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ehea: dynamic add / remove port
[linux-2.6-block.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) {
d2db9eea 79 printk(DRV_NAME " %s adr=%p ofs=%04x %016lx %016lx\n", msg,
7a291083
JBT		 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 }
27d7ff46
ACM		 394 skb_copy_to_linear_data(skb, ((char*)cqe) + 64,
395 cqe->num_bytes_transfered - 4);
7a291083
JBT		 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;
d2db9eea 558 struct ehea_qp *qp;
7a291083
JBT		 559 u32 qp_token;
560
561 eqe = ehea_poll_eq(port->qp_eq);
bb3a6449 562
7a291083 563 while (eqe) {
7a291083 564 qp_token = EHEA_BMASK_GET(EHEA_EQE_QP_TOKEN, eqe->entry);
bb3a6449
TK		 565 ehea_error("QP aff_err: entry=0x%lx, token=0x%x",
566 eqe->entry, qp_token);
d2db9eea
JBT		 567
568 qp = port->port_res[qp_token].qp;
569 ehea_error_data(port->adapter, qp->fw_handle);
bb3a6449 570 eqe = ehea_poll_eq(port->qp_eq);
7a291083
JBT		 571 }
572
d2db9eea
JBT		 573 queue_work(port->adapter->ehea_wq, &port->reset_task);
574
7a291083
JBT		 575 return IRQ_HANDLED;
576}
577
578static struct ehea_port *ehea_get_port(struct ehea_adapter *adapter,
579 int logical_port)
580{
581 int i;
582
1acf2318 583 for (i = 0; i < EHEA_MAX_PORTS; i++)
41b69c70
TK		 584 if (adapter->port[i])
585 if (adapter->port[i]->logical_port_id == logical_port)
586 return adapter->port[i];
7a291083
JBT		 587 return NULL;
588}
589
590int ehea_sense_port_attr(struct ehea_port *port)
591{
592 int ret;
593 u64 hret;
594 struct hcp_ehea_port_cb0 *cb0;
595
a1d261c5
TK		 596 cb0 = kzalloc(PAGE_SIZE, GFP_ATOMIC); /* May be called via */
597 if (!cb0) { /* ehea_neq_tasklet() */
7a291083
JBT		 598 ehea_error("no mem for cb0");
599 ret = -ENOMEM;
600 goto out;
601 }
602
603 hret = ehea_h_query_ehea_port(port->adapter->handle,
604 port->logical_port_id, H_PORT_CB0,
605 EHEA_BMASK_SET(H_PORT_CB0_ALL, 0xFFFF),
606 cb0);
607 if (hret != H_SUCCESS) {
608 ret = -EIO;
609 goto out_free;
610 }
611
612 /* MAC address */
613 port->mac_addr = cb0->port_mac_addr << 16;
614
615 if (!is_valid_ether_addr((u8*)&port->mac_addr)) {
616 ret = -EADDRNOTAVAIL;
617 goto out_free;
618 }
619
620 /* Port speed */
621 switch (cb0->port_speed) {
622 case H_SPEED_10M_H:
623 port->port_speed = EHEA_SPEED_10M;
624 port->full_duplex = 0;
625 break;
626 case H_SPEED_10M_F:
627 port->port_speed = EHEA_SPEED_10M;
628 port->full_duplex = 1;
629 break;
630 case H_SPEED_100M_H:
631 port->port_speed = EHEA_SPEED_100M;
632 port->full_duplex = 0;
633 break;
634 case H_SPEED_100M_F:
635 port->port_speed = EHEA_SPEED_100M;
636 port->full_duplex = 1;
637 break;
638 case H_SPEED_1G_F:
639 port->port_speed = EHEA_SPEED_1G;
640 port->full_duplex = 1;
641 break;
642 case H_SPEED_10G_F:
643 port->port_speed = EHEA_SPEED_10G;
644 port->full_duplex = 1;
645 break;
646 default:
647 port->port_speed = 0;
648 port->full_duplex = 0;
649 break;
650 }
651
e919b593
TK		 652 port->autoneg = 1;
653
7a291083
JBT		 654 /* Number of default QPs */
655 port->num_def_qps = cb0->num_default_qps;
656
657 if (!port->num_def_qps) {
658 ret = -EINVAL;
659 goto out_free;
660 }
661
662 if (port->num_def_qps >= EHEA_NUM_TX_QP)
663 port->num_add_tx_qps = 0;
664 else
665 port->num_add_tx_qps = EHEA_NUM_TX_QP - port->num_def_qps;
666
667 ret = 0;
668out_free:
669 if (ret || netif_msg_probe(port))
670 ehea_dump(cb0, sizeof(*cb0), "ehea_sense_port_attr");
671 kfree(cb0);
672out:
673 return ret;
674}
675
676int ehea_set_portspeed(struct ehea_port *port, u32 port_speed)
677{
678 struct hcp_ehea_port_cb4 *cb4;
679 u64 hret;
680 int ret = 0;
681
a1d261c5 682 cb4 = kzalloc(PAGE_SIZE, GFP_KERNEL);
7a291083
JBT		 683 if (!cb4) {
684 ehea_error("no mem for cb4");
685 ret = -ENOMEM;
686 goto out;
687 }
688
689 cb4->port_speed = port_speed;
690
691 netif_carrier_off(port->netdev);
692
693 hret = ehea_h_modify_ehea_port(port->adapter->handle,
694 port->logical_port_id,
695 H_PORT_CB4, H_PORT_CB4_SPEED, cb4);
696 if (hret == H_SUCCESS) {
697 port->autoneg = port_speed == EHEA_SPEED_AUTONEG ? 1 : 0;
698
699 hret = ehea_h_query_ehea_port(port->adapter->handle,
700 port->logical_port_id,
701 H_PORT_CB4, H_PORT_CB4_SPEED,
702 cb4);
703 if (hret == H_SUCCESS) {
704 switch (cb4->port_speed) {
705 case H_SPEED_10M_H:
706 port->port_speed = EHEA_SPEED_10M;
707 port->full_duplex = 0;
708 break;
709 case H_SPEED_10M_F:
710 port->port_speed = EHEA_SPEED_10M;
711 port->full_duplex = 1;
712 break;
713 case H_SPEED_100M_H:
714 port->port_speed = EHEA_SPEED_100M;
715 port->full_duplex = 0;
716 break;
717 case H_SPEED_100M_F:
718 port->port_speed = EHEA_SPEED_100M;
719 port->full_duplex = 1;
720 break;
721 case H_SPEED_1G_F:
722 port->port_speed = EHEA_SPEED_1G;
723 port->full_duplex = 1;
724 break;
725 case H_SPEED_10G_F:
726 port->port_speed = EHEA_SPEED_10G;
727 port->full_duplex = 1;
728 break;
729 default:
730 port->port_speed = 0;
731 port->full_duplex = 0;
732 break;
733 }
734 } else {
735 ehea_error("Failed sensing port speed");
736 ret = -EIO;
737 }
738 } else {
739 if (hret == H_AUTHORITY) {
7674a588 740 ehea_info("Hypervisor denied setting port speed");
7a291083
JBT		 741 ret = -EPERM;
742 } else {
743 ret = -EIO;
744 ehea_error("Failed setting port speed");
745 }
746 }
747 netif_carrier_on(port->netdev);
748 kfree(cb4);
749out:
750 return ret;
751}
752
753static void ehea_parse_eqe(struct ehea_adapter *adapter, u64 eqe)
754{
755 int ret;
756 u8 ec;
757 u8 portnum;
758 struct ehea_port *port;
759
760 ec = EHEA_BMASK_GET(NEQE_EVENT_CODE, eqe);
761 portnum = EHEA_BMASK_GET(NEQE_PORTNUM, eqe);
762 port = ehea_get_port(adapter, portnum);
763
764 switch (ec) {
765 case EHEA_EC_PORTSTATE_CHG: /* port state change */
766
767 if (!port) {
768 ehea_error("unknown portnum %x", portnum);
769 break;
770 }
771
772 if (EHEA_BMASK_GET(NEQE_PORT_UP, eqe)) {
773 if (!netif_carrier_ok(port->netdev)) {
1e1675cc 774 ret = ehea_sense_port_attr(port);
7a291083
JBT		 775 if (ret) {
776 ehea_error("failed resensing port "
777 "attributes");
778 break;
779 }
780
781 if (netif_msg_link(port))
782 ehea_info("%s: Logical port up: %dMbps "
783 "%s Duplex",
784 port->netdev->name,
785 port->port_speed,
786 port->full_duplex ==
787 1 ? "Full" : "Half");
788
789 netif_carrier_on(port->netdev);
790 netif_wake_queue(port->netdev);
791 }
792 } else
793 if (netif_carrier_ok(port->netdev)) {
794 if (netif_msg_link(port))
795 ehea_info("%s: Logical port down",
796 port->netdev->name);
797 netif_carrier_off(port->netdev);
798 netif_stop_queue(port->netdev);
799 }
800
801 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PORT_UP, eqe)) {
802 if (netif_msg_link(port))
803 ehea_info("%s: Physical port up",
804 port->netdev->name);
805 } else {
806 if (netif_msg_link(port))
807 ehea_info("%s: Physical port down",
808 port->netdev->name);
809 }
810
811 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PRIMARY, eqe))
812 ehea_info("External switch port is primary port");
813 else
814 ehea_info("External switch port is backup port");
815
816 break;
817 case EHEA_EC_ADAPTER_MALFUNC:
818 ehea_error("Adapter malfunction");
819 break;
820 case EHEA_EC_PORT_MALFUNC:
821 ehea_info("Port malfunction: Device: %s", port->netdev->name);
822 netif_carrier_off(port->netdev);
823 netif_stop_queue(port->netdev);
824 break;
825 default:
bff0a55f 826 ehea_error("unknown event code %x, eqe=0x%lX", ec, eqe);
7a291083
JBT		 827 break;
828 }
829}
830
831static void ehea_neq_tasklet(unsigned long data)
832{
833 struct ehea_adapter *adapter = (struct ehea_adapter*)data;
834 struct ehea_eqe *eqe;
835 u64 event_mask;
836
837 eqe = ehea_poll_eq(adapter->neq);
838 ehea_debug("eqe=%p", eqe);
839
840 while (eqe) {
841 ehea_debug("*eqe=%lx", eqe->entry);
842 ehea_parse_eqe(adapter, eqe->entry);
843 eqe = ehea_poll_eq(adapter->neq);
844 ehea_debug("next eqe=%p", eqe);
845 }
846
847 event_mask = EHEA_BMASK_SET(NELR_PORTSTATE_CHG, 1)
848 | EHEA_BMASK_SET(NELR_ADAPTER_MALFUNC, 1)
849 | EHEA_BMASK_SET(NELR_PORT_MALFUNC, 1);
850
851 ehea_h_reset_events(adapter->handle,
852 adapter->neq->fw_handle, event_mask);
853}
854
7d12e780 855static irqreturn_t ehea_interrupt_neq(int irq, void *param)
7a291083
JBT		 856{
857 struct ehea_adapter *adapter = param;
858 tasklet_hi_schedule(&adapter->neq_tasklet);
859 return IRQ_HANDLED;
860}
861
862
863static int ehea_fill_port_res(struct ehea_port_res *pr)
864{
865 int ret;
866 struct ehea_qp_init_attr *init_attr = &pr->qp->init_attr;
867
868 ret = ehea_init_fill_rq1(pr, init_attr->act_nr_rwqes_rq1
869 - init_attr->act_nr_rwqes_rq2
870 - init_attr->act_nr_rwqes_rq3 - 1);
871
872 ret |= ehea_refill_rq2(pr, init_attr->act_nr_rwqes_rq2 - 1);
873
874 ret |= ehea_refill_rq3(pr, init_attr->act_nr_rwqes_rq3 - 1);
875
876 return ret;
877}
878
879static int ehea_reg_interrupts(struct net_device *dev)
880{
881 struct ehea_port *port = netdev_priv(dev);
882 struct ehea_port_res *pr;
883 int i, ret;
884
885 for (i = 0; i < port->num_def_qps; i++) {
886 pr = &port->port_res[i];
887 snprintf(pr->int_recv_name, EHEA_IRQ_NAME_SIZE - 1
888 , "%s-recv%d", dev->name, i);
889 ret = ibmebus_request_irq(NULL, pr->recv_eq->attr.ist1,
890 ehea_recv_irq_handler,
38515e90 891 IRQF_DISABLED, pr->int_recv_name, pr);
7a291083
JBT		 892 if (ret) {
893 ehea_error("failed registering irq for ehea_recv_int:"
894 "port_res_nr:%d, ist=%X", i,
895 pr->recv_eq->attr.ist1);
896 goto out_free_seq;
897 }
898 if (netif_msg_ifup(port))
899 ehea_info("irq_handle 0x%X for funct ehea_recv_int %d "
900 "registered", pr->recv_eq->attr.ist1, i);
901 }
902
903 snprintf(port->int_aff_name, EHEA_IRQ_NAME_SIZE - 1, "%s-aff",
904 dev->name);
905
906 ret = ibmebus_request_irq(NULL, port->qp_eq->attr.ist1,
907 ehea_qp_aff_irq_handler,
38515e90 908 IRQF_DISABLED, port->int_aff_name, port);
7a291083
JBT		 909 if (ret) {
910 ehea_error("failed registering irq for qp_aff_irq_handler:"
911 "ist=%X", port->qp_eq->attr.ist1);
912 goto out_free_qpeq;
913 }
914
915 if (netif_msg_ifup(port))
916 ehea_info("irq_handle 0x%X for function qp_aff_irq_handler "
917 "registered", port->qp_eq->attr.ist1);
918
919 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
920 pr = &port->port_res[i];
921 snprintf(pr->int_send_name, EHEA_IRQ_NAME_SIZE - 1,
922 "%s-send%d", dev->name, i);
923 ret = ibmebus_request_irq(NULL, pr->send_eq->attr.ist1,
924 ehea_send_irq_handler,
38515e90 925 IRQF_DISABLED, pr->int_send_name,
7a291083
JBT		 926 pr);
927 if (ret) {
928 ehea_error("failed registering irq for ehea_send "
929 "port_res_nr:%d, ist=%X", i,
930 pr->send_eq->attr.ist1);
931 goto out_free_req;
932 }
933 if (netif_msg_ifup(port))
934 ehea_info("irq_handle 0x%X for function ehea_send_int "
935 "%d registered", pr->send_eq->attr.ist1, i);
936 }
937out:
938 return ret;
939
940out_free_req:
941 while (--i >= 0) {
942 u32 ist = port->port_res[i].send_eq->attr.ist1;
943 ibmebus_free_irq(NULL, ist, &port->port_res[i]);
944 }
945out_free_qpeq:
946 ibmebus_free_irq(NULL, port->qp_eq->attr.ist1, port);
947 i = port->num_def_qps;
948out_free_seq:
949 while (--i >= 0) {
950 u32 ist = port->port_res[i].recv_eq->attr.ist1;
951 ibmebus_free_irq(NULL, ist, &port->port_res[i]);
952 }
953 goto out;
954}
955
956static void ehea_free_interrupts(struct net_device *dev)
957{
958 struct ehea_port *port = netdev_priv(dev);
959 struct ehea_port_res *pr;
960 int i;
961
962 /* send */
963 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
964 pr = &port->port_res[i];
965 ibmebus_free_irq(NULL, pr->send_eq->attr.ist1, pr);
966 if (netif_msg_intr(port))
967 ehea_info("free send irq for res %d with handle 0x%X",
968 i, pr->send_eq->attr.ist1);
969 }
970
971 /* receive */
972 for (i = 0; i < port->num_def_qps; i++) {
973 pr = &port->port_res[i];
974 ibmebus_free_irq(NULL, pr->recv_eq->attr.ist1, pr);
975 if (netif_msg_intr(port))
976 ehea_info("free recv irq for res %d with handle 0x%X",
977 i, pr->recv_eq->attr.ist1);
978 }
979
980 /* associated events */
981 ibmebus_free_irq(NULL, port->qp_eq->attr.ist1, port);
982 if (netif_msg_intr(port))
983 ehea_info("associated event interrupt for handle 0x%X freed",
984 port->qp_eq->attr.ist1);
985}
986
987static int ehea_configure_port(struct ehea_port *port)
988{
989 int ret, i;
990 u64 hret, mask;
991 struct hcp_ehea_port_cb0 *cb0;
992
993 ret = -ENOMEM;
a1d261c5 994 cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL);
7a291083
JBT		 995 if (!cb0)
996 goto out;
997
998 cb0->port_rc = EHEA_BMASK_SET(PXLY_RC_VALID, 1)
999 | EHEA_BMASK_SET(PXLY_RC_IP_CHKSUM, 1)
1000 | EHEA_BMASK_SET(PXLY_RC_TCP_UDP_CHKSUM, 1)
1001 | EHEA_BMASK_SET(PXLY_RC_VLAN_XTRACT, 1)
1002 | EHEA_BMASK_SET(PXLY_RC_VLAN_TAG_FILTER,
1003 PXLY_RC_VLAN_FILTER)
1004 | EHEA_BMASK_SET(PXLY_RC_JUMBO_FRAME, 1);
1005
1006 for (i = 0; i < port->num_def_qps; i++)
602e0d10 1007 cb0->default_qpn_arr[i] = port->port_res[0].qp->init_attr.qp_nr;
7a291083
JBT		 1008
1009 if (netif_msg_ifup(port))
1010 ehea_dump(cb0, sizeof(*cb0), "ehea_configure_port");
1011
1012 mask = EHEA_BMASK_SET(H_PORT_CB0_PRC, 1)
1013 | EHEA_BMASK_SET(H_PORT_CB0_DEFQPNARRAY, 1);
1014
1015 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1016 port->logical_port_id,
1017 H_PORT_CB0, mask, cb0);
1018 ret = -EIO;
1019 if (hret != H_SUCCESS)
1020 goto out_free;
1021
1022 ret = 0;
1023
1024out_free:
1025 kfree(cb0);
1026out:
1027 return ret;
1028}
1029
1030static int ehea_gen_smrs(struct ehea_port_res *pr)
1031{
1032 u64 hret;
1033 struct ehea_adapter *adapter = pr->port->adapter;
1034
1035 hret = ehea_h_register_smr(adapter->handle, adapter->mr.handle,
1036 adapter->mr.vaddr, EHEA_MR_ACC_CTRL,
1037 adapter->pd, &pr->send_mr);
1038 if (hret != H_SUCCESS)
1039 goto out;
1040
1041 hret = ehea_h_register_smr(adapter->handle, adapter->mr.handle,
1042 adapter->mr.vaddr, EHEA_MR_ACC_CTRL,
1043 adapter->pd, &pr->recv_mr);
1044 if (hret != H_SUCCESS)
1045 goto out_freeres;
1046
1047 return 0;
1048
1049out_freeres:
1050 hret = ehea_h_free_resource(adapter->handle, pr->send_mr.handle);
1051 if (hret != H_SUCCESS)
1052 ehea_error("failed freeing SMR");
1053out:
1054 return -EIO;
1055}
1056
1057static int ehea_rem_smrs(struct ehea_port_res *pr)
1058{
1059 struct ehea_adapter *adapter = pr->port->adapter;
1060 int ret = 0;
1061 u64 hret;
1062
1063 hret = ehea_h_free_resource(adapter->handle, pr->send_mr.handle);
1064 if (hret != H_SUCCESS) {
1065 ret = -EIO;
1066 ehea_error("failed freeing send SMR for pr=%p", pr);
1067 }
1068
1069 hret = ehea_h_free_resource(adapter->handle, pr->recv_mr.handle);
1070 if (hret != H_SUCCESS) {
1071 ret = -EIO;
1072 ehea_error("failed freeing recv SMR for pr=%p", pr);
1073 }
1074
1075 return ret;
1076}
1077
1078static int ehea_init_q_skba(struct ehea_q_skb_arr *q_skba, int max_q_entries)
1079{
1080 int arr_size = sizeof(void*) * max_q_entries;
1081
1082 q_skba->arr = vmalloc(arr_size);
1083 if (!q_skba->arr)
1084 return -ENOMEM;
1085
1086 memset(q_skba->arr, 0, arr_size);
1087
1088 q_skba->len = max_q_entries;
1089 q_skba->index = 0;
1090 q_skba->os_skbs = 0;
1091
1092 return 0;
1093}
1094
1095static int ehea_init_port_res(struct ehea_port *port, struct ehea_port_res *pr,
1096 struct port_res_cfg *pr_cfg, int queue_token)
1097{
1098 struct ehea_adapter *adapter = port->adapter;
1099 enum ehea_eq_type eq_type = EHEA_EQ;
1100 struct ehea_qp_init_attr *init_attr = NULL;
1101 int ret = -EIO;
1102
1103 memset(pr, 0, sizeof(struct ehea_port_res));
1104
1105 pr->port = port;
1106 spin_lock_init(&pr->send_lock);
1107 spin_lock_init(&pr->recv_lock);
1108 spin_lock_init(&pr->xmit_lock);
1109 spin_lock_init(&pr->netif_queue);
1110
1111 pr->recv_eq = ehea_create_eq(adapter, eq_type, EHEA_MAX_ENTRIES_EQ, 0);
1112 if (!pr->recv_eq) {
1113 ehea_error("create_eq failed (recv_eq)");
1114 goto out_free;
1115 }
1116
1117 pr->send_eq = ehea_create_eq(adapter, eq_type, EHEA_MAX_ENTRIES_EQ, 0);
1118 if (!pr->send_eq) {
1119 ehea_error("create_eq failed (send_eq)");
1120 goto out_free;
1121 }
1122
1123 pr->recv_cq = ehea_create_cq(adapter, pr_cfg->max_entries_rcq,
1124 pr->recv_eq->fw_handle,
1125 port->logical_port_id);
1126 if (!pr->recv_cq) {
1127 ehea_error("create_cq failed (cq_recv)");
1128 goto out_free;
1129 }
1130
1131 pr->send_cq = ehea_create_cq(adapter, pr_cfg->max_entries_scq,
1132 pr->send_eq->fw_handle,
1133 port->logical_port_id);
1134 if (!pr->send_cq) {
1135 ehea_error("create_cq failed (cq_send)");
1136 goto out_free;
1137 }
1138
1139 if (netif_msg_ifup(port))
1140 ehea_info("Send CQ: act_nr_cqes=%d, Recv CQ: act_nr_cqes=%d",
1141 pr->send_cq->attr.act_nr_of_cqes,
1142 pr->recv_cq->attr.act_nr_of_cqes);
1143
1144 init_attr = kzalloc(sizeof(*init_attr), GFP_KERNEL);
1145 if (!init_attr) {
1146 ret = -ENOMEM;
1147 ehea_error("no mem for ehea_qp_init_attr");
1148 goto out_free;
1149 }
1150
1151 init_attr->low_lat_rq1 = 1;
1152 init_attr->signalingtype = 1; /* generate CQE if specified in WQE */
1153 init_attr->rq_count = 3;
1154 init_attr->qp_token = queue_token;
1155 init_attr->max_nr_send_wqes = pr_cfg->max_entries_sq;
1156 init_attr->max_nr_rwqes_rq1 = pr_cfg->max_entries_rq1;
1157 init_attr->max_nr_rwqes_rq2 = pr_cfg->max_entries_rq2;
1158 init_attr->max_nr_rwqes_rq3 = pr_cfg->max_entries_rq3;
1159 init_attr->wqe_size_enc_sq = EHEA_SG_SQ;
1160 init_attr->wqe_size_enc_rq1 = EHEA_SG_RQ1;
1161 init_attr->wqe_size_enc_rq2 = EHEA_SG_RQ2;
1162 init_attr->wqe_size_enc_rq3 = EHEA_SG_RQ3;
1163 init_attr->rq2_threshold = EHEA_RQ2_THRESHOLD;
1164 init_attr->rq3_threshold = EHEA_RQ3_THRESHOLD;
1165 init_attr->port_nr = port->logical_port_id;
1166 init_attr->send_cq_handle = pr->send_cq->fw_handle;
1167 init_attr->recv_cq_handle = pr->recv_cq->fw_handle;
1168 init_attr->aff_eq_handle = port->qp_eq->fw_handle;
1169
1170 pr->qp = ehea_create_qp(adapter, adapter->pd, init_attr);
1171 if (!pr->qp) {
1172 ehea_error("create_qp failed");
1173 ret = -EIO;
1174 goto out_free;
1175 }
1176
1177 if (netif_msg_ifup(port))
1178 ehea_info("QP: qp_nr=%d\n act_nr_snd_wqe=%d\n nr_rwqe_rq1=%d\n "
1179 "nr_rwqe_rq2=%d\n nr_rwqe_rq3=%d", init_attr->qp_nr,
1180 init_attr->act_nr_send_wqes,
1181 init_attr->act_nr_rwqes_rq1,
1182 init_attr->act_nr_rwqes_rq2,
1183 init_attr->act_nr_rwqes_rq3);
1184
1185 ret = ehea_init_q_skba(&pr->sq_skba, init_attr->act_nr_send_wqes + 1);
1186 ret |= ehea_init_q_skba(&pr->rq1_skba, init_attr->act_nr_rwqes_rq1 + 1);
1187 ret |= ehea_init_q_skba(&pr->rq2_skba, init_attr->act_nr_rwqes_rq2 + 1);
1188 ret |= ehea_init_q_skba(&pr->rq3_skba, init_attr->act_nr_rwqes_rq3 + 1);
1189 if (ret)
1190 goto out_free;
1191
1192 pr->swqe_refill_th = init_attr->act_nr_send_wqes / 10;
1193 if (ehea_gen_smrs(pr) != 0) {
1194 ret = -EIO;
1195 goto out_free;
1196 }
1197 tasklet_init(&pr->send_comp_task, ehea_send_irq_tasklet,
1198 (unsigned long)pr);
1199 atomic_set(&pr->swqe_avail, init_attr->act_nr_send_wqes - 1);
1200
1201 kfree(init_attr);
1202 ret = 0;
1203 goto out;
1204
1205out_free:
1206 kfree(init_attr);
1207 vfree(pr->sq_skba.arr);
1208 vfree(pr->rq1_skba.arr);
1209 vfree(pr->rq2_skba.arr);
1210 vfree(pr->rq3_skba.arr);
1211 ehea_destroy_qp(pr->qp);
1212 ehea_destroy_cq(pr->send_cq);
1213 ehea_destroy_cq(pr->recv_cq);
1214 ehea_destroy_eq(pr->send_eq);
1215 ehea_destroy_eq(pr->recv_eq);
1216out:
1217 return ret;
1218}
1219
1220static int ehea_clean_portres(struct ehea_port *port, struct ehea_port_res *pr)
1221{
1222 int ret, i;
1223
1224 ret = ehea_destroy_qp(pr->qp);
1225
1226 if (!ret) {
1227 ehea_destroy_cq(pr->send_cq);
1228 ehea_destroy_cq(pr->recv_cq);
1229 ehea_destroy_eq(pr->send_eq);
1230 ehea_destroy_eq(pr->recv_eq);
1231
1232 for (i = 0; i < pr->rq1_skba.len; i++)
1233 if (pr->rq1_skba.arr[i])
1234 dev_kfree_skb(pr->rq1_skba.arr[i]);
1235
1236 for (i = 0; i < pr->rq2_skba.len; i++)
1237 if (pr->rq2_skba.arr[i])
1238 dev_kfree_skb(pr->rq2_skba.arr[i]);
1239
1240 for (i = 0; i < pr->rq3_skba.len; i++)
1241 if (pr->rq3_skba.arr[i])
1242 dev_kfree_skb(pr->rq3_skba.arr[i]);
1243
1244 for (i = 0; i < pr->sq_skba.len; i++)
1245 if (pr->sq_skba.arr[i])
1246 dev_kfree_skb(pr->sq_skba.arr[i]);
1247
1248 vfree(pr->rq1_skba.arr);
1249 vfree(pr->rq2_skba.arr);
1250 vfree(pr->rq3_skba.arr);
1251 vfree(pr->sq_skba.arr);
1252 ret = ehea_rem_smrs(pr);
1253 }
1254 return ret;
1255}
1256
1257/*
1258 * The write_* functions store information in swqe which is used by
1259 * the hardware to calculate the ip/tcp/udp checksum
1260 */
1261
1262static inline void write_ip_start_end(struct ehea_swqe *swqe,
1263 const struct sk_buff *skb)
1264{
eddc9ec5 1265 swqe->ip_start = skb_network_offset(skb);
c9bdd4b5 1266 swqe->ip_end = (u8)(swqe->ip_start + ip_hdrlen(skb) - 1);
7a291083
JBT		 1267}
1268
1269static inline void write_tcp_offset_end(struct ehea_swqe *swqe,
1270 const struct sk_buff *skb)
1271{
1272 swqe->tcp_offset =
1273 (u8)(swqe->ip_end + 1 + offsetof(struct tcphdr, check));
1274
1275 swqe->tcp_end = (u16)skb->len - 1;
1276}
1277
1278static inline void write_udp_offset_end(struct ehea_swqe *swqe,
1279 const struct sk_buff *skb)
1280{
1281 swqe->tcp_offset =
1282 (u8)(swqe->ip_end + 1 + offsetof(struct udphdr, check));
1283
1284 swqe->tcp_end = (u16)skb->len - 1;
1285}
1286
1287
1288static void write_swqe2_TSO(struct sk_buff *skb,
1289 struct ehea_swqe *swqe, u32 lkey)
1290{
1291 struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry;
1292 u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0];
1293 int skb_data_size = skb->len - skb->data_len;
1294 int headersize;
1295 u64 tmp_addr;
1296
1297 /* Packet is TCP with TSO enabled */
1298 swqe->tx_control |= EHEA_SWQE_TSO;
1299 swqe->mss = skb_shinfo(skb)->gso_size;
1300 /* copy only eth/ip/tcp headers to immediate data and
1301 * the rest of skb->data to sg1entry
1302 */
ab6a5bb6 1303 headersize = ETH_HLEN + ip_hdrlen(skb) + tcp_hdrlen(skb);
7a291083
JBT		 1304
1305 skb_data_size = skb->len - skb->data_len;
1306
1307 if (skb_data_size >= headersize) {
1308 /* copy immediate data */
d626f62b 1309 skb_copy_from_linear_data(skb, imm_data, headersize);
7a291083
JBT		 1310 swqe->immediate_data_length = headersize;
1311
1312 if (skb_data_size > headersize) {
1313 /* set sg1entry data */
1314 sg1entry->l_key = lkey;
1315 sg1entry->len = skb_data_size - headersize;
1316
1317 tmp_addr = (u64)(skb->data + headersize);
1318 sg1entry->vaddr = tmp_addr;
1319 swqe->descriptors++;
1320 }
1321 } else
1322 ehea_error("cannot handle fragmented headers");
1323}
1324
1325static void write_swqe2_nonTSO(struct sk_buff *skb,
1326 struct ehea_swqe *swqe, u32 lkey)
1327{
1328 int skb_data_size = skb->len - skb->data_len;
1329 u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0];
1330 struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry;
1331 u64 tmp_addr;
1332
1333 /* Packet is any nonTSO type
1334 *
1335 * Copy as much as possible skb->data to immediate data and
1336 * the rest to sg1entry
1337 */
1338 if (skb_data_size >= SWQE2_MAX_IMM) {
1339 /* copy immediate data */
d626f62b 1340 skb_copy_from_linear_data(skb, imm_data, SWQE2_MAX_IMM);
7a291083
JBT		 1341
1342 swqe->immediate_data_length = SWQE2_MAX_IMM;
1343
1344 if (skb_data_size > SWQE2_MAX_IMM) {
1345 /* copy sg1entry data */
1346 sg1entry->l_key = lkey;
1347 sg1entry->len = skb_data_size - SWQE2_MAX_IMM;
1348 tmp_addr = (u64)(skb->data + SWQE2_MAX_IMM);
1349 sg1entry->vaddr = tmp_addr;
1350 swqe->descriptors++;
1351 }
1352 } else {
d626f62b 1353 skb_copy_from_linear_data(skb, imm_data, skb_data_size);
7a291083
JBT		 1354 swqe->immediate_data_length = skb_data_size;
1355 }
1356}
1357
1358static inline void write_swqe2_data(struct sk_buff *skb, struct net_device *dev,
1359 struct ehea_swqe *swqe, u32 lkey)
1360{
1361 struct ehea_vsgentry *sg_list, *sg1entry, *sgentry;
1362 skb_frag_t *frag;
1363 int nfrags, sg1entry_contains_frag_data, i;
1364 u64 tmp_addr;
1365
1366 nfrags = skb_shinfo(skb)->nr_frags;
1367 sg1entry = &swqe->u.immdata_desc.sg_entry;
1368 sg_list = (struct ehea_vsgentry*)&swqe->u.immdata_desc.sg_list;
1369 swqe->descriptors = 0;
1370 sg1entry_contains_frag_data = 0;
1371
1372 if ((dev->features & NETIF_F_TSO) && skb_shinfo(skb)->gso_size)
1373 write_swqe2_TSO(skb, swqe, lkey);
1374 else
1375 write_swqe2_nonTSO(skb, swqe, lkey);
1376
1377 /* write descriptors */
1378 if (nfrags > 0) {
1379 if (swqe->descriptors == 0) {
1380 /* sg1entry not yet used */
1381 frag = &skb_shinfo(skb)->frags[0];
1382
1383 /* copy sg1entry data */
1384 sg1entry->l_key = lkey;
1385 sg1entry->len = frag->size;
1386 tmp_addr = (u64)(page_address(frag->page)
1387 + frag->page_offset);
1388 sg1entry->vaddr = tmp_addr;
1389 swqe->descriptors++;
1390 sg1entry_contains_frag_data = 1;
1391 }
1392
1393 for (i = sg1entry_contains_frag_data; i < nfrags; i++) {
1394
1395 frag = &skb_shinfo(skb)->frags[i];
1396 sgentry = &sg_list[i - sg1entry_contains_frag_data];
1397
1398 sgentry->l_key = lkey;
1399 sgentry->len = frag->size;
1400
1401 tmp_addr = (u64)(page_address(frag->page)
1402 + frag->page_offset);
1403 sgentry->vaddr = tmp_addr;
1404 swqe->descriptors++;
1405 }
1406 }
1407}
1408
1409static int ehea_broadcast_reg_helper(struct ehea_port *port, u32 hcallid)
1410{
1411 int ret = 0;
1412 u64 hret;
1413 u8 reg_type;
1414
1415 /* De/Register untagged packets */
1416 reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_UNTAGGED;
1417 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1418 port->logical_port_id,
1419 reg_type, port->mac_addr, 0, hcallid);
1420 if (hret != H_SUCCESS) {
1421 ehea_error("reg_dereg_bcmc failed (tagged)");
1422 ret = -EIO;
1423 goto out_herr;
1424 }
1425
1426 /* De/Register VLAN packets */
1427 reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_VLANID_ALL;
1428 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1429 port->logical_port_id,
1430 reg_type, port->mac_addr, 0, hcallid);
1431 if (hret != H_SUCCESS) {
1432 ehea_error("reg_dereg_bcmc failed (vlan)");
1433 ret = -EIO;
1434 }
1435out_herr:
1436 return ret;
1437}
1438
1439static int ehea_set_mac_addr(struct net_device *dev, void *sa)
1440{
1441 struct ehea_port *port = netdev_priv(dev);
1442 struct sockaddr *mac_addr = sa;
1443 struct hcp_ehea_port_cb0 *cb0;
1444 int ret;
1445 u64 hret;
1446
1447 if (!is_valid_ether_addr(mac_addr->sa_data)) {
1448 ret = -EADDRNOTAVAIL;
1449 goto out;
1450 }
1451
a1d261c5 1452 cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL);
7a291083
JBT		 1453 if (!cb0) {
1454 ehea_error("no mem for cb0");
1455 ret = -ENOMEM;
1456 goto out;
1457 }
1458
1459 memcpy(&(cb0->port_mac_addr), &(mac_addr->sa_data[0]), ETH_ALEN);
1460
1461 cb0->port_mac_addr = cb0->port_mac_addr >> 16;
1462
1463 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1464 port->logical_port_id, H_PORT_CB0,
1465 EHEA_BMASK_SET(H_PORT_CB0_MAC, 1), cb0);
1466 if (hret != H_SUCCESS) {
1467 ret = -EIO;
1468 goto out_free;
1469 }
1470
1471 memcpy(dev->dev_addr, mac_addr->sa_data, dev->addr_len);
1472
1473 /* Deregister old MAC in pHYP */
1474 ret = ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
1475 if (ret)
1476 goto out_free;
1477
1478 port->mac_addr = cb0->port_mac_addr << 16;
1479
1480 /* Register new MAC in pHYP */
1481 ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
1482 if (ret)
1483 goto out_free;
1484
1485 ret = 0;
1486out_free:
1487 kfree(cb0);
1488out:
1489 return ret;
1490}
1491
1492static void ehea_promiscuous_error(u64 hret, int enable)
1493{
7674a588
TK		 1494 if (hret == H_AUTHORITY)
1495 ehea_info("Hypervisor denied %sabling promiscuous mode",
1496 enable == 1 ? "en" : "dis");
1497 else
1498 ehea_error("failed %sabling promiscuous mode",
1499 enable == 1 ? "en" : "dis");
7a291083
JBT		 1500}
1501
1502static void ehea_promiscuous(struct net_device *dev, int enable)
1503{
1504 struct ehea_port *port = netdev_priv(dev);
1505 struct hcp_ehea_port_cb7 *cb7;
1506 u64 hret;
1507
1508 if ((enable && port->promisc) || (!enable && !port->promisc))
1509 return;
1510
a1d261c5 1511 cb7 = kzalloc(PAGE_SIZE, GFP_ATOMIC);
7a291083
JBT		 1512 if (!cb7) {
1513 ehea_error("no mem for cb7");
1514 goto out;
1515 }
1516
1517 /* Modify Pxs_DUCQPN in CB7 */
1518 cb7->def_uc_qpn = enable == 1 ? port->port_res[0].qp->fw_handle : 0;
1519
1520 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1521 port->logical_port_id,
1522 H_PORT_CB7, H_PORT_CB7_DUCQPN, cb7);
1523 if (hret) {
1524 ehea_promiscuous_error(hret, enable);
1525 goto out;
1526 }
1527
1528 port->promisc = enable;
1529out:
1530 kfree(cb7);
1531 return;
1532}
1533
1534static u64 ehea_multicast_reg_helper(struct ehea_port *port, u64 mc_mac_addr,
1535 u32 hcallid)
1536{
1537 u64 hret;
1538 u8 reg_type;
1539
1540 reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST
1541 | EHEA_BCMC_UNTAGGED;
1542
1543 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1544 port->logical_port_id,
1545 reg_type, mc_mac_addr, 0, hcallid);
1546 if (hret)
1547 goto out;
1548
1549 reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST
1550 | EHEA_BCMC_VLANID_ALL;
1551
1552 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1553 port->logical_port_id,
1554 reg_type, mc_mac_addr, 0, hcallid);
1555out:
1556 return hret;
1557}
1558
1559static int ehea_drop_multicast_list(struct net_device *dev)
1560{
1561 struct ehea_port *port = netdev_priv(dev);
1562 struct ehea_mc_list *mc_entry = port->mc_list;
1563 struct list_head *pos;
1564 struct list_head *temp;
1565 int ret = 0;
1566 u64 hret;
1567
1568 list_for_each_safe(pos, temp, &(port->mc_list->list)) {
1569 mc_entry = list_entry(pos, struct ehea_mc_list, list);
1570
1571 hret = ehea_multicast_reg_helper(port, mc_entry->macaddr,
1572 H_DEREG_BCMC);
1573 if (hret) {
1574 ehea_error("failed deregistering mcast MAC");
1575 ret = -EIO;
1576 }
1577
1578 list_del(pos);
1579 kfree(mc_entry);
1580 }
1581 return ret;
1582}
1583
1584static void ehea_allmulti(struct net_device *dev, int enable)
1585{
1586 struct ehea_port *port = netdev_priv(dev);
1587 u64 hret;
1588
1589 if (!port->allmulti) {
1590 if (enable) {
1591 /* Enable ALLMULTI */
1592 ehea_drop_multicast_list(dev);
1593 hret = ehea_multicast_reg_helper(port, 0, H_REG_BCMC);
1594 if (!hret)
1595 port->allmulti = 1;
1596 else
1597 ehea_error("failed enabling IFF_ALLMULTI");
1598 }
1599 } else
1600 if (!enable) {
1601 /* Disable ALLMULTI */
1602 hret = ehea_multicast_reg_helper(port, 0, H_DEREG_BCMC);
1603 if (!hret)
1604 port->allmulti = 0;
1605 else
1606 ehea_error("failed disabling IFF_ALLMULTI");
1607 }
1608}
1609
1610static void ehea_add_multicast_entry(struct ehea_port* port, u8* mc_mac_addr)
1611{
1612 struct ehea_mc_list *ehea_mcl_entry;
1613 u64 hret;
1614
1e1675cc 1615 ehea_mcl_entry = kzalloc(sizeof(*ehea_mcl_entry), GFP_ATOMIC);
7a291083
JBT		 1616 if (!ehea_mcl_entry) {
1617 ehea_error("no mem for mcl_entry");
1618 return;
1619 }
1620
1621 INIT_LIST_HEAD(&ehea_mcl_entry->list);
1622
1623 memcpy(&ehea_mcl_entry->macaddr, mc_mac_addr, ETH_ALEN);
1624
1625 hret = ehea_multicast_reg_helper(port, ehea_mcl_entry->macaddr,
1626 H_REG_BCMC);
1627 if (!hret)
1628 list_add(&ehea_mcl_entry->list, &port->mc_list->list);
1629 else {
1630 ehea_error("failed registering mcast MAC");
1631 kfree(ehea_mcl_entry);
1632 }
1633}
1634
1635static void ehea_set_multicast_list(struct net_device *dev)
1636{
1637 struct ehea_port *port = netdev_priv(dev);
1638 struct dev_mc_list *k_mcl_entry;
1639 int ret, i;
1640
1641 if (dev->flags & IFF_PROMISC) {
1642 ehea_promiscuous(dev, 1);
1643 return;
1644 }
1645 ehea_promiscuous(dev, 0);
1646
1647 if (dev->flags & IFF_ALLMULTI) {
1648 ehea_allmulti(dev, 1);
1649 return;
1650 }
1651 ehea_allmulti(dev, 0);
1652
1653 if (dev->mc_count) {
1654 ret = ehea_drop_multicast_list(dev);
1655 if (ret) {
1656 /* Dropping the current multicast list failed.
1657 * Enabling ALL_MULTI is the best we can do.
1658 */
1659 ehea_allmulti(dev, 1);
1660 }
1661
1662 if (dev->mc_count > port->adapter->max_mc_mac) {
1663 ehea_info("Mcast registration limit reached (0x%lx). "
1664 "Use ALLMULTI!",
1665 port->adapter->max_mc_mac);
1666 goto out;
1667 }
1668
1669 for (i = 0, k_mcl_entry = dev->mc_list;
1670 i < dev->mc_count;
1671 i++, k_mcl_entry = k_mcl_entry->next) {
1672 ehea_add_multicast_entry(port, k_mcl_entry->dmi_addr);
1673 }
1674 }
1675out:
1676 return;
1677}
1678
1679static int ehea_change_mtu(struct net_device *dev, int new_mtu)
1680{
1681 if ((new_mtu < 68) || (new_mtu > EHEA_MAX_PACKET_SIZE))
1682 return -EINVAL;
1683 dev->mtu = new_mtu;
1684 return 0;
1685}
1686
1687static void ehea_xmit2(struct sk_buff *skb, struct net_device *dev,
1688 struct ehea_swqe *swqe, u32 lkey)
1689{
1690 if (skb->protocol == htons(ETH_P_IP)) {
eddc9ec5 1691 const struct iphdr *iph = ip_hdr(skb);
7a291083
JBT		 1692 /* IPv4 */
1693 swqe->tx_control |= EHEA_SWQE_CRC
1694 | EHEA_SWQE_IP_CHECKSUM
1695 | EHEA_SWQE_TCP_CHECKSUM
1696 | EHEA_SWQE_IMM_DATA_PRESENT
1697 | EHEA_SWQE_DESCRIPTORS_PRESENT;
1698
1699 write_ip_start_end(swqe, skb);
1700
eddc9ec5
ACM		 1701 if (iph->protocol == IPPROTO_UDP) {
1702 if ((iph->frag_off & IP_MF) ||
1703 (iph->frag_off & IP_OFFSET))
7a291083
JBT		 1704 /* IP fragment, so don't change cs */
1705 swqe->tx_control &= ~EHEA_SWQE_TCP_CHECKSUM;
1706 else
1707 write_udp_offset_end(swqe, skb);
1708
eddc9ec5 1709 } else if (iph->protocol == IPPROTO_TCP) {
7a291083
JBT		 1710 write_tcp_offset_end(swqe, skb);
1711 }
1712
1713 /* icmp (big data) and ip segmentation packets (all other ip
1714 packets) do not require any special handling */
1715
1716 } else {
1717 /* Other Ethernet Protocol */
1718 swqe->tx_control |= EHEA_SWQE_CRC
1719 | EHEA_SWQE_IMM_DATA_PRESENT
1720 | EHEA_SWQE_DESCRIPTORS_PRESENT;
1721 }
1722
1723 write_swqe2_data(skb, dev, swqe, lkey);
1724}
1725
1726static void ehea_xmit3(struct sk_buff *skb, struct net_device *dev,
1727 struct ehea_swqe *swqe)
1728{
1729 int nfrags = skb_shinfo(skb)->nr_frags;
1730 u8 *imm_data = &swqe->u.immdata_nodesc.immediate_data[0];
1731 skb_frag_t *frag;
1732 int i;
1733
1734 if (skb->protocol == htons(ETH_P_IP)) {
eddc9ec5 1735 const struct iphdr *iph = ip_hdr(skb);
7a291083
JBT		 1736 /* IPv4 */
1737 write_ip_start_end(swqe, skb);
1738
eddc9ec5 1739 if (iph->protocol == IPPROTO_TCP) {
7a291083
JBT		 1740 swqe->tx_control |= EHEA_SWQE_CRC
1741 | EHEA_SWQE_IP_CHECKSUM
1742 | EHEA_SWQE_TCP_CHECKSUM
1743 | EHEA_SWQE_IMM_DATA_PRESENT;
1744
1745 write_tcp_offset_end(swqe, skb);
1746
eddc9ec5
ACM		 1747 } else if (iph->protocol == IPPROTO_UDP) {
1748 if ((iph->frag_off & IP_MF) ||
1749 (iph->frag_off & IP_OFFSET))
7a291083
JBT		 1750 /* IP fragment, so don't change cs */
1751 swqe->tx_control |= EHEA_SWQE_CRC
1752 | EHEA_SWQE_IMM_DATA_PRESENT;
1753 else {
1754 swqe->tx_control |= EHEA_SWQE_CRC
1755 | EHEA_SWQE_IP_CHECKSUM
1756 | EHEA_SWQE_TCP_CHECKSUM
1757 | EHEA_SWQE_IMM_DATA_PRESENT;
1758
1759 write_udp_offset_end(swqe, skb);
1760 }
1761 } else {
1762 /* icmp (big data) and
1763 ip segmentation packets (all other ip packets) */
1764 swqe->tx_control |= EHEA_SWQE_CRC
1765 | EHEA_SWQE_IP_CHECKSUM
1766 | EHEA_SWQE_IMM_DATA_PRESENT;
1767 }
1768 } else {
1769 /* Other Ethernet Protocol */
1770 swqe->tx_control |= EHEA_SWQE_CRC | EHEA_SWQE_IMM_DATA_PRESENT;
1771 }
1772 /* copy (immediate) data */
1773 if (nfrags == 0) {
1774 /* data is in a single piece */
d626f62b 1775 skb_copy_from_linear_data(skb, imm_data, skb->len);
7a291083
JBT		 1776 } else {
1777 /* first copy data from the skb->data buffer ... */
d626f62b
ACM		 1778 skb_copy_from_linear_data(skb, imm_data,
1779 skb->len - skb->data_len);
7a291083
JBT		 1780 imm_data += skb->len - skb->data_len;
1781
1782 /* ... then copy data from the fragments */
1783 for (i = 0; i < nfrags; i++) {
1784 frag = &skb_shinfo(skb)->frags[i];
1785 memcpy(imm_data,
1786 page_address(frag->page) + frag->page_offset,
1787 frag->size);
1788 imm_data += frag->size;
1789 }
1790 }
1791 swqe->immediate_data_length = skb->len;
1792 dev_kfree_skb(skb);
1793}
1794
1795static int ehea_start_xmit(struct sk_buff *skb, struct net_device *dev)
1796{
1797 struct ehea_port *port = netdev_priv(dev);
1798 struct ehea_swqe *swqe;
1799 unsigned long flags;
1800 u32 lkey;
1801 int swqe_index;
1802 struct ehea_port_res *pr = &port->port_res[0];
1803
1804 spin_lock(&pr->xmit_lock);
1805
1806 swqe = ehea_get_swqe(pr->qp, &swqe_index);
1807 memset(swqe, 0, SWQE_HEADER_SIZE);
1808 atomic_dec(&pr->swqe_avail);
1809
1810 if (skb->len <= SWQE3_MAX_IMM) {
1811 u32 sig_iv = port->sig_comp_iv;
1812 u32 swqe_num = pr->swqe_id_counter;
1813 ehea_xmit3(skb, dev, swqe);
1814 swqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE3_TYPE)
1815 | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, swqe_num);
1816 if (pr->swqe_ll_count >= (sig_iv - 1)) {
1817 swqe->wr_id |= EHEA_BMASK_SET(EHEA_WR_ID_REFILL,
1818 sig_iv);
1819 swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
1820 pr->swqe_ll_count = 0;
1821 } else
1822 pr->swqe_ll_count += 1;
1823 } else {
1824 swqe->wr_id =
1825 EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE2_TYPE)
1826 | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, pr->swqe_id_counter)
1827 | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, pr->sq_skba.index);
1828 pr->sq_skba.arr[pr->sq_skba.index] = skb;
1829
1830 pr->sq_skba.index++;
1831 pr->sq_skba.index &= (pr->sq_skba.len - 1);
1832
1833 lkey = pr->send_mr.lkey;
1834 ehea_xmit2(skb, dev, swqe, lkey);
1835
1836 if (pr->swqe_count >= (EHEA_SIG_IV_LONG - 1)) {
1837 swqe->wr_id |= EHEA_BMASK_SET(EHEA_WR_ID_REFILL,
1838 EHEA_SIG_IV_LONG);
1839 swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
1840 pr->swqe_count = 0;
1841 } else
1842 pr->swqe_count += 1;
1843 }
1844 pr->swqe_id_counter += 1;
1845
1846 if (port->vgrp && vlan_tx_tag_present(skb)) {
1847 swqe->tx_control |= EHEA_SWQE_VLAN_INSERT;
1848 swqe->vlan_tag = vlan_tx_tag_get(skb);
1849 }
1850
1851 if (netif_msg_tx_queued(port)) {
1852 ehea_info("post swqe on QP %d", pr->qp->init_attr.qp_nr);
bff0a55f 1853 ehea_dump(swqe, 512, "swqe");
7a291083
JBT		 1854 }
1855
1856 ehea_post_swqe(pr->qp, swqe);
1857 pr->tx_packets++;
1858
1859 if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) {
1860 spin_lock_irqsave(&pr->netif_queue, flags);
1861 if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) {
1862 netif_stop_queue(dev);
1863 pr->queue_stopped = 1;
1864 }
1865 spin_unlock_irqrestore(&pr->netif_queue, flags);
1866 }
1867 dev->trans_start = jiffies;
1868 spin_unlock(&pr->xmit_lock);
1869
1870 return NETDEV_TX_OK;
1871}
1872
1873static void ehea_vlan_rx_register(struct net_device *dev,
1874 struct vlan_group *grp)
1875{
1876 struct ehea_port *port = netdev_priv(dev);
1877 struct ehea_adapter *adapter = port->adapter;
1878 struct hcp_ehea_port_cb1 *cb1;
1879 u64 hret;
1880
1881 port->vgrp = grp;
1882
a1d261c5 1883 cb1 = kzalloc(PAGE_SIZE, GFP_KERNEL);
7a291083
JBT		 1884 if (!cb1) {
1885 ehea_error("no mem for cb1");
1886 goto out;
1887 }
1888
1889 if (grp)
1890 memset(cb1->vlan_filter, 0, sizeof(cb1->vlan_filter));
1891 else
1892 memset(cb1->vlan_filter, 0xFF, sizeof(cb1->vlan_filter));
1893
1894 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
1895 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
1896 if (hret != H_SUCCESS)
1897 ehea_error("modify_ehea_port failed");
1898
1899 kfree(cb1);
1900out:
1901 return;
1902}
1903
1904static void ehea_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
1905{
1906 struct ehea_port *port = netdev_priv(dev);
1907 struct ehea_adapter *adapter = port->adapter;
1908 struct hcp_ehea_port_cb1 *cb1;
1909 int index;
1910 u64 hret;
1911
a1d261c5 1912 cb1 = kzalloc(PAGE_SIZE, GFP_KERNEL);
7a291083
JBT		 1913 if (!cb1) {
1914 ehea_error("no mem for cb1");
1915 goto out;
1916 }
1917
1918 hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
1919 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
1920 if (hret != H_SUCCESS) {
1921 ehea_error("query_ehea_port failed");
1922 goto out;
1923 }
1924
1925 index = (vid / 64);
1926 cb1->vlan_filter[index] |= ((u64)(1 << (vid & 0x3F)));
1927
1928 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
1929 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
1930 if (hret != H_SUCCESS)
1931 ehea_error("modify_ehea_port failed");
1932out:
1933 kfree(cb1);
1934 return;
1935}
1936
1937static void ehea_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
1938{
1939 struct ehea_port *port = netdev_priv(dev);
1940 struct ehea_adapter *adapter = port->adapter;
1941 struct hcp_ehea_port_cb1 *cb1;
1942 int index;
1943 u64 hret;
1944
5c15bdec 1945 vlan_group_set_device(port->vgrp, vid, NULL);
7a291083 1946
a1d261c5 1947 cb1 = kzalloc(PAGE_SIZE, GFP_KERNEL);
7a291083
JBT		 1948 if (!cb1) {
1949 ehea_error("no mem for cb1");
1950 goto out;
1951 }
1952
1953 hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
1954 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
1955 if (hret != H_SUCCESS) {
1956 ehea_error("query_ehea_port failed");
1957 goto out;
1958 }
1959
1960 index = (vid / 64);
1961 cb1->vlan_filter[index] &= ~((u64)(1 << (vid & 0x3F)));
1962
1963 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
1964 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
1965 if (hret != H_SUCCESS)
1966 ehea_error("modify_ehea_port failed");
1967out:
1968 kfree(cb1);
1969 return;
1970}
1971
1972int ehea_activate_qp(struct ehea_adapter *adapter, struct ehea_qp *qp)
1973{
1974 int ret = -EIO;
1975 u64 hret;
1976 u16 dummy16 = 0;
1977 u64 dummy64 = 0;
1978 struct hcp_modify_qp_cb0* cb0;
1979
a1d261c5 1980 cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL);
7a291083
JBT		 1981 if (!cb0) {
1982 ret = -ENOMEM;
1983 goto out;
1984 }
1985
1986 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
1987 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
1988 if (hret != H_SUCCESS) {
1989 ehea_error("query_ehea_qp failed (1)");
1990 goto out;
1991 }
1992
1993 cb0->qp_ctl_reg = H_QP_CR_STATE_INITIALIZED;
1994 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
1995 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
1996 &dummy64, &dummy64, &dummy16, &dummy16);
1997 if (hret != H_SUCCESS) {
1998 ehea_error("modify_ehea_qp failed (1)");
1999 goto out;
2000 }
2001
2002 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2003 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2004 if (hret != H_SUCCESS) {
2005 ehea_error("query_ehea_qp failed (2)");
2006 goto out;
2007 }
2008
2009 cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_INITIALIZED;
2010 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2011 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2012 &dummy64, &dummy64, &dummy16, &dummy16);
2013 if (hret != H_SUCCESS) {
2014 ehea_error("modify_ehea_qp failed (2)");
2015 goto out;
2016 }
2017
2018 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2019 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2020 if (hret != H_SUCCESS) {
2021 ehea_error("query_ehea_qp failed (3)");
2022 goto out;
2023 }
2024
2025 cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_RDY2SND;
2026 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2027 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2028 &dummy64, &dummy64, &dummy16, &dummy16);
2029 if (hret != H_SUCCESS) {
2030 ehea_error("modify_ehea_qp failed (3)");
2031 goto out;
2032 }
2033
2034 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2035 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2036 if (hret != H_SUCCESS) {
2037 ehea_error("query_ehea_qp failed (4)");
2038 goto out;
2039 }
2040
2041 ret = 0;
2042out:
2043 kfree(cb0);
2044 return ret;
2045}
2046
2047static int ehea_port_res_setup(struct ehea_port *port, int def_qps,
2048 int add_tx_qps)
2049{
2050 int ret, i;
2051 struct port_res_cfg pr_cfg, pr_cfg_small_rx;
2052 enum ehea_eq_type eq_type = EHEA_EQ;
2053
2054 port->qp_eq = ehea_create_eq(port->adapter, eq_type,
2055 EHEA_MAX_ENTRIES_EQ, 1);
2056 if (!port->qp_eq) {
2057 ret = -EINVAL;
2058 ehea_error("ehea_create_eq failed (qp_eq)");
2059 goto out_kill_eq;
2060 }
2061
2062 pr_cfg.max_entries_rcq = rq1_entries + rq2_entries + rq3_entries;
2063 pr_cfg.max_entries_scq = sq_entries;
2064 pr_cfg.max_entries_sq = sq_entries;
2065 pr_cfg.max_entries_rq1 = rq1_entries;
2066 pr_cfg.max_entries_rq2 = rq2_entries;
2067 pr_cfg.max_entries_rq3 = rq3_entries;
2068
2069 pr_cfg_small_rx.max_entries_rcq = 1;
2070 pr_cfg_small_rx.max_entries_scq = sq_entries;
2071 pr_cfg_small_rx.max_entries_sq = sq_entries;
2072 pr_cfg_small_rx.max_entries_rq1 = 1;
2073 pr_cfg_small_rx.max_entries_rq2 = 1;
2074 pr_cfg_small_rx.max_entries_rq3 = 1;
2075
2076 for (i = 0; i < def_qps; i++) {
2077 ret = ehea_init_port_res(port, &port->port_res[i], &pr_cfg, i);
2078 if (ret)
2079 goto out_clean_pr;
2080 }
2081 for (i = def_qps; i < def_qps + add_tx_qps; i++) {
2082 ret = ehea_init_port_res(port, &port->port_res[i],
2083 &pr_cfg_small_rx, i);
2084 if (ret)
2085 goto out_clean_pr;
2086 }
2087
2088 return 0;
2089
2090out_clean_pr:
2091 while (--i >= 0)
2092 ehea_clean_portres(port, &port->port_res[i]);
2093
2094out_kill_eq:
2095 ehea_destroy_eq(port->qp_eq);
2096 return ret;
2097}
2098
2099static int ehea_clean_all_portres(struct ehea_port *port)
2100{
2101 int ret = 0;
2102 int i;
2103
2104 for(i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
2105 ret |= ehea_clean_portres(port, &port->port_res[i]);
2106
2107 ret |= ehea_destroy_eq(port->qp_eq);
2108
2109 return ret;
2110}
2111
2112static int ehea_up(struct net_device *dev)
2113{
2114 int ret, i;
2115 struct ehea_port *port = netdev_priv(dev);
2116 u64 mac_addr = 0;
2117
2118 if (port->state == EHEA_PORT_UP)
2119 return 0;
2120
2121 ret = ehea_port_res_setup(port, port->num_def_qps,
2122 port->num_add_tx_qps);
2123 if (ret) {
2124 ehea_error("port_res_failed");
2125 goto out;
2126 }
2127
2128 /* Set default QP for this port */
2129 ret = ehea_configure_port(port);
2130 if (ret) {
2131 ehea_error("ehea_configure_port failed. ret:%d", ret);
2132 goto out_clean_pr;
2133 }
2134
2135 ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
2136 if (ret) {
2137 ret = -EIO;
2138 ehea_error("out_clean_pr");
2139 goto out_clean_pr;
2140 }
2141 mac_addr = (*(u64*)dev->dev_addr) >> 16;
2142
2143 ret = ehea_reg_interrupts(dev);
2144 if (ret) {
2145 ehea_error("out_dereg_bc");
2146 goto out_dereg_bc;
2147 }
2148
2149 for(i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
2150 ret = ehea_activate_qp(port->adapter, port->port_res[i].qp);
2151 if (ret) {
2152 ehea_error("activate_qp failed");
2153 goto out_free_irqs;
2154 }
2155 }
2156
2157 for(i = 0; i < port->num_def_qps; i++) {
2158 ret = ehea_fill_port_res(&port->port_res[i]);
2159 if (ret) {
2160 ehea_error("out_free_irqs");
2161 goto out_free_irqs;
2162 }
2163 }
2164
2165 ret = 0;
2166 port->state = EHEA_PORT_UP;
2167 goto out;
2168
2169out_free_irqs:
2170 ehea_free_interrupts(dev);
2171
2172out_dereg_bc:
2173 ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
2174
2175out_clean_pr:
2176 ehea_clean_all_portres(port);
2177out:
2178 return ret;
2179}
2180
2181static int ehea_open(struct net_device *dev)
2182{
2183 int ret;
2184 struct ehea_port *port = netdev_priv(dev);
2185
2186 down(&port->port_lock);
2187
2188 if (netif_msg_ifup(port))
2189 ehea_info("enabling port %s", dev->name);
2190
2191 ret = ehea_up(dev);
2192 if (!ret)
2193 netif_start_queue(dev);
2194
2195 up(&port->port_lock);
2196
2197 return ret;
2198}
2199
2200static int ehea_down(struct net_device *dev)
2201{
2202 int ret, i;
2203 struct ehea_port *port = netdev_priv(dev);
2204
2205 if (port->state == EHEA_PORT_DOWN)
2206 return 0;
2207
2208 ehea_drop_multicast_list(dev);
2209 ehea_free_interrupts(dev);
2210
2211 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
2212 tasklet_kill(&port->port_res[i].send_comp_task);
2213
2214 ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
2215 ret = ehea_clean_all_portres(port);
2216 port->state = EHEA_PORT_DOWN;
2217 return ret;
2218}
2219
2220static int ehea_stop(struct net_device *dev)
2221{
2222 int ret;
2223 struct ehea_port *port = netdev_priv(dev);
2224
2225 if (netif_msg_ifdown(port))
2226 ehea_info("disabling port %s", dev->name);
2227
2228 flush_workqueue(port->adapter->ehea_wq);
2229 down(&port->port_lock);
2230 netif_stop_queue(dev);
2231 ret = ehea_down(dev);
2232 up(&port->port_lock);
2233 return ret;
2234}
2235
c4028958 2236static void ehea_reset_port(struct work_struct *work)
7a291083
JBT		 2237{
2238 int ret;
c4028958
DH		 2239 struct ehea_port *port =
2240 container_of(work, struct ehea_port, reset_task);
2241 struct net_device *dev = port->netdev;
7a291083
JBT		 2242
2243 port->resets++;
2244 down(&port->port_lock);
2245 netif_stop_queue(dev);
2246 netif_poll_disable(dev);
2247
2248 ret = ehea_down(dev);
2249 if (ret)
2250 ehea_error("ehea_down failed. not all resources are freed");
2251
2252 ret = ehea_up(dev);
2253 if (ret) {
2254 ehea_error("Reset device %s failed: ret=%d", dev->name, ret);
2255 goto out;
2256 }
2257
2258 if (netif_msg_timer(port))
2259 ehea_info("Device %s resetted successfully", dev->name);
2260
2261 netif_poll_enable(dev);
2262 netif_wake_queue(dev);
2263out:
2264 up(&port->port_lock);
2265 return;
2266}
2267
2268static void ehea_tx_watchdog(struct net_device *dev)
2269{
2270 struct ehea_port *port = netdev_priv(dev);
2271
2272 if (netif_carrier_ok(dev))
2273 queue_work(port->adapter->ehea_wq, &port->reset_task);
2274}
2275
2276int ehea_sense_adapter_attr(struct ehea_adapter *adapter)
2277{
2278 struct hcp_query_ehea *cb;
2279 u64 hret;
2280 int ret;
2281
a1d261c5 2282 cb = kzalloc(PAGE_SIZE, GFP_KERNEL);
7a291083
JBT		 2283 if (!cb) {
2284 ret = -ENOMEM;
2285 goto out;
2286 }
2287
2288 hret = ehea_h_query_ehea(adapter->handle, cb);
2289
2290 if (hret != H_SUCCESS) {
2291 ret = -EIO;
2292 goto out_herr;
2293 }
2294
7a291083
JBT		 2295 adapter->max_mc_mac = cb->max_mc_mac - 1;
2296 ret = 0;
2297
2298out_herr:
2299 kfree(cb);
2300out:
2301 return ret;
2302}
2303
1acf2318 2304int ehea_get_jumboframe_status(struct ehea_port *port, int *jumbo)
7a291083 2305{
7a291083 2306 struct hcp_ehea_port_cb4 *cb4;
1acf2318
JBT		 2307 u64 hret;
2308 int ret = 0;
7a291083 2309
1acf2318 2310 *jumbo = 0;
7a291083 2311
1acf2318 2312 /* (Try to) enable *jumbo frames */
a1d261c5 2313 cb4 = kzalloc(PAGE_SIZE, GFP_KERNEL);
7a291083
JBT		 2314 if (!cb4) {
2315 ehea_error("no mem for cb4");
1acf2318
JBT		 2316 ret = -ENOMEM;
2317 goto out;
7a291083 2318 } else {
1acf2318 2319 hret = ehea_h_query_ehea_port(port->adapter->handle,
9c750b7d
TK		 2320 port->logical_port_id,
2321 H_PORT_CB4,
2322 H_PORT_CB4_JUMBO, cb4);
9c750b7d
TK		 2323 if (hret == H_SUCCESS) {
2324 if (cb4->jumbo_frame)
1acf2318 2325 *jumbo = 1;
9c750b7d
TK		 2326 else {
2327 cb4->jumbo_frame = 1;
1acf2318
JBT		 2328 hret = ehea_h_modify_ehea_port(port->adapter->
2329 handle,
9c750b7d 2330 port->
1acf2318 2331 logical_port_id,
9c750b7d
TK		 2332 H_PORT_CB4,
2333 H_PORT_CB4_JUMBO,
2334 cb4);
2335 if (hret == H_SUCCESS)
1acf2318 2336 *jumbo = 1;
9c750b7d 2337 }
1acf2318
JBT		 2338 } else
2339 ret = -EINVAL;
2340
7a291083
JBT		 2341 kfree(cb4);
2342 }
1acf2318
JBT		 2343out:
2344 return ret;
2345}
2346
2347static ssize_t ehea_show_port_id(struct device *dev,
2348 struct device_attribute *attr, char *buf)
2349{
2350 struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev);
2351 return sprintf(buf, "0x%X", port->logical_port_id);
2352}
2353
2354static DEVICE_ATTR(log_port_id, S_IRUSR | S_IRGRP | S_IROTH, ehea_show_port_id,
2355 NULL);
2356
2357static void __devinit logical_port_release(struct device *dev)
2358{
2359 struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev);
2360 of_node_put(port->ofdev.node);
2361}
2362
2363static struct device *ehea_register_port(struct ehea_port *port,
2364 struct device_node *dn)
2365{
2366 int ret;
2367
2368 port->ofdev.node = of_node_get(dn);
2369 port->ofdev.dev.parent = &port->adapter->ebus_dev->ofdev.dev;
2370
2371 sprintf(port->ofdev.dev.bus_id, "port%d", port->logical_port_id);
2372 port->ofdev.dev.release = logical_port_release;
2373
2374 ret = of_device_register(&port->ofdev);
2375 if (ret) {
2376 ehea_error("failed to register device. ret=%d", ret);
2377 goto out;
2378 }
2379
2380 ret = device_create_file(&port->ofdev.dev, &dev_attr_log_port_id);
2381 if (ret) {
2382 ehea_error("failed to register attributes, ret=%d", ret);
2383 goto out_unreg_of_dev;
2384 }
2385
2386 return &port->ofdev.dev;
2387
2388out_unreg_of_dev:
2389 of_device_unregister(&port->ofdev);
2390out:
2391 return NULL;
2392}
2393
2394static void ehea_unregister_port(struct ehea_port *port)
2395{
2396 device_remove_file(&port->ofdev.dev, &dev_attr_log_port_id);
2397 of_device_unregister(&port->ofdev);
2398}
2399
2400struct ehea_port *ehea_setup_single_port(struct ehea_adapter *adapter,
2401 u32 logical_port_id,
2402 struct device_node *dn)
2403{
2404 int ret;
2405 struct net_device *dev;
2406 struct ehea_port *port;
2407 struct device *port_dev;
2408 int jumbo;
2409
2410 /* allocate memory for the port structures */
2411 dev = alloc_etherdev(sizeof(struct ehea_port));
2412
2413 if (!dev) {
2414 ehea_error("no mem for net_device");
2415 ret = -ENOMEM;
2416 goto out_err;
2417 }
2418
2419 port = netdev_priv(dev);
2420
2421 sema_init(&port->port_lock, 1);
2422 port->state = EHEA_PORT_DOWN;
2423 port->sig_comp_iv = sq_entries / 10;
2424
2425 port->adapter = adapter;
2426 port->netdev = dev;
2427 port->logical_port_id = logical_port_id;
2428
2429 port->msg_enable = netif_msg_init(msg_level, EHEA_MSG_DEFAULT);
2430
2431 port->mc_list = kzalloc(sizeof(struct ehea_mc_list), GFP_KERNEL);
2432 if (!port->mc_list) {
2433 ret = -ENOMEM;
2434 goto out_free_ethdev;
2435 }
2436
2437 INIT_LIST_HEAD(&port->mc_list->list);
2438
2439 ret = ehea_sense_port_attr(port);
2440 if (ret)
2441 goto out_free_mc_list;
2442
2443 port_dev = ehea_register_port(port, dn);
2444 if (!port_dev)
2445 goto out_free_mc_list;
2446
2447 SET_NETDEV_DEV(dev, port_dev);
7a291083
JBT		 2448
2449 /* initialize net_device structure */
2450 SET_MODULE_OWNER(dev);
2451
2452 memcpy(dev->dev_addr, &port->mac_addr, ETH_ALEN);
2453
2454 dev->open = ehea_open;
2455 dev->poll = ehea_poll;
2456 dev->weight = 64;
2457 dev->stop = ehea_stop;
2458 dev->hard_start_xmit = ehea_start_xmit;
2459 dev->get_stats = ehea_get_stats;
2460 dev->set_multicast_list = ehea_set_multicast_list;
2461 dev->set_mac_address = ehea_set_mac_addr;
2462 dev->change_mtu = ehea_change_mtu;
2463 dev->vlan_rx_register = ehea_vlan_rx_register;
2464 dev->vlan_rx_add_vid = ehea_vlan_rx_add_vid;
2465 dev->vlan_rx_kill_vid = ehea_vlan_rx_kill_vid;
2466 dev->features = NETIF_F_SG | NETIF_F_FRAGLIST | NETIF_F_TSO
2467 | NETIF_F_HIGHDMA | NETIF_F_HW_CSUM | NETIF_F_HW_VLAN_TX
2468 | NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_FILTER
2469 | NETIF_F_LLTX;
2470 dev->tx_timeout = &ehea_tx_watchdog;
2471 dev->watchdog_timeo = EHEA_WATCH_DOG_TIMEOUT;
2472
c4028958 2473 INIT_WORK(&port->reset_task, ehea_reset_port);
7a291083
JBT		 2474
2475 ehea_set_ethtool_ops(dev);
2476
2477 ret = register_netdev(dev);
2478 if (ret) {
2479 ehea_error("register_netdev failed. ret=%d", ret);
1acf2318 2480 goto out_unreg_port;
7a291083
JBT		 2481 }
2482
1acf2318
JBT		 2483 ret = ehea_get_jumboframe_status(port, &jumbo);
2484 if (ret)
2485 ehea_error("failed determining jumbo frame status for %s",
2486 port->netdev->name);
2487
9c750b7d
TK		 2488 ehea_info("%s: Jumbo frames are %sabled", dev->name,
2489 jumbo == 1 ? "en" : "dis");
2490
1acf2318 2491 return port;
7a291083 2492
1acf2318
JBT		 2493out_unreg_port:
2494 ehea_unregister_port(port);
2495
2496out_free_mc_list:
7a291083 2497 kfree(port->mc_list);
1acf2318
JBT		 2498
2499out_free_ethdev:
2500 free_netdev(dev);
2501
2502out_err:
2503 ehea_error("setting up logical port with id=%d failed, ret=%d",
2504 logical_port_id, ret);
2505 return NULL;
2506}
2507
2508static void ehea_shutdown_single_port(struct ehea_port *port)
2509{
2510 unregister_netdev(port->netdev);
2511 ehea_unregister_port(port);
2512 kfree(port->mc_list);
2513 free_netdev(port->netdev);
7a291083
JBT		 2514}
2515
2516static int ehea_setup_ports(struct ehea_adapter *adapter)
2517{
1acf2318
JBT		 2518 struct device_node *lhea_dn;
2519 struct device_node *eth_dn = NULL;
2520
2521 u32 *dn_log_port_id;
7a291083 2522 int port_setup_ok = 0;
1acf2318
JBT		 2523 int i = 0;
2524
2525 lhea_dn = adapter->ebus_dev->ofdev.node;
2526 do {
2527 eth_dn = of_get_next_child(lhea_dn, eth_dn);
2528 if (!eth_dn)
2529 break;
7a291083 2530
1acf2318
JBT		 2531 dn_log_port_id = (u32*)get_property(eth_dn, "ibm,hea-port-no",
2532 NULL);
2533 if (!dn_log_port_id) {
2534 ehea_error("bad device node: eth_dn name=%s",
2535 eth_dn->full_name);
2536 continue;
2537 }
7a291083 2538
1acf2318
JBT		 2539 adapter->port[i] = ehea_setup_single_port(adapter,
2540 *dn_log_port_id,
2541 eth_dn);
7a291083 2542 if (adapter->port[i])
1acf2318
JBT		 2543 ehea_info("%s -> logical port id #%d",
2544 adapter->port[i]->netdev->name,
2545 *dn_log_port_id);
2546 i++;
2547 } while (eth_dn);
2548
2549 of_node_put(lhea_dn);
7a291083 2550
1acf2318
JBT		 2551 /* Check for succesfully set up ports */
2552 for (i = 0; i < EHEA_MAX_PORTS; i++)
2553 if (adapter->port[i])
2554 port_setup_ok++;
7a291083 2555
1acf2318
JBT		 2556 if (port_setup_ok)
2557 return 0; /* At least some ports are setup correctly */
2558
2559 return -EINVAL;
2560}
2561
2562static struct device_node *ehea_get_eth_dn(struct ehea_adapter *adapter,
2563 u32 logical_port_id)
2564{
2565 struct device_node *lhea_dn;
2566 struct device_node *eth_dn = NULL;
2567 u32 *dn_log_port_id;
2568
2569 lhea_dn = adapter->ebus_dev->ofdev.node;
2570 do {
2571 eth_dn = of_get_next_child(lhea_dn, eth_dn);
2572 if (!eth_dn)
7a291083 2573 break;
7a291083 2574
1acf2318
JBT		 2575 dn_log_port_id = (u32*)get_property(eth_dn, "ibm,hea-port-no",
2576 NULL);
7a291083 2577
1acf2318
JBT		 2578 if (dn_log_port_id)
2579 if (*dn_log_port_id == logical_port_id)
2580 return eth_dn;
2581
2582 } while (eth_dn);
2583
2584 of_node_put(lhea_dn);
2585
2586 return NULL;
2587}
2588
2589static ssize_t ehea_probe_port(struct device *dev,
2590 struct device_attribute *attr,
2591 const char *buf, size_t count)
2592{
2593 struct ehea_adapter *adapter = dev->driver_data;
2594 struct ehea_port *port;
2595 struct device_node *eth_dn = NULL;
2596 int i;
2597
2598 u32 logical_port_id;
2599
2600 sscanf(buf, "%X", &logical_port_id);
2601
2602 port = ehea_get_port(adapter, logical_port_id);
2603
2604 if (port) {
2605 ehea_info("adding port with logical port id=%d failed. port "
2606 "already configured as %s.", logical_port_id,
2607 port->netdev->name);
2608 return -EINVAL;
7a291083 2609 }
1acf2318
JBT		 2610
2611 eth_dn = ehea_get_eth_dn(adapter, logical_port_id);
7a291083 2612
1acf2318
JBT		 2613 if (!eth_dn) {
2614 ehea_info("no logical port with id %d found", logical_port_id);
2615 return -EINVAL;
2616 }
2617
2618 port = ehea_setup_single_port(adapter, logical_port_id, eth_dn);
7a291083 2619
1acf2318
JBT		 2620 if (port) {
2621 for (i=0; i < EHEA_MAX_PORTS; i++)
2622 if (!adapter->port[i]) {
2623 adapter->port[i] = port;
2624 break;
2625 }
7a291083 2626
1acf2318
JBT		 2627 ehea_info("added %s (logical port id=%d)", port->netdev->name,
2628 logical_port_id);
2629 } else
2630 return -EIO;
7a291083 2631
1acf2318
JBT		 2632 return (ssize_t) count;
2633}
2634
2635static ssize_t ehea_remove_port(struct device *dev,
2636 struct device_attribute *attr,
2637 const char *buf, size_t count)
2638{
2639 struct ehea_adapter *adapter = dev->driver_data;
2640 struct ehea_port *port;
2641 int i;
2642 u32 logical_port_id;
2643
2644 sscanf(buf, "%X", &logical_port_id);
2645
2646 port = ehea_get_port(adapter, logical_port_id);
2647
2648 if (port) {
2649 ehea_info("removed %s (logical port id=%d)", port->netdev->name,
2650 logical_port_id);
2651
2652 ehea_shutdown_single_port(port);
2653
2654 for (i=0; i < EHEA_MAX_PORTS; i++)
2655 if (adapter->port[i] == port) {
2656 adapter->port[i] = NULL;
2657 break;
2658 }
2659 } else {
2660 ehea_error("removing port with logical port id=%d failed. port "
2661 "not configured.", logical_port_id);
2662 return -EINVAL;
2663 }
2664
2665 return (ssize_t) count;
2666}
2667
2668static DEVICE_ATTR(probe_port, S_IWUSR, NULL, ehea_probe_port);
2669static DEVICE_ATTR(remove_port, S_IWUSR, NULL, ehea_remove_port);
2670
2671int ehea_create_device_sysfs(struct ibmebus_dev *dev)
2672{
2673 int ret = device_create_file(&dev->ofdev.dev, &dev_attr_probe_port);
2674 if (ret)
2675 goto out;
2676
2677 ret = device_create_file(&dev->ofdev.dev, &dev_attr_remove_port);
2678out:
7a291083
JBT		 2679 return ret;
2680}
2681
1acf2318
JBT		 2682void ehea_remove_device_sysfs(struct ibmebus_dev *dev)
2683{
2684 device_remove_file(&dev->ofdev.dev, &dev_attr_probe_port);
2685 device_remove_file(&dev->ofdev.dev, &dev_attr_remove_port);
2686}
2687
2688static int __devinit ehea_probe_adapter(struct ibmebus_dev *dev,
2689 const struct of_device_id *id)
7a291083
JBT		 2690{
2691 struct ehea_adapter *adapter;
2692 u64 *adapter_handle;
2693 int ret;
2694
2695 adapter = kzalloc(sizeof(*adapter), GFP_KERNEL);
2696 if (!adapter) {
2697 ret = -ENOMEM;
2698 dev_err(&dev->ofdev.dev, "no mem for ehea_adapter\n");
2699 goto out;
2700 }
2701
1acf2318
JBT		 2702 adapter->ebus_dev = dev;
2703
7a291083
JBT		 2704 adapter_handle = (u64*)get_property(dev->ofdev.node, "ibm,hea-handle",
2705 NULL);
061bf3cd
TK		 2706 if (adapter_handle)
2707 adapter->handle = *adapter_handle;
2708
2709 if (!adapter->handle) {
7a291083
JBT		 2710 dev_err(&dev->ofdev.dev, "failed getting handle for adapter"
2711 " '%s'\n", dev->ofdev.node->full_name);
2712 ret = -ENODEV;
2713 goto out_free_ad;
2714 }
2715
7a291083
JBT		 2716 adapter->pd = EHEA_PD_ID;
2717
2718 dev->ofdev.dev.driver_data = adapter;
2719
2720 ret = ehea_reg_mr_adapter(adapter);
2721 if (ret) {
2722 dev_err(&dev->ofdev.dev, "reg_mr_adapter failed\n");
2723 goto out_free_ad;
2724 }
2725
2726 /* initialize adapter and ports */
2727 /* get adapter properties */
2728 ret = ehea_sense_adapter_attr(adapter);
2729 if (ret) {
2730 dev_err(&dev->ofdev.dev, "sense_adapter_attr failed: %d", ret);
2731 goto out_free_res;
2732 }
7a291083
JBT		 2733
2734 adapter->neq = ehea_create_eq(adapter,
2735 EHEA_NEQ, EHEA_MAX_ENTRIES_EQ, 1);
2736 if (!adapter->neq) {
2737 dev_err(&dev->ofdev.dev, "NEQ creation failed");
2738 goto out_free_res;
2739 }
2740
2741 tasklet_init(&adapter->neq_tasklet, ehea_neq_tasklet,
2742 (unsigned long)adapter);
2743
2744 ret = ibmebus_request_irq(NULL, adapter->neq->attr.ist1,
38515e90 2745 ehea_interrupt_neq, IRQF_DISABLED,
7a291083
JBT		 2746 "ehea_neq", adapter);
2747 if (ret) {
2748 dev_err(&dev->ofdev.dev, "requesting NEQ IRQ failed");
2749 goto out_kill_eq;
2750 }
2751
2752 adapter->ehea_wq = create_workqueue("ehea_wq");
2753 if (!adapter->ehea_wq)
2754 goto out_free_irq;
2755
1acf2318
JBT		 2756 if (ehea_create_device_sysfs(dev))
2757 goto out_kill_wq;
2758
7a291083
JBT		 2759 ret = ehea_setup_ports(adapter);
2760 if (ret) {
2761 dev_err(&dev->ofdev.dev, "setup_ports failed");
1acf2318 2762 goto out_rem_dev_sysfs;
7a291083
JBT		 2763 }
2764
2765 ret = 0;
2766 goto out;
2767
1acf2318
JBT		 2768out_rem_dev_sysfs:
2769 ehea_remove_device_sysfs(dev);
2770
7a291083
JBT		 2771out_kill_wq:
2772 destroy_workqueue(adapter->ehea_wq);
2773
2774out_free_irq:
2775 ibmebus_free_irq(NULL, adapter->neq->attr.ist1, adapter);
2776
2777out_kill_eq:
2778 ehea_destroy_eq(adapter->neq);
2779
2780out_free_res:
2781 ehea_h_free_resource(adapter->handle, adapter->mr.handle);
2782
2783out_free_ad:
2784 kfree(adapter);
2785out:
2786 return ret;
2787}
2788
7a291083
JBT		 2789static int __devexit ehea_remove(struct ibmebus_dev *dev)
2790{
2791 struct ehea_adapter *adapter = dev->ofdev.dev.driver_data;
2792 u64 hret;
2793 int i;
2794
1acf2318 2795 for (i = 0; i < EHEA_MAX_PORTS; i++)
7a291083
JBT		 2796 if (adapter->port[i]) {
2797 ehea_shutdown_single_port(adapter->port[i]);
2798 adapter->port[i] = NULL;
2799 }
1acf2318
JBT		 2800
2801 ehea_remove_device_sysfs(dev);
2802
7a291083
JBT		 2803 destroy_workqueue(adapter->ehea_wq);
2804
2805 ibmebus_free_irq(NULL, adapter->neq->attr.ist1, adapter);
d4150a27 2806 tasklet_kill(&adapter->neq_tasklet);
7a291083
JBT		 2807
2808 ehea_destroy_eq(adapter->neq);
2809
2810 hret = ehea_h_free_resource(adapter->handle, adapter->mr.handle);
2811 if (hret) {
2812 dev_err(&dev->ofdev.dev, "free_resource_mr failed");
2813 return -EIO;
2814 }
2815 kfree(adapter);
2816 return 0;
2817}
2818
2819static int check_module_parm(void)
2820{
2821 int ret = 0;
2822
2823 if ((rq1_entries < EHEA_MIN_ENTRIES_QP) ||
2824 (rq1_entries > EHEA_MAX_ENTRIES_RQ1)) {
2825 ehea_info("Bad parameter: rq1_entries");
2826 ret = -EINVAL;
2827 }
2828 if ((rq2_entries < EHEA_MIN_ENTRIES_QP) ||
2829 (rq2_entries > EHEA_MAX_ENTRIES_RQ2)) {
2830 ehea_info("Bad parameter: rq2_entries");
2831 ret = -EINVAL;
2832 }
2833 if ((rq3_entries < EHEA_MIN_ENTRIES_QP) ||
2834 (rq3_entries > EHEA_MAX_ENTRIES_RQ3)) {
2835 ehea_info("Bad parameter: rq3_entries");
2836 ret = -EINVAL;
2837 }
2838 if ((sq_entries < EHEA_MIN_ENTRIES_QP) ||
2839 (sq_entries > EHEA_MAX_ENTRIES_SQ)) {
2840 ehea_info("Bad parameter: sq_entries");
2841 ret = -EINVAL;
2842 }
2843
2844 return ret;
2845}
2846
2847static struct of_device_id ehea_device_table[] = {
2848 {
2849 .name = "lhea",
2850 .compatible = "IBM,lhea",
2851 },
2852 {},
2853};
2854
2855static struct ibmebus_driver ehea_driver = {
2856 .name = "ehea",
2857 .id_table = ehea_device_table,
1acf2318 2858 .probe = ehea_probe_adapter,
7a291083
JBT		 2859 .remove = ehea_remove,
2860};
2861
2862int __init ehea_module_init(void)
2863{
2864 int ret;
2865
2866 printk(KERN_INFO "IBM eHEA ethernet device driver (Release %s)\n",
2867 DRV_VERSION);
2868
2869 ret = check_module_parm();
2870 if (ret)
2871 goto out;
2872 ret = ibmebus_register_driver(&ehea_driver);
2873 if (ret)
2874 ehea_error("failed registering eHEA device driver on ebus");
2875
2876out:
2877 return ret;
2878}
2879
2880static void __exit ehea_module_exit(void)
2881{
2882 ibmebus_unregister_driver(&ehea_driver);
2883}
2884
2885module_init(ehea_module_init);
2886module_exit(ehea_module_exit);
Linux 6.x block layer and io_uring tree(s)