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[PATCH] ehea: firmware (hvcall) interface changes
[net-next-2.6.git] / drivers / net / ehea / ehea_main.c
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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
95 cb2 = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL);
96 if (!cb2) {
97 ehea_error("no mem for cb2");
98 goto out;
99 }
100
101 hret = ehea_h_query_ehea_port(port->adapter->handle,
102 port->logical_port_id,
103 H_PORT_CB2, H_PORT_CB2_ALL, cb2);
104 if (hret != H_SUCCESS) {
105 ehea_error("query_ehea_port failed");
106 goto out_herr;
107 }
108
109 if (netif_msg_hw(port))
110 ehea_dump(cb2, sizeof(*cb2), "net_device_stats");
111
112 rx_packets = 0;
113 for (i = 0; i < port->num_def_qps; i++)
114 rx_packets += port->port_res[i].rx_packets;
115
116 stats->tx_packets = cb2->txucp + cb2->txmcp + cb2->txbcp;
117 stats->multicast = cb2->rxmcp;
118 stats->rx_errors = cb2->rxuerr;
119 stats->rx_bytes = cb2->rxo;
120 stats->tx_bytes = cb2->txo;
121 stats->rx_packets = rx_packets;
122
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
589 cb0 = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL);
590 if (!cb0) {
591 ehea_error("no mem for cb0");
592 ret = -ENOMEM;
593 goto out;
594 }
595
596 hret = ehea_h_query_ehea_port(port->adapter->handle,
597 port->logical_port_id, H_PORT_CB0,
598 EHEA_BMASK_SET(H_PORT_CB0_ALL, 0xFFFF),
599 cb0);
600 if (hret != H_SUCCESS) {
601 ret = -EIO;
602 goto out_free;
603 }
604
605 /* MAC address */
606 port->mac_addr = cb0->port_mac_addr << 16;
607
608 if (!is_valid_ether_addr((u8*)&port->mac_addr)) {
609 ret = -EADDRNOTAVAIL;
610 goto out_free;
611 }
612
613 /* Port speed */
614 switch (cb0->port_speed) {
615 case H_SPEED_10M_H:
616 port->port_speed = EHEA_SPEED_10M;
617 port->full_duplex = 0;
618 break;
619 case H_SPEED_10M_F:
620 port->port_speed = EHEA_SPEED_10M;
621 port->full_duplex = 1;
622 break;
623 case H_SPEED_100M_H:
624 port->port_speed = EHEA_SPEED_100M;
625 port->full_duplex = 0;
626 break;
627 case H_SPEED_100M_F:
628 port->port_speed = EHEA_SPEED_100M;
629 port->full_duplex = 1;
630 break;
631 case H_SPEED_1G_F:
632 port->port_speed = EHEA_SPEED_1G;
633 port->full_duplex = 1;
634 break;
635 case H_SPEED_10G_F:
636 port->port_speed = EHEA_SPEED_10G;
637 port->full_duplex = 1;
638 break;
639 default:
640 port->port_speed = 0;
641 port->full_duplex = 0;
642 break;
643 }
644
645 /* Number of default QPs */
646 port->num_def_qps = cb0->num_default_qps;
647
648 if (!port->num_def_qps) {
649 ret = -EINVAL;
650 goto out_free;
651 }
652
653 if (port->num_def_qps >= EHEA_NUM_TX_QP)
654 port->num_add_tx_qps = 0;
655 else
656 port->num_add_tx_qps = EHEA_NUM_TX_QP - port->num_def_qps;
657
658 ret = 0;
659out_free:
660 if (ret || netif_msg_probe(port))
661 ehea_dump(cb0, sizeof(*cb0), "ehea_sense_port_attr");
662 kfree(cb0);
663out:
664 return ret;
665}
666
667int ehea_set_portspeed(struct ehea_port *port, u32 port_speed)
668{
669 struct hcp_ehea_port_cb4 *cb4;
670 u64 hret;
671 int ret = 0;
672
673 cb4 = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL);
674 if (!cb4) {
675 ehea_error("no mem for cb4");
676 ret = -ENOMEM;
677 goto out;
678 }
679
680 cb4->port_speed = port_speed;
681
682 netif_carrier_off(port->netdev);
683
684 hret = ehea_h_modify_ehea_port(port->adapter->handle,
685 port->logical_port_id,
686 H_PORT_CB4, H_PORT_CB4_SPEED, cb4);
687 if (hret == H_SUCCESS) {
688 port->autoneg = port_speed == EHEA_SPEED_AUTONEG ? 1 : 0;
689
690 hret = ehea_h_query_ehea_port(port->adapter->handle,
691 port->logical_port_id,
692 H_PORT_CB4, H_PORT_CB4_SPEED,
693 cb4);
694 if (hret == H_SUCCESS) {
695 switch (cb4->port_speed) {
696 case H_SPEED_10M_H:
697 port->port_speed = EHEA_SPEED_10M;
698 port->full_duplex = 0;
699 break;
700 case H_SPEED_10M_F:
701 port->port_speed = EHEA_SPEED_10M;
702 port->full_duplex = 1;
703 break;
704 case H_SPEED_100M_H:
705 port->port_speed = EHEA_SPEED_100M;
706 port->full_duplex = 0;
707 break;
708 case H_SPEED_100M_F:
709 port->port_speed = EHEA_SPEED_100M;
710 port->full_duplex = 1;
711 break;
712 case H_SPEED_1G_F:
713 port->port_speed = EHEA_SPEED_1G;
714 port->full_duplex = 1;
715 break;
716 case H_SPEED_10G_F:
717 port->port_speed = EHEA_SPEED_10G;
718 port->full_duplex = 1;
719 break;
720 default:
721 port->port_speed = 0;
722 port->full_duplex = 0;
723 break;
724 }
725 } else {
726 ehea_error("Failed sensing port speed");
727 ret = -EIO;
728 }
729 } else {
730 if (hret == H_AUTHORITY) {
731 ehea_info("Hypervisor denied setting port speed. Either"
732 " this partition is not authorized to set "
733 "port speed or another partition has modified"
734 " port speed first.");
735 ret = -EPERM;
736 } else {
737 ret = -EIO;
738 ehea_error("Failed setting port speed");
739 }
740 }
741 netif_carrier_on(port->netdev);
742 kfree(cb4);
743out:
744 return ret;
745}
746
747static void ehea_parse_eqe(struct ehea_adapter *adapter, u64 eqe)
748{
749 int ret;
750 u8 ec;
751 u8 portnum;
752 struct ehea_port *port;
753
754 ec = EHEA_BMASK_GET(NEQE_EVENT_CODE, eqe);
755 portnum = EHEA_BMASK_GET(NEQE_PORTNUM, eqe);
756 port = ehea_get_port(adapter, portnum);
757
758 switch (ec) {
759 case EHEA_EC_PORTSTATE_CHG: /* port state change */
760
761 if (!port) {
762 ehea_error("unknown portnum %x", portnum);
763 break;
764 }
765
766 if (EHEA_BMASK_GET(NEQE_PORT_UP, eqe)) {
767 if (!netif_carrier_ok(port->netdev)) {
768 ret = ehea_sense_port_attr(
769 adapter->port[portnum]);
770 if (ret) {
771 ehea_error("failed resensing port "
772 "attributes");
773 break;
774 }
775
776 if (netif_msg_link(port))
777 ehea_info("%s: Logical port up: %dMbps "
778 "%s Duplex",
779 port->netdev->name,
780 port->port_speed,
781 port->full_duplex ==
782 1 ? "Full" : "Half");
783
784 netif_carrier_on(port->netdev);
785 netif_wake_queue(port->netdev);
786 }
787 } else
788 if (netif_carrier_ok(port->netdev)) {
789 if (netif_msg_link(port))
790 ehea_info("%s: Logical port down",
791 port->netdev->name);
792 netif_carrier_off(port->netdev);
793 netif_stop_queue(port->netdev);
794 }
795
796 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PORT_UP, eqe)) {
797 if (netif_msg_link(port))
798 ehea_info("%s: Physical port up",
799 port->netdev->name);
800 } else {
801 if (netif_msg_link(port))
802 ehea_info("%s: Physical port down",
803 port->netdev->name);
804 }
805
806 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PRIMARY, eqe))
807 ehea_info("External switch port is primary port");
808 else
809 ehea_info("External switch port is backup port");
810
811 break;
812 case EHEA_EC_ADAPTER_MALFUNC:
813 ehea_error("Adapter malfunction");
814 break;
815 case EHEA_EC_PORT_MALFUNC:
816 ehea_info("Port malfunction: Device: %s", port->netdev->name);
817 netif_carrier_off(port->netdev);
818 netif_stop_queue(port->netdev);
819 break;
820 default:
821 ehea_error("unknown event code %x", ec);
822 break;
823 }
824}
825
826static void ehea_neq_tasklet(unsigned long data)
827{
828 struct ehea_adapter *adapter = (struct ehea_adapter*)data;
829 struct ehea_eqe *eqe;
830 u64 event_mask;
831
832 eqe = ehea_poll_eq(adapter->neq);
833 ehea_debug("eqe=%p", eqe);
834
835 while (eqe) {
836 ehea_debug("*eqe=%lx", eqe->entry);
837 ehea_parse_eqe(adapter, eqe->entry);
838 eqe = ehea_poll_eq(adapter->neq);
839 ehea_debug("next eqe=%p", eqe);
840 }
841
842 event_mask = EHEA_BMASK_SET(NELR_PORTSTATE_CHG, 1)
843 | EHEA_BMASK_SET(NELR_ADAPTER_MALFUNC, 1)
844 | EHEA_BMASK_SET(NELR_PORT_MALFUNC, 1);
845
846 ehea_h_reset_events(adapter->handle,
847 adapter->neq->fw_handle, event_mask);
848}
849
7d12e780 850static irqreturn_t ehea_interrupt_neq(int irq, void *param)
7a291083
JBT		 851{
852 struct ehea_adapter *adapter = param;
853 tasklet_hi_schedule(&adapter->neq_tasklet);
854 return IRQ_HANDLED;
855}
856
857
858static int ehea_fill_port_res(struct ehea_port_res *pr)
859{
860 int ret;
861 struct ehea_qp_init_attr *init_attr = &pr->qp->init_attr;
862
863 ret = ehea_init_fill_rq1(pr, init_attr->act_nr_rwqes_rq1
864 - init_attr->act_nr_rwqes_rq2
865 - init_attr->act_nr_rwqes_rq3 - 1);
866
867 ret |= ehea_refill_rq2(pr, init_attr->act_nr_rwqes_rq2 - 1);
868
869 ret |= ehea_refill_rq3(pr, init_attr->act_nr_rwqes_rq3 - 1);
870
871 return ret;
872}
873
874static int ehea_reg_interrupts(struct net_device *dev)
875{
876 struct ehea_port *port = netdev_priv(dev);
877 struct ehea_port_res *pr;
878 int i, ret;
879
880 for (i = 0; i < port->num_def_qps; i++) {
881 pr = &port->port_res[i];
882 snprintf(pr->int_recv_name, EHEA_IRQ_NAME_SIZE - 1
883 , "%s-recv%d", dev->name, i);
884 ret = ibmebus_request_irq(NULL, pr->recv_eq->attr.ist1,
885 ehea_recv_irq_handler,
886 SA_INTERRUPT, pr->int_recv_name, pr);
887 if (ret) {
888 ehea_error("failed registering irq for ehea_recv_int:"
889 "port_res_nr:%d, ist=%X", i,
890 pr->recv_eq->attr.ist1);
891 goto out_free_seq;
892 }
893 if (netif_msg_ifup(port))
894 ehea_info("irq_handle 0x%X for funct ehea_recv_int %d "
895 "registered", pr->recv_eq->attr.ist1, i);
896 }
897
898 snprintf(port->int_aff_name, EHEA_IRQ_NAME_SIZE - 1, "%s-aff",
899 dev->name);
900
901 ret = ibmebus_request_irq(NULL, port->qp_eq->attr.ist1,
902 ehea_qp_aff_irq_handler,
903 SA_INTERRUPT, port->int_aff_name, port);
904 if (ret) {
905 ehea_error("failed registering irq for qp_aff_irq_handler:"
906 "ist=%X", port->qp_eq->attr.ist1);
907 goto out_free_qpeq;
908 }
909
910 if (netif_msg_ifup(port))
911 ehea_info("irq_handle 0x%X for function qp_aff_irq_handler "
912 "registered", port->qp_eq->attr.ist1);
913
914 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
915 pr = &port->port_res[i];
916 snprintf(pr->int_send_name, EHEA_IRQ_NAME_SIZE - 1,
917 "%s-send%d", dev->name, i);
918 ret = ibmebus_request_irq(NULL, pr->send_eq->attr.ist1,
919 ehea_send_irq_handler,
920 SA_INTERRUPT, pr->int_send_name,
921 pr);
922 if (ret) {
923 ehea_error("failed registering irq for ehea_send "
924 "port_res_nr:%d, ist=%X", i,
925 pr->send_eq->attr.ist1);
926 goto out_free_req;
927 }
928 if (netif_msg_ifup(port))
929 ehea_info("irq_handle 0x%X for function ehea_send_int "
930 "%d registered", pr->send_eq->attr.ist1, i);
931 }
932out:
933 return ret;
934
935out_free_req:
936 while (--i >= 0) {
937 u32 ist = port->port_res[i].send_eq->attr.ist1;
938 ibmebus_free_irq(NULL, ist, &port->port_res[i]);
939 }
940out_free_qpeq:
941 ibmebus_free_irq(NULL, port->qp_eq->attr.ist1, port);
942 i = port->num_def_qps;
943out_free_seq:
944 while (--i >= 0) {
945 u32 ist = port->port_res[i].recv_eq->attr.ist1;
946 ibmebus_free_irq(NULL, ist, &port->port_res[i]);
947 }
948 goto out;
949}
950
951static void ehea_free_interrupts(struct net_device *dev)
952{
953 struct ehea_port *port = netdev_priv(dev);
954 struct ehea_port_res *pr;
955 int i;
956
957 /* send */
958 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
959 pr = &port->port_res[i];
960 ibmebus_free_irq(NULL, pr->send_eq->attr.ist1, pr);
961 if (netif_msg_intr(port))
962 ehea_info("free send irq for res %d with handle 0x%X",
963 i, pr->send_eq->attr.ist1);
964 }
965
966 /* receive */
967 for (i = 0; i < port->num_def_qps; i++) {
968 pr = &port->port_res[i];
969 ibmebus_free_irq(NULL, pr->recv_eq->attr.ist1, pr);
970 if (netif_msg_intr(port))
971 ehea_info("free recv irq for res %d with handle 0x%X",
972 i, pr->recv_eq->attr.ist1);
973 }
974
975 /* associated events */
976 ibmebus_free_irq(NULL, port->qp_eq->attr.ist1, port);
977 if (netif_msg_intr(port))
978 ehea_info("associated event interrupt for handle 0x%X freed",
979 port->qp_eq->attr.ist1);
980}
981
982static int ehea_configure_port(struct ehea_port *port)
983{
984 int ret, i;
985 u64 hret, mask;
986 struct hcp_ehea_port_cb0 *cb0;
987
988 ret = -ENOMEM;
989 cb0 = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL);
990 if (!cb0)
991 goto out;
992
993 cb0->port_rc = EHEA_BMASK_SET(PXLY_RC_VALID, 1)
994 | EHEA_BMASK_SET(PXLY_RC_IP_CHKSUM, 1)
995 | EHEA_BMASK_SET(PXLY_RC_TCP_UDP_CHKSUM, 1)
996 | EHEA_BMASK_SET(PXLY_RC_VLAN_XTRACT, 1)
997 | EHEA_BMASK_SET(PXLY_RC_VLAN_TAG_FILTER,
998 PXLY_RC_VLAN_FILTER)
999 | EHEA_BMASK_SET(PXLY_RC_JUMBO_FRAME, 1);
1000
1001 for (i = 0; i < port->num_def_qps; i++)
1002 cb0->default_qpn_arr[i] = port->port_res[i].qp->init_attr.qp_nr;
1003
1004 if (netif_msg_ifup(port))
1005 ehea_dump(cb0, sizeof(*cb0), "ehea_configure_port");
1006
1007 mask = EHEA_BMASK_SET(H_PORT_CB0_PRC, 1)
1008 | EHEA_BMASK_SET(H_PORT_CB0_DEFQPNARRAY, 1);
1009
1010 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1011 port->logical_port_id,
1012 H_PORT_CB0, mask, cb0);
1013 ret = -EIO;
1014 if (hret != H_SUCCESS)
1015 goto out_free;
1016
1017 ret = 0;
1018
1019out_free:
1020 kfree(cb0);
1021out:
1022 return ret;
1023}
1024
1025static int ehea_gen_smrs(struct ehea_port_res *pr)
1026{
1027 u64 hret;
1028 struct ehea_adapter *adapter = pr->port->adapter;
1029
1030 hret = ehea_h_register_smr(adapter->handle, adapter->mr.handle,
1031 adapter->mr.vaddr, EHEA_MR_ACC_CTRL,
1032 adapter->pd, &pr->send_mr);
1033 if (hret != H_SUCCESS)
1034 goto out;
1035
1036 hret = ehea_h_register_smr(adapter->handle, adapter->mr.handle,
1037 adapter->mr.vaddr, EHEA_MR_ACC_CTRL,
1038 adapter->pd, &pr->recv_mr);
1039 if (hret != H_SUCCESS)
1040 goto out_freeres;
1041
1042 return 0;
1043
1044out_freeres:
1045 hret = ehea_h_free_resource(adapter->handle, pr->send_mr.handle);
1046 if (hret != H_SUCCESS)
1047 ehea_error("failed freeing SMR");
1048out:
1049 return -EIO;
1050}
1051
1052static int ehea_rem_smrs(struct ehea_port_res *pr)
1053{
1054 struct ehea_adapter *adapter = pr->port->adapter;
1055 int ret = 0;
1056 u64 hret;
1057
1058 hret = ehea_h_free_resource(adapter->handle, pr->send_mr.handle);
1059 if (hret != H_SUCCESS) {
1060 ret = -EIO;
1061 ehea_error("failed freeing send SMR for pr=%p", pr);
1062 }
1063
1064 hret = ehea_h_free_resource(adapter->handle, pr->recv_mr.handle);
1065 if (hret != H_SUCCESS) {
1066 ret = -EIO;
1067 ehea_error("failed freeing recv SMR for pr=%p", pr);
1068 }
1069
1070 return ret;
1071}
1072
1073static int ehea_init_q_skba(struct ehea_q_skb_arr *q_skba, int max_q_entries)
1074{
1075 int arr_size = sizeof(void*) * max_q_entries;
1076
1077 q_skba->arr = vmalloc(arr_size);
1078 if (!q_skba->arr)
1079 return -ENOMEM;
1080
1081 memset(q_skba->arr, 0, arr_size);
1082
1083 q_skba->len = max_q_entries;
1084 q_skba->index = 0;
1085 q_skba->os_skbs = 0;
1086
1087 return 0;
1088}
1089
1090static int ehea_init_port_res(struct ehea_port *port, struct ehea_port_res *pr,
1091 struct port_res_cfg *pr_cfg, int queue_token)
1092{
1093 struct ehea_adapter *adapter = port->adapter;
1094 enum ehea_eq_type eq_type = EHEA_EQ;
1095 struct ehea_qp_init_attr *init_attr = NULL;
1096 int ret = -EIO;
1097
1098 memset(pr, 0, sizeof(struct ehea_port_res));
1099
1100 pr->port = port;
1101 spin_lock_init(&pr->send_lock);
1102 spin_lock_init(&pr->recv_lock);
1103 spin_lock_init(&pr->xmit_lock);
1104 spin_lock_init(&pr->netif_queue);
1105
1106 pr->recv_eq = ehea_create_eq(adapter, eq_type, EHEA_MAX_ENTRIES_EQ, 0);
1107 if (!pr->recv_eq) {
1108 ehea_error("create_eq failed (recv_eq)");
1109 goto out_free;
1110 }
1111
1112 pr->send_eq = ehea_create_eq(adapter, eq_type, EHEA_MAX_ENTRIES_EQ, 0);
1113 if (!pr->send_eq) {
1114 ehea_error("create_eq failed (send_eq)");
1115 goto out_free;
1116 }
1117
1118 pr->recv_cq = ehea_create_cq(adapter, pr_cfg->max_entries_rcq,
1119 pr->recv_eq->fw_handle,
1120 port->logical_port_id);
1121 if (!pr->recv_cq) {
1122 ehea_error("create_cq failed (cq_recv)");
1123 goto out_free;
1124 }
1125
1126 pr->send_cq = ehea_create_cq(adapter, pr_cfg->max_entries_scq,
1127 pr->send_eq->fw_handle,
1128 port->logical_port_id);
1129 if (!pr->send_cq) {
1130 ehea_error("create_cq failed (cq_send)");
1131 goto out_free;
1132 }
1133
1134 if (netif_msg_ifup(port))
1135 ehea_info("Send CQ: act_nr_cqes=%d, Recv CQ: act_nr_cqes=%d",
1136 pr->send_cq->attr.act_nr_of_cqes,
1137 pr->recv_cq->attr.act_nr_of_cqes);
1138
1139 init_attr = kzalloc(sizeof(*init_attr), GFP_KERNEL);
1140 if (!init_attr) {
1141 ret = -ENOMEM;
1142 ehea_error("no mem for ehea_qp_init_attr");
1143 goto out_free;
1144 }
1145
1146 init_attr->low_lat_rq1 = 1;
1147 init_attr->signalingtype = 1; /* generate CQE if specified in WQE */
1148 init_attr->rq_count = 3;
1149 init_attr->qp_token = queue_token;
1150 init_attr->max_nr_send_wqes = pr_cfg->max_entries_sq;
1151 init_attr->max_nr_rwqes_rq1 = pr_cfg->max_entries_rq1;
1152 init_attr->max_nr_rwqes_rq2 = pr_cfg->max_entries_rq2;
1153 init_attr->max_nr_rwqes_rq3 = pr_cfg->max_entries_rq3;
1154 init_attr->wqe_size_enc_sq = EHEA_SG_SQ;
1155 init_attr->wqe_size_enc_rq1 = EHEA_SG_RQ1;
1156 init_attr->wqe_size_enc_rq2 = EHEA_SG_RQ2;
1157 init_attr->wqe_size_enc_rq3 = EHEA_SG_RQ3;
1158 init_attr->rq2_threshold = EHEA_RQ2_THRESHOLD;
1159 init_attr->rq3_threshold = EHEA_RQ3_THRESHOLD;
1160 init_attr->port_nr = port->logical_port_id;
1161 init_attr->send_cq_handle = pr->send_cq->fw_handle;
1162 init_attr->recv_cq_handle = pr->recv_cq->fw_handle;
1163 init_attr->aff_eq_handle = port->qp_eq->fw_handle;
1164
1165 pr->qp = ehea_create_qp(adapter, adapter->pd, init_attr);
1166 if (!pr->qp) {
1167 ehea_error("create_qp failed");
1168 ret = -EIO;
1169 goto out_free;
1170 }
1171
1172 if (netif_msg_ifup(port))
1173 ehea_info("QP: qp_nr=%d\n act_nr_snd_wqe=%d\n nr_rwqe_rq1=%d\n "
1174 "nr_rwqe_rq2=%d\n nr_rwqe_rq3=%d", init_attr->qp_nr,
1175 init_attr->act_nr_send_wqes,
1176 init_attr->act_nr_rwqes_rq1,
1177 init_attr->act_nr_rwqes_rq2,
1178 init_attr->act_nr_rwqes_rq3);
1179
1180 ret = ehea_init_q_skba(&pr->sq_skba, init_attr->act_nr_send_wqes + 1);
1181 ret |= ehea_init_q_skba(&pr->rq1_skba, init_attr->act_nr_rwqes_rq1 + 1);
1182 ret |= ehea_init_q_skba(&pr->rq2_skba, init_attr->act_nr_rwqes_rq2 + 1);
1183 ret |= ehea_init_q_skba(&pr->rq3_skba, init_attr->act_nr_rwqes_rq3 + 1);
1184 if (ret)
1185 goto out_free;
1186
1187 pr->swqe_refill_th = init_attr->act_nr_send_wqes / 10;
1188 if (ehea_gen_smrs(pr) != 0) {
1189 ret = -EIO;
1190 goto out_free;
1191 }
1192 tasklet_init(&pr->send_comp_task, ehea_send_irq_tasklet,
1193 (unsigned long)pr);
1194 atomic_set(&pr->swqe_avail, init_attr->act_nr_send_wqes - 1);
1195
1196 kfree(init_attr);
1197 ret = 0;
1198 goto out;
1199
1200out_free:
1201 kfree(init_attr);
1202 vfree(pr->sq_skba.arr);
1203 vfree(pr->rq1_skba.arr);
1204 vfree(pr->rq2_skba.arr);
1205 vfree(pr->rq3_skba.arr);
1206 ehea_destroy_qp(pr->qp);
1207 ehea_destroy_cq(pr->send_cq);
1208 ehea_destroy_cq(pr->recv_cq);
1209 ehea_destroy_eq(pr->send_eq);
1210 ehea_destroy_eq(pr->recv_eq);
1211out:
1212 return ret;
1213}
1214
1215static int ehea_clean_portres(struct ehea_port *port, struct ehea_port_res *pr)
1216{
1217 int ret, i;
1218
1219 ret = ehea_destroy_qp(pr->qp);
1220
1221 if (!ret) {
1222 ehea_destroy_cq(pr->send_cq);
1223 ehea_destroy_cq(pr->recv_cq);
1224 ehea_destroy_eq(pr->send_eq);
1225 ehea_destroy_eq(pr->recv_eq);
1226
1227 for (i = 0; i < pr->rq1_skba.len; i++)
1228 if (pr->rq1_skba.arr[i])
1229 dev_kfree_skb(pr->rq1_skba.arr[i]);
1230
1231 for (i = 0; i < pr->rq2_skba.len; i++)
1232 if (pr->rq2_skba.arr[i])
1233 dev_kfree_skb(pr->rq2_skba.arr[i]);
1234
1235 for (i = 0; i < pr->rq3_skba.len; i++)
1236 if (pr->rq3_skba.arr[i])
1237 dev_kfree_skb(pr->rq3_skba.arr[i]);
1238
1239 for (i = 0; i < pr->sq_skba.len; i++)
1240 if (pr->sq_skba.arr[i])
1241 dev_kfree_skb(pr->sq_skba.arr[i]);
1242
1243 vfree(pr->rq1_skba.arr);
1244 vfree(pr->rq2_skba.arr);
1245 vfree(pr->rq3_skba.arr);
1246 vfree(pr->sq_skba.arr);
1247 ret = ehea_rem_smrs(pr);
1248 }
1249 return ret;
1250}
1251
1252/*
1253 * The write_* functions store information in swqe which is used by
1254 * the hardware to calculate the ip/tcp/udp checksum
1255 */
1256
1257static inline void write_ip_start_end(struct ehea_swqe *swqe,
1258 const struct sk_buff *skb)
1259{
1260 swqe->ip_start = (u8)(((u64)skb->nh.iph) - ((u64)skb->data));
1261 swqe->ip_end = (u8)(swqe->ip_start + skb->nh.iph->ihl * 4 - 1);
1262}
1263
1264static inline void write_tcp_offset_end(struct ehea_swqe *swqe,
1265 const struct sk_buff *skb)
1266{
1267 swqe->tcp_offset =
1268 (u8)(swqe->ip_end + 1 + offsetof(struct tcphdr, check));
1269
1270 swqe->tcp_end = (u16)skb->len - 1;
1271}
1272
1273static inline void write_udp_offset_end(struct ehea_swqe *swqe,
1274 const struct sk_buff *skb)
1275{
1276 swqe->tcp_offset =
1277 (u8)(swqe->ip_end + 1 + offsetof(struct udphdr, check));
1278
1279 swqe->tcp_end = (u16)skb->len - 1;
1280}
1281
1282
1283static void write_swqe2_TSO(struct sk_buff *skb,
1284 struct ehea_swqe *swqe, u32 lkey)
1285{
1286 struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry;
1287 u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0];
1288 int skb_data_size = skb->len - skb->data_len;
1289 int headersize;
1290 u64 tmp_addr;
1291
1292 /* Packet is TCP with TSO enabled */
1293 swqe->tx_control |= EHEA_SWQE_TSO;
1294 swqe->mss = skb_shinfo(skb)->gso_size;
1295 /* copy only eth/ip/tcp headers to immediate data and
1296 * the rest of skb->data to sg1entry
1297 */
1298 headersize = ETH_HLEN + (skb->nh.iph->ihl * 4) + (skb->h.th->doff * 4);
1299
1300 skb_data_size = skb->len - skb->data_len;
1301
1302 if (skb_data_size >= headersize) {
1303 /* copy immediate data */
1304 memcpy(imm_data, skb->data, headersize);
1305 swqe->immediate_data_length = headersize;
1306
1307 if (skb_data_size > headersize) {
1308 /* set sg1entry data */
1309 sg1entry->l_key = lkey;
1310 sg1entry->len = skb_data_size - headersize;
1311
1312 tmp_addr = (u64)(skb->data + headersize);
1313 sg1entry->vaddr = tmp_addr;
1314 swqe->descriptors++;
1315 }
1316 } else
1317 ehea_error("cannot handle fragmented headers");
1318}
1319
1320static void write_swqe2_nonTSO(struct sk_buff *skb,
1321 struct ehea_swqe *swqe, u32 lkey)
1322{
1323 int skb_data_size = skb->len - skb->data_len;
1324 u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0];
1325 struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry;
1326 u64 tmp_addr;
1327
1328 /* Packet is any nonTSO type
1329 *
1330 * Copy as much as possible skb->data to immediate data and
1331 * the rest to sg1entry
1332 */
1333 if (skb_data_size >= SWQE2_MAX_IMM) {
1334 /* copy immediate data */
1335 memcpy(imm_data, skb->data, SWQE2_MAX_IMM);
1336
1337 swqe->immediate_data_length = SWQE2_MAX_IMM;
1338
1339 if (skb_data_size > SWQE2_MAX_IMM) {
1340 /* copy sg1entry data */
1341 sg1entry->l_key = lkey;
1342 sg1entry->len = skb_data_size - SWQE2_MAX_IMM;
1343 tmp_addr = (u64)(skb->data + SWQE2_MAX_IMM);
1344 sg1entry->vaddr = tmp_addr;
1345 swqe->descriptors++;
1346 }
1347 } else {
1348 memcpy(imm_data, skb->data, skb_data_size);
1349 swqe->immediate_data_length = skb_data_size;
1350 }
1351}
1352
1353static inline void write_swqe2_data(struct sk_buff *skb, struct net_device *dev,
1354 struct ehea_swqe *swqe, u32 lkey)
1355{
1356 struct ehea_vsgentry *sg_list, *sg1entry, *sgentry;
1357 skb_frag_t *frag;
1358 int nfrags, sg1entry_contains_frag_data, i;
1359 u64 tmp_addr;
1360
1361 nfrags = skb_shinfo(skb)->nr_frags;
1362 sg1entry = &swqe->u.immdata_desc.sg_entry;
1363 sg_list = (struct ehea_vsgentry*)&swqe->u.immdata_desc.sg_list;
1364 swqe->descriptors = 0;
1365 sg1entry_contains_frag_data = 0;
1366
1367 if ((dev->features & NETIF_F_TSO) && skb_shinfo(skb)->gso_size)
1368 write_swqe2_TSO(skb, swqe, lkey);
1369 else
1370 write_swqe2_nonTSO(skb, swqe, lkey);
1371
1372 /* write descriptors */
1373 if (nfrags > 0) {
1374 if (swqe->descriptors == 0) {
1375 /* sg1entry not yet used */
1376 frag = &skb_shinfo(skb)->frags[0];
1377
1378 /* copy sg1entry data */
1379 sg1entry->l_key = lkey;
1380 sg1entry->len = frag->size;
1381 tmp_addr = (u64)(page_address(frag->page)
1382 + frag->page_offset);
1383 sg1entry->vaddr = tmp_addr;
1384 swqe->descriptors++;
1385 sg1entry_contains_frag_data = 1;
1386 }
1387
1388 for (i = sg1entry_contains_frag_data; i < nfrags; i++) {
1389
1390 frag = &skb_shinfo(skb)->frags[i];
1391 sgentry = &sg_list[i - sg1entry_contains_frag_data];
1392
1393 sgentry->l_key = lkey;
1394 sgentry->len = frag->size;
1395
1396 tmp_addr = (u64)(page_address(frag->page)
1397 + frag->page_offset);
1398 sgentry->vaddr = tmp_addr;
1399 swqe->descriptors++;
1400 }
1401 }
1402}
1403
1404static int ehea_broadcast_reg_helper(struct ehea_port *port, u32 hcallid)
1405{
1406 int ret = 0;
1407 u64 hret;
1408 u8 reg_type;
1409
1410 /* De/Register untagged packets */
1411 reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_UNTAGGED;
1412 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1413 port->logical_port_id,
1414 reg_type, port->mac_addr, 0, hcallid);
1415 if (hret != H_SUCCESS) {
1416 ehea_error("reg_dereg_bcmc failed (tagged)");
1417 ret = -EIO;
1418 goto out_herr;
1419 }
1420
1421 /* De/Register VLAN packets */
1422 reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_VLANID_ALL;
1423 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1424 port->logical_port_id,
1425 reg_type, port->mac_addr, 0, hcallid);
1426 if (hret != H_SUCCESS) {
1427 ehea_error("reg_dereg_bcmc failed (vlan)");
1428 ret = -EIO;
1429 }
1430out_herr:
1431 return ret;
1432}
1433
1434static int ehea_set_mac_addr(struct net_device *dev, void *sa)
1435{
1436 struct ehea_port *port = netdev_priv(dev);
1437 struct sockaddr *mac_addr = sa;
1438 struct hcp_ehea_port_cb0 *cb0;
1439 int ret;
1440 u64 hret;
1441
1442 if (!is_valid_ether_addr(mac_addr->sa_data)) {
1443 ret = -EADDRNOTAVAIL;
1444 goto out;
1445 }
1446
1447 cb0 = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL);
1448 if (!cb0) {
1449 ehea_error("no mem for cb0");
1450 ret = -ENOMEM;
1451 goto out;
1452 }
1453
1454 memcpy(&(cb0->port_mac_addr), &(mac_addr->sa_data[0]), ETH_ALEN);
1455
1456 cb0->port_mac_addr = cb0->port_mac_addr >> 16;
1457
1458 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1459 port->logical_port_id, H_PORT_CB0,
1460 EHEA_BMASK_SET(H_PORT_CB0_MAC, 1), cb0);
1461 if (hret != H_SUCCESS) {
1462 ret = -EIO;
1463 goto out_free;
1464 }
1465
1466 memcpy(dev->dev_addr, mac_addr->sa_data, dev->addr_len);
1467
1468 /* Deregister old MAC in pHYP */
1469 ret = ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
1470 if (ret)
1471 goto out_free;
1472
1473 port->mac_addr = cb0->port_mac_addr << 16;
1474
1475 /* Register new MAC in pHYP */
1476 ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
1477 if (ret)
1478 goto out_free;
1479
1480 ret = 0;
1481out_free:
1482 kfree(cb0);
1483out:
1484 return ret;
1485}
1486
1487static void ehea_promiscuous_error(u64 hret, int enable)
1488{
1489 ehea_info("Hypervisor denied %sabling promiscuous mode.%s",
1490 enable == 1 ? "en" : "dis",
1491 hret != H_AUTHORITY ? "" : " Another partition owning a "
1492 "logical port on the same physical port might have altered "
1493 "promiscuous mode first.");
1494}
1495
1496static void ehea_promiscuous(struct net_device *dev, int enable)
1497{
1498 struct ehea_port *port = netdev_priv(dev);
1499 struct hcp_ehea_port_cb7 *cb7;
1500 u64 hret;
1501
1502 if ((enable && port->promisc) || (!enable && !port->promisc))
1503 return;
1504
1505 cb7 = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL);
1506 if (!cb7) {
1507 ehea_error("no mem for cb7");
1508 goto out;
1509 }
1510
1511 /* Modify Pxs_DUCQPN in CB7 */
1512 cb7->def_uc_qpn = enable == 1 ? port->port_res[0].qp->fw_handle : 0;
1513
1514 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1515 port->logical_port_id,
1516 H_PORT_CB7, H_PORT_CB7_DUCQPN, cb7);
1517 if (hret) {
1518 ehea_promiscuous_error(hret, enable);
1519 goto out;
1520 }
1521
1522 port->promisc = enable;
1523out:
1524 kfree(cb7);
1525 return;
1526}
1527
1528static u64 ehea_multicast_reg_helper(struct ehea_port *port, u64 mc_mac_addr,
1529 u32 hcallid)
1530{
1531 u64 hret;
1532 u8 reg_type;
1533
1534 reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST
1535 | EHEA_BCMC_UNTAGGED;
1536
1537 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1538 port->logical_port_id,
1539 reg_type, mc_mac_addr, 0, hcallid);
1540 if (hret)
1541 goto out;
1542
1543 reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST
1544 | EHEA_BCMC_VLANID_ALL;
1545
1546 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1547 port->logical_port_id,
1548 reg_type, mc_mac_addr, 0, hcallid);
1549out:
1550 return hret;
1551}
1552
1553static int ehea_drop_multicast_list(struct net_device *dev)
1554{
1555 struct ehea_port *port = netdev_priv(dev);
1556 struct ehea_mc_list *mc_entry = port->mc_list;
1557 struct list_head *pos;
1558 struct list_head *temp;
1559 int ret = 0;
1560 u64 hret;
1561
1562 list_for_each_safe(pos, temp, &(port->mc_list->list)) {
1563 mc_entry = list_entry(pos, struct ehea_mc_list, list);
1564
1565 hret = ehea_multicast_reg_helper(port, mc_entry->macaddr,
1566 H_DEREG_BCMC);
1567 if (hret) {
1568 ehea_error("failed deregistering mcast MAC");
1569 ret = -EIO;
1570 }
1571
1572 list_del(pos);
1573 kfree(mc_entry);
1574 }
1575 return ret;
1576}
1577
1578static void ehea_allmulti(struct net_device *dev, int enable)
1579{
1580 struct ehea_port *port = netdev_priv(dev);
1581 u64 hret;
1582
1583 if (!port->allmulti) {
1584 if (enable) {
1585 /* Enable ALLMULTI */
1586 ehea_drop_multicast_list(dev);
1587 hret = ehea_multicast_reg_helper(port, 0, H_REG_BCMC);
1588 if (!hret)
1589 port->allmulti = 1;
1590 else
1591 ehea_error("failed enabling IFF_ALLMULTI");
1592 }
1593 } else
1594 if (!enable) {
1595 /* Disable ALLMULTI */
1596 hret = ehea_multicast_reg_helper(port, 0, H_DEREG_BCMC);
1597 if (!hret)
1598 port->allmulti = 0;
1599 else
1600 ehea_error("failed disabling IFF_ALLMULTI");
1601 }
1602}
1603
1604static void ehea_add_multicast_entry(struct ehea_port* port, u8* mc_mac_addr)
1605{
1606 struct ehea_mc_list *ehea_mcl_entry;
1607 u64 hret;
1608
1609 ehea_mcl_entry = kzalloc(sizeof(*ehea_mcl_entry), GFP_KERNEL);
1610 if (!ehea_mcl_entry) {
1611 ehea_error("no mem for mcl_entry");
1612 return;
1613 }
1614
1615 INIT_LIST_HEAD(&ehea_mcl_entry->list);
1616
1617 memcpy(&ehea_mcl_entry->macaddr, mc_mac_addr, ETH_ALEN);
1618
1619 hret = ehea_multicast_reg_helper(port, ehea_mcl_entry->macaddr,
1620 H_REG_BCMC);
1621 if (!hret)
1622 list_add(&ehea_mcl_entry->list, &port->mc_list->list);
1623 else {
1624 ehea_error("failed registering mcast MAC");
1625 kfree(ehea_mcl_entry);
1626 }
1627}
1628
1629static void ehea_set_multicast_list(struct net_device *dev)
1630{
1631 struct ehea_port *port = netdev_priv(dev);
1632 struct dev_mc_list *k_mcl_entry;
1633 int ret, i;
1634
1635 if (dev->flags & IFF_PROMISC) {
1636 ehea_promiscuous(dev, 1);
1637 return;
1638 }
1639 ehea_promiscuous(dev, 0);
1640
1641 if (dev->flags & IFF_ALLMULTI) {
1642 ehea_allmulti(dev, 1);
1643 return;
1644 }
1645 ehea_allmulti(dev, 0);
1646
1647 if (dev->mc_count) {
1648 ret = ehea_drop_multicast_list(dev);
1649 if (ret) {
1650 /* Dropping the current multicast list failed.
1651 * Enabling ALL_MULTI is the best we can do.
1652 */
1653 ehea_allmulti(dev, 1);
1654 }
1655
1656 if (dev->mc_count > port->adapter->max_mc_mac) {
1657 ehea_info("Mcast registration limit reached (0x%lx). "
1658 "Use ALLMULTI!",
1659 port->adapter->max_mc_mac);
1660 goto out;
1661 }
1662
1663 for (i = 0, k_mcl_entry = dev->mc_list;
1664 i < dev->mc_count;
1665 i++, k_mcl_entry = k_mcl_entry->next) {
1666 ehea_add_multicast_entry(port, k_mcl_entry->dmi_addr);
1667 }
1668 }
1669out:
1670 return;
1671}
1672
1673static int ehea_change_mtu(struct net_device *dev, int new_mtu)
1674{
1675 if ((new_mtu < 68) || (new_mtu > EHEA_MAX_PACKET_SIZE))
1676 return -EINVAL;
1677 dev->mtu = new_mtu;
1678 return 0;
1679}
1680
1681static void ehea_xmit2(struct sk_buff *skb, struct net_device *dev,
1682 struct ehea_swqe *swqe, u32 lkey)
1683{
1684 if (skb->protocol == htons(ETH_P_IP)) {
1685 /* IPv4 */
1686 swqe->tx_control |= EHEA_SWQE_CRC
1687 | EHEA_SWQE_IP_CHECKSUM
1688 | EHEA_SWQE_TCP_CHECKSUM
1689 | EHEA_SWQE_IMM_DATA_PRESENT
1690 | EHEA_SWQE_DESCRIPTORS_PRESENT;
1691
1692 write_ip_start_end(swqe, skb);
1693
1694 if (skb->nh.iph->protocol == IPPROTO_UDP) {
1695 if ((skb->nh.iph->frag_off & IP_MF) ||
1696 (skb->nh.iph->frag_off & IP_OFFSET))
1697 /* IP fragment, so don't change cs */
1698 swqe->tx_control &= ~EHEA_SWQE_TCP_CHECKSUM;
1699 else
1700 write_udp_offset_end(swqe, skb);
1701
1702 } else if (skb->nh.iph->protocol == IPPROTO_TCP) {
1703 write_tcp_offset_end(swqe, skb);
1704 }
1705
1706 /* icmp (big data) and ip segmentation packets (all other ip
1707 packets) do not require any special handling */
1708
1709 } else {
1710 /* Other Ethernet Protocol */
1711 swqe->tx_control |= EHEA_SWQE_CRC
1712 | EHEA_SWQE_IMM_DATA_PRESENT
1713 | EHEA_SWQE_DESCRIPTORS_PRESENT;
1714 }
1715
1716 write_swqe2_data(skb, dev, swqe, lkey);
1717}
1718
1719static void ehea_xmit3(struct sk_buff *skb, struct net_device *dev,
1720 struct ehea_swqe *swqe)
1721{
1722 int nfrags = skb_shinfo(skb)->nr_frags;
1723 u8 *imm_data = &swqe->u.immdata_nodesc.immediate_data[0];
1724 skb_frag_t *frag;
1725 int i;
1726
1727 if (skb->protocol == htons(ETH_P_IP)) {
1728 /* IPv4 */
1729 write_ip_start_end(swqe, skb);
1730
1731 if (skb->nh.iph->protocol == IPPROTO_TCP) {
1732 swqe->tx_control |= EHEA_SWQE_CRC
1733 | EHEA_SWQE_IP_CHECKSUM
1734 | EHEA_SWQE_TCP_CHECKSUM
1735 | EHEA_SWQE_IMM_DATA_PRESENT;
1736
1737 write_tcp_offset_end(swqe, skb);
1738
1739 } else if (skb->nh.iph->protocol == IPPROTO_UDP) {
1740 if ((skb->nh.iph->frag_off & IP_MF) ||
1741 (skb->nh.iph->frag_off & IP_OFFSET))
1742 /* IP fragment, so don't change cs */
1743 swqe->tx_control |= EHEA_SWQE_CRC
1744 | EHEA_SWQE_IMM_DATA_PRESENT;
1745 else {
1746 swqe->tx_control |= EHEA_SWQE_CRC
1747 | EHEA_SWQE_IP_CHECKSUM
1748 | EHEA_SWQE_TCP_CHECKSUM
1749 | EHEA_SWQE_IMM_DATA_PRESENT;
1750
1751 write_udp_offset_end(swqe, skb);
1752 }
1753 } else {
1754 /* icmp (big data) and
1755 ip segmentation packets (all other ip packets) */
1756 swqe->tx_control |= EHEA_SWQE_CRC
1757 | EHEA_SWQE_IP_CHECKSUM
1758 | EHEA_SWQE_IMM_DATA_PRESENT;
1759 }
1760 } else {
1761 /* Other Ethernet Protocol */
1762 swqe->tx_control |= EHEA_SWQE_CRC | EHEA_SWQE_IMM_DATA_PRESENT;
1763 }
1764 /* copy (immediate) data */
1765 if (nfrags == 0) {
1766 /* data is in a single piece */
1767 memcpy(imm_data, skb->data, skb->len);
1768 } else {
1769 /* first copy data from the skb->data buffer ... */
1770 memcpy(imm_data, skb->data, skb->len - skb->data_len);
1771 imm_data += skb->len - skb->data_len;
1772
1773 /* ... then copy data from the fragments */
1774 for (i = 0; i < nfrags; i++) {
1775 frag = &skb_shinfo(skb)->frags[i];
1776 memcpy(imm_data,
1777 page_address(frag->page) + frag->page_offset,
1778 frag->size);
1779 imm_data += frag->size;
1780 }
1781 }
1782 swqe->immediate_data_length = skb->len;
1783 dev_kfree_skb(skb);
1784}
1785
1786static int ehea_start_xmit(struct sk_buff *skb, struct net_device *dev)
1787{
1788 struct ehea_port *port = netdev_priv(dev);
1789 struct ehea_swqe *swqe;
1790 unsigned long flags;
1791 u32 lkey;
1792 int swqe_index;
1793 struct ehea_port_res *pr = &port->port_res[0];
1794
1795 spin_lock(&pr->xmit_lock);
1796
1797 swqe = ehea_get_swqe(pr->qp, &swqe_index);
1798 memset(swqe, 0, SWQE_HEADER_SIZE);
1799 atomic_dec(&pr->swqe_avail);
1800
1801 if (skb->len <= SWQE3_MAX_IMM) {
1802 u32 sig_iv = port->sig_comp_iv;
1803 u32 swqe_num = pr->swqe_id_counter;
1804 ehea_xmit3(skb, dev, swqe);
1805 swqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE3_TYPE)
1806 | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, swqe_num);
1807 if (pr->swqe_ll_count >= (sig_iv - 1)) {
1808 swqe->wr_id |= EHEA_BMASK_SET(EHEA_WR_ID_REFILL,
1809 sig_iv);
1810 swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
1811 pr->swqe_ll_count = 0;
1812 } else
1813 pr->swqe_ll_count += 1;
1814 } else {
1815 swqe->wr_id =
1816 EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE2_TYPE)
1817 | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, pr->swqe_id_counter)
1818 | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, pr->sq_skba.index);
1819 pr->sq_skba.arr[pr->sq_skba.index] = skb;
1820
1821 pr->sq_skba.index++;
1822 pr->sq_skba.index &= (pr->sq_skba.len - 1);
1823
1824 lkey = pr->send_mr.lkey;
1825 ehea_xmit2(skb, dev, swqe, lkey);
1826
1827 if (pr->swqe_count >= (EHEA_SIG_IV_LONG - 1)) {
1828 swqe->wr_id |= EHEA_BMASK_SET(EHEA_WR_ID_REFILL,
1829 EHEA_SIG_IV_LONG);
1830 swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
1831 pr->swqe_count = 0;
1832 } else
1833 pr->swqe_count += 1;
1834 }
1835 pr->swqe_id_counter += 1;
1836
1837 if (port->vgrp && vlan_tx_tag_present(skb)) {
1838 swqe->tx_control |= EHEA_SWQE_VLAN_INSERT;
1839 swqe->vlan_tag = vlan_tx_tag_get(skb);
1840 }
1841
1842 if (netif_msg_tx_queued(port)) {
1843 ehea_info("post swqe on QP %d", pr->qp->init_attr.qp_nr);
1844 ehea_dump(swqe, sizeof(*swqe), "swqe");
1845 }
1846
1847 ehea_post_swqe(pr->qp, swqe);
1848 pr->tx_packets++;
1849
1850 if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) {
1851 spin_lock_irqsave(&pr->netif_queue, flags);
1852 if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) {
1853 netif_stop_queue(dev);
1854 pr->queue_stopped = 1;
1855 }
1856 spin_unlock_irqrestore(&pr->netif_queue, flags);
1857 }
1858 dev->trans_start = jiffies;
1859 spin_unlock(&pr->xmit_lock);
1860
1861 return NETDEV_TX_OK;
1862}
1863
1864static void ehea_vlan_rx_register(struct net_device *dev,
1865 struct vlan_group *grp)
1866{
1867 struct ehea_port *port = netdev_priv(dev);
1868 struct ehea_adapter *adapter = port->adapter;
1869 struct hcp_ehea_port_cb1 *cb1;
1870 u64 hret;
1871
1872 port->vgrp = grp;
1873
1874 cb1 = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL);
1875 if (!cb1) {
1876 ehea_error("no mem for cb1");
1877 goto out;
1878 }
1879
1880 if (grp)
1881 memset(cb1->vlan_filter, 0, sizeof(cb1->vlan_filter));
1882 else
1883 memset(cb1->vlan_filter, 0xFF, sizeof(cb1->vlan_filter));
1884
1885 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
1886 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
1887 if (hret != H_SUCCESS)
1888 ehea_error("modify_ehea_port failed");
1889
1890 kfree(cb1);
1891out:
1892 return;
1893}
1894
1895static void ehea_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
1896{
1897 struct ehea_port *port = netdev_priv(dev);
1898 struct ehea_adapter *adapter = port->adapter;
1899 struct hcp_ehea_port_cb1 *cb1;
1900 int index;
1901 u64 hret;
1902
1903 cb1 = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL);
1904 if (!cb1) {
1905 ehea_error("no mem for cb1");
1906 goto out;
1907 }
1908
1909 hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
1910 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
1911 if (hret != H_SUCCESS) {
1912 ehea_error("query_ehea_port failed");
1913 goto out;
1914 }
1915
1916 index = (vid / 64);
1917 cb1->vlan_filter[index] |= ((u64)(1 << (vid & 0x3F)));
1918
1919 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
1920 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
1921 if (hret != H_SUCCESS)
1922 ehea_error("modify_ehea_port failed");
1923out:
1924 kfree(cb1);
1925 return;
1926}
1927
1928static void ehea_vlan_rx_kill_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
1936 if (port->vgrp)
1937 port->vgrp->vlan_devices[vid] = NULL;
1938
1939 cb1 = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL);
1940 if (!cb1) {
1941 ehea_error("no mem for cb1");
1942 goto out;
1943 }
1944
1945 hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
1946 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
1947 if (hret != H_SUCCESS) {
1948 ehea_error("query_ehea_port failed");
1949 goto out;
1950 }
1951
1952 index = (vid / 64);
1953 cb1->vlan_filter[index] &= ~((u64)(1 << (vid & 0x3F)));
1954
1955 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
1956 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
1957 if (hret != H_SUCCESS)
1958 ehea_error("modify_ehea_port failed");
1959out:
1960 kfree(cb1);
1961 return;
1962}
1963
1964int ehea_activate_qp(struct ehea_adapter *adapter, struct ehea_qp *qp)
1965{
1966 int ret = -EIO;
1967 u64 hret;
1968 u16 dummy16 = 0;
1969 u64 dummy64 = 0;
1970 struct hcp_modify_qp_cb0* cb0;
1971
1972 cb0 = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL);
1973 if (!cb0) {
1974 ret = -ENOMEM;
1975 goto out;
1976 }
1977
1978 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
1979 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
1980 if (hret != H_SUCCESS) {
1981 ehea_error("query_ehea_qp failed (1)");
1982 goto out;
1983 }
1984
1985 cb0->qp_ctl_reg = H_QP_CR_STATE_INITIALIZED;
1986 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
1987 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
1988 &dummy64, &dummy64, &dummy16, &dummy16);
1989 if (hret != H_SUCCESS) {
1990 ehea_error("modify_ehea_qp failed (1)");
1991 goto out;
1992 }
1993
1994 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
1995 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
1996 if (hret != H_SUCCESS) {
1997 ehea_error("query_ehea_qp failed (2)");
1998 goto out;
1999 }
2000
2001 cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_INITIALIZED;
2002 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2003 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2004 &dummy64, &dummy64, &dummy16, &dummy16);
2005 if (hret != H_SUCCESS) {
2006 ehea_error("modify_ehea_qp failed (2)");
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 (3)");
2014 goto out;
2015 }
2016
2017 cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_RDY2SND;
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 (3)");
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 (4)");
2030 goto out;
2031 }
2032
2033 ret = 0;
2034out:
2035 kfree(cb0);
2036 return ret;
2037}
2038
2039static int ehea_port_res_setup(struct ehea_port *port, int def_qps,
2040 int add_tx_qps)
2041{
2042 int ret, i;
2043 struct port_res_cfg pr_cfg, pr_cfg_small_rx;
2044 enum ehea_eq_type eq_type = EHEA_EQ;
2045
2046 port->qp_eq = ehea_create_eq(port->adapter, eq_type,
2047 EHEA_MAX_ENTRIES_EQ, 1);
2048 if (!port->qp_eq) {
2049 ret = -EINVAL;
2050 ehea_error("ehea_create_eq failed (qp_eq)");
2051 goto out_kill_eq;
2052 }
2053
2054 pr_cfg.max_entries_rcq = rq1_entries + rq2_entries + rq3_entries;
2055 pr_cfg.max_entries_scq = sq_entries;
2056 pr_cfg.max_entries_sq = sq_entries;
2057 pr_cfg.max_entries_rq1 = rq1_entries;
2058 pr_cfg.max_entries_rq2 = rq2_entries;
2059 pr_cfg.max_entries_rq3 = rq3_entries;
2060
2061 pr_cfg_small_rx.max_entries_rcq = 1;
2062 pr_cfg_small_rx.max_entries_scq = sq_entries;
2063 pr_cfg_small_rx.max_entries_sq = sq_entries;
2064 pr_cfg_small_rx.max_entries_rq1 = 1;
2065 pr_cfg_small_rx.max_entries_rq2 = 1;
2066 pr_cfg_small_rx.max_entries_rq3 = 1;
2067
2068 for (i = 0; i < def_qps; i++) {
2069 ret = ehea_init_port_res(port, &port->port_res[i], &pr_cfg, i);
2070 if (ret)
2071 goto out_clean_pr;
2072 }
2073 for (i = def_qps; i < def_qps + add_tx_qps; i++) {
2074 ret = ehea_init_port_res(port, &port->port_res[i],
2075 &pr_cfg_small_rx, i);
2076 if (ret)
2077 goto out_clean_pr;
2078 }
2079
2080 return 0;
2081
2082out_clean_pr:
2083 while (--i >= 0)
2084 ehea_clean_portres(port, &port->port_res[i]);
2085
2086out_kill_eq:
2087 ehea_destroy_eq(port->qp_eq);
2088 return ret;
2089}
2090
2091static int ehea_clean_all_portres(struct ehea_port *port)
2092{
2093 int ret = 0;
2094 int i;
2095
2096 for(i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
2097 ret |= ehea_clean_portres(port, &port->port_res[i]);
2098
2099 ret |= ehea_destroy_eq(port->qp_eq);
2100
2101 return ret;
2102}
2103
2104static int ehea_up(struct net_device *dev)
2105{
2106 int ret, i;
2107 struct ehea_port *port = netdev_priv(dev);
2108 u64 mac_addr = 0;
2109
2110 if (port->state == EHEA_PORT_UP)
2111 return 0;
2112
2113 ret = ehea_port_res_setup(port, port->num_def_qps,
2114 port->num_add_tx_qps);
2115 if (ret) {
2116 ehea_error("port_res_failed");
2117 goto out;
2118 }
2119
2120 /* Set default QP for this port */
2121 ret = ehea_configure_port(port);
2122 if (ret) {
2123 ehea_error("ehea_configure_port failed. ret:%d", ret);
2124 goto out_clean_pr;
2125 }
2126
2127 ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
2128 if (ret) {
2129 ret = -EIO;
2130 ehea_error("out_clean_pr");
2131 goto out_clean_pr;
2132 }
2133 mac_addr = (*(u64*)dev->dev_addr) >> 16;
2134
2135 ret = ehea_reg_interrupts(dev);
2136 if (ret) {
2137 ehea_error("out_dereg_bc");
2138 goto out_dereg_bc;
2139 }
2140
2141 for(i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
2142 ret = ehea_activate_qp(port->adapter, port->port_res[i].qp);
2143 if (ret) {
2144 ehea_error("activate_qp failed");
2145 goto out_free_irqs;
2146 }
2147 }
2148
2149 for(i = 0; i < port->num_def_qps; i++) {
2150 ret = ehea_fill_port_res(&port->port_res[i]);
2151 if (ret) {
2152 ehea_error("out_free_irqs");
2153 goto out_free_irqs;
2154 }
2155 }
2156
2157 ret = 0;
2158 port->state = EHEA_PORT_UP;
2159 goto out;
2160
2161out_free_irqs:
2162 ehea_free_interrupts(dev);
2163
2164out_dereg_bc:
2165 ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
2166
2167out_clean_pr:
2168 ehea_clean_all_portres(port);
2169out:
2170 return ret;
2171}
2172
2173static int ehea_open(struct net_device *dev)
2174{
2175 int ret;
2176 struct ehea_port *port = netdev_priv(dev);
2177
2178 down(&port->port_lock);
2179
2180 if (netif_msg_ifup(port))
2181 ehea_info("enabling port %s", dev->name);
2182
2183 ret = ehea_up(dev);
2184 if (!ret)
2185 netif_start_queue(dev);
2186
2187 up(&port->port_lock);
2188
2189 return ret;
2190}
2191
2192static int ehea_down(struct net_device *dev)
2193{
2194 int ret, i;
2195 struct ehea_port *port = netdev_priv(dev);
2196
2197 if (port->state == EHEA_PORT_DOWN)
2198 return 0;
2199
2200 ehea_drop_multicast_list(dev);
2201 ehea_free_interrupts(dev);
2202
2203 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
2204 tasklet_kill(&port->port_res[i].send_comp_task);
2205
2206 ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
2207 ret = ehea_clean_all_portres(port);
2208 port->state = EHEA_PORT_DOWN;
2209 return ret;
2210}
2211
2212static int ehea_stop(struct net_device *dev)
2213{
2214 int ret;
2215 struct ehea_port *port = netdev_priv(dev);
2216
2217 if (netif_msg_ifdown(port))
2218 ehea_info("disabling port %s", dev->name);
2219
2220 flush_workqueue(port->adapter->ehea_wq);
2221 down(&port->port_lock);
2222 netif_stop_queue(dev);
2223 ret = ehea_down(dev);
2224 up(&port->port_lock);
2225 return ret;
2226}
2227
2228static void ehea_reset_port(void *data)
2229{
2230 int ret;
2231 struct net_device *dev = data;
2232 struct ehea_port *port = netdev_priv(dev);
2233
2234 port->resets++;
2235 down(&port->port_lock);
2236 netif_stop_queue(dev);
2237 netif_poll_disable(dev);
2238
2239 ret = ehea_down(dev);
2240 if (ret)
2241 ehea_error("ehea_down failed. not all resources are freed");
2242
2243 ret = ehea_up(dev);
2244 if (ret) {
2245 ehea_error("Reset device %s failed: ret=%d", dev->name, ret);
2246 goto out;
2247 }
2248
2249 if (netif_msg_timer(port))
2250 ehea_info("Device %s resetted successfully", dev->name);
2251
2252 netif_poll_enable(dev);
2253 netif_wake_queue(dev);
2254out:
2255 up(&port->port_lock);
2256 return;
2257}
2258
2259static void ehea_tx_watchdog(struct net_device *dev)
2260{
2261 struct ehea_port *port = netdev_priv(dev);
2262
2263 if (netif_carrier_ok(dev))
2264 queue_work(port->adapter->ehea_wq, &port->reset_task);
2265}
2266
2267int ehea_sense_adapter_attr(struct ehea_adapter *adapter)
2268{
2269 struct hcp_query_ehea *cb;
2270 u64 hret;
2271 int ret;
2272
2273 cb = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL);
2274 if (!cb) {
2275 ret = -ENOMEM;
2276 goto out;
2277 }
2278
2279 hret = ehea_h_query_ehea(adapter->handle, cb);
2280
2281 if (hret != H_SUCCESS) {
2282 ret = -EIO;
2283 goto out_herr;
2284 }
2285
2286 adapter->num_ports = cb->num_ports;
2287 adapter->max_mc_mac = cb->max_mc_mac - 1;
2288 ret = 0;
2289
2290out_herr:
2291 kfree(cb);
2292out:
2293 return ret;
2294}
2295
2296static int ehea_setup_single_port(struct ehea_port *port,
2297 struct device_node *dn)
2298{
2299 int ret;
2300 u64 hret;
2301 struct net_device *dev = port->netdev;
2302 struct ehea_adapter *adapter = port->adapter;
2303 struct hcp_ehea_port_cb4 *cb4;
2304 u32 *dn_log_port_id;
2305
2306 sema_init(&port->port_lock, 1);
2307 port->state = EHEA_PORT_DOWN;
2308 port->sig_comp_iv = sq_entries / 10;
2309
2310 if (!dn) {
2311 ehea_error("bad device node: dn=%p", dn);
2312 ret = -EINVAL;
2313 goto out;
2314 }
2315
2316 port->of_dev_node = dn;
2317
2318 /* Determine logical port id */
2319 dn_log_port_id = (u32*)get_property(dn, "ibm,hea-port-no", NULL);
2320
2321 if (!dn_log_port_id) {
2322 ehea_error("bad device node: dn_log_port_id=%p",
2323 dn_log_port_id);
2324 ret = -EINVAL;
2325 goto out;
2326 }
2327 port->logical_port_id = *dn_log_port_id;
2328
2329 port->mc_list = kzalloc(sizeof(struct ehea_mc_list), GFP_KERNEL);
2330 if (!port->mc_list) {
2331 ret = -ENOMEM;
2332 goto out;
2333 }
2334
2335 INIT_LIST_HEAD(&port->mc_list->list);
2336
2337 ehea_set_portspeed(port, EHEA_SPEED_AUTONEG);
2338
2339 ret = ehea_sense_port_attr(port);
2340 if (ret)
2341 goto out;
2342
2343 /* Enable Jumbo frames */
2344 cb4 = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL);
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
2383 INIT_WORK(&port->reset_task, ehea_reset_port, dev);
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);
2474 if (!adapter_handle) {
2475 dev_err(&dev->ofdev.dev, "failed getting handle for adapter"
2476 " '%s'\n", dev->ofdev.node->full_name);
2477 ret = -ENODEV;
2478 goto out_free_ad;
2479 }
2480
2481 adapter->handle = *adapter_handle;
2482 adapter->pd = EHEA_PD_ID;
2483
2484 dev->ofdev.dev.driver_data = adapter;
2485
2486 ret = ehea_reg_mr_adapter(adapter);
2487 if (ret) {
2488 dev_err(&dev->ofdev.dev, "reg_mr_adapter failed\n");
2489 goto out_free_ad;
2490 }
2491
2492 /* initialize adapter and ports */
2493 /* get adapter properties */
2494 ret = ehea_sense_adapter_attr(adapter);
2495 if (ret) {
2496 dev_err(&dev->ofdev.dev, "sense_adapter_attr failed: %d", ret);
2497 goto out_free_res;
2498 }
2499 dev_info(&dev->ofdev.dev, "%d eHEA ports found\n", adapter->num_ports);
2500
2501 adapter->neq = ehea_create_eq(adapter,
2502 EHEA_NEQ, EHEA_MAX_ENTRIES_EQ, 1);
2503 if (!adapter->neq) {
2504 dev_err(&dev->ofdev.dev, "NEQ creation failed");
2505 goto out_free_res;
2506 }
2507
2508 tasklet_init(&adapter->neq_tasklet, ehea_neq_tasklet,
2509 (unsigned long)adapter);
2510
2511 ret = ibmebus_request_irq(NULL, adapter->neq->attr.ist1,
2512 ehea_interrupt_neq, SA_INTERRUPT,
2513 "ehea_neq", adapter);
2514 if (ret) {
2515 dev_err(&dev->ofdev.dev, "requesting NEQ IRQ failed");
2516 goto out_kill_eq;
2517 }
2518
2519 adapter->ehea_wq = create_workqueue("ehea_wq");
2520 if (!adapter->ehea_wq)
2521 goto out_free_irq;
2522
2523 ret = ehea_setup_ports(adapter);
2524 if (ret) {
2525 dev_err(&dev->ofdev.dev, "setup_ports failed");
2526 goto out_kill_wq;
2527 }
2528
2529 ret = 0;
2530 goto out;
2531
2532out_kill_wq:
2533 destroy_workqueue(adapter->ehea_wq);
2534
2535out_free_irq:
2536 ibmebus_free_irq(NULL, adapter->neq->attr.ist1, adapter);
2537
2538out_kill_eq:
2539 ehea_destroy_eq(adapter->neq);
2540
2541out_free_res:
2542 ehea_h_free_resource(adapter->handle, adapter->mr.handle);
2543
2544out_free_ad:
2545 kfree(adapter);
2546out:
2547 return ret;
2548}
2549
2550static void ehea_shutdown_single_port(struct ehea_port *port)
2551{
2552 unregister_netdev(port->netdev);
2553 kfree(port->mc_list);
2554 free_netdev(port->netdev);
2555}
2556
2557static int __devexit ehea_remove(struct ibmebus_dev *dev)
2558{
2559 struct ehea_adapter *adapter = dev->ofdev.dev.driver_data;
2560 u64 hret;
2561 int i;
2562
2563 for (i = 0; i < adapter->num_ports; i++)
2564 if (adapter->port[i]) {
2565 ehea_shutdown_single_port(adapter->port[i]);
2566 adapter->port[i] = NULL;
2567 }
2568 destroy_workqueue(adapter->ehea_wq);
2569
2570 ibmebus_free_irq(NULL, adapter->neq->attr.ist1, adapter);
2571
2572 ehea_destroy_eq(adapter->neq);
2573
2574 hret = ehea_h_free_resource(adapter->handle, adapter->mr.handle);
2575 if (hret) {
2576 dev_err(&dev->ofdev.dev, "free_resource_mr failed");
2577 return -EIO;
2578 }
2579 kfree(adapter);
2580 return 0;
2581}
2582
2583static int check_module_parm(void)
2584{
2585 int ret = 0;
2586
2587 if ((rq1_entries < EHEA_MIN_ENTRIES_QP) ||
2588 (rq1_entries > EHEA_MAX_ENTRIES_RQ1)) {
2589 ehea_info("Bad parameter: rq1_entries");
2590 ret = -EINVAL;
2591 }
2592 if ((rq2_entries < EHEA_MIN_ENTRIES_QP) ||
2593 (rq2_entries > EHEA_MAX_ENTRIES_RQ2)) {
2594 ehea_info("Bad parameter: rq2_entries");
2595 ret = -EINVAL;
2596 }
2597 if ((rq3_entries < EHEA_MIN_ENTRIES_QP) ||
2598 (rq3_entries > EHEA_MAX_ENTRIES_RQ3)) {
2599 ehea_info("Bad parameter: rq3_entries");
2600 ret = -EINVAL;
2601 }
2602 if ((sq_entries < EHEA_MIN_ENTRIES_QP) ||
2603 (sq_entries > EHEA_MAX_ENTRIES_SQ)) {
2604 ehea_info("Bad parameter: sq_entries");
2605 ret = -EINVAL;
2606 }
2607
2608 return ret;
2609}
2610
2611static struct of_device_id ehea_device_table[] = {
2612 {
2613 .name = "lhea",
2614 .compatible = "IBM,lhea",
2615 },
2616 {},
2617};
2618
2619static struct ibmebus_driver ehea_driver = {
2620 .name = "ehea",
2621 .id_table = ehea_device_table,
2622 .probe = ehea_probe,
2623 .remove = ehea_remove,
2624};
2625
2626int __init ehea_module_init(void)
2627{
2628 int ret;
2629
2630 printk(KERN_INFO "IBM eHEA ethernet device driver (Release %s)\n",
2631 DRV_VERSION);
2632
2633 ret = check_module_parm();
2634 if (ret)
2635 goto out;
2636 ret = ibmebus_register_driver(&ehea_driver);
2637 if (ret)
2638 ehea_error("failed registering eHEA device driver on ebus");
2639
2640out:
2641 return ret;
2642}
2643
2644static void __exit ehea_module_exit(void)
2645{
2646 ibmebus_unregister_driver(&ehea_driver);
2647}
2648
2649module_init(ehea_module_init);
2650module_exit(ehea_module_exit);
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