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[ARM] fix section mismatch warning in board-sam9260
[linux-2.6/sactl.git] / drivers / net / ehea / ehea_main.c
blob0e4042bc0a48e44c570b54b7e205ff3a8a8e58eb
1 /*
2 * linux/drivers/net/ehea/ehea_main.c
3 *
4 * eHEA ethernet device driver for IBM eServer System p
5 *
6 * (C) Copyright IBM Corp. 2006
7 *
8 * Authors:
9 * Christoph Raisch <raisch@de.ibm.com>
10 * Jan-Bernd Themann <themann@de.ibm.com>
11 * Thomas Klein <tklein@de.ibm.com>
12 *
13 *
14 * This program is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License as published by
16 * the Free Software Foundation; either version 2, or (at your option)
17 * any later version.
18 *
19 * This program is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU General Public License for more details.
23 *
24 * You should have received a copy of the GNU General Public License
25 * along with this program; if not, write to the Free Software
26 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
27 */
28
29 #include <linux/in.h>
30 #include <linux/ip.h>
31 #include <linux/tcp.h>
32 #include <linux/udp.h>
33 #include <linux/if.h>
34 #include <linux/list.h>
35 #include <linux/if_ether.h>
36 #include <net/ip.h>
37
38 #include "ehea.h"
39 #include "ehea_qmr.h"
40 #include "ehea_phyp.h"
41
42
43 MODULE_LICENSE("GPL");
44 MODULE_AUTHOR("Christoph Raisch <raisch@de.ibm.com>");
45 MODULE_DESCRIPTION("IBM eServer HEA Driver");
46 MODULE_VERSION(DRV_VERSION);
47
48
49 static int msg_level = -1;
50 static int rq1_entries = EHEA_DEF_ENTRIES_RQ1;
51 static int rq2_entries = EHEA_DEF_ENTRIES_RQ2;
52 static int rq3_entries = EHEA_DEF_ENTRIES_RQ3;
53 static int sq_entries = EHEA_DEF_ENTRIES_SQ;
54
55 module_param(msg_level, int, 0);
56 module_param(rq1_entries, int, 0);
57 module_param(rq2_entries, int, 0);
58 module_param(rq3_entries, int, 0);
59 module_param(sq_entries, int, 0);
60
61 MODULE_PARM_DESC(msg_level, "msg_level");
62 MODULE_PARM_DESC(rq3_entries, "Number of entries for Receive Queue 3 "
63 "[2^x - 1], x = [6..14]. Default = "
64 __MODULE_STRING(EHEA_DEF_ENTRIES_RQ3) ")");
65 MODULE_PARM_DESC(rq2_entries, "Number of entries for Receive Queue 2 "
66 "[2^x - 1], x = [6..14]. Default = "
67 __MODULE_STRING(EHEA_DEF_ENTRIES_RQ2) ")");
68 MODULE_PARM_DESC(rq1_entries, "Number of entries for Receive Queue 1 "
69 "[2^x - 1], x = [6..14]. Default = "
70 __MODULE_STRING(EHEA_DEF_ENTRIES_RQ1) ")");
71 MODULE_PARM_DESC(sq_entries, " Number of entries for the Send Queue "
72 "[2^x - 1], x = [6..14]. Default = "
73 __MODULE_STRING(EHEA_DEF_ENTRIES_SQ) ")");
74
75 void ehea_dump(void *adr, int len, char *msg) {
76 int x;
77 unsigned char *deb = adr;
78 for (x = 0; x < len; x += 16) {
79 printk(DRV_NAME " %s adr=%p ofs=%04x %016lx %016lx\n", msg,
80 deb, x, *((u64*)&deb[0]), *((u64*)&deb[8]));
81 deb += 16;
82 }
83 }
84
85 static struct net_device_stats *ehea_get_stats(struct net_device *dev)
86 {
87 struct ehea_port *port = netdev_priv(dev);
88 struct net_device_stats *stats = &port->stats;
89 struct hcp_ehea_port_cb2 *cb2;
90 u64 hret, rx_packets;
91 int i;
92
93 memset(stats, 0, sizeof(*stats));
94
95 cb2 = kzalloc(PAGE_SIZE, GFP_KERNEL);
96 if (!cb2) {
97 ehea_error("no mem for cb2");
98 goto out;
99 }
100
101 hret = ehea_h_query_ehea_port(port->adapter->handle,
102 port->logical_port_id,
103 H_PORT_CB2, H_PORT_CB2_ALL, cb2);
104 if (hret != H_SUCCESS) {
105 ehea_error("query_ehea_port failed");
106 goto out_herr;
107 }
108
109 if (netif_msg_hw(port))
110 ehea_dump(cb2, sizeof(*cb2), "net_device_stats");
111
112 rx_packets = 0;
113 for (i = 0; i < port->num_def_qps; i++)
114 rx_packets += port->port_res[i].rx_packets;
115
116 stats->tx_packets = cb2->txucp + cb2->txmcp + cb2->txbcp;
117 stats->multicast = cb2->rxmcp;
118 stats->rx_errors = cb2->rxuerr;
119 stats->rx_bytes = cb2->rxo;
120 stats->tx_bytes = cb2->txo;
121 stats->rx_packets = rx_packets;
122
123 out_herr:
124 kfree(cb2);
125 out:
126 return stats;
127 }
128
129 static void ehea_refill_rq1(struct ehea_port_res *pr, int index, int nr_of_wqes)
130 {
131 struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
132 struct net_device *dev = pr->port->netdev;
133 int max_index_mask = pr->rq1_skba.len - 1;
134 int i;
135
136 if (!nr_of_wqes)
137 return;
138
139 for (i = 0; i < nr_of_wqes; i++) {
140 if (!skb_arr_rq1[index]) {
141 skb_arr_rq1[index] = netdev_alloc_skb(dev,
142 EHEA_L_PKT_SIZE);
143 if (!skb_arr_rq1[index]) {
144 ehea_error("%s: no mem for skb/%d wqes filled",
145 dev->name, i);
146 break;
147 }
148 }
149 index--;
150 index &= max_index_mask;
151 }
152 /* Ring doorbell */
153 ehea_update_rq1a(pr->qp, i);
154 }
155
156 static int ehea_init_fill_rq1(struct ehea_port_res *pr, int nr_rq1a)
157 {
158 int ret = 0;
159 struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
160 struct net_device *dev = pr->port->netdev;
161 int i;
162
163 for (i = 0; i < pr->rq1_skba.len; i++) {
164 skb_arr_rq1[i] = netdev_alloc_skb(dev, EHEA_L_PKT_SIZE);
165 if (!skb_arr_rq1[i]) {
166 ehea_error("%s: no mem for skb/%d wqes filled",
167 dev->name, i);
168 ret = -ENOMEM;
169 goto out;
170 }
171 }
172 /* Ring doorbell */
173 ehea_update_rq1a(pr->qp, nr_rq1a);
174 out:
175 return ret;
176 }
177
178 static int ehea_refill_rq_def(struct ehea_port_res *pr,
179 struct ehea_q_skb_arr *q_skba, int rq_nr,
180 int num_wqes, int wqe_type, int packet_size)
181 {
182 struct net_device *dev = pr->port->netdev;
183 struct ehea_qp *qp = pr->qp;
184 struct sk_buff **skb_arr = q_skba->arr;
185 struct ehea_rwqe *rwqe;
186 int i, index, max_index_mask, fill_wqes;
187 int ret = 0;
188
189 fill_wqes = q_skba->os_skbs + num_wqes;
190
191 if (!fill_wqes)
192 return ret;
193
194 index = q_skba->index;
195 max_index_mask = q_skba->len - 1;
196 for (i = 0; i < fill_wqes; i++) {
197 struct sk_buff *skb = netdev_alloc_skb(dev, packet_size);
198 if (!skb) {
199 ehea_error("%s: no mem for skb/%d wqes filled",
200 dev->name, i);
201 q_skba->os_skbs = fill_wqes - i;
202 ret = -ENOMEM;
203 break;
204 }
205 skb_reserve(skb, NET_IP_ALIGN);
206
207 skb_arr[index] = skb;
208
209 rwqe = ehea_get_next_rwqe(qp, rq_nr);
210 rwqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, wqe_type)
211 | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, index);
212 rwqe->sg_list[0].l_key = pr->recv_mr.lkey;
213 rwqe->sg_list[0].vaddr = (u64)skb->data;
214 rwqe->sg_list[0].len = packet_size;
215 rwqe->data_segments = 1;
216
217 index++;
218 index &= max_index_mask;
219 }
220 q_skba->index = index;
221
222 /* Ring doorbell */
223 iosync();
224 if (rq_nr == 2)
225 ehea_update_rq2a(pr->qp, i);
226 else
227 ehea_update_rq3a(pr->qp, i);
228
229 return ret;
230 }
231
232
233 static int ehea_refill_rq2(struct ehea_port_res *pr, int nr_of_wqes)
234 {
235 return ehea_refill_rq_def(pr, &pr->rq2_skba, 2,
236 nr_of_wqes, EHEA_RWQE2_TYPE,
237 EHEA_RQ2_PKT_SIZE + NET_IP_ALIGN);
238 }
239
240
241 static int ehea_refill_rq3(struct ehea_port_res *pr, int nr_of_wqes)
242 {
243 return ehea_refill_rq_def(pr, &pr->rq3_skba, 3,
244 nr_of_wqes, EHEA_RWQE3_TYPE,
245 EHEA_MAX_PACKET_SIZE + NET_IP_ALIGN);
246 }
247
248 static inline int ehea_check_cqe(struct ehea_cqe *cqe, int *rq_num)
249 {
250 *rq_num = (cqe->type & EHEA_CQE_TYPE_RQ) >> 5;
251 if ((cqe->status & EHEA_CQE_STAT_ERR_MASK) == 0)
252 return 0;
253 if (((cqe->status & EHEA_CQE_STAT_ERR_TCP) != 0) &&
254 (cqe->header_length == 0))
255 return 0;
256 return -EINVAL;
257 }
258
259 static inline void ehea_fill_skb(struct net_device *dev,
260 struct sk_buff *skb, struct ehea_cqe *cqe)
261 {
262 int length = cqe->num_bytes_transfered - 4; /*remove CRC */
263
264 skb_put(skb, length);
265 skb->ip_summed = CHECKSUM_UNNECESSARY;
266 skb->protocol = eth_type_trans(skb, dev);
267 }
268
269 static inline struct sk_buff *get_skb_by_index(struct sk_buff **skb_array,
270 int arr_len,
271 struct ehea_cqe *cqe)
272 {
273 int skb_index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, cqe->wr_id);
274 struct sk_buff *skb;
275 void *pref;
276 int x;
277
278 x = skb_index + 1;
279 x &= (arr_len - 1);
280
281 pref = skb_array[x];
282 prefetchw(pref);
283 prefetchw(pref + EHEA_CACHE_LINE);
284
285 pref = (skb_array[x]->data);
286 prefetch(pref);
287 prefetch(pref + EHEA_CACHE_LINE);
288 prefetch(pref + EHEA_CACHE_LINE * 2);
289 prefetch(pref + EHEA_CACHE_LINE * 3);
290 skb = skb_array[skb_index];
291 skb_array[skb_index] = NULL;
292 return skb;
293 }
294
295 static inline struct sk_buff *get_skb_by_index_ll(struct sk_buff **skb_array,
296 int arr_len, int wqe_index)
297 {
298 struct sk_buff *skb;
299 void *pref;
300 int x;
301
302 x = wqe_index + 1;
303 x &= (arr_len - 1);
304
305 pref = skb_array[x];
306 prefetchw(pref);
307 prefetchw(pref + EHEA_CACHE_LINE);
308
309 pref = (skb_array[x]->data);
310 prefetchw(pref);
311 prefetchw(pref + EHEA_CACHE_LINE);
312
313 skb = skb_array[wqe_index];
314 skb_array[wqe_index] = NULL;
315 return skb;
316 }
317
318 static int ehea_treat_poll_error(struct ehea_port_res *pr, int rq,
319 struct ehea_cqe *cqe, int *processed_rq2,
320 int *processed_rq3)
321 {
322 struct sk_buff *skb;
323
324 if (netif_msg_rx_err(pr->port)) {
325 ehea_error("CQE Error for QP %d", pr->qp->init_attr.qp_nr);
326 ehea_dump(cqe, sizeof(*cqe), "CQE");
327 }
328
329 if (rq == 2) {
330 *processed_rq2 += 1;
331 skb = get_skb_by_index(pr->rq2_skba.arr, pr->rq2_skba.len, cqe);
332 dev_kfree_skb(skb);
333 } else if (rq == 3) {
334 *processed_rq3 += 1;
335 skb = get_skb_by_index(pr->rq3_skba.arr, pr->rq3_skba.len, cqe);
336 dev_kfree_skb(skb);
337 }
338
339 if (cqe->status & EHEA_CQE_STAT_FAT_ERR_MASK) {
340 ehea_error("Critical receive error. Resetting port.");
341 queue_work(pr->port->adapter->ehea_wq, &pr->port->reset_task);
342 return 1;
343 }
344
345 return 0;
346 }
347
348 static int ehea_poll(struct net_device *dev, int *budget)
349 {
350 struct ehea_port *port = netdev_priv(dev);
351 struct ehea_port_res *pr = &port->port_res[0];
352 struct ehea_qp *qp = pr->qp;
353 struct ehea_cqe *cqe;
354 struct sk_buff *skb;
355 struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
356 struct sk_buff **skb_arr_rq2 = pr->rq2_skba.arr;
357 struct sk_buff **skb_arr_rq3 = pr->rq3_skba.arr;
358 int skb_arr_rq1_len = pr->rq1_skba.len;
359 int skb_arr_rq2_len = pr->rq2_skba.len;
360 int skb_arr_rq3_len = pr->rq3_skba.len;
361 int processed, processed_rq1, processed_rq2, processed_rq3;
362 int wqe_index, last_wqe_index, rq, intreq, my_quota, port_reset;
363
364 processed = processed_rq1 = processed_rq2 = processed_rq3 = 0;
365 last_wqe_index = 0;
366 my_quota = min(*budget, dev->quota);
367 my_quota = min(my_quota, EHEA_POLL_MAX_RWQE);
368
369 /* rq0 is low latency RQ */
370 cqe = ehea_poll_rq1(qp, &wqe_index);
371 while ((my_quota > 0) && cqe) {
372 ehea_inc_rq1(qp);
373 processed_rq1++;
374 processed++;
375 my_quota--;
376 if (netif_msg_rx_status(port))
377 ehea_dump(cqe, sizeof(*cqe), "CQE");
378
379 last_wqe_index = wqe_index;
380 rmb();
381 if (!ehea_check_cqe(cqe, &rq)) {
382 if (rq == 1) { /* LL RQ1 */
383 skb = get_skb_by_index_ll(skb_arr_rq1,
384 skb_arr_rq1_len,
385 wqe_index);
386 if (unlikely(!skb)) {
387 if (netif_msg_rx_err(port))
388 ehea_error("LL rq1: skb=NULL");
389 skb = netdev_alloc_skb(dev,
390 EHEA_L_PKT_SIZE);
391 if (!skb)
392 break;
393 }
394 memcpy(skb->data, ((char*)cqe) + 64,
395 cqe->num_bytes_transfered - 4);
396 ehea_fill_skb(dev, skb, cqe);
397 } else if (rq == 2) { /* RQ2 */
398 skb = get_skb_by_index(skb_arr_rq2,
399 skb_arr_rq2_len, cqe);
400 if (unlikely(!skb)) {
401 if (netif_msg_rx_err(port))
402 ehea_error("rq2: skb=NULL");
403 break;
404 }
405 ehea_fill_skb(dev, skb, cqe);
406 processed_rq2++;
407 } else { /* RQ3 */
408 skb = get_skb_by_index(skb_arr_rq3,
409 skb_arr_rq3_len, cqe);
410 if (unlikely(!skb)) {
411 if (netif_msg_rx_err(port))
412 ehea_error("rq3: skb=NULL");
413 break;
414 }
415 ehea_fill_skb(dev, skb, cqe);
416 processed_rq3++;
417 }
418
419 if (cqe->status & EHEA_CQE_VLAN_TAG_XTRACT)
420 vlan_hwaccel_receive_skb(skb, port->vgrp,
421 cqe->vlan_tag);
422 else
423 netif_receive_skb(skb);
424
425 } else { /* Error occured */
426 pr->p_state.poll_receive_errors++;
427 port_reset = ehea_treat_poll_error(pr, rq, cqe,
428 &processed_rq2,
429 &processed_rq3);
430 if (port_reset)
431 break;
432 }
433 cqe = ehea_poll_rq1(qp, &wqe_index);
434 }
435
436 dev->quota -= processed;
437 *budget -= processed;
438
439 pr->p_state.ehea_poll += 1;
440 pr->rx_packets += processed;
441
442 ehea_refill_rq1(pr, last_wqe_index, processed_rq1);
443 ehea_refill_rq2(pr, processed_rq2);
444 ehea_refill_rq3(pr, processed_rq3);
445
446 intreq = ((pr->p_state.ehea_poll & 0xF) == 0xF);
447
448 if (!cqe || intreq) {
449 netif_rx_complete(dev);
450 ehea_reset_cq_ep(pr->recv_cq);
451 ehea_reset_cq_n1(pr->recv_cq);
452 cqe = hw_qeit_get_valid(&qp->hw_rqueue1);
453 if (!cqe || intreq)
454 return 0;
455 if (!netif_rx_reschedule(dev, my_quota))
456 return 0;
457 }
458 return 1;
459 }
460
461 void free_sent_skbs(struct ehea_cqe *cqe, struct ehea_port_res *pr)
462 {
463 struct sk_buff *skb;
464 int index, max_index_mask, i;
465
466 index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, cqe->wr_id);
467 max_index_mask = pr->sq_skba.len - 1;
468 for (i = 0; i < EHEA_BMASK_GET(EHEA_WR_ID_REFILL, cqe->wr_id); i++) {
469 skb = pr->sq_skba.arr[index];
470 if (likely(skb)) {
471 dev_kfree_skb(skb);
472 pr->sq_skba.arr[index] = NULL;
473 } else {
474 ehea_error("skb=NULL, wr_id=%lX, loop=%d, index=%d",
475 cqe->wr_id, i, index);
476 }
477 index--;
478 index &= max_index_mask;
479 }
480 }
481
482 #define MAX_SENDCOMP_QUOTA 400
483 void ehea_send_irq_tasklet(unsigned long data)
484 {
485 struct ehea_port_res *pr = (struct ehea_port_res*)data;
486 struct ehea_cq *send_cq = pr->send_cq;
487 struct ehea_cqe *cqe;
488 int quota = MAX_SENDCOMP_QUOTA;
489 int cqe_counter = 0;
490 int swqe_av = 0;
491 unsigned long flags;
492
493 do {
494 cqe = ehea_poll_cq(send_cq);
495 if (!cqe) {
496 ehea_reset_cq_ep(send_cq);
497 ehea_reset_cq_n1(send_cq);
498 cqe = ehea_poll_cq(send_cq);
499 if (!cqe)
500 break;
501 }
502 cqe_counter++;
503 rmb();
504 if (cqe->status & EHEA_CQE_STAT_ERR_MASK) {
505 ehea_error("Send Completion Error: Resetting port");
506 if (netif_msg_tx_err(pr->port))
507 ehea_dump(cqe, sizeof(*cqe), "Send CQE");
508 queue_work(pr->port->adapter->ehea_wq,
509 &pr->port->reset_task);
510 break;
511 }
512
513 if (netif_msg_tx_done(pr->port))
514 ehea_dump(cqe, sizeof(*cqe), "CQE");
515
516 if (likely(EHEA_BMASK_GET(EHEA_WR_ID_TYPE, cqe->wr_id)
517 == EHEA_SWQE2_TYPE))
518 free_sent_skbs(cqe, pr);
519
520 swqe_av += EHEA_BMASK_GET(EHEA_WR_ID_REFILL, cqe->wr_id);
521 quota--;
522 } while (quota > 0);
523
524 ehea_update_feca(send_cq, cqe_counter);
525 atomic_add(swqe_av, &pr->swqe_avail);
526
527 spin_lock_irqsave(&pr->netif_queue, flags);
528 if (pr->queue_stopped && (atomic_read(&pr->swqe_avail)
529 >= pr->swqe_refill_th)) {
530 netif_wake_queue(pr->port->netdev);
531 pr->queue_stopped = 0;
532 }
533 spin_unlock_irqrestore(&pr->netif_queue, flags);
534
535 if (unlikely(cqe))
536 tasklet_hi_schedule(&pr->send_comp_task);
537 }
538
539 static irqreturn_t ehea_send_irq_handler(int irq, void *param)
540 {
541 struct ehea_port_res *pr = param;
542 tasklet_hi_schedule(&pr->send_comp_task);
543 return IRQ_HANDLED;
544 }
545
546 static irqreturn_t ehea_recv_irq_handler(int irq, void *param)
547 {
548 struct ehea_port_res *pr = param;
549 struct ehea_port *port = pr->port;
550 netif_rx_schedule(port->netdev);
551 return IRQ_HANDLED;
552 }
553
554 static irqreturn_t ehea_qp_aff_irq_handler(int irq, void *param)
555 {
556 struct ehea_port *port = param;
557 struct ehea_eqe *eqe;
558 struct ehea_qp *qp;
559 u32 qp_token;
560
561 eqe = ehea_poll_eq(port->qp_eq);
562
563 while (eqe) {
564 qp_token = EHEA_BMASK_GET(EHEA_EQE_QP_TOKEN, eqe->entry);
565 ehea_error("QP aff_err: entry=0x%lx, token=0x%x",
566 eqe->entry, qp_token);
567
568 qp = port->port_res[qp_token].qp;
569 ehea_error_data(port->adapter, qp->fw_handle);
570 eqe = ehea_poll_eq(port->qp_eq);
571 }
572
573 queue_work(port->adapter->ehea_wq, &port->reset_task);
574
575 return IRQ_HANDLED;
576 }
577
578 static struct ehea_port *ehea_get_port(struct ehea_adapter *adapter,
579 int logical_port)
580 {
581 int i;
582
583 for (i = 0; i < adapter->num_ports; i++)
584 if (adapter->port[i])
585 if (adapter->port[i]->logical_port_id == logical_port)
586 return adapter->port[i];
587 return NULL;
588 }
589
590 int ehea_sense_port_attr(struct ehea_port *port)
591 {
592 int ret;
593 u64 hret;
594 struct hcp_ehea_port_cb0 *cb0;
595
596 cb0 = kzalloc(PAGE_SIZE, GFP_ATOMIC); /* May be called via */
597 if (!cb0) { /* ehea_neq_tasklet() */
598 ehea_error("no mem for cb0");
599 ret = -ENOMEM;
600 goto out;
601 }
602
603 hret = ehea_h_query_ehea_port(port->adapter->handle,
604 port->logical_port_id, H_PORT_CB0,
605 EHEA_BMASK_SET(H_PORT_CB0_ALL, 0xFFFF),
606 cb0);
607 if (hret != H_SUCCESS) {
608 ret = -EIO;
609 goto out_free;
610 }
611
612 /* MAC address */
613 port->mac_addr = cb0->port_mac_addr << 16;
614
615 if (!is_valid_ether_addr((u8*)&port->mac_addr)) {
616 ret = -EADDRNOTAVAIL;
617 goto out_free;
618 }
619
620 /* Port speed */
621 switch (cb0->port_speed) {
622 case H_SPEED_10M_H:
623 port->port_speed = EHEA_SPEED_10M;
624 port->full_duplex = 0;
625 break;
626 case H_SPEED_10M_F:
627 port->port_speed = EHEA_SPEED_10M;
628 port->full_duplex = 1;
629 break;
630 case H_SPEED_100M_H:
631 port->port_speed = EHEA_SPEED_100M;
632 port->full_duplex = 0;
633 break;
634 case H_SPEED_100M_F:
635 port->port_speed = EHEA_SPEED_100M;
636 port->full_duplex = 1;
637 break;
638 case H_SPEED_1G_F:
639 port->port_speed = EHEA_SPEED_1G;
640 port->full_duplex = 1;
641 break;
642 case H_SPEED_10G_F:
643 port->port_speed = EHEA_SPEED_10G;
644 port->full_duplex = 1;
645 break;
646 default:
647 port->port_speed = 0;
648 port->full_duplex = 0;
649 break;
650 }
651
652 port->autoneg = 1;
653
654 /* Number of default QPs */
655 port->num_def_qps = cb0->num_default_qps;
656
657 if (!port->num_def_qps) {
658 ret = -EINVAL;
659 goto out_free;
660 }
661
662 if (port->num_def_qps >= EHEA_NUM_TX_QP)
663 port->num_add_tx_qps = 0;
664 else
665 port->num_add_tx_qps = EHEA_NUM_TX_QP - port->num_def_qps;
666
667 ret = 0;
668 out_free:
669 if (ret || netif_msg_probe(port))
670 ehea_dump(cb0, sizeof(*cb0), "ehea_sense_port_attr");
671 kfree(cb0);
672 out:
673 return ret;
674 }
675
676 int ehea_set_portspeed(struct ehea_port *port, u32 port_speed)
677 {
678 struct hcp_ehea_port_cb4 *cb4;
679 u64 hret;
680 int ret = 0;
681
682 cb4 = kzalloc(PAGE_SIZE, GFP_KERNEL);
683 if (!cb4) {
684 ehea_error("no mem for cb4");
685 ret = -ENOMEM;
686 goto out;
687 }
688
689 cb4->port_speed = port_speed;
690
691 netif_carrier_off(port->netdev);
692
693 hret = ehea_h_modify_ehea_port(port->adapter->handle,
694 port->logical_port_id,
695 H_PORT_CB4, H_PORT_CB4_SPEED, cb4);
696 if (hret == H_SUCCESS) {
697 port->autoneg = port_speed == EHEA_SPEED_AUTONEG ? 1 : 0;
698
699 hret = ehea_h_query_ehea_port(port->adapter->handle,
700 port->logical_port_id,
701 H_PORT_CB4, H_PORT_CB4_SPEED,
702 cb4);
703 if (hret == H_SUCCESS) {
704 switch (cb4->port_speed) {
705 case H_SPEED_10M_H:
706 port->port_speed = EHEA_SPEED_10M;
707 port->full_duplex = 0;
708 break;
709 case H_SPEED_10M_F:
710 port->port_speed = EHEA_SPEED_10M;
711 port->full_duplex = 1;
712 break;
713 case H_SPEED_100M_H:
714 port->port_speed = EHEA_SPEED_100M;
715 port->full_duplex = 0;
716 break;
717 case H_SPEED_100M_F:
718 port->port_speed = EHEA_SPEED_100M;
719 port->full_duplex = 1;
720 break;
721 case H_SPEED_1G_F:
722 port->port_speed = EHEA_SPEED_1G;
723 port->full_duplex = 1;
724 break;
725 case H_SPEED_10G_F:
726 port->port_speed = EHEA_SPEED_10G;
727 port->full_duplex = 1;
728 break;
729 default:
730 port->port_speed = 0;
731 port->full_duplex = 0;
732 break;
733 }
734 } else {
735 ehea_error("Failed sensing port speed");
736 ret = -EIO;
737 }
738 } else {
739 if (hret == H_AUTHORITY) {
740 ehea_info("Hypervisor denied setting port speed");
741 ret = -EPERM;
742 } else {
743 ret = -EIO;
744 ehea_error("Failed setting port speed");
745 }
746 }
747 netif_carrier_on(port->netdev);
748 kfree(cb4);
749 out:
750 return ret;
751 }
752
753 static void ehea_parse_eqe(struct ehea_adapter *adapter, u64 eqe)
754 {
755 int ret;
756 u8 ec;
757 u8 portnum;
758 struct ehea_port *port;
759
760 ec = EHEA_BMASK_GET(NEQE_EVENT_CODE, eqe);
761 portnum = EHEA_BMASK_GET(NEQE_PORTNUM, eqe);
762 port = ehea_get_port(adapter, portnum);
763
764 switch (ec) {
765 case EHEA_EC_PORTSTATE_CHG: /* port state change */
766
767 if (!port) {
768 ehea_error("unknown portnum %x", portnum);
769 break;
770 }
771
772 if (EHEA_BMASK_GET(NEQE_PORT_UP, eqe)) {
773 if (!netif_carrier_ok(port->netdev)) {
774 ret = ehea_sense_port_attr(port);
775 if (ret) {
776 ehea_error("failed resensing port "
777 "attributes");
778 break;
779 }
780
781 if (netif_msg_link(port))
782 ehea_info("%s: Logical port up: %dMbps "
783 "%s Duplex",
784 port->netdev->name,
785 port->port_speed,
786 port->full_duplex ==
787 1 ? "Full" : "Half");
788
789 netif_carrier_on(port->netdev);
790 netif_wake_queue(port->netdev);
791 }
792 } else
793 if (netif_carrier_ok(port->netdev)) {
794 if (netif_msg_link(port))
795 ehea_info("%s: Logical port down",
796 port->netdev->name);
797 netif_carrier_off(port->netdev);
798 netif_stop_queue(port->netdev);
799 }
800
801 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PORT_UP, eqe)) {
802 if (netif_msg_link(port))
803 ehea_info("%s: Physical port up",
804 port->netdev->name);
805 } else {
806 if (netif_msg_link(port))
807 ehea_info("%s: Physical port down",
808 port->netdev->name);
809 }
810
811 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PRIMARY, eqe))
812 ehea_info("External switch port is primary port");
813 else
814 ehea_info("External switch port is backup port");
815
816 break;
817 case EHEA_EC_ADAPTER_MALFUNC:
818 ehea_error("Adapter malfunction");
819 break;
820 case EHEA_EC_PORT_MALFUNC:
821 ehea_info("Port malfunction: Device: %s", port->netdev->name);
822 netif_carrier_off(port->netdev);
823 netif_stop_queue(port->netdev);
824 break;
825 default:
826 ehea_error("unknown event code %x, eqe=0x%lX", ec, eqe);
827 break;
828 }
829 }
830
831 static void ehea_neq_tasklet(unsigned long data)
832 {
833 struct ehea_adapter *adapter = (struct ehea_adapter*)data;
834 struct ehea_eqe *eqe;
835 u64 event_mask;
836
837 eqe = ehea_poll_eq(adapter->neq);
838 ehea_debug("eqe=%p", eqe);
839
840 while (eqe) {
841 ehea_debug("*eqe=%lx", eqe->entry);
842 ehea_parse_eqe(adapter, eqe->entry);
843 eqe = ehea_poll_eq(adapter->neq);
844 ehea_debug("next eqe=%p", eqe);
845 }
846
847 event_mask = EHEA_BMASK_SET(NELR_PORTSTATE_CHG, 1)
848 | EHEA_BMASK_SET(NELR_ADAPTER_MALFUNC, 1)
849 | EHEA_BMASK_SET(NELR_PORT_MALFUNC, 1);
850
851 ehea_h_reset_events(adapter->handle,
852 adapter->neq->fw_handle, event_mask);
853 }
854
855 static irqreturn_t ehea_interrupt_neq(int irq, void *param)
856 {
857 struct ehea_adapter *adapter = param;
858 tasklet_hi_schedule(&adapter->neq_tasklet);
859 return IRQ_HANDLED;
860 }
861
862
863 static int ehea_fill_port_res(struct ehea_port_res *pr)
864 {
865 int ret;
866 struct ehea_qp_init_attr *init_attr = &pr->qp->init_attr;
867
868 ret = ehea_init_fill_rq1(pr, init_attr->act_nr_rwqes_rq1
869 - init_attr->act_nr_rwqes_rq2
870 - init_attr->act_nr_rwqes_rq3 - 1);
871
872 ret |= ehea_refill_rq2(pr, init_attr->act_nr_rwqes_rq2 - 1);
873
874 ret |= ehea_refill_rq3(pr, init_attr->act_nr_rwqes_rq3 - 1);
875
876 return ret;
877 }
878
879 static int ehea_reg_interrupts(struct net_device *dev)
880 {
881 struct ehea_port *port = netdev_priv(dev);
882 struct ehea_port_res *pr;
883 int i, ret;
884
885 for (i = 0; i < port->num_def_qps; i++) {
886 pr = &port->port_res[i];
887 snprintf(pr->int_recv_name, EHEA_IRQ_NAME_SIZE - 1
888 , "%s-recv%d", dev->name, i);
889 ret = ibmebus_request_irq(NULL, pr->recv_eq->attr.ist1,
890 ehea_recv_irq_handler,
891 IRQF_DISABLED, pr->int_recv_name, pr);
892 if (ret) {
893 ehea_error("failed registering irq for ehea_recv_int:"
894 "port_res_nr:%d, ist=%X", i,
895 pr->recv_eq->attr.ist1);
896 goto out_free_seq;
897 }
898 if (netif_msg_ifup(port))
899 ehea_info("irq_handle 0x%X for funct ehea_recv_int %d "
900 "registered", pr->recv_eq->attr.ist1, i);
901 }
902
903 snprintf(port->int_aff_name, EHEA_IRQ_NAME_SIZE - 1, "%s-aff",
904 dev->name);
905
906 ret = ibmebus_request_irq(NULL, port->qp_eq->attr.ist1,
907 ehea_qp_aff_irq_handler,
908 IRQF_DISABLED, port->int_aff_name, port);
909 if (ret) {
910 ehea_error("failed registering irq for qp_aff_irq_handler:"
911 "ist=%X", port->qp_eq->attr.ist1);
912 goto out_free_qpeq;
913 }
914
915 if (netif_msg_ifup(port))
916 ehea_info("irq_handle 0x%X for function qp_aff_irq_handler "
917 "registered", port->qp_eq->attr.ist1);
918
919 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
920 pr = &port->port_res[i];
921 snprintf(pr->int_send_name, EHEA_IRQ_NAME_SIZE - 1,
922 "%s-send%d", dev->name, i);
923 ret = ibmebus_request_irq(NULL, pr->send_eq->attr.ist1,
924 ehea_send_irq_handler,
925 IRQF_DISABLED, pr->int_send_name,
926 pr);
927 if (ret) {
928 ehea_error("failed registering irq for ehea_send "
929 "port_res_nr:%d, ist=%X", i,
930 pr->send_eq->attr.ist1);
931 goto out_free_req;
932 }
933 if (netif_msg_ifup(port))
934 ehea_info("irq_handle 0x%X for function ehea_send_int "
935 "%d registered", pr->send_eq->attr.ist1, i);
936 }
937 out:
938 return ret;
939
940 out_free_req:
941 while (--i >= 0) {
942 u32 ist = port->port_res[i].send_eq->attr.ist1;
943 ibmebus_free_irq(NULL, ist, &port->port_res[i]);
944 }
945 out_free_qpeq:
946 ibmebus_free_irq(NULL, port->qp_eq->attr.ist1, port);
947 i = port->num_def_qps;
948 out_free_seq:
949 while (--i >= 0) {
950 u32 ist = port->port_res[i].recv_eq->attr.ist1;
951 ibmebus_free_irq(NULL, ist, &port->port_res[i]);
952 }
953 goto out;
954 }
955
956 static void ehea_free_interrupts(struct net_device *dev)
957 {
958 struct ehea_port *port = netdev_priv(dev);
959 struct ehea_port_res *pr;
960 int i;
961
962 /* send */
963 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
964 pr = &port->port_res[i];
965 ibmebus_free_irq(NULL, pr->send_eq->attr.ist1, pr);
966 if (netif_msg_intr(port))
967 ehea_info("free send irq for res %d with handle 0x%X",
968 i, pr->send_eq->attr.ist1);
969 }
970
971 /* receive */
972 for (i = 0; i < port->num_def_qps; i++) {
973 pr = &port->port_res[i];
974 ibmebus_free_irq(NULL, pr->recv_eq->attr.ist1, pr);
975 if (netif_msg_intr(port))
976 ehea_info("free recv irq for res %d with handle 0x%X",
977 i, pr->recv_eq->attr.ist1);
978 }
979
980 /* associated events */
981 ibmebus_free_irq(NULL, port->qp_eq->attr.ist1, port);
982 if (netif_msg_intr(port))
983 ehea_info("associated event interrupt for handle 0x%X freed",
984 port->qp_eq->attr.ist1);
985 }
986
987 static int ehea_configure_port(struct ehea_port *port)
988 {
989 int ret, i;
990 u64 hret, mask;
991 struct hcp_ehea_port_cb0 *cb0;
992
993 ret = -ENOMEM;
994 cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL);
995 if (!cb0)
996 goto out;
997
998 cb0->port_rc = EHEA_BMASK_SET(PXLY_RC_VALID, 1)
999 | EHEA_BMASK_SET(PXLY_RC_IP_CHKSUM, 1)
1000 | EHEA_BMASK_SET(PXLY_RC_TCP_UDP_CHKSUM, 1)
1001 | EHEA_BMASK_SET(PXLY_RC_VLAN_XTRACT, 1)
1002 | EHEA_BMASK_SET(PXLY_RC_VLAN_TAG_FILTER,
1003 PXLY_RC_VLAN_FILTER)
1004 | EHEA_BMASK_SET(PXLY_RC_JUMBO_FRAME, 1);
1005
1006 for (i = 0; i < port->num_def_qps; i++)
1007 cb0->default_qpn_arr[i] = port->port_res[0].qp->init_attr.qp_nr;
1008
1009 if (netif_msg_ifup(port))
1010 ehea_dump(cb0, sizeof(*cb0), "ehea_configure_port");
1011
1012 mask = EHEA_BMASK_SET(H_PORT_CB0_PRC, 1)
1013 | EHEA_BMASK_SET(H_PORT_CB0_DEFQPNARRAY, 1);
1014
1015 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1016 port->logical_port_id,
1017 H_PORT_CB0, mask, cb0);
1018 ret = -EIO;
1019 if (hret != H_SUCCESS)
1020 goto out_free;
1021
1022 ret = 0;
1023
1024 out_free:
1025 kfree(cb0);
1026 out:
1027 return ret;
1028 }
1029
1030 static int ehea_gen_smrs(struct ehea_port_res *pr)
1031 {
1032 u64 hret;
1033 struct ehea_adapter *adapter = pr->port->adapter;
1034
1035 hret = ehea_h_register_smr(adapter->handle, adapter->mr.handle,
1036 adapter->mr.vaddr, EHEA_MR_ACC_CTRL,
1037 adapter->pd, &pr->send_mr);
1038 if (hret != H_SUCCESS)
1039 goto out;
1040
1041 hret = ehea_h_register_smr(adapter->handle, adapter->mr.handle,
1042 adapter->mr.vaddr, EHEA_MR_ACC_CTRL,
1043 adapter->pd, &pr->recv_mr);
1044 if (hret != H_SUCCESS)
1045 goto out_freeres;
1046
1047 return 0;
1048
1049 out_freeres:
1050 hret = ehea_h_free_resource(adapter->handle, pr->send_mr.handle);
1051 if (hret != H_SUCCESS)
1052 ehea_error("failed freeing SMR");
1053 out:
1054 return -EIO;
1055 }
1056
1057 static int ehea_rem_smrs(struct ehea_port_res *pr)
1058 {
1059 struct ehea_adapter *adapter = pr->port->adapter;
1060 int ret = 0;
1061 u64 hret;
1062
1063 hret = ehea_h_free_resource(adapter->handle, pr->send_mr.handle);
1064 if (hret != H_SUCCESS) {
1065 ret = -EIO;
1066 ehea_error("failed freeing send SMR for pr=%p", pr);
1067 }
1068
1069 hret = ehea_h_free_resource(adapter->handle, pr->recv_mr.handle);
1070 if (hret != H_SUCCESS) {
1071 ret = -EIO;
1072 ehea_error("failed freeing recv SMR for pr=%p", pr);
1073 }
1074
1075 return ret;
1076 }
1077
1078 static int ehea_init_q_skba(struct ehea_q_skb_arr *q_skba, int max_q_entries)
1079 {
1080 int arr_size = sizeof(void*) * max_q_entries;
1081
1082 q_skba->arr = vmalloc(arr_size);
1083 if (!q_skba->arr)
1084 return -ENOMEM;
1085
1086 memset(q_skba->arr, 0, arr_size);
1087
1088 q_skba->len = max_q_entries;
1089 q_skba->index = 0;
1090 q_skba->os_skbs = 0;
1091
1092 return 0;
1093 }
1094
1095 static int ehea_init_port_res(struct ehea_port *port, struct ehea_port_res *pr,
1096 struct port_res_cfg *pr_cfg, int queue_token)
1097 {
1098 struct ehea_adapter *adapter = port->adapter;
1099 enum ehea_eq_type eq_type = EHEA_EQ;
1100 struct ehea_qp_init_attr *init_attr = NULL;
1101 int ret = -EIO;
1102
1103 memset(pr, 0, sizeof(struct ehea_port_res));
1104
1105 pr->port = port;
1106 spin_lock_init(&pr->send_lock);
1107 spin_lock_init(&pr->recv_lock);
1108 spin_lock_init(&pr->xmit_lock);
1109 spin_lock_init(&pr->netif_queue);
1110
1111 pr->recv_eq = ehea_create_eq(adapter, eq_type, EHEA_MAX_ENTRIES_EQ, 0);
1112 if (!pr->recv_eq) {
1113 ehea_error("create_eq failed (recv_eq)");
1114 goto out_free;
1115 }
1116
1117 pr->send_eq = ehea_create_eq(adapter, eq_type, EHEA_MAX_ENTRIES_EQ, 0);
1118 if (!pr->send_eq) {
1119 ehea_error("create_eq failed (send_eq)");
1120 goto out_free;
1121 }
1122
1123 pr->recv_cq = ehea_create_cq(adapter, pr_cfg->max_entries_rcq,
1124 pr->recv_eq->fw_handle,
1125 port->logical_port_id);
1126 if (!pr->recv_cq) {
1127 ehea_error("create_cq failed (cq_recv)");
1128 goto out_free;
1129 }
1130
1131 pr->send_cq = ehea_create_cq(adapter, pr_cfg->max_entries_scq,
1132 pr->send_eq->fw_handle,
1133 port->logical_port_id);
1134 if (!pr->send_cq) {
1135 ehea_error("create_cq failed (cq_send)");
1136 goto out_free;
1137 }
1138
1139 if (netif_msg_ifup(port))
1140 ehea_info("Send CQ: act_nr_cqes=%d, Recv CQ: act_nr_cqes=%d",
1141 pr->send_cq->attr.act_nr_of_cqes,
1142 pr->recv_cq->attr.act_nr_of_cqes);
1143
1144 init_attr = kzalloc(sizeof(*init_attr), GFP_KERNEL);
1145 if (!init_attr) {
1146 ret = -ENOMEM;
1147 ehea_error("no mem for ehea_qp_init_attr");
1148 goto out_free;
1149 }
1150
1151 init_attr->low_lat_rq1 = 1;
1152 init_attr->signalingtype = 1; /* generate CQE if specified in WQE */
1153 init_attr->rq_count = 3;
1154 init_attr->qp_token = queue_token;
1155 init_attr->max_nr_send_wqes = pr_cfg->max_entries_sq;
1156 init_attr->max_nr_rwqes_rq1 = pr_cfg->max_entries_rq1;
1157 init_attr->max_nr_rwqes_rq2 = pr_cfg->max_entries_rq2;
1158 init_attr->max_nr_rwqes_rq3 = pr_cfg->max_entries_rq3;
1159 init_attr->wqe_size_enc_sq = EHEA_SG_SQ;
1160 init_attr->wqe_size_enc_rq1 = EHEA_SG_RQ1;
1161 init_attr->wqe_size_enc_rq2 = EHEA_SG_RQ2;
1162 init_attr->wqe_size_enc_rq3 = EHEA_SG_RQ3;
1163 init_attr->rq2_threshold = EHEA_RQ2_THRESHOLD;
1164 init_attr->rq3_threshold = EHEA_RQ3_THRESHOLD;
1165 init_attr->port_nr = port->logical_port_id;
1166 init_attr->send_cq_handle = pr->send_cq->fw_handle;
1167 init_attr->recv_cq_handle = pr->recv_cq->fw_handle;
1168 init_attr->aff_eq_handle = port->qp_eq->fw_handle;
1169
1170 pr->qp = ehea_create_qp(adapter, adapter->pd, init_attr);
1171 if (!pr->qp) {
1172 ehea_error("create_qp failed");
1173 ret = -EIO;
1174 goto out_free;
1175 }
1176
1177 if (netif_msg_ifup(port))
1178 ehea_info("QP: qp_nr=%d\n act_nr_snd_wqe=%d\n nr_rwqe_rq1=%d\n "
1179 "nr_rwqe_rq2=%d\n nr_rwqe_rq3=%d", init_attr->qp_nr,
1180 init_attr->act_nr_send_wqes,
1181 init_attr->act_nr_rwqes_rq1,
1182 init_attr->act_nr_rwqes_rq2,
1183 init_attr->act_nr_rwqes_rq3);
1184
1185 ret = ehea_init_q_skba(&pr->sq_skba, init_attr->act_nr_send_wqes + 1);
1186 ret |= ehea_init_q_skba(&pr->rq1_skba, init_attr->act_nr_rwqes_rq1 + 1);
1187 ret |= ehea_init_q_skba(&pr->rq2_skba, init_attr->act_nr_rwqes_rq2 + 1);
1188 ret |= ehea_init_q_skba(&pr->rq3_skba, init_attr->act_nr_rwqes_rq3 + 1);
1189 if (ret)
1190 goto out_free;
1191
1192 pr->swqe_refill_th = init_attr->act_nr_send_wqes / 10;
1193 if (ehea_gen_smrs(pr) != 0) {
1194 ret = -EIO;
1195 goto out_free;
1196 }
1197 tasklet_init(&pr->send_comp_task, ehea_send_irq_tasklet,
1198 (unsigned long)pr);
1199 atomic_set(&pr->swqe_avail, init_attr->act_nr_send_wqes - 1);
1200
1201 kfree(init_attr);
1202 ret = 0;
1203 goto out;
1204
1205 out_free:
1206 kfree(init_attr);
1207 vfree(pr->sq_skba.arr);
1208 vfree(pr->rq1_skba.arr);
1209 vfree(pr->rq2_skba.arr);
1210 vfree(pr->rq3_skba.arr);
1211 ehea_destroy_qp(pr->qp);
1212 ehea_destroy_cq(pr->send_cq);
1213 ehea_destroy_cq(pr->recv_cq);
1214 ehea_destroy_eq(pr->send_eq);
1215 ehea_destroy_eq(pr->recv_eq);
1216 out:
1217 return ret;
1218 }
1219
1220 static int ehea_clean_portres(struct ehea_port *port, struct ehea_port_res *pr)
1221 {
1222 int ret, i;
1223
1224 ret = ehea_destroy_qp(pr->qp);
1225
1226 if (!ret) {
1227 ehea_destroy_cq(pr->send_cq);
1228 ehea_destroy_cq(pr->recv_cq);
1229 ehea_destroy_eq(pr->send_eq);
1230 ehea_destroy_eq(pr->recv_eq);
1231
1232 for (i = 0; i < pr->rq1_skba.len; i++)
1233 if (pr->rq1_skba.arr[i])
1234 dev_kfree_skb(pr->rq1_skba.arr[i]);
1235
1236 for (i = 0; i < pr->rq2_skba.len; i++)
1237 if (pr->rq2_skba.arr[i])
1238 dev_kfree_skb(pr->rq2_skba.arr[i]);
1239
1240 for (i = 0; i < pr->rq3_skba.len; i++)
1241 if (pr->rq3_skba.arr[i])
1242 dev_kfree_skb(pr->rq3_skba.arr[i]);
1243
1244 for (i = 0; i < pr->sq_skba.len; i++)
1245 if (pr->sq_skba.arr[i])
1246 dev_kfree_skb(pr->sq_skba.arr[i]);
1247
1248 vfree(pr->rq1_skba.arr);
1249 vfree(pr->rq2_skba.arr);
1250 vfree(pr->rq3_skba.arr);
1251 vfree(pr->sq_skba.arr);
1252 ret = ehea_rem_smrs(pr);
1253 }
1254 return ret;
1255 }
1256
1257 /*
1258 * The write_* functions store information in swqe which is used by
1259 * the hardware to calculate the ip/tcp/udp checksum
1260 */
1261
1262 static inline void write_ip_start_end(struct ehea_swqe *swqe,
1263 const struct sk_buff *skb)
1264 {
1265 swqe->ip_start = (u8)(((u64)skb->nh.iph) - ((u64)skb->data));
1266 swqe->ip_end = (u8)(swqe->ip_start + skb->nh.iph->ihl * 4 - 1);
1267 }
1268
1269 static inline void write_tcp_offset_end(struct ehea_swqe *swqe,
1270 const struct sk_buff *skb)
1271 {
1272 swqe->tcp_offset =
1273 (u8)(swqe->ip_end + 1 + offsetof(struct tcphdr, check));
1274
1275 swqe->tcp_end = (u16)skb->len - 1;
1276 }
1277
1278 static inline void write_udp_offset_end(struct ehea_swqe *swqe,
1279 const struct sk_buff *skb)
1280 {
1281 swqe->tcp_offset =
1282 (u8)(swqe->ip_end + 1 + offsetof(struct udphdr, check));
1283
1284 swqe->tcp_end = (u16)skb->len - 1;
1285 }
1286
1287
1288 static void write_swqe2_TSO(struct sk_buff *skb,
1289 struct ehea_swqe *swqe, u32 lkey)
1290 {
1291 struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry;
1292 u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0];
1293 int skb_data_size = skb->len - skb->data_len;
1294 int headersize;
1295 u64 tmp_addr;
1296
1297 /* Packet is TCP with TSO enabled */
1298 swqe->tx_control |= EHEA_SWQE_TSO;
1299 swqe->mss = skb_shinfo(skb)->gso_size;
1300 /* copy only eth/ip/tcp headers to immediate data and
1301 * the rest of skb->data to sg1entry
1302 */
1303 headersize = ETH_HLEN + (skb->nh.iph->ihl * 4) + (skb->h.th->doff * 4);
1304
1305 skb_data_size = skb->len - skb->data_len;
1306
1307 if (skb_data_size >= headersize) {
1308 /* copy immediate data */
1309 memcpy(imm_data, skb->data, headersize);
1310 swqe->immediate_data_length = headersize;
1311
1312 if (skb_data_size > headersize) {
1313 /* set sg1entry data */
1314 sg1entry->l_key = lkey;
1315 sg1entry->len = skb_data_size - headersize;
1316
1317 tmp_addr = (u64)(skb->data + headersize);
1318 sg1entry->vaddr = tmp_addr;
1319 swqe->descriptors++;
1320 }
1321 } else
1322 ehea_error("cannot handle fragmented headers");
1323 }
1324
1325 static void write_swqe2_nonTSO(struct sk_buff *skb,
1326 struct ehea_swqe *swqe, u32 lkey)
1327 {
1328 int skb_data_size = skb->len - skb->data_len;
1329 u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0];
1330 struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry;
1331 u64 tmp_addr;
1332
1333 /* Packet is any nonTSO type
1334 *
1335 * Copy as much as possible skb->data to immediate data and
1336 * the rest to sg1entry
1337 */
1338 if (skb_data_size >= SWQE2_MAX_IMM) {
1339 /* copy immediate data */
1340 memcpy(imm_data, skb->data, SWQE2_MAX_IMM);
1341
1342 swqe->immediate_data_length = SWQE2_MAX_IMM;
1343
1344 if (skb_data_size > SWQE2_MAX_IMM) {
1345 /* copy sg1entry data */
1346 sg1entry->l_key = lkey;
1347 sg1entry->len = skb_data_size - SWQE2_MAX_IMM;
1348 tmp_addr = (u64)(skb->data + SWQE2_MAX_IMM);
1349 sg1entry->vaddr = tmp_addr;
1350 swqe->descriptors++;
1351 }
1352 } else {
1353 memcpy(imm_data, skb->data, skb_data_size);
1354 swqe->immediate_data_length = skb_data_size;
1355 }
1356 }
1357
1358 static inline void write_swqe2_data(struct sk_buff *skb, struct net_device *dev,
1359 struct ehea_swqe *swqe, u32 lkey)
1360 {
1361 struct ehea_vsgentry *sg_list, *sg1entry, *sgentry;
1362 skb_frag_t *frag;
1363 int nfrags, sg1entry_contains_frag_data, i;
1364 u64 tmp_addr;
1365
1366 nfrags = skb_shinfo(skb)->nr_frags;
1367 sg1entry = &swqe->u.immdata_desc.sg_entry;
1368 sg_list = (struct ehea_vsgentry*)&swqe->u.immdata_desc.sg_list;
1369 swqe->descriptors = 0;
1370 sg1entry_contains_frag_data = 0;
1371
1372 if ((dev->features & NETIF_F_TSO) && skb_shinfo(skb)->gso_size)
1373 write_swqe2_TSO(skb, swqe, lkey);
1374 else
1375 write_swqe2_nonTSO(skb, swqe, lkey);
1376
1377 /* write descriptors */
1378 if (nfrags > 0) {
1379 if (swqe->descriptors == 0) {
1380 /* sg1entry not yet used */
1381 frag = &skb_shinfo(skb)->frags[0];
1382
1383 /* copy sg1entry data */
1384 sg1entry->l_key = lkey;
1385 sg1entry->len = frag->size;
1386 tmp_addr = (u64)(page_address(frag->page)
1387 + frag->page_offset);
1388 sg1entry->vaddr = tmp_addr;
1389 swqe->descriptors++;
1390 sg1entry_contains_frag_data = 1;
1391 }
1392
1393 for (i = sg1entry_contains_frag_data; i < nfrags; i++) {
1394
1395 frag = &skb_shinfo(skb)->frags[i];
1396 sgentry = &sg_list[i - sg1entry_contains_frag_data];
1397
1398 sgentry->l_key = lkey;
1399 sgentry->len = frag->size;
1400
1401 tmp_addr = (u64)(page_address(frag->page)
1402 + frag->page_offset);
1403 sgentry->vaddr = tmp_addr;
1404 swqe->descriptors++;
1405 }
1406 }
1407 }
1408
1409 static int ehea_broadcast_reg_helper(struct ehea_port *port, u32 hcallid)
1410 {
1411 int ret = 0;
1412 u64 hret;
1413 u8 reg_type;
1414
1415 /* De/Register untagged packets */
1416 reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_UNTAGGED;
1417 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1418 port->logical_port_id,
1419 reg_type, port->mac_addr, 0, hcallid);
1420 if (hret != H_SUCCESS) {
1421 ehea_error("reg_dereg_bcmc failed (tagged)");
1422 ret = -EIO;
1423 goto out_herr;
1424 }
1425
1426 /* De/Register VLAN packets */
1427 reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_VLANID_ALL;
1428 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1429 port->logical_port_id,
1430 reg_type, port->mac_addr, 0, hcallid);
1431 if (hret != H_SUCCESS) {
1432 ehea_error("reg_dereg_bcmc failed (vlan)");
1433 ret = -EIO;
1434 }
1435 out_herr:
1436 return ret;
1437 }
1438
1439 static int ehea_set_mac_addr(struct net_device *dev, void *sa)
1440 {
1441 struct ehea_port *port = netdev_priv(dev);
1442 struct sockaddr *mac_addr = sa;
1443 struct hcp_ehea_port_cb0 *cb0;
1444 int ret;
1445 u64 hret;
1446
1447 if (!is_valid_ether_addr(mac_addr->sa_data)) {
1448 ret = -EADDRNOTAVAIL;
1449 goto out;
1450 }
1451
1452 cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL);
1453 if (!cb0) {
1454 ehea_error("no mem for cb0");
1455 ret = -ENOMEM;
1456 goto out;
1457 }
1458
1459 memcpy(&(cb0->port_mac_addr), &(mac_addr->sa_data[0]), ETH_ALEN);
1460
1461 cb0->port_mac_addr = cb0->port_mac_addr >> 16;
1462
1463 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1464 port->logical_port_id, H_PORT_CB0,
1465 EHEA_BMASK_SET(H_PORT_CB0_MAC, 1), cb0);
1466 if (hret != H_SUCCESS) {
1467 ret = -EIO;
1468 goto out_free;
1469 }
1470
1471 memcpy(dev->dev_addr, mac_addr->sa_data, dev->addr_len);
1472
1473 /* Deregister old MAC in pHYP */
1474 ret = ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
1475 if (ret)
1476 goto out_free;
1477
1478 port->mac_addr = cb0->port_mac_addr << 16;
1479
1480 /* Register new MAC in pHYP */
1481 ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
1482 if (ret)
1483 goto out_free;
1484
1485 ret = 0;
1486 out_free:
1487 kfree(cb0);
1488 out:
1489 return ret;
1490 }
1491
1492 static void ehea_promiscuous_error(u64 hret, int enable)
1493 {
1494 if (hret == H_AUTHORITY)
1495 ehea_info("Hypervisor denied %sabling promiscuous mode",
1496 enable == 1 ? "en" : "dis");
1497 else
1498 ehea_error("failed %sabling promiscuous mode",
1499 enable == 1 ? "en" : "dis");
1500 }
1501
1502 static void ehea_promiscuous(struct net_device *dev, int enable)
1503 {
1504 struct ehea_port *port = netdev_priv(dev);
1505 struct hcp_ehea_port_cb7 *cb7;
1506 u64 hret;
1507
1508 if ((enable && port->promisc) || (!enable && !port->promisc))
1509 return;
1510
1511 cb7 = kzalloc(PAGE_SIZE, GFP_ATOMIC);
1512 if (!cb7) {
1513 ehea_error("no mem for cb7");
1514 goto out;
1515 }
1516
1517 /* Modify Pxs_DUCQPN in CB7 */
1518 cb7->def_uc_qpn = enable == 1 ? port->port_res[0].qp->fw_handle : 0;
1519
1520 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1521 port->logical_port_id,
1522 H_PORT_CB7, H_PORT_CB7_DUCQPN, cb7);
1523 if (hret) {
1524 ehea_promiscuous_error(hret, enable);
1525 goto out;
1526 }
1527
1528 port->promisc = enable;
1529 out:
1530 kfree(cb7);
1531 return;
1532 }
1533
1534 static u64 ehea_multicast_reg_helper(struct ehea_port *port, u64 mc_mac_addr,
1535 u32 hcallid)
1536 {
1537 u64 hret;
1538 u8 reg_type;
1539
1540 reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST
1541 | EHEA_BCMC_UNTAGGED;
1542
1543 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1544 port->logical_port_id,
1545 reg_type, mc_mac_addr, 0, hcallid);
1546 if (hret)
1547 goto out;
1548
1549 reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST
1550 | EHEA_BCMC_VLANID_ALL;
1551
1552 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1553 port->logical_port_id,
1554 reg_type, mc_mac_addr, 0, hcallid);
1555 out:
1556 return hret;
1557 }
1558
1559 static int ehea_drop_multicast_list(struct net_device *dev)
1560 {
1561 struct ehea_port *port = netdev_priv(dev);
1562 struct ehea_mc_list *mc_entry = port->mc_list;
1563 struct list_head *pos;
1564 struct list_head *temp;
1565 int ret = 0;
1566 u64 hret;
1567
1568 list_for_each_safe(pos, temp, &(port->mc_list->list)) {
1569 mc_entry = list_entry(pos, struct ehea_mc_list, list);
1570
1571 hret = ehea_multicast_reg_helper(port, mc_entry->macaddr,
1572 H_DEREG_BCMC);
1573 if (hret) {
1574 ehea_error("failed deregistering mcast MAC");
1575 ret = -EIO;
1576 }
1577
1578 list_del(pos);
1579 kfree(mc_entry);
1580 }
1581 return ret;
1582 }
1583
1584 static void ehea_allmulti(struct net_device *dev, int enable)
1585 {
1586 struct ehea_port *port = netdev_priv(dev);
1587 u64 hret;
1588
1589 if (!port->allmulti) {
1590 if (enable) {
1591 /* Enable ALLMULTI */
1592 ehea_drop_multicast_list(dev);
1593 hret = ehea_multicast_reg_helper(port, 0, H_REG_BCMC);
1594 if (!hret)
1595 port->allmulti = 1;
1596 else
1597 ehea_error("failed enabling IFF_ALLMULTI");
1598 }
1599 } else
1600 if (!enable) {
1601 /* Disable ALLMULTI */
1602 hret = ehea_multicast_reg_helper(port, 0, H_DEREG_BCMC);
1603 if (!hret)
1604 port->allmulti = 0;
1605 else
1606 ehea_error("failed disabling IFF_ALLMULTI");
1607 }
1608 }
1609
1610 static void ehea_add_multicast_entry(struct ehea_port* port, u8* mc_mac_addr)
1611 {
1612 struct ehea_mc_list *ehea_mcl_entry;
1613 u64 hret;
1614
1615 ehea_mcl_entry = kzalloc(sizeof(*ehea_mcl_entry), GFP_ATOMIC);
1616 if (!ehea_mcl_entry) {
1617 ehea_error("no mem for mcl_entry");
1618 return;
1619 }
1620
1621 INIT_LIST_HEAD(&ehea_mcl_entry->list);
1622
1623 memcpy(&ehea_mcl_entry->macaddr, mc_mac_addr, ETH_ALEN);
1624
1625 hret = ehea_multicast_reg_helper(port, ehea_mcl_entry->macaddr,
1626 H_REG_BCMC);
1627 if (!hret)
1628 list_add(&ehea_mcl_entry->list, &port->mc_list->list);
1629 else {
1630 ehea_error("failed registering mcast MAC");
1631 kfree(ehea_mcl_entry);
1632 }
1633 }
1634
1635 static void ehea_set_multicast_list(struct net_device *dev)
1636 {
1637 struct ehea_port *port = netdev_priv(dev);
1638 struct dev_mc_list *k_mcl_entry;
1639 int ret, i;
1640
1641 if (dev->flags & IFF_PROMISC) {
1642 ehea_promiscuous(dev, 1);
1643 return;
1644 }
1645 ehea_promiscuous(dev, 0);
1646
1647 if (dev->flags & IFF_ALLMULTI) {
1648 ehea_allmulti(dev, 1);
1649 return;
1650 }
1651 ehea_allmulti(dev, 0);
1652
1653 if (dev->mc_count) {
1654 ret = ehea_drop_multicast_list(dev);
1655 if (ret) {
1656 /* Dropping the current multicast list failed.
1657 * Enabling ALL_MULTI is the best we can do.
1658 */
1659 ehea_allmulti(dev, 1);
1660 }
1661
1662 if (dev->mc_count > port->adapter->max_mc_mac) {
1663 ehea_info("Mcast registration limit reached (0x%lx). "
1664 "Use ALLMULTI!",
1665 port->adapter->max_mc_mac);
1666 goto out;
1667 }
1668
1669 for (i = 0, k_mcl_entry = dev->mc_list;
1670 i < dev->mc_count;
1671 i++, k_mcl_entry = k_mcl_entry->next) {
1672 ehea_add_multicast_entry(port, k_mcl_entry->dmi_addr);
1673 }
1674 }
1675 out:
1676 return;
1677 }
1678
1679 static int ehea_change_mtu(struct net_device *dev, int new_mtu)
1680 {
1681 if ((new_mtu < 68) || (new_mtu > EHEA_MAX_PACKET_SIZE))
1682 return -EINVAL;
1683 dev->mtu = new_mtu;
1684 return 0;
1685 }
1686
1687 static void ehea_xmit2(struct sk_buff *skb, struct net_device *dev,
1688 struct ehea_swqe *swqe, u32 lkey)
1689 {
1690 if (skb->protocol == htons(ETH_P_IP)) {
1691 /* IPv4 */
1692 swqe->tx_control |= EHEA_SWQE_CRC
1693 | EHEA_SWQE_IP_CHECKSUM
1694 | EHEA_SWQE_TCP_CHECKSUM
1695 | EHEA_SWQE_IMM_DATA_PRESENT
1696 | EHEA_SWQE_DESCRIPTORS_PRESENT;
1697
1698 write_ip_start_end(swqe, skb);
1699
1700 if (skb->nh.iph->protocol == IPPROTO_UDP) {
1701 if ((skb->nh.iph->frag_off & IP_MF) ||
1702 (skb->nh.iph->frag_off & IP_OFFSET))
1703 /* IP fragment, so don't change cs */
1704 swqe->tx_control &= ~EHEA_SWQE_TCP_CHECKSUM;
1705 else
1706 write_udp_offset_end(swqe, skb);
1707
1708 } else if (skb->nh.iph->protocol == IPPROTO_TCP) {
1709 write_tcp_offset_end(swqe, skb);
1710 }
1711
1712 /* icmp (big data) and ip segmentation packets (all other ip
1713 packets) do not require any special handling */
1714
1715 } else {
1716 /* Other Ethernet Protocol */
1717 swqe->tx_control |= EHEA_SWQE_CRC
1718 | EHEA_SWQE_IMM_DATA_PRESENT
1719 | EHEA_SWQE_DESCRIPTORS_PRESENT;
1720 }
1721
1722 write_swqe2_data(skb, dev, swqe, lkey);
1723 }
1724
1725 static void ehea_xmit3(struct sk_buff *skb, struct net_device *dev,
1726 struct ehea_swqe *swqe)
1727 {
1728 int nfrags = skb_shinfo(skb)->nr_frags;
1729 u8 *imm_data = &swqe->u.immdata_nodesc.immediate_data[0];
1730 skb_frag_t *frag;
1731 int i;
1732
1733 if (skb->protocol == htons(ETH_P_IP)) {
1734 /* IPv4 */
1735 write_ip_start_end(swqe, skb);
1736
1737 if (skb->nh.iph->protocol == IPPROTO_TCP) {
1738 swqe->tx_control |= EHEA_SWQE_CRC
1739 | EHEA_SWQE_IP_CHECKSUM
1740 | EHEA_SWQE_TCP_CHECKSUM
1741 | EHEA_SWQE_IMM_DATA_PRESENT;
1742
1743 write_tcp_offset_end(swqe, skb);
1744
1745 } else if (skb->nh.iph->protocol == IPPROTO_UDP) {
1746 if ((skb->nh.iph->frag_off & IP_MF) ||
1747 (skb->nh.iph->frag_off & IP_OFFSET))
1748 /* IP fragment, so don't change cs */
1749 swqe->tx_control |= EHEA_SWQE_CRC
1750 | EHEA_SWQE_IMM_DATA_PRESENT;
1751 else {
1752 swqe->tx_control |= EHEA_SWQE_CRC
1753 | EHEA_SWQE_IP_CHECKSUM
1754 | EHEA_SWQE_TCP_CHECKSUM
1755 | EHEA_SWQE_IMM_DATA_PRESENT;
1756
1757 write_udp_offset_end(swqe, skb);
1758 }
1759 } else {
1760 /* icmp (big data) and
1761 ip segmentation packets (all other ip packets) */
1762 swqe->tx_control |= EHEA_SWQE_CRC
1763 | EHEA_SWQE_IP_CHECKSUM
1764 | EHEA_SWQE_IMM_DATA_PRESENT;
1765 }
1766 } else {
1767 /* Other Ethernet Protocol */
1768 swqe->tx_control |= EHEA_SWQE_CRC | EHEA_SWQE_IMM_DATA_PRESENT;
1769 }
1770 /* copy (immediate) data */
1771 if (nfrags == 0) {
1772 /* data is in a single piece */
1773 memcpy(imm_data, skb->data, skb->len);
1774 } else {
1775 /* first copy data from the skb->data buffer ... */
1776 memcpy(imm_data, skb->data, skb->len - skb->data_len);
1777 imm_data += skb->len - skb->data_len;
1778
1779 /* ... then copy data from the fragments */
1780 for (i = 0; i < nfrags; i++) {
1781 frag = &skb_shinfo(skb)->frags[i];
1782 memcpy(imm_data,
1783 page_address(frag->page) + frag->page_offset,
1784 frag->size);
1785 imm_data += frag->size;
1786 }
1787 }
1788 swqe->immediate_data_length = skb->len;
1789 dev_kfree_skb(skb);
1790 }
1791
1792 static int ehea_start_xmit(struct sk_buff *skb, struct net_device *dev)
1793 {
1794 struct ehea_port *port = netdev_priv(dev);
1795 struct ehea_swqe *swqe;
1796 unsigned long flags;
1797 u32 lkey;
1798 int swqe_index;
1799 struct ehea_port_res *pr = &port->port_res[0];
1800
1801 spin_lock(&pr->xmit_lock);
1802
1803 swqe = ehea_get_swqe(pr->qp, &swqe_index);
1804 memset(swqe, 0, SWQE_HEADER_SIZE);
1805 atomic_dec(&pr->swqe_avail);
1806
1807 if (skb->len <= SWQE3_MAX_IMM) {
1808 u32 sig_iv = port->sig_comp_iv;
1809 u32 swqe_num = pr->swqe_id_counter;
1810 ehea_xmit3(skb, dev, swqe);
1811 swqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE3_TYPE)
1812 | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, swqe_num);
1813 if (pr->swqe_ll_count >= (sig_iv - 1)) {
1814 swqe->wr_id |= EHEA_BMASK_SET(EHEA_WR_ID_REFILL,
1815 sig_iv);
1816 swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
1817 pr->swqe_ll_count = 0;
1818 } else
1819 pr->swqe_ll_count += 1;
1820 } else {
1821 swqe->wr_id =
1822 EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE2_TYPE)
1823 | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, pr->swqe_id_counter)
1824 | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, pr->sq_skba.index);
1825 pr->sq_skba.arr[pr->sq_skba.index] = skb;
1826
1827 pr->sq_skba.index++;
1828 pr->sq_skba.index &= (pr->sq_skba.len - 1);
1829
1830 lkey = pr->send_mr.lkey;
1831 ehea_xmit2(skb, dev, swqe, lkey);
1832
1833 if (pr->swqe_count >= (EHEA_SIG_IV_LONG - 1)) {
1834 swqe->wr_id |= EHEA_BMASK_SET(EHEA_WR_ID_REFILL,
1835 EHEA_SIG_IV_LONG);
1836 swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
1837 pr->swqe_count = 0;
1838 } else
1839 pr->swqe_count += 1;
1840 }
1841 pr->swqe_id_counter += 1;
1842
1843 if (port->vgrp && vlan_tx_tag_present(skb)) {
1844 swqe->tx_control |= EHEA_SWQE_VLAN_INSERT;
1845 swqe->vlan_tag = vlan_tx_tag_get(skb);
1846 }
1847
1848 if (netif_msg_tx_queued(port)) {
1849 ehea_info("post swqe on QP %d", pr->qp->init_attr.qp_nr);
1850 ehea_dump(swqe, 512, "swqe");
1851 }
1852
1853 ehea_post_swqe(pr->qp, swqe);
1854 pr->tx_packets++;
1855
1856 if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) {
1857 spin_lock_irqsave(&pr->netif_queue, flags);
1858 if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) {
1859 netif_stop_queue(dev);
1860 pr->queue_stopped = 1;
1861 }
1862 spin_unlock_irqrestore(&pr->netif_queue, flags);
1863 }
1864 dev->trans_start = jiffies;
1865 spin_unlock(&pr->xmit_lock);
1866
1867 return NETDEV_TX_OK;
1868 }
1869
1870 static void ehea_vlan_rx_register(struct net_device *dev,
1871 struct vlan_group *grp)
1872 {
1873 struct ehea_port *port = netdev_priv(dev);
1874 struct ehea_adapter *adapter = port->adapter;
1875 struct hcp_ehea_port_cb1 *cb1;
1876 u64 hret;
1877
1878 port->vgrp = grp;
1879
1880 cb1 = kzalloc(PAGE_SIZE, GFP_KERNEL);
1881 if (!cb1) {
1882 ehea_error("no mem for cb1");
1883 goto out;
1884 }
1885
1886 if (grp)
1887 memset(cb1->vlan_filter, 0, sizeof(cb1->vlan_filter));
1888 else
1889 memset(cb1->vlan_filter, 0xFF, sizeof(cb1->vlan_filter));
1890
1891 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
1892 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
1893 if (hret != H_SUCCESS)
1894 ehea_error("modify_ehea_port failed");
1895
1896 kfree(cb1);
1897 out:
1898 return;
1899 }
1900
1901 static void ehea_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
1902 {
1903 struct ehea_port *port = netdev_priv(dev);
1904 struct ehea_adapter *adapter = port->adapter;
1905 struct hcp_ehea_port_cb1 *cb1;
1906 int index;
1907 u64 hret;
1908
1909 cb1 = kzalloc(PAGE_SIZE, GFP_KERNEL);
1910 if (!cb1) {
1911 ehea_error("no mem for cb1");
1912 goto out;
1913 }
1914
1915 hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
1916 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
1917 if (hret != H_SUCCESS) {
1918 ehea_error("query_ehea_port failed");
1919 goto out;
1920 }
1921
1922 index = (vid / 64);
1923 cb1->vlan_filter[index] |= ((u64)(1 << (vid & 0x3F)));
1924
1925 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
1926 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
1927 if (hret != H_SUCCESS)
1928 ehea_error("modify_ehea_port failed");
1929 out:
1930 kfree(cb1);
1931 return;
1932 }
1933
1934 static void ehea_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
1935 {
1936 struct ehea_port *port = netdev_priv(dev);
1937 struct ehea_adapter *adapter = port->adapter;
1938 struct hcp_ehea_port_cb1 *cb1;
1939 int index;
1940 u64 hret;
1941
1942 vlan_group_set_device(port->vgrp, vid, NULL);
1943
1944 cb1 = kzalloc(PAGE_SIZE, GFP_KERNEL);
1945 if (!cb1) {
1946 ehea_error("no mem for cb1");
1947 goto out;
1948 }
1949
1950 hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
1951 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
1952 if (hret != H_SUCCESS) {
1953 ehea_error("query_ehea_port failed");
1954 goto out;
1955 }
1956
1957 index = (vid / 64);
1958 cb1->vlan_filter[index] &= ~((u64)(1 << (vid & 0x3F)));
1959
1960 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
1961 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
1962 if (hret != H_SUCCESS)
1963 ehea_error("modify_ehea_port failed");
1964 out:
1965 kfree(cb1);
1966 return;
1967 }
1968
1969 int ehea_activate_qp(struct ehea_adapter *adapter, struct ehea_qp *qp)
1970 {
1971 int ret = -EIO;
1972 u64 hret;
1973 u16 dummy16 = 0;
1974 u64 dummy64 = 0;
1975 struct hcp_modify_qp_cb0* cb0;
1976
1977 cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL);
1978 if (!cb0) {
1979 ret = -ENOMEM;
1980 goto out;
1981 }
1982
1983 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
1984 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
1985 if (hret != H_SUCCESS) {
1986 ehea_error("query_ehea_qp failed (1)");
1987 goto out;
1988 }
1989
1990 cb0->qp_ctl_reg = H_QP_CR_STATE_INITIALIZED;
1991 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
1992 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
1993 &dummy64, &dummy64, &dummy16, &dummy16);
1994 if (hret != H_SUCCESS) {
1995 ehea_error("modify_ehea_qp failed (1)");
1996 goto out;
1997 }
1998
1999 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2000 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2001 if (hret != H_SUCCESS) {
2002 ehea_error("query_ehea_qp failed (2)");
2003 goto out;
2004 }
2005
2006 cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_INITIALIZED;
2007 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2008 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2009 &dummy64, &dummy64, &dummy16, &dummy16);
2010 if (hret != H_SUCCESS) {
2011 ehea_error("modify_ehea_qp failed (2)");
2012 goto out;
2013 }
2014
2015 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2016 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2017 if (hret != H_SUCCESS) {
2018 ehea_error("query_ehea_qp failed (3)");
2019 goto out;
2020 }
2021
2022 cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_RDY2SND;
2023 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2024 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2025 &dummy64, &dummy64, &dummy16, &dummy16);
2026 if (hret != H_SUCCESS) {
2027 ehea_error("modify_ehea_qp failed (3)");
2028 goto out;
2029 }
2030
2031 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2032 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2033 if (hret != H_SUCCESS) {
2034 ehea_error("query_ehea_qp failed (4)");
2035 goto out;
2036 }
2037
2038 ret = 0;
2039 out:
2040 kfree(cb0);
2041 return ret;
2042 }
2043
2044 static int ehea_port_res_setup(struct ehea_port *port, int def_qps,
2045 int add_tx_qps)
2046 {
2047 int ret, i;
2048 struct port_res_cfg pr_cfg, pr_cfg_small_rx;
2049 enum ehea_eq_type eq_type = EHEA_EQ;
2050
2051 port->qp_eq = ehea_create_eq(port->adapter, eq_type,
2052 EHEA_MAX_ENTRIES_EQ, 1);
2053 if (!port->qp_eq) {
2054 ret = -EINVAL;
2055 ehea_error("ehea_create_eq failed (qp_eq)");
2056 goto out_kill_eq;
2057 }
2058
2059 pr_cfg.max_entries_rcq = rq1_entries + rq2_entries + rq3_entries;
2060 pr_cfg.max_entries_scq = sq_entries;
2061 pr_cfg.max_entries_sq = sq_entries;
2062 pr_cfg.max_entries_rq1 = rq1_entries;
2063 pr_cfg.max_entries_rq2 = rq2_entries;
2064 pr_cfg.max_entries_rq3 = rq3_entries;
2065
2066 pr_cfg_small_rx.max_entries_rcq = 1;
2067 pr_cfg_small_rx.max_entries_scq = sq_entries;
2068 pr_cfg_small_rx.max_entries_sq = sq_entries;
2069 pr_cfg_small_rx.max_entries_rq1 = 1;
2070 pr_cfg_small_rx.max_entries_rq2 = 1;
2071 pr_cfg_small_rx.max_entries_rq3 = 1;
2072
2073 for (i = 0; i < def_qps; i++) {
2074 ret = ehea_init_port_res(port, &port->port_res[i], &pr_cfg, i);
2075 if (ret)
2076 goto out_clean_pr;
2077 }
2078 for (i = def_qps; i < def_qps + add_tx_qps; i++) {
2079 ret = ehea_init_port_res(port, &port->port_res[i],
2080 &pr_cfg_small_rx, i);
2081 if (ret)
2082 goto out_clean_pr;
2083 }
2084
2085 return 0;
2086
2087 out_clean_pr:
2088 while (--i >= 0)
2089 ehea_clean_portres(port, &port->port_res[i]);
2090
2091 out_kill_eq:
2092 ehea_destroy_eq(port->qp_eq);
2093 return ret;
2094 }
2095
2096 static int ehea_clean_all_portres(struct ehea_port *port)
2097 {
2098 int ret = 0;
2099 int i;
2100
2101 for(i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
2102 ret |= ehea_clean_portres(port, &port->port_res[i]);
2103
2104 ret |= ehea_destroy_eq(port->qp_eq);
2105
2106 return ret;
2107 }
2108
2109 static int ehea_up(struct net_device *dev)
2110 {
2111 int ret, i;
2112 struct ehea_port *port = netdev_priv(dev);
2113 u64 mac_addr = 0;
2114
2115 if (port->state == EHEA_PORT_UP)
2116 return 0;
2117
2118 ret = ehea_port_res_setup(port, port->num_def_qps,
2119 port->num_add_tx_qps);
2120 if (ret) {
2121 ehea_error("port_res_failed");
2122 goto out;
2123 }
2124
2125 /* Set default QP for this port */
2126 ret = ehea_configure_port(port);
2127 if (ret) {
2128 ehea_error("ehea_configure_port failed. ret:%d", ret);
2129 goto out_clean_pr;
2130 }
2131
2132 ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
2133 if (ret) {
2134 ret = -EIO;
2135 ehea_error("out_clean_pr");
2136 goto out_clean_pr;
2137 }
2138 mac_addr = (*(u64*)dev->dev_addr) >> 16;
2139
2140 ret = ehea_reg_interrupts(dev);
2141 if (ret) {
2142 ehea_error("out_dereg_bc");
2143 goto out_dereg_bc;
2144 }
2145
2146 for(i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
2147 ret = ehea_activate_qp(port->adapter, port->port_res[i].qp);
2148 if (ret) {
2149 ehea_error("activate_qp failed");
2150 goto out_free_irqs;
2151 }
2152 }
2153
2154 for(i = 0; i < port->num_def_qps; i++) {
2155 ret = ehea_fill_port_res(&port->port_res[i]);
2156 if (ret) {
2157 ehea_error("out_free_irqs");
2158 goto out_free_irqs;
2159 }
2160 }
2161
2162 ret = 0;
2163 port->state = EHEA_PORT_UP;
2164 goto out;
2165
2166 out_free_irqs:
2167 ehea_free_interrupts(dev);
2168
2169 out_dereg_bc:
2170 ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
2171
2172 out_clean_pr:
2173 ehea_clean_all_portres(port);
2174 out:
2175 return ret;
2176 }
2177
2178 static int ehea_open(struct net_device *dev)
2179 {
2180 int ret;
2181 struct ehea_port *port = netdev_priv(dev);
2182
2183 down(&port->port_lock);
2184
2185 if (netif_msg_ifup(port))
2186 ehea_info("enabling port %s", dev->name);
2187
2188 ret = ehea_up(dev);
2189 if (!ret)
2190 netif_start_queue(dev);
2191
2192 up(&port->port_lock);
2193
2194 return ret;
2195 }
2196
2197 static int ehea_down(struct net_device *dev)
2198 {
2199 int ret, i;
2200 struct ehea_port *port = netdev_priv(dev);
2201
2202 if (port->state == EHEA_PORT_DOWN)
2203 return 0;
2204
2205 ehea_drop_multicast_list(dev);
2206 ehea_free_interrupts(dev);
2207
2208 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
2209 tasklet_kill(&port->port_res[i].send_comp_task);
2210
2211 ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
2212 ret = ehea_clean_all_portres(port);
2213 port->state = EHEA_PORT_DOWN;
2214 return ret;
2215 }
2216
2217 static int ehea_stop(struct net_device *dev)
2218 {
2219 int ret;
2220 struct ehea_port *port = netdev_priv(dev);
2221
2222 if (netif_msg_ifdown(port))
2223 ehea_info("disabling port %s", dev->name);
2224
2225 flush_workqueue(port->adapter->ehea_wq);
2226 down(&port->port_lock);
2227 netif_stop_queue(dev);
2228 ret = ehea_down(dev);
2229 up(&port->port_lock);
2230 return ret;
2231 }
2232
2233 static void ehea_reset_port(struct work_struct *work)
2234 {
2235 int ret;
2236 struct ehea_port *port =
2237 container_of(work, struct ehea_port, reset_task);
2238 struct net_device *dev = port->netdev;
2239
2240 port->resets++;
2241 down(&port->port_lock);
2242 netif_stop_queue(dev);
2243 netif_poll_disable(dev);
2244
2245 ret = ehea_down(dev);
2246 if (ret)
2247 ehea_error("ehea_down failed. not all resources are freed");
2248
2249 ret = ehea_up(dev);
2250 if (ret) {
2251 ehea_error("Reset device %s failed: ret=%d", dev->name, ret);
2252 goto out;
2253 }
2254
2255 if (netif_msg_timer(port))
2256 ehea_info("Device %s resetted successfully", dev->name);
2257
2258 netif_poll_enable(dev);
2259 netif_wake_queue(dev);
2260 out:
2261 up(&port->port_lock);
2262 return;
2263 }
2264
2265 static void ehea_tx_watchdog(struct net_device *dev)
2266 {
2267 struct ehea_port *port = netdev_priv(dev);
2268
2269 if (netif_carrier_ok(dev))
2270 queue_work(port->adapter->ehea_wq, &port->reset_task);
2271 }
2272
2273 int ehea_sense_adapter_attr(struct ehea_adapter *adapter)
2274 {
2275 struct hcp_query_ehea *cb;
2276 struct device_node *lhea_dn = NULL;
2277 struct device_node *eth_dn = NULL;
2278 u64 hret;
2279 int ret;
2280
2281 cb = kzalloc(PAGE_SIZE, GFP_KERNEL);
2282 if (!cb) {
2283 ret = -ENOMEM;
2284 goto out;
2285 }
2286
2287 hret = ehea_h_query_ehea(adapter->handle, cb);
2288
2289 if (hret != H_SUCCESS) {
2290 ret = -EIO;
2291 goto out_herr;
2292 }
2293
2294 /* Determine the number of available logical ports
2295 * by counting the child nodes of the lhea OFDT entry
2296 */
2297 adapter->num_ports = 0;
2298 lhea_dn = of_find_node_by_name(lhea_dn, "lhea");
2299 do {
2300 eth_dn = of_get_next_child(lhea_dn, eth_dn);
2301 if (eth_dn)
2302 adapter->num_ports++;
2303 } while ( eth_dn );
2304 of_node_put(lhea_dn);
2305
2306 adapter->max_mc_mac = cb->max_mc_mac - 1;
2307 ret = 0;
2308
2309 out_herr:
2310 kfree(cb);
2311 out:
2312 return ret;
2313 }
2314
2315 static int ehea_setup_single_port(struct ehea_port *port,
2316 struct device_node *dn)
2317 {
2318 int ret;
2319 u64 hret;
2320 struct net_device *dev = port->netdev;
2321 struct ehea_adapter *adapter = port->adapter;
2322 struct hcp_ehea_port_cb4 *cb4;
2323 u32 *dn_log_port_id;
2324 int jumbo = 0;
2325
2326 sema_init(&port->port_lock, 1);
2327 port->state = EHEA_PORT_DOWN;
2328 port->sig_comp_iv = sq_entries / 10;
2329
2330 if (!dn) {
2331 ehea_error("bad device node: dn=%p", dn);
2332 ret = -EINVAL;
2333 goto out;
2334 }
2335
2336 port->of_dev_node = dn;
2337
2338 /* Determine logical port id */
2339 dn_log_port_id = (u32*)get_property(dn, "ibm,hea-port-no", NULL);
2340
2341 if (!dn_log_port_id) {
2342 ehea_error("bad device node: dn_log_port_id=%p",
2343 dn_log_port_id);
2344 ret = -EINVAL;
2345 goto out;
2346 }
2347 port->logical_port_id = *dn_log_port_id;
2348
2349 port->mc_list = kzalloc(sizeof(struct ehea_mc_list), GFP_KERNEL);
2350 if (!port->mc_list) {
2351 ret = -ENOMEM;
2352 goto out;
2353 }
2354
2355 INIT_LIST_HEAD(&port->mc_list->list);
2356
2357 ret = ehea_sense_port_attr(port);
2358 if (ret)
2359 goto out;
2360
2361 /* Enable Jumbo frames */
2362 cb4 = kzalloc(PAGE_SIZE, GFP_KERNEL);
2363 if (!cb4) {
2364 ehea_error("no mem for cb4");
2365 } else {
2366 hret = ehea_h_query_ehea_port(adapter->handle,
2367 port->logical_port_id,
2368 H_PORT_CB4,
2369 H_PORT_CB4_JUMBO, cb4);
2370
2371 if (hret == H_SUCCESS) {
2372 if (cb4->jumbo_frame)
2373 jumbo = 1;
2374 else {
2375 cb4->jumbo_frame = 1;
2376 hret = ehea_h_modify_ehea_port(adapter->handle,
2377 port->
2378 logical_port_id,
2379 H_PORT_CB4,
2380 H_PORT_CB4_JUMBO,
2381 cb4);
2382 if (hret == H_SUCCESS)
2383 jumbo = 1;
2384 }
2385 }
2386 kfree(cb4);
2387 }
2388
2389 /* initialize net_device structure */
2390 SET_MODULE_OWNER(dev);
2391
2392 memcpy(dev->dev_addr, &port->mac_addr, ETH_ALEN);
2393
2394 dev->open = ehea_open;
2395 dev->poll = ehea_poll;
2396 dev->weight = 64;
2397 dev->stop = ehea_stop;
2398 dev->hard_start_xmit = ehea_start_xmit;
2399 dev->get_stats = ehea_get_stats;
2400 dev->set_multicast_list = ehea_set_multicast_list;
2401 dev->set_mac_address = ehea_set_mac_addr;
2402 dev->change_mtu = ehea_change_mtu;
2403 dev->vlan_rx_register = ehea_vlan_rx_register;
2404 dev->vlan_rx_add_vid = ehea_vlan_rx_add_vid;
2405 dev->vlan_rx_kill_vid = ehea_vlan_rx_kill_vid;
2406 dev->features = NETIF_F_SG | NETIF_F_FRAGLIST | NETIF_F_TSO
2407 | NETIF_F_HIGHDMA | NETIF_F_HW_CSUM | NETIF_F_HW_VLAN_TX
2408 | NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_FILTER
2409 | NETIF_F_LLTX;
2410 dev->tx_timeout = &ehea_tx_watchdog;
2411 dev->watchdog_timeo = EHEA_WATCH_DOG_TIMEOUT;
2412
2413 INIT_WORK(&port->reset_task, ehea_reset_port);
2414
2415 ehea_set_ethtool_ops(dev);
2416
2417 ret = register_netdev(dev);
2418 if (ret) {
2419 ehea_error("register_netdev failed. ret=%d", ret);
2420 goto out_free;
2421 }
2422
2423 ehea_info("%s: Jumbo frames are %sabled", dev->name,
2424 jumbo == 1 ? "en" : "dis");
2425
2426 port->netdev = dev;
2427 ret = 0;
2428 goto out;
2429
2430 out_free:
2431 kfree(port->mc_list);
2432 out:
2433 return ret;
2434 }
2435
2436 static int ehea_setup_ports(struct ehea_adapter *adapter)
2437 {
2438 int ret;
2439 int port_setup_ok = 0;
2440 struct ehea_port *port;
2441 struct device_node *dn = NULL;
2442 struct net_device *dev;
2443 int i;
2444
2445 /* get port properties for all ports */
2446 for (i = 0; i < adapter->num_ports; i++) {
2447
2448 if (adapter->port[i])
2449 continue; /* port already up and running */
2450
2451 /* allocate memory for the port structures */
2452 dev = alloc_etherdev(sizeof(struct ehea_port));
2453
2454 if (!dev) {
2455 ehea_error("no mem for net_device");
2456 break;
2457 }
2458
2459 port = netdev_priv(dev);
2460 port->adapter = adapter;
2461 port->netdev = dev;
2462 adapter->port[i] = port;
2463 port->msg_enable = netif_msg_init(msg_level, EHEA_MSG_DEFAULT);
2464
2465 dn = of_find_node_by_name(dn, "ethernet");
2466 ret = ehea_setup_single_port(port, dn);
2467 if (ret) {
2468 /* Free mem for this port struct. The others will be
2469 processed on rollback */
2470 free_netdev(dev);
2471 adapter->port[i] = NULL;
2472 ehea_error("eHEA port %d setup failed, ret=%d", i, ret);
2473 }
2474 }
2475
2476 of_node_put(dn);
2477
2478 /* Check for succesfully set up ports */
2479 for (i = 0; i < adapter->num_ports; i++)
2480 if (adapter->port[i])
2481 port_setup_ok++;
2482
2483 if (port_setup_ok)
2484 ret = 0; /* At least some ports are setup correctly */
2485 else
2486 ret = -EINVAL;
2487
2488 return ret;
2489 }
2490
2491 static int __devinit ehea_probe(struct ibmebus_dev *dev,
2492 const struct of_device_id *id)
2493 {
2494 struct ehea_adapter *adapter;
2495 u64 *adapter_handle;
2496 int ret;
2497
2498 adapter = kzalloc(sizeof(*adapter), GFP_KERNEL);
2499 if (!adapter) {
2500 ret = -ENOMEM;
2501 dev_err(&dev->ofdev.dev, "no mem for ehea_adapter\n");
2502 goto out;
2503 }
2504
2505 adapter_handle = (u64*)get_property(dev->ofdev.node, "ibm,hea-handle",
2506 NULL);
2507 if (adapter_handle)
2508 adapter->handle = *adapter_handle;
2509
2510 if (!adapter->handle) {
2511 dev_err(&dev->ofdev.dev, "failed getting handle for adapter"
2512 " '%s'\n", dev->ofdev.node->full_name);
2513 ret = -ENODEV;
2514 goto out_free_ad;
2515 }
2516
2517 adapter->pd = EHEA_PD_ID;
2518
2519 dev->ofdev.dev.driver_data = adapter;
2520
2521 ret = ehea_reg_mr_adapter(adapter);
2522 if (ret) {
2523 dev_err(&dev->ofdev.dev, "reg_mr_adapter failed\n");
2524 goto out_free_ad;
2525 }
2526
2527 /* initialize adapter and ports */
2528 /* get adapter properties */
2529 ret = ehea_sense_adapter_attr(adapter);
2530 if (ret) {
2531 dev_err(&dev->ofdev.dev, "sense_adapter_attr failed: %d", ret);
2532 goto out_free_res;
2533 }
2534 dev_info(&dev->ofdev.dev, "%d eHEA ports found\n", adapter->num_ports);
2535
2536 adapter->neq = ehea_create_eq(adapter,
2537 EHEA_NEQ, EHEA_MAX_ENTRIES_EQ, 1);
2538 if (!adapter->neq) {
2539 dev_err(&dev->ofdev.dev, "NEQ creation failed");
2540 goto out_free_res;
2541 }
2542
2543 tasklet_init(&adapter->neq_tasklet, ehea_neq_tasklet,
2544 (unsigned long)adapter);
2545
2546 ret = ibmebus_request_irq(NULL, adapter->neq->attr.ist1,
2547 ehea_interrupt_neq, IRQF_DISABLED,
2548 "ehea_neq", adapter);
2549 if (ret) {
2550 dev_err(&dev->ofdev.dev, "requesting NEQ IRQ failed");
2551 goto out_kill_eq;
2552 }
2553
2554 adapter->ehea_wq = create_workqueue("ehea_wq");
2555 if (!adapter->ehea_wq)
2556 goto out_free_irq;
2557
2558 ret = ehea_setup_ports(adapter);
2559 if (ret) {
2560 dev_err(&dev->ofdev.dev, "setup_ports failed");
2561 goto out_kill_wq;
2562 }
2563
2564 ret = 0;
2565 goto out;
2566
2567 out_kill_wq:
2568 destroy_workqueue(adapter->ehea_wq);
2569
2570 out_free_irq:
2571 ibmebus_free_irq(NULL, adapter->neq->attr.ist1, adapter);
2572
2573 out_kill_eq:
2574 ehea_destroy_eq(adapter->neq);
2575
2576 out_free_res:
2577 ehea_h_free_resource(adapter->handle, adapter->mr.handle);
2578
2579 out_free_ad:
2580 kfree(adapter);
2581 out:
2582 return ret;
2583 }
2584
2585 static void ehea_shutdown_single_port(struct ehea_port *port)
2586 {
2587 unregister_netdev(port->netdev);
2588 kfree(port->mc_list);
2589 free_netdev(port->netdev);
2590 }
2591
2592 static int __devexit ehea_remove(struct ibmebus_dev *dev)
2593 {
2594 struct ehea_adapter *adapter = dev->ofdev.dev.driver_data;
2595 u64 hret;
2596 int i;
2597
2598 for (i = 0; i < adapter->num_ports; i++)
2599 if (adapter->port[i]) {
2600 ehea_shutdown_single_port(adapter->port[i]);
2601 adapter->port[i] = NULL;
2602 }
2603 destroy_workqueue(adapter->ehea_wq);
2604
2605 ibmebus_free_irq(NULL, adapter->neq->attr.ist1, adapter);
2606 tasklet_kill(&adapter->neq_tasklet);
2607
2608 ehea_destroy_eq(adapter->neq);
2609
2610 hret = ehea_h_free_resource(adapter->handle, adapter->mr.handle);
2611 if (hret) {
2612 dev_err(&dev->ofdev.dev, "free_resource_mr failed");
2613 return -EIO;
2614 }
2615 kfree(adapter);
2616 return 0;
2617 }
2618
2619 static int check_module_parm(void)
2620 {
2621 int ret = 0;
2622
2623 if ((rq1_entries < EHEA_MIN_ENTRIES_QP) ||
2624 (rq1_entries > EHEA_MAX_ENTRIES_RQ1)) {
2625 ehea_info("Bad parameter: rq1_entries");
2626 ret = -EINVAL;
2627 }
2628 if ((rq2_entries < EHEA_MIN_ENTRIES_QP) ||
2629 (rq2_entries > EHEA_MAX_ENTRIES_RQ2)) {
2630 ehea_info("Bad parameter: rq2_entries");
2631 ret = -EINVAL;
2632 }
2633 if ((rq3_entries < EHEA_MIN_ENTRIES_QP) ||
2634 (rq3_entries > EHEA_MAX_ENTRIES_RQ3)) {
2635 ehea_info("Bad parameter: rq3_entries");
2636 ret = -EINVAL;
2637 }
2638 if ((sq_entries < EHEA_MIN_ENTRIES_QP) ||
2639 (sq_entries > EHEA_MAX_ENTRIES_SQ)) {
2640 ehea_info("Bad parameter: sq_entries");
2641 ret = -EINVAL;
2642 }
2643
2644 return ret;
2645 }
2646
2647 static struct of_device_id ehea_device_table[] = {
2648 {
2649 .name = "lhea",
2650 .compatible = "IBM,lhea",
2651 },
2652 {},
2653 };
2654
2655 static struct ibmebus_driver ehea_driver = {
2656 .name = "ehea",
2657 .id_table = ehea_device_table,
2658 .probe = ehea_probe,
2659 .remove = ehea_remove,
2660 };
2661
2662 int __init ehea_module_init(void)
2663 {
2664 int ret;
2665
2666 printk(KERN_INFO "IBM eHEA ethernet device driver (Release %s)\n",
2667 DRV_VERSION);
2668
2669 ret = check_module_parm();
2670 if (ret)
2671 goto out;
2672 ret = ibmebus_register_driver(&ehea_driver);
2673 if (ret)
2674 ehea_error("failed registering eHEA device driver on ebus");
2675
2676 out:
2677 return ret;
2678 }
2679
2680 static void __exit ehea_module_exit(void)
2681 {
2682 ibmebus_unregister_driver(&ehea_driver);
2683 }
2684
2685 module_init(ehea_module_init);
2686 module_exit(ehea_module_exit);
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