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[hh.org.git] / drivers / net / ehea / ehea_main.c
blob6ad696101418f2ac22da0131fc8bd559ad48c32b
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 u32 qp_token;
559
560 eqe = ehea_poll_eq(port->qp_eq);
561 ehea_debug("eqe=%p", eqe);
562 while (eqe) {
563 ehea_debug("*eqe=%lx", *(u64*)eqe);
564 eqe = ehea_poll_eq(port->qp_eq);
565 qp_token = EHEA_BMASK_GET(EHEA_EQE_QP_TOKEN, eqe->entry);
566 ehea_debug("next eqe=%p", eqe);
567 }
568
569 return IRQ_HANDLED;
570 }
571
572 static struct ehea_port *ehea_get_port(struct ehea_adapter *adapter,
573 int logical_port)
574 {
575 int i;
576
577 for (i = 0; i < adapter->num_ports; i++)
578 if (adapter->port[i]->logical_port_id == logical_port)
579 return adapter->port[i];
580 return NULL;
581 }
582
583 int ehea_sense_port_attr(struct ehea_port *port)
584 {
585 int ret;
586 u64 hret;
587 struct hcp_ehea_port_cb0 *cb0;
588
589 cb0 = kzalloc(PAGE_SIZE, GFP_ATOMIC); /* May be called via */
590 if (!cb0) { /* ehea_neq_tasklet() */
591 ehea_error("no mem for cb0");
592 ret = -ENOMEM;
593 goto out;
594 }
595
596 hret = ehea_h_query_ehea_port(port->adapter->handle,
597 port->logical_port_id, H_PORT_CB0,
598 EHEA_BMASK_SET(H_PORT_CB0_ALL, 0xFFFF),
599 cb0);
600 if (hret != H_SUCCESS) {
601 ret = -EIO;
602 goto out_free;
603 }
604
605 /* MAC address */
606 port->mac_addr = cb0->port_mac_addr << 16;
607
608 if (!is_valid_ether_addr((u8*)&port->mac_addr)) {
609 ret = -EADDRNOTAVAIL;
610 goto out_free;
611 }
612
613 /* Port speed */
614 switch (cb0->port_speed) {
615 case H_SPEED_10M_H:
616 port->port_speed = EHEA_SPEED_10M;
617 port->full_duplex = 0;
618 break;
619 case H_SPEED_10M_F:
620 port->port_speed = EHEA_SPEED_10M;
621 port->full_duplex = 1;
622 break;
623 case H_SPEED_100M_H:
624 port->port_speed = EHEA_SPEED_100M;
625 port->full_duplex = 0;
626 break;
627 case H_SPEED_100M_F:
628 port->port_speed = EHEA_SPEED_100M;
629 port->full_duplex = 1;
630 break;
631 case H_SPEED_1G_F:
632 port->port_speed = EHEA_SPEED_1G;
633 port->full_duplex = 1;
634 break;
635 case H_SPEED_10G_F:
636 port->port_speed = EHEA_SPEED_10G;
637 port->full_duplex = 1;
638 break;
639 default:
640 port->port_speed = 0;
641 port->full_duplex = 0;
642 break;
643 }
644
645 /* Number of default QPs */
646 port->num_def_qps = cb0->num_default_qps;
647
648 if (!port->num_def_qps) {
649 ret = -EINVAL;
650 goto out_free;
651 }
652
653 if (port->num_def_qps >= EHEA_NUM_TX_QP)
654 port->num_add_tx_qps = 0;
655 else
656 port->num_add_tx_qps = EHEA_NUM_TX_QP - port->num_def_qps;
657
658 ret = 0;
659 out_free:
660 if (ret || netif_msg_probe(port))
661 ehea_dump(cb0, sizeof(*cb0), "ehea_sense_port_attr");
662 kfree(cb0);
663 out:
664 return ret;
665 }
666
667 int ehea_set_portspeed(struct ehea_port *port, u32 port_speed)
668 {
669 struct hcp_ehea_port_cb4 *cb4;
670 u64 hret;
671 int ret = 0;
672
673 cb4 = kzalloc(PAGE_SIZE, GFP_KERNEL);
674 if (!cb4) {
675 ehea_error("no mem for cb4");
676 ret = -ENOMEM;
677 goto out;
678 }
679
680 cb4->port_speed = port_speed;
681
682 netif_carrier_off(port->netdev);
683
684 hret = ehea_h_modify_ehea_port(port->adapter->handle,
685 port->logical_port_id,
686 H_PORT_CB4, H_PORT_CB4_SPEED, cb4);
687 if (hret == H_SUCCESS) {
688 port->autoneg = port_speed == EHEA_SPEED_AUTONEG ? 1 : 0;
689
690 hret = ehea_h_query_ehea_port(port->adapter->handle,
691 port->logical_port_id,
692 H_PORT_CB4, H_PORT_CB4_SPEED,
693 cb4);
694 if (hret == H_SUCCESS) {
695 switch (cb4->port_speed) {
696 case H_SPEED_10M_H:
697 port->port_speed = EHEA_SPEED_10M;
698 port->full_duplex = 0;
699 break;
700 case H_SPEED_10M_F:
701 port->port_speed = EHEA_SPEED_10M;
702 port->full_duplex = 1;
703 break;
704 case H_SPEED_100M_H:
705 port->port_speed = EHEA_SPEED_100M;
706 port->full_duplex = 0;
707 break;
708 case H_SPEED_100M_F:
709 port->port_speed = EHEA_SPEED_100M;
710 port->full_duplex = 1;
711 break;
712 case H_SPEED_1G_F:
713 port->port_speed = EHEA_SPEED_1G;
714 port->full_duplex = 1;
715 break;
716 case H_SPEED_10G_F:
717 port->port_speed = EHEA_SPEED_10G;
718 port->full_duplex = 1;
719 break;
720 default:
721 port->port_speed = 0;
722 port->full_duplex = 0;
723 break;
724 }
725 } else {
726 ehea_error("Failed sensing port speed");
727 ret = -EIO;
728 }
729 } else {
730 if (hret == H_AUTHORITY) {
731 ehea_info("Hypervisor denied setting port speed. Either"
732 " this partition is not authorized to set "
733 "port speed or another partition has modified"
734 " port speed first.");
735 ret = -EPERM;
736 } else {
737 ret = -EIO;
738 ehea_error("Failed setting port speed");
739 }
740 }
741 netif_carrier_on(port->netdev);
742 kfree(cb4);
743 out:
744 return ret;
745 }
746
747 static void ehea_parse_eqe(struct ehea_adapter *adapter, u64 eqe)
748 {
749 int ret;
750 u8 ec;
751 u8 portnum;
752 struct ehea_port *port;
753
754 ec = EHEA_BMASK_GET(NEQE_EVENT_CODE, eqe);
755 portnum = EHEA_BMASK_GET(NEQE_PORTNUM, eqe);
756 port = ehea_get_port(adapter, portnum);
757
758 switch (ec) {
759 case EHEA_EC_PORTSTATE_CHG: /* port state change */
760
761 if (!port) {
762 ehea_error("unknown portnum %x", portnum);
763 break;
764 }
765
766 if (EHEA_BMASK_GET(NEQE_PORT_UP, eqe)) {
767 if (!netif_carrier_ok(port->netdev)) {
768 ret = ehea_sense_port_attr(port);
769 if (ret) {
770 ehea_error("failed resensing port "
771 "attributes");
772 break;
773 }
774
775 if (netif_msg_link(port))
776 ehea_info("%s: Logical port up: %dMbps "
777 "%s Duplex",
778 port->netdev->name,
779 port->port_speed,
780 port->full_duplex ==
781 1 ? "Full" : "Half");
782
783 netif_carrier_on(port->netdev);
784 netif_wake_queue(port->netdev);
785 }
786 } else
787 if (netif_carrier_ok(port->netdev)) {
788 if (netif_msg_link(port))
789 ehea_info("%s: Logical port down",
790 port->netdev->name);
791 netif_carrier_off(port->netdev);
792 netif_stop_queue(port->netdev);
793 }
794
795 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PORT_UP, eqe)) {
796 if (netif_msg_link(port))
797 ehea_info("%s: Physical port up",
798 port->netdev->name);
799 } else {
800 if (netif_msg_link(port))
801 ehea_info("%s: Physical port down",
802 port->netdev->name);
803 }
804
805 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PRIMARY, eqe))
806 ehea_info("External switch port is primary port");
807 else
808 ehea_info("External switch port is backup port");
809
810 break;
811 case EHEA_EC_ADAPTER_MALFUNC:
812 ehea_error("Adapter malfunction");
813 break;
814 case EHEA_EC_PORT_MALFUNC:
815 ehea_info("Port malfunction: Device: %s", port->netdev->name);
816 netif_carrier_off(port->netdev);
817 netif_stop_queue(port->netdev);
818 break;
819 default:
820 ehea_error("unknown event code %x, eqe=0x%lX", ec, eqe);
821 break;
822 }
823 }
824
825 static void ehea_neq_tasklet(unsigned long data)
826 {
827 struct ehea_adapter *adapter = (struct ehea_adapter*)data;
828 struct ehea_eqe *eqe;
829 u64 event_mask;
830
831 eqe = ehea_poll_eq(adapter->neq);
832 ehea_debug("eqe=%p", eqe);
833
834 while (eqe) {
835 ehea_debug("*eqe=%lx", eqe->entry);
836 ehea_parse_eqe(adapter, eqe->entry);
837 eqe = ehea_poll_eq(adapter->neq);
838 ehea_debug("next eqe=%p", eqe);
839 }
840
841 event_mask = EHEA_BMASK_SET(NELR_PORTSTATE_CHG, 1)
842 | EHEA_BMASK_SET(NELR_ADAPTER_MALFUNC, 1)
843 | EHEA_BMASK_SET(NELR_PORT_MALFUNC, 1);
844
845 ehea_h_reset_events(adapter->handle,
846 adapter->neq->fw_handle, event_mask);
847 }
848
849 static irqreturn_t ehea_interrupt_neq(int irq, void *param)
850 {
851 struct ehea_adapter *adapter = param;
852 tasklet_hi_schedule(&adapter->neq_tasklet);
853 return IRQ_HANDLED;
854 }
855
856
857 static int ehea_fill_port_res(struct ehea_port_res *pr)
858 {
859 int ret;
860 struct ehea_qp_init_attr *init_attr = &pr->qp->init_attr;
861
862 ret = ehea_init_fill_rq1(pr, init_attr->act_nr_rwqes_rq1
863 - init_attr->act_nr_rwqes_rq2
864 - init_attr->act_nr_rwqes_rq3 - 1);
865
866 ret |= ehea_refill_rq2(pr, init_attr->act_nr_rwqes_rq2 - 1);
867
868 ret |= ehea_refill_rq3(pr, init_attr->act_nr_rwqes_rq3 - 1);
869
870 return ret;
871 }
872
873 static int ehea_reg_interrupts(struct net_device *dev)
874 {
875 struct ehea_port *port = netdev_priv(dev);
876 struct ehea_port_res *pr;
877 int i, ret;
878
879 for (i = 0; i < port->num_def_qps; i++) {
880 pr = &port->port_res[i];
881 snprintf(pr->int_recv_name, EHEA_IRQ_NAME_SIZE - 1
882 , "%s-recv%d", dev->name, i);
883 ret = ibmebus_request_irq(NULL, pr->recv_eq->attr.ist1,
884 ehea_recv_irq_handler,
885 SA_INTERRUPT, pr->int_recv_name, pr);
886 if (ret) {
887 ehea_error("failed registering irq for ehea_recv_int:"
888 "port_res_nr:%d, ist=%X", i,
889 pr->recv_eq->attr.ist1);
890 goto out_free_seq;
891 }
892 if (netif_msg_ifup(port))
893 ehea_info("irq_handle 0x%X for funct ehea_recv_int %d "
894 "registered", pr->recv_eq->attr.ist1, i);
895 }
896
897 snprintf(port->int_aff_name, EHEA_IRQ_NAME_SIZE - 1, "%s-aff",
898 dev->name);
899
900 ret = ibmebus_request_irq(NULL, port->qp_eq->attr.ist1,
901 ehea_qp_aff_irq_handler,
902 SA_INTERRUPT, port->int_aff_name, port);
903 if (ret) {
904 ehea_error("failed registering irq for qp_aff_irq_handler:"
905 "ist=%X", port->qp_eq->attr.ist1);
906 goto out_free_qpeq;
907 }
908
909 if (netif_msg_ifup(port))
910 ehea_info("irq_handle 0x%X for function qp_aff_irq_handler "
911 "registered", port->qp_eq->attr.ist1);
912
913 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
914 pr = &port->port_res[i];
915 snprintf(pr->int_send_name, EHEA_IRQ_NAME_SIZE - 1,
916 "%s-send%d", dev->name, i);
917 ret = ibmebus_request_irq(NULL, pr->send_eq->attr.ist1,
918 ehea_send_irq_handler,
919 SA_INTERRUPT, pr->int_send_name,
920 pr);
921 if (ret) {
922 ehea_error("failed registering irq for ehea_send "
923 "port_res_nr:%d, ist=%X", i,
924 pr->send_eq->attr.ist1);
925 goto out_free_req;
926 }
927 if (netif_msg_ifup(port))
928 ehea_info("irq_handle 0x%X for function ehea_send_int "
929 "%d registered", pr->send_eq->attr.ist1, i);
930 }
931 out:
932 return ret;
933
934 out_free_req:
935 while (--i >= 0) {
936 u32 ist = port->port_res[i].send_eq->attr.ist1;
937 ibmebus_free_irq(NULL, ist, &port->port_res[i]);
938 }
939 out_free_qpeq:
940 ibmebus_free_irq(NULL, port->qp_eq->attr.ist1, port);
941 i = port->num_def_qps;
942 out_free_seq:
943 while (--i >= 0) {
944 u32 ist = port->port_res[i].recv_eq->attr.ist1;
945 ibmebus_free_irq(NULL, ist, &port->port_res[i]);
946 }
947 goto out;
948 }
949
950 static void ehea_free_interrupts(struct net_device *dev)
951 {
952 struct ehea_port *port = netdev_priv(dev);
953 struct ehea_port_res *pr;
954 int i;
955
956 /* send */
957 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
958 pr = &port->port_res[i];
959 ibmebus_free_irq(NULL, pr->send_eq->attr.ist1, pr);
960 if (netif_msg_intr(port))
961 ehea_info("free send irq for res %d with handle 0x%X",
962 i, pr->send_eq->attr.ist1);
963 }
964
965 /* receive */
966 for (i = 0; i < port->num_def_qps; i++) {
967 pr = &port->port_res[i];
968 ibmebus_free_irq(NULL, pr->recv_eq->attr.ist1, pr);
969 if (netif_msg_intr(port))
970 ehea_info("free recv irq for res %d with handle 0x%X",
971 i, pr->recv_eq->attr.ist1);
972 }
973
974 /* associated events */
975 ibmebus_free_irq(NULL, port->qp_eq->attr.ist1, port);
976 if (netif_msg_intr(port))
977 ehea_info("associated event interrupt for handle 0x%X freed",
978 port->qp_eq->attr.ist1);
979 }
980
981 static int ehea_configure_port(struct ehea_port *port)
982 {
983 int ret, i;
984 u64 hret, mask;
985 struct hcp_ehea_port_cb0 *cb0;
986
987 ret = -ENOMEM;
988 cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL);
989 if (!cb0)
990 goto out;
991
992 cb0->port_rc = EHEA_BMASK_SET(PXLY_RC_VALID, 1)
993 | EHEA_BMASK_SET(PXLY_RC_IP_CHKSUM, 1)
994 | EHEA_BMASK_SET(PXLY_RC_TCP_UDP_CHKSUM, 1)
995 | EHEA_BMASK_SET(PXLY_RC_VLAN_XTRACT, 1)
996 | EHEA_BMASK_SET(PXLY_RC_VLAN_TAG_FILTER,
997 PXLY_RC_VLAN_FILTER)
998 | EHEA_BMASK_SET(PXLY_RC_JUMBO_FRAME, 1);
999
1000 for (i = 0; i < port->num_def_qps; i++)
1001 cb0->default_qpn_arr[i] = port->port_res[i].qp->init_attr.qp_nr;
1002
1003 if (netif_msg_ifup(port))
1004 ehea_dump(cb0, sizeof(*cb0), "ehea_configure_port");
1005
1006 mask = EHEA_BMASK_SET(H_PORT_CB0_PRC, 1)
1007 | EHEA_BMASK_SET(H_PORT_CB0_DEFQPNARRAY, 1);
1008
1009 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1010 port->logical_port_id,
1011 H_PORT_CB0, mask, cb0);
1012 ret = -EIO;
1013 if (hret != H_SUCCESS)
1014 goto out_free;
1015
1016 ret = 0;
1017
1018 out_free:
1019 kfree(cb0);
1020 out:
1021 return ret;
1022 }
1023
1024 static int ehea_gen_smrs(struct ehea_port_res *pr)
1025 {
1026 u64 hret;
1027 struct ehea_adapter *adapter = pr->port->adapter;
1028
1029 hret = ehea_h_register_smr(adapter->handle, adapter->mr.handle,
1030 adapter->mr.vaddr, EHEA_MR_ACC_CTRL,
1031 adapter->pd, &pr->send_mr);
1032 if (hret != H_SUCCESS)
1033 goto out;
1034
1035 hret = ehea_h_register_smr(adapter->handle, adapter->mr.handle,
1036 adapter->mr.vaddr, EHEA_MR_ACC_CTRL,
1037 adapter->pd, &pr->recv_mr);
1038 if (hret != H_SUCCESS)
1039 goto out_freeres;
1040
1041 return 0;
1042
1043 out_freeres:
1044 hret = ehea_h_free_resource(adapter->handle, pr->send_mr.handle);
1045 if (hret != H_SUCCESS)
1046 ehea_error("failed freeing SMR");
1047 out:
1048 return -EIO;
1049 }
1050
1051 static int ehea_rem_smrs(struct ehea_port_res *pr)
1052 {
1053 struct ehea_adapter *adapter = pr->port->adapter;
1054 int ret = 0;
1055 u64 hret;
1056
1057 hret = ehea_h_free_resource(adapter->handle, pr->send_mr.handle);
1058 if (hret != H_SUCCESS) {
1059 ret = -EIO;
1060 ehea_error("failed freeing send SMR for pr=%p", pr);
1061 }
1062
1063 hret = ehea_h_free_resource(adapter->handle, pr->recv_mr.handle);
1064 if (hret != H_SUCCESS) {
1065 ret = -EIO;
1066 ehea_error("failed freeing recv SMR for pr=%p", pr);
1067 }
1068
1069 return ret;
1070 }
1071
1072 static int ehea_init_q_skba(struct ehea_q_skb_arr *q_skba, int max_q_entries)
1073 {
1074 int arr_size = sizeof(void*) * max_q_entries;
1075
1076 q_skba->arr = vmalloc(arr_size);
1077 if (!q_skba->arr)
1078 return -ENOMEM;
1079
1080 memset(q_skba->arr, 0, arr_size);
1081
1082 q_skba->len = max_q_entries;
1083 q_skba->index = 0;
1084 q_skba->os_skbs = 0;
1085
1086 return 0;
1087 }
1088
1089 static int ehea_init_port_res(struct ehea_port *port, struct ehea_port_res *pr,
1090 struct port_res_cfg *pr_cfg, int queue_token)
1091 {
1092 struct ehea_adapter *adapter = port->adapter;
1093 enum ehea_eq_type eq_type = EHEA_EQ;
1094 struct ehea_qp_init_attr *init_attr = NULL;
1095 int ret = -EIO;
1096
1097 memset(pr, 0, sizeof(struct ehea_port_res));
1098
1099 pr->port = port;
1100 spin_lock_init(&pr->send_lock);
1101 spin_lock_init(&pr->recv_lock);
1102 spin_lock_init(&pr->xmit_lock);
1103 spin_lock_init(&pr->netif_queue);
1104
1105 pr->recv_eq = ehea_create_eq(adapter, eq_type, EHEA_MAX_ENTRIES_EQ, 0);
1106 if (!pr->recv_eq) {
1107 ehea_error("create_eq failed (recv_eq)");
1108 goto out_free;
1109 }
1110
1111 pr->send_eq = ehea_create_eq(adapter, eq_type, EHEA_MAX_ENTRIES_EQ, 0);
1112 if (!pr->send_eq) {
1113 ehea_error("create_eq failed (send_eq)");
1114 goto out_free;
1115 }
1116
1117 pr->recv_cq = ehea_create_cq(adapter, pr_cfg->max_entries_rcq,
1118 pr->recv_eq->fw_handle,
1119 port->logical_port_id);
1120 if (!pr->recv_cq) {
1121 ehea_error("create_cq failed (cq_recv)");
1122 goto out_free;
1123 }
1124
1125 pr->send_cq = ehea_create_cq(adapter, pr_cfg->max_entries_scq,
1126 pr->send_eq->fw_handle,
1127 port->logical_port_id);
1128 if (!pr->send_cq) {
1129 ehea_error("create_cq failed (cq_send)");
1130 goto out_free;
1131 }
1132
1133 if (netif_msg_ifup(port))
1134 ehea_info("Send CQ: act_nr_cqes=%d, Recv CQ: act_nr_cqes=%d",
1135 pr->send_cq->attr.act_nr_of_cqes,
1136 pr->recv_cq->attr.act_nr_of_cqes);
1137
1138 init_attr = kzalloc(sizeof(*init_attr), GFP_KERNEL);
1139 if (!init_attr) {
1140 ret = -ENOMEM;
1141 ehea_error("no mem for ehea_qp_init_attr");
1142 goto out_free;
1143 }
1144
1145 init_attr->low_lat_rq1 = 1;
1146 init_attr->signalingtype = 1; /* generate CQE if specified in WQE */
1147 init_attr->rq_count = 3;
1148 init_attr->qp_token = queue_token;
1149 init_attr->max_nr_send_wqes = pr_cfg->max_entries_sq;
1150 init_attr->max_nr_rwqes_rq1 = pr_cfg->max_entries_rq1;
1151 init_attr->max_nr_rwqes_rq2 = pr_cfg->max_entries_rq2;
1152 init_attr->max_nr_rwqes_rq3 = pr_cfg->max_entries_rq3;
1153 init_attr->wqe_size_enc_sq = EHEA_SG_SQ;
1154 init_attr->wqe_size_enc_rq1 = EHEA_SG_RQ1;
1155 init_attr->wqe_size_enc_rq2 = EHEA_SG_RQ2;
1156 init_attr->wqe_size_enc_rq3 = EHEA_SG_RQ3;
1157 init_attr->rq2_threshold = EHEA_RQ2_THRESHOLD;
1158 init_attr->rq3_threshold = EHEA_RQ3_THRESHOLD;
1159 init_attr->port_nr = port->logical_port_id;
1160 init_attr->send_cq_handle = pr->send_cq->fw_handle;
1161 init_attr->recv_cq_handle = pr->recv_cq->fw_handle;
1162 init_attr->aff_eq_handle = port->qp_eq->fw_handle;
1163
1164 pr->qp = ehea_create_qp(adapter, adapter->pd, init_attr);
1165 if (!pr->qp) {
1166 ehea_error("create_qp failed");
1167 ret = -EIO;
1168 goto out_free;
1169 }
1170
1171 if (netif_msg_ifup(port))
1172 ehea_info("QP: qp_nr=%d\n act_nr_snd_wqe=%d\n nr_rwqe_rq1=%d\n "
1173 "nr_rwqe_rq2=%d\n nr_rwqe_rq3=%d", init_attr->qp_nr,
1174 init_attr->act_nr_send_wqes,
1175 init_attr->act_nr_rwqes_rq1,
1176 init_attr->act_nr_rwqes_rq2,
1177 init_attr->act_nr_rwqes_rq3);
1178
1179 ret = ehea_init_q_skba(&pr->sq_skba, init_attr->act_nr_send_wqes + 1);
1180 ret |= ehea_init_q_skba(&pr->rq1_skba, init_attr->act_nr_rwqes_rq1 + 1);
1181 ret |= ehea_init_q_skba(&pr->rq2_skba, init_attr->act_nr_rwqes_rq2 + 1);
1182 ret |= ehea_init_q_skba(&pr->rq3_skba, init_attr->act_nr_rwqes_rq3 + 1);
1183 if (ret)
1184 goto out_free;
1185
1186 pr->swqe_refill_th = init_attr->act_nr_send_wqes / 10;
1187 if (ehea_gen_smrs(pr) != 0) {
1188 ret = -EIO;
1189 goto out_free;
1190 }
1191 tasklet_init(&pr->send_comp_task, ehea_send_irq_tasklet,
1192 (unsigned long)pr);
1193 atomic_set(&pr->swqe_avail, init_attr->act_nr_send_wqes - 1);
1194
1195 kfree(init_attr);
1196 ret = 0;
1197 goto out;
1198
1199 out_free:
1200 kfree(init_attr);
1201 vfree(pr->sq_skba.arr);
1202 vfree(pr->rq1_skba.arr);
1203 vfree(pr->rq2_skba.arr);
1204 vfree(pr->rq3_skba.arr);
1205 ehea_destroy_qp(pr->qp);
1206 ehea_destroy_cq(pr->send_cq);
1207 ehea_destroy_cq(pr->recv_cq);
1208 ehea_destroy_eq(pr->send_eq);
1209 ehea_destroy_eq(pr->recv_eq);
1210 out:
1211 return ret;
1212 }
1213
1214 static int ehea_clean_portres(struct ehea_port *port, struct ehea_port_res *pr)
1215 {
1216 int ret, i;
1217
1218 ret = ehea_destroy_qp(pr->qp);
1219
1220 if (!ret) {
1221 ehea_destroy_cq(pr->send_cq);
1222 ehea_destroy_cq(pr->recv_cq);
1223 ehea_destroy_eq(pr->send_eq);
1224 ehea_destroy_eq(pr->recv_eq);
1225
1226 for (i = 0; i < pr->rq1_skba.len; i++)
1227 if (pr->rq1_skba.arr[i])
1228 dev_kfree_skb(pr->rq1_skba.arr[i]);
1229
1230 for (i = 0; i < pr->rq2_skba.len; i++)
1231 if (pr->rq2_skba.arr[i])
1232 dev_kfree_skb(pr->rq2_skba.arr[i]);
1233
1234 for (i = 0; i < pr->rq3_skba.len; i++)
1235 if (pr->rq3_skba.arr[i])
1236 dev_kfree_skb(pr->rq3_skba.arr[i]);
1237
1238 for (i = 0; i < pr->sq_skba.len; i++)
1239 if (pr->sq_skba.arr[i])
1240 dev_kfree_skb(pr->sq_skba.arr[i]);
1241
1242 vfree(pr->rq1_skba.arr);
1243 vfree(pr->rq2_skba.arr);
1244 vfree(pr->rq3_skba.arr);
1245 vfree(pr->sq_skba.arr);
1246 ret = ehea_rem_smrs(pr);
1247 }
1248 return ret;
1249 }
1250
1251 /*
1252 * The write_* functions store information in swqe which is used by
1253 * the hardware to calculate the ip/tcp/udp checksum
1254 */
1255
1256 static inline void write_ip_start_end(struct ehea_swqe *swqe,
1257 const struct sk_buff *skb)
1258 {
1259 swqe->ip_start = (u8)(((u64)skb->nh.iph) - ((u64)skb->data));
1260 swqe->ip_end = (u8)(swqe->ip_start + skb->nh.iph->ihl * 4 - 1);
1261 }
1262
1263 static inline void write_tcp_offset_end(struct ehea_swqe *swqe,
1264 const struct sk_buff *skb)
1265 {
1266 swqe->tcp_offset =
1267 (u8)(swqe->ip_end + 1 + offsetof(struct tcphdr, check));
1268
1269 swqe->tcp_end = (u16)skb->len - 1;
1270 }
1271
1272 static inline void write_udp_offset_end(struct ehea_swqe *swqe,
1273 const struct sk_buff *skb)
1274 {
1275 swqe->tcp_offset =
1276 (u8)(swqe->ip_end + 1 + offsetof(struct udphdr, check));
1277
1278 swqe->tcp_end = (u16)skb->len - 1;
1279 }
1280
1281
1282 static void write_swqe2_TSO(struct sk_buff *skb,
1283 struct ehea_swqe *swqe, u32 lkey)
1284 {
1285 struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry;
1286 u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0];
1287 int skb_data_size = skb->len - skb->data_len;
1288 int headersize;
1289 u64 tmp_addr;
1290
1291 /* Packet is TCP with TSO enabled */
1292 swqe->tx_control |= EHEA_SWQE_TSO;
1293 swqe->mss = skb_shinfo(skb)->gso_size;
1294 /* copy only eth/ip/tcp headers to immediate data and
1295 * the rest of skb->data to sg1entry
1296 */
1297 headersize = ETH_HLEN + (skb->nh.iph->ihl * 4) + (skb->h.th->doff * 4);
1298
1299 skb_data_size = skb->len - skb->data_len;
1300
1301 if (skb_data_size >= headersize) {
1302 /* copy immediate data */
1303 memcpy(imm_data, skb->data, headersize);
1304 swqe->immediate_data_length = headersize;
1305
1306 if (skb_data_size > headersize) {
1307 /* set sg1entry data */
1308 sg1entry->l_key = lkey;
1309 sg1entry->len = skb_data_size - headersize;
1310
1311 tmp_addr = (u64)(skb->data + headersize);
1312 sg1entry->vaddr = tmp_addr;
1313 swqe->descriptors++;
1314 }
1315 } else
1316 ehea_error("cannot handle fragmented headers");
1317 }
1318
1319 static void write_swqe2_nonTSO(struct sk_buff *skb,
1320 struct ehea_swqe *swqe, u32 lkey)
1321 {
1322 int skb_data_size = skb->len - skb->data_len;
1323 u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0];
1324 struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry;
1325 u64 tmp_addr;
1326
1327 /* Packet is any nonTSO type
1328 *
1329 * Copy as much as possible skb->data to immediate data and
1330 * the rest to sg1entry
1331 */
1332 if (skb_data_size >= SWQE2_MAX_IMM) {
1333 /* copy immediate data */
1334 memcpy(imm_data, skb->data, SWQE2_MAX_IMM);
1335
1336 swqe->immediate_data_length = SWQE2_MAX_IMM;
1337
1338 if (skb_data_size > SWQE2_MAX_IMM) {
1339 /* copy sg1entry data */
1340 sg1entry->l_key = lkey;
1341 sg1entry->len = skb_data_size - SWQE2_MAX_IMM;
1342 tmp_addr = (u64)(skb->data + SWQE2_MAX_IMM);
1343 sg1entry->vaddr = tmp_addr;
1344 swqe->descriptors++;
1345 }
1346 } else {
1347 memcpy(imm_data, skb->data, skb_data_size);
1348 swqe->immediate_data_length = skb_data_size;
1349 }
1350 }
1351
1352 static inline void write_swqe2_data(struct sk_buff *skb, struct net_device *dev,
1353 struct ehea_swqe *swqe, u32 lkey)
1354 {
1355 struct ehea_vsgentry *sg_list, *sg1entry, *sgentry;
1356 skb_frag_t *frag;
1357 int nfrags, sg1entry_contains_frag_data, i;
1358 u64 tmp_addr;
1359
1360 nfrags = skb_shinfo(skb)->nr_frags;
1361 sg1entry = &swqe->u.immdata_desc.sg_entry;
1362 sg_list = (struct ehea_vsgentry*)&swqe->u.immdata_desc.sg_list;
1363 swqe->descriptors = 0;
1364 sg1entry_contains_frag_data = 0;
1365
1366 if ((dev->features & NETIF_F_TSO) && skb_shinfo(skb)->gso_size)
1367 write_swqe2_TSO(skb, swqe, lkey);
1368 else
1369 write_swqe2_nonTSO(skb, swqe, lkey);
1370
1371 /* write descriptors */
1372 if (nfrags > 0) {
1373 if (swqe->descriptors == 0) {
1374 /* sg1entry not yet used */
1375 frag = &skb_shinfo(skb)->frags[0];
1376
1377 /* copy sg1entry data */
1378 sg1entry->l_key = lkey;
1379 sg1entry->len = frag->size;
1380 tmp_addr = (u64)(page_address(frag->page)
1381 + frag->page_offset);
1382 sg1entry->vaddr = tmp_addr;
1383 swqe->descriptors++;
1384 sg1entry_contains_frag_data = 1;
1385 }
1386
1387 for (i = sg1entry_contains_frag_data; i < nfrags; i++) {
1388
1389 frag = &skb_shinfo(skb)->frags[i];
1390 sgentry = &sg_list[i - sg1entry_contains_frag_data];
1391
1392 sgentry->l_key = lkey;
1393 sgentry->len = frag->size;
1394
1395 tmp_addr = (u64)(page_address(frag->page)
1396 + frag->page_offset);
1397 sgentry->vaddr = tmp_addr;
1398 swqe->descriptors++;
1399 }
1400 }
1401 }
1402
1403 static int ehea_broadcast_reg_helper(struct ehea_port *port, u32 hcallid)
1404 {
1405 int ret = 0;
1406 u64 hret;
1407 u8 reg_type;
1408
1409 /* De/Register untagged packets */
1410 reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_UNTAGGED;
1411 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1412 port->logical_port_id,
1413 reg_type, port->mac_addr, 0, hcallid);
1414 if (hret != H_SUCCESS) {
1415 ehea_error("reg_dereg_bcmc failed (tagged)");
1416 ret = -EIO;
1417 goto out_herr;
1418 }
1419
1420 /* De/Register VLAN packets */
1421 reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_VLANID_ALL;
1422 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1423 port->logical_port_id,
1424 reg_type, port->mac_addr, 0, hcallid);
1425 if (hret != H_SUCCESS) {
1426 ehea_error("reg_dereg_bcmc failed (vlan)");
1427 ret = -EIO;
1428 }
1429 out_herr:
1430 return ret;
1431 }
1432
1433 static int ehea_set_mac_addr(struct net_device *dev, void *sa)
1434 {
1435 struct ehea_port *port = netdev_priv(dev);
1436 struct sockaddr *mac_addr = sa;
1437 struct hcp_ehea_port_cb0 *cb0;
1438 int ret;
1439 u64 hret;
1440
1441 if (!is_valid_ether_addr(mac_addr->sa_data)) {
1442 ret = -EADDRNOTAVAIL;
1443 goto out;
1444 }
1445
1446 cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL);
1447 if (!cb0) {
1448 ehea_error("no mem for cb0");
1449 ret = -ENOMEM;
1450 goto out;
1451 }
1452
1453 memcpy(&(cb0->port_mac_addr), &(mac_addr->sa_data[0]), ETH_ALEN);
1454
1455 cb0->port_mac_addr = cb0->port_mac_addr >> 16;
1456
1457 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1458 port->logical_port_id, H_PORT_CB0,
1459 EHEA_BMASK_SET(H_PORT_CB0_MAC, 1), cb0);
1460 if (hret != H_SUCCESS) {
1461 ret = -EIO;
1462 goto out_free;
1463 }
1464
1465 memcpy(dev->dev_addr, mac_addr->sa_data, dev->addr_len);
1466
1467 /* Deregister old MAC in pHYP */
1468 ret = ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
1469 if (ret)
1470 goto out_free;
1471
1472 port->mac_addr = cb0->port_mac_addr << 16;
1473
1474 /* Register new MAC in pHYP */
1475 ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
1476 if (ret)
1477 goto out_free;
1478
1479 ret = 0;
1480 out_free:
1481 kfree(cb0);
1482 out:
1483 return ret;
1484 }
1485
1486 static void ehea_promiscuous_error(u64 hret, int enable)
1487 {
1488 ehea_info("Hypervisor denied %sabling promiscuous mode.%s",
1489 enable == 1 ? "en" : "dis",
1490 hret != H_AUTHORITY ? "" : " Another partition owning a "
1491 "logical port on the same physical port might have altered "
1492 "promiscuous mode first.");
1493 }
1494
1495 static void ehea_promiscuous(struct net_device *dev, int enable)
1496 {
1497 struct ehea_port *port = netdev_priv(dev);
1498 struct hcp_ehea_port_cb7 *cb7;
1499 u64 hret;
1500
1501 if ((enable && port->promisc) || (!enable && !port->promisc))
1502 return;
1503
1504 cb7 = kzalloc(PAGE_SIZE, GFP_ATOMIC);
1505 if (!cb7) {
1506 ehea_error("no mem for cb7");
1507 goto out;
1508 }
1509
1510 /* Modify Pxs_DUCQPN in CB7 */
1511 cb7->def_uc_qpn = enable == 1 ? port->port_res[0].qp->fw_handle : 0;
1512
1513 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1514 port->logical_port_id,
1515 H_PORT_CB7, H_PORT_CB7_DUCQPN, cb7);
1516 if (hret) {
1517 ehea_promiscuous_error(hret, enable);
1518 goto out;
1519 }
1520
1521 port->promisc = enable;
1522 out:
1523 kfree(cb7);
1524 return;
1525 }
1526
1527 static u64 ehea_multicast_reg_helper(struct ehea_port *port, u64 mc_mac_addr,
1528 u32 hcallid)
1529 {
1530 u64 hret;
1531 u8 reg_type;
1532
1533 reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST
1534 | EHEA_BCMC_UNTAGGED;
1535
1536 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1537 port->logical_port_id,
1538 reg_type, mc_mac_addr, 0, hcallid);
1539 if (hret)
1540 goto out;
1541
1542 reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST
1543 | EHEA_BCMC_VLANID_ALL;
1544
1545 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1546 port->logical_port_id,
1547 reg_type, mc_mac_addr, 0, hcallid);
1548 out:
1549 return hret;
1550 }
1551
1552 static int ehea_drop_multicast_list(struct net_device *dev)
1553 {
1554 struct ehea_port *port = netdev_priv(dev);
1555 struct ehea_mc_list *mc_entry = port->mc_list;
1556 struct list_head *pos;
1557 struct list_head *temp;
1558 int ret = 0;
1559 u64 hret;
1560
1561 list_for_each_safe(pos, temp, &(port->mc_list->list)) {
1562 mc_entry = list_entry(pos, struct ehea_mc_list, list);
1563
1564 hret = ehea_multicast_reg_helper(port, mc_entry->macaddr,
1565 H_DEREG_BCMC);
1566 if (hret) {
1567 ehea_error("failed deregistering mcast MAC");
1568 ret = -EIO;
1569 }
1570
1571 list_del(pos);
1572 kfree(mc_entry);
1573 }
1574 return ret;
1575 }
1576
1577 static void ehea_allmulti(struct net_device *dev, int enable)
1578 {
1579 struct ehea_port *port = netdev_priv(dev);
1580 u64 hret;
1581
1582 if (!port->allmulti) {
1583 if (enable) {
1584 /* Enable ALLMULTI */
1585 ehea_drop_multicast_list(dev);
1586 hret = ehea_multicast_reg_helper(port, 0, H_REG_BCMC);
1587 if (!hret)
1588 port->allmulti = 1;
1589 else
1590 ehea_error("failed enabling IFF_ALLMULTI");
1591 }
1592 } else
1593 if (!enable) {
1594 /* Disable ALLMULTI */
1595 hret = ehea_multicast_reg_helper(port, 0, H_DEREG_BCMC);
1596 if (!hret)
1597 port->allmulti = 0;
1598 else
1599 ehea_error("failed disabling IFF_ALLMULTI");
1600 }
1601 }
1602
1603 static void ehea_add_multicast_entry(struct ehea_port* port, u8* mc_mac_addr)
1604 {
1605 struct ehea_mc_list *ehea_mcl_entry;
1606 u64 hret;
1607
1608 ehea_mcl_entry = kzalloc(sizeof(*ehea_mcl_entry), GFP_ATOMIC);
1609 if (!ehea_mcl_entry) {
1610 ehea_error("no mem for mcl_entry");
1611 return;
1612 }
1613
1614 INIT_LIST_HEAD(&ehea_mcl_entry->list);
1615
1616 memcpy(&ehea_mcl_entry->macaddr, mc_mac_addr, ETH_ALEN);
1617
1618 hret = ehea_multicast_reg_helper(port, ehea_mcl_entry->macaddr,
1619 H_REG_BCMC);
1620 if (!hret)
1621 list_add(&ehea_mcl_entry->list, &port->mc_list->list);
1622 else {
1623 ehea_error("failed registering mcast MAC");
1624 kfree(ehea_mcl_entry);
1625 }
1626 }
1627
1628 static void ehea_set_multicast_list(struct net_device *dev)
1629 {
1630 struct ehea_port *port = netdev_priv(dev);
1631 struct dev_mc_list *k_mcl_entry;
1632 int ret, i;
1633
1634 if (dev->flags & IFF_PROMISC) {
1635 ehea_promiscuous(dev, 1);
1636 return;
1637 }
1638 ehea_promiscuous(dev, 0);
1639
1640 if (dev->flags & IFF_ALLMULTI) {
1641 ehea_allmulti(dev, 1);
1642 return;
1643 }
1644 ehea_allmulti(dev, 0);
1645
1646 if (dev->mc_count) {
1647 ret = ehea_drop_multicast_list(dev);
1648 if (ret) {
1649 /* Dropping the current multicast list failed.
1650 * Enabling ALL_MULTI is the best we can do.
1651 */
1652 ehea_allmulti(dev, 1);
1653 }
1654
1655 if (dev->mc_count > port->adapter->max_mc_mac) {
1656 ehea_info("Mcast registration limit reached (0x%lx). "
1657 "Use ALLMULTI!",
1658 port->adapter->max_mc_mac);
1659 goto out;
1660 }
1661
1662 for (i = 0, k_mcl_entry = dev->mc_list;
1663 i < dev->mc_count;
1664 i++, k_mcl_entry = k_mcl_entry->next) {
1665 ehea_add_multicast_entry(port, k_mcl_entry->dmi_addr);
1666 }
1667 }
1668 out:
1669 return;
1670 }
1671
1672 static int ehea_change_mtu(struct net_device *dev, int new_mtu)
1673 {
1674 if ((new_mtu < 68) || (new_mtu > EHEA_MAX_PACKET_SIZE))
1675 return -EINVAL;
1676 dev->mtu = new_mtu;
1677 return 0;
1678 }
1679
1680 static void ehea_xmit2(struct sk_buff *skb, struct net_device *dev,
1681 struct ehea_swqe *swqe, u32 lkey)
1682 {
1683 if (skb->protocol == htons(ETH_P_IP)) {
1684 /* IPv4 */
1685 swqe->tx_control |= EHEA_SWQE_CRC
1686 | EHEA_SWQE_IP_CHECKSUM
1687 | EHEA_SWQE_TCP_CHECKSUM
1688 | EHEA_SWQE_IMM_DATA_PRESENT
1689 | EHEA_SWQE_DESCRIPTORS_PRESENT;
1690
1691 write_ip_start_end(swqe, skb);
1692
1693 if (skb->nh.iph->protocol == IPPROTO_UDP) {
1694 if ((skb->nh.iph->frag_off & IP_MF) ||
1695 (skb->nh.iph->frag_off & IP_OFFSET))
1696 /* IP fragment, so don't change cs */
1697 swqe->tx_control &= ~EHEA_SWQE_TCP_CHECKSUM;
1698 else
1699 write_udp_offset_end(swqe, skb);
1700
1701 } else if (skb->nh.iph->protocol == IPPROTO_TCP) {
1702 write_tcp_offset_end(swqe, skb);
1703 }
1704
1705 /* icmp (big data) and ip segmentation packets (all other ip
1706 packets) do not require any special handling */
1707
1708 } else {
1709 /* Other Ethernet Protocol */
1710 swqe->tx_control |= EHEA_SWQE_CRC
1711 | EHEA_SWQE_IMM_DATA_PRESENT
1712 | EHEA_SWQE_DESCRIPTORS_PRESENT;
1713 }
1714
1715 write_swqe2_data(skb, dev, swqe, lkey);
1716 }
1717
1718 static void ehea_xmit3(struct sk_buff *skb, struct net_device *dev,
1719 struct ehea_swqe *swqe)
1720 {
1721 int nfrags = skb_shinfo(skb)->nr_frags;
1722 u8 *imm_data = &swqe->u.immdata_nodesc.immediate_data[0];
1723 skb_frag_t *frag;
1724 int i;
1725
1726 if (skb->protocol == htons(ETH_P_IP)) {
1727 /* IPv4 */
1728 write_ip_start_end(swqe, skb);
1729
1730 if (skb->nh.iph->protocol == IPPROTO_TCP) {
1731 swqe->tx_control |= EHEA_SWQE_CRC
1732 | EHEA_SWQE_IP_CHECKSUM
1733 | EHEA_SWQE_TCP_CHECKSUM
1734 | EHEA_SWQE_IMM_DATA_PRESENT;
1735
1736 write_tcp_offset_end(swqe, skb);
1737
1738 } else if (skb->nh.iph->protocol == IPPROTO_UDP) {
1739 if ((skb->nh.iph->frag_off & IP_MF) ||
1740 (skb->nh.iph->frag_off & IP_OFFSET))
1741 /* IP fragment, so don't change cs */
1742 swqe->tx_control |= EHEA_SWQE_CRC
1743 | EHEA_SWQE_IMM_DATA_PRESENT;
1744 else {
1745 swqe->tx_control |= EHEA_SWQE_CRC
1746 | EHEA_SWQE_IP_CHECKSUM
1747 | EHEA_SWQE_TCP_CHECKSUM
1748 | EHEA_SWQE_IMM_DATA_PRESENT;
1749
1750 write_udp_offset_end(swqe, skb);
1751 }
1752 } else {
1753 /* icmp (big data) and
1754 ip segmentation packets (all other ip packets) */
1755 swqe->tx_control |= EHEA_SWQE_CRC
1756 | EHEA_SWQE_IP_CHECKSUM
1757 | EHEA_SWQE_IMM_DATA_PRESENT;
1758 }
1759 } else {
1760 /* Other Ethernet Protocol */
1761 swqe->tx_control |= EHEA_SWQE_CRC | EHEA_SWQE_IMM_DATA_PRESENT;
1762 }
1763 /* copy (immediate) data */
1764 if (nfrags == 0) {
1765 /* data is in a single piece */
1766 memcpy(imm_data, skb->data, skb->len);
1767 } else {
1768 /* first copy data from the skb->data buffer ... */
1769 memcpy(imm_data, skb->data, skb->len - skb->data_len);
1770 imm_data += skb->len - skb->data_len;
1771
1772 /* ... then copy data from the fragments */
1773 for (i = 0; i < nfrags; i++) {
1774 frag = &skb_shinfo(skb)->frags[i];
1775 memcpy(imm_data,
1776 page_address(frag->page) + frag->page_offset,
1777 frag->size);
1778 imm_data += frag->size;
1779 }
1780 }
1781 swqe->immediate_data_length = skb->len;
1782 dev_kfree_skb(skb);
1783 }
1784
1785 static int ehea_start_xmit(struct sk_buff *skb, struct net_device *dev)
1786 {
1787 struct ehea_port *port = netdev_priv(dev);
1788 struct ehea_swqe *swqe;
1789 unsigned long flags;
1790 u32 lkey;
1791 int swqe_index;
1792 struct ehea_port_res *pr = &port->port_res[0];
1793
1794 spin_lock(&pr->xmit_lock);
1795
1796 swqe = ehea_get_swqe(pr->qp, &swqe_index);
1797 memset(swqe, 0, SWQE_HEADER_SIZE);
1798 atomic_dec(&pr->swqe_avail);
1799
1800 if (skb->len <= SWQE3_MAX_IMM) {
1801 u32 sig_iv = port->sig_comp_iv;
1802 u32 swqe_num = pr->swqe_id_counter;
1803 ehea_xmit3(skb, dev, swqe);
1804 swqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE3_TYPE)
1805 | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, swqe_num);
1806 if (pr->swqe_ll_count >= (sig_iv - 1)) {
1807 swqe->wr_id |= EHEA_BMASK_SET(EHEA_WR_ID_REFILL,
1808 sig_iv);
1809 swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
1810 pr->swqe_ll_count = 0;
1811 } else
1812 pr->swqe_ll_count += 1;
1813 } else {
1814 swqe->wr_id =
1815 EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE2_TYPE)
1816 | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, pr->swqe_id_counter)
1817 | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, pr->sq_skba.index);
1818 pr->sq_skba.arr[pr->sq_skba.index] = skb;
1819
1820 pr->sq_skba.index++;
1821 pr->sq_skba.index &= (pr->sq_skba.len - 1);
1822
1823 lkey = pr->send_mr.lkey;
1824 ehea_xmit2(skb, dev, swqe, lkey);
1825
1826 if (pr->swqe_count >= (EHEA_SIG_IV_LONG - 1)) {
1827 swqe->wr_id |= EHEA_BMASK_SET(EHEA_WR_ID_REFILL,
1828 EHEA_SIG_IV_LONG);
1829 swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
1830 pr->swqe_count = 0;
1831 } else
1832 pr->swqe_count += 1;
1833 }
1834 pr->swqe_id_counter += 1;
1835
1836 if (port->vgrp && vlan_tx_tag_present(skb)) {
1837 swqe->tx_control |= EHEA_SWQE_VLAN_INSERT;
1838 swqe->vlan_tag = vlan_tx_tag_get(skb);
1839 }
1840
1841 if (netif_msg_tx_queued(port)) {
1842 ehea_info("post swqe on QP %d", pr->qp->init_attr.qp_nr);
1843 ehea_dump(swqe, 512, "swqe");
1844 }
1845
1846 ehea_post_swqe(pr->qp, swqe);
1847 pr->tx_packets++;
1848
1849 if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) {
1850 spin_lock_irqsave(&pr->netif_queue, flags);
1851 if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) {
1852 netif_stop_queue(dev);
1853 pr->queue_stopped = 1;
1854 }
1855 spin_unlock_irqrestore(&pr->netif_queue, flags);
1856 }
1857 dev->trans_start = jiffies;
1858 spin_unlock(&pr->xmit_lock);
1859
1860 return NETDEV_TX_OK;
1861 }
1862
1863 static void ehea_vlan_rx_register(struct net_device *dev,
1864 struct vlan_group *grp)
1865 {
1866 struct ehea_port *port = netdev_priv(dev);
1867 struct ehea_adapter *adapter = port->adapter;
1868 struct hcp_ehea_port_cb1 *cb1;
1869 u64 hret;
1870
1871 port->vgrp = grp;
1872
1873 cb1 = kzalloc(PAGE_SIZE, GFP_KERNEL);
1874 if (!cb1) {
1875 ehea_error("no mem for cb1");
1876 goto out;
1877 }
1878
1879 if (grp)
1880 memset(cb1->vlan_filter, 0, sizeof(cb1->vlan_filter));
1881 else
1882 memset(cb1->vlan_filter, 0xFF, sizeof(cb1->vlan_filter));
1883
1884 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
1885 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
1886 if (hret != H_SUCCESS)
1887 ehea_error("modify_ehea_port failed");
1888
1889 kfree(cb1);
1890 out:
1891 return;
1892 }
1893
1894 static void ehea_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
1895 {
1896 struct ehea_port *port = netdev_priv(dev);
1897 struct ehea_adapter *adapter = port->adapter;
1898 struct hcp_ehea_port_cb1 *cb1;
1899 int index;
1900 u64 hret;
1901
1902 cb1 = kzalloc(PAGE_SIZE, GFP_KERNEL);
1903 if (!cb1) {
1904 ehea_error("no mem for cb1");
1905 goto out;
1906 }
1907
1908 hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
1909 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
1910 if (hret != H_SUCCESS) {
1911 ehea_error("query_ehea_port failed");
1912 goto out;
1913 }
1914
1915 index = (vid / 64);
1916 cb1->vlan_filter[index] |= ((u64)(1 << (vid & 0x3F)));
1917
1918 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
1919 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
1920 if (hret != H_SUCCESS)
1921 ehea_error("modify_ehea_port failed");
1922 out:
1923 kfree(cb1);
1924 return;
1925 }
1926
1927 static void ehea_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
1928 {
1929 struct ehea_port *port = netdev_priv(dev);
1930 struct ehea_adapter *adapter = port->adapter;
1931 struct hcp_ehea_port_cb1 *cb1;
1932 int index;
1933 u64 hret;
1934
1935 if (port->vgrp)
1936 port->vgrp->vlan_devices[vid] = NULL;
1937
1938 cb1 = kzalloc(PAGE_SIZE, GFP_KERNEL);
1939 if (!cb1) {
1940 ehea_error("no mem for cb1");
1941 goto out;
1942 }
1943
1944 hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
1945 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
1946 if (hret != H_SUCCESS) {
1947 ehea_error("query_ehea_port failed");
1948 goto out;
1949 }
1950
1951 index = (vid / 64);
1952 cb1->vlan_filter[index] &= ~((u64)(1 << (vid & 0x3F)));
1953
1954 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
1955 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
1956 if (hret != H_SUCCESS)
1957 ehea_error("modify_ehea_port failed");
1958 out:
1959 kfree(cb1);
1960 return;
1961 }
1962
1963 int ehea_activate_qp(struct ehea_adapter *adapter, struct ehea_qp *qp)
1964 {
1965 int ret = -EIO;
1966 u64 hret;
1967 u16 dummy16 = 0;
1968 u64 dummy64 = 0;
1969 struct hcp_modify_qp_cb0* cb0;
1970
1971 cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL);
1972 if (!cb0) {
1973 ret = -ENOMEM;
1974 goto out;
1975 }
1976
1977 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
1978 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
1979 if (hret != H_SUCCESS) {
1980 ehea_error("query_ehea_qp failed (1)");
1981 goto out;
1982 }
1983
1984 cb0->qp_ctl_reg = H_QP_CR_STATE_INITIALIZED;
1985 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
1986 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
1987 &dummy64, &dummy64, &dummy16, &dummy16);
1988 if (hret != H_SUCCESS) {
1989 ehea_error("modify_ehea_qp failed (1)");
1990 goto out;
1991 }
1992
1993 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
1994 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
1995 if (hret != H_SUCCESS) {
1996 ehea_error("query_ehea_qp failed (2)");
1997 goto out;
1998 }
1999
2000 cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_INITIALIZED;
2001 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2002 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2003 &dummy64, &dummy64, &dummy16, &dummy16);
2004 if (hret != H_SUCCESS) {
2005 ehea_error("modify_ehea_qp failed (2)");
2006 goto out;
2007 }
2008
2009 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2010 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2011 if (hret != H_SUCCESS) {
2012 ehea_error("query_ehea_qp failed (3)");
2013 goto out;
2014 }
2015
2016 cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_RDY2SND;
2017 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2018 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2019 &dummy64, &dummy64, &dummy16, &dummy16);
2020 if (hret != H_SUCCESS) {
2021 ehea_error("modify_ehea_qp failed (3)");
2022 goto out;
2023 }
2024
2025 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2026 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2027 if (hret != H_SUCCESS) {
2028 ehea_error("query_ehea_qp failed (4)");
2029 goto out;
2030 }
2031
2032 ret = 0;
2033 out:
2034 kfree(cb0);
2035 return ret;
2036 }
2037
2038 static int ehea_port_res_setup(struct ehea_port *port, int def_qps,
2039 int add_tx_qps)
2040 {
2041 int ret, i;
2042 struct port_res_cfg pr_cfg, pr_cfg_small_rx;
2043 enum ehea_eq_type eq_type = EHEA_EQ;
2044
2045 port->qp_eq = ehea_create_eq(port->adapter, eq_type,
2046 EHEA_MAX_ENTRIES_EQ, 1);
2047 if (!port->qp_eq) {
2048 ret = -EINVAL;
2049 ehea_error("ehea_create_eq failed (qp_eq)");
2050 goto out_kill_eq;
2051 }
2052
2053 pr_cfg.max_entries_rcq = rq1_entries + rq2_entries + rq3_entries;
2054 pr_cfg.max_entries_scq = sq_entries;
2055 pr_cfg.max_entries_sq = sq_entries;
2056 pr_cfg.max_entries_rq1 = rq1_entries;
2057 pr_cfg.max_entries_rq2 = rq2_entries;
2058 pr_cfg.max_entries_rq3 = rq3_entries;
2059
2060 pr_cfg_small_rx.max_entries_rcq = 1;
2061 pr_cfg_small_rx.max_entries_scq = sq_entries;
2062 pr_cfg_small_rx.max_entries_sq = sq_entries;
2063 pr_cfg_small_rx.max_entries_rq1 = 1;
2064 pr_cfg_small_rx.max_entries_rq2 = 1;
2065 pr_cfg_small_rx.max_entries_rq3 = 1;
2066
2067 for (i = 0; i < def_qps; i++) {
2068 ret = ehea_init_port_res(port, &port->port_res[i], &pr_cfg, i);
2069 if (ret)
2070 goto out_clean_pr;
2071 }
2072 for (i = def_qps; i < def_qps + add_tx_qps; i++) {
2073 ret = ehea_init_port_res(port, &port->port_res[i],
2074 &pr_cfg_small_rx, i);
2075 if (ret)
2076 goto out_clean_pr;
2077 }
2078
2079 return 0;
2080
2081 out_clean_pr:
2082 while (--i >= 0)
2083 ehea_clean_portres(port, &port->port_res[i]);
2084
2085 out_kill_eq:
2086 ehea_destroy_eq(port->qp_eq);
2087 return ret;
2088 }
2089
2090 static int ehea_clean_all_portres(struct ehea_port *port)
2091 {
2092 int ret = 0;
2093 int i;
2094
2095 for(i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
2096 ret |= ehea_clean_portres(port, &port->port_res[i]);
2097
2098 ret |= ehea_destroy_eq(port->qp_eq);
2099
2100 return ret;
2101 }
2102
2103 static int ehea_up(struct net_device *dev)
2104 {
2105 int ret, i;
2106 struct ehea_port *port = netdev_priv(dev);
2107 u64 mac_addr = 0;
2108
2109 if (port->state == EHEA_PORT_UP)
2110 return 0;
2111
2112 ret = ehea_port_res_setup(port, port->num_def_qps,
2113 port->num_add_tx_qps);
2114 if (ret) {
2115 ehea_error("port_res_failed");
2116 goto out;
2117 }
2118
2119 /* Set default QP for this port */
2120 ret = ehea_configure_port(port);
2121 if (ret) {
2122 ehea_error("ehea_configure_port failed. ret:%d", ret);
2123 goto out_clean_pr;
2124 }
2125
2126 ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
2127 if (ret) {
2128 ret = -EIO;
2129 ehea_error("out_clean_pr");
2130 goto out_clean_pr;
2131 }
2132 mac_addr = (*(u64*)dev->dev_addr) >> 16;
2133
2134 ret = ehea_reg_interrupts(dev);
2135 if (ret) {
2136 ehea_error("out_dereg_bc");
2137 goto out_dereg_bc;
2138 }
2139
2140 for(i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
2141 ret = ehea_activate_qp(port->adapter, port->port_res[i].qp);
2142 if (ret) {
2143 ehea_error("activate_qp failed");
2144 goto out_free_irqs;
2145 }
2146 }
2147
2148 for(i = 0; i < port->num_def_qps; i++) {
2149 ret = ehea_fill_port_res(&port->port_res[i]);
2150 if (ret) {
2151 ehea_error("out_free_irqs");
2152 goto out_free_irqs;
2153 }
2154 }
2155
2156 ret = 0;
2157 port->state = EHEA_PORT_UP;
2158 goto out;
2159
2160 out_free_irqs:
2161 ehea_free_interrupts(dev);
2162
2163 out_dereg_bc:
2164 ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
2165
2166 out_clean_pr:
2167 ehea_clean_all_portres(port);
2168 out:
2169 return ret;
2170 }
2171
2172 static int ehea_open(struct net_device *dev)
2173 {
2174 int ret;
2175 struct ehea_port *port = netdev_priv(dev);
2176
2177 down(&port->port_lock);
2178
2179 if (netif_msg_ifup(port))
2180 ehea_info("enabling port %s", dev->name);
2181
2182 ret = ehea_up(dev);
2183 if (!ret)
2184 netif_start_queue(dev);
2185
2186 up(&port->port_lock);
2187
2188 return ret;
2189 }
2190
2191 static int ehea_down(struct net_device *dev)
2192 {
2193 int ret, i;
2194 struct ehea_port *port = netdev_priv(dev);
2195
2196 if (port->state == EHEA_PORT_DOWN)
2197 return 0;
2198
2199 ehea_drop_multicast_list(dev);
2200 ehea_free_interrupts(dev);
2201
2202 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
2203 tasklet_kill(&port->port_res[i].send_comp_task);
2204
2205 ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
2206 ret = ehea_clean_all_portres(port);
2207 port->state = EHEA_PORT_DOWN;
2208 return ret;
2209 }
2210
2211 static int ehea_stop(struct net_device *dev)
2212 {
2213 int ret;
2214 struct ehea_port *port = netdev_priv(dev);
2215
2216 if (netif_msg_ifdown(port))
2217 ehea_info("disabling port %s", dev->name);
2218
2219 flush_workqueue(port->adapter->ehea_wq);
2220 down(&port->port_lock);
2221 netif_stop_queue(dev);
2222 ret = ehea_down(dev);
2223 up(&port->port_lock);
2224 return ret;
2225 }
2226
2227 static void ehea_reset_port(void *data)
2228 {
2229 int ret;
2230 struct net_device *dev = data;
2231 struct ehea_port *port = netdev_priv(dev);
2232
2233 port->resets++;
2234 down(&port->port_lock);
2235 netif_stop_queue(dev);
2236 netif_poll_disable(dev);
2237
2238 ret = ehea_down(dev);
2239 if (ret)
2240 ehea_error("ehea_down failed. not all resources are freed");
2241
2242 ret = ehea_up(dev);
2243 if (ret) {
2244 ehea_error("Reset device %s failed: ret=%d", dev->name, ret);
2245 goto out;
2246 }
2247
2248 if (netif_msg_timer(port))
2249 ehea_info("Device %s resetted successfully", dev->name);
2250
2251 netif_poll_enable(dev);
2252 netif_wake_queue(dev);
2253 out:
2254 up(&port->port_lock);
2255 return;
2256 }
2257
2258 static void ehea_tx_watchdog(struct net_device *dev)
2259 {
2260 struct ehea_port *port = netdev_priv(dev);
2261
2262 if (netif_carrier_ok(dev))
2263 queue_work(port->adapter->ehea_wq, &port->reset_task);
2264 }
2265
2266 int ehea_sense_adapter_attr(struct ehea_adapter *adapter)
2267 {
2268 struct hcp_query_ehea *cb;
2269 u64 hret;
2270 int ret;
2271
2272 cb = kzalloc(PAGE_SIZE, GFP_KERNEL);
2273 if (!cb) {
2274 ret = -ENOMEM;
2275 goto out;
2276 }
2277
2278 hret = ehea_h_query_ehea(adapter->handle, cb);
2279
2280 if (hret != H_SUCCESS) {
2281 ret = -EIO;
2282 goto out_herr;
2283 }
2284
2285 adapter->num_ports = cb->num_ports;
2286 adapter->max_mc_mac = cb->max_mc_mac - 1;
2287 ret = 0;
2288
2289 out_herr:
2290 kfree(cb);
2291 out:
2292 return ret;
2293 }
2294
2295 static int ehea_setup_single_port(struct ehea_port *port,
2296 struct device_node *dn)
2297 {
2298 int ret;
2299 u64 hret;
2300 struct net_device *dev = port->netdev;
2301 struct ehea_adapter *adapter = port->adapter;
2302 struct hcp_ehea_port_cb4 *cb4;
2303 u32 *dn_log_port_id;
2304
2305 sema_init(&port->port_lock, 1);
2306 port->state = EHEA_PORT_DOWN;
2307 port->sig_comp_iv = sq_entries / 10;
2308
2309 if (!dn) {
2310 ehea_error("bad device node: dn=%p", dn);
2311 ret = -EINVAL;
2312 goto out;
2313 }
2314
2315 port->of_dev_node = dn;
2316
2317 /* Determine logical port id */
2318 dn_log_port_id = (u32*)get_property(dn, "ibm,hea-port-no", NULL);
2319
2320 if (!dn_log_port_id) {
2321 ehea_error("bad device node: dn_log_port_id=%p",
2322 dn_log_port_id);
2323 ret = -EINVAL;
2324 goto out;
2325 }
2326 port->logical_port_id = *dn_log_port_id;
2327
2328 port->mc_list = kzalloc(sizeof(struct ehea_mc_list), GFP_KERNEL);
2329 if (!port->mc_list) {
2330 ret = -ENOMEM;
2331 goto out;
2332 }
2333
2334 INIT_LIST_HEAD(&port->mc_list->list);
2335
2336 ehea_set_portspeed(port, EHEA_SPEED_AUTONEG);
2337
2338 ret = ehea_sense_port_attr(port);
2339 if (ret)
2340 goto out;
2341
2342 /* Enable Jumbo frames */
2343 cb4 = kzalloc(PAGE_SIZE, GFP_KERNEL);
2344 if (!cb4) {
2345 ehea_error("no mem for cb4");
2346 } else {
2347 cb4->jumbo_frame = 1;
2348 hret = ehea_h_modify_ehea_port(adapter->handle,
2349 port->logical_port_id,
2350 H_PORT_CB4, H_PORT_CB4_JUMBO,
2351 cb4);
2352 if (hret != H_SUCCESS) {
2353 ehea_info("Jumbo frames not activated");
2354 }
2355 kfree(cb4);
2356 }
2357
2358 /* initialize net_device structure */
2359 SET_MODULE_OWNER(dev);
2360
2361 memcpy(dev->dev_addr, &port->mac_addr, ETH_ALEN);
2362
2363 dev->open = ehea_open;
2364 dev->poll = ehea_poll;
2365 dev->weight = 64;
2366 dev->stop = ehea_stop;
2367 dev->hard_start_xmit = ehea_start_xmit;
2368 dev->get_stats = ehea_get_stats;
2369 dev->set_multicast_list = ehea_set_multicast_list;
2370 dev->set_mac_address = ehea_set_mac_addr;
2371 dev->change_mtu = ehea_change_mtu;
2372 dev->vlan_rx_register = ehea_vlan_rx_register;
2373 dev->vlan_rx_add_vid = ehea_vlan_rx_add_vid;
2374 dev->vlan_rx_kill_vid = ehea_vlan_rx_kill_vid;
2375 dev->features = NETIF_F_SG | NETIF_F_FRAGLIST | NETIF_F_TSO
2376 | NETIF_F_HIGHDMA | NETIF_F_HW_CSUM | NETIF_F_HW_VLAN_TX
2377 | NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_FILTER
2378 | NETIF_F_LLTX;
2379 dev->tx_timeout = &ehea_tx_watchdog;
2380 dev->watchdog_timeo = EHEA_WATCH_DOG_TIMEOUT;
2381
2382 INIT_WORK(&port->reset_task, ehea_reset_port, dev);
2383
2384 ehea_set_ethtool_ops(dev);
2385
2386 ret = register_netdev(dev);
2387 if (ret) {
2388 ehea_error("register_netdev failed. ret=%d", ret);
2389 goto out_free;
2390 }
2391
2392 port->netdev = dev;
2393 ret = 0;
2394 goto out;
2395
2396 out_free:
2397 kfree(port->mc_list);
2398 out:
2399 return ret;
2400 }
2401
2402 static int ehea_setup_ports(struct ehea_adapter *adapter)
2403 {
2404 int ret;
2405 int port_setup_ok = 0;
2406 struct ehea_port *port;
2407 struct device_node *dn = NULL;
2408 struct net_device *dev;
2409 int i;
2410
2411 /* get port properties for all ports */
2412 for (i = 0; i < adapter->num_ports; i++) {
2413
2414 if (adapter->port[i])
2415 continue; /* port already up and running */
2416
2417 /* allocate memory for the port structures */
2418 dev = alloc_etherdev(sizeof(struct ehea_port));
2419
2420 if (!dev) {
2421 ehea_error("no mem for net_device");
2422 break;
2423 }
2424
2425 port = netdev_priv(dev);
2426 port->adapter = adapter;
2427 port->netdev = dev;
2428 adapter->port[i] = port;
2429 port->msg_enable = netif_msg_init(msg_level, EHEA_MSG_DEFAULT);
2430
2431 dn = of_find_node_by_name(dn, "ethernet");
2432 ret = ehea_setup_single_port(port, dn);
2433 if (ret) {
2434 /* Free mem for this port struct. The others will be
2435 processed on rollback */
2436 free_netdev(dev);
2437 adapter->port[i] = NULL;
2438 ehea_error("eHEA port %d setup failed, ret=%d", i, ret);
2439 }
2440 }
2441
2442 of_node_put(dn);
2443
2444 /* Check for succesfully set up ports */
2445 for (i = 0; i < adapter->num_ports; i++)
2446 if (adapter->port[i])
2447 port_setup_ok++;
2448
2449 if (port_setup_ok)
2450 ret = 0; /* At least some ports are setup correctly */
2451 else
2452 ret = -EINVAL;
2453
2454 return ret;
2455 }
2456
2457 static int __devinit ehea_probe(struct ibmebus_dev *dev,
2458 const struct of_device_id *id)
2459 {
2460 struct ehea_adapter *adapter;
2461 u64 *adapter_handle;
2462 int ret;
2463
2464 adapter = kzalloc(sizeof(*adapter), GFP_KERNEL);
2465 if (!adapter) {
2466 ret = -ENOMEM;
2467 dev_err(&dev->ofdev.dev, "no mem for ehea_adapter\n");
2468 goto out;
2469 }
2470
2471 adapter_handle = (u64*)get_property(dev->ofdev.node, "ibm,hea-handle",
2472 NULL);
2473 if (!adapter_handle) {
2474 dev_err(&dev->ofdev.dev, "failed getting handle for adapter"
2475 " '%s'\n", dev->ofdev.node->full_name);
2476 ret = -ENODEV;
2477 goto out_free_ad;
2478 }
2479
2480 adapter->handle = *adapter_handle;
2481 adapter->pd = EHEA_PD_ID;
2482
2483 dev->ofdev.dev.driver_data = adapter;
2484
2485 ret = ehea_reg_mr_adapter(adapter);
2486 if (ret) {
2487 dev_err(&dev->ofdev.dev, "reg_mr_adapter failed\n");
2488 goto out_free_ad;
2489 }
2490
2491 /* initialize adapter and ports */
2492 /* get adapter properties */
2493 ret = ehea_sense_adapter_attr(adapter);
2494 if (ret) {
2495 dev_err(&dev->ofdev.dev, "sense_adapter_attr failed: %d", ret);
2496 goto out_free_res;
2497 }
2498 dev_info(&dev->ofdev.dev, "%d eHEA ports found\n", adapter->num_ports);
2499
2500 adapter->neq = ehea_create_eq(adapter,
2501 EHEA_NEQ, EHEA_MAX_ENTRIES_EQ, 1);
2502 if (!adapter->neq) {
2503 dev_err(&dev->ofdev.dev, "NEQ creation failed");
2504 goto out_free_res;
2505 }
2506
2507 tasklet_init(&adapter->neq_tasklet, ehea_neq_tasklet,
2508 (unsigned long)adapter);
2509
2510 ret = ibmebus_request_irq(NULL, adapter->neq->attr.ist1,
2511 ehea_interrupt_neq, SA_INTERRUPT,
2512 "ehea_neq", adapter);
2513 if (ret) {
2514 dev_err(&dev->ofdev.dev, "requesting NEQ IRQ failed");
2515 goto out_kill_eq;
2516 }
2517
2518 adapter->ehea_wq = create_workqueue("ehea_wq");
2519 if (!adapter->ehea_wq)
2520 goto out_free_irq;
2521
2522 ret = ehea_setup_ports(adapter);
2523 if (ret) {
2524 dev_err(&dev->ofdev.dev, "setup_ports failed");
2525 goto out_kill_wq;
2526 }
2527
2528 ret = 0;
2529 goto out;
2530
2531 out_kill_wq:
2532 destroy_workqueue(adapter->ehea_wq);
2533
2534 out_free_irq:
2535 ibmebus_free_irq(NULL, adapter->neq->attr.ist1, adapter);
2536
2537 out_kill_eq:
2538 ehea_destroy_eq(adapter->neq);
2539
2540 out_free_res:
2541 ehea_h_free_resource(adapter->handle, adapter->mr.handle);
2542
2543 out_free_ad:
2544 kfree(adapter);
2545 out:
2546 return ret;
2547 }
2548
2549 static void ehea_shutdown_single_port(struct ehea_port *port)
2550 {
2551 unregister_netdev(port->netdev);
2552 kfree(port->mc_list);
2553 free_netdev(port->netdev);
2554 }
2555
2556 static int __devexit ehea_remove(struct ibmebus_dev *dev)
2557 {
2558 struct ehea_adapter *adapter = dev->ofdev.dev.driver_data;
2559 u64 hret;
2560 int i;
2561
2562 for (i = 0; i < adapter->num_ports; i++)
2563 if (adapter->port[i]) {
2564 ehea_shutdown_single_port(adapter->port[i]);
2565 adapter->port[i] = NULL;
2566 }
2567 destroy_workqueue(adapter->ehea_wq);
2568
2569 ibmebus_free_irq(NULL, adapter->neq->attr.ist1, adapter);
2570
2571 ehea_destroy_eq(adapter->neq);
2572
2573 hret = ehea_h_free_resource(adapter->handle, adapter->mr.handle);
2574 if (hret) {
2575 dev_err(&dev->ofdev.dev, "free_resource_mr failed");
2576 return -EIO;
2577 }
2578 kfree(adapter);
2579 return 0;
2580 }
2581
2582 static int check_module_parm(void)
2583 {
2584 int ret = 0;
2585
2586 if ((rq1_entries < EHEA_MIN_ENTRIES_QP) ||
2587 (rq1_entries > EHEA_MAX_ENTRIES_RQ1)) {
2588 ehea_info("Bad parameter: rq1_entries");
2589 ret = -EINVAL;
2590 }
2591 if ((rq2_entries < EHEA_MIN_ENTRIES_QP) ||
2592 (rq2_entries > EHEA_MAX_ENTRIES_RQ2)) {
2593 ehea_info("Bad parameter: rq2_entries");
2594 ret = -EINVAL;
2595 }
2596 if ((rq3_entries < EHEA_MIN_ENTRIES_QP) ||
2597 (rq3_entries > EHEA_MAX_ENTRIES_RQ3)) {
2598 ehea_info("Bad parameter: rq3_entries");
2599 ret = -EINVAL;
2600 }
2601 if ((sq_entries < EHEA_MIN_ENTRIES_QP) ||
2602 (sq_entries > EHEA_MAX_ENTRIES_SQ)) {
2603 ehea_info("Bad parameter: sq_entries");
2604 ret = -EINVAL;
2605 }
2606
2607 return ret;
2608 }
2609
2610 static struct of_device_id ehea_device_table[] = {
2611 {
2612 .name = "lhea",
2613 .compatible = "IBM,lhea",
2614 },
2615 {},
2616 };
2617
2618 static struct ibmebus_driver ehea_driver = {
2619 .name = "ehea",
2620 .id_table = ehea_device_table,
2621 .probe = ehea_probe,
2622 .remove = ehea_remove,
2623 };
2624
2625 int __init ehea_module_init(void)
2626 {
2627 int ret;
2628
2629 printk(KERN_INFO "IBM eHEA ethernet device driver (Release %s)\n",
2630 DRV_VERSION);
2631
2632 ret = check_module_parm();
2633 if (ret)
2634 goto out;
2635 ret = ibmebus_register_driver(&ehea_driver);
2636 if (ret)
2637 ehea_error("failed registering eHEA device driver on ebus");
2638
2639 out:
2640 return ret;
2641 }
2642
2643 static void __exit ehea_module_exit(void)
2644 {
2645 ibmebus_unregister_driver(&ehea_driver);
2646 }
2647
2648 module_init(ehea_module_init);
2649 module_exit(ehea_module_exit);
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