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added 2.6.29.6 aldebaran kernel
[nao-ulib.git] / kernel / 2.6.29.6-aldebaran-rt / drivers / net / ehea / ehea_main.c
blob9a594142b4581da0b0468b3fb4682ba566665809
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 <linux/memory.h>
39 #include <asm/kexec.h>
40 #include <linux/mutex.h>
41
42 #include <net/ip.h>
43
44 #include "ehea.h"
45 #include "ehea_qmr.h"
46 #include "ehea_phyp.h"
47
48
49 MODULE_LICENSE("GPL");
50 MODULE_AUTHOR("Christoph Raisch <raisch@de.ibm.com>");
51 MODULE_DESCRIPTION("IBM eServer HEA Driver");
52 MODULE_VERSION(DRV_VERSION);
53
54
55 static int msg_level = -1;
56 static int rq1_entries = EHEA_DEF_ENTRIES_RQ1;
57 static int rq2_entries = EHEA_DEF_ENTRIES_RQ2;
58 static int rq3_entries = EHEA_DEF_ENTRIES_RQ3;
59 static int sq_entries = EHEA_DEF_ENTRIES_SQ;
60 static int use_mcs;
61 static int use_lro;
62 static int lro_max_aggr = EHEA_LRO_MAX_AGGR;
63 static int num_tx_qps = EHEA_NUM_TX_QP;
64 static int prop_carrier_state;
65
66 module_param(msg_level, int, 0);
67 module_param(rq1_entries, int, 0);
68 module_param(rq2_entries, int, 0);
69 module_param(rq3_entries, int, 0);
70 module_param(sq_entries, int, 0);
71 module_param(prop_carrier_state, int, 0);
72 module_param(use_mcs, int, 0);
73 module_param(use_lro, int, 0);
74 module_param(lro_max_aggr, int, 0);
75 module_param(num_tx_qps, int, 0);
76
77 MODULE_PARM_DESC(num_tx_qps, "Number of TX-QPS");
78 MODULE_PARM_DESC(msg_level, "msg_level");
79 MODULE_PARM_DESC(prop_carrier_state, "Propagate carrier state of physical "
80 "port to stack. 1:yes, 0:no. Default = 0 ");
81 MODULE_PARM_DESC(rq3_entries, "Number of entries for Receive Queue 3 "
82 "[2^x - 1], x = [6..14]. Default = "
83 __MODULE_STRING(EHEA_DEF_ENTRIES_RQ3) ")");
84 MODULE_PARM_DESC(rq2_entries, "Number of entries for Receive Queue 2 "
85 "[2^x - 1], x = [6..14]. Default = "
86 __MODULE_STRING(EHEA_DEF_ENTRIES_RQ2) ")");
87 MODULE_PARM_DESC(rq1_entries, "Number of entries for Receive Queue 1 "
88 "[2^x - 1], x = [6..14]. Default = "
89 __MODULE_STRING(EHEA_DEF_ENTRIES_RQ1) ")");
90 MODULE_PARM_DESC(sq_entries, " Number of entries for the Send Queue "
91 "[2^x - 1], x = [6..14]. Default = "
92 __MODULE_STRING(EHEA_DEF_ENTRIES_SQ) ")");
93 MODULE_PARM_DESC(use_mcs, " 0:NAPI, 1:Multiple receive queues, Default = 0 ");
94
95 MODULE_PARM_DESC(lro_max_aggr, " LRO: Max packets to be aggregated. Default = "
96 __MODULE_STRING(EHEA_LRO_MAX_AGGR));
97 MODULE_PARM_DESC(use_lro, " Large Receive Offload, 1: enable, 0: disable, "
98 "Default = 0");
99
100 static int port_name_cnt;
101 static LIST_HEAD(adapter_list);
102 static unsigned long ehea_driver_flags;
103 struct work_struct ehea_rereg_mr_task;
104 static DEFINE_MUTEX(dlpar_mem_lock);
105 struct ehea_fw_handle_array ehea_fw_handles;
106 struct ehea_bcmc_reg_array ehea_bcmc_regs;
107
108
109 static int __devinit ehea_probe_adapter(struct of_device *dev,
110 const struct of_device_id *id);
111
112 static int __devexit ehea_remove(struct of_device *dev);
113
114 static struct of_device_id ehea_device_table[] = {
115 {
116 .name = "lhea",
117 .compatible = "IBM,lhea",
118 },
119 {},
120 };
121 MODULE_DEVICE_TABLE(of, ehea_device_table);
122
123 static struct of_platform_driver ehea_driver = {
124 .name = "ehea",
125 .match_table = ehea_device_table,
126 .probe = ehea_probe_adapter,
127 .remove = ehea_remove,
128 };
129
130 void ehea_dump(void *adr, int len, char *msg)
131 {
132 int x;
133 unsigned char *deb = adr;
134 for (x = 0; x < len; x += 16) {
135 printk(DRV_NAME " %s adr=%p ofs=%04x %016llx %016llx\n", msg,
136 deb, x, *((u64 *)&deb[0]), *((u64 *)&deb[8]));
137 deb += 16;
138 }
139 }
140
141 void ehea_schedule_port_reset(struct ehea_port *port)
142 {
143 if (!test_bit(__EHEA_DISABLE_PORT_RESET, &port->flags))
144 schedule_work(&port->reset_task);
145 }
146
147 static void ehea_update_firmware_handles(void)
148 {
149 struct ehea_fw_handle_entry *arr = NULL;
150 struct ehea_adapter *adapter;
151 int num_adapters = 0;
152 int num_ports = 0;
153 int num_portres = 0;
154 int i = 0;
155 int num_fw_handles, k, l;
156
157 /* Determine number of handles */
158 list_for_each_entry(adapter, &adapter_list, list) {
159 num_adapters++;
160
161 for (k = 0; k < EHEA_MAX_PORTS; k++) {
162 struct ehea_port *port = adapter->port[k];
163
164 if (!port || (port->state != EHEA_PORT_UP))
165 continue;
166
167 num_ports++;
168 num_portres += port->num_def_qps + port->num_add_tx_qps;
169 }
170 }
171
172 num_fw_handles = num_adapters * EHEA_NUM_ADAPTER_FW_HANDLES +
173 num_ports * EHEA_NUM_PORT_FW_HANDLES +
174 num_portres * EHEA_NUM_PORTRES_FW_HANDLES;
175
176 if (num_fw_handles) {
177 arr = kzalloc(num_fw_handles * sizeof(*arr), GFP_KERNEL);
178 if (!arr)
179 return; /* Keep the existing array */
180 } else
181 goto out_update;
182
183 list_for_each_entry(adapter, &adapter_list, list) {
184 for (k = 0; k < EHEA_MAX_PORTS; k++) {
185 struct ehea_port *port = adapter->port[k];
186
187 if (!port || (port->state != EHEA_PORT_UP))
188 continue;
189
190 for (l = 0;
191 l < port->num_def_qps + port->num_add_tx_qps;
192 l++) {
193 struct ehea_port_res *pr = &port->port_res[l];
194
195 arr[i].adh = adapter->handle;
196 arr[i++].fwh = pr->qp->fw_handle;
197 arr[i].adh = adapter->handle;
198 arr[i++].fwh = pr->send_cq->fw_handle;
199 arr[i].adh = adapter->handle;
200 arr[i++].fwh = pr->recv_cq->fw_handle;
201 arr[i].adh = adapter->handle;
202 arr[i++].fwh = pr->eq->fw_handle;
203 arr[i].adh = adapter->handle;
204 arr[i++].fwh = pr->send_mr.handle;
205 arr[i].adh = adapter->handle;
206 arr[i++].fwh = pr->recv_mr.handle;
207 }
208 arr[i].adh = adapter->handle;
209 arr[i++].fwh = port->qp_eq->fw_handle;
210 }
211
212 arr[i].adh = adapter->handle;
213 arr[i++].fwh = adapter->neq->fw_handle;
214
215 if (adapter->mr.handle) {
216 arr[i].adh = adapter->handle;
217 arr[i++].fwh = adapter->mr.handle;
218 }
219 }
220
221 out_update:
222 kfree(ehea_fw_handles.arr);
223 ehea_fw_handles.arr = arr;
224 ehea_fw_handles.num_entries = i;
225 }
226
227 static void ehea_update_bcmc_registrations(void)
228 {
229 struct ehea_bcmc_reg_entry *arr = NULL;
230 struct ehea_adapter *adapter;
231 struct ehea_mc_list *mc_entry;
232 int num_registrations = 0;
233 int i = 0;
234 int k;
235
236 /* Determine number of registrations */
237 list_for_each_entry(adapter, &adapter_list, list)
238 for (k = 0; k < EHEA_MAX_PORTS; k++) {
239 struct ehea_port *port = adapter->port[k];
240
241 if (!port || (port->state != EHEA_PORT_UP))
242 continue;
243
244 num_registrations += 2; /* Broadcast registrations */
245
246 list_for_each_entry(mc_entry, &port->mc_list->list,list)
247 num_registrations += 2;
248 }
249
250 if (num_registrations) {
251 arr = kzalloc(num_registrations * sizeof(*arr), GFP_ATOMIC);
252 if (!arr)
253 return; /* Keep the existing array */
254 } else
255 goto out_update;
256
257 list_for_each_entry(adapter, &adapter_list, list) {
258 for (k = 0; k < EHEA_MAX_PORTS; k++) {
259 struct ehea_port *port = adapter->port[k];
260
261 if (!port || (port->state != EHEA_PORT_UP))
262 continue;
263
264 arr[i].adh = adapter->handle;
265 arr[i].port_id = port->logical_port_id;
266 arr[i].reg_type = EHEA_BCMC_BROADCAST |
267 EHEA_BCMC_UNTAGGED;
268 arr[i++].macaddr = port->mac_addr;
269
270 arr[i].adh = adapter->handle;
271 arr[i].port_id = port->logical_port_id;
272 arr[i].reg_type = EHEA_BCMC_BROADCAST |
273 EHEA_BCMC_VLANID_ALL;
274 arr[i++].macaddr = port->mac_addr;
275
276 list_for_each_entry(mc_entry,
277 &port->mc_list->list, list) {
278 arr[i].adh = adapter->handle;
279 arr[i].port_id = port->logical_port_id;
280 arr[i].reg_type = EHEA_BCMC_SCOPE_ALL |
281 EHEA_BCMC_MULTICAST |
282 EHEA_BCMC_UNTAGGED;
283 arr[i++].macaddr = mc_entry->macaddr;
284
285 arr[i].adh = adapter->handle;
286 arr[i].port_id = port->logical_port_id;
287 arr[i].reg_type = EHEA_BCMC_SCOPE_ALL |
288 EHEA_BCMC_MULTICAST |
289 EHEA_BCMC_VLANID_ALL;
290 arr[i++].macaddr = mc_entry->macaddr;
291 }
292 }
293 }
294
295 out_update:
296 kfree(ehea_bcmc_regs.arr);
297 ehea_bcmc_regs.arr = arr;
298 ehea_bcmc_regs.num_entries = i;
299 }
300
301 static struct net_device_stats *ehea_get_stats(struct net_device *dev)
302 {
303 struct ehea_port *port = netdev_priv(dev);
304 struct net_device_stats *stats = &port->stats;
305 struct hcp_ehea_port_cb2 *cb2;
306 u64 hret, rx_packets, tx_packets;
307 int i;
308
309 memset(stats, 0, sizeof(*stats));
310
311 cb2 = kzalloc(PAGE_SIZE, GFP_ATOMIC);
312 if (!cb2) {
313 ehea_error("no mem for cb2");
314 goto out;
315 }
316
317 hret = ehea_h_query_ehea_port(port->adapter->handle,
318 port->logical_port_id,
319 H_PORT_CB2, H_PORT_CB2_ALL, cb2);
320 if (hret != H_SUCCESS) {
321 ehea_error("query_ehea_port failed");
322 goto out_herr;
323 }
324
325 if (netif_msg_hw(port))
326 ehea_dump(cb2, sizeof(*cb2), "net_device_stats");
327
328 rx_packets = 0;
329 for (i = 0; i < port->num_def_qps; i++)
330 rx_packets += port->port_res[i].rx_packets;
331
332 tx_packets = 0;
333 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
334 tx_packets += port->port_res[i].tx_packets;
335
336 stats->tx_packets = tx_packets;
337 stats->multicast = cb2->rxmcp;
338 stats->rx_errors = cb2->rxuerr;
339 stats->rx_bytes = cb2->rxo;
340 stats->tx_bytes = cb2->txo;
341 stats->rx_packets = rx_packets;
342
343 out_herr:
344 kfree(cb2);
345 out:
346 return stats;
347 }
348
349 static void ehea_refill_rq1(struct ehea_port_res *pr, int index, int nr_of_wqes)
350 {
351 struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
352 struct net_device *dev = pr->port->netdev;
353 int max_index_mask = pr->rq1_skba.len - 1;
354 int fill_wqes = pr->rq1_skba.os_skbs + nr_of_wqes;
355 int adder = 0;
356 int i;
357
358 pr->rq1_skba.os_skbs = 0;
359
360 if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) {
361 if (nr_of_wqes > 0)
362 pr->rq1_skba.index = index;
363 pr->rq1_skba.os_skbs = fill_wqes;
364 return;
365 }
366
367 for (i = 0; i < fill_wqes; i++) {
368 if (!skb_arr_rq1[index]) {
369 skb_arr_rq1[index] = netdev_alloc_skb(dev,
370 EHEA_L_PKT_SIZE);
371 if (!skb_arr_rq1[index]) {
372 pr->rq1_skba.os_skbs = fill_wqes - i;
373 ehea_error("%s: no mem for skb/%d wqes filled",
374 dev->name, i);
375 break;
376 }
377 }
378 index--;
379 index &= max_index_mask;
380 adder++;
381 }
382
383 if (adder == 0)
384 return;
385
386 /* Ring doorbell */
387 ehea_update_rq1a(pr->qp, adder);
388 }
389
390 static int ehea_init_fill_rq1(struct ehea_port_res *pr, int nr_rq1a)
391 {
392 int ret = 0;
393 struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
394 struct net_device *dev = pr->port->netdev;
395 int i;
396
397 for (i = 0; i < pr->rq1_skba.len; i++) {
398 skb_arr_rq1[i] = netdev_alloc_skb(dev, EHEA_L_PKT_SIZE);
399 if (!skb_arr_rq1[i]) {
400 ehea_error("%s: no mem for skb/%d wqes filled",
401 dev->name, i);
402 ret = -ENOMEM;
403 goto out;
404 }
405 }
406 /* Ring doorbell */
407 ehea_update_rq1a(pr->qp, nr_rq1a);
408 out:
409 return ret;
410 }
411
412 static int ehea_refill_rq_def(struct ehea_port_res *pr,
413 struct ehea_q_skb_arr *q_skba, int rq_nr,
414 int num_wqes, int wqe_type, int packet_size)
415 {
416 struct net_device *dev = pr->port->netdev;
417 struct ehea_qp *qp = pr->qp;
418 struct sk_buff **skb_arr = q_skba->arr;
419 struct ehea_rwqe *rwqe;
420 int i, index, max_index_mask, fill_wqes;
421 int adder = 0;
422 int ret = 0;
423
424 fill_wqes = q_skba->os_skbs + num_wqes;
425 q_skba->os_skbs = 0;
426
427 if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) {
428 q_skba->os_skbs = fill_wqes;
429 return ret;
430 }
431
432 index = q_skba->index;
433 max_index_mask = q_skba->len - 1;
434 for (i = 0; i < fill_wqes; i++) {
435 u64 tmp_addr;
436 struct sk_buff *skb = netdev_alloc_skb(dev, packet_size);
437 if (!skb) {
438 ehea_error("%s: no mem for skb/%d wqes filled",
439 pr->port->netdev->name, i);
440 q_skba->os_skbs = fill_wqes - i;
441 ret = -ENOMEM;
442 break;
443 }
444 skb_reserve(skb, NET_IP_ALIGN);
445
446 skb_arr[index] = skb;
447 tmp_addr = ehea_map_vaddr(skb->data);
448 if (tmp_addr == -1) {
449 dev_kfree_skb(skb);
450 q_skba->os_skbs = fill_wqes - i;
451 ret = 0;
452 break;
453 }
454
455 rwqe = ehea_get_next_rwqe(qp, rq_nr);
456 rwqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, wqe_type)
457 | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, index);
458 rwqe->sg_list[0].l_key = pr->recv_mr.lkey;
459 rwqe->sg_list[0].vaddr = tmp_addr;
460 rwqe->sg_list[0].len = packet_size;
461 rwqe->data_segments = 1;
462
463 index++;
464 index &= max_index_mask;
465 adder++;
466 }
467
468 q_skba->index = index;
469 if (adder == 0)
470 goto out;
471
472 /* Ring doorbell */
473 iosync();
474 if (rq_nr == 2)
475 ehea_update_rq2a(pr->qp, adder);
476 else
477 ehea_update_rq3a(pr->qp, adder);
478 out:
479 return ret;
480 }
481
482
483 static int ehea_refill_rq2(struct ehea_port_res *pr, int nr_of_wqes)
484 {
485 return ehea_refill_rq_def(pr, &pr->rq2_skba, 2,
486 nr_of_wqes, EHEA_RWQE2_TYPE,
487 EHEA_RQ2_PKT_SIZE + NET_IP_ALIGN);
488 }
489
490
491 static int ehea_refill_rq3(struct ehea_port_res *pr, int nr_of_wqes)
492 {
493 return ehea_refill_rq_def(pr, &pr->rq3_skba, 3,
494 nr_of_wqes, EHEA_RWQE3_TYPE,
495 EHEA_MAX_PACKET_SIZE + NET_IP_ALIGN);
496 }
497
498 static inline int ehea_check_cqe(struct ehea_cqe *cqe, int *rq_num)
499 {
500 *rq_num = (cqe->type & EHEA_CQE_TYPE_RQ) >> 5;
501 if ((cqe->status & EHEA_CQE_STAT_ERR_MASK) == 0)
502 return 0;
503 if (((cqe->status & EHEA_CQE_STAT_ERR_TCP) != 0) &&
504 (cqe->header_length == 0))
505 return 0;
506 return -EINVAL;
507 }
508
509 static inline void ehea_fill_skb(struct net_device *dev,
510 struct sk_buff *skb, struct ehea_cqe *cqe)
511 {
512 int length = cqe->num_bytes_transfered - 4; /*remove CRC */
513
514 skb_put(skb, length);
515 skb->ip_summed = CHECKSUM_UNNECESSARY;
516 skb->protocol = eth_type_trans(skb, dev);
517 }
518
519 static inline struct sk_buff *get_skb_by_index(struct sk_buff **skb_array,
520 int arr_len,
521 struct ehea_cqe *cqe)
522 {
523 int skb_index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, cqe->wr_id);
524 struct sk_buff *skb;
525 void *pref;
526 int x;
527
528 x = skb_index + 1;
529 x &= (arr_len - 1);
530
531 pref = skb_array[x];
532 if (pref) {
533 prefetchw(pref);
534 prefetchw(pref + EHEA_CACHE_LINE);
535
536 pref = (skb_array[x]->data);
537 prefetch(pref);
538 prefetch(pref + EHEA_CACHE_LINE);
539 prefetch(pref + EHEA_CACHE_LINE * 2);
540 prefetch(pref + EHEA_CACHE_LINE * 3);
541 }
542
543 skb = skb_array[skb_index];
544 skb_array[skb_index] = NULL;
545 return skb;
546 }
547
548 static inline struct sk_buff *get_skb_by_index_ll(struct sk_buff **skb_array,
549 int arr_len, int wqe_index)
550 {
551 struct sk_buff *skb;
552 void *pref;
553 int x;
554
555 x = wqe_index + 1;
556 x &= (arr_len - 1);
557
558 pref = skb_array[x];
559 if (pref) {
560 prefetchw(pref);
561 prefetchw(pref + EHEA_CACHE_LINE);
562
563 pref = (skb_array[x]->data);
564 prefetchw(pref);
565 prefetchw(pref + EHEA_CACHE_LINE);
566 }
567
568 skb = skb_array[wqe_index];
569 skb_array[wqe_index] = NULL;
570 return skb;
571 }
572
573 static int ehea_treat_poll_error(struct ehea_port_res *pr, int rq,
574 struct ehea_cqe *cqe, int *processed_rq2,
575 int *processed_rq3)
576 {
577 struct sk_buff *skb;
578
579 if (cqe->status & EHEA_CQE_STAT_ERR_TCP)
580 pr->p_stats.err_tcp_cksum++;
581 if (cqe->status & EHEA_CQE_STAT_ERR_IP)
582 pr->p_stats.err_ip_cksum++;
583 if (cqe->status & EHEA_CQE_STAT_ERR_CRC)
584 pr->p_stats.err_frame_crc++;
585
586 if (rq == 2) {
587 *processed_rq2 += 1;
588 skb = get_skb_by_index(pr->rq2_skba.arr, pr->rq2_skba.len, cqe);
589 dev_kfree_skb(skb);
590 } else if (rq == 3) {
591 *processed_rq3 += 1;
592 skb = get_skb_by_index(pr->rq3_skba.arr, pr->rq3_skba.len, cqe);
593 dev_kfree_skb(skb);
594 }
595
596 if (cqe->status & EHEA_CQE_STAT_FAT_ERR_MASK) {
597 if (netif_msg_rx_err(pr->port)) {
598 ehea_error("Critical receive error for QP %d. "
599 "Resetting port.", pr->qp->init_attr.qp_nr);
600 ehea_dump(cqe, sizeof(*cqe), "CQE");
601 }
602 ehea_schedule_port_reset(pr->port);
603 return 1;
604 }
605
606 return 0;
607 }
608
609 static int get_skb_hdr(struct sk_buff *skb, void **iphdr,
610 void **tcph, u64 *hdr_flags, void *priv)
611 {
612 struct ehea_cqe *cqe = priv;
613 unsigned int ip_len;
614 struct iphdr *iph;
615
616 /* non tcp/udp packets */
617 if (!cqe->header_length)
618 return -1;
619
620 /* non tcp packet */
621 skb_reset_network_header(skb);
622 iph = ip_hdr(skb);
623 if (iph->protocol != IPPROTO_TCP)
624 return -1;
625
626 ip_len = ip_hdrlen(skb);
627 skb_set_transport_header(skb, ip_len);
628 *tcph = tcp_hdr(skb);
629
630 /* check if ip header and tcp header are complete */
631 if (ntohs(iph->tot_len) < ip_len + tcp_hdrlen(skb))
632 return -1;
633
634 *hdr_flags = LRO_IPV4 | LRO_TCP;
635 *iphdr = iph;
636
637 return 0;
638 }
639
640 static void ehea_proc_skb(struct ehea_port_res *pr, struct ehea_cqe *cqe,
641 struct sk_buff *skb)
642 {
643 int vlan_extracted = (cqe->status & EHEA_CQE_VLAN_TAG_XTRACT)
644 && pr->port->vgrp;
645
646 if (use_lro) {
647 if (vlan_extracted)
648 lro_vlan_hwaccel_receive_skb(&pr->lro_mgr, skb,
649 pr->port->vgrp,
650 cqe->vlan_tag,
651 cqe);
652 else
653 lro_receive_skb(&pr->lro_mgr, skb, cqe);
654 } else {
655 if (vlan_extracted)
656 vlan_hwaccel_receive_skb(skb, pr->port->vgrp,
657 cqe->vlan_tag);
658 else
659 netif_receive_skb(skb);
660 }
661 }
662
663 static int ehea_proc_rwqes(struct net_device *dev,
664 struct ehea_port_res *pr,
665 int budget)
666 {
667 struct ehea_port *port = pr->port;
668 struct ehea_qp *qp = pr->qp;
669 struct ehea_cqe *cqe;
670 struct sk_buff *skb;
671 struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
672 struct sk_buff **skb_arr_rq2 = pr->rq2_skba.arr;
673 struct sk_buff **skb_arr_rq3 = pr->rq3_skba.arr;
674 int skb_arr_rq1_len = pr->rq1_skba.len;
675 int skb_arr_rq2_len = pr->rq2_skba.len;
676 int skb_arr_rq3_len = pr->rq3_skba.len;
677 int processed, processed_rq1, processed_rq2, processed_rq3;
678 int wqe_index, last_wqe_index, rq, port_reset;
679
680 processed = processed_rq1 = processed_rq2 = processed_rq3 = 0;
681 last_wqe_index = 0;
682
683 cqe = ehea_poll_rq1(qp, &wqe_index);
684 while ((processed < budget) && cqe) {
685 ehea_inc_rq1(qp);
686 processed_rq1++;
687 processed++;
688 if (netif_msg_rx_status(port))
689 ehea_dump(cqe, sizeof(*cqe), "CQE");
690
691 last_wqe_index = wqe_index;
692 rmb();
693 if (!ehea_check_cqe(cqe, &rq)) {
694 if (rq == 1) {
695 /* LL RQ1 */
696 skb = get_skb_by_index_ll(skb_arr_rq1,
697 skb_arr_rq1_len,
698 wqe_index);
699 if (unlikely(!skb)) {
700 if (netif_msg_rx_err(port))
701 ehea_error("LL rq1: skb=NULL");
702
703 skb = netdev_alloc_skb(dev,
704 EHEA_L_PKT_SIZE);
705 if (!skb)
706 break;
707 }
708 skb_copy_to_linear_data(skb, ((char *)cqe) + 64,
709 cqe->num_bytes_transfered - 4);
710 ehea_fill_skb(dev, skb, cqe);
711 } else if (rq == 2) {
712 /* RQ2 */
713 skb = get_skb_by_index(skb_arr_rq2,
714 skb_arr_rq2_len, cqe);
715 if (unlikely(!skb)) {
716 if (netif_msg_rx_err(port))
717 ehea_error("rq2: skb=NULL");
718 break;
719 }
720 ehea_fill_skb(dev, skb, cqe);
721 processed_rq2++;
722 } else {
723 /* RQ3 */
724 skb = get_skb_by_index(skb_arr_rq3,
725 skb_arr_rq3_len, cqe);
726 if (unlikely(!skb)) {
727 if (netif_msg_rx_err(port))
728 ehea_error("rq3: skb=NULL");
729 break;
730 }
731 ehea_fill_skb(dev, skb, cqe);
732 processed_rq3++;
733 }
734
735 ehea_proc_skb(pr, cqe, skb);
736 } else {
737 pr->p_stats.poll_receive_errors++;
738 port_reset = ehea_treat_poll_error(pr, rq, cqe,
739 &processed_rq2,
740 &processed_rq3);
741 if (port_reset)
742 break;
743 }
744 cqe = ehea_poll_rq1(qp, &wqe_index);
745 }
746 if (use_lro)
747 lro_flush_all(&pr->lro_mgr);
748
749 pr->rx_packets += processed;
750
751 ehea_refill_rq1(pr, last_wqe_index, processed_rq1);
752 ehea_refill_rq2(pr, processed_rq2);
753 ehea_refill_rq3(pr, processed_rq3);
754
755 return processed;
756 }
757
758 static struct ehea_cqe *ehea_proc_cqes(struct ehea_port_res *pr, int my_quota)
759 {
760 struct sk_buff *skb;
761 struct ehea_cq *send_cq = pr->send_cq;
762 struct ehea_cqe *cqe;
763 int quota = my_quota;
764 int cqe_counter = 0;
765 int swqe_av = 0;
766 int index;
767 unsigned long flags;
768
769 cqe = ehea_poll_cq(send_cq);
770 while (cqe && (quota > 0)) {
771 ehea_inc_cq(send_cq);
772
773 cqe_counter++;
774 rmb();
775 if (cqe->status & EHEA_CQE_STAT_ERR_MASK) {
776 ehea_error("Send Completion Error: Resetting port");
777 if (netif_msg_tx_err(pr->port))
778 ehea_dump(cqe, sizeof(*cqe), "Send CQE");
779 ehea_schedule_port_reset(pr->port);
780 break;
781 }
782
783 if (netif_msg_tx_done(pr->port))
784 ehea_dump(cqe, sizeof(*cqe), "CQE");
785
786 if (likely(EHEA_BMASK_GET(EHEA_WR_ID_TYPE, cqe->wr_id)
787 == EHEA_SWQE2_TYPE)) {
788
789 index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, cqe->wr_id);
790 skb = pr->sq_skba.arr[index];
791 dev_kfree_skb(skb);
792 pr->sq_skba.arr[index] = NULL;
793 }
794
795 swqe_av += EHEA_BMASK_GET(EHEA_WR_ID_REFILL, cqe->wr_id);
796 quota--;
797
798 cqe = ehea_poll_cq(send_cq);
799 };
800
801 ehea_update_feca(send_cq, cqe_counter);
802 atomic_add(swqe_av, &pr->swqe_avail);
803
804 spin_lock_irqsave(&pr->netif_queue, flags);
805
806 if (pr->queue_stopped && (atomic_read(&pr->swqe_avail)
807 >= pr->swqe_refill_th)) {
808 netif_wake_queue(pr->port->netdev);
809 pr->queue_stopped = 0;
810 }
811 spin_unlock_irqrestore(&pr->netif_queue, flags);
812
813 return cqe;
814 }
815
816 #define EHEA_NAPI_POLL_NUM_BEFORE_IRQ 16
817 #define EHEA_POLL_MAX_CQES 65535
818
819 static int ehea_poll(struct napi_struct *napi, int budget)
820 {
821 struct ehea_port_res *pr = container_of(napi, struct ehea_port_res,
822 napi);
823 struct net_device *dev = pr->port->netdev;
824 struct ehea_cqe *cqe;
825 struct ehea_cqe *cqe_skb = NULL;
826 int force_irq, wqe_index;
827 int rx = 0;
828
829 force_irq = (pr->poll_counter > EHEA_NAPI_POLL_NUM_BEFORE_IRQ);
830 cqe_skb = ehea_proc_cqes(pr, EHEA_POLL_MAX_CQES);
831
832 if (!force_irq)
833 rx += ehea_proc_rwqes(dev, pr, budget - rx);
834
835 while ((rx != budget) || force_irq) {
836 pr->poll_counter = 0;
837 force_irq = 0;
838 netif_rx_complete(napi);
839 ehea_reset_cq_ep(pr->recv_cq);
840 ehea_reset_cq_ep(pr->send_cq);
841 ehea_reset_cq_n1(pr->recv_cq);
842 ehea_reset_cq_n1(pr->send_cq);
843 cqe = ehea_poll_rq1(pr->qp, &wqe_index);
844 cqe_skb = ehea_poll_cq(pr->send_cq);
845
846 if (!cqe && !cqe_skb)
847 return rx;
848
849 if (!netif_rx_reschedule(napi))
850 return rx;
851
852 cqe_skb = ehea_proc_cqes(pr, EHEA_POLL_MAX_CQES);
853 rx += ehea_proc_rwqes(dev, pr, budget - rx);
854 }
855
856 pr->poll_counter++;
857 return rx;
858 }
859
860 #ifdef CONFIG_NET_POLL_CONTROLLER
861 static void ehea_netpoll(struct net_device *dev)
862 {
863 struct ehea_port *port = netdev_priv(dev);
864 int i;
865
866 for (i = 0; i < port->num_def_qps; i++)
867 netif_rx_schedule(&port->port_res[i].napi);
868 }
869 #endif
870
871 static irqreturn_t ehea_recv_irq_handler(int irq, void *param)
872 {
873 struct ehea_port_res *pr = param;
874
875 netif_rx_schedule(&pr->napi);
876
877 return IRQ_HANDLED;
878 }
879
880 static irqreturn_t ehea_qp_aff_irq_handler(int irq, void *param)
881 {
882 struct ehea_port *port = param;
883 struct ehea_eqe *eqe;
884 struct ehea_qp *qp;
885 u32 qp_token;
886
887 eqe = ehea_poll_eq(port->qp_eq);
888
889 while (eqe) {
890 qp_token = EHEA_BMASK_GET(EHEA_EQE_QP_TOKEN, eqe->entry);
891 ehea_error("QP aff_err: entry=0x%llx, token=0x%x",
892 eqe->entry, qp_token);
893
894 qp = port->port_res[qp_token].qp;
895 ehea_error_data(port->adapter, qp->fw_handle);
896 eqe = ehea_poll_eq(port->qp_eq);
897 }
898
899 ehea_schedule_port_reset(port);
900
901 return IRQ_HANDLED;
902 }
903
904 static struct ehea_port *ehea_get_port(struct ehea_adapter *adapter,
905 int logical_port)
906 {
907 int i;
908
909 for (i = 0; i < EHEA_MAX_PORTS; i++)
910 if (adapter->port[i])
911 if (adapter->port[i]->logical_port_id == logical_port)
912 return adapter->port[i];
913 return NULL;
914 }
915
916 int ehea_sense_port_attr(struct ehea_port *port)
917 {
918 int ret;
919 u64 hret;
920 struct hcp_ehea_port_cb0 *cb0;
921
922 /* may be called via ehea_neq_tasklet() */
923 cb0 = kzalloc(PAGE_SIZE, GFP_ATOMIC);
924 if (!cb0) {
925 ehea_error("no mem for cb0");
926 ret = -ENOMEM;
927 goto out;
928 }
929
930 hret = ehea_h_query_ehea_port(port->adapter->handle,
931 port->logical_port_id, H_PORT_CB0,
932 EHEA_BMASK_SET(H_PORT_CB0_ALL, 0xFFFF),
933 cb0);
934 if (hret != H_SUCCESS) {
935 ret = -EIO;
936 goto out_free;
937 }
938
939 /* MAC address */
940 port->mac_addr = cb0->port_mac_addr << 16;
941
942 if (!is_valid_ether_addr((u8 *)&port->mac_addr)) {
943 ret = -EADDRNOTAVAIL;
944 goto out_free;
945 }
946
947 /* Port speed */
948 switch (cb0->port_speed) {
949 case H_SPEED_10M_H:
950 port->port_speed = EHEA_SPEED_10M;
951 port->full_duplex = 0;
952 break;
953 case H_SPEED_10M_F:
954 port->port_speed = EHEA_SPEED_10M;
955 port->full_duplex = 1;
956 break;
957 case H_SPEED_100M_H:
958 port->port_speed = EHEA_SPEED_100M;
959 port->full_duplex = 0;
960 break;
961 case H_SPEED_100M_F:
962 port->port_speed = EHEA_SPEED_100M;
963 port->full_duplex = 1;
964 break;
965 case H_SPEED_1G_F:
966 port->port_speed = EHEA_SPEED_1G;
967 port->full_duplex = 1;
968 break;
969 case H_SPEED_10G_F:
970 port->port_speed = EHEA_SPEED_10G;
971 port->full_duplex = 1;
972 break;
973 default:
974 port->port_speed = 0;
975 port->full_duplex = 0;
976 break;
977 }
978
979 port->autoneg = 1;
980 port->num_mcs = cb0->num_default_qps;
981
982 /* Number of default QPs */
983 if (use_mcs)
984 port->num_def_qps = cb0->num_default_qps;
985 else
986 port->num_def_qps = 1;
987
988 if (!port->num_def_qps) {
989 ret = -EINVAL;
990 goto out_free;
991 }
992
993 port->num_tx_qps = num_tx_qps;
994
995 if (port->num_def_qps >= port->num_tx_qps)
996 port->num_add_tx_qps = 0;
997 else
998 port->num_add_tx_qps = port->num_tx_qps - port->num_def_qps;
999
1000 ret = 0;
1001 out_free:
1002 if (ret || netif_msg_probe(port))
1003 ehea_dump(cb0, sizeof(*cb0), "ehea_sense_port_attr");
1004 kfree(cb0);
1005 out:
1006 return ret;
1007 }
1008
1009 int ehea_set_portspeed(struct ehea_port *port, u32 port_speed)
1010 {
1011 struct hcp_ehea_port_cb4 *cb4;
1012 u64 hret;
1013 int ret = 0;
1014
1015 cb4 = kzalloc(PAGE_SIZE, GFP_KERNEL);
1016 if (!cb4) {
1017 ehea_error("no mem for cb4");
1018 ret = -ENOMEM;
1019 goto out;
1020 }
1021
1022 cb4->port_speed = port_speed;
1023
1024 netif_carrier_off(port->netdev);
1025
1026 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1027 port->logical_port_id,
1028 H_PORT_CB4, H_PORT_CB4_SPEED, cb4);
1029 if (hret == H_SUCCESS) {
1030 port->autoneg = port_speed == EHEA_SPEED_AUTONEG ? 1 : 0;
1031
1032 hret = ehea_h_query_ehea_port(port->adapter->handle,
1033 port->logical_port_id,
1034 H_PORT_CB4, H_PORT_CB4_SPEED,
1035 cb4);
1036 if (hret == H_SUCCESS) {
1037 switch (cb4->port_speed) {
1038 case H_SPEED_10M_H:
1039 port->port_speed = EHEA_SPEED_10M;
1040 port->full_duplex = 0;
1041 break;
1042 case H_SPEED_10M_F:
1043 port->port_speed = EHEA_SPEED_10M;
1044 port->full_duplex = 1;
1045 break;
1046 case H_SPEED_100M_H:
1047 port->port_speed = EHEA_SPEED_100M;
1048 port->full_duplex = 0;
1049 break;
1050 case H_SPEED_100M_F:
1051 port->port_speed = EHEA_SPEED_100M;
1052 port->full_duplex = 1;
1053 break;
1054 case H_SPEED_1G_F:
1055 port->port_speed = EHEA_SPEED_1G;
1056 port->full_duplex = 1;
1057 break;
1058 case H_SPEED_10G_F:
1059 port->port_speed = EHEA_SPEED_10G;
1060 port->full_duplex = 1;
1061 break;
1062 default:
1063 port->port_speed = 0;
1064 port->full_duplex = 0;
1065 break;
1066 }
1067 } else {
1068 ehea_error("Failed sensing port speed");
1069 ret = -EIO;
1070 }
1071 } else {
1072 if (hret == H_AUTHORITY) {
1073 ehea_info("Hypervisor denied setting port speed");
1074 ret = -EPERM;
1075 } else {
1076 ret = -EIO;
1077 ehea_error("Failed setting port speed");
1078 }
1079 }
1080 if (!prop_carrier_state || (port->phy_link == EHEA_PHY_LINK_UP))
1081 netif_carrier_on(port->netdev);
1082
1083 kfree(cb4);
1084 out:
1085 return ret;
1086 }
1087
1088 static void ehea_parse_eqe(struct ehea_adapter *adapter, u64 eqe)
1089 {
1090 int ret;
1091 u8 ec;
1092 u8 portnum;
1093 struct ehea_port *port;
1094
1095 ec = EHEA_BMASK_GET(NEQE_EVENT_CODE, eqe);
1096 portnum = EHEA_BMASK_GET(NEQE_PORTNUM, eqe);
1097 port = ehea_get_port(adapter, portnum);
1098
1099 switch (ec) {
1100 case EHEA_EC_PORTSTATE_CHG: /* port state change */
1101
1102 if (!port) {
1103 ehea_error("unknown portnum %x", portnum);
1104 break;
1105 }
1106
1107 if (EHEA_BMASK_GET(NEQE_PORT_UP, eqe)) {
1108 if (!netif_carrier_ok(port->netdev)) {
1109 ret = ehea_sense_port_attr(port);
1110 if (ret) {
1111 ehea_error("failed resensing port "
1112 "attributes");
1113 break;
1114 }
1115
1116 if (netif_msg_link(port))
1117 ehea_info("%s: Logical port up: %dMbps "
1118 "%s Duplex",
1119 port->netdev->name,
1120 port->port_speed,
1121 port->full_duplex ==
1122 1 ? "Full" : "Half");
1123
1124 netif_carrier_on(port->netdev);
1125 netif_wake_queue(port->netdev);
1126 }
1127 } else
1128 if (netif_carrier_ok(port->netdev)) {
1129 if (netif_msg_link(port))
1130 ehea_info("%s: Logical port down",
1131 port->netdev->name);
1132 netif_carrier_off(port->netdev);
1133 netif_stop_queue(port->netdev);
1134 }
1135
1136 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PORT_UP, eqe)) {
1137 port->phy_link = EHEA_PHY_LINK_UP;
1138 if (netif_msg_link(port))
1139 ehea_info("%s: Physical port up",
1140 port->netdev->name);
1141 if (prop_carrier_state)
1142 netif_carrier_on(port->netdev);
1143 } else {
1144 port->phy_link = EHEA_PHY_LINK_DOWN;
1145 if (netif_msg_link(port))
1146 ehea_info("%s: Physical port down",
1147 port->netdev->name);
1148 if (prop_carrier_state)
1149 netif_carrier_off(port->netdev);
1150 }
1151
1152 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PRIMARY, eqe))
1153 ehea_info("External switch port is primary port");
1154 else
1155 ehea_info("External switch port is backup port");
1156
1157 break;
1158 case EHEA_EC_ADAPTER_MALFUNC:
1159 ehea_error("Adapter malfunction");
1160 break;
1161 case EHEA_EC_PORT_MALFUNC:
1162 ehea_info("Port malfunction: Device: %s", port->netdev->name);
1163 netif_carrier_off(port->netdev);
1164 netif_stop_queue(port->netdev);
1165 break;
1166 default:
1167 ehea_error("unknown event code %x, eqe=0x%llX", ec, eqe);
1168 break;
1169 }
1170 }
1171
1172 static void ehea_neq_tasklet(unsigned long data)
1173 {
1174 struct ehea_adapter *adapter = (struct ehea_adapter *)data;
1175 struct ehea_eqe *eqe;
1176 u64 event_mask;
1177
1178 eqe = ehea_poll_eq(adapter->neq);
1179 ehea_debug("eqe=%p", eqe);
1180
1181 while (eqe) {
1182 ehea_debug("*eqe=%lx", eqe->entry);
1183 ehea_parse_eqe(adapter, eqe->entry);
1184 eqe = ehea_poll_eq(adapter->neq);
1185 ehea_debug("next eqe=%p", eqe);
1186 }
1187
1188 event_mask = EHEA_BMASK_SET(NELR_PORTSTATE_CHG, 1)
1189 | EHEA_BMASK_SET(NELR_ADAPTER_MALFUNC, 1)
1190 | EHEA_BMASK_SET(NELR_PORT_MALFUNC, 1);
1191
1192 ehea_h_reset_events(adapter->handle,
1193 adapter->neq->fw_handle, event_mask);
1194 }
1195
1196 static irqreturn_t ehea_interrupt_neq(int irq, void *param)
1197 {
1198 struct ehea_adapter *adapter = param;
1199 tasklet_hi_schedule(&adapter->neq_tasklet);
1200 return IRQ_HANDLED;
1201 }
1202
1203
1204 static int ehea_fill_port_res(struct ehea_port_res *pr)
1205 {
1206 int ret;
1207 struct ehea_qp_init_attr *init_attr = &pr->qp->init_attr;
1208
1209 ret = ehea_init_fill_rq1(pr, init_attr->act_nr_rwqes_rq1
1210 - init_attr->act_nr_rwqes_rq2
1211 - init_attr->act_nr_rwqes_rq3 - 1);
1212
1213 ret |= ehea_refill_rq2(pr, init_attr->act_nr_rwqes_rq2 - 1);
1214
1215 ret |= ehea_refill_rq3(pr, init_attr->act_nr_rwqes_rq3 - 1);
1216
1217 return ret;
1218 }
1219
1220 static int ehea_reg_interrupts(struct net_device *dev)
1221 {
1222 struct ehea_port *port = netdev_priv(dev);
1223 struct ehea_port_res *pr;
1224 int i, ret;
1225
1226
1227 snprintf(port->int_aff_name, EHEA_IRQ_NAME_SIZE - 1, "%s-aff",
1228 dev->name);
1229
1230 ret = ibmebus_request_irq(port->qp_eq->attr.ist1,
1231 ehea_qp_aff_irq_handler,
1232 IRQF_DISABLED, port->int_aff_name, port);
1233 if (ret) {
1234 ehea_error("failed registering irq for qp_aff_irq_handler:"
1235 "ist=%X", port->qp_eq->attr.ist1);
1236 goto out_free_qpeq;
1237 }
1238
1239 if (netif_msg_ifup(port))
1240 ehea_info("irq_handle 0x%X for function qp_aff_irq_handler "
1241 "registered", port->qp_eq->attr.ist1);
1242
1243
1244 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
1245 pr = &port->port_res[i];
1246 snprintf(pr->int_send_name, EHEA_IRQ_NAME_SIZE - 1,
1247 "%s-queue%d", dev->name, i);
1248 ret = ibmebus_request_irq(pr->eq->attr.ist1,
1249 ehea_recv_irq_handler,
1250 IRQF_DISABLED, pr->int_send_name,
1251 pr);
1252 if (ret) {
1253 ehea_error("failed registering irq for ehea_queue "
1254 "port_res_nr:%d, ist=%X", i,
1255 pr->eq->attr.ist1);
1256 goto out_free_req;
1257 }
1258 if (netif_msg_ifup(port))
1259 ehea_info("irq_handle 0x%X for function ehea_queue_int "
1260 "%d registered", pr->eq->attr.ist1, i);
1261 }
1262 out:
1263 return ret;
1264
1265
1266 out_free_req:
1267 while (--i >= 0) {
1268 u32 ist = port->port_res[i].eq->attr.ist1;
1269 ibmebus_free_irq(ist, &port->port_res[i]);
1270 }
1271
1272 out_free_qpeq:
1273 ibmebus_free_irq(port->qp_eq->attr.ist1, port);
1274 i = port->num_def_qps;
1275
1276 goto out;
1277
1278 }
1279
1280 static void ehea_free_interrupts(struct net_device *dev)
1281 {
1282 struct ehea_port *port = netdev_priv(dev);
1283 struct ehea_port_res *pr;
1284 int i;
1285
1286 /* send */
1287
1288 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
1289 pr = &port->port_res[i];
1290 ibmebus_free_irq(pr->eq->attr.ist1, pr);
1291 if (netif_msg_intr(port))
1292 ehea_info("free send irq for res %d with handle 0x%X",
1293 i, pr->eq->attr.ist1);
1294 }
1295
1296 /* associated events */
1297 ibmebus_free_irq(port->qp_eq->attr.ist1, port);
1298 if (netif_msg_intr(port))
1299 ehea_info("associated event interrupt for handle 0x%X freed",
1300 port->qp_eq->attr.ist1);
1301 }
1302
1303 static int ehea_configure_port(struct ehea_port *port)
1304 {
1305 int ret, i;
1306 u64 hret, mask;
1307 struct hcp_ehea_port_cb0 *cb0;
1308
1309 ret = -ENOMEM;
1310 cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL);
1311 if (!cb0)
1312 goto out;
1313
1314 cb0->port_rc = EHEA_BMASK_SET(PXLY_RC_VALID, 1)
1315 | EHEA_BMASK_SET(PXLY_RC_IP_CHKSUM, 1)
1316 | EHEA_BMASK_SET(PXLY_RC_TCP_UDP_CHKSUM, 1)
1317 | EHEA_BMASK_SET(PXLY_RC_VLAN_XTRACT, 1)
1318 | EHEA_BMASK_SET(PXLY_RC_VLAN_TAG_FILTER,
1319 PXLY_RC_VLAN_FILTER)
1320 | EHEA_BMASK_SET(PXLY_RC_JUMBO_FRAME, 1);
1321
1322 for (i = 0; i < port->num_mcs; i++)
1323 if (use_mcs)
1324 cb0->default_qpn_arr[i] =
1325 port->port_res[i].qp->init_attr.qp_nr;
1326 else
1327 cb0->default_qpn_arr[i] =
1328 port->port_res[0].qp->init_attr.qp_nr;
1329
1330 if (netif_msg_ifup(port))
1331 ehea_dump(cb0, sizeof(*cb0), "ehea_configure_port");
1332
1333 mask = EHEA_BMASK_SET(H_PORT_CB0_PRC, 1)
1334 | EHEA_BMASK_SET(H_PORT_CB0_DEFQPNARRAY, 1);
1335
1336 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1337 port->logical_port_id,
1338 H_PORT_CB0, mask, cb0);
1339 ret = -EIO;
1340 if (hret != H_SUCCESS)
1341 goto out_free;
1342
1343 ret = 0;
1344
1345 out_free:
1346 kfree(cb0);
1347 out:
1348 return ret;
1349 }
1350
1351 int ehea_gen_smrs(struct ehea_port_res *pr)
1352 {
1353 int ret;
1354 struct ehea_adapter *adapter = pr->port->adapter;
1355
1356 ret = ehea_gen_smr(adapter, &adapter->mr, &pr->send_mr);
1357 if (ret)
1358 goto out;
1359
1360 ret = ehea_gen_smr(adapter, &adapter->mr, &pr->recv_mr);
1361 if (ret)
1362 goto out_free;
1363
1364 return 0;
1365
1366 out_free:
1367 ehea_rem_mr(&pr->send_mr);
1368 out:
1369 ehea_error("Generating SMRS failed\n");
1370 return -EIO;
1371 }
1372
1373 int ehea_rem_smrs(struct ehea_port_res *pr)
1374 {
1375 if ((ehea_rem_mr(&pr->send_mr))
1376 || (ehea_rem_mr(&pr->recv_mr)))
1377 return -EIO;
1378 else
1379 return 0;
1380 }
1381
1382 static int ehea_init_q_skba(struct ehea_q_skb_arr *q_skba, int max_q_entries)
1383 {
1384 int arr_size = sizeof(void *) * max_q_entries;
1385
1386 q_skba->arr = vmalloc(arr_size);
1387 if (!q_skba->arr)
1388 return -ENOMEM;
1389
1390 memset(q_skba->arr, 0, arr_size);
1391
1392 q_skba->len = max_q_entries;
1393 q_skba->index = 0;
1394 q_skba->os_skbs = 0;
1395
1396 return 0;
1397 }
1398
1399 static int ehea_init_port_res(struct ehea_port *port, struct ehea_port_res *pr,
1400 struct port_res_cfg *pr_cfg, int queue_token)
1401 {
1402 struct ehea_adapter *adapter = port->adapter;
1403 enum ehea_eq_type eq_type = EHEA_EQ;
1404 struct ehea_qp_init_attr *init_attr = NULL;
1405 int ret = -EIO;
1406
1407 memset(pr, 0, sizeof(struct ehea_port_res));
1408
1409 pr->port = port;
1410 spin_lock_init(&pr->xmit_lock);
1411 spin_lock_init(&pr->netif_queue);
1412
1413 pr->eq = ehea_create_eq(adapter, eq_type, EHEA_MAX_ENTRIES_EQ, 0);
1414 if (!pr->eq) {
1415 ehea_error("create_eq failed (eq)");
1416 goto out_free;
1417 }
1418
1419 pr->recv_cq = ehea_create_cq(adapter, pr_cfg->max_entries_rcq,
1420 pr->eq->fw_handle,
1421 port->logical_port_id);
1422 if (!pr->recv_cq) {
1423 ehea_error("create_cq failed (cq_recv)");
1424 goto out_free;
1425 }
1426
1427 pr->send_cq = ehea_create_cq(adapter, pr_cfg->max_entries_scq,
1428 pr->eq->fw_handle,
1429 port->logical_port_id);
1430 if (!pr->send_cq) {
1431 ehea_error("create_cq failed (cq_send)");
1432 goto out_free;
1433 }
1434
1435 if (netif_msg_ifup(port))
1436 ehea_info("Send CQ: act_nr_cqes=%d, Recv CQ: act_nr_cqes=%d",
1437 pr->send_cq->attr.act_nr_of_cqes,
1438 pr->recv_cq->attr.act_nr_of_cqes);
1439
1440 init_attr = kzalloc(sizeof(*init_attr), GFP_KERNEL);
1441 if (!init_attr) {
1442 ret = -ENOMEM;
1443 ehea_error("no mem for ehea_qp_init_attr");
1444 goto out_free;
1445 }
1446
1447 init_attr->low_lat_rq1 = 1;
1448 init_attr->signalingtype = 1; /* generate CQE if specified in WQE */
1449 init_attr->rq_count = 3;
1450 init_attr->qp_token = queue_token;
1451 init_attr->max_nr_send_wqes = pr_cfg->max_entries_sq;
1452 init_attr->max_nr_rwqes_rq1 = pr_cfg->max_entries_rq1;
1453 init_attr->max_nr_rwqes_rq2 = pr_cfg->max_entries_rq2;
1454 init_attr->max_nr_rwqes_rq3 = pr_cfg->max_entries_rq3;
1455 init_attr->wqe_size_enc_sq = EHEA_SG_SQ;
1456 init_attr->wqe_size_enc_rq1 = EHEA_SG_RQ1;
1457 init_attr->wqe_size_enc_rq2 = EHEA_SG_RQ2;
1458 init_attr->wqe_size_enc_rq3 = EHEA_SG_RQ3;
1459 init_attr->rq2_threshold = EHEA_RQ2_THRESHOLD;
1460 init_attr->rq3_threshold = EHEA_RQ3_THRESHOLD;
1461 init_attr->port_nr = port->logical_port_id;
1462 init_attr->send_cq_handle = pr->send_cq->fw_handle;
1463 init_attr->recv_cq_handle = pr->recv_cq->fw_handle;
1464 init_attr->aff_eq_handle = port->qp_eq->fw_handle;
1465
1466 pr->qp = ehea_create_qp(adapter, adapter->pd, init_attr);
1467 if (!pr->qp) {
1468 ehea_error("create_qp failed");
1469 ret = -EIO;
1470 goto out_free;
1471 }
1472
1473 if (netif_msg_ifup(port))
1474 ehea_info("QP: qp_nr=%d\n act_nr_snd_wqe=%d\n nr_rwqe_rq1=%d\n "
1475 "nr_rwqe_rq2=%d\n nr_rwqe_rq3=%d", init_attr->qp_nr,
1476 init_attr->act_nr_send_wqes,
1477 init_attr->act_nr_rwqes_rq1,
1478 init_attr->act_nr_rwqes_rq2,
1479 init_attr->act_nr_rwqes_rq3);
1480
1481 pr->sq_skba_size = init_attr->act_nr_send_wqes + 1;
1482
1483 ret = ehea_init_q_skba(&pr->sq_skba, pr->sq_skba_size);
1484 ret |= ehea_init_q_skba(&pr->rq1_skba, init_attr->act_nr_rwqes_rq1 + 1);
1485 ret |= ehea_init_q_skba(&pr->rq2_skba, init_attr->act_nr_rwqes_rq2 + 1);
1486 ret |= ehea_init_q_skba(&pr->rq3_skba, init_attr->act_nr_rwqes_rq3 + 1);
1487 if (ret)
1488 goto out_free;
1489
1490 pr->swqe_refill_th = init_attr->act_nr_send_wqes / 10;
1491 if (ehea_gen_smrs(pr) != 0) {
1492 ret = -EIO;
1493 goto out_free;
1494 }
1495
1496 atomic_set(&pr->swqe_avail, init_attr->act_nr_send_wqes - 1);
1497
1498 kfree(init_attr);
1499
1500 netif_napi_add(pr->port->netdev, &pr->napi, ehea_poll, 64);
1501
1502 pr->lro_mgr.max_aggr = pr->port->lro_max_aggr;
1503 pr->lro_mgr.max_desc = MAX_LRO_DESCRIPTORS;
1504 pr->lro_mgr.lro_arr = pr->lro_desc;
1505 pr->lro_mgr.get_skb_header = get_skb_hdr;
1506 pr->lro_mgr.features = LRO_F_NAPI | LRO_F_EXTRACT_VLAN_ID;
1507 pr->lro_mgr.dev = port->netdev;
1508 pr->lro_mgr.ip_summed = CHECKSUM_UNNECESSARY;
1509 pr->lro_mgr.ip_summed_aggr = CHECKSUM_UNNECESSARY;
1510
1511 ret = 0;
1512 goto out;
1513
1514 out_free:
1515 kfree(init_attr);
1516 vfree(pr->sq_skba.arr);
1517 vfree(pr->rq1_skba.arr);
1518 vfree(pr->rq2_skba.arr);
1519 vfree(pr->rq3_skba.arr);
1520 ehea_destroy_qp(pr->qp);
1521 ehea_destroy_cq(pr->send_cq);
1522 ehea_destroy_cq(pr->recv_cq);
1523 ehea_destroy_eq(pr->eq);
1524 out:
1525 return ret;
1526 }
1527
1528 static int ehea_clean_portres(struct ehea_port *port, struct ehea_port_res *pr)
1529 {
1530 int ret, i;
1531
1532 ret = ehea_destroy_qp(pr->qp);
1533
1534 if (!ret) {
1535 ehea_destroy_cq(pr->send_cq);
1536 ehea_destroy_cq(pr->recv_cq);
1537 ehea_destroy_eq(pr->eq);
1538
1539 for (i = 0; i < pr->rq1_skba.len; i++)
1540 if (pr->rq1_skba.arr[i])
1541 dev_kfree_skb(pr->rq1_skba.arr[i]);
1542
1543 for (i = 0; i < pr->rq2_skba.len; i++)
1544 if (pr->rq2_skba.arr[i])
1545 dev_kfree_skb(pr->rq2_skba.arr[i]);
1546
1547 for (i = 0; i < pr->rq3_skba.len; i++)
1548 if (pr->rq3_skba.arr[i])
1549 dev_kfree_skb(pr->rq3_skba.arr[i]);
1550
1551 for (i = 0; i < pr->sq_skba.len; i++)
1552 if (pr->sq_skba.arr[i])
1553 dev_kfree_skb(pr->sq_skba.arr[i]);
1554
1555 vfree(pr->rq1_skba.arr);
1556 vfree(pr->rq2_skba.arr);
1557 vfree(pr->rq3_skba.arr);
1558 vfree(pr->sq_skba.arr);
1559 ret = ehea_rem_smrs(pr);
1560 }
1561 return ret;
1562 }
1563
1564 /*
1565 * The write_* functions store information in swqe which is used by
1566 * the hardware to calculate the ip/tcp/udp checksum
1567 */
1568
1569 static inline void write_ip_start_end(struct ehea_swqe *swqe,
1570 const struct sk_buff *skb)
1571 {
1572 swqe->ip_start = skb_network_offset(skb);
1573 swqe->ip_end = (u8)(swqe->ip_start + ip_hdrlen(skb) - 1);
1574 }
1575
1576 static inline void write_tcp_offset_end(struct ehea_swqe *swqe,
1577 const struct sk_buff *skb)
1578 {
1579 swqe->tcp_offset =
1580 (u8)(swqe->ip_end + 1 + offsetof(struct tcphdr, check));
1581
1582 swqe->tcp_end = (u16)skb->len - 1;
1583 }
1584
1585 static inline void write_udp_offset_end(struct ehea_swqe *swqe,
1586 const struct sk_buff *skb)
1587 {
1588 swqe->tcp_offset =
1589 (u8)(swqe->ip_end + 1 + offsetof(struct udphdr, check));
1590
1591 swqe->tcp_end = (u16)skb->len - 1;
1592 }
1593
1594
1595 static void write_swqe2_TSO(struct sk_buff *skb,
1596 struct ehea_swqe *swqe, u32 lkey)
1597 {
1598 struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry;
1599 u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0];
1600 int skb_data_size = skb->len - skb->data_len;
1601 int headersize;
1602
1603 /* Packet is TCP with TSO enabled */
1604 swqe->tx_control |= EHEA_SWQE_TSO;
1605 swqe->mss = skb_shinfo(skb)->gso_size;
1606 /* copy only eth/ip/tcp headers to immediate data and
1607 * the rest of skb->data to sg1entry
1608 */
1609 headersize = ETH_HLEN + ip_hdrlen(skb) + tcp_hdrlen(skb);
1610
1611 skb_data_size = skb->len - skb->data_len;
1612
1613 if (skb_data_size >= headersize) {
1614 /* copy immediate data */
1615 skb_copy_from_linear_data(skb, imm_data, headersize);
1616 swqe->immediate_data_length = headersize;
1617
1618 if (skb_data_size > headersize) {
1619 /* set sg1entry data */
1620 sg1entry->l_key = lkey;
1621 sg1entry->len = skb_data_size - headersize;
1622 sg1entry->vaddr =
1623 ehea_map_vaddr(skb->data + headersize);
1624 swqe->descriptors++;
1625 }
1626 } else
1627 ehea_error("cannot handle fragmented headers");
1628 }
1629
1630 static void write_swqe2_nonTSO(struct sk_buff *skb,
1631 struct ehea_swqe *swqe, u32 lkey)
1632 {
1633 int skb_data_size = skb->len - skb->data_len;
1634 u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0];
1635 struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry;
1636
1637 /* Packet is any nonTSO type
1638 *
1639 * Copy as much as possible skb->data to immediate data and
1640 * the rest to sg1entry
1641 */
1642 if (skb_data_size >= SWQE2_MAX_IMM) {
1643 /* copy immediate data */
1644 skb_copy_from_linear_data(skb, imm_data, SWQE2_MAX_IMM);
1645
1646 swqe->immediate_data_length = SWQE2_MAX_IMM;
1647
1648 if (skb_data_size > SWQE2_MAX_IMM) {
1649 /* copy sg1entry data */
1650 sg1entry->l_key = lkey;
1651 sg1entry->len = skb_data_size - SWQE2_MAX_IMM;
1652 sg1entry->vaddr =
1653 ehea_map_vaddr(skb->data + SWQE2_MAX_IMM);
1654 swqe->descriptors++;
1655 }
1656 } else {
1657 skb_copy_from_linear_data(skb, imm_data, skb_data_size);
1658 swqe->immediate_data_length = skb_data_size;
1659 }
1660 }
1661
1662 static inline void write_swqe2_data(struct sk_buff *skb, struct net_device *dev,
1663 struct ehea_swqe *swqe, u32 lkey)
1664 {
1665 struct ehea_vsgentry *sg_list, *sg1entry, *sgentry;
1666 skb_frag_t *frag;
1667 int nfrags, sg1entry_contains_frag_data, i;
1668
1669 nfrags = skb_shinfo(skb)->nr_frags;
1670 sg1entry = &swqe->u.immdata_desc.sg_entry;
1671 sg_list = (struct ehea_vsgentry *)&swqe->u.immdata_desc.sg_list;
1672 swqe->descriptors = 0;
1673 sg1entry_contains_frag_data = 0;
1674
1675 if ((dev->features & NETIF_F_TSO) && skb_shinfo(skb)->gso_size)
1676 write_swqe2_TSO(skb, swqe, lkey);
1677 else
1678 write_swqe2_nonTSO(skb, swqe, lkey);
1679
1680 /* write descriptors */
1681 if (nfrags > 0) {
1682 if (swqe->descriptors == 0) {
1683 /* sg1entry not yet used */
1684 frag = &skb_shinfo(skb)->frags[0];
1685
1686 /* copy sg1entry data */
1687 sg1entry->l_key = lkey;
1688 sg1entry->len = frag->size;
1689 sg1entry->vaddr =
1690 ehea_map_vaddr(page_address(frag->page)
1691 + frag->page_offset);
1692 swqe->descriptors++;
1693 sg1entry_contains_frag_data = 1;
1694 }
1695
1696 for (i = sg1entry_contains_frag_data; i < nfrags; i++) {
1697
1698 frag = &skb_shinfo(skb)->frags[i];
1699 sgentry = &sg_list[i - sg1entry_contains_frag_data];
1700
1701 sgentry->l_key = lkey;
1702 sgentry->len = frag->size;
1703 sgentry->vaddr =
1704 ehea_map_vaddr(page_address(frag->page)
1705 + frag->page_offset);
1706 swqe->descriptors++;
1707 }
1708 }
1709 }
1710
1711 static int ehea_broadcast_reg_helper(struct ehea_port *port, u32 hcallid)
1712 {
1713 int ret = 0;
1714 u64 hret;
1715 u8 reg_type;
1716
1717 /* De/Register untagged packets */
1718 reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_UNTAGGED;
1719 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1720 port->logical_port_id,
1721 reg_type, port->mac_addr, 0, hcallid);
1722 if (hret != H_SUCCESS) {
1723 ehea_error("%sregistering bc address failed (tagged)",
1724 hcallid == H_REG_BCMC ? "" : "de");
1725 ret = -EIO;
1726 goto out_herr;
1727 }
1728
1729 /* De/Register VLAN packets */
1730 reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_VLANID_ALL;
1731 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1732 port->logical_port_id,
1733 reg_type, port->mac_addr, 0, hcallid);
1734 if (hret != H_SUCCESS) {
1735 ehea_error("%sregistering bc address failed (vlan)",
1736 hcallid == H_REG_BCMC ? "" : "de");
1737 ret = -EIO;
1738 }
1739 out_herr:
1740 return ret;
1741 }
1742
1743 static int ehea_set_mac_addr(struct net_device *dev, void *sa)
1744 {
1745 struct ehea_port *port = netdev_priv(dev);
1746 struct sockaddr *mac_addr = sa;
1747 struct hcp_ehea_port_cb0 *cb0;
1748 int ret;
1749 u64 hret;
1750
1751 if (!is_valid_ether_addr(mac_addr->sa_data)) {
1752 ret = -EADDRNOTAVAIL;
1753 goto out;
1754 }
1755
1756 cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL);
1757 if (!cb0) {
1758 ehea_error("no mem for cb0");
1759 ret = -ENOMEM;
1760 goto out;
1761 }
1762
1763 memcpy(&(cb0->port_mac_addr), &(mac_addr->sa_data[0]), ETH_ALEN);
1764
1765 cb0->port_mac_addr = cb0->port_mac_addr >> 16;
1766
1767 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1768 port->logical_port_id, H_PORT_CB0,
1769 EHEA_BMASK_SET(H_PORT_CB0_MAC, 1), cb0);
1770 if (hret != H_SUCCESS) {
1771 ret = -EIO;
1772 goto out_free;
1773 }
1774
1775 memcpy(dev->dev_addr, mac_addr->sa_data, dev->addr_len);
1776
1777 spin_lock(&ehea_bcmc_regs.lock);
1778
1779 /* Deregister old MAC in pHYP */
1780 if (port->state == EHEA_PORT_UP) {
1781 ret = ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
1782 if (ret)
1783 goto out_upregs;
1784 }
1785
1786 port->mac_addr = cb0->port_mac_addr << 16;
1787
1788 /* Register new MAC in pHYP */
1789 if (port->state == EHEA_PORT_UP) {
1790 ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
1791 if (ret)
1792 goto out_upregs;
1793 }
1794
1795 ret = 0;
1796
1797 out_upregs:
1798 ehea_update_bcmc_registrations();
1799 spin_unlock(&ehea_bcmc_regs.lock);
1800 out_free:
1801 kfree(cb0);
1802 out:
1803 return ret;
1804 }
1805
1806 static void ehea_promiscuous_error(u64 hret, int enable)
1807 {
1808 if (hret == H_AUTHORITY)
1809 ehea_info("Hypervisor denied %sabling promiscuous mode",
1810 enable == 1 ? "en" : "dis");
1811 else
1812 ehea_error("failed %sabling promiscuous mode",
1813 enable == 1 ? "en" : "dis");
1814 }
1815
1816 static void ehea_promiscuous(struct net_device *dev, int enable)
1817 {
1818 struct ehea_port *port = netdev_priv(dev);
1819 struct hcp_ehea_port_cb7 *cb7;
1820 u64 hret;
1821
1822 if ((enable && port->promisc) || (!enable && !port->promisc))
1823 return;
1824
1825 cb7 = kzalloc(PAGE_SIZE, GFP_ATOMIC);
1826 if (!cb7) {
1827 ehea_error("no mem for cb7");
1828 goto out;
1829 }
1830
1831 /* Modify Pxs_DUCQPN in CB7 */
1832 cb7->def_uc_qpn = enable == 1 ? port->port_res[0].qp->fw_handle : 0;
1833
1834 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1835 port->logical_port_id,
1836 H_PORT_CB7, H_PORT_CB7_DUCQPN, cb7);
1837 if (hret) {
1838 ehea_promiscuous_error(hret, enable);
1839 goto out;
1840 }
1841
1842 port->promisc = enable;
1843 out:
1844 kfree(cb7);
1845 return;
1846 }
1847
1848 static u64 ehea_multicast_reg_helper(struct ehea_port *port, u64 mc_mac_addr,
1849 u32 hcallid)
1850 {
1851 u64 hret;
1852 u8 reg_type;
1853
1854 reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST
1855 | EHEA_BCMC_UNTAGGED;
1856
1857 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1858 port->logical_port_id,
1859 reg_type, mc_mac_addr, 0, hcallid);
1860 if (hret)
1861 goto out;
1862
1863 reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST
1864 | EHEA_BCMC_VLANID_ALL;
1865
1866 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1867 port->logical_port_id,
1868 reg_type, mc_mac_addr, 0, hcallid);
1869 out:
1870 return hret;
1871 }
1872
1873 static int ehea_drop_multicast_list(struct net_device *dev)
1874 {
1875 struct ehea_port *port = netdev_priv(dev);
1876 struct ehea_mc_list *mc_entry = port->mc_list;
1877 struct list_head *pos;
1878 struct list_head *temp;
1879 int ret = 0;
1880 u64 hret;
1881
1882 list_for_each_safe(pos, temp, &(port->mc_list->list)) {
1883 mc_entry = list_entry(pos, struct ehea_mc_list, list);
1884
1885 hret = ehea_multicast_reg_helper(port, mc_entry->macaddr,
1886 H_DEREG_BCMC);
1887 if (hret) {
1888 ehea_error("failed deregistering mcast MAC");
1889 ret = -EIO;
1890 }
1891
1892 list_del(pos);
1893 kfree(mc_entry);
1894 }
1895 return ret;
1896 }
1897
1898 static void ehea_allmulti(struct net_device *dev, int enable)
1899 {
1900 struct ehea_port *port = netdev_priv(dev);
1901 u64 hret;
1902
1903 if (!port->allmulti) {
1904 if (enable) {
1905 /* Enable ALLMULTI */
1906 ehea_drop_multicast_list(dev);
1907 hret = ehea_multicast_reg_helper(port, 0, H_REG_BCMC);
1908 if (!hret)
1909 port->allmulti = 1;
1910 else
1911 ehea_error("failed enabling IFF_ALLMULTI");
1912 }
1913 } else
1914 if (!enable) {
1915 /* Disable ALLMULTI */
1916 hret = ehea_multicast_reg_helper(port, 0, H_DEREG_BCMC);
1917 if (!hret)
1918 port->allmulti = 0;
1919 else
1920 ehea_error("failed disabling IFF_ALLMULTI");
1921 }
1922 }
1923
1924 static void ehea_add_multicast_entry(struct ehea_port *port, u8 *mc_mac_addr)
1925 {
1926 struct ehea_mc_list *ehea_mcl_entry;
1927 u64 hret;
1928
1929 ehea_mcl_entry = kzalloc(sizeof(*ehea_mcl_entry), GFP_ATOMIC);
1930 if (!ehea_mcl_entry) {
1931 ehea_error("no mem for mcl_entry");
1932 return;
1933 }
1934
1935 INIT_LIST_HEAD(&ehea_mcl_entry->list);
1936
1937 memcpy(&ehea_mcl_entry->macaddr, mc_mac_addr, ETH_ALEN);
1938
1939 hret = ehea_multicast_reg_helper(port, ehea_mcl_entry->macaddr,
1940 H_REG_BCMC);
1941 if (!hret)
1942 list_add(&ehea_mcl_entry->list, &port->mc_list->list);
1943 else {
1944 ehea_error("failed registering mcast MAC");
1945 kfree(ehea_mcl_entry);
1946 }
1947 }
1948
1949 static void ehea_set_multicast_list(struct net_device *dev)
1950 {
1951 struct ehea_port *port = netdev_priv(dev);
1952 struct dev_mc_list *k_mcl_entry;
1953 int ret, i;
1954
1955 if (dev->flags & IFF_PROMISC) {
1956 ehea_promiscuous(dev, 1);
1957 return;
1958 }
1959 ehea_promiscuous(dev, 0);
1960
1961 spin_lock(&ehea_bcmc_regs.lock);
1962
1963 if (dev->flags & IFF_ALLMULTI) {
1964 ehea_allmulti(dev, 1);
1965 goto out;
1966 }
1967 ehea_allmulti(dev, 0);
1968
1969 if (dev->mc_count) {
1970 ret = ehea_drop_multicast_list(dev);
1971 if (ret) {
1972 /* Dropping the current multicast list failed.
1973 * Enabling ALL_MULTI is the best we can do.
1974 */
1975 ehea_allmulti(dev, 1);
1976 }
1977
1978 if (dev->mc_count > port->adapter->max_mc_mac) {
1979 ehea_info("Mcast registration limit reached (0x%llx). "
1980 "Use ALLMULTI!",
1981 port->adapter->max_mc_mac);
1982 goto out;
1983 }
1984
1985 for (i = 0, k_mcl_entry = dev->mc_list; i < dev->mc_count; i++,
1986 k_mcl_entry = k_mcl_entry->next)
1987 ehea_add_multicast_entry(port, k_mcl_entry->dmi_addr);
1988
1989 }
1990 out:
1991 ehea_update_bcmc_registrations();
1992 spin_unlock(&ehea_bcmc_regs.lock);
1993 return;
1994 }
1995
1996 static int ehea_change_mtu(struct net_device *dev, int new_mtu)
1997 {
1998 if ((new_mtu < 68) || (new_mtu > EHEA_MAX_PACKET_SIZE))
1999 return -EINVAL;
2000 dev->mtu = new_mtu;
2001 return 0;
2002 }
2003
2004 static void ehea_xmit2(struct sk_buff *skb, struct net_device *dev,
2005 struct ehea_swqe *swqe, u32 lkey)
2006 {
2007 if (skb->protocol == htons(ETH_P_IP)) {
2008 const struct iphdr *iph = ip_hdr(skb);
2009
2010 /* IPv4 */
2011 swqe->tx_control |= EHEA_SWQE_CRC
2012 | EHEA_SWQE_IP_CHECKSUM
2013 | EHEA_SWQE_TCP_CHECKSUM
2014 | EHEA_SWQE_IMM_DATA_PRESENT
2015 | EHEA_SWQE_DESCRIPTORS_PRESENT;
2016
2017 write_ip_start_end(swqe, skb);
2018
2019 if (iph->protocol == IPPROTO_UDP) {
2020 if ((iph->frag_off & IP_MF)
2021 || (iph->frag_off & IP_OFFSET))
2022 /* IP fragment, so don't change cs */
2023 swqe->tx_control &= ~EHEA_SWQE_TCP_CHECKSUM;
2024 else
2025 write_udp_offset_end(swqe, skb);
2026 } else if (iph->protocol == IPPROTO_TCP) {
2027 write_tcp_offset_end(swqe, skb);
2028 }
2029
2030 /* icmp (big data) and ip segmentation packets (all other ip
2031 packets) do not require any special handling */
2032
2033 } else {
2034 /* Other Ethernet Protocol */
2035 swqe->tx_control |= EHEA_SWQE_CRC
2036 | EHEA_SWQE_IMM_DATA_PRESENT
2037 | EHEA_SWQE_DESCRIPTORS_PRESENT;
2038 }
2039
2040 write_swqe2_data(skb, dev, swqe, lkey);
2041 }
2042
2043 static void ehea_xmit3(struct sk_buff *skb, struct net_device *dev,
2044 struct ehea_swqe *swqe)
2045 {
2046 int nfrags = skb_shinfo(skb)->nr_frags;
2047 u8 *imm_data = &swqe->u.immdata_nodesc.immediate_data[0];
2048 skb_frag_t *frag;
2049 int i;
2050
2051 if (skb->protocol == htons(ETH_P_IP)) {
2052 const struct iphdr *iph = ip_hdr(skb);
2053
2054 /* IPv4 */
2055 write_ip_start_end(swqe, skb);
2056
2057 if (iph->protocol == IPPROTO_TCP) {
2058 swqe->tx_control |= EHEA_SWQE_CRC
2059 | EHEA_SWQE_IP_CHECKSUM
2060 | EHEA_SWQE_TCP_CHECKSUM
2061 | EHEA_SWQE_IMM_DATA_PRESENT;
2062
2063 write_tcp_offset_end(swqe, skb);
2064
2065 } else if (iph->protocol == IPPROTO_UDP) {
2066 if ((iph->frag_off & IP_MF)
2067 || (iph->frag_off & IP_OFFSET))
2068 /* IP fragment, so don't change cs */
2069 swqe->tx_control |= EHEA_SWQE_CRC
2070 | EHEA_SWQE_IMM_DATA_PRESENT;
2071 else {
2072 swqe->tx_control |= EHEA_SWQE_CRC
2073 | EHEA_SWQE_IP_CHECKSUM
2074 | EHEA_SWQE_TCP_CHECKSUM
2075 | EHEA_SWQE_IMM_DATA_PRESENT;
2076
2077 write_udp_offset_end(swqe, skb);
2078 }
2079 } else {
2080 /* icmp (big data) and
2081 ip segmentation packets (all other ip packets) */
2082 swqe->tx_control |= EHEA_SWQE_CRC
2083 | EHEA_SWQE_IP_CHECKSUM
2084 | EHEA_SWQE_IMM_DATA_PRESENT;
2085 }
2086 } else {
2087 /* Other Ethernet Protocol */
2088 swqe->tx_control |= EHEA_SWQE_CRC | EHEA_SWQE_IMM_DATA_PRESENT;
2089 }
2090 /* copy (immediate) data */
2091 if (nfrags == 0) {
2092 /* data is in a single piece */
2093 skb_copy_from_linear_data(skb, imm_data, skb->len);
2094 } else {
2095 /* first copy data from the skb->data buffer ... */
2096 skb_copy_from_linear_data(skb, imm_data,
2097 skb->len - skb->data_len);
2098 imm_data += skb->len - skb->data_len;
2099
2100 /* ... then copy data from the fragments */
2101 for (i = 0; i < nfrags; i++) {
2102 frag = &skb_shinfo(skb)->frags[i];
2103 memcpy(imm_data,
2104 page_address(frag->page) + frag->page_offset,
2105 frag->size);
2106 imm_data += frag->size;
2107 }
2108 }
2109 swqe->immediate_data_length = skb->len;
2110 dev_kfree_skb(skb);
2111 }
2112
2113 static inline int ehea_hash_skb(struct sk_buff *skb, int num_qps)
2114 {
2115 struct tcphdr *tcp;
2116 u32 tmp;
2117
2118 if ((skb->protocol == htons(ETH_P_IP)) &&
2119 (ip_hdr(skb)->protocol == IPPROTO_TCP)) {
2120 tcp = (struct tcphdr *)(skb_network_header(skb) +
2121 (ip_hdr(skb)->ihl * 4));
2122 tmp = (tcp->source + (tcp->dest << 16)) % 31;
2123 tmp += ip_hdr(skb)->daddr % 31;
2124 return tmp % num_qps;
2125 } else
2126 return 0;
2127 }
2128
2129 static int ehea_start_xmit(struct sk_buff *skb, struct net_device *dev)
2130 {
2131 struct ehea_port *port = netdev_priv(dev);
2132 struct ehea_swqe *swqe;
2133 unsigned long flags;
2134 u32 lkey;
2135 int swqe_index;
2136 struct ehea_port_res *pr;
2137
2138 pr = &port->port_res[ehea_hash_skb(skb, port->num_tx_qps)];
2139
2140 if (!spin_trylock(&pr->xmit_lock))
2141 return NETDEV_TX_BUSY;
2142
2143 if (pr->queue_stopped) {
2144 spin_unlock(&pr->xmit_lock);
2145 return NETDEV_TX_BUSY;
2146 }
2147
2148 swqe = ehea_get_swqe(pr->qp, &swqe_index);
2149 memset(swqe, 0, SWQE_HEADER_SIZE);
2150 atomic_dec(&pr->swqe_avail);
2151
2152 if (skb->len <= SWQE3_MAX_IMM) {
2153 u32 sig_iv = port->sig_comp_iv;
2154 u32 swqe_num = pr->swqe_id_counter;
2155 ehea_xmit3(skb, dev, swqe);
2156 swqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE3_TYPE)
2157 | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, swqe_num);
2158 if (pr->swqe_ll_count >= (sig_iv - 1)) {
2159 swqe->wr_id |= EHEA_BMASK_SET(EHEA_WR_ID_REFILL,
2160 sig_iv);
2161 swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
2162 pr->swqe_ll_count = 0;
2163 } else
2164 pr->swqe_ll_count += 1;
2165 } else {
2166 swqe->wr_id =
2167 EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE2_TYPE)
2168 | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, pr->swqe_id_counter)
2169 | EHEA_BMASK_SET(EHEA_WR_ID_REFILL, 1)
2170 | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, pr->sq_skba.index);
2171 pr->sq_skba.arr[pr->sq_skba.index] = skb;
2172
2173 pr->sq_skba.index++;
2174 pr->sq_skba.index &= (pr->sq_skba.len - 1);
2175
2176 lkey = pr->send_mr.lkey;
2177 ehea_xmit2(skb, dev, swqe, lkey);
2178 swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
2179 }
2180 pr->swqe_id_counter += 1;
2181
2182 if (port->vgrp && vlan_tx_tag_present(skb)) {
2183 swqe->tx_control |= EHEA_SWQE_VLAN_INSERT;
2184 swqe->vlan_tag = vlan_tx_tag_get(skb);
2185 }
2186
2187 if (netif_msg_tx_queued(port)) {
2188 ehea_info("post swqe on QP %d", pr->qp->init_attr.qp_nr);
2189 ehea_dump(swqe, 512, "swqe");
2190 }
2191
2192 if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) {
2193 netif_stop_queue(dev);
2194 swqe->tx_control |= EHEA_SWQE_PURGE;
2195 }
2196
2197 ehea_post_swqe(pr->qp, swqe);
2198 pr->tx_packets++;
2199
2200 if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) {
2201 spin_lock_irqsave(&pr->netif_queue, flags);
2202 if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) {
2203 pr->p_stats.queue_stopped++;
2204 netif_stop_queue(dev);
2205 pr->queue_stopped = 1;
2206 }
2207 spin_unlock_irqrestore(&pr->netif_queue, flags);
2208 }
2209 dev->trans_start = jiffies;
2210 spin_unlock(&pr->xmit_lock);
2211
2212 return NETDEV_TX_OK;
2213 }
2214
2215 static void ehea_vlan_rx_register(struct net_device *dev,
2216 struct vlan_group *grp)
2217 {
2218 struct ehea_port *port = netdev_priv(dev);
2219 struct ehea_adapter *adapter = port->adapter;
2220 struct hcp_ehea_port_cb1 *cb1;
2221 u64 hret;
2222
2223 port->vgrp = grp;
2224
2225 cb1 = kzalloc(PAGE_SIZE, GFP_KERNEL);
2226 if (!cb1) {
2227 ehea_error("no mem for cb1");
2228 goto out;
2229 }
2230
2231 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
2232 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2233 if (hret != H_SUCCESS)
2234 ehea_error("modify_ehea_port failed");
2235
2236 kfree(cb1);
2237 out:
2238 return;
2239 }
2240
2241 static void ehea_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
2242 {
2243 struct ehea_port *port = netdev_priv(dev);
2244 struct ehea_adapter *adapter = port->adapter;
2245 struct hcp_ehea_port_cb1 *cb1;
2246 int index;
2247 u64 hret;
2248
2249 cb1 = kzalloc(PAGE_SIZE, GFP_KERNEL);
2250 if (!cb1) {
2251 ehea_error("no mem for cb1");
2252 goto out;
2253 }
2254
2255 hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
2256 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2257 if (hret != H_SUCCESS) {
2258 ehea_error("query_ehea_port failed");
2259 goto out;
2260 }
2261
2262 index = (vid / 64);
2263 cb1->vlan_filter[index] |= ((u64)(0x8000000000000000 >> (vid & 0x3F)));
2264
2265 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
2266 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2267 if (hret != H_SUCCESS)
2268 ehea_error("modify_ehea_port failed");
2269 out:
2270 kfree(cb1);
2271 return;
2272 }
2273
2274 static void ehea_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
2275 {
2276 struct ehea_port *port = netdev_priv(dev);
2277 struct ehea_adapter *adapter = port->adapter;
2278 struct hcp_ehea_port_cb1 *cb1;
2279 int index;
2280 u64 hret;
2281
2282 vlan_group_set_device(port->vgrp, vid, NULL);
2283
2284 cb1 = kzalloc(PAGE_SIZE, GFP_KERNEL);
2285 if (!cb1) {
2286 ehea_error("no mem for cb1");
2287 goto out;
2288 }
2289
2290 hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
2291 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2292 if (hret != H_SUCCESS) {
2293 ehea_error("query_ehea_port failed");
2294 goto out;
2295 }
2296
2297 index = (vid / 64);
2298 cb1->vlan_filter[index] &= ~((u64)(0x8000000000000000 >> (vid & 0x3F)));
2299
2300 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
2301 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2302 if (hret != H_SUCCESS)
2303 ehea_error("modify_ehea_port failed");
2304 out:
2305 kfree(cb1);
2306 return;
2307 }
2308
2309 int ehea_activate_qp(struct ehea_adapter *adapter, struct ehea_qp *qp)
2310 {
2311 int ret = -EIO;
2312 u64 hret;
2313 u16 dummy16 = 0;
2314 u64 dummy64 = 0;
2315 struct hcp_modify_qp_cb0 *cb0;
2316
2317 cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL);
2318 if (!cb0) {
2319 ret = -ENOMEM;
2320 goto out;
2321 }
2322
2323 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2324 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2325 if (hret != H_SUCCESS) {
2326 ehea_error("query_ehea_qp failed (1)");
2327 goto out;
2328 }
2329
2330 cb0->qp_ctl_reg = H_QP_CR_STATE_INITIALIZED;
2331 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2332 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2333 &dummy64, &dummy64, &dummy16, &dummy16);
2334 if (hret != H_SUCCESS) {
2335 ehea_error("modify_ehea_qp failed (1)");
2336 goto out;
2337 }
2338
2339 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2340 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2341 if (hret != H_SUCCESS) {
2342 ehea_error("query_ehea_qp failed (2)");
2343 goto out;
2344 }
2345
2346 cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_INITIALIZED;
2347 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2348 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2349 &dummy64, &dummy64, &dummy16, &dummy16);
2350 if (hret != H_SUCCESS) {
2351 ehea_error("modify_ehea_qp failed (2)");
2352 goto out;
2353 }
2354
2355 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2356 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2357 if (hret != H_SUCCESS) {
2358 ehea_error("query_ehea_qp failed (3)");
2359 goto out;
2360 }
2361
2362 cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_RDY2SND;
2363 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2364 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2365 &dummy64, &dummy64, &dummy16, &dummy16);
2366 if (hret != H_SUCCESS) {
2367 ehea_error("modify_ehea_qp failed (3)");
2368 goto out;
2369 }
2370
2371 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2372 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2373 if (hret != H_SUCCESS) {
2374 ehea_error("query_ehea_qp failed (4)");
2375 goto out;
2376 }
2377
2378 ret = 0;
2379 out:
2380 kfree(cb0);
2381 return ret;
2382 }
2383
2384 static int ehea_port_res_setup(struct ehea_port *port, int def_qps,
2385 int add_tx_qps)
2386 {
2387 int ret, i;
2388 struct port_res_cfg pr_cfg, pr_cfg_small_rx;
2389 enum ehea_eq_type eq_type = EHEA_EQ;
2390
2391 port->qp_eq = ehea_create_eq(port->adapter, eq_type,
2392 EHEA_MAX_ENTRIES_EQ, 1);
2393 if (!port->qp_eq) {
2394 ret = -EINVAL;
2395 ehea_error("ehea_create_eq failed (qp_eq)");
2396 goto out_kill_eq;
2397 }
2398
2399 pr_cfg.max_entries_rcq = rq1_entries + rq2_entries + rq3_entries;
2400 pr_cfg.max_entries_scq = sq_entries * 2;
2401 pr_cfg.max_entries_sq = sq_entries;
2402 pr_cfg.max_entries_rq1 = rq1_entries;
2403 pr_cfg.max_entries_rq2 = rq2_entries;
2404 pr_cfg.max_entries_rq3 = rq3_entries;
2405
2406 pr_cfg_small_rx.max_entries_rcq = 1;
2407 pr_cfg_small_rx.max_entries_scq = sq_entries;
2408 pr_cfg_small_rx.max_entries_sq = sq_entries;
2409 pr_cfg_small_rx.max_entries_rq1 = 1;
2410 pr_cfg_small_rx.max_entries_rq2 = 1;
2411 pr_cfg_small_rx.max_entries_rq3 = 1;
2412
2413 for (i = 0; i < def_qps; i++) {
2414 ret = ehea_init_port_res(port, &port->port_res[i], &pr_cfg, i);
2415 if (ret)
2416 goto out_clean_pr;
2417 }
2418 for (i = def_qps; i < def_qps + add_tx_qps; i++) {
2419 ret = ehea_init_port_res(port, &port->port_res[i],
2420 &pr_cfg_small_rx, i);
2421 if (ret)
2422 goto out_clean_pr;
2423 }
2424
2425 return 0;
2426
2427 out_clean_pr:
2428 while (--i >= 0)
2429 ehea_clean_portres(port, &port->port_res[i]);
2430
2431 out_kill_eq:
2432 ehea_destroy_eq(port->qp_eq);
2433 return ret;
2434 }
2435
2436 static int ehea_clean_all_portres(struct ehea_port *port)
2437 {
2438 int ret = 0;
2439 int i;
2440
2441 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
2442 ret |= ehea_clean_portres(port, &port->port_res[i]);
2443
2444 ret |= ehea_destroy_eq(port->qp_eq);
2445
2446 return ret;
2447 }
2448
2449 static void ehea_remove_adapter_mr(struct ehea_adapter *adapter)
2450 {
2451 if (adapter->active_ports)
2452 return;
2453
2454 ehea_rem_mr(&adapter->mr);
2455 }
2456
2457 static int ehea_add_adapter_mr(struct ehea_adapter *adapter)
2458 {
2459 if (adapter->active_ports)
2460 return 0;
2461
2462 return ehea_reg_kernel_mr(adapter, &adapter->mr);
2463 }
2464
2465 static int ehea_up(struct net_device *dev)
2466 {
2467 int ret, i;
2468 struct ehea_port *port = netdev_priv(dev);
2469
2470 if (port->state == EHEA_PORT_UP)
2471 return 0;
2472
2473 mutex_lock(&ehea_fw_handles.lock);
2474
2475 ret = ehea_port_res_setup(port, port->num_def_qps,
2476 port->num_add_tx_qps);
2477 if (ret) {
2478 ehea_error("port_res_failed");
2479 goto out;
2480 }
2481
2482 /* Set default QP for this port */
2483 ret = ehea_configure_port(port);
2484 if (ret) {
2485 ehea_error("ehea_configure_port failed. ret:%d", ret);
2486 goto out_clean_pr;
2487 }
2488
2489 ret = ehea_reg_interrupts(dev);
2490 if (ret) {
2491 ehea_error("reg_interrupts failed. ret:%d", ret);
2492 goto out_clean_pr;
2493 }
2494
2495 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
2496 ret = ehea_activate_qp(port->adapter, port->port_res[i].qp);
2497 if (ret) {
2498 ehea_error("activate_qp failed");
2499 goto out_free_irqs;
2500 }
2501 }
2502
2503 for (i = 0; i < port->num_def_qps; i++) {
2504 ret = ehea_fill_port_res(&port->port_res[i]);
2505 if (ret) {
2506 ehea_error("out_free_irqs");
2507 goto out_free_irqs;
2508 }
2509 }
2510
2511 spin_lock(&ehea_bcmc_regs.lock);
2512
2513 ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
2514 if (ret) {
2515 ret = -EIO;
2516 goto out_free_irqs;
2517 }
2518
2519 port->state = EHEA_PORT_UP;
2520
2521 ret = 0;
2522 goto out;
2523
2524 out_free_irqs:
2525 ehea_free_interrupts(dev);
2526
2527 out_clean_pr:
2528 ehea_clean_all_portres(port);
2529 out:
2530 if (ret)
2531 ehea_info("Failed starting %s. ret=%i", dev->name, ret);
2532
2533 ehea_update_bcmc_registrations();
2534 spin_unlock(&ehea_bcmc_regs.lock);
2535
2536 ehea_update_firmware_handles();
2537 mutex_unlock(&ehea_fw_handles.lock);
2538
2539 return ret;
2540 }
2541
2542 static void port_napi_disable(struct ehea_port *port)
2543 {
2544 int i;
2545
2546 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
2547 napi_disable(&port->port_res[i].napi);
2548 }
2549
2550 static void port_napi_enable(struct ehea_port *port)
2551 {
2552 int i;
2553
2554 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
2555 napi_enable(&port->port_res[i].napi);
2556 }
2557
2558 static int ehea_open(struct net_device *dev)
2559 {
2560 int ret;
2561 struct ehea_port *port = netdev_priv(dev);
2562
2563 mutex_lock(&port->port_lock);
2564
2565 if (netif_msg_ifup(port))
2566 ehea_info("enabling port %s", dev->name);
2567
2568 ret = ehea_up(dev);
2569 if (!ret) {
2570 port_napi_enable(port);
2571 netif_start_queue(dev);
2572 }
2573
2574 mutex_unlock(&port->port_lock);
2575
2576 return ret;
2577 }
2578
2579 static int ehea_down(struct net_device *dev)
2580 {
2581 int ret;
2582 struct ehea_port *port = netdev_priv(dev);
2583
2584 if (port->state == EHEA_PORT_DOWN)
2585 return 0;
2586
2587 mutex_lock(&ehea_fw_handles.lock);
2588
2589 spin_lock(&ehea_bcmc_regs.lock);
2590 ehea_drop_multicast_list(dev);
2591 ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
2592
2593 ehea_free_interrupts(dev);
2594
2595 port->state = EHEA_PORT_DOWN;
2596
2597 ehea_update_bcmc_registrations();
2598 spin_unlock(&ehea_bcmc_regs.lock);
2599
2600 ret = ehea_clean_all_portres(port);
2601 if (ret)
2602 ehea_info("Failed freeing resources for %s. ret=%i",
2603 dev->name, ret);
2604
2605 ehea_update_firmware_handles();
2606 mutex_unlock(&ehea_fw_handles.lock);
2607
2608 return ret;
2609 }
2610
2611 static int ehea_stop(struct net_device *dev)
2612 {
2613 int ret;
2614 struct ehea_port *port = netdev_priv(dev);
2615
2616 if (netif_msg_ifdown(port))
2617 ehea_info("disabling port %s", dev->name);
2618
2619 set_bit(__EHEA_DISABLE_PORT_RESET, &port->flags);
2620 cancel_work_sync(&port->reset_task);
2621 mutex_lock(&port->port_lock);
2622 netif_stop_queue(dev);
2623 port_napi_disable(port);
2624 ret = ehea_down(dev);
2625 mutex_unlock(&port->port_lock);
2626 clear_bit(__EHEA_DISABLE_PORT_RESET, &port->flags);
2627 return ret;
2628 }
2629
2630 static void ehea_purge_sq(struct ehea_qp *orig_qp)
2631 {
2632 struct ehea_qp qp = *orig_qp;
2633 struct ehea_qp_init_attr *init_attr = &qp.init_attr;
2634 struct ehea_swqe *swqe;
2635 int wqe_index;
2636 int i;
2637
2638 for (i = 0; i < init_attr->act_nr_send_wqes; i++) {
2639 swqe = ehea_get_swqe(&qp, &wqe_index);
2640 swqe->tx_control |= EHEA_SWQE_PURGE;
2641 }
2642 }
2643
2644 static void ehea_flush_sq(struct ehea_port *port)
2645 {
2646 int i;
2647
2648 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
2649 struct ehea_port_res *pr = &port->port_res[i];
2650 int swqe_max = pr->sq_skba_size - 2 - pr->swqe_ll_count;
2651 int k = 0;
2652 while (atomic_read(&pr->swqe_avail) < swqe_max) {
2653 msleep(5);
2654 if (++k == 20)
2655 break;
2656 }
2657 }
2658 }
2659
2660 int ehea_stop_qps(struct net_device *dev)
2661 {
2662 struct ehea_port *port = netdev_priv(dev);
2663 struct ehea_adapter *adapter = port->adapter;
2664 struct hcp_modify_qp_cb0 *cb0;
2665 int ret = -EIO;
2666 int dret;
2667 int i;
2668 u64 hret;
2669 u64 dummy64 = 0;
2670 u16 dummy16 = 0;
2671
2672 cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL);
2673 if (!cb0) {
2674 ret = -ENOMEM;
2675 goto out;
2676 }
2677
2678 for (i = 0; i < (port->num_def_qps + port->num_add_tx_qps); i++) {
2679 struct ehea_port_res *pr = &port->port_res[i];
2680 struct ehea_qp *qp = pr->qp;
2681
2682 /* Purge send queue */
2683 ehea_purge_sq(qp);
2684
2685 /* Disable queue pair */
2686 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2687 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2688 cb0);
2689 if (hret != H_SUCCESS) {
2690 ehea_error("query_ehea_qp failed (1)");
2691 goto out;
2692 }
2693
2694 cb0->qp_ctl_reg = (cb0->qp_ctl_reg & H_QP_CR_RES_STATE) << 8;
2695 cb0->qp_ctl_reg &= ~H_QP_CR_ENABLED;
2696
2697 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2698 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG,
2699 1), cb0, &dummy64,
2700 &dummy64, &dummy16, &dummy16);
2701 if (hret != H_SUCCESS) {
2702 ehea_error("modify_ehea_qp failed (1)");
2703 goto out;
2704 }
2705
2706 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2707 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2708 cb0);
2709 if (hret != H_SUCCESS) {
2710 ehea_error("query_ehea_qp failed (2)");
2711 goto out;
2712 }
2713
2714 /* deregister shared memory regions */
2715 dret = ehea_rem_smrs(pr);
2716 if (dret) {
2717 ehea_error("unreg shared memory region failed");
2718 goto out;
2719 }
2720 }
2721
2722 ret = 0;
2723 out:
2724 kfree(cb0);
2725
2726 return ret;
2727 }
2728
2729 void ehea_update_rqs(struct ehea_qp *orig_qp, struct ehea_port_res *pr)
2730 {
2731 struct ehea_qp qp = *orig_qp;
2732 struct ehea_qp_init_attr *init_attr = &qp.init_attr;
2733 struct ehea_rwqe *rwqe;
2734 struct sk_buff **skba_rq2 = pr->rq2_skba.arr;
2735 struct sk_buff **skba_rq3 = pr->rq3_skba.arr;
2736 struct sk_buff *skb;
2737 u32 lkey = pr->recv_mr.lkey;
2738
2739
2740 int i;
2741 int index;
2742
2743 for (i = 0; i < init_attr->act_nr_rwqes_rq2 + 1; i++) {
2744 rwqe = ehea_get_next_rwqe(&qp, 2);
2745 rwqe->sg_list[0].l_key = lkey;
2746 index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, rwqe->wr_id);
2747 skb = skba_rq2[index];
2748 if (skb)
2749 rwqe->sg_list[0].vaddr = ehea_map_vaddr(skb->data);
2750 }
2751
2752 for (i = 0; i < init_attr->act_nr_rwqes_rq3 + 1; i++) {
2753 rwqe = ehea_get_next_rwqe(&qp, 3);
2754 rwqe->sg_list[0].l_key = lkey;
2755 index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, rwqe->wr_id);
2756 skb = skba_rq3[index];
2757 if (skb)
2758 rwqe->sg_list[0].vaddr = ehea_map_vaddr(skb->data);
2759 }
2760 }
2761
2762 int ehea_restart_qps(struct net_device *dev)
2763 {
2764 struct ehea_port *port = netdev_priv(dev);
2765 struct ehea_adapter *adapter = port->adapter;
2766 int ret = 0;
2767 int i;
2768
2769 struct hcp_modify_qp_cb0 *cb0;
2770 u64 hret;
2771 u64 dummy64 = 0;
2772 u16 dummy16 = 0;
2773
2774 cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL);
2775 if (!cb0) {
2776 ret = -ENOMEM;
2777 goto out;
2778 }
2779
2780 for (i = 0; i < (port->num_def_qps + port->num_add_tx_qps); i++) {
2781 struct ehea_port_res *pr = &port->port_res[i];
2782 struct ehea_qp *qp = pr->qp;
2783
2784 ret = ehea_gen_smrs(pr);
2785 if (ret) {
2786 ehea_error("creation of shared memory regions failed");
2787 goto out;
2788 }
2789
2790 ehea_update_rqs(qp, pr);
2791
2792 /* Enable queue pair */
2793 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2794 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2795 cb0);
2796 if (hret != H_SUCCESS) {
2797 ehea_error("query_ehea_qp failed (1)");
2798 goto out;
2799 }
2800
2801 cb0->qp_ctl_reg = (cb0->qp_ctl_reg & H_QP_CR_RES_STATE) << 8;
2802 cb0->qp_ctl_reg |= H_QP_CR_ENABLED;
2803
2804 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2805 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG,
2806 1), cb0, &dummy64,
2807 &dummy64, &dummy16, &dummy16);
2808 if (hret != H_SUCCESS) {
2809 ehea_error("modify_ehea_qp failed (1)");
2810 goto out;
2811 }
2812
2813 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2814 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2815 cb0);
2816 if (hret != H_SUCCESS) {
2817 ehea_error("query_ehea_qp failed (2)");
2818 goto out;
2819 }
2820
2821 /* refill entire queue */
2822 ehea_refill_rq1(pr, pr->rq1_skba.index, 0);
2823 ehea_refill_rq2(pr, 0);
2824 ehea_refill_rq3(pr, 0);
2825 }
2826 out:
2827 kfree(cb0);
2828
2829 return ret;
2830 }
2831
2832 static void ehea_reset_port(struct work_struct *work)
2833 {
2834 int ret;
2835 struct ehea_port *port =
2836 container_of(work, struct ehea_port, reset_task);
2837 struct net_device *dev = port->netdev;
2838
2839 port->resets++;
2840 mutex_lock(&port->port_lock);
2841 netif_stop_queue(dev);
2842
2843 port_napi_disable(port);
2844
2845 ehea_down(dev);
2846
2847 ret = ehea_up(dev);
2848 if (ret)
2849 goto out;
2850
2851 ehea_set_multicast_list(dev);
2852
2853 if (netif_msg_timer(port))
2854 ehea_info("Device %s resetted successfully", dev->name);
2855
2856 port_napi_enable(port);
2857
2858 netif_wake_queue(dev);
2859 out:
2860 mutex_unlock(&port->port_lock);
2861 return;
2862 }
2863
2864 static void ehea_rereg_mrs(struct work_struct *work)
2865 {
2866 int ret, i;
2867 struct ehea_adapter *adapter;
2868
2869 mutex_lock(&dlpar_mem_lock);
2870 ehea_info("LPAR memory changed - re-initializing driver");
2871
2872 list_for_each_entry(adapter, &adapter_list, list)
2873 if (adapter->active_ports) {
2874 /* Shutdown all ports */
2875 for (i = 0; i < EHEA_MAX_PORTS; i++) {
2876 struct ehea_port *port = adapter->port[i];
2877 struct net_device *dev;
2878
2879 if (!port)
2880 continue;
2881
2882 dev = port->netdev;
2883
2884 if (dev->flags & IFF_UP) {
2885 mutex_lock(&port->port_lock);
2886 netif_stop_queue(dev);
2887 ehea_flush_sq(port);
2888 ret = ehea_stop_qps(dev);
2889 if (ret) {
2890 mutex_unlock(&port->port_lock);
2891 goto out;
2892 }
2893 port_napi_disable(port);
2894 mutex_unlock(&port->port_lock);
2895 }
2896 }
2897
2898 /* Unregister old memory region */
2899 ret = ehea_rem_mr(&adapter->mr);
2900 if (ret) {
2901 ehea_error("unregister MR failed - driver"
2902 " inoperable!");
2903 goto out;
2904 }
2905 }
2906
2907 clear_bit(__EHEA_STOP_XFER, &ehea_driver_flags);
2908
2909 list_for_each_entry(adapter, &adapter_list, list)
2910 if (adapter->active_ports) {
2911 /* Register new memory region */
2912 ret = ehea_reg_kernel_mr(adapter, &adapter->mr);
2913 if (ret) {
2914 ehea_error("register MR failed - driver"
2915 " inoperable!");
2916 goto out;
2917 }
2918
2919 /* Restart all ports */
2920 for (i = 0; i < EHEA_MAX_PORTS; i++) {
2921 struct ehea_port *port = adapter->port[i];
2922
2923 if (port) {
2924 struct net_device *dev = port->netdev;
2925
2926 if (dev->flags & IFF_UP) {
2927 mutex_lock(&port->port_lock);
2928 port_napi_enable(port);
2929 ret = ehea_restart_qps(dev);
2930 if (!ret)
2931 netif_wake_queue(dev);
2932 mutex_unlock(&port->port_lock);
2933 }
2934 }
2935 }
2936 }
2937 ehea_info("re-initializing driver complete");
2938 out:
2939 mutex_unlock(&dlpar_mem_lock);
2940 return;
2941 }
2942
2943 static void ehea_tx_watchdog(struct net_device *dev)
2944 {
2945 struct ehea_port *port = netdev_priv(dev);
2946
2947 if (netif_carrier_ok(dev) &&
2948 !test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))
2949 ehea_schedule_port_reset(port);
2950 }
2951
2952 int ehea_sense_adapter_attr(struct ehea_adapter *adapter)
2953 {
2954 struct hcp_query_ehea *cb;
2955 u64 hret;
2956 int ret;
2957
2958 cb = kzalloc(PAGE_SIZE, GFP_KERNEL);
2959 if (!cb) {
2960 ret = -ENOMEM;
2961 goto out;
2962 }
2963
2964 hret = ehea_h_query_ehea(adapter->handle, cb);
2965
2966 if (hret != H_SUCCESS) {
2967 ret = -EIO;
2968 goto out_herr;
2969 }
2970
2971 adapter->max_mc_mac = cb->max_mc_mac - 1;
2972 ret = 0;
2973
2974 out_herr:
2975 kfree(cb);
2976 out:
2977 return ret;
2978 }
2979
2980 int ehea_get_jumboframe_status(struct ehea_port *port, int *jumbo)
2981 {
2982 struct hcp_ehea_port_cb4 *cb4;
2983 u64 hret;
2984 int ret = 0;
2985
2986 *jumbo = 0;
2987
2988 /* (Try to) enable *jumbo frames */
2989 cb4 = kzalloc(PAGE_SIZE, GFP_KERNEL);
2990 if (!cb4) {
2991 ehea_error("no mem for cb4");
2992 ret = -ENOMEM;
2993 goto out;
2994 } else {
2995 hret = ehea_h_query_ehea_port(port->adapter->handle,
2996 port->logical_port_id,
2997 H_PORT_CB4,
2998 H_PORT_CB4_JUMBO, cb4);
2999 if (hret == H_SUCCESS) {
3000 if (cb4->jumbo_frame)
3001 *jumbo = 1;
3002 else {
3003 cb4->jumbo_frame = 1;
3004 hret = ehea_h_modify_ehea_port(port->adapter->
3005 handle,
3006 port->
3007 logical_port_id,
3008 H_PORT_CB4,
3009 H_PORT_CB4_JUMBO,
3010 cb4);
3011 if (hret == H_SUCCESS)
3012 *jumbo = 1;
3013 }
3014 } else
3015 ret = -EINVAL;
3016
3017 kfree(cb4);
3018 }
3019 out:
3020 return ret;
3021 }
3022
3023 static ssize_t ehea_show_port_id(struct device *dev,
3024 struct device_attribute *attr, char *buf)
3025 {
3026 struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev);
3027 return sprintf(buf, "%d", port->logical_port_id);
3028 }
3029
3030 static DEVICE_ATTR(log_port_id, S_IRUSR | S_IRGRP | S_IROTH, ehea_show_port_id,
3031 NULL);
3032
3033 static void __devinit logical_port_release(struct device *dev)
3034 {
3035 struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev);
3036 of_node_put(port->ofdev.node);
3037 }
3038
3039 static struct device *ehea_register_port(struct ehea_port *port,
3040 struct device_node *dn)
3041 {
3042 int ret;
3043
3044 port->ofdev.node = of_node_get(dn);
3045 port->ofdev.dev.parent = &port->adapter->ofdev->dev;
3046 port->ofdev.dev.bus = &ibmebus_bus_type;
3047
3048 sprintf(port->ofdev.dev.bus_id, "port%d", port_name_cnt++);
3049 port->ofdev.dev.release = logical_port_release;
3050
3051 ret = of_device_register(&port->ofdev);
3052 if (ret) {
3053 ehea_error("failed to register device. ret=%d", ret);
3054 goto out;
3055 }
3056
3057 ret = device_create_file(&port->ofdev.dev, &dev_attr_log_port_id);
3058 if (ret) {
3059 ehea_error("failed to register attributes, ret=%d", ret);
3060 goto out_unreg_of_dev;
3061 }
3062
3063 return &port->ofdev.dev;
3064
3065 out_unreg_of_dev:
3066 of_device_unregister(&port->ofdev);
3067 out:
3068 return NULL;
3069 }
3070
3071 static void ehea_unregister_port(struct ehea_port *port)
3072 {
3073 device_remove_file(&port->ofdev.dev, &dev_attr_log_port_id);
3074 of_device_unregister(&port->ofdev);
3075 }
3076
3077 struct ehea_port *ehea_setup_single_port(struct ehea_adapter *adapter,
3078 u32 logical_port_id,
3079 struct device_node *dn)
3080 {
3081 int ret;
3082 struct net_device *dev;
3083 struct ehea_port *port;
3084 struct device *port_dev;
3085 int jumbo;
3086
3087 /* allocate memory for the port structures */
3088 dev = alloc_etherdev(sizeof(struct ehea_port));
3089
3090 if (!dev) {
3091 ehea_error("no mem for net_device");
3092 ret = -ENOMEM;
3093 goto out_err;
3094 }
3095
3096 port = netdev_priv(dev);
3097
3098 mutex_init(&port->port_lock);
3099 port->state = EHEA_PORT_DOWN;
3100 port->sig_comp_iv = sq_entries / 10;
3101
3102 port->adapter = adapter;
3103 port->netdev = dev;
3104 port->logical_port_id = logical_port_id;
3105
3106 port->msg_enable = netif_msg_init(msg_level, EHEA_MSG_DEFAULT);
3107
3108 port->mc_list = kzalloc(sizeof(struct ehea_mc_list), GFP_KERNEL);
3109 if (!port->mc_list) {
3110 ret = -ENOMEM;
3111 goto out_free_ethdev;
3112 }
3113
3114 INIT_LIST_HEAD(&port->mc_list->list);
3115
3116 ret = ehea_sense_port_attr(port);
3117 if (ret)
3118 goto out_free_mc_list;
3119
3120 port_dev = ehea_register_port(port, dn);
3121 if (!port_dev)
3122 goto out_free_mc_list;
3123
3124 SET_NETDEV_DEV(dev, port_dev);
3125
3126 /* initialize net_device structure */
3127 memcpy(dev->dev_addr, &port->mac_addr, ETH_ALEN);
3128
3129 dev->open = ehea_open;
3130 #ifdef CONFIG_NET_POLL_CONTROLLER
3131 dev->poll_controller = ehea_netpoll;
3132 #endif
3133 dev->stop = ehea_stop;
3134 dev->hard_start_xmit = ehea_start_xmit;
3135 dev->get_stats = ehea_get_stats;
3136 dev->set_multicast_list = ehea_set_multicast_list;
3137 dev->set_mac_address = ehea_set_mac_addr;
3138 dev->change_mtu = ehea_change_mtu;
3139 dev->vlan_rx_register = ehea_vlan_rx_register;
3140 dev->vlan_rx_add_vid = ehea_vlan_rx_add_vid;
3141 dev->vlan_rx_kill_vid = ehea_vlan_rx_kill_vid;
3142 dev->features = NETIF_F_SG | NETIF_F_FRAGLIST | NETIF_F_TSO
3143 | NETIF_F_HIGHDMA | NETIF_F_IP_CSUM | NETIF_F_HW_VLAN_TX
3144 | NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_FILTER
3145 | NETIF_F_LLTX;
3146 dev->tx_timeout = &ehea_tx_watchdog;
3147 dev->watchdog_timeo = EHEA_WATCH_DOG_TIMEOUT;
3148
3149 INIT_WORK(&port->reset_task, ehea_reset_port);
3150 ehea_set_ethtool_ops(dev);
3151
3152 ret = register_netdev(dev);
3153 if (ret) {
3154 ehea_error("register_netdev failed. ret=%d", ret);
3155 goto out_unreg_port;
3156 }
3157
3158 port->lro_max_aggr = lro_max_aggr;
3159
3160 ret = ehea_get_jumboframe_status(port, &jumbo);
3161 if (ret)
3162 ehea_error("failed determining jumbo frame status for %s",
3163 port->netdev->name);
3164
3165 ehea_info("%s: Jumbo frames are %sabled", dev->name,
3166 jumbo == 1 ? "en" : "dis");
3167
3168 adapter->active_ports++;
3169
3170 return port;
3171
3172 out_unreg_port:
3173 ehea_unregister_port(port);
3174
3175 out_free_mc_list:
3176 kfree(port->mc_list);
3177
3178 out_free_ethdev:
3179 free_netdev(dev);
3180
3181 out_err:
3182 ehea_error("setting up logical port with id=%d failed, ret=%d",
3183 logical_port_id, ret);
3184 return NULL;
3185 }
3186
3187 static void ehea_shutdown_single_port(struct ehea_port *port)
3188 {
3189 struct ehea_adapter *adapter = port->adapter;
3190 unregister_netdev(port->netdev);
3191 ehea_unregister_port(port);
3192 kfree(port->mc_list);
3193 free_netdev(port->netdev);
3194 adapter->active_ports--;
3195 }
3196
3197 static int ehea_setup_ports(struct ehea_adapter *adapter)
3198 {
3199 struct device_node *lhea_dn;
3200 struct device_node *eth_dn = NULL;
3201
3202 const u32 *dn_log_port_id;
3203 int i = 0;
3204
3205 lhea_dn = adapter->ofdev->node;
3206 while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) {
3207
3208 dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no",
3209 NULL);
3210 if (!dn_log_port_id) {
3211 ehea_error("bad device node: eth_dn name=%s",
3212 eth_dn->full_name);
3213 continue;
3214 }
3215
3216 if (ehea_add_adapter_mr(adapter)) {
3217 ehea_error("creating MR failed");
3218 of_node_put(eth_dn);
3219 return -EIO;
3220 }
3221
3222 adapter->port[i] = ehea_setup_single_port(adapter,
3223 *dn_log_port_id,
3224 eth_dn);
3225 if (adapter->port[i])
3226 ehea_info("%s -> logical port id #%d",
3227 adapter->port[i]->netdev->name,
3228 *dn_log_port_id);
3229 else
3230 ehea_remove_adapter_mr(adapter);
3231
3232 i++;
3233 };
3234 return 0;
3235 }
3236
3237 static struct device_node *ehea_get_eth_dn(struct ehea_adapter *adapter,
3238 u32 logical_port_id)
3239 {
3240 struct device_node *lhea_dn;
3241 struct device_node *eth_dn = NULL;
3242 const u32 *dn_log_port_id;
3243
3244 lhea_dn = adapter->ofdev->node;
3245 while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) {
3246
3247 dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no",
3248 NULL);
3249 if (dn_log_port_id)
3250 if (*dn_log_port_id == logical_port_id)
3251 return eth_dn;
3252 };
3253
3254 return NULL;
3255 }
3256
3257 static ssize_t ehea_probe_port(struct device *dev,
3258 struct device_attribute *attr,
3259 const char *buf, size_t count)
3260 {
3261 struct ehea_adapter *adapter = dev->driver_data;
3262 struct ehea_port *port;
3263 struct device_node *eth_dn = NULL;
3264 int i;
3265
3266 u32 logical_port_id;
3267
3268 sscanf(buf, "%d", &logical_port_id);
3269
3270 port = ehea_get_port(adapter, logical_port_id);
3271
3272 if (port) {
3273 ehea_info("adding port with logical port id=%d failed. port "
3274 "already configured as %s.", logical_port_id,
3275 port->netdev->name);
3276 return -EINVAL;
3277 }
3278
3279 eth_dn = ehea_get_eth_dn(adapter, logical_port_id);
3280
3281 if (!eth_dn) {
3282 ehea_info("no logical port with id %d found", logical_port_id);
3283 return -EINVAL;
3284 }
3285
3286 if (ehea_add_adapter_mr(adapter)) {
3287 ehea_error("creating MR failed");
3288 return -EIO;
3289 }
3290
3291 port = ehea_setup_single_port(adapter, logical_port_id, eth_dn);
3292
3293 of_node_put(eth_dn);
3294
3295 if (port) {
3296 for (i = 0; i < EHEA_MAX_PORTS; i++)
3297 if (!adapter->port[i]) {
3298 adapter->port[i] = port;
3299 break;
3300 }
3301
3302 ehea_info("added %s (logical port id=%d)", port->netdev->name,
3303 logical_port_id);
3304 } else {
3305 ehea_remove_adapter_mr(adapter);
3306 return -EIO;
3307 }
3308
3309 return (ssize_t) count;
3310 }
3311
3312 static ssize_t ehea_remove_port(struct device *dev,
3313 struct device_attribute *attr,
3314 const char *buf, size_t count)
3315 {
3316 struct ehea_adapter *adapter = dev->driver_data;
3317 struct ehea_port *port;
3318 int i;
3319 u32 logical_port_id;
3320
3321 sscanf(buf, "%d", &logical_port_id);
3322
3323 port = ehea_get_port(adapter, logical_port_id);
3324
3325 if (port) {
3326 ehea_info("removed %s (logical port id=%d)", port->netdev->name,
3327 logical_port_id);
3328
3329 ehea_shutdown_single_port(port);
3330
3331 for (i = 0; i < EHEA_MAX_PORTS; i++)
3332 if (adapter->port[i] == port) {
3333 adapter->port[i] = NULL;
3334 break;
3335 }
3336 } else {
3337 ehea_error("removing port with logical port id=%d failed. port "
3338 "not configured.", logical_port_id);
3339 return -EINVAL;
3340 }
3341
3342 ehea_remove_adapter_mr(adapter);
3343
3344 return (ssize_t) count;
3345 }
3346
3347 static DEVICE_ATTR(probe_port, S_IWUSR, NULL, ehea_probe_port);
3348 static DEVICE_ATTR(remove_port, S_IWUSR, NULL, ehea_remove_port);
3349
3350 int ehea_create_device_sysfs(struct of_device *dev)
3351 {
3352 int ret = device_create_file(&dev->dev, &dev_attr_probe_port);
3353 if (ret)
3354 goto out;
3355
3356 ret = device_create_file(&dev->dev, &dev_attr_remove_port);
3357 out:
3358 return ret;
3359 }
3360
3361 void ehea_remove_device_sysfs(struct of_device *dev)
3362 {
3363 device_remove_file(&dev->dev, &dev_attr_probe_port);
3364 device_remove_file(&dev->dev, &dev_attr_remove_port);
3365 }
3366
3367 static int __devinit ehea_probe_adapter(struct of_device *dev,
3368 const struct of_device_id *id)
3369 {
3370 struct ehea_adapter *adapter;
3371 const u64 *adapter_handle;
3372 int ret;
3373
3374 if (!dev || !dev->node) {
3375 ehea_error("Invalid ibmebus device probed");
3376 return -EINVAL;
3377 }
3378 mutex_lock(&ehea_fw_handles.lock);
3379
3380 adapter = kzalloc(sizeof(*adapter), GFP_KERNEL);
3381 if (!adapter) {
3382 ret = -ENOMEM;
3383 dev_err(&dev->dev, "no mem for ehea_adapter\n");
3384 goto out;
3385 }
3386
3387 list_add(&adapter->list, &adapter_list);
3388
3389 adapter->ofdev = dev;
3390
3391 adapter_handle = of_get_property(dev->node, "ibm,hea-handle",
3392 NULL);
3393 if (adapter_handle)
3394 adapter->handle = *adapter_handle;
3395
3396 if (!adapter->handle) {
3397 dev_err(&dev->dev, "failed getting handle for adapter"
3398 " '%s'\n", dev->node->full_name);
3399 ret = -ENODEV;
3400 goto out_free_ad;
3401 }
3402
3403 adapter->pd = EHEA_PD_ID;
3404
3405 dev->dev.driver_data = adapter;
3406
3407
3408 /* initialize adapter and ports */
3409 /* get adapter properties */
3410 ret = ehea_sense_adapter_attr(adapter);
3411 if (ret) {
3412 dev_err(&dev->dev, "sense_adapter_attr failed: %d\n", ret);
3413 goto out_free_ad;
3414 }
3415
3416 adapter->neq = ehea_create_eq(adapter,
3417 EHEA_NEQ, EHEA_MAX_ENTRIES_EQ, 1);
3418 if (!adapter->neq) {
3419 ret = -EIO;
3420 dev_err(&dev->dev, "NEQ creation failed\n");
3421 goto out_free_ad;
3422 }
3423
3424 tasklet_init(&adapter->neq_tasklet, ehea_neq_tasklet,
3425 (unsigned long)adapter);
3426
3427 ret = ibmebus_request_irq(adapter->neq->attr.ist1,
3428 ehea_interrupt_neq, IRQF_DISABLED,
3429 "ehea_neq", adapter);
3430 if (ret) {
3431 dev_err(&dev->dev, "requesting NEQ IRQ failed\n");
3432 goto out_kill_eq;
3433 }
3434
3435 ret = ehea_create_device_sysfs(dev);
3436 if (ret)
3437 goto out_free_irq;
3438
3439 ret = ehea_setup_ports(adapter);
3440 if (ret) {
3441 dev_err(&dev->dev, "setup_ports failed\n");
3442 goto out_rem_dev_sysfs;
3443 }
3444
3445 ret = 0;
3446 goto out;
3447
3448 out_rem_dev_sysfs:
3449 ehea_remove_device_sysfs(dev);
3450
3451 out_free_irq:
3452 ibmebus_free_irq(adapter->neq->attr.ist1, adapter);
3453
3454 out_kill_eq:
3455 ehea_destroy_eq(adapter->neq);
3456
3457 out_free_ad:
3458 kfree(adapter);
3459
3460 out:
3461 ehea_update_firmware_handles();
3462 mutex_unlock(&ehea_fw_handles.lock);
3463 return ret;
3464 }
3465
3466 static int __devexit ehea_remove(struct of_device *dev)
3467 {
3468 struct ehea_adapter *adapter = dev->dev.driver_data;
3469 int i;
3470
3471 for (i = 0; i < EHEA_MAX_PORTS; i++)
3472 if (adapter->port[i]) {
3473 ehea_shutdown_single_port(adapter->port[i]);
3474 adapter->port[i] = NULL;
3475 }
3476
3477 ehea_remove_device_sysfs(dev);
3478
3479 flush_scheduled_work();
3480
3481 mutex_lock(&ehea_fw_handles.lock);
3482
3483 ibmebus_free_irq(adapter->neq->attr.ist1, adapter);
3484 tasklet_kill(&adapter->neq_tasklet);
3485
3486 ehea_destroy_eq(adapter->neq);
3487 ehea_remove_adapter_mr(adapter);
3488 list_del(&adapter->list);
3489 kfree(adapter);
3490
3491 ehea_update_firmware_handles();
3492 mutex_unlock(&ehea_fw_handles.lock);
3493
3494 return 0;
3495 }
3496
3497 void ehea_crash_handler(void)
3498 {
3499 int i;
3500
3501 if (ehea_fw_handles.arr)
3502 for (i = 0; i < ehea_fw_handles.num_entries; i++)
3503 ehea_h_free_resource(ehea_fw_handles.arr[i].adh,
3504 ehea_fw_handles.arr[i].fwh,
3505 FORCE_FREE);
3506
3507 if (ehea_bcmc_regs.arr)
3508 for (i = 0; i < ehea_bcmc_regs.num_entries; i++)
3509 ehea_h_reg_dereg_bcmc(ehea_bcmc_regs.arr[i].adh,
3510 ehea_bcmc_regs.arr[i].port_id,
3511 ehea_bcmc_regs.arr[i].reg_type,
3512 ehea_bcmc_regs.arr[i].macaddr,
3513 0, H_DEREG_BCMC);
3514 }
3515
3516 static int ehea_mem_notifier(struct notifier_block *nb,
3517 unsigned long action, void *data)
3518 {
3519 struct memory_notify *arg = data;
3520 switch (action) {
3521 case MEM_CANCEL_OFFLINE:
3522 ehea_info("memory offlining canceled");
3523 /* Readd canceled memory block */
3524 case MEM_ONLINE:
3525 ehea_info("memory is going online");
3526 if (ehea_add_sect_bmap(arg->start_pfn, arg->nr_pages))
3527 return NOTIFY_BAD;
3528 ehea_rereg_mrs(NULL);
3529 break;
3530 case MEM_GOING_OFFLINE:
3531 ehea_info("memory is going offline");
3532 if (ehea_rem_sect_bmap(arg->start_pfn, arg->nr_pages))
3533 return NOTIFY_BAD;
3534 ehea_rereg_mrs(NULL);
3535 break;
3536 default:
3537 break;
3538 }
3539 return NOTIFY_OK;
3540 }
3541
3542 static struct notifier_block ehea_mem_nb = {
3543 .notifier_call = ehea_mem_notifier,
3544 };
3545
3546 static int ehea_reboot_notifier(struct notifier_block *nb,
3547 unsigned long action, void *unused)
3548 {
3549 if (action == SYS_RESTART) {
3550 ehea_info("Reboot: freeing all eHEA resources");
3551 ibmebus_unregister_driver(&ehea_driver);
3552 }
3553 return NOTIFY_DONE;
3554 }
3555
3556 static struct notifier_block ehea_reboot_nb = {
3557 .notifier_call = ehea_reboot_notifier,
3558 };
3559
3560 static int check_module_parm(void)
3561 {
3562 int ret = 0;
3563
3564 if ((rq1_entries < EHEA_MIN_ENTRIES_QP) ||
3565 (rq1_entries > EHEA_MAX_ENTRIES_RQ1)) {
3566 ehea_info("Bad parameter: rq1_entries");
3567 ret = -EINVAL;
3568 }
3569 if ((rq2_entries < EHEA_MIN_ENTRIES_QP) ||
3570 (rq2_entries > EHEA_MAX_ENTRIES_RQ2)) {
3571 ehea_info("Bad parameter: rq2_entries");
3572 ret = -EINVAL;
3573 }
3574 if ((rq3_entries < EHEA_MIN_ENTRIES_QP) ||
3575 (rq3_entries > EHEA_MAX_ENTRIES_RQ3)) {
3576 ehea_info("Bad parameter: rq3_entries");
3577 ret = -EINVAL;
3578 }
3579 if ((sq_entries < EHEA_MIN_ENTRIES_QP) ||
3580 (sq_entries > EHEA_MAX_ENTRIES_SQ)) {
3581 ehea_info("Bad parameter: sq_entries");
3582 ret = -EINVAL;
3583 }
3584
3585 return ret;
3586 }
3587
3588 static ssize_t ehea_show_capabilities(struct device_driver *drv,
3589 char *buf)
3590 {
3591 return sprintf(buf, "%d", EHEA_CAPABILITIES);
3592 }
3593
3594 static DRIVER_ATTR(capabilities, S_IRUSR | S_IRGRP | S_IROTH,
3595 ehea_show_capabilities, NULL);
3596
3597 int __init ehea_module_init(void)
3598 {
3599 int ret;
3600
3601 printk(KERN_INFO "IBM eHEA ethernet device driver (Release %s)\n",
3602 DRV_VERSION);
3603
3604
3605 INIT_WORK(&ehea_rereg_mr_task, ehea_rereg_mrs);
3606 memset(&ehea_fw_handles, 0, sizeof(ehea_fw_handles));
3607 memset(&ehea_bcmc_regs, 0, sizeof(ehea_bcmc_regs));
3608
3609 mutex_init(&ehea_fw_handles.lock);
3610 spin_lock_init(&ehea_bcmc_regs.lock);
3611
3612 ret = check_module_parm();
3613 if (ret)
3614 goto out;
3615
3616 ret = ehea_create_busmap();
3617 if (ret)
3618 goto out;
3619
3620 ret = register_reboot_notifier(&ehea_reboot_nb);
3621 if (ret)
3622 ehea_info("failed registering reboot notifier");
3623
3624 ret = register_memory_notifier(&ehea_mem_nb);
3625 if (ret)
3626 ehea_info("failed registering memory remove notifier");
3627
3628 ret = crash_shutdown_register(&ehea_crash_handler);
3629 if (ret)
3630 ehea_info("failed registering crash handler");
3631
3632 ret = ibmebus_register_driver(&ehea_driver);
3633 if (ret) {
3634 ehea_error("failed registering eHEA device driver on ebus");
3635 goto out2;
3636 }
3637
3638 ret = driver_create_file(&ehea_driver.driver,
3639 &driver_attr_capabilities);
3640 if (ret) {
3641 ehea_error("failed to register capabilities attribute, ret=%d",
3642 ret);
3643 goto out3;
3644 }
3645
3646 return ret;
3647
3648 out3:
3649 ibmebus_unregister_driver(&ehea_driver);
3650 out2:
3651 unregister_memory_notifier(&ehea_mem_nb);
3652 unregister_reboot_notifier(&ehea_reboot_nb);
3653 crash_shutdown_unregister(&ehea_crash_handler);
3654 out:
3655 return ret;
3656 }
3657
3658 static void __exit ehea_module_exit(void)
3659 {
3660 int ret;
3661
3662 flush_scheduled_work();
3663 driver_remove_file(&ehea_driver.driver, &driver_attr_capabilities);
3664 ibmebus_unregister_driver(&ehea_driver);
3665 unregister_reboot_notifier(&ehea_reboot_nb);
3666 ret = crash_shutdown_unregister(&ehea_crash_handler);
3667 if (ret)
3668 ehea_info("failed unregistering crash handler");
3669 unregister_memory_notifier(&ehea_mem_nb);
3670 kfree(ehea_fw_handles.arr);
3671 kfree(ehea_bcmc_regs.arr);
3672 ehea_destroy_busmap();
3673 }
3674
3675 module_init(ehea_module_init);
3676 module_exit(ehea_module_exit);
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