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Merge branch 'for-linus' of git://git.infradead.org/users/sameo/mfd-2.6
[linux-btrfs-devel.git] / drivers / net / typhoon.c
blob1d5091a1e49a441c383a140432290cc351ecd29f
1 /* typhoon.c: A Linux Ethernet device driver for 3Com 3CR990 family of NICs */
2 /*
3 Written 2002-2004 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 *) Cannot DMA Rx packets to a 2 byte aligned address. Also firmware
28 issue. Hopefully 3Com will fix it.
29 *) Waiting for a command response takes 8ms due to non-preemptable
30 polling. Only significant for getting stats and creating
31 SAs, but an ugly wart never the less.
32
33 TODO:
34 *) Doesn't do IPSEC offloading. Yet. Keep yer pants on, it's coming.
35 *) Add more support for ethtool (especially for NIC stats)
36 *) Allow disabling of RX checksum offloading
37 *) Fix MAC changing to work while the interface is up
38 (Need to put commands on the TX ring, which changes
39 the locking)
40 *) Add in FCS to {rx,tx}_bytes, since the hardware doesn't. See
41 http://oss.sgi.com/cgi-bin/mesg.cgi?a=netdev&i=20031215152211.7003fe8e.rddunlap%40osdl.org
42 */
43
44 /* Set the copy breakpoint for the copy-only-tiny-frames scheme.
45 * Setting to > 1518 effectively disables this feature.
46 */
47 static int rx_copybreak = 200;
48
49 /* Should we use MMIO or Port IO?
50 * 0: Port IO
51 * 1: MMIO
52 * 2: Try MMIO, fallback to Port IO
53 */
54 static unsigned int use_mmio = 2;
55
56 /* end user-configurable values */
57
58 /* Maximum number of multicast addresses to filter (vs. rx-all-multicast).
59 */
60 static const int multicast_filter_limit = 32;
61
62 /* Operational parameters that are set at compile time. */
63
64 /* Keep the ring sizes a power of two for compile efficiency.
65 * The compiler will convert <unsigned>'%'<2^N> into a bit mask.
66 * Making the Tx ring too large decreases the effectiveness of channel
67 * bonding and packet priority.
68 * There are no ill effects from too-large receive rings.
69 *
70 * We don't currently use the Hi Tx ring so, don't make it very big.
71 *
72 * Beware that if we start using the Hi Tx ring, we will need to change
73 * typhoon_num_free_tx() and typhoon_tx_complete() to account for that.
74 */
75 #define TXHI_ENTRIES 2
76 #define TXLO_ENTRIES 128
77 #define RX_ENTRIES 32
78 #define COMMAND_ENTRIES 16
79 #define RESPONSE_ENTRIES 32
80
81 #define COMMAND_RING_SIZE (COMMAND_ENTRIES * sizeof(struct cmd_desc))
82 #define RESPONSE_RING_SIZE (RESPONSE_ENTRIES * sizeof(struct resp_desc))
83
84 /* The 3XP will preload and remove 64 entries from the free buffer
85 * list, and we need one entry to keep the ring from wrapping, so
86 * to keep this a power of two, we use 128 entries.
87 */
88 #define RXFREE_ENTRIES 128
89 #define RXENT_ENTRIES (RXFREE_ENTRIES - 1)
90
91 /* Operational parameters that usually are not changed. */
92
93 /* Time in jiffies before concluding the transmitter is hung. */
94 #define TX_TIMEOUT (2*HZ)
95
96 #define PKT_BUF_SZ 1536
97 #define FIRMWARE_NAME "3com/typhoon.bin"
98
99 #define pr_fmt(fmt) KBUILD_MODNAME " " fmt
100
101 #include <linux/module.h>
102 #include <linux/kernel.h>
103 #include <linux/sched.h>
104 #include <linux/string.h>
105 #include <linux/timer.h>
106 #include <linux/errno.h>
107 #include <linux/ioport.h>
108 #include <linux/interrupt.h>
109 #include <linux/pci.h>
110 #include <linux/netdevice.h>
111 #include <linux/etherdevice.h>
112 #include <linux/skbuff.h>
113 #include <linux/mm.h>
114 #include <linux/init.h>
115 #include <linux/delay.h>
116 #include <linux/ethtool.h>
117 #include <linux/if_vlan.h>
118 #include <linux/crc32.h>
119 #include <linux/bitops.h>
120 #include <asm/processor.h>
121 #include <asm/io.h>
122 #include <asm/uaccess.h>
123 #include <linux/in6.h>
124 #include <linux/dma-mapping.h>
125 #include <linux/firmware.h>
126
127 #include "typhoon.h"
128
129 MODULE_AUTHOR("David Dillow <dave@thedillows.org>");
130 MODULE_VERSION("1.0");
131 MODULE_LICENSE("GPL");
132 MODULE_FIRMWARE(FIRMWARE_NAME);
133 MODULE_DESCRIPTION("3Com Typhoon Family (3C990, 3CR990, and variants)");
134 MODULE_PARM_DESC(rx_copybreak, "Packets smaller than this are copied and "
135 "the buffer given back to the NIC. Default "
136 "is 200.");
137 MODULE_PARM_DESC(use_mmio, "Use MMIO (1) or PIO(0) to access the NIC. "
138 "Default is to try MMIO and fallback to PIO.");
139 module_param(rx_copybreak, int, 0);
140 module_param(use_mmio, int, 0);
141
142 #if defined(NETIF_F_TSO) && MAX_SKB_FRAGS > 32
143 #warning Typhoon only supports 32 entries in its SG list for TSO, disabling TSO
144 #undef NETIF_F_TSO
145 #endif
146
147 #if TXLO_ENTRIES <= (2 * MAX_SKB_FRAGS)
148 #error TX ring too small!
149 #endif
150
151 struct typhoon_card_info {
152 const char *name;
153 const int capabilities;
154 };
155
156 #define TYPHOON_CRYPTO_NONE 0x00
157 #define TYPHOON_CRYPTO_DES 0x01
158 #define TYPHOON_CRYPTO_3DES 0x02
159 #define TYPHOON_CRYPTO_VARIABLE 0x04
160 #define TYPHOON_FIBER 0x08
161 #define TYPHOON_WAKEUP_NEEDS_RESET 0x10
162
163 enum typhoon_cards {
164 TYPHOON_TX = 0, TYPHOON_TX95, TYPHOON_TX97, TYPHOON_SVR,
165 TYPHOON_SVR95, TYPHOON_SVR97, TYPHOON_TXM, TYPHOON_BSVR,
166 TYPHOON_FX95, TYPHOON_FX97, TYPHOON_FX95SVR, TYPHOON_FX97SVR,
167 TYPHOON_FXM,
168 };
169
170 /* directly indexed by enum typhoon_cards, above */
171 static struct typhoon_card_info typhoon_card_info[] __devinitdata = {
172 { "3Com Typhoon (3C990-TX)",
173 TYPHOON_CRYPTO_NONE},
174 { "3Com Typhoon (3CR990-TX-95)",
175 TYPHOON_CRYPTO_DES},
176 { "3Com Typhoon (3CR990-TX-97)",
177 TYPHOON_CRYPTO_DES | TYPHOON_CRYPTO_3DES},
178 { "3Com Typhoon (3C990SVR)",
179 TYPHOON_CRYPTO_NONE},
180 { "3Com Typhoon (3CR990SVR95)",
181 TYPHOON_CRYPTO_DES},
182 { "3Com Typhoon (3CR990SVR97)",
183 TYPHOON_CRYPTO_DES | TYPHOON_CRYPTO_3DES},
184 { "3Com Typhoon2 (3C990B-TX-M)",
185 TYPHOON_CRYPTO_VARIABLE},
186 { "3Com Typhoon2 (3C990BSVR)",
187 TYPHOON_CRYPTO_VARIABLE},
188 { "3Com Typhoon (3CR990-FX-95)",
189 TYPHOON_CRYPTO_DES | TYPHOON_FIBER},
190 { "3Com Typhoon (3CR990-FX-97)",
191 TYPHOON_CRYPTO_DES | TYPHOON_CRYPTO_3DES | TYPHOON_FIBER},
192 { "3Com Typhoon (3CR990-FX-95 Server)",
193 TYPHOON_CRYPTO_DES | TYPHOON_FIBER},
194 { "3Com Typhoon (3CR990-FX-97 Server)",
195 TYPHOON_CRYPTO_DES | TYPHOON_CRYPTO_3DES | TYPHOON_FIBER},
196 { "3Com Typhoon2 (3C990B-FX-97)",
197 TYPHOON_CRYPTO_VARIABLE | TYPHOON_FIBER},
198 };
199
200 /* Notes on the new subsystem numbering scheme:
201 * bits 0-1 indicate crypto capabilities: (0) variable, (1) DES, or (2) 3DES
202 * bit 4 indicates if this card has secured firmware (we don't support it)
203 * bit 8 indicates if this is a (0) copper or (1) fiber card
204 * bits 12-16 indicate card type: (0) client and (1) server
205 */
206 static DEFINE_PCI_DEVICE_TABLE(typhoon_pci_tbl) = {
207 { PCI_VENDOR_ID_3COM, PCI_DEVICE_ID_3COM_3CR990,
208 PCI_ANY_ID, PCI_ANY_ID, 0, 0,TYPHOON_TX },
209 { PCI_VENDOR_ID_3COM, PCI_DEVICE_ID_3COM_3CR990_TX_95,
210 PCI_ANY_ID, PCI_ANY_ID, 0, 0, TYPHOON_TX95 },
211 { PCI_VENDOR_ID_3COM, PCI_DEVICE_ID_3COM_3CR990_TX_97,
212 PCI_ANY_ID, PCI_ANY_ID, 0, 0, TYPHOON_TX97 },
213 { PCI_VENDOR_ID_3COM, PCI_DEVICE_ID_3COM_3CR990B,
214 PCI_ANY_ID, 0x1000, 0, 0, TYPHOON_TXM },
215 { PCI_VENDOR_ID_3COM, PCI_DEVICE_ID_3COM_3CR990B,
216 PCI_ANY_ID, 0x1102, 0, 0, TYPHOON_FXM },
217 { PCI_VENDOR_ID_3COM, PCI_DEVICE_ID_3COM_3CR990B,
218 PCI_ANY_ID, 0x2000, 0, 0, TYPHOON_BSVR },
219 { PCI_VENDOR_ID_3COM, PCI_DEVICE_ID_3COM_3CR990_FX,
220 PCI_ANY_ID, 0x1101, 0, 0, TYPHOON_FX95 },
221 { PCI_VENDOR_ID_3COM, PCI_DEVICE_ID_3COM_3CR990_FX,
222 PCI_ANY_ID, 0x1102, 0, 0, TYPHOON_FX97 },
223 { PCI_VENDOR_ID_3COM, PCI_DEVICE_ID_3COM_3CR990_FX,
224 PCI_ANY_ID, 0x2101, 0, 0, TYPHOON_FX95SVR },
225 { PCI_VENDOR_ID_3COM, PCI_DEVICE_ID_3COM_3CR990_FX,
226 PCI_ANY_ID, 0x2102, 0, 0, TYPHOON_FX97SVR },
227 { PCI_VENDOR_ID_3COM, PCI_DEVICE_ID_3COM_3CR990SVR95,
228 PCI_ANY_ID, PCI_ANY_ID, 0, 0, TYPHOON_SVR95 },
229 { PCI_VENDOR_ID_3COM, PCI_DEVICE_ID_3COM_3CR990SVR97,
230 PCI_ANY_ID, PCI_ANY_ID, 0, 0, TYPHOON_SVR97 },
231 { PCI_VENDOR_ID_3COM, PCI_DEVICE_ID_3COM_3CR990SVR,
232 PCI_ANY_ID, PCI_ANY_ID, 0, 0, TYPHOON_SVR },
233 { 0, }
234 };
235 MODULE_DEVICE_TABLE(pci, typhoon_pci_tbl);
236
237 /* Define the shared memory area
238 * Align everything the 3XP will normally be using.
239 * We'll need to move/align txHi if we start using that ring.
240 */
241 #define __3xp_aligned ____cacheline_aligned
242 struct typhoon_shared {
243 struct typhoon_interface iface;
244 struct typhoon_indexes indexes __3xp_aligned;
245 struct tx_desc txLo[TXLO_ENTRIES] __3xp_aligned;
246 struct rx_desc rxLo[RX_ENTRIES] __3xp_aligned;
247 struct rx_desc rxHi[RX_ENTRIES] __3xp_aligned;
248 struct cmd_desc cmd[COMMAND_ENTRIES] __3xp_aligned;
249 struct resp_desc resp[RESPONSE_ENTRIES] __3xp_aligned;
250 struct rx_free rxBuff[RXFREE_ENTRIES] __3xp_aligned;
251 u32 zeroWord;
252 struct tx_desc txHi[TXHI_ENTRIES];
253 } __packed;
254
255 struct rxbuff_ent {
256 struct sk_buff *skb;
257 dma_addr_t dma_addr;
258 };
259
260 struct typhoon {
261 /* Tx cache line section */
262 struct transmit_ring txLoRing ____cacheline_aligned;
263 struct pci_dev * tx_pdev;
264 void __iomem *tx_ioaddr;
265 u32 txlo_dma_addr;
266
267 /* Irq/Rx cache line section */
268 void __iomem *ioaddr ____cacheline_aligned;
269 struct typhoon_indexes *indexes;
270 u8 awaiting_resp;
271 u8 duplex;
272 u8 speed;
273 u8 card_state;
274 struct basic_ring rxLoRing;
275 struct pci_dev * pdev;
276 struct net_device * dev;
277 struct napi_struct napi;
278 struct basic_ring rxHiRing;
279 struct basic_ring rxBuffRing;
280 struct rxbuff_ent rxbuffers[RXENT_ENTRIES];
281
282 /* general section */
283 spinlock_t command_lock ____cacheline_aligned;
284 struct basic_ring cmdRing;
285 struct basic_ring respRing;
286 struct net_device_stats stats;
287 struct net_device_stats stats_saved;
288 struct typhoon_shared * shared;
289 dma_addr_t shared_dma;
290 __le16 xcvr_select;
291 __le16 wol_events;
292 __le32 offload;
293
294 /* unused stuff (future use) */
295 int capabilities;
296 struct transmit_ring txHiRing;
297 };
298
299 enum completion_wait_values {
300 NoWait = 0, WaitNoSleep, WaitSleep,
301 };
302
303 /* These are the values for the typhoon.card_state variable.
304 * These determine where the statistics will come from in get_stats().
305 * The sleep image does not support the statistics we need.
306 */
307 enum state_values {
308 Sleeping = 0, Running,
309 };
310
311 /* PCI writes are not guaranteed to be posted in order, but outstanding writes
312 * cannot pass a read, so this forces current writes to post.
313 */
314 #define typhoon_post_pci_writes(x) \
315 do { if(likely(use_mmio)) ioread32(x+TYPHOON_REG_HEARTBEAT); } while(0)
316
317 /* We'll wait up to six seconds for a reset, and half a second normally.
318 */
319 #define TYPHOON_UDELAY 50
320 #define TYPHOON_RESET_TIMEOUT_SLEEP (6 * HZ)
321 #define TYPHOON_RESET_TIMEOUT_NOSLEEP ((6 * 1000000) / TYPHOON_UDELAY)
322 #define TYPHOON_WAIT_TIMEOUT ((1000000 / 2) / TYPHOON_UDELAY)
323
324 #if defined(NETIF_F_TSO)
325 #define skb_tso_size(x) (skb_shinfo(x)->gso_size)
326 #define TSO_NUM_DESCRIPTORS 2
327 #define TSO_OFFLOAD_ON TYPHOON_OFFLOAD_TCP_SEGMENT
328 #else
329 #define NETIF_F_TSO 0
330 #define skb_tso_size(x) 0
331 #define TSO_NUM_DESCRIPTORS 0
332 #define TSO_OFFLOAD_ON 0
333 #endif
334
335 static inline void
336 typhoon_inc_index(u32 *index, const int count, const int num_entries)
337 {
338 /* Increment a ring index -- we can use this for all rings execept
339 * the Rx rings, as they use different size descriptors
340 * otherwise, everything is the same size as a cmd_desc
341 */
342 *index += count * sizeof(struct cmd_desc);
343 *index %= num_entries * sizeof(struct cmd_desc);
344 }
345
346 static inline void
347 typhoon_inc_cmd_index(u32 *index, const int count)
348 {
349 typhoon_inc_index(index, count, COMMAND_ENTRIES);
350 }
351
352 static inline void
353 typhoon_inc_resp_index(u32 *index, const int count)
354 {
355 typhoon_inc_index(index, count, RESPONSE_ENTRIES);
356 }
357
358 static inline void
359 typhoon_inc_rxfree_index(u32 *index, const int count)
360 {
361 typhoon_inc_index(index, count, RXFREE_ENTRIES);
362 }
363
364 static inline void
365 typhoon_inc_tx_index(u32 *index, const int count)
366 {
367 /* if we start using the Hi Tx ring, this needs updateing */
368 typhoon_inc_index(index, count, TXLO_ENTRIES);
369 }
370
371 static inline void
372 typhoon_inc_rx_index(u32 *index, const int count)
373 {
374 /* sizeof(struct rx_desc) != sizeof(struct cmd_desc) */
375 *index += count * sizeof(struct rx_desc);
376 *index %= RX_ENTRIES * sizeof(struct rx_desc);
377 }
378
379 static int
380 typhoon_reset(void __iomem *ioaddr, int wait_type)
381 {
382 int i, err = 0;
383 int timeout;
384
385 if(wait_type == WaitNoSleep)
386 timeout = TYPHOON_RESET_TIMEOUT_NOSLEEP;
387 else
388 timeout = TYPHOON_RESET_TIMEOUT_SLEEP;
389
390 iowrite32(TYPHOON_INTR_ALL, ioaddr + TYPHOON_REG_INTR_MASK);
391 iowrite32(TYPHOON_INTR_ALL, ioaddr + TYPHOON_REG_INTR_STATUS);
392
393 iowrite32(TYPHOON_RESET_ALL, ioaddr + TYPHOON_REG_SOFT_RESET);
394 typhoon_post_pci_writes(ioaddr);
395 udelay(1);
396 iowrite32(TYPHOON_RESET_NONE, ioaddr + TYPHOON_REG_SOFT_RESET);
397
398 if(wait_type != NoWait) {
399 for(i = 0; i < timeout; i++) {
400 if(ioread32(ioaddr + TYPHOON_REG_STATUS) ==
401 TYPHOON_STATUS_WAITING_FOR_HOST)
402 goto out;
403
404 if(wait_type == WaitSleep)
405 schedule_timeout_uninterruptible(1);
406 else
407 udelay(TYPHOON_UDELAY);
408 }
409
410 err = -ETIMEDOUT;
411 }
412
413 out:
414 iowrite32(TYPHOON_INTR_ALL, ioaddr + TYPHOON_REG_INTR_MASK);
415 iowrite32(TYPHOON_INTR_ALL, ioaddr + TYPHOON_REG_INTR_STATUS);
416
417 /* The 3XP seems to need a little extra time to complete the load
418 * of the sleep image before we can reliably boot it. Failure to
419 * do this occasionally results in a hung adapter after boot in
420 * typhoon_init_one() while trying to read the MAC address or
421 * putting the card to sleep. 3Com's driver waits 5ms, but
422 * that seems to be overkill. However, if we can sleep, we might
423 * as well give it that much time. Otherwise, we'll give it 500us,
424 * which should be enough (I've see it work well at 100us, but still
425 * saw occasional problems.)
426 */
427 if(wait_type == WaitSleep)
428 msleep(5);
429 else
430 udelay(500);
431 return err;
432 }
433
434 static int
435 typhoon_wait_status(void __iomem *ioaddr, u32 wait_value)
436 {
437 int i, err = 0;
438
439 for(i = 0; i < TYPHOON_WAIT_TIMEOUT; i++) {
440 if(ioread32(ioaddr + TYPHOON_REG_STATUS) == wait_value)
441 goto out;
442 udelay(TYPHOON_UDELAY);
443 }
444
445 err = -ETIMEDOUT;
446
447 out:
448 return err;
449 }
450
451 static inline void
452 typhoon_media_status(struct net_device *dev, struct resp_desc *resp)
453 {
454 if(resp->parm1 & TYPHOON_MEDIA_STAT_NO_LINK)
455 netif_carrier_off(dev);
456 else
457 netif_carrier_on(dev);
458 }
459
460 static inline void
461 typhoon_hello(struct typhoon *tp)
462 {
463 struct basic_ring *ring = &tp->cmdRing;
464 struct cmd_desc *cmd;
465
466 /* We only get a hello request if we've not sent anything to the
467 * card in a long while. If the lock is held, then we're in the
468 * process of issuing a command, so we don't need to respond.
469 */
470 if(spin_trylock(&tp->command_lock)) {
471 cmd = (struct cmd_desc *)(ring->ringBase + ring->lastWrite);
472 typhoon_inc_cmd_index(&ring->lastWrite, 1);
473
474 INIT_COMMAND_NO_RESPONSE(cmd, TYPHOON_CMD_HELLO_RESP);
475 wmb();
476 iowrite32(ring->lastWrite, tp->ioaddr + TYPHOON_REG_CMD_READY);
477 spin_unlock(&tp->command_lock);
478 }
479 }
480
481 static int
482 typhoon_process_response(struct typhoon *tp, int resp_size,
483 struct resp_desc *resp_save)
484 {
485 struct typhoon_indexes *indexes = tp->indexes;
486 struct resp_desc *resp;
487 u8 *base = tp->respRing.ringBase;
488 int count, len, wrap_len;
489 u32 cleared;
490 u32 ready;
491
492 cleared = le32_to_cpu(indexes->respCleared);
493 ready = le32_to_cpu(indexes->respReady);
494 while(cleared != ready) {
495 resp = (struct resp_desc *)(base + cleared);
496 count = resp->numDesc + 1;
497 if(resp_save && resp->seqNo) {
498 if(count > resp_size) {
499 resp_save->flags = TYPHOON_RESP_ERROR;
500 goto cleanup;
501 }
502
503 wrap_len = 0;
504 len = count * sizeof(*resp);
505 if(unlikely(cleared + len > RESPONSE_RING_SIZE)) {
506 wrap_len = cleared + len - RESPONSE_RING_SIZE;
507 len = RESPONSE_RING_SIZE - cleared;
508 }
509
510 memcpy(resp_save, resp, len);
511 if(unlikely(wrap_len)) {
512 resp_save += len / sizeof(*resp);
513 memcpy(resp_save, base, wrap_len);
514 }
515
516 resp_save = NULL;
517 } else if(resp->cmd == TYPHOON_CMD_READ_MEDIA_STATUS) {
518 typhoon_media_status(tp->dev, resp);
519 } else if(resp->cmd == TYPHOON_CMD_HELLO_RESP) {
520 typhoon_hello(tp);
521 } else {
522 netdev_err(tp->dev,
523 "dumping unexpected response 0x%04x:%d:0x%02x:0x%04x:%08x:%08x\n",
524 le16_to_cpu(resp->cmd),
525 resp->numDesc, resp->flags,
526 le16_to_cpu(resp->parm1),
527 le32_to_cpu(resp->parm2),
528 le32_to_cpu(resp->parm3));
529 }
530
531 cleanup:
532 typhoon_inc_resp_index(&cleared, count);
533 }
534
535 indexes->respCleared = cpu_to_le32(cleared);
536 wmb();
537 return resp_save == NULL;
538 }
539
540 static inline int
541 typhoon_num_free(int lastWrite, int lastRead, int ringSize)
542 {
543 /* this works for all descriptors but rx_desc, as they are a
544 * different size than the cmd_desc -- everyone else is the same
545 */
546 lastWrite /= sizeof(struct cmd_desc);
547 lastRead /= sizeof(struct cmd_desc);
548 return (ringSize + lastRead - lastWrite - 1) % ringSize;
549 }
550
551 static inline int
552 typhoon_num_free_cmd(struct typhoon *tp)
553 {
554 int lastWrite = tp->cmdRing.lastWrite;
555 int cmdCleared = le32_to_cpu(tp->indexes->cmdCleared);
556
557 return typhoon_num_free(lastWrite, cmdCleared, COMMAND_ENTRIES);
558 }
559
560 static inline int
561 typhoon_num_free_resp(struct typhoon *tp)
562 {
563 int respReady = le32_to_cpu(tp->indexes->respReady);
564 int respCleared = le32_to_cpu(tp->indexes->respCleared);
565
566 return typhoon_num_free(respReady, respCleared, RESPONSE_ENTRIES);
567 }
568
569 static inline int
570 typhoon_num_free_tx(struct transmit_ring *ring)
571 {
572 /* if we start using the Hi Tx ring, this needs updating */
573 return typhoon_num_free(ring->lastWrite, ring->lastRead, TXLO_ENTRIES);
574 }
575
576 static int
577 typhoon_issue_command(struct typhoon *tp, int num_cmd, struct cmd_desc *cmd,
578 int num_resp, struct resp_desc *resp)
579 {
580 struct typhoon_indexes *indexes = tp->indexes;
581 struct basic_ring *ring = &tp->cmdRing;
582 struct resp_desc local_resp;
583 int i, err = 0;
584 int got_resp;
585 int freeCmd, freeResp;
586 int len, wrap_len;
587
588 spin_lock(&tp->command_lock);
589
590 freeCmd = typhoon_num_free_cmd(tp);
591 freeResp = typhoon_num_free_resp(tp);
592
593 if(freeCmd < num_cmd || freeResp < num_resp) {
594 netdev_err(tp->dev, "no descs for cmd, had (needed) %d (%d) cmd, %d (%d) resp\n",
595 freeCmd, num_cmd, freeResp, num_resp);
596 err = -ENOMEM;
597 goto out;
598 }
599
600 if(cmd->flags & TYPHOON_CMD_RESPOND) {
601 /* If we're expecting a response, but the caller hasn't given
602 * us a place to put it, we'll provide one.
603 */
604 tp->awaiting_resp = 1;
605 if(resp == NULL) {
606 resp = &local_resp;
607 num_resp = 1;
608 }
609 }
610
611 wrap_len = 0;
612 len = num_cmd * sizeof(*cmd);
613 if(unlikely(ring->lastWrite + len > COMMAND_RING_SIZE)) {
614 wrap_len = ring->lastWrite + len - COMMAND_RING_SIZE;
615 len = COMMAND_RING_SIZE - ring->lastWrite;
616 }
617
618 memcpy(ring->ringBase + ring->lastWrite, cmd, len);
619 if(unlikely(wrap_len)) {
620 struct cmd_desc *wrap_ptr = cmd;
621 wrap_ptr += len / sizeof(*cmd);
622 memcpy(ring->ringBase, wrap_ptr, wrap_len);
623 }
624
625 typhoon_inc_cmd_index(&ring->lastWrite, num_cmd);
626
627 /* "I feel a presence... another warrior is on the mesa."
628 */
629 wmb();
630 iowrite32(ring->lastWrite, tp->ioaddr + TYPHOON_REG_CMD_READY);
631 typhoon_post_pci_writes(tp->ioaddr);
632
633 if((cmd->flags & TYPHOON_CMD_RESPOND) == 0)
634 goto out;
635
636 /* Ugh. We'll be here about 8ms, spinning our thumbs, unable to
637 * preempt or do anything other than take interrupts. So, don't
638 * wait for a response unless you have to.
639 *
640 * I've thought about trying to sleep here, but we're called
641 * from many contexts that don't allow that. Also, given the way
642 * 3Com has implemented irq coalescing, we would likely timeout --
643 * this has been observed in real life!
644 *
645 * The big killer is we have to wait to get stats from the card,
646 * though we could go to a periodic refresh of those if we don't
647 * mind them getting somewhat stale. The rest of the waiting
648 * commands occur during open/close/suspend/resume, so they aren't
649 * time critical. Creating SAs in the future will also have to
650 * wait here.
651 */
652 got_resp = 0;
653 for(i = 0; i < TYPHOON_WAIT_TIMEOUT && !got_resp; i++) {
654 if(indexes->respCleared != indexes->respReady)
655 got_resp = typhoon_process_response(tp, num_resp,
656 resp);
657 udelay(TYPHOON_UDELAY);
658 }
659
660 if(!got_resp) {
661 err = -ETIMEDOUT;
662 goto out;
663 }
664
665 /* Collect the error response even if we don't care about the
666 * rest of the response
667 */
668 if(resp->flags & TYPHOON_RESP_ERROR)
669 err = -EIO;
670
671 out:
672 if(tp->awaiting_resp) {
673 tp->awaiting_resp = 0;
674 smp_wmb();
675
676 /* Ugh. If a response was added to the ring between
677 * the call to typhoon_process_response() and the clearing
678 * of tp->awaiting_resp, we could have missed the interrupt
679 * and it could hang in the ring an indeterminate amount of
680 * time. So, check for it, and interrupt ourselves if this
681 * is the case.
682 */
683 if(indexes->respCleared != indexes->respReady)
684 iowrite32(1, tp->ioaddr + TYPHOON_REG_SELF_INTERRUPT);
685 }
686
687 spin_unlock(&tp->command_lock);
688 return err;
689 }
690
691 static inline void
692 typhoon_tso_fill(struct sk_buff *skb, struct transmit_ring *txRing,
693 u32 ring_dma)
694 {
695 struct tcpopt_desc *tcpd;
696 u32 tcpd_offset = ring_dma;
697
698 tcpd = (struct tcpopt_desc *) (txRing->ringBase + txRing->lastWrite);
699 tcpd_offset += txRing->lastWrite;
700 tcpd_offset += offsetof(struct tcpopt_desc, bytesTx);
701 typhoon_inc_tx_index(&txRing->lastWrite, 1);
702
703 tcpd->flags = TYPHOON_OPT_DESC | TYPHOON_OPT_TCP_SEG;
704 tcpd->numDesc = 1;
705 tcpd->mss_flags = cpu_to_le16(skb_tso_size(skb));
706 tcpd->mss_flags |= TYPHOON_TSO_FIRST | TYPHOON_TSO_LAST;
707 tcpd->respAddrLo = cpu_to_le32(tcpd_offset);
708 tcpd->bytesTx = cpu_to_le32(skb->len);
709 tcpd->status = 0;
710 }
711
712 static netdev_tx_t
713 typhoon_start_tx(struct sk_buff *skb, struct net_device *dev)
714 {
715 struct typhoon *tp = netdev_priv(dev);
716 struct transmit_ring *txRing;
717 struct tx_desc *txd, *first_txd;
718 dma_addr_t skb_dma;
719 int numDesc;
720
721 /* we have two rings to choose from, but we only use txLo for now
722 * If we start using the Hi ring as well, we'll need to update
723 * typhoon_stop_runtime(), typhoon_interrupt(), typhoon_num_free_tx(),
724 * and TXHI_ENTRIES to match, as well as update the TSO code below
725 * to get the right DMA address
726 */
727 txRing = &tp->txLoRing;
728
729 /* We need one descriptor for each fragment of the sk_buff, plus the
730 * one for the ->data area of it.
731 *
732 * The docs say a maximum of 16 fragment descriptors per TCP option
733 * descriptor, then make a new packet descriptor and option descriptor
734 * for the next 16 fragments. The engineers say just an option
735 * descriptor is needed. I've tested up to 26 fragments with a single
736 * packet descriptor/option descriptor combo, so I use that for now.
737 *
738 * If problems develop with TSO, check this first.
739 */
740 numDesc = skb_shinfo(skb)->nr_frags + 1;
741 if (skb_is_gso(skb))
742 numDesc++;
743
744 /* When checking for free space in the ring, we need to also
745 * account for the initial Tx descriptor, and we always must leave
746 * at least one descriptor unused in the ring so that it doesn't
747 * wrap and look empty.
748 *
749 * The only time we should loop here is when we hit the race
750 * between marking the queue awake and updating the cleared index.
751 * Just loop and it will appear. This comes from the acenic driver.
752 */
753 while(unlikely(typhoon_num_free_tx(txRing) < (numDesc + 2)))
754 smp_rmb();
755
756 first_txd = (struct tx_desc *) (txRing->ringBase + txRing->lastWrite);
757 typhoon_inc_tx_index(&txRing->lastWrite, 1);
758
759 first_txd->flags = TYPHOON_TX_DESC | TYPHOON_DESC_VALID;
760 first_txd->numDesc = 0;
761 first_txd->len = 0;
762 first_txd->tx_addr = (u64)((unsigned long) skb);
763 first_txd->processFlags = 0;
764
765 if(skb->ip_summed == CHECKSUM_PARTIAL) {
766 /* The 3XP will figure out if this is UDP/TCP */
767 first_txd->processFlags |= TYPHOON_TX_PF_TCP_CHKSUM;
768 first_txd->processFlags |= TYPHOON_TX_PF_UDP_CHKSUM;
769 first_txd->processFlags |= TYPHOON_TX_PF_IP_CHKSUM;
770 }
771
772 if(vlan_tx_tag_present(skb)) {
773 first_txd->processFlags |=
774 TYPHOON_TX_PF_INSERT_VLAN | TYPHOON_TX_PF_VLAN_PRIORITY;
775 first_txd->processFlags |=
776 cpu_to_le32(htons(vlan_tx_tag_get(skb)) <<
777 TYPHOON_TX_PF_VLAN_TAG_SHIFT);
778 }
779
780 if (skb_is_gso(skb)) {
781 first_txd->processFlags |= TYPHOON_TX_PF_TCP_SEGMENT;
782 first_txd->numDesc++;
783
784 typhoon_tso_fill(skb, txRing, tp->txlo_dma_addr);
785 }
786
787 txd = (struct tx_desc *) (txRing->ringBase + txRing->lastWrite);
788 typhoon_inc_tx_index(&txRing->lastWrite, 1);
789
790 /* No need to worry about padding packet -- the firmware pads
791 * it with zeros to ETH_ZLEN for us.
792 */
793 if(skb_shinfo(skb)->nr_frags == 0) {
794 skb_dma = pci_map_single(tp->tx_pdev, skb->data, skb->len,
795 PCI_DMA_TODEVICE);
796 txd->flags = TYPHOON_FRAG_DESC | TYPHOON_DESC_VALID;
797 txd->len = cpu_to_le16(skb->len);
798 txd->frag.addr = cpu_to_le32(skb_dma);
799 txd->frag.addrHi = 0;
800 first_txd->numDesc++;
801 } else {
802 int i, len;
803
804 len = skb_headlen(skb);
805 skb_dma = pci_map_single(tp->tx_pdev, skb->data, len,
806 PCI_DMA_TODEVICE);
807 txd->flags = TYPHOON_FRAG_DESC | TYPHOON_DESC_VALID;
808 txd->len = cpu_to_le16(len);
809 txd->frag.addr = cpu_to_le32(skb_dma);
810 txd->frag.addrHi = 0;
811 first_txd->numDesc++;
812
813 for(i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
814 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
815 void *frag_addr;
816
817 txd = (struct tx_desc *) (txRing->ringBase +
818 txRing->lastWrite);
819 typhoon_inc_tx_index(&txRing->lastWrite, 1);
820
821 len = frag->size;
822 frag_addr = (void *) page_address(frag->page) +
823 frag->page_offset;
824 skb_dma = pci_map_single(tp->tx_pdev, frag_addr, len,
825 PCI_DMA_TODEVICE);
826 txd->flags = TYPHOON_FRAG_DESC | TYPHOON_DESC_VALID;
827 txd->len = cpu_to_le16(len);
828 txd->frag.addr = cpu_to_le32(skb_dma);
829 txd->frag.addrHi = 0;
830 first_txd->numDesc++;
831 }
832 }
833
834 /* Kick the 3XP
835 */
836 wmb();
837 iowrite32(txRing->lastWrite, tp->tx_ioaddr + txRing->writeRegister);
838
839 /* If we don't have room to put the worst case packet on the
840 * queue, then we must stop the queue. We need 2 extra
841 * descriptors -- one to prevent ring wrap, and one for the
842 * Tx header.
843 */
844 numDesc = MAX_SKB_FRAGS + TSO_NUM_DESCRIPTORS + 1;
845
846 if(typhoon_num_free_tx(txRing) < (numDesc + 2)) {
847 netif_stop_queue(dev);
848
849 /* A Tx complete IRQ could have gotten between, making
850 * the ring free again. Only need to recheck here, since
851 * Tx is serialized.
852 */
853 if(typhoon_num_free_tx(txRing) >= (numDesc + 2))
854 netif_wake_queue(dev);
855 }
856
857 return NETDEV_TX_OK;
858 }
859
860 static void
861 typhoon_set_rx_mode(struct net_device *dev)
862 {
863 struct typhoon *tp = netdev_priv(dev);
864 struct cmd_desc xp_cmd;
865 u32 mc_filter[2];
866 __le16 filter;
867
868 filter = TYPHOON_RX_FILTER_DIRECTED | TYPHOON_RX_FILTER_BROADCAST;
869 if(dev->flags & IFF_PROMISC) {
870 filter |= TYPHOON_RX_FILTER_PROMISCOUS;
871 } else if ((netdev_mc_count(dev) > multicast_filter_limit) ||
872 (dev->flags & IFF_ALLMULTI)) {
873 /* Too many to match, or accept all multicasts. */
874 filter |= TYPHOON_RX_FILTER_ALL_MCAST;
875 } else if (!netdev_mc_empty(dev)) {
876 struct netdev_hw_addr *ha;
877
878 memset(mc_filter, 0, sizeof(mc_filter));
879 netdev_for_each_mc_addr(ha, dev) {
880 int bit = ether_crc(ETH_ALEN, ha->addr) & 0x3f;
881 mc_filter[bit >> 5] |= 1 << (bit & 0x1f);
882 }
883
884 INIT_COMMAND_NO_RESPONSE(&xp_cmd,
885 TYPHOON_CMD_SET_MULTICAST_HASH);
886 xp_cmd.parm1 = TYPHOON_MCAST_HASH_SET;
887 xp_cmd.parm2 = cpu_to_le32(mc_filter[0]);
888 xp_cmd.parm3 = cpu_to_le32(mc_filter[1]);
889 typhoon_issue_command(tp, 1, &xp_cmd, 0, NULL);
890
891 filter |= TYPHOON_RX_FILTER_MCAST_HASH;
892 }
893
894 INIT_COMMAND_WITH_RESPONSE(&xp_cmd, TYPHOON_CMD_SET_RX_FILTER);
895 xp_cmd.parm1 = filter;
896 typhoon_issue_command(tp, 1, &xp_cmd, 0, NULL);
897 }
898
899 static int
900 typhoon_do_get_stats(struct typhoon *tp)
901 {
902 struct net_device_stats *stats = &tp->stats;
903 struct net_device_stats *saved = &tp->stats_saved;
904 struct cmd_desc xp_cmd;
905 struct resp_desc xp_resp[7];
906 struct stats_resp *s = (struct stats_resp *) xp_resp;
907 int err;
908
909 INIT_COMMAND_WITH_RESPONSE(&xp_cmd, TYPHOON_CMD_READ_STATS);
910 err = typhoon_issue_command(tp, 1, &xp_cmd, 7, xp_resp);
911 if(err < 0)
912 return err;
913
914 /* 3Com's Linux driver uses txMultipleCollisions as it's
915 * collisions value, but there is some other collision info as well...
916 *
917 * The extra status reported would be a good candidate for
918 * ethtool_ops->get_{strings,stats}()
919 */
920 stats->tx_packets = le32_to_cpu(s->txPackets) +
921 saved->tx_packets;
922 stats->tx_bytes = le64_to_cpu(s->txBytes) +
923 saved->tx_bytes;
924 stats->tx_errors = le32_to_cpu(s->txCarrierLost) +
925 saved->tx_errors;
926 stats->tx_carrier_errors = le32_to_cpu(s->txCarrierLost) +
927 saved->tx_carrier_errors;
928 stats->collisions = le32_to_cpu(s->txMultipleCollisions) +
929 saved->collisions;
930 stats->rx_packets = le32_to_cpu(s->rxPacketsGood) +
931 saved->rx_packets;
932 stats->rx_bytes = le64_to_cpu(s->rxBytesGood) +
933 saved->rx_bytes;
934 stats->rx_fifo_errors = le32_to_cpu(s->rxFifoOverruns) +
935 saved->rx_fifo_errors;
936 stats->rx_errors = le32_to_cpu(s->rxFifoOverruns) +
937 le32_to_cpu(s->BadSSD) + le32_to_cpu(s->rxCrcErrors) +
938 saved->rx_errors;
939 stats->rx_crc_errors = le32_to_cpu(s->rxCrcErrors) +
940 saved->rx_crc_errors;
941 stats->rx_length_errors = le32_to_cpu(s->rxOversized) +
942 saved->rx_length_errors;
943 tp->speed = (s->linkStatus & TYPHOON_LINK_100MBPS) ?
944 SPEED_100 : SPEED_10;
945 tp->duplex = (s->linkStatus & TYPHOON_LINK_FULL_DUPLEX) ?
946 DUPLEX_FULL : DUPLEX_HALF;
947
948 return 0;
949 }
950
951 static struct net_device_stats *
952 typhoon_get_stats(struct net_device *dev)
953 {
954 struct typhoon *tp = netdev_priv(dev);
955 struct net_device_stats *stats = &tp->stats;
956 struct net_device_stats *saved = &tp->stats_saved;
957
958 smp_rmb();
959 if(tp->card_state == Sleeping)
960 return saved;
961
962 if(typhoon_do_get_stats(tp) < 0) {
963 netdev_err(dev, "error getting stats\n");
964 return saved;
965 }
966
967 return stats;
968 }
969
970 static int
971 typhoon_set_mac_address(struct net_device *dev, void *addr)
972 {
973 struct sockaddr *saddr = (struct sockaddr *) addr;
974
975 if(netif_running(dev))
976 return -EBUSY;
977
978 memcpy(dev->dev_addr, saddr->sa_data, dev->addr_len);
979 return 0;
980 }
981
982 static void
983 typhoon_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
984 {
985 struct typhoon *tp = netdev_priv(dev);
986 struct pci_dev *pci_dev = tp->pdev;
987 struct cmd_desc xp_cmd;
988 struct resp_desc xp_resp[3];
989
990 smp_rmb();
991 if(tp->card_state == Sleeping) {
992 strcpy(info->fw_version, "Sleep image");
993 } else {
994 INIT_COMMAND_WITH_RESPONSE(&xp_cmd, TYPHOON_CMD_READ_VERSIONS);
995 if(typhoon_issue_command(tp, 1, &xp_cmd, 3, xp_resp) < 0) {
996 strcpy(info->fw_version, "Unknown runtime");
997 } else {
998 u32 sleep_ver = le32_to_cpu(xp_resp[0].parm2);
999 snprintf(info->fw_version, 32, "%02x.%03x.%03x",
1000 sleep_ver >> 24, (sleep_ver >> 12) & 0xfff,
1001 sleep_ver & 0xfff);
1002 }
1003 }
1004
1005 strcpy(info->driver, KBUILD_MODNAME);
1006 strcpy(info->bus_info, pci_name(pci_dev));
1007 }
1008
1009 static int
1010 typhoon_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
1011 {
1012 struct typhoon *tp = netdev_priv(dev);
1013
1014 cmd->supported = SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full |
1015 SUPPORTED_Autoneg;
1016
1017 switch (tp->xcvr_select) {
1018 case TYPHOON_XCVR_10HALF:
1019 cmd->advertising = ADVERTISED_10baseT_Half;
1020 break;
1021 case TYPHOON_XCVR_10FULL:
1022 cmd->advertising = ADVERTISED_10baseT_Full;
1023 break;
1024 case TYPHOON_XCVR_100HALF:
1025 cmd->advertising = ADVERTISED_100baseT_Half;
1026 break;
1027 case TYPHOON_XCVR_100FULL:
1028 cmd->advertising = ADVERTISED_100baseT_Full;
1029 break;
1030 case TYPHOON_XCVR_AUTONEG:
1031 cmd->advertising = ADVERTISED_10baseT_Half |
1032 ADVERTISED_10baseT_Full |
1033 ADVERTISED_100baseT_Half |
1034 ADVERTISED_100baseT_Full |
1035 ADVERTISED_Autoneg;
1036 break;
1037 }
1038
1039 if(tp->capabilities & TYPHOON_FIBER) {
1040 cmd->supported |= SUPPORTED_FIBRE;
1041 cmd->advertising |= ADVERTISED_FIBRE;
1042 cmd->port = PORT_FIBRE;
1043 } else {
1044 cmd->supported |= SUPPORTED_10baseT_Half |
1045 SUPPORTED_10baseT_Full |
1046 SUPPORTED_TP;
1047 cmd->advertising |= ADVERTISED_TP;
1048 cmd->port = PORT_TP;
1049 }
1050
1051 /* need to get stats to make these link speed/duplex valid */
1052 typhoon_do_get_stats(tp);
1053 ethtool_cmd_speed_set(cmd, tp->speed);
1054 cmd->duplex = tp->duplex;
1055 cmd->phy_address = 0;
1056 cmd->transceiver = XCVR_INTERNAL;
1057 if(tp->xcvr_select == TYPHOON_XCVR_AUTONEG)
1058 cmd->autoneg = AUTONEG_ENABLE;
1059 else
1060 cmd->autoneg = AUTONEG_DISABLE;
1061 cmd->maxtxpkt = 1;
1062 cmd->maxrxpkt = 1;
1063
1064 return 0;
1065 }
1066
1067 static int
1068 typhoon_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
1069 {
1070 struct typhoon *tp = netdev_priv(dev);
1071 u32 speed = ethtool_cmd_speed(cmd);
1072 struct cmd_desc xp_cmd;
1073 __le16 xcvr;
1074 int err;
1075
1076 err = -EINVAL;
1077 if (cmd->autoneg == AUTONEG_ENABLE) {
1078 xcvr = TYPHOON_XCVR_AUTONEG;
1079 } else {
1080 if (cmd->duplex == DUPLEX_HALF) {
1081 if (speed == SPEED_10)
1082 xcvr = TYPHOON_XCVR_10HALF;
1083 else if (speed == SPEED_100)
1084 xcvr = TYPHOON_XCVR_100HALF;
1085 else
1086 goto out;
1087 } else if (cmd->duplex == DUPLEX_FULL) {
1088 if (speed == SPEED_10)
1089 xcvr = TYPHOON_XCVR_10FULL;
1090 else if (speed == SPEED_100)
1091 xcvr = TYPHOON_XCVR_100FULL;
1092 else
1093 goto out;
1094 } else
1095 goto out;
1096 }
1097
1098 INIT_COMMAND_NO_RESPONSE(&xp_cmd, TYPHOON_CMD_XCVR_SELECT);
1099 xp_cmd.parm1 = xcvr;
1100 err = typhoon_issue_command(tp, 1, &xp_cmd, 0, NULL);
1101 if(err < 0)
1102 goto out;
1103
1104 tp->xcvr_select = xcvr;
1105 if(cmd->autoneg == AUTONEG_ENABLE) {
1106 tp->speed = 0xff; /* invalid */
1107 tp->duplex = 0xff; /* invalid */
1108 } else {
1109 tp->speed = speed;
1110 tp->duplex = cmd->duplex;
1111 }
1112
1113 out:
1114 return err;
1115 }
1116
1117 static void
1118 typhoon_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
1119 {
1120 struct typhoon *tp = netdev_priv(dev);
1121
1122 wol->supported = WAKE_PHY | WAKE_MAGIC;
1123 wol->wolopts = 0;
1124 if(tp->wol_events & TYPHOON_WAKE_LINK_EVENT)
1125 wol->wolopts |= WAKE_PHY;
1126 if(tp->wol_events & TYPHOON_WAKE_MAGIC_PKT)
1127 wol->wolopts |= WAKE_MAGIC;
1128 memset(&wol->sopass, 0, sizeof(wol->sopass));
1129 }
1130
1131 static int
1132 typhoon_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
1133 {
1134 struct typhoon *tp = netdev_priv(dev);
1135
1136 if(wol->wolopts & ~(WAKE_PHY | WAKE_MAGIC))
1137 return -EINVAL;
1138
1139 tp->wol_events = 0;
1140 if(wol->wolopts & WAKE_PHY)
1141 tp->wol_events |= TYPHOON_WAKE_LINK_EVENT;
1142 if(wol->wolopts & WAKE_MAGIC)
1143 tp->wol_events |= TYPHOON_WAKE_MAGIC_PKT;
1144
1145 return 0;
1146 }
1147
1148 static void
1149 typhoon_get_ringparam(struct net_device *dev, struct ethtool_ringparam *ering)
1150 {
1151 ering->rx_max_pending = RXENT_ENTRIES;
1152 ering->rx_mini_max_pending = 0;
1153 ering->rx_jumbo_max_pending = 0;
1154 ering->tx_max_pending = TXLO_ENTRIES - 1;
1155
1156 ering->rx_pending = RXENT_ENTRIES;
1157 ering->rx_mini_pending = 0;
1158 ering->rx_jumbo_pending = 0;
1159 ering->tx_pending = TXLO_ENTRIES - 1;
1160 }
1161
1162 static const struct ethtool_ops typhoon_ethtool_ops = {
1163 .get_settings = typhoon_get_settings,
1164 .set_settings = typhoon_set_settings,
1165 .get_drvinfo = typhoon_get_drvinfo,
1166 .get_wol = typhoon_get_wol,
1167 .set_wol = typhoon_set_wol,
1168 .get_link = ethtool_op_get_link,
1169 .get_ringparam = typhoon_get_ringparam,
1170 };
1171
1172 static int
1173 typhoon_wait_interrupt(void __iomem *ioaddr)
1174 {
1175 int i, err = 0;
1176
1177 for(i = 0; i < TYPHOON_WAIT_TIMEOUT; i++) {
1178 if(ioread32(ioaddr + TYPHOON_REG_INTR_STATUS) &
1179 TYPHOON_INTR_BOOTCMD)
1180 goto out;
1181 udelay(TYPHOON_UDELAY);
1182 }
1183
1184 err = -ETIMEDOUT;
1185
1186 out:
1187 iowrite32(TYPHOON_INTR_BOOTCMD, ioaddr + TYPHOON_REG_INTR_STATUS);
1188 return err;
1189 }
1190
1191 #define shared_offset(x) offsetof(struct typhoon_shared, x)
1192
1193 static void
1194 typhoon_init_interface(struct typhoon *tp)
1195 {
1196 struct typhoon_interface *iface = &tp->shared->iface;
1197 dma_addr_t shared_dma;
1198
1199 memset(tp->shared, 0, sizeof(struct typhoon_shared));
1200
1201 /* The *Hi members of iface are all init'd to zero by the memset().
1202 */
1203 shared_dma = tp->shared_dma + shared_offset(indexes);
1204 iface->ringIndex = cpu_to_le32(shared_dma);
1205
1206 shared_dma = tp->shared_dma + shared_offset(txLo);
1207 iface->txLoAddr = cpu_to_le32(shared_dma);
1208 iface->txLoSize = cpu_to_le32(TXLO_ENTRIES * sizeof(struct tx_desc));
1209
1210 shared_dma = tp->shared_dma + shared_offset(txHi);
1211 iface->txHiAddr = cpu_to_le32(shared_dma);
1212 iface->txHiSize = cpu_to_le32(TXHI_ENTRIES * sizeof(struct tx_desc));
1213
1214 shared_dma = tp->shared_dma + shared_offset(rxBuff);
1215 iface->rxBuffAddr = cpu_to_le32(shared_dma);
1216 iface->rxBuffSize = cpu_to_le32(RXFREE_ENTRIES *
1217 sizeof(struct rx_free));
1218
1219 shared_dma = tp->shared_dma + shared_offset(rxLo);
1220 iface->rxLoAddr = cpu_to_le32(shared_dma);
1221 iface->rxLoSize = cpu_to_le32(RX_ENTRIES * sizeof(struct rx_desc));
1222
1223 shared_dma = tp->shared_dma + shared_offset(rxHi);
1224 iface->rxHiAddr = cpu_to_le32(shared_dma);
1225 iface->rxHiSize = cpu_to_le32(RX_ENTRIES * sizeof(struct rx_desc));
1226
1227 shared_dma = tp->shared_dma + shared_offset(cmd);
1228 iface->cmdAddr = cpu_to_le32(shared_dma);
1229 iface->cmdSize = cpu_to_le32(COMMAND_RING_SIZE);
1230
1231 shared_dma = tp->shared_dma + shared_offset(resp);
1232 iface->respAddr = cpu_to_le32(shared_dma);
1233 iface->respSize = cpu_to_le32(RESPONSE_RING_SIZE);
1234
1235 shared_dma = tp->shared_dma + shared_offset(zeroWord);
1236 iface->zeroAddr = cpu_to_le32(shared_dma);
1237
1238 tp->indexes = &tp->shared->indexes;
1239 tp->txLoRing.ringBase = (u8 *) tp->shared->txLo;
1240 tp->txHiRing.ringBase = (u8 *) tp->shared->txHi;
1241 tp->rxLoRing.ringBase = (u8 *) tp->shared->rxLo;
1242 tp->rxHiRing.ringBase = (u8 *) tp->shared->rxHi;
1243 tp->rxBuffRing.ringBase = (u8 *) tp->shared->rxBuff;
1244 tp->cmdRing.ringBase = (u8 *) tp->shared->cmd;
1245 tp->respRing.ringBase = (u8 *) tp->shared->resp;
1246
1247 tp->txLoRing.writeRegister = TYPHOON_REG_TX_LO_READY;
1248 tp->txHiRing.writeRegister = TYPHOON_REG_TX_HI_READY;
1249
1250 tp->txlo_dma_addr = le32_to_cpu(iface->txLoAddr);
1251 tp->card_state = Sleeping;
1252
1253 tp->offload = TYPHOON_OFFLOAD_IP_CHKSUM | TYPHOON_OFFLOAD_TCP_CHKSUM;
1254 tp->offload |= TYPHOON_OFFLOAD_UDP_CHKSUM | TSO_OFFLOAD_ON;
1255 tp->offload |= TYPHOON_OFFLOAD_VLAN;
1256
1257 spin_lock_init(&tp->command_lock);
1258
1259 /* Force the writes to the shared memory area out before continuing. */
1260 wmb();
1261 }
1262
1263 static void
1264 typhoon_init_rings(struct typhoon *tp)
1265 {
1266 memset(tp->indexes, 0, sizeof(struct typhoon_indexes));
1267
1268 tp->txLoRing.lastWrite = 0;
1269 tp->txHiRing.lastWrite = 0;
1270 tp->rxLoRing.lastWrite = 0;
1271 tp->rxHiRing.lastWrite = 0;
1272 tp->rxBuffRing.lastWrite = 0;
1273 tp->cmdRing.lastWrite = 0;
1274 tp->respRing.lastWrite = 0;
1275
1276 tp->txLoRing.lastRead = 0;
1277 tp->txHiRing.lastRead = 0;
1278 }
1279
1280 static const struct firmware *typhoon_fw;
1281
1282 static int
1283 typhoon_request_firmware(struct typhoon *tp)
1284 {
1285 const struct typhoon_file_header *fHdr;
1286 const struct typhoon_section_header *sHdr;
1287 const u8 *image_data;
1288 u32 numSections;
1289 u32 section_len;
1290 u32 remaining;
1291 int err;
1292
1293 if (typhoon_fw)
1294 return 0;
1295
1296 err = request_firmware(&typhoon_fw, FIRMWARE_NAME, &tp->pdev->dev);
1297 if (err) {
1298 netdev_err(tp->dev, "Failed to load firmware \"%s\"\n",
1299 FIRMWARE_NAME);
1300 return err;
1301 }
1302
1303 image_data = (u8 *) typhoon_fw->data;
1304 remaining = typhoon_fw->size;
1305 if (remaining < sizeof(struct typhoon_file_header))
1306 goto invalid_fw;
1307
1308 fHdr = (struct typhoon_file_header *) image_data;
1309 if (memcmp(fHdr->tag, "TYPHOON", 8))
1310 goto invalid_fw;
1311
1312 numSections = le32_to_cpu(fHdr->numSections);
1313 image_data += sizeof(struct typhoon_file_header);
1314 remaining -= sizeof(struct typhoon_file_header);
1315
1316 while (numSections--) {
1317 if (remaining < sizeof(struct typhoon_section_header))
1318 goto invalid_fw;
1319
1320 sHdr = (struct typhoon_section_header *) image_data;
1321 image_data += sizeof(struct typhoon_section_header);
1322 section_len = le32_to_cpu(sHdr->len);
1323
1324 if (remaining < section_len)
1325 goto invalid_fw;
1326
1327 image_data += section_len;
1328 remaining -= section_len;
1329 }
1330
1331 return 0;
1332
1333 invalid_fw:
1334 netdev_err(tp->dev, "Invalid firmware image\n");
1335 release_firmware(typhoon_fw);
1336 typhoon_fw = NULL;
1337 return -EINVAL;
1338 }
1339
1340 static int
1341 typhoon_download_firmware(struct typhoon *tp)
1342 {
1343 void __iomem *ioaddr = tp->ioaddr;
1344 struct pci_dev *pdev = tp->pdev;
1345 const struct typhoon_file_header *fHdr;
1346 const struct typhoon_section_header *sHdr;
1347 const u8 *image_data;
1348 void *dpage;
1349 dma_addr_t dpage_dma;
1350 __sum16 csum;
1351 u32 irqEnabled;
1352 u32 irqMasked;
1353 u32 numSections;
1354 u32 section_len;
1355 u32 len;
1356 u32 load_addr;
1357 u32 hmac;
1358 int i;
1359 int err;
1360
1361 image_data = (u8 *) typhoon_fw->data;
1362 fHdr = (struct typhoon_file_header *) image_data;
1363
1364 /* Cannot just map the firmware image using pci_map_single() as
1365 * the firmware is vmalloc()'d and may not be physically contiguous,
1366 * so we allocate some consistent memory to copy the sections into.
1367 */
1368 err = -ENOMEM;
1369 dpage = pci_alloc_consistent(pdev, PAGE_SIZE, &dpage_dma);
1370 if(!dpage) {
1371 netdev_err(tp->dev, "no DMA mem for firmware\n");
1372 goto err_out;
1373 }
1374
1375 irqEnabled = ioread32(ioaddr + TYPHOON_REG_INTR_ENABLE);
1376 iowrite32(irqEnabled | TYPHOON_INTR_BOOTCMD,
1377 ioaddr + TYPHOON_REG_INTR_ENABLE);
1378 irqMasked = ioread32(ioaddr + TYPHOON_REG_INTR_MASK);
1379 iowrite32(irqMasked | TYPHOON_INTR_BOOTCMD,
1380 ioaddr + TYPHOON_REG_INTR_MASK);
1381
1382 err = -ETIMEDOUT;
1383 if(typhoon_wait_status(ioaddr, TYPHOON_STATUS_WAITING_FOR_HOST) < 0) {
1384 netdev_err(tp->dev, "card ready timeout\n");
1385 goto err_out_irq;
1386 }
1387
1388 numSections = le32_to_cpu(fHdr->numSections);
1389 load_addr = le32_to_cpu(fHdr->startAddr);
1390
1391 iowrite32(TYPHOON_INTR_BOOTCMD, ioaddr + TYPHOON_REG_INTR_STATUS);
1392 iowrite32(load_addr, ioaddr + TYPHOON_REG_DOWNLOAD_BOOT_ADDR);
1393 hmac = le32_to_cpu(fHdr->hmacDigest[0]);
1394 iowrite32(hmac, ioaddr + TYPHOON_REG_DOWNLOAD_HMAC_0);
1395 hmac = le32_to_cpu(fHdr->hmacDigest[1]);
1396 iowrite32(hmac, ioaddr + TYPHOON_REG_DOWNLOAD_HMAC_1);
1397 hmac = le32_to_cpu(fHdr->hmacDigest[2]);
1398 iowrite32(hmac, ioaddr + TYPHOON_REG_DOWNLOAD_HMAC_2);
1399 hmac = le32_to_cpu(fHdr->hmacDigest[3]);
1400 iowrite32(hmac, ioaddr + TYPHOON_REG_DOWNLOAD_HMAC_3);
1401 hmac = le32_to_cpu(fHdr->hmacDigest[4]);
1402 iowrite32(hmac, ioaddr + TYPHOON_REG_DOWNLOAD_HMAC_4);
1403 typhoon_post_pci_writes(ioaddr);
1404 iowrite32(TYPHOON_BOOTCMD_RUNTIME_IMAGE, ioaddr + TYPHOON_REG_COMMAND);
1405
1406 image_data += sizeof(struct typhoon_file_header);
1407
1408 /* The ioread32() in typhoon_wait_interrupt() will force the
1409 * last write to the command register to post, so
1410 * we don't need a typhoon_post_pci_writes() after it.
1411 */
1412 for(i = 0; i < numSections; i++) {
1413 sHdr = (struct typhoon_section_header *) image_data;
1414 image_data += sizeof(struct typhoon_section_header);
1415 load_addr = le32_to_cpu(sHdr->startAddr);
1416 section_len = le32_to_cpu(sHdr->len);
1417
1418 while(section_len) {
1419 len = min_t(u32, section_len, PAGE_SIZE);
1420
1421 if(typhoon_wait_interrupt(ioaddr) < 0 ||
1422 ioread32(ioaddr + TYPHOON_REG_STATUS) !=
1423 TYPHOON_STATUS_WAITING_FOR_SEGMENT) {
1424 netdev_err(tp->dev, "segment ready timeout\n");
1425 goto err_out_irq;
1426 }
1427
1428 /* Do an pseudo IPv4 checksum on the data -- first
1429 * need to convert each u16 to cpu order before
1430 * summing. Fortunately, due to the properties of
1431 * the checksum, we can do this once, at the end.
1432 */
1433 csum = csum_fold(csum_partial_copy_nocheck(image_data,
1434 dpage, len,
1435 0));
1436
1437 iowrite32(len, ioaddr + TYPHOON_REG_BOOT_LENGTH);
1438 iowrite32(le16_to_cpu((__force __le16)csum),
1439 ioaddr + TYPHOON_REG_BOOT_CHECKSUM);
1440 iowrite32(load_addr,
1441 ioaddr + TYPHOON_REG_BOOT_DEST_ADDR);
1442 iowrite32(0, ioaddr + TYPHOON_REG_BOOT_DATA_HI);
1443 iowrite32(dpage_dma, ioaddr + TYPHOON_REG_BOOT_DATA_LO);
1444 typhoon_post_pci_writes(ioaddr);
1445 iowrite32(TYPHOON_BOOTCMD_SEG_AVAILABLE,
1446 ioaddr + TYPHOON_REG_COMMAND);
1447
1448 image_data += len;
1449 load_addr += len;
1450 section_len -= len;
1451 }
1452 }
1453
1454 if(typhoon_wait_interrupt(ioaddr) < 0 ||
1455 ioread32(ioaddr + TYPHOON_REG_STATUS) !=
1456 TYPHOON_STATUS_WAITING_FOR_SEGMENT) {
1457 netdev_err(tp->dev, "final segment ready timeout\n");
1458 goto err_out_irq;
1459 }
1460
1461 iowrite32(TYPHOON_BOOTCMD_DNLD_COMPLETE, ioaddr + TYPHOON_REG_COMMAND);
1462
1463 if(typhoon_wait_status(ioaddr, TYPHOON_STATUS_WAITING_FOR_BOOT) < 0) {
1464 netdev_err(tp->dev, "boot ready timeout, status 0x%0x\n",
1465 ioread32(ioaddr + TYPHOON_REG_STATUS));
1466 goto err_out_irq;
1467 }
1468
1469 err = 0;
1470
1471 err_out_irq:
1472 iowrite32(irqMasked, ioaddr + TYPHOON_REG_INTR_MASK);
1473 iowrite32(irqEnabled, ioaddr + TYPHOON_REG_INTR_ENABLE);
1474
1475 pci_free_consistent(pdev, PAGE_SIZE, dpage, dpage_dma);
1476
1477 err_out:
1478 return err;
1479 }
1480
1481 static int
1482 typhoon_boot_3XP(struct typhoon *tp, u32 initial_status)
1483 {
1484 void __iomem *ioaddr = tp->ioaddr;
1485
1486 if(typhoon_wait_status(ioaddr, initial_status) < 0) {
1487 netdev_err(tp->dev, "boot ready timeout\n");
1488 goto out_timeout;
1489 }
1490
1491 iowrite32(0, ioaddr + TYPHOON_REG_BOOT_RECORD_ADDR_HI);
1492 iowrite32(tp->shared_dma, ioaddr + TYPHOON_REG_BOOT_RECORD_ADDR_LO);
1493 typhoon_post_pci_writes(ioaddr);
1494 iowrite32(TYPHOON_BOOTCMD_REG_BOOT_RECORD,
1495 ioaddr + TYPHOON_REG_COMMAND);
1496
1497 if(typhoon_wait_status(ioaddr, TYPHOON_STATUS_RUNNING) < 0) {
1498 netdev_err(tp->dev, "boot finish timeout (status 0x%x)\n",
1499 ioread32(ioaddr + TYPHOON_REG_STATUS));
1500 goto out_timeout;
1501 }
1502
1503 /* Clear the Transmit and Command ready registers
1504 */
1505 iowrite32(0, ioaddr + TYPHOON_REG_TX_HI_READY);
1506 iowrite32(0, ioaddr + TYPHOON_REG_CMD_READY);
1507 iowrite32(0, ioaddr + TYPHOON_REG_TX_LO_READY);
1508 typhoon_post_pci_writes(ioaddr);
1509 iowrite32(TYPHOON_BOOTCMD_BOOT, ioaddr + TYPHOON_REG_COMMAND);
1510
1511 return 0;
1512
1513 out_timeout:
1514 return -ETIMEDOUT;
1515 }
1516
1517 static u32
1518 typhoon_clean_tx(struct typhoon *tp, struct transmit_ring *txRing,
1519 volatile __le32 * index)
1520 {
1521 u32 lastRead = txRing->lastRead;
1522 struct tx_desc *tx;
1523 dma_addr_t skb_dma;
1524 int dma_len;
1525 int type;
1526
1527 while(lastRead != le32_to_cpu(*index)) {
1528 tx = (struct tx_desc *) (txRing->ringBase + lastRead);
1529 type = tx->flags & TYPHOON_TYPE_MASK;
1530
1531 if(type == TYPHOON_TX_DESC) {
1532 /* This tx_desc describes a packet.
1533 */
1534 unsigned long ptr = tx->tx_addr;
1535 struct sk_buff *skb = (struct sk_buff *) ptr;
1536 dev_kfree_skb_irq(skb);
1537 } else if(type == TYPHOON_FRAG_DESC) {
1538 /* This tx_desc describes a memory mapping. Free it.
1539 */
1540 skb_dma = (dma_addr_t) le32_to_cpu(tx->frag.addr);
1541 dma_len = le16_to_cpu(tx->len);
1542 pci_unmap_single(tp->pdev, skb_dma, dma_len,
1543 PCI_DMA_TODEVICE);
1544 }
1545
1546 tx->flags = 0;
1547 typhoon_inc_tx_index(&lastRead, 1);
1548 }
1549
1550 return lastRead;
1551 }
1552
1553 static void
1554 typhoon_tx_complete(struct typhoon *tp, struct transmit_ring *txRing,
1555 volatile __le32 * index)
1556 {
1557 u32 lastRead;
1558 int numDesc = MAX_SKB_FRAGS + 1;
1559
1560 /* This will need changing if we start to use the Hi Tx ring. */
1561 lastRead = typhoon_clean_tx(tp, txRing, index);
1562 if(netif_queue_stopped(tp->dev) && typhoon_num_free(txRing->lastWrite,
1563 lastRead, TXLO_ENTRIES) > (numDesc + 2))
1564 netif_wake_queue(tp->dev);
1565
1566 txRing->lastRead = lastRead;
1567 smp_wmb();
1568 }
1569
1570 static void
1571 typhoon_recycle_rx_skb(struct typhoon *tp, u32 idx)
1572 {
1573 struct typhoon_indexes *indexes = tp->indexes;
1574 struct rxbuff_ent *rxb = &tp->rxbuffers[idx];
1575 struct basic_ring *ring = &tp->rxBuffRing;
1576 struct rx_free *r;
1577
1578 if((ring->lastWrite + sizeof(*r)) % (RXFREE_ENTRIES * sizeof(*r)) ==
1579 le32_to_cpu(indexes->rxBuffCleared)) {
1580 /* no room in ring, just drop the skb
1581 */
1582 dev_kfree_skb_any(rxb->skb);
1583 rxb->skb = NULL;
1584 return;
1585 }
1586
1587 r = (struct rx_free *) (ring->ringBase + ring->lastWrite);
1588 typhoon_inc_rxfree_index(&ring->lastWrite, 1);
1589 r->virtAddr = idx;
1590 r->physAddr = cpu_to_le32(rxb->dma_addr);
1591
1592 /* Tell the card about it */
1593 wmb();
1594 indexes->rxBuffReady = cpu_to_le32(ring->lastWrite);
1595 }
1596
1597 static int
1598 typhoon_alloc_rx_skb(struct typhoon *tp, u32 idx)
1599 {
1600 struct typhoon_indexes *indexes = tp->indexes;
1601 struct rxbuff_ent *rxb = &tp->rxbuffers[idx];
1602 struct basic_ring *ring = &tp->rxBuffRing;
1603 struct rx_free *r;
1604 struct sk_buff *skb;
1605 dma_addr_t dma_addr;
1606
1607 rxb->skb = NULL;
1608
1609 if((ring->lastWrite + sizeof(*r)) % (RXFREE_ENTRIES * sizeof(*r)) ==
1610 le32_to_cpu(indexes->rxBuffCleared))
1611 return -ENOMEM;
1612
1613 skb = dev_alloc_skb(PKT_BUF_SZ);
1614 if(!skb)
1615 return -ENOMEM;
1616
1617 #if 0
1618 /* Please, 3com, fix the firmware to allow DMA to a unaligned
1619 * address! Pretty please?
1620 */
1621 skb_reserve(skb, 2);
1622 #endif
1623
1624 skb->dev = tp->dev;
1625 dma_addr = pci_map_single(tp->pdev, skb->data,
1626 PKT_BUF_SZ, PCI_DMA_FROMDEVICE);
1627
1628 /* Since no card does 64 bit DAC, the high bits will never
1629 * change from zero.
1630 */
1631 r = (struct rx_free *) (ring->ringBase + ring->lastWrite);
1632 typhoon_inc_rxfree_index(&ring->lastWrite, 1);
1633 r->virtAddr = idx;
1634 r->physAddr = cpu_to_le32(dma_addr);
1635 rxb->skb = skb;
1636 rxb->dma_addr = dma_addr;
1637
1638 /* Tell the card about it */
1639 wmb();
1640 indexes->rxBuffReady = cpu_to_le32(ring->lastWrite);
1641 return 0;
1642 }
1643
1644 static int
1645 typhoon_rx(struct typhoon *tp, struct basic_ring *rxRing, volatile __le32 * ready,
1646 volatile __le32 * cleared, int budget)
1647 {
1648 struct rx_desc *rx;
1649 struct sk_buff *skb, *new_skb;
1650 struct rxbuff_ent *rxb;
1651 dma_addr_t dma_addr;
1652 u32 local_ready;
1653 u32 rxaddr;
1654 int pkt_len;
1655 u32 idx;
1656 __le32 csum_bits;
1657 int received;
1658
1659 received = 0;
1660 local_ready = le32_to_cpu(*ready);
1661 rxaddr = le32_to_cpu(*cleared);
1662 while(rxaddr != local_ready && budget > 0) {
1663 rx = (struct rx_desc *) (rxRing->ringBase + rxaddr);
1664 idx = rx->addr;
1665 rxb = &tp->rxbuffers[idx];
1666 skb = rxb->skb;
1667 dma_addr = rxb->dma_addr;
1668
1669 typhoon_inc_rx_index(&rxaddr, 1);
1670
1671 if(rx->flags & TYPHOON_RX_ERROR) {
1672 typhoon_recycle_rx_skb(tp, idx);
1673 continue;
1674 }
1675
1676 pkt_len = le16_to_cpu(rx->frameLen);
1677
1678 if(pkt_len < rx_copybreak &&
1679 (new_skb = dev_alloc_skb(pkt_len + 2)) != NULL) {
1680 skb_reserve(new_skb, 2);
1681 pci_dma_sync_single_for_cpu(tp->pdev, dma_addr,
1682 PKT_BUF_SZ,
1683 PCI_DMA_FROMDEVICE);
1684 skb_copy_to_linear_data(new_skb, skb->data, pkt_len);
1685 pci_dma_sync_single_for_device(tp->pdev, dma_addr,
1686 PKT_BUF_SZ,
1687 PCI_DMA_FROMDEVICE);
1688 skb_put(new_skb, pkt_len);
1689 typhoon_recycle_rx_skb(tp, idx);
1690 } else {
1691 new_skb = skb;
1692 skb_put(new_skb, pkt_len);
1693 pci_unmap_single(tp->pdev, dma_addr, PKT_BUF_SZ,
1694 PCI_DMA_FROMDEVICE);
1695 typhoon_alloc_rx_skb(tp, idx);
1696 }
1697 new_skb->protocol = eth_type_trans(new_skb, tp->dev);
1698 csum_bits = rx->rxStatus & (TYPHOON_RX_IP_CHK_GOOD |
1699 TYPHOON_RX_UDP_CHK_GOOD | TYPHOON_RX_TCP_CHK_GOOD);
1700 if(csum_bits ==
1701 (TYPHOON_RX_IP_CHK_GOOD | TYPHOON_RX_TCP_CHK_GOOD) ||
1702 csum_bits ==
1703 (TYPHOON_RX_IP_CHK_GOOD | TYPHOON_RX_UDP_CHK_GOOD)) {
1704 new_skb->ip_summed = CHECKSUM_UNNECESSARY;
1705 } else
1706 skb_checksum_none_assert(new_skb);
1707
1708 if (rx->rxStatus & TYPHOON_RX_VLAN)
1709 __vlan_hwaccel_put_tag(new_skb,
1710 ntohl(rx->vlanTag) & 0xffff);
1711 netif_receive_skb(new_skb);
1712
1713 received++;
1714 budget--;
1715 }
1716 *cleared = cpu_to_le32(rxaddr);
1717
1718 return received;
1719 }
1720
1721 static void
1722 typhoon_fill_free_ring(struct typhoon *tp)
1723 {
1724 u32 i;
1725
1726 for(i = 0; i < RXENT_ENTRIES; i++) {
1727 struct rxbuff_ent *rxb = &tp->rxbuffers[i];
1728 if(rxb->skb)
1729 continue;
1730 if(typhoon_alloc_rx_skb(tp, i) < 0)
1731 break;
1732 }
1733 }
1734
1735 static int
1736 typhoon_poll(struct napi_struct *napi, int budget)
1737 {
1738 struct typhoon *tp = container_of(napi, struct typhoon, napi);
1739 struct typhoon_indexes *indexes = tp->indexes;
1740 int work_done;
1741
1742 rmb();
1743 if(!tp->awaiting_resp && indexes->respReady != indexes->respCleared)
1744 typhoon_process_response(tp, 0, NULL);
1745
1746 if(le32_to_cpu(indexes->txLoCleared) != tp->txLoRing.lastRead)
1747 typhoon_tx_complete(tp, &tp->txLoRing, &indexes->txLoCleared);
1748
1749 work_done = 0;
1750
1751 if(indexes->rxHiCleared != indexes->rxHiReady) {
1752 work_done += typhoon_rx(tp, &tp->rxHiRing, &indexes->rxHiReady,
1753 &indexes->rxHiCleared, budget);
1754 }
1755
1756 if(indexes->rxLoCleared != indexes->rxLoReady) {
1757 work_done += typhoon_rx(tp, &tp->rxLoRing, &indexes->rxLoReady,
1758 &indexes->rxLoCleared, budget - work_done);
1759 }
1760
1761 if(le32_to_cpu(indexes->rxBuffCleared) == tp->rxBuffRing.lastWrite) {
1762 /* rxBuff ring is empty, try to fill it. */
1763 typhoon_fill_free_ring(tp);
1764 }
1765
1766 if (work_done < budget) {
1767 napi_complete(napi);
1768 iowrite32(TYPHOON_INTR_NONE,
1769 tp->ioaddr + TYPHOON_REG_INTR_MASK);
1770 typhoon_post_pci_writes(tp->ioaddr);
1771 }
1772
1773 return work_done;
1774 }
1775
1776 static irqreturn_t
1777 typhoon_interrupt(int irq, void *dev_instance)
1778 {
1779 struct net_device *dev = dev_instance;
1780 struct typhoon *tp = netdev_priv(dev);
1781 void __iomem *ioaddr = tp->ioaddr;
1782 u32 intr_status;
1783
1784 intr_status = ioread32(ioaddr + TYPHOON_REG_INTR_STATUS);
1785 if(!(intr_status & TYPHOON_INTR_HOST_INT))
1786 return IRQ_NONE;
1787
1788 iowrite32(intr_status, ioaddr + TYPHOON_REG_INTR_STATUS);
1789
1790 if (napi_schedule_prep(&tp->napi)) {
1791 iowrite32(TYPHOON_INTR_ALL, ioaddr + TYPHOON_REG_INTR_MASK);
1792 typhoon_post_pci_writes(ioaddr);
1793 __napi_schedule(&tp->napi);
1794 } else {
1795 netdev_err(dev, "Error, poll already scheduled\n");
1796 }
1797 return IRQ_HANDLED;
1798 }
1799
1800 static void
1801 typhoon_free_rx_rings(struct typhoon *tp)
1802 {
1803 u32 i;
1804
1805 for(i = 0; i < RXENT_ENTRIES; i++) {
1806 struct rxbuff_ent *rxb = &tp->rxbuffers[i];
1807 if(rxb->skb) {
1808 pci_unmap_single(tp->pdev, rxb->dma_addr, PKT_BUF_SZ,
1809 PCI_DMA_FROMDEVICE);
1810 dev_kfree_skb(rxb->skb);
1811 rxb->skb = NULL;
1812 }
1813 }
1814 }
1815
1816 static int
1817 typhoon_sleep(struct typhoon *tp, pci_power_t state, __le16 events)
1818 {
1819 struct pci_dev *pdev = tp->pdev;
1820 void __iomem *ioaddr = tp->ioaddr;
1821 struct cmd_desc xp_cmd;
1822 int err;
1823
1824 INIT_COMMAND_WITH_RESPONSE(&xp_cmd, TYPHOON_CMD_ENABLE_WAKE_EVENTS);
1825 xp_cmd.parm1 = events;
1826 err = typhoon_issue_command(tp, 1, &xp_cmd, 0, NULL);
1827 if(err < 0) {
1828 netdev_err(tp->dev, "typhoon_sleep(): wake events cmd err %d\n",
1829 err);
1830 return err;
1831 }
1832
1833 INIT_COMMAND_NO_RESPONSE(&xp_cmd, TYPHOON_CMD_GOTO_SLEEP);
1834 err = typhoon_issue_command(tp, 1, &xp_cmd, 0, NULL);
1835 if(err < 0) {
1836 netdev_err(tp->dev, "typhoon_sleep(): sleep cmd err %d\n", err);
1837 return err;
1838 }
1839
1840 if(typhoon_wait_status(ioaddr, TYPHOON_STATUS_SLEEPING) < 0)
1841 return -ETIMEDOUT;
1842
1843 /* Since we cannot monitor the status of the link while sleeping,
1844 * tell the world it went away.
1845 */
1846 netif_carrier_off(tp->dev);
1847
1848 pci_enable_wake(tp->pdev, state, 1);
1849 pci_disable_device(pdev);
1850 return pci_set_power_state(pdev, state);
1851 }
1852
1853 static int
1854 typhoon_wakeup(struct typhoon *tp, int wait_type)
1855 {
1856 struct pci_dev *pdev = tp->pdev;
1857 void __iomem *ioaddr = tp->ioaddr;
1858
1859 pci_set_power_state(pdev, PCI_D0);
1860 pci_restore_state(pdev);
1861
1862 /* Post 2.x.x versions of the Sleep Image require a reset before
1863 * we can download the Runtime Image. But let's not make users of
1864 * the old firmware pay for the reset.
1865 */
1866 iowrite32(TYPHOON_BOOTCMD_WAKEUP, ioaddr + TYPHOON_REG_COMMAND);
1867 if(typhoon_wait_status(ioaddr, TYPHOON_STATUS_WAITING_FOR_HOST) < 0 ||
1868 (tp->capabilities & TYPHOON_WAKEUP_NEEDS_RESET))
1869 return typhoon_reset(ioaddr, wait_type);
1870
1871 return 0;
1872 }
1873
1874 static int
1875 typhoon_start_runtime(struct typhoon *tp)
1876 {
1877 struct net_device *dev = tp->dev;
1878 void __iomem *ioaddr = tp->ioaddr;
1879 struct cmd_desc xp_cmd;
1880 int err;
1881
1882 typhoon_init_rings(tp);
1883 typhoon_fill_free_ring(tp);
1884
1885 err = typhoon_download_firmware(tp);
1886 if(err < 0) {
1887 netdev_err(tp->dev, "cannot load runtime on 3XP\n");
1888 goto error_out;
1889 }
1890
1891 if(typhoon_boot_3XP(tp, TYPHOON_STATUS_WAITING_FOR_BOOT) < 0) {
1892 netdev_err(tp->dev, "cannot boot 3XP\n");
1893 err = -EIO;
1894 goto error_out;
1895 }
1896
1897 INIT_COMMAND_NO_RESPONSE(&xp_cmd, TYPHOON_CMD_SET_MAX_PKT_SIZE);
1898 xp_cmd.parm1 = cpu_to_le16(PKT_BUF_SZ);
1899 err = typhoon_issue_command(tp, 1, &xp_cmd, 0, NULL);
1900 if(err < 0)
1901 goto error_out;
1902
1903 INIT_COMMAND_NO_RESPONSE(&xp_cmd, TYPHOON_CMD_SET_MAC_ADDRESS);
1904 xp_cmd.parm1 = cpu_to_le16(ntohs(*(__be16 *)&dev->dev_addr[0]));
1905 xp_cmd.parm2 = cpu_to_le32(ntohl(*(__be32 *)&dev->dev_addr[2]));
1906 err = typhoon_issue_command(tp, 1, &xp_cmd, 0, NULL);
1907 if(err < 0)
1908 goto error_out;
1909
1910 /* Disable IRQ coalescing -- we can reenable it when 3Com gives
1911 * us some more information on how to control it.
1912 */
1913 INIT_COMMAND_WITH_RESPONSE(&xp_cmd, TYPHOON_CMD_IRQ_COALESCE_CTRL);
1914 xp_cmd.parm1 = 0;
1915 err = typhoon_issue_command(tp, 1, &xp_cmd, 0, NULL);
1916 if(err < 0)
1917 goto error_out;
1918
1919 INIT_COMMAND_NO_RESPONSE(&xp_cmd, TYPHOON_CMD_XCVR_SELECT);
1920 xp_cmd.parm1 = tp->xcvr_select;
1921 err = typhoon_issue_command(tp, 1, &xp_cmd, 0, NULL);
1922 if(err < 0)
1923 goto error_out;
1924
1925 INIT_COMMAND_NO_RESPONSE(&xp_cmd, TYPHOON_CMD_VLAN_TYPE_WRITE);
1926 xp_cmd.parm1 = cpu_to_le16(ETH_P_8021Q);
1927 err = typhoon_issue_command(tp, 1, &xp_cmd, 0, NULL);
1928 if(err < 0)
1929 goto error_out;
1930
1931 INIT_COMMAND_NO_RESPONSE(&xp_cmd, TYPHOON_CMD_SET_OFFLOAD_TASKS);
1932 xp_cmd.parm2 = tp->offload;
1933 xp_cmd.parm3 = tp->offload;
1934 err = typhoon_issue_command(tp, 1, &xp_cmd, 0, NULL);
1935 if(err < 0)
1936 goto error_out;
1937
1938 typhoon_set_rx_mode(dev);
1939
1940 INIT_COMMAND_NO_RESPONSE(&xp_cmd, TYPHOON_CMD_TX_ENABLE);
1941 err = typhoon_issue_command(tp, 1, &xp_cmd, 0, NULL);
1942 if(err < 0)
1943 goto error_out;
1944
1945 INIT_COMMAND_WITH_RESPONSE(&xp_cmd, TYPHOON_CMD_RX_ENABLE);
1946 err = typhoon_issue_command(tp, 1, &xp_cmd, 0, NULL);
1947 if(err < 0)
1948 goto error_out;
1949
1950 tp->card_state = Running;
1951 smp_wmb();
1952
1953 iowrite32(TYPHOON_INTR_ENABLE_ALL, ioaddr + TYPHOON_REG_INTR_ENABLE);
1954 iowrite32(TYPHOON_INTR_NONE, ioaddr + TYPHOON_REG_INTR_MASK);
1955 typhoon_post_pci_writes(ioaddr);
1956
1957 return 0;
1958
1959 error_out:
1960 typhoon_reset(ioaddr, WaitNoSleep);
1961 typhoon_free_rx_rings(tp);
1962 typhoon_init_rings(tp);
1963 return err;
1964 }
1965
1966 static int
1967 typhoon_stop_runtime(struct typhoon *tp, int wait_type)
1968 {
1969 struct typhoon_indexes *indexes = tp->indexes;
1970 struct transmit_ring *txLo = &tp->txLoRing;
1971 void __iomem *ioaddr = tp->ioaddr;
1972 struct cmd_desc xp_cmd;
1973 int i;
1974
1975 /* Disable interrupts early, since we can't schedule a poll
1976 * when called with !netif_running(). This will be posted
1977 * when we force the posting of the command.
1978 */
1979 iowrite32(TYPHOON_INTR_NONE, ioaddr + TYPHOON_REG_INTR_ENABLE);
1980
1981 INIT_COMMAND_NO_RESPONSE(&xp_cmd, TYPHOON_CMD_RX_DISABLE);
1982 typhoon_issue_command(tp, 1, &xp_cmd, 0, NULL);
1983
1984 /* Wait 1/2 sec for any outstanding transmits to occur
1985 * We'll cleanup after the reset if this times out.
1986 */
1987 for(i = 0; i < TYPHOON_WAIT_TIMEOUT; i++) {
1988 if(indexes->txLoCleared == cpu_to_le32(txLo->lastWrite))
1989 break;
1990 udelay(TYPHOON_UDELAY);
1991 }
1992
1993 if(i == TYPHOON_WAIT_TIMEOUT)
1994 netdev_err(tp->dev, "halt timed out waiting for Tx to complete\n");
1995
1996 INIT_COMMAND_NO_RESPONSE(&xp_cmd, TYPHOON_CMD_TX_DISABLE);
1997 typhoon_issue_command(tp, 1, &xp_cmd, 0, NULL);
1998
1999 /* save the statistics so when we bring the interface up again,
2000 * the values reported to userspace are correct.
2001 */
2002 tp->card_state = Sleeping;
2003 smp_wmb();
2004 typhoon_do_get_stats(tp);
2005 memcpy(&tp->stats_saved, &tp->stats, sizeof(struct net_device_stats));
2006
2007 INIT_COMMAND_NO_RESPONSE(&xp_cmd, TYPHOON_CMD_HALT);
2008 typhoon_issue_command(tp, 1, &xp_cmd, 0, NULL);
2009
2010 if(typhoon_wait_status(ioaddr, TYPHOON_STATUS_HALTED) < 0)
2011 netdev_err(tp->dev, "timed out waiting for 3XP to halt\n");
2012
2013 if(typhoon_reset(ioaddr, wait_type) < 0) {
2014 netdev_err(tp->dev, "unable to reset 3XP\n");
2015 return -ETIMEDOUT;
2016 }
2017
2018 /* cleanup any outstanding Tx packets */
2019 if(indexes->txLoCleared != cpu_to_le32(txLo->lastWrite)) {
2020 indexes->txLoCleared = cpu_to_le32(txLo->lastWrite);
2021 typhoon_clean_tx(tp, &tp->txLoRing, &indexes->txLoCleared);
2022 }
2023
2024 return 0;
2025 }
2026
2027 static void
2028 typhoon_tx_timeout(struct net_device *dev)
2029 {
2030 struct typhoon *tp = netdev_priv(dev);
2031
2032 if(typhoon_reset(tp->ioaddr, WaitNoSleep) < 0) {
2033 netdev_warn(dev, "could not reset in tx timeout\n");
2034 goto truly_dead;
2035 }
2036
2037 /* If we ever start using the Hi ring, it will need cleaning too */
2038 typhoon_clean_tx(tp, &tp->txLoRing, &tp->indexes->txLoCleared);
2039 typhoon_free_rx_rings(tp);
2040
2041 if(typhoon_start_runtime(tp) < 0) {
2042 netdev_err(dev, "could not start runtime in tx timeout\n");
2043 goto truly_dead;
2044 }
2045
2046 netif_wake_queue(dev);
2047 return;
2048
2049 truly_dead:
2050 /* Reset the hardware, and turn off carrier to avoid more timeouts */
2051 typhoon_reset(tp->ioaddr, NoWait);
2052 netif_carrier_off(dev);
2053 }
2054
2055 static int
2056 typhoon_open(struct net_device *dev)
2057 {
2058 struct typhoon *tp = netdev_priv(dev);
2059 int err;
2060
2061 err = typhoon_request_firmware(tp);
2062 if (err)
2063 goto out;
2064
2065 err = typhoon_wakeup(tp, WaitSleep);
2066 if(err < 0) {
2067 netdev_err(dev, "unable to wakeup device\n");
2068 goto out_sleep;
2069 }
2070
2071 err = request_irq(dev->irq, typhoon_interrupt, IRQF_SHARED,
2072 dev->name, dev);
2073 if(err < 0)
2074 goto out_sleep;
2075
2076 napi_enable(&tp->napi);
2077
2078 err = typhoon_start_runtime(tp);
2079 if(err < 0) {
2080 napi_disable(&tp->napi);
2081 goto out_irq;
2082 }
2083
2084 netif_start_queue(dev);
2085 return 0;
2086
2087 out_irq:
2088 free_irq(dev->irq, dev);
2089
2090 out_sleep:
2091 if(typhoon_boot_3XP(tp, TYPHOON_STATUS_WAITING_FOR_HOST) < 0) {
2092 netdev_err(dev, "unable to reboot into sleep img\n");
2093 typhoon_reset(tp->ioaddr, NoWait);
2094 goto out;
2095 }
2096
2097 if(typhoon_sleep(tp, PCI_D3hot, 0) < 0)
2098 netdev_err(dev, "unable to go back to sleep\n");
2099
2100 out:
2101 return err;
2102 }
2103
2104 static int
2105 typhoon_close(struct net_device *dev)
2106 {
2107 struct typhoon *tp = netdev_priv(dev);
2108
2109 netif_stop_queue(dev);
2110 napi_disable(&tp->napi);
2111
2112 if(typhoon_stop_runtime(tp, WaitSleep) < 0)
2113 netdev_err(dev, "unable to stop runtime\n");
2114
2115 /* Make sure there is no irq handler running on a different CPU. */
2116 free_irq(dev->irq, dev);
2117
2118 typhoon_free_rx_rings(tp);
2119 typhoon_init_rings(tp);
2120
2121 if(typhoon_boot_3XP(tp, TYPHOON_STATUS_WAITING_FOR_HOST) < 0)
2122 netdev_err(dev, "unable to boot sleep image\n");
2123
2124 if(typhoon_sleep(tp, PCI_D3hot, 0) < 0)
2125 netdev_err(dev, "unable to put card to sleep\n");
2126
2127 return 0;
2128 }
2129
2130 #ifdef CONFIG_PM
2131 static int
2132 typhoon_resume(struct pci_dev *pdev)
2133 {
2134 struct net_device *dev = pci_get_drvdata(pdev);
2135 struct typhoon *tp = netdev_priv(dev);
2136
2137 /* If we're down, resume when we are upped.
2138 */
2139 if(!netif_running(dev))
2140 return 0;
2141
2142 if(typhoon_wakeup(tp, WaitNoSleep) < 0) {
2143 netdev_err(dev, "critical: could not wake up in resume\n");
2144 goto reset;
2145 }
2146
2147 if(typhoon_start_runtime(tp) < 0) {
2148 netdev_err(dev, "critical: could not start runtime in resume\n");
2149 goto reset;
2150 }
2151
2152 netif_device_attach(dev);
2153 return 0;
2154
2155 reset:
2156 typhoon_reset(tp->ioaddr, NoWait);
2157 return -EBUSY;
2158 }
2159
2160 static int
2161 typhoon_suspend(struct pci_dev *pdev, pm_message_t state)
2162 {
2163 struct net_device *dev = pci_get_drvdata(pdev);
2164 struct typhoon *tp = netdev_priv(dev);
2165 struct cmd_desc xp_cmd;
2166
2167 /* If we're down, we're already suspended.
2168 */
2169 if(!netif_running(dev))
2170 return 0;
2171
2172 /* TYPHOON_OFFLOAD_VLAN is always on now, so this doesn't work */
2173 if(tp->wol_events & TYPHOON_WAKE_MAGIC_PKT)
2174 netdev_warn(dev, "cannot do WAKE_MAGIC with VLAN offloading\n");
2175
2176 netif_device_detach(dev);
2177
2178 if(typhoon_stop_runtime(tp, WaitNoSleep) < 0) {
2179 netdev_err(dev, "unable to stop runtime\n");
2180 goto need_resume;
2181 }
2182
2183 typhoon_free_rx_rings(tp);
2184 typhoon_init_rings(tp);
2185
2186 if(typhoon_boot_3XP(tp, TYPHOON_STATUS_WAITING_FOR_HOST) < 0) {
2187 netdev_err(dev, "unable to boot sleep image\n");
2188 goto need_resume;
2189 }
2190
2191 INIT_COMMAND_NO_RESPONSE(&xp_cmd, TYPHOON_CMD_SET_MAC_ADDRESS);
2192 xp_cmd.parm1 = cpu_to_le16(ntohs(*(__be16 *)&dev->dev_addr[0]));
2193 xp_cmd.parm2 = cpu_to_le32(ntohl(*(__be32 *)&dev->dev_addr[2]));
2194 if(typhoon_issue_command(tp, 1, &xp_cmd, 0, NULL) < 0) {
2195 netdev_err(dev, "unable to set mac address in suspend\n");
2196 goto need_resume;
2197 }
2198
2199 INIT_COMMAND_NO_RESPONSE(&xp_cmd, TYPHOON_CMD_SET_RX_FILTER);
2200 xp_cmd.parm1 = TYPHOON_RX_FILTER_DIRECTED | TYPHOON_RX_FILTER_BROADCAST;
2201 if(typhoon_issue_command(tp, 1, &xp_cmd, 0, NULL) < 0) {
2202 netdev_err(dev, "unable to set rx filter in suspend\n");
2203 goto need_resume;
2204 }
2205
2206 if(typhoon_sleep(tp, pci_choose_state(pdev, state), tp->wol_events) < 0) {
2207 netdev_err(dev, "unable to put card to sleep\n");
2208 goto need_resume;
2209 }
2210
2211 return 0;
2212
2213 need_resume:
2214 typhoon_resume(pdev);
2215 return -EBUSY;
2216 }
2217 #endif
2218
2219 static int __devinit
2220 typhoon_test_mmio(struct pci_dev *pdev)
2221 {
2222 void __iomem *ioaddr = pci_iomap(pdev, 1, 128);
2223 int mode = 0;
2224 u32 val;
2225
2226 if(!ioaddr)
2227 goto out;
2228
2229 if(ioread32(ioaddr + TYPHOON_REG_STATUS) !=
2230 TYPHOON_STATUS_WAITING_FOR_HOST)
2231 goto out_unmap;
2232
2233 iowrite32(TYPHOON_INTR_ALL, ioaddr + TYPHOON_REG_INTR_MASK);
2234 iowrite32(TYPHOON_INTR_ALL, ioaddr + TYPHOON_REG_INTR_STATUS);
2235 iowrite32(TYPHOON_INTR_ALL, ioaddr + TYPHOON_REG_INTR_ENABLE);
2236
2237 /* Ok, see if we can change our interrupt status register by
2238 * sending ourselves an interrupt. If so, then MMIO works.
2239 * The 50usec delay is arbitrary -- it could probably be smaller.
2240 */
2241 val = ioread32(ioaddr + TYPHOON_REG_INTR_STATUS);
2242 if((val & TYPHOON_INTR_SELF) == 0) {
2243 iowrite32(1, ioaddr + TYPHOON_REG_SELF_INTERRUPT);
2244 ioread32(ioaddr + TYPHOON_REG_INTR_STATUS);
2245 udelay(50);
2246 val = ioread32(ioaddr + TYPHOON_REG_INTR_STATUS);
2247 if(val & TYPHOON_INTR_SELF)
2248 mode = 1;
2249 }
2250
2251 iowrite32(TYPHOON_INTR_ALL, ioaddr + TYPHOON_REG_INTR_MASK);
2252 iowrite32(TYPHOON_INTR_ALL, ioaddr + TYPHOON_REG_INTR_STATUS);
2253 iowrite32(TYPHOON_INTR_NONE, ioaddr + TYPHOON_REG_INTR_ENABLE);
2254 ioread32(ioaddr + TYPHOON_REG_INTR_STATUS);
2255
2256 out_unmap:
2257 pci_iounmap(pdev, ioaddr);
2258
2259 out:
2260 if(!mode)
2261 pr_info("%s: falling back to port IO\n", pci_name(pdev));
2262 return mode;
2263 }
2264
2265 static const struct net_device_ops typhoon_netdev_ops = {
2266 .ndo_open = typhoon_open,
2267 .ndo_stop = typhoon_close,
2268 .ndo_start_xmit = typhoon_start_tx,
2269 .ndo_set_multicast_list = typhoon_set_rx_mode,
2270 .ndo_tx_timeout = typhoon_tx_timeout,
2271 .ndo_get_stats = typhoon_get_stats,
2272 .ndo_validate_addr = eth_validate_addr,
2273 .ndo_set_mac_address = typhoon_set_mac_address,
2274 .ndo_change_mtu = eth_change_mtu,
2275 };
2276
2277 static int __devinit
2278 typhoon_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
2279 {
2280 struct net_device *dev;
2281 struct typhoon *tp;
2282 int card_id = (int) ent->driver_data;
2283 void __iomem *ioaddr;
2284 void *shared;
2285 dma_addr_t shared_dma;
2286 struct cmd_desc xp_cmd;
2287 struct resp_desc xp_resp[3];
2288 int err = 0;
2289 const char *err_msg;
2290
2291 dev = alloc_etherdev(sizeof(*tp));
2292 if(dev == NULL) {
2293 err_msg = "unable to alloc new net device";
2294 err = -ENOMEM;
2295 goto error_out;
2296 }
2297 SET_NETDEV_DEV(dev, &pdev->dev);
2298
2299 err = pci_enable_device(pdev);
2300 if(err < 0) {
2301 err_msg = "unable to enable device";
2302 goto error_out_dev;
2303 }
2304
2305 err = pci_set_mwi(pdev);
2306 if(err < 0) {
2307 err_msg = "unable to set MWI";
2308 goto error_out_disable;
2309 }
2310
2311 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
2312 if(err < 0) {
2313 err_msg = "No usable DMA configuration";
2314 goto error_out_mwi;
2315 }
2316
2317 /* sanity checks on IO and MMIO BARs
2318 */
2319 if(!(pci_resource_flags(pdev, 0) & IORESOURCE_IO)) {
2320 err_msg = "region #1 not a PCI IO resource, aborting";
2321 err = -ENODEV;
2322 goto error_out_mwi;
2323 }
2324 if(pci_resource_len(pdev, 0) < 128) {
2325 err_msg = "Invalid PCI IO region size, aborting";
2326 err = -ENODEV;
2327 goto error_out_mwi;
2328 }
2329 if(!(pci_resource_flags(pdev, 1) & IORESOURCE_MEM)) {
2330 err_msg = "region #1 not a PCI MMIO resource, aborting";
2331 err = -ENODEV;
2332 goto error_out_mwi;
2333 }
2334 if(pci_resource_len(pdev, 1) < 128) {
2335 err_msg = "Invalid PCI MMIO region size, aborting";
2336 err = -ENODEV;
2337 goto error_out_mwi;
2338 }
2339
2340 err = pci_request_regions(pdev, KBUILD_MODNAME);
2341 if(err < 0) {
2342 err_msg = "could not request regions";
2343 goto error_out_mwi;
2344 }
2345
2346 /* map our registers
2347 */
2348 if(use_mmio != 0 && use_mmio != 1)
2349 use_mmio = typhoon_test_mmio(pdev);
2350
2351 ioaddr = pci_iomap(pdev, use_mmio, 128);
2352 if (!ioaddr) {
2353 err_msg = "cannot remap registers, aborting";
2354 err = -EIO;
2355 goto error_out_regions;
2356 }
2357
2358 /* allocate pci dma space for rx and tx descriptor rings
2359 */
2360 shared = pci_alloc_consistent(pdev, sizeof(struct typhoon_shared),
2361 &shared_dma);
2362 if(!shared) {
2363 err_msg = "could not allocate DMA memory";
2364 err = -ENOMEM;
2365 goto error_out_remap;
2366 }
2367
2368 dev->irq = pdev->irq;
2369 tp = netdev_priv(dev);
2370 tp->shared = shared;
2371 tp->shared_dma = shared_dma;
2372 tp->pdev = pdev;
2373 tp->tx_pdev = pdev;
2374 tp->ioaddr = ioaddr;
2375 tp->tx_ioaddr = ioaddr;
2376 tp->dev = dev;
2377
2378 /* Init sequence:
2379 * 1) Reset the adapter to clear any bad juju
2380 * 2) Reload the sleep image
2381 * 3) Boot the sleep image
2382 * 4) Get the hardware address.
2383 * 5) Put the card to sleep.
2384 */
2385 if (typhoon_reset(ioaddr, WaitSleep) < 0) {
2386 err_msg = "could not reset 3XP";
2387 err = -EIO;
2388 goto error_out_dma;
2389 }
2390
2391 /* Now that we've reset the 3XP and are sure it's not going to
2392 * write all over memory, enable bus mastering, and save our
2393 * state for resuming after a suspend.
2394 */
2395 pci_set_master(pdev);
2396 pci_save_state(pdev);
2397
2398 typhoon_init_interface(tp);
2399 typhoon_init_rings(tp);
2400
2401 if(typhoon_boot_3XP(tp, TYPHOON_STATUS_WAITING_FOR_HOST) < 0) {
2402 err_msg = "cannot boot 3XP sleep image";
2403 err = -EIO;
2404 goto error_out_reset;
2405 }
2406
2407 INIT_COMMAND_WITH_RESPONSE(&xp_cmd, TYPHOON_CMD_READ_MAC_ADDRESS);
2408 if(typhoon_issue_command(tp, 1, &xp_cmd, 1, xp_resp) < 0) {
2409 err_msg = "cannot read MAC address";
2410 err = -EIO;
2411 goto error_out_reset;
2412 }
2413
2414 *(__be16 *)&dev->dev_addr[0] = htons(le16_to_cpu(xp_resp[0].parm1));
2415 *(__be32 *)&dev->dev_addr[2] = htonl(le32_to_cpu(xp_resp[0].parm2));
2416
2417 if(!is_valid_ether_addr(dev->dev_addr)) {
2418 err_msg = "Could not obtain valid ethernet address, aborting";
2419 goto error_out_reset;
2420 }
2421
2422 /* Read the Sleep Image version last, so the response is valid
2423 * later when we print out the version reported.
2424 */
2425 INIT_COMMAND_WITH_RESPONSE(&xp_cmd, TYPHOON_CMD_READ_VERSIONS);
2426 if(typhoon_issue_command(tp, 1, &xp_cmd, 3, xp_resp) < 0) {
2427 err_msg = "Could not get Sleep Image version";
2428 goto error_out_reset;
2429 }
2430
2431 tp->capabilities = typhoon_card_info[card_id].capabilities;
2432 tp->xcvr_select = TYPHOON_XCVR_AUTONEG;
2433
2434 /* Typhoon 1.0 Sleep Images return one response descriptor to the
2435 * READ_VERSIONS command. Those versions are OK after waking up
2436 * from sleep without needing a reset. Typhoon 1.1+ Sleep Images
2437 * seem to need a little extra help to get started. Since we don't
2438 * know how to nudge it along, just kick it.
2439 */
2440 if(xp_resp[0].numDesc != 0)
2441 tp->capabilities |= TYPHOON_WAKEUP_NEEDS_RESET;
2442
2443 if(typhoon_sleep(tp, PCI_D3hot, 0) < 0) {
2444 err_msg = "cannot put adapter to sleep";
2445 err = -EIO;
2446 goto error_out_reset;
2447 }
2448
2449 /* The chip-specific entries in the device structure. */
2450 dev->netdev_ops = &typhoon_netdev_ops;
2451 netif_napi_add(dev, &tp->napi, typhoon_poll, 16);
2452 dev->watchdog_timeo = TX_TIMEOUT;
2453
2454 SET_ETHTOOL_OPS(dev, &typhoon_ethtool_ops);
2455
2456 /* We can handle scatter gather, up to 16 entries, and
2457 * we can do IP checksumming (only version 4, doh...)
2458 *
2459 * There's no way to turn off the RX VLAN offloading and stripping
2460 * on the current 3XP firmware -- it does not respect the offload
2461 * settings -- so we only allow the user to toggle the TX processing.
2462 */
2463 dev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO |
2464 NETIF_F_HW_VLAN_TX;
2465 dev->features = dev->hw_features |
2466 NETIF_F_HW_VLAN_RX | NETIF_F_RXCSUM;
2467
2468 if(register_netdev(dev) < 0) {
2469 err_msg = "unable to register netdev";
2470 goto error_out_reset;
2471 }
2472
2473 pci_set_drvdata(pdev, dev);
2474
2475 netdev_info(dev, "%s at %s 0x%llx, %pM\n",
2476 typhoon_card_info[card_id].name,
2477 use_mmio ? "MMIO" : "IO",
2478 (unsigned long long)pci_resource_start(pdev, use_mmio),
2479 dev->dev_addr);
2480
2481 /* xp_resp still contains the response to the READ_VERSIONS command.
2482 * For debugging, let the user know what version he has.
2483 */
2484 if(xp_resp[0].numDesc == 0) {
2485 /* This is the Typhoon 1.0 type Sleep Image, last 16 bits
2486 * of version is Month/Day of build.
2487 */
2488 u16 monthday = le32_to_cpu(xp_resp[0].parm2) & 0xffff;
2489 netdev_info(dev, "Typhoon 1.0 Sleep Image built %02u/%02u/2000\n",
2490 monthday >> 8, monthday & 0xff);
2491 } else if(xp_resp[0].numDesc == 2) {
2492 /* This is the Typhoon 1.1+ type Sleep Image
2493 */
2494 u32 sleep_ver = le32_to_cpu(xp_resp[0].parm2);
2495 u8 *ver_string = (u8 *) &xp_resp[1];
2496 ver_string[25] = 0;
2497 netdev_info(dev, "Typhoon 1.1+ Sleep Image version %02x.%03x.%03x %s\n",
2498 sleep_ver >> 24, (sleep_ver >> 12) & 0xfff,
2499 sleep_ver & 0xfff, ver_string);
2500 } else {
2501 netdev_warn(dev, "Unknown Sleep Image version (%u:%04x)\n",
2502 xp_resp[0].numDesc, le32_to_cpu(xp_resp[0].parm2));
2503 }
2504
2505 return 0;
2506
2507 error_out_reset:
2508 typhoon_reset(ioaddr, NoWait);
2509
2510 error_out_dma:
2511 pci_free_consistent(pdev, sizeof(struct typhoon_shared),
2512 shared, shared_dma);
2513 error_out_remap:
2514 pci_iounmap(pdev, ioaddr);
2515 error_out_regions:
2516 pci_release_regions(pdev);
2517 error_out_mwi:
2518 pci_clear_mwi(pdev);
2519 error_out_disable:
2520 pci_disable_device(pdev);
2521 error_out_dev:
2522 free_netdev(dev);
2523 error_out:
2524 pr_err("%s: %s\n", pci_name(pdev), err_msg);
2525 return err;
2526 }
2527
2528 static void __devexit
2529 typhoon_remove_one(struct pci_dev *pdev)
2530 {
2531 struct net_device *dev = pci_get_drvdata(pdev);
2532 struct typhoon *tp = netdev_priv(dev);
2533
2534 unregister_netdev(dev);
2535 pci_set_power_state(pdev, PCI_D0);
2536 pci_restore_state(pdev);
2537 typhoon_reset(tp->ioaddr, NoWait);
2538 pci_iounmap(pdev, tp->ioaddr);
2539 pci_free_consistent(pdev, sizeof(struct typhoon_shared),
2540 tp->shared, tp->shared_dma);
2541 pci_release_regions(pdev);
2542 pci_clear_mwi(pdev);
2543 pci_disable_device(pdev);
2544 pci_set_drvdata(pdev, NULL);
2545 free_netdev(dev);
2546 }
2547
2548 static struct pci_driver typhoon_driver = {
2549 .name = KBUILD_MODNAME,
2550 .id_table = typhoon_pci_tbl,
2551 .probe = typhoon_init_one,
2552 .remove = __devexit_p(typhoon_remove_one),
2553 #ifdef CONFIG_PM
2554 .suspend = typhoon_suspend,
2555 .resume = typhoon_resume,
2556 #endif
2557 };
2558
2559 static int __init
2560 typhoon_init(void)
2561 {
2562 return pci_register_driver(&typhoon_driver);
2563 }
2564
2565 static void __exit
2566 typhoon_cleanup(void)
2567 {
2568 if (typhoon_fw)
2569 release_firmware(typhoon_fw);
2570 pci_unregister_driver(&typhoon_driver);
2571 }
2572
2573 module_init(typhoon_init);
2574 module_exit(typhoon_cleanup);
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