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ehea: fix for sysfs entries
[net-next-2.6.git] / drivers / net / ehea / ehea_main.c
CommitLineData
7a291083
JBT		 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
43MODULE_LICENSE("GPL");
44MODULE_AUTHOR("Christoph Raisch <raisch@de.ibm.com>");
45MODULE_DESCRIPTION("IBM eServer HEA Driver");
46MODULE_VERSION(DRV_VERSION);
47
48
49static int msg_level = -1;
50static int rq1_entries = EHEA_DEF_ENTRIES_RQ1;
51static int rq2_entries = EHEA_DEF_ENTRIES_RQ2;
52static int rq3_entries = EHEA_DEF_ENTRIES_RQ3;
53static int sq_entries = EHEA_DEF_ENTRIES_SQ;
18604c54
JBT		 54static int use_mcs = 0;
55static int num_tx_qps = EHEA_NUM_TX_QP;
7a291083
JBT		 56
57module_param(msg_level, int, 0);
58module_param(rq1_entries, int, 0);
59module_param(rq2_entries, int, 0);
60module_param(rq3_entries, int, 0);
61module_param(sq_entries, int, 0);
18604c54
JBT		 62module_param(use_mcs, int, 0);
63module_param(num_tx_qps, int, 0);
7a291083 64
18604c54 65MODULE_PARM_DESC(num_tx_qps, "Number of TX-QPS");
7a291083
JBT		 66MODULE_PARM_DESC(msg_level, "msg_level");
67MODULE_PARM_DESC(rq3_entries, "Number of entries for Receive Queue 3 "
68 "[2^x - 1], x = [6..14]. Default = "
69 __MODULE_STRING(EHEA_DEF_ENTRIES_RQ3) ")");
70MODULE_PARM_DESC(rq2_entries, "Number of entries for Receive Queue 2 "
71 "[2^x - 1], x = [6..14]. Default = "
72 __MODULE_STRING(EHEA_DEF_ENTRIES_RQ2) ")");
73MODULE_PARM_DESC(rq1_entries, "Number of entries for Receive Queue 1 "
74 "[2^x - 1], x = [6..14]. Default = "
75 __MODULE_STRING(EHEA_DEF_ENTRIES_RQ1) ")");
76MODULE_PARM_DESC(sq_entries, " Number of entries for the Send Queue "
77 "[2^x - 1], x = [6..14]. Default = "
78 __MODULE_STRING(EHEA_DEF_ENTRIES_SQ) ")");
18604c54 79MODULE_PARM_DESC(use_mcs, " 0:NAPI, 1:Multiple receive queues, Default = 1 ");
7a291083 80
d1dea38d
TK		 81static int port_name_cnt = 0;
82
83static int __devinit ehea_probe_adapter(struct ibmebus_dev *dev,
84 const struct of_device_id *id);
85
86static int __devexit ehea_remove(struct ibmebus_dev *dev);
87
88static struct of_device_id ehea_device_table[] = {
89 {
90 .name = "lhea",
91 .compatible = "IBM,lhea",
92 },
93 {},
94};
95
96static struct ibmebus_driver ehea_driver = {
97 .name = "ehea",
98 .id_table = ehea_device_table,
99 .probe = ehea_probe_adapter,
100 .remove = ehea_remove,
101};
102
7a291083
JBT		 103void ehea_dump(void *adr, int len, char *msg) {
104 int x;
105 unsigned char *deb = adr;
106 for (x = 0; x < len; x += 16) {
d2db9eea 107 printk(DRV_NAME " %s adr=%p ofs=%04x %016lx %016lx\n", msg,
7a291083
JBT		 108 deb, x, *((u64*)&deb[0]), *((u64*)&deb[8]));
109 deb += 16;
110 }
111}
112
113static struct net_device_stats *ehea_get_stats(struct net_device *dev)
114{
115 struct ehea_port *port = netdev_priv(dev);
116 struct net_device_stats *stats = &port->stats;
117 struct hcp_ehea_port_cb2 *cb2;
118 u64 hret, rx_packets;
119 int i;
120
121 memset(stats, 0, sizeof(*stats));
122
a1d261c5 123 cb2 = kzalloc(PAGE_SIZE, GFP_KERNEL);
7a291083
JBT		 124 if (!cb2) {
125 ehea_error("no mem for cb2");
126 goto out;
127 }
128
129 hret = ehea_h_query_ehea_port(port->adapter->handle,
130 port->logical_port_id,
131 H_PORT_CB2, H_PORT_CB2_ALL, cb2);
132 if (hret != H_SUCCESS) {
133 ehea_error("query_ehea_port failed");
134 goto out_herr;
135 }
136
137 if (netif_msg_hw(port))
138 ehea_dump(cb2, sizeof(*cb2), "net_device_stats");
139
140 rx_packets = 0;
141 for (i = 0; i < port->num_def_qps; i++)
142 rx_packets += port->port_res[i].rx_packets;
143
144 stats->tx_packets = cb2->txucp + cb2->txmcp + cb2->txbcp;
145 stats->multicast = cb2->rxmcp;
146 stats->rx_errors = cb2->rxuerr;
147 stats->rx_bytes = cb2->rxo;
148 stats->tx_bytes = cb2->txo;
149 stats->rx_packets = rx_packets;
150
151out_herr:
152 kfree(cb2);
153out:
154 return stats;
155}
156
157static void ehea_refill_rq1(struct ehea_port_res *pr, int index, int nr_of_wqes)
158{
159 struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
160 struct net_device *dev = pr->port->netdev;
161 int max_index_mask = pr->rq1_skba.len - 1;
162 int i;
163
164 if (!nr_of_wqes)
165 return;
166
167 for (i = 0; i < nr_of_wqes; i++) {
168 if (!skb_arr_rq1[index]) {
169 skb_arr_rq1[index] = netdev_alloc_skb(dev,
170 EHEA_L_PKT_SIZE);
171 if (!skb_arr_rq1[index]) {
172 ehea_error("%s: no mem for skb/%d wqes filled",
173 dev->name, i);
174 break;
175 }
176 }
177 index--;
178 index &= max_index_mask;
179 }
180 /* Ring doorbell */
181 ehea_update_rq1a(pr->qp, i);
182}
183
184static int ehea_init_fill_rq1(struct ehea_port_res *pr, int nr_rq1a)
185{
186 int ret = 0;
187 struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
188 struct net_device *dev = pr->port->netdev;
189 int i;
190
191 for (i = 0; i < pr->rq1_skba.len; i++) {
192 skb_arr_rq1[i] = netdev_alloc_skb(dev, EHEA_L_PKT_SIZE);
193 if (!skb_arr_rq1[i]) {
194 ehea_error("%s: no mem for skb/%d wqes filled",
195 dev->name, i);
196 ret = -ENOMEM;
197 goto out;
198 }
199 }
200 /* Ring doorbell */
201 ehea_update_rq1a(pr->qp, nr_rq1a);
202out:
203 return ret;
204}
205
206static int ehea_refill_rq_def(struct ehea_port_res *pr,
207 struct ehea_q_skb_arr *q_skba, int rq_nr,
208 int num_wqes, int wqe_type, int packet_size)
209{
210 struct net_device *dev = pr->port->netdev;
211 struct ehea_qp *qp = pr->qp;
212 struct sk_buff **skb_arr = q_skba->arr;
213 struct ehea_rwqe *rwqe;
214 int i, index, max_index_mask, fill_wqes;
215 int ret = 0;
216
217 fill_wqes = q_skba->os_skbs + num_wqes;
218
219 if (!fill_wqes)
220 return ret;
221
222 index = q_skba->index;
223 max_index_mask = q_skba->len - 1;
224 for (i = 0; i < fill_wqes; i++) {
225 struct sk_buff *skb = netdev_alloc_skb(dev, packet_size);
226 if (!skb) {
227 ehea_error("%s: no mem for skb/%d wqes filled",
18604c54 228 pr->port->netdev->name, i);
7a291083
JBT		 229 q_skba->os_skbs = fill_wqes - i;
230 ret = -ENOMEM;
231 break;
232 }
233 skb_reserve(skb, NET_IP_ALIGN);
234
235 skb_arr[index] = skb;
236
237 rwqe = ehea_get_next_rwqe(qp, rq_nr);
238 rwqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, wqe_type)
239 | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, index);
240 rwqe->sg_list[0].l_key = pr->recv_mr.lkey;
241 rwqe->sg_list[0].vaddr = (u64)skb->data;
242 rwqe->sg_list[0].len = packet_size;
243 rwqe->data_segments = 1;
244
245 index++;
246 index &= max_index_mask;
247 }
248 q_skba->index = index;
249
250 /* Ring doorbell */
251 iosync();
252 if (rq_nr == 2)
253 ehea_update_rq2a(pr->qp, i);
254 else
255 ehea_update_rq3a(pr->qp, i);
256
257 return ret;
258}
259
260
261static int ehea_refill_rq2(struct ehea_port_res *pr, int nr_of_wqes)
262{
263 return ehea_refill_rq_def(pr, &pr->rq2_skba, 2,
264 nr_of_wqes, EHEA_RWQE2_TYPE,
265 EHEA_RQ2_PKT_SIZE + NET_IP_ALIGN);
266}
267
268
269static int ehea_refill_rq3(struct ehea_port_res *pr, int nr_of_wqes)
270{
271 return ehea_refill_rq_def(pr, &pr->rq3_skba, 3,
272 nr_of_wqes, EHEA_RWQE3_TYPE,
273 EHEA_MAX_PACKET_SIZE + NET_IP_ALIGN);
274}
275
276static inline int ehea_check_cqe(struct ehea_cqe *cqe, int *rq_num)
277{
278 *rq_num = (cqe->type & EHEA_CQE_TYPE_RQ) >> 5;
279 if ((cqe->status & EHEA_CQE_STAT_ERR_MASK) == 0)
280 return 0;
281 if (((cqe->status & EHEA_CQE_STAT_ERR_TCP) != 0) &&
282 (cqe->header_length == 0))
283 return 0;
284 return -EINVAL;
285}
286
287static inline void ehea_fill_skb(struct net_device *dev,
288 struct sk_buff *skb, struct ehea_cqe *cqe)
289{
290 int length = cqe->num_bytes_transfered - 4; /*remove CRC */
291
292 skb_put(skb, length);
293 skb->ip_summed = CHECKSUM_UNNECESSARY;
294 skb->protocol = eth_type_trans(skb, dev);
295}
296
297static inline struct sk_buff *get_skb_by_index(struct sk_buff **skb_array,
298 int arr_len,
299 struct ehea_cqe *cqe)
300{
301 int skb_index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, cqe->wr_id);
302 struct sk_buff *skb;
303 void *pref;
304 int x;
305
306 x = skb_index + 1;
307 x &= (arr_len - 1);
308
309 pref = skb_array[x];
310 prefetchw(pref);
311 prefetchw(pref + EHEA_CACHE_LINE);
312
313 pref = (skb_array[x]->data);
314 prefetch(pref);
315 prefetch(pref + EHEA_CACHE_LINE);
316 prefetch(pref + EHEA_CACHE_LINE * 2);
317 prefetch(pref + EHEA_CACHE_LINE * 3);
318 skb = skb_array[skb_index];
319 skb_array[skb_index] = NULL;
320 return skb;
321}
322
323static inline struct sk_buff *get_skb_by_index_ll(struct sk_buff **skb_array,
324 int arr_len, int wqe_index)
325{
326 struct sk_buff *skb;
327 void *pref;
328 int x;
329
330 x = wqe_index + 1;
331 x &= (arr_len - 1);
332
333 pref = skb_array[x];
334 prefetchw(pref);
335 prefetchw(pref + EHEA_CACHE_LINE);
336
337 pref = (skb_array[x]->data);
338 prefetchw(pref);
339 prefetchw(pref + EHEA_CACHE_LINE);
340
341 skb = skb_array[wqe_index];
342 skb_array[wqe_index] = NULL;
343 return skb;
344}
345
346static int ehea_treat_poll_error(struct ehea_port_res *pr, int rq,
347 struct ehea_cqe *cqe, int *processed_rq2,
348 int *processed_rq3)
349{
350 struct sk_buff *skb;
351
acbddb59
JBT		 352 if (cqe->status & EHEA_CQE_STAT_ERR_TCP)
353 pr->p_stats.err_tcp_cksum++;
354 if (cqe->status & EHEA_CQE_STAT_ERR_IP)
355 pr->p_stats.err_ip_cksum++;
356 if (cqe->status & EHEA_CQE_STAT_ERR_CRC)
357 pr->p_stats.err_frame_crc++;
358
7a291083
JBT		 359 if (netif_msg_rx_err(pr->port)) {
360 ehea_error("CQE Error for QP %d", pr->qp->init_attr.qp_nr);
361 ehea_dump(cqe, sizeof(*cqe), "CQE");
362 }
363
364 if (rq == 2) {
365 *processed_rq2 += 1;
366 skb = get_skb_by_index(pr->rq2_skba.arr, pr->rq2_skba.len, cqe);
367 dev_kfree_skb(skb);
368 } else if (rq == 3) {
369 *processed_rq3 += 1;
370 skb = get_skb_by_index(pr->rq3_skba.arr, pr->rq3_skba.len, cqe);
371 dev_kfree_skb(skb);
372 }
373
374 if (cqe->status & EHEA_CQE_STAT_FAT_ERR_MASK) {
375 ehea_error("Critical receive error. Resetting port.");
376 queue_work(pr->port->adapter->ehea_wq, &pr->port->reset_task);
377 return 1;
378 }
379
380 return 0;
381}
382
18604c54
JBT		 383static struct ehea_cqe *ehea_proc_rwqes(struct net_device *dev,
384 struct ehea_port_res *pr,
385 int *budget)
7a291083 386{
18604c54 387 struct ehea_port *port = pr->port;
7a291083
JBT		 388 struct ehea_qp *qp = pr->qp;
389 struct ehea_cqe *cqe;
390 struct sk_buff *skb;
391 struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
392 struct sk_buff **skb_arr_rq2 = pr->rq2_skba.arr;
393 struct sk_buff **skb_arr_rq3 = pr->rq3_skba.arr;
394 int skb_arr_rq1_len = pr->rq1_skba.len;
395 int skb_arr_rq2_len = pr->rq2_skba.len;
396 int skb_arr_rq3_len = pr->rq3_skba.len;
397 int processed, processed_rq1, processed_rq2, processed_rq3;
18604c54 398 int wqe_index, last_wqe_index, rq, my_quota, port_reset;
7a291083
JBT		 399
400 processed = processed_rq1 = processed_rq2 = processed_rq3 = 0;
401 last_wqe_index = 0;
402 my_quota = min(*budget, dev->quota);
7a291083 403
7a291083
JBT		 404 cqe = ehea_poll_rq1(qp, &wqe_index);
405 while ((my_quota > 0) && cqe) {
406 ehea_inc_rq1(qp);
407 processed_rq1++;
408 processed++;
409 my_quota--;
410 if (netif_msg_rx_status(port))
411 ehea_dump(cqe, sizeof(*cqe), "CQE");
412
413 last_wqe_index = wqe_index;
414 rmb();
415 if (!ehea_check_cqe(cqe, &rq)) {
416 if (rq == 1) { /* LL RQ1 */
417 skb = get_skb_by_index_ll(skb_arr_rq1,
418 skb_arr_rq1_len,
419 wqe_index);
420 if (unlikely(!skb)) {
421 if (netif_msg_rx_err(port))
422 ehea_error("LL rq1: skb=NULL");
18604c54
JBT		 423
424 skb = netdev_alloc_skb(port->netdev,
7a291083
JBT		 425 EHEA_L_PKT_SIZE);
426 if (!skb)
427 break;
428 }
27d7ff46
ACM		 429 skb_copy_to_linear_data(skb, ((char*)cqe) + 64,
430 cqe->num_bytes_transfered - 4);
7a291083
JBT		 431 ehea_fill_skb(dev, skb, cqe);
432 } else if (rq == 2) { /* RQ2 */
433 skb = get_skb_by_index(skb_arr_rq2,
434 skb_arr_rq2_len, cqe);
435 if (unlikely(!skb)) {
436 if (netif_msg_rx_err(port))
437 ehea_error("rq2: skb=NULL");
438 break;
439 }
18604c54 440 ehea_fill_skb(port->netdev, skb, cqe);
7a291083
JBT		 441 processed_rq2++;
442 } else { /* RQ3 */
443 skb = get_skb_by_index(skb_arr_rq3,
444 skb_arr_rq3_len, cqe);
445 if (unlikely(!skb)) {
446 if (netif_msg_rx_err(port))
447 ehea_error("rq3: skb=NULL");
448 break;
449 }
18604c54 450 ehea_fill_skb(port->netdev, skb, cqe);
7a291083
JBT		 451 processed_rq3++;
452 }
453
454 if (cqe->status & EHEA_CQE_VLAN_TAG_XTRACT)
455 vlan_hwaccel_receive_skb(skb, port->vgrp,
456 cqe->vlan_tag);
457 else
458 netif_receive_skb(skb);
18604c54 459 } else {
acbddb59 460 pr->p_stats.poll_receive_errors++;
7a291083
JBT		 461 port_reset = ehea_treat_poll_error(pr, rq, cqe,
462 &processed_rq2,
463 &processed_rq3);
464 if (port_reset)
465 break;
466 }
467 cqe = ehea_poll_rq1(qp, &wqe_index);
468 }
469
7a291083 470 pr->rx_packets += processed;
18604c54 471 *budget -= processed;
7a291083
JBT		 472
473 ehea_refill_rq1(pr, last_wqe_index, processed_rq1);
474 ehea_refill_rq2(pr, processed_rq2);
475 ehea_refill_rq3(pr, processed_rq3);
476
18604c54
JBT		 477 cqe = ehea_poll_rq1(qp, &wqe_index);
478 return cqe;
7a291083
JBT		 479}
480
18604c54 481static struct ehea_cqe *ehea_proc_cqes(struct ehea_port_res *pr, int my_quota)
7a291083 482{
acbddb59 483 struct sk_buff *skb;
7a291083
JBT		 484 struct ehea_cq *send_cq = pr->send_cq;
485 struct ehea_cqe *cqe;
18604c54 486 int quota = my_quota;
7a291083
JBT		 487 int cqe_counter = 0;
488 int swqe_av = 0;
acbddb59 489 int index;
7a291083
JBT		 490 unsigned long flags;
491
18604c54
JBT		 492 cqe = ehea_poll_cq(send_cq);
493 while(cqe && (quota > 0)) {
494 ehea_inc_cq(send_cq);
495
7a291083
JBT		 496 cqe_counter++;
497 rmb();
498 if (cqe->status & EHEA_CQE_STAT_ERR_MASK) {
499 ehea_error("Send Completion Error: Resetting port");
500 if (netif_msg_tx_err(pr->port))
501 ehea_dump(cqe, sizeof(*cqe), "Send CQE");
502 queue_work(pr->port->adapter->ehea_wq,
503 &pr->port->reset_task);
504 break;
505 }
506
507 if (netif_msg_tx_done(pr->port))
508 ehea_dump(cqe, sizeof(*cqe), "CQE");
509
510 if (likely(EHEA_BMASK_GET(EHEA_WR_ID_TYPE, cqe->wr_id)
acbddb59
JBT		 511 == EHEA_SWQE2_TYPE)) {
512
513 index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, cqe->wr_id);
514 skb = pr->sq_skba.arr[index];
515 dev_kfree_skb(skb);
516 pr->sq_skba.arr[index] = NULL;
517 }
7a291083
JBT		 518
519 swqe_av += EHEA_BMASK_GET(EHEA_WR_ID_REFILL, cqe->wr_id);
520 quota--;
18604c54
JBT		 521
522 cqe = ehea_poll_cq(send_cq);
523 };
7a291083
JBT		 524
525 ehea_update_feca(send_cq, cqe_counter);
526 atomic_add(swqe_av, &pr->swqe_avail);
527
528 spin_lock_irqsave(&pr->netif_queue, flags);
18604c54 529
7a291083
JBT		 530 if (pr->queue_stopped && (atomic_read(&pr->swqe_avail)
531 >= pr->swqe_refill_th)) {
532 netif_wake_queue(pr->port->netdev);
533 pr->queue_stopped = 0;
534 }
535 spin_unlock_irqrestore(&pr->netif_queue, flags);
536
18604c54 537 return cqe;
7a291083
JBT		 538}
539
18604c54
JBT		 540#define EHEA_NAPI_POLL_NUM_BEFORE_IRQ 16
541
542static int ehea_poll(struct net_device *dev, int *budget)
7a291083 543{
18604c54
JBT		 544 struct ehea_port_res *pr = dev->priv;
545 struct ehea_cqe *cqe;
546 struct ehea_cqe *cqe_skb = NULL;
547 int force_irq, wqe_index;
548
549 cqe = ehea_poll_rq1(pr->qp, &wqe_index);
550 cqe_skb = ehea_poll_cq(pr->send_cq);
551
552 force_irq = (pr->poll_counter > EHEA_NAPI_POLL_NUM_BEFORE_IRQ);
553
554 if ((!cqe && !cqe_skb) || force_irq) {
555 pr->poll_counter = 0;
556 netif_rx_complete(dev);
557 ehea_reset_cq_ep(pr->recv_cq);
558 ehea_reset_cq_ep(pr->send_cq);
559 ehea_reset_cq_n1(pr->recv_cq);
560 ehea_reset_cq_n1(pr->send_cq);
561 cqe = ehea_poll_rq1(pr->qp, &wqe_index);
562 cqe_skb = ehea_poll_cq(pr->send_cq);
563
e542aa6b 564 if (!cqe && !cqe_skb)
18604c54
JBT		 565 return 0;
566
e542aa6b 567 if (!netif_rx_reschedule(dev, dev->quota))
18604c54
JBT		 568 return 0;
569 }
e542aa6b 570
18604c54
JBT		 571 cqe = ehea_proc_rwqes(dev, pr, budget);
572 cqe_skb = ehea_proc_cqes(pr, 300);
573
574 if (cqe || cqe_skb)
575 pr->poll_counter++;
e542aa6b 576
18604c54 577 return 1;
7a291083
JBT		 578}
579
7d12e780 580static irqreturn_t ehea_recv_irq_handler(int irq, void *param)
7a291083
JBT		 581{
582 struct ehea_port_res *pr = param;
18604c54
JBT		 583
584 netif_rx_schedule(pr->d_netdev);
585
7a291083
JBT		 586 return IRQ_HANDLED;
587}
588
7d12e780 589static irqreturn_t ehea_qp_aff_irq_handler(int irq, void *param)
7a291083
JBT		 590{
591 struct ehea_port *port = param;
592 struct ehea_eqe *eqe;
d2db9eea 593 struct ehea_qp *qp;
7a291083
JBT		 594 u32 qp_token;
595
596 eqe = ehea_poll_eq(port->qp_eq);
bb3a6449 597
7a291083 598 while (eqe) {
7a291083 599 qp_token = EHEA_BMASK_GET(EHEA_EQE_QP_TOKEN, eqe->entry);
bb3a6449
TK		 600 ehea_error("QP aff_err: entry=0x%lx, token=0x%x",
601 eqe->entry, qp_token);
d2db9eea
JBT		 602
603 qp = port->port_res[qp_token].qp;
604 ehea_error_data(port->adapter, qp->fw_handle);
bb3a6449 605 eqe = ehea_poll_eq(port->qp_eq);
7a291083
JBT		 606 }
607
d2db9eea
JBT		 608 queue_work(port->adapter->ehea_wq, &port->reset_task);
609
7a291083
JBT		 610 return IRQ_HANDLED;
611}
612
613static struct ehea_port *ehea_get_port(struct ehea_adapter *adapter,
614 int logical_port)
615{
616 int i;
617
1acf2318 618 for (i = 0; i < EHEA_MAX_PORTS; i++)
41b69c70
TK		 619 if (adapter->port[i])
620 if (adapter->port[i]->logical_port_id == logical_port)
621 return adapter->port[i];
7a291083
JBT		 622 return NULL;
623}
624
625int ehea_sense_port_attr(struct ehea_port *port)
626{
627 int ret;
628 u64 hret;
629 struct hcp_ehea_port_cb0 *cb0;
630
a1d261c5
TK		 631 cb0 = kzalloc(PAGE_SIZE, GFP_ATOMIC); /* May be called via */
632 if (!cb0) { /* ehea_neq_tasklet() */
7a291083
JBT		 633 ehea_error("no mem for cb0");
634 ret = -ENOMEM;
635 goto out;
636 }
637
638 hret = ehea_h_query_ehea_port(port->adapter->handle,
639 port->logical_port_id, H_PORT_CB0,
640 EHEA_BMASK_SET(H_PORT_CB0_ALL, 0xFFFF),
641 cb0);
642 if (hret != H_SUCCESS) {
643 ret = -EIO;
644 goto out_free;
645 }
646
647 /* MAC address */
648 port->mac_addr = cb0->port_mac_addr << 16;
649
650 if (!is_valid_ether_addr((u8*)&port->mac_addr)) {
651 ret = -EADDRNOTAVAIL;
652 goto out_free;
653 }
654
655 /* Port speed */
656 switch (cb0->port_speed) {
657 case H_SPEED_10M_H:
658 port->port_speed = EHEA_SPEED_10M;
659 port->full_duplex = 0;
660 break;
661 case H_SPEED_10M_F:
662 port->port_speed = EHEA_SPEED_10M;
663 port->full_duplex = 1;
664 break;
665 case H_SPEED_100M_H:
666 port->port_speed = EHEA_SPEED_100M;
667 port->full_duplex = 0;
668 break;
669 case H_SPEED_100M_F:
670 port->port_speed = EHEA_SPEED_100M;
671 port->full_duplex = 1;
672 break;
673 case H_SPEED_1G_F:
674 port->port_speed = EHEA_SPEED_1G;
675 port->full_duplex = 1;
676 break;
677 case H_SPEED_10G_F:
678 port->port_speed = EHEA_SPEED_10G;
679 port->full_duplex = 1;
680 break;
681 default:
682 port->port_speed = 0;
683 port->full_duplex = 0;
684 break;
685 }
686
e919b593 687 port->autoneg = 1;
18604c54 688 port->num_mcs = cb0->num_default_qps;
e919b593 689
7a291083 690 /* Number of default QPs */
18604c54
JBT		 691 if (use_mcs)
692 port->num_def_qps = cb0->num_default_qps;
693 else
694 port->num_def_qps = 1;
7a291083
JBT		 695
696 if (!port->num_def_qps) {
697 ret = -EINVAL;
698 goto out_free;
699 }
700
18604c54
JBT		 701 port->num_tx_qps = num_tx_qps;
702
703 if (port->num_def_qps >= port->num_tx_qps)
7a291083
JBT		 704 port->num_add_tx_qps = 0;
705 else
18604c54 706 port->num_add_tx_qps = port->num_tx_qps - port->num_def_qps;
7a291083
JBT		 707
708 ret = 0;
709out_free:
710 if (ret || netif_msg_probe(port))
711 ehea_dump(cb0, sizeof(*cb0), "ehea_sense_port_attr");
712 kfree(cb0);
713out:
714 return ret;
715}
716
717int ehea_set_portspeed(struct ehea_port *port, u32 port_speed)
718{
719 struct hcp_ehea_port_cb4 *cb4;
720 u64 hret;
721 int ret = 0;
722
a1d261c5 723 cb4 = kzalloc(PAGE_SIZE, GFP_KERNEL);
7a291083
JBT		 724 if (!cb4) {
725 ehea_error("no mem for cb4");
726 ret = -ENOMEM;
727 goto out;
728 }
729
730 cb4->port_speed = port_speed;
731
732 netif_carrier_off(port->netdev);
733
734 hret = ehea_h_modify_ehea_port(port->adapter->handle,
735 port->logical_port_id,
736 H_PORT_CB4, H_PORT_CB4_SPEED, cb4);
737 if (hret == H_SUCCESS) {
738 port->autoneg = port_speed == EHEA_SPEED_AUTONEG ? 1 : 0;
739
740 hret = ehea_h_query_ehea_port(port->adapter->handle,
741 port->logical_port_id,
742 H_PORT_CB4, H_PORT_CB4_SPEED,
743 cb4);
744 if (hret == H_SUCCESS) {
745 switch (cb4->port_speed) {
746 case H_SPEED_10M_H:
747 port->port_speed = EHEA_SPEED_10M;
748 port->full_duplex = 0;
749 break;
750 case H_SPEED_10M_F:
751 port->port_speed = EHEA_SPEED_10M;
752 port->full_duplex = 1;
753 break;
754 case H_SPEED_100M_H:
755 port->port_speed = EHEA_SPEED_100M;
756 port->full_duplex = 0;
757 break;
758 case H_SPEED_100M_F:
759 port->port_speed = EHEA_SPEED_100M;
760 port->full_duplex = 1;
761 break;
762 case H_SPEED_1G_F:
763 port->port_speed = EHEA_SPEED_1G;
764 port->full_duplex = 1;
765 break;
766 case H_SPEED_10G_F:
767 port->port_speed = EHEA_SPEED_10G;
768 port->full_duplex = 1;
769 break;
770 default:
771 port->port_speed = 0;
772 port->full_duplex = 0;
773 break;
774 }
775 } else {
776 ehea_error("Failed sensing port speed");
777 ret = -EIO;
778 }
779 } else {
780 if (hret == H_AUTHORITY) {
7674a588 781 ehea_info("Hypervisor denied setting port speed");
7a291083
JBT		 782 ret = -EPERM;
783 } else {
784 ret = -EIO;
785 ehea_error("Failed setting port speed");
786 }
787 }
788 netif_carrier_on(port->netdev);
789 kfree(cb4);
790out:
791 return ret;
792}
793
794static void ehea_parse_eqe(struct ehea_adapter *adapter, u64 eqe)
795{
796 int ret;
797 u8 ec;
798 u8 portnum;
799 struct ehea_port *port;
800
801 ec = EHEA_BMASK_GET(NEQE_EVENT_CODE, eqe);
802 portnum = EHEA_BMASK_GET(NEQE_PORTNUM, eqe);
803 port = ehea_get_port(adapter, portnum);
804
805 switch (ec) {
806 case EHEA_EC_PORTSTATE_CHG: /* port state change */
807
808 if (!port) {
809 ehea_error("unknown portnum %x", portnum);
810 break;
811 }
812
813 if (EHEA_BMASK_GET(NEQE_PORT_UP, eqe)) {
814 if (!netif_carrier_ok(port->netdev)) {
1e1675cc 815 ret = ehea_sense_port_attr(port);
7a291083
JBT		 816 if (ret) {
817 ehea_error("failed resensing port "
818 "attributes");
819 break;
820 }
821
822 if (netif_msg_link(port))
823 ehea_info("%s: Logical port up: %dMbps "
824 "%s Duplex",
825 port->netdev->name,
826 port->port_speed,
827 port->full_duplex ==
828 1 ? "Full" : "Half");
829
830 netif_carrier_on(port->netdev);
831 netif_wake_queue(port->netdev);
832 }
833 } else
834 if (netif_carrier_ok(port->netdev)) {
835 if (netif_msg_link(port))
836 ehea_info("%s: Logical port down",
837 port->netdev->name);
838 netif_carrier_off(port->netdev);
839 netif_stop_queue(port->netdev);
840 }
841
842 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PORT_UP, eqe)) {
843 if (netif_msg_link(port))
844 ehea_info("%s: Physical port up",
845 port->netdev->name);
846 } else {
847 if (netif_msg_link(port))
848 ehea_info("%s: Physical port down",
849 port->netdev->name);
850 }
851
852 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PRIMARY, eqe))
853 ehea_info("External switch port is primary port");
854 else
855 ehea_info("External switch port is backup port");
856
857 break;
858 case EHEA_EC_ADAPTER_MALFUNC:
859 ehea_error("Adapter malfunction");
860 break;
861 case EHEA_EC_PORT_MALFUNC:
862 ehea_info("Port malfunction: Device: %s", port->netdev->name);
863 netif_carrier_off(port->netdev);
864 netif_stop_queue(port->netdev);
865 break;
866 default:
bff0a55f 867 ehea_error("unknown event code %x, eqe=0x%lX", ec, eqe);
7a291083
JBT		 868 break;
869 }
870}
871
872static void ehea_neq_tasklet(unsigned long data)
873{
874 struct ehea_adapter *adapter = (struct ehea_adapter*)data;
875 struct ehea_eqe *eqe;
876 u64 event_mask;
877
878 eqe = ehea_poll_eq(adapter->neq);
879 ehea_debug("eqe=%p", eqe);
880
881 while (eqe) {
882 ehea_debug("*eqe=%lx", eqe->entry);
883 ehea_parse_eqe(adapter, eqe->entry);
884 eqe = ehea_poll_eq(adapter->neq);
885 ehea_debug("next eqe=%p", eqe);
886 }
887
888 event_mask = EHEA_BMASK_SET(NELR_PORTSTATE_CHG, 1)
889 | EHEA_BMASK_SET(NELR_ADAPTER_MALFUNC, 1)
890 | EHEA_BMASK_SET(NELR_PORT_MALFUNC, 1);
891
892 ehea_h_reset_events(adapter->handle,
893 adapter->neq->fw_handle, event_mask);
894}
895
7d12e780 896static irqreturn_t ehea_interrupt_neq(int irq, void *param)
7a291083
JBT		 897{
898 struct ehea_adapter *adapter = param;
899 tasklet_hi_schedule(&adapter->neq_tasklet);
900 return IRQ_HANDLED;
901}
902
903
904static int ehea_fill_port_res(struct ehea_port_res *pr)
905{
906 int ret;
907 struct ehea_qp_init_attr *init_attr = &pr->qp->init_attr;
908
909 ret = ehea_init_fill_rq1(pr, init_attr->act_nr_rwqes_rq1
910 - init_attr->act_nr_rwqes_rq2
911 - init_attr->act_nr_rwqes_rq3 - 1);
912
913 ret |= ehea_refill_rq2(pr, init_attr->act_nr_rwqes_rq2 - 1);
914
915 ret |= ehea_refill_rq3(pr, init_attr->act_nr_rwqes_rq3 - 1);
916
917 return ret;
918}
919
920static int ehea_reg_interrupts(struct net_device *dev)
921{
922 struct ehea_port *port = netdev_priv(dev);
923 struct ehea_port_res *pr;
924 int i, ret;
925
7a291083
JBT		 926
927 snprintf(port->int_aff_name, EHEA_IRQ_NAME_SIZE - 1, "%s-aff",
928 dev->name);
929
930 ret = ibmebus_request_irq(NULL, port->qp_eq->attr.ist1,
931 ehea_qp_aff_irq_handler,
38515e90 932 IRQF_DISABLED, port->int_aff_name, port);
7a291083
JBT		 933 if (ret) {
934 ehea_error("failed registering irq for qp_aff_irq_handler:"
935 "ist=%X", port->qp_eq->attr.ist1);
936 goto out_free_qpeq;
937 }
938
939 if (netif_msg_ifup(port))
940 ehea_info("irq_handle 0x%X for function qp_aff_irq_handler "
941 "registered", port->qp_eq->attr.ist1);
942
18604c54 943
7a291083
JBT		 944 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
945 pr = &port->port_res[i];
946 snprintf(pr->int_send_name, EHEA_IRQ_NAME_SIZE - 1,
18604c54
JBT		 947 "%s-queue%d", dev->name, i);
948 ret = ibmebus_request_irq(NULL, pr->eq->attr.ist1,
949 ehea_recv_irq_handler,
38515e90 950 IRQF_DISABLED, pr->int_send_name,
7a291083
JBT		 951 pr);
952 if (ret) {
18604c54 953 ehea_error("failed registering irq for ehea_queue "
7a291083 954 "port_res_nr:%d, ist=%X", i,
18604c54 955 pr->eq->attr.ist1);
7a291083
JBT		 956 goto out_free_req;
957 }
958 if (netif_msg_ifup(port))
18604c54
JBT		 959 ehea_info("irq_handle 0x%X for function ehea_queue_int "
960 "%d registered", pr->eq->attr.ist1, i);
7a291083
JBT		 961 }
962out:
963 return ret;
964
18604c54 965
7a291083
JBT		 966out_free_req:
967 while (--i >= 0) {
18604c54 968 u32 ist = port->port_res[i].eq->attr.ist1;
7a291083
JBT		 969 ibmebus_free_irq(NULL, ist, &port->port_res[i]);
970 }
18604c54 971
7a291083
JBT		 972out_free_qpeq:
973 ibmebus_free_irq(NULL, port->qp_eq->attr.ist1, port);
974 i = port->num_def_qps;
18604c54 975
7a291083 976 goto out;
18604c54 977
7a291083
JBT		 978}
979
980static void ehea_free_interrupts(struct net_device *dev)
981{
982 struct ehea_port *port = netdev_priv(dev);
983 struct ehea_port_res *pr;
984 int i;
985
986 /* send */
18604c54 987
7a291083
JBT		 988 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
989 pr = &port->port_res[i];
18604c54 990 ibmebus_free_irq(NULL, pr->eq->attr.ist1, pr);
7a291083
JBT		 991 if (netif_msg_intr(port))
992 ehea_info("free send irq for res %d with handle 0x%X",
18604c54 993 i, pr->eq->attr.ist1);
7a291083
JBT		 994 }
995
996 /* associated events */
997 ibmebus_free_irq(NULL, port->qp_eq->attr.ist1, port);
998 if (netif_msg_intr(port))
999 ehea_info("associated event interrupt for handle 0x%X freed",
1000 port->qp_eq->attr.ist1);
1001}
1002
1003static int ehea_configure_port(struct ehea_port *port)
1004{
1005 int ret, i;
1006 u64 hret, mask;
1007 struct hcp_ehea_port_cb0 *cb0;
1008
1009 ret = -ENOMEM;
a1d261c5 1010 cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL);
7a291083
JBT		 1011 if (!cb0)
1012 goto out;
1013
1014 cb0->port_rc = EHEA_BMASK_SET(PXLY_RC_VALID, 1)
1015 | EHEA_BMASK_SET(PXLY_RC_IP_CHKSUM, 1)
1016 | EHEA_BMASK_SET(PXLY_RC_TCP_UDP_CHKSUM, 1)
1017 | EHEA_BMASK_SET(PXLY_RC_VLAN_XTRACT, 1)
1018 | EHEA_BMASK_SET(PXLY_RC_VLAN_TAG_FILTER,
1019 PXLY_RC_VLAN_FILTER)
1020 | EHEA_BMASK_SET(PXLY_RC_JUMBO_FRAME, 1);
1021
18604c54
JBT		 1022 for (i = 0; i < port->num_mcs; i++)
1023 if (use_mcs)
1024 cb0->default_qpn_arr[i] =
1025 port->port_res[i].qp->init_attr.qp_nr;
1026 else
1027 cb0->default_qpn_arr[i] =
1028 port->port_res[0].qp->init_attr.qp_nr;
e542aa6b 1029
7a291083
JBT		 1030 if (netif_msg_ifup(port))
1031 ehea_dump(cb0, sizeof(*cb0), "ehea_configure_port");
1032
1033 mask = EHEA_BMASK_SET(H_PORT_CB0_PRC, 1)
1034 | EHEA_BMASK_SET(H_PORT_CB0_DEFQPNARRAY, 1);
1035
1036 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1037 port->logical_port_id,
1038 H_PORT_CB0, mask, cb0);
1039 ret = -EIO;
1040 if (hret != H_SUCCESS)
1041 goto out_free;
1042
1043 ret = 0;
1044
1045out_free:
1046 kfree(cb0);
1047out:
1048 return ret;
1049}
1050
e542aa6b 1051int ehea_gen_smrs(struct ehea_port_res *pr)
7a291083 1052{
e542aa6b 1053 int ret;
7a291083
JBT		 1054 struct ehea_adapter *adapter = pr->port->adapter;
1055
e542aa6b
JBT		 1056 ret = ehea_gen_smr(adapter, &adapter->mr, &pr->send_mr);
1057 if (ret)
7a291083
JBT		 1058 goto out;
1059
e542aa6b
JBT		 1060 ret = ehea_gen_smr(adapter, &adapter->mr, &pr->recv_mr);
1061 if (ret)
1062 goto out_free;
7a291083
JBT		 1063
1064 return 0;
1065
e542aa6b
JBT		 1066out_free:
1067 ehea_rem_mr(&pr->send_mr);
7a291083 1068out:
e542aa6b 1069 ehea_error("Generating SMRS failed\n");
7a291083
JBT		 1070 return -EIO;
1071}
1072
e542aa6b 1073int ehea_rem_smrs(struct ehea_port_res *pr)
7a291083 1074{
e542aa6b
JBT		 1075 if ((ehea_rem_mr(&pr->send_mr))
1076 || (ehea_rem_mr(&pr->recv_mr)))
1077 return -EIO;
1078 else
1079 return 0;
7a291083
JBT		 1080}
1081
1082static int ehea_init_q_skba(struct ehea_q_skb_arr *q_skba, int max_q_entries)
1083{
1084 int arr_size = sizeof(void*) * max_q_entries;
1085
1086 q_skba->arr = vmalloc(arr_size);
1087 if (!q_skba->arr)
1088 return -ENOMEM;
1089
1090 memset(q_skba->arr, 0, arr_size);
1091
1092 q_skba->len = max_q_entries;
1093 q_skba->index = 0;
1094 q_skba->os_skbs = 0;
1095
1096 return 0;
1097}
1098
1099static int ehea_init_port_res(struct ehea_port *port, struct ehea_port_res *pr,
1100 struct port_res_cfg *pr_cfg, int queue_token)
1101{
1102 struct ehea_adapter *adapter = port->adapter;
1103 enum ehea_eq_type eq_type = EHEA_EQ;
1104 struct ehea_qp_init_attr *init_attr = NULL;
1105 int ret = -EIO;
1106
1107 memset(pr, 0, sizeof(struct ehea_port_res));
1108
1109 pr->port = port;
7a291083
JBT		 1110 spin_lock_init(&pr->xmit_lock);
1111 spin_lock_init(&pr->netif_queue);
1112
18604c54
JBT		 1113 pr->eq = ehea_create_eq(adapter, eq_type, EHEA_MAX_ENTRIES_EQ, 0);
1114 if (!pr->eq) {
1115 ehea_error("create_eq failed (eq)");
7a291083
JBT		 1116 goto out_free;
1117 }
1118
1119 pr->recv_cq = ehea_create_cq(adapter, pr_cfg->max_entries_rcq,
18604c54 1120 pr->eq->fw_handle,
7a291083
JBT		 1121 port->logical_port_id);
1122 if (!pr->recv_cq) {
1123 ehea_error("create_cq failed (cq_recv)");
1124 goto out_free;
1125 }
1126
1127 pr->send_cq = ehea_create_cq(adapter, pr_cfg->max_entries_scq,
18604c54 1128 pr->eq->fw_handle,
7a291083
JBT		 1129 port->logical_port_id);
1130 if (!pr->send_cq) {
1131 ehea_error("create_cq failed (cq_send)");
1132 goto out_free;
1133 }
1134
1135 if (netif_msg_ifup(port))
1136 ehea_info("Send CQ: act_nr_cqes=%d, Recv CQ: act_nr_cqes=%d",
1137 pr->send_cq->attr.act_nr_of_cqes,
1138 pr->recv_cq->attr.act_nr_of_cqes);
1139
1140 init_attr = kzalloc(sizeof(*init_attr), GFP_KERNEL);
1141 if (!init_attr) {
1142 ret = -ENOMEM;
1143 ehea_error("no mem for ehea_qp_init_attr");
1144 goto out_free;
1145 }
1146
1147 init_attr->low_lat_rq1 = 1;
1148 init_attr->signalingtype = 1; /* generate CQE if specified in WQE */
1149 init_attr->rq_count = 3;
1150 init_attr->qp_token = queue_token;
1151 init_attr->max_nr_send_wqes = pr_cfg->max_entries_sq;
1152 init_attr->max_nr_rwqes_rq1 = pr_cfg->max_entries_rq1;
1153 init_attr->max_nr_rwqes_rq2 = pr_cfg->max_entries_rq2;
1154 init_attr->max_nr_rwqes_rq3 = pr_cfg->max_entries_rq3;
1155 init_attr->wqe_size_enc_sq = EHEA_SG_SQ;
1156 init_attr->wqe_size_enc_rq1 = EHEA_SG_RQ1;
1157 init_attr->wqe_size_enc_rq2 = EHEA_SG_RQ2;
1158 init_attr->wqe_size_enc_rq3 = EHEA_SG_RQ3;
1159 init_attr->rq2_threshold = EHEA_RQ2_THRESHOLD;
1160 init_attr->rq3_threshold = EHEA_RQ3_THRESHOLD;
1161 init_attr->port_nr = port->logical_port_id;
1162 init_attr->send_cq_handle = pr->send_cq->fw_handle;
1163 init_attr->recv_cq_handle = pr->recv_cq->fw_handle;
1164 init_attr->aff_eq_handle = port->qp_eq->fw_handle;
1165
1166 pr->qp = ehea_create_qp(adapter, adapter->pd, init_attr);
1167 if (!pr->qp) {
1168 ehea_error("create_qp failed");
1169 ret = -EIO;
1170 goto out_free;
1171 }
1172
1173 if (netif_msg_ifup(port))
1174 ehea_info("QP: qp_nr=%d\n act_nr_snd_wqe=%d\n nr_rwqe_rq1=%d\n "
1175 "nr_rwqe_rq2=%d\n nr_rwqe_rq3=%d", init_attr->qp_nr,
1176 init_attr->act_nr_send_wqes,
1177 init_attr->act_nr_rwqes_rq1,
1178 init_attr->act_nr_rwqes_rq2,
1179 init_attr->act_nr_rwqes_rq3);
1180
1181 ret = ehea_init_q_skba(&pr->sq_skba, init_attr->act_nr_send_wqes + 1);
1182 ret |= ehea_init_q_skba(&pr->rq1_skba, init_attr->act_nr_rwqes_rq1 + 1);
1183 ret |= ehea_init_q_skba(&pr->rq2_skba, init_attr->act_nr_rwqes_rq2 + 1);
1184 ret |= ehea_init_q_skba(&pr->rq3_skba, init_attr->act_nr_rwqes_rq3 + 1);
1185 if (ret)
1186 goto out_free;
1187
1188 pr->swqe_refill_th = init_attr->act_nr_send_wqes / 10;
1189 if (ehea_gen_smrs(pr) != 0) {
1190 ret = -EIO;
1191 goto out_free;
1192 }
18604c54 1193
7a291083
JBT		 1194 atomic_set(&pr->swqe_avail, init_attr->act_nr_send_wqes - 1);
1195
1196 kfree(init_attr);
18604c54
JBT		 1197
1198 pr->d_netdev = alloc_netdev(0, "", ether_setup);
1199 if (!pr->d_netdev)
1200 goto out_free;
1201 pr->d_netdev->priv = pr;
1202 pr->d_netdev->weight = 64;
1203 pr->d_netdev->poll = ehea_poll;
1204 set_bit(__LINK_STATE_START, &pr->d_netdev->state);
1205 strcpy(pr->d_netdev->name, port->netdev->name);
1206
7a291083
JBT		 1207 ret = 0;
1208 goto out;
1209
1210out_free:
1211 kfree(init_attr);
1212 vfree(pr->sq_skba.arr);
1213 vfree(pr->rq1_skba.arr);
1214 vfree(pr->rq2_skba.arr);
1215 vfree(pr->rq3_skba.arr);
1216 ehea_destroy_qp(pr->qp);
1217 ehea_destroy_cq(pr->send_cq);
1218 ehea_destroy_cq(pr->recv_cq);
18604c54 1219 ehea_destroy_eq(pr->eq);
7a291083
JBT		 1220out:
1221 return ret;
1222}
1223
1224static int ehea_clean_portres(struct ehea_port *port, struct ehea_port_res *pr)
1225{
1226 int ret, i;
1227
18604c54
JBT		 1228 free_netdev(pr->d_netdev);
1229
7a291083
JBT		 1230 ret = ehea_destroy_qp(pr->qp);
1231
1232 if (!ret) {
1233 ehea_destroy_cq(pr->send_cq);
1234 ehea_destroy_cq(pr->recv_cq);
18604c54 1235 ehea_destroy_eq(pr->eq);
7a291083
JBT		 1236
1237 for (i = 0; i < pr->rq1_skba.len; i++)
1238 if (pr->rq1_skba.arr[i])
1239 dev_kfree_skb(pr->rq1_skba.arr[i]);
1240
1241 for (i = 0; i < pr->rq2_skba.len; i++)
1242 if (pr->rq2_skba.arr[i])
1243 dev_kfree_skb(pr->rq2_skba.arr[i]);
1244
1245 for (i = 0; i < pr->rq3_skba.len; i++)
1246 if (pr->rq3_skba.arr[i])
1247 dev_kfree_skb(pr->rq3_skba.arr[i]);
1248
1249 for (i = 0; i < pr->sq_skba.len; i++)
1250 if (pr->sq_skba.arr[i])
1251 dev_kfree_skb(pr->sq_skba.arr[i]);
1252
1253 vfree(pr->rq1_skba.arr);
1254 vfree(pr->rq2_skba.arr);
1255 vfree(pr->rq3_skba.arr);
1256 vfree(pr->sq_skba.arr);
1257 ret = ehea_rem_smrs(pr);
1258 }
1259 return ret;
1260}
1261
1262/*
1263 * The write_* functions store information in swqe which is used by
1264 * the hardware to calculate the ip/tcp/udp checksum
1265 */
1266
1267static inline void write_ip_start_end(struct ehea_swqe *swqe,
1268 const struct sk_buff *skb)
1269{
eddc9ec5 1270 swqe->ip_start = skb_network_offset(skb);
c9bdd4b5 1271 swqe->ip_end = (u8)(swqe->ip_start + ip_hdrlen(skb) - 1);
7a291083
JBT		 1272}
1273
1274static inline void write_tcp_offset_end(struct ehea_swqe *swqe,
1275 const struct sk_buff *skb)
1276{
1277 swqe->tcp_offset =
1278 (u8)(swqe->ip_end + 1 + offsetof(struct tcphdr, check));
1279
1280 swqe->tcp_end = (u16)skb->len - 1;
1281}
1282
1283static inline void write_udp_offset_end(struct ehea_swqe *swqe,
1284 const struct sk_buff *skb)
1285{
1286 swqe->tcp_offset =
1287 (u8)(swqe->ip_end + 1 + offsetof(struct udphdr, check));
1288
1289 swqe->tcp_end = (u16)skb->len - 1;
1290}
1291
1292
1293static void write_swqe2_TSO(struct sk_buff *skb,
1294 struct ehea_swqe *swqe, u32 lkey)
1295{
1296 struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry;
1297 u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0];
1298 int skb_data_size = skb->len - skb->data_len;
1299 int headersize;
1300 u64 tmp_addr;
1301
1302 /* Packet is TCP with TSO enabled */
1303 swqe->tx_control |= EHEA_SWQE_TSO;
1304 swqe->mss = skb_shinfo(skb)->gso_size;
1305 /* copy only eth/ip/tcp headers to immediate data and
1306 * the rest of skb->data to sg1entry
1307 */
ab6a5bb6 1308 headersize = ETH_HLEN + ip_hdrlen(skb) + tcp_hdrlen(skb);
7a291083
JBT		 1309
1310 skb_data_size = skb->len - skb->data_len;
1311
1312 if (skb_data_size >= headersize) {
1313 /* copy immediate data */
d626f62b 1314 skb_copy_from_linear_data(skb, imm_data, headersize);
7a291083
JBT		 1315 swqe->immediate_data_length = headersize;
1316
1317 if (skb_data_size > headersize) {
1318 /* set sg1entry data */
1319 sg1entry->l_key = lkey;
1320 sg1entry->len = skb_data_size - headersize;
1321
1322 tmp_addr = (u64)(skb->data + headersize);
1323 sg1entry->vaddr = tmp_addr;
1324 swqe->descriptors++;
1325 }
1326 } else
1327 ehea_error("cannot handle fragmented headers");
1328}
1329
1330static void write_swqe2_nonTSO(struct sk_buff *skb,
1331 struct ehea_swqe *swqe, u32 lkey)
1332{
1333 int skb_data_size = skb->len - skb->data_len;
1334 u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0];
1335 struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry;
1336 u64 tmp_addr;
1337
1338 /* Packet is any nonTSO type
1339 *
1340 * Copy as much as possible skb->data to immediate data and
1341 * the rest to sg1entry
1342 */
1343 if (skb_data_size >= SWQE2_MAX_IMM) {
1344 /* copy immediate data */
d626f62b 1345 skb_copy_from_linear_data(skb, imm_data, SWQE2_MAX_IMM);
7a291083
JBT		 1346
1347 swqe->immediate_data_length = SWQE2_MAX_IMM;
1348
1349 if (skb_data_size > SWQE2_MAX_IMM) {
1350 /* copy sg1entry data */
1351 sg1entry->l_key = lkey;
1352 sg1entry->len = skb_data_size - SWQE2_MAX_IMM;
1353 tmp_addr = (u64)(skb->data + SWQE2_MAX_IMM);
1354 sg1entry->vaddr = tmp_addr;
1355 swqe->descriptors++;
1356 }
1357 } else {
d626f62b 1358 skb_copy_from_linear_data(skb, imm_data, skb_data_size);
7a291083
JBT		 1359 swqe->immediate_data_length = skb_data_size;
1360 }
1361}
1362
1363static inline void write_swqe2_data(struct sk_buff *skb, struct net_device *dev,
1364 struct ehea_swqe *swqe, u32 lkey)
1365{
1366 struct ehea_vsgentry *sg_list, *sg1entry, *sgentry;
1367 skb_frag_t *frag;
1368 int nfrags, sg1entry_contains_frag_data, i;
1369 u64 tmp_addr;
1370
1371 nfrags = skb_shinfo(skb)->nr_frags;
1372 sg1entry = &swqe->u.immdata_desc.sg_entry;
1373 sg_list = (struct ehea_vsgentry*)&swqe->u.immdata_desc.sg_list;
1374 swqe->descriptors = 0;
1375 sg1entry_contains_frag_data = 0;
1376
1377 if ((dev->features & NETIF_F_TSO) && skb_shinfo(skb)->gso_size)
1378 write_swqe2_TSO(skb, swqe, lkey);
1379 else
1380 write_swqe2_nonTSO(skb, swqe, lkey);
1381
1382 /* write descriptors */
1383 if (nfrags > 0) {
1384 if (swqe->descriptors == 0) {
1385 /* sg1entry not yet used */
1386 frag = &skb_shinfo(skb)->frags[0];
1387
1388 /* copy sg1entry data */
1389 sg1entry->l_key = lkey;
1390 sg1entry->len = frag->size;
1391 tmp_addr = (u64)(page_address(frag->page)
1392 + frag->page_offset);
1393 sg1entry->vaddr = tmp_addr;
1394 swqe->descriptors++;
1395 sg1entry_contains_frag_data = 1;
1396 }
1397
1398 for (i = sg1entry_contains_frag_data; i < nfrags; i++) {
1399
1400 frag = &skb_shinfo(skb)->frags[i];
1401 sgentry = &sg_list[i - sg1entry_contains_frag_data];
1402
1403 sgentry->l_key = lkey;
1404 sgentry->len = frag->size;
1405
1406 tmp_addr = (u64)(page_address(frag->page)
1407 + frag->page_offset);
1408 sgentry->vaddr = tmp_addr;
1409 swqe->descriptors++;
1410 }
1411 }
1412}
1413
1414static int ehea_broadcast_reg_helper(struct ehea_port *port, u32 hcallid)
1415{
1416 int ret = 0;
1417 u64 hret;
1418 u8 reg_type;
1419
1420 /* De/Register untagged packets */
1421 reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_UNTAGGED;
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 (tagged)");
1427 ret = -EIO;
1428 goto out_herr;
1429 }
1430
1431 /* De/Register VLAN packets */
1432 reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_VLANID_ALL;
1433 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1434 port->logical_port_id,
1435 reg_type, port->mac_addr, 0, hcallid);
1436 if (hret != H_SUCCESS) {
1437 ehea_error("reg_dereg_bcmc failed (vlan)");
1438 ret = -EIO;
1439 }
1440out_herr:
1441 return ret;
1442}
1443
1444static int ehea_set_mac_addr(struct net_device *dev, void *sa)
1445{
1446 struct ehea_port *port = netdev_priv(dev);
1447 struct sockaddr *mac_addr = sa;
1448 struct hcp_ehea_port_cb0 *cb0;
1449 int ret;
1450 u64 hret;
1451
1452 if (!is_valid_ether_addr(mac_addr->sa_data)) {
1453 ret = -EADDRNOTAVAIL;
1454 goto out;
1455 }
1456
a1d261c5 1457 cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL);
7a291083
JBT		 1458 if (!cb0) {
1459 ehea_error("no mem for cb0");
1460 ret = -ENOMEM;
1461 goto out;
1462 }
1463
1464 memcpy(&(cb0->port_mac_addr), &(mac_addr->sa_data[0]), ETH_ALEN);
1465
1466 cb0->port_mac_addr = cb0->port_mac_addr >> 16;
1467
1468 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1469 port->logical_port_id, H_PORT_CB0,
1470 EHEA_BMASK_SET(H_PORT_CB0_MAC, 1), cb0);
1471 if (hret != H_SUCCESS) {
1472 ret = -EIO;
1473 goto out_free;
1474 }
1475
1476 memcpy(dev->dev_addr, mac_addr->sa_data, dev->addr_len);
1477
1478 /* Deregister old MAC in pHYP */
1479 ret = ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
1480 if (ret)
1481 goto out_free;
1482
1483 port->mac_addr = cb0->port_mac_addr << 16;
1484
1485 /* Register new MAC in pHYP */
1486 ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
1487 if (ret)
1488 goto out_free;
1489
1490 ret = 0;
1491out_free:
1492 kfree(cb0);
1493out:
1494 return ret;
1495}
1496
1497static void ehea_promiscuous_error(u64 hret, int enable)
1498{
7674a588
TK		 1499 if (hret == H_AUTHORITY)
1500 ehea_info("Hypervisor denied %sabling promiscuous mode",
1501 enable == 1 ? "en" : "dis");
1502 else
1503 ehea_error("failed %sabling promiscuous mode",
1504 enable == 1 ? "en" : "dis");
7a291083
JBT		 1505}
1506
1507static void ehea_promiscuous(struct net_device *dev, int enable)
1508{
1509 struct ehea_port *port = netdev_priv(dev);
1510 struct hcp_ehea_port_cb7 *cb7;
1511 u64 hret;
1512
1513 if ((enable && port->promisc) || (!enable && !port->promisc))
1514 return;
1515
a1d261c5 1516 cb7 = kzalloc(PAGE_SIZE, GFP_ATOMIC);
7a291083
JBT		 1517 if (!cb7) {
1518 ehea_error("no mem for cb7");
1519 goto out;
1520 }
1521
1522 /* Modify Pxs_DUCQPN in CB7 */
1523 cb7->def_uc_qpn = enable == 1 ? port->port_res[0].qp->fw_handle : 0;
1524
1525 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1526 port->logical_port_id,
1527 H_PORT_CB7, H_PORT_CB7_DUCQPN, cb7);
1528 if (hret) {
1529 ehea_promiscuous_error(hret, enable);
1530 goto out;
1531 }
1532
1533 port->promisc = enable;
1534out:
1535 kfree(cb7);
1536 return;
1537}
1538
1539static u64 ehea_multicast_reg_helper(struct ehea_port *port, u64 mc_mac_addr,
1540 u32 hcallid)
1541{
1542 u64 hret;
1543 u8 reg_type;
1544
1545 reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST
1546 | EHEA_BCMC_UNTAGGED;
1547
1548 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1549 port->logical_port_id,
1550 reg_type, mc_mac_addr, 0, hcallid);
1551 if (hret)
1552 goto out;
1553
1554 reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST
1555 | EHEA_BCMC_VLANID_ALL;
1556
1557 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1558 port->logical_port_id,
1559 reg_type, mc_mac_addr, 0, hcallid);
1560out:
1561 return hret;
1562}
1563
1564static int ehea_drop_multicast_list(struct net_device *dev)
1565{
1566 struct ehea_port *port = netdev_priv(dev);
1567 struct ehea_mc_list *mc_entry = port->mc_list;
1568 struct list_head *pos;
1569 struct list_head *temp;
1570 int ret = 0;
1571 u64 hret;
1572
1573 list_for_each_safe(pos, temp, &(port->mc_list->list)) {
1574 mc_entry = list_entry(pos, struct ehea_mc_list, list);
1575
1576 hret = ehea_multicast_reg_helper(port, mc_entry->macaddr,
1577 H_DEREG_BCMC);
1578 if (hret) {
1579 ehea_error("failed deregistering mcast MAC");
1580 ret = -EIO;
1581 }
1582
1583 list_del(pos);
1584 kfree(mc_entry);
1585 }
1586 return ret;
1587}
1588
1589static void ehea_allmulti(struct net_device *dev, int enable)
1590{
1591 struct ehea_port *port = netdev_priv(dev);
1592 u64 hret;
1593
1594 if (!port->allmulti) {
1595 if (enable) {
1596 /* Enable ALLMULTI */
1597 ehea_drop_multicast_list(dev);
1598 hret = ehea_multicast_reg_helper(port, 0, H_REG_BCMC);
1599 if (!hret)
1600 port->allmulti = 1;
1601 else
1602 ehea_error("failed enabling IFF_ALLMULTI");
1603 }
1604 } else
1605 if (!enable) {
1606 /* Disable ALLMULTI */
1607 hret = ehea_multicast_reg_helper(port, 0, H_DEREG_BCMC);
1608 if (!hret)
1609 port->allmulti = 0;
1610 else
1611 ehea_error("failed disabling IFF_ALLMULTI");
1612 }
1613}
1614
1615static void ehea_add_multicast_entry(struct ehea_port* port, u8* mc_mac_addr)
1616{
1617 struct ehea_mc_list *ehea_mcl_entry;
1618 u64 hret;
1619
1e1675cc 1620 ehea_mcl_entry = kzalloc(sizeof(*ehea_mcl_entry), GFP_ATOMIC);
7a291083
JBT		 1621 if (!ehea_mcl_entry) {
1622 ehea_error("no mem for mcl_entry");
1623 return;
1624 }
1625
1626 INIT_LIST_HEAD(&ehea_mcl_entry->list);
1627
1628 memcpy(&ehea_mcl_entry->macaddr, mc_mac_addr, ETH_ALEN);
1629
1630 hret = ehea_multicast_reg_helper(port, ehea_mcl_entry->macaddr,
1631 H_REG_BCMC);
1632 if (!hret)
1633 list_add(&ehea_mcl_entry->list, &port->mc_list->list);
1634 else {
1635 ehea_error("failed registering mcast MAC");
1636 kfree(ehea_mcl_entry);
1637 }
1638}
1639
1640static void ehea_set_multicast_list(struct net_device *dev)
1641{
1642 struct ehea_port *port = netdev_priv(dev);
1643 struct dev_mc_list *k_mcl_entry;
1644 int ret, i;
1645
1646 if (dev->flags & IFF_PROMISC) {
1647 ehea_promiscuous(dev, 1);
1648 return;
1649 }
1650 ehea_promiscuous(dev, 0);
1651
1652 if (dev->flags & IFF_ALLMULTI) {
1653 ehea_allmulti(dev, 1);
1654 return;
1655 }
1656 ehea_allmulti(dev, 0);
1657
1658 if (dev->mc_count) {
1659 ret = ehea_drop_multicast_list(dev);
1660 if (ret) {
1661 /* Dropping the current multicast list failed.
1662 * Enabling ALL_MULTI is the best we can do.
1663 */
1664 ehea_allmulti(dev, 1);
1665 }
1666
1667 if (dev->mc_count > port->adapter->max_mc_mac) {
1668 ehea_info("Mcast registration limit reached (0x%lx). "
1669 "Use ALLMULTI!",
1670 port->adapter->max_mc_mac);
1671 goto out;
1672 }
1673
1674 for (i = 0, k_mcl_entry = dev->mc_list;
1675 i < dev->mc_count;
1676 i++, k_mcl_entry = k_mcl_entry->next) {
1677 ehea_add_multicast_entry(port, k_mcl_entry->dmi_addr);
1678 }
1679 }
1680out:
1681 return;
1682}
1683
1684static int ehea_change_mtu(struct net_device *dev, int new_mtu)
1685{
1686 if ((new_mtu < 68) || (new_mtu > EHEA_MAX_PACKET_SIZE))
1687 return -EINVAL;
1688 dev->mtu = new_mtu;
1689 return 0;
1690}
1691
1692static void ehea_xmit2(struct sk_buff *skb, struct net_device *dev,
1693 struct ehea_swqe *swqe, u32 lkey)
1694{
1695 if (skb->protocol == htons(ETH_P_IP)) {
eddc9ec5 1696 const struct iphdr *iph = ip_hdr(skb);
7a291083
JBT		 1697 /* IPv4 */
1698 swqe->tx_control |= EHEA_SWQE_CRC
1699 | EHEA_SWQE_IP_CHECKSUM
1700 | EHEA_SWQE_TCP_CHECKSUM
1701 | EHEA_SWQE_IMM_DATA_PRESENT
1702 | EHEA_SWQE_DESCRIPTORS_PRESENT;
1703
1704 write_ip_start_end(swqe, skb);
1705
eddc9ec5
ACM		 1706 if (iph->protocol == IPPROTO_UDP) {
1707 if ((iph->frag_off & IP_MF) ||
1708 (iph->frag_off & IP_OFFSET))
7a291083
JBT		 1709 /* IP fragment, so don't change cs */
1710 swqe->tx_control &= ~EHEA_SWQE_TCP_CHECKSUM;
1711 else
1712 write_udp_offset_end(swqe, skb);
1713
eddc9ec5 1714 } else if (iph->protocol == IPPROTO_TCP) {
7a291083
JBT		 1715 write_tcp_offset_end(swqe, skb);
1716 }
1717
1718 /* icmp (big data) and ip segmentation packets (all other ip
1719 packets) do not require any special handling */
1720
1721 } else {
1722 /* Other Ethernet Protocol */
1723 swqe->tx_control |= EHEA_SWQE_CRC
1724 | EHEA_SWQE_IMM_DATA_PRESENT
1725 | EHEA_SWQE_DESCRIPTORS_PRESENT;
1726 }
1727
1728 write_swqe2_data(skb, dev, swqe, lkey);
1729}
1730
1731static void ehea_xmit3(struct sk_buff *skb, struct net_device *dev,
1732 struct ehea_swqe *swqe)
1733{
1734 int nfrags = skb_shinfo(skb)->nr_frags;
1735 u8 *imm_data = &swqe->u.immdata_nodesc.immediate_data[0];
1736 skb_frag_t *frag;
1737 int i;
1738
1739 if (skb->protocol == htons(ETH_P_IP)) {
eddc9ec5 1740 const struct iphdr *iph = ip_hdr(skb);
7a291083
JBT		 1741 /* IPv4 */
1742 write_ip_start_end(swqe, skb);
1743
eddc9ec5 1744 if (iph->protocol == IPPROTO_TCP) {
7a291083
JBT		 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_tcp_offset_end(swqe, skb);
1751
eddc9ec5
ACM		 1752 } else if (iph->protocol == IPPROTO_UDP) {
1753 if ((iph->frag_off & IP_MF) ||
1754 (iph->frag_off & IP_OFFSET))
7a291083
JBT		 1755 /* IP fragment, so don't change cs */
1756 swqe->tx_control |= EHEA_SWQE_CRC
1757 | EHEA_SWQE_IMM_DATA_PRESENT;
1758 else {
1759 swqe->tx_control |= EHEA_SWQE_CRC
1760 | EHEA_SWQE_IP_CHECKSUM
1761 | EHEA_SWQE_TCP_CHECKSUM
1762 | EHEA_SWQE_IMM_DATA_PRESENT;
1763
1764 write_udp_offset_end(swqe, skb);
1765 }
1766 } else {
1767 /* icmp (big data) and
1768 ip segmentation packets (all other ip packets) */
1769 swqe->tx_control |= EHEA_SWQE_CRC
1770 | EHEA_SWQE_IP_CHECKSUM
1771 | EHEA_SWQE_IMM_DATA_PRESENT;
1772 }
1773 } else {
1774 /* Other Ethernet Protocol */
1775 swqe->tx_control |= EHEA_SWQE_CRC | EHEA_SWQE_IMM_DATA_PRESENT;
1776 }
1777 /* copy (immediate) data */
1778 if (nfrags == 0) {
1779 /* data is in a single piece */
d626f62b 1780 skb_copy_from_linear_data(skb, imm_data, skb->len);
7a291083
JBT		 1781 } else {
1782 /* first copy data from the skb->data buffer ... */
d626f62b
ACM		 1783 skb_copy_from_linear_data(skb, imm_data,
1784 skb->len - skb->data_len);
7a291083
JBT		 1785 imm_data += skb->len - skb->data_len;
1786
1787 /* ... then copy data from the fragments */
1788 for (i = 0; i < nfrags; i++) {
1789 frag = &skb_shinfo(skb)->frags[i];
1790 memcpy(imm_data,
1791 page_address(frag->page) + frag->page_offset,
1792 frag->size);
1793 imm_data += frag->size;
1794 }
1795 }
1796 swqe->immediate_data_length = skb->len;
1797 dev_kfree_skb(skb);
1798}
1799
18604c54
JBT		 1800static inline int ehea_hash_skb(struct sk_buff *skb, int num_qps)
1801{
1802 struct tcphdr *tcp;
1803 u32 tmp;
1804
1805 if ((skb->protocol == htons(ETH_P_IP)) &&
1806 (skb->nh.iph->protocol == IPPROTO_TCP)) {
1807 tcp = (struct tcphdr*)(skb->nh.raw + (skb->nh.iph->ihl * 4));
1808 tmp = (tcp->source + (tcp->dest << 16)) % 31;
1809 tmp += skb->nh.iph->daddr % 31;
1810 return tmp % num_qps;
1811 }
1812 else
1813 return 0;
1814}
1815
7a291083
JBT		 1816static int ehea_start_xmit(struct sk_buff *skb, struct net_device *dev)
1817{
1818 struct ehea_port *port = netdev_priv(dev);
1819 struct ehea_swqe *swqe;
1820 unsigned long flags;
1821 u32 lkey;
1822 int swqe_index;
18604c54
JBT		 1823 struct ehea_port_res *pr;
1824
1825 pr = &port->port_res[ehea_hash_skb(skb, port->num_tx_qps)];
1826
18604c54
JBT		 1827 if (!spin_trylock(&pr->xmit_lock))
1828 return NETDEV_TX_BUSY;
1829
1830 if (pr->queue_stopped) {
1831 spin_unlock(&pr->xmit_lock);
1832 return NETDEV_TX_BUSY;
1833 }
7a291083
JBT		 1834
1835 swqe = ehea_get_swqe(pr->qp, &swqe_index);
1836 memset(swqe, 0, SWQE_HEADER_SIZE);
1837 atomic_dec(&pr->swqe_avail);
1838
1839 if (skb->len <= SWQE3_MAX_IMM) {
1840 u32 sig_iv = port->sig_comp_iv;
1841 u32 swqe_num = pr->swqe_id_counter;
1842 ehea_xmit3(skb, dev, swqe);
1843 swqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE3_TYPE)
1844 | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, swqe_num);
1845 if (pr->swqe_ll_count >= (sig_iv - 1)) {
1846 swqe->wr_id |= EHEA_BMASK_SET(EHEA_WR_ID_REFILL,
1847 sig_iv);
1848 swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
1849 pr->swqe_ll_count = 0;
1850 } else
1851 pr->swqe_ll_count += 1;
1852 } else {
1853 swqe->wr_id =
1854 EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE2_TYPE)
1855 | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, pr->swqe_id_counter)
acbddb59 1856 | EHEA_BMASK_SET(EHEA_WR_ID_REFILL, 1)
7a291083
JBT		 1857 | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, pr->sq_skba.index);
1858 pr->sq_skba.arr[pr->sq_skba.index] = skb;
1859
1860 pr->sq_skba.index++;
1861 pr->sq_skba.index &= (pr->sq_skba.len - 1);
1862
1863 lkey = pr->send_mr.lkey;
1864 ehea_xmit2(skb, dev, swqe, lkey);
acbddb59 1865 swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
7a291083
JBT		 1866 }
1867 pr->swqe_id_counter += 1;
1868
1869 if (port->vgrp && vlan_tx_tag_present(skb)) {
1870 swqe->tx_control |= EHEA_SWQE_VLAN_INSERT;
1871 swqe->vlan_tag = vlan_tx_tag_get(skb);
1872 }
1873
1874 if (netif_msg_tx_queued(port)) {
1875 ehea_info("post swqe on QP %d", pr->qp->init_attr.qp_nr);
bff0a55f 1876 ehea_dump(swqe, 512, "swqe");
7a291083
JBT		 1877 }
1878
1879 ehea_post_swqe(pr->qp, swqe);
1880 pr->tx_packets++;
1881
1882 if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) {
1883 spin_lock_irqsave(&pr->netif_queue, flags);
1884 if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) {
acbddb59 1885 pr->p_stats.queue_stopped++;
7a291083
JBT		 1886 netif_stop_queue(dev);
1887 pr->queue_stopped = 1;
1888 }
1889 spin_unlock_irqrestore(&pr->netif_queue, flags);
1890 }
1891 dev->trans_start = jiffies;
1892 spin_unlock(&pr->xmit_lock);
1893
1894 return NETDEV_TX_OK;
1895}
1896
1897static void ehea_vlan_rx_register(struct net_device *dev,
1898 struct vlan_group *grp)
1899{
1900 struct ehea_port *port = netdev_priv(dev);
1901 struct ehea_adapter *adapter = port->adapter;
1902 struct hcp_ehea_port_cb1 *cb1;
1903 u64 hret;
1904
1905 port->vgrp = grp;
1906
a1d261c5 1907 cb1 = kzalloc(PAGE_SIZE, GFP_KERNEL);
7a291083
JBT		 1908 if (!cb1) {
1909 ehea_error("no mem for cb1");
1910 goto out;
1911 }
1912
1913 if (grp)
1914 memset(cb1->vlan_filter, 0, sizeof(cb1->vlan_filter));
1915 else
1916 memset(cb1->vlan_filter, 0xFF, sizeof(cb1->vlan_filter));
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
1923 kfree(cb1);
1924out:
1925 return;
1926}
1927
1928static void ehea_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
1929{
1930 struct ehea_port *port = netdev_priv(dev);
1931 struct ehea_adapter *adapter = port->adapter;
1932 struct hcp_ehea_port_cb1 *cb1;
1933 int index;
1934 u64 hret;
1935
a1d261c5 1936 cb1 = kzalloc(PAGE_SIZE, GFP_KERNEL);
7a291083
JBT		 1937 if (!cb1) {
1938 ehea_error("no mem for cb1");
1939 goto out;
1940 }
1941
1942 hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
1943 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
1944 if (hret != H_SUCCESS) {
1945 ehea_error("query_ehea_port failed");
1946 goto out;
1947 }
1948
1949 index = (vid / 64);
1950 cb1->vlan_filter[index] |= ((u64)(1 << (vid & 0x3F)));
1951
1952 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
1953 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
1954 if (hret != H_SUCCESS)
1955 ehea_error("modify_ehea_port failed");
1956out:
1957 kfree(cb1);
1958 return;
1959}
1960
1961static void ehea_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
1962{
1963 struct ehea_port *port = netdev_priv(dev);
1964 struct ehea_adapter *adapter = port->adapter;
1965 struct hcp_ehea_port_cb1 *cb1;
1966 int index;
1967 u64 hret;
1968
5c15bdec 1969 vlan_group_set_device(port->vgrp, vid, NULL);
7a291083 1970
a1d261c5 1971 cb1 = kzalloc(PAGE_SIZE, GFP_KERNEL);
7a291083
JBT		 1972 if (!cb1) {
1973 ehea_error("no mem for cb1");
1974 goto out;
1975 }
1976
1977 hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
1978 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
1979 if (hret != H_SUCCESS) {
1980 ehea_error("query_ehea_port failed");
1981 goto out;
1982 }
1983
1984 index = (vid / 64);
1985 cb1->vlan_filter[index] &= ~((u64)(1 << (vid & 0x3F)));
1986
1987 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
1988 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
1989 if (hret != H_SUCCESS)
1990 ehea_error("modify_ehea_port failed");
1991out:
1992 kfree(cb1);
1993 return;
1994}
1995
1996int ehea_activate_qp(struct ehea_adapter *adapter, struct ehea_qp *qp)
1997{
1998 int ret = -EIO;
1999 u64 hret;
2000 u16 dummy16 = 0;
2001 u64 dummy64 = 0;
2002 struct hcp_modify_qp_cb0* cb0;
2003
a1d261c5 2004 cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL);
7a291083
JBT		 2005 if (!cb0) {
2006 ret = -ENOMEM;
2007 goto out;
2008 }
2009
2010 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2011 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2012 if (hret != H_SUCCESS) {
2013 ehea_error("query_ehea_qp failed (1)");
2014 goto out;
2015 }
2016
2017 cb0->qp_ctl_reg = H_QP_CR_STATE_INITIALIZED;
2018 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2019 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2020 &dummy64, &dummy64, &dummy16, &dummy16);
2021 if (hret != H_SUCCESS) {
2022 ehea_error("modify_ehea_qp failed (1)");
2023 goto out;
2024 }
2025
2026 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2027 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2028 if (hret != H_SUCCESS) {
2029 ehea_error("query_ehea_qp failed (2)");
2030 goto out;
2031 }
2032
2033 cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_INITIALIZED;
2034 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2035 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2036 &dummy64, &dummy64, &dummy16, &dummy16);
2037 if (hret != H_SUCCESS) {
2038 ehea_error("modify_ehea_qp failed (2)");
2039 goto out;
2040 }
2041
2042 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2043 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2044 if (hret != H_SUCCESS) {
2045 ehea_error("query_ehea_qp failed (3)");
2046 goto out;
2047 }
2048
2049 cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_RDY2SND;
2050 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2051 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2052 &dummy64, &dummy64, &dummy16, &dummy16);
2053 if (hret != H_SUCCESS) {
2054 ehea_error("modify_ehea_qp failed (3)");
2055 goto out;
2056 }
2057
2058 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2059 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2060 if (hret != H_SUCCESS) {
2061 ehea_error("query_ehea_qp failed (4)");
2062 goto out;
2063 }
2064
2065 ret = 0;
2066out:
2067 kfree(cb0);
2068 return ret;
2069}
2070
2071static int ehea_port_res_setup(struct ehea_port *port, int def_qps,
2072 int add_tx_qps)
2073{
2074 int ret, i;
2075 struct port_res_cfg pr_cfg, pr_cfg_small_rx;
2076 enum ehea_eq_type eq_type = EHEA_EQ;
2077
2078 port->qp_eq = ehea_create_eq(port->adapter, eq_type,
2079 EHEA_MAX_ENTRIES_EQ, 1);
2080 if (!port->qp_eq) {
2081 ret = -EINVAL;
2082 ehea_error("ehea_create_eq failed (qp_eq)");
2083 goto out_kill_eq;
2084 }
2085
2086 pr_cfg.max_entries_rcq = rq1_entries + rq2_entries + rq3_entries;
18604c54 2087 pr_cfg.max_entries_scq = sq_entries * 2;
7a291083
JBT		 2088 pr_cfg.max_entries_sq = sq_entries;
2089 pr_cfg.max_entries_rq1 = rq1_entries;
2090 pr_cfg.max_entries_rq2 = rq2_entries;
2091 pr_cfg.max_entries_rq3 = rq3_entries;
2092
2093 pr_cfg_small_rx.max_entries_rcq = 1;
2094 pr_cfg_small_rx.max_entries_scq = sq_entries;
2095 pr_cfg_small_rx.max_entries_sq = sq_entries;
2096 pr_cfg_small_rx.max_entries_rq1 = 1;
2097 pr_cfg_small_rx.max_entries_rq2 = 1;
2098 pr_cfg_small_rx.max_entries_rq3 = 1;
2099
2100 for (i = 0; i < def_qps; i++) {
2101 ret = ehea_init_port_res(port, &port->port_res[i], &pr_cfg, i);
2102 if (ret)
2103 goto out_clean_pr;
2104 }
2105 for (i = def_qps; i < def_qps + add_tx_qps; i++) {
2106 ret = ehea_init_port_res(port, &port->port_res[i],
2107 &pr_cfg_small_rx, i);
2108 if (ret)
2109 goto out_clean_pr;
2110 }
2111
2112 return 0;
2113
2114out_clean_pr:
2115 while (--i >= 0)
2116 ehea_clean_portres(port, &port->port_res[i]);
2117
2118out_kill_eq:
2119 ehea_destroy_eq(port->qp_eq);
2120 return ret;
2121}
2122
2123static int ehea_clean_all_portres(struct ehea_port *port)
2124{
2125 int ret = 0;
2126 int i;
2127
2128 for(i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
2129 ret |= ehea_clean_portres(port, &port->port_res[i]);
2130
2131 ret |= ehea_destroy_eq(port->qp_eq);
2132
2133 return ret;
2134}
2135
2136static int ehea_up(struct net_device *dev)
2137{
2138 int ret, i;
2139 struct ehea_port *port = netdev_priv(dev);
2140 u64 mac_addr = 0;
2141
2142 if (port->state == EHEA_PORT_UP)
2143 return 0;
2144
2145 ret = ehea_port_res_setup(port, port->num_def_qps,
2146 port->num_add_tx_qps);
2147 if (ret) {
2148 ehea_error("port_res_failed");
2149 goto out;
2150 }
2151
2152 /* Set default QP for this port */
2153 ret = ehea_configure_port(port);
2154 if (ret) {
2155 ehea_error("ehea_configure_port failed. ret:%d", ret);
2156 goto out_clean_pr;
2157 }
2158
2159 ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
2160 if (ret) {
2161 ret = -EIO;
2162 ehea_error("out_clean_pr");
2163 goto out_clean_pr;
2164 }
2165 mac_addr = (*(u64*)dev->dev_addr) >> 16;
2166
2167 ret = ehea_reg_interrupts(dev);
2168 if (ret) {
2169 ehea_error("out_dereg_bc");
2170 goto out_dereg_bc;
2171 }
2172
2173 for(i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
2174 ret = ehea_activate_qp(port->adapter, port->port_res[i].qp);
2175 if (ret) {
2176 ehea_error("activate_qp failed");
2177 goto out_free_irqs;
2178 }
2179 }
2180
2181 for(i = 0; i < port->num_def_qps; i++) {
2182 ret = ehea_fill_port_res(&port->port_res[i]);
2183 if (ret) {
2184 ehea_error("out_free_irqs");
2185 goto out_free_irqs;
2186 }
2187 }
2188
2189 ret = 0;
2190 port->state = EHEA_PORT_UP;
2191 goto out;
2192
2193out_free_irqs:
2194 ehea_free_interrupts(dev);
2195
2196out_dereg_bc:
2197 ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
2198
2199out_clean_pr:
2200 ehea_clean_all_portres(port);
2201out:
2202 return ret;
2203}
2204
2205static int ehea_open(struct net_device *dev)
2206{
2207 int ret;
2208 struct ehea_port *port = netdev_priv(dev);
2209
2210 down(&port->port_lock);
2211
2212 if (netif_msg_ifup(port))
2213 ehea_info("enabling port %s", dev->name);
2214
2215 ret = ehea_up(dev);
2216 if (!ret)
2217 netif_start_queue(dev);
2218
2219 up(&port->port_lock);
2220
2221 return ret;
2222}
2223
2224static int ehea_down(struct net_device *dev)
2225{
2226 int ret, i;
2227 struct ehea_port *port = netdev_priv(dev);
2228
2229 if (port->state == EHEA_PORT_DOWN)
2230 return 0;
2231
2232 ehea_drop_multicast_list(dev);
2233 ehea_free_interrupts(dev);
2234
18604c54 2235 for (i = 0; i < port->num_def_qps; i++)
e542aa6b 2236 while (test_bit(__LINK_STATE_RX_SCHED,
18604c54
JBT		 2237 &port->port_res[i].d_netdev->state))
2238 msleep(1);
7a291083
JBT		 2239
2240 ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
2241 ret = ehea_clean_all_portres(port);
2242 port->state = EHEA_PORT_DOWN;
2243 return ret;
2244}
2245
2246static int ehea_stop(struct net_device *dev)
2247{
2248 int ret;
2249 struct ehea_port *port = netdev_priv(dev);
2250
2251 if (netif_msg_ifdown(port))
2252 ehea_info("disabling port %s", dev->name);
2253
2254 flush_workqueue(port->adapter->ehea_wq);
2255 down(&port->port_lock);
2256 netif_stop_queue(dev);
2257 ret = ehea_down(dev);
2258 up(&port->port_lock);
2259 return ret;
2260}
2261
c4028958 2262static void ehea_reset_port(struct work_struct *work)
7a291083
JBT		 2263{
2264 int ret;
c4028958
DH		 2265 struct ehea_port *port =
2266 container_of(work, struct ehea_port, reset_task);
2267 struct net_device *dev = port->netdev;
7a291083
JBT		 2268
2269 port->resets++;
2270 down(&port->port_lock);
2271 netif_stop_queue(dev);
2272 netif_poll_disable(dev);
2273
2274 ret = ehea_down(dev);
2275 if (ret)
2276 ehea_error("ehea_down failed. not all resources are freed");
2277
2278 ret = ehea_up(dev);
2279 if (ret) {
2280 ehea_error("Reset device %s failed: ret=%d", dev->name, ret);
2281 goto out;
2282 }
2283
2284 if (netif_msg_timer(port))
2285 ehea_info("Device %s resetted successfully", dev->name);
2286
2287 netif_poll_enable(dev);
2288 netif_wake_queue(dev);
2289out:
2290 up(&port->port_lock);
2291 return;
2292}
2293
2294static void ehea_tx_watchdog(struct net_device *dev)
2295{
2296 struct ehea_port *port = netdev_priv(dev);
2297
2298 if (netif_carrier_ok(dev))
2299 queue_work(port->adapter->ehea_wq, &port->reset_task);
2300}
2301
2302int ehea_sense_adapter_attr(struct ehea_adapter *adapter)
2303{
2304 struct hcp_query_ehea *cb;
2305 u64 hret;
2306 int ret;
2307
a1d261c5 2308 cb = kzalloc(PAGE_SIZE, GFP_KERNEL);
7a291083
JBT		 2309 if (!cb) {
2310 ret = -ENOMEM;
2311 goto out;
2312 }
2313
2314 hret = ehea_h_query_ehea(adapter->handle, cb);
2315
2316 if (hret != H_SUCCESS) {
2317 ret = -EIO;
2318 goto out_herr;
2319 }
2320
7a291083
JBT		 2321 adapter->max_mc_mac = cb->max_mc_mac - 1;
2322 ret = 0;
2323
2324out_herr:
2325 kfree(cb);
2326out:
2327 return ret;
2328}
2329
1acf2318 2330int ehea_get_jumboframe_status(struct ehea_port *port, int *jumbo)
7a291083 2331{
7a291083 2332 struct hcp_ehea_port_cb4 *cb4;
1acf2318
JBT		 2333 u64 hret;
2334 int ret = 0;
7a291083 2335
1acf2318 2336 *jumbo = 0;
7a291083 2337
1acf2318 2338 /* (Try to) enable *jumbo frames */
a1d261c5 2339 cb4 = kzalloc(PAGE_SIZE, GFP_KERNEL);
7a291083
JBT		 2340 if (!cb4) {
2341 ehea_error("no mem for cb4");
1acf2318
JBT		 2342 ret = -ENOMEM;
2343 goto out;
7a291083 2344 } else {
1acf2318 2345 hret = ehea_h_query_ehea_port(port->adapter->handle,
9c750b7d
TK		 2346 port->logical_port_id,
2347 H_PORT_CB4,
2348 H_PORT_CB4_JUMBO, cb4);
9c750b7d
TK		 2349 if (hret == H_SUCCESS) {
2350 if (cb4->jumbo_frame)
1acf2318 2351 *jumbo = 1;
9c750b7d
TK		 2352 else {
2353 cb4->jumbo_frame = 1;
1acf2318
JBT		 2354 hret = ehea_h_modify_ehea_port(port->adapter->
2355 handle,
9c750b7d 2356 port->
1acf2318 2357 logical_port_id,
9c750b7d
TK		 2358 H_PORT_CB4,
2359 H_PORT_CB4_JUMBO,
2360 cb4);
2361 if (hret == H_SUCCESS)
1acf2318 2362 *jumbo = 1;
9c750b7d 2363 }
1acf2318
JBT		 2364 } else
2365 ret = -EINVAL;
2366
7a291083
JBT		 2367 kfree(cb4);
2368 }
1acf2318
JBT		 2369out:
2370 return ret;
2371}
2372
2373static ssize_t ehea_show_port_id(struct device *dev,
2374 struct device_attribute *attr, char *buf)
2375{
2376 struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev);
2377 return sprintf(buf, "0x%X", port->logical_port_id);
2378}
2379
2380static DEVICE_ATTR(log_port_id, S_IRUSR | S_IRGRP | S_IROTH, ehea_show_port_id,
2381 NULL);
2382
2383static void __devinit logical_port_release(struct device *dev)
2384{
2385 struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev);
2386 of_node_put(port->ofdev.node);
2387}
2388
d1dea38d
TK		 2389static int ehea_driver_sysfs_add(struct device *dev,
2390 struct device_driver *driver)
2391{
2392 int ret;
2393
2394 ret = sysfs_create_link(&driver->kobj, &dev->kobj,
2395 kobject_name(&dev->kobj));
2396 if (ret == 0) {
2397 ret = sysfs_create_link(&dev->kobj, &driver->kobj,
2398 "driver");
2399 if (ret)
2400 sysfs_remove_link(&driver->kobj,
2401 kobject_name(&dev->kobj));
2402 }
2403 return ret;
2404}
2405
2406static void ehea_driver_sysfs_remove(struct device *dev,
2407 struct device_driver *driver)
2408{
2409 struct device_driver *drv = driver;
2410
2411 if (drv) {
2412 sysfs_remove_link(&drv->kobj, kobject_name(&dev->kobj));
2413 sysfs_remove_link(&dev->kobj, "driver");
2414 }
2415}
2416
1acf2318
JBT		 2417static struct device *ehea_register_port(struct ehea_port *port,
2418 struct device_node *dn)
2419{
2420 int ret;
2421
2422 port->ofdev.node = of_node_get(dn);
2423 port->ofdev.dev.parent = &port->adapter->ebus_dev->ofdev.dev;
d1dea38d 2424 port->ofdev.dev.bus = &ibmebus_bus_type;
1acf2318 2425
d1dea38d 2426 sprintf(port->ofdev.dev.bus_id, "port%d", port_name_cnt++);
1acf2318
JBT		 2427 port->ofdev.dev.release = logical_port_release;
2428
2429 ret = of_device_register(&port->ofdev);
2430 if (ret) {
2431 ehea_error("failed to register device. ret=%d", ret);
2432 goto out;
2433 }
2434
2435 ret = device_create_file(&port->ofdev.dev, &dev_attr_log_port_id);
2436 if (ret) {
2437 ehea_error("failed to register attributes, ret=%d", ret);
2438 goto out_unreg_of_dev;
2439 }
e542aa6b 2440
d1dea38d
TK		 2441 ret = ehea_driver_sysfs_add(&port->ofdev.dev, &ehea_driver.driver);
2442 if (ret) {
2443 ehea_error("failed to register sysfs driver link");
2444 goto out_rem_dev_file;
2445 }
2446
1acf2318
JBT		 2447 return &port->ofdev.dev;
2448
d1dea38d
TK		 2449out_rem_dev_file:
2450 device_remove_file(&port->ofdev.dev, &dev_attr_log_port_id);
1acf2318
JBT		 2451out_unreg_of_dev:
2452 of_device_unregister(&port->ofdev);
2453out:
2454 return NULL;
2455}
2456
2457static void ehea_unregister_port(struct ehea_port *port)
2458{
d1dea38d 2459 ehea_driver_sysfs_remove(&port->ofdev.dev, &ehea_driver.driver);
1acf2318
JBT		 2460 device_remove_file(&port->ofdev.dev, &dev_attr_log_port_id);
2461 of_device_unregister(&port->ofdev);
2462}
2463
2464struct ehea_port *ehea_setup_single_port(struct ehea_adapter *adapter,
2465 u32 logical_port_id,
2466 struct device_node *dn)
2467{
2468 int ret;
2469 struct net_device *dev;
2470 struct ehea_port *port;
2471 struct device *port_dev;
2472 int jumbo;
2473
2474 /* allocate memory for the port structures */
2475 dev = alloc_etherdev(sizeof(struct ehea_port));
2476
2477 if (!dev) {
2478 ehea_error("no mem for net_device");
2479 ret = -ENOMEM;
2480 goto out_err;
2481 }
2482
2483 port = netdev_priv(dev);
2484
2485 sema_init(&port->port_lock, 1);
2486 port->state = EHEA_PORT_DOWN;
2487 port->sig_comp_iv = sq_entries / 10;
2488
2489 port->adapter = adapter;
2490 port->netdev = dev;
2491 port->logical_port_id = logical_port_id;
2492
2493 port->msg_enable = netif_msg_init(msg_level, EHEA_MSG_DEFAULT);
2494
2495 port->mc_list = kzalloc(sizeof(struct ehea_mc_list), GFP_KERNEL);
2496 if (!port->mc_list) {
2497 ret = -ENOMEM;
2498 goto out_free_ethdev;
2499 }
2500
2501 INIT_LIST_HEAD(&port->mc_list->list);
2502
2503 ret = ehea_sense_port_attr(port);
2504 if (ret)
2505 goto out_free_mc_list;
2506
2507 port_dev = ehea_register_port(port, dn);
2508 if (!port_dev)
2509 goto out_free_mc_list;
2510
2511 SET_NETDEV_DEV(dev, port_dev);
7a291083
JBT		 2512
2513 /* initialize net_device structure */
2514 SET_MODULE_OWNER(dev);
2515
2516 memcpy(dev->dev_addr, &port->mac_addr, ETH_ALEN);
2517
2518 dev->open = ehea_open;
2519 dev->poll = ehea_poll;
2520 dev->weight = 64;
2521 dev->stop = ehea_stop;
2522 dev->hard_start_xmit = ehea_start_xmit;
2523 dev->get_stats = ehea_get_stats;
2524 dev->set_multicast_list = ehea_set_multicast_list;
2525 dev->set_mac_address = ehea_set_mac_addr;
2526 dev->change_mtu = ehea_change_mtu;
2527 dev->vlan_rx_register = ehea_vlan_rx_register;
2528 dev->vlan_rx_add_vid = ehea_vlan_rx_add_vid;
2529 dev->vlan_rx_kill_vid = ehea_vlan_rx_kill_vid;
2530 dev->features = NETIF_F_SG | NETIF_F_FRAGLIST | NETIF_F_TSO
2531 | NETIF_F_HIGHDMA | NETIF_F_HW_CSUM | NETIF_F_HW_VLAN_TX
2532 | NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_FILTER
2533 | NETIF_F_LLTX;
2534 dev->tx_timeout = &ehea_tx_watchdog;
2535 dev->watchdog_timeo = EHEA_WATCH_DOG_TIMEOUT;
2536
c4028958 2537 INIT_WORK(&port->reset_task, ehea_reset_port);
7a291083
JBT		 2538
2539 ehea_set_ethtool_ops(dev);
2540
2541 ret = register_netdev(dev);
2542 if (ret) {
2543 ehea_error("register_netdev failed. ret=%d", ret);
1acf2318 2544 goto out_unreg_port;
7a291083
JBT		 2545 }
2546
1acf2318 2547 ret = ehea_get_jumboframe_status(port, &jumbo);
e542aa6b 2548 if (ret)
1acf2318
JBT		 2549 ehea_error("failed determining jumbo frame status for %s",
2550 port->netdev->name);
2551
9c750b7d
TK		 2552 ehea_info("%s: Jumbo frames are %sabled", dev->name,
2553 jumbo == 1 ? "en" : "dis");
2554
1acf2318 2555 return port;
7a291083 2556
1acf2318
JBT		 2557out_unreg_port:
2558 ehea_unregister_port(port);
2559
2560out_free_mc_list:
7a291083 2561 kfree(port->mc_list);
1acf2318
JBT		 2562
2563out_free_ethdev:
2564 free_netdev(dev);
2565
2566out_err:
2567 ehea_error("setting up logical port with id=%d failed, ret=%d",
2568 logical_port_id, ret);
2569 return NULL;
2570}
2571
2572static void ehea_shutdown_single_port(struct ehea_port *port)
2573{
2574 unregister_netdev(port->netdev);
2575 ehea_unregister_port(port);
2576 kfree(port->mc_list);
2577 free_netdev(port->netdev);
7a291083
JBT		 2578}
2579
2580static int ehea_setup_ports(struct ehea_adapter *adapter)
2581{
1acf2318
JBT		 2582 struct device_node *lhea_dn;
2583 struct device_node *eth_dn = NULL;
2584
2585 u32 *dn_log_port_id;
7a291083 2586 int port_setup_ok = 0;
1acf2318
JBT		 2587 int i = 0;
2588
2589 lhea_dn = adapter->ebus_dev->ofdev.node;
1eef4e04 2590 while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) {
e542aa6b 2591
1acf2318
JBT		 2592 dn_log_port_id = (u32*)get_property(eth_dn, "ibm,hea-port-no",
2593 NULL);
2594 if (!dn_log_port_id) {
2595 ehea_error("bad device node: eth_dn name=%s",
2596 eth_dn->full_name);
2597 continue;
2598 }
7a291083 2599
1acf2318
JBT		 2600 adapter->port[i] = ehea_setup_single_port(adapter,
2601 *dn_log_port_id,
2602 eth_dn);
7a291083 2603 if (adapter->port[i])
1acf2318 2604 ehea_info("%s -> logical port id #%d",
e542aa6b 2605 adapter->port[i]->netdev->name,
1acf2318
JBT		 2606 *dn_log_port_id);
2607 i++;
1eef4e04 2608 };
7a291083 2609
1acf2318
JBT		 2610 /* Check for succesfully set up ports */
2611 for (i = 0; i < EHEA_MAX_PORTS; i++)
2612 if (adapter->port[i])
2613 port_setup_ok++;
7a291083 2614
1acf2318
JBT		 2615 if (port_setup_ok)
2616 return 0; /* At least some ports are setup correctly */
2617
2618 return -EINVAL;
2619}
2620
e542aa6b
JBT		 2621static struct device_node *ehea_get_eth_dn(struct ehea_adapter *adapter,
2622 u32 logical_port_id)
1acf2318
JBT		 2623{
2624 struct device_node *lhea_dn;
2625 struct device_node *eth_dn = NULL;
2626 u32 *dn_log_port_id;
2627
2628 lhea_dn = adapter->ebus_dev->ofdev.node;
1eef4e04 2629 while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) {
e542aa6b 2630
1acf2318
JBT		 2631 dn_log_port_id = (u32*)get_property(eth_dn, "ibm,hea-port-no",
2632 NULL);
1acf2318
JBT		 2633 if (dn_log_port_id)
2634 if (*dn_log_port_id == logical_port_id)
2635 return eth_dn;
1eef4e04 2636 };
1acf2318
JBT		 2637
2638 return NULL;
2639}
2640
2641static ssize_t ehea_probe_port(struct device *dev,
2642 struct device_attribute *attr,
2643 const char *buf, size_t count)
2644{
2645 struct ehea_adapter *adapter = dev->driver_data;
2646 struct ehea_port *port;
2647 struct device_node *eth_dn = NULL;
2648 int i;
2649
2650 u32 logical_port_id;
2651
2652 sscanf(buf, "%X", &logical_port_id);
2653
2654 port = ehea_get_port(adapter, logical_port_id);
2655
2656 if (port) {
2657 ehea_info("adding port with logical port id=%d failed. port "
2658 "already configured as %s.", logical_port_id,
2659 port->netdev->name);
2660 return -EINVAL;
7a291083 2661 }
e542aa6b 2662
1acf2318 2663 eth_dn = ehea_get_eth_dn(adapter, logical_port_id);
7a291083 2664
1acf2318
JBT		 2665 if (!eth_dn) {
2666 ehea_info("no logical port with id %d found", logical_port_id);
2667 return -EINVAL;
2668 }
e542aa6b 2669
1acf2318 2670 port = ehea_setup_single_port(adapter, logical_port_id, eth_dn);
7a291083 2671
1eef4e04
JBT		 2672 of_node_put(eth_dn);
2673
1acf2318
JBT		 2674 if (port) {
2675 for (i=0; i < EHEA_MAX_PORTS; i++)
2676 if (!adapter->port[i]) {
2677 adapter->port[i] = port;
2678 break;
2679 }
7a291083 2680
1acf2318
JBT		 2681 ehea_info("added %s (logical port id=%d)", port->netdev->name,
2682 logical_port_id);
e542aa6b
JBT		 2683 } else
2684 return -EIO;
7a291083 2685
1acf2318
JBT		 2686 return (ssize_t) count;
2687}
2688
2689static ssize_t ehea_remove_port(struct device *dev,
2690 struct device_attribute *attr,
2691 const char *buf, size_t count)
2692{
2693 struct ehea_adapter *adapter = dev->driver_data;
2694 struct ehea_port *port;
2695 int i;
2696 u32 logical_port_id;
2697
2698 sscanf(buf, "%X", &logical_port_id);
2699
2700 port = ehea_get_port(adapter, logical_port_id);
2701
2702 if (port) {
2703 ehea_info("removed %s (logical port id=%d)", port->netdev->name,
2704 logical_port_id);
2705
2706 ehea_shutdown_single_port(port);
2707
2708 for (i=0; i < EHEA_MAX_PORTS; i++)
2709 if (adapter->port[i] == port) {
2710 adapter->port[i] = NULL;
2711 break;
2712 }
2713 } else {
2714 ehea_error("removing port with logical port id=%d failed. port "
2715 "not configured.", logical_port_id);
2716 return -EINVAL;
2717 }
2718
2719 return (ssize_t) count;
2720}
2721
2722static DEVICE_ATTR(probe_port, S_IWUSR, NULL, ehea_probe_port);
2723static DEVICE_ATTR(remove_port, S_IWUSR, NULL, ehea_remove_port);
2724
2725int ehea_create_device_sysfs(struct ibmebus_dev *dev)
2726{
2727 int ret = device_create_file(&dev->ofdev.dev, &dev_attr_probe_port);
2728 if (ret)
2729 goto out;
2730
2731 ret = device_create_file(&dev->ofdev.dev, &dev_attr_remove_port);
2732out:
7a291083
JBT		 2733 return ret;
2734}
2735
1acf2318
JBT		 2736void ehea_remove_device_sysfs(struct ibmebus_dev *dev)
2737{
2738 device_remove_file(&dev->ofdev.dev, &dev_attr_probe_port);
2739 device_remove_file(&dev->ofdev.dev, &dev_attr_remove_port);
2740}
2741
2742static int __devinit ehea_probe_adapter(struct ibmebus_dev *dev,
2743 const struct of_device_id *id)
7a291083
JBT		 2744{
2745 struct ehea_adapter *adapter;
2746 u64 *adapter_handle;
2747 int ret;
2748
1eef4e04
JBT		 2749 if (!dev || !dev->ofdev.node) {
2750 ehea_error("Invalid ibmebus device probed");
2751 return -EINVAL;
2752 }
2753
7a291083
JBT		 2754 adapter = kzalloc(sizeof(*adapter), GFP_KERNEL);
2755 if (!adapter) {
2756 ret = -ENOMEM;
2757 dev_err(&dev->ofdev.dev, "no mem for ehea_adapter\n");
2758 goto out;
2759 }
2760
1acf2318
JBT		 2761 adapter->ebus_dev = dev;
2762
7a291083
JBT		 2763 adapter_handle = (u64*)get_property(dev->ofdev.node, "ibm,hea-handle",
2764 NULL);
061bf3cd
TK		 2765 if (adapter_handle)
2766 adapter->handle = *adapter_handle;
2767
2768 if (!adapter->handle) {
7a291083
JBT		 2769 dev_err(&dev->ofdev.dev, "failed getting handle for adapter"
2770 " '%s'\n", dev->ofdev.node->full_name);
2771 ret = -ENODEV;
2772 goto out_free_ad;
2773 }
2774
7a291083
JBT		 2775 adapter->pd = EHEA_PD_ID;
2776
2777 dev->ofdev.dev.driver_data = adapter;
2778
e542aa6b 2779 ret = ehea_reg_kernel_mr(adapter, &adapter->mr);
7a291083
JBT		 2780 if (ret) {
2781 dev_err(&dev->ofdev.dev, "reg_mr_adapter failed\n");
2782 goto out_free_ad;
2783 }
2784
2785 /* initialize adapter and ports */
2786 /* get adapter properties */
2787 ret = ehea_sense_adapter_attr(adapter);
2788 if (ret) {
2789 dev_err(&dev->ofdev.dev, "sense_adapter_attr failed: %d", ret);
2790 goto out_free_res;
2791 }
7a291083
JBT		 2792
2793 adapter->neq = ehea_create_eq(adapter,
2794 EHEA_NEQ, EHEA_MAX_ENTRIES_EQ, 1);
2795 if (!adapter->neq) {
1eef4e04 2796 ret = -EIO;
7a291083
JBT		 2797 dev_err(&dev->ofdev.dev, "NEQ creation failed");
2798 goto out_free_res;
2799 }
2800
2801 tasklet_init(&adapter->neq_tasklet, ehea_neq_tasklet,
2802 (unsigned long)adapter);
2803
2804 ret = ibmebus_request_irq(NULL, adapter->neq->attr.ist1,
38515e90 2805 ehea_interrupt_neq, IRQF_DISABLED,
7a291083
JBT		 2806 "ehea_neq", adapter);
2807 if (ret) {
2808 dev_err(&dev->ofdev.dev, "requesting NEQ IRQ failed");
2809 goto out_kill_eq;
2810 }
2811
2812 adapter->ehea_wq = create_workqueue("ehea_wq");
1eef4e04
JBT		 2813 if (!adapter->ehea_wq) {
2814 ret = -EIO;
7a291083 2815 goto out_free_irq;
1eef4e04 2816 }
7a291083 2817
1eef4e04
JBT		 2818 ret = ehea_create_device_sysfs(dev);
2819 if (ret)
1acf2318
JBT		 2820 goto out_kill_wq;
2821
7a291083
JBT		 2822 ret = ehea_setup_ports(adapter);
2823 if (ret) {
2824 dev_err(&dev->ofdev.dev, "setup_ports failed");
1acf2318 2825 goto out_rem_dev_sysfs;
7a291083
JBT		 2826 }
2827
2828 ret = 0;
2829 goto out;
2830
1acf2318
JBT		 2831out_rem_dev_sysfs:
2832 ehea_remove_device_sysfs(dev);
2833
7a291083
JBT		 2834out_kill_wq:
2835 destroy_workqueue(adapter->ehea_wq);
2836
2837out_free_irq:
2838 ibmebus_free_irq(NULL, adapter->neq->attr.ist1, adapter);
2839
2840out_kill_eq:
2841 ehea_destroy_eq(adapter->neq);
2842
2843out_free_res:
e542aa6b 2844 ehea_rem_mr(&adapter->mr);
7a291083
JBT		 2845
2846out_free_ad:
2847 kfree(adapter);
2848out:
2849 return ret;
2850}
2851
7a291083
JBT		 2852static int __devexit ehea_remove(struct ibmebus_dev *dev)
2853{
2854 struct ehea_adapter *adapter = dev->ofdev.dev.driver_data;
7a291083
JBT		 2855 int i;
2856
1acf2318 2857 for (i = 0; i < EHEA_MAX_PORTS; i++)
7a291083
JBT		 2858 if (adapter->port[i]) {
2859 ehea_shutdown_single_port(adapter->port[i]);
2860 adapter->port[i] = NULL;
2861 }
1acf2318
JBT		 2862
2863 ehea_remove_device_sysfs(dev);
2864
7a291083
JBT		 2865 destroy_workqueue(adapter->ehea_wq);
2866
2867 ibmebus_free_irq(NULL, adapter->neq->attr.ist1, adapter);
d4150a27 2868 tasklet_kill(&adapter->neq_tasklet);
7a291083
JBT		 2869
2870 ehea_destroy_eq(adapter->neq);
e542aa6b 2871 ehea_rem_mr(&adapter->mr);
7a291083
JBT		 2872 kfree(adapter);
2873 return 0;
2874}
2875
2876static int check_module_parm(void)
2877{
2878 int ret = 0;
2879
2880 if ((rq1_entries < EHEA_MIN_ENTRIES_QP) ||
2881 (rq1_entries > EHEA_MAX_ENTRIES_RQ1)) {
2882 ehea_info("Bad parameter: rq1_entries");
2883 ret = -EINVAL;
2884 }
2885 if ((rq2_entries < EHEA_MIN_ENTRIES_QP) ||
2886 (rq2_entries > EHEA_MAX_ENTRIES_RQ2)) {
2887 ehea_info("Bad parameter: rq2_entries");
2888 ret = -EINVAL;
2889 }
2890 if ((rq3_entries < EHEA_MIN_ENTRIES_QP) ||
2891 (rq3_entries > EHEA_MAX_ENTRIES_RQ3)) {
2892 ehea_info("Bad parameter: rq3_entries");
2893 ret = -EINVAL;
2894 }
2895 if ((sq_entries < EHEA_MIN_ENTRIES_QP) ||
2896 (sq_entries > EHEA_MAX_ENTRIES_SQ)) {
2897 ehea_info("Bad parameter: sq_entries");
2898 ret = -EINVAL;
2899 }
2900
2901 return ret;
2902}
2903
7a291083
JBT		 2904int __init ehea_module_init(void)
2905{
2906 int ret;
2907
2908 printk(KERN_INFO "IBM eHEA ethernet device driver (Release %s)\n",
2909 DRV_VERSION);
2910
2911 ret = check_module_parm();
2912 if (ret)
2913 goto out;
2914 ret = ibmebus_register_driver(&ehea_driver);
2915 if (ret)
2916 ehea_error("failed registering eHEA device driver on ebus");
2917
2918out:
2919 return ret;
2920}
2921
2922static void __exit ehea_module_exit(void)
2923{
2924 ibmebus_unregister_driver(&ehea_driver);
2925}
2926
2927module_init(ehea_module_init);
2928module_exit(ehea_module_exit);
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