]> bbs.cooldavid.org Git - net-next-2.6.git/blame - drivers/net/ehea/ehea_main.c
git://bbs.cooldavid.org / net-next-2.6.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
[net-next-2.6.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 }
789}
790
791static void check_sqs(struct ehea_port *port)
792{
793 struct ehea_swqe *swqe;
794 int swqe_index;
795 int i, k;
796
797 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
798 struct ehea_port_res *pr = &port->port_res[i];
799 k = 0;
800 swqe = ehea_get_swqe(pr->qp, &swqe_index);
801 memset(swqe, 0, SWQE_HEADER_SIZE);
802 atomic_dec(&pr->swqe_avail);
803
804 swqe->tx_control |= EHEA_SWQE_PURGE;
805 swqe->wr_id = SWQE_RESTART_CHECK;
806 swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
807 swqe->tx_control |= EHEA_SWQE_IMM_DATA_PRESENT;
808 swqe->immediate_data_length = 80;
809
810 ehea_post_swqe(pr->qp, swqe);
811
812 while (pr->sq_restart_flag == 0) {
813 msleep(5);
814 if (++k == 100) {
815 ehea_error("HW/SW queues out of sync");
816 ehea_schedule_port_reset(pr->port);
817 return;
818 }
819 }
820 }
2928db4c
AD		 821}
822
823
18604c54 824static struct ehea_cqe *ehea_proc_cqes(struct ehea_port_res *pr, int my_quota)
7a291083 825{
acbddb59 826 struct sk_buff *skb;
7a291083
JBT		 827 struct ehea_cq *send_cq = pr->send_cq;
828 struct ehea_cqe *cqe;
18604c54 829 int quota = my_quota;
7a291083
JBT		 830 int cqe_counter = 0;
831 int swqe_av = 0;
acbddb59 832 int index;
7a291083
JBT		 833 unsigned long flags;
834
18604c54 835 cqe = ehea_poll_cq(send_cq);
508d2b5d 836 while (cqe && (quota > 0)) {
18604c54
JBT		 837 ehea_inc_cq(send_cq);
838
7a291083
JBT		 839 cqe_counter++;
840 rmb();
2928db4c
AD		 841
842 if (cqe->wr_id == SWQE_RESTART_CHECK) {
843 pr->sq_restart_flag = 1;
844 swqe_av++;
845 break;
846 }
847
7a291083 848 if (cqe->status & EHEA_CQE_STAT_ERR_MASK) {
ea96ceac
TK		 849 ehea_error("Bad send completion status=0x%04X",
850 cqe->status);
851
7a291083
JBT		 852 if (netif_msg_tx_err(pr->port))
853 ehea_dump(cqe, sizeof(*cqe), "Send CQE");
ea96ceac
TK		 854
855 if (cqe->status & EHEA_CQE_STAT_RESET_MASK) {
856 ehea_error("Resetting port");
857 ehea_schedule_port_reset(pr->port);
858 break;
859 }
7a291083
JBT		 860 }
861
862 if (netif_msg_tx_done(pr->port))
863 ehea_dump(cqe, sizeof(*cqe), "CQE");
864
865 if (likely(EHEA_BMASK_GET(EHEA_WR_ID_TYPE, cqe->wr_id)
acbddb59
JBT		 866 == EHEA_SWQE2_TYPE)) {
867
868 index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, cqe->wr_id);
869 skb = pr->sq_skba.arr[index];
870 dev_kfree_skb(skb);
871 pr->sq_skba.arr[index] = NULL;
872 }
7a291083
JBT		 873
874 swqe_av += EHEA_BMASK_GET(EHEA_WR_ID_REFILL, cqe->wr_id);
875 quota--;
18604c54
JBT		 876
877 cqe = ehea_poll_cq(send_cq);
ee289b64 878 }
7a291083
JBT		 879
880 ehea_update_feca(send_cq, cqe_counter);
881 atomic_add(swqe_av, &pr->swqe_avail);
882
883 spin_lock_irqsave(&pr->netif_queue, flags);
18604c54 884
7a291083
JBT		 885 if (pr->queue_stopped && (atomic_read(&pr->swqe_avail)
886 >= pr->swqe_refill_th)) {
887 netif_wake_queue(pr->port->netdev);
888 pr->queue_stopped = 0;
889 }
890 spin_unlock_irqrestore(&pr->netif_queue, flags);
891
18604c54 892 return cqe;
7a291083
JBT		 893}
894
18604c54 895#define EHEA_NAPI_POLL_NUM_BEFORE_IRQ 16
bea3348e 896#define EHEA_POLL_MAX_CQES 65535
18604c54 897
bea3348e 898static int ehea_poll(struct napi_struct *napi, int budget)
7a291083 899{
508d2b5d
DM		 900 struct ehea_port_res *pr = container_of(napi, struct ehea_port_res,
901 napi);
bea3348e 902 struct net_device *dev = pr->port->netdev;
18604c54
JBT		 903 struct ehea_cqe *cqe;
904 struct ehea_cqe *cqe_skb = NULL;
905 int force_irq, wqe_index;
bea3348e 906 int rx = 0;
18604c54
JBT		 907
908 force_irq = (pr->poll_counter > EHEA_NAPI_POLL_NUM_BEFORE_IRQ);
bea3348e
SH		 909 cqe_skb = ehea_proc_cqes(pr, EHEA_POLL_MAX_CQES);
910
911 if (!force_irq)
912 rx += ehea_proc_rwqes(dev, pr, budget - rx);
18604c54 913
bea3348e 914 while ((rx != budget) || force_irq) {
18604c54 915 pr->poll_counter = 0;
bea3348e 916 force_irq = 0;
288379f0 917 napi_complete(napi);
18604c54
JBT		 918 ehea_reset_cq_ep(pr->recv_cq);
919 ehea_reset_cq_ep(pr->send_cq);
920 ehea_reset_cq_n1(pr->recv_cq);
921 ehea_reset_cq_n1(pr->send_cq);
a91fb143 922 rmb();
18604c54
JBT		 923 cqe = ehea_poll_rq1(pr->qp, &wqe_index);
924 cqe_skb = ehea_poll_cq(pr->send_cq);
925
e542aa6b 926 if (!cqe && !cqe_skb)
bea3348e 927 return rx;
18604c54 928
288379f0 929 if (!napi_reschedule(napi))
bea3348e 930 return rx;
18604c54 931
bea3348e
SH		 932 cqe_skb = ehea_proc_cqes(pr, EHEA_POLL_MAX_CQES);
933 rx += ehea_proc_rwqes(dev, pr, budget - rx);
934 }
e542aa6b 935
bea3348e
SH		 936 pr->poll_counter++;
937 return rx;
7a291083
JBT		 938}
939
8d22c971
JBT		 940#ifdef CONFIG_NET_POLL_CONTROLLER
941static void ehea_netpoll(struct net_device *dev)
942{
943 struct ehea_port *port = netdev_priv(dev);
bea3348e 944 int i;
8d22c971 945
bea3348e 946 for (i = 0; i < port->num_def_qps; i++)
288379f0 947 napi_schedule(&port->port_res[i].napi);
8d22c971
JBT		 948}
949#endif
950
7d12e780 951static irqreturn_t ehea_recv_irq_handler(int irq, void *param)
7a291083
JBT		 952{
953 struct ehea_port_res *pr = param;
18604c54 954
288379f0 955 napi_schedule(&pr->napi);
18604c54 956
7a291083
JBT		 957 return IRQ_HANDLED;
958}
959
7d12e780 960static irqreturn_t ehea_qp_aff_irq_handler(int irq, void *param)
7a291083
JBT		 961{
962 struct ehea_port *port = param;
963 struct ehea_eqe *eqe;
d2db9eea 964 struct ehea_qp *qp;
7a291083 965 u32 qp_token;
ea96ceac
TK		 966 u64 resource_type, aer, aerr;
967 int reset_port = 0;
7a291083
JBT		 968
969 eqe = ehea_poll_eq(port->qp_eq);
bb3a6449 970
7a291083 971 while (eqe) {
7a291083 972 qp_token = EHEA_BMASK_GET(EHEA_EQE_QP_TOKEN, eqe->entry);
a1c5a893 973 ehea_error("QP aff_err: entry=0x%llx, token=0x%x",
bb3a6449 974 eqe->entry, qp_token);
d2db9eea
JBT		 975
976 qp = port->port_res[qp_token].qp;
ea96ceac
TK		 977
978 resource_type = ehea_error_data(port->adapter, qp->fw_handle,
979 &aer, &aerr);
980
981 if (resource_type == EHEA_AER_RESTYPE_QP) {
982 if ((aer & EHEA_AER_RESET_MASK) ||
983 (aerr & EHEA_AERR_RESET_MASK))
984 reset_port = 1;
985 } else
986 reset_port = 1; /* Reset in case of CQ or EQ error */
987
bb3a6449 988 eqe = ehea_poll_eq(port->qp_eq);
7a291083
JBT		 989 }
990
ea96ceac
TK		 991 if (reset_port) {
992 ehea_error("Resetting port");
993 ehea_schedule_port_reset(port);
994 }
d2db9eea 995
7a291083
JBT		 996 return IRQ_HANDLED;
997}
998
999static struct ehea_port *ehea_get_port(struct ehea_adapter *adapter,
1000 int logical_port)
1001{
1002 int i;
1003
1acf2318 1004 for (i = 0; i < EHEA_MAX_PORTS; i++)
41b69c70 1005 if (adapter->port[i])
d1d25aab 1006 if (adapter->port[i]->logical_port_id == logical_port)
41b69c70 1007 return adapter->port[i];
7a291083
JBT		 1008 return NULL;
1009}
1010
1011int ehea_sense_port_attr(struct ehea_port *port)
1012{
1013 int ret;
1014 u64 hret;
1015 struct hcp_ehea_port_cb0 *cb0;
1016
508d2b5d 1017 /* may be called via ehea_neq_tasklet() */
3faf2693 1018 cb0 = (void *)get_zeroed_page(GFP_ATOMIC);
508d2b5d 1019 if (!cb0) {
7a291083
JBT		 1020 ehea_error("no mem for cb0");
1021 ret = -ENOMEM;
1022 goto out;
1023 }
1024
1025 hret = ehea_h_query_ehea_port(port->adapter->handle,
1026 port->logical_port_id, H_PORT_CB0,
1027 EHEA_BMASK_SET(H_PORT_CB0_ALL, 0xFFFF),
1028 cb0);
1029 if (hret != H_SUCCESS) {
1030 ret = -EIO;
1031 goto out_free;
1032 }
1033
1034 /* MAC address */
1035 port->mac_addr = cb0->port_mac_addr << 16;
1036
508d2b5d 1037 if (!is_valid_ether_addr((u8 *)&port->mac_addr)) {
7a291083
JBT		 1038 ret = -EADDRNOTAVAIL;
1039 goto out_free;
1040 }
1041
1042 /* Port speed */
1043 switch (cb0->port_speed) {
1044 case H_SPEED_10M_H:
1045 port->port_speed = EHEA_SPEED_10M;
1046 port->full_duplex = 0;
1047 break;
1048 case H_SPEED_10M_F:
1049 port->port_speed = EHEA_SPEED_10M;
1050 port->full_duplex = 1;
1051 break;
1052 case H_SPEED_100M_H:
1053 port->port_speed = EHEA_SPEED_100M;
1054 port->full_duplex = 0;
1055 break;
1056 case H_SPEED_100M_F:
1057 port->port_speed = EHEA_SPEED_100M;
1058 port->full_duplex = 1;
1059 break;
1060 case H_SPEED_1G_F:
1061 port->port_speed = EHEA_SPEED_1G;
1062 port->full_duplex = 1;
1063 break;
1064 case H_SPEED_10G_F:
1065 port->port_speed = EHEA_SPEED_10G;
1066 port->full_duplex = 1;
1067 break;
1068 default:
1069 port->port_speed = 0;
1070 port->full_duplex = 0;
1071 break;
1072 }
1073
e919b593 1074 port->autoneg = 1;
18604c54 1075 port->num_mcs = cb0->num_default_qps;
e919b593 1076
7a291083 1077 /* Number of default QPs */
18604c54
JBT		 1078 if (use_mcs)
1079 port->num_def_qps = cb0->num_default_qps;
1080 else
1081 port->num_def_qps = 1;
7a291083
JBT		 1082
1083 if (!port->num_def_qps) {
1084 ret = -EINVAL;
1085 goto out_free;
1086 }
1087
18604c54
JBT		 1088 port->num_tx_qps = num_tx_qps;
1089
1090 if (port->num_def_qps >= port->num_tx_qps)
7a291083
JBT		 1091 port->num_add_tx_qps = 0;
1092 else
18604c54 1093 port->num_add_tx_qps = port->num_tx_qps - port->num_def_qps;
7a291083
JBT		 1094
1095 ret = 0;
1096out_free:
1097 if (ret || netif_msg_probe(port))
1098 ehea_dump(cb0, sizeof(*cb0), "ehea_sense_port_attr");
3faf2693 1099 free_page((unsigned long)cb0);
7a291083
JBT		 1100out:
1101 return ret;
1102}
1103
1104int ehea_set_portspeed(struct ehea_port *port, u32 port_speed)
1105{
1106 struct hcp_ehea_port_cb4 *cb4;
1107 u64 hret;
1108 int ret = 0;
1109
3faf2693 1110 cb4 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083
JBT		 1111 if (!cb4) {
1112 ehea_error("no mem for cb4");
1113 ret = -ENOMEM;
1114 goto out;
1115 }
1116
1117 cb4->port_speed = port_speed;
1118
1119 netif_carrier_off(port->netdev);
1120
1121 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1122 port->logical_port_id,
1123 H_PORT_CB4, H_PORT_CB4_SPEED, cb4);
1124 if (hret == H_SUCCESS) {
1125 port->autoneg = port_speed == EHEA_SPEED_AUTONEG ? 1 : 0;
1126
1127 hret = ehea_h_query_ehea_port(port->adapter->handle,
1128 port->logical_port_id,
1129 H_PORT_CB4, H_PORT_CB4_SPEED,
1130 cb4);
1131 if (hret == H_SUCCESS) {
1132 switch (cb4->port_speed) {
1133 case H_SPEED_10M_H:
1134 port->port_speed = EHEA_SPEED_10M;
1135 port->full_duplex = 0;
1136 break;
1137 case H_SPEED_10M_F:
1138 port->port_speed = EHEA_SPEED_10M;
1139 port->full_duplex = 1;
1140 break;
1141 case H_SPEED_100M_H:
1142 port->port_speed = EHEA_SPEED_100M;
1143 port->full_duplex = 0;
1144 break;
1145 case H_SPEED_100M_F:
1146 port->port_speed = EHEA_SPEED_100M;
1147 port->full_duplex = 1;
1148 break;
1149 case H_SPEED_1G_F:
1150 port->port_speed = EHEA_SPEED_1G;
1151 port->full_duplex = 1;
1152 break;
1153 case H_SPEED_10G_F:
1154 port->port_speed = EHEA_SPEED_10G;
1155 port->full_duplex = 1;
1156 break;
1157 default:
1158 port->port_speed = 0;
1159 port->full_duplex = 0;
1160 break;
1161 }
1162 } else {
1163 ehea_error("Failed sensing port speed");
1164 ret = -EIO;
1165 }
1166 } else {
1167 if (hret == H_AUTHORITY) {
7674a588 1168 ehea_info("Hypervisor denied setting port speed");
7a291083
JBT		 1169 ret = -EPERM;
1170 } else {
1171 ret = -EIO;
1172 ehea_error("Failed setting port speed");
1173 }
1174 }
8759cf76
JBT		 1175 if (!prop_carrier_state || (port->phy_link == EHEA_PHY_LINK_UP))
1176 netif_carrier_on(port->netdev);
1177
3faf2693 1178 free_page((unsigned long)cb4);
7a291083
JBT		 1179out:
1180 return ret;
1181}
1182
1183static void ehea_parse_eqe(struct ehea_adapter *adapter, u64 eqe)
1184{
1185 int ret;
1186 u8 ec;
1187 u8 portnum;
1188 struct ehea_port *port;
1189
1190 ec = EHEA_BMASK_GET(NEQE_EVENT_CODE, eqe);
1191 portnum = EHEA_BMASK_GET(NEQE_PORTNUM, eqe);
1192 port = ehea_get_port(adapter, portnum);
1193
1194 switch (ec) {
1195 case EHEA_EC_PORTSTATE_CHG: /* port state change */
1196
1197 if (!port) {
1198 ehea_error("unknown portnum %x", portnum);
1199 break;
1200 }
1201
1202 if (EHEA_BMASK_GET(NEQE_PORT_UP, eqe)) {
1203 if (!netif_carrier_ok(port->netdev)) {
1e1675cc 1204 ret = ehea_sense_port_attr(port);
7a291083
JBT		 1205 if (ret) {
1206 ehea_error("failed resensing port "
1207 "attributes");
1208 break;
1209 }
1210
1211 if (netif_msg_link(port))
1212 ehea_info("%s: Logical port up: %dMbps "
1213 "%s Duplex",
1214 port->netdev->name,
1215 port->port_speed,
1216 port->full_duplex ==
1217 1 ? "Full" : "Half");
1218
1219 netif_carrier_on(port->netdev);
1220 netif_wake_queue(port->netdev);
1221 }
1222 } else
1223 if (netif_carrier_ok(port->netdev)) {
1224 if (netif_msg_link(port))
1225 ehea_info("%s: Logical port down",
1226 port->netdev->name);
1227 netif_carrier_off(port->netdev);
1228 netif_stop_queue(port->netdev);
1229 }
1230
1231 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PORT_UP, eqe)) {
8759cf76 1232 port->phy_link = EHEA_PHY_LINK_UP;
7a291083
JBT		 1233 if (netif_msg_link(port))
1234 ehea_info("%s: Physical port up",
1235 port->netdev->name);
8759cf76
JBT		 1236 if (prop_carrier_state)
1237 netif_carrier_on(port->netdev);
7a291083 1238 } else {
8759cf76 1239 port->phy_link = EHEA_PHY_LINK_DOWN;
7a291083
JBT		 1240 if (netif_msg_link(port))
1241 ehea_info("%s: Physical port down",
1242 port->netdev->name);
8759cf76
JBT		 1243 if (prop_carrier_state)
1244 netif_carrier_off(port->netdev);
7a291083
JBT		 1245 }
1246
1247 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PRIMARY, eqe))
1248 ehea_info("External switch port is primary port");
1249 else
1250 ehea_info("External switch port is backup port");
1251
1252 break;
1253 case EHEA_EC_ADAPTER_MALFUNC:
1254 ehea_error("Adapter malfunction");
1255 break;
1256 case EHEA_EC_PORT_MALFUNC:
1257 ehea_info("Port malfunction: Device: %s", port->netdev->name);
1258 netif_carrier_off(port->netdev);
1259 netif_stop_queue(port->netdev);
1260 break;
1261 default:
a1c5a893 1262 ehea_error("unknown event code %x, eqe=0x%llX", ec, eqe);
7a291083
JBT		 1263 break;
1264 }
1265}
1266
1267static void ehea_neq_tasklet(unsigned long data)
1268{
508d2b5d 1269 struct ehea_adapter *adapter = (struct ehea_adapter *)data;
7a291083
JBT		 1270 struct ehea_eqe *eqe;
1271 u64 event_mask;
1272
1273 eqe = ehea_poll_eq(adapter->neq);
1274 ehea_debug("eqe=%p", eqe);
1275
1276 while (eqe) {
1277 ehea_debug("*eqe=%lx", eqe->entry);
1278 ehea_parse_eqe(adapter, eqe->entry);
1279 eqe = ehea_poll_eq(adapter->neq);
1280 ehea_debug("next eqe=%p", eqe);
1281 }
1282
1283 event_mask = EHEA_BMASK_SET(NELR_PORTSTATE_CHG, 1)
1284 | EHEA_BMASK_SET(NELR_ADAPTER_MALFUNC, 1)
1285 | EHEA_BMASK_SET(NELR_PORT_MALFUNC, 1);
1286
1287 ehea_h_reset_events(adapter->handle,
1288 adapter->neq->fw_handle, event_mask);
1289}
1290
7d12e780 1291static irqreturn_t ehea_interrupt_neq(int irq, void *param)
7a291083
JBT		 1292{
1293 struct ehea_adapter *adapter = param;
1294 tasklet_hi_schedule(&adapter->neq_tasklet);
1295 return IRQ_HANDLED;
1296}
1297
1298
1299static int ehea_fill_port_res(struct ehea_port_res *pr)
1300{
1301 int ret;
1302 struct ehea_qp_init_attr *init_attr = &pr->qp->init_attr;
1303
e2878806
TK		 1304 ehea_init_fill_rq1(pr, init_attr->act_nr_rwqes_rq1
1305 - init_attr->act_nr_rwqes_rq2
1306 - init_attr->act_nr_rwqes_rq3 - 1);
7a291083 1307
e2878806 1308 ret = ehea_refill_rq2(pr, init_attr->act_nr_rwqes_rq2 - 1);
7a291083
JBT		 1309
1310 ret |= ehea_refill_rq3(pr, init_attr->act_nr_rwqes_rq3 - 1);
1311
1312 return ret;
1313}
1314
1315static int ehea_reg_interrupts(struct net_device *dev)
1316{
1317 struct ehea_port *port = netdev_priv(dev);
1318 struct ehea_port_res *pr;
1319 int i, ret;
1320
7a291083
JBT		 1321
1322 snprintf(port->int_aff_name, EHEA_IRQ_NAME_SIZE - 1, "%s-aff",
1323 dev->name);
1324
6b08f3ae 1325 ret = ibmebus_request_irq(port->qp_eq->attr.ist1,
7a291083 1326 ehea_qp_aff_irq_handler,
38515e90 1327 IRQF_DISABLED, port->int_aff_name, port);
7a291083
JBT		 1328 if (ret) {
1329 ehea_error("failed registering irq for qp_aff_irq_handler:"
1330 "ist=%X", port->qp_eq->attr.ist1);
1331 goto out_free_qpeq;
1332 }
1333
1334 if (netif_msg_ifup(port))
1335 ehea_info("irq_handle 0x%X for function qp_aff_irq_handler "
1336 "registered", port->qp_eq->attr.ist1);
1337
18604c54 1338
7a291083
JBT		 1339 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
1340 pr = &port->port_res[i];
1341 snprintf(pr->int_send_name, EHEA_IRQ_NAME_SIZE - 1,
18604c54 1342 "%s-queue%d", dev->name, i);
6b08f3ae 1343 ret = ibmebus_request_irq(pr->eq->attr.ist1,
18604c54 1344 ehea_recv_irq_handler,
38515e90 1345 IRQF_DISABLED, pr->int_send_name,
7a291083
JBT		 1346 pr);
1347 if (ret) {
18604c54 1348 ehea_error("failed registering irq for ehea_queue "
7a291083 1349 "port_res_nr:%d, ist=%X", i,
18604c54 1350 pr->eq->attr.ist1);
7a291083
JBT		 1351 goto out_free_req;
1352 }
1353 if (netif_msg_ifup(port))
18604c54
JBT		 1354 ehea_info("irq_handle 0x%X for function ehea_queue_int "
1355 "%d registered", pr->eq->attr.ist1, i);
7a291083
JBT		 1356 }
1357out:
1358 return ret;
1359
18604c54 1360
7a291083
JBT		 1361out_free_req:
1362 while (--i >= 0) {
18604c54 1363 u32 ist = port->port_res[i].eq->attr.ist1;
6b08f3ae 1364 ibmebus_free_irq(ist, &port->port_res[i]);
7a291083 1365 }
18604c54 1366
7a291083 1367out_free_qpeq:
6b08f3ae 1368 ibmebus_free_irq(port->qp_eq->attr.ist1, port);
7a291083 1369 i = port->num_def_qps;
18604c54 1370
7a291083 1371 goto out;
18604c54 1372
7a291083
JBT		 1373}
1374
1375static void ehea_free_interrupts(struct net_device *dev)
1376{
1377 struct ehea_port *port = netdev_priv(dev);
1378 struct ehea_port_res *pr;
1379 int i;
1380
1381 /* send */
18604c54 1382
7a291083
JBT		 1383 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
1384 pr = &port->port_res[i];
6b08f3ae 1385 ibmebus_free_irq(pr->eq->attr.ist1, pr);
7a291083
JBT		 1386 if (netif_msg_intr(port))
1387 ehea_info("free send irq for res %d with handle 0x%X",
18604c54 1388 i, pr->eq->attr.ist1);
7a291083
JBT		 1389 }
1390
1391 /* associated events */
6b08f3ae 1392 ibmebus_free_irq(port->qp_eq->attr.ist1, port);
7a291083
JBT		 1393 if (netif_msg_intr(port))
1394 ehea_info("associated event interrupt for handle 0x%X freed",
1395 port->qp_eq->attr.ist1);
1396}
1397
1398static int ehea_configure_port(struct ehea_port *port)
1399{
1400 int ret, i;
1401 u64 hret, mask;
1402 struct hcp_ehea_port_cb0 *cb0;
1403
1404 ret = -ENOMEM;
3faf2693 1405 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083
JBT		 1406 if (!cb0)
1407 goto out;
1408
1409 cb0->port_rc = EHEA_BMASK_SET(PXLY_RC_VALID, 1)
1410 | EHEA_BMASK_SET(PXLY_RC_IP_CHKSUM, 1)
1411 | EHEA_BMASK_SET(PXLY_RC_TCP_UDP_CHKSUM, 1)
1412 | EHEA_BMASK_SET(PXLY_RC_VLAN_XTRACT, 1)
1413 | EHEA_BMASK_SET(PXLY_RC_VLAN_TAG_FILTER,
1414 PXLY_RC_VLAN_FILTER)
1415 | EHEA_BMASK_SET(PXLY_RC_JUMBO_FRAME, 1);
1416
18604c54
JBT		 1417 for (i = 0; i < port->num_mcs; i++)
1418 if (use_mcs)
1419 cb0->default_qpn_arr[i] =
1420 port->port_res[i].qp->init_attr.qp_nr;
1421 else
1422 cb0->default_qpn_arr[i] =
1423 port->port_res[0].qp->init_attr.qp_nr;
e542aa6b 1424
7a291083
JBT		 1425 if (netif_msg_ifup(port))
1426 ehea_dump(cb0, sizeof(*cb0), "ehea_configure_port");
1427
1428 mask = EHEA_BMASK_SET(H_PORT_CB0_PRC, 1)
1429 | EHEA_BMASK_SET(H_PORT_CB0_DEFQPNARRAY, 1);
1430
1431 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1432 port->logical_port_id,
1433 H_PORT_CB0, mask, cb0);
1434 ret = -EIO;
1435 if (hret != H_SUCCESS)
1436 goto out_free;
1437
1438 ret = 0;
1439
1440out_free:
3faf2693 1441 free_page((unsigned long)cb0);
7a291083
JBT		 1442out:
1443 return ret;
1444}
1445
e542aa6b 1446int ehea_gen_smrs(struct ehea_port_res *pr)
7a291083 1447{
e542aa6b 1448 int ret;
7a291083
JBT		 1449 struct ehea_adapter *adapter = pr->port->adapter;
1450
e542aa6b
JBT		 1451 ret = ehea_gen_smr(adapter, &adapter->mr, &pr->send_mr);
1452 if (ret)
7a291083
JBT		 1453 goto out;
1454
e542aa6b
JBT		 1455 ret = ehea_gen_smr(adapter, &adapter->mr, &pr->recv_mr);
1456 if (ret)
1457 goto out_free;
7a291083
JBT		 1458
1459 return 0;
1460
e542aa6b
JBT		 1461out_free:
1462 ehea_rem_mr(&pr->send_mr);
7a291083 1463out:
e542aa6b 1464 ehea_error("Generating SMRS failed\n");
7a291083
JBT		 1465 return -EIO;
1466}
1467
e542aa6b 1468int ehea_rem_smrs(struct ehea_port_res *pr)
7a291083 1469{
8e95a202
JP		 1470 if ((ehea_rem_mr(&pr->send_mr)) ||
1471 (ehea_rem_mr(&pr->recv_mr)))
e542aa6b
JBT		 1472 return -EIO;
1473 else
1474 return 0;
7a291083
JBT		 1475}
1476
1477static int ehea_init_q_skba(struct ehea_q_skb_arr *q_skba, int max_q_entries)
1478{
508d2b5d 1479 int arr_size = sizeof(void *) * max_q_entries;
7a291083
JBT		 1480
1481 q_skba->arr = vmalloc(arr_size);
1482 if (!q_skba->arr)
1483 return -ENOMEM;
1484
1485 memset(q_skba->arr, 0, arr_size);
1486
1487 q_skba->len = max_q_entries;
1488 q_skba->index = 0;
1489 q_skba->os_skbs = 0;
1490
1491 return 0;
1492}
1493
1494static int ehea_init_port_res(struct ehea_port *port, struct ehea_port_res *pr,
1495 struct port_res_cfg *pr_cfg, int queue_token)
1496{
1497 struct ehea_adapter *adapter = port->adapter;
1498 enum ehea_eq_type eq_type = EHEA_EQ;
1499 struct ehea_qp_init_attr *init_attr = NULL;
1500 int ret = -EIO;
1501
1502 memset(pr, 0, sizeof(struct ehea_port_res));
1503
1504 pr->port = port;
7a291083
JBT		 1505 spin_lock_init(&pr->xmit_lock);
1506 spin_lock_init(&pr->netif_queue);
1507
18604c54
JBT		 1508 pr->eq = ehea_create_eq(adapter, eq_type, EHEA_MAX_ENTRIES_EQ, 0);
1509 if (!pr->eq) {
1510 ehea_error("create_eq failed (eq)");
7a291083
JBT		 1511 goto out_free;
1512 }
1513
1514 pr->recv_cq = ehea_create_cq(adapter, pr_cfg->max_entries_rcq,
18604c54 1515 pr->eq->fw_handle,
7a291083
JBT		 1516 port->logical_port_id);
1517 if (!pr->recv_cq) {
1518 ehea_error("create_cq failed (cq_recv)");
1519 goto out_free;
1520 }
1521
1522 pr->send_cq = ehea_create_cq(adapter, pr_cfg->max_entries_scq,
18604c54 1523 pr->eq->fw_handle,
7a291083
JBT		 1524 port->logical_port_id);
1525 if (!pr->send_cq) {
1526 ehea_error("create_cq failed (cq_send)");
1527 goto out_free;
1528 }
1529
1530 if (netif_msg_ifup(port))
1531 ehea_info("Send CQ: act_nr_cqes=%d, Recv CQ: act_nr_cqes=%d",
1532 pr->send_cq->attr.act_nr_of_cqes,
1533 pr->recv_cq->attr.act_nr_of_cqes);
1534
1535 init_attr = kzalloc(sizeof(*init_attr), GFP_KERNEL);
1536 if (!init_attr) {
1537 ret = -ENOMEM;
1538 ehea_error("no mem for ehea_qp_init_attr");
1539 goto out_free;
1540 }
1541
1542 init_attr->low_lat_rq1 = 1;
1543 init_attr->signalingtype = 1; /* generate CQE if specified in WQE */
1544 init_attr->rq_count = 3;
1545 init_attr->qp_token = queue_token;
1546 init_attr->max_nr_send_wqes = pr_cfg->max_entries_sq;
1547 init_attr->max_nr_rwqes_rq1 = pr_cfg->max_entries_rq1;
1548 init_attr->max_nr_rwqes_rq2 = pr_cfg->max_entries_rq2;
1549 init_attr->max_nr_rwqes_rq3 = pr_cfg->max_entries_rq3;
1550 init_attr->wqe_size_enc_sq = EHEA_SG_SQ;
1551 init_attr->wqe_size_enc_rq1 = EHEA_SG_RQ1;
1552 init_attr->wqe_size_enc_rq2 = EHEA_SG_RQ2;
1553 init_attr->wqe_size_enc_rq3 = EHEA_SG_RQ3;
1554 init_attr->rq2_threshold = EHEA_RQ2_THRESHOLD;
1555 init_attr->rq3_threshold = EHEA_RQ3_THRESHOLD;
1556 init_attr->port_nr = port->logical_port_id;
1557 init_attr->send_cq_handle = pr->send_cq->fw_handle;
1558 init_attr->recv_cq_handle = pr->recv_cq->fw_handle;
1559 init_attr->aff_eq_handle = port->qp_eq->fw_handle;
1560
1561 pr->qp = ehea_create_qp(adapter, adapter->pd, init_attr);
1562 if (!pr->qp) {
1563 ehea_error("create_qp failed");
1564 ret = -EIO;
1565 goto out_free;
1566 }
1567
1568 if (netif_msg_ifup(port))
1569 ehea_info("QP: qp_nr=%d\n act_nr_snd_wqe=%d\n nr_rwqe_rq1=%d\n "
1570 "nr_rwqe_rq2=%d\n nr_rwqe_rq3=%d", init_attr->qp_nr,
1571 init_attr->act_nr_send_wqes,
1572 init_attr->act_nr_rwqes_rq1,
1573 init_attr->act_nr_rwqes_rq2,
1574 init_attr->act_nr_rwqes_rq3);
1575
44fb3126
TK		 1576 pr->sq_skba_size = init_attr->act_nr_send_wqes + 1;
1577
1578 ret = ehea_init_q_skba(&pr->sq_skba, pr->sq_skba_size);
7a291083
JBT		 1579 ret |= ehea_init_q_skba(&pr->rq1_skba, init_attr->act_nr_rwqes_rq1 + 1);
1580 ret |= ehea_init_q_skba(&pr->rq2_skba, init_attr->act_nr_rwqes_rq2 + 1);
1581 ret |= ehea_init_q_skba(&pr->rq3_skba, init_attr->act_nr_rwqes_rq3 + 1);
1582 if (ret)
1583 goto out_free;
1584
1585 pr->swqe_refill_th = init_attr->act_nr_send_wqes / 10;
1586 if (ehea_gen_smrs(pr) != 0) {
1587 ret = -EIO;
1588 goto out_free;
1589 }
18604c54 1590
7a291083
JBT		 1591 atomic_set(&pr->swqe_avail, init_attr->act_nr_send_wqes - 1);
1592
1593 kfree(init_attr);
18604c54 1594
bea3348e 1595 netif_napi_add(pr->port->netdev, &pr->napi, ehea_poll, 64);
18604c54 1596
d4dc4ec9
JBT		 1597 pr->lro_mgr.max_aggr = pr->port->lro_max_aggr;
1598 pr->lro_mgr.max_desc = MAX_LRO_DESCRIPTORS;
1599 pr->lro_mgr.lro_arr = pr->lro_desc;
1600 pr->lro_mgr.get_skb_header = get_skb_hdr;
1601 pr->lro_mgr.features = LRO_F_NAPI | LRO_F_EXTRACT_VLAN_ID;
1602 pr->lro_mgr.dev = port->netdev;
1603 pr->lro_mgr.ip_summed = CHECKSUM_UNNECESSARY;
1604 pr->lro_mgr.ip_summed_aggr = CHECKSUM_UNNECESSARY;
1605
7a291083
JBT		 1606 ret = 0;
1607 goto out;
1608
1609out_free:
1610 kfree(init_attr);
1611 vfree(pr->sq_skba.arr);
1612 vfree(pr->rq1_skba.arr);
1613 vfree(pr->rq2_skba.arr);
1614 vfree(pr->rq3_skba.arr);
1615 ehea_destroy_qp(pr->qp);
1616 ehea_destroy_cq(pr->send_cq);
1617 ehea_destroy_cq(pr->recv_cq);
18604c54 1618 ehea_destroy_eq(pr->eq);
7a291083
JBT		 1619out:
1620 return ret;
1621}
1622
1623static int ehea_clean_portres(struct ehea_port *port, struct ehea_port_res *pr)
1624{
1625 int ret, i;
1626
357eb46d
HH		 1627 if (pr->qp)
1628 netif_napi_del(&pr->napi);
1629
7a291083
JBT		 1630 ret = ehea_destroy_qp(pr->qp);
1631
1632 if (!ret) {
1633 ehea_destroy_cq(pr->send_cq);
1634 ehea_destroy_cq(pr->recv_cq);
18604c54 1635 ehea_destroy_eq(pr->eq);
7a291083
JBT		 1636
1637 for (i = 0; i < pr->rq1_skba.len; i++)
1638 if (pr->rq1_skba.arr[i])
1639 dev_kfree_skb(pr->rq1_skba.arr[i]);
1640
1641 for (i = 0; i < pr->rq2_skba.len; i++)
1642 if (pr->rq2_skba.arr[i])
1643 dev_kfree_skb(pr->rq2_skba.arr[i]);
1644
1645 for (i = 0; i < pr->rq3_skba.len; i++)
1646 if (pr->rq3_skba.arr[i])
1647 dev_kfree_skb(pr->rq3_skba.arr[i]);
1648
1649 for (i = 0; i < pr->sq_skba.len; i++)
1650 if (pr->sq_skba.arr[i])
1651 dev_kfree_skb(pr->sq_skba.arr[i]);
1652
1653 vfree(pr->rq1_skba.arr);
1654 vfree(pr->rq2_skba.arr);
1655 vfree(pr->rq3_skba.arr);
1656 vfree(pr->sq_skba.arr);
1657 ret = ehea_rem_smrs(pr);
1658 }
1659 return ret;
1660}
1661
1662/*
1663 * The write_* functions store information in swqe which is used by
1664 * the hardware to calculate the ip/tcp/udp checksum
1665 */
1666
1667static inline void write_ip_start_end(struct ehea_swqe *swqe,
1668 const struct sk_buff *skb)
1669{
eddc9ec5 1670 swqe->ip_start = skb_network_offset(skb);
c9bdd4b5 1671 swqe->ip_end = (u8)(swqe->ip_start + ip_hdrlen(skb) - 1);
7a291083
JBT		 1672}
1673
1674static inline void write_tcp_offset_end(struct ehea_swqe *swqe,
1675 const struct sk_buff *skb)
1676{
1677 swqe->tcp_offset =
1678 (u8)(swqe->ip_end + 1 + offsetof(struct tcphdr, check));
1679
1680 swqe->tcp_end = (u16)skb->len - 1;
1681}
1682
1683static inline void write_udp_offset_end(struct ehea_swqe *swqe,
1684 const struct sk_buff *skb)
1685{
1686 swqe->tcp_offset =
1687 (u8)(swqe->ip_end + 1 + offsetof(struct udphdr, check));
1688
1689 swqe->tcp_end = (u16)skb->len - 1;
1690}
1691
1692
1693static void write_swqe2_TSO(struct sk_buff *skb,
1694 struct ehea_swqe *swqe, u32 lkey)
1695{
1696 struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry;
1697 u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0];
e743d313 1698 int skb_data_size = skb_headlen(skb);
7a291083 1699 int headersize;
7a291083
JBT		 1700
1701 /* Packet is TCP with TSO enabled */
1702 swqe->tx_control |= EHEA_SWQE_TSO;
1703 swqe->mss = skb_shinfo(skb)->gso_size;
1704 /* copy only eth/ip/tcp headers to immediate data and
1705 * the rest of skb->data to sg1entry
1706 */
ab6a5bb6 1707 headersize = ETH_HLEN + ip_hdrlen(skb) + tcp_hdrlen(skb);
7a291083 1708
e743d313 1709 skb_data_size = skb_headlen(skb);
7a291083
JBT		 1710
1711 if (skb_data_size >= headersize) {
1712 /* copy immediate data */
d626f62b 1713 skb_copy_from_linear_data(skb, imm_data, headersize);
7a291083
JBT		 1714 swqe->immediate_data_length = headersize;
1715
1716 if (skb_data_size > headersize) {
1717 /* set sg1entry data */
1718 sg1entry->l_key = lkey;
1719 sg1entry->len = skb_data_size - headersize;
44a5b3d5
TK		 1720 sg1entry->vaddr =
1721 ehea_map_vaddr(skb->data + headersize);
7a291083
JBT		 1722 swqe->descriptors++;
1723 }
1724 } else
1725 ehea_error("cannot handle fragmented headers");
1726}
1727
1728static void write_swqe2_nonTSO(struct sk_buff *skb,
1729 struct ehea_swqe *swqe, u32 lkey)
1730{
e743d313 1731 int skb_data_size = skb_headlen(skb);
7a291083
JBT		 1732 u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0];
1733 struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry;
7a291083
JBT		 1734
1735 /* Packet is any nonTSO type
1736 *
1737 * Copy as much as possible skb->data to immediate data and
1738 * the rest to sg1entry
1739 */
1740 if (skb_data_size >= SWQE2_MAX_IMM) {
1741 /* copy immediate data */
d626f62b 1742 skb_copy_from_linear_data(skb, imm_data, SWQE2_MAX_IMM);
7a291083
JBT		 1743
1744 swqe->immediate_data_length = SWQE2_MAX_IMM;
1745
1746 if (skb_data_size > SWQE2_MAX_IMM) {
1747 /* copy sg1entry data */
1748 sg1entry->l_key = lkey;
1749 sg1entry->len = skb_data_size - SWQE2_MAX_IMM;
44a5b3d5
TK		 1750 sg1entry->vaddr =
1751 ehea_map_vaddr(skb->data + SWQE2_MAX_IMM);
7a291083
JBT		 1752 swqe->descriptors++;
1753 }
1754 } else {
d626f62b 1755 skb_copy_from_linear_data(skb, imm_data, skb_data_size);
7a291083
JBT		 1756 swqe->immediate_data_length = skb_data_size;
1757 }
1758}
1759
1760static inline void write_swqe2_data(struct sk_buff *skb, struct net_device *dev,
1761 struct ehea_swqe *swqe, u32 lkey)
1762{
1763 struct ehea_vsgentry *sg_list, *sg1entry, *sgentry;
1764 skb_frag_t *frag;
1765 int nfrags, sg1entry_contains_frag_data, i;
7a291083
JBT		 1766
1767 nfrags = skb_shinfo(skb)->nr_frags;
1768 sg1entry = &swqe->u.immdata_desc.sg_entry;
508d2b5d 1769 sg_list = (struct ehea_vsgentry *)&swqe->u.immdata_desc.sg_list;
7a291083
JBT		 1770 swqe->descriptors = 0;
1771 sg1entry_contains_frag_data = 0;
1772
1773 if ((dev->features & NETIF_F_TSO) && skb_shinfo(skb)->gso_size)
1774 write_swqe2_TSO(skb, swqe, lkey);
1775 else
1776 write_swqe2_nonTSO(skb, swqe, lkey);
1777
1778 /* write descriptors */
1779 if (nfrags > 0) {
1780 if (swqe->descriptors == 0) {
1781 /* sg1entry not yet used */
1782 frag = &skb_shinfo(skb)->frags[0];
1783
1784 /* copy sg1entry data */
1785 sg1entry->l_key = lkey;
1786 sg1entry->len = frag->size;
44a5b3d5
TK		 1787 sg1entry->vaddr =
1788 ehea_map_vaddr(page_address(frag->page)
1789 + frag->page_offset);
7a291083
JBT		 1790 swqe->descriptors++;
1791 sg1entry_contains_frag_data = 1;
1792 }
1793
1794 for (i = sg1entry_contains_frag_data; i < nfrags; i++) {
1795
1796 frag = &skb_shinfo(skb)->frags[i];
1797 sgentry = &sg_list[i - sg1entry_contains_frag_data];
1798
1799 sgentry->l_key = lkey;
1800 sgentry->len = frag->size;
44a5b3d5
TK		 1801 sgentry->vaddr =
1802 ehea_map_vaddr(page_address(frag->page)
1803 + frag->page_offset);
7a291083
JBT		 1804 swqe->descriptors++;
1805 }
1806 }
1807}
1808
1809static int ehea_broadcast_reg_helper(struct ehea_port *port, u32 hcallid)
1810{
1811 int ret = 0;
1812 u64 hret;
1813 u8 reg_type;
1814
1815 /* De/Register untagged packets */
1816 reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_UNTAGGED;
1817 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1818 port->logical_port_id,
1819 reg_type, port->mac_addr, 0, hcallid);
1820 if (hret != H_SUCCESS) {
f9e29228 1821 ehea_error("%sregistering bc address failed (tagged)",
508d2b5d 1822 hcallid == H_REG_BCMC ? "" : "de");
7a291083
JBT		 1823 ret = -EIO;
1824 goto out_herr;
1825 }
1826
1827 /* De/Register VLAN packets */
1828 reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_VLANID_ALL;
1829 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1830 port->logical_port_id,
1831 reg_type, port->mac_addr, 0, hcallid);
1832 if (hret != H_SUCCESS) {
f9e29228
TK		 1833 ehea_error("%sregistering bc address failed (vlan)",
1834 hcallid == H_REG_BCMC ? "" : "de");
7a291083
JBT		 1835 ret = -EIO;
1836 }
1837out_herr:
1838 return ret;
1839}
1840
1841static int ehea_set_mac_addr(struct net_device *dev, void *sa)
1842{
1843 struct ehea_port *port = netdev_priv(dev);
1844 struct sockaddr *mac_addr = sa;
1845 struct hcp_ehea_port_cb0 *cb0;
1846 int ret;
1847 u64 hret;
1848
1849 if (!is_valid_ether_addr(mac_addr->sa_data)) {
1850 ret = -EADDRNOTAVAIL;
1851 goto out;
1852 }
1853
3faf2693 1854 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083
JBT		 1855 if (!cb0) {
1856 ehea_error("no mem for cb0");
1857 ret = -ENOMEM;
1858 goto out;
1859 }
1860
1861 memcpy(&(cb0->port_mac_addr), &(mac_addr->sa_data[0]), ETH_ALEN);
1862
1863 cb0->port_mac_addr = cb0->port_mac_addr >> 16;
1864
1865 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1866 port->logical_port_id, H_PORT_CB0,
1867 EHEA_BMASK_SET(H_PORT_CB0_MAC, 1), cb0);
1868 if (hret != H_SUCCESS) {
1869 ret = -EIO;
1870 goto out_free;
1871 }
1872
1873 memcpy(dev->dev_addr, mac_addr->sa_data, dev->addr_len);
1874
1875 /* Deregister old MAC in pHYP */
00aaea2f
JBT		 1876 if (port->state == EHEA_PORT_UP) {
1877 ret = ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
1878 if (ret)
1879 goto out_upregs;
1880 }
7a291083
JBT		 1881
1882 port->mac_addr = cb0->port_mac_addr << 16;
1883
1884 /* Register new MAC in pHYP */
00aaea2f
JBT		 1885 if (port->state == EHEA_PORT_UP) {
1886 ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
1887 if (ret)
1888 goto out_upregs;
1889 }
7a291083
JBT		 1890
1891 ret = 0;
21eee2dd
TK		 1892
1893out_upregs:
1894 ehea_update_bcmc_registrations();
7a291083 1895out_free:
3faf2693 1896 free_page((unsigned long)cb0);
7a291083
JBT		 1897out:
1898 return ret;
1899}
1900
1901static void ehea_promiscuous_error(u64 hret, int enable)
1902{
7674a588
TK		 1903 if (hret == H_AUTHORITY)
1904 ehea_info("Hypervisor denied %sabling promiscuous mode",
1905 enable == 1 ? "en" : "dis");
1906 else
1907 ehea_error("failed %sabling promiscuous mode",
1908 enable == 1 ? "en" : "dis");
7a291083
JBT		 1909}
1910
1911static void ehea_promiscuous(struct net_device *dev, int enable)
1912{
1913 struct ehea_port *port = netdev_priv(dev);
1914 struct hcp_ehea_port_cb7 *cb7;
1915 u64 hret;
1916
1917 if ((enable && port->promisc) || (!enable && !port->promisc))
1918 return;
1919
3faf2693 1920 cb7 = (void *)get_zeroed_page(GFP_ATOMIC);
7a291083
JBT		 1921 if (!cb7) {
1922 ehea_error("no mem for cb7");
1923 goto out;
1924 }
1925
1926 /* Modify Pxs_DUCQPN in CB7 */
1927 cb7->def_uc_qpn = enable == 1 ? port->port_res[0].qp->fw_handle : 0;
1928
1929 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1930 port->logical_port_id,
1931 H_PORT_CB7, H_PORT_CB7_DUCQPN, cb7);
1932 if (hret) {
1933 ehea_promiscuous_error(hret, enable);
1934 goto out;
1935 }
1936
1937 port->promisc = enable;
1938out:
3faf2693 1939 free_page((unsigned long)cb7);
7a291083
JBT		 1940}
1941
1942static u64 ehea_multicast_reg_helper(struct ehea_port *port, u64 mc_mac_addr,
1943 u32 hcallid)
1944{
1945 u64 hret;
1946 u8 reg_type;
1947
1948 reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST
1949 | EHEA_BCMC_UNTAGGED;
1950
1951 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1952 port->logical_port_id,
1953 reg_type, mc_mac_addr, 0, hcallid);
1954 if (hret)
1955 goto out;
1956
1957 reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST
1958 | EHEA_BCMC_VLANID_ALL;
1959
1960 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1961 port->logical_port_id,
1962 reg_type, mc_mac_addr, 0, hcallid);
1963out:
1964 return hret;
1965}
1966
1967static int ehea_drop_multicast_list(struct net_device *dev)
1968{
1969 struct ehea_port *port = netdev_priv(dev);
1970 struct ehea_mc_list *mc_entry = port->mc_list;
1971 struct list_head *pos;
1972 struct list_head *temp;
1973 int ret = 0;
1974 u64 hret;
1975
1976 list_for_each_safe(pos, temp, &(port->mc_list->list)) {
1977 mc_entry = list_entry(pos, struct ehea_mc_list, list);
1978
1979 hret = ehea_multicast_reg_helper(port, mc_entry->macaddr,
1980 H_DEREG_BCMC);
1981 if (hret) {
1982 ehea_error("failed deregistering mcast MAC");
1983 ret = -EIO;
1984 }
1985
1986 list_del(pos);
1987 kfree(mc_entry);
1988 }
1989 return ret;
1990}
1991
1992static void ehea_allmulti(struct net_device *dev, int enable)
1993{
1994 struct ehea_port *port = netdev_priv(dev);
1995 u64 hret;
1996
1997 if (!port->allmulti) {
1998 if (enable) {
1999 /* Enable ALLMULTI */
2000 ehea_drop_multicast_list(dev);
2001 hret = ehea_multicast_reg_helper(port, 0, H_REG_BCMC);
2002 if (!hret)
2003 port->allmulti = 1;
2004 else
2005 ehea_error("failed enabling IFF_ALLMULTI");
2006 }
2007 } else
2008 if (!enable) {
2009 /* Disable ALLMULTI */
2010 hret = ehea_multicast_reg_helper(port, 0, H_DEREG_BCMC);
2011 if (!hret)
2012 port->allmulti = 0;
2013 else
2014 ehea_error("failed disabling IFF_ALLMULTI");
2015 }
2016}
2017
508d2b5d 2018static void ehea_add_multicast_entry(struct ehea_port *port, u8 *mc_mac_addr)
7a291083
JBT		 2019{
2020 struct ehea_mc_list *ehea_mcl_entry;
2021 u64 hret;
2022
1e1675cc 2023 ehea_mcl_entry = kzalloc(sizeof(*ehea_mcl_entry), GFP_ATOMIC);
7a291083
JBT		 2024 if (!ehea_mcl_entry) {
2025 ehea_error("no mem for mcl_entry");
2026 return;
2027 }
2028
2029 INIT_LIST_HEAD(&ehea_mcl_entry->list);
2030
2031 memcpy(&ehea_mcl_entry->macaddr, mc_mac_addr, ETH_ALEN);
2032
2033 hret = ehea_multicast_reg_helper(port, ehea_mcl_entry->macaddr,
2034 H_REG_BCMC);
2035 if (!hret)
2036 list_add(&ehea_mcl_entry->list, &port->mc_list->list);
2037 else {
2038 ehea_error("failed registering mcast MAC");
2039 kfree(ehea_mcl_entry);
2040 }
2041}
2042
2043static void ehea_set_multicast_list(struct net_device *dev)
2044{
2045 struct ehea_port *port = netdev_priv(dev);
22bedad3 2046 struct netdev_hw_addr *ha;
48e2f183 2047 int ret;
7a291083
JBT		 2048
2049 if (dev->flags & IFF_PROMISC) {
2050 ehea_promiscuous(dev, 1);
2051 return;
2052 }
2053 ehea_promiscuous(dev, 0);
2054
2055 if (dev->flags & IFF_ALLMULTI) {
2056 ehea_allmulti(dev, 1);
21eee2dd 2057 goto out;
7a291083
JBT		 2058 }
2059 ehea_allmulti(dev, 0);
2060
4cd24eaf 2061 if (!netdev_mc_empty(dev)) {
7a291083
JBT		 2062 ret = ehea_drop_multicast_list(dev);
2063 if (ret) {
2064 /* Dropping the current multicast list failed.
2065 * Enabling ALL_MULTI is the best we can do.
2066 */
2067 ehea_allmulti(dev, 1);
2068 }
2069
4cd24eaf 2070 if (netdev_mc_count(dev) > port->adapter->max_mc_mac) {
a1c5a893 2071 ehea_info("Mcast registration limit reached (0x%llx). "
7a291083
JBT		 2072 "Use ALLMULTI!",
2073 port->adapter->max_mc_mac);
2074 goto out;
2075 }
2076
22bedad3
JP		 2077 netdev_for_each_mc_addr(ha, dev)
2078 ehea_add_multicast_entry(port, ha->addr);
508d2b5d 2079
7a291083
JBT		 2080 }
2081out:
21eee2dd 2082 ehea_update_bcmc_registrations();
7a291083
JBT		 2083}
2084
2085static int ehea_change_mtu(struct net_device *dev, int new_mtu)
2086{
2087 if ((new_mtu < 68) || (new_mtu > EHEA_MAX_PACKET_SIZE))
2088 return -EINVAL;
2089 dev->mtu = new_mtu;
2090 return 0;
2091}
2092
2093static void ehea_xmit2(struct sk_buff *skb, struct net_device *dev,
2094 struct ehea_swqe *swqe, u32 lkey)
2095{
2096 if (skb->protocol == htons(ETH_P_IP)) {
eddc9ec5 2097 const struct iphdr *iph = ip_hdr(skb);
d1d25aab 2098
7a291083
JBT		 2099 /* IPv4 */
2100 swqe->tx_control |= EHEA_SWQE_CRC
2101 | EHEA_SWQE_IP_CHECKSUM
2102 | EHEA_SWQE_TCP_CHECKSUM
2103 | EHEA_SWQE_IMM_DATA_PRESENT
2104 | EHEA_SWQE_DESCRIPTORS_PRESENT;
2105
2106 write_ip_start_end(swqe, skb);
2107
eddc9ec5 2108 if (iph->protocol == IPPROTO_UDP) {
8e95a202
JP		 2109 if ((iph->frag_off & IP_MF) ||
2110 (iph->frag_off & IP_OFFSET))
7a291083
JBT		 2111 /* IP fragment, so don't change cs */
2112 swqe->tx_control &= ~EHEA_SWQE_TCP_CHECKSUM;
2113 else
2114 write_udp_offset_end(swqe, skb);
eddc9ec5 2115 } else if (iph->protocol == IPPROTO_TCP) {
7a291083
JBT		 2116 write_tcp_offset_end(swqe, skb);
2117 }
2118
2119 /* icmp (big data) and ip segmentation packets (all other ip
2120 packets) do not require any special handling */
2121
2122 } else {
2123 /* Other Ethernet Protocol */
2124 swqe->tx_control |= EHEA_SWQE_CRC
2125 | EHEA_SWQE_IMM_DATA_PRESENT
2126 | EHEA_SWQE_DESCRIPTORS_PRESENT;
2127 }
2128
2129 write_swqe2_data(skb, dev, swqe, lkey);
2130}
2131
2132static void ehea_xmit3(struct sk_buff *skb, struct net_device *dev,
2133 struct ehea_swqe *swqe)
2134{
2135 int nfrags = skb_shinfo(skb)->nr_frags;
2136 u8 *imm_data = &swqe->u.immdata_nodesc.immediate_data[0];
2137 skb_frag_t *frag;
2138 int i;
2139
2140 if (skb->protocol == htons(ETH_P_IP)) {
eddc9ec5 2141 const struct iphdr *iph = ip_hdr(skb);
d1d25aab 2142
7a291083
JBT		 2143 /* IPv4 */
2144 write_ip_start_end(swqe, skb);
2145
eddc9ec5 2146 if (iph->protocol == IPPROTO_TCP) {
7a291083
JBT		 2147 swqe->tx_control |= EHEA_SWQE_CRC
2148 | EHEA_SWQE_IP_CHECKSUM
2149 | EHEA_SWQE_TCP_CHECKSUM
2150 | EHEA_SWQE_IMM_DATA_PRESENT;
2151
2152 write_tcp_offset_end(swqe, skb);
2153
eddc9ec5 2154 } else if (iph->protocol == IPPROTO_UDP) {
8e95a202
JP		 2155 if ((iph->frag_off & IP_MF) ||
2156 (iph->frag_off & IP_OFFSET))
7a291083
JBT		 2157 /* IP fragment, so don't change cs */
2158 swqe->tx_control |= EHEA_SWQE_CRC
2159 | EHEA_SWQE_IMM_DATA_PRESENT;
2160 else {
2161 swqe->tx_control |= EHEA_SWQE_CRC
2162 | EHEA_SWQE_IP_CHECKSUM
2163 | EHEA_SWQE_TCP_CHECKSUM
2164 | EHEA_SWQE_IMM_DATA_PRESENT;
2165
2166 write_udp_offset_end(swqe, skb);
2167 }
2168 } else {
2169 /* icmp (big data) and
2170 ip segmentation packets (all other ip packets) */
2171 swqe->tx_control |= EHEA_SWQE_CRC
2172 | EHEA_SWQE_IP_CHECKSUM
2173 | EHEA_SWQE_IMM_DATA_PRESENT;
2174 }
2175 } else {
2176 /* Other Ethernet Protocol */
2177 swqe->tx_control |= EHEA_SWQE_CRC | EHEA_SWQE_IMM_DATA_PRESENT;
2178 }
2179 /* copy (immediate) data */
2180 if (nfrags == 0) {
2181 /* data is in a single piece */
d626f62b 2182 skb_copy_from_linear_data(skb, imm_data, skb->len);
7a291083
JBT		 2183 } else {
2184 /* first copy data from the skb->data buffer ... */
d626f62b 2185 skb_copy_from_linear_data(skb, imm_data,
e743d313
ED		 2186 skb_headlen(skb));
2187 imm_data += skb_headlen(skb);
7a291083
JBT		 2188
2189 /* ... then copy data from the fragments */
2190 for (i = 0; i < nfrags; i++) {
2191 frag = &skb_shinfo(skb)->frags[i];
2192 memcpy(imm_data,
2193 page_address(frag->page) + frag->page_offset,
2194 frag->size);
2195 imm_data += frag->size;
2196 }
2197 }
2198 swqe->immediate_data_length = skb->len;
2199 dev_kfree_skb(skb);
2200}
2201
18604c54
JBT		 2202static inline int ehea_hash_skb(struct sk_buff *skb, int num_qps)
2203{
2204 struct tcphdr *tcp;
2205 u32 tmp;
2206
2207 if ((skb->protocol == htons(ETH_P_IP)) &&
88ca2d07 2208 (ip_hdr(skb)->protocol == IPPROTO_TCP)) {
508d2b5d
DM		 2209 tcp = (struct tcphdr *)(skb_network_header(skb) +
2210 (ip_hdr(skb)->ihl * 4));
18604c54 2211 tmp = (tcp->source + (tcp->dest << 16)) % 31;
88ca2d07 2212 tmp += ip_hdr(skb)->daddr % 31;
18604c54 2213 return tmp % num_qps;
508d2b5d 2214 } else
18604c54
JBT		 2215 return 0;
2216}
2217
7a291083
JBT		 2218static int ehea_start_xmit(struct sk_buff *skb, struct net_device *dev)
2219{
2220 struct ehea_port *port = netdev_priv(dev);
2221 struct ehea_swqe *swqe;
2222 unsigned long flags;
2223 u32 lkey;
2224 int swqe_index;
18604c54
JBT		 2225 struct ehea_port_res *pr;
2226
2227 pr = &port->port_res[ehea_hash_skb(skb, port->num_tx_qps)];
2228
18604c54
JBT		 2229 if (!spin_trylock(&pr->xmit_lock))
2230 return NETDEV_TX_BUSY;
2231
2232 if (pr->queue_stopped) {
2233 spin_unlock(&pr->xmit_lock);
2234 return NETDEV_TX_BUSY;
2235 }
7a291083
JBT		 2236
2237 swqe = ehea_get_swqe(pr->qp, &swqe_index);
2238 memset(swqe, 0, SWQE_HEADER_SIZE);
2239 atomic_dec(&pr->swqe_avail);
2240
2241 if (skb->len <= SWQE3_MAX_IMM) {
2242 u32 sig_iv = port->sig_comp_iv;
2243 u32 swqe_num = pr->swqe_id_counter;
2244 ehea_xmit3(skb, dev, swqe);
2245 swqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE3_TYPE)
2246 | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, swqe_num);
2247 if (pr->swqe_ll_count >= (sig_iv - 1)) {
2248 swqe->wr_id |= EHEA_BMASK_SET(EHEA_WR_ID_REFILL,
2249 sig_iv);
2250 swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
2251 pr->swqe_ll_count = 0;
2252 } else
2253 pr->swqe_ll_count += 1;
2254 } else {
2255 swqe->wr_id =
2256 EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE2_TYPE)
2257 | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, pr->swqe_id_counter)
acbddb59 2258 | EHEA_BMASK_SET(EHEA_WR_ID_REFILL, 1)
7a291083
JBT		 2259 | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, pr->sq_skba.index);
2260 pr->sq_skba.arr[pr->sq_skba.index] = skb;
2261
2262 pr->sq_skba.index++;
2263 pr->sq_skba.index &= (pr->sq_skba.len - 1);
2264
2265 lkey = pr->send_mr.lkey;
2266 ehea_xmit2(skb, dev, swqe, lkey);
acbddb59 2267 swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
7a291083
JBT		 2268 }
2269 pr->swqe_id_counter += 1;
2270
2271 if (port->vgrp && vlan_tx_tag_present(skb)) {
2272 swqe->tx_control |= EHEA_SWQE_VLAN_INSERT;
2273 swqe->vlan_tag = vlan_tx_tag_get(skb);
2274 }
2275
2276 if (netif_msg_tx_queued(port)) {
2277 ehea_info("post swqe on QP %d", pr->qp->init_attr.qp_nr);
bff0a55f 2278 ehea_dump(swqe, 512, "swqe");
7a291083
JBT		 2279 }
2280
2c69448b
JBT		 2281 if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) {
2282 netif_stop_queue(dev);
2283 swqe->tx_control |= EHEA_SWQE_PURGE;
2284 }
44c82152 2285
7a291083 2286 ehea_post_swqe(pr->qp, swqe);
7393b87c 2287 pr->tx_packets++;
7a291083
JBT		 2288
2289 if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) {
2290 spin_lock_irqsave(&pr->netif_queue, flags);
2291 if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) {
acbddb59 2292 pr->p_stats.queue_stopped++;
7a291083
JBT		 2293 netif_stop_queue(dev);
2294 pr->queue_stopped = 1;
2295 }
2296 spin_unlock_irqrestore(&pr->netif_queue, flags);
2297 }
1ae5dc34 2298 dev->trans_start = jiffies; /* NETIF_F_LLTX driver :( */
7a291083 2299 spin_unlock(&pr->xmit_lock);
2c69448b 2300
7a291083
JBT		 2301 return NETDEV_TX_OK;
2302}
2303
2304static void ehea_vlan_rx_register(struct net_device *dev,
2305 struct vlan_group *grp)
2306{
2307 struct ehea_port *port = netdev_priv(dev);
2308 struct ehea_adapter *adapter = port->adapter;
2309 struct hcp_ehea_port_cb1 *cb1;
2310 u64 hret;
2311
2312 port->vgrp = grp;
2313
3faf2693 2314 cb1 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083
JBT		 2315 if (!cb1) {
2316 ehea_error("no mem for cb1");
2317 goto out;
2318 }
2319
7a291083
JBT		 2320 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
2321 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2322 if (hret != H_SUCCESS)
2323 ehea_error("modify_ehea_port failed");
2324
3faf2693 2325 free_page((unsigned long)cb1);
7a291083
JBT		 2326out:
2327 return;
2328}
2329
2330static void ehea_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
2331{
2332 struct ehea_port *port = netdev_priv(dev);
2333 struct ehea_adapter *adapter = port->adapter;
2334 struct hcp_ehea_port_cb1 *cb1;
2335 int index;
2336 u64 hret;
2337
3faf2693 2338 cb1 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083
JBT		 2339 if (!cb1) {
2340 ehea_error("no mem for cb1");
2341 goto out;
2342 }
2343
2344 hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
2345 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2346 if (hret != H_SUCCESS) {
2347 ehea_error("query_ehea_port failed");
2348 goto out;
2349 }
2350
2351 index = (vid / 64);
dec590c1 2352 cb1->vlan_filter[index] |= ((u64)(0x8000000000000000 >> (vid & 0x3F)));
7a291083
JBT		 2353
2354 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
2355 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2356 if (hret != H_SUCCESS)
2357 ehea_error("modify_ehea_port failed");
2358out:
3faf2693 2359 free_page((unsigned long)cb1);
7a291083
JBT		 2360 return;
2361}
2362
2363static void ehea_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
2364{
2365 struct ehea_port *port = netdev_priv(dev);
2366 struct ehea_adapter *adapter = port->adapter;
2367 struct hcp_ehea_port_cb1 *cb1;
2368 int index;
2369 u64 hret;
2370
5c15bdec 2371 vlan_group_set_device(port->vgrp, vid, NULL);
7a291083 2372
3faf2693 2373 cb1 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083
JBT		 2374 if (!cb1) {
2375 ehea_error("no mem for cb1");
2376 goto out;
2377 }
2378
2379 hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
2380 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2381 if (hret != H_SUCCESS) {
2382 ehea_error("query_ehea_port failed");
2383 goto out;
2384 }
2385
2386 index = (vid / 64);
dec590c1 2387 cb1->vlan_filter[index] &= ~((u64)(0x8000000000000000 >> (vid & 0x3F)));
7a291083
JBT		 2388
2389 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
2390 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2391 if (hret != H_SUCCESS)
2392 ehea_error("modify_ehea_port failed");
2393out:
3faf2693 2394 free_page((unsigned long)cb1);
7a291083
JBT		 2395}
2396
2397int ehea_activate_qp(struct ehea_adapter *adapter, struct ehea_qp *qp)
2398{
2399 int ret = -EIO;
2400 u64 hret;
2401 u16 dummy16 = 0;
2402 u64 dummy64 = 0;
508d2b5d 2403 struct hcp_modify_qp_cb0 *cb0;
7a291083 2404
3faf2693 2405 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083
JBT		 2406 if (!cb0) {
2407 ret = -ENOMEM;
2408 goto out;
2409 }
2410
2411 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2412 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2413 if (hret != H_SUCCESS) {
2414 ehea_error("query_ehea_qp failed (1)");
2415 goto out;
2416 }
2417
2418 cb0->qp_ctl_reg = H_QP_CR_STATE_INITIALIZED;
2419 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2420 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2421 &dummy64, &dummy64, &dummy16, &dummy16);
2422 if (hret != H_SUCCESS) {
2423 ehea_error("modify_ehea_qp failed (1)");
2424 goto out;
2425 }
2426
2427 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2428 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2429 if (hret != H_SUCCESS) {
2430 ehea_error("query_ehea_qp failed (2)");
2431 goto out;
2432 }
2433
2434 cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_INITIALIZED;
2435 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2436 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2437 &dummy64, &dummy64, &dummy16, &dummy16);
2438 if (hret != H_SUCCESS) {
2439 ehea_error("modify_ehea_qp failed (2)");
2440 goto out;
2441 }
2442
2443 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2444 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2445 if (hret != H_SUCCESS) {
2446 ehea_error("query_ehea_qp failed (3)");
2447 goto out;
2448 }
2449
2450 cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_RDY2SND;
2451 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2452 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2453 &dummy64, &dummy64, &dummy16, &dummy16);
2454 if (hret != H_SUCCESS) {
2455 ehea_error("modify_ehea_qp failed (3)");
2456 goto out;
2457 }
2458
2459 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2460 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2461 if (hret != H_SUCCESS) {
2462 ehea_error("query_ehea_qp failed (4)");
2463 goto out;
2464 }
2465
2466 ret = 0;
2467out:
3faf2693 2468 free_page((unsigned long)cb0);
7a291083
JBT		 2469 return ret;
2470}
2471
2472static int ehea_port_res_setup(struct ehea_port *port, int def_qps,
2473 int add_tx_qps)
2474{
2475 int ret, i;
2476 struct port_res_cfg pr_cfg, pr_cfg_small_rx;
2477 enum ehea_eq_type eq_type = EHEA_EQ;
2478
2479 port->qp_eq = ehea_create_eq(port->adapter, eq_type,
2480 EHEA_MAX_ENTRIES_EQ, 1);
2481 if (!port->qp_eq) {
2482 ret = -EINVAL;
2483 ehea_error("ehea_create_eq failed (qp_eq)");
2484 goto out_kill_eq;
2485 }
2486
2487 pr_cfg.max_entries_rcq = rq1_entries + rq2_entries + rq3_entries;
18604c54 2488 pr_cfg.max_entries_scq = sq_entries * 2;
7a291083
JBT		 2489 pr_cfg.max_entries_sq = sq_entries;
2490 pr_cfg.max_entries_rq1 = rq1_entries;
2491 pr_cfg.max_entries_rq2 = rq2_entries;
2492 pr_cfg.max_entries_rq3 = rq3_entries;
2493
2494 pr_cfg_small_rx.max_entries_rcq = 1;
2495 pr_cfg_small_rx.max_entries_scq = sq_entries;
2496 pr_cfg_small_rx.max_entries_sq = sq_entries;
2497 pr_cfg_small_rx.max_entries_rq1 = 1;
2498 pr_cfg_small_rx.max_entries_rq2 = 1;
2499 pr_cfg_small_rx.max_entries_rq3 = 1;
2500
2501 for (i = 0; i < def_qps; i++) {
2502 ret = ehea_init_port_res(port, &port->port_res[i], &pr_cfg, i);
2503 if (ret)
2504 goto out_clean_pr;
2505 }
2506 for (i = def_qps; i < def_qps + add_tx_qps; i++) {
2507 ret = ehea_init_port_res(port, &port->port_res[i],
2508 &pr_cfg_small_rx, i);
2509 if (ret)
2510 goto out_clean_pr;
2511 }
2512
2513 return 0;
2514
2515out_clean_pr:
2516 while (--i >= 0)
2517 ehea_clean_portres(port, &port->port_res[i]);
2518
2519out_kill_eq:
2520 ehea_destroy_eq(port->qp_eq);
2521 return ret;
2522}
2523
2524static int ehea_clean_all_portres(struct ehea_port *port)
2525{
2526 int ret = 0;
2527 int i;
2528
508d2b5d 2529 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
7a291083
JBT		 2530 ret |= ehea_clean_portres(port, &port->port_res[i]);
2531
2532 ret |= ehea_destroy_eq(port->qp_eq);
2533
2534 return ret;
2535}
2536
35cf2e2e 2537static void ehea_remove_adapter_mr(struct ehea_adapter *adapter)
1211bb6d 2538{
35cf2e2e
TK		 2539 if (adapter->active_ports)
2540 return;
1211bb6d
TK		 2541
2542 ehea_rem_mr(&adapter->mr);
2543}
2544
35cf2e2e 2545static int ehea_add_adapter_mr(struct ehea_adapter *adapter)
1211bb6d 2546{
35cf2e2e
TK		 2547 if (adapter->active_ports)
2548 return 0;
1211bb6d
TK		 2549
2550 return ehea_reg_kernel_mr(adapter, &adapter->mr);
2551}
2552
7a291083
JBT		 2553static int ehea_up(struct net_device *dev)
2554{
2555 int ret, i;
2556 struct ehea_port *port = netdev_priv(dev);
7a291083
JBT		 2557
2558 if (port->state == EHEA_PORT_UP)
2559 return 0;
2560
2561 ret = ehea_port_res_setup(port, port->num_def_qps,
2562 port->num_add_tx_qps);
2563 if (ret) {
2564 ehea_error("port_res_failed");
2565 goto out;
2566 }
2567
2568 /* Set default QP for this port */
2569 ret = ehea_configure_port(port);
2570 if (ret) {
2571 ehea_error("ehea_configure_port failed. ret:%d", ret);
2572 goto out_clean_pr;
2573 }
2574
7a291083
JBT		 2575 ret = ehea_reg_interrupts(dev);
2576 if (ret) {
f9e29228
TK		 2577 ehea_error("reg_interrupts failed. ret:%d", ret);
2578 goto out_clean_pr;
7a291083
JBT		 2579 }
2580
508d2b5d 2581 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
7a291083
JBT		 2582 ret = ehea_activate_qp(port->adapter, port->port_res[i].qp);
2583 if (ret) {
2584 ehea_error("activate_qp failed");
2585 goto out_free_irqs;
2586 }
2587 }
2588
508d2b5d 2589 for (i = 0; i < port->num_def_qps; i++) {
7a291083
JBT		 2590 ret = ehea_fill_port_res(&port->port_res[i]);
2591 if (ret) {
2592 ehea_error("out_free_irqs");
2593 goto out_free_irqs;
2594 }
2595 }
2596
21eee2dd
TK		 2597 ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
2598 if (ret) {
2599 ret = -EIO;
2600 goto out_free_irqs;
2601 }
2602
7a291083 2603 port->state = EHEA_PORT_UP;
21eee2dd
TK		 2604
2605 ret = 0;
7a291083
JBT		 2606 goto out;
2607
2608out_free_irqs:
2609 ehea_free_interrupts(dev);
2610
7a291083
JBT		 2611out_clean_pr:
2612 ehea_clean_all_portres(port);
2613out:
44c82152
TK		 2614 if (ret)
2615 ehea_info("Failed starting %s. ret=%i", dev->name, ret);
2616
21eee2dd 2617 ehea_update_bcmc_registrations();
21eee2dd 2618 ehea_update_firmware_handles();
21eee2dd 2619
7a291083
JBT		 2620 return ret;
2621}
2622
bea3348e
SH		 2623static void port_napi_disable(struct ehea_port *port)
2624{
2625 int i;
2626
0173b793 2627 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
bea3348e
SH		 2628 napi_disable(&port->port_res[i].napi);
2629}
2630
2631static void port_napi_enable(struct ehea_port *port)
2632{
2633 int i;
2634
0173b793 2635 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
bea3348e
SH		 2636 napi_enable(&port->port_res[i].napi);
2637}
2638
7a291083
JBT		 2639static int ehea_open(struct net_device *dev)
2640{
2641 int ret;
2642 struct ehea_port *port = netdev_priv(dev);
2643
a5af6ad3 2644 mutex_lock(&port->port_lock);
7a291083
JBT		 2645
2646 if (netif_msg_ifup(port))
2647 ehea_info("enabling port %s", dev->name);
2648
2649 ret = ehea_up(dev);
bea3348e
SH		 2650 if (!ret) {
2651 port_napi_enable(port);
7a291083 2652 netif_start_queue(dev);
bea3348e 2653 }
7a291083 2654
a5af6ad3 2655 mutex_unlock(&port->port_lock);
7a291083
JBT		 2656
2657 return ret;
2658}
2659
2660static int ehea_down(struct net_device *dev)
2661{
bea3348e 2662 int ret;
7a291083
JBT		 2663 struct ehea_port *port = netdev_priv(dev);
2664
2665 if (port->state == EHEA_PORT_DOWN)
2666 return 0;
2667
2668 ehea_drop_multicast_list(dev);
21eee2dd
TK		 2669 ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
2670
7a291083
JBT		 2671 ehea_free_interrupts(dev);
2672
7a291083 2673 port->state = EHEA_PORT_DOWN;
44c82152 2674
21eee2dd 2675 ehea_update_bcmc_registrations();
21eee2dd 2676
44c82152
TK		 2677 ret = ehea_clean_all_portres(port);
2678 if (ret)
2679 ehea_info("Failed freeing resources for %s. ret=%i",
2680 dev->name, ret);
2681
21eee2dd 2682 ehea_update_firmware_handles();
21eee2dd 2683
7a291083
JBT		 2684 return ret;
2685}
2686
2687static int ehea_stop(struct net_device *dev)
2688{
2689 int ret;
2690 struct ehea_port *port = netdev_priv(dev);
2691
2692 if (netif_msg_ifdown(port))
2693 ehea_info("disabling port %s", dev->name);
2694
2f69ae01 2695 set_bit(__EHEA_DISABLE_PORT_RESET, &port->flags);
4bb073c0 2696 cancel_work_sync(&port->reset_task);
a5af6ad3 2697 mutex_lock(&port->port_lock);
7a291083 2698 netif_stop_queue(dev);
0173b793 2699 port_napi_disable(port);
7a291083 2700 ret = ehea_down(dev);
a5af6ad3 2701 mutex_unlock(&port->port_lock);
2f69ae01 2702 clear_bit(__EHEA_DISABLE_PORT_RESET, &port->flags);
7a291083
JBT		 2703 return ret;
2704}
2705
22559c5d 2706static void ehea_purge_sq(struct ehea_qp *orig_qp)
2c69448b
JBT		 2707{
2708 struct ehea_qp qp = *orig_qp;
2709 struct ehea_qp_init_attr *init_attr = &qp.init_attr;
2710 struct ehea_swqe *swqe;
2711 int wqe_index;
2712 int i;
2713
2714 for (i = 0; i < init_attr->act_nr_send_wqes; i++) {
2715 swqe = ehea_get_swqe(&qp, &wqe_index);
2716 swqe->tx_control |= EHEA_SWQE_PURGE;
2717 }
2718}
2719
22559c5d 2720static void ehea_flush_sq(struct ehea_port *port)
44fb3126
TK		 2721{
2722 int i;
2723
2724 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
2725 struct ehea_port_res *pr = &port->port_res[i];
2726 int swqe_max = pr->sq_skba_size - 2 - pr->swqe_ll_count;
2727 int k = 0;
2728 while (atomic_read(&pr->swqe_avail) < swqe_max) {
2729 msleep(5);
2928db4c
AD		 2730 if (++k == 20) {
2731 ehea_error("WARNING: sq not flushed completely");
44fb3126 2732 break;
2928db4c 2733 }
44fb3126
TK		 2734 }
2735 }
2736}
2737
2c69448b
JBT		 2738int ehea_stop_qps(struct net_device *dev)
2739{
2740 struct ehea_port *port = netdev_priv(dev);
2741 struct ehea_adapter *adapter = port->adapter;
508d2b5d 2742 struct hcp_modify_qp_cb0 *cb0;
2c69448b
JBT		 2743 int ret = -EIO;
2744 int dret;
2745 int i;
2746 u64 hret;
2747 u64 dummy64 = 0;
2748 u16 dummy16 = 0;
2749
3faf2693 2750 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
2c69448b
JBT		 2751 if (!cb0) {
2752 ret = -ENOMEM;
2753 goto out;
2754 }
2755
2756 for (i = 0; i < (port->num_def_qps + port->num_add_tx_qps); i++) {
2757 struct ehea_port_res *pr = &port->port_res[i];
2758 struct ehea_qp *qp = pr->qp;
2759
2760 /* Purge send queue */
2761 ehea_purge_sq(qp);
2762
2763 /* Disable queue pair */
2764 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2765 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2766 cb0);
2767 if (hret != H_SUCCESS) {
2768 ehea_error("query_ehea_qp failed (1)");
2769 goto out;
2770 }
2771
2772 cb0->qp_ctl_reg = (cb0->qp_ctl_reg & H_QP_CR_RES_STATE) << 8;
2773 cb0->qp_ctl_reg &= ~H_QP_CR_ENABLED;
2774
2775 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2776 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG,
2777 1), cb0, &dummy64,
2778 &dummy64, &dummy16, &dummy16);
2779 if (hret != H_SUCCESS) {
2780 ehea_error("modify_ehea_qp failed (1)");
2781 goto out;
2782 }
2783
2784 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2785 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2786 cb0);
2787 if (hret != H_SUCCESS) {
2788 ehea_error("query_ehea_qp failed (2)");
2789 goto out;
2790 }
2791
2792 /* deregister shared memory regions */
2793 dret = ehea_rem_smrs(pr);
2794 if (dret) {
2795 ehea_error("unreg shared memory region failed");
2796 goto out;
2797 }
2798 }
2799
2800 ret = 0;
2801out:
3faf2693 2802 free_page((unsigned long)cb0);
2c69448b
JBT		 2803
2804 return ret;
2805}
2806
508d2b5d 2807void ehea_update_rqs(struct ehea_qp *orig_qp, struct ehea_port_res *pr)
2c69448b
JBT		 2808{
2809 struct ehea_qp qp = *orig_qp;
2810 struct ehea_qp_init_attr *init_attr = &qp.init_attr;
2811 struct ehea_rwqe *rwqe;
2812 struct sk_buff **skba_rq2 = pr->rq2_skba.arr;
2813 struct sk_buff **skba_rq3 = pr->rq3_skba.arr;
2814 struct sk_buff *skb;
2815 u32 lkey = pr->recv_mr.lkey;
2816
2817
2818 int i;
2819 int index;
2820
2821 for (i = 0; i < init_attr->act_nr_rwqes_rq2 + 1; i++) {
2822 rwqe = ehea_get_next_rwqe(&qp, 2);
2823 rwqe->sg_list[0].l_key = lkey;
2824 index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, rwqe->wr_id);
2825 skb = skba_rq2[index];
2826 if (skb)
2827 rwqe->sg_list[0].vaddr = ehea_map_vaddr(skb->data);
2828 }
2829
2830 for (i = 0; i < init_attr->act_nr_rwqes_rq3 + 1; i++) {
2831 rwqe = ehea_get_next_rwqe(&qp, 3);
2832 rwqe->sg_list[0].l_key = lkey;
2833 index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, rwqe->wr_id);
2834 skb = skba_rq3[index];
2835 if (skb)
2836 rwqe->sg_list[0].vaddr = ehea_map_vaddr(skb->data);
2837 }
2838}
2839
2840int ehea_restart_qps(struct net_device *dev)
2841{
2842 struct ehea_port *port = netdev_priv(dev);
2843 struct ehea_adapter *adapter = port->adapter;
2844 int ret = 0;
2845 int i;
2846
508d2b5d 2847 struct hcp_modify_qp_cb0 *cb0;
2c69448b
JBT		 2848 u64 hret;
2849 u64 dummy64 = 0;
2850 u16 dummy16 = 0;
2851
3faf2693 2852 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
2c69448b
JBT		 2853 if (!cb0) {
2854 ret = -ENOMEM;
2855 goto out;
2856 }
2857
2858 for (i = 0; i < (port->num_def_qps + port->num_add_tx_qps); i++) {
2859 struct ehea_port_res *pr = &port->port_res[i];
2860 struct ehea_qp *qp = pr->qp;
2861
2862 ret = ehea_gen_smrs(pr);
2863 if (ret) {
2864 ehea_error("creation of shared memory regions failed");
2865 goto out;
2866 }
2867
2868 ehea_update_rqs(qp, pr);
2869
2870 /* Enable queue pair */
2871 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2872 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2873 cb0);
2874 if (hret != H_SUCCESS) {
2875 ehea_error("query_ehea_qp failed (1)");
2876 goto out;
2877 }
2878
2879 cb0->qp_ctl_reg = (cb0->qp_ctl_reg & H_QP_CR_RES_STATE) << 8;
2880 cb0->qp_ctl_reg |= H_QP_CR_ENABLED;
2881
2882 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2883 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG,
2884 1), cb0, &dummy64,
2885 &dummy64, &dummy16, &dummy16);
2886 if (hret != H_SUCCESS) {
2887 ehea_error("modify_ehea_qp failed (1)");
2888 goto out;
2889 }
2890
2891 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2892 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2893 cb0);
2894 if (hret != H_SUCCESS) {
2895 ehea_error("query_ehea_qp failed (2)");
2896 goto out;
2897 }
2898
2899 /* refill entire queue */
2900 ehea_refill_rq1(pr, pr->rq1_skba.index, 0);
2901 ehea_refill_rq2(pr, 0);
2902 ehea_refill_rq3(pr, 0);
2903 }
2904out:
3faf2693 2905 free_page((unsigned long)cb0);
2c69448b
JBT		 2906
2907 return ret;
2908}
2909
c4028958 2910static void ehea_reset_port(struct work_struct *work)
7a291083
JBT		 2911{
2912 int ret;
c4028958
DH		 2913 struct ehea_port *port =
2914 container_of(work, struct ehea_port, reset_task);
2915 struct net_device *dev = port->netdev;
7a291083 2916
099473c1 2917 mutex_lock(&dlpar_mem_lock);
7a291083 2918 port->resets++;
a5af6ad3 2919 mutex_lock(&port->port_lock);
7a291083 2920 netif_stop_queue(dev);
bea3348e
SH		 2921
2922 port_napi_disable(port);
7a291083 2923
44c82152 2924 ehea_down(dev);
7a291083
JBT		 2925
2926 ret = ehea_up(dev);
44c82152 2927 if (ret)
7a291083 2928 goto out;
7a291083 2929
2c69448b
JBT		 2930 ehea_set_multicast_list(dev);
2931
7a291083
JBT		 2932 if (netif_msg_timer(port))
2933 ehea_info("Device %s resetted successfully", dev->name);
2934
bea3348e
SH		 2935 port_napi_enable(port);
2936
7a291083
JBT		 2937 netif_wake_queue(dev);
2938out:
a5af6ad3 2939 mutex_unlock(&port->port_lock);
099473c1 2940 mutex_unlock(&dlpar_mem_lock);
7a291083
JBT		 2941}
2942
44c82152
TK		 2943static void ehea_rereg_mrs(struct work_struct *work)
2944{
2945 int ret, i;
2946 struct ehea_adapter *adapter;
2947
d4f12daf 2948 ehea_info("LPAR memory changed - re-initializing driver");
44c82152
TK		 2949
2950 list_for_each_entry(adapter, &adapter_list, list)
2951 if (adapter->active_ports) {
2952 /* Shutdown all ports */
2953 for (i = 0; i < EHEA_MAX_PORTS; i++) {
2954 struct ehea_port *port = adapter->port[i];
a5af6ad3 2955 struct net_device *dev;
44c82152 2956
a5af6ad3
DW		 2957 if (!port)
2958 continue;
44c82152 2959
a5af6ad3
DW		 2960 dev = port->netdev;
2961
2962 if (dev->flags & IFF_UP) {
2963 mutex_lock(&port->port_lock);
2964 netif_stop_queue(dev);
df39e8ba 2965 ehea_flush_sq(port);
a5af6ad3
DW		 2966 ret = ehea_stop_qps(dev);
2967 if (ret) {
2968 mutex_unlock(&port->port_lock);
2969 goto out;
44c82152 2970 }
a5af6ad3
DW		 2971 port_napi_disable(port);
2972 mutex_unlock(&port->port_lock);
44c82152 2973 }
2928db4c 2974 reset_sq_restart_flag(port);
44c82152
TK		 2975 }
2976
2977 /* Unregister old memory region */
2978 ret = ehea_rem_mr(&adapter->mr);
2979 if (ret) {
2980 ehea_error("unregister MR failed - driver"
2981 " inoperable!");
2982 goto out;
2983 }
2984 }
2985
44c82152
TK		 2986 clear_bit(__EHEA_STOP_XFER, &ehea_driver_flags);
2987
2988 list_for_each_entry(adapter, &adapter_list, list)
2989 if (adapter->active_ports) {
2990 /* Register new memory region */
2991 ret = ehea_reg_kernel_mr(adapter, &adapter->mr);
2992 if (ret) {
2993 ehea_error("register MR failed - driver"
2994 " inoperable!");
2995 goto out;
2996 }
2997
2998 /* Restart all ports */
2999 for (i = 0; i < EHEA_MAX_PORTS; i++) {
3000 struct ehea_port *port = adapter->port[i];
3001
3002 if (port) {
3003 struct net_device *dev = port->netdev;
3004
3005 if (dev->flags & IFF_UP) {
a5af6ad3 3006 mutex_lock(&port->port_lock);
2c69448b
JBT		 3007 port_napi_enable(port);
3008 ret = ehea_restart_qps(dev);
2928db4c 3009 check_sqs(port);
2c69448b 3010 if (!ret)
44c82152 3011 netif_wake_queue(dev);
a5af6ad3 3012 mutex_unlock(&port->port_lock);
44c82152
TK		 3013 }
3014 }
3015 }
3016 }
68905eb4 3017 ehea_info("re-initializing driver complete");
44c82152
TK		 3018out:
3019 return;
3020}
3021
7a291083
JBT		 3022static void ehea_tx_watchdog(struct net_device *dev)
3023{
3024 struct ehea_port *port = netdev_priv(dev);
3025
2c69448b
JBT		 3026 if (netif_carrier_ok(dev) &&
3027 !test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))
2f69ae01 3028 ehea_schedule_port_reset(port);
7a291083
JBT		 3029}
3030
3031int ehea_sense_adapter_attr(struct ehea_adapter *adapter)
3032{
3033 struct hcp_query_ehea *cb;
3034 u64 hret;
3035 int ret;
3036
3faf2693 3037 cb = (void *)get_zeroed_page(GFP_KERNEL);
7a291083
JBT		 3038 if (!cb) {
3039 ret = -ENOMEM;
3040 goto out;
3041 }
3042
3043 hret = ehea_h_query_ehea(adapter->handle, cb);
3044
3045 if (hret != H_SUCCESS) {
3046 ret = -EIO;
3047 goto out_herr;
3048 }
3049
7a291083
JBT		 3050 adapter->max_mc_mac = cb->max_mc_mac - 1;
3051 ret = 0;
3052
3053out_herr:
3faf2693 3054 free_page((unsigned long)cb);
7a291083
JBT		 3055out:
3056 return ret;
3057}
3058
1acf2318 3059int ehea_get_jumboframe_status(struct ehea_port *port, int *jumbo)
7a291083 3060{
7a291083 3061 struct hcp_ehea_port_cb4 *cb4;
1acf2318
JBT		 3062 u64 hret;
3063 int ret = 0;
7a291083 3064
1acf2318 3065 *jumbo = 0;
7a291083 3066
1acf2318 3067 /* (Try to) enable *jumbo frames */
3faf2693 3068 cb4 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083
JBT		 3069 if (!cb4) {
3070 ehea_error("no mem for cb4");
1acf2318
JBT		 3071 ret = -ENOMEM;
3072 goto out;
7a291083 3073 } else {
1acf2318 3074 hret = ehea_h_query_ehea_port(port->adapter->handle,
9c750b7d
TK		 3075 port->logical_port_id,
3076 H_PORT_CB4,
3077 H_PORT_CB4_JUMBO, cb4);
9c750b7d
TK		 3078 if (hret == H_SUCCESS) {
3079 if (cb4->jumbo_frame)
1acf2318 3080 *jumbo = 1;
9c750b7d
TK		 3081 else {
3082 cb4->jumbo_frame = 1;
1acf2318
JBT		 3083 hret = ehea_h_modify_ehea_port(port->adapter->
3084 handle,
9c750b7d 3085 port->
1acf2318 3086 logical_port_id,
9c750b7d
TK		 3087 H_PORT_CB4,
3088 H_PORT_CB4_JUMBO,
3089 cb4);
3090 if (hret == H_SUCCESS)
1acf2318 3091 *jumbo = 1;
9c750b7d 3092 }
1acf2318
JBT		 3093 } else
3094 ret = -EINVAL;
3095
3faf2693 3096 free_page((unsigned long)cb4);
7a291083 3097 }
1acf2318
JBT		 3098out:
3099 return ret;
3100}
3101
3102static ssize_t ehea_show_port_id(struct device *dev,
3103 struct device_attribute *attr, char *buf)
3104{
3105 struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev);
a8e34fda 3106 return sprintf(buf, "%d", port->logical_port_id);
1acf2318
JBT		 3107}
3108
3109static DEVICE_ATTR(log_port_id, S_IRUSR | S_IRGRP | S_IROTH, ehea_show_port_id,
3110 NULL);
3111
3112static void __devinit logical_port_release(struct device *dev)
3113{
3114 struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev);
61c7a080 3115 of_node_put(port->ofdev.dev.of_node);
1acf2318
JBT		 3116}
3117
3118static struct device *ehea_register_port(struct ehea_port *port,
3119 struct device_node *dn)
3120{
3121 int ret;
3122
61c7a080 3123 port->ofdev.dev.of_node = of_node_get(dn);
6b08f3ae 3124 port->ofdev.dev.parent = &port->adapter->ofdev->dev;
d1dea38d 3125 port->ofdev.dev.bus = &ibmebus_bus_type;
1acf2318 3126
db1d7bf7 3127 dev_set_name(&port->ofdev.dev, "port%d", port_name_cnt++);
1acf2318
JBT		 3128 port->ofdev.dev.release = logical_port_release;
3129
3130 ret = of_device_register(&port->ofdev);
3131 if (ret) {
3132 ehea_error("failed to register device. ret=%d", ret);
3133 goto out;
3134 }
3135
3136 ret = device_create_file(&port->ofdev.dev, &dev_attr_log_port_id);
d1d25aab 3137 if (ret) {
1acf2318
JBT		 3138 ehea_error("failed to register attributes, ret=%d", ret);
3139 goto out_unreg_of_dev;
3140 }
e542aa6b 3141
1acf2318
JBT		 3142 return &port->ofdev.dev;
3143
3144out_unreg_of_dev:
3145 of_device_unregister(&port->ofdev);
3146out:
3147 return NULL;
3148}
3149
3150static void ehea_unregister_port(struct ehea_port *port)
3151{
3152 device_remove_file(&port->ofdev.dev, &dev_attr_log_port_id);
3153 of_device_unregister(&port->ofdev);
3154}
3155
086c1b2c
TK		 3156static const struct net_device_ops ehea_netdev_ops = {
3157 .ndo_open = ehea_open,
3158 .ndo_stop = ehea_stop,
3159 .ndo_start_xmit = ehea_start_xmit,
3160#ifdef CONFIG_NET_POLL_CONTROLLER
3161 .ndo_poll_controller = ehea_netpoll,
3162#endif
3163 .ndo_get_stats = ehea_get_stats,
3164 .ndo_set_mac_address = ehea_set_mac_addr,
240c102d 3165 .ndo_validate_addr = eth_validate_addr,
086c1b2c
TK		 3166 .ndo_set_multicast_list = ehea_set_multicast_list,
3167 .ndo_change_mtu = ehea_change_mtu,
3168 .ndo_vlan_rx_register = ehea_vlan_rx_register,
3169 .ndo_vlan_rx_add_vid = ehea_vlan_rx_add_vid,
32e8f9a8
AB		 3170 .ndo_vlan_rx_kill_vid = ehea_vlan_rx_kill_vid,
3171 .ndo_tx_timeout = ehea_tx_watchdog,
086c1b2c
TK		 3172};
3173
1acf2318
JBT		 3174struct ehea_port *ehea_setup_single_port(struct ehea_adapter *adapter,
3175 u32 logical_port_id,
3176 struct device_node *dn)
3177{
3178 int ret;
3179 struct net_device *dev;
3180 struct ehea_port *port;
3181 struct device *port_dev;
3182 int jumbo;
3183
3184 /* allocate memory for the port structures */
3185 dev = alloc_etherdev(sizeof(struct ehea_port));
3186
3187 if (!dev) {
3188 ehea_error("no mem for net_device");
3189 ret = -ENOMEM;
3190 goto out_err;
3191 }
3192
3193 port = netdev_priv(dev);
3194
a5af6ad3 3195 mutex_init(&port->port_lock);
1acf2318
JBT		 3196 port->state = EHEA_PORT_DOWN;
3197 port->sig_comp_iv = sq_entries / 10;
3198
3199 port->adapter = adapter;
3200 port->netdev = dev;
3201 port->logical_port_id = logical_port_id;
3202
3203 port->msg_enable = netif_msg_init(msg_level, EHEA_MSG_DEFAULT);
3204
3205 port->mc_list = kzalloc(sizeof(struct ehea_mc_list), GFP_KERNEL);
3206 if (!port->mc_list) {
3207 ret = -ENOMEM;
3208 goto out_free_ethdev;
3209 }
3210
3211 INIT_LIST_HEAD(&port->mc_list->list);
3212
3213 ret = ehea_sense_port_attr(port);
3214 if (ret)
3215 goto out_free_mc_list;
3216
3217 port_dev = ehea_register_port(port, dn);
3218 if (!port_dev)
3219 goto out_free_mc_list;
3220
3221 SET_NETDEV_DEV(dev, port_dev);
7a291083
JBT		 3222
3223 /* initialize net_device structure */
7a291083
JBT		 3224 memcpy(dev->dev_addr, &port->mac_addr, ETH_ALEN);
3225
086c1b2c
TK		 3226 dev->netdev_ops = &ehea_netdev_ops;
3227 ehea_set_ethtool_ops(dev);
3228
7a291083 3229 dev->features = NETIF_F_SG | NETIF_F_FRAGLIST | NETIF_F_TSO
dc01c447 3230 | NETIF_F_HIGHDMA | NETIF_F_IP_CSUM | NETIF_F_HW_VLAN_TX
7a291083
JBT		 3231 | NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_FILTER
3232 | NETIF_F_LLTX;
7a291083
JBT		 3233 dev->watchdog_timeo = EHEA_WATCH_DOG_TIMEOUT;
3234
c4028958 3235 INIT_WORK(&port->reset_task, ehea_reset_port);
7a291083
JBT		 3236
3237 ret = register_netdev(dev);
3238 if (ret) {
3239 ehea_error("register_netdev failed. ret=%d", ret);
21eee2dd 3240 goto out_unreg_port;
7a291083
JBT		 3241 }
3242
d4dc4ec9
JBT		 3243 port->lro_max_aggr = lro_max_aggr;
3244
1acf2318 3245 ret = ehea_get_jumboframe_status(port, &jumbo);
e542aa6b 3246 if (ret)
1acf2318
JBT		 3247 ehea_error("failed determining jumbo frame status for %s",
3248 port->netdev->name);
3249
9c750b7d
TK		 3250 ehea_info("%s: Jumbo frames are %sabled", dev->name,
3251 jumbo == 1 ? "en" : "dis");
3252
44c82152
TK		 3253 adapter->active_ports++;
3254
1acf2318 3255 return port;
7a291083 3256
1acf2318
JBT		 3257out_unreg_port:
3258 ehea_unregister_port(port);
3259
3260out_free_mc_list:
7a291083 3261 kfree(port->mc_list);
1acf2318
JBT		 3262
3263out_free_ethdev:
3264 free_netdev(dev);
3265
3266out_err:
3267 ehea_error("setting up logical port with id=%d failed, ret=%d",
3268 logical_port_id, ret);
3269 return NULL;
3270}
3271
3272static void ehea_shutdown_single_port(struct ehea_port *port)
3273{
7fb1c2ac 3274 struct ehea_adapter *adapter = port->adapter;
1acf2318
JBT		 3275 unregister_netdev(port->netdev);
3276 ehea_unregister_port(port);
3277 kfree(port->mc_list);
3278 free_netdev(port->netdev);
7fb1c2ac 3279 adapter->active_ports--;
7a291083
JBT		 3280}
3281
3282static int ehea_setup_ports(struct ehea_adapter *adapter)
3283{
1acf2318
JBT		 3284 struct device_node *lhea_dn;
3285 struct device_node *eth_dn = NULL;
d1d25aab 3286
9f9a3b8a 3287 const u32 *dn_log_port_id;
1acf2318
JBT		 3288 int i = 0;
3289
61c7a080 3290 lhea_dn = adapter->ofdev->dev.of_node;
1eef4e04 3291 while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) {
e542aa6b 3292
40cd3a45 3293 dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no",
d1d25aab 3294 NULL);
1acf2318
JBT		 3295 if (!dn_log_port_id) {
3296 ehea_error("bad device node: eth_dn name=%s",
3297 eth_dn->full_name);
3298 continue;
3299 }
7a291083 3300
1211bb6d
TK		 3301 if (ehea_add_adapter_mr(adapter)) {
3302 ehea_error("creating MR failed");
3303 of_node_put(eth_dn);
3304 return -EIO;
3305 }
3306
1acf2318
JBT		 3307 adapter->port[i] = ehea_setup_single_port(adapter,
3308 *dn_log_port_id,
3309 eth_dn);
7a291083 3310 if (adapter->port[i])
1acf2318 3311 ehea_info("%s -> logical port id #%d",
e542aa6b 3312 adapter->port[i]->netdev->name,
1acf2318 3313 *dn_log_port_id);
1211bb6d
TK		 3314 else
3315 ehea_remove_adapter_mr(adapter);
3316
1acf2318 3317 i++;
ee289b64 3318 }
1211bb6d 3319 return 0;
1acf2318
JBT		 3320}
3321
e542aa6b
JBT		 3322static struct device_node *ehea_get_eth_dn(struct ehea_adapter *adapter,
3323 u32 logical_port_id)
1acf2318
JBT		 3324{
3325 struct device_node *lhea_dn;
3326 struct device_node *eth_dn = NULL;
9f9a3b8a 3327 const u32 *dn_log_port_id;
1acf2318 3328
61c7a080 3329 lhea_dn = adapter->ofdev->dev.of_node;
1eef4e04 3330 while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) {
e542aa6b 3331
40cd3a45 3332 dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no",
d1d25aab 3333 NULL);
1acf2318
JBT		 3334 if (dn_log_port_id)
3335 if (*dn_log_port_id == logical_port_id)
3336 return eth_dn;
ee289b64 3337 }
1acf2318
JBT		 3338
3339 return NULL;
3340}
3341
3342static ssize_t ehea_probe_port(struct device *dev,
3343 struct device_attribute *attr,
3344 const char *buf, size_t count)
3345{
c7ae011d 3346 struct ehea_adapter *adapter = dev_get_drvdata(dev);
1acf2318
JBT		 3347 struct ehea_port *port;
3348 struct device_node *eth_dn = NULL;
3349 int i;
3350
3351 u32 logical_port_id;
3352
a8e34fda 3353 sscanf(buf, "%d", &logical_port_id);
1acf2318
JBT		 3354
3355 port = ehea_get_port(adapter, logical_port_id);
3356
3357 if (port) {
3358 ehea_info("adding port with logical port id=%d failed. port "
3359 "already configured as %s.", logical_port_id,
3360 port->netdev->name);
3361 return -EINVAL;
7a291083 3362 }
e542aa6b 3363
1acf2318 3364 eth_dn = ehea_get_eth_dn(adapter, logical_port_id);
7a291083 3365
1acf2318
JBT		 3366 if (!eth_dn) {
3367 ehea_info("no logical port with id %d found", logical_port_id);
3368 return -EINVAL;
3369 }
e542aa6b 3370
1211bb6d
TK		 3371 if (ehea_add_adapter_mr(adapter)) {
3372 ehea_error("creating MR failed");
3373 return -EIO;
3374 }
3375
1acf2318 3376 port = ehea_setup_single_port(adapter, logical_port_id, eth_dn);
7a291083 3377
1eef4e04
JBT		 3378 of_node_put(eth_dn);
3379
1acf2318 3380 if (port) {
508d2b5d 3381 for (i = 0; i < EHEA_MAX_PORTS; i++)
1acf2318
JBT		 3382 if (!adapter->port[i]) {
3383 adapter->port[i] = port;
3384 break;
3385 }
7a291083 3386
1acf2318
JBT		 3387 ehea_info("added %s (logical port id=%d)", port->netdev->name,
3388 logical_port_id);
1211bb6d
TK		 3389 } else {
3390 ehea_remove_adapter_mr(adapter);
e542aa6b 3391 return -EIO;
1211bb6d 3392 }
7a291083 3393
1acf2318
JBT		 3394 return (ssize_t) count;
3395}
3396
3397static ssize_t ehea_remove_port(struct device *dev,
3398 struct device_attribute *attr,
3399 const char *buf, size_t count)
3400{
c7ae011d 3401 struct ehea_adapter *adapter = dev_get_drvdata(dev);
1acf2318
JBT		 3402 struct ehea_port *port;
3403 int i;
3404 u32 logical_port_id;
3405
a8e34fda 3406 sscanf(buf, "%d", &logical_port_id);
1acf2318
JBT		 3407
3408 port = ehea_get_port(adapter, logical_port_id);
3409
3410 if (port) {
3411 ehea_info("removed %s (logical port id=%d)", port->netdev->name,
3412 logical_port_id);
3413
3414 ehea_shutdown_single_port(port);
3415
508d2b5d 3416 for (i = 0; i < EHEA_MAX_PORTS; i++)
1acf2318
JBT		 3417 if (adapter->port[i] == port) {
3418 adapter->port[i] = NULL;
3419 break;
3420 }
3421 } else {
3422 ehea_error("removing port with logical port id=%d failed. port "
3423 "not configured.", logical_port_id);
3424 return -EINVAL;
3425 }
3426
1211bb6d
TK		 3427 ehea_remove_adapter_mr(adapter);
3428
1acf2318
JBT		 3429 return (ssize_t) count;
3430}
3431
3432static DEVICE_ATTR(probe_port, S_IWUSR, NULL, ehea_probe_port);
3433static DEVICE_ATTR(remove_port, S_IWUSR, NULL, ehea_remove_port);
3434
2dc11581 3435int ehea_create_device_sysfs(struct platform_device *dev)
1acf2318 3436{
6b08f3ae 3437 int ret = device_create_file(&dev->dev, &dev_attr_probe_port);
1acf2318
JBT		 3438 if (ret)
3439 goto out;
3440
6b08f3ae 3441 ret = device_create_file(&dev->dev, &dev_attr_remove_port);
1acf2318 3442out:
7a291083
JBT		 3443 return ret;
3444}
3445
2dc11581 3446void ehea_remove_device_sysfs(struct platform_device *dev)
1acf2318 3447{
6b08f3ae
JF		 3448 device_remove_file(&dev->dev, &dev_attr_probe_port);
3449 device_remove_file(&dev->dev, &dev_attr_remove_port);
1acf2318
JBT		 3450}
3451
2dc11581 3452static int __devinit ehea_probe_adapter(struct platform_device *dev,
1acf2318 3453 const struct of_device_id *id)
7a291083
JBT		 3454{
3455 struct ehea_adapter *adapter;
9f9a3b8a 3456 const u64 *adapter_handle;
7a291083
JBT		 3457 int ret;
3458
61c7a080 3459 if (!dev || !dev->dev.of_node) {
1eef4e04
JBT		 3460 ehea_error("Invalid ibmebus device probed");
3461 return -EINVAL;
3462 }
3463
7a291083
JBT		 3464 adapter = kzalloc(sizeof(*adapter), GFP_KERNEL);
3465 if (!adapter) {
3466 ret = -ENOMEM;
6b08f3ae 3467 dev_err(&dev->dev, "no mem for ehea_adapter\n");
7a291083
JBT		 3468 goto out;
3469 }
3470
44c82152
TK		 3471 list_add(&adapter->list, &adapter_list);
3472
6b08f3ae 3473 adapter->ofdev = dev;
1acf2318 3474
61c7a080 3475 adapter_handle = of_get_property(dev->dev.of_node, "ibm,hea-handle",
d1d25aab 3476 NULL);
061bf3cd
TK		 3477 if (adapter_handle)
3478 adapter->handle = *adapter_handle;
3479
3480 if (!adapter->handle) {
6b08f3ae 3481 dev_err(&dev->dev, "failed getting handle for adapter"
61c7a080 3482 " '%s'\n", dev->dev.of_node->full_name);
7a291083
JBT		 3483 ret = -ENODEV;
3484 goto out_free_ad;
3485 }
3486
7a291083
JBT		 3487 adapter->pd = EHEA_PD_ID;
3488
c7ae011d 3489 dev_set_drvdata(&dev->dev, adapter);
7a291083 3490
7a291083
JBT		 3491
3492 /* initialize adapter and ports */
3493 /* get adapter properties */
3494 ret = ehea_sense_adapter_attr(adapter);
3495 if (ret) {
898eb71c 3496 dev_err(&dev->dev, "sense_adapter_attr failed: %d\n", ret);
1211bb6d 3497 goto out_free_ad;
7a291083 3498 }
7a291083
JBT		 3499
3500 adapter->neq = ehea_create_eq(adapter,
3501 EHEA_NEQ, EHEA_MAX_ENTRIES_EQ, 1);
3502 if (!adapter->neq) {
1eef4e04 3503 ret = -EIO;
898eb71c 3504 dev_err(&dev->dev, "NEQ creation failed\n");
1211bb6d 3505 goto out_free_ad;
7a291083
JBT		 3506 }
3507
3508 tasklet_init(&adapter->neq_tasklet, ehea_neq_tasklet,
3509 (unsigned long)adapter);
3510
6b08f3ae 3511 ret = ibmebus_request_irq(adapter->neq->attr.ist1,
38515e90 3512 ehea_interrupt_neq, IRQF_DISABLED,
7a291083
JBT		 3513 "ehea_neq", adapter);
3514 if (ret) {
898eb71c 3515 dev_err(&dev->dev, "requesting NEQ IRQ failed\n");
7a291083
JBT		 3516 goto out_kill_eq;
3517 }
3518
1eef4e04
JBT		 3519 ret = ehea_create_device_sysfs(dev);
3520 if (ret)
3bf76b81 3521 goto out_free_irq;
1acf2318 3522
7a291083
JBT		 3523 ret = ehea_setup_ports(adapter);
3524 if (ret) {
898eb71c 3525 dev_err(&dev->dev, "setup_ports failed\n");
1acf2318 3526 goto out_rem_dev_sysfs;
7a291083
JBT		 3527 }
3528
3529 ret = 0;
3530 goto out;
3531
1acf2318
JBT		 3532out_rem_dev_sysfs:
3533 ehea_remove_device_sysfs(dev);
3534
7a291083 3535out_free_irq:
6b08f3ae 3536 ibmebus_free_irq(adapter->neq->attr.ist1, adapter);
7a291083
JBT		 3537
3538out_kill_eq:
3539 ehea_destroy_eq(adapter->neq);
3540
7a291083 3541out_free_ad:
51621fbd 3542 list_del(&adapter->list);
7a291083 3543 kfree(adapter);
21eee2dd 3544
7a291083 3545out:
21eee2dd 3546 ehea_update_firmware_handles();
52e21b1b 3547
7a291083
JBT		 3548 return ret;
3549}
3550
2dc11581 3551static int __devexit ehea_remove(struct platform_device *dev)
7a291083 3552{
c7ae011d 3553 struct ehea_adapter *adapter = dev_get_drvdata(&dev->dev);
7a291083
JBT		 3554 int i;
3555
1acf2318 3556 for (i = 0; i < EHEA_MAX_PORTS; i++)
7a291083
JBT		 3557 if (adapter->port[i]) {
3558 ehea_shutdown_single_port(adapter->port[i]);
3559 adapter->port[i] = NULL;
3560 }
1acf2318
JBT		 3561
3562 ehea_remove_device_sysfs(dev);
3563
3bf76b81 3564 flush_scheduled_work();
7a291083 3565
6b08f3ae 3566 ibmebus_free_irq(adapter->neq->attr.ist1, adapter);
d4150a27 3567 tasklet_kill(&adapter->neq_tasklet);
7a291083
JBT		 3568
3569 ehea_destroy_eq(adapter->neq);
1211bb6d 3570 ehea_remove_adapter_mr(adapter);
44c82152 3571 list_del(&adapter->list);
7a291083 3572 kfree(adapter);
44c82152 3573
21eee2dd 3574 ehea_update_firmware_handles();
21eee2dd 3575
7a291083
JBT		 3576 return 0;
3577}
3578
21eee2dd
TK		 3579void ehea_crash_handler(void)
3580{
3581 int i;
3582
3583 if (ehea_fw_handles.arr)
3584 for (i = 0; i < ehea_fw_handles.num_entries; i++)
3585 ehea_h_free_resource(ehea_fw_handles.arr[i].adh,
3586 ehea_fw_handles.arr[i].fwh,
3587 FORCE_FREE);
3588
3589 if (ehea_bcmc_regs.arr)
3590 for (i = 0; i < ehea_bcmc_regs.num_entries; i++)
3591 ehea_h_reg_dereg_bcmc(ehea_bcmc_regs.arr[i].adh,
3592 ehea_bcmc_regs.arr[i].port_id,
3593 ehea_bcmc_regs.arr[i].reg_type,
3594 ehea_bcmc_regs.arr[i].macaddr,
3595 0, H_DEREG_BCMC);
3596}
3597
48cfb14f
HH		 3598static int ehea_mem_notifier(struct notifier_block *nb,
3599 unsigned long action, void *data)
3600{
a7c561f2 3601 int ret = NOTIFY_BAD;
d4f12daf 3602 struct memory_notify *arg = data;
a7c561f2 3603
099473c1 3604 mutex_lock(&dlpar_mem_lock);
a7c561f2 3605
48cfb14f 3606 switch (action) {
d4f12daf
HH		 3607 case MEM_CANCEL_OFFLINE:
3608 ehea_info("memory offlining canceled");
3609 /* Readd canceled memory block */
3610 case MEM_ONLINE:
3611 ehea_info("memory is going online");
3876732c 3612 set_bit(__EHEA_STOP_XFER, &ehea_driver_flags);
d4f12daf 3613 if (ehea_add_sect_bmap(arg->start_pfn, arg->nr_pages))
a7c561f2 3614 goto out_unlock;
d4f12daf
HH		 3615 ehea_rereg_mrs(NULL);
3616 break;
3617 case MEM_GOING_OFFLINE:
3618 ehea_info("memory is going offline");
3876732c 3619 set_bit(__EHEA_STOP_XFER, &ehea_driver_flags);
d4f12daf 3620 if (ehea_rem_sect_bmap(arg->start_pfn, arg->nr_pages))
a7c561f2 3621 goto out_unlock;
48cfb14f
HH		 3622 ehea_rereg_mrs(NULL);
3623 break;
3624 default:
3625 break;
3626 }
52e21b1b
JBT		 3627
3628 ehea_update_firmware_handles();
a7c561f2 3629 ret = NOTIFY_OK;
52e21b1b 3630
a7c561f2
TK		 3631out_unlock:
3632 mutex_unlock(&dlpar_mem_lock);
a7c561f2 3633 return ret;
48cfb14f
HH		 3634}
3635
3636static struct notifier_block ehea_mem_nb = {
3637 .notifier_call = ehea_mem_notifier,
3638};
3639
2a6f4e49
JBT		 3640static int ehea_reboot_notifier(struct notifier_block *nb,
3641 unsigned long action, void *unused)
3642{
3643 if (action == SYS_RESTART) {
3644 ehea_info("Reboot: freeing all eHEA resources");
3645 ibmebus_unregister_driver(&ehea_driver);
3646 }
3647 return NOTIFY_DONE;
3648}
3649
3650static struct notifier_block ehea_reboot_nb = {
508d2b5d 3651 .notifier_call = ehea_reboot_notifier,
2a6f4e49
JBT		 3652};
3653
7a291083
JBT		 3654static int check_module_parm(void)
3655{
3656 int ret = 0;
3657
3658 if ((rq1_entries < EHEA_MIN_ENTRIES_QP) ||
3659 (rq1_entries > EHEA_MAX_ENTRIES_RQ1)) {
3660 ehea_info("Bad parameter: rq1_entries");
3661 ret = -EINVAL;
3662 }
3663 if ((rq2_entries < EHEA_MIN_ENTRIES_QP) ||
3664 (rq2_entries > EHEA_MAX_ENTRIES_RQ2)) {
3665 ehea_info("Bad parameter: rq2_entries");
3666 ret = -EINVAL;
3667 }
3668 if ((rq3_entries < EHEA_MIN_ENTRIES_QP) ||
3669 (rq3_entries > EHEA_MAX_ENTRIES_RQ3)) {
3670 ehea_info("Bad parameter: rq3_entries");
3671 ret = -EINVAL;
3672 }
3673 if ((sq_entries < EHEA_MIN_ENTRIES_QP) ||
3674 (sq_entries > EHEA_MAX_ENTRIES_SQ)) {
3675 ehea_info("Bad parameter: sq_entries");
3676 ret = -EINVAL;
3677 }
3678
3679 return ret;
3680}
3681
4c3ca4da
JBT		 3682static ssize_t ehea_show_capabilities(struct device_driver *drv,
3683 char *buf)
3684{
3685 return sprintf(buf, "%d", EHEA_CAPABILITIES);
3686}
3687
3688static DRIVER_ATTR(capabilities, S_IRUSR | S_IRGRP | S_IROTH,
3689 ehea_show_capabilities, NULL);
3690
7a291083
JBT		 3691int __init ehea_module_init(void)
3692{
3693 int ret;
3694
3695 printk(KERN_INFO "IBM eHEA ethernet device driver (Release %s)\n",
3696 DRV_VERSION);
3697
44c82152
TK		 3698
3699 INIT_WORK(&ehea_rereg_mr_task, ehea_rereg_mrs);
21eee2dd
TK		 3700 memset(&ehea_fw_handles, 0, sizeof(ehea_fw_handles));
3701 memset(&ehea_bcmc_regs, 0, sizeof(ehea_bcmc_regs));
3702
9f71a568 3703 mutex_init(&ehea_fw_handles.lock);
5c2cec14 3704 spin_lock_init(&ehea_bcmc_regs.lock);
44c82152 3705
7a291083
JBT		 3706 ret = check_module_parm();
3707 if (ret)
3708 goto out;
44c82152
TK		 3709
3710 ret = ehea_create_busmap();
3711 if (ret)
3712 goto out;
3713
21eee2dd
TK		 3714 ret = register_reboot_notifier(&ehea_reboot_nb);
3715 if (ret)
3716 ehea_info("failed registering reboot notifier");
3717
48cfb14f
HH		 3718 ret = register_memory_notifier(&ehea_mem_nb);
3719 if (ret)
3720 ehea_info("failed registering memory remove notifier");
3721
c061b18d 3722 ret = crash_shutdown_register(ehea_crash_handler);
21eee2dd
TK		 3723 if (ret)
3724 ehea_info("failed registering crash handler");
2a6f4e49 3725
7a291083 3726 ret = ibmebus_register_driver(&ehea_driver);
4c3ca4da 3727 if (ret) {
7a291083 3728 ehea_error("failed registering eHEA device driver on ebus");
21eee2dd 3729 goto out2;
4c3ca4da
JBT		 3730 }
3731
3732 ret = driver_create_file(&ehea_driver.driver,
3733 &driver_attr_capabilities);
3734 if (ret) {
3735 ehea_error("failed to register capabilities attribute, ret=%d",
3736 ret);
21eee2dd 3737 goto out3;
4c3ca4da 3738 }
7a291083 3739
21eee2dd
TK		 3740 return ret;
3741
3742out3:
3743 ibmebus_unregister_driver(&ehea_driver);
3744out2:
48cfb14f 3745 unregister_memory_notifier(&ehea_mem_nb);
21eee2dd 3746 unregister_reboot_notifier(&ehea_reboot_nb);
c061b18d 3747 crash_shutdown_unregister(ehea_crash_handler);
7a291083
JBT		 3748out:
3749 return ret;
3750}
3751
3752static void __exit ehea_module_exit(void)
3753{
21eee2dd
TK		 3754 int ret;
3755
3bf76b81 3756 flush_scheduled_work();
4c3ca4da 3757 driver_remove_file(&ehea_driver.driver, &driver_attr_capabilities);
7a291083 3758 ibmebus_unregister_driver(&ehea_driver);
2a6f4e49 3759 unregister_reboot_notifier(&ehea_reboot_nb);
c061b18d 3760 ret = crash_shutdown_unregister(ehea_crash_handler);
21eee2dd
TK		 3761 if (ret)
3762 ehea_info("failed unregistering crash handler");
48cfb14f 3763 unregister_memory_notifier(&ehea_mem_nb);
21eee2dd
TK		 3764 kfree(ehea_fw_handles.arr);
3765 kfree(ehea_bcmc_regs.arr);
44c82152 3766 ehea_destroy_busmap();
7a291083
JBT		 3767}
3768
3769module_init(ehea_module_init);
3770module_exit(ehea_module_exit);
Clone of davem's net-next-2.6 tree