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Merge branch 'fix' of git://git.kernel.org/pub/scm/linux/kernel/git/ycmiao/pxa-linux-2.6
[net-next-2.6.git] / drivers / net / ehea / ehea_main.c
CommitLineData
7a291083
JBT		 1/*
2 * linux/drivers/net/ehea/ehea_main.c
3 *
4 * eHEA ethernet device driver for IBM eServer System p
5 *
6 * (C) Copyright IBM Corp. 2006
7 *
8 * Authors:
508d2b5d
DM		 9 * Christoph Raisch <raisch@de.ibm.com>
10 * Jan-Bernd Themann <themann@de.ibm.com>
11 * Thomas Klein <tklein@de.ibm.com>
7a291083
JBT		 12 *
13 *
14 * This program is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License as published by
16 * the Free Software Foundation; either version 2, or (at your option)
17 * any later version.
18 *
19 * This program is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU General Public License for more details.
23 *
24 * You should have received a copy of the GNU General Public License
25 * along with this program; if not, write to the Free Software
26 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
27 */
28
29#include <linux/in.h>
30#include <linux/ip.h>
31#include <linux/tcp.h>
32#include <linux/udp.h>
33#include <linux/if.h>
34#include <linux/list.h>
5a0e3ad6 35#include <linux/slab.h>
7a291083 36#include <linux/if_ether.h>
2a6f4e49
JBT		 37#include <linux/notifier.h>
38#include <linux/reboot.h>
48cfb14f 39#include <linux/memory.h>
21eee2dd 40#include <asm/kexec.h>
06f89edf 41#include <linux/mutex.h>
2a6f4e49 42
7a291083
JBT		 43#include <net/ip.h>
44
45#include "ehea.h"
46#include "ehea_qmr.h"
47#include "ehea_phyp.h"
48
49
50MODULE_LICENSE("GPL");
51MODULE_AUTHOR("Christoph Raisch <raisch@de.ibm.com>");
52MODULE_DESCRIPTION("IBM eServer HEA Driver");
53MODULE_VERSION(DRV_VERSION);
54
55
56static int msg_level = -1;
57static int rq1_entries = EHEA_DEF_ENTRIES_RQ1;
58static int rq2_entries = EHEA_DEF_ENTRIES_RQ2;
59static int rq3_entries = EHEA_DEF_ENTRIES_RQ3;
60static int sq_entries = EHEA_DEF_ENTRIES_SQ;
508d2b5d
DM		 61static int use_mcs;
62static int use_lro;
d4dc4ec9 63static int lro_max_aggr = EHEA_LRO_MAX_AGGR;
18604c54 64static int num_tx_qps = EHEA_NUM_TX_QP;
508d2b5d 65static int prop_carrier_state;
7a291083
JBT		 66
67module_param(msg_level, int, 0);
68module_param(rq1_entries, int, 0);
69module_param(rq2_entries, int, 0);
70module_param(rq3_entries, int, 0);
71module_param(sq_entries, int, 0);
8759cf76 72module_param(prop_carrier_state, int, 0);
18604c54 73module_param(use_mcs, int, 0);
d4dc4ec9
JBT		 74module_param(use_lro, int, 0);
75module_param(lro_max_aggr, int, 0);
18604c54 76module_param(num_tx_qps, int, 0);
7a291083 77
18604c54 78MODULE_PARM_DESC(num_tx_qps, "Number of TX-QPS");
7a291083 79MODULE_PARM_DESC(msg_level, "msg_level");
8759cf76
JBT		 80MODULE_PARM_DESC(prop_carrier_state, "Propagate carrier state of physical "
81 "port to stack. 1:yes, 0:no. Default = 0 ");
7a291083
JBT		 82MODULE_PARM_DESC(rq3_entries, "Number of entries for Receive Queue 3 "
83 "[2^x - 1], x = [6..14]. Default = "
84 __MODULE_STRING(EHEA_DEF_ENTRIES_RQ3) ")");
85MODULE_PARM_DESC(rq2_entries, "Number of entries for Receive Queue 2 "
86 "[2^x - 1], x = [6..14]. Default = "
87 __MODULE_STRING(EHEA_DEF_ENTRIES_RQ2) ")");
88MODULE_PARM_DESC(rq1_entries, "Number of entries for Receive Queue 1 "
89 "[2^x - 1], x = [6..14]. Default = "
90 __MODULE_STRING(EHEA_DEF_ENTRIES_RQ1) ")");
91MODULE_PARM_DESC(sq_entries, " Number of entries for the Send Queue "
92 "[2^x - 1], x = [6..14]. Default = "
93 __MODULE_STRING(EHEA_DEF_ENTRIES_SQ) ")");
18072a5b 94MODULE_PARM_DESC(use_mcs, " 0:NAPI, 1:Multiple receive queues, Default = 0 ");
7a291083 95
d4dc4ec9
JBT		 96MODULE_PARM_DESC(lro_max_aggr, " LRO: Max packets to be aggregated. Default = "
97 __MODULE_STRING(EHEA_LRO_MAX_AGGR));
98MODULE_PARM_DESC(use_lro, " Large Receive Offload, 1: enable, 0: disable, "
99 "Default = 0");
100
508d2b5d 101static int port_name_cnt;
44c82152 102static LIST_HEAD(adapter_list);
48e4cc77 103static unsigned long ehea_driver_flags;
44c82152 104struct work_struct ehea_rereg_mr_task;
06f89edf 105static DEFINE_MUTEX(dlpar_mem_lock);
21eee2dd
TK		 106struct ehea_fw_handle_array ehea_fw_handles;
107struct ehea_bcmc_reg_array ehea_bcmc_regs;
108
d1dea38d 109
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 = {
4018294b
GL		 125 .driver = {
126 .name = "ehea",
127 .owner = THIS_MODULE,
128 .of_match_table = ehea_device_table,
129 },
d1dea38d
TK		 130 .probe = ehea_probe_adapter,
131 .remove = ehea_remove,
132};
133
508d2b5d
DM		 134void ehea_dump(void *adr, int len, char *msg)
135{
7a291083
JBT		 136 int x;
137 unsigned char *deb = adr;
138 for (x = 0; x < len; x += 16) {
a1c5a893 139 printk(DRV_NAME " %s adr=%p ofs=%04x %016llx %016llx\n", msg,
508d2b5d 140 deb, x, *((u64 *)&deb[0]), *((u64 *)&deb[8]));
7a291083
JBT		 141 deb += 16;
142 }
143}
144
2f69ae01
JBT		 145void ehea_schedule_port_reset(struct ehea_port *port)
146{
147 if (!test_bit(__EHEA_DISABLE_PORT_RESET, &port->flags))
148 schedule_work(&port->reset_task);
149}
150
21eee2dd
TK		 151static void ehea_update_firmware_handles(void)
152{
153 struct ehea_fw_handle_entry *arr = NULL;
154 struct ehea_adapter *adapter;
155 int num_adapters = 0;
156 int num_ports = 0;
157 int num_portres = 0;
158 int i = 0;
159 int num_fw_handles, k, l;
160
161 /* Determine number of handles */
52e21b1b
JBT		 162 mutex_lock(&ehea_fw_handles.lock);
163
21eee2dd
TK		 164 list_for_each_entry(adapter, &adapter_list, list) {
165 num_adapters++;
166
167 for (k = 0; k < EHEA_MAX_PORTS; k++) {
168 struct ehea_port *port = adapter->port[k];
169
170 if (!port || (port->state != EHEA_PORT_UP))
171 continue;
172
173 num_ports++;
174 num_portres += port->num_def_qps + port->num_add_tx_qps;
175 }
176 }
177
178 num_fw_handles = num_adapters * EHEA_NUM_ADAPTER_FW_HANDLES +
179 num_ports * EHEA_NUM_PORT_FW_HANDLES +
180 num_portres * EHEA_NUM_PORTRES_FW_HANDLES;
181
182 if (num_fw_handles) {
183 arr = kzalloc(num_fw_handles * sizeof(*arr), GFP_KERNEL);
184 if (!arr)
52e21b1b 185 goto out; /* Keep the existing array */
21eee2dd
TK		 186 } else
187 goto out_update;
188
189 list_for_each_entry(adapter, &adapter_list, list) {
52e21b1b
JBT		 190 if (num_adapters == 0)
191 break;
192
21eee2dd
TK		 193 for (k = 0; k < EHEA_MAX_PORTS; k++) {
194 struct ehea_port *port = adapter->port[k];
195
8e95a202
JP		 196 if (!port || (port->state != EHEA_PORT_UP) ||
197 (num_ports == 0))
21eee2dd
TK		 198 continue;
199
200 for (l = 0;
201 l < port->num_def_qps + port->num_add_tx_qps;
202 l++) {
203 struct ehea_port_res *pr = &port->port_res[l];
204
205 arr[i].adh = adapter->handle;
206 arr[i++].fwh = pr->qp->fw_handle;
207 arr[i].adh = adapter->handle;
208 arr[i++].fwh = pr->send_cq->fw_handle;
209 arr[i].adh = adapter->handle;
210 arr[i++].fwh = pr->recv_cq->fw_handle;
211 arr[i].adh = adapter->handle;
212 arr[i++].fwh = pr->eq->fw_handle;
213 arr[i].adh = adapter->handle;
214 arr[i++].fwh = pr->send_mr.handle;
215 arr[i].adh = adapter->handle;
216 arr[i++].fwh = pr->recv_mr.handle;
217 }
218 arr[i].adh = adapter->handle;
219 arr[i++].fwh = port->qp_eq->fw_handle;
52e21b1b 220 num_ports--;
21eee2dd
TK		 221 }
222
223 arr[i].adh = adapter->handle;
224 arr[i++].fwh = adapter->neq->fw_handle;
225
226 if (adapter->mr.handle) {
227 arr[i].adh = adapter->handle;
228 arr[i++].fwh = adapter->mr.handle;
229 }
52e21b1b 230 num_adapters--;
21eee2dd
TK		 231 }
232
233out_update:
234 kfree(ehea_fw_handles.arr);
235 ehea_fw_handles.arr = arr;
236 ehea_fw_handles.num_entries = i;
52e21b1b
JBT		 237out:
238 mutex_unlock(&ehea_fw_handles.lock);
21eee2dd
TK		 239}
240
241static void ehea_update_bcmc_registrations(void)
242{
52e21b1b 243 unsigned long flags;
21eee2dd
TK		 244 struct ehea_bcmc_reg_entry *arr = NULL;
245 struct ehea_adapter *adapter;
246 struct ehea_mc_list *mc_entry;
247 int num_registrations = 0;
248 int i = 0;
249 int k;
250
52e21b1b
JBT		 251 spin_lock_irqsave(&ehea_bcmc_regs.lock, flags);
252
21eee2dd
TK		 253 /* Determine number of registrations */
254 list_for_each_entry(adapter, &adapter_list, list)
255 for (k = 0; k < EHEA_MAX_PORTS; k++) {
256 struct ehea_port *port = adapter->port[k];
257
258 if (!port || (port->state != EHEA_PORT_UP))
259 continue;
260
261 num_registrations += 2; /* Broadcast registrations */
262
263 list_for_each_entry(mc_entry, &port->mc_list->list,list)
264 num_registrations += 2;
265 }
266
267 if (num_registrations) {
5c2cec14 268 arr = kzalloc(num_registrations * sizeof(*arr), GFP_ATOMIC);
21eee2dd 269 if (!arr)
52e21b1b 270 goto out; /* Keep the existing array */
21eee2dd
TK		 271 } else
272 goto out_update;
273
274 list_for_each_entry(adapter, &adapter_list, list) {
275 for (k = 0; k < EHEA_MAX_PORTS; k++) {
276 struct ehea_port *port = adapter->port[k];
277
278 if (!port || (port->state != EHEA_PORT_UP))
279 continue;
280
52e21b1b
JBT		 281 if (num_registrations == 0)
282 goto out_update;
283
21eee2dd
TK		 284 arr[i].adh = adapter->handle;
285 arr[i].port_id = port->logical_port_id;
286 arr[i].reg_type = EHEA_BCMC_BROADCAST |
287 EHEA_BCMC_UNTAGGED;
288 arr[i++].macaddr = port->mac_addr;
289
290 arr[i].adh = adapter->handle;
291 arr[i].port_id = port->logical_port_id;
292 arr[i].reg_type = EHEA_BCMC_BROADCAST |
293 EHEA_BCMC_VLANID_ALL;
294 arr[i++].macaddr = port->mac_addr;
52e21b1b 295 num_registrations -= 2;
21eee2dd
TK		 296
297 list_for_each_entry(mc_entry,
298 &port->mc_list->list, list) {
52e21b1b
JBT		 299 if (num_registrations == 0)
300 goto out_update;
301
21eee2dd
TK		 302 arr[i].adh = adapter->handle;
303 arr[i].port_id = port->logical_port_id;
304 arr[i].reg_type = EHEA_BCMC_SCOPE_ALL |
305 EHEA_BCMC_MULTICAST |
306 EHEA_BCMC_UNTAGGED;
307 arr[i++].macaddr = mc_entry->macaddr;
308
309 arr[i].adh = adapter->handle;
310 arr[i].port_id = port->logical_port_id;
311 arr[i].reg_type = EHEA_BCMC_SCOPE_ALL |
312 EHEA_BCMC_MULTICAST |
313 EHEA_BCMC_VLANID_ALL;
314 arr[i++].macaddr = mc_entry->macaddr;
52e21b1b 315 num_registrations -= 2;
21eee2dd
TK		 316 }
317 }
318 }
319
320out_update:
321 kfree(ehea_bcmc_regs.arr);
322 ehea_bcmc_regs.arr = arr;
323 ehea_bcmc_regs.num_entries = i;
52e21b1b
JBT		 324out:
325 spin_unlock_irqrestore(&ehea_bcmc_regs.lock, flags);
21eee2dd
TK		 326}
327
7a291083
JBT		 328static struct net_device_stats *ehea_get_stats(struct net_device *dev)
329{
330 struct ehea_port *port = netdev_priv(dev);
331 struct net_device_stats *stats = &port->stats;
332 struct hcp_ehea_port_cb2 *cb2;
7393b87c 333 u64 hret, rx_packets, tx_packets;
7a291083
JBT		 334 int i;
335
336 memset(stats, 0, sizeof(*stats));
337
3faf2693 338 cb2 = (void *)get_zeroed_page(GFP_ATOMIC);
7a291083
JBT		 339 if (!cb2) {
340 ehea_error("no mem for cb2");
341 goto out;
342 }
343
344 hret = ehea_h_query_ehea_port(port->adapter->handle,
345 port->logical_port_id,
346 H_PORT_CB2, H_PORT_CB2_ALL, cb2);
347 if (hret != H_SUCCESS) {
348 ehea_error("query_ehea_port failed");
349 goto out_herr;
350 }
351
352 if (netif_msg_hw(port))
353 ehea_dump(cb2, sizeof(*cb2), "net_device_stats");
354
355 rx_packets = 0;
356 for (i = 0; i < port->num_def_qps; i++)
357 rx_packets += port->port_res[i].rx_packets;
358
7393b87c
TK		 359 tx_packets = 0;
360 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
361 tx_packets += port->port_res[i].tx_packets;
362
363 stats->tx_packets = tx_packets;
7a291083
JBT		 364 stats->multicast = cb2->rxmcp;
365 stats->rx_errors = cb2->rxuerr;
366 stats->rx_bytes = cb2->rxo;
367 stats->tx_bytes = cb2->txo;
368 stats->rx_packets = rx_packets;
369
370out_herr:
3faf2693 371 free_page((unsigned long)cb2);
7a291083
JBT		 372out:
373 return stats;
374}
375
376static void ehea_refill_rq1(struct ehea_port_res *pr, int index, int nr_of_wqes)
377{
378 struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
379 struct net_device *dev = pr->port->netdev;
380 int max_index_mask = pr->rq1_skba.len - 1;
2c69448b
JBT		 381 int fill_wqes = pr->rq1_skba.os_skbs + nr_of_wqes;
382 int adder = 0;
7a291083
JBT		 383 int i;
384
2c69448b
JBT		 385 pr->rq1_skba.os_skbs = 0;
386
387 if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) {
44fb3126
TK		 388 if (nr_of_wqes > 0)
389 pr->rq1_skba.index = index;
2c69448b 390 pr->rq1_skba.os_skbs = fill_wqes;
7a291083 391 return;
2c69448b 392 }
7a291083 393
2c69448b 394 for (i = 0; i < fill_wqes; i++) {
7a291083
JBT		 395 if (!skb_arr_rq1[index]) {
396 skb_arr_rq1[index] = netdev_alloc_skb(dev,
397 EHEA_L_PKT_SIZE);
398 if (!skb_arr_rq1[index]) {
2c69448b 399 pr->rq1_skba.os_skbs = fill_wqes - i;
7a291083
JBT		 400 break;
401 }
402 }
403 index--;
404 index &= max_index_mask;
2c69448b 405 adder++;
7a291083 406 }
2c69448b
JBT		 407
408 if (adder == 0)
409 return;
410
7a291083 411 /* Ring doorbell */
2c69448b 412 ehea_update_rq1a(pr->qp, adder);
7a291083
JBT		 413}
414
e2878806 415static void ehea_init_fill_rq1(struct ehea_port_res *pr, int nr_rq1a)
7a291083 416{
7a291083
JBT		 417 struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
418 struct net_device *dev = pr->port->netdev;
419 int i;
420
421 for (i = 0; i < pr->rq1_skba.len; i++) {
422 skb_arr_rq1[i] = netdev_alloc_skb(dev, EHEA_L_PKT_SIZE);
e2878806
TK		 423 if (!skb_arr_rq1[i])
424 break;
7a291083
JBT		 425 }
426 /* Ring doorbell */
427 ehea_update_rq1a(pr->qp, nr_rq1a);
7a291083
JBT		 428}
429
430static int ehea_refill_rq_def(struct ehea_port_res *pr,
431 struct ehea_q_skb_arr *q_skba, int rq_nr,
432 int num_wqes, int wqe_type, int packet_size)
433{
434 struct net_device *dev = pr->port->netdev;
435 struct ehea_qp *qp = pr->qp;
436 struct sk_buff **skb_arr = q_skba->arr;
437 struct ehea_rwqe *rwqe;
438 int i, index, max_index_mask, fill_wqes;
2c69448b 439 int adder = 0;
7a291083
JBT		 440 int ret = 0;
441
442 fill_wqes = q_skba->os_skbs + num_wqes;
2c69448b 443 q_skba->os_skbs = 0;
7a291083 444
2c69448b
JBT		 445 if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) {
446 q_skba->os_skbs = fill_wqes;
7a291083 447 return ret;
2c69448b 448 }
7a291083
JBT		 449
450 index = q_skba->index;
451 max_index_mask = q_skba->len - 1;
452 for (i = 0; i < fill_wqes; i++) {
2c69448b 453 u64 tmp_addr;
89d71a66
ED		 454 struct sk_buff *skb;
455
456 skb = netdev_alloc_skb_ip_align(dev, packet_size);
7a291083 457 if (!skb) {
7a291083 458 q_skba->os_skbs = fill_wqes - i;
e2878806
TK		 459 if (q_skba->os_skbs == q_skba->len - 2) {
460 ehea_info("%s: rq%i ran dry - no mem for skb",
461 pr->port->netdev->name, rq_nr);
462 ret = -ENOMEM;
463 }
7a291083
JBT		 464 break;
465 }
7a291083
JBT		 466
467 skb_arr[index] = skb;
2c69448b
JBT		 468 tmp_addr = ehea_map_vaddr(skb->data);
469 if (tmp_addr == -1) {
470 dev_kfree_skb(skb);
471 q_skba->os_skbs = fill_wqes - i;
472 ret = 0;
473 break;
474 }
7a291083
JBT		 475
476 rwqe = ehea_get_next_rwqe(qp, rq_nr);
477 rwqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, wqe_type)
d1d25aab 478 | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, index);
7a291083 479 rwqe->sg_list[0].l_key = pr->recv_mr.lkey;
2c69448b 480 rwqe->sg_list[0].vaddr = tmp_addr;
7a291083
JBT		 481 rwqe->sg_list[0].len = packet_size;
482 rwqe->data_segments = 1;
483
484 index++;
485 index &= max_index_mask;
2c69448b 486 adder++;
7a291083 487 }
44c82152 488
7a291083 489 q_skba->index = index;
2c69448b
JBT		 490 if (adder == 0)
491 goto out;
7a291083
JBT		 492
493 /* Ring doorbell */
494 iosync();
495 if (rq_nr == 2)
2c69448b 496 ehea_update_rq2a(pr->qp, adder);
7a291083 497 else
2c69448b 498 ehea_update_rq3a(pr->qp, adder);
44c82152 499out:
7a291083
JBT		 500 return ret;
501}
502
503
504static int ehea_refill_rq2(struct ehea_port_res *pr, int nr_of_wqes)
505{
506 return ehea_refill_rq_def(pr, &pr->rq2_skba, 2,
507 nr_of_wqes, EHEA_RWQE2_TYPE,
89d71a66 508 EHEA_RQ2_PKT_SIZE);
7a291083
JBT		 509}
510
511
512static int ehea_refill_rq3(struct ehea_port_res *pr, int nr_of_wqes)
513{
514 return ehea_refill_rq_def(pr, &pr->rq3_skba, 3,
515 nr_of_wqes, EHEA_RWQE3_TYPE,
89d71a66 516 EHEA_MAX_PACKET_SIZE);
7a291083
JBT		 517}
518
519static inline int ehea_check_cqe(struct ehea_cqe *cqe, int *rq_num)
520{
521 *rq_num = (cqe->type & EHEA_CQE_TYPE_RQ) >> 5;
522 if ((cqe->status & EHEA_CQE_STAT_ERR_MASK) == 0)
523 return 0;
524 if (((cqe->status & EHEA_CQE_STAT_ERR_TCP) != 0) &&
525 (cqe->header_length == 0))
526 return 0;
527 return -EINVAL;
528}
529
530static inline void ehea_fill_skb(struct net_device *dev,
531 struct sk_buff *skb, struct ehea_cqe *cqe)
532{
533 int length = cqe->num_bytes_transfered - 4; /*remove CRC */
534
535 skb_put(skb, length);
536 skb->ip_summed = CHECKSUM_UNNECESSARY;
537 skb->protocol = eth_type_trans(skb, dev);
538}
539
540static inline struct sk_buff *get_skb_by_index(struct sk_buff **skb_array,
541 int arr_len,
542 struct ehea_cqe *cqe)
543{
544 int skb_index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, cqe->wr_id);
545 struct sk_buff *skb;
546 void *pref;
547 int x;
548
549 x = skb_index + 1;
550 x &= (arr_len - 1);
551
552 pref = skb_array[x];
0b2febf3
HH		 553 if (pref) {
554 prefetchw(pref);
555 prefetchw(pref + EHEA_CACHE_LINE);
556
557 pref = (skb_array[x]->data);
558 prefetch(pref);
559 prefetch(pref + EHEA_CACHE_LINE);
560 prefetch(pref + EHEA_CACHE_LINE * 2);
561 prefetch(pref + EHEA_CACHE_LINE * 3);
562 }
563
7a291083
JBT		 564 skb = skb_array[skb_index];
565 skb_array[skb_index] = NULL;
566 return skb;
567}
568
569static inline struct sk_buff *get_skb_by_index_ll(struct sk_buff **skb_array,
570 int arr_len, int wqe_index)
571{
572 struct sk_buff *skb;
573 void *pref;
574 int x;
575
576 x = wqe_index + 1;
577 x &= (arr_len - 1);
578
579 pref = skb_array[x];
0b2febf3
HH		 580 if (pref) {
581 prefetchw(pref);
582 prefetchw(pref + EHEA_CACHE_LINE);
7a291083 583
0b2febf3
HH		 584 pref = (skb_array[x]->data);
585 prefetchw(pref);
586 prefetchw(pref + EHEA_CACHE_LINE);
587 }
7a291083
JBT		 588
589 skb = skb_array[wqe_index];
590 skb_array[wqe_index] = NULL;
591 return skb;
592}
593
594static int ehea_treat_poll_error(struct ehea_port_res *pr, int rq,
595 struct ehea_cqe *cqe, int *processed_rq2,
596 int *processed_rq3)
597{
598 struct sk_buff *skb;
599
acbddb59
JBT		 600 if (cqe->status & EHEA_CQE_STAT_ERR_TCP)
601 pr->p_stats.err_tcp_cksum++;
602 if (cqe->status & EHEA_CQE_STAT_ERR_IP)
603 pr->p_stats.err_ip_cksum++;
604 if (cqe->status & EHEA_CQE_STAT_ERR_CRC)
605 pr->p_stats.err_frame_crc++;
606
7a291083
JBT		 607 if (rq == 2) {
608 *processed_rq2 += 1;
609 skb = get_skb_by_index(pr->rq2_skba.arr, pr->rq2_skba.len, cqe);
610 dev_kfree_skb(skb);
611 } else if (rq == 3) {
612 *processed_rq3 += 1;
613 skb = get_skb_by_index(pr->rq3_skba.arr, pr->rq3_skba.len, cqe);
614 dev_kfree_skb(skb);
615 }
616
617 if (cqe->status & EHEA_CQE_STAT_FAT_ERR_MASK) {
58dd8258
TK		 618 if (netif_msg_rx_err(pr->port)) {
619 ehea_error("Critical receive error for QP %d. "
620 "Resetting port.", pr->qp->init_attr.qp_nr);
621 ehea_dump(cqe, sizeof(*cqe), "CQE");
622 }
2f69ae01 623 ehea_schedule_port_reset(pr->port);
7a291083
JBT		 624 return 1;
625 }
626
627 return 0;
628}
629
d4dc4ec9
JBT		 630static int get_skb_hdr(struct sk_buff *skb, void **iphdr,
631 void **tcph, u64 *hdr_flags, void *priv)
632{
633 struct ehea_cqe *cqe = priv;
634 unsigned int ip_len;
635 struct iphdr *iph;
636
637 /* non tcp/udp packets */
638 if (!cqe->header_length)
639 return -1;
640
641 /* non tcp packet */
642 skb_reset_network_header(skb);
643 iph = ip_hdr(skb);
644 if (iph->protocol != IPPROTO_TCP)
645 return -1;
646
647 ip_len = ip_hdrlen(skb);
648 skb_set_transport_header(skb, ip_len);
649 *tcph = tcp_hdr(skb);
650
651 /* check if ip header and tcp header are complete */
3ff2cd23 652 if (ntohs(iph->tot_len) < ip_len + tcp_hdrlen(skb))
d4dc4ec9
JBT		 653 return -1;
654
655 *hdr_flags = LRO_IPV4 | LRO_TCP;
656 *iphdr = iph;
657
658 return 0;
659}
660
661static void ehea_proc_skb(struct ehea_port_res *pr, struct ehea_cqe *cqe,
662 struct sk_buff *skb)
663{
8e95a202
JP		 664 int vlan_extracted = ((cqe->status & EHEA_CQE_VLAN_TAG_XTRACT) &&
665 pr->port->vgrp);
d4dc4ec9
JBT		 666
667 if (use_lro) {
668 if (vlan_extracted)
669 lro_vlan_hwaccel_receive_skb(&pr->lro_mgr, skb,
670 pr->port->vgrp,
671 cqe->vlan_tag,
672 cqe);
673 else
674 lro_receive_skb(&pr->lro_mgr, skb, cqe);
675 } else {
676 if (vlan_extracted)
677 vlan_hwaccel_receive_skb(skb, pr->port->vgrp,
678 cqe->vlan_tag);
679 else
680 netif_receive_skb(skb);
681 }
682}
683
bea3348e
SH		 684static int ehea_proc_rwqes(struct net_device *dev,
685 struct ehea_port_res *pr,
686 int budget)
7a291083 687{
18604c54 688 struct ehea_port *port = pr->port;
7a291083
JBT		 689 struct ehea_qp *qp = pr->qp;
690 struct ehea_cqe *cqe;
691 struct sk_buff *skb;
692 struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
693 struct sk_buff **skb_arr_rq2 = pr->rq2_skba.arr;
694 struct sk_buff **skb_arr_rq3 = pr->rq3_skba.arr;
695 int skb_arr_rq1_len = pr->rq1_skba.len;
696 int skb_arr_rq2_len = pr->rq2_skba.len;
697 int skb_arr_rq3_len = pr->rq3_skba.len;
698 int processed, processed_rq1, processed_rq2, processed_rq3;
bea3348e 699 int wqe_index, last_wqe_index, rq, port_reset;
7a291083
JBT		 700
701 processed = processed_rq1 = processed_rq2 = processed_rq3 = 0;
702 last_wqe_index = 0;
7a291083 703
7a291083 704 cqe = ehea_poll_rq1(qp, &wqe_index);
bea3348e 705 while ((processed < budget) && cqe) {
7a291083
JBT		 706 ehea_inc_rq1(qp);
707 processed_rq1++;
708 processed++;
7a291083
JBT		 709 if (netif_msg_rx_status(port))
710 ehea_dump(cqe, sizeof(*cqe), "CQE");
711
712 last_wqe_index = wqe_index;
713 rmb();
714 if (!ehea_check_cqe(cqe, &rq)) {
508d2b5d
DM		 715 if (rq == 1) {
716 /* LL RQ1 */
7a291083
JBT		 717 skb = get_skb_by_index_ll(skb_arr_rq1,
718 skb_arr_rq1_len,
719 wqe_index);
720 if (unlikely(!skb)) {
721 if (netif_msg_rx_err(port))
722 ehea_error("LL rq1: skb=NULL");
18604c54 723
bea3348e 724 skb = netdev_alloc_skb(dev,
7a291083
JBT		 725 EHEA_L_PKT_SIZE);
726 if (!skb)
727 break;
728 }
508d2b5d 729 skb_copy_to_linear_data(skb, ((char *)cqe) + 64,
d1d25aab 730 cqe->num_bytes_transfered - 4);
bea3348e 731 ehea_fill_skb(dev, skb, cqe);
508d2b5d
DM		 732 } else if (rq == 2) {
733 /* RQ2 */
7a291083
JBT		 734 skb = get_skb_by_index(skb_arr_rq2,
735 skb_arr_rq2_len, cqe);
736 if (unlikely(!skb)) {
737 if (netif_msg_rx_err(port))
738 ehea_error("rq2: skb=NULL");
739 break;
740 }
bea3348e 741 ehea_fill_skb(dev, skb, cqe);
7a291083 742 processed_rq2++;
508d2b5d
DM		 743 } else {
744 /* RQ3 */
7a291083
JBT		 745 skb = get_skb_by_index(skb_arr_rq3,
746 skb_arr_rq3_len, cqe);
747 if (unlikely(!skb)) {
748 if (netif_msg_rx_err(port))
749 ehea_error("rq3: skb=NULL");
750 break;
751 }
bea3348e 752 ehea_fill_skb(dev, skb, cqe);
7a291083
JBT		 753 processed_rq3++;
754 }
755
d4dc4ec9 756 ehea_proc_skb(pr, cqe, skb);
18604c54 757 } else {
acbddb59 758 pr->p_stats.poll_receive_errors++;
7a291083
JBT		 759 port_reset = ehea_treat_poll_error(pr, rq, cqe,
760 &processed_rq2,
761 &processed_rq3);
762 if (port_reset)
763 break;
764 }
765 cqe = ehea_poll_rq1(qp, &wqe_index);
766 }
d4dc4ec9
JBT		 767 if (use_lro)
768 lro_flush_all(&pr->lro_mgr);
7a291083 769
7a291083
JBT		 770 pr->rx_packets += processed;
771
772 ehea_refill_rq1(pr, last_wqe_index, processed_rq1);
773 ehea_refill_rq2(pr, processed_rq2);
774 ehea_refill_rq3(pr, processed_rq3);
775
bea3348e 776 return processed;
7a291083
JBT		 777}
778
18604c54 779static struct ehea_cqe *ehea_proc_cqes(struct ehea_port_res *pr, int my_quota)
7a291083 780{
acbddb59 781 struct sk_buff *skb;
7a291083
JBT		 782 struct ehea_cq *send_cq = pr->send_cq;
783 struct ehea_cqe *cqe;
18604c54 784 int quota = my_quota;
7a291083
JBT		 785 int cqe_counter = 0;
786 int swqe_av = 0;
acbddb59 787 int index;
7a291083
JBT		 788 unsigned long flags;
789
18604c54 790 cqe = ehea_poll_cq(send_cq);
508d2b5d 791 while (cqe && (quota > 0)) {
18604c54
JBT		 792 ehea_inc_cq(send_cq);
793
7a291083
JBT		 794 cqe_counter++;
795 rmb();
796 if (cqe->status & EHEA_CQE_STAT_ERR_MASK) {
ea96ceac
TK		 797 ehea_error("Bad send completion status=0x%04X",
798 cqe->status);
799
7a291083
JBT		 800 if (netif_msg_tx_err(pr->port))
801 ehea_dump(cqe, sizeof(*cqe), "Send CQE");
ea96ceac
TK		 802
803 if (cqe->status & EHEA_CQE_STAT_RESET_MASK) {
804 ehea_error("Resetting port");
805 ehea_schedule_port_reset(pr->port);
806 break;
807 }
7a291083
JBT		 808 }
809
810 if (netif_msg_tx_done(pr->port))
811 ehea_dump(cqe, sizeof(*cqe), "CQE");
812
813 if (likely(EHEA_BMASK_GET(EHEA_WR_ID_TYPE, cqe->wr_id)
acbddb59
JBT		 814 == EHEA_SWQE2_TYPE)) {
815
816 index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, cqe->wr_id);
817 skb = pr->sq_skba.arr[index];
818 dev_kfree_skb(skb);
819 pr->sq_skba.arr[index] = NULL;
820 }
7a291083
JBT		 821
822 swqe_av += EHEA_BMASK_GET(EHEA_WR_ID_REFILL, cqe->wr_id);
823 quota--;
18604c54
JBT		 824
825 cqe = ehea_poll_cq(send_cq);
ee289b64 826 }
7a291083
JBT		 827
828 ehea_update_feca(send_cq, cqe_counter);
829 atomic_add(swqe_av, &pr->swqe_avail);
830
831 spin_lock_irqsave(&pr->netif_queue, flags);
18604c54 832
7a291083
JBT		 833 if (pr->queue_stopped && (atomic_read(&pr->swqe_avail)
834 >= pr->swqe_refill_th)) {
835 netif_wake_queue(pr->port->netdev);
836 pr->queue_stopped = 0;
837 }
838 spin_unlock_irqrestore(&pr->netif_queue, flags);
839
18604c54 840 return cqe;
7a291083
JBT		 841}
842
18604c54 843#define EHEA_NAPI_POLL_NUM_BEFORE_IRQ 16
bea3348e 844#define EHEA_POLL_MAX_CQES 65535
18604c54 845
bea3348e 846static int ehea_poll(struct napi_struct *napi, int budget)
7a291083 847{
508d2b5d
DM		 848 struct ehea_port_res *pr = container_of(napi, struct ehea_port_res,
849 napi);
bea3348e 850 struct net_device *dev = pr->port->netdev;
18604c54
JBT		 851 struct ehea_cqe *cqe;
852 struct ehea_cqe *cqe_skb = NULL;
853 int force_irq, wqe_index;
bea3348e 854 int rx = 0;
18604c54
JBT		 855
856 force_irq = (pr->poll_counter > EHEA_NAPI_POLL_NUM_BEFORE_IRQ);
bea3348e
SH		 857 cqe_skb = ehea_proc_cqes(pr, EHEA_POLL_MAX_CQES);
858
859 if (!force_irq)
860 rx += ehea_proc_rwqes(dev, pr, budget - rx);
18604c54 861
bea3348e 862 while ((rx != budget) || force_irq) {
18604c54 863 pr->poll_counter = 0;
bea3348e 864 force_irq = 0;
288379f0 865 napi_complete(napi);
18604c54
JBT		 866 ehea_reset_cq_ep(pr->recv_cq);
867 ehea_reset_cq_ep(pr->send_cq);
868 ehea_reset_cq_n1(pr->recv_cq);
869 ehea_reset_cq_n1(pr->send_cq);
a91fb143 870 rmb();
18604c54
JBT		 871 cqe = ehea_poll_rq1(pr->qp, &wqe_index);
872 cqe_skb = ehea_poll_cq(pr->send_cq);
873
e542aa6b 874 if (!cqe && !cqe_skb)
bea3348e 875 return rx;
18604c54 876
288379f0 877 if (!napi_reschedule(napi))
bea3348e 878 return rx;
18604c54 879
bea3348e
SH		 880 cqe_skb = ehea_proc_cqes(pr, EHEA_POLL_MAX_CQES);
881 rx += ehea_proc_rwqes(dev, pr, budget - rx);
882 }
e542aa6b 883
bea3348e
SH		 884 pr->poll_counter++;
885 return rx;
7a291083
JBT		 886}
887
8d22c971
JBT		 888#ifdef CONFIG_NET_POLL_CONTROLLER
889static void ehea_netpoll(struct net_device *dev)
890{
891 struct ehea_port *port = netdev_priv(dev);
bea3348e 892 int i;
8d22c971 893
bea3348e 894 for (i = 0; i < port->num_def_qps; i++)
288379f0 895 napi_schedule(&port->port_res[i].napi);
8d22c971
JBT		 896}
897#endif
898
7d12e780 899static irqreturn_t ehea_recv_irq_handler(int irq, void *param)
7a291083
JBT		 900{
901 struct ehea_port_res *pr = param;
18604c54 902
288379f0 903 napi_schedule(&pr->napi);
18604c54 904
7a291083
JBT		 905 return IRQ_HANDLED;
906}
907
7d12e780 908static irqreturn_t ehea_qp_aff_irq_handler(int irq, void *param)
7a291083
JBT		 909{
910 struct ehea_port *port = param;
911 struct ehea_eqe *eqe;
d2db9eea 912 struct ehea_qp *qp;
7a291083 913 u32 qp_token;
ea96ceac
TK		 914 u64 resource_type, aer, aerr;
915 int reset_port = 0;
7a291083
JBT		 916
917 eqe = ehea_poll_eq(port->qp_eq);
bb3a6449 918
7a291083 919 while (eqe) {
7a291083 920 qp_token = EHEA_BMASK_GET(EHEA_EQE_QP_TOKEN, eqe->entry);
a1c5a893 921 ehea_error("QP aff_err: entry=0x%llx, token=0x%x",
bb3a6449 922 eqe->entry, qp_token);
d2db9eea
JBT		 923
924 qp = port->port_res[qp_token].qp;
ea96ceac
TK		 925
926 resource_type = ehea_error_data(port->adapter, qp->fw_handle,
927 &aer, &aerr);
928
929 if (resource_type == EHEA_AER_RESTYPE_QP) {
930 if ((aer & EHEA_AER_RESET_MASK) ||
931 (aerr & EHEA_AERR_RESET_MASK))
932 reset_port = 1;
933 } else
934 reset_port = 1; /* Reset in case of CQ or EQ error */
935
bb3a6449 936 eqe = ehea_poll_eq(port->qp_eq);
7a291083
JBT		 937 }
938
ea96ceac
TK		 939 if (reset_port) {
940 ehea_error("Resetting port");
941 ehea_schedule_port_reset(port);
942 }
d2db9eea 943
7a291083
JBT		 944 return IRQ_HANDLED;
945}
946
947static struct ehea_port *ehea_get_port(struct ehea_adapter *adapter,
948 int logical_port)
949{
950 int i;
951
1acf2318 952 for (i = 0; i < EHEA_MAX_PORTS; i++)
41b69c70 953 if (adapter->port[i])
d1d25aab 954 if (adapter->port[i]->logical_port_id == logical_port)
41b69c70 955 return adapter->port[i];
7a291083
JBT		 956 return NULL;
957}
958
959int ehea_sense_port_attr(struct ehea_port *port)
960{
961 int ret;
962 u64 hret;
963 struct hcp_ehea_port_cb0 *cb0;
964
508d2b5d 965 /* may be called via ehea_neq_tasklet() */
3faf2693 966 cb0 = (void *)get_zeroed_page(GFP_ATOMIC);
508d2b5d 967 if (!cb0) {
7a291083
JBT		 968 ehea_error("no mem for cb0");
969 ret = -ENOMEM;
970 goto out;
971 }
972
973 hret = ehea_h_query_ehea_port(port->adapter->handle,
974 port->logical_port_id, H_PORT_CB0,
975 EHEA_BMASK_SET(H_PORT_CB0_ALL, 0xFFFF),
976 cb0);
977 if (hret != H_SUCCESS) {
978 ret = -EIO;
979 goto out_free;
980 }
981
982 /* MAC address */
983 port->mac_addr = cb0->port_mac_addr << 16;
984
508d2b5d 985 if (!is_valid_ether_addr((u8 *)&port->mac_addr)) {
7a291083
JBT		 986 ret = -EADDRNOTAVAIL;
987 goto out_free;
988 }
989
990 /* Port speed */
991 switch (cb0->port_speed) {
992 case H_SPEED_10M_H:
993 port->port_speed = EHEA_SPEED_10M;
994 port->full_duplex = 0;
995 break;
996 case H_SPEED_10M_F:
997 port->port_speed = EHEA_SPEED_10M;
998 port->full_duplex = 1;
999 break;
1000 case H_SPEED_100M_H:
1001 port->port_speed = EHEA_SPEED_100M;
1002 port->full_duplex = 0;
1003 break;
1004 case H_SPEED_100M_F:
1005 port->port_speed = EHEA_SPEED_100M;
1006 port->full_duplex = 1;
1007 break;
1008 case H_SPEED_1G_F:
1009 port->port_speed = EHEA_SPEED_1G;
1010 port->full_duplex = 1;
1011 break;
1012 case H_SPEED_10G_F:
1013 port->port_speed = EHEA_SPEED_10G;
1014 port->full_duplex = 1;
1015 break;
1016 default:
1017 port->port_speed = 0;
1018 port->full_duplex = 0;
1019 break;
1020 }
1021
e919b593 1022 port->autoneg = 1;
18604c54 1023 port->num_mcs = cb0->num_default_qps;
e919b593 1024
7a291083 1025 /* Number of default QPs */
18604c54
JBT		 1026 if (use_mcs)
1027 port->num_def_qps = cb0->num_default_qps;
1028 else
1029 port->num_def_qps = 1;
7a291083
JBT		 1030
1031 if (!port->num_def_qps) {
1032 ret = -EINVAL;
1033 goto out_free;
1034 }
1035
18604c54
JBT		 1036 port->num_tx_qps = num_tx_qps;
1037
1038 if (port->num_def_qps >= port->num_tx_qps)
7a291083
JBT		 1039 port->num_add_tx_qps = 0;
1040 else
18604c54 1041 port->num_add_tx_qps = port->num_tx_qps - port->num_def_qps;
7a291083
JBT		 1042
1043 ret = 0;
1044out_free:
1045 if (ret || netif_msg_probe(port))
1046 ehea_dump(cb0, sizeof(*cb0), "ehea_sense_port_attr");
3faf2693 1047 free_page((unsigned long)cb0);
7a291083
JBT		 1048out:
1049 return ret;
1050}
1051
1052int ehea_set_portspeed(struct ehea_port *port, u32 port_speed)
1053{
1054 struct hcp_ehea_port_cb4 *cb4;
1055 u64 hret;
1056 int ret = 0;
1057
3faf2693 1058 cb4 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083
JBT		 1059 if (!cb4) {
1060 ehea_error("no mem for cb4");
1061 ret = -ENOMEM;
1062 goto out;
1063 }
1064
1065 cb4->port_speed = port_speed;
1066
1067 netif_carrier_off(port->netdev);
1068
1069 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1070 port->logical_port_id,
1071 H_PORT_CB4, H_PORT_CB4_SPEED, cb4);
1072 if (hret == H_SUCCESS) {
1073 port->autoneg = port_speed == EHEA_SPEED_AUTONEG ? 1 : 0;
1074
1075 hret = ehea_h_query_ehea_port(port->adapter->handle,
1076 port->logical_port_id,
1077 H_PORT_CB4, H_PORT_CB4_SPEED,
1078 cb4);
1079 if (hret == H_SUCCESS) {
1080 switch (cb4->port_speed) {
1081 case H_SPEED_10M_H:
1082 port->port_speed = EHEA_SPEED_10M;
1083 port->full_duplex = 0;
1084 break;
1085 case H_SPEED_10M_F:
1086 port->port_speed = EHEA_SPEED_10M;
1087 port->full_duplex = 1;
1088 break;
1089 case H_SPEED_100M_H:
1090 port->port_speed = EHEA_SPEED_100M;
1091 port->full_duplex = 0;
1092 break;
1093 case H_SPEED_100M_F:
1094 port->port_speed = EHEA_SPEED_100M;
1095 port->full_duplex = 1;
1096 break;
1097 case H_SPEED_1G_F:
1098 port->port_speed = EHEA_SPEED_1G;
1099 port->full_duplex = 1;
1100 break;
1101 case H_SPEED_10G_F:
1102 port->port_speed = EHEA_SPEED_10G;
1103 port->full_duplex = 1;
1104 break;
1105 default:
1106 port->port_speed = 0;
1107 port->full_duplex = 0;
1108 break;
1109 }
1110 } else {
1111 ehea_error("Failed sensing port speed");
1112 ret = -EIO;
1113 }
1114 } else {
1115 if (hret == H_AUTHORITY) {
7674a588 1116 ehea_info("Hypervisor denied setting port speed");
7a291083
JBT		 1117 ret = -EPERM;
1118 } else {
1119 ret = -EIO;
1120 ehea_error("Failed setting port speed");
1121 }
1122 }
8759cf76
JBT		 1123 if (!prop_carrier_state || (port->phy_link == EHEA_PHY_LINK_UP))
1124 netif_carrier_on(port->netdev);
1125
3faf2693 1126 free_page((unsigned long)cb4);
7a291083
JBT		 1127out:
1128 return ret;
1129}
1130
1131static void ehea_parse_eqe(struct ehea_adapter *adapter, u64 eqe)
1132{
1133 int ret;
1134 u8 ec;
1135 u8 portnum;
1136 struct ehea_port *port;
1137
1138 ec = EHEA_BMASK_GET(NEQE_EVENT_CODE, eqe);
1139 portnum = EHEA_BMASK_GET(NEQE_PORTNUM, eqe);
1140 port = ehea_get_port(adapter, portnum);
1141
1142 switch (ec) {
1143 case EHEA_EC_PORTSTATE_CHG: /* port state change */
1144
1145 if (!port) {
1146 ehea_error("unknown portnum %x", portnum);
1147 break;
1148 }
1149
1150 if (EHEA_BMASK_GET(NEQE_PORT_UP, eqe)) {
1151 if (!netif_carrier_ok(port->netdev)) {
1e1675cc 1152 ret = ehea_sense_port_attr(port);
7a291083
JBT		 1153 if (ret) {
1154 ehea_error("failed resensing port "
1155 "attributes");
1156 break;
1157 }
1158
1159 if (netif_msg_link(port))
1160 ehea_info("%s: Logical port up: %dMbps "
1161 "%s Duplex",
1162 port->netdev->name,
1163 port->port_speed,
1164 port->full_duplex ==
1165 1 ? "Full" : "Half");
1166
1167 netif_carrier_on(port->netdev);
1168 netif_wake_queue(port->netdev);
1169 }
1170 } else
1171 if (netif_carrier_ok(port->netdev)) {
1172 if (netif_msg_link(port))
1173 ehea_info("%s: Logical port down",
1174 port->netdev->name);
1175 netif_carrier_off(port->netdev);
1176 netif_stop_queue(port->netdev);
1177 }
1178
1179 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PORT_UP, eqe)) {
8759cf76 1180 port->phy_link = EHEA_PHY_LINK_UP;
7a291083
JBT		 1181 if (netif_msg_link(port))
1182 ehea_info("%s: Physical port up",
1183 port->netdev->name);
8759cf76
JBT		 1184 if (prop_carrier_state)
1185 netif_carrier_on(port->netdev);
7a291083 1186 } else {
8759cf76 1187 port->phy_link = EHEA_PHY_LINK_DOWN;
7a291083
JBT		 1188 if (netif_msg_link(port))
1189 ehea_info("%s: Physical port down",
1190 port->netdev->name);
8759cf76
JBT		 1191 if (prop_carrier_state)
1192 netif_carrier_off(port->netdev);
7a291083
JBT		 1193 }
1194
1195 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PRIMARY, eqe))
1196 ehea_info("External switch port is primary port");
1197 else
1198 ehea_info("External switch port is backup port");
1199
1200 break;
1201 case EHEA_EC_ADAPTER_MALFUNC:
1202 ehea_error("Adapter malfunction");
1203 break;
1204 case EHEA_EC_PORT_MALFUNC:
1205 ehea_info("Port malfunction: Device: %s", port->netdev->name);
1206 netif_carrier_off(port->netdev);
1207 netif_stop_queue(port->netdev);
1208 break;
1209 default:
a1c5a893 1210 ehea_error("unknown event code %x, eqe=0x%llX", ec, eqe);
7a291083
JBT		 1211 break;
1212 }
1213}
1214
1215static void ehea_neq_tasklet(unsigned long data)
1216{
508d2b5d 1217 struct ehea_adapter *adapter = (struct ehea_adapter *)data;
7a291083
JBT		 1218 struct ehea_eqe *eqe;
1219 u64 event_mask;
1220
1221 eqe = ehea_poll_eq(adapter->neq);
1222 ehea_debug("eqe=%p", eqe);
1223
1224 while (eqe) {
1225 ehea_debug("*eqe=%lx", eqe->entry);
1226 ehea_parse_eqe(adapter, eqe->entry);
1227 eqe = ehea_poll_eq(adapter->neq);
1228 ehea_debug("next eqe=%p", eqe);
1229 }
1230
1231 event_mask = EHEA_BMASK_SET(NELR_PORTSTATE_CHG, 1)
1232 | EHEA_BMASK_SET(NELR_ADAPTER_MALFUNC, 1)
1233 | EHEA_BMASK_SET(NELR_PORT_MALFUNC, 1);
1234
1235 ehea_h_reset_events(adapter->handle,
1236 adapter->neq->fw_handle, event_mask);
1237}
1238
7d12e780 1239static irqreturn_t ehea_interrupt_neq(int irq, void *param)
7a291083
JBT		 1240{
1241 struct ehea_adapter *adapter = param;
1242 tasklet_hi_schedule(&adapter->neq_tasklet);
1243 return IRQ_HANDLED;
1244}
1245
1246
1247static int ehea_fill_port_res(struct ehea_port_res *pr)
1248{
1249 int ret;
1250 struct ehea_qp_init_attr *init_attr = &pr->qp->init_attr;
1251
e2878806
TK		 1252 ehea_init_fill_rq1(pr, init_attr->act_nr_rwqes_rq1
1253 - init_attr->act_nr_rwqes_rq2
1254 - init_attr->act_nr_rwqes_rq3 - 1);
7a291083 1255
e2878806 1256 ret = ehea_refill_rq2(pr, init_attr->act_nr_rwqes_rq2 - 1);
7a291083
JBT		 1257
1258 ret |= ehea_refill_rq3(pr, init_attr->act_nr_rwqes_rq3 - 1);
1259
1260 return ret;
1261}
1262
1263static int ehea_reg_interrupts(struct net_device *dev)
1264{
1265 struct ehea_port *port = netdev_priv(dev);
1266 struct ehea_port_res *pr;
1267 int i, ret;
1268
7a291083
JBT		 1269
1270 snprintf(port->int_aff_name, EHEA_IRQ_NAME_SIZE - 1, "%s-aff",
1271 dev->name);
1272
6b08f3ae 1273 ret = ibmebus_request_irq(port->qp_eq->attr.ist1,
7a291083 1274 ehea_qp_aff_irq_handler,
38515e90 1275 IRQF_DISABLED, port->int_aff_name, port);
7a291083
JBT		 1276 if (ret) {
1277 ehea_error("failed registering irq for qp_aff_irq_handler:"
1278 "ist=%X", port->qp_eq->attr.ist1);
1279 goto out_free_qpeq;
1280 }
1281
1282 if (netif_msg_ifup(port))
1283 ehea_info("irq_handle 0x%X for function qp_aff_irq_handler "
1284 "registered", port->qp_eq->attr.ist1);
1285
18604c54 1286
7a291083
JBT		 1287 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
1288 pr = &port->port_res[i];
1289 snprintf(pr->int_send_name, EHEA_IRQ_NAME_SIZE - 1,
18604c54 1290 "%s-queue%d", dev->name, i);
6b08f3ae 1291 ret = ibmebus_request_irq(pr->eq->attr.ist1,
18604c54 1292 ehea_recv_irq_handler,
38515e90 1293 IRQF_DISABLED, pr->int_send_name,
7a291083
JBT		 1294 pr);
1295 if (ret) {
18604c54 1296 ehea_error("failed registering irq for ehea_queue "
7a291083 1297 "port_res_nr:%d, ist=%X", i,
18604c54 1298 pr->eq->attr.ist1);
7a291083
JBT		 1299 goto out_free_req;
1300 }
1301 if (netif_msg_ifup(port))
18604c54
JBT		 1302 ehea_info("irq_handle 0x%X for function ehea_queue_int "
1303 "%d registered", pr->eq->attr.ist1, i);
7a291083
JBT		 1304 }
1305out:
1306 return ret;
1307
18604c54 1308
7a291083
JBT		 1309out_free_req:
1310 while (--i >= 0) {
18604c54 1311 u32 ist = port->port_res[i].eq->attr.ist1;
6b08f3ae 1312 ibmebus_free_irq(ist, &port->port_res[i]);
7a291083 1313 }
18604c54 1314
7a291083 1315out_free_qpeq:
6b08f3ae 1316 ibmebus_free_irq(port->qp_eq->attr.ist1, port);
7a291083 1317 i = port->num_def_qps;
18604c54 1318
7a291083 1319 goto out;
18604c54 1320
7a291083
JBT		 1321}
1322
1323static void ehea_free_interrupts(struct net_device *dev)
1324{
1325 struct ehea_port *port = netdev_priv(dev);
1326 struct ehea_port_res *pr;
1327 int i;
1328
1329 /* send */
18604c54 1330
7a291083
JBT		 1331 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
1332 pr = &port->port_res[i];
6b08f3ae 1333 ibmebus_free_irq(pr->eq->attr.ist1, pr);
7a291083
JBT		 1334 if (netif_msg_intr(port))
1335 ehea_info("free send irq for res %d with handle 0x%X",
18604c54 1336 i, pr->eq->attr.ist1);
7a291083
JBT		 1337 }
1338
1339 /* associated events */
6b08f3ae 1340 ibmebus_free_irq(port->qp_eq->attr.ist1, port);
7a291083
JBT		 1341 if (netif_msg_intr(port))
1342 ehea_info("associated event interrupt for handle 0x%X freed",
1343 port->qp_eq->attr.ist1);
1344}
1345
1346static int ehea_configure_port(struct ehea_port *port)
1347{
1348 int ret, i;
1349 u64 hret, mask;
1350 struct hcp_ehea_port_cb0 *cb0;
1351
1352 ret = -ENOMEM;
3faf2693 1353 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083
JBT		 1354 if (!cb0)
1355 goto out;
1356
1357 cb0->port_rc = EHEA_BMASK_SET(PXLY_RC_VALID, 1)
1358 | EHEA_BMASK_SET(PXLY_RC_IP_CHKSUM, 1)
1359 | EHEA_BMASK_SET(PXLY_RC_TCP_UDP_CHKSUM, 1)
1360 | EHEA_BMASK_SET(PXLY_RC_VLAN_XTRACT, 1)
1361 | EHEA_BMASK_SET(PXLY_RC_VLAN_TAG_FILTER,
1362 PXLY_RC_VLAN_FILTER)
1363 | EHEA_BMASK_SET(PXLY_RC_JUMBO_FRAME, 1);
1364
18604c54
JBT		 1365 for (i = 0; i < port->num_mcs; i++)
1366 if (use_mcs)
1367 cb0->default_qpn_arr[i] =
1368 port->port_res[i].qp->init_attr.qp_nr;
1369 else
1370 cb0->default_qpn_arr[i] =
1371 port->port_res[0].qp->init_attr.qp_nr;
e542aa6b 1372
7a291083
JBT		 1373 if (netif_msg_ifup(port))
1374 ehea_dump(cb0, sizeof(*cb0), "ehea_configure_port");
1375
1376 mask = EHEA_BMASK_SET(H_PORT_CB0_PRC, 1)
1377 | EHEA_BMASK_SET(H_PORT_CB0_DEFQPNARRAY, 1);
1378
1379 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1380 port->logical_port_id,
1381 H_PORT_CB0, mask, cb0);
1382 ret = -EIO;
1383 if (hret != H_SUCCESS)
1384 goto out_free;
1385
1386 ret = 0;
1387
1388out_free:
3faf2693 1389 free_page((unsigned long)cb0);
7a291083
JBT		 1390out:
1391 return ret;
1392}
1393
e542aa6b 1394int ehea_gen_smrs(struct ehea_port_res *pr)
7a291083 1395{
e542aa6b 1396 int ret;
7a291083
JBT		 1397 struct ehea_adapter *adapter = pr->port->adapter;
1398
e542aa6b
JBT		 1399 ret = ehea_gen_smr(adapter, &adapter->mr, &pr->send_mr);
1400 if (ret)
7a291083
JBT		 1401 goto out;
1402
e542aa6b
JBT		 1403 ret = ehea_gen_smr(adapter, &adapter->mr, &pr->recv_mr);
1404 if (ret)
1405 goto out_free;
7a291083
JBT		 1406
1407 return 0;
1408
e542aa6b
JBT		 1409out_free:
1410 ehea_rem_mr(&pr->send_mr);
7a291083 1411out:
e542aa6b 1412 ehea_error("Generating SMRS failed\n");
7a291083
JBT		 1413 return -EIO;
1414}
1415
e542aa6b 1416int ehea_rem_smrs(struct ehea_port_res *pr)
7a291083 1417{
8e95a202
JP		 1418 if ((ehea_rem_mr(&pr->send_mr)) ||
1419 (ehea_rem_mr(&pr->recv_mr)))
e542aa6b
JBT		 1420 return -EIO;
1421 else
1422 return 0;
7a291083
JBT		 1423}
1424
1425static int ehea_init_q_skba(struct ehea_q_skb_arr *q_skba, int max_q_entries)
1426{
508d2b5d 1427 int arr_size = sizeof(void *) * max_q_entries;
7a291083
JBT		 1428
1429 q_skba->arr = vmalloc(arr_size);
1430 if (!q_skba->arr)
1431 return -ENOMEM;
1432
1433 memset(q_skba->arr, 0, arr_size);
1434
1435 q_skba->len = max_q_entries;
1436 q_skba->index = 0;
1437 q_skba->os_skbs = 0;
1438
1439 return 0;
1440}
1441
1442static int ehea_init_port_res(struct ehea_port *port, struct ehea_port_res *pr,
1443 struct port_res_cfg *pr_cfg, int queue_token)
1444{
1445 struct ehea_adapter *adapter = port->adapter;
1446 enum ehea_eq_type eq_type = EHEA_EQ;
1447 struct ehea_qp_init_attr *init_attr = NULL;
1448 int ret = -EIO;
1449
1450 memset(pr, 0, sizeof(struct ehea_port_res));
1451
1452 pr->port = port;
7a291083
JBT		 1453 spin_lock_init(&pr->xmit_lock);
1454 spin_lock_init(&pr->netif_queue);
1455
18604c54
JBT		 1456 pr->eq = ehea_create_eq(adapter, eq_type, EHEA_MAX_ENTRIES_EQ, 0);
1457 if (!pr->eq) {
1458 ehea_error("create_eq failed (eq)");
7a291083
JBT		 1459 goto out_free;
1460 }
1461
1462 pr->recv_cq = ehea_create_cq(adapter, pr_cfg->max_entries_rcq,
18604c54 1463 pr->eq->fw_handle,
7a291083
JBT		 1464 port->logical_port_id);
1465 if (!pr->recv_cq) {
1466 ehea_error("create_cq failed (cq_recv)");
1467 goto out_free;
1468 }
1469
1470 pr->send_cq = ehea_create_cq(adapter, pr_cfg->max_entries_scq,
18604c54 1471 pr->eq->fw_handle,
7a291083
JBT		 1472 port->logical_port_id);
1473 if (!pr->send_cq) {
1474 ehea_error("create_cq failed (cq_send)");
1475 goto out_free;
1476 }
1477
1478 if (netif_msg_ifup(port))
1479 ehea_info("Send CQ: act_nr_cqes=%d, Recv CQ: act_nr_cqes=%d",
1480 pr->send_cq->attr.act_nr_of_cqes,
1481 pr->recv_cq->attr.act_nr_of_cqes);
1482
1483 init_attr = kzalloc(sizeof(*init_attr), GFP_KERNEL);
1484 if (!init_attr) {
1485 ret = -ENOMEM;
1486 ehea_error("no mem for ehea_qp_init_attr");
1487 goto out_free;
1488 }
1489
1490 init_attr->low_lat_rq1 = 1;
1491 init_attr->signalingtype = 1; /* generate CQE if specified in WQE */
1492 init_attr->rq_count = 3;
1493 init_attr->qp_token = queue_token;
1494 init_attr->max_nr_send_wqes = pr_cfg->max_entries_sq;
1495 init_attr->max_nr_rwqes_rq1 = pr_cfg->max_entries_rq1;
1496 init_attr->max_nr_rwqes_rq2 = pr_cfg->max_entries_rq2;
1497 init_attr->max_nr_rwqes_rq3 = pr_cfg->max_entries_rq3;
1498 init_attr->wqe_size_enc_sq = EHEA_SG_SQ;
1499 init_attr->wqe_size_enc_rq1 = EHEA_SG_RQ1;
1500 init_attr->wqe_size_enc_rq2 = EHEA_SG_RQ2;
1501 init_attr->wqe_size_enc_rq3 = EHEA_SG_RQ3;
1502 init_attr->rq2_threshold = EHEA_RQ2_THRESHOLD;
1503 init_attr->rq3_threshold = EHEA_RQ3_THRESHOLD;
1504 init_attr->port_nr = port->logical_port_id;
1505 init_attr->send_cq_handle = pr->send_cq->fw_handle;
1506 init_attr->recv_cq_handle = pr->recv_cq->fw_handle;
1507 init_attr->aff_eq_handle = port->qp_eq->fw_handle;
1508
1509 pr->qp = ehea_create_qp(adapter, adapter->pd, init_attr);
1510 if (!pr->qp) {
1511 ehea_error("create_qp failed");
1512 ret = -EIO;
1513 goto out_free;
1514 }
1515
1516 if (netif_msg_ifup(port))
1517 ehea_info("QP: qp_nr=%d\n act_nr_snd_wqe=%d\n nr_rwqe_rq1=%d\n "
1518 "nr_rwqe_rq2=%d\n nr_rwqe_rq3=%d", init_attr->qp_nr,
1519 init_attr->act_nr_send_wqes,
1520 init_attr->act_nr_rwqes_rq1,
1521 init_attr->act_nr_rwqes_rq2,
1522 init_attr->act_nr_rwqes_rq3);
1523
44fb3126
TK		 1524 pr->sq_skba_size = init_attr->act_nr_send_wqes + 1;
1525
1526 ret = ehea_init_q_skba(&pr->sq_skba, pr->sq_skba_size);
7a291083
JBT		 1527 ret |= ehea_init_q_skba(&pr->rq1_skba, init_attr->act_nr_rwqes_rq1 + 1);
1528 ret |= ehea_init_q_skba(&pr->rq2_skba, init_attr->act_nr_rwqes_rq2 + 1);
1529 ret |= ehea_init_q_skba(&pr->rq3_skba, init_attr->act_nr_rwqes_rq3 + 1);
1530 if (ret)
1531 goto out_free;
1532
1533 pr->swqe_refill_th = init_attr->act_nr_send_wqes / 10;
1534 if (ehea_gen_smrs(pr) != 0) {
1535 ret = -EIO;
1536 goto out_free;
1537 }
18604c54 1538
7a291083
JBT		 1539 atomic_set(&pr->swqe_avail, init_attr->act_nr_send_wqes - 1);
1540
1541 kfree(init_attr);
18604c54 1542
bea3348e 1543 netif_napi_add(pr->port->netdev, &pr->napi, ehea_poll, 64);
18604c54 1544
d4dc4ec9
JBT		 1545 pr->lro_mgr.max_aggr = pr->port->lro_max_aggr;
1546 pr->lro_mgr.max_desc = MAX_LRO_DESCRIPTORS;
1547 pr->lro_mgr.lro_arr = pr->lro_desc;
1548 pr->lro_mgr.get_skb_header = get_skb_hdr;
1549 pr->lro_mgr.features = LRO_F_NAPI | LRO_F_EXTRACT_VLAN_ID;
1550 pr->lro_mgr.dev = port->netdev;
1551 pr->lro_mgr.ip_summed = CHECKSUM_UNNECESSARY;
1552 pr->lro_mgr.ip_summed_aggr = CHECKSUM_UNNECESSARY;
1553
7a291083
JBT		 1554 ret = 0;
1555 goto out;
1556
1557out_free:
1558 kfree(init_attr);
1559 vfree(pr->sq_skba.arr);
1560 vfree(pr->rq1_skba.arr);
1561 vfree(pr->rq2_skba.arr);
1562 vfree(pr->rq3_skba.arr);
1563 ehea_destroy_qp(pr->qp);
1564 ehea_destroy_cq(pr->send_cq);
1565 ehea_destroy_cq(pr->recv_cq);
18604c54 1566 ehea_destroy_eq(pr->eq);
7a291083
JBT		 1567out:
1568 return ret;
1569}
1570
1571static int ehea_clean_portres(struct ehea_port *port, struct ehea_port_res *pr)
1572{
1573 int ret, i;
1574
357eb46d
HH		 1575 if (pr->qp)
1576 netif_napi_del(&pr->napi);
1577
7a291083
JBT		 1578 ret = ehea_destroy_qp(pr->qp);
1579
1580 if (!ret) {
1581 ehea_destroy_cq(pr->send_cq);
1582 ehea_destroy_cq(pr->recv_cq);
18604c54 1583 ehea_destroy_eq(pr->eq);
7a291083
JBT		 1584
1585 for (i = 0; i < pr->rq1_skba.len; i++)
1586 if (pr->rq1_skba.arr[i])
1587 dev_kfree_skb(pr->rq1_skba.arr[i]);
1588
1589 for (i = 0; i < pr->rq2_skba.len; i++)
1590 if (pr->rq2_skba.arr[i])
1591 dev_kfree_skb(pr->rq2_skba.arr[i]);
1592
1593 for (i = 0; i < pr->rq3_skba.len; i++)
1594 if (pr->rq3_skba.arr[i])
1595 dev_kfree_skb(pr->rq3_skba.arr[i]);
1596
1597 for (i = 0; i < pr->sq_skba.len; i++)
1598 if (pr->sq_skba.arr[i])
1599 dev_kfree_skb(pr->sq_skba.arr[i]);
1600
1601 vfree(pr->rq1_skba.arr);
1602 vfree(pr->rq2_skba.arr);
1603 vfree(pr->rq3_skba.arr);
1604 vfree(pr->sq_skba.arr);
1605 ret = ehea_rem_smrs(pr);
1606 }
1607 return ret;
1608}
1609
1610/*
1611 * The write_* functions store information in swqe which is used by
1612 * the hardware to calculate the ip/tcp/udp checksum
1613 */
1614
1615static inline void write_ip_start_end(struct ehea_swqe *swqe,
1616 const struct sk_buff *skb)
1617{
eddc9ec5 1618 swqe->ip_start = skb_network_offset(skb);
c9bdd4b5 1619 swqe->ip_end = (u8)(swqe->ip_start + ip_hdrlen(skb) - 1);
7a291083
JBT		 1620}
1621
1622static inline void write_tcp_offset_end(struct ehea_swqe *swqe,
1623 const struct sk_buff *skb)
1624{
1625 swqe->tcp_offset =
1626 (u8)(swqe->ip_end + 1 + offsetof(struct tcphdr, check));
1627
1628 swqe->tcp_end = (u16)skb->len - 1;
1629}
1630
1631static inline void write_udp_offset_end(struct ehea_swqe *swqe,
1632 const struct sk_buff *skb)
1633{
1634 swqe->tcp_offset =
1635 (u8)(swqe->ip_end + 1 + offsetof(struct udphdr, check));
1636
1637 swqe->tcp_end = (u16)skb->len - 1;
1638}
1639
1640
1641static void write_swqe2_TSO(struct sk_buff *skb,
1642 struct ehea_swqe *swqe, u32 lkey)
1643{
1644 struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry;
1645 u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0];
e743d313 1646 int skb_data_size = skb_headlen(skb);
7a291083 1647 int headersize;
7a291083
JBT		 1648
1649 /* Packet is TCP with TSO enabled */
1650 swqe->tx_control |= EHEA_SWQE_TSO;
1651 swqe->mss = skb_shinfo(skb)->gso_size;
1652 /* copy only eth/ip/tcp headers to immediate data and
1653 * the rest of skb->data to sg1entry
1654 */
ab6a5bb6 1655 headersize = ETH_HLEN + ip_hdrlen(skb) + tcp_hdrlen(skb);
7a291083 1656
e743d313 1657 skb_data_size = skb_headlen(skb);
7a291083
JBT		 1658
1659 if (skb_data_size >= headersize) {
1660 /* copy immediate data */
d626f62b 1661 skb_copy_from_linear_data(skb, imm_data, headersize);
7a291083
JBT		 1662 swqe->immediate_data_length = headersize;
1663
1664 if (skb_data_size > headersize) {
1665 /* set sg1entry data */
1666 sg1entry->l_key = lkey;
1667 sg1entry->len = skb_data_size - headersize;
44a5b3d5
TK		 1668 sg1entry->vaddr =
1669 ehea_map_vaddr(skb->data + headersize);
7a291083
JBT		 1670 swqe->descriptors++;
1671 }
1672 } else
1673 ehea_error("cannot handle fragmented headers");
1674}
1675
1676static void write_swqe2_nonTSO(struct sk_buff *skb,
1677 struct ehea_swqe *swqe, u32 lkey)
1678{
e743d313 1679 int skb_data_size = skb_headlen(skb);
7a291083
JBT		 1680 u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0];
1681 struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry;
7a291083
JBT		 1682
1683 /* Packet is any nonTSO type
1684 *
1685 * Copy as much as possible skb->data to immediate data and
1686 * the rest to sg1entry
1687 */
1688 if (skb_data_size >= SWQE2_MAX_IMM) {
1689 /* copy immediate data */
d626f62b 1690 skb_copy_from_linear_data(skb, imm_data, SWQE2_MAX_IMM);
7a291083
JBT		 1691
1692 swqe->immediate_data_length = SWQE2_MAX_IMM;
1693
1694 if (skb_data_size > SWQE2_MAX_IMM) {
1695 /* copy sg1entry data */
1696 sg1entry->l_key = lkey;
1697 sg1entry->len = skb_data_size - SWQE2_MAX_IMM;
44a5b3d5
TK		 1698 sg1entry->vaddr =
1699 ehea_map_vaddr(skb->data + SWQE2_MAX_IMM);
7a291083
JBT		 1700 swqe->descriptors++;
1701 }
1702 } else {
d626f62b 1703 skb_copy_from_linear_data(skb, imm_data, skb_data_size);
7a291083
JBT		 1704 swqe->immediate_data_length = skb_data_size;
1705 }
1706}
1707
1708static inline void write_swqe2_data(struct sk_buff *skb, struct net_device *dev,
1709 struct ehea_swqe *swqe, u32 lkey)
1710{
1711 struct ehea_vsgentry *sg_list, *sg1entry, *sgentry;
1712 skb_frag_t *frag;
1713 int nfrags, sg1entry_contains_frag_data, i;
7a291083
JBT		 1714
1715 nfrags = skb_shinfo(skb)->nr_frags;
1716 sg1entry = &swqe->u.immdata_desc.sg_entry;
508d2b5d 1717 sg_list = (struct ehea_vsgentry *)&swqe->u.immdata_desc.sg_list;
7a291083
JBT		 1718 swqe->descriptors = 0;
1719 sg1entry_contains_frag_data = 0;
1720
1721 if ((dev->features & NETIF_F_TSO) && skb_shinfo(skb)->gso_size)
1722 write_swqe2_TSO(skb, swqe, lkey);
1723 else
1724 write_swqe2_nonTSO(skb, swqe, lkey);
1725
1726 /* write descriptors */
1727 if (nfrags > 0) {
1728 if (swqe->descriptors == 0) {
1729 /* sg1entry not yet used */
1730 frag = &skb_shinfo(skb)->frags[0];
1731
1732 /* copy sg1entry data */
1733 sg1entry->l_key = lkey;
1734 sg1entry->len = frag->size;
44a5b3d5
TK		 1735 sg1entry->vaddr =
1736 ehea_map_vaddr(page_address(frag->page)
1737 + frag->page_offset);
7a291083
JBT		 1738 swqe->descriptors++;
1739 sg1entry_contains_frag_data = 1;
1740 }
1741
1742 for (i = sg1entry_contains_frag_data; i < nfrags; i++) {
1743
1744 frag = &skb_shinfo(skb)->frags[i];
1745 sgentry = &sg_list[i - sg1entry_contains_frag_data];
1746
1747 sgentry->l_key = lkey;
1748 sgentry->len = frag->size;
44a5b3d5
TK		 1749 sgentry->vaddr =
1750 ehea_map_vaddr(page_address(frag->page)
1751 + frag->page_offset);
7a291083
JBT		 1752 swqe->descriptors++;
1753 }
1754 }
1755}
1756
1757static int ehea_broadcast_reg_helper(struct ehea_port *port, u32 hcallid)
1758{
1759 int ret = 0;
1760 u64 hret;
1761 u8 reg_type;
1762
1763 /* De/Register untagged packets */
1764 reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_UNTAGGED;
1765 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1766 port->logical_port_id,
1767 reg_type, port->mac_addr, 0, hcallid);
1768 if (hret != H_SUCCESS) {
f9e29228 1769 ehea_error("%sregistering bc address failed (tagged)",
508d2b5d 1770 hcallid == H_REG_BCMC ? "" : "de");
7a291083
JBT		 1771 ret = -EIO;
1772 goto out_herr;
1773 }
1774
1775 /* De/Register VLAN packets */
1776 reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_VLANID_ALL;
1777 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1778 port->logical_port_id,
1779 reg_type, port->mac_addr, 0, hcallid);
1780 if (hret != H_SUCCESS) {
f9e29228
TK		 1781 ehea_error("%sregistering bc address failed (vlan)",
1782 hcallid == H_REG_BCMC ? "" : "de");
7a291083
JBT		 1783 ret = -EIO;
1784 }
1785out_herr:
1786 return ret;
1787}
1788
1789static int ehea_set_mac_addr(struct net_device *dev, void *sa)
1790{
1791 struct ehea_port *port = netdev_priv(dev);
1792 struct sockaddr *mac_addr = sa;
1793 struct hcp_ehea_port_cb0 *cb0;
1794 int ret;
1795 u64 hret;
1796
1797 if (!is_valid_ether_addr(mac_addr->sa_data)) {
1798 ret = -EADDRNOTAVAIL;
1799 goto out;
1800 }
1801
3faf2693 1802 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083
JBT		 1803 if (!cb0) {
1804 ehea_error("no mem for cb0");
1805 ret = -ENOMEM;
1806 goto out;
1807 }
1808
1809 memcpy(&(cb0->port_mac_addr), &(mac_addr->sa_data[0]), ETH_ALEN);
1810
1811 cb0->port_mac_addr = cb0->port_mac_addr >> 16;
1812
1813 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1814 port->logical_port_id, H_PORT_CB0,
1815 EHEA_BMASK_SET(H_PORT_CB0_MAC, 1), cb0);
1816 if (hret != H_SUCCESS) {
1817 ret = -EIO;
1818 goto out_free;
1819 }
1820
1821 memcpy(dev->dev_addr, mac_addr->sa_data, dev->addr_len);
1822
1823 /* Deregister old MAC in pHYP */
00aaea2f
JBT		 1824 if (port->state == EHEA_PORT_UP) {
1825 ret = ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
1826 if (ret)
1827 goto out_upregs;
1828 }
7a291083
JBT		 1829
1830 port->mac_addr = cb0->port_mac_addr << 16;
1831
1832 /* Register new MAC in pHYP */
00aaea2f
JBT		 1833 if (port->state == EHEA_PORT_UP) {
1834 ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
1835 if (ret)
1836 goto out_upregs;
1837 }
7a291083
JBT		 1838
1839 ret = 0;
21eee2dd
TK		 1840
1841out_upregs:
1842 ehea_update_bcmc_registrations();
7a291083 1843out_free:
3faf2693 1844 free_page((unsigned long)cb0);
7a291083
JBT		 1845out:
1846 return ret;
1847}
1848
1849static void ehea_promiscuous_error(u64 hret, int enable)
1850{
7674a588
TK		 1851 if (hret == H_AUTHORITY)
1852 ehea_info("Hypervisor denied %sabling promiscuous mode",
1853 enable == 1 ? "en" : "dis");
1854 else
1855 ehea_error("failed %sabling promiscuous mode",
1856 enable == 1 ? "en" : "dis");
7a291083
JBT		 1857}
1858
1859static void ehea_promiscuous(struct net_device *dev, int enable)
1860{
1861 struct ehea_port *port = netdev_priv(dev);
1862 struct hcp_ehea_port_cb7 *cb7;
1863 u64 hret;
1864
1865 if ((enable && port->promisc) || (!enable && !port->promisc))
1866 return;
1867
3faf2693 1868 cb7 = (void *)get_zeroed_page(GFP_ATOMIC);
7a291083
JBT		 1869 if (!cb7) {
1870 ehea_error("no mem for cb7");
1871 goto out;
1872 }
1873
1874 /* Modify Pxs_DUCQPN in CB7 */
1875 cb7->def_uc_qpn = enable == 1 ? port->port_res[0].qp->fw_handle : 0;
1876
1877 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1878 port->logical_port_id,
1879 H_PORT_CB7, H_PORT_CB7_DUCQPN, cb7);
1880 if (hret) {
1881 ehea_promiscuous_error(hret, enable);
1882 goto out;
1883 }
1884
1885 port->promisc = enable;
1886out:
3faf2693 1887 free_page((unsigned long)cb7);
7a291083
JBT		 1888}
1889
1890static u64 ehea_multicast_reg_helper(struct ehea_port *port, u64 mc_mac_addr,
1891 u32 hcallid)
1892{
1893 u64 hret;
1894 u8 reg_type;
1895
1896 reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST
1897 | EHEA_BCMC_UNTAGGED;
1898
1899 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1900 port->logical_port_id,
1901 reg_type, mc_mac_addr, 0, hcallid);
1902 if (hret)
1903 goto out;
1904
1905 reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST
1906 | EHEA_BCMC_VLANID_ALL;
1907
1908 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1909 port->logical_port_id,
1910 reg_type, mc_mac_addr, 0, hcallid);
1911out:
1912 return hret;
1913}
1914
1915static int ehea_drop_multicast_list(struct net_device *dev)
1916{
1917 struct ehea_port *port = netdev_priv(dev);
1918 struct ehea_mc_list *mc_entry = port->mc_list;
1919 struct list_head *pos;
1920 struct list_head *temp;
1921 int ret = 0;
1922 u64 hret;
1923
1924 list_for_each_safe(pos, temp, &(port->mc_list->list)) {
1925 mc_entry = list_entry(pos, struct ehea_mc_list, list);
1926
1927 hret = ehea_multicast_reg_helper(port, mc_entry->macaddr,
1928 H_DEREG_BCMC);
1929 if (hret) {
1930 ehea_error("failed deregistering mcast MAC");
1931 ret = -EIO;
1932 }
1933
1934 list_del(pos);
1935 kfree(mc_entry);
1936 }
1937 return ret;
1938}
1939
1940static void ehea_allmulti(struct net_device *dev, int enable)
1941{
1942 struct ehea_port *port = netdev_priv(dev);
1943 u64 hret;
1944
1945 if (!port->allmulti) {
1946 if (enable) {
1947 /* Enable ALLMULTI */
1948 ehea_drop_multicast_list(dev);
1949 hret = ehea_multicast_reg_helper(port, 0, H_REG_BCMC);
1950 if (!hret)
1951 port->allmulti = 1;
1952 else
1953 ehea_error("failed enabling IFF_ALLMULTI");
1954 }
1955 } else
1956 if (!enable) {
1957 /* Disable ALLMULTI */
1958 hret = ehea_multicast_reg_helper(port, 0, H_DEREG_BCMC);
1959 if (!hret)
1960 port->allmulti = 0;
1961 else
1962 ehea_error("failed disabling IFF_ALLMULTI");
1963 }
1964}
1965
508d2b5d 1966static void ehea_add_multicast_entry(struct ehea_port *port, u8 *mc_mac_addr)
7a291083
JBT		 1967{
1968 struct ehea_mc_list *ehea_mcl_entry;
1969 u64 hret;
1970
1e1675cc 1971 ehea_mcl_entry = kzalloc(sizeof(*ehea_mcl_entry), GFP_ATOMIC);
7a291083
JBT		 1972 if (!ehea_mcl_entry) {
1973 ehea_error("no mem for mcl_entry");
1974 return;
1975 }
1976
1977 INIT_LIST_HEAD(&ehea_mcl_entry->list);
1978
1979 memcpy(&ehea_mcl_entry->macaddr, mc_mac_addr, ETH_ALEN);
1980
1981 hret = ehea_multicast_reg_helper(port, ehea_mcl_entry->macaddr,
1982 H_REG_BCMC);
1983 if (!hret)
1984 list_add(&ehea_mcl_entry->list, &port->mc_list->list);
1985 else {
1986 ehea_error("failed registering mcast MAC");
1987 kfree(ehea_mcl_entry);
1988 }
1989}
1990
1991static void ehea_set_multicast_list(struct net_device *dev)
1992{
1993 struct ehea_port *port = netdev_priv(dev);
22bedad3 1994 struct netdev_hw_addr *ha;
48e2f183 1995 int ret;
7a291083
JBT		 1996
1997 if (dev->flags & IFF_PROMISC) {
1998 ehea_promiscuous(dev, 1);
1999 return;
2000 }
2001 ehea_promiscuous(dev, 0);
2002
2003 if (dev->flags & IFF_ALLMULTI) {
2004 ehea_allmulti(dev, 1);
21eee2dd 2005 goto out;
7a291083
JBT		 2006 }
2007 ehea_allmulti(dev, 0);
2008
4cd24eaf 2009 if (!netdev_mc_empty(dev)) {
7a291083
JBT		 2010 ret = ehea_drop_multicast_list(dev);
2011 if (ret) {
2012 /* Dropping the current multicast list failed.
2013 * Enabling ALL_MULTI is the best we can do.
2014 */
2015 ehea_allmulti(dev, 1);
2016 }
2017
4cd24eaf 2018 if (netdev_mc_count(dev) > port->adapter->max_mc_mac) {
a1c5a893 2019 ehea_info("Mcast registration limit reached (0x%llx). "
7a291083
JBT		 2020 "Use ALLMULTI!",
2021 port->adapter->max_mc_mac);
2022 goto out;
2023 }
2024
22bedad3
JP		 2025 netdev_for_each_mc_addr(ha, dev)
2026 ehea_add_multicast_entry(port, ha->addr);
508d2b5d 2027
7a291083
JBT		 2028 }
2029out:
21eee2dd 2030 ehea_update_bcmc_registrations();
7a291083
JBT		 2031}
2032
2033static int ehea_change_mtu(struct net_device *dev, int new_mtu)
2034{
2035 if ((new_mtu < 68) || (new_mtu > EHEA_MAX_PACKET_SIZE))
2036 return -EINVAL;
2037 dev->mtu = new_mtu;
2038 return 0;
2039}
2040
2041static void ehea_xmit2(struct sk_buff *skb, struct net_device *dev,
2042 struct ehea_swqe *swqe, u32 lkey)
2043{
2044 if (skb->protocol == htons(ETH_P_IP)) {
eddc9ec5 2045 const struct iphdr *iph = ip_hdr(skb);
d1d25aab 2046
7a291083
JBT		 2047 /* IPv4 */
2048 swqe->tx_control |= EHEA_SWQE_CRC
2049 | EHEA_SWQE_IP_CHECKSUM
2050 | EHEA_SWQE_TCP_CHECKSUM
2051 | EHEA_SWQE_IMM_DATA_PRESENT
2052 | EHEA_SWQE_DESCRIPTORS_PRESENT;
2053
2054 write_ip_start_end(swqe, skb);
2055
eddc9ec5 2056 if (iph->protocol == IPPROTO_UDP) {
8e95a202
JP		 2057 if ((iph->frag_off & IP_MF) ||
2058 (iph->frag_off & IP_OFFSET))
7a291083
JBT		 2059 /* IP fragment, so don't change cs */
2060 swqe->tx_control &= ~EHEA_SWQE_TCP_CHECKSUM;
2061 else
2062 write_udp_offset_end(swqe, skb);
eddc9ec5 2063 } else if (iph->protocol == IPPROTO_TCP) {
7a291083
JBT		 2064 write_tcp_offset_end(swqe, skb);
2065 }
2066
2067 /* icmp (big data) and ip segmentation packets (all other ip
2068 packets) do not require any special handling */
2069
2070 } else {
2071 /* Other Ethernet Protocol */
2072 swqe->tx_control |= EHEA_SWQE_CRC
2073 | EHEA_SWQE_IMM_DATA_PRESENT
2074 | EHEA_SWQE_DESCRIPTORS_PRESENT;
2075 }
2076
2077 write_swqe2_data(skb, dev, swqe, lkey);
2078}
2079
2080static void ehea_xmit3(struct sk_buff *skb, struct net_device *dev,
2081 struct ehea_swqe *swqe)
2082{
2083 int nfrags = skb_shinfo(skb)->nr_frags;
2084 u8 *imm_data = &swqe->u.immdata_nodesc.immediate_data[0];
2085 skb_frag_t *frag;
2086 int i;
2087
2088 if (skb->protocol == htons(ETH_P_IP)) {
eddc9ec5 2089 const struct iphdr *iph = ip_hdr(skb);
d1d25aab 2090
7a291083
JBT		 2091 /* IPv4 */
2092 write_ip_start_end(swqe, skb);
2093
eddc9ec5 2094 if (iph->protocol == IPPROTO_TCP) {
7a291083
JBT		 2095 swqe->tx_control |= EHEA_SWQE_CRC
2096 | EHEA_SWQE_IP_CHECKSUM
2097 | EHEA_SWQE_TCP_CHECKSUM
2098 | EHEA_SWQE_IMM_DATA_PRESENT;
2099
2100 write_tcp_offset_end(swqe, skb);
2101
eddc9ec5 2102 } else if (iph->protocol == IPPROTO_UDP) {
8e95a202
JP		 2103 if ((iph->frag_off & IP_MF) ||
2104 (iph->frag_off & IP_OFFSET))
7a291083
JBT		 2105 /* IP fragment, so don't change cs */
2106 swqe->tx_control |= EHEA_SWQE_CRC
2107 | EHEA_SWQE_IMM_DATA_PRESENT;
2108 else {
2109 swqe->tx_control |= EHEA_SWQE_CRC
2110 | EHEA_SWQE_IP_CHECKSUM
2111 | EHEA_SWQE_TCP_CHECKSUM
2112 | EHEA_SWQE_IMM_DATA_PRESENT;
2113
2114 write_udp_offset_end(swqe, skb);
2115 }
2116 } else {
2117 /* icmp (big data) and
2118 ip segmentation packets (all other ip packets) */
2119 swqe->tx_control |= EHEA_SWQE_CRC
2120 | EHEA_SWQE_IP_CHECKSUM
2121 | EHEA_SWQE_IMM_DATA_PRESENT;
2122 }
2123 } else {
2124 /* Other Ethernet Protocol */
2125 swqe->tx_control |= EHEA_SWQE_CRC | EHEA_SWQE_IMM_DATA_PRESENT;
2126 }
2127 /* copy (immediate) data */
2128 if (nfrags == 0) {
2129 /* data is in a single piece */
d626f62b 2130 skb_copy_from_linear_data(skb, imm_data, skb->len);
7a291083
JBT		 2131 } else {
2132 /* first copy data from the skb->data buffer ... */
d626f62b 2133 skb_copy_from_linear_data(skb, imm_data,
e743d313
ED		 2134 skb_headlen(skb));
2135 imm_data += skb_headlen(skb);
7a291083
JBT		 2136
2137 /* ... then copy data from the fragments */
2138 for (i = 0; i < nfrags; i++) {
2139 frag = &skb_shinfo(skb)->frags[i];
2140 memcpy(imm_data,
2141 page_address(frag->page) + frag->page_offset,
2142 frag->size);
2143 imm_data += frag->size;
2144 }
2145 }
2146 swqe->immediate_data_length = skb->len;
2147 dev_kfree_skb(skb);
2148}
2149
18604c54
JBT		 2150static inline int ehea_hash_skb(struct sk_buff *skb, int num_qps)
2151{
2152 struct tcphdr *tcp;
2153 u32 tmp;
2154
2155 if ((skb->protocol == htons(ETH_P_IP)) &&
88ca2d07 2156 (ip_hdr(skb)->protocol == IPPROTO_TCP)) {
508d2b5d
DM		 2157 tcp = (struct tcphdr *)(skb_network_header(skb) +
2158 (ip_hdr(skb)->ihl * 4));
18604c54 2159 tmp = (tcp->source + (tcp->dest << 16)) % 31;
88ca2d07 2160 tmp += ip_hdr(skb)->daddr % 31;
18604c54 2161 return tmp % num_qps;
508d2b5d 2162 } else
18604c54
JBT		 2163 return 0;
2164}
2165
7a291083
JBT		 2166static int ehea_start_xmit(struct sk_buff *skb, struct net_device *dev)
2167{
2168 struct ehea_port *port = netdev_priv(dev);
2169 struct ehea_swqe *swqe;
2170 unsigned long flags;
2171 u32 lkey;
2172 int swqe_index;
18604c54
JBT		 2173 struct ehea_port_res *pr;
2174
2175 pr = &port->port_res[ehea_hash_skb(skb, port->num_tx_qps)];
2176
18604c54
JBT		 2177 if (!spin_trylock(&pr->xmit_lock))
2178 return NETDEV_TX_BUSY;
2179
2180 if (pr->queue_stopped) {
2181 spin_unlock(&pr->xmit_lock);
2182 return NETDEV_TX_BUSY;
2183 }
7a291083
JBT		 2184
2185 swqe = ehea_get_swqe(pr->qp, &swqe_index);
2186 memset(swqe, 0, SWQE_HEADER_SIZE);
2187 atomic_dec(&pr->swqe_avail);
2188
2189 if (skb->len <= SWQE3_MAX_IMM) {
2190 u32 sig_iv = port->sig_comp_iv;
2191 u32 swqe_num = pr->swqe_id_counter;
2192 ehea_xmit3(skb, dev, swqe);
2193 swqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE3_TYPE)
2194 | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, swqe_num);
2195 if (pr->swqe_ll_count >= (sig_iv - 1)) {
2196 swqe->wr_id |= EHEA_BMASK_SET(EHEA_WR_ID_REFILL,
2197 sig_iv);
2198 swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
2199 pr->swqe_ll_count = 0;
2200 } else
2201 pr->swqe_ll_count += 1;
2202 } else {
2203 swqe->wr_id =
2204 EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE2_TYPE)
2205 | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, pr->swqe_id_counter)
acbddb59 2206 | EHEA_BMASK_SET(EHEA_WR_ID_REFILL, 1)
7a291083
JBT		 2207 | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, pr->sq_skba.index);
2208 pr->sq_skba.arr[pr->sq_skba.index] = skb;
2209
2210 pr->sq_skba.index++;
2211 pr->sq_skba.index &= (pr->sq_skba.len - 1);
2212
2213 lkey = pr->send_mr.lkey;
2214 ehea_xmit2(skb, dev, swqe, lkey);
acbddb59 2215 swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
7a291083
JBT		 2216 }
2217 pr->swqe_id_counter += 1;
2218
2219 if (port->vgrp && vlan_tx_tag_present(skb)) {
2220 swqe->tx_control |= EHEA_SWQE_VLAN_INSERT;
2221 swqe->vlan_tag = vlan_tx_tag_get(skb);
2222 }
2223
2224 if (netif_msg_tx_queued(port)) {
2225 ehea_info("post swqe on QP %d", pr->qp->init_attr.qp_nr);
bff0a55f 2226 ehea_dump(swqe, 512, "swqe");
7a291083
JBT		 2227 }
2228
2c69448b
JBT		 2229 if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) {
2230 netif_stop_queue(dev);
2231 swqe->tx_control |= EHEA_SWQE_PURGE;
2232 }
44c82152 2233
7a291083 2234 ehea_post_swqe(pr->qp, swqe);
7393b87c 2235 pr->tx_packets++;
7a291083
JBT		 2236
2237 if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) {
2238 spin_lock_irqsave(&pr->netif_queue, flags);
2239 if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) {
acbddb59 2240 pr->p_stats.queue_stopped++;
7a291083
JBT		 2241 netif_stop_queue(dev);
2242 pr->queue_stopped = 1;
2243 }
2244 spin_unlock_irqrestore(&pr->netif_queue, flags);
2245 }
1ae5dc34 2246 dev->trans_start = jiffies; /* NETIF_F_LLTX driver :( */
7a291083 2247 spin_unlock(&pr->xmit_lock);
2c69448b 2248
7a291083
JBT		 2249 return NETDEV_TX_OK;
2250}
2251
2252static void ehea_vlan_rx_register(struct net_device *dev,
2253 struct vlan_group *grp)
2254{
2255 struct ehea_port *port = netdev_priv(dev);
2256 struct ehea_adapter *adapter = port->adapter;
2257 struct hcp_ehea_port_cb1 *cb1;
2258 u64 hret;
2259
2260 port->vgrp = grp;
2261
3faf2693 2262 cb1 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083
JBT		 2263 if (!cb1) {
2264 ehea_error("no mem for cb1");
2265 goto out;
2266 }
2267
7a291083
JBT		 2268 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
2269 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2270 if (hret != H_SUCCESS)
2271 ehea_error("modify_ehea_port failed");
2272
3faf2693 2273 free_page((unsigned long)cb1);
7a291083
JBT		 2274out:
2275 return;
2276}
2277
2278static void ehea_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
2279{
2280 struct ehea_port *port = netdev_priv(dev);
2281 struct ehea_adapter *adapter = port->adapter;
2282 struct hcp_ehea_port_cb1 *cb1;
2283 int index;
2284 u64 hret;
2285
3faf2693 2286 cb1 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083
JBT		 2287 if (!cb1) {
2288 ehea_error("no mem for cb1");
2289 goto out;
2290 }
2291
2292 hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
2293 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2294 if (hret != H_SUCCESS) {
2295 ehea_error("query_ehea_port failed");
2296 goto out;
2297 }
2298
2299 index = (vid / 64);
dec590c1 2300 cb1->vlan_filter[index] |= ((u64)(0x8000000000000000 >> (vid & 0x3F)));
7a291083
JBT		 2301
2302 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
2303 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2304 if (hret != H_SUCCESS)
2305 ehea_error("modify_ehea_port failed");
2306out:
3faf2693 2307 free_page((unsigned long)cb1);
7a291083
JBT		 2308 return;
2309}
2310
2311static void ehea_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
2312{
2313 struct ehea_port *port = netdev_priv(dev);
2314 struct ehea_adapter *adapter = port->adapter;
2315 struct hcp_ehea_port_cb1 *cb1;
2316 int index;
2317 u64 hret;
2318
5c15bdec 2319 vlan_group_set_device(port->vgrp, vid, NULL);
7a291083 2320
3faf2693 2321 cb1 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083
JBT		 2322 if (!cb1) {
2323 ehea_error("no mem for cb1");
2324 goto out;
2325 }
2326
2327 hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
2328 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2329 if (hret != H_SUCCESS) {
2330 ehea_error("query_ehea_port failed");
2331 goto out;
2332 }
2333
2334 index = (vid / 64);
dec590c1 2335 cb1->vlan_filter[index] &= ~((u64)(0x8000000000000000 >> (vid & 0x3F)));
7a291083
JBT		 2336
2337 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
2338 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2339 if (hret != H_SUCCESS)
2340 ehea_error("modify_ehea_port failed");
2341out:
3faf2693 2342 free_page((unsigned long)cb1);
7a291083
JBT		 2343}
2344
2345int ehea_activate_qp(struct ehea_adapter *adapter, struct ehea_qp *qp)
2346{
2347 int ret = -EIO;
2348 u64 hret;
2349 u16 dummy16 = 0;
2350 u64 dummy64 = 0;
508d2b5d 2351 struct hcp_modify_qp_cb0 *cb0;
7a291083 2352
3faf2693 2353 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083
JBT		 2354 if (!cb0) {
2355 ret = -ENOMEM;
2356 goto out;
2357 }
2358
2359 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2360 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2361 if (hret != H_SUCCESS) {
2362 ehea_error("query_ehea_qp failed (1)");
2363 goto out;
2364 }
2365
2366 cb0->qp_ctl_reg = H_QP_CR_STATE_INITIALIZED;
2367 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2368 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2369 &dummy64, &dummy64, &dummy16, &dummy16);
2370 if (hret != H_SUCCESS) {
2371 ehea_error("modify_ehea_qp failed (1)");
2372 goto out;
2373 }
2374
2375 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2376 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2377 if (hret != H_SUCCESS) {
2378 ehea_error("query_ehea_qp failed (2)");
2379 goto out;
2380 }
2381
2382 cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_INITIALIZED;
2383 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2384 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2385 &dummy64, &dummy64, &dummy16, &dummy16);
2386 if (hret != H_SUCCESS) {
2387 ehea_error("modify_ehea_qp failed (2)");
2388 goto out;
2389 }
2390
2391 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2392 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2393 if (hret != H_SUCCESS) {
2394 ehea_error("query_ehea_qp failed (3)");
2395 goto out;
2396 }
2397
2398 cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_RDY2SND;
2399 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2400 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2401 &dummy64, &dummy64, &dummy16, &dummy16);
2402 if (hret != H_SUCCESS) {
2403 ehea_error("modify_ehea_qp failed (3)");
2404 goto out;
2405 }
2406
2407 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2408 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2409 if (hret != H_SUCCESS) {
2410 ehea_error("query_ehea_qp failed (4)");
2411 goto out;
2412 }
2413
2414 ret = 0;
2415out:
3faf2693 2416 free_page((unsigned long)cb0);
7a291083
JBT		 2417 return ret;
2418}
2419
2420static int ehea_port_res_setup(struct ehea_port *port, int def_qps,
2421 int add_tx_qps)
2422{
2423 int ret, i;
2424 struct port_res_cfg pr_cfg, pr_cfg_small_rx;
2425 enum ehea_eq_type eq_type = EHEA_EQ;
2426
2427 port->qp_eq = ehea_create_eq(port->adapter, eq_type,
2428 EHEA_MAX_ENTRIES_EQ, 1);
2429 if (!port->qp_eq) {
2430 ret = -EINVAL;
2431 ehea_error("ehea_create_eq failed (qp_eq)");
2432 goto out_kill_eq;
2433 }
2434
2435 pr_cfg.max_entries_rcq = rq1_entries + rq2_entries + rq3_entries;
18604c54 2436 pr_cfg.max_entries_scq = sq_entries * 2;
7a291083
JBT		 2437 pr_cfg.max_entries_sq = sq_entries;
2438 pr_cfg.max_entries_rq1 = rq1_entries;
2439 pr_cfg.max_entries_rq2 = rq2_entries;
2440 pr_cfg.max_entries_rq3 = rq3_entries;
2441
2442 pr_cfg_small_rx.max_entries_rcq = 1;
2443 pr_cfg_small_rx.max_entries_scq = sq_entries;
2444 pr_cfg_small_rx.max_entries_sq = sq_entries;
2445 pr_cfg_small_rx.max_entries_rq1 = 1;
2446 pr_cfg_small_rx.max_entries_rq2 = 1;
2447 pr_cfg_small_rx.max_entries_rq3 = 1;
2448
2449 for (i = 0; i < def_qps; i++) {
2450 ret = ehea_init_port_res(port, &port->port_res[i], &pr_cfg, i);
2451 if (ret)
2452 goto out_clean_pr;
2453 }
2454 for (i = def_qps; i < def_qps + add_tx_qps; i++) {
2455 ret = ehea_init_port_res(port, &port->port_res[i],
2456 &pr_cfg_small_rx, i);
2457 if (ret)
2458 goto out_clean_pr;
2459 }
2460
2461 return 0;
2462
2463out_clean_pr:
2464 while (--i >= 0)
2465 ehea_clean_portres(port, &port->port_res[i]);
2466
2467out_kill_eq:
2468 ehea_destroy_eq(port->qp_eq);
2469 return ret;
2470}
2471
2472static int ehea_clean_all_portres(struct ehea_port *port)
2473{
2474 int ret = 0;
2475 int i;
2476
508d2b5d 2477 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
7a291083
JBT		 2478 ret |= ehea_clean_portres(port, &port->port_res[i]);
2479
2480 ret |= ehea_destroy_eq(port->qp_eq);
2481
2482 return ret;
2483}
2484
35cf2e2e 2485static void ehea_remove_adapter_mr(struct ehea_adapter *adapter)
1211bb6d 2486{
35cf2e2e
TK		 2487 if (adapter->active_ports)
2488 return;
1211bb6d
TK		 2489
2490 ehea_rem_mr(&adapter->mr);
2491}
2492
35cf2e2e 2493static int ehea_add_adapter_mr(struct ehea_adapter *adapter)
1211bb6d 2494{
35cf2e2e
TK		 2495 if (adapter->active_ports)
2496 return 0;
1211bb6d
TK		 2497
2498 return ehea_reg_kernel_mr(adapter, &adapter->mr);
2499}
2500
7a291083
JBT		 2501static int ehea_up(struct net_device *dev)
2502{
2503 int ret, i;
2504 struct ehea_port *port = netdev_priv(dev);
7a291083
JBT		 2505
2506 if (port->state == EHEA_PORT_UP)
2507 return 0;
2508
2509 ret = ehea_port_res_setup(port, port->num_def_qps,
2510 port->num_add_tx_qps);
2511 if (ret) {
2512 ehea_error("port_res_failed");
2513 goto out;
2514 }
2515
2516 /* Set default QP for this port */
2517 ret = ehea_configure_port(port);
2518 if (ret) {
2519 ehea_error("ehea_configure_port failed. ret:%d", ret);
2520 goto out_clean_pr;
2521 }
2522
7a291083
JBT		 2523 ret = ehea_reg_interrupts(dev);
2524 if (ret) {
f9e29228
TK		 2525 ehea_error("reg_interrupts failed. ret:%d", ret);
2526 goto out_clean_pr;
7a291083
JBT		 2527 }
2528
508d2b5d 2529 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
7a291083
JBT		 2530 ret = ehea_activate_qp(port->adapter, port->port_res[i].qp);
2531 if (ret) {
2532 ehea_error("activate_qp failed");
2533 goto out_free_irqs;
2534 }
2535 }
2536
508d2b5d 2537 for (i = 0; i < port->num_def_qps; i++) {
7a291083
JBT		 2538 ret = ehea_fill_port_res(&port->port_res[i]);
2539 if (ret) {
2540 ehea_error("out_free_irqs");
2541 goto out_free_irqs;
2542 }
2543 }
2544
21eee2dd
TK		 2545 ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
2546 if (ret) {
2547 ret = -EIO;
2548 goto out_free_irqs;
2549 }
2550
7a291083 2551 port->state = EHEA_PORT_UP;
21eee2dd
TK		 2552
2553 ret = 0;
7a291083
JBT		 2554 goto out;
2555
2556out_free_irqs:
2557 ehea_free_interrupts(dev);
2558
7a291083
JBT		 2559out_clean_pr:
2560 ehea_clean_all_portres(port);
2561out:
44c82152
TK		 2562 if (ret)
2563 ehea_info("Failed starting %s. ret=%i", dev->name, ret);
2564
21eee2dd 2565 ehea_update_bcmc_registrations();
21eee2dd 2566 ehea_update_firmware_handles();
21eee2dd 2567
7a291083
JBT		 2568 return ret;
2569}
2570
bea3348e
SH		 2571static void port_napi_disable(struct ehea_port *port)
2572{
2573 int i;
2574
0173b793 2575 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
bea3348e
SH		 2576 napi_disable(&port->port_res[i].napi);
2577}
2578
2579static void port_napi_enable(struct ehea_port *port)
2580{
2581 int i;
2582
0173b793 2583 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
bea3348e
SH		 2584 napi_enable(&port->port_res[i].napi);
2585}
2586
7a291083
JBT		 2587static int ehea_open(struct net_device *dev)
2588{
2589 int ret;
2590 struct ehea_port *port = netdev_priv(dev);
2591
a5af6ad3 2592 mutex_lock(&port->port_lock);
7a291083
JBT		 2593
2594 if (netif_msg_ifup(port))
2595 ehea_info("enabling port %s", dev->name);
2596
2597 ret = ehea_up(dev);
bea3348e
SH		 2598 if (!ret) {
2599 port_napi_enable(port);
7a291083 2600 netif_start_queue(dev);
bea3348e 2601 }
7a291083 2602
a5af6ad3 2603 mutex_unlock(&port->port_lock);
7a291083
JBT		 2604
2605 return ret;
2606}
2607
2608static int ehea_down(struct net_device *dev)
2609{
bea3348e 2610 int ret;
7a291083
JBT		 2611 struct ehea_port *port = netdev_priv(dev);
2612
2613 if (port->state == EHEA_PORT_DOWN)
2614 return 0;
2615
2616 ehea_drop_multicast_list(dev);
21eee2dd
TK		 2617 ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
2618
7a291083
JBT		 2619 ehea_free_interrupts(dev);
2620
7a291083 2621 port->state = EHEA_PORT_DOWN;
44c82152 2622
21eee2dd 2623 ehea_update_bcmc_registrations();
21eee2dd 2624
44c82152
TK		 2625 ret = ehea_clean_all_portres(port);
2626 if (ret)
2627 ehea_info("Failed freeing resources for %s. ret=%i",
2628 dev->name, ret);
2629
21eee2dd 2630 ehea_update_firmware_handles();
21eee2dd 2631
7a291083
JBT		 2632 return ret;
2633}
2634
2635static int ehea_stop(struct net_device *dev)
2636{
2637 int ret;
2638 struct ehea_port *port = netdev_priv(dev);
2639
2640 if (netif_msg_ifdown(port))
2641 ehea_info("disabling port %s", dev->name);
2642
2f69ae01 2643 set_bit(__EHEA_DISABLE_PORT_RESET, &port->flags);
4bb073c0 2644 cancel_work_sync(&port->reset_task);
a5af6ad3 2645 mutex_lock(&port->port_lock);
7a291083 2646 netif_stop_queue(dev);
0173b793 2647 port_napi_disable(port);
7a291083 2648 ret = ehea_down(dev);
a5af6ad3 2649 mutex_unlock(&port->port_lock);
2f69ae01 2650 clear_bit(__EHEA_DISABLE_PORT_RESET, &port->flags);
7a291083
JBT		 2651 return ret;
2652}
2653
22559c5d 2654static void ehea_purge_sq(struct ehea_qp *orig_qp)
2c69448b
JBT		 2655{
2656 struct ehea_qp qp = *orig_qp;
2657 struct ehea_qp_init_attr *init_attr = &qp.init_attr;
2658 struct ehea_swqe *swqe;
2659 int wqe_index;
2660 int i;
2661
2662 for (i = 0; i < init_attr->act_nr_send_wqes; i++) {
2663 swqe = ehea_get_swqe(&qp, &wqe_index);
2664 swqe->tx_control |= EHEA_SWQE_PURGE;
2665 }
2666}
2667
22559c5d 2668static void ehea_flush_sq(struct ehea_port *port)
44fb3126
TK		 2669{
2670 int i;
2671
2672 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
2673 struct ehea_port_res *pr = &port->port_res[i];
2674 int swqe_max = pr->sq_skba_size - 2 - pr->swqe_ll_count;
2675 int k = 0;
2676 while (atomic_read(&pr->swqe_avail) < swqe_max) {
2677 msleep(5);
2678 if (++k == 20)
2679 break;
2680 }
2681 }
2682}
2683
2c69448b
JBT		 2684int ehea_stop_qps(struct net_device *dev)
2685{
2686 struct ehea_port *port = netdev_priv(dev);
2687 struct ehea_adapter *adapter = port->adapter;
508d2b5d 2688 struct hcp_modify_qp_cb0 *cb0;
2c69448b
JBT		 2689 int ret = -EIO;
2690 int dret;
2691 int i;
2692 u64 hret;
2693 u64 dummy64 = 0;
2694 u16 dummy16 = 0;
2695
3faf2693 2696 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
2c69448b
JBT		 2697 if (!cb0) {
2698 ret = -ENOMEM;
2699 goto out;
2700 }
2701
2702 for (i = 0; i < (port->num_def_qps + port->num_add_tx_qps); i++) {
2703 struct ehea_port_res *pr = &port->port_res[i];
2704 struct ehea_qp *qp = pr->qp;
2705
2706 /* Purge send queue */
2707 ehea_purge_sq(qp);
2708
2709 /* Disable queue pair */
2710 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2711 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2712 cb0);
2713 if (hret != H_SUCCESS) {
2714 ehea_error("query_ehea_qp failed (1)");
2715 goto out;
2716 }
2717
2718 cb0->qp_ctl_reg = (cb0->qp_ctl_reg & H_QP_CR_RES_STATE) << 8;
2719 cb0->qp_ctl_reg &= ~H_QP_CR_ENABLED;
2720
2721 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2722 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG,
2723 1), cb0, &dummy64,
2724 &dummy64, &dummy16, &dummy16);
2725 if (hret != H_SUCCESS) {
2726 ehea_error("modify_ehea_qp failed (1)");
2727 goto out;
2728 }
2729
2730 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2731 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2732 cb0);
2733 if (hret != H_SUCCESS) {
2734 ehea_error("query_ehea_qp failed (2)");
2735 goto out;
2736 }
2737
2738 /* deregister shared memory regions */
2739 dret = ehea_rem_smrs(pr);
2740 if (dret) {
2741 ehea_error("unreg shared memory region failed");
2742 goto out;
2743 }
2744 }
2745
2746 ret = 0;
2747out:
3faf2693 2748 free_page((unsigned long)cb0);
2c69448b
JBT		 2749
2750 return ret;
2751}
2752
508d2b5d 2753void ehea_update_rqs(struct ehea_qp *orig_qp, struct ehea_port_res *pr)
2c69448b
JBT		 2754{
2755 struct ehea_qp qp = *orig_qp;
2756 struct ehea_qp_init_attr *init_attr = &qp.init_attr;
2757 struct ehea_rwqe *rwqe;
2758 struct sk_buff **skba_rq2 = pr->rq2_skba.arr;
2759 struct sk_buff **skba_rq3 = pr->rq3_skba.arr;
2760 struct sk_buff *skb;
2761 u32 lkey = pr->recv_mr.lkey;
2762
2763
2764 int i;
2765 int index;
2766
2767 for (i = 0; i < init_attr->act_nr_rwqes_rq2 + 1; i++) {
2768 rwqe = ehea_get_next_rwqe(&qp, 2);
2769 rwqe->sg_list[0].l_key = lkey;
2770 index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, rwqe->wr_id);
2771 skb = skba_rq2[index];
2772 if (skb)
2773 rwqe->sg_list[0].vaddr = ehea_map_vaddr(skb->data);
2774 }
2775
2776 for (i = 0; i < init_attr->act_nr_rwqes_rq3 + 1; i++) {
2777 rwqe = ehea_get_next_rwqe(&qp, 3);
2778 rwqe->sg_list[0].l_key = lkey;
2779 index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, rwqe->wr_id);
2780 skb = skba_rq3[index];
2781 if (skb)
2782 rwqe->sg_list[0].vaddr = ehea_map_vaddr(skb->data);
2783 }
2784}
2785
2786int ehea_restart_qps(struct net_device *dev)
2787{
2788 struct ehea_port *port = netdev_priv(dev);
2789 struct ehea_adapter *adapter = port->adapter;
2790 int ret = 0;
2791 int i;
2792
508d2b5d 2793 struct hcp_modify_qp_cb0 *cb0;
2c69448b
JBT		 2794 u64 hret;
2795 u64 dummy64 = 0;
2796 u16 dummy16 = 0;
2797
3faf2693 2798 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
2c69448b
JBT		 2799 if (!cb0) {
2800 ret = -ENOMEM;
2801 goto out;
2802 }
2803
2804 for (i = 0; i < (port->num_def_qps + port->num_add_tx_qps); i++) {
2805 struct ehea_port_res *pr = &port->port_res[i];
2806 struct ehea_qp *qp = pr->qp;
2807
2808 ret = ehea_gen_smrs(pr);
2809 if (ret) {
2810 ehea_error("creation of shared memory regions failed");
2811 goto out;
2812 }
2813
2814 ehea_update_rqs(qp, pr);
2815
2816 /* Enable queue pair */
2817 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2818 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2819 cb0);
2820 if (hret != H_SUCCESS) {
2821 ehea_error("query_ehea_qp failed (1)");
2822 goto out;
2823 }
2824
2825 cb0->qp_ctl_reg = (cb0->qp_ctl_reg & H_QP_CR_RES_STATE) << 8;
2826 cb0->qp_ctl_reg |= H_QP_CR_ENABLED;
2827
2828 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2829 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG,
2830 1), cb0, &dummy64,
2831 &dummy64, &dummy16, &dummy16);
2832 if (hret != H_SUCCESS) {
2833 ehea_error("modify_ehea_qp failed (1)");
2834 goto out;
2835 }
2836
2837 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2838 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2839 cb0);
2840 if (hret != H_SUCCESS) {
2841 ehea_error("query_ehea_qp failed (2)");
2842 goto out;
2843 }
2844
2845 /* refill entire queue */
2846 ehea_refill_rq1(pr, pr->rq1_skba.index, 0);
2847 ehea_refill_rq2(pr, 0);
2848 ehea_refill_rq3(pr, 0);
2849 }
2850out:
3faf2693 2851 free_page((unsigned long)cb0);
2c69448b
JBT		 2852
2853 return ret;
2854}
2855
c4028958 2856static void ehea_reset_port(struct work_struct *work)
7a291083
JBT		 2857{
2858 int ret;
c4028958
DH		 2859 struct ehea_port *port =
2860 container_of(work, struct ehea_port, reset_task);
2861 struct net_device *dev = port->netdev;
7a291083 2862
099473c1 2863 mutex_lock(&dlpar_mem_lock);
7a291083 2864 port->resets++;
a5af6ad3 2865 mutex_lock(&port->port_lock);
7a291083 2866 netif_stop_queue(dev);
bea3348e
SH		 2867
2868 port_napi_disable(port);
7a291083 2869
44c82152 2870 ehea_down(dev);
7a291083
JBT		 2871
2872 ret = ehea_up(dev);
44c82152 2873 if (ret)
7a291083 2874 goto out;
7a291083 2875
2c69448b
JBT		 2876 ehea_set_multicast_list(dev);
2877
7a291083
JBT		 2878 if (netif_msg_timer(port))
2879 ehea_info("Device %s resetted successfully", dev->name);
2880
bea3348e
SH		 2881 port_napi_enable(port);
2882
7a291083
JBT		 2883 netif_wake_queue(dev);
2884out:
a5af6ad3 2885 mutex_unlock(&port->port_lock);
099473c1 2886 mutex_unlock(&dlpar_mem_lock);
7a291083
JBT		 2887}
2888
44c82152
TK		 2889static void ehea_rereg_mrs(struct work_struct *work)
2890{
2891 int ret, i;
2892 struct ehea_adapter *adapter;
2893
d4f12daf 2894 ehea_info("LPAR memory changed - re-initializing driver");
44c82152
TK		 2895
2896 list_for_each_entry(adapter, &adapter_list, list)
2897 if (adapter->active_ports) {
2898 /* Shutdown all ports */
2899 for (i = 0; i < EHEA_MAX_PORTS; i++) {
2900 struct ehea_port *port = adapter->port[i];
a5af6ad3 2901 struct net_device *dev;
44c82152 2902
a5af6ad3
DW		 2903 if (!port)
2904 continue;
44c82152 2905
a5af6ad3
DW		 2906 dev = port->netdev;
2907
2908 if (dev->flags & IFF_UP) {
2909 mutex_lock(&port->port_lock);
2910 netif_stop_queue(dev);
df39e8ba 2911 ehea_flush_sq(port);
a5af6ad3
DW		 2912 ret = ehea_stop_qps(dev);
2913 if (ret) {
2914 mutex_unlock(&port->port_lock);
2915 goto out;
44c82152 2916 }
a5af6ad3
DW		 2917 port_napi_disable(port);
2918 mutex_unlock(&port->port_lock);
44c82152
TK		 2919 }
2920 }
2921
2922 /* Unregister old memory region */
2923 ret = ehea_rem_mr(&adapter->mr);
2924 if (ret) {
2925 ehea_error("unregister MR failed - driver"
2926 " inoperable!");
2927 goto out;
2928 }
2929 }
2930
44c82152
TK		 2931 clear_bit(__EHEA_STOP_XFER, &ehea_driver_flags);
2932
2933 list_for_each_entry(adapter, &adapter_list, list)
2934 if (adapter->active_ports) {
2935 /* Register new memory region */
2936 ret = ehea_reg_kernel_mr(adapter, &adapter->mr);
2937 if (ret) {
2938 ehea_error("register MR failed - driver"
2939 " inoperable!");
2940 goto out;
2941 }
2942
2943 /* Restart all ports */
2944 for (i = 0; i < EHEA_MAX_PORTS; i++) {
2945 struct ehea_port *port = adapter->port[i];
2946
2947 if (port) {
2948 struct net_device *dev = port->netdev;
2949
2950 if (dev->flags & IFF_UP) {
a5af6ad3 2951 mutex_lock(&port->port_lock);
2c69448b
JBT		 2952 port_napi_enable(port);
2953 ret = ehea_restart_qps(dev);
2954 if (!ret)
44c82152 2955 netif_wake_queue(dev);
a5af6ad3 2956 mutex_unlock(&port->port_lock);
44c82152
TK		 2957 }
2958 }
2959 }
2960 }
68905eb4 2961 ehea_info("re-initializing driver complete");
44c82152
TK		 2962out:
2963 return;
2964}
2965
7a291083
JBT		 2966static void ehea_tx_watchdog(struct net_device *dev)
2967{
2968 struct ehea_port *port = netdev_priv(dev);
2969
2c69448b
JBT		 2970 if (netif_carrier_ok(dev) &&
2971 !test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))
2f69ae01 2972 ehea_schedule_port_reset(port);
7a291083
JBT		 2973}
2974
2975int ehea_sense_adapter_attr(struct ehea_adapter *adapter)
2976{
2977 struct hcp_query_ehea *cb;
2978 u64 hret;
2979 int ret;
2980
3faf2693 2981 cb = (void *)get_zeroed_page(GFP_KERNEL);
7a291083
JBT		 2982 if (!cb) {
2983 ret = -ENOMEM;
2984 goto out;
2985 }
2986
2987 hret = ehea_h_query_ehea(adapter->handle, cb);
2988
2989 if (hret != H_SUCCESS) {
2990 ret = -EIO;
2991 goto out_herr;
2992 }
2993
7a291083
JBT		 2994 adapter->max_mc_mac = cb->max_mc_mac - 1;
2995 ret = 0;
2996
2997out_herr:
3faf2693 2998 free_page((unsigned long)cb);
7a291083
JBT		 2999out:
3000 return ret;
3001}
3002
1acf2318 3003int ehea_get_jumboframe_status(struct ehea_port *port, int *jumbo)
7a291083 3004{
7a291083 3005 struct hcp_ehea_port_cb4 *cb4;
1acf2318
JBT		 3006 u64 hret;
3007 int ret = 0;
7a291083 3008
1acf2318 3009 *jumbo = 0;
7a291083 3010
1acf2318 3011 /* (Try to) enable *jumbo frames */
3faf2693 3012 cb4 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083
JBT		 3013 if (!cb4) {
3014 ehea_error("no mem for cb4");
1acf2318
JBT		 3015 ret = -ENOMEM;
3016 goto out;
7a291083 3017 } else {
1acf2318 3018 hret = ehea_h_query_ehea_port(port->adapter->handle,
9c750b7d
TK		 3019 port->logical_port_id,
3020 H_PORT_CB4,
3021 H_PORT_CB4_JUMBO, cb4);
9c750b7d
TK		 3022 if (hret == H_SUCCESS) {
3023 if (cb4->jumbo_frame)
1acf2318 3024 *jumbo = 1;
9c750b7d
TK		 3025 else {
3026 cb4->jumbo_frame = 1;
1acf2318
JBT		 3027 hret = ehea_h_modify_ehea_port(port->adapter->
3028 handle,
9c750b7d 3029 port->
1acf2318 3030 logical_port_id,
9c750b7d
TK		 3031 H_PORT_CB4,
3032 H_PORT_CB4_JUMBO,
3033 cb4);
3034 if (hret == H_SUCCESS)
1acf2318 3035 *jumbo = 1;
9c750b7d 3036 }
1acf2318
JBT		 3037 } else
3038 ret = -EINVAL;
3039
3faf2693 3040 free_page((unsigned long)cb4);
7a291083 3041 }
1acf2318
JBT		 3042out:
3043 return ret;
3044}
3045
3046static ssize_t ehea_show_port_id(struct device *dev,
3047 struct device_attribute *attr, char *buf)
3048{
3049 struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev);
a8e34fda 3050 return sprintf(buf, "%d", port->logical_port_id);
1acf2318
JBT		 3051}
3052
3053static DEVICE_ATTR(log_port_id, S_IRUSR | S_IRGRP | S_IROTH, ehea_show_port_id,
3054 NULL);
3055
3056static void __devinit logical_port_release(struct device *dev)
3057{
3058 struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev);
61c7a080 3059 of_node_put(port->ofdev.dev.of_node);
1acf2318
JBT		 3060}
3061
3062static struct device *ehea_register_port(struct ehea_port *port,
3063 struct device_node *dn)
3064{
3065 int ret;
3066
61c7a080 3067 port->ofdev.dev.of_node = of_node_get(dn);
6b08f3ae 3068 port->ofdev.dev.parent = &port->adapter->ofdev->dev;
d1dea38d 3069 port->ofdev.dev.bus = &ibmebus_bus_type;
1acf2318 3070
db1d7bf7 3071 dev_set_name(&port->ofdev.dev, "port%d", port_name_cnt++);
1acf2318
JBT		 3072 port->ofdev.dev.release = logical_port_release;
3073
3074 ret = of_device_register(&port->ofdev);
3075 if (ret) {
3076 ehea_error("failed to register device. ret=%d", ret);
3077 goto out;
3078 }
3079
3080 ret = device_create_file(&port->ofdev.dev, &dev_attr_log_port_id);
d1d25aab 3081 if (ret) {
1acf2318
JBT		 3082 ehea_error("failed to register attributes, ret=%d", ret);
3083 goto out_unreg_of_dev;
3084 }
e542aa6b 3085
1acf2318
JBT		 3086 return &port->ofdev.dev;
3087
3088out_unreg_of_dev:
3089 of_device_unregister(&port->ofdev);
3090out:
3091 return NULL;
3092}
3093
3094static void ehea_unregister_port(struct ehea_port *port)
3095{
3096 device_remove_file(&port->ofdev.dev, &dev_attr_log_port_id);
3097 of_device_unregister(&port->ofdev);
3098}
3099
086c1b2c
TK		 3100static const struct net_device_ops ehea_netdev_ops = {
3101 .ndo_open = ehea_open,
3102 .ndo_stop = ehea_stop,
3103 .ndo_start_xmit = ehea_start_xmit,
3104#ifdef CONFIG_NET_POLL_CONTROLLER
3105 .ndo_poll_controller = ehea_netpoll,
3106#endif
3107 .ndo_get_stats = ehea_get_stats,
3108 .ndo_set_mac_address = ehea_set_mac_addr,
240c102d 3109 .ndo_validate_addr = eth_validate_addr,
086c1b2c
TK		 3110 .ndo_set_multicast_list = ehea_set_multicast_list,
3111 .ndo_change_mtu = ehea_change_mtu,
3112 .ndo_vlan_rx_register = ehea_vlan_rx_register,
3113 .ndo_vlan_rx_add_vid = ehea_vlan_rx_add_vid,
32e8f9a8
AB		 3114 .ndo_vlan_rx_kill_vid = ehea_vlan_rx_kill_vid,
3115 .ndo_tx_timeout = ehea_tx_watchdog,
086c1b2c
TK		 3116};
3117
1acf2318
JBT		 3118struct ehea_port *ehea_setup_single_port(struct ehea_adapter *adapter,
3119 u32 logical_port_id,
3120 struct device_node *dn)
3121{
3122 int ret;
3123 struct net_device *dev;
3124 struct ehea_port *port;
3125 struct device *port_dev;
3126 int jumbo;
3127
3128 /* allocate memory for the port structures */
3129 dev = alloc_etherdev(sizeof(struct ehea_port));
3130
3131 if (!dev) {
3132 ehea_error("no mem for net_device");
3133 ret = -ENOMEM;
3134 goto out_err;
3135 }
3136
3137 port = netdev_priv(dev);
3138
a5af6ad3 3139 mutex_init(&port->port_lock);
1acf2318
JBT		 3140 port->state = EHEA_PORT_DOWN;
3141 port->sig_comp_iv = sq_entries / 10;
3142
3143 port->adapter = adapter;
3144 port->netdev = dev;
3145 port->logical_port_id = logical_port_id;
3146
3147 port->msg_enable = netif_msg_init(msg_level, EHEA_MSG_DEFAULT);
3148
3149 port->mc_list = kzalloc(sizeof(struct ehea_mc_list), GFP_KERNEL);
3150 if (!port->mc_list) {
3151 ret = -ENOMEM;
3152 goto out_free_ethdev;
3153 }
3154
3155 INIT_LIST_HEAD(&port->mc_list->list);
3156
3157 ret = ehea_sense_port_attr(port);
3158 if (ret)
3159 goto out_free_mc_list;
3160
3161 port_dev = ehea_register_port(port, dn);
3162 if (!port_dev)
3163 goto out_free_mc_list;
3164
3165 SET_NETDEV_DEV(dev, port_dev);
7a291083
JBT		 3166
3167 /* initialize net_device structure */
7a291083
JBT		 3168 memcpy(dev->dev_addr, &port->mac_addr, ETH_ALEN);
3169
086c1b2c
TK		 3170 dev->netdev_ops = &ehea_netdev_ops;
3171 ehea_set_ethtool_ops(dev);
3172
7a291083 3173 dev->features = NETIF_F_SG | NETIF_F_FRAGLIST | NETIF_F_TSO
dc01c447 3174 | NETIF_F_HIGHDMA | NETIF_F_IP_CSUM | NETIF_F_HW_VLAN_TX
7a291083
JBT		 3175 | NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_FILTER
3176 | NETIF_F_LLTX;
7a291083
JBT		 3177 dev->watchdog_timeo = EHEA_WATCH_DOG_TIMEOUT;
3178
c4028958 3179 INIT_WORK(&port->reset_task, ehea_reset_port);
7a291083
JBT		 3180
3181 ret = register_netdev(dev);
3182 if (ret) {
3183 ehea_error("register_netdev failed. ret=%d", ret);
21eee2dd 3184 goto out_unreg_port;
7a291083
JBT		 3185 }
3186
d4dc4ec9
JBT		 3187 port->lro_max_aggr = lro_max_aggr;
3188
1acf2318 3189 ret = ehea_get_jumboframe_status(port, &jumbo);
e542aa6b 3190 if (ret)
1acf2318
JBT		 3191 ehea_error("failed determining jumbo frame status for %s",
3192 port->netdev->name);
3193
9c750b7d
TK		 3194 ehea_info("%s: Jumbo frames are %sabled", dev->name,
3195 jumbo == 1 ? "en" : "dis");
3196
44c82152
TK		 3197 adapter->active_ports++;
3198
1acf2318 3199 return port;
7a291083 3200
1acf2318
JBT		 3201out_unreg_port:
3202 ehea_unregister_port(port);
3203
3204out_free_mc_list:
7a291083 3205 kfree(port->mc_list);
1acf2318
JBT		 3206
3207out_free_ethdev:
3208 free_netdev(dev);
3209
3210out_err:
3211 ehea_error("setting up logical port with id=%d failed, ret=%d",
3212 logical_port_id, ret);
3213 return NULL;
3214}
3215
3216static void ehea_shutdown_single_port(struct ehea_port *port)
3217{
7fb1c2ac 3218 struct ehea_adapter *adapter = port->adapter;
1acf2318
JBT		 3219 unregister_netdev(port->netdev);
3220 ehea_unregister_port(port);
3221 kfree(port->mc_list);
3222 free_netdev(port->netdev);
7fb1c2ac 3223 adapter->active_ports--;
7a291083
JBT		 3224}
3225
3226static int ehea_setup_ports(struct ehea_adapter *adapter)
3227{
1acf2318
JBT		 3228 struct device_node *lhea_dn;
3229 struct device_node *eth_dn = NULL;
d1d25aab 3230
9f9a3b8a 3231 const u32 *dn_log_port_id;
1acf2318
JBT		 3232 int i = 0;
3233
61c7a080 3234 lhea_dn = adapter->ofdev->dev.of_node;
1eef4e04 3235 while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) {
e542aa6b 3236
40cd3a45 3237 dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no",
d1d25aab 3238 NULL);
1acf2318
JBT		 3239 if (!dn_log_port_id) {
3240 ehea_error("bad device node: eth_dn name=%s",
3241 eth_dn->full_name);
3242 continue;
3243 }
7a291083 3244
1211bb6d
TK		 3245 if (ehea_add_adapter_mr(adapter)) {
3246 ehea_error("creating MR failed");
3247 of_node_put(eth_dn);
3248 return -EIO;
3249 }
3250
1acf2318
JBT		 3251 adapter->port[i] = ehea_setup_single_port(adapter,
3252 *dn_log_port_id,
3253 eth_dn);
7a291083 3254 if (adapter->port[i])
1acf2318 3255 ehea_info("%s -> logical port id #%d",
e542aa6b 3256 adapter->port[i]->netdev->name,
1acf2318 3257 *dn_log_port_id);
1211bb6d
TK		 3258 else
3259 ehea_remove_adapter_mr(adapter);
3260
1acf2318 3261 i++;
ee289b64 3262 }
1211bb6d 3263 return 0;
1acf2318
JBT		 3264}
3265
e542aa6b
JBT		 3266static struct device_node *ehea_get_eth_dn(struct ehea_adapter *adapter,
3267 u32 logical_port_id)
1acf2318
JBT		 3268{
3269 struct device_node *lhea_dn;
3270 struct device_node *eth_dn = NULL;
9f9a3b8a 3271 const u32 *dn_log_port_id;
1acf2318 3272
61c7a080 3273 lhea_dn = adapter->ofdev->dev.of_node;
1eef4e04 3274 while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) {
e542aa6b 3275
40cd3a45 3276 dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no",
d1d25aab 3277 NULL);
1acf2318
JBT		 3278 if (dn_log_port_id)
3279 if (*dn_log_port_id == logical_port_id)
3280 return eth_dn;
ee289b64 3281 }
1acf2318
JBT		 3282
3283 return NULL;
3284}
3285
3286static ssize_t ehea_probe_port(struct device *dev,
3287 struct device_attribute *attr,
3288 const char *buf, size_t count)
3289{
c7ae011d 3290 struct ehea_adapter *adapter = dev_get_drvdata(dev);
1acf2318
JBT		 3291 struct ehea_port *port;
3292 struct device_node *eth_dn = NULL;
3293 int i;
3294
3295 u32 logical_port_id;
3296
a8e34fda 3297 sscanf(buf, "%d", &logical_port_id);
1acf2318
JBT		 3298
3299 port = ehea_get_port(adapter, logical_port_id);
3300
3301 if (port) {
3302 ehea_info("adding port with logical port id=%d failed. port "
3303 "already configured as %s.", logical_port_id,
3304 port->netdev->name);
3305 return -EINVAL;
7a291083 3306 }
e542aa6b 3307
1acf2318 3308 eth_dn = ehea_get_eth_dn(adapter, logical_port_id);
7a291083 3309
1acf2318
JBT		 3310 if (!eth_dn) {
3311 ehea_info("no logical port with id %d found", logical_port_id);
3312 return -EINVAL;
3313 }
e542aa6b 3314
1211bb6d
TK		 3315 if (ehea_add_adapter_mr(adapter)) {
3316 ehea_error("creating MR failed");
3317 return -EIO;
3318 }
3319
1acf2318 3320 port = ehea_setup_single_port(adapter, logical_port_id, eth_dn);
7a291083 3321
1eef4e04
JBT		 3322 of_node_put(eth_dn);
3323
1acf2318 3324 if (port) {
508d2b5d 3325 for (i = 0; i < EHEA_MAX_PORTS; i++)
1acf2318
JBT		 3326 if (!adapter->port[i]) {
3327 adapter->port[i] = port;
3328 break;
3329 }
7a291083 3330
1acf2318
JBT		 3331 ehea_info("added %s (logical port id=%d)", port->netdev->name,
3332 logical_port_id);
1211bb6d
TK		 3333 } else {
3334 ehea_remove_adapter_mr(adapter);
e542aa6b 3335 return -EIO;
1211bb6d 3336 }
7a291083 3337
1acf2318
JBT		 3338 return (ssize_t) count;
3339}
3340
3341static ssize_t ehea_remove_port(struct device *dev,
3342 struct device_attribute *attr,
3343 const char *buf, size_t count)
3344{
c7ae011d 3345 struct ehea_adapter *adapter = dev_get_drvdata(dev);
1acf2318
JBT		 3346 struct ehea_port *port;
3347 int i;
3348 u32 logical_port_id;
3349
a8e34fda 3350 sscanf(buf, "%d", &logical_port_id);
1acf2318
JBT		 3351
3352 port = ehea_get_port(adapter, logical_port_id);
3353
3354 if (port) {
3355 ehea_info("removed %s (logical port id=%d)", port->netdev->name,
3356 logical_port_id);
3357
3358 ehea_shutdown_single_port(port);
3359
508d2b5d 3360 for (i = 0; i < EHEA_MAX_PORTS; i++)
1acf2318
JBT		 3361 if (adapter->port[i] == port) {
3362 adapter->port[i] = NULL;
3363 break;
3364 }
3365 } else {
3366 ehea_error("removing port with logical port id=%d failed. port "
3367 "not configured.", logical_port_id);
3368 return -EINVAL;
3369 }
3370
1211bb6d
TK		 3371 ehea_remove_adapter_mr(adapter);
3372
1acf2318
JBT		 3373 return (ssize_t) count;
3374}
3375
3376static DEVICE_ATTR(probe_port, S_IWUSR, NULL, ehea_probe_port);
3377static DEVICE_ATTR(remove_port, S_IWUSR, NULL, ehea_remove_port);
3378
6b08f3ae 3379int ehea_create_device_sysfs(struct of_device *dev)
1acf2318 3380{
6b08f3ae 3381 int ret = device_create_file(&dev->dev, &dev_attr_probe_port);
1acf2318
JBT		 3382 if (ret)
3383 goto out;
3384
6b08f3ae 3385 ret = device_create_file(&dev->dev, &dev_attr_remove_port);
1acf2318 3386out:
7a291083
JBT		 3387 return ret;
3388}
3389
6b08f3ae 3390void ehea_remove_device_sysfs(struct of_device *dev)
1acf2318 3391{
6b08f3ae
JF		 3392 device_remove_file(&dev->dev, &dev_attr_probe_port);
3393 device_remove_file(&dev->dev, &dev_attr_remove_port);
1acf2318
JBT		 3394}
3395
6b08f3ae 3396static int __devinit ehea_probe_adapter(struct of_device *dev,
1acf2318 3397 const struct of_device_id *id)
7a291083
JBT		 3398{
3399 struct ehea_adapter *adapter;
9f9a3b8a 3400 const u64 *adapter_handle;
7a291083
JBT		 3401 int ret;
3402
61c7a080 3403 if (!dev || !dev->dev.of_node) {
1eef4e04
JBT		 3404 ehea_error("Invalid ibmebus device probed");
3405 return -EINVAL;
3406 }
3407
7a291083
JBT		 3408 adapter = kzalloc(sizeof(*adapter), GFP_KERNEL);
3409 if (!adapter) {
3410 ret = -ENOMEM;
6b08f3ae 3411 dev_err(&dev->dev, "no mem for ehea_adapter\n");
7a291083
JBT		 3412 goto out;
3413 }
3414
44c82152
TK		 3415 list_add(&adapter->list, &adapter_list);
3416
6b08f3ae 3417 adapter->ofdev = dev;
1acf2318 3418
61c7a080 3419 adapter_handle = of_get_property(dev->dev.of_node, "ibm,hea-handle",
d1d25aab 3420 NULL);
061bf3cd
TK		 3421 if (adapter_handle)
3422 adapter->handle = *adapter_handle;
3423
3424 if (!adapter->handle) {
6b08f3ae 3425 dev_err(&dev->dev, "failed getting handle for adapter"
61c7a080 3426 " '%s'\n", dev->dev.of_node->full_name);
7a291083
JBT		 3427 ret = -ENODEV;
3428 goto out_free_ad;
3429 }
3430
7a291083
JBT		 3431 adapter->pd = EHEA_PD_ID;
3432
c7ae011d 3433 dev_set_drvdata(&dev->dev, adapter);
7a291083 3434
7a291083
JBT		 3435
3436 /* initialize adapter and ports */
3437 /* get adapter properties */
3438 ret = ehea_sense_adapter_attr(adapter);
3439 if (ret) {
898eb71c 3440 dev_err(&dev->dev, "sense_adapter_attr failed: %d\n", ret);
1211bb6d 3441 goto out_free_ad;
7a291083 3442 }
7a291083
JBT		 3443
3444 adapter->neq = ehea_create_eq(adapter,
3445 EHEA_NEQ, EHEA_MAX_ENTRIES_EQ, 1);
3446 if (!adapter->neq) {
1eef4e04 3447 ret = -EIO;
898eb71c 3448 dev_err(&dev->dev, "NEQ creation failed\n");
1211bb6d 3449 goto out_free_ad;
7a291083
JBT		 3450 }
3451
3452 tasklet_init(&adapter->neq_tasklet, ehea_neq_tasklet,
3453 (unsigned long)adapter);
3454
6b08f3ae 3455 ret = ibmebus_request_irq(adapter->neq->attr.ist1,
38515e90 3456 ehea_interrupt_neq, IRQF_DISABLED,
7a291083
JBT		 3457 "ehea_neq", adapter);
3458 if (ret) {
898eb71c 3459 dev_err(&dev->dev, "requesting NEQ IRQ failed\n");
7a291083
JBT		 3460 goto out_kill_eq;
3461 }
3462
1eef4e04
JBT		 3463 ret = ehea_create_device_sysfs(dev);
3464 if (ret)
3bf76b81 3465 goto out_free_irq;
1acf2318 3466
7a291083
JBT		 3467 ret = ehea_setup_ports(adapter);
3468 if (ret) {
898eb71c 3469 dev_err(&dev->dev, "setup_ports failed\n");
1acf2318 3470 goto out_rem_dev_sysfs;
7a291083
JBT		 3471 }
3472
3473 ret = 0;
3474 goto out;
3475
1acf2318
JBT		 3476out_rem_dev_sysfs:
3477 ehea_remove_device_sysfs(dev);
3478
7a291083 3479out_free_irq:
6b08f3ae 3480 ibmebus_free_irq(adapter->neq->attr.ist1, adapter);
7a291083
JBT		 3481
3482out_kill_eq:
3483 ehea_destroy_eq(adapter->neq);
3484
7a291083 3485out_free_ad:
51621fbd 3486 list_del(&adapter->list);
7a291083 3487 kfree(adapter);
21eee2dd 3488
7a291083 3489out:
21eee2dd 3490 ehea_update_firmware_handles();
52e21b1b 3491
7a291083
JBT		 3492 return ret;
3493}
3494
6b08f3ae 3495static int __devexit ehea_remove(struct of_device *dev)
7a291083 3496{
c7ae011d 3497 struct ehea_adapter *adapter = dev_get_drvdata(&dev->dev);
7a291083
JBT		 3498 int i;
3499
1acf2318 3500 for (i = 0; i < EHEA_MAX_PORTS; i++)
7a291083
JBT		 3501 if (adapter->port[i]) {
3502 ehea_shutdown_single_port(adapter->port[i]);
3503 adapter->port[i] = NULL;
3504 }
1acf2318
JBT		 3505
3506 ehea_remove_device_sysfs(dev);
3507
3bf76b81 3508 flush_scheduled_work();
7a291083 3509
6b08f3ae 3510 ibmebus_free_irq(adapter->neq->attr.ist1, adapter);
d4150a27 3511 tasklet_kill(&adapter->neq_tasklet);
7a291083
JBT		 3512
3513 ehea_destroy_eq(adapter->neq);
1211bb6d 3514 ehea_remove_adapter_mr(adapter);
44c82152 3515 list_del(&adapter->list);
7a291083 3516 kfree(adapter);
44c82152 3517
21eee2dd 3518 ehea_update_firmware_handles();
21eee2dd 3519
7a291083
JBT		 3520 return 0;
3521}
3522
21eee2dd
TK		 3523void ehea_crash_handler(void)
3524{
3525 int i;
3526
3527 if (ehea_fw_handles.arr)
3528 for (i = 0; i < ehea_fw_handles.num_entries; i++)
3529 ehea_h_free_resource(ehea_fw_handles.arr[i].adh,
3530 ehea_fw_handles.arr[i].fwh,
3531 FORCE_FREE);
3532
3533 if (ehea_bcmc_regs.arr)
3534 for (i = 0; i < ehea_bcmc_regs.num_entries; i++)
3535 ehea_h_reg_dereg_bcmc(ehea_bcmc_regs.arr[i].adh,
3536 ehea_bcmc_regs.arr[i].port_id,
3537 ehea_bcmc_regs.arr[i].reg_type,
3538 ehea_bcmc_regs.arr[i].macaddr,
3539 0, H_DEREG_BCMC);
3540}
3541
48cfb14f
HH		 3542static int ehea_mem_notifier(struct notifier_block *nb,
3543 unsigned long action, void *data)
3544{
a7c561f2 3545 int ret = NOTIFY_BAD;
d4f12daf 3546 struct memory_notify *arg = data;
a7c561f2 3547
099473c1 3548 mutex_lock(&dlpar_mem_lock);
a7c561f2 3549
48cfb14f 3550 switch (action) {
d4f12daf
HH		 3551 case MEM_CANCEL_OFFLINE:
3552 ehea_info("memory offlining canceled");
3553 /* Readd canceled memory block */
3554 case MEM_ONLINE:
3555 ehea_info("memory is going online");
3876732c 3556 set_bit(__EHEA_STOP_XFER, &ehea_driver_flags);
d4f12daf 3557 if (ehea_add_sect_bmap(arg->start_pfn, arg->nr_pages))
a7c561f2 3558 goto out_unlock;
d4f12daf
HH		 3559 ehea_rereg_mrs(NULL);
3560 break;
3561 case MEM_GOING_OFFLINE:
3562 ehea_info("memory is going offline");
3876732c 3563 set_bit(__EHEA_STOP_XFER, &ehea_driver_flags);
d4f12daf 3564 if (ehea_rem_sect_bmap(arg->start_pfn, arg->nr_pages))
a7c561f2 3565 goto out_unlock;
48cfb14f
HH		 3566 ehea_rereg_mrs(NULL);
3567 break;
3568 default:
3569 break;
3570 }
52e21b1b
JBT		 3571
3572 ehea_update_firmware_handles();
a7c561f2 3573 ret = NOTIFY_OK;
52e21b1b 3574
a7c561f2
TK		 3575out_unlock:
3576 mutex_unlock(&dlpar_mem_lock);
a7c561f2 3577 return ret;
48cfb14f
HH		 3578}
3579
3580static struct notifier_block ehea_mem_nb = {
3581 .notifier_call = ehea_mem_notifier,
3582};
3583
2a6f4e49
JBT		 3584static int ehea_reboot_notifier(struct notifier_block *nb,
3585 unsigned long action, void *unused)
3586{
3587 if (action == SYS_RESTART) {
3588 ehea_info("Reboot: freeing all eHEA resources");
3589 ibmebus_unregister_driver(&ehea_driver);
3590 }
3591 return NOTIFY_DONE;
3592}
3593
3594static struct notifier_block ehea_reboot_nb = {
508d2b5d 3595 .notifier_call = ehea_reboot_notifier,
2a6f4e49
JBT		 3596};
3597
7a291083
JBT		 3598static int check_module_parm(void)
3599{
3600 int ret = 0;
3601
3602 if ((rq1_entries < EHEA_MIN_ENTRIES_QP) ||
3603 (rq1_entries > EHEA_MAX_ENTRIES_RQ1)) {
3604 ehea_info("Bad parameter: rq1_entries");
3605 ret = -EINVAL;
3606 }
3607 if ((rq2_entries < EHEA_MIN_ENTRIES_QP) ||
3608 (rq2_entries > EHEA_MAX_ENTRIES_RQ2)) {
3609 ehea_info("Bad parameter: rq2_entries");
3610 ret = -EINVAL;
3611 }
3612 if ((rq3_entries < EHEA_MIN_ENTRIES_QP) ||
3613 (rq3_entries > EHEA_MAX_ENTRIES_RQ3)) {
3614 ehea_info("Bad parameter: rq3_entries");
3615 ret = -EINVAL;
3616 }
3617 if ((sq_entries < EHEA_MIN_ENTRIES_QP) ||
3618 (sq_entries > EHEA_MAX_ENTRIES_SQ)) {
3619 ehea_info("Bad parameter: sq_entries");
3620 ret = -EINVAL;
3621 }
3622
3623 return ret;
3624}
3625
4c3ca4da
JBT		 3626static ssize_t ehea_show_capabilities(struct device_driver *drv,
3627 char *buf)
3628{
3629 return sprintf(buf, "%d", EHEA_CAPABILITIES);
3630}
3631
3632static DRIVER_ATTR(capabilities, S_IRUSR | S_IRGRP | S_IROTH,
3633 ehea_show_capabilities, NULL);
3634
7a291083
JBT		 3635int __init ehea_module_init(void)
3636{
3637 int ret;
3638
3639 printk(KERN_INFO "IBM eHEA ethernet device driver (Release %s)\n",
3640 DRV_VERSION);
3641
44c82152
TK		 3642
3643 INIT_WORK(&ehea_rereg_mr_task, ehea_rereg_mrs);
21eee2dd
TK		 3644 memset(&ehea_fw_handles, 0, sizeof(ehea_fw_handles));
3645 memset(&ehea_bcmc_regs, 0, sizeof(ehea_bcmc_regs));
3646
9f71a568 3647 mutex_init(&ehea_fw_handles.lock);
5c2cec14 3648 spin_lock_init(&ehea_bcmc_regs.lock);
44c82152 3649
7a291083
JBT		 3650 ret = check_module_parm();
3651 if (ret)
3652 goto out;
44c82152
TK		 3653
3654 ret = ehea_create_busmap();
3655 if (ret)
3656 goto out;
3657
21eee2dd
TK		 3658 ret = register_reboot_notifier(&ehea_reboot_nb);
3659 if (ret)
3660 ehea_info("failed registering reboot notifier");
3661
48cfb14f
HH		 3662 ret = register_memory_notifier(&ehea_mem_nb);
3663 if (ret)
3664 ehea_info("failed registering memory remove notifier");
3665
21eee2dd
TK		 3666 ret = crash_shutdown_register(&ehea_crash_handler);
3667 if (ret)
3668 ehea_info("failed registering crash handler");
2a6f4e49 3669
7a291083 3670 ret = ibmebus_register_driver(&ehea_driver);
4c3ca4da 3671 if (ret) {
7a291083 3672 ehea_error("failed registering eHEA device driver on ebus");
21eee2dd 3673 goto out2;
4c3ca4da
JBT		 3674 }
3675
3676 ret = driver_create_file(&ehea_driver.driver,
3677 &driver_attr_capabilities);
3678 if (ret) {
3679 ehea_error("failed to register capabilities attribute, ret=%d",
3680 ret);
21eee2dd 3681 goto out3;
4c3ca4da 3682 }
7a291083 3683
21eee2dd
TK		 3684 return ret;
3685
3686out3:
3687 ibmebus_unregister_driver(&ehea_driver);
3688out2:
48cfb14f 3689 unregister_memory_notifier(&ehea_mem_nb);
21eee2dd
TK		 3690 unregister_reboot_notifier(&ehea_reboot_nb);
3691 crash_shutdown_unregister(&ehea_crash_handler);
7a291083
JBT		 3692out:
3693 return ret;
3694}
3695
3696static void __exit ehea_module_exit(void)
3697{
21eee2dd
TK		 3698 int ret;
3699
3bf76b81 3700 flush_scheduled_work();
4c3ca4da 3701 driver_remove_file(&ehea_driver.driver, &driver_attr_capabilities);
7a291083 3702 ibmebus_unregister_driver(&ehea_driver);
2a6f4e49 3703 unregister_reboot_notifier(&ehea_reboot_nb);
21eee2dd
TK		 3704 ret = crash_shutdown_unregister(&ehea_crash_handler);
3705 if (ret)
3706 ehea_info("failed unregistering crash handler");
48cfb14f 3707 unregister_memory_notifier(&ehea_mem_nb);
21eee2dd
TK		 3708 kfree(ehea_fw_handles.arr);
3709 kfree(ehea_bcmc_regs.arr);
44c82152 3710 ehea_destroy_busmap();
7a291083
JBT		 3711}
3712
3713module_init(ehea_module_init);
3714module_exit(ehea_module_exit);
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