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i825xx: Call dev_kfree_skb_any instead of dev_kfree_skb.
[linux-2.6-block.git] / drivers / net / ethernet / ibm / ehea / ehea_main.c
CommitLineData
7a291083 1/*
3396c782 2 * linux/drivers/net/ethernet/ibm/ehea/ehea_main.c
7a291083
JBT		 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
8c4877a4
JP		 29#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
30
7a291083
JBT		 31#include <linux/in.h>
32#include <linux/ip.h>
33#include <linux/tcp.h>
34#include <linux/udp.h>
35#include <linux/if.h>
36#include <linux/list.h>
5a0e3ad6 37#include <linux/slab.h>
7a291083 38#include <linux/if_ether.h>
2a6f4e49
JBT		 39#include <linux/notifier.h>
40#include <linux/reboot.h>
48cfb14f 41#include <linux/memory.h>
21eee2dd 42#include <asm/kexec.h>
06f89edf 43#include <linux/mutex.h>
268bb0ce 44#include <linux/prefetch.h>
2a6f4e49 45
7a291083
JBT		 46#include <net/ip.h>
47
48#include "ehea.h"
49#include "ehea_qmr.h"
50#include "ehea_phyp.h"
51
52
53MODULE_LICENSE("GPL");
54MODULE_AUTHOR("Christoph Raisch <raisch@de.ibm.com>");
55MODULE_DESCRIPTION("IBM eServer HEA Driver");
56MODULE_VERSION(DRV_VERSION);
57
58
59static int msg_level = -1;
60static int rq1_entries = EHEA_DEF_ENTRIES_RQ1;
61static int rq2_entries = EHEA_DEF_ENTRIES_RQ2;
62static int rq3_entries = EHEA_DEF_ENTRIES_RQ3;
63static int sq_entries = EHEA_DEF_ENTRIES_SQ;
b9564468 64static int use_mcs = 1;
508d2b5d 65static int prop_carrier_state;
7a291083
JBT		 66
67module_param(msg_level, int, 0);
68module_param(rq1_entries, int, 0);
69module_param(rq2_entries, int, 0);
70module_param(rq3_entries, int, 0);
71module_param(sq_entries, int, 0);
8759cf76 72module_param(prop_carrier_state, int, 0);
18604c54 73module_param(use_mcs, int, 0);
7a291083
JBT		 74
75MODULE_PARM_DESC(msg_level, "msg_level");
8759cf76
JBT		 76MODULE_PARM_DESC(prop_carrier_state, "Propagate carrier state of physical "
77 "port to stack. 1:yes, 0:no. Default = 0 ");
7a291083 78MODULE_PARM_DESC(rq3_entries, "Number of entries for Receive Queue 3 "
31d17536 79 "[2^x - 1], x = [7..14]. Default = "
7a291083
JBT		 80 __MODULE_STRING(EHEA_DEF_ENTRIES_RQ3) ")");
81MODULE_PARM_DESC(rq2_entries, "Number of entries for Receive Queue 2 "
31d17536 82 "[2^x - 1], x = [7..14]. Default = "
7a291083
JBT		 83 __MODULE_STRING(EHEA_DEF_ENTRIES_RQ2) ")");
84MODULE_PARM_DESC(rq1_entries, "Number of entries for Receive Queue 1 "
31d17536 85 "[2^x - 1], x = [7..14]. Default = "
7a291083
JBT		 86 __MODULE_STRING(EHEA_DEF_ENTRIES_RQ1) ")");
87MODULE_PARM_DESC(sq_entries, " Number of entries for the Send Queue "
31d17536 88 "[2^x - 1], x = [7..14]. Default = "
7a291083 89 __MODULE_STRING(EHEA_DEF_ENTRIES_SQ) ")");
b9564468
AB		 90MODULE_PARM_DESC(use_mcs, " Multiple receive queues, 1: enable, 0: disable, "
91 "Default = 1");
7a291083 92
508d2b5d 93static int port_name_cnt;
44c82152 94static LIST_HEAD(adapter_list);
48e4cc77 95static unsigned long ehea_driver_flags;
06f89edf 96static DEFINE_MUTEX(dlpar_mem_lock);
1886e5d2
TLSC		 97static struct ehea_fw_handle_array ehea_fw_handles;
98static struct ehea_bcmc_reg_array ehea_bcmc_regs;
21eee2dd 99
d1dea38d 100
c45640e4 101static int ehea_probe_adapter(struct platform_device *dev);
d1dea38d 102
0297be07 103static int ehea_remove(struct platform_device *dev);
d1dea38d 104
7a3a6212
OH		 105static struct of_device_id ehea_module_device_table[] = {
106 {
107 .name = "lhea",
108 .compatible = "IBM,lhea",
109 },
110 {
111 .type = "network",
112 .compatible = "IBM,lhea-ethernet",
113 },
114 {},
115};
116MODULE_DEVICE_TABLE(of, ehea_module_device_table);
117
d1dea38d
TK		 118static struct of_device_id ehea_device_table[] = {
119 {
120 .name = "lhea",
121 .compatible = "IBM,lhea",
122 },
123 {},
124};
125
c45640e4 126static struct platform_driver ehea_driver = {
4018294b
GL		 127 .driver = {
128 .name = "ehea",
129 .owner = THIS_MODULE,
130 .of_match_table = ehea_device_table,
131 },
d1dea38d
TK		 132 .probe = ehea_probe_adapter,
133 .remove = ehea_remove,
134};
135
508d2b5d
DM		 136void ehea_dump(void *adr, int len, char *msg)
137{
7a291083
JBT		 138 int x;
139 unsigned char *deb = adr;
140 for (x = 0; x < len; x += 16) {
8c4877a4
JP		 141 pr_info("%s adr=%p ofs=%04x %016llx %016llx\n",
142 msg, deb, x, *((u64 *)&deb[0]), *((u64 *)&deb[8]));
7a291083
JBT		 143 deb += 16;
144 }
145}
146
1886e5d2 147static void ehea_schedule_port_reset(struct ehea_port *port)
2f69ae01
JBT		 148{
149 if (!test_bit(__EHEA_DISABLE_PORT_RESET, &port->flags))
150 schedule_work(&port->reset_task);
151}
152
21eee2dd
TK		 153static void ehea_update_firmware_handles(void)
154{
155 struct ehea_fw_handle_entry *arr = NULL;
156 struct ehea_adapter *adapter;
157 int num_adapters = 0;
158 int num_ports = 0;
159 int num_portres = 0;
160 int i = 0;
161 int num_fw_handles, k, l;
162
163 /* Determine number of handles */
52e21b1b
JBT		 164 mutex_lock(&ehea_fw_handles.lock);
165
21eee2dd
TK		 166 list_for_each_entry(adapter, &adapter_list, list) {
167 num_adapters++;
168
169 for (k = 0; k < EHEA_MAX_PORTS; k++) {
170 struct ehea_port *port = adapter->port[k];
171
172 if (!port || (port->state != EHEA_PORT_UP))
173 continue;
174
175 num_ports++;
723f28e4 176 num_portres += port->num_def_qps;
21eee2dd
TK		 177 }
178 }
179
180 num_fw_handles = num_adapters * EHEA_NUM_ADAPTER_FW_HANDLES +
181 num_ports * EHEA_NUM_PORT_FW_HANDLES +
182 num_portres * EHEA_NUM_PORTRES_FW_HANDLES;
183
184 if (num_fw_handles) {
baeb2ffa 185 arr = kcalloc(num_fw_handles, sizeof(*arr), GFP_KERNEL);
21eee2dd 186 if (!arr)
52e21b1b 187 goto out; /* Keep the existing array */
21eee2dd
TK		 188 } else
189 goto out_update;
190
191 list_for_each_entry(adapter, &adapter_list, list) {
52e21b1b
JBT		 192 if (num_adapters == 0)
193 break;
194
21eee2dd
TK		 195 for (k = 0; k < EHEA_MAX_PORTS; k++) {
196 struct ehea_port *port = adapter->port[k];
197
8e95a202
JP		 198 if (!port || (port->state != EHEA_PORT_UP) ||
199 (num_ports == 0))
21eee2dd
TK		 200 continue;
201
723f28e4 202 for (l = 0; l < port->num_def_qps; l++) {
21eee2dd
TK		 203 struct ehea_port_res *pr = &port->port_res[l];
204
205 arr[i].adh = adapter->handle;
206 arr[i++].fwh = pr->qp->fw_handle;
207 arr[i].adh = adapter->handle;
208 arr[i++].fwh = pr->send_cq->fw_handle;
209 arr[i].adh = adapter->handle;
210 arr[i++].fwh = pr->recv_cq->fw_handle;
211 arr[i].adh = adapter->handle;
212 arr[i++].fwh = pr->eq->fw_handle;
213 arr[i].adh = adapter->handle;
214 arr[i++].fwh = pr->send_mr.handle;
215 arr[i].adh = adapter->handle;
216 arr[i++].fwh = pr->recv_mr.handle;
217 }
218 arr[i].adh = adapter->handle;
219 arr[i++].fwh = port->qp_eq->fw_handle;
52e21b1b 220 num_ports--;
21eee2dd
TK		 221 }
222
223 arr[i].adh = adapter->handle;
224 arr[i++].fwh = adapter->neq->fw_handle;
225
226 if (adapter->mr.handle) {
227 arr[i].adh = adapter->handle;
228 arr[i++].fwh = adapter->mr.handle;
229 }
52e21b1b 230 num_adapters--;
21eee2dd
TK		 231 }
232
233out_update:
234 kfree(ehea_fw_handles.arr);
235 ehea_fw_handles.arr = arr;
236 ehea_fw_handles.num_entries = i;
52e21b1b
JBT		 237out:
238 mutex_unlock(&ehea_fw_handles.lock);
21eee2dd
TK		 239}
240
241static void ehea_update_bcmc_registrations(void)
242{
52e21b1b 243 unsigned long flags;
21eee2dd
TK		 244 struct ehea_bcmc_reg_entry *arr = NULL;
245 struct ehea_adapter *adapter;
246 struct ehea_mc_list *mc_entry;
247 int num_registrations = 0;
248 int i = 0;
249 int k;
250
52e21b1b
JBT		 251 spin_lock_irqsave(&ehea_bcmc_regs.lock, flags);
252
21eee2dd
TK		 253 /* Determine number of registrations */
254 list_for_each_entry(adapter, &adapter_list, list)
255 for (k = 0; k < EHEA_MAX_PORTS; k++) {
256 struct ehea_port *port = adapter->port[k];
257
258 if (!port || (port->state != EHEA_PORT_UP))
259 continue;
260
261 num_registrations += 2; /* Broadcast registrations */
262
263 list_for_each_entry(mc_entry, &port->mc_list->list,list)
264 num_registrations += 2;
265 }
266
267 if (num_registrations) {
baeb2ffa 268 arr = kcalloc(num_registrations, sizeof(*arr), GFP_ATOMIC);
21eee2dd 269 if (!arr)
52e21b1b 270 goto out; /* Keep the existing array */
21eee2dd
TK		 271 } else
272 goto out_update;
273
274 list_for_each_entry(adapter, &adapter_list, list) {
275 for (k = 0; k < EHEA_MAX_PORTS; k++) {
276 struct ehea_port *port = adapter->port[k];
277
278 if (!port || (port->state != EHEA_PORT_UP))
279 continue;
280
52e21b1b
JBT		 281 if (num_registrations == 0)
282 goto out_update;
283
21eee2dd
TK		 284 arr[i].adh = adapter->handle;
285 arr[i].port_id = port->logical_port_id;
286 arr[i].reg_type = EHEA_BCMC_BROADCAST |
287 EHEA_BCMC_UNTAGGED;
288 arr[i++].macaddr = port->mac_addr;
289
290 arr[i].adh = adapter->handle;
291 arr[i].port_id = port->logical_port_id;
292 arr[i].reg_type = EHEA_BCMC_BROADCAST |
293 EHEA_BCMC_VLANID_ALL;
294 arr[i++].macaddr = port->mac_addr;
52e21b1b 295 num_registrations -= 2;
21eee2dd
TK		 296
297 list_for_each_entry(mc_entry,
298 &port->mc_list->list, list) {
52e21b1b
JBT		 299 if (num_registrations == 0)
300 goto out_update;
301
21eee2dd
TK		 302 arr[i].adh = adapter->handle;
303 arr[i].port_id = port->logical_port_id;
5d384574 304 arr[i].reg_type = EHEA_BCMC_MULTICAST |
21eee2dd 305 EHEA_BCMC_UNTAGGED;
5d384574
TLSC		 306 if (mc_entry->macaddr == 0)
307 arr[i].reg_type |= EHEA_BCMC_SCOPE_ALL;
21eee2dd
TK		 308 arr[i++].macaddr = mc_entry->macaddr;
309
310 arr[i].adh = adapter->handle;
311 arr[i].port_id = port->logical_port_id;
5d384574 312 arr[i].reg_type = EHEA_BCMC_MULTICAST |
21eee2dd 313 EHEA_BCMC_VLANID_ALL;
5d384574
TLSC		 314 if (mc_entry->macaddr == 0)
315 arr[i].reg_type |= EHEA_BCMC_SCOPE_ALL;
21eee2dd 316 arr[i++].macaddr = mc_entry->macaddr;
52e21b1b 317 num_registrations -= 2;
21eee2dd
TK		 318 }
319 }
320 }
321
322out_update:
323 kfree(ehea_bcmc_regs.arr);
324 ehea_bcmc_regs.arr = arr;
325 ehea_bcmc_regs.num_entries = i;
52e21b1b
JBT		 326out:
327 spin_unlock_irqrestore(&ehea_bcmc_regs.lock, flags);
21eee2dd
TK		 328}
329
239c562c
AB		 330static struct rtnl_link_stats64 *ehea_get_stats64(struct net_device *dev,
331 struct rtnl_link_stats64 *stats)
7a291083
JBT		 332{
333 struct ehea_port *port = netdev_priv(dev);
2aefcad8 334 u64 rx_packets = 0, tx_packets = 0, rx_bytes = 0, tx_bytes = 0;
7a291083
JBT		 335 int i;
336
2aefcad8 337 for (i = 0; i < port->num_def_qps; i++) {
338 rx_packets += port->port_res[i].rx_packets;
339 rx_bytes += port->port_res[i].rx_bytes;
340 }
341
723f28e4 342 for (i = 0; i < port->num_def_qps; i++) {
2aefcad8 343 tx_packets += port->port_res[i].tx_packets;
344 tx_bytes += port->port_res[i].tx_bytes;
345 }
346
347 stats->tx_packets = tx_packets;
348 stats->rx_bytes = rx_bytes;
349 stats->tx_bytes = tx_bytes;
350 stats->rx_packets = rx_packets;
351
09c1d446
ED		 352 stats->multicast = port->stats.multicast;
353 stats->rx_errors = port->stats.rx_errors;
354 return stats;
2aefcad8 355}
356
357static void ehea_update_stats(struct work_struct *work)
358{
359 struct ehea_port *port =
360 container_of(work, struct ehea_port, stats_work.work);
361 struct net_device *dev = port->netdev;
239c562c 362 struct rtnl_link_stats64 *stats = &port->stats;
2aefcad8 363 struct hcp_ehea_port_cb2 *cb2;
364 u64 hret;
7a291083 365
3d8009c7 366 cb2 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083 367 if (!cb2) {
2aefcad8 368 netdev_err(dev, "No mem for cb2. Some interface statistics were not updated\n");
369 goto resched;
7a291083
JBT		 370 }
371
372 hret = ehea_h_query_ehea_port(port->adapter->handle,
373 port->logical_port_id,
374 H_PORT_CB2, H_PORT_CB2_ALL, cb2);
375 if (hret != H_SUCCESS) {
8c4877a4 376 netdev_err(dev, "query_ehea_port failed\n");
7a291083
JBT		 377 goto out_herr;
378 }
379
380 if (netif_msg_hw(port))
381 ehea_dump(cb2, sizeof(*cb2), "net_device_stats");
382
7a291083
JBT		 383 stats->multicast = cb2->rxmcp;
384 stats->rx_errors = cb2->rxuerr;
7a291083
JBT		 385
386out_herr:
3faf2693 387 free_page((unsigned long)cb2);
2aefcad8 388resched:
67c170a2
AB		 389 schedule_delayed_work(&port->stats_work,
390 round_jiffies_relative(msecs_to_jiffies(1000)));
7a291083
JBT		 391}
392
393static void ehea_refill_rq1(struct ehea_port_res *pr, int index, int nr_of_wqes)
394{
395 struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
396 struct net_device *dev = pr->port->netdev;
397 int max_index_mask = pr->rq1_skba.len - 1;
2c69448b
JBT		 398 int fill_wqes = pr->rq1_skba.os_skbs + nr_of_wqes;
399 int adder = 0;
7a291083
JBT		 400 int i;
401
2c69448b
JBT		 402 pr->rq1_skba.os_skbs = 0;
403
404 if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) {
44fb3126
TK		 405 if (nr_of_wqes > 0)
406 pr->rq1_skba.index = index;
2c69448b 407 pr->rq1_skba.os_skbs = fill_wqes;
7a291083 408 return;
2c69448b 409 }
7a291083 410
2c69448b 411 for (i = 0; i < fill_wqes; i++) {
7a291083
JBT		 412 if (!skb_arr_rq1[index]) {
413 skb_arr_rq1[index] = netdev_alloc_skb(dev,
414 EHEA_L_PKT_SIZE);
415 if (!skb_arr_rq1[index]) {
2c69448b 416 pr->rq1_skba.os_skbs = fill_wqes - i;
7a291083
JBT		 417 break;
418 }
419 }
420 index--;
421 index &= max_index_mask;
2c69448b 422 adder++;
7a291083 423 }
2c69448b
JBT		 424
425 if (adder == 0)
426 return;
427
7a291083 428 /* Ring doorbell */
2c69448b 429 ehea_update_rq1a(pr->qp, adder);
7a291083
JBT		 430}
431
e2878806 432static void ehea_init_fill_rq1(struct ehea_port_res *pr, int nr_rq1a)
7a291083 433{
7a291083
JBT		 434 struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
435 struct net_device *dev = pr->port->netdev;
436 int i;
437
5c7e57f7 438 if (nr_rq1a > pr->rq1_skba.len) {
8c4877a4 439 netdev_err(dev, "NR_RQ1A bigger than skb array len\n");
5c7e57f7
BL		 440 return;
441 }
442
443 for (i = 0; i < nr_rq1a; i++) {
7a291083 444 skb_arr_rq1[i] = netdev_alloc_skb(dev, EHEA_L_PKT_SIZE);
720a43ef 445 if (!skb_arr_rq1[i])
e2878806 446 break;
7a291083
JBT		 447 }
448 /* Ring doorbell */
f76957fc 449 ehea_update_rq1a(pr->qp, i - 1);
7a291083
JBT		 450}
451
452static int ehea_refill_rq_def(struct ehea_port_res *pr,
453 struct ehea_q_skb_arr *q_skba, int rq_nr,
454 int num_wqes, int wqe_type, int packet_size)
455{
456 struct net_device *dev = pr->port->netdev;
457 struct ehea_qp *qp = pr->qp;
458 struct sk_buff **skb_arr = q_skba->arr;
459 struct ehea_rwqe *rwqe;
460 int i, index, max_index_mask, fill_wqes;
2c69448b 461 int adder = 0;
7a291083
JBT		 462 int ret = 0;
463
464 fill_wqes = q_skba->os_skbs + num_wqes;
2c69448b 465 q_skba->os_skbs = 0;
7a291083 466
2c69448b
JBT		 467 if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) {
468 q_skba->os_skbs = fill_wqes;
7a291083 469 return ret;
2c69448b 470 }
7a291083
JBT		 471
472 index = q_skba->index;
473 max_index_mask = q_skba->len - 1;
474 for (i = 0; i < fill_wqes; i++) {
2c69448b 475 u64 tmp_addr;
89d71a66
ED		 476 struct sk_buff *skb;
477
478 skb = netdev_alloc_skb_ip_align(dev, packet_size);
7a291083 479 if (!skb) {
7a291083 480 q_skba->os_skbs = fill_wqes - i;
e2878806 481 if (q_skba->os_skbs == q_skba->len - 2) {
8c4877a4
JP		 482 netdev_info(pr->port->netdev,
483 "rq%i ran dry - no mem for skb\n",
484 rq_nr);
e2878806
TK		 485 ret = -ENOMEM;
486 }
7a291083
JBT		 487 break;
488 }
7a291083
JBT		 489
490 skb_arr[index] = skb;
2c69448b
JBT		 491 tmp_addr = ehea_map_vaddr(skb->data);
492 if (tmp_addr == -1) {
493 dev_kfree_skb(skb);
494 q_skba->os_skbs = fill_wqes - i;
495 ret = 0;
496 break;
497 }
7a291083
JBT		 498
499 rwqe = ehea_get_next_rwqe(qp, rq_nr);
500 rwqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, wqe_type)
d1d25aab 501 | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, index);
7a291083 502 rwqe->sg_list[0].l_key = pr->recv_mr.lkey;
2c69448b 503 rwqe->sg_list[0].vaddr = tmp_addr;
7a291083
JBT		 504 rwqe->sg_list[0].len = packet_size;
505 rwqe->data_segments = 1;
506
507 index++;
508 index &= max_index_mask;
2c69448b 509 adder++;
7a291083 510 }
44c82152 511
7a291083 512 q_skba->index = index;
2c69448b
JBT		 513 if (adder == 0)
514 goto out;
7a291083
JBT		 515
516 /* Ring doorbell */
517 iosync();
518 if (rq_nr == 2)
2c69448b 519 ehea_update_rq2a(pr->qp, adder);
7a291083 520 else
2c69448b 521 ehea_update_rq3a(pr->qp, adder);
44c82152 522out:
7a291083
JBT		 523 return ret;
524}
525
526
527static int ehea_refill_rq2(struct ehea_port_res *pr, int nr_of_wqes)
528{
529 return ehea_refill_rq_def(pr, &pr->rq2_skba, 2,
530 nr_of_wqes, EHEA_RWQE2_TYPE,
89d71a66 531 EHEA_RQ2_PKT_SIZE);
7a291083
JBT		 532}
533
534
535static int ehea_refill_rq3(struct ehea_port_res *pr, int nr_of_wqes)
536{
537 return ehea_refill_rq_def(pr, &pr->rq3_skba, 3,
538 nr_of_wqes, EHEA_RWQE3_TYPE,
89d71a66 539 EHEA_MAX_PACKET_SIZE);
7a291083
JBT		 540}
541
542static inline int ehea_check_cqe(struct ehea_cqe *cqe, int *rq_num)
543{
544 *rq_num = (cqe->type & EHEA_CQE_TYPE_RQ) >> 5;
545 if ((cqe->status & EHEA_CQE_STAT_ERR_MASK) == 0)
546 return 0;
547 if (((cqe->status & EHEA_CQE_STAT_ERR_TCP) != 0) &&
548 (cqe->header_length == 0))
549 return 0;
550 return -EINVAL;
551}
552
553static inline void ehea_fill_skb(struct net_device *dev,
b9564468
AB		 554 struct sk_buff *skb, struct ehea_cqe *cqe,
555 struct ehea_port_res *pr)
7a291083
JBT		 556{
557 int length = cqe->num_bytes_transfered - 4; /*remove CRC */
558
559 skb_put(skb, length);
7a291083 560 skb->protocol = eth_type_trans(skb, dev);
71085ce8
BL		 561
562 /* The packet was not an IPV4 packet so a complemented checksum was
563 calculated. The value is found in the Internet Checksum field. */
564 if (cqe->status & EHEA_CQE_BLIND_CKSUM) {
565 skb->ip_summed = CHECKSUM_COMPLETE;
566 skb->csum = csum_unfold(~cqe->inet_checksum_value);
567 } else
568 skb->ip_summed = CHECKSUM_UNNECESSARY;
b9564468
AB		 569
570 skb_record_rx_queue(skb, pr - &pr->port->port_res[0]);
7a291083
JBT		 571}
572
573static inline struct sk_buff *get_skb_by_index(struct sk_buff **skb_array,
574 int arr_len,
575 struct ehea_cqe *cqe)
576{
577 int skb_index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, cqe->wr_id);
578 struct sk_buff *skb;
579 void *pref;
580 int x;
581
582 x = skb_index + 1;
583 x &= (arr_len - 1);
584
585 pref = skb_array[x];
0b2febf3
HH		 586 if (pref) {
587 prefetchw(pref);
588 prefetchw(pref + EHEA_CACHE_LINE);
589
590 pref = (skb_array[x]->data);
591 prefetch(pref);
592 prefetch(pref + EHEA_CACHE_LINE);
593 prefetch(pref + EHEA_CACHE_LINE * 2);
594 prefetch(pref + EHEA_CACHE_LINE * 3);
595 }
596
7a291083
JBT		 597 skb = skb_array[skb_index];
598 skb_array[skb_index] = NULL;
599 return skb;
600}
601
602static inline struct sk_buff *get_skb_by_index_ll(struct sk_buff **skb_array,
603 int arr_len, int wqe_index)
604{
605 struct sk_buff *skb;
606 void *pref;
607 int x;
608
609 x = wqe_index + 1;
610 x &= (arr_len - 1);
611
612 pref = skb_array[x];
0b2febf3
HH		 613 if (pref) {
614 prefetchw(pref);
615 prefetchw(pref + EHEA_CACHE_LINE);
7a291083 616
0b2febf3
HH		 617 pref = (skb_array[x]->data);
618 prefetchw(pref);
619 prefetchw(pref + EHEA_CACHE_LINE);
620 }
7a291083
JBT		 621
622 skb = skb_array[wqe_index];
623 skb_array[wqe_index] = NULL;
624 return skb;
625}
626
627static int ehea_treat_poll_error(struct ehea_port_res *pr, int rq,
628 struct ehea_cqe *cqe, int *processed_rq2,
629 int *processed_rq3)
630{
631 struct sk_buff *skb;
632
acbddb59
JBT		 633 if (cqe->status & EHEA_CQE_STAT_ERR_TCP)
634 pr->p_stats.err_tcp_cksum++;
635 if (cqe->status & EHEA_CQE_STAT_ERR_IP)
636 pr->p_stats.err_ip_cksum++;
637 if (cqe->status & EHEA_CQE_STAT_ERR_CRC)
638 pr->p_stats.err_frame_crc++;
639
7a291083
JBT		 640 if (rq == 2) {
641 *processed_rq2 += 1;
642 skb = get_skb_by_index(pr->rq2_skba.arr, pr->rq2_skba.len, cqe);
643 dev_kfree_skb(skb);
644 } else if (rq == 3) {
645 *processed_rq3 += 1;
646 skb = get_skb_by_index(pr->rq3_skba.arr, pr->rq3_skba.len, cqe);
647 dev_kfree_skb(skb);
648 }
649
650 if (cqe->status & EHEA_CQE_STAT_FAT_ERR_MASK) {
58dd8258 651 if (netif_msg_rx_err(pr->port)) {
8c4877a4
JP		 652 pr_err("Critical receive error for QP %d. Resetting port.\n",
653 pr->qp->init_attr.qp_nr);
58dd8258
TK		 654 ehea_dump(cqe, sizeof(*cqe), "CQE");
655 }
2f69ae01 656 ehea_schedule_port_reset(pr->port);
7a291083
JBT		 657 return 1;
658 }
659
660 return 0;
661}
662
bea3348e
SH		 663static int ehea_proc_rwqes(struct net_device *dev,
664 struct ehea_port_res *pr,
665 int budget)
7a291083 666{
18604c54 667 struct ehea_port *port = pr->port;
7a291083
JBT		 668 struct ehea_qp *qp = pr->qp;
669 struct ehea_cqe *cqe;
670 struct sk_buff *skb;
671 struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
672 struct sk_buff **skb_arr_rq2 = pr->rq2_skba.arr;
673 struct sk_buff **skb_arr_rq3 = pr->rq3_skba.arr;
674 int skb_arr_rq1_len = pr->rq1_skba.len;
675 int skb_arr_rq2_len = pr->rq2_skba.len;
676 int skb_arr_rq3_len = pr->rq3_skba.len;
677 int processed, processed_rq1, processed_rq2, processed_rq3;
ce45b873 678 u64 processed_bytes = 0;
bea3348e 679 int wqe_index, last_wqe_index, rq, port_reset;
7a291083
JBT		 680
681 processed = processed_rq1 = processed_rq2 = processed_rq3 = 0;
682 last_wqe_index = 0;
7a291083 683
7a291083 684 cqe = ehea_poll_rq1(qp, &wqe_index);
bea3348e 685 while ((processed < budget) && cqe) {
7a291083
JBT		 686 ehea_inc_rq1(qp);
687 processed_rq1++;
688 processed++;
7a291083
JBT		 689 if (netif_msg_rx_status(port))
690 ehea_dump(cqe, sizeof(*cqe), "CQE");
691
692 last_wqe_index = wqe_index;
693 rmb();
694 if (!ehea_check_cqe(cqe, &rq)) {
508d2b5d
DM		 695 if (rq == 1) {
696 /* LL RQ1 */
7a291083
JBT		 697 skb = get_skb_by_index_ll(skb_arr_rq1,
698 skb_arr_rq1_len,
699 wqe_index);
700 if (unlikely(!skb)) {
782615ae 701 netif_info(port, rx_err, dev,
8c4877a4 702 "LL rq1: skb=NULL\n");
18604c54 703
bea3348e 704 skb = netdev_alloc_skb(dev,
7a291083 705 EHEA_L_PKT_SIZE);
720a43ef 706 if (!skb)
7a291083
JBT		 707 break;
708 }
508d2b5d 709 skb_copy_to_linear_data(skb, ((char *)cqe) + 64,
d1d25aab 710 cqe->num_bytes_transfered - 4);
b9564468 711 ehea_fill_skb(dev, skb, cqe, pr);
508d2b5d
DM		 712 } else if (rq == 2) {
713 /* RQ2 */
7a291083
JBT		 714 skb = get_skb_by_index(skb_arr_rq2,
715 skb_arr_rq2_len, cqe);
716 if (unlikely(!skb)) {
8c4877a4
JP		 717 netif_err(port, rx_err, dev,
718 "rq2: skb=NULL\n");
7a291083
JBT		 719 break;
720 }
b9564468 721 ehea_fill_skb(dev, skb, cqe, pr);
7a291083 722 processed_rq2++;
508d2b5d
DM		 723 } else {
724 /* RQ3 */
7a291083
JBT		 725 skb = get_skb_by_index(skb_arr_rq3,
726 skb_arr_rq3_len, cqe);
727 if (unlikely(!skb)) {
8c4877a4
JP		 728 netif_err(port, rx_err, dev,
729 "rq3: skb=NULL\n");
7a291083
JBT		 730 break;
731 }
b9564468 732 ehea_fill_skb(dev, skb, cqe, pr);
7a291083
JBT		 733 processed_rq3++;
734 }
735
ce45b873 736 processed_bytes += skb->len;
3428414f
AB		 737
738 if (cqe->status & EHEA_CQE_VLAN_TAG_XTRACT)
e5905c83
DM		 739 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q),
740 cqe->vlan_tag);
3428414f
AB		 741
742 napi_gro_receive(&pr->napi, skb);
18604c54 743 } else {
acbddb59 744 pr->p_stats.poll_receive_errors++;
7a291083
JBT		 745 port_reset = ehea_treat_poll_error(pr, rq, cqe,
746 &processed_rq2,
747 &processed_rq3);
748 if (port_reset)
749 break;
750 }
751 cqe = ehea_poll_rq1(qp, &wqe_index);
752 }
753
7a291083 754 pr->rx_packets += processed;
ce45b873 755 pr->rx_bytes += processed_bytes;
7a291083
JBT		 756
757 ehea_refill_rq1(pr, last_wqe_index, processed_rq1);
758 ehea_refill_rq2(pr, processed_rq2);
759 ehea_refill_rq3(pr, processed_rq3);
760
bea3348e 761 return processed;
7a291083
JBT		 762}
763
2928db4c
AD		 764#define SWQE_RESTART_CHECK 0xdeadbeaff00d0000ull
765
766static void reset_sq_restart_flag(struct ehea_port *port)
767{
768 int i;
769
723f28e4 770 for (i = 0; i < port->num_def_qps; i++) {
2928db4c
AD		 771 struct ehea_port_res *pr = &port->port_res[i];
772 pr->sq_restart_flag = 0;
773 }
a8bb69f7 774 wake_up(&port->restart_wq);
2928db4c
AD		 775}
776
777static void check_sqs(struct ehea_port *port)
778{
779 struct ehea_swqe *swqe;
780 int swqe_index;
781 int i, k;
782
723f28e4 783 for (i = 0; i < port->num_def_qps; i++) {
2928db4c 784 struct ehea_port_res *pr = &port->port_res[i];
a8bb69f7 785 int ret;
2928db4c
AD		 786 k = 0;
787 swqe = ehea_get_swqe(pr->qp, &swqe_index);
788 memset(swqe, 0, SWQE_HEADER_SIZE);
789 atomic_dec(&pr->swqe_avail);
790
791 swqe->tx_control |= EHEA_SWQE_PURGE;
792 swqe->wr_id = SWQE_RESTART_CHECK;
793 swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
794 swqe->tx_control |= EHEA_SWQE_IMM_DATA_PRESENT;
795 swqe->immediate_data_length = 80;
796
797 ehea_post_swqe(pr->qp, swqe);
798
a8bb69f7
BL		 799 ret = wait_event_timeout(port->restart_wq,
800 pr->sq_restart_flag == 0,
801 msecs_to_jiffies(100));
802
803 if (!ret) {
8c4877a4 804 pr_err("HW/SW queues out of sync\n");
a8bb69f7
BL		 805 ehea_schedule_port_reset(pr->port);
806 return;
2928db4c
AD		 807 }
808 }
2928db4c
AD		 809}
810
811
18604c54 812static struct ehea_cqe *ehea_proc_cqes(struct ehea_port_res *pr, int my_quota)
7a291083 813{
acbddb59 814 struct sk_buff *skb;
7a291083
JBT		 815 struct ehea_cq *send_cq = pr->send_cq;
816 struct ehea_cqe *cqe;
18604c54 817 int quota = my_quota;
7a291083
JBT		 818 int cqe_counter = 0;
819 int swqe_av = 0;
acbddb59 820 int index;
b9564468
AB		 821 struct netdev_queue *txq = netdev_get_tx_queue(pr->port->netdev,
822 pr - &pr->port->port_res[0]);
7a291083 823
18604c54 824 cqe = ehea_poll_cq(send_cq);
508d2b5d 825 while (cqe && (quota > 0)) {
18604c54
JBT		 826 ehea_inc_cq(send_cq);
827
7a291083
JBT		 828 cqe_counter++;
829 rmb();
2928db4c
AD		 830
831 if (cqe->wr_id == SWQE_RESTART_CHECK) {
832 pr->sq_restart_flag = 1;
833 swqe_av++;
834 break;
835 }
836
7a291083 837 if (cqe->status & EHEA_CQE_STAT_ERR_MASK) {
8c4877a4
JP		 838 pr_err("Bad send completion status=0x%04X\n",
839 cqe->status);
ea96ceac 840
7a291083
JBT		 841 if (netif_msg_tx_err(pr->port))
842 ehea_dump(cqe, sizeof(*cqe), "Send CQE");
ea96ceac
TK		 843
844 if (cqe->status & EHEA_CQE_STAT_RESET_MASK) {
8c4877a4 845 pr_err("Resetting port\n");
ea96ceac
TK		 846 ehea_schedule_port_reset(pr->port);
847 break;
848 }
7a291083
JBT		 849 }
850
851 if (netif_msg_tx_done(pr->port))
852 ehea_dump(cqe, sizeof(*cqe), "CQE");
853
854 if (likely(EHEA_BMASK_GET(EHEA_WR_ID_TYPE, cqe->wr_id)
acbddb59
JBT		 855 == EHEA_SWQE2_TYPE)) {
856
857 index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, cqe->wr_id);
858 skb = pr->sq_skba.arr[index];
859 dev_kfree_skb(skb);
860 pr->sq_skba.arr[index] = NULL;
861 }
7a291083
JBT		 862
863 swqe_av += EHEA_BMASK_GET(EHEA_WR_ID_REFILL, cqe->wr_id);
864 quota--;
18604c54
JBT		 865
866 cqe = ehea_poll_cq(send_cq);
ee289b64 867 }
7a291083
JBT		 868
869 ehea_update_feca(send_cq, cqe_counter);
870 atomic_add(swqe_av, &pr->swqe_avail);
871
b9564468
AB		 872 if (unlikely(netif_tx_queue_stopped(txq) &&
873 (atomic_read(&pr->swqe_avail) >= pr->swqe_refill_th))) {
874 __netif_tx_lock(txq, smp_processor_id());
875 if (netif_tx_queue_stopped(txq) &&
876 (atomic_read(&pr->swqe_avail) >= pr->swqe_refill_th))
877 netif_tx_wake_queue(txq);
878 __netif_tx_unlock(txq);
7a291083 879 }
b9564468 880
5b27d427 881 wake_up(&pr->port->swqe_avail_wq);
7a291083 882
18604c54 883 return cqe;
7a291083
JBT		 884}
885
bea3348e 886#define EHEA_POLL_MAX_CQES 65535
18604c54 887
bea3348e 888static int ehea_poll(struct napi_struct *napi, int budget)
7a291083 889{
508d2b5d
DM		 890 struct ehea_port_res *pr = container_of(napi, struct ehea_port_res,
891 napi);
bea3348e 892 struct net_device *dev = pr->port->netdev;
18604c54
JBT		 893 struct ehea_cqe *cqe;
894 struct ehea_cqe *cqe_skb = NULL;
222ca96b 895 int wqe_index;
bea3348e 896 int rx = 0;
18604c54 897
bea3348e 898 cqe_skb = ehea_proc_cqes(pr, EHEA_POLL_MAX_CQES);
222ca96b 899 rx += ehea_proc_rwqes(dev, pr, budget - rx);
bea3348e 900
222ca96b 901 while (rx != budget) {
288379f0 902 napi_complete(napi);
18604c54
JBT		 903 ehea_reset_cq_ep(pr->recv_cq);
904 ehea_reset_cq_ep(pr->send_cq);
905 ehea_reset_cq_n1(pr->recv_cq);
906 ehea_reset_cq_n1(pr->send_cq);
a91fb143 907 rmb();
18604c54
JBT		 908 cqe = ehea_poll_rq1(pr->qp, &wqe_index);
909 cqe_skb = ehea_poll_cq(pr->send_cq);
910
e542aa6b 911 if (!cqe && !cqe_skb)
bea3348e 912 return rx;
18604c54 913
288379f0 914 if (!napi_reschedule(napi))
bea3348e 915 return rx;
18604c54 916
bea3348e
SH		 917 cqe_skb = ehea_proc_cqes(pr, EHEA_POLL_MAX_CQES);
918 rx += ehea_proc_rwqes(dev, pr, budget - rx);
919 }
e542aa6b 920
bea3348e 921 return rx;
7a291083
JBT		 922}
923
8d22c971
JBT		 924#ifdef CONFIG_NET_POLL_CONTROLLER
925static void ehea_netpoll(struct net_device *dev)
926{
927 struct ehea_port *port = netdev_priv(dev);
bea3348e 928 int i;
8d22c971 929
bea3348e 930 for (i = 0; i < port->num_def_qps; i++)
288379f0 931 napi_schedule(&port->port_res[i].napi);
8d22c971
JBT		 932}
933#endif
934
7d12e780 935static irqreturn_t ehea_recv_irq_handler(int irq, void *param)
7a291083
JBT		 936{
937 struct ehea_port_res *pr = param;
18604c54 938
288379f0 939 napi_schedule(&pr->napi);
18604c54 940
7a291083
JBT		 941 return IRQ_HANDLED;
942}
943
7d12e780 944static irqreturn_t ehea_qp_aff_irq_handler(int irq, void *param)
7a291083
JBT		 945{
946 struct ehea_port *port = param;
947 struct ehea_eqe *eqe;
d2db9eea 948 struct ehea_qp *qp;
7a291083 949 u32 qp_token;
ea96ceac
TK		 950 u64 resource_type, aer, aerr;
951 int reset_port = 0;
7a291083
JBT		 952
953 eqe = ehea_poll_eq(port->qp_eq);
bb3a6449 954
7a291083 955 while (eqe) {
7a291083 956 qp_token = EHEA_BMASK_GET(EHEA_EQE_QP_TOKEN, eqe->entry);
8c4877a4
JP		 957 pr_err("QP aff_err: entry=0x%llx, token=0x%x\n",
958 eqe->entry, qp_token);
d2db9eea
JBT		 959
960 qp = port->port_res[qp_token].qp;
ea96ceac
TK		 961
962 resource_type = ehea_error_data(port->adapter, qp->fw_handle,
963 &aer, &aerr);
964
965 if (resource_type == EHEA_AER_RESTYPE_QP) {
966 if ((aer & EHEA_AER_RESET_MASK) ||
967 (aerr & EHEA_AERR_RESET_MASK))
968 reset_port = 1;
969 } else
970 reset_port = 1; /* Reset in case of CQ or EQ error */
971
bb3a6449 972 eqe = ehea_poll_eq(port->qp_eq);
7a291083
JBT		 973 }
974
ea96ceac 975 if (reset_port) {
8c4877a4 976 pr_err("Resetting port\n");
ea96ceac
TK		 977 ehea_schedule_port_reset(port);
978 }
d2db9eea 979
7a291083
JBT		 980 return IRQ_HANDLED;
981}
982
983static struct ehea_port *ehea_get_port(struct ehea_adapter *adapter,
984 int logical_port)
985{
986 int i;
987
1acf2318 988 for (i = 0; i < EHEA_MAX_PORTS; i++)
41b69c70 989 if (adapter->port[i])
d1d25aab 990 if (adapter->port[i]->logical_port_id == logical_port)
41b69c70 991 return adapter->port[i];
7a291083
JBT		 992 return NULL;
993}
994
995int ehea_sense_port_attr(struct ehea_port *port)
996{
997 int ret;
998 u64 hret;
999 struct hcp_ehea_port_cb0 *cb0;
1000
508d2b5d 1001 /* may be called via ehea_neq_tasklet() */
3faf2693 1002 cb0 = (void *)get_zeroed_page(GFP_ATOMIC);
508d2b5d 1003 if (!cb0) {
8c4877a4 1004 pr_err("no mem for cb0\n");
7a291083
JBT		 1005 ret = -ENOMEM;
1006 goto out;
1007 }
1008
1009 hret = ehea_h_query_ehea_port(port->adapter->handle,
1010 port->logical_port_id, H_PORT_CB0,
1011 EHEA_BMASK_SET(H_PORT_CB0_ALL, 0xFFFF),
1012 cb0);
1013 if (hret != H_SUCCESS) {
1014 ret = -EIO;
1015 goto out_free;
1016 }
1017
1018 /* MAC address */
1019 port->mac_addr = cb0->port_mac_addr << 16;
1020
508d2b5d 1021 if (!is_valid_ether_addr((u8 *)&port->mac_addr)) {
7a291083
JBT		 1022 ret = -EADDRNOTAVAIL;
1023 goto out_free;
1024 }
1025
1026 /* Port speed */
1027 switch (cb0->port_speed) {
1028 case H_SPEED_10M_H:
1029 port->port_speed = EHEA_SPEED_10M;
1030 port->full_duplex = 0;
1031 break;
1032 case H_SPEED_10M_F:
1033 port->port_speed = EHEA_SPEED_10M;
1034 port->full_duplex = 1;
1035 break;
1036 case H_SPEED_100M_H:
1037 port->port_speed = EHEA_SPEED_100M;
1038 port->full_duplex = 0;
1039 break;
1040 case H_SPEED_100M_F:
1041 port->port_speed = EHEA_SPEED_100M;
1042 port->full_duplex = 1;
1043 break;
1044 case H_SPEED_1G_F:
1045 port->port_speed = EHEA_SPEED_1G;
1046 port->full_duplex = 1;
1047 break;
1048 case H_SPEED_10G_F:
1049 port->port_speed = EHEA_SPEED_10G;
1050 port->full_duplex = 1;
1051 break;
1052 default:
1053 port->port_speed = 0;
1054 port->full_duplex = 0;
1055 break;
1056 }
1057
e919b593 1058 port->autoneg = 1;
18604c54 1059 port->num_mcs = cb0->num_default_qps;
e919b593 1060
7a291083 1061 /* Number of default QPs */
18604c54
JBT		 1062 if (use_mcs)
1063 port->num_def_qps = cb0->num_default_qps;
1064 else
1065 port->num_def_qps = 1;
7a291083
JBT		 1066
1067 if (!port->num_def_qps) {
1068 ret = -EINVAL;
1069 goto out_free;
1070 }
1071
7a291083
JBT		 1072 ret = 0;
1073out_free:
1074 if (ret || netif_msg_probe(port))
1075 ehea_dump(cb0, sizeof(*cb0), "ehea_sense_port_attr");
3faf2693 1076 free_page((unsigned long)cb0);
7a291083
JBT		 1077out:
1078 return ret;
1079}
1080
1081int ehea_set_portspeed(struct ehea_port *port, u32 port_speed)
1082{
1083 struct hcp_ehea_port_cb4 *cb4;
1084 u64 hret;
1085 int ret = 0;
1086
3faf2693 1087 cb4 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083 1088 if (!cb4) {
8c4877a4 1089 pr_err("no mem for cb4\n");
7a291083
JBT		 1090 ret = -ENOMEM;
1091 goto out;
1092 }
1093
1094 cb4->port_speed = port_speed;
1095
1096 netif_carrier_off(port->netdev);
1097
1098 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1099 port->logical_port_id,
1100 H_PORT_CB4, H_PORT_CB4_SPEED, cb4);
1101 if (hret == H_SUCCESS) {
1102 port->autoneg = port_speed == EHEA_SPEED_AUTONEG ? 1 : 0;
1103
1104 hret = ehea_h_query_ehea_port(port->adapter->handle,
1105 port->logical_port_id,
1106 H_PORT_CB4, H_PORT_CB4_SPEED,
1107 cb4);
1108 if (hret == H_SUCCESS) {
1109 switch (cb4->port_speed) {
1110 case H_SPEED_10M_H:
1111 port->port_speed = EHEA_SPEED_10M;
1112 port->full_duplex = 0;
1113 break;
1114 case H_SPEED_10M_F:
1115 port->port_speed = EHEA_SPEED_10M;
1116 port->full_duplex = 1;
1117 break;
1118 case H_SPEED_100M_H:
1119 port->port_speed = EHEA_SPEED_100M;
1120 port->full_duplex = 0;
1121 break;
1122 case H_SPEED_100M_F:
1123 port->port_speed = EHEA_SPEED_100M;
1124 port->full_duplex = 1;
1125 break;
1126 case H_SPEED_1G_F:
1127 port->port_speed = EHEA_SPEED_1G;
1128 port->full_duplex = 1;
1129 break;
1130 case H_SPEED_10G_F:
1131 port->port_speed = EHEA_SPEED_10G;
1132 port->full_duplex = 1;
1133 break;
1134 default:
1135 port->port_speed = 0;
1136 port->full_duplex = 0;
1137 break;
1138 }
1139 } else {
8c4877a4 1140 pr_err("Failed sensing port speed\n");
7a291083
JBT		 1141 ret = -EIO;
1142 }
1143 } else {
1144 if (hret == H_AUTHORITY) {
8c4877a4 1145 pr_info("Hypervisor denied setting port speed\n");
7a291083
JBT		 1146 ret = -EPERM;
1147 } else {
1148 ret = -EIO;
8c4877a4 1149 pr_err("Failed setting port speed\n");
7a291083
JBT		 1150 }
1151 }
8759cf76
JBT		 1152 if (!prop_carrier_state || (port->phy_link == EHEA_PHY_LINK_UP))
1153 netif_carrier_on(port->netdev);
1154
3faf2693 1155 free_page((unsigned long)cb4);
7a291083
JBT		 1156out:
1157 return ret;
1158}
1159
1160static void ehea_parse_eqe(struct ehea_adapter *adapter, u64 eqe)
1161{
1162 int ret;
1163 u8 ec;
1164 u8 portnum;
1165 struct ehea_port *port;
8c4877a4 1166 struct net_device *dev;
7a291083
JBT		 1167
1168 ec = EHEA_BMASK_GET(NEQE_EVENT_CODE, eqe);
1169 portnum = EHEA_BMASK_GET(NEQE_PORTNUM, eqe);
1170 port = ehea_get_port(adapter, portnum);
8c4877a4 1171 dev = port->netdev;
7a291083
JBT		 1172
1173 switch (ec) {
1174 case EHEA_EC_PORTSTATE_CHG: /* port state change */
1175
1176 if (!port) {
8c4877a4 1177 netdev_err(dev, "unknown portnum %x\n", portnum);
7a291083
JBT		 1178 break;
1179 }
1180
1181 if (EHEA_BMASK_GET(NEQE_PORT_UP, eqe)) {
8c4877a4 1182 if (!netif_carrier_ok(dev)) {
1e1675cc 1183 ret = ehea_sense_port_attr(port);
7a291083 1184 if (ret) {
8c4877a4 1185 netdev_err(dev, "failed resensing port attributes\n");
7a291083
JBT		 1186 break;
1187 }
1188
8c4877a4
JP		 1189 netif_info(port, link, dev,
1190 "Logical port up: %dMbps %s Duplex\n",
1191 port->port_speed,
1192 port->full_duplex == 1 ?
1193 "Full" : "Half");
7a291083 1194
8c4877a4
JP		 1195 netif_carrier_on(dev);
1196 netif_wake_queue(dev);
7a291083
JBT		 1197 }
1198 } else
8c4877a4
JP		 1199 if (netif_carrier_ok(dev)) {
1200 netif_info(port, link, dev,
1201 "Logical port down\n");
1202 netif_carrier_off(dev);
b9564468 1203 netif_tx_disable(dev);
7a291083
JBT		 1204 }
1205
1206 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PORT_UP, eqe)) {
8759cf76 1207 port->phy_link = EHEA_PHY_LINK_UP;
8c4877a4
JP		 1208 netif_info(port, link, dev,
1209 "Physical port up\n");
8759cf76 1210 if (prop_carrier_state)
8c4877a4 1211 netif_carrier_on(dev);
7a291083 1212 } else {
8759cf76 1213 port->phy_link = EHEA_PHY_LINK_DOWN;
8c4877a4
JP		 1214 netif_info(port, link, dev,
1215 "Physical port down\n");
8759cf76 1216 if (prop_carrier_state)
8c4877a4 1217 netif_carrier_off(dev);
7a291083
JBT		 1218 }
1219
1220 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PRIMARY, eqe))
8c4877a4
JP		 1221 netdev_info(dev,
1222 "External switch port is primary port\n");
7a291083 1223 else
8c4877a4
JP		 1224 netdev_info(dev,
1225 "External switch port is backup port\n");
7a291083
JBT		 1226
1227 break;
1228 case EHEA_EC_ADAPTER_MALFUNC:
8c4877a4 1229 netdev_err(dev, "Adapter malfunction\n");
7a291083
JBT		 1230 break;
1231 case EHEA_EC_PORT_MALFUNC:
8c4877a4
JP		 1232 netdev_info(dev, "Port malfunction\n");
1233 netif_carrier_off(dev);
b9564468 1234 netif_tx_disable(dev);
7a291083
JBT		 1235 break;
1236 default:
8c4877a4 1237 netdev_err(dev, "unknown event code %x, eqe=0x%llX\n", ec, eqe);
7a291083
JBT		 1238 break;
1239 }
1240}
1241
1242static void ehea_neq_tasklet(unsigned long data)
1243{
508d2b5d 1244 struct ehea_adapter *adapter = (struct ehea_adapter *)data;
7a291083
JBT		 1245 struct ehea_eqe *eqe;
1246 u64 event_mask;
1247
1248 eqe = ehea_poll_eq(adapter->neq);
8c4877a4 1249 pr_debug("eqe=%p\n", eqe);
7a291083
JBT		 1250
1251 while (eqe) {
8c4877a4 1252 pr_debug("*eqe=%lx\n", (unsigned long) eqe->entry);
7a291083
JBT		 1253 ehea_parse_eqe(adapter, eqe->entry);
1254 eqe = ehea_poll_eq(adapter->neq);
8c4877a4 1255 pr_debug("next eqe=%p\n", eqe);
7a291083
JBT		 1256 }
1257
1258 event_mask = EHEA_BMASK_SET(NELR_PORTSTATE_CHG, 1)
1259 | EHEA_BMASK_SET(NELR_ADAPTER_MALFUNC, 1)
1260 | EHEA_BMASK_SET(NELR_PORT_MALFUNC, 1);
1261
1262 ehea_h_reset_events(adapter->handle,
1263 adapter->neq->fw_handle, event_mask);
1264}
1265
7d12e780 1266static irqreturn_t ehea_interrupt_neq(int irq, void *param)
7a291083
JBT		 1267{
1268 struct ehea_adapter *adapter = param;
1269 tasklet_hi_schedule(&adapter->neq_tasklet);
1270 return IRQ_HANDLED;
1271}
1272
1273
1274static int ehea_fill_port_res(struct ehea_port_res *pr)
1275{
1276 int ret;
1277 struct ehea_qp_init_attr *init_attr = &pr->qp->init_attr;
1278
f76957fc 1279 ehea_init_fill_rq1(pr, pr->rq1_skba.len);
7a291083 1280
e2878806 1281 ret = ehea_refill_rq2(pr, init_attr->act_nr_rwqes_rq2 - 1);
7a291083
JBT		 1282
1283 ret |= ehea_refill_rq3(pr, init_attr->act_nr_rwqes_rq3 - 1);
1284
1285 return ret;
1286}
1287
1288static int ehea_reg_interrupts(struct net_device *dev)
1289{
1290 struct ehea_port *port = netdev_priv(dev);
1291 struct ehea_port_res *pr;
1292 int i, ret;
1293
7a291083
JBT		 1294
1295 snprintf(port->int_aff_name, EHEA_IRQ_NAME_SIZE - 1, "%s-aff",
1296 dev->name);
1297
6b08f3ae 1298 ret = ibmebus_request_irq(port->qp_eq->attr.ist1,
7a291083 1299 ehea_qp_aff_irq_handler,
46c915f8 1300 0, port->int_aff_name, port);
7a291083 1301 if (ret) {
8c4877a4
JP		 1302 netdev_err(dev, "failed registering irq for qp_aff_irq_handler:ist=%X\n",
1303 port->qp_eq->attr.ist1);
7a291083
JBT		 1304 goto out_free_qpeq;
1305 }
1306
8c4877a4
JP		 1307 netif_info(port, ifup, dev,
1308 "irq_handle 0x%X for function qp_aff_irq_handler registered\n",
1309 port->qp_eq->attr.ist1);
7a291083 1310
18604c54 1311
723f28e4 1312 for (i = 0; i < port->num_def_qps; i++) {
7a291083
JBT		 1313 pr = &port->port_res[i];
1314 snprintf(pr->int_send_name, EHEA_IRQ_NAME_SIZE - 1,
18604c54 1315 "%s-queue%d", dev->name, i);
6b08f3ae 1316 ret = ibmebus_request_irq(pr->eq->attr.ist1,
18604c54 1317 ehea_recv_irq_handler,
46c915f8 1318 0, pr->int_send_name, pr);
7a291083 1319 if (ret) {
8c4877a4
JP		 1320 netdev_err(dev, "failed registering irq for ehea_queue port_res_nr:%d, ist=%X\n",
1321 i, pr->eq->attr.ist1);
7a291083
JBT		 1322 goto out_free_req;
1323 }
8c4877a4
JP		 1324 netif_info(port, ifup, dev,
1325 "irq_handle 0x%X for function ehea_queue_int %d registered\n",
1326 pr->eq->attr.ist1, i);
7a291083
JBT		 1327 }
1328out:
1329 return ret;
1330
18604c54 1331
7a291083
JBT		 1332out_free_req:
1333 while (--i >= 0) {
18604c54 1334 u32 ist = port->port_res[i].eq->attr.ist1;
6b08f3ae 1335 ibmebus_free_irq(ist, &port->port_res[i]);
7a291083 1336 }
18604c54 1337
7a291083 1338out_free_qpeq:
6b08f3ae 1339 ibmebus_free_irq(port->qp_eq->attr.ist1, port);
7a291083 1340 i = port->num_def_qps;
18604c54 1341
7a291083 1342 goto out;
18604c54 1343
7a291083
JBT		 1344}
1345
1346static void ehea_free_interrupts(struct net_device *dev)
1347{
1348 struct ehea_port *port = netdev_priv(dev);
1349 struct ehea_port_res *pr;
1350 int i;
1351
1352 /* send */
18604c54 1353
723f28e4 1354 for (i = 0; i < port->num_def_qps; i++) {
7a291083 1355 pr = &port->port_res[i];
6b08f3ae 1356 ibmebus_free_irq(pr->eq->attr.ist1, pr);
8c4877a4
JP		 1357 netif_info(port, intr, dev,
1358 "free send irq for res %d with handle 0x%X\n",
1359 i, pr->eq->attr.ist1);
7a291083
JBT		 1360 }
1361
1362 /* associated events */
6b08f3ae 1363 ibmebus_free_irq(port->qp_eq->attr.ist1, port);
8c4877a4
JP		 1364 netif_info(port, intr, dev,
1365 "associated event interrupt for handle 0x%X freed\n",
1366 port->qp_eq->attr.ist1);
7a291083
JBT		 1367}
1368
1369static int ehea_configure_port(struct ehea_port *port)
1370{
1371 int ret, i;
1372 u64 hret, mask;
1373 struct hcp_ehea_port_cb0 *cb0;
1374
1375 ret = -ENOMEM;
3faf2693 1376 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083
JBT		 1377 if (!cb0)
1378 goto out;
1379
1380 cb0->port_rc = EHEA_BMASK_SET(PXLY_RC_VALID, 1)
1381 | EHEA_BMASK_SET(PXLY_RC_IP_CHKSUM, 1)
1382 | EHEA_BMASK_SET(PXLY_RC_TCP_UDP_CHKSUM, 1)
1383 | EHEA_BMASK_SET(PXLY_RC_VLAN_XTRACT, 1)
1384 | EHEA_BMASK_SET(PXLY_RC_VLAN_TAG_FILTER,
1385 PXLY_RC_VLAN_FILTER)
1386 | EHEA_BMASK_SET(PXLY_RC_JUMBO_FRAME, 1);
1387
18604c54
JBT		 1388 for (i = 0; i < port->num_mcs; i++)
1389 if (use_mcs)
1390 cb0->default_qpn_arr[i] =
1391 port->port_res[i].qp->init_attr.qp_nr;
1392 else
1393 cb0->default_qpn_arr[i] =
1394 port->port_res[0].qp->init_attr.qp_nr;
e542aa6b 1395
7a291083
JBT		 1396 if (netif_msg_ifup(port))
1397 ehea_dump(cb0, sizeof(*cb0), "ehea_configure_port");
1398
1399 mask = EHEA_BMASK_SET(H_PORT_CB0_PRC, 1)
1400 | EHEA_BMASK_SET(H_PORT_CB0_DEFQPNARRAY, 1);
1401
1402 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1403 port->logical_port_id,
1404 H_PORT_CB0, mask, cb0);
1405 ret = -EIO;
1406 if (hret != H_SUCCESS)
1407 goto out_free;
1408
1409 ret = 0;
1410
1411out_free:
3faf2693 1412 free_page((unsigned long)cb0);
7a291083
JBT		 1413out:
1414 return ret;
1415}
1416
1886e5d2 1417static int ehea_gen_smrs(struct ehea_port_res *pr)
7a291083 1418{
e542aa6b 1419 int ret;
7a291083
JBT		 1420 struct ehea_adapter *adapter = pr->port->adapter;
1421
e542aa6b
JBT		 1422 ret = ehea_gen_smr(adapter, &adapter->mr, &pr->send_mr);
1423 if (ret)
7a291083
JBT		 1424 goto out;
1425
e542aa6b
JBT		 1426 ret = ehea_gen_smr(adapter, &adapter->mr, &pr->recv_mr);
1427 if (ret)
1428 goto out_free;
7a291083
JBT		 1429
1430 return 0;
1431
e542aa6b
JBT		 1432out_free:
1433 ehea_rem_mr(&pr->send_mr);
7a291083 1434out:
8c4877a4 1435 pr_err("Generating SMRS failed\n");
7a291083
JBT		 1436 return -EIO;
1437}
1438
1886e5d2 1439static int ehea_rem_smrs(struct ehea_port_res *pr)
7a291083 1440{
8e95a202
JP		 1441 if ((ehea_rem_mr(&pr->send_mr)) ||
1442 (ehea_rem_mr(&pr->recv_mr)))
e542aa6b
JBT		 1443 return -EIO;
1444 else
1445 return 0;
7a291083
JBT		 1446}
1447
1448static int ehea_init_q_skba(struct ehea_q_skb_arr *q_skba, int max_q_entries)
1449{
508d2b5d 1450 int arr_size = sizeof(void *) * max_q_entries;
7a291083 1451
89bf67f1 1452 q_skba->arr = vzalloc(arr_size);
7a291083
JBT		 1453 if (!q_skba->arr)
1454 return -ENOMEM;
1455
7a291083
JBT		 1456 q_skba->len = max_q_entries;
1457 q_skba->index = 0;
1458 q_skba->os_skbs = 0;
1459
1460 return 0;
1461}
1462
1463static int ehea_init_port_res(struct ehea_port *port, struct ehea_port_res *pr,
1464 struct port_res_cfg *pr_cfg, int queue_token)
1465{
1466 struct ehea_adapter *adapter = port->adapter;
1467 enum ehea_eq_type eq_type = EHEA_EQ;
1468 struct ehea_qp_init_attr *init_attr = NULL;
1469 int ret = -EIO;
ce45b873
BL		 1470 u64 tx_bytes, rx_bytes, tx_packets, rx_packets;
1471
1472 tx_bytes = pr->tx_bytes;
1473 tx_packets = pr->tx_packets;
1474 rx_bytes = pr->rx_bytes;
1475 rx_packets = pr->rx_packets;
7a291083
JBT		 1476
1477 memset(pr, 0, sizeof(struct ehea_port_res));
1478
ce45b873
BL		 1479 pr->tx_bytes = rx_bytes;
1480 pr->tx_packets = tx_packets;
1481 pr->rx_bytes = rx_bytes;
1482 pr->rx_packets = rx_packets;
1483
7a291083 1484 pr->port = port;
7a291083 1485
18604c54
JBT		 1486 pr->eq = ehea_create_eq(adapter, eq_type, EHEA_MAX_ENTRIES_EQ, 0);
1487 if (!pr->eq) {
8c4877a4 1488 pr_err("create_eq failed (eq)\n");
7a291083
JBT		 1489 goto out_free;
1490 }
1491
1492 pr->recv_cq = ehea_create_cq(adapter, pr_cfg->max_entries_rcq,
18604c54 1493 pr->eq->fw_handle,
7a291083
JBT		 1494 port->logical_port_id);
1495 if (!pr->recv_cq) {
8c4877a4 1496 pr_err("create_cq failed (cq_recv)\n");
7a291083
JBT		 1497 goto out_free;
1498 }
1499
1500 pr->send_cq = ehea_create_cq(adapter, pr_cfg->max_entries_scq,
18604c54 1501 pr->eq->fw_handle,
7a291083
JBT		 1502 port->logical_port_id);
1503 if (!pr->send_cq) {
8c4877a4 1504 pr_err("create_cq failed (cq_send)\n");
7a291083
JBT		 1505 goto out_free;
1506 }
1507
1508 if (netif_msg_ifup(port))
8c4877a4
JP		 1509 pr_info("Send CQ: act_nr_cqes=%d, Recv CQ: act_nr_cqes=%d\n",
1510 pr->send_cq->attr.act_nr_of_cqes,
1511 pr->recv_cq->attr.act_nr_of_cqes);
7a291083
JBT		 1512
1513 init_attr = kzalloc(sizeof(*init_attr), GFP_KERNEL);
1514 if (!init_attr) {
1515 ret = -ENOMEM;
8c4877a4 1516 pr_err("no mem for ehea_qp_init_attr\n");
7a291083
JBT		 1517 goto out_free;
1518 }
1519
1520 init_attr->low_lat_rq1 = 1;
1521 init_attr->signalingtype = 1; /* generate CQE if specified in WQE */
1522 init_attr->rq_count = 3;
1523 init_attr->qp_token = queue_token;
1524 init_attr->max_nr_send_wqes = pr_cfg->max_entries_sq;
1525 init_attr->max_nr_rwqes_rq1 = pr_cfg->max_entries_rq1;
1526 init_attr->max_nr_rwqes_rq2 = pr_cfg->max_entries_rq2;
1527 init_attr->max_nr_rwqes_rq3 = pr_cfg->max_entries_rq3;
1528 init_attr->wqe_size_enc_sq = EHEA_SG_SQ;
1529 init_attr->wqe_size_enc_rq1 = EHEA_SG_RQ1;
1530 init_attr->wqe_size_enc_rq2 = EHEA_SG_RQ2;
1531 init_attr->wqe_size_enc_rq3 = EHEA_SG_RQ3;
1532 init_attr->rq2_threshold = EHEA_RQ2_THRESHOLD;
1533 init_attr->rq3_threshold = EHEA_RQ3_THRESHOLD;
1534 init_attr->port_nr = port->logical_port_id;
1535 init_attr->send_cq_handle = pr->send_cq->fw_handle;
1536 init_attr->recv_cq_handle = pr->recv_cq->fw_handle;
1537 init_attr->aff_eq_handle = port->qp_eq->fw_handle;
1538
1539 pr->qp = ehea_create_qp(adapter, adapter->pd, init_attr);
1540 if (!pr->qp) {
8c4877a4 1541 pr_err("create_qp failed\n");
7a291083
JBT		 1542 ret = -EIO;
1543 goto out_free;
1544 }
1545
1546 if (netif_msg_ifup(port))
8c4877a4
JP		 1547 pr_info("QP: qp_nr=%d\n act_nr_snd_wqe=%d\n nr_rwqe_rq1=%d\n nr_rwqe_rq2=%d\n nr_rwqe_rq3=%d\n",
1548 init_attr->qp_nr,
1549 init_attr->act_nr_send_wqes,
1550 init_attr->act_nr_rwqes_rq1,
1551 init_attr->act_nr_rwqes_rq2,
1552 init_attr->act_nr_rwqes_rq3);
7a291083 1553
44fb3126
TK		 1554 pr->sq_skba_size = init_attr->act_nr_send_wqes + 1;
1555
1556 ret = ehea_init_q_skba(&pr->sq_skba, pr->sq_skba_size);
7a291083
JBT		 1557 ret |= ehea_init_q_skba(&pr->rq1_skba, init_attr->act_nr_rwqes_rq1 + 1);
1558 ret |= ehea_init_q_skba(&pr->rq2_skba, init_attr->act_nr_rwqes_rq2 + 1);
1559 ret |= ehea_init_q_skba(&pr->rq3_skba, init_attr->act_nr_rwqes_rq3 + 1);
1560 if (ret)
1561 goto out_free;
1562
1563 pr->swqe_refill_th = init_attr->act_nr_send_wqes / 10;
1564 if (ehea_gen_smrs(pr) != 0) {
1565 ret = -EIO;
1566 goto out_free;
1567 }
18604c54 1568
7a291083
JBT		 1569 atomic_set(&pr->swqe_avail, init_attr->act_nr_send_wqes - 1);
1570
1571 kfree(init_attr);
18604c54 1572
bea3348e 1573 netif_napi_add(pr->port->netdev, &pr->napi, ehea_poll, 64);
18604c54 1574
7a291083
JBT		 1575 ret = 0;
1576 goto out;
1577
1578out_free:
1579 kfree(init_attr);
1580 vfree(pr->sq_skba.arr);
1581 vfree(pr->rq1_skba.arr);
1582 vfree(pr->rq2_skba.arr);
1583 vfree(pr->rq3_skba.arr);
1584 ehea_destroy_qp(pr->qp);
1585 ehea_destroy_cq(pr->send_cq);
1586 ehea_destroy_cq(pr->recv_cq);
18604c54 1587 ehea_destroy_eq(pr->eq);
7a291083
JBT		 1588out:
1589 return ret;
1590}
1591
1592static int ehea_clean_portres(struct ehea_port *port, struct ehea_port_res *pr)
1593{
1594 int ret, i;
1595
357eb46d
HH		 1596 if (pr->qp)
1597 netif_napi_del(&pr->napi);
1598
7a291083
JBT		 1599 ret = ehea_destroy_qp(pr->qp);
1600
1601 if (!ret) {
1602 ehea_destroy_cq(pr->send_cq);
1603 ehea_destroy_cq(pr->recv_cq);
18604c54 1604 ehea_destroy_eq(pr->eq);
7a291083
JBT		 1605
1606 for (i = 0; i < pr->rq1_skba.len; i++)
1607 if (pr->rq1_skba.arr[i])
1608 dev_kfree_skb(pr->rq1_skba.arr[i]);
1609
1610 for (i = 0; i < pr->rq2_skba.len; i++)
1611 if (pr->rq2_skba.arr[i])
1612 dev_kfree_skb(pr->rq2_skba.arr[i]);
1613
1614 for (i = 0; i < pr->rq3_skba.len; i++)
1615 if (pr->rq3_skba.arr[i])
1616 dev_kfree_skb(pr->rq3_skba.arr[i]);
1617
1618 for (i = 0; i < pr->sq_skba.len; i++)
1619 if (pr->sq_skba.arr[i])
1620 dev_kfree_skb(pr->sq_skba.arr[i]);
1621
1622 vfree(pr->rq1_skba.arr);
1623 vfree(pr->rq2_skba.arr);
1624 vfree(pr->rq3_skba.arr);
1625 vfree(pr->sq_skba.arr);
1626 ret = ehea_rem_smrs(pr);
1627 }
1628 return ret;
1629}
1630
13946f5e
AB		 1631static void write_swqe2_immediate(struct sk_buff *skb, struct ehea_swqe *swqe,
1632 u32 lkey)
7a291083 1633{
e743d313 1634 int skb_data_size = skb_headlen(skb);
7a291083
JBT		 1635 u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0];
1636 struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry;
13946f5e
AB		 1637 unsigned int immediate_len = SWQE2_MAX_IMM;
1638
1639 swqe->descriptors = 0;
7a291083 1640
13946f5e
AB		 1641 if (skb_is_gso(skb)) {
1642 swqe->tx_control |= EHEA_SWQE_TSO;
1643 swqe->mss = skb_shinfo(skb)->gso_size;
1644 /*
1645 * For TSO packets we only copy the headers into the
1646 * immediate area.
1647 */
1648 immediate_len = ETH_HLEN + ip_hdrlen(skb) + tcp_hdrlen(skb);
1649 }
7a291083 1650
13946f5e
AB		 1651 if (skb_is_gso(skb) || skb_data_size >= SWQE2_MAX_IMM) {
1652 skb_copy_from_linear_data(skb, imm_data, immediate_len);
1653 swqe->immediate_data_length = immediate_len;
7a291083 1654
13946f5e 1655 if (skb_data_size > immediate_len) {
7a291083 1656 sg1entry->l_key = lkey;
13946f5e 1657 sg1entry->len = skb_data_size - immediate_len;
44a5b3d5 1658 sg1entry->vaddr =
13946f5e 1659 ehea_map_vaddr(skb->data + immediate_len);
7a291083
JBT		 1660 swqe->descriptors++;
1661 }
1662 } else {
d626f62b 1663 skb_copy_from_linear_data(skb, imm_data, skb_data_size);
7a291083
JBT		 1664 swqe->immediate_data_length = skb_data_size;
1665 }
1666}
1667
1668static inline void write_swqe2_data(struct sk_buff *skb, struct net_device *dev,
1669 struct ehea_swqe *swqe, u32 lkey)
1670{
1671 struct ehea_vsgentry *sg_list, *sg1entry, *sgentry;
1672 skb_frag_t *frag;
1673 int nfrags, sg1entry_contains_frag_data, i;
7a291083
JBT		 1674
1675 nfrags = skb_shinfo(skb)->nr_frags;
1676 sg1entry = &swqe->u.immdata_desc.sg_entry;
508d2b5d 1677 sg_list = (struct ehea_vsgentry *)&swqe->u.immdata_desc.sg_list;
7a291083
JBT		 1678 sg1entry_contains_frag_data = 0;
1679
13946f5e 1680 write_swqe2_immediate(skb, swqe, lkey);
7a291083
JBT		 1681
1682 /* write descriptors */
1683 if (nfrags > 0) {
1684 if (swqe->descriptors == 0) {
1685 /* sg1entry not yet used */
1686 frag = &skb_shinfo(skb)->frags[0];
1687
1688 /* copy sg1entry data */
1689 sg1entry->l_key = lkey;
9e903e08 1690 sg1entry->len = skb_frag_size(frag);
44a5b3d5 1691 sg1entry->vaddr =
618c4a0a 1692 ehea_map_vaddr(skb_frag_address(frag));
7a291083
JBT		 1693 swqe->descriptors++;
1694 sg1entry_contains_frag_data = 1;
1695 }
1696
1697 for (i = sg1entry_contains_frag_data; i < nfrags; i++) {
1698
1699 frag = &skb_shinfo(skb)->frags[i];
1700 sgentry = &sg_list[i - sg1entry_contains_frag_data];
1701
1702 sgentry->l_key = lkey;
0110bba5 1703 sgentry->len = skb_frag_size(frag);
618c4a0a 1704 sgentry->vaddr = ehea_map_vaddr(skb_frag_address(frag));
7a291083
JBT		 1705 swqe->descriptors++;
1706 }
1707 }
1708}
1709
1710static int ehea_broadcast_reg_helper(struct ehea_port *port, u32 hcallid)
1711{
1712 int ret = 0;
1713 u64 hret;
1714 u8 reg_type;
1715
1716 /* De/Register untagged packets */
1717 reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_UNTAGGED;
1718 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1719 port->logical_port_id,
1720 reg_type, port->mac_addr, 0, hcallid);
1721 if (hret != H_SUCCESS) {
8c4877a4
JP		 1722 pr_err("%sregistering bc address failed (tagged)\n",
1723 hcallid == H_REG_BCMC ? "" : "de");
7a291083
JBT		 1724 ret = -EIO;
1725 goto out_herr;
1726 }
1727
1728 /* De/Register VLAN packets */
1729 reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_VLANID_ALL;
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) {
8c4877a4
JP		 1734 pr_err("%sregistering bc address failed (vlan)\n",
1735 hcallid == H_REG_BCMC ? "" : "de");
7a291083
JBT		 1736 ret = -EIO;
1737 }
1738out_herr:
1739 return ret;
1740}
1741
1742static int ehea_set_mac_addr(struct net_device *dev, void *sa)
1743{
1744 struct ehea_port *port = netdev_priv(dev);
1745 struct sockaddr *mac_addr = sa;
1746 struct hcp_ehea_port_cb0 *cb0;
1747 int ret;
1748 u64 hret;
1749
1750 if (!is_valid_ether_addr(mac_addr->sa_data)) {
1751 ret = -EADDRNOTAVAIL;
1752 goto out;
1753 }
1754
3faf2693 1755 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083 1756 if (!cb0) {
8c4877a4 1757 pr_err("no mem for cb0\n");
7a291083
JBT		 1758 ret = -ENOMEM;
1759 goto out;
1760 }
1761
1762 memcpy(&(cb0->port_mac_addr), &(mac_addr->sa_data[0]), ETH_ALEN);
1763
1764 cb0->port_mac_addr = cb0->port_mac_addr >> 16;
1765
1766 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1767 port->logical_port_id, H_PORT_CB0,
1768 EHEA_BMASK_SET(H_PORT_CB0_MAC, 1), cb0);
1769 if (hret != H_SUCCESS) {
1770 ret = -EIO;
1771 goto out_free;
1772 }
1773
1774 memcpy(dev->dev_addr, mac_addr->sa_data, dev->addr_len);
1775
1776 /* Deregister old MAC in pHYP */
00aaea2f
JBT		 1777 if (port->state == EHEA_PORT_UP) {
1778 ret = ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
1779 if (ret)
1780 goto out_upregs;
1781 }
7a291083
JBT		 1782
1783 port->mac_addr = cb0->port_mac_addr << 16;
1784
1785 /* Register new MAC in pHYP */
00aaea2f
JBT		 1786 if (port->state == EHEA_PORT_UP) {
1787 ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
1788 if (ret)
1789 goto out_upregs;
1790 }
7a291083
JBT		 1791
1792 ret = 0;
21eee2dd
TK		 1793
1794out_upregs:
1795 ehea_update_bcmc_registrations();
7a291083 1796out_free:
3faf2693 1797 free_page((unsigned long)cb0);
7a291083
JBT		 1798out:
1799 return ret;
1800}
1801
1802static void ehea_promiscuous_error(u64 hret, int enable)
1803{
7674a588 1804 if (hret == H_AUTHORITY)
8c4877a4
JP		 1805 pr_info("Hypervisor denied %sabling promiscuous mode\n",
1806 enable == 1 ? "en" : "dis");
7674a588 1807 else
8c4877a4
JP		 1808 pr_err("failed %sabling promiscuous mode\n",
1809 enable == 1 ? "en" : "dis");
7a291083
JBT		 1810}
1811
1812static void ehea_promiscuous(struct net_device *dev, int enable)
1813{
1814 struct ehea_port *port = netdev_priv(dev);
1815 struct hcp_ehea_port_cb7 *cb7;
1816 u64 hret;
1817
aa3bc6c6 1818 if (enable == port->promisc)
7a291083
JBT		 1819 return;
1820
3faf2693 1821 cb7 = (void *)get_zeroed_page(GFP_ATOMIC);
7a291083 1822 if (!cb7) {
8c4877a4 1823 pr_err("no mem for cb7\n");
7a291083
JBT		 1824 goto out;
1825 }
1826
1827 /* Modify Pxs_DUCQPN in CB7 */
1828 cb7->def_uc_qpn = enable == 1 ? port->port_res[0].qp->fw_handle : 0;
1829
1830 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1831 port->logical_port_id,
1832 H_PORT_CB7, H_PORT_CB7_DUCQPN, cb7);
1833 if (hret) {
1834 ehea_promiscuous_error(hret, enable);
1835 goto out;
1836 }
1837
1838 port->promisc = enable;
1839out:
3faf2693 1840 free_page((unsigned long)cb7);
7a291083
JBT		 1841}
1842
1843static u64 ehea_multicast_reg_helper(struct ehea_port *port, u64 mc_mac_addr,
1844 u32 hcallid)
1845{
1846 u64 hret;
1847 u8 reg_type;
1848
5d384574
TLSC		 1849 reg_type = EHEA_BCMC_MULTICAST | EHEA_BCMC_UNTAGGED;
1850 if (mc_mac_addr == 0)
1851 reg_type |= EHEA_BCMC_SCOPE_ALL;
7a291083
JBT		 1852
1853 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1854 port->logical_port_id,
1855 reg_type, mc_mac_addr, 0, hcallid);
1856 if (hret)
1857 goto out;
1858
5d384574
TLSC		 1859 reg_type = EHEA_BCMC_MULTICAST | EHEA_BCMC_VLANID_ALL;
1860 if (mc_mac_addr == 0)
1861 reg_type |= EHEA_BCMC_SCOPE_ALL;
7a291083
JBT		 1862
1863 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1864 port->logical_port_id,
1865 reg_type, mc_mac_addr, 0, hcallid);
1866out:
1867 return hret;
1868}
1869
1870static int ehea_drop_multicast_list(struct net_device *dev)
1871{
1872 struct ehea_port *port = netdev_priv(dev);
1873 struct ehea_mc_list *mc_entry = port->mc_list;
1874 struct list_head *pos;
1875 struct list_head *temp;
1876 int ret = 0;
1877 u64 hret;
1878
1879 list_for_each_safe(pos, temp, &(port->mc_list->list)) {
1880 mc_entry = list_entry(pos, struct ehea_mc_list, list);
1881
1882 hret = ehea_multicast_reg_helper(port, mc_entry->macaddr,
1883 H_DEREG_BCMC);
1884 if (hret) {
8c4877a4 1885 pr_err("failed deregistering mcast MAC\n");
7a291083
JBT		 1886 ret = -EIO;
1887 }
1888
1889 list_del(pos);
1890 kfree(mc_entry);
1891 }
1892 return ret;
1893}
1894
1895static void ehea_allmulti(struct net_device *dev, int enable)
1896{
1897 struct ehea_port *port = netdev_priv(dev);
1898 u64 hret;
1899
1900 if (!port->allmulti) {
1901 if (enable) {
1902 /* Enable ALLMULTI */
1903 ehea_drop_multicast_list(dev);
1904 hret = ehea_multicast_reg_helper(port, 0, H_REG_BCMC);
1905 if (!hret)
1906 port->allmulti = 1;
1907 else
8c4877a4
JP		 1908 netdev_err(dev,
1909 "failed enabling IFF_ALLMULTI\n");
7a291083 1910 }
5d384574 1911 } else {
7a291083
JBT		 1912 if (!enable) {
1913 /* Disable ALLMULTI */
1914 hret = ehea_multicast_reg_helper(port, 0, H_DEREG_BCMC);
1915 if (!hret)
1916 port->allmulti = 0;
1917 else
8c4877a4
JP		 1918 netdev_err(dev,
1919 "failed disabling IFF_ALLMULTI\n");
7a291083 1920 }
5d384574 1921 }
7a291083
JBT		 1922}
1923
508d2b5d 1924static void ehea_add_multicast_entry(struct ehea_port *port, u8 *mc_mac_addr)
7a291083
JBT		 1925{
1926 struct ehea_mc_list *ehea_mcl_entry;
1927 u64 hret;
1928
1e1675cc 1929 ehea_mcl_entry = kzalloc(sizeof(*ehea_mcl_entry), GFP_ATOMIC);
b2adaca9 1930 if (!ehea_mcl_entry)
7a291083 1931 return;
7a291083
JBT		 1932
1933 INIT_LIST_HEAD(&ehea_mcl_entry->list);
1934
1935 memcpy(&ehea_mcl_entry->macaddr, mc_mac_addr, ETH_ALEN);
1936
1937 hret = ehea_multicast_reg_helper(port, ehea_mcl_entry->macaddr,
1938 H_REG_BCMC);
1939 if (!hret)
1940 list_add(&ehea_mcl_entry->list, &port->mc_list->list);
1941 else {
8c4877a4 1942 pr_err("failed registering mcast MAC\n");
7a291083
JBT		 1943 kfree(ehea_mcl_entry);
1944 }
1945}
1946
1947static void ehea_set_multicast_list(struct net_device *dev)
1948{
1949 struct ehea_port *port = netdev_priv(dev);
22bedad3 1950 struct netdev_hw_addr *ha;
48e2f183 1951 int ret;
7a291083 1952
47d59d01 1953 ehea_promiscuous(dev, !!(dev->flags & IFF_PROMISC));
7a291083
JBT		 1954
1955 if (dev->flags & IFF_ALLMULTI) {
1956 ehea_allmulti(dev, 1);
21eee2dd 1957 goto out;
7a291083
JBT		 1958 }
1959 ehea_allmulti(dev, 0);
1960
4cd24eaf 1961 if (!netdev_mc_empty(dev)) {
7a291083
JBT		 1962 ret = ehea_drop_multicast_list(dev);
1963 if (ret) {
1964 /* Dropping the current multicast list failed.
1965 * Enabling ALL_MULTI is the best we can do.
1966 */
1967 ehea_allmulti(dev, 1);
1968 }
1969
4cd24eaf 1970 if (netdev_mc_count(dev) > port->adapter->max_mc_mac) {
8c4877a4
JP		 1971 pr_info("Mcast registration limit reached (0x%llx). Use ALLMULTI!\n",
1972 port->adapter->max_mc_mac);
7a291083
JBT		 1973 goto out;
1974 }
1975
22bedad3
JP		 1976 netdev_for_each_mc_addr(ha, dev)
1977 ehea_add_multicast_entry(port, ha->addr);
508d2b5d 1978
7a291083
JBT		 1979 }
1980out:
21eee2dd 1981 ehea_update_bcmc_registrations();
7a291083
JBT		 1982}
1983
1984static int ehea_change_mtu(struct net_device *dev, int new_mtu)
1985{
1986 if ((new_mtu < 68) || (new_mtu > EHEA_MAX_PACKET_SIZE))
1987 return -EINVAL;
1988 dev->mtu = new_mtu;
1989 return 0;
1990}
1991
d695c335 1992static void xmit_common(struct sk_buff *skb, struct ehea_swqe *swqe)
7a291083 1993{
d695c335 1994 swqe->tx_control |= EHEA_SWQE_IMM_DATA_PRESENT | EHEA_SWQE_CRC;
d1d25aab 1995
d695c335
AB		 1996 if (skb->protocol != htons(ETH_P_IP))
1997 return;
7a291083 1998
d695c335
AB		 1999 if (skb->ip_summed == CHECKSUM_PARTIAL)
2000 swqe->tx_control |= EHEA_SWQE_IP_CHECKSUM;
7a291083 2001
d695c335
AB		 2002 swqe->ip_start = skb_network_offset(skb);
2003 swqe->ip_end = swqe->ip_start + ip_hdrlen(skb) - 1;
7a291083 2004
d695c335
AB		 2005 switch (ip_hdr(skb)->protocol) {
2006 case IPPROTO_UDP:
2007 if (skb->ip_summed == CHECKSUM_PARTIAL)
2008 swqe->tx_control |= EHEA_SWQE_TCP_CHECKSUM;
7a291083 2009
d695c335
AB		 2010 swqe->tcp_offset = swqe->ip_end + 1 +
2011 offsetof(struct udphdr, check);
d695c335
AB		 2012 break;
2013
2014 case IPPROTO_TCP:
2015 if (skb->ip_summed == CHECKSUM_PARTIAL)
2016 swqe->tx_control |= EHEA_SWQE_TCP_CHECKSUM;
2017
2018 swqe->tcp_offset = swqe->ip_end + 1 +
2019 offsetof(struct tcphdr, check);
d695c335 2020 break;
7a291083 2021 }
d695c335
AB		 2022}
2023
2024static void ehea_xmit2(struct sk_buff *skb, struct net_device *dev,
2025 struct ehea_swqe *swqe, u32 lkey)
2026{
2027 swqe->tx_control |= EHEA_SWQE_DESCRIPTORS_PRESENT;
2028
2029 xmit_common(skb, swqe);
7a291083
JBT		 2030
2031 write_swqe2_data(skb, dev, swqe, lkey);
2032}
2033
2034static void ehea_xmit3(struct sk_buff *skb, struct net_device *dev,
2035 struct ehea_swqe *swqe)
2036{
7a291083 2037 u8 *imm_data = &swqe->u.immdata_nodesc.immediate_data[0];
7a291083 2038
d695c335 2039 xmit_common(skb, swqe);
d1d25aab 2040
30e2e90b 2041 if (!skb->data_len)
d626f62b 2042 skb_copy_from_linear_data(skb, imm_data, skb->len);
30e2e90b
AB		 2043 else
2044 skb_copy_bits(skb, 0, imm_data, skb->len);
d695c335 2045
7a291083
JBT		 2046 swqe->immediate_data_length = skb->len;
2047 dev_kfree_skb(skb);
2048}
2049
2050static int ehea_start_xmit(struct sk_buff *skb, struct net_device *dev)
2051{
2052 struct ehea_port *port = netdev_priv(dev);
2053 struct ehea_swqe *swqe;
7a291083
JBT		 2054 u32 lkey;
2055 int swqe_index;
18604c54 2056 struct ehea_port_res *pr;
b9564468 2057 struct netdev_queue *txq;
18604c54 2058
b9564468
AB		 2059 pr = &port->port_res[skb_get_queue_mapping(skb)];
2060 txq = netdev_get_tx_queue(dev, skb_get_queue_mapping(skb));
18604c54 2061
7a291083
JBT		 2062 swqe = ehea_get_swqe(pr->qp, &swqe_index);
2063 memset(swqe, 0, SWQE_HEADER_SIZE);
2064 atomic_dec(&pr->swqe_avail);
2065
e5ccd961
ED		 2066 if (vlan_tx_tag_present(skb)) {
2067 swqe->tx_control |= EHEA_SWQE_VLAN_INSERT;
2068 swqe->vlan_tag = vlan_tx_tag_get(skb);
2069 }
2070
ce45b873
BL		 2071 pr->tx_packets++;
2072 pr->tx_bytes += skb->len;
2073
7a291083
JBT		 2074 if (skb->len <= SWQE3_MAX_IMM) {
2075 u32 sig_iv = port->sig_comp_iv;
2076 u32 swqe_num = pr->swqe_id_counter;
2077 ehea_xmit3(skb, dev, swqe);
2078 swqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE3_TYPE)
2079 | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, swqe_num);
2080 if (pr->swqe_ll_count >= (sig_iv - 1)) {
2081 swqe->wr_id |= EHEA_BMASK_SET(EHEA_WR_ID_REFILL,
2082 sig_iv);
2083 swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
2084 pr->swqe_ll_count = 0;
2085 } else
2086 pr->swqe_ll_count += 1;
2087 } else {
2088 swqe->wr_id =
2089 EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE2_TYPE)
2090 | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, pr->swqe_id_counter)
acbddb59 2091 | EHEA_BMASK_SET(EHEA_WR_ID_REFILL, 1)
7a291083
JBT		 2092 | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, pr->sq_skba.index);
2093 pr->sq_skba.arr[pr->sq_skba.index] = skb;
2094
2095 pr->sq_skba.index++;
2096 pr->sq_skba.index &= (pr->sq_skba.len - 1);
2097
2098 lkey = pr->send_mr.lkey;
2099 ehea_xmit2(skb, dev, swqe, lkey);
acbddb59 2100 swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
7a291083
JBT		 2101 }
2102 pr->swqe_id_counter += 1;
2103
8c4877a4
JP		 2104 netif_info(port, tx_queued, dev,
2105 "post swqe on QP %d\n", pr->qp->init_attr.qp_nr);
2106 if (netif_msg_tx_queued(port))
bff0a55f 2107 ehea_dump(swqe, 512, "swqe");
7a291083 2108
2c69448b 2109 if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) {
b9564468 2110 netif_tx_stop_queue(txq);
2c69448b
JBT		 2111 swqe->tx_control |= EHEA_SWQE_PURGE;
2112 }
44c82152 2113
7a291083 2114 ehea_post_swqe(pr->qp, swqe);
7a291083
JBT		 2115
2116 if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) {
b9564468
AB		 2117 pr->p_stats.queue_stopped++;
2118 netif_tx_stop_queue(txq);
7a291083 2119 }
2c69448b 2120
7a291083
JBT		 2121 return NETDEV_TX_OK;
2122}
2123
80d5c368 2124static int ehea_vlan_rx_add_vid(struct net_device *dev, __be16 proto, u16 vid)
7a291083
JBT		 2125{
2126 struct ehea_port *port = netdev_priv(dev);
2127 struct ehea_adapter *adapter = port->adapter;
2128 struct hcp_ehea_port_cb1 *cb1;
2129 int index;
2130 u64 hret;
8e586137 2131 int err = 0;
7a291083 2132
3faf2693 2133 cb1 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083 2134 if (!cb1) {
8c4877a4 2135 pr_err("no mem for cb1\n");
8e586137 2136 err = -ENOMEM;
7a291083
JBT		 2137 goto out;
2138 }
2139
2140 hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
2141 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2142 if (hret != H_SUCCESS) {
8c4877a4 2143 pr_err("query_ehea_port failed\n");
8e586137 2144 err = -EINVAL;
7a291083
JBT		 2145 goto out;
2146 }
2147
2148 index = (vid / 64);
dec590c1 2149 cb1->vlan_filter[index] |= ((u64)(0x8000000000000000 >> (vid & 0x3F)));
7a291083
JBT		 2150
2151 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
2152 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
8e586137 2153 if (hret != H_SUCCESS) {
8c4877a4 2154 pr_err("modify_ehea_port failed\n");
8e586137
JP		 2155 err = -EINVAL;
2156 }
7a291083 2157out:
3faf2693 2158 free_page((unsigned long)cb1);
8e586137 2159 return err;
7a291083
JBT		 2160}
2161
80d5c368 2162static int ehea_vlan_rx_kill_vid(struct net_device *dev, __be16 proto, u16 vid)
7a291083
JBT		 2163{
2164 struct ehea_port *port = netdev_priv(dev);
2165 struct ehea_adapter *adapter = port->adapter;
2166 struct hcp_ehea_port_cb1 *cb1;
2167 int index;
2168 u64 hret;
8e586137 2169 int err = 0;
7a291083 2170
3faf2693 2171 cb1 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083 2172 if (!cb1) {
8c4877a4 2173 pr_err("no mem for cb1\n");
8e586137 2174 err = -ENOMEM;
7a291083
JBT		 2175 goto out;
2176 }
2177
2178 hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
2179 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2180 if (hret != H_SUCCESS) {
8c4877a4 2181 pr_err("query_ehea_port failed\n");
8e586137 2182 err = -EINVAL;
7a291083
JBT		 2183 goto out;
2184 }
2185
2186 index = (vid / 64);
dec590c1 2187 cb1->vlan_filter[index] &= ~((u64)(0x8000000000000000 >> (vid & 0x3F)));
7a291083
JBT		 2188
2189 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
2190 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
8e586137 2191 if (hret != H_SUCCESS) {
8c4877a4 2192 pr_err("modify_ehea_port failed\n");
8e586137
JP		 2193 err = -EINVAL;
2194 }
7a291083 2195out:
3faf2693 2196 free_page((unsigned long)cb1);
8e586137 2197 return err;
7a291083
JBT		 2198}
2199
1886e5d2 2200static int ehea_activate_qp(struct ehea_adapter *adapter, struct ehea_qp *qp)
7a291083
JBT		 2201{
2202 int ret = -EIO;
2203 u64 hret;
2204 u16 dummy16 = 0;
2205 u64 dummy64 = 0;
508d2b5d 2206 struct hcp_modify_qp_cb0 *cb0;
7a291083 2207
3faf2693 2208 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083
JBT		 2209 if (!cb0) {
2210 ret = -ENOMEM;
2211 goto out;
2212 }
2213
2214 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2215 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2216 if (hret != H_SUCCESS) {
8c4877a4 2217 pr_err("query_ehea_qp failed (1)\n");
7a291083
JBT		 2218 goto out;
2219 }
2220
2221 cb0->qp_ctl_reg = H_QP_CR_STATE_INITIALIZED;
2222 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2223 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2224 &dummy64, &dummy64, &dummy16, &dummy16);
2225 if (hret != H_SUCCESS) {
8c4877a4 2226 pr_err("modify_ehea_qp failed (1)\n");
7a291083
JBT		 2227 goto out;
2228 }
2229
2230 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2231 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2232 if (hret != H_SUCCESS) {
8c4877a4 2233 pr_err("query_ehea_qp failed (2)\n");
7a291083
JBT		 2234 goto out;
2235 }
2236
2237 cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_INITIALIZED;
2238 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2239 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2240 &dummy64, &dummy64, &dummy16, &dummy16);
2241 if (hret != H_SUCCESS) {
8c4877a4 2242 pr_err("modify_ehea_qp failed (2)\n");
7a291083
JBT		 2243 goto out;
2244 }
2245
2246 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2247 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2248 if (hret != H_SUCCESS) {
8c4877a4 2249 pr_err("query_ehea_qp failed (3)\n");
7a291083
JBT		 2250 goto out;
2251 }
2252
2253 cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_RDY2SND;
2254 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2255 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2256 &dummy64, &dummy64, &dummy16, &dummy16);
2257 if (hret != H_SUCCESS) {
8c4877a4 2258 pr_err("modify_ehea_qp failed (3)\n");
7a291083
JBT		 2259 goto out;
2260 }
2261
2262 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2263 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2264 if (hret != H_SUCCESS) {
8c4877a4 2265 pr_err("query_ehea_qp failed (4)\n");
7a291083
JBT		 2266 goto out;
2267 }
2268
2269 ret = 0;
2270out:
3faf2693 2271 free_page((unsigned long)cb0);
7a291083
JBT		 2272 return ret;
2273}
2274
723f28e4 2275static int ehea_port_res_setup(struct ehea_port *port, int def_qps)
7a291083
JBT		 2276{
2277 int ret, i;
2278 struct port_res_cfg pr_cfg, pr_cfg_small_rx;
2279 enum ehea_eq_type eq_type = EHEA_EQ;
2280
2281 port->qp_eq = ehea_create_eq(port->adapter, eq_type,
2282 EHEA_MAX_ENTRIES_EQ, 1);
2283 if (!port->qp_eq) {
2284 ret = -EINVAL;
8c4877a4 2285 pr_err("ehea_create_eq failed (qp_eq)\n");
7a291083
JBT		 2286 goto out_kill_eq;
2287 }
2288
2289 pr_cfg.max_entries_rcq = rq1_entries + rq2_entries + rq3_entries;
18604c54 2290 pr_cfg.max_entries_scq = sq_entries * 2;
7a291083
JBT		 2291 pr_cfg.max_entries_sq = sq_entries;
2292 pr_cfg.max_entries_rq1 = rq1_entries;
2293 pr_cfg.max_entries_rq2 = rq2_entries;
2294 pr_cfg.max_entries_rq3 = rq3_entries;
2295
2296 pr_cfg_small_rx.max_entries_rcq = 1;
2297 pr_cfg_small_rx.max_entries_scq = sq_entries;
2298 pr_cfg_small_rx.max_entries_sq = sq_entries;
2299 pr_cfg_small_rx.max_entries_rq1 = 1;
2300 pr_cfg_small_rx.max_entries_rq2 = 1;
2301 pr_cfg_small_rx.max_entries_rq3 = 1;
2302
2303 for (i = 0; i < def_qps; i++) {
2304 ret = ehea_init_port_res(port, &port->port_res[i], &pr_cfg, i);
2305 if (ret)
2306 goto out_clean_pr;
2307 }
723f28e4 2308 for (i = def_qps; i < def_qps; i++) {
7a291083
JBT		 2309 ret = ehea_init_port_res(port, &port->port_res[i],
2310 &pr_cfg_small_rx, i);
2311 if (ret)
2312 goto out_clean_pr;
2313 }
2314
2315 return 0;
2316
2317out_clean_pr:
2318 while (--i >= 0)
2319 ehea_clean_portres(port, &port->port_res[i]);
2320
2321out_kill_eq:
2322 ehea_destroy_eq(port->qp_eq);
2323 return ret;
2324}
2325
2326static int ehea_clean_all_portres(struct ehea_port *port)
2327{
2328 int ret = 0;
2329 int i;
2330
723f28e4 2331 for (i = 0; i < port->num_def_qps; i++)
7a291083
JBT		 2332 ret |= ehea_clean_portres(port, &port->port_res[i]);
2333
2334 ret |= ehea_destroy_eq(port->qp_eq);
2335
2336 return ret;
2337}
2338
35cf2e2e 2339static void ehea_remove_adapter_mr(struct ehea_adapter *adapter)
1211bb6d 2340{
35cf2e2e
TK		 2341 if (adapter->active_ports)
2342 return;
1211bb6d
TK		 2343
2344 ehea_rem_mr(&adapter->mr);
2345}
2346
35cf2e2e 2347static int ehea_add_adapter_mr(struct ehea_adapter *adapter)
1211bb6d 2348{
35cf2e2e
TK		 2349 if (adapter->active_ports)
2350 return 0;
1211bb6d
TK		 2351
2352 return ehea_reg_kernel_mr(adapter, &adapter->mr);
2353}
2354
7a291083
JBT		 2355static int ehea_up(struct net_device *dev)
2356{
2357 int ret, i;
2358 struct ehea_port *port = netdev_priv(dev);
7a291083
JBT		 2359
2360 if (port->state == EHEA_PORT_UP)
2361 return 0;
2362
723f28e4 2363 ret = ehea_port_res_setup(port, port->num_def_qps);
7a291083 2364 if (ret) {
8c4877a4 2365 netdev_err(dev, "port_res_failed\n");
7a291083
JBT		 2366 goto out;
2367 }
2368
2369 /* Set default QP for this port */
2370 ret = ehea_configure_port(port);
2371 if (ret) {
8c4877a4 2372 netdev_err(dev, "ehea_configure_port failed. ret:%d\n", ret);
7a291083
JBT		 2373 goto out_clean_pr;
2374 }
2375
7a291083
JBT		 2376 ret = ehea_reg_interrupts(dev);
2377 if (ret) {
8c4877a4 2378 netdev_err(dev, "reg_interrupts failed. ret:%d\n", ret);
f9e29228 2379 goto out_clean_pr;
7a291083
JBT		 2380 }
2381
723f28e4 2382 for (i = 0; i < port->num_def_qps; i++) {
7a291083
JBT		 2383 ret = ehea_activate_qp(port->adapter, port->port_res[i].qp);
2384 if (ret) {
8c4877a4 2385 netdev_err(dev, "activate_qp failed\n");
7a291083
JBT		 2386 goto out_free_irqs;
2387 }
2388 }
2389
508d2b5d 2390 for (i = 0; i < port->num_def_qps; i++) {
7a291083
JBT		 2391 ret = ehea_fill_port_res(&port->port_res[i]);
2392 if (ret) {
8c4877a4 2393 netdev_err(dev, "out_free_irqs\n");
7a291083
JBT		 2394 goto out_free_irqs;
2395 }
2396 }
2397
21eee2dd
TK		 2398 ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
2399 if (ret) {
2400 ret = -EIO;
2401 goto out_free_irqs;
2402 }
2403
7a291083 2404 port->state = EHEA_PORT_UP;
21eee2dd
TK		 2405
2406 ret = 0;
7a291083
JBT		 2407 goto out;
2408
2409out_free_irqs:
2410 ehea_free_interrupts(dev);
2411
7a291083
JBT		 2412out_clean_pr:
2413 ehea_clean_all_portres(port);
2414out:
44c82152 2415 if (ret)
8c4877a4 2416 netdev_info(dev, "Failed starting. ret=%i\n", ret);
44c82152 2417
21eee2dd 2418 ehea_update_bcmc_registrations();
21eee2dd 2419 ehea_update_firmware_handles();
21eee2dd 2420
7a291083
JBT		 2421 return ret;
2422}
2423
bea3348e
SH		 2424static void port_napi_disable(struct ehea_port *port)
2425{
2426 int i;
2427
723f28e4 2428 for (i = 0; i < port->num_def_qps; i++)
bea3348e
SH		 2429 napi_disable(&port->port_res[i].napi);
2430}
2431
2432static void port_napi_enable(struct ehea_port *port)
2433{
2434 int i;
2435
723f28e4 2436 for (i = 0; i < port->num_def_qps; i++)
bea3348e
SH		 2437 napi_enable(&port->port_res[i].napi);
2438}
2439
7a291083
JBT		 2440static int ehea_open(struct net_device *dev)
2441{
2442 int ret;
2443 struct ehea_port *port = netdev_priv(dev);
2444
a5af6ad3 2445 mutex_lock(&port->port_lock);
7a291083 2446
8c4877a4 2447 netif_info(port, ifup, dev, "enabling port\n");
7a291083
JBT		 2448
2449 ret = ehea_up(dev);
bea3348e
SH		 2450 if (!ret) {
2451 port_napi_enable(port);
b9564468 2452 netif_tx_start_all_queues(dev);
bea3348e 2453 }
7a291083 2454
a5af6ad3 2455 mutex_unlock(&port->port_lock);
67c170a2
AB		 2456 schedule_delayed_work(&port->stats_work,
2457 round_jiffies_relative(msecs_to_jiffies(1000)));
7a291083
JBT		 2458
2459 return ret;
2460}
2461
2462static int ehea_down(struct net_device *dev)
2463{
bea3348e 2464 int ret;
7a291083
JBT		 2465 struct ehea_port *port = netdev_priv(dev);
2466
2467 if (port->state == EHEA_PORT_DOWN)
2468 return 0;
2469
2470 ehea_drop_multicast_list(dev);
5d384574 2471 ehea_allmulti(dev, 0);
21eee2dd
TK		 2472 ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
2473
7a291083
JBT		 2474 ehea_free_interrupts(dev);
2475
7a291083 2476 port->state = EHEA_PORT_DOWN;
44c82152 2477
21eee2dd 2478 ehea_update_bcmc_registrations();
21eee2dd 2479
44c82152
TK		 2480 ret = ehea_clean_all_portres(port);
2481 if (ret)
8c4877a4 2482 netdev_info(dev, "Failed freeing resources. ret=%i\n", ret);
44c82152 2483
21eee2dd 2484 ehea_update_firmware_handles();
21eee2dd 2485
7a291083
JBT		 2486 return ret;
2487}
2488
2489static int ehea_stop(struct net_device *dev)
2490{
2491 int ret;
2492 struct ehea_port *port = netdev_priv(dev);
2493
8c4877a4 2494 netif_info(port, ifdown, dev, "disabling port\n");
7a291083 2495
2f69ae01 2496 set_bit(__EHEA_DISABLE_PORT_RESET, &port->flags);
4bb073c0 2497 cancel_work_sync(&port->reset_task);
2aefcad8 2498 cancel_delayed_work_sync(&port->stats_work);
a5af6ad3 2499 mutex_lock(&port->port_lock);
b9564468 2500 netif_tx_stop_all_queues(dev);
0173b793 2501 port_napi_disable(port);
7a291083 2502 ret = ehea_down(dev);
a5af6ad3 2503 mutex_unlock(&port->port_lock);
2f69ae01 2504 clear_bit(__EHEA_DISABLE_PORT_RESET, &port->flags);
7a291083
JBT		 2505 return ret;
2506}
2507
22559c5d 2508static void ehea_purge_sq(struct ehea_qp *orig_qp)
2c69448b
JBT		 2509{
2510 struct ehea_qp qp = *orig_qp;
2511 struct ehea_qp_init_attr *init_attr = &qp.init_attr;
2512 struct ehea_swqe *swqe;
2513 int wqe_index;
2514 int i;
2515
2516 for (i = 0; i < init_attr->act_nr_send_wqes; i++) {
2517 swqe = ehea_get_swqe(&qp, &wqe_index);
2518 swqe->tx_control |= EHEA_SWQE_PURGE;
2519 }
2520}
2521
22559c5d 2522static void ehea_flush_sq(struct ehea_port *port)
44fb3126
TK		 2523{
2524 int i;
2525
723f28e4 2526 for (i = 0; i < port->num_def_qps; i++) {
44fb3126
TK		 2527 struct ehea_port_res *pr = &port->port_res[i];
2528 int swqe_max = pr->sq_skba_size - 2 - pr->swqe_ll_count;
5b27d427
BL		 2529 int ret;
2530
2531 ret = wait_event_timeout(port->swqe_avail_wq,
2532 atomic_read(&pr->swqe_avail) >= swqe_max,
2533 msecs_to_jiffies(100));
2534
2535 if (!ret) {
8c4877a4 2536 pr_err("WARNING: sq not flushed completely\n");
5b27d427 2537 break;
44fb3126
TK		 2538 }
2539 }
2540}
2541
1886e5d2 2542static int ehea_stop_qps(struct net_device *dev)
2c69448b
JBT		 2543{
2544 struct ehea_port *port = netdev_priv(dev);
2545 struct ehea_adapter *adapter = port->adapter;
508d2b5d 2546 struct hcp_modify_qp_cb0 *cb0;
2c69448b
JBT		 2547 int ret = -EIO;
2548 int dret;
2549 int i;
2550 u64 hret;
2551 u64 dummy64 = 0;
2552 u16 dummy16 = 0;
2553
3faf2693 2554 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
2c69448b
JBT		 2555 if (!cb0) {
2556 ret = -ENOMEM;
2557 goto out;
2558 }
2559
723f28e4 2560 for (i = 0; i < (port->num_def_qps); i++) {
2c69448b
JBT		 2561 struct ehea_port_res *pr = &port->port_res[i];
2562 struct ehea_qp *qp = pr->qp;
2563
2564 /* Purge send queue */
2565 ehea_purge_sq(qp);
2566
2567 /* Disable queue pair */
2568 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2569 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2570 cb0);
2571 if (hret != H_SUCCESS) {
8c4877a4 2572 pr_err("query_ehea_qp failed (1)\n");
2c69448b
JBT		 2573 goto out;
2574 }
2575
2576 cb0->qp_ctl_reg = (cb0->qp_ctl_reg & H_QP_CR_RES_STATE) << 8;
2577 cb0->qp_ctl_reg &= ~H_QP_CR_ENABLED;
2578
2579 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2580 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG,
2581 1), cb0, &dummy64,
2582 &dummy64, &dummy16, &dummy16);
2583 if (hret != H_SUCCESS) {
8c4877a4 2584 pr_err("modify_ehea_qp failed (1)\n");
2c69448b
JBT		 2585 goto out;
2586 }
2587
2588 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2589 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2590 cb0);
2591 if (hret != H_SUCCESS) {
8c4877a4 2592 pr_err("query_ehea_qp failed (2)\n");
2c69448b
JBT		 2593 goto out;
2594 }
2595
2596 /* deregister shared memory regions */
2597 dret = ehea_rem_smrs(pr);
2598 if (dret) {
8c4877a4 2599 pr_err("unreg shared memory region failed\n");
2c69448b
JBT		 2600 goto out;
2601 }
2602 }
2603
2604 ret = 0;
2605out:
3faf2693 2606 free_page((unsigned long)cb0);
2c69448b
JBT		 2607
2608 return ret;
2609}
2610
1886e5d2 2611static void ehea_update_rqs(struct ehea_qp *orig_qp, struct ehea_port_res *pr)
2c69448b
JBT		 2612{
2613 struct ehea_qp qp = *orig_qp;
2614 struct ehea_qp_init_attr *init_attr = &qp.init_attr;
2615 struct ehea_rwqe *rwqe;
2616 struct sk_buff **skba_rq2 = pr->rq2_skba.arr;
2617 struct sk_buff **skba_rq3 = pr->rq3_skba.arr;
2618 struct sk_buff *skb;
2619 u32 lkey = pr->recv_mr.lkey;
2620
2621
2622 int i;
2623 int index;
2624
2625 for (i = 0; i < init_attr->act_nr_rwqes_rq2 + 1; i++) {
2626 rwqe = ehea_get_next_rwqe(&qp, 2);
2627 rwqe->sg_list[0].l_key = lkey;
2628 index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, rwqe->wr_id);
2629 skb = skba_rq2[index];
2630 if (skb)
2631 rwqe->sg_list[0].vaddr = ehea_map_vaddr(skb->data);
2632 }
2633
2634 for (i = 0; i < init_attr->act_nr_rwqes_rq3 + 1; i++) {
2635 rwqe = ehea_get_next_rwqe(&qp, 3);
2636 rwqe->sg_list[0].l_key = lkey;
2637 index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, rwqe->wr_id);
2638 skb = skba_rq3[index];
2639 if (skb)
2640 rwqe->sg_list[0].vaddr = ehea_map_vaddr(skb->data);
2641 }
2642}
2643
1886e5d2 2644static int ehea_restart_qps(struct net_device *dev)
2c69448b
JBT		 2645{
2646 struct ehea_port *port = netdev_priv(dev);
2647 struct ehea_adapter *adapter = port->adapter;
2648 int ret = 0;
2649 int i;
2650
508d2b5d 2651 struct hcp_modify_qp_cb0 *cb0;
2c69448b
JBT		 2652 u64 hret;
2653 u64 dummy64 = 0;
2654 u16 dummy16 = 0;
2655
3faf2693 2656 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
2c69448b
JBT		 2657 if (!cb0) {
2658 ret = -ENOMEM;
2659 goto out;
2660 }
2661
723f28e4 2662 for (i = 0; i < (port->num_def_qps); i++) {
2c69448b
JBT		 2663 struct ehea_port_res *pr = &port->port_res[i];
2664 struct ehea_qp *qp = pr->qp;
2665
2666 ret = ehea_gen_smrs(pr);
2667 if (ret) {
8c4877a4 2668 netdev_err(dev, "creation of shared memory regions failed\n");
2c69448b
JBT		 2669 goto out;
2670 }
2671
2672 ehea_update_rqs(qp, pr);
2673
2674 /* Enable queue pair */
2675 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2676 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2677 cb0);
2678 if (hret != H_SUCCESS) {
8c4877a4 2679 netdev_err(dev, "query_ehea_qp failed (1)\n");
2c69448b
JBT		 2680 goto out;
2681 }
2682
2683 cb0->qp_ctl_reg = (cb0->qp_ctl_reg & H_QP_CR_RES_STATE) << 8;
2684 cb0->qp_ctl_reg |= H_QP_CR_ENABLED;
2685
2686 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2687 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG,
2688 1), cb0, &dummy64,
2689 &dummy64, &dummy16, &dummy16);
2690 if (hret != H_SUCCESS) {
8c4877a4 2691 netdev_err(dev, "modify_ehea_qp failed (1)\n");
2c69448b
JBT		 2692 goto out;
2693 }
2694
2695 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2696 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2697 cb0);
2698 if (hret != H_SUCCESS) {
8c4877a4 2699 netdev_err(dev, "query_ehea_qp failed (2)\n");
2c69448b
JBT		 2700 goto out;
2701 }
2702
2703 /* refill entire queue */
2704 ehea_refill_rq1(pr, pr->rq1_skba.index, 0);
2705 ehea_refill_rq2(pr, 0);
2706 ehea_refill_rq3(pr, 0);
2707 }
2708out:
3faf2693 2709 free_page((unsigned long)cb0);
2c69448b
JBT		 2710
2711 return ret;
2712}
2713
c4028958 2714static void ehea_reset_port(struct work_struct *work)
7a291083
JBT		 2715{
2716 int ret;
c4028958
DH		 2717 struct ehea_port *port =
2718 container_of(work, struct ehea_port, reset_task);
2719 struct net_device *dev = port->netdev;
7a291083 2720
099473c1 2721 mutex_lock(&dlpar_mem_lock);
7a291083 2722 port->resets++;
a5af6ad3 2723 mutex_lock(&port->port_lock);
b9564468 2724 netif_tx_disable(dev);
bea3348e
SH		 2725
2726 port_napi_disable(port);
7a291083 2727
44c82152 2728 ehea_down(dev);
7a291083
JBT		 2729
2730 ret = ehea_up(dev);
44c82152 2731 if (ret)
7a291083 2732 goto out;
7a291083 2733
2c69448b
JBT		 2734 ehea_set_multicast_list(dev);
2735
8c4877a4 2736 netif_info(port, timer, dev, "reset successful\n");
7a291083 2737
bea3348e
SH		 2738 port_napi_enable(port);
2739
b9564468 2740 netif_tx_wake_all_queues(dev);
7a291083 2741out:
a5af6ad3 2742 mutex_unlock(&port->port_lock);
099473c1 2743 mutex_unlock(&dlpar_mem_lock);
7a291083
JBT		 2744}
2745
3d6b892b 2746static void ehea_rereg_mrs(void)
44c82152
TK		 2747{
2748 int ret, i;
2749 struct ehea_adapter *adapter;
2750
8c4877a4 2751 pr_info("LPAR memory changed - re-initializing driver\n");
44c82152
TK		 2752
2753 list_for_each_entry(adapter, &adapter_list, list)
2754 if (adapter->active_ports) {
2755 /* Shutdown all ports */
2756 for (i = 0; i < EHEA_MAX_PORTS; i++) {
2757 struct ehea_port *port = adapter->port[i];
a5af6ad3 2758 struct net_device *dev;
44c82152 2759
a5af6ad3
DW		 2760 if (!port)
2761 continue;
44c82152 2762
a5af6ad3
DW		 2763 dev = port->netdev;
2764
2765 if (dev->flags & IFF_UP) {
2766 mutex_lock(&port->port_lock);
b9564468 2767 netif_tx_disable(dev);
df39e8ba 2768 ehea_flush_sq(port);
a5af6ad3
DW		 2769 ret = ehea_stop_qps(dev);
2770 if (ret) {
2771 mutex_unlock(&port->port_lock);
2772 goto out;
44c82152 2773 }
a5af6ad3
DW		 2774 port_napi_disable(port);
2775 mutex_unlock(&port->port_lock);
44c82152 2776 }
2928db4c 2777 reset_sq_restart_flag(port);
44c82152
TK		 2778 }
2779
2780 /* Unregister old memory region */
2781 ret = ehea_rem_mr(&adapter->mr);
2782 if (ret) {
8c4877a4 2783 pr_err("unregister MR failed - driver inoperable!\n");
44c82152
TK		 2784 goto out;
2785 }
2786 }
2787
44c82152
TK		 2788 clear_bit(__EHEA_STOP_XFER, &ehea_driver_flags);
2789
2790 list_for_each_entry(adapter, &adapter_list, list)
2791 if (adapter->active_ports) {
2792 /* Register new memory region */
2793 ret = ehea_reg_kernel_mr(adapter, &adapter->mr);
2794 if (ret) {
8c4877a4 2795 pr_err("register MR failed - driver inoperable!\n");
44c82152
TK		 2796 goto out;
2797 }
2798
2799 /* Restart all ports */
2800 for (i = 0; i < EHEA_MAX_PORTS; i++) {
2801 struct ehea_port *port = adapter->port[i];
2802
2803 if (port) {
2804 struct net_device *dev = port->netdev;
2805
2806 if (dev->flags & IFF_UP) {
a5af6ad3 2807 mutex_lock(&port->port_lock);
2c69448b 2808 ret = ehea_restart_qps(dev);
6f4d6dc1
BL		 2809 if (!ret) {
2810 check_sqs(port);
2811 port_napi_enable(port);
b9564468 2812 netif_tx_wake_all_queues(dev);
6f4d6dc1
BL		 2813 } else {
2814 netdev_err(dev, "Unable to restart QPS\n");
2815 }
a5af6ad3 2816 mutex_unlock(&port->port_lock);
44c82152
TK		 2817 }
2818 }
2819 }
2820 }
8c4877a4 2821 pr_info("re-initializing driver complete\n");
44c82152
TK		 2822out:
2823 return;
2824}
2825
7a291083
JBT		 2826static void ehea_tx_watchdog(struct net_device *dev)
2827{
2828 struct ehea_port *port = netdev_priv(dev);
2829
2c69448b
JBT		 2830 if (netif_carrier_ok(dev) &&
2831 !test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))
2f69ae01 2832 ehea_schedule_port_reset(port);
7a291083
JBT		 2833}
2834
1886e5d2 2835static int ehea_sense_adapter_attr(struct ehea_adapter *adapter)
7a291083
JBT		 2836{
2837 struct hcp_query_ehea *cb;
2838 u64 hret;
2839 int ret;
2840
3faf2693 2841 cb = (void *)get_zeroed_page(GFP_KERNEL);
7a291083
JBT		 2842 if (!cb) {
2843 ret = -ENOMEM;
2844 goto out;
2845 }
2846
2847 hret = ehea_h_query_ehea(adapter->handle, cb);
2848
2849 if (hret != H_SUCCESS) {
2850 ret = -EIO;
2851 goto out_herr;
2852 }
2853
7a291083
JBT		 2854 adapter->max_mc_mac = cb->max_mc_mac - 1;
2855 ret = 0;
2856
2857out_herr:
3faf2693 2858 free_page((unsigned long)cb);
7a291083
JBT		 2859out:
2860 return ret;
2861}
2862
1886e5d2 2863static int ehea_get_jumboframe_status(struct ehea_port *port, int *jumbo)
7a291083 2864{
7a291083 2865 struct hcp_ehea_port_cb4 *cb4;
1acf2318
JBT		 2866 u64 hret;
2867 int ret = 0;
7a291083 2868
1acf2318 2869 *jumbo = 0;
7a291083 2870
1acf2318 2871 /* (Try to) enable *jumbo frames */
3faf2693 2872 cb4 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083 2873 if (!cb4) {
8c4877a4 2874 pr_err("no mem for cb4\n");
1acf2318
JBT		 2875 ret = -ENOMEM;
2876 goto out;
7a291083 2877 } else {
1acf2318 2878 hret = ehea_h_query_ehea_port(port->adapter->handle,
9c750b7d
TK		 2879 port->logical_port_id,
2880 H_PORT_CB4,
2881 H_PORT_CB4_JUMBO, cb4);
9c750b7d
TK		 2882 if (hret == H_SUCCESS) {
2883 if (cb4->jumbo_frame)
1acf2318 2884 *jumbo = 1;
9c750b7d
TK		 2885 else {
2886 cb4->jumbo_frame = 1;
1acf2318
JBT		 2887 hret = ehea_h_modify_ehea_port(port->adapter->
2888 handle,
9c750b7d 2889 port->
1acf2318 2890 logical_port_id,
9c750b7d
TK		 2891 H_PORT_CB4,
2892 H_PORT_CB4_JUMBO,
2893 cb4);
2894 if (hret == H_SUCCESS)
1acf2318 2895 *jumbo = 1;
9c750b7d 2896 }
1acf2318
JBT		 2897 } else
2898 ret = -EINVAL;
2899
3faf2693 2900 free_page((unsigned long)cb4);
7a291083 2901 }
1acf2318
JBT		 2902out:
2903 return ret;
2904}
2905
2906static ssize_t ehea_show_port_id(struct device *dev,
2907 struct device_attribute *attr, char *buf)
2908{
2909 struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev);
a8e34fda 2910 return sprintf(buf, "%d", port->logical_port_id);
1acf2318
JBT		 2911}
2912
2913static DEVICE_ATTR(log_port_id, S_IRUSR | S_IRGRP | S_IROTH, ehea_show_port_id,
2914 NULL);
2915
0297be07 2916static void logical_port_release(struct device *dev)
1acf2318
JBT		 2917{
2918 struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev);
61c7a080 2919 of_node_put(port->ofdev.dev.of_node);
1acf2318
JBT		 2920}
2921
2922static struct device *ehea_register_port(struct ehea_port *port,
2923 struct device_node *dn)
2924{
2925 int ret;
2926
61c7a080 2927 port->ofdev.dev.of_node = of_node_get(dn);
6b08f3ae 2928 port->ofdev.dev.parent = &port->adapter->ofdev->dev;
d1dea38d 2929 port->ofdev.dev.bus = &ibmebus_bus_type;
1acf2318 2930
db1d7bf7 2931 dev_set_name(&port->ofdev.dev, "port%d", port_name_cnt++);
1acf2318
JBT		 2932 port->ofdev.dev.release = logical_port_release;
2933
2934 ret = of_device_register(&port->ofdev);
2935 if (ret) {
8c4877a4 2936 pr_err("failed to register device. ret=%d\n", ret);
1acf2318
JBT		 2937 goto out;
2938 }
2939
2940 ret = device_create_file(&port->ofdev.dev, &dev_attr_log_port_id);
d1d25aab 2941 if (ret) {
8c4877a4 2942 pr_err("failed to register attributes, ret=%d\n", ret);
1acf2318
JBT		 2943 goto out_unreg_of_dev;
2944 }
e542aa6b 2945
1acf2318
JBT		 2946 return &port->ofdev.dev;
2947
2948out_unreg_of_dev:
2949 of_device_unregister(&port->ofdev);
2950out:
2951 return NULL;
2952}
2953
2954static void ehea_unregister_port(struct ehea_port *port)
2955{
2956 device_remove_file(&port->ofdev.dev, &dev_attr_log_port_id);
2957 of_device_unregister(&port->ofdev);
2958}
2959
086c1b2c
TK		 2960static const struct net_device_ops ehea_netdev_ops = {
2961 .ndo_open = ehea_open,
2962 .ndo_stop = ehea_stop,
2963 .ndo_start_xmit = ehea_start_xmit,
2964#ifdef CONFIG_NET_POLL_CONTROLLER
2965 .ndo_poll_controller = ehea_netpoll,
2966#endif
239c562c 2967 .ndo_get_stats64 = ehea_get_stats64,
086c1b2c 2968 .ndo_set_mac_address = ehea_set_mac_addr,
240c102d 2969 .ndo_validate_addr = eth_validate_addr,
afc4b13d 2970 .ndo_set_rx_mode = ehea_set_multicast_list,
086c1b2c 2971 .ndo_change_mtu = ehea_change_mtu,
086c1b2c 2972 .ndo_vlan_rx_add_vid = ehea_vlan_rx_add_vid,
32e8f9a8
AB		 2973 .ndo_vlan_rx_kill_vid = ehea_vlan_rx_kill_vid,
2974 .ndo_tx_timeout = ehea_tx_watchdog,
086c1b2c
TK		 2975};
2976
1886e5d2 2977static struct ehea_port *ehea_setup_single_port(struct ehea_adapter *adapter,
1acf2318
JBT		 2978 u32 logical_port_id,
2979 struct device_node *dn)
2980{
2981 int ret;
2982 struct net_device *dev;
2983 struct ehea_port *port;
2984 struct device *port_dev;
2985 int jumbo;
2986
2987 /* allocate memory for the port structures */
b9564468 2988 dev = alloc_etherdev_mq(sizeof(struct ehea_port), EHEA_MAX_PORT_RES);
1acf2318
JBT		 2989
2990 if (!dev) {
1acf2318
JBT		 2991 ret = -ENOMEM;
2992 goto out_err;
2993 }
2994
2995 port = netdev_priv(dev);
2996
a5af6ad3 2997 mutex_init(&port->port_lock);
1acf2318
JBT		 2998 port->state = EHEA_PORT_DOWN;
2999 port->sig_comp_iv = sq_entries / 10;
3000
3001 port->adapter = adapter;
3002 port->netdev = dev;
3003 port->logical_port_id = logical_port_id;
3004
3005 port->msg_enable = netif_msg_init(msg_level, EHEA_MSG_DEFAULT);
3006
3007 port->mc_list = kzalloc(sizeof(struct ehea_mc_list), GFP_KERNEL);
3008 if (!port->mc_list) {
3009 ret = -ENOMEM;
3010 goto out_free_ethdev;
3011 }
3012
3013 INIT_LIST_HEAD(&port->mc_list->list);
3014
3015 ret = ehea_sense_port_attr(port);
3016 if (ret)
3017 goto out_free_mc_list;
3018
b9564468 3019 netif_set_real_num_rx_queues(dev, port->num_def_qps);
723f28e4 3020 netif_set_real_num_tx_queues(dev, port->num_def_qps);
b9564468 3021
1acf2318
JBT		 3022 port_dev = ehea_register_port(port, dn);
3023 if (!port_dev)
3024 goto out_free_mc_list;
3025
3026 SET_NETDEV_DEV(dev, port_dev);
7a291083
JBT		 3027
3028 /* initialize net_device structure */
7a291083
JBT		 3029 memcpy(dev->dev_addr, &port->mac_addr, ETH_ALEN);
3030
086c1b2c
TK		 3031 dev->netdev_ops = &ehea_netdev_ops;
3032 ehea_set_ethtool_ops(dev);
3033
55fbbe46
DM		 3034 dev->hw_features = NETIF_F_SG | NETIF_F_TSO |
3035 NETIF_F_IP_CSUM | NETIF_F_HW_VLAN_CTAG_TX;
28e24c62 3036 dev->features = NETIF_F_SG | NETIF_F_TSO |
55fbbe46
DM		 3037 NETIF_F_HIGHDMA | NETIF_F_IP_CSUM |
3038 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX |
3039 NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_RXCSUM;
076f2032
AB		 3040 dev->vlan_features = NETIF_F_SG | NETIF_F_TSO | NETIF_F_HIGHDMA |
3041 NETIF_F_IP_CSUM;
7a291083
JBT		 3042 dev->watchdog_timeo = EHEA_WATCH_DOG_TIMEOUT;
3043
c4028958 3044 INIT_WORK(&port->reset_task, ehea_reset_port);
2aefcad8 3045 INIT_DELAYED_WORK(&port->stats_work, ehea_update_stats);
7a291083 3046
21ccc793
AB		 3047 init_waitqueue_head(&port->swqe_avail_wq);
3048 init_waitqueue_head(&port->restart_wq);
3049
2aefcad8 3050 memset(&port->stats, 0, sizeof(struct net_device_stats));
7a291083
JBT		 3051 ret = register_netdev(dev);
3052 if (ret) {
8c4877a4 3053 pr_err("register_netdev failed. ret=%d\n", ret);
21eee2dd 3054 goto out_unreg_port;
7a291083
JBT		 3055 }
3056
1acf2318 3057 ret = ehea_get_jumboframe_status(port, &jumbo);
e542aa6b 3058 if (ret)
8c4877a4 3059 netdev_err(dev, "failed determining jumbo frame status\n");
1acf2318 3060
8c4877a4
JP		 3061 netdev_info(dev, "Jumbo frames are %sabled\n",
3062 jumbo == 1 ? "en" : "dis");
9c750b7d 3063
44c82152
TK		 3064 adapter->active_ports++;
3065
1acf2318 3066 return port;
7a291083 3067
1acf2318
JBT		 3068out_unreg_port:
3069 ehea_unregister_port(port);
3070
3071out_free_mc_list:
7a291083 3072 kfree(port->mc_list);
1acf2318
JBT		 3073
3074out_free_ethdev:
3075 free_netdev(dev);
3076
3077out_err:
8c4877a4
JP		 3078 pr_err("setting up logical port with id=%d failed, ret=%d\n",
3079 logical_port_id, ret);
1acf2318
JBT		 3080 return NULL;
3081}
3082
3083static void ehea_shutdown_single_port(struct ehea_port *port)
3084{
7fb1c2ac 3085 struct ehea_adapter *adapter = port->adapter;
f5c35cc1
TH		 3086
3087 cancel_work_sync(&port->reset_task);
2aefcad8 3088 cancel_delayed_work_sync(&port->stats_work);
1acf2318
JBT		 3089 unregister_netdev(port->netdev);
3090 ehea_unregister_port(port);
3091 kfree(port->mc_list);
3092 free_netdev(port->netdev);
7fb1c2ac 3093 adapter->active_ports--;
7a291083
JBT		 3094}
3095
3096static int ehea_setup_ports(struct ehea_adapter *adapter)
3097{
1acf2318
JBT		 3098 struct device_node *lhea_dn;
3099 struct device_node *eth_dn = NULL;
d1d25aab 3100
9f9a3b8a 3101 const u32 *dn_log_port_id;
1acf2318
JBT		 3102 int i = 0;
3103
61c7a080 3104 lhea_dn = adapter->ofdev->dev.of_node;
1eef4e04 3105 while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) {
e542aa6b 3106
40cd3a45 3107 dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no",
d1d25aab 3108 NULL);
1acf2318 3109 if (!dn_log_port_id) {
8c4877a4
JP		 3110 pr_err("bad device node: eth_dn name=%s\n",
3111 eth_dn->full_name);
1acf2318
JBT		 3112 continue;
3113 }
7a291083 3114
1211bb6d 3115 if (ehea_add_adapter_mr(adapter)) {
8c4877a4 3116 pr_err("creating MR failed\n");
1211bb6d
TK		 3117 of_node_put(eth_dn);
3118 return -EIO;
3119 }
3120
1acf2318
JBT		 3121 adapter->port[i] = ehea_setup_single_port(adapter,
3122 *dn_log_port_id,
3123 eth_dn);
7a291083 3124 if (adapter->port[i])
8c4877a4
JP		 3125 netdev_info(adapter->port[i]->netdev,
3126 "logical port id #%d\n", *dn_log_port_id);
1211bb6d
TK		 3127 else
3128 ehea_remove_adapter_mr(adapter);
3129
1acf2318 3130 i++;
ee289b64 3131 }
1211bb6d 3132 return 0;
1acf2318
JBT		 3133}
3134
e542aa6b
JBT		 3135static struct device_node *ehea_get_eth_dn(struct ehea_adapter *adapter,
3136 u32 logical_port_id)
1acf2318
JBT		 3137{
3138 struct device_node *lhea_dn;
3139 struct device_node *eth_dn = NULL;
9f9a3b8a 3140 const u32 *dn_log_port_id;
1acf2318 3141
61c7a080 3142 lhea_dn = adapter->ofdev->dev.of_node;
1eef4e04 3143 while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) {
e542aa6b 3144
40cd3a45 3145 dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no",
d1d25aab 3146 NULL);
1acf2318
JBT		 3147 if (dn_log_port_id)
3148 if (*dn_log_port_id == logical_port_id)
3149 return eth_dn;
ee289b64 3150 }
1acf2318
JBT		 3151
3152 return NULL;
3153}
3154
3155static ssize_t ehea_probe_port(struct device *dev,
3156 struct device_attribute *attr,
3157 const char *buf, size_t count)
3158{
c7ae011d 3159 struct ehea_adapter *adapter = dev_get_drvdata(dev);
1acf2318
JBT		 3160 struct ehea_port *port;
3161 struct device_node *eth_dn = NULL;
3162 int i;
3163
3164 u32 logical_port_id;
3165
a8e34fda 3166 sscanf(buf, "%d", &logical_port_id);
1acf2318
JBT		 3167
3168 port = ehea_get_port(adapter, logical_port_id);
3169
3170 if (port) {
8c4877a4
JP		 3171 netdev_info(port->netdev, "adding port with logical port id=%d failed: port already configured\n",
3172 logical_port_id);
1acf2318 3173 return -EINVAL;
7a291083 3174 }
e542aa6b 3175
1acf2318 3176 eth_dn = ehea_get_eth_dn(adapter, logical_port_id);
7a291083 3177
1acf2318 3178 if (!eth_dn) {
8c4877a4 3179 pr_info("no logical port with id %d found\n", logical_port_id);
1acf2318
JBT		 3180 return -EINVAL;
3181 }
e542aa6b 3182
1211bb6d 3183 if (ehea_add_adapter_mr(adapter)) {
8c4877a4 3184 pr_err("creating MR failed\n");
1211bb6d
TK		 3185 return -EIO;
3186 }
3187
1acf2318 3188 port = ehea_setup_single_port(adapter, logical_port_id, eth_dn);
7a291083 3189
1eef4e04
JBT		 3190 of_node_put(eth_dn);
3191
1acf2318 3192 if (port) {
508d2b5d 3193 for (i = 0; i < EHEA_MAX_PORTS; i++)
1acf2318
JBT		 3194 if (!adapter->port[i]) {
3195 adapter->port[i] = port;
3196 break;
3197 }
7a291083 3198
8c4877a4
JP		 3199 netdev_info(port->netdev, "added: (logical port id=%d)\n",
3200 logical_port_id);
1211bb6d
TK		 3201 } else {
3202 ehea_remove_adapter_mr(adapter);
e542aa6b 3203 return -EIO;
1211bb6d 3204 }
7a291083 3205
1acf2318
JBT		 3206 return (ssize_t) count;
3207}
3208
3209static ssize_t ehea_remove_port(struct device *dev,
3210 struct device_attribute *attr,
3211 const char *buf, size_t count)
3212{
c7ae011d 3213 struct ehea_adapter *adapter = dev_get_drvdata(dev);
1acf2318
JBT		 3214 struct ehea_port *port;
3215 int i;
3216 u32 logical_port_id;
3217
a8e34fda 3218 sscanf(buf, "%d", &logical_port_id);
1acf2318
JBT		 3219
3220 port = ehea_get_port(adapter, logical_port_id);
3221
3222 if (port) {
8c4877a4
JP		 3223 netdev_info(port->netdev, "removed: (logical port id=%d)\n",
3224 logical_port_id);
1acf2318
JBT		 3225
3226 ehea_shutdown_single_port(port);
3227
508d2b5d 3228 for (i = 0; i < EHEA_MAX_PORTS; i++)
1acf2318
JBT		 3229 if (adapter->port[i] == port) {
3230 adapter->port[i] = NULL;
3231 break;
3232 }
3233 } else {
8c4877a4
JP		 3234 pr_err("removing port with logical port id=%d failed. port not configured.\n",
3235 logical_port_id);
1acf2318
JBT		 3236 return -EINVAL;
3237 }
3238
1211bb6d
TK		 3239 ehea_remove_adapter_mr(adapter);
3240
1acf2318
JBT		 3241 return (ssize_t) count;
3242}
3243
3244static DEVICE_ATTR(probe_port, S_IWUSR, NULL, ehea_probe_port);
3245static DEVICE_ATTR(remove_port, S_IWUSR, NULL, ehea_remove_port);
3246
1886e5d2 3247static int ehea_create_device_sysfs(struct platform_device *dev)
1acf2318 3248{
6b08f3ae 3249 int ret = device_create_file(&dev->dev, &dev_attr_probe_port);
1acf2318
JBT		 3250 if (ret)
3251 goto out;
3252
6b08f3ae 3253 ret = device_create_file(&dev->dev, &dev_attr_remove_port);
1acf2318 3254out:
7a291083
JBT		 3255 return ret;
3256}
3257
1886e5d2 3258static void ehea_remove_device_sysfs(struct platform_device *dev)
1acf2318 3259{
6b08f3ae
JF		 3260 device_remove_file(&dev->dev, &dev_attr_probe_port);
3261 device_remove_file(&dev->dev, &dev_attr_remove_port);
1acf2318
JBT		 3262}
3263
c45640e4 3264static int ehea_probe_adapter(struct platform_device *dev)
7a291083
JBT		 3265{
3266 struct ehea_adapter *adapter;
9f9a3b8a 3267 const u64 *adapter_handle;
7a291083 3268 int ret;
c2f1244b 3269 int i;
7a291083 3270
61c7a080 3271 if (!dev || !dev->dev.of_node) {
8c4877a4 3272 pr_err("Invalid ibmebus device probed\n");
1eef4e04
JBT		 3273 return -EINVAL;
3274 }
3275
7a291083
JBT		 3276 adapter = kzalloc(sizeof(*adapter), GFP_KERNEL);
3277 if (!adapter) {
3278 ret = -ENOMEM;
6b08f3ae 3279 dev_err(&dev->dev, "no mem for ehea_adapter\n");
7a291083
JBT		 3280 goto out;
3281 }
3282
44c82152
TK		 3283 list_add(&adapter->list, &adapter_list);
3284
6b08f3ae 3285 adapter->ofdev = dev;
1acf2318 3286
61c7a080 3287 adapter_handle = of_get_property(dev->dev.of_node, "ibm,hea-handle",
d1d25aab 3288 NULL);
061bf3cd
TK		 3289 if (adapter_handle)
3290 adapter->handle = *adapter_handle;
3291
3292 if (!adapter->handle) {
6b08f3ae 3293 dev_err(&dev->dev, "failed getting handle for adapter"
61c7a080 3294 " '%s'\n", dev->dev.of_node->full_name);
7a291083
JBT		 3295 ret = -ENODEV;
3296 goto out_free_ad;
3297 }
3298
7a291083
JBT		 3299 adapter->pd = EHEA_PD_ID;
3300
8513fbd8 3301 platform_set_drvdata(dev, adapter);
7a291083 3302
7a291083
JBT		 3303
3304 /* initialize adapter and ports */
3305 /* get adapter properties */
3306 ret = ehea_sense_adapter_attr(adapter);
3307 if (ret) {
898eb71c 3308 dev_err(&dev->dev, "sense_adapter_attr failed: %d\n", ret);
1211bb6d 3309 goto out_free_ad;
7a291083 3310 }
7a291083
JBT		 3311
3312 adapter->neq = ehea_create_eq(adapter,
3313 EHEA_NEQ, EHEA_MAX_ENTRIES_EQ, 1);
3314 if (!adapter->neq) {
1eef4e04 3315 ret = -EIO;
898eb71c 3316 dev_err(&dev->dev, "NEQ creation failed\n");
1211bb6d 3317 goto out_free_ad;
7a291083
JBT		 3318 }
3319
3320 tasklet_init(&adapter->neq_tasklet, ehea_neq_tasklet,
3321 (unsigned long)adapter);
3322
1eef4e04
JBT		 3323 ret = ehea_create_device_sysfs(dev);
3324 if (ret)
c2f1244b 3325 goto out_kill_eq;
1acf2318 3326
7a291083
JBT		 3327 ret = ehea_setup_ports(adapter);
3328 if (ret) {
898eb71c 3329 dev_err(&dev->dev, "setup_ports failed\n");
1acf2318 3330 goto out_rem_dev_sysfs;
7a291083
JBT		 3331 }
3332
c2f1244b 3333 ret = ibmebus_request_irq(adapter->neq->attr.ist1,
46c915f8 3334 ehea_interrupt_neq, 0,
c2f1244b
TLSC		 3335 "ehea_neq", adapter);
3336 if (ret) {
3337 dev_err(&dev->dev, "requesting NEQ IRQ failed\n");
3338 goto out_shutdown_ports;
3339 }
3340
380ec964
TLSC		 3341 /* Handle any events that might be pending. */
3342 tasklet_hi_schedule(&adapter->neq_tasklet);
c2f1244b 3343
7a291083
JBT		 3344 ret = 0;
3345 goto out;
3346
c2f1244b
TLSC		 3347out_shutdown_ports:
3348 for (i = 0; i < EHEA_MAX_PORTS; i++)
3349 if (adapter->port[i]) {
3350 ehea_shutdown_single_port(adapter->port[i]);
3351 adapter->port[i] = NULL;
3352 }
3353
1acf2318
JBT		 3354out_rem_dev_sysfs:
3355 ehea_remove_device_sysfs(dev);
3356
7a291083
JBT		 3357out_kill_eq:
3358 ehea_destroy_eq(adapter->neq);
3359
7a291083 3360out_free_ad:
51621fbd 3361 list_del(&adapter->list);
7a291083 3362 kfree(adapter);
21eee2dd 3363
7a291083 3364out:
21eee2dd 3365 ehea_update_firmware_handles();
52e21b1b 3366
7a291083
JBT		 3367 return ret;
3368}
3369
0297be07 3370static int ehea_remove(struct platform_device *dev)
7a291083 3371{
8513fbd8 3372 struct ehea_adapter *adapter = platform_get_drvdata(dev);
7a291083
JBT		 3373 int i;
3374
1acf2318 3375 for (i = 0; i < EHEA_MAX_PORTS; i++)
7a291083
JBT		 3376 if (adapter->port[i]) {
3377 ehea_shutdown_single_port(adapter->port[i]);
3378 adapter->port[i] = NULL;
3379 }
1acf2318
JBT		 3380
3381 ehea_remove_device_sysfs(dev);
3382
6b08f3ae 3383 ibmebus_free_irq(adapter->neq->attr.ist1, adapter);
d4150a27 3384 tasklet_kill(&adapter->neq_tasklet);
7a291083
JBT		 3385
3386 ehea_destroy_eq(adapter->neq);
1211bb6d 3387 ehea_remove_adapter_mr(adapter);
44c82152 3388 list_del(&adapter->list);
7a291083 3389 kfree(adapter);
44c82152 3390
21eee2dd 3391 ehea_update_firmware_handles();
21eee2dd 3392
7a291083
JBT		 3393 return 0;
3394}
3395
1886e5d2 3396static void ehea_crash_handler(void)
21eee2dd
TK		 3397{
3398 int i;
3399
3400 if (ehea_fw_handles.arr)
3401 for (i = 0; i < ehea_fw_handles.num_entries; i++)
3402 ehea_h_free_resource(ehea_fw_handles.arr[i].adh,
3403 ehea_fw_handles.arr[i].fwh,
3404 FORCE_FREE);
3405
3406 if (ehea_bcmc_regs.arr)
3407 for (i = 0; i < ehea_bcmc_regs.num_entries; i++)
3408 ehea_h_reg_dereg_bcmc(ehea_bcmc_regs.arr[i].adh,
3409 ehea_bcmc_regs.arr[i].port_id,
3410 ehea_bcmc_regs.arr[i].reg_type,
3411 ehea_bcmc_regs.arr[i].macaddr,
3412 0, H_DEREG_BCMC);
3413}
3414
48cfb14f
HH		 3415static int ehea_mem_notifier(struct notifier_block *nb,
3416 unsigned long action, void *data)
3417{
a7c561f2 3418 int ret = NOTIFY_BAD;
d4f12daf 3419 struct memory_notify *arg = data;
a7c561f2 3420
099473c1 3421 mutex_lock(&dlpar_mem_lock);
a7c561f2 3422
48cfb14f 3423 switch (action) {
d4f12daf 3424 case MEM_CANCEL_OFFLINE:
8c4877a4 3425 pr_info("memory offlining canceled");
d4f12daf
HH		 3426 /* Readd canceled memory block */
3427 case MEM_ONLINE:
8c4877a4 3428 pr_info("memory is going online");
3876732c 3429 set_bit(__EHEA_STOP_XFER, &ehea_driver_flags);
d4f12daf 3430 if (ehea_add_sect_bmap(arg->start_pfn, arg->nr_pages))
a7c561f2 3431 goto out_unlock;
3d6b892b 3432 ehea_rereg_mrs();
d4f12daf
HH		 3433 break;
3434 case MEM_GOING_OFFLINE:
8c4877a4 3435 pr_info("memory is going offline");
3876732c 3436 set_bit(__EHEA_STOP_XFER, &ehea_driver_flags);
d4f12daf 3437 if (ehea_rem_sect_bmap(arg->start_pfn, arg->nr_pages))
a7c561f2 3438 goto out_unlock;
3d6b892b 3439 ehea_rereg_mrs();
48cfb14f
HH		 3440 break;
3441 default:
3442 break;
3443 }
52e21b1b
JBT		 3444
3445 ehea_update_firmware_handles();
a7c561f2 3446 ret = NOTIFY_OK;
52e21b1b 3447
a7c561f2
TK		 3448out_unlock:
3449 mutex_unlock(&dlpar_mem_lock);
a7c561f2 3450 return ret;
48cfb14f
HH		 3451}
3452
3453static struct notifier_block ehea_mem_nb = {
3454 .notifier_call = ehea_mem_notifier,
3455};
3456
2a6f4e49
JBT		 3457static int ehea_reboot_notifier(struct notifier_block *nb,
3458 unsigned long action, void *unused)
3459{
3460 if (action == SYS_RESTART) {
8c4877a4 3461 pr_info("Reboot: freeing all eHEA resources\n");
2a6f4e49
JBT		 3462 ibmebus_unregister_driver(&ehea_driver);
3463 }
3464 return NOTIFY_DONE;
3465}
3466
3467static struct notifier_block ehea_reboot_nb = {
508d2b5d 3468 .notifier_call = ehea_reboot_notifier,
2a6f4e49
JBT		 3469};
3470
7a291083
JBT		 3471static int check_module_parm(void)
3472{
3473 int ret = 0;
3474
3475 if ((rq1_entries < EHEA_MIN_ENTRIES_QP) ||
3476 (rq1_entries > EHEA_MAX_ENTRIES_RQ1)) {
8c4877a4 3477 pr_info("Bad parameter: rq1_entries\n");
7a291083
JBT		 3478 ret = -EINVAL;
3479 }
3480 if ((rq2_entries < EHEA_MIN_ENTRIES_QP) ||
3481 (rq2_entries > EHEA_MAX_ENTRIES_RQ2)) {
8c4877a4 3482 pr_info("Bad parameter: rq2_entries\n");
7a291083
JBT		 3483 ret = -EINVAL;
3484 }
3485 if ((rq3_entries < EHEA_MIN_ENTRIES_QP) ||
3486 (rq3_entries > EHEA_MAX_ENTRIES_RQ3)) {
8c4877a4 3487 pr_info("Bad parameter: rq3_entries\n");
7a291083
JBT		 3488 ret = -EINVAL;
3489 }
3490 if ((sq_entries < EHEA_MIN_ENTRIES_QP) ||
3491 (sq_entries > EHEA_MAX_ENTRIES_SQ)) {
8c4877a4 3492 pr_info("Bad parameter: sq_entries\n");
7a291083
JBT		 3493 ret = -EINVAL;
3494 }
3495
3496 return ret;
3497}
3498
4c3ca4da
JBT		 3499static ssize_t ehea_show_capabilities(struct device_driver *drv,
3500 char *buf)
3501{
3502 return sprintf(buf, "%d", EHEA_CAPABILITIES);
3503}
3504
3505static DRIVER_ATTR(capabilities, S_IRUSR | S_IRGRP | S_IROTH,
3506 ehea_show_capabilities, NULL);
3507
1886e5d2 3508static int __init ehea_module_init(void)
7a291083
JBT		 3509{
3510 int ret;
3511
8c4877a4 3512 pr_info("IBM eHEA ethernet device driver (Release %s)\n", DRV_VERSION);
7a291083 3513
21eee2dd
TK		 3514 memset(&ehea_fw_handles, 0, sizeof(ehea_fw_handles));
3515 memset(&ehea_bcmc_regs, 0, sizeof(ehea_bcmc_regs));
3516
9f71a568 3517 mutex_init(&ehea_fw_handles.lock);
5c2cec14 3518 spin_lock_init(&ehea_bcmc_regs.lock);
44c82152 3519
7a291083
JBT		 3520 ret = check_module_parm();
3521 if (ret)
3522 goto out;
44c82152
TK		 3523
3524 ret = ehea_create_busmap();
3525 if (ret)
3526 goto out;
3527
21eee2dd
TK		 3528 ret = register_reboot_notifier(&ehea_reboot_nb);
3529 if (ret)
8c4877a4 3530 pr_info("failed registering reboot notifier\n");
21eee2dd 3531
48cfb14f
HH		 3532 ret = register_memory_notifier(&ehea_mem_nb);
3533 if (ret)
8c4877a4 3534 pr_info("failed registering memory remove notifier\n");
48cfb14f 3535
c061b18d 3536 ret = crash_shutdown_register(ehea_crash_handler);
21eee2dd 3537 if (ret)
8c4877a4 3538 pr_info("failed registering crash handler\n");
2a6f4e49 3539
7a291083 3540 ret = ibmebus_register_driver(&ehea_driver);
4c3ca4da 3541 if (ret) {
8c4877a4 3542 pr_err("failed registering eHEA device driver on ebus\n");
21eee2dd 3543 goto out2;
4c3ca4da
JBT		 3544 }
3545
3546 ret = driver_create_file(&ehea_driver.driver,
3547 &driver_attr_capabilities);
3548 if (ret) {
8c4877a4
JP		 3549 pr_err("failed to register capabilities attribute, ret=%d\n",
3550 ret);
21eee2dd 3551 goto out3;
4c3ca4da 3552 }
7a291083 3553
21eee2dd
TK		 3554 return ret;
3555
3556out3:
3557 ibmebus_unregister_driver(&ehea_driver);
3558out2:
48cfb14f 3559 unregister_memory_notifier(&ehea_mem_nb);
21eee2dd 3560 unregister_reboot_notifier(&ehea_reboot_nb);
c061b18d 3561 crash_shutdown_unregister(ehea_crash_handler);
7a291083
JBT		 3562out:
3563 return ret;
3564}
3565
3566static void __exit ehea_module_exit(void)
3567{
21eee2dd
TK		 3568 int ret;
3569
4c3ca4da 3570 driver_remove_file(&ehea_driver.driver, &driver_attr_capabilities);
7a291083 3571 ibmebus_unregister_driver(&ehea_driver);
2a6f4e49 3572 unregister_reboot_notifier(&ehea_reboot_nb);
c061b18d 3573 ret = crash_shutdown_unregister(ehea_crash_handler);
21eee2dd 3574 if (ret)
8c4877a4 3575 pr_info("failed unregistering crash handler\n");
48cfb14f 3576 unregister_memory_notifier(&ehea_mem_nb);
21eee2dd
TK		 3577 kfree(ehea_fw_handles.arr);
3578 kfree(ehea_bcmc_regs.arr);
44c82152 3579 ehea_destroy_busmap();
7a291083
JBT		 3580}
3581
3582module_init(ehea_module_init);
3583module_exit(ehea_module_exit);
Linux 6.x block layer and io_uring tree(s)