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ehea: Fix napi list corruption on ifconfig down
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / net / ehea / ehea_main.c
blob682f41197c70b1d2db373564dc25c0e35c3f3e4a
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 u64 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 %016lx %016lx\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 dev->last_rx = jiffies;
737 } else {
738 pr->p_stats.poll_receive_errors++;
739 port_reset = ehea_treat_poll_error(pr, rq, cqe,
740 &processed_rq2,
741 &processed_rq3);
742 if (port_reset)
743 break;
744 }
745 cqe = ehea_poll_rq1(qp, &wqe_index);
746 }
747 if (use_lro)
748 lro_flush_all(&pr->lro_mgr);
749
750 pr->rx_packets += processed;
751
752 ehea_refill_rq1(pr, last_wqe_index, processed_rq1);
753 ehea_refill_rq2(pr, processed_rq2);
754 ehea_refill_rq3(pr, processed_rq3);
755
756 return processed;
757 }
758
759 static struct ehea_cqe *ehea_proc_cqes(struct ehea_port_res *pr, int my_quota)
760 {
761 struct sk_buff *skb;
762 struct ehea_cq *send_cq = pr->send_cq;
763 struct ehea_cqe *cqe;
764 int quota = my_quota;
765 int cqe_counter = 0;
766 int swqe_av = 0;
767 int index;
768 unsigned long flags;
769
770 cqe = ehea_poll_cq(send_cq);
771 while (cqe && (quota > 0)) {
772 ehea_inc_cq(send_cq);
773
774 cqe_counter++;
775 rmb();
776 if (cqe->status & EHEA_CQE_STAT_ERR_MASK) {
777 ehea_error("Send Completion Error: Resetting port");
778 if (netif_msg_tx_err(pr->port))
779 ehea_dump(cqe, sizeof(*cqe), "Send CQE");
780 ehea_schedule_port_reset(pr->port);
781 break;
782 }
783
784 if (netif_msg_tx_done(pr->port))
785 ehea_dump(cqe, sizeof(*cqe), "CQE");
786
787 if (likely(EHEA_BMASK_GET(EHEA_WR_ID_TYPE, cqe->wr_id)
788 == EHEA_SWQE2_TYPE)) {
789
790 index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, cqe->wr_id);
791 skb = pr->sq_skba.arr[index];
792 dev_kfree_skb(skb);
793 pr->sq_skba.arr[index] = NULL;
794 }
795
796 swqe_av += EHEA_BMASK_GET(EHEA_WR_ID_REFILL, cqe->wr_id);
797 quota--;
798
799 cqe = ehea_poll_cq(send_cq);
800 };
801
802 ehea_update_feca(send_cq, cqe_counter);
803 atomic_add(swqe_av, &pr->swqe_avail);
804
805 spin_lock_irqsave(&pr->netif_queue, flags);
806
807 if (pr->queue_stopped && (atomic_read(&pr->swqe_avail)
808 >= pr->swqe_refill_th)) {
809 netif_wake_queue(pr->port->netdev);
810 pr->queue_stopped = 0;
811 }
812 spin_unlock_irqrestore(&pr->netif_queue, flags);
813
814 return cqe;
815 }
816
817 #define EHEA_NAPI_POLL_NUM_BEFORE_IRQ 16
818 #define EHEA_POLL_MAX_CQES 65535
819
820 static int ehea_poll(struct napi_struct *napi, int budget)
821 {
822 struct ehea_port_res *pr = container_of(napi, struct ehea_port_res,
823 napi);
824 struct net_device *dev = pr->port->netdev;
825 struct ehea_cqe *cqe;
826 struct ehea_cqe *cqe_skb = NULL;
827 int force_irq, wqe_index;
828 int rx = 0;
829
830 force_irq = (pr->poll_counter > EHEA_NAPI_POLL_NUM_BEFORE_IRQ);
831 cqe_skb = ehea_proc_cqes(pr, EHEA_POLL_MAX_CQES);
832
833 if (!force_irq)
834 rx += ehea_proc_rwqes(dev, pr, budget - rx);
835
836 while ((rx != budget) || force_irq) {
837 pr->poll_counter = 0;
838 force_irq = 0;
839 netif_rx_complete(dev, napi);
840 ehea_reset_cq_ep(pr->recv_cq);
841 ehea_reset_cq_ep(pr->send_cq);
842 ehea_reset_cq_n1(pr->recv_cq);
843 ehea_reset_cq_n1(pr->send_cq);
844 cqe = ehea_poll_rq1(pr->qp, &wqe_index);
845 cqe_skb = ehea_poll_cq(pr->send_cq);
846
847 if (!cqe && !cqe_skb)
848 return rx;
849
850 if (!netif_rx_reschedule(dev, napi))
851 return rx;
852
853 cqe_skb = ehea_proc_cqes(pr, EHEA_POLL_MAX_CQES);
854 rx += ehea_proc_rwqes(dev, pr, budget - rx);
855 }
856
857 pr->poll_counter++;
858 return rx;
859 }
860
861 #ifdef CONFIG_NET_POLL_CONTROLLER
862 static void ehea_netpoll(struct net_device *dev)
863 {
864 struct ehea_port *port = netdev_priv(dev);
865 int i;
866
867 for (i = 0; i < port->num_def_qps; i++)
868 netif_rx_schedule(dev, &port->port_res[i].napi);
869 }
870 #endif
871
872 static irqreturn_t ehea_recv_irq_handler(int irq, void *param)
873 {
874 struct ehea_port_res *pr = param;
875
876 netif_rx_schedule(pr->port->netdev, &pr->napi);
877
878 return IRQ_HANDLED;
879 }
880
881 static irqreturn_t ehea_qp_aff_irq_handler(int irq, void *param)
882 {
883 struct ehea_port *port = param;
884 struct ehea_eqe *eqe;
885 struct ehea_qp *qp;
886 u32 qp_token;
887
888 eqe = ehea_poll_eq(port->qp_eq);
889
890 while (eqe) {
891 qp_token = EHEA_BMASK_GET(EHEA_EQE_QP_TOKEN, eqe->entry);
892 ehea_error("QP aff_err: entry=0x%lx, token=0x%x",
893 eqe->entry, qp_token);
894
895 qp = port->port_res[qp_token].qp;
896 ehea_error_data(port->adapter, qp->fw_handle);
897 eqe = ehea_poll_eq(port->qp_eq);
898 }
899
900 ehea_schedule_port_reset(port);
901
902 return IRQ_HANDLED;
903 }
904
905 static struct ehea_port *ehea_get_port(struct ehea_adapter *adapter,
906 int logical_port)
907 {
908 int i;
909
910 for (i = 0; i < EHEA_MAX_PORTS; i++)
911 if (adapter->port[i])
912 if (adapter->port[i]->logical_port_id == logical_port)
913 return adapter->port[i];
914 return NULL;
915 }
916
917 int ehea_sense_port_attr(struct ehea_port *port)
918 {
919 int ret;
920 u64 hret;
921 struct hcp_ehea_port_cb0 *cb0;
922
923 /* may be called via ehea_neq_tasklet() */
924 cb0 = kzalloc(PAGE_SIZE, GFP_ATOMIC);
925 if (!cb0) {
926 ehea_error("no mem for cb0");
927 ret = -ENOMEM;
928 goto out;
929 }
930
931 hret = ehea_h_query_ehea_port(port->adapter->handle,
932 port->logical_port_id, H_PORT_CB0,
933 EHEA_BMASK_SET(H_PORT_CB0_ALL, 0xFFFF),
934 cb0);
935 if (hret != H_SUCCESS) {
936 ret = -EIO;
937 goto out_free;
938 }
939
940 /* MAC address */
941 port->mac_addr = cb0->port_mac_addr << 16;
942
943 if (!is_valid_ether_addr((u8 *)&port->mac_addr)) {
944 ret = -EADDRNOTAVAIL;
945 goto out_free;
946 }
947
948 /* Port speed */
949 switch (cb0->port_speed) {
950 case H_SPEED_10M_H:
951 port->port_speed = EHEA_SPEED_10M;
952 port->full_duplex = 0;
953 break;
954 case H_SPEED_10M_F:
955 port->port_speed = EHEA_SPEED_10M;
956 port->full_duplex = 1;
957 break;
958 case H_SPEED_100M_H:
959 port->port_speed = EHEA_SPEED_100M;
960 port->full_duplex = 0;
961 break;
962 case H_SPEED_100M_F:
963 port->port_speed = EHEA_SPEED_100M;
964 port->full_duplex = 1;
965 break;
966 case H_SPEED_1G_F:
967 port->port_speed = EHEA_SPEED_1G;
968 port->full_duplex = 1;
969 break;
970 case H_SPEED_10G_F:
971 port->port_speed = EHEA_SPEED_10G;
972 port->full_duplex = 1;
973 break;
974 default:
975 port->port_speed = 0;
976 port->full_duplex = 0;
977 break;
978 }
979
980 port->autoneg = 1;
981 port->num_mcs = cb0->num_default_qps;
982
983 /* Number of default QPs */
984 if (use_mcs)
985 port->num_def_qps = cb0->num_default_qps;
986 else
987 port->num_def_qps = 1;
988
989 if (!port->num_def_qps) {
990 ret = -EINVAL;
991 goto out_free;
992 }
993
994 port->num_tx_qps = num_tx_qps;
995
996 if (port->num_def_qps >= port->num_tx_qps)
997 port->num_add_tx_qps = 0;
998 else
999 port->num_add_tx_qps = port->num_tx_qps - port->num_def_qps;
1000
1001 ret = 0;
1002 out_free:
1003 if (ret || netif_msg_probe(port))
1004 ehea_dump(cb0, sizeof(*cb0), "ehea_sense_port_attr");
1005 kfree(cb0);
1006 out:
1007 return ret;
1008 }
1009
1010 int ehea_set_portspeed(struct ehea_port *port, u32 port_speed)
1011 {
1012 struct hcp_ehea_port_cb4 *cb4;
1013 u64 hret;
1014 int ret = 0;
1015
1016 cb4 = kzalloc(PAGE_SIZE, GFP_KERNEL);
1017 if (!cb4) {
1018 ehea_error("no mem for cb4");
1019 ret = -ENOMEM;
1020 goto out;
1021 }
1022
1023 cb4->port_speed = port_speed;
1024
1025 netif_carrier_off(port->netdev);
1026
1027 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1028 port->logical_port_id,
1029 H_PORT_CB4, H_PORT_CB4_SPEED, cb4);
1030 if (hret == H_SUCCESS) {
1031 port->autoneg = port_speed == EHEA_SPEED_AUTONEG ? 1 : 0;
1032
1033 hret = ehea_h_query_ehea_port(port->adapter->handle,
1034 port->logical_port_id,
1035 H_PORT_CB4, H_PORT_CB4_SPEED,
1036 cb4);
1037 if (hret == H_SUCCESS) {
1038 switch (cb4->port_speed) {
1039 case H_SPEED_10M_H:
1040 port->port_speed = EHEA_SPEED_10M;
1041 port->full_duplex = 0;
1042 break;
1043 case H_SPEED_10M_F:
1044 port->port_speed = EHEA_SPEED_10M;
1045 port->full_duplex = 1;
1046 break;
1047 case H_SPEED_100M_H:
1048 port->port_speed = EHEA_SPEED_100M;
1049 port->full_duplex = 0;
1050 break;
1051 case H_SPEED_100M_F:
1052 port->port_speed = EHEA_SPEED_100M;
1053 port->full_duplex = 1;
1054 break;
1055 case H_SPEED_1G_F:
1056 port->port_speed = EHEA_SPEED_1G;
1057 port->full_duplex = 1;
1058 break;
1059 case H_SPEED_10G_F:
1060 port->port_speed = EHEA_SPEED_10G;
1061 port->full_duplex = 1;
1062 break;
1063 default:
1064 port->port_speed = 0;
1065 port->full_duplex = 0;
1066 break;
1067 }
1068 } else {
1069 ehea_error("Failed sensing port speed");
1070 ret = -EIO;
1071 }
1072 } else {
1073 if (hret == H_AUTHORITY) {
1074 ehea_info("Hypervisor denied setting port speed");
1075 ret = -EPERM;
1076 } else {
1077 ret = -EIO;
1078 ehea_error("Failed setting port speed");
1079 }
1080 }
1081 if (!prop_carrier_state || (port->phy_link == EHEA_PHY_LINK_UP))
1082 netif_carrier_on(port->netdev);
1083
1084 kfree(cb4);
1085 out:
1086 return ret;
1087 }
1088
1089 static void ehea_parse_eqe(struct ehea_adapter *adapter, u64 eqe)
1090 {
1091 int ret;
1092 u8 ec;
1093 u8 portnum;
1094 struct ehea_port *port;
1095
1096 ec = EHEA_BMASK_GET(NEQE_EVENT_CODE, eqe);
1097 portnum = EHEA_BMASK_GET(NEQE_PORTNUM, eqe);
1098 port = ehea_get_port(adapter, portnum);
1099
1100 switch (ec) {
1101 case EHEA_EC_PORTSTATE_CHG: /* port state change */
1102
1103 if (!port) {
1104 ehea_error("unknown portnum %x", portnum);
1105 break;
1106 }
1107
1108 if (EHEA_BMASK_GET(NEQE_PORT_UP, eqe)) {
1109 if (!netif_carrier_ok(port->netdev)) {
1110 ret = ehea_sense_port_attr(port);
1111 if (ret) {
1112 ehea_error("failed resensing port "
1113 "attributes");
1114 break;
1115 }
1116
1117 if (netif_msg_link(port))
1118 ehea_info("%s: Logical port up: %dMbps "
1119 "%s Duplex",
1120 port->netdev->name,
1121 port->port_speed,
1122 port->full_duplex ==
1123 1 ? "Full" : "Half");
1124
1125 netif_carrier_on(port->netdev);
1126 netif_wake_queue(port->netdev);
1127 }
1128 } else
1129 if (netif_carrier_ok(port->netdev)) {
1130 if (netif_msg_link(port))
1131 ehea_info("%s: Logical port down",
1132 port->netdev->name);
1133 netif_carrier_off(port->netdev);
1134 netif_stop_queue(port->netdev);
1135 }
1136
1137 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PORT_UP, eqe)) {
1138 port->phy_link = EHEA_PHY_LINK_UP;
1139 if (netif_msg_link(port))
1140 ehea_info("%s: Physical port up",
1141 port->netdev->name);
1142 if (prop_carrier_state)
1143 netif_carrier_on(port->netdev);
1144 } else {
1145 port->phy_link = EHEA_PHY_LINK_DOWN;
1146 if (netif_msg_link(port))
1147 ehea_info("%s: Physical port down",
1148 port->netdev->name);
1149 if (prop_carrier_state)
1150 netif_carrier_off(port->netdev);
1151 }
1152
1153 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PRIMARY, eqe))
1154 ehea_info("External switch port is primary port");
1155 else
1156 ehea_info("External switch port is backup port");
1157
1158 break;
1159 case EHEA_EC_ADAPTER_MALFUNC:
1160 ehea_error("Adapter malfunction");
1161 break;
1162 case EHEA_EC_PORT_MALFUNC:
1163 ehea_info("Port malfunction: Device: %s", port->netdev->name);
1164 netif_carrier_off(port->netdev);
1165 netif_stop_queue(port->netdev);
1166 break;
1167 default:
1168 ehea_error("unknown event code %x, eqe=0x%lX", ec, eqe);
1169 break;
1170 }
1171 }
1172
1173 static void ehea_neq_tasklet(unsigned long data)
1174 {
1175 struct ehea_adapter *adapter = (struct ehea_adapter *)data;
1176 struct ehea_eqe *eqe;
1177 u64 event_mask;
1178
1179 eqe = ehea_poll_eq(adapter->neq);
1180 ehea_debug("eqe=%p", eqe);
1181
1182 while (eqe) {
1183 ehea_debug("*eqe=%lx", eqe->entry);
1184 ehea_parse_eqe(adapter, eqe->entry);
1185 eqe = ehea_poll_eq(adapter->neq);
1186 ehea_debug("next eqe=%p", eqe);
1187 }
1188
1189 event_mask = EHEA_BMASK_SET(NELR_PORTSTATE_CHG, 1)
1190 | EHEA_BMASK_SET(NELR_ADAPTER_MALFUNC, 1)
1191 | EHEA_BMASK_SET(NELR_PORT_MALFUNC, 1);
1192
1193 ehea_h_reset_events(adapter->handle,
1194 adapter->neq->fw_handle, event_mask);
1195 }
1196
1197 static irqreturn_t ehea_interrupt_neq(int irq, void *param)
1198 {
1199 struct ehea_adapter *adapter = param;
1200 tasklet_hi_schedule(&adapter->neq_tasklet);
1201 return IRQ_HANDLED;
1202 }
1203
1204
1205 static int ehea_fill_port_res(struct ehea_port_res *pr)
1206 {
1207 int ret;
1208 struct ehea_qp_init_attr *init_attr = &pr->qp->init_attr;
1209
1210 ret = ehea_init_fill_rq1(pr, init_attr->act_nr_rwqes_rq1
1211 - init_attr->act_nr_rwqes_rq2
1212 - init_attr->act_nr_rwqes_rq3 - 1);
1213
1214 ret |= ehea_refill_rq2(pr, init_attr->act_nr_rwqes_rq2 - 1);
1215
1216 ret |= ehea_refill_rq3(pr, init_attr->act_nr_rwqes_rq3 - 1);
1217
1218 return ret;
1219 }
1220
1221 static int ehea_reg_interrupts(struct net_device *dev)
1222 {
1223 struct ehea_port *port = netdev_priv(dev);
1224 struct ehea_port_res *pr;
1225 int i, ret;
1226
1227
1228 snprintf(port->int_aff_name, EHEA_IRQ_NAME_SIZE - 1, "%s-aff",
1229 dev->name);
1230
1231 ret = ibmebus_request_irq(port->qp_eq->attr.ist1,
1232 ehea_qp_aff_irq_handler,
1233 IRQF_DISABLED, port->int_aff_name, port);
1234 if (ret) {
1235 ehea_error("failed registering irq for qp_aff_irq_handler:"
1236 "ist=%X", port->qp_eq->attr.ist1);
1237 goto out_free_qpeq;
1238 }
1239
1240 if (netif_msg_ifup(port))
1241 ehea_info("irq_handle 0x%X for function qp_aff_irq_handler "
1242 "registered", port->qp_eq->attr.ist1);
1243
1244
1245 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
1246 pr = &port->port_res[i];
1247 snprintf(pr->int_send_name, EHEA_IRQ_NAME_SIZE - 1,
1248 "%s-queue%d", dev->name, i);
1249 ret = ibmebus_request_irq(pr->eq->attr.ist1,
1250 ehea_recv_irq_handler,
1251 IRQF_DISABLED, pr->int_send_name,
1252 pr);
1253 if (ret) {
1254 ehea_error("failed registering irq for ehea_queue "
1255 "port_res_nr:%d, ist=%X", i,
1256 pr->eq->attr.ist1);
1257 goto out_free_req;
1258 }
1259 if (netif_msg_ifup(port))
1260 ehea_info("irq_handle 0x%X for function ehea_queue_int "
1261 "%d registered", pr->eq->attr.ist1, i);
1262 }
1263 out:
1264 return ret;
1265
1266
1267 out_free_req:
1268 while (--i >= 0) {
1269 u32 ist = port->port_res[i].eq->attr.ist1;
1270 ibmebus_free_irq(ist, &port->port_res[i]);
1271 }
1272
1273 out_free_qpeq:
1274 ibmebus_free_irq(port->qp_eq->attr.ist1, port);
1275 i = port->num_def_qps;
1276
1277 goto out;
1278
1279 }
1280
1281 static void ehea_free_interrupts(struct net_device *dev)
1282 {
1283 struct ehea_port *port = netdev_priv(dev);
1284 struct ehea_port_res *pr;
1285 int i;
1286
1287 /* send */
1288
1289 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
1290 pr = &port->port_res[i];
1291 ibmebus_free_irq(pr->eq->attr.ist1, pr);
1292 if (netif_msg_intr(port))
1293 ehea_info("free send irq for res %d with handle 0x%X",
1294 i, pr->eq->attr.ist1);
1295 }
1296
1297 /* associated events */
1298 ibmebus_free_irq(port->qp_eq->attr.ist1, port);
1299 if (netif_msg_intr(port))
1300 ehea_info("associated event interrupt for handle 0x%X freed",
1301 port->qp_eq->attr.ist1);
1302 }
1303
1304 static int ehea_configure_port(struct ehea_port *port)
1305 {
1306 int ret, i;
1307 u64 hret, mask;
1308 struct hcp_ehea_port_cb0 *cb0;
1309
1310 ret = -ENOMEM;
1311 cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL);
1312 if (!cb0)
1313 goto out;
1314
1315 cb0->port_rc = EHEA_BMASK_SET(PXLY_RC_VALID, 1)
1316 | EHEA_BMASK_SET(PXLY_RC_IP_CHKSUM, 1)
1317 | EHEA_BMASK_SET(PXLY_RC_TCP_UDP_CHKSUM, 1)
1318 | EHEA_BMASK_SET(PXLY_RC_VLAN_XTRACT, 1)
1319 | EHEA_BMASK_SET(PXLY_RC_VLAN_TAG_FILTER,
1320 PXLY_RC_VLAN_FILTER)
1321 | EHEA_BMASK_SET(PXLY_RC_JUMBO_FRAME, 1);
1322
1323 for (i = 0; i < port->num_mcs; i++)
1324 if (use_mcs)
1325 cb0->default_qpn_arr[i] =
1326 port->port_res[i].qp->init_attr.qp_nr;
1327 else
1328 cb0->default_qpn_arr[i] =
1329 port->port_res[0].qp->init_attr.qp_nr;
1330
1331 if (netif_msg_ifup(port))
1332 ehea_dump(cb0, sizeof(*cb0), "ehea_configure_port");
1333
1334 mask = EHEA_BMASK_SET(H_PORT_CB0_PRC, 1)
1335 | EHEA_BMASK_SET(H_PORT_CB0_DEFQPNARRAY, 1);
1336
1337 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1338 port->logical_port_id,
1339 H_PORT_CB0, mask, cb0);
1340 ret = -EIO;
1341 if (hret != H_SUCCESS)
1342 goto out_free;
1343
1344 ret = 0;
1345
1346 out_free:
1347 kfree(cb0);
1348 out:
1349 return ret;
1350 }
1351
1352 int ehea_gen_smrs(struct ehea_port_res *pr)
1353 {
1354 int ret;
1355 struct ehea_adapter *adapter = pr->port->adapter;
1356
1357 ret = ehea_gen_smr(adapter, &adapter->mr, &pr->send_mr);
1358 if (ret)
1359 goto out;
1360
1361 ret = ehea_gen_smr(adapter, &adapter->mr, &pr->recv_mr);
1362 if (ret)
1363 goto out_free;
1364
1365 return 0;
1366
1367 out_free:
1368 ehea_rem_mr(&pr->send_mr);
1369 out:
1370 ehea_error("Generating SMRS failed\n");
1371 return -EIO;
1372 }
1373
1374 int ehea_rem_smrs(struct ehea_port_res *pr)
1375 {
1376 if ((ehea_rem_mr(&pr->send_mr))
1377 || (ehea_rem_mr(&pr->recv_mr)))
1378 return -EIO;
1379 else
1380 return 0;
1381 }
1382
1383 static int ehea_init_q_skba(struct ehea_q_skb_arr *q_skba, int max_q_entries)
1384 {
1385 int arr_size = sizeof(void *) * max_q_entries;
1386
1387 q_skba->arr = vmalloc(arr_size);
1388 if (!q_skba->arr)
1389 return -ENOMEM;
1390
1391 memset(q_skba->arr, 0, arr_size);
1392
1393 q_skba->len = max_q_entries;
1394 q_skba->index = 0;
1395 q_skba->os_skbs = 0;
1396
1397 return 0;
1398 }
1399
1400 static int ehea_init_port_res(struct ehea_port *port, struct ehea_port_res *pr,
1401 struct port_res_cfg *pr_cfg, int queue_token)
1402 {
1403 struct ehea_adapter *adapter = port->adapter;
1404 enum ehea_eq_type eq_type = EHEA_EQ;
1405 struct ehea_qp_init_attr *init_attr = NULL;
1406 int ret = -EIO;
1407
1408 memset(pr, 0, sizeof(struct ehea_port_res));
1409
1410 pr->port = port;
1411 spin_lock_init(&pr->xmit_lock);
1412 spin_lock_init(&pr->netif_queue);
1413
1414 pr->eq = ehea_create_eq(adapter, eq_type, EHEA_MAX_ENTRIES_EQ, 0);
1415 if (!pr->eq) {
1416 ehea_error("create_eq failed (eq)");
1417 goto out_free;
1418 }
1419
1420 pr->recv_cq = ehea_create_cq(adapter, pr_cfg->max_entries_rcq,
1421 pr->eq->fw_handle,
1422 port->logical_port_id);
1423 if (!pr->recv_cq) {
1424 ehea_error("create_cq failed (cq_recv)");
1425 goto out_free;
1426 }
1427
1428 pr->send_cq = ehea_create_cq(adapter, pr_cfg->max_entries_scq,
1429 pr->eq->fw_handle,
1430 port->logical_port_id);
1431 if (!pr->send_cq) {
1432 ehea_error("create_cq failed (cq_send)");
1433 goto out_free;
1434 }
1435
1436 if (netif_msg_ifup(port))
1437 ehea_info("Send CQ: act_nr_cqes=%d, Recv CQ: act_nr_cqes=%d",
1438 pr->send_cq->attr.act_nr_of_cqes,
1439 pr->recv_cq->attr.act_nr_of_cqes);
1440
1441 init_attr = kzalloc(sizeof(*init_attr), GFP_KERNEL);
1442 if (!init_attr) {
1443 ret = -ENOMEM;
1444 ehea_error("no mem for ehea_qp_init_attr");
1445 goto out_free;
1446 }
1447
1448 init_attr->low_lat_rq1 = 1;
1449 init_attr->signalingtype = 1; /* generate CQE if specified in WQE */
1450 init_attr->rq_count = 3;
1451 init_attr->qp_token = queue_token;
1452 init_attr->max_nr_send_wqes = pr_cfg->max_entries_sq;
1453 init_attr->max_nr_rwqes_rq1 = pr_cfg->max_entries_rq1;
1454 init_attr->max_nr_rwqes_rq2 = pr_cfg->max_entries_rq2;
1455 init_attr->max_nr_rwqes_rq3 = pr_cfg->max_entries_rq3;
1456 init_attr->wqe_size_enc_sq = EHEA_SG_SQ;
1457 init_attr->wqe_size_enc_rq1 = EHEA_SG_RQ1;
1458 init_attr->wqe_size_enc_rq2 = EHEA_SG_RQ2;
1459 init_attr->wqe_size_enc_rq3 = EHEA_SG_RQ3;
1460 init_attr->rq2_threshold = EHEA_RQ2_THRESHOLD;
1461 init_attr->rq3_threshold = EHEA_RQ3_THRESHOLD;
1462 init_attr->port_nr = port->logical_port_id;
1463 init_attr->send_cq_handle = pr->send_cq->fw_handle;
1464 init_attr->recv_cq_handle = pr->recv_cq->fw_handle;
1465 init_attr->aff_eq_handle = port->qp_eq->fw_handle;
1466
1467 pr->qp = ehea_create_qp(adapter, adapter->pd, init_attr);
1468 if (!pr->qp) {
1469 ehea_error("create_qp failed");
1470 ret = -EIO;
1471 goto out_free;
1472 }
1473
1474 if (netif_msg_ifup(port))
1475 ehea_info("QP: qp_nr=%d\n act_nr_snd_wqe=%d\n nr_rwqe_rq1=%d\n "
1476 "nr_rwqe_rq2=%d\n nr_rwqe_rq3=%d", init_attr->qp_nr,
1477 init_attr->act_nr_send_wqes,
1478 init_attr->act_nr_rwqes_rq1,
1479 init_attr->act_nr_rwqes_rq2,
1480 init_attr->act_nr_rwqes_rq3);
1481
1482 pr->sq_skba_size = init_attr->act_nr_send_wqes + 1;
1483
1484 ret = ehea_init_q_skba(&pr->sq_skba, pr->sq_skba_size);
1485 ret |= ehea_init_q_skba(&pr->rq1_skba, init_attr->act_nr_rwqes_rq1 + 1);
1486 ret |= ehea_init_q_skba(&pr->rq2_skba, init_attr->act_nr_rwqes_rq2 + 1);
1487 ret |= ehea_init_q_skba(&pr->rq3_skba, init_attr->act_nr_rwqes_rq3 + 1);
1488 if (ret)
1489 goto out_free;
1490
1491 pr->swqe_refill_th = init_attr->act_nr_send_wqes / 10;
1492 if (ehea_gen_smrs(pr) != 0) {
1493 ret = -EIO;
1494 goto out_free;
1495 }
1496
1497 atomic_set(&pr->swqe_avail, init_attr->act_nr_send_wqes - 1);
1498
1499 kfree(init_attr);
1500
1501 netif_napi_add(pr->port->netdev, &pr->napi, ehea_poll, 64);
1502
1503 pr->lro_mgr.max_aggr = pr->port->lro_max_aggr;
1504 pr->lro_mgr.max_desc = MAX_LRO_DESCRIPTORS;
1505 pr->lro_mgr.lro_arr = pr->lro_desc;
1506 pr->lro_mgr.get_skb_header = get_skb_hdr;
1507 pr->lro_mgr.features = LRO_F_NAPI | LRO_F_EXTRACT_VLAN_ID;
1508 pr->lro_mgr.dev = port->netdev;
1509 pr->lro_mgr.ip_summed = CHECKSUM_UNNECESSARY;
1510 pr->lro_mgr.ip_summed_aggr = CHECKSUM_UNNECESSARY;
1511
1512 ret = 0;
1513 goto out;
1514
1515 out_free:
1516 kfree(init_attr);
1517 vfree(pr->sq_skba.arr);
1518 vfree(pr->rq1_skba.arr);
1519 vfree(pr->rq2_skba.arr);
1520 vfree(pr->rq3_skba.arr);
1521 ehea_destroy_qp(pr->qp);
1522 ehea_destroy_cq(pr->send_cq);
1523 ehea_destroy_cq(pr->recv_cq);
1524 ehea_destroy_eq(pr->eq);
1525 out:
1526 return ret;
1527 }
1528
1529 static int ehea_clean_portres(struct ehea_port *port, struct ehea_port_res *pr)
1530 {
1531 int ret, i;
1532
1533 if (pr->qp)
1534 netif_napi_del(&pr->napi);
1535
1536 ret = ehea_destroy_qp(pr->qp);
1537
1538 if (!ret) {
1539 ehea_destroy_cq(pr->send_cq);
1540 ehea_destroy_cq(pr->recv_cq);
1541 ehea_destroy_eq(pr->eq);
1542
1543 for (i = 0; i < pr->rq1_skba.len; i++)
1544 if (pr->rq1_skba.arr[i])
1545 dev_kfree_skb(pr->rq1_skba.arr[i]);
1546
1547 for (i = 0; i < pr->rq2_skba.len; i++)
1548 if (pr->rq2_skba.arr[i])
1549 dev_kfree_skb(pr->rq2_skba.arr[i]);
1550
1551 for (i = 0; i < pr->rq3_skba.len; i++)
1552 if (pr->rq3_skba.arr[i])
1553 dev_kfree_skb(pr->rq3_skba.arr[i]);
1554
1555 for (i = 0; i < pr->sq_skba.len; i++)
1556 if (pr->sq_skba.arr[i])
1557 dev_kfree_skb(pr->sq_skba.arr[i]);
1558
1559 vfree(pr->rq1_skba.arr);
1560 vfree(pr->rq2_skba.arr);
1561 vfree(pr->rq3_skba.arr);
1562 vfree(pr->sq_skba.arr);
1563 ret = ehea_rem_smrs(pr);
1564 }
1565 return ret;
1566 }
1567
1568 /*
1569 * The write_* functions store information in swqe which is used by
1570 * the hardware to calculate the ip/tcp/udp checksum
1571 */
1572
1573 static inline void write_ip_start_end(struct ehea_swqe *swqe,
1574 const struct sk_buff *skb)
1575 {
1576 swqe->ip_start = skb_network_offset(skb);
1577 swqe->ip_end = (u8)(swqe->ip_start + ip_hdrlen(skb) - 1);
1578 }
1579
1580 static inline void write_tcp_offset_end(struct ehea_swqe *swqe,
1581 const struct sk_buff *skb)
1582 {
1583 swqe->tcp_offset =
1584 (u8)(swqe->ip_end + 1 + offsetof(struct tcphdr, check));
1585
1586 swqe->tcp_end = (u16)skb->len - 1;
1587 }
1588
1589 static inline void write_udp_offset_end(struct ehea_swqe *swqe,
1590 const struct sk_buff *skb)
1591 {
1592 swqe->tcp_offset =
1593 (u8)(swqe->ip_end + 1 + offsetof(struct udphdr, check));
1594
1595 swqe->tcp_end = (u16)skb->len - 1;
1596 }
1597
1598
1599 static void write_swqe2_TSO(struct sk_buff *skb,
1600 struct ehea_swqe *swqe, u32 lkey)
1601 {
1602 struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry;
1603 u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0];
1604 int skb_data_size = skb->len - skb->data_len;
1605 int headersize;
1606
1607 /* Packet is TCP with TSO enabled */
1608 swqe->tx_control |= EHEA_SWQE_TSO;
1609 swqe->mss = skb_shinfo(skb)->gso_size;
1610 /* copy only eth/ip/tcp headers to immediate data and
1611 * the rest of skb->data to sg1entry
1612 */
1613 headersize = ETH_HLEN + ip_hdrlen(skb) + tcp_hdrlen(skb);
1614
1615 skb_data_size = skb->len - skb->data_len;
1616
1617 if (skb_data_size >= headersize) {
1618 /* copy immediate data */
1619 skb_copy_from_linear_data(skb, imm_data, headersize);
1620 swqe->immediate_data_length = headersize;
1621
1622 if (skb_data_size > headersize) {
1623 /* set sg1entry data */
1624 sg1entry->l_key = lkey;
1625 sg1entry->len = skb_data_size - headersize;
1626 sg1entry->vaddr =
1627 ehea_map_vaddr(skb->data + headersize);
1628 swqe->descriptors++;
1629 }
1630 } else
1631 ehea_error("cannot handle fragmented headers");
1632 }
1633
1634 static void write_swqe2_nonTSO(struct sk_buff *skb,
1635 struct ehea_swqe *swqe, u32 lkey)
1636 {
1637 int skb_data_size = skb->len - skb->data_len;
1638 u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0];
1639 struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry;
1640
1641 /* Packet is any nonTSO type
1642 *
1643 * Copy as much as possible skb->data to immediate data and
1644 * the rest to sg1entry
1645 */
1646 if (skb_data_size >= SWQE2_MAX_IMM) {
1647 /* copy immediate data */
1648 skb_copy_from_linear_data(skb, imm_data, SWQE2_MAX_IMM);
1649
1650 swqe->immediate_data_length = SWQE2_MAX_IMM;
1651
1652 if (skb_data_size > SWQE2_MAX_IMM) {
1653 /* copy sg1entry data */
1654 sg1entry->l_key = lkey;
1655 sg1entry->len = skb_data_size - SWQE2_MAX_IMM;
1656 sg1entry->vaddr =
1657 ehea_map_vaddr(skb->data + SWQE2_MAX_IMM);
1658 swqe->descriptors++;
1659 }
1660 } else {
1661 skb_copy_from_linear_data(skb, imm_data, skb_data_size);
1662 swqe->immediate_data_length = skb_data_size;
1663 }
1664 }
1665
1666 static inline void write_swqe2_data(struct sk_buff *skb, struct net_device *dev,
1667 struct ehea_swqe *swqe, u32 lkey)
1668 {
1669 struct ehea_vsgentry *sg_list, *sg1entry, *sgentry;
1670 skb_frag_t *frag;
1671 int nfrags, sg1entry_contains_frag_data, i;
1672
1673 nfrags = skb_shinfo(skb)->nr_frags;
1674 sg1entry = &swqe->u.immdata_desc.sg_entry;
1675 sg_list = (struct ehea_vsgentry *)&swqe->u.immdata_desc.sg_list;
1676 swqe->descriptors = 0;
1677 sg1entry_contains_frag_data = 0;
1678
1679 if ((dev->features & NETIF_F_TSO) && skb_shinfo(skb)->gso_size)
1680 write_swqe2_TSO(skb, swqe, lkey);
1681 else
1682 write_swqe2_nonTSO(skb, swqe, lkey);
1683
1684 /* write descriptors */
1685 if (nfrags > 0) {
1686 if (swqe->descriptors == 0) {
1687 /* sg1entry not yet used */
1688 frag = &skb_shinfo(skb)->frags[0];
1689
1690 /* copy sg1entry data */
1691 sg1entry->l_key = lkey;
1692 sg1entry->len = frag->size;
1693 sg1entry->vaddr =
1694 ehea_map_vaddr(page_address(frag->page)
1695 + frag->page_offset);
1696 swqe->descriptors++;
1697 sg1entry_contains_frag_data = 1;
1698 }
1699
1700 for (i = sg1entry_contains_frag_data; i < nfrags; i++) {
1701
1702 frag = &skb_shinfo(skb)->frags[i];
1703 sgentry = &sg_list[i - sg1entry_contains_frag_data];
1704
1705 sgentry->l_key = lkey;
1706 sgentry->len = frag->size;
1707 sgentry->vaddr =
1708 ehea_map_vaddr(page_address(frag->page)
1709 + frag->page_offset);
1710 swqe->descriptors++;
1711 }
1712 }
1713 }
1714
1715 static int ehea_broadcast_reg_helper(struct ehea_port *port, u32 hcallid)
1716 {
1717 int ret = 0;
1718 u64 hret;
1719 u8 reg_type;
1720
1721 /* De/Register untagged packets */
1722 reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_UNTAGGED;
1723 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1724 port->logical_port_id,
1725 reg_type, port->mac_addr, 0, hcallid);
1726 if (hret != H_SUCCESS) {
1727 ehea_error("%sregistering bc address failed (tagged)",
1728 hcallid == H_REG_BCMC ? "" : "de");
1729 ret = -EIO;
1730 goto out_herr;
1731 }
1732
1733 /* De/Register VLAN packets */
1734 reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_VLANID_ALL;
1735 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1736 port->logical_port_id,
1737 reg_type, port->mac_addr, 0, hcallid);
1738 if (hret != H_SUCCESS) {
1739 ehea_error("%sregistering bc address failed (vlan)",
1740 hcallid == H_REG_BCMC ? "" : "de");
1741 ret = -EIO;
1742 }
1743 out_herr:
1744 return ret;
1745 }
1746
1747 static int ehea_set_mac_addr(struct net_device *dev, void *sa)
1748 {
1749 struct ehea_port *port = netdev_priv(dev);
1750 struct sockaddr *mac_addr = sa;
1751 struct hcp_ehea_port_cb0 *cb0;
1752 int ret;
1753 u64 hret;
1754
1755 if (!is_valid_ether_addr(mac_addr->sa_data)) {
1756 ret = -EADDRNOTAVAIL;
1757 goto out;
1758 }
1759
1760 cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL);
1761 if (!cb0) {
1762 ehea_error("no mem for cb0");
1763 ret = -ENOMEM;
1764 goto out;
1765 }
1766
1767 memcpy(&(cb0->port_mac_addr), &(mac_addr->sa_data[0]), ETH_ALEN);
1768
1769 cb0->port_mac_addr = cb0->port_mac_addr >> 16;
1770
1771 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1772 port->logical_port_id, H_PORT_CB0,
1773 EHEA_BMASK_SET(H_PORT_CB0_MAC, 1), cb0);
1774 if (hret != H_SUCCESS) {
1775 ret = -EIO;
1776 goto out_free;
1777 }
1778
1779 memcpy(dev->dev_addr, mac_addr->sa_data, dev->addr_len);
1780
1781 spin_lock(&ehea_bcmc_regs.lock);
1782
1783 /* Deregister old MAC in pHYP */
1784 if (port->state == EHEA_PORT_UP) {
1785 ret = ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
1786 if (ret)
1787 goto out_upregs;
1788 }
1789
1790 port->mac_addr = cb0->port_mac_addr << 16;
1791
1792 /* Register new MAC in pHYP */
1793 if (port->state == EHEA_PORT_UP) {
1794 ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
1795 if (ret)
1796 goto out_upregs;
1797 }
1798
1799 ret = 0;
1800
1801 out_upregs:
1802 ehea_update_bcmc_registrations();
1803 spin_unlock(&ehea_bcmc_regs.lock);
1804 out_free:
1805 kfree(cb0);
1806 out:
1807 return ret;
1808 }
1809
1810 static void ehea_promiscuous_error(u64 hret, int enable)
1811 {
1812 if (hret == H_AUTHORITY)
1813 ehea_info("Hypervisor denied %sabling promiscuous mode",
1814 enable == 1 ? "en" : "dis");
1815 else
1816 ehea_error("failed %sabling promiscuous mode",
1817 enable == 1 ? "en" : "dis");
1818 }
1819
1820 static void ehea_promiscuous(struct net_device *dev, int enable)
1821 {
1822 struct ehea_port *port = netdev_priv(dev);
1823 struct hcp_ehea_port_cb7 *cb7;
1824 u64 hret;
1825
1826 if ((enable && port->promisc) || (!enable && !port->promisc))
1827 return;
1828
1829 cb7 = kzalloc(PAGE_SIZE, GFP_ATOMIC);
1830 if (!cb7) {
1831 ehea_error("no mem for cb7");
1832 goto out;
1833 }
1834
1835 /* Modify Pxs_DUCQPN in CB7 */
1836 cb7->def_uc_qpn = enable == 1 ? port->port_res[0].qp->fw_handle : 0;
1837
1838 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1839 port->logical_port_id,
1840 H_PORT_CB7, H_PORT_CB7_DUCQPN, cb7);
1841 if (hret) {
1842 ehea_promiscuous_error(hret, enable);
1843 goto out;
1844 }
1845
1846 port->promisc = enable;
1847 out:
1848 kfree(cb7);
1849 return;
1850 }
1851
1852 static u64 ehea_multicast_reg_helper(struct ehea_port *port, u64 mc_mac_addr,
1853 u32 hcallid)
1854 {
1855 u64 hret;
1856 u8 reg_type;
1857
1858 reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST
1859 | EHEA_BCMC_UNTAGGED;
1860
1861 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1862 port->logical_port_id,
1863 reg_type, mc_mac_addr, 0, hcallid);
1864 if (hret)
1865 goto out;
1866
1867 reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST
1868 | EHEA_BCMC_VLANID_ALL;
1869
1870 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1871 port->logical_port_id,
1872 reg_type, mc_mac_addr, 0, hcallid);
1873 out:
1874 return hret;
1875 }
1876
1877 static int ehea_drop_multicast_list(struct net_device *dev)
1878 {
1879 struct ehea_port *port = netdev_priv(dev);
1880 struct ehea_mc_list *mc_entry = port->mc_list;
1881 struct list_head *pos;
1882 struct list_head *temp;
1883 int ret = 0;
1884 u64 hret;
1885
1886 list_for_each_safe(pos, temp, &(port->mc_list->list)) {
1887 mc_entry = list_entry(pos, struct ehea_mc_list, list);
1888
1889 hret = ehea_multicast_reg_helper(port, mc_entry->macaddr,
1890 H_DEREG_BCMC);
1891 if (hret) {
1892 ehea_error("failed deregistering mcast MAC");
1893 ret = -EIO;
1894 }
1895
1896 list_del(pos);
1897 kfree(mc_entry);
1898 }
1899 return ret;
1900 }
1901
1902 static void ehea_allmulti(struct net_device *dev, int enable)
1903 {
1904 struct ehea_port *port = netdev_priv(dev);
1905 u64 hret;
1906
1907 if (!port->allmulti) {
1908 if (enable) {
1909 /* Enable ALLMULTI */
1910 ehea_drop_multicast_list(dev);
1911 hret = ehea_multicast_reg_helper(port, 0, H_REG_BCMC);
1912 if (!hret)
1913 port->allmulti = 1;
1914 else
1915 ehea_error("failed enabling IFF_ALLMULTI");
1916 }
1917 } else
1918 if (!enable) {
1919 /* Disable ALLMULTI */
1920 hret = ehea_multicast_reg_helper(port, 0, H_DEREG_BCMC);
1921 if (!hret)
1922 port->allmulti = 0;
1923 else
1924 ehea_error("failed disabling IFF_ALLMULTI");
1925 }
1926 }
1927
1928 static void ehea_add_multicast_entry(struct ehea_port *port, u8 *mc_mac_addr)
1929 {
1930 struct ehea_mc_list *ehea_mcl_entry;
1931 u64 hret;
1932
1933 ehea_mcl_entry = kzalloc(sizeof(*ehea_mcl_entry), GFP_ATOMIC);
1934 if (!ehea_mcl_entry) {
1935 ehea_error("no mem for mcl_entry");
1936 return;
1937 }
1938
1939 INIT_LIST_HEAD(&ehea_mcl_entry->list);
1940
1941 memcpy(&ehea_mcl_entry->macaddr, mc_mac_addr, ETH_ALEN);
1942
1943 hret = ehea_multicast_reg_helper(port, ehea_mcl_entry->macaddr,
1944 H_REG_BCMC);
1945 if (!hret)
1946 list_add(&ehea_mcl_entry->list, &port->mc_list->list);
1947 else {
1948 ehea_error("failed registering mcast MAC");
1949 kfree(ehea_mcl_entry);
1950 }
1951 }
1952
1953 static void ehea_set_multicast_list(struct net_device *dev)
1954 {
1955 struct ehea_port *port = netdev_priv(dev);
1956 struct dev_mc_list *k_mcl_entry;
1957 int ret, i;
1958
1959 if (dev->flags & IFF_PROMISC) {
1960 ehea_promiscuous(dev, 1);
1961 return;
1962 }
1963 ehea_promiscuous(dev, 0);
1964
1965 spin_lock(&ehea_bcmc_regs.lock);
1966
1967 if (dev->flags & IFF_ALLMULTI) {
1968 ehea_allmulti(dev, 1);
1969 goto out;
1970 }
1971 ehea_allmulti(dev, 0);
1972
1973 if (dev->mc_count) {
1974 ret = ehea_drop_multicast_list(dev);
1975 if (ret) {
1976 /* Dropping the current multicast list failed.
1977 * Enabling ALL_MULTI is the best we can do.
1978 */
1979 ehea_allmulti(dev, 1);
1980 }
1981
1982 if (dev->mc_count > port->adapter->max_mc_mac) {
1983 ehea_info("Mcast registration limit reached (0x%lx). "
1984 "Use ALLMULTI!",
1985 port->adapter->max_mc_mac);
1986 goto out;
1987 }
1988
1989 for (i = 0, k_mcl_entry = dev->mc_list; i < dev->mc_count; i++,
1990 k_mcl_entry = k_mcl_entry->next)
1991 ehea_add_multicast_entry(port, k_mcl_entry->dmi_addr);
1992
1993 }
1994 out:
1995 ehea_update_bcmc_registrations();
1996 spin_unlock(&ehea_bcmc_regs.lock);
1997 return;
1998 }
1999
2000 static int ehea_change_mtu(struct net_device *dev, int new_mtu)
2001 {
2002 if ((new_mtu < 68) || (new_mtu > EHEA_MAX_PACKET_SIZE))
2003 return -EINVAL;
2004 dev->mtu = new_mtu;
2005 return 0;
2006 }
2007
2008 static void ehea_xmit2(struct sk_buff *skb, struct net_device *dev,
2009 struct ehea_swqe *swqe, u32 lkey)
2010 {
2011 if (skb->protocol == htons(ETH_P_IP)) {
2012 const struct iphdr *iph = ip_hdr(skb);
2013
2014 /* IPv4 */
2015 swqe->tx_control |= EHEA_SWQE_CRC
2016 | EHEA_SWQE_IP_CHECKSUM
2017 | EHEA_SWQE_TCP_CHECKSUM
2018 | EHEA_SWQE_IMM_DATA_PRESENT
2019 | EHEA_SWQE_DESCRIPTORS_PRESENT;
2020
2021 write_ip_start_end(swqe, skb);
2022
2023 if (iph->protocol == IPPROTO_UDP) {
2024 if ((iph->frag_off & IP_MF)
2025 || (iph->frag_off & IP_OFFSET))
2026 /* IP fragment, so don't change cs */
2027 swqe->tx_control &= ~EHEA_SWQE_TCP_CHECKSUM;
2028 else
2029 write_udp_offset_end(swqe, skb);
2030 } else if (iph->protocol == IPPROTO_TCP) {
2031 write_tcp_offset_end(swqe, skb);
2032 }
2033
2034 /* icmp (big data) and ip segmentation packets (all other ip
2035 packets) do not require any special handling */
2036
2037 } else {
2038 /* Other Ethernet Protocol */
2039 swqe->tx_control |= EHEA_SWQE_CRC
2040 | EHEA_SWQE_IMM_DATA_PRESENT
2041 | EHEA_SWQE_DESCRIPTORS_PRESENT;
2042 }
2043
2044 write_swqe2_data(skb, dev, swqe, lkey);
2045 }
2046
2047 static void ehea_xmit3(struct sk_buff *skb, struct net_device *dev,
2048 struct ehea_swqe *swqe)
2049 {
2050 int nfrags = skb_shinfo(skb)->nr_frags;
2051 u8 *imm_data = &swqe->u.immdata_nodesc.immediate_data[0];
2052 skb_frag_t *frag;
2053 int i;
2054
2055 if (skb->protocol == htons(ETH_P_IP)) {
2056 const struct iphdr *iph = ip_hdr(skb);
2057
2058 /* IPv4 */
2059 write_ip_start_end(swqe, skb);
2060
2061 if (iph->protocol == IPPROTO_TCP) {
2062 swqe->tx_control |= EHEA_SWQE_CRC
2063 | EHEA_SWQE_IP_CHECKSUM
2064 | EHEA_SWQE_TCP_CHECKSUM
2065 | EHEA_SWQE_IMM_DATA_PRESENT;
2066
2067 write_tcp_offset_end(swqe, skb);
2068
2069 } else if (iph->protocol == IPPROTO_UDP) {
2070 if ((iph->frag_off & IP_MF)
2071 || (iph->frag_off & IP_OFFSET))
2072 /* IP fragment, so don't change cs */
2073 swqe->tx_control |= EHEA_SWQE_CRC
2074 | EHEA_SWQE_IMM_DATA_PRESENT;
2075 else {
2076 swqe->tx_control |= EHEA_SWQE_CRC
2077 | EHEA_SWQE_IP_CHECKSUM
2078 | EHEA_SWQE_TCP_CHECKSUM
2079 | EHEA_SWQE_IMM_DATA_PRESENT;
2080
2081 write_udp_offset_end(swqe, skb);
2082 }
2083 } else {
2084 /* icmp (big data) and
2085 ip segmentation packets (all other ip packets) */
2086 swqe->tx_control |= EHEA_SWQE_CRC
2087 | EHEA_SWQE_IP_CHECKSUM
2088 | EHEA_SWQE_IMM_DATA_PRESENT;
2089 }
2090 } else {
2091 /* Other Ethernet Protocol */
2092 swqe->tx_control |= EHEA_SWQE_CRC | EHEA_SWQE_IMM_DATA_PRESENT;
2093 }
2094 /* copy (immediate) data */
2095 if (nfrags == 0) {
2096 /* data is in a single piece */
2097 skb_copy_from_linear_data(skb, imm_data, skb->len);
2098 } else {
2099 /* first copy data from the skb->data buffer ... */
2100 skb_copy_from_linear_data(skb, imm_data,
2101 skb->len - skb->data_len);
2102 imm_data += skb->len - skb->data_len;
2103
2104 /* ... then copy data from the fragments */
2105 for (i = 0; i < nfrags; i++) {
2106 frag = &skb_shinfo(skb)->frags[i];
2107 memcpy(imm_data,
2108 page_address(frag->page) + frag->page_offset,
2109 frag->size);
2110 imm_data += frag->size;
2111 }
2112 }
2113 swqe->immediate_data_length = skb->len;
2114 dev_kfree_skb(skb);
2115 }
2116
2117 static inline int ehea_hash_skb(struct sk_buff *skb, int num_qps)
2118 {
2119 struct tcphdr *tcp;
2120 u32 tmp;
2121
2122 if ((skb->protocol == htons(ETH_P_IP)) &&
2123 (ip_hdr(skb)->protocol == IPPROTO_TCP)) {
2124 tcp = (struct tcphdr *)(skb_network_header(skb) +
2125 (ip_hdr(skb)->ihl * 4));
2126 tmp = (tcp->source + (tcp->dest << 16)) % 31;
2127 tmp += ip_hdr(skb)->daddr % 31;
2128 return tmp % num_qps;
2129 } else
2130 return 0;
2131 }
2132
2133 static int ehea_start_xmit(struct sk_buff *skb, struct net_device *dev)
2134 {
2135 struct ehea_port *port = netdev_priv(dev);
2136 struct ehea_swqe *swqe;
2137 unsigned long flags;
2138 u32 lkey;
2139 int swqe_index;
2140 struct ehea_port_res *pr;
2141
2142 pr = &port->port_res[ehea_hash_skb(skb, port->num_tx_qps)];
2143
2144 if (!spin_trylock(&pr->xmit_lock))
2145 return NETDEV_TX_BUSY;
2146
2147 if (pr->queue_stopped) {
2148 spin_unlock(&pr->xmit_lock);
2149 return NETDEV_TX_BUSY;
2150 }
2151
2152 swqe = ehea_get_swqe(pr->qp, &swqe_index);
2153 memset(swqe, 0, SWQE_HEADER_SIZE);
2154 atomic_dec(&pr->swqe_avail);
2155
2156 if (skb->len <= SWQE3_MAX_IMM) {
2157 u32 sig_iv = port->sig_comp_iv;
2158 u32 swqe_num = pr->swqe_id_counter;
2159 ehea_xmit3(skb, dev, swqe);
2160 swqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE3_TYPE)
2161 | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, swqe_num);
2162 if (pr->swqe_ll_count >= (sig_iv - 1)) {
2163 swqe->wr_id |= EHEA_BMASK_SET(EHEA_WR_ID_REFILL,
2164 sig_iv);
2165 swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
2166 pr->swqe_ll_count = 0;
2167 } else
2168 pr->swqe_ll_count += 1;
2169 } else {
2170 swqe->wr_id =
2171 EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE2_TYPE)
2172 | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, pr->swqe_id_counter)
2173 | EHEA_BMASK_SET(EHEA_WR_ID_REFILL, 1)
2174 | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, pr->sq_skba.index);
2175 pr->sq_skba.arr[pr->sq_skba.index] = skb;
2176
2177 pr->sq_skba.index++;
2178 pr->sq_skba.index &= (pr->sq_skba.len - 1);
2179
2180 lkey = pr->send_mr.lkey;
2181 ehea_xmit2(skb, dev, swqe, lkey);
2182 swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
2183 }
2184 pr->swqe_id_counter += 1;
2185
2186 if (port->vgrp && vlan_tx_tag_present(skb)) {
2187 swqe->tx_control |= EHEA_SWQE_VLAN_INSERT;
2188 swqe->vlan_tag = vlan_tx_tag_get(skb);
2189 }
2190
2191 if (netif_msg_tx_queued(port)) {
2192 ehea_info("post swqe on QP %d", pr->qp->init_attr.qp_nr);
2193 ehea_dump(swqe, 512, "swqe");
2194 }
2195
2196 if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) {
2197 netif_stop_queue(dev);
2198 swqe->tx_control |= EHEA_SWQE_PURGE;
2199 }
2200
2201 ehea_post_swqe(pr->qp, swqe);
2202 pr->tx_packets++;
2203
2204 if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) {
2205 spin_lock_irqsave(&pr->netif_queue, flags);
2206 if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) {
2207 pr->p_stats.queue_stopped++;
2208 netif_stop_queue(dev);
2209 pr->queue_stopped = 1;
2210 }
2211 spin_unlock_irqrestore(&pr->netif_queue, flags);
2212 }
2213 dev->trans_start = jiffies;
2214 spin_unlock(&pr->xmit_lock);
2215
2216 return NETDEV_TX_OK;
2217 }
2218
2219 static void ehea_vlan_rx_register(struct net_device *dev,
2220 struct vlan_group *grp)
2221 {
2222 struct ehea_port *port = netdev_priv(dev);
2223 struct ehea_adapter *adapter = port->adapter;
2224 struct hcp_ehea_port_cb1 *cb1;
2225 u64 hret;
2226
2227 port->vgrp = grp;
2228
2229 cb1 = kzalloc(PAGE_SIZE, GFP_KERNEL);
2230 if (!cb1) {
2231 ehea_error("no mem for cb1");
2232 goto out;
2233 }
2234
2235 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
2236 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2237 if (hret != H_SUCCESS)
2238 ehea_error("modify_ehea_port failed");
2239
2240 kfree(cb1);
2241 out:
2242 return;
2243 }
2244
2245 static void ehea_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
2246 {
2247 struct ehea_port *port = netdev_priv(dev);
2248 struct ehea_adapter *adapter = port->adapter;
2249 struct hcp_ehea_port_cb1 *cb1;
2250 int index;
2251 u64 hret;
2252
2253 cb1 = kzalloc(PAGE_SIZE, GFP_KERNEL);
2254 if (!cb1) {
2255 ehea_error("no mem for cb1");
2256 goto out;
2257 }
2258
2259 hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
2260 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2261 if (hret != H_SUCCESS) {
2262 ehea_error("query_ehea_port failed");
2263 goto out;
2264 }
2265
2266 index = (vid / 64);
2267 cb1->vlan_filter[index] |= ((u64)(0x8000000000000000 >> (vid & 0x3F)));
2268
2269 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
2270 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2271 if (hret != H_SUCCESS)
2272 ehea_error("modify_ehea_port failed");
2273 out:
2274 kfree(cb1);
2275 return;
2276 }
2277
2278 static void ehea_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
2279 {
2280 struct ehea_port *port = netdev_priv(dev);
2281 struct ehea_adapter *adapter = port->adapter;
2282 struct hcp_ehea_port_cb1 *cb1;
2283 int index;
2284 u64 hret;
2285
2286 vlan_group_set_device(port->vgrp, vid, NULL);
2287
2288 cb1 = kzalloc(PAGE_SIZE, GFP_KERNEL);
2289 if (!cb1) {
2290 ehea_error("no mem for cb1");
2291 goto out;
2292 }
2293
2294 hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
2295 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2296 if (hret != H_SUCCESS) {
2297 ehea_error("query_ehea_port failed");
2298 goto out;
2299 }
2300
2301 index = (vid / 64);
2302 cb1->vlan_filter[index] &= ~((u64)(0x8000000000000000 >> (vid & 0x3F)));
2303
2304 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
2305 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2306 if (hret != H_SUCCESS)
2307 ehea_error("modify_ehea_port failed");
2308 out:
2309 kfree(cb1);
2310 return;
2311 }
2312
2313 int ehea_activate_qp(struct ehea_adapter *adapter, struct ehea_qp *qp)
2314 {
2315 int ret = -EIO;
2316 u64 hret;
2317 u16 dummy16 = 0;
2318 u64 dummy64 = 0;
2319 struct hcp_modify_qp_cb0 *cb0;
2320
2321 cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL);
2322 if (!cb0) {
2323 ret = -ENOMEM;
2324 goto out;
2325 }
2326
2327 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2328 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2329 if (hret != H_SUCCESS) {
2330 ehea_error("query_ehea_qp failed (1)");
2331 goto out;
2332 }
2333
2334 cb0->qp_ctl_reg = H_QP_CR_STATE_INITIALIZED;
2335 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2336 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2337 &dummy64, &dummy64, &dummy16, &dummy16);
2338 if (hret != H_SUCCESS) {
2339 ehea_error("modify_ehea_qp failed (1)");
2340 goto out;
2341 }
2342
2343 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2344 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2345 if (hret != H_SUCCESS) {
2346 ehea_error("query_ehea_qp failed (2)");
2347 goto out;
2348 }
2349
2350 cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_INITIALIZED;
2351 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2352 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2353 &dummy64, &dummy64, &dummy16, &dummy16);
2354 if (hret != H_SUCCESS) {
2355 ehea_error("modify_ehea_qp failed (2)");
2356 goto out;
2357 }
2358
2359 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2360 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2361 if (hret != H_SUCCESS) {
2362 ehea_error("query_ehea_qp failed (3)");
2363 goto out;
2364 }
2365
2366 cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_RDY2SND;
2367 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2368 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2369 &dummy64, &dummy64, &dummy16, &dummy16);
2370 if (hret != H_SUCCESS) {
2371 ehea_error("modify_ehea_qp failed (3)");
2372 goto out;
2373 }
2374
2375 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2376 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2377 if (hret != H_SUCCESS) {
2378 ehea_error("query_ehea_qp failed (4)");
2379 goto out;
2380 }
2381
2382 ret = 0;
2383 out:
2384 kfree(cb0);
2385 return ret;
2386 }
2387
2388 static int ehea_port_res_setup(struct ehea_port *port, int def_qps,
2389 int add_tx_qps)
2390 {
2391 int ret, i;
2392 struct port_res_cfg pr_cfg, pr_cfg_small_rx;
2393 enum ehea_eq_type eq_type = EHEA_EQ;
2394
2395 port->qp_eq = ehea_create_eq(port->adapter, eq_type,
2396 EHEA_MAX_ENTRIES_EQ, 1);
2397 if (!port->qp_eq) {
2398 ret = -EINVAL;
2399 ehea_error("ehea_create_eq failed (qp_eq)");
2400 goto out_kill_eq;
2401 }
2402
2403 pr_cfg.max_entries_rcq = rq1_entries + rq2_entries + rq3_entries;
2404 pr_cfg.max_entries_scq = sq_entries * 2;
2405 pr_cfg.max_entries_sq = sq_entries;
2406 pr_cfg.max_entries_rq1 = rq1_entries;
2407 pr_cfg.max_entries_rq2 = rq2_entries;
2408 pr_cfg.max_entries_rq3 = rq3_entries;
2409
2410 pr_cfg_small_rx.max_entries_rcq = 1;
2411 pr_cfg_small_rx.max_entries_scq = sq_entries;
2412 pr_cfg_small_rx.max_entries_sq = sq_entries;
2413 pr_cfg_small_rx.max_entries_rq1 = 1;
2414 pr_cfg_small_rx.max_entries_rq2 = 1;
2415 pr_cfg_small_rx.max_entries_rq3 = 1;
2416
2417 for (i = 0; i < def_qps; i++) {
2418 ret = ehea_init_port_res(port, &port->port_res[i], &pr_cfg, i);
2419 if (ret)
2420 goto out_clean_pr;
2421 }
2422 for (i = def_qps; i < def_qps + add_tx_qps; i++) {
2423 ret = ehea_init_port_res(port, &port->port_res[i],
2424 &pr_cfg_small_rx, i);
2425 if (ret)
2426 goto out_clean_pr;
2427 }
2428
2429 return 0;
2430
2431 out_clean_pr:
2432 while (--i >= 0)
2433 ehea_clean_portres(port, &port->port_res[i]);
2434
2435 out_kill_eq:
2436 ehea_destroy_eq(port->qp_eq);
2437 return ret;
2438 }
2439
2440 static int ehea_clean_all_portres(struct ehea_port *port)
2441 {
2442 int ret = 0;
2443 int i;
2444
2445 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
2446 ret |= ehea_clean_portres(port, &port->port_res[i]);
2447
2448 ret |= ehea_destroy_eq(port->qp_eq);
2449
2450 return ret;
2451 }
2452
2453 static void ehea_remove_adapter_mr(struct ehea_adapter *adapter)
2454 {
2455 if (adapter->active_ports)
2456 return;
2457
2458 ehea_rem_mr(&adapter->mr);
2459 }
2460
2461 static int ehea_add_adapter_mr(struct ehea_adapter *adapter)
2462 {
2463 if (adapter->active_ports)
2464 return 0;
2465
2466 return ehea_reg_kernel_mr(adapter, &adapter->mr);
2467 }
2468
2469 static int ehea_up(struct net_device *dev)
2470 {
2471 int ret, i;
2472 struct ehea_port *port = netdev_priv(dev);
2473
2474 if (port->state == EHEA_PORT_UP)
2475 return 0;
2476
2477 mutex_lock(&ehea_fw_handles.lock);
2478
2479 ret = ehea_port_res_setup(port, port->num_def_qps,
2480 port->num_add_tx_qps);
2481 if (ret) {
2482 ehea_error("port_res_failed");
2483 goto out;
2484 }
2485
2486 /* Set default QP for this port */
2487 ret = ehea_configure_port(port);
2488 if (ret) {
2489 ehea_error("ehea_configure_port failed. ret:%d", ret);
2490 goto out_clean_pr;
2491 }
2492
2493 ret = ehea_reg_interrupts(dev);
2494 if (ret) {
2495 ehea_error("reg_interrupts failed. ret:%d", ret);
2496 goto out_clean_pr;
2497 }
2498
2499 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
2500 ret = ehea_activate_qp(port->adapter, port->port_res[i].qp);
2501 if (ret) {
2502 ehea_error("activate_qp failed");
2503 goto out_free_irqs;
2504 }
2505 }
2506
2507 for (i = 0; i < port->num_def_qps; i++) {
2508 ret = ehea_fill_port_res(&port->port_res[i]);
2509 if (ret) {
2510 ehea_error("out_free_irqs");
2511 goto out_free_irqs;
2512 }
2513 }
2514
2515 spin_lock(&ehea_bcmc_regs.lock);
2516
2517 ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
2518 if (ret) {
2519 ret = -EIO;
2520 goto out_free_irqs;
2521 }
2522
2523 port->state = EHEA_PORT_UP;
2524
2525 ret = 0;
2526 goto out;
2527
2528 out_free_irqs:
2529 ehea_free_interrupts(dev);
2530
2531 out_clean_pr:
2532 ehea_clean_all_portres(port);
2533 out:
2534 if (ret)
2535 ehea_info("Failed starting %s. ret=%i", dev->name, ret);
2536
2537 ehea_update_bcmc_registrations();
2538 spin_unlock(&ehea_bcmc_regs.lock);
2539
2540 ehea_update_firmware_handles();
2541 mutex_unlock(&ehea_fw_handles.lock);
2542
2543 return ret;
2544 }
2545
2546 static void port_napi_disable(struct ehea_port *port)
2547 {
2548 int i;
2549
2550 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
2551 napi_disable(&port->port_res[i].napi);
2552 }
2553
2554 static void port_napi_enable(struct ehea_port *port)
2555 {
2556 int i;
2557
2558 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
2559 napi_enable(&port->port_res[i].napi);
2560 }
2561
2562 static int ehea_open(struct net_device *dev)
2563 {
2564 int ret;
2565 struct ehea_port *port = netdev_priv(dev);
2566
2567 mutex_lock(&port->port_lock);
2568
2569 if (netif_msg_ifup(port))
2570 ehea_info("enabling port %s", dev->name);
2571
2572 ret = ehea_up(dev);
2573 if (!ret) {
2574 port_napi_enable(port);
2575 netif_start_queue(dev);
2576 }
2577
2578 mutex_unlock(&port->port_lock);
2579
2580 return ret;
2581 }
2582
2583 static int ehea_down(struct net_device *dev)
2584 {
2585 int ret;
2586 struct ehea_port *port = netdev_priv(dev);
2587
2588 if (port->state == EHEA_PORT_DOWN)
2589 return 0;
2590
2591 mutex_lock(&ehea_fw_handles.lock);
2592
2593 spin_lock(&ehea_bcmc_regs.lock);
2594 ehea_drop_multicast_list(dev);
2595 ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
2596
2597 ehea_free_interrupts(dev);
2598
2599 port->state = EHEA_PORT_DOWN;
2600
2601 ehea_update_bcmc_registrations();
2602 spin_unlock(&ehea_bcmc_regs.lock);
2603
2604 ret = ehea_clean_all_portres(port);
2605 if (ret)
2606 ehea_info("Failed freeing resources for %s. ret=%i",
2607 dev->name, ret);
2608
2609 ehea_update_firmware_handles();
2610 mutex_unlock(&ehea_fw_handles.lock);
2611
2612 return ret;
2613 }
2614
2615 static int ehea_stop(struct net_device *dev)
2616 {
2617 int ret;
2618 struct ehea_port *port = netdev_priv(dev);
2619
2620 if (netif_msg_ifdown(port))
2621 ehea_info("disabling port %s", dev->name);
2622
2623 set_bit(__EHEA_DISABLE_PORT_RESET, &port->flags);
2624 cancel_work_sync(&port->reset_task);
2625 mutex_lock(&port->port_lock);
2626 netif_stop_queue(dev);
2627 port_napi_disable(port);
2628 ret = ehea_down(dev);
2629 mutex_unlock(&port->port_lock);
2630 clear_bit(__EHEA_DISABLE_PORT_RESET, &port->flags);
2631 return ret;
2632 }
2633
2634 static void ehea_purge_sq(struct ehea_qp *orig_qp)
2635 {
2636 struct ehea_qp qp = *orig_qp;
2637 struct ehea_qp_init_attr *init_attr = &qp.init_attr;
2638 struct ehea_swqe *swqe;
2639 int wqe_index;
2640 int i;
2641
2642 for (i = 0; i < init_attr->act_nr_send_wqes; i++) {
2643 swqe = ehea_get_swqe(&qp, &wqe_index);
2644 swqe->tx_control |= EHEA_SWQE_PURGE;
2645 }
2646 }
2647
2648 static void ehea_flush_sq(struct ehea_port *port)
2649 {
2650 int i;
2651
2652 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
2653 struct ehea_port_res *pr = &port->port_res[i];
2654 int swqe_max = pr->sq_skba_size - 2 - pr->swqe_ll_count;
2655 int k = 0;
2656 while (atomic_read(&pr->swqe_avail) < swqe_max) {
2657 msleep(5);
2658 if (++k == 20)
2659 break;
2660 }
2661 }
2662 }
2663
2664 int ehea_stop_qps(struct net_device *dev)
2665 {
2666 struct ehea_port *port = netdev_priv(dev);
2667 struct ehea_adapter *adapter = port->adapter;
2668 struct hcp_modify_qp_cb0 *cb0;
2669 int ret = -EIO;
2670 int dret;
2671 int i;
2672 u64 hret;
2673 u64 dummy64 = 0;
2674 u16 dummy16 = 0;
2675
2676 cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL);
2677 if (!cb0) {
2678 ret = -ENOMEM;
2679 goto out;
2680 }
2681
2682 for (i = 0; i < (port->num_def_qps + port->num_add_tx_qps); i++) {
2683 struct ehea_port_res *pr = &port->port_res[i];
2684 struct ehea_qp *qp = pr->qp;
2685
2686 /* Purge send queue */
2687 ehea_purge_sq(qp);
2688
2689 /* Disable queue pair */
2690 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2691 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2692 cb0);
2693 if (hret != H_SUCCESS) {
2694 ehea_error("query_ehea_qp failed (1)");
2695 goto out;
2696 }
2697
2698 cb0->qp_ctl_reg = (cb0->qp_ctl_reg & H_QP_CR_RES_STATE) << 8;
2699 cb0->qp_ctl_reg &= ~H_QP_CR_ENABLED;
2700
2701 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2702 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG,
2703 1), cb0, &dummy64,
2704 &dummy64, &dummy16, &dummy16);
2705 if (hret != H_SUCCESS) {
2706 ehea_error("modify_ehea_qp failed (1)");
2707 goto out;
2708 }
2709
2710 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2711 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2712 cb0);
2713 if (hret != H_SUCCESS) {
2714 ehea_error("query_ehea_qp failed (2)");
2715 goto out;
2716 }
2717
2718 /* deregister shared memory regions */
2719 dret = ehea_rem_smrs(pr);
2720 if (dret) {
2721 ehea_error("unreg shared memory region failed");
2722 goto out;
2723 }
2724 }
2725
2726 ret = 0;
2727 out:
2728 kfree(cb0);
2729
2730 return ret;
2731 }
2732
2733 void ehea_update_rqs(struct ehea_qp *orig_qp, struct ehea_port_res *pr)
2734 {
2735 struct ehea_qp qp = *orig_qp;
2736 struct ehea_qp_init_attr *init_attr = &qp.init_attr;
2737 struct ehea_rwqe *rwqe;
2738 struct sk_buff **skba_rq2 = pr->rq2_skba.arr;
2739 struct sk_buff **skba_rq3 = pr->rq3_skba.arr;
2740 struct sk_buff *skb;
2741 u32 lkey = pr->recv_mr.lkey;
2742
2743
2744 int i;
2745 int index;
2746
2747 for (i = 0; i < init_attr->act_nr_rwqes_rq2 + 1; i++) {
2748 rwqe = ehea_get_next_rwqe(&qp, 2);
2749 rwqe->sg_list[0].l_key = lkey;
2750 index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, rwqe->wr_id);
2751 skb = skba_rq2[index];
2752 if (skb)
2753 rwqe->sg_list[0].vaddr = ehea_map_vaddr(skb->data);
2754 }
2755
2756 for (i = 0; i < init_attr->act_nr_rwqes_rq3 + 1; i++) {
2757 rwqe = ehea_get_next_rwqe(&qp, 3);
2758 rwqe->sg_list[0].l_key = lkey;
2759 index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, rwqe->wr_id);
2760 skb = skba_rq3[index];
2761 if (skb)
2762 rwqe->sg_list[0].vaddr = ehea_map_vaddr(skb->data);
2763 }
2764 }
2765
2766 int ehea_restart_qps(struct net_device *dev)
2767 {
2768 struct ehea_port *port = netdev_priv(dev);
2769 struct ehea_adapter *adapter = port->adapter;
2770 int ret = 0;
2771 int i;
2772
2773 struct hcp_modify_qp_cb0 *cb0;
2774 u64 hret;
2775 u64 dummy64 = 0;
2776 u16 dummy16 = 0;
2777
2778 cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL);
2779 if (!cb0) {
2780 ret = -ENOMEM;
2781 goto out;
2782 }
2783
2784 for (i = 0; i < (port->num_def_qps + port->num_add_tx_qps); i++) {
2785 struct ehea_port_res *pr = &port->port_res[i];
2786 struct ehea_qp *qp = pr->qp;
2787
2788 ret = ehea_gen_smrs(pr);
2789 if (ret) {
2790 ehea_error("creation of shared memory regions failed");
2791 goto out;
2792 }
2793
2794 ehea_update_rqs(qp, pr);
2795
2796 /* Enable queue pair */
2797 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2798 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2799 cb0);
2800 if (hret != H_SUCCESS) {
2801 ehea_error("query_ehea_qp failed (1)");
2802 goto out;
2803 }
2804
2805 cb0->qp_ctl_reg = (cb0->qp_ctl_reg & H_QP_CR_RES_STATE) << 8;
2806 cb0->qp_ctl_reg |= H_QP_CR_ENABLED;
2807
2808 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2809 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG,
2810 1), cb0, &dummy64,
2811 &dummy64, &dummy16, &dummy16);
2812 if (hret != H_SUCCESS) {
2813 ehea_error("modify_ehea_qp failed (1)");
2814 goto out;
2815 }
2816
2817 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2818 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2819 cb0);
2820 if (hret != H_SUCCESS) {
2821 ehea_error("query_ehea_qp failed (2)");
2822 goto out;
2823 }
2824
2825 /* refill entire queue */
2826 ehea_refill_rq1(pr, pr->rq1_skba.index, 0);
2827 ehea_refill_rq2(pr, 0);
2828 ehea_refill_rq3(pr, 0);
2829 }
2830 out:
2831 kfree(cb0);
2832
2833 return ret;
2834 }
2835
2836 static void ehea_reset_port(struct work_struct *work)
2837 {
2838 int ret;
2839 struct ehea_port *port =
2840 container_of(work, struct ehea_port, reset_task);
2841 struct net_device *dev = port->netdev;
2842
2843 port->resets++;
2844 mutex_lock(&port->port_lock);
2845 netif_stop_queue(dev);
2846
2847 port_napi_disable(port);
2848
2849 ehea_down(dev);
2850
2851 ret = ehea_up(dev);
2852 if (ret)
2853 goto out;
2854
2855 ehea_set_multicast_list(dev);
2856
2857 if (netif_msg_timer(port))
2858 ehea_info("Device %s resetted successfully", dev->name);
2859
2860 port_napi_enable(port);
2861
2862 netif_wake_queue(dev);
2863 out:
2864 mutex_unlock(&port->port_lock);
2865 return;
2866 }
2867
2868 static void ehea_rereg_mrs(struct work_struct *work)
2869 {
2870 int ret, i;
2871 struct ehea_adapter *adapter;
2872
2873 mutex_lock(&dlpar_mem_lock);
2874 ehea_info("LPAR memory enlarged - re-initializing driver");
2875
2876 list_for_each_entry(adapter, &adapter_list, list)
2877 if (adapter->active_ports) {
2878 /* Shutdown all ports */
2879 for (i = 0; i < EHEA_MAX_PORTS; i++) {
2880 struct ehea_port *port = adapter->port[i];
2881 struct net_device *dev;
2882
2883 if (!port)
2884 continue;
2885
2886 dev = port->netdev;
2887
2888 if (dev->flags & IFF_UP) {
2889 mutex_lock(&port->port_lock);
2890 netif_stop_queue(dev);
2891 ehea_flush_sq(port);
2892 ret = ehea_stop_qps(dev);
2893 if (ret) {
2894 mutex_unlock(&port->port_lock);
2895 goto out;
2896 }
2897 port_napi_disable(port);
2898 mutex_unlock(&port->port_lock);
2899 }
2900 }
2901
2902 /* Unregister old memory region */
2903 ret = ehea_rem_mr(&adapter->mr);
2904 if (ret) {
2905 ehea_error("unregister MR failed - driver"
2906 " inoperable!");
2907 goto out;
2908 }
2909 }
2910
2911 ehea_destroy_busmap();
2912 ret = ehea_create_busmap();
2913 if (ret) {
2914 ehea_error("creating ehea busmap failed");
2915 goto out;
2916 }
2917
2918 clear_bit(__EHEA_STOP_XFER, &ehea_driver_flags);
2919
2920 list_for_each_entry(adapter, &adapter_list, list)
2921 if (adapter->active_ports) {
2922 /* Register new memory region */
2923 ret = ehea_reg_kernel_mr(adapter, &adapter->mr);
2924 if (ret) {
2925 ehea_error("register MR failed - driver"
2926 " inoperable!");
2927 goto out;
2928 }
2929
2930 /* Restart all ports */
2931 for (i = 0; i < EHEA_MAX_PORTS; i++) {
2932 struct ehea_port *port = adapter->port[i];
2933
2934 if (port) {
2935 struct net_device *dev = port->netdev;
2936
2937 if (dev->flags & IFF_UP) {
2938 mutex_lock(&port->port_lock);
2939 port_napi_enable(port);
2940 ret = ehea_restart_qps(dev);
2941 if (!ret)
2942 netif_wake_queue(dev);
2943 mutex_unlock(&port->port_lock);
2944 }
2945 }
2946 }
2947 }
2948 ehea_info("re-initializing driver complete");
2949 out:
2950 mutex_unlock(&dlpar_mem_lock);
2951 return;
2952 }
2953
2954 static void ehea_tx_watchdog(struct net_device *dev)
2955 {
2956 struct ehea_port *port = netdev_priv(dev);
2957
2958 if (netif_carrier_ok(dev) &&
2959 !test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))
2960 ehea_schedule_port_reset(port);
2961 }
2962
2963 int ehea_sense_adapter_attr(struct ehea_adapter *adapter)
2964 {
2965 struct hcp_query_ehea *cb;
2966 u64 hret;
2967 int ret;
2968
2969 cb = kzalloc(PAGE_SIZE, GFP_KERNEL);
2970 if (!cb) {
2971 ret = -ENOMEM;
2972 goto out;
2973 }
2974
2975 hret = ehea_h_query_ehea(adapter->handle, cb);
2976
2977 if (hret != H_SUCCESS) {
2978 ret = -EIO;
2979 goto out_herr;
2980 }
2981
2982 adapter->max_mc_mac = cb->max_mc_mac - 1;
2983 ret = 0;
2984
2985 out_herr:
2986 kfree(cb);
2987 out:
2988 return ret;
2989 }
2990
2991 int ehea_get_jumboframe_status(struct ehea_port *port, int *jumbo)
2992 {
2993 struct hcp_ehea_port_cb4 *cb4;
2994 u64 hret;
2995 int ret = 0;
2996
2997 *jumbo = 0;
2998
2999 /* (Try to) enable *jumbo frames */
3000 cb4 = kzalloc(PAGE_SIZE, GFP_KERNEL);
3001 if (!cb4) {
3002 ehea_error("no mem for cb4");
3003 ret = -ENOMEM;
3004 goto out;
3005 } else {
3006 hret = ehea_h_query_ehea_port(port->adapter->handle,
3007 port->logical_port_id,
3008 H_PORT_CB4,
3009 H_PORT_CB4_JUMBO, cb4);
3010 if (hret == H_SUCCESS) {
3011 if (cb4->jumbo_frame)
3012 *jumbo = 1;
3013 else {
3014 cb4->jumbo_frame = 1;
3015 hret = ehea_h_modify_ehea_port(port->adapter->
3016 handle,
3017 port->
3018 logical_port_id,
3019 H_PORT_CB4,
3020 H_PORT_CB4_JUMBO,
3021 cb4);
3022 if (hret == H_SUCCESS)
3023 *jumbo = 1;
3024 }
3025 } else
3026 ret = -EINVAL;
3027
3028 kfree(cb4);
3029 }
3030 out:
3031 return ret;
3032 }
3033
3034 static ssize_t ehea_show_port_id(struct device *dev,
3035 struct device_attribute *attr, char *buf)
3036 {
3037 struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev);
3038 return sprintf(buf, "%d", port->logical_port_id);
3039 }
3040
3041 static DEVICE_ATTR(log_port_id, S_IRUSR | S_IRGRP | S_IROTH, ehea_show_port_id,
3042 NULL);
3043
3044 static void __devinit logical_port_release(struct device *dev)
3045 {
3046 struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev);
3047 of_node_put(port->ofdev.node);
3048 }
3049
3050 static struct device *ehea_register_port(struct ehea_port *port,
3051 struct device_node *dn)
3052 {
3053 int ret;
3054
3055 port->ofdev.node = of_node_get(dn);
3056 port->ofdev.dev.parent = &port->adapter->ofdev->dev;
3057 port->ofdev.dev.bus = &ibmebus_bus_type;
3058
3059 sprintf(port->ofdev.dev.bus_id, "port%d", port_name_cnt++);
3060 port->ofdev.dev.release = logical_port_release;
3061
3062 ret = of_device_register(&port->ofdev);
3063 if (ret) {
3064 ehea_error("failed to register device. ret=%d", ret);
3065 goto out;
3066 }
3067
3068 ret = device_create_file(&port->ofdev.dev, &dev_attr_log_port_id);
3069 if (ret) {
3070 ehea_error("failed to register attributes, ret=%d", ret);
3071 goto out_unreg_of_dev;
3072 }
3073
3074 return &port->ofdev.dev;
3075
3076 out_unreg_of_dev:
3077 of_device_unregister(&port->ofdev);
3078 out:
3079 return NULL;
3080 }
3081
3082 static void ehea_unregister_port(struct ehea_port *port)
3083 {
3084 device_remove_file(&port->ofdev.dev, &dev_attr_log_port_id);
3085 of_device_unregister(&port->ofdev);
3086 }
3087
3088 struct ehea_port *ehea_setup_single_port(struct ehea_adapter *adapter,
3089 u32 logical_port_id,
3090 struct device_node *dn)
3091 {
3092 int ret;
3093 struct net_device *dev;
3094 struct ehea_port *port;
3095 struct device *port_dev;
3096 int jumbo;
3097
3098 /* allocate memory for the port structures */
3099 dev = alloc_etherdev(sizeof(struct ehea_port));
3100
3101 if (!dev) {
3102 ehea_error("no mem for net_device");
3103 ret = -ENOMEM;
3104 goto out_err;
3105 }
3106
3107 port = netdev_priv(dev);
3108
3109 mutex_init(&port->port_lock);
3110 port->state = EHEA_PORT_DOWN;
3111 port->sig_comp_iv = sq_entries / 10;
3112
3113 port->adapter = adapter;
3114 port->netdev = dev;
3115 port->logical_port_id = logical_port_id;
3116
3117 port->msg_enable = netif_msg_init(msg_level, EHEA_MSG_DEFAULT);
3118
3119 port->mc_list = kzalloc(sizeof(struct ehea_mc_list), GFP_KERNEL);
3120 if (!port->mc_list) {
3121 ret = -ENOMEM;
3122 goto out_free_ethdev;
3123 }
3124
3125 INIT_LIST_HEAD(&port->mc_list->list);
3126
3127 ret = ehea_sense_port_attr(port);
3128 if (ret)
3129 goto out_free_mc_list;
3130
3131 port_dev = ehea_register_port(port, dn);
3132 if (!port_dev)
3133 goto out_free_mc_list;
3134
3135 SET_NETDEV_DEV(dev, port_dev);
3136
3137 /* initialize net_device structure */
3138 memcpy(dev->dev_addr, &port->mac_addr, ETH_ALEN);
3139
3140 dev->open = ehea_open;
3141 #ifdef CONFIG_NET_POLL_CONTROLLER
3142 dev->poll_controller = ehea_netpoll;
3143 #endif
3144 dev->stop = ehea_stop;
3145 dev->hard_start_xmit = ehea_start_xmit;
3146 dev->get_stats = ehea_get_stats;
3147 dev->set_multicast_list = ehea_set_multicast_list;
3148 dev->set_mac_address = ehea_set_mac_addr;
3149 dev->change_mtu = ehea_change_mtu;
3150 dev->vlan_rx_register = ehea_vlan_rx_register;
3151 dev->vlan_rx_add_vid = ehea_vlan_rx_add_vid;
3152 dev->vlan_rx_kill_vid = ehea_vlan_rx_kill_vid;
3153 dev->features = NETIF_F_SG | NETIF_F_FRAGLIST | NETIF_F_TSO
3154 | NETIF_F_HIGHDMA | NETIF_F_IP_CSUM | NETIF_F_HW_VLAN_TX
3155 | NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_FILTER
3156 | NETIF_F_LLTX;
3157 dev->tx_timeout = &ehea_tx_watchdog;
3158 dev->watchdog_timeo = EHEA_WATCH_DOG_TIMEOUT;
3159
3160 INIT_WORK(&port->reset_task, ehea_reset_port);
3161 ehea_set_ethtool_ops(dev);
3162
3163 ret = register_netdev(dev);
3164 if (ret) {
3165 ehea_error("register_netdev failed. ret=%d", ret);
3166 goto out_unreg_port;
3167 }
3168
3169 port->lro_max_aggr = lro_max_aggr;
3170
3171 ret = ehea_get_jumboframe_status(port, &jumbo);
3172 if (ret)
3173 ehea_error("failed determining jumbo frame status for %s",
3174 port->netdev->name);
3175
3176 ehea_info("%s: Jumbo frames are %sabled", dev->name,
3177 jumbo == 1 ? "en" : "dis");
3178
3179 adapter->active_ports++;
3180
3181 return port;
3182
3183 out_unreg_port:
3184 ehea_unregister_port(port);
3185
3186 out_free_mc_list:
3187 kfree(port->mc_list);
3188
3189 out_free_ethdev:
3190 free_netdev(dev);
3191
3192 out_err:
3193 ehea_error("setting up logical port with id=%d failed, ret=%d",
3194 logical_port_id, ret);
3195 return NULL;
3196 }
3197
3198 static void ehea_shutdown_single_port(struct ehea_port *port)
3199 {
3200 struct ehea_adapter *adapter = port->adapter;
3201 unregister_netdev(port->netdev);
3202 ehea_unregister_port(port);
3203 kfree(port->mc_list);
3204 free_netdev(port->netdev);
3205 adapter->active_ports--;
3206 }
3207
3208 static int ehea_setup_ports(struct ehea_adapter *adapter)
3209 {
3210 struct device_node *lhea_dn;
3211 struct device_node *eth_dn = NULL;
3212
3213 const u32 *dn_log_port_id;
3214 int i = 0;
3215
3216 lhea_dn = adapter->ofdev->node;
3217 while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) {
3218
3219 dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no",
3220 NULL);
3221 if (!dn_log_port_id) {
3222 ehea_error("bad device node: eth_dn name=%s",
3223 eth_dn->full_name);
3224 continue;
3225 }
3226
3227 if (ehea_add_adapter_mr(adapter)) {
3228 ehea_error("creating MR failed");
3229 of_node_put(eth_dn);
3230 return -EIO;
3231 }
3232
3233 adapter->port[i] = ehea_setup_single_port(adapter,
3234 *dn_log_port_id,
3235 eth_dn);
3236 if (adapter->port[i])
3237 ehea_info("%s -> logical port id #%d",
3238 adapter->port[i]->netdev->name,
3239 *dn_log_port_id);
3240 else
3241 ehea_remove_adapter_mr(adapter);
3242
3243 i++;
3244 };
3245 return 0;
3246 }
3247
3248 static struct device_node *ehea_get_eth_dn(struct ehea_adapter *adapter,
3249 u32 logical_port_id)
3250 {
3251 struct device_node *lhea_dn;
3252 struct device_node *eth_dn = NULL;
3253 const u32 *dn_log_port_id;
3254
3255 lhea_dn = adapter->ofdev->node;
3256 while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) {
3257
3258 dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no",
3259 NULL);
3260 if (dn_log_port_id)
3261 if (*dn_log_port_id == logical_port_id)
3262 return eth_dn;
3263 };
3264
3265 return NULL;
3266 }
3267
3268 static ssize_t ehea_probe_port(struct device *dev,
3269 struct device_attribute *attr,
3270 const char *buf, size_t count)
3271 {
3272 struct ehea_adapter *adapter = dev->driver_data;
3273 struct ehea_port *port;
3274 struct device_node *eth_dn = NULL;
3275 int i;
3276
3277 u32 logical_port_id;
3278
3279 sscanf(buf, "%d", &logical_port_id);
3280
3281 port = ehea_get_port(adapter, logical_port_id);
3282
3283 if (port) {
3284 ehea_info("adding port with logical port id=%d failed. port "
3285 "already configured as %s.", logical_port_id,
3286 port->netdev->name);
3287 return -EINVAL;
3288 }
3289
3290 eth_dn = ehea_get_eth_dn(adapter, logical_port_id);
3291
3292 if (!eth_dn) {
3293 ehea_info("no logical port with id %d found", logical_port_id);
3294 return -EINVAL;
3295 }
3296
3297 if (ehea_add_adapter_mr(adapter)) {
3298 ehea_error("creating MR failed");
3299 return -EIO;
3300 }
3301
3302 port = ehea_setup_single_port(adapter, logical_port_id, eth_dn);
3303
3304 of_node_put(eth_dn);
3305
3306 if (port) {
3307 for (i = 0; i < EHEA_MAX_PORTS; i++)
3308 if (!adapter->port[i]) {
3309 adapter->port[i] = port;
3310 break;
3311 }
3312
3313 ehea_info("added %s (logical port id=%d)", port->netdev->name,
3314 logical_port_id);
3315 } else {
3316 ehea_remove_adapter_mr(adapter);
3317 return -EIO;
3318 }
3319
3320 return (ssize_t) count;
3321 }
3322
3323 static ssize_t ehea_remove_port(struct device *dev,
3324 struct device_attribute *attr,
3325 const char *buf, size_t count)
3326 {
3327 struct ehea_adapter *adapter = dev->driver_data;
3328 struct ehea_port *port;
3329 int i;
3330 u32 logical_port_id;
3331
3332 sscanf(buf, "%d", &logical_port_id);
3333
3334 port = ehea_get_port(adapter, logical_port_id);
3335
3336 if (port) {
3337 ehea_info("removed %s (logical port id=%d)", port->netdev->name,
3338 logical_port_id);
3339
3340 ehea_shutdown_single_port(port);
3341
3342 for (i = 0; i < EHEA_MAX_PORTS; i++)
3343 if (adapter->port[i] == port) {
3344 adapter->port[i] = NULL;
3345 break;
3346 }
3347 } else {
3348 ehea_error("removing port with logical port id=%d failed. port "
3349 "not configured.", logical_port_id);
3350 return -EINVAL;
3351 }
3352
3353 ehea_remove_adapter_mr(adapter);
3354
3355 return (ssize_t) count;
3356 }
3357
3358 static DEVICE_ATTR(probe_port, S_IWUSR, NULL, ehea_probe_port);
3359 static DEVICE_ATTR(remove_port, S_IWUSR, NULL, ehea_remove_port);
3360
3361 int ehea_create_device_sysfs(struct of_device *dev)
3362 {
3363 int ret = device_create_file(&dev->dev, &dev_attr_probe_port);
3364 if (ret)
3365 goto out;
3366
3367 ret = device_create_file(&dev->dev, &dev_attr_remove_port);
3368 out:
3369 return ret;
3370 }
3371
3372 void ehea_remove_device_sysfs(struct of_device *dev)
3373 {
3374 device_remove_file(&dev->dev, &dev_attr_probe_port);
3375 device_remove_file(&dev->dev, &dev_attr_remove_port);
3376 }
3377
3378 static int __devinit ehea_probe_adapter(struct of_device *dev,
3379 const struct of_device_id *id)
3380 {
3381 struct ehea_adapter *adapter;
3382 const u64 *adapter_handle;
3383 int ret;
3384
3385 if (!dev || !dev->node) {
3386 ehea_error("Invalid ibmebus device probed");
3387 return -EINVAL;
3388 }
3389 mutex_lock(&ehea_fw_handles.lock);
3390
3391 adapter = kzalloc(sizeof(*adapter), GFP_KERNEL);
3392 if (!adapter) {
3393 ret = -ENOMEM;
3394 dev_err(&dev->dev, "no mem for ehea_adapter\n");
3395 goto out;
3396 }
3397
3398 list_add(&adapter->list, &adapter_list);
3399
3400 adapter->ofdev = dev;
3401
3402 adapter_handle = of_get_property(dev->node, "ibm,hea-handle",
3403 NULL);
3404 if (adapter_handle)
3405 adapter->handle = *adapter_handle;
3406
3407 if (!adapter->handle) {
3408 dev_err(&dev->dev, "failed getting handle for adapter"
3409 " '%s'\n", dev->node->full_name);
3410 ret = -ENODEV;
3411 goto out_free_ad;
3412 }
3413
3414 adapter->pd = EHEA_PD_ID;
3415
3416 dev->dev.driver_data = adapter;
3417
3418
3419 /* initialize adapter and ports */
3420 /* get adapter properties */
3421 ret = ehea_sense_adapter_attr(adapter);
3422 if (ret) {
3423 dev_err(&dev->dev, "sense_adapter_attr failed: %d\n", ret);
3424 goto out_free_ad;
3425 }
3426
3427 adapter->neq = ehea_create_eq(adapter,
3428 EHEA_NEQ, EHEA_MAX_ENTRIES_EQ, 1);
3429 if (!adapter->neq) {
3430 ret = -EIO;
3431 dev_err(&dev->dev, "NEQ creation failed\n");
3432 goto out_free_ad;
3433 }
3434
3435 tasklet_init(&adapter->neq_tasklet, ehea_neq_tasklet,
3436 (unsigned long)adapter);
3437
3438 ret = ibmebus_request_irq(adapter->neq->attr.ist1,
3439 ehea_interrupt_neq, IRQF_DISABLED,
3440 "ehea_neq", adapter);
3441 if (ret) {
3442 dev_err(&dev->dev, "requesting NEQ IRQ failed\n");
3443 goto out_kill_eq;
3444 }
3445
3446 ret = ehea_create_device_sysfs(dev);
3447 if (ret)
3448 goto out_free_irq;
3449
3450 ret = ehea_setup_ports(adapter);
3451 if (ret) {
3452 dev_err(&dev->dev, "setup_ports failed\n");
3453 goto out_rem_dev_sysfs;
3454 }
3455
3456 ret = 0;
3457 goto out;
3458
3459 out_rem_dev_sysfs:
3460 ehea_remove_device_sysfs(dev);
3461
3462 out_free_irq:
3463 ibmebus_free_irq(adapter->neq->attr.ist1, adapter);
3464
3465 out_kill_eq:
3466 ehea_destroy_eq(adapter->neq);
3467
3468 out_free_ad:
3469 kfree(adapter);
3470
3471 out:
3472 ehea_update_firmware_handles();
3473 mutex_unlock(&ehea_fw_handles.lock);
3474 return ret;
3475 }
3476
3477 static int __devexit ehea_remove(struct of_device *dev)
3478 {
3479 struct ehea_adapter *adapter = dev->dev.driver_data;
3480 int i;
3481
3482 for (i = 0; i < EHEA_MAX_PORTS; i++)
3483 if (adapter->port[i]) {
3484 ehea_shutdown_single_port(adapter->port[i]);
3485 adapter->port[i] = NULL;
3486 }
3487
3488 ehea_remove_device_sysfs(dev);
3489
3490 flush_scheduled_work();
3491
3492 mutex_lock(&ehea_fw_handles.lock);
3493
3494 ibmebus_free_irq(adapter->neq->attr.ist1, adapter);
3495 tasklet_kill(&adapter->neq_tasklet);
3496
3497 ehea_destroy_eq(adapter->neq);
3498 ehea_remove_adapter_mr(adapter);
3499 list_del(&adapter->list);
3500 kfree(adapter);
3501
3502 ehea_update_firmware_handles();
3503 mutex_unlock(&ehea_fw_handles.lock);
3504
3505 return 0;
3506 }
3507
3508 void ehea_crash_handler(void)
3509 {
3510 int i;
3511
3512 if (ehea_fw_handles.arr)
3513 for (i = 0; i < ehea_fw_handles.num_entries; i++)
3514 ehea_h_free_resource(ehea_fw_handles.arr[i].adh,
3515 ehea_fw_handles.arr[i].fwh,
3516 FORCE_FREE);
3517
3518 if (ehea_bcmc_regs.arr)
3519 for (i = 0; i < ehea_bcmc_regs.num_entries; i++)
3520 ehea_h_reg_dereg_bcmc(ehea_bcmc_regs.arr[i].adh,
3521 ehea_bcmc_regs.arr[i].port_id,
3522 ehea_bcmc_regs.arr[i].reg_type,
3523 ehea_bcmc_regs.arr[i].macaddr,
3524 0, H_DEREG_BCMC);
3525 }
3526
3527 static int ehea_mem_notifier(struct notifier_block *nb,
3528 unsigned long action, void *data)
3529 {
3530 switch (action) {
3531 case MEM_OFFLINE:
3532 ehea_info("memory has been removed");
3533 ehea_rereg_mrs(NULL);
3534 break;
3535 default:
3536 break;
3537 }
3538 return NOTIFY_OK;
3539 }
3540
3541 static struct notifier_block ehea_mem_nb = {
3542 .notifier_call = ehea_mem_notifier,
3543 };
3544
3545 static int ehea_reboot_notifier(struct notifier_block *nb,
3546 unsigned long action, void *unused)
3547 {
3548 if (action == SYS_RESTART) {
3549 ehea_info("Reboot: freeing all eHEA resources");
3550 ibmebus_unregister_driver(&ehea_driver);
3551 }
3552 return NOTIFY_DONE;
3553 }
3554
3555 static struct notifier_block ehea_reboot_nb = {
3556 .notifier_call = ehea_reboot_notifier,
3557 };
3558
3559 static int check_module_parm(void)
3560 {
3561 int ret = 0;
3562
3563 if ((rq1_entries < EHEA_MIN_ENTRIES_QP) ||
3564 (rq1_entries > EHEA_MAX_ENTRIES_RQ1)) {
3565 ehea_info("Bad parameter: rq1_entries");
3566 ret = -EINVAL;
3567 }
3568 if ((rq2_entries < EHEA_MIN_ENTRIES_QP) ||
3569 (rq2_entries > EHEA_MAX_ENTRIES_RQ2)) {
3570 ehea_info("Bad parameter: rq2_entries");
3571 ret = -EINVAL;
3572 }
3573 if ((rq3_entries < EHEA_MIN_ENTRIES_QP) ||
3574 (rq3_entries > EHEA_MAX_ENTRIES_RQ3)) {
3575 ehea_info("Bad parameter: rq3_entries");
3576 ret = -EINVAL;
3577 }
3578 if ((sq_entries < EHEA_MIN_ENTRIES_QP) ||
3579 (sq_entries > EHEA_MAX_ENTRIES_SQ)) {
3580 ehea_info("Bad parameter: sq_entries");
3581 ret = -EINVAL;
3582 }
3583
3584 return ret;
3585 }
3586
3587 static ssize_t ehea_show_capabilities(struct device_driver *drv,
3588 char *buf)
3589 {
3590 return sprintf(buf, "%d", EHEA_CAPABILITIES);
3591 }
3592
3593 static DRIVER_ATTR(capabilities, S_IRUSR | S_IRGRP | S_IROTH,
3594 ehea_show_capabilities, NULL);
3595
3596 int __init ehea_module_init(void)
3597 {
3598 int ret;
3599
3600 printk(KERN_INFO "IBM eHEA ethernet device driver (Release %s)\n",
3601 DRV_VERSION);
3602
3603
3604 INIT_WORK(&ehea_rereg_mr_task, ehea_rereg_mrs);
3605 memset(&ehea_fw_handles, 0, sizeof(ehea_fw_handles));
3606 memset(&ehea_bcmc_regs, 0, sizeof(ehea_bcmc_regs));
3607
3608 mutex_init(&ehea_fw_handles.lock);
3609 spin_lock_init(&ehea_bcmc_regs.lock);
3610
3611 ret = check_module_parm();
3612 if (ret)
3613 goto out;
3614
3615 ret = ehea_create_busmap();
3616 if (ret)
3617 goto out;
3618
3619 ret = register_reboot_notifier(&ehea_reboot_nb);
3620 if (ret)
3621 ehea_info("failed registering reboot notifier");
3622
3623 ret = register_memory_notifier(&ehea_mem_nb);
3624 if (ret)
3625 ehea_info("failed registering memory remove notifier");
3626
3627 ret = crash_shutdown_register(&ehea_crash_handler);
3628 if (ret)
3629 ehea_info("failed registering crash handler");
3630
3631 ret = ibmebus_register_driver(&ehea_driver);
3632 if (ret) {
3633 ehea_error("failed registering eHEA device driver on ebus");
3634 goto out2;
3635 }
3636
3637 ret = driver_create_file(&ehea_driver.driver,
3638 &driver_attr_capabilities);
3639 if (ret) {
3640 ehea_error("failed to register capabilities attribute, ret=%d",
3641 ret);
3642 goto out3;
3643 }
3644
3645 return ret;
3646
3647 out3:
3648 ibmebus_unregister_driver(&ehea_driver);
3649 out2:
3650 unregister_memory_notifier(&ehea_mem_nb);
3651 unregister_reboot_notifier(&ehea_reboot_nb);
3652 crash_shutdown_unregister(&ehea_crash_handler);
3653 out:
3654 return ret;
3655 }
3656
3657 static void __exit ehea_module_exit(void)
3658 {
3659 int ret;
3660
3661 flush_scheduled_work();
3662 driver_remove_file(&ehea_driver.driver, &driver_attr_capabilities);
3663 ibmebus_unregister_driver(&ehea_driver);
3664 unregister_reboot_notifier(&ehea_reboot_nb);
3665 ret = crash_shutdown_unregister(&ehea_crash_handler);
3666 if (ret)
3667 ehea_info("failed unregistering crash handler");
3668 unregister_memory_notifier(&ehea_mem_nb);
3669 kfree(ehea_fw_handles.arr);
3670 kfree(ehea_bcmc_regs.arr);
3671 ehea_destroy_busmap();
3672 }
3673
3674 module_init(ehea_module_init);
3675 module_exit(ehea_module_exit);
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree