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[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>
35#include <linux/if_ether.h>
2a6f4e49
JBT		 36#include <linux/notifier.h>
37#include <linux/reboot.h>
48cfb14f 38#include <linux/memory.h>
21eee2dd 39#include <asm/kexec.h>
06f89edf 40#include <linux/mutex.h>
2a6f4e49 41
7a291083
JBT		 42#include <net/ip.h>
43
44#include "ehea.h"
45#include "ehea_qmr.h"
46#include "ehea_phyp.h"
47
48
49MODULE_LICENSE("GPL");
50MODULE_AUTHOR("Christoph Raisch <raisch@de.ibm.com>");
51MODULE_DESCRIPTION("IBM eServer HEA Driver");
52MODULE_VERSION(DRV_VERSION);
53
54
55static int msg_level = -1;
56static int rq1_entries = EHEA_DEF_ENTRIES_RQ1;
57static int rq2_entries = EHEA_DEF_ENTRIES_RQ2;
58static int rq3_entries = EHEA_DEF_ENTRIES_RQ3;
59static int sq_entries = EHEA_DEF_ENTRIES_SQ;
508d2b5d
DM		 60static int use_mcs;
61static int use_lro;
d4dc4ec9 62static int lro_max_aggr = EHEA_LRO_MAX_AGGR;
18604c54 63static int num_tx_qps = EHEA_NUM_TX_QP;
508d2b5d 64static int prop_carrier_state;
7a291083
JBT		 65
66module_param(msg_level, int, 0);
67module_param(rq1_entries, int, 0);
68module_param(rq2_entries, int, 0);
69module_param(rq3_entries, int, 0);
70module_param(sq_entries, int, 0);
8759cf76 71module_param(prop_carrier_state, int, 0);
18604c54 72module_param(use_mcs, int, 0);
d4dc4ec9
JBT		 73module_param(use_lro, int, 0);
74module_param(lro_max_aggr, int, 0);
18604c54 75module_param(num_tx_qps, int, 0);
7a291083 76
18604c54 77MODULE_PARM_DESC(num_tx_qps, "Number of TX-QPS");
7a291083 78MODULE_PARM_DESC(msg_level, "msg_level");
8759cf76
JBT		 79MODULE_PARM_DESC(prop_carrier_state, "Propagate carrier state of physical "
80 "port to stack. 1:yes, 0:no. Default = 0 ");
7a291083
JBT		 81MODULE_PARM_DESC(rq3_entries, "Number of entries for Receive Queue 3 "
82 "[2^x - 1], x = [6..14]. Default = "
83 __MODULE_STRING(EHEA_DEF_ENTRIES_RQ3) ")");
84MODULE_PARM_DESC(rq2_entries, "Number of entries for Receive Queue 2 "
85 "[2^x - 1], x = [6..14]. Default = "
86 __MODULE_STRING(EHEA_DEF_ENTRIES_RQ2) ")");
87MODULE_PARM_DESC(rq1_entries, "Number of entries for Receive Queue 1 "
88 "[2^x - 1], x = [6..14]. Default = "
89 __MODULE_STRING(EHEA_DEF_ENTRIES_RQ1) ")");
90MODULE_PARM_DESC(sq_entries, " Number of entries for the Send Queue "
91 "[2^x - 1], x = [6..14]. Default = "
92 __MODULE_STRING(EHEA_DEF_ENTRIES_SQ) ")");
18072a5b 93MODULE_PARM_DESC(use_mcs, " 0:NAPI, 1:Multiple receive queues, Default = 0 ");
7a291083 94
d4dc4ec9
JBT		 95MODULE_PARM_DESC(lro_max_aggr, " LRO: Max packets to be aggregated. Default = "
96 __MODULE_STRING(EHEA_LRO_MAX_AGGR));
97MODULE_PARM_DESC(use_lro, " Large Receive Offload, 1: enable, 0: disable, "
98 "Default = 0");
99
508d2b5d 100static int port_name_cnt;
44c82152 101static LIST_HEAD(adapter_list);
48e4cc77 102static unsigned long ehea_driver_flags;
44c82152 103struct work_struct ehea_rereg_mr_task;
06f89edf 104static DEFINE_MUTEX(dlpar_mem_lock);
21eee2dd
TK		 105struct ehea_fw_handle_array ehea_fw_handles;
106struct ehea_bcmc_reg_array ehea_bcmc_regs;
107
d1dea38d 108
6b08f3ae 109static int __devinit ehea_probe_adapter(struct of_device *dev,
d1d25aab 110 const struct of_device_id *id);
d1dea38d 111
6b08f3ae 112static int __devexit ehea_remove(struct of_device *dev);
d1dea38d
TK		 113
114static struct of_device_id ehea_device_table[] = {
115 {
116 .name = "lhea",
117 .compatible = "IBM,lhea",
118 },
119 {},
120};
b0afffe8 121MODULE_DEVICE_TABLE(of, ehea_device_table);
d1dea38d 122
6b08f3ae 123static struct of_platform_driver ehea_driver = {
d1dea38d 124 .name = "ehea",
6b08f3ae 125 .match_table = ehea_device_table,
d1dea38d
TK		 126 .probe = ehea_probe_adapter,
127 .remove = ehea_remove,
128};
129
508d2b5d
DM		 130void ehea_dump(void *adr, int len, char *msg)
131{
7a291083
JBT		 132 int x;
133 unsigned char *deb = adr;
134 for (x = 0; x < len; x += 16) {
a1c5a893 135 printk(DRV_NAME " %s adr=%p ofs=%04x %016llx %016llx\n", msg,
508d2b5d 136 deb, x, *((u64 *)&deb[0]), *((u64 *)&deb[8]));
7a291083
JBT		 137 deb += 16;
138 }
139}
140
2f69ae01
JBT		 141void ehea_schedule_port_reset(struct ehea_port *port)
142{
143 if (!test_bit(__EHEA_DISABLE_PORT_RESET, &port->flags))
144 schedule_work(&port->reset_task);
145}
146
21eee2dd
TK		 147static void ehea_update_firmware_handles(void)
148{
149 struct ehea_fw_handle_entry *arr = NULL;
150 struct ehea_adapter *adapter;
151 int num_adapters = 0;
152 int num_ports = 0;
153 int num_portres = 0;
154 int i = 0;
155 int num_fw_handles, k, l;
156
157 /* Determine number of handles */
158 list_for_each_entry(adapter, &adapter_list, list) {
159 num_adapters++;
160
161 for (k = 0; k < EHEA_MAX_PORTS; k++) {
162 struct ehea_port *port = adapter->port[k];
163
164 if (!port || (port->state != EHEA_PORT_UP))
165 continue;
166
167 num_ports++;
168 num_portres += port->num_def_qps + port->num_add_tx_qps;
169 }
170 }
171
172 num_fw_handles = num_adapters * EHEA_NUM_ADAPTER_FW_HANDLES +
173 num_ports * EHEA_NUM_PORT_FW_HANDLES +
174 num_portres * EHEA_NUM_PORTRES_FW_HANDLES;
175
176 if (num_fw_handles) {
177 arr = kzalloc(num_fw_handles * sizeof(*arr), GFP_KERNEL);
178 if (!arr)
179 return; /* Keep the existing array */
180 } else
181 goto out_update;
182
183 list_for_each_entry(adapter, &adapter_list, list) {
184 for (k = 0; k < EHEA_MAX_PORTS; k++) {
185 struct ehea_port *port = adapter->port[k];
186
187 if (!port || (port->state != EHEA_PORT_UP))
188 continue;
189
190 for (l = 0;
191 l < port->num_def_qps + port->num_add_tx_qps;
192 l++) {
193 struct ehea_port_res *pr = &port->port_res[l];
194
195 arr[i].adh = adapter->handle;
196 arr[i++].fwh = pr->qp->fw_handle;
197 arr[i].adh = adapter->handle;
198 arr[i++].fwh = pr->send_cq->fw_handle;
199 arr[i].adh = adapter->handle;
200 arr[i++].fwh = pr->recv_cq->fw_handle;
201 arr[i].adh = adapter->handle;
202 arr[i++].fwh = pr->eq->fw_handle;
203 arr[i].adh = adapter->handle;
204 arr[i++].fwh = pr->send_mr.handle;
205 arr[i].adh = adapter->handle;
206 arr[i++].fwh = pr->recv_mr.handle;
207 }
208 arr[i].adh = adapter->handle;
209 arr[i++].fwh = port->qp_eq->fw_handle;
210 }
211
212 arr[i].adh = adapter->handle;
213 arr[i++].fwh = adapter->neq->fw_handle;
214
215 if (adapter->mr.handle) {
216 arr[i].adh = adapter->handle;
217 arr[i++].fwh = adapter->mr.handle;
218 }
219 }
220
221out_update:
222 kfree(ehea_fw_handles.arr);
223 ehea_fw_handles.arr = arr;
224 ehea_fw_handles.num_entries = i;
225}
226
227static void ehea_update_bcmc_registrations(void)
228{
229 struct ehea_bcmc_reg_entry *arr = NULL;
230 struct ehea_adapter *adapter;
231 struct ehea_mc_list *mc_entry;
232 int num_registrations = 0;
233 int i = 0;
234 int k;
235
236 /* Determine number of registrations */
237 list_for_each_entry(adapter, &adapter_list, list)
238 for (k = 0; k < EHEA_MAX_PORTS; k++) {
239 struct ehea_port *port = adapter->port[k];
240
241 if (!port || (port->state != EHEA_PORT_UP))
242 continue;
243
244 num_registrations += 2; /* Broadcast registrations */
245
246 list_for_each_entry(mc_entry, &port->mc_list->list,list)
247 num_registrations += 2;
248 }
249
250 if (num_registrations) {
5c2cec14 251 arr = kzalloc(num_registrations * sizeof(*arr), GFP_ATOMIC);
21eee2dd
TK		 252 if (!arr)
253 return; /* Keep the existing array */
254 } else
255 goto out_update;
256
257 list_for_each_entry(adapter, &adapter_list, list) {
258 for (k = 0; k < EHEA_MAX_PORTS; k++) {
259 struct ehea_port *port = adapter->port[k];
260
261 if (!port || (port->state != EHEA_PORT_UP))
262 continue;
263
264 arr[i].adh = adapter->handle;
265 arr[i].port_id = port->logical_port_id;
266 arr[i].reg_type = EHEA_BCMC_BROADCAST |
267 EHEA_BCMC_UNTAGGED;
268 arr[i++].macaddr = port->mac_addr;
269
270 arr[i].adh = adapter->handle;
271 arr[i].port_id = port->logical_port_id;
272 arr[i].reg_type = EHEA_BCMC_BROADCAST |
273 EHEA_BCMC_VLANID_ALL;
274 arr[i++].macaddr = port->mac_addr;
275
276 list_for_each_entry(mc_entry,
277 &port->mc_list->list, list) {
278 arr[i].adh = adapter->handle;
279 arr[i].port_id = port->logical_port_id;
280 arr[i].reg_type = EHEA_BCMC_SCOPE_ALL |
281 EHEA_BCMC_MULTICAST |
282 EHEA_BCMC_UNTAGGED;
283 arr[i++].macaddr = mc_entry->macaddr;
284
285 arr[i].adh = adapter->handle;
286 arr[i].port_id = port->logical_port_id;
287 arr[i].reg_type = EHEA_BCMC_SCOPE_ALL |
288 EHEA_BCMC_MULTICAST |
289 EHEA_BCMC_VLANID_ALL;
290 arr[i++].macaddr = mc_entry->macaddr;
291 }
292 }
293 }
294
295out_update:
296 kfree(ehea_bcmc_regs.arr);
297 ehea_bcmc_regs.arr = arr;
298 ehea_bcmc_regs.num_entries = i;
299}
300
7a291083
JBT		 301static struct net_device_stats *ehea_get_stats(struct net_device *dev)
302{
303 struct ehea_port *port = netdev_priv(dev);
304 struct net_device_stats *stats = &port->stats;
305 struct hcp_ehea_port_cb2 *cb2;
7393b87c 306 u64 hret, rx_packets, tx_packets;
7a291083
JBT		 307 int i;
308
309 memset(stats, 0, sizeof(*stats));
310
3faf2693 311 cb2 = (void *)get_zeroed_page(GFP_ATOMIC);
7a291083
JBT		 312 if (!cb2) {
313 ehea_error("no mem for cb2");
314 goto out;
315 }
316
317 hret = ehea_h_query_ehea_port(port->adapter->handle,
318 port->logical_port_id,
319 H_PORT_CB2, H_PORT_CB2_ALL, cb2);
320 if (hret != H_SUCCESS) {
321 ehea_error("query_ehea_port failed");
322 goto out_herr;
323 }
324
325 if (netif_msg_hw(port))
326 ehea_dump(cb2, sizeof(*cb2), "net_device_stats");
327
328 rx_packets = 0;
329 for (i = 0; i < port->num_def_qps; i++)
330 rx_packets += port->port_res[i].rx_packets;
331
7393b87c
TK		 332 tx_packets = 0;
333 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
334 tx_packets += port->port_res[i].tx_packets;
335
336 stats->tx_packets = tx_packets;
7a291083
JBT		 337 stats->multicast = cb2->rxmcp;
338 stats->rx_errors = cb2->rxuerr;
339 stats->rx_bytes = cb2->rxo;
340 stats->tx_bytes = cb2->txo;
341 stats->rx_packets = rx_packets;
342
343out_herr:
3faf2693 344 free_page((unsigned long)cb2);
7a291083
JBT		 345out:
346 return stats;
347}
348
349static void ehea_refill_rq1(struct ehea_port_res *pr, int index, int nr_of_wqes)
350{
351 struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
352 struct net_device *dev = pr->port->netdev;
353 int max_index_mask = pr->rq1_skba.len - 1;
2c69448b
JBT		 354 int fill_wqes = pr->rq1_skba.os_skbs + nr_of_wqes;
355 int adder = 0;
7a291083
JBT		 356 int i;
357
2c69448b
JBT		 358 pr->rq1_skba.os_skbs = 0;
359
360 if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) {
44fb3126
TK		 361 if (nr_of_wqes > 0)
362 pr->rq1_skba.index = index;
2c69448b 363 pr->rq1_skba.os_skbs = fill_wqes;
7a291083 364 return;
2c69448b 365 }
7a291083 366
2c69448b 367 for (i = 0; i < fill_wqes; i++) {
7a291083
JBT		 368 if (!skb_arr_rq1[index]) {
369 skb_arr_rq1[index] = netdev_alloc_skb(dev,
370 EHEA_L_PKT_SIZE);
371 if (!skb_arr_rq1[index]) {
2c69448b 372 pr->rq1_skba.os_skbs = fill_wqes - i;
7a291083
JBT		 373 break;
374 }
375 }
376 index--;
377 index &= max_index_mask;
2c69448b 378 adder++;
7a291083 379 }
2c69448b
JBT		 380
381 if (adder == 0)
382 return;
383
7a291083 384 /* Ring doorbell */
2c69448b 385 ehea_update_rq1a(pr->qp, adder);
7a291083
JBT		 386}
387
e2878806 388static void ehea_init_fill_rq1(struct ehea_port_res *pr, int nr_rq1a)
7a291083 389{
7a291083
JBT		 390 struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
391 struct net_device *dev = pr->port->netdev;
392 int i;
393
394 for (i = 0; i < pr->rq1_skba.len; i++) {
395 skb_arr_rq1[i] = netdev_alloc_skb(dev, EHEA_L_PKT_SIZE);
e2878806
TK		 396 if (!skb_arr_rq1[i])
397 break;
7a291083
JBT		 398 }
399 /* Ring doorbell */
400 ehea_update_rq1a(pr->qp, nr_rq1a);
7a291083
JBT		 401}
402
403static int ehea_refill_rq_def(struct ehea_port_res *pr,
404 struct ehea_q_skb_arr *q_skba, int rq_nr,
405 int num_wqes, int wqe_type, int packet_size)
406{
407 struct net_device *dev = pr->port->netdev;
408 struct ehea_qp *qp = pr->qp;
409 struct sk_buff **skb_arr = q_skba->arr;
410 struct ehea_rwqe *rwqe;
411 int i, index, max_index_mask, fill_wqes;
2c69448b 412 int adder = 0;
7a291083
JBT		 413 int ret = 0;
414
415 fill_wqes = q_skba->os_skbs + num_wqes;
2c69448b 416 q_skba->os_skbs = 0;
7a291083 417
2c69448b
JBT		 418 if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) {
419 q_skba->os_skbs = fill_wqes;
7a291083 420 return ret;
2c69448b 421 }
7a291083
JBT		 422
423 index = q_skba->index;
424 max_index_mask = q_skba->len - 1;
425 for (i = 0; i < fill_wqes; i++) {
2c69448b 426 u64 tmp_addr;
7a291083
JBT		 427 struct sk_buff *skb = netdev_alloc_skb(dev, packet_size);
428 if (!skb) {
7a291083 429 q_skba->os_skbs = fill_wqes - i;
e2878806
TK		 430 if (q_skba->os_skbs == q_skba->len - 2) {
431 ehea_info("%s: rq%i ran dry - no mem for skb",
432 pr->port->netdev->name, rq_nr);
433 ret = -ENOMEM;
434 }
7a291083
JBT		 435 break;
436 }
437 skb_reserve(skb, NET_IP_ALIGN);
438
439 skb_arr[index] = skb;
2c69448b
JBT		 440 tmp_addr = ehea_map_vaddr(skb->data);
441 if (tmp_addr == -1) {
442 dev_kfree_skb(skb);
443 q_skba->os_skbs = fill_wqes - i;
444 ret = 0;
445 break;
446 }
7a291083
JBT		 447
448 rwqe = ehea_get_next_rwqe(qp, rq_nr);
449 rwqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, wqe_type)
d1d25aab 450 | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, index);
7a291083 451 rwqe->sg_list[0].l_key = pr->recv_mr.lkey;
2c69448b 452 rwqe->sg_list[0].vaddr = tmp_addr;
7a291083
JBT		 453 rwqe->sg_list[0].len = packet_size;
454 rwqe->data_segments = 1;
455
456 index++;
457 index &= max_index_mask;
2c69448b 458 adder++;
7a291083 459 }
44c82152 460
7a291083 461 q_skba->index = index;
2c69448b
JBT		 462 if (adder == 0)
463 goto out;
7a291083
JBT		 464
465 /* Ring doorbell */
466 iosync();
467 if (rq_nr == 2)
2c69448b 468 ehea_update_rq2a(pr->qp, adder);
7a291083 469 else
2c69448b 470 ehea_update_rq3a(pr->qp, adder);
44c82152 471out:
7a291083
JBT		 472 return ret;
473}
474
475
476static int ehea_refill_rq2(struct ehea_port_res *pr, int nr_of_wqes)
477{
478 return ehea_refill_rq_def(pr, &pr->rq2_skba, 2,
479 nr_of_wqes, EHEA_RWQE2_TYPE,
480 EHEA_RQ2_PKT_SIZE + NET_IP_ALIGN);
481}
482
483
484static int ehea_refill_rq3(struct ehea_port_res *pr, int nr_of_wqes)
485{
486 return ehea_refill_rq_def(pr, &pr->rq3_skba, 3,
487 nr_of_wqes, EHEA_RWQE3_TYPE,
488 EHEA_MAX_PACKET_SIZE + NET_IP_ALIGN);
489}
490
491static inline int ehea_check_cqe(struct ehea_cqe *cqe, int *rq_num)
492{
493 *rq_num = (cqe->type & EHEA_CQE_TYPE_RQ) >> 5;
494 if ((cqe->status & EHEA_CQE_STAT_ERR_MASK) == 0)
495 return 0;
496 if (((cqe->status & EHEA_CQE_STAT_ERR_TCP) != 0) &&
497 (cqe->header_length == 0))
498 return 0;
499 return -EINVAL;
500}
501
502static inline void ehea_fill_skb(struct net_device *dev,
503 struct sk_buff *skb, struct ehea_cqe *cqe)
504{
505 int length = cqe->num_bytes_transfered - 4; /*remove CRC */
506
507 skb_put(skb, length);
508 skb->ip_summed = CHECKSUM_UNNECESSARY;
509 skb->protocol = eth_type_trans(skb, dev);
510}
511
512static inline struct sk_buff *get_skb_by_index(struct sk_buff **skb_array,
513 int arr_len,
514 struct ehea_cqe *cqe)
515{
516 int skb_index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, cqe->wr_id);
517 struct sk_buff *skb;
518 void *pref;
519 int x;
520
521 x = skb_index + 1;
522 x &= (arr_len - 1);
523
524 pref = skb_array[x];
525 prefetchw(pref);
526 prefetchw(pref + EHEA_CACHE_LINE);
527
528 pref = (skb_array[x]->data);
529 prefetch(pref);
530 prefetch(pref + EHEA_CACHE_LINE);
531 prefetch(pref + EHEA_CACHE_LINE * 2);
532 prefetch(pref + EHEA_CACHE_LINE * 3);
533 skb = skb_array[skb_index];
534 skb_array[skb_index] = NULL;
535 return skb;
536}
537
538static inline struct sk_buff *get_skb_by_index_ll(struct sk_buff **skb_array,
539 int arr_len, int wqe_index)
540{
541 struct sk_buff *skb;
542 void *pref;
543 int x;
544
545 x = wqe_index + 1;
546 x &= (arr_len - 1);
547
548 pref = skb_array[x];
549 prefetchw(pref);
550 prefetchw(pref + EHEA_CACHE_LINE);
551
552 pref = (skb_array[x]->data);
553 prefetchw(pref);
554 prefetchw(pref + EHEA_CACHE_LINE);
555
556 skb = skb_array[wqe_index];
557 skb_array[wqe_index] = NULL;
558 return skb;
559}
560
561static int ehea_treat_poll_error(struct ehea_port_res *pr, int rq,
562 struct ehea_cqe *cqe, int *processed_rq2,
563 int *processed_rq3)
564{
565 struct sk_buff *skb;
566
acbddb59
JBT		 567 if (cqe->status & EHEA_CQE_STAT_ERR_TCP)
568 pr->p_stats.err_tcp_cksum++;
569 if (cqe->status & EHEA_CQE_STAT_ERR_IP)
570 pr->p_stats.err_ip_cksum++;
571 if (cqe->status & EHEA_CQE_STAT_ERR_CRC)
572 pr->p_stats.err_frame_crc++;
573
7a291083
JBT		 574 if (rq == 2) {
575 *processed_rq2 += 1;
576 skb = get_skb_by_index(pr->rq2_skba.arr, pr->rq2_skba.len, cqe);
577 dev_kfree_skb(skb);
578 } else if (rq == 3) {
579 *processed_rq3 += 1;
580 skb = get_skb_by_index(pr->rq3_skba.arr, pr->rq3_skba.len, cqe);
581 dev_kfree_skb(skb);
582 }
583
584 if (cqe->status & EHEA_CQE_STAT_FAT_ERR_MASK) {
58dd8258
TK		 585 if (netif_msg_rx_err(pr->port)) {
586 ehea_error("Critical receive error for QP %d. "
587 "Resetting port.", pr->qp->init_attr.qp_nr);
588 ehea_dump(cqe, sizeof(*cqe), "CQE");
589 }
2f69ae01 590 ehea_schedule_port_reset(pr->port);
7a291083
JBT		 591 return 1;
592 }
593
594 return 0;
595}
596
d4dc4ec9
JBT		 597static int get_skb_hdr(struct sk_buff *skb, void **iphdr,
598 void **tcph, u64 *hdr_flags, void *priv)
599{
600 struct ehea_cqe *cqe = priv;
601 unsigned int ip_len;
602 struct iphdr *iph;
603
604 /* non tcp/udp packets */
605 if (!cqe->header_length)
606 return -1;
607
608 /* non tcp packet */
609 skb_reset_network_header(skb);
610 iph = ip_hdr(skb);
611 if (iph->protocol != IPPROTO_TCP)
612 return -1;
613
614 ip_len = ip_hdrlen(skb);
615 skb_set_transport_header(skb, ip_len);
616 *tcph = tcp_hdr(skb);
617
618 /* check if ip header and tcp header are complete */
3ff2cd23 619 if (ntohs(iph->tot_len) < ip_len + tcp_hdrlen(skb))
d4dc4ec9
JBT		 620 return -1;
621
622 *hdr_flags = LRO_IPV4 | LRO_TCP;
623 *iphdr = iph;
624
625 return 0;
626}
627
628static void ehea_proc_skb(struct ehea_port_res *pr, struct ehea_cqe *cqe,
629 struct sk_buff *skb)
630{
631 int vlan_extracted = (cqe->status & EHEA_CQE_VLAN_TAG_XTRACT)
632 && pr->port->vgrp;
633
634 if (use_lro) {
635 if (vlan_extracted)
636 lro_vlan_hwaccel_receive_skb(&pr->lro_mgr, skb,
637 pr->port->vgrp,
638 cqe->vlan_tag,
639 cqe);
640 else
641 lro_receive_skb(&pr->lro_mgr, skb, cqe);
642 } else {
643 if (vlan_extracted)
644 vlan_hwaccel_receive_skb(skb, pr->port->vgrp,
645 cqe->vlan_tag);
646 else
647 netif_receive_skb(skb);
648 }
649}
650
bea3348e
SH		 651static int ehea_proc_rwqes(struct net_device *dev,
652 struct ehea_port_res *pr,
653 int budget)
7a291083 654{
18604c54 655 struct ehea_port *port = pr->port;
7a291083
JBT		 656 struct ehea_qp *qp = pr->qp;
657 struct ehea_cqe *cqe;
658 struct sk_buff *skb;
659 struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
660 struct sk_buff **skb_arr_rq2 = pr->rq2_skba.arr;
661 struct sk_buff **skb_arr_rq3 = pr->rq3_skba.arr;
662 int skb_arr_rq1_len = pr->rq1_skba.len;
663 int skb_arr_rq2_len = pr->rq2_skba.len;
664 int skb_arr_rq3_len = pr->rq3_skba.len;
665 int processed, processed_rq1, processed_rq2, processed_rq3;
bea3348e 666 int wqe_index, last_wqe_index, rq, port_reset;
7a291083
JBT		 667
668 processed = processed_rq1 = processed_rq2 = processed_rq3 = 0;
669 last_wqe_index = 0;
7a291083 670
7a291083 671 cqe = ehea_poll_rq1(qp, &wqe_index);
bea3348e 672 while ((processed < budget) && cqe) {
7a291083
JBT		 673 ehea_inc_rq1(qp);
674 processed_rq1++;
675 processed++;
7a291083
JBT		 676 if (netif_msg_rx_status(port))
677 ehea_dump(cqe, sizeof(*cqe), "CQE");
678
679 last_wqe_index = wqe_index;
680 rmb();
681 if (!ehea_check_cqe(cqe, &rq)) {
508d2b5d
DM		 682 if (rq == 1) {
683 /* LL RQ1 */
7a291083
JBT		 684 skb = get_skb_by_index_ll(skb_arr_rq1,
685 skb_arr_rq1_len,
686 wqe_index);
687 if (unlikely(!skb)) {
688 if (netif_msg_rx_err(port))
689 ehea_error("LL rq1: skb=NULL");
18604c54 690
bea3348e 691 skb = netdev_alloc_skb(dev,
7a291083
JBT		 692 EHEA_L_PKT_SIZE);
693 if (!skb)
694 break;
695 }
508d2b5d 696 skb_copy_to_linear_data(skb, ((char *)cqe) + 64,
d1d25aab 697 cqe->num_bytes_transfered - 4);
bea3348e 698 ehea_fill_skb(dev, skb, cqe);
508d2b5d
DM		 699 } else if (rq == 2) {
700 /* RQ2 */
7a291083
JBT		 701 skb = get_skb_by_index(skb_arr_rq2,
702 skb_arr_rq2_len, cqe);
703 if (unlikely(!skb)) {
704 if (netif_msg_rx_err(port))
705 ehea_error("rq2: skb=NULL");
706 break;
707 }
bea3348e 708 ehea_fill_skb(dev, skb, cqe);
7a291083 709 processed_rq2++;
508d2b5d
DM		 710 } else {
711 /* RQ3 */
7a291083
JBT		 712 skb = get_skb_by_index(skb_arr_rq3,
713 skb_arr_rq3_len, cqe);
714 if (unlikely(!skb)) {
715 if (netif_msg_rx_err(port))
716 ehea_error("rq3: skb=NULL");
717 break;
718 }
bea3348e 719 ehea_fill_skb(dev, skb, cqe);
7a291083
JBT		 720 processed_rq3++;
721 }
722
d4dc4ec9 723 ehea_proc_skb(pr, cqe, skb);
18604c54 724 } else {
acbddb59 725 pr->p_stats.poll_receive_errors++;
7a291083
JBT		 726 port_reset = ehea_treat_poll_error(pr, rq, cqe,
727 &processed_rq2,
728 &processed_rq3);
729 if (port_reset)
730 break;
731 }
732 cqe = ehea_poll_rq1(qp, &wqe_index);
733 }
d4dc4ec9
JBT		 734 if (use_lro)
735 lro_flush_all(&pr->lro_mgr);
7a291083 736
7a291083
JBT		 737 pr->rx_packets += processed;
738
739 ehea_refill_rq1(pr, last_wqe_index, processed_rq1);
740 ehea_refill_rq2(pr, processed_rq2);
741 ehea_refill_rq3(pr, processed_rq3);
742
bea3348e 743 return processed;
7a291083
JBT		 744}
745
18604c54 746static struct ehea_cqe *ehea_proc_cqes(struct ehea_port_res *pr, int my_quota)
7a291083 747{
acbddb59 748 struct sk_buff *skb;
7a291083
JBT		 749 struct ehea_cq *send_cq = pr->send_cq;
750 struct ehea_cqe *cqe;
18604c54 751 int quota = my_quota;
7a291083
JBT		 752 int cqe_counter = 0;
753 int swqe_av = 0;
acbddb59 754 int index;
7a291083
JBT		 755 unsigned long flags;
756
18604c54 757 cqe = ehea_poll_cq(send_cq);
508d2b5d 758 while (cqe && (quota > 0)) {
18604c54
JBT		 759 ehea_inc_cq(send_cq);
760
7a291083
JBT		 761 cqe_counter++;
762 rmb();
763 if (cqe->status & EHEA_CQE_STAT_ERR_MASK) {
764 ehea_error("Send Completion Error: Resetting port");
765 if (netif_msg_tx_err(pr->port))
766 ehea_dump(cqe, sizeof(*cqe), "Send CQE");
2f69ae01 767 ehea_schedule_port_reset(pr->port);
7a291083
JBT		 768 break;
769 }
770
771 if (netif_msg_tx_done(pr->port))
772 ehea_dump(cqe, sizeof(*cqe), "CQE");
773
774 if (likely(EHEA_BMASK_GET(EHEA_WR_ID_TYPE, cqe->wr_id)
acbddb59
JBT		 775 == EHEA_SWQE2_TYPE)) {
776
777 index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, cqe->wr_id);
778 skb = pr->sq_skba.arr[index];
779 dev_kfree_skb(skb);
780 pr->sq_skba.arr[index] = NULL;
781 }
7a291083
JBT		 782
783 swqe_av += EHEA_BMASK_GET(EHEA_WR_ID_REFILL, cqe->wr_id);
784 quota--;
18604c54
JBT		 785
786 cqe = ehea_poll_cq(send_cq);
787 };
7a291083
JBT		 788
789 ehea_update_feca(send_cq, cqe_counter);
790 atomic_add(swqe_av, &pr->swqe_avail);
791
792 spin_lock_irqsave(&pr->netif_queue, flags);
18604c54 793
7a291083
JBT		 794 if (pr->queue_stopped && (atomic_read(&pr->swqe_avail)
795 >= pr->swqe_refill_th)) {
796 netif_wake_queue(pr->port->netdev);
797 pr->queue_stopped = 0;
798 }
799 spin_unlock_irqrestore(&pr->netif_queue, flags);
800
18604c54 801 return cqe;
7a291083
JBT		 802}
803
18604c54 804#define EHEA_NAPI_POLL_NUM_BEFORE_IRQ 16
bea3348e 805#define EHEA_POLL_MAX_CQES 65535
18604c54 806
bea3348e 807static int ehea_poll(struct napi_struct *napi, int budget)
7a291083 808{
508d2b5d
DM		 809 struct ehea_port_res *pr = container_of(napi, struct ehea_port_res,
810 napi);
bea3348e 811 struct net_device *dev = pr->port->netdev;
18604c54
JBT		 812 struct ehea_cqe *cqe;
813 struct ehea_cqe *cqe_skb = NULL;
814 int force_irq, wqe_index;
bea3348e 815 int rx = 0;
18604c54
JBT		 816
817 force_irq = (pr->poll_counter > EHEA_NAPI_POLL_NUM_BEFORE_IRQ);
bea3348e
SH		 818 cqe_skb = ehea_proc_cqes(pr, EHEA_POLL_MAX_CQES);
819
820 if (!force_irq)
821 rx += ehea_proc_rwqes(dev, pr, budget - rx);
18604c54 822
bea3348e 823 while ((rx != budget) || force_irq) {
18604c54 824 pr->poll_counter = 0;
bea3348e 825 force_irq = 0;
288379f0 826 napi_complete(napi);
18604c54
JBT		 827 ehea_reset_cq_ep(pr->recv_cq);
828 ehea_reset_cq_ep(pr->send_cq);
829 ehea_reset_cq_n1(pr->recv_cq);
830 ehea_reset_cq_n1(pr->send_cq);
831 cqe = ehea_poll_rq1(pr->qp, &wqe_index);
832 cqe_skb = ehea_poll_cq(pr->send_cq);
833
e542aa6b 834 if (!cqe && !cqe_skb)
bea3348e 835 return rx;
18604c54 836
288379f0 837 if (!napi_reschedule(napi))
bea3348e 838 return rx;
18604c54 839
bea3348e
SH		 840 cqe_skb = ehea_proc_cqes(pr, EHEA_POLL_MAX_CQES);
841 rx += ehea_proc_rwqes(dev, pr, budget - rx);
842 }
e542aa6b 843
bea3348e
SH		 844 pr->poll_counter++;
845 return rx;
7a291083
JBT		 846}
847
8d22c971
JBT		 848#ifdef CONFIG_NET_POLL_CONTROLLER
849static void ehea_netpoll(struct net_device *dev)
850{
851 struct ehea_port *port = netdev_priv(dev);
bea3348e 852 int i;
8d22c971 853
bea3348e 854 for (i = 0; i < port->num_def_qps; i++)
288379f0 855 napi_schedule(&port->port_res[i].napi);
8d22c971
JBT		 856}
857#endif
858
7d12e780 859static irqreturn_t ehea_recv_irq_handler(int irq, void *param)
7a291083
JBT		 860{
861 struct ehea_port_res *pr = param;
18604c54 862
288379f0 863 napi_schedule(&pr->napi);
18604c54 864
7a291083
JBT		 865 return IRQ_HANDLED;
866}
867
7d12e780 868static irqreturn_t ehea_qp_aff_irq_handler(int irq, void *param)
7a291083
JBT		 869{
870 struct ehea_port *port = param;
871 struct ehea_eqe *eqe;
d2db9eea 872 struct ehea_qp *qp;
7a291083
JBT		 873 u32 qp_token;
874
875 eqe = ehea_poll_eq(port->qp_eq);
bb3a6449 876
7a291083 877 while (eqe) {
7a291083 878 qp_token = EHEA_BMASK_GET(EHEA_EQE_QP_TOKEN, eqe->entry);
a1c5a893 879 ehea_error("QP aff_err: entry=0x%llx, token=0x%x",
bb3a6449 880 eqe->entry, qp_token);
d2db9eea
JBT		 881
882 qp = port->port_res[qp_token].qp;
883 ehea_error_data(port->adapter, qp->fw_handle);
bb3a6449 884 eqe = ehea_poll_eq(port->qp_eq);
7a291083
JBT		 885 }
886
2f69ae01 887 ehea_schedule_port_reset(port);
d2db9eea 888
7a291083
JBT		 889 return IRQ_HANDLED;
890}
891
892static struct ehea_port *ehea_get_port(struct ehea_adapter *adapter,
893 int logical_port)
894{
895 int i;
896
1acf2318 897 for (i = 0; i < EHEA_MAX_PORTS; i++)
41b69c70 898 if (adapter->port[i])
d1d25aab 899 if (adapter->port[i]->logical_port_id == logical_port)
41b69c70 900 return adapter->port[i];
7a291083
JBT		 901 return NULL;
902}
903
904int ehea_sense_port_attr(struct ehea_port *port)
905{
906 int ret;
907 u64 hret;
908 struct hcp_ehea_port_cb0 *cb0;
909
508d2b5d 910 /* may be called via ehea_neq_tasklet() */
3faf2693 911 cb0 = (void *)get_zeroed_page(GFP_ATOMIC);
508d2b5d 912 if (!cb0) {
7a291083
JBT		 913 ehea_error("no mem for cb0");
914 ret = -ENOMEM;
915 goto out;
916 }
917
918 hret = ehea_h_query_ehea_port(port->adapter->handle,
919 port->logical_port_id, H_PORT_CB0,
920 EHEA_BMASK_SET(H_PORT_CB0_ALL, 0xFFFF),
921 cb0);
922 if (hret != H_SUCCESS) {
923 ret = -EIO;
924 goto out_free;
925 }
926
927 /* MAC address */
928 port->mac_addr = cb0->port_mac_addr << 16;
929
508d2b5d 930 if (!is_valid_ether_addr((u8 *)&port->mac_addr)) {
7a291083
JBT		 931 ret = -EADDRNOTAVAIL;
932 goto out_free;
933 }
934
935 /* Port speed */
936 switch (cb0->port_speed) {
937 case H_SPEED_10M_H:
938 port->port_speed = EHEA_SPEED_10M;
939 port->full_duplex = 0;
940 break;
941 case H_SPEED_10M_F:
942 port->port_speed = EHEA_SPEED_10M;
943 port->full_duplex = 1;
944 break;
945 case H_SPEED_100M_H:
946 port->port_speed = EHEA_SPEED_100M;
947 port->full_duplex = 0;
948 break;
949 case H_SPEED_100M_F:
950 port->port_speed = EHEA_SPEED_100M;
951 port->full_duplex = 1;
952 break;
953 case H_SPEED_1G_F:
954 port->port_speed = EHEA_SPEED_1G;
955 port->full_duplex = 1;
956 break;
957 case H_SPEED_10G_F:
958 port->port_speed = EHEA_SPEED_10G;
959 port->full_duplex = 1;
960 break;
961 default:
962 port->port_speed = 0;
963 port->full_duplex = 0;
964 break;
965 }
966
e919b593 967 port->autoneg = 1;
18604c54 968 port->num_mcs = cb0->num_default_qps;
e919b593 969
7a291083 970 /* Number of default QPs */
18604c54
JBT		 971 if (use_mcs)
972 port->num_def_qps = cb0->num_default_qps;
973 else
974 port->num_def_qps = 1;
7a291083
JBT		 975
976 if (!port->num_def_qps) {
977 ret = -EINVAL;
978 goto out_free;
979 }
980
18604c54
JBT		 981 port->num_tx_qps = num_tx_qps;
982
983 if (port->num_def_qps >= port->num_tx_qps)
7a291083
JBT		 984 port->num_add_tx_qps = 0;
985 else
18604c54 986 port->num_add_tx_qps = port->num_tx_qps - port->num_def_qps;
7a291083
JBT		 987
988 ret = 0;
989out_free:
990 if (ret || netif_msg_probe(port))
991 ehea_dump(cb0, sizeof(*cb0), "ehea_sense_port_attr");
3faf2693 992 free_page((unsigned long)cb0);
7a291083
JBT		 993out:
994 return ret;
995}
996
997int ehea_set_portspeed(struct ehea_port *port, u32 port_speed)
998{
999 struct hcp_ehea_port_cb4 *cb4;
1000 u64 hret;
1001 int ret = 0;
1002
3faf2693 1003 cb4 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083
JBT		 1004 if (!cb4) {
1005 ehea_error("no mem for cb4");
1006 ret = -ENOMEM;
1007 goto out;
1008 }
1009
1010 cb4->port_speed = port_speed;
1011
1012 netif_carrier_off(port->netdev);
1013
1014 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1015 port->logical_port_id,
1016 H_PORT_CB4, H_PORT_CB4_SPEED, cb4);
1017 if (hret == H_SUCCESS) {
1018 port->autoneg = port_speed == EHEA_SPEED_AUTONEG ? 1 : 0;
1019
1020 hret = ehea_h_query_ehea_port(port->adapter->handle,
1021 port->logical_port_id,
1022 H_PORT_CB4, H_PORT_CB4_SPEED,
1023 cb4);
1024 if (hret == H_SUCCESS) {
1025 switch (cb4->port_speed) {
1026 case H_SPEED_10M_H:
1027 port->port_speed = EHEA_SPEED_10M;
1028 port->full_duplex = 0;
1029 break;
1030 case H_SPEED_10M_F:
1031 port->port_speed = EHEA_SPEED_10M;
1032 port->full_duplex = 1;
1033 break;
1034 case H_SPEED_100M_H:
1035 port->port_speed = EHEA_SPEED_100M;
1036 port->full_duplex = 0;
1037 break;
1038 case H_SPEED_100M_F:
1039 port->port_speed = EHEA_SPEED_100M;
1040 port->full_duplex = 1;
1041 break;
1042 case H_SPEED_1G_F:
1043 port->port_speed = EHEA_SPEED_1G;
1044 port->full_duplex = 1;
1045 break;
1046 case H_SPEED_10G_F:
1047 port->port_speed = EHEA_SPEED_10G;
1048 port->full_duplex = 1;
1049 break;
1050 default:
1051 port->port_speed = 0;
1052 port->full_duplex = 0;
1053 break;
1054 }
1055 } else {
1056 ehea_error("Failed sensing port speed");
1057 ret = -EIO;
1058 }
1059 } else {
1060 if (hret == H_AUTHORITY) {
7674a588 1061 ehea_info("Hypervisor denied setting port speed");
7a291083
JBT		 1062 ret = -EPERM;
1063 } else {
1064 ret = -EIO;
1065 ehea_error("Failed setting port speed");
1066 }
1067 }
8759cf76
JBT		 1068 if (!prop_carrier_state || (port->phy_link == EHEA_PHY_LINK_UP))
1069 netif_carrier_on(port->netdev);
1070
3faf2693 1071 free_page((unsigned long)cb4);
7a291083
JBT		 1072out:
1073 return ret;
1074}
1075
1076static void ehea_parse_eqe(struct ehea_adapter *adapter, u64 eqe)
1077{
1078 int ret;
1079 u8 ec;
1080 u8 portnum;
1081 struct ehea_port *port;
1082
1083 ec = EHEA_BMASK_GET(NEQE_EVENT_CODE, eqe);
1084 portnum = EHEA_BMASK_GET(NEQE_PORTNUM, eqe);
1085 port = ehea_get_port(adapter, portnum);
1086
1087 switch (ec) {
1088 case EHEA_EC_PORTSTATE_CHG: /* port state change */
1089
1090 if (!port) {
1091 ehea_error("unknown portnum %x", portnum);
1092 break;
1093 }
1094
1095 if (EHEA_BMASK_GET(NEQE_PORT_UP, eqe)) {
1096 if (!netif_carrier_ok(port->netdev)) {
1e1675cc 1097 ret = ehea_sense_port_attr(port);
7a291083
JBT		 1098 if (ret) {
1099 ehea_error("failed resensing port "
1100 "attributes");
1101 break;
1102 }
1103
1104 if (netif_msg_link(port))
1105 ehea_info("%s: Logical port up: %dMbps "
1106 "%s Duplex",
1107 port->netdev->name,
1108 port->port_speed,
1109 port->full_duplex ==
1110 1 ? "Full" : "Half");
1111
1112 netif_carrier_on(port->netdev);
1113 netif_wake_queue(port->netdev);
1114 }
1115 } else
1116 if (netif_carrier_ok(port->netdev)) {
1117 if (netif_msg_link(port))
1118 ehea_info("%s: Logical port down",
1119 port->netdev->name);
1120 netif_carrier_off(port->netdev);
1121 netif_stop_queue(port->netdev);
1122 }
1123
1124 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PORT_UP, eqe)) {
8759cf76 1125 port->phy_link = EHEA_PHY_LINK_UP;
7a291083
JBT		 1126 if (netif_msg_link(port))
1127 ehea_info("%s: Physical port up",
1128 port->netdev->name);
8759cf76
JBT		 1129 if (prop_carrier_state)
1130 netif_carrier_on(port->netdev);
7a291083 1131 } else {
8759cf76 1132 port->phy_link = EHEA_PHY_LINK_DOWN;
7a291083
JBT		 1133 if (netif_msg_link(port))
1134 ehea_info("%s: Physical port down",
1135 port->netdev->name);
8759cf76
JBT		 1136 if (prop_carrier_state)
1137 netif_carrier_off(port->netdev);
7a291083
JBT		 1138 }
1139
1140 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PRIMARY, eqe))
1141 ehea_info("External switch port is primary port");
1142 else
1143 ehea_info("External switch port is backup port");
1144
1145 break;
1146 case EHEA_EC_ADAPTER_MALFUNC:
1147 ehea_error("Adapter malfunction");
1148 break;
1149 case EHEA_EC_PORT_MALFUNC:
1150 ehea_info("Port malfunction: Device: %s", port->netdev->name);
1151 netif_carrier_off(port->netdev);
1152 netif_stop_queue(port->netdev);
1153 break;
1154 default:
a1c5a893 1155 ehea_error("unknown event code %x, eqe=0x%llX", ec, eqe);
7a291083
JBT		 1156 break;
1157 }
1158}
1159
1160static void ehea_neq_tasklet(unsigned long data)
1161{
508d2b5d 1162 struct ehea_adapter *adapter = (struct ehea_adapter *)data;
7a291083
JBT		 1163 struct ehea_eqe *eqe;
1164 u64 event_mask;
1165
1166 eqe = ehea_poll_eq(adapter->neq);
1167 ehea_debug("eqe=%p", eqe);
1168
1169 while (eqe) {
1170 ehea_debug("*eqe=%lx", eqe->entry);
1171 ehea_parse_eqe(adapter, eqe->entry);
1172 eqe = ehea_poll_eq(adapter->neq);
1173 ehea_debug("next eqe=%p", eqe);
1174 }
1175
1176 event_mask = EHEA_BMASK_SET(NELR_PORTSTATE_CHG, 1)
1177 | EHEA_BMASK_SET(NELR_ADAPTER_MALFUNC, 1)
1178 | EHEA_BMASK_SET(NELR_PORT_MALFUNC, 1);
1179
1180 ehea_h_reset_events(adapter->handle,
1181 adapter->neq->fw_handle, event_mask);
1182}
1183
7d12e780 1184static irqreturn_t ehea_interrupt_neq(int irq, void *param)
7a291083
JBT		 1185{
1186 struct ehea_adapter *adapter = param;
1187 tasklet_hi_schedule(&adapter->neq_tasklet);
1188 return IRQ_HANDLED;
1189}
1190
1191
1192static int ehea_fill_port_res(struct ehea_port_res *pr)
1193{
1194 int ret;
1195 struct ehea_qp_init_attr *init_attr = &pr->qp->init_attr;
1196
e2878806
TK		 1197 ehea_init_fill_rq1(pr, init_attr->act_nr_rwqes_rq1
1198 - init_attr->act_nr_rwqes_rq2
1199 - init_attr->act_nr_rwqes_rq3 - 1);
7a291083 1200
e2878806 1201 ret = ehea_refill_rq2(pr, init_attr->act_nr_rwqes_rq2 - 1);
7a291083
JBT		 1202
1203 ret |= ehea_refill_rq3(pr, init_attr->act_nr_rwqes_rq3 - 1);
1204
1205 return ret;
1206}
1207
1208static int ehea_reg_interrupts(struct net_device *dev)
1209{
1210 struct ehea_port *port = netdev_priv(dev);
1211 struct ehea_port_res *pr;
1212 int i, ret;
1213
7a291083
JBT		 1214
1215 snprintf(port->int_aff_name, EHEA_IRQ_NAME_SIZE - 1, "%s-aff",
1216 dev->name);
1217
6b08f3ae 1218 ret = ibmebus_request_irq(port->qp_eq->attr.ist1,
7a291083 1219 ehea_qp_aff_irq_handler,
38515e90 1220 IRQF_DISABLED, port->int_aff_name, port);
7a291083
JBT		 1221 if (ret) {
1222 ehea_error("failed registering irq for qp_aff_irq_handler:"
1223 "ist=%X", port->qp_eq->attr.ist1);
1224 goto out_free_qpeq;
1225 }
1226
1227 if (netif_msg_ifup(port))
1228 ehea_info("irq_handle 0x%X for function qp_aff_irq_handler "
1229 "registered", port->qp_eq->attr.ist1);
1230
18604c54 1231
7a291083
JBT		 1232 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
1233 pr = &port->port_res[i];
1234 snprintf(pr->int_send_name, EHEA_IRQ_NAME_SIZE - 1,
18604c54 1235 "%s-queue%d", dev->name, i);
6b08f3ae 1236 ret = ibmebus_request_irq(pr->eq->attr.ist1,
18604c54 1237 ehea_recv_irq_handler,
38515e90 1238 IRQF_DISABLED, pr->int_send_name,
7a291083
JBT		 1239 pr);
1240 if (ret) {
18604c54 1241 ehea_error("failed registering irq for ehea_queue "
7a291083 1242 "port_res_nr:%d, ist=%X", i,
18604c54 1243 pr->eq->attr.ist1);
7a291083
JBT		 1244 goto out_free_req;
1245 }
1246 if (netif_msg_ifup(port))
18604c54
JBT		 1247 ehea_info("irq_handle 0x%X for function ehea_queue_int "
1248 "%d registered", pr->eq->attr.ist1, i);
7a291083
JBT		 1249 }
1250out:
1251 return ret;
1252
18604c54 1253
7a291083
JBT		 1254out_free_req:
1255 while (--i >= 0) {
18604c54 1256 u32 ist = port->port_res[i].eq->attr.ist1;
6b08f3ae 1257 ibmebus_free_irq(ist, &port->port_res[i]);
7a291083 1258 }
18604c54 1259
7a291083 1260out_free_qpeq:
6b08f3ae 1261 ibmebus_free_irq(port->qp_eq->attr.ist1, port);
7a291083 1262 i = port->num_def_qps;
18604c54 1263
7a291083 1264 goto out;
18604c54 1265
7a291083
JBT		 1266}
1267
1268static void ehea_free_interrupts(struct net_device *dev)
1269{
1270 struct ehea_port *port = netdev_priv(dev);
1271 struct ehea_port_res *pr;
1272 int i;
1273
1274 /* send */
18604c54 1275
7a291083
JBT		 1276 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
1277 pr = &port->port_res[i];
6b08f3ae 1278 ibmebus_free_irq(pr->eq->attr.ist1, pr);
7a291083
JBT		 1279 if (netif_msg_intr(port))
1280 ehea_info("free send irq for res %d with handle 0x%X",
18604c54 1281 i, pr->eq->attr.ist1);
7a291083
JBT		 1282 }
1283
1284 /* associated events */
6b08f3ae 1285 ibmebus_free_irq(port->qp_eq->attr.ist1, port);
7a291083
JBT		 1286 if (netif_msg_intr(port))
1287 ehea_info("associated event interrupt for handle 0x%X freed",
1288 port->qp_eq->attr.ist1);
1289}
1290
1291static int ehea_configure_port(struct ehea_port *port)
1292{
1293 int ret, i;
1294 u64 hret, mask;
1295 struct hcp_ehea_port_cb0 *cb0;
1296
1297 ret = -ENOMEM;
3faf2693 1298 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083
JBT		 1299 if (!cb0)
1300 goto out;
1301
1302 cb0->port_rc = EHEA_BMASK_SET(PXLY_RC_VALID, 1)
1303 | EHEA_BMASK_SET(PXLY_RC_IP_CHKSUM, 1)
1304 | EHEA_BMASK_SET(PXLY_RC_TCP_UDP_CHKSUM, 1)
1305 | EHEA_BMASK_SET(PXLY_RC_VLAN_XTRACT, 1)
1306 | EHEA_BMASK_SET(PXLY_RC_VLAN_TAG_FILTER,
1307 PXLY_RC_VLAN_FILTER)
1308 | EHEA_BMASK_SET(PXLY_RC_JUMBO_FRAME, 1);
1309
18604c54
JBT		 1310 for (i = 0; i < port->num_mcs; i++)
1311 if (use_mcs)
1312 cb0->default_qpn_arr[i] =
1313 port->port_res[i].qp->init_attr.qp_nr;
1314 else
1315 cb0->default_qpn_arr[i] =
1316 port->port_res[0].qp->init_attr.qp_nr;
e542aa6b 1317
7a291083
JBT		 1318 if (netif_msg_ifup(port))
1319 ehea_dump(cb0, sizeof(*cb0), "ehea_configure_port");
1320
1321 mask = EHEA_BMASK_SET(H_PORT_CB0_PRC, 1)
1322 | EHEA_BMASK_SET(H_PORT_CB0_DEFQPNARRAY, 1);
1323
1324 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1325 port->logical_port_id,
1326 H_PORT_CB0, mask, cb0);
1327 ret = -EIO;
1328 if (hret != H_SUCCESS)
1329 goto out_free;
1330
1331 ret = 0;
1332
1333out_free:
3faf2693 1334 free_page((unsigned long)cb0);
7a291083
JBT		 1335out:
1336 return ret;
1337}
1338
e542aa6b 1339int ehea_gen_smrs(struct ehea_port_res *pr)
7a291083 1340{
e542aa6b 1341 int ret;
7a291083
JBT		 1342 struct ehea_adapter *adapter = pr->port->adapter;
1343
e542aa6b
JBT		 1344 ret = ehea_gen_smr(adapter, &adapter->mr, &pr->send_mr);
1345 if (ret)
7a291083
JBT		 1346 goto out;
1347
e542aa6b
JBT		 1348 ret = ehea_gen_smr(adapter, &adapter->mr, &pr->recv_mr);
1349 if (ret)
1350 goto out_free;
7a291083
JBT		 1351
1352 return 0;
1353
e542aa6b
JBT		 1354out_free:
1355 ehea_rem_mr(&pr->send_mr);
7a291083 1356out:
e542aa6b 1357 ehea_error("Generating SMRS failed\n");
7a291083
JBT		 1358 return -EIO;
1359}
1360
e542aa6b 1361int ehea_rem_smrs(struct ehea_port_res *pr)
7a291083 1362{
e542aa6b
JBT		 1363 if ((ehea_rem_mr(&pr->send_mr))
1364 || (ehea_rem_mr(&pr->recv_mr)))
1365 return -EIO;
1366 else
1367 return 0;
7a291083
JBT		 1368}
1369
1370static int ehea_init_q_skba(struct ehea_q_skb_arr *q_skba, int max_q_entries)
1371{
508d2b5d 1372 int arr_size = sizeof(void *) * max_q_entries;
7a291083
JBT		 1373
1374 q_skba->arr = vmalloc(arr_size);
1375 if (!q_skba->arr)
1376 return -ENOMEM;
1377
1378 memset(q_skba->arr, 0, arr_size);
1379
1380 q_skba->len = max_q_entries;
1381 q_skba->index = 0;
1382 q_skba->os_skbs = 0;
1383
1384 return 0;
1385}
1386
1387static int ehea_init_port_res(struct ehea_port *port, struct ehea_port_res *pr,
1388 struct port_res_cfg *pr_cfg, int queue_token)
1389{
1390 struct ehea_adapter *adapter = port->adapter;
1391 enum ehea_eq_type eq_type = EHEA_EQ;
1392 struct ehea_qp_init_attr *init_attr = NULL;
1393 int ret = -EIO;
1394
1395 memset(pr, 0, sizeof(struct ehea_port_res));
1396
1397 pr->port = port;
7a291083
JBT		 1398 spin_lock_init(&pr->xmit_lock);
1399 spin_lock_init(&pr->netif_queue);
1400
18604c54
JBT		 1401 pr->eq = ehea_create_eq(adapter, eq_type, EHEA_MAX_ENTRIES_EQ, 0);
1402 if (!pr->eq) {
1403 ehea_error("create_eq failed (eq)");
7a291083
JBT		 1404 goto out_free;
1405 }
1406
1407 pr->recv_cq = ehea_create_cq(adapter, pr_cfg->max_entries_rcq,
18604c54 1408 pr->eq->fw_handle,
7a291083
JBT		 1409 port->logical_port_id);
1410 if (!pr->recv_cq) {
1411 ehea_error("create_cq failed (cq_recv)");
1412 goto out_free;
1413 }
1414
1415 pr->send_cq = ehea_create_cq(adapter, pr_cfg->max_entries_scq,
18604c54 1416 pr->eq->fw_handle,
7a291083
JBT		 1417 port->logical_port_id);
1418 if (!pr->send_cq) {
1419 ehea_error("create_cq failed (cq_send)");
1420 goto out_free;
1421 }
1422
1423 if (netif_msg_ifup(port))
1424 ehea_info("Send CQ: act_nr_cqes=%d, Recv CQ: act_nr_cqes=%d",
1425 pr->send_cq->attr.act_nr_of_cqes,
1426 pr->recv_cq->attr.act_nr_of_cqes);
1427
1428 init_attr = kzalloc(sizeof(*init_attr), GFP_KERNEL);
1429 if (!init_attr) {
1430 ret = -ENOMEM;
1431 ehea_error("no mem for ehea_qp_init_attr");
1432 goto out_free;
1433 }
1434
1435 init_attr->low_lat_rq1 = 1;
1436 init_attr->signalingtype = 1; /* generate CQE if specified in WQE */
1437 init_attr->rq_count = 3;
1438 init_attr->qp_token = queue_token;
1439 init_attr->max_nr_send_wqes = pr_cfg->max_entries_sq;
1440 init_attr->max_nr_rwqes_rq1 = pr_cfg->max_entries_rq1;
1441 init_attr->max_nr_rwqes_rq2 = pr_cfg->max_entries_rq2;
1442 init_attr->max_nr_rwqes_rq3 = pr_cfg->max_entries_rq3;
1443 init_attr->wqe_size_enc_sq = EHEA_SG_SQ;
1444 init_attr->wqe_size_enc_rq1 = EHEA_SG_RQ1;
1445 init_attr->wqe_size_enc_rq2 = EHEA_SG_RQ2;
1446 init_attr->wqe_size_enc_rq3 = EHEA_SG_RQ3;
1447 init_attr->rq2_threshold = EHEA_RQ2_THRESHOLD;
1448 init_attr->rq3_threshold = EHEA_RQ3_THRESHOLD;
1449 init_attr->port_nr = port->logical_port_id;
1450 init_attr->send_cq_handle = pr->send_cq->fw_handle;
1451 init_attr->recv_cq_handle = pr->recv_cq->fw_handle;
1452 init_attr->aff_eq_handle = port->qp_eq->fw_handle;
1453
1454 pr->qp = ehea_create_qp(adapter, adapter->pd, init_attr);
1455 if (!pr->qp) {
1456 ehea_error("create_qp failed");
1457 ret = -EIO;
1458 goto out_free;
1459 }
1460
1461 if (netif_msg_ifup(port))
1462 ehea_info("QP: qp_nr=%d\n act_nr_snd_wqe=%d\n nr_rwqe_rq1=%d\n "
1463 "nr_rwqe_rq2=%d\n nr_rwqe_rq3=%d", init_attr->qp_nr,
1464 init_attr->act_nr_send_wqes,
1465 init_attr->act_nr_rwqes_rq1,
1466 init_attr->act_nr_rwqes_rq2,
1467 init_attr->act_nr_rwqes_rq3);
1468
44fb3126
TK		 1469 pr->sq_skba_size = init_attr->act_nr_send_wqes + 1;
1470
1471 ret = ehea_init_q_skba(&pr->sq_skba, pr->sq_skba_size);
7a291083
JBT		 1472 ret |= ehea_init_q_skba(&pr->rq1_skba, init_attr->act_nr_rwqes_rq1 + 1);
1473 ret |= ehea_init_q_skba(&pr->rq2_skba, init_attr->act_nr_rwqes_rq2 + 1);
1474 ret |= ehea_init_q_skba(&pr->rq3_skba, init_attr->act_nr_rwqes_rq3 + 1);
1475 if (ret)
1476 goto out_free;
1477
1478 pr->swqe_refill_th = init_attr->act_nr_send_wqes / 10;
1479 if (ehea_gen_smrs(pr) != 0) {
1480 ret = -EIO;
1481 goto out_free;
1482 }
18604c54 1483
7a291083
JBT		 1484 atomic_set(&pr->swqe_avail, init_attr->act_nr_send_wqes - 1);
1485
1486 kfree(init_attr);
18604c54 1487
bea3348e 1488 netif_napi_add(pr->port->netdev, &pr->napi, ehea_poll, 64);
18604c54 1489
d4dc4ec9
JBT		 1490 pr->lro_mgr.max_aggr = pr->port->lro_max_aggr;
1491 pr->lro_mgr.max_desc = MAX_LRO_DESCRIPTORS;
1492 pr->lro_mgr.lro_arr = pr->lro_desc;
1493 pr->lro_mgr.get_skb_header = get_skb_hdr;
1494 pr->lro_mgr.features = LRO_F_NAPI | LRO_F_EXTRACT_VLAN_ID;
1495 pr->lro_mgr.dev = port->netdev;
1496 pr->lro_mgr.ip_summed = CHECKSUM_UNNECESSARY;
1497 pr->lro_mgr.ip_summed_aggr = CHECKSUM_UNNECESSARY;
1498
7a291083
JBT		 1499 ret = 0;
1500 goto out;
1501
1502out_free:
1503 kfree(init_attr);
1504 vfree(pr->sq_skba.arr);
1505 vfree(pr->rq1_skba.arr);
1506 vfree(pr->rq2_skba.arr);
1507 vfree(pr->rq3_skba.arr);
1508 ehea_destroy_qp(pr->qp);
1509 ehea_destroy_cq(pr->send_cq);
1510 ehea_destroy_cq(pr->recv_cq);
18604c54 1511 ehea_destroy_eq(pr->eq);
7a291083
JBT		 1512out:
1513 return ret;
1514}
1515
1516static int ehea_clean_portres(struct ehea_port *port, struct ehea_port_res *pr)
1517{
1518 int ret, i;
1519
1520 ret = ehea_destroy_qp(pr->qp);
1521
1522 if (!ret) {
1523 ehea_destroy_cq(pr->send_cq);
1524 ehea_destroy_cq(pr->recv_cq);
18604c54 1525 ehea_destroy_eq(pr->eq);
7a291083
JBT		 1526
1527 for (i = 0; i < pr->rq1_skba.len; i++)
1528 if (pr->rq1_skba.arr[i])
1529 dev_kfree_skb(pr->rq1_skba.arr[i]);
1530
1531 for (i = 0; i < pr->rq2_skba.len; i++)
1532 if (pr->rq2_skba.arr[i])
1533 dev_kfree_skb(pr->rq2_skba.arr[i]);
1534
1535 for (i = 0; i < pr->rq3_skba.len; i++)
1536 if (pr->rq3_skba.arr[i])
1537 dev_kfree_skb(pr->rq3_skba.arr[i]);
1538
1539 for (i = 0; i < pr->sq_skba.len; i++)
1540 if (pr->sq_skba.arr[i])
1541 dev_kfree_skb(pr->sq_skba.arr[i]);
1542
1543 vfree(pr->rq1_skba.arr);
1544 vfree(pr->rq2_skba.arr);
1545 vfree(pr->rq3_skba.arr);
1546 vfree(pr->sq_skba.arr);
1547 ret = ehea_rem_smrs(pr);
1548 }
1549 return ret;
1550}
1551
1552/*
1553 * The write_* functions store information in swqe which is used by
1554 * the hardware to calculate the ip/tcp/udp checksum
1555 */
1556
1557static inline void write_ip_start_end(struct ehea_swqe *swqe,
1558 const struct sk_buff *skb)
1559{
eddc9ec5 1560 swqe->ip_start = skb_network_offset(skb);
c9bdd4b5 1561 swqe->ip_end = (u8)(swqe->ip_start + ip_hdrlen(skb) - 1);
7a291083
JBT		 1562}
1563
1564static inline void write_tcp_offset_end(struct ehea_swqe *swqe,
1565 const struct sk_buff *skb)
1566{
1567 swqe->tcp_offset =
1568 (u8)(swqe->ip_end + 1 + offsetof(struct tcphdr, check));
1569
1570 swqe->tcp_end = (u16)skb->len - 1;
1571}
1572
1573static inline void write_udp_offset_end(struct ehea_swqe *swqe,
1574 const struct sk_buff *skb)
1575{
1576 swqe->tcp_offset =
1577 (u8)(swqe->ip_end + 1 + offsetof(struct udphdr, check));
1578
1579 swqe->tcp_end = (u16)skb->len - 1;
1580}
1581
1582
1583static void write_swqe2_TSO(struct sk_buff *skb,
1584 struct ehea_swqe *swqe, u32 lkey)
1585{
1586 struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry;
1587 u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0];
1588 int skb_data_size = skb->len - skb->data_len;
1589 int headersize;
7a291083
JBT		 1590
1591 /* Packet is TCP with TSO enabled */
1592 swqe->tx_control |= EHEA_SWQE_TSO;
1593 swqe->mss = skb_shinfo(skb)->gso_size;
1594 /* copy only eth/ip/tcp headers to immediate data and
1595 * the rest of skb->data to sg1entry
1596 */
ab6a5bb6 1597 headersize = ETH_HLEN + ip_hdrlen(skb) + tcp_hdrlen(skb);
7a291083
JBT		 1598
1599 skb_data_size = skb->len - skb->data_len;
1600
1601 if (skb_data_size >= headersize) {
1602 /* copy immediate data */
d626f62b 1603 skb_copy_from_linear_data(skb, imm_data, headersize);
7a291083
JBT		 1604 swqe->immediate_data_length = headersize;
1605
1606 if (skb_data_size > headersize) {
1607 /* set sg1entry data */
1608 sg1entry->l_key = lkey;
1609 sg1entry->len = skb_data_size - headersize;
44a5b3d5
TK		 1610 sg1entry->vaddr =
1611 ehea_map_vaddr(skb->data + headersize);
7a291083
JBT		 1612 swqe->descriptors++;
1613 }
1614 } else
1615 ehea_error("cannot handle fragmented headers");
1616}
1617
1618static void write_swqe2_nonTSO(struct sk_buff *skb,
1619 struct ehea_swqe *swqe, u32 lkey)
1620{
1621 int skb_data_size = skb->len - skb->data_len;
1622 u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0];
1623 struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry;
7a291083
JBT		 1624
1625 /* Packet is any nonTSO type
1626 *
1627 * Copy as much as possible skb->data to immediate data and
1628 * the rest to sg1entry
1629 */
1630 if (skb_data_size >= SWQE2_MAX_IMM) {
1631 /* copy immediate data */
d626f62b 1632 skb_copy_from_linear_data(skb, imm_data, SWQE2_MAX_IMM);
7a291083
JBT		 1633
1634 swqe->immediate_data_length = SWQE2_MAX_IMM;
1635
1636 if (skb_data_size > SWQE2_MAX_IMM) {
1637 /* copy sg1entry data */
1638 sg1entry->l_key = lkey;
1639 sg1entry->len = skb_data_size - SWQE2_MAX_IMM;
44a5b3d5
TK		 1640 sg1entry->vaddr =
1641 ehea_map_vaddr(skb->data + SWQE2_MAX_IMM);
7a291083
JBT		 1642 swqe->descriptors++;
1643 }
1644 } else {
d626f62b 1645 skb_copy_from_linear_data(skb, imm_data, skb_data_size);
7a291083
JBT		 1646 swqe->immediate_data_length = skb_data_size;
1647 }
1648}
1649
1650static inline void write_swqe2_data(struct sk_buff *skb, struct net_device *dev,
1651 struct ehea_swqe *swqe, u32 lkey)
1652{
1653 struct ehea_vsgentry *sg_list, *sg1entry, *sgentry;
1654 skb_frag_t *frag;
1655 int nfrags, sg1entry_contains_frag_data, i;
7a291083
JBT		 1656
1657 nfrags = skb_shinfo(skb)->nr_frags;
1658 sg1entry = &swqe->u.immdata_desc.sg_entry;
508d2b5d 1659 sg_list = (struct ehea_vsgentry *)&swqe->u.immdata_desc.sg_list;
7a291083
JBT		 1660 swqe->descriptors = 0;
1661 sg1entry_contains_frag_data = 0;
1662
1663 if ((dev->features & NETIF_F_TSO) && skb_shinfo(skb)->gso_size)
1664 write_swqe2_TSO(skb, swqe, lkey);
1665 else
1666 write_swqe2_nonTSO(skb, swqe, lkey);
1667
1668 /* write descriptors */
1669 if (nfrags > 0) {
1670 if (swqe->descriptors == 0) {
1671 /* sg1entry not yet used */
1672 frag = &skb_shinfo(skb)->frags[0];
1673
1674 /* copy sg1entry data */
1675 sg1entry->l_key = lkey;
1676 sg1entry->len = frag->size;
44a5b3d5
TK		 1677 sg1entry->vaddr =
1678 ehea_map_vaddr(page_address(frag->page)
1679 + frag->page_offset);
7a291083
JBT		 1680 swqe->descriptors++;
1681 sg1entry_contains_frag_data = 1;
1682 }
1683
1684 for (i = sg1entry_contains_frag_data; i < nfrags; i++) {
1685
1686 frag = &skb_shinfo(skb)->frags[i];
1687 sgentry = &sg_list[i - sg1entry_contains_frag_data];
1688
1689 sgentry->l_key = lkey;
1690 sgentry->len = frag->size;
44a5b3d5
TK		 1691 sgentry->vaddr =
1692 ehea_map_vaddr(page_address(frag->page)
1693 + frag->page_offset);
7a291083
JBT		 1694 swqe->descriptors++;
1695 }
1696 }
1697}
1698
1699static int ehea_broadcast_reg_helper(struct ehea_port *port, u32 hcallid)
1700{
1701 int ret = 0;
1702 u64 hret;
1703 u8 reg_type;
1704
1705 /* De/Register untagged packets */
1706 reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_UNTAGGED;
1707 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1708 port->logical_port_id,
1709 reg_type, port->mac_addr, 0, hcallid);
1710 if (hret != H_SUCCESS) {
f9e29228 1711 ehea_error("%sregistering bc address failed (tagged)",
508d2b5d 1712 hcallid == H_REG_BCMC ? "" : "de");
7a291083
JBT		 1713 ret = -EIO;
1714 goto out_herr;
1715 }
1716
1717 /* De/Register VLAN packets */
1718 reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_VLANID_ALL;
1719 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1720 port->logical_port_id,
1721 reg_type, port->mac_addr, 0, hcallid);
1722 if (hret != H_SUCCESS) {
f9e29228
TK		 1723 ehea_error("%sregistering bc address failed (vlan)",
1724 hcallid == H_REG_BCMC ? "" : "de");
7a291083
JBT		 1725 ret = -EIO;
1726 }
1727out_herr:
1728 return ret;
1729}
1730
1731static int ehea_set_mac_addr(struct net_device *dev, void *sa)
1732{
1733 struct ehea_port *port = netdev_priv(dev);
1734 struct sockaddr *mac_addr = sa;
1735 struct hcp_ehea_port_cb0 *cb0;
1736 int ret;
1737 u64 hret;
1738
1739 if (!is_valid_ether_addr(mac_addr->sa_data)) {
1740 ret = -EADDRNOTAVAIL;
1741 goto out;
1742 }
1743
3faf2693 1744 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083
JBT		 1745 if (!cb0) {
1746 ehea_error("no mem for cb0");
1747 ret = -ENOMEM;
1748 goto out;
1749 }
1750
1751 memcpy(&(cb0->port_mac_addr), &(mac_addr->sa_data[0]), ETH_ALEN);
1752
1753 cb0->port_mac_addr = cb0->port_mac_addr >> 16;
1754
1755 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1756 port->logical_port_id, H_PORT_CB0,
1757 EHEA_BMASK_SET(H_PORT_CB0_MAC, 1), cb0);
1758 if (hret != H_SUCCESS) {
1759 ret = -EIO;
1760 goto out_free;
1761 }
1762
1763 memcpy(dev->dev_addr, mac_addr->sa_data, dev->addr_len);
1764
5c2cec14 1765 spin_lock(&ehea_bcmc_regs.lock);
21eee2dd 1766
7a291083 1767 /* Deregister old MAC in pHYP */
00aaea2f
JBT		 1768 if (port->state == EHEA_PORT_UP) {
1769 ret = ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
1770 if (ret)
1771 goto out_upregs;
1772 }
7a291083
JBT		 1773
1774 port->mac_addr = cb0->port_mac_addr << 16;
1775
1776 /* Register new MAC in pHYP */
00aaea2f
JBT		 1777 if (port->state == EHEA_PORT_UP) {
1778 ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
1779 if (ret)
1780 goto out_upregs;
1781 }
7a291083
JBT		 1782
1783 ret = 0;
21eee2dd
TK		 1784
1785out_upregs:
1786 ehea_update_bcmc_registrations();
5c2cec14 1787 spin_unlock(&ehea_bcmc_regs.lock);
7a291083 1788out_free:
3faf2693 1789 free_page((unsigned long)cb0);
7a291083
JBT		 1790out:
1791 return ret;
1792}
1793
1794static void ehea_promiscuous_error(u64 hret, int enable)
1795{
7674a588
TK		 1796 if (hret == H_AUTHORITY)
1797 ehea_info("Hypervisor denied %sabling promiscuous mode",
1798 enable == 1 ? "en" : "dis");
1799 else
1800 ehea_error("failed %sabling promiscuous mode",
1801 enable == 1 ? "en" : "dis");
7a291083
JBT		 1802}
1803
1804static void ehea_promiscuous(struct net_device *dev, int enable)
1805{
1806 struct ehea_port *port = netdev_priv(dev);
1807 struct hcp_ehea_port_cb7 *cb7;
1808 u64 hret;
1809
1810 if ((enable && port->promisc) || (!enable && !port->promisc))
1811 return;
1812
3faf2693 1813 cb7 = (void *)get_zeroed_page(GFP_ATOMIC);
7a291083
JBT		 1814 if (!cb7) {
1815 ehea_error("no mem for cb7");
1816 goto out;
1817 }
1818
1819 /* Modify Pxs_DUCQPN in CB7 */
1820 cb7->def_uc_qpn = enable == 1 ? port->port_res[0].qp->fw_handle : 0;
1821
1822 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1823 port->logical_port_id,
1824 H_PORT_CB7, H_PORT_CB7_DUCQPN, cb7);
1825 if (hret) {
1826 ehea_promiscuous_error(hret, enable);
1827 goto out;
1828 }
1829
1830 port->promisc = enable;
1831out:
3faf2693 1832 free_page((unsigned long)cb7);
7a291083
JBT		 1833 return;
1834}
1835
1836static u64 ehea_multicast_reg_helper(struct ehea_port *port, u64 mc_mac_addr,
1837 u32 hcallid)
1838{
1839 u64 hret;
1840 u8 reg_type;
1841
1842 reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST
1843 | EHEA_BCMC_UNTAGGED;
1844
1845 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1846 port->logical_port_id,
1847 reg_type, mc_mac_addr, 0, hcallid);
1848 if (hret)
1849 goto out;
1850
1851 reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST
1852 | EHEA_BCMC_VLANID_ALL;
1853
1854 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1855 port->logical_port_id,
1856 reg_type, mc_mac_addr, 0, hcallid);
1857out:
1858 return hret;
1859}
1860
1861static int ehea_drop_multicast_list(struct net_device *dev)
1862{
1863 struct ehea_port *port = netdev_priv(dev);
1864 struct ehea_mc_list *mc_entry = port->mc_list;
1865 struct list_head *pos;
1866 struct list_head *temp;
1867 int ret = 0;
1868 u64 hret;
1869
1870 list_for_each_safe(pos, temp, &(port->mc_list->list)) {
1871 mc_entry = list_entry(pos, struct ehea_mc_list, list);
1872
1873 hret = ehea_multicast_reg_helper(port, mc_entry->macaddr,
1874 H_DEREG_BCMC);
1875 if (hret) {
1876 ehea_error("failed deregistering mcast MAC");
1877 ret = -EIO;
1878 }
1879
1880 list_del(pos);
1881 kfree(mc_entry);
1882 }
1883 return ret;
1884}
1885
1886static void ehea_allmulti(struct net_device *dev, int enable)
1887{
1888 struct ehea_port *port = netdev_priv(dev);
1889 u64 hret;
1890
1891 if (!port->allmulti) {
1892 if (enable) {
1893 /* Enable ALLMULTI */
1894 ehea_drop_multicast_list(dev);
1895 hret = ehea_multicast_reg_helper(port, 0, H_REG_BCMC);
1896 if (!hret)
1897 port->allmulti = 1;
1898 else
1899 ehea_error("failed enabling IFF_ALLMULTI");
1900 }
1901 } else
1902 if (!enable) {
1903 /* Disable ALLMULTI */
1904 hret = ehea_multicast_reg_helper(port, 0, H_DEREG_BCMC);
1905 if (!hret)
1906 port->allmulti = 0;
1907 else
1908 ehea_error("failed disabling IFF_ALLMULTI");
1909 }
1910}
1911
508d2b5d 1912static void ehea_add_multicast_entry(struct ehea_port *port, u8 *mc_mac_addr)
7a291083
JBT		 1913{
1914 struct ehea_mc_list *ehea_mcl_entry;
1915 u64 hret;
1916
1e1675cc 1917 ehea_mcl_entry = kzalloc(sizeof(*ehea_mcl_entry), GFP_ATOMIC);
7a291083
JBT		 1918 if (!ehea_mcl_entry) {
1919 ehea_error("no mem for mcl_entry");
1920 return;
1921 }
1922
1923 INIT_LIST_HEAD(&ehea_mcl_entry->list);
1924
1925 memcpy(&ehea_mcl_entry->macaddr, mc_mac_addr, ETH_ALEN);
1926
1927 hret = ehea_multicast_reg_helper(port, ehea_mcl_entry->macaddr,
1928 H_REG_BCMC);
1929 if (!hret)
1930 list_add(&ehea_mcl_entry->list, &port->mc_list->list);
1931 else {
1932 ehea_error("failed registering mcast MAC");
1933 kfree(ehea_mcl_entry);
1934 }
1935}
1936
1937static void ehea_set_multicast_list(struct net_device *dev)
1938{
1939 struct ehea_port *port = netdev_priv(dev);
1940 struct dev_mc_list *k_mcl_entry;
1941 int ret, i;
1942
1943 if (dev->flags & IFF_PROMISC) {
1944 ehea_promiscuous(dev, 1);
1945 return;
1946 }
1947 ehea_promiscuous(dev, 0);
1948
5c2cec14 1949 spin_lock(&ehea_bcmc_regs.lock);
21eee2dd 1950
7a291083
JBT		 1951 if (dev->flags & IFF_ALLMULTI) {
1952 ehea_allmulti(dev, 1);
21eee2dd 1953 goto out;
7a291083
JBT		 1954 }
1955 ehea_allmulti(dev, 0);
1956
1957 if (dev->mc_count) {
1958 ret = ehea_drop_multicast_list(dev);
1959 if (ret) {
1960 /* Dropping the current multicast list failed.
1961 * Enabling ALL_MULTI is the best we can do.
1962 */
1963 ehea_allmulti(dev, 1);
1964 }
1965
1966 if (dev->mc_count > port->adapter->max_mc_mac) {
a1c5a893 1967 ehea_info("Mcast registration limit reached (0x%llx). "
7a291083
JBT		 1968 "Use ALLMULTI!",
1969 port->adapter->max_mc_mac);
1970 goto out;
1971 }
1972
508d2b5d
DM		 1973 for (i = 0, k_mcl_entry = dev->mc_list; i < dev->mc_count; i++,
1974 k_mcl_entry = k_mcl_entry->next)
7a291083 1975 ehea_add_multicast_entry(port, k_mcl_entry->dmi_addr);
508d2b5d 1976
7a291083
JBT		 1977 }
1978out:
21eee2dd 1979 ehea_update_bcmc_registrations();
5c2cec14 1980 spin_unlock(&ehea_bcmc_regs.lock);
7a291083
JBT		 1981 return;
1982}
1983
1984static int ehea_change_mtu(struct net_device *dev, int new_mtu)
1985{
1986 if ((new_mtu < 68) || (new_mtu > EHEA_MAX_PACKET_SIZE))
1987 return -EINVAL;
1988 dev->mtu = new_mtu;
1989 return 0;
1990}
1991
1992static void ehea_xmit2(struct sk_buff *skb, struct net_device *dev,
1993 struct ehea_swqe *swqe, u32 lkey)
1994{
1995 if (skb->protocol == htons(ETH_P_IP)) {
eddc9ec5 1996 const struct iphdr *iph = ip_hdr(skb);
d1d25aab 1997
7a291083
JBT		 1998 /* IPv4 */
1999 swqe->tx_control |= EHEA_SWQE_CRC
2000 | EHEA_SWQE_IP_CHECKSUM
2001 | EHEA_SWQE_TCP_CHECKSUM
2002 | EHEA_SWQE_IMM_DATA_PRESENT
2003 | EHEA_SWQE_DESCRIPTORS_PRESENT;
2004
2005 write_ip_start_end(swqe, skb);
2006
eddc9ec5 2007 if (iph->protocol == IPPROTO_UDP) {
d1d25aab
JBT		 2008 if ((iph->frag_off & IP_MF)
2009 || (iph->frag_off & IP_OFFSET))
7a291083
JBT		 2010 /* IP fragment, so don't change cs */
2011 swqe->tx_control &= ~EHEA_SWQE_TCP_CHECKSUM;
2012 else
2013 write_udp_offset_end(swqe, skb);
eddc9ec5 2014 } else if (iph->protocol == IPPROTO_TCP) {
7a291083
JBT		 2015 write_tcp_offset_end(swqe, skb);
2016 }
2017
2018 /* icmp (big data) and ip segmentation packets (all other ip
2019 packets) do not require any special handling */
2020
2021 } else {
2022 /* Other Ethernet Protocol */
2023 swqe->tx_control |= EHEA_SWQE_CRC
2024 | EHEA_SWQE_IMM_DATA_PRESENT
2025 | EHEA_SWQE_DESCRIPTORS_PRESENT;
2026 }
2027
2028 write_swqe2_data(skb, dev, swqe, lkey);
2029}
2030
2031static void ehea_xmit3(struct sk_buff *skb, struct net_device *dev,
2032 struct ehea_swqe *swqe)
2033{
2034 int nfrags = skb_shinfo(skb)->nr_frags;
2035 u8 *imm_data = &swqe->u.immdata_nodesc.immediate_data[0];
2036 skb_frag_t *frag;
2037 int i;
2038
2039 if (skb->protocol == htons(ETH_P_IP)) {
eddc9ec5 2040 const struct iphdr *iph = ip_hdr(skb);
d1d25aab 2041
7a291083
JBT		 2042 /* IPv4 */
2043 write_ip_start_end(swqe, skb);
2044
eddc9ec5 2045 if (iph->protocol == IPPROTO_TCP) {
7a291083
JBT		 2046 swqe->tx_control |= EHEA_SWQE_CRC
2047 | EHEA_SWQE_IP_CHECKSUM
2048 | EHEA_SWQE_TCP_CHECKSUM
2049 | EHEA_SWQE_IMM_DATA_PRESENT;
2050
2051 write_tcp_offset_end(swqe, skb);
2052
eddc9ec5 2053 } else if (iph->protocol == IPPROTO_UDP) {
d1d25aab
JBT		 2054 if ((iph->frag_off & IP_MF)
2055 || (iph->frag_off & IP_OFFSET))
7a291083
JBT		 2056 /* IP fragment, so don't change cs */
2057 swqe->tx_control |= EHEA_SWQE_CRC
2058 | EHEA_SWQE_IMM_DATA_PRESENT;
2059 else {
2060 swqe->tx_control |= EHEA_SWQE_CRC
2061 | EHEA_SWQE_IP_CHECKSUM
2062 | EHEA_SWQE_TCP_CHECKSUM
2063 | EHEA_SWQE_IMM_DATA_PRESENT;
2064
2065 write_udp_offset_end(swqe, skb);
2066 }
2067 } else {
2068 /* icmp (big data) and
2069 ip segmentation packets (all other ip packets) */
2070 swqe->tx_control |= EHEA_SWQE_CRC
2071 | EHEA_SWQE_IP_CHECKSUM
2072 | EHEA_SWQE_IMM_DATA_PRESENT;
2073 }
2074 } else {
2075 /* Other Ethernet Protocol */
2076 swqe->tx_control |= EHEA_SWQE_CRC | EHEA_SWQE_IMM_DATA_PRESENT;
2077 }
2078 /* copy (immediate) data */
2079 if (nfrags == 0) {
2080 /* data is in a single piece */
d626f62b 2081 skb_copy_from_linear_data(skb, imm_data, skb->len);
7a291083
JBT		 2082 } else {
2083 /* first copy data from the skb->data buffer ... */
d626f62b
ACM		 2084 skb_copy_from_linear_data(skb, imm_data,
2085 skb->len - skb->data_len);
7a291083
JBT		 2086 imm_data += skb->len - skb->data_len;
2087
2088 /* ... then copy data from the fragments */
2089 for (i = 0; i < nfrags; i++) {
2090 frag = &skb_shinfo(skb)->frags[i];
2091 memcpy(imm_data,
2092 page_address(frag->page) + frag->page_offset,
2093 frag->size);
2094 imm_data += frag->size;
2095 }
2096 }
2097 swqe->immediate_data_length = skb->len;
2098 dev_kfree_skb(skb);
2099}
2100
18604c54
JBT		 2101static inline int ehea_hash_skb(struct sk_buff *skb, int num_qps)
2102{
2103 struct tcphdr *tcp;
2104 u32 tmp;
2105
2106 if ((skb->protocol == htons(ETH_P_IP)) &&
88ca2d07 2107 (ip_hdr(skb)->protocol == IPPROTO_TCP)) {
508d2b5d
DM		 2108 tcp = (struct tcphdr *)(skb_network_header(skb) +
2109 (ip_hdr(skb)->ihl * 4));
18604c54 2110 tmp = (tcp->source + (tcp->dest << 16)) % 31;
88ca2d07 2111 tmp += ip_hdr(skb)->daddr % 31;
18604c54 2112 return tmp % num_qps;
508d2b5d 2113 } else
18604c54
JBT		 2114 return 0;
2115}
2116
7a291083
JBT		 2117static int ehea_start_xmit(struct sk_buff *skb, struct net_device *dev)
2118{
2119 struct ehea_port *port = netdev_priv(dev);
2120 struct ehea_swqe *swqe;
2121 unsigned long flags;
2122 u32 lkey;
2123 int swqe_index;
18604c54
JBT		 2124 struct ehea_port_res *pr;
2125
2126 pr = &port->port_res[ehea_hash_skb(skb, port->num_tx_qps)];
2127
18604c54
JBT		 2128 if (!spin_trylock(&pr->xmit_lock))
2129 return NETDEV_TX_BUSY;
2130
2131 if (pr->queue_stopped) {
2132 spin_unlock(&pr->xmit_lock);
2133 return NETDEV_TX_BUSY;
2134 }
7a291083
JBT		 2135
2136 swqe = ehea_get_swqe(pr->qp, &swqe_index);
2137 memset(swqe, 0, SWQE_HEADER_SIZE);
2138 atomic_dec(&pr->swqe_avail);
2139
2140 if (skb->len <= SWQE3_MAX_IMM) {
2141 u32 sig_iv = port->sig_comp_iv;
2142 u32 swqe_num = pr->swqe_id_counter;
2143 ehea_xmit3(skb, dev, swqe);
2144 swqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE3_TYPE)
2145 | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, swqe_num);
2146 if (pr->swqe_ll_count >= (sig_iv - 1)) {
2147 swqe->wr_id |= EHEA_BMASK_SET(EHEA_WR_ID_REFILL,
2148 sig_iv);
2149 swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
2150 pr->swqe_ll_count = 0;
2151 } else
2152 pr->swqe_ll_count += 1;
2153 } else {
2154 swqe->wr_id =
2155 EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE2_TYPE)
2156 | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, pr->swqe_id_counter)
acbddb59 2157 | EHEA_BMASK_SET(EHEA_WR_ID_REFILL, 1)
7a291083
JBT		 2158 | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, pr->sq_skba.index);
2159 pr->sq_skba.arr[pr->sq_skba.index] = skb;
2160
2161 pr->sq_skba.index++;
2162 pr->sq_skba.index &= (pr->sq_skba.len - 1);
2163
2164 lkey = pr->send_mr.lkey;
2165 ehea_xmit2(skb, dev, swqe, lkey);
acbddb59 2166 swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
7a291083
JBT		 2167 }
2168 pr->swqe_id_counter += 1;
2169
2170 if (port->vgrp && vlan_tx_tag_present(skb)) {
2171 swqe->tx_control |= EHEA_SWQE_VLAN_INSERT;
2172 swqe->vlan_tag = vlan_tx_tag_get(skb);
2173 }
2174
2175 if (netif_msg_tx_queued(port)) {
2176 ehea_info("post swqe on QP %d", pr->qp->init_attr.qp_nr);
bff0a55f 2177 ehea_dump(swqe, 512, "swqe");
7a291083
JBT		 2178 }
2179
2c69448b
JBT		 2180 if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) {
2181 netif_stop_queue(dev);
2182 swqe->tx_control |= EHEA_SWQE_PURGE;
2183 }
44c82152 2184
7a291083 2185 ehea_post_swqe(pr->qp, swqe);
7393b87c 2186 pr->tx_packets++;
7a291083
JBT		 2187
2188 if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) {
2189 spin_lock_irqsave(&pr->netif_queue, flags);
2190 if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) {
acbddb59 2191 pr->p_stats.queue_stopped++;
7a291083
JBT		 2192 netif_stop_queue(dev);
2193 pr->queue_stopped = 1;
2194 }
2195 spin_unlock_irqrestore(&pr->netif_queue, flags);
2196 }
2197 dev->trans_start = jiffies;
2198 spin_unlock(&pr->xmit_lock);
2c69448b 2199
7a291083
JBT		 2200 return NETDEV_TX_OK;
2201}
2202
2203static void ehea_vlan_rx_register(struct net_device *dev,
2204 struct vlan_group *grp)
2205{
2206 struct ehea_port *port = netdev_priv(dev);
2207 struct ehea_adapter *adapter = port->adapter;
2208 struct hcp_ehea_port_cb1 *cb1;
2209 u64 hret;
2210
2211 port->vgrp = grp;
2212
3faf2693 2213 cb1 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083
JBT		 2214 if (!cb1) {
2215 ehea_error("no mem for cb1");
2216 goto out;
2217 }
2218
7a291083
JBT		 2219 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
2220 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2221 if (hret != H_SUCCESS)
2222 ehea_error("modify_ehea_port failed");
2223
3faf2693 2224 free_page((unsigned long)cb1);
7a291083
JBT		 2225out:
2226 return;
2227}
2228
2229static void ehea_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
2230{
2231 struct ehea_port *port = netdev_priv(dev);
2232 struct ehea_adapter *adapter = port->adapter;
2233 struct hcp_ehea_port_cb1 *cb1;
2234 int index;
2235 u64 hret;
2236
3faf2693 2237 cb1 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083
JBT		 2238 if (!cb1) {
2239 ehea_error("no mem for cb1");
2240 goto out;
2241 }
2242
2243 hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
2244 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2245 if (hret != H_SUCCESS) {
2246 ehea_error("query_ehea_port failed");
2247 goto out;
2248 }
2249
2250 index = (vid / 64);
dec590c1 2251 cb1->vlan_filter[index] |= ((u64)(0x8000000000000000 >> (vid & 0x3F)));
7a291083
JBT		 2252
2253 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
2254 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2255 if (hret != H_SUCCESS)
2256 ehea_error("modify_ehea_port failed");
2257out:
3faf2693 2258 free_page((unsigned long)cb1);
7a291083
JBT		 2259 return;
2260}
2261
2262static void ehea_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
2263{
2264 struct ehea_port *port = netdev_priv(dev);
2265 struct ehea_adapter *adapter = port->adapter;
2266 struct hcp_ehea_port_cb1 *cb1;
2267 int index;
2268 u64 hret;
2269
5c15bdec 2270 vlan_group_set_device(port->vgrp, vid, NULL);
7a291083 2271
3faf2693 2272 cb1 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083
JBT		 2273 if (!cb1) {
2274 ehea_error("no mem for cb1");
2275 goto out;
2276 }
2277
2278 hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
2279 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2280 if (hret != H_SUCCESS) {
2281 ehea_error("query_ehea_port failed");
2282 goto out;
2283 }
2284
2285 index = (vid / 64);
dec590c1 2286 cb1->vlan_filter[index] &= ~((u64)(0x8000000000000000 >> (vid & 0x3F)));
7a291083
JBT		 2287
2288 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
2289 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2290 if (hret != H_SUCCESS)
2291 ehea_error("modify_ehea_port failed");
2292out:
3faf2693 2293 free_page((unsigned long)cb1);
7a291083
JBT		 2294 return;
2295}
2296
2297int ehea_activate_qp(struct ehea_adapter *adapter, struct ehea_qp *qp)
2298{
2299 int ret = -EIO;
2300 u64 hret;
2301 u16 dummy16 = 0;
2302 u64 dummy64 = 0;
508d2b5d 2303 struct hcp_modify_qp_cb0 *cb0;
7a291083 2304
3faf2693 2305 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083
JBT		 2306 if (!cb0) {
2307 ret = -ENOMEM;
2308 goto out;
2309 }
2310
2311 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2312 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2313 if (hret != H_SUCCESS) {
2314 ehea_error("query_ehea_qp failed (1)");
2315 goto out;
2316 }
2317
2318 cb0->qp_ctl_reg = H_QP_CR_STATE_INITIALIZED;
2319 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2320 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2321 &dummy64, &dummy64, &dummy16, &dummy16);
2322 if (hret != H_SUCCESS) {
2323 ehea_error("modify_ehea_qp failed (1)");
2324 goto out;
2325 }
2326
2327 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2328 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2329 if (hret != H_SUCCESS) {
2330 ehea_error("query_ehea_qp failed (2)");
2331 goto out;
2332 }
2333
2334 cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_INITIALIZED;
2335 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2336 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2337 &dummy64, &dummy64, &dummy16, &dummy16);
2338 if (hret != H_SUCCESS) {
2339 ehea_error("modify_ehea_qp failed (2)");
2340 goto out;
2341 }
2342
2343 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2344 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2345 if (hret != H_SUCCESS) {
2346 ehea_error("query_ehea_qp failed (3)");
2347 goto out;
2348 }
2349
2350 cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_RDY2SND;
2351 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2352 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2353 &dummy64, &dummy64, &dummy16, &dummy16);
2354 if (hret != H_SUCCESS) {
2355 ehea_error("modify_ehea_qp failed (3)");
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 (4)");
2363 goto out;
2364 }
2365
2366 ret = 0;
2367out:
3faf2693 2368 free_page((unsigned long)cb0);
7a291083
JBT		 2369 return ret;
2370}
2371
2372static int ehea_port_res_setup(struct ehea_port *port, int def_qps,
2373 int add_tx_qps)
2374{
2375 int ret, i;
2376 struct port_res_cfg pr_cfg, pr_cfg_small_rx;
2377 enum ehea_eq_type eq_type = EHEA_EQ;
2378
2379 port->qp_eq = ehea_create_eq(port->adapter, eq_type,
2380 EHEA_MAX_ENTRIES_EQ, 1);
2381 if (!port->qp_eq) {
2382 ret = -EINVAL;
2383 ehea_error("ehea_create_eq failed (qp_eq)");
2384 goto out_kill_eq;
2385 }
2386
2387 pr_cfg.max_entries_rcq = rq1_entries + rq2_entries + rq3_entries;
18604c54 2388 pr_cfg.max_entries_scq = sq_entries * 2;
7a291083
JBT		 2389 pr_cfg.max_entries_sq = sq_entries;
2390 pr_cfg.max_entries_rq1 = rq1_entries;
2391 pr_cfg.max_entries_rq2 = rq2_entries;
2392 pr_cfg.max_entries_rq3 = rq3_entries;
2393
2394 pr_cfg_small_rx.max_entries_rcq = 1;
2395 pr_cfg_small_rx.max_entries_scq = sq_entries;
2396 pr_cfg_small_rx.max_entries_sq = sq_entries;
2397 pr_cfg_small_rx.max_entries_rq1 = 1;
2398 pr_cfg_small_rx.max_entries_rq2 = 1;
2399 pr_cfg_small_rx.max_entries_rq3 = 1;
2400
2401 for (i = 0; i < def_qps; i++) {
2402 ret = ehea_init_port_res(port, &port->port_res[i], &pr_cfg, i);
2403 if (ret)
2404 goto out_clean_pr;
2405 }
2406 for (i = def_qps; i < def_qps + add_tx_qps; i++) {
2407 ret = ehea_init_port_res(port, &port->port_res[i],
2408 &pr_cfg_small_rx, i);
2409 if (ret)
2410 goto out_clean_pr;
2411 }
2412
2413 return 0;
2414
2415out_clean_pr:
2416 while (--i >= 0)
2417 ehea_clean_portres(port, &port->port_res[i]);
2418
2419out_kill_eq:
2420 ehea_destroy_eq(port->qp_eq);
2421 return ret;
2422}
2423
2424static int ehea_clean_all_portres(struct ehea_port *port)
2425{
2426 int ret = 0;
2427 int i;
2428
508d2b5d 2429 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
7a291083
JBT		 2430 ret |= ehea_clean_portres(port, &port->port_res[i]);
2431
2432 ret |= ehea_destroy_eq(port->qp_eq);
2433
2434 return ret;
2435}
2436
35cf2e2e 2437static void ehea_remove_adapter_mr(struct ehea_adapter *adapter)
1211bb6d 2438{
35cf2e2e
TK		 2439 if (adapter->active_ports)
2440 return;
1211bb6d
TK		 2441
2442 ehea_rem_mr(&adapter->mr);
2443}
2444
35cf2e2e 2445static int ehea_add_adapter_mr(struct ehea_adapter *adapter)
1211bb6d 2446{
35cf2e2e
TK		 2447 if (adapter->active_ports)
2448 return 0;
1211bb6d
TK		 2449
2450 return ehea_reg_kernel_mr(adapter, &adapter->mr);
2451}
2452
7a291083
JBT		 2453static int ehea_up(struct net_device *dev)
2454{
2455 int ret, i;
2456 struct ehea_port *port = netdev_priv(dev);
7a291083
JBT		 2457
2458 if (port->state == EHEA_PORT_UP)
2459 return 0;
2460
9f71a568 2461 mutex_lock(&ehea_fw_handles.lock);
21eee2dd 2462
7a291083
JBT		 2463 ret = ehea_port_res_setup(port, port->num_def_qps,
2464 port->num_add_tx_qps);
2465 if (ret) {
2466 ehea_error("port_res_failed");
2467 goto out;
2468 }
2469
2470 /* Set default QP for this port */
2471 ret = ehea_configure_port(port);
2472 if (ret) {
2473 ehea_error("ehea_configure_port failed. ret:%d", ret);
2474 goto out_clean_pr;
2475 }
2476
7a291083
JBT		 2477 ret = ehea_reg_interrupts(dev);
2478 if (ret) {
f9e29228
TK		 2479 ehea_error("reg_interrupts failed. ret:%d", ret);
2480 goto out_clean_pr;
7a291083
JBT		 2481 }
2482
508d2b5d 2483 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
7a291083
JBT		 2484 ret = ehea_activate_qp(port->adapter, port->port_res[i].qp);
2485 if (ret) {
2486 ehea_error("activate_qp failed");
2487 goto out_free_irqs;
2488 }
2489 }
2490
508d2b5d 2491 for (i = 0; i < port->num_def_qps; i++) {
7a291083
JBT		 2492 ret = ehea_fill_port_res(&port->port_res[i]);
2493 if (ret) {
2494 ehea_error("out_free_irqs");
2495 goto out_free_irqs;
2496 }
2497 }
2498
5c2cec14 2499 spin_lock(&ehea_bcmc_regs.lock);
21eee2dd
TK		 2500
2501 ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
2502 if (ret) {
2503 ret = -EIO;
2504 goto out_free_irqs;
2505 }
2506
7a291083 2507 port->state = EHEA_PORT_UP;
21eee2dd
TK		 2508
2509 ret = 0;
7a291083
JBT		 2510 goto out;
2511
2512out_free_irqs:
2513 ehea_free_interrupts(dev);
2514
7a291083
JBT		 2515out_clean_pr:
2516 ehea_clean_all_portres(port);
2517out:
44c82152
TK		 2518 if (ret)
2519 ehea_info("Failed starting %s. ret=%i", dev->name, ret);
2520
21eee2dd 2521 ehea_update_bcmc_registrations();
5c2cec14 2522 spin_unlock(&ehea_bcmc_regs.lock);
21eee2dd
TK		 2523
2524 ehea_update_firmware_handles();
9f71a568 2525 mutex_unlock(&ehea_fw_handles.lock);
21eee2dd 2526
7a291083
JBT		 2527 return ret;
2528}
2529
bea3348e
SH		 2530static void port_napi_disable(struct ehea_port *port)
2531{
2532 int i;
2533
0173b793 2534 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
bea3348e
SH		 2535 napi_disable(&port->port_res[i].napi);
2536}
2537
2538static void port_napi_enable(struct ehea_port *port)
2539{
2540 int i;
2541
0173b793 2542 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
bea3348e
SH		 2543 napi_enable(&port->port_res[i].napi);
2544}
2545
7a291083
JBT		 2546static int ehea_open(struct net_device *dev)
2547{
2548 int ret;
2549 struct ehea_port *port = netdev_priv(dev);
2550
a5af6ad3 2551 mutex_lock(&port->port_lock);
7a291083
JBT		 2552
2553 if (netif_msg_ifup(port))
2554 ehea_info("enabling port %s", dev->name);
2555
2556 ret = ehea_up(dev);
bea3348e
SH		 2557 if (!ret) {
2558 port_napi_enable(port);
7a291083 2559 netif_start_queue(dev);
bea3348e 2560 }
7a291083 2561
a5af6ad3 2562 mutex_unlock(&port->port_lock);
7a291083
JBT		 2563
2564 return ret;
2565}
2566
2567static int ehea_down(struct net_device *dev)
2568{
bea3348e 2569 int ret;
7a291083
JBT		 2570 struct ehea_port *port = netdev_priv(dev);
2571
2572 if (port->state == EHEA_PORT_DOWN)
2573 return 0;
2574
dbbcbb2d
DW		 2575 mutex_lock(&ehea_fw_handles.lock);
2576
5c2cec14 2577 spin_lock(&ehea_bcmc_regs.lock);
7a291083 2578 ehea_drop_multicast_list(dev);
21eee2dd
TK		 2579 ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
2580
7a291083
JBT		 2581 ehea_free_interrupts(dev);
2582
7a291083 2583 port->state = EHEA_PORT_DOWN;
44c82152 2584
21eee2dd 2585 ehea_update_bcmc_registrations();
5c2cec14 2586 spin_unlock(&ehea_bcmc_regs.lock);
21eee2dd 2587
44c82152
TK		 2588 ret = ehea_clean_all_portres(port);
2589 if (ret)
2590 ehea_info("Failed freeing resources for %s. ret=%i",
2591 dev->name, ret);
2592
21eee2dd 2593 ehea_update_firmware_handles();
9f71a568 2594 mutex_unlock(&ehea_fw_handles.lock);
21eee2dd 2595
7a291083
JBT		 2596 return ret;
2597}
2598
2599static int ehea_stop(struct net_device *dev)
2600{
2601 int ret;
2602 struct ehea_port *port = netdev_priv(dev);
2603
2604 if (netif_msg_ifdown(port))
2605 ehea_info("disabling port %s", dev->name);
2606
2f69ae01 2607 set_bit(__EHEA_DISABLE_PORT_RESET, &port->flags);
4bb073c0 2608 cancel_work_sync(&port->reset_task);
a5af6ad3 2609 mutex_lock(&port->port_lock);
7a291083 2610 netif_stop_queue(dev);
0173b793 2611 port_napi_disable(port);
7a291083 2612 ret = ehea_down(dev);
a5af6ad3 2613 mutex_unlock(&port->port_lock);
2f69ae01 2614 clear_bit(__EHEA_DISABLE_PORT_RESET, &port->flags);
7a291083
JBT		 2615 return ret;
2616}
2617
22559c5d 2618static void ehea_purge_sq(struct ehea_qp *orig_qp)
2c69448b
JBT		 2619{
2620 struct ehea_qp qp = *orig_qp;
2621 struct ehea_qp_init_attr *init_attr = &qp.init_attr;
2622 struct ehea_swqe *swqe;
2623 int wqe_index;
2624 int i;
2625
2626 for (i = 0; i < init_attr->act_nr_send_wqes; i++) {
2627 swqe = ehea_get_swqe(&qp, &wqe_index);
2628 swqe->tx_control |= EHEA_SWQE_PURGE;
2629 }
2630}
2631
22559c5d 2632static void ehea_flush_sq(struct ehea_port *port)
44fb3126
TK		 2633{
2634 int i;
2635
2636 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
2637 struct ehea_port_res *pr = &port->port_res[i];
2638 int swqe_max = pr->sq_skba_size - 2 - pr->swqe_ll_count;
2639 int k = 0;
2640 while (atomic_read(&pr->swqe_avail) < swqe_max) {
2641 msleep(5);
2642 if (++k == 20)
2643 break;
2644 }
2645 }
2646}
2647
2c69448b
JBT		 2648int ehea_stop_qps(struct net_device *dev)
2649{
2650 struct ehea_port *port = netdev_priv(dev);
2651 struct ehea_adapter *adapter = port->adapter;
508d2b5d 2652 struct hcp_modify_qp_cb0 *cb0;
2c69448b
JBT		 2653 int ret = -EIO;
2654 int dret;
2655 int i;
2656 u64 hret;
2657 u64 dummy64 = 0;
2658 u16 dummy16 = 0;
2659
3faf2693 2660 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
2c69448b
JBT		 2661 if (!cb0) {
2662 ret = -ENOMEM;
2663 goto out;
2664 }
2665
2666 for (i = 0; i < (port->num_def_qps + port->num_add_tx_qps); i++) {
2667 struct ehea_port_res *pr = &port->port_res[i];
2668 struct ehea_qp *qp = pr->qp;
2669
2670 /* Purge send queue */
2671 ehea_purge_sq(qp);
2672
2673 /* Disable queue pair */
2674 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2675 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2676 cb0);
2677 if (hret != H_SUCCESS) {
2678 ehea_error("query_ehea_qp failed (1)");
2679 goto out;
2680 }
2681
2682 cb0->qp_ctl_reg = (cb0->qp_ctl_reg & H_QP_CR_RES_STATE) << 8;
2683 cb0->qp_ctl_reg &= ~H_QP_CR_ENABLED;
2684
2685 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2686 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG,
2687 1), cb0, &dummy64,
2688 &dummy64, &dummy16, &dummy16);
2689 if (hret != H_SUCCESS) {
2690 ehea_error("modify_ehea_qp failed (1)");
2691 goto out;
2692 }
2693
2694 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2695 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2696 cb0);
2697 if (hret != H_SUCCESS) {
2698 ehea_error("query_ehea_qp failed (2)");
2699 goto out;
2700 }
2701
2702 /* deregister shared memory regions */
2703 dret = ehea_rem_smrs(pr);
2704 if (dret) {
2705 ehea_error("unreg shared memory region failed");
2706 goto out;
2707 }
2708 }
2709
2710 ret = 0;
2711out:
3faf2693 2712 free_page((unsigned long)cb0);
2c69448b
JBT		 2713
2714 return ret;
2715}
2716
508d2b5d 2717void ehea_update_rqs(struct ehea_qp *orig_qp, struct ehea_port_res *pr)
2c69448b
JBT		 2718{
2719 struct ehea_qp qp = *orig_qp;
2720 struct ehea_qp_init_attr *init_attr = &qp.init_attr;
2721 struct ehea_rwqe *rwqe;
2722 struct sk_buff **skba_rq2 = pr->rq2_skba.arr;
2723 struct sk_buff **skba_rq3 = pr->rq3_skba.arr;
2724 struct sk_buff *skb;
2725 u32 lkey = pr->recv_mr.lkey;
2726
2727
2728 int i;
2729 int index;
2730
2731 for (i = 0; i < init_attr->act_nr_rwqes_rq2 + 1; i++) {
2732 rwqe = ehea_get_next_rwqe(&qp, 2);
2733 rwqe->sg_list[0].l_key = lkey;
2734 index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, rwqe->wr_id);
2735 skb = skba_rq2[index];
2736 if (skb)
2737 rwqe->sg_list[0].vaddr = ehea_map_vaddr(skb->data);
2738 }
2739
2740 for (i = 0; i < init_attr->act_nr_rwqes_rq3 + 1; i++) {
2741 rwqe = ehea_get_next_rwqe(&qp, 3);
2742 rwqe->sg_list[0].l_key = lkey;
2743 index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, rwqe->wr_id);
2744 skb = skba_rq3[index];
2745 if (skb)
2746 rwqe->sg_list[0].vaddr = ehea_map_vaddr(skb->data);
2747 }
2748}
2749
2750int ehea_restart_qps(struct net_device *dev)
2751{
2752 struct ehea_port *port = netdev_priv(dev);
2753 struct ehea_adapter *adapter = port->adapter;
2754 int ret = 0;
2755 int i;
2756
508d2b5d 2757 struct hcp_modify_qp_cb0 *cb0;
2c69448b
JBT		 2758 u64 hret;
2759 u64 dummy64 = 0;
2760 u16 dummy16 = 0;
2761
3faf2693 2762 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
2c69448b
JBT		 2763 if (!cb0) {
2764 ret = -ENOMEM;
2765 goto out;
2766 }
2767
2768 for (i = 0; i < (port->num_def_qps + port->num_add_tx_qps); i++) {
2769 struct ehea_port_res *pr = &port->port_res[i];
2770 struct ehea_qp *qp = pr->qp;
2771
2772 ret = ehea_gen_smrs(pr);
2773 if (ret) {
2774 ehea_error("creation of shared memory regions failed");
2775 goto out;
2776 }
2777
2778 ehea_update_rqs(qp, pr);
2779
2780 /* Enable queue pair */
2781 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2782 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2783 cb0);
2784 if (hret != H_SUCCESS) {
2785 ehea_error("query_ehea_qp failed (1)");
2786 goto out;
2787 }
2788
2789 cb0->qp_ctl_reg = (cb0->qp_ctl_reg & H_QP_CR_RES_STATE) << 8;
2790 cb0->qp_ctl_reg |= H_QP_CR_ENABLED;
2791
2792 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2793 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG,
2794 1), cb0, &dummy64,
2795 &dummy64, &dummy16, &dummy16);
2796 if (hret != H_SUCCESS) {
2797 ehea_error("modify_ehea_qp failed (1)");
2798 goto out;
2799 }
2800
2801 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2802 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2803 cb0);
2804 if (hret != H_SUCCESS) {
2805 ehea_error("query_ehea_qp failed (2)");
2806 goto out;
2807 }
2808
2809 /* refill entire queue */
2810 ehea_refill_rq1(pr, pr->rq1_skba.index, 0);
2811 ehea_refill_rq2(pr, 0);
2812 ehea_refill_rq3(pr, 0);
2813 }
2814out:
3faf2693 2815 free_page((unsigned long)cb0);
2c69448b
JBT		 2816
2817 return ret;
2818}
2819
c4028958 2820static void ehea_reset_port(struct work_struct *work)
7a291083
JBT		 2821{
2822 int ret;
c4028958
DH		 2823 struct ehea_port *port =
2824 container_of(work, struct ehea_port, reset_task);
2825 struct net_device *dev = port->netdev;
7a291083
JBT		 2826
2827 port->resets++;
a5af6ad3 2828 mutex_lock(&port->port_lock);
7a291083 2829 netif_stop_queue(dev);
bea3348e
SH		 2830
2831 port_napi_disable(port);
7a291083 2832
44c82152 2833 ehea_down(dev);
7a291083
JBT		 2834
2835 ret = ehea_up(dev);
44c82152 2836 if (ret)
7a291083 2837 goto out;
7a291083 2838
2c69448b
JBT		 2839 ehea_set_multicast_list(dev);
2840
7a291083
JBT		 2841 if (netif_msg_timer(port))
2842 ehea_info("Device %s resetted successfully", dev->name);
2843
bea3348e
SH		 2844 port_napi_enable(port);
2845
7a291083
JBT		 2846 netif_wake_queue(dev);
2847out:
a5af6ad3 2848 mutex_unlock(&port->port_lock);
7a291083
JBT		 2849 return;
2850}
2851
44c82152
TK		 2852static void ehea_rereg_mrs(struct work_struct *work)
2853{
2854 int ret, i;
2855 struct ehea_adapter *adapter;
2856
06f89edf 2857 mutex_lock(&dlpar_mem_lock);
d4f12daf 2858 ehea_info("LPAR memory changed - re-initializing driver");
44c82152
TK		 2859
2860 list_for_each_entry(adapter, &adapter_list, list)
2861 if (adapter->active_ports) {
2862 /* Shutdown all ports */
2863 for (i = 0; i < EHEA_MAX_PORTS; i++) {
2864 struct ehea_port *port = adapter->port[i];
a5af6ad3 2865 struct net_device *dev;
44c82152 2866
a5af6ad3
DW		 2867 if (!port)
2868 continue;
44c82152 2869
a5af6ad3
DW		 2870 dev = port->netdev;
2871
2872 if (dev->flags & IFF_UP) {
2873 mutex_lock(&port->port_lock);
2874 netif_stop_queue(dev);
df39e8ba 2875 ehea_flush_sq(port);
a5af6ad3
DW		 2876 ret = ehea_stop_qps(dev);
2877 if (ret) {
2878 mutex_unlock(&port->port_lock);
2879 goto out;
44c82152 2880 }
a5af6ad3
DW		 2881 port_napi_disable(port);
2882 mutex_unlock(&port->port_lock);
44c82152
TK		 2883 }
2884 }
2885
2886 /* Unregister old memory region */
2887 ret = ehea_rem_mr(&adapter->mr);
2888 if (ret) {
2889 ehea_error("unregister MR failed - driver"
2890 " inoperable!");
2891 goto out;
2892 }
2893 }
2894
44c82152
TK		 2895 clear_bit(__EHEA_STOP_XFER, &ehea_driver_flags);
2896
2897 list_for_each_entry(adapter, &adapter_list, list)
2898 if (adapter->active_ports) {
2899 /* Register new memory region */
2900 ret = ehea_reg_kernel_mr(adapter, &adapter->mr);
2901 if (ret) {
2902 ehea_error("register MR failed - driver"
2903 " inoperable!");
2904 goto out;
2905 }
2906
2907 /* Restart all ports */
2908 for (i = 0; i < EHEA_MAX_PORTS; i++) {
2909 struct ehea_port *port = adapter->port[i];
2910
2911 if (port) {
2912 struct net_device *dev = port->netdev;
2913
2914 if (dev->flags & IFF_UP) {
a5af6ad3 2915 mutex_lock(&port->port_lock);
2c69448b
JBT		 2916 port_napi_enable(port);
2917 ret = ehea_restart_qps(dev);
2918 if (!ret)
44c82152 2919 netif_wake_queue(dev);
a5af6ad3 2920 mutex_unlock(&port->port_lock);
44c82152
TK		 2921 }
2922 }
2923 }
2924 }
68905eb4 2925 ehea_info("re-initializing driver complete");
44c82152 2926out:
68905eb4 2927 mutex_unlock(&dlpar_mem_lock);
44c82152
TK		 2928 return;
2929}
2930
7a291083
JBT		 2931static void ehea_tx_watchdog(struct net_device *dev)
2932{
2933 struct ehea_port *port = netdev_priv(dev);
2934
2c69448b
JBT		 2935 if (netif_carrier_ok(dev) &&
2936 !test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))
2f69ae01 2937 ehea_schedule_port_reset(port);
7a291083
JBT		 2938}
2939
2940int ehea_sense_adapter_attr(struct ehea_adapter *adapter)
2941{
2942 struct hcp_query_ehea *cb;
2943 u64 hret;
2944 int ret;
2945
3faf2693 2946 cb = (void *)get_zeroed_page(GFP_KERNEL);
7a291083
JBT		 2947 if (!cb) {
2948 ret = -ENOMEM;
2949 goto out;
2950 }
2951
2952 hret = ehea_h_query_ehea(adapter->handle, cb);
2953
2954 if (hret != H_SUCCESS) {
2955 ret = -EIO;
2956 goto out_herr;
2957 }
2958
7a291083
JBT		 2959 adapter->max_mc_mac = cb->max_mc_mac - 1;
2960 ret = 0;
2961
2962out_herr:
3faf2693 2963 free_page((unsigned long)cb);
7a291083
JBT		 2964out:
2965 return ret;
2966}
2967
1acf2318 2968int ehea_get_jumboframe_status(struct ehea_port *port, int *jumbo)
7a291083 2969{
7a291083 2970 struct hcp_ehea_port_cb4 *cb4;
1acf2318
JBT		 2971 u64 hret;
2972 int ret = 0;
7a291083 2973
1acf2318 2974 *jumbo = 0;
7a291083 2975
1acf2318 2976 /* (Try to) enable *jumbo frames */
3faf2693 2977 cb4 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083
JBT		 2978 if (!cb4) {
2979 ehea_error("no mem for cb4");
1acf2318
JBT		 2980 ret = -ENOMEM;
2981 goto out;
7a291083 2982 } else {
1acf2318 2983 hret = ehea_h_query_ehea_port(port->adapter->handle,
9c750b7d
TK		 2984 port->logical_port_id,
2985 H_PORT_CB4,
2986 H_PORT_CB4_JUMBO, cb4);
9c750b7d
TK		 2987 if (hret == H_SUCCESS) {
2988 if (cb4->jumbo_frame)
1acf2318 2989 *jumbo = 1;
9c750b7d
TK		 2990 else {
2991 cb4->jumbo_frame = 1;
1acf2318
JBT		 2992 hret = ehea_h_modify_ehea_port(port->adapter->
2993 handle,
9c750b7d 2994 port->
1acf2318 2995 logical_port_id,
9c750b7d
TK		 2996 H_PORT_CB4,
2997 H_PORT_CB4_JUMBO,
2998 cb4);
2999 if (hret == H_SUCCESS)
1acf2318 3000 *jumbo = 1;
9c750b7d 3001 }
1acf2318
JBT		 3002 } else
3003 ret = -EINVAL;
3004
3faf2693 3005 free_page((unsigned long)cb4);
7a291083 3006 }
1acf2318
JBT		 3007out:
3008 return ret;
3009}
3010
3011static ssize_t ehea_show_port_id(struct device *dev,
3012 struct device_attribute *attr, char *buf)
3013{
3014 struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev);
a8e34fda 3015 return sprintf(buf, "%d", port->logical_port_id);
1acf2318
JBT		 3016}
3017
3018static DEVICE_ATTR(log_port_id, S_IRUSR | S_IRGRP | S_IROTH, ehea_show_port_id,
3019 NULL);
3020
3021static void __devinit logical_port_release(struct device *dev)
3022{
3023 struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev);
3024 of_node_put(port->ofdev.node);
3025}
3026
3027static struct device *ehea_register_port(struct ehea_port *port,
3028 struct device_node *dn)
3029{
3030 int ret;
3031
3032 port->ofdev.node = of_node_get(dn);
6b08f3ae 3033 port->ofdev.dev.parent = &port->adapter->ofdev->dev;
d1dea38d 3034 port->ofdev.dev.bus = &ibmebus_bus_type;
1acf2318 3035
d1dea38d 3036 sprintf(port->ofdev.dev.bus_id, "port%d", port_name_cnt++);
1acf2318
JBT		 3037 port->ofdev.dev.release = logical_port_release;
3038
3039 ret = of_device_register(&port->ofdev);
3040 if (ret) {
3041 ehea_error("failed to register device. ret=%d", ret);
3042 goto out;
3043 }
3044
3045 ret = device_create_file(&port->ofdev.dev, &dev_attr_log_port_id);
d1d25aab 3046 if (ret) {
1acf2318
JBT		 3047 ehea_error("failed to register attributes, ret=%d", ret);
3048 goto out_unreg_of_dev;
3049 }
e542aa6b 3050
1acf2318
JBT		 3051 return &port->ofdev.dev;
3052
3053out_unreg_of_dev:
3054 of_device_unregister(&port->ofdev);
3055out:
3056 return NULL;
3057}
3058
3059static void ehea_unregister_port(struct ehea_port *port)
3060{
3061 device_remove_file(&port->ofdev.dev, &dev_attr_log_port_id);
3062 of_device_unregister(&port->ofdev);
3063}
3064
086c1b2c
TK		 3065static const struct net_device_ops ehea_netdev_ops = {
3066 .ndo_open = ehea_open,
3067 .ndo_stop = ehea_stop,
3068 .ndo_start_xmit = ehea_start_xmit,
3069#ifdef CONFIG_NET_POLL_CONTROLLER
3070 .ndo_poll_controller = ehea_netpoll,
3071#endif
3072 .ndo_get_stats = ehea_get_stats,
3073 .ndo_set_mac_address = ehea_set_mac_addr,
3074 .ndo_set_multicast_list = ehea_set_multicast_list,
3075 .ndo_change_mtu = ehea_change_mtu,
3076 .ndo_vlan_rx_register = ehea_vlan_rx_register,
3077 .ndo_vlan_rx_add_vid = ehea_vlan_rx_add_vid,
3078 .ndo_vlan_rx_kill_vid = ehea_vlan_rx_kill_vid
3079};
3080
1acf2318
JBT		 3081struct ehea_port *ehea_setup_single_port(struct ehea_adapter *adapter,
3082 u32 logical_port_id,
3083 struct device_node *dn)
3084{
3085 int ret;
3086 struct net_device *dev;
3087 struct ehea_port *port;
3088 struct device *port_dev;
3089 int jumbo;
3090
3091 /* allocate memory for the port structures */
3092 dev = alloc_etherdev(sizeof(struct ehea_port));
3093
3094 if (!dev) {
3095 ehea_error("no mem for net_device");
3096 ret = -ENOMEM;
3097 goto out_err;
3098 }
3099
3100 port = netdev_priv(dev);
3101
a5af6ad3 3102 mutex_init(&port->port_lock);
1acf2318
JBT		 3103 port->state = EHEA_PORT_DOWN;
3104 port->sig_comp_iv = sq_entries / 10;
3105
3106 port->adapter = adapter;
3107 port->netdev = dev;
3108 port->logical_port_id = logical_port_id;
3109
3110 port->msg_enable = netif_msg_init(msg_level, EHEA_MSG_DEFAULT);
3111
3112 port->mc_list = kzalloc(sizeof(struct ehea_mc_list), GFP_KERNEL);
3113 if (!port->mc_list) {
3114 ret = -ENOMEM;
3115 goto out_free_ethdev;
3116 }
3117
3118 INIT_LIST_HEAD(&port->mc_list->list);
3119
3120 ret = ehea_sense_port_attr(port);
3121 if (ret)
3122 goto out_free_mc_list;
3123
3124 port_dev = ehea_register_port(port, dn);
3125 if (!port_dev)
3126 goto out_free_mc_list;
3127
3128 SET_NETDEV_DEV(dev, port_dev);
7a291083
JBT		 3129
3130 /* initialize net_device structure */
7a291083
JBT		 3131 memcpy(dev->dev_addr, &port->mac_addr, ETH_ALEN);
3132
086c1b2c
TK		 3133 dev->netdev_ops = &ehea_netdev_ops;
3134 ehea_set_ethtool_ops(dev);
3135
7a291083 3136 dev->features = NETIF_F_SG | NETIF_F_FRAGLIST | NETIF_F_TSO
dc01c447 3137 | NETIF_F_HIGHDMA | NETIF_F_IP_CSUM | NETIF_F_HW_VLAN_TX
7a291083
JBT		 3138 | NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_FILTER
3139 | NETIF_F_LLTX;
3140 dev->tx_timeout = &ehea_tx_watchdog;
3141 dev->watchdog_timeo = EHEA_WATCH_DOG_TIMEOUT;
3142
c4028958 3143 INIT_WORK(&port->reset_task, ehea_reset_port);
7a291083
JBT		 3144
3145 ret = register_netdev(dev);
3146 if (ret) {
3147 ehea_error("register_netdev failed. ret=%d", ret);
21eee2dd 3148 goto out_unreg_port;
7a291083
JBT		 3149 }
3150
d4dc4ec9
JBT		 3151 port->lro_max_aggr = lro_max_aggr;
3152
1acf2318 3153 ret = ehea_get_jumboframe_status(port, &jumbo);
e542aa6b 3154 if (ret)
1acf2318
JBT		 3155 ehea_error("failed determining jumbo frame status for %s",
3156 port->netdev->name);
3157
9c750b7d
TK		 3158 ehea_info("%s: Jumbo frames are %sabled", dev->name,
3159 jumbo == 1 ? "en" : "dis");
3160
44c82152
TK		 3161 adapter->active_ports++;
3162
1acf2318 3163 return port;
7a291083 3164
1acf2318
JBT		 3165out_unreg_port:
3166 ehea_unregister_port(port);
3167
3168out_free_mc_list:
7a291083 3169 kfree(port->mc_list);
1acf2318
JBT		 3170
3171out_free_ethdev:
3172 free_netdev(dev);
3173
3174out_err:
3175 ehea_error("setting up logical port with id=%d failed, ret=%d",
3176 logical_port_id, ret);
3177 return NULL;
3178}
3179
3180static void ehea_shutdown_single_port(struct ehea_port *port)
3181{
7fb1c2ac 3182 struct ehea_adapter *adapter = port->adapter;
1acf2318
JBT		 3183 unregister_netdev(port->netdev);
3184 ehea_unregister_port(port);
3185 kfree(port->mc_list);
3186 free_netdev(port->netdev);
7fb1c2ac 3187 adapter->active_ports--;
7a291083
JBT		 3188}
3189
3190static int ehea_setup_ports(struct ehea_adapter *adapter)
3191{
1acf2318
JBT		 3192 struct device_node *lhea_dn;
3193 struct device_node *eth_dn = NULL;
d1d25aab 3194
9f9a3b8a 3195 const u32 *dn_log_port_id;
1acf2318
JBT		 3196 int i = 0;
3197
6b08f3ae 3198 lhea_dn = adapter->ofdev->node;
1eef4e04 3199 while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) {
e542aa6b 3200
40cd3a45 3201 dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no",
d1d25aab 3202 NULL);
1acf2318
JBT		 3203 if (!dn_log_port_id) {
3204 ehea_error("bad device node: eth_dn name=%s",
3205 eth_dn->full_name);
3206 continue;
3207 }
7a291083 3208
1211bb6d
TK		 3209 if (ehea_add_adapter_mr(adapter)) {
3210 ehea_error("creating MR failed");
3211 of_node_put(eth_dn);
3212 return -EIO;
3213 }
3214
1acf2318
JBT		 3215 adapter->port[i] = ehea_setup_single_port(adapter,
3216 *dn_log_port_id,
3217 eth_dn);
7a291083 3218 if (adapter->port[i])
1acf2318 3219 ehea_info("%s -> logical port id #%d",
e542aa6b 3220 adapter->port[i]->netdev->name,
1acf2318 3221 *dn_log_port_id);
1211bb6d
TK		 3222 else
3223 ehea_remove_adapter_mr(adapter);
3224
1acf2318 3225 i++;
1eef4e04 3226 };
1211bb6d 3227 return 0;
1acf2318
JBT		 3228}
3229
e542aa6b
JBT		 3230static struct device_node *ehea_get_eth_dn(struct ehea_adapter *adapter,
3231 u32 logical_port_id)
1acf2318
JBT		 3232{
3233 struct device_node *lhea_dn;
3234 struct device_node *eth_dn = NULL;
9f9a3b8a 3235 const u32 *dn_log_port_id;
1acf2318 3236
6b08f3ae 3237 lhea_dn = adapter->ofdev->node;
1eef4e04 3238 while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) {
e542aa6b 3239
40cd3a45 3240 dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no",
d1d25aab 3241 NULL);
1acf2318
JBT		 3242 if (dn_log_port_id)
3243 if (*dn_log_port_id == logical_port_id)
3244 return eth_dn;
1eef4e04 3245 };
1acf2318
JBT		 3246
3247 return NULL;
3248}
3249
3250static ssize_t ehea_probe_port(struct device *dev,
3251 struct device_attribute *attr,
3252 const char *buf, size_t count)
3253{
3254 struct ehea_adapter *adapter = dev->driver_data;
3255 struct ehea_port *port;
3256 struct device_node *eth_dn = NULL;
3257 int i;
3258
3259 u32 logical_port_id;
3260
a8e34fda 3261 sscanf(buf, "%d", &logical_port_id);
1acf2318
JBT		 3262
3263 port = ehea_get_port(adapter, logical_port_id);
3264
3265 if (port) {
3266 ehea_info("adding port with logical port id=%d failed. port "
3267 "already configured as %s.", logical_port_id,
3268 port->netdev->name);
3269 return -EINVAL;
7a291083 3270 }
e542aa6b 3271
1acf2318 3272 eth_dn = ehea_get_eth_dn(adapter, logical_port_id);
7a291083 3273
1acf2318
JBT		 3274 if (!eth_dn) {
3275 ehea_info("no logical port with id %d found", logical_port_id);
3276 return -EINVAL;
3277 }
e542aa6b 3278
1211bb6d
TK		 3279 if (ehea_add_adapter_mr(adapter)) {
3280 ehea_error("creating MR failed");
3281 return -EIO;
3282 }
3283
1acf2318 3284 port = ehea_setup_single_port(adapter, logical_port_id, eth_dn);
7a291083 3285
1eef4e04
JBT		 3286 of_node_put(eth_dn);
3287
1acf2318 3288 if (port) {
508d2b5d 3289 for (i = 0; i < EHEA_MAX_PORTS; i++)
1acf2318
JBT		 3290 if (!adapter->port[i]) {
3291 adapter->port[i] = port;
3292 break;
3293 }
7a291083 3294
1acf2318
JBT		 3295 ehea_info("added %s (logical port id=%d)", port->netdev->name,
3296 logical_port_id);
1211bb6d
TK		 3297 } else {
3298 ehea_remove_adapter_mr(adapter);
e542aa6b 3299 return -EIO;
1211bb6d 3300 }
7a291083 3301
1acf2318
JBT		 3302 return (ssize_t) count;
3303}
3304
3305static ssize_t ehea_remove_port(struct device *dev,
3306 struct device_attribute *attr,
3307 const char *buf, size_t count)
3308{
3309 struct ehea_adapter *adapter = dev->driver_data;
3310 struct ehea_port *port;
3311 int i;
3312 u32 logical_port_id;
3313
a8e34fda 3314 sscanf(buf, "%d", &logical_port_id);
1acf2318
JBT		 3315
3316 port = ehea_get_port(adapter, logical_port_id);
3317
3318 if (port) {
3319 ehea_info("removed %s (logical port id=%d)", port->netdev->name,
3320 logical_port_id);
3321
3322 ehea_shutdown_single_port(port);
3323
508d2b5d 3324 for (i = 0; i < EHEA_MAX_PORTS; i++)
1acf2318
JBT		 3325 if (adapter->port[i] == port) {
3326 adapter->port[i] = NULL;
3327 break;
3328 }
3329 } else {
3330 ehea_error("removing port with logical port id=%d failed. port "
3331 "not configured.", logical_port_id);
3332 return -EINVAL;
3333 }
3334
1211bb6d
TK		 3335 ehea_remove_adapter_mr(adapter);
3336
1acf2318
JBT		 3337 return (ssize_t) count;
3338}
3339
3340static DEVICE_ATTR(probe_port, S_IWUSR, NULL, ehea_probe_port);
3341static DEVICE_ATTR(remove_port, S_IWUSR, NULL, ehea_remove_port);
3342
6b08f3ae 3343int ehea_create_device_sysfs(struct of_device *dev)
1acf2318 3344{
6b08f3ae 3345 int ret = device_create_file(&dev->dev, &dev_attr_probe_port);
1acf2318
JBT		 3346 if (ret)
3347 goto out;
3348
6b08f3ae 3349 ret = device_create_file(&dev->dev, &dev_attr_remove_port);
1acf2318 3350out:
7a291083
JBT		 3351 return ret;
3352}
3353
6b08f3ae 3354void ehea_remove_device_sysfs(struct of_device *dev)
1acf2318 3355{
6b08f3ae
JF		 3356 device_remove_file(&dev->dev, &dev_attr_probe_port);
3357 device_remove_file(&dev->dev, &dev_attr_remove_port);
1acf2318
JBT		 3358}
3359
6b08f3ae 3360static int __devinit ehea_probe_adapter(struct of_device *dev,
1acf2318 3361 const struct of_device_id *id)
7a291083
JBT		 3362{
3363 struct ehea_adapter *adapter;
9f9a3b8a 3364 const u64 *adapter_handle;
7a291083
JBT		 3365 int ret;
3366
6b08f3ae 3367 if (!dev || !dev->node) {
1eef4e04
JBT		 3368 ehea_error("Invalid ibmebus device probed");
3369 return -EINVAL;
3370 }
9f71a568 3371 mutex_lock(&ehea_fw_handles.lock);
1eef4e04 3372
7a291083
JBT		 3373 adapter = kzalloc(sizeof(*adapter), GFP_KERNEL);
3374 if (!adapter) {
3375 ret = -ENOMEM;
6b08f3ae 3376 dev_err(&dev->dev, "no mem for ehea_adapter\n");
7a291083
JBT		 3377 goto out;
3378 }
3379
44c82152
TK		 3380 list_add(&adapter->list, &adapter_list);
3381
6b08f3ae 3382 adapter->ofdev = dev;
1acf2318 3383
6b08f3ae 3384 adapter_handle = of_get_property(dev->node, "ibm,hea-handle",
d1d25aab 3385 NULL);
061bf3cd
TK		 3386 if (adapter_handle)
3387 adapter->handle = *adapter_handle;
3388
3389 if (!adapter->handle) {
6b08f3ae
JF		 3390 dev_err(&dev->dev, "failed getting handle for adapter"
3391 " '%s'\n", dev->node->full_name);
7a291083
JBT		 3392 ret = -ENODEV;
3393 goto out_free_ad;
3394 }
3395
7a291083
JBT		 3396 adapter->pd = EHEA_PD_ID;
3397
6b08f3ae 3398 dev->dev.driver_data = adapter;
7a291083 3399
7a291083
JBT		 3400
3401 /* initialize adapter and ports */
3402 /* get adapter properties */
3403 ret = ehea_sense_adapter_attr(adapter);
3404 if (ret) {
898eb71c 3405 dev_err(&dev->dev, "sense_adapter_attr failed: %d\n", ret);
1211bb6d 3406 goto out_free_ad;
7a291083 3407 }
7a291083
JBT		 3408
3409 adapter->neq = ehea_create_eq(adapter,
3410 EHEA_NEQ, EHEA_MAX_ENTRIES_EQ, 1);
3411 if (!adapter->neq) {
1eef4e04 3412 ret = -EIO;
898eb71c 3413 dev_err(&dev->dev, "NEQ creation failed\n");
1211bb6d 3414 goto out_free_ad;
7a291083
JBT		 3415 }
3416
3417 tasklet_init(&adapter->neq_tasklet, ehea_neq_tasklet,
3418 (unsigned long)adapter);
3419
6b08f3ae 3420 ret = ibmebus_request_irq(adapter->neq->attr.ist1,
38515e90 3421 ehea_interrupt_neq, IRQF_DISABLED,
7a291083
JBT		 3422 "ehea_neq", adapter);
3423 if (ret) {
898eb71c 3424 dev_err(&dev->dev, "requesting NEQ IRQ failed\n");
7a291083
JBT		 3425 goto out_kill_eq;
3426 }
3427
1eef4e04
JBT		 3428 ret = ehea_create_device_sysfs(dev);
3429 if (ret)
3bf76b81 3430 goto out_free_irq;
1acf2318 3431
7a291083
JBT		 3432 ret = ehea_setup_ports(adapter);
3433 if (ret) {
898eb71c 3434 dev_err(&dev->dev, "setup_ports failed\n");
1acf2318 3435 goto out_rem_dev_sysfs;
7a291083
JBT		 3436 }
3437
3438 ret = 0;
3439 goto out;
3440
1acf2318
JBT		 3441out_rem_dev_sysfs:
3442 ehea_remove_device_sysfs(dev);
3443
7a291083 3444out_free_irq:
6b08f3ae 3445 ibmebus_free_irq(adapter->neq->attr.ist1, adapter);
7a291083
JBT		 3446
3447out_kill_eq:
3448 ehea_destroy_eq(adapter->neq);
3449
7a291083
JBT		 3450out_free_ad:
3451 kfree(adapter);
21eee2dd 3452
7a291083 3453out:
21eee2dd 3454 ehea_update_firmware_handles();
9f71a568 3455 mutex_unlock(&ehea_fw_handles.lock);
7a291083
JBT		 3456 return ret;
3457}
3458
6b08f3ae 3459static int __devexit ehea_remove(struct of_device *dev)
7a291083 3460{
6b08f3ae 3461 struct ehea_adapter *adapter = dev->dev.driver_data;
7a291083
JBT		 3462 int i;
3463
1acf2318 3464 for (i = 0; i < EHEA_MAX_PORTS; i++)
7a291083
JBT		 3465 if (adapter->port[i]) {
3466 ehea_shutdown_single_port(adapter->port[i]);
3467 adapter->port[i] = NULL;
3468 }
1acf2318
JBT		 3469
3470 ehea_remove_device_sysfs(dev);
3471
3bf76b81 3472 flush_scheduled_work();
7a291083 3473
9f71a568 3474 mutex_lock(&ehea_fw_handles.lock);
21eee2dd 3475
6b08f3ae 3476 ibmebus_free_irq(adapter->neq->attr.ist1, adapter);
d4150a27 3477 tasklet_kill(&adapter->neq_tasklet);
7a291083
JBT		 3478
3479 ehea_destroy_eq(adapter->neq);
1211bb6d 3480 ehea_remove_adapter_mr(adapter);
44c82152 3481 list_del(&adapter->list);
7a291083 3482 kfree(adapter);
44c82152 3483
21eee2dd 3484 ehea_update_firmware_handles();
9f71a568 3485 mutex_unlock(&ehea_fw_handles.lock);
21eee2dd 3486
7a291083
JBT		 3487 return 0;
3488}
3489
21eee2dd
TK		 3490void ehea_crash_handler(void)
3491{
3492 int i;
3493
3494 if (ehea_fw_handles.arr)
3495 for (i = 0; i < ehea_fw_handles.num_entries; i++)
3496 ehea_h_free_resource(ehea_fw_handles.arr[i].adh,
3497 ehea_fw_handles.arr[i].fwh,
3498 FORCE_FREE);
3499
3500 if (ehea_bcmc_regs.arr)
3501 for (i = 0; i < ehea_bcmc_regs.num_entries; i++)
3502 ehea_h_reg_dereg_bcmc(ehea_bcmc_regs.arr[i].adh,
3503 ehea_bcmc_regs.arr[i].port_id,
3504 ehea_bcmc_regs.arr[i].reg_type,
3505 ehea_bcmc_regs.arr[i].macaddr,
3506 0, H_DEREG_BCMC);
3507}
3508
48cfb14f
HH		 3509static int ehea_mem_notifier(struct notifier_block *nb,
3510 unsigned long action, void *data)
3511{
d4f12daf 3512 struct memory_notify *arg = data;
48cfb14f 3513 switch (action) {
d4f12daf
HH		 3514 case MEM_CANCEL_OFFLINE:
3515 ehea_info("memory offlining canceled");
3516 /* Readd canceled memory block */
3517 case MEM_ONLINE:
3518 ehea_info("memory is going online");
3519 if (ehea_add_sect_bmap(arg->start_pfn, arg->nr_pages))
3520 return NOTIFY_BAD;
3521 ehea_rereg_mrs(NULL);
3522 break;
3523 case MEM_GOING_OFFLINE:
3524 ehea_info("memory is going offline");
3525 if (ehea_rem_sect_bmap(arg->start_pfn, arg->nr_pages))
3526 return NOTIFY_BAD;
48cfb14f
HH		 3527 ehea_rereg_mrs(NULL);
3528 break;
3529 default:
3530 break;
3531 }
3532 return NOTIFY_OK;
3533}
3534
3535static struct notifier_block ehea_mem_nb = {
3536 .notifier_call = ehea_mem_notifier,
3537};
3538
2a6f4e49
JBT		 3539static int ehea_reboot_notifier(struct notifier_block *nb,
3540 unsigned long action, void *unused)
3541{
3542 if (action == SYS_RESTART) {
3543 ehea_info("Reboot: freeing all eHEA resources");
3544 ibmebus_unregister_driver(&ehea_driver);
3545 }
3546 return NOTIFY_DONE;
3547}
3548
3549static struct notifier_block ehea_reboot_nb = {
508d2b5d 3550 .notifier_call = ehea_reboot_notifier,
2a6f4e49
JBT		 3551};
3552
7a291083
JBT		 3553static int check_module_parm(void)
3554{
3555 int ret = 0;
3556
3557 if ((rq1_entries < EHEA_MIN_ENTRIES_QP) ||
3558 (rq1_entries > EHEA_MAX_ENTRIES_RQ1)) {
3559 ehea_info("Bad parameter: rq1_entries");
3560 ret = -EINVAL;
3561 }
3562 if ((rq2_entries < EHEA_MIN_ENTRIES_QP) ||
3563 (rq2_entries > EHEA_MAX_ENTRIES_RQ2)) {
3564 ehea_info("Bad parameter: rq2_entries");
3565 ret = -EINVAL;
3566 }
3567 if ((rq3_entries < EHEA_MIN_ENTRIES_QP) ||
3568 (rq3_entries > EHEA_MAX_ENTRIES_RQ3)) {
3569 ehea_info("Bad parameter: rq3_entries");
3570 ret = -EINVAL;
3571 }
3572 if ((sq_entries < EHEA_MIN_ENTRIES_QP) ||
3573 (sq_entries > EHEA_MAX_ENTRIES_SQ)) {
3574 ehea_info("Bad parameter: sq_entries");
3575 ret = -EINVAL;
3576 }
3577
3578 return ret;
3579}
3580
4c3ca4da
JBT		 3581static ssize_t ehea_show_capabilities(struct device_driver *drv,
3582 char *buf)
3583{
3584 return sprintf(buf, "%d", EHEA_CAPABILITIES);
3585}
3586
3587static DRIVER_ATTR(capabilities, S_IRUSR | S_IRGRP | S_IROTH,
3588 ehea_show_capabilities, NULL);
3589
7a291083
JBT		 3590int __init ehea_module_init(void)
3591{
3592 int ret;
3593
3594 printk(KERN_INFO "IBM eHEA ethernet device driver (Release %s)\n",
3595 DRV_VERSION);
3596
44c82152
TK		 3597
3598 INIT_WORK(&ehea_rereg_mr_task, ehea_rereg_mrs);
21eee2dd
TK		 3599 memset(&ehea_fw_handles, 0, sizeof(ehea_fw_handles));
3600 memset(&ehea_bcmc_regs, 0, sizeof(ehea_bcmc_regs));
3601
9f71a568 3602 mutex_init(&ehea_fw_handles.lock);
5c2cec14 3603 spin_lock_init(&ehea_bcmc_regs.lock);
44c82152 3604
7a291083
JBT		 3605 ret = check_module_parm();
3606 if (ret)
3607 goto out;
44c82152
TK		 3608
3609 ret = ehea_create_busmap();
3610 if (ret)
3611 goto out;
3612
21eee2dd
TK		 3613 ret = register_reboot_notifier(&ehea_reboot_nb);
3614 if (ret)
3615 ehea_info("failed registering reboot notifier");
3616
48cfb14f
HH		 3617 ret = register_memory_notifier(&ehea_mem_nb);
3618 if (ret)
3619 ehea_info("failed registering memory remove notifier");
3620
21eee2dd
TK		 3621 ret = crash_shutdown_register(&ehea_crash_handler);
3622 if (ret)
3623 ehea_info("failed registering crash handler");
2a6f4e49 3624
7a291083 3625 ret = ibmebus_register_driver(&ehea_driver);
4c3ca4da 3626 if (ret) {
7a291083 3627 ehea_error("failed registering eHEA device driver on ebus");
21eee2dd 3628 goto out2;
4c3ca4da
JBT		 3629 }
3630
3631 ret = driver_create_file(&ehea_driver.driver,
3632 &driver_attr_capabilities);
3633 if (ret) {
3634 ehea_error("failed to register capabilities attribute, ret=%d",
3635 ret);
21eee2dd 3636 goto out3;
4c3ca4da 3637 }
7a291083 3638
21eee2dd
TK		 3639 return ret;
3640
3641out3:
3642 ibmebus_unregister_driver(&ehea_driver);
3643out2:
48cfb14f 3644 unregister_memory_notifier(&ehea_mem_nb);
21eee2dd
TK		 3645 unregister_reboot_notifier(&ehea_reboot_nb);
3646 crash_shutdown_unregister(&ehea_crash_handler);
7a291083
JBT		 3647out:
3648 return ret;
3649}
3650
3651static void __exit ehea_module_exit(void)
3652{
21eee2dd
TK		 3653 int ret;
3654
3bf76b81 3655 flush_scheduled_work();
4c3ca4da 3656 driver_remove_file(&ehea_driver.driver, &driver_attr_capabilities);
7a291083 3657 ibmebus_unregister_driver(&ehea_driver);
2a6f4e49 3658 unregister_reboot_notifier(&ehea_reboot_nb);
21eee2dd
TK		 3659 ret = crash_shutdown_unregister(&ehea_crash_handler);
3660 if (ret)
3661 ehea_info("failed unregistering crash handler");
48cfb14f 3662 unregister_memory_notifier(&ehea_mem_nb);
21eee2dd
TK		 3663 kfree(ehea_fw_handles.arr);
3664 kfree(ehea_bcmc_regs.arr);
44c82152 3665 ehea_destroy_busmap();
7a291083
JBT		 3666}
3667
3668module_init(ehea_module_init);
3669module_exit(ehea_module_exit);
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