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sched: make early bootup sched_clock() use safer
[wrt350n-kernel.git] / drivers / net / cxgb3 / cxgb3_main.c
blobfd2e05bbb9036fd8eac062caa7338651e0cf8baa
1 /*
2 * Copyright (c) 2003-2007 Chelsio, Inc. All rights reserved.
3 *
4 * This software is available to you under a choice of one of two
5 * licenses. You may choose to be licensed under the terms of the GNU
6 * General Public License (GPL) Version 2, available from the file
7 * COPYING in the main directory of this source tree, or the
8 * OpenIB.org BSD license below:
9 *
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
12 * conditions are met:
13 *
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
16 * disclaimer.
17 *
18 * - Redistributions in binary form must reproduce the above
19 * copyright notice, this list of conditions and the following
20 * disclaimer in the documentation and/or other materials
21 * provided with the distribution.
22 *
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
30 * SOFTWARE.
31 */
32 #include <linux/module.h>
33 #include <linux/moduleparam.h>
34 #include <linux/init.h>
35 #include <linux/pci.h>
36 #include <linux/dma-mapping.h>
37 #include <linux/netdevice.h>
38 #include <linux/etherdevice.h>
39 #include <linux/if_vlan.h>
40 #include <linux/mii.h>
41 #include <linux/sockios.h>
42 #include <linux/workqueue.h>
43 #include <linux/proc_fs.h>
44 #include <linux/rtnetlink.h>
45 #include <linux/firmware.h>
46 #include <linux/log2.h>
47 #include <asm/uaccess.h>
48
49 #include "common.h"
50 #include "cxgb3_ioctl.h"
51 #include "regs.h"
52 #include "cxgb3_offload.h"
53 #include "version.h"
54
55 #include "cxgb3_ctl_defs.h"
56 #include "t3_cpl.h"
57 #include "firmware_exports.h"
58
59 enum {
60 MAX_TXQ_ENTRIES = 16384,
61 MAX_CTRL_TXQ_ENTRIES = 1024,
62 MAX_RSPQ_ENTRIES = 16384,
63 MAX_RX_BUFFERS = 16384,
64 MAX_RX_JUMBO_BUFFERS = 16384,
65 MIN_TXQ_ENTRIES = 4,
66 MIN_CTRL_TXQ_ENTRIES = 4,
67 MIN_RSPQ_ENTRIES = 32,
68 MIN_FL_ENTRIES = 32
69 };
70
71 #define PORT_MASK ((1 << MAX_NPORTS) - 1)
72
73 #define DFLT_MSG_ENABLE (NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK | \
74 NETIF_MSG_TIMER | NETIF_MSG_IFDOWN | NETIF_MSG_IFUP |\
75 NETIF_MSG_RX_ERR | NETIF_MSG_TX_ERR)
76
77 #define EEPROM_MAGIC 0x38E2F10C
78
79 #define CH_DEVICE(devid, idx) \
80 { PCI_VENDOR_ID_CHELSIO, devid, PCI_ANY_ID, PCI_ANY_ID, 0, 0, idx }
81
82 static const struct pci_device_id cxgb3_pci_tbl[] = {
83 CH_DEVICE(0x20, 0), /* PE9000 */
84 CH_DEVICE(0x21, 1), /* T302E */
85 CH_DEVICE(0x22, 2), /* T310E */
86 CH_DEVICE(0x23, 3), /* T320X */
87 CH_DEVICE(0x24, 1), /* T302X */
88 CH_DEVICE(0x25, 3), /* T320E */
89 CH_DEVICE(0x26, 2), /* T310X */
90 CH_DEVICE(0x30, 2), /* T3B10 */
91 CH_DEVICE(0x31, 3), /* T3B20 */
92 CH_DEVICE(0x32, 1), /* T3B02 */
93 {0,}
94 };
95
96 MODULE_DESCRIPTION(DRV_DESC);
97 MODULE_AUTHOR("Chelsio Communications");
98 MODULE_LICENSE("Dual BSD/GPL");
99 MODULE_VERSION(DRV_VERSION);
100 MODULE_DEVICE_TABLE(pci, cxgb3_pci_tbl);
101
102 static int dflt_msg_enable = DFLT_MSG_ENABLE;
103
104 module_param(dflt_msg_enable, int, 0644);
105 MODULE_PARM_DESC(dflt_msg_enable, "Chelsio T3 default message enable bitmap");
106
107 /*
108 * The driver uses the best interrupt scheme available on a platform in the
109 * order MSI-X, MSI, legacy pin interrupts. This parameter determines which
110 * of these schemes the driver may consider as follows:
111 *
112 * msi = 2: choose from among all three options
113 * msi = 1: only consider MSI and pin interrupts
114 * msi = 0: force pin interrupts
115 */
116 static int msi = 2;
117
118 module_param(msi, int, 0644);
119 MODULE_PARM_DESC(msi, "whether to use MSI or MSI-X");
120
121 /*
122 * The driver enables offload as a default.
123 * To disable it, use ofld_disable = 1.
124 */
125
126 static int ofld_disable = 0;
127
128 module_param(ofld_disable, int, 0644);
129 MODULE_PARM_DESC(ofld_disable, "whether to enable offload at init time or not");
130
131 /*
132 * We have work elements that we need to cancel when an interface is taken
133 * down. Normally the work elements would be executed by keventd but that
134 * can deadlock because of linkwatch. If our close method takes the rtnl
135 * lock and linkwatch is ahead of our work elements in keventd, linkwatch
136 * will block keventd as it needs the rtnl lock, and we'll deadlock waiting
137 * for our work to complete. Get our own work queue to solve this.
138 */
139 static struct workqueue_struct *cxgb3_wq;
140
141 /**
142 * link_report - show link status and link speed/duplex
143 * @p: the port whose settings are to be reported
144 *
145 * Shows the link status, speed, and duplex of a port.
146 */
147 static void link_report(struct net_device *dev)
148 {
149 if (!netif_carrier_ok(dev))
150 printk(KERN_INFO "%s: link down\n", dev->name);
151 else {
152 const char *s = "10Mbps";
153 const struct port_info *p = netdev_priv(dev);
154
155 switch (p->link_config.speed) {
156 case SPEED_10000:
157 s = "10Gbps";
158 break;
159 case SPEED_1000:
160 s = "1000Mbps";
161 break;
162 case SPEED_100:
163 s = "100Mbps";
164 break;
165 }
166
167 printk(KERN_INFO "%s: link up, %s, %s-duplex\n", dev->name, s,
168 p->link_config.duplex == DUPLEX_FULL ? "full" : "half");
169 }
170 }
171
172 /**
173 * t3_os_link_changed - handle link status changes
174 * @adapter: the adapter associated with the link change
175 * @port_id: the port index whose limk status has changed
176 * @link_stat: the new status of the link
177 * @speed: the new speed setting
178 * @duplex: the new duplex setting
179 * @pause: the new flow-control setting
180 *
181 * This is the OS-dependent handler for link status changes. The OS
182 * neutral handler takes care of most of the processing for these events,
183 * then calls this handler for any OS-specific processing.
184 */
185 void t3_os_link_changed(struct adapter *adapter, int port_id, int link_stat,
186 int speed, int duplex, int pause)
187 {
188 struct net_device *dev = adapter->port[port_id];
189 struct port_info *pi = netdev_priv(dev);
190 struct cmac *mac = &pi->mac;
191
192 /* Skip changes from disabled ports. */
193 if (!netif_running(dev))
194 return;
195
196 if (link_stat != netif_carrier_ok(dev)) {
197 if (link_stat) {
198 t3_mac_enable(mac, MAC_DIRECTION_RX);
199 netif_carrier_on(dev);
200 } else {
201 netif_carrier_off(dev);
202 pi->phy.ops->power_down(&pi->phy, 1);
203 t3_mac_disable(mac, MAC_DIRECTION_RX);
204 t3_link_start(&pi->phy, mac, &pi->link_config);
205 }
206
207 link_report(dev);
208 }
209 }
210
211 static void cxgb_set_rxmode(struct net_device *dev)
212 {
213 struct t3_rx_mode rm;
214 struct port_info *pi = netdev_priv(dev);
215
216 init_rx_mode(&rm, dev, dev->mc_list);
217 t3_mac_set_rx_mode(&pi->mac, &rm);
218 }
219
220 /**
221 * link_start - enable a port
222 * @dev: the device to enable
223 *
224 * Performs the MAC and PHY actions needed to enable a port.
225 */
226 static void link_start(struct net_device *dev)
227 {
228 struct t3_rx_mode rm;
229 struct port_info *pi = netdev_priv(dev);
230 struct cmac *mac = &pi->mac;
231
232 init_rx_mode(&rm, dev, dev->mc_list);
233 t3_mac_reset(mac);
234 t3_mac_set_mtu(mac, dev->mtu);
235 t3_mac_set_address(mac, 0, dev->dev_addr);
236 t3_mac_set_rx_mode(mac, &rm);
237 t3_link_start(&pi->phy, mac, &pi->link_config);
238 t3_mac_enable(mac, MAC_DIRECTION_RX | MAC_DIRECTION_TX);
239 }
240
241 static inline void cxgb_disable_msi(struct adapter *adapter)
242 {
243 if (adapter->flags & USING_MSIX) {
244 pci_disable_msix(adapter->pdev);
245 adapter->flags &= ~USING_MSIX;
246 } else if (adapter->flags & USING_MSI) {
247 pci_disable_msi(adapter->pdev);
248 adapter->flags &= ~USING_MSI;
249 }
250 }
251
252 /*
253 * Interrupt handler for asynchronous events used with MSI-X.
254 */
255 static irqreturn_t t3_async_intr_handler(int irq, void *cookie)
256 {
257 t3_slow_intr_handler(cookie);
258 return IRQ_HANDLED;
259 }
260
261 /*
262 * Name the MSI-X interrupts.
263 */
264 static void name_msix_vecs(struct adapter *adap)
265 {
266 int i, j, msi_idx = 1, n = sizeof(adap->msix_info[0].desc) - 1;
267
268 snprintf(adap->msix_info[0].desc, n, "%s", adap->name);
269 adap->msix_info[0].desc[n] = 0;
270
271 for_each_port(adap, j) {
272 struct net_device *d = adap->port[j];
273 const struct port_info *pi = netdev_priv(d);
274
275 for (i = 0; i < pi->nqsets; i++, msi_idx++) {
276 snprintf(adap->msix_info[msi_idx].desc, n,
277 "%s (queue %d)", d->name, i);
278 adap->msix_info[msi_idx].desc[n] = 0;
279 }
280 }
281 }
282
283 static int request_msix_data_irqs(struct adapter *adap)
284 {
285 int i, j, err, qidx = 0;
286
287 for_each_port(adap, i) {
288 int nqsets = adap2pinfo(adap, i)->nqsets;
289
290 for (j = 0; j < nqsets; ++j) {
291 err = request_irq(adap->msix_info[qidx + 1].vec,
292 t3_intr_handler(adap,
293 adap->sge.qs[qidx].
294 rspq.polling), 0,
295 adap->msix_info[qidx + 1].desc,
296 &adap->sge.qs[qidx]);
297 if (err) {
298 while (--qidx >= 0)
299 free_irq(adap->msix_info[qidx + 1].vec,
300 &adap->sge.qs[qidx]);
301 return err;
302 }
303 qidx++;
304 }
305 }
306 return 0;
307 }
308
309 static int await_mgmt_replies(struct adapter *adap, unsigned long init_cnt,
310 unsigned long n)
311 {
312 int attempts = 5;
313
314 while (adap->sge.qs[0].rspq.offload_pkts < init_cnt + n) {
315 if (!--attempts)
316 return -ETIMEDOUT;
317 msleep(10);
318 }
319 return 0;
320 }
321
322 static int init_tp_parity(struct adapter *adap)
323 {
324 int i;
325 struct sk_buff *skb;
326 struct cpl_set_tcb_field *greq;
327 unsigned long cnt = adap->sge.qs[0].rspq.offload_pkts;
328
329 t3_tp_set_offload_mode(adap, 1);
330
331 for (i = 0; i < 16; i++) {
332 struct cpl_smt_write_req *req;
333
334 skb = alloc_skb(sizeof(*req), GFP_KERNEL | __GFP_NOFAIL);
335 req = (struct cpl_smt_write_req *)__skb_put(skb, sizeof(*req));
336 memset(req, 0, sizeof(*req));
337 req->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_FORWARD));
338 OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_SMT_WRITE_REQ, i));
339 req->iff = i;
340 t3_mgmt_tx(adap, skb);
341 }
342
343 for (i = 0; i < 2048; i++) {
344 struct cpl_l2t_write_req *req;
345
346 skb = alloc_skb(sizeof(*req), GFP_KERNEL | __GFP_NOFAIL);
347 req = (struct cpl_l2t_write_req *)__skb_put(skb, sizeof(*req));
348 memset(req, 0, sizeof(*req));
349 req->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_FORWARD));
350 OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_L2T_WRITE_REQ, i));
351 req->params = htonl(V_L2T_W_IDX(i));
352 t3_mgmt_tx(adap, skb);
353 }
354
355 for (i = 0; i < 2048; i++) {
356 struct cpl_rte_write_req *req;
357
358 skb = alloc_skb(sizeof(*req), GFP_KERNEL | __GFP_NOFAIL);
359 req = (struct cpl_rte_write_req *)__skb_put(skb, sizeof(*req));
360 memset(req, 0, sizeof(*req));
361 req->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_FORWARD));
362 OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_RTE_WRITE_REQ, i));
363 req->l2t_idx = htonl(V_L2T_W_IDX(i));
364 t3_mgmt_tx(adap, skb);
365 }
366
367 skb = alloc_skb(sizeof(*greq), GFP_KERNEL | __GFP_NOFAIL);
368 greq = (struct cpl_set_tcb_field *)__skb_put(skb, sizeof(*greq));
369 memset(greq, 0, sizeof(*greq));
370 greq->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_FORWARD));
371 OPCODE_TID(greq) = htonl(MK_OPCODE_TID(CPL_SET_TCB_FIELD, 0));
372 greq->mask = cpu_to_be64(1);
373 t3_mgmt_tx(adap, skb);
374
375 i = await_mgmt_replies(adap, cnt, 16 + 2048 + 2048 + 1);
376 t3_tp_set_offload_mode(adap, 0);
377 return i;
378 }
379
380 /**
381 * setup_rss - configure RSS
382 * @adap: the adapter
383 *
384 * Sets up RSS to distribute packets to multiple receive queues. We
385 * configure the RSS CPU lookup table to distribute to the number of HW
386 * receive queues, and the response queue lookup table to narrow that
387 * down to the response queues actually configured for each port.
388 * We always configure the RSS mapping for two ports since the mapping
389 * table has plenty of entries.
390 */
391 static void setup_rss(struct adapter *adap)
392 {
393 int i;
394 unsigned int nq0 = adap2pinfo(adap, 0)->nqsets;
395 unsigned int nq1 = adap->port[1] ? adap2pinfo(adap, 1)->nqsets : 1;
396 u8 cpus[SGE_QSETS + 1];
397 u16 rspq_map[RSS_TABLE_SIZE];
398
399 for (i = 0; i < SGE_QSETS; ++i)
400 cpus[i] = i;
401 cpus[SGE_QSETS] = 0xff; /* terminator */
402
403 for (i = 0; i < RSS_TABLE_SIZE / 2; ++i) {
404 rspq_map[i] = i % nq0;
405 rspq_map[i + RSS_TABLE_SIZE / 2] = (i % nq1) + nq0;
406 }
407
408 t3_config_rss(adap, F_RQFEEDBACKENABLE | F_TNLLKPEN | F_TNLMAPEN |
409 F_TNLPRTEN | F_TNL2TUPEN | F_TNL4TUPEN |
410 V_RRCPLCPUSIZE(6) | F_HASHTOEPLITZ, cpus, rspq_map);
411 }
412
413 static void init_napi(struct adapter *adap)
414 {
415 int i;
416
417 for (i = 0; i < SGE_QSETS; i++) {
418 struct sge_qset *qs = &adap->sge.qs[i];
419
420 if (qs->adap)
421 netif_napi_add(qs->netdev, &qs->napi, qs->napi.poll,
422 64);
423 }
424 }
425
426 /*
427 * Wait until all NAPI handlers are descheduled. This includes the handlers of
428 * both netdevices representing interfaces and the dummy ones for the extra
429 * queues.
430 */
431 static void quiesce_rx(struct adapter *adap)
432 {
433 int i;
434
435 for (i = 0; i < SGE_QSETS; i++)
436 if (adap->sge.qs[i].adap)
437 napi_disable(&adap->sge.qs[i].napi);
438 }
439
440 static void enable_all_napi(struct adapter *adap)
441 {
442 int i;
443 for (i = 0; i < SGE_QSETS; i++)
444 if (adap->sge.qs[i].adap)
445 napi_enable(&adap->sge.qs[i].napi);
446 }
447
448 /**
449 * setup_sge_qsets - configure SGE Tx/Rx/response queues
450 * @adap: the adapter
451 *
452 * Determines how many sets of SGE queues to use and initializes them.
453 * We support multiple queue sets per port if we have MSI-X, otherwise
454 * just one queue set per port.
455 */
456 static int setup_sge_qsets(struct adapter *adap)
457 {
458 int i, j, err, irq_idx = 0, qset_idx = 0;
459 unsigned int ntxq = SGE_TXQ_PER_SET;
460
461 if (adap->params.rev > 0 && !(adap->flags & USING_MSI))
462 irq_idx = -1;
463
464 for_each_port(adap, i) {
465 struct net_device *dev = adap->port[i];
466 struct port_info *pi = netdev_priv(dev);
467
468 pi->qs = &adap->sge.qs[pi->first_qset];
469 for (j = 0; j < pi->nqsets; ++j, ++qset_idx) {
470 err = t3_sge_alloc_qset(adap, qset_idx, 1,
471 (adap->flags & USING_MSIX) ? qset_idx + 1 :
472 irq_idx,
473 &adap->params.sge.qset[qset_idx], ntxq, dev);
474 if (err) {
475 t3_free_sge_resources(adap);
476 return err;
477 }
478 }
479 }
480
481 return 0;
482 }
483
484 static ssize_t attr_show(struct device *d, char *buf,
485 ssize_t(*format) (struct net_device *, char *))
486 {
487 ssize_t len;
488
489 /* Synchronize with ioctls that may shut down the device */
490 rtnl_lock();
491 len = (*format) (to_net_dev(d), buf);
492 rtnl_unlock();
493 return len;
494 }
495
496 static ssize_t attr_store(struct device *d,
497 const char *buf, size_t len,
498 ssize_t(*set) (struct net_device *, unsigned int),
499 unsigned int min_val, unsigned int max_val)
500 {
501 char *endp;
502 ssize_t ret;
503 unsigned int val;
504
505 if (!capable(CAP_NET_ADMIN))
506 return -EPERM;
507
508 val = simple_strtoul(buf, &endp, 0);
509 if (endp == buf || val < min_val || val > max_val)
510 return -EINVAL;
511
512 rtnl_lock();
513 ret = (*set) (to_net_dev(d), val);
514 if (!ret)
515 ret = len;
516 rtnl_unlock();
517 return ret;
518 }
519
520 #define CXGB3_SHOW(name, val_expr) \
521 static ssize_t format_##name(struct net_device *dev, char *buf) \
522 { \
523 struct port_info *pi = netdev_priv(dev); \
524 struct adapter *adap = pi->adapter; \
525 return sprintf(buf, "%u\n", val_expr); \
526 } \
527 static ssize_t show_##name(struct device *d, struct device_attribute *attr, \
528 char *buf) \
529 { \
530 return attr_show(d, buf, format_##name); \
531 }
532
533 static ssize_t set_nfilters(struct net_device *dev, unsigned int val)
534 {
535 struct port_info *pi = netdev_priv(dev);
536 struct adapter *adap = pi->adapter;
537 int min_tids = is_offload(adap) ? MC5_MIN_TIDS : 0;
538
539 if (adap->flags & FULL_INIT_DONE)
540 return -EBUSY;
541 if (val && adap->params.rev == 0)
542 return -EINVAL;
543 if (val > t3_mc5_size(&adap->mc5) - adap->params.mc5.nservers -
544 min_tids)
545 return -EINVAL;
546 adap->params.mc5.nfilters = val;
547 return 0;
548 }
549
550 static ssize_t store_nfilters(struct device *d, struct device_attribute *attr,
551 const char *buf, size_t len)
552 {
553 return attr_store(d, buf, len, set_nfilters, 0, ~0);
554 }
555
556 static ssize_t set_nservers(struct net_device *dev, unsigned int val)
557 {
558 struct port_info *pi = netdev_priv(dev);
559 struct adapter *adap = pi->adapter;
560
561 if (adap->flags & FULL_INIT_DONE)
562 return -EBUSY;
563 if (val > t3_mc5_size(&adap->mc5) - adap->params.mc5.nfilters -
564 MC5_MIN_TIDS)
565 return -EINVAL;
566 adap->params.mc5.nservers = val;
567 return 0;
568 }
569
570 static ssize_t store_nservers(struct device *d, struct device_attribute *attr,
571 const char *buf, size_t len)
572 {
573 return attr_store(d, buf, len, set_nservers, 0, ~0);
574 }
575
576 #define CXGB3_ATTR_R(name, val_expr) \
577 CXGB3_SHOW(name, val_expr) \
578 static DEVICE_ATTR(name, S_IRUGO, show_##name, NULL)
579
580 #define CXGB3_ATTR_RW(name, val_expr, store_method) \
581 CXGB3_SHOW(name, val_expr) \
582 static DEVICE_ATTR(name, S_IRUGO | S_IWUSR, show_##name, store_method)
583
584 CXGB3_ATTR_R(cam_size, t3_mc5_size(&adap->mc5));
585 CXGB3_ATTR_RW(nfilters, adap->params.mc5.nfilters, store_nfilters);
586 CXGB3_ATTR_RW(nservers, adap->params.mc5.nservers, store_nservers);
587
588 static struct attribute *cxgb3_attrs[] = {
589 &dev_attr_cam_size.attr,
590 &dev_attr_nfilters.attr,
591 &dev_attr_nservers.attr,
592 NULL
593 };
594
595 static struct attribute_group cxgb3_attr_group = {.attrs = cxgb3_attrs };
596
597 static ssize_t tm_attr_show(struct device *d,
598 char *buf, int sched)
599 {
600 struct port_info *pi = netdev_priv(to_net_dev(d));
601 struct adapter *adap = pi->adapter;
602 unsigned int v, addr, bpt, cpt;
603 ssize_t len;
604
605 addr = A_TP_TX_MOD_Q1_Q0_RATE_LIMIT - sched / 2;
606 rtnl_lock();
607 t3_write_reg(adap, A_TP_TM_PIO_ADDR, addr);
608 v = t3_read_reg(adap, A_TP_TM_PIO_DATA);
609 if (sched & 1)
610 v >>= 16;
611 bpt = (v >> 8) & 0xff;
612 cpt = v & 0xff;
613 if (!cpt)
614 len = sprintf(buf, "disabled\n");
615 else {
616 v = (adap->params.vpd.cclk * 1000) / cpt;
617 len = sprintf(buf, "%u Kbps\n", (v * bpt) / 125);
618 }
619 rtnl_unlock();
620 return len;
621 }
622
623 static ssize_t tm_attr_store(struct device *d,
624 const char *buf, size_t len, int sched)
625 {
626 struct port_info *pi = netdev_priv(to_net_dev(d));
627 struct adapter *adap = pi->adapter;
628 unsigned int val;
629 char *endp;
630 ssize_t ret;
631
632 if (!capable(CAP_NET_ADMIN))
633 return -EPERM;
634
635 val = simple_strtoul(buf, &endp, 0);
636 if (endp == buf || val > 10000000)
637 return -EINVAL;
638
639 rtnl_lock();
640 ret = t3_config_sched(adap, val, sched);
641 if (!ret)
642 ret = len;
643 rtnl_unlock();
644 return ret;
645 }
646
647 #define TM_ATTR(name, sched) \
648 static ssize_t show_##name(struct device *d, struct device_attribute *attr, \
649 char *buf) \
650 { \
651 return tm_attr_show(d, buf, sched); \
652 } \
653 static ssize_t store_##name(struct device *d, struct device_attribute *attr, \
654 const char *buf, size_t len) \
655 { \
656 return tm_attr_store(d, buf, len, sched); \
657 } \
658 static DEVICE_ATTR(name, S_IRUGO | S_IWUSR, show_##name, store_##name)
659
660 TM_ATTR(sched0, 0);
661 TM_ATTR(sched1, 1);
662 TM_ATTR(sched2, 2);
663 TM_ATTR(sched3, 3);
664 TM_ATTR(sched4, 4);
665 TM_ATTR(sched5, 5);
666 TM_ATTR(sched6, 6);
667 TM_ATTR(sched7, 7);
668
669 static struct attribute *offload_attrs[] = {
670 &dev_attr_sched0.attr,
671 &dev_attr_sched1.attr,
672 &dev_attr_sched2.attr,
673 &dev_attr_sched3.attr,
674 &dev_attr_sched4.attr,
675 &dev_attr_sched5.attr,
676 &dev_attr_sched6.attr,
677 &dev_attr_sched7.attr,
678 NULL
679 };
680
681 static struct attribute_group offload_attr_group = {.attrs = offload_attrs };
682
683 /*
684 * Sends an sk_buff to an offload queue driver
685 * after dealing with any active network taps.
686 */
687 static inline int offload_tx(struct t3cdev *tdev, struct sk_buff *skb)
688 {
689 int ret;
690
691 local_bh_disable();
692 ret = t3_offload_tx(tdev, skb);
693 local_bh_enable();
694 return ret;
695 }
696
697 static int write_smt_entry(struct adapter *adapter, int idx)
698 {
699 struct cpl_smt_write_req *req;
700 struct sk_buff *skb = alloc_skb(sizeof(*req), GFP_KERNEL);
701
702 if (!skb)
703 return -ENOMEM;
704
705 req = (struct cpl_smt_write_req *)__skb_put(skb, sizeof(*req));
706 req->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_FORWARD));
707 OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_SMT_WRITE_REQ, idx));
708 req->mtu_idx = NMTUS - 1; /* should be 0 but there's a T3 bug */
709 req->iff = idx;
710 memset(req->src_mac1, 0, sizeof(req->src_mac1));
711 memcpy(req->src_mac0, adapter->port[idx]->dev_addr, ETH_ALEN);
712 skb->priority = 1;
713 offload_tx(&adapter->tdev, skb);
714 return 0;
715 }
716
717 static int init_smt(struct adapter *adapter)
718 {
719 int i;
720
721 for_each_port(adapter, i)
722 write_smt_entry(adapter, i);
723 return 0;
724 }
725
726 static void init_port_mtus(struct adapter *adapter)
727 {
728 unsigned int mtus = adapter->port[0]->mtu;
729
730 if (adapter->port[1])
731 mtus |= adapter->port[1]->mtu << 16;
732 t3_write_reg(adapter, A_TP_MTU_PORT_TABLE, mtus);
733 }
734
735 static void send_pktsched_cmd(struct adapter *adap, int sched, int qidx, int lo,
736 int hi, int port)
737 {
738 struct sk_buff *skb;
739 struct mngt_pktsched_wr *req;
740
741 skb = alloc_skb(sizeof(*req), GFP_KERNEL | __GFP_NOFAIL);
742 req = (struct mngt_pktsched_wr *)skb_put(skb, sizeof(*req));
743 req->wr_hi = htonl(V_WR_OP(FW_WROPCODE_MNGT));
744 req->mngt_opcode = FW_MNGTOPCODE_PKTSCHED_SET;
745 req->sched = sched;
746 req->idx = qidx;
747 req->min = lo;
748 req->max = hi;
749 req->binding = port;
750 t3_mgmt_tx(adap, skb);
751 }
752
753 static void bind_qsets(struct adapter *adap)
754 {
755 int i, j;
756
757 for_each_port(adap, i) {
758 const struct port_info *pi = adap2pinfo(adap, i);
759
760 for (j = 0; j < pi->nqsets; ++j)
761 send_pktsched_cmd(adap, 1, pi->first_qset + j, -1,
762 -1, i);
763 }
764 }
765
766 #define FW_FNAME "t3fw-%d.%d.%d.bin"
767 #define TPSRAM_NAME "t3%c_protocol_sram-%d.%d.%d.bin"
768
769 static int upgrade_fw(struct adapter *adap)
770 {
771 int ret;
772 char buf[64];
773 const struct firmware *fw;
774 struct device *dev = &adap->pdev->dev;
775
776 snprintf(buf, sizeof(buf), FW_FNAME, FW_VERSION_MAJOR,
777 FW_VERSION_MINOR, FW_VERSION_MICRO);
778 ret = request_firmware(&fw, buf, dev);
779 if (ret < 0) {
780 dev_err(dev, "could not upgrade firmware: unable to load %s\n",
781 buf);
782 return ret;
783 }
784 ret = t3_load_fw(adap, fw->data, fw->size);
785 release_firmware(fw);
786
787 if (ret == 0)
788 dev_info(dev, "successful upgrade to firmware %d.%d.%d\n",
789 FW_VERSION_MAJOR, FW_VERSION_MINOR, FW_VERSION_MICRO);
790 else
791 dev_err(dev, "failed to upgrade to firmware %d.%d.%d\n",
792 FW_VERSION_MAJOR, FW_VERSION_MINOR, FW_VERSION_MICRO);
793
794 return ret;
795 }
796
797 static inline char t3rev2char(struct adapter *adapter)
798 {
799 char rev = 0;
800
801 switch(adapter->params.rev) {
802 case T3_REV_B:
803 case T3_REV_B2:
804 rev = 'b';
805 break;
806 case T3_REV_C:
807 rev = 'c';
808 break;
809 }
810 return rev;
811 }
812
813 static int update_tpsram(struct adapter *adap)
814 {
815 const struct firmware *tpsram;
816 char buf[64];
817 struct device *dev = &adap->pdev->dev;
818 int ret;
819 char rev;
820
821 rev = t3rev2char(adap);
822 if (!rev)
823 return 0;
824
825 snprintf(buf, sizeof(buf), TPSRAM_NAME, rev,
826 TP_VERSION_MAJOR, TP_VERSION_MINOR, TP_VERSION_MICRO);
827
828 ret = request_firmware(&tpsram, buf, dev);
829 if (ret < 0) {
830 dev_err(dev, "could not load TP SRAM: unable to load %s\n",
831 buf);
832 return ret;
833 }
834
835 ret = t3_check_tpsram(adap, tpsram->data, tpsram->size);
836 if (ret)
837 goto release_tpsram;
838
839 ret = t3_set_proto_sram(adap, tpsram->data);
840 if (ret == 0)
841 dev_info(dev,
842 "successful update of protocol engine "
843 "to %d.%d.%d\n",
844 TP_VERSION_MAJOR, TP_VERSION_MINOR, TP_VERSION_MICRO);
845 else
846 dev_err(dev, "failed to update of protocol engine %d.%d.%d\n",
847 TP_VERSION_MAJOR, TP_VERSION_MINOR, TP_VERSION_MICRO);
848 if (ret)
849 dev_err(dev, "loading protocol SRAM failed\n");
850
851 release_tpsram:
852 release_firmware(tpsram);
853
854 return ret;
855 }
856
857 /**
858 * cxgb_up - enable the adapter
859 * @adapter: adapter being enabled
860 *
861 * Called when the first port is enabled, this function performs the
862 * actions necessary to make an adapter operational, such as completing
863 * the initialization of HW modules, and enabling interrupts.
864 *
865 * Must be called with the rtnl lock held.
866 */
867 static int cxgb_up(struct adapter *adap)
868 {
869 int err;
870 int must_load;
871
872 if (!(adap->flags & FULL_INIT_DONE)) {
873 err = t3_check_fw_version(adap, &must_load);
874 if (err == -EINVAL) {
875 err = upgrade_fw(adap);
876 if (err && must_load)
877 goto out;
878 }
879
880 err = t3_check_tpsram_version(adap, &must_load);
881 if (err == -EINVAL) {
882 err = update_tpsram(adap);
883 if (err && must_load)
884 goto out;
885 }
886
887 err = t3_init_hw(adap, 0);
888 if (err)
889 goto out;
890
891 t3_set_reg_field(adap, A_TP_PARA_REG5, 0, F_RXDDPOFFINIT);
892 t3_write_reg(adap, A_ULPRX_TDDP_PSZ, V_HPZ0(PAGE_SHIFT - 12));
893
894 err = setup_sge_qsets(adap);
895 if (err)
896 goto out;
897
898 setup_rss(adap);
899 init_napi(adap);
900 adap->flags |= FULL_INIT_DONE;
901 }
902
903 t3_intr_clear(adap);
904
905 if (adap->flags & USING_MSIX) {
906 name_msix_vecs(adap);
907 err = request_irq(adap->msix_info[0].vec,
908 t3_async_intr_handler, 0,
909 adap->msix_info[0].desc, adap);
910 if (err)
911 goto irq_err;
912
913 err = request_msix_data_irqs(adap);
914 if (err) {
915 free_irq(adap->msix_info[0].vec, adap);
916 goto irq_err;
917 }
918 } else if ((err = request_irq(adap->pdev->irq,
919 t3_intr_handler(adap,
920 adap->sge.qs[0].rspq.
921 polling),
922 (adap->flags & USING_MSI) ?
923 0 : IRQF_SHARED,
924 adap->name, adap)))
925 goto irq_err;
926
927 enable_all_napi(adap);
928 t3_sge_start(adap);
929 t3_intr_enable(adap);
930
931 if (adap->params.rev >= T3_REV_C && !(adap->flags & TP_PARITY_INIT) &&
932 is_offload(adap) && init_tp_parity(adap) == 0)
933 adap->flags |= TP_PARITY_INIT;
934
935 if (adap->flags & TP_PARITY_INIT) {
936 t3_write_reg(adap, A_TP_INT_CAUSE,
937 F_CMCACHEPERR | F_ARPLUTPERR);
938 t3_write_reg(adap, A_TP_INT_ENABLE, 0x7fbfffff);
939 }
940
941 if ((adap->flags & (USING_MSIX | QUEUES_BOUND)) == USING_MSIX)
942 bind_qsets(adap);
943 adap->flags |= QUEUES_BOUND;
944
945 out:
946 return err;
947 irq_err:
948 CH_ERR(adap, "request_irq failed, err %d\n", err);
949 goto out;
950 }
951
952 /*
953 * Release resources when all the ports and offloading have been stopped.
954 */
955 static void cxgb_down(struct adapter *adapter)
956 {
957 t3_sge_stop(adapter);
958 spin_lock_irq(&adapter->work_lock); /* sync with PHY intr task */
959 t3_intr_disable(adapter);
960 spin_unlock_irq(&adapter->work_lock);
961
962 if (adapter->flags & USING_MSIX) {
963 int i, n = 0;
964
965 free_irq(adapter->msix_info[0].vec, adapter);
966 for_each_port(adapter, i)
967 n += adap2pinfo(adapter, i)->nqsets;
968
969 for (i = 0; i < n; ++i)
970 free_irq(adapter->msix_info[i + 1].vec,
971 &adapter->sge.qs[i]);
972 } else
973 free_irq(adapter->pdev->irq, adapter);
974
975 flush_workqueue(cxgb3_wq); /* wait for external IRQ handler */
976 quiesce_rx(adapter);
977 }
978
979 static void schedule_chk_task(struct adapter *adap)
980 {
981 unsigned int timeo;
982
983 timeo = adap->params.linkpoll_period ?
984 (HZ * adap->params.linkpoll_period) / 10 :
985 adap->params.stats_update_period * HZ;
986 if (timeo)
987 queue_delayed_work(cxgb3_wq, &adap->adap_check_task, timeo);
988 }
989
990 static int offload_open(struct net_device *dev)
991 {
992 struct port_info *pi = netdev_priv(dev);
993 struct adapter *adapter = pi->adapter;
994 struct t3cdev *tdev = dev2t3cdev(dev);
995 int adap_up = adapter->open_device_map & PORT_MASK;
996 int err;
997
998 if (test_and_set_bit(OFFLOAD_DEVMAP_BIT, &adapter->open_device_map))
999 return 0;
1000
1001 if (!adap_up && (err = cxgb_up(adapter)) < 0)
1002 return err;
1003
1004 t3_tp_set_offload_mode(adapter, 1);
1005 tdev->lldev = adapter->port[0];
1006 err = cxgb3_offload_activate(adapter);
1007 if (err)
1008 goto out;
1009
1010 init_port_mtus(adapter);
1011 t3_load_mtus(adapter, adapter->params.mtus, adapter->params.a_wnd,
1012 adapter->params.b_wnd,
1013 adapter->params.rev == 0 ?
1014 adapter->port[0]->mtu : 0xffff);
1015 init_smt(adapter);
1016
1017 /* Never mind if the next step fails */
1018 sysfs_create_group(&tdev->lldev->dev.kobj, &offload_attr_group);
1019
1020 /* Call back all registered clients */
1021 cxgb3_add_clients(tdev);
1022
1023 out:
1024 /* restore them in case the offload module has changed them */
1025 if (err) {
1026 t3_tp_set_offload_mode(adapter, 0);
1027 clear_bit(OFFLOAD_DEVMAP_BIT, &adapter->open_device_map);
1028 cxgb3_set_dummy_ops(tdev);
1029 }
1030 return err;
1031 }
1032
1033 static int offload_close(struct t3cdev *tdev)
1034 {
1035 struct adapter *adapter = tdev2adap(tdev);
1036
1037 if (!test_bit(OFFLOAD_DEVMAP_BIT, &adapter->open_device_map))
1038 return 0;
1039
1040 /* Call back all registered clients */
1041 cxgb3_remove_clients(tdev);
1042
1043 sysfs_remove_group(&tdev->lldev->dev.kobj, &offload_attr_group);
1044
1045 tdev->lldev = NULL;
1046 cxgb3_set_dummy_ops(tdev);
1047 t3_tp_set_offload_mode(adapter, 0);
1048 clear_bit(OFFLOAD_DEVMAP_BIT, &adapter->open_device_map);
1049
1050 if (!adapter->open_device_map)
1051 cxgb_down(adapter);
1052
1053 cxgb3_offload_deactivate(adapter);
1054 return 0;
1055 }
1056
1057 static int cxgb_open(struct net_device *dev)
1058 {
1059 struct port_info *pi = netdev_priv(dev);
1060 struct adapter *adapter = pi->adapter;
1061 int other_ports = adapter->open_device_map & PORT_MASK;
1062 int err;
1063
1064 if (!adapter->open_device_map && (err = cxgb_up(adapter)) < 0) {
1065 quiesce_rx(adapter);
1066 return err;
1067 }
1068
1069 set_bit(pi->port_id, &adapter->open_device_map);
1070 if (is_offload(adapter) && !ofld_disable) {
1071 err = offload_open(dev);
1072 if (err)
1073 printk(KERN_WARNING
1074 "Could not initialize offload capabilities\n");
1075 }
1076
1077 link_start(dev);
1078 t3_port_intr_enable(adapter, pi->port_id);
1079 netif_start_queue(dev);
1080 if (!other_ports)
1081 schedule_chk_task(adapter);
1082
1083 return 0;
1084 }
1085
1086 static int cxgb_close(struct net_device *dev)
1087 {
1088 struct port_info *pi = netdev_priv(dev);
1089 struct adapter *adapter = pi->adapter;
1090
1091 t3_port_intr_disable(adapter, pi->port_id);
1092 netif_stop_queue(dev);
1093 pi->phy.ops->power_down(&pi->phy, 1);
1094 netif_carrier_off(dev);
1095 t3_mac_disable(&pi->mac, MAC_DIRECTION_TX | MAC_DIRECTION_RX);
1096
1097 spin_lock(&adapter->work_lock); /* sync with update task */
1098 clear_bit(pi->port_id, &adapter->open_device_map);
1099 spin_unlock(&adapter->work_lock);
1100
1101 if (!(adapter->open_device_map & PORT_MASK))
1102 cancel_rearming_delayed_workqueue(cxgb3_wq,
1103 &adapter->adap_check_task);
1104
1105 if (!adapter->open_device_map)
1106 cxgb_down(adapter);
1107
1108 return 0;
1109 }
1110
1111 static struct net_device_stats *cxgb_get_stats(struct net_device *dev)
1112 {
1113 struct port_info *pi = netdev_priv(dev);
1114 struct adapter *adapter = pi->adapter;
1115 struct net_device_stats *ns = &pi->netstats;
1116 const struct mac_stats *pstats;
1117
1118 spin_lock(&adapter->stats_lock);
1119 pstats = t3_mac_update_stats(&pi->mac);
1120 spin_unlock(&adapter->stats_lock);
1121
1122 ns->tx_bytes = pstats->tx_octets;
1123 ns->tx_packets = pstats->tx_frames;
1124 ns->rx_bytes = pstats->rx_octets;
1125 ns->rx_packets = pstats->rx_frames;
1126 ns->multicast = pstats->rx_mcast_frames;
1127
1128 ns->tx_errors = pstats->tx_underrun;
1129 ns->rx_errors = pstats->rx_symbol_errs + pstats->rx_fcs_errs +
1130 pstats->rx_too_long + pstats->rx_jabber + pstats->rx_short +
1131 pstats->rx_fifo_ovfl;
1132
1133 /* detailed rx_errors */
1134 ns->rx_length_errors = pstats->rx_jabber + pstats->rx_too_long;
1135 ns->rx_over_errors = 0;
1136 ns->rx_crc_errors = pstats->rx_fcs_errs;
1137 ns->rx_frame_errors = pstats->rx_symbol_errs;
1138 ns->rx_fifo_errors = pstats->rx_fifo_ovfl;
1139 ns->rx_missed_errors = pstats->rx_cong_drops;
1140
1141 /* detailed tx_errors */
1142 ns->tx_aborted_errors = 0;
1143 ns->tx_carrier_errors = 0;
1144 ns->tx_fifo_errors = pstats->tx_underrun;
1145 ns->tx_heartbeat_errors = 0;
1146 ns->tx_window_errors = 0;
1147 return ns;
1148 }
1149
1150 static u32 get_msglevel(struct net_device *dev)
1151 {
1152 struct port_info *pi = netdev_priv(dev);
1153 struct adapter *adapter = pi->adapter;
1154
1155 return adapter->msg_enable;
1156 }
1157
1158 static void set_msglevel(struct net_device *dev, u32 val)
1159 {
1160 struct port_info *pi = netdev_priv(dev);
1161 struct adapter *adapter = pi->adapter;
1162
1163 adapter->msg_enable = val;
1164 }
1165
1166 static char stats_strings[][ETH_GSTRING_LEN] = {
1167 "TxOctetsOK ",
1168 "TxFramesOK ",
1169 "TxMulticastFramesOK",
1170 "TxBroadcastFramesOK",
1171 "TxPauseFrames ",
1172 "TxUnderrun ",
1173 "TxExtUnderrun ",
1174
1175 "TxFrames64 ",
1176 "TxFrames65To127 ",
1177 "TxFrames128To255 ",
1178 "TxFrames256To511 ",
1179 "TxFrames512To1023 ",
1180 "TxFrames1024To1518 ",
1181 "TxFrames1519ToMax ",
1182
1183 "RxOctetsOK ",
1184 "RxFramesOK ",
1185 "RxMulticastFramesOK",
1186 "RxBroadcastFramesOK",
1187 "RxPauseFrames ",
1188 "RxFCSErrors ",
1189 "RxSymbolErrors ",
1190 "RxShortErrors ",
1191 "RxJabberErrors ",
1192 "RxLengthErrors ",
1193 "RxFIFOoverflow ",
1194
1195 "RxFrames64 ",
1196 "RxFrames65To127 ",
1197 "RxFrames128To255 ",
1198 "RxFrames256To511 ",
1199 "RxFrames512To1023 ",
1200 "RxFrames1024To1518 ",
1201 "RxFrames1519ToMax ",
1202
1203 "PhyFIFOErrors ",
1204 "TSO ",
1205 "VLANextractions ",
1206 "VLANinsertions ",
1207 "TxCsumOffload ",
1208 "RxCsumGood ",
1209 "RxDrops ",
1210
1211 "CheckTXEnToggled ",
1212 "CheckResets ",
1213
1214 };
1215
1216 static int get_sset_count(struct net_device *dev, int sset)
1217 {
1218 switch (sset) {
1219 case ETH_SS_STATS:
1220 return ARRAY_SIZE(stats_strings);
1221 default:
1222 return -EOPNOTSUPP;
1223 }
1224 }
1225
1226 #define T3_REGMAP_SIZE (3 * 1024)
1227
1228 static int get_regs_len(struct net_device *dev)
1229 {
1230 return T3_REGMAP_SIZE;
1231 }
1232
1233 static int get_eeprom_len(struct net_device *dev)
1234 {
1235 return EEPROMSIZE;
1236 }
1237
1238 static void get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
1239 {
1240 struct port_info *pi = netdev_priv(dev);
1241 struct adapter *adapter = pi->adapter;
1242 u32 fw_vers = 0;
1243 u32 tp_vers = 0;
1244
1245 t3_get_fw_version(adapter, &fw_vers);
1246 t3_get_tp_version(adapter, &tp_vers);
1247
1248 strcpy(info->driver, DRV_NAME);
1249 strcpy(info->version, DRV_VERSION);
1250 strcpy(info->bus_info, pci_name(adapter->pdev));
1251 if (!fw_vers)
1252 strcpy(info->fw_version, "N/A");
1253 else {
1254 snprintf(info->fw_version, sizeof(info->fw_version),
1255 "%s %u.%u.%u TP %u.%u.%u",
1256 G_FW_VERSION_TYPE(fw_vers) ? "T" : "N",
1257 G_FW_VERSION_MAJOR(fw_vers),
1258 G_FW_VERSION_MINOR(fw_vers),
1259 G_FW_VERSION_MICRO(fw_vers),
1260 G_TP_VERSION_MAJOR(tp_vers),
1261 G_TP_VERSION_MINOR(tp_vers),
1262 G_TP_VERSION_MICRO(tp_vers));
1263 }
1264 }
1265
1266 static void get_strings(struct net_device *dev, u32 stringset, u8 * data)
1267 {
1268 if (stringset == ETH_SS_STATS)
1269 memcpy(data, stats_strings, sizeof(stats_strings));
1270 }
1271
1272 static unsigned long collect_sge_port_stats(struct adapter *adapter,
1273 struct port_info *p, int idx)
1274 {
1275 int i;
1276 unsigned long tot = 0;
1277
1278 for (i = 0; i < p->nqsets; ++i)
1279 tot += adapter->sge.qs[i + p->first_qset].port_stats[idx];
1280 return tot;
1281 }
1282
1283 static void get_stats(struct net_device *dev, struct ethtool_stats *stats,
1284 u64 *data)
1285 {
1286 struct port_info *pi = netdev_priv(dev);
1287 struct adapter *adapter = pi->adapter;
1288 const struct mac_stats *s;
1289
1290 spin_lock(&adapter->stats_lock);
1291 s = t3_mac_update_stats(&pi->mac);
1292 spin_unlock(&adapter->stats_lock);
1293
1294 *data++ = s->tx_octets;
1295 *data++ = s->tx_frames;
1296 *data++ = s->tx_mcast_frames;
1297 *data++ = s->tx_bcast_frames;
1298 *data++ = s->tx_pause;
1299 *data++ = s->tx_underrun;
1300 *data++ = s->tx_fifo_urun;
1301
1302 *data++ = s->tx_frames_64;
1303 *data++ = s->tx_frames_65_127;
1304 *data++ = s->tx_frames_128_255;
1305 *data++ = s->tx_frames_256_511;
1306 *data++ = s->tx_frames_512_1023;
1307 *data++ = s->tx_frames_1024_1518;
1308 *data++ = s->tx_frames_1519_max;
1309
1310 *data++ = s->rx_octets;
1311 *data++ = s->rx_frames;
1312 *data++ = s->rx_mcast_frames;
1313 *data++ = s->rx_bcast_frames;
1314 *data++ = s->rx_pause;
1315 *data++ = s->rx_fcs_errs;
1316 *data++ = s->rx_symbol_errs;
1317 *data++ = s->rx_short;
1318 *data++ = s->rx_jabber;
1319 *data++ = s->rx_too_long;
1320 *data++ = s->rx_fifo_ovfl;
1321
1322 *data++ = s->rx_frames_64;
1323 *data++ = s->rx_frames_65_127;
1324 *data++ = s->rx_frames_128_255;
1325 *data++ = s->rx_frames_256_511;
1326 *data++ = s->rx_frames_512_1023;
1327 *data++ = s->rx_frames_1024_1518;
1328 *data++ = s->rx_frames_1519_max;
1329
1330 *data++ = pi->phy.fifo_errors;
1331
1332 *data++ = collect_sge_port_stats(adapter, pi, SGE_PSTAT_TSO);
1333 *data++ = collect_sge_port_stats(adapter, pi, SGE_PSTAT_VLANEX);
1334 *data++ = collect_sge_port_stats(adapter, pi, SGE_PSTAT_VLANINS);
1335 *data++ = collect_sge_port_stats(adapter, pi, SGE_PSTAT_TX_CSUM);
1336 *data++ = collect_sge_port_stats(adapter, pi, SGE_PSTAT_RX_CSUM_GOOD);
1337 *data++ = s->rx_cong_drops;
1338
1339 *data++ = s->num_toggled;
1340 *data++ = s->num_resets;
1341 }
1342
1343 static inline void reg_block_dump(struct adapter *ap, void *buf,
1344 unsigned int start, unsigned int end)
1345 {
1346 u32 *p = buf + start;
1347
1348 for (; start <= end; start += sizeof(u32))
1349 *p++ = t3_read_reg(ap, start);
1350 }
1351
1352 static void get_regs(struct net_device *dev, struct ethtool_regs *regs,
1353 void *buf)
1354 {
1355 struct port_info *pi = netdev_priv(dev);
1356 struct adapter *ap = pi->adapter;
1357
1358 /*
1359 * Version scheme:
1360 * bits 0..9: chip version
1361 * bits 10..15: chip revision
1362 * bit 31: set for PCIe cards
1363 */
1364 regs->version = 3 | (ap->params.rev << 10) | (is_pcie(ap) << 31);
1365
1366 /*
1367 * We skip the MAC statistics registers because they are clear-on-read.
1368 * Also reading multi-register stats would need to synchronize with the
1369 * periodic mac stats accumulation. Hard to justify the complexity.
1370 */
1371 memset(buf, 0, T3_REGMAP_SIZE);
1372 reg_block_dump(ap, buf, 0, A_SG_RSPQ_CREDIT_RETURN);
1373 reg_block_dump(ap, buf, A_SG_HI_DRB_HI_THRSH, A_ULPRX_PBL_ULIMIT);
1374 reg_block_dump(ap, buf, A_ULPTX_CONFIG, A_MPS_INT_CAUSE);
1375 reg_block_dump(ap, buf, A_CPL_SWITCH_CNTRL, A_CPL_MAP_TBL_DATA);
1376 reg_block_dump(ap, buf, A_SMB_GLOBAL_TIME_CFG, A_XGM_SERDES_STAT3);
1377 reg_block_dump(ap, buf, A_XGM_SERDES_STATUS0,
1378 XGM_REG(A_XGM_SERDES_STAT3, 1));
1379 reg_block_dump(ap, buf, XGM_REG(A_XGM_SERDES_STATUS0, 1),
1380 XGM_REG(A_XGM_RX_SPI4_SOP_EOP_CNT, 1));
1381 }
1382
1383 static int restart_autoneg(struct net_device *dev)
1384 {
1385 struct port_info *p = netdev_priv(dev);
1386
1387 if (!netif_running(dev))
1388 return -EAGAIN;
1389 if (p->link_config.autoneg != AUTONEG_ENABLE)
1390 return -EINVAL;
1391 p->phy.ops->autoneg_restart(&p->phy);
1392 return 0;
1393 }
1394
1395 static int cxgb3_phys_id(struct net_device *dev, u32 data)
1396 {
1397 struct port_info *pi = netdev_priv(dev);
1398 struct adapter *adapter = pi->adapter;
1399 int i;
1400
1401 if (data == 0)
1402 data = 2;
1403
1404 for (i = 0; i < data * 2; i++) {
1405 t3_set_reg_field(adapter, A_T3DBG_GPIO_EN, F_GPIO0_OUT_VAL,
1406 (i & 1) ? F_GPIO0_OUT_VAL : 0);
1407 if (msleep_interruptible(500))
1408 break;
1409 }
1410 t3_set_reg_field(adapter, A_T3DBG_GPIO_EN, F_GPIO0_OUT_VAL,
1411 F_GPIO0_OUT_VAL);
1412 return 0;
1413 }
1414
1415 static int get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
1416 {
1417 struct port_info *p = netdev_priv(dev);
1418
1419 cmd->supported = p->link_config.supported;
1420 cmd->advertising = p->link_config.advertising;
1421
1422 if (netif_carrier_ok(dev)) {
1423 cmd->speed = p->link_config.speed;
1424 cmd->duplex = p->link_config.duplex;
1425 } else {
1426 cmd->speed = -1;
1427 cmd->duplex = -1;
1428 }
1429
1430 cmd->port = (cmd->supported & SUPPORTED_TP) ? PORT_TP : PORT_FIBRE;
1431 cmd->phy_address = p->phy.addr;
1432 cmd->transceiver = XCVR_EXTERNAL;
1433 cmd->autoneg = p->link_config.autoneg;
1434 cmd->maxtxpkt = 0;
1435 cmd->maxrxpkt = 0;
1436 return 0;
1437 }
1438
1439 static int speed_duplex_to_caps(int speed, int duplex)
1440 {
1441 int cap = 0;
1442
1443 switch (speed) {
1444 case SPEED_10:
1445 if (duplex == DUPLEX_FULL)
1446 cap = SUPPORTED_10baseT_Full;
1447 else
1448 cap = SUPPORTED_10baseT_Half;
1449 break;
1450 case SPEED_100:
1451 if (duplex == DUPLEX_FULL)
1452 cap = SUPPORTED_100baseT_Full;
1453 else
1454 cap = SUPPORTED_100baseT_Half;
1455 break;
1456 case SPEED_1000:
1457 if (duplex == DUPLEX_FULL)
1458 cap = SUPPORTED_1000baseT_Full;
1459 else
1460 cap = SUPPORTED_1000baseT_Half;
1461 break;
1462 case SPEED_10000:
1463 if (duplex == DUPLEX_FULL)
1464 cap = SUPPORTED_10000baseT_Full;
1465 }
1466 return cap;
1467 }
1468
1469 #define ADVERTISED_MASK (ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full | \
1470 ADVERTISED_100baseT_Half | ADVERTISED_100baseT_Full | \
1471 ADVERTISED_1000baseT_Half | ADVERTISED_1000baseT_Full | \
1472 ADVERTISED_10000baseT_Full)
1473
1474 static int set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
1475 {
1476 struct port_info *p = netdev_priv(dev);
1477 struct link_config *lc = &p->link_config;
1478
1479 if (!(lc->supported & SUPPORTED_Autoneg))
1480 return -EOPNOTSUPP; /* can't change speed/duplex */
1481
1482 if (cmd->autoneg == AUTONEG_DISABLE) {
1483 int cap = speed_duplex_to_caps(cmd->speed, cmd->duplex);
1484
1485 if (!(lc->supported & cap) || cmd->speed == SPEED_1000)
1486 return -EINVAL;
1487 lc->requested_speed = cmd->speed;
1488 lc->requested_duplex = cmd->duplex;
1489 lc->advertising = 0;
1490 } else {
1491 cmd->advertising &= ADVERTISED_MASK;
1492 cmd->advertising &= lc->supported;
1493 if (!cmd->advertising)
1494 return -EINVAL;
1495 lc->requested_speed = SPEED_INVALID;
1496 lc->requested_duplex = DUPLEX_INVALID;
1497 lc->advertising = cmd->advertising | ADVERTISED_Autoneg;
1498 }
1499 lc->autoneg = cmd->autoneg;
1500 if (netif_running(dev))
1501 t3_link_start(&p->phy, &p->mac, lc);
1502 return 0;
1503 }
1504
1505 static void get_pauseparam(struct net_device *dev,
1506 struct ethtool_pauseparam *epause)
1507 {
1508 struct port_info *p = netdev_priv(dev);
1509
1510 epause->autoneg = (p->link_config.requested_fc & PAUSE_AUTONEG) != 0;
1511 epause->rx_pause = (p->link_config.fc & PAUSE_RX) != 0;
1512 epause->tx_pause = (p->link_config.fc & PAUSE_TX) != 0;
1513 }
1514
1515 static int set_pauseparam(struct net_device *dev,
1516 struct ethtool_pauseparam *epause)
1517 {
1518 struct port_info *p = netdev_priv(dev);
1519 struct link_config *lc = &p->link_config;
1520
1521 if (epause->autoneg == AUTONEG_DISABLE)
1522 lc->requested_fc = 0;
1523 else if (lc->supported & SUPPORTED_Autoneg)
1524 lc->requested_fc = PAUSE_AUTONEG;
1525 else
1526 return -EINVAL;
1527
1528 if (epause->rx_pause)
1529 lc->requested_fc |= PAUSE_RX;
1530 if (epause->tx_pause)
1531 lc->requested_fc |= PAUSE_TX;
1532 if (lc->autoneg == AUTONEG_ENABLE) {
1533 if (netif_running(dev))
1534 t3_link_start(&p->phy, &p->mac, lc);
1535 } else {
1536 lc->fc = lc->requested_fc & (PAUSE_RX | PAUSE_TX);
1537 if (netif_running(dev))
1538 t3_mac_set_speed_duplex_fc(&p->mac, -1, -1, lc->fc);
1539 }
1540 return 0;
1541 }
1542
1543 static u32 get_rx_csum(struct net_device *dev)
1544 {
1545 struct port_info *p = netdev_priv(dev);
1546
1547 return p->rx_csum_offload;
1548 }
1549
1550 static int set_rx_csum(struct net_device *dev, u32 data)
1551 {
1552 struct port_info *p = netdev_priv(dev);
1553
1554 p->rx_csum_offload = data;
1555 return 0;
1556 }
1557
1558 static void get_sge_param(struct net_device *dev, struct ethtool_ringparam *e)
1559 {
1560 struct port_info *pi = netdev_priv(dev);
1561 struct adapter *adapter = pi->adapter;
1562 const struct qset_params *q = &adapter->params.sge.qset[pi->first_qset];
1563
1564 e->rx_max_pending = MAX_RX_BUFFERS;
1565 e->rx_mini_max_pending = 0;
1566 e->rx_jumbo_max_pending = MAX_RX_JUMBO_BUFFERS;
1567 e->tx_max_pending = MAX_TXQ_ENTRIES;
1568
1569 e->rx_pending = q->fl_size;
1570 e->rx_mini_pending = q->rspq_size;
1571 e->rx_jumbo_pending = q->jumbo_size;
1572 e->tx_pending = q->txq_size[0];
1573 }
1574
1575 static int set_sge_param(struct net_device *dev, struct ethtool_ringparam *e)
1576 {
1577 struct port_info *pi = netdev_priv(dev);
1578 struct adapter *adapter = pi->adapter;
1579 struct qset_params *q;
1580 int i;
1581
1582 if (e->rx_pending > MAX_RX_BUFFERS ||
1583 e->rx_jumbo_pending > MAX_RX_JUMBO_BUFFERS ||
1584 e->tx_pending > MAX_TXQ_ENTRIES ||
1585 e->rx_mini_pending > MAX_RSPQ_ENTRIES ||
1586 e->rx_mini_pending < MIN_RSPQ_ENTRIES ||
1587 e->rx_pending < MIN_FL_ENTRIES ||
1588 e->rx_jumbo_pending < MIN_FL_ENTRIES ||
1589 e->tx_pending < adapter->params.nports * MIN_TXQ_ENTRIES)
1590 return -EINVAL;
1591
1592 if (adapter->flags & FULL_INIT_DONE)
1593 return -EBUSY;
1594
1595 q = &adapter->params.sge.qset[pi->first_qset];
1596 for (i = 0; i < pi->nqsets; ++i, ++q) {
1597 q->rspq_size = e->rx_mini_pending;
1598 q->fl_size = e->rx_pending;
1599 q->jumbo_size = e->rx_jumbo_pending;
1600 q->txq_size[0] = e->tx_pending;
1601 q->txq_size[1] = e->tx_pending;
1602 q->txq_size[2] = e->tx_pending;
1603 }
1604 return 0;
1605 }
1606
1607 static int set_coalesce(struct net_device *dev, struct ethtool_coalesce *c)
1608 {
1609 struct port_info *pi = netdev_priv(dev);
1610 struct adapter *adapter = pi->adapter;
1611 struct qset_params *qsp = &adapter->params.sge.qset[0];
1612 struct sge_qset *qs = &adapter->sge.qs[0];
1613
1614 if (c->rx_coalesce_usecs * 10 > M_NEWTIMER)
1615 return -EINVAL;
1616
1617 qsp->coalesce_usecs = c->rx_coalesce_usecs;
1618 t3_update_qset_coalesce(qs, qsp);
1619 return 0;
1620 }
1621
1622 static int get_coalesce(struct net_device *dev, struct ethtool_coalesce *c)
1623 {
1624 struct port_info *pi = netdev_priv(dev);
1625 struct adapter *adapter = pi->adapter;
1626 struct qset_params *q = adapter->params.sge.qset;
1627
1628 c->rx_coalesce_usecs = q->coalesce_usecs;
1629 return 0;
1630 }
1631
1632 static int get_eeprom(struct net_device *dev, struct ethtool_eeprom *e,
1633 u8 * data)
1634 {
1635 struct port_info *pi = netdev_priv(dev);
1636 struct adapter *adapter = pi->adapter;
1637 int i, err = 0;
1638
1639 u8 *buf = kmalloc(EEPROMSIZE, GFP_KERNEL);
1640 if (!buf)
1641 return -ENOMEM;
1642
1643 e->magic = EEPROM_MAGIC;
1644 for (i = e->offset & ~3; !err && i < e->offset + e->len; i += 4)
1645 err = t3_seeprom_read(adapter, i, (__le32 *) & buf[i]);
1646
1647 if (!err)
1648 memcpy(data, buf + e->offset, e->len);
1649 kfree(buf);
1650 return err;
1651 }
1652
1653 static int set_eeprom(struct net_device *dev, struct ethtool_eeprom *eeprom,
1654 u8 * data)
1655 {
1656 struct port_info *pi = netdev_priv(dev);
1657 struct adapter *adapter = pi->adapter;
1658 u32 aligned_offset, aligned_len;
1659 __le32 *p;
1660 u8 *buf;
1661 int err;
1662
1663 if (eeprom->magic != EEPROM_MAGIC)
1664 return -EINVAL;
1665
1666 aligned_offset = eeprom->offset & ~3;
1667 aligned_len = (eeprom->len + (eeprom->offset & 3) + 3) & ~3;
1668
1669 if (aligned_offset != eeprom->offset || aligned_len != eeprom->len) {
1670 buf = kmalloc(aligned_len, GFP_KERNEL);
1671 if (!buf)
1672 return -ENOMEM;
1673 err = t3_seeprom_read(adapter, aligned_offset, (__le32 *) buf);
1674 if (!err && aligned_len > 4)
1675 err = t3_seeprom_read(adapter,
1676 aligned_offset + aligned_len - 4,
1677 (__le32 *) & buf[aligned_len - 4]);
1678 if (err)
1679 goto out;
1680 memcpy(buf + (eeprom->offset & 3), data, eeprom->len);
1681 } else
1682 buf = data;
1683
1684 err = t3_seeprom_wp(adapter, 0);
1685 if (err)
1686 goto out;
1687
1688 for (p = (__le32 *) buf; !err && aligned_len; aligned_len -= 4, p++) {
1689 err = t3_seeprom_write(adapter, aligned_offset, *p);
1690 aligned_offset += 4;
1691 }
1692
1693 if (!err)
1694 err = t3_seeprom_wp(adapter, 1);
1695 out:
1696 if (buf != data)
1697 kfree(buf);
1698 return err;
1699 }
1700
1701 static void get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
1702 {
1703 wol->supported = 0;
1704 wol->wolopts = 0;
1705 memset(&wol->sopass, 0, sizeof(wol->sopass));
1706 }
1707
1708 static const struct ethtool_ops cxgb_ethtool_ops = {
1709 .get_settings = get_settings,
1710 .set_settings = set_settings,
1711 .get_drvinfo = get_drvinfo,
1712 .get_msglevel = get_msglevel,
1713 .set_msglevel = set_msglevel,
1714 .get_ringparam = get_sge_param,
1715 .set_ringparam = set_sge_param,
1716 .get_coalesce = get_coalesce,
1717 .set_coalesce = set_coalesce,
1718 .get_eeprom_len = get_eeprom_len,
1719 .get_eeprom = get_eeprom,
1720 .set_eeprom = set_eeprom,
1721 .get_pauseparam = get_pauseparam,
1722 .set_pauseparam = set_pauseparam,
1723 .get_rx_csum = get_rx_csum,
1724 .set_rx_csum = set_rx_csum,
1725 .set_tx_csum = ethtool_op_set_tx_csum,
1726 .set_sg = ethtool_op_set_sg,
1727 .get_link = ethtool_op_get_link,
1728 .get_strings = get_strings,
1729 .phys_id = cxgb3_phys_id,
1730 .nway_reset = restart_autoneg,
1731 .get_sset_count = get_sset_count,
1732 .get_ethtool_stats = get_stats,
1733 .get_regs_len = get_regs_len,
1734 .get_regs = get_regs,
1735 .get_wol = get_wol,
1736 .set_tso = ethtool_op_set_tso,
1737 };
1738
1739 static int in_range(int val, int lo, int hi)
1740 {
1741 return val < 0 || (val <= hi && val >= lo);
1742 }
1743
1744 static int cxgb_extension_ioctl(struct net_device *dev, void __user *useraddr)
1745 {
1746 struct port_info *pi = netdev_priv(dev);
1747 struct adapter *adapter = pi->adapter;
1748 u32 cmd;
1749 int ret;
1750
1751 if (copy_from_user(&cmd, useraddr, sizeof(cmd)))
1752 return -EFAULT;
1753
1754 switch (cmd) {
1755 case CHELSIO_SET_QSET_PARAMS:{
1756 int i;
1757 struct qset_params *q;
1758 struct ch_qset_params t;
1759
1760 if (!capable(CAP_NET_ADMIN))
1761 return -EPERM;
1762 if (copy_from_user(&t, useraddr, sizeof(t)))
1763 return -EFAULT;
1764 if (t.qset_idx >= SGE_QSETS)
1765 return -EINVAL;
1766 if (!in_range(t.intr_lat, 0, M_NEWTIMER) ||
1767 !in_range(t.cong_thres, 0, 255) ||
1768 !in_range(t.txq_size[0], MIN_TXQ_ENTRIES,
1769 MAX_TXQ_ENTRIES) ||
1770 !in_range(t.txq_size[1], MIN_TXQ_ENTRIES,
1771 MAX_TXQ_ENTRIES) ||
1772 !in_range(t.txq_size[2], MIN_CTRL_TXQ_ENTRIES,
1773 MAX_CTRL_TXQ_ENTRIES) ||
1774 !in_range(t.fl_size[0], MIN_FL_ENTRIES,
1775 MAX_RX_BUFFERS)
1776 || !in_range(t.fl_size[1], MIN_FL_ENTRIES,
1777 MAX_RX_JUMBO_BUFFERS)
1778 || !in_range(t.rspq_size, MIN_RSPQ_ENTRIES,
1779 MAX_RSPQ_ENTRIES))
1780 return -EINVAL;
1781 if ((adapter->flags & FULL_INIT_DONE) &&
1782 (t.rspq_size >= 0 || t.fl_size[0] >= 0 ||
1783 t.fl_size[1] >= 0 || t.txq_size[0] >= 0 ||
1784 t.txq_size[1] >= 0 || t.txq_size[2] >= 0 ||
1785 t.polling >= 0 || t.cong_thres >= 0))
1786 return -EBUSY;
1787
1788 q = &adapter->params.sge.qset[t.qset_idx];
1789
1790 if (t.rspq_size >= 0)
1791 q->rspq_size = t.rspq_size;
1792 if (t.fl_size[0] >= 0)
1793 q->fl_size = t.fl_size[0];
1794 if (t.fl_size[1] >= 0)
1795 q->jumbo_size = t.fl_size[1];
1796 if (t.txq_size[0] >= 0)
1797 q->txq_size[0] = t.txq_size[0];
1798 if (t.txq_size[1] >= 0)
1799 q->txq_size[1] = t.txq_size[1];
1800 if (t.txq_size[2] >= 0)
1801 q->txq_size[2] = t.txq_size[2];
1802 if (t.cong_thres >= 0)
1803 q->cong_thres = t.cong_thres;
1804 if (t.intr_lat >= 0) {
1805 struct sge_qset *qs =
1806 &adapter->sge.qs[t.qset_idx];
1807
1808 q->coalesce_usecs = t.intr_lat;
1809 t3_update_qset_coalesce(qs, q);
1810 }
1811 if (t.polling >= 0) {
1812 if (adapter->flags & USING_MSIX)
1813 q->polling = t.polling;
1814 else {
1815 /* No polling with INTx for T3A */
1816 if (adapter->params.rev == 0 &&
1817 !(adapter->flags & USING_MSI))
1818 t.polling = 0;
1819
1820 for (i = 0; i < SGE_QSETS; i++) {
1821 q = &adapter->params.sge.
1822 qset[i];
1823 q->polling = t.polling;
1824 }
1825 }
1826 }
1827 break;
1828 }
1829 case CHELSIO_GET_QSET_PARAMS:{
1830 struct qset_params *q;
1831 struct ch_qset_params t;
1832
1833 if (copy_from_user(&t, useraddr, sizeof(t)))
1834 return -EFAULT;
1835 if (t.qset_idx >= SGE_QSETS)
1836 return -EINVAL;
1837
1838 q = &adapter->params.sge.qset[t.qset_idx];
1839 t.rspq_size = q->rspq_size;
1840 t.txq_size[0] = q->txq_size[0];
1841 t.txq_size[1] = q->txq_size[1];
1842 t.txq_size[2] = q->txq_size[2];
1843 t.fl_size[0] = q->fl_size;
1844 t.fl_size[1] = q->jumbo_size;
1845 t.polling = q->polling;
1846 t.intr_lat = q->coalesce_usecs;
1847 t.cong_thres = q->cong_thres;
1848
1849 if (copy_to_user(useraddr, &t, sizeof(t)))
1850 return -EFAULT;
1851 break;
1852 }
1853 case CHELSIO_SET_QSET_NUM:{
1854 struct ch_reg edata;
1855 unsigned int i, first_qset = 0, other_qsets = 0;
1856
1857 if (!capable(CAP_NET_ADMIN))
1858 return -EPERM;
1859 if (adapter->flags & FULL_INIT_DONE)
1860 return -EBUSY;
1861 if (copy_from_user(&edata, useraddr, sizeof(edata)))
1862 return -EFAULT;
1863 if (edata.val < 1 ||
1864 (edata.val > 1 && !(adapter->flags & USING_MSIX)))
1865 return -EINVAL;
1866
1867 for_each_port(adapter, i)
1868 if (adapter->port[i] && adapter->port[i] != dev)
1869 other_qsets += adap2pinfo(adapter, i)->nqsets;
1870
1871 if (edata.val + other_qsets > SGE_QSETS)
1872 return -EINVAL;
1873
1874 pi->nqsets = edata.val;
1875
1876 for_each_port(adapter, i)
1877 if (adapter->port[i]) {
1878 pi = adap2pinfo(adapter, i);
1879 pi->first_qset = first_qset;
1880 first_qset += pi->nqsets;
1881 }
1882 break;
1883 }
1884 case CHELSIO_GET_QSET_NUM:{
1885 struct ch_reg edata;
1886
1887 edata.cmd = CHELSIO_GET_QSET_NUM;
1888 edata.val = pi->nqsets;
1889 if (copy_to_user(useraddr, &edata, sizeof(edata)))
1890 return -EFAULT;
1891 break;
1892 }
1893 case CHELSIO_LOAD_FW:{
1894 u8 *fw_data;
1895 struct ch_mem_range t;
1896
1897 if (!capable(CAP_NET_ADMIN))
1898 return -EPERM;
1899 if (copy_from_user(&t, useraddr, sizeof(t)))
1900 return -EFAULT;
1901
1902 fw_data = kmalloc(t.len, GFP_KERNEL);
1903 if (!fw_data)
1904 return -ENOMEM;
1905
1906 if (copy_from_user
1907 (fw_data, useraddr + sizeof(t), t.len)) {
1908 kfree(fw_data);
1909 return -EFAULT;
1910 }
1911
1912 ret = t3_load_fw(adapter, fw_data, t.len);
1913 kfree(fw_data);
1914 if (ret)
1915 return ret;
1916 break;
1917 }
1918 case CHELSIO_SETMTUTAB:{
1919 struct ch_mtus m;
1920 int i;
1921
1922 if (!is_offload(adapter))
1923 return -EOPNOTSUPP;
1924 if (!capable(CAP_NET_ADMIN))
1925 return -EPERM;
1926 if (offload_running(adapter))
1927 return -EBUSY;
1928 if (copy_from_user(&m, useraddr, sizeof(m)))
1929 return -EFAULT;
1930 if (m.nmtus != NMTUS)
1931 return -EINVAL;
1932 if (m.mtus[0] < 81) /* accommodate SACK */
1933 return -EINVAL;
1934
1935 /* MTUs must be in ascending order */
1936 for (i = 1; i < NMTUS; ++i)
1937 if (m.mtus[i] < m.mtus[i - 1])
1938 return -EINVAL;
1939
1940 memcpy(adapter->params.mtus, m.mtus,
1941 sizeof(adapter->params.mtus));
1942 break;
1943 }
1944 case CHELSIO_GET_PM:{
1945 struct tp_params *p = &adapter->params.tp;
1946 struct ch_pm m = {.cmd = CHELSIO_GET_PM };
1947
1948 if (!is_offload(adapter))
1949 return -EOPNOTSUPP;
1950 m.tx_pg_sz = p->tx_pg_size;
1951 m.tx_num_pg = p->tx_num_pgs;
1952 m.rx_pg_sz = p->rx_pg_size;
1953 m.rx_num_pg = p->rx_num_pgs;
1954 m.pm_total = p->pmtx_size + p->chan_rx_size * p->nchan;
1955 if (copy_to_user(useraddr, &m, sizeof(m)))
1956 return -EFAULT;
1957 break;
1958 }
1959 case CHELSIO_SET_PM:{
1960 struct ch_pm m;
1961 struct tp_params *p = &adapter->params.tp;
1962
1963 if (!is_offload(adapter))
1964 return -EOPNOTSUPP;
1965 if (!capable(CAP_NET_ADMIN))
1966 return -EPERM;
1967 if (adapter->flags & FULL_INIT_DONE)
1968 return -EBUSY;
1969 if (copy_from_user(&m, useraddr, sizeof(m)))
1970 return -EFAULT;
1971 if (!is_power_of_2(m.rx_pg_sz) ||
1972 !is_power_of_2(m.tx_pg_sz))
1973 return -EINVAL; /* not power of 2 */
1974 if (!(m.rx_pg_sz & 0x14000))
1975 return -EINVAL; /* not 16KB or 64KB */
1976 if (!(m.tx_pg_sz & 0x1554000))
1977 return -EINVAL;
1978 if (m.tx_num_pg == -1)
1979 m.tx_num_pg = p->tx_num_pgs;
1980 if (m.rx_num_pg == -1)
1981 m.rx_num_pg = p->rx_num_pgs;
1982 if (m.tx_num_pg % 24 || m.rx_num_pg % 24)
1983 return -EINVAL;
1984 if (m.rx_num_pg * m.rx_pg_sz > p->chan_rx_size ||
1985 m.tx_num_pg * m.tx_pg_sz > p->chan_tx_size)
1986 return -EINVAL;
1987 p->rx_pg_size = m.rx_pg_sz;
1988 p->tx_pg_size = m.tx_pg_sz;
1989 p->rx_num_pgs = m.rx_num_pg;
1990 p->tx_num_pgs = m.tx_num_pg;
1991 break;
1992 }
1993 case CHELSIO_GET_MEM:{
1994 struct ch_mem_range t;
1995 struct mc7 *mem;
1996 u64 buf[32];
1997
1998 if (!is_offload(adapter))
1999 return -EOPNOTSUPP;
2000 if (!(adapter->flags & FULL_INIT_DONE))
2001 return -EIO; /* need the memory controllers */
2002 if (copy_from_user(&t, useraddr, sizeof(t)))
2003 return -EFAULT;
2004 if ((t.addr & 7) || (t.len & 7))
2005 return -EINVAL;
2006 if (t.mem_id == MEM_CM)
2007 mem = &adapter->cm;
2008 else if (t.mem_id == MEM_PMRX)
2009 mem = &adapter->pmrx;
2010 else if (t.mem_id == MEM_PMTX)
2011 mem = &adapter->pmtx;
2012 else
2013 return -EINVAL;
2014
2015 /*
2016 * Version scheme:
2017 * bits 0..9: chip version
2018 * bits 10..15: chip revision
2019 */
2020 t.version = 3 | (adapter->params.rev << 10);
2021 if (copy_to_user(useraddr, &t, sizeof(t)))
2022 return -EFAULT;
2023
2024 /*
2025 * Read 256 bytes at a time as len can be large and we don't
2026 * want to use huge intermediate buffers.
2027 */
2028 useraddr += sizeof(t); /* advance to start of buffer */
2029 while (t.len) {
2030 unsigned int chunk =
2031 min_t(unsigned int, t.len, sizeof(buf));
2032
2033 ret =
2034 t3_mc7_bd_read(mem, t.addr / 8, chunk / 8,
2035 buf);
2036 if (ret)
2037 return ret;
2038 if (copy_to_user(useraddr, buf, chunk))
2039 return -EFAULT;
2040 useraddr += chunk;
2041 t.addr += chunk;
2042 t.len -= chunk;
2043 }
2044 break;
2045 }
2046 case CHELSIO_SET_TRACE_FILTER:{
2047 struct ch_trace t;
2048 const struct trace_params *tp;
2049
2050 if (!capable(CAP_NET_ADMIN))
2051 return -EPERM;
2052 if (!offload_running(adapter))
2053 return -EAGAIN;
2054 if (copy_from_user(&t, useraddr, sizeof(t)))
2055 return -EFAULT;
2056
2057 tp = (const struct trace_params *)&t.sip;
2058 if (t.config_tx)
2059 t3_config_trace_filter(adapter, tp, 0,
2060 t.invert_match,
2061 t.trace_tx);
2062 if (t.config_rx)
2063 t3_config_trace_filter(adapter, tp, 1,
2064 t.invert_match,
2065 t.trace_rx);
2066 break;
2067 }
2068 default:
2069 return -EOPNOTSUPP;
2070 }
2071 return 0;
2072 }
2073
2074 static int cxgb_ioctl(struct net_device *dev, struct ifreq *req, int cmd)
2075 {
2076 struct mii_ioctl_data *data = if_mii(req);
2077 struct port_info *pi = netdev_priv(dev);
2078 struct adapter *adapter = pi->adapter;
2079 int ret, mmd;
2080
2081 switch (cmd) {
2082 case SIOCGMIIPHY:
2083 data->phy_id = pi->phy.addr;
2084 /* FALLTHRU */
2085 case SIOCGMIIREG:{
2086 u32 val;
2087 struct cphy *phy = &pi->phy;
2088
2089 if (!phy->mdio_read)
2090 return -EOPNOTSUPP;
2091 if (is_10G(adapter)) {
2092 mmd = data->phy_id >> 8;
2093 if (!mmd)
2094 mmd = MDIO_DEV_PCS;
2095 else if (mmd > MDIO_DEV_XGXS)
2096 return -EINVAL;
2097
2098 ret =
2099 phy->mdio_read(adapter, data->phy_id & 0x1f,
2100 mmd, data->reg_num, &val);
2101 } else
2102 ret =
2103 phy->mdio_read(adapter, data->phy_id & 0x1f,
2104 0, data->reg_num & 0x1f,
2105 &val);
2106 if (!ret)
2107 data->val_out = val;
2108 break;
2109 }
2110 case SIOCSMIIREG:{
2111 struct cphy *phy = &pi->phy;
2112
2113 if (!capable(CAP_NET_ADMIN))
2114 return -EPERM;
2115 if (!phy->mdio_write)
2116 return -EOPNOTSUPP;
2117 if (is_10G(adapter)) {
2118 mmd = data->phy_id >> 8;
2119 if (!mmd)
2120 mmd = MDIO_DEV_PCS;
2121 else if (mmd > MDIO_DEV_XGXS)
2122 return -EINVAL;
2123
2124 ret =
2125 phy->mdio_write(adapter,
2126 data->phy_id & 0x1f, mmd,
2127 data->reg_num,
2128 data->val_in);
2129 } else
2130 ret =
2131 phy->mdio_write(adapter,
2132 data->phy_id & 0x1f, 0,
2133 data->reg_num & 0x1f,
2134 data->val_in);
2135 break;
2136 }
2137 case SIOCCHIOCTL:
2138 return cxgb_extension_ioctl(dev, req->ifr_data);
2139 default:
2140 return -EOPNOTSUPP;
2141 }
2142 return ret;
2143 }
2144
2145 static int cxgb_change_mtu(struct net_device *dev, int new_mtu)
2146 {
2147 struct port_info *pi = netdev_priv(dev);
2148 struct adapter *adapter = pi->adapter;
2149 int ret;
2150
2151 if (new_mtu < 81) /* accommodate SACK */
2152 return -EINVAL;
2153 if ((ret = t3_mac_set_mtu(&pi->mac, new_mtu)))
2154 return ret;
2155 dev->mtu = new_mtu;
2156 init_port_mtus(adapter);
2157 if (adapter->params.rev == 0 && offload_running(adapter))
2158 t3_load_mtus(adapter, adapter->params.mtus,
2159 adapter->params.a_wnd, adapter->params.b_wnd,
2160 adapter->port[0]->mtu);
2161 return 0;
2162 }
2163
2164 static int cxgb_set_mac_addr(struct net_device *dev, void *p)
2165 {
2166 struct port_info *pi = netdev_priv(dev);
2167 struct adapter *adapter = pi->adapter;
2168 struct sockaddr *addr = p;
2169
2170 if (!is_valid_ether_addr(addr->sa_data))
2171 return -EINVAL;
2172
2173 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
2174 t3_mac_set_address(&pi->mac, 0, dev->dev_addr);
2175 if (offload_running(adapter))
2176 write_smt_entry(adapter, pi->port_id);
2177 return 0;
2178 }
2179
2180 /**
2181 * t3_synchronize_rx - wait for current Rx processing on a port to complete
2182 * @adap: the adapter
2183 * @p: the port
2184 *
2185 * Ensures that current Rx processing on any of the queues associated with
2186 * the given port completes before returning. We do this by acquiring and
2187 * releasing the locks of the response queues associated with the port.
2188 */
2189 static void t3_synchronize_rx(struct adapter *adap, const struct port_info *p)
2190 {
2191 int i;
2192
2193 for (i = 0; i < p->nqsets; i++) {
2194 struct sge_rspq *q = &adap->sge.qs[i + p->first_qset].rspq;
2195
2196 spin_lock_irq(&q->lock);
2197 spin_unlock_irq(&q->lock);
2198 }
2199 }
2200
2201 static void vlan_rx_register(struct net_device *dev, struct vlan_group *grp)
2202 {
2203 struct port_info *pi = netdev_priv(dev);
2204 struct adapter *adapter = pi->adapter;
2205
2206 pi->vlan_grp = grp;
2207 if (adapter->params.rev > 0)
2208 t3_set_vlan_accel(adapter, 1 << pi->port_id, grp != NULL);
2209 else {
2210 /* single control for all ports */
2211 unsigned int i, have_vlans = 0;
2212 for_each_port(adapter, i)
2213 have_vlans |= adap2pinfo(adapter, i)->vlan_grp != NULL;
2214
2215 t3_set_vlan_accel(adapter, 1, have_vlans);
2216 }
2217 t3_synchronize_rx(adapter, pi);
2218 }
2219
2220 #ifdef CONFIG_NET_POLL_CONTROLLER
2221 static void cxgb_netpoll(struct net_device *dev)
2222 {
2223 struct port_info *pi = netdev_priv(dev);
2224 struct adapter *adapter = pi->adapter;
2225 int qidx;
2226
2227 for (qidx = pi->first_qset; qidx < pi->first_qset + pi->nqsets; qidx++) {
2228 struct sge_qset *qs = &adapter->sge.qs[qidx];
2229 void *source;
2230
2231 if (adapter->flags & USING_MSIX)
2232 source = qs;
2233 else
2234 source = adapter;
2235
2236 t3_intr_handler(adapter, qs->rspq.polling) (0, source);
2237 }
2238 }
2239 #endif
2240
2241 /*
2242 * Periodic accumulation of MAC statistics.
2243 */
2244 static void mac_stats_update(struct adapter *adapter)
2245 {
2246 int i;
2247
2248 for_each_port(adapter, i) {
2249 struct net_device *dev = adapter->port[i];
2250 struct port_info *p = netdev_priv(dev);
2251
2252 if (netif_running(dev)) {
2253 spin_lock(&adapter->stats_lock);
2254 t3_mac_update_stats(&p->mac);
2255 spin_unlock(&adapter->stats_lock);
2256 }
2257 }
2258 }
2259
2260 static void check_link_status(struct adapter *adapter)
2261 {
2262 int i;
2263
2264 for_each_port(adapter, i) {
2265 struct net_device *dev = adapter->port[i];
2266 struct port_info *p = netdev_priv(dev);
2267
2268 if (!(p->port_type->caps & SUPPORTED_IRQ) && netif_running(dev))
2269 t3_link_changed(adapter, i);
2270 }
2271 }
2272
2273 static void check_t3b2_mac(struct adapter *adapter)
2274 {
2275 int i;
2276
2277 if (!rtnl_trylock()) /* synchronize with ifdown */
2278 return;
2279
2280 for_each_port(adapter, i) {
2281 struct net_device *dev = adapter->port[i];
2282 struct port_info *p = netdev_priv(dev);
2283 int status;
2284
2285 if (!netif_running(dev))
2286 continue;
2287
2288 status = 0;
2289 if (netif_running(dev) && netif_carrier_ok(dev))
2290 status = t3b2_mac_watchdog_task(&p->mac);
2291 if (status == 1)
2292 p->mac.stats.num_toggled++;
2293 else if (status == 2) {
2294 struct cmac *mac = &p->mac;
2295
2296 t3_mac_set_mtu(mac, dev->mtu);
2297 t3_mac_set_address(mac, 0, dev->dev_addr);
2298 cxgb_set_rxmode(dev);
2299 t3_link_start(&p->phy, mac, &p->link_config);
2300 t3_mac_enable(mac, MAC_DIRECTION_RX | MAC_DIRECTION_TX);
2301 t3_port_intr_enable(adapter, p->port_id);
2302 p->mac.stats.num_resets++;
2303 }
2304 }
2305 rtnl_unlock();
2306 }
2307
2308
2309 static void t3_adap_check_task(struct work_struct *work)
2310 {
2311 struct adapter *adapter = container_of(work, struct adapter,
2312 adap_check_task.work);
2313 const struct adapter_params *p = &adapter->params;
2314
2315 adapter->check_task_cnt++;
2316
2317 /* Check link status for PHYs without interrupts */
2318 if (p->linkpoll_period)
2319 check_link_status(adapter);
2320
2321 /* Accumulate MAC stats if needed */
2322 if (!p->linkpoll_period ||
2323 (adapter->check_task_cnt * p->linkpoll_period) / 10 >=
2324 p->stats_update_period) {
2325 mac_stats_update(adapter);
2326 adapter->check_task_cnt = 0;
2327 }
2328
2329 if (p->rev == T3_REV_B2)
2330 check_t3b2_mac(adapter);
2331
2332 /* Schedule the next check update if any port is active. */
2333 spin_lock(&adapter->work_lock);
2334 if (adapter->open_device_map & PORT_MASK)
2335 schedule_chk_task(adapter);
2336 spin_unlock(&adapter->work_lock);
2337 }
2338
2339 /*
2340 * Processes external (PHY) interrupts in process context.
2341 */
2342 static void ext_intr_task(struct work_struct *work)
2343 {
2344 struct adapter *adapter = container_of(work, struct adapter,
2345 ext_intr_handler_task);
2346
2347 t3_phy_intr_handler(adapter);
2348
2349 /* Now reenable external interrupts */
2350 spin_lock_irq(&adapter->work_lock);
2351 if (adapter->slow_intr_mask) {
2352 adapter->slow_intr_mask |= F_T3DBG;
2353 t3_write_reg(adapter, A_PL_INT_CAUSE0, F_T3DBG);
2354 t3_write_reg(adapter, A_PL_INT_ENABLE0,
2355 adapter->slow_intr_mask);
2356 }
2357 spin_unlock_irq(&adapter->work_lock);
2358 }
2359
2360 /*
2361 * Interrupt-context handler for external (PHY) interrupts.
2362 */
2363 void t3_os_ext_intr_handler(struct adapter *adapter)
2364 {
2365 /*
2366 * Schedule a task to handle external interrupts as they may be slow
2367 * and we use a mutex to protect MDIO registers. We disable PHY
2368 * interrupts in the meantime and let the task reenable them when
2369 * it's done.
2370 */
2371 spin_lock(&adapter->work_lock);
2372 if (adapter->slow_intr_mask) {
2373 adapter->slow_intr_mask &= ~F_T3DBG;
2374 t3_write_reg(adapter, A_PL_INT_ENABLE0,
2375 adapter->slow_intr_mask);
2376 queue_work(cxgb3_wq, &adapter->ext_intr_handler_task);
2377 }
2378 spin_unlock(&adapter->work_lock);
2379 }
2380
2381 void t3_fatal_err(struct adapter *adapter)
2382 {
2383 unsigned int fw_status[4];
2384
2385 if (adapter->flags & FULL_INIT_DONE) {
2386 t3_sge_stop(adapter);
2387 t3_write_reg(adapter, A_XGM_TX_CTRL, 0);
2388 t3_write_reg(adapter, A_XGM_RX_CTRL, 0);
2389 t3_write_reg(adapter, XGM_REG(A_XGM_TX_CTRL, 1), 0);
2390 t3_write_reg(adapter, XGM_REG(A_XGM_RX_CTRL, 1), 0);
2391 t3_intr_disable(adapter);
2392 }
2393 CH_ALERT(adapter, "encountered fatal error, operation suspended\n");
2394 if (!t3_cim_ctl_blk_read(adapter, 0xa0, 4, fw_status))
2395 CH_ALERT(adapter, "FW status: 0x%x, 0x%x, 0x%x, 0x%x\n",
2396 fw_status[0], fw_status[1],
2397 fw_status[2], fw_status[3]);
2398
2399 }
2400
2401 /**
2402 * t3_io_error_detected - called when PCI error is detected
2403 * @pdev: Pointer to PCI device
2404 * @state: The current pci connection state
2405 *
2406 * This function is called after a PCI bus error affecting
2407 * this device has been detected.
2408 */
2409 static pci_ers_result_t t3_io_error_detected(struct pci_dev *pdev,
2410 pci_channel_state_t state)
2411 {
2412 struct adapter *adapter = pci_get_drvdata(pdev);
2413 int i;
2414
2415 /* Stop all ports */
2416 for_each_port(adapter, i) {
2417 struct net_device *netdev = adapter->port[i];
2418
2419 if (netif_running(netdev))
2420 cxgb_close(netdev);
2421 }
2422
2423 if (is_offload(adapter) &&
2424 test_bit(OFFLOAD_DEVMAP_BIT, &adapter->open_device_map))
2425 offload_close(&adapter->tdev);
2426
2427 /* Free sge resources */
2428 t3_free_sge_resources(adapter);
2429
2430 adapter->flags &= ~FULL_INIT_DONE;
2431
2432 pci_disable_device(pdev);
2433
2434 /* Request a slot slot reset. */
2435 return PCI_ERS_RESULT_NEED_RESET;
2436 }
2437
2438 /**
2439 * t3_io_slot_reset - called after the pci bus has been reset.
2440 * @pdev: Pointer to PCI device
2441 *
2442 * Restart the card from scratch, as if from a cold-boot.
2443 */
2444 static pci_ers_result_t t3_io_slot_reset(struct pci_dev *pdev)
2445 {
2446 struct adapter *adapter = pci_get_drvdata(pdev);
2447
2448 if (pci_enable_device(pdev)) {
2449 dev_err(&pdev->dev,
2450 "Cannot re-enable PCI device after reset.\n");
2451 return PCI_ERS_RESULT_DISCONNECT;
2452 }
2453 pci_set_master(pdev);
2454
2455 t3_prep_adapter(adapter, adapter->params.info, 1);
2456
2457 return PCI_ERS_RESULT_RECOVERED;
2458 }
2459
2460 /**
2461 * t3_io_resume - called when traffic can start flowing again.
2462 * @pdev: Pointer to PCI device
2463 *
2464 * This callback is called when the error recovery driver tells us that
2465 * its OK to resume normal operation.
2466 */
2467 static void t3_io_resume(struct pci_dev *pdev)
2468 {
2469 struct adapter *adapter = pci_get_drvdata(pdev);
2470 int i;
2471
2472 /* Restart the ports */
2473 for_each_port(adapter, i) {
2474 struct net_device *netdev = adapter->port[i];
2475
2476 if (netif_running(netdev)) {
2477 if (cxgb_open(netdev)) {
2478 dev_err(&pdev->dev,
2479 "can't bring device back up"
2480 " after reset\n");
2481 continue;
2482 }
2483 netif_device_attach(netdev);
2484 }
2485 }
2486
2487 if (is_offload(adapter)) {
2488 __set_bit(OFFLOAD_DEVMAP_BIT, &adapter->registered_device_map);
2489 if (offload_open(adapter->port[0]))
2490 printk(KERN_WARNING
2491 "Could not bring back offload capabilities\n");
2492 }
2493 }
2494
2495 static struct pci_error_handlers t3_err_handler = {
2496 .error_detected = t3_io_error_detected,
2497 .slot_reset = t3_io_slot_reset,
2498 .resume = t3_io_resume,
2499 };
2500
2501 static int __devinit cxgb_enable_msix(struct adapter *adap)
2502 {
2503 struct msix_entry entries[SGE_QSETS + 1];
2504 int i, err;
2505
2506 for (i = 0; i < ARRAY_SIZE(entries); ++i)
2507 entries[i].entry = i;
2508
2509 err = pci_enable_msix(adap->pdev, entries, ARRAY_SIZE(entries));
2510 if (!err) {
2511 for (i = 0; i < ARRAY_SIZE(entries); ++i)
2512 adap->msix_info[i].vec = entries[i].vector;
2513 } else if (err > 0)
2514 dev_info(&adap->pdev->dev,
2515 "only %d MSI-X vectors left, not using MSI-X\n", err);
2516 return err;
2517 }
2518
2519 static void __devinit print_port_info(struct adapter *adap,
2520 const struct adapter_info *ai)
2521 {
2522 static const char *pci_variant[] = {
2523 "PCI", "PCI-X", "PCI-X ECC", "PCI-X 266", "PCI Express"
2524 };
2525
2526 int i;
2527 char buf[80];
2528
2529 if (is_pcie(adap))
2530 snprintf(buf, sizeof(buf), "%s x%d",
2531 pci_variant[adap->params.pci.variant],
2532 adap->params.pci.width);
2533 else
2534 snprintf(buf, sizeof(buf), "%s %dMHz/%d-bit",
2535 pci_variant[adap->params.pci.variant],
2536 adap->params.pci.speed, adap->params.pci.width);
2537
2538 for_each_port(adap, i) {
2539 struct net_device *dev = adap->port[i];
2540 const struct port_info *pi = netdev_priv(dev);
2541
2542 if (!test_bit(i, &adap->registered_device_map))
2543 continue;
2544 printk(KERN_INFO "%s: %s %s %sNIC (rev %d) %s%s\n",
2545 dev->name, ai->desc, pi->port_type->desc,
2546 is_offload(adap) ? "R" : "", adap->params.rev, buf,
2547 (adap->flags & USING_MSIX) ? " MSI-X" :
2548 (adap->flags & USING_MSI) ? " MSI" : "");
2549 if (adap->name == dev->name && adap->params.vpd.mclk)
2550 printk(KERN_INFO
2551 "%s: %uMB CM, %uMB PMTX, %uMB PMRX, S/N: %s\n",
2552 adap->name, t3_mc7_size(&adap->cm) >> 20,
2553 t3_mc7_size(&adap->pmtx) >> 20,
2554 t3_mc7_size(&adap->pmrx) >> 20,
2555 adap->params.vpd.sn);
2556 }
2557 }
2558
2559 static int __devinit init_one(struct pci_dev *pdev,
2560 const struct pci_device_id *ent)
2561 {
2562 static int version_printed;
2563
2564 int i, err, pci_using_dac = 0;
2565 unsigned long mmio_start, mmio_len;
2566 const struct adapter_info *ai;
2567 struct adapter *adapter = NULL;
2568 struct port_info *pi;
2569
2570 if (!version_printed) {
2571 printk(KERN_INFO "%s - version %s\n", DRV_DESC, DRV_VERSION);
2572 ++version_printed;
2573 }
2574
2575 if (!cxgb3_wq) {
2576 cxgb3_wq = create_singlethread_workqueue(DRV_NAME);
2577 if (!cxgb3_wq) {
2578 printk(KERN_ERR DRV_NAME
2579 ": cannot initialize work queue\n");
2580 return -ENOMEM;
2581 }
2582 }
2583
2584 err = pci_request_regions(pdev, DRV_NAME);
2585 if (err) {
2586 /* Just info, some other driver may have claimed the device. */
2587 dev_info(&pdev->dev, "cannot obtain PCI resources\n");
2588 return err;
2589 }
2590
2591 err = pci_enable_device(pdev);
2592 if (err) {
2593 dev_err(&pdev->dev, "cannot enable PCI device\n");
2594 goto out_release_regions;
2595 }
2596
2597 if (!pci_set_dma_mask(pdev, DMA_64BIT_MASK)) {
2598 pci_using_dac = 1;
2599 err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
2600 if (err) {
2601 dev_err(&pdev->dev, "unable to obtain 64-bit DMA for "
2602 "coherent allocations\n");
2603 goto out_disable_device;
2604 }
2605 } else if ((err = pci_set_dma_mask(pdev, DMA_32BIT_MASK)) != 0) {
2606 dev_err(&pdev->dev, "no usable DMA configuration\n");
2607 goto out_disable_device;
2608 }
2609
2610 pci_set_master(pdev);
2611
2612 mmio_start = pci_resource_start(pdev, 0);
2613 mmio_len = pci_resource_len(pdev, 0);
2614 ai = t3_get_adapter_info(ent->driver_data);
2615
2616 adapter = kzalloc(sizeof(*adapter), GFP_KERNEL);
2617 if (!adapter) {
2618 err = -ENOMEM;
2619 goto out_disable_device;
2620 }
2621
2622 adapter->regs = ioremap_nocache(mmio_start, mmio_len);
2623 if (!adapter->regs) {
2624 dev_err(&pdev->dev, "cannot map device registers\n");
2625 err = -ENOMEM;
2626 goto out_free_adapter;
2627 }
2628
2629 adapter->pdev = pdev;
2630 adapter->name = pci_name(pdev);
2631 adapter->msg_enable = dflt_msg_enable;
2632 adapter->mmio_len = mmio_len;
2633
2634 mutex_init(&adapter->mdio_lock);
2635 spin_lock_init(&adapter->work_lock);
2636 spin_lock_init(&adapter->stats_lock);
2637
2638 INIT_LIST_HEAD(&adapter->adapter_list);
2639 INIT_WORK(&adapter->ext_intr_handler_task, ext_intr_task);
2640 INIT_DELAYED_WORK(&adapter->adap_check_task, t3_adap_check_task);
2641
2642 for (i = 0; i < ai->nports; ++i) {
2643 struct net_device *netdev;
2644
2645 netdev = alloc_etherdev(sizeof(struct port_info));
2646 if (!netdev) {
2647 err = -ENOMEM;
2648 goto out_free_dev;
2649 }
2650
2651 SET_NETDEV_DEV(netdev, &pdev->dev);
2652
2653 adapter->port[i] = netdev;
2654 pi = netdev_priv(netdev);
2655 pi->adapter = adapter;
2656 pi->rx_csum_offload = 1;
2657 pi->nqsets = 1;
2658 pi->first_qset = i;
2659 pi->activity = 0;
2660 pi->port_id = i;
2661 netif_carrier_off(netdev);
2662 netdev->irq = pdev->irq;
2663 netdev->mem_start = mmio_start;
2664 netdev->mem_end = mmio_start + mmio_len - 1;
2665 netdev->features |= NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO;
2666 netdev->features |= NETIF_F_LLTX;
2667 if (pci_using_dac)
2668 netdev->features |= NETIF_F_HIGHDMA;
2669
2670 netdev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
2671 netdev->vlan_rx_register = vlan_rx_register;
2672
2673 netdev->open = cxgb_open;
2674 netdev->stop = cxgb_close;
2675 netdev->hard_start_xmit = t3_eth_xmit;
2676 netdev->get_stats = cxgb_get_stats;
2677 netdev->set_multicast_list = cxgb_set_rxmode;
2678 netdev->do_ioctl = cxgb_ioctl;
2679 netdev->change_mtu = cxgb_change_mtu;
2680 netdev->set_mac_address = cxgb_set_mac_addr;
2681 #ifdef CONFIG_NET_POLL_CONTROLLER
2682 netdev->poll_controller = cxgb_netpoll;
2683 #endif
2684
2685 SET_ETHTOOL_OPS(netdev, &cxgb_ethtool_ops);
2686 }
2687
2688 pci_set_drvdata(pdev, adapter);
2689 if (t3_prep_adapter(adapter, ai, 1) < 0) {
2690 err = -ENODEV;
2691 goto out_free_dev;
2692 }
2693
2694 /*
2695 * The card is now ready to go. If any errors occur during device
2696 * registration we do not fail the whole card but rather proceed only
2697 * with the ports we manage to register successfully. However we must
2698 * register at least one net device.
2699 */
2700 for_each_port(adapter, i) {
2701 err = register_netdev(adapter->port[i]);
2702 if (err)
2703 dev_warn(&pdev->dev,
2704 "cannot register net device %s, skipping\n",
2705 adapter->port[i]->name);
2706 else {
2707 /*
2708 * Change the name we use for messages to the name of
2709 * the first successfully registered interface.
2710 */
2711 if (!adapter->registered_device_map)
2712 adapter->name = adapter->port[i]->name;
2713
2714 __set_bit(i, &adapter->registered_device_map);
2715 }
2716 }
2717 if (!adapter->registered_device_map) {
2718 dev_err(&pdev->dev, "could not register any net devices\n");
2719 goto out_free_dev;
2720 }
2721
2722 /* Driver's ready. Reflect it on LEDs */
2723 t3_led_ready(adapter);
2724
2725 if (is_offload(adapter)) {
2726 __set_bit(OFFLOAD_DEVMAP_BIT, &adapter->registered_device_map);
2727 cxgb3_adapter_ofld(adapter);
2728 }
2729
2730 /* See what interrupts we'll be using */
2731 if (msi > 1 && cxgb_enable_msix(adapter) == 0)
2732 adapter->flags |= USING_MSIX;
2733 else if (msi > 0 && pci_enable_msi(pdev) == 0)
2734 adapter->flags |= USING_MSI;
2735
2736 err = sysfs_create_group(&adapter->port[0]->dev.kobj,
2737 &cxgb3_attr_group);
2738
2739 print_port_info(adapter, ai);
2740 return 0;
2741
2742 out_free_dev:
2743 iounmap(adapter->regs);
2744 for (i = ai->nports - 1; i >= 0; --i)
2745 if (adapter->port[i])
2746 free_netdev(adapter->port[i]);
2747
2748 out_free_adapter:
2749 kfree(adapter);
2750
2751 out_disable_device:
2752 pci_disable_device(pdev);
2753 out_release_regions:
2754 pci_release_regions(pdev);
2755 pci_set_drvdata(pdev, NULL);
2756 return err;
2757 }
2758
2759 static void __devexit remove_one(struct pci_dev *pdev)
2760 {
2761 struct adapter *adapter = pci_get_drvdata(pdev);
2762
2763 if (adapter) {
2764 int i;
2765
2766 t3_sge_stop(adapter);
2767 sysfs_remove_group(&adapter->port[0]->dev.kobj,
2768 &cxgb3_attr_group);
2769
2770 if (is_offload(adapter)) {
2771 cxgb3_adapter_unofld(adapter);
2772 if (test_bit(OFFLOAD_DEVMAP_BIT,
2773 &adapter->open_device_map))
2774 offload_close(&adapter->tdev);
2775 }
2776
2777 for_each_port(adapter, i)
2778 if (test_bit(i, &adapter->registered_device_map))
2779 unregister_netdev(adapter->port[i]);
2780
2781 t3_free_sge_resources(adapter);
2782 cxgb_disable_msi(adapter);
2783
2784 for_each_port(adapter, i)
2785 if (adapter->port[i])
2786 free_netdev(adapter->port[i]);
2787
2788 iounmap(adapter->regs);
2789 kfree(adapter);
2790 pci_release_regions(pdev);
2791 pci_disable_device(pdev);
2792 pci_set_drvdata(pdev, NULL);
2793 }
2794 }
2795
2796 static struct pci_driver driver = {
2797 .name = DRV_NAME,
2798 .id_table = cxgb3_pci_tbl,
2799 .probe = init_one,
2800 .remove = __devexit_p(remove_one),
2801 .err_handler = &t3_err_handler,
2802 };
2803
2804 static int __init cxgb3_init_module(void)
2805 {
2806 int ret;
2807
2808 cxgb3_offload_init();
2809
2810 ret = pci_register_driver(&driver);
2811 return ret;
2812 }
2813
2814 static void __exit cxgb3_cleanup_module(void)
2815 {
2816 pci_unregister_driver(&driver);
2817 if (cxgb3_wq)
2818 destroy_workqueue(cxgb3_wq);
2819 }
2820
2821 module_init(cxgb3_init_module);
2822 module_exit(cxgb3_cleanup_module);
WRT350N Kernel Patches