projects / deliverable / linux.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
net: trans_start cleanups
[deliverable/linux.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
6b08f3ae 110static int __devinit ehea_probe_adapter(struct of_device *dev,
d1d25aab 111 const struct of_device_id *id);
d1dea38d 112
6b08f3ae 113static int __devexit ehea_remove(struct of_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 = {
d1dea38d 125 .name = "ehea",
6b08f3ae 126 .match_table = ehea_device_table,
d1dea38d
TK		 127 .probe = ehea_probe_adapter,
128 .remove = ehea_remove,
129};
130
508d2b5d
DM		 131void ehea_dump(void *adr, int len, char *msg)
132{
7a291083
JBT		 133 int x;
134 unsigned char *deb = adr;
135 for (x = 0; x < len; x += 16) {
a1c5a893 136 printk(DRV_NAME " %s adr=%p ofs=%04x %016llx %016llx\n", msg,
508d2b5d 137 deb, x, *((u64 *)&deb[0]), *((u64 *)&deb[8]));
7a291083
JBT		 138 deb += 16;
139 }
140}
141
2f69ae01
JBT		 142void ehea_schedule_port_reset(struct ehea_port *port)
143{
144 if (!test_bit(__EHEA_DISABLE_PORT_RESET, &port->flags))
145 schedule_work(&port->reset_task);
146}
147
21eee2dd
TK		 148static void ehea_update_firmware_handles(void)
149{
150 struct ehea_fw_handle_entry *arr = NULL;
151 struct ehea_adapter *adapter;
152 int num_adapters = 0;
153 int num_ports = 0;
154 int num_portres = 0;
155 int i = 0;
156 int num_fw_handles, k, l;
157
158 /* Determine number of handles */
52e21b1b
JBT		 159 mutex_lock(&ehea_fw_handles.lock);
160
21eee2dd
TK		 161 list_for_each_entry(adapter, &adapter_list, list) {
162 num_adapters++;
163
164 for (k = 0; k < EHEA_MAX_PORTS; k++) {
165 struct ehea_port *port = adapter->port[k];
166
167 if (!port || (port->state != EHEA_PORT_UP))
168 continue;
169
170 num_ports++;
171 num_portres += port->num_def_qps + port->num_add_tx_qps;
172 }
173 }
174
175 num_fw_handles = num_adapters * EHEA_NUM_ADAPTER_FW_HANDLES +
176 num_ports * EHEA_NUM_PORT_FW_HANDLES +
177 num_portres * EHEA_NUM_PORTRES_FW_HANDLES;
178
179 if (num_fw_handles) {
180 arr = kzalloc(num_fw_handles * sizeof(*arr), GFP_KERNEL);
181 if (!arr)
52e21b1b 182 goto out; /* Keep the existing array */
21eee2dd
TK		 183 } else
184 goto out_update;
185
186 list_for_each_entry(adapter, &adapter_list, list) {
52e21b1b
JBT		 187 if (num_adapters == 0)
188 break;
189
21eee2dd
TK		 190 for (k = 0; k < EHEA_MAX_PORTS; k++) {
191 struct ehea_port *port = adapter->port[k];
192
8e95a202
JP		 193 if (!port || (port->state != EHEA_PORT_UP) ||
194 (num_ports == 0))
21eee2dd
TK		 195 continue;
196
197 for (l = 0;
198 l < port->num_def_qps + port->num_add_tx_qps;
199 l++) {
200 struct ehea_port_res *pr = &port->port_res[l];
201
202 arr[i].adh = adapter->handle;
203 arr[i++].fwh = pr->qp->fw_handle;
204 arr[i].adh = adapter->handle;
205 arr[i++].fwh = pr->send_cq->fw_handle;
206 arr[i].adh = adapter->handle;
207 arr[i++].fwh = pr->recv_cq->fw_handle;
208 arr[i].adh = adapter->handle;
209 arr[i++].fwh = pr->eq->fw_handle;
210 arr[i].adh = adapter->handle;
211 arr[i++].fwh = pr->send_mr.handle;
212 arr[i].adh = adapter->handle;
213 arr[i++].fwh = pr->recv_mr.handle;
214 }
215 arr[i].adh = adapter->handle;
216 arr[i++].fwh = port->qp_eq->fw_handle;
52e21b1b 217 num_ports--;
21eee2dd
TK		 218 }
219
220 arr[i].adh = adapter->handle;
221 arr[i++].fwh = adapter->neq->fw_handle;
222
223 if (adapter->mr.handle) {
224 arr[i].adh = adapter->handle;
225 arr[i++].fwh = adapter->mr.handle;
226 }
52e21b1b 227 num_adapters--;
21eee2dd
TK		 228 }
229
230out_update:
231 kfree(ehea_fw_handles.arr);
232 ehea_fw_handles.arr = arr;
233 ehea_fw_handles.num_entries = i;
52e21b1b
JBT		 234out:
235 mutex_unlock(&ehea_fw_handles.lock);
21eee2dd
TK		 236}
237
238static void ehea_update_bcmc_registrations(void)
239{
52e21b1b 240 unsigned long flags;
21eee2dd
TK		 241 struct ehea_bcmc_reg_entry *arr = NULL;
242 struct ehea_adapter *adapter;
243 struct ehea_mc_list *mc_entry;
244 int num_registrations = 0;
245 int i = 0;
246 int k;
247
52e21b1b
JBT		 248 spin_lock_irqsave(&ehea_bcmc_regs.lock, flags);
249
21eee2dd
TK		 250 /* Determine number of registrations */
251 list_for_each_entry(adapter, &adapter_list, list)
252 for (k = 0; k < EHEA_MAX_PORTS; k++) {
253 struct ehea_port *port = adapter->port[k];
254
255 if (!port || (port->state != EHEA_PORT_UP))
256 continue;
257
258 num_registrations += 2; /* Broadcast registrations */
259
260 list_for_each_entry(mc_entry, &port->mc_list->list,list)
261 num_registrations += 2;
262 }
263
264 if (num_registrations) {
5c2cec14 265 arr = kzalloc(num_registrations * sizeof(*arr), GFP_ATOMIC);
21eee2dd 266 if (!arr)
52e21b1b 267 goto out; /* Keep the existing array */
21eee2dd
TK		 268 } else
269 goto out_update;
270
271 list_for_each_entry(adapter, &adapter_list, list) {
272 for (k = 0; k < EHEA_MAX_PORTS; k++) {
273 struct ehea_port *port = adapter->port[k];
274
275 if (!port || (port->state != EHEA_PORT_UP))
276 continue;
277
52e21b1b
JBT		 278 if (num_registrations == 0)
279 goto out_update;
280
21eee2dd
TK		 281 arr[i].adh = adapter->handle;
282 arr[i].port_id = port->logical_port_id;
283 arr[i].reg_type = EHEA_BCMC_BROADCAST |
284 EHEA_BCMC_UNTAGGED;
285 arr[i++].macaddr = port->mac_addr;
286
287 arr[i].adh = adapter->handle;
288 arr[i].port_id = port->logical_port_id;
289 arr[i].reg_type = EHEA_BCMC_BROADCAST |
290 EHEA_BCMC_VLANID_ALL;
291 arr[i++].macaddr = port->mac_addr;
52e21b1b 292 num_registrations -= 2;
21eee2dd
TK		 293
294 list_for_each_entry(mc_entry,
295 &port->mc_list->list, list) {
52e21b1b
JBT		 296 if (num_registrations == 0)
297 goto out_update;
298
21eee2dd
TK		 299 arr[i].adh = adapter->handle;
300 arr[i].port_id = port->logical_port_id;
301 arr[i].reg_type = EHEA_BCMC_SCOPE_ALL |
302 EHEA_BCMC_MULTICAST |
303 EHEA_BCMC_UNTAGGED;
304 arr[i++].macaddr = mc_entry->macaddr;
305
306 arr[i].adh = adapter->handle;
307 arr[i].port_id = port->logical_port_id;
308 arr[i].reg_type = EHEA_BCMC_SCOPE_ALL |
309 EHEA_BCMC_MULTICAST |
310 EHEA_BCMC_VLANID_ALL;
311 arr[i++].macaddr = mc_entry->macaddr;
52e21b1b 312 num_registrations -= 2;
21eee2dd
TK		 313 }
314 }
315 }
316
317out_update:
318 kfree(ehea_bcmc_regs.arr);
319 ehea_bcmc_regs.arr = arr;
320 ehea_bcmc_regs.num_entries = i;
52e21b1b
JBT		 321out:
322 spin_unlock_irqrestore(&ehea_bcmc_regs.lock, flags);
21eee2dd
TK		 323}
324
7a291083
JBT		 325static struct net_device_stats *ehea_get_stats(struct net_device *dev)
326{
327 struct ehea_port *port = netdev_priv(dev);
328 struct net_device_stats *stats = &port->stats;
329 struct hcp_ehea_port_cb2 *cb2;
7393b87c 330 u64 hret, rx_packets, tx_packets;
7a291083
JBT		 331 int i;
332
333 memset(stats, 0, sizeof(*stats));
334
3faf2693 335 cb2 = (void *)get_zeroed_page(GFP_ATOMIC);
7a291083
JBT		 336 if (!cb2) {
337 ehea_error("no mem for cb2");
338 goto out;
339 }
340
341 hret = ehea_h_query_ehea_port(port->adapter->handle,
342 port->logical_port_id,
343 H_PORT_CB2, H_PORT_CB2_ALL, cb2);
344 if (hret != H_SUCCESS) {
345 ehea_error("query_ehea_port failed");
346 goto out_herr;
347 }
348
349 if (netif_msg_hw(port))
350 ehea_dump(cb2, sizeof(*cb2), "net_device_stats");
351
352 rx_packets = 0;
353 for (i = 0; i < port->num_def_qps; i++)
354 rx_packets += port->port_res[i].rx_packets;
355
7393b87c
TK		 356 tx_packets = 0;
357 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
358 tx_packets += port->port_res[i].tx_packets;
359
360 stats->tx_packets = tx_packets;
7a291083
JBT		 361 stats->multicast = cb2->rxmcp;
362 stats->rx_errors = cb2->rxuerr;
363 stats->rx_bytes = cb2->rxo;
364 stats->tx_bytes = cb2->txo;
365 stats->rx_packets = rx_packets;
366
367out_herr:
3faf2693 368 free_page((unsigned long)cb2);
7a291083
JBT		 369out:
370 return stats;
371}
372
373static void ehea_refill_rq1(struct ehea_port_res *pr, int index, int nr_of_wqes)
374{
375 struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
376 struct net_device *dev = pr->port->netdev;
377 int max_index_mask = pr->rq1_skba.len - 1;
2c69448b
JBT		 378 int fill_wqes = pr->rq1_skba.os_skbs + nr_of_wqes;
379 int adder = 0;
7a291083
JBT		 380 int i;
381
2c69448b
JBT		 382 pr->rq1_skba.os_skbs = 0;
383
384 if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) {
44fb3126
TK		 385 if (nr_of_wqes > 0)
386 pr->rq1_skba.index = index;
2c69448b 387 pr->rq1_skba.os_skbs = fill_wqes;
7a291083 388 return;
2c69448b 389 }
7a291083 390
2c69448b 391 for (i = 0; i < fill_wqes; i++) {
7a291083
JBT		 392 if (!skb_arr_rq1[index]) {
393 skb_arr_rq1[index] = netdev_alloc_skb(dev,
394 EHEA_L_PKT_SIZE);
395 if (!skb_arr_rq1[index]) {
2c69448b 396 pr->rq1_skba.os_skbs = fill_wqes - i;
7a291083
JBT		 397 break;
398 }
399 }
400 index--;
401 index &= max_index_mask;
2c69448b 402 adder++;
7a291083 403 }
2c69448b
JBT		 404
405 if (adder == 0)
406 return;
407
7a291083 408 /* Ring doorbell */
2c69448b 409 ehea_update_rq1a(pr->qp, adder);
7a291083
JBT		 410}
411
e2878806 412static void ehea_init_fill_rq1(struct ehea_port_res *pr, int nr_rq1a)
7a291083 413{
7a291083
JBT		 414 struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
415 struct net_device *dev = pr->port->netdev;
416 int i;
417
418 for (i = 0; i < pr->rq1_skba.len; i++) {
419 skb_arr_rq1[i] = netdev_alloc_skb(dev, EHEA_L_PKT_SIZE);
e2878806
TK		 420 if (!skb_arr_rq1[i])
421 break;
7a291083
JBT		 422 }
423 /* Ring doorbell */
424 ehea_update_rq1a(pr->qp, nr_rq1a);
7a291083
JBT		 425}
426
427static int ehea_refill_rq_def(struct ehea_port_res *pr,
428 struct ehea_q_skb_arr *q_skba, int rq_nr,
429 int num_wqes, int wqe_type, int packet_size)
430{
431 struct net_device *dev = pr->port->netdev;
432 struct ehea_qp *qp = pr->qp;
433 struct sk_buff **skb_arr = q_skba->arr;
434 struct ehea_rwqe *rwqe;
435 int i, index, max_index_mask, fill_wqes;
2c69448b 436 int adder = 0;
7a291083
JBT		 437 int ret = 0;
438
439 fill_wqes = q_skba->os_skbs + num_wqes;
2c69448b 440 q_skba->os_skbs = 0;
7a291083 441
2c69448b
JBT		 442 if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) {
443 q_skba->os_skbs = fill_wqes;
7a291083 444 return ret;
2c69448b 445 }
7a291083
JBT		 446
447 index = q_skba->index;
448 max_index_mask = q_skba->len - 1;
449 for (i = 0; i < fill_wqes; i++) {
2c69448b 450 u64 tmp_addr;
89d71a66
ED		 451 struct sk_buff *skb;
452
453 skb = netdev_alloc_skb_ip_align(dev, packet_size);
7a291083 454 if (!skb) {
7a291083 455 q_skba->os_skbs = fill_wqes - i;
e2878806
TK		 456 if (q_skba->os_skbs == q_skba->len - 2) {
457 ehea_info("%s: rq%i ran dry - no mem for skb",
458 pr->port->netdev->name, rq_nr);
459 ret = -ENOMEM;
460 }
7a291083
JBT		 461 break;
462 }
7a291083
JBT		 463
464 skb_arr[index] = skb;
2c69448b
JBT		 465 tmp_addr = ehea_map_vaddr(skb->data);
466 if (tmp_addr == -1) {
467 dev_kfree_skb(skb);
468 q_skba->os_skbs = fill_wqes - i;
469 ret = 0;
470 break;
471 }
7a291083
JBT		 472
473 rwqe = ehea_get_next_rwqe(qp, rq_nr);
474 rwqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, wqe_type)
d1d25aab 475 | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, index);
7a291083 476 rwqe->sg_list[0].l_key = pr->recv_mr.lkey;
2c69448b 477 rwqe->sg_list[0].vaddr = tmp_addr;
7a291083
JBT		 478 rwqe->sg_list[0].len = packet_size;
479 rwqe->data_segments = 1;
480
481 index++;
482 index &= max_index_mask;
2c69448b 483 adder++;
7a291083 484 }
44c82152 485
7a291083 486 q_skba->index = index;
2c69448b
JBT		 487 if (adder == 0)
488 goto out;
7a291083
JBT		 489
490 /* Ring doorbell */
491 iosync();
492 if (rq_nr == 2)
2c69448b 493 ehea_update_rq2a(pr->qp, adder);
7a291083 494 else
2c69448b 495 ehea_update_rq3a(pr->qp, adder);
44c82152 496out:
7a291083
JBT		 497 return ret;
498}
499
500
501static int ehea_refill_rq2(struct ehea_port_res *pr, int nr_of_wqes)
502{
503 return ehea_refill_rq_def(pr, &pr->rq2_skba, 2,
504 nr_of_wqes, EHEA_RWQE2_TYPE,
89d71a66 505 EHEA_RQ2_PKT_SIZE);
7a291083
JBT		 506}
507
508
509static int ehea_refill_rq3(struct ehea_port_res *pr, int nr_of_wqes)
510{
511 return ehea_refill_rq_def(pr, &pr->rq3_skba, 3,
512 nr_of_wqes, EHEA_RWQE3_TYPE,
89d71a66 513 EHEA_MAX_PACKET_SIZE);
7a291083
JBT		 514}
515
516static inline int ehea_check_cqe(struct ehea_cqe *cqe, int *rq_num)
517{
518 *rq_num = (cqe->type & EHEA_CQE_TYPE_RQ) >> 5;
519 if ((cqe->status & EHEA_CQE_STAT_ERR_MASK) == 0)
520 return 0;
521 if (((cqe->status & EHEA_CQE_STAT_ERR_TCP) != 0) &&
522 (cqe->header_length == 0))
523 return 0;
524 return -EINVAL;
525}
526
527static inline void ehea_fill_skb(struct net_device *dev,
528 struct sk_buff *skb, struct ehea_cqe *cqe)
529{
530 int length = cqe->num_bytes_transfered - 4; /*remove CRC */
531
532 skb_put(skb, length);
533 skb->ip_summed = CHECKSUM_UNNECESSARY;
534 skb->protocol = eth_type_trans(skb, dev);
535}
536
537static inline struct sk_buff *get_skb_by_index(struct sk_buff **skb_array,
538 int arr_len,
539 struct ehea_cqe *cqe)
540{
541 int skb_index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, cqe->wr_id);
542 struct sk_buff *skb;
543 void *pref;
544 int x;
545
546 x = skb_index + 1;
547 x &= (arr_len - 1);
548
549 pref = skb_array[x];
0b2febf3
HH		 550 if (pref) {
551 prefetchw(pref);
552 prefetchw(pref + EHEA_CACHE_LINE);
553
554 pref = (skb_array[x]->data);
555 prefetch(pref);
556 prefetch(pref + EHEA_CACHE_LINE);
557 prefetch(pref + EHEA_CACHE_LINE * 2);
558 prefetch(pref + EHEA_CACHE_LINE * 3);
559 }
560
7a291083
JBT		 561 skb = skb_array[skb_index];
562 skb_array[skb_index] = NULL;
563 return skb;
564}
565
566static inline struct sk_buff *get_skb_by_index_ll(struct sk_buff **skb_array,
567 int arr_len, int wqe_index)
568{
569 struct sk_buff *skb;
570 void *pref;
571 int x;
572
573 x = wqe_index + 1;
574 x &= (arr_len - 1);
575
576 pref = skb_array[x];
0b2febf3
HH		 577 if (pref) {
578 prefetchw(pref);
579 prefetchw(pref + EHEA_CACHE_LINE);
7a291083 580
0b2febf3
HH		 581 pref = (skb_array[x]->data);
582 prefetchw(pref);
583 prefetchw(pref + EHEA_CACHE_LINE);
584 }
7a291083
JBT		 585
586 skb = skb_array[wqe_index];
587 skb_array[wqe_index] = NULL;
588 return skb;
589}
590
591static int ehea_treat_poll_error(struct ehea_port_res *pr, int rq,
592 struct ehea_cqe *cqe, int *processed_rq2,
593 int *processed_rq3)
594{
595 struct sk_buff *skb;
596
acbddb59
JBT		 597 if (cqe->status & EHEA_CQE_STAT_ERR_TCP)
598 pr->p_stats.err_tcp_cksum++;
599 if (cqe->status & EHEA_CQE_STAT_ERR_IP)
600 pr->p_stats.err_ip_cksum++;
601 if (cqe->status & EHEA_CQE_STAT_ERR_CRC)
602 pr->p_stats.err_frame_crc++;
603
7a291083
JBT		 604 if (rq == 2) {
605 *processed_rq2 += 1;
606 skb = get_skb_by_index(pr->rq2_skba.arr, pr->rq2_skba.len, cqe);
607 dev_kfree_skb(skb);
608 } else if (rq == 3) {
609 *processed_rq3 += 1;
610 skb = get_skb_by_index(pr->rq3_skba.arr, pr->rq3_skba.len, cqe);
611 dev_kfree_skb(skb);
612 }
613
614 if (cqe->status & EHEA_CQE_STAT_FAT_ERR_MASK) {
58dd8258
TK		 615 if (netif_msg_rx_err(pr->port)) {
616 ehea_error("Critical receive error for QP %d. "
617 "Resetting port.", pr->qp->init_attr.qp_nr);
618 ehea_dump(cqe, sizeof(*cqe), "CQE");
619 }
2f69ae01 620 ehea_schedule_port_reset(pr->port);
7a291083
JBT		 621 return 1;
622 }
623
624 return 0;
625}
626
d4dc4ec9
JBT		 627static int get_skb_hdr(struct sk_buff *skb, void **iphdr,
628 void **tcph, u64 *hdr_flags, void *priv)
629{
630 struct ehea_cqe *cqe = priv;
631 unsigned int ip_len;
632 struct iphdr *iph;
633
634 /* non tcp/udp packets */
635 if (!cqe->header_length)
636 return -1;
637
638 /* non tcp packet */
639 skb_reset_network_header(skb);
640 iph = ip_hdr(skb);
641 if (iph->protocol != IPPROTO_TCP)
642 return -1;
643
644 ip_len = ip_hdrlen(skb);
645 skb_set_transport_header(skb, ip_len);
646 *tcph = tcp_hdr(skb);
647
648 /* check if ip header and tcp header are complete */
3ff2cd23 649 if (ntohs(iph->tot_len) < ip_len + tcp_hdrlen(skb))
d4dc4ec9
JBT		 650 return -1;
651
652 *hdr_flags = LRO_IPV4 | LRO_TCP;
653 *iphdr = iph;
654
655 return 0;
656}
657
658static void ehea_proc_skb(struct ehea_port_res *pr, struct ehea_cqe *cqe,
659 struct sk_buff *skb)
660{
8e95a202
JP		 661 int vlan_extracted = ((cqe->status & EHEA_CQE_VLAN_TAG_XTRACT) &&
662 pr->port->vgrp);
d4dc4ec9
JBT		 663
664 if (use_lro) {
665 if (vlan_extracted)
666 lro_vlan_hwaccel_receive_skb(&pr->lro_mgr, skb,
667 pr->port->vgrp,
668 cqe->vlan_tag,
669 cqe);
670 else
671 lro_receive_skb(&pr->lro_mgr, skb, cqe);
672 } else {
673 if (vlan_extracted)
674 vlan_hwaccel_receive_skb(skb, pr->port->vgrp,
675 cqe->vlan_tag);
676 else
677 netif_receive_skb(skb);
678 }
679}
680
bea3348e
SH		 681static int ehea_proc_rwqes(struct net_device *dev,
682 struct ehea_port_res *pr,
683 int budget)
7a291083 684{
18604c54 685 struct ehea_port *port = pr->port;
7a291083
JBT		 686 struct ehea_qp *qp = pr->qp;
687 struct ehea_cqe *cqe;
688 struct sk_buff *skb;
689 struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
690 struct sk_buff **skb_arr_rq2 = pr->rq2_skba.arr;
691 struct sk_buff **skb_arr_rq3 = pr->rq3_skba.arr;
692 int skb_arr_rq1_len = pr->rq1_skba.len;
693 int skb_arr_rq2_len = pr->rq2_skba.len;
694 int skb_arr_rq3_len = pr->rq3_skba.len;
695 int processed, processed_rq1, processed_rq2, processed_rq3;
bea3348e 696 int wqe_index, last_wqe_index, rq, port_reset;
7a291083
JBT		 697
698 processed = processed_rq1 = processed_rq2 = processed_rq3 = 0;
699 last_wqe_index = 0;
7a291083 700
7a291083 701 cqe = ehea_poll_rq1(qp, &wqe_index);
bea3348e 702 while ((processed < budget) && cqe) {
7a291083
JBT		 703 ehea_inc_rq1(qp);
704 processed_rq1++;
705 processed++;
7a291083
JBT		 706 if (netif_msg_rx_status(port))
707 ehea_dump(cqe, sizeof(*cqe), "CQE");
708
709 last_wqe_index = wqe_index;
710 rmb();
711 if (!ehea_check_cqe(cqe, &rq)) {
508d2b5d
DM		 712 if (rq == 1) {
713 /* LL RQ1 */
7a291083
JBT		 714 skb = get_skb_by_index_ll(skb_arr_rq1,
715 skb_arr_rq1_len,
716 wqe_index);
717 if (unlikely(!skb)) {
718 if (netif_msg_rx_err(port))
719 ehea_error("LL rq1: skb=NULL");
18604c54 720
bea3348e 721 skb = netdev_alloc_skb(dev,
7a291083
JBT		 722 EHEA_L_PKT_SIZE);
723 if (!skb)
724 break;
725 }
508d2b5d 726 skb_copy_to_linear_data(skb, ((char *)cqe) + 64,
d1d25aab 727 cqe->num_bytes_transfered - 4);
bea3348e 728 ehea_fill_skb(dev, skb, cqe);
508d2b5d
DM		 729 } else if (rq == 2) {
730 /* RQ2 */
7a291083
JBT		 731 skb = get_skb_by_index(skb_arr_rq2,
732 skb_arr_rq2_len, cqe);
733 if (unlikely(!skb)) {
734 if (netif_msg_rx_err(port))
735 ehea_error("rq2: skb=NULL");
736 break;
737 }
bea3348e 738 ehea_fill_skb(dev, skb, cqe);
7a291083 739 processed_rq2++;
508d2b5d
DM		 740 } else {
741 /* RQ3 */
7a291083
JBT		 742 skb = get_skb_by_index(skb_arr_rq3,
743 skb_arr_rq3_len, cqe);
744 if (unlikely(!skb)) {
745 if (netif_msg_rx_err(port))
746 ehea_error("rq3: skb=NULL");
747 break;
748 }
bea3348e 749 ehea_fill_skb(dev, skb, cqe);
7a291083
JBT		 750 processed_rq3++;
751 }
752
d4dc4ec9 753 ehea_proc_skb(pr, cqe, skb);
18604c54 754 } else {
acbddb59 755 pr->p_stats.poll_receive_errors++;
7a291083
JBT		 756 port_reset = ehea_treat_poll_error(pr, rq, cqe,
757 &processed_rq2,
758 &processed_rq3);
759 if (port_reset)
760 break;
761 }
762 cqe = ehea_poll_rq1(qp, &wqe_index);
763 }
d4dc4ec9
JBT		 764 if (use_lro)
765 lro_flush_all(&pr->lro_mgr);
7a291083 766
7a291083
JBT		 767 pr->rx_packets += processed;
768
769 ehea_refill_rq1(pr, last_wqe_index, processed_rq1);
770 ehea_refill_rq2(pr, processed_rq2);
771 ehea_refill_rq3(pr, processed_rq3);
772
bea3348e 773 return processed;
7a291083
JBT		 774}
775
18604c54 776static struct ehea_cqe *ehea_proc_cqes(struct ehea_port_res *pr, int my_quota)
7a291083 777{
acbddb59 778 struct sk_buff *skb;
7a291083
JBT		 779 struct ehea_cq *send_cq = pr->send_cq;
780 struct ehea_cqe *cqe;
18604c54 781 int quota = my_quota;
7a291083
JBT		 782 int cqe_counter = 0;
783 int swqe_av = 0;
acbddb59 784 int index;
7a291083
JBT		 785 unsigned long flags;
786
18604c54 787 cqe = ehea_poll_cq(send_cq);
508d2b5d 788 while (cqe && (quota > 0)) {
18604c54
JBT		 789 ehea_inc_cq(send_cq);
790
7a291083
JBT		 791 cqe_counter++;
792 rmb();
793 if (cqe->status & EHEA_CQE_STAT_ERR_MASK) {
ea96ceac
TK		 794 ehea_error("Bad send completion status=0x%04X",
795 cqe->status);
796
7a291083
JBT		 797 if (netif_msg_tx_err(pr->port))
798 ehea_dump(cqe, sizeof(*cqe), "Send CQE");
ea96ceac
TK		 799
800 if (cqe->status & EHEA_CQE_STAT_RESET_MASK) {
801 ehea_error("Resetting port");
802 ehea_schedule_port_reset(pr->port);
803 break;
804 }
7a291083
JBT		 805 }
806
807 if (netif_msg_tx_done(pr->port))
808 ehea_dump(cqe, sizeof(*cqe), "CQE");
809
810 if (likely(EHEA_BMASK_GET(EHEA_WR_ID_TYPE, cqe->wr_id)
acbddb59
JBT		 811 == EHEA_SWQE2_TYPE)) {
812
813 index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, cqe->wr_id);
814 skb = pr->sq_skba.arr[index];
815 dev_kfree_skb(skb);
816 pr->sq_skba.arr[index] = NULL;
817 }
7a291083
JBT		 818
819 swqe_av += EHEA_BMASK_GET(EHEA_WR_ID_REFILL, cqe->wr_id);
820 quota--;
18604c54
JBT		 821
822 cqe = ehea_poll_cq(send_cq);
823 };
7a291083
JBT		 824
825 ehea_update_feca(send_cq, cqe_counter);
826 atomic_add(swqe_av, &pr->swqe_avail);
827
828 spin_lock_irqsave(&pr->netif_queue, flags);
18604c54 829
7a291083
JBT		 830 if (pr->queue_stopped && (atomic_read(&pr->swqe_avail)
831 >= pr->swqe_refill_th)) {
832 netif_wake_queue(pr->port->netdev);
833 pr->queue_stopped = 0;
834 }
835 spin_unlock_irqrestore(&pr->netif_queue, flags);
836
18604c54 837 return cqe;
7a291083
JBT		 838}
839
18604c54 840#define EHEA_NAPI_POLL_NUM_BEFORE_IRQ 16
bea3348e 841#define EHEA_POLL_MAX_CQES 65535
18604c54 842
bea3348e 843static int ehea_poll(struct napi_struct *napi, int budget)
7a291083 844{
508d2b5d
DM		 845 struct ehea_port_res *pr = container_of(napi, struct ehea_port_res,
846 napi);
bea3348e 847 struct net_device *dev = pr->port->netdev;
18604c54
JBT		 848 struct ehea_cqe *cqe;
849 struct ehea_cqe *cqe_skb = NULL;
850 int force_irq, wqe_index;
bea3348e 851 int rx = 0;
18604c54
JBT		 852
853 force_irq = (pr->poll_counter > EHEA_NAPI_POLL_NUM_BEFORE_IRQ);
bea3348e
SH		 854 cqe_skb = ehea_proc_cqes(pr, EHEA_POLL_MAX_CQES);
855
856 if (!force_irq)
857 rx += ehea_proc_rwqes(dev, pr, budget - rx);
18604c54 858
bea3348e 859 while ((rx != budget) || force_irq) {
18604c54 860 pr->poll_counter = 0;
bea3348e 861 force_irq = 0;
288379f0 862 napi_complete(napi);
18604c54
JBT		 863 ehea_reset_cq_ep(pr->recv_cq);
864 ehea_reset_cq_ep(pr->send_cq);
865 ehea_reset_cq_n1(pr->recv_cq);
866 ehea_reset_cq_n1(pr->send_cq);
867 cqe = ehea_poll_rq1(pr->qp, &wqe_index);
868 cqe_skb = ehea_poll_cq(pr->send_cq);
869
e542aa6b 870 if (!cqe && !cqe_skb)
bea3348e 871 return rx;
18604c54 872
288379f0 873 if (!napi_reschedule(napi))
bea3348e 874 return rx;
18604c54 875
bea3348e
SH		 876 cqe_skb = ehea_proc_cqes(pr, EHEA_POLL_MAX_CQES);
877 rx += ehea_proc_rwqes(dev, pr, budget - rx);
878 }
e542aa6b 879
bea3348e
SH		 880 pr->poll_counter++;
881 return rx;
7a291083
JBT		 882}
883
8d22c971
JBT		 884#ifdef CONFIG_NET_POLL_CONTROLLER
885static void ehea_netpoll(struct net_device *dev)
886{
887 struct ehea_port *port = netdev_priv(dev);
bea3348e 888 int i;
8d22c971 889
bea3348e 890 for (i = 0; i < port->num_def_qps; i++)
288379f0 891 napi_schedule(&port->port_res[i].napi);
8d22c971
JBT		 892}
893#endif
894
7d12e780 895static irqreturn_t ehea_recv_irq_handler(int irq, void *param)
7a291083
JBT		 896{
897 struct ehea_port_res *pr = param;
18604c54 898
288379f0 899 napi_schedule(&pr->napi);
18604c54 900
7a291083
JBT		 901 return IRQ_HANDLED;
902}
903
7d12e780 904static irqreturn_t ehea_qp_aff_irq_handler(int irq, void *param)
7a291083
JBT		 905{
906 struct ehea_port *port = param;
907 struct ehea_eqe *eqe;
d2db9eea 908 struct ehea_qp *qp;
7a291083 909 u32 qp_token;
ea96ceac
TK		 910 u64 resource_type, aer, aerr;
911 int reset_port = 0;
7a291083
JBT		 912
913 eqe = ehea_poll_eq(port->qp_eq);
bb3a6449 914
7a291083 915 while (eqe) {
7a291083 916 qp_token = EHEA_BMASK_GET(EHEA_EQE_QP_TOKEN, eqe->entry);
a1c5a893 917 ehea_error("QP aff_err: entry=0x%llx, token=0x%x",
bb3a6449 918 eqe->entry, qp_token);
d2db9eea
JBT		 919
920 qp = port->port_res[qp_token].qp;
ea96ceac
TK		 921
922 resource_type = ehea_error_data(port->adapter, qp->fw_handle,
923 &aer, &aerr);
924
925 if (resource_type == EHEA_AER_RESTYPE_QP) {
926 if ((aer & EHEA_AER_RESET_MASK) ||
927 (aerr & EHEA_AERR_RESET_MASK))
928 reset_port = 1;
929 } else
930 reset_port = 1; /* Reset in case of CQ or EQ error */
931
bb3a6449 932 eqe = ehea_poll_eq(port->qp_eq);
7a291083
JBT		 933 }
934
ea96ceac
TK		 935 if (reset_port) {
936 ehea_error("Resetting port");
937 ehea_schedule_port_reset(port);
938 }
d2db9eea 939
7a291083
JBT		 940 return IRQ_HANDLED;
941}
942
943static struct ehea_port *ehea_get_port(struct ehea_adapter *adapter,
944 int logical_port)
945{
946 int i;
947
1acf2318 948 for (i = 0; i < EHEA_MAX_PORTS; i++)
41b69c70 949 if (adapter->port[i])
d1d25aab 950 if (adapter->port[i]->logical_port_id == logical_port)
41b69c70 951 return adapter->port[i];
7a291083
JBT		 952 return NULL;
953}
954
955int ehea_sense_port_attr(struct ehea_port *port)
956{
957 int ret;
958 u64 hret;
959 struct hcp_ehea_port_cb0 *cb0;
960
508d2b5d 961 /* may be called via ehea_neq_tasklet() */
3faf2693 962 cb0 = (void *)get_zeroed_page(GFP_ATOMIC);
508d2b5d 963 if (!cb0) {
7a291083
JBT		 964 ehea_error("no mem for cb0");
965 ret = -ENOMEM;
966 goto out;
967 }
968
969 hret = ehea_h_query_ehea_port(port->adapter->handle,
970 port->logical_port_id, H_PORT_CB0,
971 EHEA_BMASK_SET(H_PORT_CB0_ALL, 0xFFFF),
972 cb0);
973 if (hret != H_SUCCESS) {
974 ret = -EIO;
975 goto out_free;
976 }
977
978 /* MAC address */
979 port->mac_addr = cb0->port_mac_addr << 16;
980
508d2b5d 981 if (!is_valid_ether_addr((u8 *)&port->mac_addr)) {
7a291083
JBT		 982 ret = -EADDRNOTAVAIL;
983 goto out_free;
984 }
985
986 /* Port speed */
987 switch (cb0->port_speed) {
988 case H_SPEED_10M_H:
989 port->port_speed = EHEA_SPEED_10M;
990 port->full_duplex = 0;
991 break;
992 case H_SPEED_10M_F:
993 port->port_speed = EHEA_SPEED_10M;
994 port->full_duplex = 1;
995 break;
996 case H_SPEED_100M_H:
997 port->port_speed = EHEA_SPEED_100M;
998 port->full_duplex = 0;
999 break;
1000 case H_SPEED_100M_F:
1001 port->port_speed = EHEA_SPEED_100M;
1002 port->full_duplex = 1;
1003 break;
1004 case H_SPEED_1G_F:
1005 port->port_speed = EHEA_SPEED_1G;
1006 port->full_duplex = 1;
1007 break;
1008 case H_SPEED_10G_F:
1009 port->port_speed = EHEA_SPEED_10G;
1010 port->full_duplex = 1;
1011 break;
1012 default:
1013 port->port_speed = 0;
1014 port->full_duplex = 0;
1015 break;
1016 }
1017
e919b593 1018 port->autoneg = 1;
18604c54 1019 port->num_mcs = cb0->num_default_qps;
e919b593 1020
7a291083 1021 /* Number of default QPs */
18604c54
JBT		 1022 if (use_mcs)
1023 port->num_def_qps = cb0->num_default_qps;
1024 else
1025 port->num_def_qps = 1;
7a291083
JBT		 1026
1027 if (!port->num_def_qps) {
1028 ret = -EINVAL;
1029 goto out_free;
1030 }
1031
18604c54
JBT		 1032 port->num_tx_qps = num_tx_qps;
1033
1034 if (port->num_def_qps >= port->num_tx_qps)
7a291083
JBT		 1035 port->num_add_tx_qps = 0;
1036 else
18604c54 1037 port->num_add_tx_qps = port->num_tx_qps - port->num_def_qps;
7a291083
JBT		 1038
1039 ret = 0;
1040out_free:
1041 if (ret || netif_msg_probe(port))
1042 ehea_dump(cb0, sizeof(*cb0), "ehea_sense_port_attr");
3faf2693 1043 free_page((unsigned long)cb0);
7a291083
JBT		 1044out:
1045 return ret;
1046}
1047
1048int ehea_set_portspeed(struct ehea_port *port, u32 port_speed)
1049{
1050 struct hcp_ehea_port_cb4 *cb4;
1051 u64 hret;
1052 int ret = 0;
1053
3faf2693 1054 cb4 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083
JBT		 1055 if (!cb4) {
1056 ehea_error("no mem for cb4");
1057 ret = -ENOMEM;
1058 goto out;
1059 }
1060
1061 cb4->port_speed = port_speed;
1062
1063 netif_carrier_off(port->netdev);
1064
1065 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1066 port->logical_port_id,
1067 H_PORT_CB4, H_PORT_CB4_SPEED, cb4);
1068 if (hret == H_SUCCESS) {
1069 port->autoneg = port_speed == EHEA_SPEED_AUTONEG ? 1 : 0;
1070
1071 hret = ehea_h_query_ehea_port(port->adapter->handle,
1072 port->logical_port_id,
1073 H_PORT_CB4, H_PORT_CB4_SPEED,
1074 cb4);
1075 if (hret == H_SUCCESS) {
1076 switch (cb4->port_speed) {
1077 case H_SPEED_10M_H:
1078 port->port_speed = EHEA_SPEED_10M;
1079 port->full_duplex = 0;
1080 break;
1081 case H_SPEED_10M_F:
1082 port->port_speed = EHEA_SPEED_10M;
1083 port->full_duplex = 1;
1084 break;
1085 case H_SPEED_100M_H:
1086 port->port_speed = EHEA_SPEED_100M;
1087 port->full_duplex = 0;
1088 break;
1089 case H_SPEED_100M_F:
1090 port->port_speed = EHEA_SPEED_100M;
1091 port->full_duplex = 1;
1092 break;
1093 case H_SPEED_1G_F:
1094 port->port_speed = EHEA_SPEED_1G;
1095 port->full_duplex = 1;
1096 break;
1097 case H_SPEED_10G_F:
1098 port->port_speed = EHEA_SPEED_10G;
1099 port->full_duplex = 1;
1100 break;
1101 default:
1102 port->port_speed = 0;
1103 port->full_duplex = 0;
1104 break;
1105 }
1106 } else {
1107 ehea_error("Failed sensing port speed");
1108 ret = -EIO;
1109 }
1110 } else {
1111 if (hret == H_AUTHORITY) {
7674a588 1112 ehea_info("Hypervisor denied setting port speed");
7a291083
JBT		 1113 ret = -EPERM;
1114 } else {
1115 ret = -EIO;
1116 ehea_error("Failed setting port speed");
1117 }
1118 }
8759cf76
JBT		 1119 if (!prop_carrier_state || (port->phy_link == EHEA_PHY_LINK_UP))
1120 netif_carrier_on(port->netdev);
1121
3faf2693 1122 free_page((unsigned long)cb4);
7a291083
JBT		 1123out:
1124 return ret;
1125}
1126
1127static void ehea_parse_eqe(struct ehea_adapter *adapter, u64 eqe)
1128{
1129 int ret;
1130 u8 ec;
1131 u8 portnum;
1132 struct ehea_port *port;
1133
1134 ec = EHEA_BMASK_GET(NEQE_EVENT_CODE, eqe);
1135 portnum = EHEA_BMASK_GET(NEQE_PORTNUM, eqe);
1136 port = ehea_get_port(adapter, portnum);
1137
1138 switch (ec) {
1139 case EHEA_EC_PORTSTATE_CHG: /* port state change */
1140
1141 if (!port) {
1142 ehea_error("unknown portnum %x", portnum);
1143 break;
1144 }
1145
1146 if (EHEA_BMASK_GET(NEQE_PORT_UP, eqe)) {
1147 if (!netif_carrier_ok(port->netdev)) {
1e1675cc 1148 ret = ehea_sense_port_attr(port);
7a291083
JBT		 1149 if (ret) {
1150 ehea_error("failed resensing port "
1151 "attributes");
1152 break;
1153 }
1154
1155 if (netif_msg_link(port))
1156 ehea_info("%s: Logical port up: %dMbps "
1157 "%s Duplex",
1158 port->netdev->name,
1159 port->port_speed,
1160 port->full_duplex ==
1161 1 ? "Full" : "Half");
1162
1163 netif_carrier_on(port->netdev);
1164 netif_wake_queue(port->netdev);
1165 }
1166 } else
1167 if (netif_carrier_ok(port->netdev)) {
1168 if (netif_msg_link(port))
1169 ehea_info("%s: Logical port down",
1170 port->netdev->name);
1171 netif_carrier_off(port->netdev);
1172 netif_stop_queue(port->netdev);
1173 }
1174
1175 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PORT_UP, eqe)) {
8759cf76 1176 port->phy_link = EHEA_PHY_LINK_UP;
7a291083
JBT		 1177 if (netif_msg_link(port))
1178 ehea_info("%s: Physical port up",
1179 port->netdev->name);
8759cf76
JBT		 1180 if (prop_carrier_state)
1181 netif_carrier_on(port->netdev);
7a291083 1182 } else {
8759cf76 1183 port->phy_link = EHEA_PHY_LINK_DOWN;
7a291083
JBT		 1184 if (netif_msg_link(port))
1185 ehea_info("%s: Physical port down",
1186 port->netdev->name);
8759cf76
JBT		 1187 if (prop_carrier_state)
1188 netif_carrier_off(port->netdev);
7a291083
JBT		 1189 }
1190
1191 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PRIMARY, eqe))
1192 ehea_info("External switch port is primary port");
1193 else
1194 ehea_info("External switch port is backup port");
1195
1196 break;
1197 case EHEA_EC_ADAPTER_MALFUNC:
1198 ehea_error("Adapter malfunction");
1199 break;
1200 case EHEA_EC_PORT_MALFUNC:
1201 ehea_info("Port malfunction: Device: %s", port->netdev->name);
1202 netif_carrier_off(port->netdev);
1203 netif_stop_queue(port->netdev);
1204 break;
1205 default:
a1c5a893 1206 ehea_error("unknown event code %x, eqe=0x%llX", ec, eqe);
7a291083
JBT		 1207 break;
1208 }
1209}
1210
1211static void ehea_neq_tasklet(unsigned long data)
1212{
508d2b5d 1213 struct ehea_adapter *adapter = (struct ehea_adapter *)data;
7a291083
JBT		 1214 struct ehea_eqe *eqe;
1215 u64 event_mask;
1216
1217 eqe = ehea_poll_eq(adapter->neq);
1218 ehea_debug("eqe=%p", eqe);
1219
1220 while (eqe) {
1221 ehea_debug("*eqe=%lx", eqe->entry);
1222 ehea_parse_eqe(adapter, eqe->entry);
1223 eqe = ehea_poll_eq(adapter->neq);
1224 ehea_debug("next eqe=%p", eqe);
1225 }
1226
1227 event_mask = EHEA_BMASK_SET(NELR_PORTSTATE_CHG, 1)
1228 | EHEA_BMASK_SET(NELR_ADAPTER_MALFUNC, 1)
1229 | EHEA_BMASK_SET(NELR_PORT_MALFUNC, 1);
1230
1231 ehea_h_reset_events(adapter->handle,
1232 adapter->neq->fw_handle, event_mask);
1233}
1234
7d12e780 1235static irqreturn_t ehea_interrupt_neq(int irq, void *param)
7a291083
JBT		 1236{
1237 struct ehea_adapter *adapter = param;
1238 tasklet_hi_schedule(&adapter->neq_tasklet);
1239 return IRQ_HANDLED;
1240}
1241
1242
1243static int ehea_fill_port_res(struct ehea_port_res *pr)
1244{
1245 int ret;
1246 struct ehea_qp_init_attr *init_attr = &pr->qp->init_attr;
1247
e2878806
TK		 1248 ehea_init_fill_rq1(pr, init_attr->act_nr_rwqes_rq1
1249 - init_attr->act_nr_rwqes_rq2
1250 - init_attr->act_nr_rwqes_rq3 - 1);
7a291083 1251
e2878806 1252 ret = ehea_refill_rq2(pr, init_attr->act_nr_rwqes_rq2 - 1);
7a291083
JBT		 1253
1254 ret |= ehea_refill_rq3(pr, init_attr->act_nr_rwqes_rq3 - 1);
1255
1256 return ret;
1257}
1258
1259static int ehea_reg_interrupts(struct net_device *dev)
1260{
1261 struct ehea_port *port = netdev_priv(dev);
1262 struct ehea_port_res *pr;
1263 int i, ret;
1264
7a291083
JBT		 1265
1266 snprintf(port->int_aff_name, EHEA_IRQ_NAME_SIZE - 1, "%s-aff",
1267 dev->name);
1268
6b08f3ae 1269 ret = ibmebus_request_irq(port->qp_eq->attr.ist1,
7a291083 1270 ehea_qp_aff_irq_handler,
38515e90 1271 IRQF_DISABLED, port->int_aff_name, port);
7a291083
JBT		 1272 if (ret) {
1273 ehea_error("failed registering irq for qp_aff_irq_handler:"
1274 "ist=%X", port->qp_eq->attr.ist1);
1275 goto out_free_qpeq;
1276 }
1277
1278 if (netif_msg_ifup(port))
1279 ehea_info("irq_handle 0x%X for function qp_aff_irq_handler "
1280 "registered", port->qp_eq->attr.ist1);
1281
18604c54 1282
7a291083
JBT		 1283 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
1284 pr = &port->port_res[i];
1285 snprintf(pr->int_send_name, EHEA_IRQ_NAME_SIZE - 1,
18604c54 1286 "%s-queue%d", dev->name, i);
6b08f3ae 1287 ret = ibmebus_request_irq(pr->eq->attr.ist1,
18604c54 1288 ehea_recv_irq_handler,
38515e90 1289 IRQF_DISABLED, pr->int_send_name,
7a291083
JBT		 1290 pr);
1291 if (ret) {
18604c54 1292 ehea_error("failed registering irq for ehea_queue "
7a291083 1293 "port_res_nr:%d, ist=%X", i,
18604c54 1294 pr->eq->attr.ist1);
7a291083
JBT		 1295 goto out_free_req;
1296 }
1297 if (netif_msg_ifup(port))
18604c54
JBT		 1298 ehea_info("irq_handle 0x%X for function ehea_queue_int "
1299 "%d registered", pr->eq->attr.ist1, i);
7a291083
JBT		 1300 }
1301out:
1302 return ret;
1303
18604c54 1304
7a291083
JBT		 1305out_free_req:
1306 while (--i >= 0) {
18604c54 1307 u32 ist = port->port_res[i].eq->attr.ist1;
6b08f3ae 1308 ibmebus_free_irq(ist, &port->port_res[i]);
7a291083 1309 }
18604c54 1310
7a291083 1311out_free_qpeq:
6b08f3ae 1312 ibmebus_free_irq(port->qp_eq->attr.ist1, port);
7a291083 1313 i = port->num_def_qps;
18604c54 1314
7a291083 1315 goto out;
18604c54 1316
7a291083
JBT		 1317}
1318
1319static void ehea_free_interrupts(struct net_device *dev)
1320{
1321 struct ehea_port *port = netdev_priv(dev);
1322 struct ehea_port_res *pr;
1323 int i;
1324
1325 /* send */
18604c54 1326
7a291083
JBT		 1327 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
1328 pr = &port->port_res[i];
6b08f3ae 1329 ibmebus_free_irq(pr->eq->attr.ist1, pr);
7a291083
JBT		 1330 if (netif_msg_intr(port))
1331 ehea_info("free send irq for res %d with handle 0x%X",
18604c54 1332 i, pr->eq->attr.ist1);
7a291083
JBT		 1333 }
1334
1335 /* associated events */
6b08f3ae 1336 ibmebus_free_irq(port->qp_eq->attr.ist1, port);
7a291083
JBT		 1337 if (netif_msg_intr(port))
1338 ehea_info("associated event interrupt for handle 0x%X freed",
1339 port->qp_eq->attr.ist1);
1340}
1341
1342static int ehea_configure_port(struct ehea_port *port)
1343{
1344 int ret, i;
1345 u64 hret, mask;
1346 struct hcp_ehea_port_cb0 *cb0;
1347
1348 ret = -ENOMEM;
3faf2693 1349 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083
JBT		 1350 if (!cb0)
1351 goto out;
1352
1353 cb0->port_rc = EHEA_BMASK_SET(PXLY_RC_VALID, 1)
1354 | EHEA_BMASK_SET(PXLY_RC_IP_CHKSUM, 1)
1355 | EHEA_BMASK_SET(PXLY_RC_TCP_UDP_CHKSUM, 1)
1356 | EHEA_BMASK_SET(PXLY_RC_VLAN_XTRACT, 1)
1357 | EHEA_BMASK_SET(PXLY_RC_VLAN_TAG_FILTER,
1358 PXLY_RC_VLAN_FILTER)
1359 | EHEA_BMASK_SET(PXLY_RC_JUMBO_FRAME, 1);
1360
18604c54
JBT		 1361 for (i = 0; i < port->num_mcs; i++)
1362 if (use_mcs)
1363 cb0->default_qpn_arr[i] =
1364 port->port_res[i].qp->init_attr.qp_nr;
1365 else
1366 cb0->default_qpn_arr[i] =
1367 port->port_res[0].qp->init_attr.qp_nr;
e542aa6b 1368
7a291083
JBT		 1369 if (netif_msg_ifup(port))
1370 ehea_dump(cb0, sizeof(*cb0), "ehea_configure_port");
1371
1372 mask = EHEA_BMASK_SET(H_PORT_CB0_PRC, 1)
1373 | EHEA_BMASK_SET(H_PORT_CB0_DEFQPNARRAY, 1);
1374
1375 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1376 port->logical_port_id,
1377 H_PORT_CB0, mask, cb0);
1378 ret = -EIO;
1379 if (hret != H_SUCCESS)
1380 goto out_free;
1381
1382 ret = 0;
1383
1384out_free:
3faf2693 1385 free_page((unsigned long)cb0);
7a291083
JBT		 1386out:
1387 return ret;
1388}
1389
e542aa6b 1390int ehea_gen_smrs(struct ehea_port_res *pr)
7a291083 1391{
e542aa6b 1392 int ret;
7a291083
JBT		 1393 struct ehea_adapter *adapter = pr->port->adapter;
1394
e542aa6b
JBT		 1395 ret = ehea_gen_smr(adapter, &adapter->mr, &pr->send_mr);
1396 if (ret)
7a291083
JBT		 1397 goto out;
1398
e542aa6b
JBT		 1399 ret = ehea_gen_smr(adapter, &adapter->mr, &pr->recv_mr);
1400 if (ret)
1401 goto out_free;
7a291083
JBT		 1402
1403 return 0;
1404
e542aa6b
JBT		 1405out_free:
1406 ehea_rem_mr(&pr->send_mr);
7a291083 1407out:
e542aa6b 1408 ehea_error("Generating SMRS failed\n");
7a291083
JBT		 1409 return -EIO;
1410}
1411
e542aa6b 1412int ehea_rem_smrs(struct ehea_port_res *pr)
7a291083 1413{
8e95a202
JP		 1414 if ((ehea_rem_mr(&pr->send_mr)) ||
1415 (ehea_rem_mr(&pr->recv_mr)))
e542aa6b
JBT		 1416 return -EIO;
1417 else
1418 return 0;
7a291083
JBT		 1419}
1420
1421static int ehea_init_q_skba(struct ehea_q_skb_arr *q_skba, int max_q_entries)
1422{
508d2b5d 1423 int arr_size = sizeof(void *) * max_q_entries;
7a291083
JBT		 1424
1425 q_skba->arr = vmalloc(arr_size);
1426 if (!q_skba->arr)
1427 return -ENOMEM;
1428
1429 memset(q_skba->arr, 0, arr_size);
1430
1431 q_skba->len = max_q_entries;
1432 q_skba->index = 0;
1433 q_skba->os_skbs = 0;
1434
1435 return 0;
1436}
1437
1438static int ehea_init_port_res(struct ehea_port *port, struct ehea_port_res *pr,
1439 struct port_res_cfg *pr_cfg, int queue_token)
1440{
1441 struct ehea_adapter *adapter = port->adapter;
1442 enum ehea_eq_type eq_type = EHEA_EQ;
1443 struct ehea_qp_init_attr *init_attr = NULL;
1444 int ret = -EIO;
1445
1446 memset(pr, 0, sizeof(struct ehea_port_res));
1447
1448 pr->port = port;
7a291083
JBT		 1449 spin_lock_init(&pr->xmit_lock);
1450 spin_lock_init(&pr->netif_queue);
1451
18604c54
JBT		 1452 pr->eq = ehea_create_eq(adapter, eq_type, EHEA_MAX_ENTRIES_EQ, 0);
1453 if (!pr->eq) {
1454 ehea_error("create_eq failed (eq)");
7a291083
JBT		 1455 goto out_free;
1456 }
1457
1458 pr->recv_cq = ehea_create_cq(adapter, pr_cfg->max_entries_rcq,
18604c54 1459 pr->eq->fw_handle,
7a291083
JBT		 1460 port->logical_port_id);
1461 if (!pr->recv_cq) {
1462 ehea_error("create_cq failed (cq_recv)");
1463 goto out_free;
1464 }
1465
1466 pr->send_cq = ehea_create_cq(adapter, pr_cfg->max_entries_scq,
18604c54 1467 pr->eq->fw_handle,
7a291083
JBT		 1468 port->logical_port_id);
1469 if (!pr->send_cq) {
1470 ehea_error("create_cq failed (cq_send)");
1471 goto out_free;
1472 }
1473
1474 if (netif_msg_ifup(port))
1475 ehea_info("Send CQ: act_nr_cqes=%d, Recv CQ: act_nr_cqes=%d",
1476 pr->send_cq->attr.act_nr_of_cqes,
1477 pr->recv_cq->attr.act_nr_of_cqes);
1478
1479 init_attr = kzalloc(sizeof(*init_attr), GFP_KERNEL);
1480 if (!init_attr) {
1481 ret = -ENOMEM;
1482 ehea_error("no mem for ehea_qp_init_attr");
1483 goto out_free;
1484 }
1485
1486 init_attr->low_lat_rq1 = 1;
1487 init_attr->signalingtype = 1; /* generate CQE if specified in WQE */
1488 init_attr->rq_count = 3;
1489 init_attr->qp_token = queue_token;
1490 init_attr->max_nr_send_wqes = pr_cfg->max_entries_sq;
1491 init_attr->max_nr_rwqes_rq1 = pr_cfg->max_entries_rq1;
1492 init_attr->max_nr_rwqes_rq2 = pr_cfg->max_entries_rq2;
1493 init_attr->max_nr_rwqes_rq3 = pr_cfg->max_entries_rq3;
1494 init_attr->wqe_size_enc_sq = EHEA_SG_SQ;
1495 init_attr->wqe_size_enc_rq1 = EHEA_SG_RQ1;
1496 init_attr->wqe_size_enc_rq2 = EHEA_SG_RQ2;
1497 init_attr->wqe_size_enc_rq3 = EHEA_SG_RQ3;
1498 init_attr->rq2_threshold = EHEA_RQ2_THRESHOLD;
1499 init_attr->rq3_threshold = EHEA_RQ3_THRESHOLD;
1500 init_attr->port_nr = port->logical_port_id;
1501 init_attr->send_cq_handle = pr->send_cq->fw_handle;
1502 init_attr->recv_cq_handle = pr->recv_cq->fw_handle;
1503 init_attr->aff_eq_handle = port->qp_eq->fw_handle;
1504
1505 pr->qp = ehea_create_qp(adapter, adapter->pd, init_attr);
1506 if (!pr->qp) {
1507 ehea_error("create_qp failed");
1508 ret = -EIO;
1509 goto out_free;
1510 }
1511
1512 if (netif_msg_ifup(port))
1513 ehea_info("QP: qp_nr=%d\n act_nr_snd_wqe=%d\n nr_rwqe_rq1=%d\n "
1514 "nr_rwqe_rq2=%d\n nr_rwqe_rq3=%d", init_attr->qp_nr,
1515 init_attr->act_nr_send_wqes,
1516 init_attr->act_nr_rwqes_rq1,
1517 init_attr->act_nr_rwqes_rq2,
1518 init_attr->act_nr_rwqes_rq3);
1519
44fb3126
TK		 1520 pr->sq_skba_size = init_attr->act_nr_send_wqes + 1;
1521
1522 ret = ehea_init_q_skba(&pr->sq_skba, pr->sq_skba_size);
7a291083
JBT		 1523 ret |= ehea_init_q_skba(&pr->rq1_skba, init_attr->act_nr_rwqes_rq1 + 1);
1524 ret |= ehea_init_q_skba(&pr->rq2_skba, init_attr->act_nr_rwqes_rq2 + 1);
1525 ret |= ehea_init_q_skba(&pr->rq3_skba, init_attr->act_nr_rwqes_rq3 + 1);
1526 if (ret)
1527 goto out_free;
1528
1529 pr->swqe_refill_th = init_attr->act_nr_send_wqes / 10;
1530 if (ehea_gen_smrs(pr) != 0) {
1531 ret = -EIO;
1532 goto out_free;
1533 }
18604c54 1534
7a291083
JBT		 1535 atomic_set(&pr->swqe_avail, init_attr->act_nr_send_wqes - 1);
1536
1537 kfree(init_attr);
18604c54 1538
bea3348e 1539 netif_napi_add(pr->port->netdev, &pr->napi, ehea_poll, 64);
18604c54 1540
d4dc4ec9
JBT		 1541 pr->lro_mgr.max_aggr = pr->port->lro_max_aggr;
1542 pr->lro_mgr.max_desc = MAX_LRO_DESCRIPTORS;
1543 pr->lro_mgr.lro_arr = pr->lro_desc;
1544 pr->lro_mgr.get_skb_header = get_skb_hdr;
1545 pr->lro_mgr.features = LRO_F_NAPI | LRO_F_EXTRACT_VLAN_ID;
1546 pr->lro_mgr.dev = port->netdev;
1547 pr->lro_mgr.ip_summed = CHECKSUM_UNNECESSARY;
1548 pr->lro_mgr.ip_summed_aggr = CHECKSUM_UNNECESSARY;
1549
7a291083
JBT		 1550 ret = 0;
1551 goto out;
1552
1553out_free:
1554 kfree(init_attr);
1555 vfree(pr->sq_skba.arr);
1556 vfree(pr->rq1_skba.arr);
1557 vfree(pr->rq2_skba.arr);
1558 vfree(pr->rq3_skba.arr);
1559 ehea_destroy_qp(pr->qp);
1560 ehea_destroy_cq(pr->send_cq);
1561 ehea_destroy_cq(pr->recv_cq);
18604c54 1562 ehea_destroy_eq(pr->eq);
7a291083
JBT		 1563out:
1564 return ret;
1565}
1566
1567static int ehea_clean_portres(struct ehea_port *port, struct ehea_port_res *pr)
1568{
1569 int ret, i;
1570
357eb46d
HH		 1571 if (pr->qp)
1572 netif_napi_del(&pr->napi);
1573
7a291083
JBT		 1574 ret = ehea_destroy_qp(pr->qp);
1575
1576 if (!ret) {
1577 ehea_destroy_cq(pr->send_cq);
1578 ehea_destroy_cq(pr->recv_cq);
18604c54 1579 ehea_destroy_eq(pr->eq);
7a291083
JBT		 1580
1581 for (i = 0; i < pr->rq1_skba.len; i++)
1582 if (pr->rq1_skba.arr[i])
1583 dev_kfree_skb(pr->rq1_skba.arr[i]);
1584
1585 for (i = 0; i < pr->rq2_skba.len; i++)
1586 if (pr->rq2_skba.arr[i])
1587 dev_kfree_skb(pr->rq2_skba.arr[i]);
1588
1589 for (i = 0; i < pr->rq3_skba.len; i++)
1590 if (pr->rq3_skba.arr[i])
1591 dev_kfree_skb(pr->rq3_skba.arr[i]);
1592
1593 for (i = 0; i < pr->sq_skba.len; i++)
1594 if (pr->sq_skba.arr[i])
1595 dev_kfree_skb(pr->sq_skba.arr[i]);
1596
1597 vfree(pr->rq1_skba.arr);
1598 vfree(pr->rq2_skba.arr);
1599 vfree(pr->rq3_skba.arr);
1600 vfree(pr->sq_skba.arr);
1601 ret = ehea_rem_smrs(pr);
1602 }
1603 return ret;
1604}
1605
1606/*
1607 * The write_* functions store information in swqe which is used by
1608 * the hardware to calculate the ip/tcp/udp checksum
1609 */
1610
1611static inline void write_ip_start_end(struct ehea_swqe *swqe,
1612 const struct sk_buff *skb)
1613{
eddc9ec5 1614 swqe->ip_start = skb_network_offset(skb);
c9bdd4b5 1615 swqe->ip_end = (u8)(swqe->ip_start + ip_hdrlen(skb) - 1);
7a291083
JBT		 1616}
1617
1618static inline void write_tcp_offset_end(struct ehea_swqe *swqe,
1619 const struct sk_buff *skb)
1620{
1621 swqe->tcp_offset =
1622 (u8)(swqe->ip_end + 1 + offsetof(struct tcphdr, check));
1623
1624 swqe->tcp_end = (u16)skb->len - 1;
1625}
1626
1627static inline void write_udp_offset_end(struct ehea_swqe *swqe,
1628 const struct sk_buff *skb)
1629{
1630 swqe->tcp_offset =
1631 (u8)(swqe->ip_end + 1 + offsetof(struct udphdr, check));
1632
1633 swqe->tcp_end = (u16)skb->len - 1;
1634}
1635
1636
1637static void write_swqe2_TSO(struct sk_buff *skb,
1638 struct ehea_swqe *swqe, u32 lkey)
1639{
1640 struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry;
1641 u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0];
e743d313 1642 int skb_data_size = skb_headlen(skb);
7a291083 1643 int headersize;
7a291083
JBT		 1644
1645 /* Packet is TCP with TSO enabled */
1646 swqe->tx_control |= EHEA_SWQE_TSO;
1647 swqe->mss = skb_shinfo(skb)->gso_size;
1648 /* copy only eth/ip/tcp headers to immediate data and
1649 * the rest of skb->data to sg1entry
1650 */
ab6a5bb6 1651 headersize = ETH_HLEN + ip_hdrlen(skb) + tcp_hdrlen(skb);
7a291083 1652
e743d313 1653 skb_data_size = skb_headlen(skb);
7a291083
JBT		 1654
1655 if (skb_data_size >= headersize) {
1656 /* copy immediate data */
d626f62b 1657 skb_copy_from_linear_data(skb, imm_data, headersize);
7a291083
JBT		 1658 swqe->immediate_data_length = headersize;
1659
1660 if (skb_data_size > headersize) {
1661 /* set sg1entry data */
1662 sg1entry->l_key = lkey;
1663 sg1entry->len = skb_data_size - headersize;
44a5b3d5
TK		 1664 sg1entry->vaddr =
1665 ehea_map_vaddr(skb->data + headersize);
7a291083
JBT		 1666 swqe->descriptors++;
1667 }
1668 } else
1669 ehea_error("cannot handle fragmented headers");
1670}
1671
1672static void write_swqe2_nonTSO(struct sk_buff *skb,
1673 struct ehea_swqe *swqe, u32 lkey)
1674{
e743d313 1675 int skb_data_size = skb_headlen(skb);
7a291083
JBT		 1676 u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0];
1677 struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry;
7a291083
JBT		 1678
1679 /* Packet is any nonTSO type
1680 *
1681 * Copy as much as possible skb->data to immediate data and
1682 * the rest to sg1entry
1683 */
1684 if (skb_data_size >= SWQE2_MAX_IMM) {
1685 /* copy immediate data */
d626f62b 1686 skb_copy_from_linear_data(skb, imm_data, SWQE2_MAX_IMM);
7a291083
JBT		 1687
1688 swqe->immediate_data_length = SWQE2_MAX_IMM;
1689
1690 if (skb_data_size > SWQE2_MAX_IMM) {
1691 /* copy sg1entry data */
1692 sg1entry->l_key = lkey;
1693 sg1entry->len = skb_data_size - SWQE2_MAX_IMM;
44a5b3d5
TK		 1694 sg1entry->vaddr =
1695 ehea_map_vaddr(skb->data + SWQE2_MAX_IMM);
7a291083
JBT		 1696 swqe->descriptors++;
1697 }
1698 } else {
d626f62b 1699 skb_copy_from_linear_data(skb, imm_data, skb_data_size);
7a291083
JBT		 1700 swqe->immediate_data_length = skb_data_size;
1701 }
1702}
1703
1704static inline void write_swqe2_data(struct sk_buff *skb, struct net_device *dev,
1705 struct ehea_swqe *swqe, u32 lkey)
1706{
1707 struct ehea_vsgentry *sg_list, *sg1entry, *sgentry;
1708 skb_frag_t *frag;
1709 int nfrags, sg1entry_contains_frag_data, i;
7a291083
JBT		 1710
1711 nfrags = skb_shinfo(skb)->nr_frags;
1712 sg1entry = &swqe->u.immdata_desc.sg_entry;
508d2b5d 1713 sg_list = (struct ehea_vsgentry *)&swqe->u.immdata_desc.sg_list;
7a291083
JBT		 1714 swqe->descriptors = 0;
1715 sg1entry_contains_frag_data = 0;
1716
1717 if ((dev->features & NETIF_F_TSO) && skb_shinfo(skb)->gso_size)
1718 write_swqe2_TSO(skb, swqe, lkey);
1719 else
1720 write_swqe2_nonTSO(skb, swqe, lkey);
1721
1722 /* write descriptors */
1723 if (nfrags > 0) {
1724 if (swqe->descriptors == 0) {
1725 /* sg1entry not yet used */
1726 frag = &skb_shinfo(skb)->frags[0];
1727
1728 /* copy sg1entry data */
1729 sg1entry->l_key = lkey;
1730 sg1entry->len = frag->size;
44a5b3d5
TK		 1731 sg1entry->vaddr =
1732 ehea_map_vaddr(page_address(frag->page)
1733 + frag->page_offset);
7a291083
JBT		 1734 swqe->descriptors++;
1735 sg1entry_contains_frag_data = 1;
1736 }
1737
1738 for (i = sg1entry_contains_frag_data; i < nfrags; i++) {
1739
1740 frag = &skb_shinfo(skb)->frags[i];
1741 sgentry = &sg_list[i - sg1entry_contains_frag_data];
1742
1743 sgentry->l_key = lkey;
1744 sgentry->len = frag->size;
44a5b3d5
TK		 1745 sgentry->vaddr =
1746 ehea_map_vaddr(page_address(frag->page)
1747 + frag->page_offset);
7a291083
JBT		 1748 swqe->descriptors++;
1749 }
1750 }
1751}
1752
1753static int ehea_broadcast_reg_helper(struct ehea_port *port, u32 hcallid)
1754{
1755 int ret = 0;
1756 u64 hret;
1757 u8 reg_type;
1758
1759 /* De/Register untagged packets */
1760 reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_UNTAGGED;
1761 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1762 port->logical_port_id,
1763 reg_type, port->mac_addr, 0, hcallid);
1764 if (hret != H_SUCCESS) {
f9e29228 1765 ehea_error("%sregistering bc address failed (tagged)",
508d2b5d 1766 hcallid == H_REG_BCMC ? "" : "de");
7a291083
JBT		 1767 ret = -EIO;
1768 goto out_herr;
1769 }
1770
1771 /* De/Register VLAN packets */
1772 reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_VLANID_ALL;
1773 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1774 port->logical_port_id,
1775 reg_type, port->mac_addr, 0, hcallid);
1776 if (hret != H_SUCCESS) {
f9e29228
TK		 1777 ehea_error("%sregistering bc address failed (vlan)",
1778 hcallid == H_REG_BCMC ? "" : "de");
7a291083
JBT		 1779 ret = -EIO;
1780 }
1781out_herr:
1782 return ret;
1783}
1784
1785static int ehea_set_mac_addr(struct net_device *dev, void *sa)
1786{
1787 struct ehea_port *port = netdev_priv(dev);
1788 struct sockaddr *mac_addr = sa;
1789 struct hcp_ehea_port_cb0 *cb0;
1790 int ret;
1791 u64 hret;
1792
1793 if (!is_valid_ether_addr(mac_addr->sa_data)) {
1794 ret = -EADDRNOTAVAIL;
1795 goto out;
1796 }
1797
3faf2693 1798 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083
JBT		 1799 if (!cb0) {
1800 ehea_error("no mem for cb0");
1801 ret = -ENOMEM;
1802 goto out;
1803 }
1804
1805 memcpy(&(cb0->port_mac_addr), &(mac_addr->sa_data[0]), ETH_ALEN);
1806
1807 cb0->port_mac_addr = cb0->port_mac_addr >> 16;
1808
1809 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1810 port->logical_port_id, H_PORT_CB0,
1811 EHEA_BMASK_SET(H_PORT_CB0_MAC, 1), cb0);
1812 if (hret != H_SUCCESS) {
1813 ret = -EIO;
1814 goto out_free;
1815 }
1816
1817 memcpy(dev->dev_addr, mac_addr->sa_data, dev->addr_len);
1818
1819 /* Deregister old MAC in pHYP */
00aaea2f
JBT		 1820 if (port->state == EHEA_PORT_UP) {
1821 ret = ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
1822 if (ret)
1823 goto out_upregs;
1824 }
7a291083
JBT		 1825
1826 port->mac_addr = cb0->port_mac_addr << 16;
1827
1828 /* Register new MAC in pHYP */
00aaea2f
JBT		 1829 if (port->state == EHEA_PORT_UP) {
1830 ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
1831 if (ret)
1832 goto out_upregs;
1833 }
7a291083
JBT		 1834
1835 ret = 0;
21eee2dd
TK		 1836
1837out_upregs:
1838 ehea_update_bcmc_registrations();
7a291083 1839out_free:
3faf2693 1840 free_page((unsigned long)cb0);
7a291083
JBT		 1841out:
1842 return ret;
1843}
1844
1845static void ehea_promiscuous_error(u64 hret, int enable)
1846{
7674a588
TK		 1847 if (hret == H_AUTHORITY)
1848 ehea_info("Hypervisor denied %sabling promiscuous mode",
1849 enable == 1 ? "en" : "dis");
1850 else
1851 ehea_error("failed %sabling promiscuous mode",
1852 enable == 1 ? "en" : "dis");
7a291083
JBT		 1853}
1854
1855static void ehea_promiscuous(struct net_device *dev, int enable)
1856{
1857 struct ehea_port *port = netdev_priv(dev);
1858 struct hcp_ehea_port_cb7 *cb7;
1859 u64 hret;
1860
1861 if ((enable && port->promisc) || (!enable && !port->promisc))
1862 return;
1863
3faf2693 1864 cb7 = (void *)get_zeroed_page(GFP_ATOMIC);
7a291083
JBT		 1865 if (!cb7) {
1866 ehea_error("no mem for cb7");
1867 goto out;
1868 }
1869
1870 /* Modify Pxs_DUCQPN in CB7 */
1871 cb7->def_uc_qpn = enable == 1 ? port->port_res[0].qp->fw_handle : 0;
1872
1873 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1874 port->logical_port_id,
1875 H_PORT_CB7, H_PORT_CB7_DUCQPN, cb7);
1876 if (hret) {
1877 ehea_promiscuous_error(hret, enable);
1878 goto out;
1879 }
1880
1881 port->promisc = enable;
1882out:
3faf2693 1883 free_page((unsigned long)cb7);
7a291083
JBT		 1884 return;
1885}
1886
1887static u64 ehea_multicast_reg_helper(struct ehea_port *port, u64 mc_mac_addr,
1888 u32 hcallid)
1889{
1890 u64 hret;
1891 u8 reg_type;
1892
1893 reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST
1894 | EHEA_BCMC_UNTAGGED;
1895
1896 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1897 port->logical_port_id,
1898 reg_type, mc_mac_addr, 0, hcallid);
1899 if (hret)
1900 goto out;
1901
1902 reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST
1903 | EHEA_BCMC_VLANID_ALL;
1904
1905 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1906 port->logical_port_id,
1907 reg_type, mc_mac_addr, 0, hcallid);
1908out:
1909 return hret;
1910}
1911
1912static int ehea_drop_multicast_list(struct net_device *dev)
1913{
1914 struct ehea_port *port = netdev_priv(dev);
1915 struct ehea_mc_list *mc_entry = port->mc_list;
1916 struct list_head *pos;
1917 struct list_head *temp;
1918 int ret = 0;
1919 u64 hret;
1920
1921 list_for_each_safe(pos, temp, &(port->mc_list->list)) {
1922 mc_entry = list_entry(pos, struct ehea_mc_list, list);
1923
1924 hret = ehea_multicast_reg_helper(port, mc_entry->macaddr,
1925 H_DEREG_BCMC);
1926 if (hret) {
1927 ehea_error("failed deregistering mcast MAC");
1928 ret = -EIO;
1929 }
1930
1931 list_del(pos);
1932 kfree(mc_entry);
1933 }
1934 return ret;
1935}
1936
1937static void ehea_allmulti(struct net_device *dev, int enable)
1938{
1939 struct ehea_port *port = netdev_priv(dev);
1940 u64 hret;
1941
1942 if (!port->allmulti) {
1943 if (enable) {
1944 /* Enable ALLMULTI */
1945 ehea_drop_multicast_list(dev);
1946 hret = ehea_multicast_reg_helper(port, 0, H_REG_BCMC);
1947 if (!hret)
1948 port->allmulti = 1;
1949 else
1950 ehea_error("failed enabling IFF_ALLMULTI");
1951 }
1952 } else
1953 if (!enable) {
1954 /* Disable ALLMULTI */
1955 hret = ehea_multicast_reg_helper(port, 0, H_DEREG_BCMC);
1956 if (!hret)
1957 port->allmulti = 0;
1958 else
1959 ehea_error("failed disabling IFF_ALLMULTI");
1960 }
1961}
1962
508d2b5d 1963static void ehea_add_multicast_entry(struct ehea_port *port, u8 *mc_mac_addr)
7a291083
JBT		 1964{
1965 struct ehea_mc_list *ehea_mcl_entry;
1966 u64 hret;
1967
1e1675cc 1968 ehea_mcl_entry = kzalloc(sizeof(*ehea_mcl_entry), GFP_ATOMIC);
7a291083
JBT		 1969 if (!ehea_mcl_entry) {
1970 ehea_error("no mem for mcl_entry");
1971 return;
1972 }
1973
1974 INIT_LIST_HEAD(&ehea_mcl_entry->list);
1975
1976 memcpy(&ehea_mcl_entry->macaddr, mc_mac_addr, ETH_ALEN);
1977
1978 hret = ehea_multicast_reg_helper(port, ehea_mcl_entry->macaddr,
1979 H_REG_BCMC);
1980 if (!hret)
1981 list_add(&ehea_mcl_entry->list, &port->mc_list->list);
1982 else {
1983 ehea_error("failed registering mcast MAC");
1984 kfree(ehea_mcl_entry);
1985 }
1986}
1987
1988static void ehea_set_multicast_list(struct net_device *dev)
1989{
1990 struct ehea_port *port = netdev_priv(dev);
22bedad3 1991 struct netdev_hw_addr *ha;
48e2f183 1992 int ret;
7a291083
JBT		 1993
1994 if (dev->flags & IFF_PROMISC) {
1995 ehea_promiscuous(dev, 1);
1996 return;
1997 }
1998 ehea_promiscuous(dev, 0);
1999
2000 if (dev->flags & IFF_ALLMULTI) {
2001 ehea_allmulti(dev, 1);
21eee2dd 2002 goto out;
7a291083
JBT		 2003 }
2004 ehea_allmulti(dev, 0);
2005
4cd24eaf 2006 if (!netdev_mc_empty(dev)) {
7a291083
JBT		 2007 ret = ehea_drop_multicast_list(dev);
2008 if (ret) {
2009 /* Dropping the current multicast list failed.
2010 * Enabling ALL_MULTI is the best we can do.
2011 */
2012 ehea_allmulti(dev, 1);
2013 }
2014
4cd24eaf 2015 if (netdev_mc_count(dev) > port->adapter->max_mc_mac) {
a1c5a893 2016 ehea_info("Mcast registration limit reached (0x%llx). "
7a291083
JBT		 2017 "Use ALLMULTI!",
2018 port->adapter->max_mc_mac);
2019 goto out;
2020 }
2021
22bedad3
JP		 2022 netdev_for_each_mc_addr(ha, dev)
2023 ehea_add_multicast_entry(port, ha->addr);
508d2b5d 2024
7a291083
JBT		 2025 }
2026out:
21eee2dd 2027 ehea_update_bcmc_registrations();
7a291083
JBT		 2028 return;
2029}
2030
2031static int ehea_change_mtu(struct net_device *dev, int new_mtu)
2032{
2033 if ((new_mtu < 68) || (new_mtu > EHEA_MAX_PACKET_SIZE))
2034 return -EINVAL;
2035 dev->mtu = new_mtu;
2036 return 0;
2037}
2038
2039static void ehea_xmit2(struct sk_buff *skb, struct net_device *dev,
2040 struct ehea_swqe *swqe, u32 lkey)
2041{
2042 if (skb->protocol == htons(ETH_P_IP)) {
eddc9ec5 2043 const struct iphdr *iph = ip_hdr(skb);
d1d25aab 2044
7a291083
JBT		 2045 /* IPv4 */
2046 swqe->tx_control |= EHEA_SWQE_CRC
2047 | EHEA_SWQE_IP_CHECKSUM
2048 | EHEA_SWQE_TCP_CHECKSUM
2049 | EHEA_SWQE_IMM_DATA_PRESENT
2050 | EHEA_SWQE_DESCRIPTORS_PRESENT;
2051
2052 write_ip_start_end(swqe, skb);
2053
eddc9ec5 2054 if (iph->protocol == IPPROTO_UDP) {
8e95a202
JP		 2055 if ((iph->frag_off & IP_MF) ||
2056 (iph->frag_off & IP_OFFSET))
7a291083
JBT		 2057 /* IP fragment, so don't change cs */
2058 swqe->tx_control &= ~EHEA_SWQE_TCP_CHECKSUM;
2059 else
2060 write_udp_offset_end(swqe, skb);
eddc9ec5 2061 } else if (iph->protocol == IPPROTO_TCP) {
7a291083
JBT		 2062 write_tcp_offset_end(swqe, skb);
2063 }
2064
2065 /* icmp (big data) and ip segmentation packets (all other ip
2066 packets) do not require any special handling */
2067
2068 } else {
2069 /* Other Ethernet Protocol */
2070 swqe->tx_control |= EHEA_SWQE_CRC
2071 | EHEA_SWQE_IMM_DATA_PRESENT
2072 | EHEA_SWQE_DESCRIPTORS_PRESENT;
2073 }
2074
2075 write_swqe2_data(skb, dev, swqe, lkey);
2076}
2077
2078static void ehea_xmit3(struct sk_buff *skb, struct net_device *dev,
2079 struct ehea_swqe *swqe)
2080{
2081 int nfrags = skb_shinfo(skb)->nr_frags;
2082 u8 *imm_data = &swqe->u.immdata_nodesc.immediate_data[0];
2083 skb_frag_t *frag;
2084 int i;
2085
2086 if (skb->protocol == htons(ETH_P_IP)) {
eddc9ec5 2087 const struct iphdr *iph = ip_hdr(skb);
d1d25aab 2088
7a291083
JBT		 2089 /* IPv4 */
2090 write_ip_start_end(swqe, skb);
2091
eddc9ec5 2092 if (iph->protocol == IPPROTO_TCP) {
7a291083
JBT		 2093 swqe->tx_control |= EHEA_SWQE_CRC
2094 | EHEA_SWQE_IP_CHECKSUM
2095 | EHEA_SWQE_TCP_CHECKSUM
2096 | EHEA_SWQE_IMM_DATA_PRESENT;
2097
2098 write_tcp_offset_end(swqe, skb);
2099
eddc9ec5 2100 } else if (iph->protocol == IPPROTO_UDP) {
8e95a202
JP		 2101 if ((iph->frag_off & IP_MF) ||
2102 (iph->frag_off & IP_OFFSET))
7a291083
JBT		 2103 /* IP fragment, so don't change cs */
2104 swqe->tx_control |= EHEA_SWQE_CRC
2105 | EHEA_SWQE_IMM_DATA_PRESENT;
2106 else {
2107 swqe->tx_control |= EHEA_SWQE_CRC
2108 | EHEA_SWQE_IP_CHECKSUM
2109 | EHEA_SWQE_TCP_CHECKSUM
2110 | EHEA_SWQE_IMM_DATA_PRESENT;
2111
2112 write_udp_offset_end(swqe, skb);
2113 }
2114 } else {
2115 /* icmp (big data) and
2116 ip segmentation packets (all other ip packets) */
2117 swqe->tx_control |= EHEA_SWQE_CRC
2118 | EHEA_SWQE_IP_CHECKSUM
2119 | EHEA_SWQE_IMM_DATA_PRESENT;
2120 }
2121 } else {
2122 /* Other Ethernet Protocol */
2123 swqe->tx_control |= EHEA_SWQE_CRC | EHEA_SWQE_IMM_DATA_PRESENT;
2124 }
2125 /* copy (immediate) data */
2126 if (nfrags == 0) {
2127 /* data is in a single piece */
d626f62b 2128 skb_copy_from_linear_data(skb, imm_data, skb->len);
7a291083
JBT		 2129 } else {
2130 /* first copy data from the skb->data buffer ... */
d626f62b 2131 skb_copy_from_linear_data(skb, imm_data,
e743d313
ED		 2132 skb_headlen(skb));
2133 imm_data += skb_headlen(skb);
7a291083
JBT		 2134
2135 /* ... then copy data from the fragments */
2136 for (i = 0; i < nfrags; i++) {
2137 frag = &skb_shinfo(skb)->frags[i];
2138 memcpy(imm_data,
2139 page_address(frag->page) + frag->page_offset,
2140 frag->size);
2141 imm_data += frag->size;
2142 }
2143 }
2144 swqe->immediate_data_length = skb->len;
2145 dev_kfree_skb(skb);
2146}
2147
18604c54
JBT		 2148static inline int ehea_hash_skb(struct sk_buff *skb, int num_qps)
2149{
2150 struct tcphdr *tcp;
2151 u32 tmp;
2152
2153 if ((skb->protocol == htons(ETH_P_IP)) &&
88ca2d07 2154 (ip_hdr(skb)->protocol == IPPROTO_TCP)) {
508d2b5d
DM		 2155 tcp = (struct tcphdr *)(skb_network_header(skb) +
2156 (ip_hdr(skb)->ihl * 4));
18604c54 2157 tmp = (tcp->source + (tcp->dest << 16)) % 31;
88ca2d07 2158 tmp += ip_hdr(skb)->daddr % 31;
18604c54 2159 return tmp % num_qps;
508d2b5d 2160 } else
18604c54
JBT		 2161 return 0;
2162}
2163
7a291083
JBT		 2164static int ehea_start_xmit(struct sk_buff *skb, struct net_device *dev)
2165{
2166 struct ehea_port *port = netdev_priv(dev);
2167 struct ehea_swqe *swqe;
2168 unsigned long flags;
2169 u32 lkey;
2170 int swqe_index;
18604c54
JBT		 2171 struct ehea_port_res *pr;
2172
2173 pr = &port->port_res[ehea_hash_skb(skb, port->num_tx_qps)];
2174
18604c54
JBT		 2175 if (!spin_trylock(&pr->xmit_lock))
2176 return NETDEV_TX_BUSY;
2177
2178 if (pr->queue_stopped) {
2179 spin_unlock(&pr->xmit_lock);
2180 return NETDEV_TX_BUSY;
2181 }
7a291083
JBT		 2182
2183 swqe = ehea_get_swqe(pr->qp, &swqe_index);
2184 memset(swqe, 0, SWQE_HEADER_SIZE);
2185 atomic_dec(&pr->swqe_avail);
2186
2187 if (skb->len <= SWQE3_MAX_IMM) {
2188 u32 sig_iv = port->sig_comp_iv;
2189 u32 swqe_num = pr->swqe_id_counter;
2190 ehea_xmit3(skb, dev, swqe);
2191 swqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE3_TYPE)
2192 | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, swqe_num);
2193 if (pr->swqe_ll_count >= (sig_iv - 1)) {
2194 swqe->wr_id |= EHEA_BMASK_SET(EHEA_WR_ID_REFILL,
2195 sig_iv);
2196 swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
2197 pr->swqe_ll_count = 0;
2198 } else
2199 pr->swqe_ll_count += 1;
2200 } else {
2201 swqe->wr_id =
2202 EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE2_TYPE)
2203 | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, pr->swqe_id_counter)
acbddb59 2204 | EHEA_BMASK_SET(EHEA_WR_ID_REFILL, 1)
7a291083
JBT		 2205 | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, pr->sq_skba.index);
2206 pr->sq_skba.arr[pr->sq_skba.index] = skb;
2207
2208 pr->sq_skba.index++;
2209 pr->sq_skba.index &= (pr->sq_skba.len - 1);
2210
2211 lkey = pr->send_mr.lkey;
2212 ehea_xmit2(skb, dev, swqe, lkey);
acbddb59 2213 swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
7a291083
JBT		 2214 }
2215 pr->swqe_id_counter += 1;
2216
2217 if (port->vgrp && vlan_tx_tag_present(skb)) {
2218 swqe->tx_control |= EHEA_SWQE_VLAN_INSERT;
2219 swqe->vlan_tag = vlan_tx_tag_get(skb);
2220 }
2221
2222 if (netif_msg_tx_queued(port)) {
2223 ehea_info("post swqe on QP %d", pr->qp->init_attr.qp_nr);
bff0a55f 2224 ehea_dump(swqe, 512, "swqe");
7a291083
JBT		 2225 }
2226
2c69448b
JBT		 2227 if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) {
2228 netif_stop_queue(dev);
2229 swqe->tx_control |= EHEA_SWQE_PURGE;
2230 }
44c82152 2231
7a291083 2232 ehea_post_swqe(pr->qp, swqe);
7393b87c 2233 pr->tx_packets++;
7a291083
JBT		 2234
2235 if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) {
2236 spin_lock_irqsave(&pr->netif_queue, flags);
2237 if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) {
acbddb59 2238 pr->p_stats.queue_stopped++;
7a291083
JBT		 2239 netif_stop_queue(dev);
2240 pr->queue_stopped = 1;
2241 }
2242 spin_unlock_irqrestore(&pr->netif_queue, flags);
2243 }
1ae5dc34 2244 dev->trans_start = jiffies; /* NETIF_F_LLTX driver :( */
7a291083 2245 spin_unlock(&pr->xmit_lock);
2c69448b 2246
7a291083
JBT		 2247 return NETDEV_TX_OK;
2248}
2249
2250static void ehea_vlan_rx_register(struct net_device *dev,
2251 struct vlan_group *grp)
2252{
2253 struct ehea_port *port = netdev_priv(dev);
2254 struct ehea_adapter *adapter = port->adapter;
2255 struct hcp_ehea_port_cb1 *cb1;
2256 u64 hret;
2257
2258 port->vgrp = grp;
2259
3faf2693 2260 cb1 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083
JBT		 2261 if (!cb1) {
2262 ehea_error("no mem for cb1");
2263 goto out;
2264 }
2265
7a291083
JBT		 2266 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
2267 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2268 if (hret != H_SUCCESS)
2269 ehea_error("modify_ehea_port failed");
2270
3faf2693 2271 free_page((unsigned long)cb1);
7a291083
JBT		 2272out:
2273 return;
2274}
2275
2276static void ehea_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
2277{
2278 struct ehea_port *port = netdev_priv(dev);
2279 struct ehea_adapter *adapter = port->adapter;
2280 struct hcp_ehea_port_cb1 *cb1;
2281 int index;
2282 u64 hret;
2283
3faf2693 2284 cb1 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083
JBT		 2285 if (!cb1) {
2286 ehea_error("no mem for cb1");
2287 goto out;
2288 }
2289
2290 hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
2291 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2292 if (hret != H_SUCCESS) {
2293 ehea_error("query_ehea_port failed");
2294 goto out;
2295 }
2296
2297 index = (vid / 64);
dec590c1 2298 cb1->vlan_filter[index] |= ((u64)(0x8000000000000000 >> (vid & 0x3F)));
7a291083
JBT		 2299
2300 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
2301 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2302 if (hret != H_SUCCESS)
2303 ehea_error("modify_ehea_port failed");
2304out:
3faf2693 2305 free_page((unsigned long)cb1);
7a291083
JBT		 2306 return;
2307}
2308
2309static void ehea_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
2310{
2311 struct ehea_port *port = netdev_priv(dev);
2312 struct ehea_adapter *adapter = port->adapter;
2313 struct hcp_ehea_port_cb1 *cb1;
2314 int index;
2315 u64 hret;
2316
5c15bdec 2317 vlan_group_set_device(port->vgrp, vid, NULL);
7a291083 2318
3faf2693 2319 cb1 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083
JBT		 2320 if (!cb1) {
2321 ehea_error("no mem for cb1");
2322 goto out;
2323 }
2324
2325 hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
2326 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2327 if (hret != H_SUCCESS) {
2328 ehea_error("query_ehea_port failed");
2329 goto out;
2330 }
2331
2332 index = (vid / 64);
dec590c1 2333 cb1->vlan_filter[index] &= ~((u64)(0x8000000000000000 >> (vid & 0x3F)));
7a291083
JBT		 2334
2335 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
2336 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2337 if (hret != H_SUCCESS)
2338 ehea_error("modify_ehea_port failed");
2339out:
3faf2693 2340 free_page((unsigned long)cb1);
7a291083
JBT		 2341 return;
2342}
2343
2344int ehea_activate_qp(struct ehea_adapter *adapter, struct ehea_qp *qp)
2345{
2346 int ret = -EIO;
2347 u64 hret;
2348 u16 dummy16 = 0;
2349 u64 dummy64 = 0;
508d2b5d 2350 struct hcp_modify_qp_cb0 *cb0;
7a291083 2351
3faf2693 2352 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083
JBT		 2353 if (!cb0) {
2354 ret = -ENOMEM;
2355 goto out;
2356 }
2357
2358 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2359 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2360 if (hret != H_SUCCESS) {
2361 ehea_error("query_ehea_qp failed (1)");
2362 goto out;
2363 }
2364
2365 cb0->qp_ctl_reg = H_QP_CR_STATE_INITIALIZED;
2366 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2367 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2368 &dummy64, &dummy64, &dummy16, &dummy16);
2369 if (hret != H_SUCCESS) {
2370 ehea_error("modify_ehea_qp failed (1)");
2371 goto out;
2372 }
2373
2374 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2375 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2376 if (hret != H_SUCCESS) {
2377 ehea_error("query_ehea_qp failed (2)");
2378 goto out;
2379 }
2380
2381 cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_INITIALIZED;
2382 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2383 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2384 &dummy64, &dummy64, &dummy16, &dummy16);
2385 if (hret != H_SUCCESS) {
2386 ehea_error("modify_ehea_qp failed (2)");
2387 goto out;
2388 }
2389
2390 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2391 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2392 if (hret != H_SUCCESS) {
2393 ehea_error("query_ehea_qp failed (3)");
2394 goto out;
2395 }
2396
2397 cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_RDY2SND;
2398 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2399 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2400 &dummy64, &dummy64, &dummy16, &dummy16);
2401 if (hret != H_SUCCESS) {
2402 ehea_error("modify_ehea_qp failed (3)");
2403 goto out;
2404 }
2405
2406 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2407 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2408 if (hret != H_SUCCESS) {
2409 ehea_error("query_ehea_qp failed (4)");
2410 goto out;
2411 }
2412
2413 ret = 0;
2414out:
3faf2693 2415 free_page((unsigned long)cb0);
7a291083
JBT		 2416 return ret;
2417}
2418
2419static int ehea_port_res_setup(struct ehea_port *port, int def_qps,
2420 int add_tx_qps)
2421{
2422 int ret, i;
2423 struct port_res_cfg pr_cfg, pr_cfg_small_rx;
2424 enum ehea_eq_type eq_type = EHEA_EQ;
2425
2426 port->qp_eq = ehea_create_eq(port->adapter, eq_type,
2427 EHEA_MAX_ENTRIES_EQ, 1);
2428 if (!port->qp_eq) {
2429 ret = -EINVAL;
2430 ehea_error("ehea_create_eq failed (qp_eq)");
2431 goto out_kill_eq;
2432 }
2433
2434 pr_cfg.max_entries_rcq = rq1_entries + rq2_entries + rq3_entries;
18604c54 2435 pr_cfg.max_entries_scq = sq_entries * 2;
7a291083
JBT		 2436 pr_cfg.max_entries_sq = sq_entries;
2437 pr_cfg.max_entries_rq1 = rq1_entries;
2438 pr_cfg.max_entries_rq2 = rq2_entries;
2439 pr_cfg.max_entries_rq3 = rq3_entries;
2440
2441 pr_cfg_small_rx.max_entries_rcq = 1;
2442 pr_cfg_small_rx.max_entries_scq = sq_entries;
2443 pr_cfg_small_rx.max_entries_sq = sq_entries;
2444 pr_cfg_small_rx.max_entries_rq1 = 1;
2445 pr_cfg_small_rx.max_entries_rq2 = 1;
2446 pr_cfg_small_rx.max_entries_rq3 = 1;
2447
2448 for (i = 0; i < def_qps; i++) {
2449 ret = ehea_init_port_res(port, &port->port_res[i], &pr_cfg, i);
2450 if (ret)
2451 goto out_clean_pr;
2452 }
2453 for (i = def_qps; i < def_qps + add_tx_qps; i++) {
2454 ret = ehea_init_port_res(port, &port->port_res[i],
2455 &pr_cfg_small_rx, i);
2456 if (ret)
2457 goto out_clean_pr;
2458 }
2459
2460 return 0;
2461
2462out_clean_pr:
2463 while (--i >= 0)
2464 ehea_clean_portres(port, &port->port_res[i]);
2465
2466out_kill_eq:
2467 ehea_destroy_eq(port->qp_eq);
2468 return ret;
2469}
2470
2471static int ehea_clean_all_portres(struct ehea_port *port)
2472{
2473 int ret = 0;
2474 int i;
2475
508d2b5d 2476 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
7a291083
JBT		 2477 ret |= ehea_clean_portres(port, &port->port_res[i]);
2478
2479 ret |= ehea_destroy_eq(port->qp_eq);
2480
2481 return ret;
2482}
2483
35cf2e2e 2484static void ehea_remove_adapter_mr(struct ehea_adapter *adapter)
1211bb6d 2485{
35cf2e2e
TK		 2486 if (adapter->active_ports)
2487 return;
1211bb6d
TK		 2488
2489 ehea_rem_mr(&adapter->mr);
2490}
2491
35cf2e2e 2492static int ehea_add_adapter_mr(struct ehea_adapter *adapter)
1211bb6d 2493{
35cf2e2e
TK		 2494 if (adapter->active_ports)
2495 return 0;
1211bb6d
TK		 2496
2497 return ehea_reg_kernel_mr(adapter, &adapter->mr);
2498}
2499
7a291083
JBT		 2500static int ehea_up(struct net_device *dev)
2501{
2502 int ret, i;
2503 struct ehea_port *port = netdev_priv(dev);
7a291083
JBT		 2504
2505 if (port->state == EHEA_PORT_UP)
2506 return 0;
2507
2508 ret = ehea_port_res_setup(port, port->num_def_qps,
2509 port->num_add_tx_qps);
2510 if (ret) {
2511 ehea_error("port_res_failed");
2512 goto out;
2513 }
2514
2515 /* Set default QP for this port */
2516 ret = ehea_configure_port(port);
2517 if (ret) {
2518 ehea_error("ehea_configure_port failed. ret:%d", ret);
2519 goto out_clean_pr;
2520 }
2521
7a291083
JBT		 2522 ret = ehea_reg_interrupts(dev);
2523 if (ret) {
f9e29228
TK		 2524 ehea_error("reg_interrupts failed. ret:%d", ret);
2525 goto out_clean_pr;
7a291083
JBT		 2526 }
2527
508d2b5d 2528 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
7a291083
JBT		 2529 ret = ehea_activate_qp(port->adapter, port->port_res[i].qp);
2530 if (ret) {
2531 ehea_error("activate_qp failed");
2532 goto out_free_irqs;
2533 }
2534 }
2535
508d2b5d 2536 for (i = 0; i < port->num_def_qps; i++) {
7a291083
JBT		 2537 ret = ehea_fill_port_res(&port->port_res[i]);
2538 if (ret) {
2539 ehea_error("out_free_irqs");
2540 goto out_free_irqs;
2541 }
2542 }
2543
21eee2dd
TK		 2544 ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
2545 if (ret) {
2546 ret = -EIO;
2547 goto out_free_irqs;
2548 }
2549
7a291083 2550 port->state = EHEA_PORT_UP;
21eee2dd
TK		 2551
2552 ret = 0;
7a291083
JBT		 2553 goto out;
2554
2555out_free_irqs:
2556 ehea_free_interrupts(dev);
2557
7a291083
JBT		 2558out_clean_pr:
2559 ehea_clean_all_portres(port);
2560out:
44c82152
TK		 2561 if (ret)
2562 ehea_info("Failed starting %s. ret=%i", dev->name, ret);
2563
21eee2dd 2564 ehea_update_bcmc_registrations();
21eee2dd 2565 ehea_update_firmware_handles();
21eee2dd 2566
7a291083
JBT		 2567 return ret;
2568}
2569
bea3348e
SH		 2570static void port_napi_disable(struct ehea_port *port)
2571{
2572 int i;
2573
0173b793 2574 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
bea3348e
SH		 2575 napi_disable(&port->port_res[i].napi);
2576}
2577
2578static void port_napi_enable(struct ehea_port *port)
2579{
2580 int i;
2581
0173b793 2582 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
bea3348e
SH		 2583 napi_enable(&port->port_res[i].napi);
2584}
2585
7a291083
JBT		 2586static int ehea_open(struct net_device *dev)
2587{
2588 int ret;
2589 struct ehea_port *port = netdev_priv(dev);
2590
a5af6ad3 2591 mutex_lock(&port->port_lock);
7a291083
JBT		 2592
2593 if (netif_msg_ifup(port))
2594 ehea_info("enabling port %s", dev->name);
2595
2596 ret = ehea_up(dev);
bea3348e
SH		 2597 if (!ret) {
2598 port_napi_enable(port);
7a291083 2599 netif_start_queue(dev);
bea3348e 2600 }
7a291083 2601
a5af6ad3 2602 mutex_unlock(&port->port_lock);
7a291083
JBT		 2603
2604 return ret;
2605}
2606
2607static int ehea_down(struct net_device *dev)
2608{
bea3348e 2609 int ret;
7a291083
JBT		 2610 struct ehea_port *port = netdev_priv(dev);
2611
2612 if (port->state == EHEA_PORT_DOWN)
2613 return 0;
2614
2615 ehea_drop_multicast_list(dev);
21eee2dd
TK		 2616 ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
2617
7a291083
JBT		 2618 ehea_free_interrupts(dev);
2619
7a291083 2620 port->state = EHEA_PORT_DOWN;
44c82152 2621
21eee2dd 2622 ehea_update_bcmc_registrations();
21eee2dd 2623
44c82152
TK		 2624 ret = ehea_clean_all_portres(port);
2625 if (ret)
2626 ehea_info("Failed freeing resources for %s. ret=%i",
2627 dev->name, ret);
2628
21eee2dd 2629 ehea_update_firmware_handles();
21eee2dd 2630
7a291083
JBT		 2631 return ret;
2632}
2633
2634static int ehea_stop(struct net_device *dev)
2635{
2636 int ret;
2637 struct ehea_port *port = netdev_priv(dev);
2638
2639 if (netif_msg_ifdown(port))
2640 ehea_info("disabling port %s", dev->name);
2641
2f69ae01 2642 set_bit(__EHEA_DISABLE_PORT_RESET, &port->flags);
4bb073c0 2643 cancel_work_sync(&port->reset_task);
a5af6ad3 2644 mutex_lock(&port->port_lock);
7a291083 2645 netif_stop_queue(dev);
0173b793 2646 port_napi_disable(port);
7a291083 2647 ret = ehea_down(dev);
a5af6ad3 2648 mutex_unlock(&port->port_lock);
2f69ae01 2649 clear_bit(__EHEA_DISABLE_PORT_RESET, &port->flags);
7a291083
JBT		 2650 return ret;
2651}
2652
22559c5d 2653static void ehea_purge_sq(struct ehea_qp *orig_qp)
2c69448b
JBT		 2654{
2655 struct ehea_qp qp = *orig_qp;
2656 struct ehea_qp_init_attr *init_attr = &qp.init_attr;
2657 struct ehea_swqe *swqe;
2658 int wqe_index;
2659 int i;
2660
2661 for (i = 0; i < init_attr->act_nr_send_wqes; i++) {
2662 swqe = ehea_get_swqe(&qp, &wqe_index);
2663 swqe->tx_control |= EHEA_SWQE_PURGE;
2664 }
2665}
2666
22559c5d 2667static void ehea_flush_sq(struct ehea_port *port)
44fb3126
TK		 2668{
2669 int i;
2670
2671 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
2672 struct ehea_port_res *pr = &port->port_res[i];
2673 int swqe_max = pr->sq_skba_size - 2 - pr->swqe_ll_count;
2674 int k = 0;
2675 while (atomic_read(&pr->swqe_avail) < swqe_max) {
2676 msleep(5);
2677 if (++k == 20)
2678 break;
2679 }
2680 }
2681}
2682
2c69448b
JBT		 2683int ehea_stop_qps(struct net_device *dev)
2684{
2685 struct ehea_port *port = netdev_priv(dev);
2686 struct ehea_adapter *adapter = port->adapter;
508d2b5d 2687 struct hcp_modify_qp_cb0 *cb0;
2c69448b
JBT		 2688 int ret = -EIO;
2689 int dret;
2690 int i;
2691 u64 hret;
2692 u64 dummy64 = 0;
2693 u16 dummy16 = 0;
2694
3faf2693 2695 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
2c69448b
JBT		 2696 if (!cb0) {
2697 ret = -ENOMEM;
2698 goto out;
2699 }
2700
2701 for (i = 0; i < (port->num_def_qps + port->num_add_tx_qps); i++) {
2702 struct ehea_port_res *pr = &port->port_res[i];
2703 struct ehea_qp *qp = pr->qp;
2704
2705 /* Purge send queue */
2706 ehea_purge_sq(qp);
2707
2708 /* Disable queue pair */
2709 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2710 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2711 cb0);
2712 if (hret != H_SUCCESS) {
2713 ehea_error("query_ehea_qp failed (1)");
2714 goto out;
2715 }
2716
2717 cb0->qp_ctl_reg = (cb0->qp_ctl_reg & H_QP_CR_RES_STATE) << 8;
2718 cb0->qp_ctl_reg &= ~H_QP_CR_ENABLED;
2719
2720 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2721 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG,
2722 1), cb0, &dummy64,
2723 &dummy64, &dummy16, &dummy16);
2724 if (hret != H_SUCCESS) {
2725 ehea_error("modify_ehea_qp failed (1)");
2726 goto out;
2727 }
2728
2729 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2730 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2731 cb0);
2732 if (hret != H_SUCCESS) {
2733 ehea_error("query_ehea_qp failed (2)");
2734 goto out;
2735 }
2736
2737 /* deregister shared memory regions */
2738 dret = ehea_rem_smrs(pr);
2739 if (dret) {
2740 ehea_error("unreg shared memory region failed");
2741 goto out;
2742 }
2743 }
2744
2745 ret = 0;
2746out:
3faf2693 2747 free_page((unsigned long)cb0);
2c69448b
JBT		 2748
2749 return ret;
2750}
2751
508d2b5d 2752void ehea_update_rqs(struct ehea_qp *orig_qp, struct ehea_port_res *pr)
2c69448b
JBT		 2753{
2754 struct ehea_qp qp = *orig_qp;
2755 struct ehea_qp_init_attr *init_attr = &qp.init_attr;
2756 struct ehea_rwqe *rwqe;
2757 struct sk_buff **skba_rq2 = pr->rq2_skba.arr;
2758 struct sk_buff **skba_rq3 = pr->rq3_skba.arr;
2759 struct sk_buff *skb;
2760 u32 lkey = pr->recv_mr.lkey;
2761
2762
2763 int i;
2764 int index;
2765
2766 for (i = 0; i < init_attr->act_nr_rwqes_rq2 + 1; i++) {
2767 rwqe = ehea_get_next_rwqe(&qp, 2);
2768 rwqe->sg_list[0].l_key = lkey;
2769 index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, rwqe->wr_id);
2770 skb = skba_rq2[index];
2771 if (skb)
2772 rwqe->sg_list[0].vaddr = ehea_map_vaddr(skb->data);
2773 }
2774
2775 for (i = 0; i < init_attr->act_nr_rwqes_rq3 + 1; i++) {
2776 rwqe = ehea_get_next_rwqe(&qp, 3);
2777 rwqe->sg_list[0].l_key = lkey;
2778 index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, rwqe->wr_id);
2779 skb = skba_rq3[index];
2780 if (skb)
2781 rwqe->sg_list[0].vaddr = ehea_map_vaddr(skb->data);
2782 }
2783}
2784
2785int ehea_restart_qps(struct net_device *dev)
2786{
2787 struct ehea_port *port = netdev_priv(dev);
2788 struct ehea_adapter *adapter = port->adapter;
2789 int ret = 0;
2790 int i;
2791
508d2b5d 2792 struct hcp_modify_qp_cb0 *cb0;
2c69448b
JBT		 2793 u64 hret;
2794 u64 dummy64 = 0;
2795 u16 dummy16 = 0;
2796
3faf2693 2797 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
2c69448b
JBT		 2798 if (!cb0) {
2799 ret = -ENOMEM;
2800 goto out;
2801 }
2802
2803 for (i = 0; i < (port->num_def_qps + port->num_add_tx_qps); i++) {
2804 struct ehea_port_res *pr = &port->port_res[i];
2805 struct ehea_qp *qp = pr->qp;
2806
2807 ret = ehea_gen_smrs(pr);
2808 if (ret) {
2809 ehea_error("creation of shared memory regions failed");
2810 goto out;
2811 }
2812
2813 ehea_update_rqs(qp, pr);
2814
2815 /* Enable queue pair */
2816 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2817 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2818 cb0);
2819 if (hret != H_SUCCESS) {
2820 ehea_error("query_ehea_qp failed (1)");
2821 goto out;
2822 }
2823
2824 cb0->qp_ctl_reg = (cb0->qp_ctl_reg & H_QP_CR_RES_STATE) << 8;
2825 cb0->qp_ctl_reg |= H_QP_CR_ENABLED;
2826
2827 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2828 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG,
2829 1), cb0, &dummy64,
2830 &dummy64, &dummy16, &dummy16);
2831 if (hret != H_SUCCESS) {
2832 ehea_error("modify_ehea_qp failed (1)");
2833 goto out;
2834 }
2835
2836 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2837 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2838 cb0);
2839 if (hret != H_SUCCESS) {
2840 ehea_error("query_ehea_qp failed (2)");
2841 goto out;
2842 }
2843
2844 /* refill entire queue */
2845 ehea_refill_rq1(pr, pr->rq1_skba.index, 0);
2846 ehea_refill_rq2(pr, 0);
2847 ehea_refill_rq3(pr, 0);
2848 }
2849out:
3faf2693 2850 free_page((unsigned long)cb0);
2c69448b
JBT		 2851
2852 return ret;
2853}
2854
c4028958 2855static void ehea_reset_port(struct work_struct *work)
7a291083
JBT		 2856{
2857 int ret;
c4028958
DH		 2858 struct ehea_port *port =
2859 container_of(work, struct ehea_port, reset_task);
2860 struct net_device *dev = port->netdev;
7a291083
JBT		 2861
2862 port->resets++;
a5af6ad3 2863 mutex_lock(&port->port_lock);
7a291083 2864 netif_stop_queue(dev);
bea3348e
SH		 2865
2866 port_napi_disable(port);
7a291083 2867
44c82152 2868 ehea_down(dev);
7a291083
JBT		 2869
2870 ret = ehea_up(dev);
44c82152 2871 if (ret)
7a291083 2872 goto out;
7a291083 2873
2c69448b
JBT		 2874 ehea_set_multicast_list(dev);
2875
7a291083
JBT		 2876 if (netif_msg_timer(port))
2877 ehea_info("Device %s resetted successfully", dev->name);
2878
bea3348e
SH		 2879 port_napi_enable(port);
2880
7a291083
JBT		 2881 netif_wake_queue(dev);
2882out:
a5af6ad3 2883 mutex_unlock(&port->port_lock);
7a291083
JBT		 2884 return;
2885}
2886
44c82152
TK		 2887static void ehea_rereg_mrs(struct work_struct *work)
2888{
2889 int ret, i;
2890 struct ehea_adapter *adapter;
2891
d4f12daf 2892 ehea_info("LPAR memory changed - re-initializing driver");
44c82152
TK		 2893
2894 list_for_each_entry(adapter, &adapter_list, list)
2895 if (adapter->active_ports) {
2896 /* Shutdown all ports */
2897 for (i = 0; i < EHEA_MAX_PORTS; i++) {
2898 struct ehea_port *port = adapter->port[i];
a5af6ad3 2899 struct net_device *dev;
44c82152 2900
a5af6ad3
DW		 2901 if (!port)
2902 continue;
44c82152 2903
a5af6ad3
DW		 2904 dev = port->netdev;
2905
2906 if (dev->flags & IFF_UP) {
2907 mutex_lock(&port->port_lock);
2908 netif_stop_queue(dev);
df39e8ba 2909 ehea_flush_sq(port);
a5af6ad3
DW		 2910 ret = ehea_stop_qps(dev);
2911 if (ret) {
2912 mutex_unlock(&port->port_lock);
2913 goto out;
44c82152 2914 }
a5af6ad3
DW		 2915 port_napi_disable(port);
2916 mutex_unlock(&port->port_lock);
44c82152
TK		 2917 }
2918 }
2919
2920 /* Unregister old memory region */
2921 ret = ehea_rem_mr(&adapter->mr);
2922 if (ret) {
2923 ehea_error("unregister MR failed - driver"
2924 " inoperable!");
2925 goto out;
2926 }
2927 }
2928
44c82152
TK		 2929 clear_bit(__EHEA_STOP_XFER, &ehea_driver_flags);
2930
2931 list_for_each_entry(adapter, &adapter_list, list)
2932 if (adapter->active_ports) {
2933 /* Register new memory region */
2934 ret = ehea_reg_kernel_mr(adapter, &adapter->mr);
2935 if (ret) {
2936 ehea_error("register MR failed - driver"
2937 " inoperable!");
2938 goto out;
2939 }
2940
2941 /* Restart all ports */
2942 for (i = 0; i < EHEA_MAX_PORTS; i++) {
2943 struct ehea_port *port = adapter->port[i];
2944
2945 if (port) {
2946 struct net_device *dev = port->netdev;
2947
2948 if (dev->flags & IFF_UP) {
a5af6ad3 2949 mutex_lock(&port->port_lock);
2c69448b
JBT		 2950 port_napi_enable(port);
2951 ret = ehea_restart_qps(dev);
2952 if (!ret)
44c82152 2953 netif_wake_queue(dev);
a5af6ad3 2954 mutex_unlock(&port->port_lock);
44c82152
TK		 2955 }
2956 }
2957 }
2958 }
68905eb4 2959 ehea_info("re-initializing driver complete");
44c82152
TK		 2960out:
2961 return;
2962}
2963
7a291083
JBT		 2964static void ehea_tx_watchdog(struct net_device *dev)
2965{
2966 struct ehea_port *port = netdev_priv(dev);
2967
2c69448b
JBT		 2968 if (netif_carrier_ok(dev) &&
2969 !test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))
2f69ae01 2970 ehea_schedule_port_reset(port);
7a291083
JBT		 2971}
2972
2973int ehea_sense_adapter_attr(struct ehea_adapter *adapter)
2974{
2975 struct hcp_query_ehea *cb;
2976 u64 hret;
2977 int ret;
2978
3faf2693 2979 cb = (void *)get_zeroed_page(GFP_KERNEL);
7a291083
JBT		 2980 if (!cb) {
2981 ret = -ENOMEM;
2982 goto out;
2983 }
2984
2985 hret = ehea_h_query_ehea(adapter->handle, cb);
2986
2987 if (hret != H_SUCCESS) {
2988 ret = -EIO;
2989 goto out_herr;
2990 }
2991
7a291083
JBT		 2992 adapter->max_mc_mac = cb->max_mc_mac - 1;
2993 ret = 0;
2994
2995out_herr:
3faf2693 2996 free_page((unsigned long)cb);
7a291083
JBT		 2997out:
2998 return ret;
2999}
3000
1acf2318 3001int ehea_get_jumboframe_status(struct ehea_port *port, int *jumbo)
7a291083 3002{
7a291083 3003 struct hcp_ehea_port_cb4 *cb4;
1acf2318
JBT		 3004 u64 hret;
3005 int ret = 0;
7a291083 3006
1acf2318 3007 *jumbo = 0;
7a291083 3008
1acf2318 3009 /* (Try to) enable *jumbo frames */
3faf2693 3010 cb4 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083
JBT		 3011 if (!cb4) {
3012 ehea_error("no mem for cb4");
1acf2318
JBT		 3013 ret = -ENOMEM;
3014 goto out;
7a291083 3015 } else {
1acf2318 3016 hret = ehea_h_query_ehea_port(port->adapter->handle,
9c750b7d
TK		 3017 port->logical_port_id,
3018 H_PORT_CB4,
3019 H_PORT_CB4_JUMBO, cb4);
9c750b7d
TK		 3020 if (hret == H_SUCCESS) {
3021 if (cb4->jumbo_frame)
1acf2318 3022 *jumbo = 1;
9c750b7d
TK		 3023 else {
3024 cb4->jumbo_frame = 1;
1acf2318
JBT		 3025 hret = ehea_h_modify_ehea_port(port->adapter->
3026 handle,
9c750b7d 3027 port->
1acf2318 3028 logical_port_id,
9c750b7d
TK		 3029 H_PORT_CB4,
3030 H_PORT_CB4_JUMBO,
3031 cb4);
3032 if (hret == H_SUCCESS)
1acf2318 3033 *jumbo = 1;
9c750b7d 3034 }
1acf2318
JBT		 3035 } else
3036 ret = -EINVAL;
3037
3faf2693 3038 free_page((unsigned long)cb4);
7a291083 3039 }
1acf2318
JBT		 3040out:
3041 return ret;
3042}
3043
3044static ssize_t ehea_show_port_id(struct device *dev,
3045 struct device_attribute *attr, char *buf)
3046{
3047 struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev);
a8e34fda 3048 return sprintf(buf, "%d", port->logical_port_id);
1acf2318
JBT		 3049}
3050
3051static DEVICE_ATTR(log_port_id, S_IRUSR | S_IRGRP | S_IROTH, ehea_show_port_id,
3052 NULL);
3053
3054static void __devinit logical_port_release(struct device *dev)
3055{
3056 struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev);
3057 of_node_put(port->ofdev.node);
3058}
3059
3060static struct device *ehea_register_port(struct ehea_port *port,
3061 struct device_node *dn)
3062{
3063 int ret;
3064
3065 port->ofdev.node = of_node_get(dn);
6b08f3ae 3066 port->ofdev.dev.parent = &port->adapter->ofdev->dev;
d1dea38d 3067 port->ofdev.dev.bus = &ibmebus_bus_type;
1acf2318 3068
db1d7bf7 3069 dev_set_name(&port->ofdev.dev, "port%d", port_name_cnt++);
1acf2318
JBT		 3070 port->ofdev.dev.release = logical_port_release;
3071
3072 ret = of_device_register(&port->ofdev);
3073 if (ret) {
3074 ehea_error("failed to register device. ret=%d", ret);
3075 goto out;
3076 }
3077
3078 ret = device_create_file(&port->ofdev.dev, &dev_attr_log_port_id);
d1d25aab 3079 if (ret) {
1acf2318
JBT		 3080 ehea_error("failed to register attributes, ret=%d", ret);
3081 goto out_unreg_of_dev;
3082 }
e542aa6b 3083
1acf2318
JBT		 3084 return &port->ofdev.dev;
3085
3086out_unreg_of_dev:
3087 of_device_unregister(&port->ofdev);
3088out:
3089 return NULL;
3090}
3091
3092static void ehea_unregister_port(struct ehea_port *port)
3093{
3094 device_remove_file(&port->ofdev.dev, &dev_attr_log_port_id);
3095 of_device_unregister(&port->ofdev);
3096}
3097
086c1b2c
TK		 3098static const struct net_device_ops ehea_netdev_ops = {
3099 .ndo_open = ehea_open,
3100 .ndo_stop = ehea_stop,
3101 .ndo_start_xmit = ehea_start_xmit,
3102#ifdef CONFIG_NET_POLL_CONTROLLER
3103 .ndo_poll_controller = ehea_netpoll,
3104#endif
3105 .ndo_get_stats = ehea_get_stats,
3106 .ndo_set_mac_address = ehea_set_mac_addr,
240c102d 3107 .ndo_validate_addr = eth_validate_addr,
086c1b2c
TK		 3108 .ndo_set_multicast_list = ehea_set_multicast_list,
3109 .ndo_change_mtu = ehea_change_mtu,
3110 .ndo_vlan_rx_register = ehea_vlan_rx_register,
3111 .ndo_vlan_rx_add_vid = ehea_vlan_rx_add_vid,
32e8f9a8
AB		 3112 .ndo_vlan_rx_kill_vid = ehea_vlan_rx_kill_vid,
3113 .ndo_tx_timeout = ehea_tx_watchdog,
086c1b2c
TK		 3114};
3115
1acf2318
JBT		 3116struct ehea_port *ehea_setup_single_port(struct ehea_adapter *adapter,
3117 u32 logical_port_id,
3118 struct device_node *dn)
3119{
3120 int ret;
3121 struct net_device *dev;
3122 struct ehea_port *port;
3123 struct device *port_dev;
3124 int jumbo;
3125
3126 /* allocate memory for the port structures */
3127 dev = alloc_etherdev(sizeof(struct ehea_port));
3128
3129 if (!dev) {
3130 ehea_error("no mem for net_device");
3131 ret = -ENOMEM;
3132 goto out_err;
3133 }
3134
3135 port = netdev_priv(dev);
3136
a5af6ad3 3137 mutex_init(&port->port_lock);
1acf2318
JBT		 3138 port->state = EHEA_PORT_DOWN;
3139 port->sig_comp_iv = sq_entries / 10;
3140
3141 port->adapter = adapter;
3142 port->netdev = dev;
3143 port->logical_port_id = logical_port_id;
3144
3145 port->msg_enable = netif_msg_init(msg_level, EHEA_MSG_DEFAULT);
3146
3147 port->mc_list = kzalloc(sizeof(struct ehea_mc_list), GFP_KERNEL);
3148 if (!port->mc_list) {
3149 ret = -ENOMEM;
3150 goto out_free_ethdev;
3151 }
3152
3153 INIT_LIST_HEAD(&port->mc_list->list);
3154
3155 ret = ehea_sense_port_attr(port);
3156 if (ret)
3157 goto out_free_mc_list;
3158
3159 port_dev = ehea_register_port(port, dn);
3160 if (!port_dev)
3161 goto out_free_mc_list;
3162
3163 SET_NETDEV_DEV(dev, port_dev);
7a291083
JBT		 3164
3165 /* initialize net_device structure */
7a291083
JBT		 3166 memcpy(dev->dev_addr, &port->mac_addr, ETH_ALEN);
3167
086c1b2c
TK		 3168 dev->netdev_ops = &ehea_netdev_ops;
3169 ehea_set_ethtool_ops(dev);
3170
7a291083 3171 dev->features = NETIF_F_SG | NETIF_F_FRAGLIST | NETIF_F_TSO
dc01c447 3172 | NETIF_F_HIGHDMA | NETIF_F_IP_CSUM | NETIF_F_HW_VLAN_TX
7a291083
JBT		 3173 | NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_FILTER
3174 | NETIF_F_LLTX;
7a291083
JBT		 3175 dev->watchdog_timeo = EHEA_WATCH_DOG_TIMEOUT;
3176
c4028958 3177 INIT_WORK(&port->reset_task, ehea_reset_port);
7a291083
JBT		 3178
3179 ret = register_netdev(dev);
3180 if (ret) {
3181 ehea_error("register_netdev failed. ret=%d", ret);
21eee2dd 3182 goto out_unreg_port;
7a291083
JBT		 3183 }
3184
d4dc4ec9
JBT		 3185 port->lro_max_aggr = lro_max_aggr;
3186
1acf2318 3187 ret = ehea_get_jumboframe_status(port, &jumbo);
e542aa6b 3188 if (ret)
1acf2318
JBT		 3189 ehea_error("failed determining jumbo frame status for %s",
3190 port->netdev->name);
3191
9c750b7d
TK		 3192 ehea_info("%s: Jumbo frames are %sabled", dev->name,
3193 jumbo == 1 ? "en" : "dis");
3194
44c82152
TK		 3195 adapter->active_ports++;
3196
1acf2318 3197 return port;
7a291083 3198
1acf2318
JBT		 3199out_unreg_port:
3200 ehea_unregister_port(port);
3201
3202out_free_mc_list:
7a291083 3203 kfree(port->mc_list);
1acf2318
JBT		 3204
3205out_free_ethdev:
3206 free_netdev(dev);
3207
3208out_err:
3209 ehea_error("setting up logical port with id=%d failed, ret=%d",
3210 logical_port_id, ret);
3211 return NULL;
3212}
3213
3214static void ehea_shutdown_single_port(struct ehea_port *port)
3215{
7fb1c2ac 3216 struct ehea_adapter *adapter = port->adapter;
1acf2318
JBT		 3217 unregister_netdev(port->netdev);
3218 ehea_unregister_port(port);
3219 kfree(port->mc_list);
3220 free_netdev(port->netdev);
7fb1c2ac 3221 adapter->active_ports--;
7a291083
JBT		 3222}
3223
3224static int ehea_setup_ports(struct ehea_adapter *adapter)
3225{
1acf2318
JBT		 3226 struct device_node *lhea_dn;
3227 struct device_node *eth_dn = NULL;
d1d25aab 3228
9f9a3b8a 3229 const u32 *dn_log_port_id;
1acf2318
JBT		 3230 int i = 0;
3231
6b08f3ae 3232 lhea_dn = adapter->ofdev->node;
1eef4e04 3233 while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) {
e542aa6b 3234
40cd3a45 3235 dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no",
d1d25aab 3236 NULL);
1acf2318
JBT		 3237 if (!dn_log_port_id) {
3238 ehea_error("bad device node: eth_dn name=%s",
3239 eth_dn->full_name);
3240 continue;
3241 }
7a291083 3242
1211bb6d
TK		 3243 if (ehea_add_adapter_mr(adapter)) {
3244 ehea_error("creating MR failed");
3245 of_node_put(eth_dn);
3246 return -EIO;
3247 }
3248
1acf2318
JBT		 3249 adapter->port[i] = ehea_setup_single_port(adapter,
3250 *dn_log_port_id,
3251 eth_dn);
7a291083 3252 if (adapter->port[i])
1acf2318 3253 ehea_info("%s -> logical port id #%d",
e542aa6b 3254 adapter->port[i]->netdev->name,
1acf2318 3255 *dn_log_port_id);
1211bb6d
TK		 3256 else
3257 ehea_remove_adapter_mr(adapter);
3258
1acf2318 3259 i++;
1eef4e04 3260 };
1211bb6d 3261 return 0;
1acf2318
JBT		 3262}
3263
e542aa6b
JBT		 3264static struct device_node *ehea_get_eth_dn(struct ehea_adapter *adapter,
3265 u32 logical_port_id)
1acf2318
JBT		 3266{
3267 struct device_node *lhea_dn;
3268 struct device_node *eth_dn = NULL;
9f9a3b8a 3269 const u32 *dn_log_port_id;
1acf2318 3270
6b08f3ae 3271 lhea_dn = adapter->ofdev->node;
1eef4e04 3272 while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) {
e542aa6b 3273
40cd3a45 3274 dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no",
d1d25aab 3275 NULL);
1acf2318
JBT		 3276 if (dn_log_port_id)
3277 if (*dn_log_port_id == logical_port_id)
3278 return eth_dn;
1eef4e04 3279 };
1acf2318
JBT		 3280
3281 return NULL;
3282}
3283
3284static ssize_t ehea_probe_port(struct device *dev,
3285 struct device_attribute *attr,
3286 const char *buf, size_t count)
3287{
c7ae011d 3288 struct ehea_adapter *adapter = dev_get_drvdata(dev);
1acf2318
JBT		 3289 struct ehea_port *port;
3290 struct device_node *eth_dn = NULL;
3291 int i;
3292
3293 u32 logical_port_id;
3294
a8e34fda 3295 sscanf(buf, "%d", &logical_port_id);
1acf2318
JBT		 3296
3297 port = ehea_get_port(adapter, logical_port_id);
3298
3299 if (port) {
3300 ehea_info("adding port with logical port id=%d failed. port "
3301 "already configured as %s.", logical_port_id,
3302 port->netdev->name);
3303 return -EINVAL;
7a291083 3304 }
e542aa6b 3305
1acf2318 3306 eth_dn = ehea_get_eth_dn(adapter, logical_port_id);
7a291083 3307
1acf2318
JBT		 3308 if (!eth_dn) {
3309 ehea_info("no logical port with id %d found", logical_port_id);
3310 return -EINVAL;
3311 }
e542aa6b 3312
1211bb6d
TK		 3313 if (ehea_add_adapter_mr(adapter)) {
3314 ehea_error("creating MR failed");
3315 return -EIO;
3316 }
3317
1acf2318 3318 port = ehea_setup_single_port(adapter, logical_port_id, eth_dn);
7a291083 3319
1eef4e04
JBT		 3320 of_node_put(eth_dn);
3321
1acf2318 3322 if (port) {
508d2b5d 3323 for (i = 0; i < EHEA_MAX_PORTS; i++)
1acf2318
JBT		 3324 if (!adapter->port[i]) {
3325 adapter->port[i] = port;
3326 break;
3327 }
7a291083 3328
1acf2318
JBT		 3329 ehea_info("added %s (logical port id=%d)", port->netdev->name,
3330 logical_port_id);
1211bb6d
TK		 3331 } else {
3332 ehea_remove_adapter_mr(adapter);
e542aa6b 3333 return -EIO;
1211bb6d 3334 }
7a291083 3335
1acf2318
JBT		 3336 return (ssize_t) count;
3337}
3338
3339static ssize_t ehea_remove_port(struct device *dev,
3340 struct device_attribute *attr,
3341 const char *buf, size_t count)
3342{
c7ae011d 3343 struct ehea_adapter *adapter = dev_get_drvdata(dev);
1acf2318
JBT		 3344 struct ehea_port *port;
3345 int i;
3346 u32 logical_port_id;
3347
a8e34fda 3348 sscanf(buf, "%d", &logical_port_id);
1acf2318
JBT		 3349
3350 port = ehea_get_port(adapter, logical_port_id);
3351
3352 if (port) {
3353 ehea_info("removed %s (logical port id=%d)", port->netdev->name,
3354 logical_port_id);
3355
3356 ehea_shutdown_single_port(port);
3357
508d2b5d 3358 for (i = 0; i < EHEA_MAX_PORTS; i++)
1acf2318
JBT		 3359 if (adapter->port[i] == port) {
3360 adapter->port[i] = NULL;
3361 break;
3362 }
3363 } else {
3364 ehea_error("removing port with logical port id=%d failed. port "
3365 "not configured.", logical_port_id);
3366 return -EINVAL;
3367 }
3368
1211bb6d
TK		 3369 ehea_remove_adapter_mr(adapter);
3370
1acf2318
JBT		 3371 return (ssize_t) count;
3372}
3373
3374static DEVICE_ATTR(probe_port, S_IWUSR, NULL, ehea_probe_port);
3375static DEVICE_ATTR(remove_port, S_IWUSR, NULL, ehea_remove_port);
3376
6b08f3ae 3377int ehea_create_device_sysfs(struct of_device *dev)
1acf2318 3378{
6b08f3ae 3379 int ret = device_create_file(&dev->dev, &dev_attr_probe_port);
1acf2318
JBT		 3380 if (ret)
3381 goto out;
3382
6b08f3ae 3383 ret = device_create_file(&dev->dev, &dev_attr_remove_port);
1acf2318 3384out:
7a291083
JBT		 3385 return ret;
3386}
3387
6b08f3ae 3388void ehea_remove_device_sysfs(struct of_device *dev)
1acf2318 3389{
6b08f3ae
JF		 3390 device_remove_file(&dev->dev, &dev_attr_probe_port);
3391 device_remove_file(&dev->dev, &dev_attr_remove_port);
1acf2318
JBT		 3392}
3393
6b08f3ae 3394static int __devinit ehea_probe_adapter(struct of_device *dev,
1acf2318 3395 const struct of_device_id *id)
7a291083
JBT		 3396{
3397 struct ehea_adapter *adapter;
9f9a3b8a 3398 const u64 *adapter_handle;
7a291083
JBT		 3399 int ret;
3400
6b08f3ae 3401 if (!dev || !dev->node) {
1eef4e04
JBT		 3402 ehea_error("Invalid ibmebus device probed");
3403 return -EINVAL;
3404 }
3405
7a291083
JBT		 3406 adapter = kzalloc(sizeof(*adapter), GFP_KERNEL);
3407 if (!adapter) {
3408 ret = -ENOMEM;
6b08f3ae 3409 dev_err(&dev->dev, "no mem for ehea_adapter\n");
7a291083
JBT		 3410 goto out;
3411 }
3412
44c82152
TK		 3413 list_add(&adapter->list, &adapter_list);
3414
6b08f3ae 3415 adapter->ofdev = dev;
1acf2318 3416
6b08f3ae 3417 adapter_handle = of_get_property(dev->node, "ibm,hea-handle",
d1d25aab 3418 NULL);
061bf3cd
TK		 3419 if (adapter_handle)
3420 adapter->handle = *adapter_handle;
3421
3422 if (!adapter->handle) {
6b08f3ae
JF		 3423 dev_err(&dev->dev, "failed getting handle for adapter"
3424 " '%s'\n", dev->node->full_name);
7a291083
JBT		 3425 ret = -ENODEV;
3426 goto out_free_ad;
3427 }
3428
7a291083
JBT		 3429 adapter->pd = EHEA_PD_ID;
3430
c7ae011d 3431 dev_set_drvdata(&dev->dev, adapter);
7a291083 3432
7a291083
JBT		 3433
3434 /* initialize adapter and ports */
3435 /* get adapter properties */
3436 ret = ehea_sense_adapter_attr(adapter);
3437 if (ret) {
898eb71c 3438 dev_err(&dev->dev, "sense_adapter_attr failed: %d\n", ret);
1211bb6d 3439 goto out_free_ad;
7a291083 3440 }
7a291083
JBT		 3441
3442 adapter->neq = ehea_create_eq(adapter,
3443 EHEA_NEQ, EHEA_MAX_ENTRIES_EQ, 1);
3444 if (!adapter->neq) {
1eef4e04 3445 ret = -EIO;
898eb71c 3446 dev_err(&dev->dev, "NEQ creation failed\n");
1211bb6d 3447 goto out_free_ad;
7a291083
JBT		 3448 }
3449
3450 tasklet_init(&adapter->neq_tasklet, ehea_neq_tasklet,
3451 (unsigned long)adapter);
3452
6b08f3ae 3453 ret = ibmebus_request_irq(adapter->neq->attr.ist1,
38515e90 3454 ehea_interrupt_neq, IRQF_DISABLED,
7a291083
JBT		 3455 "ehea_neq", adapter);
3456 if (ret) {
898eb71c 3457 dev_err(&dev->dev, "requesting NEQ IRQ failed\n");
7a291083
JBT		 3458 goto out_kill_eq;
3459 }
3460
1eef4e04
JBT		 3461 ret = ehea_create_device_sysfs(dev);
3462 if (ret)
3bf76b81 3463 goto out_free_irq;
1acf2318 3464
7a291083
JBT		 3465 ret = ehea_setup_ports(adapter);
3466 if (ret) {
898eb71c 3467 dev_err(&dev->dev, "setup_ports failed\n");
1acf2318 3468 goto out_rem_dev_sysfs;
7a291083
JBT		 3469 }
3470
3471 ret = 0;
3472 goto out;
3473
1acf2318
JBT		 3474out_rem_dev_sysfs:
3475 ehea_remove_device_sysfs(dev);
3476
7a291083 3477out_free_irq:
6b08f3ae 3478 ibmebus_free_irq(adapter->neq->attr.ist1, adapter);
7a291083
JBT		 3479
3480out_kill_eq:
3481 ehea_destroy_eq(adapter->neq);
3482
7a291083 3483out_free_ad:
51621fbd 3484 list_del(&adapter->list);
7a291083 3485 kfree(adapter);
21eee2dd 3486
7a291083 3487out:
21eee2dd 3488 ehea_update_firmware_handles();
52e21b1b 3489
7a291083
JBT		 3490 return ret;
3491}
3492
6b08f3ae 3493static int __devexit ehea_remove(struct of_device *dev)
7a291083 3494{
c7ae011d 3495 struct ehea_adapter *adapter = dev_get_drvdata(&dev->dev);
7a291083
JBT		 3496 int i;
3497
1acf2318 3498 for (i = 0; i < EHEA_MAX_PORTS; i++)
7a291083
JBT		 3499 if (adapter->port[i]) {
3500 ehea_shutdown_single_port(adapter->port[i]);
3501 adapter->port[i] = NULL;
3502 }
1acf2318
JBT		 3503
3504 ehea_remove_device_sysfs(dev);
3505
3bf76b81 3506 flush_scheduled_work();
7a291083 3507
6b08f3ae 3508 ibmebus_free_irq(adapter->neq->attr.ist1, adapter);
d4150a27 3509 tasklet_kill(&adapter->neq_tasklet);
7a291083
JBT		 3510
3511 ehea_destroy_eq(adapter->neq);
1211bb6d 3512 ehea_remove_adapter_mr(adapter);
44c82152 3513 list_del(&adapter->list);
7a291083 3514 kfree(adapter);
44c82152 3515
21eee2dd 3516 ehea_update_firmware_handles();
21eee2dd 3517
7a291083
JBT		 3518 return 0;
3519}
3520
21eee2dd
TK		 3521void ehea_crash_handler(void)
3522{
3523 int i;
3524
3525 if (ehea_fw_handles.arr)
3526 for (i = 0; i < ehea_fw_handles.num_entries; i++)
3527 ehea_h_free_resource(ehea_fw_handles.arr[i].adh,
3528 ehea_fw_handles.arr[i].fwh,
3529 FORCE_FREE);
3530
3531 if (ehea_bcmc_regs.arr)
3532 for (i = 0; i < ehea_bcmc_regs.num_entries; i++)
3533 ehea_h_reg_dereg_bcmc(ehea_bcmc_regs.arr[i].adh,
3534 ehea_bcmc_regs.arr[i].port_id,
3535 ehea_bcmc_regs.arr[i].reg_type,
3536 ehea_bcmc_regs.arr[i].macaddr,
3537 0, H_DEREG_BCMC);
3538}
3539
48cfb14f
HH		 3540static int ehea_mem_notifier(struct notifier_block *nb,
3541 unsigned long action, void *data)
3542{
a7c561f2 3543 int ret = NOTIFY_BAD;
d4f12daf 3544 struct memory_notify *arg = data;
a7c561f2
TK		 3545
3546 if (!mutex_trylock(&dlpar_mem_lock)) {
3547 ehea_info("ehea_mem_notifier must not be called parallelized");
3548 goto out;
3549 }
3550
48cfb14f 3551 switch (action) {
d4f12daf
HH		 3552 case MEM_CANCEL_OFFLINE:
3553 ehea_info("memory offlining canceled");
3554 /* Readd canceled memory block */
3555 case MEM_ONLINE:
3556 ehea_info("memory is going online");
3876732c 3557 set_bit(__EHEA_STOP_XFER, &ehea_driver_flags);
d4f12daf 3558 if (ehea_add_sect_bmap(arg->start_pfn, arg->nr_pages))
a7c561f2 3559 goto out_unlock;
d4f12daf
HH		 3560 ehea_rereg_mrs(NULL);
3561 break;
3562 case MEM_GOING_OFFLINE:
3563 ehea_info("memory is going offline");
3876732c 3564 set_bit(__EHEA_STOP_XFER, &ehea_driver_flags);
d4f12daf 3565 if (ehea_rem_sect_bmap(arg->start_pfn, arg->nr_pages))
a7c561f2 3566 goto out_unlock;
48cfb14f
HH		 3567 ehea_rereg_mrs(NULL);
3568 break;
3569 default:
3570 break;
3571 }
52e21b1b
JBT		 3572
3573 ehea_update_firmware_handles();
a7c561f2 3574 ret = NOTIFY_OK;
52e21b1b 3575
a7c561f2
TK		 3576out_unlock:
3577 mutex_unlock(&dlpar_mem_lock);
3578out:
3579 return ret;
48cfb14f
HH		 3580}
3581
3582static struct notifier_block ehea_mem_nb = {
3583 .notifier_call = ehea_mem_notifier,
3584};
3585
2a6f4e49
JBT		 3586static int ehea_reboot_notifier(struct notifier_block *nb,
3587 unsigned long action, void *unused)
3588{
3589 if (action == SYS_RESTART) {
3590 ehea_info("Reboot: freeing all eHEA resources");
3591 ibmebus_unregister_driver(&ehea_driver);
3592 }
3593 return NOTIFY_DONE;
3594}
3595
3596static struct notifier_block ehea_reboot_nb = {
508d2b5d 3597 .notifier_call = ehea_reboot_notifier,
2a6f4e49
JBT		 3598};
3599
7a291083
JBT		 3600static int check_module_parm(void)
3601{
3602 int ret = 0;
3603
3604 if ((rq1_entries < EHEA_MIN_ENTRIES_QP) ||
3605 (rq1_entries > EHEA_MAX_ENTRIES_RQ1)) {
3606 ehea_info("Bad parameter: rq1_entries");
3607 ret = -EINVAL;
3608 }
3609 if ((rq2_entries < EHEA_MIN_ENTRIES_QP) ||
3610 (rq2_entries > EHEA_MAX_ENTRIES_RQ2)) {
3611 ehea_info("Bad parameter: rq2_entries");
3612 ret = -EINVAL;
3613 }
3614 if ((rq3_entries < EHEA_MIN_ENTRIES_QP) ||
3615 (rq3_entries > EHEA_MAX_ENTRIES_RQ3)) {
3616 ehea_info("Bad parameter: rq3_entries");
3617 ret = -EINVAL;
3618 }
3619 if ((sq_entries < EHEA_MIN_ENTRIES_QP) ||
3620 (sq_entries > EHEA_MAX_ENTRIES_SQ)) {
3621 ehea_info("Bad parameter: sq_entries");
3622 ret = -EINVAL;
3623 }
3624
3625 return ret;
3626}
3627
4c3ca4da
JBT		 3628static ssize_t ehea_show_capabilities(struct device_driver *drv,
3629 char *buf)
3630{
3631 return sprintf(buf, "%d", EHEA_CAPABILITIES);
3632}
3633
3634static DRIVER_ATTR(capabilities, S_IRUSR | S_IRGRP | S_IROTH,
3635 ehea_show_capabilities, NULL);
3636
7a291083
JBT		 3637int __init ehea_module_init(void)
3638{
3639 int ret;
3640
3641 printk(KERN_INFO "IBM eHEA ethernet device driver (Release %s)\n",
3642 DRV_VERSION);
3643
44c82152
TK		 3644
3645 INIT_WORK(&ehea_rereg_mr_task, ehea_rereg_mrs);
21eee2dd
TK		 3646 memset(&ehea_fw_handles, 0, sizeof(ehea_fw_handles));
3647 memset(&ehea_bcmc_regs, 0, sizeof(ehea_bcmc_regs));
3648
9f71a568 3649 mutex_init(&ehea_fw_handles.lock);
5c2cec14 3650 spin_lock_init(&ehea_bcmc_regs.lock);
44c82152 3651
7a291083
JBT		 3652 ret = check_module_parm();
3653 if (ret)
3654 goto out;
44c82152
TK		 3655
3656 ret = ehea_create_busmap();
3657 if (ret)
3658 goto out;
3659
21eee2dd
TK		 3660 ret = register_reboot_notifier(&ehea_reboot_nb);
3661 if (ret)
3662 ehea_info("failed registering reboot notifier");
3663
48cfb14f
HH		 3664 ret = register_memory_notifier(&ehea_mem_nb);
3665 if (ret)
3666 ehea_info("failed registering memory remove notifier");
3667
21eee2dd
TK		 3668 ret = crash_shutdown_register(&ehea_crash_handler);
3669 if (ret)
3670 ehea_info("failed registering crash handler");
2a6f4e49 3671
7a291083 3672 ret = ibmebus_register_driver(&ehea_driver);
4c3ca4da 3673 if (ret) {
7a291083 3674 ehea_error("failed registering eHEA device driver on ebus");
21eee2dd 3675 goto out2;
4c3ca4da
JBT		 3676 }
3677
3678 ret = driver_create_file(&ehea_driver.driver,
3679 &driver_attr_capabilities);
3680 if (ret) {
3681 ehea_error("failed to register capabilities attribute, ret=%d",
3682 ret);
21eee2dd 3683 goto out3;
4c3ca4da 3684 }
7a291083 3685
21eee2dd
TK		 3686 return ret;
3687
3688out3:
3689 ibmebus_unregister_driver(&ehea_driver);
3690out2:
48cfb14f 3691 unregister_memory_notifier(&ehea_mem_nb);
21eee2dd
TK		 3692 unregister_reboot_notifier(&ehea_reboot_nb);
3693 crash_shutdown_unregister(&ehea_crash_handler);
7a291083
JBT		 3694out:
3695 return ret;
3696}
3697
3698static void __exit ehea_module_exit(void)
3699{
21eee2dd
TK		 3700 int ret;
3701
3bf76b81 3702 flush_scheduled_work();
4c3ca4da 3703 driver_remove_file(&ehea_driver.driver, &driver_attr_capabilities);
7a291083 3704 ibmebus_unregister_driver(&ehea_driver);
2a6f4e49 3705 unregister_reboot_notifier(&ehea_reboot_nb);
21eee2dd
TK		 3706 ret = crash_shutdown_unregister(&ehea_crash_handler);
3707 if (ret)
3708 ehea_info("failed unregistering crash handler");
48cfb14f 3709 unregister_memory_notifier(&ehea_mem_nb);
21eee2dd
TK		 3710 kfree(ehea_fw_handles.arr);
3711 kfree(ehea_bcmc_regs.arr);
44c82152 3712 ehea_destroy_busmap();
7a291083
JBT		 3713}
3714
3715module_init(ehea_module_init);
3716module_exit(ehea_module_exit);
Linux kernel - Deliverables
This page took 0.652075 seconds and 5 git commands to generate.