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[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;
8759cf76 56static int prop_carrier_state = 0;
7a291083
JBT		 57
58module_param(msg_level, int, 0);
59module_param(rq1_entries, int, 0);
60module_param(rq2_entries, int, 0);
61module_param(rq3_entries, int, 0);
62module_param(sq_entries, int, 0);
8759cf76 63module_param(prop_carrier_state, int, 0);
18604c54
JBT		 64module_param(use_mcs, int, 0);
65module_param(num_tx_qps, int, 0);
7a291083 66
18604c54 67MODULE_PARM_DESC(num_tx_qps, "Number of TX-QPS");
7a291083 68MODULE_PARM_DESC(msg_level, "msg_level");
8759cf76
JBT		 69MODULE_PARM_DESC(prop_carrier_state, "Propagate carrier state of physical "
70 "port to stack. 1:yes, 0:no. Default = 0 ");
7a291083
JBT		 71MODULE_PARM_DESC(rq3_entries, "Number of entries for Receive Queue 3 "
72 "[2^x - 1], x = [6..14]. Default = "
73 __MODULE_STRING(EHEA_DEF_ENTRIES_RQ3) ")");
74MODULE_PARM_DESC(rq2_entries, "Number of entries for Receive Queue 2 "
75 "[2^x - 1], x = [6..14]. Default = "
76 __MODULE_STRING(EHEA_DEF_ENTRIES_RQ2) ")");
77MODULE_PARM_DESC(rq1_entries, "Number of entries for Receive Queue 1 "
78 "[2^x - 1], x = [6..14]. Default = "
79 __MODULE_STRING(EHEA_DEF_ENTRIES_RQ1) ")");
80MODULE_PARM_DESC(sq_entries, " Number of entries for the Send Queue "
81 "[2^x - 1], x = [6..14]. Default = "
82 __MODULE_STRING(EHEA_DEF_ENTRIES_SQ) ")");
18072a5b 83MODULE_PARM_DESC(use_mcs, " 0:NAPI, 1:Multiple receive queues, Default = 0 ");
7a291083 84
d1dea38d 85static int port_name_cnt = 0;
44c82152
TK		 86static LIST_HEAD(adapter_list);
87u64 ehea_driver_flags = 0;
88struct workqueue_struct *ehea_driver_wq;
89struct work_struct ehea_rereg_mr_task;
90
d1dea38d
TK		 91
92static int __devinit ehea_probe_adapter(struct ibmebus_dev *dev,
d1d25aab 93 const struct of_device_id *id);
d1dea38d
TK		 94
95static int __devexit ehea_remove(struct ibmebus_dev *dev);
96
97static struct of_device_id ehea_device_table[] = {
98 {
99 .name = "lhea",
100 .compatible = "IBM,lhea",
101 },
102 {},
103};
104
105static struct ibmebus_driver ehea_driver = {
106 .name = "ehea",
107 .id_table = ehea_device_table,
108 .probe = ehea_probe_adapter,
109 .remove = ehea_remove,
110};
111
7a291083
JBT		 112void ehea_dump(void *adr, int len, char *msg) {
113 int x;
114 unsigned char *deb = adr;
115 for (x = 0; x < len; x += 16) {
d2db9eea 116 printk(DRV_NAME " %s adr=%p ofs=%04x %016lx %016lx\n", msg,
7a291083
JBT		 117 deb, x, *((u64*)&deb[0]), *((u64*)&deb[8]));
118 deb += 16;
119 }
120}
121
122static struct net_device_stats *ehea_get_stats(struct net_device *dev)
123{
124 struct ehea_port *port = netdev_priv(dev);
125 struct net_device_stats *stats = &port->stats;
126 struct hcp_ehea_port_cb2 *cb2;
127 u64 hret, rx_packets;
128 int i;
129
130 memset(stats, 0, sizeof(*stats));
131
a1d261c5 132 cb2 = kzalloc(PAGE_SIZE, GFP_KERNEL);
7a291083
JBT		 133 if (!cb2) {
134 ehea_error("no mem for cb2");
135 goto out;
136 }
137
138 hret = ehea_h_query_ehea_port(port->adapter->handle,
139 port->logical_port_id,
140 H_PORT_CB2, H_PORT_CB2_ALL, cb2);
141 if (hret != H_SUCCESS) {
142 ehea_error("query_ehea_port failed");
143 goto out_herr;
144 }
145
146 if (netif_msg_hw(port))
147 ehea_dump(cb2, sizeof(*cb2), "net_device_stats");
148
149 rx_packets = 0;
150 for (i = 0; i < port->num_def_qps; i++)
151 rx_packets += port->port_res[i].rx_packets;
152
153 stats->tx_packets = cb2->txucp + cb2->txmcp + cb2->txbcp;
154 stats->multicast = cb2->rxmcp;
155 stats->rx_errors = cb2->rxuerr;
156 stats->rx_bytes = cb2->rxo;
157 stats->tx_bytes = cb2->txo;
158 stats->rx_packets = rx_packets;
159
160out_herr:
161 kfree(cb2);
162out:
163 return stats;
164}
165
166static void ehea_refill_rq1(struct ehea_port_res *pr, int index, int nr_of_wqes)
167{
168 struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
169 struct net_device *dev = pr->port->netdev;
170 int max_index_mask = pr->rq1_skba.len - 1;
171 int i;
172
173 if (!nr_of_wqes)
174 return;
175
176 for (i = 0; i < nr_of_wqes; i++) {
177 if (!skb_arr_rq1[index]) {
178 skb_arr_rq1[index] = netdev_alloc_skb(dev,
179 EHEA_L_PKT_SIZE);
180 if (!skb_arr_rq1[index]) {
181 ehea_error("%s: no mem for skb/%d wqes filled",
182 dev->name, i);
183 break;
184 }
185 }
186 index--;
187 index &= max_index_mask;
188 }
189 /* Ring doorbell */
190 ehea_update_rq1a(pr->qp, i);
191}
192
193static int ehea_init_fill_rq1(struct ehea_port_res *pr, int nr_rq1a)
194{
195 int ret = 0;
196 struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
197 struct net_device *dev = pr->port->netdev;
198 int i;
199
200 for (i = 0; i < pr->rq1_skba.len; i++) {
201 skb_arr_rq1[i] = netdev_alloc_skb(dev, EHEA_L_PKT_SIZE);
202 if (!skb_arr_rq1[i]) {
203 ehea_error("%s: no mem for skb/%d wqes filled",
204 dev->name, i);
205 ret = -ENOMEM;
206 goto out;
207 }
208 }
209 /* Ring doorbell */
210 ehea_update_rq1a(pr->qp, nr_rq1a);
211out:
212 return ret;
213}
214
215static int ehea_refill_rq_def(struct ehea_port_res *pr,
216 struct ehea_q_skb_arr *q_skba, int rq_nr,
217 int num_wqes, int wqe_type, int packet_size)
218{
219 struct net_device *dev = pr->port->netdev;
220 struct ehea_qp *qp = pr->qp;
221 struct sk_buff **skb_arr = q_skba->arr;
222 struct ehea_rwqe *rwqe;
223 int i, index, max_index_mask, fill_wqes;
224 int ret = 0;
225
226 fill_wqes = q_skba->os_skbs + num_wqes;
227
228 if (!fill_wqes)
229 return ret;
230
231 index = q_skba->index;
232 max_index_mask = q_skba->len - 1;
233 for (i = 0; i < fill_wqes; i++) {
234 struct sk_buff *skb = netdev_alloc_skb(dev, packet_size);
235 if (!skb) {
236 ehea_error("%s: no mem for skb/%d wqes filled",
18604c54 237 pr->port->netdev->name, i);
7a291083
JBT		 238 q_skba->os_skbs = fill_wqes - i;
239 ret = -ENOMEM;
240 break;
241 }
242 skb_reserve(skb, NET_IP_ALIGN);
243
244 skb_arr[index] = skb;
245
246 rwqe = ehea_get_next_rwqe(qp, rq_nr);
247 rwqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, wqe_type)
d1d25aab 248 | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, index);
7a291083 249 rwqe->sg_list[0].l_key = pr->recv_mr.lkey;
44c82152 250 rwqe->sg_list[0].vaddr = ehea_map_vaddr(skb->data);
7a291083
JBT		 251 rwqe->sg_list[0].len = packet_size;
252 rwqe->data_segments = 1;
253
254 index++;
255 index &= max_index_mask;
44c82152
TK		 256
257 if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags)))
258 goto out;
7a291083 259 }
44c82152 260
7a291083
JBT		 261 q_skba->index = index;
262
263 /* Ring doorbell */
264 iosync();
265 if (rq_nr == 2)
266 ehea_update_rq2a(pr->qp, i);
267 else
268 ehea_update_rq3a(pr->qp, i);
44c82152 269out:
7a291083
JBT		 270 return ret;
271}
272
273
274static int ehea_refill_rq2(struct ehea_port_res *pr, int nr_of_wqes)
275{
276 return ehea_refill_rq_def(pr, &pr->rq2_skba, 2,
277 nr_of_wqes, EHEA_RWQE2_TYPE,
278 EHEA_RQ2_PKT_SIZE + NET_IP_ALIGN);
279}
280
281
282static int ehea_refill_rq3(struct ehea_port_res *pr, int nr_of_wqes)
283{
284 return ehea_refill_rq_def(pr, &pr->rq3_skba, 3,
285 nr_of_wqes, EHEA_RWQE3_TYPE,
286 EHEA_MAX_PACKET_SIZE + NET_IP_ALIGN);
287}
288
289static inline int ehea_check_cqe(struct ehea_cqe *cqe, int *rq_num)
290{
291 *rq_num = (cqe->type & EHEA_CQE_TYPE_RQ) >> 5;
292 if ((cqe->status & EHEA_CQE_STAT_ERR_MASK) == 0)
293 return 0;
294 if (((cqe->status & EHEA_CQE_STAT_ERR_TCP) != 0) &&
295 (cqe->header_length == 0))
296 return 0;
297 return -EINVAL;
298}
299
300static inline void ehea_fill_skb(struct net_device *dev,
301 struct sk_buff *skb, struct ehea_cqe *cqe)
302{
303 int length = cqe->num_bytes_transfered - 4; /*remove CRC */
304
305 skb_put(skb, length);
306 skb->ip_summed = CHECKSUM_UNNECESSARY;
307 skb->protocol = eth_type_trans(skb, dev);
308}
309
310static inline struct sk_buff *get_skb_by_index(struct sk_buff **skb_array,
311 int arr_len,
312 struct ehea_cqe *cqe)
313{
314 int skb_index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, cqe->wr_id);
315 struct sk_buff *skb;
316 void *pref;
317 int x;
318
319 x = skb_index + 1;
320 x &= (arr_len - 1);
321
322 pref = skb_array[x];
323 prefetchw(pref);
324 prefetchw(pref + EHEA_CACHE_LINE);
325
326 pref = (skb_array[x]->data);
327 prefetch(pref);
328 prefetch(pref + EHEA_CACHE_LINE);
329 prefetch(pref + EHEA_CACHE_LINE * 2);
330 prefetch(pref + EHEA_CACHE_LINE * 3);
331 skb = skb_array[skb_index];
332 skb_array[skb_index] = NULL;
333 return skb;
334}
335
336static inline struct sk_buff *get_skb_by_index_ll(struct sk_buff **skb_array,
337 int arr_len, int wqe_index)
338{
339 struct sk_buff *skb;
340 void *pref;
341 int x;
342
343 x = wqe_index + 1;
344 x &= (arr_len - 1);
345
346 pref = skb_array[x];
347 prefetchw(pref);
348 prefetchw(pref + EHEA_CACHE_LINE);
349
350 pref = (skb_array[x]->data);
351 prefetchw(pref);
352 prefetchw(pref + EHEA_CACHE_LINE);
353
354 skb = skb_array[wqe_index];
355 skb_array[wqe_index] = NULL;
356 return skb;
357}
358
359static int ehea_treat_poll_error(struct ehea_port_res *pr, int rq,
360 struct ehea_cqe *cqe, int *processed_rq2,
361 int *processed_rq3)
362{
363 struct sk_buff *skb;
364
acbddb59
JBT		 365 if (cqe->status & EHEA_CQE_STAT_ERR_TCP)
366 pr->p_stats.err_tcp_cksum++;
367 if (cqe->status & EHEA_CQE_STAT_ERR_IP)
368 pr->p_stats.err_ip_cksum++;
369 if (cqe->status & EHEA_CQE_STAT_ERR_CRC)
370 pr->p_stats.err_frame_crc++;
371
7a291083
JBT		 372 if (netif_msg_rx_err(pr->port)) {
373 ehea_error("CQE Error for QP %d", pr->qp->init_attr.qp_nr);
374 ehea_dump(cqe, sizeof(*cqe), "CQE");
375 }
376
377 if (rq == 2) {
378 *processed_rq2 += 1;
379 skb = get_skb_by_index(pr->rq2_skba.arr, pr->rq2_skba.len, cqe);
380 dev_kfree_skb(skb);
381 } else if (rq == 3) {
382 *processed_rq3 += 1;
383 skb = get_skb_by_index(pr->rq3_skba.arr, pr->rq3_skba.len, cqe);
384 dev_kfree_skb(skb);
385 }
386
387 if (cqe->status & EHEA_CQE_STAT_FAT_ERR_MASK) {
388 ehea_error("Critical receive error. Resetting port.");
389 queue_work(pr->port->adapter->ehea_wq, &pr->port->reset_task);
390 return 1;
391 }
392
393 return 0;
394}
395
18604c54
JBT		 396static struct ehea_cqe *ehea_proc_rwqes(struct net_device *dev,
397 struct ehea_port_res *pr,
398 int *budget)
7a291083 399{
18604c54 400 struct ehea_port *port = pr->port;
7a291083
JBT		 401 struct ehea_qp *qp = pr->qp;
402 struct ehea_cqe *cqe;
403 struct sk_buff *skb;
404 struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
405 struct sk_buff **skb_arr_rq2 = pr->rq2_skba.arr;
406 struct sk_buff **skb_arr_rq3 = pr->rq3_skba.arr;
407 int skb_arr_rq1_len = pr->rq1_skba.len;
408 int skb_arr_rq2_len = pr->rq2_skba.len;
409 int skb_arr_rq3_len = pr->rq3_skba.len;
410 int processed, processed_rq1, processed_rq2, processed_rq3;
18604c54 411 int wqe_index, last_wqe_index, rq, my_quota, port_reset;
7a291083
JBT		 412
413 processed = processed_rq1 = processed_rq2 = processed_rq3 = 0;
414 last_wqe_index = 0;
415 my_quota = min(*budget, dev->quota);
7a291083 416
7a291083
JBT		 417 cqe = ehea_poll_rq1(qp, &wqe_index);
418 while ((my_quota > 0) && cqe) {
419 ehea_inc_rq1(qp);
420 processed_rq1++;
421 processed++;
422 my_quota--;
423 if (netif_msg_rx_status(port))
424 ehea_dump(cqe, sizeof(*cqe), "CQE");
425
426 last_wqe_index = wqe_index;
427 rmb();
428 if (!ehea_check_cqe(cqe, &rq)) {
429 if (rq == 1) { /* LL RQ1 */
430 skb = get_skb_by_index_ll(skb_arr_rq1,
431 skb_arr_rq1_len,
432 wqe_index);
433 if (unlikely(!skb)) {
434 if (netif_msg_rx_err(port))
435 ehea_error("LL rq1: skb=NULL");
18604c54
JBT		 436
437 skb = netdev_alloc_skb(port->netdev,
7a291083
JBT		 438 EHEA_L_PKT_SIZE);
439 if (!skb)
440 break;
441 }
27d7ff46 442 skb_copy_to_linear_data(skb, ((char*)cqe) + 64,
d1d25aab 443 cqe->num_bytes_transfered - 4);
ade21372 444 ehea_fill_skb(port->netdev, skb, cqe);
7a291083
JBT		 445 } else if (rq == 2) { /* RQ2 */
446 skb = get_skb_by_index(skb_arr_rq2,
447 skb_arr_rq2_len, cqe);
448 if (unlikely(!skb)) {
449 if (netif_msg_rx_err(port))
450 ehea_error("rq2: skb=NULL");
451 break;
452 }
18604c54 453 ehea_fill_skb(port->netdev, skb, cqe);
7a291083
JBT		 454 processed_rq2++;
455 } else { /* RQ3 */
456 skb = get_skb_by_index(skb_arr_rq3,
457 skb_arr_rq3_len, cqe);
458 if (unlikely(!skb)) {
459 if (netif_msg_rx_err(port))
460 ehea_error("rq3: skb=NULL");
461 break;
462 }
18604c54 463 ehea_fill_skb(port->netdev, skb, cqe);
7a291083
JBT		 464 processed_rq3++;
465 }
466
dec590c1
TK		 467 if ((cqe->status & EHEA_CQE_VLAN_TAG_XTRACT)
468 && port->vgrp)
7a291083
JBT		 469 vlan_hwaccel_receive_skb(skb, port->vgrp,
470 cqe->vlan_tag);
471 else
472 netif_receive_skb(skb);
f9e29228 473
64251621 474 port->netdev->last_rx = jiffies;
18604c54 475 } else {
acbddb59 476 pr->p_stats.poll_receive_errors++;
7a291083
JBT		 477 port_reset = ehea_treat_poll_error(pr, rq, cqe,
478 &processed_rq2,
479 &processed_rq3);
480 if (port_reset)
481 break;
482 }
483 cqe = ehea_poll_rq1(qp, &wqe_index);
484 }
485
7a291083 486 pr->rx_packets += processed;
18604c54 487 *budget -= processed;
7a291083
JBT		 488
489 ehea_refill_rq1(pr, last_wqe_index, processed_rq1);
490 ehea_refill_rq2(pr, processed_rq2);
491 ehea_refill_rq3(pr, processed_rq3);
492
18604c54
JBT		 493 cqe = ehea_poll_rq1(qp, &wqe_index);
494 return cqe;
7a291083
JBT		 495}
496
18604c54 497static struct ehea_cqe *ehea_proc_cqes(struct ehea_port_res *pr, int my_quota)
7a291083 498{
acbddb59 499 struct sk_buff *skb;
7a291083
JBT		 500 struct ehea_cq *send_cq = pr->send_cq;
501 struct ehea_cqe *cqe;
18604c54 502 int quota = my_quota;
7a291083
JBT		 503 int cqe_counter = 0;
504 int swqe_av = 0;
acbddb59 505 int index;
7a291083
JBT		 506 unsigned long flags;
507
18604c54
JBT		 508 cqe = ehea_poll_cq(send_cq);
509 while(cqe && (quota > 0)) {
510 ehea_inc_cq(send_cq);
511
7a291083
JBT		 512 cqe_counter++;
513 rmb();
514 if (cqe->status & EHEA_CQE_STAT_ERR_MASK) {
515 ehea_error("Send Completion Error: Resetting port");
516 if (netif_msg_tx_err(pr->port))
517 ehea_dump(cqe, sizeof(*cqe), "Send CQE");
518 queue_work(pr->port->adapter->ehea_wq,
519 &pr->port->reset_task);
520 break;
521 }
522
523 if (netif_msg_tx_done(pr->port))
524 ehea_dump(cqe, sizeof(*cqe), "CQE");
525
526 if (likely(EHEA_BMASK_GET(EHEA_WR_ID_TYPE, cqe->wr_id)
acbddb59
JBT		 527 == EHEA_SWQE2_TYPE)) {
528
529 index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, cqe->wr_id);
530 skb = pr->sq_skba.arr[index];
531 dev_kfree_skb(skb);
532 pr->sq_skba.arr[index] = NULL;
533 }
7a291083
JBT		 534
535 swqe_av += EHEA_BMASK_GET(EHEA_WR_ID_REFILL, cqe->wr_id);
536 quota--;
18604c54
JBT		 537
538 cqe = ehea_poll_cq(send_cq);
539 };
7a291083
JBT		 540
541 ehea_update_feca(send_cq, cqe_counter);
542 atomic_add(swqe_av, &pr->swqe_avail);
543
544 spin_lock_irqsave(&pr->netif_queue, flags);
18604c54 545
7a291083
JBT		 546 if (pr->queue_stopped && (atomic_read(&pr->swqe_avail)
547 >= pr->swqe_refill_th)) {
548 netif_wake_queue(pr->port->netdev);
549 pr->queue_stopped = 0;
550 }
551 spin_unlock_irqrestore(&pr->netif_queue, flags);
552
18604c54 553 return cqe;
7a291083
JBT		 554}
555
18604c54
JBT		 556#define EHEA_NAPI_POLL_NUM_BEFORE_IRQ 16
557
558static int ehea_poll(struct net_device *dev, int *budget)
7a291083 559{
18604c54
JBT		 560 struct ehea_port_res *pr = dev->priv;
561 struct ehea_cqe *cqe;
562 struct ehea_cqe *cqe_skb = NULL;
563 int force_irq, wqe_index;
564
565 cqe = ehea_poll_rq1(pr->qp, &wqe_index);
566 cqe_skb = ehea_poll_cq(pr->send_cq);
567
568 force_irq = (pr->poll_counter > EHEA_NAPI_POLL_NUM_BEFORE_IRQ);
569
570 if ((!cqe && !cqe_skb) || force_irq) {
571 pr->poll_counter = 0;
572 netif_rx_complete(dev);
573 ehea_reset_cq_ep(pr->recv_cq);
574 ehea_reset_cq_ep(pr->send_cq);
575 ehea_reset_cq_n1(pr->recv_cq);
576 ehea_reset_cq_n1(pr->send_cq);
577 cqe = ehea_poll_rq1(pr->qp, &wqe_index);
578 cqe_skb = ehea_poll_cq(pr->send_cq);
579
e542aa6b 580 if (!cqe && !cqe_skb)
18604c54
JBT		 581 return 0;
582
e542aa6b 583 if (!netif_rx_reschedule(dev, dev->quota))
18604c54
JBT		 584 return 0;
585 }
e542aa6b 586
18604c54
JBT		 587 cqe = ehea_proc_rwqes(dev, pr, budget);
588 cqe_skb = ehea_proc_cqes(pr, 300);
589
590 if (cqe || cqe_skb)
591 pr->poll_counter++;
e542aa6b 592
18604c54 593 return 1;
7a291083
JBT		 594}
595
8d22c971
JBT		 596#ifdef CONFIG_NET_POLL_CONTROLLER
597static void ehea_netpoll(struct net_device *dev)
598{
599 struct ehea_port *port = netdev_priv(dev);
600
601 netif_rx_schedule(port->port_res[0].d_netdev);
602}
603#endif
604
605static int ehea_poll_firstqueue(struct net_device *dev, int *budget)
606{
607 struct ehea_port *port = netdev_priv(dev);
608 struct net_device *d_dev = port->port_res[0].d_netdev;
609
610 return ehea_poll(d_dev, budget);
611}
612
7d12e780 613static irqreturn_t ehea_recv_irq_handler(int irq, void *param)
7a291083
JBT		 614{
615 struct ehea_port_res *pr = param;
18604c54
JBT		 616
617 netif_rx_schedule(pr->d_netdev);
618
7a291083
JBT		 619 return IRQ_HANDLED;
620}
621
7d12e780 622static irqreturn_t ehea_qp_aff_irq_handler(int irq, void *param)
7a291083
JBT		 623{
624 struct ehea_port *port = param;
625 struct ehea_eqe *eqe;
d2db9eea 626 struct ehea_qp *qp;
7a291083
JBT		 627 u32 qp_token;
628
629 eqe = ehea_poll_eq(port->qp_eq);
bb3a6449 630
7a291083 631 while (eqe) {
7a291083 632 qp_token = EHEA_BMASK_GET(EHEA_EQE_QP_TOKEN, eqe->entry);
bb3a6449
TK		 633 ehea_error("QP aff_err: entry=0x%lx, token=0x%x",
634 eqe->entry, qp_token);
d2db9eea
JBT		 635
636 qp = port->port_res[qp_token].qp;
637 ehea_error_data(port->adapter, qp->fw_handle);
bb3a6449 638 eqe = ehea_poll_eq(port->qp_eq);
7a291083
JBT		 639 }
640
d2db9eea
JBT		 641 queue_work(port->adapter->ehea_wq, &port->reset_task);
642
7a291083
JBT		 643 return IRQ_HANDLED;
644}
645
646static struct ehea_port *ehea_get_port(struct ehea_adapter *adapter,
647 int logical_port)
648{
649 int i;
650
1acf2318 651 for (i = 0; i < EHEA_MAX_PORTS; i++)
41b69c70 652 if (adapter->port[i])
d1d25aab 653 if (adapter->port[i]->logical_port_id == logical_port)
41b69c70 654 return adapter->port[i];
7a291083
JBT		 655 return NULL;
656}
657
658int ehea_sense_port_attr(struct ehea_port *port)
659{
660 int ret;
661 u64 hret;
662 struct hcp_ehea_port_cb0 *cb0;
663
a1d261c5
TK		 664 cb0 = kzalloc(PAGE_SIZE, GFP_ATOMIC); /* May be called via */
665 if (!cb0) { /* ehea_neq_tasklet() */
7a291083
JBT		 666 ehea_error("no mem for cb0");
667 ret = -ENOMEM;
668 goto out;
669 }
670
671 hret = ehea_h_query_ehea_port(port->adapter->handle,
672 port->logical_port_id, H_PORT_CB0,
673 EHEA_BMASK_SET(H_PORT_CB0_ALL, 0xFFFF),
674 cb0);
675 if (hret != H_SUCCESS) {
676 ret = -EIO;
677 goto out_free;
678 }
679
680 /* MAC address */
681 port->mac_addr = cb0->port_mac_addr << 16;
682
683 if (!is_valid_ether_addr((u8*)&port->mac_addr)) {
684 ret = -EADDRNOTAVAIL;
685 goto out_free;
686 }
687
688 /* Port speed */
689 switch (cb0->port_speed) {
690 case H_SPEED_10M_H:
691 port->port_speed = EHEA_SPEED_10M;
692 port->full_duplex = 0;
693 break;
694 case H_SPEED_10M_F:
695 port->port_speed = EHEA_SPEED_10M;
696 port->full_duplex = 1;
697 break;
698 case H_SPEED_100M_H:
699 port->port_speed = EHEA_SPEED_100M;
700 port->full_duplex = 0;
701 break;
702 case H_SPEED_100M_F:
703 port->port_speed = EHEA_SPEED_100M;
704 port->full_duplex = 1;
705 break;
706 case H_SPEED_1G_F:
707 port->port_speed = EHEA_SPEED_1G;
708 port->full_duplex = 1;
709 break;
710 case H_SPEED_10G_F:
711 port->port_speed = EHEA_SPEED_10G;
712 port->full_duplex = 1;
713 break;
714 default:
715 port->port_speed = 0;
716 port->full_duplex = 0;
717 break;
718 }
719
e919b593 720 port->autoneg = 1;
18604c54 721 port->num_mcs = cb0->num_default_qps;
e919b593 722
7a291083 723 /* Number of default QPs */
18604c54
JBT		 724 if (use_mcs)
725 port->num_def_qps = cb0->num_default_qps;
726 else
727 port->num_def_qps = 1;
7a291083
JBT		 728
729 if (!port->num_def_qps) {
730 ret = -EINVAL;
731 goto out_free;
732 }
733
18604c54
JBT		 734 port->num_tx_qps = num_tx_qps;
735
736 if (port->num_def_qps >= port->num_tx_qps)
7a291083
JBT		 737 port->num_add_tx_qps = 0;
738 else
18604c54 739 port->num_add_tx_qps = port->num_tx_qps - port->num_def_qps;
7a291083
JBT		 740
741 ret = 0;
742out_free:
743 if (ret || netif_msg_probe(port))
744 ehea_dump(cb0, sizeof(*cb0), "ehea_sense_port_attr");
745 kfree(cb0);
746out:
747 return ret;
748}
749
750int ehea_set_portspeed(struct ehea_port *port, u32 port_speed)
751{
752 struct hcp_ehea_port_cb4 *cb4;
753 u64 hret;
754 int ret = 0;
755
a1d261c5 756 cb4 = kzalloc(PAGE_SIZE, GFP_KERNEL);
7a291083
JBT		 757 if (!cb4) {
758 ehea_error("no mem for cb4");
759 ret = -ENOMEM;
760 goto out;
761 }
762
763 cb4->port_speed = port_speed;
764
765 netif_carrier_off(port->netdev);
766
767 hret = ehea_h_modify_ehea_port(port->adapter->handle,
768 port->logical_port_id,
769 H_PORT_CB4, H_PORT_CB4_SPEED, cb4);
770 if (hret == H_SUCCESS) {
771 port->autoneg = port_speed == EHEA_SPEED_AUTONEG ? 1 : 0;
772
773 hret = ehea_h_query_ehea_port(port->adapter->handle,
774 port->logical_port_id,
775 H_PORT_CB4, H_PORT_CB4_SPEED,
776 cb4);
777 if (hret == H_SUCCESS) {
778 switch (cb4->port_speed) {
779 case H_SPEED_10M_H:
780 port->port_speed = EHEA_SPEED_10M;
781 port->full_duplex = 0;
782 break;
783 case H_SPEED_10M_F:
784 port->port_speed = EHEA_SPEED_10M;
785 port->full_duplex = 1;
786 break;
787 case H_SPEED_100M_H:
788 port->port_speed = EHEA_SPEED_100M;
789 port->full_duplex = 0;
790 break;
791 case H_SPEED_100M_F:
792 port->port_speed = EHEA_SPEED_100M;
793 port->full_duplex = 1;
794 break;
795 case H_SPEED_1G_F:
796 port->port_speed = EHEA_SPEED_1G;
797 port->full_duplex = 1;
798 break;
799 case H_SPEED_10G_F:
800 port->port_speed = EHEA_SPEED_10G;
801 port->full_duplex = 1;
802 break;
803 default:
804 port->port_speed = 0;
805 port->full_duplex = 0;
806 break;
807 }
808 } else {
809 ehea_error("Failed sensing port speed");
810 ret = -EIO;
811 }
812 } else {
813 if (hret == H_AUTHORITY) {
7674a588 814 ehea_info("Hypervisor denied setting port speed");
7a291083
JBT		 815 ret = -EPERM;
816 } else {
817 ret = -EIO;
818 ehea_error("Failed setting port speed");
819 }
820 }
8759cf76
JBT		 821 if (!prop_carrier_state || (port->phy_link == EHEA_PHY_LINK_UP))
822 netif_carrier_on(port->netdev);
823
7a291083
JBT		 824 kfree(cb4);
825out:
826 return ret;
827}
828
829static void ehea_parse_eqe(struct ehea_adapter *adapter, u64 eqe)
830{
831 int ret;
832 u8 ec;
833 u8 portnum;
834 struct ehea_port *port;
835
836 ec = EHEA_BMASK_GET(NEQE_EVENT_CODE, eqe);
837 portnum = EHEA_BMASK_GET(NEQE_PORTNUM, eqe);
838 port = ehea_get_port(adapter, portnum);
839
840 switch (ec) {
841 case EHEA_EC_PORTSTATE_CHG: /* port state change */
842
843 if (!port) {
844 ehea_error("unknown portnum %x", portnum);
845 break;
846 }
847
848 if (EHEA_BMASK_GET(NEQE_PORT_UP, eqe)) {
849 if (!netif_carrier_ok(port->netdev)) {
1e1675cc 850 ret = ehea_sense_port_attr(port);
7a291083
JBT		 851 if (ret) {
852 ehea_error("failed resensing port "
853 "attributes");
854 break;
855 }
856
857 if (netif_msg_link(port))
858 ehea_info("%s: Logical port up: %dMbps "
859 "%s Duplex",
860 port->netdev->name,
861 port->port_speed,
862 port->full_duplex ==
863 1 ? "Full" : "Half");
864
865 netif_carrier_on(port->netdev);
866 netif_wake_queue(port->netdev);
867 }
868 } else
869 if (netif_carrier_ok(port->netdev)) {
870 if (netif_msg_link(port))
871 ehea_info("%s: Logical port down",
872 port->netdev->name);
873 netif_carrier_off(port->netdev);
874 netif_stop_queue(port->netdev);
875 }
876
877 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PORT_UP, eqe)) {
8759cf76 878 port->phy_link = EHEA_PHY_LINK_UP;
7a291083
JBT		 879 if (netif_msg_link(port))
880 ehea_info("%s: Physical port up",
881 port->netdev->name);
8759cf76
JBT		 882 if (prop_carrier_state)
883 netif_carrier_on(port->netdev);
7a291083 884 } else {
8759cf76 885 port->phy_link = EHEA_PHY_LINK_DOWN;
7a291083
JBT		 886 if (netif_msg_link(port))
887 ehea_info("%s: Physical port down",
888 port->netdev->name);
8759cf76
JBT		 889 if (prop_carrier_state)
890 netif_carrier_off(port->netdev);
7a291083
JBT		 891 }
892
893 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PRIMARY, eqe))
894 ehea_info("External switch port is primary port");
895 else
896 ehea_info("External switch port is backup port");
897
898 break;
899 case EHEA_EC_ADAPTER_MALFUNC:
900 ehea_error("Adapter malfunction");
901 break;
902 case EHEA_EC_PORT_MALFUNC:
903 ehea_info("Port malfunction: Device: %s", port->netdev->name);
904 netif_carrier_off(port->netdev);
905 netif_stop_queue(port->netdev);
906 break;
907 default:
bff0a55f 908 ehea_error("unknown event code %x, eqe=0x%lX", ec, eqe);
7a291083
JBT		 909 break;
910 }
911}
912
913static void ehea_neq_tasklet(unsigned long data)
914{
915 struct ehea_adapter *adapter = (struct ehea_adapter*)data;
916 struct ehea_eqe *eqe;
917 u64 event_mask;
918
919 eqe = ehea_poll_eq(adapter->neq);
920 ehea_debug("eqe=%p", eqe);
921
922 while (eqe) {
923 ehea_debug("*eqe=%lx", eqe->entry);
924 ehea_parse_eqe(adapter, eqe->entry);
925 eqe = ehea_poll_eq(adapter->neq);
926 ehea_debug("next eqe=%p", eqe);
927 }
928
929 event_mask = EHEA_BMASK_SET(NELR_PORTSTATE_CHG, 1)
930 | EHEA_BMASK_SET(NELR_ADAPTER_MALFUNC, 1)
931 | EHEA_BMASK_SET(NELR_PORT_MALFUNC, 1);
932
933 ehea_h_reset_events(adapter->handle,
934 adapter->neq->fw_handle, event_mask);
935}
936
7d12e780 937static irqreturn_t ehea_interrupt_neq(int irq, void *param)
7a291083
JBT		 938{
939 struct ehea_adapter *adapter = param;
940 tasklet_hi_schedule(&adapter->neq_tasklet);
941 return IRQ_HANDLED;
942}
943
944
945static int ehea_fill_port_res(struct ehea_port_res *pr)
946{
947 int ret;
948 struct ehea_qp_init_attr *init_attr = &pr->qp->init_attr;
949
950 ret = ehea_init_fill_rq1(pr, init_attr->act_nr_rwqes_rq1
951 - init_attr->act_nr_rwqes_rq2
952 - init_attr->act_nr_rwqes_rq3 - 1);
953
954 ret |= ehea_refill_rq2(pr, init_attr->act_nr_rwqes_rq2 - 1);
955
956 ret |= ehea_refill_rq3(pr, init_attr->act_nr_rwqes_rq3 - 1);
957
958 return ret;
959}
960
961static int ehea_reg_interrupts(struct net_device *dev)
962{
963 struct ehea_port *port = netdev_priv(dev);
964 struct ehea_port_res *pr;
965 int i, ret;
966
7a291083
JBT		 967
968 snprintf(port->int_aff_name, EHEA_IRQ_NAME_SIZE - 1, "%s-aff",
969 dev->name);
970
971 ret = ibmebus_request_irq(NULL, port->qp_eq->attr.ist1,
972 ehea_qp_aff_irq_handler,
38515e90 973 IRQF_DISABLED, port->int_aff_name, port);
7a291083
JBT		 974 if (ret) {
975 ehea_error("failed registering irq for qp_aff_irq_handler:"
976 "ist=%X", port->qp_eq->attr.ist1);
977 goto out_free_qpeq;
978 }
979
980 if (netif_msg_ifup(port))
981 ehea_info("irq_handle 0x%X for function qp_aff_irq_handler "
982 "registered", port->qp_eq->attr.ist1);
983
18604c54 984
7a291083
JBT		 985 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
986 pr = &port->port_res[i];
987 snprintf(pr->int_send_name, EHEA_IRQ_NAME_SIZE - 1,
18604c54
JBT		 988 "%s-queue%d", dev->name, i);
989 ret = ibmebus_request_irq(NULL, pr->eq->attr.ist1,
990 ehea_recv_irq_handler,
38515e90 991 IRQF_DISABLED, pr->int_send_name,
7a291083
JBT		 992 pr);
993 if (ret) {
18604c54 994 ehea_error("failed registering irq for ehea_queue "
7a291083 995 "port_res_nr:%d, ist=%X", i,
18604c54 996 pr->eq->attr.ist1);
7a291083
JBT		 997 goto out_free_req;
998 }
999 if (netif_msg_ifup(port))
18604c54
JBT		 1000 ehea_info("irq_handle 0x%X for function ehea_queue_int "
1001 "%d registered", pr->eq->attr.ist1, i);
7a291083
JBT		 1002 }
1003out:
1004 return ret;
1005
18604c54 1006
7a291083
JBT		 1007out_free_req:
1008 while (--i >= 0) {
18604c54 1009 u32 ist = port->port_res[i].eq->attr.ist1;
7a291083
JBT		 1010 ibmebus_free_irq(NULL, ist, &port->port_res[i]);
1011 }
18604c54 1012
7a291083
JBT		 1013out_free_qpeq:
1014 ibmebus_free_irq(NULL, port->qp_eq->attr.ist1, port);
1015 i = port->num_def_qps;
18604c54 1016
7a291083 1017 goto out;
18604c54 1018
7a291083
JBT		 1019}
1020
1021static void ehea_free_interrupts(struct net_device *dev)
1022{
1023 struct ehea_port *port = netdev_priv(dev);
1024 struct ehea_port_res *pr;
1025 int i;
1026
1027 /* send */
18604c54 1028
7a291083
JBT		 1029 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
1030 pr = &port->port_res[i];
18604c54 1031 ibmebus_free_irq(NULL, pr->eq->attr.ist1, pr);
7a291083
JBT		 1032 if (netif_msg_intr(port))
1033 ehea_info("free send irq for res %d with handle 0x%X",
18604c54 1034 i, pr->eq->attr.ist1);
7a291083
JBT		 1035 }
1036
1037 /* associated events */
1038 ibmebus_free_irq(NULL, port->qp_eq->attr.ist1, port);
1039 if (netif_msg_intr(port))
1040 ehea_info("associated event interrupt for handle 0x%X freed",
1041 port->qp_eq->attr.ist1);
1042}
1043
1044static int ehea_configure_port(struct ehea_port *port)
1045{
1046 int ret, i;
1047 u64 hret, mask;
1048 struct hcp_ehea_port_cb0 *cb0;
1049
1050 ret = -ENOMEM;
a1d261c5 1051 cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL);
7a291083
JBT		 1052 if (!cb0)
1053 goto out;
1054
1055 cb0->port_rc = EHEA_BMASK_SET(PXLY_RC_VALID, 1)
1056 | EHEA_BMASK_SET(PXLY_RC_IP_CHKSUM, 1)
1057 | EHEA_BMASK_SET(PXLY_RC_TCP_UDP_CHKSUM, 1)
1058 | EHEA_BMASK_SET(PXLY_RC_VLAN_XTRACT, 1)
1059 | EHEA_BMASK_SET(PXLY_RC_VLAN_TAG_FILTER,
1060 PXLY_RC_VLAN_FILTER)
1061 | EHEA_BMASK_SET(PXLY_RC_JUMBO_FRAME, 1);
1062
18604c54
JBT		 1063 for (i = 0; i < port->num_mcs; i++)
1064 if (use_mcs)
1065 cb0->default_qpn_arr[i] =
1066 port->port_res[i].qp->init_attr.qp_nr;
1067 else
1068 cb0->default_qpn_arr[i] =
1069 port->port_res[0].qp->init_attr.qp_nr;
e542aa6b 1070
7a291083
JBT		 1071 if (netif_msg_ifup(port))
1072 ehea_dump(cb0, sizeof(*cb0), "ehea_configure_port");
1073
1074 mask = EHEA_BMASK_SET(H_PORT_CB0_PRC, 1)
1075 | EHEA_BMASK_SET(H_PORT_CB0_DEFQPNARRAY, 1);
1076
1077 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1078 port->logical_port_id,
1079 H_PORT_CB0, mask, cb0);
1080 ret = -EIO;
1081 if (hret != H_SUCCESS)
1082 goto out_free;
1083
1084 ret = 0;
1085
1086out_free:
1087 kfree(cb0);
1088out:
1089 return ret;
1090}
1091
e542aa6b 1092int ehea_gen_smrs(struct ehea_port_res *pr)
7a291083 1093{
e542aa6b 1094 int ret;
7a291083
JBT		 1095 struct ehea_adapter *adapter = pr->port->adapter;
1096
e542aa6b
JBT		 1097 ret = ehea_gen_smr(adapter, &adapter->mr, &pr->send_mr);
1098 if (ret)
7a291083
JBT		 1099 goto out;
1100
e542aa6b
JBT		 1101 ret = ehea_gen_smr(adapter, &adapter->mr, &pr->recv_mr);
1102 if (ret)
1103 goto out_free;
7a291083
JBT		 1104
1105 return 0;
1106
e542aa6b
JBT		 1107out_free:
1108 ehea_rem_mr(&pr->send_mr);
7a291083 1109out:
e542aa6b 1110 ehea_error("Generating SMRS failed\n");
7a291083
JBT		 1111 return -EIO;
1112}
1113
e542aa6b 1114int ehea_rem_smrs(struct ehea_port_res *pr)
7a291083 1115{
e542aa6b
JBT		 1116 if ((ehea_rem_mr(&pr->send_mr))
1117 || (ehea_rem_mr(&pr->recv_mr)))
1118 return -EIO;
1119 else
1120 return 0;
7a291083
JBT		 1121}
1122
1123static int ehea_init_q_skba(struct ehea_q_skb_arr *q_skba, int max_q_entries)
1124{
1125 int arr_size = sizeof(void*) * max_q_entries;
1126
1127 q_skba->arr = vmalloc(arr_size);
1128 if (!q_skba->arr)
1129 return -ENOMEM;
1130
1131 memset(q_skba->arr, 0, arr_size);
1132
1133 q_skba->len = max_q_entries;
1134 q_skba->index = 0;
1135 q_skba->os_skbs = 0;
1136
1137 return 0;
1138}
1139
1140static int ehea_init_port_res(struct ehea_port *port, struct ehea_port_res *pr,
1141 struct port_res_cfg *pr_cfg, int queue_token)
1142{
1143 struct ehea_adapter *adapter = port->adapter;
1144 enum ehea_eq_type eq_type = EHEA_EQ;
1145 struct ehea_qp_init_attr *init_attr = NULL;
1146 int ret = -EIO;
1147
1148 memset(pr, 0, sizeof(struct ehea_port_res));
1149
1150 pr->port = port;
7a291083
JBT		 1151 spin_lock_init(&pr->xmit_lock);
1152 spin_lock_init(&pr->netif_queue);
1153
18604c54
JBT		 1154 pr->eq = ehea_create_eq(adapter, eq_type, EHEA_MAX_ENTRIES_EQ, 0);
1155 if (!pr->eq) {
1156 ehea_error("create_eq failed (eq)");
7a291083
JBT		 1157 goto out_free;
1158 }
1159
1160 pr->recv_cq = ehea_create_cq(adapter, pr_cfg->max_entries_rcq,
18604c54 1161 pr->eq->fw_handle,
7a291083
JBT		 1162 port->logical_port_id);
1163 if (!pr->recv_cq) {
1164 ehea_error("create_cq failed (cq_recv)");
1165 goto out_free;
1166 }
1167
1168 pr->send_cq = ehea_create_cq(adapter, pr_cfg->max_entries_scq,
18604c54 1169 pr->eq->fw_handle,
7a291083
JBT		 1170 port->logical_port_id);
1171 if (!pr->send_cq) {
1172 ehea_error("create_cq failed (cq_send)");
1173 goto out_free;
1174 }
1175
1176 if (netif_msg_ifup(port))
1177 ehea_info("Send CQ: act_nr_cqes=%d, Recv CQ: act_nr_cqes=%d",
1178 pr->send_cq->attr.act_nr_of_cqes,
1179 pr->recv_cq->attr.act_nr_of_cqes);
1180
1181 init_attr = kzalloc(sizeof(*init_attr), GFP_KERNEL);
1182 if (!init_attr) {
1183 ret = -ENOMEM;
1184 ehea_error("no mem for ehea_qp_init_attr");
1185 goto out_free;
1186 }
1187
1188 init_attr->low_lat_rq1 = 1;
1189 init_attr->signalingtype = 1; /* generate CQE if specified in WQE */
1190 init_attr->rq_count = 3;
1191 init_attr->qp_token = queue_token;
1192 init_attr->max_nr_send_wqes = pr_cfg->max_entries_sq;
1193 init_attr->max_nr_rwqes_rq1 = pr_cfg->max_entries_rq1;
1194 init_attr->max_nr_rwqes_rq2 = pr_cfg->max_entries_rq2;
1195 init_attr->max_nr_rwqes_rq3 = pr_cfg->max_entries_rq3;
1196 init_attr->wqe_size_enc_sq = EHEA_SG_SQ;
1197 init_attr->wqe_size_enc_rq1 = EHEA_SG_RQ1;
1198 init_attr->wqe_size_enc_rq2 = EHEA_SG_RQ2;
1199 init_attr->wqe_size_enc_rq3 = EHEA_SG_RQ3;
1200 init_attr->rq2_threshold = EHEA_RQ2_THRESHOLD;
1201 init_attr->rq3_threshold = EHEA_RQ3_THRESHOLD;
1202 init_attr->port_nr = port->logical_port_id;
1203 init_attr->send_cq_handle = pr->send_cq->fw_handle;
1204 init_attr->recv_cq_handle = pr->recv_cq->fw_handle;
1205 init_attr->aff_eq_handle = port->qp_eq->fw_handle;
1206
1207 pr->qp = ehea_create_qp(adapter, adapter->pd, init_attr);
1208 if (!pr->qp) {
1209 ehea_error("create_qp failed");
1210 ret = -EIO;
1211 goto out_free;
1212 }
1213
1214 if (netif_msg_ifup(port))
1215 ehea_info("QP: qp_nr=%d\n act_nr_snd_wqe=%d\n nr_rwqe_rq1=%d\n "
1216 "nr_rwqe_rq2=%d\n nr_rwqe_rq3=%d", init_attr->qp_nr,
1217 init_attr->act_nr_send_wqes,
1218 init_attr->act_nr_rwqes_rq1,
1219 init_attr->act_nr_rwqes_rq2,
1220 init_attr->act_nr_rwqes_rq3);
1221
1222 ret = ehea_init_q_skba(&pr->sq_skba, init_attr->act_nr_send_wqes + 1);
1223 ret |= ehea_init_q_skba(&pr->rq1_skba, init_attr->act_nr_rwqes_rq1 + 1);
1224 ret |= ehea_init_q_skba(&pr->rq2_skba, init_attr->act_nr_rwqes_rq2 + 1);
1225 ret |= ehea_init_q_skba(&pr->rq3_skba, init_attr->act_nr_rwqes_rq3 + 1);
1226 if (ret)
1227 goto out_free;
1228
1229 pr->swqe_refill_th = init_attr->act_nr_send_wqes / 10;
1230 if (ehea_gen_smrs(pr) != 0) {
1231 ret = -EIO;
1232 goto out_free;
1233 }
18604c54 1234
7a291083
JBT		 1235 atomic_set(&pr->swqe_avail, init_attr->act_nr_send_wqes - 1);
1236
1237 kfree(init_attr);
18604c54
JBT		 1238
1239 pr->d_netdev = alloc_netdev(0, "", ether_setup);
1240 if (!pr->d_netdev)
1241 goto out_free;
1242 pr->d_netdev->priv = pr;
1243 pr->d_netdev->weight = 64;
1244 pr->d_netdev->poll = ehea_poll;
1245 set_bit(__LINK_STATE_START, &pr->d_netdev->state);
1246 strcpy(pr->d_netdev->name, port->netdev->name);
1247
7a291083
JBT		 1248 ret = 0;
1249 goto out;
1250
1251out_free:
1252 kfree(init_attr);
1253 vfree(pr->sq_skba.arr);
1254 vfree(pr->rq1_skba.arr);
1255 vfree(pr->rq2_skba.arr);
1256 vfree(pr->rq3_skba.arr);
1257 ehea_destroy_qp(pr->qp);
1258 ehea_destroy_cq(pr->send_cq);
1259 ehea_destroy_cq(pr->recv_cq);
18604c54 1260 ehea_destroy_eq(pr->eq);
7a291083
JBT		 1261out:
1262 return ret;
1263}
1264
1265static int ehea_clean_portres(struct ehea_port *port, struct ehea_port_res *pr)
1266{
1267 int ret, i;
1268
18604c54
JBT		 1269 free_netdev(pr->d_netdev);
1270
7a291083
JBT		 1271 ret = ehea_destroy_qp(pr->qp);
1272
1273 if (!ret) {
1274 ehea_destroy_cq(pr->send_cq);
1275 ehea_destroy_cq(pr->recv_cq);
18604c54 1276 ehea_destroy_eq(pr->eq);
7a291083
JBT		 1277
1278 for (i = 0; i < pr->rq1_skba.len; i++)
1279 if (pr->rq1_skba.arr[i])
1280 dev_kfree_skb(pr->rq1_skba.arr[i]);
1281
1282 for (i = 0; i < pr->rq2_skba.len; i++)
1283 if (pr->rq2_skba.arr[i])
1284 dev_kfree_skb(pr->rq2_skba.arr[i]);
1285
1286 for (i = 0; i < pr->rq3_skba.len; i++)
1287 if (pr->rq3_skba.arr[i])
1288 dev_kfree_skb(pr->rq3_skba.arr[i]);
1289
1290 for (i = 0; i < pr->sq_skba.len; i++)
1291 if (pr->sq_skba.arr[i])
1292 dev_kfree_skb(pr->sq_skba.arr[i]);
1293
1294 vfree(pr->rq1_skba.arr);
1295 vfree(pr->rq2_skba.arr);
1296 vfree(pr->rq3_skba.arr);
1297 vfree(pr->sq_skba.arr);
1298 ret = ehea_rem_smrs(pr);
1299 }
1300 return ret;
1301}
1302
1303/*
1304 * The write_* functions store information in swqe which is used by
1305 * the hardware to calculate the ip/tcp/udp checksum
1306 */
1307
1308static inline void write_ip_start_end(struct ehea_swqe *swqe,
1309 const struct sk_buff *skb)
1310{
eddc9ec5 1311 swqe->ip_start = skb_network_offset(skb);
c9bdd4b5 1312 swqe->ip_end = (u8)(swqe->ip_start + ip_hdrlen(skb) - 1);
7a291083
JBT		 1313}
1314
1315static inline void write_tcp_offset_end(struct ehea_swqe *swqe,
1316 const struct sk_buff *skb)
1317{
1318 swqe->tcp_offset =
1319 (u8)(swqe->ip_end + 1 + offsetof(struct tcphdr, check));
1320
1321 swqe->tcp_end = (u16)skb->len - 1;
1322}
1323
1324static inline void write_udp_offset_end(struct ehea_swqe *swqe,
1325 const struct sk_buff *skb)
1326{
1327 swqe->tcp_offset =
1328 (u8)(swqe->ip_end + 1 + offsetof(struct udphdr, check));
1329
1330 swqe->tcp_end = (u16)skb->len - 1;
1331}
1332
1333
1334static void write_swqe2_TSO(struct sk_buff *skb,
1335 struct ehea_swqe *swqe, u32 lkey)
1336{
1337 struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry;
1338 u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0];
1339 int skb_data_size = skb->len - skb->data_len;
1340 int headersize;
7a291083
JBT		 1341
1342 /* Packet is TCP with TSO enabled */
1343 swqe->tx_control |= EHEA_SWQE_TSO;
1344 swqe->mss = skb_shinfo(skb)->gso_size;
1345 /* copy only eth/ip/tcp headers to immediate data and
1346 * the rest of skb->data to sg1entry
1347 */
ab6a5bb6 1348 headersize = ETH_HLEN + ip_hdrlen(skb) + tcp_hdrlen(skb);
7a291083
JBT		 1349
1350 skb_data_size = skb->len - skb->data_len;
1351
1352 if (skb_data_size >= headersize) {
1353 /* copy immediate data */
d626f62b 1354 skb_copy_from_linear_data(skb, imm_data, headersize);
7a291083
JBT		 1355 swqe->immediate_data_length = headersize;
1356
1357 if (skb_data_size > headersize) {
1358 /* set sg1entry data */
1359 sg1entry->l_key = lkey;
1360 sg1entry->len = skb_data_size - headersize;
44a5b3d5
TK		 1361 sg1entry->vaddr =
1362 ehea_map_vaddr(skb->data + headersize);
7a291083
JBT		 1363 swqe->descriptors++;
1364 }
1365 } else
1366 ehea_error("cannot handle fragmented headers");
1367}
1368
1369static void write_swqe2_nonTSO(struct sk_buff *skb,
1370 struct ehea_swqe *swqe, u32 lkey)
1371{
1372 int skb_data_size = skb->len - skb->data_len;
1373 u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0];
1374 struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry;
7a291083
JBT		 1375
1376 /* Packet is any nonTSO type
1377 *
1378 * Copy as much as possible skb->data to immediate data and
1379 * the rest to sg1entry
1380 */
1381 if (skb_data_size >= SWQE2_MAX_IMM) {
1382 /* copy immediate data */
d626f62b 1383 skb_copy_from_linear_data(skb, imm_data, SWQE2_MAX_IMM);
7a291083
JBT		 1384
1385 swqe->immediate_data_length = SWQE2_MAX_IMM;
1386
1387 if (skb_data_size > SWQE2_MAX_IMM) {
1388 /* copy sg1entry data */
1389 sg1entry->l_key = lkey;
1390 sg1entry->len = skb_data_size - SWQE2_MAX_IMM;
44a5b3d5
TK		 1391 sg1entry->vaddr =
1392 ehea_map_vaddr(skb->data + SWQE2_MAX_IMM);
7a291083
JBT		 1393 swqe->descriptors++;
1394 }
1395 } else {
d626f62b 1396 skb_copy_from_linear_data(skb, imm_data, skb_data_size);
7a291083
JBT		 1397 swqe->immediate_data_length = skb_data_size;
1398 }
1399}
1400
1401static inline void write_swqe2_data(struct sk_buff *skb, struct net_device *dev,
1402 struct ehea_swqe *swqe, u32 lkey)
1403{
1404 struct ehea_vsgentry *sg_list, *sg1entry, *sgentry;
1405 skb_frag_t *frag;
1406 int nfrags, sg1entry_contains_frag_data, i;
7a291083
JBT		 1407
1408 nfrags = skb_shinfo(skb)->nr_frags;
1409 sg1entry = &swqe->u.immdata_desc.sg_entry;
1410 sg_list = (struct ehea_vsgentry*)&swqe->u.immdata_desc.sg_list;
1411 swqe->descriptors = 0;
1412 sg1entry_contains_frag_data = 0;
1413
1414 if ((dev->features & NETIF_F_TSO) && skb_shinfo(skb)->gso_size)
1415 write_swqe2_TSO(skb, swqe, lkey);
1416 else
1417 write_swqe2_nonTSO(skb, swqe, lkey);
1418
1419 /* write descriptors */
1420 if (nfrags > 0) {
1421 if (swqe->descriptors == 0) {
1422 /* sg1entry not yet used */
1423 frag = &skb_shinfo(skb)->frags[0];
1424
1425 /* copy sg1entry data */
1426 sg1entry->l_key = lkey;
1427 sg1entry->len = frag->size;
44a5b3d5
TK		 1428 sg1entry->vaddr =
1429 ehea_map_vaddr(page_address(frag->page)
1430 + frag->page_offset);
7a291083
JBT		 1431 swqe->descriptors++;
1432 sg1entry_contains_frag_data = 1;
1433 }
1434
1435 for (i = sg1entry_contains_frag_data; i < nfrags; i++) {
1436
1437 frag = &skb_shinfo(skb)->frags[i];
1438 sgentry = &sg_list[i - sg1entry_contains_frag_data];
1439
1440 sgentry->l_key = lkey;
1441 sgentry->len = frag->size;
44a5b3d5
TK		 1442 sgentry->vaddr =
1443 ehea_map_vaddr(page_address(frag->page)
1444 + frag->page_offset);
7a291083
JBT		 1445 swqe->descriptors++;
1446 }
1447 }
1448}
1449
1450static int ehea_broadcast_reg_helper(struct ehea_port *port, u32 hcallid)
1451{
1452 int ret = 0;
1453 u64 hret;
1454 u8 reg_type;
1455
1456 /* De/Register untagged packets */
1457 reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_UNTAGGED;
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 (tagged)",
1463 hcallid == H_REG_BCMC ? "" : "de");
7a291083
JBT		 1464 ret = -EIO;
1465 goto out_herr;
1466 }
1467
1468 /* De/Register VLAN packets */
1469 reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_VLANID_ALL;
1470 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1471 port->logical_port_id,
1472 reg_type, port->mac_addr, 0, hcallid);
1473 if (hret != H_SUCCESS) {
f9e29228
TK		 1474 ehea_error("%sregistering bc address failed (vlan)",
1475 hcallid == H_REG_BCMC ? "" : "de");
7a291083
JBT		 1476 ret = -EIO;
1477 }
1478out_herr:
1479 return ret;
1480}
1481
1482static int ehea_set_mac_addr(struct net_device *dev, void *sa)
1483{
1484 struct ehea_port *port = netdev_priv(dev);
1485 struct sockaddr *mac_addr = sa;
1486 struct hcp_ehea_port_cb0 *cb0;
1487 int ret;
1488 u64 hret;
1489
1490 if (!is_valid_ether_addr(mac_addr->sa_data)) {
1491 ret = -EADDRNOTAVAIL;
1492 goto out;
1493 }
1494
a1d261c5 1495 cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL);
7a291083
JBT		 1496 if (!cb0) {
1497 ehea_error("no mem for cb0");
1498 ret = -ENOMEM;
1499 goto out;
1500 }
1501
1502 memcpy(&(cb0->port_mac_addr), &(mac_addr->sa_data[0]), ETH_ALEN);
1503
1504 cb0->port_mac_addr = cb0->port_mac_addr >> 16;
1505
1506 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1507 port->logical_port_id, H_PORT_CB0,
1508 EHEA_BMASK_SET(H_PORT_CB0_MAC, 1), cb0);
1509 if (hret != H_SUCCESS) {
1510 ret = -EIO;
1511 goto out_free;
1512 }
1513
1514 memcpy(dev->dev_addr, mac_addr->sa_data, dev->addr_len);
1515
1516 /* Deregister old MAC in pHYP */
1517 ret = ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
1518 if (ret)
1519 goto out_free;
1520
1521 port->mac_addr = cb0->port_mac_addr << 16;
1522
1523 /* Register new MAC in pHYP */
1524 ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
1525 if (ret)
1526 goto out_free;
1527
1528 ret = 0;
1529out_free:
1530 kfree(cb0);
1531out:
1532 return ret;
1533}
1534
1535static void ehea_promiscuous_error(u64 hret, int enable)
1536{
7674a588
TK		 1537 if (hret == H_AUTHORITY)
1538 ehea_info("Hypervisor denied %sabling promiscuous mode",
1539 enable == 1 ? "en" : "dis");
1540 else
1541 ehea_error("failed %sabling promiscuous mode",
1542 enable == 1 ? "en" : "dis");
7a291083
JBT		 1543}
1544
1545static void ehea_promiscuous(struct net_device *dev, int enable)
1546{
1547 struct ehea_port *port = netdev_priv(dev);
1548 struct hcp_ehea_port_cb7 *cb7;
1549 u64 hret;
1550
1551 if ((enable && port->promisc) || (!enable && !port->promisc))
1552 return;
1553
a1d261c5 1554 cb7 = kzalloc(PAGE_SIZE, GFP_ATOMIC);
7a291083
JBT		 1555 if (!cb7) {
1556 ehea_error("no mem for cb7");
1557 goto out;
1558 }
1559
1560 /* Modify Pxs_DUCQPN in CB7 */
1561 cb7->def_uc_qpn = enable == 1 ? port->port_res[0].qp->fw_handle : 0;
1562
1563 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1564 port->logical_port_id,
1565 H_PORT_CB7, H_PORT_CB7_DUCQPN, cb7);
1566 if (hret) {
1567 ehea_promiscuous_error(hret, enable);
1568 goto out;
1569 }
1570
1571 port->promisc = enable;
1572out:
1573 kfree(cb7);
1574 return;
1575}
1576
1577static u64 ehea_multicast_reg_helper(struct ehea_port *port, u64 mc_mac_addr,
1578 u32 hcallid)
1579{
1580 u64 hret;
1581 u8 reg_type;
1582
1583 reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST
1584 | EHEA_BCMC_UNTAGGED;
1585
1586 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1587 port->logical_port_id,
1588 reg_type, mc_mac_addr, 0, hcallid);
1589 if (hret)
1590 goto out;
1591
1592 reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST
1593 | EHEA_BCMC_VLANID_ALL;
1594
1595 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1596 port->logical_port_id,
1597 reg_type, mc_mac_addr, 0, hcallid);
1598out:
1599 return hret;
1600}
1601
1602static int ehea_drop_multicast_list(struct net_device *dev)
1603{
1604 struct ehea_port *port = netdev_priv(dev);
1605 struct ehea_mc_list *mc_entry = port->mc_list;
1606 struct list_head *pos;
1607 struct list_head *temp;
1608 int ret = 0;
1609 u64 hret;
1610
1611 list_for_each_safe(pos, temp, &(port->mc_list->list)) {
1612 mc_entry = list_entry(pos, struct ehea_mc_list, list);
1613
1614 hret = ehea_multicast_reg_helper(port, mc_entry->macaddr,
1615 H_DEREG_BCMC);
1616 if (hret) {
1617 ehea_error("failed deregistering mcast MAC");
1618 ret = -EIO;
1619 }
1620
1621 list_del(pos);
1622 kfree(mc_entry);
1623 }
1624 return ret;
1625}
1626
1627static void ehea_allmulti(struct net_device *dev, int enable)
1628{
1629 struct ehea_port *port = netdev_priv(dev);
1630 u64 hret;
1631
1632 if (!port->allmulti) {
1633 if (enable) {
1634 /* Enable ALLMULTI */
1635 ehea_drop_multicast_list(dev);
1636 hret = ehea_multicast_reg_helper(port, 0, H_REG_BCMC);
1637 if (!hret)
1638 port->allmulti = 1;
1639 else
1640 ehea_error("failed enabling IFF_ALLMULTI");
1641 }
1642 } else
1643 if (!enable) {
1644 /* Disable ALLMULTI */
1645 hret = ehea_multicast_reg_helper(port, 0, H_DEREG_BCMC);
1646 if (!hret)
1647 port->allmulti = 0;
1648 else
1649 ehea_error("failed disabling IFF_ALLMULTI");
1650 }
1651}
1652
1653static void ehea_add_multicast_entry(struct ehea_port* port, u8* mc_mac_addr)
1654{
1655 struct ehea_mc_list *ehea_mcl_entry;
1656 u64 hret;
1657
1e1675cc 1658 ehea_mcl_entry = kzalloc(sizeof(*ehea_mcl_entry), GFP_ATOMIC);
7a291083
JBT		 1659 if (!ehea_mcl_entry) {
1660 ehea_error("no mem for mcl_entry");
1661 return;
1662 }
1663
1664 INIT_LIST_HEAD(&ehea_mcl_entry->list);
1665
1666 memcpy(&ehea_mcl_entry->macaddr, mc_mac_addr, ETH_ALEN);
1667
1668 hret = ehea_multicast_reg_helper(port, ehea_mcl_entry->macaddr,
1669 H_REG_BCMC);
1670 if (!hret)
1671 list_add(&ehea_mcl_entry->list, &port->mc_list->list);
1672 else {
1673 ehea_error("failed registering mcast MAC");
1674 kfree(ehea_mcl_entry);
1675 }
1676}
1677
1678static void ehea_set_multicast_list(struct net_device *dev)
1679{
1680 struct ehea_port *port = netdev_priv(dev);
1681 struct dev_mc_list *k_mcl_entry;
1682 int ret, i;
1683
1684 if (dev->flags & IFF_PROMISC) {
1685 ehea_promiscuous(dev, 1);
1686 return;
1687 }
1688 ehea_promiscuous(dev, 0);
1689
1690 if (dev->flags & IFF_ALLMULTI) {
1691 ehea_allmulti(dev, 1);
1692 return;
1693 }
1694 ehea_allmulti(dev, 0);
1695
1696 if (dev->mc_count) {
1697 ret = ehea_drop_multicast_list(dev);
1698 if (ret) {
1699 /* Dropping the current multicast list failed.
1700 * Enabling ALL_MULTI is the best we can do.
1701 */
1702 ehea_allmulti(dev, 1);
1703 }
1704
1705 if (dev->mc_count > port->adapter->max_mc_mac) {
1706 ehea_info("Mcast registration limit reached (0x%lx). "
1707 "Use ALLMULTI!",
1708 port->adapter->max_mc_mac);
1709 goto out;
1710 }
1711
1712 for (i = 0, k_mcl_entry = dev->mc_list;
1713 i < dev->mc_count;
1714 i++, k_mcl_entry = k_mcl_entry->next) {
1715 ehea_add_multicast_entry(port, k_mcl_entry->dmi_addr);
1716 }
1717 }
1718out:
1719 return;
1720}
1721
1722static int ehea_change_mtu(struct net_device *dev, int new_mtu)
1723{
1724 if ((new_mtu < 68) || (new_mtu > EHEA_MAX_PACKET_SIZE))
1725 return -EINVAL;
1726 dev->mtu = new_mtu;
1727 return 0;
1728}
1729
1730static void ehea_xmit2(struct sk_buff *skb, struct net_device *dev,
1731 struct ehea_swqe *swqe, u32 lkey)
1732{
1733 if (skb->protocol == htons(ETH_P_IP)) {
eddc9ec5 1734 const struct iphdr *iph = ip_hdr(skb);
d1d25aab 1735
7a291083
JBT		 1736 /* IPv4 */
1737 swqe->tx_control |= EHEA_SWQE_CRC
1738 | EHEA_SWQE_IP_CHECKSUM
1739 | EHEA_SWQE_TCP_CHECKSUM
1740 | EHEA_SWQE_IMM_DATA_PRESENT
1741 | EHEA_SWQE_DESCRIPTORS_PRESENT;
1742
1743 write_ip_start_end(swqe, skb);
1744
eddc9ec5 1745 if (iph->protocol == IPPROTO_UDP) {
d1d25aab
JBT		 1746 if ((iph->frag_off & IP_MF)
1747 || (iph->frag_off & IP_OFFSET))
7a291083
JBT		 1748 /* IP fragment, so don't change cs */
1749 swqe->tx_control &= ~EHEA_SWQE_TCP_CHECKSUM;
1750 else
1751 write_udp_offset_end(swqe, skb);
eddc9ec5 1752 } else if (iph->protocol == IPPROTO_TCP) {
7a291083
JBT		 1753 write_tcp_offset_end(swqe, skb);
1754 }
1755
1756 /* icmp (big data) and ip segmentation packets (all other ip
1757 packets) do not require any special handling */
1758
1759 } else {
1760 /* Other Ethernet Protocol */
1761 swqe->tx_control |= EHEA_SWQE_CRC
1762 | EHEA_SWQE_IMM_DATA_PRESENT
1763 | EHEA_SWQE_DESCRIPTORS_PRESENT;
1764 }
1765
1766 write_swqe2_data(skb, dev, swqe, lkey);
1767}
1768
1769static void ehea_xmit3(struct sk_buff *skb, struct net_device *dev,
1770 struct ehea_swqe *swqe)
1771{
1772 int nfrags = skb_shinfo(skb)->nr_frags;
1773 u8 *imm_data = &swqe->u.immdata_nodesc.immediate_data[0];
1774 skb_frag_t *frag;
1775 int i;
1776
1777 if (skb->protocol == htons(ETH_P_IP)) {
eddc9ec5 1778 const struct iphdr *iph = ip_hdr(skb);
d1d25aab 1779
7a291083
JBT		 1780 /* IPv4 */
1781 write_ip_start_end(swqe, skb);
1782
eddc9ec5 1783 if (iph->protocol == IPPROTO_TCP) {
7a291083
JBT		 1784 swqe->tx_control |= EHEA_SWQE_CRC
1785 | EHEA_SWQE_IP_CHECKSUM
1786 | EHEA_SWQE_TCP_CHECKSUM
1787 | EHEA_SWQE_IMM_DATA_PRESENT;
1788
1789 write_tcp_offset_end(swqe, skb);
1790
eddc9ec5 1791 } else if (iph->protocol == IPPROTO_UDP) {
d1d25aab
JBT		 1792 if ((iph->frag_off & IP_MF)
1793 || (iph->frag_off & IP_OFFSET))
7a291083
JBT		 1794 /* IP fragment, so don't change cs */
1795 swqe->tx_control |= EHEA_SWQE_CRC
1796 | EHEA_SWQE_IMM_DATA_PRESENT;
1797 else {
1798 swqe->tx_control |= EHEA_SWQE_CRC
1799 | EHEA_SWQE_IP_CHECKSUM
1800 | EHEA_SWQE_TCP_CHECKSUM
1801 | EHEA_SWQE_IMM_DATA_PRESENT;
1802
1803 write_udp_offset_end(swqe, skb);
1804 }
1805 } else {
1806 /* icmp (big data) and
1807 ip segmentation packets (all other ip packets) */
1808 swqe->tx_control |= EHEA_SWQE_CRC
1809 | EHEA_SWQE_IP_CHECKSUM
1810 | EHEA_SWQE_IMM_DATA_PRESENT;
1811 }
1812 } else {
1813 /* Other Ethernet Protocol */
1814 swqe->tx_control |= EHEA_SWQE_CRC | EHEA_SWQE_IMM_DATA_PRESENT;
1815 }
1816 /* copy (immediate) data */
1817 if (nfrags == 0) {
1818 /* data is in a single piece */
d626f62b 1819 skb_copy_from_linear_data(skb, imm_data, skb->len);
7a291083
JBT		 1820 } else {
1821 /* first copy data from the skb->data buffer ... */
d626f62b
ACM		 1822 skb_copy_from_linear_data(skb, imm_data,
1823 skb->len - skb->data_len);
7a291083
JBT		 1824 imm_data += skb->len - skb->data_len;
1825
1826 /* ... then copy data from the fragments */
1827 for (i = 0; i < nfrags; i++) {
1828 frag = &skb_shinfo(skb)->frags[i];
1829 memcpy(imm_data,
1830 page_address(frag->page) + frag->page_offset,
1831 frag->size);
1832 imm_data += frag->size;
1833 }
1834 }
1835 swqe->immediate_data_length = skb->len;
1836 dev_kfree_skb(skb);
1837}
1838
18604c54
JBT		 1839static inline int ehea_hash_skb(struct sk_buff *skb, int num_qps)
1840{
1841 struct tcphdr *tcp;
1842 u32 tmp;
1843
1844 if ((skb->protocol == htons(ETH_P_IP)) &&
88ca2d07
TK		 1845 (ip_hdr(skb)->protocol == IPPROTO_TCP)) {
1846 tcp = (struct tcphdr*)(skb_network_header(skb) + (ip_hdr(skb)->ihl * 4));
18604c54 1847 tmp = (tcp->source + (tcp->dest << 16)) % 31;
88ca2d07 1848 tmp += ip_hdr(skb)->daddr % 31;
18604c54
JBT		 1849 return tmp % num_qps;
1850 }
1851 else
1852 return 0;
1853}
1854
7a291083
JBT		 1855static int ehea_start_xmit(struct sk_buff *skb, struct net_device *dev)
1856{
1857 struct ehea_port *port = netdev_priv(dev);
1858 struct ehea_swqe *swqe;
1859 unsigned long flags;
1860 u32 lkey;
1861 int swqe_index;
18604c54
JBT		 1862 struct ehea_port_res *pr;
1863
1864 pr = &port->port_res[ehea_hash_skb(skb, port->num_tx_qps)];
1865
18604c54
JBT		 1866 if (!spin_trylock(&pr->xmit_lock))
1867 return NETDEV_TX_BUSY;
1868
1869 if (pr->queue_stopped) {
1870 spin_unlock(&pr->xmit_lock);
1871 return NETDEV_TX_BUSY;
1872 }
7a291083
JBT		 1873
1874 swqe = ehea_get_swqe(pr->qp, &swqe_index);
1875 memset(swqe, 0, SWQE_HEADER_SIZE);
1876 atomic_dec(&pr->swqe_avail);
1877
1878 if (skb->len <= SWQE3_MAX_IMM) {
1879 u32 sig_iv = port->sig_comp_iv;
1880 u32 swqe_num = pr->swqe_id_counter;
1881 ehea_xmit3(skb, dev, swqe);
1882 swqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE3_TYPE)
1883 | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, swqe_num);
1884 if (pr->swqe_ll_count >= (sig_iv - 1)) {
1885 swqe->wr_id |= EHEA_BMASK_SET(EHEA_WR_ID_REFILL,
1886 sig_iv);
1887 swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
1888 pr->swqe_ll_count = 0;
1889 } else
1890 pr->swqe_ll_count += 1;
1891 } else {
1892 swqe->wr_id =
1893 EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE2_TYPE)
1894 | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, pr->swqe_id_counter)
acbddb59 1895 | EHEA_BMASK_SET(EHEA_WR_ID_REFILL, 1)
7a291083
JBT		 1896 | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, pr->sq_skba.index);
1897 pr->sq_skba.arr[pr->sq_skba.index] = skb;
1898
1899 pr->sq_skba.index++;
1900 pr->sq_skba.index &= (pr->sq_skba.len - 1);
1901
1902 lkey = pr->send_mr.lkey;
1903 ehea_xmit2(skb, dev, swqe, lkey);
acbddb59 1904 swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
7a291083
JBT		 1905 }
1906 pr->swqe_id_counter += 1;
1907
1908 if (port->vgrp && vlan_tx_tag_present(skb)) {
1909 swqe->tx_control |= EHEA_SWQE_VLAN_INSERT;
1910 swqe->vlan_tag = vlan_tx_tag_get(skb);
1911 }
1912
1913 if (netif_msg_tx_queued(port)) {
1914 ehea_info("post swqe on QP %d", pr->qp->init_attr.qp_nr);
bff0a55f 1915 ehea_dump(swqe, 512, "swqe");
7a291083
JBT		 1916 }
1917
44c82152
TK		 1918 if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags)))
1919 goto out;
1920
7a291083
JBT		 1921 ehea_post_swqe(pr->qp, swqe);
1922 pr->tx_packets++;
1923
1924 if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) {
1925 spin_lock_irqsave(&pr->netif_queue, flags);
1926 if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) {
acbddb59 1927 pr->p_stats.queue_stopped++;
7a291083
JBT		 1928 netif_stop_queue(dev);
1929 pr->queue_stopped = 1;
1930 }
1931 spin_unlock_irqrestore(&pr->netif_queue, flags);
1932 }
1933 dev->trans_start = jiffies;
1934 spin_unlock(&pr->xmit_lock);
44c82152 1935out:
7a291083
JBT		 1936 return NETDEV_TX_OK;
1937}
1938
1939static void ehea_vlan_rx_register(struct net_device *dev,
1940 struct vlan_group *grp)
1941{
1942 struct ehea_port *port = netdev_priv(dev);
1943 struct ehea_adapter *adapter = port->adapter;
1944 struct hcp_ehea_port_cb1 *cb1;
1945 u64 hret;
1946
1947 port->vgrp = grp;
1948
a1d261c5 1949 cb1 = kzalloc(PAGE_SIZE, GFP_KERNEL);
7a291083
JBT		 1950 if (!cb1) {
1951 ehea_error("no mem for cb1");
1952 goto out;
1953 }
1954
dec590c1 1955 memset(cb1->vlan_filter, 0, sizeof(cb1->vlan_filter));
7a291083
JBT		 1956
1957 hret = ehea_h_modify_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("modify_ehea_port failed");
1961
1962 kfree(cb1);
1963out:
1964 return;
1965}
1966
1967static void ehea_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
1968{
1969 struct ehea_port *port = netdev_priv(dev);
1970 struct ehea_adapter *adapter = port->adapter;
1971 struct hcp_ehea_port_cb1 *cb1;
1972 int index;
1973 u64 hret;
1974
a1d261c5 1975 cb1 = kzalloc(PAGE_SIZE, GFP_KERNEL);
7a291083
JBT		 1976 if (!cb1) {
1977 ehea_error("no mem for cb1");
1978 goto out;
1979 }
1980
1981 hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
1982 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
1983 if (hret != H_SUCCESS) {
1984 ehea_error("query_ehea_port failed");
1985 goto out;
1986 }
1987
1988 index = (vid / 64);
dec590c1 1989 cb1->vlan_filter[index] |= ((u64)(0x8000000000000000 >> (vid & 0x3F)));
7a291083
JBT		 1990
1991 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
1992 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
1993 if (hret != H_SUCCESS)
1994 ehea_error("modify_ehea_port failed");
1995out:
1996 kfree(cb1);
1997 return;
1998}
1999
2000static void ehea_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
2001{
2002 struct ehea_port *port = netdev_priv(dev);
2003 struct ehea_adapter *adapter = port->adapter;
2004 struct hcp_ehea_port_cb1 *cb1;
2005 int index;
2006 u64 hret;
2007
5c15bdec 2008 vlan_group_set_device(port->vgrp, vid, NULL);
7a291083 2009
a1d261c5 2010 cb1 = kzalloc(PAGE_SIZE, GFP_KERNEL);
7a291083
JBT		 2011 if (!cb1) {
2012 ehea_error("no mem for cb1");
2013 goto out;
2014 }
2015
2016 hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
2017 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2018 if (hret != H_SUCCESS) {
2019 ehea_error("query_ehea_port failed");
2020 goto out;
2021 }
2022
2023 index = (vid / 64);
dec590c1 2024 cb1->vlan_filter[index] &= ~((u64)(0x8000000000000000 >> (vid & 0x3F)));
7a291083
JBT		 2025
2026 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
2027 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2028 if (hret != H_SUCCESS)
2029 ehea_error("modify_ehea_port failed");
2030out:
2031 kfree(cb1);
2032 return;
2033}
2034
2035int ehea_activate_qp(struct ehea_adapter *adapter, struct ehea_qp *qp)
2036{
2037 int ret = -EIO;
2038 u64 hret;
2039 u16 dummy16 = 0;
2040 u64 dummy64 = 0;
2041 struct hcp_modify_qp_cb0* cb0;
2042
a1d261c5 2043 cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL);
7a291083
JBT		 2044 if (!cb0) {
2045 ret = -ENOMEM;
2046 goto out;
2047 }
2048
2049 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2050 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2051 if (hret != H_SUCCESS) {
2052 ehea_error("query_ehea_qp failed (1)");
2053 goto out;
2054 }
2055
2056 cb0->qp_ctl_reg = H_QP_CR_STATE_INITIALIZED;
2057 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2058 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2059 &dummy64, &dummy64, &dummy16, &dummy16);
2060 if (hret != H_SUCCESS) {
2061 ehea_error("modify_ehea_qp failed (1)");
2062 goto out;
2063 }
2064
2065 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2066 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2067 if (hret != H_SUCCESS) {
2068 ehea_error("query_ehea_qp failed (2)");
2069 goto out;
2070 }
2071
2072 cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_INITIALIZED;
2073 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2074 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2075 &dummy64, &dummy64, &dummy16, &dummy16);
2076 if (hret != H_SUCCESS) {
2077 ehea_error("modify_ehea_qp failed (2)");
2078 goto out;
2079 }
2080
2081 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2082 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2083 if (hret != H_SUCCESS) {
2084 ehea_error("query_ehea_qp failed (3)");
2085 goto out;
2086 }
2087
2088 cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_RDY2SND;
2089 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2090 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2091 &dummy64, &dummy64, &dummy16, &dummy16);
2092 if (hret != H_SUCCESS) {
2093 ehea_error("modify_ehea_qp failed (3)");
2094 goto out;
2095 }
2096
2097 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2098 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2099 if (hret != H_SUCCESS) {
2100 ehea_error("query_ehea_qp failed (4)");
2101 goto out;
2102 }
2103
2104 ret = 0;
2105out:
2106 kfree(cb0);
2107 return ret;
2108}
2109
2110static int ehea_port_res_setup(struct ehea_port *port, int def_qps,
2111 int add_tx_qps)
2112{
2113 int ret, i;
2114 struct port_res_cfg pr_cfg, pr_cfg_small_rx;
2115 enum ehea_eq_type eq_type = EHEA_EQ;
2116
2117 port->qp_eq = ehea_create_eq(port->adapter, eq_type,
2118 EHEA_MAX_ENTRIES_EQ, 1);
2119 if (!port->qp_eq) {
2120 ret = -EINVAL;
2121 ehea_error("ehea_create_eq failed (qp_eq)");
2122 goto out_kill_eq;
2123 }
2124
2125 pr_cfg.max_entries_rcq = rq1_entries + rq2_entries + rq3_entries;
18604c54 2126 pr_cfg.max_entries_scq = sq_entries * 2;
7a291083
JBT		 2127 pr_cfg.max_entries_sq = sq_entries;
2128 pr_cfg.max_entries_rq1 = rq1_entries;
2129 pr_cfg.max_entries_rq2 = rq2_entries;
2130 pr_cfg.max_entries_rq3 = rq3_entries;
2131
2132 pr_cfg_small_rx.max_entries_rcq = 1;
2133 pr_cfg_small_rx.max_entries_scq = sq_entries;
2134 pr_cfg_small_rx.max_entries_sq = sq_entries;
2135 pr_cfg_small_rx.max_entries_rq1 = 1;
2136 pr_cfg_small_rx.max_entries_rq2 = 1;
2137 pr_cfg_small_rx.max_entries_rq3 = 1;
2138
2139 for (i = 0; i < def_qps; i++) {
2140 ret = ehea_init_port_res(port, &port->port_res[i], &pr_cfg, i);
2141 if (ret)
2142 goto out_clean_pr;
2143 }
2144 for (i = def_qps; i < def_qps + add_tx_qps; i++) {
2145 ret = ehea_init_port_res(port, &port->port_res[i],
2146 &pr_cfg_small_rx, i);
2147 if (ret)
2148 goto out_clean_pr;
2149 }
2150
2151 return 0;
2152
2153out_clean_pr:
2154 while (--i >= 0)
2155 ehea_clean_portres(port, &port->port_res[i]);
2156
2157out_kill_eq:
2158 ehea_destroy_eq(port->qp_eq);
2159 return ret;
2160}
2161
2162static int ehea_clean_all_portres(struct ehea_port *port)
2163{
2164 int ret = 0;
2165 int i;
2166
2167 for(i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
2168 ret |= ehea_clean_portres(port, &port->port_res[i]);
2169
2170 ret |= ehea_destroy_eq(port->qp_eq);
2171
2172 return ret;
2173}
2174
35cf2e2e 2175static void ehea_remove_adapter_mr(struct ehea_adapter *adapter)
1211bb6d 2176{
35cf2e2e
TK		 2177 if (adapter->active_ports)
2178 return;
1211bb6d
TK		 2179
2180 ehea_rem_mr(&adapter->mr);
2181}
2182
35cf2e2e 2183static int ehea_add_adapter_mr(struct ehea_adapter *adapter)
1211bb6d 2184{
35cf2e2e
TK		 2185 if (adapter->active_ports)
2186 return 0;
1211bb6d
TK		 2187
2188 return ehea_reg_kernel_mr(adapter, &adapter->mr);
2189}
2190
7a291083
JBT		 2191static int ehea_up(struct net_device *dev)
2192{
2193 int ret, i;
2194 struct ehea_port *port = netdev_priv(dev);
7a291083
JBT		 2195
2196 if (port->state == EHEA_PORT_UP)
2197 return 0;
2198
2199 ret = ehea_port_res_setup(port, port->num_def_qps,
2200 port->num_add_tx_qps);
2201 if (ret) {
2202 ehea_error("port_res_failed");
2203 goto out;
2204 }
2205
2206 /* Set default QP for this port */
2207 ret = ehea_configure_port(port);
2208 if (ret) {
2209 ehea_error("ehea_configure_port failed. ret:%d", ret);
2210 goto out_clean_pr;
2211 }
2212
7a291083
JBT		 2213 ret = ehea_reg_interrupts(dev);
2214 if (ret) {
f9e29228
TK		 2215 ehea_error("reg_interrupts failed. ret:%d", ret);
2216 goto out_clean_pr;
7a291083
JBT		 2217 }
2218
2219 for(i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
2220 ret = ehea_activate_qp(port->adapter, port->port_res[i].qp);
2221 if (ret) {
2222 ehea_error("activate_qp failed");
2223 goto out_free_irqs;
2224 }
2225 }
2226
2227 for(i = 0; i < port->num_def_qps; i++) {
2228 ret = ehea_fill_port_res(&port->port_res[i]);
2229 if (ret) {
2230 ehea_error("out_free_irqs");
2231 goto out_free_irqs;
2232 }
2233 }
2234
2235 ret = 0;
2236 port->state = EHEA_PORT_UP;
2237 goto out;
2238
2239out_free_irqs:
2240 ehea_free_interrupts(dev);
2241
7a291083
JBT		 2242out_clean_pr:
2243 ehea_clean_all_portres(port);
2244out:
44c82152
TK		 2245 if (ret)
2246 ehea_info("Failed starting %s. ret=%i", dev->name, ret);
2247
7a291083
JBT		 2248 return ret;
2249}
2250
2251static int ehea_open(struct net_device *dev)
2252{
2253 int ret;
2254 struct ehea_port *port = netdev_priv(dev);
2255
2256 down(&port->port_lock);
2257
2258 if (netif_msg_ifup(port))
2259 ehea_info("enabling port %s", dev->name);
2260
2261 ret = ehea_up(dev);
2262 if (!ret)
2263 netif_start_queue(dev);
2264
2265 up(&port->port_lock);
2266
2267 return ret;
2268}
2269
2270static int ehea_down(struct net_device *dev)
2271{
2272 int ret, i;
2273 struct ehea_port *port = netdev_priv(dev);
2274
2275 if (port->state == EHEA_PORT_DOWN)
2276 return 0;
2277
2278 ehea_drop_multicast_list(dev);
2279 ehea_free_interrupts(dev);
2280
18604c54 2281 for (i = 0; i < port->num_def_qps; i++)
e542aa6b 2282 while (test_bit(__LINK_STATE_RX_SCHED,
18604c54
JBT		 2283 &port->port_res[i].d_netdev->state))
2284 msleep(1);
7a291083 2285
7a291083 2286 port->state = EHEA_PORT_DOWN;
44c82152
TK		 2287
2288 ret = ehea_clean_all_portres(port);
2289 if (ret)
2290 ehea_info("Failed freeing resources for %s. ret=%i",
2291 dev->name, ret);
2292
7a291083
JBT		 2293 return ret;
2294}
2295
2296static int ehea_stop(struct net_device *dev)
2297{
2298 int ret;
2299 struct ehea_port *port = netdev_priv(dev);
2300
2301 if (netif_msg_ifdown(port))
2302 ehea_info("disabling port %s", dev->name);
2303
2304 flush_workqueue(port->adapter->ehea_wq);
2305 down(&port->port_lock);
2306 netif_stop_queue(dev);
2307 ret = ehea_down(dev);
2308 up(&port->port_lock);
2309 return ret;
2310}
2311
c4028958 2312static void ehea_reset_port(struct work_struct *work)
7a291083
JBT		 2313{
2314 int ret;
c4028958
DH		 2315 struct ehea_port *port =
2316 container_of(work, struct ehea_port, reset_task);
2317 struct net_device *dev = port->netdev;
7a291083
JBT		 2318
2319 port->resets++;
2320 down(&port->port_lock);
2321 netif_stop_queue(dev);
2322 netif_poll_disable(dev);
2323
44c82152 2324 ehea_down(dev);
7a291083
JBT		 2325
2326 ret = ehea_up(dev);
44c82152 2327 if (ret)
7a291083 2328 goto out;
7a291083
JBT		 2329
2330 if (netif_msg_timer(port))
2331 ehea_info("Device %s resetted successfully", dev->name);
2332
2333 netif_poll_enable(dev);
2334 netif_wake_queue(dev);
2335out:
2336 up(&port->port_lock);
2337 return;
2338}
2339
44c82152
TK		 2340static void ehea_rereg_mrs(struct work_struct *work)
2341{
2342 int ret, i;
2343 struct ehea_adapter *adapter;
2344
2345 ehea_info("LPAR memory enlarged - re-initializing driver");
2346
2347 list_for_each_entry(adapter, &adapter_list, list)
2348 if (adapter->active_ports) {
2349 /* Shutdown all ports */
2350 for (i = 0; i < EHEA_MAX_PORTS; i++) {
2351 struct ehea_port *port = adapter->port[i];
2352
2353 if (port) {
2354 struct net_device *dev = port->netdev;
2355
2356 if (dev->flags & IFF_UP) {
2357 ehea_info("stopping %s",
2358 dev->name);
2359 down(&port->port_lock);
2360 netif_stop_queue(dev);
2361 netif_poll_disable(dev);
2362 ehea_down(dev);
2363 up(&port->port_lock);
2364 }
2365 }
2366 }
2367
2368 /* Unregister old memory region */
2369 ret = ehea_rem_mr(&adapter->mr);
2370 if (ret) {
2371 ehea_error("unregister MR failed - driver"
2372 " inoperable!");
2373 goto out;
2374 }
2375 }
2376
2377 ehea_destroy_busmap();
2378
2379 ret = ehea_create_busmap();
2380 if (ret)
2381 goto out;
2382
2383 clear_bit(__EHEA_STOP_XFER, &ehea_driver_flags);
2384
2385 list_for_each_entry(adapter, &adapter_list, list)
2386 if (adapter->active_ports) {
2387 /* Register new memory region */
2388 ret = ehea_reg_kernel_mr(adapter, &adapter->mr);
2389 if (ret) {
2390 ehea_error("register MR failed - driver"
2391 " inoperable!");
2392 goto out;
2393 }
2394
2395 /* Restart all ports */
2396 for (i = 0; i < EHEA_MAX_PORTS; i++) {
2397 struct ehea_port *port = adapter->port[i];
2398
2399 if (port) {
2400 struct net_device *dev = port->netdev;
2401
2402 if (dev->flags & IFF_UP) {
2403 ehea_info("restarting %s",
2404 dev->name);
2405 down(&port->port_lock);
2406
2407 ret = ehea_up(dev);
2408 if (!ret) {
2409 netif_poll_enable(dev);
2410 netif_wake_queue(dev);
2411 }
2412
2413 up(&port->port_lock);
2414 }
2415 }
2416 }
2417 }
2418out:
2419 return;
2420}
2421
7a291083
JBT		 2422static void ehea_tx_watchdog(struct net_device *dev)
2423{
2424 struct ehea_port *port = netdev_priv(dev);
2425
2426 if (netif_carrier_ok(dev))
2427 queue_work(port->adapter->ehea_wq, &port->reset_task);
2428}
2429
2430int ehea_sense_adapter_attr(struct ehea_adapter *adapter)
2431{
2432 struct hcp_query_ehea *cb;
2433 u64 hret;
2434 int ret;
2435
a1d261c5 2436 cb = kzalloc(PAGE_SIZE, GFP_KERNEL);
7a291083
JBT		 2437 if (!cb) {
2438 ret = -ENOMEM;
2439 goto out;
2440 }
2441
2442 hret = ehea_h_query_ehea(adapter->handle, cb);
2443
2444 if (hret != H_SUCCESS) {
2445 ret = -EIO;
2446 goto out_herr;
2447 }
2448
7a291083
JBT		 2449 adapter->max_mc_mac = cb->max_mc_mac - 1;
2450 ret = 0;
2451
2452out_herr:
2453 kfree(cb);
2454out:
2455 return ret;
2456}
2457
1acf2318 2458int ehea_get_jumboframe_status(struct ehea_port *port, int *jumbo)
7a291083 2459{
7a291083 2460 struct hcp_ehea_port_cb4 *cb4;
1acf2318
JBT		 2461 u64 hret;
2462 int ret = 0;
7a291083 2463
1acf2318 2464 *jumbo = 0;
7a291083 2465
1acf2318 2466 /* (Try to) enable *jumbo frames */
a1d261c5 2467 cb4 = kzalloc(PAGE_SIZE, GFP_KERNEL);
7a291083
JBT		 2468 if (!cb4) {
2469 ehea_error("no mem for cb4");
1acf2318
JBT		 2470 ret = -ENOMEM;
2471 goto out;
7a291083 2472 } else {
1acf2318 2473 hret = ehea_h_query_ehea_port(port->adapter->handle,
9c750b7d
TK		 2474 port->logical_port_id,
2475 H_PORT_CB4,
2476 H_PORT_CB4_JUMBO, cb4);
9c750b7d
TK		 2477 if (hret == H_SUCCESS) {
2478 if (cb4->jumbo_frame)
1acf2318 2479 *jumbo = 1;
9c750b7d
TK		 2480 else {
2481 cb4->jumbo_frame = 1;
1acf2318
JBT		 2482 hret = ehea_h_modify_ehea_port(port->adapter->
2483 handle,
9c750b7d 2484 port->
1acf2318 2485 logical_port_id,
9c750b7d
TK		 2486 H_PORT_CB4,
2487 H_PORT_CB4_JUMBO,
2488 cb4);
2489 if (hret == H_SUCCESS)
1acf2318 2490 *jumbo = 1;
9c750b7d 2491 }
1acf2318
JBT		 2492 } else
2493 ret = -EINVAL;
2494
7a291083
JBT		 2495 kfree(cb4);
2496 }
1acf2318
JBT		 2497out:
2498 return ret;
2499}
2500
2501static ssize_t ehea_show_port_id(struct device *dev,
2502 struct device_attribute *attr, char *buf)
2503{
2504 struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev);
a8e34fda 2505 return sprintf(buf, "%d", port->logical_port_id);
1acf2318
JBT		 2506}
2507
2508static DEVICE_ATTR(log_port_id, S_IRUSR | S_IRGRP | S_IROTH, ehea_show_port_id,
2509 NULL);
2510
2511static void __devinit logical_port_release(struct device *dev)
2512{
2513 struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev);
2514 of_node_put(port->ofdev.node);
2515}
2516
d1dea38d 2517static int ehea_driver_sysfs_add(struct device *dev,
d1d25aab 2518 struct device_driver *driver)
d1dea38d
TK		 2519{
2520 int ret;
2521
2522 ret = sysfs_create_link(&driver->kobj, &dev->kobj,
2523 kobject_name(&dev->kobj));
2524 if (ret == 0) {
2525 ret = sysfs_create_link(&dev->kobj, &driver->kobj,
2526 "driver");
2527 if (ret)
2528 sysfs_remove_link(&driver->kobj,
2529 kobject_name(&dev->kobj));
2530 }
2531 return ret;
2532}
2533
2534static void ehea_driver_sysfs_remove(struct device *dev,
d1d25aab 2535 struct device_driver *driver)
d1dea38d
TK		 2536{
2537 struct device_driver *drv = driver;
2538
2539 if (drv) {
2540 sysfs_remove_link(&drv->kobj, kobject_name(&dev->kobj));
2541 sysfs_remove_link(&dev->kobj, "driver");
2542 }
2543}
2544
1acf2318
JBT		 2545static struct device *ehea_register_port(struct ehea_port *port,
2546 struct device_node *dn)
2547{
2548 int ret;
2549
2550 port->ofdev.node = of_node_get(dn);
2551 port->ofdev.dev.parent = &port->adapter->ebus_dev->ofdev.dev;
d1dea38d 2552 port->ofdev.dev.bus = &ibmebus_bus_type;
1acf2318 2553
d1dea38d 2554 sprintf(port->ofdev.dev.bus_id, "port%d", port_name_cnt++);
1acf2318
JBT		 2555 port->ofdev.dev.release = logical_port_release;
2556
2557 ret = of_device_register(&port->ofdev);
2558 if (ret) {
2559 ehea_error("failed to register device. ret=%d", ret);
2560 goto out;
2561 }
2562
2563 ret = device_create_file(&port->ofdev.dev, &dev_attr_log_port_id);
d1d25aab 2564 if (ret) {
1acf2318
JBT		 2565 ehea_error("failed to register attributes, ret=%d", ret);
2566 goto out_unreg_of_dev;
2567 }
e542aa6b 2568
d1dea38d
TK		 2569 ret = ehea_driver_sysfs_add(&port->ofdev.dev, &ehea_driver.driver);
2570 if (ret) {
2571 ehea_error("failed to register sysfs driver link");
2572 goto out_rem_dev_file;
2573 }
2574
1acf2318
JBT		 2575 return &port->ofdev.dev;
2576
d1dea38d
TK		 2577out_rem_dev_file:
2578 device_remove_file(&port->ofdev.dev, &dev_attr_log_port_id);
1acf2318
JBT		 2579out_unreg_of_dev:
2580 of_device_unregister(&port->ofdev);
2581out:
2582 return NULL;
2583}
2584
2585static void ehea_unregister_port(struct ehea_port *port)
2586{
d1dea38d 2587 ehea_driver_sysfs_remove(&port->ofdev.dev, &ehea_driver.driver);
1acf2318
JBT		 2588 device_remove_file(&port->ofdev.dev, &dev_attr_log_port_id);
2589 of_device_unregister(&port->ofdev);
2590}
2591
2592struct ehea_port *ehea_setup_single_port(struct ehea_adapter *adapter,
2593 u32 logical_port_id,
2594 struct device_node *dn)
2595{
2596 int ret;
2597 struct net_device *dev;
2598 struct ehea_port *port;
2599 struct device *port_dev;
2600 int jumbo;
2601
2602 /* allocate memory for the port structures */
2603 dev = alloc_etherdev(sizeof(struct ehea_port));
2604
2605 if (!dev) {
2606 ehea_error("no mem for net_device");
2607 ret = -ENOMEM;
2608 goto out_err;
2609 }
2610
2611 port = netdev_priv(dev);
2612
2613 sema_init(&port->port_lock, 1);
2614 port->state = EHEA_PORT_DOWN;
2615 port->sig_comp_iv = sq_entries / 10;
2616
2617 port->adapter = adapter;
2618 port->netdev = dev;
2619 port->logical_port_id = logical_port_id;
2620
2621 port->msg_enable = netif_msg_init(msg_level, EHEA_MSG_DEFAULT);
2622
2623 port->mc_list = kzalloc(sizeof(struct ehea_mc_list), GFP_KERNEL);
2624 if (!port->mc_list) {
2625 ret = -ENOMEM;
2626 goto out_free_ethdev;
2627 }
2628
2629 INIT_LIST_HEAD(&port->mc_list->list);
2630
2631 ret = ehea_sense_port_attr(port);
2632 if (ret)
2633 goto out_free_mc_list;
2634
2635 port_dev = ehea_register_port(port, dn);
2636 if (!port_dev)
2637 goto out_free_mc_list;
2638
2639 SET_NETDEV_DEV(dev, port_dev);
7a291083
JBT		 2640
2641 /* initialize net_device structure */
2642 SET_MODULE_OWNER(dev);
2643
2644 memcpy(dev->dev_addr, &port->mac_addr, ETH_ALEN);
2645
2646 dev->open = ehea_open;
8d22c971
JBT		 2647 dev->poll = ehea_poll_firstqueue;
2648#ifdef CONFIG_NET_POLL_CONTROLLER
2649 dev->poll_controller = ehea_netpoll;
2650#endif
7a291083
JBT		 2651 dev->weight = 64;
2652 dev->stop = ehea_stop;
2653 dev->hard_start_xmit = ehea_start_xmit;
2654 dev->get_stats = ehea_get_stats;
2655 dev->set_multicast_list = ehea_set_multicast_list;
2656 dev->set_mac_address = ehea_set_mac_addr;
2657 dev->change_mtu = ehea_change_mtu;
2658 dev->vlan_rx_register = ehea_vlan_rx_register;
2659 dev->vlan_rx_add_vid = ehea_vlan_rx_add_vid;
2660 dev->vlan_rx_kill_vid = ehea_vlan_rx_kill_vid;
2661 dev->features = NETIF_F_SG | NETIF_F_FRAGLIST | NETIF_F_TSO
2662 | NETIF_F_HIGHDMA | NETIF_F_HW_CSUM | NETIF_F_HW_VLAN_TX
2663 | NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_FILTER
2664 | NETIF_F_LLTX;
2665 dev->tx_timeout = &ehea_tx_watchdog;
2666 dev->watchdog_timeo = EHEA_WATCH_DOG_TIMEOUT;
2667
c4028958 2668 INIT_WORK(&port->reset_task, ehea_reset_port);
7a291083 2669
f9e29228
TK		 2670 ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
2671 if (ret) {
2672 ret = -EIO;
2673 goto out_unreg_port;
2674 }
2675
7a291083
JBT		 2676 ehea_set_ethtool_ops(dev);
2677
2678 ret = register_netdev(dev);
2679 if (ret) {
2680 ehea_error("register_netdev failed. ret=%d", ret);
f9e29228 2681 goto out_dereg_bc;
7a291083
JBT		 2682 }
2683
1acf2318 2684 ret = ehea_get_jumboframe_status(port, &jumbo);
e542aa6b 2685 if (ret)
1acf2318
JBT		 2686 ehea_error("failed determining jumbo frame status for %s",
2687 port->netdev->name);
2688
9c750b7d
TK		 2689 ehea_info("%s: Jumbo frames are %sabled", dev->name,
2690 jumbo == 1 ? "en" : "dis");
2691
44c82152
TK		 2692 adapter->active_ports++;
2693
1acf2318 2694 return port;
7a291083 2695
f9e29228
TK		 2696out_dereg_bc:
2697 ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
2698
1acf2318
JBT		 2699out_unreg_port:
2700 ehea_unregister_port(port);
2701
2702out_free_mc_list:
7a291083 2703 kfree(port->mc_list);
1acf2318
JBT		 2704
2705out_free_ethdev:
2706 free_netdev(dev);
2707
2708out_err:
2709 ehea_error("setting up logical port with id=%d failed, ret=%d",
2710 logical_port_id, ret);
2711 return NULL;
2712}
2713
2714static void ehea_shutdown_single_port(struct ehea_port *port)
2715{
2716 unregister_netdev(port->netdev);
2717 ehea_unregister_port(port);
f9e29228 2718 ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
1acf2318
JBT		 2719 kfree(port->mc_list);
2720 free_netdev(port->netdev);
44c82152 2721 port->adapter->active_ports--;
7a291083
JBT		 2722}
2723
2724static int ehea_setup_ports(struct ehea_adapter *adapter)
2725{
1acf2318
JBT		 2726 struct device_node *lhea_dn;
2727 struct device_node *eth_dn = NULL;
d1d25aab 2728
9f9a3b8a 2729 const u32 *dn_log_port_id;
1acf2318
JBT		 2730 int i = 0;
2731
2732 lhea_dn = adapter->ebus_dev->ofdev.node;
1eef4e04 2733 while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) {
e542aa6b 2734
40cd3a45 2735 dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no",
d1d25aab 2736 NULL);
1acf2318
JBT		 2737 if (!dn_log_port_id) {
2738 ehea_error("bad device node: eth_dn name=%s",
2739 eth_dn->full_name);
2740 continue;
2741 }
7a291083 2742
1211bb6d
TK		 2743 if (ehea_add_adapter_mr(adapter)) {
2744 ehea_error("creating MR failed");
2745 of_node_put(eth_dn);
2746 return -EIO;
2747 }
2748
1acf2318
JBT		 2749 adapter->port[i] = ehea_setup_single_port(adapter,
2750 *dn_log_port_id,
2751 eth_dn);
7a291083 2752 if (adapter->port[i])
1acf2318 2753 ehea_info("%s -> logical port id #%d",
e542aa6b 2754 adapter->port[i]->netdev->name,
1acf2318 2755 *dn_log_port_id);
1211bb6d
TK		 2756 else
2757 ehea_remove_adapter_mr(adapter);
2758
1acf2318 2759 i++;
1eef4e04 2760 };
7a291083 2761
1211bb6d 2762 return 0;
1acf2318
JBT		 2763}
2764
e542aa6b
JBT		 2765static struct device_node *ehea_get_eth_dn(struct ehea_adapter *adapter,
2766 u32 logical_port_id)
1acf2318
JBT		 2767{
2768 struct device_node *lhea_dn;
2769 struct device_node *eth_dn = NULL;
9f9a3b8a 2770 const u32 *dn_log_port_id;
1acf2318
JBT		 2771
2772 lhea_dn = adapter->ebus_dev->ofdev.node;
1eef4e04 2773 while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) {
e542aa6b 2774
40cd3a45 2775 dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no",
d1d25aab 2776 NULL);
1acf2318
JBT		 2777 if (dn_log_port_id)
2778 if (*dn_log_port_id == logical_port_id)
2779 return eth_dn;
1eef4e04 2780 };
1acf2318
JBT		 2781
2782 return NULL;
2783}
2784
2785static ssize_t ehea_probe_port(struct device *dev,
2786 struct device_attribute *attr,
2787 const char *buf, size_t count)
2788{
2789 struct ehea_adapter *adapter = dev->driver_data;
2790 struct ehea_port *port;
2791 struct device_node *eth_dn = NULL;
2792 int i;
2793
2794 u32 logical_port_id;
2795
a8e34fda 2796 sscanf(buf, "%d", &logical_port_id);
1acf2318
JBT		 2797
2798 port = ehea_get_port(adapter, logical_port_id);
2799
2800 if (port) {
2801 ehea_info("adding port with logical port id=%d failed. port "
2802 "already configured as %s.", logical_port_id,
2803 port->netdev->name);
2804 return -EINVAL;
7a291083 2805 }
e542aa6b 2806
1acf2318 2807 eth_dn = ehea_get_eth_dn(adapter, logical_port_id);
7a291083 2808
1acf2318
JBT		 2809 if (!eth_dn) {
2810 ehea_info("no logical port with id %d found", logical_port_id);
2811 return -EINVAL;
2812 }
e542aa6b 2813
1211bb6d
TK		 2814 if (ehea_add_adapter_mr(adapter)) {
2815 ehea_error("creating MR failed");
2816 return -EIO;
2817 }
2818
1acf2318 2819 port = ehea_setup_single_port(adapter, logical_port_id, eth_dn);
7a291083 2820
1eef4e04
JBT		 2821 of_node_put(eth_dn);
2822
1acf2318
JBT		 2823 if (port) {
2824 for (i=0; i < EHEA_MAX_PORTS; i++)
2825 if (!adapter->port[i]) {
2826 adapter->port[i] = port;
2827 break;
2828 }
7a291083 2829
1acf2318
JBT		 2830 ehea_info("added %s (logical port id=%d)", port->netdev->name,
2831 logical_port_id);
1211bb6d
TK		 2832 } else {
2833 ehea_remove_adapter_mr(adapter);
e542aa6b 2834 return -EIO;
1211bb6d 2835 }
7a291083 2836
1acf2318
JBT		 2837 return (ssize_t) count;
2838}
2839
2840static ssize_t ehea_remove_port(struct device *dev,
2841 struct device_attribute *attr,
2842 const char *buf, size_t count)
2843{
2844 struct ehea_adapter *adapter = dev->driver_data;
2845 struct ehea_port *port;
2846 int i;
2847 u32 logical_port_id;
2848
a8e34fda 2849 sscanf(buf, "%d", &logical_port_id);
1acf2318
JBT		 2850
2851 port = ehea_get_port(adapter, logical_port_id);
2852
2853 if (port) {
2854 ehea_info("removed %s (logical port id=%d)", port->netdev->name,
2855 logical_port_id);
2856
2857 ehea_shutdown_single_port(port);
2858
2859 for (i=0; i < EHEA_MAX_PORTS; i++)
2860 if (adapter->port[i] == port) {
2861 adapter->port[i] = NULL;
2862 break;
2863 }
2864 } else {
2865 ehea_error("removing port with logical port id=%d failed. port "
2866 "not configured.", logical_port_id);
2867 return -EINVAL;
2868 }
2869
1211bb6d
TK		 2870 ehea_remove_adapter_mr(adapter);
2871
1acf2318
JBT		 2872 return (ssize_t) count;
2873}
2874
2875static DEVICE_ATTR(probe_port, S_IWUSR, NULL, ehea_probe_port);
2876static DEVICE_ATTR(remove_port, S_IWUSR, NULL, ehea_remove_port);
2877
2878int ehea_create_device_sysfs(struct ibmebus_dev *dev)
2879{
2880 int ret = device_create_file(&dev->ofdev.dev, &dev_attr_probe_port);
2881 if (ret)
2882 goto out;
2883
2884 ret = device_create_file(&dev->ofdev.dev, &dev_attr_remove_port);
2885out:
7a291083
JBT		 2886 return ret;
2887}
2888
1acf2318
JBT		 2889void ehea_remove_device_sysfs(struct ibmebus_dev *dev)
2890{
2891 device_remove_file(&dev->ofdev.dev, &dev_attr_probe_port);
2892 device_remove_file(&dev->ofdev.dev, &dev_attr_remove_port);
2893}
2894
2895static int __devinit ehea_probe_adapter(struct ibmebus_dev *dev,
2896 const struct of_device_id *id)
7a291083
JBT		 2897{
2898 struct ehea_adapter *adapter;
9f9a3b8a 2899 const u64 *adapter_handle;
7a291083
JBT		 2900 int ret;
2901
1eef4e04
JBT		 2902 if (!dev || !dev->ofdev.node) {
2903 ehea_error("Invalid ibmebus device probed");
2904 return -EINVAL;
2905 }
2906
7a291083
JBT		 2907 adapter = kzalloc(sizeof(*adapter), GFP_KERNEL);
2908 if (!adapter) {
2909 ret = -ENOMEM;
2910 dev_err(&dev->ofdev.dev, "no mem for ehea_adapter\n");
2911 goto out;
2912 }
2913
44c82152
TK		 2914 list_add(&adapter->list, &adapter_list);
2915
1acf2318
JBT		 2916 adapter->ebus_dev = dev;
2917
40cd3a45 2918 adapter_handle = of_get_property(dev->ofdev.node, "ibm,hea-handle",
d1d25aab 2919 NULL);
061bf3cd
TK		 2920 if (adapter_handle)
2921 adapter->handle = *adapter_handle;
2922
2923 if (!adapter->handle) {
7a291083
JBT		 2924 dev_err(&dev->ofdev.dev, "failed getting handle for adapter"
2925 " '%s'\n", dev->ofdev.node->full_name);
2926 ret = -ENODEV;
2927 goto out_free_ad;
2928 }
2929
7a291083
JBT		 2930 adapter->pd = EHEA_PD_ID;
2931
2932 dev->ofdev.dev.driver_data = adapter;
2933
7a291083
JBT		 2934
2935 /* initialize adapter and ports */
2936 /* get adapter properties */
2937 ret = ehea_sense_adapter_attr(adapter);
2938 if (ret) {
2939 dev_err(&dev->ofdev.dev, "sense_adapter_attr failed: %d", ret);
1211bb6d 2940 goto out_free_ad;
7a291083 2941 }
7a291083
JBT		 2942
2943 adapter->neq = ehea_create_eq(adapter,
2944 EHEA_NEQ, EHEA_MAX_ENTRIES_EQ, 1);
2945 if (!adapter->neq) {
1eef4e04 2946 ret = -EIO;
7a291083 2947 dev_err(&dev->ofdev.dev, "NEQ creation failed");
1211bb6d 2948 goto out_free_ad;
7a291083
JBT		 2949 }
2950
2951 tasklet_init(&adapter->neq_tasklet, ehea_neq_tasklet,
2952 (unsigned long)adapter);
2953
2954 ret = ibmebus_request_irq(NULL, adapter->neq->attr.ist1,
38515e90 2955 ehea_interrupt_neq, IRQF_DISABLED,
7a291083
JBT		 2956 "ehea_neq", adapter);
2957 if (ret) {
2958 dev_err(&dev->ofdev.dev, "requesting NEQ IRQ failed");
2959 goto out_kill_eq;
2960 }
2961
2962 adapter->ehea_wq = create_workqueue("ehea_wq");
1eef4e04
JBT		 2963 if (!adapter->ehea_wq) {
2964 ret = -EIO;
7a291083 2965 goto out_free_irq;
1eef4e04 2966 }
7a291083 2967
1eef4e04
JBT		 2968 ret = ehea_create_device_sysfs(dev);
2969 if (ret)
1acf2318
JBT		 2970 goto out_kill_wq;
2971
7a291083
JBT		 2972 ret = ehea_setup_ports(adapter);
2973 if (ret) {
2974 dev_err(&dev->ofdev.dev, "setup_ports failed");
1acf2318 2975 goto out_rem_dev_sysfs;
7a291083
JBT		 2976 }
2977
2978 ret = 0;
2979 goto out;
2980
1acf2318
JBT		 2981out_rem_dev_sysfs:
2982 ehea_remove_device_sysfs(dev);
2983
7a291083
JBT		 2984out_kill_wq:
2985 destroy_workqueue(adapter->ehea_wq);
2986
2987out_free_irq:
2988 ibmebus_free_irq(NULL, adapter->neq->attr.ist1, adapter);
2989
2990out_kill_eq:
2991 ehea_destroy_eq(adapter->neq);
2992
7a291083
JBT		 2993out_free_ad:
2994 kfree(adapter);
2995out:
2996 return ret;
2997}
2998
7a291083
JBT		 2999static int __devexit ehea_remove(struct ibmebus_dev *dev)
3000{
3001 struct ehea_adapter *adapter = dev->ofdev.dev.driver_data;
7a291083
JBT		 3002 int i;
3003
1acf2318 3004 for (i = 0; i < EHEA_MAX_PORTS; i++)
7a291083
JBT		 3005 if (adapter->port[i]) {
3006 ehea_shutdown_single_port(adapter->port[i]);
3007 adapter->port[i] = NULL;
3008 }
1acf2318
JBT		 3009
3010 ehea_remove_device_sysfs(dev);
3011
7a291083
JBT		 3012 destroy_workqueue(adapter->ehea_wq);
3013
3014 ibmebus_free_irq(NULL, adapter->neq->attr.ist1, adapter);
d4150a27 3015 tasklet_kill(&adapter->neq_tasklet);
7a291083
JBT		 3016
3017 ehea_destroy_eq(adapter->neq);
1211bb6d 3018 ehea_remove_adapter_mr(adapter);
44c82152
TK		 3019 list_del(&adapter->list);
3020
7a291083 3021 kfree(adapter);
44c82152 3022
7a291083
JBT		 3023 return 0;
3024}
3025
3026static int check_module_parm(void)
3027{
3028 int ret = 0;
3029
3030 if ((rq1_entries < EHEA_MIN_ENTRIES_QP) ||
3031 (rq1_entries > EHEA_MAX_ENTRIES_RQ1)) {
3032 ehea_info("Bad parameter: rq1_entries");
3033 ret = -EINVAL;
3034 }
3035 if ((rq2_entries < EHEA_MIN_ENTRIES_QP) ||
3036 (rq2_entries > EHEA_MAX_ENTRIES_RQ2)) {
3037 ehea_info("Bad parameter: rq2_entries");
3038 ret = -EINVAL;
3039 }
3040 if ((rq3_entries < EHEA_MIN_ENTRIES_QP) ||
3041 (rq3_entries > EHEA_MAX_ENTRIES_RQ3)) {
3042 ehea_info("Bad parameter: rq3_entries");
3043 ret = -EINVAL;
3044 }
3045 if ((sq_entries < EHEA_MIN_ENTRIES_QP) ||
3046 (sq_entries > EHEA_MAX_ENTRIES_SQ)) {
3047 ehea_info("Bad parameter: sq_entries");
3048 ret = -EINVAL;
3049 }
3050
3051 return ret;
3052}
3053
4c3ca4da
JBT		 3054static ssize_t ehea_show_capabilities(struct device_driver *drv,
3055 char *buf)
3056{
3057 return sprintf(buf, "%d", EHEA_CAPABILITIES);
3058}
3059
3060static DRIVER_ATTR(capabilities, S_IRUSR | S_IRGRP | S_IROTH,
3061 ehea_show_capabilities, NULL);
3062
7a291083
JBT		 3063int __init ehea_module_init(void)
3064{
3065 int ret;
3066
3067 printk(KERN_INFO "IBM eHEA ethernet device driver (Release %s)\n",
3068 DRV_VERSION);
3069
44c82152
TK		 3070 ehea_driver_wq = create_workqueue("ehea_driver_wq");
3071
3072 INIT_WORK(&ehea_rereg_mr_task, ehea_rereg_mrs);
3073
7a291083
JBT		 3074 ret = check_module_parm();
3075 if (ret)
3076 goto out;
44c82152
TK		 3077
3078 ret = ehea_create_busmap();
3079 if (ret)
3080 goto out;
3081
7a291083 3082 ret = ibmebus_register_driver(&ehea_driver);
4c3ca4da 3083 if (ret) {
7a291083 3084 ehea_error("failed registering eHEA device driver on ebus");
4c3ca4da
JBT		 3085 goto out;
3086 }
3087
3088 ret = driver_create_file(&ehea_driver.driver,
3089 &driver_attr_capabilities);
3090 if (ret) {
3091 ehea_error("failed to register capabilities attribute, ret=%d",
3092 ret);
3093 ibmebus_unregister_driver(&ehea_driver);
3094 goto out;
3095 }
7a291083
JBT		 3096
3097out:
3098 return ret;
3099}
3100
3101static void __exit ehea_module_exit(void)
3102{
f46f6ba9 3103 destroy_workqueue(ehea_driver_wq);
4c3ca4da 3104 driver_remove_file(&ehea_driver.driver, &driver_attr_capabilities);
7a291083 3105 ibmebus_unregister_driver(&ehea_driver);
44c82152 3106 ehea_destroy_busmap();
7a291083
JBT		 3107}
3108
3109module_init(ehea_module_init);
3110module_exit(ehea_module_exit);
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