projects / linux-2.6-block.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
net_sched: use __TCA_HTB_MAX and TCA_HTB_MAX
[linux-2.6-block.git] / drivers / net / ehea / ehea_main.c
CommitLineData
7a291083
JBT		 1/*
2 * linux/drivers/net/ehea/ehea_main.c
3 *
4 * eHEA ethernet device driver for IBM eServer System p
5 *
6 * (C) Copyright IBM Corp. 2006
7 *
8 * Authors:
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>
5a0e3ad6 35#include <linux/slab.h>
7a291083 36#include <linux/if_ether.h>
2a6f4e49
JBT		 37#include <linux/notifier.h>
38#include <linux/reboot.h>
48cfb14f 39#include <linux/memory.h>
21eee2dd 40#include <asm/kexec.h>
06f89edf 41#include <linux/mutex.h>
2a6f4e49 42
7a291083
JBT		 43#include <net/ip.h>
44
45#include "ehea.h"
46#include "ehea_qmr.h"
47#include "ehea_phyp.h"
48
49
50MODULE_LICENSE("GPL");
51MODULE_AUTHOR("Christoph Raisch <raisch@de.ibm.com>");
52MODULE_DESCRIPTION("IBM eServer HEA Driver");
53MODULE_VERSION(DRV_VERSION);
54
55
56static int msg_level = -1;
57static int rq1_entries = EHEA_DEF_ENTRIES_RQ1;
58static int rq2_entries = EHEA_DEF_ENTRIES_RQ2;
59static int rq3_entries = EHEA_DEF_ENTRIES_RQ3;
60static int sq_entries = EHEA_DEF_ENTRIES_SQ;
508d2b5d
DM		 61static int use_mcs;
62static int use_lro;
d4dc4ec9 63static int lro_max_aggr = EHEA_LRO_MAX_AGGR;
18604c54 64static int num_tx_qps = EHEA_NUM_TX_QP;
508d2b5d 65static int prop_carrier_state;
7a291083
JBT		 66
67module_param(msg_level, int, 0);
68module_param(rq1_entries, int, 0);
69module_param(rq2_entries, int, 0);
70module_param(rq3_entries, int, 0);
71module_param(sq_entries, int, 0);
8759cf76 72module_param(prop_carrier_state, int, 0);
18604c54 73module_param(use_mcs, int, 0);
d4dc4ec9
JBT		 74module_param(use_lro, int, 0);
75module_param(lro_max_aggr, int, 0);
18604c54 76module_param(num_tx_qps, int, 0);
7a291083 77
18604c54 78MODULE_PARM_DESC(num_tx_qps, "Number of TX-QPS");
7a291083 79MODULE_PARM_DESC(msg_level, "msg_level");
8759cf76
JBT		 80MODULE_PARM_DESC(prop_carrier_state, "Propagate carrier state of physical "
81 "port to stack. 1:yes, 0:no. Default = 0 ");
7a291083
JBT		 82MODULE_PARM_DESC(rq3_entries, "Number of entries for Receive Queue 3 "
83 "[2^x - 1], x = [6..14]. Default = "
84 __MODULE_STRING(EHEA_DEF_ENTRIES_RQ3) ")");
85MODULE_PARM_DESC(rq2_entries, "Number of entries for Receive Queue 2 "
86 "[2^x - 1], x = [6..14]. Default = "
87 __MODULE_STRING(EHEA_DEF_ENTRIES_RQ2) ")");
88MODULE_PARM_DESC(rq1_entries, "Number of entries for Receive Queue 1 "
89 "[2^x - 1], x = [6..14]. Default = "
90 __MODULE_STRING(EHEA_DEF_ENTRIES_RQ1) ")");
91MODULE_PARM_DESC(sq_entries, " Number of entries for the Send Queue "
92 "[2^x - 1], x = [6..14]. Default = "
93 __MODULE_STRING(EHEA_DEF_ENTRIES_SQ) ")");
18072a5b 94MODULE_PARM_DESC(use_mcs, " 0:NAPI, 1:Multiple receive queues, Default = 0 ");
7a291083 95
d4dc4ec9
JBT		 96MODULE_PARM_DESC(lro_max_aggr, " LRO: Max packets to be aggregated. Default = "
97 __MODULE_STRING(EHEA_LRO_MAX_AGGR));
98MODULE_PARM_DESC(use_lro, " Large Receive Offload, 1: enable, 0: disable, "
99 "Default = 0");
100
508d2b5d 101static int port_name_cnt;
44c82152 102static LIST_HEAD(adapter_list);
48e4cc77 103static unsigned long ehea_driver_flags;
44c82152 104struct work_struct ehea_rereg_mr_task;
06f89edf 105static DEFINE_MUTEX(dlpar_mem_lock);
21eee2dd
TK		 106struct ehea_fw_handle_array ehea_fw_handles;
107struct ehea_bcmc_reg_array ehea_bcmc_regs;
108
d1dea38d 109
2dc11581 110static int __devinit ehea_probe_adapter(struct platform_device *dev,
d1d25aab 111 const struct of_device_id *id);
d1dea38d 112
2dc11581 113static int __devexit ehea_remove(struct platform_device *dev);
d1dea38d
TK		 114
115static struct of_device_id ehea_device_table[] = {
116 {
117 .name = "lhea",
118 .compatible = "IBM,lhea",
119 },
120 {},
121};
b0afffe8 122MODULE_DEVICE_TABLE(of, ehea_device_table);
d1dea38d 123
6b08f3ae 124static struct of_platform_driver ehea_driver = {
4018294b
GL		 125 .driver = {
126 .name = "ehea",
127 .owner = THIS_MODULE,
128 .of_match_table = ehea_device_table,
129 },
d1dea38d
TK		 130 .probe = ehea_probe_adapter,
131 .remove = ehea_remove,
132};
133
508d2b5d
DM		 134void ehea_dump(void *adr, int len, char *msg)
135{
7a291083
JBT		 136 int x;
137 unsigned char *deb = adr;
138 for (x = 0; x < len; x += 16) {
a1c5a893 139 printk(DRV_NAME " %s adr=%p ofs=%04x %016llx %016llx\n", msg,
508d2b5d 140 deb, x, *((u64 *)&deb[0]), *((u64 *)&deb[8]));
7a291083
JBT		 141 deb += 16;
142 }
143}
144
2f69ae01
JBT		 145void ehea_schedule_port_reset(struct ehea_port *port)
146{
147 if (!test_bit(__EHEA_DISABLE_PORT_RESET, &port->flags))
148 schedule_work(&port->reset_task);
149}
150
21eee2dd
TK		 151static void ehea_update_firmware_handles(void)
152{
153 struct ehea_fw_handle_entry *arr = NULL;
154 struct ehea_adapter *adapter;
155 int num_adapters = 0;
156 int num_ports = 0;
157 int num_portres = 0;
158 int i = 0;
159 int num_fw_handles, k, l;
160
161 /* Determine number of handles */
52e21b1b
JBT		 162 mutex_lock(&ehea_fw_handles.lock);
163
21eee2dd
TK		 164 list_for_each_entry(adapter, &adapter_list, list) {
165 num_adapters++;
166
167 for (k = 0; k < EHEA_MAX_PORTS; k++) {
168 struct ehea_port *port = adapter->port[k];
169
170 if (!port || (port->state != EHEA_PORT_UP))
171 continue;
172
173 num_ports++;
174 num_portres += port->num_def_qps + port->num_add_tx_qps;
175 }
176 }
177
178 num_fw_handles = num_adapters * EHEA_NUM_ADAPTER_FW_HANDLES +
179 num_ports * EHEA_NUM_PORT_FW_HANDLES +
180 num_portres * EHEA_NUM_PORTRES_FW_HANDLES;
181
182 if (num_fw_handles) {
baeb2ffa 183 arr = kcalloc(num_fw_handles, sizeof(*arr), GFP_KERNEL);
21eee2dd 184 if (!arr)
52e21b1b 185 goto out; /* Keep the existing array */
21eee2dd
TK		 186 } else
187 goto out_update;
188
189 list_for_each_entry(adapter, &adapter_list, list) {
52e21b1b
JBT		 190 if (num_adapters == 0)
191 break;
192
21eee2dd
TK		 193 for (k = 0; k < EHEA_MAX_PORTS; k++) {
194 struct ehea_port *port = adapter->port[k];
195
8e95a202
JP		 196 if (!port || (port->state != EHEA_PORT_UP) ||
197 (num_ports == 0))
21eee2dd
TK		 198 continue;
199
200 for (l = 0;
201 l < port->num_def_qps + port->num_add_tx_qps;
202 l++) {
203 struct ehea_port_res *pr = &port->port_res[l];
204
205 arr[i].adh = adapter->handle;
206 arr[i++].fwh = pr->qp->fw_handle;
207 arr[i].adh = adapter->handle;
208 arr[i++].fwh = pr->send_cq->fw_handle;
209 arr[i].adh = adapter->handle;
210 arr[i++].fwh = pr->recv_cq->fw_handle;
211 arr[i].adh = adapter->handle;
212 arr[i++].fwh = pr->eq->fw_handle;
213 arr[i].adh = adapter->handle;
214 arr[i++].fwh = pr->send_mr.handle;
215 arr[i].adh = adapter->handle;
216 arr[i++].fwh = pr->recv_mr.handle;
217 }
218 arr[i].adh = adapter->handle;
219 arr[i++].fwh = port->qp_eq->fw_handle;
52e21b1b 220 num_ports--;
21eee2dd
TK		 221 }
222
223 arr[i].adh = adapter->handle;
224 arr[i++].fwh = adapter->neq->fw_handle;
225
226 if (adapter->mr.handle) {
227 arr[i].adh = adapter->handle;
228 arr[i++].fwh = adapter->mr.handle;
229 }
52e21b1b 230 num_adapters--;
21eee2dd
TK		 231 }
232
233out_update:
234 kfree(ehea_fw_handles.arr);
235 ehea_fw_handles.arr = arr;
236 ehea_fw_handles.num_entries = i;
52e21b1b
JBT		 237out:
238 mutex_unlock(&ehea_fw_handles.lock);
21eee2dd
TK		 239}
240
241static void ehea_update_bcmc_registrations(void)
242{
52e21b1b 243 unsigned long flags;
21eee2dd
TK		 244 struct ehea_bcmc_reg_entry *arr = NULL;
245 struct ehea_adapter *adapter;
246 struct ehea_mc_list *mc_entry;
247 int num_registrations = 0;
248 int i = 0;
249 int k;
250
52e21b1b
JBT		 251 spin_lock_irqsave(&ehea_bcmc_regs.lock, flags);
252
21eee2dd
TK		 253 /* Determine number of registrations */
254 list_for_each_entry(adapter, &adapter_list, list)
255 for (k = 0; k < EHEA_MAX_PORTS; k++) {
256 struct ehea_port *port = adapter->port[k];
257
258 if (!port || (port->state != EHEA_PORT_UP))
259 continue;
260
261 num_registrations += 2; /* Broadcast registrations */
262
263 list_for_each_entry(mc_entry, &port->mc_list->list,list)
264 num_registrations += 2;
265 }
266
267 if (num_registrations) {
baeb2ffa 268 arr = kcalloc(num_registrations, sizeof(*arr), GFP_ATOMIC);
21eee2dd 269 if (!arr)
52e21b1b 270 goto out; /* Keep the existing array */
21eee2dd
TK		 271 } else
272 goto out_update;
273
274 list_for_each_entry(adapter, &adapter_list, list) {
275 for (k = 0; k < EHEA_MAX_PORTS; k++) {
276 struct ehea_port *port = adapter->port[k];
277
278 if (!port || (port->state != EHEA_PORT_UP))
279 continue;
280
52e21b1b
JBT		 281 if (num_registrations == 0)
282 goto out_update;
283
21eee2dd
TK		 284 arr[i].adh = adapter->handle;
285 arr[i].port_id = port->logical_port_id;
286 arr[i].reg_type = EHEA_BCMC_BROADCAST |
287 EHEA_BCMC_UNTAGGED;
288 arr[i++].macaddr = port->mac_addr;
289
290 arr[i].adh = adapter->handle;
291 arr[i].port_id = port->logical_port_id;
292 arr[i].reg_type = EHEA_BCMC_BROADCAST |
293 EHEA_BCMC_VLANID_ALL;
294 arr[i++].macaddr = port->mac_addr;
52e21b1b 295 num_registrations -= 2;
21eee2dd
TK		 296
297 list_for_each_entry(mc_entry,
298 &port->mc_list->list, list) {
52e21b1b
JBT		 299 if (num_registrations == 0)
300 goto out_update;
301
21eee2dd
TK		 302 arr[i].adh = adapter->handle;
303 arr[i].port_id = port->logical_port_id;
304 arr[i].reg_type = EHEA_BCMC_SCOPE_ALL |
305 EHEA_BCMC_MULTICAST |
306 EHEA_BCMC_UNTAGGED;
307 arr[i++].macaddr = mc_entry->macaddr;
308
309 arr[i].adh = adapter->handle;
310 arr[i].port_id = port->logical_port_id;
311 arr[i].reg_type = EHEA_BCMC_SCOPE_ALL |
312 EHEA_BCMC_MULTICAST |
313 EHEA_BCMC_VLANID_ALL;
314 arr[i++].macaddr = mc_entry->macaddr;
52e21b1b 315 num_registrations -= 2;
21eee2dd
TK		 316 }
317 }
318 }
319
320out_update:
321 kfree(ehea_bcmc_regs.arr);
322 ehea_bcmc_regs.arr = arr;
323 ehea_bcmc_regs.num_entries = i;
52e21b1b
JBT		 324out:
325 spin_unlock_irqrestore(&ehea_bcmc_regs.lock, flags);
21eee2dd
TK		 326}
327
7a291083
JBT		 328static struct net_device_stats *ehea_get_stats(struct net_device *dev)
329{
330 struct ehea_port *port = netdev_priv(dev);
331 struct net_device_stats *stats = &port->stats;
332 struct hcp_ehea_port_cb2 *cb2;
7393b87c 333 u64 hret, rx_packets, tx_packets;
7a291083
JBT		 334 int i;
335
336 memset(stats, 0, sizeof(*stats));
337
3d8009c7 338 cb2 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083
JBT		 339 if (!cb2) {
340 ehea_error("no mem for cb2");
341 goto out;
342 }
343
344 hret = ehea_h_query_ehea_port(port->adapter->handle,
345 port->logical_port_id,
346 H_PORT_CB2, H_PORT_CB2_ALL, cb2);
347 if (hret != H_SUCCESS) {
348 ehea_error("query_ehea_port failed");
349 goto out_herr;
350 }
351
352 if (netif_msg_hw(port))
353 ehea_dump(cb2, sizeof(*cb2), "net_device_stats");
354
355 rx_packets = 0;
356 for (i = 0; i < port->num_def_qps; i++)
357 rx_packets += port->port_res[i].rx_packets;
358
7393b87c
TK		 359 tx_packets = 0;
360 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
361 tx_packets += port->port_res[i].tx_packets;
362
363 stats->tx_packets = tx_packets;
7a291083
JBT		 364 stats->multicast = cb2->rxmcp;
365 stats->rx_errors = cb2->rxuerr;
366 stats->rx_bytes = cb2->rxo;
367 stats->tx_bytes = cb2->txo;
368 stats->rx_packets = rx_packets;
369
370out_herr:
3faf2693 371 free_page((unsigned long)cb2);
7a291083
JBT		 372out:
373 return stats;
374}
375
376static void ehea_refill_rq1(struct ehea_port_res *pr, int index, int nr_of_wqes)
377{
378 struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
379 struct net_device *dev = pr->port->netdev;
380 int max_index_mask = pr->rq1_skba.len - 1;
2c69448b
JBT		 381 int fill_wqes = pr->rq1_skba.os_skbs + nr_of_wqes;
382 int adder = 0;
7a291083
JBT		 383 int i;
384
2c69448b
JBT		 385 pr->rq1_skba.os_skbs = 0;
386
387 if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) {
44fb3126
TK		 388 if (nr_of_wqes > 0)
389 pr->rq1_skba.index = index;
2c69448b 390 pr->rq1_skba.os_skbs = fill_wqes;
7a291083 391 return;
2c69448b 392 }
7a291083 393
2c69448b 394 for (i = 0; i < fill_wqes; i++) {
7a291083
JBT		 395 if (!skb_arr_rq1[index]) {
396 skb_arr_rq1[index] = netdev_alloc_skb(dev,
397 EHEA_L_PKT_SIZE);
398 if (!skb_arr_rq1[index]) {
2c69448b 399 pr->rq1_skba.os_skbs = fill_wqes - i;
7a291083
JBT		 400 break;
401 }
402 }
403 index--;
404 index &= max_index_mask;
2c69448b 405 adder++;
7a291083 406 }
2c69448b
JBT		 407
408 if (adder == 0)
409 return;
410
7a291083 411 /* Ring doorbell */
2c69448b 412 ehea_update_rq1a(pr->qp, adder);
7a291083
JBT		 413}
414
e2878806 415static void ehea_init_fill_rq1(struct ehea_port_res *pr, int nr_rq1a)
7a291083 416{
7a291083
JBT		 417 struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
418 struct net_device *dev = pr->port->netdev;
419 int i;
420
421 for (i = 0; i < pr->rq1_skba.len; i++) {
422 skb_arr_rq1[i] = netdev_alloc_skb(dev, EHEA_L_PKT_SIZE);
e2878806
TK		 423 if (!skb_arr_rq1[i])
424 break;
7a291083
JBT		 425 }
426 /* Ring doorbell */
427 ehea_update_rq1a(pr->qp, nr_rq1a);
7a291083
JBT		 428}
429
430static int ehea_refill_rq_def(struct ehea_port_res *pr,
431 struct ehea_q_skb_arr *q_skba, int rq_nr,
432 int num_wqes, int wqe_type, int packet_size)
433{
434 struct net_device *dev = pr->port->netdev;
435 struct ehea_qp *qp = pr->qp;
436 struct sk_buff **skb_arr = q_skba->arr;
437 struct ehea_rwqe *rwqe;
438 int i, index, max_index_mask, fill_wqes;
2c69448b 439 int adder = 0;
7a291083
JBT		 440 int ret = 0;
441
442 fill_wqes = q_skba->os_skbs + num_wqes;
2c69448b 443 q_skba->os_skbs = 0;
7a291083 444
2c69448b
JBT		 445 if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) {
446 q_skba->os_skbs = fill_wqes;
7a291083 447 return ret;
2c69448b 448 }
7a291083
JBT		 449
450 index = q_skba->index;
451 max_index_mask = q_skba->len - 1;
452 for (i = 0; i < fill_wqes; i++) {
2c69448b 453 u64 tmp_addr;
89d71a66
ED		 454 struct sk_buff *skb;
455
456 skb = netdev_alloc_skb_ip_align(dev, packet_size);
7a291083 457 if (!skb) {
7a291083 458 q_skba->os_skbs = fill_wqes - i;
e2878806
TK		 459 if (q_skba->os_skbs == q_skba->len - 2) {
460 ehea_info("%s: rq%i ran dry - no mem for skb",
461 pr->port->netdev->name, rq_nr);
462 ret = -ENOMEM;
463 }
7a291083
JBT		 464 break;
465 }
7a291083
JBT		 466
467 skb_arr[index] = skb;
2c69448b
JBT		 468 tmp_addr = ehea_map_vaddr(skb->data);
469 if (tmp_addr == -1) {
470 dev_kfree_skb(skb);
471 q_skba->os_skbs = fill_wqes - i;
472 ret = 0;
473 break;
474 }
7a291083
JBT		 475
476 rwqe = ehea_get_next_rwqe(qp, rq_nr);
477 rwqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, wqe_type)
d1d25aab 478 | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, index);
7a291083 479 rwqe->sg_list[0].l_key = pr->recv_mr.lkey;
2c69448b 480 rwqe->sg_list[0].vaddr = tmp_addr;
7a291083
JBT		 481 rwqe->sg_list[0].len = packet_size;
482 rwqe->data_segments = 1;
483
484 index++;
485 index &= max_index_mask;
2c69448b 486 adder++;
7a291083 487 }
44c82152 488
7a291083 489 q_skba->index = index;
2c69448b
JBT		 490 if (adder == 0)
491 goto out;
7a291083
JBT		 492
493 /* Ring doorbell */
494 iosync();
495 if (rq_nr == 2)
2c69448b 496 ehea_update_rq2a(pr->qp, adder);
7a291083 497 else
2c69448b 498 ehea_update_rq3a(pr->qp, adder);
44c82152 499out:
7a291083
JBT		 500 return ret;
501}
502
503
504static int ehea_refill_rq2(struct ehea_port_res *pr, int nr_of_wqes)
505{
506 return ehea_refill_rq_def(pr, &pr->rq2_skba, 2,
507 nr_of_wqes, EHEA_RWQE2_TYPE,
89d71a66 508 EHEA_RQ2_PKT_SIZE);
7a291083
JBT		 509}
510
511
512static int ehea_refill_rq3(struct ehea_port_res *pr, int nr_of_wqes)
513{
514 return ehea_refill_rq_def(pr, &pr->rq3_skba, 3,
515 nr_of_wqes, EHEA_RWQE3_TYPE,
89d71a66 516 EHEA_MAX_PACKET_SIZE);
7a291083
JBT		 517}
518
519static inline int ehea_check_cqe(struct ehea_cqe *cqe, int *rq_num)
520{
521 *rq_num = (cqe->type & EHEA_CQE_TYPE_RQ) >> 5;
522 if ((cqe->status & EHEA_CQE_STAT_ERR_MASK) == 0)
523 return 0;
524 if (((cqe->status & EHEA_CQE_STAT_ERR_TCP) != 0) &&
525 (cqe->header_length == 0))
526 return 0;
527 return -EINVAL;
528}
529
530static inline void ehea_fill_skb(struct net_device *dev,
531 struct sk_buff *skb, struct ehea_cqe *cqe)
532{
533 int length = cqe->num_bytes_transfered - 4; /*remove CRC */
534
535 skb_put(skb, length);
536 skb->ip_summed = CHECKSUM_UNNECESSARY;
537 skb->protocol = eth_type_trans(skb, dev);
538}
539
540static inline struct sk_buff *get_skb_by_index(struct sk_buff **skb_array,
541 int arr_len,
542 struct ehea_cqe *cqe)
543{
544 int skb_index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, cqe->wr_id);
545 struct sk_buff *skb;
546 void *pref;
547 int x;
548
549 x = skb_index + 1;
550 x &= (arr_len - 1);
551
552 pref = skb_array[x];
0b2febf3
HH		 553 if (pref) {
554 prefetchw(pref);
555 prefetchw(pref + EHEA_CACHE_LINE);
556
557 pref = (skb_array[x]->data);
558 prefetch(pref);
559 prefetch(pref + EHEA_CACHE_LINE);
560 prefetch(pref + EHEA_CACHE_LINE * 2);
561 prefetch(pref + EHEA_CACHE_LINE * 3);
562 }
563
7a291083
JBT		 564 skb = skb_array[skb_index];
565 skb_array[skb_index] = NULL;
566 return skb;
567}
568
569static inline struct sk_buff *get_skb_by_index_ll(struct sk_buff **skb_array,
570 int arr_len, int wqe_index)
571{
572 struct sk_buff *skb;
573 void *pref;
574 int x;
575
576 x = wqe_index + 1;
577 x &= (arr_len - 1);
578
579 pref = skb_array[x];
0b2febf3
HH		 580 if (pref) {
581 prefetchw(pref);
582 prefetchw(pref + EHEA_CACHE_LINE);
7a291083 583
0b2febf3
HH		 584 pref = (skb_array[x]->data);
585 prefetchw(pref);
586 prefetchw(pref + EHEA_CACHE_LINE);
587 }
7a291083
JBT		 588
589 skb = skb_array[wqe_index];
590 skb_array[wqe_index] = NULL;
591 return skb;
592}
593
594static int ehea_treat_poll_error(struct ehea_port_res *pr, int rq,
595 struct ehea_cqe *cqe, int *processed_rq2,
596 int *processed_rq3)
597{
598 struct sk_buff *skb;
599
acbddb59
JBT		 600 if (cqe->status & EHEA_CQE_STAT_ERR_TCP)
601 pr->p_stats.err_tcp_cksum++;
602 if (cqe->status & EHEA_CQE_STAT_ERR_IP)
603 pr->p_stats.err_ip_cksum++;
604 if (cqe->status & EHEA_CQE_STAT_ERR_CRC)
605 pr->p_stats.err_frame_crc++;
606
7a291083
JBT		 607 if (rq == 2) {
608 *processed_rq2 += 1;
609 skb = get_skb_by_index(pr->rq2_skba.arr, pr->rq2_skba.len, cqe);
610 dev_kfree_skb(skb);
611 } else if (rq == 3) {
612 *processed_rq3 += 1;
613 skb = get_skb_by_index(pr->rq3_skba.arr, pr->rq3_skba.len, cqe);
614 dev_kfree_skb(skb);
615 }
616
617 if (cqe->status & EHEA_CQE_STAT_FAT_ERR_MASK) {
58dd8258
TK		 618 if (netif_msg_rx_err(pr->port)) {
619 ehea_error("Critical receive error for QP %d. "
620 "Resetting port.", pr->qp->init_attr.qp_nr);
621 ehea_dump(cqe, sizeof(*cqe), "CQE");
622 }
2f69ae01 623 ehea_schedule_port_reset(pr->port);
7a291083
JBT		 624 return 1;
625 }
626
627 return 0;
628}
629
d4dc4ec9
JBT		 630static int get_skb_hdr(struct sk_buff *skb, void **iphdr,
631 void **tcph, u64 *hdr_flags, void *priv)
632{
633 struct ehea_cqe *cqe = priv;
634 unsigned int ip_len;
635 struct iphdr *iph;
636
637 /* non tcp/udp packets */
638 if (!cqe->header_length)
639 return -1;
640
641 /* non tcp packet */
642 skb_reset_network_header(skb);
643 iph = ip_hdr(skb);
644 if (iph->protocol != IPPROTO_TCP)
645 return -1;
646
647 ip_len = ip_hdrlen(skb);
648 skb_set_transport_header(skb, ip_len);
649 *tcph = tcp_hdr(skb);
650
651 /* check if ip header and tcp header are complete */
3ff2cd23 652 if (ntohs(iph->tot_len) < ip_len + tcp_hdrlen(skb))
d4dc4ec9
JBT		 653 return -1;
654
655 *hdr_flags = LRO_IPV4 | LRO_TCP;
656 *iphdr = iph;
657
658 return 0;
659}
660
661static void ehea_proc_skb(struct ehea_port_res *pr, struct ehea_cqe *cqe,
662 struct sk_buff *skb)
663{
8e95a202
JP		 664 int vlan_extracted = ((cqe->status & EHEA_CQE_VLAN_TAG_XTRACT) &&
665 pr->port->vgrp);
d4dc4ec9
JBT		 666
667 if (use_lro) {
668 if (vlan_extracted)
669 lro_vlan_hwaccel_receive_skb(&pr->lro_mgr, skb,
670 pr->port->vgrp,
671 cqe->vlan_tag,
672 cqe);
673 else
674 lro_receive_skb(&pr->lro_mgr, skb, cqe);
675 } else {
676 if (vlan_extracted)
677 vlan_hwaccel_receive_skb(skb, pr->port->vgrp,
678 cqe->vlan_tag);
679 else
680 netif_receive_skb(skb);
681 }
682}
683
bea3348e
SH		 684static int ehea_proc_rwqes(struct net_device *dev,
685 struct ehea_port_res *pr,
686 int budget)
7a291083 687{
18604c54 688 struct ehea_port *port = pr->port;
7a291083
JBT		 689 struct ehea_qp *qp = pr->qp;
690 struct ehea_cqe *cqe;
691 struct sk_buff *skb;
692 struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
693 struct sk_buff **skb_arr_rq2 = pr->rq2_skba.arr;
694 struct sk_buff **skb_arr_rq3 = pr->rq3_skba.arr;
695 int skb_arr_rq1_len = pr->rq1_skba.len;
696 int skb_arr_rq2_len = pr->rq2_skba.len;
697 int skb_arr_rq3_len = pr->rq3_skba.len;
698 int processed, processed_rq1, processed_rq2, processed_rq3;
bea3348e 699 int wqe_index, last_wqe_index, rq, port_reset;
7a291083
JBT		 700
701 processed = processed_rq1 = processed_rq2 = processed_rq3 = 0;
702 last_wqe_index = 0;
7a291083 703
7a291083 704 cqe = ehea_poll_rq1(qp, &wqe_index);
bea3348e 705 while ((processed < budget) && cqe) {
7a291083
JBT		 706 ehea_inc_rq1(qp);
707 processed_rq1++;
708 processed++;
7a291083
JBT		 709 if (netif_msg_rx_status(port))
710 ehea_dump(cqe, sizeof(*cqe), "CQE");
711
712 last_wqe_index = wqe_index;
713 rmb();
714 if (!ehea_check_cqe(cqe, &rq)) {
508d2b5d
DM		 715 if (rq == 1) {
716 /* LL RQ1 */
7a291083
JBT		 717 skb = get_skb_by_index_ll(skb_arr_rq1,
718 skb_arr_rq1_len,
719 wqe_index);
720 if (unlikely(!skb)) {
721 if (netif_msg_rx_err(port))
722 ehea_error("LL rq1: skb=NULL");
18604c54 723
bea3348e 724 skb = netdev_alloc_skb(dev,
7a291083
JBT		 725 EHEA_L_PKT_SIZE);
726 if (!skb)
727 break;
728 }
508d2b5d 729 skb_copy_to_linear_data(skb, ((char *)cqe) + 64,
d1d25aab 730 cqe->num_bytes_transfered - 4);
bea3348e 731 ehea_fill_skb(dev, skb, cqe);
508d2b5d
DM		 732 } else if (rq == 2) {
733 /* RQ2 */
7a291083
JBT		 734 skb = get_skb_by_index(skb_arr_rq2,
735 skb_arr_rq2_len, cqe);
736 if (unlikely(!skb)) {
737 if (netif_msg_rx_err(port))
738 ehea_error("rq2: skb=NULL");
739 break;
740 }
bea3348e 741 ehea_fill_skb(dev, skb, cqe);
7a291083 742 processed_rq2++;
508d2b5d
DM		 743 } else {
744 /* RQ3 */
7a291083
JBT		 745 skb = get_skb_by_index(skb_arr_rq3,
746 skb_arr_rq3_len, cqe);
747 if (unlikely(!skb)) {
748 if (netif_msg_rx_err(port))
749 ehea_error("rq3: skb=NULL");
750 break;
751 }
bea3348e 752 ehea_fill_skb(dev, skb, cqe);
7a291083
JBT		 753 processed_rq3++;
754 }
755
d4dc4ec9 756 ehea_proc_skb(pr, cqe, skb);
18604c54 757 } else {
acbddb59 758 pr->p_stats.poll_receive_errors++;
7a291083
JBT		 759 port_reset = ehea_treat_poll_error(pr, rq, cqe,
760 &processed_rq2,
761 &processed_rq3);
762 if (port_reset)
763 break;
764 }
765 cqe = ehea_poll_rq1(qp, &wqe_index);
766 }
d4dc4ec9
JBT		 767 if (use_lro)
768 lro_flush_all(&pr->lro_mgr);
7a291083 769
7a291083
JBT		 770 pr->rx_packets += processed;
771
772 ehea_refill_rq1(pr, last_wqe_index, processed_rq1);
773 ehea_refill_rq2(pr, processed_rq2);
774 ehea_refill_rq3(pr, processed_rq3);
775
bea3348e 776 return processed;
7a291083
JBT		 777}
778
2928db4c
AD		 779#define SWQE_RESTART_CHECK 0xdeadbeaff00d0000ull
780
781static void reset_sq_restart_flag(struct ehea_port *port)
782{
783 int i;
784
785 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
786 struct ehea_port_res *pr = &port->port_res[i];
787 pr->sq_restart_flag = 0;
788 }
a8bb69f7 789 wake_up(&port->restart_wq);
2928db4c
AD		 790}
791
792static void check_sqs(struct ehea_port *port)
793{
794 struct ehea_swqe *swqe;
795 int swqe_index;
796 int i, k;
797
798 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
799 struct ehea_port_res *pr = &port->port_res[i];
a8bb69f7 800 int ret;
2928db4c
AD		 801 k = 0;
802 swqe = ehea_get_swqe(pr->qp, &swqe_index);
803 memset(swqe, 0, SWQE_HEADER_SIZE);
804 atomic_dec(&pr->swqe_avail);
805
806 swqe->tx_control |= EHEA_SWQE_PURGE;
807 swqe->wr_id = SWQE_RESTART_CHECK;
808 swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
809 swqe->tx_control |= EHEA_SWQE_IMM_DATA_PRESENT;
810 swqe->immediate_data_length = 80;
811
812 ehea_post_swqe(pr->qp, swqe);
813
a8bb69f7
BL		 814 ret = wait_event_timeout(port->restart_wq,
815 pr->sq_restart_flag == 0,
816 msecs_to_jiffies(100));
817
818 if (!ret) {
819 ehea_error("HW/SW queues out of sync");
820 ehea_schedule_port_reset(pr->port);
821 return;
2928db4c
AD		 822 }
823 }
2928db4c
AD		 824}
825
826
18604c54 827static struct ehea_cqe *ehea_proc_cqes(struct ehea_port_res *pr, int my_quota)
7a291083 828{
acbddb59 829 struct sk_buff *skb;
7a291083
JBT		 830 struct ehea_cq *send_cq = pr->send_cq;
831 struct ehea_cqe *cqe;
18604c54 832 int quota = my_quota;
7a291083
JBT		 833 int cqe_counter = 0;
834 int swqe_av = 0;
acbddb59 835 int index;
7a291083
JBT		 836 unsigned long flags;
837
18604c54 838 cqe = ehea_poll_cq(send_cq);
508d2b5d 839 while (cqe && (quota > 0)) {
18604c54
JBT		 840 ehea_inc_cq(send_cq);
841
7a291083
JBT		 842 cqe_counter++;
843 rmb();
2928db4c
AD		 844
845 if (cqe->wr_id == SWQE_RESTART_CHECK) {
846 pr->sq_restart_flag = 1;
847 swqe_av++;
848 break;
849 }
850
7a291083 851 if (cqe->status & EHEA_CQE_STAT_ERR_MASK) {
ea96ceac
TK		 852 ehea_error("Bad send completion status=0x%04X",
853 cqe->status);
854
7a291083
JBT		 855 if (netif_msg_tx_err(pr->port))
856 ehea_dump(cqe, sizeof(*cqe), "Send CQE");
ea96ceac
TK		 857
858 if (cqe->status & EHEA_CQE_STAT_RESET_MASK) {
859 ehea_error("Resetting port");
860 ehea_schedule_port_reset(pr->port);
861 break;
862 }
7a291083
JBT		 863 }
864
865 if (netif_msg_tx_done(pr->port))
866 ehea_dump(cqe, sizeof(*cqe), "CQE");
867
868 if (likely(EHEA_BMASK_GET(EHEA_WR_ID_TYPE, cqe->wr_id)
acbddb59
JBT		 869 == EHEA_SWQE2_TYPE)) {
870
871 index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, cqe->wr_id);
872 skb = pr->sq_skba.arr[index];
873 dev_kfree_skb(skb);
874 pr->sq_skba.arr[index] = NULL;
875 }
7a291083
JBT		 876
877 swqe_av += EHEA_BMASK_GET(EHEA_WR_ID_REFILL, cqe->wr_id);
878 quota--;
18604c54
JBT		 879
880 cqe = ehea_poll_cq(send_cq);
ee289b64 881 }
7a291083
JBT		 882
883 ehea_update_feca(send_cq, cqe_counter);
884 atomic_add(swqe_av, &pr->swqe_avail);
885
886 spin_lock_irqsave(&pr->netif_queue, flags);
18604c54 887
7a291083
JBT		 888 if (pr->queue_stopped && (atomic_read(&pr->swqe_avail)
889 >= pr->swqe_refill_th)) {
890 netif_wake_queue(pr->port->netdev);
891 pr->queue_stopped = 0;
892 }
893 spin_unlock_irqrestore(&pr->netif_queue, flags);
5b27d427 894 wake_up(&pr->port->swqe_avail_wq);
7a291083 895
18604c54 896 return cqe;
7a291083
JBT		 897}
898
18604c54 899#define EHEA_NAPI_POLL_NUM_BEFORE_IRQ 16
bea3348e 900#define EHEA_POLL_MAX_CQES 65535
18604c54 901
bea3348e 902static int ehea_poll(struct napi_struct *napi, int budget)
7a291083 903{
508d2b5d
DM		 904 struct ehea_port_res *pr = container_of(napi, struct ehea_port_res,
905 napi);
bea3348e 906 struct net_device *dev = pr->port->netdev;
18604c54
JBT		 907 struct ehea_cqe *cqe;
908 struct ehea_cqe *cqe_skb = NULL;
909 int force_irq, wqe_index;
bea3348e 910 int rx = 0;
18604c54
JBT		 911
912 force_irq = (pr->poll_counter > EHEA_NAPI_POLL_NUM_BEFORE_IRQ);
bea3348e
SH		 913 cqe_skb = ehea_proc_cqes(pr, EHEA_POLL_MAX_CQES);
914
915 if (!force_irq)
916 rx += ehea_proc_rwqes(dev, pr, budget - rx);
18604c54 917
bea3348e 918 while ((rx != budget) || force_irq) {
18604c54 919 pr->poll_counter = 0;
bea3348e 920 force_irq = 0;
288379f0 921 napi_complete(napi);
18604c54
JBT		 922 ehea_reset_cq_ep(pr->recv_cq);
923 ehea_reset_cq_ep(pr->send_cq);
924 ehea_reset_cq_n1(pr->recv_cq);
925 ehea_reset_cq_n1(pr->send_cq);
a91fb143 926 rmb();
18604c54
JBT		 927 cqe = ehea_poll_rq1(pr->qp, &wqe_index);
928 cqe_skb = ehea_poll_cq(pr->send_cq);
929
e542aa6b 930 if (!cqe && !cqe_skb)
bea3348e 931 return rx;
18604c54 932
288379f0 933 if (!napi_reschedule(napi))
bea3348e 934 return rx;
18604c54 935
bea3348e
SH		 936 cqe_skb = ehea_proc_cqes(pr, EHEA_POLL_MAX_CQES);
937 rx += ehea_proc_rwqes(dev, pr, budget - rx);
938 }
e542aa6b 939
bea3348e
SH		 940 pr->poll_counter++;
941 return rx;
7a291083
JBT		 942}
943
8d22c971
JBT		 944#ifdef CONFIG_NET_POLL_CONTROLLER
945static void ehea_netpoll(struct net_device *dev)
946{
947 struct ehea_port *port = netdev_priv(dev);
bea3348e 948 int i;
8d22c971 949
bea3348e 950 for (i = 0; i < port->num_def_qps; i++)
288379f0 951 napi_schedule(&port->port_res[i].napi);
8d22c971
JBT		 952}
953#endif
954
7d12e780 955static irqreturn_t ehea_recv_irq_handler(int irq, void *param)
7a291083
JBT		 956{
957 struct ehea_port_res *pr = param;
18604c54 958
288379f0 959 napi_schedule(&pr->napi);
18604c54 960
7a291083
JBT		 961 return IRQ_HANDLED;
962}
963
7d12e780 964static irqreturn_t ehea_qp_aff_irq_handler(int irq, void *param)
7a291083
JBT		 965{
966 struct ehea_port *port = param;
967 struct ehea_eqe *eqe;
d2db9eea 968 struct ehea_qp *qp;
7a291083 969 u32 qp_token;
ea96ceac
TK		 970 u64 resource_type, aer, aerr;
971 int reset_port = 0;
7a291083
JBT		 972
973 eqe = ehea_poll_eq(port->qp_eq);
bb3a6449 974
7a291083 975 while (eqe) {
7a291083 976 qp_token = EHEA_BMASK_GET(EHEA_EQE_QP_TOKEN, eqe->entry);
a1c5a893 977 ehea_error("QP aff_err: entry=0x%llx, token=0x%x",
bb3a6449 978 eqe->entry, qp_token);
d2db9eea
JBT		 979
980 qp = port->port_res[qp_token].qp;
ea96ceac
TK		 981
982 resource_type = ehea_error_data(port->adapter, qp->fw_handle,
983 &aer, &aerr);
984
985 if (resource_type == EHEA_AER_RESTYPE_QP) {
986 if ((aer & EHEA_AER_RESET_MASK) ||
987 (aerr & EHEA_AERR_RESET_MASK))
988 reset_port = 1;
989 } else
990 reset_port = 1; /* Reset in case of CQ or EQ error */
991
bb3a6449 992 eqe = ehea_poll_eq(port->qp_eq);
7a291083
JBT		 993 }
994
ea96ceac
TK		 995 if (reset_port) {
996 ehea_error("Resetting port");
997 ehea_schedule_port_reset(port);
998 }
d2db9eea 999
7a291083
JBT		 1000 return IRQ_HANDLED;
1001}
1002
1003static struct ehea_port *ehea_get_port(struct ehea_adapter *adapter,
1004 int logical_port)
1005{
1006 int i;
1007
1acf2318 1008 for (i = 0; i < EHEA_MAX_PORTS; i++)
41b69c70 1009 if (adapter->port[i])
d1d25aab 1010 if (adapter->port[i]->logical_port_id == logical_port)
41b69c70 1011 return adapter->port[i];
7a291083
JBT		 1012 return NULL;
1013}
1014
1015int ehea_sense_port_attr(struct ehea_port *port)
1016{
1017 int ret;
1018 u64 hret;
1019 struct hcp_ehea_port_cb0 *cb0;
1020
508d2b5d 1021 /* may be called via ehea_neq_tasklet() */
3faf2693 1022 cb0 = (void *)get_zeroed_page(GFP_ATOMIC);
508d2b5d 1023 if (!cb0) {
7a291083
JBT		 1024 ehea_error("no mem for cb0");
1025 ret = -ENOMEM;
1026 goto out;
1027 }
1028
1029 hret = ehea_h_query_ehea_port(port->adapter->handle,
1030 port->logical_port_id, H_PORT_CB0,
1031 EHEA_BMASK_SET(H_PORT_CB0_ALL, 0xFFFF),
1032 cb0);
1033 if (hret != H_SUCCESS) {
1034 ret = -EIO;
1035 goto out_free;
1036 }
1037
1038 /* MAC address */
1039 port->mac_addr = cb0->port_mac_addr << 16;
1040
508d2b5d 1041 if (!is_valid_ether_addr((u8 *)&port->mac_addr)) {
7a291083
JBT		 1042 ret = -EADDRNOTAVAIL;
1043 goto out_free;
1044 }
1045
1046 /* Port speed */
1047 switch (cb0->port_speed) {
1048 case H_SPEED_10M_H:
1049 port->port_speed = EHEA_SPEED_10M;
1050 port->full_duplex = 0;
1051 break;
1052 case H_SPEED_10M_F:
1053 port->port_speed = EHEA_SPEED_10M;
1054 port->full_duplex = 1;
1055 break;
1056 case H_SPEED_100M_H:
1057 port->port_speed = EHEA_SPEED_100M;
1058 port->full_duplex = 0;
1059 break;
1060 case H_SPEED_100M_F:
1061 port->port_speed = EHEA_SPEED_100M;
1062 port->full_duplex = 1;
1063 break;
1064 case H_SPEED_1G_F:
1065 port->port_speed = EHEA_SPEED_1G;
1066 port->full_duplex = 1;
1067 break;
1068 case H_SPEED_10G_F:
1069 port->port_speed = EHEA_SPEED_10G;
1070 port->full_duplex = 1;
1071 break;
1072 default:
1073 port->port_speed = 0;
1074 port->full_duplex = 0;
1075 break;
1076 }
1077
e919b593 1078 port->autoneg = 1;
18604c54 1079 port->num_mcs = cb0->num_default_qps;
e919b593 1080
7a291083 1081 /* Number of default QPs */
18604c54
JBT		 1082 if (use_mcs)
1083 port->num_def_qps = cb0->num_default_qps;
1084 else
1085 port->num_def_qps = 1;
7a291083
JBT		 1086
1087 if (!port->num_def_qps) {
1088 ret = -EINVAL;
1089 goto out_free;
1090 }
1091
18604c54
JBT		 1092 port->num_tx_qps = num_tx_qps;
1093
1094 if (port->num_def_qps >= port->num_tx_qps)
7a291083
JBT		 1095 port->num_add_tx_qps = 0;
1096 else
18604c54 1097 port->num_add_tx_qps = port->num_tx_qps - port->num_def_qps;
7a291083
JBT		 1098
1099 ret = 0;
1100out_free:
1101 if (ret || netif_msg_probe(port))
1102 ehea_dump(cb0, sizeof(*cb0), "ehea_sense_port_attr");
3faf2693 1103 free_page((unsigned long)cb0);
7a291083
JBT		 1104out:
1105 return ret;
1106}
1107
1108int ehea_set_portspeed(struct ehea_port *port, u32 port_speed)
1109{
1110 struct hcp_ehea_port_cb4 *cb4;
1111 u64 hret;
1112 int ret = 0;
1113
3faf2693 1114 cb4 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083
JBT		 1115 if (!cb4) {
1116 ehea_error("no mem for cb4");
1117 ret = -ENOMEM;
1118 goto out;
1119 }
1120
1121 cb4->port_speed = port_speed;
1122
1123 netif_carrier_off(port->netdev);
1124
1125 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1126 port->logical_port_id,
1127 H_PORT_CB4, H_PORT_CB4_SPEED, cb4);
1128 if (hret == H_SUCCESS) {
1129 port->autoneg = port_speed == EHEA_SPEED_AUTONEG ? 1 : 0;
1130
1131 hret = ehea_h_query_ehea_port(port->adapter->handle,
1132 port->logical_port_id,
1133 H_PORT_CB4, H_PORT_CB4_SPEED,
1134 cb4);
1135 if (hret == H_SUCCESS) {
1136 switch (cb4->port_speed) {
1137 case H_SPEED_10M_H:
1138 port->port_speed = EHEA_SPEED_10M;
1139 port->full_duplex = 0;
1140 break;
1141 case H_SPEED_10M_F:
1142 port->port_speed = EHEA_SPEED_10M;
1143 port->full_duplex = 1;
1144 break;
1145 case H_SPEED_100M_H:
1146 port->port_speed = EHEA_SPEED_100M;
1147 port->full_duplex = 0;
1148 break;
1149 case H_SPEED_100M_F:
1150 port->port_speed = EHEA_SPEED_100M;
1151 port->full_duplex = 1;
1152 break;
1153 case H_SPEED_1G_F:
1154 port->port_speed = EHEA_SPEED_1G;
1155 port->full_duplex = 1;
1156 break;
1157 case H_SPEED_10G_F:
1158 port->port_speed = EHEA_SPEED_10G;
1159 port->full_duplex = 1;
1160 break;
1161 default:
1162 port->port_speed = 0;
1163 port->full_duplex = 0;
1164 break;
1165 }
1166 } else {
1167 ehea_error("Failed sensing port speed");
1168 ret = -EIO;
1169 }
1170 } else {
1171 if (hret == H_AUTHORITY) {
7674a588 1172 ehea_info("Hypervisor denied setting port speed");
7a291083
JBT		 1173 ret = -EPERM;
1174 } else {
1175 ret = -EIO;
1176 ehea_error("Failed setting port speed");
1177 }
1178 }
8759cf76
JBT		 1179 if (!prop_carrier_state || (port->phy_link == EHEA_PHY_LINK_UP))
1180 netif_carrier_on(port->netdev);
1181
3faf2693 1182 free_page((unsigned long)cb4);
7a291083
JBT		 1183out:
1184 return ret;
1185}
1186
1187static void ehea_parse_eqe(struct ehea_adapter *adapter, u64 eqe)
1188{
1189 int ret;
1190 u8 ec;
1191 u8 portnum;
1192 struct ehea_port *port;
1193
1194 ec = EHEA_BMASK_GET(NEQE_EVENT_CODE, eqe);
1195 portnum = EHEA_BMASK_GET(NEQE_PORTNUM, eqe);
1196 port = ehea_get_port(adapter, portnum);
1197
1198 switch (ec) {
1199 case EHEA_EC_PORTSTATE_CHG: /* port state change */
1200
1201 if (!port) {
1202 ehea_error("unknown portnum %x", portnum);
1203 break;
1204 }
1205
1206 if (EHEA_BMASK_GET(NEQE_PORT_UP, eqe)) {
1207 if (!netif_carrier_ok(port->netdev)) {
1e1675cc 1208 ret = ehea_sense_port_attr(port);
7a291083
JBT		 1209 if (ret) {
1210 ehea_error("failed resensing port "
1211 "attributes");
1212 break;
1213 }
1214
1215 if (netif_msg_link(port))
1216 ehea_info("%s: Logical port up: %dMbps "
1217 "%s Duplex",
1218 port->netdev->name,
1219 port->port_speed,
1220 port->full_duplex ==
1221 1 ? "Full" : "Half");
1222
1223 netif_carrier_on(port->netdev);
1224 netif_wake_queue(port->netdev);
1225 }
1226 } else
1227 if (netif_carrier_ok(port->netdev)) {
1228 if (netif_msg_link(port))
1229 ehea_info("%s: Logical port down",
1230 port->netdev->name);
1231 netif_carrier_off(port->netdev);
1232 netif_stop_queue(port->netdev);
1233 }
1234
1235 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PORT_UP, eqe)) {
8759cf76 1236 port->phy_link = EHEA_PHY_LINK_UP;
7a291083
JBT		 1237 if (netif_msg_link(port))
1238 ehea_info("%s: Physical port up",
1239 port->netdev->name);
8759cf76
JBT		 1240 if (prop_carrier_state)
1241 netif_carrier_on(port->netdev);
7a291083 1242 } else {
8759cf76 1243 port->phy_link = EHEA_PHY_LINK_DOWN;
7a291083
JBT		 1244 if (netif_msg_link(port))
1245 ehea_info("%s: Physical port down",
1246 port->netdev->name);
8759cf76
JBT		 1247 if (prop_carrier_state)
1248 netif_carrier_off(port->netdev);
7a291083
JBT		 1249 }
1250
1251 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PRIMARY, eqe))
1252 ehea_info("External switch port is primary port");
1253 else
1254 ehea_info("External switch port is backup port");
1255
1256 break;
1257 case EHEA_EC_ADAPTER_MALFUNC:
1258 ehea_error("Adapter malfunction");
1259 break;
1260 case EHEA_EC_PORT_MALFUNC:
1261 ehea_info("Port malfunction: Device: %s", port->netdev->name);
1262 netif_carrier_off(port->netdev);
1263 netif_stop_queue(port->netdev);
1264 break;
1265 default:
a1c5a893 1266 ehea_error("unknown event code %x, eqe=0x%llX", ec, eqe);
7a291083
JBT		 1267 break;
1268 }
1269}
1270
1271static void ehea_neq_tasklet(unsigned long data)
1272{
508d2b5d 1273 struct ehea_adapter *adapter = (struct ehea_adapter *)data;
7a291083
JBT		 1274 struct ehea_eqe *eqe;
1275 u64 event_mask;
1276
1277 eqe = ehea_poll_eq(adapter->neq);
1278 ehea_debug("eqe=%p", eqe);
1279
1280 while (eqe) {
1281 ehea_debug("*eqe=%lx", eqe->entry);
1282 ehea_parse_eqe(adapter, eqe->entry);
1283 eqe = ehea_poll_eq(adapter->neq);
1284 ehea_debug("next eqe=%p", eqe);
1285 }
1286
1287 event_mask = EHEA_BMASK_SET(NELR_PORTSTATE_CHG, 1)
1288 | EHEA_BMASK_SET(NELR_ADAPTER_MALFUNC, 1)
1289 | EHEA_BMASK_SET(NELR_PORT_MALFUNC, 1);
1290
1291 ehea_h_reset_events(adapter->handle,
1292 adapter->neq->fw_handle, event_mask);
1293}
1294
7d12e780 1295static irqreturn_t ehea_interrupt_neq(int irq, void *param)
7a291083
JBT		 1296{
1297 struct ehea_adapter *adapter = param;
1298 tasklet_hi_schedule(&adapter->neq_tasklet);
1299 return IRQ_HANDLED;
1300}
1301
1302
1303static int ehea_fill_port_res(struct ehea_port_res *pr)
1304{
1305 int ret;
1306 struct ehea_qp_init_attr *init_attr = &pr->qp->init_attr;
1307
e2878806
TK		 1308 ehea_init_fill_rq1(pr, init_attr->act_nr_rwqes_rq1
1309 - init_attr->act_nr_rwqes_rq2
1310 - init_attr->act_nr_rwqes_rq3 - 1);
7a291083 1311
e2878806 1312 ret = ehea_refill_rq2(pr, init_attr->act_nr_rwqes_rq2 - 1);
7a291083
JBT		 1313
1314 ret |= ehea_refill_rq3(pr, init_attr->act_nr_rwqes_rq3 - 1);
1315
1316 return ret;
1317}
1318
1319static int ehea_reg_interrupts(struct net_device *dev)
1320{
1321 struct ehea_port *port = netdev_priv(dev);
1322 struct ehea_port_res *pr;
1323 int i, ret;
1324
7a291083
JBT		 1325
1326 snprintf(port->int_aff_name, EHEA_IRQ_NAME_SIZE - 1, "%s-aff",
1327 dev->name);
1328
6b08f3ae 1329 ret = ibmebus_request_irq(port->qp_eq->attr.ist1,
7a291083 1330 ehea_qp_aff_irq_handler,
38515e90 1331 IRQF_DISABLED, port->int_aff_name, port);
7a291083
JBT		 1332 if (ret) {
1333 ehea_error("failed registering irq for qp_aff_irq_handler:"
1334 "ist=%X", port->qp_eq->attr.ist1);
1335 goto out_free_qpeq;
1336 }
1337
1338 if (netif_msg_ifup(port))
1339 ehea_info("irq_handle 0x%X for function qp_aff_irq_handler "
1340 "registered", port->qp_eq->attr.ist1);
1341
18604c54 1342
7a291083
JBT		 1343 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
1344 pr = &port->port_res[i];
1345 snprintf(pr->int_send_name, EHEA_IRQ_NAME_SIZE - 1,
18604c54 1346 "%s-queue%d", dev->name, i);
6b08f3ae 1347 ret = ibmebus_request_irq(pr->eq->attr.ist1,
18604c54 1348 ehea_recv_irq_handler,
38515e90 1349 IRQF_DISABLED, pr->int_send_name,
7a291083
JBT		 1350 pr);
1351 if (ret) {
18604c54 1352 ehea_error("failed registering irq for ehea_queue "
7a291083 1353 "port_res_nr:%d, ist=%X", i,
18604c54 1354 pr->eq->attr.ist1);
7a291083
JBT		 1355 goto out_free_req;
1356 }
1357 if (netif_msg_ifup(port))
18604c54
JBT		 1358 ehea_info("irq_handle 0x%X for function ehea_queue_int "
1359 "%d registered", pr->eq->attr.ist1, i);
7a291083
JBT		 1360 }
1361out:
1362 return ret;
1363
18604c54 1364
7a291083
JBT		 1365out_free_req:
1366 while (--i >= 0) {
18604c54 1367 u32 ist = port->port_res[i].eq->attr.ist1;
6b08f3ae 1368 ibmebus_free_irq(ist, &port->port_res[i]);
7a291083 1369 }
18604c54 1370
7a291083 1371out_free_qpeq:
6b08f3ae 1372 ibmebus_free_irq(port->qp_eq->attr.ist1, port);
7a291083 1373 i = port->num_def_qps;
18604c54 1374
7a291083 1375 goto out;
18604c54 1376
7a291083
JBT		 1377}
1378
1379static void ehea_free_interrupts(struct net_device *dev)
1380{
1381 struct ehea_port *port = netdev_priv(dev);
1382 struct ehea_port_res *pr;
1383 int i;
1384
1385 /* send */
18604c54 1386
7a291083
JBT		 1387 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
1388 pr = &port->port_res[i];
6b08f3ae 1389 ibmebus_free_irq(pr->eq->attr.ist1, pr);
7a291083
JBT		 1390 if (netif_msg_intr(port))
1391 ehea_info("free send irq for res %d with handle 0x%X",
18604c54 1392 i, pr->eq->attr.ist1);
7a291083
JBT		 1393 }
1394
1395 /* associated events */
6b08f3ae 1396 ibmebus_free_irq(port->qp_eq->attr.ist1, port);
7a291083
JBT		 1397 if (netif_msg_intr(port))
1398 ehea_info("associated event interrupt for handle 0x%X freed",
1399 port->qp_eq->attr.ist1);
1400}
1401
1402static int ehea_configure_port(struct ehea_port *port)
1403{
1404 int ret, i;
1405 u64 hret, mask;
1406 struct hcp_ehea_port_cb0 *cb0;
1407
1408 ret = -ENOMEM;
3faf2693 1409 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083
JBT		 1410 if (!cb0)
1411 goto out;
1412
1413 cb0->port_rc = EHEA_BMASK_SET(PXLY_RC_VALID, 1)
1414 | EHEA_BMASK_SET(PXLY_RC_IP_CHKSUM, 1)
1415 | EHEA_BMASK_SET(PXLY_RC_TCP_UDP_CHKSUM, 1)
1416 | EHEA_BMASK_SET(PXLY_RC_VLAN_XTRACT, 1)
1417 | EHEA_BMASK_SET(PXLY_RC_VLAN_TAG_FILTER,
1418 PXLY_RC_VLAN_FILTER)
1419 | EHEA_BMASK_SET(PXLY_RC_JUMBO_FRAME, 1);
1420
18604c54
JBT		 1421 for (i = 0; i < port->num_mcs; i++)
1422 if (use_mcs)
1423 cb0->default_qpn_arr[i] =
1424 port->port_res[i].qp->init_attr.qp_nr;
1425 else
1426 cb0->default_qpn_arr[i] =
1427 port->port_res[0].qp->init_attr.qp_nr;
e542aa6b 1428
7a291083
JBT		 1429 if (netif_msg_ifup(port))
1430 ehea_dump(cb0, sizeof(*cb0), "ehea_configure_port");
1431
1432 mask = EHEA_BMASK_SET(H_PORT_CB0_PRC, 1)
1433 | EHEA_BMASK_SET(H_PORT_CB0_DEFQPNARRAY, 1);
1434
1435 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1436 port->logical_port_id,
1437 H_PORT_CB0, mask, cb0);
1438 ret = -EIO;
1439 if (hret != H_SUCCESS)
1440 goto out_free;
1441
1442 ret = 0;
1443
1444out_free:
3faf2693 1445 free_page((unsigned long)cb0);
7a291083
JBT		 1446out:
1447 return ret;
1448}
1449
e542aa6b 1450int ehea_gen_smrs(struct ehea_port_res *pr)
7a291083 1451{
e542aa6b 1452 int ret;
7a291083
JBT		 1453 struct ehea_adapter *adapter = pr->port->adapter;
1454
e542aa6b
JBT		 1455 ret = ehea_gen_smr(adapter, &adapter->mr, &pr->send_mr);
1456 if (ret)
7a291083
JBT		 1457 goto out;
1458
e542aa6b
JBT		 1459 ret = ehea_gen_smr(adapter, &adapter->mr, &pr->recv_mr);
1460 if (ret)
1461 goto out_free;
7a291083
JBT		 1462
1463 return 0;
1464
e542aa6b
JBT		 1465out_free:
1466 ehea_rem_mr(&pr->send_mr);
7a291083 1467out:
e542aa6b 1468 ehea_error("Generating SMRS failed\n");
7a291083
JBT		 1469 return -EIO;
1470}
1471
e542aa6b 1472int ehea_rem_smrs(struct ehea_port_res *pr)
7a291083 1473{
8e95a202
JP		 1474 if ((ehea_rem_mr(&pr->send_mr)) ||
1475 (ehea_rem_mr(&pr->recv_mr)))
e542aa6b
JBT		 1476 return -EIO;
1477 else
1478 return 0;
7a291083
JBT		 1479}
1480
1481static int ehea_init_q_skba(struct ehea_q_skb_arr *q_skba, int max_q_entries)
1482{
508d2b5d 1483 int arr_size = sizeof(void *) * max_q_entries;
7a291083
JBT		 1484
1485 q_skba->arr = vmalloc(arr_size);
1486 if (!q_skba->arr)
1487 return -ENOMEM;
1488
1489 memset(q_skba->arr, 0, arr_size);
1490
1491 q_skba->len = max_q_entries;
1492 q_skba->index = 0;
1493 q_skba->os_skbs = 0;
1494
1495 return 0;
1496}
1497
1498static int ehea_init_port_res(struct ehea_port *port, struct ehea_port_res *pr,
1499 struct port_res_cfg *pr_cfg, int queue_token)
1500{
1501 struct ehea_adapter *adapter = port->adapter;
1502 enum ehea_eq_type eq_type = EHEA_EQ;
1503 struct ehea_qp_init_attr *init_attr = NULL;
1504 int ret = -EIO;
1505
1506 memset(pr, 0, sizeof(struct ehea_port_res));
1507
1508 pr->port = port;
7a291083
JBT		 1509 spin_lock_init(&pr->xmit_lock);
1510 spin_lock_init(&pr->netif_queue);
1511
18604c54
JBT		 1512 pr->eq = ehea_create_eq(adapter, eq_type, EHEA_MAX_ENTRIES_EQ, 0);
1513 if (!pr->eq) {
1514 ehea_error("create_eq failed (eq)");
7a291083
JBT		 1515 goto out_free;
1516 }
1517
1518 pr->recv_cq = ehea_create_cq(adapter, pr_cfg->max_entries_rcq,
18604c54 1519 pr->eq->fw_handle,
7a291083
JBT		 1520 port->logical_port_id);
1521 if (!pr->recv_cq) {
1522 ehea_error("create_cq failed (cq_recv)");
1523 goto out_free;
1524 }
1525
1526 pr->send_cq = ehea_create_cq(adapter, pr_cfg->max_entries_scq,
18604c54 1527 pr->eq->fw_handle,
7a291083
JBT		 1528 port->logical_port_id);
1529 if (!pr->send_cq) {
1530 ehea_error("create_cq failed (cq_send)");
1531 goto out_free;
1532 }
1533
1534 if (netif_msg_ifup(port))
1535 ehea_info("Send CQ: act_nr_cqes=%d, Recv CQ: act_nr_cqes=%d",
1536 pr->send_cq->attr.act_nr_of_cqes,
1537 pr->recv_cq->attr.act_nr_of_cqes);
1538
1539 init_attr = kzalloc(sizeof(*init_attr), GFP_KERNEL);
1540 if (!init_attr) {
1541 ret = -ENOMEM;
1542 ehea_error("no mem for ehea_qp_init_attr");
1543 goto out_free;
1544 }
1545
1546 init_attr->low_lat_rq1 = 1;
1547 init_attr->signalingtype = 1; /* generate CQE if specified in WQE */
1548 init_attr->rq_count = 3;
1549 init_attr->qp_token = queue_token;
1550 init_attr->max_nr_send_wqes = pr_cfg->max_entries_sq;
1551 init_attr->max_nr_rwqes_rq1 = pr_cfg->max_entries_rq1;
1552 init_attr->max_nr_rwqes_rq2 = pr_cfg->max_entries_rq2;
1553 init_attr->max_nr_rwqes_rq3 = pr_cfg->max_entries_rq3;
1554 init_attr->wqe_size_enc_sq = EHEA_SG_SQ;
1555 init_attr->wqe_size_enc_rq1 = EHEA_SG_RQ1;
1556 init_attr->wqe_size_enc_rq2 = EHEA_SG_RQ2;
1557 init_attr->wqe_size_enc_rq3 = EHEA_SG_RQ3;
1558 init_attr->rq2_threshold = EHEA_RQ2_THRESHOLD;
1559 init_attr->rq3_threshold = EHEA_RQ3_THRESHOLD;
1560 init_attr->port_nr = port->logical_port_id;
1561 init_attr->send_cq_handle = pr->send_cq->fw_handle;
1562 init_attr->recv_cq_handle = pr->recv_cq->fw_handle;
1563 init_attr->aff_eq_handle = port->qp_eq->fw_handle;
1564
1565 pr->qp = ehea_create_qp(adapter, adapter->pd, init_attr);
1566 if (!pr->qp) {
1567 ehea_error("create_qp failed");
1568 ret = -EIO;
1569 goto out_free;
1570 }
1571
1572 if (netif_msg_ifup(port))
1573 ehea_info("QP: qp_nr=%d\n act_nr_snd_wqe=%d\n nr_rwqe_rq1=%d\n "
1574 "nr_rwqe_rq2=%d\n nr_rwqe_rq3=%d", init_attr->qp_nr,
1575 init_attr->act_nr_send_wqes,
1576 init_attr->act_nr_rwqes_rq1,
1577 init_attr->act_nr_rwqes_rq2,
1578 init_attr->act_nr_rwqes_rq3);
1579
44fb3126
TK		 1580 pr->sq_skba_size = init_attr->act_nr_send_wqes + 1;
1581
1582 ret = ehea_init_q_skba(&pr->sq_skba, pr->sq_skba_size);
7a291083
JBT		 1583 ret |= ehea_init_q_skba(&pr->rq1_skba, init_attr->act_nr_rwqes_rq1 + 1);
1584 ret |= ehea_init_q_skba(&pr->rq2_skba, init_attr->act_nr_rwqes_rq2 + 1);
1585 ret |= ehea_init_q_skba(&pr->rq3_skba, init_attr->act_nr_rwqes_rq3 + 1);
1586 if (ret)
1587 goto out_free;
1588
1589 pr->swqe_refill_th = init_attr->act_nr_send_wqes / 10;
1590 if (ehea_gen_smrs(pr) != 0) {
1591 ret = -EIO;
1592 goto out_free;
1593 }
18604c54 1594
7a291083
JBT		 1595 atomic_set(&pr->swqe_avail, init_attr->act_nr_send_wqes - 1);
1596
1597 kfree(init_attr);
18604c54 1598
bea3348e 1599 netif_napi_add(pr->port->netdev, &pr->napi, ehea_poll, 64);
18604c54 1600
d4dc4ec9
JBT		 1601 pr->lro_mgr.max_aggr = pr->port->lro_max_aggr;
1602 pr->lro_mgr.max_desc = MAX_LRO_DESCRIPTORS;
1603 pr->lro_mgr.lro_arr = pr->lro_desc;
1604 pr->lro_mgr.get_skb_header = get_skb_hdr;
1605 pr->lro_mgr.features = LRO_F_NAPI | LRO_F_EXTRACT_VLAN_ID;
1606 pr->lro_mgr.dev = port->netdev;
1607 pr->lro_mgr.ip_summed = CHECKSUM_UNNECESSARY;
1608 pr->lro_mgr.ip_summed_aggr = CHECKSUM_UNNECESSARY;
1609
7a291083
JBT		 1610 ret = 0;
1611 goto out;
1612
1613out_free:
1614 kfree(init_attr);
1615 vfree(pr->sq_skba.arr);
1616 vfree(pr->rq1_skba.arr);
1617 vfree(pr->rq2_skba.arr);
1618 vfree(pr->rq3_skba.arr);
1619 ehea_destroy_qp(pr->qp);
1620 ehea_destroy_cq(pr->send_cq);
1621 ehea_destroy_cq(pr->recv_cq);
18604c54 1622 ehea_destroy_eq(pr->eq);
7a291083
JBT		 1623out:
1624 return ret;
1625}
1626
1627static int ehea_clean_portres(struct ehea_port *port, struct ehea_port_res *pr)
1628{
1629 int ret, i;
1630
357eb46d
HH		 1631 if (pr->qp)
1632 netif_napi_del(&pr->napi);
1633
7a291083
JBT		 1634 ret = ehea_destroy_qp(pr->qp);
1635
1636 if (!ret) {
1637 ehea_destroy_cq(pr->send_cq);
1638 ehea_destroy_cq(pr->recv_cq);
18604c54 1639 ehea_destroy_eq(pr->eq);
7a291083
JBT		 1640
1641 for (i = 0; i < pr->rq1_skba.len; i++)
1642 if (pr->rq1_skba.arr[i])
1643 dev_kfree_skb(pr->rq1_skba.arr[i]);
1644
1645 for (i = 0; i < pr->rq2_skba.len; i++)
1646 if (pr->rq2_skba.arr[i])
1647 dev_kfree_skb(pr->rq2_skba.arr[i]);
1648
1649 for (i = 0; i < pr->rq3_skba.len; i++)
1650 if (pr->rq3_skba.arr[i])
1651 dev_kfree_skb(pr->rq3_skba.arr[i]);
1652
1653 for (i = 0; i < pr->sq_skba.len; i++)
1654 if (pr->sq_skba.arr[i])
1655 dev_kfree_skb(pr->sq_skba.arr[i]);
1656
1657 vfree(pr->rq1_skba.arr);
1658 vfree(pr->rq2_skba.arr);
1659 vfree(pr->rq3_skba.arr);
1660 vfree(pr->sq_skba.arr);
1661 ret = ehea_rem_smrs(pr);
1662 }
1663 return ret;
1664}
1665
1666/*
1667 * The write_* functions store information in swqe which is used by
1668 * the hardware to calculate the ip/tcp/udp checksum
1669 */
1670
1671static inline void write_ip_start_end(struct ehea_swqe *swqe,
1672 const struct sk_buff *skb)
1673{
eddc9ec5 1674 swqe->ip_start = skb_network_offset(skb);
c9bdd4b5 1675 swqe->ip_end = (u8)(swqe->ip_start + ip_hdrlen(skb) - 1);
7a291083
JBT		 1676}
1677
1678static inline void write_tcp_offset_end(struct ehea_swqe *swqe,
1679 const struct sk_buff *skb)
1680{
1681 swqe->tcp_offset =
1682 (u8)(swqe->ip_end + 1 + offsetof(struct tcphdr, check));
1683
1684 swqe->tcp_end = (u16)skb->len - 1;
1685}
1686
1687static inline void write_udp_offset_end(struct ehea_swqe *swqe,
1688 const struct sk_buff *skb)
1689{
1690 swqe->tcp_offset =
1691 (u8)(swqe->ip_end + 1 + offsetof(struct udphdr, check));
1692
1693 swqe->tcp_end = (u16)skb->len - 1;
1694}
1695
1696
1697static void write_swqe2_TSO(struct sk_buff *skb,
1698 struct ehea_swqe *swqe, u32 lkey)
1699{
1700 struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry;
1701 u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0];
e743d313 1702 int skb_data_size = skb_headlen(skb);
7a291083 1703 int headersize;
7a291083
JBT		 1704
1705 /* Packet is TCP with TSO enabled */
1706 swqe->tx_control |= EHEA_SWQE_TSO;
1707 swqe->mss = skb_shinfo(skb)->gso_size;
1708 /* copy only eth/ip/tcp headers to immediate data and
1709 * the rest of skb->data to sg1entry
1710 */
ab6a5bb6 1711 headersize = ETH_HLEN + ip_hdrlen(skb) + tcp_hdrlen(skb);
7a291083 1712
e743d313 1713 skb_data_size = skb_headlen(skb);
7a291083
JBT		 1714
1715 if (skb_data_size >= headersize) {
1716 /* copy immediate data */
d626f62b 1717 skb_copy_from_linear_data(skb, imm_data, headersize);
7a291083
JBT		 1718 swqe->immediate_data_length = headersize;
1719
1720 if (skb_data_size > headersize) {
1721 /* set sg1entry data */
1722 sg1entry->l_key = lkey;
1723 sg1entry->len = skb_data_size - headersize;
44a5b3d5
TK		 1724 sg1entry->vaddr =
1725 ehea_map_vaddr(skb->data + headersize);
7a291083
JBT		 1726 swqe->descriptors++;
1727 }
1728 } else
1729 ehea_error("cannot handle fragmented headers");
1730}
1731
1732static void write_swqe2_nonTSO(struct sk_buff *skb,
1733 struct ehea_swqe *swqe, u32 lkey)
1734{
e743d313 1735 int skb_data_size = skb_headlen(skb);
7a291083
JBT		 1736 u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0];
1737 struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry;
7a291083
JBT		 1738
1739 /* Packet is any nonTSO type
1740 *
1741 * Copy as much as possible skb->data to immediate data and
1742 * the rest to sg1entry
1743 */
1744 if (skb_data_size >= SWQE2_MAX_IMM) {
1745 /* copy immediate data */
d626f62b 1746 skb_copy_from_linear_data(skb, imm_data, SWQE2_MAX_IMM);
7a291083
JBT		 1747
1748 swqe->immediate_data_length = SWQE2_MAX_IMM;
1749
1750 if (skb_data_size > SWQE2_MAX_IMM) {
1751 /* copy sg1entry data */
1752 sg1entry->l_key = lkey;
1753 sg1entry->len = skb_data_size - SWQE2_MAX_IMM;
44a5b3d5
TK		 1754 sg1entry->vaddr =
1755 ehea_map_vaddr(skb->data + SWQE2_MAX_IMM);
7a291083
JBT		 1756 swqe->descriptors++;
1757 }
1758 } else {
d626f62b 1759 skb_copy_from_linear_data(skb, imm_data, skb_data_size);
7a291083
JBT		 1760 swqe->immediate_data_length = skb_data_size;
1761 }
1762}
1763
1764static inline void write_swqe2_data(struct sk_buff *skb, struct net_device *dev,
1765 struct ehea_swqe *swqe, u32 lkey)
1766{
1767 struct ehea_vsgentry *sg_list, *sg1entry, *sgentry;
1768 skb_frag_t *frag;
1769 int nfrags, sg1entry_contains_frag_data, i;
7a291083
JBT		 1770
1771 nfrags = skb_shinfo(skb)->nr_frags;
1772 sg1entry = &swqe->u.immdata_desc.sg_entry;
508d2b5d 1773 sg_list = (struct ehea_vsgentry *)&swqe->u.immdata_desc.sg_list;
7a291083
JBT		 1774 swqe->descriptors = 0;
1775 sg1entry_contains_frag_data = 0;
1776
1777 if ((dev->features & NETIF_F_TSO) && skb_shinfo(skb)->gso_size)
1778 write_swqe2_TSO(skb, swqe, lkey);
1779 else
1780 write_swqe2_nonTSO(skb, swqe, lkey);
1781
1782 /* write descriptors */
1783 if (nfrags > 0) {
1784 if (swqe->descriptors == 0) {
1785 /* sg1entry not yet used */
1786 frag = &skb_shinfo(skb)->frags[0];
1787
1788 /* copy sg1entry data */
1789 sg1entry->l_key = lkey;
1790 sg1entry->len = frag->size;
44a5b3d5
TK		 1791 sg1entry->vaddr =
1792 ehea_map_vaddr(page_address(frag->page)
1793 + frag->page_offset);
7a291083
JBT		 1794 swqe->descriptors++;
1795 sg1entry_contains_frag_data = 1;
1796 }
1797
1798 for (i = sg1entry_contains_frag_data; i < nfrags; i++) {
1799
1800 frag = &skb_shinfo(skb)->frags[i];
1801 sgentry = &sg_list[i - sg1entry_contains_frag_data];
1802
1803 sgentry->l_key = lkey;
1804 sgentry->len = frag->size;
44a5b3d5
TK		 1805 sgentry->vaddr =
1806 ehea_map_vaddr(page_address(frag->page)
1807 + frag->page_offset);
7a291083
JBT		 1808 swqe->descriptors++;
1809 }
1810 }
1811}
1812
1813static int ehea_broadcast_reg_helper(struct ehea_port *port, u32 hcallid)
1814{
1815 int ret = 0;
1816 u64 hret;
1817 u8 reg_type;
1818
1819 /* De/Register untagged packets */
1820 reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_UNTAGGED;
1821 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1822 port->logical_port_id,
1823 reg_type, port->mac_addr, 0, hcallid);
1824 if (hret != H_SUCCESS) {
f9e29228 1825 ehea_error("%sregistering bc address failed (tagged)",
508d2b5d 1826 hcallid == H_REG_BCMC ? "" : "de");
7a291083
JBT		 1827 ret = -EIO;
1828 goto out_herr;
1829 }
1830
1831 /* De/Register VLAN packets */
1832 reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_VLANID_ALL;
1833 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1834 port->logical_port_id,
1835 reg_type, port->mac_addr, 0, hcallid);
1836 if (hret != H_SUCCESS) {
f9e29228
TK		 1837 ehea_error("%sregistering bc address failed (vlan)",
1838 hcallid == H_REG_BCMC ? "" : "de");
7a291083
JBT		 1839 ret = -EIO;
1840 }
1841out_herr:
1842 return ret;
1843}
1844
1845static int ehea_set_mac_addr(struct net_device *dev, void *sa)
1846{
1847 struct ehea_port *port = netdev_priv(dev);
1848 struct sockaddr *mac_addr = sa;
1849 struct hcp_ehea_port_cb0 *cb0;
1850 int ret;
1851 u64 hret;
1852
1853 if (!is_valid_ether_addr(mac_addr->sa_data)) {
1854 ret = -EADDRNOTAVAIL;
1855 goto out;
1856 }
1857
3faf2693 1858 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083
JBT		 1859 if (!cb0) {
1860 ehea_error("no mem for cb0");
1861 ret = -ENOMEM;
1862 goto out;
1863 }
1864
1865 memcpy(&(cb0->port_mac_addr), &(mac_addr->sa_data[0]), ETH_ALEN);
1866
1867 cb0->port_mac_addr = cb0->port_mac_addr >> 16;
1868
1869 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1870 port->logical_port_id, H_PORT_CB0,
1871 EHEA_BMASK_SET(H_PORT_CB0_MAC, 1), cb0);
1872 if (hret != H_SUCCESS) {
1873 ret = -EIO;
1874 goto out_free;
1875 }
1876
1877 memcpy(dev->dev_addr, mac_addr->sa_data, dev->addr_len);
1878
1879 /* Deregister old MAC in pHYP */
00aaea2f
JBT		 1880 if (port->state == EHEA_PORT_UP) {
1881 ret = ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
1882 if (ret)
1883 goto out_upregs;
1884 }
7a291083
JBT		 1885
1886 port->mac_addr = cb0->port_mac_addr << 16;
1887
1888 /* Register new MAC in pHYP */
00aaea2f
JBT		 1889 if (port->state == EHEA_PORT_UP) {
1890 ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
1891 if (ret)
1892 goto out_upregs;
1893 }
7a291083
JBT		 1894
1895 ret = 0;
21eee2dd
TK		 1896
1897out_upregs:
1898 ehea_update_bcmc_registrations();
7a291083 1899out_free:
3faf2693 1900 free_page((unsigned long)cb0);
7a291083
JBT		 1901out:
1902 return ret;
1903}
1904
1905static void ehea_promiscuous_error(u64 hret, int enable)
1906{
7674a588
TK		 1907 if (hret == H_AUTHORITY)
1908 ehea_info("Hypervisor denied %sabling promiscuous mode",
1909 enable == 1 ? "en" : "dis");
1910 else
1911 ehea_error("failed %sabling promiscuous mode",
1912 enable == 1 ? "en" : "dis");
7a291083
JBT		 1913}
1914
1915static void ehea_promiscuous(struct net_device *dev, int enable)
1916{
1917 struct ehea_port *port = netdev_priv(dev);
1918 struct hcp_ehea_port_cb7 *cb7;
1919 u64 hret;
1920
1921 if ((enable && port->promisc) || (!enable && !port->promisc))
1922 return;
1923
3faf2693 1924 cb7 = (void *)get_zeroed_page(GFP_ATOMIC);
7a291083
JBT		 1925 if (!cb7) {
1926 ehea_error("no mem for cb7");
1927 goto out;
1928 }
1929
1930 /* Modify Pxs_DUCQPN in CB7 */
1931 cb7->def_uc_qpn = enable == 1 ? port->port_res[0].qp->fw_handle : 0;
1932
1933 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1934 port->logical_port_id,
1935 H_PORT_CB7, H_PORT_CB7_DUCQPN, cb7);
1936 if (hret) {
1937 ehea_promiscuous_error(hret, enable);
1938 goto out;
1939 }
1940
1941 port->promisc = enable;
1942out:
3faf2693 1943 free_page((unsigned long)cb7);
7a291083
JBT		 1944}
1945
1946static u64 ehea_multicast_reg_helper(struct ehea_port *port, u64 mc_mac_addr,
1947 u32 hcallid)
1948{
1949 u64 hret;
1950 u8 reg_type;
1951
1952 reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST
1953 | EHEA_BCMC_UNTAGGED;
1954
1955 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1956 port->logical_port_id,
1957 reg_type, mc_mac_addr, 0, hcallid);
1958 if (hret)
1959 goto out;
1960
1961 reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST
1962 | EHEA_BCMC_VLANID_ALL;
1963
1964 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1965 port->logical_port_id,
1966 reg_type, mc_mac_addr, 0, hcallid);
1967out:
1968 return hret;
1969}
1970
1971static int ehea_drop_multicast_list(struct net_device *dev)
1972{
1973 struct ehea_port *port = netdev_priv(dev);
1974 struct ehea_mc_list *mc_entry = port->mc_list;
1975 struct list_head *pos;
1976 struct list_head *temp;
1977 int ret = 0;
1978 u64 hret;
1979
1980 list_for_each_safe(pos, temp, &(port->mc_list->list)) {
1981 mc_entry = list_entry(pos, struct ehea_mc_list, list);
1982
1983 hret = ehea_multicast_reg_helper(port, mc_entry->macaddr,
1984 H_DEREG_BCMC);
1985 if (hret) {
1986 ehea_error("failed deregistering mcast MAC");
1987 ret = -EIO;
1988 }
1989
1990 list_del(pos);
1991 kfree(mc_entry);
1992 }
1993 return ret;
1994}
1995
1996static void ehea_allmulti(struct net_device *dev, int enable)
1997{
1998 struct ehea_port *port = netdev_priv(dev);
1999 u64 hret;
2000
2001 if (!port->allmulti) {
2002 if (enable) {
2003 /* Enable ALLMULTI */
2004 ehea_drop_multicast_list(dev);
2005 hret = ehea_multicast_reg_helper(port, 0, H_REG_BCMC);
2006 if (!hret)
2007 port->allmulti = 1;
2008 else
2009 ehea_error("failed enabling IFF_ALLMULTI");
2010 }
2011 } else
2012 if (!enable) {
2013 /* Disable ALLMULTI */
2014 hret = ehea_multicast_reg_helper(port, 0, H_DEREG_BCMC);
2015 if (!hret)
2016 port->allmulti = 0;
2017 else
2018 ehea_error("failed disabling IFF_ALLMULTI");
2019 }
2020}
2021
508d2b5d 2022static void ehea_add_multicast_entry(struct ehea_port *port, u8 *mc_mac_addr)
7a291083
JBT		 2023{
2024 struct ehea_mc_list *ehea_mcl_entry;
2025 u64 hret;
2026
1e1675cc 2027 ehea_mcl_entry = kzalloc(sizeof(*ehea_mcl_entry), GFP_ATOMIC);
7a291083
JBT		 2028 if (!ehea_mcl_entry) {
2029 ehea_error("no mem for mcl_entry");
2030 return;
2031 }
2032
2033 INIT_LIST_HEAD(&ehea_mcl_entry->list);
2034
2035 memcpy(&ehea_mcl_entry->macaddr, mc_mac_addr, ETH_ALEN);
2036
2037 hret = ehea_multicast_reg_helper(port, ehea_mcl_entry->macaddr,
2038 H_REG_BCMC);
2039 if (!hret)
2040 list_add(&ehea_mcl_entry->list, &port->mc_list->list);
2041 else {
2042 ehea_error("failed registering mcast MAC");
2043 kfree(ehea_mcl_entry);
2044 }
2045}
2046
2047static void ehea_set_multicast_list(struct net_device *dev)
2048{
2049 struct ehea_port *port = netdev_priv(dev);
22bedad3 2050 struct netdev_hw_addr *ha;
48e2f183 2051 int ret;
7a291083
JBT		 2052
2053 if (dev->flags & IFF_PROMISC) {
2054 ehea_promiscuous(dev, 1);
2055 return;
2056 }
2057 ehea_promiscuous(dev, 0);
2058
2059 if (dev->flags & IFF_ALLMULTI) {
2060 ehea_allmulti(dev, 1);
21eee2dd 2061 goto out;
7a291083
JBT		 2062 }
2063 ehea_allmulti(dev, 0);
2064
4cd24eaf 2065 if (!netdev_mc_empty(dev)) {
7a291083
JBT		 2066 ret = ehea_drop_multicast_list(dev);
2067 if (ret) {
2068 /* Dropping the current multicast list failed.
2069 * Enabling ALL_MULTI is the best we can do.
2070 */
2071 ehea_allmulti(dev, 1);
2072 }
2073
4cd24eaf 2074 if (netdev_mc_count(dev) > port->adapter->max_mc_mac) {
a1c5a893 2075 ehea_info("Mcast registration limit reached (0x%llx). "
7a291083
JBT		 2076 "Use ALLMULTI!",
2077 port->adapter->max_mc_mac);
2078 goto out;
2079 }
2080
22bedad3
JP		 2081 netdev_for_each_mc_addr(ha, dev)
2082 ehea_add_multicast_entry(port, ha->addr);
508d2b5d 2083
7a291083
JBT		 2084 }
2085out:
21eee2dd 2086 ehea_update_bcmc_registrations();
7a291083
JBT		 2087}
2088
2089static int ehea_change_mtu(struct net_device *dev, int new_mtu)
2090{
2091 if ((new_mtu < 68) || (new_mtu > EHEA_MAX_PACKET_SIZE))
2092 return -EINVAL;
2093 dev->mtu = new_mtu;
2094 return 0;
2095}
2096
2097static void ehea_xmit2(struct sk_buff *skb, struct net_device *dev,
2098 struct ehea_swqe *swqe, u32 lkey)
2099{
2100 if (skb->protocol == htons(ETH_P_IP)) {
eddc9ec5 2101 const struct iphdr *iph = ip_hdr(skb);
d1d25aab 2102
7a291083
JBT		 2103 /* IPv4 */
2104 swqe->tx_control |= EHEA_SWQE_CRC
2105 | EHEA_SWQE_IP_CHECKSUM
2106 | EHEA_SWQE_TCP_CHECKSUM
2107 | EHEA_SWQE_IMM_DATA_PRESENT
2108 | EHEA_SWQE_DESCRIPTORS_PRESENT;
2109
2110 write_ip_start_end(swqe, skb);
2111
eddc9ec5 2112 if (iph->protocol == IPPROTO_UDP) {
8e95a202
JP		 2113 if ((iph->frag_off & IP_MF) ||
2114 (iph->frag_off & IP_OFFSET))
7a291083
JBT		 2115 /* IP fragment, so don't change cs */
2116 swqe->tx_control &= ~EHEA_SWQE_TCP_CHECKSUM;
2117 else
2118 write_udp_offset_end(swqe, skb);
eddc9ec5 2119 } else if (iph->protocol == IPPROTO_TCP) {
7a291083
JBT		 2120 write_tcp_offset_end(swqe, skb);
2121 }
2122
2123 /* icmp (big data) and ip segmentation packets (all other ip
2124 packets) do not require any special handling */
2125
2126 } else {
2127 /* Other Ethernet Protocol */
2128 swqe->tx_control |= EHEA_SWQE_CRC
2129 | EHEA_SWQE_IMM_DATA_PRESENT
2130 | EHEA_SWQE_DESCRIPTORS_PRESENT;
2131 }
2132
2133 write_swqe2_data(skb, dev, swqe, lkey);
2134}
2135
2136static void ehea_xmit3(struct sk_buff *skb, struct net_device *dev,
2137 struct ehea_swqe *swqe)
2138{
2139 int nfrags = skb_shinfo(skb)->nr_frags;
2140 u8 *imm_data = &swqe->u.immdata_nodesc.immediate_data[0];
2141 skb_frag_t *frag;
2142 int i;
2143
2144 if (skb->protocol == htons(ETH_P_IP)) {
eddc9ec5 2145 const struct iphdr *iph = ip_hdr(skb);
d1d25aab 2146
7a291083
JBT		 2147 /* IPv4 */
2148 write_ip_start_end(swqe, skb);
2149
eddc9ec5 2150 if (iph->protocol == IPPROTO_TCP) {
7a291083
JBT		 2151 swqe->tx_control |= EHEA_SWQE_CRC
2152 | EHEA_SWQE_IP_CHECKSUM
2153 | EHEA_SWQE_TCP_CHECKSUM
2154 | EHEA_SWQE_IMM_DATA_PRESENT;
2155
2156 write_tcp_offset_end(swqe, skb);
2157
eddc9ec5 2158 } else if (iph->protocol == IPPROTO_UDP) {
8e95a202
JP		 2159 if ((iph->frag_off & IP_MF) ||
2160 (iph->frag_off & IP_OFFSET))
7a291083
JBT		 2161 /* IP fragment, so don't change cs */
2162 swqe->tx_control |= EHEA_SWQE_CRC
2163 | EHEA_SWQE_IMM_DATA_PRESENT;
2164 else {
2165 swqe->tx_control |= EHEA_SWQE_CRC
2166 | EHEA_SWQE_IP_CHECKSUM
2167 | EHEA_SWQE_TCP_CHECKSUM
2168 | EHEA_SWQE_IMM_DATA_PRESENT;
2169
2170 write_udp_offset_end(swqe, skb);
2171 }
2172 } else {
2173 /* icmp (big data) and
2174 ip segmentation packets (all other ip packets) */
2175 swqe->tx_control |= EHEA_SWQE_CRC
2176 | EHEA_SWQE_IP_CHECKSUM
2177 | EHEA_SWQE_IMM_DATA_PRESENT;
2178 }
2179 } else {
2180 /* Other Ethernet Protocol */
2181 swqe->tx_control |= EHEA_SWQE_CRC | EHEA_SWQE_IMM_DATA_PRESENT;
2182 }
2183 /* copy (immediate) data */
2184 if (nfrags == 0) {
2185 /* data is in a single piece */
d626f62b 2186 skb_copy_from_linear_data(skb, imm_data, skb->len);
7a291083
JBT		 2187 } else {
2188 /* first copy data from the skb->data buffer ... */
d626f62b 2189 skb_copy_from_linear_data(skb, imm_data,
e743d313
ED		 2190 skb_headlen(skb));
2191 imm_data += skb_headlen(skb);
7a291083
JBT		 2192
2193 /* ... then copy data from the fragments */
2194 for (i = 0; i < nfrags; i++) {
2195 frag = &skb_shinfo(skb)->frags[i];
2196 memcpy(imm_data,
2197 page_address(frag->page) + frag->page_offset,
2198 frag->size);
2199 imm_data += frag->size;
2200 }
2201 }
2202 swqe->immediate_data_length = skb->len;
2203 dev_kfree_skb(skb);
2204}
2205
18604c54
JBT		 2206static inline int ehea_hash_skb(struct sk_buff *skb, int num_qps)
2207{
2208 struct tcphdr *tcp;
2209 u32 tmp;
2210
2211 if ((skb->protocol == htons(ETH_P_IP)) &&
88ca2d07 2212 (ip_hdr(skb)->protocol == IPPROTO_TCP)) {
508d2b5d
DM		 2213 tcp = (struct tcphdr *)(skb_network_header(skb) +
2214 (ip_hdr(skb)->ihl * 4));
18604c54 2215 tmp = (tcp->source + (tcp->dest << 16)) % 31;
88ca2d07 2216 tmp += ip_hdr(skb)->daddr % 31;
18604c54 2217 return tmp % num_qps;
508d2b5d 2218 } else
18604c54
JBT		 2219 return 0;
2220}
2221
7a291083
JBT		 2222static int ehea_start_xmit(struct sk_buff *skb, struct net_device *dev)
2223{
2224 struct ehea_port *port = netdev_priv(dev);
2225 struct ehea_swqe *swqe;
2226 unsigned long flags;
2227 u32 lkey;
2228 int swqe_index;
18604c54
JBT		 2229 struct ehea_port_res *pr;
2230
2231 pr = &port->port_res[ehea_hash_skb(skb, port->num_tx_qps)];
2232
18604c54
JBT		 2233 if (!spin_trylock(&pr->xmit_lock))
2234 return NETDEV_TX_BUSY;
2235
2236 if (pr->queue_stopped) {
2237 spin_unlock(&pr->xmit_lock);
2238 return NETDEV_TX_BUSY;
2239 }
7a291083
JBT		 2240
2241 swqe = ehea_get_swqe(pr->qp, &swqe_index);
2242 memset(swqe, 0, SWQE_HEADER_SIZE);
2243 atomic_dec(&pr->swqe_avail);
2244
2245 if (skb->len <= SWQE3_MAX_IMM) {
2246 u32 sig_iv = port->sig_comp_iv;
2247 u32 swqe_num = pr->swqe_id_counter;
2248 ehea_xmit3(skb, dev, swqe);
2249 swqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE3_TYPE)
2250 | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, swqe_num);
2251 if (pr->swqe_ll_count >= (sig_iv - 1)) {
2252 swqe->wr_id |= EHEA_BMASK_SET(EHEA_WR_ID_REFILL,
2253 sig_iv);
2254 swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
2255 pr->swqe_ll_count = 0;
2256 } else
2257 pr->swqe_ll_count += 1;
2258 } else {
2259 swqe->wr_id =
2260 EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE2_TYPE)
2261 | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, pr->swqe_id_counter)
acbddb59 2262 | EHEA_BMASK_SET(EHEA_WR_ID_REFILL, 1)
7a291083
JBT		 2263 | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, pr->sq_skba.index);
2264 pr->sq_skba.arr[pr->sq_skba.index] = skb;
2265
2266 pr->sq_skba.index++;
2267 pr->sq_skba.index &= (pr->sq_skba.len - 1);
2268
2269 lkey = pr->send_mr.lkey;
2270 ehea_xmit2(skb, dev, swqe, lkey);
acbddb59 2271 swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
7a291083
JBT		 2272 }
2273 pr->swqe_id_counter += 1;
2274
2275 if (port->vgrp && vlan_tx_tag_present(skb)) {
2276 swqe->tx_control |= EHEA_SWQE_VLAN_INSERT;
2277 swqe->vlan_tag = vlan_tx_tag_get(skb);
2278 }
2279
2280 if (netif_msg_tx_queued(port)) {
2281 ehea_info("post swqe on QP %d", pr->qp->init_attr.qp_nr);
bff0a55f 2282 ehea_dump(swqe, 512, "swqe");
7a291083
JBT		 2283 }
2284
2c69448b
JBT		 2285 if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) {
2286 netif_stop_queue(dev);
2287 swqe->tx_control |= EHEA_SWQE_PURGE;
2288 }
44c82152 2289
7a291083 2290 ehea_post_swqe(pr->qp, swqe);
7393b87c 2291 pr->tx_packets++;
7a291083
JBT		 2292
2293 if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) {
2294 spin_lock_irqsave(&pr->netif_queue, flags);
2295 if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) {
acbddb59 2296 pr->p_stats.queue_stopped++;
7a291083
JBT		 2297 netif_stop_queue(dev);
2298 pr->queue_stopped = 1;
2299 }
2300 spin_unlock_irqrestore(&pr->netif_queue, flags);
2301 }
1ae5dc34 2302 dev->trans_start = jiffies; /* NETIF_F_LLTX driver :( */
7a291083 2303 spin_unlock(&pr->xmit_lock);
2c69448b 2304
7a291083
JBT		 2305 return NETDEV_TX_OK;
2306}
2307
2308static void ehea_vlan_rx_register(struct net_device *dev,
2309 struct vlan_group *grp)
2310{
2311 struct ehea_port *port = netdev_priv(dev);
2312 struct ehea_adapter *adapter = port->adapter;
2313 struct hcp_ehea_port_cb1 *cb1;
2314 u64 hret;
2315
2316 port->vgrp = grp;
2317
3faf2693 2318 cb1 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083
JBT		 2319 if (!cb1) {
2320 ehea_error("no mem for cb1");
2321 goto out;
2322 }
2323
7a291083
JBT		 2324 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
2325 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2326 if (hret != H_SUCCESS)
2327 ehea_error("modify_ehea_port failed");
2328
3faf2693 2329 free_page((unsigned long)cb1);
7a291083
JBT		 2330out:
2331 return;
2332}
2333
2334static void ehea_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
2335{
2336 struct ehea_port *port = netdev_priv(dev);
2337 struct ehea_adapter *adapter = port->adapter;
2338 struct hcp_ehea_port_cb1 *cb1;
2339 int index;
2340 u64 hret;
2341
3faf2693 2342 cb1 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083
JBT		 2343 if (!cb1) {
2344 ehea_error("no mem for cb1");
2345 goto out;
2346 }
2347
2348 hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
2349 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2350 if (hret != H_SUCCESS) {
2351 ehea_error("query_ehea_port failed");
2352 goto out;
2353 }
2354
2355 index = (vid / 64);
dec590c1 2356 cb1->vlan_filter[index] |= ((u64)(0x8000000000000000 >> (vid & 0x3F)));
7a291083
JBT		 2357
2358 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
2359 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2360 if (hret != H_SUCCESS)
2361 ehea_error("modify_ehea_port failed");
2362out:
3faf2693 2363 free_page((unsigned long)cb1);
7a291083
JBT		 2364 return;
2365}
2366
2367static void ehea_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
2368{
2369 struct ehea_port *port = netdev_priv(dev);
2370 struct ehea_adapter *adapter = port->adapter;
2371 struct hcp_ehea_port_cb1 *cb1;
2372 int index;
2373 u64 hret;
2374
5c15bdec 2375 vlan_group_set_device(port->vgrp, vid, NULL);
7a291083 2376
3faf2693 2377 cb1 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083
JBT		 2378 if (!cb1) {
2379 ehea_error("no mem for cb1");
2380 goto out;
2381 }
2382
2383 hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
2384 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2385 if (hret != H_SUCCESS) {
2386 ehea_error("query_ehea_port failed");
2387 goto out;
2388 }
2389
2390 index = (vid / 64);
dec590c1 2391 cb1->vlan_filter[index] &= ~((u64)(0x8000000000000000 >> (vid & 0x3F)));
7a291083
JBT		 2392
2393 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
2394 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2395 if (hret != H_SUCCESS)
2396 ehea_error("modify_ehea_port failed");
2397out:
3faf2693 2398 free_page((unsigned long)cb1);
7a291083
JBT		 2399}
2400
2401int ehea_activate_qp(struct ehea_adapter *adapter, struct ehea_qp *qp)
2402{
2403 int ret = -EIO;
2404 u64 hret;
2405 u16 dummy16 = 0;
2406 u64 dummy64 = 0;
508d2b5d 2407 struct hcp_modify_qp_cb0 *cb0;
7a291083 2408
3faf2693 2409 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083
JBT		 2410 if (!cb0) {
2411 ret = -ENOMEM;
2412 goto out;
2413 }
2414
2415 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2416 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2417 if (hret != H_SUCCESS) {
2418 ehea_error("query_ehea_qp failed (1)");
2419 goto out;
2420 }
2421
2422 cb0->qp_ctl_reg = H_QP_CR_STATE_INITIALIZED;
2423 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2424 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2425 &dummy64, &dummy64, &dummy16, &dummy16);
2426 if (hret != H_SUCCESS) {
2427 ehea_error("modify_ehea_qp failed (1)");
2428 goto out;
2429 }
2430
2431 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2432 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2433 if (hret != H_SUCCESS) {
2434 ehea_error("query_ehea_qp failed (2)");
2435 goto out;
2436 }
2437
2438 cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_INITIALIZED;
2439 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2440 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2441 &dummy64, &dummy64, &dummy16, &dummy16);
2442 if (hret != H_SUCCESS) {
2443 ehea_error("modify_ehea_qp failed (2)");
2444 goto out;
2445 }
2446
2447 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2448 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2449 if (hret != H_SUCCESS) {
2450 ehea_error("query_ehea_qp failed (3)");
2451 goto out;
2452 }
2453
2454 cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_RDY2SND;
2455 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2456 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2457 &dummy64, &dummy64, &dummy16, &dummy16);
2458 if (hret != H_SUCCESS) {
2459 ehea_error("modify_ehea_qp failed (3)");
2460 goto out;
2461 }
2462
2463 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2464 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2465 if (hret != H_SUCCESS) {
2466 ehea_error("query_ehea_qp failed (4)");
2467 goto out;
2468 }
2469
2470 ret = 0;
2471out:
3faf2693 2472 free_page((unsigned long)cb0);
7a291083
JBT		 2473 return ret;
2474}
2475
2476static int ehea_port_res_setup(struct ehea_port *port, int def_qps,
2477 int add_tx_qps)
2478{
2479 int ret, i;
2480 struct port_res_cfg pr_cfg, pr_cfg_small_rx;
2481 enum ehea_eq_type eq_type = EHEA_EQ;
2482
2483 port->qp_eq = ehea_create_eq(port->adapter, eq_type,
2484 EHEA_MAX_ENTRIES_EQ, 1);
2485 if (!port->qp_eq) {
2486 ret = -EINVAL;
2487 ehea_error("ehea_create_eq failed (qp_eq)");
2488 goto out_kill_eq;
2489 }
2490
2491 pr_cfg.max_entries_rcq = rq1_entries + rq2_entries + rq3_entries;
18604c54 2492 pr_cfg.max_entries_scq = sq_entries * 2;
7a291083
JBT		 2493 pr_cfg.max_entries_sq = sq_entries;
2494 pr_cfg.max_entries_rq1 = rq1_entries;
2495 pr_cfg.max_entries_rq2 = rq2_entries;
2496 pr_cfg.max_entries_rq3 = rq3_entries;
2497
2498 pr_cfg_small_rx.max_entries_rcq = 1;
2499 pr_cfg_small_rx.max_entries_scq = sq_entries;
2500 pr_cfg_small_rx.max_entries_sq = sq_entries;
2501 pr_cfg_small_rx.max_entries_rq1 = 1;
2502 pr_cfg_small_rx.max_entries_rq2 = 1;
2503 pr_cfg_small_rx.max_entries_rq3 = 1;
2504
2505 for (i = 0; i < def_qps; i++) {
2506 ret = ehea_init_port_res(port, &port->port_res[i], &pr_cfg, i);
2507 if (ret)
2508 goto out_clean_pr;
2509 }
2510 for (i = def_qps; i < def_qps + add_tx_qps; i++) {
2511 ret = ehea_init_port_res(port, &port->port_res[i],
2512 &pr_cfg_small_rx, i);
2513 if (ret)
2514 goto out_clean_pr;
2515 }
2516
2517 return 0;
2518
2519out_clean_pr:
2520 while (--i >= 0)
2521 ehea_clean_portres(port, &port->port_res[i]);
2522
2523out_kill_eq:
2524 ehea_destroy_eq(port->qp_eq);
2525 return ret;
2526}
2527
2528static int ehea_clean_all_portres(struct ehea_port *port)
2529{
2530 int ret = 0;
2531 int i;
2532
508d2b5d 2533 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
7a291083
JBT		 2534 ret |= ehea_clean_portres(port, &port->port_res[i]);
2535
2536 ret |= ehea_destroy_eq(port->qp_eq);
2537
2538 return ret;
2539}
2540
35cf2e2e 2541static void ehea_remove_adapter_mr(struct ehea_adapter *adapter)
1211bb6d 2542{
35cf2e2e
TK		 2543 if (adapter->active_ports)
2544 return;
1211bb6d
TK		 2545
2546 ehea_rem_mr(&adapter->mr);
2547}
2548
35cf2e2e 2549static int ehea_add_adapter_mr(struct ehea_adapter *adapter)
1211bb6d 2550{
35cf2e2e
TK		 2551 if (adapter->active_ports)
2552 return 0;
1211bb6d
TK		 2553
2554 return ehea_reg_kernel_mr(adapter, &adapter->mr);
2555}
2556
7a291083
JBT		 2557static int ehea_up(struct net_device *dev)
2558{
2559 int ret, i;
2560 struct ehea_port *port = netdev_priv(dev);
7a291083
JBT		 2561
2562 if (port->state == EHEA_PORT_UP)
2563 return 0;
2564
2565 ret = ehea_port_res_setup(port, port->num_def_qps,
2566 port->num_add_tx_qps);
2567 if (ret) {
2568 ehea_error("port_res_failed");
2569 goto out;
2570 }
2571
2572 /* Set default QP for this port */
2573 ret = ehea_configure_port(port);
2574 if (ret) {
2575 ehea_error("ehea_configure_port failed. ret:%d", ret);
2576 goto out_clean_pr;
2577 }
2578
7a291083
JBT		 2579 ret = ehea_reg_interrupts(dev);
2580 if (ret) {
f9e29228
TK		 2581 ehea_error("reg_interrupts failed. ret:%d", ret);
2582 goto out_clean_pr;
7a291083
JBT		 2583 }
2584
508d2b5d 2585 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
7a291083
JBT		 2586 ret = ehea_activate_qp(port->adapter, port->port_res[i].qp);
2587 if (ret) {
2588 ehea_error("activate_qp failed");
2589 goto out_free_irqs;
2590 }
2591 }
2592
508d2b5d 2593 for (i = 0; i < port->num_def_qps; i++) {
7a291083
JBT		 2594 ret = ehea_fill_port_res(&port->port_res[i]);
2595 if (ret) {
2596 ehea_error("out_free_irqs");
2597 goto out_free_irqs;
2598 }
2599 }
2600
21eee2dd
TK		 2601 ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
2602 if (ret) {
2603 ret = -EIO;
2604 goto out_free_irqs;
2605 }
2606
7a291083 2607 port->state = EHEA_PORT_UP;
21eee2dd
TK		 2608
2609 ret = 0;
7a291083
JBT		 2610 goto out;
2611
2612out_free_irqs:
2613 ehea_free_interrupts(dev);
2614
7a291083
JBT		 2615out_clean_pr:
2616 ehea_clean_all_portres(port);
2617out:
44c82152
TK		 2618 if (ret)
2619 ehea_info("Failed starting %s. ret=%i", dev->name, ret);
2620
21eee2dd 2621 ehea_update_bcmc_registrations();
21eee2dd 2622 ehea_update_firmware_handles();
21eee2dd 2623
7a291083
JBT		 2624 return ret;
2625}
2626
bea3348e
SH		 2627static void port_napi_disable(struct ehea_port *port)
2628{
2629 int i;
2630
0173b793 2631 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
bea3348e
SH		 2632 napi_disable(&port->port_res[i].napi);
2633}
2634
2635static void port_napi_enable(struct ehea_port *port)
2636{
2637 int i;
2638
0173b793 2639 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
bea3348e
SH		 2640 napi_enable(&port->port_res[i].napi);
2641}
2642
7a291083
JBT		 2643static int ehea_open(struct net_device *dev)
2644{
2645 int ret;
2646 struct ehea_port *port = netdev_priv(dev);
2647
a5af6ad3 2648 mutex_lock(&port->port_lock);
7a291083
JBT		 2649
2650 if (netif_msg_ifup(port))
2651 ehea_info("enabling port %s", dev->name);
2652
2653 ret = ehea_up(dev);
bea3348e
SH		 2654 if (!ret) {
2655 port_napi_enable(port);
7a291083 2656 netif_start_queue(dev);
bea3348e 2657 }
7a291083 2658
5b27d427 2659 init_waitqueue_head(&port->swqe_avail_wq);
a8bb69f7 2660 init_waitqueue_head(&port->restart_wq);
5b27d427 2661
a5af6ad3 2662 mutex_unlock(&port->port_lock);
7a291083
JBT		 2663
2664 return ret;
2665}
2666
2667static int ehea_down(struct net_device *dev)
2668{
bea3348e 2669 int ret;
7a291083
JBT		 2670 struct ehea_port *port = netdev_priv(dev);
2671
2672 if (port->state == EHEA_PORT_DOWN)
2673 return 0;
2674
2675 ehea_drop_multicast_list(dev);
21eee2dd
TK		 2676 ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
2677
7a291083
JBT		 2678 ehea_free_interrupts(dev);
2679
7a291083 2680 port->state = EHEA_PORT_DOWN;
44c82152 2681
21eee2dd 2682 ehea_update_bcmc_registrations();
21eee2dd 2683
44c82152
TK		 2684 ret = ehea_clean_all_portres(port);
2685 if (ret)
2686 ehea_info("Failed freeing resources for %s. ret=%i",
2687 dev->name, ret);
2688
21eee2dd 2689 ehea_update_firmware_handles();
21eee2dd 2690
7a291083
JBT		 2691 return ret;
2692}
2693
2694static int ehea_stop(struct net_device *dev)
2695{
2696 int ret;
2697 struct ehea_port *port = netdev_priv(dev);
2698
2699 if (netif_msg_ifdown(port))
2700 ehea_info("disabling port %s", dev->name);
2701
2f69ae01 2702 set_bit(__EHEA_DISABLE_PORT_RESET, &port->flags);
4bb073c0 2703 cancel_work_sync(&port->reset_task);
a5af6ad3 2704 mutex_lock(&port->port_lock);
7a291083 2705 netif_stop_queue(dev);
0173b793 2706 port_napi_disable(port);
7a291083 2707 ret = ehea_down(dev);
a5af6ad3 2708 mutex_unlock(&port->port_lock);
2f69ae01 2709 clear_bit(__EHEA_DISABLE_PORT_RESET, &port->flags);
7a291083
JBT		 2710 return ret;
2711}
2712
22559c5d 2713static void ehea_purge_sq(struct ehea_qp *orig_qp)
2c69448b
JBT		 2714{
2715 struct ehea_qp qp = *orig_qp;
2716 struct ehea_qp_init_attr *init_attr = &qp.init_attr;
2717 struct ehea_swqe *swqe;
2718 int wqe_index;
2719 int i;
2720
2721 for (i = 0; i < init_attr->act_nr_send_wqes; i++) {
2722 swqe = ehea_get_swqe(&qp, &wqe_index);
2723 swqe->tx_control |= EHEA_SWQE_PURGE;
2724 }
2725}
2726
22559c5d 2727static void ehea_flush_sq(struct ehea_port *port)
44fb3126
TK		 2728{
2729 int i;
2730
2731 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
2732 struct ehea_port_res *pr = &port->port_res[i];
2733 int swqe_max = pr->sq_skba_size - 2 - pr->swqe_ll_count;
5b27d427
BL		 2734 int ret;
2735
2736 ret = wait_event_timeout(port->swqe_avail_wq,
2737 atomic_read(&pr->swqe_avail) >= swqe_max,
2738 msecs_to_jiffies(100));
2739
2740 if (!ret) {
2741 ehea_error("WARNING: sq not flushed completely");
2742 break;
44fb3126
TK		 2743 }
2744 }
2745}
2746
2c69448b
JBT		 2747int ehea_stop_qps(struct net_device *dev)
2748{
2749 struct ehea_port *port = netdev_priv(dev);
2750 struct ehea_adapter *adapter = port->adapter;
508d2b5d 2751 struct hcp_modify_qp_cb0 *cb0;
2c69448b
JBT		 2752 int ret = -EIO;
2753 int dret;
2754 int i;
2755 u64 hret;
2756 u64 dummy64 = 0;
2757 u16 dummy16 = 0;
2758
3faf2693 2759 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
2c69448b
JBT		 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 /* Purge send queue */
2770 ehea_purge_sq(qp);
2771
2772 /* Disable queue pair */
2773 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2774 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2775 cb0);
2776 if (hret != H_SUCCESS) {
2777 ehea_error("query_ehea_qp failed (1)");
2778 goto out;
2779 }
2780
2781 cb0->qp_ctl_reg = (cb0->qp_ctl_reg & H_QP_CR_RES_STATE) << 8;
2782 cb0->qp_ctl_reg &= ~H_QP_CR_ENABLED;
2783
2784 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2785 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG,
2786 1), cb0, &dummy64,
2787 &dummy64, &dummy16, &dummy16);
2788 if (hret != H_SUCCESS) {
2789 ehea_error("modify_ehea_qp failed (1)");
2790 goto out;
2791 }
2792
2793 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2794 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2795 cb0);
2796 if (hret != H_SUCCESS) {
2797 ehea_error("query_ehea_qp failed (2)");
2798 goto out;
2799 }
2800
2801 /* deregister shared memory regions */
2802 dret = ehea_rem_smrs(pr);
2803 if (dret) {
2804 ehea_error("unreg shared memory region failed");
2805 goto out;
2806 }
2807 }
2808
2809 ret = 0;
2810out:
3faf2693 2811 free_page((unsigned long)cb0);
2c69448b
JBT		 2812
2813 return ret;
2814}
2815
508d2b5d 2816void ehea_update_rqs(struct ehea_qp *orig_qp, struct ehea_port_res *pr)
2c69448b
JBT		 2817{
2818 struct ehea_qp qp = *orig_qp;
2819 struct ehea_qp_init_attr *init_attr = &qp.init_attr;
2820 struct ehea_rwqe *rwqe;
2821 struct sk_buff **skba_rq2 = pr->rq2_skba.arr;
2822 struct sk_buff **skba_rq3 = pr->rq3_skba.arr;
2823 struct sk_buff *skb;
2824 u32 lkey = pr->recv_mr.lkey;
2825
2826
2827 int i;
2828 int index;
2829
2830 for (i = 0; i < init_attr->act_nr_rwqes_rq2 + 1; i++) {
2831 rwqe = ehea_get_next_rwqe(&qp, 2);
2832 rwqe->sg_list[0].l_key = lkey;
2833 index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, rwqe->wr_id);
2834 skb = skba_rq2[index];
2835 if (skb)
2836 rwqe->sg_list[0].vaddr = ehea_map_vaddr(skb->data);
2837 }
2838
2839 for (i = 0; i < init_attr->act_nr_rwqes_rq3 + 1; i++) {
2840 rwqe = ehea_get_next_rwqe(&qp, 3);
2841 rwqe->sg_list[0].l_key = lkey;
2842 index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, rwqe->wr_id);
2843 skb = skba_rq3[index];
2844 if (skb)
2845 rwqe->sg_list[0].vaddr = ehea_map_vaddr(skb->data);
2846 }
2847}
2848
2849int ehea_restart_qps(struct net_device *dev)
2850{
2851 struct ehea_port *port = netdev_priv(dev);
2852 struct ehea_adapter *adapter = port->adapter;
2853 int ret = 0;
2854 int i;
2855
508d2b5d 2856 struct hcp_modify_qp_cb0 *cb0;
2c69448b
JBT		 2857 u64 hret;
2858 u64 dummy64 = 0;
2859 u16 dummy16 = 0;
2860
3faf2693 2861 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
2c69448b
JBT		 2862 if (!cb0) {
2863 ret = -ENOMEM;
2864 goto out;
2865 }
2866
2867 for (i = 0; i < (port->num_def_qps + port->num_add_tx_qps); i++) {
2868 struct ehea_port_res *pr = &port->port_res[i];
2869 struct ehea_qp *qp = pr->qp;
2870
2871 ret = ehea_gen_smrs(pr);
2872 if (ret) {
2873 ehea_error("creation of shared memory regions failed");
2874 goto out;
2875 }
2876
2877 ehea_update_rqs(qp, pr);
2878
2879 /* Enable queue pair */
2880 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2881 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2882 cb0);
2883 if (hret != H_SUCCESS) {
2884 ehea_error("query_ehea_qp failed (1)");
2885 goto out;
2886 }
2887
2888 cb0->qp_ctl_reg = (cb0->qp_ctl_reg & H_QP_CR_RES_STATE) << 8;
2889 cb0->qp_ctl_reg |= H_QP_CR_ENABLED;
2890
2891 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2892 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG,
2893 1), cb0, &dummy64,
2894 &dummy64, &dummy16, &dummy16);
2895 if (hret != H_SUCCESS) {
2896 ehea_error("modify_ehea_qp failed (1)");
2897 goto out;
2898 }
2899
2900 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2901 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2902 cb0);
2903 if (hret != H_SUCCESS) {
2904 ehea_error("query_ehea_qp failed (2)");
2905 goto out;
2906 }
2907
2908 /* refill entire queue */
2909 ehea_refill_rq1(pr, pr->rq1_skba.index, 0);
2910 ehea_refill_rq2(pr, 0);
2911 ehea_refill_rq3(pr, 0);
2912 }
2913out:
3faf2693 2914 free_page((unsigned long)cb0);
2c69448b
JBT		 2915
2916 return ret;
2917}
2918
c4028958 2919static void ehea_reset_port(struct work_struct *work)
7a291083
JBT		 2920{
2921 int ret;
c4028958
DH		 2922 struct ehea_port *port =
2923 container_of(work, struct ehea_port, reset_task);
2924 struct net_device *dev = port->netdev;
7a291083 2925
099473c1 2926 mutex_lock(&dlpar_mem_lock);
7a291083 2927 port->resets++;
a5af6ad3 2928 mutex_lock(&port->port_lock);
7a291083 2929 netif_stop_queue(dev);
bea3348e
SH		 2930
2931 port_napi_disable(port);
7a291083 2932
44c82152 2933 ehea_down(dev);
7a291083
JBT		 2934
2935 ret = ehea_up(dev);
44c82152 2936 if (ret)
7a291083 2937 goto out;
7a291083 2938
2c69448b
JBT		 2939 ehea_set_multicast_list(dev);
2940
7a291083
JBT		 2941 if (netif_msg_timer(port))
2942 ehea_info("Device %s resetted successfully", dev->name);
2943
bea3348e
SH		 2944 port_napi_enable(port);
2945
7a291083
JBT		 2946 netif_wake_queue(dev);
2947out:
a5af6ad3 2948 mutex_unlock(&port->port_lock);
099473c1 2949 mutex_unlock(&dlpar_mem_lock);
7a291083
JBT		 2950}
2951
44c82152
TK		 2952static void ehea_rereg_mrs(struct work_struct *work)
2953{
2954 int ret, i;
2955 struct ehea_adapter *adapter;
2956
d4f12daf 2957 ehea_info("LPAR memory changed - re-initializing driver");
44c82152
TK		 2958
2959 list_for_each_entry(adapter, &adapter_list, list)
2960 if (adapter->active_ports) {
2961 /* Shutdown all ports */
2962 for (i = 0; i < EHEA_MAX_PORTS; i++) {
2963 struct ehea_port *port = adapter->port[i];
a5af6ad3 2964 struct net_device *dev;
44c82152 2965
a5af6ad3
DW		 2966 if (!port)
2967 continue;
44c82152 2968
a5af6ad3
DW		 2969 dev = port->netdev;
2970
2971 if (dev->flags & IFF_UP) {
2972 mutex_lock(&port->port_lock);
2973 netif_stop_queue(dev);
df39e8ba 2974 ehea_flush_sq(port);
a5af6ad3
DW		 2975 ret = ehea_stop_qps(dev);
2976 if (ret) {
2977 mutex_unlock(&port->port_lock);
2978 goto out;
44c82152 2979 }
a5af6ad3
DW		 2980 port_napi_disable(port);
2981 mutex_unlock(&port->port_lock);
44c82152 2982 }
2928db4c 2983 reset_sq_restart_flag(port);
44c82152
TK		 2984 }
2985
2986 /* Unregister old memory region */
2987 ret = ehea_rem_mr(&adapter->mr);
2988 if (ret) {
2989 ehea_error("unregister MR failed - driver"
2990 " inoperable!");
2991 goto out;
2992 }
2993 }
2994
44c82152
TK		 2995 clear_bit(__EHEA_STOP_XFER, &ehea_driver_flags);
2996
2997 list_for_each_entry(adapter, &adapter_list, list)
2998 if (adapter->active_ports) {
2999 /* Register new memory region */
3000 ret = ehea_reg_kernel_mr(adapter, &adapter->mr);
3001 if (ret) {
3002 ehea_error("register MR failed - driver"
3003 " inoperable!");
3004 goto out;
3005 }
3006
3007 /* Restart all ports */
3008 for (i = 0; i < EHEA_MAX_PORTS; i++) {
3009 struct ehea_port *port = adapter->port[i];
3010
3011 if (port) {
3012 struct net_device *dev = port->netdev;
3013
3014 if (dev->flags & IFF_UP) {
a5af6ad3 3015 mutex_lock(&port->port_lock);
2c69448b
JBT		 3016 port_napi_enable(port);
3017 ret = ehea_restart_qps(dev);
2928db4c 3018 check_sqs(port);
2c69448b 3019 if (!ret)
44c82152 3020 netif_wake_queue(dev);
a5af6ad3 3021 mutex_unlock(&port->port_lock);
44c82152
TK		 3022 }
3023 }
3024 }
3025 }
68905eb4 3026 ehea_info("re-initializing driver complete");
44c82152
TK		 3027out:
3028 return;
3029}
3030
7a291083
JBT		 3031static void ehea_tx_watchdog(struct net_device *dev)
3032{
3033 struct ehea_port *port = netdev_priv(dev);
3034
2c69448b
JBT		 3035 if (netif_carrier_ok(dev) &&
3036 !test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))
2f69ae01 3037 ehea_schedule_port_reset(port);
7a291083
JBT		 3038}
3039
3040int ehea_sense_adapter_attr(struct ehea_adapter *adapter)
3041{
3042 struct hcp_query_ehea *cb;
3043 u64 hret;
3044 int ret;
3045
3faf2693 3046 cb = (void *)get_zeroed_page(GFP_KERNEL);
7a291083
JBT		 3047 if (!cb) {
3048 ret = -ENOMEM;
3049 goto out;
3050 }
3051
3052 hret = ehea_h_query_ehea(adapter->handle, cb);
3053
3054 if (hret != H_SUCCESS) {
3055 ret = -EIO;
3056 goto out_herr;
3057 }
3058
7a291083
JBT		 3059 adapter->max_mc_mac = cb->max_mc_mac - 1;
3060 ret = 0;
3061
3062out_herr:
3faf2693 3063 free_page((unsigned long)cb);
7a291083
JBT		 3064out:
3065 return ret;
3066}
3067
1acf2318 3068int ehea_get_jumboframe_status(struct ehea_port *port, int *jumbo)
7a291083 3069{
7a291083 3070 struct hcp_ehea_port_cb4 *cb4;
1acf2318
JBT		 3071 u64 hret;
3072 int ret = 0;
7a291083 3073
1acf2318 3074 *jumbo = 0;
7a291083 3075
1acf2318 3076 /* (Try to) enable *jumbo frames */
3faf2693 3077 cb4 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083
JBT		 3078 if (!cb4) {
3079 ehea_error("no mem for cb4");
1acf2318
JBT		 3080 ret = -ENOMEM;
3081 goto out;
7a291083 3082 } else {
1acf2318 3083 hret = ehea_h_query_ehea_port(port->adapter->handle,
9c750b7d
TK		 3084 port->logical_port_id,
3085 H_PORT_CB4,
3086 H_PORT_CB4_JUMBO, cb4);
9c750b7d
TK		 3087 if (hret == H_SUCCESS) {
3088 if (cb4->jumbo_frame)
1acf2318 3089 *jumbo = 1;
9c750b7d
TK		 3090 else {
3091 cb4->jumbo_frame = 1;
1acf2318
JBT		 3092 hret = ehea_h_modify_ehea_port(port->adapter->
3093 handle,
9c750b7d 3094 port->
1acf2318 3095 logical_port_id,
9c750b7d
TK		 3096 H_PORT_CB4,
3097 H_PORT_CB4_JUMBO,
3098 cb4);
3099 if (hret == H_SUCCESS)
1acf2318 3100 *jumbo = 1;
9c750b7d 3101 }
1acf2318
JBT		 3102 } else
3103 ret = -EINVAL;
3104
3faf2693 3105 free_page((unsigned long)cb4);
7a291083 3106 }
1acf2318
JBT		 3107out:
3108 return ret;
3109}
3110
3111static ssize_t ehea_show_port_id(struct device *dev,
3112 struct device_attribute *attr, char *buf)
3113{
3114 struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev);
a8e34fda 3115 return sprintf(buf, "%d", port->logical_port_id);
1acf2318
JBT		 3116}
3117
3118static DEVICE_ATTR(log_port_id, S_IRUSR | S_IRGRP | S_IROTH, ehea_show_port_id,
3119 NULL);
3120
3121static void __devinit logical_port_release(struct device *dev)
3122{
3123 struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev);
61c7a080 3124 of_node_put(port->ofdev.dev.of_node);
1acf2318
JBT		 3125}
3126
3127static struct device *ehea_register_port(struct ehea_port *port,
3128 struct device_node *dn)
3129{
3130 int ret;
3131
61c7a080 3132 port->ofdev.dev.of_node = of_node_get(dn);
6b08f3ae 3133 port->ofdev.dev.parent = &port->adapter->ofdev->dev;
d1dea38d 3134 port->ofdev.dev.bus = &ibmebus_bus_type;
1acf2318 3135
db1d7bf7 3136 dev_set_name(&port->ofdev.dev, "port%d", port_name_cnt++);
1acf2318
JBT		 3137 port->ofdev.dev.release = logical_port_release;
3138
3139 ret = of_device_register(&port->ofdev);
3140 if (ret) {
3141 ehea_error("failed to register device. ret=%d", ret);
3142 goto out;
3143 }
3144
3145 ret = device_create_file(&port->ofdev.dev, &dev_attr_log_port_id);
d1d25aab 3146 if (ret) {
1acf2318
JBT		 3147 ehea_error("failed to register attributes, ret=%d", ret);
3148 goto out_unreg_of_dev;
3149 }
e542aa6b 3150
1acf2318
JBT		 3151 return &port->ofdev.dev;
3152
3153out_unreg_of_dev:
3154 of_device_unregister(&port->ofdev);
3155out:
3156 return NULL;
3157}
3158
3159static void ehea_unregister_port(struct ehea_port *port)
3160{
3161 device_remove_file(&port->ofdev.dev, &dev_attr_log_port_id);
3162 of_device_unregister(&port->ofdev);
3163}
3164
086c1b2c
TK		 3165static const struct net_device_ops ehea_netdev_ops = {
3166 .ndo_open = ehea_open,
3167 .ndo_stop = ehea_stop,
3168 .ndo_start_xmit = ehea_start_xmit,
3169#ifdef CONFIG_NET_POLL_CONTROLLER
3170 .ndo_poll_controller = ehea_netpoll,
3171#endif
3172 .ndo_get_stats = ehea_get_stats,
3173 .ndo_set_mac_address = ehea_set_mac_addr,
240c102d 3174 .ndo_validate_addr = eth_validate_addr,
086c1b2c
TK		 3175 .ndo_set_multicast_list = ehea_set_multicast_list,
3176 .ndo_change_mtu = ehea_change_mtu,
3177 .ndo_vlan_rx_register = ehea_vlan_rx_register,
3178 .ndo_vlan_rx_add_vid = ehea_vlan_rx_add_vid,
32e8f9a8
AB		 3179 .ndo_vlan_rx_kill_vid = ehea_vlan_rx_kill_vid,
3180 .ndo_tx_timeout = ehea_tx_watchdog,
086c1b2c
TK		 3181};
3182
1acf2318
JBT		 3183struct ehea_port *ehea_setup_single_port(struct ehea_adapter *adapter,
3184 u32 logical_port_id,
3185 struct device_node *dn)
3186{
3187 int ret;
3188 struct net_device *dev;
3189 struct ehea_port *port;
3190 struct device *port_dev;
3191 int jumbo;
3192
3193 /* allocate memory for the port structures */
3194 dev = alloc_etherdev(sizeof(struct ehea_port));
3195
3196 if (!dev) {
3197 ehea_error("no mem for net_device");
3198 ret = -ENOMEM;
3199 goto out_err;
3200 }
3201
3202 port = netdev_priv(dev);
3203
a5af6ad3 3204 mutex_init(&port->port_lock);
1acf2318
JBT		 3205 port->state = EHEA_PORT_DOWN;
3206 port->sig_comp_iv = sq_entries / 10;
3207
3208 port->adapter = adapter;
3209 port->netdev = dev;
3210 port->logical_port_id = logical_port_id;
3211
3212 port->msg_enable = netif_msg_init(msg_level, EHEA_MSG_DEFAULT);
3213
3214 port->mc_list = kzalloc(sizeof(struct ehea_mc_list), GFP_KERNEL);
3215 if (!port->mc_list) {
3216 ret = -ENOMEM;
3217 goto out_free_ethdev;
3218 }
3219
3220 INIT_LIST_HEAD(&port->mc_list->list);
3221
3222 ret = ehea_sense_port_attr(port);
3223 if (ret)
3224 goto out_free_mc_list;
3225
3226 port_dev = ehea_register_port(port, dn);
3227 if (!port_dev)
3228 goto out_free_mc_list;
3229
3230 SET_NETDEV_DEV(dev, port_dev);
7a291083
JBT		 3231
3232 /* initialize net_device structure */
7a291083
JBT		 3233 memcpy(dev->dev_addr, &port->mac_addr, ETH_ALEN);
3234
086c1b2c
TK		 3235 dev->netdev_ops = &ehea_netdev_ops;
3236 ehea_set_ethtool_ops(dev);
3237
7a291083 3238 dev->features = NETIF_F_SG | NETIF_F_FRAGLIST | NETIF_F_TSO
dc01c447 3239 | NETIF_F_HIGHDMA | NETIF_F_IP_CSUM | NETIF_F_HW_VLAN_TX
7a291083
JBT		 3240 | NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_FILTER
3241 | NETIF_F_LLTX;
7a291083
JBT		 3242 dev->watchdog_timeo = EHEA_WATCH_DOG_TIMEOUT;
3243
c4028958 3244 INIT_WORK(&port->reset_task, ehea_reset_port);
7a291083
JBT		 3245
3246 ret = register_netdev(dev);
3247 if (ret) {
3248 ehea_error("register_netdev failed. ret=%d", ret);
21eee2dd 3249 goto out_unreg_port;
7a291083
JBT		 3250 }
3251
d4dc4ec9
JBT		 3252 port->lro_max_aggr = lro_max_aggr;
3253
1acf2318 3254 ret = ehea_get_jumboframe_status(port, &jumbo);
e542aa6b 3255 if (ret)
1acf2318
JBT		 3256 ehea_error("failed determining jumbo frame status for %s",
3257 port->netdev->name);
3258
9c750b7d
TK		 3259 ehea_info("%s: Jumbo frames are %sabled", dev->name,
3260 jumbo == 1 ? "en" : "dis");
3261
44c82152
TK		 3262 adapter->active_ports++;
3263
1acf2318 3264 return port;
7a291083 3265
1acf2318
JBT		 3266out_unreg_port:
3267 ehea_unregister_port(port);
3268
3269out_free_mc_list:
7a291083 3270 kfree(port->mc_list);
1acf2318
JBT		 3271
3272out_free_ethdev:
3273 free_netdev(dev);
3274
3275out_err:
3276 ehea_error("setting up logical port with id=%d failed, ret=%d",
3277 logical_port_id, ret);
3278 return NULL;
3279}
3280
3281static void ehea_shutdown_single_port(struct ehea_port *port)
3282{
7fb1c2ac 3283 struct ehea_adapter *adapter = port->adapter;
1acf2318
JBT		 3284 unregister_netdev(port->netdev);
3285 ehea_unregister_port(port);
3286 kfree(port->mc_list);
3287 free_netdev(port->netdev);
7fb1c2ac 3288 adapter->active_ports--;
7a291083
JBT		 3289}
3290
3291static int ehea_setup_ports(struct ehea_adapter *adapter)
3292{
1acf2318
JBT		 3293 struct device_node *lhea_dn;
3294 struct device_node *eth_dn = NULL;
d1d25aab 3295
9f9a3b8a 3296 const u32 *dn_log_port_id;
1acf2318
JBT		 3297 int i = 0;
3298
61c7a080 3299 lhea_dn = adapter->ofdev->dev.of_node;
1eef4e04 3300 while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) {
e542aa6b 3301
40cd3a45 3302 dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no",
d1d25aab 3303 NULL);
1acf2318
JBT		 3304 if (!dn_log_port_id) {
3305 ehea_error("bad device node: eth_dn name=%s",
3306 eth_dn->full_name);
3307 continue;
3308 }
7a291083 3309
1211bb6d
TK		 3310 if (ehea_add_adapter_mr(adapter)) {
3311 ehea_error("creating MR failed");
3312 of_node_put(eth_dn);
3313 return -EIO;
3314 }
3315
1acf2318
JBT		 3316 adapter->port[i] = ehea_setup_single_port(adapter,
3317 *dn_log_port_id,
3318 eth_dn);
7a291083 3319 if (adapter->port[i])
1acf2318 3320 ehea_info("%s -> logical port id #%d",
e542aa6b 3321 adapter->port[i]->netdev->name,
1acf2318 3322 *dn_log_port_id);
1211bb6d
TK		 3323 else
3324 ehea_remove_adapter_mr(adapter);
3325
1acf2318 3326 i++;
ee289b64 3327 }
1211bb6d 3328 return 0;
1acf2318
JBT		 3329}
3330
e542aa6b
JBT		 3331static struct device_node *ehea_get_eth_dn(struct ehea_adapter *adapter,
3332 u32 logical_port_id)
1acf2318
JBT		 3333{
3334 struct device_node *lhea_dn;
3335 struct device_node *eth_dn = NULL;
9f9a3b8a 3336 const u32 *dn_log_port_id;
1acf2318 3337
61c7a080 3338 lhea_dn = adapter->ofdev->dev.of_node;
1eef4e04 3339 while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) {
e542aa6b 3340
40cd3a45 3341 dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no",
d1d25aab 3342 NULL);
1acf2318
JBT		 3343 if (dn_log_port_id)
3344 if (*dn_log_port_id == logical_port_id)
3345 return eth_dn;
ee289b64 3346 }
1acf2318
JBT		 3347
3348 return NULL;
3349}
3350
3351static ssize_t ehea_probe_port(struct device *dev,
3352 struct device_attribute *attr,
3353 const char *buf, size_t count)
3354{
c7ae011d 3355 struct ehea_adapter *adapter = dev_get_drvdata(dev);
1acf2318
JBT		 3356 struct ehea_port *port;
3357 struct device_node *eth_dn = NULL;
3358 int i;
3359
3360 u32 logical_port_id;
3361
a8e34fda 3362 sscanf(buf, "%d", &logical_port_id);
1acf2318
JBT		 3363
3364 port = ehea_get_port(adapter, logical_port_id);
3365
3366 if (port) {
3367 ehea_info("adding port with logical port id=%d failed. port "
3368 "already configured as %s.", logical_port_id,
3369 port->netdev->name);
3370 return -EINVAL;
7a291083 3371 }
e542aa6b 3372
1acf2318 3373 eth_dn = ehea_get_eth_dn(adapter, logical_port_id);
7a291083 3374
1acf2318
JBT		 3375 if (!eth_dn) {
3376 ehea_info("no logical port with id %d found", logical_port_id);
3377 return -EINVAL;
3378 }
e542aa6b 3379
1211bb6d
TK		 3380 if (ehea_add_adapter_mr(adapter)) {
3381 ehea_error("creating MR failed");
3382 return -EIO;
3383 }
3384
1acf2318 3385 port = ehea_setup_single_port(adapter, logical_port_id, eth_dn);
7a291083 3386
1eef4e04
JBT		 3387 of_node_put(eth_dn);
3388
1acf2318 3389 if (port) {
508d2b5d 3390 for (i = 0; i < EHEA_MAX_PORTS; i++)
1acf2318
JBT		 3391 if (!adapter->port[i]) {
3392 adapter->port[i] = port;
3393 break;
3394 }
7a291083 3395
1acf2318
JBT		 3396 ehea_info("added %s (logical port id=%d)", port->netdev->name,
3397 logical_port_id);
1211bb6d
TK		 3398 } else {
3399 ehea_remove_adapter_mr(adapter);
e542aa6b 3400 return -EIO;
1211bb6d 3401 }
7a291083 3402
1acf2318
JBT		 3403 return (ssize_t) count;
3404}
3405
3406static ssize_t ehea_remove_port(struct device *dev,
3407 struct device_attribute *attr,
3408 const char *buf, size_t count)
3409{
c7ae011d 3410 struct ehea_adapter *adapter = dev_get_drvdata(dev);
1acf2318
JBT		 3411 struct ehea_port *port;
3412 int i;
3413 u32 logical_port_id;
3414
a8e34fda 3415 sscanf(buf, "%d", &logical_port_id);
1acf2318
JBT		 3416
3417 port = ehea_get_port(adapter, logical_port_id);
3418
3419 if (port) {
3420 ehea_info("removed %s (logical port id=%d)", port->netdev->name,
3421 logical_port_id);
3422
3423 ehea_shutdown_single_port(port);
3424
508d2b5d 3425 for (i = 0; i < EHEA_MAX_PORTS; i++)
1acf2318
JBT		 3426 if (adapter->port[i] == port) {
3427 adapter->port[i] = NULL;
3428 break;
3429 }
3430 } else {
3431 ehea_error("removing port with logical port id=%d failed. port "
3432 "not configured.", logical_port_id);
3433 return -EINVAL;
3434 }
3435
1211bb6d
TK		 3436 ehea_remove_adapter_mr(adapter);
3437
1acf2318
JBT		 3438 return (ssize_t) count;
3439}
3440
3441static DEVICE_ATTR(probe_port, S_IWUSR, NULL, ehea_probe_port);
3442static DEVICE_ATTR(remove_port, S_IWUSR, NULL, ehea_remove_port);
3443
2dc11581 3444int ehea_create_device_sysfs(struct platform_device *dev)
1acf2318 3445{
6b08f3ae 3446 int ret = device_create_file(&dev->dev, &dev_attr_probe_port);
1acf2318
JBT		 3447 if (ret)
3448 goto out;
3449
6b08f3ae 3450 ret = device_create_file(&dev->dev, &dev_attr_remove_port);
1acf2318 3451out:
7a291083
JBT		 3452 return ret;
3453}
3454
2dc11581 3455void ehea_remove_device_sysfs(struct platform_device *dev)
1acf2318 3456{
6b08f3ae
JF		 3457 device_remove_file(&dev->dev, &dev_attr_probe_port);
3458 device_remove_file(&dev->dev, &dev_attr_remove_port);
1acf2318
JBT		 3459}
3460
2dc11581 3461static int __devinit ehea_probe_adapter(struct platform_device *dev,
1acf2318 3462 const struct of_device_id *id)
7a291083
JBT		 3463{
3464 struct ehea_adapter *adapter;
9f9a3b8a 3465 const u64 *adapter_handle;
7a291083
JBT		 3466 int ret;
3467
61c7a080 3468 if (!dev || !dev->dev.of_node) {
1eef4e04
JBT		 3469 ehea_error("Invalid ibmebus device probed");
3470 return -EINVAL;
3471 }
3472
7a291083
JBT		 3473 adapter = kzalloc(sizeof(*adapter), GFP_KERNEL);
3474 if (!adapter) {
3475 ret = -ENOMEM;
6b08f3ae 3476 dev_err(&dev->dev, "no mem for ehea_adapter\n");
7a291083
JBT		 3477 goto out;
3478 }
3479
44c82152
TK		 3480 list_add(&adapter->list, &adapter_list);
3481
6b08f3ae 3482 adapter->ofdev = dev;
1acf2318 3483
61c7a080 3484 adapter_handle = of_get_property(dev->dev.of_node, "ibm,hea-handle",
d1d25aab 3485 NULL);
061bf3cd
TK		 3486 if (adapter_handle)
3487 adapter->handle = *adapter_handle;
3488
3489 if (!adapter->handle) {
6b08f3ae 3490 dev_err(&dev->dev, "failed getting handle for adapter"
61c7a080 3491 " '%s'\n", dev->dev.of_node->full_name);
7a291083
JBT		 3492 ret = -ENODEV;
3493 goto out_free_ad;
3494 }
3495
7a291083
JBT		 3496 adapter->pd = EHEA_PD_ID;
3497
c7ae011d 3498 dev_set_drvdata(&dev->dev, adapter);
7a291083 3499
7a291083
JBT		 3500
3501 /* initialize adapter and ports */
3502 /* get adapter properties */
3503 ret = ehea_sense_adapter_attr(adapter);
3504 if (ret) {
898eb71c 3505 dev_err(&dev->dev, "sense_adapter_attr failed: %d\n", ret);
1211bb6d 3506 goto out_free_ad;
7a291083 3507 }
7a291083
JBT		 3508
3509 adapter->neq = ehea_create_eq(adapter,
3510 EHEA_NEQ, EHEA_MAX_ENTRIES_EQ, 1);
3511 if (!adapter->neq) {
1eef4e04 3512 ret = -EIO;
898eb71c 3513 dev_err(&dev->dev, "NEQ creation failed\n");
1211bb6d 3514 goto out_free_ad;
7a291083
JBT		 3515 }
3516
3517 tasklet_init(&adapter->neq_tasklet, ehea_neq_tasklet,
3518 (unsigned long)adapter);
3519
6b08f3ae 3520 ret = ibmebus_request_irq(adapter->neq->attr.ist1,
38515e90 3521 ehea_interrupt_neq, IRQF_DISABLED,
7a291083
JBT		 3522 "ehea_neq", adapter);
3523 if (ret) {
898eb71c 3524 dev_err(&dev->dev, "requesting NEQ IRQ failed\n");
7a291083
JBT		 3525 goto out_kill_eq;
3526 }
3527
1eef4e04
JBT		 3528 ret = ehea_create_device_sysfs(dev);
3529 if (ret)
3bf76b81 3530 goto out_free_irq;
1acf2318 3531
7a291083
JBT		 3532 ret = ehea_setup_ports(adapter);
3533 if (ret) {
898eb71c 3534 dev_err(&dev->dev, "setup_ports failed\n");
1acf2318 3535 goto out_rem_dev_sysfs;
7a291083
JBT		 3536 }
3537
3538 ret = 0;
3539 goto out;
3540
1acf2318
JBT		 3541out_rem_dev_sysfs:
3542 ehea_remove_device_sysfs(dev);
3543
7a291083 3544out_free_irq:
6b08f3ae 3545 ibmebus_free_irq(adapter->neq->attr.ist1, adapter);
7a291083
JBT		 3546
3547out_kill_eq:
3548 ehea_destroy_eq(adapter->neq);
3549
7a291083 3550out_free_ad:
51621fbd 3551 list_del(&adapter->list);
7a291083 3552 kfree(adapter);
21eee2dd 3553
7a291083 3554out:
21eee2dd 3555 ehea_update_firmware_handles();
52e21b1b 3556
7a291083
JBT		 3557 return ret;
3558}
3559
2dc11581 3560static int __devexit ehea_remove(struct platform_device *dev)
7a291083 3561{
c7ae011d 3562 struct ehea_adapter *adapter = dev_get_drvdata(&dev->dev);
7a291083
JBT		 3563 int i;
3564
1acf2318 3565 for (i = 0; i < EHEA_MAX_PORTS; i++)
7a291083
JBT		 3566 if (adapter->port[i]) {
3567 ehea_shutdown_single_port(adapter->port[i]);
3568 adapter->port[i] = NULL;
3569 }
1acf2318
JBT		 3570
3571 ehea_remove_device_sysfs(dev);
3572
3bf76b81 3573 flush_scheduled_work();
7a291083 3574
6b08f3ae 3575 ibmebus_free_irq(adapter->neq->attr.ist1, adapter);
d4150a27 3576 tasklet_kill(&adapter->neq_tasklet);
7a291083
JBT		 3577
3578 ehea_destroy_eq(adapter->neq);
1211bb6d 3579 ehea_remove_adapter_mr(adapter);
44c82152 3580 list_del(&adapter->list);
7a291083 3581 kfree(adapter);
44c82152 3582
21eee2dd 3583 ehea_update_firmware_handles();
21eee2dd 3584
7a291083
JBT		 3585 return 0;
3586}
3587
21eee2dd
TK		 3588void ehea_crash_handler(void)
3589{
3590 int i;
3591
3592 if (ehea_fw_handles.arr)
3593 for (i = 0; i < ehea_fw_handles.num_entries; i++)
3594 ehea_h_free_resource(ehea_fw_handles.arr[i].adh,
3595 ehea_fw_handles.arr[i].fwh,
3596 FORCE_FREE);
3597
3598 if (ehea_bcmc_regs.arr)
3599 for (i = 0; i < ehea_bcmc_regs.num_entries; i++)
3600 ehea_h_reg_dereg_bcmc(ehea_bcmc_regs.arr[i].adh,
3601 ehea_bcmc_regs.arr[i].port_id,
3602 ehea_bcmc_regs.arr[i].reg_type,
3603 ehea_bcmc_regs.arr[i].macaddr,
3604 0, H_DEREG_BCMC);
3605}
3606
48cfb14f
HH		 3607static int ehea_mem_notifier(struct notifier_block *nb,
3608 unsigned long action, void *data)
3609{
a7c561f2 3610 int ret = NOTIFY_BAD;
d4f12daf 3611 struct memory_notify *arg = data;
a7c561f2 3612
099473c1 3613 mutex_lock(&dlpar_mem_lock);
a7c561f2 3614
48cfb14f 3615 switch (action) {
d4f12daf
HH		 3616 case MEM_CANCEL_OFFLINE:
3617 ehea_info("memory offlining canceled");
3618 /* Readd canceled memory block */
3619 case MEM_ONLINE:
3620 ehea_info("memory is going online");
3876732c 3621 set_bit(__EHEA_STOP_XFER, &ehea_driver_flags);
d4f12daf 3622 if (ehea_add_sect_bmap(arg->start_pfn, arg->nr_pages))
a7c561f2 3623 goto out_unlock;
d4f12daf
HH		 3624 ehea_rereg_mrs(NULL);
3625 break;
3626 case MEM_GOING_OFFLINE:
3627 ehea_info("memory is going offline");
3876732c 3628 set_bit(__EHEA_STOP_XFER, &ehea_driver_flags);
d4f12daf 3629 if (ehea_rem_sect_bmap(arg->start_pfn, arg->nr_pages))
a7c561f2 3630 goto out_unlock;
48cfb14f
HH		 3631 ehea_rereg_mrs(NULL);
3632 break;
3633 default:
3634 break;
3635 }
52e21b1b
JBT		 3636
3637 ehea_update_firmware_handles();
a7c561f2 3638 ret = NOTIFY_OK;
52e21b1b 3639
a7c561f2
TK		 3640out_unlock:
3641 mutex_unlock(&dlpar_mem_lock);
a7c561f2 3642 return ret;
48cfb14f
HH		 3643}
3644
3645static struct notifier_block ehea_mem_nb = {
3646 .notifier_call = ehea_mem_notifier,
3647};
3648
2a6f4e49
JBT		 3649static int ehea_reboot_notifier(struct notifier_block *nb,
3650 unsigned long action, void *unused)
3651{
3652 if (action == SYS_RESTART) {
3653 ehea_info("Reboot: freeing all eHEA resources");
3654 ibmebus_unregister_driver(&ehea_driver);
3655 }
3656 return NOTIFY_DONE;
3657}
3658
3659static struct notifier_block ehea_reboot_nb = {
508d2b5d 3660 .notifier_call = ehea_reboot_notifier,
2a6f4e49
JBT		 3661};
3662
7a291083
JBT		 3663static int check_module_parm(void)
3664{
3665 int ret = 0;
3666
3667 if ((rq1_entries < EHEA_MIN_ENTRIES_QP) ||
3668 (rq1_entries > EHEA_MAX_ENTRIES_RQ1)) {
3669 ehea_info("Bad parameter: rq1_entries");
3670 ret = -EINVAL;
3671 }
3672 if ((rq2_entries < EHEA_MIN_ENTRIES_QP) ||
3673 (rq2_entries > EHEA_MAX_ENTRIES_RQ2)) {
3674 ehea_info("Bad parameter: rq2_entries");
3675 ret = -EINVAL;
3676 }
3677 if ((rq3_entries < EHEA_MIN_ENTRIES_QP) ||
3678 (rq3_entries > EHEA_MAX_ENTRIES_RQ3)) {
3679 ehea_info("Bad parameter: rq3_entries");
3680 ret = -EINVAL;
3681 }
3682 if ((sq_entries < EHEA_MIN_ENTRIES_QP) ||
3683 (sq_entries > EHEA_MAX_ENTRIES_SQ)) {
3684 ehea_info("Bad parameter: sq_entries");
3685 ret = -EINVAL;
3686 }
3687
3688 return ret;
3689}
3690
4c3ca4da
JBT		 3691static ssize_t ehea_show_capabilities(struct device_driver *drv,
3692 char *buf)
3693{
3694 return sprintf(buf, "%d", EHEA_CAPABILITIES);
3695}
3696
3697static DRIVER_ATTR(capabilities, S_IRUSR | S_IRGRP | S_IROTH,
3698 ehea_show_capabilities, NULL);
3699
7a291083
JBT		 3700int __init ehea_module_init(void)
3701{
3702 int ret;
3703
3704 printk(KERN_INFO "IBM eHEA ethernet device driver (Release %s)\n",
3705 DRV_VERSION);
3706
44c82152
TK		 3707
3708 INIT_WORK(&ehea_rereg_mr_task, ehea_rereg_mrs);
21eee2dd
TK		 3709 memset(&ehea_fw_handles, 0, sizeof(ehea_fw_handles));
3710 memset(&ehea_bcmc_regs, 0, sizeof(ehea_bcmc_regs));
3711
9f71a568 3712 mutex_init(&ehea_fw_handles.lock);
5c2cec14 3713 spin_lock_init(&ehea_bcmc_regs.lock);
44c82152 3714
7a291083
JBT		 3715 ret = check_module_parm();
3716 if (ret)
3717 goto out;
44c82152
TK		 3718
3719 ret = ehea_create_busmap();
3720 if (ret)
3721 goto out;
3722
21eee2dd
TK		 3723 ret = register_reboot_notifier(&ehea_reboot_nb);
3724 if (ret)
3725 ehea_info("failed registering reboot notifier");
3726
48cfb14f
HH		 3727 ret = register_memory_notifier(&ehea_mem_nb);
3728 if (ret)
3729 ehea_info("failed registering memory remove notifier");
3730
c061b18d 3731 ret = crash_shutdown_register(ehea_crash_handler);
21eee2dd
TK		 3732 if (ret)
3733 ehea_info("failed registering crash handler");
2a6f4e49 3734
7a291083 3735 ret = ibmebus_register_driver(&ehea_driver);
4c3ca4da 3736 if (ret) {
7a291083 3737 ehea_error("failed registering eHEA device driver on ebus");
21eee2dd 3738 goto out2;
4c3ca4da
JBT		 3739 }
3740
3741 ret = driver_create_file(&ehea_driver.driver,
3742 &driver_attr_capabilities);
3743 if (ret) {
3744 ehea_error("failed to register capabilities attribute, ret=%d",
3745 ret);
21eee2dd 3746 goto out3;
4c3ca4da 3747 }
7a291083 3748
21eee2dd
TK		 3749 return ret;
3750
3751out3:
3752 ibmebus_unregister_driver(&ehea_driver);
3753out2:
48cfb14f 3754 unregister_memory_notifier(&ehea_mem_nb);
21eee2dd 3755 unregister_reboot_notifier(&ehea_reboot_nb);
c061b18d 3756 crash_shutdown_unregister(ehea_crash_handler);
7a291083
JBT		 3757out:
3758 return ret;
3759}
3760
3761static void __exit ehea_module_exit(void)
3762{
21eee2dd
TK		 3763 int ret;
3764
3bf76b81 3765 flush_scheduled_work();
4c3ca4da 3766 driver_remove_file(&ehea_driver.driver, &driver_attr_capabilities);
7a291083 3767 ibmebus_unregister_driver(&ehea_driver);
2a6f4e49 3768 unregister_reboot_notifier(&ehea_reboot_nb);
c061b18d 3769 ret = crash_shutdown_unregister(ehea_crash_handler);
21eee2dd
TK		 3770 if (ret)
3771 ehea_info("failed unregistering crash handler");
48cfb14f 3772 unregister_memory_notifier(&ehea_mem_nb);
21eee2dd
TK		 3773 kfree(ehea_fw_handles.arr);
3774 kfree(ehea_bcmc_regs.arr);
44c82152 3775 ehea_destroy_busmap();
7a291083
JBT		 3776}
3777
3778module_init(ehea_module_init);
3779module_exit(ehea_module_exit);
Linux 6.x block layer and io_uring tree(s)