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ehea: Modified initial autoneg state determination
[deliverable/linux.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;
54
55module_param(msg_level, int, 0);
56module_param(rq1_entries, int, 0);
57module_param(rq2_entries, int, 0);
58module_param(rq3_entries, int, 0);
59module_param(sq_entries, int, 0);
60
61MODULE_PARM_DESC(msg_level, "msg_level");
62MODULE_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) ")");
65MODULE_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) ")");
68MODULE_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) ")");
71MODULE_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
75void 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
85static 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
a1d261c5 95 cb2 = kzalloc(PAGE_SIZE, GFP_KERNEL);
7a291083
JBT		 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
123out_herr:
124 kfree(cb2);
125out:
126 return stats;
127}
128
129static 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
156static 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);
174out:
175 return ret;
176}
177
178static 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
233static 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
241static 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
248static 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
259static 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
269static 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
295static 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
318static 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
348static 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
461void 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
483void 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
7d12e780 539static irqreturn_t ehea_send_irq_handler(int irq, void *param)
7a291083
JBT		 540{
541 struct ehea_port_res *pr = param;
542 tasklet_hi_schedule(&pr->send_comp_task);
543 return IRQ_HANDLED;
544}
545
7d12e780 546static irqreturn_t ehea_recv_irq_handler(int irq, void *param)
7a291083
JBT		 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
7d12e780 554static irqreturn_t ehea_qp_aff_irq_handler(int irq, void *param)
7a291083
JBT		 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
572static 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
583int ehea_sense_port_attr(struct ehea_port *port)
584{
585 int ret;
586 u64 hret;
587 struct hcp_ehea_port_cb0 *cb0;
588
a1d261c5
TK		 589 cb0 = kzalloc(PAGE_SIZE, GFP_ATOMIC); /* May be called via */
590 if (!cb0) { /* ehea_neq_tasklet() */
7a291083
JBT		 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
e919b593
TK		 645 port->autoneg = 1;
646
7a291083
JBT		 647 /* Number of default QPs */
648 port->num_def_qps = cb0->num_default_qps;
649
650 if (!port->num_def_qps) {
651 ret = -EINVAL;
652 goto out_free;
653 }
654
655 if (port->num_def_qps >= EHEA_NUM_TX_QP)
656 port->num_add_tx_qps = 0;
657 else
658 port->num_add_tx_qps = EHEA_NUM_TX_QP - port->num_def_qps;
659
660 ret = 0;
661out_free:
662 if (ret || netif_msg_probe(port))
663 ehea_dump(cb0, sizeof(*cb0), "ehea_sense_port_attr");
664 kfree(cb0);
665out:
666 return ret;
667}
668
669int ehea_set_portspeed(struct ehea_port *port, u32 port_speed)
670{
671 struct hcp_ehea_port_cb4 *cb4;
672 u64 hret;
673 int ret = 0;
674
a1d261c5 675 cb4 = kzalloc(PAGE_SIZE, GFP_KERNEL);
7a291083
JBT		 676 if (!cb4) {
677 ehea_error("no mem for cb4");
678 ret = -ENOMEM;
679 goto out;
680 }
681
682 cb4->port_speed = port_speed;
683
684 netif_carrier_off(port->netdev);
685
686 hret = ehea_h_modify_ehea_port(port->adapter->handle,
687 port->logical_port_id,
688 H_PORT_CB4, H_PORT_CB4_SPEED, cb4);
689 if (hret == H_SUCCESS) {
690 port->autoneg = port_speed == EHEA_SPEED_AUTONEG ? 1 : 0;
691
692 hret = ehea_h_query_ehea_port(port->adapter->handle,
693 port->logical_port_id,
694 H_PORT_CB4, H_PORT_CB4_SPEED,
695 cb4);
696 if (hret == H_SUCCESS) {
697 switch (cb4->port_speed) {
698 case H_SPEED_10M_H:
699 port->port_speed = EHEA_SPEED_10M;
700 port->full_duplex = 0;
701 break;
702 case H_SPEED_10M_F:
703 port->port_speed = EHEA_SPEED_10M;
704 port->full_duplex = 1;
705 break;
706 case H_SPEED_100M_H:
707 port->port_speed = EHEA_SPEED_100M;
708 port->full_duplex = 0;
709 break;
710 case H_SPEED_100M_F:
711 port->port_speed = EHEA_SPEED_100M;
712 port->full_duplex = 1;
713 break;
714 case H_SPEED_1G_F:
715 port->port_speed = EHEA_SPEED_1G;
716 port->full_duplex = 1;
717 break;
718 case H_SPEED_10G_F:
719 port->port_speed = EHEA_SPEED_10G;
720 port->full_duplex = 1;
721 break;
722 default:
723 port->port_speed = 0;
724 port->full_duplex = 0;
725 break;
726 }
727 } else {
728 ehea_error("Failed sensing port speed");
729 ret = -EIO;
730 }
731 } else {
732 if (hret == H_AUTHORITY) {
733 ehea_info("Hypervisor denied setting port speed. Either"
734 " this partition is not authorized to set "
735 "port speed or another partition has modified"
736 " port speed first.");
737 ret = -EPERM;
738 } else {
739 ret = -EIO;
740 ehea_error("Failed setting port speed");
741 }
742 }
743 netif_carrier_on(port->netdev);
744 kfree(cb4);
745out:
746 return ret;
747}
748
749static void ehea_parse_eqe(struct ehea_adapter *adapter, u64 eqe)
750{
751 int ret;
752 u8 ec;
753 u8 portnum;
754 struct ehea_port *port;
755
756 ec = EHEA_BMASK_GET(NEQE_EVENT_CODE, eqe);
757 portnum = EHEA_BMASK_GET(NEQE_PORTNUM, eqe);
758 port = ehea_get_port(adapter, portnum);
759
760 switch (ec) {
761 case EHEA_EC_PORTSTATE_CHG: /* port state change */
762
763 if (!port) {
764 ehea_error("unknown portnum %x", portnum);
765 break;
766 }
767
768 if (EHEA_BMASK_GET(NEQE_PORT_UP, eqe)) {
769 if (!netif_carrier_ok(port->netdev)) {
1e1675cc 770 ret = ehea_sense_port_attr(port);
7a291083
JBT		 771 if (ret) {
772 ehea_error("failed resensing port "
773 "attributes");
774 break;
775 }
776
777 if (netif_msg_link(port))
778 ehea_info("%s: Logical port up: %dMbps "
779 "%s Duplex",
780 port->netdev->name,
781 port->port_speed,
782 port->full_duplex ==
783 1 ? "Full" : "Half");
784
785 netif_carrier_on(port->netdev);
786 netif_wake_queue(port->netdev);
787 }
788 } else
789 if (netif_carrier_ok(port->netdev)) {
790 if (netif_msg_link(port))
791 ehea_info("%s: Logical port down",
792 port->netdev->name);
793 netif_carrier_off(port->netdev);
794 netif_stop_queue(port->netdev);
795 }
796
797 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PORT_UP, eqe)) {
798 if (netif_msg_link(port))
799 ehea_info("%s: Physical port up",
800 port->netdev->name);
801 } else {
802 if (netif_msg_link(port))
803 ehea_info("%s: Physical port down",
804 port->netdev->name);
805 }
806
807 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PRIMARY, eqe))
808 ehea_info("External switch port is primary port");
809 else
810 ehea_info("External switch port is backup port");
811
812 break;
813 case EHEA_EC_ADAPTER_MALFUNC:
814 ehea_error("Adapter malfunction");
815 break;
816 case EHEA_EC_PORT_MALFUNC:
817 ehea_info("Port malfunction: Device: %s", port->netdev->name);
818 netif_carrier_off(port->netdev);
819 netif_stop_queue(port->netdev);
820 break;
821 default:
bff0a55f 822 ehea_error("unknown event code %x, eqe=0x%lX", ec, eqe);
7a291083
JBT		 823 break;
824 }
825}
826
827static void ehea_neq_tasklet(unsigned long data)
828{
829 struct ehea_adapter *adapter = (struct ehea_adapter*)data;
830 struct ehea_eqe *eqe;
831 u64 event_mask;
832
833 eqe = ehea_poll_eq(adapter->neq);
834 ehea_debug("eqe=%p", eqe);
835
836 while (eqe) {
837 ehea_debug("*eqe=%lx", eqe->entry);
838 ehea_parse_eqe(adapter, eqe->entry);
839 eqe = ehea_poll_eq(adapter->neq);
840 ehea_debug("next eqe=%p", eqe);
841 }
842
843 event_mask = EHEA_BMASK_SET(NELR_PORTSTATE_CHG, 1)
844 | EHEA_BMASK_SET(NELR_ADAPTER_MALFUNC, 1)
845 | EHEA_BMASK_SET(NELR_PORT_MALFUNC, 1);
846
847 ehea_h_reset_events(adapter->handle,
848 adapter->neq->fw_handle, event_mask);
849}
850
7d12e780 851static irqreturn_t ehea_interrupt_neq(int irq, void *param)
7a291083
JBT		 852{
853 struct ehea_adapter *adapter = param;
854 tasklet_hi_schedule(&adapter->neq_tasklet);
855 return IRQ_HANDLED;
856}
857
858
859static int ehea_fill_port_res(struct ehea_port_res *pr)
860{
861 int ret;
862 struct ehea_qp_init_attr *init_attr = &pr->qp->init_attr;
863
864 ret = ehea_init_fill_rq1(pr, init_attr->act_nr_rwqes_rq1
865 - init_attr->act_nr_rwqes_rq2
866 - init_attr->act_nr_rwqes_rq3 - 1);
867
868 ret |= ehea_refill_rq2(pr, init_attr->act_nr_rwqes_rq2 - 1);
869
870 ret |= ehea_refill_rq3(pr, init_attr->act_nr_rwqes_rq3 - 1);
871
872 return ret;
873}
874
875static int ehea_reg_interrupts(struct net_device *dev)
876{
877 struct ehea_port *port = netdev_priv(dev);
878 struct ehea_port_res *pr;
879 int i, ret;
880
881 for (i = 0; i < port->num_def_qps; i++) {
882 pr = &port->port_res[i];
883 snprintf(pr->int_recv_name, EHEA_IRQ_NAME_SIZE - 1
884 , "%s-recv%d", dev->name, i);
885 ret = ibmebus_request_irq(NULL, pr->recv_eq->attr.ist1,
886 ehea_recv_irq_handler,
887 SA_INTERRUPT, pr->int_recv_name, pr);
888 if (ret) {
889 ehea_error("failed registering irq for ehea_recv_int:"
890 "port_res_nr:%d, ist=%X", i,
891 pr->recv_eq->attr.ist1);
892 goto out_free_seq;
893 }
894 if (netif_msg_ifup(port))
895 ehea_info("irq_handle 0x%X for funct ehea_recv_int %d "
896 "registered", pr->recv_eq->attr.ist1, i);
897 }
898
899 snprintf(port->int_aff_name, EHEA_IRQ_NAME_SIZE - 1, "%s-aff",
900 dev->name);
901
902 ret = ibmebus_request_irq(NULL, port->qp_eq->attr.ist1,
903 ehea_qp_aff_irq_handler,
904 SA_INTERRUPT, port->int_aff_name, port);
905 if (ret) {
906 ehea_error("failed registering irq for qp_aff_irq_handler:"
907 "ist=%X", port->qp_eq->attr.ist1);
908 goto out_free_qpeq;
909 }
910
911 if (netif_msg_ifup(port))
912 ehea_info("irq_handle 0x%X for function qp_aff_irq_handler "
913 "registered", port->qp_eq->attr.ist1);
914
915 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
916 pr = &port->port_res[i];
917 snprintf(pr->int_send_name, EHEA_IRQ_NAME_SIZE - 1,
918 "%s-send%d", dev->name, i);
919 ret = ibmebus_request_irq(NULL, pr->send_eq->attr.ist1,
920 ehea_send_irq_handler,
921 SA_INTERRUPT, pr->int_send_name,
922 pr);
923 if (ret) {
924 ehea_error("failed registering irq for ehea_send "
925 "port_res_nr:%d, ist=%X", i,
926 pr->send_eq->attr.ist1);
927 goto out_free_req;
928 }
929 if (netif_msg_ifup(port))
930 ehea_info("irq_handle 0x%X for function ehea_send_int "
931 "%d registered", pr->send_eq->attr.ist1, i);
932 }
933out:
934 return ret;
935
936out_free_req:
937 while (--i >= 0) {
938 u32 ist = port->port_res[i].send_eq->attr.ist1;
939 ibmebus_free_irq(NULL, ist, &port->port_res[i]);
940 }
941out_free_qpeq:
942 ibmebus_free_irq(NULL, port->qp_eq->attr.ist1, port);
943 i = port->num_def_qps;
944out_free_seq:
945 while (--i >= 0) {
946 u32 ist = port->port_res[i].recv_eq->attr.ist1;
947 ibmebus_free_irq(NULL, ist, &port->port_res[i]);
948 }
949 goto out;
950}
951
952static void ehea_free_interrupts(struct net_device *dev)
953{
954 struct ehea_port *port = netdev_priv(dev);
955 struct ehea_port_res *pr;
956 int i;
957
958 /* send */
959 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
960 pr = &port->port_res[i];
961 ibmebus_free_irq(NULL, pr->send_eq->attr.ist1, pr);
962 if (netif_msg_intr(port))
963 ehea_info("free send irq for res %d with handle 0x%X",
964 i, pr->send_eq->attr.ist1);
965 }
966
967 /* receive */
968 for (i = 0; i < port->num_def_qps; i++) {
969 pr = &port->port_res[i];
970 ibmebus_free_irq(NULL, pr->recv_eq->attr.ist1, pr);
971 if (netif_msg_intr(port))
972 ehea_info("free recv irq for res %d with handle 0x%X",
973 i, pr->recv_eq->attr.ist1);
974 }
975
976 /* associated events */
977 ibmebus_free_irq(NULL, port->qp_eq->attr.ist1, port);
978 if (netif_msg_intr(port))
979 ehea_info("associated event interrupt for handle 0x%X freed",
980 port->qp_eq->attr.ist1);
981}
982
983static int ehea_configure_port(struct ehea_port *port)
984{
985 int ret, i;
986 u64 hret, mask;
987 struct hcp_ehea_port_cb0 *cb0;
988
989 ret = -ENOMEM;
a1d261c5 990 cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL);
7a291083
JBT		 991 if (!cb0)
992 goto out;
993
994 cb0->port_rc = EHEA_BMASK_SET(PXLY_RC_VALID, 1)
995 | EHEA_BMASK_SET(PXLY_RC_IP_CHKSUM, 1)
996 | EHEA_BMASK_SET(PXLY_RC_TCP_UDP_CHKSUM, 1)
997 | EHEA_BMASK_SET(PXLY_RC_VLAN_XTRACT, 1)
998 | EHEA_BMASK_SET(PXLY_RC_VLAN_TAG_FILTER,
999 PXLY_RC_VLAN_FILTER)
1000 | EHEA_BMASK_SET(PXLY_RC_JUMBO_FRAME, 1);
1001
1002 for (i = 0; i < port->num_def_qps; i++)
602e0d10 1003 cb0->default_qpn_arr[i] = port->port_res[0].qp->init_attr.qp_nr;
7a291083
JBT		 1004
1005 if (netif_msg_ifup(port))
1006 ehea_dump(cb0, sizeof(*cb0), "ehea_configure_port");
1007
1008 mask = EHEA_BMASK_SET(H_PORT_CB0_PRC, 1)
1009 | EHEA_BMASK_SET(H_PORT_CB0_DEFQPNARRAY, 1);
1010
1011 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1012 port->logical_port_id,
1013 H_PORT_CB0, mask, cb0);
1014 ret = -EIO;
1015 if (hret != H_SUCCESS)
1016 goto out_free;
1017
1018 ret = 0;
1019
1020out_free:
1021 kfree(cb0);
1022out:
1023 return ret;
1024}
1025
1026static int ehea_gen_smrs(struct ehea_port_res *pr)
1027{
1028 u64 hret;
1029 struct ehea_adapter *adapter = pr->port->adapter;
1030
1031 hret = ehea_h_register_smr(adapter->handle, adapter->mr.handle,
1032 adapter->mr.vaddr, EHEA_MR_ACC_CTRL,
1033 adapter->pd, &pr->send_mr);
1034 if (hret != H_SUCCESS)
1035 goto out;
1036
1037 hret = ehea_h_register_smr(adapter->handle, adapter->mr.handle,
1038 adapter->mr.vaddr, EHEA_MR_ACC_CTRL,
1039 adapter->pd, &pr->recv_mr);
1040 if (hret != H_SUCCESS)
1041 goto out_freeres;
1042
1043 return 0;
1044
1045out_freeres:
1046 hret = ehea_h_free_resource(adapter->handle, pr->send_mr.handle);
1047 if (hret != H_SUCCESS)
1048 ehea_error("failed freeing SMR");
1049out:
1050 return -EIO;
1051}
1052
1053static int ehea_rem_smrs(struct ehea_port_res *pr)
1054{
1055 struct ehea_adapter *adapter = pr->port->adapter;
1056 int ret = 0;
1057 u64 hret;
1058
1059 hret = ehea_h_free_resource(adapter->handle, pr->send_mr.handle);
1060 if (hret != H_SUCCESS) {
1061 ret = -EIO;
1062 ehea_error("failed freeing send SMR for pr=%p", pr);
1063 }
1064
1065 hret = ehea_h_free_resource(adapter->handle, pr->recv_mr.handle);
1066 if (hret != H_SUCCESS) {
1067 ret = -EIO;
1068 ehea_error("failed freeing recv SMR for pr=%p", pr);
1069 }
1070
1071 return ret;
1072}
1073
1074static int ehea_init_q_skba(struct ehea_q_skb_arr *q_skba, int max_q_entries)
1075{
1076 int arr_size = sizeof(void*) * max_q_entries;
1077
1078 q_skba->arr = vmalloc(arr_size);
1079 if (!q_skba->arr)
1080 return -ENOMEM;
1081
1082 memset(q_skba->arr, 0, arr_size);
1083
1084 q_skba->len = max_q_entries;
1085 q_skba->index = 0;
1086 q_skba->os_skbs = 0;
1087
1088 return 0;
1089}
1090
1091static int ehea_init_port_res(struct ehea_port *port, struct ehea_port_res *pr,
1092 struct port_res_cfg *pr_cfg, int queue_token)
1093{
1094 struct ehea_adapter *adapter = port->adapter;
1095 enum ehea_eq_type eq_type = EHEA_EQ;
1096 struct ehea_qp_init_attr *init_attr = NULL;
1097 int ret = -EIO;
1098
1099 memset(pr, 0, sizeof(struct ehea_port_res));
1100
1101 pr->port = port;
1102 spin_lock_init(&pr->send_lock);
1103 spin_lock_init(&pr->recv_lock);
1104 spin_lock_init(&pr->xmit_lock);
1105 spin_lock_init(&pr->netif_queue);
1106
1107 pr->recv_eq = ehea_create_eq(adapter, eq_type, EHEA_MAX_ENTRIES_EQ, 0);
1108 if (!pr->recv_eq) {
1109 ehea_error("create_eq failed (recv_eq)");
1110 goto out_free;
1111 }
1112
1113 pr->send_eq = ehea_create_eq(adapter, eq_type, EHEA_MAX_ENTRIES_EQ, 0);
1114 if (!pr->send_eq) {
1115 ehea_error("create_eq failed (send_eq)");
1116 goto out_free;
1117 }
1118
1119 pr->recv_cq = ehea_create_cq(adapter, pr_cfg->max_entries_rcq,
1120 pr->recv_eq->fw_handle,
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,
1128 pr->send_eq->fw_handle,
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 }
1193 tasklet_init(&pr->send_comp_task, ehea_send_irq_tasklet,
1194 (unsigned long)pr);
1195 atomic_set(&pr->swqe_avail, init_attr->act_nr_send_wqes - 1);
1196
1197 kfree(init_attr);
1198 ret = 0;
1199 goto out;
1200
1201out_free:
1202 kfree(init_attr);
1203 vfree(pr->sq_skba.arr);
1204 vfree(pr->rq1_skba.arr);
1205 vfree(pr->rq2_skba.arr);
1206 vfree(pr->rq3_skba.arr);
1207 ehea_destroy_qp(pr->qp);
1208 ehea_destroy_cq(pr->send_cq);
1209 ehea_destroy_cq(pr->recv_cq);
1210 ehea_destroy_eq(pr->send_eq);
1211 ehea_destroy_eq(pr->recv_eq);
1212out:
1213 return ret;
1214}
1215
1216static int ehea_clean_portres(struct ehea_port *port, struct ehea_port_res *pr)
1217{
1218 int ret, i;
1219
1220 ret = ehea_destroy_qp(pr->qp);
1221
1222 if (!ret) {
1223 ehea_destroy_cq(pr->send_cq);
1224 ehea_destroy_cq(pr->recv_cq);
1225 ehea_destroy_eq(pr->send_eq);
1226 ehea_destroy_eq(pr->recv_eq);
1227
1228 for (i = 0; i < pr->rq1_skba.len; i++)
1229 if (pr->rq1_skba.arr[i])
1230 dev_kfree_skb(pr->rq1_skba.arr[i]);
1231
1232 for (i = 0; i < pr->rq2_skba.len; i++)
1233 if (pr->rq2_skba.arr[i])
1234 dev_kfree_skb(pr->rq2_skba.arr[i]);
1235
1236 for (i = 0; i < pr->rq3_skba.len; i++)
1237 if (pr->rq3_skba.arr[i])
1238 dev_kfree_skb(pr->rq3_skba.arr[i]);
1239
1240 for (i = 0; i < pr->sq_skba.len; i++)
1241 if (pr->sq_skba.arr[i])
1242 dev_kfree_skb(pr->sq_skba.arr[i]);
1243
1244 vfree(pr->rq1_skba.arr);
1245 vfree(pr->rq2_skba.arr);
1246 vfree(pr->rq3_skba.arr);
1247 vfree(pr->sq_skba.arr);
1248 ret = ehea_rem_smrs(pr);
1249 }
1250 return ret;
1251}
1252
1253/*
1254 * The write_* functions store information in swqe which is used by
1255 * the hardware to calculate the ip/tcp/udp checksum
1256 */
1257
1258static inline void write_ip_start_end(struct ehea_swqe *swqe,
1259 const struct sk_buff *skb)
1260{
1261 swqe->ip_start = (u8)(((u64)skb->nh.iph) - ((u64)skb->data));
1262 swqe->ip_end = (u8)(swqe->ip_start + skb->nh.iph->ihl * 4 - 1);
1263}
1264
1265static inline void write_tcp_offset_end(struct ehea_swqe *swqe,
1266 const struct sk_buff *skb)
1267{
1268 swqe->tcp_offset =
1269 (u8)(swqe->ip_end + 1 + offsetof(struct tcphdr, check));
1270
1271 swqe->tcp_end = (u16)skb->len - 1;
1272}
1273
1274static inline void write_udp_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 udphdr, check));
1279
1280 swqe->tcp_end = (u16)skb->len - 1;
1281}
1282
1283
1284static void write_swqe2_TSO(struct sk_buff *skb,
1285 struct ehea_swqe *swqe, u32 lkey)
1286{
1287 struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry;
1288 u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0];
1289 int skb_data_size = skb->len - skb->data_len;
1290 int headersize;
1291 u64 tmp_addr;
1292
1293 /* Packet is TCP with TSO enabled */
1294 swqe->tx_control |= EHEA_SWQE_TSO;
1295 swqe->mss = skb_shinfo(skb)->gso_size;
1296 /* copy only eth/ip/tcp headers to immediate data and
1297 * the rest of skb->data to sg1entry
1298 */
1299 headersize = ETH_HLEN + (skb->nh.iph->ihl * 4) + (skb->h.th->doff * 4);
1300
1301 skb_data_size = skb->len - skb->data_len;
1302
1303 if (skb_data_size >= headersize) {
1304 /* copy immediate data */
1305 memcpy(imm_data, skb->data, headersize);
1306 swqe->immediate_data_length = headersize;
1307
1308 if (skb_data_size > headersize) {
1309 /* set sg1entry data */
1310 sg1entry->l_key = lkey;
1311 sg1entry->len = skb_data_size - headersize;
1312
1313 tmp_addr = (u64)(skb->data + headersize);
1314 sg1entry->vaddr = tmp_addr;
1315 swqe->descriptors++;
1316 }
1317 } else
1318 ehea_error("cannot handle fragmented headers");
1319}
1320
1321static void write_swqe2_nonTSO(struct sk_buff *skb,
1322 struct ehea_swqe *swqe, u32 lkey)
1323{
1324 int skb_data_size = skb->len - skb->data_len;
1325 u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0];
1326 struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry;
1327 u64 tmp_addr;
1328
1329 /* Packet is any nonTSO type
1330 *
1331 * Copy as much as possible skb->data to immediate data and
1332 * the rest to sg1entry
1333 */
1334 if (skb_data_size >= SWQE2_MAX_IMM) {
1335 /* copy immediate data */
1336 memcpy(imm_data, skb->data, SWQE2_MAX_IMM);
1337
1338 swqe->immediate_data_length = SWQE2_MAX_IMM;
1339
1340 if (skb_data_size > SWQE2_MAX_IMM) {
1341 /* copy sg1entry data */
1342 sg1entry->l_key = lkey;
1343 sg1entry->len = skb_data_size - SWQE2_MAX_IMM;
1344 tmp_addr = (u64)(skb->data + SWQE2_MAX_IMM);
1345 sg1entry->vaddr = tmp_addr;
1346 swqe->descriptors++;
1347 }
1348 } else {
1349 memcpy(imm_data, skb->data, skb_data_size);
1350 swqe->immediate_data_length = skb_data_size;
1351 }
1352}
1353
1354static inline void write_swqe2_data(struct sk_buff *skb, struct net_device *dev,
1355 struct ehea_swqe *swqe, u32 lkey)
1356{
1357 struct ehea_vsgentry *sg_list, *sg1entry, *sgentry;
1358 skb_frag_t *frag;
1359 int nfrags, sg1entry_contains_frag_data, i;
1360 u64 tmp_addr;
1361
1362 nfrags = skb_shinfo(skb)->nr_frags;
1363 sg1entry = &swqe->u.immdata_desc.sg_entry;
1364 sg_list = (struct ehea_vsgentry*)&swqe->u.immdata_desc.sg_list;
1365 swqe->descriptors = 0;
1366 sg1entry_contains_frag_data = 0;
1367
1368 if ((dev->features & NETIF_F_TSO) && skb_shinfo(skb)->gso_size)
1369 write_swqe2_TSO(skb, swqe, lkey);
1370 else
1371 write_swqe2_nonTSO(skb, swqe, lkey);
1372
1373 /* write descriptors */
1374 if (nfrags > 0) {
1375 if (swqe->descriptors == 0) {
1376 /* sg1entry not yet used */
1377 frag = &skb_shinfo(skb)->frags[0];
1378
1379 /* copy sg1entry data */
1380 sg1entry->l_key = lkey;
1381 sg1entry->len = frag->size;
1382 tmp_addr = (u64)(page_address(frag->page)
1383 + frag->page_offset);
1384 sg1entry->vaddr = tmp_addr;
1385 swqe->descriptors++;
1386 sg1entry_contains_frag_data = 1;
1387 }
1388
1389 for (i = sg1entry_contains_frag_data; i < nfrags; i++) {
1390
1391 frag = &skb_shinfo(skb)->frags[i];
1392 sgentry = &sg_list[i - sg1entry_contains_frag_data];
1393
1394 sgentry->l_key = lkey;
1395 sgentry->len = frag->size;
1396
1397 tmp_addr = (u64)(page_address(frag->page)
1398 + frag->page_offset);
1399 sgentry->vaddr = tmp_addr;
1400 swqe->descriptors++;
1401 }
1402 }
1403}
1404
1405static int ehea_broadcast_reg_helper(struct ehea_port *port, u32 hcallid)
1406{
1407 int ret = 0;
1408 u64 hret;
1409 u8 reg_type;
1410
1411 /* De/Register untagged packets */
1412 reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_UNTAGGED;
1413 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1414 port->logical_port_id,
1415 reg_type, port->mac_addr, 0, hcallid);
1416 if (hret != H_SUCCESS) {
1417 ehea_error("reg_dereg_bcmc failed (tagged)");
1418 ret = -EIO;
1419 goto out_herr;
1420 }
1421
1422 /* De/Register VLAN packets */
1423 reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_VLANID_ALL;
1424 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1425 port->logical_port_id,
1426 reg_type, port->mac_addr, 0, hcallid);
1427 if (hret != H_SUCCESS) {
1428 ehea_error("reg_dereg_bcmc failed (vlan)");
1429 ret = -EIO;
1430 }
1431out_herr:
1432 return ret;
1433}
1434
1435static int ehea_set_mac_addr(struct net_device *dev, void *sa)
1436{
1437 struct ehea_port *port = netdev_priv(dev);
1438 struct sockaddr *mac_addr = sa;
1439 struct hcp_ehea_port_cb0 *cb0;
1440 int ret;
1441 u64 hret;
1442
1443 if (!is_valid_ether_addr(mac_addr->sa_data)) {
1444 ret = -EADDRNOTAVAIL;
1445 goto out;
1446 }
1447
a1d261c5 1448 cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL);
7a291083
JBT		 1449 if (!cb0) {
1450 ehea_error("no mem for cb0");
1451 ret = -ENOMEM;
1452 goto out;
1453 }
1454
1455 memcpy(&(cb0->port_mac_addr), &(mac_addr->sa_data[0]), ETH_ALEN);
1456
1457 cb0->port_mac_addr = cb0->port_mac_addr >> 16;
1458
1459 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1460 port->logical_port_id, H_PORT_CB0,
1461 EHEA_BMASK_SET(H_PORT_CB0_MAC, 1), cb0);
1462 if (hret != H_SUCCESS) {
1463 ret = -EIO;
1464 goto out_free;
1465 }
1466
1467 memcpy(dev->dev_addr, mac_addr->sa_data, dev->addr_len);
1468
1469 /* Deregister old MAC in pHYP */
1470 ret = ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
1471 if (ret)
1472 goto out_free;
1473
1474 port->mac_addr = cb0->port_mac_addr << 16;
1475
1476 /* Register new MAC in pHYP */
1477 ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
1478 if (ret)
1479 goto out_free;
1480
1481 ret = 0;
1482out_free:
1483 kfree(cb0);
1484out:
1485 return ret;
1486}
1487
1488static void ehea_promiscuous_error(u64 hret, int enable)
1489{
1490 ehea_info("Hypervisor denied %sabling promiscuous mode.%s",
1491 enable == 1 ? "en" : "dis",
1492 hret != H_AUTHORITY ? "" : " Another partition owning a "
1493 "logical port on the same physical port might have altered "
1494 "promiscuous mode first.");
1495}
1496
1497static void ehea_promiscuous(struct net_device *dev, int enable)
1498{
1499 struct ehea_port *port = netdev_priv(dev);
1500 struct hcp_ehea_port_cb7 *cb7;
1501 u64 hret;
1502
1503 if ((enable && port->promisc) || (!enable && !port->promisc))
1504 return;
1505
a1d261c5 1506 cb7 = kzalloc(PAGE_SIZE, GFP_ATOMIC);
7a291083
JBT		 1507 if (!cb7) {
1508 ehea_error("no mem for cb7");
1509 goto out;
1510 }
1511
1512 /* Modify Pxs_DUCQPN in CB7 */
1513 cb7->def_uc_qpn = enable == 1 ? port->port_res[0].qp->fw_handle : 0;
1514
1515 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1516 port->logical_port_id,
1517 H_PORT_CB7, H_PORT_CB7_DUCQPN, cb7);
1518 if (hret) {
1519 ehea_promiscuous_error(hret, enable);
1520 goto out;
1521 }
1522
1523 port->promisc = enable;
1524out:
1525 kfree(cb7);
1526 return;
1527}
1528
1529static u64 ehea_multicast_reg_helper(struct ehea_port *port, u64 mc_mac_addr,
1530 u32 hcallid)
1531{
1532 u64 hret;
1533 u8 reg_type;
1534
1535 reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST
1536 | EHEA_BCMC_UNTAGGED;
1537
1538 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1539 port->logical_port_id,
1540 reg_type, mc_mac_addr, 0, hcallid);
1541 if (hret)
1542 goto out;
1543
1544 reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST
1545 | EHEA_BCMC_VLANID_ALL;
1546
1547 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1548 port->logical_port_id,
1549 reg_type, mc_mac_addr, 0, hcallid);
1550out:
1551 return hret;
1552}
1553
1554static int ehea_drop_multicast_list(struct net_device *dev)
1555{
1556 struct ehea_port *port = netdev_priv(dev);
1557 struct ehea_mc_list *mc_entry = port->mc_list;
1558 struct list_head *pos;
1559 struct list_head *temp;
1560 int ret = 0;
1561 u64 hret;
1562
1563 list_for_each_safe(pos, temp, &(port->mc_list->list)) {
1564 mc_entry = list_entry(pos, struct ehea_mc_list, list);
1565
1566 hret = ehea_multicast_reg_helper(port, mc_entry->macaddr,
1567 H_DEREG_BCMC);
1568 if (hret) {
1569 ehea_error("failed deregistering mcast MAC");
1570 ret = -EIO;
1571 }
1572
1573 list_del(pos);
1574 kfree(mc_entry);
1575 }
1576 return ret;
1577}
1578
1579static void ehea_allmulti(struct net_device *dev, int enable)
1580{
1581 struct ehea_port *port = netdev_priv(dev);
1582 u64 hret;
1583
1584 if (!port->allmulti) {
1585 if (enable) {
1586 /* Enable ALLMULTI */
1587 ehea_drop_multicast_list(dev);
1588 hret = ehea_multicast_reg_helper(port, 0, H_REG_BCMC);
1589 if (!hret)
1590 port->allmulti = 1;
1591 else
1592 ehea_error("failed enabling IFF_ALLMULTI");
1593 }
1594 } else
1595 if (!enable) {
1596 /* Disable ALLMULTI */
1597 hret = ehea_multicast_reg_helper(port, 0, H_DEREG_BCMC);
1598 if (!hret)
1599 port->allmulti = 0;
1600 else
1601 ehea_error("failed disabling IFF_ALLMULTI");
1602 }
1603}
1604
1605static void ehea_add_multicast_entry(struct ehea_port* port, u8* mc_mac_addr)
1606{
1607 struct ehea_mc_list *ehea_mcl_entry;
1608 u64 hret;
1609
1e1675cc 1610 ehea_mcl_entry = kzalloc(sizeof(*ehea_mcl_entry), GFP_ATOMIC);
7a291083
JBT		 1611 if (!ehea_mcl_entry) {
1612 ehea_error("no mem for mcl_entry");
1613 return;
1614 }
1615
1616 INIT_LIST_HEAD(&ehea_mcl_entry->list);
1617
1618 memcpy(&ehea_mcl_entry->macaddr, mc_mac_addr, ETH_ALEN);
1619
1620 hret = ehea_multicast_reg_helper(port, ehea_mcl_entry->macaddr,
1621 H_REG_BCMC);
1622 if (!hret)
1623 list_add(&ehea_mcl_entry->list, &port->mc_list->list);
1624 else {
1625 ehea_error("failed registering mcast MAC");
1626 kfree(ehea_mcl_entry);
1627 }
1628}
1629
1630static void ehea_set_multicast_list(struct net_device *dev)
1631{
1632 struct ehea_port *port = netdev_priv(dev);
1633 struct dev_mc_list *k_mcl_entry;
1634 int ret, i;
1635
1636 if (dev->flags & IFF_PROMISC) {
1637 ehea_promiscuous(dev, 1);
1638 return;
1639 }
1640 ehea_promiscuous(dev, 0);
1641
1642 if (dev->flags & IFF_ALLMULTI) {
1643 ehea_allmulti(dev, 1);
1644 return;
1645 }
1646 ehea_allmulti(dev, 0);
1647
1648 if (dev->mc_count) {
1649 ret = ehea_drop_multicast_list(dev);
1650 if (ret) {
1651 /* Dropping the current multicast list failed.
1652 * Enabling ALL_MULTI is the best we can do.
1653 */
1654 ehea_allmulti(dev, 1);
1655 }
1656
1657 if (dev->mc_count > port->adapter->max_mc_mac) {
1658 ehea_info("Mcast registration limit reached (0x%lx). "
1659 "Use ALLMULTI!",
1660 port->adapter->max_mc_mac);
1661 goto out;
1662 }
1663
1664 for (i = 0, k_mcl_entry = dev->mc_list;
1665 i < dev->mc_count;
1666 i++, k_mcl_entry = k_mcl_entry->next) {
1667 ehea_add_multicast_entry(port, k_mcl_entry->dmi_addr);
1668 }
1669 }
1670out:
1671 return;
1672}
1673
1674static int ehea_change_mtu(struct net_device *dev, int new_mtu)
1675{
1676 if ((new_mtu < 68) || (new_mtu > EHEA_MAX_PACKET_SIZE))
1677 return -EINVAL;
1678 dev->mtu = new_mtu;
1679 return 0;
1680}
1681
1682static void ehea_xmit2(struct sk_buff *skb, struct net_device *dev,
1683 struct ehea_swqe *swqe, u32 lkey)
1684{
1685 if (skb->protocol == htons(ETH_P_IP)) {
1686 /* IPv4 */
1687 swqe->tx_control |= EHEA_SWQE_CRC
1688 | EHEA_SWQE_IP_CHECKSUM
1689 | EHEA_SWQE_TCP_CHECKSUM
1690 | EHEA_SWQE_IMM_DATA_PRESENT
1691 | EHEA_SWQE_DESCRIPTORS_PRESENT;
1692
1693 write_ip_start_end(swqe, skb);
1694
1695 if (skb->nh.iph->protocol == IPPROTO_UDP) {
1696 if ((skb->nh.iph->frag_off & IP_MF) ||
1697 (skb->nh.iph->frag_off & IP_OFFSET))
1698 /* IP fragment, so don't change cs */
1699 swqe->tx_control &= ~EHEA_SWQE_TCP_CHECKSUM;
1700 else
1701 write_udp_offset_end(swqe, skb);
1702
1703 } else if (skb->nh.iph->protocol == IPPROTO_TCP) {
1704 write_tcp_offset_end(swqe, skb);
1705 }
1706
1707 /* icmp (big data) and ip segmentation packets (all other ip
1708 packets) do not require any special handling */
1709
1710 } else {
1711 /* Other Ethernet Protocol */
1712 swqe->tx_control |= EHEA_SWQE_CRC
1713 | EHEA_SWQE_IMM_DATA_PRESENT
1714 | EHEA_SWQE_DESCRIPTORS_PRESENT;
1715 }
1716
1717 write_swqe2_data(skb, dev, swqe, lkey);
1718}
1719
1720static void ehea_xmit3(struct sk_buff *skb, struct net_device *dev,
1721 struct ehea_swqe *swqe)
1722{
1723 int nfrags = skb_shinfo(skb)->nr_frags;
1724 u8 *imm_data = &swqe->u.immdata_nodesc.immediate_data[0];
1725 skb_frag_t *frag;
1726 int i;
1727
1728 if (skb->protocol == htons(ETH_P_IP)) {
1729 /* IPv4 */
1730 write_ip_start_end(swqe, skb);
1731
1732 if (skb->nh.iph->protocol == IPPROTO_TCP) {
1733 swqe->tx_control |= EHEA_SWQE_CRC
1734 | EHEA_SWQE_IP_CHECKSUM
1735 | EHEA_SWQE_TCP_CHECKSUM
1736 | EHEA_SWQE_IMM_DATA_PRESENT;
1737
1738 write_tcp_offset_end(swqe, skb);
1739
1740 } else if (skb->nh.iph->protocol == IPPROTO_UDP) {
1741 if ((skb->nh.iph->frag_off & IP_MF) ||
1742 (skb->nh.iph->frag_off & IP_OFFSET))
1743 /* IP fragment, so don't change cs */
1744 swqe->tx_control |= EHEA_SWQE_CRC
1745 | EHEA_SWQE_IMM_DATA_PRESENT;
1746 else {
1747 swqe->tx_control |= EHEA_SWQE_CRC
1748 | EHEA_SWQE_IP_CHECKSUM
1749 | EHEA_SWQE_TCP_CHECKSUM
1750 | EHEA_SWQE_IMM_DATA_PRESENT;
1751
1752 write_udp_offset_end(swqe, skb);
1753 }
1754 } else {
1755 /* icmp (big data) and
1756 ip segmentation packets (all other ip packets) */
1757 swqe->tx_control |= EHEA_SWQE_CRC
1758 | EHEA_SWQE_IP_CHECKSUM
1759 | EHEA_SWQE_IMM_DATA_PRESENT;
1760 }
1761 } else {
1762 /* Other Ethernet Protocol */
1763 swqe->tx_control |= EHEA_SWQE_CRC | EHEA_SWQE_IMM_DATA_PRESENT;
1764 }
1765 /* copy (immediate) data */
1766 if (nfrags == 0) {
1767 /* data is in a single piece */
1768 memcpy(imm_data, skb->data, skb->len);
1769 } else {
1770 /* first copy data from the skb->data buffer ... */
1771 memcpy(imm_data, skb->data, skb->len - skb->data_len);
1772 imm_data += skb->len - skb->data_len;
1773
1774 /* ... then copy data from the fragments */
1775 for (i = 0; i < nfrags; i++) {
1776 frag = &skb_shinfo(skb)->frags[i];
1777 memcpy(imm_data,
1778 page_address(frag->page) + frag->page_offset,
1779 frag->size);
1780 imm_data += frag->size;
1781 }
1782 }
1783 swqe->immediate_data_length = skb->len;
1784 dev_kfree_skb(skb);
1785}
1786
1787static int ehea_start_xmit(struct sk_buff *skb, struct net_device *dev)
1788{
1789 struct ehea_port *port = netdev_priv(dev);
1790 struct ehea_swqe *swqe;
1791 unsigned long flags;
1792 u32 lkey;
1793 int swqe_index;
1794 struct ehea_port_res *pr = &port->port_res[0];
1795
1796 spin_lock(&pr->xmit_lock);
1797
1798 swqe = ehea_get_swqe(pr->qp, &swqe_index);
1799 memset(swqe, 0, SWQE_HEADER_SIZE);
1800 atomic_dec(&pr->swqe_avail);
1801
1802 if (skb->len <= SWQE3_MAX_IMM) {
1803 u32 sig_iv = port->sig_comp_iv;
1804 u32 swqe_num = pr->swqe_id_counter;
1805 ehea_xmit3(skb, dev, swqe);
1806 swqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE3_TYPE)
1807 | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, swqe_num);
1808 if (pr->swqe_ll_count >= (sig_iv - 1)) {
1809 swqe->wr_id |= EHEA_BMASK_SET(EHEA_WR_ID_REFILL,
1810 sig_iv);
1811 swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
1812 pr->swqe_ll_count = 0;
1813 } else
1814 pr->swqe_ll_count += 1;
1815 } else {
1816 swqe->wr_id =
1817 EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE2_TYPE)
1818 | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, pr->swqe_id_counter)
1819 | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, pr->sq_skba.index);
1820 pr->sq_skba.arr[pr->sq_skba.index] = skb;
1821
1822 pr->sq_skba.index++;
1823 pr->sq_skba.index &= (pr->sq_skba.len - 1);
1824
1825 lkey = pr->send_mr.lkey;
1826 ehea_xmit2(skb, dev, swqe, lkey);
1827
1828 if (pr->swqe_count >= (EHEA_SIG_IV_LONG - 1)) {
1829 swqe->wr_id |= EHEA_BMASK_SET(EHEA_WR_ID_REFILL,
1830 EHEA_SIG_IV_LONG);
1831 swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
1832 pr->swqe_count = 0;
1833 } else
1834 pr->swqe_count += 1;
1835 }
1836 pr->swqe_id_counter += 1;
1837
1838 if (port->vgrp && vlan_tx_tag_present(skb)) {
1839 swqe->tx_control |= EHEA_SWQE_VLAN_INSERT;
1840 swqe->vlan_tag = vlan_tx_tag_get(skb);
1841 }
1842
1843 if (netif_msg_tx_queued(port)) {
1844 ehea_info("post swqe on QP %d", pr->qp->init_attr.qp_nr);
bff0a55f 1845 ehea_dump(swqe, 512, "swqe");
7a291083
JBT		 1846 }
1847
1848 ehea_post_swqe(pr->qp, swqe);
1849 pr->tx_packets++;
1850
1851 if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) {
1852 spin_lock_irqsave(&pr->netif_queue, flags);
1853 if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) {
1854 netif_stop_queue(dev);
1855 pr->queue_stopped = 1;
1856 }
1857 spin_unlock_irqrestore(&pr->netif_queue, flags);
1858 }
1859 dev->trans_start = jiffies;
1860 spin_unlock(&pr->xmit_lock);
1861
1862 return NETDEV_TX_OK;
1863}
1864
1865static void ehea_vlan_rx_register(struct net_device *dev,
1866 struct vlan_group *grp)
1867{
1868 struct ehea_port *port = netdev_priv(dev);
1869 struct ehea_adapter *adapter = port->adapter;
1870 struct hcp_ehea_port_cb1 *cb1;
1871 u64 hret;
1872
1873 port->vgrp = grp;
1874
a1d261c5 1875 cb1 = kzalloc(PAGE_SIZE, GFP_KERNEL);
7a291083
JBT		 1876 if (!cb1) {
1877 ehea_error("no mem for cb1");
1878 goto out;
1879 }
1880
1881 if (grp)
1882 memset(cb1->vlan_filter, 0, sizeof(cb1->vlan_filter));
1883 else
1884 memset(cb1->vlan_filter, 0xFF, sizeof(cb1->vlan_filter));
1885
1886 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
1887 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
1888 if (hret != H_SUCCESS)
1889 ehea_error("modify_ehea_port failed");
1890
1891 kfree(cb1);
1892out:
1893 return;
1894}
1895
1896static void ehea_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
1897{
1898 struct ehea_port *port = netdev_priv(dev);
1899 struct ehea_adapter *adapter = port->adapter;
1900 struct hcp_ehea_port_cb1 *cb1;
1901 int index;
1902 u64 hret;
1903
a1d261c5 1904 cb1 = kzalloc(PAGE_SIZE, GFP_KERNEL);
7a291083
JBT		 1905 if (!cb1) {
1906 ehea_error("no mem for cb1");
1907 goto out;
1908 }
1909
1910 hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
1911 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
1912 if (hret != H_SUCCESS) {
1913 ehea_error("query_ehea_port failed");
1914 goto out;
1915 }
1916
1917 index = (vid / 64);
1918 cb1->vlan_filter[index] |= ((u64)(1 << (vid & 0x3F)));
1919
1920 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
1921 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
1922 if (hret != H_SUCCESS)
1923 ehea_error("modify_ehea_port failed");
1924out:
1925 kfree(cb1);
1926 return;
1927}
1928
1929static void ehea_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
1930{
1931 struct ehea_port *port = netdev_priv(dev);
1932 struct ehea_adapter *adapter = port->adapter;
1933 struct hcp_ehea_port_cb1 *cb1;
1934 int index;
1935 u64 hret;
1936
1937 if (port->vgrp)
1938 port->vgrp->vlan_devices[vid] = NULL;
1939
a1d261c5 1940 cb1 = kzalloc(PAGE_SIZE, GFP_KERNEL);
7a291083
JBT		 1941 if (!cb1) {
1942 ehea_error("no mem for cb1");
1943 goto out;
1944 }
1945
1946 hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
1947 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
1948 if (hret != H_SUCCESS) {
1949 ehea_error("query_ehea_port failed");
1950 goto out;
1951 }
1952
1953 index = (vid / 64);
1954 cb1->vlan_filter[index] &= ~((u64)(1 << (vid & 0x3F)));
1955
1956 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
1957 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
1958 if (hret != H_SUCCESS)
1959 ehea_error("modify_ehea_port failed");
1960out:
1961 kfree(cb1);
1962 return;
1963}
1964
1965int ehea_activate_qp(struct ehea_adapter *adapter, struct ehea_qp *qp)
1966{
1967 int ret = -EIO;
1968 u64 hret;
1969 u16 dummy16 = 0;
1970 u64 dummy64 = 0;
1971 struct hcp_modify_qp_cb0* cb0;
1972
a1d261c5 1973 cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL);
7a291083
JBT		 1974 if (!cb0) {
1975 ret = -ENOMEM;
1976 goto out;
1977 }
1978
1979 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
1980 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
1981 if (hret != H_SUCCESS) {
1982 ehea_error("query_ehea_qp failed (1)");
1983 goto out;
1984 }
1985
1986 cb0->qp_ctl_reg = H_QP_CR_STATE_INITIALIZED;
1987 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
1988 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
1989 &dummy64, &dummy64, &dummy16, &dummy16);
1990 if (hret != H_SUCCESS) {
1991 ehea_error("modify_ehea_qp failed (1)");
1992 goto out;
1993 }
1994
1995 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
1996 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
1997 if (hret != H_SUCCESS) {
1998 ehea_error("query_ehea_qp failed (2)");
1999 goto out;
2000 }
2001
2002 cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_INITIALIZED;
2003 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2004 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2005 &dummy64, &dummy64, &dummy16, &dummy16);
2006 if (hret != H_SUCCESS) {
2007 ehea_error("modify_ehea_qp failed (2)");
2008 goto out;
2009 }
2010
2011 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2012 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2013 if (hret != H_SUCCESS) {
2014 ehea_error("query_ehea_qp failed (3)");
2015 goto out;
2016 }
2017
2018 cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_RDY2SND;
2019 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2020 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2021 &dummy64, &dummy64, &dummy16, &dummy16);
2022 if (hret != H_SUCCESS) {
2023 ehea_error("modify_ehea_qp failed (3)");
2024 goto out;
2025 }
2026
2027 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2028 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2029 if (hret != H_SUCCESS) {
2030 ehea_error("query_ehea_qp failed (4)");
2031 goto out;
2032 }
2033
2034 ret = 0;
2035out:
2036 kfree(cb0);
2037 return ret;
2038}
2039
2040static int ehea_port_res_setup(struct ehea_port *port, int def_qps,
2041 int add_tx_qps)
2042{
2043 int ret, i;
2044 struct port_res_cfg pr_cfg, pr_cfg_small_rx;
2045 enum ehea_eq_type eq_type = EHEA_EQ;
2046
2047 port->qp_eq = ehea_create_eq(port->adapter, eq_type,
2048 EHEA_MAX_ENTRIES_EQ, 1);
2049 if (!port->qp_eq) {
2050 ret = -EINVAL;
2051 ehea_error("ehea_create_eq failed (qp_eq)");
2052 goto out_kill_eq;
2053 }
2054
2055 pr_cfg.max_entries_rcq = rq1_entries + rq2_entries + rq3_entries;
2056 pr_cfg.max_entries_scq = sq_entries;
2057 pr_cfg.max_entries_sq = sq_entries;
2058 pr_cfg.max_entries_rq1 = rq1_entries;
2059 pr_cfg.max_entries_rq2 = rq2_entries;
2060 pr_cfg.max_entries_rq3 = rq3_entries;
2061
2062 pr_cfg_small_rx.max_entries_rcq = 1;
2063 pr_cfg_small_rx.max_entries_scq = sq_entries;
2064 pr_cfg_small_rx.max_entries_sq = sq_entries;
2065 pr_cfg_small_rx.max_entries_rq1 = 1;
2066 pr_cfg_small_rx.max_entries_rq2 = 1;
2067 pr_cfg_small_rx.max_entries_rq3 = 1;
2068
2069 for (i = 0; i < def_qps; i++) {
2070 ret = ehea_init_port_res(port, &port->port_res[i], &pr_cfg, i);
2071 if (ret)
2072 goto out_clean_pr;
2073 }
2074 for (i = def_qps; i < def_qps + add_tx_qps; i++) {
2075 ret = ehea_init_port_res(port, &port->port_res[i],
2076 &pr_cfg_small_rx, i);
2077 if (ret)
2078 goto out_clean_pr;
2079 }
2080
2081 return 0;
2082
2083out_clean_pr:
2084 while (--i >= 0)
2085 ehea_clean_portres(port, &port->port_res[i]);
2086
2087out_kill_eq:
2088 ehea_destroy_eq(port->qp_eq);
2089 return ret;
2090}
2091
2092static int ehea_clean_all_portres(struct ehea_port *port)
2093{
2094 int ret = 0;
2095 int i;
2096
2097 for(i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
2098 ret |= ehea_clean_portres(port, &port->port_res[i]);
2099
2100 ret |= ehea_destroy_eq(port->qp_eq);
2101
2102 return ret;
2103}
2104
2105static int ehea_up(struct net_device *dev)
2106{
2107 int ret, i;
2108 struct ehea_port *port = netdev_priv(dev);
2109 u64 mac_addr = 0;
2110
2111 if (port->state == EHEA_PORT_UP)
2112 return 0;
2113
2114 ret = ehea_port_res_setup(port, port->num_def_qps,
2115 port->num_add_tx_qps);
2116 if (ret) {
2117 ehea_error("port_res_failed");
2118 goto out;
2119 }
2120
2121 /* Set default QP for this port */
2122 ret = ehea_configure_port(port);
2123 if (ret) {
2124 ehea_error("ehea_configure_port failed. ret:%d", ret);
2125 goto out_clean_pr;
2126 }
2127
2128 ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
2129 if (ret) {
2130 ret = -EIO;
2131 ehea_error("out_clean_pr");
2132 goto out_clean_pr;
2133 }
2134 mac_addr = (*(u64*)dev->dev_addr) >> 16;
2135
2136 ret = ehea_reg_interrupts(dev);
2137 if (ret) {
2138 ehea_error("out_dereg_bc");
2139 goto out_dereg_bc;
2140 }
2141
2142 for(i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
2143 ret = ehea_activate_qp(port->adapter, port->port_res[i].qp);
2144 if (ret) {
2145 ehea_error("activate_qp failed");
2146 goto out_free_irqs;
2147 }
2148 }
2149
2150 for(i = 0; i < port->num_def_qps; i++) {
2151 ret = ehea_fill_port_res(&port->port_res[i]);
2152 if (ret) {
2153 ehea_error("out_free_irqs");
2154 goto out_free_irqs;
2155 }
2156 }
2157
2158 ret = 0;
2159 port->state = EHEA_PORT_UP;
2160 goto out;
2161
2162out_free_irqs:
2163 ehea_free_interrupts(dev);
2164
2165out_dereg_bc:
2166 ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
2167
2168out_clean_pr:
2169 ehea_clean_all_portres(port);
2170out:
2171 return ret;
2172}
2173
2174static int ehea_open(struct net_device *dev)
2175{
2176 int ret;
2177 struct ehea_port *port = netdev_priv(dev);
2178
2179 down(&port->port_lock);
2180
2181 if (netif_msg_ifup(port))
2182 ehea_info("enabling port %s", dev->name);
2183
2184 ret = ehea_up(dev);
2185 if (!ret)
2186 netif_start_queue(dev);
2187
2188 up(&port->port_lock);
2189
2190 return ret;
2191}
2192
2193static int ehea_down(struct net_device *dev)
2194{
2195 int ret, i;
2196 struct ehea_port *port = netdev_priv(dev);
2197
2198 if (port->state == EHEA_PORT_DOWN)
2199 return 0;
2200
2201 ehea_drop_multicast_list(dev);
2202 ehea_free_interrupts(dev);
2203
2204 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
2205 tasklet_kill(&port->port_res[i].send_comp_task);
2206
2207 ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
2208 ret = ehea_clean_all_portres(port);
2209 port->state = EHEA_PORT_DOWN;
2210 return ret;
2211}
2212
2213static int ehea_stop(struct net_device *dev)
2214{
2215 int ret;
2216 struct ehea_port *port = netdev_priv(dev);
2217
2218 if (netif_msg_ifdown(port))
2219 ehea_info("disabling port %s", dev->name);
2220
2221 flush_workqueue(port->adapter->ehea_wq);
2222 down(&port->port_lock);
2223 netif_stop_queue(dev);
2224 ret = ehea_down(dev);
2225 up(&port->port_lock);
2226 return ret;
2227}
2228
c4028958 2229static void ehea_reset_port(struct work_struct *work)
7a291083
JBT		 2230{
2231 int ret;
c4028958
DH		 2232 struct ehea_port *port =
2233 container_of(work, struct ehea_port, reset_task);
2234 struct net_device *dev = port->netdev;
7a291083
JBT		 2235
2236 port->resets++;
2237 down(&port->port_lock);
2238 netif_stop_queue(dev);
2239 netif_poll_disable(dev);
2240
2241 ret = ehea_down(dev);
2242 if (ret)
2243 ehea_error("ehea_down failed. not all resources are freed");
2244
2245 ret = ehea_up(dev);
2246 if (ret) {
2247 ehea_error("Reset device %s failed: ret=%d", dev->name, ret);
2248 goto out;
2249 }
2250
2251 if (netif_msg_timer(port))
2252 ehea_info("Device %s resetted successfully", dev->name);
2253
2254 netif_poll_enable(dev);
2255 netif_wake_queue(dev);
2256out:
2257 up(&port->port_lock);
2258 return;
2259}
2260
2261static void ehea_tx_watchdog(struct net_device *dev)
2262{
2263 struct ehea_port *port = netdev_priv(dev);
2264
2265 if (netif_carrier_ok(dev))
2266 queue_work(port->adapter->ehea_wq, &port->reset_task);
2267}
2268
2269int ehea_sense_adapter_attr(struct ehea_adapter *adapter)
2270{
2271 struct hcp_query_ehea *cb;
2272 u64 hret;
2273 int ret;
2274
a1d261c5 2275 cb = kzalloc(PAGE_SIZE, GFP_KERNEL);
7a291083
JBT		 2276 if (!cb) {
2277 ret = -ENOMEM;
2278 goto out;
2279 }
2280
2281 hret = ehea_h_query_ehea(adapter->handle, cb);
2282
2283 if (hret != H_SUCCESS) {
2284 ret = -EIO;
2285 goto out_herr;
2286 }
2287
2288 adapter->num_ports = cb->num_ports;
2289 adapter->max_mc_mac = cb->max_mc_mac - 1;
2290 ret = 0;
2291
2292out_herr:
2293 kfree(cb);
2294out:
2295 return ret;
2296}
2297
2298static int ehea_setup_single_port(struct ehea_port *port,
2299 struct device_node *dn)
2300{
2301 int ret;
2302 u64 hret;
2303 struct net_device *dev = port->netdev;
2304 struct ehea_adapter *adapter = port->adapter;
2305 struct hcp_ehea_port_cb4 *cb4;
2306 u32 *dn_log_port_id;
2307
2308 sema_init(&port->port_lock, 1);
2309 port->state = EHEA_PORT_DOWN;
2310 port->sig_comp_iv = sq_entries / 10;
2311
2312 if (!dn) {
2313 ehea_error("bad device node: dn=%p", dn);
2314 ret = -EINVAL;
2315 goto out;
2316 }
2317
2318 port->of_dev_node = dn;
2319
2320 /* Determine logical port id */
2321 dn_log_port_id = (u32*)get_property(dn, "ibm,hea-port-no", NULL);
2322
2323 if (!dn_log_port_id) {
2324 ehea_error("bad device node: dn_log_port_id=%p",
2325 dn_log_port_id);
2326 ret = -EINVAL;
2327 goto out;
2328 }
2329 port->logical_port_id = *dn_log_port_id;
2330
2331 port->mc_list = kzalloc(sizeof(struct ehea_mc_list), GFP_KERNEL);
2332 if (!port->mc_list) {
2333 ret = -ENOMEM;
2334 goto out;
2335 }
2336
2337 INIT_LIST_HEAD(&port->mc_list->list);
2338
7a291083
JBT		 2339 ret = ehea_sense_port_attr(port);
2340 if (ret)
2341 goto out;
2342
2343 /* Enable Jumbo frames */
a1d261c5 2344 cb4 = kzalloc(PAGE_SIZE, GFP_KERNEL);
7a291083
JBT		 2345 if (!cb4) {
2346 ehea_error("no mem for cb4");
2347 } else {
2348 cb4->jumbo_frame = 1;
2349 hret = ehea_h_modify_ehea_port(adapter->handle,
2350 port->logical_port_id,
2351 H_PORT_CB4, H_PORT_CB4_JUMBO,
2352 cb4);
2353 if (hret != H_SUCCESS) {
2354 ehea_info("Jumbo frames not activated");
2355 }
2356 kfree(cb4);
2357 }
2358
2359 /* initialize net_device structure */
2360 SET_MODULE_OWNER(dev);
2361
2362 memcpy(dev->dev_addr, &port->mac_addr, ETH_ALEN);
2363
2364 dev->open = ehea_open;
2365 dev->poll = ehea_poll;
2366 dev->weight = 64;
2367 dev->stop = ehea_stop;
2368 dev->hard_start_xmit = ehea_start_xmit;
2369 dev->get_stats = ehea_get_stats;
2370 dev->set_multicast_list = ehea_set_multicast_list;
2371 dev->set_mac_address = ehea_set_mac_addr;
2372 dev->change_mtu = ehea_change_mtu;
2373 dev->vlan_rx_register = ehea_vlan_rx_register;
2374 dev->vlan_rx_add_vid = ehea_vlan_rx_add_vid;
2375 dev->vlan_rx_kill_vid = ehea_vlan_rx_kill_vid;
2376 dev->features = NETIF_F_SG | NETIF_F_FRAGLIST | NETIF_F_TSO
2377 | NETIF_F_HIGHDMA | NETIF_F_HW_CSUM | NETIF_F_HW_VLAN_TX
2378 | NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_FILTER
2379 | NETIF_F_LLTX;
2380 dev->tx_timeout = &ehea_tx_watchdog;
2381 dev->watchdog_timeo = EHEA_WATCH_DOG_TIMEOUT;
2382
c4028958 2383 INIT_WORK(&port->reset_task, ehea_reset_port);
7a291083
JBT		 2384
2385 ehea_set_ethtool_ops(dev);
2386
2387 ret = register_netdev(dev);
2388 if (ret) {
2389 ehea_error("register_netdev failed. ret=%d", ret);
2390 goto out_free;
2391 }
2392
2393 port->netdev = dev;
2394 ret = 0;
2395 goto out;
2396
2397out_free:
2398 kfree(port->mc_list);
2399out:
2400 return ret;
2401}
2402
2403static int ehea_setup_ports(struct ehea_adapter *adapter)
2404{
2405 int ret;
2406 int port_setup_ok = 0;
2407 struct ehea_port *port;
2408 struct device_node *dn = NULL;
2409 struct net_device *dev;
2410 int i;
2411
2412 /* get port properties for all ports */
2413 for (i = 0; i < adapter->num_ports; i++) {
2414
2415 if (adapter->port[i])
2416 continue; /* port already up and running */
2417
2418 /* allocate memory for the port structures */
2419 dev = alloc_etherdev(sizeof(struct ehea_port));
2420
2421 if (!dev) {
2422 ehea_error("no mem for net_device");
2423 break;
2424 }
2425
2426 port = netdev_priv(dev);
2427 port->adapter = adapter;
2428 port->netdev = dev;
2429 adapter->port[i] = port;
2430 port->msg_enable = netif_msg_init(msg_level, EHEA_MSG_DEFAULT);
2431
2432 dn = of_find_node_by_name(dn, "ethernet");
2433 ret = ehea_setup_single_port(port, dn);
2434 if (ret) {
2435 /* Free mem for this port struct. The others will be
2436 processed on rollback */
2437 free_netdev(dev);
2438 adapter->port[i] = NULL;
2439 ehea_error("eHEA port %d setup failed, ret=%d", i, ret);
2440 }
2441 }
2442
2443 of_node_put(dn);
2444
2445 /* Check for succesfully set up ports */
2446 for (i = 0; i < adapter->num_ports; i++)
2447 if (adapter->port[i])
2448 port_setup_ok++;
2449
2450 if (port_setup_ok)
2451 ret = 0; /* At least some ports are setup correctly */
2452 else
2453 ret = -EINVAL;
2454
2455 return ret;
2456}
2457
2458static int __devinit ehea_probe(struct ibmebus_dev *dev,
2459 const struct of_device_id *id)
2460{
2461 struct ehea_adapter *adapter;
2462 u64 *adapter_handle;
2463 int ret;
2464
2465 adapter = kzalloc(sizeof(*adapter), GFP_KERNEL);
2466 if (!adapter) {
2467 ret = -ENOMEM;
2468 dev_err(&dev->ofdev.dev, "no mem for ehea_adapter\n");
2469 goto out;
2470 }
2471
2472 adapter_handle = (u64*)get_property(dev->ofdev.node, "ibm,hea-handle",
2473 NULL);
061bf3cd
TK		 2474 if (adapter_handle)
2475 adapter->handle = *adapter_handle;
2476
2477 if (!adapter->handle) {
7a291083
JBT		 2478 dev_err(&dev->ofdev.dev, "failed getting handle for adapter"
2479 " '%s'\n", dev->ofdev.node->full_name);
2480 ret = -ENODEV;
2481 goto out_free_ad;
2482 }
2483
7a291083
JBT		 2484 adapter->pd = EHEA_PD_ID;
2485
2486 dev->ofdev.dev.driver_data = adapter;
2487
2488 ret = ehea_reg_mr_adapter(adapter);
2489 if (ret) {
2490 dev_err(&dev->ofdev.dev, "reg_mr_adapter failed\n");
2491 goto out_free_ad;
2492 }
2493
2494 /* initialize adapter and ports */
2495 /* get adapter properties */
2496 ret = ehea_sense_adapter_attr(adapter);
2497 if (ret) {
2498 dev_err(&dev->ofdev.dev, "sense_adapter_attr failed: %d", ret);
2499 goto out_free_res;
2500 }
2501 dev_info(&dev->ofdev.dev, "%d eHEA ports found\n", adapter->num_ports);
2502
2503 adapter->neq = ehea_create_eq(adapter,
2504 EHEA_NEQ, EHEA_MAX_ENTRIES_EQ, 1);
2505 if (!adapter->neq) {
2506 dev_err(&dev->ofdev.dev, "NEQ creation failed");
2507 goto out_free_res;
2508 }
2509
2510 tasklet_init(&adapter->neq_tasklet, ehea_neq_tasklet,
2511 (unsigned long)adapter);
2512
2513 ret = ibmebus_request_irq(NULL, adapter->neq->attr.ist1,
2514 ehea_interrupt_neq, SA_INTERRUPT,
2515 "ehea_neq", adapter);
2516 if (ret) {
2517 dev_err(&dev->ofdev.dev, "requesting NEQ IRQ failed");
2518 goto out_kill_eq;
2519 }
2520
2521 adapter->ehea_wq = create_workqueue("ehea_wq");
2522 if (!adapter->ehea_wq)
2523 goto out_free_irq;
2524
2525 ret = ehea_setup_ports(adapter);
2526 if (ret) {
2527 dev_err(&dev->ofdev.dev, "setup_ports failed");
2528 goto out_kill_wq;
2529 }
2530
2531 ret = 0;
2532 goto out;
2533
2534out_kill_wq:
2535 destroy_workqueue(adapter->ehea_wq);
2536
2537out_free_irq:
2538 ibmebus_free_irq(NULL, adapter->neq->attr.ist1, adapter);
2539
2540out_kill_eq:
2541 ehea_destroy_eq(adapter->neq);
2542
2543out_free_res:
2544 ehea_h_free_resource(adapter->handle, adapter->mr.handle);
2545
2546out_free_ad:
2547 kfree(adapter);
2548out:
2549 return ret;
2550}
2551
2552static void ehea_shutdown_single_port(struct ehea_port *port)
2553{
2554 unregister_netdev(port->netdev);
2555 kfree(port->mc_list);
2556 free_netdev(port->netdev);
2557}
2558
2559static int __devexit ehea_remove(struct ibmebus_dev *dev)
2560{
2561 struct ehea_adapter *adapter = dev->ofdev.dev.driver_data;
2562 u64 hret;
2563 int i;
2564
2565 for (i = 0; i < adapter->num_ports; i++)
2566 if (adapter->port[i]) {
2567 ehea_shutdown_single_port(adapter->port[i]);
2568 adapter->port[i] = NULL;
2569 }
2570 destroy_workqueue(adapter->ehea_wq);
2571
2572 ibmebus_free_irq(NULL, adapter->neq->attr.ist1, adapter);
2573
2574 ehea_destroy_eq(adapter->neq);
2575
2576 hret = ehea_h_free_resource(adapter->handle, adapter->mr.handle);
2577 if (hret) {
2578 dev_err(&dev->ofdev.dev, "free_resource_mr failed");
2579 return -EIO;
2580 }
2581 kfree(adapter);
2582 return 0;
2583}
2584
2585static int check_module_parm(void)
2586{
2587 int ret = 0;
2588
2589 if ((rq1_entries < EHEA_MIN_ENTRIES_QP) ||
2590 (rq1_entries > EHEA_MAX_ENTRIES_RQ1)) {
2591 ehea_info("Bad parameter: rq1_entries");
2592 ret = -EINVAL;
2593 }
2594 if ((rq2_entries < EHEA_MIN_ENTRIES_QP) ||
2595 (rq2_entries > EHEA_MAX_ENTRIES_RQ2)) {
2596 ehea_info("Bad parameter: rq2_entries");
2597 ret = -EINVAL;
2598 }
2599 if ((rq3_entries < EHEA_MIN_ENTRIES_QP) ||
2600 (rq3_entries > EHEA_MAX_ENTRIES_RQ3)) {
2601 ehea_info("Bad parameter: rq3_entries");
2602 ret = -EINVAL;
2603 }
2604 if ((sq_entries < EHEA_MIN_ENTRIES_QP) ||
2605 (sq_entries > EHEA_MAX_ENTRIES_SQ)) {
2606 ehea_info("Bad parameter: sq_entries");
2607 ret = -EINVAL;
2608 }
2609
2610 return ret;
2611}
2612
2613static struct of_device_id ehea_device_table[] = {
2614 {
2615 .name = "lhea",
2616 .compatible = "IBM,lhea",
2617 },
2618 {},
2619};
2620
2621static struct ibmebus_driver ehea_driver = {
2622 .name = "ehea",
2623 .id_table = ehea_device_table,
2624 .probe = ehea_probe,
2625 .remove = ehea_remove,
2626};
2627
2628int __init ehea_module_init(void)
2629{
2630 int ret;
2631
2632 printk(KERN_INFO "IBM eHEA ethernet device driver (Release %s)\n",
2633 DRV_VERSION);
2634
2635 ret = check_module_parm();
2636 if (ret)
2637 goto out;
2638 ret = ibmebus_register_driver(&ehea_driver);
2639 if (ret)
2640 ehea_error("failed registering eHEA device driver on ebus");
2641
2642out:
2643 return ret;
2644}
2645
2646static void __exit ehea_module_exit(void)
2647{
2648 ibmebus_unregister_driver(&ehea_driver);
2649}
2650
2651module_init(ehea_module_init);
2652module_exit(ehea_module_exit);
Linux kernel - Deliverables
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