1 /*****************************************************************************
2 * *
3 * File: cxgb2.c *
4 * $Revision: 1.25 $ *
5 * $Date: 2005/06/22 00:43:25 $ *
6 * Description: *
7 * Chelsio 10Gb Ethernet Driver. *
8 * *
9 * This program is free software; you can redistribute it and/or modify *
10 * it under the terms of the GNU General Public License, version 2, as *
11 * published by the Free Software Foundation. *
12 * *
13 * You should have received a copy of the GNU General Public License along *
14 * with this program; if not, see <http://www.gnu.org/licenses/>. *
15 * *
16 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED *
17 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF *
18 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. *
19 * *
20 * http://www.chelsio.com *
21 * *
22 * Copyright (c) 2003 - 2005 Chelsio Communications, Inc. *
23 * All rights reserved. *
24 * *
25 * Maintainers: maintainers@chelsio.com *
26 * *
27 * Authors: Dimitrios Michailidis <dm@chelsio.com> *
28 * Tina Yang <tainay@chelsio.com> *
29 * Felix Marti <felix@chelsio.com> *
30 * Scott Bardone <sbardone@chelsio.com> *
31 * Kurt Ottaway <kottaway@chelsio.com> *
32 * Frank DiMambro <frank@chelsio.com> *
33 * *
34 * History: *
35 * *
36 ****************************************************************************/
37
38 #include "common.h"
39 #include <linux/module.h>
40 #include <linux/pci.h>
41 #include <linux/netdevice.h>
42 #include <linux/etherdevice.h>
43 #include <linux/if_vlan.h>
44 #include <linux/mii.h>
45 #include <linux/sockios.h>
46 #include <linux/dma-mapping.h>
47 #include <linux/uaccess.h>
48
49 #include "cpl5_cmd.h"
50 #include "regs.h"
51 #include "gmac.h"
52 #include "cphy.h"
53 #include "sge.h"
54 #include "tp.h"
55 #include "espi.h"
56 #include "elmer0.h"
57
58 #include <linux/workqueue.h>
59
schedule_mac_stats_update(struct adapter * ap,int secs)60 static inline void schedule_mac_stats_update(struct adapter *ap, int secs)
61 {
62 schedule_delayed_work(&ap->stats_update_task, secs * HZ);
63 }
64
cancel_mac_stats_update(struct adapter * ap)65 static inline void cancel_mac_stats_update(struct adapter *ap)
66 {
67 cancel_delayed_work(&ap->stats_update_task);
68 }
69
70 #define MAX_CMDQ_ENTRIES 16384
71 #define MAX_CMDQ1_ENTRIES 1024
72 #define MAX_RX_BUFFERS 16384
73 #define MAX_RX_JUMBO_BUFFERS 16384
74 #define MAX_TX_BUFFERS_HIGH 16384U
75 #define MAX_TX_BUFFERS_LOW 1536U
76 #define MAX_TX_BUFFERS 1460U
77 #define MIN_FL_ENTRIES 32
78
79 #define DFLT_MSG_ENABLE (NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK | \
80 NETIF_MSG_TIMER | NETIF_MSG_IFDOWN | NETIF_MSG_IFUP |\
81 NETIF_MSG_RX_ERR | NETIF_MSG_TX_ERR)
82
83 /*
84 * The EEPROM is actually bigger but only the first few bytes are used so we
85 * only report those.
86 */
87 #define EEPROM_SIZE 32
88
89 MODULE_DESCRIPTION(DRV_DESCRIPTION);
90 MODULE_AUTHOR("Chelsio Communications");
91 MODULE_LICENSE("GPL");
92
93 static int dflt_msg_enable = DFLT_MSG_ENABLE;
94
95 module_param(dflt_msg_enable, int, 0);
96 MODULE_PARM_DESC(dflt_msg_enable, "Chelsio T1 default message enable bitmap");
97
98 #define HCLOCK 0x0
99 #define LCLOCK 0x1
100
101 /* T1 cards powersave mode */
102 static int t1_clock(struct adapter *adapter, int mode);
103 static int t1powersave = 1; /* HW default is powersave mode. */
104
105 module_param(t1powersave, int, 0);
106 MODULE_PARM_DESC(t1powersave, "Enable/Disable T1 powersaving mode");
107
108 static int disable_msi = 0;
109 module_param(disable_msi, int, 0);
110 MODULE_PARM_DESC(disable_msi, "Disable Message Signaled Interrupt (MSI)");
111
112 /*
113 * Setup MAC to receive the types of packets we want.
114 */
t1_set_rxmode(struct net_device * dev)115 static void t1_set_rxmode(struct net_device *dev)
116 {
117 struct adapter *adapter = dev->ml_priv;
118 struct cmac *mac = adapter->port[dev->if_port].mac;
119 struct t1_rx_mode rm;
120
121 rm.dev = dev;
122 mac->ops->set_rx_mode(mac, &rm);
123 }
124
link_report(struct port_info * p)125 static void link_report(struct port_info *p)
126 {
127 if (!netif_carrier_ok(p->dev))
128 netdev_info(p->dev, "link down\n");
129 else {
130 const char *s = "10Mbps";
131
132 switch (p->link_config.speed) {
133 case SPEED_10000: s = "10Gbps"; break;
134 case SPEED_1000: s = "1000Mbps"; break;
135 case SPEED_100: s = "100Mbps"; break;
136 }
137
138 netdev_info(p->dev, "link up, %s, %s-duplex\n",
139 s, p->link_config.duplex == DUPLEX_FULL
140 ? "full" : "half");
141 }
142 }
143
t1_link_negotiated(struct adapter * adapter,int port_id,int link_stat,int speed,int duplex,int pause)144 void t1_link_negotiated(struct adapter *adapter, int port_id, int link_stat,
145 int speed, int duplex, int pause)
146 {
147 struct port_info *p = &adapter->port[port_id];
148
149 if (link_stat != netif_carrier_ok(p->dev)) {
150 if (link_stat)
151 netif_carrier_on(p->dev);
152 else
153 netif_carrier_off(p->dev);
154 link_report(p);
155
156 /* multi-ports: inform toe */
157 if ((speed > 0) && (adapter->params.nports > 1)) {
158 unsigned int sched_speed = 10;
159 switch (speed) {
160 case SPEED_1000:
161 sched_speed = 1000;
162 break;
163 case SPEED_100:
164 sched_speed = 100;
165 break;
166 case SPEED_10:
167 sched_speed = 10;
168 break;
169 }
170 t1_sched_update_parms(adapter->sge, port_id, 0, sched_speed);
171 }
172 }
173 }
174
link_start(struct port_info * p)175 static void link_start(struct port_info *p)
176 {
177 struct cmac *mac = p->mac;
178
179 mac->ops->reset(mac);
180 if (mac->ops->macaddress_set)
181 mac->ops->macaddress_set(mac, p->dev->dev_addr);
182 t1_set_rxmode(p->dev);
183 t1_link_start(p->phy, mac, &p->link_config);
184 mac->ops->enable(mac, MAC_DIRECTION_RX | MAC_DIRECTION_TX);
185 }
186
enable_hw_csum(struct adapter * adapter)187 static void enable_hw_csum(struct adapter *adapter)
188 {
189 if (adapter->port[0].dev->hw_features & NETIF_F_TSO)
190 t1_tp_set_ip_checksum_offload(adapter->tp, 1); /* for TSO only */
191 t1_tp_set_tcp_checksum_offload(adapter->tp, 1);
192 }
193
194 /*
195 * Things to do upon first use of a card.
196 * This must run with the rtnl lock held.
197 */
cxgb_up(struct adapter * adapter)198 static int cxgb_up(struct adapter *adapter)
199 {
200 int err = 0;
201
202 if (!(adapter->flags & FULL_INIT_DONE)) {
203 err = t1_init_hw_modules(adapter);
204 if (err)
205 goto out_err;
206
207 enable_hw_csum(adapter);
208 adapter->flags |= FULL_INIT_DONE;
209 }
210
211 t1_interrupts_clear(adapter);
212
213 adapter->params.has_msi = !disable_msi && !pci_enable_msi(adapter->pdev);
214 err = request_irq(adapter->pdev->irq, t1_interrupt,
215 adapter->params.has_msi ? 0 : IRQF_SHARED,
216 adapter->name, adapter);
217 if (err) {
218 if (adapter->params.has_msi)
219 pci_disable_msi(adapter->pdev);
220
221 goto out_err;
222 }
223
224 t1_sge_start(adapter->sge);
225 t1_interrupts_enable(adapter);
226 out_err:
227 return err;
228 }
229
230 /*
231 * Release resources when all the ports have been stopped.
232 */
cxgb_down(struct adapter * adapter)233 static void cxgb_down(struct adapter *adapter)
234 {
235 t1_sge_stop(adapter->sge);
236 t1_interrupts_disable(adapter);
237 free_irq(adapter->pdev->irq, adapter);
238 if (adapter->params.has_msi)
239 pci_disable_msi(adapter->pdev);
240 }
241
cxgb_open(struct net_device * dev)242 static int cxgb_open(struct net_device *dev)
243 {
244 int err;
245 struct adapter *adapter = dev->ml_priv;
246 int other_ports = adapter->open_device_map & PORT_MASK;
247
248 napi_enable(&adapter->napi);
249 if (!adapter->open_device_map && (err = cxgb_up(adapter)) < 0) {
250 napi_disable(&adapter->napi);
251 return err;
252 }
253
254 __set_bit(dev->if_port, &adapter->open_device_map);
255 link_start(&adapter->port[dev->if_port]);
256 netif_start_queue(dev);
257 if (!other_ports && adapter->params.stats_update_period)
258 schedule_mac_stats_update(adapter,
259 adapter->params.stats_update_period);
260
261 t1_vlan_mode(adapter, dev->features);
262 return 0;
263 }
264
cxgb_close(struct net_device * dev)265 static int cxgb_close(struct net_device *dev)
266 {
267 struct adapter *adapter = dev->ml_priv;
268 struct port_info *p = &adapter->port[dev->if_port];
269 struct cmac *mac = p->mac;
270
271 netif_stop_queue(dev);
272 napi_disable(&adapter->napi);
273 mac->ops->disable(mac, MAC_DIRECTION_TX | MAC_DIRECTION_RX);
274 netif_carrier_off(dev);
275
276 clear_bit(dev->if_port, &adapter->open_device_map);
277 if (adapter->params.stats_update_period &&
278 !(adapter->open_device_map & PORT_MASK)) {
279 /* Stop statistics accumulation. */
280 smp_mb__after_atomic();
281 spin_lock(&adapter->work_lock); /* sync with update task */
282 spin_unlock(&adapter->work_lock);
283 cancel_mac_stats_update(adapter);
284 }
285
286 if (!adapter->open_device_map)
287 cxgb_down(adapter);
288 return 0;
289 }
290
t1_get_stats(struct net_device * dev)291 static struct net_device_stats *t1_get_stats(struct net_device *dev)
292 {
293 struct adapter *adapter = dev->ml_priv;
294 struct port_info *p = &adapter->port[dev->if_port];
295 struct net_device_stats *ns = &dev->stats;
296 const struct cmac_statistics *pstats;
297
298 /* Do a full update of the MAC stats */
299 pstats = p->mac->ops->statistics_update(p->mac,
300 MAC_STATS_UPDATE_FULL);
301
302 ns->tx_packets = pstats->TxUnicastFramesOK +
303 pstats->TxMulticastFramesOK + pstats->TxBroadcastFramesOK;
304
305 ns->rx_packets = pstats->RxUnicastFramesOK +
306 pstats->RxMulticastFramesOK + pstats->RxBroadcastFramesOK;
307
308 ns->tx_bytes = pstats->TxOctetsOK;
309 ns->rx_bytes = pstats->RxOctetsOK;
310
311 ns->tx_errors = pstats->TxLateCollisions + pstats->TxLengthErrors +
312 pstats->TxUnderrun + pstats->TxFramesAbortedDueToXSCollisions;
313 ns->rx_errors = pstats->RxDataErrors + pstats->RxJabberErrors +
314 pstats->RxFCSErrors + pstats->RxAlignErrors +
315 pstats->RxSequenceErrors + pstats->RxFrameTooLongErrors +
316 pstats->RxSymbolErrors + pstats->RxRuntErrors;
317
318 ns->multicast = pstats->RxMulticastFramesOK;
319 ns->collisions = pstats->TxTotalCollisions;
320
321 /* detailed rx_errors */
322 ns->rx_length_errors = pstats->RxFrameTooLongErrors +
323 pstats->RxJabberErrors;
324 ns->rx_over_errors = 0;
325 ns->rx_crc_errors = pstats->RxFCSErrors;
326 ns->rx_frame_errors = pstats->RxAlignErrors;
327 ns->rx_fifo_errors = 0;
328 ns->rx_missed_errors = 0;
329
330 /* detailed tx_errors */
331 ns->tx_aborted_errors = pstats->TxFramesAbortedDueToXSCollisions;
332 ns->tx_carrier_errors = 0;
333 ns->tx_fifo_errors = pstats->TxUnderrun;
334 ns->tx_heartbeat_errors = 0;
335 ns->tx_window_errors = pstats->TxLateCollisions;
336 return ns;
337 }
338
get_msglevel(struct net_device * dev)339 static u32 get_msglevel(struct net_device *dev)
340 {
341 struct adapter *adapter = dev->ml_priv;
342
343 return adapter->msg_enable;
344 }
345
set_msglevel(struct net_device * dev,u32 val)346 static void set_msglevel(struct net_device *dev, u32 val)
347 {
348 struct adapter *adapter = dev->ml_priv;
349
350 adapter->msg_enable = val;
351 }
352
353 static const char stats_strings[][ETH_GSTRING_LEN] = {
354 "TxOctetsOK",
355 "TxOctetsBad",
356 "TxUnicastFramesOK",
357 "TxMulticastFramesOK",
358 "TxBroadcastFramesOK",
359 "TxPauseFrames",
360 "TxFramesWithDeferredXmissions",
361 "TxLateCollisions",
362 "TxTotalCollisions",
363 "TxFramesAbortedDueToXSCollisions",
364 "TxUnderrun",
365 "TxLengthErrors",
366 "TxInternalMACXmitError",
367 "TxFramesWithExcessiveDeferral",
368 "TxFCSErrors",
369 "TxJumboFramesOk",
370 "TxJumboOctetsOk",
371
372 "RxOctetsOK",
373 "RxOctetsBad",
374 "RxUnicastFramesOK",
375 "RxMulticastFramesOK",
376 "RxBroadcastFramesOK",
377 "RxPauseFrames",
378 "RxFCSErrors",
379 "RxAlignErrors",
380 "RxSymbolErrors",
381 "RxDataErrors",
382 "RxSequenceErrors",
383 "RxRuntErrors",
384 "RxJabberErrors",
385 "RxInternalMACRcvError",
386 "RxInRangeLengthErrors",
387 "RxOutOfRangeLengthField",
388 "RxFrameTooLongErrors",
389 "RxJumboFramesOk",
390 "RxJumboOctetsOk",
391
392 /* Port stats */
393 "RxCsumGood",
394 "TxCsumOffload",
395 "TxTso",
396 "RxVlan",
397 "TxVlan",
398 "TxNeedHeadroom",
399
400 /* Interrupt stats */
401 "rx drops",
402 "pure_rsps",
403 "unhandled irqs",
404 "respQ_empty",
405 "respQ_overflow",
406 "freelistQ_empty",
407 "pkt_too_big",
408 "pkt_mismatch",
409 "cmdQ_full0",
410 "cmdQ_full1",
411
412 "espi_DIP2ParityErr",
413 "espi_DIP4Err",
414 "espi_RxDrops",
415 "espi_TxDrops",
416 "espi_RxOvfl",
417 "espi_ParityErr"
418 };
419
420 #define T2_REGMAP_SIZE (3 * 1024)
421
get_regs_len(struct net_device * dev)422 static int get_regs_len(struct net_device *dev)
423 {
424 return T2_REGMAP_SIZE;
425 }
426
get_drvinfo(struct net_device * dev,struct ethtool_drvinfo * info)427 static void get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
428 {
429 struct adapter *adapter = dev->ml_priv;
430
431 strlcpy(info->driver, DRV_NAME, sizeof(info->driver));
432 strlcpy(info->bus_info, pci_name(adapter->pdev),
433 sizeof(info->bus_info));
434 }
435
get_sset_count(struct net_device * dev,int sset)436 static int get_sset_count(struct net_device *dev, int sset)
437 {
438 switch (sset) {
439 case ETH_SS_STATS:
440 return ARRAY_SIZE(stats_strings);
441 default:
442 return -EOPNOTSUPP;
443 }
444 }
445
get_strings(struct net_device * dev,u32 stringset,u8 * data)446 static void get_strings(struct net_device *dev, u32 stringset, u8 *data)
447 {
448 if (stringset == ETH_SS_STATS)
449 memcpy(data, stats_strings, sizeof(stats_strings));
450 }
451
get_stats(struct net_device * dev,struct ethtool_stats * stats,u64 * data)452 static void get_stats(struct net_device *dev, struct ethtool_stats *stats,
453 u64 *data)
454 {
455 struct adapter *adapter = dev->ml_priv;
456 struct cmac *mac = adapter->port[dev->if_port].mac;
457 const struct cmac_statistics *s;
458 const struct sge_intr_counts *t;
459 struct sge_port_stats ss;
460
461 s = mac->ops->statistics_update(mac, MAC_STATS_UPDATE_FULL);
462 t = t1_sge_get_intr_counts(adapter->sge);
463 t1_sge_get_port_stats(adapter->sge, dev->if_port, &ss);
464
465 *data++ = s->TxOctetsOK;
466 *data++ = s->TxOctetsBad;
467 *data++ = s->TxUnicastFramesOK;
468 *data++ = s->TxMulticastFramesOK;
469 *data++ = s->TxBroadcastFramesOK;
470 *data++ = s->TxPauseFrames;
471 *data++ = s->TxFramesWithDeferredXmissions;
472 *data++ = s->TxLateCollisions;
473 *data++ = s->TxTotalCollisions;
474 *data++ = s->TxFramesAbortedDueToXSCollisions;
475 *data++ = s->TxUnderrun;
476 *data++ = s->TxLengthErrors;
477 *data++ = s->TxInternalMACXmitError;
478 *data++ = s->TxFramesWithExcessiveDeferral;
479 *data++ = s->TxFCSErrors;
480 *data++ = s->TxJumboFramesOK;
481 *data++ = s->TxJumboOctetsOK;
482
483 *data++ = s->RxOctetsOK;
484 *data++ = s->RxOctetsBad;
485 *data++ = s->RxUnicastFramesOK;
486 *data++ = s->RxMulticastFramesOK;
487 *data++ = s->RxBroadcastFramesOK;
488 *data++ = s->RxPauseFrames;
489 *data++ = s->RxFCSErrors;
490 *data++ = s->RxAlignErrors;
491 *data++ = s->RxSymbolErrors;
492 *data++ = s->RxDataErrors;
493 *data++ = s->RxSequenceErrors;
494 *data++ = s->RxRuntErrors;
495 *data++ = s->RxJabberErrors;
496 *data++ = s->RxInternalMACRcvError;
497 *data++ = s->RxInRangeLengthErrors;
498 *data++ = s->RxOutOfRangeLengthField;
499 *data++ = s->RxFrameTooLongErrors;
500 *data++ = s->RxJumboFramesOK;
501 *data++ = s->RxJumboOctetsOK;
502
503 *data++ = ss.rx_cso_good;
504 *data++ = ss.tx_cso;
505 *data++ = ss.tx_tso;
506 *data++ = ss.vlan_xtract;
507 *data++ = ss.vlan_insert;
508 *data++ = ss.tx_need_hdrroom;
509
510 *data++ = t->rx_drops;
511 *data++ = t->pure_rsps;
512 *data++ = t->unhandled_irqs;
513 *data++ = t->respQ_empty;
514 *data++ = t->respQ_overflow;
515 *data++ = t->freelistQ_empty;
516 *data++ = t->pkt_too_big;
517 *data++ = t->pkt_mismatch;
518 *data++ = t->cmdQ_full[0];
519 *data++ = t->cmdQ_full[1];
520
521 if (adapter->espi) {
522 const struct espi_intr_counts *e;
523
524 e = t1_espi_get_intr_counts(adapter->espi);
525 *data++ = e->DIP2_parity_err;
526 *data++ = e->DIP4_err;
527 *data++ = e->rx_drops;
528 *data++ = e->tx_drops;
529 *data++ = e->rx_ovflw;
530 *data++ = e->parity_err;
531 }
532 }
533
reg_block_dump(struct adapter * ap,void * buf,unsigned int start,unsigned int end)534 static inline void reg_block_dump(struct adapter *ap, void *buf,
535 unsigned int start, unsigned int end)
536 {
537 u32 *p = buf + start;
538
539 for ( ; start <= end; start += sizeof(u32))
540 *p++ = readl(ap->regs + start);
541 }
542
get_regs(struct net_device * dev,struct ethtool_regs * regs,void * buf)543 static void get_regs(struct net_device *dev, struct ethtool_regs *regs,
544 void *buf)
545 {
546 struct adapter *ap = dev->ml_priv;
547
548 /*
549 * Version scheme: bits 0..9: chip version, bits 10..15: chip revision
550 */
551 regs->version = 2;
552
553 memset(buf, 0, T2_REGMAP_SIZE);
554 reg_block_dump(ap, buf, 0, A_SG_RESPACCUTIMER);
555 reg_block_dump(ap, buf, A_MC3_CFG, A_MC4_INT_CAUSE);
556 reg_block_dump(ap, buf, A_TPI_ADDR, A_TPI_PAR);
557 reg_block_dump(ap, buf, A_TP_IN_CONFIG, A_TP_TX_DROP_COUNT);
558 reg_block_dump(ap, buf, A_RAT_ROUTE_CONTROL, A_RAT_INTR_CAUSE);
559 reg_block_dump(ap, buf, A_CSPI_RX_AE_WM, A_CSPI_INTR_ENABLE);
560 reg_block_dump(ap, buf, A_ESPI_SCH_TOKEN0, A_ESPI_GOSTAT);
561 reg_block_dump(ap, buf, A_ULP_ULIMIT, A_ULP_PIO_CTRL);
562 reg_block_dump(ap, buf, A_PL_ENABLE, A_PL_CAUSE);
563 reg_block_dump(ap, buf, A_MC5_CONFIG, A_MC5_MASK_WRITE_CMD);
564 }
565
get_link_ksettings(struct net_device * dev,struct ethtool_link_ksettings * cmd)566 static int get_link_ksettings(struct net_device *dev,
567 struct ethtool_link_ksettings *cmd)
568 {
569 struct adapter *adapter = dev->ml_priv;
570 struct port_info *p = &adapter->port[dev->if_port];
571 u32 supported, advertising;
572
573 supported = p->link_config.supported;
574 advertising = p->link_config.advertising;
575
576 if (netif_carrier_ok(dev)) {
577 cmd->base.speed = p->link_config.speed;
578 cmd->base.duplex = p->link_config.duplex;
579 } else {
580 cmd->base.speed = SPEED_UNKNOWN;
581 cmd->base.duplex = DUPLEX_UNKNOWN;
582 }
583
584 cmd->base.port = (supported & SUPPORTED_TP) ? PORT_TP : PORT_FIBRE;
585 cmd->base.phy_address = p->phy->mdio.prtad;
586 cmd->base.autoneg = p->link_config.autoneg;
587
588 ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.supported,
589 supported);
590 ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.advertising,
591 advertising);
592
593 return 0;
594 }
595
speed_duplex_to_caps(int speed,int duplex)596 static int speed_duplex_to_caps(int speed, int duplex)
597 {
598 int cap = 0;
599
600 switch (speed) {
601 case SPEED_10:
602 if (duplex == DUPLEX_FULL)
603 cap = SUPPORTED_10baseT_Full;
604 else
605 cap = SUPPORTED_10baseT_Half;
606 break;
607 case SPEED_100:
608 if (duplex == DUPLEX_FULL)
609 cap = SUPPORTED_100baseT_Full;
610 else
611 cap = SUPPORTED_100baseT_Half;
612 break;
613 case SPEED_1000:
614 if (duplex == DUPLEX_FULL)
615 cap = SUPPORTED_1000baseT_Full;
616 else
617 cap = SUPPORTED_1000baseT_Half;
618 break;
619 case SPEED_10000:
620 if (duplex == DUPLEX_FULL)
621 cap = SUPPORTED_10000baseT_Full;
622 }
623 return cap;
624 }
625
626 #define ADVERTISED_MASK (ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full | \
627 ADVERTISED_100baseT_Half | ADVERTISED_100baseT_Full | \
628 ADVERTISED_1000baseT_Half | ADVERTISED_1000baseT_Full | \
629 ADVERTISED_10000baseT_Full)
630
set_link_ksettings(struct net_device * dev,const struct ethtool_link_ksettings * cmd)631 static int set_link_ksettings(struct net_device *dev,
632 const struct ethtool_link_ksettings *cmd)
633 {
634 struct adapter *adapter = dev->ml_priv;
635 struct port_info *p = &adapter->port[dev->if_port];
636 struct link_config *lc = &p->link_config;
637 u32 advertising;
638
639 ethtool_convert_link_mode_to_legacy_u32(&advertising,
640 cmd->link_modes.advertising);
641
642 if (!(lc->supported & SUPPORTED_Autoneg))
643 return -EOPNOTSUPP; /* can't change speed/duplex */
644
645 if (cmd->base.autoneg == AUTONEG_DISABLE) {
646 u32 speed = cmd->base.speed;
647 int cap = speed_duplex_to_caps(speed, cmd->base.duplex);
648
649 if (!(lc->supported & cap) || (speed == SPEED_1000))
650 return -EINVAL;
651 lc->requested_speed = speed;
652 lc->requested_duplex = cmd->base.duplex;
653 lc->advertising = 0;
654 } else {
655 advertising &= ADVERTISED_MASK;
656 if (advertising & (advertising - 1))
657 advertising = lc->supported;
658 advertising &= lc->supported;
659 if (!advertising)
660 return -EINVAL;
661 lc->requested_speed = SPEED_INVALID;
662 lc->requested_duplex = DUPLEX_INVALID;
663 lc->advertising = advertising | ADVERTISED_Autoneg;
664 }
665 lc->autoneg = cmd->base.autoneg;
666 if (netif_running(dev))
667 t1_link_start(p->phy, p->mac, lc);
668 return 0;
669 }
670
get_pauseparam(struct net_device * dev,struct ethtool_pauseparam * epause)671 static void get_pauseparam(struct net_device *dev,
672 struct ethtool_pauseparam *epause)
673 {
674 struct adapter *adapter = dev->ml_priv;
675 struct port_info *p = &adapter->port[dev->if_port];
676
677 epause->autoneg = (p->link_config.requested_fc & PAUSE_AUTONEG) != 0;
678 epause->rx_pause = (p->link_config.fc & PAUSE_RX) != 0;
679 epause->tx_pause = (p->link_config.fc & PAUSE_TX) != 0;
680 }
681
set_pauseparam(struct net_device * dev,struct ethtool_pauseparam * epause)682 static int set_pauseparam(struct net_device *dev,
683 struct ethtool_pauseparam *epause)
684 {
685 struct adapter *adapter = dev->ml_priv;
686 struct port_info *p = &adapter->port[dev->if_port];
687 struct link_config *lc = &p->link_config;
688
689 if (epause->autoneg == AUTONEG_DISABLE)
690 lc->requested_fc = 0;
691 else if (lc->supported & SUPPORTED_Autoneg)
692 lc->requested_fc = PAUSE_AUTONEG;
693 else
694 return -EINVAL;
695
696 if (epause->rx_pause)
697 lc->requested_fc |= PAUSE_RX;
698 if (epause->tx_pause)
699 lc->requested_fc |= PAUSE_TX;
700 if (lc->autoneg == AUTONEG_ENABLE) {
701 if (netif_running(dev))
702 t1_link_start(p->phy, p->mac, lc);
703 } else {
704 lc->fc = lc->requested_fc & (PAUSE_RX | PAUSE_TX);
705 if (netif_running(dev))
706 p->mac->ops->set_speed_duplex_fc(p->mac, -1, -1,
707 lc->fc);
708 }
709 return 0;
710 }
711
get_sge_param(struct net_device * dev,struct ethtool_ringparam * e)712 static void get_sge_param(struct net_device *dev, struct ethtool_ringparam *e)
713 {
714 struct adapter *adapter = dev->ml_priv;
715 int jumbo_fl = t1_is_T1B(adapter) ? 1 : 0;
716
717 e->rx_max_pending = MAX_RX_BUFFERS;
718 e->rx_jumbo_max_pending = MAX_RX_JUMBO_BUFFERS;
719 e->tx_max_pending = MAX_CMDQ_ENTRIES;
720
721 e->rx_pending = adapter->params.sge.freelQ_size[!jumbo_fl];
722 e->rx_jumbo_pending = adapter->params.sge.freelQ_size[jumbo_fl];
723 e->tx_pending = adapter->params.sge.cmdQ_size[0];
724 }
725
set_sge_param(struct net_device * dev,struct ethtool_ringparam * e)726 static int set_sge_param(struct net_device *dev, struct ethtool_ringparam *e)
727 {
728 struct adapter *adapter = dev->ml_priv;
729 int jumbo_fl = t1_is_T1B(adapter) ? 1 : 0;
730
731 if (e->rx_pending > MAX_RX_BUFFERS || e->rx_mini_pending ||
732 e->rx_jumbo_pending > MAX_RX_JUMBO_BUFFERS ||
733 e->tx_pending > MAX_CMDQ_ENTRIES ||
734 e->rx_pending < MIN_FL_ENTRIES ||
735 e->rx_jumbo_pending < MIN_FL_ENTRIES ||
736 e->tx_pending < (adapter->params.nports + 1) * (MAX_SKB_FRAGS + 1))
737 return -EINVAL;
738
739 if (adapter->flags & FULL_INIT_DONE)
740 return -EBUSY;
741
742 adapter->params.sge.freelQ_size[!jumbo_fl] = e->rx_pending;
743 adapter->params.sge.freelQ_size[jumbo_fl] = e->rx_jumbo_pending;
744 adapter->params.sge.cmdQ_size[0] = e->tx_pending;
745 adapter->params.sge.cmdQ_size[1] = e->tx_pending > MAX_CMDQ1_ENTRIES ?
746 MAX_CMDQ1_ENTRIES : e->tx_pending;
747 return 0;
748 }
749
set_coalesce(struct net_device * dev,struct ethtool_coalesce * c)750 static int set_coalesce(struct net_device *dev, struct ethtool_coalesce *c)
751 {
752 struct adapter *adapter = dev->ml_priv;
753
754 adapter->params.sge.rx_coalesce_usecs = c->rx_coalesce_usecs;
755 adapter->params.sge.coalesce_enable = c->use_adaptive_rx_coalesce;
756 adapter->params.sge.sample_interval_usecs = c->rate_sample_interval;
757 t1_sge_set_coalesce_params(adapter->sge, &adapter->params.sge);
758 return 0;
759 }
760
get_coalesce(struct net_device * dev,struct ethtool_coalesce * c)761 static int get_coalesce(struct net_device *dev, struct ethtool_coalesce *c)
762 {
763 struct adapter *adapter = dev->ml_priv;
764
765 c->rx_coalesce_usecs = adapter->params.sge.rx_coalesce_usecs;
766 c->rate_sample_interval = adapter->params.sge.sample_interval_usecs;
767 c->use_adaptive_rx_coalesce = adapter->params.sge.coalesce_enable;
768 return 0;
769 }
770
get_eeprom_len(struct net_device * dev)771 static int get_eeprom_len(struct net_device *dev)
772 {
773 struct adapter *adapter = dev->ml_priv;
774
775 return t1_is_asic(adapter) ? EEPROM_SIZE : 0;
776 }
777
778 #define EEPROM_MAGIC(ap) \
779 (PCI_VENDOR_ID_CHELSIO | ((ap)->params.chip_version << 16))
780
get_eeprom(struct net_device * dev,struct ethtool_eeprom * e,u8 * data)781 static int get_eeprom(struct net_device *dev, struct ethtool_eeprom *e,
782 u8 *data)
783 {
784 int i;
785 u8 buf[EEPROM_SIZE] __attribute__((aligned(4)));
786 struct adapter *adapter = dev->ml_priv;
787
788 e->magic = EEPROM_MAGIC(adapter);
789 for (i = e->offset & ~3; i < e->offset + e->len; i += sizeof(u32))
790 t1_seeprom_read(adapter, i, (__le32 *)&buf[i]);
791 memcpy(data, buf + e->offset, e->len);
792 return 0;
793 }
794
795 static const struct ethtool_ops t1_ethtool_ops = {
796 .supported_coalesce_params = ETHTOOL_COALESCE_RX_USECS |
797 ETHTOOL_COALESCE_USE_ADAPTIVE_RX |
798 ETHTOOL_COALESCE_RATE_SAMPLE_INTERVAL,
799 .get_drvinfo = get_drvinfo,
800 .get_msglevel = get_msglevel,
801 .set_msglevel = set_msglevel,
802 .get_ringparam = get_sge_param,
803 .set_ringparam = set_sge_param,
804 .get_coalesce = get_coalesce,
805 .set_coalesce = set_coalesce,
806 .get_eeprom_len = get_eeprom_len,
807 .get_eeprom = get_eeprom,
808 .get_pauseparam = get_pauseparam,
809 .set_pauseparam = set_pauseparam,
810 .get_link = ethtool_op_get_link,
811 .get_strings = get_strings,
812 .get_sset_count = get_sset_count,
813 .get_ethtool_stats = get_stats,
814 .get_regs_len = get_regs_len,
815 .get_regs = get_regs,
816 .get_link_ksettings = get_link_ksettings,
817 .set_link_ksettings = set_link_ksettings,
818 };
819
t1_ioctl(struct net_device * dev,struct ifreq * req,int cmd)820 static int t1_ioctl(struct net_device *dev, struct ifreq *req, int cmd)
821 {
822 struct adapter *adapter = dev->ml_priv;
823 struct mdio_if_info *mdio = &adapter->port[dev->if_port].phy->mdio;
824
825 return mdio_mii_ioctl(mdio, if_mii(req), cmd);
826 }
827
t1_change_mtu(struct net_device * dev,int new_mtu)828 static int t1_change_mtu(struct net_device *dev, int new_mtu)
829 {
830 int ret;
831 struct adapter *adapter = dev->ml_priv;
832 struct cmac *mac = adapter->port[dev->if_port].mac;
833
834 if (!mac->ops->set_mtu)
835 return -EOPNOTSUPP;
836 if ((ret = mac->ops->set_mtu(mac, new_mtu)))
837 return ret;
838 dev->mtu = new_mtu;
839 return 0;
840 }
841
t1_set_mac_addr(struct net_device * dev,void * p)842 static int t1_set_mac_addr(struct net_device *dev, void *p)
843 {
844 struct adapter *adapter = dev->ml_priv;
845 struct cmac *mac = adapter->port[dev->if_port].mac;
846 struct sockaddr *addr = p;
847
848 if (!mac->ops->macaddress_set)
849 return -EOPNOTSUPP;
850
851 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
852 mac->ops->macaddress_set(mac, dev->dev_addr);
853 return 0;
854 }
855
t1_fix_features(struct net_device * dev,netdev_features_t features)856 static netdev_features_t t1_fix_features(struct net_device *dev,
857 netdev_features_t features)
858 {
859 /*
860 * Since there is no support for separate rx/tx vlan accel
861 * enable/disable make sure tx flag is always in same state as rx.
862 */
863 if (features & NETIF_F_HW_VLAN_CTAG_RX)
864 features |= NETIF_F_HW_VLAN_CTAG_TX;
865 else
866 features &= ~NETIF_F_HW_VLAN_CTAG_TX;
867
868 return features;
869 }
870
t1_set_features(struct net_device * dev,netdev_features_t features)871 static int t1_set_features(struct net_device *dev, netdev_features_t features)
872 {
873 netdev_features_t changed = dev->features ^ features;
874 struct adapter *adapter = dev->ml_priv;
875
876 if (changed & NETIF_F_HW_VLAN_CTAG_RX)
877 t1_vlan_mode(adapter, features);
878
879 return 0;
880 }
881 #ifdef CONFIG_NET_POLL_CONTROLLER
t1_netpoll(struct net_device * dev)882 static void t1_netpoll(struct net_device *dev)
883 {
884 unsigned long flags;
885 struct adapter *adapter = dev->ml_priv;
886
887 local_irq_save(flags);
888 t1_interrupt(adapter->pdev->irq, adapter);
889 local_irq_restore(flags);
890 }
891 #endif
892
893 /*
894 * Periodic accumulation of MAC statistics. This is used only if the MAC
895 * does not have any other way to prevent stats counter overflow.
896 */
mac_stats_task(struct work_struct * work)897 static void mac_stats_task(struct work_struct *work)
898 {
899 int i;
900 struct adapter *adapter =
901 container_of(work, struct adapter, stats_update_task.work);
902
903 for_each_port(adapter, i) {
904 struct port_info *p = &adapter->port[i];
905
906 if (netif_running(p->dev))
907 p->mac->ops->statistics_update(p->mac,
908 MAC_STATS_UPDATE_FAST);
909 }
910
911 /* Schedule the next statistics update if any port is active. */
912 spin_lock(&adapter->work_lock);
913 if (adapter->open_device_map & PORT_MASK)
914 schedule_mac_stats_update(adapter,
915 adapter->params.stats_update_period);
916 spin_unlock(&adapter->work_lock);
917 }
918
919 /*
920 * Processes elmer0 external interrupts in process context.
921 */
ext_intr_task(struct work_struct * work)922 static void ext_intr_task(struct work_struct *work)
923 {
924 struct adapter *adapter =
925 container_of(work, struct adapter, ext_intr_handler_task);
926
927 t1_elmer0_ext_intr_handler(adapter);
928
929 /* Now reenable external interrupts */
930 spin_lock_irq(&adapter->async_lock);
931 adapter->slow_intr_mask |= F_PL_INTR_EXT;
932 writel(F_PL_INTR_EXT, adapter->regs + A_PL_CAUSE);
933 writel(adapter->slow_intr_mask | F_PL_INTR_SGE_DATA,
934 adapter->regs + A_PL_ENABLE);
935 spin_unlock_irq(&adapter->async_lock);
936 }
937
938 /*
939 * Interrupt-context handler for elmer0 external interrupts.
940 */
t1_elmer0_ext_intr(struct adapter * adapter)941 void t1_elmer0_ext_intr(struct adapter *adapter)
942 {
943 /*
944 * Schedule a task to handle external interrupts as we require
945 * a process context. We disable EXT interrupts in the interim
946 * and let the task reenable them when it's done.
947 */
948 adapter->slow_intr_mask &= ~F_PL_INTR_EXT;
949 writel(adapter->slow_intr_mask | F_PL_INTR_SGE_DATA,
950 adapter->regs + A_PL_ENABLE);
951 schedule_work(&adapter->ext_intr_handler_task);
952 }
953
t1_fatal_err(struct adapter * adapter)954 void t1_fatal_err(struct adapter *adapter)
955 {
956 if (adapter->flags & FULL_INIT_DONE) {
957 t1_sge_stop(adapter->sge);
958 t1_interrupts_disable(adapter);
959 }
960 pr_alert("%s: encountered fatal error, operation suspended\n",
961 adapter->name);
962 }
963
964 static const struct net_device_ops cxgb_netdev_ops = {
965 .ndo_open = cxgb_open,
966 .ndo_stop = cxgb_close,
967 .ndo_start_xmit = t1_start_xmit,
968 .ndo_get_stats = t1_get_stats,
969 .ndo_validate_addr = eth_validate_addr,
970 .ndo_set_rx_mode = t1_set_rxmode,
971 .ndo_do_ioctl = t1_ioctl,
972 .ndo_change_mtu = t1_change_mtu,
973 .ndo_set_mac_address = t1_set_mac_addr,
974 .ndo_fix_features = t1_fix_features,
975 .ndo_set_features = t1_set_features,
976 #ifdef CONFIG_NET_POLL_CONTROLLER
977 .ndo_poll_controller = t1_netpoll,
978 #endif
979 };
980
init_one(struct pci_dev * pdev,const struct pci_device_id * ent)981 static int init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
982 {
983 int i, err, pci_using_dac = 0;
984 unsigned long mmio_start, mmio_len;
985 const struct board_info *bi;
986 struct adapter *adapter = NULL;
987 struct port_info *pi;
988
989 err = pci_enable_device(pdev);
990 if (err)
991 return err;
992
993 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
994 pr_err("%s: cannot find PCI device memory base address\n",
995 pci_name(pdev));
996 err = -ENODEV;
997 goto out_disable_pdev;
998 }
999
1000 if (!dma_set_mask(&pdev->dev, DMA_BIT_MASK(64))) {
1001 pci_using_dac = 1;
1002
1003 if (dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64))) {
1004 pr_err("%s: unable to obtain 64-bit DMA for coherent allocations\n",
1005 pci_name(pdev));
1006 err = -ENODEV;
1007 goto out_disable_pdev;
1008 }
1009
1010 } else if ((err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32))) != 0) {
1011 pr_err("%s: no usable DMA configuration\n", pci_name(pdev));
1012 goto out_disable_pdev;
1013 }
1014
1015 err = pci_request_regions(pdev, DRV_NAME);
1016 if (err) {
1017 pr_err("%s: cannot obtain PCI resources\n", pci_name(pdev));
1018 goto out_disable_pdev;
1019 }
1020
1021 pci_set_master(pdev);
1022
1023 mmio_start = pci_resource_start(pdev, 0);
1024 mmio_len = pci_resource_len(pdev, 0);
1025 bi = t1_get_board_info(ent->driver_data);
1026
1027 for (i = 0; i < bi->port_number; ++i) {
1028 struct net_device *netdev;
1029
1030 netdev = alloc_etherdev(adapter ? 0 : sizeof(*adapter));
1031 if (!netdev) {
1032 err = -ENOMEM;
1033 goto out_free_dev;
1034 }
1035
1036 SET_NETDEV_DEV(netdev, &pdev->dev);
1037
1038 if (!adapter) {
1039 adapter = netdev_priv(netdev);
1040 adapter->pdev = pdev;
1041 adapter->port[0].dev = netdev; /* so we don't leak it */
1042
1043 adapter->regs = ioremap(mmio_start, mmio_len);
1044 if (!adapter->regs) {
1045 pr_err("%s: cannot map device registers\n",
1046 pci_name(pdev));
1047 err = -ENOMEM;
1048 goto out_free_dev;
1049 }
1050
1051 if (t1_get_board_rev(adapter, bi, &adapter->params)) {
1052 err = -ENODEV; /* Can't handle this chip rev */
1053 goto out_free_dev;
1054 }
1055
1056 adapter->name = pci_name(pdev);
1057 adapter->msg_enable = dflt_msg_enable;
1058 adapter->mmio_len = mmio_len;
1059
1060 spin_lock_init(&adapter->tpi_lock);
1061 spin_lock_init(&adapter->work_lock);
1062 spin_lock_init(&adapter->async_lock);
1063 spin_lock_init(&adapter->mac_lock);
1064
1065 INIT_WORK(&adapter->ext_intr_handler_task,
1066 ext_intr_task);
1067 INIT_DELAYED_WORK(&adapter->stats_update_task,
1068 mac_stats_task);
1069
1070 pci_set_drvdata(pdev, netdev);
1071 }
1072
1073 pi = &adapter->port[i];
1074 pi->dev = netdev;
1075 netif_carrier_off(netdev);
1076 netdev->irq = pdev->irq;
1077 netdev->if_port = i;
1078 netdev->mem_start = mmio_start;
1079 netdev->mem_end = mmio_start + mmio_len - 1;
1080 netdev->ml_priv = adapter;
1081 netdev->hw_features |= NETIF_F_SG | NETIF_F_IP_CSUM |
1082 NETIF_F_RXCSUM;
1083 netdev->features |= NETIF_F_SG | NETIF_F_IP_CSUM |
1084 NETIF_F_RXCSUM | NETIF_F_LLTX;
1085
1086 if (pci_using_dac)
1087 netdev->features |= NETIF_F_HIGHDMA;
1088 if (vlan_tso_capable(adapter)) {
1089 netdev->features |=
1090 NETIF_F_HW_VLAN_CTAG_TX |
1091 NETIF_F_HW_VLAN_CTAG_RX;
1092 netdev->hw_features |= NETIF_F_HW_VLAN_CTAG_RX;
1093
1094 /* T204: disable TSO */
1095 if (!(is_T2(adapter)) || bi->port_number != 4) {
1096 netdev->hw_features |= NETIF_F_TSO;
1097 netdev->features |= NETIF_F_TSO;
1098 }
1099 }
1100
1101 netdev->netdev_ops = &cxgb_netdev_ops;
1102 netdev->hard_header_len += (netdev->hw_features & NETIF_F_TSO) ?
1103 sizeof(struct cpl_tx_pkt_lso) : sizeof(struct cpl_tx_pkt);
1104
1105 netif_napi_add(netdev, &adapter->napi, t1_poll, 64);
1106
1107 netdev->ethtool_ops = &t1_ethtool_ops;
1108
1109 switch (bi->board) {
1110 case CHBT_BOARD_CHT110:
1111 case CHBT_BOARD_N110:
1112 case CHBT_BOARD_N210:
1113 case CHBT_BOARD_CHT210:
1114 netdev->max_mtu = PM3393_MAX_FRAME_SIZE -
1115 (ETH_HLEN + ETH_FCS_LEN);
1116 break;
1117 case CHBT_BOARD_CHN204:
1118 netdev->max_mtu = VSC7326_MAX_MTU;
1119 break;
1120 default:
1121 netdev->max_mtu = ETH_DATA_LEN;
1122 break;
1123 }
1124 }
1125
1126 if (t1_init_sw_modules(adapter, bi) < 0) {
1127 err = -ENODEV;
1128 goto out_free_dev;
1129 }
1130
1131 /*
1132 * The card is now ready to go. If any errors occur during device
1133 * registration we do not fail the whole card but rather proceed only
1134 * with the ports we manage to register successfully. However we must
1135 * register at least one net device.
1136 */
1137 for (i = 0; i < bi->port_number; ++i) {
1138 err = register_netdev(adapter->port[i].dev);
1139 if (err)
1140 pr_warn("%s: cannot register net device %s, skipping\n",
1141 pci_name(pdev), adapter->port[i].dev->name);
1142 else {
1143 /*
1144 * Change the name we use for messages to the name of
1145 * the first successfully registered interface.
1146 */
1147 if (!adapter->registered_device_map)
1148 adapter->name = adapter->port[i].dev->name;
1149
1150 __set_bit(i, &adapter->registered_device_map);
1151 }
1152 }
1153 if (!adapter->registered_device_map) {
1154 pr_err("%s: could not register any net devices\n",
1155 pci_name(pdev));
1156 goto out_release_adapter_res;
1157 }
1158
1159 pr_info("%s: %s (rev %d), %s %dMHz/%d-bit\n",
1160 adapter->name, bi->desc, adapter->params.chip_revision,
1161 adapter->params.pci.is_pcix ? "PCIX" : "PCI",
1162 adapter->params.pci.speed, adapter->params.pci.width);
1163
1164 /*
1165 * Set the T1B ASIC and memory clocks.
1166 */
1167 if (t1powersave)
1168 adapter->t1powersave = LCLOCK; /* HW default is powersave mode. */
1169 else
1170 adapter->t1powersave = HCLOCK;
1171 if (t1_is_T1B(adapter))
1172 t1_clock(adapter, t1powersave);
1173
1174 return 0;
1175
1176 out_release_adapter_res:
1177 t1_free_sw_modules(adapter);
1178 out_free_dev:
1179 if (adapter) {
1180 if (adapter->regs)
1181 iounmap(adapter->regs);
1182 for (i = bi->port_number - 1; i >= 0; --i)
1183 if (adapter->port[i].dev)
1184 free_netdev(adapter->port[i].dev);
1185 }
1186 pci_release_regions(pdev);
1187 out_disable_pdev:
1188 pci_disable_device(pdev);
1189 return err;
1190 }
1191
bit_bang(struct adapter * adapter,int bitdata,int nbits)1192 static void bit_bang(struct adapter *adapter, int bitdata, int nbits)
1193 {
1194 int data;
1195 int i;
1196 u32 val;
1197
1198 enum {
1199 S_CLOCK = 1 << 3,
1200 S_DATA = 1 << 4
1201 };
1202
1203 for (i = (nbits - 1); i > -1; i--) {
1204
1205 udelay(50);
1206
1207 data = ((bitdata >> i) & 0x1);
1208 __t1_tpi_read(adapter, A_ELMER0_GPO, &val);
1209
1210 if (data)
1211 val |= S_DATA;
1212 else
1213 val &= ~S_DATA;
1214
1215 udelay(50);
1216
1217 /* Set SCLOCK low */
1218 val &= ~S_CLOCK;
1219 __t1_tpi_write(adapter, A_ELMER0_GPO, val);
1220
1221 udelay(50);
1222
1223 /* Write SCLOCK high */
1224 val |= S_CLOCK;
1225 __t1_tpi_write(adapter, A_ELMER0_GPO, val);
1226
1227 }
1228 }
1229
t1_clock(struct adapter * adapter,int mode)1230 static int t1_clock(struct adapter *adapter, int mode)
1231 {
1232 u32 val;
1233 int M_CORE_VAL;
1234 int M_MEM_VAL;
1235
1236 enum {
1237 M_CORE_BITS = 9,
1238 T_CORE_VAL = 0,
1239 T_CORE_BITS = 2,
1240 N_CORE_VAL = 0,
1241 N_CORE_BITS = 2,
1242 M_MEM_BITS = 9,
1243 T_MEM_VAL = 0,
1244 T_MEM_BITS = 2,
1245 N_MEM_VAL = 0,
1246 N_MEM_BITS = 2,
1247 NP_LOAD = 1 << 17,
1248 S_LOAD_MEM = 1 << 5,
1249 S_LOAD_CORE = 1 << 6,
1250 S_CLOCK = 1 << 3
1251 };
1252
1253 if (!t1_is_T1B(adapter))
1254 return -ENODEV; /* Can't re-clock this chip. */
1255
1256 if (mode & 2)
1257 return 0; /* show current mode. */
1258
1259 if ((adapter->t1powersave & 1) == (mode & 1))
1260 return -EALREADY; /* ASIC already running in mode. */
1261
1262 if ((mode & 1) == HCLOCK) {
1263 M_CORE_VAL = 0x14;
1264 M_MEM_VAL = 0x18;
1265 adapter->t1powersave = HCLOCK; /* overclock */
1266 } else {
1267 M_CORE_VAL = 0xe;
1268 M_MEM_VAL = 0x10;
1269 adapter->t1powersave = LCLOCK; /* underclock */
1270 }
1271
1272 /* Don't interrupt this serial stream! */
1273 spin_lock(&adapter->tpi_lock);
1274
1275 /* Initialize for ASIC core */
1276 __t1_tpi_read(adapter, A_ELMER0_GPO, &val);
1277 val |= NP_LOAD;
1278 udelay(50);
1279 __t1_tpi_write(adapter, A_ELMER0_GPO, val);
1280 udelay(50);
1281 __t1_tpi_read(adapter, A_ELMER0_GPO, &val);
1282 val &= ~S_LOAD_CORE;
1283 val &= ~S_CLOCK;
1284 __t1_tpi_write(adapter, A_ELMER0_GPO, val);
1285 udelay(50);
1286
1287 /* Serial program the ASIC clock synthesizer */
1288 bit_bang(adapter, T_CORE_VAL, T_CORE_BITS);
1289 bit_bang(adapter, N_CORE_VAL, N_CORE_BITS);
1290 bit_bang(adapter, M_CORE_VAL, M_CORE_BITS);
1291 udelay(50);
1292
1293 /* Finish ASIC core */
1294 __t1_tpi_read(adapter, A_ELMER0_GPO, &val);
1295 val |= S_LOAD_CORE;
1296 udelay(50);
1297 __t1_tpi_write(adapter, A_ELMER0_GPO, val);
1298 udelay(50);
1299 __t1_tpi_read(adapter, A_ELMER0_GPO, &val);
1300 val &= ~S_LOAD_CORE;
1301 udelay(50);
1302 __t1_tpi_write(adapter, A_ELMER0_GPO, val);
1303 udelay(50);
1304
1305 /* Initialize for memory */
1306 __t1_tpi_read(adapter, A_ELMER0_GPO, &val);
1307 val |= NP_LOAD;
1308 udelay(50);
1309 __t1_tpi_write(adapter, A_ELMER0_GPO, val);
1310 udelay(50);
1311 __t1_tpi_read(adapter, A_ELMER0_GPO, &val);
1312 val &= ~S_LOAD_MEM;
1313 val &= ~S_CLOCK;
1314 udelay(50);
1315 __t1_tpi_write(adapter, A_ELMER0_GPO, val);
1316 udelay(50);
1317
1318 /* Serial program the memory clock synthesizer */
1319 bit_bang(adapter, T_MEM_VAL, T_MEM_BITS);
1320 bit_bang(adapter, N_MEM_VAL, N_MEM_BITS);
1321 bit_bang(adapter, M_MEM_VAL, M_MEM_BITS);
1322 udelay(50);
1323
1324 /* Finish memory */
1325 __t1_tpi_read(adapter, A_ELMER0_GPO, &val);
1326 val |= S_LOAD_MEM;
1327 udelay(50);
1328 __t1_tpi_write(adapter, A_ELMER0_GPO, val);
1329 udelay(50);
1330 __t1_tpi_read(adapter, A_ELMER0_GPO, &val);
1331 val &= ~S_LOAD_MEM;
1332 udelay(50);
1333 __t1_tpi_write(adapter, A_ELMER0_GPO, val);
1334
1335 spin_unlock(&adapter->tpi_lock);
1336
1337 return 0;
1338 }
1339
t1_sw_reset(struct pci_dev * pdev)1340 static inline void t1_sw_reset(struct pci_dev *pdev)
1341 {
1342 pci_write_config_dword(pdev, A_PCICFG_PM_CSR, 3);
1343 pci_write_config_dword(pdev, A_PCICFG_PM_CSR, 0);
1344 }
1345
remove_one(struct pci_dev * pdev)1346 static void remove_one(struct pci_dev *pdev)
1347 {
1348 struct net_device *dev = pci_get_drvdata(pdev);
1349 struct adapter *adapter = dev->ml_priv;
1350 int i;
1351
1352 for_each_port(adapter, i) {
1353 if (test_bit(i, &adapter->registered_device_map))
1354 unregister_netdev(adapter->port[i].dev);
1355 }
1356
1357 t1_free_sw_modules(adapter);
1358 iounmap(adapter->regs);
1359
1360 while (--i >= 0) {
1361 if (adapter->port[i].dev)
1362 free_netdev(adapter->port[i].dev);
1363 }
1364
1365 pci_release_regions(pdev);
1366 pci_disable_device(pdev);
1367 t1_sw_reset(pdev);
1368 }
1369
1370 static struct pci_driver cxgb_pci_driver = {
1371 .name = DRV_NAME,
1372 .id_table = t1_pci_tbl,
1373 .probe = init_one,
1374 .remove = remove_one,
1375 };
1376
1377 module_pci_driver(cxgb_pci_driver);
1378
