?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
Merge git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus
[wrt350n-kernel.git] / drivers / net / ehea / ehea_main.c
blob21af674b764e402e4d0f6ceed6d6df54278d0f15
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 <linux/notifier.h>
37 #include <linux/reboot.h>
38 #include <asm/kexec.h>
39
40 #include <net/ip.h>
41
42 #include "ehea.h"
43 #include "ehea_qmr.h"
44 #include "ehea_phyp.h"
45
46
47 MODULE_LICENSE("GPL");
48 MODULE_AUTHOR("Christoph Raisch <raisch@de.ibm.com>");
49 MODULE_DESCRIPTION("IBM eServer HEA Driver");
50 MODULE_VERSION(DRV_VERSION);
51
52
53 static int msg_level = -1;
54 static int rq1_entries = EHEA_DEF_ENTRIES_RQ1;
55 static int rq2_entries = EHEA_DEF_ENTRIES_RQ2;
56 static int rq3_entries = EHEA_DEF_ENTRIES_RQ3;
57 static int sq_entries = EHEA_DEF_ENTRIES_SQ;
58 static int use_mcs;
59 static int use_lro;
60 static int lro_max_aggr = EHEA_LRO_MAX_AGGR;
61 static int num_tx_qps = EHEA_NUM_TX_QP;
62 static int prop_carrier_state;
63
64 module_param(msg_level, int, 0);
65 module_param(rq1_entries, int, 0);
66 module_param(rq2_entries, int, 0);
67 module_param(rq3_entries, int, 0);
68 module_param(sq_entries, int, 0);
69 module_param(prop_carrier_state, int, 0);
70 module_param(use_mcs, int, 0);
71 module_param(use_lro, int, 0);
72 module_param(lro_max_aggr, int, 0);
73 module_param(num_tx_qps, int, 0);
74
75 MODULE_PARM_DESC(num_tx_qps, "Number of TX-QPS");
76 MODULE_PARM_DESC(msg_level, "msg_level");
77 MODULE_PARM_DESC(prop_carrier_state, "Propagate carrier state of physical "
78 "port to stack. 1:yes, 0:no. Default = 0 ");
79 MODULE_PARM_DESC(rq3_entries, "Number of entries for Receive Queue 3 "
80 "[2^x - 1], x = [6..14]. Default = "
81 __MODULE_STRING(EHEA_DEF_ENTRIES_RQ3) ")");
82 MODULE_PARM_DESC(rq2_entries, "Number of entries for Receive Queue 2 "
83 "[2^x - 1], x = [6..14]. Default = "
84 __MODULE_STRING(EHEA_DEF_ENTRIES_RQ2) ")");
85 MODULE_PARM_DESC(rq1_entries, "Number of entries for Receive Queue 1 "
86 "[2^x - 1], x = [6..14]. Default = "
87 __MODULE_STRING(EHEA_DEF_ENTRIES_RQ1) ")");
88 MODULE_PARM_DESC(sq_entries, " Number of entries for the Send Queue "
89 "[2^x - 1], x = [6..14]. Default = "
90 __MODULE_STRING(EHEA_DEF_ENTRIES_SQ) ")");
91 MODULE_PARM_DESC(use_mcs, " 0:NAPI, 1:Multiple receive queues, Default = 0 ");
92
93 MODULE_PARM_DESC(lro_max_aggr, " LRO: Max packets to be aggregated. Default = "
94 __MODULE_STRING(EHEA_LRO_MAX_AGGR));
95 MODULE_PARM_DESC(use_lro, " Large Receive Offload, 1: enable, 0: disable, "
96 "Default = 0");
97
98 static int port_name_cnt;
99 static LIST_HEAD(adapter_list);
100 u64 ehea_driver_flags;
101 struct work_struct ehea_rereg_mr_task;
102 struct semaphore dlpar_mem_lock;
103 struct ehea_fw_handle_array ehea_fw_handles;
104 struct ehea_bcmc_reg_array ehea_bcmc_regs;
105
106
107 static int __devinit ehea_probe_adapter(struct of_device *dev,
108 const struct of_device_id *id);
109
110 static int __devexit ehea_remove(struct of_device *dev);
111
112 static struct of_device_id ehea_device_table[] = {
113 {
114 .name = "lhea",
115 .compatible = "IBM,lhea",
116 },
117 {},
118 };
119
120 static struct of_platform_driver ehea_driver = {
121 .name = "ehea",
122 .match_table = ehea_device_table,
123 .probe = ehea_probe_adapter,
124 .remove = ehea_remove,
125 };
126
127 void ehea_dump(void *adr, int len, char *msg)
128 {
129 int x;
130 unsigned char *deb = adr;
131 for (x = 0; x < len; x += 16) {
132 printk(DRV_NAME " %s adr=%p ofs=%04x %016lx %016lx\n", msg,
133 deb, x, *((u64 *)&deb[0]), *((u64 *)&deb[8]));
134 deb += 16;
135 }
136 }
137
138 static void ehea_update_firmware_handles(void)
139 {
140 struct ehea_fw_handle_entry *arr = NULL;
141 struct ehea_adapter *adapter;
142 int num_adapters = 0;
143 int num_ports = 0;
144 int num_portres = 0;
145 int i = 0;
146 int num_fw_handles, k, l;
147
148 /* Determine number of handles */
149 list_for_each_entry(adapter, &adapter_list, list) {
150 num_adapters++;
151
152 for (k = 0; k < EHEA_MAX_PORTS; k++) {
153 struct ehea_port *port = adapter->port[k];
154
155 if (!port || (port->state != EHEA_PORT_UP))
156 continue;
157
158 num_ports++;
159 num_portres += port->num_def_qps + port->num_add_tx_qps;
160 }
161 }
162
163 num_fw_handles = num_adapters * EHEA_NUM_ADAPTER_FW_HANDLES +
164 num_ports * EHEA_NUM_PORT_FW_HANDLES +
165 num_portres * EHEA_NUM_PORTRES_FW_HANDLES;
166
167 if (num_fw_handles) {
168 arr = kzalloc(num_fw_handles * sizeof(*arr), GFP_KERNEL);
169 if (!arr)
170 return; /* Keep the existing array */
171 } else
172 goto out_update;
173
174 list_for_each_entry(adapter, &adapter_list, list) {
175 for (k = 0; k < EHEA_MAX_PORTS; k++) {
176 struct ehea_port *port = adapter->port[k];
177
178 if (!port || (port->state != EHEA_PORT_UP))
179 continue;
180
181 for (l = 0;
182 l < port->num_def_qps + port->num_add_tx_qps;
183 l++) {
184 struct ehea_port_res *pr = &port->port_res[l];
185
186 arr[i].adh = adapter->handle;
187 arr[i++].fwh = pr->qp->fw_handle;
188 arr[i].adh = adapter->handle;
189 arr[i++].fwh = pr->send_cq->fw_handle;
190 arr[i].adh = adapter->handle;
191 arr[i++].fwh = pr->recv_cq->fw_handle;
192 arr[i].adh = adapter->handle;
193 arr[i++].fwh = pr->eq->fw_handle;
194 arr[i].adh = adapter->handle;
195 arr[i++].fwh = pr->send_mr.handle;
196 arr[i].adh = adapter->handle;
197 arr[i++].fwh = pr->recv_mr.handle;
198 }
199 arr[i].adh = adapter->handle;
200 arr[i++].fwh = port->qp_eq->fw_handle;
201 }
202
203 arr[i].adh = adapter->handle;
204 arr[i++].fwh = adapter->neq->fw_handle;
205
206 if (adapter->mr.handle) {
207 arr[i].adh = adapter->handle;
208 arr[i++].fwh = adapter->mr.handle;
209 }
210 }
211
212 out_update:
213 kfree(ehea_fw_handles.arr);
214 ehea_fw_handles.arr = arr;
215 ehea_fw_handles.num_entries = i;
216 }
217
218 static void ehea_update_bcmc_registrations(void)
219 {
220 struct ehea_bcmc_reg_entry *arr = NULL;
221 struct ehea_adapter *adapter;
222 struct ehea_mc_list *mc_entry;
223 int num_registrations = 0;
224 int i = 0;
225 int k;
226
227 /* Determine number of registrations */
228 list_for_each_entry(adapter, &adapter_list, list)
229 for (k = 0; k < EHEA_MAX_PORTS; k++) {
230 struct ehea_port *port = adapter->port[k];
231
232 if (!port || (port->state != EHEA_PORT_UP))
233 continue;
234
235 num_registrations += 2; /* Broadcast registrations */
236
237 list_for_each_entry(mc_entry, &port->mc_list->list,list)
238 num_registrations += 2;
239 }
240
241 if (num_registrations) {
242 arr = kzalloc(num_registrations * sizeof(*arr), GFP_KERNEL);
243 if (!arr)
244 return; /* Keep the existing array */
245 } else
246 goto out_update;
247
248 list_for_each_entry(adapter, &adapter_list, list) {
249 for (k = 0; k < EHEA_MAX_PORTS; k++) {
250 struct ehea_port *port = adapter->port[k];
251
252 if (!port || (port->state != EHEA_PORT_UP))
253 continue;
254
255 arr[i].adh = adapter->handle;
256 arr[i].port_id = port->logical_port_id;
257 arr[i].reg_type = EHEA_BCMC_BROADCAST |
258 EHEA_BCMC_UNTAGGED;
259 arr[i++].macaddr = port->mac_addr;
260
261 arr[i].adh = adapter->handle;
262 arr[i].port_id = port->logical_port_id;
263 arr[i].reg_type = EHEA_BCMC_BROADCAST |
264 EHEA_BCMC_VLANID_ALL;
265 arr[i++].macaddr = port->mac_addr;
266
267 list_for_each_entry(mc_entry,
268 &port->mc_list->list, list) {
269 arr[i].adh = adapter->handle;
270 arr[i].port_id = port->logical_port_id;
271 arr[i].reg_type = EHEA_BCMC_SCOPE_ALL |
272 EHEA_BCMC_MULTICAST |
273 EHEA_BCMC_UNTAGGED;
274 arr[i++].macaddr = mc_entry->macaddr;
275
276 arr[i].adh = adapter->handle;
277 arr[i].port_id = port->logical_port_id;
278 arr[i].reg_type = EHEA_BCMC_SCOPE_ALL |
279 EHEA_BCMC_MULTICAST |
280 EHEA_BCMC_VLANID_ALL;
281 arr[i++].macaddr = mc_entry->macaddr;
282 }
283 }
284 }
285
286 out_update:
287 kfree(ehea_bcmc_regs.arr);
288 ehea_bcmc_regs.arr = arr;
289 ehea_bcmc_regs.num_entries = i;
290 }
291
292 static struct net_device_stats *ehea_get_stats(struct net_device *dev)
293 {
294 struct ehea_port *port = netdev_priv(dev);
295 struct net_device_stats *stats = &port->stats;
296 struct hcp_ehea_port_cb2 *cb2;
297 u64 hret, rx_packets, tx_packets;
298 int i;
299
300 memset(stats, 0, sizeof(*stats));
301
302 cb2 = kzalloc(PAGE_SIZE, GFP_KERNEL);
303 if (!cb2) {
304 ehea_error("no mem for cb2");
305 goto out;
306 }
307
308 hret = ehea_h_query_ehea_port(port->adapter->handle,
309 port->logical_port_id,
310 H_PORT_CB2, H_PORT_CB2_ALL, cb2);
311 if (hret != H_SUCCESS) {
312 ehea_error("query_ehea_port failed");
313 goto out_herr;
314 }
315
316 if (netif_msg_hw(port))
317 ehea_dump(cb2, sizeof(*cb2), "net_device_stats");
318
319 rx_packets = 0;
320 for (i = 0; i < port->num_def_qps; i++)
321 rx_packets += port->port_res[i].rx_packets;
322
323 tx_packets = 0;
324 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
325 tx_packets += port->port_res[i].tx_packets;
326
327 stats->tx_packets = tx_packets;
328 stats->multicast = cb2->rxmcp;
329 stats->rx_errors = cb2->rxuerr;
330 stats->rx_bytes = cb2->rxo;
331 stats->tx_bytes = cb2->txo;
332 stats->rx_packets = rx_packets;
333
334 out_herr:
335 kfree(cb2);
336 out:
337 return stats;
338 }
339
340 static void ehea_refill_rq1(struct ehea_port_res *pr, int index, int nr_of_wqes)
341 {
342 struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
343 struct net_device *dev = pr->port->netdev;
344 int max_index_mask = pr->rq1_skba.len - 1;
345 int fill_wqes = pr->rq1_skba.os_skbs + nr_of_wqes;
346 int adder = 0;
347 int i;
348
349 pr->rq1_skba.os_skbs = 0;
350
351 if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) {
352 pr->rq1_skba.index = index;
353 pr->rq1_skba.os_skbs = fill_wqes;
354 return;
355 }
356
357 for (i = 0; i < fill_wqes; i++) {
358 if (!skb_arr_rq1[index]) {
359 skb_arr_rq1[index] = netdev_alloc_skb(dev,
360 EHEA_L_PKT_SIZE);
361 if (!skb_arr_rq1[index]) {
362 pr->rq1_skba.os_skbs = fill_wqes - i;
363 ehea_error("%s: no mem for skb/%d wqes filled",
364 dev->name, i);
365 break;
366 }
367 }
368 index--;
369 index &= max_index_mask;
370 adder++;
371 }
372
373 if (adder == 0)
374 return;
375
376 /* Ring doorbell */
377 ehea_update_rq1a(pr->qp, adder);
378 }
379
380 static int ehea_init_fill_rq1(struct ehea_port_res *pr, int nr_rq1a)
381 {
382 int ret = 0;
383 struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
384 struct net_device *dev = pr->port->netdev;
385 int i;
386
387 for (i = 0; i < pr->rq1_skba.len; i++) {
388 skb_arr_rq1[i] = netdev_alloc_skb(dev, EHEA_L_PKT_SIZE);
389 if (!skb_arr_rq1[i]) {
390 ehea_error("%s: no mem for skb/%d wqes filled",
391 dev->name, i);
392 ret = -ENOMEM;
393 goto out;
394 }
395 }
396 /* Ring doorbell */
397 ehea_update_rq1a(pr->qp, nr_rq1a);
398 out:
399 return ret;
400 }
401
402 static int ehea_refill_rq_def(struct ehea_port_res *pr,
403 struct ehea_q_skb_arr *q_skba, int rq_nr,
404 int num_wqes, int wqe_type, int packet_size)
405 {
406 struct net_device *dev = pr->port->netdev;
407 struct ehea_qp *qp = pr->qp;
408 struct sk_buff **skb_arr = q_skba->arr;
409 struct ehea_rwqe *rwqe;
410 int i, index, max_index_mask, fill_wqes;
411 int adder = 0;
412 int ret = 0;
413
414 fill_wqes = q_skba->os_skbs + num_wqes;
415 q_skba->os_skbs = 0;
416
417 if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) {
418 q_skba->os_skbs = fill_wqes;
419 return ret;
420 }
421
422 index = q_skba->index;
423 max_index_mask = q_skba->len - 1;
424 for (i = 0; i < fill_wqes; i++) {
425 u64 tmp_addr;
426 struct sk_buff *skb = netdev_alloc_skb(dev, packet_size);
427 if (!skb) {
428 ehea_error("%s: no mem for skb/%d wqes filled",
429 pr->port->netdev->name, i);
430 q_skba->os_skbs = fill_wqes - i;
431 ret = -ENOMEM;
432 break;
433 }
434 skb_reserve(skb, NET_IP_ALIGN);
435
436 skb_arr[index] = skb;
437 tmp_addr = ehea_map_vaddr(skb->data);
438 if (tmp_addr == -1) {
439 dev_kfree_skb(skb);
440 q_skba->os_skbs = fill_wqes - i;
441 ret = 0;
442 break;
443 }
444
445 rwqe = ehea_get_next_rwqe(qp, rq_nr);
446 rwqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, wqe_type)
447 | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, index);
448 rwqe->sg_list[0].l_key = pr->recv_mr.lkey;
449 rwqe->sg_list[0].vaddr = tmp_addr;
450 rwqe->sg_list[0].len = packet_size;
451 rwqe->data_segments = 1;
452
453 index++;
454 index &= max_index_mask;
455 adder++;
456 }
457
458 q_skba->index = index;
459 if (adder == 0)
460 goto out;
461
462 /* Ring doorbell */
463 iosync();
464 if (rq_nr == 2)
465 ehea_update_rq2a(pr->qp, adder);
466 else
467 ehea_update_rq3a(pr->qp, adder);
468 out:
469 return ret;
470 }
471
472
473 static int ehea_refill_rq2(struct ehea_port_res *pr, int nr_of_wqes)
474 {
475 return ehea_refill_rq_def(pr, &pr->rq2_skba, 2,
476 nr_of_wqes, EHEA_RWQE2_TYPE,
477 EHEA_RQ2_PKT_SIZE + NET_IP_ALIGN);
478 }
479
480
481 static int ehea_refill_rq3(struct ehea_port_res *pr, int nr_of_wqes)
482 {
483 return ehea_refill_rq_def(pr, &pr->rq3_skba, 3,
484 nr_of_wqes, EHEA_RWQE3_TYPE,
485 EHEA_MAX_PACKET_SIZE + NET_IP_ALIGN);
486 }
487
488 static inline int ehea_check_cqe(struct ehea_cqe *cqe, int *rq_num)
489 {
490 *rq_num = (cqe->type & EHEA_CQE_TYPE_RQ) >> 5;
491 if ((cqe->status & EHEA_CQE_STAT_ERR_MASK) == 0)
492 return 0;
493 if (((cqe->status & EHEA_CQE_STAT_ERR_TCP) != 0) &&
494 (cqe->header_length == 0))
495 return 0;
496 return -EINVAL;
497 }
498
499 static inline void ehea_fill_skb(struct net_device *dev,
500 struct sk_buff *skb, struct ehea_cqe *cqe)
501 {
502 int length = cqe->num_bytes_transfered - 4; /*remove CRC */
503
504 skb_put(skb, length);
505 skb->ip_summed = CHECKSUM_UNNECESSARY;
506 skb->protocol = eth_type_trans(skb, dev);
507 }
508
509 static inline struct sk_buff *get_skb_by_index(struct sk_buff **skb_array,
510 int arr_len,
511 struct ehea_cqe *cqe)
512 {
513 int skb_index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, cqe->wr_id);
514 struct sk_buff *skb;
515 void *pref;
516 int x;
517
518 x = skb_index + 1;
519 x &= (arr_len - 1);
520
521 pref = skb_array[x];
522 prefetchw(pref);
523 prefetchw(pref + EHEA_CACHE_LINE);
524
525 pref = (skb_array[x]->data);
526 prefetch(pref);
527 prefetch(pref + EHEA_CACHE_LINE);
528 prefetch(pref + EHEA_CACHE_LINE * 2);
529 prefetch(pref + EHEA_CACHE_LINE * 3);
530 skb = skb_array[skb_index];
531 skb_array[skb_index] = NULL;
532 return skb;
533 }
534
535 static inline struct sk_buff *get_skb_by_index_ll(struct sk_buff **skb_array,
536 int arr_len, int wqe_index)
537 {
538 struct sk_buff *skb;
539 void *pref;
540 int x;
541
542 x = wqe_index + 1;
543 x &= (arr_len - 1);
544
545 pref = skb_array[x];
546 prefetchw(pref);
547 prefetchw(pref + EHEA_CACHE_LINE);
548
549 pref = (skb_array[x]->data);
550 prefetchw(pref);
551 prefetchw(pref + EHEA_CACHE_LINE);
552
553 skb = skb_array[wqe_index];
554 skb_array[wqe_index] = NULL;
555 return skb;
556 }
557
558 static int ehea_treat_poll_error(struct ehea_port_res *pr, int rq,
559 struct ehea_cqe *cqe, int *processed_rq2,
560 int *processed_rq3)
561 {
562 struct sk_buff *skb;
563
564 if (cqe->status & EHEA_CQE_STAT_ERR_TCP)
565 pr->p_stats.err_tcp_cksum++;
566 if (cqe->status & EHEA_CQE_STAT_ERR_IP)
567 pr->p_stats.err_ip_cksum++;
568 if (cqe->status & EHEA_CQE_STAT_ERR_CRC)
569 pr->p_stats.err_frame_crc++;
570
571 if (rq == 2) {
572 *processed_rq2 += 1;
573 skb = get_skb_by_index(pr->rq2_skba.arr, pr->rq2_skba.len, cqe);
574 dev_kfree_skb(skb);
575 } else if (rq == 3) {
576 *processed_rq3 += 1;
577 skb = get_skb_by_index(pr->rq3_skba.arr, pr->rq3_skba.len, cqe);
578 dev_kfree_skb(skb);
579 }
580
581 if (cqe->status & EHEA_CQE_STAT_FAT_ERR_MASK) {
582 if (netif_msg_rx_err(pr->port)) {
583 ehea_error("Critical receive error for QP %d. "
584 "Resetting port.", pr->qp->init_attr.qp_nr);
585 ehea_dump(cqe, sizeof(*cqe), "CQE");
586 }
587 schedule_work(&pr->port->reset_task);
588 return 1;
589 }
590
591 return 0;
592 }
593
594 static int get_skb_hdr(struct sk_buff *skb, void **iphdr,
595 void **tcph, u64 *hdr_flags, void *priv)
596 {
597 struct ehea_cqe *cqe = priv;
598 unsigned int ip_len;
599 struct iphdr *iph;
600
601 /* non tcp/udp packets */
602 if (!cqe->header_length)
603 return -1;
604
605 /* non tcp packet */
606 skb_reset_network_header(skb);
607 iph = ip_hdr(skb);
608 if (iph->protocol != IPPROTO_TCP)
609 return -1;
610
611 ip_len = ip_hdrlen(skb);
612 skb_set_transport_header(skb, ip_len);
613 *tcph = tcp_hdr(skb);
614
615 /* check if ip header and tcp header are complete */
616 if (iph->tot_len < ip_len + tcp_hdrlen(skb))
617 return -1;
618
619 *hdr_flags = LRO_IPV4 | LRO_TCP;
620 *iphdr = iph;
621
622 return 0;
623 }
624
625 static void ehea_proc_skb(struct ehea_port_res *pr, struct ehea_cqe *cqe,
626 struct sk_buff *skb)
627 {
628 int vlan_extracted = (cqe->status & EHEA_CQE_VLAN_TAG_XTRACT)
629 && pr->port->vgrp;
630
631 if (use_lro) {
632 if (vlan_extracted)
633 lro_vlan_hwaccel_receive_skb(&pr->lro_mgr, skb,
634 pr->port->vgrp,
635 cqe->vlan_tag,
636 cqe);
637 else
638 lro_receive_skb(&pr->lro_mgr, skb, cqe);
639 } else {
640 if (vlan_extracted)
641 vlan_hwaccel_receive_skb(skb, pr->port->vgrp,
642 cqe->vlan_tag);
643 else
644 netif_receive_skb(skb);
645 }
646 }
647
648 static int ehea_proc_rwqes(struct net_device *dev,
649 struct ehea_port_res *pr,
650 int budget)
651 {
652 struct ehea_port *port = pr->port;
653 struct ehea_qp *qp = pr->qp;
654 struct ehea_cqe *cqe;
655 struct sk_buff *skb;
656 struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
657 struct sk_buff **skb_arr_rq2 = pr->rq2_skba.arr;
658 struct sk_buff **skb_arr_rq3 = pr->rq3_skba.arr;
659 int skb_arr_rq1_len = pr->rq1_skba.len;
660 int skb_arr_rq2_len = pr->rq2_skba.len;
661 int skb_arr_rq3_len = pr->rq3_skba.len;
662 int processed, processed_rq1, processed_rq2, processed_rq3;
663 int wqe_index, last_wqe_index, rq, port_reset;
664
665 processed = processed_rq1 = processed_rq2 = processed_rq3 = 0;
666 last_wqe_index = 0;
667
668 cqe = ehea_poll_rq1(qp, &wqe_index);
669 while ((processed < budget) && cqe) {
670 ehea_inc_rq1(qp);
671 processed_rq1++;
672 processed++;
673 if (netif_msg_rx_status(port))
674 ehea_dump(cqe, sizeof(*cqe), "CQE");
675
676 last_wqe_index = wqe_index;
677 rmb();
678 if (!ehea_check_cqe(cqe, &rq)) {
679 if (rq == 1) {
680 /* LL RQ1 */
681 skb = get_skb_by_index_ll(skb_arr_rq1,
682 skb_arr_rq1_len,
683 wqe_index);
684 if (unlikely(!skb)) {
685 if (netif_msg_rx_err(port))
686 ehea_error("LL rq1: skb=NULL");
687
688 skb = netdev_alloc_skb(dev,
689 EHEA_L_PKT_SIZE);
690 if (!skb)
691 break;
692 }
693 skb_copy_to_linear_data(skb, ((char *)cqe) + 64,
694 cqe->num_bytes_transfered - 4);
695 ehea_fill_skb(dev, skb, cqe);
696 } else if (rq == 2) {
697 /* RQ2 */
698 skb = get_skb_by_index(skb_arr_rq2,
699 skb_arr_rq2_len, cqe);
700 if (unlikely(!skb)) {
701 if (netif_msg_rx_err(port))
702 ehea_error("rq2: skb=NULL");
703 break;
704 }
705 ehea_fill_skb(dev, skb, cqe);
706 processed_rq2++;
707 } else {
708 /* RQ3 */
709 skb = get_skb_by_index(skb_arr_rq3,
710 skb_arr_rq3_len, cqe);
711 if (unlikely(!skb)) {
712 if (netif_msg_rx_err(port))
713 ehea_error("rq3: skb=NULL");
714 break;
715 }
716 ehea_fill_skb(dev, skb, cqe);
717 processed_rq3++;
718 }
719
720 ehea_proc_skb(pr, cqe, skb);
721 dev->last_rx = jiffies;
722 } else {
723 pr->p_stats.poll_receive_errors++;
724 port_reset = ehea_treat_poll_error(pr, rq, cqe,
725 &processed_rq2,
726 &processed_rq3);
727 if (port_reset)
728 break;
729 }
730 cqe = ehea_poll_rq1(qp, &wqe_index);
731 }
732 if (use_lro)
733 lro_flush_all(&pr->lro_mgr);
734
735 pr->rx_packets += processed;
736
737 ehea_refill_rq1(pr, last_wqe_index, processed_rq1);
738 ehea_refill_rq2(pr, processed_rq2);
739 ehea_refill_rq3(pr, processed_rq3);
740
741 return processed;
742 }
743
744 static struct ehea_cqe *ehea_proc_cqes(struct ehea_port_res *pr, int my_quota)
745 {
746 struct sk_buff *skb;
747 struct ehea_cq *send_cq = pr->send_cq;
748 struct ehea_cqe *cqe;
749 int quota = my_quota;
750 int cqe_counter = 0;
751 int swqe_av = 0;
752 int index;
753 unsigned long flags;
754
755 cqe = ehea_poll_cq(send_cq);
756 while (cqe && (quota > 0)) {
757 ehea_inc_cq(send_cq);
758
759 cqe_counter++;
760 rmb();
761 if (cqe->status & EHEA_CQE_STAT_ERR_MASK) {
762 ehea_error("Send Completion Error: Resetting port");
763 if (netif_msg_tx_err(pr->port))
764 ehea_dump(cqe, sizeof(*cqe), "Send CQE");
765 schedule_work(&pr->port->reset_task);
766 break;
767 }
768
769 if (netif_msg_tx_done(pr->port))
770 ehea_dump(cqe, sizeof(*cqe), "CQE");
771
772 if (likely(EHEA_BMASK_GET(EHEA_WR_ID_TYPE, cqe->wr_id)
773 == EHEA_SWQE2_TYPE)) {
774
775 index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, cqe->wr_id);
776 skb = pr->sq_skba.arr[index];
777 dev_kfree_skb(skb);
778 pr->sq_skba.arr[index] = NULL;
779 }
780
781 swqe_av += EHEA_BMASK_GET(EHEA_WR_ID_REFILL, cqe->wr_id);
782 quota--;
783
784 cqe = ehea_poll_cq(send_cq);
785 };
786
787 ehea_update_feca(send_cq, cqe_counter);
788 atomic_add(swqe_av, &pr->swqe_avail);
789
790 spin_lock_irqsave(&pr->netif_queue, flags);
791
792 if (pr->queue_stopped && (atomic_read(&pr->swqe_avail)
793 >= pr->swqe_refill_th)) {
794 netif_wake_queue(pr->port->netdev);
795 pr->queue_stopped = 0;
796 }
797 spin_unlock_irqrestore(&pr->netif_queue, flags);
798
799 return cqe;
800 }
801
802 #define EHEA_NAPI_POLL_NUM_BEFORE_IRQ 16
803 #define EHEA_POLL_MAX_CQES 65535
804
805 static int ehea_poll(struct napi_struct *napi, int budget)
806 {
807 struct ehea_port_res *pr = container_of(napi, struct ehea_port_res,
808 napi);
809 struct net_device *dev = pr->port->netdev;
810 struct ehea_cqe *cqe;
811 struct ehea_cqe *cqe_skb = NULL;
812 int force_irq, wqe_index;
813 int rx = 0;
814
815 force_irq = (pr->poll_counter > EHEA_NAPI_POLL_NUM_BEFORE_IRQ);
816 cqe_skb = ehea_proc_cqes(pr, EHEA_POLL_MAX_CQES);
817
818 if (!force_irq)
819 rx += ehea_proc_rwqes(dev, pr, budget - rx);
820
821 while ((rx != budget) || force_irq) {
822 pr->poll_counter = 0;
823 force_irq = 0;
824 netif_rx_complete(dev, napi);
825 ehea_reset_cq_ep(pr->recv_cq);
826 ehea_reset_cq_ep(pr->send_cq);
827 ehea_reset_cq_n1(pr->recv_cq);
828 ehea_reset_cq_n1(pr->send_cq);
829 cqe = ehea_poll_rq1(pr->qp, &wqe_index);
830 cqe_skb = ehea_poll_cq(pr->send_cq);
831
832 if (!cqe && !cqe_skb)
833 return rx;
834
835 if (!netif_rx_reschedule(dev, napi))
836 return rx;
837
838 cqe_skb = ehea_proc_cqes(pr, EHEA_POLL_MAX_CQES);
839 rx += ehea_proc_rwqes(dev, pr, budget - rx);
840 }
841
842 pr->poll_counter++;
843 return rx;
844 }
845
846 #ifdef CONFIG_NET_POLL_CONTROLLER
847 static void ehea_netpoll(struct net_device *dev)
848 {
849 struct ehea_port *port = netdev_priv(dev);
850 int i;
851
852 for (i = 0; i < port->num_def_qps; i++)
853 netif_rx_schedule(dev, &port->port_res[i].napi);
854 }
855 #endif
856
857 static irqreturn_t ehea_recv_irq_handler(int irq, void *param)
858 {
859 struct ehea_port_res *pr = param;
860
861 netif_rx_schedule(pr->port->netdev, &pr->napi);
862
863 return IRQ_HANDLED;
864 }
865
866 static irqreturn_t ehea_qp_aff_irq_handler(int irq, void *param)
867 {
868 struct ehea_port *port = param;
869 struct ehea_eqe *eqe;
870 struct ehea_qp *qp;
871 u32 qp_token;
872
873 eqe = ehea_poll_eq(port->qp_eq);
874
875 while (eqe) {
876 qp_token = EHEA_BMASK_GET(EHEA_EQE_QP_TOKEN, eqe->entry);
877 ehea_error("QP aff_err: entry=0x%lx, token=0x%x",
878 eqe->entry, qp_token);
879
880 qp = port->port_res[qp_token].qp;
881 ehea_error_data(port->adapter, qp->fw_handle);
882 eqe = ehea_poll_eq(port->qp_eq);
883 }
884
885 schedule_work(&port->reset_task);
886
887 return IRQ_HANDLED;
888 }
889
890 static struct ehea_port *ehea_get_port(struct ehea_adapter *adapter,
891 int logical_port)
892 {
893 int i;
894
895 for (i = 0; i < EHEA_MAX_PORTS; i++)
896 if (adapter->port[i])
897 if (adapter->port[i]->logical_port_id == logical_port)
898 return adapter->port[i];
899 return NULL;
900 }
901
902 int ehea_sense_port_attr(struct ehea_port *port)
903 {
904 int ret;
905 u64 hret;
906 struct hcp_ehea_port_cb0 *cb0;
907
908 /* may be called via ehea_neq_tasklet() */
909 cb0 = kzalloc(PAGE_SIZE, GFP_ATOMIC);
910 if (!cb0) {
911 ehea_error("no mem for cb0");
912 ret = -ENOMEM;
913 goto out;
914 }
915
916 hret = ehea_h_query_ehea_port(port->adapter->handle,
917 port->logical_port_id, H_PORT_CB0,
918 EHEA_BMASK_SET(H_PORT_CB0_ALL, 0xFFFF),
919 cb0);
920 if (hret != H_SUCCESS) {
921 ret = -EIO;
922 goto out_free;
923 }
924
925 /* MAC address */
926 port->mac_addr = cb0->port_mac_addr << 16;
927
928 if (!is_valid_ether_addr((u8 *)&port->mac_addr)) {
929 ret = -EADDRNOTAVAIL;
930 goto out_free;
931 }
932
933 /* Port speed */
934 switch (cb0->port_speed) {
935 case H_SPEED_10M_H:
936 port->port_speed = EHEA_SPEED_10M;
937 port->full_duplex = 0;
938 break;
939 case H_SPEED_10M_F:
940 port->port_speed = EHEA_SPEED_10M;
941 port->full_duplex = 1;
942 break;
943 case H_SPEED_100M_H:
944 port->port_speed = EHEA_SPEED_100M;
945 port->full_duplex = 0;
946 break;
947 case H_SPEED_100M_F:
948 port->port_speed = EHEA_SPEED_100M;
949 port->full_duplex = 1;
950 break;
951 case H_SPEED_1G_F:
952 port->port_speed = EHEA_SPEED_1G;
953 port->full_duplex = 1;
954 break;
955 case H_SPEED_10G_F:
956 port->port_speed = EHEA_SPEED_10G;
957 port->full_duplex = 1;
958 break;
959 default:
960 port->port_speed = 0;
961 port->full_duplex = 0;
962 break;
963 }
964
965 port->autoneg = 1;
966 port->num_mcs = cb0->num_default_qps;
967
968 /* Number of default QPs */
969 if (use_mcs)
970 port->num_def_qps = cb0->num_default_qps;
971 else
972 port->num_def_qps = 1;
973
974 if (!port->num_def_qps) {
975 ret = -EINVAL;
976 goto out_free;
977 }
978
979 port->num_tx_qps = num_tx_qps;
980
981 if (port->num_def_qps >= port->num_tx_qps)
982 port->num_add_tx_qps = 0;
983 else
984 port->num_add_tx_qps = port->num_tx_qps - port->num_def_qps;
985
986 ret = 0;
987 out_free:
988 if (ret || netif_msg_probe(port))
989 ehea_dump(cb0, sizeof(*cb0), "ehea_sense_port_attr");
990 kfree(cb0);
991 out:
992 return ret;
993 }
994
995 int ehea_set_portspeed(struct ehea_port *port, u32 port_speed)
996 {
997 struct hcp_ehea_port_cb4 *cb4;
998 u64 hret;
999 int ret = 0;
1000
1001 cb4 = kzalloc(PAGE_SIZE, GFP_KERNEL);
1002 if (!cb4) {
1003 ehea_error("no mem for cb4");
1004 ret = -ENOMEM;
1005 goto out;
1006 }
1007
1008 cb4->port_speed = port_speed;
1009
1010 netif_carrier_off(port->netdev);
1011
1012 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1013 port->logical_port_id,
1014 H_PORT_CB4, H_PORT_CB4_SPEED, cb4);
1015 if (hret == H_SUCCESS) {
1016 port->autoneg = port_speed == EHEA_SPEED_AUTONEG ? 1 : 0;
1017
1018 hret = ehea_h_query_ehea_port(port->adapter->handle,
1019 port->logical_port_id,
1020 H_PORT_CB4, H_PORT_CB4_SPEED,
1021 cb4);
1022 if (hret == H_SUCCESS) {
1023 switch (cb4->port_speed) {
1024 case H_SPEED_10M_H:
1025 port->port_speed = EHEA_SPEED_10M;
1026 port->full_duplex = 0;
1027 break;
1028 case H_SPEED_10M_F:
1029 port->port_speed = EHEA_SPEED_10M;
1030 port->full_duplex = 1;
1031 break;
1032 case H_SPEED_100M_H:
1033 port->port_speed = EHEA_SPEED_100M;
1034 port->full_duplex = 0;
1035 break;
1036 case H_SPEED_100M_F:
1037 port->port_speed = EHEA_SPEED_100M;
1038 port->full_duplex = 1;
1039 break;
1040 case H_SPEED_1G_F:
1041 port->port_speed = EHEA_SPEED_1G;
1042 port->full_duplex = 1;
1043 break;
1044 case H_SPEED_10G_F:
1045 port->port_speed = EHEA_SPEED_10G;
1046 port->full_duplex = 1;
1047 break;
1048 default:
1049 port->port_speed = 0;
1050 port->full_duplex = 0;
1051 break;
1052 }
1053 } else {
1054 ehea_error("Failed sensing port speed");
1055 ret = -EIO;
1056 }
1057 } else {
1058 if (hret == H_AUTHORITY) {
1059 ehea_info("Hypervisor denied setting port speed");
1060 ret = -EPERM;
1061 } else {
1062 ret = -EIO;
1063 ehea_error("Failed setting port speed");
1064 }
1065 }
1066 if (!prop_carrier_state || (port->phy_link == EHEA_PHY_LINK_UP))
1067 netif_carrier_on(port->netdev);
1068
1069 kfree(cb4);
1070 out:
1071 return ret;
1072 }
1073
1074 static void ehea_parse_eqe(struct ehea_adapter *adapter, u64 eqe)
1075 {
1076 int ret;
1077 u8 ec;
1078 u8 portnum;
1079 struct ehea_port *port;
1080
1081 ec = EHEA_BMASK_GET(NEQE_EVENT_CODE, eqe);
1082 portnum = EHEA_BMASK_GET(NEQE_PORTNUM, eqe);
1083 port = ehea_get_port(adapter, portnum);
1084
1085 switch (ec) {
1086 case EHEA_EC_PORTSTATE_CHG: /* port state change */
1087
1088 if (!port) {
1089 ehea_error("unknown portnum %x", portnum);
1090 break;
1091 }
1092
1093 if (EHEA_BMASK_GET(NEQE_PORT_UP, eqe)) {
1094 if (!netif_carrier_ok(port->netdev)) {
1095 ret = ehea_sense_port_attr(port);
1096 if (ret) {
1097 ehea_error("failed resensing port "
1098 "attributes");
1099 break;
1100 }
1101
1102 if (netif_msg_link(port))
1103 ehea_info("%s: Logical port up: %dMbps "
1104 "%s Duplex",
1105 port->netdev->name,
1106 port->port_speed,
1107 port->full_duplex ==
1108 1 ? "Full" : "Half");
1109
1110 netif_carrier_on(port->netdev);
1111 netif_wake_queue(port->netdev);
1112 }
1113 } else
1114 if (netif_carrier_ok(port->netdev)) {
1115 if (netif_msg_link(port))
1116 ehea_info("%s: Logical port down",
1117 port->netdev->name);
1118 netif_carrier_off(port->netdev);
1119 netif_stop_queue(port->netdev);
1120 }
1121
1122 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PORT_UP, eqe)) {
1123 port->phy_link = EHEA_PHY_LINK_UP;
1124 if (netif_msg_link(port))
1125 ehea_info("%s: Physical port up",
1126 port->netdev->name);
1127 if (prop_carrier_state)
1128 netif_carrier_on(port->netdev);
1129 } else {
1130 port->phy_link = EHEA_PHY_LINK_DOWN;
1131 if (netif_msg_link(port))
1132 ehea_info("%s: Physical port down",
1133 port->netdev->name);
1134 if (prop_carrier_state)
1135 netif_carrier_off(port->netdev);
1136 }
1137
1138 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PRIMARY, eqe))
1139 ehea_info("External switch port is primary port");
1140 else
1141 ehea_info("External switch port is backup port");
1142
1143 break;
1144 case EHEA_EC_ADAPTER_MALFUNC:
1145 ehea_error("Adapter malfunction");
1146 break;
1147 case EHEA_EC_PORT_MALFUNC:
1148 ehea_info("Port malfunction: Device: %s", port->netdev->name);
1149 netif_carrier_off(port->netdev);
1150 netif_stop_queue(port->netdev);
1151 break;
1152 default:
1153 ehea_error("unknown event code %x, eqe=0x%lX", ec, eqe);
1154 break;
1155 }
1156 }
1157
1158 static void ehea_neq_tasklet(unsigned long data)
1159 {
1160 struct ehea_adapter *adapter = (struct ehea_adapter *)data;
1161 struct ehea_eqe *eqe;
1162 u64 event_mask;
1163
1164 eqe = ehea_poll_eq(adapter->neq);
1165 ehea_debug("eqe=%p", eqe);
1166
1167 while (eqe) {
1168 ehea_debug("*eqe=%lx", eqe->entry);
1169 ehea_parse_eqe(adapter, eqe->entry);
1170 eqe = ehea_poll_eq(adapter->neq);
1171 ehea_debug("next eqe=%p", eqe);
1172 }
1173
1174 event_mask = EHEA_BMASK_SET(NELR_PORTSTATE_CHG, 1)
1175 | EHEA_BMASK_SET(NELR_ADAPTER_MALFUNC, 1)
1176 | EHEA_BMASK_SET(NELR_PORT_MALFUNC, 1);
1177
1178 ehea_h_reset_events(adapter->handle,
1179 adapter->neq->fw_handle, event_mask);
1180 }
1181
1182 static irqreturn_t ehea_interrupt_neq(int irq, void *param)
1183 {
1184 struct ehea_adapter *adapter = param;
1185 tasklet_hi_schedule(&adapter->neq_tasklet);
1186 return IRQ_HANDLED;
1187 }
1188
1189
1190 static int ehea_fill_port_res(struct ehea_port_res *pr)
1191 {
1192 int ret;
1193 struct ehea_qp_init_attr *init_attr = &pr->qp->init_attr;
1194
1195 ret = ehea_init_fill_rq1(pr, init_attr->act_nr_rwqes_rq1
1196 - init_attr->act_nr_rwqes_rq2
1197 - init_attr->act_nr_rwqes_rq3 - 1);
1198
1199 ret |= ehea_refill_rq2(pr, init_attr->act_nr_rwqes_rq2 - 1);
1200
1201 ret |= ehea_refill_rq3(pr, init_attr->act_nr_rwqes_rq3 - 1);
1202
1203 return ret;
1204 }
1205
1206 static int ehea_reg_interrupts(struct net_device *dev)
1207 {
1208 struct ehea_port *port = netdev_priv(dev);
1209 struct ehea_port_res *pr;
1210 int i, ret;
1211
1212
1213 snprintf(port->int_aff_name, EHEA_IRQ_NAME_SIZE - 1, "%s-aff",
1214 dev->name);
1215
1216 ret = ibmebus_request_irq(port->qp_eq->attr.ist1,
1217 ehea_qp_aff_irq_handler,
1218 IRQF_DISABLED, port->int_aff_name, port);
1219 if (ret) {
1220 ehea_error("failed registering irq for qp_aff_irq_handler:"
1221 "ist=%X", port->qp_eq->attr.ist1);
1222 goto out_free_qpeq;
1223 }
1224
1225 if (netif_msg_ifup(port))
1226 ehea_info("irq_handle 0x%X for function qp_aff_irq_handler "
1227 "registered", port->qp_eq->attr.ist1);
1228
1229
1230 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
1231 pr = &port->port_res[i];
1232 snprintf(pr->int_send_name, EHEA_IRQ_NAME_SIZE - 1,
1233 "%s-queue%d", dev->name, i);
1234 ret = ibmebus_request_irq(pr->eq->attr.ist1,
1235 ehea_recv_irq_handler,
1236 IRQF_DISABLED, pr->int_send_name,
1237 pr);
1238 if (ret) {
1239 ehea_error("failed registering irq for ehea_queue "
1240 "port_res_nr:%d, ist=%X", i,
1241 pr->eq->attr.ist1);
1242 goto out_free_req;
1243 }
1244 if (netif_msg_ifup(port))
1245 ehea_info("irq_handle 0x%X for function ehea_queue_int "
1246 "%d registered", pr->eq->attr.ist1, i);
1247 }
1248 out:
1249 return ret;
1250
1251
1252 out_free_req:
1253 while (--i >= 0) {
1254 u32 ist = port->port_res[i].eq->attr.ist1;
1255 ibmebus_free_irq(ist, &port->port_res[i]);
1256 }
1257
1258 out_free_qpeq:
1259 ibmebus_free_irq(port->qp_eq->attr.ist1, port);
1260 i = port->num_def_qps;
1261
1262 goto out;
1263
1264 }
1265
1266 static void ehea_free_interrupts(struct net_device *dev)
1267 {
1268 struct ehea_port *port = netdev_priv(dev);
1269 struct ehea_port_res *pr;
1270 int i;
1271
1272 /* send */
1273
1274 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
1275 pr = &port->port_res[i];
1276 ibmebus_free_irq(pr->eq->attr.ist1, pr);
1277 if (netif_msg_intr(port))
1278 ehea_info("free send irq for res %d with handle 0x%X",
1279 i, pr->eq->attr.ist1);
1280 }
1281
1282 /* associated events */
1283 ibmebus_free_irq(port->qp_eq->attr.ist1, port);
1284 if (netif_msg_intr(port))
1285 ehea_info("associated event interrupt for handle 0x%X freed",
1286 port->qp_eq->attr.ist1);
1287 }
1288
1289 static int ehea_configure_port(struct ehea_port *port)
1290 {
1291 int ret, i;
1292 u64 hret, mask;
1293 struct hcp_ehea_port_cb0 *cb0;
1294
1295 ret = -ENOMEM;
1296 cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL);
1297 if (!cb0)
1298 goto out;
1299
1300 cb0->port_rc = EHEA_BMASK_SET(PXLY_RC_VALID, 1)
1301 | EHEA_BMASK_SET(PXLY_RC_IP_CHKSUM, 1)
1302 | EHEA_BMASK_SET(PXLY_RC_TCP_UDP_CHKSUM, 1)
1303 | EHEA_BMASK_SET(PXLY_RC_VLAN_XTRACT, 1)
1304 | EHEA_BMASK_SET(PXLY_RC_VLAN_TAG_FILTER,
1305 PXLY_RC_VLAN_FILTER)
1306 | EHEA_BMASK_SET(PXLY_RC_JUMBO_FRAME, 1);
1307
1308 for (i = 0; i < port->num_mcs; i++)
1309 if (use_mcs)
1310 cb0->default_qpn_arr[i] =
1311 port->port_res[i].qp->init_attr.qp_nr;
1312 else
1313 cb0->default_qpn_arr[i] =
1314 port->port_res[0].qp->init_attr.qp_nr;
1315
1316 if (netif_msg_ifup(port))
1317 ehea_dump(cb0, sizeof(*cb0), "ehea_configure_port");
1318
1319 mask = EHEA_BMASK_SET(H_PORT_CB0_PRC, 1)
1320 | EHEA_BMASK_SET(H_PORT_CB0_DEFQPNARRAY, 1);
1321
1322 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1323 port->logical_port_id,
1324 H_PORT_CB0, mask, cb0);
1325 ret = -EIO;
1326 if (hret != H_SUCCESS)
1327 goto out_free;
1328
1329 ret = 0;
1330
1331 out_free:
1332 kfree(cb0);
1333 out:
1334 return ret;
1335 }
1336
1337 int ehea_gen_smrs(struct ehea_port_res *pr)
1338 {
1339 int ret;
1340 struct ehea_adapter *adapter = pr->port->adapter;
1341
1342 ret = ehea_gen_smr(adapter, &adapter->mr, &pr->send_mr);
1343 if (ret)
1344 goto out;
1345
1346 ret = ehea_gen_smr(adapter, &adapter->mr, &pr->recv_mr);
1347 if (ret)
1348 goto out_free;
1349
1350 return 0;
1351
1352 out_free:
1353 ehea_rem_mr(&pr->send_mr);
1354 out:
1355 ehea_error("Generating SMRS failed\n");
1356 return -EIO;
1357 }
1358
1359 int ehea_rem_smrs(struct ehea_port_res *pr)
1360 {
1361 if ((ehea_rem_mr(&pr->send_mr))
1362 || (ehea_rem_mr(&pr->recv_mr)))
1363 return -EIO;
1364 else
1365 return 0;
1366 }
1367
1368 static int ehea_init_q_skba(struct ehea_q_skb_arr *q_skba, int max_q_entries)
1369 {
1370 int arr_size = sizeof(void *) * max_q_entries;
1371
1372 q_skba->arr = vmalloc(arr_size);
1373 if (!q_skba->arr)
1374 return -ENOMEM;
1375
1376 memset(q_skba->arr, 0, arr_size);
1377
1378 q_skba->len = max_q_entries;
1379 q_skba->index = 0;
1380 q_skba->os_skbs = 0;
1381
1382 return 0;
1383 }
1384
1385 static int ehea_init_port_res(struct ehea_port *port, struct ehea_port_res *pr,
1386 struct port_res_cfg *pr_cfg, int queue_token)
1387 {
1388 struct ehea_adapter *adapter = port->adapter;
1389 enum ehea_eq_type eq_type = EHEA_EQ;
1390 struct ehea_qp_init_attr *init_attr = NULL;
1391 int ret = -EIO;
1392
1393 memset(pr, 0, sizeof(struct ehea_port_res));
1394
1395 pr->port = port;
1396 spin_lock_init(&pr->xmit_lock);
1397 spin_lock_init(&pr->netif_queue);
1398
1399 pr->eq = ehea_create_eq(adapter, eq_type, EHEA_MAX_ENTRIES_EQ, 0);
1400 if (!pr->eq) {
1401 ehea_error("create_eq failed (eq)");
1402 goto out_free;
1403 }
1404
1405 pr->recv_cq = ehea_create_cq(adapter, pr_cfg->max_entries_rcq,
1406 pr->eq->fw_handle,
1407 port->logical_port_id);
1408 if (!pr->recv_cq) {
1409 ehea_error("create_cq failed (cq_recv)");
1410 goto out_free;
1411 }
1412
1413 pr->send_cq = ehea_create_cq(adapter, pr_cfg->max_entries_scq,
1414 pr->eq->fw_handle,
1415 port->logical_port_id);
1416 if (!pr->send_cq) {
1417 ehea_error("create_cq failed (cq_send)");
1418 goto out_free;
1419 }
1420
1421 if (netif_msg_ifup(port))
1422 ehea_info("Send CQ: act_nr_cqes=%d, Recv CQ: act_nr_cqes=%d",
1423 pr->send_cq->attr.act_nr_of_cqes,
1424 pr->recv_cq->attr.act_nr_of_cqes);
1425
1426 init_attr = kzalloc(sizeof(*init_attr), GFP_KERNEL);
1427 if (!init_attr) {
1428 ret = -ENOMEM;
1429 ehea_error("no mem for ehea_qp_init_attr");
1430 goto out_free;
1431 }
1432
1433 init_attr->low_lat_rq1 = 1;
1434 init_attr->signalingtype = 1; /* generate CQE if specified in WQE */
1435 init_attr->rq_count = 3;
1436 init_attr->qp_token = queue_token;
1437 init_attr->max_nr_send_wqes = pr_cfg->max_entries_sq;
1438 init_attr->max_nr_rwqes_rq1 = pr_cfg->max_entries_rq1;
1439 init_attr->max_nr_rwqes_rq2 = pr_cfg->max_entries_rq2;
1440 init_attr->max_nr_rwqes_rq3 = pr_cfg->max_entries_rq3;
1441 init_attr->wqe_size_enc_sq = EHEA_SG_SQ;
1442 init_attr->wqe_size_enc_rq1 = EHEA_SG_RQ1;
1443 init_attr->wqe_size_enc_rq2 = EHEA_SG_RQ2;
1444 init_attr->wqe_size_enc_rq3 = EHEA_SG_RQ3;
1445 init_attr->rq2_threshold = EHEA_RQ2_THRESHOLD;
1446 init_attr->rq3_threshold = EHEA_RQ3_THRESHOLD;
1447 init_attr->port_nr = port->logical_port_id;
1448 init_attr->send_cq_handle = pr->send_cq->fw_handle;
1449 init_attr->recv_cq_handle = pr->recv_cq->fw_handle;
1450 init_attr->aff_eq_handle = port->qp_eq->fw_handle;
1451
1452 pr->qp = ehea_create_qp(adapter, adapter->pd, init_attr);
1453 if (!pr->qp) {
1454 ehea_error("create_qp failed");
1455 ret = -EIO;
1456 goto out_free;
1457 }
1458
1459 if (netif_msg_ifup(port))
1460 ehea_info("QP: qp_nr=%d\n act_nr_snd_wqe=%d\n nr_rwqe_rq1=%d\n "
1461 "nr_rwqe_rq2=%d\n nr_rwqe_rq3=%d", init_attr->qp_nr,
1462 init_attr->act_nr_send_wqes,
1463 init_attr->act_nr_rwqes_rq1,
1464 init_attr->act_nr_rwqes_rq2,
1465 init_attr->act_nr_rwqes_rq3);
1466
1467 ret = ehea_init_q_skba(&pr->sq_skba, init_attr->act_nr_send_wqes + 1);
1468 ret |= ehea_init_q_skba(&pr->rq1_skba, init_attr->act_nr_rwqes_rq1 + 1);
1469 ret |= ehea_init_q_skba(&pr->rq2_skba, init_attr->act_nr_rwqes_rq2 + 1);
1470 ret |= ehea_init_q_skba(&pr->rq3_skba, init_attr->act_nr_rwqes_rq3 + 1);
1471 if (ret)
1472 goto out_free;
1473
1474 pr->swqe_refill_th = init_attr->act_nr_send_wqes / 10;
1475 if (ehea_gen_smrs(pr) != 0) {
1476 ret = -EIO;
1477 goto out_free;
1478 }
1479
1480 atomic_set(&pr->swqe_avail, init_attr->act_nr_send_wqes - 1);
1481
1482 kfree(init_attr);
1483
1484 netif_napi_add(pr->port->netdev, &pr->napi, ehea_poll, 64);
1485
1486 pr->lro_mgr.max_aggr = pr->port->lro_max_aggr;
1487 pr->lro_mgr.max_desc = MAX_LRO_DESCRIPTORS;
1488 pr->lro_mgr.lro_arr = pr->lro_desc;
1489 pr->lro_mgr.get_skb_header = get_skb_hdr;
1490 pr->lro_mgr.features = LRO_F_NAPI | LRO_F_EXTRACT_VLAN_ID;
1491 pr->lro_mgr.dev = port->netdev;
1492 pr->lro_mgr.ip_summed = CHECKSUM_UNNECESSARY;
1493 pr->lro_mgr.ip_summed_aggr = CHECKSUM_UNNECESSARY;
1494
1495 ret = 0;
1496 goto out;
1497
1498 out_free:
1499 kfree(init_attr);
1500 vfree(pr->sq_skba.arr);
1501 vfree(pr->rq1_skba.arr);
1502 vfree(pr->rq2_skba.arr);
1503 vfree(pr->rq3_skba.arr);
1504 ehea_destroy_qp(pr->qp);
1505 ehea_destroy_cq(pr->send_cq);
1506 ehea_destroy_cq(pr->recv_cq);
1507 ehea_destroy_eq(pr->eq);
1508 out:
1509 return ret;
1510 }
1511
1512 static int ehea_clean_portres(struct ehea_port *port, struct ehea_port_res *pr)
1513 {
1514 int ret, i;
1515
1516 ret = ehea_destroy_qp(pr->qp);
1517
1518 if (!ret) {
1519 ehea_destroy_cq(pr->send_cq);
1520 ehea_destroy_cq(pr->recv_cq);
1521 ehea_destroy_eq(pr->eq);
1522
1523 for (i = 0; i < pr->rq1_skba.len; i++)
1524 if (pr->rq1_skba.arr[i])
1525 dev_kfree_skb(pr->rq1_skba.arr[i]);
1526
1527 for (i = 0; i < pr->rq2_skba.len; i++)
1528 if (pr->rq2_skba.arr[i])
1529 dev_kfree_skb(pr->rq2_skba.arr[i]);
1530
1531 for (i = 0; i < pr->rq3_skba.len; i++)
1532 if (pr->rq3_skba.arr[i])
1533 dev_kfree_skb(pr->rq3_skba.arr[i]);
1534
1535 for (i = 0; i < pr->sq_skba.len; i++)
1536 if (pr->sq_skba.arr[i])
1537 dev_kfree_skb(pr->sq_skba.arr[i]);
1538
1539 vfree(pr->rq1_skba.arr);
1540 vfree(pr->rq2_skba.arr);
1541 vfree(pr->rq3_skba.arr);
1542 vfree(pr->sq_skba.arr);
1543 ret = ehea_rem_smrs(pr);
1544 }
1545 return ret;
1546 }
1547
1548 /*
1549 * The write_* functions store information in swqe which is used by
1550 * the hardware to calculate the ip/tcp/udp checksum
1551 */
1552
1553 static inline void write_ip_start_end(struct ehea_swqe *swqe,
1554 const struct sk_buff *skb)
1555 {
1556 swqe->ip_start = skb_network_offset(skb);
1557 swqe->ip_end = (u8)(swqe->ip_start + ip_hdrlen(skb) - 1);
1558 }
1559
1560 static inline void write_tcp_offset_end(struct ehea_swqe *swqe,
1561 const struct sk_buff *skb)
1562 {
1563 swqe->tcp_offset =
1564 (u8)(swqe->ip_end + 1 + offsetof(struct tcphdr, check));
1565
1566 swqe->tcp_end = (u16)skb->len - 1;
1567 }
1568
1569 static inline void write_udp_offset_end(struct ehea_swqe *swqe,
1570 const struct sk_buff *skb)
1571 {
1572 swqe->tcp_offset =
1573 (u8)(swqe->ip_end + 1 + offsetof(struct udphdr, check));
1574
1575 swqe->tcp_end = (u16)skb->len - 1;
1576 }
1577
1578
1579 static void write_swqe2_TSO(struct sk_buff *skb,
1580 struct ehea_swqe *swqe, u32 lkey)
1581 {
1582 struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry;
1583 u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0];
1584 int skb_data_size = skb->len - skb->data_len;
1585 int headersize;
1586
1587 /* Packet is TCP with TSO enabled */
1588 swqe->tx_control |= EHEA_SWQE_TSO;
1589 swqe->mss = skb_shinfo(skb)->gso_size;
1590 /* copy only eth/ip/tcp headers to immediate data and
1591 * the rest of skb->data to sg1entry
1592 */
1593 headersize = ETH_HLEN + ip_hdrlen(skb) + tcp_hdrlen(skb);
1594
1595 skb_data_size = skb->len - skb->data_len;
1596
1597 if (skb_data_size >= headersize) {
1598 /* copy immediate data */
1599 skb_copy_from_linear_data(skb, imm_data, headersize);
1600 swqe->immediate_data_length = headersize;
1601
1602 if (skb_data_size > headersize) {
1603 /* set sg1entry data */
1604 sg1entry->l_key = lkey;
1605 sg1entry->len = skb_data_size - headersize;
1606 sg1entry->vaddr =
1607 ehea_map_vaddr(skb->data + headersize);
1608 swqe->descriptors++;
1609 }
1610 } else
1611 ehea_error("cannot handle fragmented headers");
1612 }
1613
1614 static void write_swqe2_nonTSO(struct sk_buff *skb,
1615 struct ehea_swqe *swqe, u32 lkey)
1616 {
1617 int skb_data_size = skb->len - skb->data_len;
1618 u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0];
1619 struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry;
1620
1621 /* Packet is any nonTSO type
1622 *
1623 * Copy as much as possible skb->data to immediate data and
1624 * the rest to sg1entry
1625 */
1626 if (skb_data_size >= SWQE2_MAX_IMM) {
1627 /* copy immediate data */
1628 skb_copy_from_linear_data(skb, imm_data, SWQE2_MAX_IMM);
1629
1630 swqe->immediate_data_length = SWQE2_MAX_IMM;
1631
1632 if (skb_data_size > SWQE2_MAX_IMM) {
1633 /* copy sg1entry data */
1634 sg1entry->l_key = lkey;
1635 sg1entry->len = skb_data_size - SWQE2_MAX_IMM;
1636 sg1entry->vaddr =
1637 ehea_map_vaddr(skb->data + SWQE2_MAX_IMM);
1638 swqe->descriptors++;
1639 }
1640 } else {
1641 skb_copy_from_linear_data(skb, imm_data, skb_data_size);
1642 swqe->immediate_data_length = skb_data_size;
1643 }
1644 }
1645
1646 static inline void write_swqe2_data(struct sk_buff *skb, struct net_device *dev,
1647 struct ehea_swqe *swqe, u32 lkey)
1648 {
1649 struct ehea_vsgentry *sg_list, *sg1entry, *sgentry;
1650 skb_frag_t *frag;
1651 int nfrags, sg1entry_contains_frag_data, i;
1652
1653 nfrags = skb_shinfo(skb)->nr_frags;
1654 sg1entry = &swqe->u.immdata_desc.sg_entry;
1655 sg_list = (struct ehea_vsgentry *)&swqe->u.immdata_desc.sg_list;
1656 swqe->descriptors = 0;
1657 sg1entry_contains_frag_data = 0;
1658
1659 if ((dev->features & NETIF_F_TSO) && skb_shinfo(skb)->gso_size)
1660 write_swqe2_TSO(skb, swqe, lkey);
1661 else
1662 write_swqe2_nonTSO(skb, swqe, lkey);
1663
1664 /* write descriptors */
1665 if (nfrags > 0) {
1666 if (swqe->descriptors == 0) {
1667 /* sg1entry not yet used */
1668 frag = &skb_shinfo(skb)->frags[0];
1669
1670 /* copy sg1entry data */
1671 sg1entry->l_key = lkey;
1672 sg1entry->len = frag->size;
1673 sg1entry->vaddr =
1674 ehea_map_vaddr(page_address(frag->page)
1675 + frag->page_offset);
1676 swqe->descriptors++;
1677 sg1entry_contains_frag_data = 1;
1678 }
1679
1680 for (i = sg1entry_contains_frag_data; i < nfrags; i++) {
1681
1682 frag = &skb_shinfo(skb)->frags[i];
1683 sgentry = &sg_list[i - sg1entry_contains_frag_data];
1684
1685 sgentry->l_key = lkey;
1686 sgentry->len = frag->size;
1687 sgentry->vaddr =
1688 ehea_map_vaddr(page_address(frag->page)
1689 + frag->page_offset);
1690 swqe->descriptors++;
1691 }
1692 }
1693 }
1694
1695 static int ehea_broadcast_reg_helper(struct ehea_port *port, u32 hcallid)
1696 {
1697 int ret = 0;
1698 u64 hret;
1699 u8 reg_type;
1700
1701 /* De/Register untagged packets */
1702 reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_UNTAGGED;
1703 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1704 port->logical_port_id,
1705 reg_type, port->mac_addr, 0, hcallid);
1706 if (hret != H_SUCCESS) {
1707 ehea_error("%sregistering bc address failed (tagged)",
1708 hcallid == H_REG_BCMC ? "" : "de");
1709 ret = -EIO;
1710 goto out_herr;
1711 }
1712
1713 /* De/Register VLAN packets */
1714 reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_VLANID_ALL;
1715 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1716 port->logical_port_id,
1717 reg_type, port->mac_addr, 0, hcallid);
1718 if (hret != H_SUCCESS) {
1719 ehea_error("%sregistering bc address failed (vlan)",
1720 hcallid == H_REG_BCMC ? "" : "de");
1721 ret = -EIO;
1722 }
1723 out_herr:
1724 return ret;
1725 }
1726
1727 static int ehea_set_mac_addr(struct net_device *dev, void *sa)
1728 {
1729 struct ehea_port *port = netdev_priv(dev);
1730 struct sockaddr *mac_addr = sa;
1731 struct hcp_ehea_port_cb0 *cb0;
1732 int ret;
1733 u64 hret;
1734
1735 if (!is_valid_ether_addr(mac_addr->sa_data)) {
1736 ret = -EADDRNOTAVAIL;
1737 goto out;
1738 }
1739
1740 cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL);
1741 if (!cb0) {
1742 ehea_error("no mem for cb0");
1743 ret = -ENOMEM;
1744 goto out;
1745 }
1746
1747 memcpy(&(cb0->port_mac_addr), &(mac_addr->sa_data[0]), ETH_ALEN);
1748
1749 cb0->port_mac_addr = cb0->port_mac_addr >> 16;
1750
1751 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1752 port->logical_port_id, H_PORT_CB0,
1753 EHEA_BMASK_SET(H_PORT_CB0_MAC, 1), cb0);
1754 if (hret != H_SUCCESS) {
1755 ret = -EIO;
1756 goto out_free;
1757 }
1758
1759 memcpy(dev->dev_addr, mac_addr->sa_data, dev->addr_len);
1760
1761 down(&ehea_bcmc_regs.lock);
1762
1763 /* Deregister old MAC in pHYP */
1764 ret = ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
1765 if (ret)
1766 goto out_upregs;
1767
1768 port->mac_addr = cb0->port_mac_addr << 16;
1769
1770 /* Register new MAC in pHYP */
1771 ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
1772 if (ret)
1773 goto out_upregs;
1774
1775 ret = 0;
1776
1777 out_upregs:
1778 ehea_update_bcmc_registrations();
1779 up(&ehea_bcmc_regs.lock);
1780 out_free:
1781 kfree(cb0);
1782 out:
1783 return ret;
1784 }
1785
1786 static void ehea_promiscuous_error(u64 hret, int enable)
1787 {
1788 if (hret == H_AUTHORITY)
1789 ehea_info("Hypervisor denied %sabling promiscuous mode",
1790 enable == 1 ? "en" : "dis");
1791 else
1792 ehea_error("failed %sabling promiscuous mode",
1793 enable == 1 ? "en" : "dis");
1794 }
1795
1796 static void ehea_promiscuous(struct net_device *dev, int enable)
1797 {
1798 struct ehea_port *port = netdev_priv(dev);
1799 struct hcp_ehea_port_cb7 *cb7;
1800 u64 hret;
1801
1802 if ((enable && port->promisc) || (!enable && !port->promisc))
1803 return;
1804
1805 cb7 = kzalloc(PAGE_SIZE, GFP_ATOMIC);
1806 if (!cb7) {
1807 ehea_error("no mem for cb7");
1808 goto out;
1809 }
1810
1811 /* Modify Pxs_DUCQPN in CB7 */
1812 cb7->def_uc_qpn = enable == 1 ? port->port_res[0].qp->fw_handle : 0;
1813
1814 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1815 port->logical_port_id,
1816 H_PORT_CB7, H_PORT_CB7_DUCQPN, cb7);
1817 if (hret) {
1818 ehea_promiscuous_error(hret, enable);
1819 goto out;
1820 }
1821
1822 port->promisc = enable;
1823 out:
1824 kfree(cb7);
1825 return;
1826 }
1827
1828 static u64 ehea_multicast_reg_helper(struct ehea_port *port, u64 mc_mac_addr,
1829 u32 hcallid)
1830 {
1831 u64 hret;
1832 u8 reg_type;
1833
1834 reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST
1835 | EHEA_BCMC_UNTAGGED;
1836
1837 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1838 port->logical_port_id,
1839 reg_type, mc_mac_addr, 0, hcallid);
1840 if (hret)
1841 goto out;
1842
1843 reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST
1844 | EHEA_BCMC_VLANID_ALL;
1845
1846 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1847 port->logical_port_id,
1848 reg_type, mc_mac_addr, 0, hcallid);
1849 out:
1850 return hret;
1851 }
1852
1853 static int ehea_drop_multicast_list(struct net_device *dev)
1854 {
1855 struct ehea_port *port = netdev_priv(dev);
1856 struct ehea_mc_list *mc_entry = port->mc_list;
1857 struct list_head *pos;
1858 struct list_head *temp;
1859 int ret = 0;
1860 u64 hret;
1861
1862 list_for_each_safe(pos, temp, &(port->mc_list->list)) {
1863 mc_entry = list_entry(pos, struct ehea_mc_list, list);
1864
1865 hret = ehea_multicast_reg_helper(port, mc_entry->macaddr,
1866 H_DEREG_BCMC);
1867 if (hret) {
1868 ehea_error("failed deregistering mcast MAC");
1869 ret = -EIO;
1870 }
1871
1872 list_del(pos);
1873 kfree(mc_entry);
1874 }
1875 return ret;
1876 }
1877
1878 static void ehea_allmulti(struct net_device *dev, int enable)
1879 {
1880 struct ehea_port *port = netdev_priv(dev);
1881 u64 hret;
1882
1883 if (!port->allmulti) {
1884 if (enable) {
1885 /* Enable ALLMULTI */
1886 ehea_drop_multicast_list(dev);
1887 hret = ehea_multicast_reg_helper(port, 0, H_REG_BCMC);
1888 if (!hret)
1889 port->allmulti = 1;
1890 else
1891 ehea_error("failed enabling IFF_ALLMULTI");
1892 }
1893 } else
1894 if (!enable) {
1895 /* Disable ALLMULTI */
1896 hret = ehea_multicast_reg_helper(port, 0, H_DEREG_BCMC);
1897 if (!hret)
1898 port->allmulti = 0;
1899 else
1900 ehea_error("failed disabling IFF_ALLMULTI");
1901 }
1902 }
1903
1904 static void ehea_add_multicast_entry(struct ehea_port *port, u8 *mc_mac_addr)
1905 {
1906 struct ehea_mc_list *ehea_mcl_entry;
1907 u64 hret;
1908
1909 ehea_mcl_entry = kzalloc(sizeof(*ehea_mcl_entry), GFP_ATOMIC);
1910 if (!ehea_mcl_entry) {
1911 ehea_error("no mem for mcl_entry");
1912 return;
1913 }
1914
1915 INIT_LIST_HEAD(&ehea_mcl_entry->list);
1916
1917 memcpy(&ehea_mcl_entry->macaddr, mc_mac_addr, ETH_ALEN);
1918
1919 hret = ehea_multicast_reg_helper(port, ehea_mcl_entry->macaddr,
1920 H_REG_BCMC);
1921 if (!hret)
1922 list_add(&ehea_mcl_entry->list, &port->mc_list->list);
1923 else {
1924 ehea_error("failed registering mcast MAC");
1925 kfree(ehea_mcl_entry);
1926 }
1927 }
1928
1929 static void ehea_set_multicast_list(struct net_device *dev)
1930 {
1931 struct ehea_port *port = netdev_priv(dev);
1932 struct dev_mc_list *k_mcl_entry;
1933 int ret, i;
1934
1935 if (dev->flags & IFF_PROMISC) {
1936 ehea_promiscuous(dev, 1);
1937 return;
1938 }
1939 ehea_promiscuous(dev, 0);
1940
1941 down(&ehea_bcmc_regs.lock);
1942
1943 if (dev->flags & IFF_ALLMULTI) {
1944 ehea_allmulti(dev, 1);
1945 goto out;
1946 }
1947 ehea_allmulti(dev, 0);
1948
1949 if (dev->mc_count) {
1950 ret = ehea_drop_multicast_list(dev);
1951 if (ret) {
1952 /* Dropping the current multicast list failed.
1953 * Enabling ALL_MULTI is the best we can do.
1954 */
1955 ehea_allmulti(dev, 1);
1956 }
1957
1958 if (dev->mc_count > port->adapter->max_mc_mac) {
1959 ehea_info("Mcast registration limit reached (0x%lx). "
1960 "Use ALLMULTI!",
1961 port->adapter->max_mc_mac);
1962 goto out;
1963 }
1964
1965 for (i = 0, k_mcl_entry = dev->mc_list; i < dev->mc_count; i++,
1966 k_mcl_entry = k_mcl_entry->next)
1967 ehea_add_multicast_entry(port, k_mcl_entry->dmi_addr);
1968
1969 }
1970 out:
1971 ehea_update_bcmc_registrations();
1972 up(&ehea_bcmc_regs.lock);
1973 return;
1974 }
1975
1976 static int ehea_change_mtu(struct net_device *dev, int new_mtu)
1977 {
1978 if ((new_mtu < 68) || (new_mtu > EHEA_MAX_PACKET_SIZE))
1979 return -EINVAL;
1980 dev->mtu = new_mtu;
1981 return 0;
1982 }
1983
1984 static void ehea_xmit2(struct sk_buff *skb, struct net_device *dev,
1985 struct ehea_swqe *swqe, u32 lkey)
1986 {
1987 if (skb->protocol == htons(ETH_P_IP)) {
1988 const struct iphdr *iph = ip_hdr(skb);
1989
1990 /* IPv4 */
1991 swqe->tx_control |= EHEA_SWQE_CRC
1992 | EHEA_SWQE_IP_CHECKSUM
1993 | EHEA_SWQE_TCP_CHECKSUM
1994 | EHEA_SWQE_IMM_DATA_PRESENT
1995 | EHEA_SWQE_DESCRIPTORS_PRESENT;
1996
1997 write_ip_start_end(swqe, skb);
1998
1999 if (iph->protocol == IPPROTO_UDP) {
2000 if ((iph->frag_off & IP_MF)
2001 || (iph->frag_off & IP_OFFSET))
2002 /* IP fragment, so don't change cs */
2003 swqe->tx_control &= ~EHEA_SWQE_TCP_CHECKSUM;
2004 else
2005 write_udp_offset_end(swqe, skb);
2006 } else if (iph->protocol == IPPROTO_TCP) {
2007 write_tcp_offset_end(swqe, skb);
2008 }
2009
2010 /* icmp (big data) and ip segmentation packets (all other ip
2011 packets) do not require any special handling */
2012
2013 } else {
2014 /* Other Ethernet Protocol */
2015 swqe->tx_control |= EHEA_SWQE_CRC
2016 | EHEA_SWQE_IMM_DATA_PRESENT
2017 | EHEA_SWQE_DESCRIPTORS_PRESENT;
2018 }
2019
2020 write_swqe2_data(skb, dev, swqe, lkey);
2021 }
2022
2023 static void ehea_xmit3(struct sk_buff *skb, struct net_device *dev,
2024 struct ehea_swqe *swqe)
2025 {
2026 int nfrags = skb_shinfo(skb)->nr_frags;
2027 u8 *imm_data = &swqe->u.immdata_nodesc.immediate_data[0];
2028 skb_frag_t *frag;
2029 int i;
2030
2031 if (skb->protocol == htons(ETH_P_IP)) {
2032 const struct iphdr *iph = ip_hdr(skb);
2033
2034 /* IPv4 */
2035 write_ip_start_end(swqe, skb);
2036
2037 if (iph->protocol == IPPROTO_TCP) {
2038 swqe->tx_control |= EHEA_SWQE_CRC
2039 | EHEA_SWQE_IP_CHECKSUM
2040 | EHEA_SWQE_TCP_CHECKSUM
2041 | EHEA_SWQE_IMM_DATA_PRESENT;
2042
2043 write_tcp_offset_end(swqe, skb);
2044
2045 } else if (iph->protocol == IPPROTO_UDP) {
2046 if ((iph->frag_off & IP_MF)
2047 || (iph->frag_off & IP_OFFSET))
2048 /* IP fragment, so don't change cs */
2049 swqe->tx_control |= EHEA_SWQE_CRC
2050 | EHEA_SWQE_IMM_DATA_PRESENT;
2051 else {
2052 swqe->tx_control |= EHEA_SWQE_CRC
2053 | EHEA_SWQE_IP_CHECKSUM
2054 | EHEA_SWQE_TCP_CHECKSUM
2055 | EHEA_SWQE_IMM_DATA_PRESENT;
2056
2057 write_udp_offset_end(swqe, skb);
2058 }
2059 } else {
2060 /* icmp (big data) and
2061 ip segmentation packets (all other ip packets) */
2062 swqe->tx_control |= EHEA_SWQE_CRC
2063 | EHEA_SWQE_IP_CHECKSUM
2064 | EHEA_SWQE_IMM_DATA_PRESENT;
2065 }
2066 } else {
2067 /* Other Ethernet Protocol */
2068 swqe->tx_control |= EHEA_SWQE_CRC | EHEA_SWQE_IMM_DATA_PRESENT;
2069 }
2070 /* copy (immediate) data */
2071 if (nfrags == 0) {
2072 /* data is in a single piece */
2073 skb_copy_from_linear_data(skb, imm_data, skb->len);
2074 } else {
2075 /* first copy data from the skb->data buffer ... */
2076 skb_copy_from_linear_data(skb, imm_data,
2077 skb->len - skb->data_len);
2078 imm_data += skb->len - skb->data_len;
2079
2080 /* ... then copy data from the fragments */
2081 for (i = 0; i < nfrags; i++) {
2082 frag = &skb_shinfo(skb)->frags[i];
2083 memcpy(imm_data,
2084 page_address(frag->page) + frag->page_offset,
2085 frag->size);
2086 imm_data += frag->size;
2087 }
2088 }
2089 swqe->immediate_data_length = skb->len;
2090 dev_kfree_skb(skb);
2091 }
2092
2093 static inline int ehea_hash_skb(struct sk_buff *skb, int num_qps)
2094 {
2095 struct tcphdr *tcp;
2096 u32 tmp;
2097
2098 if ((skb->protocol == htons(ETH_P_IP)) &&
2099 (ip_hdr(skb)->protocol == IPPROTO_TCP)) {
2100 tcp = (struct tcphdr *)(skb_network_header(skb) +
2101 (ip_hdr(skb)->ihl * 4));
2102 tmp = (tcp->source + (tcp->dest << 16)) % 31;
2103 tmp += ip_hdr(skb)->daddr % 31;
2104 return tmp % num_qps;
2105 } else
2106 return 0;
2107 }
2108
2109 static int ehea_start_xmit(struct sk_buff *skb, struct net_device *dev)
2110 {
2111 struct ehea_port *port = netdev_priv(dev);
2112 struct ehea_swqe *swqe;
2113 unsigned long flags;
2114 u32 lkey;
2115 int swqe_index;
2116 struct ehea_port_res *pr;
2117
2118 pr = &port->port_res[ehea_hash_skb(skb, port->num_tx_qps)];
2119
2120 if (!spin_trylock(&pr->xmit_lock))
2121 return NETDEV_TX_BUSY;
2122
2123 if (pr->queue_stopped) {
2124 spin_unlock(&pr->xmit_lock);
2125 return NETDEV_TX_BUSY;
2126 }
2127
2128 swqe = ehea_get_swqe(pr->qp, &swqe_index);
2129 memset(swqe, 0, SWQE_HEADER_SIZE);
2130 atomic_dec(&pr->swqe_avail);
2131
2132 if (skb->len <= SWQE3_MAX_IMM) {
2133 u32 sig_iv = port->sig_comp_iv;
2134 u32 swqe_num = pr->swqe_id_counter;
2135 ehea_xmit3(skb, dev, swqe);
2136 swqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE3_TYPE)
2137 | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, swqe_num);
2138 if (pr->swqe_ll_count >= (sig_iv - 1)) {
2139 swqe->wr_id |= EHEA_BMASK_SET(EHEA_WR_ID_REFILL,
2140 sig_iv);
2141 swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
2142 pr->swqe_ll_count = 0;
2143 } else
2144 pr->swqe_ll_count += 1;
2145 } else {
2146 swqe->wr_id =
2147 EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE2_TYPE)
2148 | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, pr->swqe_id_counter)
2149 | EHEA_BMASK_SET(EHEA_WR_ID_REFILL, 1)
2150 | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, pr->sq_skba.index);
2151 pr->sq_skba.arr[pr->sq_skba.index] = skb;
2152
2153 pr->sq_skba.index++;
2154 pr->sq_skba.index &= (pr->sq_skba.len - 1);
2155
2156 lkey = pr->send_mr.lkey;
2157 ehea_xmit2(skb, dev, swqe, lkey);
2158 swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
2159 }
2160 pr->swqe_id_counter += 1;
2161
2162 if (port->vgrp && vlan_tx_tag_present(skb)) {
2163 swqe->tx_control |= EHEA_SWQE_VLAN_INSERT;
2164 swqe->vlan_tag = vlan_tx_tag_get(skb);
2165 }
2166
2167 if (netif_msg_tx_queued(port)) {
2168 ehea_info("post swqe on QP %d", pr->qp->init_attr.qp_nr);
2169 ehea_dump(swqe, 512, "swqe");
2170 }
2171
2172 if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) {
2173 netif_stop_queue(dev);
2174 swqe->tx_control |= EHEA_SWQE_PURGE;
2175 }
2176
2177 ehea_post_swqe(pr->qp, swqe);
2178 pr->tx_packets++;
2179
2180 if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) {
2181 spin_lock_irqsave(&pr->netif_queue, flags);
2182 if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) {
2183 pr->p_stats.queue_stopped++;
2184 netif_stop_queue(dev);
2185 pr->queue_stopped = 1;
2186 }
2187 spin_unlock_irqrestore(&pr->netif_queue, flags);
2188 }
2189 dev->trans_start = jiffies;
2190 spin_unlock(&pr->xmit_lock);
2191
2192 return NETDEV_TX_OK;
2193 }
2194
2195 static void ehea_vlan_rx_register(struct net_device *dev,
2196 struct vlan_group *grp)
2197 {
2198 struct ehea_port *port = netdev_priv(dev);
2199 struct ehea_adapter *adapter = port->adapter;
2200 struct hcp_ehea_port_cb1 *cb1;
2201 u64 hret;
2202
2203 port->vgrp = grp;
2204
2205 cb1 = kzalloc(PAGE_SIZE, GFP_KERNEL);
2206 if (!cb1) {
2207 ehea_error("no mem for cb1");
2208 goto out;
2209 }
2210
2211 memset(cb1->vlan_filter, 0, sizeof(cb1->vlan_filter));
2212
2213 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
2214 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2215 if (hret != H_SUCCESS)
2216 ehea_error("modify_ehea_port failed");
2217
2218 kfree(cb1);
2219 out:
2220 return;
2221 }
2222
2223 static void ehea_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
2224 {
2225 struct ehea_port *port = netdev_priv(dev);
2226 struct ehea_adapter *adapter = port->adapter;
2227 struct hcp_ehea_port_cb1 *cb1;
2228 int index;
2229 u64 hret;
2230
2231 cb1 = kzalloc(PAGE_SIZE, GFP_KERNEL);
2232 if (!cb1) {
2233 ehea_error("no mem for cb1");
2234 goto out;
2235 }
2236
2237 hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
2238 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2239 if (hret != H_SUCCESS) {
2240 ehea_error("query_ehea_port failed");
2241 goto out;
2242 }
2243
2244 index = (vid / 64);
2245 cb1->vlan_filter[index] |= ((u64)(0x8000000000000000 >> (vid & 0x3F)));
2246
2247 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
2248 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2249 if (hret != H_SUCCESS)
2250 ehea_error("modify_ehea_port failed");
2251 out:
2252 kfree(cb1);
2253 return;
2254 }
2255
2256 static void ehea_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
2257 {
2258 struct ehea_port *port = netdev_priv(dev);
2259 struct ehea_adapter *adapter = port->adapter;
2260 struct hcp_ehea_port_cb1 *cb1;
2261 int index;
2262 u64 hret;
2263
2264 vlan_group_set_device(port->vgrp, vid, NULL);
2265
2266 cb1 = kzalloc(PAGE_SIZE, GFP_KERNEL);
2267 if (!cb1) {
2268 ehea_error("no mem for cb1");
2269 goto out;
2270 }
2271
2272 hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
2273 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2274 if (hret != H_SUCCESS) {
2275 ehea_error("query_ehea_port failed");
2276 goto out;
2277 }
2278
2279 index = (vid / 64);
2280 cb1->vlan_filter[index] &= ~((u64)(0x8000000000000000 >> (vid & 0x3F)));
2281
2282 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
2283 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2284 if (hret != H_SUCCESS)
2285 ehea_error("modify_ehea_port failed");
2286 out:
2287 kfree(cb1);
2288 return;
2289 }
2290
2291 int ehea_activate_qp(struct ehea_adapter *adapter, struct ehea_qp *qp)
2292 {
2293 int ret = -EIO;
2294 u64 hret;
2295 u16 dummy16 = 0;
2296 u64 dummy64 = 0;
2297 struct hcp_modify_qp_cb0 *cb0;
2298
2299 cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL);
2300 if (!cb0) {
2301 ret = -ENOMEM;
2302 goto out;
2303 }
2304
2305 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2306 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2307 if (hret != H_SUCCESS) {
2308 ehea_error("query_ehea_qp failed (1)");
2309 goto out;
2310 }
2311
2312 cb0->qp_ctl_reg = H_QP_CR_STATE_INITIALIZED;
2313 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2314 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2315 &dummy64, &dummy64, &dummy16, &dummy16);
2316 if (hret != H_SUCCESS) {
2317 ehea_error("modify_ehea_qp failed (1)");
2318 goto out;
2319 }
2320
2321 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2322 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2323 if (hret != H_SUCCESS) {
2324 ehea_error("query_ehea_qp failed (2)");
2325 goto out;
2326 }
2327
2328 cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_INITIALIZED;
2329 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2330 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2331 &dummy64, &dummy64, &dummy16, &dummy16);
2332 if (hret != H_SUCCESS) {
2333 ehea_error("modify_ehea_qp failed (2)");
2334 goto out;
2335 }
2336
2337 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2338 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2339 if (hret != H_SUCCESS) {
2340 ehea_error("query_ehea_qp failed (3)");
2341 goto out;
2342 }
2343
2344 cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_RDY2SND;
2345 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2346 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2347 &dummy64, &dummy64, &dummy16, &dummy16);
2348 if (hret != H_SUCCESS) {
2349 ehea_error("modify_ehea_qp failed (3)");
2350 goto out;
2351 }
2352
2353 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2354 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2355 if (hret != H_SUCCESS) {
2356 ehea_error("query_ehea_qp failed (4)");
2357 goto out;
2358 }
2359
2360 ret = 0;
2361 out:
2362 kfree(cb0);
2363 return ret;
2364 }
2365
2366 static int ehea_port_res_setup(struct ehea_port *port, int def_qps,
2367 int add_tx_qps)
2368 {
2369 int ret, i;
2370 struct port_res_cfg pr_cfg, pr_cfg_small_rx;
2371 enum ehea_eq_type eq_type = EHEA_EQ;
2372
2373 port->qp_eq = ehea_create_eq(port->adapter, eq_type,
2374 EHEA_MAX_ENTRIES_EQ, 1);
2375 if (!port->qp_eq) {
2376 ret = -EINVAL;
2377 ehea_error("ehea_create_eq failed (qp_eq)");
2378 goto out_kill_eq;
2379 }
2380
2381 pr_cfg.max_entries_rcq = rq1_entries + rq2_entries + rq3_entries;
2382 pr_cfg.max_entries_scq = sq_entries * 2;
2383 pr_cfg.max_entries_sq = sq_entries;
2384 pr_cfg.max_entries_rq1 = rq1_entries;
2385 pr_cfg.max_entries_rq2 = rq2_entries;
2386 pr_cfg.max_entries_rq3 = rq3_entries;
2387
2388 pr_cfg_small_rx.max_entries_rcq = 1;
2389 pr_cfg_small_rx.max_entries_scq = sq_entries;
2390 pr_cfg_small_rx.max_entries_sq = sq_entries;
2391 pr_cfg_small_rx.max_entries_rq1 = 1;
2392 pr_cfg_small_rx.max_entries_rq2 = 1;
2393 pr_cfg_small_rx.max_entries_rq3 = 1;
2394
2395 for (i = 0; i < def_qps; i++) {
2396 ret = ehea_init_port_res(port, &port->port_res[i], &pr_cfg, i);
2397 if (ret)
2398 goto out_clean_pr;
2399 }
2400 for (i = def_qps; i < def_qps + add_tx_qps; i++) {
2401 ret = ehea_init_port_res(port, &port->port_res[i],
2402 &pr_cfg_small_rx, i);
2403 if (ret)
2404 goto out_clean_pr;
2405 }
2406
2407 return 0;
2408
2409 out_clean_pr:
2410 while (--i >= 0)
2411 ehea_clean_portres(port, &port->port_res[i]);
2412
2413 out_kill_eq:
2414 ehea_destroy_eq(port->qp_eq);
2415 return ret;
2416 }
2417
2418 static int ehea_clean_all_portres(struct ehea_port *port)
2419 {
2420 int ret = 0;
2421 int i;
2422
2423 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
2424 ret |= ehea_clean_portres(port, &port->port_res[i]);
2425
2426 ret |= ehea_destroy_eq(port->qp_eq);
2427
2428 return ret;
2429 }
2430
2431 static void ehea_remove_adapter_mr(struct ehea_adapter *adapter)
2432 {
2433 if (adapter->active_ports)
2434 return;
2435
2436 ehea_rem_mr(&adapter->mr);
2437 }
2438
2439 static int ehea_add_adapter_mr(struct ehea_adapter *adapter)
2440 {
2441 if (adapter->active_ports)
2442 return 0;
2443
2444 return ehea_reg_kernel_mr(adapter, &adapter->mr);
2445 }
2446
2447 static int ehea_up(struct net_device *dev)
2448 {
2449 int ret, i;
2450 struct ehea_port *port = netdev_priv(dev);
2451
2452 if (port->state == EHEA_PORT_UP)
2453 return 0;
2454
2455 down(&ehea_fw_handles.lock);
2456
2457 ret = ehea_port_res_setup(port, port->num_def_qps,
2458 port->num_add_tx_qps);
2459 if (ret) {
2460 ehea_error("port_res_failed");
2461 goto out;
2462 }
2463
2464 /* Set default QP for this port */
2465 ret = ehea_configure_port(port);
2466 if (ret) {
2467 ehea_error("ehea_configure_port failed. ret:%d", ret);
2468 goto out_clean_pr;
2469 }
2470
2471 ret = ehea_reg_interrupts(dev);
2472 if (ret) {
2473 ehea_error("reg_interrupts failed. ret:%d", ret);
2474 goto out_clean_pr;
2475 }
2476
2477 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
2478 ret = ehea_activate_qp(port->adapter, port->port_res[i].qp);
2479 if (ret) {
2480 ehea_error("activate_qp failed");
2481 goto out_free_irqs;
2482 }
2483 }
2484
2485 for (i = 0; i < port->num_def_qps; i++) {
2486 ret = ehea_fill_port_res(&port->port_res[i]);
2487 if (ret) {
2488 ehea_error("out_free_irqs");
2489 goto out_free_irqs;
2490 }
2491 }
2492
2493 down(&ehea_bcmc_regs.lock);
2494
2495 ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
2496 if (ret) {
2497 ret = -EIO;
2498 goto out_free_irqs;
2499 }
2500
2501 port->state = EHEA_PORT_UP;
2502
2503 ret = 0;
2504 goto out;
2505
2506 out_free_irqs:
2507 ehea_free_interrupts(dev);
2508
2509 out_clean_pr:
2510 ehea_clean_all_portres(port);
2511 out:
2512 if (ret)
2513 ehea_info("Failed starting %s. ret=%i", dev->name, ret);
2514
2515 ehea_update_bcmc_registrations();
2516 up(&ehea_bcmc_regs.lock);
2517
2518 ehea_update_firmware_handles();
2519 up(&ehea_fw_handles.lock);
2520
2521 return ret;
2522 }
2523
2524 static void port_napi_disable(struct ehea_port *port)
2525 {
2526 int i;
2527
2528 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
2529 napi_disable(&port->port_res[i].napi);
2530 }
2531
2532 static void port_napi_enable(struct ehea_port *port)
2533 {
2534 int i;
2535
2536 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
2537 napi_enable(&port->port_res[i].napi);
2538 }
2539
2540 static int ehea_open(struct net_device *dev)
2541 {
2542 int ret;
2543 struct ehea_port *port = netdev_priv(dev);
2544
2545 down(&port->port_lock);
2546
2547 if (netif_msg_ifup(port))
2548 ehea_info("enabling port %s", dev->name);
2549
2550 ret = ehea_up(dev);
2551 if (!ret) {
2552 port_napi_enable(port);
2553 netif_start_queue(dev);
2554 }
2555
2556 up(&port->port_lock);
2557
2558 return ret;
2559 }
2560
2561 static int ehea_down(struct net_device *dev)
2562 {
2563 int ret;
2564 struct ehea_port *port = netdev_priv(dev);
2565
2566 if (port->state == EHEA_PORT_DOWN)
2567 return 0;
2568
2569 down(&ehea_bcmc_regs.lock);
2570 ehea_drop_multicast_list(dev);
2571 ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
2572
2573 ehea_free_interrupts(dev);
2574
2575 down(&ehea_fw_handles.lock);
2576
2577 port->state = EHEA_PORT_DOWN;
2578
2579 ehea_update_bcmc_registrations();
2580 up(&ehea_bcmc_regs.lock);
2581
2582 ret = ehea_clean_all_portres(port);
2583 if (ret)
2584 ehea_info("Failed freeing resources for %s. ret=%i",
2585 dev->name, ret);
2586
2587 ehea_update_firmware_handles();
2588 up(&ehea_fw_handles.lock);
2589
2590 return ret;
2591 }
2592
2593 static int ehea_stop(struct net_device *dev)
2594 {
2595 int ret;
2596 struct ehea_port *port = netdev_priv(dev);
2597
2598 if (netif_msg_ifdown(port))
2599 ehea_info("disabling port %s", dev->name);
2600
2601 flush_scheduled_work();
2602 down(&port->port_lock);
2603 netif_stop_queue(dev);
2604 port_napi_disable(port);
2605 ret = ehea_down(dev);
2606 up(&port->port_lock);
2607 return ret;
2608 }
2609
2610 void ehea_purge_sq(struct ehea_qp *orig_qp)
2611 {
2612 struct ehea_qp qp = *orig_qp;
2613 struct ehea_qp_init_attr *init_attr = &qp.init_attr;
2614 struct ehea_swqe *swqe;
2615 int wqe_index;
2616 int i;
2617
2618 for (i = 0; i < init_attr->act_nr_send_wqes; i++) {
2619 swqe = ehea_get_swqe(&qp, &wqe_index);
2620 swqe->tx_control |= EHEA_SWQE_PURGE;
2621 }
2622 }
2623
2624 int ehea_stop_qps(struct net_device *dev)
2625 {
2626 struct ehea_port *port = netdev_priv(dev);
2627 struct ehea_adapter *adapter = port->adapter;
2628 struct hcp_modify_qp_cb0 *cb0;
2629 int ret = -EIO;
2630 int dret;
2631 int i;
2632 u64 hret;
2633 u64 dummy64 = 0;
2634 u16 dummy16 = 0;
2635
2636 cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL);
2637 if (!cb0) {
2638 ret = -ENOMEM;
2639 goto out;
2640 }
2641
2642 for (i = 0; i < (port->num_def_qps + port->num_add_tx_qps); i++) {
2643 struct ehea_port_res *pr = &port->port_res[i];
2644 struct ehea_qp *qp = pr->qp;
2645
2646 /* Purge send queue */
2647 ehea_purge_sq(qp);
2648
2649 /* Disable queue pair */
2650 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2651 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2652 cb0);
2653 if (hret != H_SUCCESS) {
2654 ehea_error("query_ehea_qp failed (1)");
2655 goto out;
2656 }
2657
2658 cb0->qp_ctl_reg = (cb0->qp_ctl_reg & H_QP_CR_RES_STATE) << 8;
2659 cb0->qp_ctl_reg &= ~H_QP_CR_ENABLED;
2660
2661 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2662 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG,
2663 1), cb0, &dummy64,
2664 &dummy64, &dummy16, &dummy16);
2665 if (hret != H_SUCCESS) {
2666 ehea_error("modify_ehea_qp failed (1)");
2667 goto out;
2668 }
2669
2670 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2671 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2672 cb0);
2673 if (hret != H_SUCCESS) {
2674 ehea_error("query_ehea_qp failed (2)");
2675 goto out;
2676 }
2677
2678 /* deregister shared memory regions */
2679 dret = ehea_rem_smrs(pr);
2680 if (dret) {
2681 ehea_error("unreg shared memory region failed");
2682 goto out;
2683 }
2684 }
2685
2686 ret = 0;
2687 out:
2688 kfree(cb0);
2689
2690 return ret;
2691 }
2692
2693 void ehea_update_rqs(struct ehea_qp *orig_qp, struct ehea_port_res *pr)
2694 {
2695 struct ehea_qp qp = *orig_qp;
2696 struct ehea_qp_init_attr *init_attr = &qp.init_attr;
2697 struct ehea_rwqe *rwqe;
2698 struct sk_buff **skba_rq2 = pr->rq2_skba.arr;
2699 struct sk_buff **skba_rq3 = pr->rq3_skba.arr;
2700 struct sk_buff *skb;
2701 u32 lkey = pr->recv_mr.lkey;
2702
2703
2704 int i;
2705 int index;
2706
2707 for (i = 0; i < init_attr->act_nr_rwqes_rq2 + 1; i++) {
2708 rwqe = ehea_get_next_rwqe(&qp, 2);
2709 rwqe->sg_list[0].l_key = lkey;
2710 index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, rwqe->wr_id);
2711 skb = skba_rq2[index];
2712 if (skb)
2713 rwqe->sg_list[0].vaddr = ehea_map_vaddr(skb->data);
2714 }
2715
2716 for (i = 0; i < init_attr->act_nr_rwqes_rq3 + 1; i++) {
2717 rwqe = ehea_get_next_rwqe(&qp, 3);
2718 rwqe->sg_list[0].l_key = lkey;
2719 index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, rwqe->wr_id);
2720 skb = skba_rq3[index];
2721 if (skb)
2722 rwqe->sg_list[0].vaddr = ehea_map_vaddr(skb->data);
2723 }
2724 }
2725
2726 int ehea_restart_qps(struct net_device *dev)
2727 {
2728 struct ehea_port *port = netdev_priv(dev);
2729 struct ehea_adapter *adapter = port->adapter;
2730 int ret = 0;
2731 int i;
2732
2733 struct hcp_modify_qp_cb0 *cb0;
2734 u64 hret;
2735 u64 dummy64 = 0;
2736 u16 dummy16 = 0;
2737
2738 cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL);
2739 if (!cb0) {
2740 ret = -ENOMEM;
2741 goto out;
2742 }
2743
2744 for (i = 0; i < (port->num_def_qps + port->num_add_tx_qps); i++) {
2745 struct ehea_port_res *pr = &port->port_res[i];
2746 struct ehea_qp *qp = pr->qp;
2747
2748 ret = ehea_gen_smrs(pr);
2749 if (ret) {
2750 ehea_error("creation of shared memory regions failed");
2751 goto out;
2752 }
2753
2754 ehea_update_rqs(qp, pr);
2755
2756 /* Enable queue pair */
2757 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2758 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2759 cb0);
2760 if (hret != H_SUCCESS) {
2761 ehea_error("query_ehea_qp failed (1)");
2762 goto out;
2763 }
2764
2765 cb0->qp_ctl_reg = (cb0->qp_ctl_reg & H_QP_CR_RES_STATE) << 8;
2766 cb0->qp_ctl_reg |= H_QP_CR_ENABLED;
2767
2768 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2769 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG,
2770 1), cb0, &dummy64,
2771 &dummy64, &dummy16, &dummy16);
2772 if (hret != H_SUCCESS) {
2773 ehea_error("modify_ehea_qp failed (1)");
2774 goto out;
2775 }
2776
2777 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2778 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2779 cb0);
2780 if (hret != H_SUCCESS) {
2781 ehea_error("query_ehea_qp failed (2)");
2782 goto out;
2783 }
2784
2785 /* refill entire queue */
2786 ehea_refill_rq1(pr, pr->rq1_skba.index, 0);
2787 ehea_refill_rq2(pr, 0);
2788 ehea_refill_rq3(pr, 0);
2789 }
2790 out:
2791 kfree(cb0);
2792
2793 return ret;
2794 }
2795
2796 static void ehea_reset_port(struct work_struct *work)
2797 {
2798 int ret;
2799 struct ehea_port *port =
2800 container_of(work, struct ehea_port, reset_task);
2801 struct net_device *dev = port->netdev;
2802
2803 port->resets++;
2804 down(&port->port_lock);
2805 netif_stop_queue(dev);
2806
2807 port_napi_disable(port);
2808
2809 ehea_down(dev);
2810
2811 ret = ehea_up(dev);
2812 if (ret)
2813 goto out;
2814
2815 ehea_set_multicast_list(dev);
2816
2817 if (netif_msg_timer(port))
2818 ehea_info("Device %s resetted successfully", dev->name);
2819
2820 port_napi_enable(port);
2821
2822 netif_wake_queue(dev);
2823 out:
2824 up(&port->port_lock);
2825 return;
2826 }
2827
2828 static void ehea_rereg_mrs(struct work_struct *work)
2829 {
2830 int ret, i;
2831 struct ehea_adapter *adapter;
2832
2833 down(&dlpar_mem_lock);
2834 ehea_info("LPAR memory enlarged - re-initializing driver");
2835
2836 list_for_each_entry(adapter, &adapter_list, list)
2837 if (adapter->active_ports) {
2838 /* Shutdown all ports */
2839 for (i = 0; i < EHEA_MAX_PORTS; i++) {
2840 struct ehea_port *port = adapter->port[i];
2841
2842 if (port) {
2843 struct net_device *dev = port->netdev;
2844
2845 if (dev->flags & IFF_UP) {
2846 down(&port->port_lock);
2847 netif_stop_queue(dev);
2848 ret = ehea_stop_qps(dev);
2849 if (ret) {
2850 up(&port->port_lock);
2851 goto out;
2852 }
2853 port_napi_disable(port);
2854 up(&port->port_lock);
2855 }
2856 }
2857 }
2858
2859 /* Unregister old memory region */
2860 ret = ehea_rem_mr(&adapter->mr);
2861 if (ret) {
2862 ehea_error("unregister MR failed - driver"
2863 " inoperable!");
2864 goto out;
2865 }
2866 }
2867
2868 ehea_destroy_busmap();
2869 ret = ehea_create_busmap();
2870 if (ret) {
2871 ehea_error("creating ehea busmap failed");
2872 goto out;
2873 }
2874
2875 clear_bit(__EHEA_STOP_XFER, &ehea_driver_flags);
2876
2877 list_for_each_entry(adapter, &adapter_list, list)
2878 if (adapter->active_ports) {
2879 /* Register new memory region */
2880 ret = ehea_reg_kernel_mr(adapter, &adapter->mr);
2881 if (ret) {
2882 ehea_error("register MR failed - driver"
2883 " inoperable!");
2884 goto out;
2885 }
2886
2887 /* Restart all ports */
2888 for (i = 0; i < EHEA_MAX_PORTS; i++) {
2889 struct ehea_port *port = adapter->port[i];
2890
2891 if (port) {
2892 struct net_device *dev = port->netdev;
2893
2894 if (dev->flags & IFF_UP) {
2895 down(&port->port_lock);
2896 port_napi_enable(port);
2897 ret = ehea_restart_qps(dev);
2898 if (!ret)
2899 netif_wake_queue(dev);
2900 up(&port->port_lock);
2901 }
2902 }
2903 }
2904 }
2905 up(&dlpar_mem_lock);
2906 ehea_info("re-initializing driver complete");
2907 out:
2908 return;
2909 }
2910
2911 static void ehea_tx_watchdog(struct net_device *dev)
2912 {
2913 struct ehea_port *port = netdev_priv(dev);
2914
2915 if (netif_carrier_ok(dev) &&
2916 !test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))
2917 schedule_work(&port->reset_task);
2918 }
2919
2920 int ehea_sense_adapter_attr(struct ehea_adapter *adapter)
2921 {
2922 struct hcp_query_ehea *cb;
2923 u64 hret;
2924 int ret;
2925
2926 cb = kzalloc(PAGE_SIZE, GFP_KERNEL);
2927 if (!cb) {
2928 ret = -ENOMEM;
2929 goto out;
2930 }
2931
2932 hret = ehea_h_query_ehea(adapter->handle, cb);
2933
2934 if (hret != H_SUCCESS) {
2935 ret = -EIO;
2936 goto out_herr;
2937 }
2938
2939 adapter->max_mc_mac = cb->max_mc_mac - 1;
2940 ret = 0;
2941
2942 out_herr:
2943 kfree(cb);
2944 out:
2945 return ret;
2946 }
2947
2948 int ehea_get_jumboframe_status(struct ehea_port *port, int *jumbo)
2949 {
2950 struct hcp_ehea_port_cb4 *cb4;
2951 u64 hret;
2952 int ret = 0;
2953
2954 *jumbo = 0;
2955
2956 /* (Try to) enable *jumbo frames */
2957 cb4 = kzalloc(PAGE_SIZE, GFP_KERNEL);
2958 if (!cb4) {
2959 ehea_error("no mem for cb4");
2960 ret = -ENOMEM;
2961 goto out;
2962 } else {
2963 hret = ehea_h_query_ehea_port(port->adapter->handle,
2964 port->logical_port_id,
2965 H_PORT_CB4,
2966 H_PORT_CB4_JUMBO, cb4);
2967 if (hret == H_SUCCESS) {
2968 if (cb4->jumbo_frame)
2969 *jumbo = 1;
2970 else {
2971 cb4->jumbo_frame = 1;
2972 hret = ehea_h_modify_ehea_port(port->adapter->
2973 handle,
2974 port->
2975 logical_port_id,
2976 H_PORT_CB4,
2977 H_PORT_CB4_JUMBO,
2978 cb4);
2979 if (hret == H_SUCCESS)
2980 *jumbo = 1;
2981 }
2982 } else
2983 ret = -EINVAL;
2984
2985 kfree(cb4);
2986 }
2987 out:
2988 return ret;
2989 }
2990
2991 static ssize_t ehea_show_port_id(struct device *dev,
2992 struct device_attribute *attr, char *buf)
2993 {
2994 struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev);
2995 return sprintf(buf, "%d", port->logical_port_id);
2996 }
2997
2998 static DEVICE_ATTR(log_port_id, S_IRUSR | S_IRGRP | S_IROTH, ehea_show_port_id,
2999 NULL);
3000
3001 static void __devinit logical_port_release(struct device *dev)
3002 {
3003 struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev);
3004 of_node_put(port->ofdev.node);
3005 }
3006
3007 static struct device *ehea_register_port(struct ehea_port *port,
3008 struct device_node *dn)
3009 {
3010 int ret;
3011
3012 port->ofdev.node = of_node_get(dn);
3013 port->ofdev.dev.parent = &port->adapter->ofdev->dev;
3014 port->ofdev.dev.bus = &ibmebus_bus_type;
3015
3016 sprintf(port->ofdev.dev.bus_id, "port%d", port_name_cnt++);
3017 port->ofdev.dev.release = logical_port_release;
3018
3019 ret = of_device_register(&port->ofdev);
3020 if (ret) {
3021 ehea_error("failed to register device. ret=%d", ret);
3022 goto out;
3023 }
3024
3025 ret = device_create_file(&port->ofdev.dev, &dev_attr_log_port_id);
3026 if (ret) {
3027 ehea_error("failed to register attributes, ret=%d", ret);
3028 goto out_unreg_of_dev;
3029 }
3030
3031 return &port->ofdev.dev;
3032
3033 out_unreg_of_dev:
3034 of_device_unregister(&port->ofdev);
3035 out:
3036 return NULL;
3037 }
3038
3039 static void ehea_unregister_port(struct ehea_port *port)
3040 {
3041 device_remove_file(&port->ofdev.dev, &dev_attr_log_port_id);
3042 of_device_unregister(&port->ofdev);
3043 }
3044
3045 struct ehea_port *ehea_setup_single_port(struct ehea_adapter *adapter,
3046 u32 logical_port_id,
3047 struct device_node *dn)
3048 {
3049 int ret;
3050 struct net_device *dev;
3051 struct ehea_port *port;
3052 struct device *port_dev;
3053 int jumbo;
3054
3055 /* allocate memory for the port structures */
3056 dev = alloc_etherdev(sizeof(struct ehea_port));
3057
3058 if (!dev) {
3059 ehea_error("no mem for net_device");
3060 ret = -ENOMEM;
3061 goto out_err;
3062 }
3063
3064 port = netdev_priv(dev);
3065
3066 sema_init(&port->port_lock, 1);
3067 port->state = EHEA_PORT_DOWN;
3068 port->sig_comp_iv = sq_entries / 10;
3069
3070 port->adapter = adapter;
3071 port->netdev = dev;
3072 port->logical_port_id = logical_port_id;
3073
3074 port->msg_enable = netif_msg_init(msg_level, EHEA_MSG_DEFAULT);
3075
3076 port->mc_list = kzalloc(sizeof(struct ehea_mc_list), GFP_KERNEL);
3077 if (!port->mc_list) {
3078 ret = -ENOMEM;
3079 goto out_free_ethdev;
3080 }
3081
3082 INIT_LIST_HEAD(&port->mc_list->list);
3083
3084 ret = ehea_sense_port_attr(port);
3085 if (ret)
3086 goto out_free_mc_list;
3087
3088 port_dev = ehea_register_port(port, dn);
3089 if (!port_dev)
3090 goto out_free_mc_list;
3091
3092 SET_NETDEV_DEV(dev, port_dev);
3093
3094 /* initialize net_device structure */
3095 memcpy(dev->dev_addr, &port->mac_addr, ETH_ALEN);
3096
3097 dev->open = ehea_open;
3098 #ifdef CONFIG_NET_POLL_CONTROLLER
3099 dev->poll_controller = ehea_netpoll;
3100 #endif
3101 dev->stop = ehea_stop;
3102 dev->hard_start_xmit = ehea_start_xmit;
3103 dev->get_stats = ehea_get_stats;
3104 dev->set_multicast_list = ehea_set_multicast_list;
3105 dev->set_mac_address = ehea_set_mac_addr;
3106 dev->change_mtu = ehea_change_mtu;
3107 dev->vlan_rx_register = ehea_vlan_rx_register;
3108 dev->vlan_rx_add_vid = ehea_vlan_rx_add_vid;
3109 dev->vlan_rx_kill_vid = ehea_vlan_rx_kill_vid;
3110 dev->features = NETIF_F_SG | NETIF_F_FRAGLIST | NETIF_F_TSO
3111 | NETIF_F_HIGHDMA | NETIF_F_HW_CSUM | NETIF_F_HW_VLAN_TX
3112 | NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_FILTER
3113 | NETIF_F_LLTX;
3114 dev->tx_timeout = &ehea_tx_watchdog;
3115 dev->watchdog_timeo = EHEA_WATCH_DOG_TIMEOUT;
3116
3117 INIT_WORK(&port->reset_task, ehea_reset_port);
3118 ehea_set_ethtool_ops(dev);
3119
3120 ret = register_netdev(dev);
3121 if (ret) {
3122 ehea_error("register_netdev failed. ret=%d", ret);
3123 goto out_unreg_port;
3124 }
3125
3126 port->lro_max_aggr = lro_max_aggr;
3127
3128 ret = ehea_get_jumboframe_status(port, &jumbo);
3129 if (ret)
3130 ehea_error("failed determining jumbo frame status for %s",
3131 port->netdev->name);
3132
3133 ehea_info("%s: Jumbo frames are %sabled", dev->name,
3134 jumbo == 1 ? "en" : "dis");
3135
3136 adapter->active_ports++;
3137
3138 return port;
3139
3140 out_unreg_port:
3141 ehea_unregister_port(port);
3142
3143 out_free_mc_list:
3144 kfree(port->mc_list);
3145
3146 out_free_ethdev:
3147 free_netdev(dev);
3148
3149 out_err:
3150 ehea_error("setting up logical port with id=%d failed, ret=%d",
3151 logical_port_id, ret);
3152 return NULL;
3153 }
3154
3155 static void ehea_shutdown_single_port(struct ehea_port *port)
3156 {
3157 unregister_netdev(port->netdev);
3158 ehea_unregister_port(port);
3159 kfree(port->mc_list);
3160 free_netdev(port->netdev);
3161 port->adapter->active_ports--;
3162 }
3163
3164 static int ehea_setup_ports(struct ehea_adapter *adapter)
3165 {
3166 struct device_node *lhea_dn;
3167 struct device_node *eth_dn = NULL;
3168
3169 const u32 *dn_log_port_id;
3170 int i = 0;
3171
3172 lhea_dn = adapter->ofdev->node;
3173 while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) {
3174
3175 dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no",
3176 NULL);
3177 if (!dn_log_port_id) {
3178 ehea_error("bad device node: eth_dn name=%s",
3179 eth_dn->full_name);
3180 continue;
3181 }
3182
3183 if (ehea_add_adapter_mr(adapter)) {
3184 ehea_error("creating MR failed");
3185 of_node_put(eth_dn);
3186 return -EIO;
3187 }
3188
3189 adapter->port[i] = ehea_setup_single_port(adapter,
3190 *dn_log_port_id,
3191 eth_dn);
3192 if (adapter->port[i])
3193 ehea_info("%s -> logical port id #%d",
3194 adapter->port[i]->netdev->name,
3195 *dn_log_port_id);
3196 else
3197 ehea_remove_adapter_mr(adapter);
3198
3199 i++;
3200 };
3201 return 0;
3202 }
3203
3204 static struct device_node *ehea_get_eth_dn(struct ehea_adapter *adapter,
3205 u32 logical_port_id)
3206 {
3207 struct device_node *lhea_dn;
3208 struct device_node *eth_dn = NULL;
3209 const u32 *dn_log_port_id;
3210
3211 lhea_dn = adapter->ofdev->node;
3212 while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) {
3213
3214 dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no",
3215 NULL);
3216 if (dn_log_port_id)
3217 if (*dn_log_port_id == logical_port_id)
3218 return eth_dn;
3219 };
3220
3221 return NULL;
3222 }
3223
3224 static ssize_t ehea_probe_port(struct device *dev,
3225 struct device_attribute *attr,
3226 const char *buf, size_t count)
3227 {
3228 struct ehea_adapter *adapter = dev->driver_data;
3229 struct ehea_port *port;
3230 struct device_node *eth_dn = NULL;
3231 int i;
3232
3233 u32 logical_port_id;
3234
3235 sscanf(buf, "%d", &logical_port_id);
3236
3237 port = ehea_get_port(adapter, logical_port_id);
3238
3239 if (port) {
3240 ehea_info("adding port with logical port id=%d failed. port "
3241 "already configured as %s.", logical_port_id,
3242 port->netdev->name);
3243 return -EINVAL;
3244 }
3245
3246 eth_dn = ehea_get_eth_dn(adapter, logical_port_id);
3247
3248 if (!eth_dn) {
3249 ehea_info("no logical port with id %d found", logical_port_id);
3250 return -EINVAL;
3251 }
3252
3253 if (ehea_add_adapter_mr(adapter)) {
3254 ehea_error("creating MR failed");
3255 return -EIO;
3256 }
3257
3258 port = ehea_setup_single_port(adapter, logical_port_id, eth_dn);
3259
3260 of_node_put(eth_dn);
3261
3262 if (port) {
3263 for (i = 0; i < EHEA_MAX_PORTS; i++)
3264 if (!adapter->port[i]) {
3265 adapter->port[i] = port;
3266 break;
3267 }
3268
3269 ehea_info("added %s (logical port id=%d)", port->netdev->name,
3270 logical_port_id);
3271 } else {
3272 ehea_remove_adapter_mr(adapter);
3273 return -EIO;
3274 }
3275
3276 return (ssize_t) count;
3277 }
3278
3279 static ssize_t ehea_remove_port(struct device *dev,
3280 struct device_attribute *attr,
3281 const char *buf, size_t count)
3282 {
3283 struct ehea_adapter *adapter = dev->driver_data;
3284 struct ehea_port *port;
3285 int i;
3286 u32 logical_port_id;
3287
3288 sscanf(buf, "%d", &logical_port_id);
3289
3290 port = ehea_get_port(adapter, logical_port_id);
3291
3292 if (port) {
3293 ehea_info("removed %s (logical port id=%d)", port->netdev->name,
3294 logical_port_id);
3295
3296 ehea_shutdown_single_port(port);
3297
3298 for (i = 0; i < EHEA_MAX_PORTS; i++)
3299 if (adapter->port[i] == port) {
3300 adapter->port[i] = NULL;
3301 break;
3302 }
3303 } else {
3304 ehea_error("removing port with logical port id=%d failed. port "
3305 "not configured.", logical_port_id);
3306 return -EINVAL;
3307 }
3308
3309 ehea_remove_adapter_mr(adapter);
3310
3311 return (ssize_t) count;
3312 }
3313
3314 static DEVICE_ATTR(probe_port, S_IWUSR, NULL, ehea_probe_port);
3315 static DEVICE_ATTR(remove_port, S_IWUSR, NULL, ehea_remove_port);
3316
3317 int ehea_create_device_sysfs(struct of_device *dev)
3318 {
3319 int ret = device_create_file(&dev->dev, &dev_attr_probe_port);
3320 if (ret)
3321 goto out;
3322
3323 ret = device_create_file(&dev->dev, &dev_attr_remove_port);
3324 out:
3325 return ret;
3326 }
3327
3328 void ehea_remove_device_sysfs(struct of_device *dev)
3329 {
3330 device_remove_file(&dev->dev, &dev_attr_probe_port);
3331 device_remove_file(&dev->dev, &dev_attr_remove_port);
3332 }
3333
3334 static int __devinit ehea_probe_adapter(struct of_device *dev,
3335 const struct of_device_id *id)
3336 {
3337 struct ehea_adapter *adapter;
3338 const u64 *adapter_handle;
3339 int ret;
3340
3341 if (!dev || !dev->node) {
3342 ehea_error("Invalid ibmebus device probed");
3343 return -EINVAL;
3344 }
3345 down(&ehea_fw_handles.lock);
3346
3347 adapter = kzalloc(sizeof(*adapter), GFP_KERNEL);
3348 if (!adapter) {
3349 ret = -ENOMEM;
3350 dev_err(&dev->dev, "no mem for ehea_adapter\n");
3351 goto out;
3352 }
3353
3354 list_add(&adapter->list, &adapter_list);
3355
3356 adapter->ofdev = dev;
3357
3358 adapter_handle = of_get_property(dev->node, "ibm,hea-handle",
3359 NULL);
3360 if (adapter_handle)
3361 adapter->handle = *adapter_handle;
3362
3363 if (!adapter->handle) {
3364 dev_err(&dev->dev, "failed getting handle for adapter"
3365 " '%s'\n", dev->node->full_name);
3366 ret = -ENODEV;
3367 goto out_free_ad;
3368 }
3369
3370 adapter->pd = EHEA_PD_ID;
3371
3372 dev->dev.driver_data = adapter;
3373
3374
3375 /* initialize adapter and ports */
3376 /* get adapter properties */
3377 ret = ehea_sense_adapter_attr(adapter);
3378 if (ret) {
3379 dev_err(&dev->dev, "sense_adapter_attr failed: %d\n", ret);
3380 goto out_free_ad;
3381 }
3382
3383 adapter->neq = ehea_create_eq(adapter,
3384 EHEA_NEQ, EHEA_MAX_ENTRIES_EQ, 1);
3385 if (!adapter->neq) {
3386 ret = -EIO;
3387 dev_err(&dev->dev, "NEQ creation failed\n");
3388 goto out_free_ad;
3389 }
3390
3391 tasklet_init(&adapter->neq_tasklet, ehea_neq_tasklet,
3392 (unsigned long)adapter);
3393
3394 ret = ibmebus_request_irq(adapter->neq->attr.ist1,
3395 ehea_interrupt_neq, IRQF_DISABLED,
3396 "ehea_neq", adapter);
3397 if (ret) {
3398 dev_err(&dev->dev, "requesting NEQ IRQ failed\n");
3399 goto out_kill_eq;
3400 }
3401
3402 ret = ehea_create_device_sysfs(dev);
3403 if (ret)
3404 goto out_free_irq;
3405
3406 ret = ehea_setup_ports(adapter);
3407 if (ret) {
3408 dev_err(&dev->dev, "setup_ports failed\n");
3409 goto out_rem_dev_sysfs;
3410 }
3411
3412 ret = 0;
3413 goto out;
3414
3415 out_rem_dev_sysfs:
3416 ehea_remove_device_sysfs(dev);
3417
3418 out_free_irq:
3419 ibmebus_free_irq(adapter->neq->attr.ist1, adapter);
3420
3421 out_kill_eq:
3422 ehea_destroy_eq(adapter->neq);
3423
3424 out_free_ad:
3425 kfree(adapter);
3426
3427 out:
3428 ehea_update_firmware_handles();
3429 up(&ehea_fw_handles.lock);
3430 return ret;
3431 }
3432
3433 static int __devexit ehea_remove(struct of_device *dev)
3434 {
3435 struct ehea_adapter *adapter = dev->dev.driver_data;
3436 int i;
3437
3438 for (i = 0; i < EHEA_MAX_PORTS; i++)
3439 if (adapter->port[i]) {
3440 ehea_shutdown_single_port(adapter->port[i]);
3441 adapter->port[i] = NULL;
3442 }
3443
3444 ehea_remove_device_sysfs(dev);
3445
3446 flush_scheduled_work();
3447
3448 down(&ehea_fw_handles.lock);
3449
3450 ibmebus_free_irq(adapter->neq->attr.ist1, adapter);
3451 tasklet_kill(&adapter->neq_tasklet);
3452
3453 ehea_destroy_eq(adapter->neq);
3454 ehea_remove_adapter_mr(adapter);
3455 list_del(&adapter->list);
3456 kfree(adapter);
3457
3458 ehea_update_firmware_handles();
3459 up(&ehea_fw_handles.lock);
3460
3461 return 0;
3462 }
3463
3464 void ehea_crash_handler(void)
3465 {
3466 int i;
3467
3468 if (ehea_fw_handles.arr)
3469 for (i = 0; i < ehea_fw_handles.num_entries; i++)
3470 ehea_h_free_resource(ehea_fw_handles.arr[i].adh,
3471 ehea_fw_handles.arr[i].fwh,
3472 FORCE_FREE);
3473
3474 if (ehea_bcmc_regs.arr)
3475 for (i = 0; i < ehea_bcmc_regs.num_entries; i++)
3476 ehea_h_reg_dereg_bcmc(ehea_bcmc_regs.arr[i].adh,
3477 ehea_bcmc_regs.arr[i].port_id,
3478 ehea_bcmc_regs.arr[i].reg_type,
3479 ehea_bcmc_regs.arr[i].macaddr,
3480 0, H_DEREG_BCMC);
3481 }
3482
3483 static int ehea_reboot_notifier(struct notifier_block *nb,
3484 unsigned long action, void *unused)
3485 {
3486 if (action == SYS_RESTART) {
3487 ehea_info("Reboot: freeing all eHEA resources");
3488 ibmebus_unregister_driver(&ehea_driver);
3489 }
3490 return NOTIFY_DONE;
3491 }
3492
3493 static struct notifier_block ehea_reboot_nb = {
3494 .notifier_call = ehea_reboot_notifier,
3495 };
3496
3497 static int check_module_parm(void)
3498 {
3499 int ret = 0;
3500
3501 if ((rq1_entries < EHEA_MIN_ENTRIES_QP) ||
3502 (rq1_entries > EHEA_MAX_ENTRIES_RQ1)) {
3503 ehea_info("Bad parameter: rq1_entries");
3504 ret = -EINVAL;
3505 }
3506 if ((rq2_entries < EHEA_MIN_ENTRIES_QP) ||
3507 (rq2_entries > EHEA_MAX_ENTRIES_RQ2)) {
3508 ehea_info("Bad parameter: rq2_entries");
3509 ret = -EINVAL;
3510 }
3511 if ((rq3_entries < EHEA_MIN_ENTRIES_QP) ||
3512 (rq3_entries > EHEA_MAX_ENTRIES_RQ3)) {
3513 ehea_info("Bad parameter: rq3_entries");
3514 ret = -EINVAL;
3515 }
3516 if ((sq_entries < EHEA_MIN_ENTRIES_QP) ||
3517 (sq_entries > EHEA_MAX_ENTRIES_SQ)) {
3518 ehea_info("Bad parameter: sq_entries");
3519 ret = -EINVAL;
3520 }
3521
3522 return ret;
3523 }
3524
3525 static ssize_t ehea_show_capabilities(struct device_driver *drv,
3526 char *buf)
3527 {
3528 return sprintf(buf, "%d", EHEA_CAPABILITIES);
3529 }
3530
3531 static DRIVER_ATTR(capabilities, S_IRUSR | S_IRGRP | S_IROTH,
3532 ehea_show_capabilities, NULL);
3533
3534 int __init ehea_module_init(void)
3535 {
3536 int ret;
3537
3538 printk(KERN_INFO "IBM eHEA ethernet device driver (Release %s)\n",
3539 DRV_VERSION);
3540
3541
3542 INIT_WORK(&ehea_rereg_mr_task, ehea_rereg_mrs);
3543 memset(&ehea_fw_handles, 0, sizeof(ehea_fw_handles));
3544 memset(&ehea_bcmc_regs, 0, sizeof(ehea_bcmc_regs));
3545
3546 sema_init(&dlpar_mem_lock, 1);
3547 sema_init(&ehea_fw_handles.lock, 1);
3548 sema_init(&ehea_bcmc_regs.lock, 1);
3549
3550 ret = check_module_parm();
3551 if (ret)
3552 goto out;
3553
3554 ret = ehea_create_busmap();
3555 if (ret)
3556 goto out;
3557
3558 ret = register_reboot_notifier(&ehea_reboot_nb);
3559 if (ret)
3560 ehea_info("failed registering reboot notifier");
3561
3562 ret = crash_shutdown_register(&ehea_crash_handler);
3563 if (ret)
3564 ehea_info("failed registering crash handler");
3565
3566 ret = ibmebus_register_driver(&ehea_driver);
3567 if (ret) {
3568 ehea_error("failed registering eHEA device driver on ebus");
3569 goto out2;
3570 }
3571
3572 ret = driver_create_file(&ehea_driver.driver,
3573 &driver_attr_capabilities);
3574 if (ret) {
3575 ehea_error("failed to register capabilities attribute, ret=%d",
3576 ret);
3577 goto out3;
3578 }
3579
3580 return ret;
3581
3582 out3:
3583 ibmebus_unregister_driver(&ehea_driver);
3584 out2:
3585 unregister_reboot_notifier(&ehea_reboot_nb);
3586 crash_shutdown_unregister(&ehea_crash_handler);
3587 out:
3588 return ret;
3589 }
3590
3591 static void __exit ehea_module_exit(void)
3592 {
3593 int ret;
3594
3595 flush_scheduled_work();
3596 driver_remove_file(&ehea_driver.driver, &driver_attr_capabilities);
3597 ibmebus_unregister_driver(&ehea_driver);
3598 unregister_reboot_notifier(&ehea_reboot_nb);
3599 ret = crash_shutdown_unregister(&ehea_crash_handler);
3600 if (ret)
3601 ehea_info("failed unregistering crash handler");
3602 kfree(ehea_fw_handles.arr);
3603 kfree(ehea_bcmc_regs.arr);
3604 ehea_destroy_busmap();
3605 }
3606
3607 module_init(ehea_module_init);
3608 module_exit(ehea_module_exit);
WRT350N Kernel Patches