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drivers/net/acenic.c: fix check-after-use
[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;
18604c54
JBT		 54static int use_mcs = 0;
55static int num_tx_qps = EHEA_NUM_TX_QP;
7a291083
JBT		 56
57module_param(msg_level, int, 0);
58module_param(rq1_entries, int, 0);
59module_param(rq2_entries, int, 0);
60module_param(rq3_entries, int, 0);
61module_param(sq_entries, int, 0);
18604c54
JBT		 62module_param(use_mcs, int, 0);
63module_param(num_tx_qps, int, 0);
7a291083 64
18604c54 65MODULE_PARM_DESC(num_tx_qps, "Number of TX-QPS");
7a291083
JBT		 66MODULE_PARM_DESC(msg_level, "msg_level");
67MODULE_PARM_DESC(rq3_entries, "Number of entries for Receive Queue 3 "
68 "[2^x - 1], x = [6..14]. Default = "
69 __MODULE_STRING(EHEA_DEF_ENTRIES_RQ3) ")");
70MODULE_PARM_DESC(rq2_entries, "Number of entries for Receive Queue 2 "
71 "[2^x - 1], x = [6..14]. Default = "
72 __MODULE_STRING(EHEA_DEF_ENTRIES_RQ2) ")");
73MODULE_PARM_DESC(rq1_entries, "Number of entries for Receive Queue 1 "
74 "[2^x - 1], x = [6..14]. Default = "
75 __MODULE_STRING(EHEA_DEF_ENTRIES_RQ1) ")");
76MODULE_PARM_DESC(sq_entries, " Number of entries for the Send Queue "
77 "[2^x - 1], x = [6..14]. Default = "
78 __MODULE_STRING(EHEA_DEF_ENTRIES_SQ) ")");
18604c54 79MODULE_PARM_DESC(use_mcs, " 0:NAPI, 1:Multiple receive queues, Default = 1 ");
7a291083 80
d1dea38d 81static int port_name_cnt = 0;
44c82152
TK		 82static LIST_HEAD(adapter_list);
83u64 ehea_driver_flags = 0;
84struct workqueue_struct *ehea_driver_wq;
85struct work_struct ehea_rereg_mr_task;
86
d1dea38d
TK		 87
88static int __devinit ehea_probe_adapter(struct ibmebus_dev *dev,
d1d25aab 89 const struct of_device_id *id);
d1dea38d
TK		 90
91static int __devexit ehea_remove(struct ibmebus_dev *dev);
92
93static struct of_device_id ehea_device_table[] = {
94 {
95 .name = "lhea",
96 .compatible = "IBM,lhea",
97 },
98 {},
99};
100
101static struct ibmebus_driver ehea_driver = {
102 .name = "ehea",
103 .id_table = ehea_device_table,
104 .probe = ehea_probe_adapter,
105 .remove = ehea_remove,
106};
107
7a291083
JBT		 108void ehea_dump(void *adr, int len, char *msg) {
109 int x;
110 unsigned char *deb = adr;
111 for (x = 0; x < len; x += 16) {
d2db9eea 112 printk(DRV_NAME " %s adr=%p ofs=%04x %016lx %016lx\n", msg,
7a291083
JBT		 113 deb, x, *((u64*)&deb[0]), *((u64*)&deb[8]));
114 deb += 16;
115 }
116}
117
118static struct net_device_stats *ehea_get_stats(struct net_device *dev)
119{
120 struct ehea_port *port = netdev_priv(dev);
121 struct net_device_stats *stats = &port->stats;
122 struct hcp_ehea_port_cb2 *cb2;
123 u64 hret, rx_packets;
124 int i;
125
126 memset(stats, 0, sizeof(*stats));
127
a1d261c5 128 cb2 = kzalloc(PAGE_SIZE, GFP_KERNEL);
7a291083
JBT		 129 if (!cb2) {
130 ehea_error("no mem for cb2");
131 goto out;
132 }
133
134 hret = ehea_h_query_ehea_port(port->adapter->handle,
135 port->logical_port_id,
136 H_PORT_CB2, H_PORT_CB2_ALL, cb2);
137 if (hret != H_SUCCESS) {
138 ehea_error("query_ehea_port failed");
139 goto out_herr;
140 }
141
142 if (netif_msg_hw(port))
143 ehea_dump(cb2, sizeof(*cb2), "net_device_stats");
144
145 rx_packets = 0;
146 for (i = 0; i < port->num_def_qps; i++)
147 rx_packets += port->port_res[i].rx_packets;
148
149 stats->tx_packets = cb2->txucp + cb2->txmcp + cb2->txbcp;
150 stats->multicast = cb2->rxmcp;
151 stats->rx_errors = cb2->rxuerr;
152 stats->rx_bytes = cb2->rxo;
153 stats->tx_bytes = cb2->txo;
154 stats->rx_packets = rx_packets;
155
156out_herr:
157 kfree(cb2);
158out:
159 return stats;
160}
161
162static void ehea_refill_rq1(struct ehea_port_res *pr, int index, int nr_of_wqes)
163{
164 struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
165 struct net_device *dev = pr->port->netdev;
166 int max_index_mask = pr->rq1_skba.len - 1;
167 int i;
168
169 if (!nr_of_wqes)
170 return;
171
172 for (i = 0; i < nr_of_wqes; i++) {
173 if (!skb_arr_rq1[index]) {
174 skb_arr_rq1[index] = netdev_alloc_skb(dev,
175 EHEA_L_PKT_SIZE);
176 if (!skb_arr_rq1[index]) {
177 ehea_error("%s: no mem for skb/%d wqes filled",
178 dev->name, i);
179 break;
180 }
181 }
182 index--;
183 index &= max_index_mask;
184 }
185 /* Ring doorbell */
186 ehea_update_rq1a(pr->qp, i);
187}
188
189static int ehea_init_fill_rq1(struct ehea_port_res *pr, int nr_rq1a)
190{
191 int ret = 0;
192 struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
193 struct net_device *dev = pr->port->netdev;
194 int i;
195
196 for (i = 0; i < pr->rq1_skba.len; i++) {
197 skb_arr_rq1[i] = netdev_alloc_skb(dev, EHEA_L_PKT_SIZE);
198 if (!skb_arr_rq1[i]) {
199 ehea_error("%s: no mem for skb/%d wqes filled",
200 dev->name, i);
201 ret = -ENOMEM;
202 goto out;
203 }
204 }
205 /* Ring doorbell */
206 ehea_update_rq1a(pr->qp, nr_rq1a);
207out:
208 return ret;
209}
210
211static int ehea_refill_rq_def(struct ehea_port_res *pr,
212 struct ehea_q_skb_arr *q_skba, int rq_nr,
213 int num_wqes, int wqe_type, int packet_size)
214{
215 struct net_device *dev = pr->port->netdev;
216 struct ehea_qp *qp = pr->qp;
217 struct sk_buff **skb_arr = q_skba->arr;
218 struct ehea_rwqe *rwqe;
219 int i, index, max_index_mask, fill_wqes;
220 int ret = 0;
221
222 fill_wqes = q_skba->os_skbs + num_wqes;
223
224 if (!fill_wqes)
225 return ret;
226
227 index = q_skba->index;
228 max_index_mask = q_skba->len - 1;
229 for (i = 0; i < fill_wqes; i++) {
230 struct sk_buff *skb = netdev_alloc_skb(dev, packet_size);
231 if (!skb) {
232 ehea_error("%s: no mem for skb/%d wqes filled",
18604c54 233 pr->port->netdev->name, i);
7a291083
JBT		 234 q_skba->os_skbs = fill_wqes - i;
235 ret = -ENOMEM;
236 break;
237 }
238 skb_reserve(skb, NET_IP_ALIGN);
239
240 skb_arr[index] = skb;
241
242 rwqe = ehea_get_next_rwqe(qp, rq_nr);
243 rwqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, wqe_type)
d1d25aab 244 | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, index);
7a291083 245 rwqe->sg_list[0].l_key = pr->recv_mr.lkey;
44c82152 246 rwqe->sg_list[0].vaddr = ehea_map_vaddr(skb->data);
7a291083
JBT		 247 rwqe->sg_list[0].len = packet_size;
248 rwqe->data_segments = 1;
249
250 index++;
251 index &= max_index_mask;
44c82152
TK		 252
253 if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags)))
254 goto out;
7a291083 255 }
44c82152 256
7a291083
JBT		 257 q_skba->index = index;
258
259 /* Ring doorbell */
260 iosync();
261 if (rq_nr == 2)
262 ehea_update_rq2a(pr->qp, i);
263 else
264 ehea_update_rq3a(pr->qp, i);
44c82152 265out:
7a291083
JBT		 266 return ret;
267}
268
269
270static int ehea_refill_rq2(struct ehea_port_res *pr, int nr_of_wqes)
271{
272 return ehea_refill_rq_def(pr, &pr->rq2_skba, 2,
273 nr_of_wqes, EHEA_RWQE2_TYPE,
274 EHEA_RQ2_PKT_SIZE + NET_IP_ALIGN);
275}
276
277
278static int ehea_refill_rq3(struct ehea_port_res *pr, int nr_of_wqes)
279{
280 return ehea_refill_rq_def(pr, &pr->rq3_skba, 3,
281 nr_of_wqes, EHEA_RWQE3_TYPE,
282 EHEA_MAX_PACKET_SIZE + NET_IP_ALIGN);
283}
284
285static inline int ehea_check_cqe(struct ehea_cqe *cqe, int *rq_num)
286{
287 *rq_num = (cqe->type & EHEA_CQE_TYPE_RQ) >> 5;
288 if ((cqe->status & EHEA_CQE_STAT_ERR_MASK) == 0)
289 return 0;
290 if (((cqe->status & EHEA_CQE_STAT_ERR_TCP) != 0) &&
291 (cqe->header_length == 0))
292 return 0;
293 return -EINVAL;
294}
295
296static inline void ehea_fill_skb(struct net_device *dev,
297 struct sk_buff *skb, struct ehea_cqe *cqe)
298{
299 int length = cqe->num_bytes_transfered - 4; /*remove CRC */
300
301 skb_put(skb, length);
302 skb->ip_summed = CHECKSUM_UNNECESSARY;
303 skb->protocol = eth_type_trans(skb, dev);
304}
305
306static inline struct sk_buff *get_skb_by_index(struct sk_buff **skb_array,
307 int arr_len,
308 struct ehea_cqe *cqe)
309{
310 int skb_index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, cqe->wr_id);
311 struct sk_buff *skb;
312 void *pref;
313 int x;
314
315 x = skb_index + 1;
316 x &= (arr_len - 1);
317
318 pref = skb_array[x];
319 prefetchw(pref);
320 prefetchw(pref + EHEA_CACHE_LINE);
321
322 pref = (skb_array[x]->data);
323 prefetch(pref);
324 prefetch(pref + EHEA_CACHE_LINE);
325 prefetch(pref + EHEA_CACHE_LINE * 2);
326 prefetch(pref + EHEA_CACHE_LINE * 3);
327 skb = skb_array[skb_index];
328 skb_array[skb_index] = NULL;
329 return skb;
330}
331
332static inline struct sk_buff *get_skb_by_index_ll(struct sk_buff **skb_array,
333 int arr_len, int wqe_index)
334{
335 struct sk_buff *skb;
336 void *pref;
337 int x;
338
339 x = wqe_index + 1;
340 x &= (arr_len - 1);
341
342 pref = skb_array[x];
343 prefetchw(pref);
344 prefetchw(pref + EHEA_CACHE_LINE);
345
346 pref = (skb_array[x]->data);
347 prefetchw(pref);
348 prefetchw(pref + EHEA_CACHE_LINE);
349
350 skb = skb_array[wqe_index];
351 skb_array[wqe_index] = NULL;
352 return skb;
353}
354
355static int ehea_treat_poll_error(struct ehea_port_res *pr, int rq,
356 struct ehea_cqe *cqe, int *processed_rq2,
357 int *processed_rq3)
358{
359 struct sk_buff *skb;
360
acbddb59
JBT		 361 if (cqe->status & EHEA_CQE_STAT_ERR_TCP)
362 pr->p_stats.err_tcp_cksum++;
363 if (cqe->status & EHEA_CQE_STAT_ERR_IP)
364 pr->p_stats.err_ip_cksum++;
365 if (cqe->status & EHEA_CQE_STAT_ERR_CRC)
366 pr->p_stats.err_frame_crc++;
367
7a291083
JBT		 368 if (netif_msg_rx_err(pr->port)) {
369 ehea_error("CQE Error for QP %d", pr->qp->init_attr.qp_nr);
370 ehea_dump(cqe, sizeof(*cqe), "CQE");
371 }
372
373 if (rq == 2) {
374 *processed_rq2 += 1;
375 skb = get_skb_by_index(pr->rq2_skba.arr, pr->rq2_skba.len, cqe);
376 dev_kfree_skb(skb);
377 } else if (rq == 3) {
378 *processed_rq3 += 1;
379 skb = get_skb_by_index(pr->rq3_skba.arr, pr->rq3_skba.len, cqe);
380 dev_kfree_skb(skb);
381 }
382
383 if (cqe->status & EHEA_CQE_STAT_FAT_ERR_MASK) {
384 ehea_error("Critical receive error. Resetting port.");
385 queue_work(pr->port->adapter->ehea_wq, &pr->port->reset_task);
386 return 1;
387 }
388
389 return 0;
390}
391
18604c54
JBT		 392static struct ehea_cqe *ehea_proc_rwqes(struct net_device *dev,
393 struct ehea_port_res *pr,
394 int *budget)
7a291083 395{
18604c54 396 struct ehea_port *port = pr->port;
7a291083
JBT		 397 struct ehea_qp *qp = pr->qp;
398 struct ehea_cqe *cqe;
399 struct sk_buff *skb;
400 struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
401 struct sk_buff **skb_arr_rq2 = pr->rq2_skba.arr;
402 struct sk_buff **skb_arr_rq3 = pr->rq3_skba.arr;
403 int skb_arr_rq1_len = pr->rq1_skba.len;
404 int skb_arr_rq2_len = pr->rq2_skba.len;
405 int skb_arr_rq3_len = pr->rq3_skba.len;
406 int processed, processed_rq1, processed_rq2, processed_rq3;
18604c54 407 int wqe_index, last_wqe_index, rq, my_quota, port_reset;
7a291083
JBT		 408
409 processed = processed_rq1 = processed_rq2 = processed_rq3 = 0;
410 last_wqe_index = 0;
411 my_quota = min(*budget, dev->quota);
7a291083 412
7a291083
JBT		 413 cqe = ehea_poll_rq1(qp, &wqe_index);
414 while ((my_quota > 0) && cqe) {
415 ehea_inc_rq1(qp);
416 processed_rq1++;
417 processed++;
418 my_quota--;
419 if (netif_msg_rx_status(port))
420 ehea_dump(cqe, sizeof(*cqe), "CQE");
421
422 last_wqe_index = wqe_index;
423 rmb();
424 if (!ehea_check_cqe(cqe, &rq)) {
425 if (rq == 1) { /* LL RQ1 */
426 skb = get_skb_by_index_ll(skb_arr_rq1,
427 skb_arr_rq1_len,
428 wqe_index);
429 if (unlikely(!skb)) {
430 if (netif_msg_rx_err(port))
431 ehea_error("LL rq1: skb=NULL");
18604c54
JBT		 432
433 skb = netdev_alloc_skb(port->netdev,
7a291083
JBT		 434 EHEA_L_PKT_SIZE);
435 if (!skb)
436 break;
437 }
27d7ff46 438 skb_copy_to_linear_data(skb, ((char*)cqe) + 64,
d1d25aab 439 cqe->num_bytes_transfered - 4);
ade21372 440 ehea_fill_skb(port->netdev, skb, cqe);
7a291083
JBT		 441 } else if (rq == 2) { /* RQ2 */
442 skb = get_skb_by_index(skb_arr_rq2,
443 skb_arr_rq2_len, cqe);
444 if (unlikely(!skb)) {
445 if (netif_msg_rx_err(port))
446 ehea_error("rq2: skb=NULL");
447 break;
448 }
18604c54 449 ehea_fill_skb(port->netdev, skb, cqe);
7a291083
JBT		 450 processed_rq2++;
451 } else { /* RQ3 */
452 skb = get_skb_by_index(skb_arr_rq3,
453 skb_arr_rq3_len, cqe);
454 if (unlikely(!skb)) {
455 if (netif_msg_rx_err(port))
456 ehea_error("rq3: skb=NULL");
457 break;
458 }
18604c54 459 ehea_fill_skb(port->netdev, skb, cqe);
7a291083
JBT		 460 processed_rq3++;
461 }
462
dec590c1
TK		 463 if ((cqe->status & EHEA_CQE_VLAN_TAG_XTRACT)
464 && port->vgrp)
7a291083
JBT		 465 vlan_hwaccel_receive_skb(skb, port->vgrp,
466 cqe->vlan_tag);
467 else
468 netif_receive_skb(skb);
f9e29228
TK		 469
470 dev->last_rx = jiffies;
18604c54 471 } else {
acbddb59 472 pr->p_stats.poll_receive_errors++;
7a291083
JBT		 473 port_reset = ehea_treat_poll_error(pr, rq, cqe,
474 &processed_rq2,
475 &processed_rq3);
476 if (port_reset)
477 break;
478 }
479 cqe = ehea_poll_rq1(qp, &wqe_index);
480 }
481
7a291083 482 pr->rx_packets += processed;
18604c54 483 *budget -= processed;
7a291083
JBT		 484
485 ehea_refill_rq1(pr, last_wqe_index, processed_rq1);
486 ehea_refill_rq2(pr, processed_rq2);
487 ehea_refill_rq3(pr, processed_rq3);
488
18604c54
JBT		 489 cqe = ehea_poll_rq1(qp, &wqe_index);
490 return cqe;
7a291083
JBT		 491}
492
18604c54 493static struct ehea_cqe *ehea_proc_cqes(struct ehea_port_res *pr, int my_quota)
7a291083 494{
acbddb59 495 struct sk_buff *skb;
7a291083
JBT		 496 struct ehea_cq *send_cq = pr->send_cq;
497 struct ehea_cqe *cqe;
18604c54 498 int quota = my_quota;
7a291083
JBT		 499 int cqe_counter = 0;
500 int swqe_av = 0;
acbddb59 501 int index;
7a291083
JBT		 502 unsigned long flags;
503
18604c54
JBT		 504 cqe = ehea_poll_cq(send_cq);
505 while(cqe && (quota > 0)) {
506 ehea_inc_cq(send_cq);
507
7a291083
JBT		 508 cqe_counter++;
509 rmb();
510 if (cqe->status & EHEA_CQE_STAT_ERR_MASK) {
511 ehea_error("Send Completion Error: Resetting port");
512 if (netif_msg_tx_err(pr->port))
513 ehea_dump(cqe, sizeof(*cqe), "Send CQE");
514 queue_work(pr->port->adapter->ehea_wq,
515 &pr->port->reset_task);
516 break;
517 }
518
519 if (netif_msg_tx_done(pr->port))
520 ehea_dump(cqe, sizeof(*cqe), "CQE");
521
522 if (likely(EHEA_BMASK_GET(EHEA_WR_ID_TYPE, cqe->wr_id)
acbddb59
JBT		 523 == EHEA_SWQE2_TYPE)) {
524
525 index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, cqe->wr_id);
526 skb = pr->sq_skba.arr[index];
527 dev_kfree_skb(skb);
528 pr->sq_skba.arr[index] = NULL;
529 }
7a291083
JBT		 530
531 swqe_av += EHEA_BMASK_GET(EHEA_WR_ID_REFILL, cqe->wr_id);
532 quota--;
18604c54
JBT		 533
534 cqe = ehea_poll_cq(send_cq);
535 };
7a291083
JBT		 536
537 ehea_update_feca(send_cq, cqe_counter);
538 atomic_add(swqe_av, &pr->swqe_avail);
539
540 spin_lock_irqsave(&pr->netif_queue, flags);
18604c54 541
7a291083
JBT		 542 if (pr->queue_stopped && (atomic_read(&pr->swqe_avail)
543 >= pr->swqe_refill_th)) {
544 netif_wake_queue(pr->port->netdev);
545 pr->queue_stopped = 0;
546 }
547 spin_unlock_irqrestore(&pr->netif_queue, flags);
548
18604c54 549 return cqe;
7a291083
JBT		 550}
551
18604c54
JBT		 552#define EHEA_NAPI_POLL_NUM_BEFORE_IRQ 16
553
554static int ehea_poll(struct net_device *dev, int *budget)
7a291083 555{
18604c54
JBT		 556 struct ehea_port_res *pr = dev->priv;
557 struct ehea_cqe *cqe;
558 struct ehea_cqe *cqe_skb = NULL;
559 int force_irq, wqe_index;
560
561 cqe = ehea_poll_rq1(pr->qp, &wqe_index);
562 cqe_skb = ehea_poll_cq(pr->send_cq);
563
564 force_irq = (pr->poll_counter > EHEA_NAPI_POLL_NUM_BEFORE_IRQ);
565
566 if ((!cqe && !cqe_skb) || force_irq) {
567 pr->poll_counter = 0;
568 netif_rx_complete(dev);
569 ehea_reset_cq_ep(pr->recv_cq);
570 ehea_reset_cq_ep(pr->send_cq);
571 ehea_reset_cq_n1(pr->recv_cq);
572 ehea_reset_cq_n1(pr->send_cq);
573 cqe = ehea_poll_rq1(pr->qp, &wqe_index);
574 cqe_skb = ehea_poll_cq(pr->send_cq);
575
e542aa6b 576 if (!cqe && !cqe_skb)
18604c54
JBT		 577 return 0;
578
e542aa6b 579 if (!netif_rx_reschedule(dev, dev->quota))
18604c54
JBT		 580 return 0;
581 }
e542aa6b 582
18604c54
JBT		 583 cqe = ehea_proc_rwqes(dev, pr, budget);
584 cqe_skb = ehea_proc_cqes(pr, 300);
585
586 if (cqe || cqe_skb)
587 pr->poll_counter++;
e542aa6b 588
18604c54 589 return 1;
7a291083
JBT		 590}
591
7d12e780 592static irqreturn_t ehea_recv_irq_handler(int irq, void *param)
7a291083
JBT		 593{
594 struct ehea_port_res *pr = param;
18604c54
JBT		 595
596 netif_rx_schedule(pr->d_netdev);
597
7a291083
JBT		 598 return IRQ_HANDLED;
599}
600
7d12e780 601static irqreturn_t ehea_qp_aff_irq_handler(int irq, void *param)
7a291083
JBT		 602{
603 struct ehea_port *port = param;
604 struct ehea_eqe *eqe;
d2db9eea 605 struct ehea_qp *qp;
7a291083
JBT		 606 u32 qp_token;
607
608 eqe = ehea_poll_eq(port->qp_eq);
bb3a6449 609
7a291083 610 while (eqe) {
7a291083 611 qp_token = EHEA_BMASK_GET(EHEA_EQE_QP_TOKEN, eqe->entry);
bb3a6449
TK		 612 ehea_error("QP aff_err: entry=0x%lx, token=0x%x",
613 eqe->entry, qp_token);
d2db9eea
JBT		 614
615 qp = port->port_res[qp_token].qp;
616 ehea_error_data(port->adapter, qp->fw_handle);
bb3a6449 617 eqe = ehea_poll_eq(port->qp_eq);
7a291083
JBT		 618 }
619
d2db9eea
JBT		 620 queue_work(port->adapter->ehea_wq, &port->reset_task);
621
7a291083
JBT		 622 return IRQ_HANDLED;
623}
624
625static struct ehea_port *ehea_get_port(struct ehea_adapter *adapter,
626 int logical_port)
627{
628 int i;
629
1acf2318 630 for (i = 0; i < EHEA_MAX_PORTS; i++)
41b69c70 631 if (adapter->port[i])
d1d25aab 632 if (adapter->port[i]->logical_port_id == logical_port)
41b69c70 633 return adapter->port[i];
7a291083
JBT		 634 return NULL;
635}
636
637int ehea_sense_port_attr(struct ehea_port *port)
638{
639 int ret;
640 u64 hret;
641 struct hcp_ehea_port_cb0 *cb0;
642
a1d261c5
TK		 643 cb0 = kzalloc(PAGE_SIZE, GFP_ATOMIC); /* May be called via */
644 if (!cb0) { /* ehea_neq_tasklet() */
7a291083
JBT		 645 ehea_error("no mem for cb0");
646 ret = -ENOMEM;
647 goto out;
648 }
649
650 hret = ehea_h_query_ehea_port(port->adapter->handle,
651 port->logical_port_id, H_PORT_CB0,
652 EHEA_BMASK_SET(H_PORT_CB0_ALL, 0xFFFF),
653 cb0);
654 if (hret != H_SUCCESS) {
655 ret = -EIO;
656 goto out_free;
657 }
658
659 /* MAC address */
660 port->mac_addr = cb0->port_mac_addr << 16;
661
662 if (!is_valid_ether_addr((u8*)&port->mac_addr)) {
663 ret = -EADDRNOTAVAIL;
664 goto out_free;
665 }
666
667 /* Port speed */
668 switch (cb0->port_speed) {
669 case H_SPEED_10M_H:
670 port->port_speed = EHEA_SPEED_10M;
671 port->full_duplex = 0;
672 break;
673 case H_SPEED_10M_F:
674 port->port_speed = EHEA_SPEED_10M;
675 port->full_duplex = 1;
676 break;
677 case H_SPEED_100M_H:
678 port->port_speed = EHEA_SPEED_100M;
679 port->full_duplex = 0;
680 break;
681 case H_SPEED_100M_F:
682 port->port_speed = EHEA_SPEED_100M;
683 port->full_duplex = 1;
684 break;
685 case H_SPEED_1G_F:
686 port->port_speed = EHEA_SPEED_1G;
687 port->full_duplex = 1;
688 break;
689 case H_SPEED_10G_F:
690 port->port_speed = EHEA_SPEED_10G;
691 port->full_duplex = 1;
692 break;
693 default:
694 port->port_speed = 0;
695 port->full_duplex = 0;
696 break;
697 }
698
e919b593 699 port->autoneg = 1;
18604c54 700 port->num_mcs = cb0->num_default_qps;
e919b593 701
7a291083 702 /* Number of default QPs */
18604c54
JBT		 703 if (use_mcs)
704 port->num_def_qps = cb0->num_default_qps;
705 else
706 port->num_def_qps = 1;
7a291083
JBT		 707
708 if (!port->num_def_qps) {
709 ret = -EINVAL;
710 goto out_free;
711 }
712
18604c54
JBT		 713 port->num_tx_qps = num_tx_qps;
714
715 if (port->num_def_qps >= port->num_tx_qps)
7a291083
JBT		 716 port->num_add_tx_qps = 0;
717 else
18604c54 718 port->num_add_tx_qps = port->num_tx_qps - port->num_def_qps;
7a291083
JBT		 719
720 ret = 0;
721out_free:
722 if (ret || netif_msg_probe(port))
723 ehea_dump(cb0, sizeof(*cb0), "ehea_sense_port_attr");
724 kfree(cb0);
725out:
726 return ret;
727}
728
729int ehea_set_portspeed(struct ehea_port *port, u32 port_speed)
730{
731 struct hcp_ehea_port_cb4 *cb4;
732 u64 hret;
733 int ret = 0;
734
a1d261c5 735 cb4 = kzalloc(PAGE_SIZE, GFP_KERNEL);
7a291083
JBT		 736 if (!cb4) {
737 ehea_error("no mem for cb4");
738 ret = -ENOMEM;
739 goto out;
740 }
741
742 cb4->port_speed = port_speed;
743
744 netif_carrier_off(port->netdev);
745
746 hret = ehea_h_modify_ehea_port(port->adapter->handle,
747 port->logical_port_id,
748 H_PORT_CB4, H_PORT_CB4_SPEED, cb4);
749 if (hret == H_SUCCESS) {
750 port->autoneg = port_speed == EHEA_SPEED_AUTONEG ? 1 : 0;
751
752 hret = ehea_h_query_ehea_port(port->adapter->handle,
753 port->logical_port_id,
754 H_PORT_CB4, H_PORT_CB4_SPEED,
755 cb4);
756 if (hret == H_SUCCESS) {
757 switch (cb4->port_speed) {
758 case H_SPEED_10M_H:
759 port->port_speed = EHEA_SPEED_10M;
760 port->full_duplex = 0;
761 break;
762 case H_SPEED_10M_F:
763 port->port_speed = EHEA_SPEED_10M;
764 port->full_duplex = 1;
765 break;
766 case H_SPEED_100M_H:
767 port->port_speed = EHEA_SPEED_100M;
768 port->full_duplex = 0;
769 break;
770 case H_SPEED_100M_F:
771 port->port_speed = EHEA_SPEED_100M;
772 port->full_duplex = 1;
773 break;
774 case H_SPEED_1G_F:
775 port->port_speed = EHEA_SPEED_1G;
776 port->full_duplex = 1;
777 break;
778 case H_SPEED_10G_F:
779 port->port_speed = EHEA_SPEED_10G;
780 port->full_duplex = 1;
781 break;
782 default:
783 port->port_speed = 0;
784 port->full_duplex = 0;
785 break;
786 }
787 } else {
788 ehea_error("Failed sensing port speed");
789 ret = -EIO;
790 }
791 } else {
792 if (hret == H_AUTHORITY) {
7674a588 793 ehea_info("Hypervisor denied setting port speed");
7a291083
JBT		 794 ret = -EPERM;
795 } else {
796 ret = -EIO;
797 ehea_error("Failed setting port speed");
798 }
799 }
800 netif_carrier_on(port->netdev);
801 kfree(cb4);
802out:
803 return ret;
804}
805
806static void ehea_parse_eqe(struct ehea_adapter *adapter, u64 eqe)
807{
808 int ret;
809 u8 ec;
810 u8 portnum;
811 struct ehea_port *port;
812
813 ec = EHEA_BMASK_GET(NEQE_EVENT_CODE, eqe);
814 portnum = EHEA_BMASK_GET(NEQE_PORTNUM, eqe);
815 port = ehea_get_port(adapter, portnum);
816
817 switch (ec) {
818 case EHEA_EC_PORTSTATE_CHG: /* port state change */
819
820 if (!port) {
821 ehea_error("unknown portnum %x", portnum);
822 break;
823 }
824
825 if (EHEA_BMASK_GET(NEQE_PORT_UP, eqe)) {
826 if (!netif_carrier_ok(port->netdev)) {
1e1675cc 827 ret = ehea_sense_port_attr(port);
7a291083
JBT		 828 if (ret) {
829 ehea_error("failed resensing port "
830 "attributes");
831 break;
832 }
833
834 if (netif_msg_link(port))
835 ehea_info("%s: Logical port up: %dMbps "
836 "%s Duplex",
837 port->netdev->name,
838 port->port_speed,
839 port->full_duplex ==
840 1 ? "Full" : "Half");
841
842 netif_carrier_on(port->netdev);
843 netif_wake_queue(port->netdev);
844 }
845 } else
846 if (netif_carrier_ok(port->netdev)) {
847 if (netif_msg_link(port))
848 ehea_info("%s: Logical port down",
849 port->netdev->name);
850 netif_carrier_off(port->netdev);
851 netif_stop_queue(port->netdev);
852 }
853
854 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PORT_UP, eqe)) {
855 if (netif_msg_link(port))
856 ehea_info("%s: Physical port up",
857 port->netdev->name);
858 } else {
859 if (netif_msg_link(port))
860 ehea_info("%s: Physical port down",
861 port->netdev->name);
862 }
863
864 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PRIMARY, eqe))
865 ehea_info("External switch port is primary port");
866 else
867 ehea_info("External switch port is backup port");
868
869 break;
870 case EHEA_EC_ADAPTER_MALFUNC:
871 ehea_error("Adapter malfunction");
872 break;
873 case EHEA_EC_PORT_MALFUNC:
874 ehea_info("Port malfunction: Device: %s", port->netdev->name);
875 netif_carrier_off(port->netdev);
876 netif_stop_queue(port->netdev);
877 break;
878 default:
bff0a55f 879 ehea_error("unknown event code %x, eqe=0x%lX", ec, eqe);
7a291083
JBT		 880 break;
881 }
882}
883
884static void ehea_neq_tasklet(unsigned long data)
885{
886 struct ehea_adapter *adapter = (struct ehea_adapter*)data;
887 struct ehea_eqe *eqe;
888 u64 event_mask;
889
890 eqe = ehea_poll_eq(adapter->neq);
891 ehea_debug("eqe=%p", eqe);
892
893 while (eqe) {
894 ehea_debug("*eqe=%lx", eqe->entry);
895 ehea_parse_eqe(adapter, eqe->entry);
896 eqe = ehea_poll_eq(adapter->neq);
897 ehea_debug("next eqe=%p", eqe);
898 }
899
900 event_mask = EHEA_BMASK_SET(NELR_PORTSTATE_CHG, 1)
901 | EHEA_BMASK_SET(NELR_ADAPTER_MALFUNC, 1)
902 | EHEA_BMASK_SET(NELR_PORT_MALFUNC, 1);
903
904 ehea_h_reset_events(adapter->handle,
905 adapter->neq->fw_handle, event_mask);
906}
907
7d12e780 908static irqreturn_t ehea_interrupt_neq(int irq, void *param)
7a291083
JBT		 909{
910 struct ehea_adapter *adapter = param;
911 tasklet_hi_schedule(&adapter->neq_tasklet);
912 return IRQ_HANDLED;
913}
914
915
916static int ehea_fill_port_res(struct ehea_port_res *pr)
917{
918 int ret;
919 struct ehea_qp_init_attr *init_attr = &pr->qp->init_attr;
920
921 ret = ehea_init_fill_rq1(pr, init_attr->act_nr_rwqes_rq1
922 - init_attr->act_nr_rwqes_rq2
923 - init_attr->act_nr_rwqes_rq3 - 1);
924
925 ret |= ehea_refill_rq2(pr, init_attr->act_nr_rwqes_rq2 - 1);
926
927 ret |= ehea_refill_rq3(pr, init_attr->act_nr_rwqes_rq3 - 1);
928
929 return ret;
930}
931
932static int ehea_reg_interrupts(struct net_device *dev)
933{
934 struct ehea_port *port = netdev_priv(dev);
935 struct ehea_port_res *pr;
936 int i, ret;
937
7a291083
JBT		 938
939 snprintf(port->int_aff_name, EHEA_IRQ_NAME_SIZE - 1, "%s-aff",
940 dev->name);
941
942 ret = ibmebus_request_irq(NULL, port->qp_eq->attr.ist1,
943 ehea_qp_aff_irq_handler,
38515e90 944 IRQF_DISABLED, port->int_aff_name, port);
7a291083
JBT		 945 if (ret) {
946 ehea_error("failed registering irq for qp_aff_irq_handler:"
947 "ist=%X", port->qp_eq->attr.ist1);
948 goto out_free_qpeq;
949 }
950
951 if (netif_msg_ifup(port))
952 ehea_info("irq_handle 0x%X for function qp_aff_irq_handler "
953 "registered", port->qp_eq->attr.ist1);
954
18604c54 955
7a291083
JBT		 956 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
957 pr = &port->port_res[i];
958 snprintf(pr->int_send_name, EHEA_IRQ_NAME_SIZE - 1,
18604c54
JBT		 959 "%s-queue%d", dev->name, i);
960 ret = ibmebus_request_irq(NULL, pr->eq->attr.ist1,
961 ehea_recv_irq_handler,
38515e90 962 IRQF_DISABLED, pr->int_send_name,
7a291083
JBT		 963 pr);
964 if (ret) {
18604c54 965 ehea_error("failed registering irq for ehea_queue "
7a291083 966 "port_res_nr:%d, ist=%X", i,
18604c54 967 pr->eq->attr.ist1);
7a291083
JBT		 968 goto out_free_req;
969 }
970 if (netif_msg_ifup(port))
18604c54
JBT		 971 ehea_info("irq_handle 0x%X for function ehea_queue_int "
972 "%d registered", pr->eq->attr.ist1, i);
7a291083
JBT		 973 }
974out:
975 return ret;
976
18604c54 977
7a291083
JBT		 978out_free_req:
979 while (--i >= 0) {
18604c54 980 u32 ist = port->port_res[i].eq->attr.ist1;
7a291083
JBT		 981 ibmebus_free_irq(NULL, ist, &port->port_res[i]);
982 }
18604c54 983
7a291083
JBT		 984out_free_qpeq:
985 ibmebus_free_irq(NULL, port->qp_eq->attr.ist1, port);
986 i = port->num_def_qps;
18604c54 987
7a291083 988 goto out;
18604c54 989
7a291083
JBT		 990}
991
992static void ehea_free_interrupts(struct net_device *dev)
993{
994 struct ehea_port *port = netdev_priv(dev);
995 struct ehea_port_res *pr;
996 int i;
997
998 /* send */
18604c54 999
7a291083
JBT		 1000 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
1001 pr = &port->port_res[i];
18604c54 1002 ibmebus_free_irq(NULL, pr->eq->attr.ist1, pr);
7a291083
JBT		 1003 if (netif_msg_intr(port))
1004 ehea_info("free send irq for res %d with handle 0x%X",
18604c54 1005 i, pr->eq->attr.ist1);
7a291083
JBT		 1006 }
1007
1008 /* associated events */
1009 ibmebus_free_irq(NULL, port->qp_eq->attr.ist1, port);
1010 if (netif_msg_intr(port))
1011 ehea_info("associated event interrupt for handle 0x%X freed",
1012 port->qp_eq->attr.ist1);
1013}
1014
1015static int ehea_configure_port(struct ehea_port *port)
1016{
1017 int ret, i;
1018 u64 hret, mask;
1019 struct hcp_ehea_port_cb0 *cb0;
1020
1021 ret = -ENOMEM;
a1d261c5 1022 cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL);
7a291083
JBT		 1023 if (!cb0)
1024 goto out;
1025
1026 cb0->port_rc = EHEA_BMASK_SET(PXLY_RC_VALID, 1)
1027 | EHEA_BMASK_SET(PXLY_RC_IP_CHKSUM, 1)
1028 | EHEA_BMASK_SET(PXLY_RC_TCP_UDP_CHKSUM, 1)
1029 | EHEA_BMASK_SET(PXLY_RC_VLAN_XTRACT, 1)
1030 | EHEA_BMASK_SET(PXLY_RC_VLAN_TAG_FILTER,
1031 PXLY_RC_VLAN_FILTER)
1032 | EHEA_BMASK_SET(PXLY_RC_JUMBO_FRAME, 1);
1033
18604c54
JBT		 1034 for (i = 0; i < port->num_mcs; i++)
1035 if (use_mcs)
1036 cb0->default_qpn_arr[i] =
1037 port->port_res[i].qp->init_attr.qp_nr;
1038 else
1039 cb0->default_qpn_arr[i] =
1040 port->port_res[0].qp->init_attr.qp_nr;
e542aa6b 1041
7a291083
JBT		 1042 if (netif_msg_ifup(port))
1043 ehea_dump(cb0, sizeof(*cb0), "ehea_configure_port");
1044
1045 mask = EHEA_BMASK_SET(H_PORT_CB0_PRC, 1)
1046 | EHEA_BMASK_SET(H_PORT_CB0_DEFQPNARRAY, 1);
1047
1048 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1049 port->logical_port_id,
1050 H_PORT_CB0, mask, cb0);
1051 ret = -EIO;
1052 if (hret != H_SUCCESS)
1053 goto out_free;
1054
1055 ret = 0;
1056
1057out_free:
1058 kfree(cb0);
1059out:
1060 return ret;
1061}
1062
e542aa6b 1063int ehea_gen_smrs(struct ehea_port_res *pr)
7a291083 1064{
e542aa6b 1065 int ret;
7a291083
JBT		 1066 struct ehea_adapter *adapter = pr->port->adapter;
1067
e542aa6b
JBT		 1068 ret = ehea_gen_smr(adapter, &adapter->mr, &pr->send_mr);
1069 if (ret)
7a291083
JBT		 1070 goto out;
1071
e542aa6b
JBT		 1072 ret = ehea_gen_smr(adapter, &adapter->mr, &pr->recv_mr);
1073 if (ret)
1074 goto out_free;
7a291083
JBT		 1075
1076 return 0;
1077
e542aa6b
JBT		 1078out_free:
1079 ehea_rem_mr(&pr->send_mr);
7a291083 1080out:
e542aa6b 1081 ehea_error("Generating SMRS failed\n");
7a291083
JBT		 1082 return -EIO;
1083}
1084
e542aa6b 1085int ehea_rem_smrs(struct ehea_port_res *pr)
7a291083 1086{
e542aa6b
JBT		 1087 if ((ehea_rem_mr(&pr->send_mr))
1088 || (ehea_rem_mr(&pr->recv_mr)))
1089 return -EIO;
1090 else
1091 return 0;
7a291083
JBT		 1092}
1093
1094static int ehea_init_q_skba(struct ehea_q_skb_arr *q_skba, int max_q_entries)
1095{
1096 int arr_size = sizeof(void*) * max_q_entries;
1097
1098 q_skba->arr = vmalloc(arr_size);
1099 if (!q_skba->arr)
1100 return -ENOMEM;
1101
1102 memset(q_skba->arr, 0, arr_size);
1103
1104 q_skba->len = max_q_entries;
1105 q_skba->index = 0;
1106 q_skba->os_skbs = 0;
1107
1108 return 0;
1109}
1110
1111static int ehea_init_port_res(struct ehea_port *port, struct ehea_port_res *pr,
1112 struct port_res_cfg *pr_cfg, int queue_token)
1113{
1114 struct ehea_adapter *adapter = port->adapter;
1115 enum ehea_eq_type eq_type = EHEA_EQ;
1116 struct ehea_qp_init_attr *init_attr = NULL;
1117 int ret = -EIO;
1118
1119 memset(pr, 0, sizeof(struct ehea_port_res));
1120
1121 pr->port = port;
7a291083
JBT		 1122 spin_lock_init(&pr->xmit_lock);
1123 spin_lock_init(&pr->netif_queue);
1124
18604c54
JBT		 1125 pr->eq = ehea_create_eq(adapter, eq_type, EHEA_MAX_ENTRIES_EQ, 0);
1126 if (!pr->eq) {
1127 ehea_error("create_eq failed (eq)");
7a291083
JBT		 1128 goto out_free;
1129 }
1130
1131 pr->recv_cq = ehea_create_cq(adapter, pr_cfg->max_entries_rcq,
18604c54 1132 pr->eq->fw_handle,
7a291083
JBT		 1133 port->logical_port_id);
1134 if (!pr->recv_cq) {
1135 ehea_error("create_cq failed (cq_recv)");
1136 goto out_free;
1137 }
1138
1139 pr->send_cq = ehea_create_cq(adapter, pr_cfg->max_entries_scq,
18604c54 1140 pr->eq->fw_handle,
7a291083
JBT		 1141 port->logical_port_id);
1142 if (!pr->send_cq) {
1143 ehea_error("create_cq failed (cq_send)");
1144 goto out_free;
1145 }
1146
1147 if (netif_msg_ifup(port))
1148 ehea_info("Send CQ: act_nr_cqes=%d, Recv CQ: act_nr_cqes=%d",
1149 pr->send_cq->attr.act_nr_of_cqes,
1150 pr->recv_cq->attr.act_nr_of_cqes);
1151
1152 init_attr = kzalloc(sizeof(*init_attr), GFP_KERNEL);
1153 if (!init_attr) {
1154 ret = -ENOMEM;
1155 ehea_error("no mem for ehea_qp_init_attr");
1156 goto out_free;
1157 }
1158
1159 init_attr->low_lat_rq1 = 1;
1160 init_attr->signalingtype = 1; /* generate CQE if specified in WQE */
1161 init_attr->rq_count = 3;
1162 init_attr->qp_token = queue_token;
1163 init_attr->max_nr_send_wqes = pr_cfg->max_entries_sq;
1164 init_attr->max_nr_rwqes_rq1 = pr_cfg->max_entries_rq1;
1165 init_attr->max_nr_rwqes_rq2 = pr_cfg->max_entries_rq2;
1166 init_attr->max_nr_rwqes_rq3 = pr_cfg->max_entries_rq3;
1167 init_attr->wqe_size_enc_sq = EHEA_SG_SQ;
1168 init_attr->wqe_size_enc_rq1 = EHEA_SG_RQ1;
1169 init_attr->wqe_size_enc_rq2 = EHEA_SG_RQ2;
1170 init_attr->wqe_size_enc_rq3 = EHEA_SG_RQ3;
1171 init_attr->rq2_threshold = EHEA_RQ2_THRESHOLD;
1172 init_attr->rq3_threshold = EHEA_RQ3_THRESHOLD;
1173 init_attr->port_nr = port->logical_port_id;
1174 init_attr->send_cq_handle = pr->send_cq->fw_handle;
1175 init_attr->recv_cq_handle = pr->recv_cq->fw_handle;
1176 init_attr->aff_eq_handle = port->qp_eq->fw_handle;
1177
1178 pr->qp = ehea_create_qp(adapter, adapter->pd, init_attr);
1179 if (!pr->qp) {
1180 ehea_error("create_qp failed");
1181 ret = -EIO;
1182 goto out_free;
1183 }
1184
1185 if (netif_msg_ifup(port))
1186 ehea_info("QP: qp_nr=%d\n act_nr_snd_wqe=%d\n nr_rwqe_rq1=%d\n "
1187 "nr_rwqe_rq2=%d\n nr_rwqe_rq3=%d", init_attr->qp_nr,
1188 init_attr->act_nr_send_wqes,
1189 init_attr->act_nr_rwqes_rq1,
1190 init_attr->act_nr_rwqes_rq2,
1191 init_attr->act_nr_rwqes_rq3);
1192
1193 ret = ehea_init_q_skba(&pr->sq_skba, init_attr->act_nr_send_wqes + 1);
1194 ret |= ehea_init_q_skba(&pr->rq1_skba, init_attr->act_nr_rwqes_rq1 + 1);
1195 ret |= ehea_init_q_skba(&pr->rq2_skba, init_attr->act_nr_rwqes_rq2 + 1);
1196 ret |= ehea_init_q_skba(&pr->rq3_skba, init_attr->act_nr_rwqes_rq3 + 1);
1197 if (ret)
1198 goto out_free;
1199
1200 pr->swqe_refill_th = init_attr->act_nr_send_wqes / 10;
1201 if (ehea_gen_smrs(pr) != 0) {
1202 ret = -EIO;
1203 goto out_free;
1204 }
18604c54 1205
7a291083
JBT		 1206 atomic_set(&pr->swqe_avail, init_attr->act_nr_send_wqes - 1);
1207
1208 kfree(init_attr);
18604c54
JBT		 1209
1210 pr->d_netdev = alloc_netdev(0, "", ether_setup);
1211 if (!pr->d_netdev)
1212 goto out_free;
1213 pr->d_netdev->priv = pr;
1214 pr->d_netdev->weight = 64;
1215 pr->d_netdev->poll = ehea_poll;
1216 set_bit(__LINK_STATE_START, &pr->d_netdev->state);
1217 strcpy(pr->d_netdev->name, port->netdev->name);
1218
7a291083
JBT		 1219 ret = 0;
1220 goto out;
1221
1222out_free:
1223 kfree(init_attr);
1224 vfree(pr->sq_skba.arr);
1225 vfree(pr->rq1_skba.arr);
1226 vfree(pr->rq2_skba.arr);
1227 vfree(pr->rq3_skba.arr);
1228 ehea_destroy_qp(pr->qp);
1229 ehea_destroy_cq(pr->send_cq);
1230 ehea_destroy_cq(pr->recv_cq);
18604c54 1231 ehea_destroy_eq(pr->eq);
7a291083
JBT		 1232out:
1233 return ret;
1234}
1235
1236static int ehea_clean_portres(struct ehea_port *port, struct ehea_port_res *pr)
1237{
1238 int ret, i;
1239
18604c54
JBT		 1240 free_netdev(pr->d_netdev);
1241
7a291083
JBT		 1242 ret = ehea_destroy_qp(pr->qp);
1243
1244 if (!ret) {
1245 ehea_destroy_cq(pr->send_cq);
1246 ehea_destroy_cq(pr->recv_cq);
18604c54 1247 ehea_destroy_eq(pr->eq);
7a291083
JBT		 1248
1249 for (i = 0; i < pr->rq1_skba.len; i++)
1250 if (pr->rq1_skba.arr[i])
1251 dev_kfree_skb(pr->rq1_skba.arr[i]);
1252
1253 for (i = 0; i < pr->rq2_skba.len; i++)
1254 if (pr->rq2_skba.arr[i])
1255 dev_kfree_skb(pr->rq2_skba.arr[i]);
1256
1257 for (i = 0; i < pr->rq3_skba.len; i++)
1258 if (pr->rq3_skba.arr[i])
1259 dev_kfree_skb(pr->rq3_skba.arr[i]);
1260
1261 for (i = 0; i < pr->sq_skba.len; i++)
1262 if (pr->sq_skba.arr[i])
1263 dev_kfree_skb(pr->sq_skba.arr[i]);
1264
1265 vfree(pr->rq1_skba.arr);
1266 vfree(pr->rq2_skba.arr);
1267 vfree(pr->rq3_skba.arr);
1268 vfree(pr->sq_skba.arr);
1269 ret = ehea_rem_smrs(pr);
1270 }
1271 return ret;
1272}
1273
1274/*
1275 * The write_* functions store information in swqe which is used by
1276 * the hardware to calculate the ip/tcp/udp checksum
1277 */
1278
1279static inline void write_ip_start_end(struct ehea_swqe *swqe,
1280 const struct sk_buff *skb)
1281{
eddc9ec5 1282 swqe->ip_start = skb_network_offset(skb);
c9bdd4b5 1283 swqe->ip_end = (u8)(swqe->ip_start + ip_hdrlen(skb) - 1);
7a291083
JBT		 1284}
1285
1286static inline void write_tcp_offset_end(struct ehea_swqe *swqe,
1287 const struct sk_buff *skb)
1288{
1289 swqe->tcp_offset =
1290 (u8)(swqe->ip_end + 1 + offsetof(struct tcphdr, check));
1291
1292 swqe->tcp_end = (u16)skb->len - 1;
1293}
1294
1295static inline void write_udp_offset_end(struct ehea_swqe *swqe,
1296 const struct sk_buff *skb)
1297{
1298 swqe->tcp_offset =
1299 (u8)(swqe->ip_end + 1 + offsetof(struct udphdr, check));
1300
1301 swqe->tcp_end = (u16)skb->len - 1;
1302}
1303
1304
1305static void write_swqe2_TSO(struct sk_buff *skb,
1306 struct ehea_swqe *swqe, u32 lkey)
1307{
1308 struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry;
1309 u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0];
1310 int skb_data_size = skb->len - skb->data_len;
1311 int headersize;
1312 u64 tmp_addr;
1313
1314 /* Packet is TCP with TSO enabled */
1315 swqe->tx_control |= EHEA_SWQE_TSO;
1316 swqe->mss = skb_shinfo(skb)->gso_size;
1317 /* copy only eth/ip/tcp headers to immediate data and
1318 * the rest of skb->data to sg1entry
1319 */
ab6a5bb6 1320 headersize = ETH_HLEN + ip_hdrlen(skb) + tcp_hdrlen(skb);
7a291083
JBT		 1321
1322 skb_data_size = skb->len - skb->data_len;
1323
1324 if (skb_data_size >= headersize) {
1325 /* copy immediate data */
d626f62b 1326 skb_copy_from_linear_data(skb, imm_data, headersize);
7a291083
JBT		 1327 swqe->immediate_data_length = headersize;
1328
1329 if (skb_data_size > headersize) {
1330 /* set sg1entry data */
1331 sg1entry->l_key = lkey;
1332 sg1entry->len = skb_data_size - headersize;
1333
1334 tmp_addr = (u64)(skb->data + headersize);
44c82152 1335 sg1entry->vaddr = ehea_map_vaddr(tmp_addr);
7a291083
JBT		 1336 swqe->descriptors++;
1337 }
1338 } else
1339 ehea_error("cannot handle fragmented headers");
1340}
1341
1342static void write_swqe2_nonTSO(struct sk_buff *skb,
1343 struct ehea_swqe *swqe, u32 lkey)
1344{
1345 int skb_data_size = skb->len - skb->data_len;
1346 u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0];
1347 struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry;
1348 u64 tmp_addr;
1349
1350 /* Packet is any nonTSO type
1351 *
1352 * Copy as much as possible skb->data to immediate data and
1353 * the rest to sg1entry
1354 */
1355 if (skb_data_size >= SWQE2_MAX_IMM) {
1356 /* copy immediate data */
d626f62b 1357 skb_copy_from_linear_data(skb, imm_data, SWQE2_MAX_IMM);
7a291083
JBT		 1358
1359 swqe->immediate_data_length = SWQE2_MAX_IMM;
1360
1361 if (skb_data_size > SWQE2_MAX_IMM) {
1362 /* copy sg1entry data */
1363 sg1entry->l_key = lkey;
1364 sg1entry->len = skb_data_size - SWQE2_MAX_IMM;
1365 tmp_addr = (u64)(skb->data + SWQE2_MAX_IMM);
44c82152 1366 sg1entry->vaddr = ehea_map_vaddr(tmp_addr);
7a291083
JBT		 1367 swqe->descriptors++;
1368 }
1369 } else {
d626f62b 1370 skb_copy_from_linear_data(skb, imm_data, skb_data_size);
7a291083
JBT		 1371 swqe->immediate_data_length = skb_data_size;
1372 }
1373}
1374
1375static inline void write_swqe2_data(struct sk_buff *skb, struct net_device *dev,
1376 struct ehea_swqe *swqe, u32 lkey)
1377{
1378 struct ehea_vsgentry *sg_list, *sg1entry, *sgentry;
1379 skb_frag_t *frag;
1380 int nfrags, sg1entry_contains_frag_data, i;
1381 u64 tmp_addr;
1382
1383 nfrags = skb_shinfo(skb)->nr_frags;
1384 sg1entry = &swqe->u.immdata_desc.sg_entry;
1385 sg_list = (struct ehea_vsgentry*)&swqe->u.immdata_desc.sg_list;
1386 swqe->descriptors = 0;
1387 sg1entry_contains_frag_data = 0;
1388
1389 if ((dev->features & NETIF_F_TSO) && skb_shinfo(skb)->gso_size)
1390 write_swqe2_TSO(skb, swqe, lkey);
1391 else
1392 write_swqe2_nonTSO(skb, swqe, lkey);
1393
1394 /* write descriptors */
1395 if (nfrags > 0) {
1396 if (swqe->descriptors == 0) {
1397 /* sg1entry not yet used */
1398 frag = &skb_shinfo(skb)->frags[0];
1399
1400 /* copy sg1entry data */
1401 sg1entry->l_key = lkey;
1402 sg1entry->len = frag->size;
1403 tmp_addr = (u64)(page_address(frag->page)
1404 + frag->page_offset);
44c82152 1405 sg1entry->vaddr = ehea_map_vaddr(tmp_addr);
7a291083
JBT		 1406 swqe->descriptors++;
1407 sg1entry_contains_frag_data = 1;
1408 }
1409
1410 for (i = sg1entry_contains_frag_data; i < nfrags; i++) {
1411
1412 frag = &skb_shinfo(skb)->frags[i];
1413 sgentry = &sg_list[i - sg1entry_contains_frag_data];
1414
1415 sgentry->l_key = lkey;
1416 sgentry->len = frag->size;
1417
1418 tmp_addr = (u64)(page_address(frag->page)
1419 + frag->page_offset);
44c82152 1420 sgentry->vaddr = ehea_map_vaddr(tmp_addr);
7a291083
JBT		 1421 swqe->descriptors++;
1422 }
1423 }
1424}
1425
1426static int ehea_broadcast_reg_helper(struct ehea_port *port, u32 hcallid)
1427{
1428 int ret = 0;
1429 u64 hret;
1430 u8 reg_type;
1431
1432 /* De/Register untagged packets */
1433 reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_UNTAGGED;
1434 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1435 port->logical_port_id,
1436 reg_type, port->mac_addr, 0, hcallid);
1437 if (hret != H_SUCCESS) {
f9e29228
TK		 1438 ehea_error("%sregistering bc address failed (tagged)",
1439 hcallid == H_REG_BCMC ? "" : "de");
7a291083
JBT		 1440 ret = -EIO;
1441 goto out_herr;
1442 }
1443
1444 /* De/Register VLAN packets */
1445 reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_VLANID_ALL;
1446 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1447 port->logical_port_id,
1448 reg_type, port->mac_addr, 0, hcallid);
1449 if (hret != H_SUCCESS) {
f9e29228
TK		 1450 ehea_error("%sregistering bc address failed (vlan)",
1451 hcallid == H_REG_BCMC ? "" : "de");
7a291083
JBT		 1452 ret = -EIO;
1453 }
1454out_herr:
1455 return ret;
1456}
1457
1458static int ehea_set_mac_addr(struct net_device *dev, void *sa)
1459{
1460 struct ehea_port *port = netdev_priv(dev);
1461 struct sockaddr *mac_addr = sa;
1462 struct hcp_ehea_port_cb0 *cb0;
1463 int ret;
1464 u64 hret;
1465
1466 if (!is_valid_ether_addr(mac_addr->sa_data)) {
1467 ret = -EADDRNOTAVAIL;
1468 goto out;
1469 }
1470
a1d261c5 1471 cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL);
7a291083
JBT		 1472 if (!cb0) {
1473 ehea_error("no mem for cb0");
1474 ret = -ENOMEM;
1475 goto out;
1476 }
1477
1478 memcpy(&(cb0->port_mac_addr), &(mac_addr->sa_data[0]), ETH_ALEN);
1479
1480 cb0->port_mac_addr = cb0->port_mac_addr >> 16;
1481
1482 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1483 port->logical_port_id, H_PORT_CB0,
1484 EHEA_BMASK_SET(H_PORT_CB0_MAC, 1), cb0);
1485 if (hret != H_SUCCESS) {
1486 ret = -EIO;
1487 goto out_free;
1488 }
1489
1490 memcpy(dev->dev_addr, mac_addr->sa_data, dev->addr_len);
1491
1492 /* Deregister old MAC in pHYP */
1493 ret = ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
1494 if (ret)
1495 goto out_free;
1496
1497 port->mac_addr = cb0->port_mac_addr << 16;
1498
1499 /* Register new MAC in pHYP */
1500 ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
1501 if (ret)
1502 goto out_free;
1503
1504 ret = 0;
1505out_free:
1506 kfree(cb0);
1507out:
1508 return ret;
1509}
1510
1511static void ehea_promiscuous_error(u64 hret, int enable)
1512{
7674a588
TK		 1513 if (hret == H_AUTHORITY)
1514 ehea_info("Hypervisor denied %sabling promiscuous mode",
1515 enable == 1 ? "en" : "dis");
1516 else
1517 ehea_error("failed %sabling promiscuous mode",
1518 enable == 1 ? "en" : "dis");
7a291083
JBT		 1519}
1520
1521static void ehea_promiscuous(struct net_device *dev, int enable)
1522{
1523 struct ehea_port *port = netdev_priv(dev);
1524 struct hcp_ehea_port_cb7 *cb7;
1525 u64 hret;
1526
1527 if ((enable && port->promisc) || (!enable && !port->promisc))
1528 return;
1529
a1d261c5 1530 cb7 = kzalloc(PAGE_SIZE, GFP_ATOMIC);
7a291083
JBT		 1531 if (!cb7) {
1532 ehea_error("no mem for cb7");
1533 goto out;
1534 }
1535
1536 /* Modify Pxs_DUCQPN in CB7 */
1537 cb7->def_uc_qpn = enable == 1 ? port->port_res[0].qp->fw_handle : 0;
1538
1539 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1540 port->logical_port_id,
1541 H_PORT_CB7, H_PORT_CB7_DUCQPN, cb7);
1542 if (hret) {
1543 ehea_promiscuous_error(hret, enable);
1544 goto out;
1545 }
1546
1547 port->promisc = enable;
1548out:
1549 kfree(cb7);
1550 return;
1551}
1552
1553static u64 ehea_multicast_reg_helper(struct ehea_port *port, u64 mc_mac_addr,
1554 u32 hcallid)
1555{
1556 u64 hret;
1557 u8 reg_type;
1558
1559 reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST
1560 | EHEA_BCMC_UNTAGGED;
1561
1562 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1563 port->logical_port_id,
1564 reg_type, mc_mac_addr, 0, hcallid);
1565 if (hret)
1566 goto out;
1567
1568 reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST
1569 | EHEA_BCMC_VLANID_ALL;
1570
1571 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1572 port->logical_port_id,
1573 reg_type, mc_mac_addr, 0, hcallid);
1574out:
1575 return hret;
1576}
1577
1578static int ehea_drop_multicast_list(struct net_device *dev)
1579{
1580 struct ehea_port *port = netdev_priv(dev);
1581 struct ehea_mc_list *mc_entry = port->mc_list;
1582 struct list_head *pos;
1583 struct list_head *temp;
1584 int ret = 0;
1585 u64 hret;
1586
1587 list_for_each_safe(pos, temp, &(port->mc_list->list)) {
1588 mc_entry = list_entry(pos, struct ehea_mc_list, list);
1589
1590 hret = ehea_multicast_reg_helper(port, mc_entry->macaddr,
1591 H_DEREG_BCMC);
1592 if (hret) {
1593 ehea_error("failed deregistering mcast MAC");
1594 ret = -EIO;
1595 }
1596
1597 list_del(pos);
1598 kfree(mc_entry);
1599 }
1600 return ret;
1601}
1602
1603static void ehea_allmulti(struct net_device *dev, int enable)
1604{
1605 struct ehea_port *port = netdev_priv(dev);
1606 u64 hret;
1607
1608 if (!port->allmulti) {
1609 if (enable) {
1610 /* Enable ALLMULTI */
1611 ehea_drop_multicast_list(dev);
1612 hret = ehea_multicast_reg_helper(port, 0, H_REG_BCMC);
1613 if (!hret)
1614 port->allmulti = 1;
1615 else
1616 ehea_error("failed enabling IFF_ALLMULTI");
1617 }
1618 } else
1619 if (!enable) {
1620 /* Disable ALLMULTI */
1621 hret = ehea_multicast_reg_helper(port, 0, H_DEREG_BCMC);
1622 if (!hret)
1623 port->allmulti = 0;
1624 else
1625 ehea_error("failed disabling IFF_ALLMULTI");
1626 }
1627}
1628
1629static void ehea_add_multicast_entry(struct ehea_port* port, u8* mc_mac_addr)
1630{
1631 struct ehea_mc_list *ehea_mcl_entry;
1632 u64 hret;
1633
1e1675cc 1634 ehea_mcl_entry = kzalloc(sizeof(*ehea_mcl_entry), GFP_ATOMIC);
7a291083
JBT		 1635 if (!ehea_mcl_entry) {
1636 ehea_error("no mem for mcl_entry");
1637 return;
1638 }
1639
1640 INIT_LIST_HEAD(&ehea_mcl_entry->list);
1641
1642 memcpy(&ehea_mcl_entry->macaddr, mc_mac_addr, ETH_ALEN);
1643
1644 hret = ehea_multicast_reg_helper(port, ehea_mcl_entry->macaddr,
1645 H_REG_BCMC);
1646 if (!hret)
1647 list_add(&ehea_mcl_entry->list, &port->mc_list->list);
1648 else {
1649 ehea_error("failed registering mcast MAC");
1650 kfree(ehea_mcl_entry);
1651 }
1652}
1653
1654static void ehea_set_multicast_list(struct net_device *dev)
1655{
1656 struct ehea_port *port = netdev_priv(dev);
1657 struct dev_mc_list *k_mcl_entry;
1658 int ret, i;
1659
1660 if (dev->flags & IFF_PROMISC) {
1661 ehea_promiscuous(dev, 1);
1662 return;
1663 }
1664 ehea_promiscuous(dev, 0);
1665
1666 if (dev->flags & IFF_ALLMULTI) {
1667 ehea_allmulti(dev, 1);
1668 return;
1669 }
1670 ehea_allmulti(dev, 0);
1671
1672 if (dev->mc_count) {
1673 ret = ehea_drop_multicast_list(dev);
1674 if (ret) {
1675 /* Dropping the current multicast list failed.
1676 * Enabling ALL_MULTI is the best we can do.
1677 */
1678 ehea_allmulti(dev, 1);
1679 }
1680
1681 if (dev->mc_count > port->adapter->max_mc_mac) {
1682 ehea_info("Mcast registration limit reached (0x%lx). "
1683 "Use ALLMULTI!",
1684 port->adapter->max_mc_mac);
1685 goto out;
1686 }
1687
1688 for (i = 0, k_mcl_entry = dev->mc_list;
1689 i < dev->mc_count;
1690 i++, k_mcl_entry = k_mcl_entry->next) {
1691 ehea_add_multicast_entry(port, k_mcl_entry->dmi_addr);
1692 }
1693 }
1694out:
1695 return;
1696}
1697
1698static int ehea_change_mtu(struct net_device *dev, int new_mtu)
1699{
1700 if ((new_mtu < 68) || (new_mtu > EHEA_MAX_PACKET_SIZE))
1701 return -EINVAL;
1702 dev->mtu = new_mtu;
1703 return 0;
1704}
1705
1706static void ehea_xmit2(struct sk_buff *skb, struct net_device *dev,
1707 struct ehea_swqe *swqe, u32 lkey)
1708{
1709 if (skb->protocol == htons(ETH_P_IP)) {
eddc9ec5 1710 const struct iphdr *iph = ip_hdr(skb);
d1d25aab 1711
7a291083
JBT		 1712 /* IPv4 */
1713 swqe->tx_control |= EHEA_SWQE_CRC
1714 | EHEA_SWQE_IP_CHECKSUM
1715 | EHEA_SWQE_TCP_CHECKSUM
1716 | EHEA_SWQE_IMM_DATA_PRESENT
1717 | EHEA_SWQE_DESCRIPTORS_PRESENT;
1718
1719 write_ip_start_end(swqe, skb);
1720
eddc9ec5 1721 if (iph->protocol == IPPROTO_UDP) {
d1d25aab
JBT		 1722 if ((iph->frag_off & IP_MF)
1723 || (iph->frag_off & IP_OFFSET))
7a291083
JBT		 1724 /* IP fragment, so don't change cs */
1725 swqe->tx_control &= ~EHEA_SWQE_TCP_CHECKSUM;
1726 else
1727 write_udp_offset_end(swqe, skb);
eddc9ec5 1728 } else if (iph->protocol == IPPROTO_TCP) {
7a291083
JBT		 1729 write_tcp_offset_end(swqe, skb);
1730 }
1731
1732 /* icmp (big data) and ip segmentation packets (all other ip
1733 packets) do not require any special handling */
1734
1735 } else {
1736 /* Other Ethernet Protocol */
1737 swqe->tx_control |= EHEA_SWQE_CRC
1738 | EHEA_SWQE_IMM_DATA_PRESENT
1739 | EHEA_SWQE_DESCRIPTORS_PRESENT;
1740 }
1741
1742 write_swqe2_data(skb, dev, swqe, lkey);
1743}
1744
1745static void ehea_xmit3(struct sk_buff *skb, struct net_device *dev,
1746 struct ehea_swqe *swqe)
1747{
1748 int nfrags = skb_shinfo(skb)->nr_frags;
1749 u8 *imm_data = &swqe->u.immdata_nodesc.immediate_data[0];
1750 skb_frag_t *frag;
1751 int i;
1752
1753 if (skb->protocol == htons(ETH_P_IP)) {
eddc9ec5 1754 const struct iphdr *iph = ip_hdr(skb);
d1d25aab 1755
7a291083
JBT		 1756 /* IPv4 */
1757 write_ip_start_end(swqe, skb);
1758
eddc9ec5 1759 if (iph->protocol == IPPROTO_TCP) {
7a291083
JBT		 1760 swqe->tx_control |= EHEA_SWQE_CRC
1761 | EHEA_SWQE_IP_CHECKSUM
1762 | EHEA_SWQE_TCP_CHECKSUM
1763 | EHEA_SWQE_IMM_DATA_PRESENT;
1764
1765 write_tcp_offset_end(swqe, skb);
1766
eddc9ec5 1767 } else if (iph->protocol == IPPROTO_UDP) {
d1d25aab
JBT		 1768 if ((iph->frag_off & IP_MF)
1769 || (iph->frag_off & IP_OFFSET))
7a291083
JBT		 1770 /* IP fragment, so don't change cs */
1771 swqe->tx_control |= EHEA_SWQE_CRC
1772 | EHEA_SWQE_IMM_DATA_PRESENT;
1773 else {
1774 swqe->tx_control |= EHEA_SWQE_CRC
1775 | EHEA_SWQE_IP_CHECKSUM
1776 | EHEA_SWQE_TCP_CHECKSUM
1777 | EHEA_SWQE_IMM_DATA_PRESENT;
1778
1779 write_udp_offset_end(swqe, skb);
1780 }
1781 } else {
1782 /* icmp (big data) and
1783 ip segmentation packets (all other ip packets) */
1784 swqe->tx_control |= EHEA_SWQE_CRC
1785 | EHEA_SWQE_IP_CHECKSUM
1786 | EHEA_SWQE_IMM_DATA_PRESENT;
1787 }
1788 } else {
1789 /* Other Ethernet Protocol */
1790 swqe->tx_control |= EHEA_SWQE_CRC | EHEA_SWQE_IMM_DATA_PRESENT;
1791 }
1792 /* copy (immediate) data */
1793 if (nfrags == 0) {
1794 /* data is in a single piece */
d626f62b 1795 skb_copy_from_linear_data(skb, imm_data, skb->len);
7a291083
JBT		 1796 } else {
1797 /* first copy data from the skb->data buffer ... */
d626f62b
ACM		 1798 skb_copy_from_linear_data(skb, imm_data,
1799 skb->len - skb->data_len);
7a291083
JBT		 1800 imm_data += skb->len - skb->data_len;
1801
1802 /* ... then copy data from the fragments */
1803 for (i = 0; i < nfrags; i++) {
1804 frag = &skb_shinfo(skb)->frags[i];
1805 memcpy(imm_data,
1806 page_address(frag->page) + frag->page_offset,
1807 frag->size);
1808 imm_data += frag->size;
1809 }
1810 }
1811 swqe->immediate_data_length = skb->len;
1812 dev_kfree_skb(skb);
1813}
1814
18604c54
JBT		 1815static inline int ehea_hash_skb(struct sk_buff *skb, int num_qps)
1816{
1817 struct tcphdr *tcp;
1818 u32 tmp;
1819
1820 if ((skb->protocol == htons(ETH_P_IP)) &&
88ca2d07
TK		 1821 (ip_hdr(skb)->protocol == IPPROTO_TCP)) {
1822 tcp = (struct tcphdr*)(skb_network_header(skb) + (ip_hdr(skb)->ihl * 4));
18604c54 1823 tmp = (tcp->source + (tcp->dest << 16)) % 31;
88ca2d07 1824 tmp += ip_hdr(skb)->daddr % 31;
18604c54
JBT		 1825 return tmp % num_qps;
1826 }
1827 else
1828 return 0;
1829}
1830
7a291083
JBT		 1831static int ehea_start_xmit(struct sk_buff *skb, struct net_device *dev)
1832{
1833 struct ehea_port *port = netdev_priv(dev);
1834 struct ehea_swqe *swqe;
1835 unsigned long flags;
1836 u32 lkey;
1837 int swqe_index;
18604c54
JBT		 1838 struct ehea_port_res *pr;
1839
1840 pr = &port->port_res[ehea_hash_skb(skb, port->num_tx_qps)];
1841
18604c54
JBT		 1842 if (!spin_trylock(&pr->xmit_lock))
1843 return NETDEV_TX_BUSY;
1844
1845 if (pr->queue_stopped) {
1846 spin_unlock(&pr->xmit_lock);
1847 return NETDEV_TX_BUSY;
1848 }
7a291083
JBT		 1849
1850 swqe = ehea_get_swqe(pr->qp, &swqe_index);
1851 memset(swqe, 0, SWQE_HEADER_SIZE);
1852 atomic_dec(&pr->swqe_avail);
1853
1854 if (skb->len <= SWQE3_MAX_IMM) {
1855 u32 sig_iv = port->sig_comp_iv;
1856 u32 swqe_num = pr->swqe_id_counter;
1857 ehea_xmit3(skb, dev, swqe);
1858 swqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE3_TYPE)
1859 | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, swqe_num);
1860 if (pr->swqe_ll_count >= (sig_iv - 1)) {
1861 swqe->wr_id |= EHEA_BMASK_SET(EHEA_WR_ID_REFILL,
1862 sig_iv);
1863 swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
1864 pr->swqe_ll_count = 0;
1865 } else
1866 pr->swqe_ll_count += 1;
1867 } else {
1868 swqe->wr_id =
1869 EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE2_TYPE)
1870 | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, pr->swqe_id_counter)
acbddb59 1871 | EHEA_BMASK_SET(EHEA_WR_ID_REFILL, 1)
7a291083
JBT		 1872 | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, pr->sq_skba.index);
1873 pr->sq_skba.arr[pr->sq_skba.index] = skb;
1874
1875 pr->sq_skba.index++;
1876 pr->sq_skba.index &= (pr->sq_skba.len - 1);
1877
1878 lkey = pr->send_mr.lkey;
1879 ehea_xmit2(skb, dev, swqe, lkey);
acbddb59 1880 swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
7a291083
JBT		 1881 }
1882 pr->swqe_id_counter += 1;
1883
1884 if (port->vgrp && vlan_tx_tag_present(skb)) {
1885 swqe->tx_control |= EHEA_SWQE_VLAN_INSERT;
1886 swqe->vlan_tag = vlan_tx_tag_get(skb);
1887 }
1888
1889 if (netif_msg_tx_queued(port)) {
1890 ehea_info("post swqe on QP %d", pr->qp->init_attr.qp_nr);
bff0a55f 1891 ehea_dump(swqe, 512, "swqe");
7a291083
JBT		 1892 }
1893
44c82152
TK		 1894 if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags)))
1895 goto out;
1896
7a291083
JBT		 1897 ehea_post_swqe(pr->qp, swqe);
1898 pr->tx_packets++;
1899
1900 if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) {
1901 spin_lock_irqsave(&pr->netif_queue, flags);
1902 if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) {
acbddb59 1903 pr->p_stats.queue_stopped++;
7a291083
JBT		 1904 netif_stop_queue(dev);
1905 pr->queue_stopped = 1;
1906 }
1907 spin_unlock_irqrestore(&pr->netif_queue, flags);
1908 }
1909 dev->trans_start = jiffies;
1910 spin_unlock(&pr->xmit_lock);
44c82152 1911out:
7a291083
JBT		 1912 return NETDEV_TX_OK;
1913}
1914
1915static void ehea_vlan_rx_register(struct net_device *dev,
1916 struct vlan_group *grp)
1917{
1918 struct ehea_port *port = netdev_priv(dev);
1919 struct ehea_adapter *adapter = port->adapter;
1920 struct hcp_ehea_port_cb1 *cb1;
1921 u64 hret;
1922
1923 port->vgrp = grp;
1924
a1d261c5 1925 cb1 = kzalloc(PAGE_SIZE, GFP_KERNEL);
7a291083
JBT		 1926 if (!cb1) {
1927 ehea_error("no mem for cb1");
1928 goto out;
1929 }
1930
dec590c1 1931 memset(cb1->vlan_filter, 0, sizeof(cb1->vlan_filter));
7a291083
JBT		 1932
1933 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
1934 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
1935 if (hret != H_SUCCESS)
1936 ehea_error("modify_ehea_port failed");
1937
1938 kfree(cb1);
1939out:
1940 return;
1941}
1942
1943static void ehea_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
1944{
1945 struct ehea_port *port = netdev_priv(dev);
1946 struct ehea_adapter *adapter = port->adapter;
1947 struct hcp_ehea_port_cb1 *cb1;
1948 int index;
1949 u64 hret;
1950
a1d261c5 1951 cb1 = kzalloc(PAGE_SIZE, GFP_KERNEL);
7a291083
JBT		 1952 if (!cb1) {
1953 ehea_error("no mem for cb1");
1954 goto out;
1955 }
1956
1957 hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
1958 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
1959 if (hret != H_SUCCESS) {
1960 ehea_error("query_ehea_port failed");
1961 goto out;
1962 }
1963
1964 index = (vid / 64);
dec590c1 1965 cb1->vlan_filter[index] |= ((u64)(0x8000000000000000 >> (vid & 0x3F)));
7a291083
JBT		 1966
1967 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
1968 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
1969 if (hret != H_SUCCESS)
1970 ehea_error("modify_ehea_port failed");
1971out:
1972 kfree(cb1);
1973 return;
1974}
1975
1976static void ehea_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
1977{
1978 struct ehea_port *port = netdev_priv(dev);
1979 struct ehea_adapter *adapter = port->adapter;
1980 struct hcp_ehea_port_cb1 *cb1;
1981 int index;
1982 u64 hret;
1983
5c15bdec 1984 vlan_group_set_device(port->vgrp, vid, NULL);
7a291083 1985
a1d261c5 1986 cb1 = kzalloc(PAGE_SIZE, GFP_KERNEL);
7a291083
JBT		 1987 if (!cb1) {
1988 ehea_error("no mem for cb1");
1989 goto out;
1990 }
1991
1992 hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
1993 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
1994 if (hret != H_SUCCESS) {
1995 ehea_error("query_ehea_port failed");
1996 goto out;
1997 }
1998
1999 index = (vid / 64);
dec590c1 2000 cb1->vlan_filter[index] &= ~((u64)(0x8000000000000000 >> (vid & 0x3F)));
7a291083
JBT		 2001
2002 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
2003 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2004 if (hret != H_SUCCESS)
2005 ehea_error("modify_ehea_port failed");
2006out:
2007 kfree(cb1);
2008 return;
2009}
2010
2011int ehea_activate_qp(struct ehea_adapter *adapter, struct ehea_qp *qp)
2012{
2013 int ret = -EIO;
2014 u64 hret;
2015 u16 dummy16 = 0;
2016 u64 dummy64 = 0;
2017 struct hcp_modify_qp_cb0* cb0;
2018
a1d261c5 2019 cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL);
7a291083
JBT		 2020 if (!cb0) {
2021 ret = -ENOMEM;
2022 goto out;
2023 }
2024
2025 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2026 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2027 if (hret != H_SUCCESS) {
2028 ehea_error("query_ehea_qp failed (1)");
2029 goto out;
2030 }
2031
2032 cb0->qp_ctl_reg = H_QP_CR_STATE_INITIALIZED;
2033 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2034 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2035 &dummy64, &dummy64, &dummy16, &dummy16);
2036 if (hret != H_SUCCESS) {
2037 ehea_error("modify_ehea_qp failed (1)");
2038 goto out;
2039 }
2040
2041 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2042 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2043 if (hret != H_SUCCESS) {
2044 ehea_error("query_ehea_qp failed (2)");
2045 goto out;
2046 }
2047
2048 cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_INITIALIZED;
2049 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2050 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2051 &dummy64, &dummy64, &dummy16, &dummy16);
2052 if (hret != H_SUCCESS) {
2053 ehea_error("modify_ehea_qp failed (2)");
2054 goto out;
2055 }
2056
2057 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2058 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2059 if (hret != H_SUCCESS) {
2060 ehea_error("query_ehea_qp failed (3)");
2061 goto out;
2062 }
2063
2064 cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_RDY2SND;
2065 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2066 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2067 &dummy64, &dummy64, &dummy16, &dummy16);
2068 if (hret != H_SUCCESS) {
2069 ehea_error("modify_ehea_qp failed (3)");
2070 goto out;
2071 }
2072
2073 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2074 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2075 if (hret != H_SUCCESS) {
2076 ehea_error("query_ehea_qp failed (4)");
2077 goto out;
2078 }
2079
2080 ret = 0;
2081out:
2082 kfree(cb0);
2083 return ret;
2084}
2085
2086static int ehea_port_res_setup(struct ehea_port *port, int def_qps,
2087 int add_tx_qps)
2088{
2089 int ret, i;
2090 struct port_res_cfg pr_cfg, pr_cfg_small_rx;
2091 enum ehea_eq_type eq_type = EHEA_EQ;
2092
2093 port->qp_eq = ehea_create_eq(port->adapter, eq_type,
2094 EHEA_MAX_ENTRIES_EQ, 1);
2095 if (!port->qp_eq) {
2096 ret = -EINVAL;
2097 ehea_error("ehea_create_eq failed (qp_eq)");
2098 goto out_kill_eq;
2099 }
2100
2101 pr_cfg.max_entries_rcq = rq1_entries + rq2_entries + rq3_entries;
18604c54 2102 pr_cfg.max_entries_scq = sq_entries * 2;
7a291083
JBT		 2103 pr_cfg.max_entries_sq = sq_entries;
2104 pr_cfg.max_entries_rq1 = rq1_entries;
2105 pr_cfg.max_entries_rq2 = rq2_entries;
2106 pr_cfg.max_entries_rq3 = rq3_entries;
2107
2108 pr_cfg_small_rx.max_entries_rcq = 1;
2109 pr_cfg_small_rx.max_entries_scq = sq_entries;
2110 pr_cfg_small_rx.max_entries_sq = sq_entries;
2111 pr_cfg_small_rx.max_entries_rq1 = 1;
2112 pr_cfg_small_rx.max_entries_rq2 = 1;
2113 pr_cfg_small_rx.max_entries_rq3 = 1;
2114
2115 for (i = 0; i < def_qps; i++) {
2116 ret = ehea_init_port_res(port, &port->port_res[i], &pr_cfg, i);
2117 if (ret)
2118 goto out_clean_pr;
2119 }
2120 for (i = def_qps; i < def_qps + add_tx_qps; i++) {
2121 ret = ehea_init_port_res(port, &port->port_res[i],
2122 &pr_cfg_small_rx, i);
2123 if (ret)
2124 goto out_clean_pr;
2125 }
2126
2127 return 0;
2128
2129out_clean_pr:
2130 while (--i >= 0)
2131 ehea_clean_portres(port, &port->port_res[i]);
2132
2133out_kill_eq:
2134 ehea_destroy_eq(port->qp_eq);
2135 return ret;
2136}
2137
2138static int ehea_clean_all_portres(struct ehea_port *port)
2139{
2140 int ret = 0;
2141 int i;
2142
2143 for(i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
2144 ret |= ehea_clean_portres(port, &port->port_res[i]);
2145
2146 ret |= ehea_destroy_eq(port->qp_eq);
2147
2148 return ret;
2149}
2150
1211bb6d
TK		 2151static void ehea_remove_adapter_mr (struct ehea_adapter *adapter)
2152{
2153 int i;
2154
2155 for (i=0; i < EHEA_MAX_PORTS; i++)
2156 if (adapter->port[i])
2157 return;
2158
2159 ehea_rem_mr(&adapter->mr);
2160}
2161
2162static int ehea_add_adapter_mr (struct ehea_adapter *adapter)
2163{
2164 int i;
2165
2166 for (i=0; i < EHEA_MAX_PORTS; i++)
2167 if (adapter->port[i])
2168 return 0;
2169
2170 return ehea_reg_kernel_mr(adapter, &adapter->mr);
2171}
2172
7a291083
JBT		 2173static int ehea_up(struct net_device *dev)
2174{
2175 int ret, i;
2176 struct ehea_port *port = netdev_priv(dev);
7a291083
JBT		 2177
2178 if (port->state == EHEA_PORT_UP)
2179 return 0;
2180
2181 ret = ehea_port_res_setup(port, port->num_def_qps,
2182 port->num_add_tx_qps);
2183 if (ret) {
2184 ehea_error("port_res_failed");
2185 goto out;
2186 }
2187
2188 /* Set default QP for this port */
2189 ret = ehea_configure_port(port);
2190 if (ret) {
2191 ehea_error("ehea_configure_port failed. ret:%d", ret);
2192 goto out_clean_pr;
2193 }
2194
7a291083
JBT		 2195 ret = ehea_reg_interrupts(dev);
2196 if (ret) {
f9e29228
TK		 2197 ehea_error("reg_interrupts failed. ret:%d", ret);
2198 goto out_clean_pr;
7a291083
JBT		 2199 }
2200
2201 for(i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
2202 ret = ehea_activate_qp(port->adapter, port->port_res[i].qp);
2203 if (ret) {
2204 ehea_error("activate_qp failed");
2205 goto out_free_irqs;
2206 }
2207 }
2208
2209 for(i = 0; i < port->num_def_qps; i++) {
2210 ret = ehea_fill_port_res(&port->port_res[i]);
2211 if (ret) {
2212 ehea_error("out_free_irqs");
2213 goto out_free_irqs;
2214 }
2215 }
2216
2217 ret = 0;
2218 port->state = EHEA_PORT_UP;
2219 goto out;
2220
2221out_free_irqs:
2222 ehea_free_interrupts(dev);
2223
7a291083
JBT		 2224out_clean_pr:
2225 ehea_clean_all_portres(port);
2226out:
44c82152
TK		 2227 if (ret)
2228 ehea_info("Failed starting %s. ret=%i", dev->name, ret);
2229
7a291083
JBT		 2230 return ret;
2231}
2232
2233static int ehea_open(struct net_device *dev)
2234{
2235 int ret;
2236 struct ehea_port *port = netdev_priv(dev);
2237
2238 down(&port->port_lock);
2239
2240 if (netif_msg_ifup(port))
2241 ehea_info("enabling port %s", dev->name);
2242
2243 ret = ehea_up(dev);
2244 if (!ret)
2245 netif_start_queue(dev);
2246
2247 up(&port->port_lock);
2248
2249 return ret;
2250}
2251
2252static int ehea_down(struct net_device *dev)
2253{
2254 int ret, i;
2255 struct ehea_port *port = netdev_priv(dev);
2256
2257 if (port->state == EHEA_PORT_DOWN)
2258 return 0;
2259
2260 ehea_drop_multicast_list(dev);
2261 ehea_free_interrupts(dev);
2262
18604c54 2263 for (i = 0; i < port->num_def_qps; i++)
e542aa6b 2264 while (test_bit(__LINK_STATE_RX_SCHED,
18604c54
JBT		 2265 &port->port_res[i].d_netdev->state))
2266 msleep(1);
7a291083 2267
7a291083 2268 port->state = EHEA_PORT_DOWN;
44c82152
TK		 2269
2270 ret = ehea_clean_all_portres(port);
2271 if (ret)
2272 ehea_info("Failed freeing resources for %s. ret=%i",
2273 dev->name, ret);
2274
7a291083
JBT		 2275 return ret;
2276}
2277
2278static int ehea_stop(struct net_device *dev)
2279{
2280 int ret;
2281 struct ehea_port *port = netdev_priv(dev);
2282
2283 if (netif_msg_ifdown(port))
2284 ehea_info("disabling port %s", dev->name);
2285
2286 flush_workqueue(port->adapter->ehea_wq);
2287 down(&port->port_lock);
2288 netif_stop_queue(dev);
2289 ret = ehea_down(dev);
2290 up(&port->port_lock);
2291 return ret;
2292}
2293
c4028958 2294static void ehea_reset_port(struct work_struct *work)
7a291083
JBT		 2295{
2296 int ret;
c4028958
DH		 2297 struct ehea_port *port =
2298 container_of(work, struct ehea_port, reset_task);
2299 struct net_device *dev = port->netdev;
7a291083
JBT		 2300
2301 port->resets++;
2302 down(&port->port_lock);
2303 netif_stop_queue(dev);
2304 netif_poll_disable(dev);
2305
44c82152 2306 ehea_down(dev);
7a291083
JBT		 2307
2308 ret = ehea_up(dev);
44c82152 2309 if (ret)
7a291083 2310 goto out;
7a291083
JBT		 2311
2312 if (netif_msg_timer(port))
2313 ehea_info("Device %s resetted successfully", dev->name);
2314
2315 netif_poll_enable(dev);
2316 netif_wake_queue(dev);
2317out:
2318 up(&port->port_lock);
2319 return;
2320}
2321
44c82152
TK		 2322static void ehea_rereg_mrs(struct work_struct *work)
2323{
2324 int ret, i;
2325 struct ehea_adapter *adapter;
2326
2327 ehea_info("LPAR memory enlarged - re-initializing driver");
2328
2329 list_for_each_entry(adapter, &adapter_list, list)
2330 if (adapter->active_ports) {
2331 /* Shutdown all ports */
2332 for (i = 0; i < EHEA_MAX_PORTS; i++) {
2333 struct ehea_port *port = adapter->port[i];
2334
2335 if (port) {
2336 struct net_device *dev = port->netdev;
2337
2338 if (dev->flags & IFF_UP) {
2339 ehea_info("stopping %s",
2340 dev->name);
2341 down(&port->port_lock);
2342 netif_stop_queue(dev);
2343 netif_poll_disable(dev);
2344 ehea_down(dev);
2345 up(&port->port_lock);
2346 }
2347 }
2348 }
2349
2350 /* Unregister old memory region */
2351 ret = ehea_rem_mr(&adapter->mr);
2352 if (ret) {
2353 ehea_error("unregister MR failed - driver"
2354 " inoperable!");
2355 goto out;
2356 }
2357 }
2358
2359 ehea_destroy_busmap();
2360
2361 ret = ehea_create_busmap();
2362 if (ret)
2363 goto out;
2364
2365 clear_bit(__EHEA_STOP_XFER, &ehea_driver_flags);
2366
2367 list_for_each_entry(adapter, &adapter_list, list)
2368 if (adapter->active_ports) {
2369 /* Register new memory region */
2370 ret = ehea_reg_kernel_mr(adapter, &adapter->mr);
2371 if (ret) {
2372 ehea_error("register MR failed - driver"
2373 " inoperable!");
2374 goto out;
2375 }
2376
2377 /* Restart all ports */
2378 for (i = 0; i < EHEA_MAX_PORTS; i++) {
2379 struct ehea_port *port = adapter->port[i];
2380
2381 if (port) {
2382 struct net_device *dev = port->netdev;
2383
2384 if (dev->flags & IFF_UP) {
2385 ehea_info("restarting %s",
2386 dev->name);
2387 down(&port->port_lock);
2388
2389 ret = ehea_up(dev);
2390 if (!ret) {
2391 netif_poll_enable(dev);
2392 netif_wake_queue(dev);
2393 }
2394
2395 up(&port->port_lock);
2396 }
2397 }
2398 }
2399 }
2400out:
2401 return;
2402}
2403
7a291083
JBT		 2404static void ehea_tx_watchdog(struct net_device *dev)
2405{
2406 struct ehea_port *port = netdev_priv(dev);
2407
2408 if (netif_carrier_ok(dev))
2409 queue_work(port->adapter->ehea_wq, &port->reset_task);
2410}
2411
2412int ehea_sense_adapter_attr(struct ehea_adapter *adapter)
2413{
2414 struct hcp_query_ehea *cb;
2415 u64 hret;
2416 int ret;
2417
a1d261c5 2418 cb = kzalloc(PAGE_SIZE, GFP_KERNEL);
7a291083
JBT		 2419 if (!cb) {
2420 ret = -ENOMEM;
2421 goto out;
2422 }
2423
2424 hret = ehea_h_query_ehea(adapter->handle, cb);
2425
2426 if (hret != H_SUCCESS) {
2427 ret = -EIO;
2428 goto out_herr;
2429 }
2430
7a291083
JBT		 2431 adapter->max_mc_mac = cb->max_mc_mac - 1;
2432 ret = 0;
2433
2434out_herr:
2435 kfree(cb);
2436out:
2437 return ret;
2438}
2439
1acf2318 2440int ehea_get_jumboframe_status(struct ehea_port *port, int *jumbo)
7a291083 2441{
7a291083 2442 struct hcp_ehea_port_cb4 *cb4;
1acf2318
JBT		 2443 u64 hret;
2444 int ret = 0;
7a291083 2445
1acf2318 2446 *jumbo = 0;
7a291083 2447
1acf2318 2448 /* (Try to) enable *jumbo frames */
a1d261c5 2449 cb4 = kzalloc(PAGE_SIZE, GFP_KERNEL);
7a291083
JBT		 2450 if (!cb4) {
2451 ehea_error("no mem for cb4");
1acf2318
JBT		 2452 ret = -ENOMEM;
2453 goto out;
7a291083 2454 } else {
1acf2318 2455 hret = ehea_h_query_ehea_port(port->adapter->handle,
9c750b7d
TK		 2456 port->logical_port_id,
2457 H_PORT_CB4,
2458 H_PORT_CB4_JUMBO, cb4);
9c750b7d
TK		 2459 if (hret == H_SUCCESS) {
2460 if (cb4->jumbo_frame)
1acf2318 2461 *jumbo = 1;
9c750b7d
TK		 2462 else {
2463 cb4->jumbo_frame = 1;
1acf2318
JBT		 2464 hret = ehea_h_modify_ehea_port(port->adapter->
2465 handle,
9c750b7d 2466 port->
1acf2318 2467 logical_port_id,
9c750b7d
TK		 2468 H_PORT_CB4,
2469 H_PORT_CB4_JUMBO,
2470 cb4);
2471 if (hret == H_SUCCESS)
1acf2318 2472 *jumbo = 1;
9c750b7d 2473 }
1acf2318
JBT		 2474 } else
2475 ret = -EINVAL;
2476
7a291083
JBT		 2477 kfree(cb4);
2478 }
1acf2318
JBT		 2479out:
2480 return ret;
2481}
2482
2483static ssize_t ehea_show_port_id(struct device *dev,
2484 struct device_attribute *attr, char *buf)
2485{
2486 struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev);
2487 return sprintf(buf, "0x%X", port->logical_port_id);
2488}
2489
2490static DEVICE_ATTR(log_port_id, S_IRUSR | S_IRGRP | S_IROTH, ehea_show_port_id,
2491 NULL);
2492
2493static void __devinit logical_port_release(struct device *dev)
2494{
2495 struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev);
2496 of_node_put(port->ofdev.node);
2497}
2498
d1dea38d 2499static int ehea_driver_sysfs_add(struct device *dev,
d1d25aab 2500 struct device_driver *driver)
d1dea38d
TK		 2501{
2502 int ret;
2503
2504 ret = sysfs_create_link(&driver->kobj, &dev->kobj,
2505 kobject_name(&dev->kobj));
2506 if (ret == 0) {
2507 ret = sysfs_create_link(&dev->kobj, &driver->kobj,
2508 "driver");
2509 if (ret)
2510 sysfs_remove_link(&driver->kobj,
2511 kobject_name(&dev->kobj));
2512 }
2513 return ret;
2514}
2515
2516static void ehea_driver_sysfs_remove(struct device *dev,
d1d25aab 2517 struct device_driver *driver)
d1dea38d
TK		 2518{
2519 struct device_driver *drv = driver;
2520
2521 if (drv) {
2522 sysfs_remove_link(&drv->kobj, kobject_name(&dev->kobj));
2523 sysfs_remove_link(&dev->kobj, "driver");
2524 }
2525}
2526
1acf2318
JBT		 2527static struct device *ehea_register_port(struct ehea_port *port,
2528 struct device_node *dn)
2529{
2530 int ret;
2531
2532 port->ofdev.node = of_node_get(dn);
2533 port->ofdev.dev.parent = &port->adapter->ebus_dev->ofdev.dev;
d1dea38d 2534 port->ofdev.dev.bus = &ibmebus_bus_type;
1acf2318 2535
d1dea38d 2536 sprintf(port->ofdev.dev.bus_id, "port%d", port_name_cnt++);
1acf2318
JBT		 2537 port->ofdev.dev.release = logical_port_release;
2538
2539 ret = of_device_register(&port->ofdev);
2540 if (ret) {
2541 ehea_error("failed to register device. ret=%d", ret);
2542 goto out;
2543 }
2544
2545 ret = device_create_file(&port->ofdev.dev, &dev_attr_log_port_id);
d1d25aab 2546 if (ret) {
1acf2318
JBT		 2547 ehea_error("failed to register attributes, ret=%d", ret);
2548 goto out_unreg_of_dev;
2549 }
e542aa6b 2550
d1dea38d
TK		 2551 ret = ehea_driver_sysfs_add(&port->ofdev.dev, &ehea_driver.driver);
2552 if (ret) {
2553 ehea_error("failed to register sysfs driver link");
2554 goto out_rem_dev_file;
2555 }
2556
1acf2318
JBT		 2557 return &port->ofdev.dev;
2558
d1dea38d
TK		 2559out_rem_dev_file:
2560 device_remove_file(&port->ofdev.dev, &dev_attr_log_port_id);
1acf2318
JBT		 2561out_unreg_of_dev:
2562 of_device_unregister(&port->ofdev);
2563out:
2564 return NULL;
2565}
2566
2567static void ehea_unregister_port(struct ehea_port *port)
2568{
d1dea38d 2569 ehea_driver_sysfs_remove(&port->ofdev.dev, &ehea_driver.driver);
1acf2318
JBT		 2570 device_remove_file(&port->ofdev.dev, &dev_attr_log_port_id);
2571 of_device_unregister(&port->ofdev);
2572}
2573
2574struct ehea_port *ehea_setup_single_port(struct ehea_adapter *adapter,
2575 u32 logical_port_id,
2576 struct device_node *dn)
2577{
2578 int ret;
2579 struct net_device *dev;
2580 struct ehea_port *port;
2581 struct device *port_dev;
2582 int jumbo;
2583
2584 /* allocate memory for the port structures */
2585 dev = alloc_etherdev(sizeof(struct ehea_port));
2586
2587 if (!dev) {
2588 ehea_error("no mem for net_device");
2589 ret = -ENOMEM;
2590 goto out_err;
2591 }
2592
2593 port = netdev_priv(dev);
2594
2595 sema_init(&port->port_lock, 1);
2596 port->state = EHEA_PORT_DOWN;
2597 port->sig_comp_iv = sq_entries / 10;
2598
2599 port->adapter = adapter;
2600 port->netdev = dev;
2601 port->logical_port_id = logical_port_id;
2602
2603 port->msg_enable = netif_msg_init(msg_level, EHEA_MSG_DEFAULT);
2604
2605 port->mc_list = kzalloc(sizeof(struct ehea_mc_list), GFP_KERNEL);
2606 if (!port->mc_list) {
2607 ret = -ENOMEM;
2608 goto out_free_ethdev;
2609 }
2610
2611 INIT_LIST_HEAD(&port->mc_list->list);
2612
2613 ret = ehea_sense_port_attr(port);
2614 if (ret)
2615 goto out_free_mc_list;
2616
2617 port_dev = ehea_register_port(port, dn);
2618 if (!port_dev)
2619 goto out_free_mc_list;
2620
2621 SET_NETDEV_DEV(dev, port_dev);
7a291083
JBT		 2622
2623 /* initialize net_device structure */
2624 SET_MODULE_OWNER(dev);
2625
2626 memcpy(dev->dev_addr, &port->mac_addr, ETH_ALEN);
2627
2628 dev->open = ehea_open;
2629 dev->poll = ehea_poll;
2630 dev->weight = 64;
2631 dev->stop = ehea_stop;
2632 dev->hard_start_xmit = ehea_start_xmit;
2633 dev->get_stats = ehea_get_stats;
2634 dev->set_multicast_list = ehea_set_multicast_list;
2635 dev->set_mac_address = ehea_set_mac_addr;
2636 dev->change_mtu = ehea_change_mtu;
2637 dev->vlan_rx_register = ehea_vlan_rx_register;
2638 dev->vlan_rx_add_vid = ehea_vlan_rx_add_vid;
2639 dev->vlan_rx_kill_vid = ehea_vlan_rx_kill_vid;
2640 dev->features = NETIF_F_SG | NETIF_F_FRAGLIST | NETIF_F_TSO
2641 | NETIF_F_HIGHDMA | NETIF_F_HW_CSUM | NETIF_F_HW_VLAN_TX
2642 | NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_FILTER
2643 | NETIF_F_LLTX;
2644 dev->tx_timeout = &ehea_tx_watchdog;
2645 dev->watchdog_timeo = EHEA_WATCH_DOG_TIMEOUT;
2646
c4028958 2647 INIT_WORK(&port->reset_task, ehea_reset_port);
7a291083 2648
f9e29228
TK		 2649 ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
2650 if (ret) {
2651 ret = -EIO;
2652 goto out_unreg_port;
2653 }
2654
7a291083
JBT		 2655 ehea_set_ethtool_ops(dev);
2656
2657 ret = register_netdev(dev);
2658 if (ret) {
2659 ehea_error("register_netdev failed. ret=%d", ret);
f9e29228 2660 goto out_dereg_bc;
7a291083
JBT		 2661 }
2662
1acf2318 2663 ret = ehea_get_jumboframe_status(port, &jumbo);
e542aa6b 2664 if (ret)
1acf2318
JBT		 2665 ehea_error("failed determining jumbo frame status for %s",
2666 port->netdev->name);
2667
9c750b7d
TK		 2668 ehea_info("%s: Jumbo frames are %sabled", dev->name,
2669 jumbo == 1 ? "en" : "dis");
2670
44c82152
TK		 2671 adapter->active_ports++;
2672
1acf2318 2673 return port;
7a291083 2674
f9e29228
TK		 2675out_dereg_bc:
2676 ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
2677
1acf2318
JBT		 2678out_unreg_port:
2679 ehea_unregister_port(port);
2680
2681out_free_mc_list:
7a291083 2682 kfree(port->mc_list);
1acf2318
JBT		 2683
2684out_free_ethdev:
2685 free_netdev(dev);
2686
2687out_err:
2688 ehea_error("setting up logical port with id=%d failed, ret=%d",
2689 logical_port_id, ret);
2690 return NULL;
2691}
2692
2693static void ehea_shutdown_single_port(struct ehea_port *port)
2694{
2695 unregister_netdev(port->netdev);
2696 ehea_unregister_port(port);
f9e29228 2697 ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
1acf2318
JBT		 2698 kfree(port->mc_list);
2699 free_netdev(port->netdev);
44c82152 2700 port->adapter->active_ports--;
7a291083
JBT		 2701}
2702
2703static int ehea_setup_ports(struct ehea_adapter *adapter)
2704{
1acf2318
JBT		 2705 struct device_node *lhea_dn;
2706 struct device_node *eth_dn = NULL;
d1d25aab 2707
9f9a3b8a 2708 const u32 *dn_log_port_id;
1acf2318
JBT		 2709 int i = 0;
2710
2711 lhea_dn = adapter->ebus_dev->ofdev.node;
1eef4e04 2712 while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) {
e542aa6b 2713
40cd3a45 2714 dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no",
d1d25aab 2715 NULL);
1acf2318
JBT		 2716 if (!dn_log_port_id) {
2717 ehea_error("bad device node: eth_dn name=%s",
2718 eth_dn->full_name);
2719 continue;
2720 }
7a291083 2721
1211bb6d
TK		 2722 if (ehea_add_adapter_mr(adapter)) {
2723 ehea_error("creating MR failed");
2724 of_node_put(eth_dn);
2725 return -EIO;
2726 }
2727
1acf2318
JBT		 2728 adapter->port[i] = ehea_setup_single_port(adapter,
2729 *dn_log_port_id,
2730 eth_dn);
7a291083 2731 if (adapter->port[i])
1acf2318 2732 ehea_info("%s -> logical port id #%d",
e542aa6b 2733 adapter->port[i]->netdev->name,
1acf2318 2734 *dn_log_port_id);
1211bb6d
TK		 2735 else
2736 ehea_remove_adapter_mr(adapter);
2737
1acf2318 2738 i++;
1eef4e04 2739 };
7a291083 2740
1211bb6d 2741 return 0;
1acf2318
JBT		 2742}
2743
e542aa6b
JBT		 2744static struct device_node *ehea_get_eth_dn(struct ehea_adapter *adapter,
2745 u32 logical_port_id)
1acf2318
JBT		 2746{
2747 struct device_node *lhea_dn;
2748 struct device_node *eth_dn = NULL;
9f9a3b8a 2749 const u32 *dn_log_port_id;
1acf2318
JBT		 2750
2751 lhea_dn = adapter->ebus_dev->ofdev.node;
1eef4e04 2752 while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) {
e542aa6b 2753
40cd3a45 2754 dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no",
d1d25aab 2755 NULL);
1acf2318
JBT		 2756 if (dn_log_port_id)
2757 if (*dn_log_port_id == logical_port_id)
2758 return eth_dn;
1eef4e04 2759 };
1acf2318
JBT		 2760
2761 return NULL;
2762}
2763
2764static ssize_t ehea_probe_port(struct device *dev,
2765 struct device_attribute *attr,
2766 const char *buf, size_t count)
2767{
2768 struct ehea_adapter *adapter = dev->driver_data;
2769 struct ehea_port *port;
2770 struct device_node *eth_dn = NULL;
2771 int i;
2772
2773 u32 logical_port_id;
2774
2775 sscanf(buf, "%X", &logical_port_id);
2776
2777 port = ehea_get_port(adapter, logical_port_id);
2778
2779 if (port) {
2780 ehea_info("adding port with logical port id=%d failed. port "
2781 "already configured as %s.", logical_port_id,
2782 port->netdev->name);
2783 return -EINVAL;
7a291083 2784 }
e542aa6b 2785
1acf2318 2786 eth_dn = ehea_get_eth_dn(adapter, logical_port_id);
7a291083 2787
1acf2318
JBT		 2788 if (!eth_dn) {
2789 ehea_info("no logical port with id %d found", logical_port_id);
2790 return -EINVAL;
2791 }
e542aa6b 2792
1211bb6d
TK		 2793 if (ehea_add_adapter_mr(adapter)) {
2794 ehea_error("creating MR failed");
2795 return -EIO;
2796 }
2797
1acf2318 2798 port = ehea_setup_single_port(adapter, logical_port_id, eth_dn);
7a291083 2799
1eef4e04
JBT		 2800 of_node_put(eth_dn);
2801
1acf2318
JBT		 2802 if (port) {
2803 for (i=0; i < EHEA_MAX_PORTS; i++)
2804 if (!adapter->port[i]) {
2805 adapter->port[i] = port;
2806 break;
2807 }
7a291083 2808
1acf2318
JBT		 2809 ehea_info("added %s (logical port id=%d)", port->netdev->name,
2810 logical_port_id);
1211bb6d
TK		 2811 } else {
2812 ehea_remove_adapter_mr(adapter);
e542aa6b 2813 return -EIO;
1211bb6d 2814 }
7a291083 2815
1acf2318
JBT		 2816 return (ssize_t) count;
2817}
2818
2819static ssize_t ehea_remove_port(struct device *dev,
2820 struct device_attribute *attr,
2821 const char *buf, size_t count)
2822{
2823 struct ehea_adapter *adapter = dev->driver_data;
2824 struct ehea_port *port;
2825 int i;
2826 u32 logical_port_id;
2827
2828 sscanf(buf, "%X", &logical_port_id);
2829
2830 port = ehea_get_port(adapter, logical_port_id);
2831
2832 if (port) {
2833 ehea_info("removed %s (logical port id=%d)", port->netdev->name,
2834 logical_port_id);
2835
2836 ehea_shutdown_single_port(port);
2837
2838 for (i=0; i < EHEA_MAX_PORTS; i++)
2839 if (adapter->port[i] == port) {
2840 adapter->port[i] = NULL;
2841 break;
2842 }
2843 } else {
2844 ehea_error("removing port with logical port id=%d failed. port "
2845 "not configured.", logical_port_id);
2846 return -EINVAL;
2847 }
2848
1211bb6d
TK		 2849 ehea_remove_adapter_mr(adapter);
2850
1acf2318
JBT		 2851 return (ssize_t) count;
2852}
2853
2854static DEVICE_ATTR(probe_port, S_IWUSR, NULL, ehea_probe_port);
2855static DEVICE_ATTR(remove_port, S_IWUSR, NULL, ehea_remove_port);
2856
2857int ehea_create_device_sysfs(struct ibmebus_dev *dev)
2858{
2859 int ret = device_create_file(&dev->ofdev.dev, &dev_attr_probe_port);
2860 if (ret)
2861 goto out;
2862
2863 ret = device_create_file(&dev->ofdev.dev, &dev_attr_remove_port);
2864out:
7a291083
JBT		 2865 return ret;
2866}
2867
1acf2318
JBT		 2868void ehea_remove_device_sysfs(struct ibmebus_dev *dev)
2869{
2870 device_remove_file(&dev->ofdev.dev, &dev_attr_probe_port);
2871 device_remove_file(&dev->ofdev.dev, &dev_attr_remove_port);
2872}
2873
2874static int __devinit ehea_probe_adapter(struct ibmebus_dev *dev,
2875 const struct of_device_id *id)
7a291083
JBT		 2876{
2877 struct ehea_adapter *adapter;
9f9a3b8a 2878 const u64 *adapter_handle;
7a291083
JBT		 2879 int ret;
2880
1eef4e04
JBT		 2881 if (!dev || !dev->ofdev.node) {
2882 ehea_error("Invalid ibmebus device probed");
2883 return -EINVAL;
2884 }
2885
7a291083
JBT		 2886 adapter = kzalloc(sizeof(*adapter), GFP_KERNEL);
2887 if (!adapter) {
2888 ret = -ENOMEM;
2889 dev_err(&dev->ofdev.dev, "no mem for ehea_adapter\n");
2890 goto out;
2891 }
2892
44c82152
TK		 2893 list_add(&adapter->list, &adapter_list);
2894
1acf2318
JBT		 2895 adapter->ebus_dev = dev;
2896
40cd3a45 2897 adapter_handle = of_get_property(dev->ofdev.node, "ibm,hea-handle",
d1d25aab 2898 NULL);
061bf3cd
TK		 2899 if (adapter_handle)
2900 adapter->handle = *adapter_handle;
2901
2902 if (!adapter->handle) {
7a291083
JBT		 2903 dev_err(&dev->ofdev.dev, "failed getting handle for adapter"
2904 " '%s'\n", dev->ofdev.node->full_name);
2905 ret = -ENODEV;
2906 goto out_free_ad;
2907 }
2908
7a291083
JBT		 2909 adapter->pd = EHEA_PD_ID;
2910
2911 dev->ofdev.dev.driver_data = adapter;
2912
7a291083
JBT		 2913
2914 /* initialize adapter and ports */
2915 /* get adapter properties */
2916 ret = ehea_sense_adapter_attr(adapter);
2917 if (ret) {
2918 dev_err(&dev->ofdev.dev, "sense_adapter_attr failed: %d", ret);
1211bb6d 2919 goto out_free_ad;
7a291083 2920 }
7a291083
JBT		 2921
2922 adapter->neq = ehea_create_eq(adapter,
2923 EHEA_NEQ, EHEA_MAX_ENTRIES_EQ, 1);
2924 if (!adapter->neq) {
1eef4e04 2925 ret = -EIO;
7a291083 2926 dev_err(&dev->ofdev.dev, "NEQ creation failed");
1211bb6d 2927 goto out_free_ad;
7a291083
JBT		 2928 }
2929
2930 tasklet_init(&adapter->neq_tasklet, ehea_neq_tasklet,
2931 (unsigned long)adapter);
2932
2933 ret = ibmebus_request_irq(NULL, adapter->neq->attr.ist1,
38515e90 2934 ehea_interrupt_neq, IRQF_DISABLED,
7a291083
JBT		 2935 "ehea_neq", adapter);
2936 if (ret) {
2937 dev_err(&dev->ofdev.dev, "requesting NEQ IRQ failed");
2938 goto out_kill_eq;
2939 }
2940
2941 adapter->ehea_wq = create_workqueue("ehea_wq");
1eef4e04
JBT		 2942 if (!adapter->ehea_wq) {
2943 ret = -EIO;
7a291083 2944 goto out_free_irq;
1eef4e04 2945 }
7a291083 2946
1eef4e04
JBT		 2947 ret = ehea_create_device_sysfs(dev);
2948 if (ret)
1acf2318
JBT		 2949 goto out_kill_wq;
2950
7a291083
JBT		 2951 ret = ehea_setup_ports(adapter);
2952 if (ret) {
2953 dev_err(&dev->ofdev.dev, "setup_ports failed");
1acf2318 2954 goto out_rem_dev_sysfs;
7a291083
JBT		 2955 }
2956
2957 ret = 0;
2958 goto out;
2959
1acf2318
JBT		 2960out_rem_dev_sysfs:
2961 ehea_remove_device_sysfs(dev);
2962
7a291083
JBT		 2963out_kill_wq:
2964 destroy_workqueue(adapter->ehea_wq);
2965
2966out_free_irq:
2967 ibmebus_free_irq(NULL, adapter->neq->attr.ist1, adapter);
2968
2969out_kill_eq:
2970 ehea_destroy_eq(adapter->neq);
2971
7a291083
JBT		 2972out_free_ad:
2973 kfree(adapter);
2974out:
2975 return ret;
2976}
2977
7a291083
JBT		 2978static int __devexit ehea_remove(struct ibmebus_dev *dev)
2979{
2980 struct ehea_adapter *adapter = dev->ofdev.dev.driver_data;
7a291083
JBT		 2981 int i;
2982
1acf2318 2983 for (i = 0; i < EHEA_MAX_PORTS; i++)
7a291083
JBT		 2984 if (adapter->port[i]) {
2985 ehea_shutdown_single_port(adapter->port[i]);
2986 adapter->port[i] = NULL;
2987 }
1acf2318
JBT		 2988
2989 ehea_remove_device_sysfs(dev);
2990
7a291083
JBT		 2991 destroy_workqueue(adapter->ehea_wq);
2992
2993 ibmebus_free_irq(NULL, adapter->neq->attr.ist1, adapter);
d4150a27 2994 tasklet_kill(&adapter->neq_tasklet);
7a291083
JBT		 2995
2996 ehea_destroy_eq(adapter->neq);
1211bb6d 2997 ehea_remove_adapter_mr(adapter);
44c82152
TK		 2998 list_del(&adapter->list);
2999
7a291083 3000 kfree(adapter);
44c82152 3001
7a291083
JBT		 3002 return 0;
3003}
3004
3005static int check_module_parm(void)
3006{
3007 int ret = 0;
3008
3009 if ((rq1_entries < EHEA_MIN_ENTRIES_QP) ||
3010 (rq1_entries > EHEA_MAX_ENTRIES_RQ1)) {
3011 ehea_info("Bad parameter: rq1_entries");
3012 ret = -EINVAL;
3013 }
3014 if ((rq2_entries < EHEA_MIN_ENTRIES_QP) ||
3015 (rq2_entries > EHEA_MAX_ENTRIES_RQ2)) {
3016 ehea_info("Bad parameter: rq2_entries");
3017 ret = -EINVAL;
3018 }
3019 if ((rq3_entries < EHEA_MIN_ENTRIES_QP) ||
3020 (rq3_entries > EHEA_MAX_ENTRIES_RQ3)) {
3021 ehea_info("Bad parameter: rq3_entries");
3022 ret = -EINVAL;
3023 }
3024 if ((sq_entries < EHEA_MIN_ENTRIES_QP) ||
3025 (sq_entries > EHEA_MAX_ENTRIES_SQ)) {
3026 ehea_info("Bad parameter: sq_entries");
3027 ret = -EINVAL;
3028 }
3029
3030 return ret;
3031}
3032
4c3ca4da
JBT		 3033static ssize_t ehea_show_capabilities(struct device_driver *drv,
3034 char *buf)
3035{
3036 return sprintf(buf, "%d", EHEA_CAPABILITIES);
3037}
3038
3039static DRIVER_ATTR(capabilities, S_IRUSR | S_IRGRP | S_IROTH,
3040 ehea_show_capabilities, NULL);
3041
7a291083
JBT		 3042int __init ehea_module_init(void)
3043{
3044 int ret;
3045
3046 printk(KERN_INFO "IBM eHEA ethernet device driver (Release %s)\n",
3047 DRV_VERSION);
3048
44c82152
TK		 3049 ehea_driver_wq = create_workqueue("ehea_driver_wq");
3050
3051 INIT_WORK(&ehea_rereg_mr_task, ehea_rereg_mrs);
3052
7a291083
JBT		 3053 ret = check_module_parm();
3054 if (ret)
3055 goto out;
44c82152
TK		 3056
3057 ret = ehea_create_busmap();
3058 if (ret)
3059 goto out;
3060
7a291083 3061 ret = ibmebus_register_driver(&ehea_driver);
4c3ca4da 3062 if (ret) {
7a291083 3063 ehea_error("failed registering eHEA device driver on ebus");
4c3ca4da
JBT		 3064 goto out;
3065 }
3066
3067 ret = driver_create_file(&ehea_driver.driver,
3068 &driver_attr_capabilities);
3069 if (ret) {
3070 ehea_error("failed to register capabilities attribute, ret=%d",
3071 ret);
3072 ibmebus_unregister_driver(&ehea_driver);
3073 goto out;
3074 }
7a291083
JBT		 3075
3076out:
3077 return ret;
3078}
3079
3080static void __exit ehea_module_exit(void)
3081{
4c3ca4da 3082 driver_remove_file(&ehea_driver.driver, &driver_attr_capabilities);
7a291083 3083 ibmebus_unregister_driver(&ehea_driver);
44c82152 3084 ehea_destroy_busmap();
7a291083
JBT		 3085}
3086
3087module_init(ehea_module_init);
3088module_exit(ehea_module_exit);
Linux 6.x block layer and io_uring tree(s)