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[NET]: Nuke SET_MODULE_OWNER macro.
[linux-2.6-block.git] / drivers / net / ehea / ehea_main.c
CommitLineData
7a291083
JBT		 1/*
2 * linux/drivers/net/ehea/ehea_main.c
3 *
4 * eHEA ethernet device driver for IBM eServer System p
5 *
6 * (C) Copyright IBM Corp. 2006
7 *
8 * Authors:
9 * Christoph Raisch <raisch@de.ibm.com>
10 * Jan-Bernd Themann <themann@de.ibm.com>
11 * Thomas Klein <tklein@de.ibm.com>
12 *
13 *
14 * This program is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License as published by
16 * the Free Software Foundation; either version 2, or (at your option)
17 * any later version.
18 *
19 * This program is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU General Public License for more details.
23 *
24 * You should have received a copy of the GNU General Public License
25 * along with this program; if not, write to the Free Software
26 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
27 */
28
29#include <linux/in.h>
30#include <linux/ip.h>
31#include <linux/tcp.h>
32#include <linux/udp.h>
33#include <linux/if.h>
34#include <linux/list.h>
35#include <linux/if_ether.h>
36#include <net/ip.h>
37
38#include "ehea.h"
39#include "ehea_qmr.h"
40#include "ehea_phyp.h"
41
42
43MODULE_LICENSE("GPL");
44MODULE_AUTHOR("Christoph Raisch <raisch@de.ibm.com>");
45MODULE_DESCRIPTION("IBM eServer HEA Driver");
46MODULE_VERSION(DRV_VERSION);
47
48
49static int msg_level = -1;
50static int rq1_entries = EHEA_DEF_ENTRIES_RQ1;
51static int rq2_entries = EHEA_DEF_ENTRIES_RQ2;
52static int rq3_entries = EHEA_DEF_ENTRIES_RQ3;
53static int sq_entries = EHEA_DEF_ENTRIES_SQ;
18604c54 54static int use_mcs = 0;
d4dc4ec9
JBT		 55static int use_lro = 0;
56static int lro_max_aggr = EHEA_LRO_MAX_AGGR;
18604c54 57static int num_tx_qps = EHEA_NUM_TX_QP;
8759cf76 58static int prop_carrier_state = 0;
7a291083
JBT		 59
60module_param(msg_level, int, 0);
61module_param(rq1_entries, int, 0);
62module_param(rq2_entries, int, 0);
63module_param(rq3_entries, int, 0);
64module_param(sq_entries, int, 0);
8759cf76 65module_param(prop_carrier_state, int, 0);
18604c54 66module_param(use_mcs, int, 0);
d4dc4ec9
JBT		 67module_param(use_lro, int, 0);
68module_param(lro_max_aggr, int, 0);
18604c54 69module_param(num_tx_qps, int, 0);
7a291083 70
18604c54 71MODULE_PARM_DESC(num_tx_qps, "Number of TX-QPS");
7a291083 72MODULE_PARM_DESC(msg_level, "msg_level");
8759cf76
JBT		 73MODULE_PARM_DESC(prop_carrier_state, "Propagate carrier state of physical "
74 "port to stack. 1:yes, 0:no. Default = 0 ");
7a291083
JBT		 75MODULE_PARM_DESC(rq3_entries, "Number of entries for Receive Queue 3 "
76 "[2^x - 1], x = [6..14]. Default = "
77 __MODULE_STRING(EHEA_DEF_ENTRIES_RQ3) ")");
78MODULE_PARM_DESC(rq2_entries, "Number of entries for Receive Queue 2 "
79 "[2^x - 1], x = [6..14]. Default = "
80 __MODULE_STRING(EHEA_DEF_ENTRIES_RQ2) ")");
81MODULE_PARM_DESC(rq1_entries, "Number of entries for Receive Queue 1 "
82 "[2^x - 1], x = [6..14]. Default = "
83 __MODULE_STRING(EHEA_DEF_ENTRIES_RQ1) ")");
84MODULE_PARM_DESC(sq_entries, " Number of entries for the Send Queue "
85 "[2^x - 1], x = [6..14]. Default = "
86 __MODULE_STRING(EHEA_DEF_ENTRIES_SQ) ")");
18072a5b 87MODULE_PARM_DESC(use_mcs, " 0:NAPI, 1:Multiple receive queues, Default = 0 ");
7a291083 88
d4dc4ec9
JBT		 89MODULE_PARM_DESC(lro_max_aggr, " LRO: Max packets to be aggregated. Default = "
90 __MODULE_STRING(EHEA_LRO_MAX_AGGR));
91MODULE_PARM_DESC(use_lro, " Large Receive Offload, 1: enable, 0: disable, "
92 "Default = 0");
93
d1dea38d 94static int port_name_cnt = 0;
44c82152
TK		 95static LIST_HEAD(adapter_list);
96u64 ehea_driver_flags = 0;
97struct workqueue_struct *ehea_driver_wq;
98struct work_struct ehea_rereg_mr_task;
99
d1dea38d
TK		 100
101static int __devinit ehea_probe_adapter(struct ibmebus_dev *dev,
d1d25aab 102 const struct of_device_id *id);
d1dea38d
TK		 103
104static int __devexit ehea_remove(struct ibmebus_dev *dev);
105
106static struct of_device_id ehea_device_table[] = {
107 {
108 .name = "lhea",
109 .compatible = "IBM,lhea",
110 },
111 {},
112};
113
114static struct ibmebus_driver ehea_driver = {
115 .name = "ehea",
116 .id_table = ehea_device_table,
117 .probe = ehea_probe_adapter,
118 .remove = ehea_remove,
119};
120
7a291083
JBT		 121void ehea_dump(void *adr, int len, char *msg) {
122 int x;
123 unsigned char *deb = adr;
124 for (x = 0; x < len; x += 16) {
d2db9eea 125 printk(DRV_NAME " %s adr=%p ofs=%04x %016lx %016lx\n", msg,
7a291083
JBT		 126 deb, x, *((u64*)&deb[0]), *((u64*)&deb[8]));
127 deb += 16;
128 }
129}
130
131static struct net_device_stats *ehea_get_stats(struct net_device *dev)
132{
133 struct ehea_port *port = netdev_priv(dev);
134 struct net_device_stats *stats = &port->stats;
135 struct hcp_ehea_port_cb2 *cb2;
136 u64 hret, rx_packets;
137 int i;
138
139 memset(stats, 0, sizeof(*stats));
140
a1d261c5 141 cb2 = kzalloc(PAGE_SIZE, GFP_KERNEL);
7a291083
JBT		 142 if (!cb2) {
143 ehea_error("no mem for cb2");
144 goto out;
145 }
146
147 hret = ehea_h_query_ehea_port(port->adapter->handle,
148 port->logical_port_id,
149 H_PORT_CB2, H_PORT_CB2_ALL, cb2);
150 if (hret != H_SUCCESS) {
151 ehea_error("query_ehea_port failed");
152 goto out_herr;
153 }
154
155 if (netif_msg_hw(port))
156 ehea_dump(cb2, sizeof(*cb2), "net_device_stats");
157
158 rx_packets = 0;
159 for (i = 0; i < port->num_def_qps; i++)
160 rx_packets += port->port_res[i].rx_packets;
161
162 stats->tx_packets = cb2->txucp + cb2->txmcp + cb2->txbcp;
163 stats->multicast = cb2->rxmcp;
164 stats->rx_errors = cb2->rxuerr;
165 stats->rx_bytes = cb2->rxo;
166 stats->tx_bytes = cb2->txo;
167 stats->rx_packets = rx_packets;
168
169out_herr:
170 kfree(cb2);
171out:
172 return stats;
173}
174
175static void ehea_refill_rq1(struct ehea_port_res *pr, int index, int nr_of_wqes)
176{
177 struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
178 struct net_device *dev = pr->port->netdev;
179 int max_index_mask = pr->rq1_skba.len - 1;
180 int i;
181
182 if (!nr_of_wqes)
183 return;
184
185 for (i = 0; i < nr_of_wqes; i++) {
186 if (!skb_arr_rq1[index]) {
187 skb_arr_rq1[index] = netdev_alloc_skb(dev,
188 EHEA_L_PKT_SIZE);
189 if (!skb_arr_rq1[index]) {
190 ehea_error("%s: no mem for skb/%d wqes filled",
191 dev->name, i);
192 break;
193 }
194 }
195 index--;
196 index &= max_index_mask;
197 }
198 /* Ring doorbell */
199 ehea_update_rq1a(pr->qp, i);
200}
201
202static int ehea_init_fill_rq1(struct ehea_port_res *pr, int nr_rq1a)
203{
204 int ret = 0;
205 struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
206 struct net_device *dev = pr->port->netdev;
207 int i;
208
209 for (i = 0; i < pr->rq1_skba.len; i++) {
210 skb_arr_rq1[i] = netdev_alloc_skb(dev, EHEA_L_PKT_SIZE);
211 if (!skb_arr_rq1[i]) {
212 ehea_error("%s: no mem for skb/%d wqes filled",
213 dev->name, i);
214 ret = -ENOMEM;
215 goto out;
216 }
217 }
218 /* Ring doorbell */
219 ehea_update_rq1a(pr->qp, nr_rq1a);
220out:
221 return ret;
222}
223
224static int ehea_refill_rq_def(struct ehea_port_res *pr,
225 struct ehea_q_skb_arr *q_skba, int rq_nr,
226 int num_wqes, int wqe_type, int packet_size)
227{
228 struct net_device *dev = pr->port->netdev;
229 struct ehea_qp *qp = pr->qp;
230 struct sk_buff **skb_arr = q_skba->arr;
231 struct ehea_rwqe *rwqe;
232 int i, index, max_index_mask, fill_wqes;
233 int ret = 0;
234
235 fill_wqes = q_skba->os_skbs + num_wqes;
236
237 if (!fill_wqes)
238 return ret;
239
240 index = q_skba->index;
241 max_index_mask = q_skba->len - 1;
242 for (i = 0; i < fill_wqes; i++) {
243 struct sk_buff *skb = netdev_alloc_skb(dev, packet_size);
244 if (!skb) {
245 ehea_error("%s: no mem for skb/%d wqes filled",
18604c54 246 pr->port->netdev->name, i);
7a291083
JBT		 247 q_skba->os_skbs = fill_wqes - i;
248 ret = -ENOMEM;
249 break;
250 }
251 skb_reserve(skb, NET_IP_ALIGN);
252
253 skb_arr[index] = skb;
254
255 rwqe = ehea_get_next_rwqe(qp, rq_nr);
256 rwqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, wqe_type)
d1d25aab 257 | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, index);
7a291083 258 rwqe->sg_list[0].l_key = pr->recv_mr.lkey;
44c82152 259 rwqe->sg_list[0].vaddr = ehea_map_vaddr(skb->data);
7a291083
JBT		 260 rwqe->sg_list[0].len = packet_size;
261 rwqe->data_segments = 1;
262
263 index++;
264 index &= max_index_mask;
44c82152
TK		 265
266 if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags)))
267 goto out;
7a291083 268 }
44c82152 269
7a291083
JBT		 270 q_skba->index = index;
271
272 /* Ring doorbell */
273 iosync();
274 if (rq_nr == 2)
275 ehea_update_rq2a(pr->qp, i);
276 else
277 ehea_update_rq3a(pr->qp, i);
44c82152 278out:
7a291083
JBT		 279 return ret;
280}
281
282
283static int ehea_refill_rq2(struct ehea_port_res *pr, int nr_of_wqes)
284{
285 return ehea_refill_rq_def(pr, &pr->rq2_skba, 2,
286 nr_of_wqes, EHEA_RWQE2_TYPE,
287 EHEA_RQ2_PKT_SIZE + NET_IP_ALIGN);
288}
289
290
291static int ehea_refill_rq3(struct ehea_port_res *pr, int nr_of_wqes)
292{
293 return ehea_refill_rq_def(pr, &pr->rq3_skba, 3,
294 nr_of_wqes, EHEA_RWQE3_TYPE,
295 EHEA_MAX_PACKET_SIZE + NET_IP_ALIGN);
296}
297
298static inline int ehea_check_cqe(struct ehea_cqe *cqe, int *rq_num)
299{
300 *rq_num = (cqe->type & EHEA_CQE_TYPE_RQ) >> 5;
301 if ((cqe->status & EHEA_CQE_STAT_ERR_MASK) == 0)
302 return 0;
303 if (((cqe->status & EHEA_CQE_STAT_ERR_TCP) != 0) &&
304 (cqe->header_length == 0))
305 return 0;
306 return -EINVAL;
307}
308
309static inline void ehea_fill_skb(struct net_device *dev,
310 struct sk_buff *skb, struct ehea_cqe *cqe)
311{
312 int length = cqe->num_bytes_transfered - 4; /*remove CRC */
313
314 skb_put(skb, length);
315 skb->ip_summed = CHECKSUM_UNNECESSARY;
316 skb->protocol = eth_type_trans(skb, dev);
317}
318
319static inline struct sk_buff *get_skb_by_index(struct sk_buff **skb_array,
320 int arr_len,
321 struct ehea_cqe *cqe)
322{
323 int skb_index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, cqe->wr_id);
324 struct sk_buff *skb;
325 void *pref;
326 int x;
327
328 x = skb_index + 1;
329 x &= (arr_len - 1);
330
331 pref = skb_array[x];
332 prefetchw(pref);
333 prefetchw(pref + EHEA_CACHE_LINE);
334
335 pref = (skb_array[x]->data);
336 prefetch(pref);
337 prefetch(pref + EHEA_CACHE_LINE);
338 prefetch(pref + EHEA_CACHE_LINE * 2);
339 prefetch(pref + EHEA_CACHE_LINE * 3);
340 skb = skb_array[skb_index];
341 skb_array[skb_index] = NULL;
342 return skb;
343}
344
345static inline struct sk_buff *get_skb_by_index_ll(struct sk_buff **skb_array,
346 int arr_len, int wqe_index)
347{
348 struct sk_buff *skb;
349 void *pref;
350 int x;
351
352 x = wqe_index + 1;
353 x &= (arr_len - 1);
354
355 pref = skb_array[x];
356 prefetchw(pref);
357 prefetchw(pref + EHEA_CACHE_LINE);
358
359 pref = (skb_array[x]->data);
360 prefetchw(pref);
361 prefetchw(pref + EHEA_CACHE_LINE);
362
363 skb = skb_array[wqe_index];
364 skb_array[wqe_index] = NULL;
365 return skb;
366}
367
368static int ehea_treat_poll_error(struct ehea_port_res *pr, int rq,
369 struct ehea_cqe *cqe, int *processed_rq2,
370 int *processed_rq3)
371{
372 struct sk_buff *skb;
373
acbddb59
JBT		 374 if (cqe->status & EHEA_CQE_STAT_ERR_TCP)
375 pr->p_stats.err_tcp_cksum++;
376 if (cqe->status & EHEA_CQE_STAT_ERR_IP)
377 pr->p_stats.err_ip_cksum++;
378 if (cqe->status & EHEA_CQE_STAT_ERR_CRC)
379 pr->p_stats.err_frame_crc++;
380
7a291083
JBT		 381 if (netif_msg_rx_err(pr->port)) {
382 ehea_error("CQE Error for QP %d", pr->qp->init_attr.qp_nr);
383 ehea_dump(cqe, sizeof(*cqe), "CQE");
384 }
385
386 if (rq == 2) {
387 *processed_rq2 += 1;
388 skb = get_skb_by_index(pr->rq2_skba.arr, pr->rq2_skba.len, cqe);
389 dev_kfree_skb(skb);
390 } else if (rq == 3) {
391 *processed_rq3 += 1;
392 skb = get_skb_by_index(pr->rq3_skba.arr, pr->rq3_skba.len, cqe);
393 dev_kfree_skb(skb);
394 }
395
396 if (cqe->status & EHEA_CQE_STAT_FAT_ERR_MASK) {
397 ehea_error("Critical receive error. Resetting port.");
398 queue_work(pr->port->adapter->ehea_wq, &pr->port->reset_task);
399 return 1;
400 }
401
402 return 0;
403}
404
d4dc4ec9
JBT		 405static int get_skb_hdr(struct sk_buff *skb, void **iphdr,
406 void **tcph, u64 *hdr_flags, void *priv)
407{
408 struct ehea_cqe *cqe = priv;
409 unsigned int ip_len;
410 struct iphdr *iph;
411
412 /* non tcp/udp packets */
413 if (!cqe->header_length)
414 return -1;
415
416 /* non tcp packet */
417 skb_reset_network_header(skb);
418 iph = ip_hdr(skb);
419 if (iph->protocol != IPPROTO_TCP)
420 return -1;
421
422 ip_len = ip_hdrlen(skb);
423 skb_set_transport_header(skb, ip_len);
424 *tcph = tcp_hdr(skb);
425
426 /* check if ip header and tcp header are complete */
427 if (iph->tot_len < ip_len + tcp_hdrlen(skb))
428 return -1;
429
430 *hdr_flags = LRO_IPV4 | LRO_TCP;
431 *iphdr = iph;
432
433 return 0;
434}
435
436static void ehea_proc_skb(struct ehea_port_res *pr, struct ehea_cqe *cqe,
437 struct sk_buff *skb)
438{
439 int vlan_extracted = (cqe->status & EHEA_CQE_VLAN_TAG_XTRACT)
440 && pr->port->vgrp;
441
442 if (use_lro) {
443 if (vlan_extracted)
444 lro_vlan_hwaccel_receive_skb(&pr->lro_mgr, skb,
445 pr->port->vgrp,
446 cqe->vlan_tag,
447 cqe);
448 else
449 lro_receive_skb(&pr->lro_mgr, skb, cqe);
450 } else {
451 if (vlan_extracted)
452 vlan_hwaccel_receive_skb(skb, pr->port->vgrp,
453 cqe->vlan_tag);
454 else
455 netif_receive_skb(skb);
456 }
457}
458
bea3348e
SH		 459static int ehea_proc_rwqes(struct net_device *dev,
460 struct ehea_port_res *pr,
461 int budget)
7a291083 462{
18604c54 463 struct ehea_port *port = pr->port;
7a291083
JBT		 464 struct ehea_qp *qp = pr->qp;
465 struct ehea_cqe *cqe;
466 struct sk_buff *skb;
467 struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
468 struct sk_buff **skb_arr_rq2 = pr->rq2_skba.arr;
469 struct sk_buff **skb_arr_rq3 = pr->rq3_skba.arr;
470 int skb_arr_rq1_len = pr->rq1_skba.len;
471 int skb_arr_rq2_len = pr->rq2_skba.len;
472 int skb_arr_rq3_len = pr->rq3_skba.len;
473 int processed, processed_rq1, processed_rq2, processed_rq3;
bea3348e 474 int wqe_index, last_wqe_index, rq, port_reset;
7a291083
JBT		 475
476 processed = processed_rq1 = processed_rq2 = processed_rq3 = 0;
477 last_wqe_index = 0;
7a291083 478
7a291083 479 cqe = ehea_poll_rq1(qp, &wqe_index);
bea3348e 480 while ((processed < budget) && cqe) {
7a291083
JBT		 481 ehea_inc_rq1(qp);
482 processed_rq1++;
483 processed++;
7a291083
JBT		 484 if (netif_msg_rx_status(port))
485 ehea_dump(cqe, sizeof(*cqe), "CQE");
486
487 last_wqe_index = wqe_index;
488 rmb();
489 if (!ehea_check_cqe(cqe, &rq)) {
490 if (rq == 1) { /* LL RQ1 */
491 skb = get_skb_by_index_ll(skb_arr_rq1,
492 skb_arr_rq1_len,
493 wqe_index);
494 if (unlikely(!skb)) {
495 if (netif_msg_rx_err(port))
496 ehea_error("LL rq1: skb=NULL");
18604c54 497
bea3348e 498 skb = netdev_alloc_skb(dev,
7a291083
JBT		 499 EHEA_L_PKT_SIZE);
500 if (!skb)
501 break;
502 }
27d7ff46 503 skb_copy_to_linear_data(skb, ((char*)cqe) + 64,
d1d25aab 504 cqe->num_bytes_transfered - 4);
bea3348e 505 ehea_fill_skb(dev, skb, cqe);
7a291083
JBT		 506 } else if (rq == 2) { /* RQ2 */
507 skb = get_skb_by_index(skb_arr_rq2,
508 skb_arr_rq2_len, cqe);
509 if (unlikely(!skb)) {
510 if (netif_msg_rx_err(port))
511 ehea_error("rq2: skb=NULL");
512 break;
513 }
bea3348e 514 ehea_fill_skb(dev, skb, cqe);
7a291083
JBT		 515 processed_rq2++;
516 } else { /* RQ3 */
517 skb = get_skb_by_index(skb_arr_rq3,
518 skb_arr_rq3_len, cqe);
519 if (unlikely(!skb)) {
520 if (netif_msg_rx_err(port))
521 ehea_error("rq3: skb=NULL");
522 break;
523 }
bea3348e 524 ehea_fill_skb(dev, skb, cqe);
7a291083
JBT		 525 processed_rq3++;
526 }
527
d4dc4ec9 528 ehea_proc_skb(pr, cqe, skb);
bea3348e 529 dev->last_rx = jiffies;
18604c54 530 } else {
acbddb59 531 pr->p_stats.poll_receive_errors++;
7a291083
JBT		 532 port_reset = ehea_treat_poll_error(pr, rq, cqe,
533 &processed_rq2,
534 &processed_rq3);
535 if (port_reset)
536 break;
537 }
538 cqe = ehea_poll_rq1(qp, &wqe_index);
539 }
d4dc4ec9
JBT		 540 if (use_lro)
541 lro_flush_all(&pr->lro_mgr);
7a291083 542
7a291083
JBT		 543 pr->rx_packets += processed;
544
545 ehea_refill_rq1(pr, last_wqe_index, processed_rq1);
546 ehea_refill_rq2(pr, processed_rq2);
547 ehea_refill_rq3(pr, processed_rq3);
548
bea3348e 549 return processed;
7a291083
JBT		 550}
551
18604c54 552static struct ehea_cqe *ehea_proc_cqes(struct ehea_port_res *pr, int my_quota)
7a291083 553{
acbddb59 554 struct sk_buff *skb;
7a291083
JBT		 555 struct ehea_cq *send_cq = pr->send_cq;
556 struct ehea_cqe *cqe;
18604c54 557 int quota = my_quota;
7a291083
JBT		 558 int cqe_counter = 0;
559 int swqe_av = 0;
acbddb59 560 int index;
7a291083
JBT		 561 unsigned long flags;
562
18604c54
JBT		 563 cqe = ehea_poll_cq(send_cq);
564 while(cqe && (quota > 0)) {
565 ehea_inc_cq(send_cq);
566
7a291083
JBT		 567 cqe_counter++;
568 rmb();
569 if (cqe->status & EHEA_CQE_STAT_ERR_MASK) {
570 ehea_error("Send Completion Error: Resetting port");
571 if (netif_msg_tx_err(pr->port))
572 ehea_dump(cqe, sizeof(*cqe), "Send CQE");
573 queue_work(pr->port->adapter->ehea_wq,
574 &pr->port->reset_task);
575 break;
576 }
577
578 if (netif_msg_tx_done(pr->port))
579 ehea_dump(cqe, sizeof(*cqe), "CQE");
580
581 if (likely(EHEA_BMASK_GET(EHEA_WR_ID_TYPE, cqe->wr_id)
acbddb59
JBT		 582 == EHEA_SWQE2_TYPE)) {
583
584 index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, cqe->wr_id);
585 skb = pr->sq_skba.arr[index];
586 dev_kfree_skb(skb);
587 pr->sq_skba.arr[index] = NULL;
588 }
7a291083
JBT		 589
590 swqe_av += EHEA_BMASK_GET(EHEA_WR_ID_REFILL, cqe->wr_id);
591 quota--;
18604c54
JBT		 592
593 cqe = ehea_poll_cq(send_cq);
594 };
7a291083
JBT		 595
596 ehea_update_feca(send_cq, cqe_counter);
597 atomic_add(swqe_av, &pr->swqe_avail);
598
599 spin_lock_irqsave(&pr->netif_queue, flags);
18604c54 600
7a291083
JBT		 601 if (pr->queue_stopped && (atomic_read(&pr->swqe_avail)
602 >= pr->swqe_refill_th)) {
603 netif_wake_queue(pr->port->netdev);
604 pr->queue_stopped = 0;
605 }
606 spin_unlock_irqrestore(&pr->netif_queue, flags);
607
18604c54 608 return cqe;
7a291083
JBT		 609}
610
18604c54 611#define EHEA_NAPI_POLL_NUM_BEFORE_IRQ 16
bea3348e 612#define EHEA_POLL_MAX_CQES 65535
18604c54 613
bea3348e 614static int ehea_poll(struct napi_struct *napi, int budget)
7a291083 615{
bea3348e
SH		 616 struct ehea_port_res *pr = container_of(napi, struct ehea_port_res, napi);
617 struct net_device *dev = pr->port->netdev;
18604c54
JBT		 618 struct ehea_cqe *cqe;
619 struct ehea_cqe *cqe_skb = NULL;
620 int force_irq, wqe_index;
bea3348e 621 int rx = 0;
18604c54
JBT		 622
623 force_irq = (pr->poll_counter > EHEA_NAPI_POLL_NUM_BEFORE_IRQ);
bea3348e
SH		 624 cqe_skb = ehea_proc_cqes(pr, EHEA_POLL_MAX_CQES);
625
626 if (!force_irq)
627 rx += ehea_proc_rwqes(dev, pr, budget - rx);
18604c54 628
bea3348e 629 while ((rx != budget) || force_irq) {
18604c54 630 pr->poll_counter = 0;
bea3348e
SH		 631 force_irq = 0;
632 netif_rx_complete(dev, napi);
18604c54
JBT		 633 ehea_reset_cq_ep(pr->recv_cq);
634 ehea_reset_cq_ep(pr->send_cq);
635 ehea_reset_cq_n1(pr->recv_cq);
636 ehea_reset_cq_n1(pr->send_cq);
637 cqe = ehea_poll_rq1(pr->qp, &wqe_index);
638 cqe_skb = ehea_poll_cq(pr->send_cq);
639
e542aa6b 640 if (!cqe && !cqe_skb)
bea3348e 641 return rx;
18604c54 642
bea3348e
SH		 643 if (!netif_rx_reschedule(dev, napi))
644 return rx;
18604c54 645
bea3348e
SH		 646 cqe_skb = ehea_proc_cqes(pr, EHEA_POLL_MAX_CQES);
647 rx += ehea_proc_rwqes(dev, pr, budget - rx);
648 }
e542aa6b 649
bea3348e
SH		 650 pr->poll_counter++;
651 return rx;
7a291083
JBT		 652}
653
8d22c971
JBT		 654#ifdef CONFIG_NET_POLL_CONTROLLER
655static void ehea_netpoll(struct net_device *dev)
656{
657 struct ehea_port *port = netdev_priv(dev);
bea3348e 658 int i;
8d22c971 659
bea3348e
SH		 660 for (i = 0; i < port->num_def_qps; i++)
661 netif_rx_schedule(dev, &port->port_res[i].napi);
8d22c971
JBT		 662}
663#endif
664
7d12e780 665static irqreturn_t ehea_recv_irq_handler(int irq, void *param)
7a291083
JBT		 666{
667 struct ehea_port_res *pr = param;
18604c54 668
bea3348e 669 netif_rx_schedule(pr->port->netdev, &pr->napi);
18604c54 670
7a291083
JBT		 671 return IRQ_HANDLED;
672}
673
7d12e780 674static irqreturn_t ehea_qp_aff_irq_handler(int irq, void *param)
7a291083
JBT		 675{
676 struct ehea_port *port = param;
677 struct ehea_eqe *eqe;
d2db9eea 678 struct ehea_qp *qp;
7a291083
JBT		 679 u32 qp_token;
680
681 eqe = ehea_poll_eq(port->qp_eq);
bb3a6449 682
7a291083 683 while (eqe) {
7a291083 684 qp_token = EHEA_BMASK_GET(EHEA_EQE_QP_TOKEN, eqe->entry);
bb3a6449
TK		 685 ehea_error("QP aff_err: entry=0x%lx, token=0x%x",
686 eqe->entry, qp_token);
d2db9eea
JBT		 687
688 qp = port->port_res[qp_token].qp;
689 ehea_error_data(port->adapter, qp->fw_handle);
bb3a6449 690 eqe = ehea_poll_eq(port->qp_eq);
7a291083
JBT		 691 }
692
d2db9eea
JBT		 693 queue_work(port->adapter->ehea_wq, &port->reset_task);
694
7a291083
JBT		 695 return IRQ_HANDLED;
696}
697
698static struct ehea_port *ehea_get_port(struct ehea_adapter *adapter,
699 int logical_port)
700{
701 int i;
702
1acf2318 703 for (i = 0; i < EHEA_MAX_PORTS; i++)
41b69c70 704 if (adapter->port[i])
d1d25aab 705 if (adapter->port[i]->logical_port_id == logical_port)
41b69c70 706 return adapter->port[i];
7a291083
JBT		 707 return NULL;
708}
709
710int ehea_sense_port_attr(struct ehea_port *port)
711{
712 int ret;
713 u64 hret;
714 struct hcp_ehea_port_cb0 *cb0;
715
a1d261c5
TK		 716 cb0 = kzalloc(PAGE_SIZE, GFP_ATOMIC); /* May be called via */
717 if (!cb0) { /* ehea_neq_tasklet() */
7a291083
JBT		 718 ehea_error("no mem for cb0");
719 ret = -ENOMEM;
720 goto out;
721 }
722
723 hret = ehea_h_query_ehea_port(port->adapter->handle,
724 port->logical_port_id, H_PORT_CB0,
725 EHEA_BMASK_SET(H_PORT_CB0_ALL, 0xFFFF),
726 cb0);
727 if (hret != H_SUCCESS) {
728 ret = -EIO;
729 goto out_free;
730 }
731
732 /* MAC address */
733 port->mac_addr = cb0->port_mac_addr << 16;
734
735 if (!is_valid_ether_addr((u8*)&port->mac_addr)) {
736 ret = -EADDRNOTAVAIL;
737 goto out_free;
738 }
739
740 /* Port speed */
741 switch (cb0->port_speed) {
742 case H_SPEED_10M_H:
743 port->port_speed = EHEA_SPEED_10M;
744 port->full_duplex = 0;
745 break;
746 case H_SPEED_10M_F:
747 port->port_speed = EHEA_SPEED_10M;
748 port->full_duplex = 1;
749 break;
750 case H_SPEED_100M_H:
751 port->port_speed = EHEA_SPEED_100M;
752 port->full_duplex = 0;
753 break;
754 case H_SPEED_100M_F:
755 port->port_speed = EHEA_SPEED_100M;
756 port->full_duplex = 1;
757 break;
758 case H_SPEED_1G_F:
759 port->port_speed = EHEA_SPEED_1G;
760 port->full_duplex = 1;
761 break;
762 case H_SPEED_10G_F:
763 port->port_speed = EHEA_SPEED_10G;
764 port->full_duplex = 1;
765 break;
766 default:
767 port->port_speed = 0;
768 port->full_duplex = 0;
769 break;
770 }
771
e919b593 772 port->autoneg = 1;
18604c54 773 port->num_mcs = cb0->num_default_qps;
e919b593 774
7a291083 775 /* Number of default QPs */
18604c54
JBT		 776 if (use_mcs)
777 port->num_def_qps = cb0->num_default_qps;
778 else
779 port->num_def_qps = 1;
7a291083
JBT		 780
781 if (!port->num_def_qps) {
782 ret = -EINVAL;
783 goto out_free;
784 }
785
18604c54
JBT		 786 port->num_tx_qps = num_tx_qps;
787
788 if (port->num_def_qps >= port->num_tx_qps)
7a291083
JBT		 789 port->num_add_tx_qps = 0;
790 else
18604c54 791 port->num_add_tx_qps = port->num_tx_qps - port->num_def_qps;
7a291083
JBT		 792
793 ret = 0;
794out_free:
795 if (ret || netif_msg_probe(port))
796 ehea_dump(cb0, sizeof(*cb0), "ehea_sense_port_attr");
797 kfree(cb0);
798out:
799 return ret;
800}
801
802int ehea_set_portspeed(struct ehea_port *port, u32 port_speed)
803{
804 struct hcp_ehea_port_cb4 *cb4;
805 u64 hret;
806 int ret = 0;
807
a1d261c5 808 cb4 = kzalloc(PAGE_SIZE, GFP_KERNEL);
7a291083
JBT		 809 if (!cb4) {
810 ehea_error("no mem for cb4");
811 ret = -ENOMEM;
812 goto out;
813 }
814
815 cb4->port_speed = port_speed;
816
817 netif_carrier_off(port->netdev);
818
819 hret = ehea_h_modify_ehea_port(port->adapter->handle,
820 port->logical_port_id,
821 H_PORT_CB4, H_PORT_CB4_SPEED, cb4);
822 if (hret == H_SUCCESS) {
823 port->autoneg = port_speed == EHEA_SPEED_AUTONEG ? 1 : 0;
824
825 hret = ehea_h_query_ehea_port(port->adapter->handle,
826 port->logical_port_id,
827 H_PORT_CB4, H_PORT_CB4_SPEED,
828 cb4);
829 if (hret == H_SUCCESS) {
830 switch (cb4->port_speed) {
831 case H_SPEED_10M_H:
832 port->port_speed = EHEA_SPEED_10M;
833 port->full_duplex = 0;
834 break;
835 case H_SPEED_10M_F:
836 port->port_speed = EHEA_SPEED_10M;
837 port->full_duplex = 1;
838 break;
839 case H_SPEED_100M_H:
840 port->port_speed = EHEA_SPEED_100M;
841 port->full_duplex = 0;
842 break;
843 case H_SPEED_100M_F:
844 port->port_speed = EHEA_SPEED_100M;
845 port->full_duplex = 1;
846 break;
847 case H_SPEED_1G_F:
848 port->port_speed = EHEA_SPEED_1G;
849 port->full_duplex = 1;
850 break;
851 case H_SPEED_10G_F:
852 port->port_speed = EHEA_SPEED_10G;
853 port->full_duplex = 1;
854 break;
855 default:
856 port->port_speed = 0;
857 port->full_duplex = 0;
858 break;
859 }
860 } else {
861 ehea_error("Failed sensing port speed");
862 ret = -EIO;
863 }
864 } else {
865 if (hret == H_AUTHORITY) {
7674a588 866 ehea_info("Hypervisor denied setting port speed");
7a291083
JBT		 867 ret = -EPERM;
868 } else {
869 ret = -EIO;
870 ehea_error("Failed setting port speed");
871 }
872 }
8759cf76
JBT		 873 if (!prop_carrier_state || (port->phy_link == EHEA_PHY_LINK_UP))
874 netif_carrier_on(port->netdev);
875
7a291083
JBT		 876 kfree(cb4);
877out:
878 return ret;
879}
880
881static void ehea_parse_eqe(struct ehea_adapter *adapter, u64 eqe)
882{
883 int ret;
884 u8 ec;
885 u8 portnum;
886 struct ehea_port *port;
887
888 ec = EHEA_BMASK_GET(NEQE_EVENT_CODE, eqe);
889 portnum = EHEA_BMASK_GET(NEQE_PORTNUM, eqe);
890 port = ehea_get_port(adapter, portnum);
891
892 switch (ec) {
893 case EHEA_EC_PORTSTATE_CHG: /* port state change */
894
895 if (!port) {
896 ehea_error("unknown portnum %x", portnum);
897 break;
898 }
899
900 if (EHEA_BMASK_GET(NEQE_PORT_UP, eqe)) {
901 if (!netif_carrier_ok(port->netdev)) {
1e1675cc 902 ret = ehea_sense_port_attr(port);
7a291083
JBT		 903 if (ret) {
904 ehea_error("failed resensing port "
905 "attributes");
906 break;
907 }
908
909 if (netif_msg_link(port))
910 ehea_info("%s: Logical port up: %dMbps "
911 "%s Duplex",
912 port->netdev->name,
913 port->port_speed,
914 port->full_duplex ==
915 1 ? "Full" : "Half");
916
917 netif_carrier_on(port->netdev);
918 netif_wake_queue(port->netdev);
919 }
920 } else
921 if (netif_carrier_ok(port->netdev)) {
922 if (netif_msg_link(port))
923 ehea_info("%s: Logical port down",
924 port->netdev->name);
925 netif_carrier_off(port->netdev);
926 netif_stop_queue(port->netdev);
927 }
928
929 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PORT_UP, eqe)) {
8759cf76 930 port->phy_link = EHEA_PHY_LINK_UP;
7a291083
JBT		 931 if (netif_msg_link(port))
932 ehea_info("%s: Physical port up",
933 port->netdev->name);
8759cf76
JBT		 934 if (prop_carrier_state)
935 netif_carrier_on(port->netdev);
7a291083 936 } else {
8759cf76 937 port->phy_link = EHEA_PHY_LINK_DOWN;
7a291083
JBT		 938 if (netif_msg_link(port))
939 ehea_info("%s: Physical port down",
940 port->netdev->name);
8759cf76
JBT		 941 if (prop_carrier_state)
942 netif_carrier_off(port->netdev);
7a291083
JBT		 943 }
944
945 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PRIMARY, eqe))
946 ehea_info("External switch port is primary port");
947 else
948 ehea_info("External switch port is backup port");
949
950 break;
951 case EHEA_EC_ADAPTER_MALFUNC:
952 ehea_error("Adapter malfunction");
953 break;
954 case EHEA_EC_PORT_MALFUNC:
955 ehea_info("Port malfunction: Device: %s", port->netdev->name);
956 netif_carrier_off(port->netdev);
957 netif_stop_queue(port->netdev);
958 break;
959 default:
bff0a55f 960 ehea_error("unknown event code %x, eqe=0x%lX", ec, eqe);
7a291083
JBT		 961 break;
962 }
963}
964
965static void ehea_neq_tasklet(unsigned long data)
966{
967 struct ehea_adapter *adapter = (struct ehea_adapter*)data;
968 struct ehea_eqe *eqe;
969 u64 event_mask;
970
971 eqe = ehea_poll_eq(adapter->neq);
972 ehea_debug("eqe=%p", eqe);
973
974 while (eqe) {
975 ehea_debug("*eqe=%lx", eqe->entry);
976 ehea_parse_eqe(adapter, eqe->entry);
977 eqe = ehea_poll_eq(adapter->neq);
978 ehea_debug("next eqe=%p", eqe);
979 }
980
981 event_mask = EHEA_BMASK_SET(NELR_PORTSTATE_CHG, 1)
982 | EHEA_BMASK_SET(NELR_ADAPTER_MALFUNC, 1)
983 | EHEA_BMASK_SET(NELR_PORT_MALFUNC, 1);
984
985 ehea_h_reset_events(adapter->handle,
986 adapter->neq->fw_handle, event_mask);
987}
988
7d12e780 989static irqreturn_t ehea_interrupt_neq(int irq, void *param)
7a291083
JBT		 990{
991 struct ehea_adapter *adapter = param;
992 tasklet_hi_schedule(&adapter->neq_tasklet);
993 return IRQ_HANDLED;
994}
995
996
997static int ehea_fill_port_res(struct ehea_port_res *pr)
998{
999 int ret;
1000 struct ehea_qp_init_attr *init_attr = &pr->qp->init_attr;
1001
1002 ret = ehea_init_fill_rq1(pr, init_attr->act_nr_rwqes_rq1
1003 - init_attr->act_nr_rwqes_rq2
1004 - init_attr->act_nr_rwqes_rq3 - 1);
1005
1006 ret |= ehea_refill_rq2(pr, init_attr->act_nr_rwqes_rq2 - 1);
1007
1008 ret |= ehea_refill_rq3(pr, init_attr->act_nr_rwqes_rq3 - 1);
1009
1010 return ret;
1011}
1012
1013static int ehea_reg_interrupts(struct net_device *dev)
1014{
1015 struct ehea_port *port = netdev_priv(dev);
1016 struct ehea_port_res *pr;
1017 int i, ret;
1018
7a291083
JBT		 1019
1020 snprintf(port->int_aff_name, EHEA_IRQ_NAME_SIZE - 1, "%s-aff",
1021 dev->name);
1022
1023 ret = ibmebus_request_irq(NULL, port->qp_eq->attr.ist1,
1024 ehea_qp_aff_irq_handler,
38515e90 1025 IRQF_DISABLED, port->int_aff_name, port);
7a291083
JBT		 1026 if (ret) {
1027 ehea_error("failed registering irq for qp_aff_irq_handler:"
1028 "ist=%X", port->qp_eq->attr.ist1);
1029 goto out_free_qpeq;
1030 }
1031
1032 if (netif_msg_ifup(port))
1033 ehea_info("irq_handle 0x%X for function qp_aff_irq_handler "
1034 "registered", port->qp_eq->attr.ist1);
1035
18604c54 1036
7a291083
JBT		 1037 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
1038 pr = &port->port_res[i];
1039 snprintf(pr->int_send_name, EHEA_IRQ_NAME_SIZE - 1,
18604c54
JBT		 1040 "%s-queue%d", dev->name, i);
1041 ret = ibmebus_request_irq(NULL, pr->eq->attr.ist1,
1042 ehea_recv_irq_handler,
38515e90 1043 IRQF_DISABLED, pr->int_send_name,
7a291083
JBT		 1044 pr);
1045 if (ret) {
18604c54 1046 ehea_error("failed registering irq for ehea_queue "
7a291083 1047 "port_res_nr:%d, ist=%X", i,
18604c54 1048 pr->eq->attr.ist1);
7a291083
JBT		 1049 goto out_free_req;
1050 }
1051 if (netif_msg_ifup(port))
18604c54
JBT		 1052 ehea_info("irq_handle 0x%X for function ehea_queue_int "
1053 "%d registered", pr->eq->attr.ist1, i);
7a291083
JBT		 1054 }
1055out:
1056 return ret;
1057
18604c54 1058
7a291083
JBT		 1059out_free_req:
1060 while (--i >= 0) {
18604c54 1061 u32 ist = port->port_res[i].eq->attr.ist1;
7a291083
JBT		 1062 ibmebus_free_irq(NULL, ist, &port->port_res[i]);
1063 }
18604c54 1064
7a291083
JBT		 1065out_free_qpeq:
1066 ibmebus_free_irq(NULL, port->qp_eq->attr.ist1, port);
1067 i = port->num_def_qps;
18604c54 1068
7a291083 1069 goto out;
18604c54 1070
7a291083
JBT		 1071}
1072
1073static void ehea_free_interrupts(struct net_device *dev)
1074{
1075 struct ehea_port *port = netdev_priv(dev);
1076 struct ehea_port_res *pr;
1077 int i;
1078
1079 /* send */
18604c54 1080
7a291083
JBT		 1081 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
1082 pr = &port->port_res[i];
18604c54 1083 ibmebus_free_irq(NULL, pr->eq->attr.ist1, pr);
7a291083
JBT		 1084 if (netif_msg_intr(port))
1085 ehea_info("free send irq for res %d with handle 0x%X",
18604c54 1086 i, pr->eq->attr.ist1);
7a291083
JBT		 1087 }
1088
1089 /* associated events */
1090 ibmebus_free_irq(NULL, port->qp_eq->attr.ist1, port);
1091 if (netif_msg_intr(port))
1092 ehea_info("associated event interrupt for handle 0x%X freed",
1093 port->qp_eq->attr.ist1);
1094}
1095
1096static int ehea_configure_port(struct ehea_port *port)
1097{
1098 int ret, i;
1099 u64 hret, mask;
1100 struct hcp_ehea_port_cb0 *cb0;
1101
1102 ret = -ENOMEM;
a1d261c5 1103 cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL);
7a291083
JBT		 1104 if (!cb0)
1105 goto out;
1106
1107 cb0->port_rc = EHEA_BMASK_SET(PXLY_RC_VALID, 1)
1108 | EHEA_BMASK_SET(PXLY_RC_IP_CHKSUM, 1)
1109 | EHEA_BMASK_SET(PXLY_RC_TCP_UDP_CHKSUM, 1)
1110 | EHEA_BMASK_SET(PXLY_RC_VLAN_XTRACT, 1)
1111 | EHEA_BMASK_SET(PXLY_RC_VLAN_TAG_FILTER,
1112 PXLY_RC_VLAN_FILTER)
1113 | EHEA_BMASK_SET(PXLY_RC_JUMBO_FRAME, 1);
1114
18604c54
JBT		 1115 for (i = 0; i < port->num_mcs; i++)
1116 if (use_mcs)
1117 cb0->default_qpn_arr[i] =
1118 port->port_res[i].qp->init_attr.qp_nr;
1119 else
1120 cb0->default_qpn_arr[i] =
1121 port->port_res[0].qp->init_attr.qp_nr;
e542aa6b 1122
7a291083
JBT		 1123 if (netif_msg_ifup(port))
1124 ehea_dump(cb0, sizeof(*cb0), "ehea_configure_port");
1125
1126 mask = EHEA_BMASK_SET(H_PORT_CB0_PRC, 1)
1127 | EHEA_BMASK_SET(H_PORT_CB0_DEFQPNARRAY, 1);
1128
1129 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1130 port->logical_port_id,
1131 H_PORT_CB0, mask, cb0);
1132 ret = -EIO;
1133 if (hret != H_SUCCESS)
1134 goto out_free;
1135
1136 ret = 0;
1137
1138out_free:
1139 kfree(cb0);
1140out:
1141 return ret;
1142}
1143
e542aa6b 1144int ehea_gen_smrs(struct ehea_port_res *pr)
7a291083 1145{
e542aa6b 1146 int ret;
7a291083
JBT		 1147 struct ehea_adapter *adapter = pr->port->adapter;
1148
e542aa6b
JBT		 1149 ret = ehea_gen_smr(adapter, &adapter->mr, &pr->send_mr);
1150 if (ret)
7a291083
JBT		 1151 goto out;
1152
e542aa6b
JBT		 1153 ret = ehea_gen_smr(adapter, &adapter->mr, &pr->recv_mr);
1154 if (ret)
1155 goto out_free;
7a291083
JBT		 1156
1157 return 0;
1158
e542aa6b
JBT		 1159out_free:
1160 ehea_rem_mr(&pr->send_mr);
7a291083 1161out:
e542aa6b 1162 ehea_error("Generating SMRS failed\n");
7a291083
JBT		 1163 return -EIO;
1164}
1165
e542aa6b 1166int ehea_rem_smrs(struct ehea_port_res *pr)
7a291083 1167{
e542aa6b
JBT		 1168 if ((ehea_rem_mr(&pr->send_mr))
1169 || (ehea_rem_mr(&pr->recv_mr)))
1170 return -EIO;
1171 else
1172 return 0;
7a291083
JBT		 1173}
1174
1175static int ehea_init_q_skba(struct ehea_q_skb_arr *q_skba, int max_q_entries)
1176{
1177 int arr_size = sizeof(void*) * max_q_entries;
1178
1179 q_skba->arr = vmalloc(arr_size);
1180 if (!q_skba->arr)
1181 return -ENOMEM;
1182
1183 memset(q_skba->arr, 0, arr_size);
1184
1185 q_skba->len = max_q_entries;
1186 q_skba->index = 0;
1187 q_skba->os_skbs = 0;
1188
1189 return 0;
1190}
1191
1192static int ehea_init_port_res(struct ehea_port *port, struct ehea_port_res *pr,
1193 struct port_res_cfg *pr_cfg, int queue_token)
1194{
1195 struct ehea_adapter *adapter = port->adapter;
1196 enum ehea_eq_type eq_type = EHEA_EQ;
1197 struct ehea_qp_init_attr *init_attr = NULL;
1198 int ret = -EIO;
1199
1200 memset(pr, 0, sizeof(struct ehea_port_res));
1201
1202 pr->port = port;
7a291083
JBT		 1203 spin_lock_init(&pr->xmit_lock);
1204 spin_lock_init(&pr->netif_queue);
1205
18604c54
JBT		 1206 pr->eq = ehea_create_eq(adapter, eq_type, EHEA_MAX_ENTRIES_EQ, 0);
1207 if (!pr->eq) {
1208 ehea_error("create_eq failed (eq)");
7a291083
JBT		 1209 goto out_free;
1210 }
1211
1212 pr->recv_cq = ehea_create_cq(adapter, pr_cfg->max_entries_rcq,
18604c54 1213 pr->eq->fw_handle,
7a291083
JBT		 1214 port->logical_port_id);
1215 if (!pr->recv_cq) {
1216 ehea_error("create_cq failed (cq_recv)");
1217 goto out_free;
1218 }
1219
1220 pr->send_cq = ehea_create_cq(adapter, pr_cfg->max_entries_scq,
18604c54 1221 pr->eq->fw_handle,
7a291083
JBT		 1222 port->logical_port_id);
1223 if (!pr->send_cq) {
1224 ehea_error("create_cq failed (cq_send)");
1225 goto out_free;
1226 }
1227
1228 if (netif_msg_ifup(port))
1229 ehea_info("Send CQ: act_nr_cqes=%d, Recv CQ: act_nr_cqes=%d",
1230 pr->send_cq->attr.act_nr_of_cqes,
1231 pr->recv_cq->attr.act_nr_of_cqes);
1232
1233 init_attr = kzalloc(sizeof(*init_attr), GFP_KERNEL);
1234 if (!init_attr) {
1235 ret = -ENOMEM;
1236 ehea_error("no mem for ehea_qp_init_attr");
1237 goto out_free;
1238 }
1239
1240 init_attr->low_lat_rq1 = 1;
1241 init_attr->signalingtype = 1; /* generate CQE if specified in WQE */
1242 init_attr->rq_count = 3;
1243 init_attr->qp_token = queue_token;
1244 init_attr->max_nr_send_wqes = pr_cfg->max_entries_sq;
1245 init_attr->max_nr_rwqes_rq1 = pr_cfg->max_entries_rq1;
1246 init_attr->max_nr_rwqes_rq2 = pr_cfg->max_entries_rq2;
1247 init_attr->max_nr_rwqes_rq3 = pr_cfg->max_entries_rq3;
1248 init_attr->wqe_size_enc_sq = EHEA_SG_SQ;
1249 init_attr->wqe_size_enc_rq1 = EHEA_SG_RQ1;
1250 init_attr->wqe_size_enc_rq2 = EHEA_SG_RQ2;
1251 init_attr->wqe_size_enc_rq3 = EHEA_SG_RQ3;
1252 init_attr->rq2_threshold = EHEA_RQ2_THRESHOLD;
1253 init_attr->rq3_threshold = EHEA_RQ3_THRESHOLD;
1254 init_attr->port_nr = port->logical_port_id;
1255 init_attr->send_cq_handle = pr->send_cq->fw_handle;
1256 init_attr->recv_cq_handle = pr->recv_cq->fw_handle;
1257 init_attr->aff_eq_handle = port->qp_eq->fw_handle;
1258
1259 pr->qp = ehea_create_qp(adapter, adapter->pd, init_attr);
1260 if (!pr->qp) {
1261 ehea_error("create_qp failed");
1262 ret = -EIO;
1263 goto out_free;
1264 }
1265
1266 if (netif_msg_ifup(port))
1267 ehea_info("QP: qp_nr=%d\n act_nr_snd_wqe=%d\n nr_rwqe_rq1=%d\n "
1268 "nr_rwqe_rq2=%d\n nr_rwqe_rq3=%d", init_attr->qp_nr,
1269 init_attr->act_nr_send_wqes,
1270 init_attr->act_nr_rwqes_rq1,
1271 init_attr->act_nr_rwqes_rq2,
1272 init_attr->act_nr_rwqes_rq3);
1273
1274 ret = ehea_init_q_skba(&pr->sq_skba, init_attr->act_nr_send_wqes + 1);
1275 ret |= ehea_init_q_skba(&pr->rq1_skba, init_attr->act_nr_rwqes_rq1 + 1);
1276 ret |= ehea_init_q_skba(&pr->rq2_skba, init_attr->act_nr_rwqes_rq2 + 1);
1277 ret |= ehea_init_q_skba(&pr->rq3_skba, init_attr->act_nr_rwqes_rq3 + 1);
1278 if (ret)
1279 goto out_free;
1280
1281 pr->swqe_refill_th = init_attr->act_nr_send_wqes / 10;
1282 if (ehea_gen_smrs(pr) != 0) {
1283 ret = -EIO;
1284 goto out_free;
1285 }
18604c54 1286
7a291083
JBT		 1287 atomic_set(&pr->swqe_avail, init_attr->act_nr_send_wqes - 1);
1288
1289 kfree(init_attr);
18604c54 1290
bea3348e 1291 netif_napi_add(pr->port->netdev, &pr->napi, ehea_poll, 64);
18604c54 1292
d4dc4ec9
JBT		 1293 pr->lro_mgr.max_aggr = pr->port->lro_max_aggr;
1294 pr->lro_mgr.max_desc = MAX_LRO_DESCRIPTORS;
1295 pr->lro_mgr.lro_arr = pr->lro_desc;
1296 pr->lro_mgr.get_skb_header = get_skb_hdr;
1297 pr->lro_mgr.features = LRO_F_NAPI | LRO_F_EXTRACT_VLAN_ID;
1298 pr->lro_mgr.dev = port->netdev;
1299 pr->lro_mgr.ip_summed = CHECKSUM_UNNECESSARY;
1300 pr->lro_mgr.ip_summed_aggr = CHECKSUM_UNNECESSARY;
1301
7a291083
JBT		 1302 ret = 0;
1303 goto out;
1304
1305out_free:
1306 kfree(init_attr);
1307 vfree(pr->sq_skba.arr);
1308 vfree(pr->rq1_skba.arr);
1309 vfree(pr->rq2_skba.arr);
1310 vfree(pr->rq3_skba.arr);
1311 ehea_destroy_qp(pr->qp);
1312 ehea_destroy_cq(pr->send_cq);
1313 ehea_destroy_cq(pr->recv_cq);
18604c54 1314 ehea_destroy_eq(pr->eq);
7a291083
JBT		 1315out:
1316 return ret;
1317}
1318
1319static int ehea_clean_portres(struct ehea_port *port, struct ehea_port_res *pr)
1320{
1321 int ret, i;
1322
1323 ret = ehea_destroy_qp(pr->qp);
1324
1325 if (!ret) {
1326 ehea_destroy_cq(pr->send_cq);
1327 ehea_destroy_cq(pr->recv_cq);
18604c54 1328 ehea_destroy_eq(pr->eq);
7a291083
JBT		 1329
1330 for (i = 0; i < pr->rq1_skba.len; i++)
1331 if (pr->rq1_skba.arr[i])
1332 dev_kfree_skb(pr->rq1_skba.arr[i]);
1333
1334 for (i = 0; i < pr->rq2_skba.len; i++)
1335 if (pr->rq2_skba.arr[i])
1336 dev_kfree_skb(pr->rq2_skba.arr[i]);
1337
1338 for (i = 0; i < pr->rq3_skba.len; i++)
1339 if (pr->rq3_skba.arr[i])
1340 dev_kfree_skb(pr->rq3_skba.arr[i]);
1341
1342 for (i = 0; i < pr->sq_skba.len; i++)
1343 if (pr->sq_skba.arr[i])
1344 dev_kfree_skb(pr->sq_skba.arr[i]);
1345
1346 vfree(pr->rq1_skba.arr);
1347 vfree(pr->rq2_skba.arr);
1348 vfree(pr->rq3_skba.arr);
1349 vfree(pr->sq_skba.arr);
1350 ret = ehea_rem_smrs(pr);
1351 }
1352 return ret;
1353}
1354
1355/*
1356 * The write_* functions store information in swqe which is used by
1357 * the hardware to calculate the ip/tcp/udp checksum
1358 */
1359
1360static inline void write_ip_start_end(struct ehea_swqe *swqe,
1361 const struct sk_buff *skb)
1362{
eddc9ec5 1363 swqe->ip_start = skb_network_offset(skb);
c9bdd4b5 1364 swqe->ip_end = (u8)(swqe->ip_start + ip_hdrlen(skb) - 1);
7a291083
JBT		 1365}
1366
1367static inline void write_tcp_offset_end(struct ehea_swqe *swqe,
1368 const struct sk_buff *skb)
1369{
1370 swqe->tcp_offset =
1371 (u8)(swqe->ip_end + 1 + offsetof(struct tcphdr, check));
1372
1373 swqe->tcp_end = (u16)skb->len - 1;
1374}
1375
1376static inline void write_udp_offset_end(struct ehea_swqe *swqe,
1377 const struct sk_buff *skb)
1378{
1379 swqe->tcp_offset =
1380 (u8)(swqe->ip_end + 1 + offsetof(struct udphdr, check));
1381
1382 swqe->tcp_end = (u16)skb->len - 1;
1383}
1384
1385
1386static void write_swqe2_TSO(struct sk_buff *skb,
1387 struct ehea_swqe *swqe, u32 lkey)
1388{
1389 struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry;
1390 u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0];
1391 int skb_data_size = skb->len - skb->data_len;
1392 int headersize;
7a291083
JBT		 1393
1394 /* Packet is TCP with TSO enabled */
1395 swqe->tx_control |= EHEA_SWQE_TSO;
1396 swqe->mss = skb_shinfo(skb)->gso_size;
1397 /* copy only eth/ip/tcp headers to immediate data and
1398 * the rest of skb->data to sg1entry
1399 */
ab6a5bb6 1400 headersize = ETH_HLEN + ip_hdrlen(skb) + tcp_hdrlen(skb);
7a291083
JBT		 1401
1402 skb_data_size = skb->len - skb->data_len;
1403
1404 if (skb_data_size >= headersize) {
1405 /* copy immediate data */
d626f62b 1406 skb_copy_from_linear_data(skb, imm_data, headersize);
7a291083
JBT		 1407 swqe->immediate_data_length = headersize;
1408
1409 if (skb_data_size > headersize) {
1410 /* set sg1entry data */
1411 sg1entry->l_key = lkey;
1412 sg1entry->len = skb_data_size - headersize;
44a5b3d5
TK		 1413 sg1entry->vaddr =
1414 ehea_map_vaddr(skb->data + headersize);
7a291083
JBT		 1415 swqe->descriptors++;
1416 }
1417 } else
1418 ehea_error("cannot handle fragmented headers");
1419}
1420
1421static void write_swqe2_nonTSO(struct sk_buff *skb,
1422 struct ehea_swqe *swqe, u32 lkey)
1423{
1424 int skb_data_size = skb->len - skb->data_len;
1425 u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0];
1426 struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry;
7a291083
JBT		 1427
1428 /* Packet is any nonTSO type
1429 *
1430 * Copy as much as possible skb->data to immediate data and
1431 * the rest to sg1entry
1432 */
1433 if (skb_data_size >= SWQE2_MAX_IMM) {
1434 /* copy immediate data */
d626f62b 1435 skb_copy_from_linear_data(skb, imm_data, SWQE2_MAX_IMM);
7a291083
JBT		 1436
1437 swqe->immediate_data_length = SWQE2_MAX_IMM;
1438
1439 if (skb_data_size > SWQE2_MAX_IMM) {
1440 /* copy sg1entry data */
1441 sg1entry->l_key = lkey;
1442 sg1entry->len = skb_data_size - SWQE2_MAX_IMM;
44a5b3d5
TK		 1443 sg1entry->vaddr =
1444 ehea_map_vaddr(skb->data + SWQE2_MAX_IMM);
7a291083
JBT		 1445 swqe->descriptors++;
1446 }
1447 } else {
d626f62b 1448 skb_copy_from_linear_data(skb, imm_data, skb_data_size);
7a291083
JBT		 1449 swqe->immediate_data_length = skb_data_size;
1450 }
1451}
1452
1453static inline void write_swqe2_data(struct sk_buff *skb, struct net_device *dev,
1454 struct ehea_swqe *swqe, u32 lkey)
1455{
1456 struct ehea_vsgentry *sg_list, *sg1entry, *sgentry;
1457 skb_frag_t *frag;
1458 int nfrags, sg1entry_contains_frag_data, i;
7a291083
JBT		 1459
1460 nfrags = skb_shinfo(skb)->nr_frags;
1461 sg1entry = &swqe->u.immdata_desc.sg_entry;
1462 sg_list = (struct ehea_vsgentry*)&swqe->u.immdata_desc.sg_list;
1463 swqe->descriptors = 0;
1464 sg1entry_contains_frag_data = 0;
1465
1466 if ((dev->features & NETIF_F_TSO) && skb_shinfo(skb)->gso_size)
1467 write_swqe2_TSO(skb, swqe, lkey);
1468 else
1469 write_swqe2_nonTSO(skb, swqe, lkey);
1470
1471 /* write descriptors */
1472 if (nfrags > 0) {
1473 if (swqe->descriptors == 0) {
1474 /* sg1entry not yet used */
1475 frag = &skb_shinfo(skb)->frags[0];
1476
1477 /* copy sg1entry data */
1478 sg1entry->l_key = lkey;
1479 sg1entry->len = frag->size;
44a5b3d5
TK		 1480 sg1entry->vaddr =
1481 ehea_map_vaddr(page_address(frag->page)
1482 + frag->page_offset);
7a291083
JBT		 1483 swqe->descriptors++;
1484 sg1entry_contains_frag_data = 1;
1485 }
1486
1487 for (i = sg1entry_contains_frag_data; i < nfrags; i++) {
1488
1489 frag = &skb_shinfo(skb)->frags[i];
1490 sgentry = &sg_list[i - sg1entry_contains_frag_data];
1491
1492 sgentry->l_key = lkey;
1493 sgentry->len = frag->size;
44a5b3d5
TK		 1494 sgentry->vaddr =
1495 ehea_map_vaddr(page_address(frag->page)
1496 + frag->page_offset);
7a291083
JBT		 1497 swqe->descriptors++;
1498 }
1499 }
1500}
1501
1502static int ehea_broadcast_reg_helper(struct ehea_port *port, u32 hcallid)
1503{
1504 int ret = 0;
1505 u64 hret;
1506 u8 reg_type;
1507
1508 /* De/Register untagged packets */
1509 reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_UNTAGGED;
1510 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1511 port->logical_port_id,
1512 reg_type, port->mac_addr, 0, hcallid);
1513 if (hret != H_SUCCESS) {
f9e29228
TK		 1514 ehea_error("%sregistering bc address failed (tagged)",
1515 hcallid == H_REG_BCMC ? "" : "de");
7a291083
JBT		 1516 ret = -EIO;
1517 goto out_herr;
1518 }
1519
1520 /* De/Register VLAN packets */
1521 reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_VLANID_ALL;
1522 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1523 port->logical_port_id,
1524 reg_type, port->mac_addr, 0, hcallid);
1525 if (hret != H_SUCCESS) {
f9e29228
TK		 1526 ehea_error("%sregistering bc address failed (vlan)",
1527 hcallid == H_REG_BCMC ? "" : "de");
7a291083
JBT		 1528 ret = -EIO;
1529 }
1530out_herr:
1531 return ret;
1532}
1533
1534static int ehea_set_mac_addr(struct net_device *dev, void *sa)
1535{
1536 struct ehea_port *port = netdev_priv(dev);
1537 struct sockaddr *mac_addr = sa;
1538 struct hcp_ehea_port_cb0 *cb0;
1539 int ret;
1540 u64 hret;
1541
1542 if (!is_valid_ether_addr(mac_addr->sa_data)) {
1543 ret = -EADDRNOTAVAIL;
1544 goto out;
1545 }
1546
a1d261c5 1547 cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL);
7a291083
JBT		 1548 if (!cb0) {
1549 ehea_error("no mem for cb0");
1550 ret = -ENOMEM;
1551 goto out;
1552 }
1553
1554 memcpy(&(cb0->port_mac_addr), &(mac_addr->sa_data[0]), ETH_ALEN);
1555
1556 cb0->port_mac_addr = cb0->port_mac_addr >> 16;
1557
1558 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1559 port->logical_port_id, H_PORT_CB0,
1560 EHEA_BMASK_SET(H_PORT_CB0_MAC, 1), cb0);
1561 if (hret != H_SUCCESS) {
1562 ret = -EIO;
1563 goto out_free;
1564 }
1565
1566 memcpy(dev->dev_addr, mac_addr->sa_data, dev->addr_len);
1567
1568 /* Deregister old MAC in pHYP */
1569 ret = ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
1570 if (ret)
1571 goto out_free;
1572
1573 port->mac_addr = cb0->port_mac_addr << 16;
1574
1575 /* Register new MAC in pHYP */
1576 ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
1577 if (ret)
1578 goto out_free;
1579
1580 ret = 0;
1581out_free:
1582 kfree(cb0);
1583out:
1584 return ret;
1585}
1586
1587static void ehea_promiscuous_error(u64 hret, int enable)
1588{
7674a588
TK		 1589 if (hret == H_AUTHORITY)
1590 ehea_info("Hypervisor denied %sabling promiscuous mode",
1591 enable == 1 ? "en" : "dis");
1592 else
1593 ehea_error("failed %sabling promiscuous mode",
1594 enable == 1 ? "en" : "dis");
7a291083
JBT		 1595}
1596
1597static void ehea_promiscuous(struct net_device *dev, int enable)
1598{
1599 struct ehea_port *port = netdev_priv(dev);
1600 struct hcp_ehea_port_cb7 *cb7;
1601 u64 hret;
1602
1603 if ((enable && port->promisc) || (!enable && !port->promisc))
1604 return;
1605
a1d261c5 1606 cb7 = kzalloc(PAGE_SIZE, GFP_ATOMIC);
7a291083
JBT		 1607 if (!cb7) {
1608 ehea_error("no mem for cb7");
1609 goto out;
1610 }
1611
1612 /* Modify Pxs_DUCQPN in CB7 */
1613 cb7->def_uc_qpn = enable == 1 ? port->port_res[0].qp->fw_handle : 0;
1614
1615 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1616 port->logical_port_id,
1617 H_PORT_CB7, H_PORT_CB7_DUCQPN, cb7);
1618 if (hret) {
1619 ehea_promiscuous_error(hret, enable);
1620 goto out;
1621 }
1622
1623 port->promisc = enable;
1624out:
1625 kfree(cb7);
1626 return;
1627}
1628
1629static u64 ehea_multicast_reg_helper(struct ehea_port *port, u64 mc_mac_addr,
1630 u32 hcallid)
1631{
1632 u64 hret;
1633 u8 reg_type;
1634
1635 reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST
1636 | EHEA_BCMC_UNTAGGED;
1637
1638 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1639 port->logical_port_id,
1640 reg_type, mc_mac_addr, 0, hcallid);
1641 if (hret)
1642 goto out;
1643
1644 reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST
1645 | EHEA_BCMC_VLANID_ALL;
1646
1647 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1648 port->logical_port_id,
1649 reg_type, mc_mac_addr, 0, hcallid);
1650out:
1651 return hret;
1652}
1653
1654static int ehea_drop_multicast_list(struct net_device *dev)
1655{
1656 struct ehea_port *port = netdev_priv(dev);
1657 struct ehea_mc_list *mc_entry = port->mc_list;
1658 struct list_head *pos;
1659 struct list_head *temp;
1660 int ret = 0;
1661 u64 hret;
1662
1663 list_for_each_safe(pos, temp, &(port->mc_list->list)) {
1664 mc_entry = list_entry(pos, struct ehea_mc_list, list);
1665
1666 hret = ehea_multicast_reg_helper(port, mc_entry->macaddr,
1667 H_DEREG_BCMC);
1668 if (hret) {
1669 ehea_error("failed deregistering mcast MAC");
1670 ret = -EIO;
1671 }
1672
1673 list_del(pos);
1674 kfree(mc_entry);
1675 }
1676 return ret;
1677}
1678
1679static void ehea_allmulti(struct net_device *dev, int enable)
1680{
1681 struct ehea_port *port = netdev_priv(dev);
1682 u64 hret;
1683
1684 if (!port->allmulti) {
1685 if (enable) {
1686 /* Enable ALLMULTI */
1687 ehea_drop_multicast_list(dev);
1688 hret = ehea_multicast_reg_helper(port, 0, H_REG_BCMC);
1689 if (!hret)
1690 port->allmulti = 1;
1691 else
1692 ehea_error("failed enabling IFF_ALLMULTI");
1693 }
1694 } else
1695 if (!enable) {
1696 /* Disable ALLMULTI */
1697 hret = ehea_multicast_reg_helper(port, 0, H_DEREG_BCMC);
1698 if (!hret)
1699 port->allmulti = 0;
1700 else
1701 ehea_error("failed disabling IFF_ALLMULTI");
1702 }
1703}
1704
1705static void ehea_add_multicast_entry(struct ehea_port* port, u8* mc_mac_addr)
1706{
1707 struct ehea_mc_list *ehea_mcl_entry;
1708 u64 hret;
1709
1e1675cc 1710 ehea_mcl_entry = kzalloc(sizeof(*ehea_mcl_entry), GFP_ATOMIC);
7a291083
JBT		 1711 if (!ehea_mcl_entry) {
1712 ehea_error("no mem for mcl_entry");
1713 return;
1714 }
1715
1716 INIT_LIST_HEAD(&ehea_mcl_entry->list);
1717
1718 memcpy(&ehea_mcl_entry->macaddr, mc_mac_addr, ETH_ALEN);
1719
1720 hret = ehea_multicast_reg_helper(port, ehea_mcl_entry->macaddr,
1721 H_REG_BCMC);
1722 if (!hret)
1723 list_add(&ehea_mcl_entry->list, &port->mc_list->list);
1724 else {
1725 ehea_error("failed registering mcast MAC");
1726 kfree(ehea_mcl_entry);
1727 }
1728}
1729
1730static void ehea_set_multicast_list(struct net_device *dev)
1731{
1732 struct ehea_port *port = netdev_priv(dev);
1733 struct dev_mc_list *k_mcl_entry;
1734 int ret, i;
1735
1736 if (dev->flags & IFF_PROMISC) {
1737 ehea_promiscuous(dev, 1);
1738 return;
1739 }
1740 ehea_promiscuous(dev, 0);
1741
1742 if (dev->flags & IFF_ALLMULTI) {
1743 ehea_allmulti(dev, 1);
1744 return;
1745 }
1746 ehea_allmulti(dev, 0);
1747
1748 if (dev->mc_count) {
1749 ret = ehea_drop_multicast_list(dev);
1750 if (ret) {
1751 /* Dropping the current multicast list failed.
1752 * Enabling ALL_MULTI is the best we can do.
1753 */
1754 ehea_allmulti(dev, 1);
1755 }
1756
1757 if (dev->mc_count > port->adapter->max_mc_mac) {
1758 ehea_info("Mcast registration limit reached (0x%lx). "
1759 "Use ALLMULTI!",
1760 port->adapter->max_mc_mac);
1761 goto out;
1762 }
1763
1764 for (i = 0, k_mcl_entry = dev->mc_list;
1765 i < dev->mc_count;
1766 i++, k_mcl_entry = k_mcl_entry->next) {
1767 ehea_add_multicast_entry(port, k_mcl_entry->dmi_addr);
1768 }
1769 }
1770out:
1771 return;
1772}
1773
1774static int ehea_change_mtu(struct net_device *dev, int new_mtu)
1775{
1776 if ((new_mtu < 68) || (new_mtu > EHEA_MAX_PACKET_SIZE))
1777 return -EINVAL;
1778 dev->mtu = new_mtu;
1779 return 0;
1780}
1781
1782static void ehea_xmit2(struct sk_buff *skb, struct net_device *dev,
1783 struct ehea_swqe *swqe, u32 lkey)
1784{
1785 if (skb->protocol == htons(ETH_P_IP)) {
eddc9ec5 1786 const struct iphdr *iph = ip_hdr(skb);
d1d25aab 1787
7a291083
JBT		 1788 /* IPv4 */
1789 swqe->tx_control |= EHEA_SWQE_CRC
1790 | EHEA_SWQE_IP_CHECKSUM
1791 | EHEA_SWQE_TCP_CHECKSUM
1792 | EHEA_SWQE_IMM_DATA_PRESENT
1793 | EHEA_SWQE_DESCRIPTORS_PRESENT;
1794
1795 write_ip_start_end(swqe, skb);
1796
eddc9ec5 1797 if (iph->protocol == IPPROTO_UDP) {
d1d25aab
JBT		 1798 if ((iph->frag_off & IP_MF)
1799 || (iph->frag_off & IP_OFFSET))
7a291083
JBT		 1800 /* IP fragment, so don't change cs */
1801 swqe->tx_control &= ~EHEA_SWQE_TCP_CHECKSUM;
1802 else
1803 write_udp_offset_end(swqe, skb);
eddc9ec5 1804 } else if (iph->protocol == IPPROTO_TCP) {
7a291083
JBT		 1805 write_tcp_offset_end(swqe, skb);
1806 }
1807
1808 /* icmp (big data) and ip segmentation packets (all other ip
1809 packets) do not require any special handling */
1810
1811 } else {
1812 /* Other Ethernet Protocol */
1813 swqe->tx_control |= EHEA_SWQE_CRC
1814 | EHEA_SWQE_IMM_DATA_PRESENT
1815 | EHEA_SWQE_DESCRIPTORS_PRESENT;
1816 }
1817
1818 write_swqe2_data(skb, dev, swqe, lkey);
1819}
1820
1821static void ehea_xmit3(struct sk_buff *skb, struct net_device *dev,
1822 struct ehea_swqe *swqe)
1823{
1824 int nfrags = skb_shinfo(skb)->nr_frags;
1825 u8 *imm_data = &swqe->u.immdata_nodesc.immediate_data[0];
1826 skb_frag_t *frag;
1827 int i;
1828
1829 if (skb->protocol == htons(ETH_P_IP)) {
eddc9ec5 1830 const struct iphdr *iph = ip_hdr(skb);
d1d25aab 1831
7a291083
JBT		 1832 /* IPv4 */
1833 write_ip_start_end(swqe, skb);
1834
eddc9ec5 1835 if (iph->protocol == IPPROTO_TCP) {
7a291083
JBT		 1836 swqe->tx_control |= EHEA_SWQE_CRC
1837 | EHEA_SWQE_IP_CHECKSUM
1838 | EHEA_SWQE_TCP_CHECKSUM
1839 | EHEA_SWQE_IMM_DATA_PRESENT;
1840
1841 write_tcp_offset_end(swqe, skb);
1842
eddc9ec5 1843 } else if (iph->protocol == IPPROTO_UDP) {
d1d25aab
JBT		 1844 if ((iph->frag_off & IP_MF)
1845 || (iph->frag_off & IP_OFFSET))
7a291083
JBT		 1846 /* IP fragment, so don't change cs */
1847 swqe->tx_control |= EHEA_SWQE_CRC
1848 | EHEA_SWQE_IMM_DATA_PRESENT;
1849 else {
1850 swqe->tx_control |= EHEA_SWQE_CRC
1851 | EHEA_SWQE_IP_CHECKSUM
1852 | EHEA_SWQE_TCP_CHECKSUM
1853 | EHEA_SWQE_IMM_DATA_PRESENT;
1854
1855 write_udp_offset_end(swqe, skb);
1856 }
1857 } else {
1858 /* icmp (big data) and
1859 ip segmentation packets (all other ip packets) */
1860 swqe->tx_control |= EHEA_SWQE_CRC
1861 | EHEA_SWQE_IP_CHECKSUM
1862 | EHEA_SWQE_IMM_DATA_PRESENT;
1863 }
1864 } else {
1865 /* Other Ethernet Protocol */
1866 swqe->tx_control |= EHEA_SWQE_CRC | EHEA_SWQE_IMM_DATA_PRESENT;
1867 }
1868 /* copy (immediate) data */
1869 if (nfrags == 0) {
1870 /* data is in a single piece */
d626f62b 1871 skb_copy_from_linear_data(skb, imm_data, skb->len);
7a291083
JBT		 1872 } else {
1873 /* first copy data from the skb->data buffer ... */
d626f62b
ACM		 1874 skb_copy_from_linear_data(skb, imm_data,
1875 skb->len - skb->data_len);
7a291083
JBT		 1876 imm_data += skb->len - skb->data_len;
1877
1878 /* ... then copy data from the fragments */
1879 for (i = 0; i < nfrags; i++) {
1880 frag = &skb_shinfo(skb)->frags[i];
1881 memcpy(imm_data,
1882 page_address(frag->page) + frag->page_offset,
1883 frag->size);
1884 imm_data += frag->size;
1885 }
1886 }
1887 swqe->immediate_data_length = skb->len;
1888 dev_kfree_skb(skb);
1889}
1890
18604c54
JBT		 1891static inline int ehea_hash_skb(struct sk_buff *skb, int num_qps)
1892{
1893 struct tcphdr *tcp;
1894 u32 tmp;
1895
1896 if ((skb->protocol == htons(ETH_P_IP)) &&
88ca2d07
TK		 1897 (ip_hdr(skb)->protocol == IPPROTO_TCP)) {
1898 tcp = (struct tcphdr*)(skb_network_header(skb) + (ip_hdr(skb)->ihl * 4));
18604c54 1899 tmp = (tcp->source + (tcp->dest << 16)) % 31;
88ca2d07 1900 tmp += ip_hdr(skb)->daddr % 31;
18604c54
JBT		 1901 return tmp % num_qps;
1902 }
1903 else
1904 return 0;
1905}
1906
7a291083
JBT		 1907static int ehea_start_xmit(struct sk_buff *skb, struct net_device *dev)
1908{
1909 struct ehea_port *port = netdev_priv(dev);
1910 struct ehea_swqe *swqe;
1911 unsigned long flags;
1912 u32 lkey;
1913 int swqe_index;
18604c54
JBT		 1914 struct ehea_port_res *pr;
1915
1916 pr = &port->port_res[ehea_hash_skb(skb, port->num_tx_qps)];
1917
18604c54
JBT		 1918 if (!spin_trylock(&pr->xmit_lock))
1919 return NETDEV_TX_BUSY;
1920
1921 if (pr->queue_stopped) {
1922 spin_unlock(&pr->xmit_lock);
1923 return NETDEV_TX_BUSY;
1924 }
7a291083
JBT		 1925
1926 swqe = ehea_get_swqe(pr->qp, &swqe_index);
1927 memset(swqe, 0, SWQE_HEADER_SIZE);
1928 atomic_dec(&pr->swqe_avail);
1929
1930 if (skb->len <= SWQE3_MAX_IMM) {
1931 u32 sig_iv = port->sig_comp_iv;
1932 u32 swqe_num = pr->swqe_id_counter;
1933 ehea_xmit3(skb, dev, swqe);
1934 swqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE3_TYPE)
1935 | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, swqe_num);
1936 if (pr->swqe_ll_count >= (sig_iv - 1)) {
1937 swqe->wr_id |= EHEA_BMASK_SET(EHEA_WR_ID_REFILL,
1938 sig_iv);
1939 swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
1940 pr->swqe_ll_count = 0;
1941 } else
1942 pr->swqe_ll_count += 1;
1943 } else {
1944 swqe->wr_id =
1945 EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE2_TYPE)
1946 | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, pr->swqe_id_counter)
acbddb59 1947 | EHEA_BMASK_SET(EHEA_WR_ID_REFILL, 1)
7a291083
JBT		 1948 | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, pr->sq_skba.index);
1949 pr->sq_skba.arr[pr->sq_skba.index] = skb;
1950
1951 pr->sq_skba.index++;
1952 pr->sq_skba.index &= (pr->sq_skba.len - 1);
1953
1954 lkey = pr->send_mr.lkey;
1955 ehea_xmit2(skb, dev, swqe, lkey);
acbddb59 1956 swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
7a291083
JBT		 1957 }
1958 pr->swqe_id_counter += 1;
1959
1960 if (port->vgrp && vlan_tx_tag_present(skb)) {
1961 swqe->tx_control |= EHEA_SWQE_VLAN_INSERT;
1962 swqe->vlan_tag = vlan_tx_tag_get(skb);
1963 }
1964
1965 if (netif_msg_tx_queued(port)) {
1966 ehea_info("post swqe on QP %d", pr->qp->init_attr.qp_nr);
bff0a55f 1967 ehea_dump(swqe, 512, "swqe");
7a291083
JBT		 1968 }
1969
44c82152
TK		 1970 if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags)))
1971 goto out;
1972
7a291083
JBT		 1973 ehea_post_swqe(pr->qp, swqe);
1974 pr->tx_packets++;
1975
1976 if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) {
1977 spin_lock_irqsave(&pr->netif_queue, flags);
1978 if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) {
acbddb59 1979 pr->p_stats.queue_stopped++;
7a291083
JBT		 1980 netif_stop_queue(dev);
1981 pr->queue_stopped = 1;
1982 }
1983 spin_unlock_irqrestore(&pr->netif_queue, flags);
1984 }
1985 dev->trans_start = jiffies;
1986 spin_unlock(&pr->xmit_lock);
44c82152 1987out:
7a291083
JBT		 1988 return NETDEV_TX_OK;
1989}
1990
1991static void ehea_vlan_rx_register(struct net_device *dev,
1992 struct vlan_group *grp)
1993{
1994 struct ehea_port *port = netdev_priv(dev);
1995 struct ehea_adapter *adapter = port->adapter;
1996 struct hcp_ehea_port_cb1 *cb1;
1997 u64 hret;
1998
1999 port->vgrp = grp;
2000
a1d261c5 2001 cb1 = kzalloc(PAGE_SIZE, GFP_KERNEL);
7a291083
JBT		 2002 if (!cb1) {
2003 ehea_error("no mem for cb1");
2004 goto out;
2005 }
2006
dec590c1 2007 memset(cb1->vlan_filter, 0, sizeof(cb1->vlan_filter));
7a291083
JBT		 2008
2009 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
2010 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2011 if (hret != H_SUCCESS)
2012 ehea_error("modify_ehea_port failed");
2013
2014 kfree(cb1);
2015out:
2016 return;
2017}
2018
2019static void ehea_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
2020{
2021 struct ehea_port *port = netdev_priv(dev);
2022 struct ehea_adapter *adapter = port->adapter;
2023 struct hcp_ehea_port_cb1 *cb1;
2024 int index;
2025 u64 hret;
2026
a1d261c5 2027 cb1 = kzalloc(PAGE_SIZE, GFP_KERNEL);
7a291083
JBT		 2028 if (!cb1) {
2029 ehea_error("no mem for cb1");
2030 goto out;
2031 }
2032
2033 hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
2034 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2035 if (hret != H_SUCCESS) {
2036 ehea_error("query_ehea_port failed");
2037 goto out;
2038 }
2039
2040 index = (vid / 64);
dec590c1 2041 cb1->vlan_filter[index] |= ((u64)(0x8000000000000000 >> (vid & 0x3F)));
7a291083
JBT		 2042
2043 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
2044 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2045 if (hret != H_SUCCESS)
2046 ehea_error("modify_ehea_port failed");
2047out:
2048 kfree(cb1);
2049 return;
2050}
2051
2052static void ehea_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
2053{
2054 struct ehea_port *port = netdev_priv(dev);
2055 struct ehea_adapter *adapter = port->adapter;
2056 struct hcp_ehea_port_cb1 *cb1;
2057 int index;
2058 u64 hret;
2059
5c15bdec 2060 vlan_group_set_device(port->vgrp, vid, NULL);
7a291083 2061
a1d261c5 2062 cb1 = kzalloc(PAGE_SIZE, GFP_KERNEL);
7a291083
JBT		 2063 if (!cb1) {
2064 ehea_error("no mem for cb1");
2065 goto out;
2066 }
2067
2068 hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
2069 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2070 if (hret != H_SUCCESS) {
2071 ehea_error("query_ehea_port failed");
2072 goto out;
2073 }
2074
2075 index = (vid / 64);
dec590c1 2076 cb1->vlan_filter[index] &= ~((u64)(0x8000000000000000 >> (vid & 0x3F)));
7a291083
JBT		 2077
2078 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
2079 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2080 if (hret != H_SUCCESS)
2081 ehea_error("modify_ehea_port failed");
2082out:
2083 kfree(cb1);
2084 return;
2085}
2086
2087int ehea_activate_qp(struct ehea_adapter *adapter, struct ehea_qp *qp)
2088{
2089 int ret = -EIO;
2090 u64 hret;
2091 u16 dummy16 = 0;
2092 u64 dummy64 = 0;
2093 struct hcp_modify_qp_cb0* cb0;
2094
a1d261c5 2095 cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL);
7a291083
JBT		 2096 if (!cb0) {
2097 ret = -ENOMEM;
2098 goto out;
2099 }
2100
2101 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2102 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2103 if (hret != H_SUCCESS) {
2104 ehea_error("query_ehea_qp failed (1)");
2105 goto out;
2106 }
2107
2108 cb0->qp_ctl_reg = H_QP_CR_STATE_INITIALIZED;
2109 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2110 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2111 &dummy64, &dummy64, &dummy16, &dummy16);
2112 if (hret != H_SUCCESS) {
2113 ehea_error("modify_ehea_qp failed (1)");
2114 goto out;
2115 }
2116
2117 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2118 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2119 if (hret != H_SUCCESS) {
2120 ehea_error("query_ehea_qp failed (2)");
2121 goto out;
2122 }
2123
2124 cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_INITIALIZED;
2125 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2126 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2127 &dummy64, &dummy64, &dummy16, &dummy16);
2128 if (hret != H_SUCCESS) {
2129 ehea_error("modify_ehea_qp failed (2)");
2130 goto out;
2131 }
2132
2133 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2134 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2135 if (hret != H_SUCCESS) {
2136 ehea_error("query_ehea_qp failed (3)");
2137 goto out;
2138 }
2139
2140 cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_RDY2SND;
2141 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2142 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2143 &dummy64, &dummy64, &dummy16, &dummy16);
2144 if (hret != H_SUCCESS) {
2145 ehea_error("modify_ehea_qp failed (3)");
2146 goto out;
2147 }
2148
2149 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2150 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2151 if (hret != H_SUCCESS) {
2152 ehea_error("query_ehea_qp failed (4)");
2153 goto out;
2154 }
2155
2156 ret = 0;
2157out:
2158 kfree(cb0);
2159 return ret;
2160}
2161
2162static int ehea_port_res_setup(struct ehea_port *port, int def_qps,
2163 int add_tx_qps)
2164{
2165 int ret, i;
2166 struct port_res_cfg pr_cfg, pr_cfg_small_rx;
2167 enum ehea_eq_type eq_type = EHEA_EQ;
2168
2169 port->qp_eq = ehea_create_eq(port->adapter, eq_type,
2170 EHEA_MAX_ENTRIES_EQ, 1);
2171 if (!port->qp_eq) {
2172 ret = -EINVAL;
2173 ehea_error("ehea_create_eq failed (qp_eq)");
2174 goto out_kill_eq;
2175 }
2176
2177 pr_cfg.max_entries_rcq = rq1_entries + rq2_entries + rq3_entries;
18604c54 2178 pr_cfg.max_entries_scq = sq_entries * 2;
7a291083
JBT		 2179 pr_cfg.max_entries_sq = sq_entries;
2180 pr_cfg.max_entries_rq1 = rq1_entries;
2181 pr_cfg.max_entries_rq2 = rq2_entries;
2182 pr_cfg.max_entries_rq3 = rq3_entries;
2183
2184 pr_cfg_small_rx.max_entries_rcq = 1;
2185 pr_cfg_small_rx.max_entries_scq = sq_entries;
2186 pr_cfg_small_rx.max_entries_sq = sq_entries;
2187 pr_cfg_small_rx.max_entries_rq1 = 1;
2188 pr_cfg_small_rx.max_entries_rq2 = 1;
2189 pr_cfg_small_rx.max_entries_rq3 = 1;
2190
2191 for (i = 0; i < def_qps; i++) {
2192 ret = ehea_init_port_res(port, &port->port_res[i], &pr_cfg, i);
2193 if (ret)
2194 goto out_clean_pr;
2195 }
2196 for (i = def_qps; i < def_qps + add_tx_qps; i++) {
2197 ret = ehea_init_port_res(port, &port->port_res[i],
2198 &pr_cfg_small_rx, i);
2199 if (ret)
2200 goto out_clean_pr;
2201 }
2202
2203 return 0;
2204
2205out_clean_pr:
2206 while (--i >= 0)
2207 ehea_clean_portres(port, &port->port_res[i]);
2208
2209out_kill_eq:
2210 ehea_destroy_eq(port->qp_eq);
2211 return ret;
2212}
2213
2214static int ehea_clean_all_portres(struct ehea_port *port)
2215{
2216 int ret = 0;
2217 int i;
2218
2219 for(i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
2220 ret |= ehea_clean_portres(port, &port->port_res[i]);
2221
2222 ret |= ehea_destroy_eq(port->qp_eq);
2223
2224 return ret;
2225}
2226
35cf2e2e 2227static void ehea_remove_adapter_mr(struct ehea_adapter *adapter)
1211bb6d 2228{
35cf2e2e
TK		 2229 if (adapter->active_ports)
2230 return;
1211bb6d
TK		 2231
2232 ehea_rem_mr(&adapter->mr);
2233}
2234
35cf2e2e 2235static int ehea_add_adapter_mr(struct ehea_adapter *adapter)
1211bb6d 2236{
35cf2e2e
TK		 2237 if (adapter->active_ports)
2238 return 0;
1211bb6d
TK		 2239
2240 return ehea_reg_kernel_mr(adapter, &adapter->mr);
2241}
2242
7a291083
JBT		 2243static int ehea_up(struct net_device *dev)
2244{
2245 int ret, i;
2246 struct ehea_port *port = netdev_priv(dev);
7a291083
JBT		 2247
2248 if (port->state == EHEA_PORT_UP)
2249 return 0;
2250
2251 ret = ehea_port_res_setup(port, port->num_def_qps,
2252 port->num_add_tx_qps);
2253 if (ret) {
2254 ehea_error("port_res_failed");
2255 goto out;
2256 }
2257
2258 /* Set default QP for this port */
2259 ret = ehea_configure_port(port);
2260 if (ret) {
2261 ehea_error("ehea_configure_port failed. ret:%d", ret);
2262 goto out_clean_pr;
2263 }
2264
7a291083
JBT		 2265 ret = ehea_reg_interrupts(dev);
2266 if (ret) {
f9e29228
TK		 2267 ehea_error("reg_interrupts failed. ret:%d", ret);
2268 goto out_clean_pr;
7a291083
JBT		 2269 }
2270
2271 for(i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
2272 ret = ehea_activate_qp(port->adapter, port->port_res[i].qp);
2273 if (ret) {
2274 ehea_error("activate_qp failed");
2275 goto out_free_irqs;
2276 }
2277 }
2278
2279 for(i = 0; i < port->num_def_qps; i++) {
2280 ret = ehea_fill_port_res(&port->port_res[i]);
2281 if (ret) {
2282 ehea_error("out_free_irqs");
2283 goto out_free_irqs;
2284 }
2285 }
2286
2287 ret = 0;
2288 port->state = EHEA_PORT_UP;
2289 goto out;
2290
2291out_free_irqs:
2292 ehea_free_interrupts(dev);
2293
7a291083
JBT		 2294out_clean_pr:
2295 ehea_clean_all_portres(port);
2296out:
44c82152
TK		 2297 if (ret)
2298 ehea_info("Failed starting %s. ret=%i", dev->name, ret);
2299
7a291083
JBT		 2300 return ret;
2301}
2302
bea3348e
SH		 2303static void port_napi_disable(struct ehea_port *port)
2304{
2305 int i;
2306
2307 for (i = 0; i < port->num_def_qps; i++)
2308 napi_disable(&port->port_res[i].napi);
2309}
2310
2311static void port_napi_enable(struct ehea_port *port)
2312{
2313 int i;
2314
2315 for (i = 0; i < port->num_def_qps; i++)
2316 napi_enable(&port->port_res[i].napi);
2317}
2318
7a291083
JBT		 2319static int ehea_open(struct net_device *dev)
2320{
2321 int ret;
2322 struct ehea_port *port = netdev_priv(dev);
2323
2324 down(&port->port_lock);
2325
2326 if (netif_msg_ifup(port))
2327 ehea_info("enabling port %s", dev->name);
2328
2329 ret = ehea_up(dev);
bea3348e
SH		 2330 if (!ret) {
2331 port_napi_enable(port);
7a291083 2332 netif_start_queue(dev);
bea3348e 2333 }
7a291083
JBT		 2334
2335 up(&port->port_lock);
2336
2337 return ret;
2338}
2339
2340static int ehea_down(struct net_device *dev)
2341{
bea3348e 2342 int ret;
7a291083
JBT		 2343 struct ehea_port *port = netdev_priv(dev);
2344
2345 if (port->state == EHEA_PORT_DOWN)
2346 return 0;
2347
2348 ehea_drop_multicast_list(dev);
2349 ehea_free_interrupts(dev);
2350
bea3348e 2351 port_napi_disable(port);
7a291083 2352
7a291083 2353 port->state = EHEA_PORT_DOWN;
44c82152
TK		 2354
2355 ret = ehea_clean_all_portres(port);
2356 if (ret)
2357 ehea_info("Failed freeing resources for %s. ret=%i",
2358 dev->name, ret);
2359
7a291083
JBT		 2360 return ret;
2361}
2362
2363static int ehea_stop(struct net_device *dev)
2364{
2365 int ret;
2366 struct ehea_port *port = netdev_priv(dev);
2367
2368 if (netif_msg_ifdown(port))
2369 ehea_info("disabling port %s", dev->name);
2370
2371 flush_workqueue(port->adapter->ehea_wq);
2372 down(&port->port_lock);
2373 netif_stop_queue(dev);
2374 ret = ehea_down(dev);
2375 up(&port->port_lock);
2376 return ret;
2377}
2378
c4028958 2379static void ehea_reset_port(struct work_struct *work)
7a291083
JBT		 2380{
2381 int ret;
c4028958
DH		 2382 struct ehea_port *port =
2383 container_of(work, struct ehea_port, reset_task);
2384 struct net_device *dev = port->netdev;
7a291083
JBT		 2385
2386 port->resets++;
2387 down(&port->port_lock);
2388 netif_stop_queue(dev);
bea3348e
SH		 2389
2390 port_napi_disable(port);
7a291083 2391
44c82152 2392 ehea_down(dev);
7a291083
JBT		 2393
2394 ret = ehea_up(dev);
44c82152 2395 if (ret)
7a291083 2396 goto out;
7a291083
JBT		 2397
2398 if (netif_msg_timer(port))
2399 ehea_info("Device %s resetted successfully", dev->name);
2400
bea3348e
SH		 2401 port_napi_enable(port);
2402
7a291083
JBT		 2403 netif_wake_queue(dev);
2404out:
2405 up(&port->port_lock);
2406 return;
2407}
2408
44c82152
TK		 2409static void ehea_rereg_mrs(struct work_struct *work)
2410{
2411 int ret, i;
2412 struct ehea_adapter *adapter;
2413
2414 ehea_info("LPAR memory enlarged - re-initializing driver");
2415
2416 list_for_each_entry(adapter, &adapter_list, list)
2417 if (adapter->active_ports) {
2418 /* Shutdown all ports */
2419 for (i = 0; i < EHEA_MAX_PORTS; i++) {
2420 struct ehea_port *port = adapter->port[i];
2421
2422 if (port) {
2423 struct net_device *dev = port->netdev;
2424
2425 if (dev->flags & IFF_UP) {
2426 ehea_info("stopping %s",
2427 dev->name);
2428 down(&port->port_lock);
2429 netif_stop_queue(dev);
bea3348e
SH		 2430
2431 port_napi_disable(port);
2432
44c82152
TK		 2433 ehea_down(dev);
2434 up(&port->port_lock);
2435 }
2436 }
2437 }
2438
2439 /* Unregister old memory region */
2440 ret = ehea_rem_mr(&adapter->mr);
2441 if (ret) {
2442 ehea_error("unregister MR failed - driver"
2443 " inoperable!");
2444 goto out;
2445 }
2446 }
2447
2448 ehea_destroy_busmap();
2449
2450 ret = ehea_create_busmap();
2451 if (ret)
2452 goto out;
2453
2454 clear_bit(__EHEA_STOP_XFER, &ehea_driver_flags);
2455
2456 list_for_each_entry(adapter, &adapter_list, list)
2457 if (adapter->active_ports) {
2458 /* Register new memory region */
2459 ret = ehea_reg_kernel_mr(adapter, &adapter->mr);
2460 if (ret) {
2461 ehea_error("register MR failed - driver"
2462 " inoperable!");
2463 goto out;
2464 }
2465
2466 /* Restart all ports */
2467 for (i = 0; i < EHEA_MAX_PORTS; i++) {
2468 struct ehea_port *port = adapter->port[i];
2469
2470 if (port) {
2471 struct net_device *dev = port->netdev;
2472
2473 if (dev->flags & IFF_UP) {
2474 ehea_info("restarting %s",
2475 dev->name);
2476 down(&port->port_lock);
2477
2478 ret = ehea_up(dev);
2479 if (!ret) {
bea3348e 2480 port_napi_enable(port);
44c82152
TK		 2481 netif_wake_queue(dev);
2482 }
2483
2484 up(&port->port_lock);
2485 }
2486 }
2487 }
2488 }
2489out:
2490 return;
2491}
2492
7a291083
JBT		 2493static void ehea_tx_watchdog(struct net_device *dev)
2494{
2495 struct ehea_port *port = netdev_priv(dev);
2496
2497 if (netif_carrier_ok(dev))
2498 queue_work(port->adapter->ehea_wq, &port->reset_task);
2499}
2500
2501int ehea_sense_adapter_attr(struct ehea_adapter *adapter)
2502{
2503 struct hcp_query_ehea *cb;
2504 u64 hret;
2505 int ret;
2506
a1d261c5 2507 cb = kzalloc(PAGE_SIZE, GFP_KERNEL);
7a291083
JBT		 2508 if (!cb) {
2509 ret = -ENOMEM;
2510 goto out;
2511 }
2512
2513 hret = ehea_h_query_ehea(adapter->handle, cb);
2514
2515 if (hret != H_SUCCESS) {
2516 ret = -EIO;
2517 goto out_herr;
2518 }
2519
7a291083
JBT		 2520 adapter->max_mc_mac = cb->max_mc_mac - 1;
2521 ret = 0;
2522
2523out_herr:
2524 kfree(cb);
2525out:
2526 return ret;
2527}
2528
1acf2318 2529int ehea_get_jumboframe_status(struct ehea_port *port, int *jumbo)
7a291083 2530{
7a291083 2531 struct hcp_ehea_port_cb4 *cb4;
1acf2318
JBT		 2532 u64 hret;
2533 int ret = 0;
7a291083 2534
1acf2318 2535 *jumbo = 0;
7a291083 2536
1acf2318 2537 /* (Try to) enable *jumbo frames */
a1d261c5 2538 cb4 = kzalloc(PAGE_SIZE, GFP_KERNEL);
7a291083
JBT		 2539 if (!cb4) {
2540 ehea_error("no mem for cb4");
1acf2318
JBT		 2541 ret = -ENOMEM;
2542 goto out;
7a291083 2543 } else {
1acf2318 2544 hret = ehea_h_query_ehea_port(port->adapter->handle,
9c750b7d
TK		 2545 port->logical_port_id,
2546 H_PORT_CB4,
2547 H_PORT_CB4_JUMBO, cb4);
9c750b7d
TK		 2548 if (hret == H_SUCCESS) {
2549 if (cb4->jumbo_frame)
1acf2318 2550 *jumbo = 1;
9c750b7d
TK		 2551 else {
2552 cb4->jumbo_frame = 1;
1acf2318
JBT		 2553 hret = ehea_h_modify_ehea_port(port->adapter->
2554 handle,
9c750b7d 2555 port->
1acf2318 2556 logical_port_id,
9c750b7d
TK		 2557 H_PORT_CB4,
2558 H_PORT_CB4_JUMBO,
2559 cb4);
2560 if (hret == H_SUCCESS)
1acf2318 2561 *jumbo = 1;
9c750b7d 2562 }
1acf2318
JBT		 2563 } else
2564 ret = -EINVAL;
2565
7a291083
JBT		 2566 kfree(cb4);
2567 }
1acf2318
JBT		 2568out:
2569 return ret;
2570}
2571
2572static ssize_t ehea_show_port_id(struct device *dev,
2573 struct device_attribute *attr, char *buf)
2574{
2575 struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev);
a8e34fda 2576 return sprintf(buf, "%d", port->logical_port_id);
1acf2318
JBT		 2577}
2578
2579static DEVICE_ATTR(log_port_id, S_IRUSR | S_IRGRP | S_IROTH, ehea_show_port_id,
2580 NULL);
2581
2582static void __devinit logical_port_release(struct device *dev)
2583{
2584 struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev);
2585 of_node_put(port->ofdev.node);
2586}
2587
d1dea38d 2588static int ehea_driver_sysfs_add(struct device *dev,
d1d25aab 2589 struct device_driver *driver)
d1dea38d
TK		 2590{
2591 int ret;
2592
2593 ret = sysfs_create_link(&driver->kobj, &dev->kobj,
2594 kobject_name(&dev->kobj));
2595 if (ret == 0) {
2596 ret = sysfs_create_link(&dev->kobj, &driver->kobj,
2597 "driver");
2598 if (ret)
2599 sysfs_remove_link(&driver->kobj,
2600 kobject_name(&dev->kobj));
2601 }
2602 return ret;
2603}
2604
2605static void ehea_driver_sysfs_remove(struct device *dev,
d1d25aab 2606 struct device_driver *driver)
d1dea38d
TK		 2607{
2608 struct device_driver *drv = driver;
2609
2610 if (drv) {
2611 sysfs_remove_link(&drv->kobj, kobject_name(&dev->kobj));
2612 sysfs_remove_link(&dev->kobj, "driver");
2613 }
2614}
2615
1acf2318
JBT		 2616static struct device *ehea_register_port(struct ehea_port *port,
2617 struct device_node *dn)
2618{
2619 int ret;
2620
2621 port->ofdev.node = of_node_get(dn);
2622 port->ofdev.dev.parent = &port->adapter->ebus_dev->ofdev.dev;
d1dea38d 2623 port->ofdev.dev.bus = &ibmebus_bus_type;
1acf2318 2624
d1dea38d 2625 sprintf(port->ofdev.dev.bus_id, "port%d", port_name_cnt++);
1acf2318
JBT		 2626 port->ofdev.dev.release = logical_port_release;
2627
2628 ret = of_device_register(&port->ofdev);
2629 if (ret) {
2630 ehea_error("failed to register device. ret=%d", ret);
2631 goto out;
2632 }
2633
2634 ret = device_create_file(&port->ofdev.dev, &dev_attr_log_port_id);
d1d25aab 2635 if (ret) {
1acf2318
JBT		 2636 ehea_error("failed to register attributes, ret=%d", ret);
2637 goto out_unreg_of_dev;
2638 }
e542aa6b 2639
d1dea38d
TK		 2640 ret = ehea_driver_sysfs_add(&port->ofdev.dev, &ehea_driver.driver);
2641 if (ret) {
2642 ehea_error("failed to register sysfs driver link");
2643 goto out_rem_dev_file;
2644 }
2645
1acf2318
JBT		 2646 return &port->ofdev.dev;
2647
d1dea38d
TK		 2648out_rem_dev_file:
2649 device_remove_file(&port->ofdev.dev, &dev_attr_log_port_id);
1acf2318
JBT		 2650out_unreg_of_dev:
2651 of_device_unregister(&port->ofdev);
2652out:
2653 return NULL;
2654}
2655
2656static void ehea_unregister_port(struct ehea_port *port)
2657{
d1dea38d 2658 ehea_driver_sysfs_remove(&port->ofdev.dev, &ehea_driver.driver);
1acf2318
JBT		 2659 device_remove_file(&port->ofdev.dev, &dev_attr_log_port_id);
2660 of_device_unregister(&port->ofdev);
2661}
2662
2663struct ehea_port *ehea_setup_single_port(struct ehea_adapter *adapter,
2664 u32 logical_port_id,
2665 struct device_node *dn)
2666{
2667 int ret;
2668 struct net_device *dev;
2669 struct ehea_port *port;
2670 struct device *port_dev;
2671 int jumbo;
2672
2673 /* allocate memory for the port structures */
2674 dev = alloc_etherdev(sizeof(struct ehea_port));
2675
2676 if (!dev) {
2677 ehea_error("no mem for net_device");
2678 ret = -ENOMEM;
2679 goto out_err;
2680 }
2681
2682 port = netdev_priv(dev);
2683
2684 sema_init(&port->port_lock, 1);
2685 port->state = EHEA_PORT_DOWN;
2686 port->sig_comp_iv = sq_entries / 10;
2687
2688 port->adapter = adapter;
2689 port->netdev = dev;
2690 port->logical_port_id = logical_port_id;
2691
2692 port->msg_enable = netif_msg_init(msg_level, EHEA_MSG_DEFAULT);
2693
2694 port->mc_list = kzalloc(sizeof(struct ehea_mc_list), GFP_KERNEL);
2695 if (!port->mc_list) {
2696 ret = -ENOMEM;
2697 goto out_free_ethdev;
2698 }
2699
2700 INIT_LIST_HEAD(&port->mc_list->list);
2701
2702 ret = ehea_sense_port_attr(port);
2703 if (ret)
2704 goto out_free_mc_list;
2705
2706 port_dev = ehea_register_port(port, dn);
2707 if (!port_dev)
2708 goto out_free_mc_list;
2709
2710 SET_NETDEV_DEV(dev, port_dev);
7a291083
JBT		 2711
2712 /* initialize net_device structure */
7a291083
JBT		 2713 memcpy(dev->dev_addr, &port->mac_addr, ETH_ALEN);
2714
2715 dev->open = ehea_open;
8d22c971
JBT		 2716#ifdef CONFIG_NET_POLL_CONTROLLER
2717 dev->poll_controller = ehea_netpoll;
2718#endif
7a291083
JBT		 2719 dev->stop = ehea_stop;
2720 dev->hard_start_xmit = ehea_start_xmit;
2721 dev->get_stats = ehea_get_stats;
2722 dev->set_multicast_list = ehea_set_multicast_list;
2723 dev->set_mac_address = ehea_set_mac_addr;
2724 dev->change_mtu = ehea_change_mtu;
2725 dev->vlan_rx_register = ehea_vlan_rx_register;
2726 dev->vlan_rx_add_vid = ehea_vlan_rx_add_vid;
2727 dev->vlan_rx_kill_vid = ehea_vlan_rx_kill_vid;
2728 dev->features = NETIF_F_SG | NETIF_F_FRAGLIST | NETIF_F_TSO
2729 | NETIF_F_HIGHDMA | NETIF_F_HW_CSUM | NETIF_F_HW_VLAN_TX
2730 | NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_FILTER
2731 | NETIF_F_LLTX;
2732 dev->tx_timeout = &ehea_tx_watchdog;
2733 dev->watchdog_timeo = EHEA_WATCH_DOG_TIMEOUT;
2734
c4028958 2735 INIT_WORK(&port->reset_task, ehea_reset_port);
7a291083 2736
f9e29228
TK		 2737 ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
2738 if (ret) {
2739 ret = -EIO;
2740 goto out_unreg_port;
2741 }
2742
7a291083
JBT		 2743 ehea_set_ethtool_ops(dev);
2744
2745 ret = register_netdev(dev);
2746 if (ret) {
2747 ehea_error("register_netdev failed. ret=%d", ret);
f9e29228 2748 goto out_dereg_bc;
7a291083
JBT		 2749 }
2750
d4dc4ec9
JBT		 2751 port->lro_max_aggr = lro_max_aggr;
2752
1acf2318 2753 ret = ehea_get_jumboframe_status(port, &jumbo);
e542aa6b 2754 if (ret)
1acf2318
JBT		 2755 ehea_error("failed determining jumbo frame status for %s",
2756 port->netdev->name);
2757
9c750b7d
TK		 2758 ehea_info("%s: Jumbo frames are %sabled", dev->name,
2759 jumbo == 1 ? "en" : "dis");
2760
44c82152
TK		 2761 adapter->active_ports++;
2762
1acf2318 2763 return port;
7a291083 2764
f9e29228
TK		 2765out_dereg_bc:
2766 ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
2767
1acf2318
JBT		 2768out_unreg_port:
2769 ehea_unregister_port(port);
2770
2771out_free_mc_list:
7a291083 2772 kfree(port->mc_list);
1acf2318
JBT		 2773
2774out_free_ethdev:
2775 free_netdev(dev);
2776
2777out_err:
2778 ehea_error("setting up logical port with id=%d failed, ret=%d",
2779 logical_port_id, ret);
2780 return NULL;
2781}
2782
2783static void ehea_shutdown_single_port(struct ehea_port *port)
2784{
2785 unregister_netdev(port->netdev);
2786 ehea_unregister_port(port);
f9e29228 2787 ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
1acf2318
JBT		 2788 kfree(port->mc_list);
2789 free_netdev(port->netdev);
44c82152 2790 port->adapter->active_ports--;
7a291083
JBT		 2791}
2792
2793static int ehea_setup_ports(struct ehea_adapter *adapter)
2794{
1acf2318
JBT		 2795 struct device_node *lhea_dn;
2796 struct device_node *eth_dn = NULL;
d1d25aab 2797
9f9a3b8a 2798 const u32 *dn_log_port_id;
1acf2318
JBT		 2799 int i = 0;
2800
2801 lhea_dn = adapter->ebus_dev->ofdev.node;
1eef4e04 2802 while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) {
e542aa6b 2803
40cd3a45 2804 dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no",
d1d25aab 2805 NULL);
1acf2318
JBT		 2806 if (!dn_log_port_id) {
2807 ehea_error("bad device node: eth_dn name=%s",
2808 eth_dn->full_name);
2809 continue;
2810 }
7a291083 2811
1211bb6d
TK		 2812 if (ehea_add_adapter_mr(adapter)) {
2813 ehea_error("creating MR failed");
2814 of_node_put(eth_dn);
2815 return -EIO;
2816 }
2817
1acf2318
JBT		 2818 adapter->port[i] = ehea_setup_single_port(adapter,
2819 *dn_log_port_id,
2820 eth_dn);
7a291083 2821 if (adapter->port[i])
1acf2318 2822 ehea_info("%s -> logical port id #%d",
e542aa6b 2823 adapter->port[i]->netdev->name,
1acf2318 2824 *dn_log_port_id);
1211bb6d
TK		 2825 else
2826 ehea_remove_adapter_mr(adapter);
2827
1acf2318 2828 i++;
1eef4e04 2829 };
7a291083 2830
1211bb6d 2831 return 0;
1acf2318
JBT		 2832}
2833
e542aa6b
JBT		 2834static struct device_node *ehea_get_eth_dn(struct ehea_adapter *adapter,
2835 u32 logical_port_id)
1acf2318
JBT		 2836{
2837 struct device_node *lhea_dn;
2838 struct device_node *eth_dn = NULL;
9f9a3b8a 2839 const u32 *dn_log_port_id;
1acf2318
JBT		 2840
2841 lhea_dn = adapter->ebus_dev->ofdev.node;
1eef4e04 2842 while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) {
e542aa6b 2843
40cd3a45 2844 dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no",
d1d25aab 2845 NULL);
1acf2318
JBT		 2846 if (dn_log_port_id)
2847 if (*dn_log_port_id == logical_port_id)
2848 return eth_dn;
1eef4e04 2849 };
1acf2318
JBT		 2850
2851 return NULL;
2852}
2853
2854static ssize_t ehea_probe_port(struct device *dev,
2855 struct device_attribute *attr,
2856 const char *buf, size_t count)
2857{
2858 struct ehea_adapter *adapter = dev->driver_data;
2859 struct ehea_port *port;
2860 struct device_node *eth_dn = NULL;
2861 int i;
2862
2863 u32 logical_port_id;
2864
a8e34fda 2865 sscanf(buf, "%d", &logical_port_id);
1acf2318
JBT		 2866
2867 port = ehea_get_port(adapter, logical_port_id);
2868
2869 if (port) {
2870 ehea_info("adding port with logical port id=%d failed. port "
2871 "already configured as %s.", logical_port_id,
2872 port->netdev->name);
2873 return -EINVAL;
7a291083 2874 }
e542aa6b 2875
1acf2318 2876 eth_dn = ehea_get_eth_dn(adapter, logical_port_id);
7a291083 2877
1acf2318
JBT		 2878 if (!eth_dn) {
2879 ehea_info("no logical port with id %d found", logical_port_id);
2880 return -EINVAL;
2881 }
e542aa6b 2882
1211bb6d
TK		 2883 if (ehea_add_adapter_mr(adapter)) {
2884 ehea_error("creating MR failed");
2885 return -EIO;
2886 }
2887
1acf2318 2888 port = ehea_setup_single_port(adapter, logical_port_id, eth_dn);
7a291083 2889
1eef4e04
JBT		 2890 of_node_put(eth_dn);
2891
1acf2318
JBT		 2892 if (port) {
2893 for (i=0; i < EHEA_MAX_PORTS; i++)
2894 if (!adapter->port[i]) {
2895 adapter->port[i] = port;
2896 break;
2897 }
7a291083 2898
1acf2318
JBT		 2899 ehea_info("added %s (logical port id=%d)", port->netdev->name,
2900 logical_port_id);
1211bb6d
TK		 2901 } else {
2902 ehea_remove_adapter_mr(adapter);
e542aa6b 2903 return -EIO;
1211bb6d 2904 }
7a291083 2905
1acf2318
JBT		 2906 return (ssize_t) count;
2907}
2908
2909static ssize_t ehea_remove_port(struct device *dev,
2910 struct device_attribute *attr,
2911 const char *buf, size_t count)
2912{
2913 struct ehea_adapter *adapter = dev->driver_data;
2914 struct ehea_port *port;
2915 int i;
2916 u32 logical_port_id;
2917
a8e34fda 2918 sscanf(buf, "%d", &logical_port_id);
1acf2318
JBT		 2919
2920 port = ehea_get_port(adapter, logical_port_id);
2921
2922 if (port) {
2923 ehea_info("removed %s (logical port id=%d)", port->netdev->name,
2924 logical_port_id);
2925
2926 ehea_shutdown_single_port(port);
2927
2928 for (i=0; i < EHEA_MAX_PORTS; i++)
2929 if (adapter->port[i] == port) {
2930 adapter->port[i] = NULL;
2931 break;
2932 }
2933 } else {
2934 ehea_error("removing port with logical port id=%d failed. port "
2935 "not configured.", logical_port_id);
2936 return -EINVAL;
2937 }
2938
1211bb6d
TK		 2939 ehea_remove_adapter_mr(adapter);
2940
1acf2318
JBT		 2941 return (ssize_t) count;
2942}
2943
2944static DEVICE_ATTR(probe_port, S_IWUSR, NULL, ehea_probe_port);
2945static DEVICE_ATTR(remove_port, S_IWUSR, NULL, ehea_remove_port);
2946
2947int ehea_create_device_sysfs(struct ibmebus_dev *dev)
2948{
2949 int ret = device_create_file(&dev->ofdev.dev, &dev_attr_probe_port);
2950 if (ret)
2951 goto out;
2952
2953 ret = device_create_file(&dev->ofdev.dev, &dev_attr_remove_port);
2954out:
7a291083
JBT		 2955 return ret;
2956}
2957
1acf2318
JBT		 2958void ehea_remove_device_sysfs(struct ibmebus_dev *dev)
2959{
2960 device_remove_file(&dev->ofdev.dev, &dev_attr_probe_port);
2961 device_remove_file(&dev->ofdev.dev, &dev_attr_remove_port);
2962}
2963
2964static int __devinit ehea_probe_adapter(struct ibmebus_dev *dev,
2965 const struct of_device_id *id)
7a291083
JBT		 2966{
2967 struct ehea_adapter *adapter;
9f9a3b8a 2968 const u64 *adapter_handle;
7a291083
JBT		 2969 int ret;
2970
1eef4e04
JBT		 2971 if (!dev || !dev->ofdev.node) {
2972 ehea_error("Invalid ibmebus device probed");
2973 return -EINVAL;
2974 }
2975
7a291083
JBT		 2976 adapter = kzalloc(sizeof(*adapter), GFP_KERNEL);
2977 if (!adapter) {
2978 ret = -ENOMEM;
2979 dev_err(&dev->ofdev.dev, "no mem for ehea_adapter\n");
2980 goto out;
2981 }
2982
44c82152
TK		 2983 list_add(&adapter->list, &adapter_list);
2984
1acf2318
JBT		 2985 adapter->ebus_dev = dev;
2986
40cd3a45 2987 adapter_handle = of_get_property(dev->ofdev.node, "ibm,hea-handle",
d1d25aab 2988 NULL);
061bf3cd
TK		 2989 if (adapter_handle)
2990 adapter->handle = *adapter_handle;
2991
2992 if (!adapter->handle) {
7a291083
JBT		 2993 dev_err(&dev->ofdev.dev, "failed getting handle for adapter"
2994 " '%s'\n", dev->ofdev.node->full_name);
2995 ret = -ENODEV;
2996 goto out_free_ad;
2997 }
2998
7a291083
JBT		 2999 adapter->pd = EHEA_PD_ID;
3000
3001 dev->ofdev.dev.driver_data = adapter;
3002
7a291083
JBT		 3003
3004 /* initialize adapter and ports */
3005 /* get adapter properties */
3006 ret = ehea_sense_adapter_attr(adapter);
3007 if (ret) {
3008 dev_err(&dev->ofdev.dev, "sense_adapter_attr failed: %d", ret);
1211bb6d 3009 goto out_free_ad;
7a291083 3010 }
7a291083
JBT		 3011
3012 adapter->neq = ehea_create_eq(adapter,
3013 EHEA_NEQ, EHEA_MAX_ENTRIES_EQ, 1);
3014 if (!adapter->neq) {
1eef4e04 3015 ret = -EIO;
7a291083 3016 dev_err(&dev->ofdev.dev, "NEQ creation failed");
1211bb6d 3017 goto out_free_ad;
7a291083
JBT		 3018 }
3019
3020 tasklet_init(&adapter->neq_tasklet, ehea_neq_tasklet,
3021 (unsigned long)adapter);
3022
3023 ret = ibmebus_request_irq(NULL, adapter->neq->attr.ist1,
38515e90 3024 ehea_interrupt_neq, IRQF_DISABLED,
7a291083
JBT		 3025 "ehea_neq", adapter);
3026 if (ret) {
3027 dev_err(&dev->ofdev.dev, "requesting NEQ IRQ failed");
3028 goto out_kill_eq;
3029 }
3030
3031 adapter->ehea_wq = create_workqueue("ehea_wq");
1eef4e04
JBT		 3032 if (!adapter->ehea_wq) {
3033 ret = -EIO;
7a291083 3034 goto out_free_irq;
1eef4e04 3035 }
7a291083 3036
1eef4e04
JBT		 3037 ret = ehea_create_device_sysfs(dev);
3038 if (ret)
1acf2318
JBT		 3039 goto out_kill_wq;
3040
7a291083
JBT		 3041 ret = ehea_setup_ports(adapter);
3042 if (ret) {
3043 dev_err(&dev->ofdev.dev, "setup_ports failed");
1acf2318 3044 goto out_rem_dev_sysfs;
7a291083
JBT		 3045 }
3046
3047 ret = 0;
3048 goto out;
3049
1acf2318
JBT		 3050out_rem_dev_sysfs:
3051 ehea_remove_device_sysfs(dev);
3052
7a291083
JBT		 3053out_kill_wq:
3054 destroy_workqueue(adapter->ehea_wq);
3055
3056out_free_irq:
3057 ibmebus_free_irq(NULL, adapter->neq->attr.ist1, adapter);
3058
3059out_kill_eq:
3060 ehea_destroy_eq(adapter->neq);
3061
7a291083
JBT		 3062out_free_ad:
3063 kfree(adapter);
3064out:
3065 return ret;
3066}
3067
7a291083
JBT		 3068static int __devexit ehea_remove(struct ibmebus_dev *dev)
3069{
3070 struct ehea_adapter *adapter = dev->ofdev.dev.driver_data;
7a291083
JBT		 3071 int i;
3072
1acf2318 3073 for (i = 0; i < EHEA_MAX_PORTS; i++)
7a291083
JBT		 3074 if (adapter->port[i]) {
3075 ehea_shutdown_single_port(adapter->port[i]);
3076 adapter->port[i] = NULL;
3077 }
1acf2318
JBT		 3078
3079 ehea_remove_device_sysfs(dev);
3080
7a291083
JBT		 3081 destroy_workqueue(adapter->ehea_wq);
3082
3083 ibmebus_free_irq(NULL, adapter->neq->attr.ist1, adapter);
d4150a27 3084 tasklet_kill(&adapter->neq_tasklet);
7a291083
JBT		 3085
3086 ehea_destroy_eq(adapter->neq);
1211bb6d 3087 ehea_remove_adapter_mr(adapter);
44c82152
TK		 3088 list_del(&adapter->list);
3089
7a291083 3090 kfree(adapter);
44c82152 3091
7a291083
JBT		 3092 return 0;
3093}
3094
3095static int check_module_parm(void)
3096{
3097 int ret = 0;
3098
3099 if ((rq1_entries < EHEA_MIN_ENTRIES_QP) ||
3100 (rq1_entries > EHEA_MAX_ENTRIES_RQ1)) {
3101 ehea_info("Bad parameter: rq1_entries");
3102 ret = -EINVAL;
3103 }
3104 if ((rq2_entries < EHEA_MIN_ENTRIES_QP) ||
3105 (rq2_entries > EHEA_MAX_ENTRIES_RQ2)) {
3106 ehea_info("Bad parameter: rq2_entries");
3107 ret = -EINVAL;
3108 }
3109 if ((rq3_entries < EHEA_MIN_ENTRIES_QP) ||
3110 (rq3_entries > EHEA_MAX_ENTRIES_RQ3)) {
3111 ehea_info("Bad parameter: rq3_entries");
3112 ret = -EINVAL;
3113 }
3114 if ((sq_entries < EHEA_MIN_ENTRIES_QP) ||
3115 (sq_entries > EHEA_MAX_ENTRIES_SQ)) {
3116 ehea_info("Bad parameter: sq_entries");
3117 ret = -EINVAL;
3118 }
3119
3120 return ret;
3121}
3122
4c3ca4da
JBT		 3123static ssize_t ehea_show_capabilities(struct device_driver *drv,
3124 char *buf)
3125{
3126 return sprintf(buf, "%d", EHEA_CAPABILITIES);
3127}
3128
3129static DRIVER_ATTR(capabilities, S_IRUSR | S_IRGRP | S_IROTH,
3130 ehea_show_capabilities, NULL);
3131
7a291083
JBT		 3132int __init ehea_module_init(void)
3133{
3134 int ret;
3135
3136 printk(KERN_INFO "IBM eHEA ethernet device driver (Release %s)\n",
3137 DRV_VERSION);
3138
44c82152
TK		 3139 ehea_driver_wq = create_workqueue("ehea_driver_wq");
3140
3141 INIT_WORK(&ehea_rereg_mr_task, ehea_rereg_mrs);
3142
7a291083
JBT		 3143 ret = check_module_parm();
3144 if (ret)
3145 goto out;
44c82152
TK		 3146
3147 ret = ehea_create_busmap();
3148 if (ret)
3149 goto out;
3150
7a291083 3151 ret = ibmebus_register_driver(&ehea_driver);
4c3ca4da 3152 if (ret) {
7a291083 3153 ehea_error("failed registering eHEA device driver on ebus");
4c3ca4da
JBT		 3154 goto out;
3155 }
3156
3157 ret = driver_create_file(&ehea_driver.driver,
3158 &driver_attr_capabilities);
3159 if (ret) {
3160 ehea_error("failed to register capabilities attribute, ret=%d",
3161 ret);
3162 ibmebus_unregister_driver(&ehea_driver);
3163 goto out;
3164 }
7a291083
JBT		 3165
3166out:
3167 return ret;
3168}
3169
3170static void __exit ehea_module_exit(void)
3171{
f46f6ba9 3172 destroy_workqueue(ehea_driver_wq);
4c3ca4da 3173 driver_remove_file(&ehea_driver.driver, &driver_attr_capabilities);
7a291083 3174 ibmebus_unregister_driver(&ehea_driver);
44c82152 3175 ehea_destroy_busmap();
7a291083
JBT		 3176}
3177
3178module_init(ehea_module_init);
3179module_exit(ehea_module_exit);
Linux 6.x block layer and io_uring tree(s)