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Merge git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus
[wrt350n-kernel.git] / drivers / net / typhoon.c
blob333961bb7873973df7c75e5870aaee1f458ec47f
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 *) 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
37 TODO:
38 *) Doesn't do IPSEC offloading. Yet. Keep yer pants on, it's coming.
39 *) Add more support for ethtool (especially for NIC stats)
40 *) Allow disabling of RX checksum offloading
41 *) Fix MAC changing to work while the interface is up
42 (Need to put commands on the TX ring, which changes
43 the locking)
44 *) Add in FCS to {rx,tx}_bytes, since the hardware doesn't. See
45 http://oss.sgi.com/cgi-bin/mesg.cgi?a=netdev&i=20031215152211.7003fe8e.rddunlap%40osdl.org
46 */
47
48 /* Set the copy breakpoint for the copy-only-tiny-frames scheme.
49 * Setting to > 1518 effectively disables this feature.
50 */
51 static int rx_copybreak = 200;
52
53 /* Should we use MMIO or Port IO?
54 * 0: Port IO
55 * 1: MMIO
56 * 2: Try MMIO, fallback to Port IO
57 */
58 static unsigned int use_mmio = 2;
59
60 /* end user-configurable values */
61
62 /* Maximum number of multicast addresses to filter (vs. rx-all-multicast).
63 */
64 static const int multicast_filter_limit = 32;
65
66 /* Operational parameters that are set at compile time. */
67
68 /* Keep the ring sizes a power of two for compile efficiency.
69 * The compiler will convert <unsigned>'%'<2^N> into a bit mask.
70 * Making the Tx ring too large decreases the effectiveness of channel
71 * bonding and packet priority.
72 * There are no ill effects from too-large receive rings.
73 *
74 * We don't currently use the Hi Tx ring so, don't make it very big.
75 *
76 * Beware that if we start using the Hi Tx ring, we will need to change
77 * typhoon_num_free_tx() and typhoon_tx_complete() to account for that.
78 */
79 #define TXHI_ENTRIES 2
80 #define TXLO_ENTRIES 128
81 #define RX_ENTRIES 32
82 #define COMMAND_ENTRIES 16
83 #define RESPONSE_ENTRIES 32
84
85 #define COMMAND_RING_SIZE (COMMAND_ENTRIES * sizeof(struct cmd_desc))
86 #define RESPONSE_RING_SIZE (RESPONSE_ENTRIES * sizeof(struct resp_desc))
87
88 /* The 3XP will preload and remove 64 entries from the free buffer
89 * list, and we need one entry to keep the ring from wrapping, so
90 * to keep this a power of two, we use 128 entries.
91 */
92 #define RXFREE_ENTRIES 128
93 #define RXENT_ENTRIES (RXFREE_ENTRIES - 1)
94
95 /* Operational parameters that usually are not changed. */
96
97 /* Time in jiffies before concluding the transmitter is hung. */
98 #define TX_TIMEOUT (2*HZ)
99
100 #define PKT_BUF_SZ 1536
101
102 #define DRV_MODULE_NAME "typhoon"
103 #define DRV_MODULE_VERSION "1.5.8"
104 #define DRV_MODULE_RELDATE "06/11/09"
105 #define PFX DRV_MODULE_NAME ": "
106 #define ERR_PFX KERN_ERR PFX
107
108 #include <linux/module.h>
109 #include <linux/kernel.h>
110 #include <linux/string.h>
111 #include <linux/timer.h>
112 #include <linux/errno.h>
113 #include <linux/ioport.h>
114 #include <linux/slab.h>
115 #include <linux/interrupt.h>
116 #include <linux/pci.h>
117 #include <linux/netdevice.h>
118 #include <linux/etherdevice.h>
119 #include <linux/skbuff.h>
120 #include <linux/mm.h>
121 #include <linux/init.h>
122 #include <linux/delay.h>
123 #include <linux/ethtool.h>
124 #include <linux/if_vlan.h>
125 #include <linux/crc32.h>
126 #include <linux/bitops.h>
127 #include <asm/processor.h>
128 #include <asm/io.h>
129 #include <asm/uaccess.h>
130 #include <linux/in6.h>
131 #include <linux/version.h>
132 #include <linux/dma-mapping.h>
133
134 #include "typhoon.h"
135 #include "typhoon-firmware.h"
136
137 static char version[] __devinitdata =
138 "typhoon.c: version " DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")\n";
139
140 MODULE_AUTHOR("David Dillow <dave@thedillows.org>");
141 MODULE_VERSION(DRV_MODULE_VERSION);
142 MODULE_LICENSE("GPL");
143 MODULE_DESCRIPTION("3Com Typhoon Family (3C990, 3CR990, and variants)");
144 MODULE_PARM_DESC(rx_copybreak, "Packets smaller than this are copied and "
145 "the buffer given back to the NIC. Default "
146 "is 200.");
147 MODULE_PARM_DESC(use_mmio, "Use MMIO (1) or PIO(0) to access the NIC. "
148 "Default is to try MMIO and fallback to PIO.");
149 module_param(rx_copybreak, int, 0);
150 module_param(use_mmio, int, 0);
151
152 #if defined(NETIF_F_TSO) && MAX_SKB_FRAGS > 32
153 #warning Typhoon only supports 32 entries in its SG list for TSO, disabling TSO
154 #undef NETIF_F_TSO
155 #endif
156
157 #if TXLO_ENTRIES <= (2 * MAX_SKB_FRAGS)
158 #error TX ring too small!
159 #endif
160
161 struct typhoon_card_info {
162 char *name;
163 int capabilities;
164 };
165
166 #define TYPHOON_CRYPTO_NONE 0x00
167 #define TYPHOON_CRYPTO_DES 0x01
168 #define TYPHOON_CRYPTO_3DES 0x02
169 #define TYPHOON_CRYPTO_VARIABLE 0x04
170 #define TYPHOON_FIBER 0x08
171 #define TYPHOON_WAKEUP_NEEDS_RESET 0x10
172
173 enum typhoon_cards {
174 TYPHOON_TX = 0, TYPHOON_TX95, TYPHOON_TX97, TYPHOON_SVR,
175 TYPHOON_SVR95, TYPHOON_SVR97, TYPHOON_TXM, TYPHOON_BSVR,
176 TYPHOON_FX95, TYPHOON_FX97, TYPHOON_FX95SVR, TYPHOON_FX97SVR,
177 TYPHOON_FXM,
178 };
179
180 /* directly indexed by enum typhoon_cards, above */
181 static struct typhoon_card_info typhoon_card_info[] __devinitdata = {
182 { "3Com Typhoon (3C990-TX)",
183 TYPHOON_CRYPTO_NONE},
184 { "3Com Typhoon (3CR990-TX-95)",
185 TYPHOON_CRYPTO_DES},
186 { "3Com Typhoon (3CR990-TX-97)",
187 TYPHOON_CRYPTO_DES | TYPHOON_CRYPTO_3DES},
188 { "3Com Typhoon (3C990SVR)",
189 TYPHOON_CRYPTO_NONE},
190 { "3Com Typhoon (3CR990SVR95)",
191 TYPHOON_CRYPTO_DES},
192 { "3Com Typhoon (3CR990SVR97)",
193 TYPHOON_CRYPTO_DES | TYPHOON_CRYPTO_3DES},
194 { "3Com Typhoon2 (3C990B-TX-M)",
195 TYPHOON_CRYPTO_VARIABLE},
196 { "3Com Typhoon2 (3C990BSVR)",
197 TYPHOON_CRYPTO_VARIABLE},
198 { "3Com Typhoon (3CR990-FX-95)",
199 TYPHOON_CRYPTO_DES | TYPHOON_FIBER},
200 { "3Com Typhoon (3CR990-FX-97)",
201 TYPHOON_CRYPTO_DES | TYPHOON_CRYPTO_3DES | TYPHOON_FIBER},
202 { "3Com Typhoon (3CR990-FX-95 Server)",
203 TYPHOON_CRYPTO_DES | TYPHOON_FIBER},
204 { "3Com Typhoon (3CR990-FX-97 Server)",
205 TYPHOON_CRYPTO_DES | TYPHOON_CRYPTO_3DES | TYPHOON_FIBER},
206 { "3Com Typhoon2 (3C990B-FX-97)",
207 TYPHOON_CRYPTO_VARIABLE | TYPHOON_FIBER},
208 };
209
210 /* Notes on the new subsystem numbering scheme:
211 * bits 0-1 indicate crypto capabilities: (0) variable, (1) DES, or (2) 3DES
212 * bit 4 indicates if this card has secured firmware (we don't support it)
213 * bit 8 indicates if this is a (0) copper or (1) fiber card
214 * bits 12-16 indicate card type: (0) client and (1) server
215 */
216 static struct pci_device_id typhoon_pci_tbl[] = {
217 { PCI_VENDOR_ID_3COM, PCI_DEVICE_ID_3COM_3CR990,
218 PCI_ANY_ID, PCI_ANY_ID, 0, 0,TYPHOON_TX },
219 { PCI_VENDOR_ID_3COM, PCI_DEVICE_ID_3COM_3CR990_TX_95,
220 PCI_ANY_ID, PCI_ANY_ID, 0, 0, TYPHOON_TX95 },
221 { PCI_VENDOR_ID_3COM, PCI_DEVICE_ID_3COM_3CR990_TX_97,
222 PCI_ANY_ID, PCI_ANY_ID, 0, 0, TYPHOON_TX97 },
223 { PCI_VENDOR_ID_3COM, PCI_DEVICE_ID_3COM_3CR990B,
224 PCI_ANY_ID, 0x1000, 0, 0, TYPHOON_TXM },
225 { PCI_VENDOR_ID_3COM, PCI_DEVICE_ID_3COM_3CR990B,
226 PCI_ANY_ID, 0x1102, 0, 0, TYPHOON_FXM },
227 { PCI_VENDOR_ID_3COM, PCI_DEVICE_ID_3COM_3CR990B,
228 PCI_ANY_ID, 0x2000, 0, 0, TYPHOON_BSVR },
229 { PCI_VENDOR_ID_3COM, PCI_DEVICE_ID_3COM_3CR990_FX,
230 PCI_ANY_ID, 0x1101, 0, 0, TYPHOON_FX95 },
231 { PCI_VENDOR_ID_3COM, PCI_DEVICE_ID_3COM_3CR990_FX,
232 PCI_ANY_ID, 0x1102, 0, 0, TYPHOON_FX97 },
233 { PCI_VENDOR_ID_3COM, PCI_DEVICE_ID_3COM_3CR990_FX,
234 PCI_ANY_ID, 0x2101, 0, 0, TYPHOON_FX95SVR },
235 { PCI_VENDOR_ID_3COM, PCI_DEVICE_ID_3COM_3CR990_FX,
236 PCI_ANY_ID, 0x2102, 0, 0, TYPHOON_FX97SVR },
237 { PCI_VENDOR_ID_3COM, PCI_DEVICE_ID_3COM_3CR990SVR95,
238 PCI_ANY_ID, PCI_ANY_ID, 0, 0, TYPHOON_SVR95 },
239 { PCI_VENDOR_ID_3COM, PCI_DEVICE_ID_3COM_3CR990SVR97,
240 PCI_ANY_ID, PCI_ANY_ID, 0, 0, TYPHOON_SVR97 },
241 { PCI_VENDOR_ID_3COM, PCI_DEVICE_ID_3COM_3CR990SVR,
242 PCI_ANY_ID, PCI_ANY_ID, 0, 0, TYPHOON_SVR },
243 { 0, }
244 };
245 MODULE_DEVICE_TABLE(pci, typhoon_pci_tbl);
246
247 /* Define the shared memory area
248 * Align everything the 3XP will normally be using.
249 * We'll need to move/align txHi if we start using that ring.
250 */
251 #define __3xp_aligned ____cacheline_aligned
252 struct typhoon_shared {
253 struct typhoon_interface iface;
254 struct typhoon_indexes indexes __3xp_aligned;
255 struct tx_desc txLo[TXLO_ENTRIES] __3xp_aligned;
256 struct rx_desc rxLo[RX_ENTRIES] __3xp_aligned;
257 struct rx_desc rxHi[RX_ENTRIES] __3xp_aligned;
258 struct cmd_desc cmd[COMMAND_ENTRIES] __3xp_aligned;
259 struct resp_desc resp[RESPONSE_ENTRIES] __3xp_aligned;
260 struct rx_free rxBuff[RXFREE_ENTRIES] __3xp_aligned;
261 u32 zeroWord;
262 struct tx_desc txHi[TXHI_ENTRIES];
263 } __attribute__ ((packed));
264
265 struct rxbuff_ent {
266 struct sk_buff *skb;
267 dma_addr_t dma_addr;
268 };
269
270 struct typhoon {
271 /* Tx cache line section */
272 struct transmit_ring txLoRing ____cacheline_aligned;
273 struct pci_dev * tx_pdev;
274 void __iomem *tx_ioaddr;
275 u32 txlo_dma_addr;
276
277 /* Irq/Rx cache line section */
278 void __iomem *ioaddr ____cacheline_aligned;
279 struct typhoon_indexes *indexes;
280 u8 awaiting_resp;
281 u8 duplex;
282 u8 speed;
283 u8 card_state;
284 struct basic_ring rxLoRing;
285 struct pci_dev * pdev;
286 struct net_device * dev;
287 struct napi_struct napi;
288 spinlock_t state_lock;
289 struct vlan_group * vlgrp;
290 struct basic_ring rxHiRing;
291 struct basic_ring rxBuffRing;
292 struct rxbuff_ent rxbuffers[RXENT_ENTRIES];
293
294 /* general section */
295 spinlock_t command_lock ____cacheline_aligned;
296 struct basic_ring cmdRing;
297 struct basic_ring respRing;
298 struct net_device_stats stats;
299 struct net_device_stats stats_saved;
300 const char * name;
301 struct typhoon_shared * shared;
302 dma_addr_t shared_dma;
303 __le16 xcvr_select;
304 __le16 wol_events;
305 __le32 offload;
306
307 /* unused stuff (future use) */
308 int capabilities;
309 struct transmit_ring txHiRing;
310 };
311
312 enum completion_wait_values {
313 NoWait = 0, WaitNoSleep, WaitSleep,
314 };
315
316 /* These are the values for the typhoon.card_state variable.
317 * These determine where the statistics will come from in get_stats().
318 * The sleep image does not support the statistics we need.
319 */
320 enum state_values {
321 Sleeping = 0, Running,
322 };
323
324 /* PCI writes are not guaranteed to be posted in order, but outstanding writes
325 * cannot pass a read, so this forces current writes to post.
326 */
327 #define typhoon_post_pci_writes(x) \
328 do { if(likely(use_mmio)) ioread32(x+TYPHOON_REG_HEARTBEAT); } while(0)
329
330 /* We'll wait up to six seconds for a reset, and half a second normally.
331 */
332 #define TYPHOON_UDELAY 50
333 #define TYPHOON_RESET_TIMEOUT_SLEEP (6 * HZ)
334 #define TYPHOON_RESET_TIMEOUT_NOSLEEP ((6 * 1000000) / TYPHOON_UDELAY)
335 #define TYPHOON_WAIT_TIMEOUT ((1000000 / 2) / TYPHOON_UDELAY)
336
337 #define typhoon_synchronize_irq(x) synchronize_irq(x)
338
339 #if defined(NETIF_F_TSO)
340 #define skb_tso_size(x) (skb_shinfo(x)->gso_size)
341 #define TSO_NUM_DESCRIPTORS 2
342 #define TSO_OFFLOAD_ON TYPHOON_OFFLOAD_TCP_SEGMENT
343 #else
344 #define NETIF_F_TSO 0
345 #define skb_tso_size(x) 0
346 #define TSO_NUM_DESCRIPTORS 0
347 #define TSO_OFFLOAD_ON 0
348 #endif
349
350 static inline void
351 typhoon_inc_index(u32 *index, const int count, const int num_entries)
352 {
353 /* Increment a ring index -- we can use this for all rings execept
354 * the Rx rings, as they use different size descriptors
355 * otherwise, everything is the same size as a cmd_desc
356 */
357 *index += count * sizeof(struct cmd_desc);
358 *index %= num_entries * sizeof(struct cmd_desc);
359 }
360
361 static inline void
362 typhoon_inc_cmd_index(u32 *index, const int count)
363 {
364 typhoon_inc_index(index, count, COMMAND_ENTRIES);
365 }
366
367 static inline void
368 typhoon_inc_resp_index(u32 *index, const int count)
369 {
370 typhoon_inc_index(index, count, RESPONSE_ENTRIES);
371 }
372
373 static inline void
374 typhoon_inc_rxfree_index(u32 *index, const int count)
375 {
376 typhoon_inc_index(index, count, RXFREE_ENTRIES);
377 }
378
379 static inline void
380 typhoon_inc_tx_index(u32 *index, const int count)
381 {
382 /* if we start using the Hi Tx ring, this needs updateing */
383 typhoon_inc_index(index, count, TXLO_ENTRIES);
384 }
385
386 static inline void
387 typhoon_inc_rx_index(u32 *index, const int count)
388 {
389 /* sizeof(struct rx_desc) != sizeof(struct cmd_desc) */
390 *index += count * sizeof(struct rx_desc);
391 *index %= RX_ENTRIES * sizeof(struct rx_desc);
392 }
393
394 static int
395 typhoon_reset(void __iomem *ioaddr, int wait_type)
396 {
397 int i, err = 0;
398 int timeout;
399
400 if(wait_type == WaitNoSleep)
401 timeout = TYPHOON_RESET_TIMEOUT_NOSLEEP;
402 else
403 timeout = TYPHOON_RESET_TIMEOUT_SLEEP;
404
405 iowrite32(TYPHOON_INTR_ALL, ioaddr + TYPHOON_REG_INTR_MASK);
406 iowrite32(TYPHOON_INTR_ALL, ioaddr + TYPHOON_REG_INTR_STATUS);
407
408 iowrite32(TYPHOON_RESET_ALL, ioaddr + TYPHOON_REG_SOFT_RESET);
409 typhoon_post_pci_writes(ioaddr);
410 udelay(1);
411 iowrite32(TYPHOON_RESET_NONE, ioaddr + TYPHOON_REG_SOFT_RESET);
412
413 if(wait_type != NoWait) {
414 for(i = 0; i < timeout; i++) {
415 if(ioread32(ioaddr + TYPHOON_REG_STATUS) ==
416 TYPHOON_STATUS_WAITING_FOR_HOST)
417 goto out;
418
419 if(wait_type == WaitSleep)
420 schedule_timeout_uninterruptible(1);
421 else
422 udelay(TYPHOON_UDELAY);
423 }
424
425 err = -ETIMEDOUT;
426 }
427
428 out:
429 iowrite32(TYPHOON_INTR_ALL, ioaddr + TYPHOON_REG_INTR_MASK);
430 iowrite32(TYPHOON_INTR_ALL, ioaddr + TYPHOON_REG_INTR_STATUS);
431
432 /* The 3XP seems to need a little extra time to complete the load
433 * of the sleep image before we can reliably boot it. Failure to
434 * do this occasionally results in a hung adapter after boot in
435 * typhoon_init_one() while trying to read the MAC address or
436 * putting the card to sleep. 3Com's driver waits 5ms, but
437 * that seems to be overkill. However, if we can sleep, we might
438 * as well give it that much time. Otherwise, we'll give it 500us,
439 * which should be enough (I've see it work well at 100us, but still
440 * saw occasional problems.)
441 */
442 if(wait_type == WaitSleep)
443 msleep(5);
444 else
445 udelay(500);
446 return err;
447 }
448
449 static int
450 typhoon_wait_status(void __iomem *ioaddr, u32 wait_value)
451 {
452 int i, err = 0;
453
454 for(i = 0; i < TYPHOON_WAIT_TIMEOUT; i++) {
455 if(ioread32(ioaddr + TYPHOON_REG_STATUS) == wait_value)
456 goto out;
457 udelay(TYPHOON_UDELAY);
458 }
459
460 err = -ETIMEDOUT;
461
462 out:
463 return err;
464 }
465
466 static inline void
467 typhoon_media_status(struct net_device *dev, struct resp_desc *resp)
468 {
469 if(resp->parm1 & TYPHOON_MEDIA_STAT_NO_LINK)
470 netif_carrier_off(dev);
471 else
472 netif_carrier_on(dev);
473 }
474
475 static inline void
476 typhoon_hello(struct typhoon *tp)
477 {
478 struct basic_ring *ring = &tp->cmdRing;
479 struct cmd_desc *cmd;
480
481 /* We only get a hello request if we've not sent anything to the
482 * card in a long while. If the lock is held, then we're in the
483 * process of issuing a command, so we don't need to respond.
484 */
485 if(spin_trylock(&tp->command_lock)) {
486 cmd = (struct cmd_desc *)(ring->ringBase + ring->lastWrite);
487 typhoon_inc_cmd_index(&ring->lastWrite, 1);
488
489 INIT_COMMAND_NO_RESPONSE(cmd, TYPHOON_CMD_HELLO_RESP);
490 smp_wmb();
491 iowrite32(ring->lastWrite, tp->ioaddr + TYPHOON_REG_CMD_READY);
492 spin_unlock(&tp->command_lock);
493 }
494 }
495
496 static int
497 typhoon_process_response(struct typhoon *tp, int resp_size,
498 struct resp_desc *resp_save)
499 {
500 struct typhoon_indexes *indexes = tp->indexes;
501 struct resp_desc *resp;
502 u8 *base = tp->respRing.ringBase;
503 int count, len, wrap_len;
504 u32 cleared;
505 u32 ready;
506
507 cleared = le32_to_cpu(indexes->respCleared);
508 ready = le32_to_cpu(indexes->respReady);
509 while(cleared != ready) {
510 resp = (struct resp_desc *)(base + cleared);
511 count = resp->numDesc + 1;
512 if(resp_save && resp->seqNo) {
513 if(count > resp_size) {
514 resp_save->flags = TYPHOON_RESP_ERROR;
515 goto cleanup;
516 }
517
518 wrap_len = 0;
519 len = count * sizeof(*resp);
520 if(unlikely(cleared + len > RESPONSE_RING_SIZE)) {
521 wrap_len = cleared + len - RESPONSE_RING_SIZE;
522 len = RESPONSE_RING_SIZE - cleared;
523 }
524
525 memcpy(resp_save, resp, len);
526 if(unlikely(wrap_len)) {
527 resp_save += len / sizeof(*resp);
528 memcpy(resp_save, base, wrap_len);
529 }
530
531 resp_save = NULL;
532 } else if(resp->cmd == TYPHOON_CMD_READ_MEDIA_STATUS) {
533 typhoon_media_status(tp->dev, resp);
534 } else if(resp->cmd == TYPHOON_CMD_HELLO_RESP) {
535 typhoon_hello(tp);
536 } else {
537 printk(KERN_ERR "%s: dumping unexpected response "
538 "0x%04x:%d:0x%02x:0x%04x:%08x:%08x\n",
539 tp->name, le16_to_cpu(resp->cmd),
540 resp->numDesc, resp->flags,
541 le16_to_cpu(resp->parm1),
542 le32_to_cpu(resp->parm2),
543 le32_to_cpu(resp->parm3));
544 }
545
546 cleanup:
547 typhoon_inc_resp_index(&cleared, count);
548 }
549
550 indexes->respCleared = cpu_to_le32(cleared);
551 wmb();
552 return (resp_save == NULL);
553 }
554
555 static inline int
556 typhoon_num_free(int lastWrite, int lastRead, int ringSize)
557 {
558 /* this works for all descriptors but rx_desc, as they are a
559 * different size than the cmd_desc -- everyone else is the same
560 */
561 lastWrite /= sizeof(struct cmd_desc);
562 lastRead /= sizeof(struct cmd_desc);
563 return (ringSize + lastRead - lastWrite - 1) % ringSize;
564 }
565
566 static inline int
567 typhoon_num_free_cmd(struct typhoon *tp)
568 {
569 int lastWrite = tp->cmdRing.lastWrite;
570 int cmdCleared = le32_to_cpu(tp->indexes->cmdCleared);
571
572 return typhoon_num_free(lastWrite, cmdCleared, COMMAND_ENTRIES);
573 }
574
575 static inline int
576 typhoon_num_free_resp(struct typhoon *tp)
577 {
578 int respReady = le32_to_cpu(tp->indexes->respReady);
579 int respCleared = le32_to_cpu(tp->indexes->respCleared);
580
581 return typhoon_num_free(respReady, respCleared, RESPONSE_ENTRIES);
582 }
583
584 static inline int
585 typhoon_num_free_tx(struct transmit_ring *ring)
586 {
587 /* if we start using the Hi Tx ring, this needs updating */
588 return typhoon_num_free(ring->lastWrite, ring->lastRead, TXLO_ENTRIES);
589 }
590
591 static int
592 typhoon_issue_command(struct typhoon *tp, int num_cmd, struct cmd_desc *cmd,
593 int num_resp, struct resp_desc *resp)
594 {
595 struct typhoon_indexes *indexes = tp->indexes;
596 struct basic_ring *ring = &tp->cmdRing;
597 struct resp_desc local_resp;
598 int i, err = 0;
599 int got_resp;
600 int freeCmd, freeResp;
601 int len, wrap_len;
602
603 spin_lock(&tp->command_lock);
604
605 freeCmd = typhoon_num_free_cmd(tp);
606 freeResp = typhoon_num_free_resp(tp);
607
608 if(freeCmd < num_cmd || freeResp < num_resp) {
609 printk("%s: no descs for cmd, had (needed) %d (%d) cmd, "
610 "%d (%d) resp\n", tp->name, freeCmd, num_cmd,
611 freeResp, num_resp);
612 err = -ENOMEM;
613 goto out;
614 }
615
616 if(cmd->flags & TYPHOON_CMD_RESPOND) {
617 /* If we're expecting a response, but the caller hasn't given
618 * us a place to put it, we'll provide one.
619 */
620 tp->awaiting_resp = 1;
621 if(resp == NULL) {
622 resp = &local_resp;
623 num_resp = 1;
624 }
625 }
626
627 wrap_len = 0;
628 len = num_cmd * sizeof(*cmd);
629 if(unlikely(ring->lastWrite + len > COMMAND_RING_SIZE)) {
630 wrap_len = ring->lastWrite + len - COMMAND_RING_SIZE;
631 len = COMMAND_RING_SIZE - ring->lastWrite;
632 }
633
634 memcpy(ring->ringBase + ring->lastWrite, cmd, len);
635 if(unlikely(wrap_len)) {
636 struct cmd_desc *wrap_ptr = cmd;
637 wrap_ptr += len / sizeof(*cmd);
638 memcpy(ring->ringBase, wrap_ptr, wrap_len);
639 }
640
641 typhoon_inc_cmd_index(&ring->lastWrite, num_cmd);
642
643 /* "I feel a presence... another warrior is on the mesa."
644 */
645 wmb();
646 iowrite32(ring->lastWrite, tp->ioaddr + TYPHOON_REG_CMD_READY);
647 typhoon_post_pci_writes(tp->ioaddr);
648
649 if((cmd->flags & TYPHOON_CMD_RESPOND) == 0)
650 goto out;
651
652 /* Ugh. We'll be here about 8ms, spinning our thumbs, unable to
653 * preempt or do anything other than take interrupts. So, don't
654 * wait for a response unless you have to.
655 *
656 * I've thought about trying to sleep here, but we're called
657 * from many contexts that don't allow that. Also, given the way
658 * 3Com has implemented irq coalescing, we would likely timeout --
659 * this has been observed in real life!
660 *
661 * The big killer is we have to wait to get stats from the card,
662 * though we could go to a periodic refresh of those if we don't
663 * mind them getting somewhat stale. The rest of the waiting
664 * commands occur during open/close/suspend/resume, so they aren't
665 * time critical. Creating SAs in the future will also have to
666 * wait here.
667 */
668 got_resp = 0;
669 for(i = 0; i < TYPHOON_WAIT_TIMEOUT && !got_resp; i++) {
670 if(indexes->respCleared != indexes->respReady)
671 got_resp = typhoon_process_response(tp, num_resp,
672 resp);
673 udelay(TYPHOON_UDELAY);
674 }
675
676 if(!got_resp) {
677 err = -ETIMEDOUT;
678 goto out;
679 }
680
681 /* Collect the error response even if we don't care about the
682 * rest of the response
683 */
684 if(resp->flags & TYPHOON_RESP_ERROR)
685 err = -EIO;
686
687 out:
688 if(tp->awaiting_resp) {
689 tp->awaiting_resp = 0;
690 smp_wmb();
691
692 /* Ugh. If a response was added to the ring between
693 * the call to typhoon_process_response() and the clearing
694 * of tp->awaiting_resp, we could have missed the interrupt
695 * and it could hang in the ring an indeterminate amount of
696 * time. So, check for it, and interrupt ourselves if this
697 * is the case.
698 */
699 if(indexes->respCleared != indexes->respReady)
700 iowrite32(1, tp->ioaddr + TYPHOON_REG_SELF_INTERRUPT);
701 }
702
703 spin_unlock(&tp->command_lock);
704 return err;
705 }
706
707 static void
708 typhoon_vlan_rx_register(struct net_device *dev, struct vlan_group *grp)
709 {
710 struct typhoon *tp = netdev_priv(dev);
711 struct cmd_desc xp_cmd;
712 int err;
713
714 spin_lock_bh(&tp->state_lock);
715 if(!tp->vlgrp != !grp) {
716 /* We've either been turned on for the first time, or we've
717 * been turned off. Update the 3XP.
718 */
719 if(grp)
720 tp->offload |= TYPHOON_OFFLOAD_VLAN;
721 else
722 tp->offload &= ~TYPHOON_OFFLOAD_VLAN;
723
724 /* If the interface is up, the runtime is running -- and we
725 * must be up for the vlan core to call us.
726 *
727 * Do the command outside of the spin lock, as it is slow.
728 */
729 INIT_COMMAND_WITH_RESPONSE(&xp_cmd,
730 TYPHOON_CMD_SET_OFFLOAD_TASKS);
731 xp_cmd.parm2 = tp->offload;
732 xp_cmd.parm3 = tp->offload;
733 spin_unlock_bh(&tp->state_lock);
734 err = typhoon_issue_command(tp, 1, &xp_cmd, 0, NULL);
735 if(err < 0)
736 printk("%s: vlan offload error %d\n", tp->name, -err);
737 spin_lock_bh(&tp->state_lock);
738 }
739
740 /* now make the change visible */
741 tp->vlgrp = grp;
742 spin_unlock_bh(&tp->state_lock);
743 }
744
745 static inline void
746 typhoon_tso_fill(struct sk_buff *skb, struct transmit_ring *txRing,
747 u32 ring_dma)
748 {
749 struct tcpopt_desc *tcpd;
750 u32 tcpd_offset = ring_dma;
751
752 tcpd = (struct tcpopt_desc *) (txRing->ringBase + txRing->lastWrite);
753 tcpd_offset += txRing->lastWrite;
754 tcpd_offset += offsetof(struct tcpopt_desc, bytesTx);
755 typhoon_inc_tx_index(&txRing->lastWrite, 1);
756
757 tcpd->flags = TYPHOON_OPT_DESC | TYPHOON_OPT_TCP_SEG;
758 tcpd->numDesc = 1;
759 tcpd->mss_flags = cpu_to_le16(skb_tso_size(skb));
760 tcpd->mss_flags |= TYPHOON_TSO_FIRST | TYPHOON_TSO_LAST;
761 tcpd->respAddrLo = cpu_to_le32(tcpd_offset);
762 tcpd->bytesTx = cpu_to_le32(skb->len);
763 tcpd->status = 0;
764 }
765
766 static int
767 typhoon_start_tx(struct sk_buff *skb, struct net_device *dev)
768 {
769 struct typhoon *tp = netdev_priv(dev);
770 struct transmit_ring *txRing;
771 struct tx_desc *txd, *first_txd;
772 dma_addr_t skb_dma;
773 int numDesc;
774
775 /* we have two rings to choose from, but we only use txLo for now
776 * If we start using the Hi ring as well, we'll need to update
777 * typhoon_stop_runtime(), typhoon_interrupt(), typhoon_num_free_tx(),
778 * and TXHI_ENTRIES to match, as well as update the TSO code below
779 * to get the right DMA address
780 */
781 txRing = &tp->txLoRing;
782
783 /* We need one descriptor for each fragment of the sk_buff, plus the
784 * one for the ->data area of it.
785 *
786 * The docs say a maximum of 16 fragment descriptors per TCP option
787 * descriptor, then make a new packet descriptor and option descriptor
788 * for the next 16 fragments. The engineers say just an option
789 * descriptor is needed. I've tested up to 26 fragments with a single
790 * packet descriptor/option descriptor combo, so I use that for now.
791 *
792 * If problems develop with TSO, check this first.
793 */
794 numDesc = skb_shinfo(skb)->nr_frags + 1;
795 if (skb_is_gso(skb))
796 numDesc++;
797
798 /* When checking for free space in the ring, we need to also
799 * account for the initial Tx descriptor, and we always must leave
800 * at least one descriptor unused in the ring so that it doesn't
801 * wrap and look empty.
802 *
803 * The only time we should loop here is when we hit the race
804 * between marking the queue awake and updating the cleared index.
805 * Just loop and it will appear. This comes from the acenic driver.
806 */
807 while(unlikely(typhoon_num_free_tx(txRing) < (numDesc + 2)))
808 smp_rmb();
809
810 first_txd = (struct tx_desc *) (txRing->ringBase + txRing->lastWrite);
811 typhoon_inc_tx_index(&txRing->lastWrite, 1);
812
813 first_txd->flags = TYPHOON_TX_DESC | TYPHOON_DESC_VALID;
814 first_txd->numDesc = 0;
815 first_txd->len = 0;
816 first_txd->tx_addr = (u64)((unsigned long) skb);
817 first_txd->processFlags = 0;
818
819 if(skb->ip_summed == CHECKSUM_PARTIAL) {
820 /* The 3XP will figure out if this is UDP/TCP */
821 first_txd->processFlags |= TYPHOON_TX_PF_TCP_CHKSUM;
822 first_txd->processFlags |= TYPHOON_TX_PF_UDP_CHKSUM;
823 first_txd->processFlags |= TYPHOON_TX_PF_IP_CHKSUM;
824 }
825
826 if(vlan_tx_tag_present(skb)) {
827 first_txd->processFlags |=
828 TYPHOON_TX_PF_INSERT_VLAN | TYPHOON_TX_PF_VLAN_PRIORITY;
829 first_txd->processFlags |=
830 cpu_to_le32(ntohs(vlan_tx_tag_get(skb)) <<
831 TYPHOON_TX_PF_VLAN_TAG_SHIFT);
832 }
833
834 if (skb_is_gso(skb)) {
835 first_txd->processFlags |= TYPHOON_TX_PF_TCP_SEGMENT;
836 first_txd->numDesc++;
837
838 typhoon_tso_fill(skb, txRing, tp->txlo_dma_addr);
839 }
840
841 txd = (struct tx_desc *) (txRing->ringBase + txRing->lastWrite);
842 typhoon_inc_tx_index(&txRing->lastWrite, 1);
843
844 /* No need to worry about padding packet -- the firmware pads
845 * it with zeros to ETH_ZLEN for us.
846 */
847 if(skb_shinfo(skb)->nr_frags == 0) {
848 skb_dma = pci_map_single(tp->tx_pdev, skb->data, skb->len,
849 PCI_DMA_TODEVICE);
850 txd->flags = TYPHOON_FRAG_DESC | TYPHOON_DESC_VALID;
851 txd->len = cpu_to_le16(skb->len);
852 txd->frag.addr = cpu_to_le32(skb_dma);
853 txd->frag.addrHi = 0;
854 first_txd->numDesc++;
855 } else {
856 int i, len;
857
858 len = skb_headlen(skb);
859 skb_dma = pci_map_single(tp->tx_pdev, skb->data, len,
860 PCI_DMA_TODEVICE);
861 txd->flags = TYPHOON_FRAG_DESC | TYPHOON_DESC_VALID;
862 txd->len = cpu_to_le16(len);
863 txd->frag.addr = cpu_to_le32(skb_dma);
864 txd->frag.addrHi = 0;
865 first_txd->numDesc++;
866
867 for(i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
868 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
869 void *frag_addr;
870
871 txd = (struct tx_desc *) (txRing->ringBase +
872 txRing->lastWrite);
873 typhoon_inc_tx_index(&txRing->lastWrite, 1);
874
875 len = frag->size;
876 frag_addr = (void *) page_address(frag->page) +
877 frag->page_offset;
878 skb_dma = pci_map_single(tp->tx_pdev, frag_addr, len,
879 PCI_DMA_TODEVICE);
880 txd->flags = TYPHOON_FRAG_DESC | TYPHOON_DESC_VALID;
881 txd->len = cpu_to_le16(len);
882 txd->frag.addr = cpu_to_le32(skb_dma);
883 txd->frag.addrHi = 0;
884 first_txd->numDesc++;
885 }
886 }
887
888 /* Kick the 3XP
889 */
890 wmb();
891 iowrite32(txRing->lastWrite, tp->tx_ioaddr + txRing->writeRegister);
892
893 dev->trans_start = jiffies;
894
895 /* If we don't have room to put the worst case packet on the
896 * queue, then we must stop the queue. We need 2 extra
897 * descriptors -- one to prevent ring wrap, and one for the
898 * Tx header.
899 */
900 numDesc = MAX_SKB_FRAGS + TSO_NUM_DESCRIPTORS + 1;
901
902 if(typhoon_num_free_tx(txRing) < (numDesc + 2)) {
903 netif_stop_queue(dev);
904
905 /* A Tx complete IRQ could have gotten inbetween, making
906 * the ring free again. Only need to recheck here, since
907 * Tx is serialized.
908 */
909 if(typhoon_num_free_tx(txRing) >= (numDesc + 2))
910 netif_wake_queue(dev);
911 }
912
913 return 0;
914 }
915
916 static void
917 typhoon_set_rx_mode(struct net_device *dev)
918 {
919 struct typhoon *tp = netdev_priv(dev);
920 struct cmd_desc xp_cmd;
921 u32 mc_filter[2];
922 __le16 filter;
923
924 filter = TYPHOON_RX_FILTER_DIRECTED | TYPHOON_RX_FILTER_BROADCAST;
925 if(dev->flags & IFF_PROMISC) {
926 filter |= TYPHOON_RX_FILTER_PROMISCOUS;
927 } else if((dev->mc_count > multicast_filter_limit) ||
928 (dev->flags & IFF_ALLMULTI)) {
929 /* Too many to match, or accept all multicasts. */
930 filter |= TYPHOON_RX_FILTER_ALL_MCAST;
931 } else if(dev->mc_count) {
932 struct dev_mc_list *mclist;
933 int i;
934
935 memset(mc_filter, 0, sizeof(mc_filter));
936 for(i = 0, mclist = dev->mc_list; mclist && i < dev->mc_count;
937 i++, mclist = mclist->next) {
938 int bit = ether_crc(ETH_ALEN, mclist->dmi_addr) & 0x3f;
939 mc_filter[bit >> 5] |= 1 << (bit & 0x1f);
940 }
941
942 INIT_COMMAND_NO_RESPONSE(&xp_cmd,
943 TYPHOON_CMD_SET_MULTICAST_HASH);
944 xp_cmd.parm1 = TYPHOON_MCAST_HASH_SET;
945 xp_cmd.parm2 = cpu_to_le32(mc_filter[0]);
946 xp_cmd.parm3 = cpu_to_le32(mc_filter[1]);
947 typhoon_issue_command(tp, 1, &xp_cmd, 0, NULL);
948
949 filter |= TYPHOON_RX_FILTER_MCAST_HASH;
950 }
951
952 INIT_COMMAND_NO_RESPONSE(&xp_cmd, TYPHOON_CMD_SET_RX_FILTER);
953 xp_cmd.parm1 = filter;
954 typhoon_issue_command(tp, 1, &xp_cmd, 0, NULL);
955 }
956
957 static int
958 typhoon_do_get_stats(struct typhoon *tp)
959 {
960 struct net_device_stats *stats = &tp->stats;
961 struct net_device_stats *saved = &tp->stats_saved;
962 struct cmd_desc xp_cmd;
963 struct resp_desc xp_resp[7];
964 struct stats_resp *s = (struct stats_resp *) xp_resp;
965 int err;
966
967 INIT_COMMAND_WITH_RESPONSE(&xp_cmd, TYPHOON_CMD_READ_STATS);
968 err = typhoon_issue_command(tp, 1, &xp_cmd, 7, xp_resp);
969 if(err < 0)
970 return err;
971
972 /* 3Com's Linux driver uses txMultipleCollisions as it's
973 * collisions value, but there is some other collision info as well...
974 *
975 * The extra status reported would be a good candidate for
976 * ethtool_ops->get_{strings,stats}()
977 */
978 stats->tx_packets = le32_to_cpu(s->txPackets);
979 stats->tx_bytes = le64_to_cpu(s->txBytes);
980 stats->tx_errors = le32_to_cpu(s->txCarrierLost);
981 stats->tx_carrier_errors = le32_to_cpu(s->txCarrierLost);
982 stats->collisions = le32_to_cpu(s->txMultipleCollisions);
983 stats->rx_packets = le32_to_cpu(s->rxPacketsGood);
984 stats->rx_bytes = le64_to_cpu(s->rxBytesGood);
985 stats->rx_fifo_errors = le32_to_cpu(s->rxFifoOverruns);
986 stats->rx_errors = le32_to_cpu(s->rxFifoOverruns) +
987 le32_to_cpu(s->BadSSD) + le32_to_cpu(s->rxCrcErrors);
988 stats->rx_crc_errors = le32_to_cpu(s->rxCrcErrors);
989 stats->rx_length_errors = le32_to_cpu(s->rxOversized);
990 tp->speed = (s->linkStatus & TYPHOON_LINK_100MBPS) ?
991 SPEED_100 : SPEED_10;
992 tp->duplex = (s->linkStatus & TYPHOON_LINK_FULL_DUPLEX) ?
993 DUPLEX_FULL : DUPLEX_HALF;
994
995 /* add in the saved statistics
996 */
997 stats->tx_packets += saved->tx_packets;
998 stats->tx_bytes += saved->tx_bytes;
999 stats->tx_errors += saved->tx_errors;
1000 stats->collisions += saved->collisions;
1001 stats->rx_packets += saved->rx_packets;
1002 stats->rx_bytes += saved->rx_bytes;
1003 stats->rx_fifo_errors += saved->rx_fifo_errors;
1004 stats->rx_errors += saved->rx_errors;
1005 stats->rx_crc_errors += saved->rx_crc_errors;
1006 stats->rx_length_errors += saved->rx_length_errors;
1007
1008 return 0;
1009 }
1010
1011 static struct net_device_stats *
1012 typhoon_get_stats(struct net_device *dev)
1013 {
1014 struct typhoon *tp = netdev_priv(dev);
1015 struct net_device_stats *stats = &tp->stats;
1016 struct net_device_stats *saved = &tp->stats_saved;
1017
1018 smp_rmb();
1019 if(tp->card_state == Sleeping)
1020 return saved;
1021
1022 if(typhoon_do_get_stats(tp) < 0) {
1023 printk(KERN_ERR "%s: error getting stats\n", dev->name);
1024 return saved;
1025 }
1026
1027 return stats;
1028 }
1029
1030 static int
1031 typhoon_set_mac_address(struct net_device *dev, void *addr)
1032 {
1033 struct sockaddr *saddr = (struct sockaddr *) addr;
1034
1035 if(netif_running(dev))
1036 return -EBUSY;
1037
1038 memcpy(dev->dev_addr, saddr->sa_data, dev->addr_len);
1039 return 0;
1040 }
1041
1042 static void
1043 typhoon_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
1044 {
1045 struct typhoon *tp = netdev_priv(dev);
1046 struct pci_dev *pci_dev = tp->pdev;
1047 struct cmd_desc xp_cmd;
1048 struct resp_desc xp_resp[3];
1049
1050 smp_rmb();
1051 if(tp->card_state == Sleeping) {
1052 strcpy(info->fw_version, "Sleep image");
1053 } else {
1054 INIT_COMMAND_WITH_RESPONSE(&xp_cmd, TYPHOON_CMD_READ_VERSIONS);
1055 if(typhoon_issue_command(tp, 1, &xp_cmd, 3, xp_resp) < 0) {
1056 strcpy(info->fw_version, "Unknown runtime");
1057 } else {
1058 u32 sleep_ver = le32_to_cpu(xp_resp[0].parm2);
1059 snprintf(info->fw_version, 32, "%02x.%03x.%03x",
1060 sleep_ver >> 24, (sleep_ver >> 12) & 0xfff,
1061 sleep_ver & 0xfff);
1062 }
1063 }
1064
1065 strcpy(info->driver, DRV_MODULE_NAME);
1066 strcpy(info->version, DRV_MODULE_VERSION);
1067 strcpy(info->bus_info, pci_name(pci_dev));
1068 }
1069
1070 static int
1071 typhoon_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
1072 {
1073 struct typhoon *tp = netdev_priv(dev);
1074
1075 cmd->supported = SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full |
1076 SUPPORTED_Autoneg;
1077
1078 switch (tp->xcvr_select) {
1079 case TYPHOON_XCVR_10HALF:
1080 cmd->advertising = ADVERTISED_10baseT_Half;
1081 break;
1082 case TYPHOON_XCVR_10FULL:
1083 cmd->advertising = ADVERTISED_10baseT_Full;
1084 break;
1085 case TYPHOON_XCVR_100HALF:
1086 cmd->advertising = ADVERTISED_100baseT_Half;
1087 break;
1088 case TYPHOON_XCVR_100FULL:
1089 cmd->advertising = ADVERTISED_100baseT_Full;
1090 break;
1091 case TYPHOON_XCVR_AUTONEG:
1092 cmd->advertising = ADVERTISED_10baseT_Half |
1093 ADVERTISED_10baseT_Full |
1094 ADVERTISED_100baseT_Half |
1095 ADVERTISED_100baseT_Full |
1096 ADVERTISED_Autoneg;
1097 break;
1098 }
1099
1100 if(tp->capabilities & TYPHOON_FIBER) {
1101 cmd->supported |= SUPPORTED_FIBRE;
1102 cmd->advertising |= ADVERTISED_FIBRE;
1103 cmd->port = PORT_FIBRE;
1104 } else {
1105 cmd->supported |= SUPPORTED_10baseT_Half |
1106 SUPPORTED_10baseT_Full |
1107 SUPPORTED_TP;
1108 cmd->advertising |= ADVERTISED_TP;
1109 cmd->port = PORT_TP;
1110 }
1111
1112 /* need to get stats to make these link speed/duplex valid */
1113 typhoon_do_get_stats(tp);
1114 cmd->speed = tp->speed;
1115 cmd->duplex = tp->duplex;
1116 cmd->phy_address = 0;
1117 cmd->transceiver = XCVR_INTERNAL;
1118 if(tp->xcvr_select == TYPHOON_XCVR_AUTONEG)
1119 cmd->autoneg = AUTONEG_ENABLE;
1120 else
1121 cmd->autoneg = AUTONEG_DISABLE;
1122 cmd->maxtxpkt = 1;
1123 cmd->maxrxpkt = 1;
1124
1125 return 0;
1126 }
1127
1128 static int
1129 typhoon_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
1130 {
1131 struct typhoon *tp = netdev_priv(dev);
1132 struct cmd_desc xp_cmd;
1133 __le16 xcvr;
1134 int err;
1135
1136 err = -EINVAL;
1137 if(cmd->autoneg == AUTONEG_ENABLE) {
1138 xcvr = TYPHOON_XCVR_AUTONEG;
1139 } else {
1140 if(cmd->duplex == DUPLEX_HALF) {
1141 if(cmd->speed == SPEED_10)
1142 xcvr = TYPHOON_XCVR_10HALF;
1143 else if(cmd->speed == SPEED_100)
1144 xcvr = TYPHOON_XCVR_100HALF;
1145 else
1146 goto out;
1147 } else if(cmd->duplex == DUPLEX_FULL) {
1148 if(cmd->speed == SPEED_10)
1149 xcvr = TYPHOON_XCVR_10FULL;
1150 else if(cmd->speed == SPEED_100)
1151 xcvr = TYPHOON_XCVR_100FULL;
1152 else
1153 goto out;
1154 } else
1155 goto out;
1156 }
1157
1158 INIT_COMMAND_NO_RESPONSE(&xp_cmd, TYPHOON_CMD_XCVR_SELECT);
1159 xp_cmd.parm1 = xcvr;
1160 err = typhoon_issue_command(tp, 1, &xp_cmd, 0, NULL);
1161 if(err < 0)
1162 goto out;
1163
1164 tp->xcvr_select = xcvr;
1165 if(cmd->autoneg == AUTONEG_ENABLE) {
1166 tp->speed = 0xff; /* invalid */
1167 tp->duplex = 0xff; /* invalid */
1168 } else {
1169 tp->speed = cmd->speed;
1170 tp->duplex = cmd->duplex;
1171 }
1172
1173 out:
1174 return err;
1175 }
1176
1177 static void
1178 typhoon_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
1179 {
1180 struct typhoon *tp = netdev_priv(dev);
1181
1182 wol->supported = WAKE_PHY | WAKE_MAGIC;
1183 wol->wolopts = 0;
1184 if(tp->wol_events & TYPHOON_WAKE_LINK_EVENT)
1185 wol->wolopts |= WAKE_PHY;
1186 if(tp->wol_events & TYPHOON_WAKE_MAGIC_PKT)
1187 wol->wolopts |= WAKE_MAGIC;
1188 memset(&wol->sopass, 0, sizeof(wol->sopass));
1189 }
1190
1191 static int
1192 typhoon_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
1193 {
1194 struct typhoon *tp = netdev_priv(dev);
1195
1196 if(wol->wolopts & ~(WAKE_PHY | WAKE_MAGIC))
1197 return -EINVAL;
1198
1199 tp->wol_events = 0;
1200 if(wol->wolopts & WAKE_PHY)
1201 tp->wol_events |= TYPHOON_WAKE_LINK_EVENT;
1202 if(wol->wolopts & WAKE_MAGIC)
1203 tp->wol_events |= TYPHOON_WAKE_MAGIC_PKT;
1204
1205 return 0;
1206 }
1207
1208 static u32
1209 typhoon_get_rx_csum(struct net_device *dev)
1210 {
1211 /* For now, we don't allow turning off RX checksums.
1212 */
1213 return 1;
1214 }
1215
1216 static void
1217 typhoon_get_ringparam(struct net_device *dev, struct ethtool_ringparam *ering)
1218 {
1219 ering->rx_max_pending = RXENT_ENTRIES;
1220 ering->rx_mini_max_pending = 0;
1221 ering->rx_jumbo_max_pending = 0;
1222 ering->tx_max_pending = TXLO_ENTRIES - 1;
1223
1224 ering->rx_pending = RXENT_ENTRIES;
1225 ering->rx_mini_pending = 0;
1226 ering->rx_jumbo_pending = 0;
1227 ering->tx_pending = TXLO_ENTRIES - 1;
1228 }
1229
1230 static const struct ethtool_ops typhoon_ethtool_ops = {
1231 .get_settings = typhoon_get_settings,
1232 .set_settings = typhoon_set_settings,
1233 .get_drvinfo = typhoon_get_drvinfo,
1234 .get_wol = typhoon_get_wol,
1235 .set_wol = typhoon_set_wol,
1236 .get_link = ethtool_op_get_link,
1237 .get_rx_csum = typhoon_get_rx_csum,
1238 .set_tx_csum = ethtool_op_set_tx_csum,
1239 .set_sg = ethtool_op_set_sg,
1240 .set_tso = ethtool_op_set_tso,
1241 .get_ringparam = typhoon_get_ringparam,
1242 };
1243
1244 static int
1245 typhoon_wait_interrupt(void __iomem *ioaddr)
1246 {
1247 int i, err = 0;
1248
1249 for(i = 0; i < TYPHOON_WAIT_TIMEOUT; i++) {
1250 if(ioread32(ioaddr + TYPHOON_REG_INTR_STATUS) &
1251 TYPHOON_INTR_BOOTCMD)
1252 goto out;
1253 udelay(TYPHOON_UDELAY);
1254 }
1255
1256 err = -ETIMEDOUT;
1257
1258 out:
1259 iowrite32(TYPHOON_INTR_BOOTCMD, ioaddr + TYPHOON_REG_INTR_STATUS);
1260 return err;
1261 }
1262
1263 #define shared_offset(x) offsetof(struct typhoon_shared, x)
1264
1265 static void
1266 typhoon_init_interface(struct typhoon *tp)
1267 {
1268 struct typhoon_interface *iface = &tp->shared->iface;
1269 dma_addr_t shared_dma;
1270
1271 memset(tp->shared, 0, sizeof(struct typhoon_shared));
1272
1273 /* The *Hi members of iface are all init'd to zero by the memset().
1274 */
1275 shared_dma = tp->shared_dma + shared_offset(indexes);
1276 iface->ringIndex = cpu_to_le32(shared_dma);
1277
1278 shared_dma = tp->shared_dma + shared_offset(txLo);
1279 iface->txLoAddr = cpu_to_le32(shared_dma);
1280 iface->txLoSize = cpu_to_le32(TXLO_ENTRIES * sizeof(struct tx_desc));
1281
1282 shared_dma = tp->shared_dma + shared_offset(txHi);
1283 iface->txHiAddr = cpu_to_le32(shared_dma);
1284 iface->txHiSize = cpu_to_le32(TXHI_ENTRIES * sizeof(struct tx_desc));
1285
1286 shared_dma = tp->shared_dma + shared_offset(rxBuff);
1287 iface->rxBuffAddr = cpu_to_le32(shared_dma);
1288 iface->rxBuffSize = cpu_to_le32(RXFREE_ENTRIES *
1289 sizeof(struct rx_free));
1290
1291 shared_dma = tp->shared_dma + shared_offset(rxLo);
1292 iface->rxLoAddr = cpu_to_le32(shared_dma);
1293 iface->rxLoSize = cpu_to_le32(RX_ENTRIES * sizeof(struct rx_desc));
1294
1295 shared_dma = tp->shared_dma + shared_offset(rxHi);
1296 iface->rxHiAddr = cpu_to_le32(shared_dma);
1297 iface->rxHiSize = cpu_to_le32(RX_ENTRIES * sizeof(struct rx_desc));
1298
1299 shared_dma = tp->shared_dma + shared_offset(cmd);
1300 iface->cmdAddr = cpu_to_le32(shared_dma);
1301 iface->cmdSize = cpu_to_le32(COMMAND_RING_SIZE);
1302
1303 shared_dma = tp->shared_dma + shared_offset(resp);
1304 iface->respAddr = cpu_to_le32(shared_dma);
1305 iface->respSize = cpu_to_le32(RESPONSE_RING_SIZE);
1306
1307 shared_dma = tp->shared_dma + shared_offset(zeroWord);
1308 iface->zeroAddr = cpu_to_le32(shared_dma);
1309
1310 tp->indexes = &tp->shared->indexes;
1311 tp->txLoRing.ringBase = (u8 *) tp->shared->txLo;
1312 tp->txHiRing.ringBase = (u8 *) tp->shared->txHi;
1313 tp->rxLoRing.ringBase = (u8 *) tp->shared->rxLo;
1314 tp->rxHiRing.ringBase = (u8 *) tp->shared->rxHi;
1315 tp->rxBuffRing.ringBase = (u8 *) tp->shared->rxBuff;
1316 tp->cmdRing.ringBase = (u8 *) tp->shared->cmd;
1317 tp->respRing.ringBase = (u8 *) tp->shared->resp;
1318
1319 tp->txLoRing.writeRegister = TYPHOON_REG_TX_LO_READY;
1320 tp->txHiRing.writeRegister = TYPHOON_REG_TX_HI_READY;
1321
1322 tp->txlo_dma_addr = le32_to_cpu(iface->txLoAddr);
1323 tp->card_state = Sleeping;
1324 smp_wmb();
1325
1326 tp->offload = TYPHOON_OFFLOAD_IP_CHKSUM | TYPHOON_OFFLOAD_TCP_CHKSUM;
1327 tp->offload |= TYPHOON_OFFLOAD_UDP_CHKSUM | TSO_OFFLOAD_ON;
1328
1329 spin_lock_init(&tp->command_lock);
1330 spin_lock_init(&tp->state_lock);
1331 }
1332
1333 static void
1334 typhoon_init_rings(struct typhoon *tp)
1335 {
1336 memset(tp->indexes, 0, sizeof(struct typhoon_indexes));
1337
1338 tp->txLoRing.lastWrite = 0;
1339 tp->txHiRing.lastWrite = 0;
1340 tp->rxLoRing.lastWrite = 0;
1341 tp->rxHiRing.lastWrite = 0;
1342 tp->rxBuffRing.lastWrite = 0;
1343 tp->cmdRing.lastWrite = 0;
1344 tp->cmdRing.lastWrite = 0;
1345
1346 tp->txLoRing.lastRead = 0;
1347 tp->txHiRing.lastRead = 0;
1348 }
1349
1350 static int
1351 typhoon_download_firmware(struct typhoon *tp)
1352 {
1353 void __iomem *ioaddr = tp->ioaddr;
1354 struct pci_dev *pdev = tp->pdev;
1355 struct typhoon_file_header *fHdr;
1356 struct typhoon_section_header *sHdr;
1357 u8 *image_data;
1358 void *dpage;
1359 dma_addr_t dpage_dma;
1360 __sum16 csum;
1361 u32 irqEnabled;
1362 u32 irqMasked;
1363 u32 numSections;
1364 u32 section_len;
1365 u32 len;
1366 u32 load_addr;
1367 u32 hmac;
1368 int i;
1369 int err;
1370
1371 err = -EINVAL;
1372 fHdr = (struct typhoon_file_header *) typhoon_firmware_image;
1373 image_data = (u8 *) fHdr;
1374
1375 if(memcmp(fHdr->tag, "TYPHOON", 8)) {
1376 printk(KERN_ERR "%s: Invalid firmware image!\n", tp->name);
1377 goto err_out;
1378 }
1379
1380 /* Cannot just map the firmware image using pci_map_single() as
1381 * the firmware is part of the kernel/module image, so we allocate
1382 * some consistent memory to copy the sections into, as it is simpler,
1383 * and short-lived. If we ever split out and require a userland
1384 * firmware loader, then we can revisit this.
1385 */
1386 err = -ENOMEM;
1387 dpage = pci_alloc_consistent(pdev, PAGE_SIZE, &dpage_dma);
1388 if(!dpage) {
1389 printk(KERN_ERR "%s: no DMA mem for firmware\n", tp->name);
1390 goto err_out;
1391 }
1392
1393 irqEnabled = ioread32(ioaddr + TYPHOON_REG_INTR_ENABLE);
1394 iowrite32(irqEnabled | TYPHOON_INTR_BOOTCMD,
1395 ioaddr + TYPHOON_REG_INTR_ENABLE);
1396 irqMasked = ioread32(ioaddr + TYPHOON_REG_INTR_MASK);
1397 iowrite32(irqMasked | TYPHOON_INTR_BOOTCMD,
1398 ioaddr + TYPHOON_REG_INTR_MASK);
1399
1400 err = -ETIMEDOUT;
1401 if(typhoon_wait_status(ioaddr, TYPHOON_STATUS_WAITING_FOR_HOST) < 0) {
1402 printk(KERN_ERR "%s: card ready timeout\n", tp->name);
1403 goto err_out_irq;
1404 }
1405
1406 numSections = le32_to_cpu(fHdr->numSections);
1407 load_addr = le32_to_cpu(fHdr->startAddr);
1408
1409 iowrite32(TYPHOON_INTR_BOOTCMD, ioaddr + TYPHOON_REG_INTR_STATUS);
1410 iowrite32(load_addr, ioaddr + TYPHOON_REG_DOWNLOAD_BOOT_ADDR);
1411 hmac = le32_to_cpu(fHdr->hmacDigest[0]);
1412 iowrite32(hmac, ioaddr + TYPHOON_REG_DOWNLOAD_HMAC_0);
1413 hmac = le32_to_cpu(fHdr->hmacDigest[1]);
1414 iowrite32(hmac, ioaddr + TYPHOON_REG_DOWNLOAD_HMAC_1);
1415 hmac = le32_to_cpu(fHdr->hmacDigest[2]);
1416 iowrite32(hmac, ioaddr + TYPHOON_REG_DOWNLOAD_HMAC_2);
1417 hmac = le32_to_cpu(fHdr->hmacDigest[3]);
1418 iowrite32(hmac, ioaddr + TYPHOON_REG_DOWNLOAD_HMAC_3);
1419 hmac = le32_to_cpu(fHdr->hmacDigest[4]);
1420 iowrite32(hmac, ioaddr + TYPHOON_REG_DOWNLOAD_HMAC_4);
1421 typhoon_post_pci_writes(ioaddr);
1422 iowrite32(TYPHOON_BOOTCMD_RUNTIME_IMAGE, ioaddr + TYPHOON_REG_COMMAND);
1423
1424 image_data += sizeof(struct typhoon_file_header);
1425
1426 /* The ioread32() in typhoon_wait_interrupt() will force the
1427 * last write to the command register to post, so
1428 * we don't need a typhoon_post_pci_writes() after it.
1429 */
1430 for(i = 0; i < numSections; i++) {
1431 sHdr = (struct typhoon_section_header *) image_data;
1432 image_data += sizeof(struct typhoon_section_header);
1433 load_addr = le32_to_cpu(sHdr->startAddr);
1434 section_len = le32_to_cpu(sHdr->len);
1435
1436 while(section_len) {
1437 len = min_t(u32, section_len, PAGE_SIZE);
1438
1439 if(typhoon_wait_interrupt(ioaddr) < 0 ||
1440 ioread32(ioaddr + TYPHOON_REG_STATUS) !=
1441 TYPHOON_STATUS_WAITING_FOR_SEGMENT) {
1442 printk(KERN_ERR "%s: segment ready timeout\n",
1443 tp->name);
1444 goto err_out_irq;
1445 }
1446
1447 /* Do an pseudo IPv4 checksum on the data -- first
1448 * need to convert each u16 to cpu order before
1449 * summing. Fortunately, due to the properties of
1450 * the checksum, we can do this once, at the end.
1451 */
1452 csum = csum_fold(csum_partial_copy_nocheck(image_data,
1453 dpage, len,
1454 0));
1455
1456 iowrite32(len, ioaddr + TYPHOON_REG_BOOT_LENGTH);
1457 iowrite32(le16_to_cpu((__force __le16)csum),
1458 ioaddr + TYPHOON_REG_BOOT_CHECKSUM);
1459 iowrite32(load_addr,
1460 ioaddr + TYPHOON_REG_BOOT_DEST_ADDR);
1461 iowrite32(0, ioaddr + TYPHOON_REG_BOOT_DATA_HI);
1462 iowrite32(dpage_dma, ioaddr + TYPHOON_REG_BOOT_DATA_LO);
1463 typhoon_post_pci_writes(ioaddr);
1464 iowrite32(TYPHOON_BOOTCMD_SEG_AVAILABLE,
1465 ioaddr + TYPHOON_REG_COMMAND);
1466
1467 image_data += len;
1468 load_addr += len;
1469 section_len -= len;
1470 }
1471 }
1472
1473 if(typhoon_wait_interrupt(ioaddr) < 0 ||
1474 ioread32(ioaddr + TYPHOON_REG_STATUS) !=
1475 TYPHOON_STATUS_WAITING_FOR_SEGMENT) {
1476 printk(KERN_ERR "%s: final segment ready timeout\n", tp->name);
1477 goto err_out_irq;
1478 }
1479
1480 iowrite32(TYPHOON_BOOTCMD_DNLD_COMPLETE, ioaddr + TYPHOON_REG_COMMAND);
1481
1482 if(typhoon_wait_status(ioaddr, TYPHOON_STATUS_WAITING_FOR_BOOT) < 0) {
1483 printk(KERN_ERR "%s: boot ready timeout, status 0x%0x\n",
1484 tp->name, ioread32(ioaddr + TYPHOON_REG_STATUS));
1485 goto err_out_irq;
1486 }
1487
1488 err = 0;
1489
1490 err_out_irq:
1491 iowrite32(irqMasked, ioaddr + TYPHOON_REG_INTR_MASK);
1492 iowrite32(irqEnabled, ioaddr + TYPHOON_REG_INTR_ENABLE);
1493
1494 pci_free_consistent(pdev, PAGE_SIZE, dpage, dpage_dma);
1495
1496 err_out:
1497 return err;
1498 }
1499
1500 static int
1501 typhoon_boot_3XP(struct typhoon *tp, u32 initial_status)
1502 {
1503 void __iomem *ioaddr = tp->ioaddr;
1504
1505 if(typhoon_wait_status(ioaddr, initial_status) < 0) {
1506 printk(KERN_ERR "%s: boot ready timeout\n", tp->name);
1507 goto out_timeout;
1508 }
1509
1510 iowrite32(0, ioaddr + TYPHOON_REG_BOOT_RECORD_ADDR_HI);
1511 iowrite32(tp->shared_dma, ioaddr + TYPHOON_REG_BOOT_RECORD_ADDR_LO);
1512 typhoon_post_pci_writes(ioaddr);
1513 iowrite32(TYPHOON_BOOTCMD_REG_BOOT_RECORD,
1514 ioaddr + TYPHOON_REG_COMMAND);
1515
1516 if(typhoon_wait_status(ioaddr, TYPHOON_STATUS_RUNNING) < 0) {
1517 printk(KERN_ERR "%s: boot finish timeout (status 0x%x)\n",
1518 tp->name, ioread32(ioaddr + TYPHOON_REG_STATUS));
1519 goto out_timeout;
1520 }
1521
1522 /* Clear the Transmit and Command ready registers
1523 */
1524 iowrite32(0, ioaddr + TYPHOON_REG_TX_HI_READY);
1525 iowrite32(0, ioaddr + TYPHOON_REG_CMD_READY);
1526 iowrite32(0, ioaddr + TYPHOON_REG_TX_LO_READY);
1527 typhoon_post_pci_writes(ioaddr);
1528 iowrite32(TYPHOON_BOOTCMD_BOOT, ioaddr + TYPHOON_REG_COMMAND);
1529
1530 return 0;
1531
1532 out_timeout:
1533 return -ETIMEDOUT;
1534 }
1535
1536 static u32
1537 typhoon_clean_tx(struct typhoon *tp, struct transmit_ring *txRing,
1538 volatile __le32 * index)
1539 {
1540 u32 lastRead = txRing->lastRead;
1541 struct tx_desc *tx;
1542 dma_addr_t skb_dma;
1543 int dma_len;
1544 int type;
1545
1546 while(lastRead != le32_to_cpu(*index)) {
1547 tx = (struct tx_desc *) (txRing->ringBase + lastRead);
1548 type = tx->flags & TYPHOON_TYPE_MASK;
1549
1550 if(type == TYPHOON_TX_DESC) {
1551 /* This tx_desc describes a packet.
1552 */
1553 unsigned long ptr = tx->tx_addr;
1554 struct sk_buff *skb = (struct sk_buff *) ptr;
1555 dev_kfree_skb_irq(skb);
1556 } else if(type == TYPHOON_FRAG_DESC) {
1557 /* This tx_desc describes a memory mapping. Free it.
1558 */
1559 skb_dma = (dma_addr_t) le32_to_cpu(tx->frag.addr);
1560 dma_len = le16_to_cpu(tx->len);
1561 pci_unmap_single(tp->pdev, skb_dma, dma_len,
1562 PCI_DMA_TODEVICE);
1563 }
1564
1565 tx->flags = 0;
1566 typhoon_inc_tx_index(&lastRead, 1);
1567 }
1568
1569 return lastRead;
1570 }
1571
1572 static void
1573 typhoon_tx_complete(struct typhoon *tp, struct transmit_ring *txRing,
1574 volatile __le32 * index)
1575 {
1576 u32 lastRead;
1577 int numDesc = MAX_SKB_FRAGS + 1;
1578
1579 /* This will need changing if we start to use the Hi Tx ring. */
1580 lastRead = typhoon_clean_tx(tp, txRing, index);
1581 if(netif_queue_stopped(tp->dev) && typhoon_num_free(txRing->lastWrite,
1582 lastRead, TXLO_ENTRIES) > (numDesc + 2))
1583 netif_wake_queue(tp->dev);
1584
1585 txRing->lastRead = lastRead;
1586 smp_wmb();
1587 }
1588
1589 static void
1590 typhoon_recycle_rx_skb(struct typhoon *tp, u32 idx)
1591 {
1592 struct typhoon_indexes *indexes = tp->indexes;
1593 struct rxbuff_ent *rxb = &tp->rxbuffers[idx];
1594 struct basic_ring *ring = &tp->rxBuffRing;
1595 struct rx_free *r;
1596
1597 if((ring->lastWrite + sizeof(*r)) % (RXFREE_ENTRIES * sizeof(*r)) ==
1598 le32_to_cpu(indexes->rxBuffCleared)) {
1599 /* no room in ring, just drop the skb
1600 */
1601 dev_kfree_skb_any(rxb->skb);
1602 rxb->skb = NULL;
1603 return;
1604 }
1605
1606 r = (struct rx_free *) (ring->ringBase + ring->lastWrite);
1607 typhoon_inc_rxfree_index(&ring->lastWrite, 1);
1608 r->virtAddr = idx;
1609 r->physAddr = cpu_to_le32(rxb->dma_addr);
1610
1611 /* Tell the card about it */
1612 wmb();
1613 indexes->rxBuffReady = cpu_to_le32(ring->lastWrite);
1614 }
1615
1616 static int
1617 typhoon_alloc_rx_skb(struct typhoon *tp, u32 idx)
1618 {
1619 struct typhoon_indexes *indexes = tp->indexes;
1620 struct rxbuff_ent *rxb = &tp->rxbuffers[idx];
1621 struct basic_ring *ring = &tp->rxBuffRing;
1622 struct rx_free *r;
1623 struct sk_buff *skb;
1624 dma_addr_t dma_addr;
1625
1626 rxb->skb = NULL;
1627
1628 if((ring->lastWrite + sizeof(*r)) % (RXFREE_ENTRIES * sizeof(*r)) ==
1629 le32_to_cpu(indexes->rxBuffCleared))
1630 return -ENOMEM;
1631
1632 skb = dev_alloc_skb(PKT_BUF_SZ);
1633 if(!skb)
1634 return -ENOMEM;
1635
1636 #if 0
1637 /* Please, 3com, fix the firmware to allow DMA to a unaligned
1638 * address! Pretty please?
1639 */
1640 skb_reserve(skb, 2);
1641 #endif
1642
1643 skb->dev = tp->dev;
1644 dma_addr = pci_map_single(tp->pdev, skb->data,
1645 PKT_BUF_SZ, PCI_DMA_FROMDEVICE);
1646
1647 /* Since no card does 64 bit DAC, the high bits will never
1648 * change from zero.
1649 */
1650 r = (struct rx_free *) (ring->ringBase + ring->lastWrite);
1651 typhoon_inc_rxfree_index(&ring->lastWrite, 1);
1652 r->virtAddr = idx;
1653 r->physAddr = cpu_to_le32(dma_addr);
1654 rxb->skb = skb;
1655 rxb->dma_addr = dma_addr;
1656
1657 /* Tell the card about it */
1658 wmb();
1659 indexes->rxBuffReady = cpu_to_le32(ring->lastWrite);
1660 return 0;
1661 }
1662
1663 static int
1664 typhoon_rx(struct typhoon *tp, struct basic_ring *rxRing, volatile __le32 * ready,
1665 volatile __le32 * cleared, int budget)
1666 {
1667 struct rx_desc *rx;
1668 struct sk_buff *skb, *new_skb;
1669 struct rxbuff_ent *rxb;
1670 dma_addr_t dma_addr;
1671 u32 local_ready;
1672 u32 rxaddr;
1673 int pkt_len;
1674 u32 idx;
1675 __le32 csum_bits;
1676 int received;
1677
1678 received = 0;
1679 local_ready = le32_to_cpu(*ready);
1680 rxaddr = le32_to_cpu(*cleared);
1681 while(rxaddr != local_ready && budget > 0) {
1682 rx = (struct rx_desc *) (rxRing->ringBase + rxaddr);
1683 idx = rx->addr;
1684 rxb = &tp->rxbuffers[idx];
1685 skb = rxb->skb;
1686 dma_addr = rxb->dma_addr;
1687
1688 typhoon_inc_rx_index(&rxaddr, 1);
1689
1690 if(rx->flags & TYPHOON_RX_ERROR) {
1691 typhoon_recycle_rx_skb(tp, idx);
1692 continue;
1693 }
1694
1695 pkt_len = le16_to_cpu(rx->frameLen);
1696
1697 if(pkt_len < rx_copybreak &&
1698 (new_skb = dev_alloc_skb(pkt_len + 2)) != NULL) {
1699 skb_reserve(new_skb, 2);
1700 pci_dma_sync_single_for_cpu(tp->pdev, dma_addr,
1701 PKT_BUF_SZ,
1702 PCI_DMA_FROMDEVICE);
1703 skb_copy_to_linear_data(new_skb, skb->data, pkt_len);
1704 pci_dma_sync_single_for_device(tp->pdev, dma_addr,
1705 PKT_BUF_SZ,
1706 PCI_DMA_FROMDEVICE);
1707 skb_put(new_skb, pkt_len);
1708 typhoon_recycle_rx_skb(tp, idx);
1709 } else {
1710 new_skb = skb;
1711 skb_put(new_skb, pkt_len);
1712 pci_unmap_single(tp->pdev, dma_addr, PKT_BUF_SZ,
1713 PCI_DMA_FROMDEVICE);
1714 typhoon_alloc_rx_skb(tp, idx);
1715 }
1716 new_skb->protocol = eth_type_trans(new_skb, tp->dev);
1717 csum_bits = rx->rxStatus & (TYPHOON_RX_IP_CHK_GOOD |
1718 TYPHOON_RX_UDP_CHK_GOOD | TYPHOON_RX_TCP_CHK_GOOD);
1719 if(csum_bits ==
1720 (TYPHOON_RX_IP_CHK_GOOD | TYPHOON_RX_TCP_CHK_GOOD)
1721 || csum_bits ==
1722 (TYPHOON_RX_IP_CHK_GOOD | TYPHOON_RX_UDP_CHK_GOOD)) {
1723 new_skb->ip_summed = CHECKSUM_UNNECESSARY;
1724 } else
1725 new_skb->ip_summed = CHECKSUM_NONE;
1726
1727 spin_lock(&tp->state_lock);
1728 if(tp->vlgrp != NULL && rx->rxStatus & TYPHOON_RX_VLAN)
1729 vlan_hwaccel_receive_skb(new_skb, tp->vlgrp,
1730 ntohl(rx->vlanTag) & 0xffff);
1731 else
1732 netif_receive_skb(new_skb);
1733 spin_unlock(&tp->state_lock);
1734
1735 tp->dev->last_rx = jiffies;
1736 received++;
1737 budget--;
1738 }
1739 *cleared = cpu_to_le32(rxaddr);
1740
1741 return received;
1742 }
1743
1744 static void
1745 typhoon_fill_free_ring(struct typhoon *tp)
1746 {
1747 u32 i;
1748
1749 for(i = 0; i < RXENT_ENTRIES; i++) {
1750 struct rxbuff_ent *rxb = &tp->rxbuffers[i];
1751 if(rxb->skb)
1752 continue;
1753 if(typhoon_alloc_rx_skb(tp, i) < 0)
1754 break;
1755 }
1756 }
1757
1758 static int
1759 typhoon_poll(struct napi_struct *napi, int budget)
1760 {
1761 struct typhoon *tp = container_of(napi, struct typhoon, napi);
1762 struct net_device *dev = tp->dev;
1763 struct typhoon_indexes *indexes = tp->indexes;
1764 int work_done;
1765
1766 rmb();
1767 if(!tp->awaiting_resp && indexes->respReady != indexes->respCleared)
1768 typhoon_process_response(tp, 0, NULL);
1769
1770 if(le32_to_cpu(indexes->txLoCleared) != tp->txLoRing.lastRead)
1771 typhoon_tx_complete(tp, &tp->txLoRing, &indexes->txLoCleared);
1772
1773 work_done = 0;
1774
1775 if(indexes->rxHiCleared != indexes->rxHiReady) {
1776 work_done += typhoon_rx(tp, &tp->rxHiRing, &indexes->rxHiReady,
1777 &indexes->rxHiCleared, budget);
1778 }
1779
1780 if(indexes->rxLoCleared != indexes->rxLoReady) {
1781 work_done += typhoon_rx(tp, &tp->rxLoRing, &indexes->rxLoReady,
1782 &indexes->rxLoCleared, budget - work_done);
1783 }
1784
1785 if(le32_to_cpu(indexes->rxBuffCleared) == tp->rxBuffRing.lastWrite) {
1786 /* rxBuff ring is empty, try to fill it. */
1787 typhoon_fill_free_ring(tp);
1788 }
1789
1790 if (work_done < budget) {
1791 netif_rx_complete(dev, napi);
1792 iowrite32(TYPHOON_INTR_NONE,
1793 tp->ioaddr + TYPHOON_REG_INTR_MASK);
1794 typhoon_post_pci_writes(tp->ioaddr);
1795 }
1796
1797 return work_done;
1798 }
1799
1800 static irqreturn_t
1801 typhoon_interrupt(int irq, void *dev_instance)
1802 {
1803 struct net_device *dev = dev_instance;
1804 struct typhoon *tp = dev->priv;
1805 void __iomem *ioaddr = tp->ioaddr;
1806 u32 intr_status;
1807
1808 intr_status = ioread32(ioaddr + TYPHOON_REG_INTR_STATUS);
1809 if(!(intr_status & TYPHOON_INTR_HOST_INT))
1810 return IRQ_NONE;
1811
1812 iowrite32(intr_status, ioaddr + TYPHOON_REG_INTR_STATUS);
1813
1814 if (netif_rx_schedule_prep(dev, &tp->napi)) {
1815 iowrite32(TYPHOON_INTR_ALL, ioaddr + TYPHOON_REG_INTR_MASK);
1816 typhoon_post_pci_writes(ioaddr);
1817 __netif_rx_schedule(dev, &tp->napi);
1818 } else {
1819 printk(KERN_ERR "%s: Error, poll already scheduled\n",
1820 dev->name);
1821 }
1822 return IRQ_HANDLED;
1823 }
1824
1825 static void
1826 typhoon_free_rx_rings(struct typhoon *tp)
1827 {
1828 u32 i;
1829
1830 for(i = 0; i < RXENT_ENTRIES; i++) {
1831 struct rxbuff_ent *rxb = &tp->rxbuffers[i];
1832 if(rxb->skb) {
1833 pci_unmap_single(tp->pdev, rxb->dma_addr, PKT_BUF_SZ,
1834 PCI_DMA_FROMDEVICE);
1835 dev_kfree_skb(rxb->skb);
1836 rxb->skb = NULL;
1837 }
1838 }
1839 }
1840
1841 static int
1842 typhoon_sleep(struct typhoon *tp, pci_power_t state, __le16 events)
1843 {
1844 struct pci_dev *pdev = tp->pdev;
1845 void __iomem *ioaddr = tp->ioaddr;
1846 struct cmd_desc xp_cmd;
1847 int err;
1848
1849 INIT_COMMAND_WITH_RESPONSE(&xp_cmd, TYPHOON_CMD_ENABLE_WAKE_EVENTS);
1850 xp_cmd.parm1 = events;
1851 err = typhoon_issue_command(tp, 1, &xp_cmd, 0, NULL);
1852 if(err < 0) {
1853 printk(KERN_ERR "%s: typhoon_sleep(): wake events cmd err %d\n",
1854 tp->name, err);
1855 return err;
1856 }
1857
1858 INIT_COMMAND_NO_RESPONSE(&xp_cmd, TYPHOON_CMD_GOTO_SLEEP);
1859 err = typhoon_issue_command(tp, 1, &xp_cmd, 0, NULL);
1860 if(err < 0) {
1861 printk(KERN_ERR "%s: typhoon_sleep(): sleep cmd err %d\n",
1862 tp->name, err);
1863 return err;
1864 }
1865
1866 if(typhoon_wait_status(ioaddr, TYPHOON_STATUS_SLEEPING) < 0)
1867 return -ETIMEDOUT;
1868
1869 /* Since we cannot monitor the status of the link while sleeping,
1870 * tell the world it went away.
1871 */
1872 netif_carrier_off(tp->dev);
1873
1874 pci_enable_wake(tp->pdev, state, 1);
1875 pci_disable_device(pdev);
1876 return pci_set_power_state(pdev, state);
1877 }
1878
1879 static int
1880 typhoon_wakeup(struct typhoon *tp, int wait_type)
1881 {
1882 struct pci_dev *pdev = tp->pdev;
1883 void __iomem *ioaddr = tp->ioaddr;
1884
1885 pci_set_power_state(pdev, PCI_D0);
1886 pci_restore_state(pdev);
1887
1888 /* Post 2.x.x versions of the Sleep Image require a reset before
1889 * we can download the Runtime Image. But let's not make users of
1890 * the old firmware pay for the reset.
1891 */
1892 iowrite32(TYPHOON_BOOTCMD_WAKEUP, ioaddr + TYPHOON_REG_COMMAND);
1893 if(typhoon_wait_status(ioaddr, TYPHOON_STATUS_WAITING_FOR_HOST) < 0 ||
1894 (tp->capabilities & TYPHOON_WAKEUP_NEEDS_RESET))
1895 return typhoon_reset(ioaddr, wait_type);
1896
1897 return 0;
1898 }
1899
1900 static int
1901 typhoon_start_runtime(struct typhoon *tp)
1902 {
1903 struct net_device *dev = tp->dev;
1904 void __iomem *ioaddr = tp->ioaddr;
1905 struct cmd_desc xp_cmd;
1906 int err;
1907
1908 typhoon_init_rings(tp);
1909 typhoon_fill_free_ring(tp);
1910
1911 err = typhoon_download_firmware(tp);
1912 if(err < 0) {
1913 printk("%s: cannot load runtime on 3XP\n", tp->name);
1914 goto error_out;
1915 }
1916
1917 if(typhoon_boot_3XP(tp, TYPHOON_STATUS_WAITING_FOR_BOOT) < 0) {
1918 printk("%s: cannot boot 3XP\n", tp->name);
1919 err = -EIO;
1920 goto error_out;
1921 }
1922
1923 INIT_COMMAND_NO_RESPONSE(&xp_cmd, TYPHOON_CMD_SET_MAX_PKT_SIZE);
1924 xp_cmd.parm1 = cpu_to_le16(PKT_BUF_SZ);
1925 err = typhoon_issue_command(tp, 1, &xp_cmd, 0, NULL);
1926 if(err < 0)
1927 goto error_out;
1928
1929 INIT_COMMAND_NO_RESPONSE(&xp_cmd, TYPHOON_CMD_SET_MAC_ADDRESS);
1930 xp_cmd.parm1 = cpu_to_le16(ntohs(*(__be16 *)&dev->dev_addr[0]));
1931 xp_cmd.parm2 = cpu_to_le32(ntohl(*(__be32 *)&dev->dev_addr[2]));
1932 err = typhoon_issue_command(tp, 1, &xp_cmd, 0, NULL);
1933 if(err < 0)
1934 goto error_out;
1935
1936 /* Disable IRQ coalescing -- we can reenable it when 3Com gives
1937 * us some more information on how to control it.
1938 */
1939 INIT_COMMAND_WITH_RESPONSE(&xp_cmd, TYPHOON_CMD_IRQ_COALESCE_CTRL);
1940 xp_cmd.parm1 = 0;
1941 err = typhoon_issue_command(tp, 1, &xp_cmd, 0, NULL);
1942 if(err < 0)
1943 goto error_out;
1944
1945 INIT_COMMAND_NO_RESPONSE(&xp_cmd, TYPHOON_CMD_XCVR_SELECT);
1946 xp_cmd.parm1 = tp->xcvr_select;
1947 err = typhoon_issue_command(tp, 1, &xp_cmd, 0, NULL);
1948 if(err < 0)
1949 goto error_out;
1950
1951 INIT_COMMAND_NO_RESPONSE(&xp_cmd, TYPHOON_CMD_VLAN_TYPE_WRITE);
1952 xp_cmd.parm1 = __constant_cpu_to_le16(ETH_P_8021Q);
1953 err = typhoon_issue_command(tp, 1, &xp_cmd, 0, NULL);
1954 if(err < 0)
1955 goto error_out;
1956
1957 INIT_COMMAND_NO_RESPONSE(&xp_cmd, TYPHOON_CMD_SET_OFFLOAD_TASKS);
1958 spin_lock_bh(&tp->state_lock);
1959 xp_cmd.parm2 = tp->offload;
1960 xp_cmd.parm3 = tp->offload;
1961 err = typhoon_issue_command(tp, 1, &xp_cmd, 0, NULL);
1962 spin_unlock_bh(&tp->state_lock);
1963 if(err < 0)
1964 goto error_out;
1965
1966 typhoon_set_rx_mode(dev);
1967
1968 INIT_COMMAND_NO_RESPONSE(&xp_cmd, TYPHOON_CMD_TX_ENABLE);
1969 err = typhoon_issue_command(tp, 1, &xp_cmd, 0, NULL);
1970 if(err < 0)
1971 goto error_out;
1972
1973 INIT_COMMAND_WITH_RESPONSE(&xp_cmd, TYPHOON_CMD_RX_ENABLE);
1974 err = typhoon_issue_command(tp, 1, &xp_cmd, 0, NULL);
1975 if(err < 0)
1976 goto error_out;
1977
1978 tp->card_state = Running;
1979 smp_wmb();
1980
1981 iowrite32(TYPHOON_INTR_ENABLE_ALL, ioaddr + TYPHOON_REG_INTR_ENABLE);
1982 iowrite32(TYPHOON_INTR_NONE, ioaddr + TYPHOON_REG_INTR_MASK);
1983 typhoon_post_pci_writes(ioaddr);
1984
1985 return 0;
1986
1987 error_out:
1988 typhoon_reset(ioaddr, WaitNoSleep);
1989 typhoon_free_rx_rings(tp);
1990 typhoon_init_rings(tp);
1991 return err;
1992 }
1993
1994 static int
1995 typhoon_stop_runtime(struct typhoon *tp, int wait_type)
1996 {
1997 struct typhoon_indexes *indexes = tp->indexes;
1998 struct transmit_ring *txLo = &tp->txLoRing;
1999 void __iomem *ioaddr = tp->ioaddr;
2000 struct cmd_desc xp_cmd;
2001 int i;
2002
2003 /* Disable interrupts early, since we can't schedule a poll
2004 * when called with !netif_running(). This will be posted
2005 * when we force the posting of the command.
2006 */
2007 iowrite32(TYPHOON_INTR_NONE, ioaddr + TYPHOON_REG_INTR_ENABLE);
2008
2009 INIT_COMMAND_NO_RESPONSE(&xp_cmd, TYPHOON_CMD_RX_DISABLE);
2010 typhoon_issue_command(tp, 1, &xp_cmd, 0, NULL);
2011
2012 /* Wait 1/2 sec for any outstanding transmits to occur
2013 * We'll cleanup after the reset if this times out.
2014 */
2015 for(i = 0; i < TYPHOON_WAIT_TIMEOUT; i++) {
2016 if(indexes->txLoCleared == cpu_to_le32(txLo->lastWrite))
2017 break;
2018 udelay(TYPHOON_UDELAY);
2019 }
2020
2021 if(i == TYPHOON_WAIT_TIMEOUT)
2022 printk(KERN_ERR
2023 "%s: halt timed out waiting for Tx to complete\n",
2024 tp->name);
2025
2026 INIT_COMMAND_NO_RESPONSE(&xp_cmd, TYPHOON_CMD_TX_DISABLE);
2027 typhoon_issue_command(tp, 1, &xp_cmd, 0, NULL);
2028
2029 /* save the statistics so when we bring the interface up again,
2030 * the values reported to userspace are correct.
2031 */
2032 tp->card_state = Sleeping;
2033 smp_wmb();
2034 typhoon_do_get_stats(tp);
2035 memcpy(&tp->stats_saved, &tp->stats, sizeof(struct net_device_stats));
2036
2037 INIT_COMMAND_NO_RESPONSE(&xp_cmd, TYPHOON_CMD_HALT);
2038 typhoon_issue_command(tp, 1, &xp_cmd, 0, NULL);
2039
2040 if(typhoon_wait_status(ioaddr, TYPHOON_STATUS_HALTED) < 0)
2041 printk(KERN_ERR "%s: timed out waiting for 3XP to halt\n",
2042 tp->name);
2043
2044 if(typhoon_reset(ioaddr, wait_type) < 0) {
2045 printk(KERN_ERR "%s: unable to reset 3XP\n", tp->name);
2046 return -ETIMEDOUT;
2047 }
2048
2049 /* cleanup any outstanding Tx packets */
2050 if(indexes->txLoCleared != cpu_to_le32(txLo->lastWrite)) {
2051 indexes->txLoCleared = cpu_to_le32(txLo->lastWrite);
2052 typhoon_clean_tx(tp, &tp->txLoRing, &indexes->txLoCleared);
2053 }
2054
2055 return 0;
2056 }
2057
2058 static void
2059 typhoon_tx_timeout(struct net_device *dev)
2060 {
2061 struct typhoon *tp = netdev_priv(dev);
2062
2063 if(typhoon_reset(tp->ioaddr, WaitNoSleep) < 0) {
2064 printk(KERN_WARNING "%s: could not reset in tx timeout\n",
2065 dev->name);
2066 goto truely_dead;
2067 }
2068
2069 /* If we ever start using the Hi ring, it will need cleaning too */
2070 typhoon_clean_tx(tp, &tp->txLoRing, &tp->indexes->txLoCleared);
2071 typhoon_free_rx_rings(tp);
2072
2073 if(typhoon_start_runtime(tp) < 0) {
2074 printk(KERN_ERR "%s: could not start runtime in tx timeout\n",
2075 dev->name);
2076 goto truely_dead;
2077 }
2078
2079 netif_wake_queue(dev);
2080 return;
2081
2082 truely_dead:
2083 /* Reset the hardware, and turn off carrier to avoid more timeouts */
2084 typhoon_reset(tp->ioaddr, NoWait);
2085 netif_carrier_off(dev);
2086 }
2087
2088 static int
2089 typhoon_open(struct net_device *dev)
2090 {
2091 struct typhoon *tp = netdev_priv(dev);
2092 int err;
2093
2094 err = typhoon_wakeup(tp, WaitSleep);
2095 if(err < 0) {
2096 printk(KERN_ERR "%s: unable to wakeup device\n", dev->name);
2097 goto out_sleep;
2098 }
2099
2100 err = request_irq(dev->irq, &typhoon_interrupt, IRQF_SHARED,
2101 dev->name, dev);
2102 if(err < 0)
2103 goto out_sleep;
2104
2105 napi_enable(&tp->napi);
2106
2107 err = typhoon_start_runtime(tp);
2108 if(err < 0) {
2109 napi_disable(&tp->napi);
2110 goto out_irq;
2111 }
2112
2113 netif_start_queue(dev);
2114 return 0;
2115
2116 out_irq:
2117 free_irq(dev->irq, dev);
2118
2119 out_sleep:
2120 if(typhoon_boot_3XP(tp, TYPHOON_STATUS_WAITING_FOR_HOST) < 0) {
2121 printk(KERN_ERR "%s: unable to reboot into sleep img\n",
2122 dev->name);
2123 typhoon_reset(tp->ioaddr, NoWait);
2124 goto out;
2125 }
2126
2127 if(typhoon_sleep(tp, PCI_D3hot, 0) < 0)
2128 printk(KERN_ERR "%s: unable to go back to sleep\n", dev->name);
2129
2130 out:
2131 return err;
2132 }
2133
2134 static int
2135 typhoon_close(struct net_device *dev)
2136 {
2137 struct typhoon *tp = netdev_priv(dev);
2138
2139 netif_stop_queue(dev);
2140 napi_disable(&tp->napi);
2141
2142 if(typhoon_stop_runtime(tp, WaitSleep) < 0)
2143 printk(KERN_ERR "%s: unable to stop runtime\n", dev->name);
2144
2145 /* Make sure there is no irq handler running on a different CPU. */
2146 typhoon_synchronize_irq(dev->irq);
2147 free_irq(dev->irq, dev);
2148
2149 typhoon_free_rx_rings(tp);
2150 typhoon_init_rings(tp);
2151
2152 if(typhoon_boot_3XP(tp, TYPHOON_STATUS_WAITING_FOR_HOST) < 0)
2153 printk(KERN_ERR "%s: unable to boot sleep image\n", dev->name);
2154
2155 if(typhoon_sleep(tp, PCI_D3hot, 0) < 0)
2156 printk(KERN_ERR "%s: unable to put card to sleep\n", dev->name);
2157
2158 return 0;
2159 }
2160
2161 #ifdef CONFIG_PM
2162 static int
2163 typhoon_resume(struct pci_dev *pdev)
2164 {
2165 struct net_device *dev = pci_get_drvdata(pdev);
2166 struct typhoon *tp = netdev_priv(dev);
2167
2168 /* If we're down, resume when we are upped.
2169 */
2170 if(!netif_running(dev))
2171 return 0;
2172
2173 if(typhoon_wakeup(tp, WaitNoSleep) < 0) {
2174 printk(KERN_ERR "%s: critical: could not wake up in resume\n",
2175 dev->name);
2176 goto reset;
2177 }
2178
2179 if(typhoon_start_runtime(tp) < 0) {
2180 printk(KERN_ERR "%s: critical: could not start runtime in "
2181 "resume\n", dev->name);
2182 goto reset;
2183 }
2184
2185 netif_device_attach(dev);
2186 netif_start_queue(dev);
2187 return 0;
2188
2189 reset:
2190 typhoon_reset(tp->ioaddr, NoWait);
2191 return -EBUSY;
2192 }
2193
2194 static int
2195 typhoon_suspend(struct pci_dev *pdev, pm_message_t state)
2196 {
2197 struct net_device *dev = pci_get_drvdata(pdev);
2198 struct typhoon *tp = netdev_priv(dev);
2199 struct cmd_desc xp_cmd;
2200
2201 /* If we're down, we're already suspended.
2202 */
2203 if(!netif_running(dev))
2204 return 0;
2205
2206 spin_lock_bh(&tp->state_lock);
2207 if(tp->vlgrp && tp->wol_events & TYPHOON_WAKE_MAGIC_PKT) {
2208 spin_unlock_bh(&tp->state_lock);
2209 printk(KERN_ERR "%s: cannot do WAKE_MAGIC with VLANS\n",
2210 dev->name);
2211 return -EBUSY;
2212 }
2213 spin_unlock_bh(&tp->state_lock);
2214
2215 netif_device_detach(dev);
2216
2217 if(typhoon_stop_runtime(tp, WaitNoSleep) < 0) {
2218 printk(KERN_ERR "%s: unable to stop runtime\n", dev->name);
2219 goto need_resume;
2220 }
2221
2222 typhoon_free_rx_rings(tp);
2223 typhoon_init_rings(tp);
2224
2225 if(typhoon_boot_3XP(tp, TYPHOON_STATUS_WAITING_FOR_HOST) < 0) {
2226 printk(KERN_ERR "%s: unable to boot sleep image\n", dev->name);
2227 goto need_resume;
2228 }
2229
2230 INIT_COMMAND_NO_RESPONSE(&xp_cmd, TYPHOON_CMD_SET_MAC_ADDRESS);
2231 xp_cmd.parm1 = cpu_to_le16(ntohs(*(__be16 *)&dev->dev_addr[0]));
2232 xp_cmd.parm2 = cpu_to_le32(ntohl(*(__be32 *)&dev->dev_addr[2]));
2233 if(typhoon_issue_command(tp, 1, &xp_cmd, 0, NULL) < 0) {
2234 printk(KERN_ERR "%s: unable to set mac address in suspend\n",
2235 dev->name);
2236 goto need_resume;
2237 }
2238
2239 INIT_COMMAND_NO_RESPONSE(&xp_cmd, TYPHOON_CMD_SET_RX_FILTER);
2240 xp_cmd.parm1 = TYPHOON_RX_FILTER_DIRECTED | TYPHOON_RX_FILTER_BROADCAST;
2241 if(typhoon_issue_command(tp, 1, &xp_cmd, 0, NULL) < 0) {
2242 printk(KERN_ERR "%s: unable to set rx filter in suspend\n",
2243 dev->name);
2244 goto need_resume;
2245 }
2246
2247 if(typhoon_sleep(tp, pci_choose_state(pdev, state), tp->wol_events) < 0) {
2248 printk(KERN_ERR "%s: unable to put card to sleep\n", dev->name);
2249 goto need_resume;
2250 }
2251
2252 return 0;
2253
2254 need_resume:
2255 typhoon_resume(pdev);
2256 return -EBUSY;
2257 }
2258 #endif
2259
2260 static int __devinit
2261 typhoon_test_mmio(struct pci_dev *pdev)
2262 {
2263 void __iomem *ioaddr = pci_iomap(pdev, 1, 128);
2264 int mode = 0;
2265 u32 val;
2266
2267 if(!ioaddr)
2268 goto out;
2269
2270 if(ioread32(ioaddr + TYPHOON_REG_STATUS) !=
2271 TYPHOON_STATUS_WAITING_FOR_HOST)
2272 goto out_unmap;
2273
2274 iowrite32(TYPHOON_INTR_ALL, ioaddr + TYPHOON_REG_INTR_MASK);
2275 iowrite32(TYPHOON_INTR_ALL, ioaddr + TYPHOON_REG_INTR_STATUS);
2276 iowrite32(TYPHOON_INTR_ALL, ioaddr + TYPHOON_REG_INTR_ENABLE);
2277
2278 /* Ok, see if we can change our interrupt status register by
2279 * sending ourselves an interrupt. If so, then MMIO works.
2280 * The 50usec delay is arbitrary -- it could probably be smaller.
2281 */
2282 val = ioread32(ioaddr + TYPHOON_REG_INTR_STATUS);
2283 if((val & TYPHOON_INTR_SELF) == 0) {
2284 iowrite32(1, ioaddr + TYPHOON_REG_SELF_INTERRUPT);
2285 ioread32(ioaddr + TYPHOON_REG_INTR_STATUS);
2286 udelay(50);
2287 val = ioread32(ioaddr + TYPHOON_REG_INTR_STATUS);
2288 if(val & TYPHOON_INTR_SELF)
2289 mode = 1;
2290 }
2291
2292 iowrite32(TYPHOON_INTR_ALL, ioaddr + TYPHOON_REG_INTR_MASK);
2293 iowrite32(TYPHOON_INTR_ALL, ioaddr + TYPHOON_REG_INTR_STATUS);
2294 iowrite32(TYPHOON_INTR_NONE, ioaddr + TYPHOON_REG_INTR_ENABLE);
2295 ioread32(ioaddr + TYPHOON_REG_INTR_STATUS);
2296
2297 out_unmap:
2298 pci_iounmap(pdev, ioaddr);
2299
2300 out:
2301 if(!mode)
2302 printk(KERN_INFO PFX "falling back to port IO\n");
2303 return mode;
2304 }
2305
2306 static int __devinit
2307 typhoon_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
2308 {
2309 static int did_version = 0;
2310 struct net_device *dev;
2311 struct typhoon *tp;
2312 int card_id = (int) ent->driver_data;
2313 void __iomem *ioaddr;
2314 void *shared;
2315 dma_addr_t shared_dma;
2316 struct cmd_desc xp_cmd;
2317 struct resp_desc xp_resp[3];
2318 int err = 0;
2319 DECLARE_MAC_BUF(mac);
2320
2321 if(!did_version++)
2322 printk(KERN_INFO "%s", version);
2323
2324 dev = alloc_etherdev(sizeof(*tp));
2325 if(dev == NULL) {
2326 printk(ERR_PFX "%s: unable to alloc new net device\n",
2327 pci_name(pdev));
2328 err = -ENOMEM;
2329 goto error_out;
2330 }
2331 SET_NETDEV_DEV(dev, &pdev->dev);
2332
2333 err = pci_enable_device(pdev);
2334 if(err < 0) {
2335 printk(ERR_PFX "%s: unable to enable device\n",
2336 pci_name(pdev));
2337 goto error_out_dev;
2338 }
2339
2340 err = pci_set_mwi(pdev);
2341 if(err < 0) {
2342 printk(ERR_PFX "%s: unable to set MWI\n", pci_name(pdev));
2343 goto error_out_disable;
2344 }
2345
2346 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
2347 if(err < 0) {
2348 printk(ERR_PFX "%s: No usable DMA configuration\n",
2349 pci_name(pdev));
2350 goto error_out_mwi;
2351 }
2352
2353 /* sanity checks on IO and MMIO BARs
2354 */
2355 if(!(pci_resource_flags(pdev, 0) & IORESOURCE_IO)) {
2356 printk(ERR_PFX
2357 "%s: region #1 not a PCI IO resource, aborting\n",
2358 pci_name(pdev));
2359 err = -ENODEV;
2360 goto error_out_mwi;
2361 }
2362 if(pci_resource_len(pdev, 0) < 128) {
2363 printk(ERR_PFX "%s: Invalid PCI IO region size, aborting\n",
2364 pci_name(pdev));
2365 err = -ENODEV;
2366 goto error_out_mwi;
2367 }
2368 if(!(pci_resource_flags(pdev, 1) & IORESOURCE_MEM)) {
2369 printk(ERR_PFX
2370 "%s: region #1 not a PCI MMIO resource, aborting\n",
2371 pci_name(pdev));
2372 err = -ENODEV;
2373 goto error_out_mwi;
2374 }
2375 if(pci_resource_len(pdev, 1) < 128) {
2376 printk(ERR_PFX "%s: Invalid PCI MMIO region size, aborting\n",
2377 pci_name(pdev));
2378 err = -ENODEV;
2379 goto error_out_mwi;
2380 }
2381
2382 err = pci_request_regions(pdev, "typhoon");
2383 if(err < 0) {
2384 printk(ERR_PFX "%s: could not request regions\n",
2385 pci_name(pdev));
2386 goto error_out_mwi;
2387 }
2388
2389 /* map our registers
2390 */
2391 if(use_mmio != 0 && use_mmio != 1)
2392 use_mmio = typhoon_test_mmio(pdev);
2393
2394 ioaddr = pci_iomap(pdev, use_mmio, 128);
2395 if (!ioaddr) {
2396 printk(ERR_PFX "%s: cannot remap registers, aborting\n",
2397 pci_name(pdev));
2398 err = -EIO;
2399 goto error_out_regions;
2400 }
2401
2402 /* allocate pci dma space for rx and tx descriptor rings
2403 */
2404 shared = pci_alloc_consistent(pdev, sizeof(struct typhoon_shared),
2405 &shared_dma);
2406 if(!shared) {
2407 printk(ERR_PFX "%s: could not allocate DMA memory\n",
2408 pci_name(pdev));
2409 err = -ENOMEM;
2410 goto error_out_remap;
2411 }
2412
2413 dev->irq = pdev->irq;
2414 tp = netdev_priv(dev);
2415 tp->shared = (struct typhoon_shared *) shared;
2416 tp->shared_dma = shared_dma;
2417 tp->pdev = pdev;
2418 tp->tx_pdev = pdev;
2419 tp->ioaddr = ioaddr;
2420 tp->tx_ioaddr = ioaddr;
2421 tp->dev = dev;
2422
2423 /* Init sequence:
2424 * 1) Reset the adapter to clear any bad juju
2425 * 2) Reload the sleep image
2426 * 3) Boot the sleep image
2427 * 4) Get the hardware address.
2428 * 5) Put the card to sleep.
2429 */
2430 if (typhoon_reset(ioaddr, WaitSleep) < 0) {
2431 printk(ERR_PFX "%s: could not reset 3XP\n", pci_name(pdev));
2432 err = -EIO;
2433 goto error_out_dma;
2434 }
2435
2436 /* Now that we've reset the 3XP and are sure it's not going to
2437 * write all over memory, enable bus mastering, and save our
2438 * state for resuming after a suspend.
2439 */
2440 pci_set_master(pdev);
2441 pci_save_state(pdev);
2442
2443 /* dev->name is not valid until we register, but we need to
2444 * use some common routines to initialize the card. So that those
2445 * routines print the right name, we keep our oun pointer to the name
2446 */
2447 tp->name = pci_name(pdev);
2448
2449 typhoon_init_interface(tp);
2450 typhoon_init_rings(tp);
2451
2452 if(typhoon_boot_3XP(tp, TYPHOON_STATUS_WAITING_FOR_HOST) < 0) {
2453 printk(ERR_PFX "%s: cannot boot 3XP sleep image\n",
2454 pci_name(pdev));
2455 err = -EIO;
2456 goto error_out_reset;
2457 }
2458
2459 INIT_COMMAND_WITH_RESPONSE(&xp_cmd, TYPHOON_CMD_READ_MAC_ADDRESS);
2460 if(typhoon_issue_command(tp, 1, &xp_cmd, 1, xp_resp) < 0) {
2461 printk(ERR_PFX "%s: cannot read MAC address\n",
2462 pci_name(pdev));
2463 err = -EIO;
2464 goto error_out_reset;
2465 }
2466
2467 *(__be16 *)&dev->dev_addr[0] = htons(le16_to_cpu(xp_resp[0].parm1));
2468 *(__be32 *)&dev->dev_addr[2] = htonl(le32_to_cpu(xp_resp[0].parm2));
2469
2470 if(!is_valid_ether_addr(dev->dev_addr)) {
2471 printk(ERR_PFX "%s: Could not obtain valid ethernet address, "
2472 "aborting\n", pci_name(pdev));
2473 goto error_out_reset;
2474 }
2475
2476 /* Read the Sleep Image version last, so the response is valid
2477 * later when we print out the version reported.
2478 */
2479 INIT_COMMAND_WITH_RESPONSE(&xp_cmd, TYPHOON_CMD_READ_VERSIONS);
2480 if(typhoon_issue_command(tp, 1, &xp_cmd, 3, xp_resp) < 0) {
2481 printk(ERR_PFX "%s: Could not get Sleep Image version\n",
2482 pci_name(pdev));
2483 goto error_out_reset;
2484 }
2485
2486 tp->capabilities = typhoon_card_info[card_id].capabilities;
2487 tp->xcvr_select = TYPHOON_XCVR_AUTONEG;
2488
2489 /* Typhoon 1.0 Sleep Images return one response descriptor to the
2490 * READ_VERSIONS command. Those versions are OK after waking up
2491 * from sleep without needing a reset. Typhoon 1.1+ Sleep Images
2492 * seem to need a little extra help to get started. Since we don't
2493 * know how to nudge it along, just kick it.
2494 */
2495 if(xp_resp[0].numDesc != 0)
2496 tp->capabilities |= TYPHOON_WAKEUP_NEEDS_RESET;
2497
2498 if(typhoon_sleep(tp, PCI_D3hot, 0) < 0) {
2499 printk(ERR_PFX "%s: cannot put adapter to sleep\n",
2500 pci_name(pdev));
2501 err = -EIO;
2502 goto error_out_reset;
2503 }
2504
2505 /* The chip-specific entries in the device structure. */
2506 dev->open = typhoon_open;
2507 dev->hard_start_xmit = typhoon_start_tx;
2508 dev->stop = typhoon_close;
2509 dev->set_multicast_list = typhoon_set_rx_mode;
2510 dev->tx_timeout = typhoon_tx_timeout;
2511 netif_napi_add(dev, &tp->napi, typhoon_poll, 16);
2512 dev->watchdog_timeo = TX_TIMEOUT;
2513 dev->get_stats = typhoon_get_stats;
2514 dev->set_mac_address = typhoon_set_mac_address;
2515 dev->vlan_rx_register = typhoon_vlan_rx_register;
2516
2517 SET_ETHTOOL_OPS(dev, &typhoon_ethtool_ops);
2518
2519 /* We can handle scatter gather, up to 16 entries, and
2520 * we can do IP checksumming (only version 4, doh...)
2521 */
2522 dev->features |= NETIF_F_SG | NETIF_F_IP_CSUM;
2523 dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
2524 dev->features |= NETIF_F_TSO;
2525
2526 if(register_netdev(dev) < 0)
2527 goto error_out_reset;
2528
2529 /* fixup our local name */
2530 tp->name = dev->name;
2531
2532 pci_set_drvdata(pdev, dev);
2533
2534 printk(KERN_INFO "%s: %s at %s 0x%llx, %s\n",
2535 dev->name, typhoon_card_info[card_id].name,
2536 use_mmio ? "MMIO" : "IO",
2537 (unsigned long long)pci_resource_start(pdev, use_mmio),
2538 print_mac(mac, dev->dev_addr));
2539
2540 /* xp_resp still contains the response to the READ_VERSIONS command.
2541 * For debugging, let the user know what version he has.
2542 */
2543 if(xp_resp[0].numDesc == 0) {
2544 /* This is the Typhoon 1.0 type Sleep Image, last 16 bits
2545 * of version is Month/Day of build.
2546 */
2547 u16 monthday = le32_to_cpu(xp_resp[0].parm2) & 0xffff;
2548 printk(KERN_INFO "%s: Typhoon 1.0 Sleep Image built "
2549 "%02u/%02u/2000\n", dev->name, monthday >> 8,
2550 monthday & 0xff);
2551 } else if(xp_resp[0].numDesc == 2) {
2552 /* This is the Typhoon 1.1+ type Sleep Image
2553 */
2554 u32 sleep_ver = le32_to_cpu(xp_resp[0].parm2);
2555 u8 *ver_string = (u8 *) &xp_resp[1];
2556 ver_string[25] = 0;
2557 printk(KERN_INFO "%s: Typhoon 1.1+ Sleep Image version "
2558 "%02x.%03x.%03x %s\n", dev->name, sleep_ver >> 24,
2559 (sleep_ver >> 12) & 0xfff, sleep_ver & 0xfff,
2560 ver_string);
2561 } else {
2562 printk(KERN_WARNING "%s: Unknown Sleep Image version "
2563 "(%u:%04x)\n", dev->name, xp_resp[0].numDesc,
2564 le32_to_cpu(xp_resp[0].parm2));
2565 }
2566
2567 return 0;
2568
2569 error_out_reset:
2570 typhoon_reset(ioaddr, NoWait);
2571
2572 error_out_dma:
2573 pci_free_consistent(pdev, sizeof(struct typhoon_shared),
2574 shared, shared_dma);
2575 error_out_remap:
2576 pci_iounmap(pdev, ioaddr);
2577 error_out_regions:
2578 pci_release_regions(pdev);
2579 error_out_mwi:
2580 pci_clear_mwi(pdev);
2581 error_out_disable:
2582 pci_disable_device(pdev);
2583 error_out_dev:
2584 free_netdev(dev);
2585 error_out:
2586 return err;
2587 }
2588
2589 static void __devexit
2590 typhoon_remove_one(struct pci_dev *pdev)
2591 {
2592 struct net_device *dev = pci_get_drvdata(pdev);
2593 struct typhoon *tp = netdev_priv(dev);
2594
2595 unregister_netdev(dev);
2596 pci_set_power_state(pdev, PCI_D0);
2597 pci_restore_state(pdev);
2598 typhoon_reset(tp->ioaddr, NoWait);
2599 pci_iounmap(pdev, tp->ioaddr);
2600 pci_free_consistent(pdev, sizeof(struct typhoon_shared),
2601 tp->shared, tp->shared_dma);
2602 pci_release_regions(pdev);
2603 pci_clear_mwi(pdev);
2604 pci_disable_device(pdev);
2605 pci_set_drvdata(pdev, NULL);
2606 free_netdev(dev);
2607 }
2608
2609 static struct pci_driver typhoon_driver = {
2610 .name = DRV_MODULE_NAME,
2611 .id_table = typhoon_pci_tbl,
2612 .probe = typhoon_init_one,
2613 .remove = __devexit_p(typhoon_remove_one),
2614 #ifdef CONFIG_PM
2615 .suspend = typhoon_suspend,
2616 .resume = typhoon_resume,
2617 #endif
2618 };
2619
2620 static int __init
2621 typhoon_init(void)
2622 {
2623 return pci_register_driver(&typhoon_driver);
2624 }
2625
2626 static void __exit
2627 typhoon_cleanup(void)
2628 {
2629 pci_unregister_driver(&typhoon_driver);
2630 }
2631
2632 module_init(typhoon_init);
2633 module_exit(typhoon_cleanup);
WRT350N Kernel Patches