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ne2k-pci: Do not register device until initialized.
[linux-2.6-block.git] / drivers / net / ehea / ehea_main.c
CommitLineData
7a291083
JBT		 1/*
2 * linux/drivers/net/ehea/ehea_main.c
3 *
4 * eHEA ethernet device driver for IBM eServer System p
5 *
6 * (C) Copyright IBM Corp. 2006
7 *
8 * Authors:
508d2b5d
DM		 9 * Christoph Raisch <raisch@de.ibm.com>
10 * Jan-Bernd Themann <themann@de.ibm.com>
11 * Thomas Klein <tklein@de.ibm.com>
7a291083
JBT		 12 *
13 *
14 * This program is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License as published by
16 * the Free Software Foundation; either version 2, or (at your option)
17 * any later version.
18 *
19 * This program is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU General Public License for more details.
23 *
24 * You should have received a copy of the GNU General Public License
25 * along with this program; if not, write to the Free Software
26 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
27 */
28
29#include <linux/in.h>
30#include <linux/ip.h>
31#include <linux/tcp.h>
32#include <linux/udp.h>
33#include <linux/if.h>
34#include <linux/list.h>
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 */
52e21b1b
JBT		 158 mutex_lock(&ehea_fw_handles.lock);
159
21eee2dd
TK		 160 list_for_each_entry(adapter, &adapter_list, list) {
161 num_adapters++;
162
163 for (k = 0; k < EHEA_MAX_PORTS; k++) {
164 struct ehea_port *port = adapter->port[k];
165
166 if (!port || (port->state != EHEA_PORT_UP))
167 continue;
168
169 num_ports++;
170 num_portres += port->num_def_qps + port->num_add_tx_qps;
171 }
172 }
173
174 num_fw_handles = num_adapters * EHEA_NUM_ADAPTER_FW_HANDLES +
175 num_ports * EHEA_NUM_PORT_FW_HANDLES +
176 num_portres * EHEA_NUM_PORTRES_FW_HANDLES;
177
178 if (num_fw_handles) {
179 arr = kzalloc(num_fw_handles * sizeof(*arr), GFP_KERNEL);
180 if (!arr)
52e21b1b 181 goto out; /* Keep the existing array */
21eee2dd
TK		 182 } else
183 goto out_update;
184
185 list_for_each_entry(adapter, &adapter_list, list) {
52e21b1b
JBT		 186 if (num_adapters == 0)
187 break;
188
21eee2dd
TK		 189 for (k = 0; k < EHEA_MAX_PORTS; k++) {
190 struct ehea_port *port = adapter->port[k];
191
52e21b1b
JBT		 192 if (!port || (port->state != EHEA_PORT_UP)
193 || (num_ports == 0))
21eee2dd
TK		 194 continue;
195
196 for (l = 0;
197 l < port->num_def_qps + port->num_add_tx_qps;
198 l++) {
199 struct ehea_port_res *pr = &port->port_res[l];
200
201 arr[i].adh = adapter->handle;
202 arr[i++].fwh = pr->qp->fw_handle;
203 arr[i].adh = adapter->handle;
204 arr[i++].fwh = pr->send_cq->fw_handle;
205 arr[i].adh = adapter->handle;
206 arr[i++].fwh = pr->recv_cq->fw_handle;
207 arr[i].adh = adapter->handle;
208 arr[i++].fwh = pr->eq->fw_handle;
209 arr[i].adh = adapter->handle;
210 arr[i++].fwh = pr->send_mr.handle;
211 arr[i].adh = adapter->handle;
212 arr[i++].fwh = pr->recv_mr.handle;
213 }
214 arr[i].adh = adapter->handle;
215 arr[i++].fwh = port->qp_eq->fw_handle;
52e21b1b 216 num_ports--;
21eee2dd
TK		 217 }
218
219 arr[i].adh = adapter->handle;
220 arr[i++].fwh = adapter->neq->fw_handle;
221
222 if (adapter->mr.handle) {
223 arr[i].adh = adapter->handle;
224 arr[i++].fwh = adapter->mr.handle;
225 }
52e21b1b 226 num_adapters--;
21eee2dd
TK		 227 }
228
229out_update:
230 kfree(ehea_fw_handles.arr);
231 ehea_fw_handles.arr = arr;
232 ehea_fw_handles.num_entries = i;
52e21b1b
JBT		 233out:
234 mutex_unlock(&ehea_fw_handles.lock);
21eee2dd
TK		 235}
236
237static void ehea_update_bcmc_registrations(void)
238{
52e21b1b 239 unsigned long flags;
21eee2dd
TK		 240 struct ehea_bcmc_reg_entry *arr = NULL;
241 struct ehea_adapter *adapter;
242 struct ehea_mc_list *mc_entry;
243 int num_registrations = 0;
244 int i = 0;
245 int k;
246
52e21b1b
JBT		 247 spin_lock_irqsave(&ehea_bcmc_regs.lock, flags);
248
21eee2dd
TK		 249 /* Determine number of registrations */
250 list_for_each_entry(adapter, &adapter_list, list)
251 for (k = 0; k < EHEA_MAX_PORTS; k++) {
252 struct ehea_port *port = adapter->port[k];
253
254 if (!port || (port->state != EHEA_PORT_UP))
255 continue;
256
257 num_registrations += 2; /* Broadcast registrations */
258
259 list_for_each_entry(mc_entry, &port->mc_list->list,list)
260 num_registrations += 2;
261 }
262
263 if (num_registrations) {
5c2cec14 264 arr = kzalloc(num_registrations * sizeof(*arr), GFP_ATOMIC);
21eee2dd 265 if (!arr)
52e21b1b 266 goto out; /* Keep the existing array */
21eee2dd
TK		 267 } else
268 goto out_update;
269
270 list_for_each_entry(adapter, &adapter_list, list) {
271 for (k = 0; k < EHEA_MAX_PORTS; k++) {
272 struct ehea_port *port = adapter->port[k];
273
274 if (!port || (port->state != EHEA_PORT_UP))
275 continue;
276
52e21b1b
JBT		 277 if (num_registrations == 0)
278 goto out_update;
279
21eee2dd
TK		 280 arr[i].adh = adapter->handle;
281 arr[i].port_id = port->logical_port_id;
282 arr[i].reg_type = EHEA_BCMC_BROADCAST |
283 EHEA_BCMC_UNTAGGED;
284 arr[i++].macaddr = port->mac_addr;
285
286 arr[i].adh = adapter->handle;
287 arr[i].port_id = port->logical_port_id;
288 arr[i].reg_type = EHEA_BCMC_BROADCAST |
289 EHEA_BCMC_VLANID_ALL;
290 arr[i++].macaddr = port->mac_addr;
52e21b1b 291 num_registrations -= 2;
21eee2dd
TK		 292
293 list_for_each_entry(mc_entry,
294 &port->mc_list->list, list) {
52e21b1b
JBT		 295 if (num_registrations == 0)
296 goto out_update;
297
21eee2dd
TK		 298 arr[i].adh = adapter->handle;
299 arr[i].port_id = port->logical_port_id;
300 arr[i].reg_type = EHEA_BCMC_SCOPE_ALL |
301 EHEA_BCMC_MULTICAST |
302 EHEA_BCMC_UNTAGGED;
303 arr[i++].macaddr = mc_entry->macaddr;
304
305 arr[i].adh = adapter->handle;
306 arr[i].port_id = port->logical_port_id;
307 arr[i].reg_type = EHEA_BCMC_SCOPE_ALL |
308 EHEA_BCMC_MULTICAST |
309 EHEA_BCMC_VLANID_ALL;
310 arr[i++].macaddr = mc_entry->macaddr;
52e21b1b 311 num_registrations -= 2;
21eee2dd
TK		 312 }
313 }
314 }
315
316out_update:
317 kfree(ehea_bcmc_regs.arr);
318 ehea_bcmc_regs.arr = arr;
319 ehea_bcmc_regs.num_entries = i;
52e21b1b
JBT		 320out:
321 spin_unlock_irqrestore(&ehea_bcmc_regs.lock, flags);
21eee2dd
TK		 322}
323
7a291083
JBT		 324static struct net_device_stats *ehea_get_stats(struct net_device *dev)
325{
326 struct ehea_port *port = netdev_priv(dev);
327 struct net_device_stats *stats = &port->stats;
328 struct hcp_ehea_port_cb2 *cb2;
7393b87c 329 u64 hret, rx_packets, tx_packets;
7a291083
JBT		 330 int i;
331
332 memset(stats, 0, sizeof(*stats));
333
3faf2693 334 cb2 = (void *)get_zeroed_page(GFP_ATOMIC);
7a291083
JBT		 335 if (!cb2) {
336 ehea_error("no mem for cb2");
337 goto out;
338 }
339
340 hret = ehea_h_query_ehea_port(port->adapter->handle,
341 port->logical_port_id,
342 H_PORT_CB2, H_PORT_CB2_ALL, cb2);
343 if (hret != H_SUCCESS) {
344 ehea_error("query_ehea_port failed");
345 goto out_herr;
346 }
347
348 if (netif_msg_hw(port))
349 ehea_dump(cb2, sizeof(*cb2), "net_device_stats");
350
351 rx_packets = 0;
352 for (i = 0; i < port->num_def_qps; i++)
353 rx_packets += port->port_res[i].rx_packets;
354
7393b87c
TK		 355 tx_packets = 0;
356 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
357 tx_packets += port->port_res[i].tx_packets;
358
359 stats->tx_packets = tx_packets;
7a291083
JBT		 360 stats->multicast = cb2->rxmcp;
361 stats->rx_errors = cb2->rxuerr;
362 stats->rx_bytes = cb2->rxo;
363 stats->tx_bytes = cb2->txo;
364 stats->rx_packets = rx_packets;
365
366out_herr:
3faf2693 367 free_page((unsigned long)cb2);
7a291083
JBT		 368out:
369 return stats;
370}
371
372static void ehea_refill_rq1(struct ehea_port_res *pr, int index, int nr_of_wqes)
373{
374 struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
375 struct net_device *dev = pr->port->netdev;
376 int max_index_mask = pr->rq1_skba.len - 1;
2c69448b
JBT		 377 int fill_wqes = pr->rq1_skba.os_skbs + nr_of_wqes;
378 int adder = 0;
7a291083
JBT		 379 int i;
380
2c69448b
JBT		 381 pr->rq1_skba.os_skbs = 0;
382
383 if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) {
44fb3126
TK		 384 if (nr_of_wqes > 0)
385 pr->rq1_skba.index = index;
2c69448b 386 pr->rq1_skba.os_skbs = fill_wqes;
7a291083 387 return;
2c69448b 388 }
7a291083 389
2c69448b 390 for (i = 0; i < fill_wqes; i++) {
7a291083
JBT		 391 if (!skb_arr_rq1[index]) {
392 skb_arr_rq1[index] = netdev_alloc_skb(dev,
393 EHEA_L_PKT_SIZE);
394 if (!skb_arr_rq1[index]) {
2c69448b 395 pr->rq1_skba.os_skbs = fill_wqes - i;
7a291083
JBT		 396 break;
397 }
398 }
399 index--;
400 index &= max_index_mask;
2c69448b 401 adder++;
7a291083 402 }
2c69448b
JBT		 403
404 if (adder == 0)
405 return;
406
7a291083 407 /* Ring doorbell */
2c69448b 408 ehea_update_rq1a(pr->qp, adder);
7a291083
JBT		 409}
410
e2878806 411static void ehea_init_fill_rq1(struct ehea_port_res *pr, int nr_rq1a)
7a291083 412{
7a291083
JBT		 413 struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
414 struct net_device *dev = pr->port->netdev;
415 int i;
416
417 for (i = 0; i < pr->rq1_skba.len; i++) {
418 skb_arr_rq1[i] = netdev_alloc_skb(dev, EHEA_L_PKT_SIZE);
e2878806
TK		 419 if (!skb_arr_rq1[i])
420 break;
7a291083
JBT		 421 }
422 /* Ring doorbell */
423 ehea_update_rq1a(pr->qp, nr_rq1a);
7a291083
JBT		 424}
425
426static int ehea_refill_rq_def(struct ehea_port_res *pr,
427 struct ehea_q_skb_arr *q_skba, int rq_nr,
428 int num_wqes, int wqe_type, int packet_size)
429{
430 struct net_device *dev = pr->port->netdev;
431 struct ehea_qp *qp = pr->qp;
432 struct sk_buff **skb_arr = q_skba->arr;
433 struct ehea_rwqe *rwqe;
434 int i, index, max_index_mask, fill_wqes;
2c69448b 435 int adder = 0;
7a291083
JBT		 436 int ret = 0;
437
438 fill_wqes = q_skba->os_skbs + num_wqes;
2c69448b 439 q_skba->os_skbs = 0;
7a291083 440
2c69448b
JBT		 441 if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) {
442 q_skba->os_skbs = fill_wqes;
7a291083 443 return ret;
2c69448b 444 }
7a291083
JBT		 445
446 index = q_skba->index;
447 max_index_mask = q_skba->len - 1;
448 for (i = 0; i < fill_wqes; i++) {
2c69448b 449 u64 tmp_addr;
7a291083
JBT		 450 struct sk_buff *skb = netdev_alloc_skb(dev, packet_size);
451 if (!skb) {
7a291083 452 q_skba->os_skbs = fill_wqes - i;
e2878806
TK		 453 if (q_skba->os_skbs == q_skba->len - 2) {
454 ehea_info("%s: rq%i ran dry - no mem for skb",
455 pr->port->netdev->name, rq_nr);
456 ret = -ENOMEM;
457 }
7a291083
JBT		 458 break;
459 }
460 skb_reserve(skb, NET_IP_ALIGN);
461
462 skb_arr[index] = skb;
2c69448b
JBT		 463 tmp_addr = ehea_map_vaddr(skb->data);
464 if (tmp_addr == -1) {
465 dev_kfree_skb(skb);
466 q_skba->os_skbs = fill_wqes - i;
467 ret = 0;
468 break;
469 }
7a291083
JBT		 470
471 rwqe = ehea_get_next_rwqe(qp, rq_nr);
472 rwqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, wqe_type)
d1d25aab 473 | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, index);
7a291083 474 rwqe->sg_list[0].l_key = pr->recv_mr.lkey;
2c69448b 475 rwqe->sg_list[0].vaddr = tmp_addr;
7a291083
JBT		 476 rwqe->sg_list[0].len = packet_size;
477 rwqe->data_segments = 1;
478
479 index++;
480 index &= max_index_mask;
2c69448b 481 adder++;
7a291083 482 }
44c82152 483
7a291083 484 q_skba->index = index;
2c69448b
JBT		 485 if (adder == 0)
486 goto out;
7a291083
JBT		 487
488 /* Ring doorbell */
489 iosync();
490 if (rq_nr == 2)
2c69448b 491 ehea_update_rq2a(pr->qp, adder);
7a291083 492 else
2c69448b 493 ehea_update_rq3a(pr->qp, adder);
44c82152 494out:
7a291083
JBT		 495 return ret;
496}
497
498
499static int ehea_refill_rq2(struct ehea_port_res *pr, int nr_of_wqes)
500{
501 return ehea_refill_rq_def(pr, &pr->rq2_skba, 2,
502 nr_of_wqes, EHEA_RWQE2_TYPE,
503 EHEA_RQ2_PKT_SIZE + NET_IP_ALIGN);
504}
505
506
507static int ehea_refill_rq3(struct ehea_port_res *pr, int nr_of_wqes)
508{
509 return ehea_refill_rq_def(pr, &pr->rq3_skba, 3,
510 nr_of_wqes, EHEA_RWQE3_TYPE,
511 EHEA_MAX_PACKET_SIZE + NET_IP_ALIGN);
512}
513
514static inline int ehea_check_cqe(struct ehea_cqe *cqe, int *rq_num)
515{
516 *rq_num = (cqe->type & EHEA_CQE_TYPE_RQ) >> 5;
517 if ((cqe->status & EHEA_CQE_STAT_ERR_MASK) == 0)
518 return 0;
519 if (((cqe->status & EHEA_CQE_STAT_ERR_TCP) != 0) &&
520 (cqe->header_length == 0))
521 return 0;
522 return -EINVAL;
523}
524
525static inline void ehea_fill_skb(struct net_device *dev,
526 struct sk_buff *skb, struct ehea_cqe *cqe)
527{
528 int length = cqe->num_bytes_transfered - 4; /*remove CRC */
529
530 skb_put(skb, length);
531 skb->ip_summed = CHECKSUM_UNNECESSARY;
532 skb->protocol = eth_type_trans(skb, dev);
533}
534
535static inline struct sk_buff *get_skb_by_index(struct sk_buff **skb_array,
536 int arr_len,
537 struct ehea_cqe *cqe)
538{
539 int skb_index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, cqe->wr_id);
540 struct sk_buff *skb;
541 void *pref;
542 int x;
543
544 x = skb_index + 1;
545 x &= (arr_len - 1);
546
547 pref = skb_array[x];
548 prefetchw(pref);
549 prefetchw(pref + EHEA_CACHE_LINE);
550
551 pref = (skb_array[x]->data);
552 prefetch(pref);
553 prefetch(pref + EHEA_CACHE_LINE);
554 prefetch(pref + EHEA_CACHE_LINE * 2);
555 prefetch(pref + EHEA_CACHE_LINE * 3);
556 skb = skb_array[skb_index];
557 skb_array[skb_index] = NULL;
558 return skb;
559}
560
561static inline struct sk_buff *get_skb_by_index_ll(struct sk_buff **skb_array,
562 int arr_len, int wqe_index)
563{
564 struct sk_buff *skb;
565 void *pref;
566 int x;
567
568 x = wqe_index + 1;
569 x &= (arr_len - 1);
570
571 pref = skb_array[x];
572 prefetchw(pref);
573 prefetchw(pref + EHEA_CACHE_LINE);
574
575 pref = (skb_array[x]->data);
576 prefetchw(pref);
577 prefetchw(pref + EHEA_CACHE_LINE);
578
579 skb = skb_array[wqe_index];
580 skb_array[wqe_index] = NULL;
581 return skb;
582}
583
584static int ehea_treat_poll_error(struct ehea_port_res *pr, int rq,
585 struct ehea_cqe *cqe, int *processed_rq2,
586 int *processed_rq3)
587{
588 struct sk_buff *skb;
589
acbddb59
JBT		 590 if (cqe->status & EHEA_CQE_STAT_ERR_TCP)
591 pr->p_stats.err_tcp_cksum++;
592 if (cqe->status & EHEA_CQE_STAT_ERR_IP)
593 pr->p_stats.err_ip_cksum++;
594 if (cqe->status & EHEA_CQE_STAT_ERR_CRC)
595 pr->p_stats.err_frame_crc++;
596
7a291083
JBT		 597 if (rq == 2) {
598 *processed_rq2 += 1;
599 skb = get_skb_by_index(pr->rq2_skba.arr, pr->rq2_skba.len, cqe);
600 dev_kfree_skb(skb);
601 } else if (rq == 3) {
602 *processed_rq3 += 1;
603 skb = get_skb_by_index(pr->rq3_skba.arr, pr->rq3_skba.len, cqe);
604 dev_kfree_skb(skb);
605 }
606
607 if (cqe->status & EHEA_CQE_STAT_FAT_ERR_MASK) {
58dd8258
TK		 608 if (netif_msg_rx_err(pr->port)) {
609 ehea_error("Critical receive error for QP %d. "
610 "Resetting port.", pr->qp->init_attr.qp_nr);
611 ehea_dump(cqe, sizeof(*cqe), "CQE");
612 }
2f69ae01 613 ehea_schedule_port_reset(pr->port);
7a291083
JBT		 614 return 1;
615 }
616
617 return 0;
618}
619
d4dc4ec9
JBT		 620static int get_skb_hdr(struct sk_buff *skb, void **iphdr,
621 void **tcph, u64 *hdr_flags, void *priv)
622{
623 struct ehea_cqe *cqe = priv;
624 unsigned int ip_len;
625 struct iphdr *iph;
626
627 /* non tcp/udp packets */
628 if (!cqe->header_length)
629 return -1;
630
631 /* non tcp packet */
632 skb_reset_network_header(skb);
633 iph = ip_hdr(skb);
634 if (iph->protocol != IPPROTO_TCP)
635 return -1;
636
637 ip_len = ip_hdrlen(skb);
638 skb_set_transport_header(skb, ip_len);
639 *tcph = tcp_hdr(skb);
640
641 /* check if ip header and tcp header are complete */
3ff2cd23 642 if (ntohs(iph->tot_len) < ip_len + tcp_hdrlen(skb))
d4dc4ec9
JBT		 643 return -1;
644
645 *hdr_flags = LRO_IPV4 | LRO_TCP;
646 *iphdr = iph;
647
648 return 0;
649}
650
651static void ehea_proc_skb(struct ehea_port_res *pr, struct ehea_cqe *cqe,
652 struct sk_buff *skb)
653{
654 int vlan_extracted = (cqe->status & EHEA_CQE_VLAN_TAG_XTRACT)
655 && pr->port->vgrp;
656
657 if (use_lro) {
658 if (vlan_extracted)
659 lro_vlan_hwaccel_receive_skb(&pr->lro_mgr, skb,
660 pr->port->vgrp,
661 cqe->vlan_tag,
662 cqe);
663 else
664 lro_receive_skb(&pr->lro_mgr, skb, cqe);
665 } else {
666 if (vlan_extracted)
667 vlan_hwaccel_receive_skb(skb, pr->port->vgrp,
668 cqe->vlan_tag);
669 else
670 netif_receive_skb(skb);
671 }
672}
673
bea3348e
SH		 674static int ehea_proc_rwqes(struct net_device *dev,
675 struct ehea_port_res *pr,
676 int budget)
7a291083 677{
18604c54 678 struct ehea_port *port = pr->port;
7a291083
JBT		 679 struct ehea_qp *qp = pr->qp;
680 struct ehea_cqe *cqe;
681 struct sk_buff *skb;
682 struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
683 struct sk_buff **skb_arr_rq2 = pr->rq2_skba.arr;
684 struct sk_buff **skb_arr_rq3 = pr->rq3_skba.arr;
685 int skb_arr_rq1_len = pr->rq1_skba.len;
686 int skb_arr_rq2_len = pr->rq2_skba.len;
687 int skb_arr_rq3_len = pr->rq3_skba.len;
688 int processed, processed_rq1, processed_rq2, processed_rq3;
bea3348e 689 int wqe_index, last_wqe_index, rq, port_reset;
7a291083
JBT		 690
691 processed = processed_rq1 = processed_rq2 = processed_rq3 = 0;
692 last_wqe_index = 0;
7a291083 693
7a291083 694 cqe = ehea_poll_rq1(qp, &wqe_index);
bea3348e 695 while ((processed < budget) && cqe) {
7a291083
JBT		 696 ehea_inc_rq1(qp);
697 processed_rq1++;
698 processed++;
7a291083
JBT		 699 if (netif_msg_rx_status(port))
700 ehea_dump(cqe, sizeof(*cqe), "CQE");
701
702 last_wqe_index = wqe_index;
703 rmb();
704 if (!ehea_check_cqe(cqe, &rq)) {
508d2b5d
DM		 705 if (rq == 1) {
706 /* LL RQ1 */
7a291083
JBT		 707 skb = get_skb_by_index_ll(skb_arr_rq1,
708 skb_arr_rq1_len,
709 wqe_index);
710 if (unlikely(!skb)) {
711 if (netif_msg_rx_err(port))
712 ehea_error("LL rq1: skb=NULL");
18604c54 713
bea3348e 714 skb = netdev_alloc_skb(dev,
7a291083
JBT		 715 EHEA_L_PKT_SIZE);
716 if (!skb)
717 break;
718 }
508d2b5d 719 skb_copy_to_linear_data(skb, ((char *)cqe) + 64,
d1d25aab 720 cqe->num_bytes_transfered - 4);
bea3348e 721 ehea_fill_skb(dev, skb, cqe);
508d2b5d
DM		 722 } else if (rq == 2) {
723 /* RQ2 */
7a291083
JBT		 724 skb = get_skb_by_index(skb_arr_rq2,
725 skb_arr_rq2_len, cqe);
726 if (unlikely(!skb)) {
727 if (netif_msg_rx_err(port))
728 ehea_error("rq2: skb=NULL");
729 break;
730 }
bea3348e 731 ehea_fill_skb(dev, skb, cqe);
7a291083 732 processed_rq2++;
508d2b5d
DM		 733 } else {
734 /* RQ3 */
7a291083
JBT		 735 skb = get_skb_by_index(skb_arr_rq3,
736 skb_arr_rq3_len, cqe);
737 if (unlikely(!skb)) {
738 if (netif_msg_rx_err(port))
739 ehea_error("rq3: skb=NULL");
740 break;
741 }
bea3348e 742 ehea_fill_skb(dev, skb, cqe);
7a291083
JBT		 743 processed_rq3++;
744 }
745
d4dc4ec9 746 ehea_proc_skb(pr, cqe, skb);
18604c54 747 } else {
acbddb59 748 pr->p_stats.poll_receive_errors++;
7a291083
JBT		 749 port_reset = ehea_treat_poll_error(pr, rq, cqe,
750 &processed_rq2,
751 &processed_rq3);
752 if (port_reset)
753 break;
754 }
755 cqe = ehea_poll_rq1(qp, &wqe_index);
756 }
d4dc4ec9
JBT		 757 if (use_lro)
758 lro_flush_all(&pr->lro_mgr);
7a291083 759
7a291083
JBT		 760 pr->rx_packets += processed;
761
762 ehea_refill_rq1(pr, last_wqe_index, processed_rq1);
763 ehea_refill_rq2(pr, processed_rq2);
764 ehea_refill_rq3(pr, processed_rq3);
765
bea3348e 766 return processed;
7a291083
JBT		 767}
768
18604c54 769static struct ehea_cqe *ehea_proc_cqes(struct ehea_port_res *pr, int my_quota)
7a291083 770{
acbddb59 771 struct sk_buff *skb;
7a291083
JBT		 772 struct ehea_cq *send_cq = pr->send_cq;
773 struct ehea_cqe *cqe;
18604c54 774 int quota = my_quota;
7a291083
JBT		 775 int cqe_counter = 0;
776 int swqe_av = 0;
acbddb59 777 int index;
7a291083
JBT		 778 unsigned long flags;
779
18604c54 780 cqe = ehea_poll_cq(send_cq);
508d2b5d 781 while (cqe && (quota > 0)) {
18604c54
JBT		 782 ehea_inc_cq(send_cq);
783
7a291083
JBT		 784 cqe_counter++;
785 rmb();
786 if (cqe->status & EHEA_CQE_STAT_ERR_MASK) {
787 ehea_error("Send Completion Error: Resetting port");
788 if (netif_msg_tx_err(pr->port))
789 ehea_dump(cqe, sizeof(*cqe), "Send CQE");
2f69ae01 790 ehea_schedule_port_reset(pr->port);
7a291083
JBT		 791 break;
792 }
793
794 if (netif_msg_tx_done(pr->port))
795 ehea_dump(cqe, sizeof(*cqe), "CQE");
796
797 if (likely(EHEA_BMASK_GET(EHEA_WR_ID_TYPE, cqe->wr_id)
acbddb59
JBT		 798 == EHEA_SWQE2_TYPE)) {
799
800 index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, cqe->wr_id);
801 skb = pr->sq_skba.arr[index];
802 dev_kfree_skb(skb);
803 pr->sq_skba.arr[index] = NULL;
804 }
7a291083
JBT		 805
806 swqe_av += EHEA_BMASK_GET(EHEA_WR_ID_REFILL, cqe->wr_id);
807 quota--;
18604c54
JBT		 808
809 cqe = ehea_poll_cq(send_cq);
810 };
7a291083
JBT		 811
812 ehea_update_feca(send_cq, cqe_counter);
813 atomic_add(swqe_av, &pr->swqe_avail);
814
815 spin_lock_irqsave(&pr->netif_queue, flags);
18604c54 816
7a291083
JBT		 817 if (pr->queue_stopped && (atomic_read(&pr->swqe_avail)
818 >= pr->swqe_refill_th)) {
819 netif_wake_queue(pr->port->netdev);
820 pr->queue_stopped = 0;
821 }
822 spin_unlock_irqrestore(&pr->netif_queue, flags);
823
18604c54 824 return cqe;
7a291083
JBT		 825}
826
18604c54 827#define EHEA_NAPI_POLL_NUM_BEFORE_IRQ 16
bea3348e 828#define EHEA_POLL_MAX_CQES 65535
18604c54 829
bea3348e 830static int ehea_poll(struct napi_struct *napi, int budget)
7a291083 831{
508d2b5d
DM		 832 struct ehea_port_res *pr = container_of(napi, struct ehea_port_res,
833 napi);
bea3348e 834 struct net_device *dev = pr->port->netdev;
18604c54
JBT		 835 struct ehea_cqe *cqe;
836 struct ehea_cqe *cqe_skb = NULL;
837 int force_irq, wqe_index;
bea3348e 838 int rx = 0;
18604c54
JBT		 839
840 force_irq = (pr->poll_counter > EHEA_NAPI_POLL_NUM_BEFORE_IRQ);
bea3348e
SH		 841 cqe_skb = ehea_proc_cqes(pr, EHEA_POLL_MAX_CQES);
842
843 if (!force_irq)
844 rx += ehea_proc_rwqes(dev, pr, budget - rx);
18604c54 845
bea3348e 846 while ((rx != budget) || force_irq) {
18604c54 847 pr->poll_counter = 0;
bea3348e 848 force_irq = 0;
288379f0 849 napi_complete(napi);
18604c54
JBT		 850 ehea_reset_cq_ep(pr->recv_cq);
851 ehea_reset_cq_ep(pr->send_cq);
852 ehea_reset_cq_n1(pr->recv_cq);
853 ehea_reset_cq_n1(pr->send_cq);
854 cqe = ehea_poll_rq1(pr->qp, &wqe_index);
855 cqe_skb = ehea_poll_cq(pr->send_cq);
856
e542aa6b 857 if (!cqe && !cqe_skb)
bea3348e 858 return rx;
18604c54 859
288379f0 860 if (!napi_reschedule(napi))
bea3348e 861 return rx;
18604c54 862
bea3348e
SH		 863 cqe_skb = ehea_proc_cqes(pr, EHEA_POLL_MAX_CQES);
864 rx += ehea_proc_rwqes(dev, pr, budget - rx);
865 }
e542aa6b 866
bea3348e
SH		 867 pr->poll_counter++;
868 return rx;
7a291083
JBT		 869}
870
8d22c971
JBT		 871#ifdef CONFIG_NET_POLL_CONTROLLER
872static void ehea_netpoll(struct net_device *dev)
873{
874 struct ehea_port *port = netdev_priv(dev);
bea3348e 875 int i;
8d22c971 876
bea3348e 877 for (i = 0; i < port->num_def_qps; i++)
288379f0 878 napi_schedule(&port->port_res[i].napi);
8d22c971
JBT		 879}
880#endif
881
7d12e780 882static irqreturn_t ehea_recv_irq_handler(int irq, void *param)
7a291083
JBT		 883{
884 struct ehea_port_res *pr = param;
18604c54 885
288379f0 886 napi_schedule(&pr->napi);
18604c54 887
7a291083
JBT		 888 return IRQ_HANDLED;
889}
890
7d12e780 891static irqreturn_t ehea_qp_aff_irq_handler(int irq, void *param)
7a291083
JBT		 892{
893 struct ehea_port *port = param;
894 struct ehea_eqe *eqe;
d2db9eea 895 struct ehea_qp *qp;
7a291083
JBT		 896 u32 qp_token;
897
898 eqe = ehea_poll_eq(port->qp_eq);
bb3a6449 899
7a291083 900 while (eqe) {
7a291083 901 qp_token = EHEA_BMASK_GET(EHEA_EQE_QP_TOKEN, eqe->entry);
a1c5a893 902 ehea_error("QP aff_err: entry=0x%llx, token=0x%x",
bb3a6449 903 eqe->entry, qp_token);
d2db9eea
JBT		 904
905 qp = port->port_res[qp_token].qp;
906 ehea_error_data(port->adapter, qp->fw_handle);
bb3a6449 907 eqe = ehea_poll_eq(port->qp_eq);
7a291083
JBT		 908 }
909
2f69ae01 910 ehea_schedule_port_reset(port);
d2db9eea 911
7a291083
JBT		 912 return IRQ_HANDLED;
913}
914
915static struct ehea_port *ehea_get_port(struct ehea_adapter *adapter,
916 int logical_port)
917{
918 int i;
919
1acf2318 920 for (i = 0; i < EHEA_MAX_PORTS; i++)
41b69c70 921 if (adapter->port[i])
d1d25aab 922 if (adapter->port[i]->logical_port_id == logical_port)
41b69c70 923 return adapter->port[i];
7a291083
JBT		 924 return NULL;
925}
926
927int ehea_sense_port_attr(struct ehea_port *port)
928{
929 int ret;
930 u64 hret;
931 struct hcp_ehea_port_cb0 *cb0;
932
508d2b5d 933 /* may be called via ehea_neq_tasklet() */
3faf2693 934 cb0 = (void *)get_zeroed_page(GFP_ATOMIC);
508d2b5d 935 if (!cb0) {
7a291083
JBT		 936 ehea_error("no mem for cb0");
937 ret = -ENOMEM;
938 goto out;
939 }
940
941 hret = ehea_h_query_ehea_port(port->adapter->handle,
942 port->logical_port_id, H_PORT_CB0,
943 EHEA_BMASK_SET(H_PORT_CB0_ALL, 0xFFFF),
944 cb0);
945 if (hret != H_SUCCESS) {
946 ret = -EIO;
947 goto out_free;
948 }
949
950 /* MAC address */
951 port->mac_addr = cb0->port_mac_addr << 16;
952
508d2b5d 953 if (!is_valid_ether_addr((u8 *)&port->mac_addr)) {
7a291083
JBT		 954 ret = -EADDRNOTAVAIL;
955 goto out_free;
956 }
957
958 /* Port speed */
959 switch (cb0->port_speed) {
960 case H_SPEED_10M_H:
961 port->port_speed = EHEA_SPEED_10M;
962 port->full_duplex = 0;
963 break;
964 case H_SPEED_10M_F:
965 port->port_speed = EHEA_SPEED_10M;
966 port->full_duplex = 1;
967 break;
968 case H_SPEED_100M_H:
969 port->port_speed = EHEA_SPEED_100M;
970 port->full_duplex = 0;
971 break;
972 case H_SPEED_100M_F:
973 port->port_speed = EHEA_SPEED_100M;
974 port->full_duplex = 1;
975 break;
976 case H_SPEED_1G_F:
977 port->port_speed = EHEA_SPEED_1G;
978 port->full_duplex = 1;
979 break;
980 case H_SPEED_10G_F:
981 port->port_speed = EHEA_SPEED_10G;
982 port->full_duplex = 1;
983 break;
984 default:
985 port->port_speed = 0;
986 port->full_duplex = 0;
987 break;
988 }
989
e919b593 990 port->autoneg = 1;
18604c54 991 port->num_mcs = cb0->num_default_qps;
e919b593 992
7a291083 993 /* Number of default QPs */
18604c54
JBT		 994 if (use_mcs)
995 port->num_def_qps = cb0->num_default_qps;
996 else
997 port->num_def_qps = 1;
7a291083
JBT		 998
999 if (!port->num_def_qps) {
1000 ret = -EINVAL;
1001 goto out_free;
1002 }
1003
18604c54
JBT		 1004 port->num_tx_qps = num_tx_qps;
1005
1006 if (port->num_def_qps >= port->num_tx_qps)
7a291083
JBT		 1007 port->num_add_tx_qps = 0;
1008 else
18604c54 1009 port->num_add_tx_qps = port->num_tx_qps - port->num_def_qps;
7a291083
JBT		 1010
1011 ret = 0;
1012out_free:
1013 if (ret || netif_msg_probe(port))
1014 ehea_dump(cb0, sizeof(*cb0), "ehea_sense_port_attr");
3faf2693 1015 free_page((unsigned long)cb0);
7a291083
JBT		 1016out:
1017 return ret;
1018}
1019
1020int ehea_set_portspeed(struct ehea_port *port, u32 port_speed)
1021{
1022 struct hcp_ehea_port_cb4 *cb4;
1023 u64 hret;
1024 int ret = 0;
1025
3faf2693 1026 cb4 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083
JBT		 1027 if (!cb4) {
1028 ehea_error("no mem for cb4");
1029 ret = -ENOMEM;
1030 goto out;
1031 }
1032
1033 cb4->port_speed = port_speed;
1034
1035 netif_carrier_off(port->netdev);
1036
1037 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1038 port->logical_port_id,
1039 H_PORT_CB4, H_PORT_CB4_SPEED, cb4);
1040 if (hret == H_SUCCESS) {
1041 port->autoneg = port_speed == EHEA_SPEED_AUTONEG ? 1 : 0;
1042
1043 hret = ehea_h_query_ehea_port(port->adapter->handle,
1044 port->logical_port_id,
1045 H_PORT_CB4, H_PORT_CB4_SPEED,
1046 cb4);
1047 if (hret == H_SUCCESS) {
1048 switch (cb4->port_speed) {
1049 case H_SPEED_10M_H:
1050 port->port_speed = EHEA_SPEED_10M;
1051 port->full_duplex = 0;
1052 break;
1053 case H_SPEED_10M_F:
1054 port->port_speed = EHEA_SPEED_10M;
1055 port->full_duplex = 1;
1056 break;
1057 case H_SPEED_100M_H:
1058 port->port_speed = EHEA_SPEED_100M;
1059 port->full_duplex = 0;
1060 break;
1061 case H_SPEED_100M_F:
1062 port->port_speed = EHEA_SPEED_100M;
1063 port->full_duplex = 1;
1064 break;
1065 case H_SPEED_1G_F:
1066 port->port_speed = EHEA_SPEED_1G;
1067 port->full_duplex = 1;
1068 break;
1069 case H_SPEED_10G_F:
1070 port->port_speed = EHEA_SPEED_10G;
1071 port->full_duplex = 1;
1072 break;
1073 default:
1074 port->port_speed = 0;
1075 port->full_duplex = 0;
1076 break;
1077 }
1078 } else {
1079 ehea_error("Failed sensing port speed");
1080 ret = -EIO;
1081 }
1082 } else {
1083 if (hret == H_AUTHORITY) {
7674a588 1084 ehea_info("Hypervisor denied setting port speed");
7a291083
JBT		 1085 ret = -EPERM;
1086 } else {
1087 ret = -EIO;
1088 ehea_error("Failed setting port speed");
1089 }
1090 }
8759cf76
JBT		 1091 if (!prop_carrier_state || (port->phy_link == EHEA_PHY_LINK_UP))
1092 netif_carrier_on(port->netdev);
1093
3faf2693 1094 free_page((unsigned long)cb4);
7a291083
JBT		 1095out:
1096 return ret;
1097}
1098
1099static void ehea_parse_eqe(struct ehea_adapter *adapter, u64 eqe)
1100{
1101 int ret;
1102 u8 ec;
1103 u8 portnum;
1104 struct ehea_port *port;
1105
1106 ec = EHEA_BMASK_GET(NEQE_EVENT_CODE, eqe);
1107 portnum = EHEA_BMASK_GET(NEQE_PORTNUM, eqe);
1108 port = ehea_get_port(adapter, portnum);
1109
1110 switch (ec) {
1111 case EHEA_EC_PORTSTATE_CHG: /* port state change */
1112
1113 if (!port) {
1114 ehea_error("unknown portnum %x", portnum);
1115 break;
1116 }
1117
1118 if (EHEA_BMASK_GET(NEQE_PORT_UP, eqe)) {
1119 if (!netif_carrier_ok(port->netdev)) {
1e1675cc 1120 ret = ehea_sense_port_attr(port);
7a291083
JBT		 1121 if (ret) {
1122 ehea_error("failed resensing port "
1123 "attributes");
1124 break;
1125 }
1126
1127 if (netif_msg_link(port))
1128 ehea_info("%s: Logical port up: %dMbps "
1129 "%s Duplex",
1130 port->netdev->name,
1131 port->port_speed,
1132 port->full_duplex ==
1133 1 ? "Full" : "Half");
1134
1135 netif_carrier_on(port->netdev);
1136 netif_wake_queue(port->netdev);
1137 }
1138 } else
1139 if (netif_carrier_ok(port->netdev)) {
1140 if (netif_msg_link(port))
1141 ehea_info("%s: Logical port down",
1142 port->netdev->name);
1143 netif_carrier_off(port->netdev);
1144 netif_stop_queue(port->netdev);
1145 }
1146
1147 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PORT_UP, eqe)) {
8759cf76 1148 port->phy_link = EHEA_PHY_LINK_UP;
7a291083
JBT		 1149 if (netif_msg_link(port))
1150 ehea_info("%s: Physical port up",
1151 port->netdev->name);
8759cf76
JBT		 1152 if (prop_carrier_state)
1153 netif_carrier_on(port->netdev);
7a291083 1154 } else {
8759cf76 1155 port->phy_link = EHEA_PHY_LINK_DOWN;
7a291083
JBT		 1156 if (netif_msg_link(port))
1157 ehea_info("%s: Physical port down",
1158 port->netdev->name);
8759cf76
JBT		 1159 if (prop_carrier_state)
1160 netif_carrier_off(port->netdev);
7a291083
JBT		 1161 }
1162
1163 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PRIMARY, eqe))
1164 ehea_info("External switch port is primary port");
1165 else
1166 ehea_info("External switch port is backup port");
1167
1168 break;
1169 case EHEA_EC_ADAPTER_MALFUNC:
1170 ehea_error("Adapter malfunction");
1171 break;
1172 case EHEA_EC_PORT_MALFUNC:
1173 ehea_info("Port malfunction: Device: %s", port->netdev->name);
1174 netif_carrier_off(port->netdev);
1175 netif_stop_queue(port->netdev);
1176 break;
1177 default:
a1c5a893 1178 ehea_error("unknown event code %x, eqe=0x%llX", ec, eqe);
7a291083
JBT		 1179 break;
1180 }
1181}
1182
1183static void ehea_neq_tasklet(unsigned long data)
1184{
508d2b5d 1185 struct ehea_adapter *adapter = (struct ehea_adapter *)data;
7a291083
JBT		 1186 struct ehea_eqe *eqe;
1187 u64 event_mask;
1188
1189 eqe = ehea_poll_eq(adapter->neq);
1190 ehea_debug("eqe=%p", eqe);
1191
1192 while (eqe) {
1193 ehea_debug("*eqe=%lx", eqe->entry);
1194 ehea_parse_eqe(adapter, eqe->entry);
1195 eqe = ehea_poll_eq(adapter->neq);
1196 ehea_debug("next eqe=%p", eqe);
1197 }
1198
1199 event_mask = EHEA_BMASK_SET(NELR_PORTSTATE_CHG, 1)
1200 | EHEA_BMASK_SET(NELR_ADAPTER_MALFUNC, 1)
1201 | EHEA_BMASK_SET(NELR_PORT_MALFUNC, 1);
1202
1203 ehea_h_reset_events(adapter->handle,
1204 adapter->neq->fw_handle, event_mask);
1205}
1206
7d12e780 1207static irqreturn_t ehea_interrupt_neq(int irq, void *param)
7a291083
JBT		 1208{
1209 struct ehea_adapter *adapter = param;
1210 tasklet_hi_schedule(&adapter->neq_tasklet);
1211 return IRQ_HANDLED;
1212}
1213
1214
1215static int ehea_fill_port_res(struct ehea_port_res *pr)
1216{
1217 int ret;
1218 struct ehea_qp_init_attr *init_attr = &pr->qp->init_attr;
1219
e2878806
TK		 1220 ehea_init_fill_rq1(pr, init_attr->act_nr_rwqes_rq1
1221 - init_attr->act_nr_rwqes_rq2
1222 - init_attr->act_nr_rwqes_rq3 - 1);
7a291083 1223
e2878806 1224 ret = ehea_refill_rq2(pr, init_attr->act_nr_rwqes_rq2 - 1);
7a291083
JBT		 1225
1226 ret |= ehea_refill_rq3(pr, init_attr->act_nr_rwqes_rq3 - 1);
1227
1228 return ret;
1229}
1230
1231static int ehea_reg_interrupts(struct net_device *dev)
1232{
1233 struct ehea_port *port = netdev_priv(dev);
1234 struct ehea_port_res *pr;
1235 int i, ret;
1236
7a291083
JBT		 1237
1238 snprintf(port->int_aff_name, EHEA_IRQ_NAME_SIZE - 1, "%s-aff",
1239 dev->name);
1240
6b08f3ae 1241 ret = ibmebus_request_irq(port->qp_eq->attr.ist1,
7a291083 1242 ehea_qp_aff_irq_handler,
38515e90 1243 IRQF_DISABLED, port->int_aff_name, port);
7a291083
JBT		 1244 if (ret) {
1245 ehea_error("failed registering irq for qp_aff_irq_handler:"
1246 "ist=%X", port->qp_eq->attr.ist1);
1247 goto out_free_qpeq;
1248 }
1249
1250 if (netif_msg_ifup(port))
1251 ehea_info("irq_handle 0x%X for function qp_aff_irq_handler "
1252 "registered", port->qp_eq->attr.ist1);
1253
18604c54 1254
7a291083
JBT		 1255 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
1256 pr = &port->port_res[i];
1257 snprintf(pr->int_send_name, EHEA_IRQ_NAME_SIZE - 1,
18604c54 1258 "%s-queue%d", dev->name, i);
6b08f3ae 1259 ret = ibmebus_request_irq(pr->eq->attr.ist1,
18604c54 1260 ehea_recv_irq_handler,
38515e90 1261 IRQF_DISABLED, pr->int_send_name,
7a291083
JBT		 1262 pr);
1263 if (ret) {
18604c54 1264 ehea_error("failed registering irq for ehea_queue "
7a291083 1265 "port_res_nr:%d, ist=%X", i,
18604c54 1266 pr->eq->attr.ist1);
7a291083
JBT		 1267 goto out_free_req;
1268 }
1269 if (netif_msg_ifup(port))
18604c54
JBT		 1270 ehea_info("irq_handle 0x%X for function ehea_queue_int "
1271 "%d registered", pr->eq->attr.ist1, i);
7a291083
JBT		 1272 }
1273out:
1274 return ret;
1275
18604c54 1276
7a291083
JBT		 1277out_free_req:
1278 while (--i >= 0) {
18604c54 1279 u32 ist = port->port_res[i].eq->attr.ist1;
6b08f3ae 1280 ibmebus_free_irq(ist, &port->port_res[i]);
7a291083 1281 }
18604c54 1282
7a291083 1283out_free_qpeq:
6b08f3ae 1284 ibmebus_free_irq(port->qp_eq->attr.ist1, port);
7a291083 1285 i = port->num_def_qps;
18604c54 1286
7a291083 1287 goto out;
18604c54 1288
7a291083
JBT		 1289}
1290
1291static void ehea_free_interrupts(struct net_device *dev)
1292{
1293 struct ehea_port *port = netdev_priv(dev);
1294 struct ehea_port_res *pr;
1295 int i;
1296
1297 /* send */
18604c54 1298
7a291083
JBT		 1299 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
1300 pr = &port->port_res[i];
6b08f3ae 1301 ibmebus_free_irq(pr->eq->attr.ist1, pr);
7a291083
JBT		 1302 if (netif_msg_intr(port))
1303 ehea_info("free send irq for res %d with handle 0x%X",
18604c54 1304 i, pr->eq->attr.ist1);
7a291083
JBT		 1305 }
1306
1307 /* associated events */
6b08f3ae 1308 ibmebus_free_irq(port->qp_eq->attr.ist1, port);
7a291083
JBT		 1309 if (netif_msg_intr(port))
1310 ehea_info("associated event interrupt for handle 0x%X freed",
1311 port->qp_eq->attr.ist1);
1312}
1313
1314static int ehea_configure_port(struct ehea_port *port)
1315{
1316 int ret, i;
1317 u64 hret, mask;
1318 struct hcp_ehea_port_cb0 *cb0;
1319
1320 ret = -ENOMEM;
3faf2693 1321 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083
JBT		 1322 if (!cb0)
1323 goto out;
1324
1325 cb0->port_rc = EHEA_BMASK_SET(PXLY_RC_VALID, 1)
1326 | EHEA_BMASK_SET(PXLY_RC_IP_CHKSUM, 1)
1327 | EHEA_BMASK_SET(PXLY_RC_TCP_UDP_CHKSUM, 1)
1328 | EHEA_BMASK_SET(PXLY_RC_VLAN_XTRACT, 1)
1329 | EHEA_BMASK_SET(PXLY_RC_VLAN_TAG_FILTER,
1330 PXLY_RC_VLAN_FILTER)
1331 | EHEA_BMASK_SET(PXLY_RC_JUMBO_FRAME, 1);
1332
18604c54
JBT		 1333 for (i = 0; i < port->num_mcs; i++)
1334 if (use_mcs)
1335 cb0->default_qpn_arr[i] =
1336 port->port_res[i].qp->init_attr.qp_nr;
1337 else
1338 cb0->default_qpn_arr[i] =
1339 port->port_res[0].qp->init_attr.qp_nr;
e542aa6b 1340
7a291083
JBT		 1341 if (netif_msg_ifup(port))
1342 ehea_dump(cb0, sizeof(*cb0), "ehea_configure_port");
1343
1344 mask = EHEA_BMASK_SET(H_PORT_CB0_PRC, 1)
1345 | EHEA_BMASK_SET(H_PORT_CB0_DEFQPNARRAY, 1);
1346
1347 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1348 port->logical_port_id,
1349 H_PORT_CB0, mask, cb0);
1350 ret = -EIO;
1351 if (hret != H_SUCCESS)
1352 goto out_free;
1353
1354 ret = 0;
1355
1356out_free:
3faf2693 1357 free_page((unsigned long)cb0);
7a291083
JBT		 1358out:
1359 return ret;
1360}
1361
e542aa6b 1362int ehea_gen_smrs(struct ehea_port_res *pr)
7a291083 1363{
e542aa6b 1364 int ret;
7a291083
JBT		 1365 struct ehea_adapter *adapter = pr->port->adapter;
1366
e542aa6b
JBT		 1367 ret = ehea_gen_smr(adapter, &adapter->mr, &pr->send_mr);
1368 if (ret)
7a291083
JBT		 1369 goto out;
1370
e542aa6b
JBT		 1371 ret = ehea_gen_smr(adapter, &adapter->mr, &pr->recv_mr);
1372 if (ret)
1373 goto out_free;
7a291083
JBT		 1374
1375 return 0;
1376
e542aa6b
JBT		 1377out_free:
1378 ehea_rem_mr(&pr->send_mr);
7a291083 1379out:
e542aa6b 1380 ehea_error("Generating SMRS failed\n");
7a291083
JBT		 1381 return -EIO;
1382}
1383
e542aa6b 1384int ehea_rem_smrs(struct ehea_port_res *pr)
7a291083 1385{
e542aa6b
JBT		 1386 if ((ehea_rem_mr(&pr->send_mr))
1387 || (ehea_rem_mr(&pr->recv_mr)))
1388 return -EIO;
1389 else
1390 return 0;
7a291083
JBT		 1391}
1392
1393static int ehea_init_q_skba(struct ehea_q_skb_arr *q_skba, int max_q_entries)
1394{
508d2b5d 1395 int arr_size = sizeof(void *) * max_q_entries;
7a291083
JBT		 1396
1397 q_skba->arr = vmalloc(arr_size);
1398 if (!q_skba->arr)
1399 return -ENOMEM;
1400
1401 memset(q_skba->arr, 0, arr_size);
1402
1403 q_skba->len = max_q_entries;
1404 q_skba->index = 0;
1405 q_skba->os_skbs = 0;
1406
1407 return 0;
1408}
1409
1410static int ehea_init_port_res(struct ehea_port *port, struct ehea_port_res *pr,
1411 struct port_res_cfg *pr_cfg, int queue_token)
1412{
1413 struct ehea_adapter *adapter = port->adapter;
1414 enum ehea_eq_type eq_type = EHEA_EQ;
1415 struct ehea_qp_init_attr *init_attr = NULL;
1416 int ret = -EIO;
1417
1418 memset(pr, 0, sizeof(struct ehea_port_res));
1419
1420 pr->port = port;
7a291083
JBT		 1421 spin_lock_init(&pr->xmit_lock);
1422 spin_lock_init(&pr->netif_queue);
1423
18604c54
JBT		 1424 pr->eq = ehea_create_eq(adapter, eq_type, EHEA_MAX_ENTRIES_EQ, 0);
1425 if (!pr->eq) {
1426 ehea_error("create_eq failed (eq)");
7a291083
JBT		 1427 goto out_free;
1428 }
1429
1430 pr->recv_cq = ehea_create_cq(adapter, pr_cfg->max_entries_rcq,
18604c54 1431 pr->eq->fw_handle,
7a291083
JBT		 1432 port->logical_port_id);
1433 if (!pr->recv_cq) {
1434 ehea_error("create_cq failed (cq_recv)");
1435 goto out_free;
1436 }
1437
1438 pr->send_cq = ehea_create_cq(adapter, pr_cfg->max_entries_scq,
18604c54 1439 pr->eq->fw_handle,
7a291083
JBT		 1440 port->logical_port_id);
1441 if (!pr->send_cq) {
1442 ehea_error("create_cq failed (cq_send)");
1443 goto out_free;
1444 }
1445
1446 if (netif_msg_ifup(port))
1447 ehea_info("Send CQ: act_nr_cqes=%d, Recv CQ: act_nr_cqes=%d",
1448 pr->send_cq->attr.act_nr_of_cqes,
1449 pr->recv_cq->attr.act_nr_of_cqes);
1450
1451 init_attr = kzalloc(sizeof(*init_attr), GFP_KERNEL);
1452 if (!init_attr) {
1453 ret = -ENOMEM;
1454 ehea_error("no mem for ehea_qp_init_attr");
1455 goto out_free;
1456 }
1457
1458 init_attr->low_lat_rq1 = 1;
1459 init_attr->signalingtype = 1; /* generate CQE if specified in WQE */
1460 init_attr->rq_count = 3;
1461 init_attr->qp_token = queue_token;
1462 init_attr->max_nr_send_wqes = pr_cfg->max_entries_sq;
1463 init_attr->max_nr_rwqes_rq1 = pr_cfg->max_entries_rq1;
1464 init_attr->max_nr_rwqes_rq2 = pr_cfg->max_entries_rq2;
1465 init_attr->max_nr_rwqes_rq3 = pr_cfg->max_entries_rq3;
1466 init_attr->wqe_size_enc_sq = EHEA_SG_SQ;
1467 init_attr->wqe_size_enc_rq1 = EHEA_SG_RQ1;
1468 init_attr->wqe_size_enc_rq2 = EHEA_SG_RQ2;
1469 init_attr->wqe_size_enc_rq3 = EHEA_SG_RQ3;
1470 init_attr->rq2_threshold = EHEA_RQ2_THRESHOLD;
1471 init_attr->rq3_threshold = EHEA_RQ3_THRESHOLD;
1472 init_attr->port_nr = port->logical_port_id;
1473 init_attr->send_cq_handle = pr->send_cq->fw_handle;
1474 init_attr->recv_cq_handle = pr->recv_cq->fw_handle;
1475 init_attr->aff_eq_handle = port->qp_eq->fw_handle;
1476
1477 pr->qp = ehea_create_qp(adapter, adapter->pd, init_attr);
1478 if (!pr->qp) {
1479 ehea_error("create_qp failed");
1480 ret = -EIO;
1481 goto out_free;
1482 }
1483
1484 if (netif_msg_ifup(port))
1485 ehea_info("QP: qp_nr=%d\n act_nr_snd_wqe=%d\n nr_rwqe_rq1=%d\n "
1486 "nr_rwqe_rq2=%d\n nr_rwqe_rq3=%d", init_attr->qp_nr,
1487 init_attr->act_nr_send_wqes,
1488 init_attr->act_nr_rwqes_rq1,
1489 init_attr->act_nr_rwqes_rq2,
1490 init_attr->act_nr_rwqes_rq3);
1491
44fb3126
TK		 1492 pr->sq_skba_size = init_attr->act_nr_send_wqes + 1;
1493
1494 ret = ehea_init_q_skba(&pr->sq_skba, pr->sq_skba_size);
7a291083
JBT		 1495 ret |= ehea_init_q_skba(&pr->rq1_skba, init_attr->act_nr_rwqes_rq1 + 1);
1496 ret |= ehea_init_q_skba(&pr->rq2_skba, init_attr->act_nr_rwqes_rq2 + 1);
1497 ret |= ehea_init_q_skba(&pr->rq3_skba, init_attr->act_nr_rwqes_rq3 + 1);
1498 if (ret)
1499 goto out_free;
1500
1501 pr->swqe_refill_th = init_attr->act_nr_send_wqes / 10;
1502 if (ehea_gen_smrs(pr) != 0) {
1503 ret = -EIO;
1504 goto out_free;
1505 }
18604c54 1506
7a291083
JBT		 1507 atomic_set(&pr->swqe_avail, init_attr->act_nr_send_wqes - 1);
1508
1509 kfree(init_attr);
18604c54 1510
bea3348e 1511 netif_napi_add(pr->port->netdev, &pr->napi, ehea_poll, 64);
18604c54 1512
d4dc4ec9
JBT		 1513 pr->lro_mgr.max_aggr = pr->port->lro_max_aggr;
1514 pr->lro_mgr.max_desc = MAX_LRO_DESCRIPTORS;
1515 pr->lro_mgr.lro_arr = pr->lro_desc;
1516 pr->lro_mgr.get_skb_header = get_skb_hdr;
1517 pr->lro_mgr.features = LRO_F_NAPI | LRO_F_EXTRACT_VLAN_ID;
1518 pr->lro_mgr.dev = port->netdev;
1519 pr->lro_mgr.ip_summed = CHECKSUM_UNNECESSARY;
1520 pr->lro_mgr.ip_summed_aggr = CHECKSUM_UNNECESSARY;
1521
7a291083
JBT		 1522 ret = 0;
1523 goto out;
1524
1525out_free:
1526 kfree(init_attr);
1527 vfree(pr->sq_skba.arr);
1528 vfree(pr->rq1_skba.arr);
1529 vfree(pr->rq2_skba.arr);
1530 vfree(pr->rq3_skba.arr);
1531 ehea_destroy_qp(pr->qp);
1532 ehea_destroy_cq(pr->send_cq);
1533 ehea_destroy_cq(pr->recv_cq);
18604c54 1534 ehea_destroy_eq(pr->eq);
7a291083
JBT		 1535out:
1536 return ret;
1537}
1538
1539static int ehea_clean_portres(struct ehea_port *port, struct ehea_port_res *pr)
1540{
1541 int ret, i;
1542
1543 ret = ehea_destroy_qp(pr->qp);
1544
1545 if (!ret) {
1546 ehea_destroy_cq(pr->send_cq);
1547 ehea_destroy_cq(pr->recv_cq);
18604c54 1548 ehea_destroy_eq(pr->eq);
7a291083
JBT		 1549
1550 for (i = 0; i < pr->rq1_skba.len; i++)
1551 if (pr->rq1_skba.arr[i])
1552 dev_kfree_skb(pr->rq1_skba.arr[i]);
1553
1554 for (i = 0; i < pr->rq2_skba.len; i++)
1555 if (pr->rq2_skba.arr[i])
1556 dev_kfree_skb(pr->rq2_skba.arr[i]);
1557
1558 for (i = 0; i < pr->rq3_skba.len; i++)
1559 if (pr->rq3_skba.arr[i])
1560 dev_kfree_skb(pr->rq3_skba.arr[i]);
1561
1562 for (i = 0; i < pr->sq_skba.len; i++)
1563 if (pr->sq_skba.arr[i])
1564 dev_kfree_skb(pr->sq_skba.arr[i]);
1565
1566 vfree(pr->rq1_skba.arr);
1567 vfree(pr->rq2_skba.arr);
1568 vfree(pr->rq3_skba.arr);
1569 vfree(pr->sq_skba.arr);
1570 ret = ehea_rem_smrs(pr);
1571 }
1572 return ret;
1573}
1574
1575/*
1576 * The write_* functions store information in swqe which is used by
1577 * the hardware to calculate the ip/tcp/udp checksum
1578 */
1579
1580static inline void write_ip_start_end(struct ehea_swqe *swqe,
1581 const struct sk_buff *skb)
1582{
eddc9ec5 1583 swqe->ip_start = skb_network_offset(skb);
c9bdd4b5 1584 swqe->ip_end = (u8)(swqe->ip_start + ip_hdrlen(skb) - 1);
7a291083
JBT		 1585}
1586
1587static inline void write_tcp_offset_end(struct ehea_swqe *swqe,
1588 const struct sk_buff *skb)
1589{
1590 swqe->tcp_offset =
1591 (u8)(swqe->ip_end + 1 + offsetof(struct tcphdr, check));
1592
1593 swqe->tcp_end = (u16)skb->len - 1;
1594}
1595
1596static inline void write_udp_offset_end(struct ehea_swqe *swqe,
1597 const struct sk_buff *skb)
1598{
1599 swqe->tcp_offset =
1600 (u8)(swqe->ip_end + 1 + offsetof(struct udphdr, check));
1601
1602 swqe->tcp_end = (u16)skb->len - 1;
1603}
1604
1605
1606static void write_swqe2_TSO(struct sk_buff *skb,
1607 struct ehea_swqe *swqe, u32 lkey)
1608{
1609 struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry;
1610 u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0];
1611 int skb_data_size = skb->len - skb->data_len;
1612 int headersize;
7a291083
JBT		 1613
1614 /* Packet is TCP with TSO enabled */
1615 swqe->tx_control |= EHEA_SWQE_TSO;
1616 swqe->mss = skb_shinfo(skb)->gso_size;
1617 /* copy only eth/ip/tcp headers to immediate data and
1618 * the rest of skb->data to sg1entry
1619 */
ab6a5bb6 1620 headersize = ETH_HLEN + ip_hdrlen(skb) + tcp_hdrlen(skb);
7a291083
JBT		 1621
1622 skb_data_size = skb->len - skb->data_len;
1623
1624 if (skb_data_size >= headersize) {
1625 /* copy immediate data */
d626f62b 1626 skb_copy_from_linear_data(skb, imm_data, headersize);
7a291083
JBT		 1627 swqe->immediate_data_length = headersize;
1628
1629 if (skb_data_size > headersize) {
1630 /* set sg1entry data */
1631 sg1entry->l_key = lkey;
1632 sg1entry->len = skb_data_size - headersize;
44a5b3d5
TK		 1633 sg1entry->vaddr =
1634 ehea_map_vaddr(skb->data + headersize);
7a291083
JBT		 1635 swqe->descriptors++;
1636 }
1637 } else
1638 ehea_error("cannot handle fragmented headers");
1639}
1640
1641static void write_swqe2_nonTSO(struct sk_buff *skb,
1642 struct ehea_swqe *swqe, u32 lkey)
1643{
1644 int skb_data_size = skb->len - skb->data_len;
1645 u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0];
1646 struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry;
7a291083
JBT		 1647
1648 /* Packet is any nonTSO type
1649 *
1650 * Copy as much as possible skb->data to immediate data and
1651 * the rest to sg1entry
1652 */
1653 if (skb_data_size >= SWQE2_MAX_IMM) {
1654 /* copy immediate data */
d626f62b 1655 skb_copy_from_linear_data(skb, imm_data, SWQE2_MAX_IMM);
7a291083
JBT		 1656
1657 swqe->immediate_data_length = SWQE2_MAX_IMM;
1658
1659 if (skb_data_size > SWQE2_MAX_IMM) {
1660 /* copy sg1entry data */
1661 sg1entry->l_key = lkey;
1662 sg1entry->len = skb_data_size - SWQE2_MAX_IMM;
44a5b3d5
TK		 1663 sg1entry->vaddr =
1664 ehea_map_vaddr(skb->data + SWQE2_MAX_IMM);
7a291083
JBT		 1665 swqe->descriptors++;
1666 }
1667 } else {
d626f62b 1668 skb_copy_from_linear_data(skb, imm_data, skb_data_size);
7a291083
JBT		 1669 swqe->immediate_data_length = skb_data_size;
1670 }
1671}
1672
1673static inline void write_swqe2_data(struct sk_buff *skb, struct net_device *dev,
1674 struct ehea_swqe *swqe, u32 lkey)
1675{
1676 struct ehea_vsgentry *sg_list, *sg1entry, *sgentry;
1677 skb_frag_t *frag;
1678 int nfrags, sg1entry_contains_frag_data, i;
7a291083
JBT		 1679
1680 nfrags = skb_shinfo(skb)->nr_frags;
1681 sg1entry = &swqe->u.immdata_desc.sg_entry;
508d2b5d 1682 sg_list = (struct ehea_vsgentry *)&swqe->u.immdata_desc.sg_list;
7a291083
JBT		 1683 swqe->descriptors = 0;
1684 sg1entry_contains_frag_data = 0;
1685
1686 if ((dev->features & NETIF_F_TSO) && skb_shinfo(skb)->gso_size)
1687 write_swqe2_TSO(skb, swqe, lkey);
1688 else
1689 write_swqe2_nonTSO(skb, swqe, lkey);
1690
1691 /* write descriptors */
1692 if (nfrags > 0) {
1693 if (swqe->descriptors == 0) {
1694 /* sg1entry not yet used */
1695 frag = &skb_shinfo(skb)->frags[0];
1696
1697 /* copy sg1entry data */
1698 sg1entry->l_key = lkey;
1699 sg1entry->len = frag->size;
44a5b3d5
TK		 1700 sg1entry->vaddr =
1701 ehea_map_vaddr(page_address(frag->page)
1702 + frag->page_offset);
7a291083
JBT		 1703 swqe->descriptors++;
1704 sg1entry_contains_frag_data = 1;
1705 }
1706
1707 for (i = sg1entry_contains_frag_data; i < nfrags; i++) {
1708
1709 frag = &skb_shinfo(skb)->frags[i];
1710 sgentry = &sg_list[i - sg1entry_contains_frag_data];
1711
1712 sgentry->l_key = lkey;
1713 sgentry->len = frag->size;
44a5b3d5
TK		 1714 sgentry->vaddr =
1715 ehea_map_vaddr(page_address(frag->page)
1716 + frag->page_offset);
7a291083
JBT		 1717 swqe->descriptors++;
1718 }
1719 }
1720}
1721
1722static int ehea_broadcast_reg_helper(struct ehea_port *port, u32 hcallid)
1723{
1724 int ret = 0;
1725 u64 hret;
1726 u8 reg_type;
1727
1728 /* De/Register untagged packets */
1729 reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_UNTAGGED;
1730 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1731 port->logical_port_id,
1732 reg_type, port->mac_addr, 0, hcallid);
1733 if (hret != H_SUCCESS) {
f9e29228 1734 ehea_error("%sregistering bc address failed (tagged)",
508d2b5d 1735 hcallid == H_REG_BCMC ? "" : "de");
7a291083
JBT		 1736 ret = -EIO;
1737 goto out_herr;
1738 }
1739
1740 /* De/Register VLAN packets */
1741 reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_VLANID_ALL;
1742 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1743 port->logical_port_id,
1744 reg_type, port->mac_addr, 0, hcallid);
1745 if (hret != H_SUCCESS) {
f9e29228
TK		 1746 ehea_error("%sregistering bc address failed (vlan)",
1747 hcallid == H_REG_BCMC ? "" : "de");
7a291083
JBT		 1748 ret = -EIO;
1749 }
1750out_herr:
1751 return ret;
1752}
1753
1754static int ehea_set_mac_addr(struct net_device *dev, void *sa)
1755{
1756 struct ehea_port *port = netdev_priv(dev);
1757 struct sockaddr *mac_addr = sa;
1758 struct hcp_ehea_port_cb0 *cb0;
1759 int ret;
1760 u64 hret;
1761
1762 if (!is_valid_ether_addr(mac_addr->sa_data)) {
1763 ret = -EADDRNOTAVAIL;
1764 goto out;
1765 }
1766
3faf2693 1767 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083
JBT		 1768 if (!cb0) {
1769 ehea_error("no mem for cb0");
1770 ret = -ENOMEM;
1771 goto out;
1772 }
1773
1774 memcpy(&(cb0->port_mac_addr), &(mac_addr->sa_data[0]), ETH_ALEN);
1775
1776 cb0->port_mac_addr = cb0->port_mac_addr >> 16;
1777
1778 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1779 port->logical_port_id, H_PORT_CB0,
1780 EHEA_BMASK_SET(H_PORT_CB0_MAC, 1), cb0);
1781 if (hret != H_SUCCESS) {
1782 ret = -EIO;
1783 goto out_free;
1784 }
1785
1786 memcpy(dev->dev_addr, mac_addr->sa_data, dev->addr_len);
1787
1788 /* Deregister old MAC in pHYP */
00aaea2f
JBT		 1789 if (port->state == EHEA_PORT_UP) {
1790 ret = ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
1791 if (ret)
1792 goto out_upregs;
1793 }
7a291083
JBT		 1794
1795 port->mac_addr = cb0->port_mac_addr << 16;
1796
1797 /* Register new MAC in pHYP */
00aaea2f
JBT		 1798 if (port->state == EHEA_PORT_UP) {
1799 ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
1800 if (ret)
1801 goto out_upregs;
1802 }
7a291083
JBT		 1803
1804 ret = 0;
21eee2dd
TK		 1805
1806out_upregs:
1807 ehea_update_bcmc_registrations();
7a291083 1808out_free:
3faf2693 1809 free_page((unsigned long)cb0);
7a291083
JBT		 1810out:
1811 return ret;
1812}
1813
1814static void ehea_promiscuous_error(u64 hret, int enable)
1815{
7674a588
TK		 1816 if (hret == H_AUTHORITY)
1817 ehea_info("Hypervisor denied %sabling promiscuous mode",
1818 enable == 1 ? "en" : "dis");
1819 else
1820 ehea_error("failed %sabling promiscuous mode",
1821 enable == 1 ? "en" : "dis");
7a291083
JBT		 1822}
1823
1824static void ehea_promiscuous(struct net_device *dev, int enable)
1825{
1826 struct ehea_port *port = netdev_priv(dev);
1827 struct hcp_ehea_port_cb7 *cb7;
1828 u64 hret;
1829
1830 if ((enable && port->promisc) || (!enable && !port->promisc))
1831 return;
1832
3faf2693 1833 cb7 = (void *)get_zeroed_page(GFP_ATOMIC);
7a291083
JBT		 1834 if (!cb7) {
1835 ehea_error("no mem for cb7");
1836 goto out;
1837 }
1838
1839 /* Modify Pxs_DUCQPN in CB7 */
1840 cb7->def_uc_qpn = enable == 1 ? port->port_res[0].qp->fw_handle : 0;
1841
1842 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1843 port->logical_port_id,
1844 H_PORT_CB7, H_PORT_CB7_DUCQPN, cb7);
1845 if (hret) {
1846 ehea_promiscuous_error(hret, enable);
1847 goto out;
1848 }
1849
1850 port->promisc = enable;
1851out:
3faf2693 1852 free_page((unsigned long)cb7);
7a291083
JBT		 1853 return;
1854}
1855
1856static u64 ehea_multicast_reg_helper(struct ehea_port *port, u64 mc_mac_addr,
1857 u32 hcallid)
1858{
1859 u64 hret;
1860 u8 reg_type;
1861
1862 reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST
1863 | EHEA_BCMC_UNTAGGED;
1864
1865 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1866 port->logical_port_id,
1867 reg_type, mc_mac_addr, 0, hcallid);
1868 if (hret)
1869 goto out;
1870
1871 reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST
1872 | EHEA_BCMC_VLANID_ALL;
1873
1874 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1875 port->logical_port_id,
1876 reg_type, mc_mac_addr, 0, hcallid);
1877out:
1878 return hret;
1879}
1880
1881static int ehea_drop_multicast_list(struct net_device *dev)
1882{
1883 struct ehea_port *port = netdev_priv(dev);
1884 struct ehea_mc_list *mc_entry = port->mc_list;
1885 struct list_head *pos;
1886 struct list_head *temp;
1887 int ret = 0;
1888 u64 hret;
1889
1890 list_for_each_safe(pos, temp, &(port->mc_list->list)) {
1891 mc_entry = list_entry(pos, struct ehea_mc_list, list);
1892
1893 hret = ehea_multicast_reg_helper(port, mc_entry->macaddr,
1894 H_DEREG_BCMC);
1895 if (hret) {
1896 ehea_error("failed deregistering mcast MAC");
1897 ret = -EIO;
1898 }
1899
1900 list_del(pos);
1901 kfree(mc_entry);
1902 }
1903 return ret;
1904}
1905
1906static void ehea_allmulti(struct net_device *dev, int enable)
1907{
1908 struct ehea_port *port = netdev_priv(dev);
1909 u64 hret;
1910
1911 if (!port->allmulti) {
1912 if (enable) {
1913 /* Enable ALLMULTI */
1914 ehea_drop_multicast_list(dev);
1915 hret = ehea_multicast_reg_helper(port, 0, H_REG_BCMC);
1916 if (!hret)
1917 port->allmulti = 1;
1918 else
1919 ehea_error("failed enabling IFF_ALLMULTI");
1920 }
1921 } else
1922 if (!enable) {
1923 /* Disable ALLMULTI */
1924 hret = ehea_multicast_reg_helper(port, 0, H_DEREG_BCMC);
1925 if (!hret)
1926 port->allmulti = 0;
1927 else
1928 ehea_error("failed disabling IFF_ALLMULTI");
1929 }
1930}
1931
508d2b5d 1932static void ehea_add_multicast_entry(struct ehea_port *port, u8 *mc_mac_addr)
7a291083
JBT		 1933{
1934 struct ehea_mc_list *ehea_mcl_entry;
1935 u64 hret;
1936
1e1675cc 1937 ehea_mcl_entry = kzalloc(sizeof(*ehea_mcl_entry), GFP_ATOMIC);
7a291083
JBT		 1938 if (!ehea_mcl_entry) {
1939 ehea_error("no mem for mcl_entry");
1940 return;
1941 }
1942
1943 INIT_LIST_HEAD(&ehea_mcl_entry->list);
1944
1945 memcpy(&ehea_mcl_entry->macaddr, mc_mac_addr, ETH_ALEN);
1946
1947 hret = ehea_multicast_reg_helper(port, ehea_mcl_entry->macaddr,
1948 H_REG_BCMC);
1949 if (!hret)
1950 list_add(&ehea_mcl_entry->list, &port->mc_list->list);
1951 else {
1952 ehea_error("failed registering mcast MAC");
1953 kfree(ehea_mcl_entry);
1954 }
1955}
1956
1957static void ehea_set_multicast_list(struct net_device *dev)
1958{
1959 struct ehea_port *port = netdev_priv(dev);
1960 struct dev_mc_list *k_mcl_entry;
1961 int ret, i;
1962
1963 if (dev->flags & IFF_PROMISC) {
1964 ehea_promiscuous(dev, 1);
1965 return;
1966 }
1967 ehea_promiscuous(dev, 0);
1968
1969 if (dev->flags & IFF_ALLMULTI) {
1970 ehea_allmulti(dev, 1);
21eee2dd 1971 goto out;
7a291083
JBT		 1972 }
1973 ehea_allmulti(dev, 0);
1974
1975 if (dev->mc_count) {
1976 ret = ehea_drop_multicast_list(dev);
1977 if (ret) {
1978 /* Dropping the current multicast list failed.
1979 * Enabling ALL_MULTI is the best we can do.
1980 */
1981 ehea_allmulti(dev, 1);
1982 }
1983
1984 if (dev->mc_count > port->adapter->max_mc_mac) {
a1c5a893 1985 ehea_info("Mcast registration limit reached (0x%llx). "
7a291083
JBT		 1986 "Use ALLMULTI!",
1987 port->adapter->max_mc_mac);
1988 goto out;
1989 }
1990
508d2b5d
DM		 1991 for (i = 0, k_mcl_entry = dev->mc_list; i < dev->mc_count; i++,
1992 k_mcl_entry = k_mcl_entry->next)
7a291083 1993 ehea_add_multicast_entry(port, k_mcl_entry->dmi_addr);
508d2b5d 1994
7a291083
JBT		 1995 }
1996out:
21eee2dd 1997 ehea_update_bcmc_registrations();
7a291083
JBT		 1998 return;
1999}
2000
2001static int ehea_change_mtu(struct net_device *dev, int new_mtu)
2002{
2003 if ((new_mtu < 68) || (new_mtu > EHEA_MAX_PACKET_SIZE))
2004 return -EINVAL;
2005 dev->mtu = new_mtu;
2006 return 0;
2007}
2008
2009static void ehea_xmit2(struct sk_buff *skb, struct net_device *dev,
2010 struct ehea_swqe *swqe, u32 lkey)
2011{
2012 if (skb->protocol == htons(ETH_P_IP)) {
eddc9ec5 2013 const struct iphdr *iph = ip_hdr(skb);
d1d25aab 2014
7a291083
JBT		 2015 /* IPv4 */
2016 swqe->tx_control |= EHEA_SWQE_CRC
2017 | EHEA_SWQE_IP_CHECKSUM
2018 | EHEA_SWQE_TCP_CHECKSUM
2019 | EHEA_SWQE_IMM_DATA_PRESENT
2020 | EHEA_SWQE_DESCRIPTORS_PRESENT;
2021
2022 write_ip_start_end(swqe, skb);
2023
eddc9ec5 2024 if (iph->protocol == IPPROTO_UDP) {
d1d25aab
JBT		 2025 if ((iph->frag_off & IP_MF)
2026 || (iph->frag_off & IP_OFFSET))
7a291083
JBT		 2027 /* IP fragment, so don't change cs */
2028 swqe->tx_control &= ~EHEA_SWQE_TCP_CHECKSUM;
2029 else
2030 write_udp_offset_end(swqe, skb);
eddc9ec5 2031 } else if (iph->protocol == IPPROTO_TCP) {
7a291083
JBT		 2032 write_tcp_offset_end(swqe, skb);
2033 }
2034
2035 /* icmp (big data) and ip segmentation packets (all other ip
2036 packets) do not require any special handling */
2037
2038 } else {
2039 /* Other Ethernet Protocol */
2040 swqe->tx_control |= EHEA_SWQE_CRC
2041 | EHEA_SWQE_IMM_DATA_PRESENT
2042 | EHEA_SWQE_DESCRIPTORS_PRESENT;
2043 }
2044
2045 write_swqe2_data(skb, dev, swqe, lkey);
2046}
2047
2048static void ehea_xmit3(struct sk_buff *skb, struct net_device *dev,
2049 struct ehea_swqe *swqe)
2050{
2051 int nfrags = skb_shinfo(skb)->nr_frags;
2052 u8 *imm_data = &swqe->u.immdata_nodesc.immediate_data[0];
2053 skb_frag_t *frag;
2054 int i;
2055
2056 if (skb->protocol == htons(ETH_P_IP)) {
eddc9ec5 2057 const struct iphdr *iph = ip_hdr(skb);
d1d25aab 2058
7a291083
JBT		 2059 /* IPv4 */
2060 write_ip_start_end(swqe, skb);
2061
eddc9ec5 2062 if (iph->protocol == IPPROTO_TCP) {
7a291083
JBT		 2063 swqe->tx_control |= EHEA_SWQE_CRC
2064 | EHEA_SWQE_IP_CHECKSUM
2065 | EHEA_SWQE_TCP_CHECKSUM
2066 | EHEA_SWQE_IMM_DATA_PRESENT;
2067
2068 write_tcp_offset_end(swqe, skb);
2069
eddc9ec5 2070 } else if (iph->protocol == IPPROTO_UDP) {
d1d25aab
JBT		 2071 if ((iph->frag_off & IP_MF)
2072 || (iph->frag_off & IP_OFFSET))
7a291083
JBT		 2073 /* IP fragment, so don't change cs */
2074 swqe->tx_control |= EHEA_SWQE_CRC
2075 | EHEA_SWQE_IMM_DATA_PRESENT;
2076 else {
2077 swqe->tx_control |= EHEA_SWQE_CRC
2078 | EHEA_SWQE_IP_CHECKSUM
2079 | EHEA_SWQE_TCP_CHECKSUM
2080 | EHEA_SWQE_IMM_DATA_PRESENT;
2081
2082 write_udp_offset_end(swqe, skb);
2083 }
2084 } else {
2085 /* icmp (big data) and
2086 ip segmentation packets (all other ip packets) */
2087 swqe->tx_control |= EHEA_SWQE_CRC
2088 | EHEA_SWQE_IP_CHECKSUM
2089 | EHEA_SWQE_IMM_DATA_PRESENT;
2090 }
2091 } else {
2092 /* Other Ethernet Protocol */
2093 swqe->tx_control |= EHEA_SWQE_CRC | EHEA_SWQE_IMM_DATA_PRESENT;
2094 }
2095 /* copy (immediate) data */
2096 if (nfrags == 0) {
2097 /* data is in a single piece */
d626f62b 2098 skb_copy_from_linear_data(skb, imm_data, skb->len);
7a291083
JBT		 2099 } else {
2100 /* first copy data from the skb->data buffer ... */
d626f62b
ACM		 2101 skb_copy_from_linear_data(skb, imm_data,
2102 skb->len - skb->data_len);
7a291083
JBT		 2103 imm_data += skb->len - skb->data_len;
2104
2105 /* ... then copy data from the fragments */
2106 for (i = 0; i < nfrags; i++) {
2107 frag = &skb_shinfo(skb)->frags[i];
2108 memcpy(imm_data,
2109 page_address(frag->page) + frag->page_offset,
2110 frag->size);
2111 imm_data += frag->size;
2112 }
2113 }
2114 swqe->immediate_data_length = skb->len;
2115 dev_kfree_skb(skb);
2116}
2117
18604c54
JBT		 2118static inline int ehea_hash_skb(struct sk_buff *skb, int num_qps)
2119{
2120 struct tcphdr *tcp;
2121 u32 tmp;
2122
2123 if ((skb->protocol == htons(ETH_P_IP)) &&
88ca2d07 2124 (ip_hdr(skb)->protocol == IPPROTO_TCP)) {
508d2b5d
DM		 2125 tcp = (struct tcphdr *)(skb_network_header(skb) +
2126 (ip_hdr(skb)->ihl * 4));
18604c54 2127 tmp = (tcp->source + (tcp->dest << 16)) % 31;
88ca2d07 2128 tmp += ip_hdr(skb)->daddr % 31;
18604c54 2129 return tmp % num_qps;
508d2b5d 2130 } else
18604c54
JBT		 2131 return 0;
2132}
2133
7a291083
JBT		 2134static int ehea_start_xmit(struct sk_buff *skb, struct net_device *dev)
2135{
2136 struct ehea_port *port = netdev_priv(dev);
2137 struct ehea_swqe *swqe;
2138 unsigned long flags;
2139 u32 lkey;
2140 int swqe_index;
18604c54
JBT		 2141 struct ehea_port_res *pr;
2142
2143 pr = &port->port_res[ehea_hash_skb(skb, port->num_tx_qps)];
2144
18604c54
JBT		 2145 if (!spin_trylock(&pr->xmit_lock))
2146 return NETDEV_TX_BUSY;
2147
2148 if (pr->queue_stopped) {
2149 spin_unlock(&pr->xmit_lock);
2150 return NETDEV_TX_BUSY;
2151 }
7a291083
JBT		 2152
2153 swqe = ehea_get_swqe(pr->qp, &swqe_index);
2154 memset(swqe, 0, SWQE_HEADER_SIZE);
2155 atomic_dec(&pr->swqe_avail);
2156
2157 if (skb->len <= SWQE3_MAX_IMM) {
2158 u32 sig_iv = port->sig_comp_iv;
2159 u32 swqe_num = pr->swqe_id_counter;
2160 ehea_xmit3(skb, dev, swqe);
2161 swqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE3_TYPE)
2162 | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, swqe_num);
2163 if (pr->swqe_ll_count >= (sig_iv - 1)) {
2164 swqe->wr_id |= EHEA_BMASK_SET(EHEA_WR_ID_REFILL,
2165 sig_iv);
2166 swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
2167 pr->swqe_ll_count = 0;
2168 } else
2169 pr->swqe_ll_count += 1;
2170 } else {
2171 swqe->wr_id =
2172 EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE2_TYPE)
2173 | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, pr->swqe_id_counter)
acbddb59 2174 | EHEA_BMASK_SET(EHEA_WR_ID_REFILL, 1)
7a291083
JBT		 2175 | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, pr->sq_skba.index);
2176 pr->sq_skba.arr[pr->sq_skba.index] = skb;
2177
2178 pr->sq_skba.index++;
2179 pr->sq_skba.index &= (pr->sq_skba.len - 1);
2180
2181 lkey = pr->send_mr.lkey;
2182 ehea_xmit2(skb, dev, swqe, lkey);
acbddb59 2183 swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
7a291083
JBT		 2184 }
2185 pr->swqe_id_counter += 1;
2186
2187 if (port->vgrp && vlan_tx_tag_present(skb)) {
2188 swqe->tx_control |= EHEA_SWQE_VLAN_INSERT;
2189 swqe->vlan_tag = vlan_tx_tag_get(skb);
2190 }
2191
2192 if (netif_msg_tx_queued(port)) {
2193 ehea_info("post swqe on QP %d", pr->qp->init_attr.qp_nr);
bff0a55f 2194 ehea_dump(swqe, 512, "swqe");
7a291083
JBT		 2195 }
2196
2c69448b
JBT		 2197 if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) {
2198 netif_stop_queue(dev);
2199 swqe->tx_control |= EHEA_SWQE_PURGE;
2200 }
44c82152 2201
7a291083 2202 ehea_post_swqe(pr->qp, swqe);
7393b87c 2203 pr->tx_packets++;
7a291083
JBT		 2204
2205 if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) {
2206 spin_lock_irqsave(&pr->netif_queue, flags);
2207 if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) {
acbddb59 2208 pr->p_stats.queue_stopped++;
7a291083
JBT		 2209 netif_stop_queue(dev);
2210 pr->queue_stopped = 1;
2211 }
2212 spin_unlock_irqrestore(&pr->netif_queue, flags);
2213 }
2214 dev->trans_start = jiffies;
2215 spin_unlock(&pr->xmit_lock);
2c69448b 2216
7a291083
JBT		 2217 return NETDEV_TX_OK;
2218}
2219
2220static void ehea_vlan_rx_register(struct net_device *dev,
2221 struct vlan_group *grp)
2222{
2223 struct ehea_port *port = netdev_priv(dev);
2224 struct ehea_adapter *adapter = port->adapter;
2225 struct hcp_ehea_port_cb1 *cb1;
2226 u64 hret;
2227
2228 port->vgrp = grp;
2229
3faf2693 2230 cb1 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083
JBT		 2231 if (!cb1) {
2232 ehea_error("no mem for cb1");
2233 goto out;
2234 }
2235
7a291083
JBT		 2236 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
2237 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2238 if (hret != H_SUCCESS)
2239 ehea_error("modify_ehea_port failed");
2240
3faf2693 2241 free_page((unsigned long)cb1);
7a291083
JBT		 2242out:
2243 return;
2244}
2245
2246static void ehea_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
2247{
2248 struct ehea_port *port = netdev_priv(dev);
2249 struct ehea_adapter *adapter = port->adapter;
2250 struct hcp_ehea_port_cb1 *cb1;
2251 int index;
2252 u64 hret;
2253
3faf2693 2254 cb1 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083
JBT		 2255 if (!cb1) {
2256 ehea_error("no mem for cb1");
2257 goto out;
2258 }
2259
2260 hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
2261 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2262 if (hret != H_SUCCESS) {
2263 ehea_error("query_ehea_port failed");
2264 goto out;
2265 }
2266
2267 index = (vid / 64);
dec590c1 2268 cb1->vlan_filter[index] |= ((u64)(0x8000000000000000 >> (vid & 0x3F)));
7a291083
JBT		 2269
2270 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
2271 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2272 if (hret != H_SUCCESS)
2273 ehea_error("modify_ehea_port failed");
2274out:
3faf2693 2275 free_page((unsigned long)cb1);
7a291083
JBT		 2276 return;
2277}
2278
2279static void ehea_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
2280{
2281 struct ehea_port *port = netdev_priv(dev);
2282 struct ehea_adapter *adapter = port->adapter;
2283 struct hcp_ehea_port_cb1 *cb1;
2284 int index;
2285 u64 hret;
2286
5c15bdec 2287 vlan_group_set_device(port->vgrp, vid, NULL);
7a291083 2288
3faf2693 2289 cb1 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083
JBT		 2290 if (!cb1) {
2291 ehea_error("no mem for cb1");
2292 goto out;
2293 }
2294
2295 hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
2296 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2297 if (hret != H_SUCCESS) {
2298 ehea_error("query_ehea_port failed");
2299 goto out;
2300 }
2301
2302 index = (vid / 64);
dec590c1 2303 cb1->vlan_filter[index] &= ~((u64)(0x8000000000000000 >> (vid & 0x3F)));
7a291083
JBT		 2304
2305 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
2306 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2307 if (hret != H_SUCCESS)
2308 ehea_error("modify_ehea_port failed");
2309out:
3faf2693 2310 free_page((unsigned long)cb1);
7a291083
JBT		 2311 return;
2312}
2313
2314int ehea_activate_qp(struct ehea_adapter *adapter, struct ehea_qp *qp)
2315{
2316 int ret = -EIO;
2317 u64 hret;
2318 u16 dummy16 = 0;
2319 u64 dummy64 = 0;
508d2b5d 2320 struct hcp_modify_qp_cb0 *cb0;
7a291083 2321
3faf2693 2322 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083
JBT		 2323 if (!cb0) {
2324 ret = -ENOMEM;
2325 goto out;
2326 }
2327
2328 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2329 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2330 if (hret != H_SUCCESS) {
2331 ehea_error("query_ehea_qp failed (1)");
2332 goto out;
2333 }
2334
2335 cb0->qp_ctl_reg = H_QP_CR_STATE_INITIALIZED;
2336 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2337 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2338 &dummy64, &dummy64, &dummy16, &dummy16);
2339 if (hret != H_SUCCESS) {
2340 ehea_error("modify_ehea_qp failed (1)");
2341 goto out;
2342 }
2343
2344 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2345 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2346 if (hret != H_SUCCESS) {
2347 ehea_error("query_ehea_qp failed (2)");
2348 goto out;
2349 }
2350
2351 cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_INITIALIZED;
2352 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2353 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2354 &dummy64, &dummy64, &dummy16, &dummy16);
2355 if (hret != H_SUCCESS) {
2356 ehea_error("modify_ehea_qp failed (2)");
2357 goto out;
2358 }
2359
2360 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2361 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2362 if (hret != H_SUCCESS) {
2363 ehea_error("query_ehea_qp failed (3)");
2364 goto out;
2365 }
2366
2367 cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_RDY2SND;
2368 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2369 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2370 &dummy64, &dummy64, &dummy16, &dummy16);
2371 if (hret != H_SUCCESS) {
2372 ehea_error("modify_ehea_qp failed (3)");
2373 goto out;
2374 }
2375
2376 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2377 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2378 if (hret != H_SUCCESS) {
2379 ehea_error("query_ehea_qp failed (4)");
2380 goto out;
2381 }
2382
2383 ret = 0;
2384out:
3faf2693 2385 free_page((unsigned long)cb0);
7a291083
JBT		 2386 return ret;
2387}
2388
2389static int ehea_port_res_setup(struct ehea_port *port, int def_qps,
2390 int add_tx_qps)
2391{
2392 int ret, i;
2393 struct port_res_cfg pr_cfg, pr_cfg_small_rx;
2394 enum ehea_eq_type eq_type = EHEA_EQ;
2395
2396 port->qp_eq = ehea_create_eq(port->adapter, eq_type,
2397 EHEA_MAX_ENTRIES_EQ, 1);
2398 if (!port->qp_eq) {
2399 ret = -EINVAL;
2400 ehea_error("ehea_create_eq failed (qp_eq)");
2401 goto out_kill_eq;
2402 }
2403
2404 pr_cfg.max_entries_rcq = rq1_entries + rq2_entries + rq3_entries;
18604c54 2405 pr_cfg.max_entries_scq = sq_entries * 2;
7a291083
JBT		 2406 pr_cfg.max_entries_sq = sq_entries;
2407 pr_cfg.max_entries_rq1 = rq1_entries;
2408 pr_cfg.max_entries_rq2 = rq2_entries;
2409 pr_cfg.max_entries_rq3 = rq3_entries;
2410
2411 pr_cfg_small_rx.max_entries_rcq = 1;
2412 pr_cfg_small_rx.max_entries_scq = sq_entries;
2413 pr_cfg_small_rx.max_entries_sq = sq_entries;
2414 pr_cfg_small_rx.max_entries_rq1 = 1;
2415 pr_cfg_small_rx.max_entries_rq2 = 1;
2416 pr_cfg_small_rx.max_entries_rq3 = 1;
2417
2418 for (i = 0; i < def_qps; i++) {
2419 ret = ehea_init_port_res(port, &port->port_res[i], &pr_cfg, i);
2420 if (ret)
2421 goto out_clean_pr;
2422 }
2423 for (i = def_qps; i < def_qps + add_tx_qps; i++) {
2424 ret = ehea_init_port_res(port, &port->port_res[i],
2425 &pr_cfg_small_rx, i);
2426 if (ret)
2427 goto out_clean_pr;
2428 }
2429
2430 return 0;
2431
2432out_clean_pr:
2433 while (--i >= 0)
2434 ehea_clean_portres(port, &port->port_res[i]);
2435
2436out_kill_eq:
2437 ehea_destroy_eq(port->qp_eq);
2438 return ret;
2439}
2440
2441static int ehea_clean_all_portres(struct ehea_port *port)
2442{
2443 int ret = 0;
2444 int i;
2445
508d2b5d 2446 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
7a291083
JBT		 2447 ret |= ehea_clean_portres(port, &port->port_res[i]);
2448
2449 ret |= ehea_destroy_eq(port->qp_eq);
2450
2451 return ret;
2452}
2453
35cf2e2e 2454static void ehea_remove_adapter_mr(struct ehea_adapter *adapter)
1211bb6d 2455{
35cf2e2e
TK		 2456 if (adapter->active_ports)
2457 return;
1211bb6d
TK		 2458
2459 ehea_rem_mr(&adapter->mr);
2460}
2461
35cf2e2e 2462static int ehea_add_adapter_mr(struct ehea_adapter *adapter)
1211bb6d 2463{
35cf2e2e
TK		 2464 if (adapter->active_ports)
2465 return 0;
1211bb6d
TK		 2466
2467 return ehea_reg_kernel_mr(adapter, &adapter->mr);
2468}
2469
7a291083
JBT		 2470static int ehea_up(struct net_device *dev)
2471{
2472 int ret, i;
2473 struct ehea_port *port = netdev_priv(dev);
7a291083
JBT		 2474
2475 if (port->state == EHEA_PORT_UP)
2476 return 0;
2477
2478 ret = ehea_port_res_setup(port, port->num_def_qps,
2479 port->num_add_tx_qps);
2480 if (ret) {
2481 ehea_error("port_res_failed");
2482 goto out;
2483 }
2484
2485 /* Set default QP for this port */
2486 ret = ehea_configure_port(port);
2487 if (ret) {
2488 ehea_error("ehea_configure_port failed. ret:%d", ret);
2489 goto out_clean_pr;
2490 }
2491
7a291083
JBT		 2492 ret = ehea_reg_interrupts(dev);
2493 if (ret) {
f9e29228
TK		 2494 ehea_error("reg_interrupts failed. ret:%d", ret);
2495 goto out_clean_pr;
7a291083
JBT		 2496 }
2497
508d2b5d 2498 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
7a291083
JBT		 2499 ret = ehea_activate_qp(port->adapter, port->port_res[i].qp);
2500 if (ret) {
2501 ehea_error("activate_qp failed");
2502 goto out_free_irqs;
2503 }
2504 }
2505
508d2b5d 2506 for (i = 0; i < port->num_def_qps; i++) {
7a291083
JBT		 2507 ret = ehea_fill_port_res(&port->port_res[i]);
2508 if (ret) {
2509 ehea_error("out_free_irqs");
2510 goto out_free_irqs;
2511 }
2512 }
2513
21eee2dd
TK		 2514 ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
2515 if (ret) {
2516 ret = -EIO;
2517 goto out_free_irqs;
2518 }
2519
7a291083 2520 port->state = EHEA_PORT_UP;
21eee2dd
TK		 2521
2522 ret = 0;
7a291083
JBT		 2523 goto out;
2524
2525out_free_irqs:
2526 ehea_free_interrupts(dev);
2527
7a291083
JBT		 2528out_clean_pr:
2529 ehea_clean_all_portres(port);
2530out:
44c82152
TK		 2531 if (ret)
2532 ehea_info("Failed starting %s. ret=%i", dev->name, ret);
2533
21eee2dd 2534 ehea_update_bcmc_registrations();
21eee2dd 2535 ehea_update_firmware_handles();
21eee2dd 2536
7a291083
JBT		 2537 return ret;
2538}
2539
bea3348e
SH		 2540static void port_napi_disable(struct ehea_port *port)
2541{
2542 int i;
2543
0173b793 2544 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
bea3348e
SH		 2545 napi_disable(&port->port_res[i].napi);
2546}
2547
2548static void port_napi_enable(struct ehea_port *port)
2549{
2550 int i;
2551
0173b793 2552 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
bea3348e
SH		 2553 napi_enable(&port->port_res[i].napi);
2554}
2555
7a291083
JBT		 2556static int ehea_open(struct net_device *dev)
2557{
2558 int ret;
2559 struct ehea_port *port = netdev_priv(dev);
2560
a5af6ad3 2561 mutex_lock(&port->port_lock);
7a291083
JBT		 2562
2563 if (netif_msg_ifup(port))
2564 ehea_info("enabling port %s", dev->name);
2565
2566 ret = ehea_up(dev);
bea3348e
SH		 2567 if (!ret) {
2568 port_napi_enable(port);
7a291083 2569 netif_start_queue(dev);
bea3348e 2570 }
7a291083 2571
a5af6ad3 2572 mutex_unlock(&port->port_lock);
7a291083
JBT		 2573
2574 return ret;
2575}
2576
2577static int ehea_down(struct net_device *dev)
2578{
bea3348e 2579 int ret;
7a291083
JBT		 2580 struct ehea_port *port = netdev_priv(dev);
2581
2582 if (port->state == EHEA_PORT_DOWN)
2583 return 0;
2584
2585 ehea_drop_multicast_list(dev);
21eee2dd
TK		 2586 ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
2587
7a291083
JBT		 2588 ehea_free_interrupts(dev);
2589
7a291083 2590 port->state = EHEA_PORT_DOWN;
44c82152 2591
21eee2dd 2592 ehea_update_bcmc_registrations();
21eee2dd 2593
44c82152
TK		 2594 ret = ehea_clean_all_portres(port);
2595 if (ret)
2596 ehea_info("Failed freeing resources for %s. ret=%i",
2597 dev->name, ret);
2598
21eee2dd 2599 ehea_update_firmware_handles();
21eee2dd 2600
7a291083
JBT		 2601 return ret;
2602}
2603
2604static int ehea_stop(struct net_device *dev)
2605{
2606 int ret;
2607 struct ehea_port *port = netdev_priv(dev);
2608
2609 if (netif_msg_ifdown(port))
2610 ehea_info("disabling port %s", dev->name);
2611
2f69ae01 2612 set_bit(__EHEA_DISABLE_PORT_RESET, &port->flags);
4bb073c0 2613 cancel_work_sync(&port->reset_task);
a5af6ad3 2614 mutex_lock(&port->port_lock);
7a291083 2615 netif_stop_queue(dev);
0173b793 2616 port_napi_disable(port);
7a291083 2617 ret = ehea_down(dev);
a5af6ad3 2618 mutex_unlock(&port->port_lock);
2f69ae01 2619 clear_bit(__EHEA_DISABLE_PORT_RESET, &port->flags);
7a291083
JBT		 2620 return ret;
2621}
2622
22559c5d 2623static void ehea_purge_sq(struct ehea_qp *orig_qp)
2c69448b
JBT		 2624{
2625 struct ehea_qp qp = *orig_qp;
2626 struct ehea_qp_init_attr *init_attr = &qp.init_attr;
2627 struct ehea_swqe *swqe;
2628 int wqe_index;
2629 int i;
2630
2631 for (i = 0; i < init_attr->act_nr_send_wqes; i++) {
2632 swqe = ehea_get_swqe(&qp, &wqe_index);
2633 swqe->tx_control |= EHEA_SWQE_PURGE;
2634 }
2635}
2636
22559c5d 2637static void ehea_flush_sq(struct ehea_port *port)
44fb3126
TK		 2638{
2639 int i;
2640
2641 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
2642 struct ehea_port_res *pr = &port->port_res[i];
2643 int swqe_max = pr->sq_skba_size - 2 - pr->swqe_ll_count;
2644 int k = 0;
2645 while (atomic_read(&pr->swqe_avail) < swqe_max) {
2646 msleep(5);
2647 if (++k == 20)
2648 break;
2649 }
2650 }
2651}
2652
2c69448b
JBT		 2653int ehea_stop_qps(struct net_device *dev)
2654{
2655 struct ehea_port *port = netdev_priv(dev);
2656 struct ehea_adapter *adapter = port->adapter;
508d2b5d 2657 struct hcp_modify_qp_cb0 *cb0;
2c69448b
JBT		 2658 int ret = -EIO;
2659 int dret;
2660 int i;
2661 u64 hret;
2662 u64 dummy64 = 0;
2663 u16 dummy16 = 0;
2664
3faf2693 2665 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
2c69448b
JBT		 2666 if (!cb0) {
2667 ret = -ENOMEM;
2668 goto out;
2669 }
2670
2671 for (i = 0; i < (port->num_def_qps + port->num_add_tx_qps); i++) {
2672 struct ehea_port_res *pr = &port->port_res[i];
2673 struct ehea_qp *qp = pr->qp;
2674
2675 /* Purge send queue */
2676 ehea_purge_sq(qp);
2677
2678 /* Disable queue pair */
2679 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2680 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2681 cb0);
2682 if (hret != H_SUCCESS) {
2683 ehea_error("query_ehea_qp failed (1)");
2684 goto out;
2685 }
2686
2687 cb0->qp_ctl_reg = (cb0->qp_ctl_reg & H_QP_CR_RES_STATE) << 8;
2688 cb0->qp_ctl_reg &= ~H_QP_CR_ENABLED;
2689
2690 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2691 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG,
2692 1), cb0, &dummy64,
2693 &dummy64, &dummy16, &dummy16);
2694 if (hret != H_SUCCESS) {
2695 ehea_error("modify_ehea_qp failed (1)");
2696 goto out;
2697 }
2698
2699 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2700 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2701 cb0);
2702 if (hret != H_SUCCESS) {
2703 ehea_error("query_ehea_qp failed (2)");
2704 goto out;
2705 }
2706
2707 /* deregister shared memory regions */
2708 dret = ehea_rem_smrs(pr);
2709 if (dret) {
2710 ehea_error("unreg shared memory region failed");
2711 goto out;
2712 }
2713 }
2714
2715 ret = 0;
2716out:
3faf2693 2717 free_page((unsigned long)cb0);
2c69448b
JBT		 2718
2719 return ret;
2720}
2721
508d2b5d 2722void ehea_update_rqs(struct ehea_qp *orig_qp, struct ehea_port_res *pr)
2c69448b
JBT		 2723{
2724 struct ehea_qp qp = *orig_qp;
2725 struct ehea_qp_init_attr *init_attr = &qp.init_attr;
2726 struct ehea_rwqe *rwqe;
2727 struct sk_buff **skba_rq2 = pr->rq2_skba.arr;
2728 struct sk_buff **skba_rq3 = pr->rq3_skba.arr;
2729 struct sk_buff *skb;
2730 u32 lkey = pr->recv_mr.lkey;
2731
2732
2733 int i;
2734 int index;
2735
2736 for (i = 0; i < init_attr->act_nr_rwqes_rq2 + 1; i++) {
2737 rwqe = ehea_get_next_rwqe(&qp, 2);
2738 rwqe->sg_list[0].l_key = lkey;
2739 index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, rwqe->wr_id);
2740 skb = skba_rq2[index];
2741 if (skb)
2742 rwqe->sg_list[0].vaddr = ehea_map_vaddr(skb->data);
2743 }
2744
2745 for (i = 0; i < init_attr->act_nr_rwqes_rq3 + 1; i++) {
2746 rwqe = ehea_get_next_rwqe(&qp, 3);
2747 rwqe->sg_list[0].l_key = lkey;
2748 index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, rwqe->wr_id);
2749 skb = skba_rq3[index];
2750 if (skb)
2751 rwqe->sg_list[0].vaddr = ehea_map_vaddr(skb->data);
2752 }
2753}
2754
2755int ehea_restart_qps(struct net_device *dev)
2756{
2757 struct ehea_port *port = netdev_priv(dev);
2758 struct ehea_adapter *adapter = port->adapter;
2759 int ret = 0;
2760 int i;
2761
508d2b5d 2762 struct hcp_modify_qp_cb0 *cb0;
2c69448b
JBT		 2763 u64 hret;
2764 u64 dummy64 = 0;
2765 u16 dummy16 = 0;
2766
3faf2693 2767 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
2c69448b
JBT		 2768 if (!cb0) {
2769 ret = -ENOMEM;
2770 goto out;
2771 }
2772
2773 for (i = 0; i < (port->num_def_qps + port->num_add_tx_qps); i++) {
2774 struct ehea_port_res *pr = &port->port_res[i];
2775 struct ehea_qp *qp = pr->qp;
2776
2777 ret = ehea_gen_smrs(pr);
2778 if (ret) {
2779 ehea_error("creation of shared memory regions failed");
2780 goto out;
2781 }
2782
2783 ehea_update_rqs(qp, pr);
2784
2785 /* Enable queue pair */
2786 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2787 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2788 cb0);
2789 if (hret != H_SUCCESS) {
2790 ehea_error("query_ehea_qp failed (1)");
2791 goto out;
2792 }
2793
2794 cb0->qp_ctl_reg = (cb0->qp_ctl_reg & H_QP_CR_RES_STATE) << 8;
2795 cb0->qp_ctl_reg |= H_QP_CR_ENABLED;
2796
2797 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2798 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG,
2799 1), cb0, &dummy64,
2800 &dummy64, &dummy16, &dummy16);
2801 if (hret != H_SUCCESS) {
2802 ehea_error("modify_ehea_qp failed (1)");
2803 goto out;
2804 }
2805
2806 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2807 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2808 cb0);
2809 if (hret != H_SUCCESS) {
2810 ehea_error("query_ehea_qp failed (2)");
2811 goto out;
2812 }
2813
2814 /* refill entire queue */
2815 ehea_refill_rq1(pr, pr->rq1_skba.index, 0);
2816 ehea_refill_rq2(pr, 0);
2817 ehea_refill_rq3(pr, 0);
2818 }
2819out:
3faf2693 2820 free_page((unsigned long)cb0);
2c69448b
JBT		 2821
2822 return ret;
2823}
2824
c4028958 2825static void ehea_reset_port(struct work_struct *work)
7a291083
JBT		 2826{
2827 int ret;
c4028958
DH		 2828 struct ehea_port *port =
2829 container_of(work, struct ehea_port, reset_task);
2830 struct net_device *dev = port->netdev;
7a291083
JBT		 2831
2832 port->resets++;
a5af6ad3 2833 mutex_lock(&port->port_lock);
7a291083 2834 netif_stop_queue(dev);
bea3348e
SH		 2835
2836 port_napi_disable(port);
7a291083 2837
44c82152 2838 ehea_down(dev);
7a291083
JBT		 2839
2840 ret = ehea_up(dev);
44c82152 2841 if (ret)
7a291083 2842 goto out;
7a291083 2843
2c69448b
JBT		 2844 ehea_set_multicast_list(dev);
2845
7a291083
JBT		 2846 if (netif_msg_timer(port))
2847 ehea_info("Device %s resetted successfully", dev->name);
2848
bea3348e
SH		 2849 port_napi_enable(port);
2850
7a291083
JBT		 2851 netif_wake_queue(dev);
2852out:
a5af6ad3 2853 mutex_unlock(&port->port_lock);
7a291083
JBT		 2854 return;
2855}
2856
44c82152
TK		 2857static void ehea_rereg_mrs(struct work_struct *work)
2858{
2859 int ret, i;
2860 struct ehea_adapter *adapter;
2861
06f89edf 2862 mutex_lock(&dlpar_mem_lock);
d4f12daf 2863 ehea_info("LPAR memory changed - re-initializing driver");
44c82152
TK		 2864
2865 list_for_each_entry(adapter, &adapter_list, list)
2866 if (adapter->active_ports) {
2867 /* Shutdown all ports */
2868 for (i = 0; i < EHEA_MAX_PORTS; i++) {
2869 struct ehea_port *port = adapter->port[i];
a5af6ad3 2870 struct net_device *dev;
44c82152 2871
a5af6ad3
DW		 2872 if (!port)
2873 continue;
44c82152 2874
a5af6ad3
DW		 2875 dev = port->netdev;
2876
2877 if (dev->flags & IFF_UP) {
2878 mutex_lock(&port->port_lock);
2879 netif_stop_queue(dev);
df39e8ba 2880 ehea_flush_sq(port);
a5af6ad3
DW		 2881 ret = ehea_stop_qps(dev);
2882 if (ret) {
2883 mutex_unlock(&port->port_lock);
2884 goto out;
44c82152 2885 }
a5af6ad3
DW		 2886 port_napi_disable(port);
2887 mutex_unlock(&port->port_lock);
44c82152
TK		 2888 }
2889 }
2890
2891 /* Unregister old memory region */
2892 ret = ehea_rem_mr(&adapter->mr);
2893 if (ret) {
2894 ehea_error("unregister MR failed - driver"
2895 " inoperable!");
2896 goto out;
2897 }
2898 }
2899
44c82152
TK		 2900 clear_bit(__EHEA_STOP_XFER, &ehea_driver_flags);
2901
2902 list_for_each_entry(adapter, &adapter_list, list)
2903 if (adapter->active_ports) {
2904 /* Register new memory region */
2905 ret = ehea_reg_kernel_mr(adapter, &adapter->mr);
2906 if (ret) {
2907 ehea_error("register MR failed - driver"
2908 " inoperable!");
2909 goto out;
2910 }
2911
2912 /* Restart all ports */
2913 for (i = 0; i < EHEA_MAX_PORTS; i++) {
2914 struct ehea_port *port = adapter->port[i];
2915
2916 if (port) {
2917 struct net_device *dev = port->netdev;
2918
2919 if (dev->flags & IFF_UP) {
a5af6ad3 2920 mutex_lock(&port->port_lock);
2c69448b
JBT		 2921 port_napi_enable(port);
2922 ret = ehea_restart_qps(dev);
2923 if (!ret)
44c82152 2924 netif_wake_queue(dev);
a5af6ad3 2925 mutex_unlock(&port->port_lock);
44c82152
TK		 2926 }
2927 }
2928 }
2929 }
68905eb4 2930 ehea_info("re-initializing driver complete");
44c82152 2931out:
68905eb4 2932 mutex_unlock(&dlpar_mem_lock);
44c82152
TK		 2933 return;
2934}
2935
7a291083
JBT		 2936static void ehea_tx_watchdog(struct net_device *dev)
2937{
2938 struct ehea_port *port = netdev_priv(dev);
2939
2c69448b
JBT		 2940 if (netif_carrier_ok(dev) &&
2941 !test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))
2f69ae01 2942 ehea_schedule_port_reset(port);
7a291083
JBT		 2943}
2944
2945int ehea_sense_adapter_attr(struct ehea_adapter *adapter)
2946{
2947 struct hcp_query_ehea *cb;
2948 u64 hret;
2949 int ret;
2950
3faf2693 2951 cb = (void *)get_zeroed_page(GFP_KERNEL);
7a291083
JBT		 2952 if (!cb) {
2953 ret = -ENOMEM;
2954 goto out;
2955 }
2956
2957 hret = ehea_h_query_ehea(adapter->handle, cb);
2958
2959 if (hret != H_SUCCESS) {
2960 ret = -EIO;
2961 goto out_herr;
2962 }
2963
7a291083
JBT		 2964 adapter->max_mc_mac = cb->max_mc_mac - 1;
2965 ret = 0;
2966
2967out_herr:
3faf2693 2968 free_page((unsigned long)cb);
7a291083
JBT		 2969out:
2970 return ret;
2971}
2972
1acf2318 2973int ehea_get_jumboframe_status(struct ehea_port *port, int *jumbo)
7a291083 2974{
7a291083 2975 struct hcp_ehea_port_cb4 *cb4;
1acf2318
JBT		 2976 u64 hret;
2977 int ret = 0;
7a291083 2978
1acf2318 2979 *jumbo = 0;
7a291083 2980
1acf2318 2981 /* (Try to) enable *jumbo frames */
3faf2693 2982 cb4 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083
JBT		 2983 if (!cb4) {
2984 ehea_error("no mem for cb4");
1acf2318
JBT		 2985 ret = -ENOMEM;
2986 goto out;
7a291083 2987 } else {
1acf2318 2988 hret = ehea_h_query_ehea_port(port->adapter->handle,
9c750b7d
TK		 2989 port->logical_port_id,
2990 H_PORT_CB4,
2991 H_PORT_CB4_JUMBO, cb4);
9c750b7d
TK		 2992 if (hret == H_SUCCESS) {
2993 if (cb4->jumbo_frame)
1acf2318 2994 *jumbo = 1;
9c750b7d
TK		 2995 else {
2996 cb4->jumbo_frame = 1;
1acf2318
JBT		 2997 hret = ehea_h_modify_ehea_port(port->adapter->
2998 handle,
9c750b7d 2999 port->
1acf2318 3000 logical_port_id,
9c750b7d
TK		 3001 H_PORT_CB4,
3002 H_PORT_CB4_JUMBO,
3003 cb4);
3004 if (hret == H_SUCCESS)
1acf2318 3005 *jumbo = 1;
9c750b7d 3006 }
1acf2318
JBT		 3007 } else
3008 ret = -EINVAL;
3009
3faf2693 3010 free_page((unsigned long)cb4);
7a291083 3011 }
1acf2318
JBT		 3012out:
3013 return ret;
3014}
3015
3016static ssize_t ehea_show_port_id(struct device *dev,
3017 struct device_attribute *attr, char *buf)
3018{
3019 struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev);
a8e34fda 3020 return sprintf(buf, "%d", port->logical_port_id);
1acf2318
JBT		 3021}
3022
3023static DEVICE_ATTR(log_port_id, S_IRUSR | S_IRGRP | S_IROTH, ehea_show_port_id,
3024 NULL);
3025
3026static void __devinit logical_port_release(struct device *dev)
3027{
3028 struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev);
3029 of_node_put(port->ofdev.node);
3030}
3031
3032static struct device *ehea_register_port(struct ehea_port *port,
3033 struct device_node *dn)
3034{
3035 int ret;
3036
3037 port->ofdev.node = of_node_get(dn);
6b08f3ae 3038 port->ofdev.dev.parent = &port->adapter->ofdev->dev;
d1dea38d 3039 port->ofdev.dev.bus = &ibmebus_bus_type;
1acf2318 3040
db1d7bf7 3041 dev_set_name(&port->ofdev.dev, "port%d", port_name_cnt++);
1acf2318
JBT		 3042 port->ofdev.dev.release = logical_port_release;
3043
3044 ret = of_device_register(&port->ofdev);
3045 if (ret) {
3046 ehea_error("failed to register device. ret=%d", ret);
3047 goto out;
3048 }
3049
3050 ret = device_create_file(&port->ofdev.dev, &dev_attr_log_port_id);
d1d25aab 3051 if (ret) {
1acf2318
JBT		 3052 ehea_error("failed to register attributes, ret=%d", ret);
3053 goto out_unreg_of_dev;
3054 }
e542aa6b 3055
1acf2318
JBT		 3056 return &port->ofdev.dev;
3057
3058out_unreg_of_dev:
3059 of_device_unregister(&port->ofdev);
3060out:
3061 return NULL;
3062}
3063
3064static void ehea_unregister_port(struct ehea_port *port)
3065{
3066 device_remove_file(&port->ofdev.dev, &dev_attr_log_port_id);
3067 of_device_unregister(&port->ofdev);
3068}
3069
086c1b2c
TK		 3070static const struct net_device_ops ehea_netdev_ops = {
3071 .ndo_open = ehea_open,
3072 .ndo_stop = ehea_stop,
3073 .ndo_start_xmit = ehea_start_xmit,
3074#ifdef CONFIG_NET_POLL_CONTROLLER
3075 .ndo_poll_controller = ehea_netpoll,
3076#endif
3077 .ndo_get_stats = ehea_get_stats,
3078 .ndo_set_mac_address = ehea_set_mac_addr,
3079 .ndo_set_multicast_list = ehea_set_multicast_list,
3080 .ndo_change_mtu = ehea_change_mtu,
3081 .ndo_vlan_rx_register = ehea_vlan_rx_register,
3082 .ndo_vlan_rx_add_vid = ehea_vlan_rx_add_vid,
32e8f9a8
AB		 3083 .ndo_vlan_rx_kill_vid = ehea_vlan_rx_kill_vid,
3084 .ndo_tx_timeout = ehea_tx_watchdog,
086c1b2c
TK		 3085};
3086
1acf2318
JBT		 3087struct ehea_port *ehea_setup_single_port(struct ehea_adapter *adapter,
3088 u32 logical_port_id,
3089 struct device_node *dn)
3090{
3091 int ret;
3092 struct net_device *dev;
3093 struct ehea_port *port;
3094 struct device *port_dev;
3095 int jumbo;
3096
3097 /* allocate memory for the port structures */
3098 dev = alloc_etherdev(sizeof(struct ehea_port));
3099
3100 if (!dev) {
3101 ehea_error("no mem for net_device");
3102 ret = -ENOMEM;
3103 goto out_err;
3104 }
3105
3106 port = netdev_priv(dev);
3107
a5af6ad3 3108 mutex_init(&port->port_lock);
1acf2318
JBT		 3109 port->state = EHEA_PORT_DOWN;
3110 port->sig_comp_iv = sq_entries / 10;
3111
3112 port->adapter = adapter;
3113 port->netdev = dev;
3114 port->logical_port_id = logical_port_id;
3115
3116 port->msg_enable = netif_msg_init(msg_level, EHEA_MSG_DEFAULT);
3117
3118 port->mc_list = kzalloc(sizeof(struct ehea_mc_list), GFP_KERNEL);
3119 if (!port->mc_list) {
3120 ret = -ENOMEM;
3121 goto out_free_ethdev;
3122 }
3123
3124 INIT_LIST_HEAD(&port->mc_list->list);
3125
3126 ret = ehea_sense_port_attr(port);
3127 if (ret)
3128 goto out_free_mc_list;
3129
3130 port_dev = ehea_register_port(port, dn);
3131 if (!port_dev)
3132 goto out_free_mc_list;
3133
3134 SET_NETDEV_DEV(dev, port_dev);
7a291083
JBT		 3135
3136 /* initialize net_device structure */
7a291083
JBT		 3137 memcpy(dev->dev_addr, &port->mac_addr, ETH_ALEN);
3138
086c1b2c
TK		 3139 dev->netdev_ops = &ehea_netdev_ops;
3140 ehea_set_ethtool_ops(dev);
3141
7a291083 3142 dev->features = NETIF_F_SG | NETIF_F_FRAGLIST | NETIF_F_TSO
dc01c447 3143 | NETIF_F_HIGHDMA | NETIF_F_IP_CSUM | NETIF_F_HW_VLAN_TX
7a291083
JBT		 3144 | NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_FILTER
3145 | NETIF_F_LLTX;
7a291083
JBT		 3146 dev->watchdog_timeo = EHEA_WATCH_DOG_TIMEOUT;
3147
c4028958 3148 INIT_WORK(&port->reset_task, ehea_reset_port);
7a291083
JBT		 3149
3150 ret = register_netdev(dev);
3151 if (ret) {
3152 ehea_error("register_netdev failed. ret=%d", ret);
21eee2dd 3153 goto out_unreg_port;
7a291083
JBT		 3154 }
3155
d4dc4ec9
JBT		 3156 port->lro_max_aggr = lro_max_aggr;
3157
1acf2318 3158 ret = ehea_get_jumboframe_status(port, &jumbo);
e542aa6b 3159 if (ret)
1acf2318
JBT		 3160 ehea_error("failed determining jumbo frame status for %s",
3161 port->netdev->name);
3162
9c750b7d
TK		 3163 ehea_info("%s: Jumbo frames are %sabled", dev->name,
3164 jumbo == 1 ? "en" : "dis");
3165
44c82152
TK		 3166 adapter->active_ports++;
3167
1acf2318 3168 return port;
7a291083 3169
1acf2318
JBT		 3170out_unreg_port:
3171 ehea_unregister_port(port);
3172
3173out_free_mc_list:
7a291083 3174 kfree(port->mc_list);
1acf2318
JBT		 3175
3176out_free_ethdev:
3177 free_netdev(dev);
3178
3179out_err:
3180 ehea_error("setting up logical port with id=%d failed, ret=%d",
3181 logical_port_id, ret);
3182 return NULL;
3183}
3184
3185static void ehea_shutdown_single_port(struct ehea_port *port)
3186{
7fb1c2ac 3187 struct ehea_adapter *adapter = port->adapter;
1acf2318
JBT		 3188 unregister_netdev(port->netdev);
3189 ehea_unregister_port(port);
3190 kfree(port->mc_list);
3191 free_netdev(port->netdev);
7fb1c2ac 3192 adapter->active_ports--;
7a291083
JBT		 3193}
3194
3195static int ehea_setup_ports(struct ehea_adapter *adapter)
3196{
1acf2318
JBT		 3197 struct device_node *lhea_dn;
3198 struct device_node *eth_dn = NULL;
d1d25aab 3199
9f9a3b8a 3200 const u32 *dn_log_port_id;
1acf2318
JBT		 3201 int i = 0;
3202
6b08f3ae 3203 lhea_dn = adapter->ofdev->node;
1eef4e04 3204 while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) {
e542aa6b 3205
40cd3a45 3206 dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no",
d1d25aab 3207 NULL);
1acf2318
JBT		 3208 if (!dn_log_port_id) {
3209 ehea_error("bad device node: eth_dn name=%s",
3210 eth_dn->full_name);
3211 continue;
3212 }
7a291083 3213
1211bb6d
TK		 3214 if (ehea_add_adapter_mr(adapter)) {
3215 ehea_error("creating MR failed");
3216 of_node_put(eth_dn);
3217 return -EIO;
3218 }
3219
1acf2318
JBT		 3220 adapter->port[i] = ehea_setup_single_port(adapter,
3221 *dn_log_port_id,
3222 eth_dn);
7a291083 3223 if (adapter->port[i])
1acf2318 3224 ehea_info("%s -> logical port id #%d",
e542aa6b 3225 adapter->port[i]->netdev->name,
1acf2318 3226 *dn_log_port_id);
1211bb6d
TK		 3227 else
3228 ehea_remove_adapter_mr(adapter);
3229
1acf2318 3230 i++;
1eef4e04 3231 };
1211bb6d 3232 return 0;
1acf2318
JBT		 3233}
3234
e542aa6b
JBT		 3235static struct device_node *ehea_get_eth_dn(struct ehea_adapter *adapter,
3236 u32 logical_port_id)
1acf2318
JBT		 3237{
3238 struct device_node *lhea_dn;
3239 struct device_node *eth_dn = NULL;
9f9a3b8a 3240 const u32 *dn_log_port_id;
1acf2318 3241
6b08f3ae 3242 lhea_dn = adapter->ofdev->node;
1eef4e04 3243 while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) {
e542aa6b 3244
40cd3a45 3245 dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no",
d1d25aab 3246 NULL);
1acf2318
JBT		 3247 if (dn_log_port_id)
3248 if (*dn_log_port_id == logical_port_id)
3249 return eth_dn;
1eef4e04 3250 };
1acf2318
JBT		 3251
3252 return NULL;
3253}
3254
3255static ssize_t ehea_probe_port(struct device *dev,
3256 struct device_attribute *attr,
3257 const char *buf, size_t count)
3258{
3259 struct ehea_adapter *adapter = dev->driver_data;
3260 struct ehea_port *port;
3261 struct device_node *eth_dn = NULL;
3262 int i;
3263
3264 u32 logical_port_id;
3265
a8e34fda 3266 sscanf(buf, "%d", &logical_port_id);
1acf2318
JBT		 3267
3268 port = ehea_get_port(adapter, logical_port_id);
3269
3270 if (port) {
3271 ehea_info("adding port with logical port id=%d failed. port "
3272 "already configured as %s.", logical_port_id,
3273 port->netdev->name);
3274 return -EINVAL;
7a291083 3275 }
e542aa6b 3276
1acf2318 3277 eth_dn = ehea_get_eth_dn(adapter, logical_port_id);
7a291083 3278
1acf2318
JBT		 3279 if (!eth_dn) {
3280 ehea_info("no logical port with id %d found", logical_port_id);
3281 return -EINVAL;
3282 }
e542aa6b 3283
1211bb6d
TK		 3284 if (ehea_add_adapter_mr(adapter)) {
3285 ehea_error("creating MR failed");
3286 return -EIO;
3287 }
3288
1acf2318 3289 port = ehea_setup_single_port(adapter, logical_port_id, eth_dn);
7a291083 3290
1eef4e04
JBT		 3291 of_node_put(eth_dn);
3292
1acf2318 3293 if (port) {
508d2b5d 3294 for (i = 0; i < EHEA_MAX_PORTS; i++)
1acf2318
JBT		 3295 if (!adapter->port[i]) {
3296 adapter->port[i] = port;
3297 break;
3298 }
7a291083 3299
1acf2318
JBT		 3300 ehea_info("added %s (logical port id=%d)", port->netdev->name,
3301 logical_port_id);
1211bb6d
TK		 3302 } else {
3303 ehea_remove_adapter_mr(adapter);
e542aa6b 3304 return -EIO;
1211bb6d 3305 }
7a291083 3306
1acf2318
JBT		 3307 return (ssize_t) count;
3308}
3309
3310static ssize_t ehea_remove_port(struct device *dev,
3311 struct device_attribute *attr,
3312 const char *buf, size_t count)
3313{
3314 struct ehea_adapter *adapter = dev->driver_data;
3315 struct ehea_port *port;
3316 int i;
3317 u32 logical_port_id;
3318
a8e34fda 3319 sscanf(buf, "%d", &logical_port_id);
1acf2318
JBT		 3320
3321 port = ehea_get_port(adapter, logical_port_id);
3322
3323 if (port) {
3324 ehea_info("removed %s (logical port id=%d)", port->netdev->name,
3325 logical_port_id);
3326
3327 ehea_shutdown_single_port(port);
3328
508d2b5d 3329 for (i = 0; i < EHEA_MAX_PORTS; i++)
1acf2318
JBT		 3330 if (adapter->port[i] == port) {
3331 adapter->port[i] = NULL;
3332 break;
3333 }
3334 } else {
3335 ehea_error("removing port with logical port id=%d failed. port "
3336 "not configured.", logical_port_id);
3337 return -EINVAL;
3338 }
3339
1211bb6d
TK		 3340 ehea_remove_adapter_mr(adapter);
3341
1acf2318
JBT		 3342 return (ssize_t) count;
3343}
3344
3345static DEVICE_ATTR(probe_port, S_IWUSR, NULL, ehea_probe_port);
3346static DEVICE_ATTR(remove_port, S_IWUSR, NULL, ehea_remove_port);
3347
6b08f3ae 3348int ehea_create_device_sysfs(struct of_device *dev)
1acf2318 3349{
6b08f3ae 3350 int ret = device_create_file(&dev->dev, &dev_attr_probe_port);
1acf2318
JBT		 3351 if (ret)
3352 goto out;
3353
6b08f3ae 3354 ret = device_create_file(&dev->dev, &dev_attr_remove_port);
1acf2318 3355out:
7a291083
JBT		 3356 return ret;
3357}
3358
6b08f3ae 3359void ehea_remove_device_sysfs(struct of_device *dev)
1acf2318 3360{
6b08f3ae
JF		 3361 device_remove_file(&dev->dev, &dev_attr_probe_port);
3362 device_remove_file(&dev->dev, &dev_attr_remove_port);
1acf2318
JBT		 3363}
3364
6b08f3ae 3365static int __devinit ehea_probe_adapter(struct of_device *dev,
1acf2318 3366 const struct of_device_id *id)
7a291083
JBT		 3367{
3368 struct ehea_adapter *adapter;
9f9a3b8a 3369 const u64 *adapter_handle;
7a291083
JBT		 3370 int ret;
3371
6b08f3ae 3372 if (!dev || !dev->node) {
1eef4e04
JBT		 3373 ehea_error("Invalid ibmebus device probed");
3374 return -EINVAL;
3375 }
3376
7a291083
JBT		 3377 adapter = kzalloc(sizeof(*adapter), GFP_KERNEL);
3378 if (!adapter) {
3379 ret = -ENOMEM;
6b08f3ae 3380 dev_err(&dev->dev, "no mem for ehea_adapter\n");
7a291083
JBT		 3381 goto out;
3382 }
3383
44c82152
TK		 3384 list_add(&adapter->list, &adapter_list);
3385
6b08f3ae 3386 adapter->ofdev = dev;
1acf2318 3387
6b08f3ae 3388 adapter_handle = of_get_property(dev->node, "ibm,hea-handle",
d1d25aab 3389 NULL);
061bf3cd
TK		 3390 if (adapter_handle)
3391 adapter->handle = *adapter_handle;
3392
3393 if (!adapter->handle) {
6b08f3ae
JF		 3394 dev_err(&dev->dev, "failed getting handle for adapter"
3395 " '%s'\n", dev->node->full_name);
7a291083
JBT		 3396 ret = -ENODEV;
3397 goto out_free_ad;
3398 }
3399
7a291083
JBT		 3400 adapter->pd = EHEA_PD_ID;
3401
6b08f3ae 3402 dev->dev.driver_data = adapter;
7a291083 3403
7a291083
JBT		 3404
3405 /* initialize adapter and ports */
3406 /* get adapter properties */
3407 ret = ehea_sense_adapter_attr(adapter);
3408 if (ret) {
898eb71c 3409 dev_err(&dev->dev, "sense_adapter_attr failed: %d\n", ret);
1211bb6d 3410 goto out_free_ad;
7a291083 3411 }
7a291083
JBT		 3412
3413 adapter->neq = ehea_create_eq(adapter,
3414 EHEA_NEQ, EHEA_MAX_ENTRIES_EQ, 1);
3415 if (!adapter->neq) {
1eef4e04 3416 ret = -EIO;
898eb71c 3417 dev_err(&dev->dev, "NEQ creation failed\n");
1211bb6d 3418 goto out_free_ad;
7a291083
JBT		 3419 }
3420
3421 tasklet_init(&adapter->neq_tasklet, ehea_neq_tasklet,
3422 (unsigned long)adapter);
3423
6b08f3ae 3424 ret = ibmebus_request_irq(adapter->neq->attr.ist1,
38515e90 3425 ehea_interrupt_neq, IRQF_DISABLED,
7a291083
JBT		 3426 "ehea_neq", adapter);
3427 if (ret) {
898eb71c 3428 dev_err(&dev->dev, "requesting NEQ IRQ failed\n");
7a291083
JBT		 3429 goto out_kill_eq;
3430 }
3431
1eef4e04
JBT		 3432 ret = ehea_create_device_sysfs(dev);
3433 if (ret)
3bf76b81 3434 goto out_free_irq;
1acf2318 3435
7a291083
JBT		 3436 ret = ehea_setup_ports(adapter);
3437 if (ret) {
898eb71c 3438 dev_err(&dev->dev, "setup_ports failed\n");
1acf2318 3439 goto out_rem_dev_sysfs;
7a291083
JBT		 3440 }
3441
3442 ret = 0;
3443 goto out;
3444
1acf2318
JBT		 3445out_rem_dev_sysfs:
3446 ehea_remove_device_sysfs(dev);
3447
7a291083 3448out_free_irq:
6b08f3ae 3449 ibmebus_free_irq(adapter->neq->attr.ist1, adapter);
7a291083
JBT		 3450
3451out_kill_eq:
3452 ehea_destroy_eq(adapter->neq);
3453
7a291083 3454out_free_ad:
51621fbd 3455 list_del(&adapter->list);
7a291083 3456 kfree(adapter);
21eee2dd 3457
7a291083 3458out:
21eee2dd 3459 ehea_update_firmware_handles();
52e21b1b 3460
7a291083
JBT		 3461 return ret;
3462}
3463
6b08f3ae 3464static int __devexit ehea_remove(struct of_device *dev)
7a291083 3465{
6b08f3ae 3466 struct ehea_adapter *adapter = dev->dev.driver_data;
7a291083
JBT		 3467 int i;
3468
1acf2318 3469 for (i = 0; i < EHEA_MAX_PORTS; i++)
7a291083
JBT		 3470 if (adapter->port[i]) {
3471 ehea_shutdown_single_port(adapter->port[i]);
3472 adapter->port[i] = NULL;
3473 }
1acf2318
JBT		 3474
3475 ehea_remove_device_sysfs(dev);
3476
3bf76b81 3477 flush_scheduled_work();
7a291083 3478
6b08f3ae 3479 ibmebus_free_irq(adapter->neq->attr.ist1, adapter);
d4150a27 3480 tasklet_kill(&adapter->neq_tasklet);
7a291083
JBT		 3481
3482 ehea_destroy_eq(adapter->neq);
1211bb6d 3483 ehea_remove_adapter_mr(adapter);
44c82152 3484 list_del(&adapter->list);
7a291083 3485 kfree(adapter);
44c82152 3486
21eee2dd 3487 ehea_update_firmware_handles();
21eee2dd 3488
7a291083
JBT		 3489 return 0;
3490}
3491
21eee2dd
TK		 3492void ehea_crash_handler(void)
3493{
3494 int i;
3495
3496 if (ehea_fw_handles.arr)
3497 for (i = 0; i < ehea_fw_handles.num_entries; i++)
3498 ehea_h_free_resource(ehea_fw_handles.arr[i].adh,
3499 ehea_fw_handles.arr[i].fwh,
3500 FORCE_FREE);
3501
3502 if (ehea_bcmc_regs.arr)
3503 for (i = 0; i < ehea_bcmc_regs.num_entries; i++)
3504 ehea_h_reg_dereg_bcmc(ehea_bcmc_regs.arr[i].adh,
3505 ehea_bcmc_regs.arr[i].port_id,
3506 ehea_bcmc_regs.arr[i].reg_type,
3507 ehea_bcmc_regs.arr[i].macaddr,
3508 0, H_DEREG_BCMC);
3509}
3510
48cfb14f
HH		 3511static int ehea_mem_notifier(struct notifier_block *nb,
3512 unsigned long action, void *data)
3513{
d4f12daf 3514 struct memory_notify *arg = data;
48cfb14f 3515 switch (action) {
d4f12daf
HH		 3516 case MEM_CANCEL_OFFLINE:
3517 ehea_info("memory offlining canceled");
3518 /* Readd canceled memory block */
3519 case MEM_ONLINE:
3520 ehea_info("memory is going online");
3876732c 3521 set_bit(__EHEA_STOP_XFER, &ehea_driver_flags);
d4f12daf
HH		 3522 if (ehea_add_sect_bmap(arg->start_pfn, arg->nr_pages))
3523 return NOTIFY_BAD;
3524 ehea_rereg_mrs(NULL);
3525 break;
3526 case MEM_GOING_OFFLINE:
3527 ehea_info("memory is going offline");
3876732c 3528 set_bit(__EHEA_STOP_XFER, &ehea_driver_flags);
d4f12daf
HH		 3529 if (ehea_rem_sect_bmap(arg->start_pfn, arg->nr_pages))
3530 return NOTIFY_BAD;
48cfb14f
HH		 3531 ehea_rereg_mrs(NULL);
3532 break;
3533 default:
3534 break;
3535 }
52e21b1b
JBT		 3536
3537 ehea_update_firmware_handles();
3538
48cfb14f
HH		 3539 return NOTIFY_OK;
3540}
3541
3542static struct notifier_block ehea_mem_nb = {
3543 .notifier_call = ehea_mem_notifier,
3544};
3545
2a6f4e49
JBT		 3546static int ehea_reboot_notifier(struct notifier_block *nb,
3547 unsigned long action, void *unused)
3548{
3549 if (action == SYS_RESTART) {
3550 ehea_info("Reboot: freeing all eHEA resources");
3551 ibmebus_unregister_driver(&ehea_driver);
3552 }
3553 return NOTIFY_DONE;
3554}
3555
3556static struct notifier_block ehea_reboot_nb = {
508d2b5d 3557 .notifier_call = ehea_reboot_notifier,
2a6f4e49
JBT		 3558};
3559
7a291083
JBT		 3560static int check_module_parm(void)
3561{
3562 int ret = 0;
3563
3564 if ((rq1_entries < EHEA_MIN_ENTRIES_QP) ||
3565 (rq1_entries > EHEA_MAX_ENTRIES_RQ1)) {
3566 ehea_info("Bad parameter: rq1_entries");
3567 ret = -EINVAL;
3568 }
3569 if ((rq2_entries < EHEA_MIN_ENTRIES_QP) ||
3570 (rq2_entries > EHEA_MAX_ENTRIES_RQ2)) {
3571 ehea_info("Bad parameter: rq2_entries");
3572 ret = -EINVAL;
3573 }
3574 if ((rq3_entries < EHEA_MIN_ENTRIES_QP) ||
3575 (rq3_entries > EHEA_MAX_ENTRIES_RQ3)) {
3576 ehea_info("Bad parameter: rq3_entries");
3577 ret = -EINVAL;
3578 }
3579 if ((sq_entries < EHEA_MIN_ENTRIES_QP) ||
3580 (sq_entries > EHEA_MAX_ENTRIES_SQ)) {
3581 ehea_info("Bad parameter: sq_entries");
3582 ret = -EINVAL;
3583 }
3584
3585 return ret;
3586}
3587
4c3ca4da
JBT		 3588static ssize_t ehea_show_capabilities(struct device_driver *drv,
3589 char *buf)
3590{
3591 return sprintf(buf, "%d", EHEA_CAPABILITIES);
3592}
3593
3594static DRIVER_ATTR(capabilities, S_IRUSR | S_IRGRP | S_IROTH,
3595 ehea_show_capabilities, NULL);
3596
7a291083
JBT		 3597int __init ehea_module_init(void)
3598{
3599 int ret;
3600
3601 printk(KERN_INFO "IBM eHEA ethernet device driver (Release %s)\n",
3602 DRV_VERSION);
3603
44c82152
TK		 3604
3605 INIT_WORK(&ehea_rereg_mr_task, ehea_rereg_mrs);
21eee2dd
TK		 3606 memset(&ehea_fw_handles, 0, sizeof(ehea_fw_handles));
3607 memset(&ehea_bcmc_regs, 0, sizeof(ehea_bcmc_regs));
3608
9f71a568 3609 mutex_init(&ehea_fw_handles.lock);
5c2cec14 3610 spin_lock_init(&ehea_bcmc_regs.lock);
44c82152 3611
7a291083
JBT		 3612 ret = check_module_parm();
3613 if (ret)
3614 goto out;
44c82152
TK		 3615
3616 ret = ehea_create_busmap();
3617 if (ret)
3618 goto out;
3619
21eee2dd
TK		 3620 ret = register_reboot_notifier(&ehea_reboot_nb);
3621 if (ret)
3622 ehea_info("failed registering reboot notifier");
3623
48cfb14f
HH		 3624 ret = register_memory_notifier(&ehea_mem_nb);
3625 if (ret)
3626 ehea_info("failed registering memory remove notifier");
3627
21eee2dd
TK		 3628 ret = crash_shutdown_register(&ehea_crash_handler);
3629 if (ret)
3630 ehea_info("failed registering crash handler");
2a6f4e49 3631
7a291083 3632 ret = ibmebus_register_driver(&ehea_driver);
4c3ca4da 3633 if (ret) {
7a291083 3634 ehea_error("failed registering eHEA device driver on ebus");
21eee2dd 3635 goto out2;
4c3ca4da
JBT		 3636 }
3637
3638 ret = driver_create_file(&ehea_driver.driver,
3639 &driver_attr_capabilities);
3640 if (ret) {
3641 ehea_error("failed to register capabilities attribute, ret=%d",
3642 ret);
21eee2dd 3643 goto out3;
4c3ca4da 3644 }
7a291083 3645
21eee2dd
TK		 3646 return ret;
3647
3648out3:
3649 ibmebus_unregister_driver(&ehea_driver);
3650out2:
48cfb14f 3651 unregister_memory_notifier(&ehea_mem_nb);
21eee2dd
TK		 3652 unregister_reboot_notifier(&ehea_reboot_nb);
3653 crash_shutdown_unregister(&ehea_crash_handler);
7a291083
JBT		 3654out:
3655 return ret;
3656}
3657
3658static void __exit ehea_module_exit(void)
3659{
21eee2dd
TK		 3660 int ret;
3661
3bf76b81 3662 flush_scheduled_work();
4c3ca4da 3663 driver_remove_file(&ehea_driver.driver, &driver_attr_capabilities);
7a291083 3664 ibmebus_unregister_driver(&ehea_driver);
2a6f4e49 3665 unregister_reboot_notifier(&ehea_reboot_nb);
21eee2dd
TK		 3666 ret = crash_shutdown_unregister(&ehea_crash_handler);
3667 if (ret)
3668 ehea_info("failed unregistering crash handler");
48cfb14f 3669 unregister_memory_notifier(&ehea_mem_nb);
21eee2dd
TK		 3670 kfree(ehea_fw_handles.arr);
3671 kfree(ehea_bcmc_regs.arr);
44c82152 3672 ehea_destroy_busmap();
7a291083
JBT		 3673}
3674
3675module_init(ehea_module_init);
3676module_exit(ehea_module_exit);
Linux 6.x block layer and io_uring tree(s)