMA_TODEVICE);
1545 }
1546
1547 tx->flags = 0;
1548 typhoon_inc_tx_index(&lastRead, 1);
1549 }
1550
1551 return lastRead;
1552 }
1553
1554 static void
1555 typhoon_tx_complete(struct typhoon *tp, struct transmit_ring *txRing,
1556 volatile u32 * index)
1557 {
1558 u32 lastRead;
1559 int numDesc = MAX_SKB_FRAGS + 1;
1560
1561 /* This will need changing if we start to use the Hi Tx ring. */
1562 lastRead = typhoon_clean_tx(tp, txRing, index);
1563 if(netif_queue_stopped(tp->dev) && typhoon_num_free(txRing->lastWrite,
1564 lastRead, TXLO_ENTRIES) > (numDesc + 2))
1565 netif_wake_queue(tp->dev);
1566
1567 txRing->lastRead = lastRead;
1568 smp_wmb();
1569 }
1570
1571 static void
1572 typhoon_recycle_rx_skb(struct typhoon *tp, u32 idx)
1573 {
1574 struct typhoon_indexes *indexes = tp->indexes;
1575 struct rxbuff_ent *rxb = &tp->rxbuffers[idx];
1576 struct basic_ring *ring = &tp->rxBuffRing;
1577 struct rx_free *r;
1578
1579 if((ring->lastWrite + sizeof(*r)) % (RXFREE_ENTRIES * sizeof(*r)) ==
1580 indexes->rxBuffCleared) {
1581 /* no room in ring, just drop the skb
1582 */
1583 dev_kfree_skb_any(rxb->skb);
1584 rxb->skb = NULL;
1585 return;
1586 }
1587
1588 r = (struct rx_free *) (ring->ringBase + ring->lastWrite);
1589 typhoon_inc_rxfree_index(&ring->lastWrite, 1);
1590 r->virtAddr = idx;
1591 r->physAddr = cpu_to_le32(rxb->dma_addr);
1592
1593 /* Tell the card about it */
1594 wmb();
1595 indexes->rxBuffReady = cpu_to_le32(ring->lastWrite);
1596 }
1597
1598 static int
1599 typhoon_alloc_rx_skb(struct typhoon *tp, u32 idx)
1600 {
1601 struct typhoon_indexes *indexes = tp->indexes;
1602 struct rxbuff_ent *rxb = &tp->rxbuffers[idx];
1603 struct basic_ring *ring = &tp->rxBuffRing;
1604 struct rx_free *r;
1605 struct sk_buff *skb;
1606 dma_addr_t dma_addr;
1607
1608 rxb->skb = NULL;
1609
1610 if((ring->lastWrite + sizeof(*r)) % (RXFREE_ENTRIES * sizeof(*r)) ==
1611 indexes->rxBuffCleared)
1612 return -ENOMEM;
1613
1614 skb = dev_alloc_skb(PKT_BUF_SZ);
1615 if(!skb)
1616 return -ENOMEM;
1617
1618 #if 0
1619 /* Please, 3com, fix the firmware to allow DMA to a unaligned
1620 * address! Pretty please?
1621 */
1622 skb_reserve(skb, 2);
1623 #endif
1624
1625 skb->dev = tp->dev;
1626 dma_addr = pci_map_single(tp->pdev, skb->tail,
1627 PKT_BUF_SZ, PCI_DMA_FROMDEVICE);
1628
1629 /* Since no card does 64 bit DAC, the high bits will never
1630 * change from zero.
1631 */
1632 r = (struct rx_free *) (ring->ringBase + ring->lastWrite);
1633 typhoon_inc_rxfree_index(&ring->lastWrite, 1);
1634 r->virtAddr = idx;
1635 r->physAddr = cpu_to_le32(dma_addr);
1636 rxb->skb = skb;
1637 rxb->dma_addr = dma_addr;
1638
1639 /* Tell the card about it */
1640 wmb();
1641 indexes->rxBuffReady = cpu_to_le32(ring->lastWrite);
1642 return 0;
1643 }
1644
1645 static int
1646 typhoon_rx(struct typhoon *tp, struct basic_ring *rxRing, volatile u32 * ready,
1647 volatile u32 * cleared, int budget)
1648 {
1649 struct rx_desc *rx;
1650 struct sk_buff *skb, *new_skb;
1651 struct rxbuff_ent *rxb;
1652 dma_addr_t dma_addr;
1653 u32 local_ready;
1654 u32 rxaddr;
1655 int pkt_len;
1656 u32 idx;
1657 u32 csum_bits;
1658 int received;
1659
1660 received = 0;
1661 local_ready = le32_to_cpu(*ready);
1662 rxaddr = le32_to_cpu(*cleared);
1663 while(rxaddr != local_ready && budget > 0) {
1664 rx = (struct rx_desc *) (rxRing->ringBase + rxaddr);
1665 idx = rx->addr;
1666 rxb = &tp->rxbuffers[idx];
1667 skb = rxb->skb;
1668 dma_addr = rxb->dma_addr;
1669
1670 rxaddr += sizeof(struct rx_desc);
1671 rxaddr %= RX_ENTRIES * sizeof(struct rx_desc);
1672
1673 if(rx->flags & TYPHOON_RX_ERROR) {
1674 typhoon_recycle_rx_skb(tp, idx);
1675 continue;
1676 }
1677
1678 pkt_len = le16_to_cpu(rx->frameLen);
1679
1680 if(pkt_len < rx_copybreak &&
1681 (new_skb = dev_alloc_skb(pkt_len + 2)) != NULL) {
1682 new_skb->dev = tp->dev;
1683 skb_reserve(new_skb, 2);
1684 pci_dma_sync_single(tp->pdev, dma_addr, PKT_BUF_SZ,
1685 PCI_DMA_FROMDEVICE);
1686 eth_copy_and_sum(new_skb, skb->tail, pkt_len, 0);
1687 skb_put(new_skb, pkt_len);
1688 typhoon_recycle_rx_skb(tp, idx);
1689 } else {
1690 new_skb = skb;
1691 skb_put(new_skb, pkt_len);
1692 pci_unmap_single(tp->pdev, dma_addr, PKT_BUF_SZ,
1693 PCI_DMA_FROMDEVICE);
1694 typhoon_alloc_rx_skb(tp, idx);
1695 }
1696 new_skb->protocol = eth_type_trans(new_skb, tp->dev);
1697 csum_bits = rx->rxStatus & (TYPHOON_RX_IP_CHK_GOOD |
1698 TYPHOON_RX_UDP_CHK_GOOD | TYPHOON_RX_TCP_CHK_GOOD);
1699 if(csum_bits ==
1700 (TYPHOON_RX_IP_CHK_GOOD | TYPHOON_RX_TCP_CHK_GOOD)
1701 || csum_bits ==
1702 (TYPHOON_RX_IP_CHK_GOOD | TYPHOON_RX_UDP_CHK_GOOD)) {
1703 new_skb->ip_summed = CHECKSUM_UNNECESSARY;
1704 } else
1705 new_skb->ip_summed = CHECKSUM_NONE;
1706
1707 spin_lock(&tp->state_lock);
1708 if(tp->vlgrp != NULL && rx->rxStatus & TYPHOON_RX_VLAN)
1709 vlan_hwaccel_receive_skb(new_skb, tp->vlgrp,
1710 ntohl(rx->vlanTag) & 0xffff);
1711 else
1712 netif_receive_skb(new_skb);
1713 spin_unlock(&tp->state_lock);
1714
1715 tp->dev->last_rx = jiffies;
1716 received++;
1717 budget--;
1718 }
1719 *cleared = cpu_to_le32(rxaddr);
1720
1721 return received;
1722 }
1723
1724 static void
1725 typhoon_fill_free_ring(struct typhoon *tp)
1726 {
1727 u32 i;
1728
1729 for(i = 0; i < RXENT_ENTRIES; i++) {
1730 struct rxbuff_ent *rxb = &tp->rxbuffers[i];
1731 if(rxb->skb)
1732 continue;
1733 if(typhoon_alloc_rx_skb(tp, i) < 0)
1734 break;
1735 }
1736 }
1737
1738 static int
1739 typhoon_poll(struct net_device *dev, int *total_budget)
1740 {
1741 struct typhoon *tp = (struct typhoon *) dev->priv;
1742 struct typhoon_indexes *indexes = tp->indexes;
1743 int orig_budget = *total_budget;
1744 int budget, work_done, done;
1745
1746 rmb();
1747 if(!tp->awaiting_resp && indexes->respReady != indexes->respCleared)
1748 typhoon_process_response(tp, 0, NULL);
1749
1750 if(le32_to_cpu(indexes->txLoCleared) != tp->txLoRing.lastRead)
1751 typhoon_tx_complete(tp, &tp->txLoRing, &indexes->txLoCleared);
1752
1753 if(orig_budget > dev->quota)
1754 orig_budget = dev->quota;
1755
1756 budget = orig_budget;
1757 work_done = 0;
1758 done = 1;
1759
1760 if(indexes->rxHiCleared != indexes->rxHiReady) {
1761 work_done = typhoon_rx(tp, &tp->rxHiRing, &indexes->rxHiReady,
1762 &indexes->rxHiCleared, budget);
1763 budget -= work_done;
1764 }
1765
1766 if(indexes->rxLoCleared != indexes->rxLoReady) {
1767 work_done += typhoon_rx(tp, &tp->rxLoRing, &indexes->rxLoReady,
1768 &indexes->rxLoCleared, budget);
1769 }
1770
1771 if(work_done) {
1772 *total_budget -= work_done;
1773 dev->quota -= work_done;
1774
1775 if(work_done >= orig_budget)
1776 done = 0;
1777 }
1778
1779 if(le32_to_cpu(indexes->rxBuffCleared) == tp->rxBuffRing.lastWrite) {
1780 /* rxBuff ring is empty, try to fill it. */
1781 typhoon_fill_free_ring(tp);
1782 }
1783
1784 if(done) {
1785 netif_rx_complete(dev);
1786 writel(TYPHOON_INTR_NONE, tp->ioaddr + TYPHOON_REG_INTR_MASK);
1787 typhoon_post_pci_writes(tp->ioaddr);
1788 }
1789
1790 return (done ? 0 : 1);
1791 }
1792
1793 static irqreturn_t
1794 typhoon_interrupt(int irq, void *dev_instance, struct pt_regs *rgs)
1795 {
1796 struct net_device *dev = (struct net_device *) dev_instance;
1797 unsigned long ioaddr = dev->base_addr;
1798 u32 intr_status;
1799
1800 intr_status = readl(ioaddr + TYPHOON_REG_INTR_STATUS);
1801 if(!(intr_status & TYPHOON_INTR_HOST_INT))
1802 return IRQ_NONE;
1803
1804 writel(intr_status, ioaddr + TYPHOON_REG_INTR_STATUS);
1805
1806 if(netif_rx_schedule_prep(dev)) {
1807 writel(TYPHOON_INTR_ALL, ioaddr + TYPHOON_REG_INTR_MASK);
1808 typhoon_post_pci_writes(ioaddr);
1809 __netif_rx_schedule(dev);
1810 } else {
1811 printk(KERN_ERR "%s: Error, poll already scheduled\n",
1812 dev->name);
1813 }
1814 return IRQ_HANDLED;
1815 }
1816
1817 static void
1818 typhoon_free_rx_rings(struct typhoon *tp)
1819 {
1820 u32 i;
1821
1822 for(i = 0; i < RXENT_ENTRIES; i++) {
1823 struct rxbuff_ent *rxb = &tp->rxbuffers[i];
1824 if(rxb->skb) {
1825 pci_unmap_single(tp->pdev, rxb->dma_addr, PKT_BUF_SZ,
1826 PCI_DMA_FROMDEVICE);
1827 dev_kfree_skb(rxb->skb);
1828 rxb->skb = NULL;
1829 }
1830 }
1831 }
1832
1833 static int
1834 typhoon_sleep(struct typhoon *tp, int state, u16 events)
1835 {
1836 struct pci_dev *pdev = tp->pdev;
1837 unsigned long ioaddr = tp->ioaddr;
1838 struct cmd_desc xp_cmd;
1839 int err;
1840
1841 INIT_COMMAND_WITH_RESPONSE(&xp_cmd, TYPHOON_CMD_ENABLE_WAKE_EVENTS);
1842 xp_cmd.parm1 = events;
1843 err = typhoon_issue_command(tp, 1, &xp_cmd, 0, NULL);
1844 if(err < 0) {
1845 printk(KERN_ERR "%s: typhoon_sleep(): wake events cmd err %d\n",
1846 tp->name, err);
1847 return err;
1848 }
1849
1850 INIT_COMMAND_NO_RESPONSE(&xp_cmd, TYPHOON_CMD_GOTO_SLEEP);
1851 err = typhoon_issue_command(tp, 1, &xp_cmd, 0, NULL);
1852 if(err < 0) {
1853 printk(KERN_ERR "%s: typhoon_sleep(): sleep cmd err %d\n",
1854 tp->name, err);
1855 return err;
1856 }
1857
1858 if(typhoon_wait_status(ioaddr, TYPHOON_STATUS_SLEEPING) < 0)
1859 return -ETIMEDOUT;
1860
1861 pci_enable_wake(tp->pdev, state, 1);
1862 pci_disable_device(pdev);
1863 return pci_set_power_state(pdev, state);
1864 }
1865
1866 static int
1867 typhoon_wakeup(struct typhoon *tp, int wait_type)
1868 {
1869 struct pci_dev *pdev = tp->pdev;
1870 unsigned long ioaddr = tp->ioaddr;
1871
1872 pci_set_power_state(pdev, 0);
1873 pci_restore_state(pdev, tp->pci_state);
1874
1875 writel(TYPHOON_BOOTCMD_WAKEUP, ioaddr + TYPHOON_REG_COMMAND);
1876 if(typhoon_wait_status(ioaddr, TYPHOON_STATUS_WAITING_FOR_HOST) < 0)
1877 return typhoon_reset(ioaddr, wait_type);
1878
1879 return 0;
1880 }
1881
1882 static int
1883 typhoon_start_runtime(struct typhoon *tp)
1884 {
1885 struct net_device *dev = tp->dev;
1886 unsigned long ioaddr = tp->ioaddr;
1887 struct cmd_desc xp_cmd;
1888 int err;
1889
1890 typhoon_init_rings(tp);
1891 typhoon_fill_free_ring(tp);
1892
1893 err = typhoon_download_firmware(tp);
1894 if(err < 0) {
1895 printk("%s: cannot load runtime on 3XP\n", tp->name);
1896 goto error_out;
1897 }
1898
1899 if(typhoon_boot_3XP(tp, TYPHOON_STATUS_WAITING_FOR_BOOT) < 0) {
1900 printk("%s: cannot boot 3XP\n", tp->name);
1901 err = -EIO;
1902 goto error_out;
1903 }
1904
1905 INIT_COMMAND_NO_RESPONSE(&xp_cmd, TYPHOON_CMD_SET_MAX_PKT_SIZE);
1906 xp_cmd.parm1 = cpu_to_le16(PKT_BUF_SZ);
1907 err = typhoon_issue_command(tp, 1, &xp_cmd, 0, NULL);
1908 if(err < 0)
1909 goto error_out;
1910
1911 INIT_COMMAND_NO_RESPONSE(&xp_cmd, TYPHOON_CMD_SET_MAC_ADDRESS);
1912 xp_cmd.parm1 = cpu_to_le16(ntohs(*(u16 *)&dev->dev_addr[0]));
1913 xp_cmd.parm2 = cpu_to_le32(ntohl(*(u32 *)&dev->dev_addr[2]));
1914 err = typhoon_issue_command(tp, 1, &xp_cmd, 0, NULL);
1915 if(err < 0)
1916 goto error_out;
1917
1918 /* Disable IRQ coalescing -- we can reenable it when 3Com gives
1919 * us some more information on how to control it.
1920 */
1921 INIT_COMMAND_WITH_RESPONSE(&xp_cmd, TYPHOON_CMD_IRQ_COALESCE_CTRL);
1922 xp_cmd.parm1 = 0;
1923 err = typhoon_issue_command(tp, 1, &xp_cmd, 0, NULL);
1924 if(err < 0)
1925 goto error_out;
1926
1927 INIT_COMMAND_NO_RESPONSE(&xp_cmd, TYPHOON_CMD_XCVR_SELECT);
1928 xp_cmd.parm1 = tp->xcvr_select;
1929 err = typhoon_issue_command(tp, 1, &xp_cmd, 0, NULL);
1930 if(err < 0)
1931 goto error_out;
1932
1933 INIT_COMMAND_NO_RESPONSE(&xp_cmd, TYPHOON_CMD_VLAN_TYPE_WRITE);
1934 xp_cmd.parm1 = __constant_cpu_to_le16(ETH_P_8021Q);
1935 err = typhoon_issue_command(tp, 1, &xp_cmd, 0, NULL);
1936 if(err < 0)
1937 goto error_out;
1938
1939 INIT_COMMAND_NO_RESPONSE(&xp_cmd, TYPHOON_CMD_SET_OFFLOAD_TASKS);
1940 spin_lock_bh(&tp->state_lock);
1941 xp_cmd.parm2 = tp->offload;
1942 xp_cmd.parm3 = tp->offload;
1943 err = typhoon_issue_command(tp, 1, &xp_cmd, 0, NULL);
1944 spin_unlock_bh(&tp->state_lock);
1945 if(err < 0)
1946 goto error_out;
1947
1948 typhoon_set_rx_mode(dev);
1949
1950 INIT_COMMAND_NO_RESPONSE(&xp_cmd, TYPHOON_CMD_TX_ENABLE);
1951 err = typhoon_issue_command(tp, 1, &xp_cmd, 0, NULL);
1952 if(err < 0)
1953 goto error_out;
1954
1955 INIT_COMMAND_WITH_RESPONSE(&xp_cmd, TYPHOON_CMD_RX_ENABLE);
1956 err = typhoon_issue_command(tp, 1, &xp_cmd, 0, NULL);
1957 if(err < 0)
1958 goto error_out;
1959
1960 tp->card_state = Running;
1961 smp_wmb();
1962
1963 writel(TYPHOON_INTR_ENABLE_ALL, ioaddr + TYPHOON_REG_INTR_ENABLE);
1964 writel(TYPHOON_INTR_NONE, ioaddr + TYPHOON_REG_INTR_MASK);
1965 typhoon_post_pci_writes(ioaddr);
1966
1967 return 0;
1968
1969 error_out:
1970 typhoon_reset(ioaddr, WaitNoSleep);
1971 typhoon_free_rx_rings(tp);
1972 typhoon_init_rings(tp);
1973 return err;
1974 }
1975
1976 static int
1977 typhoon_stop_runtime(struct typhoon *tp, int wait_type)
1978 {
1979 struct typhoon_indexes *indexes = tp->indexes;
1980 struct transmit_ring *txLo = &tp->txLoRing;
1981 unsigned long ioaddr = tp->ioaddr;
1982 struct cmd_desc xp_cmd;
1983 int i;
1984
1985 /* Disable interrupts early, since we can't schedule a poll
1986 * when called with !netif_running(). This will be posted
1987 * when we force the posting of the command.
1988 */
1989 writel(TYPHOON_INTR_NONE, ioaddr + TYPHOON_REG_INTR_ENABLE);
1990
1991 INIT_COMMAND_NO_RESPONSE(&xp_cmd, TYPHOON_CMD_RX_DISABLE);
1992 typhoon_issue_command(tp, 1, &xp_cmd, 0, NULL);
1993
1994 /* Wait 1/2 sec for any outstanding transmits to occur
1995 * We'll cleanup after the reset if this times out.
1996 */
1997 for(i = 0; i < TYPHOON_WAIT_TIMEOUT; i++) {
1998 if(indexes->txLoCleared == cpu_to_le32(txLo->lastWrite))
1999 break;
2000 udelay(TYPHOON_UDELAY);
2001 }
2002
2003 if(i == TYPHOON_WAIT_TIMEOUT)
2004 printk(KERN_ERR
2005 "%s: halt timed out waiting for Tx to complete\n",
2006 tp->name);
2007
2008 INIT_COMMAND_NO_RESPONSE(&xp_cmd, TYPHOON_CMD_TX_DISABLE);
2009 typhoon_issue_command(tp, 1, &xp_cmd, 0, NULL);
2010
2011 /* save the statistics so when we bring the interface up again,
2012 * the values reported to userspace are correct.
2013 */
2014 tp->card_state = Sleeping;
2015 smp_wmb();
2016 typhoon_do_get_stats(tp);
2017 memcpy(&tp->stats_saved, &tp->stats, sizeof(struct net_device_stats));
2018
2019 INIT_COMMAND_NO_RESPONSE(&xp_cmd, TYPHOON_CMD_HALT);
2020 typhoon_issue_command(tp, 1, &xp_cmd, 0, NULL);
2021
2022 if(typhoon_wait_status(ioaddr, TYPHOON_STATUS_HALTED) < 0)
2023 printk(KERN_ERR "%s: timed out waiting for 3XP to halt\n",
2024 tp->name);
2025
2026 if(typhoon_reset(ioaddr, wait_type) < 0) {
2027 printk(KERN_ERR "%s: unable to reset 3XP\n", tp->name);
2028 return -ETIMEDOUT;
2029 }
2030
2031 /* cleanup any outstanding Tx packets */
2032 if(indexes->txLoCleared != cpu_to_le32(txLo->lastWrite)) {
2033 indexes->txLoCleared = cpu_to_le32(txLo->lastWrite);
2034 typhoon_clean_tx(tp, &tp->txLoRing, &indexes->txLoCleared);
2035 }
2036
2037 return 0;
2038 }
2039
2040 static void
2041 typhoon_tx_timeout(struct net_device *dev)
2042 {
2043 struct typhoon *tp = (struct typhoon *) dev->priv;
2044
2045 if(typhoon_reset(dev->base_addr, WaitNoSleep) < 0) {
2046 printk(KERN_WARNING "%s: could not reset in tx timeout\n",
2047 dev->name);
2048 goto truely_dead;
2049 }
2050
2051 /* If we ever start using the Hi ring, it will need cleaning too */
2052 typhoon_clean_tx(tp, &tp->txLoRing, &tp->indexes->txLoCleared);
2053 typhoon_free_rx_rings(tp);
2054
2055 if(typhoon_start_runtime(tp) < 0) {
2056 printk(KERN_ERR "%s: could not start runtime in tx timeout\n",
2057 dev->name);
2058 goto truely_dead;
2059 }
2060
2061 netif_wake_queue(dev);
2062 return;
2063
2064 truely_dead:
2065 /* Reset the hardware, and turn off carrier to avoid more timeouts */
2066 typhoon_reset(dev->base_addr, NoWait);
2067 netif_carrier_off(dev);
2068 }
2069
2070 static int
2071 typhoon_open(struct net_device *dev)
2072 {
2073 struct typhoon *tp = (struct typhoon *) dev->priv;
2074 int err;
2075
2076 err = typhoon_wakeup(tp, WaitSleep);
2077 if(err < 0) {
2078 printk(KERN_ERR "%s: unable to wakeup device\n", dev->name);
2079 goto out_sleep;
2080 }
2081
2082 err = request_irq(dev->irq, &typhoon_interrupt, SA_SHIRQ,
2083 dev->name, dev);
2084 if(err < 0)
2085 goto out_sleep;
2086
2087 err = typhoon_start_runtime(tp);
2088 if(err < 0)
2089 goto out_irq;
2090
2091 netif_start_queue(dev);
2092 return 0;
2093
2094 out_irq:
2095 free_irq(dev->irq, dev);
2096
2097 out_sleep:
2098 if(typhoon_boot_3XP(tp, TYPHOON_STATUS_WAITING_FOR_HOST) < 0) {
2099 printk(KERN_ERR "%s: unable to reboot into sleep img\n",
2100 dev->name);
2101 typhoon_reset(dev->base_addr, NoWait);
2102 goto out;
2103 }
2104
2105 if(typhoon_sleep(tp, 3, 0) < 0)
2106 printk(KERN_ERR "%s: unable to go back to sleep\n", dev->name);
2107
2108 out:
2109 return err;
2110 }
2111
2112 static int
2113 typhoon_close(struct net_device *dev)
2114 {
2115 struct typhoon *tp = (struct typhoon *) dev->priv;
2116
2117 netif_stop_queue(dev);
2118
2119 if(typhoon_stop_runtime(tp, WaitSleep) < 0)
2120 printk(KERN_ERR "%s: unable to stop runtime\n", dev->name);
2121
2122 /* Make sure there is no irq handler running on a different CPU. */
2123 typhoon_synchronize_irq(dev->irq);
2124 free_irq(dev->irq, dev);
2125
2126 typhoon_free_rx_rings(tp);
2127 typhoon_init_rings(tp);
2128
2129 if(typhoon_boot_3XP(tp, TYPHOON_STATUS_WAITING_FOR_HOST) < 0)
2130 printk(KERN_ERR "%s: unable to boot sleep image\n", dev->name);
2131
2132 if(typhoon_sleep(tp, 3, 0) < 0)
2133 printk(KERN_ERR "%s: unable to put card to sleep\n", dev->name);
2134
2135 return 0;
2136 }
2137
2138 #ifdef CONFIG_PM
2139 static int
2140 typhoon_resume(struct pci_dev *pdev)
2141 {
2142 struct net_device *dev = pci_get_drvdata(pdev);
2143 struct typhoon *tp = (struct typhoon *) dev->priv;
2144
2145 /* If we're down, resume when we are upped.
2146 */
2147 if(!netif_running(dev))
2148 return 0;
2149
2150 if(typhoon_wakeup(tp, WaitNoSleep) < 0) {
2151 printk(KERN_ERR "%s: critical: could not wake up in resume\n",
2152 dev->name);
2153 goto reset;
2154 }
2155
2156 if(typhoon_start_runtime(tp) < 0) {
2157 printk(KERN_ERR "%s: critical: could not start runtime in "
2158 "resume\n", dev->name);
2159 goto reset;
2160 }
2161
2162 netif_device_attach(dev);
2163 netif_start_queue(dev);
2164 return 0;
2165
2166 reset:
2167 typhoon_reset(dev->base_addr, NoWait);
2168 return -EBUSY;
2169 }
2170
2171 static int
2172 typhoon_suspend(struct pci_dev *pdev, u32 state)
2173 {
2174 struct net_device *dev = pci_get_drvdata(pdev);
2175 struct typhoon *tp = (struct typhoon *) dev->priv;
2176 struct cmd_desc xp_cmd;
2177
2178 /* If we're down, we're already suspended.
2179 */
2180 if(!netif_running(dev))
2181 return 0;
2182
2183 spin_lock_bh(&tp->state_lock);
2184 if(tp->vlgrp && tp->wol_events & TYPHOON_WAKE_MAGIC_PKT) {
2185 spin_unlock_bh(&tp->state_lock);
2186 printk(KERN_ERR "%s: cannot do WAKE_MAGIC with VLANS\n",
2187 dev->name);
2188 return -EBUSY;
2189 }
2190 spin_unlock_bh(&tp->state_lock);
2191
2192 netif_device_detach(dev);
2193
2194 if(typhoon_stop_runtime(tp, WaitNoSleep) < 0) {
2195 printk(KERN_ERR "%s: unable to stop runtime\n", dev->name);
2196 goto need_resume;
2197 }
2198
2199 typhoon_free_rx_rings(tp);
2200 typhoon_init_rings(tp);
2201
2202 if(typhoon_boot_3XP(tp, TYPHOON_STATUS_WAITING_FOR_HOST) < 0) {
2203 printk(KERN_ERR "%s: unable to boot sleep image\n", dev->name);
2204 goto need_resume;
2205 }
2206
2207 INIT_COMMAND_NO_RESPONSE(&xp_cmd, TYPHOON_CMD_SET_MAC_ADDRESS);
2208 xp_cmd.parm1 = cpu_to_le16(ntohs(*(u16 *)&dev->dev_addr[0]));
2209 xp_cmd.parm2 = cpu_to_le32(ntohl(*(u32 *)&dev->dev_addr[2]));
2210 if(typhoon_issue_command(tp, 1, &xp_cmd, 0, NULL) < 0) {
2211 printk(KERN_ERR "%s: unable to set mac address in suspend\n",
2212 dev->name);
2213 goto need_resume;
2214 }
2215
2216 INIT_COMMAND_NO_RESPONSE(&xp_cmd, TYPHOON_CMD_SET_RX_FILTER);
2217 xp_cmd.parm1 = TYPHOON_RX_FILTER_DIRECTED | TYPHOON_RX_FILTER_BROADCAST;
2218 if(typhoon_issue_command(tp, 1, &xp_cmd, 0, NULL) < 0) {
2219 printk(KERN_ERR "%s: unable to set rx filter in suspend\n",
2220 dev->name);
2221 goto need_resume;
2222 }
2223
2224 if(typhoon_sleep(tp, state, tp->wol_events) < 0) {
2225 printk(KERN_ERR "%s: unable to put card to sleep\n", dev->name);
2226 goto need_resume;
2227 }
2228
2229 return 0;
2230
2231 need_resume:
2232 typhoon_resume(pdev);
2233 return -EBUSY;
2234 }
2235
2236 static int
2237 typhoon_enable_wake(struct pci_dev *pdev, u32 state, int enable)
2238 {
2239 return pci_enable_wake(pdev, state, enable);
2240 }
2241 #endif
2242
2243 static int __devinit
2244 typhoon_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
2245 {
2246 static int did_version = 0;
2247 struct net_device *dev;
2248 struct typhoon *tp;
2249 int card_id = (int) ent->driver_data;
2250 unsigned long ioaddr;
2251 void *shared;
2252 dma_addr_t shared_dma;
2253 struct cmd_desc xp_cmd;
2254 struct resp_desc xp_resp;
2255 int i;
2256 int err = 0;
2257
2258 if(!did_version++)
2259 printk(KERN_INFO "%s", version);
2260
2261 dev = alloc_etherdev(sizeof(*tp));
2262 if(dev == NULL) {
2263 printk(ERR_PFX "%s: unable to alloc new net device\n",
2264 pdev->slot_name);
2265 err = -ENOMEM;
2266 goto error_out;
2267 }
2268 SET_MODULE_OWNER(dev);
2269 SET_NETDEV_DEV(dev, &pdev->dev);
2270
2271 err = pci_enable_device(pdev);
2272 if(err < 0) {
2273 printk(ERR_PFX "%s: unable to enable device\n",
2274 pdev->slot_name);
2275 goto error_out_dev;
2276 }
2277
2278 /* If we transitioned from D3->D0 in pci_enable_device(),
2279 * we lost our configuration and need to restore it to the
2280 * conditions at boot.
2281 */
2282 pci_restore_state(pdev, NULL);
2283
2284 err = pci_set_dma_mask(pdev, 0xffffffffULL);
2285 if(err < 0) {
2286 printk(ERR_PFX "%s: No usable DMA configuration\n",
2287 pdev->slot_name);
2288 goto error_out_dev;
2289 }
2290
2291 /* sanity checks, resource #1 is our mmio area
2292 */
2293 if(!(pci_resource_flags(pdev, 1) & IORESOURCE_MEM)) {
2294 printk(ERR_PFX
2295 "%s: region #1 not a PCI MMIO resource, aborting\n",
2296 pdev->slot_name);
2297 err = -ENODEV;
2298 goto error_out_dev;
2299 }
2300 if(pci_resource_len(pdev, 1) < 128) {
2301 printk(ERR_PFX "%s: Invalid PCI MMIO region size, aborting\n",
2302 pdev->slot_name);
2303 err = -ENODEV;
2304 goto error_out_dev;
2305 }
2306
2307 err = pci_request_regions(pdev, "typhoon");
2308 if(err < 0) {
2309 printk(ERR_PFX "%s: could not request regions\n",
2310 pdev->slot_name);
2311 goto error_out_dev;
2312 }
2313
2314 pci_set_master(pdev);
2315 pci_set_mwi(pdev);
2316
2317 /* map our MMIO region
2318 */
2319 ioaddr = pci_resource_start(pdev, 1);
2320 ioaddr = (unsigned long) ioremap(ioaddr, 128);
2321 if(!ioaddr) {
2322 printk(ERR_PFX "%s: cannot remap MMIO, aborting\n",
2323 pdev->slot_name);
2324 err = -EIO;
2325 goto error_out_regions;
2326 }
2327 dev->base_addr = ioaddr;
2328
2329 /* allocate pci dma space for rx and tx descriptor rings
2330 */
2331 shared = pci_alloc_consistent(pdev, sizeof(struct typhoon_shared),
2332 &shared_dma);
2333 if(!shared) {
2334 printk(ERR_PFX "%s: could not allocate DMA memory\n",
2335 pdev->slot_name);
2336 err = -ENOMEM;
2337 goto error_out_remap;
2338 }
2339
2340 dev->irq = pdev->irq;
2341 tp = dev->priv;
2342 tp->shared = (struct typhoon_shared *) shared;
2343 tp->shared_dma = shared_dma;
2344 tp->pdev = pdev;
2345 tp->tx_pdev = pdev;
2346 tp->ioaddr = dev->base_addr;
2347 tp->tx_ioaddr = dev->base_addr;
2348 tp->dev = dev;
2349
2350 /* need to be able to restore PCI state after a suspend */
2351 pci_save_state(pdev, tp->pci_state);
2352
2353 /* Init sequence:
2354 * 1) Reset the adapter to clear any bad juju
2355 * 2) Reload the sleep image
2356 * 3) Boot the sleep image
2357 * 4) Get the hardware address.
2358 * 5) Put the card to sleep.
2359 */
2360 if(typhoon_reset(ioaddr, WaitSleep) < 0) {
2361 printk(ERR_PFX "%s: could not reset 3XP\n", pdev->slot_name);
2362 err = -EIO;
2363 goto error_out_dma;
2364 }
2365
2366 /* dev->name is not valid until we register, but we need to
2367 * use some common routines to initialize the card. So that those
2368 * routines print the right name, we keep our oun pointer to the name
2369 */
2370 tp->name = pdev->slot_name;
2371
2372 typhoon_init_interface(tp);
2373 typhoon_init_rings(tp);
2374
2375 if(typhoon_boot_3XP(tp, TYPHOON_STATUS_WAITING_FOR_HOST) < 0) {
2376 printk(ERR_PFX "%s: cannot boot 3XP sleep image\n",
2377 pdev->slot_name);
2378 err = -EIO;
2379 goto error_out_reset;
2380 }
2381
2382 INIT_COMMAND_WITH_RESPONSE(&xp_cmd, TYPHOON_CMD_READ_MAC_ADDRESS);
2383 if(typhoon_issue_command(tp, 1, &xp_cmd, 1, &xp_resp) < 0) {
2384 printk(ERR_PFX "%s: cannot read MAC address\n",
2385 pdev->slot_name);
2386 err = -EIO;
2387 goto error_out_reset;
2388 }
2389
2390 *(u16 *)&dev->dev_addr[0] = htons(le16_to_cpu(xp_resp.parm1));
2391 *(u32 *)&dev->dev_addr[2] = htonl(le32_to_cpu(xp_resp.parm2));
2392
2393 if(!is_valid_ether_addr(dev->dev_addr)) {
2394 printk(ERR_PFX "%s: Could not obtain valid ethernet address, "
2395 "aborting\n", pdev->slot_name);
2396 goto error_out_reset;
2397 }
2398
2399 if(typhoon_sleep(tp, 3, 0) < 0) {
2400 printk(ERR_PFX "%s: cannot put adapter to sleep\n",
2401 pdev->slot_name);
2402 err = -EIO;
2403 goto error_out_reset;
2404 }
2405
2406 tp->capabilities = typhoon_card_info[card_id].capabilities;
2407 tp->xcvr_select = TYPHOON_XCVR_AUTONEG;
2408
2409 /* The chip-specific entries in the device structure. */
2410 dev->open = typhoon_open;
2411 dev->hard_start_xmit = typhoon_start_tx;
2412 dev->stop = typhoon_close;
2413 dev->set_multicast_list = typhoon_set_rx_mode;
2414 dev->tx_timeout = typhoon_tx_timeout;
2415 dev->poll = typhoon_poll;
2416 dev->weight = 16;
2417 dev->watchdog_timeo = TX_TIMEOUT;
2418 dev->get_stats = typhoon_get_stats;
2419 dev->set_mac_address = typhoon_set_mac_address;
2420 dev->do_ioctl = typhoon_ioctl;
2421 dev->vlan_rx_register = typhoon_vlan_rx_register;
2422 dev->vlan_rx_kill_vid = typhoon_vlan_rx_kill_vid;
2423
2424 /* We can handle scatter gather, up to 16 entries, and
2425 * we can do IP checksumming (only version 4, doh...)
2426 */
2427 dev->features |= NETIF_F_SG | NETIF_F_IP_CSUM;
2428 dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
2429 dev->features |= NETIF_F_TSO;
2430
2431 if(register_netdev(dev) < 0)
2432 goto error_out_reset;
2433
2434 /* fixup our local name */
2435 tp->name = dev->name;
2436
2437 pci_set_drvdata(pdev, dev);
2438
2439 printk(KERN_INFO "%s: %s at 0x%lx, ",
2440 dev->name, typhoon_card_info[card_id].name, ioaddr);
2441 for(i = 0; i < 5; i++)
2442 printk("%2.2x:", dev->dev_addr[i]);
2443 printk("%2.2x\n", dev->dev_addr[i]);
2444
2445 return 0;
2446
2447 error_out_reset:
2448 typhoon_reset(ioaddr, NoWait);
2449
2450 error_out_dma:
2451 pci_free_consistent(pdev, sizeof(struct typhoon_shared),
2452 shared, shared_dma);
2453 error_out_remap:
2454 iounmap((void *) ioaddr);
2455 error_out_regions:
2456 pci_release_regions(pdev);
2457 error_out_dev:
2458 kfree(dev);
2459 error_out:
2460 return err;
2461 }
2462
2463 static void __devexit
2464 typhoon_remove_one(struct pci_dev *pdev)
2465 {
2466 struct net_device *dev = pci_get_drvdata(pdev);
2467 struct typhoon *tp = (struct typhoon *) (dev->priv);
2468
2469 unregister_netdev(dev);
2470 pci_set_power_state(pdev, 0);
2471 pci_restore_state(pdev, tp->pci_state);
2472 typhoon_reset(dev->base_addr, NoWait);
2473 iounmap((char *) (dev->base_addr));
2474 pci_free_consistent(pdev, sizeof(struct typhoon_shared),
2475 tp->shared, tp->shared_dma);
2476 pci_release_regions(pdev);
2477 pci_disable_device(pdev);
2478 pci_set_drvdata(pdev, NULL);
2479 kfree(dev);
2480 }
2481
2482 static struct pci_driver typhoon_driver = {
2483 .name = DRV_MODULE_NAME,
2484 .id_table = typhoon_pci_tbl,
2485 .probe = typhoon_init_one,
2486 .remove = __devexit_p(typhoon_remove_one),
2487 #ifdef CONFIG_PM
2488 .suspend = typhoon_suspend,
2489 .resume = typhoon_resume,
2490 .enable_wake = typhoon_enable_wake,
2491 #endif
2492 };
2493
2494 static int __init
2495 typhoon_init(void)
2496 {
2497 return pci_module_init(&typhoon_driver);
2498 }
2499
2500 static void __exit
2501 typhoon_cleanup(void)
2502 {
2503 pci_unregister_driver(&typhoon_driver);
2504 }
2505
2506 module_init(typhoon_init);
2507 module_exit(typhoon_cleanup);
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