]> git.proxmox.com Git - mirror_ubuntu-artful-kernel.git/blame - drivers/net/ehea/ehea_main.c
projects / mirror_ubuntu-artful-kernel.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
ehea: Fix use after free on reboot
[mirror_ubuntu-artful-kernel.git] / drivers / net / ehea / ehea_main.c
CommitLineData
7a291083
JBT		 1/*
2 * linux/drivers/net/ehea/ehea_main.c
3 *
4 * eHEA ethernet device driver for IBM eServer System p
5 *
6 * (C) Copyright IBM Corp. 2006
7 *
8 * Authors:
508d2b5d
DM		 9 * Christoph Raisch <raisch@de.ibm.com>
10 * Jan-Bernd Themann <themann@de.ibm.com>
11 * Thomas Klein <tklein@de.ibm.com>
7a291083
JBT		 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>
2a6f4e49
JBT		 36#include <linux/notifier.h>
37#include <linux/reboot.h>
48cfb14f 38#include <linux/memory.h>
21eee2dd 39#include <asm/kexec.h>
06f89edf 40#include <linux/mutex.h>
2a6f4e49 41
7a291083
JBT		 42#include <net/ip.h>
43
44#include "ehea.h"
45#include "ehea_qmr.h"
46#include "ehea_phyp.h"
47
48
49MODULE_LICENSE("GPL");
50MODULE_AUTHOR("Christoph Raisch <raisch@de.ibm.com>");
51MODULE_DESCRIPTION("IBM eServer HEA Driver");
52MODULE_VERSION(DRV_VERSION);
53
54
55static int msg_level = -1;
56static int rq1_entries = EHEA_DEF_ENTRIES_RQ1;
57static int rq2_entries = EHEA_DEF_ENTRIES_RQ2;
58static int rq3_entries = EHEA_DEF_ENTRIES_RQ3;
59static int sq_entries = EHEA_DEF_ENTRIES_SQ;
508d2b5d
DM		 60static int use_mcs;
61static int use_lro;
d4dc4ec9 62static int lro_max_aggr = EHEA_LRO_MAX_AGGR;
18604c54 63static int num_tx_qps = EHEA_NUM_TX_QP;
508d2b5d 64static int prop_carrier_state;
7a291083
JBT		 65
66module_param(msg_level, int, 0);
67module_param(rq1_entries, int, 0);
68module_param(rq2_entries, int, 0);
69module_param(rq3_entries, int, 0);
70module_param(sq_entries, int, 0);
8759cf76 71module_param(prop_carrier_state, int, 0);
18604c54 72module_param(use_mcs, int, 0);
d4dc4ec9
JBT		 73module_param(use_lro, int, 0);
74module_param(lro_max_aggr, int, 0);
18604c54 75module_param(num_tx_qps, int, 0);
7a291083 76
18604c54 77MODULE_PARM_DESC(num_tx_qps, "Number of TX-QPS");
7a291083 78MODULE_PARM_DESC(msg_level, "msg_level");
8759cf76
JBT		 79MODULE_PARM_DESC(prop_carrier_state, "Propagate carrier state of physical "
80 "port to stack. 1:yes, 0:no. Default = 0 ");
7a291083
JBT		 81MODULE_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) ")");
84MODULE_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) ")");
87MODULE_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) ")");
90MODULE_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) ")");
18072a5b 93MODULE_PARM_DESC(use_mcs, " 0:NAPI, 1:Multiple receive queues, Default = 0 ");
7a291083 94
d4dc4ec9
JBT		 95MODULE_PARM_DESC(lro_max_aggr, " LRO: Max packets to be aggregated. Default = "
96 __MODULE_STRING(EHEA_LRO_MAX_AGGR));
97MODULE_PARM_DESC(use_lro, " Large Receive Offload, 1: enable, 0: disable, "
98 "Default = 0");
99
508d2b5d 100static int port_name_cnt;
44c82152 101static LIST_HEAD(adapter_list);
508d2b5d 102u64 ehea_driver_flags;
44c82152 103struct work_struct ehea_rereg_mr_task;
06f89edf 104static DEFINE_MUTEX(dlpar_mem_lock);
21eee2dd
TK		 105struct ehea_fw_handle_array ehea_fw_handles;
106struct ehea_bcmc_reg_array ehea_bcmc_regs;
107
d1dea38d 108
6b08f3ae 109static int __devinit ehea_probe_adapter(struct of_device *dev,
d1d25aab 110 const struct of_device_id *id);
d1dea38d 111
6b08f3ae 112static int __devexit ehea_remove(struct of_device *dev);
d1dea38d
TK		 113
114static struct of_device_id ehea_device_table[] = {
115 {
116 .name = "lhea",
117 .compatible = "IBM,lhea",
118 },
119 {},
120};
121
6b08f3ae 122static struct of_platform_driver ehea_driver = {
d1dea38d 123 .name = "ehea",
6b08f3ae 124 .match_table = ehea_device_table,
d1dea38d
TK		 125 .probe = ehea_probe_adapter,
126 .remove = ehea_remove,
127};
128
508d2b5d
DM		 129void ehea_dump(void *adr, int len, char *msg)
130{
7a291083
JBT		 131 int x;
132 unsigned char *deb = adr;
133 for (x = 0; x < len; x += 16) {
d2db9eea 134 printk(DRV_NAME " %s adr=%p ofs=%04x %016lx %016lx\n", msg,
508d2b5d 135 deb, x, *((u64 *)&deb[0]), *((u64 *)&deb[8]));
7a291083
JBT		 136 deb += 16;
137 }
138}
139
21eee2dd
TK		 140static void ehea_update_firmware_handles(void)
141{
142 struct ehea_fw_handle_entry *arr = NULL;
143 struct ehea_adapter *adapter;
144 int num_adapters = 0;
145 int num_ports = 0;
146 int num_portres = 0;
147 int i = 0;
148 int num_fw_handles, k, l;
149
150 /* Determine number of handles */
151 list_for_each_entry(adapter, &adapter_list, list) {
152 num_adapters++;
153
154 for (k = 0; k < EHEA_MAX_PORTS; k++) {
155 struct ehea_port *port = adapter->port[k];
156
157 if (!port || (port->state != EHEA_PORT_UP))
158 continue;
159
160 num_ports++;
161 num_portres += port->num_def_qps + port->num_add_tx_qps;
162 }
163 }
164
165 num_fw_handles = num_adapters * EHEA_NUM_ADAPTER_FW_HANDLES +
166 num_ports * EHEA_NUM_PORT_FW_HANDLES +
167 num_portres * EHEA_NUM_PORTRES_FW_HANDLES;
168
169 if (num_fw_handles) {
170 arr = kzalloc(num_fw_handles * sizeof(*arr), GFP_KERNEL);
171 if (!arr)
172 return; /* Keep the existing array */
173 } else
174 goto out_update;
175
176 list_for_each_entry(adapter, &adapter_list, list) {
177 for (k = 0; k < EHEA_MAX_PORTS; k++) {
178 struct ehea_port *port = adapter->port[k];
179
180 if (!port || (port->state != EHEA_PORT_UP))
181 continue;
182
183 for (l = 0;
184 l < port->num_def_qps + port->num_add_tx_qps;
185 l++) {
186 struct ehea_port_res *pr = &port->port_res[l];
187
188 arr[i].adh = adapter->handle;
189 arr[i++].fwh = pr->qp->fw_handle;
190 arr[i].adh = adapter->handle;
191 arr[i++].fwh = pr->send_cq->fw_handle;
192 arr[i].adh = adapter->handle;
193 arr[i++].fwh = pr->recv_cq->fw_handle;
194 arr[i].adh = adapter->handle;
195 arr[i++].fwh = pr->eq->fw_handle;
196 arr[i].adh = adapter->handle;
197 arr[i++].fwh = pr->send_mr.handle;
198 arr[i].adh = adapter->handle;
199 arr[i++].fwh = pr->recv_mr.handle;
200 }
201 arr[i].adh = adapter->handle;
202 arr[i++].fwh = port->qp_eq->fw_handle;
203 }
204
205 arr[i].adh = adapter->handle;
206 arr[i++].fwh = adapter->neq->fw_handle;
207
208 if (adapter->mr.handle) {
209 arr[i].adh = adapter->handle;
210 arr[i++].fwh = adapter->mr.handle;
211 }
212 }
213
214out_update:
215 kfree(ehea_fw_handles.arr);
216 ehea_fw_handles.arr = arr;
217 ehea_fw_handles.num_entries = i;
218}
219
220static void ehea_update_bcmc_registrations(void)
221{
222 struct ehea_bcmc_reg_entry *arr = NULL;
223 struct ehea_adapter *adapter;
224 struct ehea_mc_list *mc_entry;
225 int num_registrations = 0;
226 int i = 0;
227 int k;
228
229 /* Determine number of registrations */
230 list_for_each_entry(adapter, &adapter_list, list)
231 for (k = 0; k < EHEA_MAX_PORTS; k++) {
232 struct ehea_port *port = adapter->port[k];
233
234 if (!port || (port->state != EHEA_PORT_UP))
235 continue;
236
237 num_registrations += 2; /* Broadcast registrations */
238
239 list_for_each_entry(mc_entry, &port->mc_list->list,list)
240 num_registrations += 2;
241 }
242
243 if (num_registrations) {
244 arr = kzalloc(num_registrations * sizeof(*arr), GFP_KERNEL);
245 if (!arr)
246 return; /* Keep the existing array */
247 } else
248 goto out_update;
249
250 list_for_each_entry(adapter, &adapter_list, list) {
251 for (k = 0; k < EHEA_MAX_PORTS; k++) {
252 struct ehea_port *port = adapter->port[k];
253
254 if (!port || (port->state != EHEA_PORT_UP))
255 continue;
256
257 arr[i].adh = adapter->handle;
258 arr[i].port_id = port->logical_port_id;
259 arr[i].reg_type = EHEA_BCMC_BROADCAST |
260 EHEA_BCMC_UNTAGGED;
261 arr[i++].macaddr = port->mac_addr;
262
263 arr[i].adh = adapter->handle;
264 arr[i].port_id = port->logical_port_id;
265 arr[i].reg_type = EHEA_BCMC_BROADCAST |
266 EHEA_BCMC_VLANID_ALL;
267 arr[i++].macaddr = port->mac_addr;
268
269 list_for_each_entry(mc_entry,
270 &port->mc_list->list, list) {
271 arr[i].adh = adapter->handle;
272 arr[i].port_id = port->logical_port_id;
273 arr[i].reg_type = EHEA_BCMC_SCOPE_ALL |
274 EHEA_BCMC_MULTICAST |
275 EHEA_BCMC_UNTAGGED;
276 arr[i++].macaddr = mc_entry->macaddr;
277
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_VLANID_ALL;
283 arr[i++].macaddr = mc_entry->macaddr;
284 }
285 }
286 }
287
288out_update:
289 kfree(ehea_bcmc_regs.arr);
290 ehea_bcmc_regs.arr = arr;
291 ehea_bcmc_regs.num_entries = i;
292}
293
7a291083
JBT		 294static struct net_device_stats *ehea_get_stats(struct net_device *dev)
295{
296 struct ehea_port *port = netdev_priv(dev);
297 struct net_device_stats *stats = &port->stats;
298 struct hcp_ehea_port_cb2 *cb2;
7393b87c 299 u64 hret, rx_packets, tx_packets;
7a291083
JBT		 300 int i;
301
302 memset(stats, 0, sizeof(*stats));
303
a1d261c5 304 cb2 = kzalloc(PAGE_SIZE, GFP_KERNEL);
7a291083
JBT		 305 if (!cb2) {
306 ehea_error("no mem for cb2");
307 goto out;
308 }
309
310 hret = ehea_h_query_ehea_port(port->adapter->handle,
311 port->logical_port_id,
312 H_PORT_CB2, H_PORT_CB2_ALL, cb2);
313 if (hret != H_SUCCESS) {
314 ehea_error("query_ehea_port failed");
315 goto out_herr;
316 }
317
318 if (netif_msg_hw(port))
319 ehea_dump(cb2, sizeof(*cb2), "net_device_stats");
320
321 rx_packets = 0;
322 for (i = 0; i < port->num_def_qps; i++)
323 rx_packets += port->port_res[i].rx_packets;
324
7393b87c
TK		 325 tx_packets = 0;
326 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
327 tx_packets += port->port_res[i].tx_packets;
328
329 stats->tx_packets = tx_packets;
7a291083
JBT		 330 stats->multicast = cb2->rxmcp;
331 stats->rx_errors = cb2->rxuerr;
332 stats->rx_bytes = cb2->rxo;
333 stats->tx_bytes = cb2->txo;
334 stats->rx_packets = rx_packets;
335
336out_herr:
337 kfree(cb2);
338out:
339 return stats;
340}
341
342static void ehea_refill_rq1(struct ehea_port_res *pr, int index, int nr_of_wqes)
343{
344 struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
345 struct net_device *dev = pr->port->netdev;
346 int max_index_mask = pr->rq1_skba.len - 1;
2c69448b
JBT		 347 int fill_wqes = pr->rq1_skba.os_skbs + nr_of_wqes;
348 int adder = 0;
7a291083
JBT		 349 int i;
350
2c69448b
JBT		 351 pr->rq1_skba.os_skbs = 0;
352
353 if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) {
44fb3126
TK		 354 if (nr_of_wqes > 0)
355 pr->rq1_skba.index = index;
2c69448b 356 pr->rq1_skba.os_skbs = fill_wqes;
7a291083 357 return;
2c69448b 358 }
7a291083 359
2c69448b 360 for (i = 0; i < fill_wqes; i++) {
7a291083
JBT		 361 if (!skb_arr_rq1[index]) {
362 skb_arr_rq1[index] = netdev_alloc_skb(dev,
363 EHEA_L_PKT_SIZE);
364 if (!skb_arr_rq1[index]) {
2c69448b 365 pr->rq1_skba.os_skbs = fill_wqes - i;
7a291083
JBT		 366 ehea_error("%s: no mem for skb/%d wqes filled",
367 dev->name, i);
368 break;
369 }
370 }
371 index--;
372 index &= max_index_mask;
2c69448b 373 adder++;
7a291083 374 }
2c69448b
JBT		 375
376 if (adder == 0)
377 return;
378
7a291083 379 /* Ring doorbell */
2c69448b 380 ehea_update_rq1a(pr->qp, adder);
7a291083
JBT		 381}
382
383static int ehea_init_fill_rq1(struct ehea_port_res *pr, int nr_rq1a)
384{
385 int ret = 0;
386 struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
387 struct net_device *dev = pr->port->netdev;
388 int i;
389
390 for (i = 0; i < pr->rq1_skba.len; i++) {
391 skb_arr_rq1[i] = netdev_alloc_skb(dev, EHEA_L_PKT_SIZE);
392 if (!skb_arr_rq1[i]) {
393 ehea_error("%s: no mem for skb/%d wqes filled",
394 dev->name, i);
395 ret = -ENOMEM;
396 goto out;
397 }
398 }
399 /* Ring doorbell */
400 ehea_update_rq1a(pr->qp, nr_rq1a);
401out:
402 return ret;
403}
404
405static int ehea_refill_rq_def(struct ehea_port_res *pr,
406 struct ehea_q_skb_arr *q_skba, int rq_nr,
407 int num_wqes, int wqe_type, int packet_size)
408{
409 struct net_device *dev = pr->port->netdev;
410 struct ehea_qp *qp = pr->qp;
411 struct sk_buff **skb_arr = q_skba->arr;
412 struct ehea_rwqe *rwqe;
413 int i, index, max_index_mask, fill_wqes;
2c69448b 414 int adder = 0;
7a291083
JBT		 415 int ret = 0;
416
417 fill_wqes = q_skba->os_skbs + num_wqes;
2c69448b 418 q_skba->os_skbs = 0;
7a291083 419
2c69448b
JBT		 420 if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) {
421 q_skba->os_skbs = fill_wqes;
7a291083 422 return ret;
2c69448b 423 }
7a291083
JBT		 424
425 index = q_skba->index;
426 max_index_mask = q_skba->len - 1;
427 for (i = 0; i < fill_wqes; i++) {
2c69448b 428 u64 tmp_addr;
7a291083
JBT		 429 struct sk_buff *skb = netdev_alloc_skb(dev, packet_size);
430 if (!skb) {
431 ehea_error("%s: no mem for skb/%d wqes filled",
18604c54 432 pr->port->netdev->name, i);
7a291083
JBT		 433 q_skba->os_skbs = fill_wqes - i;
434 ret = -ENOMEM;
435 break;
436 }
437 skb_reserve(skb, NET_IP_ALIGN);
438
439 skb_arr[index] = skb;
2c69448b
JBT		 440 tmp_addr = ehea_map_vaddr(skb->data);
441 if (tmp_addr == -1) {
442 dev_kfree_skb(skb);
443 q_skba->os_skbs = fill_wqes - i;
444 ret = 0;
445 break;
446 }
7a291083
JBT		 447
448 rwqe = ehea_get_next_rwqe(qp, rq_nr);
449 rwqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, wqe_type)
d1d25aab 450 | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, index);
7a291083 451 rwqe->sg_list[0].l_key = pr->recv_mr.lkey;
2c69448b 452 rwqe->sg_list[0].vaddr = tmp_addr;
7a291083
JBT		 453 rwqe->sg_list[0].len = packet_size;
454 rwqe->data_segments = 1;
455
456 index++;
457 index &= max_index_mask;
2c69448b 458 adder++;
7a291083 459 }
44c82152 460
7a291083 461 q_skba->index = index;
2c69448b
JBT		 462 if (adder == 0)
463 goto out;
7a291083
JBT		 464
465 /* Ring doorbell */
466 iosync();
467 if (rq_nr == 2)
2c69448b 468 ehea_update_rq2a(pr->qp, adder);
7a291083 469 else
2c69448b 470 ehea_update_rq3a(pr->qp, adder);
44c82152 471out:
7a291083
JBT		 472 return ret;
473}
474
475
476static int ehea_refill_rq2(struct ehea_port_res *pr, int nr_of_wqes)
477{
478 return ehea_refill_rq_def(pr, &pr->rq2_skba, 2,
479 nr_of_wqes, EHEA_RWQE2_TYPE,
480 EHEA_RQ2_PKT_SIZE + NET_IP_ALIGN);
481}
482
483
484static int ehea_refill_rq3(struct ehea_port_res *pr, int nr_of_wqes)
485{
486 return ehea_refill_rq_def(pr, &pr->rq3_skba, 3,
487 nr_of_wqes, EHEA_RWQE3_TYPE,
488 EHEA_MAX_PACKET_SIZE + NET_IP_ALIGN);
489}
490
491static inline int ehea_check_cqe(struct ehea_cqe *cqe, int *rq_num)
492{
493 *rq_num = (cqe->type & EHEA_CQE_TYPE_RQ) >> 5;
494 if ((cqe->status & EHEA_CQE_STAT_ERR_MASK) == 0)
495 return 0;
496 if (((cqe->status & EHEA_CQE_STAT_ERR_TCP) != 0) &&
497 (cqe->header_length == 0))
498 return 0;
499 return -EINVAL;
500}
501
502static inline void ehea_fill_skb(struct net_device *dev,
503 struct sk_buff *skb, struct ehea_cqe *cqe)
504{
505 int length = cqe->num_bytes_transfered - 4; /*remove CRC */
506
507 skb_put(skb, length);
508 skb->ip_summed = CHECKSUM_UNNECESSARY;
509 skb->protocol = eth_type_trans(skb, dev);
510}
511
512static inline struct sk_buff *get_skb_by_index(struct sk_buff **skb_array,
513 int arr_len,
514 struct ehea_cqe *cqe)
515{
516 int skb_index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, cqe->wr_id);
517 struct sk_buff *skb;
518 void *pref;
519 int x;
520
521 x = skb_index + 1;
522 x &= (arr_len - 1);
523
524 pref = skb_array[x];
525 prefetchw(pref);
526 prefetchw(pref + EHEA_CACHE_LINE);
527
528 pref = (skb_array[x]->data);
529 prefetch(pref);
530 prefetch(pref + EHEA_CACHE_LINE);
531 prefetch(pref + EHEA_CACHE_LINE * 2);
532 prefetch(pref + EHEA_CACHE_LINE * 3);
533 skb = skb_array[skb_index];
534 skb_array[skb_index] = NULL;
535 return skb;
536}
537
538static inline struct sk_buff *get_skb_by_index_ll(struct sk_buff **skb_array,
539 int arr_len, int wqe_index)
540{
541 struct sk_buff *skb;
542 void *pref;
543 int x;
544
545 x = wqe_index + 1;
546 x &= (arr_len - 1);
547
548 pref = skb_array[x];
549 prefetchw(pref);
550 prefetchw(pref + EHEA_CACHE_LINE);
551
552 pref = (skb_array[x]->data);
553 prefetchw(pref);
554 prefetchw(pref + EHEA_CACHE_LINE);
555
556 skb = skb_array[wqe_index];
557 skb_array[wqe_index] = NULL;
558 return skb;
559}
560
561static int ehea_treat_poll_error(struct ehea_port_res *pr, int rq,
562 struct ehea_cqe *cqe, int *processed_rq2,
563 int *processed_rq3)
564{
565 struct sk_buff *skb;
566
acbddb59
JBT		 567 if (cqe->status & EHEA_CQE_STAT_ERR_TCP)
568 pr->p_stats.err_tcp_cksum++;
569 if (cqe->status & EHEA_CQE_STAT_ERR_IP)
570 pr->p_stats.err_ip_cksum++;
571 if (cqe->status & EHEA_CQE_STAT_ERR_CRC)
572 pr->p_stats.err_frame_crc++;
573
7a291083
JBT		 574 if (rq == 2) {
575 *processed_rq2 += 1;
576 skb = get_skb_by_index(pr->rq2_skba.arr, pr->rq2_skba.len, cqe);
577 dev_kfree_skb(skb);
578 } else if (rq == 3) {
579 *processed_rq3 += 1;
580 skb = get_skb_by_index(pr->rq3_skba.arr, pr->rq3_skba.len, cqe);
581 dev_kfree_skb(skb);
582 }
583
584 if (cqe->status & EHEA_CQE_STAT_FAT_ERR_MASK) {
58dd8258
TK		 585 if (netif_msg_rx_err(pr->port)) {
586 ehea_error("Critical receive error for QP %d. "
587 "Resetting port.", pr->qp->init_attr.qp_nr);
588 ehea_dump(cqe, sizeof(*cqe), "CQE");
589 }
3bf76b81 590 schedule_work(&pr->port->reset_task);
7a291083
JBT		 591 return 1;
592 }
593
594 return 0;
595}
596
d4dc4ec9
JBT		 597static int get_skb_hdr(struct sk_buff *skb, void **iphdr,
598 void **tcph, u64 *hdr_flags, void *priv)
599{
600 struct ehea_cqe *cqe = priv;
601 unsigned int ip_len;
602 struct iphdr *iph;
603
604 /* non tcp/udp packets */
605 if (!cqe->header_length)
606 return -1;
607
608 /* non tcp packet */
609 skb_reset_network_header(skb);
610 iph = ip_hdr(skb);
611 if (iph->protocol != IPPROTO_TCP)
612 return -1;
613
614 ip_len = ip_hdrlen(skb);
615 skb_set_transport_header(skb, ip_len);
616 *tcph = tcp_hdr(skb);
617
618 /* check if ip header and tcp header are complete */
619 if (iph->tot_len < ip_len + tcp_hdrlen(skb))
620 return -1;
621
622 *hdr_flags = LRO_IPV4 | LRO_TCP;
623 *iphdr = iph;
624
625 return 0;
626}
627
628static void ehea_proc_skb(struct ehea_port_res *pr, struct ehea_cqe *cqe,
629 struct sk_buff *skb)
630{
631 int vlan_extracted = (cqe->status & EHEA_CQE_VLAN_TAG_XTRACT)
632 && pr->port->vgrp;
633
634 if (use_lro) {
635 if (vlan_extracted)
636 lro_vlan_hwaccel_receive_skb(&pr->lro_mgr, skb,
637 pr->port->vgrp,
638 cqe->vlan_tag,
639 cqe);
640 else
641 lro_receive_skb(&pr->lro_mgr, skb, cqe);
642 } else {
643 if (vlan_extracted)
644 vlan_hwaccel_receive_skb(skb, pr->port->vgrp,
645 cqe->vlan_tag);
646 else
647 netif_receive_skb(skb);
648 }
649}
650
bea3348e
SH		 651static int ehea_proc_rwqes(struct net_device *dev,
652 struct ehea_port_res *pr,
653 int budget)
7a291083 654{
18604c54 655 struct ehea_port *port = pr->port;
7a291083
JBT		 656 struct ehea_qp *qp = pr->qp;
657 struct ehea_cqe *cqe;
658 struct sk_buff *skb;
659 struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
660 struct sk_buff **skb_arr_rq2 = pr->rq2_skba.arr;
661 struct sk_buff **skb_arr_rq3 = pr->rq3_skba.arr;
662 int skb_arr_rq1_len = pr->rq1_skba.len;
663 int skb_arr_rq2_len = pr->rq2_skba.len;
664 int skb_arr_rq3_len = pr->rq3_skba.len;
665 int processed, processed_rq1, processed_rq2, processed_rq3;
bea3348e 666 int wqe_index, last_wqe_index, rq, port_reset;
7a291083
JBT		 667
668 processed = processed_rq1 = processed_rq2 = processed_rq3 = 0;
669 last_wqe_index = 0;
7a291083 670
7a291083 671 cqe = ehea_poll_rq1(qp, &wqe_index);
bea3348e 672 while ((processed < budget) && cqe) {
7a291083
JBT		 673 ehea_inc_rq1(qp);
674 processed_rq1++;
675 processed++;
7a291083
JBT		 676 if (netif_msg_rx_status(port))
677 ehea_dump(cqe, sizeof(*cqe), "CQE");
678
679 last_wqe_index = wqe_index;
680 rmb();
681 if (!ehea_check_cqe(cqe, &rq)) {
508d2b5d
DM		 682 if (rq == 1) {
683 /* LL RQ1 */
7a291083
JBT		 684 skb = get_skb_by_index_ll(skb_arr_rq1,
685 skb_arr_rq1_len,
686 wqe_index);
687 if (unlikely(!skb)) {
688 if (netif_msg_rx_err(port))
689 ehea_error("LL rq1: skb=NULL");
18604c54 690
bea3348e 691 skb = netdev_alloc_skb(dev,
7a291083
JBT		 692 EHEA_L_PKT_SIZE);
693 if (!skb)
694 break;
695 }
508d2b5d 696 skb_copy_to_linear_data(skb, ((char *)cqe) + 64,
d1d25aab 697 cqe->num_bytes_transfered - 4);
bea3348e 698 ehea_fill_skb(dev, skb, cqe);
508d2b5d
DM		 699 } else if (rq == 2) {
700 /* RQ2 */
7a291083
JBT		 701 skb = get_skb_by_index(skb_arr_rq2,
702 skb_arr_rq2_len, cqe);
703 if (unlikely(!skb)) {
704 if (netif_msg_rx_err(port))
705 ehea_error("rq2: skb=NULL");
706 break;
707 }
bea3348e 708 ehea_fill_skb(dev, skb, cqe);
7a291083 709 processed_rq2++;
508d2b5d
DM		 710 } else {
711 /* RQ3 */
7a291083
JBT		 712 skb = get_skb_by_index(skb_arr_rq3,
713 skb_arr_rq3_len, cqe);
714 if (unlikely(!skb)) {
715 if (netif_msg_rx_err(port))
716 ehea_error("rq3: skb=NULL");
717 break;
718 }
bea3348e 719 ehea_fill_skb(dev, skb, cqe);
7a291083
JBT		 720 processed_rq3++;
721 }
722
d4dc4ec9 723 ehea_proc_skb(pr, cqe, skb);
bea3348e 724 dev->last_rx = jiffies;
18604c54 725 } else {
acbddb59 726 pr->p_stats.poll_receive_errors++;
7a291083
JBT		 727 port_reset = ehea_treat_poll_error(pr, rq, cqe,
728 &processed_rq2,
729 &processed_rq3);
730 if (port_reset)
731 break;
732 }
733 cqe = ehea_poll_rq1(qp, &wqe_index);
734 }
d4dc4ec9
JBT		 735 if (use_lro)
736 lro_flush_all(&pr->lro_mgr);
7a291083 737
7a291083
JBT		 738 pr->rx_packets += processed;
739
740 ehea_refill_rq1(pr, last_wqe_index, processed_rq1);
741 ehea_refill_rq2(pr, processed_rq2);
742 ehea_refill_rq3(pr, processed_rq3);
743
bea3348e 744 return processed;
7a291083
JBT		 745}
746
18604c54 747static struct ehea_cqe *ehea_proc_cqes(struct ehea_port_res *pr, int my_quota)
7a291083 748{
acbddb59 749 struct sk_buff *skb;
7a291083
JBT		 750 struct ehea_cq *send_cq = pr->send_cq;
751 struct ehea_cqe *cqe;
18604c54 752 int quota = my_quota;
7a291083
JBT		 753 int cqe_counter = 0;
754 int swqe_av = 0;
acbddb59 755 int index;
7a291083
JBT		 756 unsigned long flags;
757
18604c54 758 cqe = ehea_poll_cq(send_cq);
508d2b5d 759 while (cqe && (quota > 0)) {
18604c54
JBT		 760 ehea_inc_cq(send_cq);
761
7a291083
JBT		 762 cqe_counter++;
763 rmb();
764 if (cqe->status & EHEA_CQE_STAT_ERR_MASK) {
765 ehea_error("Send Completion Error: Resetting port");
766 if (netif_msg_tx_err(pr->port))
767 ehea_dump(cqe, sizeof(*cqe), "Send CQE");
3bf76b81 768 schedule_work(&pr->port->reset_task);
7a291083
JBT		 769 break;
770 }
771
772 if (netif_msg_tx_done(pr->port))
773 ehea_dump(cqe, sizeof(*cqe), "CQE");
774
775 if (likely(EHEA_BMASK_GET(EHEA_WR_ID_TYPE, cqe->wr_id)
acbddb59
JBT		 776 == EHEA_SWQE2_TYPE)) {
777
778 index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, cqe->wr_id);
779 skb = pr->sq_skba.arr[index];
780 dev_kfree_skb(skb);
781 pr->sq_skba.arr[index] = NULL;
782 }
7a291083
JBT		 783
784 swqe_av += EHEA_BMASK_GET(EHEA_WR_ID_REFILL, cqe->wr_id);
785 quota--;
18604c54
JBT		 786
787 cqe = ehea_poll_cq(send_cq);
788 };
7a291083
JBT		 789
790 ehea_update_feca(send_cq, cqe_counter);
791 atomic_add(swqe_av, &pr->swqe_avail);
792
793 spin_lock_irqsave(&pr->netif_queue, flags);
18604c54 794
7a291083
JBT		 795 if (pr->queue_stopped && (atomic_read(&pr->swqe_avail)
796 >= pr->swqe_refill_th)) {
797 netif_wake_queue(pr->port->netdev);
798 pr->queue_stopped = 0;
799 }
800 spin_unlock_irqrestore(&pr->netif_queue, flags);
801
18604c54 802 return cqe;
7a291083
JBT		 803}
804
18604c54 805#define EHEA_NAPI_POLL_NUM_BEFORE_IRQ 16
bea3348e 806#define EHEA_POLL_MAX_CQES 65535
18604c54 807
bea3348e 808static int ehea_poll(struct napi_struct *napi, int budget)
7a291083 809{
508d2b5d
DM		 810 struct ehea_port_res *pr = container_of(napi, struct ehea_port_res,
811 napi);
bea3348e 812 struct net_device *dev = pr->port->netdev;
18604c54
JBT		 813 struct ehea_cqe *cqe;
814 struct ehea_cqe *cqe_skb = NULL;
815 int force_irq, wqe_index;
bea3348e 816 int rx = 0;
18604c54
JBT		 817
818 force_irq = (pr->poll_counter > EHEA_NAPI_POLL_NUM_BEFORE_IRQ);
bea3348e
SH		 819 cqe_skb = ehea_proc_cqes(pr, EHEA_POLL_MAX_CQES);
820
821 if (!force_irq)
822 rx += ehea_proc_rwqes(dev, pr, budget - rx);
18604c54 823
bea3348e 824 while ((rx != budget) || force_irq) {
18604c54 825 pr->poll_counter = 0;
bea3348e
SH		 826 force_irq = 0;
827 netif_rx_complete(dev, napi);
18604c54
JBT		 828 ehea_reset_cq_ep(pr->recv_cq);
829 ehea_reset_cq_ep(pr->send_cq);
830 ehea_reset_cq_n1(pr->recv_cq);
831 ehea_reset_cq_n1(pr->send_cq);
832 cqe = ehea_poll_rq1(pr->qp, &wqe_index);
833 cqe_skb = ehea_poll_cq(pr->send_cq);
834
e542aa6b 835 if (!cqe && !cqe_skb)
bea3348e 836 return rx;
18604c54 837
bea3348e
SH		 838 if (!netif_rx_reschedule(dev, napi))
839 return rx;
18604c54 840
bea3348e
SH		 841 cqe_skb = ehea_proc_cqes(pr, EHEA_POLL_MAX_CQES);
842 rx += ehea_proc_rwqes(dev, pr, budget - rx);
843 }
e542aa6b 844
bea3348e
SH		 845 pr->poll_counter++;
846 return rx;
7a291083
JBT		 847}
848
8d22c971
JBT		 849#ifdef CONFIG_NET_POLL_CONTROLLER
850static void ehea_netpoll(struct net_device *dev)
851{
852 struct ehea_port *port = netdev_priv(dev);
bea3348e 853 int i;
8d22c971 854
bea3348e
SH		 855 for (i = 0; i < port->num_def_qps; i++)
856 netif_rx_schedule(dev, &port->port_res[i].napi);
8d22c971
JBT		 857}
858#endif
859
7d12e780 860static irqreturn_t ehea_recv_irq_handler(int irq, void *param)
7a291083
JBT		 861{
862 struct ehea_port_res *pr = param;
18604c54 863
bea3348e 864 netif_rx_schedule(pr->port->netdev, &pr->napi);
18604c54 865
7a291083
JBT		 866 return IRQ_HANDLED;
867}
868
7d12e780 869static irqreturn_t ehea_qp_aff_irq_handler(int irq, void *param)
7a291083
JBT		 870{
871 struct ehea_port *port = param;
872 struct ehea_eqe *eqe;
d2db9eea 873 struct ehea_qp *qp;
7a291083
JBT		 874 u32 qp_token;
875
876 eqe = ehea_poll_eq(port->qp_eq);
bb3a6449 877
7a291083 878 while (eqe) {
7a291083 879 qp_token = EHEA_BMASK_GET(EHEA_EQE_QP_TOKEN, eqe->entry);
bb3a6449
TK		 880 ehea_error("QP aff_err: entry=0x%lx, token=0x%x",
881 eqe->entry, qp_token);
d2db9eea
JBT		 882
883 qp = port->port_res[qp_token].qp;
884 ehea_error_data(port->adapter, qp->fw_handle);
bb3a6449 885 eqe = ehea_poll_eq(port->qp_eq);
7a291083
JBT		 886 }
887
3bf76b81 888 schedule_work(&port->reset_task);
d2db9eea 889
7a291083
JBT		 890 return IRQ_HANDLED;
891}
892
893static struct ehea_port *ehea_get_port(struct ehea_adapter *adapter,
894 int logical_port)
895{
896 int i;
897
1acf2318 898 for (i = 0; i < EHEA_MAX_PORTS; i++)
41b69c70 899 if (adapter->port[i])
d1d25aab 900 if (adapter->port[i]->logical_port_id == logical_port)
41b69c70 901 return adapter->port[i];
7a291083
JBT		 902 return NULL;
903}
904
905int ehea_sense_port_attr(struct ehea_port *port)
906{
907 int ret;
908 u64 hret;
909 struct hcp_ehea_port_cb0 *cb0;
910
508d2b5d
DM		 911 /* may be called via ehea_neq_tasklet() */
912 cb0 = kzalloc(PAGE_SIZE, GFP_ATOMIC);
913 if (!cb0) {
7a291083
JBT		 914 ehea_error("no mem for cb0");
915 ret = -ENOMEM;
916 goto out;
917 }
918
919 hret = ehea_h_query_ehea_port(port->adapter->handle,
920 port->logical_port_id, H_PORT_CB0,
921 EHEA_BMASK_SET(H_PORT_CB0_ALL, 0xFFFF),
922 cb0);
923 if (hret != H_SUCCESS) {
924 ret = -EIO;
925 goto out_free;
926 }
927
928 /* MAC address */
929 port->mac_addr = cb0->port_mac_addr << 16;
930
508d2b5d 931 if (!is_valid_ether_addr((u8 *)&port->mac_addr)) {
7a291083
JBT		 932 ret = -EADDRNOTAVAIL;
933 goto out_free;
934 }
935
936 /* Port speed */
937 switch (cb0->port_speed) {
938 case H_SPEED_10M_H:
939 port->port_speed = EHEA_SPEED_10M;
940 port->full_duplex = 0;
941 break;
942 case H_SPEED_10M_F:
943 port->port_speed = EHEA_SPEED_10M;
944 port->full_duplex = 1;
945 break;
946 case H_SPEED_100M_H:
947 port->port_speed = EHEA_SPEED_100M;
948 port->full_duplex = 0;
949 break;
950 case H_SPEED_100M_F:
951 port->port_speed = EHEA_SPEED_100M;
952 port->full_duplex = 1;
953 break;
954 case H_SPEED_1G_F:
955 port->port_speed = EHEA_SPEED_1G;
956 port->full_duplex = 1;
957 break;
958 case H_SPEED_10G_F:
959 port->port_speed = EHEA_SPEED_10G;
960 port->full_duplex = 1;
961 break;
962 default:
963 port->port_speed = 0;
964 port->full_duplex = 0;
965 break;
966 }
967
e919b593 968 port->autoneg = 1;
18604c54 969 port->num_mcs = cb0->num_default_qps;
e919b593 970
7a291083 971 /* Number of default QPs */
18604c54
JBT		 972 if (use_mcs)
973 port->num_def_qps = cb0->num_default_qps;
974 else
975 port->num_def_qps = 1;
7a291083
JBT		 976
977 if (!port->num_def_qps) {
978 ret = -EINVAL;
979 goto out_free;
980 }
981
18604c54
JBT		 982 port->num_tx_qps = num_tx_qps;
983
984 if (port->num_def_qps >= port->num_tx_qps)
7a291083
JBT		 985 port->num_add_tx_qps = 0;
986 else
18604c54 987 port->num_add_tx_qps = port->num_tx_qps - port->num_def_qps;
7a291083
JBT		 988
989 ret = 0;
990out_free:
991 if (ret || netif_msg_probe(port))
992 ehea_dump(cb0, sizeof(*cb0), "ehea_sense_port_attr");
993 kfree(cb0);
994out:
995 return ret;
996}
997
998int ehea_set_portspeed(struct ehea_port *port, u32 port_speed)
999{
1000 struct hcp_ehea_port_cb4 *cb4;
1001 u64 hret;
1002 int ret = 0;
1003
a1d261c5 1004 cb4 = kzalloc(PAGE_SIZE, GFP_KERNEL);
7a291083
JBT		 1005 if (!cb4) {
1006 ehea_error("no mem for cb4");
1007 ret = -ENOMEM;
1008 goto out;
1009 }
1010
1011 cb4->port_speed = port_speed;
1012
1013 netif_carrier_off(port->netdev);
1014
1015 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1016 port->logical_port_id,
1017 H_PORT_CB4, H_PORT_CB4_SPEED, cb4);
1018 if (hret == H_SUCCESS) {
1019 port->autoneg = port_speed == EHEA_SPEED_AUTONEG ? 1 : 0;
1020
1021 hret = ehea_h_query_ehea_port(port->adapter->handle,
1022 port->logical_port_id,
1023 H_PORT_CB4, H_PORT_CB4_SPEED,
1024 cb4);
1025 if (hret == H_SUCCESS) {
1026 switch (cb4->port_speed) {
1027 case H_SPEED_10M_H:
1028 port->port_speed = EHEA_SPEED_10M;
1029 port->full_duplex = 0;
1030 break;
1031 case H_SPEED_10M_F:
1032 port->port_speed = EHEA_SPEED_10M;
1033 port->full_duplex = 1;
1034 break;
1035 case H_SPEED_100M_H:
1036 port->port_speed = EHEA_SPEED_100M;
1037 port->full_duplex = 0;
1038 break;
1039 case H_SPEED_100M_F:
1040 port->port_speed = EHEA_SPEED_100M;
1041 port->full_duplex = 1;
1042 break;
1043 case H_SPEED_1G_F:
1044 port->port_speed = EHEA_SPEED_1G;
1045 port->full_duplex = 1;
1046 break;
1047 case H_SPEED_10G_F:
1048 port->port_speed = EHEA_SPEED_10G;
1049 port->full_duplex = 1;
1050 break;
1051 default:
1052 port->port_speed = 0;
1053 port->full_duplex = 0;
1054 break;
1055 }
1056 } else {
1057 ehea_error("Failed sensing port speed");
1058 ret = -EIO;
1059 }
1060 } else {
1061 if (hret == H_AUTHORITY) {
7674a588 1062 ehea_info("Hypervisor denied setting port speed");
7a291083
JBT		 1063 ret = -EPERM;
1064 } else {
1065 ret = -EIO;
1066 ehea_error("Failed setting port speed");
1067 }
1068 }
8759cf76
JBT		 1069 if (!prop_carrier_state || (port->phy_link == EHEA_PHY_LINK_UP))
1070 netif_carrier_on(port->netdev);
1071
7a291083
JBT		 1072 kfree(cb4);
1073out:
1074 return ret;
1075}
1076
1077static void ehea_parse_eqe(struct ehea_adapter *adapter, u64 eqe)
1078{
1079 int ret;
1080 u8 ec;
1081 u8 portnum;
1082 struct ehea_port *port;
1083
1084 ec = EHEA_BMASK_GET(NEQE_EVENT_CODE, eqe);
1085 portnum = EHEA_BMASK_GET(NEQE_PORTNUM, eqe);
1086 port = ehea_get_port(adapter, portnum);
1087
1088 switch (ec) {
1089 case EHEA_EC_PORTSTATE_CHG: /* port state change */
1090
1091 if (!port) {
1092 ehea_error("unknown portnum %x", portnum);
1093 break;
1094 }
1095
1096 if (EHEA_BMASK_GET(NEQE_PORT_UP, eqe)) {
1097 if (!netif_carrier_ok(port->netdev)) {
1e1675cc 1098 ret = ehea_sense_port_attr(port);
7a291083
JBT		 1099 if (ret) {
1100 ehea_error("failed resensing port "
1101 "attributes");
1102 break;
1103 }
1104
1105 if (netif_msg_link(port))
1106 ehea_info("%s: Logical port up: %dMbps "
1107 "%s Duplex",
1108 port->netdev->name,
1109 port->port_speed,
1110 port->full_duplex ==
1111 1 ? "Full" : "Half");
1112
1113 netif_carrier_on(port->netdev);
1114 netif_wake_queue(port->netdev);
1115 }
1116 } else
1117 if (netif_carrier_ok(port->netdev)) {
1118 if (netif_msg_link(port))
1119 ehea_info("%s: Logical port down",
1120 port->netdev->name);
1121 netif_carrier_off(port->netdev);
1122 netif_stop_queue(port->netdev);
1123 }
1124
1125 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PORT_UP, eqe)) {
8759cf76 1126 port->phy_link = EHEA_PHY_LINK_UP;
7a291083
JBT		 1127 if (netif_msg_link(port))
1128 ehea_info("%s: Physical port up",
1129 port->netdev->name);
8759cf76
JBT		 1130 if (prop_carrier_state)
1131 netif_carrier_on(port->netdev);
7a291083 1132 } else {
8759cf76 1133 port->phy_link = EHEA_PHY_LINK_DOWN;
7a291083
JBT		 1134 if (netif_msg_link(port))
1135 ehea_info("%s: Physical port down",
1136 port->netdev->name);
8759cf76
JBT		 1137 if (prop_carrier_state)
1138 netif_carrier_off(port->netdev);
7a291083
JBT		 1139 }
1140
1141 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PRIMARY, eqe))
1142 ehea_info("External switch port is primary port");
1143 else
1144 ehea_info("External switch port is backup port");
1145
1146 break;
1147 case EHEA_EC_ADAPTER_MALFUNC:
1148 ehea_error("Adapter malfunction");
1149 break;
1150 case EHEA_EC_PORT_MALFUNC:
1151 ehea_info("Port malfunction: Device: %s", port->netdev->name);
1152 netif_carrier_off(port->netdev);
1153 netif_stop_queue(port->netdev);
1154 break;
1155 default:
bff0a55f 1156 ehea_error("unknown event code %x, eqe=0x%lX", ec, eqe);
7a291083
JBT		 1157 break;
1158 }
1159}
1160
1161static void ehea_neq_tasklet(unsigned long data)
1162{
508d2b5d 1163 struct ehea_adapter *adapter = (struct ehea_adapter *)data;
7a291083
JBT		 1164 struct ehea_eqe *eqe;
1165 u64 event_mask;
1166
1167 eqe = ehea_poll_eq(adapter->neq);
1168 ehea_debug("eqe=%p", eqe);
1169
1170 while (eqe) {
1171 ehea_debug("*eqe=%lx", eqe->entry);
1172 ehea_parse_eqe(adapter, eqe->entry);
1173 eqe = ehea_poll_eq(adapter->neq);
1174 ehea_debug("next eqe=%p", eqe);
1175 }
1176
1177 event_mask = EHEA_BMASK_SET(NELR_PORTSTATE_CHG, 1)
1178 | EHEA_BMASK_SET(NELR_ADAPTER_MALFUNC, 1)
1179 | EHEA_BMASK_SET(NELR_PORT_MALFUNC, 1);
1180
1181 ehea_h_reset_events(adapter->handle,
1182 adapter->neq->fw_handle, event_mask);
1183}
1184
7d12e780 1185static irqreturn_t ehea_interrupt_neq(int irq, void *param)
7a291083
JBT		 1186{
1187 struct ehea_adapter *adapter = param;
1188 tasklet_hi_schedule(&adapter->neq_tasklet);
1189 return IRQ_HANDLED;
1190}
1191
1192
1193static int ehea_fill_port_res(struct ehea_port_res *pr)
1194{
1195 int ret;
1196 struct ehea_qp_init_attr *init_attr = &pr->qp->init_attr;
1197
1198 ret = ehea_init_fill_rq1(pr, init_attr->act_nr_rwqes_rq1
1199 - init_attr->act_nr_rwqes_rq2
1200 - init_attr->act_nr_rwqes_rq3 - 1);
1201
1202 ret |= ehea_refill_rq2(pr, init_attr->act_nr_rwqes_rq2 - 1);
1203
1204 ret |= ehea_refill_rq3(pr, init_attr->act_nr_rwqes_rq3 - 1);
1205
1206 return ret;
1207}
1208
1209static int ehea_reg_interrupts(struct net_device *dev)
1210{
1211 struct ehea_port *port = netdev_priv(dev);
1212 struct ehea_port_res *pr;
1213 int i, ret;
1214
7a291083
JBT		 1215
1216 snprintf(port->int_aff_name, EHEA_IRQ_NAME_SIZE - 1, "%s-aff",
1217 dev->name);
1218
6b08f3ae 1219 ret = ibmebus_request_irq(port->qp_eq->attr.ist1,
7a291083 1220 ehea_qp_aff_irq_handler,
38515e90 1221 IRQF_DISABLED, port->int_aff_name, port);
7a291083
JBT		 1222 if (ret) {
1223 ehea_error("failed registering irq for qp_aff_irq_handler:"
1224 "ist=%X", port->qp_eq->attr.ist1);
1225 goto out_free_qpeq;
1226 }
1227
1228 if (netif_msg_ifup(port))
1229 ehea_info("irq_handle 0x%X for function qp_aff_irq_handler "
1230 "registered", port->qp_eq->attr.ist1);
1231
18604c54 1232
7a291083
JBT		 1233 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
1234 pr = &port->port_res[i];
1235 snprintf(pr->int_send_name, EHEA_IRQ_NAME_SIZE - 1,
18604c54 1236 "%s-queue%d", dev->name, i);
6b08f3ae 1237 ret = ibmebus_request_irq(pr->eq->attr.ist1,
18604c54 1238 ehea_recv_irq_handler,
38515e90 1239 IRQF_DISABLED, pr->int_send_name,
7a291083
JBT		 1240 pr);
1241 if (ret) {
18604c54 1242 ehea_error("failed registering irq for ehea_queue "
7a291083 1243 "port_res_nr:%d, ist=%X", i,
18604c54 1244 pr->eq->attr.ist1);
7a291083
JBT		 1245 goto out_free_req;
1246 }
1247 if (netif_msg_ifup(port))
18604c54
JBT		 1248 ehea_info("irq_handle 0x%X for function ehea_queue_int "
1249 "%d registered", pr->eq->attr.ist1, i);
7a291083
JBT		 1250 }
1251out:
1252 return ret;
1253
18604c54 1254
7a291083
JBT		 1255out_free_req:
1256 while (--i >= 0) {
18604c54 1257 u32 ist = port->port_res[i].eq->attr.ist1;
6b08f3ae 1258 ibmebus_free_irq(ist, &port->port_res[i]);
7a291083 1259 }
18604c54 1260
7a291083 1261out_free_qpeq:
6b08f3ae 1262 ibmebus_free_irq(port->qp_eq->attr.ist1, port);
7a291083 1263 i = port->num_def_qps;
18604c54 1264
7a291083 1265 goto out;
18604c54 1266
7a291083
JBT		 1267}
1268
1269static void ehea_free_interrupts(struct net_device *dev)
1270{
1271 struct ehea_port *port = netdev_priv(dev);
1272 struct ehea_port_res *pr;
1273 int i;
1274
1275 /* send */
18604c54 1276
7a291083
JBT		 1277 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
1278 pr = &port->port_res[i];
6b08f3ae 1279 ibmebus_free_irq(pr->eq->attr.ist1, pr);
7a291083
JBT		 1280 if (netif_msg_intr(port))
1281 ehea_info("free send irq for res %d with handle 0x%X",
18604c54 1282 i, pr->eq->attr.ist1);
7a291083
JBT		 1283 }
1284
1285 /* associated events */
6b08f3ae 1286 ibmebus_free_irq(port->qp_eq->attr.ist1, port);
7a291083
JBT		 1287 if (netif_msg_intr(port))
1288 ehea_info("associated event interrupt for handle 0x%X freed",
1289 port->qp_eq->attr.ist1);
1290}
1291
1292static int ehea_configure_port(struct ehea_port *port)
1293{
1294 int ret, i;
1295 u64 hret, mask;
1296 struct hcp_ehea_port_cb0 *cb0;
1297
1298 ret = -ENOMEM;
a1d261c5 1299 cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL);
7a291083
JBT		 1300 if (!cb0)
1301 goto out;
1302
1303 cb0->port_rc = EHEA_BMASK_SET(PXLY_RC_VALID, 1)
1304 | EHEA_BMASK_SET(PXLY_RC_IP_CHKSUM, 1)
1305 | EHEA_BMASK_SET(PXLY_RC_TCP_UDP_CHKSUM, 1)
1306 | EHEA_BMASK_SET(PXLY_RC_VLAN_XTRACT, 1)
1307 | EHEA_BMASK_SET(PXLY_RC_VLAN_TAG_FILTER,
1308 PXLY_RC_VLAN_FILTER)
1309 | EHEA_BMASK_SET(PXLY_RC_JUMBO_FRAME, 1);
1310
18604c54
JBT		 1311 for (i = 0; i < port->num_mcs; i++)
1312 if (use_mcs)
1313 cb0->default_qpn_arr[i] =
1314 port->port_res[i].qp->init_attr.qp_nr;
1315 else
1316 cb0->default_qpn_arr[i] =
1317 port->port_res[0].qp->init_attr.qp_nr;
e542aa6b 1318
7a291083
JBT		 1319 if (netif_msg_ifup(port))
1320 ehea_dump(cb0, sizeof(*cb0), "ehea_configure_port");
1321
1322 mask = EHEA_BMASK_SET(H_PORT_CB0_PRC, 1)
1323 | EHEA_BMASK_SET(H_PORT_CB0_DEFQPNARRAY, 1);
1324
1325 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1326 port->logical_port_id,
1327 H_PORT_CB0, mask, cb0);
1328 ret = -EIO;
1329 if (hret != H_SUCCESS)
1330 goto out_free;
1331
1332 ret = 0;
1333
1334out_free:
1335 kfree(cb0);
1336out:
1337 return ret;
1338}
1339
e542aa6b 1340int ehea_gen_smrs(struct ehea_port_res *pr)
7a291083 1341{
e542aa6b 1342 int ret;
7a291083
JBT		 1343 struct ehea_adapter *adapter = pr->port->adapter;
1344
e542aa6b
JBT		 1345 ret = ehea_gen_smr(adapter, &adapter->mr, &pr->send_mr);
1346 if (ret)
7a291083
JBT		 1347 goto out;
1348
e542aa6b
JBT		 1349 ret = ehea_gen_smr(adapter, &adapter->mr, &pr->recv_mr);
1350 if (ret)
1351 goto out_free;
7a291083
JBT		 1352
1353 return 0;
1354
e542aa6b
JBT		 1355out_free:
1356 ehea_rem_mr(&pr->send_mr);
7a291083 1357out:
e542aa6b 1358 ehea_error("Generating SMRS failed\n");
7a291083
JBT		 1359 return -EIO;
1360}
1361
e542aa6b 1362int ehea_rem_smrs(struct ehea_port_res *pr)
7a291083 1363{
e542aa6b
JBT		 1364 if ((ehea_rem_mr(&pr->send_mr))
1365 || (ehea_rem_mr(&pr->recv_mr)))
1366 return -EIO;
1367 else
1368 return 0;
7a291083
JBT		 1369}
1370
1371static int ehea_init_q_skba(struct ehea_q_skb_arr *q_skba, int max_q_entries)
1372{
508d2b5d 1373 int arr_size = sizeof(void *) * max_q_entries;
7a291083
JBT		 1374
1375 q_skba->arr = vmalloc(arr_size);
1376 if (!q_skba->arr)
1377 return -ENOMEM;
1378
1379 memset(q_skba->arr, 0, arr_size);
1380
1381 q_skba->len = max_q_entries;
1382 q_skba->index = 0;
1383 q_skba->os_skbs = 0;
1384
1385 return 0;
1386}
1387
1388static int ehea_init_port_res(struct ehea_port *port, struct ehea_port_res *pr,
1389 struct port_res_cfg *pr_cfg, int queue_token)
1390{
1391 struct ehea_adapter *adapter = port->adapter;
1392 enum ehea_eq_type eq_type = EHEA_EQ;
1393 struct ehea_qp_init_attr *init_attr = NULL;
1394 int ret = -EIO;
1395
1396 memset(pr, 0, sizeof(struct ehea_port_res));
1397
1398 pr->port = port;
7a291083
JBT		 1399 spin_lock_init(&pr->xmit_lock);
1400 spin_lock_init(&pr->netif_queue);
1401
18604c54
JBT		 1402 pr->eq = ehea_create_eq(adapter, eq_type, EHEA_MAX_ENTRIES_EQ, 0);
1403 if (!pr->eq) {
1404 ehea_error("create_eq failed (eq)");
7a291083
JBT		 1405 goto out_free;
1406 }
1407
1408 pr->recv_cq = ehea_create_cq(adapter, pr_cfg->max_entries_rcq,
18604c54 1409 pr->eq->fw_handle,
7a291083
JBT		 1410 port->logical_port_id);
1411 if (!pr->recv_cq) {
1412 ehea_error("create_cq failed (cq_recv)");
1413 goto out_free;
1414 }
1415
1416 pr->send_cq = ehea_create_cq(adapter, pr_cfg->max_entries_scq,
18604c54 1417 pr->eq->fw_handle,
7a291083
JBT		 1418 port->logical_port_id);
1419 if (!pr->send_cq) {
1420 ehea_error("create_cq failed (cq_send)");
1421 goto out_free;
1422 }
1423
1424 if (netif_msg_ifup(port))
1425 ehea_info("Send CQ: act_nr_cqes=%d, Recv CQ: act_nr_cqes=%d",
1426 pr->send_cq->attr.act_nr_of_cqes,
1427 pr->recv_cq->attr.act_nr_of_cqes);
1428
1429 init_attr = kzalloc(sizeof(*init_attr), GFP_KERNEL);
1430 if (!init_attr) {
1431 ret = -ENOMEM;
1432 ehea_error("no mem for ehea_qp_init_attr");
1433 goto out_free;
1434 }
1435
1436 init_attr->low_lat_rq1 = 1;
1437 init_attr->signalingtype = 1; /* generate CQE if specified in WQE */
1438 init_attr->rq_count = 3;
1439 init_attr->qp_token = queue_token;
1440 init_attr->max_nr_send_wqes = pr_cfg->max_entries_sq;
1441 init_attr->max_nr_rwqes_rq1 = pr_cfg->max_entries_rq1;
1442 init_attr->max_nr_rwqes_rq2 = pr_cfg->max_entries_rq2;
1443 init_attr->max_nr_rwqes_rq3 = pr_cfg->max_entries_rq3;
1444 init_attr->wqe_size_enc_sq = EHEA_SG_SQ;
1445 init_attr->wqe_size_enc_rq1 = EHEA_SG_RQ1;
1446 init_attr->wqe_size_enc_rq2 = EHEA_SG_RQ2;
1447 init_attr->wqe_size_enc_rq3 = EHEA_SG_RQ3;
1448 init_attr->rq2_threshold = EHEA_RQ2_THRESHOLD;
1449 init_attr->rq3_threshold = EHEA_RQ3_THRESHOLD;
1450 init_attr->port_nr = port->logical_port_id;
1451 init_attr->send_cq_handle = pr->send_cq->fw_handle;
1452 init_attr->recv_cq_handle = pr->recv_cq->fw_handle;
1453 init_attr->aff_eq_handle = port->qp_eq->fw_handle;
1454
1455 pr->qp = ehea_create_qp(adapter, adapter->pd, init_attr);
1456 if (!pr->qp) {
1457 ehea_error("create_qp failed");
1458 ret = -EIO;
1459 goto out_free;
1460 }
1461
1462 if (netif_msg_ifup(port))
1463 ehea_info("QP: qp_nr=%d\n act_nr_snd_wqe=%d\n nr_rwqe_rq1=%d\n "
1464 "nr_rwqe_rq2=%d\n nr_rwqe_rq3=%d", init_attr->qp_nr,
1465 init_attr->act_nr_send_wqes,
1466 init_attr->act_nr_rwqes_rq1,
1467 init_attr->act_nr_rwqes_rq2,
1468 init_attr->act_nr_rwqes_rq3);
1469
44fb3126
TK		 1470 pr->sq_skba_size = init_attr->act_nr_send_wqes + 1;
1471
1472 ret = ehea_init_q_skba(&pr->sq_skba, pr->sq_skba_size);
7a291083
JBT		 1473 ret |= ehea_init_q_skba(&pr->rq1_skba, init_attr->act_nr_rwqes_rq1 + 1);
1474 ret |= ehea_init_q_skba(&pr->rq2_skba, init_attr->act_nr_rwqes_rq2 + 1);
1475 ret |= ehea_init_q_skba(&pr->rq3_skba, init_attr->act_nr_rwqes_rq3 + 1);
1476 if (ret)
1477 goto out_free;
1478
1479 pr->swqe_refill_th = init_attr->act_nr_send_wqes / 10;
1480 if (ehea_gen_smrs(pr) != 0) {
1481 ret = -EIO;
1482 goto out_free;
1483 }
18604c54 1484
7a291083
JBT		 1485 atomic_set(&pr->swqe_avail, init_attr->act_nr_send_wqes - 1);
1486
1487 kfree(init_attr);
18604c54 1488
bea3348e 1489 netif_napi_add(pr->port->netdev, &pr->napi, ehea_poll, 64);
18604c54 1490
d4dc4ec9
JBT		 1491 pr->lro_mgr.max_aggr = pr->port->lro_max_aggr;
1492 pr->lro_mgr.max_desc = MAX_LRO_DESCRIPTORS;
1493 pr->lro_mgr.lro_arr = pr->lro_desc;
1494 pr->lro_mgr.get_skb_header = get_skb_hdr;
1495 pr->lro_mgr.features = LRO_F_NAPI | LRO_F_EXTRACT_VLAN_ID;
1496 pr->lro_mgr.dev = port->netdev;
1497 pr->lro_mgr.ip_summed = CHECKSUM_UNNECESSARY;
1498 pr->lro_mgr.ip_summed_aggr = CHECKSUM_UNNECESSARY;
1499
7a291083
JBT		 1500 ret = 0;
1501 goto out;
1502
1503out_free:
1504 kfree(init_attr);
1505 vfree(pr->sq_skba.arr);
1506 vfree(pr->rq1_skba.arr);
1507 vfree(pr->rq2_skba.arr);
1508 vfree(pr->rq3_skba.arr);
1509 ehea_destroy_qp(pr->qp);
1510 ehea_destroy_cq(pr->send_cq);
1511 ehea_destroy_cq(pr->recv_cq);
18604c54 1512 ehea_destroy_eq(pr->eq);
7a291083
JBT		 1513out:
1514 return ret;
1515}
1516
1517static int ehea_clean_portres(struct ehea_port *port, struct ehea_port_res *pr)
1518{
1519 int ret, i;
1520
1521 ret = ehea_destroy_qp(pr->qp);
1522
1523 if (!ret) {
1524 ehea_destroy_cq(pr->send_cq);
1525 ehea_destroy_cq(pr->recv_cq);
18604c54 1526 ehea_destroy_eq(pr->eq);
7a291083
JBT		 1527
1528 for (i = 0; i < pr->rq1_skba.len; i++)
1529 if (pr->rq1_skba.arr[i])
1530 dev_kfree_skb(pr->rq1_skba.arr[i]);
1531
1532 for (i = 0; i < pr->rq2_skba.len; i++)
1533 if (pr->rq2_skba.arr[i])
1534 dev_kfree_skb(pr->rq2_skba.arr[i]);
1535
1536 for (i = 0; i < pr->rq3_skba.len; i++)
1537 if (pr->rq3_skba.arr[i])
1538 dev_kfree_skb(pr->rq3_skba.arr[i]);
1539
1540 for (i = 0; i < pr->sq_skba.len; i++)
1541 if (pr->sq_skba.arr[i])
1542 dev_kfree_skb(pr->sq_skba.arr[i]);
1543
1544 vfree(pr->rq1_skba.arr);
1545 vfree(pr->rq2_skba.arr);
1546 vfree(pr->rq3_skba.arr);
1547 vfree(pr->sq_skba.arr);
1548 ret = ehea_rem_smrs(pr);
1549 }
1550 return ret;
1551}
1552
1553/*
1554 * The write_* functions store information in swqe which is used by
1555 * the hardware to calculate the ip/tcp/udp checksum
1556 */
1557
1558static inline void write_ip_start_end(struct ehea_swqe *swqe,
1559 const struct sk_buff *skb)
1560{
eddc9ec5 1561 swqe->ip_start = skb_network_offset(skb);
c9bdd4b5 1562 swqe->ip_end = (u8)(swqe->ip_start + ip_hdrlen(skb) - 1);
7a291083
JBT		 1563}
1564
1565static inline void write_tcp_offset_end(struct ehea_swqe *swqe,
1566 const struct sk_buff *skb)
1567{
1568 swqe->tcp_offset =
1569 (u8)(swqe->ip_end + 1 + offsetof(struct tcphdr, check));
1570
1571 swqe->tcp_end = (u16)skb->len - 1;
1572}
1573
1574static inline void write_udp_offset_end(struct ehea_swqe *swqe,
1575 const struct sk_buff *skb)
1576{
1577 swqe->tcp_offset =
1578 (u8)(swqe->ip_end + 1 + offsetof(struct udphdr, check));
1579
1580 swqe->tcp_end = (u16)skb->len - 1;
1581}
1582
1583
1584static void write_swqe2_TSO(struct sk_buff *skb,
1585 struct ehea_swqe *swqe, u32 lkey)
1586{
1587 struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry;
1588 u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0];
1589 int skb_data_size = skb->len - skb->data_len;
1590 int headersize;
7a291083
JBT		 1591
1592 /* Packet is TCP with TSO enabled */
1593 swqe->tx_control |= EHEA_SWQE_TSO;
1594 swqe->mss = skb_shinfo(skb)->gso_size;
1595 /* copy only eth/ip/tcp headers to immediate data and
1596 * the rest of skb->data to sg1entry
1597 */
ab6a5bb6 1598 headersize = ETH_HLEN + ip_hdrlen(skb) + tcp_hdrlen(skb);
7a291083
JBT		 1599
1600 skb_data_size = skb->len - skb->data_len;
1601
1602 if (skb_data_size >= headersize) {
1603 /* copy immediate data */
d626f62b 1604 skb_copy_from_linear_data(skb, imm_data, headersize);
7a291083
JBT		 1605 swqe->immediate_data_length = headersize;
1606
1607 if (skb_data_size > headersize) {
1608 /* set sg1entry data */
1609 sg1entry->l_key = lkey;
1610 sg1entry->len = skb_data_size - headersize;
44a5b3d5
TK		 1611 sg1entry->vaddr =
1612 ehea_map_vaddr(skb->data + headersize);
7a291083
JBT		 1613 swqe->descriptors++;
1614 }
1615 } else
1616 ehea_error("cannot handle fragmented headers");
1617}
1618
1619static void write_swqe2_nonTSO(struct sk_buff *skb,
1620 struct ehea_swqe *swqe, u32 lkey)
1621{
1622 int skb_data_size = skb->len - skb->data_len;
1623 u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0];
1624 struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry;
7a291083
JBT		 1625
1626 /* Packet is any nonTSO type
1627 *
1628 * Copy as much as possible skb->data to immediate data and
1629 * the rest to sg1entry
1630 */
1631 if (skb_data_size >= SWQE2_MAX_IMM) {
1632 /* copy immediate data */
d626f62b 1633 skb_copy_from_linear_data(skb, imm_data, SWQE2_MAX_IMM);
7a291083
JBT		 1634
1635 swqe->immediate_data_length = SWQE2_MAX_IMM;
1636
1637 if (skb_data_size > SWQE2_MAX_IMM) {
1638 /* copy sg1entry data */
1639 sg1entry->l_key = lkey;
1640 sg1entry->len = skb_data_size - SWQE2_MAX_IMM;
44a5b3d5
TK		 1641 sg1entry->vaddr =
1642 ehea_map_vaddr(skb->data + SWQE2_MAX_IMM);
7a291083
JBT		 1643 swqe->descriptors++;
1644 }
1645 } else {
d626f62b 1646 skb_copy_from_linear_data(skb, imm_data, skb_data_size);
7a291083
JBT		 1647 swqe->immediate_data_length = skb_data_size;
1648 }
1649}
1650
1651static inline void write_swqe2_data(struct sk_buff *skb, struct net_device *dev,
1652 struct ehea_swqe *swqe, u32 lkey)
1653{
1654 struct ehea_vsgentry *sg_list, *sg1entry, *sgentry;
1655 skb_frag_t *frag;
1656 int nfrags, sg1entry_contains_frag_data, i;
7a291083
JBT		 1657
1658 nfrags = skb_shinfo(skb)->nr_frags;
1659 sg1entry = &swqe->u.immdata_desc.sg_entry;
508d2b5d 1660 sg_list = (struct ehea_vsgentry *)&swqe->u.immdata_desc.sg_list;
7a291083
JBT		 1661 swqe->descriptors = 0;
1662 sg1entry_contains_frag_data = 0;
1663
1664 if ((dev->features & NETIF_F_TSO) && skb_shinfo(skb)->gso_size)
1665 write_swqe2_TSO(skb, swqe, lkey);
1666 else
1667 write_swqe2_nonTSO(skb, swqe, lkey);
1668
1669 /* write descriptors */
1670 if (nfrags > 0) {
1671 if (swqe->descriptors == 0) {
1672 /* sg1entry not yet used */
1673 frag = &skb_shinfo(skb)->frags[0];
1674
1675 /* copy sg1entry data */
1676 sg1entry->l_key = lkey;
1677 sg1entry->len = frag->size;
44a5b3d5
TK		 1678 sg1entry->vaddr =
1679 ehea_map_vaddr(page_address(frag->page)
1680 + frag->page_offset);
7a291083
JBT		 1681 swqe->descriptors++;
1682 sg1entry_contains_frag_data = 1;
1683 }
1684
1685 for (i = sg1entry_contains_frag_data; i < nfrags; i++) {
1686
1687 frag = &skb_shinfo(skb)->frags[i];
1688 sgentry = &sg_list[i - sg1entry_contains_frag_data];
1689
1690 sgentry->l_key = lkey;
1691 sgentry->len = frag->size;
44a5b3d5
TK		 1692 sgentry->vaddr =
1693 ehea_map_vaddr(page_address(frag->page)
1694 + frag->page_offset);
7a291083
JBT		 1695 swqe->descriptors++;
1696 }
1697 }
1698}
1699
1700static int ehea_broadcast_reg_helper(struct ehea_port *port, u32 hcallid)
1701{
1702 int ret = 0;
1703 u64 hret;
1704 u8 reg_type;
1705
1706 /* De/Register untagged packets */
1707 reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_UNTAGGED;
1708 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1709 port->logical_port_id,
1710 reg_type, port->mac_addr, 0, hcallid);
1711 if (hret != H_SUCCESS) {
f9e29228 1712 ehea_error("%sregistering bc address failed (tagged)",
508d2b5d 1713 hcallid == H_REG_BCMC ? "" : "de");
7a291083
JBT		 1714 ret = -EIO;
1715 goto out_herr;
1716 }
1717
1718 /* De/Register VLAN packets */
1719 reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_VLANID_ALL;
1720 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1721 port->logical_port_id,
1722 reg_type, port->mac_addr, 0, hcallid);
1723 if (hret != H_SUCCESS) {
f9e29228
TK		 1724 ehea_error("%sregistering bc address failed (vlan)",
1725 hcallid == H_REG_BCMC ? "" : "de");
7a291083
JBT		 1726 ret = -EIO;
1727 }
1728out_herr:
1729 return ret;
1730}
1731
1732static int ehea_set_mac_addr(struct net_device *dev, void *sa)
1733{
1734 struct ehea_port *port = netdev_priv(dev);
1735 struct sockaddr *mac_addr = sa;
1736 struct hcp_ehea_port_cb0 *cb0;
1737 int ret;
1738 u64 hret;
1739
1740 if (!is_valid_ether_addr(mac_addr->sa_data)) {
1741 ret = -EADDRNOTAVAIL;
1742 goto out;
1743 }
1744
a1d261c5 1745 cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL);
7a291083
JBT		 1746 if (!cb0) {
1747 ehea_error("no mem for cb0");
1748 ret = -ENOMEM;
1749 goto out;
1750 }
1751
1752 memcpy(&(cb0->port_mac_addr), &(mac_addr->sa_data[0]), ETH_ALEN);
1753
1754 cb0->port_mac_addr = cb0->port_mac_addr >> 16;
1755
1756 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1757 port->logical_port_id, H_PORT_CB0,
1758 EHEA_BMASK_SET(H_PORT_CB0_MAC, 1), cb0);
1759 if (hret != H_SUCCESS) {
1760 ret = -EIO;
1761 goto out_free;
1762 }
1763
1764 memcpy(dev->dev_addr, mac_addr->sa_data, dev->addr_len);
1765
da59cde4 1766 mutex_lock(&ehea_bcmc_regs.lock);
21eee2dd 1767
7a291083
JBT		 1768 /* Deregister old MAC in pHYP */
1769 ret = ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
1770 if (ret)
21eee2dd 1771 goto out_upregs;
7a291083
JBT		 1772
1773 port->mac_addr = cb0->port_mac_addr << 16;
1774
1775 /* Register new MAC in pHYP */
1776 ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
1777 if (ret)
21eee2dd 1778 goto out_upregs;
7a291083
JBT		 1779
1780 ret = 0;
21eee2dd
TK		 1781
1782out_upregs:
1783 ehea_update_bcmc_registrations();
da59cde4 1784 mutex_unlock(&ehea_bcmc_regs.lock);
7a291083
JBT		 1785out_free:
1786 kfree(cb0);
1787out:
1788 return ret;
1789}
1790
1791static void ehea_promiscuous_error(u64 hret, int enable)
1792{
7674a588
TK		 1793 if (hret == H_AUTHORITY)
1794 ehea_info("Hypervisor denied %sabling promiscuous mode",
1795 enable == 1 ? "en" : "dis");
1796 else
1797 ehea_error("failed %sabling promiscuous mode",
1798 enable == 1 ? "en" : "dis");
7a291083
JBT		 1799}
1800
1801static void ehea_promiscuous(struct net_device *dev, int enable)
1802{
1803 struct ehea_port *port = netdev_priv(dev);
1804 struct hcp_ehea_port_cb7 *cb7;
1805 u64 hret;
1806
1807 if ((enable && port->promisc) || (!enable && !port->promisc))
1808 return;
1809
a1d261c5 1810 cb7 = kzalloc(PAGE_SIZE, GFP_ATOMIC);
7a291083
JBT		 1811 if (!cb7) {
1812 ehea_error("no mem for cb7");
1813 goto out;
1814 }
1815
1816 /* Modify Pxs_DUCQPN in CB7 */
1817 cb7->def_uc_qpn = enable == 1 ? port->port_res[0].qp->fw_handle : 0;
1818
1819 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1820 port->logical_port_id,
1821 H_PORT_CB7, H_PORT_CB7_DUCQPN, cb7);
1822 if (hret) {
1823 ehea_promiscuous_error(hret, enable);
1824 goto out;
1825 }
1826
1827 port->promisc = enable;
1828out:
1829 kfree(cb7);
1830 return;
1831}
1832
1833static u64 ehea_multicast_reg_helper(struct ehea_port *port, u64 mc_mac_addr,
1834 u32 hcallid)
1835{
1836 u64 hret;
1837 u8 reg_type;
1838
1839 reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST
1840 | EHEA_BCMC_UNTAGGED;
1841
1842 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1843 port->logical_port_id,
1844 reg_type, mc_mac_addr, 0, hcallid);
1845 if (hret)
1846 goto out;
1847
1848 reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST
1849 | EHEA_BCMC_VLANID_ALL;
1850
1851 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1852 port->logical_port_id,
1853 reg_type, mc_mac_addr, 0, hcallid);
1854out:
1855 return hret;
1856}
1857
1858static int ehea_drop_multicast_list(struct net_device *dev)
1859{
1860 struct ehea_port *port = netdev_priv(dev);
1861 struct ehea_mc_list *mc_entry = port->mc_list;
1862 struct list_head *pos;
1863 struct list_head *temp;
1864 int ret = 0;
1865 u64 hret;
1866
1867 list_for_each_safe(pos, temp, &(port->mc_list->list)) {
1868 mc_entry = list_entry(pos, struct ehea_mc_list, list);
1869
1870 hret = ehea_multicast_reg_helper(port, mc_entry->macaddr,
1871 H_DEREG_BCMC);
1872 if (hret) {
1873 ehea_error("failed deregistering mcast MAC");
1874 ret = -EIO;
1875 }
1876
1877 list_del(pos);
1878 kfree(mc_entry);
1879 }
1880 return ret;
1881}
1882
1883static void ehea_allmulti(struct net_device *dev, int enable)
1884{
1885 struct ehea_port *port = netdev_priv(dev);
1886 u64 hret;
1887
1888 if (!port->allmulti) {
1889 if (enable) {
1890 /* Enable ALLMULTI */
1891 ehea_drop_multicast_list(dev);
1892 hret = ehea_multicast_reg_helper(port, 0, H_REG_BCMC);
1893 if (!hret)
1894 port->allmulti = 1;
1895 else
1896 ehea_error("failed enabling IFF_ALLMULTI");
1897 }
1898 } else
1899 if (!enable) {
1900 /* Disable ALLMULTI */
1901 hret = ehea_multicast_reg_helper(port, 0, H_DEREG_BCMC);
1902 if (!hret)
1903 port->allmulti = 0;
1904 else
1905 ehea_error("failed disabling IFF_ALLMULTI");
1906 }
1907}
1908
508d2b5d 1909static void ehea_add_multicast_entry(struct ehea_port *port, u8 *mc_mac_addr)
7a291083
JBT		 1910{
1911 struct ehea_mc_list *ehea_mcl_entry;
1912 u64 hret;
1913
1e1675cc 1914 ehea_mcl_entry = kzalloc(sizeof(*ehea_mcl_entry), GFP_ATOMIC);
7a291083
JBT		 1915 if (!ehea_mcl_entry) {
1916 ehea_error("no mem for mcl_entry");
1917 return;
1918 }
1919
1920 INIT_LIST_HEAD(&ehea_mcl_entry->list);
1921
1922 memcpy(&ehea_mcl_entry->macaddr, mc_mac_addr, ETH_ALEN);
1923
1924 hret = ehea_multicast_reg_helper(port, ehea_mcl_entry->macaddr,
1925 H_REG_BCMC);
1926 if (!hret)
1927 list_add(&ehea_mcl_entry->list, &port->mc_list->list);
1928 else {
1929 ehea_error("failed registering mcast MAC");
1930 kfree(ehea_mcl_entry);
1931 }
1932}
1933
1934static void ehea_set_multicast_list(struct net_device *dev)
1935{
1936 struct ehea_port *port = netdev_priv(dev);
1937 struct dev_mc_list *k_mcl_entry;
1938 int ret, i;
1939
1940 if (dev->flags & IFF_PROMISC) {
1941 ehea_promiscuous(dev, 1);
1942 return;
1943 }
1944 ehea_promiscuous(dev, 0);
1945
da59cde4 1946 mutex_lock(&ehea_bcmc_regs.lock);
21eee2dd 1947
7a291083
JBT		 1948 if (dev->flags & IFF_ALLMULTI) {
1949 ehea_allmulti(dev, 1);
21eee2dd 1950 goto out;
7a291083
JBT		 1951 }
1952 ehea_allmulti(dev, 0);
1953
1954 if (dev->mc_count) {
1955 ret = ehea_drop_multicast_list(dev);
1956 if (ret) {
1957 /* Dropping the current multicast list failed.
1958 * Enabling ALL_MULTI is the best we can do.
1959 */
1960 ehea_allmulti(dev, 1);
1961 }
1962
1963 if (dev->mc_count > port->adapter->max_mc_mac) {
1964 ehea_info("Mcast registration limit reached (0x%lx). "
1965 "Use ALLMULTI!",
1966 port->adapter->max_mc_mac);
1967 goto out;
1968 }
1969
508d2b5d
DM		 1970 for (i = 0, k_mcl_entry = dev->mc_list; i < dev->mc_count; i++,
1971 k_mcl_entry = k_mcl_entry->next)
7a291083 1972 ehea_add_multicast_entry(port, k_mcl_entry->dmi_addr);
508d2b5d 1973
7a291083
JBT		 1974 }
1975out:
21eee2dd 1976 ehea_update_bcmc_registrations();
da59cde4 1977 mutex_unlock(&ehea_bcmc_regs.lock);
7a291083
JBT		 1978 return;
1979}
1980
1981static int ehea_change_mtu(struct net_device *dev, int new_mtu)
1982{
1983 if ((new_mtu < 68) || (new_mtu > EHEA_MAX_PACKET_SIZE))
1984 return -EINVAL;
1985 dev->mtu = new_mtu;
1986 return 0;
1987}
1988
1989static void ehea_xmit2(struct sk_buff *skb, struct net_device *dev,
1990 struct ehea_swqe *swqe, u32 lkey)
1991{
1992 if (skb->protocol == htons(ETH_P_IP)) {
eddc9ec5 1993 const struct iphdr *iph = ip_hdr(skb);
d1d25aab 1994
7a291083
JBT		 1995 /* IPv4 */
1996 swqe->tx_control |= EHEA_SWQE_CRC
1997 | EHEA_SWQE_IP_CHECKSUM
1998 | EHEA_SWQE_TCP_CHECKSUM
1999 | EHEA_SWQE_IMM_DATA_PRESENT
2000 | EHEA_SWQE_DESCRIPTORS_PRESENT;
2001
2002 write_ip_start_end(swqe, skb);
2003
eddc9ec5 2004 if (iph->protocol == IPPROTO_UDP) {
d1d25aab
JBT		 2005 if ((iph->frag_off & IP_MF)
2006 || (iph->frag_off & IP_OFFSET))
7a291083
JBT		 2007 /* IP fragment, so don't change cs */
2008 swqe->tx_control &= ~EHEA_SWQE_TCP_CHECKSUM;
2009 else
2010 write_udp_offset_end(swqe, skb);
eddc9ec5 2011 } else if (iph->protocol == IPPROTO_TCP) {
7a291083
JBT		 2012 write_tcp_offset_end(swqe, skb);
2013 }
2014
2015 /* icmp (big data) and ip segmentation packets (all other ip
2016 packets) do not require any special handling */
2017
2018 } else {
2019 /* Other Ethernet Protocol */
2020 swqe->tx_control |= EHEA_SWQE_CRC
2021 | EHEA_SWQE_IMM_DATA_PRESENT
2022 | EHEA_SWQE_DESCRIPTORS_PRESENT;
2023 }
2024
2025 write_swqe2_data(skb, dev, swqe, lkey);
2026}
2027
2028static void ehea_xmit3(struct sk_buff *skb, struct net_device *dev,
2029 struct ehea_swqe *swqe)
2030{
2031 int nfrags = skb_shinfo(skb)->nr_frags;
2032 u8 *imm_data = &swqe->u.immdata_nodesc.immediate_data[0];
2033 skb_frag_t *frag;
2034 int i;
2035
2036 if (skb->protocol == htons(ETH_P_IP)) {
eddc9ec5 2037 const struct iphdr *iph = ip_hdr(skb);
d1d25aab 2038
7a291083
JBT		 2039 /* IPv4 */
2040 write_ip_start_end(swqe, skb);
2041
eddc9ec5 2042 if (iph->protocol == IPPROTO_TCP) {
7a291083
JBT		 2043 swqe->tx_control |= EHEA_SWQE_CRC
2044 | EHEA_SWQE_IP_CHECKSUM
2045 | EHEA_SWQE_TCP_CHECKSUM
2046 | EHEA_SWQE_IMM_DATA_PRESENT;
2047
2048 write_tcp_offset_end(swqe, skb);
2049
eddc9ec5 2050 } else if (iph->protocol == IPPROTO_UDP) {
d1d25aab
JBT		 2051 if ((iph->frag_off & IP_MF)
2052 || (iph->frag_off & IP_OFFSET))
7a291083
JBT		 2053 /* IP fragment, so don't change cs */
2054 swqe->tx_control |= EHEA_SWQE_CRC
2055 | EHEA_SWQE_IMM_DATA_PRESENT;
2056 else {
2057 swqe->tx_control |= EHEA_SWQE_CRC
2058 | EHEA_SWQE_IP_CHECKSUM
2059 | EHEA_SWQE_TCP_CHECKSUM
2060 | EHEA_SWQE_IMM_DATA_PRESENT;
2061
2062 write_udp_offset_end(swqe, skb);
2063 }
2064 } else {
2065 /* icmp (big data) and
2066 ip segmentation packets (all other ip packets) */
2067 swqe->tx_control |= EHEA_SWQE_CRC
2068 | EHEA_SWQE_IP_CHECKSUM
2069 | EHEA_SWQE_IMM_DATA_PRESENT;
2070 }
2071 } else {
2072 /* Other Ethernet Protocol */
2073 swqe->tx_control |= EHEA_SWQE_CRC | EHEA_SWQE_IMM_DATA_PRESENT;
2074 }
2075 /* copy (immediate) data */
2076 if (nfrags == 0) {
2077 /* data is in a single piece */
d626f62b 2078 skb_copy_from_linear_data(skb, imm_data, skb->len);
7a291083
JBT		 2079 } else {
2080 /* first copy data from the skb->data buffer ... */
d626f62b
ACM		 2081 skb_copy_from_linear_data(skb, imm_data,
2082 skb->len - skb->data_len);
7a291083
JBT		 2083 imm_data += skb->len - skb->data_len;
2084
2085 /* ... then copy data from the fragments */
2086 for (i = 0; i < nfrags; i++) {
2087 frag = &skb_shinfo(skb)->frags[i];
2088 memcpy(imm_data,
2089 page_address(frag->page) + frag->page_offset,
2090 frag->size);
2091 imm_data += frag->size;
2092 }
2093 }
2094 swqe->immediate_data_length = skb->len;
2095 dev_kfree_skb(skb);
2096}
2097
18604c54
JBT		 2098static inline int ehea_hash_skb(struct sk_buff *skb, int num_qps)
2099{
2100 struct tcphdr *tcp;
2101 u32 tmp;
2102
2103 if ((skb->protocol == htons(ETH_P_IP)) &&
88ca2d07 2104 (ip_hdr(skb)->protocol == IPPROTO_TCP)) {
508d2b5d
DM		 2105 tcp = (struct tcphdr *)(skb_network_header(skb) +
2106 (ip_hdr(skb)->ihl * 4));
18604c54 2107 tmp = (tcp->source + (tcp->dest << 16)) % 31;
88ca2d07 2108 tmp += ip_hdr(skb)->daddr % 31;
18604c54 2109 return tmp % num_qps;
508d2b5d 2110 } else
18604c54
JBT		 2111 return 0;
2112}
2113
7a291083
JBT		 2114static int ehea_start_xmit(struct sk_buff *skb, struct net_device *dev)
2115{
2116 struct ehea_port *port = netdev_priv(dev);
2117 struct ehea_swqe *swqe;
2118 unsigned long flags;
2119 u32 lkey;
2120 int swqe_index;
18604c54
JBT		 2121 struct ehea_port_res *pr;
2122
2123 pr = &port->port_res[ehea_hash_skb(skb, port->num_tx_qps)];
2124
18604c54
JBT		 2125 if (!spin_trylock(&pr->xmit_lock))
2126 return NETDEV_TX_BUSY;
2127
2128 if (pr->queue_stopped) {
2129 spin_unlock(&pr->xmit_lock);
2130 return NETDEV_TX_BUSY;
2131 }
7a291083
JBT		 2132
2133 swqe = ehea_get_swqe(pr->qp, &swqe_index);
2134 memset(swqe, 0, SWQE_HEADER_SIZE);
2135 atomic_dec(&pr->swqe_avail);
2136
2137 if (skb->len <= SWQE3_MAX_IMM) {
2138 u32 sig_iv = port->sig_comp_iv;
2139 u32 swqe_num = pr->swqe_id_counter;
2140 ehea_xmit3(skb, dev, swqe);
2141 swqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE3_TYPE)
2142 | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, swqe_num);
2143 if (pr->swqe_ll_count >= (sig_iv - 1)) {
2144 swqe->wr_id |= EHEA_BMASK_SET(EHEA_WR_ID_REFILL,
2145 sig_iv);
2146 swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
2147 pr->swqe_ll_count = 0;
2148 } else
2149 pr->swqe_ll_count += 1;
2150 } else {
2151 swqe->wr_id =
2152 EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE2_TYPE)
2153 | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, pr->swqe_id_counter)
acbddb59 2154 | EHEA_BMASK_SET(EHEA_WR_ID_REFILL, 1)
7a291083
JBT		 2155 | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, pr->sq_skba.index);
2156 pr->sq_skba.arr[pr->sq_skba.index] = skb;
2157
2158 pr->sq_skba.index++;
2159 pr->sq_skba.index &= (pr->sq_skba.len - 1);
2160
2161 lkey = pr->send_mr.lkey;
2162 ehea_xmit2(skb, dev, swqe, lkey);
acbddb59 2163 swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
7a291083
JBT		 2164 }
2165 pr->swqe_id_counter += 1;
2166
2167 if (port->vgrp && vlan_tx_tag_present(skb)) {
2168 swqe->tx_control |= EHEA_SWQE_VLAN_INSERT;
2169 swqe->vlan_tag = vlan_tx_tag_get(skb);
2170 }
2171
2172 if (netif_msg_tx_queued(port)) {
2173 ehea_info("post swqe on QP %d", pr->qp->init_attr.qp_nr);
bff0a55f 2174 ehea_dump(swqe, 512, "swqe");
7a291083
JBT		 2175 }
2176
2c69448b
JBT		 2177 if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) {
2178 netif_stop_queue(dev);
2179 swqe->tx_control |= EHEA_SWQE_PURGE;
2180 }
44c82152 2181
7a291083 2182 ehea_post_swqe(pr->qp, swqe);
7393b87c 2183 pr->tx_packets++;
7a291083
JBT		 2184
2185 if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) {
2186 spin_lock_irqsave(&pr->netif_queue, flags);
2187 if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) {
acbddb59 2188 pr->p_stats.queue_stopped++;
7a291083
JBT		 2189 netif_stop_queue(dev);
2190 pr->queue_stopped = 1;
2191 }
2192 spin_unlock_irqrestore(&pr->netif_queue, flags);
2193 }
2194 dev->trans_start = jiffies;
2195 spin_unlock(&pr->xmit_lock);
2c69448b 2196
7a291083
JBT		 2197 return NETDEV_TX_OK;
2198}
2199
2200static void ehea_vlan_rx_register(struct net_device *dev,
2201 struct vlan_group *grp)
2202{
2203 struct ehea_port *port = netdev_priv(dev);
2204 struct ehea_adapter *adapter = port->adapter;
2205 struct hcp_ehea_port_cb1 *cb1;
2206 u64 hret;
2207
2208 port->vgrp = grp;
2209
a1d261c5 2210 cb1 = kzalloc(PAGE_SIZE, GFP_KERNEL);
7a291083
JBT		 2211 if (!cb1) {
2212 ehea_error("no mem for cb1");
2213 goto out;
2214 }
2215
dec590c1 2216 memset(cb1->vlan_filter, 0, sizeof(cb1->vlan_filter));
7a291083
JBT		 2217
2218 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
2219 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2220 if (hret != H_SUCCESS)
2221 ehea_error("modify_ehea_port failed");
2222
2223 kfree(cb1);
2224out:
2225 return;
2226}
2227
2228static void ehea_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
2229{
2230 struct ehea_port *port = netdev_priv(dev);
2231 struct ehea_adapter *adapter = port->adapter;
2232 struct hcp_ehea_port_cb1 *cb1;
2233 int index;
2234 u64 hret;
2235
a1d261c5 2236 cb1 = kzalloc(PAGE_SIZE, GFP_KERNEL);
7a291083
JBT		 2237 if (!cb1) {
2238 ehea_error("no mem for cb1");
2239 goto out;
2240 }
2241
2242 hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
2243 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2244 if (hret != H_SUCCESS) {
2245 ehea_error("query_ehea_port failed");
2246 goto out;
2247 }
2248
2249 index = (vid / 64);
dec590c1 2250 cb1->vlan_filter[index] |= ((u64)(0x8000000000000000 >> (vid & 0x3F)));
7a291083
JBT		 2251
2252 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
2253 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2254 if (hret != H_SUCCESS)
2255 ehea_error("modify_ehea_port failed");
2256out:
2257 kfree(cb1);
2258 return;
2259}
2260
2261static void ehea_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
2262{
2263 struct ehea_port *port = netdev_priv(dev);
2264 struct ehea_adapter *adapter = port->adapter;
2265 struct hcp_ehea_port_cb1 *cb1;
2266 int index;
2267 u64 hret;
2268
5c15bdec 2269 vlan_group_set_device(port->vgrp, vid, NULL);
7a291083 2270
a1d261c5 2271 cb1 = kzalloc(PAGE_SIZE, GFP_KERNEL);
7a291083
JBT		 2272 if (!cb1) {
2273 ehea_error("no mem for cb1");
2274 goto out;
2275 }
2276
2277 hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
2278 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2279 if (hret != H_SUCCESS) {
2280 ehea_error("query_ehea_port failed");
2281 goto out;
2282 }
2283
2284 index = (vid / 64);
dec590c1 2285 cb1->vlan_filter[index] &= ~((u64)(0x8000000000000000 >> (vid & 0x3F)));
7a291083
JBT		 2286
2287 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
2288 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2289 if (hret != H_SUCCESS)
2290 ehea_error("modify_ehea_port failed");
2291out:
2292 kfree(cb1);
2293 return;
2294}
2295
2296int ehea_activate_qp(struct ehea_adapter *adapter, struct ehea_qp *qp)
2297{
2298 int ret = -EIO;
2299 u64 hret;
2300 u16 dummy16 = 0;
2301 u64 dummy64 = 0;
508d2b5d 2302 struct hcp_modify_qp_cb0 *cb0;
7a291083 2303
a1d261c5 2304 cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL);
7a291083
JBT		 2305 if (!cb0) {
2306 ret = -ENOMEM;
2307 goto out;
2308 }
2309
2310 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2311 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2312 if (hret != H_SUCCESS) {
2313 ehea_error("query_ehea_qp failed (1)");
2314 goto out;
2315 }
2316
2317 cb0->qp_ctl_reg = H_QP_CR_STATE_INITIALIZED;
2318 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2319 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2320 &dummy64, &dummy64, &dummy16, &dummy16);
2321 if (hret != H_SUCCESS) {
2322 ehea_error("modify_ehea_qp failed (1)");
2323 goto out;
2324 }
2325
2326 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2327 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2328 if (hret != H_SUCCESS) {
2329 ehea_error("query_ehea_qp failed (2)");
2330 goto out;
2331 }
2332
2333 cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_INITIALIZED;
2334 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2335 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2336 &dummy64, &dummy64, &dummy16, &dummy16);
2337 if (hret != H_SUCCESS) {
2338 ehea_error("modify_ehea_qp failed (2)");
2339 goto out;
2340 }
2341
2342 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2343 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2344 if (hret != H_SUCCESS) {
2345 ehea_error("query_ehea_qp failed (3)");
2346 goto out;
2347 }
2348
2349 cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_RDY2SND;
2350 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2351 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2352 &dummy64, &dummy64, &dummy16, &dummy16);
2353 if (hret != H_SUCCESS) {
2354 ehea_error("modify_ehea_qp failed (3)");
2355 goto out;
2356 }
2357
2358 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2359 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2360 if (hret != H_SUCCESS) {
2361 ehea_error("query_ehea_qp failed (4)");
2362 goto out;
2363 }
2364
2365 ret = 0;
2366out:
2367 kfree(cb0);
2368 return ret;
2369}
2370
2371static int ehea_port_res_setup(struct ehea_port *port, int def_qps,
2372 int add_tx_qps)
2373{
2374 int ret, i;
2375 struct port_res_cfg pr_cfg, pr_cfg_small_rx;
2376 enum ehea_eq_type eq_type = EHEA_EQ;
2377
2378 port->qp_eq = ehea_create_eq(port->adapter, eq_type,
2379 EHEA_MAX_ENTRIES_EQ, 1);
2380 if (!port->qp_eq) {
2381 ret = -EINVAL;
2382 ehea_error("ehea_create_eq failed (qp_eq)");
2383 goto out_kill_eq;
2384 }
2385
2386 pr_cfg.max_entries_rcq = rq1_entries + rq2_entries + rq3_entries;
18604c54 2387 pr_cfg.max_entries_scq = sq_entries * 2;
7a291083
JBT		 2388 pr_cfg.max_entries_sq = sq_entries;
2389 pr_cfg.max_entries_rq1 = rq1_entries;
2390 pr_cfg.max_entries_rq2 = rq2_entries;
2391 pr_cfg.max_entries_rq3 = rq3_entries;
2392
2393 pr_cfg_small_rx.max_entries_rcq = 1;
2394 pr_cfg_small_rx.max_entries_scq = sq_entries;
2395 pr_cfg_small_rx.max_entries_sq = sq_entries;
2396 pr_cfg_small_rx.max_entries_rq1 = 1;
2397 pr_cfg_small_rx.max_entries_rq2 = 1;
2398 pr_cfg_small_rx.max_entries_rq3 = 1;
2399
2400 for (i = 0; i < def_qps; i++) {
2401 ret = ehea_init_port_res(port, &port->port_res[i], &pr_cfg, i);
2402 if (ret)
2403 goto out_clean_pr;
2404 }
2405 for (i = def_qps; i < def_qps + add_tx_qps; i++) {
2406 ret = ehea_init_port_res(port, &port->port_res[i],
2407 &pr_cfg_small_rx, i);
2408 if (ret)
2409 goto out_clean_pr;
2410 }
2411
2412 return 0;
2413
2414out_clean_pr:
2415 while (--i >= 0)
2416 ehea_clean_portres(port, &port->port_res[i]);
2417
2418out_kill_eq:
2419 ehea_destroy_eq(port->qp_eq);
2420 return ret;
2421}
2422
2423static int ehea_clean_all_portres(struct ehea_port *port)
2424{
2425 int ret = 0;
2426 int i;
2427
508d2b5d 2428 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
7a291083
JBT		 2429 ret |= ehea_clean_portres(port, &port->port_res[i]);
2430
2431 ret |= ehea_destroy_eq(port->qp_eq);
2432
2433 return ret;
2434}
2435
35cf2e2e 2436static void ehea_remove_adapter_mr(struct ehea_adapter *adapter)
1211bb6d 2437{
35cf2e2e
TK		 2438 if (adapter->active_ports)
2439 return;
1211bb6d
TK		 2440
2441 ehea_rem_mr(&adapter->mr);
2442}
2443
35cf2e2e 2444static int ehea_add_adapter_mr(struct ehea_adapter *adapter)
1211bb6d 2445{
35cf2e2e
TK		 2446 if (adapter->active_ports)
2447 return 0;
1211bb6d
TK		 2448
2449 return ehea_reg_kernel_mr(adapter, &adapter->mr);
2450}
2451
7a291083
JBT		 2452static int ehea_up(struct net_device *dev)
2453{
2454 int ret, i;
2455 struct ehea_port *port = netdev_priv(dev);
7a291083
JBT		 2456
2457 if (port->state == EHEA_PORT_UP)
2458 return 0;
2459
9f71a568 2460 mutex_lock(&ehea_fw_handles.lock);
21eee2dd 2461
7a291083
JBT		 2462 ret = ehea_port_res_setup(port, port->num_def_qps,
2463 port->num_add_tx_qps);
2464 if (ret) {
2465 ehea_error("port_res_failed");
2466 goto out;
2467 }
2468
2469 /* Set default QP for this port */
2470 ret = ehea_configure_port(port);
2471 if (ret) {
2472 ehea_error("ehea_configure_port failed. ret:%d", ret);
2473 goto out_clean_pr;
2474 }
2475
7a291083
JBT		 2476 ret = ehea_reg_interrupts(dev);
2477 if (ret) {
f9e29228
TK		 2478 ehea_error("reg_interrupts failed. ret:%d", ret);
2479 goto out_clean_pr;
7a291083
JBT		 2480 }
2481
508d2b5d 2482 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
7a291083
JBT		 2483 ret = ehea_activate_qp(port->adapter, port->port_res[i].qp);
2484 if (ret) {
2485 ehea_error("activate_qp failed");
2486 goto out_free_irqs;
2487 }
2488 }
2489
508d2b5d 2490 for (i = 0; i < port->num_def_qps; i++) {
7a291083
JBT		 2491 ret = ehea_fill_port_res(&port->port_res[i]);
2492 if (ret) {
2493 ehea_error("out_free_irqs");
2494 goto out_free_irqs;
2495 }
2496 }
2497
da59cde4 2498 mutex_lock(&ehea_bcmc_regs.lock);
21eee2dd
TK		 2499
2500 ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
2501 if (ret) {
2502 ret = -EIO;
2503 goto out_free_irqs;
2504 }
2505
7a291083 2506 port->state = EHEA_PORT_UP;
21eee2dd
TK		 2507
2508 ret = 0;
7a291083
JBT		 2509 goto out;
2510
2511out_free_irqs:
2512 ehea_free_interrupts(dev);
2513
7a291083
JBT		 2514out_clean_pr:
2515 ehea_clean_all_portres(port);
2516out:
44c82152
TK		 2517 if (ret)
2518 ehea_info("Failed starting %s. ret=%i", dev->name, ret);
2519
21eee2dd 2520 ehea_update_bcmc_registrations();
da59cde4 2521 mutex_unlock(&ehea_bcmc_regs.lock);
21eee2dd
TK		 2522
2523 ehea_update_firmware_handles();
9f71a568 2524 mutex_unlock(&ehea_fw_handles.lock);
21eee2dd 2525
7a291083
JBT		 2526 return ret;
2527}
2528
bea3348e
SH		 2529static void port_napi_disable(struct ehea_port *port)
2530{
2531 int i;
2532
0173b793 2533 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
bea3348e
SH		 2534 napi_disable(&port->port_res[i].napi);
2535}
2536
2537static void port_napi_enable(struct ehea_port *port)
2538{
2539 int i;
2540
0173b793 2541 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
bea3348e
SH		 2542 napi_enable(&port->port_res[i].napi);
2543}
2544
7a291083
JBT		 2545static int ehea_open(struct net_device *dev)
2546{
2547 int ret;
2548 struct ehea_port *port = netdev_priv(dev);
2549
a5af6ad3 2550 mutex_lock(&port->port_lock);
7a291083
JBT		 2551
2552 if (netif_msg_ifup(port))
2553 ehea_info("enabling port %s", dev->name);
2554
2555 ret = ehea_up(dev);
bea3348e
SH		 2556 if (!ret) {
2557 port_napi_enable(port);
7a291083 2558 netif_start_queue(dev);
bea3348e 2559 }
7a291083 2560
a5af6ad3 2561 mutex_unlock(&port->port_lock);
7a291083
JBT		 2562
2563 return ret;
2564}
2565
2566static int ehea_down(struct net_device *dev)
2567{
bea3348e 2568 int ret;
7a291083
JBT		 2569 struct ehea_port *port = netdev_priv(dev);
2570
2571 if (port->state == EHEA_PORT_DOWN)
2572 return 0;
2573
dbbcbb2d
DW		 2574 mutex_lock(&ehea_fw_handles.lock);
2575
da59cde4 2576 mutex_lock(&ehea_bcmc_regs.lock);
7a291083 2577 ehea_drop_multicast_list(dev);
21eee2dd
TK		 2578 ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
2579
7a291083
JBT		 2580 ehea_free_interrupts(dev);
2581
7a291083 2582 port->state = EHEA_PORT_DOWN;
44c82152 2583
21eee2dd 2584 ehea_update_bcmc_registrations();
da59cde4 2585 mutex_unlock(&ehea_bcmc_regs.lock);
21eee2dd 2586
44c82152
TK		 2587 ret = ehea_clean_all_portres(port);
2588 if (ret)
2589 ehea_info("Failed freeing resources for %s. ret=%i",
2590 dev->name, ret);
2591
21eee2dd 2592 ehea_update_firmware_handles();
9f71a568 2593 mutex_unlock(&ehea_fw_handles.lock);
21eee2dd 2594
7a291083
JBT		 2595 return ret;
2596}
2597
2598static int ehea_stop(struct net_device *dev)
2599{
2600 int ret;
2601 struct ehea_port *port = netdev_priv(dev);
2602
2603 if (netif_msg_ifdown(port))
2604 ehea_info("disabling port %s", dev->name);
2605
3bf76b81 2606 flush_scheduled_work();
a5af6ad3 2607 mutex_lock(&port->port_lock);
7a291083 2608 netif_stop_queue(dev);
0173b793 2609 port_napi_disable(port);
7a291083 2610 ret = ehea_down(dev);
a5af6ad3 2611 mutex_unlock(&port->port_lock);
7a291083
JBT		 2612 return ret;
2613}
2614
22559c5d 2615static void ehea_purge_sq(struct ehea_qp *orig_qp)
2c69448b
JBT		 2616{
2617 struct ehea_qp qp = *orig_qp;
2618 struct ehea_qp_init_attr *init_attr = &qp.init_attr;
2619 struct ehea_swqe *swqe;
2620 int wqe_index;
2621 int i;
2622
2623 for (i = 0; i < init_attr->act_nr_send_wqes; i++) {
2624 swqe = ehea_get_swqe(&qp, &wqe_index);
2625 swqe->tx_control |= EHEA_SWQE_PURGE;
2626 }
2627}
2628
22559c5d 2629static void ehea_flush_sq(struct ehea_port *port)
44fb3126
TK		 2630{
2631 int i;
2632
2633 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
2634 struct ehea_port_res *pr = &port->port_res[i];
2635 int swqe_max = pr->sq_skba_size - 2 - pr->swqe_ll_count;
2636 int k = 0;
2637 while (atomic_read(&pr->swqe_avail) < swqe_max) {
2638 msleep(5);
2639 if (++k == 20)
2640 break;
2641 }
2642 }
2643}
2644
2c69448b
JBT		 2645int ehea_stop_qps(struct net_device *dev)
2646{
2647 struct ehea_port *port = netdev_priv(dev);
2648 struct ehea_adapter *adapter = port->adapter;
508d2b5d 2649 struct hcp_modify_qp_cb0 *cb0;
2c69448b
JBT		 2650 int ret = -EIO;
2651 int dret;
2652 int i;
2653 u64 hret;
2654 u64 dummy64 = 0;
2655 u16 dummy16 = 0;
2656
2657 cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL);
2658 if (!cb0) {
2659 ret = -ENOMEM;
2660 goto out;
2661 }
2662
2663 for (i = 0; i < (port->num_def_qps + port->num_add_tx_qps); i++) {
2664 struct ehea_port_res *pr = &port->port_res[i];
2665 struct ehea_qp *qp = pr->qp;
2666
2667 /* Purge send queue */
2668 ehea_purge_sq(qp);
2669
2670 /* Disable queue pair */
2671 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2672 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2673 cb0);
2674 if (hret != H_SUCCESS) {
2675 ehea_error("query_ehea_qp failed (1)");
2676 goto out;
2677 }
2678
2679 cb0->qp_ctl_reg = (cb0->qp_ctl_reg & H_QP_CR_RES_STATE) << 8;
2680 cb0->qp_ctl_reg &= ~H_QP_CR_ENABLED;
2681
2682 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2683 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG,
2684 1), cb0, &dummy64,
2685 &dummy64, &dummy16, &dummy16);
2686 if (hret != H_SUCCESS) {
2687 ehea_error("modify_ehea_qp failed (1)");
2688 goto out;
2689 }
2690
2691 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2692 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2693 cb0);
2694 if (hret != H_SUCCESS) {
2695 ehea_error("query_ehea_qp failed (2)");
2696 goto out;
2697 }
2698
2699 /* deregister shared memory regions */
2700 dret = ehea_rem_smrs(pr);
2701 if (dret) {
2702 ehea_error("unreg shared memory region failed");
2703 goto out;
2704 }
2705 }
2706
2707 ret = 0;
2708out:
2709 kfree(cb0);
2710
2711 return ret;
2712}
2713
508d2b5d 2714void ehea_update_rqs(struct ehea_qp *orig_qp, struct ehea_port_res *pr)
2c69448b
JBT		 2715{
2716 struct ehea_qp qp = *orig_qp;
2717 struct ehea_qp_init_attr *init_attr = &qp.init_attr;
2718 struct ehea_rwqe *rwqe;
2719 struct sk_buff **skba_rq2 = pr->rq2_skba.arr;
2720 struct sk_buff **skba_rq3 = pr->rq3_skba.arr;
2721 struct sk_buff *skb;
2722 u32 lkey = pr->recv_mr.lkey;
2723
2724
2725 int i;
2726 int index;
2727
2728 for (i = 0; i < init_attr->act_nr_rwqes_rq2 + 1; i++) {
2729 rwqe = ehea_get_next_rwqe(&qp, 2);
2730 rwqe->sg_list[0].l_key = lkey;
2731 index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, rwqe->wr_id);
2732 skb = skba_rq2[index];
2733 if (skb)
2734 rwqe->sg_list[0].vaddr = ehea_map_vaddr(skb->data);
2735 }
2736
2737 for (i = 0; i < init_attr->act_nr_rwqes_rq3 + 1; i++) {
2738 rwqe = ehea_get_next_rwqe(&qp, 3);
2739 rwqe->sg_list[0].l_key = lkey;
2740 index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, rwqe->wr_id);
2741 skb = skba_rq3[index];
2742 if (skb)
2743 rwqe->sg_list[0].vaddr = ehea_map_vaddr(skb->data);
2744 }
2745}
2746
2747int ehea_restart_qps(struct net_device *dev)
2748{
2749 struct ehea_port *port = netdev_priv(dev);
2750 struct ehea_adapter *adapter = port->adapter;
2751 int ret = 0;
2752 int i;
2753
508d2b5d 2754 struct hcp_modify_qp_cb0 *cb0;
2c69448b
JBT		 2755 u64 hret;
2756 u64 dummy64 = 0;
2757 u16 dummy16 = 0;
2758
2759 cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL);
2760 if (!cb0) {
2761 ret = -ENOMEM;
2762 goto out;
2763 }
2764
2765 for (i = 0; i < (port->num_def_qps + port->num_add_tx_qps); i++) {
2766 struct ehea_port_res *pr = &port->port_res[i];
2767 struct ehea_qp *qp = pr->qp;
2768
2769 ret = ehea_gen_smrs(pr);
2770 if (ret) {
2771 ehea_error("creation of shared memory regions failed");
2772 goto out;
2773 }
2774
2775 ehea_update_rqs(qp, pr);
2776
2777 /* Enable queue pair */
2778 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2779 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2780 cb0);
2781 if (hret != H_SUCCESS) {
2782 ehea_error("query_ehea_qp failed (1)");
2783 goto out;
2784 }
2785
2786 cb0->qp_ctl_reg = (cb0->qp_ctl_reg & H_QP_CR_RES_STATE) << 8;
2787 cb0->qp_ctl_reg |= H_QP_CR_ENABLED;
2788
2789 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2790 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG,
2791 1), cb0, &dummy64,
2792 &dummy64, &dummy16, &dummy16);
2793 if (hret != H_SUCCESS) {
2794 ehea_error("modify_ehea_qp failed (1)");
2795 goto out;
2796 }
2797
2798 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2799 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2800 cb0);
2801 if (hret != H_SUCCESS) {
2802 ehea_error("query_ehea_qp failed (2)");
2803 goto out;
2804 }
2805
2806 /* refill entire queue */
2807 ehea_refill_rq1(pr, pr->rq1_skba.index, 0);
2808 ehea_refill_rq2(pr, 0);
2809 ehea_refill_rq3(pr, 0);
2810 }
2811out:
2812 kfree(cb0);
2813
2814 return ret;
2815}
2816
c4028958 2817static void ehea_reset_port(struct work_struct *work)
7a291083
JBT		 2818{
2819 int ret;
c4028958
DH		 2820 struct ehea_port *port =
2821 container_of(work, struct ehea_port, reset_task);
2822 struct net_device *dev = port->netdev;
7a291083
JBT		 2823
2824 port->resets++;
a5af6ad3 2825 mutex_lock(&port->port_lock);
7a291083 2826 netif_stop_queue(dev);
bea3348e
SH		 2827
2828 port_napi_disable(port);
7a291083 2829
44c82152 2830 ehea_down(dev);
7a291083
JBT		 2831
2832 ret = ehea_up(dev);
44c82152 2833 if (ret)
7a291083 2834 goto out;
7a291083 2835
2c69448b
JBT		 2836 ehea_set_multicast_list(dev);
2837
7a291083
JBT		 2838 if (netif_msg_timer(port))
2839 ehea_info("Device %s resetted successfully", dev->name);
2840
bea3348e
SH		 2841 port_napi_enable(port);
2842
7a291083
JBT		 2843 netif_wake_queue(dev);
2844out:
a5af6ad3 2845 mutex_unlock(&port->port_lock);
7a291083
JBT		 2846 return;
2847}
2848
44c82152
TK		 2849static void ehea_rereg_mrs(struct work_struct *work)
2850{
2851 int ret, i;
2852 struct ehea_adapter *adapter;
2853
06f89edf 2854 mutex_lock(&dlpar_mem_lock);
44c82152
TK		 2855 ehea_info("LPAR memory enlarged - re-initializing driver");
2856
2857 list_for_each_entry(adapter, &adapter_list, list)
2858 if (adapter->active_ports) {
2859 /* Shutdown all ports */
2860 for (i = 0; i < EHEA_MAX_PORTS; i++) {
2861 struct ehea_port *port = adapter->port[i];
a5af6ad3 2862 struct net_device *dev;
44c82152 2863
a5af6ad3
DW		 2864 if (!port)
2865 continue;
44c82152 2866
a5af6ad3
DW		 2867 dev = port->netdev;
2868
2869 if (dev->flags & IFF_UP) {
2870 mutex_lock(&port->port_lock);
2871 netif_stop_queue(dev);
df39e8ba 2872 ehea_flush_sq(port);
a5af6ad3
DW		 2873 ret = ehea_stop_qps(dev);
2874 if (ret) {
2875 mutex_unlock(&port->port_lock);
2876 goto out;
44c82152 2877 }
a5af6ad3
DW		 2878 port_napi_disable(port);
2879 mutex_unlock(&port->port_lock);
44c82152
TK		 2880 }
2881 }
2882
2883 /* Unregister old memory region */
2884 ret = ehea_rem_mr(&adapter->mr);
2885 if (ret) {
2886 ehea_error("unregister MR failed - driver"
2887 " inoperable!");
2888 goto out;
2889 }
2890 }
2891
2892 ehea_destroy_busmap();
44c82152 2893 ret = ehea_create_busmap();
2c69448b
JBT		 2894 if (ret) {
2895 ehea_error("creating ehea busmap failed");
44c82152 2896 goto out;
2c69448b 2897 }
44c82152
TK		 2898
2899 clear_bit(__EHEA_STOP_XFER, &ehea_driver_flags);
2900
2901 list_for_each_entry(adapter, &adapter_list, list)
2902 if (adapter->active_ports) {
2903 /* Register new memory region */
2904 ret = ehea_reg_kernel_mr(adapter, &adapter->mr);
2905 if (ret) {
2906 ehea_error("register MR failed - driver"
2907 " inoperable!");
2908 goto out;
2909 }
2910
2911 /* Restart all ports */
2912 for (i = 0; i < EHEA_MAX_PORTS; i++) {
2913 struct ehea_port *port = adapter->port[i];
2914
2915 if (port) {
2916 struct net_device *dev = port->netdev;
2917
2918 if (dev->flags & IFF_UP) {
a5af6ad3 2919 mutex_lock(&port->port_lock);
2c69448b
JBT		 2920 port_napi_enable(port);
2921 ret = ehea_restart_qps(dev);
2922 if (!ret)
44c82152 2923 netif_wake_queue(dev);
a5af6ad3 2924 mutex_unlock(&port->port_lock);
44c82152
TK		 2925 }
2926 }
2927 }
2928 }
06f89edf 2929 mutex_unlock(&dlpar_mem_lock);
2c69448b 2930 ehea_info("re-initializing driver complete");
44c82152
TK		 2931out:
2932 return;
2933}
2934
7a291083
JBT		 2935static void ehea_tx_watchdog(struct net_device *dev)
2936{
2937 struct ehea_port *port = netdev_priv(dev);
2938
2c69448b
JBT		 2939 if (netif_carrier_ok(dev) &&
2940 !test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))
3bf76b81 2941 schedule_work(&port->reset_task);
7a291083
JBT		 2942}
2943
2944int ehea_sense_adapter_attr(struct ehea_adapter *adapter)
2945{
2946 struct hcp_query_ehea *cb;
2947 u64 hret;
2948 int ret;
2949
a1d261c5 2950 cb = kzalloc(PAGE_SIZE, GFP_KERNEL);
7a291083
JBT		 2951 if (!cb) {
2952 ret = -ENOMEM;
2953 goto out;
2954 }
2955
2956 hret = ehea_h_query_ehea(adapter->handle, cb);
2957
2958 if (hret != H_SUCCESS) {
2959 ret = -EIO;
2960 goto out_herr;
2961 }
2962
7a291083
JBT		 2963 adapter->max_mc_mac = cb->max_mc_mac - 1;
2964 ret = 0;
2965
2966out_herr:
2967 kfree(cb);
2968out:
2969 return ret;
2970}
2971
1acf2318 2972int ehea_get_jumboframe_status(struct ehea_port *port, int *jumbo)
7a291083 2973{
7a291083 2974 struct hcp_ehea_port_cb4 *cb4;
1acf2318
JBT		 2975 u64 hret;
2976 int ret = 0;
7a291083 2977
1acf2318 2978 *jumbo = 0;
7a291083 2979
1acf2318 2980 /* (Try to) enable *jumbo frames */
a1d261c5 2981 cb4 = kzalloc(PAGE_SIZE, GFP_KERNEL);
7a291083
JBT		 2982 if (!cb4) {
2983 ehea_error("no mem for cb4");
1acf2318
JBT		 2984 ret = -ENOMEM;
2985 goto out;
7a291083 2986 } else {
1acf2318 2987 hret = ehea_h_query_ehea_port(port->adapter->handle,
9c750b7d
TK		 2988 port->logical_port_id,
2989 H_PORT_CB4,
2990 H_PORT_CB4_JUMBO, cb4);
9c750b7d
TK		 2991 if (hret == H_SUCCESS) {
2992 if (cb4->jumbo_frame)
1acf2318 2993 *jumbo = 1;
9c750b7d
TK		 2994 else {
2995 cb4->jumbo_frame = 1;
1acf2318
JBT		 2996 hret = ehea_h_modify_ehea_port(port->adapter->
2997 handle,
9c750b7d 2998 port->
1acf2318 2999 logical_port_id,
9c750b7d
TK		 3000 H_PORT_CB4,
3001 H_PORT_CB4_JUMBO,
3002 cb4);
3003 if (hret == H_SUCCESS)
1acf2318 3004 *jumbo = 1;
9c750b7d 3005 }
1acf2318
JBT		 3006 } else
3007 ret = -EINVAL;
3008
7a291083
JBT		 3009 kfree(cb4);
3010 }
1acf2318
JBT		 3011out:
3012 return ret;
3013}
3014
3015static ssize_t ehea_show_port_id(struct device *dev,
3016 struct device_attribute *attr, char *buf)
3017{
3018 struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev);
a8e34fda 3019 return sprintf(buf, "%d", port->logical_port_id);
1acf2318
JBT		 3020}
3021
3022static DEVICE_ATTR(log_port_id, S_IRUSR | S_IRGRP | S_IROTH, ehea_show_port_id,
3023 NULL);
3024
3025static void __devinit logical_port_release(struct device *dev)
3026{
3027 struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev);
3028 of_node_put(port->ofdev.node);
3029}
3030
3031static struct device *ehea_register_port(struct ehea_port *port,
3032 struct device_node *dn)
3033{
3034 int ret;
3035
3036 port->ofdev.node = of_node_get(dn);
6b08f3ae 3037 port->ofdev.dev.parent = &port->adapter->ofdev->dev;
d1dea38d 3038 port->ofdev.dev.bus = &ibmebus_bus_type;
1acf2318 3039
d1dea38d 3040 sprintf(port->ofdev.dev.bus_id, "port%d", port_name_cnt++);
1acf2318
JBT		 3041 port->ofdev.dev.release = logical_port_release;
3042
3043 ret = of_device_register(&port->ofdev);
3044 if (ret) {
3045 ehea_error("failed to register device. ret=%d", ret);
3046 goto out;
3047 }
3048
3049 ret = device_create_file(&port->ofdev.dev, &dev_attr_log_port_id);
d1d25aab 3050 if (ret) {
1acf2318
JBT		 3051 ehea_error("failed to register attributes, ret=%d", ret);
3052 goto out_unreg_of_dev;
3053 }
e542aa6b 3054
1acf2318
JBT		 3055 return &port->ofdev.dev;
3056
3057out_unreg_of_dev:
3058 of_device_unregister(&port->ofdev);
3059out:
3060 return NULL;
3061}
3062
3063static void ehea_unregister_port(struct ehea_port *port)
3064{
3065 device_remove_file(&port->ofdev.dev, &dev_attr_log_port_id);
3066 of_device_unregister(&port->ofdev);
3067}
3068
3069struct ehea_port *ehea_setup_single_port(struct ehea_adapter *adapter,
3070 u32 logical_port_id,
3071 struct device_node *dn)
3072{
3073 int ret;
3074 struct net_device *dev;
3075 struct ehea_port *port;
3076 struct device *port_dev;
3077 int jumbo;
3078
3079 /* allocate memory for the port structures */
3080 dev = alloc_etherdev(sizeof(struct ehea_port));
3081
3082 if (!dev) {
3083 ehea_error("no mem for net_device");
3084 ret = -ENOMEM;
3085 goto out_err;
3086 }
3087
3088 port = netdev_priv(dev);
3089
a5af6ad3 3090 mutex_init(&port->port_lock);
1acf2318
JBT		 3091 port->state = EHEA_PORT_DOWN;
3092 port->sig_comp_iv = sq_entries / 10;
3093
3094 port->adapter = adapter;
3095 port->netdev = dev;
3096 port->logical_port_id = logical_port_id;
3097
3098 port->msg_enable = netif_msg_init(msg_level, EHEA_MSG_DEFAULT);
3099
3100 port->mc_list = kzalloc(sizeof(struct ehea_mc_list), GFP_KERNEL);
3101 if (!port->mc_list) {
3102 ret = -ENOMEM;
3103 goto out_free_ethdev;
3104 }
3105
3106 INIT_LIST_HEAD(&port->mc_list->list);
3107
3108 ret = ehea_sense_port_attr(port);
3109 if (ret)
3110 goto out_free_mc_list;
3111
3112 port_dev = ehea_register_port(port, dn);
3113 if (!port_dev)
3114 goto out_free_mc_list;
3115
3116 SET_NETDEV_DEV(dev, port_dev);
7a291083
JBT		 3117
3118 /* initialize net_device structure */
7a291083
JBT		 3119 memcpy(dev->dev_addr, &port->mac_addr, ETH_ALEN);
3120
3121 dev->open = ehea_open;
8d22c971
JBT		 3122#ifdef CONFIG_NET_POLL_CONTROLLER
3123 dev->poll_controller = ehea_netpoll;
3124#endif
7a291083
JBT		 3125 dev->stop = ehea_stop;
3126 dev->hard_start_xmit = ehea_start_xmit;
3127 dev->get_stats = ehea_get_stats;
3128 dev->set_multicast_list = ehea_set_multicast_list;
3129 dev->set_mac_address = ehea_set_mac_addr;
3130 dev->change_mtu = ehea_change_mtu;
3131 dev->vlan_rx_register = ehea_vlan_rx_register;
3132 dev->vlan_rx_add_vid = ehea_vlan_rx_add_vid;
3133 dev->vlan_rx_kill_vid = ehea_vlan_rx_kill_vid;
3134 dev->features = NETIF_F_SG | NETIF_F_FRAGLIST | NETIF_F_TSO
dc01c447 3135 | NETIF_F_HIGHDMA | NETIF_F_IP_CSUM | NETIF_F_HW_VLAN_TX
7a291083
JBT		 3136 | NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_FILTER
3137 | NETIF_F_LLTX;
3138 dev->tx_timeout = &ehea_tx_watchdog;
3139 dev->watchdog_timeo = EHEA_WATCH_DOG_TIMEOUT;
3140
c4028958 3141 INIT_WORK(&port->reset_task, ehea_reset_port);
7a291083
JBT		 3142 ehea_set_ethtool_ops(dev);
3143
3144 ret = register_netdev(dev);
3145 if (ret) {
3146 ehea_error("register_netdev failed. ret=%d", ret);
21eee2dd 3147 goto out_unreg_port;
7a291083
JBT		 3148 }
3149
d4dc4ec9
JBT		 3150 port->lro_max_aggr = lro_max_aggr;
3151
1acf2318 3152 ret = ehea_get_jumboframe_status(port, &jumbo);
e542aa6b 3153 if (ret)
1acf2318
JBT		 3154 ehea_error("failed determining jumbo frame status for %s",
3155 port->netdev->name);
3156
9c750b7d
TK		 3157 ehea_info("%s: Jumbo frames are %sabled", dev->name,
3158 jumbo == 1 ? "en" : "dis");
3159
44c82152
TK		 3160 adapter->active_ports++;
3161
1acf2318 3162 return port;
7a291083 3163
1acf2318
JBT		 3164out_unreg_port:
3165 ehea_unregister_port(port);
3166
3167out_free_mc_list:
7a291083 3168 kfree(port->mc_list);
1acf2318
JBT		 3169
3170out_free_ethdev:
3171 free_netdev(dev);
3172
3173out_err:
3174 ehea_error("setting up logical port with id=%d failed, ret=%d",
3175 logical_port_id, ret);
3176 return NULL;
3177}
3178
3179static void ehea_shutdown_single_port(struct ehea_port *port)
3180{
7fb1c2ac 3181 struct ehea_adapter *adapter = port->adapter;
1acf2318
JBT		 3182 unregister_netdev(port->netdev);
3183 ehea_unregister_port(port);
3184 kfree(port->mc_list);
3185 free_netdev(port->netdev);
7fb1c2ac 3186 adapter->active_ports--;
7a291083
JBT		 3187}
3188
3189static int ehea_setup_ports(struct ehea_adapter *adapter)
3190{
1acf2318
JBT		 3191 struct device_node *lhea_dn;
3192 struct device_node *eth_dn = NULL;
d1d25aab 3193
9f9a3b8a 3194 const u32 *dn_log_port_id;
1acf2318
JBT		 3195 int i = 0;
3196
6b08f3ae 3197 lhea_dn = adapter->ofdev->node;
1eef4e04 3198 while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) {
e542aa6b 3199
40cd3a45 3200 dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no",
d1d25aab 3201 NULL);
1acf2318
JBT		 3202 if (!dn_log_port_id) {
3203 ehea_error("bad device node: eth_dn name=%s",
3204 eth_dn->full_name);
3205 continue;
3206 }
7a291083 3207
1211bb6d
TK		 3208 if (ehea_add_adapter_mr(adapter)) {
3209 ehea_error("creating MR failed");
3210 of_node_put(eth_dn);
3211 return -EIO;
3212 }
3213
1acf2318
JBT		 3214 adapter->port[i] = ehea_setup_single_port(adapter,
3215 *dn_log_port_id,
3216 eth_dn);
7a291083 3217 if (adapter->port[i])
1acf2318 3218 ehea_info("%s -> logical port id #%d",
e542aa6b 3219 adapter->port[i]->netdev->name,
1acf2318 3220 *dn_log_port_id);
1211bb6d
TK		 3221 else
3222 ehea_remove_adapter_mr(adapter);
3223
1acf2318 3224 i++;
1eef4e04 3225 };
1211bb6d 3226 return 0;
1acf2318
JBT		 3227}
3228
e542aa6b
JBT		 3229static struct device_node *ehea_get_eth_dn(struct ehea_adapter *adapter,
3230 u32 logical_port_id)
1acf2318
JBT		 3231{
3232 struct device_node *lhea_dn;
3233 struct device_node *eth_dn = NULL;
9f9a3b8a 3234 const u32 *dn_log_port_id;
1acf2318 3235
6b08f3ae 3236 lhea_dn = adapter->ofdev->node;
1eef4e04 3237 while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) {
e542aa6b 3238
40cd3a45 3239 dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no",
d1d25aab 3240 NULL);
1acf2318
JBT		 3241 if (dn_log_port_id)
3242 if (*dn_log_port_id == logical_port_id)
3243 return eth_dn;
1eef4e04 3244 };
1acf2318
JBT		 3245
3246 return NULL;
3247}
3248
3249static ssize_t ehea_probe_port(struct device *dev,
3250 struct device_attribute *attr,
3251 const char *buf, size_t count)
3252{
3253 struct ehea_adapter *adapter = dev->driver_data;
3254 struct ehea_port *port;
3255 struct device_node *eth_dn = NULL;
3256 int i;
3257
3258 u32 logical_port_id;
3259
a8e34fda 3260 sscanf(buf, "%d", &logical_port_id);
1acf2318
JBT		 3261
3262 port = ehea_get_port(adapter, logical_port_id);
3263
3264 if (port) {
3265 ehea_info("adding port with logical port id=%d failed. port "
3266 "already configured as %s.", logical_port_id,
3267 port->netdev->name);
3268 return -EINVAL;
7a291083 3269 }
e542aa6b 3270
1acf2318 3271 eth_dn = ehea_get_eth_dn(adapter, logical_port_id);
7a291083 3272
1acf2318
JBT		 3273 if (!eth_dn) {
3274 ehea_info("no logical port with id %d found", logical_port_id);
3275 return -EINVAL;
3276 }
e542aa6b 3277
1211bb6d
TK		 3278 if (ehea_add_adapter_mr(adapter)) {
3279 ehea_error("creating MR failed");
3280 return -EIO;
3281 }
3282
1acf2318 3283 port = ehea_setup_single_port(adapter, logical_port_id, eth_dn);
7a291083 3284
1eef4e04
JBT		 3285 of_node_put(eth_dn);
3286
1acf2318 3287 if (port) {
508d2b5d 3288 for (i = 0; i < EHEA_MAX_PORTS; i++)
1acf2318
JBT		 3289 if (!adapter->port[i]) {
3290 adapter->port[i] = port;
3291 break;
3292 }
7a291083 3293
1acf2318
JBT		 3294 ehea_info("added %s (logical port id=%d)", port->netdev->name,
3295 logical_port_id);
1211bb6d
TK		 3296 } else {
3297 ehea_remove_adapter_mr(adapter);
e542aa6b 3298 return -EIO;
1211bb6d 3299 }
7a291083 3300
1acf2318
JBT		 3301 return (ssize_t) count;
3302}
3303
3304static ssize_t ehea_remove_port(struct device *dev,
3305 struct device_attribute *attr,
3306 const char *buf, size_t count)
3307{
3308 struct ehea_adapter *adapter = dev->driver_data;
3309 struct ehea_port *port;
3310 int i;
3311 u32 logical_port_id;
3312
a8e34fda 3313 sscanf(buf, "%d", &logical_port_id);
1acf2318
JBT		 3314
3315 port = ehea_get_port(adapter, logical_port_id);
3316
3317 if (port) {
3318 ehea_info("removed %s (logical port id=%d)", port->netdev->name,
3319 logical_port_id);
3320
3321 ehea_shutdown_single_port(port);
3322
508d2b5d 3323 for (i = 0; i < EHEA_MAX_PORTS; i++)
1acf2318
JBT		 3324 if (adapter->port[i] == port) {
3325 adapter->port[i] = NULL;
3326 break;
3327 }
3328 } else {
3329 ehea_error("removing port with logical port id=%d failed. port "
3330 "not configured.", logical_port_id);
3331 return -EINVAL;
3332 }
3333
1211bb6d
TK		 3334 ehea_remove_adapter_mr(adapter);
3335
1acf2318
JBT		 3336 return (ssize_t) count;
3337}
3338
3339static DEVICE_ATTR(probe_port, S_IWUSR, NULL, ehea_probe_port);
3340static DEVICE_ATTR(remove_port, S_IWUSR, NULL, ehea_remove_port);
3341
6b08f3ae 3342int ehea_create_device_sysfs(struct of_device *dev)
1acf2318 3343{
6b08f3ae 3344 int ret = device_create_file(&dev->dev, &dev_attr_probe_port);
1acf2318
JBT		 3345 if (ret)
3346 goto out;
3347
6b08f3ae 3348 ret = device_create_file(&dev->dev, &dev_attr_remove_port);
1acf2318 3349out:
7a291083
JBT		 3350 return ret;
3351}
3352
6b08f3ae 3353void ehea_remove_device_sysfs(struct of_device *dev)
1acf2318 3354{
6b08f3ae
JF		 3355 device_remove_file(&dev->dev, &dev_attr_probe_port);
3356 device_remove_file(&dev->dev, &dev_attr_remove_port);
1acf2318
JBT		 3357}
3358
6b08f3ae 3359static int __devinit ehea_probe_adapter(struct of_device *dev,
1acf2318 3360 const struct of_device_id *id)
7a291083
JBT		 3361{
3362 struct ehea_adapter *adapter;
9f9a3b8a 3363 const u64 *adapter_handle;
7a291083
JBT		 3364 int ret;
3365
6b08f3ae 3366 if (!dev || !dev->node) {
1eef4e04
JBT		 3367 ehea_error("Invalid ibmebus device probed");
3368 return -EINVAL;
3369 }
9f71a568 3370 mutex_lock(&ehea_fw_handles.lock);
1eef4e04 3371
7a291083
JBT		 3372 adapter = kzalloc(sizeof(*adapter), GFP_KERNEL);
3373 if (!adapter) {
3374 ret = -ENOMEM;
6b08f3ae 3375 dev_err(&dev->dev, "no mem for ehea_adapter\n");
7a291083
JBT		 3376 goto out;
3377 }
3378
44c82152
TK		 3379 list_add(&adapter->list, &adapter_list);
3380
6b08f3ae 3381 adapter->ofdev = dev;
1acf2318 3382
6b08f3ae 3383 adapter_handle = of_get_property(dev->node, "ibm,hea-handle",
d1d25aab 3384 NULL);
061bf3cd
TK		 3385 if (adapter_handle)
3386 adapter->handle = *adapter_handle;
3387
3388 if (!adapter->handle) {
6b08f3ae
JF		 3389 dev_err(&dev->dev, "failed getting handle for adapter"
3390 " '%s'\n", dev->node->full_name);
7a291083
JBT		 3391 ret = -ENODEV;
3392 goto out_free_ad;
3393 }
3394
7a291083
JBT		 3395 adapter->pd = EHEA_PD_ID;
3396
6b08f3ae 3397 dev->dev.driver_data = adapter;
7a291083 3398
7a291083
JBT		 3399
3400 /* initialize adapter and ports */
3401 /* get adapter properties */
3402 ret = ehea_sense_adapter_attr(adapter);
3403 if (ret) {
898eb71c 3404 dev_err(&dev->dev, "sense_adapter_attr failed: %d\n", ret);
1211bb6d 3405 goto out_free_ad;
7a291083 3406 }
7a291083
JBT		 3407
3408 adapter->neq = ehea_create_eq(adapter,
3409 EHEA_NEQ, EHEA_MAX_ENTRIES_EQ, 1);
3410 if (!adapter->neq) {
1eef4e04 3411 ret = -EIO;
898eb71c 3412 dev_err(&dev->dev, "NEQ creation failed\n");
1211bb6d 3413 goto out_free_ad;
7a291083
JBT		 3414 }
3415
3416 tasklet_init(&adapter->neq_tasklet, ehea_neq_tasklet,
3417 (unsigned long)adapter);
3418
6b08f3ae 3419 ret = ibmebus_request_irq(adapter->neq->attr.ist1,
38515e90 3420 ehea_interrupt_neq, IRQF_DISABLED,
7a291083
JBT		 3421 "ehea_neq", adapter);
3422 if (ret) {
898eb71c 3423 dev_err(&dev->dev, "requesting NEQ IRQ failed\n");
7a291083
JBT		 3424 goto out_kill_eq;
3425 }
3426
1eef4e04
JBT		 3427 ret = ehea_create_device_sysfs(dev);
3428 if (ret)
3bf76b81 3429 goto out_free_irq;
1acf2318 3430
7a291083
JBT		 3431 ret = ehea_setup_ports(adapter);
3432 if (ret) {
898eb71c 3433 dev_err(&dev->dev, "setup_ports failed\n");
1acf2318 3434 goto out_rem_dev_sysfs;
7a291083
JBT		 3435 }
3436
3437 ret = 0;
3438 goto out;
3439
1acf2318
JBT		 3440out_rem_dev_sysfs:
3441 ehea_remove_device_sysfs(dev);
3442
7a291083 3443out_free_irq:
6b08f3ae 3444 ibmebus_free_irq(adapter->neq->attr.ist1, adapter);
7a291083
JBT		 3445
3446out_kill_eq:
3447 ehea_destroy_eq(adapter->neq);
3448
7a291083
JBT		 3449out_free_ad:
3450 kfree(adapter);
21eee2dd 3451
7a291083 3452out:
21eee2dd 3453 ehea_update_firmware_handles();
9f71a568 3454 mutex_unlock(&ehea_fw_handles.lock);
7a291083
JBT		 3455 return ret;
3456}
3457
6b08f3ae 3458static int __devexit ehea_remove(struct of_device *dev)
7a291083 3459{
6b08f3ae 3460 struct ehea_adapter *adapter = dev->dev.driver_data;
7a291083
JBT		 3461 int i;
3462
1acf2318 3463 for (i = 0; i < EHEA_MAX_PORTS; i++)
7a291083
JBT		 3464 if (adapter->port[i]) {
3465 ehea_shutdown_single_port(adapter->port[i]);
3466 adapter->port[i] = NULL;
3467 }
1acf2318
JBT		 3468
3469 ehea_remove_device_sysfs(dev);
3470
3bf76b81 3471 flush_scheduled_work();
7a291083 3472
9f71a568 3473 mutex_lock(&ehea_fw_handles.lock);
21eee2dd 3474
6b08f3ae 3475 ibmebus_free_irq(adapter->neq->attr.ist1, adapter);
d4150a27 3476 tasklet_kill(&adapter->neq_tasklet);
7a291083
JBT		 3477
3478 ehea_destroy_eq(adapter->neq);
1211bb6d 3479 ehea_remove_adapter_mr(adapter);
44c82152 3480 list_del(&adapter->list);
7a291083 3481 kfree(adapter);
44c82152 3482
21eee2dd 3483 ehea_update_firmware_handles();
9f71a568 3484 mutex_unlock(&ehea_fw_handles.lock);
21eee2dd 3485
7a291083
JBT		 3486 return 0;
3487}
3488
21eee2dd
TK		 3489void ehea_crash_handler(void)
3490{
3491 int i;
3492
3493 if (ehea_fw_handles.arr)
3494 for (i = 0; i < ehea_fw_handles.num_entries; i++)
3495 ehea_h_free_resource(ehea_fw_handles.arr[i].adh,
3496 ehea_fw_handles.arr[i].fwh,
3497 FORCE_FREE);
3498
3499 if (ehea_bcmc_regs.arr)
3500 for (i = 0; i < ehea_bcmc_regs.num_entries; i++)
3501 ehea_h_reg_dereg_bcmc(ehea_bcmc_regs.arr[i].adh,
3502 ehea_bcmc_regs.arr[i].port_id,
3503 ehea_bcmc_regs.arr[i].reg_type,
3504 ehea_bcmc_regs.arr[i].macaddr,
3505 0, H_DEREG_BCMC);
3506}
3507
48cfb14f
HH		 3508static int ehea_mem_notifier(struct notifier_block *nb,
3509 unsigned long action, void *data)
3510{
3511 switch (action) {
3512 case MEM_OFFLINE:
3513 ehea_info("memory has been removed");
3514 ehea_rereg_mrs(NULL);
3515 break;
3516 default:
3517 break;
3518 }
3519 return NOTIFY_OK;
3520}
3521
3522static struct notifier_block ehea_mem_nb = {
3523 .notifier_call = ehea_mem_notifier,
3524};
3525
2a6f4e49
JBT		 3526static int ehea_reboot_notifier(struct notifier_block *nb,
3527 unsigned long action, void *unused)
3528{
3529 if (action == SYS_RESTART) {
3530 ehea_info("Reboot: freeing all eHEA resources");
3531 ibmebus_unregister_driver(&ehea_driver);
3532 }
3533 return NOTIFY_DONE;
3534}
3535
3536static struct notifier_block ehea_reboot_nb = {
508d2b5d 3537 .notifier_call = ehea_reboot_notifier,
2a6f4e49
JBT		 3538};
3539
7a291083
JBT		 3540static int check_module_parm(void)
3541{
3542 int ret = 0;
3543
3544 if ((rq1_entries < EHEA_MIN_ENTRIES_QP) ||
3545 (rq1_entries > EHEA_MAX_ENTRIES_RQ1)) {
3546 ehea_info("Bad parameter: rq1_entries");
3547 ret = -EINVAL;
3548 }
3549 if ((rq2_entries < EHEA_MIN_ENTRIES_QP) ||
3550 (rq2_entries > EHEA_MAX_ENTRIES_RQ2)) {
3551 ehea_info("Bad parameter: rq2_entries");
3552 ret = -EINVAL;
3553 }
3554 if ((rq3_entries < EHEA_MIN_ENTRIES_QP) ||
3555 (rq3_entries > EHEA_MAX_ENTRIES_RQ3)) {
3556 ehea_info("Bad parameter: rq3_entries");
3557 ret = -EINVAL;
3558 }
3559 if ((sq_entries < EHEA_MIN_ENTRIES_QP) ||
3560 (sq_entries > EHEA_MAX_ENTRIES_SQ)) {
3561 ehea_info("Bad parameter: sq_entries");
3562 ret = -EINVAL;
3563 }
3564
3565 return ret;
3566}
3567
4c3ca4da
JBT		 3568static ssize_t ehea_show_capabilities(struct device_driver *drv,
3569 char *buf)
3570{
3571 return sprintf(buf, "%d", EHEA_CAPABILITIES);
3572}
3573
3574static DRIVER_ATTR(capabilities, S_IRUSR | S_IRGRP | S_IROTH,
3575 ehea_show_capabilities, NULL);
3576
7a291083
JBT		 3577int __init ehea_module_init(void)
3578{
3579 int ret;
3580
3581 printk(KERN_INFO "IBM eHEA ethernet device driver (Release %s)\n",
3582 DRV_VERSION);
3583
44c82152
TK		 3584
3585 INIT_WORK(&ehea_rereg_mr_task, ehea_rereg_mrs);
21eee2dd
TK		 3586 memset(&ehea_fw_handles, 0, sizeof(ehea_fw_handles));
3587 memset(&ehea_bcmc_regs, 0, sizeof(ehea_bcmc_regs));
3588
9f71a568 3589 mutex_init(&ehea_fw_handles.lock);
da59cde4 3590 mutex_init(&ehea_bcmc_regs.lock);
44c82152 3591
7a291083
JBT		 3592 ret = check_module_parm();
3593 if (ret)
3594 goto out;
44c82152
TK		 3595
3596 ret = ehea_create_busmap();
3597 if (ret)
3598 goto out;
3599
21eee2dd
TK		 3600 ret = register_reboot_notifier(&ehea_reboot_nb);
3601 if (ret)
3602 ehea_info("failed registering reboot notifier");
3603
48cfb14f
HH		 3604 ret = register_memory_notifier(&ehea_mem_nb);
3605 if (ret)
3606 ehea_info("failed registering memory remove notifier");
3607
21eee2dd
TK		 3608 ret = crash_shutdown_register(&ehea_crash_handler);
3609 if (ret)
3610 ehea_info("failed registering crash handler");
2a6f4e49 3611
7a291083 3612 ret = ibmebus_register_driver(&ehea_driver);
4c3ca4da 3613 if (ret) {
7a291083 3614 ehea_error("failed registering eHEA device driver on ebus");
21eee2dd 3615 goto out2;
4c3ca4da
JBT		 3616 }
3617
3618 ret = driver_create_file(&ehea_driver.driver,
3619 &driver_attr_capabilities);
3620 if (ret) {
3621 ehea_error("failed to register capabilities attribute, ret=%d",
3622 ret);
21eee2dd 3623 goto out3;
4c3ca4da 3624 }
7a291083 3625
21eee2dd
TK		 3626 return ret;
3627
3628out3:
3629 ibmebus_unregister_driver(&ehea_driver);
3630out2:
48cfb14f 3631 unregister_memory_notifier(&ehea_mem_nb);
21eee2dd
TK		 3632 unregister_reboot_notifier(&ehea_reboot_nb);
3633 crash_shutdown_unregister(&ehea_crash_handler);
7a291083
JBT		 3634out:
3635 return ret;
3636}
3637
3638static void __exit ehea_module_exit(void)
3639{
21eee2dd
TK		 3640 int ret;
3641
3bf76b81 3642 flush_scheduled_work();
4c3ca4da 3643 driver_remove_file(&ehea_driver.driver, &driver_attr_capabilities);
7a291083 3644 ibmebus_unregister_driver(&ehea_driver);
2a6f4e49 3645 unregister_reboot_notifier(&ehea_reboot_nb);
21eee2dd
TK		 3646 ret = crash_shutdown_unregister(&ehea_crash_handler);
3647 if (ret)
3648 ehea_info("failed unregistering crash handler");
48cfb14f 3649 unregister_memory_notifier(&ehea_mem_nb);
21eee2dd
TK		 3650 kfree(ehea_fw_handles.arr);
3651 kfree(ehea_bcmc_regs.arr);
44c82152 3652 ehea_destroy_busmap();
7a291083
JBT		 3653}
3654
3655module_init(ehea_module_init);
3656module_exit(ehea_module_exit);
Ubuntu Artful kernel mirror