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Fix a lock problem in generic phy code
[net-next-2.6.git] / drivers / net / ehea / ehea_main.c
CommitLineData
7a291083
JBT		 1/*
2 * linux/drivers/net/ehea/ehea_main.c
3 *
4 * eHEA ethernet device driver for IBM eServer System p
5 *
6 * (C) Copyright IBM Corp. 2006
7 *
8 * Authors:
9 * Christoph Raisch <raisch@de.ibm.com>
10 * Jan-Bernd Themann <themann@de.ibm.com>
11 * Thomas Klein <tklein@de.ibm.com>
12 *
13 *
14 * This program is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License as published by
16 * the Free Software Foundation; either version 2, or (at your option)
17 * any later version.
18 *
19 * This program is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU General Public License for more details.
23 *
24 * You should have received a copy of the GNU General Public License
25 * along with this program; if not, write to the Free Software
26 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
27 */
28
29#include <linux/in.h>
30#include <linux/ip.h>
31#include <linux/tcp.h>
32#include <linux/udp.h>
33#include <linux/if.h>
34#include <linux/list.h>
35#include <linux/if_ether.h>
36#include <net/ip.h>
37
38#include "ehea.h"
39#include "ehea_qmr.h"
40#include "ehea_phyp.h"
41
42
43MODULE_LICENSE("GPL");
44MODULE_AUTHOR("Christoph Raisch <raisch@de.ibm.com>");
45MODULE_DESCRIPTION("IBM eServer HEA Driver");
46MODULE_VERSION(DRV_VERSION);
47
48
49static int msg_level = -1;
50static int rq1_entries = EHEA_DEF_ENTRIES_RQ1;
51static int rq2_entries = EHEA_DEF_ENTRIES_RQ2;
52static int rq3_entries = EHEA_DEF_ENTRIES_RQ3;
53static int sq_entries = EHEA_DEF_ENTRIES_SQ;
18604c54
JBT		 54static int use_mcs = 0;
55static int num_tx_qps = EHEA_NUM_TX_QP;
7a291083
JBT		 56
57module_param(msg_level, int, 0);
58module_param(rq1_entries, int, 0);
59module_param(rq2_entries, int, 0);
60module_param(rq3_entries, int, 0);
61module_param(sq_entries, int, 0);
18604c54
JBT		 62module_param(use_mcs, int, 0);
63module_param(num_tx_qps, int, 0);
7a291083 64
18604c54 65MODULE_PARM_DESC(num_tx_qps, "Number of TX-QPS");
7a291083
JBT		 66MODULE_PARM_DESC(msg_level, "msg_level");
67MODULE_PARM_DESC(rq3_entries, "Number of entries for Receive Queue 3 "
68 "[2^x - 1], x = [6..14]. Default = "
69 __MODULE_STRING(EHEA_DEF_ENTRIES_RQ3) ")");
70MODULE_PARM_DESC(rq2_entries, "Number of entries for Receive Queue 2 "
71 "[2^x - 1], x = [6..14]. Default = "
72 __MODULE_STRING(EHEA_DEF_ENTRIES_RQ2) ")");
73MODULE_PARM_DESC(rq1_entries, "Number of entries for Receive Queue 1 "
74 "[2^x - 1], x = [6..14]. Default = "
75 __MODULE_STRING(EHEA_DEF_ENTRIES_RQ1) ")");
76MODULE_PARM_DESC(sq_entries, " Number of entries for the Send Queue "
77 "[2^x - 1], x = [6..14]. Default = "
78 __MODULE_STRING(EHEA_DEF_ENTRIES_SQ) ")");
18072a5b 79MODULE_PARM_DESC(use_mcs, " 0:NAPI, 1:Multiple receive queues, Default = 0 ");
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
8d22c971
JBT		 592#ifdef CONFIG_NET_POLL_CONTROLLER
593static void ehea_netpoll(struct net_device *dev)
594{
595 struct ehea_port *port = netdev_priv(dev);
596
597 netif_rx_schedule(port->port_res[0].d_netdev);
598}
599#endif
600
601static int ehea_poll_firstqueue(struct net_device *dev, int *budget)
602{
603 struct ehea_port *port = netdev_priv(dev);
604 struct net_device *d_dev = port->port_res[0].d_netdev;
605
606 return ehea_poll(d_dev, budget);
607}
608
7d12e780 609static irqreturn_t ehea_recv_irq_handler(int irq, void *param)
7a291083
JBT		 610{
611 struct ehea_port_res *pr = param;
18604c54
JBT		 612
613 netif_rx_schedule(pr->d_netdev);
614
7a291083
JBT		 615 return IRQ_HANDLED;
616}
617
7d12e780 618static irqreturn_t ehea_qp_aff_irq_handler(int irq, void *param)
7a291083
JBT		 619{
620 struct ehea_port *port = param;
621 struct ehea_eqe *eqe;
d2db9eea 622 struct ehea_qp *qp;
7a291083
JBT		 623 u32 qp_token;
624
625 eqe = ehea_poll_eq(port->qp_eq);
bb3a6449 626
7a291083 627 while (eqe) {
7a291083 628 qp_token = EHEA_BMASK_GET(EHEA_EQE_QP_TOKEN, eqe->entry);
bb3a6449
TK		 629 ehea_error("QP aff_err: entry=0x%lx, token=0x%x",
630 eqe->entry, qp_token);
d2db9eea
JBT		 631
632 qp = port->port_res[qp_token].qp;
633 ehea_error_data(port->adapter, qp->fw_handle);
bb3a6449 634 eqe = ehea_poll_eq(port->qp_eq);
7a291083
JBT		 635 }
636
d2db9eea
JBT		 637 queue_work(port->adapter->ehea_wq, &port->reset_task);
638
7a291083
JBT		 639 return IRQ_HANDLED;
640}
641
642static struct ehea_port *ehea_get_port(struct ehea_adapter *adapter,
643 int logical_port)
644{
645 int i;
646
1acf2318 647 for (i = 0; i < EHEA_MAX_PORTS; i++)
41b69c70 648 if (adapter->port[i])
d1d25aab 649 if (adapter->port[i]->logical_port_id == logical_port)
41b69c70 650 return adapter->port[i];
7a291083
JBT		 651 return NULL;
652}
653
654int ehea_sense_port_attr(struct ehea_port *port)
655{
656 int ret;
657 u64 hret;
658 struct hcp_ehea_port_cb0 *cb0;
659
a1d261c5
TK		 660 cb0 = kzalloc(PAGE_SIZE, GFP_ATOMIC); /* May be called via */
661 if (!cb0) { /* ehea_neq_tasklet() */
7a291083
JBT		 662 ehea_error("no mem for cb0");
663 ret = -ENOMEM;
664 goto out;
665 }
666
667 hret = ehea_h_query_ehea_port(port->adapter->handle,
668 port->logical_port_id, H_PORT_CB0,
669 EHEA_BMASK_SET(H_PORT_CB0_ALL, 0xFFFF),
670 cb0);
671 if (hret != H_SUCCESS) {
672 ret = -EIO;
673 goto out_free;
674 }
675
676 /* MAC address */
677 port->mac_addr = cb0->port_mac_addr << 16;
678
679 if (!is_valid_ether_addr((u8*)&port->mac_addr)) {
680 ret = -EADDRNOTAVAIL;
681 goto out_free;
682 }
683
684 /* Port speed */
685 switch (cb0->port_speed) {
686 case H_SPEED_10M_H:
687 port->port_speed = EHEA_SPEED_10M;
688 port->full_duplex = 0;
689 break;
690 case H_SPEED_10M_F:
691 port->port_speed = EHEA_SPEED_10M;
692 port->full_duplex = 1;
693 break;
694 case H_SPEED_100M_H:
695 port->port_speed = EHEA_SPEED_100M;
696 port->full_duplex = 0;
697 break;
698 case H_SPEED_100M_F:
699 port->port_speed = EHEA_SPEED_100M;
700 port->full_duplex = 1;
701 break;
702 case H_SPEED_1G_F:
703 port->port_speed = EHEA_SPEED_1G;
704 port->full_duplex = 1;
705 break;
706 case H_SPEED_10G_F:
707 port->port_speed = EHEA_SPEED_10G;
708 port->full_duplex = 1;
709 break;
710 default:
711 port->port_speed = 0;
712 port->full_duplex = 0;
713 break;
714 }
715
e919b593 716 port->autoneg = 1;
18604c54 717 port->num_mcs = cb0->num_default_qps;
e919b593 718
7a291083 719 /* Number of default QPs */
18604c54
JBT		 720 if (use_mcs)
721 port->num_def_qps = cb0->num_default_qps;
722 else
723 port->num_def_qps = 1;
7a291083
JBT		 724
725 if (!port->num_def_qps) {
726 ret = -EINVAL;
727 goto out_free;
728 }
729
18604c54
JBT		 730 port->num_tx_qps = num_tx_qps;
731
732 if (port->num_def_qps >= port->num_tx_qps)
7a291083
JBT		 733 port->num_add_tx_qps = 0;
734 else
18604c54 735 port->num_add_tx_qps = port->num_tx_qps - port->num_def_qps;
7a291083
JBT		 736
737 ret = 0;
738out_free:
739 if (ret || netif_msg_probe(port))
740 ehea_dump(cb0, sizeof(*cb0), "ehea_sense_port_attr");
741 kfree(cb0);
742out:
743 return ret;
744}
745
746int ehea_set_portspeed(struct ehea_port *port, u32 port_speed)
747{
748 struct hcp_ehea_port_cb4 *cb4;
749 u64 hret;
750 int ret = 0;
751
a1d261c5 752 cb4 = kzalloc(PAGE_SIZE, GFP_KERNEL);
7a291083
JBT		 753 if (!cb4) {
754 ehea_error("no mem for cb4");
755 ret = -ENOMEM;
756 goto out;
757 }
758
759 cb4->port_speed = port_speed;
760
761 netif_carrier_off(port->netdev);
762
763 hret = ehea_h_modify_ehea_port(port->adapter->handle,
764 port->logical_port_id,
765 H_PORT_CB4, H_PORT_CB4_SPEED, cb4);
766 if (hret == H_SUCCESS) {
767 port->autoneg = port_speed == EHEA_SPEED_AUTONEG ? 1 : 0;
768
769 hret = ehea_h_query_ehea_port(port->adapter->handle,
770 port->logical_port_id,
771 H_PORT_CB4, H_PORT_CB4_SPEED,
772 cb4);
773 if (hret == H_SUCCESS) {
774 switch (cb4->port_speed) {
775 case H_SPEED_10M_H:
776 port->port_speed = EHEA_SPEED_10M;
777 port->full_duplex = 0;
778 break;
779 case H_SPEED_10M_F:
780 port->port_speed = EHEA_SPEED_10M;
781 port->full_duplex = 1;
782 break;
783 case H_SPEED_100M_H:
784 port->port_speed = EHEA_SPEED_100M;
785 port->full_duplex = 0;
786 break;
787 case H_SPEED_100M_F:
788 port->port_speed = EHEA_SPEED_100M;
789 port->full_duplex = 1;
790 break;
791 case H_SPEED_1G_F:
792 port->port_speed = EHEA_SPEED_1G;
793 port->full_duplex = 1;
794 break;
795 case H_SPEED_10G_F:
796 port->port_speed = EHEA_SPEED_10G;
797 port->full_duplex = 1;
798 break;
799 default:
800 port->port_speed = 0;
801 port->full_duplex = 0;
802 break;
803 }
804 } else {
805 ehea_error("Failed sensing port speed");
806 ret = -EIO;
807 }
808 } else {
809 if (hret == H_AUTHORITY) {
7674a588 810 ehea_info("Hypervisor denied setting port speed");
7a291083
JBT		 811 ret = -EPERM;
812 } else {
813 ret = -EIO;
814 ehea_error("Failed setting port speed");
815 }
816 }
817 netif_carrier_on(port->netdev);
818 kfree(cb4);
819out:
820 return ret;
821}
822
823static void ehea_parse_eqe(struct ehea_adapter *adapter, u64 eqe)
824{
825 int ret;
826 u8 ec;
827 u8 portnum;
828 struct ehea_port *port;
829
830 ec = EHEA_BMASK_GET(NEQE_EVENT_CODE, eqe);
831 portnum = EHEA_BMASK_GET(NEQE_PORTNUM, eqe);
832 port = ehea_get_port(adapter, portnum);
833
834 switch (ec) {
835 case EHEA_EC_PORTSTATE_CHG: /* port state change */
836
837 if (!port) {
838 ehea_error("unknown portnum %x", portnum);
839 break;
840 }
841
842 if (EHEA_BMASK_GET(NEQE_PORT_UP, eqe)) {
843 if (!netif_carrier_ok(port->netdev)) {
1e1675cc 844 ret = ehea_sense_port_attr(port);
7a291083
JBT		 845 if (ret) {
846 ehea_error("failed resensing port "
847 "attributes");
848 break;
849 }
850
851 if (netif_msg_link(port))
852 ehea_info("%s: Logical port up: %dMbps "
853 "%s Duplex",
854 port->netdev->name,
855 port->port_speed,
856 port->full_duplex ==
857 1 ? "Full" : "Half");
858
859 netif_carrier_on(port->netdev);
860 netif_wake_queue(port->netdev);
861 }
862 } else
863 if (netif_carrier_ok(port->netdev)) {
864 if (netif_msg_link(port))
865 ehea_info("%s: Logical port down",
866 port->netdev->name);
867 netif_carrier_off(port->netdev);
868 netif_stop_queue(port->netdev);
869 }
870
871 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PORT_UP, eqe)) {
872 if (netif_msg_link(port))
873 ehea_info("%s: Physical port up",
874 port->netdev->name);
875 } else {
876 if (netif_msg_link(port))
877 ehea_info("%s: Physical port down",
878 port->netdev->name);
879 }
880
881 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PRIMARY, eqe))
882 ehea_info("External switch port is primary port");
883 else
884 ehea_info("External switch port is backup port");
885
886 break;
887 case EHEA_EC_ADAPTER_MALFUNC:
888 ehea_error("Adapter malfunction");
889 break;
890 case EHEA_EC_PORT_MALFUNC:
891 ehea_info("Port malfunction: Device: %s", port->netdev->name);
892 netif_carrier_off(port->netdev);
893 netif_stop_queue(port->netdev);
894 break;
895 default:
bff0a55f 896 ehea_error("unknown event code %x, eqe=0x%lX", ec, eqe);
7a291083
JBT		 897 break;
898 }
899}
900
901static void ehea_neq_tasklet(unsigned long data)
902{
903 struct ehea_adapter *adapter = (struct ehea_adapter*)data;
904 struct ehea_eqe *eqe;
905 u64 event_mask;
906
907 eqe = ehea_poll_eq(adapter->neq);
908 ehea_debug("eqe=%p", eqe);
909
910 while (eqe) {
911 ehea_debug("*eqe=%lx", eqe->entry);
912 ehea_parse_eqe(adapter, eqe->entry);
913 eqe = ehea_poll_eq(adapter->neq);
914 ehea_debug("next eqe=%p", eqe);
915 }
916
917 event_mask = EHEA_BMASK_SET(NELR_PORTSTATE_CHG, 1)
918 | EHEA_BMASK_SET(NELR_ADAPTER_MALFUNC, 1)
919 | EHEA_BMASK_SET(NELR_PORT_MALFUNC, 1);
920
921 ehea_h_reset_events(adapter->handle,
922 adapter->neq->fw_handle, event_mask);
923}
924
7d12e780 925static irqreturn_t ehea_interrupt_neq(int irq, void *param)
7a291083
JBT		 926{
927 struct ehea_adapter *adapter = param;
928 tasklet_hi_schedule(&adapter->neq_tasklet);
929 return IRQ_HANDLED;
930}
931
932
933static int ehea_fill_port_res(struct ehea_port_res *pr)
934{
935 int ret;
936 struct ehea_qp_init_attr *init_attr = &pr->qp->init_attr;
937
938 ret = ehea_init_fill_rq1(pr, init_attr->act_nr_rwqes_rq1
939 - init_attr->act_nr_rwqes_rq2
940 - init_attr->act_nr_rwqes_rq3 - 1);
941
942 ret |= ehea_refill_rq2(pr, init_attr->act_nr_rwqes_rq2 - 1);
943
944 ret |= ehea_refill_rq3(pr, init_attr->act_nr_rwqes_rq3 - 1);
945
946 return ret;
947}
948
949static int ehea_reg_interrupts(struct net_device *dev)
950{
951 struct ehea_port *port = netdev_priv(dev);
952 struct ehea_port_res *pr;
953 int i, ret;
954
7a291083
JBT		 955
956 snprintf(port->int_aff_name, EHEA_IRQ_NAME_SIZE - 1, "%s-aff",
957 dev->name);
958
959 ret = ibmebus_request_irq(NULL, port->qp_eq->attr.ist1,
960 ehea_qp_aff_irq_handler,
38515e90 961 IRQF_DISABLED, port->int_aff_name, port);
7a291083
JBT		 962 if (ret) {
963 ehea_error("failed registering irq for qp_aff_irq_handler:"
964 "ist=%X", port->qp_eq->attr.ist1);
965 goto out_free_qpeq;
966 }
967
968 if (netif_msg_ifup(port))
969 ehea_info("irq_handle 0x%X for function qp_aff_irq_handler "
970 "registered", port->qp_eq->attr.ist1);
971
18604c54 972
7a291083
JBT		 973 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
974 pr = &port->port_res[i];
975 snprintf(pr->int_send_name, EHEA_IRQ_NAME_SIZE - 1,
18604c54
JBT		 976 "%s-queue%d", dev->name, i);
977 ret = ibmebus_request_irq(NULL, pr->eq->attr.ist1,
978 ehea_recv_irq_handler,
38515e90 979 IRQF_DISABLED, pr->int_send_name,
7a291083
JBT		 980 pr);
981 if (ret) {
18604c54 982 ehea_error("failed registering irq for ehea_queue "
7a291083 983 "port_res_nr:%d, ist=%X", i,
18604c54 984 pr->eq->attr.ist1);
7a291083
JBT		 985 goto out_free_req;
986 }
987 if (netif_msg_ifup(port))
18604c54
JBT		 988 ehea_info("irq_handle 0x%X for function ehea_queue_int "
989 "%d registered", pr->eq->attr.ist1, i);
7a291083
JBT		 990 }
991out:
992 return ret;
993
18604c54 994
7a291083
JBT		 995out_free_req:
996 while (--i >= 0) {
18604c54 997 u32 ist = port->port_res[i].eq->attr.ist1;
7a291083
JBT		 998 ibmebus_free_irq(NULL, ist, &port->port_res[i]);
999 }
18604c54 1000
7a291083
JBT		 1001out_free_qpeq:
1002 ibmebus_free_irq(NULL, port->qp_eq->attr.ist1, port);
1003 i = port->num_def_qps;
18604c54 1004
7a291083 1005 goto out;
18604c54 1006
7a291083
JBT		 1007}
1008
1009static void ehea_free_interrupts(struct net_device *dev)
1010{
1011 struct ehea_port *port = netdev_priv(dev);
1012 struct ehea_port_res *pr;
1013 int i;
1014
1015 /* send */
18604c54 1016
7a291083
JBT		 1017 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
1018 pr = &port->port_res[i];
18604c54 1019 ibmebus_free_irq(NULL, pr->eq->attr.ist1, pr);
7a291083
JBT		 1020 if (netif_msg_intr(port))
1021 ehea_info("free send irq for res %d with handle 0x%X",
18604c54 1022 i, pr->eq->attr.ist1);
7a291083
JBT		 1023 }
1024
1025 /* associated events */
1026 ibmebus_free_irq(NULL, port->qp_eq->attr.ist1, port);
1027 if (netif_msg_intr(port))
1028 ehea_info("associated event interrupt for handle 0x%X freed",
1029 port->qp_eq->attr.ist1);
1030}
1031
1032static int ehea_configure_port(struct ehea_port *port)
1033{
1034 int ret, i;
1035 u64 hret, mask;
1036 struct hcp_ehea_port_cb0 *cb0;
1037
1038 ret = -ENOMEM;
a1d261c5 1039 cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL);
7a291083
JBT		 1040 if (!cb0)
1041 goto out;
1042
1043 cb0->port_rc = EHEA_BMASK_SET(PXLY_RC_VALID, 1)
1044 | EHEA_BMASK_SET(PXLY_RC_IP_CHKSUM, 1)
1045 | EHEA_BMASK_SET(PXLY_RC_TCP_UDP_CHKSUM, 1)
1046 | EHEA_BMASK_SET(PXLY_RC_VLAN_XTRACT, 1)
1047 | EHEA_BMASK_SET(PXLY_RC_VLAN_TAG_FILTER,
1048 PXLY_RC_VLAN_FILTER)
1049 | EHEA_BMASK_SET(PXLY_RC_JUMBO_FRAME, 1);
1050
18604c54
JBT		 1051 for (i = 0; i < port->num_mcs; i++)
1052 if (use_mcs)
1053 cb0->default_qpn_arr[i] =
1054 port->port_res[i].qp->init_attr.qp_nr;
1055 else
1056 cb0->default_qpn_arr[i] =
1057 port->port_res[0].qp->init_attr.qp_nr;
e542aa6b 1058
7a291083
JBT		 1059 if (netif_msg_ifup(port))
1060 ehea_dump(cb0, sizeof(*cb0), "ehea_configure_port");
1061
1062 mask = EHEA_BMASK_SET(H_PORT_CB0_PRC, 1)
1063 | EHEA_BMASK_SET(H_PORT_CB0_DEFQPNARRAY, 1);
1064
1065 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1066 port->logical_port_id,
1067 H_PORT_CB0, mask, cb0);
1068 ret = -EIO;
1069 if (hret != H_SUCCESS)
1070 goto out_free;
1071
1072 ret = 0;
1073
1074out_free:
1075 kfree(cb0);
1076out:
1077 return ret;
1078}
1079
e542aa6b 1080int ehea_gen_smrs(struct ehea_port_res *pr)
7a291083 1081{
e542aa6b 1082 int ret;
7a291083
JBT		 1083 struct ehea_adapter *adapter = pr->port->adapter;
1084
e542aa6b
JBT		 1085 ret = ehea_gen_smr(adapter, &adapter->mr, &pr->send_mr);
1086 if (ret)
7a291083
JBT		 1087 goto out;
1088
e542aa6b
JBT		 1089 ret = ehea_gen_smr(adapter, &adapter->mr, &pr->recv_mr);
1090 if (ret)
1091 goto out_free;
7a291083
JBT		 1092
1093 return 0;
1094
e542aa6b
JBT		 1095out_free:
1096 ehea_rem_mr(&pr->send_mr);
7a291083 1097out:
e542aa6b 1098 ehea_error("Generating SMRS failed\n");
7a291083
JBT		 1099 return -EIO;
1100}
1101
e542aa6b 1102int ehea_rem_smrs(struct ehea_port_res *pr)
7a291083 1103{
e542aa6b
JBT		 1104 if ((ehea_rem_mr(&pr->send_mr))
1105 || (ehea_rem_mr(&pr->recv_mr)))
1106 return -EIO;
1107 else
1108 return 0;
7a291083
JBT		 1109}
1110
1111static int ehea_init_q_skba(struct ehea_q_skb_arr *q_skba, int max_q_entries)
1112{
1113 int arr_size = sizeof(void*) * max_q_entries;
1114
1115 q_skba->arr = vmalloc(arr_size);
1116 if (!q_skba->arr)
1117 return -ENOMEM;
1118
1119 memset(q_skba->arr, 0, arr_size);
1120
1121 q_skba->len = max_q_entries;
1122 q_skba->index = 0;
1123 q_skba->os_skbs = 0;
1124
1125 return 0;
1126}
1127
1128static int ehea_init_port_res(struct ehea_port *port, struct ehea_port_res *pr,
1129 struct port_res_cfg *pr_cfg, int queue_token)
1130{
1131 struct ehea_adapter *adapter = port->adapter;
1132 enum ehea_eq_type eq_type = EHEA_EQ;
1133 struct ehea_qp_init_attr *init_attr = NULL;
1134 int ret = -EIO;
1135
1136 memset(pr, 0, sizeof(struct ehea_port_res));
1137
1138 pr->port = port;
7a291083
JBT		 1139 spin_lock_init(&pr->xmit_lock);
1140 spin_lock_init(&pr->netif_queue);
1141
18604c54
JBT		 1142 pr->eq = ehea_create_eq(adapter, eq_type, EHEA_MAX_ENTRIES_EQ, 0);
1143 if (!pr->eq) {
1144 ehea_error("create_eq failed (eq)");
7a291083
JBT		 1145 goto out_free;
1146 }
1147
1148 pr->recv_cq = ehea_create_cq(adapter, pr_cfg->max_entries_rcq,
18604c54 1149 pr->eq->fw_handle,
7a291083
JBT		 1150 port->logical_port_id);
1151 if (!pr->recv_cq) {
1152 ehea_error("create_cq failed (cq_recv)");
1153 goto out_free;
1154 }
1155
1156 pr->send_cq = ehea_create_cq(adapter, pr_cfg->max_entries_scq,
18604c54 1157 pr->eq->fw_handle,
7a291083
JBT		 1158 port->logical_port_id);
1159 if (!pr->send_cq) {
1160 ehea_error("create_cq failed (cq_send)");
1161 goto out_free;
1162 }
1163
1164 if (netif_msg_ifup(port))
1165 ehea_info("Send CQ: act_nr_cqes=%d, Recv CQ: act_nr_cqes=%d",
1166 pr->send_cq->attr.act_nr_of_cqes,
1167 pr->recv_cq->attr.act_nr_of_cqes);
1168
1169 init_attr = kzalloc(sizeof(*init_attr), GFP_KERNEL);
1170 if (!init_attr) {
1171 ret = -ENOMEM;
1172 ehea_error("no mem for ehea_qp_init_attr");
1173 goto out_free;
1174 }
1175
1176 init_attr->low_lat_rq1 = 1;
1177 init_attr->signalingtype = 1; /* generate CQE if specified in WQE */
1178 init_attr->rq_count = 3;
1179 init_attr->qp_token = queue_token;
1180 init_attr->max_nr_send_wqes = pr_cfg->max_entries_sq;
1181 init_attr->max_nr_rwqes_rq1 = pr_cfg->max_entries_rq1;
1182 init_attr->max_nr_rwqes_rq2 = pr_cfg->max_entries_rq2;
1183 init_attr->max_nr_rwqes_rq3 = pr_cfg->max_entries_rq3;
1184 init_attr->wqe_size_enc_sq = EHEA_SG_SQ;
1185 init_attr->wqe_size_enc_rq1 = EHEA_SG_RQ1;
1186 init_attr->wqe_size_enc_rq2 = EHEA_SG_RQ2;
1187 init_attr->wqe_size_enc_rq3 = EHEA_SG_RQ3;
1188 init_attr->rq2_threshold = EHEA_RQ2_THRESHOLD;
1189 init_attr->rq3_threshold = EHEA_RQ3_THRESHOLD;
1190 init_attr->port_nr = port->logical_port_id;
1191 init_attr->send_cq_handle = pr->send_cq->fw_handle;
1192 init_attr->recv_cq_handle = pr->recv_cq->fw_handle;
1193 init_attr->aff_eq_handle = port->qp_eq->fw_handle;
1194
1195 pr->qp = ehea_create_qp(adapter, adapter->pd, init_attr);
1196 if (!pr->qp) {
1197 ehea_error("create_qp failed");
1198 ret = -EIO;
1199 goto out_free;
1200 }
1201
1202 if (netif_msg_ifup(port))
1203 ehea_info("QP: qp_nr=%d\n act_nr_snd_wqe=%d\n nr_rwqe_rq1=%d\n "
1204 "nr_rwqe_rq2=%d\n nr_rwqe_rq3=%d", init_attr->qp_nr,
1205 init_attr->act_nr_send_wqes,
1206 init_attr->act_nr_rwqes_rq1,
1207 init_attr->act_nr_rwqes_rq2,
1208 init_attr->act_nr_rwqes_rq3);
1209
1210 ret = ehea_init_q_skba(&pr->sq_skba, init_attr->act_nr_send_wqes + 1);
1211 ret |= ehea_init_q_skba(&pr->rq1_skba, init_attr->act_nr_rwqes_rq1 + 1);
1212 ret |= ehea_init_q_skba(&pr->rq2_skba, init_attr->act_nr_rwqes_rq2 + 1);
1213 ret |= ehea_init_q_skba(&pr->rq3_skba, init_attr->act_nr_rwqes_rq3 + 1);
1214 if (ret)
1215 goto out_free;
1216
1217 pr->swqe_refill_th = init_attr->act_nr_send_wqes / 10;
1218 if (ehea_gen_smrs(pr) != 0) {
1219 ret = -EIO;
1220 goto out_free;
1221 }
18604c54 1222
7a291083
JBT		 1223 atomic_set(&pr->swqe_avail, init_attr->act_nr_send_wqes - 1);
1224
1225 kfree(init_attr);
18604c54
JBT		 1226
1227 pr->d_netdev = alloc_netdev(0, "", ether_setup);
1228 if (!pr->d_netdev)
1229 goto out_free;
1230 pr->d_netdev->priv = pr;
1231 pr->d_netdev->weight = 64;
1232 pr->d_netdev->poll = ehea_poll;
1233 set_bit(__LINK_STATE_START, &pr->d_netdev->state);
1234 strcpy(pr->d_netdev->name, port->netdev->name);
1235
7a291083
JBT		 1236 ret = 0;
1237 goto out;
1238
1239out_free:
1240 kfree(init_attr);
1241 vfree(pr->sq_skba.arr);
1242 vfree(pr->rq1_skba.arr);
1243 vfree(pr->rq2_skba.arr);
1244 vfree(pr->rq3_skba.arr);
1245 ehea_destroy_qp(pr->qp);
1246 ehea_destroy_cq(pr->send_cq);
1247 ehea_destroy_cq(pr->recv_cq);
18604c54 1248 ehea_destroy_eq(pr->eq);
7a291083
JBT		 1249out:
1250 return ret;
1251}
1252
1253static int ehea_clean_portres(struct ehea_port *port, struct ehea_port_res *pr)
1254{
1255 int ret, i;
1256
18604c54
JBT		 1257 free_netdev(pr->d_netdev);
1258
7a291083
JBT		 1259 ret = ehea_destroy_qp(pr->qp);
1260
1261 if (!ret) {
1262 ehea_destroy_cq(pr->send_cq);
1263 ehea_destroy_cq(pr->recv_cq);
18604c54 1264 ehea_destroy_eq(pr->eq);
7a291083
JBT		 1265
1266 for (i = 0; i < pr->rq1_skba.len; i++)
1267 if (pr->rq1_skba.arr[i])
1268 dev_kfree_skb(pr->rq1_skba.arr[i]);
1269
1270 for (i = 0; i < pr->rq2_skba.len; i++)
1271 if (pr->rq2_skba.arr[i])
1272 dev_kfree_skb(pr->rq2_skba.arr[i]);
1273
1274 for (i = 0; i < pr->rq3_skba.len; i++)
1275 if (pr->rq3_skba.arr[i])
1276 dev_kfree_skb(pr->rq3_skba.arr[i]);
1277
1278 for (i = 0; i < pr->sq_skba.len; i++)
1279 if (pr->sq_skba.arr[i])
1280 dev_kfree_skb(pr->sq_skba.arr[i]);
1281
1282 vfree(pr->rq1_skba.arr);
1283 vfree(pr->rq2_skba.arr);
1284 vfree(pr->rq3_skba.arr);
1285 vfree(pr->sq_skba.arr);
1286 ret = ehea_rem_smrs(pr);
1287 }
1288 return ret;
1289}
1290
1291/*
1292 * The write_* functions store information in swqe which is used by
1293 * the hardware to calculate the ip/tcp/udp checksum
1294 */
1295
1296static inline void write_ip_start_end(struct ehea_swqe *swqe,
1297 const struct sk_buff *skb)
1298{
eddc9ec5 1299 swqe->ip_start = skb_network_offset(skb);
c9bdd4b5 1300 swqe->ip_end = (u8)(swqe->ip_start + ip_hdrlen(skb) - 1);
7a291083
JBT		 1301}
1302
1303static inline void write_tcp_offset_end(struct ehea_swqe *swqe,
1304 const struct sk_buff *skb)
1305{
1306 swqe->tcp_offset =
1307 (u8)(swqe->ip_end + 1 + offsetof(struct tcphdr, check));
1308
1309 swqe->tcp_end = (u16)skb->len - 1;
1310}
1311
1312static inline void write_udp_offset_end(struct ehea_swqe *swqe,
1313 const struct sk_buff *skb)
1314{
1315 swqe->tcp_offset =
1316 (u8)(swqe->ip_end + 1 + offsetof(struct udphdr, check));
1317
1318 swqe->tcp_end = (u16)skb->len - 1;
1319}
1320
1321
1322static void write_swqe2_TSO(struct sk_buff *skb,
1323 struct ehea_swqe *swqe, u32 lkey)
1324{
1325 struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry;
1326 u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0];
1327 int skb_data_size = skb->len - skb->data_len;
1328 int headersize;
7a291083
JBT		 1329
1330 /* Packet is TCP with TSO enabled */
1331 swqe->tx_control |= EHEA_SWQE_TSO;
1332 swqe->mss = skb_shinfo(skb)->gso_size;
1333 /* copy only eth/ip/tcp headers to immediate data and
1334 * the rest of skb->data to sg1entry
1335 */
ab6a5bb6 1336 headersize = ETH_HLEN + ip_hdrlen(skb) + tcp_hdrlen(skb);
7a291083
JBT		 1337
1338 skb_data_size = skb->len - skb->data_len;
1339
1340 if (skb_data_size >= headersize) {
1341 /* copy immediate data */
d626f62b 1342 skb_copy_from_linear_data(skb, imm_data, headersize);
7a291083
JBT		 1343 swqe->immediate_data_length = headersize;
1344
1345 if (skb_data_size > headersize) {
1346 /* set sg1entry data */
1347 sg1entry->l_key = lkey;
1348 sg1entry->len = skb_data_size - headersize;
44a5b3d5
TK		 1349 sg1entry->vaddr =
1350 ehea_map_vaddr(skb->data + headersize);
7a291083
JBT		 1351 swqe->descriptors++;
1352 }
1353 } else
1354 ehea_error("cannot handle fragmented headers");
1355}
1356
1357static void write_swqe2_nonTSO(struct sk_buff *skb,
1358 struct ehea_swqe *swqe, u32 lkey)
1359{
1360 int skb_data_size = skb->len - skb->data_len;
1361 u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0];
1362 struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry;
7a291083
JBT		 1363
1364 /* Packet is any nonTSO type
1365 *
1366 * Copy as much as possible skb->data to immediate data and
1367 * the rest to sg1entry
1368 */
1369 if (skb_data_size >= SWQE2_MAX_IMM) {
1370 /* copy immediate data */
d626f62b 1371 skb_copy_from_linear_data(skb, imm_data, SWQE2_MAX_IMM);
7a291083
JBT		 1372
1373 swqe->immediate_data_length = SWQE2_MAX_IMM;
1374
1375 if (skb_data_size > SWQE2_MAX_IMM) {
1376 /* copy sg1entry data */
1377 sg1entry->l_key = lkey;
1378 sg1entry->len = skb_data_size - SWQE2_MAX_IMM;
44a5b3d5
TK		 1379 sg1entry->vaddr =
1380 ehea_map_vaddr(skb->data + SWQE2_MAX_IMM);
7a291083
JBT		 1381 swqe->descriptors++;
1382 }
1383 } else {
d626f62b 1384 skb_copy_from_linear_data(skb, imm_data, skb_data_size);
7a291083
JBT		 1385 swqe->immediate_data_length = skb_data_size;
1386 }
1387}
1388
1389static inline void write_swqe2_data(struct sk_buff *skb, struct net_device *dev,
1390 struct ehea_swqe *swqe, u32 lkey)
1391{
1392 struct ehea_vsgentry *sg_list, *sg1entry, *sgentry;
1393 skb_frag_t *frag;
1394 int nfrags, sg1entry_contains_frag_data, i;
7a291083
JBT		 1395
1396 nfrags = skb_shinfo(skb)->nr_frags;
1397 sg1entry = &swqe->u.immdata_desc.sg_entry;
1398 sg_list = (struct ehea_vsgentry*)&swqe->u.immdata_desc.sg_list;
1399 swqe->descriptors = 0;
1400 sg1entry_contains_frag_data = 0;
1401
1402 if ((dev->features & NETIF_F_TSO) && skb_shinfo(skb)->gso_size)
1403 write_swqe2_TSO(skb, swqe, lkey);
1404 else
1405 write_swqe2_nonTSO(skb, swqe, lkey);
1406
1407 /* write descriptors */
1408 if (nfrags > 0) {
1409 if (swqe->descriptors == 0) {
1410 /* sg1entry not yet used */
1411 frag = &skb_shinfo(skb)->frags[0];
1412
1413 /* copy sg1entry data */
1414 sg1entry->l_key = lkey;
1415 sg1entry->len = frag->size;
44a5b3d5
TK		 1416 sg1entry->vaddr =
1417 ehea_map_vaddr(page_address(frag->page)
1418 + frag->page_offset);
7a291083
JBT		 1419 swqe->descriptors++;
1420 sg1entry_contains_frag_data = 1;
1421 }
1422
1423 for (i = sg1entry_contains_frag_data; i < nfrags; i++) {
1424
1425 frag = &skb_shinfo(skb)->frags[i];
1426 sgentry = &sg_list[i - sg1entry_contains_frag_data];
1427
1428 sgentry->l_key = lkey;
1429 sgentry->len = frag->size;
44a5b3d5
TK		 1430 sgentry->vaddr =
1431 ehea_map_vaddr(page_address(frag->page)
1432 + frag->page_offset);
7a291083
JBT		 1433 swqe->descriptors++;
1434 }
1435 }
1436}
1437
1438static int ehea_broadcast_reg_helper(struct ehea_port *port, u32 hcallid)
1439{
1440 int ret = 0;
1441 u64 hret;
1442 u8 reg_type;
1443
1444 /* De/Register untagged packets */
1445 reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_UNTAGGED;
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 (tagged)",
1451 hcallid == H_REG_BCMC ? "" : "de");
7a291083
JBT		 1452 ret = -EIO;
1453 goto out_herr;
1454 }
1455
1456 /* De/Register VLAN packets */
1457 reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_VLANID_ALL;
1458 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1459 port->logical_port_id,
1460 reg_type, port->mac_addr, 0, hcallid);
1461 if (hret != H_SUCCESS) {
f9e29228
TK		 1462 ehea_error("%sregistering bc address failed (vlan)",
1463 hcallid == H_REG_BCMC ? "" : "de");
7a291083
JBT		 1464 ret = -EIO;
1465 }
1466out_herr:
1467 return ret;
1468}
1469
1470static int ehea_set_mac_addr(struct net_device *dev, void *sa)
1471{
1472 struct ehea_port *port = netdev_priv(dev);
1473 struct sockaddr *mac_addr = sa;
1474 struct hcp_ehea_port_cb0 *cb0;
1475 int ret;
1476 u64 hret;
1477
1478 if (!is_valid_ether_addr(mac_addr->sa_data)) {
1479 ret = -EADDRNOTAVAIL;
1480 goto out;
1481 }
1482
a1d261c5 1483 cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL);
7a291083
JBT		 1484 if (!cb0) {
1485 ehea_error("no mem for cb0");
1486 ret = -ENOMEM;
1487 goto out;
1488 }
1489
1490 memcpy(&(cb0->port_mac_addr), &(mac_addr->sa_data[0]), ETH_ALEN);
1491
1492 cb0->port_mac_addr = cb0->port_mac_addr >> 16;
1493
1494 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1495 port->logical_port_id, H_PORT_CB0,
1496 EHEA_BMASK_SET(H_PORT_CB0_MAC, 1), cb0);
1497 if (hret != H_SUCCESS) {
1498 ret = -EIO;
1499 goto out_free;
1500 }
1501
1502 memcpy(dev->dev_addr, mac_addr->sa_data, dev->addr_len);
1503
1504 /* Deregister old MAC in pHYP */
1505 ret = ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
1506 if (ret)
1507 goto out_free;
1508
1509 port->mac_addr = cb0->port_mac_addr << 16;
1510
1511 /* Register new MAC in pHYP */
1512 ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
1513 if (ret)
1514 goto out_free;
1515
1516 ret = 0;
1517out_free:
1518 kfree(cb0);
1519out:
1520 return ret;
1521}
1522
1523static void ehea_promiscuous_error(u64 hret, int enable)
1524{
7674a588
TK		 1525 if (hret == H_AUTHORITY)
1526 ehea_info("Hypervisor denied %sabling promiscuous mode",
1527 enable == 1 ? "en" : "dis");
1528 else
1529 ehea_error("failed %sabling promiscuous mode",
1530 enable == 1 ? "en" : "dis");
7a291083
JBT		 1531}
1532
1533static void ehea_promiscuous(struct net_device *dev, int enable)
1534{
1535 struct ehea_port *port = netdev_priv(dev);
1536 struct hcp_ehea_port_cb7 *cb7;
1537 u64 hret;
1538
1539 if ((enable && port->promisc) || (!enable && !port->promisc))
1540 return;
1541
a1d261c5 1542 cb7 = kzalloc(PAGE_SIZE, GFP_ATOMIC);
7a291083
JBT		 1543 if (!cb7) {
1544 ehea_error("no mem for cb7");
1545 goto out;
1546 }
1547
1548 /* Modify Pxs_DUCQPN in CB7 */
1549 cb7->def_uc_qpn = enable == 1 ? port->port_res[0].qp->fw_handle : 0;
1550
1551 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1552 port->logical_port_id,
1553 H_PORT_CB7, H_PORT_CB7_DUCQPN, cb7);
1554 if (hret) {
1555 ehea_promiscuous_error(hret, enable);
1556 goto out;
1557 }
1558
1559 port->promisc = enable;
1560out:
1561 kfree(cb7);
1562 return;
1563}
1564
1565static u64 ehea_multicast_reg_helper(struct ehea_port *port, u64 mc_mac_addr,
1566 u32 hcallid)
1567{
1568 u64 hret;
1569 u8 reg_type;
1570
1571 reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST
1572 | EHEA_BCMC_UNTAGGED;
1573
1574 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1575 port->logical_port_id,
1576 reg_type, mc_mac_addr, 0, hcallid);
1577 if (hret)
1578 goto out;
1579
1580 reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST
1581 | EHEA_BCMC_VLANID_ALL;
1582
1583 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1584 port->logical_port_id,
1585 reg_type, mc_mac_addr, 0, hcallid);
1586out:
1587 return hret;
1588}
1589
1590static int ehea_drop_multicast_list(struct net_device *dev)
1591{
1592 struct ehea_port *port = netdev_priv(dev);
1593 struct ehea_mc_list *mc_entry = port->mc_list;
1594 struct list_head *pos;
1595 struct list_head *temp;
1596 int ret = 0;
1597 u64 hret;
1598
1599 list_for_each_safe(pos, temp, &(port->mc_list->list)) {
1600 mc_entry = list_entry(pos, struct ehea_mc_list, list);
1601
1602 hret = ehea_multicast_reg_helper(port, mc_entry->macaddr,
1603 H_DEREG_BCMC);
1604 if (hret) {
1605 ehea_error("failed deregistering mcast MAC");
1606 ret = -EIO;
1607 }
1608
1609 list_del(pos);
1610 kfree(mc_entry);
1611 }
1612 return ret;
1613}
1614
1615static void ehea_allmulti(struct net_device *dev, int enable)
1616{
1617 struct ehea_port *port = netdev_priv(dev);
1618 u64 hret;
1619
1620 if (!port->allmulti) {
1621 if (enable) {
1622 /* Enable ALLMULTI */
1623 ehea_drop_multicast_list(dev);
1624 hret = ehea_multicast_reg_helper(port, 0, H_REG_BCMC);
1625 if (!hret)
1626 port->allmulti = 1;
1627 else
1628 ehea_error("failed enabling IFF_ALLMULTI");
1629 }
1630 } else
1631 if (!enable) {
1632 /* Disable ALLMULTI */
1633 hret = ehea_multicast_reg_helper(port, 0, H_DEREG_BCMC);
1634 if (!hret)
1635 port->allmulti = 0;
1636 else
1637 ehea_error("failed disabling IFF_ALLMULTI");
1638 }
1639}
1640
1641static void ehea_add_multicast_entry(struct ehea_port* port, u8* mc_mac_addr)
1642{
1643 struct ehea_mc_list *ehea_mcl_entry;
1644 u64 hret;
1645
1e1675cc 1646 ehea_mcl_entry = kzalloc(sizeof(*ehea_mcl_entry), GFP_ATOMIC);
7a291083
JBT		 1647 if (!ehea_mcl_entry) {
1648 ehea_error("no mem for mcl_entry");
1649 return;
1650 }
1651
1652 INIT_LIST_HEAD(&ehea_mcl_entry->list);
1653
1654 memcpy(&ehea_mcl_entry->macaddr, mc_mac_addr, ETH_ALEN);
1655
1656 hret = ehea_multicast_reg_helper(port, ehea_mcl_entry->macaddr,
1657 H_REG_BCMC);
1658 if (!hret)
1659 list_add(&ehea_mcl_entry->list, &port->mc_list->list);
1660 else {
1661 ehea_error("failed registering mcast MAC");
1662 kfree(ehea_mcl_entry);
1663 }
1664}
1665
1666static void ehea_set_multicast_list(struct net_device *dev)
1667{
1668 struct ehea_port *port = netdev_priv(dev);
1669 struct dev_mc_list *k_mcl_entry;
1670 int ret, i;
1671
1672 if (dev->flags & IFF_PROMISC) {
1673 ehea_promiscuous(dev, 1);
1674 return;
1675 }
1676 ehea_promiscuous(dev, 0);
1677
1678 if (dev->flags & IFF_ALLMULTI) {
1679 ehea_allmulti(dev, 1);
1680 return;
1681 }
1682 ehea_allmulti(dev, 0);
1683
1684 if (dev->mc_count) {
1685 ret = ehea_drop_multicast_list(dev);
1686 if (ret) {
1687 /* Dropping the current multicast list failed.
1688 * Enabling ALL_MULTI is the best we can do.
1689 */
1690 ehea_allmulti(dev, 1);
1691 }
1692
1693 if (dev->mc_count > port->adapter->max_mc_mac) {
1694 ehea_info("Mcast registration limit reached (0x%lx). "
1695 "Use ALLMULTI!",
1696 port->adapter->max_mc_mac);
1697 goto out;
1698 }
1699
1700 for (i = 0, k_mcl_entry = dev->mc_list;
1701 i < dev->mc_count;
1702 i++, k_mcl_entry = k_mcl_entry->next) {
1703 ehea_add_multicast_entry(port, k_mcl_entry->dmi_addr);
1704 }
1705 }
1706out:
1707 return;
1708}
1709
1710static int ehea_change_mtu(struct net_device *dev, int new_mtu)
1711{
1712 if ((new_mtu < 68) || (new_mtu > EHEA_MAX_PACKET_SIZE))
1713 return -EINVAL;
1714 dev->mtu = new_mtu;
1715 return 0;
1716}
1717
1718static void ehea_xmit2(struct sk_buff *skb, struct net_device *dev,
1719 struct ehea_swqe *swqe, u32 lkey)
1720{
1721 if (skb->protocol == htons(ETH_P_IP)) {
eddc9ec5 1722 const struct iphdr *iph = ip_hdr(skb);
d1d25aab 1723
7a291083
JBT		 1724 /* IPv4 */
1725 swqe->tx_control |= EHEA_SWQE_CRC
1726 | EHEA_SWQE_IP_CHECKSUM
1727 | EHEA_SWQE_TCP_CHECKSUM
1728 | EHEA_SWQE_IMM_DATA_PRESENT
1729 | EHEA_SWQE_DESCRIPTORS_PRESENT;
1730
1731 write_ip_start_end(swqe, skb);
1732
eddc9ec5 1733 if (iph->protocol == IPPROTO_UDP) {
d1d25aab
JBT		 1734 if ((iph->frag_off & IP_MF)
1735 || (iph->frag_off & IP_OFFSET))
7a291083
JBT		 1736 /* IP fragment, so don't change cs */
1737 swqe->tx_control &= ~EHEA_SWQE_TCP_CHECKSUM;
1738 else
1739 write_udp_offset_end(swqe, skb);
eddc9ec5 1740 } else if (iph->protocol == IPPROTO_TCP) {
7a291083
JBT		 1741 write_tcp_offset_end(swqe, skb);
1742 }
1743
1744 /* icmp (big data) and ip segmentation packets (all other ip
1745 packets) do not require any special handling */
1746
1747 } else {
1748 /* Other Ethernet Protocol */
1749 swqe->tx_control |= EHEA_SWQE_CRC
1750 | EHEA_SWQE_IMM_DATA_PRESENT
1751 | EHEA_SWQE_DESCRIPTORS_PRESENT;
1752 }
1753
1754 write_swqe2_data(skb, dev, swqe, lkey);
1755}
1756
1757static void ehea_xmit3(struct sk_buff *skb, struct net_device *dev,
1758 struct ehea_swqe *swqe)
1759{
1760 int nfrags = skb_shinfo(skb)->nr_frags;
1761 u8 *imm_data = &swqe->u.immdata_nodesc.immediate_data[0];
1762 skb_frag_t *frag;
1763 int i;
1764
1765 if (skb->protocol == htons(ETH_P_IP)) {
eddc9ec5 1766 const struct iphdr *iph = ip_hdr(skb);
d1d25aab 1767
7a291083
JBT		 1768 /* IPv4 */
1769 write_ip_start_end(swqe, skb);
1770
eddc9ec5 1771 if (iph->protocol == IPPROTO_TCP) {
7a291083
JBT		 1772 swqe->tx_control |= EHEA_SWQE_CRC
1773 | EHEA_SWQE_IP_CHECKSUM
1774 | EHEA_SWQE_TCP_CHECKSUM
1775 | EHEA_SWQE_IMM_DATA_PRESENT;
1776
1777 write_tcp_offset_end(swqe, skb);
1778
eddc9ec5 1779 } else if (iph->protocol == IPPROTO_UDP) {
d1d25aab
JBT		 1780 if ((iph->frag_off & IP_MF)
1781 || (iph->frag_off & IP_OFFSET))
7a291083
JBT		 1782 /* IP fragment, so don't change cs */
1783 swqe->tx_control |= EHEA_SWQE_CRC
1784 | EHEA_SWQE_IMM_DATA_PRESENT;
1785 else {
1786 swqe->tx_control |= EHEA_SWQE_CRC
1787 | EHEA_SWQE_IP_CHECKSUM
1788 | EHEA_SWQE_TCP_CHECKSUM
1789 | EHEA_SWQE_IMM_DATA_PRESENT;
1790
1791 write_udp_offset_end(swqe, skb);
1792 }
1793 } else {
1794 /* icmp (big data) and
1795 ip segmentation packets (all other ip packets) */
1796 swqe->tx_control |= EHEA_SWQE_CRC
1797 | EHEA_SWQE_IP_CHECKSUM
1798 | EHEA_SWQE_IMM_DATA_PRESENT;
1799 }
1800 } else {
1801 /* Other Ethernet Protocol */
1802 swqe->tx_control |= EHEA_SWQE_CRC | EHEA_SWQE_IMM_DATA_PRESENT;
1803 }
1804 /* copy (immediate) data */
1805 if (nfrags == 0) {
1806 /* data is in a single piece */
d626f62b 1807 skb_copy_from_linear_data(skb, imm_data, skb->len);
7a291083
JBT		 1808 } else {
1809 /* first copy data from the skb->data buffer ... */
d626f62b
ACM		 1810 skb_copy_from_linear_data(skb, imm_data,
1811 skb->len - skb->data_len);
7a291083
JBT		 1812 imm_data += skb->len - skb->data_len;
1813
1814 /* ... then copy data from the fragments */
1815 for (i = 0; i < nfrags; i++) {
1816 frag = &skb_shinfo(skb)->frags[i];
1817 memcpy(imm_data,
1818 page_address(frag->page) + frag->page_offset,
1819 frag->size);
1820 imm_data += frag->size;
1821 }
1822 }
1823 swqe->immediate_data_length = skb->len;
1824 dev_kfree_skb(skb);
1825}
1826
18604c54
JBT		 1827static inline int ehea_hash_skb(struct sk_buff *skb, int num_qps)
1828{
1829 struct tcphdr *tcp;
1830 u32 tmp;
1831
1832 if ((skb->protocol == htons(ETH_P_IP)) &&
88ca2d07
TK		 1833 (ip_hdr(skb)->protocol == IPPROTO_TCP)) {
1834 tcp = (struct tcphdr*)(skb_network_header(skb) + (ip_hdr(skb)->ihl * 4));
18604c54 1835 tmp = (tcp->source + (tcp->dest << 16)) % 31;
88ca2d07 1836 tmp += ip_hdr(skb)->daddr % 31;
18604c54
JBT		 1837 return tmp % num_qps;
1838 }
1839 else
1840 return 0;
1841}
1842
7a291083
JBT		 1843static int ehea_start_xmit(struct sk_buff *skb, struct net_device *dev)
1844{
1845 struct ehea_port *port = netdev_priv(dev);
1846 struct ehea_swqe *swqe;
1847 unsigned long flags;
1848 u32 lkey;
1849 int swqe_index;
18604c54
JBT		 1850 struct ehea_port_res *pr;
1851
1852 pr = &port->port_res[ehea_hash_skb(skb, port->num_tx_qps)];
1853
18604c54
JBT		 1854 if (!spin_trylock(&pr->xmit_lock))
1855 return NETDEV_TX_BUSY;
1856
1857 if (pr->queue_stopped) {
1858 spin_unlock(&pr->xmit_lock);
1859 return NETDEV_TX_BUSY;
1860 }
7a291083
JBT		 1861
1862 swqe = ehea_get_swqe(pr->qp, &swqe_index);
1863 memset(swqe, 0, SWQE_HEADER_SIZE);
1864 atomic_dec(&pr->swqe_avail);
1865
1866 if (skb->len <= SWQE3_MAX_IMM) {
1867 u32 sig_iv = port->sig_comp_iv;
1868 u32 swqe_num = pr->swqe_id_counter;
1869 ehea_xmit3(skb, dev, swqe);
1870 swqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE3_TYPE)
1871 | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, swqe_num);
1872 if (pr->swqe_ll_count >= (sig_iv - 1)) {
1873 swqe->wr_id |= EHEA_BMASK_SET(EHEA_WR_ID_REFILL,
1874 sig_iv);
1875 swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
1876 pr->swqe_ll_count = 0;
1877 } else
1878 pr->swqe_ll_count += 1;
1879 } else {
1880 swqe->wr_id =
1881 EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE2_TYPE)
1882 | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, pr->swqe_id_counter)
acbddb59 1883 | EHEA_BMASK_SET(EHEA_WR_ID_REFILL, 1)
7a291083
JBT		 1884 | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, pr->sq_skba.index);
1885 pr->sq_skba.arr[pr->sq_skba.index] = skb;
1886
1887 pr->sq_skba.index++;
1888 pr->sq_skba.index &= (pr->sq_skba.len - 1);
1889
1890 lkey = pr->send_mr.lkey;
1891 ehea_xmit2(skb, dev, swqe, lkey);
acbddb59 1892 swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
7a291083
JBT		 1893 }
1894 pr->swqe_id_counter += 1;
1895
1896 if (port->vgrp && vlan_tx_tag_present(skb)) {
1897 swqe->tx_control |= EHEA_SWQE_VLAN_INSERT;
1898 swqe->vlan_tag = vlan_tx_tag_get(skb);
1899 }
1900
1901 if (netif_msg_tx_queued(port)) {
1902 ehea_info("post swqe on QP %d", pr->qp->init_attr.qp_nr);
bff0a55f 1903 ehea_dump(swqe, 512, "swqe");
7a291083
JBT		 1904 }
1905
44c82152
TK		 1906 if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags)))
1907 goto out;
1908
7a291083
JBT		 1909 ehea_post_swqe(pr->qp, swqe);
1910 pr->tx_packets++;
1911
1912 if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) {
1913 spin_lock_irqsave(&pr->netif_queue, flags);
1914 if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) {
acbddb59 1915 pr->p_stats.queue_stopped++;
7a291083
JBT		 1916 netif_stop_queue(dev);
1917 pr->queue_stopped = 1;
1918 }
1919 spin_unlock_irqrestore(&pr->netif_queue, flags);
1920 }
1921 dev->trans_start = jiffies;
1922 spin_unlock(&pr->xmit_lock);
44c82152 1923out:
7a291083
JBT		 1924 return NETDEV_TX_OK;
1925}
1926
1927static void ehea_vlan_rx_register(struct net_device *dev,
1928 struct vlan_group *grp)
1929{
1930 struct ehea_port *port = netdev_priv(dev);
1931 struct ehea_adapter *adapter = port->adapter;
1932 struct hcp_ehea_port_cb1 *cb1;
1933 u64 hret;
1934
1935 port->vgrp = grp;
1936
a1d261c5 1937 cb1 = kzalloc(PAGE_SIZE, GFP_KERNEL);
7a291083
JBT		 1938 if (!cb1) {
1939 ehea_error("no mem for cb1");
1940 goto out;
1941 }
1942
dec590c1 1943 memset(cb1->vlan_filter, 0, sizeof(cb1->vlan_filter));
7a291083
JBT		 1944
1945 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
1946 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
1947 if (hret != H_SUCCESS)
1948 ehea_error("modify_ehea_port failed");
1949
1950 kfree(cb1);
1951out:
1952 return;
1953}
1954
1955static void ehea_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
1956{
1957 struct ehea_port *port = netdev_priv(dev);
1958 struct ehea_adapter *adapter = port->adapter;
1959 struct hcp_ehea_port_cb1 *cb1;
1960 int index;
1961 u64 hret;
1962
a1d261c5 1963 cb1 = kzalloc(PAGE_SIZE, GFP_KERNEL);
7a291083
JBT		 1964 if (!cb1) {
1965 ehea_error("no mem for cb1");
1966 goto out;
1967 }
1968
1969 hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
1970 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
1971 if (hret != H_SUCCESS) {
1972 ehea_error("query_ehea_port failed");
1973 goto out;
1974 }
1975
1976 index = (vid / 64);
dec590c1 1977 cb1->vlan_filter[index] |= ((u64)(0x8000000000000000 >> (vid & 0x3F)));
7a291083
JBT		 1978
1979 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
1980 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
1981 if (hret != H_SUCCESS)
1982 ehea_error("modify_ehea_port failed");
1983out:
1984 kfree(cb1);
1985 return;
1986}
1987
1988static void ehea_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
1989{
1990 struct ehea_port *port = netdev_priv(dev);
1991 struct ehea_adapter *adapter = port->adapter;
1992 struct hcp_ehea_port_cb1 *cb1;
1993 int index;
1994 u64 hret;
1995
5c15bdec 1996 vlan_group_set_device(port->vgrp, vid, NULL);
7a291083 1997
a1d261c5 1998 cb1 = kzalloc(PAGE_SIZE, GFP_KERNEL);
7a291083
JBT		 1999 if (!cb1) {
2000 ehea_error("no mem for cb1");
2001 goto out;
2002 }
2003
2004 hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
2005 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2006 if (hret != H_SUCCESS) {
2007 ehea_error("query_ehea_port failed");
2008 goto out;
2009 }
2010
2011 index = (vid / 64);
dec590c1 2012 cb1->vlan_filter[index] &= ~((u64)(0x8000000000000000 >> (vid & 0x3F)));
7a291083
JBT		 2013
2014 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
2015 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2016 if (hret != H_SUCCESS)
2017 ehea_error("modify_ehea_port failed");
2018out:
2019 kfree(cb1);
2020 return;
2021}
2022
2023int ehea_activate_qp(struct ehea_adapter *adapter, struct ehea_qp *qp)
2024{
2025 int ret = -EIO;
2026 u64 hret;
2027 u16 dummy16 = 0;
2028 u64 dummy64 = 0;
2029 struct hcp_modify_qp_cb0* cb0;
2030
a1d261c5 2031 cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL);
7a291083
JBT		 2032 if (!cb0) {
2033 ret = -ENOMEM;
2034 goto out;
2035 }
2036
2037 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2038 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2039 if (hret != H_SUCCESS) {
2040 ehea_error("query_ehea_qp failed (1)");
2041 goto out;
2042 }
2043
2044 cb0->qp_ctl_reg = H_QP_CR_STATE_INITIALIZED;
2045 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2046 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2047 &dummy64, &dummy64, &dummy16, &dummy16);
2048 if (hret != H_SUCCESS) {
2049 ehea_error("modify_ehea_qp failed (1)");
2050 goto out;
2051 }
2052
2053 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2054 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2055 if (hret != H_SUCCESS) {
2056 ehea_error("query_ehea_qp failed (2)");
2057 goto out;
2058 }
2059
2060 cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_INITIALIZED;
2061 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2062 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2063 &dummy64, &dummy64, &dummy16, &dummy16);
2064 if (hret != H_SUCCESS) {
2065 ehea_error("modify_ehea_qp failed (2)");
2066 goto out;
2067 }
2068
2069 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2070 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2071 if (hret != H_SUCCESS) {
2072 ehea_error("query_ehea_qp failed (3)");
2073 goto out;
2074 }
2075
2076 cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_RDY2SND;
2077 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2078 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2079 &dummy64, &dummy64, &dummy16, &dummy16);
2080 if (hret != H_SUCCESS) {
2081 ehea_error("modify_ehea_qp failed (3)");
2082 goto out;
2083 }
2084
2085 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2086 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2087 if (hret != H_SUCCESS) {
2088 ehea_error("query_ehea_qp failed (4)");
2089 goto out;
2090 }
2091
2092 ret = 0;
2093out:
2094 kfree(cb0);
2095 return ret;
2096}
2097
2098static int ehea_port_res_setup(struct ehea_port *port, int def_qps,
2099 int add_tx_qps)
2100{
2101 int ret, i;
2102 struct port_res_cfg pr_cfg, pr_cfg_small_rx;
2103 enum ehea_eq_type eq_type = EHEA_EQ;
2104
2105 port->qp_eq = ehea_create_eq(port->adapter, eq_type,
2106 EHEA_MAX_ENTRIES_EQ, 1);
2107 if (!port->qp_eq) {
2108 ret = -EINVAL;
2109 ehea_error("ehea_create_eq failed (qp_eq)");
2110 goto out_kill_eq;
2111 }
2112
2113 pr_cfg.max_entries_rcq = rq1_entries + rq2_entries + rq3_entries;
18604c54 2114 pr_cfg.max_entries_scq = sq_entries * 2;
7a291083
JBT		 2115 pr_cfg.max_entries_sq = sq_entries;
2116 pr_cfg.max_entries_rq1 = rq1_entries;
2117 pr_cfg.max_entries_rq2 = rq2_entries;
2118 pr_cfg.max_entries_rq3 = rq3_entries;
2119
2120 pr_cfg_small_rx.max_entries_rcq = 1;
2121 pr_cfg_small_rx.max_entries_scq = sq_entries;
2122 pr_cfg_small_rx.max_entries_sq = sq_entries;
2123 pr_cfg_small_rx.max_entries_rq1 = 1;
2124 pr_cfg_small_rx.max_entries_rq2 = 1;
2125 pr_cfg_small_rx.max_entries_rq3 = 1;
2126
2127 for (i = 0; i < def_qps; i++) {
2128 ret = ehea_init_port_res(port, &port->port_res[i], &pr_cfg, i);
2129 if (ret)
2130 goto out_clean_pr;
2131 }
2132 for (i = def_qps; i < def_qps + add_tx_qps; i++) {
2133 ret = ehea_init_port_res(port, &port->port_res[i],
2134 &pr_cfg_small_rx, i);
2135 if (ret)
2136 goto out_clean_pr;
2137 }
2138
2139 return 0;
2140
2141out_clean_pr:
2142 while (--i >= 0)
2143 ehea_clean_portres(port, &port->port_res[i]);
2144
2145out_kill_eq:
2146 ehea_destroy_eq(port->qp_eq);
2147 return ret;
2148}
2149
2150static int ehea_clean_all_portres(struct ehea_port *port)
2151{
2152 int ret = 0;
2153 int i;
2154
2155 for(i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
2156 ret |= ehea_clean_portres(port, &port->port_res[i]);
2157
2158 ret |= ehea_destroy_eq(port->qp_eq);
2159
2160 return ret;
2161}
2162
35cf2e2e 2163static void ehea_remove_adapter_mr(struct ehea_adapter *adapter)
1211bb6d 2164{
35cf2e2e
TK		 2165 if (adapter->active_ports)
2166 return;
1211bb6d
TK		 2167
2168 ehea_rem_mr(&adapter->mr);
2169}
2170
35cf2e2e 2171static int ehea_add_adapter_mr(struct ehea_adapter *adapter)
1211bb6d 2172{
35cf2e2e
TK		 2173 if (adapter->active_ports)
2174 return 0;
1211bb6d
TK		 2175
2176 return ehea_reg_kernel_mr(adapter, &adapter->mr);
2177}
2178
7a291083
JBT		 2179static int ehea_up(struct net_device *dev)
2180{
2181 int ret, i;
2182 struct ehea_port *port = netdev_priv(dev);
7a291083
JBT		 2183
2184 if (port->state == EHEA_PORT_UP)
2185 return 0;
2186
2187 ret = ehea_port_res_setup(port, port->num_def_qps,
2188 port->num_add_tx_qps);
2189 if (ret) {
2190 ehea_error("port_res_failed");
2191 goto out;
2192 }
2193
2194 /* Set default QP for this port */
2195 ret = ehea_configure_port(port);
2196 if (ret) {
2197 ehea_error("ehea_configure_port failed. ret:%d", ret);
2198 goto out_clean_pr;
2199 }
2200
7a291083
JBT		 2201 ret = ehea_reg_interrupts(dev);
2202 if (ret) {
f9e29228
TK		 2203 ehea_error("reg_interrupts failed. ret:%d", ret);
2204 goto out_clean_pr;
7a291083
JBT		 2205 }
2206
2207 for(i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
2208 ret = ehea_activate_qp(port->adapter, port->port_res[i].qp);
2209 if (ret) {
2210 ehea_error("activate_qp failed");
2211 goto out_free_irqs;
2212 }
2213 }
2214
2215 for(i = 0; i < port->num_def_qps; i++) {
2216 ret = ehea_fill_port_res(&port->port_res[i]);
2217 if (ret) {
2218 ehea_error("out_free_irqs");
2219 goto out_free_irqs;
2220 }
2221 }
2222
2223 ret = 0;
2224 port->state = EHEA_PORT_UP;
2225 goto out;
2226
2227out_free_irqs:
2228 ehea_free_interrupts(dev);
2229
7a291083
JBT		 2230out_clean_pr:
2231 ehea_clean_all_portres(port);
2232out:
44c82152
TK		 2233 if (ret)
2234 ehea_info("Failed starting %s. ret=%i", dev->name, ret);
2235
7a291083
JBT		 2236 return ret;
2237}
2238
2239static int ehea_open(struct net_device *dev)
2240{
2241 int ret;
2242 struct ehea_port *port = netdev_priv(dev);
2243
2244 down(&port->port_lock);
2245
2246 if (netif_msg_ifup(port))
2247 ehea_info("enabling port %s", dev->name);
2248
2249 ret = ehea_up(dev);
2250 if (!ret)
2251 netif_start_queue(dev);
2252
2253 up(&port->port_lock);
2254
2255 return ret;
2256}
2257
2258static int ehea_down(struct net_device *dev)
2259{
2260 int ret, i;
2261 struct ehea_port *port = netdev_priv(dev);
2262
2263 if (port->state == EHEA_PORT_DOWN)
2264 return 0;
2265
2266 ehea_drop_multicast_list(dev);
2267 ehea_free_interrupts(dev);
2268
18604c54 2269 for (i = 0; i < port->num_def_qps; i++)
e542aa6b 2270 while (test_bit(__LINK_STATE_RX_SCHED,
18604c54
JBT		 2271 &port->port_res[i].d_netdev->state))
2272 msleep(1);
7a291083 2273
7a291083 2274 port->state = EHEA_PORT_DOWN;
44c82152
TK		 2275
2276 ret = ehea_clean_all_portres(port);
2277 if (ret)
2278 ehea_info("Failed freeing resources for %s. ret=%i",
2279 dev->name, ret);
2280
7a291083
JBT		 2281 return ret;
2282}
2283
2284static int ehea_stop(struct net_device *dev)
2285{
2286 int ret;
2287 struct ehea_port *port = netdev_priv(dev);
2288
2289 if (netif_msg_ifdown(port))
2290 ehea_info("disabling port %s", dev->name);
2291
2292 flush_workqueue(port->adapter->ehea_wq);
2293 down(&port->port_lock);
2294 netif_stop_queue(dev);
2295 ret = ehea_down(dev);
2296 up(&port->port_lock);
2297 return ret;
2298}
2299
c4028958 2300static void ehea_reset_port(struct work_struct *work)
7a291083
JBT		 2301{
2302 int ret;
c4028958
DH		 2303 struct ehea_port *port =
2304 container_of(work, struct ehea_port, reset_task);
2305 struct net_device *dev = port->netdev;
7a291083
JBT		 2306
2307 port->resets++;
2308 down(&port->port_lock);
2309 netif_stop_queue(dev);
2310 netif_poll_disable(dev);
2311
44c82152 2312 ehea_down(dev);
7a291083
JBT		 2313
2314 ret = ehea_up(dev);
44c82152 2315 if (ret)
7a291083 2316 goto out;
7a291083
JBT		 2317
2318 if (netif_msg_timer(port))
2319 ehea_info("Device %s resetted successfully", dev->name);
2320
2321 netif_poll_enable(dev);
2322 netif_wake_queue(dev);
2323out:
2324 up(&port->port_lock);
2325 return;
2326}
2327
44c82152
TK		 2328static void ehea_rereg_mrs(struct work_struct *work)
2329{
2330 int ret, i;
2331 struct ehea_adapter *adapter;
2332
2333 ehea_info("LPAR memory enlarged - re-initializing driver");
2334
2335 list_for_each_entry(adapter, &adapter_list, list)
2336 if (adapter->active_ports) {
2337 /* Shutdown all ports */
2338 for (i = 0; i < EHEA_MAX_PORTS; i++) {
2339 struct ehea_port *port = adapter->port[i];
2340
2341 if (port) {
2342 struct net_device *dev = port->netdev;
2343
2344 if (dev->flags & IFF_UP) {
2345 ehea_info("stopping %s",
2346 dev->name);
2347 down(&port->port_lock);
2348 netif_stop_queue(dev);
2349 netif_poll_disable(dev);
2350 ehea_down(dev);
2351 up(&port->port_lock);
2352 }
2353 }
2354 }
2355
2356 /* Unregister old memory region */
2357 ret = ehea_rem_mr(&adapter->mr);
2358 if (ret) {
2359 ehea_error("unregister MR failed - driver"
2360 " inoperable!");
2361 goto out;
2362 }
2363 }
2364
2365 ehea_destroy_busmap();
2366
2367 ret = ehea_create_busmap();
2368 if (ret)
2369 goto out;
2370
2371 clear_bit(__EHEA_STOP_XFER, &ehea_driver_flags);
2372
2373 list_for_each_entry(adapter, &adapter_list, list)
2374 if (adapter->active_ports) {
2375 /* Register new memory region */
2376 ret = ehea_reg_kernel_mr(adapter, &adapter->mr);
2377 if (ret) {
2378 ehea_error("register MR failed - driver"
2379 " inoperable!");
2380 goto out;
2381 }
2382
2383 /* Restart all ports */
2384 for (i = 0; i < EHEA_MAX_PORTS; i++) {
2385 struct ehea_port *port = adapter->port[i];
2386
2387 if (port) {
2388 struct net_device *dev = port->netdev;
2389
2390 if (dev->flags & IFF_UP) {
2391 ehea_info("restarting %s",
2392 dev->name);
2393 down(&port->port_lock);
2394
2395 ret = ehea_up(dev);
2396 if (!ret) {
2397 netif_poll_enable(dev);
2398 netif_wake_queue(dev);
2399 }
2400
2401 up(&port->port_lock);
2402 }
2403 }
2404 }
2405 }
2406out:
2407 return;
2408}
2409
7a291083
JBT		 2410static void ehea_tx_watchdog(struct net_device *dev)
2411{
2412 struct ehea_port *port = netdev_priv(dev);
2413
2414 if (netif_carrier_ok(dev))
2415 queue_work(port->adapter->ehea_wq, &port->reset_task);
2416}
2417
2418int ehea_sense_adapter_attr(struct ehea_adapter *adapter)
2419{
2420 struct hcp_query_ehea *cb;
2421 u64 hret;
2422 int ret;
2423
a1d261c5 2424 cb = kzalloc(PAGE_SIZE, GFP_KERNEL);
7a291083
JBT		 2425 if (!cb) {
2426 ret = -ENOMEM;
2427 goto out;
2428 }
2429
2430 hret = ehea_h_query_ehea(adapter->handle, cb);
2431
2432 if (hret != H_SUCCESS) {
2433 ret = -EIO;
2434 goto out_herr;
2435 }
2436
7a291083
JBT		 2437 adapter->max_mc_mac = cb->max_mc_mac - 1;
2438 ret = 0;
2439
2440out_herr:
2441 kfree(cb);
2442out:
2443 return ret;
2444}
2445
1acf2318 2446int ehea_get_jumboframe_status(struct ehea_port *port, int *jumbo)
7a291083 2447{
7a291083 2448 struct hcp_ehea_port_cb4 *cb4;
1acf2318
JBT		 2449 u64 hret;
2450 int ret = 0;
7a291083 2451
1acf2318 2452 *jumbo = 0;
7a291083 2453
1acf2318 2454 /* (Try to) enable *jumbo frames */
a1d261c5 2455 cb4 = kzalloc(PAGE_SIZE, GFP_KERNEL);
7a291083
JBT		 2456 if (!cb4) {
2457 ehea_error("no mem for cb4");
1acf2318
JBT		 2458 ret = -ENOMEM;
2459 goto out;
7a291083 2460 } else {
1acf2318 2461 hret = ehea_h_query_ehea_port(port->adapter->handle,
9c750b7d
TK		 2462 port->logical_port_id,
2463 H_PORT_CB4,
2464 H_PORT_CB4_JUMBO, cb4);
9c750b7d
TK		 2465 if (hret == H_SUCCESS) {
2466 if (cb4->jumbo_frame)
1acf2318 2467 *jumbo = 1;
9c750b7d
TK		 2468 else {
2469 cb4->jumbo_frame = 1;
1acf2318
JBT		 2470 hret = ehea_h_modify_ehea_port(port->adapter->
2471 handle,
9c750b7d 2472 port->
1acf2318 2473 logical_port_id,
9c750b7d
TK		 2474 H_PORT_CB4,
2475 H_PORT_CB4_JUMBO,
2476 cb4);
2477 if (hret == H_SUCCESS)
1acf2318 2478 *jumbo = 1;
9c750b7d 2479 }
1acf2318
JBT		 2480 } else
2481 ret = -EINVAL;
2482
7a291083
JBT		 2483 kfree(cb4);
2484 }
1acf2318
JBT		 2485out:
2486 return ret;
2487}
2488
2489static ssize_t ehea_show_port_id(struct device *dev,
2490 struct device_attribute *attr, char *buf)
2491{
2492 struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev);
a8e34fda 2493 return sprintf(buf, "%d", port->logical_port_id);
1acf2318
JBT		 2494}
2495
2496static DEVICE_ATTR(log_port_id, S_IRUSR | S_IRGRP | S_IROTH, ehea_show_port_id,
2497 NULL);
2498
2499static void __devinit logical_port_release(struct device *dev)
2500{
2501 struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev);
2502 of_node_put(port->ofdev.node);
2503}
2504
d1dea38d 2505static int ehea_driver_sysfs_add(struct device *dev,
d1d25aab 2506 struct device_driver *driver)
d1dea38d
TK		 2507{
2508 int ret;
2509
2510 ret = sysfs_create_link(&driver->kobj, &dev->kobj,
2511 kobject_name(&dev->kobj));
2512 if (ret == 0) {
2513 ret = sysfs_create_link(&dev->kobj, &driver->kobj,
2514 "driver");
2515 if (ret)
2516 sysfs_remove_link(&driver->kobj,
2517 kobject_name(&dev->kobj));
2518 }
2519 return ret;
2520}
2521
2522static void ehea_driver_sysfs_remove(struct device *dev,
d1d25aab 2523 struct device_driver *driver)
d1dea38d
TK		 2524{
2525 struct device_driver *drv = driver;
2526
2527 if (drv) {
2528 sysfs_remove_link(&drv->kobj, kobject_name(&dev->kobj));
2529 sysfs_remove_link(&dev->kobj, "driver");
2530 }
2531}
2532
1acf2318
JBT		 2533static struct device *ehea_register_port(struct ehea_port *port,
2534 struct device_node *dn)
2535{
2536 int ret;
2537
2538 port->ofdev.node = of_node_get(dn);
2539 port->ofdev.dev.parent = &port->adapter->ebus_dev->ofdev.dev;
d1dea38d 2540 port->ofdev.dev.bus = &ibmebus_bus_type;
1acf2318 2541
d1dea38d 2542 sprintf(port->ofdev.dev.bus_id, "port%d", port_name_cnt++);
1acf2318
JBT		 2543 port->ofdev.dev.release = logical_port_release;
2544
2545 ret = of_device_register(&port->ofdev);
2546 if (ret) {
2547 ehea_error("failed to register device. ret=%d", ret);
2548 goto out;
2549 }
2550
2551 ret = device_create_file(&port->ofdev.dev, &dev_attr_log_port_id);
d1d25aab 2552 if (ret) {
1acf2318
JBT		 2553 ehea_error("failed to register attributes, ret=%d", ret);
2554 goto out_unreg_of_dev;
2555 }
e542aa6b 2556
d1dea38d
TK		 2557 ret = ehea_driver_sysfs_add(&port->ofdev.dev, &ehea_driver.driver);
2558 if (ret) {
2559 ehea_error("failed to register sysfs driver link");
2560 goto out_rem_dev_file;
2561 }
2562
1acf2318
JBT		 2563 return &port->ofdev.dev;
2564
d1dea38d
TK		 2565out_rem_dev_file:
2566 device_remove_file(&port->ofdev.dev, &dev_attr_log_port_id);
1acf2318
JBT		 2567out_unreg_of_dev:
2568 of_device_unregister(&port->ofdev);
2569out:
2570 return NULL;
2571}
2572
2573static void ehea_unregister_port(struct ehea_port *port)
2574{
d1dea38d 2575 ehea_driver_sysfs_remove(&port->ofdev.dev, &ehea_driver.driver);
1acf2318
JBT		 2576 device_remove_file(&port->ofdev.dev, &dev_attr_log_port_id);
2577 of_device_unregister(&port->ofdev);
2578}
2579
2580struct ehea_port *ehea_setup_single_port(struct ehea_adapter *adapter,
2581 u32 logical_port_id,
2582 struct device_node *dn)
2583{
2584 int ret;
2585 struct net_device *dev;
2586 struct ehea_port *port;
2587 struct device *port_dev;
2588 int jumbo;
2589
2590 /* allocate memory for the port structures */
2591 dev = alloc_etherdev(sizeof(struct ehea_port));
2592
2593 if (!dev) {
2594 ehea_error("no mem for net_device");
2595 ret = -ENOMEM;
2596 goto out_err;
2597 }
2598
2599 port = netdev_priv(dev);
2600
2601 sema_init(&port->port_lock, 1);
2602 port->state = EHEA_PORT_DOWN;
2603 port->sig_comp_iv = sq_entries / 10;
2604
2605 port->adapter = adapter;
2606 port->netdev = dev;
2607 port->logical_port_id = logical_port_id;
2608
2609 port->msg_enable = netif_msg_init(msg_level, EHEA_MSG_DEFAULT);
2610
2611 port->mc_list = kzalloc(sizeof(struct ehea_mc_list), GFP_KERNEL);
2612 if (!port->mc_list) {
2613 ret = -ENOMEM;
2614 goto out_free_ethdev;
2615 }
2616
2617 INIT_LIST_HEAD(&port->mc_list->list);
2618
2619 ret = ehea_sense_port_attr(port);
2620 if (ret)
2621 goto out_free_mc_list;
2622
2623 port_dev = ehea_register_port(port, dn);
2624 if (!port_dev)
2625 goto out_free_mc_list;
2626
2627 SET_NETDEV_DEV(dev, port_dev);
7a291083
JBT		 2628
2629 /* initialize net_device structure */
2630 SET_MODULE_OWNER(dev);
2631
2632 memcpy(dev->dev_addr, &port->mac_addr, ETH_ALEN);
2633
2634 dev->open = ehea_open;
8d22c971
JBT		 2635 dev->poll = ehea_poll_firstqueue;
2636#ifdef CONFIG_NET_POLL_CONTROLLER
2637 dev->poll_controller = ehea_netpoll;
2638#endif
7a291083
JBT		 2639 dev->weight = 64;
2640 dev->stop = ehea_stop;
2641 dev->hard_start_xmit = ehea_start_xmit;
2642 dev->get_stats = ehea_get_stats;
2643 dev->set_multicast_list = ehea_set_multicast_list;
2644 dev->set_mac_address = ehea_set_mac_addr;
2645 dev->change_mtu = ehea_change_mtu;
2646 dev->vlan_rx_register = ehea_vlan_rx_register;
2647 dev->vlan_rx_add_vid = ehea_vlan_rx_add_vid;
2648 dev->vlan_rx_kill_vid = ehea_vlan_rx_kill_vid;
2649 dev->features = NETIF_F_SG | NETIF_F_FRAGLIST | NETIF_F_TSO
2650 | NETIF_F_HIGHDMA | NETIF_F_HW_CSUM | NETIF_F_HW_VLAN_TX
2651 | NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_FILTER
2652 | NETIF_F_LLTX;
2653 dev->tx_timeout = &ehea_tx_watchdog;
2654 dev->watchdog_timeo = EHEA_WATCH_DOG_TIMEOUT;
2655
c4028958 2656 INIT_WORK(&port->reset_task, ehea_reset_port);
7a291083 2657
f9e29228
TK		 2658 ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
2659 if (ret) {
2660 ret = -EIO;
2661 goto out_unreg_port;
2662 }
2663
7a291083
JBT		 2664 ehea_set_ethtool_ops(dev);
2665
2666 ret = register_netdev(dev);
2667 if (ret) {
2668 ehea_error("register_netdev failed. ret=%d", ret);
f9e29228 2669 goto out_dereg_bc;
7a291083
JBT		 2670 }
2671
1acf2318 2672 ret = ehea_get_jumboframe_status(port, &jumbo);
e542aa6b 2673 if (ret)
1acf2318
JBT		 2674 ehea_error("failed determining jumbo frame status for %s",
2675 port->netdev->name);
2676
9c750b7d
TK		 2677 ehea_info("%s: Jumbo frames are %sabled", dev->name,
2678 jumbo == 1 ? "en" : "dis");
2679
44c82152
TK		 2680 adapter->active_ports++;
2681
1acf2318 2682 return port;
7a291083 2683
f9e29228
TK		 2684out_dereg_bc:
2685 ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
2686
1acf2318
JBT		 2687out_unreg_port:
2688 ehea_unregister_port(port);
2689
2690out_free_mc_list:
7a291083 2691 kfree(port->mc_list);
1acf2318
JBT		 2692
2693out_free_ethdev:
2694 free_netdev(dev);
2695
2696out_err:
2697 ehea_error("setting up logical port with id=%d failed, ret=%d",
2698 logical_port_id, ret);
2699 return NULL;
2700}
2701
2702static void ehea_shutdown_single_port(struct ehea_port *port)
2703{
2704 unregister_netdev(port->netdev);
2705 ehea_unregister_port(port);
f9e29228 2706 ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
1acf2318
JBT		 2707 kfree(port->mc_list);
2708 free_netdev(port->netdev);
44c82152 2709 port->adapter->active_ports--;
7a291083
JBT		 2710}
2711
2712static int ehea_setup_ports(struct ehea_adapter *adapter)
2713{
1acf2318
JBT		 2714 struct device_node *lhea_dn;
2715 struct device_node *eth_dn = NULL;
d1d25aab 2716
9f9a3b8a 2717 const u32 *dn_log_port_id;
1acf2318
JBT		 2718 int i = 0;
2719
2720 lhea_dn = adapter->ebus_dev->ofdev.node;
1eef4e04 2721 while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) {
e542aa6b 2722
40cd3a45 2723 dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no",
d1d25aab 2724 NULL);
1acf2318
JBT		 2725 if (!dn_log_port_id) {
2726 ehea_error("bad device node: eth_dn name=%s",
2727 eth_dn->full_name);
2728 continue;
2729 }
7a291083 2730
1211bb6d
TK		 2731 if (ehea_add_adapter_mr(adapter)) {
2732 ehea_error("creating MR failed");
2733 of_node_put(eth_dn);
2734 return -EIO;
2735 }
2736
1acf2318
JBT		 2737 adapter->port[i] = ehea_setup_single_port(adapter,
2738 *dn_log_port_id,
2739 eth_dn);
7a291083 2740 if (adapter->port[i])
1acf2318 2741 ehea_info("%s -> logical port id #%d",
e542aa6b 2742 adapter->port[i]->netdev->name,
1acf2318 2743 *dn_log_port_id);
1211bb6d
TK		 2744 else
2745 ehea_remove_adapter_mr(adapter);
2746
1acf2318 2747 i++;
1eef4e04 2748 };
7a291083 2749
1211bb6d 2750 return 0;
1acf2318
JBT		 2751}
2752
e542aa6b
JBT		 2753static struct device_node *ehea_get_eth_dn(struct ehea_adapter *adapter,
2754 u32 logical_port_id)
1acf2318
JBT		 2755{
2756 struct device_node *lhea_dn;
2757 struct device_node *eth_dn = NULL;
9f9a3b8a 2758 const u32 *dn_log_port_id;
1acf2318
JBT		 2759
2760 lhea_dn = adapter->ebus_dev->ofdev.node;
1eef4e04 2761 while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) {
e542aa6b 2762
40cd3a45 2763 dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no",
d1d25aab 2764 NULL);
1acf2318
JBT		 2765 if (dn_log_port_id)
2766 if (*dn_log_port_id == logical_port_id)
2767 return eth_dn;
1eef4e04 2768 };
1acf2318
JBT		 2769
2770 return NULL;
2771}
2772
2773static ssize_t ehea_probe_port(struct device *dev,
2774 struct device_attribute *attr,
2775 const char *buf, size_t count)
2776{
2777 struct ehea_adapter *adapter = dev->driver_data;
2778 struct ehea_port *port;
2779 struct device_node *eth_dn = NULL;
2780 int i;
2781
2782 u32 logical_port_id;
2783
a8e34fda 2784 sscanf(buf, "%d", &logical_port_id);
1acf2318
JBT		 2785
2786 port = ehea_get_port(adapter, logical_port_id);
2787
2788 if (port) {
2789 ehea_info("adding port with logical port id=%d failed. port "
2790 "already configured as %s.", logical_port_id,
2791 port->netdev->name);
2792 return -EINVAL;
7a291083 2793 }
e542aa6b 2794
1acf2318 2795 eth_dn = ehea_get_eth_dn(adapter, logical_port_id);
7a291083 2796
1acf2318
JBT		 2797 if (!eth_dn) {
2798 ehea_info("no logical port with id %d found", logical_port_id);
2799 return -EINVAL;
2800 }
e542aa6b 2801
1211bb6d
TK		 2802 if (ehea_add_adapter_mr(adapter)) {
2803 ehea_error("creating MR failed");
2804 return -EIO;
2805 }
2806
1acf2318 2807 port = ehea_setup_single_port(adapter, logical_port_id, eth_dn);
7a291083 2808
1eef4e04
JBT		 2809 of_node_put(eth_dn);
2810
1acf2318
JBT		 2811 if (port) {
2812 for (i=0; i < EHEA_MAX_PORTS; i++)
2813 if (!adapter->port[i]) {
2814 adapter->port[i] = port;
2815 break;
2816 }
7a291083 2817
1acf2318
JBT		 2818 ehea_info("added %s (logical port id=%d)", port->netdev->name,
2819 logical_port_id);
1211bb6d
TK		 2820 } else {
2821 ehea_remove_adapter_mr(adapter);
e542aa6b 2822 return -EIO;
1211bb6d 2823 }
7a291083 2824
1acf2318
JBT		 2825 return (ssize_t) count;
2826}
2827
2828static ssize_t ehea_remove_port(struct device *dev,
2829 struct device_attribute *attr,
2830 const char *buf, size_t count)
2831{
2832 struct ehea_adapter *adapter = dev->driver_data;
2833 struct ehea_port *port;
2834 int i;
2835 u32 logical_port_id;
2836
a8e34fda 2837 sscanf(buf, "%d", &logical_port_id);
1acf2318
JBT		 2838
2839 port = ehea_get_port(adapter, logical_port_id);
2840
2841 if (port) {
2842 ehea_info("removed %s (logical port id=%d)", port->netdev->name,
2843 logical_port_id);
2844
2845 ehea_shutdown_single_port(port);
2846
2847 for (i=0; i < EHEA_MAX_PORTS; i++)
2848 if (adapter->port[i] == port) {
2849 adapter->port[i] = NULL;
2850 break;
2851 }
2852 } else {
2853 ehea_error("removing port with logical port id=%d failed. port "
2854 "not configured.", logical_port_id);
2855 return -EINVAL;
2856 }
2857
1211bb6d
TK		 2858 ehea_remove_adapter_mr(adapter);
2859
1acf2318
JBT		 2860 return (ssize_t) count;
2861}
2862
2863static DEVICE_ATTR(probe_port, S_IWUSR, NULL, ehea_probe_port);
2864static DEVICE_ATTR(remove_port, S_IWUSR, NULL, ehea_remove_port);
2865
2866int ehea_create_device_sysfs(struct ibmebus_dev *dev)
2867{
2868 int ret = device_create_file(&dev->ofdev.dev, &dev_attr_probe_port);
2869 if (ret)
2870 goto out;
2871
2872 ret = device_create_file(&dev->ofdev.dev, &dev_attr_remove_port);
2873out:
7a291083
JBT		 2874 return ret;
2875}
2876
1acf2318
JBT		 2877void ehea_remove_device_sysfs(struct ibmebus_dev *dev)
2878{
2879 device_remove_file(&dev->ofdev.dev, &dev_attr_probe_port);
2880 device_remove_file(&dev->ofdev.dev, &dev_attr_remove_port);
2881}
2882
2883static int __devinit ehea_probe_adapter(struct ibmebus_dev *dev,
2884 const struct of_device_id *id)
7a291083
JBT		 2885{
2886 struct ehea_adapter *adapter;
9f9a3b8a 2887 const u64 *adapter_handle;
7a291083
JBT		 2888 int ret;
2889
1eef4e04
JBT		 2890 if (!dev || !dev->ofdev.node) {
2891 ehea_error("Invalid ibmebus device probed");
2892 return -EINVAL;
2893 }
2894
7a291083
JBT		 2895 adapter = kzalloc(sizeof(*adapter), GFP_KERNEL);
2896 if (!adapter) {
2897 ret = -ENOMEM;
2898 dev_err(&dev->ofdev.dev, "no mem for ehea_adapter\n");
2899 goto out;
2900 }
2901
44c82152
TK		 2902 list_add(&adapter->list, &adapter_list);
2903
1acf2318
JBT		 2904 adapter->ebus_dev = dev;
2905
40cd3a45 2906 adapter_handle = of_get_property(dev->ofdev.node, "ibm,hea-handle",
d1d25aab 2907 NULL);
061bf3cd
TK		 2908 if (adapter_handle)
2909 adapter->handle = *adapter_handle;
2910
2911 if (!adapter->handle) {
7a291083
JBT		 2912 dev_err(&dev->ofdev.dev, "failed getting handle for adapter"
2913 " '%s'\n", dev->ofdev.node->full_name);
2914 ret = -ENODEV;
2915 goto out_free_ad;
2916 }
2917
7a291083
JBT		 2918 adapter->pd = EHEA_PD_ID;
2919
2920 dev->ofdev.dev.driver_data = adapter;
2921
7a291083
JBT		 2922
2923 /* initialize adapter and ports */
2924 /* get adapter properties */
2925 ret = ehea_sense_adapter_attr(adapter);
2926 if (ret) {
2927 dev_err(&dev->ofdev.dev, "sense_adapter_attr failed: %d", ret);
1211bb6d 2928 goto out_free_ad;
7a291083 2929 }
7a291083
JBT		 2930
2931 adapter->neq = ehea_create_eq(adapter,
2932 EHEA_NEQ, EHEA_MAX_ENTRIES_EQ, 1);
2933 if (!adapter->neq) {
1eef4e04 2934 ret = -EIO;
7a291083 2935 dev_err(&dev->ofdev.dev, "NEQ creation failed");
1211bb6d 2936 goto out_free_ad;
7a291083
JBT		 2937 }
2938
2939 tasklet_init(&adapter->neq_tasklet, ehea_neq_tasklet,
2940 (unsigned long)adapter);
2941
2942 ret = ibmebus_request_irq(NULL, adapter->neq->attr.ist1,
38515e90 2943 ehea_interrupt_neq, IRQF_DISABLED,
7a291083
JBT		 2944 "ehea_neq", adapter);
2945 if (ret) {
2946 dev_err(&dev->ofdev.dev, "requesting NEQ IRQ failed");
2947 goto out_kill_eq;
2948 }
2949
2950 adapter->ehea_wq = create_workqueue("ehea_wq");
1eef4e04
JBT		 2951 if (!adapter->ehea_wq) {
2952 ret = -EIO;
7a291083 2953 goto out_free_irq;
1eef4e04 2954 }
7a291083 2955
1eef4e04
JBT		 2956 ret = ehea_create_device_sysfs(dev);
2957 if (ret)
1acf2318
JBT		 2958 goto out_kill_wq;
2959
7a291083
JBT		 2960 ret = ehea_setup_ports(adapter);
2961 if (ret) {
2962 dev_err(&dev->ofdev.dev, "setup_ports failed");
1acf2318 2963 goto out_rem_dev_sysfs;
7a291083
JBT		 2964 }
2965
2966 ret = 0;
2967 goto out;
2968
1acf2318
JBT		 2969out_rem_dev_sysfs:
2970 ehea_remove_device_sysfs(dev);
2971
7a291083
JBT		 2972out_kill_wq:
2973 destroy_workqueue(adapter->ehea_wq);
2974
2975out_free_irq:
2976 ibmebus_free_irq(NULL, adapter->neq->attr.ist1, adapter);
2977
2978out_kill_eq:
2979 ehea_destroy_eq(adapter->neq);
2980
7a291083
JBT		 2981out_free_ad:
2982 kfree(adapter);
2983out:
2984 return ret;
2985}
2986
7a291083
JBT		 2987static int __devexit ehea_remove(struct ibmebus_dev *dev)
2988{
2989 struct ehea_adapter *adapter = dev->ofdev.dev.driver_data;
7a291083
JBT		 2990 int i;
2991
1acf2318 2992 for (i = 0; i < EHEA_MAX_PORTS; i++)
7a291083
JBT		 2993 if (adapter->port[i]) {
2994 ehea_shutdown_single_port(adapter->port[i]);
2995 adapter->port[i] = NULL;
2996 }
1acf2318
JBT		 2997
2998 ehea_remove_device_sysfs(dev);
2999
7a291083
JBT		 3000 destroy_workqueue(adapter->ehea_wq);
3001
3002 ibmebus_free_irq(NULL, adapter->neq->attr.ist1, adapter);
d4150a27 3003 tasklet_kill(&adapter->neq_tasklet);
7a291083
JBT		 3004
3005 ehea_destroy_eq(adapter->neq);
1211bb6d 3006 ehea_remove_adapter_mr(adapter);
44c82152
TK		 3007 list_del(&adapter->list);
3008
7a291083 3009 kfree(adapter);
44c82152 3010
7a291083
JBT		 3011 return 0;
3012}
3013
3014static int check_module_parm(void)
3015{
3016 int ret = 0;
3017
3018 if ((rq1_entries < EHEA_MIN_ENTRIES_QP) ||
3019 (rq1_entries > EHEA_MAX_ENTRIES_RQ1)) {
3020 ehea_info("Bad parameter: rq1_entries");
3021 ret = -EINVAL;
3022 }
3023 if ((rq2_entries < EHEA_MIN_ENTRIES_QP) ||
3024 (rq2_entries > EHEA_MAX_ENTRIES_RQ2)) {
3025 ehea_info("Bad parameter: rq2_entries");
3026 ret = -EINVAL;
3027 }
3028 if ((rq3_entries < EHEA_MIN_ENTRIES_QP) ||
3029 (rq3_entries > EHEA_MAX_ENTRIES_RQ3)) {
3030 ehea_info("Bad parameter: rq3_entries");
3031 ret = -EINVAL;
3032 }
3033 if ((sq_entries < EHEA_MIN_ENTRIES_QP) ||
3034 (sq_entries > EHEA_MAX_ENTRIES_SQ)) {
3035 ehea_info("Bad parameter: sq_entries");
3036 ret = -EINVAL;
3037 }
3038
3039 return ret;
3040}
3041
4c3ca4da
JBT		 3042static ssize_t ehea_show_capabilities(struct device_driver *drv,
3043 char *buf)
3044{
3045 return sprintf(buf, "%d", EHEA_CAPABILITIES);
3046}
3047
3048static DRIVER_ATTR(capabilities, S_IRUSR | S_IRGRP | S_IROTH,
3049 ehea_show_capabilities, NULL);
3050
7a291083
JBT		 3051int __init ehea_module_init(void)
3052{
3053 int ret;
3054
3055 printk(KERN_INFO "IBM eHEA ethernet device driver (Release %s)\n",
3056 DRV_VERSION);
3057
44c82152
TK		 3058 ehea_driver_wq = create_workqueue("ehea_driver_wq");
3059
3060 INIT_WORK(&ehea_rereg_mr_task, ehea_rereg_mrs);
3061
7a291083
JBT		 3062 ret = check_module_parm();
3063 if (ret)
3064 goto out;
44c82152
TK		 3065
3066 ret = ehea_create_busmap();
3067 if (ret)
3068 goto out;
3069
7a291083 3070 ret = ibmebus_register_driver(&ehea_driver);
4c3ca4da 3071 if (ret) {
7a291083 3072 ehea_error("failed registering eHEA device driver on ebus");
4c3ca4da
JBT		 3073 goto out;
3074 }
3075
3076 ret = driver_create_file(&ehea_driver.driver,
3077 &driver_attr_capabilities);
3078 if (ret) {
3079 ehea_error("failed to register capabilities attribute, ret=%d",
3080 ret);
3081 ibmebus_unregister_driver(&ehea_driver);
3082 goto out;
3083 }
7a291083
JBT		 3084
3085out:
3086 return ret;
3087}
3088
3089static void __exit ehea_module_exit(void)
3090{
f46f6ba9 3091 destroy_workqueue(ehea_driver_wq);
4c3ca4da 3092 driver_remove_file(&ehea_driver.driver, &driver_attr_capabilities);
7a291083 3093 ibmebus_unregister_driver(&ehea_driver);
44c82152 3094 ehea_destroy_busmap();
7a291083
JBT		 3095}
3096
3097module_init(ehea_module_init);
3098module_exit(ehea_module_exit);
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