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ehea: Update multiqueue support
[deliverable/linux.git] / drivers / net / ethernet / ibm / ehea / ehea_main.c
CommitLineData
7a291083
JBT		 1/*
2 * linux/drivers/net/ehea/ehea_main.c
3 *
4 * eHEA ethernet device driver for IBM eServer System p
5 *
6 * (C) Copyright IBM Corp. 2006
7 *
8 * Authors:
508d2b5d
DM		 9 * Christoph Raisch <raisch@de.ibm.com>
10 * Jan-Bernd Themann <themann@de.ibm.com>
11 * Thomas Klein <tklein@de.ibm.com>
7a291083
JBT		 12 *
13 *
14 * This program is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License as published by
16 * the Free Software Foundation; either version 2, or (at your option)
17 * any later version.
18 *
19 * This program is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU General Public License for more details.
23 *
24 * You should have received a copy of the GNU General Public License
25 * along with this program; if not, write to the Free Software
26 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
27 */
28
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 use_lro;
d4dc4ec9 66static int lro_max_aggr = EHEA_LRO_MAX_AGGR;
18604c54 67static int num_tx_qps = EHEA_NUM_TX_QP;
508d2b5d 68static int prop_carrier_state;
7a291083
JBT		 69
70module_param(msg_level, int, 0);
71module_param(rq1_entries, int, 0);
72module_param(rq2_entries, int, 0);
73module_param(rq3_entries, int, 0);
74module_param(sq_entries, int, 0);
8759cf76 75module_param(prop_carrier_state, int, 0);
18604c54 76module_param(use_mcs, int, 0);
d4dc4ec9
JBT		 77module_param(use_lro, int, 0);
78module_param(lro_max_aggr, int, 0);
18604c54 79module_param(num_tx_qps, int, 0);
7a291083 80
18604c54 81MODULE_PARM_DESC(num_tx_qps, "Number of TX-QPS");
7a291083 82MODULE_PARM_DESC(msg_level, "msg_level");
8759cf76
JBT		 83MODULE_PARM_DESC(prop_carrier_state, "Propagate carrier state of physical "
84 "port to stack. 1:yes, 0:no. Default = 0 ");
7a291083
JBT		 85MODULE_PARM_DESC(rq3_entries, "Number of entries for Receive Queue 3 "
86 "[2^x - 1], x = [6..14]. Default = "
87 __MODULE_STRING(EHEA_DEF_ENTRIES_RQ3) ")");
88MODULE_PARM_DESC(rq2_entries, "Number of entries for Receive Queue 2 "
89 "[2^x - 1], x = [6..14]. Default = "
90 __MODULE_STRING(EHEA_DEF_ENTRIES_RQ2) ")");
91MODULE_PARM_DESC(rq1_entries, "Number of entries for Receive Queue 1 "
92 "[2^x - 1], x = [6..14]. Default = "
93 __MODULE_STRING(EHEA_DEF_ENTRIES_RQ1) ")");
94MODULE_PARM_DESC(sq_entries, " Number of entries for the Send Queue "
95 "[2^x - 1], x = [6..14]. Default = "
96 __MODULE_STRING(EHEA_DEF_ENTRIES_SQ) ")");
b9564468
AB		 97MODULE_PARM_DESC(use_mcs, " Multiple receive queues, 1: enable, 0: disable, "
98 "Default = 1");
7a291083 99
d4dc4ec9
JBT		 100MODULE_PARM_DESC(lro_max_aggr, " LRO: Max packets to be aggregated. Default = "
101 __MODULE_STRING(EHEA_LRO_MAX_AGGR));
102MODULE_PARM_DESC(use_lro, " Large Receive Offload, 1: enable, 0: disable, "
103 "Default = 0");
104
508d2b5d 105static int port_name_cnt;
44c82152 106static LIST_HEAD(adapter_list);
48e4cc77 107static unsigned long ehea_driver_flags;
06f89edf 108static DEFINE_MUTEX(dlpar_mem_lock);
21eee2dd
TK		 109struct ehea_fw_handle_array ehea_fw_handles;
110struct ehea_bcmc_reg_array ehea_bcmc_regs;
111
d1dea38d 112
2dc11581 113static int __devinit ehea_probe_adapter(struct platform_device *dev,
d1d25aab 114 const struct of_device_id *id);
d1dea38d 115
2dc11581 116static int __devexit ehea_remove(struct platform_device *dev);
d1dea38d
TK		 117
118static struct of_device_id ehea_device_table[] = {
119 {
120 .name = "lhea",
121 .compatible = "IBM,lhea",
122 },
123 {},
124};
b0afffe8 125MODULE_DEVICE_TABLE(of, ehea_device_table);
d1dea38d 126
6b08f3ae 127static struct of_platform_driver ehea_driver = {
4018294b
GL		 128 .driver = {
129 .name = "ehea",
130 .owner = THIS_MODULE,
131 .of_match_table = ehea_device_table,
132 },
d1dea38d
TK		 133 .probe = ehea_probe_adapter,
134 .remove = ehea_remove,
135};
136
508d2b5d
DM		 137void ehea_dump(void *adr, int len, char *msg)
138{
7a291083
JBT		 139 int x;
140 unsigned char *deb = adr;
141 for (x = 0; x < len; x += 16) {
8c4877a4
JP		 142 pr_info("%s adr=%p ofs=%04x %016llx %016llx\n",
143 msg, deb, x, *((u64 *)&deb[0]), *((u64 *)&deb[8]));
7a291083
JBT		 144 deb += 16;
145 }
146}
147
2f69ae01
JBT		 148void ehea_schedule_port_reset(struct ehea_port *port)
149{
150 if (!test_bit(__EHEA_DISABLE_PORT_RESET, &port->flags))
151 schedule_work(&port->reset_task);
152}
153
21eee2dd
TK		 154static void ehea_update_firmware_handles(void)
155{
156 struct ehea_fw_handle_entry *arr = NULL;
157 struct ehea_adapter *adapter;
158 int num_adapters = 0;
159 int num_ports = 0;
160 int num_portres = 0;
161 int i = 0;
162 int num_fw_handles, k, l;
163
164 /* Determine number of handles */
52e21b1b
JBT		 165 mutex_lock(&ehea_fw_handles.lock);
166
21eee2dd
TK		 167 list_for_each_entry(adapter, &adapter_list, list) {
168 num_adapters++;
169
170 for (k = 0; k < EHEA_MAX_PORTS; k++) {
171 struct ehea_port *port = adapter->port[k];
172
173 if (!port || (port->state != EHEA_PORT_UP))
174 continue;
175
176 num_ports++;
177 num_portres += port->num_def_qps + port->num_add_tx_qps;
178 }
179 }
180
181 num_fw_handles = num_adapters * EHEA_NUM_ADAPTER_FW_HANDLES +
182 num_ports * EHEA_NUM_PORT_FW_HANDLES +
183 num_portres * EHEA_NUM_PORTRES_FW_HANDLES;
184
185 if (num_fw_handles) {
baeb2ffa 186 arr = kcalloc(num_fw_handles, sizeof(*arr), GFP_KERNEL);
21eee2dd 187 if (!arr)
52e21b1b 188 goto out; /* Keep the existing array */
21eee2dd
TK		 189 } else
190 goto out_update;
191
192 list_for_each_entry(adapter, &adapter_list, list) {
52e21b1b
JBT		 193 if (num_adapters == 0)
194 break;
195
21eee2dd
TK		 196 for (k = 0; k < EHEA_MAX_PORTS; k++) {
197 struct ehea_port *port = adapter->port[k];
198
8e95a202
JP		 199 if (!port || (port->state != EHEA_PORT_UP) ||
200 (num_ports == 0))
21eee2dd
TK		 201 continue;
202
203 for (l = 0;
204 l < port->num_def_qps + port->num_add_tx_qps;
205 l++) {
206 struct ehea_port_res *pr = &port->port_res[l];
207
208 arr[i].adh = adapter->handle;
209 arr[i++].fwh = pr->qp->fw_handle;
210 arr[i].adh = adapter->handle;
211 arr[i++].fwh = pr->send_cq->fw_handle;
212 arr[i].adh = adapter->handle;
213 arr[i++].fwh = pr->recv_cq->fw_handle;
214 arr[i].adh = adapter->handle;
215 arr[i++].fwh = pr->eq->fw_handle;
216 arr[i].adh = adapter->handle;
217 arr[i++].fwh = pr->send_mr.handle;
218 arr[i].adh = adapter->handle;
219 arr[i++].fwh = pr->recv_mr.handle;
220 }
221 arr[i].adh = adapter->handle;
222 arr[i++].fwh = port->qp_eq->fw_handle;
52e21b1b 223 num_ports--;
21eee2dd
TK		 224 }
225
226 arr[i].adh = adapter->handle;
227 arr[i++].fwh = adapter->neq->fw_handle;
228
229 if (adapter->mr.handle) {
230 arr[i].adh = adapter->handle;
231 arr[i++].fwh = adapter->mr.handle;
232 }
52e21b1b 233 num_adapters--;
21eee2dd
TK		 234 }
235
236out_update:
237 kfree(ehea_fw_handles.arr);
238 ehea_fw_handles.arr = arr;
239 ehea_fw_handles.num_entries = i;
52e21b1b
JBT		 240out:
241 mutex_unlock(&ehea_fw_handles.lock);
21eee2dd
TK		 242}
243
244static void ehea_update_bcmc_registrations(void)
245{
52e21b1b 246 unsigned long flags;
21eee2dd
TK		 247 struct ehea_bcmc_reg_entry *arr = NULL;
248 struct ehea_adapter *adapter;
249 struct ehea_mc_list *mc_entry;
250 int num_registrations = 0;
251 int i = 0;
252 int k;
253
52e21b1b
JBT		 254 spin_lock_irqsave(&ehea_bcmc_regs.lock, flags);
255
21eee2dd
TK		 256 /* Determine number of registrations */
257 list_for_each_entry(adapter, &adapter_list, list)
258 for (k = 0; k < EHEA_MAX_PORTS; k++) {
259 struct ehea_port *port = adapter->port[k];
260
261 if (!port || (port->state != EHEA_PORT_UP))
262 continue;
263
264 num_registrations += 2; /* Broadcast registrations */
265
266 list_for_each_entry(mc_entry, &port->mc_list->list,list)
267 num_registrations += 2;
268 }
269
270 if (num_registrations) {
baeb2ffa 271 arr = kcalloc(num_registrations, sizeof(*arr), GFP_ATOMIC);
21eee2dd 272 if (!arr)
52e21b1b 273 goto out; /* Keep the existing array */
21eee2dd
TK		 274 } else
275 goto out_update;
276
277 list_for_each_entry(adapter, &adapter_list, list) {
278 for (k = 0; k < EHEA_MAX_PORTS; k++) {
279 struct ehea_port *port = adapter->port[k];
280
281 if (!port || (port->state != EHEA_PORT_UP))
282 continue;
283
52e21b1b
JBT		 284 if (num_registrations == 0)
285 goto out_update;
286
21eee2dd
TK		 287 arr[i].adh = adapter->handle;
288 arr[i].port_id = port->logical_port_id;
289 arr[i].reg_type = EHEA_BCMC_BROADCAST |
290 EHEA_BCMC_UNTAGGED;
291 arr[i++].macaddr = port->mac_addr;
292
293 arr[i].adh = adapter->handle;
294 arr[i].port_id = port->logical_port_id;
295 arr[i].reg_type = EHEA_BCMC_BROADCAST |
296 EHEA_BCMC_VLANID_ALL;
297 arr[i++].macaddr = port->mac_addr;
52e21b1b 298 num_registrations -= 2;
21eee2dd
TK		 299
300 list_for_each_entry(mc_entry,
301 &port->mc_list->list, list) {
52e21b1b
JBT		 302 if (num_registrations == 0)
303 goto out_update;
304
21eee2dd
TK		 305 arr[i].adh = adapter->handle;
306 arr[i].port_id = port->logical_port_id;
307 arr[i].reg_type = EHEA_BCMC_SCOPE_ALL |
308 EHEA_BCMC_MULTICAST |
309 EHEA_BCMC_UNTAGGED;
310 arr[i++].macaddr = mc_entry->macaddr;
311
312 arr[i].adh = adapter->handle;
313 arr[i].port_id = port->logical_port_id;
314 arr[i].reg_type = EHEA_BCMC_SCOPE_ALL |
315 EHEA_BCMC_MULTICAST |
316 EHEA_BCMC_VLANID_ALL;
317 arr[i++].macaddr = mc_entry->macaddr;
52e21b1b 318 num_registrations -= 2;
21eee2dd
TK		 319 }
320 }
321 }
322
323out_update:
324 kfree(ehea_bcmc_regs.arr);
325 ehea_bcmc_regs.arr = arr;
326 ehea_bcmc_regs.num_entries = i;
52e21b1b
JBT		 327out:
328 spin_unlock_irqrestore(&ehea_bcmc_regs.lock, flags);
21eee2dd
TK		 329}
330
7a291083
JBT		 331static struct net_device_stats *ehea_get_stats(struct net_device *dev)
332{
333 struct ehea_port *port = netdev_priv(dev);
334 struct net_device_stats *stats = &port->stats;
2aefcad8 335 u64 rx_packets = 0, tx_packets = 0, rx_bytes = 0, tx_bytes = 0;
7a291083
JBT		 336 int i;
337
2aefcad8 338 for (i = 0; i < port->num_def_qps; i++) {
339 rx_packets += port->port_res[i].rx_packets;
340 rx_bytes += port->port_res[i].rx_bytes;
341 }
342
343 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
344 tx_packets += port->port_res[i].tx_packets;
345 tx_bytes += port->port_res[i].tx_bytes;
346 }
347
348 stats->tx_packets = tx_packets;
349 stats->rx_bytes = rx_bytes;
350 stats->tx_bytes = tx_bytes;
351 stats->rx_packets = rx_packets;
352
353 return &port->stats;
354}
355
356static void ehea_update_stats(struct work_struct *work)
357{
358 struct ehea_port *port =
359 container_of(work, struct ehea_port, stats_work.work);
360 struct net_device *dev = port->netdev;
361 struct net_device_stats *stats = &port->stats;
362 struct hcp_ehea_port_cb2 *cb2;
363 u64 hret;
7a291083 364
3d8009c7 365 cb2 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083 366 if (!cb2) {
2aefcad8 367 netdev_err(dev, "No mem for cb2. Some interface statistics were not updated\n");
368 goto resched;
7a291083
JBT		 369 }
370
371 hret = ehea_h_query_ehea_port(port->adapter->handle,
372 port->logical_port_id,
373 H_PORT_CB2, H_PORT_CB2_ALL, cb2);
374 if (hret != H_SUCCESS) {
8c4877a4 375 netdev_err(dev, "query_ehea_port failed\n");
7a291083
JBT		 376 goto out_herr;
377 }
378
379 if (netif_msg_hw(port))
380 ehea_dump(cb2, sizeof(*cb2), "net_device_stats");
381
7a291083
JBT		 382 stats->multicast = cb2->rxmcp;
383 stats->rx_errors = cb2->rxuerr;
7a291083
JBT		 384
385out_herr:
3faf2693 386 free_page((unsigned long)cb2);
2aefcad8 387resched:
388 schedule_delayed_work(&port->stats_work, msecs_to_jiffies(1000));
7a291083
JBT		 389}
390
391static void ehea_refill_rq1(struct ehea_port_res *pr, int index, int nr_of_wqes)
392{
393 struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
394 struct net_device *dev = pr->port->netdev;
395 int max_index_mask = pr->rq1_skba.len - 1;
2c69448b
JBT		 396 int fill_wqes = pr->rq1_skba.os_skbs + nr_of_wqes;
397 int adder = 0;
7a291083
JBT		 398 int i;
399
2c69448b
JBT		 400 pr->rq1_skba.os_skbs = 0;
401
402 if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) {
44fb3126
TK		 403 if (nr_of_wqes > 0)
404 pr->rq1_skba.index = index;
2c69448b 405 pr->rq1_skba.os_skbs = fill_wqes;
7a291083 406 return;
2c69448b 407 }
7a291083 408
2c69448b 409 for (i = 0; i < fill_wqes; i++) {
7a291083
JBT		 410 if (!skb_arr_rq1[index]) {
411 skb_arr_rq1[index] = netdev_alloc_skb(dev,
412 EHEA_L_PKT_SIZE);
413 if (!skb_arr_rq1[index]) {
8c4877a4 414 netdev_info(dev, "Unable to allocate enough skb in the array\n");
2c69448b 415 pr->rq1_skba.os_skbs = fill_wqes - i;
7a291083
JBT		 416 break;
417 }
418 }
419 index--;
420 index &= max_index_mask;
2c69448b 421 adder++;
7a291083 422 }
2c69448b
JBT		 423
424 if (adder == 0)
425 return;
426
7a291083 427 /* Ring doorbell */
2c69448b 428 ehea_update_rq1a(pr->qp, adder);
7a291083
JBT		 429}
430
e2878806 431static void ehea_init_fill_rq1(struct ehea_port_res *pr, int nr_rq1a)
7a291083 432{
7a291083
JBT		 433 struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
434 struct net_device *dev = pr->port->netdev;
435 int i;
436
5c7e57f7 437 if (nr_rq1a > pr->rq1_skba.len) {
8c4877a4 438 netdev_err(dev, "NR_RQ1A bigger than skb array len\n");
5c7e57f7
BL		 439 return;
440 }
441
442 for (i = 0; i < nr_rq1a; i++) {
7a291083 443 skb_arr_rq1[i] = netdev_alloc_skb(dev, EHEA_L_PKT_SIZE);
5c7e57f7 444 if (!skb_arr_rq1[i]) {
8c4877a4 445 netdev_info(dev, "Not enough memory to allocate skb array\n");
e2878806 446 break;
5c7e57f7 447 }
7a291083
JBT		 448 }
449 /* Ring doorbell */
f76957fc 450 ehea_update_rq1a(pr->qp, i - 1);
7a291083
JBT		 451}
452
453static int ehea_refill_rq_def(struct ehea_port_res *pr,
454 struct ehea_q_skb_arr *q_skba, int rq_nr,
455 int num_wqes, int wqe_type, int packet_size)
456{
457 struct net_device *dev = pr->port->netdev;
458 struct ehea_qp *qp = pr->qp;
459 struct sk_buff **skb_arr = q_skba->arr;
460 struct ehea_rwqe *rwqe;
461 int i, index, max_index_mask, fill_wqes;
2c69448b 462 int adder = 0;
7a291083
JBT		 463 int ret = 0;
464
465 fill_wqes = q_skba->os_skbs + num_wqes;
2c69448b 466 q_skba->os_skbs = 0;
7a291083 467
2c69448b
JBT		 468 if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) {
469 q_skba->os_skbs = fill_wqes;
7a291083 470 return ret;
2c69448b 471 }
7a291083
JBT		 472
473 index = q_skba->index;
474 max_index_mask = q_skba->len - 1;
475 for (i = 0; i < fill_wqes; i++) {
2c69448b 476 u64 tmp_addr;
89d71a66
ED		 477 struct sk_buff *skb;
478
479 skb = netdev_alloc_skb_ip_align(dev, packet_size);
7a291083 480 if (!skb) {
7a291083 481 q_skba->os_skbs = fill_wqes - i;
e2878806 482 if (q_skba->os_skbs == q_skba->len - 2) {
8c4877a4
JP		 483 netdev_info(pr->port->netdev,
484 "rq%i ran dry - no mem for skb\n",
485 rq_nr);
e2878806
TK		 486 ret = -ENOMEM;
487 }
7a291083
JBT		 488 break;
489 }
7a291083
JBT		 490
491 skb_arr[index] = skb;
2c69448b
JBT		 492 tmp_addr = ehea_map_vaddr(skb->data);
493 if (tmp_addr == -1) {
494 dev_kfree_skb(skb);
495 q_skba->os_skbs = fill_wqes - i;
496 ret = 0;
497 break;
498 }
7a291083
JBT		 499
500 rwqe = ehea_get_next_rwqe(qp, rq_nr);
501 rwqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, wqe_type)
d1d25aab 502 | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, index);
7a291083 503 rwqe->sg_list[0].l_key = pr->recv_mr.lkey;
2c69448b 504 rwqe->sg_list[0].vaddr = tmp_addr;
7a291083
JBT		 505 rwqe->sg_list[0].len = packet_size;
506 rwqe->data_segments = 1;
507
508 index++;
509 index &= max_index_mask;
2c69448b 510 adder++;
7a291083 511 }
44c82152 512
7a291083 513 q_skba->index = index;
2c69448b
JBT		 514 if (adder == 0)
515 goto out;
7a291083
JBT		 516
517 /* Ring doorbell */
518 iosync();
519 if (rq_nr == 2)
2c69448b 520 ehea_update_rq2a(pr->qp, adder);
7a291083 521 else
2c69448b 522 ehea_update_rq3a(pr->qp, adder);
44c82152 523out:
7a291083
JBT		 524 return ret;
525}
526
527
528static int ehea_refill_rq2(struct ehea_port_res *pr, int nr_of_wqes)
529{
530 return ehea_refill_rq_def(pr, &pr->rq2_skba, 2,
531 nr_of_wqes, EHEA_RWQE2_TYPE,
89d71a66 532 EHEA_RQ2_PKT_SIZE);
7a291083
JBT		 533}
534
535
536static int ehea_refill_rq3(struct ehea_port_res *pr, int nr_of_wqes)
537{
538 return ehea_refill_rq_def(pr, &pr->rq3_skba, 3,
539 nr_of_wqes, EHEA_RWQE3_TYPE,
89d71a66 540 EHEA_MAX_PACKET_SIZE);
7a291083
JBT		 541}
542
543static inline int ehea_check_cqe(struct ehea_cqe *cqe, int *rq_num)
544{
545 *rq_num = (cqe->type & EHEA_CQE_TYPE_RQ) >> 5;
546 if ((cqe->status & EHEA_CQE_STAT_ERR_MASK) == 0)
547 return 0;
548 if (((cqe->status & EHEA_CQE_STAT_ERR_TCP) != 0) &&
549 (cqe->header_length == 0))
550 return 0;
551 return -EINVAL;
552}
553
554static inline void ehea_fill_skb(struct net_device *dev,
b9564468
AB		 555 struct sk_buff *skb, struct ehea_cqe *cqe,
556 struct ehea_port_res *pr)
7a291083
JBT		 557{
558 int length = cqe->num_bytes_transfered - 4; /*remove CRC */
559
560 skb_put(skb, length);
7a291083 561 skb->protocol = eth_type_trans(skb, dev);
71085ce8
BL		 562
563 /* The packet was not an IPV4 packet so a complemented checksum was
564 calculated. The value is found in the Internet Checksum field. */
565 if (cqe->status & EHEA_CQE_BLIND_CKSUM) {
566 skb->ip_summed = CHECKSUM_COMPLETE;
567 skb->csum = csum_unfold(~cqe->inet_checksum_value);
568 } else
569 skb->ip_summed = CHECKSUM_UNNECESSARY;
b9564468
AB		 570
571 skb_record_rx_queue(skb, pr - &pr->port->port_res[0]);
7a291083
JBT		 572}
573
574static inline struct sk_buff *get_skb_by_index(struct sk_buff **skb_array,
575 int arr_len,
576 struct ehea_cqe *cqe)
577{
578 int skb_index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, cqe->wr_id);
579 struct sk_buff *skb;
580 void *pref;
581 int x;
582
583 x = skb_index + 1;
584 x &= (arr_len - 1);
585
586 pref = skb_array[x];
0b2febf3
HH		 587 if (pref) {
588 prefetchw(pref);
589 prefetchw(pref + EHEA_CACHE_LINE);
590
591 pref = (skb_array[x]->data);
592 prefetch(pref);
593 prefetch(pref + EHEA_CACHE_LINE);
594 prefetch(pref + EHEA_CACHE_LINE * 2);
595 prefetch(pref + EHEA_CACHE_LINE * 3);
596 }
597
7a291083
JBT		 598 skb = skb_array[skb_index];
599 skb_array[skb_index] = NULL;
600 return skb;
601}
602
603static inline struct sk_buff *get_skb_by_index_ll(struct sk_buff **skb_array,
604 int arr_len, int wqe_index)
605{
606 struct sk_buff *skb;
607 void *pref;
608 int x;
609
610 x = wqe_index + 1;
611 x &= (arr_len - 1);
612
613 pref = skb_array[x];
0b2febf3
HH		 614 if (pref) {
615 prefetchw(pref);
616 prefetchw(pref + EHEA_CACHE_LINE);
7a291083 617
0b2febf3
HH		 618 pref = (skb_array[x]->data);
619 prefetchw(pref);
620 prefetchw(pref + EHEA_CACHE_LINE);
621 }
7a291083
JBT		 622
623 skb = skb_array[wqe_index];
624 skb_array[wqe_index] = NULL;
625 return skb;
626}
627
628static int ehea_treat_poll_error(struct ehea_port_res *pr, int rq,
629 struct ehea_cqe *cqe, int *processed_rq2,
630 int *processed_rq3)
631{
632 struct sk_buff *skb;
633
acbddb59
JBT		 634 if (cqe->status & EHEA_CQE_STAT_ERR_TCP)
635 pr->p_stats.err_tcp_cksum++;
636 if (cqe->status & EHEA_CQE_STAT_ERR_IP)
637 pr->p_stats.err_ip_cksum++;
638 if (cqe->status & EHEA_CQE_STAT_ERR_CRC)
639 pr->p_stats.err_frame_crc++;
640
7a291083
JBT		 641 if (rq == 2) {
642 *processed_rq2 += 1;
643 skb = get_skb_by_index(pr->rq2_skba.arr, pr->rq2_skba.len, cqe);
644 dev_kfree_skb(skb);
645 } else if (rq == 3) {
646 *processed_rq3 += 1;
647 skb = get_skb_by_index(pr->rq3_skba.arr, pr->rq3_skba.len, cqe);
648 dev_kfree_skb(skb);
649 }
650
651 if (cqe->status & EHEA_CQE_STAT_FAT_ERR_MASK) {
58dd8258 652 if (netif_msg_rx_err(pr->port)) {
8c4877a4
JP		 653 pr_err("Critical receive error for QP %d. Resetting port.\n",
654 pr->qp->init_attr.qp_nr);
58dd8258
TK		 655 ehea_dump(cqe, sizeof(*cqe), "CQE");
656 }
2f69ae01 657 ehea_schedule_port_reset(pr->port);
7a291083
JBT		 658 return 1;
659 }
660
661 return 0;
662}
663
d4dc4ec9
JBT		 664static int get_skb_hdr(struct sk_buff *skb, void **iphdr,
665 void **tcph, u64 *hdr_flags, void *priv)
666{
667 struct ehea_cqe *cqe = priv;
668 unsigned int ip_len;
669 struct iphdr *iph;
670
671 /* non tcp/udp packets */
672 if (!cqe->header_length)
673 return -1;
674
675 /* non tcp packet */
676 skb_reset_network_header(skb);
677 iph = ip_hdr(skb);
678 if (iph->protocol != IPPROTO_TCP)
679 return -1;
680
681 ip_len = ip_hdrlen(skb);
682 skb_set_transport_header(skb, ip_len);
683 *tcph = tcp_hdr(skb);
684
685 /* check if ip header and tcp header are complete */
3ff2cd23 686 if (ntohs(iph->tot_len) < ip_len + tcp_hdrlen(skb))
d4dc4ec9
JBT		 687 return -1;
688
689 *hdr_flags = LRO_IPV4 | LRO_TCP;
690 *iphdr = iph;
691
692 return 0;
693}
694
695static void ehea_proc_skb(struct ehea_port_res *pr, struct ehea_cqe *cqe,
696 struct sk_buff *skb)
697{
b4950095
JP		 698 if (cqe->status & EHEA_CQE_VLAN_TAG_XTRACT)
699 __vlan_hwaccel_put_tag(skb, cqe->vlan_tag);
700
701 if (skb->dev->features & NETIF_F_LRO)
702 lro_receive_skb(&pr->lro_mgr, skb, cqe);
703 else
704 netif_receive_skb(skb);
d4dc4ec9
JBT		 705}
706
bea3348e
SH		 707static int ehea_proc_rwqes(struct net_device *dev,
708 struct ehea_port_res *pr,
709 int budget)
7a291083 710{
18604c54 711 struct ehea_port *port = pr->port;
7a291083
JBT		 712 struct ehea_qp *qp = pr->qp;
713 struct ehea_cqe *cqe;
714 struct sk_buff *skb;
715 struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
716 struct sk_buff **skb_arr_rq2 = pr->rq2_skba.arr;
717 struct sk_buff **skb_arr_rq3 = pr->rq3_skba.arr;
718 int skb_arr_rq1_len = pr->rq1_skba.len;
719 int skb_arr_rq2_len = pr->rq2_skba.len;
720 int skb_arr_rq3_len = pr->rq3_skba.len;
721 int processed, processed_rq1, processed_rq2, processed_rq3;
ce45b873 722 u64 processed_bytes = 0;
bea3348e 723 int wqe_index, last_wqe_index, rq, port_reset;
7a291083
JBT		 724
725 processed = processed_rq1 = processed_rq2 = processed_rq3 = 0;
726 last_wqe_index = 0;
7a291083 727
7a291083 728 cqe = ehea_poll_rq1(qp, &wqe_index);
bea3348e 729 while ((processed < budget) && cqe) {
7a291083
JBT		 730 ehea_inc_rq1(qp);
731 processed_rq1++;
732 processed++;
7a291083
JBT		 733 if (netif_msg_rx_status(port))
734 ehea_dump(cqe, sizeof(*cqe), "CQE");
735
736 last_wqe_index = wqe_index;
737 rmb();
738 if (!ehea_check_cqe(cqe, &rq)) {
508d2b5d
DM		 739 if (rq == 1) {
740 /* LL RQ1 */
7a291083
JBT		 741 skb = get_skb_by_index_ll(skb_arr_rq1,
742 skb_arr_rq1_len,
743 wqe_index);
744 if (unlikely(!skb)) {
782615ae 745 netif_info(port, rx_err, dev,
8c4877a4 746 "LL rq1: skb=NULL\n");
18604c54 747
bea3348e 748 skb = netdev_alloc_skb(dev,
7a291083 749 EHEA_L_PKT_SIZE);
5c7e57f7 750 if (!skb) {
782615ae 751 netdev_err(dev, "Not enough memory to allocate skb\n");
7a291083 752 break;
5c7e57f7 753 }
7a291083 754 }
508d2b5d 755 skb_copy_to_linear_data(skb, ((char *)cqe) + 64,
d1d25aab 756 cqe->num_bytes_transfered - 4);
b9564468 757 ehea_fill_skb(dev, skb, cqe, pr);
508d2b5d
DM		 758 } else if (rq == 2) {
759 /* RQ2 */
7a291083
JBT		 760 skb = get_skb_by_index(skb_arr_rq2,
761 skb_arr_rq2_len, cqe);
762 if (unlikely(!skb)) {
8c4877a4
JP		 763 netif_err(port, rx_err, dev,
764 "rq2: skb=NULL\n");
7a291083
JBT		 765 break;
766 }
b9564468 767 ehea_fill_skb(dev, skb, cqe, pr);
7a291083 768 processed_rq2++;
508d2b5d
DM		 769 } else {
770 /* RQ3 */
7a291083
JBT		 771 skb = get_skb_by_index(skb_arr_rq3,
772 skb_arr_rq3_len, cqe);
773 if (unlikely(!skb)) {
8c4877a4
JP		 774 netif_err(port, rx_err, dev,
775 "rq3: skb=NULL\n");
7a291083
JBT		 776 break;
777 }
b9564468 778 ehea_fill_skb(dev, skb, cqe, pr);
7a291083
JBT		 779 processed_rq3++;
780 }
781
ce45b873 782 processed_bytes += skb->len;
d4dc4ec9 783 ehea_proc_skb(pr, cqe, skb);
18604c54 784 } else {
acbddb59 785 pr->p_stats.poll_receive_errors++;
7a291083
JBT		 786 port_reset = ehea_treat_poll_error(pr, rq, cqe,
787 &processed_rq2,
788 &processed_rq3);
789 if (port_reset)
790 break;
791 }
792 cqe = ehea_poll_rq1(qp, &wqe_index);
793 }
c7757fdb 794 if (dev->features & NETIF_F_LRO)
d4dc4ec9 795 lro_flush_all(&pr->lro_mgr);
7a291083 796
7a291083 797 pr->rx_packets += processed;
ce45b873 798 pr->rx_bytes += processed_bytes;
7a291083
JBT		 799
800 ehea_refill_rq1(pr, last_wqe_index, processed_rq1);
801 ehea_refill_rq2(pr, processed_rq2);
802 ehea_refill_rq3(pr, processed_rq3);
803
bea3348e 804 return processed;
7a291083
JBT		 805}
806
2928db4c
AD		 807#define SWQE_RESTART_CHECK 0xdeadbeaff00d0000ull
808
809static void reset_sq_restart_flag(struct ehea_port *port)
810{
811 int i;
812
813 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
814 struct ehea_port_res *pr = &port->port_res[i];
815 pr->sq_restart_flag = 0;
816 }
a8bb69f7 817 wake_up(&port->restart_wq);
2928db4c
AD		 818}
819
820static void check_sqs(struct ehea_port *port)
821{
822 struct ehea_swqe *swqe;
823 int swqe_index;
824 int i, k;
825
826 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
827 struct ehea_port_res *pr = &port->port_res[i];
a8bb69f7 828 int ret;
2928db4c
AD		 829 k = 0;
830 swqe = ehea_get_swqe(pr->qp, &swqe_index);
831 memset(swqe, 0, SWQE_HEADER_SIZE);
832 atomic_dec(&pr->swqe_avail);
833
834 swqe->tx_control |= EHEA_SWQE_PURGE;
835 swqe->wr_id = SWQE_RESTART_CHECK;
836 swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
837 swqe->tx_control |= EHEA_SWQE_IMM_DATA_PRESENT;
838 swqe->immediate_data_length = 80;
839
840 ehea_post_swqe(pr->qp, swqe);
841
a8bb69f7
BL		 842 ret = wait_event_timeout(port->restart_wq,
843 pr->sq_restart_flag == 0,
844 msecs_to_jiffies(100));
845
846 if (!ret) {
8c4877a4 847 pr_err("HW/SW queues out of sync\n");
a8bb69f7
BL		 848 ehea_schedule_port_reset(pr->port);
849 return;
2928db4c
AD		 850 }
851 }
2928db4c
AD		 852}
853
854
18604c54 855static struct ehea_cqe *ehea_proc_cqes(struct ehea_port_res *pr, int my_quota)
7a291083 856{
acbddb59 857 struct sk_buff *skb;
7a291083
JBT		 858 struct ehea_cq *send_cq = pr->send_cq;
859 struct ehea_cqe *cqe;
18604c54 860 int quota = my_quota;
7a291083
JBT		 861 int cqe_counter = 0;
862 int swqe_av = 0;
acbddb59 863 int index;
b9564468
AB		 864 struct netdev_queue *txq = netdev_get_tx_queue(pr->port->netdev,
865 pr - &pr->port->port_res[0]);
7a291083 866
18604c54 867 cqe = ehea_poll_cq(send_cq);
508d2b5d 868 while (cqe && (quota > 0)) {
18604c54
JBT		 869 ehea_inc_cq(send_cq);
870
7a291083
JBT		 871 cqe_counter++;
872 rmb();
2928db4c
AD		 873
874 if (cqe->wr_id == SWQE_RESTART_CHECK) {
875 pr->sq_restart_flag = 1;
876 swqe_av++;
877 break;
878 }
879
7a291083 880 if (cqe->status & EHEA_CQE_STAT_ERR_MASK) {
8c4877a4
JP		 881 pr_err("Bad send completion status=0x%04X\n",
882 cqe->status);
ea96ceac 883
7a291083
JBT		 884 if (netif_msg_tx_err(pr->port))
885 ehea_dump(cqe, sizeof(*cqe), "Send CQE");
ea96ceac
TK		 886
887 if (cqe->status & EHEA_CQE_STAT_RESET_MASK) {
8c4877a4 888 pr_err("Resetting port\n");
ea96ceac
TK		 889 ehea_schedule_port_reset(pr->port);
890 break;
891 }
7a291083
JBT		 892 }
893
894 if (netif_msg_tx_done(pr->port))
895 ehea_dump(cqe, sizeof(*cqe), "CQE");
896
897 if (likely(EHEA_BMASK_GET(EHEA_WR_ID_TYPE, cqe->wr_id)
acbddb59
JBT		 898 == EHEA_SWQE2_TYPE)) {
899
900 index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, cqe->wr_id);
901 skb = pr->sq_skba.arr[index];
902 dev_kfree_skb(skb);
903 pr->sq_skba.arr[index] = NULL;
904 }
7a291083
JBT		 905
906 swqe_av += EHEA_BMASK_GET(EHEA_WR_ID_REFILL, cqe->wr_id);
907 quota--;
18604c54
JBT		 908
909 cqe = ehea_poll_cq(send_cq);
ee289b64 910 }
7a291083
JBT		 911
912 ehea_update_feca(send_cq, cqe_counter);
913 atomic_add(swqe_av, &pr->swqe_avail);
914
b9564468
AB		 915 if (unlikely(netif_tx_queue_stopped(txq) &&
916 (atomic_read(&pr->swqe_avail) >= pr->swqe_refill_th))) {
917 __netif_tx_lock(txq, smp_processor_id());
918 if (netif_tx_queue_stopped(txq) &&
919 (atomic_read(&pr->swqe_avail) >= pr->swqe_refill_th))
920 netif_tx_wake_queue(txq);
921 __netif_tx_unlock(txq);
7a291083 922 }
b9564468 923
5b27d427 924 wake_up(&pr->port->swqe_avail_wq);
7a291083 925
18604c54 926 return cqe;
7a291083
JBT		 927}
928
18604c54 929#define EHEA_NAPI_POLL_NUM_BEFORE_IRQ 16
bea3348e 930#define EHEA_POLL_MAX_CQES 65535
18604c54 931
bea3348e 932static int ehea_poll(struct napi_struct *napi, int budget)
7a291083 933{
508d2b5d
DM		 934 struct ehea_port_res *pr = container_of(napi, struct ehea_port_res,
935 napi);
bea3348e 936 struct net_device *dev = pr->port->netdev;
18604c54
JBT		 937 struct ehea_cqe *cqe;
938 struct ehea_cqe *cqe_skb = NULL;
939 int force_irq, wqe_index;
bea3348e 940 int rx = 0;
18604c54
JBT		 941
942 force_irq = (pr->poll_counter > EHEA_NAPI_POLL_NUM_BEFORE_IRQ);
bea3348e
SH		 943 cqe_skb = ehea_proc_cqes(pr, EHEA_POLL_MAX_CQES);
944
945 if (!force_irq)
946 rx += ehea_proc_rwqes(dev, pr, budget - rx);
18604c54 947
bea3348e 948 while ((rx != budget) || force_irq) {
18604c54 949 pr->poll_counter = 0;
bea3348e 950 force_irq = 0;
288379f0 951 napi_complete(napi);
18604c54
JBT		 952 ehea_reset_cq_ep(pr->recv_cq);
953 ehea_reset_cq_ep(pr->send_cq);
954 ehea_reset_cq_n1(pr->recv_cq);
955 ehea_reset_cq_n1(pr->send_cq);
a91fb143 956 rmb();
18604c54
JBT		 957 cqe = ehea_poll_rq1(pr->qp, &wqe_index);
958 cqe_skb = ehea_poll_cq(pr->send_cq);
959
e542aa6b 960 if (!cqe && !cqe_skb)
bea3348e 961 return rx;
18604c54 962
288379f0 963 if (!napi_reschedule(napi))
bea3348e 964 return rx;
18604c54 965
bea3348e
SH		 966 cqe_skb = ehea_proc_cqes(pr, EHEA_POLL_MAX_CQES);
967 rx += ehea_proc_rwqes(dev, pr, budget - rx);
968 }
e542aa6b 969
bea3348e
SH		 970 pr->poll_counter++;
971 return rx;
7a291083
JBT		 972}
973
8d22c971
JBT		 974#ifdef CONFIG_NET_POLL_CONTROLLER
975static void ehea_netpoll(struct net_device *dev)
976{
977 struct ehea_port *port = netdev_priv(dev);
bea3348e 978 int i;
8d22c971 979
bea3348e 980 for (i = 0; i < port->num_def_qps; i++)
288379f0 981 napi_schedule(&port->port_res[i].napi);
8d22c971
JBT		 982}
983#endif
984
7d12e780 985static irqreturn_t ehea_recv_irq_handler(int irq, void *param)
7a291083
JBT		 986{
987 struct ehea_port_res *pr = param;
18604c54 988
288379f0 989 napi_schedule(&pr->napi);
18604c54 990
7a291083
JBT		 991 return IRQ_HANDLED;
992}
993
7d12e780 994static irqreturn_t ehea_qp_aff_irq_handler(int irq, void *param)
7a291083
JBT		 995{
996 struct ehea_port *port = param;
997 struct ehea_eqe *eqe;
d2db9eea 998 struct ehea_qp *qp;
7a291083 999 u32 qp_token;
ea96ceac
TK		 1000 u64 resource_type, aer, aerr;
1001 int reset_port = 0;
7a291083
JBT		 1002
1003 eqe = ehea_poll_eq(port->qp_eq);
bb3a6449 1004
7a291083 1005 while (eqe) {
7a291083 1006 qp_token = EHEA_BMASK_GET(EHEA_EQE_QP_TOKEN, eqe->entry);
8c4877a4
JP		 1007 pr_err("QP aff_err: entry=0x%llx, token=0x%x\n",
1008 eqe->entry, qp_token);
d2db9eea
JBT		 1009
1010 qp = port->port_res[qp_token].qp;
ea96ceac
TK		 1011
1012 resource_type = ehea_error_data(port->adapter, qp->fw_handle,
1013 &aer, &aerr);
1014
1015 if (resource_type == EHEA_AER_RESTYPE_QP) {
1016 if ((aer & EHEA_AER_RESET_MASK) ||
1017 (aerr & EHEA_AERR_RESET_MASK))
1018 reset_port = 1;
1019 } else
1020 reset_port = 1; /* Reset in case of CQ or EQ error */
1021
bb3a6449 1022 eqe = ehea_poll_eq(port->qp_eq);
7a291083
JBT		 1023 }
1024
ea96ceac 1025 if (reset_port) {
8c4877a4 1026 pr_err("Resetting port\n");
ea96ceac
TK		 1027 ehea_schedule_port_reset(port);
1028 }
d2db9eea 1029
7a291083
JBT		 1030 return IRQ_HANDLED;
1031}
1032
1033static struct ehea_port *ehea_get_port(struct ehea_adapter *adapter,
1034 int logical_port)
1035{
1036 int i;
1037
1acf2318 1038 for (i = 0; i < EHEA_MAX_PORTS; i++)
41b69c70 1039 if (adapter->port[i])
d1d25aab 1040 if (adapter->port[i]->logical_port_id == logical_port)
41b69c70 1041 return adapter->port[i];
7a291083
JBT		 1042 return NULL;
1043}
1044
1045int ehea_sense_port_attr(struct ehea_port *port)
1046{
1047 int ret;
1048 u64 hret;
1049 struct hcp_ehea_port_cb0 *cb0;
1050
508d2b5d 1051 /* may be called via ehea_neq_tasklet() */
3faf2693 1052 cb0 = (void *)get_zeroed_page(GFP_ATOMIC);
508d2b5d 1053 if (!cb0) {
8c4877a4 1054 pr_err("no mem for cb0\n");
7a291083
JBT		 1055 ret = -ENOMEM;
1056 goto out;
1057 }
1058
1059 hret = ehea_h_query_ehea_port(port->adapter->handle,
1060 port->logical_port_id, H_PORT_CB0,
1061 EHEA_BMASK_SET(H_PORT_CB0_ALL, 0xFFFF),
1062 cb0);
1063 if (hret != H_SUCCESS) {
1064 ret = -EIO;
1065 goto out_free;
1066 }
1067
1068 /* MAC address */
1069 port->mac_addr = cb0->port_mac_addr << 16;
1070
508d2b5d 1071 if (!is_valid_ether_addr((u8 *)&port->mac_addr)) {
7a291083
JBT		 1072 ret = -EADDRNOTAVAIL;
1073 goto out_free;
1074 }
1075
1076 /* Port speed */
1077 switch (cb0->port_speed) {
1078 case H_SPEED_10M_H:
1079 port->port_speed = EHEA_SPEED_10M;
1080 port->full_duplex = 0;
1081 break;
1082 case H_SPEED_10M_F:
1083 port->port_speed = EHEA_SPEED_10M;
1084 port->full_duplex = 1;
1085 break;
1086 case H_SPEED_100M_H:
1087 port->port_speed = EHEA_SPEED_100M;
1088 port->full_duplex = 0;
1089 break;
1090 case H_SPEED_100M_F:
1091 port->port_speed = EHEA_SPEED_100M;
1092 port->full_duplex = 1;
1093 break;
1094 case H_SPEED_1G_F:
1095 port->port_speed = EHEA_SPEED_1G;
1096 port->full_duplex = 1;
1097 break;
1098 case H_SPEED_10G_F:
1099 port->port_speed = EHEA_SPEED_10G;
1100 port->full_duplex = 1;
1101 break;
1102 default:
1103 port->port_speed = 0;
1104 port->full_duplex = 0;
1105 break;
1106 }
1107
e919b593 1108 port->autoneg = 1;
18604c54 1109 port->num_mcs = cb0->num_default_qps;
e919b593 1110
7a291083 1111 /* Number of default QPs */
18604c54
JBT		 1112 if (use_mcs)
1113 port->num_def_qps = cb0->num_default_qps;
1114 else
1115 port->num_def_qps = 1;
7a291083
JBT		 1116
1117 if (!port->num_def_qps) {
1118 ret = -EINVAL;
1119 goto out_free;
1120 }
1121
18604c54
JBT		 1122 port->num_tx_qps = num_tx_qps;
1123
1124 if (port->num_def_qps >= port->num_tx_qps)
7a291083
JBT		 1125 port->num_add_tx_qps = 0;
1126 else
18604c54 1127 port->num_add_tx_qps = port->num_tx_qps - port->num_def_qps;
7a291083
JBT		 1128
1129 ret = 0;
1130out_free:
1131 if (ret || netif_msg_probe(port))
1132 ehea_dump(cb0, sizeof(*cb0), "ehea_sense_port_attr");
3faf2693 1133 free_page((unsigned long)cb0);
7a291083
JBT		 1134out:
1135 return ret;
1136}
1137
1138int ehea_set_portspeed(struct ehea_port *port, u32 port_speed)
1139{
1140 struct hcp_ehea_port_cb4 *cb4;
1141 u64 hret;
1142 int ret = 0;
1143
3faf2693 1144 cb4 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083 1145 if (!cb4) {
8c4877a4 1146 pr_err("no mem for cb4\n");
7a291083
JBT		 1147 ret = -ENOMEM;
1148 goto out;
1149 }
1150
1151 cb4->port_speed = port_speed;
1152
1153 netif_carrier_off(port->netdev);
1154
1155 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1156 port->logical_port_id,
1157 H_PORT_CB4, H_PORT_CB4_SPEED, cb4);
1158 if (hret == H_SUCCESS) {
1159 port->autoneg = port_speed == EHEA_SPEED_AUTONEG ? 1 : 0;
1160
1161 hret = ehea_h_query_ehea_port(port->adapter->handle,
1162 port->logical_port_id,
1163 H_PORT_CB4, H_PORT_CB4_SPEED,
1164 cb4);
1165 if (hret == H_SUCCESS) {
1166 switch (cb4->port_speed) {
1167 case H_SPEED_10M_H:
1168 port->port_speed = EHEA_SPEED_10M;
1169 port->full_duplex = 0;
1170 break;
1171 case H_SPEED_10M_F:
1172 port->port_speed = EHEA_SPEED_10M;
1173 port->full_duplex = 1;
1174 break;
1175 case H_SPEED_100M_H:
1176 port->port_speed = EHEA_SPEED_100M;
1177 port->full_duplex = 0;
1178 break;
1179 case H_SPEED_100M_F:
1180 port->port_speed = EHEA_SPEED_100M;
1181 port->full_duplex = 1;
1182 break;
1183 case H_SPEED_1G_F:
1184 port->port_speed = EHEA_SPEED_1G;
1185 port->full_duplex = 1;
1186 break;
1187 case H_SPEED_10G_F:
1188 port->port_speed = EHEA_SPEED_10G;
1189 port->full_duplex = 1;
1190 break;
1191 default:
1192 port->port_speed = 0;
1193 port->full_duplex = 0;
1194 break;
1195 }
1196 } else {
8c4877a4 1197 pr_err("Failed sensing port speed\n");
7a291083
JBT		 1198 ret = -EIO;
1199 }
1200 } else {
1201 if (hret == H_AUTHORITY) {
8c4877a4 1202 pr_info("Hypervisor denied setting port speed\n");
7a291083
JBT		 1203 ret = -EPERM;
1204 } else {
1205 ret = -EIO;
8c4877a4 1206 pr_err("Failed setting port speed\n");
7a291083
JBT		 1207 }
1208 }
8759cf76
JBT		 1209 if (!prop_carrier_state || (port->phy_link == EHEA_PHY_LINK_UP))
1210 netif_carrier_on(port->netdev);
1211
3faf2693 1212 free_page((unsigned long)cb4);
7a291083
JBT		 1213out:
1214 return ret;
1215}
1216
1217static void ehea_parse_eqe(struct ehea_adapter *adapter, u64 eqe)
1218{
1219 int ret;
1220 u8 ec;
1221 u8 portnum;
1222 struct ehea_port *port;
8c4877a4 1223 struct net_device *dev;
7a291083
JBT		 1224
1225 ec = EHEA_BMASK_GET(NEQE_EVENT_CODE, eqe);
1226 portnum = EHEA_BMASK_GET(NEQE_PORTNUM, eqe);
1227 port = ehea_get_port(adapter, portnum);
8c4877a4 1228 dev = port->netdev;
7a291083
JBT		 1229
1230 switch (ec) {
1231 case EHEA_EC_PORTSTATE_CHG: /* port state change */
1232
1233 if (!port) {
8c4877a4 1234 netdev_err(dev, "unknown portnum %x\n", portnum);
7a291083
JBT		 1235 break;
1236 }
1237
1238 if (EHEA_BMASK_GET(NEQE_PORT_UP, eqe)) {
8c4877a4 1239 if (!netif_carrier_ok(dev)) {
1e1675cc 1240 ret = ehea_sense_port_attr(port);
7a291083 1241 if (ret) {
8c4877a4 1242 netdev_err(dev, "failed resensing port attributes\n");
7a291083
JBT		 1243 break;
1244 }
1245
8c4877a4
JP		 1246 netif_info(port, link, dev,
1247 "Logical port up: %dMbps %s Duplex\n",
1248 port->port_speed,
1249 port->full_duplex == 1 ?
1250 "Full" : "Half");
7a291083 1251
8c4877a4
JP		 1252 netif_carrier_on(dev);
1253 netif_wake_queue(dev);
7a291083
JBT		 1254 }
1255 } else
8c4877a4
JP		 1256 if (netif_carrier_ok(dev)) {
1257 netif_info(port, link, dev,
1258 "Logical port down\n");
1259 netif_carrier_off(dev);
b9564468 1260 netif_tx_disable(dev);
7a291083
JBT		 1261 }
1262
1263 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PORT_UP, eqe)) {
8759cf76 1264 port->phy_link = EHEA_PHY_LINK_UP;
8c4877a4
JP		 1265 netif_info(port, link, dev,
1266 "Physical port up\n");
8759cf76 1267 if (prop_carrier_state)
8c4877a4 1268 netif_carrier_on(dev);
7a291083 1269 } else {
8759cf76 1270 port->phy_link = EHEA_PHY_LINK_DOWN;
8c4877a4
JP		 1271 netif_info(port, link, dev,
1272 "Physical port down\n");
8759cf76 1273 if (prop_carrier_state)
8c4877a4 1274 netif_carrier_off(dev);
7a291083
JBT		 1275 }
1276
1277 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PRIMARY, eqe))
8c4877a4
JP		 1278 netdev_info(dev,
1279 "External switch port is primary port\n");
7a291083 1280 else
8c4877a4
JP		 1281 netdev_info(dev,
1282 "External switch port is backup port\n");
7a291083
JBT		 1283
1284 break;
1285 case EHEA_EC_ADAPTER_MALFUNC:
8c4877a4 1286 netdev_err(dev, "Adapter malfunction\n");
7a291083
JBT		 1287 break;
1288 case EHEA_EC_PORT_MALFUNC:
8c4877a4
JP		 1289 netdev_info(dev, "Port malfunction\n");
1290 netif_carrier_off(dev);
b9564468 1291 netif_tx_disable(dev);
7a291083
JBT		 1292 break;
1293 default:
8c4877a4 1294 netdev_err(dev, "unknown event code %x, eqe=0x%llX\n", ec, eqe);
7a291083
JBT		 1295 break;
1296 }
1297}
1298
1299static void ehea_neq_tasklet(unsigned long data)
1300{
508d2b5d 1301 struct ehea_adapter *adapter = (struct ehea_adapter *)data;
7a291083
JBT		 1302 struct ehea_eqe *eqe;
1303 u64 event_mask;
1304
1305 eqe = ehea_poll_eq(adapter->neq);
8c4877a4 1306 pr_debug("eqe=%p\n", eqe);
7a291083
JBT		 1307
1308 while (eqe) {
8c4877a4 1309 pr_debug("*eqe=%lx\n", (unsigned long) eqe->entry);
7a291083
JBT		 1310 ehea_parse_eqe(adapter, eqe->entry);
1311 eqe = ehea_poll_eq(adapter->neq);
8c4877a4 1312 pr_debug("next eqe=%p\n", eqe);
7a291083
JBT		 1313 }
1314
1315 event_mask = EHEA_BMASK_SET(NELR_PORTSTATE_CHG, 1)
1316 | EHEA_BMASK_SET(NELR_ADAPTER_MALFUNC, 1)
1317 | EHEA_BMASK_SET(NELR_PORT_MALFUNC, 1);
1318
1319 ehea_h_reset_events(adapter->handle,
1320 adapter->neq->fw_handle, event_mask);
1321}
1322
7d12e780 1323static irqreturn_t ehea_interrupt_neq(int irq, void *param)
7a291083
JBT		 1324{
1325 struct ehea_adapter *adapter = param;
1326 tasklet_hi_schedule(&adapter->neq_tasklet);
1327 return IRQ_HANDLED;
1328}
1329
1330
1331static int ehea_fill_port_res(struct ehea_port_res *pr)
1332{
1333 int ret;
1334 struct ehea_qp_init_attr *init_attr = &pr->qp->init_attr;
1335
f76957fc 1336 ehea_init_fill_rq1(pr, pr->rq1_skba.len);
7a291083 1337
e2878806 1338 ret = ehea_refill_rq2(pr, init_attr->act_nr_rwqes_rq2 - 1);
7a291083
JBT		 1339
1340 ret |= ehea_refill_rq3(pr, init_attr->act_nr_rwqes_rq3 - 1);
1341
1342 return ret;
1343}
1344
1345static int ehea_reg_interrupts(struct net_device *dev)
1346{
1347 struct ehea_port *port = netdev_priv(dev);
1348 struct ehea_port_res *pr;
1349 int i, ret;
1350
7a291083
JBT		 1351
1352 snprintf(port->int_aff_name, EHEA_IRQ_NAME_SIZE - 1, "%s-aff",
1353 dev->name);
1354
6b08f3ae 1355 ret = ibmebus_request_irq(port->qp_eq->attr.ist1,
7a291083 1356 ehea_qp_aff_irq_handler,
38515e90 1357 IRQF_DISABLED, port->int_aff_name, port);
7a291083 1358 if (ret) {
8c4877a4
JP		 1359 netdev_err(dev, "failed registering irq for qp_aff_irq_handler:ist=%X\n",
1360 port->qp_eq->attr.ist1);
7a291083
JBT		 1361 goto out_free_qpeq;
1362 }
1363
8c4877a4
JP		 1364 netif_info(port, ifup, dev,
1365 "irq_handle 0x%X for function qp_aff_irq_handler registered\n",
1366 port->qp_eq->attr.ist1);
7a291083 1367
18604c54 1368
7a291083
JBT		 1369 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
1370 pr = &port->port_res[i];
1371 snprintf(pr->int_send_name, EHEA_IRQ_NAME_SIZE - 1,
18604c54 1372 "%s-queue%d", dev->name, i);
6b08f3ae 1373 ret = ibmebus_request_irq(pr->eq->attr.ist1,
18604c54 1374 ehea_recv_irq_handler,
38515e90 1375 IRQF_DISABLED, pr->int_send_name,
7a291083
JBT		 1376 pr);
1377 if (ret) {
8c4877a4
JP		 1378 netdev_err(dev, "failed registering irq for ehea_queue port_res_nr:%d, ist=%X\n",
1379 i, pr->eq->attr.ist1);
7a291083
JBT		 1380 goto out_free_req;
1381 }
8c4877a4
JP		 1382 netif_info(port, ifup, dev,
1383 "irq_handle 0x%X for function ehea_queue_int %d registered\n",
1384 pr->eq->attr.ist1, i);
7a291083
JBT		 1385 }
1386out:
1387 return ret;
1388
18604c54 1389
7a291083
JBT		 1390out_free_req:
1391 while (--i >= 0) {
18604c54 1392 u32 ist = port->port_res[i].eq->attr.ist1;
6b08f3ae 1393 ibmebus_free_irq(ist, &port->port_res[i]);
7a291083 1394 }
18604c54 1395
7a291083 1396out_free_qpeq:
6b08f3ae 1397 ibmebus_free_irq(port->qp_eq->attr.ist1, port);
7a291083 1398 i = port->num_def_qps;
18604c54 1399
7a291083 1400 goto out;
18604c54 1401
7a291083
JBT		 1402}
1403
1404static void ehea_free_interrupts(struct net_device *dev)
1405{
1406 struct ehea_port *port = netdev_priv(dev);
1407 struct ehea_port_res *pr;
1408 int i;
1409
1410 /* send */
18604c54 1411
7a291083
JBT		 1412 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
1413 pr = &port->port_res[i];
6b08f3ae 1414 ibmebus_free_irq(pr->eq->attr.ist1, pr);
8c4877a4
JP		 1415 netif_info(port, intr, dev,
1416 "free send irq for res %d with handle 0x%X\n",
1417 i, pr->eq->attr.ist1);
7a291083
JBT		 1418 }
1419
1420 /* associated events */
6b08f3ae 1421 ibmebus_free_irq(port->qp_eq->attr.ist1, port);
8c4877a4
JP		 1422 netif_info(port, intr, dev,
1423 "associated event interrupt for handle 0x%X freed\n",
1424 port->qp_eq->attr.ist1);
7a291083
JBT		 1425}
1426
1427static int ehea_configure_port(struct ehea_port *port)
1428{
1429 int ret, i;
1430 u64 hret, mask;
1431 struct hcp_ehea_port_cb0 *cb0;
1432
1433 ret = -ENOMEM;
3faf2693 1434 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083
JBT		 1435 if (!cb0)
1436 goto out;
1437
1438 cb0->port_rc = EHEA_BMASK_SET(PXLY_RC_VALID, 1)
1439 | EHEA_BMASK_SET(PXLY_RC_IP_CHKSUM, 1)
1440 | EHEA_BMASK_SET(PXLY_RC_TCP_UDP_CHKSUM, 1)
1441 | EHEA_BMASK_SET(PXLY_RC_VLAN_XTRACT, 1)
1442 | EHEA_BMASK_SET(PXLY_RC_VLAN_TAG_FILTER,
1443 PXLY_RC_VLAN_FILTER)
1444 | EHEA_BMASK_SET(PXLY_RC_JUMBO_FRAME, 1);
1445
18604c54
JBT		 1446 for (i = 0; i < port->num_mcs; i++)
1447 if (use_mcs)
1448 cb0->default_qpn_arr[i] =
1449 port->port_res[i].qp->init_attr.qp_nr;
1450 else
1451 cb0->default_qpn_arr[i] =
1452 port->port_res[0].qp->init_attr.qp_nr;
e542aa6b 1453
7a291083
JBT		 1454 if (netif_msg_ifup(port))
1455 ehea_dump(cb0, sizeof(*cb0), "ehea_configure_port");
1456
1457 mask = EHEA_BMASK_SET(H_PORT_CB0_PRC, 1)
1458 | EHEA_BMASK_SET(H_PORT_CB0_DEFQPNARRAY, 1);
1459
1460 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1461 port->logical_port_id,
1462 H_PORT_CB0, mask, cb0);
1463 ret = -EIO;
1464 if (hret != H_SUCCESS)
1465 goto out_free;
1466
1467 ret = 0;
1468
1469out_free:
3faf2693 1470 free_page((unsigned long)cb0);
7a291083
JBT		 1471out:
1472 return ret;
1473}
1474
e542aa6b 1475int ehea_gen_smrs(struct ehea_port_res *pr)
7a291083 1476{
e542aa6b 1477 int ret;
7a291083
JBT		 1478 struct ehea_adapter *adapter = pr->port->adapter;
1479
e542aa6b
JBT		 1480 ret = ehea_gen_smr(adapter, &adapter->mr, &pr->send_mr);
1481 if (ret)
7a291083
JBT		 1482 goto out;
1483
e542aa6b
JBT		 1484 ret = ehea_gen_smr(adapter, &adapter->mr, &pr->recv_mr);
1485 if (ret)
1486 goto out_free;
7a291083
JBT		 1487
1488 return 0;
1489
e542aa6b
JBT		 1490out_free:
1491 ehea_rem_mr(&pr->send_mr);
7a291083 1492out:
8c4877a4 1493 pr_err("Generating SMRS failed\n");
7a291083
JBT		 1494 return -EIO;
1495}
1496
e542aa6b 1497int ehea_rem_smrs(struct ehea_port_res *pr)
7a291083 1498{
8e95a202
JP		 1499 if ((ehea_rem_mr(&pr->send_mr)) ||
1500 (ehea_rem_mr(&pr->recv_mr)))
e542aa6b
JBT		 1501 return -EIO;
1502 else
1503 return 0;
7a291083
JBT		 1504}
1505
1506static int ehea_init_q_skba(struct ehea_q_skb_arr *q_skba, int max_q_entries)
1507{
508d2b5d 1508 int arr_size = sizeof(void *) * max_q_entries;
7a291083 1509
89bf67f1 1510 q_skba->arr = vzalloc(arr_size);
7a291083
JBT		 1511 if (!q_skba->arr)
1512 return -ENOMEM;
1513
7a291083
JBT		 1514 q_skba->len = max_q_entries;
1515 q_skba->index = 0;
1516 q_skba->os_skbs = 0;
1517
1518 return 0;
1519}
1520
1521static int ehea_init_port_res(struct ehea_port *port, struct ehea_port_res *pr,
1522 struct port_res_cfg *pr_cfg, int queue_token)
1523{
1524 struct ehea_adapter *adapter = port->adapter;
1525 enum ehea_eq_type eq_type = EHEA_EQ;
1526 struct ehea_qp_init_attr *init_attr = NULL;
1527 int ret = -EIO;
ce45b873
BL		 1528 u64 tx_bytes, rx_bytes, tx_packets, rx_packets;
1529
1530 tx_bytes = pr->tx_bytes;
1531 tx_packets = pr->tx_packets;
1532 rx_bytes = pr->rx_bytes;
1533 rx_packets = pr->rx_packets;
7a291083
JBT		 1534
1535 memset(pr, 0, sizeof(struct ehea_port_res));
1536
ce45b873
BL		 1537 pr->tx_bytes = rx_bytes;
1538 pr->tx_packets = tx_packets;
1539 pr->rx_bytes = rx_bytes;
1540 pr->rx_packets = rx_packets;
1541
7a291083 1542 pr->port = port;
7a291083 1543
18604c54
JBT		 1544 pr->eq = ehea_create_eq(adapter, eq_type, EHEA_MAX_ENTRIES_EQ, 0);
1545 if (!pr->eq) {
8c4877a4 1546 pr_err("create_eq failed (eq)\n");
7a291083
JBT		 1547 goto out_free;
1548 }
1549
1550 pr->recv_cq = ehea_create_cq(adapter, pr_cfg->max_entries_rcq,
18604c54 1551 pr->eq->fw_handle,
7a291083
JBT		 1552 port->logical_port_id);
1553 if (!pr->recv_cq) {
8c4877a4 1554 pr_err("create_cq failed (cq_recv)\n");
7a291083
JBT		 1555 goto out_free;
1556 }
1557
1558 pr->send_cq = ehea_create_cq(adapter, pr_cfg->max_entries_scq,
18604c54 1559 pr->eq->fw_handle,
7a291083
JBT		 1560 port->logical_port_id);
1561 if (!pr->send_cq) {
8c4877a4 1562 pr_err("create_cq failed (cq_send)\n");
7a291083
JBT		 1563 goto out_free;
1564 }
1565
1566 if (netif_msg_ifup(port))
8c4877a4
JP		 1567 pr_info("Send CQ: act_nr_cqes=%d, Recv CQ: act_nr_cqes=%d\n",
1568 pr->send_cq->attr.act_nr_of_cqes,
1569 pr->recv_cq->attr.act_nr_of_cqes);
7a291083
JBT		 1570
1571 init_attr = kzalloc(sizeof(*init_attr), GFP_KERNEL);
1572 if (!init_attr) {
1573 ret = -ENOMEM;
8c4877a4 1574 pr_err("no mem for ehea_qp_init_attr\n");
7a291083
JBT		 1575 goto out_free;
1576 }
1577
1578 init_attr->low_lat_rq1 = 1;
1579 init_attr->signalingtype = 1; /* generate CQE if specified in WQE */
1580 init_attr->rq_count = 3;
1581 init_attr->qp_token = queue_token;
1582 init_attr->max_nr_send_wqes = pr_cfg->max_entries_sq;
1583 init_attr->max_nr_rwqes_rq1 = pr_cfg->max_entries_rq1;
1584 init_attr->max_nr_rwqes_rq2 = pr_cfg->max_entries_rq2;
1585 init_attr->max_nr_rwqes_rq3 = pr_cfg->max_entries_rq3;
1586 init_attr->wqe_size_enc_sq = EHEA_SG_SQ;
1587 init_attr->wqe_size_enc_rq1 = EHEA_SG_RQ1;
1588 init_attr->wqe_size_enc_rq2 = EHEA_SG_RQ2;
1589 init_attr->wqe_size_enc_rq3 = EHEA_SG_RQ3;
1590 init_attr->rq2_threshold = EHEA_RQ2_THRESHOLD;
1591 init_attr->rq3_threshold = EHEA_RQ3_THRESHOLD;
1592 init_attr->port_nr = port->logical_port_id;
1593 init_attr->send_cq_handle = pr->send_cq->fw_handle;
1594 init_attr->recv_cq_handle = pr->recv_cq->fw_handle;
1595 init_attr->aff_eq_handle = port->qp_eq->fw_handle;
1596
1597 pr->qp = ehea_create_qp(adapter, adapter->pd, init_attr);
1598 if (!pr->qp) {
8c4877a4 1599 pr_err("create_qp failed\n");
7a291083
JBT		 1600 ret = -EIO;
1601 goto out_free;
1602 }
1603
1604 if (netif_msg_ifup(port))
8c4877a4
JP		 1605 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",
1606 init_attr->qp_nr,
1607 init_attr->act_nr_send_wqes,
1608 init_attr->act_nr_rwqes_rq1,
1609 init_attr->act_nr_rwqes_rq2,
1610 init_attr->act_nr_rwqes_rq3);
7a291083 1611
44fb3126
TK		 1612 pr->sq_skba_size = init_attr->act_nr_send_wqes + 1;
1613
1614 ret = ehea_init_q_skba(&pr->sq_skba, pr->sq_skba_size);
7a291083
JBT		 1615 ret |= ehea_init_q_skba(&pr->rq1_skba, init_attr->act_nr_rwqes_rq1 + 1);
1616 ret |= ehea_init_q_skba(&pr->rq2_skba, init_attr->act_nr_rwqes_rq2 + 1);
1617 ret |= ehea_init_q_skba(&pr->rq3_skba, init_attr->act_nr_rwqes_rq3 + 1);
1618 if (ret)
1619 goto out_free;
1620
1621 pr->swqe_refill_th = init_attr->act_nr_send_wqes / 10;
1622 if (ehea_gen_smrs(pr) != 0) {
1623 ret = -EIO;
1624 goto out_free;
1625 }
18604c54 1626
7a291083
JBT		 1627 atomic_set(&pr->swqe_avail, init_attr->act_nr_send_wqes - 1);
1628
1629 kfree(init_attr);
18604c54 1630
bea3348e 1631 netif_napi_add(pr->port->netdev, &pr->napi, ehea_poll, 64);
18604c54 1632
d4dc4ec9
JBT		 1633 pr->lro_mgr.max_aggr = pr->port->lro_max_aggr;
1634 pr->lro_mgr.max_desc = MAX_LRO_DESCRIPTORS;
1635 pr->lro_mgr.lro_arr = pr->lro_desc;
1636 pr->lro_mgr.get_skb_header = get_skb_hdr;
1637 pr->lro_mgr.features = LRO_F_NAPI | LRO_F_EXTRACT_VLAN_ID;
1638 pr->lro_mgr.dev = port->netdev;
1639 pr->lro_mgr.ip_summed = CHECKSUM_UNNECESSARY;
1640 pr->lro_mgr.ip_summed_aggr = CHECKSUM_UNNECESSARY;
1641
7a291083
JBT		 1642 ret = 0;
1643 goto out;
1644
1645out_free:
1646 kfree(init_attr);
1647 vfree(pr->sq_skba.arr);
1648 vfree(pr->rq1_skba.arr);
1649 vfree(pr->rq2_skba.arr);
1650 vfree(pr->rq3_skba.arr);
1651 ehea_destroy_qp(pr->qp);
1652 ehea_destroy_cq(pr->send_cq);
1653 ehea_destroy_cq(pr->recv_cq);
18604c54 1654 ehea_destroy_eq(pr->eq);
7a291083
JBT		 1655out:
1656 return ret;
1657}
1658
1659static int ehea_clean_portres(struct ehea_port *port, struct ehea_port_res *pr)
1660{
1661 int ret, i;
1662
357eb46d
HH		 1663 if (pr->qp)
1664 netif_napi_del(&pr->napi);
1665
7a291083
JBT		 1666 ret = ehea_destroy_qp(pr->qp);
1667
1668 if (!ret) {
1669 ehea_destroy_cq(pr->send_cq);
1670 ehea_destroy_cq(pr->recv_cq);
18604c54 1671 ehea_destroy_eq(pr->eq);
7a291083
JBT		 1672
1673 for (i = 0; i < pr->rq1_skba.len; i++)
1674 if (pr->rq1_skba.arr[i])
1675 dev_kfree_skb(pr->rq1_skba.arr[i]);
1676
1677 for (i = 0; i < pr->rq2_skba.len; i++)
1678 if (pr->rq2_skba.arr[i])
1679 dev_kfree_skb(pr->rq2_skba.arr[i]);
1680
1681 for (i = 0; i < pr->rq3_skba.len; i++)
1682 if (pr->rq3_skba.arr[i])
1683 dev_kfree_skb(pr->rq3_skba.arr[i]);
1684
1685 for (i = 0; i < pr->sq_skba.len; i++)
1686 if (pr->sq_skba.arr[i])
1687 dev_kfree_skb(pr->sq_skba.arr[i]);
1688
1689 vfree(pr->rq1_skba.arr);
1690 vfree(pr->rq2_skba.arr);
1691 vfree(pr->rq3_skba.arr);
1692 vfree(pr->sq_skba.arr);
1693 ret = ehea_rem_smrs(pr);
1694 }
1695 return ret;
1696}
1697
1698/*
1699 * The write_* functions store information in swqe which is used by
1700 * the hardware to calculate the ip/tcp/udp checksum
1701 */
1702
1703static inline void write_ip_start_end(struct ehea_swqe *swqe,
1704 const struct sk_buff *skb)
1705{
eddc9ec5 1706 swqe->ip_start = skb_network_offset(skb);
c9bdd4b5 1707 swqe->ip_end = (u8)(swqe->ip_start + ip_hdrlen(skb) - 1);
7a291083
JBT		 1708}
1709
1710static inline void write_tcp_offset_end(struct ehea_swqe *swqe,
1711 const struct sk_buff *skb)
1712{
1713 swqe->tcp_offset =
1714 (u8)(swqe->ip_end + 1 + offsetof(struct tcphdr, check));
1715
1716 swqe->tcp_end = (u16)skb->len - 1;
1717}
1718
1719static inline void write_udp_offset_end(struct ehea_swqe *swqe,
1720 const struct sk_buff *skb)
1721{
1722 swqe->tcp_offset =
1723 (u8)(swqe->ip_end + 1 + offsetof(struct udphdr, check));
1724
1725 swqe->tcp_end = (u16)skb->len - 1;
1726}
1727
1728
1729static void write_swqe2_TSO(struct sk_buff *skb,
1730 struct ehea_swqe *swqe, u32 lkey)
1731{
1732 struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry;
1733 u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0];
e743d313 1734 int skb_data_size = skb_headlen(skb);
7a291083 1735 int headersize;
7a291083
JBT		 1736
1737 /* Packet is TCP with TSO enabled */
1738 swqe->tx_control |= EHEA_SWQE_TSO;
1739 swqe->mss = skb_shinfo(skb)->gso_size;
1740 /* copy only eth/ip/tcp headers to immediate data and
1741 * the rest of skb->data to sg1entry
1742 */
ab6a5bb6 1743 headersize = ETH_HLEN + ip_hdrlen(skb) + tcp_hdrlen(skb);
7a291083 1744
e743d313 1745 skb_data_size = skb_headlen(skb);
7a291083
JBT		 1746
1747 if (skb_data_size >= headersize) {
1748 /* copy immediate data */
d626f62b 1749 skb_copy_from_linear_data(skb, imm_data, headersize);
7a291083
JBT		 1750 swqe->immediate_data_length = headersize;
1751
1752 if (skb_data_size > headersize) {
1753 /* set sg1entry data */
1754 sg1entry->l_key = lkey;
1755 sg1entry->len = skb_data_size - headersize;
44a5b3d5
TK		 1756 sg1entry->vaddr =
1757 ehea_map_vaddr(skb->data + headersize);
7a291083
JBT		 1758 swqe->descriptors++;
1759 }
1760 } else
8c4877a4 1761 pr_err("cannot handle fragmented headers\n");
7a291083
JBT		 1762}
1763
1764static void write_swqe2_nonTSO(struct sk_buff *skb,
1765 struct ehea_swqe *swqe, u32 lkey)
1766{
e743d313 1767 int skb_data_size = skb_headlen(skb);
7a291083
JBT		 1768 u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0];
1769 struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry;
7a291083
JBT		 1770
1771 /* Packet is any nonTSO type
1772 *
1773 * Copy as much as possible skb->data to immediate data and
1774 * the rest to sg1entry
1775 */
1776 if (skb_data_size >= SWQE2_MAX_IMM) {
1777 /* copy immediate data */
d626f62b 1778 skb_copy_from_linear_data(skb, imm_data, SWQE2_MAX_IMM);
7a291083
JBT		 1779
1780 swqe->immediate_data_length = SWQE2_MAX_IMM;
1781
1782 if (skb_data_size > SWQE2_MAX_IMM) {
1783 /* copy sg1entry data */
1784 sg1entry->l_key = lkey;
1785 sg1entry->len = skb_data_size - SWQE2_MAX_IMM;
44a5b3d5
TK		 1786 sg1entry->vaddr =
1787 ehea_map_vaddr(skb->data + SWQE2_MAX_IMM);
7a291083
JBT		 1788 swqe->descriptors++;
1789 }
1790 } else {
d626f62b 1791 skb_copy_from_linear_data(skb, imm_data, skb_data_size);
7a291083
JBT		 1792 swqe->immediate_data_length = skb_data_size;
1793 }
1794}
1795
1796static inline void write_swqe2_data(struct sk_buff *skb, struct net_device *dev,
1797 struct ehea_swqe *swqe, u32 lkey)
1798{
1799 struct ehea_vsgentry *sg_list, *sg1entry, *sgentry;
1800 skb_frag_t *frag;
1801 int nfrags, sg1entry_contains_frag_data, i;
7a291083
JBT		 1802
1803 nfrags = skb_shinfo(skb)->nr_frags;
1804 sg1entry = &swqe->u.immdata_desc.sg_entry;
508d2b5d 1805 sg_list = (struct ehea_vsgentry *)&swqe->u.immdata_desc.sg_list;
7a291083
JBT		 1806 swqe->descriptors = 0;
1807 sg1entry_contains_frag_data = 0;
1808
1809 if ((dev->features & NETIF_F_TSO) && skb_shinfo(skb)->gso_size)
1810 write_swqe2_TSO(skb, swqe, lkey);
1811 else
1812 write_swqe2_nonTSO(skb, swqe, lkey);
1813
1814 /* write descriptors */
1815 if (nfrags > 0) {
1816 if (swqe->descriptors == 0) {
1817 /* sg1entry not yet used */
1818 frag = &skb_shinfo(skb)->frags[0];
1819
1820 /* copy sg1entry data */
1821 sg1entry->l_key = lkey;
1822 sg1entry->len = frag->size;
44a5b3d5 1823 sg1entry->vaddr =
618c4a0a 1824 ehea_map_vaddr(skb_frag_address(frag));
7a291083
JBT		 1825 swqe->descriptors++;
1826 sg1entry_contains_frag_data = 1;
1827 }
1828
1829 for (i = sg1entry_contains_frag_data; i < nfrags; i++) {
1830
1831 frag = &skb_shinfo(skb)->frags[i];
1832 sgentry = &sg_list[i - sg1entry_contains_frag_data];
1833
1834 sgentry->l_key = lkey;
1835 sgentry->len = frag->size;
618c4a0a 1836 sgentry->vaddr = ehea_map_vaddr(skb_frag_address(frag));
7a291083
JBT		 1837 swqe->descriptors++;
1838 }
1839 }
1840}
1841
1842static int ehea_broadcast_reg_helper(struct ehea_port *port, u32 hcallid)
1843{
1844 int ret = 0;
1845 u64 hret;
1846 u8 reg_type;
1847
1848 /* De/Register untagged packets */
1849 reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_UNTAGGED;
1850 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1851 port->logical_port_id,
1852 reg_type, port->mac_addr, 0, hcallid);
1853 if (hret != H_SUCCESS) {
8c4877a4
JP		 1854 pr_err("%sregistering bc address failed (tagged)\n",
1855 hcallid == H_REG_BCMC ? "" : "de");
7a291083
JBT		 1856 ret = -EIO;
1857 goto out_herr;
1858 }
1859
1860 /* De/Register VLAN packets */
1861 reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_VLANID_ALL;
1862 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1863 port->logical_port_id,
1864 reg_type, port->mac_addr, 0, hcallid);
1865 if (hret != H_SUCCESS) {
8c4877a4
JP		 1866 pr_err("%sregistering bc address failed (vlan)\n",
1867 hcallid == H_REG_BCMC ? "" : "de");
7a291083
JBT		 1868 ret = -EIO;
1869 }
1870out_herr:
1871 return ret;
1872}
1873
1874static int ehea_set_mac_addr(struct net_device *dev, void *sa)
1875{
1876 struct ehea_port *port = netdev_priv(dev);
1877 struct sockaddr *mac_addr = sa;
1878 struct hcp_ehea_port_cb0 *cb0;
1879 int ret;
1880 u64 hret;
1881
1882 if (!is_valid_ether_addr(mac_addr->sa_data)) {
1883 ret = -EADDRNOTAVAIL;
1884 goto out;
1885 }
1886
3faf2693 1887 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083 1888 if (!cb0) {
8c4877a4 1889 pr_err("no mem for cb0\n");
7a291083
JBT		 1890 ret = -ENOMEM;
1891 goto out;
1892 }
1893
1894 memcpy(&(cb0->port_mac_addr), &(mac_addr->sa_data[0]), ETH_ALEN);
1895
1896 cb0->port_mac_addr = cb0->port_mac_addr >> 16;
1897
1898 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1899 port->logical_port_id, H_PORT_CB0,
1900 EHEA_BMASK_SET(H_PORT_CB0_MAC, 1), cb0);
1901 if (hret != H_SUCCESS) {
1902 ret = -EIO;
1903 goto out_free;
1904 }
1905
1906 memcpy(dev->dev_addr, mac_addr->sa_data, dev->addr_len);
1907
1908 /* Deregister old MAC in pHYP */
00aaea2f
JBT		 1909 if (port->state == EHEA_PORT_UP) {
1910 ret = ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
1911 if (ret)
1912 goto out_upregs;
1913 }
7a291083
JBT		 1914
1915 port->mac_addr = cb0->port_mac_addr << 16;
1916
1917 /* Register new MAC in pHYP */
00aaea2f
JBT		 1918 if (port->state == EHEA_PORT_UP) {
1919 ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
1920 if (ret)
1921 goto out_upregs;
1922 }
7a291083
JBT		 1923
1924 ret = 0;
21eee2dd
TK		 1925
1926out_upregs:
1927 ehea_update_bcmc_registrations();
7a291083 1928out_free:
3faf2693 1929 free_page((unsigned long)cb0);
7a291083
JBT		 1930out:
1931 return ret;
1932}
1933
1934static void ehea_promiscuous_error(u64 hret, int enable)
1935{
7674a588 1936 if (hret == H_AUTHORITY)
8c4877a4
JP		 1937 pr_info("Hypervisor denied %sabling promiscuous mode\n",
1938 enable == 1 ? "en" : "dis");
7674a588 1939 else
8c4877a4
JP		 1940 pr_err("failed %sabling promiscuous mode\n",
1941 enable == 1 ? "en" : "dis");
7a291083
JBT		 1942}
1943
1944static void ehea_promiscuous(struct net_device *dev, int enable)
1945{
1946 struct ehea_port *port = netdev_priv(dev);
1947 struct hcp_ehea_port_cb7 *cb7;
1948 u64 hret;
1949
aa3bc6c6 1950 if (enable == port->promisc)
7a291083
JBT		 1951 return;
1952
3faf2693 1953 cb7 = (void *)get_zeroed_page(GFP_ATOMIC);
7a291083 1954 if (!cb7) {
8c4877a4 1955 pr_err("no mem for cb7\n");
7a291083
JBT		 1956 goto out;
1957 }
1958
1959 /* Modify Pxs_DUCQPN in CB7 */
1960 cb7->def_uc_qpn = enable == 1 ? port->port_res[0].qp->fw_handle : 0;
1961
1962 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1963 port->logical_port_id,
1964 H_PORT_CB7, H_PORT_CB7_DUCQPN, cb7);
1965 if (hret) {
1966 ehea_promiscuous_error(hret, enable);
1967 goto out;
1968 }
1969
1970 port->promisc = enable;
1971out:
3faf2693 1972 free_page((unsigned long)cb7);
7a291083
JBT		 1973}
1974
1975static u64 ehea_multicast_reg_helper(struct ehea_port *port, u64 mc_mac_addr,
1976 u32 hcallid)
1977{
1978 u64 hret;
1979 u8 reg_type;
1980
1981 reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST
1982 | EHEA_BCMC_UNTAGGED;
1983
1984 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1985 port->logical_port_id,
1986 reg_type, mc_mac_addr, 0, hcallid);
1987 if (hret)
1988 goto out;
1989
1990 reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST
1991 | EHEA_BCMC_VLANID_ALL;
1992
1993 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1994 port->logical_port_id,
1995 reg_type, mc_mac_addr, 0, hcallid);
1996out:
1997 return hret;
1998}
1999
2000static int ehea_drop_multicast_list(struct net_device *dev)
2001{
2002 struct ehea_port *port = netdev_priv(dev);
2003 struct ehea_mc_list *mc_entry = port->mc_list;
2004 struct list_head *pos;
2005 struct list_head *temp;
2006 int ret = 0;
2007 u64 hret;
2008
2009 list_for_each_safe(pos, temp, &(port->mc_list->list)) {
2010 mc_entry = list_entry(pos, struct ehea_mc_list, list);
2011
2012 hret = ehea_multicast_reg_helper(port, mc_entry->macaddr,
2013 H_DEREG_BCMC);
2014 if (hret) {
8c4877a4 2015 pr_err("failed deregistering mcast MAC\n");
7a291083
JBT		 2016 ret = -EIO;
2017 }
2018
2019 list_del(pos);
2020 kfree(mc_entry);
2021 }
2022 return ret;
2023}
2024
2025static void ehea_allmulti(struct net_device *dev, int enable)
2026{
2027 struct ehea_port *port = netdev_priv(dev);
2028 u64 hret;
2029
2030 if (!port->allmulti) {
2031 if (enable) {
2032 /* Enable ALLMULTI */
2033 ehea_drop_multicast_list(dev);
2034 hret = ehea_multicast_reg_helper(port, 0, H_REG_BCMC);
2035 if (!hret)
2036 port->allmulti = 1;
2037 else
8c4877a4
JP		 2038 netdev_err(dev,
2039 "failed enabling IFF_ALLMULTI\n");
7a291083
JBT		 2040 }
2041 } else
2042 if (!enable) {
2043 /* Disable ALLMULTI */
2044 hret = ehea_multicast_reg_helper(port, 0, H_DEREG_BCMC);
2045 if (!hret)
2046 port->allmulti = 0;
2047 else
8c4877a4
JP		 2048 netdev_err(dev,
2049 "failed disabling IFF_ALLMULTI\n");
7a291083
JBT		 2050 }
2051}
2052
508d2b5d 2053static void ehea_add_multicast_entry(struct ehea_port *port, u8 *mc_mac_addr)
7a291083
JBT		 2054{
2055 struct ehea_mc_list *ehea_mcl_entry;
2056 u64 hret;
2057
1e1675cc 2058 ehea_mcl_entry = kzalloc(sizeof(*ehea_mcl_entry), GFP_ATOMIC);
7a291083 2059 if (!ehea_mcl_entry) {
8c4877a4 2060 pr_err("no mem for mcl_entry\n");
7a291083
JBT		 2061 return;
2062 }
2063
2064 INIT_LIST_HEAD(&ehea_mcl_entry->list);
2065
2066 memcpy(&ehea_mcl_entry->macaddr, mc_mac_addr, ETH_ALEN);
2067
2068 hret = ehea_multicast_reg_helper(port, ehea_mcl_entry->macaddr,
2069 H_REG_BCMC);
2070 if (!hret)
2071 list_add(&ehea_mcl_entry->list, &port->mc_list->list);
2072 else {
8c4877a4 2073 pr_err("failed registering mcast MAC\n");
7a291083
JBT		 2074 kfree(ehea_mcl_entry);
2075 }
2076}
2077
2078static void ehea_set_multicast_list(struct net_device *dev)
2079{
2080 struct ehea_port *port = netdev_priv(dev);
22bedad3 2081 struct netdev_hw_addr *ha;
48e2f183 2082 int ret;
7a291083 2083
a4910b74 2084 if (port->promisc) {
7a291083
JBT		 2085 ehea_promiscuous(dev, 1);
2086 return;
2087 }
2088 ehea_promiscuous(dev, 0);
2089
2090 if (dev->flags & IFF_ALLMULTI) {
2091 ehea_allmulti(dev, 1);
21eee2dd 2092 goto out;
7a291083
JBT		 2093 }
2094 ehea_allmulti(dev, 0);
2095
4cd24eaf 2096 if (!netdev_mc_empty(dev)) {
7a291083
JBT		 2097 ret = ehea_drop_multicast_list(dev);
2098 if (ret) {
2099 /* Dropping the current multicast list failed.
2100 * Enabling ALL_MULTI is the best we can do.
2101 */
2102 ehea_allmulti(dev, 1);
2103 }
2104
4cd24eaf 2105 if (netdev_mc_count(dev) > port->adapter->max_mc_mac) {
8c4877a4
JP		 2106 pr_info("Mcast registration limit reached (0x%llx). Use ALLMULTI!\n",
2107 port->adapter->max_mc_mac);
7a291083
JBT		 2108 goto out;
2109 }
2110
22bedad3
JP		 2111 netdev_for_each_mc_addr(ha, dev)
2112 ehea_add_multicast_entry(port, ha->addr);
508d2b5d 2113
7a291083
JBT		 2114 }
2115out:
21eee2dd 2116 ehea_update_bcmc_registrations();
7a291083
JBT		 2117}
2118
2119static int ehea_change_mtu(struct net_device *dev, int new_mtu)
2120{
2121 if ((new_mtu < 68) || (new_mtu > EHEA_MAX_PACKET_SIZE))
2122 return -EINVAL;
2123 dev->mtu = new_mtu;
2124 return 0;
2125}
2126
2127static void ehea_xmit2(struct sk_buff *skb, struct net_device *dev,
2128 struct ehea_swqe *swqe, u32 lkey)
2129{
2130 if (skb->protocol == htons(ETH_P_IP)) {
eddc9ec5 2131 const struct iphdr *iph = ip_hdr(skb);
d1d25aab 2132
7a291083
JBT		 2133 /* IPv4 */
2134 swqe->tx_control |= EHEA_SWQE_CRC
2135 | EHEA_SWQE_IP_CHECKSUM
2136 | EHEA_SWQE_TCP_CHECKSUM
2137 | EHEA_SWQE_IMM_DATA_PRESENT
2138 | EHEA_SWQE_DESCRIPTORS_PRESENT;
2139
2140 write_ip_start_end(swqe, skb);
2141
eddc9ec5 2142 if (iph->protocol == IPPROTO_UDP) {
8e95a202
JP		 2143 if ((iph->frag_off & IP_MF) ||
2144 (iph->frag_off & IP_OFFSET))
7a291083
JBT		 2145 /* IP fragment, so don't change cs */
2146 swqe->tx_control &= ~EHEA_SWQE_TCP_CHECKSUM;
2147 else
2148 write_udp_offset_end(swqe, skb);
eddc9ec5 2149 } else if (iph->protocol == IPPROTO_TCP) {
7a291083
JBT		 2150 write_tcp_offset_end(swqe, skb);
2151 }
2152
2153 /* icmp (big data) and ip segmentation packets (all other ip
2154 packets) do not require any special handling */
2155
2156 } else {
2157 /* Other Ethernet Protocol */
2158 swqe->tx_control |= EHEA_SWQE_CRC
2159 | EHEA_SWQE_IMM_DATA_PRESENT
2160 | EHEA_SWQE_DESCRIPTORS_PRESENT;
2161 }
2162
2163 write_swqe2_data(skb, dev, swqe, lkey);
2164}
2165
2166static void ehea_xmit3(struct sk_buff *skb, struct net_device *dev,
2167 struct ehea_swqe *swqe)
2168{
2169 int nfrags = skb_shinfo(skb)->nr_frags;
2170 u8 *imm_data = &swqe->u.immdata_nodesc.immediate_data[0];
2171 skb_frag_t *frag;
2172 int i;
2173
2174 if (skb->protocol == htons(ETH_P_IP)) {
eddc9ec5 2175 const struct iphdr *iph = ip_hdr(skb);
d1d25aab 2176
7a291083
JBT		 2177 /* IPv4 */
2178 write_ip_start_end(swqe, skb);
2179
eddc9ec5 2180 if (iph->protocol == IPPROTO_TCP) {
7a291083
JBT		 2181 swqe->tx_control |= EHEA_SWQE_CRC
2182 | EHEA_SWQE_IP_CHECKSUM
2183 | EHEA_SWQE_TCP_CHECKSUM
2184 | EHEA_SWQE_IMM_DATA_PRESENT;
2185
2186 write_tcp_offset_end(swqe, skb);
2187
eddc9ec5 2188 } else if (iph->protocol == IPPROTO_UDP) {
8e95a202
JP		 2189 if ((iph->frag_off & IP_MF) ||
2190 (iph->frag_off & IP_OFFSET))
7a291083
JBT		 2191 /* IP fragment, so don't change cs */
2192 swqe->tx_control |= EHEA_SWQE_CRC
2193 | EHEA_SWQE_IMM_DATA_PRESENT;
2194 else {
2195 swqe->tx_control |= EHEA_SWQE_CRC
2196 | EHEA_SWQE_IP_CHECKSUM
2197 | EHEA_SWQE_TCP_CHECKSUM
2198 | EHEA_SWQE_IMM_DATA_PRESENT;
2199
2200 write_udp_offset_end(swqe, skb);
2201 }
2202 } else {
2203 /* icmp (big data) and
2204 ip segmentation packets (all other ip packets) */
2205 swqe->tx_control |= EHEA_SWQE_CRC
2206 | EHEA_SWQE_IP_CHECKSUM
2207 | EHEA_SWQE_IMM_DATA_PRESENT;
2208 }
2209 } else {
2210 /* Other Ethernet Protocol */
2211 swqe->tx_control |= EHEA_SWQE_CRC | EHEA_SWQE_IMM_DATA_PRESENT;
2212 }
2213 /* copy (immediate) data */
2214 if (nfrags == 0) {
2215 /* data is in a single piece */
d626f62b 2216 skb_copy_from_linear_data(skb, imm_data, skb->len);
7a291083
JBT		 2217 } else {
2218 /* first copy data from the skb->data buffer ... */
d626f62b 2219 skb_copy_from_linear_data(skb, imm_data,
e743d313
ED		 2220 skb_headlen(skb));
2221 imm_data += skb_headlen(skb);
7a291083
JBT		 2222
2223 /* ... then copy data from the fragments */
2224 for (i = 0; i < nfrags; i++) {
2225 frag = &skb_shinfo(skb)->frags[i];
618c4a0a 2226 memcpy(imm_data, skb_frag_address(frag), frag->size);
7a291083
JBT		 2227 imm_data += frag->size;
2228 }
2229 }
2230 swqe->immediate_data_length = skb->len;
2231 dev_kfree_skb(skb);
2232}
2233
2234static int ehea_start_xmit(struct sk_buff *skb, struct net_device *dev)
2235{
2236 struct ehea_port *port = netdev_priv(dev);
2237 struct ehea_swqe *swqe;
7a291083
JBT		 2238 u32 lkey;
2239 int swqe_index;
18604c54 2240 struct ehea_port_res *pr;
b9564468 2241 struct netdev_queue *txq;
18604c54 2242
b9564468
AB		 2243 pr = &port->port_res[skb_get_queue_mapping(skb)];
2244 txq = netdev_get_tx_queue(dev, skb_get_queue_mapping(skb));
18604c54 2245
7a291083
JBT		 2246 swqe = ehea_get_swqe(pr->qp, &swqe_index);
2247 memset(swqe, 0, SWQE_HEADER_SIZE);
2248 atomic_dec(&pr->swqe_avail);
2249
e5ccd961
ED		 2250 if (vlan_tx_tag_present(skb)) {
2251 swqe->tx_control |= EHEA_SWQE_VLAN_INSERT;
2252 swqe->vlan_tag = vlan_tx_tag_get(skb);
2253 }
2254
ce45b873
BL		 2255 pr->tx_packets++;
2256 pr->tx_bytes += skb->len;
2257
7a291083
JBT		 2258 if (skb->len <= SWQE3_MAX_IMM) {
2259 u32 sig_iv = port->sig_comp_iv;
2260 u32 swqe_num = pr->swqe_id_counter;
2261 ehea_xmit3(skb, dev, swqe);
2262 swqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE3_TYPE)
2263 | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, swqe_num);
2264 if (pr->swqe_ll_count >= (sig_iv - 1)) {
2265 swqe->wr_id |= EHEA_BMASK_SET(EHEA_WR_ID_REFILL,
2266 sig_iv);
2267 swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
2268 pr->swqe_ll_count = 0;
2269 } else
2270 pr->swqe_ll_count += 1;
2271 } else {
2272 swqe->wr_id =
2273 EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE2_TYPE)
2274 | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, pr->swqe_id_counter)
acbddb59 2275 | EHEA_BMASK_SET(EHEA_WR_ID_REFILL, 1)
7a291083
JBT		 2276 | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, pr->sq_skba.index);
2277 pr->sq_skba.arr[pr->sq_skba.index] = skb;
2278
2279 pr->sq_skba.index++;
2280 pr->sq_skba.index &= (pr->sq_skba.len - 1);
2281
2282 lkey = pr->send_mr.lkey;
2283 ehea_xmit2(skb, dev, swqe, lkey);
acbddb59 2284 swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
7a291083
JBT		 2285 }
2286 pr->swqe_id_counter += 1;
2287
8c4877a4
JP		 2288 netif_info(port, tx_queued, dev,
2289 "post swqe on QP %d\n", pr->qp->init_attr.qp_nr);
2290 if (netif_msg_tx_queued(port))
bff0a55f 2291 ehea_dump(swqe, 512, "swqe");
7a291083 2292
2c69448b 2293 if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) {
b9564468 2294 netif_tx_stop_queue(txq);
2c69448b
JBT		 2295 swqe->tx_control |= EHEA_SWQE_PURGE;
2296 }
44c82152 2297
7a291083 2298 ehea_post_swqe(pr->qp, swqe);
7a291083
JBT		 2299
2300 if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) {
b9564468
AB		 2301 pr->p_stats.queue_stopped++;
2302 netif_tx_stop_queue(txq);
7a291083 2303 }
2c69448b 2304
7a291083
JBT		 2305 return NETDEV_TX_OK;
2306}
2307
7a291083
JBT		 2308static void ehea_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
2309{
2310 struct ehea_port *port = netdev_priv(dev);
2311 struct ehea_adapter *adapter = port->adapter;
2312 struct hcp_ehea_port_cb1 *cb1;
2313 int index;
2314 u64 hret;
2315
3faf2693 2316 cb1 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083 2317 if (!cb1) {
8c4877a4 2318 pr_err("no mem for cb1\n");
7a291083
JBT		 2319 goto out;
2320 }
2321
2322 hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
2323 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2324 if (hret != H_SUCCESS) {
8c4877a4 2325 pr_err("query_ehea_port failed\n");
7a291083
JBT		 2326 goto out;
2327 }
2328
2329 index = (vid / 64);
dec590c1 2330 cb1->vlan_filter[index] |= ((u64)(0x8000000000000000 >> (vid & 0x3F)));
7a291083
JBT		 2331
2332 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
2333 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2334 if (hret != H_SUCCESS)
8c4877a4 2335 pr_err("modify_ehea_port failed\n");
7a291083 2336out:
3faf2693 2337 free_page((unsigned long)cb1);
7a291083
JBT		 2338 return;
2339}
2340
2341static void ehea_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
2342{
2343 struct ehea_port *port = netdev_priv(dev);
2344 struct ehea_adapter *adapter = port->adapter;
2345 struct hcp_ehea_port_cb1 *cb1;
2346 int index;
2347 u64 hret;
2348
3faf2693 2349 cb1 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083 2350 if (!cb1) {
8c4877a4 2351 pr_err("no mem for cb1\n");
7a291083
JBT		 2352 goto out;
2353 }
2354
2355 hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
2356 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2357 if (hret != H_SUCCESS) {
8c4877a4 2358 pr_err("query_ehea_port failed\n");
7a291083
JBT		 2359 goto out;
2360 }
2361
2362 index = (vid / 64);
dec590c1 2363 cb1->vlan_filter[index] &= ~((u64)(0x8000000000000000 >> (vid & 0x3F)));
7a291083
JBT		 2364
2365 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
2366 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2367 if (hret != H_SUCCESS)
8c4877a4 2368 pr_err("modify_ehea_port failed\n");
7a291083 2369out:
3faf2693 2370 free_page((unsigned long)cb1);
7a291083
JBT		 2371}
2372
2373int ehea_activate_qp(struct ehea_adapter *adapter, struct ehea_qp *qp)
2374{
2375 int ret = -EIO;
2376 u64 hret;
2377 u16 dummy16 = 0;
2378 u64 dummy64 = 0;
508d2b5d 2379 struct hcp_modify_qp_cb0 *cb0;
7a291083 2380
3faf2693 2381 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083
JBT		 2382 if (!cb0) {
2383 ret = -ENOMEM;
2384 goto out;
2385 }
2386
2387 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2388 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2389 if (hret != H_SUCCESS) {
8c4877a4 2390 pr_err("query_ehea_qp failed (1)\n");
7a291083
JBT		 2391 goto out;
2392 }
2393
2394 cb0->qp_ctl_reg = H_QP_CR_STATE_INITIALIZED;
2395 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2396 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2397 &dummy64, &dummy64, &dummy16, &dummy16);
2398 if (hret != H_SUCCESS) {
8c4877a4 2399 pr_err("modify_ehea_qp failed (1)\n");
7a291083
JBT		 2400 goto out;
2401 }
2402
2403 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2404 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2405 if (hret != H_SUCCESS) {
8c4877a4 2406 pr_err("query_ehea_qp failed (2)\n");
7a291083
JBT		 2407 goto out;
2408 }
2409
2410 cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_INITIALIZED;
2411 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2412 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2413 &dummy64, &dummy64, &dummy16, &dummy16);
2414 if (hret != H_SUCCESS) {
8c4877a4 2415 pr_err("modify_ehea_qp failed (2)\n");
7a291083
JBT		 2416 goto out;
2417 }
2418
2419 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2420 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2421 if (hret != H_SUCCESS) {
8c4877a4 2422 pr_err("query_ehea_qp failed (3)\n");
7a291083
JBT		 2423 goto out;
2424 }
2425
2426 cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_RDY2SND;
2427 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2428 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2429 &dummy64, &dummy64, &dummy16, &dummy16);
2430 if (hret != H_SUCCESS) {
8c4877a4 2431 pr_err("modify_ehea_qp failed (3)\n");
7a291083
JBT		 2432 goto out;
2433 }
2434
2435 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2436 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2437 if (hret != H_SUCCESS) {
8c4877a4 2438 pr_err("query_ehea_qp failed (4)\n");
7a291083
JBT		 2439 goto out;
2440 }
2441
2442 ret = 0;
2443out:
3faf2693 2444 free_page((unsigned long)cb0);
7a291083
JBT		 2445 return ret;
2446}
2447
2448static int ehea_port_res_setup(struct ehea_port *port, int def_qps,
2449 int add_tx_qps)
2450{
2451 int ret, i;
2452 struct port_res_cfg pr_cfg, pr_cfg_small_rx;
2453 enum ehea_eq_type eq_type = EHEA_EQ;
2454
2455 port->qp_eq = ehea_create_eq(port->adapter, eq_type,
2456 EHEA_MAX_ENTRIES_EQ, 1);
2457 if (!port->qp_eq) {
2458 ret = -EINVAL;
8c4877a4 2459 pr_err("ehea_create_eq failed (qp_eq)\n");
7a291083
JBT		 2460 goto out_kill_eq;
2461 }
2462
2463 pr_cfg.max_entries_rcq = rq1_entries + rq2_entries + rq3_entries;
18604c54 2464 pr_cfg.max_entries_scq = sq_entries * 2;
7a291083
JBT		 2465 pr_cfg.max_entries_sq = sq_entries;
2466 pr_cfg.max_entries_rq1 = rq1_entries;
2467 pr_cfg.max_entries_rq2 = rq2_entries;
2468 pr_cfg.max_entries_rq3 = rq3_entries;
2469
2470 pr_cfg_small_rx.max_entries_rcq = 1;
2471 pr_cfg_small_rx.max_entries_scq = sq_entries;
2472 pr_cfg_small_rx.max_entries_sq = sq_entries;
2473 pr_cfg_small_rx.max_entries_rq1 = 1;
2474 pr_cfg_small_rx.max_entries_rq2 = 1;
2475 pr_cfg_small_rx.max_entries_rq3 = 1;
2476
2477 for (i = 0; i < def_qps; i++) {
2478 ret = ehea_init_port_res(port, &port->port_res[i], &pr_cfg, i);
2479 if (ret)
2480 goto out_clean_pr;
2481 }
2482 for (i = def_qps; i < def_qps + add_tx_qps; i++) {
2483 ret = ehea_init_port_res(port, &port->port_res[i],
2484 &pr_cfg_small_rx, i);
2485 if (ret)
2486 goto out_clean_pr;
2487 }
2488
2489 return 0;
2490
2491out_clean_pr:
2492 while (--i >= 0)
2493 ehea_clean_portres(port, &port->port_res[i]);
2494
2495out_kill_eq:
2496 ehea_destroy_eq(port->qp_eq);
2497 return ret;
2498}
2499
2500static int ehea_clean_all_portres(struct ehea_port *port)
2501{
2502 int ret = 0;
2503 int i;
2504
508d2b5d 2505 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
7a291083
JBT		 2506 ret |= ehea_clean_portres(port, &port->port_res[i]);
2507
2508 ret |= ehea_destroy_eq(port->qp_eq);
2509
2510 return ret;
2511}
2512
35cf2e2e 2513static void ehea_remove_adapter_mr(struct ehea_adapter *adapter)
1211bb6d 2514{
35cf2e2e
TK		 2515 if (adapter->active_ports)
2516 return;
1211bb6d
TK		 2517
2518 ehea_rem_mr(&adapter->mr);
2519}
2520
35cf2e2e 2521static int ehea_add_adapter_mr(struct ehea_adapter *adapter)
1211bb6d 2522{
35cf2e2e
TK		 2523 if (adapter->active_ports)
2524 return 0;
1211bb6d
TK		 2525
2526 return ehea_reg_kernel_mr(adapter, &adapter->mr);
2527}
2528
7a291083
JBT		 2529static int ehea_up(struct net_device *dev)
2530{
2531 int ret, i;
2532 struct ehea_port *port = netdev_priv(dev);
7a291083
JBT		 2533
2534 if (port->state == EHEA_PORT_UP)
2535 return 0;
2536
2537 ret = ehea_port_res_setup(port, port->num_def_qps,
2538 port->num_add_tx_qps);
2539 if (ret) {
8c4877a4 2540 netdev_err(dev, "port_res_failed\n");
7a291083
JBT		 2541 goto out;
2542 }
2543
2544 /* Set default QP for this port */
2545 ret = ehea_configure_port(port);
2546 if (ret) {
8c4877a4 2547 netdev_err(dev, "ehea_configure_port failed. ret:%d\n", ret);
7a291083
JBT		 2548 goto out_clean_pr;
2549 }
2550
7a291083
JBT		 2551 ret = ehea_reg_interrupts(dev);
2552 if (ret) {
8c4877a4 2553 netdev_err(dev, "reg_interrupts failed. ret:%d\n", ret);
f9e29228 2554 goto out_clean_pr;
7a291083
JBT		 2555 }
2556
508d2b5d 2557 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
7a291083
JBT		 2558 ret = ehea_activate_qp(port->adapter, port->port_res[i].qp);
2559 if (ret) {
8c4877a4 2560 netdev_err(dev, "activate_qp failed\n");
7a291083
JBT		 2561 goto out_free_irqs;
2562 }
2563 }
2564
508d2b5d 2565 for (i = 0; i < port->num_def_qps; i++) {
7a291083
JBT		 2566 ret = ehea_fill_port_res(&port->port_res[i]);
2567 if (ret) {
8c4877a4 2568 netdev_err(dev, "out_free_irqs\n");
7a291083
JBT		 2569 goto out_free_irqs;
2570 }
2571 }
2572
21eee2dd
TK		 2573 ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
2574 if (ret) {
2575 ret = -EIO;
2576 goto out_free_irqs;
2577 }
2578
7a291083 2579 port->state = EHEA_PORT_UP;
21eee2dd
TK		 2580
2581 ret = 0;
7a291083
JBT		 2582 goto out;
2583
2584out_free_irqs:
2585 ehea_free_interrupts(dev);
2586
7a291083
JBT		 2587out_clean_pr:
2588 ehea_clean_all_portres(port);
2589out:
44c82152 2590 if (ret)
8c4877a4 2591 netdev_info(dev, "Failed starting. ret=%i\n", ret);
44c82152 2592
21eee2dd 2593 ehea_update_bcmc_registrations();
21eee2dd 2594 ehea_update_firmware_handles();
21eee2dd 2595
7a291083
JBT		 2596 return ret;
2597}
2598
bea3348e
SH		 2599static void port_napi_disable(struct ehea_port *port)
2600{
2601 int i;
2602
0173b793 2603 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
bea3348e
SH		 2604 napi_disable(&port->port_res[i].napi);
2605}
2606
2607static void port_napi_enable(struct ehea_port *port)
2608{
2609 int i;
2610
0173b793 2611 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
bea3348e
SH		 2612 napi_enable(&port->port_res[i].napi);
2613}
2614
7a291083
JBT		 2615static int ehea_open(struct net_device *dev)
2616{
2617 int ret;
2618 struct ehea_port *port = netdev_priv(dev);
2619
a5af6ad3 2620 mutex_lock(&port->port_lock);
7a291083 2621
8c4877a4 2622 netif_info(port, ifup, dev, "enabling port\n");
7a291083
JBT		 2623
2624 ret = ehea_up(dev);
bea3348e
SH		 2625 if (!ret) {
2626 port_napi_enable(port);
b9564468 2627 netif_tx_start_all_queues(dev);
bea3348e 2628 }
7a291083 2629
a5af6ad3 2630 mutex_unlock(&port->port_lock);
2aefcad8 2631 schedule_delayed_work(&port->stats_work, msecs_to_jiffies(1000));
7a291083
JBT		 2632
2633 return ret;
2634}
2635
2636static int ehea_down(struct net_device *dev)
2637{
bea3348e 2638 int ret;
7a291083
JBT		 2639 struct ehea_port *port = netdev_priv(dev);
2640
2641 if (port->state == EHEA_PORT_DOWN)
2642 return 0;
2643
2644 ehea_drop_multicast_list(dev);
21eee2dd
TK		 2645 ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
2646
7a291083
JBT		 2647 ehea_free_interrupts(dev);
2648
7a291083 2649 port->state = EHEA_PORT_DOWN;
44c82152 2650
21eee2dd 2651 ehea_update_bcmc_registrations();
21eee2dd 2652
44c82152
TK		 2653 ret = ehea_clean_all_portres(port);
2654 if (ret)
8c4877a4 2655 netdev_info(dev, "Failed freeing resources. ret=%i\n", ret);
44c82152 2656
21eee2dd 2657 ehea_update_firmware_handles();
21eee2dd 2658
7a291083
JBT		 2659 return ret;
2660}
2661
2662static int ehea_stop(struct net_device *dev)
2663{
2664 int ret;
2665 struct ehea_port *port = netdev_priv(dev);
2666
8c4877a4 2667 netif_info(port, ifdown, dev, "disabling port\n");
7a291083 2668
2f69ae01 2669 set_bit(__EHEA_DISABLE_PORT_RESET, &port->flags);
4bb073c0 2670 cancel_work_sync(&port->reset_task);
2aefcad8 2671 cancel_delayed_work_sync(&port->stats_work);
a5af6ad3 2672 mutex_lock(&port->port_lock);
b9564468 2673 netif_tx_stop_all_queues(dev);
0173b793 2674 port_napi_disable(port);
7a291083 2675 ret = ehea_down(dev);
a5af6ad3 2676 mutex_unlock(&port->port_lock);
2f69ae01 2677 clear_bit(__EHEA_DISABLE_PORT_RESET, &port->flags);
7a291083
JBT		 2678 return ret;
2679}
2680
22559c5d 2681static void ehea_purge_sq(struct ehea_qp *orig_qp)
2c69448b
JBT		 2682{
2683 struct ehea_qp qp = *orig_qp;
2684 struct ehea_qp_init_attr *init_attr = &qp.init_attr;
2685 struct ehea_swqe *swqe;
2686 int wqe_index;
2687 int i;
2688
2689 for (i = 0; i < init_attr->act_nr_send_wqes; i++) {
2690 swqe = ehea_get_swqe(&qp, &wqe_index);
2691 swqe->tx_control |= EHEA_SWQE_PURGE;
2692 }
2693}
2694
22559c5d 2695static void ehea_flush_sq(struct ehea_port *port)
44fb3126
TK		 2696{
2697 int i;
2698
2699 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
2700 struct ehea_port_res *pr = &port->port_res[i];
2701 int swqe_max = pr->sq_skba_size - 2 - pr->swqe_ll_count;
5b27d427
BL		 2702 int ret;
2703
2704 ret = wait_event_timeout(port->swqe_avail_wq,
2705 atomic_read(&pr->swqe_avail) >= swqe_max,
2706 msecs_to_jiffies(100));
2707
2708 if (!ret) {
8c4877a4 2709 pr_err("WARNING: sq not flushed completely\n");
5b27d427 2710 break;
44fb3126
TK		 2711 }
2712 }
2713}
2714
2c69448b
JBT		 2715int ehea_stop_qps(struct net_device *dev)
2716{
2717 struct ehea_port *port = netdev_priv(dev);
2718 struct ehea_adapter *adapter = port->adapter;
508d2b5d 2719 struct hcp_modify_qp_cb0 *cb0;
2c69448b
JBT		 2720 int ret = -EIO;
2721 int dret;
2722 int i;
2723 u64 hret;
2724 u64 dummy64 = 0;
2725 u16 dummy16 = 0;
2726
3faf2693 2727 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
2c69448b
JBT		 2728 if (!cb0) {
2729 ret = -ENOMEM;
2730 goto out;
2731 }
2732
2733 for (i = 0; i < (port->num_def_qps + port->num_add_tx_qps); i++) {
2734 struct ehea_port_res *pr = &port->port_res[i];
2735 struct ehea_qp *qp = pr->qp;
2736
2737 /* Purge send queue */
2738 ehea_purge_sq(qp);
2739
2740 /* Disable queue pair */
2741 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2742 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2743 cb0);
2744 if (hret != H_SUCCESS) {
8c4877a4 2745 pr_err("query_ehea_qp failed (1)\n");
2c69448b
JBT		 2746 goto out;
2747 }
2748
2749 cb0->qp_ctl_reg = (cb0->qp_ctl_reg & H_QP_CR_RES_STATE) << 8;
2750 cb0->qp_ctl_reg &= ~H_QP_CR_ENABLED;
2751
2752 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2753 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG,
2754 1), cb0, &dummy64,
2755 &dummy64, &dummy16, &dummy16);
2756 if (hret != H_SUCCESS) {
8c4877a4 2757 pr_err("modify_ehea_qp failed (1)\n");
2c69448b
JBT		 2758 goto out;
2759 }
2760
2761 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2762 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2763 cb0);
2764 if (hret != H_SUCCESS) {
8c4877a4 2765 pr_err("query_ehea_qp failed (2)\n");
2c69448b
JBT		 2766 goto out;
2767 }
2768
2769 /* deregister shared memory regions */
2770 dret = ehea_rem_smrs(pr);
2771 if (dret) {
8c4877a4 2772 pr_err("unreg shared memory region failed\n");
2c69448b
JBT		 2773 goto out;
2774 }
2775 }
2776
2777 ret = 0;
2778out:
3faf2693 2779 free_page((unsigned long)cb0);
2c69448b
JBT		 2780
2781 return ret;
2782}
2783
508d2b5d 2784void ehea_update_rqs(struct ehea_qp *orig_qp, struct ehea_port_res *pr)
2c69448b
JBT		 2785{
2786 struct ehea_qp qp = *orig_qp;
2787 struct ehea_qp_init_attr *init_attr = &qp.init_attr;
2788 struct ehea_rwqe *rwqe;
2789 struct sk_buff **skba_rq2 = pr->rq2_skba.arr;
2790 struct sk_buff **skba_rq3 = pr->rq3_skba.arr;
2791 struct sk_buff *skb;
2792 u32 lkey = pr->recv_mr.lkey;
2793
2794
2795 int i;
2796 int index;
2797
2798 for (i = 0; i < init_attr->act_nr_rwqes_rq2 + 1; i++) {
2799 rwqe = ehea_get_next_rwqe(&qp, 2);
2800 rwqe->sg_list[0].l_key = lkey;
2801 index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, rwqe->wr_id);
2802 skb = skba_rq2[index];
2803 if (skb)
2804 rwqe->sg_list[0].vaddr = ehea_map_vaddr(skb->data);
2805 }
2806
2807 for (i = 0; i < init_attr->act_nr_rwqes_rq3 + 1; i++) {
2808 rwqe = ehea_get_next_rwqe(&qp, 3);
2809 rwqe->sg_list[0].l_key = lkey;
2810 index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, rwqe->wr_id);
2811 skb = skba_rq3[index];
2812 if (skb)
2813 rwqe->sg_list[0].vaddr = ehea_map_vaddr(skb->data);
2814 }
2815}
2816
2817int ehea_restart_qps(struct net_device *dev)
2818{
2819 struct ehea_port *port = netdev_priv(dev);
2820 struct ehea_adapter *adapter = port->adapter;
2821 int ret = 0;
2822 int i;
2823
508d2b5d 2824 struct hcp_modify_qp_cb0 *cb0;
2c69448b
JBT		 2825 u64 hret;
2826 u64 dummy64 = 0;
2827 u16 dummy16 = 0;
2828
3faf2693 2829 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
2c69448b
JBT		 2830 if (!cb0) {
2831 ret = -ENOMEM;
2832 goto out;
2833 }
2834
2835 for (i = 0; i < (port->num_def_qps + port->num_add_tx_qps); i++) {
2836 struct ehea_port_res *pr = &port->port_res[i];
2837 struct ehea_qp *qp = pr->qp;
2838
2839 ret = ehea_gen_smrs(pr);
2840 if (ret) {
8c4877a4 2841 netdev_err(dev, "creation of shared memory regions failed\n");
2c69448b
JBT		 2842 goto out;
2843 }
2844
2845 ehea_update_rqs(qp, pr);
2846
2847 /* Enable queue pair */
2848 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2849 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2850 cb0);
2851 if (hret != H_SUCCESS) {
8c4877a4 2852 netdev_err(dev, "query_ehea_qp failed (1)\n");
2c69448b
JBT		 2853 goto out;
2854 }
2855
2856 cb0->qp_ctl_reg = (cb0->qp_ctl_reg & H_QP_CR_RES_STATE) << 8;
2857 cb0->qp_ctl_reg |= H_QP_CR_ENABLED;
2858
2859 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2860 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG,
2861 1), cb0, &dummy64,
2862 &dummy64, &dummy16, &dummy16);
2863 if (hret != H_SUCCESS) {
8c4877a4 2864 netdev_err(dev, "modify_ehea_qp failed (1)\n");
2c69448b
JBT		 2865 goto out;
2866 }
2867
2868 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2869 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2870 cb0);
2871 if (hret != H_SUCCESS) {
8c4877a4 2872 netdev_err(dev, "query_ehea_qp failed (2)\n");
2c69448b
JBT		 2873 goto out;
2874 }
2875
2876 /* refill entire queue */
2877 ehea_refill_rq1(pr, pr->rq1_skba.index, 0);
2878 ehea_refill_rq2(pr, 0);
2879 ehea_refill_rq3(pr, 0);
2880 }
2881out:
3faf2693 2882 free_page((unsigned long)cb0);
2c69448b
JBT		 2883
2884 return ret;
2885}
2886
c4028958 2887static void ehea_reset_port(struct work_struct *work)
7a291083
JBT		 2888{
2889 int ret;
c4028958
DH		 2890 struct ehea_port *port =
2891 container_of(work, struct ehea_port, reset_task);
2892 struct net_device *dev = port->netdev;
7a291083 2893
099473c1 2894 mutex_lock(&dlpar_mem_lock);
7a291083 2895 port->resets++;
a5af6ad3 2896 mutex_lock(&port->port_lock);
b9564468 2897 netif_tx_disable(dev);
bea3348e
SH		 2898
2899 port_napi_disable(port);
7a291083 2900
44c82152 2901 ehea_down(dev);
7a291083
JBT		 2902
2903 ret = ehea_up(dev);
44c82152 2904 if (ret)
7a291083 2905 goto out;
7a291083 2906
2c69448b
JBT		 2907 ehea_set_multicast_list(dev);
2908
8c4877a4 2909 netif_info(port, timer, dev, "reset successful\n");
7a291083 2910
bea3348e
SH		 2911 port_napi_enable(port);
2912
b9564468 2913 netif_tx_wake_all_queues(dev);
7a291083 2914out:
a5af6ad3 2915 mutex_unlock(&port->port_lock);
099473c1 2916 mutex_unlock(&dlpar_mem_lock);
7a291083
JBT		 2917}
2918
3d6b892b 2919static void ehea_rereg_mrs(void)
44c82152
TK		 2920{
2921 int ret, i;
2922 struct ehea_adapter *adapter;
2923
8c4877a4 2924 pr_info("LPAR memory changed - re-initializing driver\n");
44c82152
TK		 2925
2926 list_for_each_entry(adapter, &adapter_list, list)
2927 if (adapter->active_ports) {
2928 /* Shutdown all ports */
2929 for (i = 0; i < EHEA_MAX_PORTS; i++) {
2930 struct ehea_port *port = adapter->port[i];
a5af6ad3 2931 struct net_device *dev;
44c82152 2932
a5af6ad3
DW		 2933 if (!port)
2934 continue;
44c82152 2935
a5af6ad3
DW		 2936 dev = port->netdev;
2937
2938 if (dev->flags & IFF_UP) {
2939 mutex_lock(&port->port_lock);
b9564468 2940 netif_tx_disable(dev);
df39e8ba 2941 ehea_flush_sq(port);
a5af6ad3
DW		 2942 ret = ehea_stop_qps(dev);
2943 if (ret) {
2944 mutex_unlock(&port->port_lock);
2945 goto out;
44c82152 2946 }
a5af6ad3
DW		 2947 port_napi_disable(port);
2948 mutex_unlock(&port->port_lock);
44c82152 2949 }
2928db4c 2950 reset_sq_restart_flag(port);
44c82152
TK		 2951 }
2952
2953 /* Unregister old memory region */
2954 ret = ehea_rem_mr(&adapter->mr);
2955 if (ret) {
8c4877a4 2956 pr_err("unregister MR failed - driver inoperable!\n");
44c82152
TK		 2957 goto out;
2958 }
2959 }
2960
44c82152
TK		 2961 clear_bit(__EHEA_STOP_XFER, &ehea_driver_flags);
2962
2963 list_for_each_entry(adapter, &adapter_list, list)
2964 if (adapter->active_ports) {
2965 /* Register new memory region */
2966 ret = ehea_reg_kernel_mr(adapter, &adapter->mr);
2967 if (ret) {
8c4877a4 2968 pr_err("register MR failed - driver inoperable!\n");
44c82152
TK		 2969 goto out;
2970 }
2971
2972 /* Restart all ports */
2973 for (i = 0; i < EHEA_MAX_PORTS; i++) {
2974 struct ehea_port *port = adapter->port[i];
2975
2976 if (port) {
2977 struct net_device *dev = port->netdev;
2978
2979 if (dev->flags & IFF_UP) {
a5af6ad3 2980 mutex_lock(&port->port_lock);
2c69448b 2981 ret = ehea_restart_qps(dev);
6f4d6dc1
BL		 2982 if (!ret) {
2983 check_sqs(port);
2984 port_napi_enable(port);
b9564468 2985 netif_tx_wake_all_queues(dev);
6f4d6dc1
BL		 2986 } else {
2987 netdev_err(dev, "Unable to restart QPS\n");
2988 }
a5af6ad3 2989 mutex_unlock(&port->port_lock);
44c82152
TK		 2990 }
2991 }
2992 }
2993 }
8c4877a4 2994 pr_info("re-initializing driver complete\n");
44c82152
TK		 2995out:
2996 return;
2997}
2998
7a291083
JBT		 2999static void ehea_tx_watchdog(struct net_device *dev)
3000{
3001 struct ehea_port *port = netdev_priv(dev);
3002
2c69448b
JBT		 3003 if (netif_carrier_ok(dev) &&
3004 !test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))
2f69ae01 3005 ehea_schedule_port_reset(port);
7a291083
JBT		 3006}
3007
3008int ehea_sense_adapter_attr(struct ehea_adapter *adapter)
3009{
3010 struct hcp_query_ehea *cb;
3011 u64 hret;
3012 int ret;
3013
3faf2693 3014 cb = (void *)get_zeroed_page(GFP_KERNEL);
7a291083
JBT		 3015 if (!cb) {
3016 ret = -ENOMEM;
3017 goto out;
3018 }
3019
3020 hret = ehea_h_query_ehea(adapter->handle, cb);
3021
3022 if (hret != H_SUCCESS) {
3023 ret = -EIO;
3024 goto out_herr;
3025 }
3026
7a291083
JBT		 3027 adapter->max_mc_mac = cb->max_mc_mac - 1;
3028 ret = 0;
3029
3030out_herr:
3faf2693 3031 free_page((unsigned long)cb);
7a291083
JBT		 3032out:
3033 return ret;
3034}
3035
1acf2318 3036int ehea_get_jumboframe_status(struct ehea_port *port, int *jumbo)
7a291083 3037{
7a291083 3038 struct hcp_ehea_port_cb4 *cb4;
1acf2318
JBT		 3039 u64 hret;
3040 int ret = 0;
7a291083 3041
1acf2318 3042 *jumbo = 0;
7a291083 3043
1acf2318 3044 /* (Try to) enable *jumbo frames */
3faf2693 3045 cb4 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083 3046 if (!cb4) {
8c4877a4 3047 pr_err("no mem for cb4\n");
1acf2318
JBT		 3048 ret = -ENOMEM;
3049 goto out;
7a291083 3050 } else {
1acf2318 3051 hret = ehea_h_query_ehea_port(port->adapter->handle,
9c750b7d
TK		 3052 port->logical_port_id,
3053 H_PORT_CB4,
3054 H_PORT_CB4_JUMBO, cb4);
9c750b7d
TK		 3055 if (hret == H_SUCCESS) {
3056 if (cb4->jumbo_frame)
1acf2318 3057 *jumbo = 1;
9c750b7d
TK		 3058 else {
3059 cb4->jumbo_frame = 1;
1acf2318
JBT		 3060 hret = ehea_h_modify_ehea_port(port->adapter->
3061 handle,
9c750b7d 3062 port->
1acf2318 3063 logical_port_id,
9c750b7d
TK		 3064 H_PORT_CB4,
3065 H_PORT_CB4_JUMBO,
3066 cb4);
3067 if (hret == H_SUCCESS)
1acf2318 3068 *jumbo = 1;
9c750b7d 3069 }
1acf2318
JBT		 3070 } else
3071 ret = -EINVAL;
3072
3faf2693 3073 free_page((unsigned long)cb4);
7a291083 3074 }
1acf2318
JBT		 3075out:
3076 return ret;
3077}
3078
3079static ssize_t ehea_show_port_id(struct device *dev,
3080 struct device_attribute *attr, char *buf)
3081{
3082 struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev);
a8e34fda 3083 return sprintf(buf, "%d", port->logical_port_id);
1acf2318
JBT		 3084}
3085
3086static DEVICE_ATTR(log_port_id, S_IRUSR | S_IRGRP | S_IROTH, ehea_show_port_id,
3087 NULL);
3088
3089static void __devinit logical_port_release(struct device *dev)
3090{
3091 struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev);
61c7a080 3092 of_node_put(port->ofdev.dev.of_node);
1acf2318
JBT		 3093}
3094
3095static struct device *ehea_register_port(struct ehea_port *port,
3096 struct device_node *dn)
3097{
3098 int ret;
3099
61c7a080 3100 port->ofdev.dev.of_node = of_node_get(dn);
6b08f3ae 3101 port->ofdev.dev.parent = &port->adapter->ofdev->dev;
d1dea38d 3102 port->ofdev.dev.bus = &ibmebus_bus_type;
1acf2318 3103
db1d7bf7 3104 dev_set_name(&port->ofdev.dev, "port%d", port_name_cnt++);
1acf2318
JBT		 3105 port->ofdev.dev.release = logical_port_release;
3106
3107 ret = of_device_register(&port->ofdev);
3108 if (ret) {
8c4877a4 3109 pr_err("failed to register device. ret=%d\n", ret);
1acf2318
JBT		 3110 goto out;
3111 }
3112
3113 ret = device_create_file(&port->ofdev.dev, &dev_attr_log_port_id);
d1d25aab 3114 if (ret) {
8c4877a4 3115 pr_err("failed to register attributes, ret=%d\n", ret);
1acf2318
JBT		 3116 goto out_unreg_of_dev;
3117 }
e542aa6b 3118
1acf2318
JBT		 3119 return &port->ofdev.dev;
3120
3121out_unreg_of_dev:
3122 of_device_unregister(&port->ofdev);
3123out:
3124 return NULL;
3125}
3126
3127static void ehea_unregister_port(struct ehea_port *port)
3128{
3129 device_remove_file(&port->ofdev.dev, &dev_attr_log_port_id);
3130 of_device_unregister(&port->ofdev);
3131}
3132
086c1b2c
TK		 3133static const struct net_device_ops ehea_netdev_ops = {
3134 .ndo_open = ehea_open,
3135 .ndo_stop = ehea_stop,
3136 .ndo_start_xmit = ehea_start_xmit,
3137#ifdef CONFIG_NET_POLL_CONTROLLER
3138 .ndo_poll_controller = ehea_netpoll,
3139#endif
3140 .ndo_get_stats = ehea_get_stats,
3141 .ndo_set_mac_address = ehea_set_mac_addr,
240c102d 3142 .ndo_validate_addr = eth_validate_addr,
afc4b13d 3143 .ndo_set_rx_mode = ehea_set_multicast_list,
086c1b2c 3144 .ndo_change_mtu = ehea_change_mtu,
086c1b2c 3145 .ndo_vlan_rx_add_vid = ehea_vlan_rx_add_vid,
32e8f9a8
AB		 3146 .ndo_vlan_rx_kill_vid = ehea_vlan_rx_kill_vid,
3147 .ndo_tx_timeout = ehea_tx_watchdog,
086c1b2c
TK		 3148};
3149
1acf2318
JBT		 3150struct ehea_port *ehea_setup_single_port(struct ehea_adapter *adapter,
3151 u32 logical_port_id,
3152 struct device_node *dn)
3153{
3154 int ret;
3155 struct net_device *dev;
3156 struct ehea_port *port;
3157 struct device *port_dev;
3158 int jumbo;
3159
3160 /* allocate memory for the port structures */
b9564468 3161 dev = alloc_etherdev_mq(sizeof(struct ehea_port), EHEA_MAX_PORT_RES);
1acf2318
JBT		 3162
3163 if (!dev) {
8c4877a4 3164 pr_err("no mem for net_device\n");
1acf2318
JBT		 3165 ret = -ENOMEM;
3166 goto out_err;
3167 }
3168
3169 port = netdev_priv(dev);
3170
a5af6ad3 3171 mutex_init(&port->port_lock);
1acf2318
JBT		 3172 port->state = EHEA_PORT_DOWN;
3173 port->sig_comp_iv = sq_entries / 10;
3174
3175 port->adapter = adapter;
3176 port->netdev = dev;
3177 port->logical_port_id = logical_port_id;
3178
3179 port->msg_enable = netif_msg_init(msg_level, EHEA_MSG_DEFAULT);
3180
3181 port->mc_list = kzalloc(sizeof(struct ehea_mc_list), GFP_KERNEL);
3182 if (!port->mc_list) {
3183 ret = -ENOMEM;
3184 goto out_free_ethdev;
3185 }
3186
3187 INIT_LIST_HEAD(&port->mc_list->list);
3188
3189 ret = ehea_sense_port_attr(port);
3190 if (ret)
3191 goto out_free_mc_list;
3192
b9564468
AB		 3193 netif_set_real_num_rx_queues(dev, port->num_def_qps);
3194 netif_set_real_num_tx_queues(dev, port->num_def_qps +
3195 port->num_add_tx_qps);
3196
1acf2318
JBT		 3197 port_dev = ehea_register_port(port, dn);
3198 if (!port_dev)
3199 goto out_free_mc_list;
3200
3201 SET_NETDEV_DEV(dev, port_dev);
7a291083
JBT		 3202
3203 /* initialize net_device structure */
7a291083
JBT		 3204 memcpy(dev->dev_addr, &port->mac_addr, ETH_ALEN);
3205
086c1b2c
TK		 3206 dev->netdev_ops = &ehea_netdev_ops;
3207 ehea_set_ethtool_ops(dev);
3208
f4786a96
MM		 3209 dev->hw_features = NETIF_F_SG | NETIF_F_FRAGLIST | NETIF_F_TSO
3210 | NETIF_F_IP_CSUM | NETIF_F_HW_VLAN_TX | NETIF_F_LRO;
7a291083 3211 dev->features = NETIF_F_SG | NETIF_F_FRAGLIST | NETIF_F_TSO
dc01c447 3212 | NETIF_F_HIGHDMA | NETIF_F_IP_CSUM | NETIF_F_HW_VLAN_TX
7a291083 3213 | NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_FILTER
3f7947b9 3214 | NETIF_F_RXCSUM;
7a291083
JBT		 3215 dev->watchdog_timeo = EHEA_WATCH_DOG_TIMEOUT;
3216
c7757fdb
BL		 3217 if (use_lro)
3218 dev->features |= NETIF_F_LRO;
3219
c4028958 3220 INIT_WORK(&port->reset_task, ehea_reset_port);
2aefcad8 3221 INIT_DELAYED_WORK(&port->stats_work, ehea_update_stats);
7a291083 3222
21ccc793
AB		 3223 init_waitqueue_head(&port->swqe_avail_wq);
3224 init_waitqueue_head(&port->restart_wq);
3225
2aefcad8 3226 memset(&port->stats, 0, sizeof(struct net_device_stats));
7a291083
JBT		 3227 ret = register_netdev(dev);
3228 if (ret) {
8c4877a4 3229 pr_err("register_netdev failed. ret=%d\n", ret);
21eee2dd 3230 goto out_unreg_port;
7a291083
JBT		 3231 }
3232
d4dc4ec9
JBT		 3233 port->lro_max_aggr = lro_max_aggr;
3234
1acf2318 3235 ret = ehea_get_jumboframe_status(port, &jumbo);
e542aa6b 3236 if (ret)
8c4877a4 3237 netdev_err(dev, "failed determining jumbo frame status\n");
1acf2318 3238
8c4877a4
JP		 3239 netdev_info(dev, "Jumbo frames are %sabled\n",
3240 jumbo == 1 ? "en" : "dis");
9c750b7d 3241
44c82152
TK		 3242 adapter->active_ports++;
3243
1acf2318 3244 return port;
7a291083 3245
1acf2318
JBT		 3246out_unreg_port:
3247 ehea_unregister_port(port);
3248
3249out_free_mc_list:
7a291083 3250 kfree(port->mc_list);
1acf2318
JBT		 3251
3252out_free_ethdev:
3253 free_netdev(dev);
3254
3255out_err:
8c4877a4
JP		 3256 pr_err("setting up logical port with id=%d failed, ret=%d\n",
3257 logical_port_id, ret);
1acf2318
JBT		 3258 return NULL;
3259}
3260
3261static void ehea_shutdown_single_port(struct ehea_port *port)
3262{
7fb1c2ac 3263 struct ehea_adapter *adapter = port->adapter;
f5c35cc1
TH		 3264
3265 cancel_work_sync(&port->reset_task);
2aefcad8 3266 cancel_delayed_work_sync(&port->stats_work);
1acf2318
JBT		 3267 unregister_netdev(port->netdev);
3268 ehea_unregister_port(port);
3269 kfree(port->mc_list);
3270 free_netdev(port->netdev);
7fb1c2ac 3271 adapter->active_ports--;
7a291083
JBT		 3272}
3273
3274static int ehea_setup_ports(struct ehea_adapter *adapter)
3275{
1acf2318
JBT		 3276 struct device_node *lhea_dn;
3277 struct device_node *eth_dn = NULL;
d1d25aab 3278
9f9a3b8a 3279 const u32 *dn_log_port_id;
1acf2318
JBT		 3280 int i = 0;
3281
61c7a080 3282 lhea_dn = adapter->ofdev->dev.of_node;
1eef4e04 3283 while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) {
e542aa6b 3284
40cd3a45 3285 dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no",
d1d25aab 3286 NULL);
1acf2318 3287 if (!dn_log_port_id) {
8c4877a4
JP		 3288 pr_err("bad device node: eth_dn name=%s\n",
3289 eth_dn->full_name);
1acf2318
JBT		 3290 continue;
3291 }
7a291083 3292
1211bb6d 3293 if (ehea_add_adapter_mr(adapter)) {
8c4877a4 3294 pr_err("creating MR failed\n");
1211bb6d
TK		 3295 of_node_put(eth_dn);
3296 return -EIO;
3297 }
3298
1acf2318
JBT		 3299 adapter->port[i] = ehea_setup_single_port(adapter,
3300 *dn_log_port_id,
3301 eth_dn);
7a291083 3302 if (adapter->port[i])
8c4877a4
JP		 3303 netdev_info(adapter->port[i]->netdev,
3304 "logical port id #%d\n", *dn_log_port_id);
1211bb6d
TK		 3305 else
3306 ehea_remove_adapter_mr(adapter);
3307
1acf2318 3308 i++;
ee289b64 3309 }
1211bb6d 3310 return 0;
1acf2318
JBT		 3311}
3312
e542aa6b
JBT		 3313static struct device_node *ehea_get_eth_dn(struct ehea_adapter *adapter,
3314 u32 logical_port_id)
1acf2318
JBT		 3315{
3316 struct device_node *lhea_dn;
3317 struct device_node *eth_dn = NULL;
9f9a3b8a 3318 const u32 *dn_log_port_id;
1acf2318 3319
61c7a080 3320 lhea_dn = adapter->ofdev->dev.of_node;
1eef4e04 3321 while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) {
e542aa6b 3322
40cd3a45 3323 dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no",
d1d25aab 3324 NULL);
1acf2318
JBT		 3325 if (dn_log_port_id)
3326 if (*dn_log_port_id == logical_port_id)
3327 return eth_dn;
ee289b64 3328 }
1acf2318
JBT		 3329
3330 return NULL;
3331}
3332
3333static ssize_t ehea_probe_port(struct device *dev,
3334 struct device_attribute *attr,
3335 const char *buf, size_t count)
3336{
c7ae011d 3337 struct ehea_adapter *adapter = dev_get_drvdata(dev);
1acf2318
JBT		 3338 struct ehea_port *port;
3339 struct device_node *eth_dn = NULL;
3340 int i;
3341
3342 u32 logical_port_id;
3343
a8e34fda 3344 sscanf(buf, "%d", &logical_port_id);
1acf2318
JBT		 3345
3346 port = ehea_get_port(adapter, logical_port_id);
3347
3348 if (port) {
8c4877a4
JP		 3349 netdev_info(port->netdev, "adding port with logical port id=%d failed: port already configured\n",
3350 logical_port_id);
1acf2318 3351 return -EINVAL;
7a291083 3352 }
e542aa6b 3353
1acf2318 3354 eth_dn = ehea_get_eth_dn(adapter, logical_port_id);
7a291083 3355
1acf2318 3356 if (!eth_dn) {
8c4877a4 3357 pr_info("no logical port with id %d found\n", logical_port_id);
1acf2318
JBT		 3358 return -EINVAL;
3359 }
e542aa6b 3360
1211bb6d 3361 if (ehea_add_adapter_mr(adapter)) {
8c4877a4 3362 pr_err("creating MR failed\n");
1211bb6d
TK		 3363 return -EIO;
3364 }
3365
1acf2318 3366 port = ehea_setup_single_port(adapter, logical_port_id, eth_dn);
7a291083 3367
1eef4e04
JBT		 3368 of_node_put(eth_dn);
3369
1acf2318 3370 if (port) {
508d2b5d 3371 for (i = 0; i < EHEA_MAX_PORTS; i++)
1acf2318
JBT		 3372 if (!adapter->port[i]) {
3373 adapter->port[i] = port;
3374 break;
3375 }
7a291083 3376
8c4877a4
JP		 3377 netdev_info(port->netdev, "added: (logical port id=%d)\n",
3378 logical_port_id);
1211bb6d
TK		 3379 } else {
3380 ehea_remove_adapter_mr(adapter);
e542aa6b 3381 return -EIO;
1211bb6d 3382 }
7a291083 3383
1acf2318
JBT		 3384 return (ssize_t) count;
3385}
3386
3387static ssize_t ehea_remove_port(struct device *dev,
3388 struct device_attribute *attr,
3389 const char *buf, size_t count)
3390{
c7ae011d 3391 struct ehea_adapter *adapter = dev_get_drvdata(dev);
1acf2318
JBT		 3392 struct ehea_port *port;
3393 int i;
3394 u32 logical_port_id;
3395
a8e34fda 3396 sscanf(buf, "%d", &logical_port_id);
1acf2318
JBT		 3397
3398 port = ehea_get_port(adapter, logical_port_id);
3399
3400 if (port) {
8c4877a4
JP		 3401 netdev_info(port->netdev, "removed: (logical port id=%d)\n",
3402 logical_port_id);
1acf2318
JBT		 3403
3404 ehea_shutdown_single_port(port);
3405
508d2b5d 3406 for (i = 0; i < EHEA_MAX_PORTS; i++)
1acf2318
JBT		 3407 if (adapter->port[i] == port) {
3408 adapter->port[i] = NULL;
3409 break;
3410 }
3411 } else {
8c4877a4
JP		 3412 pr_err("removing port with logical port id=%d failed. port not configured.\n",
3413 logical_port_id);
1acf2318
JBT		 3414 return -EINVAL;
3415 }
3416
1211bb6d
TK		 3417 ehea_remove_adapter_mr(adapter);
3418
1acf2318
JBT		 3419 return (ssize_t) count;
3420}
3421
3422static DEVICE_ATTR(probe_port, S_IWUSR, NULL, ehea_probe_port);
3423static DEVICE_ATTR(remove_port, S_IWUSR, NULL, ehea_remove_port);
3424
2dc11581 3425int ehea_create_device_sysfs(struct platform_device *dev)
1acf2318 3426{
6b08f3ae 3427 int ret = device_create_file(&dev->dev, &dev_attr_probe_port);
1acf2318
JBT		 3428 if (ret)
3429 goto out;
3430
6b08f3ae 3431 ret = device_create_file(&dev->dev, &dev_attr_remove_port);
1acf2318 3432out:
7a291083
JBT		 3433 return ret;
3434}
3435
2dc11581 3436void ehea_remove_device_sysfs(struct platform_device *dev)
1acf2318 3437{
6b08f3ae
JF		 3438 device_remove_file(&dev->dev, &dev_attr_probe_port);
3439 device_remove_file(&dev->dev, &dev_attr_remove_port);
1acf2318
JBT		 3440}
3441
2dc11581 3442static int __devinit ehea_probe_adapter(struct platform_device *dev,
1acf2318 3443 const struct of_device_id *id)
7a291083
JBT		 3444{
3445 struct ehea_adapter *adapter;
9f9a3b8a 3446 const u64 *adapter_handle;
7a291083
JBT		 3447 int ret;
3448
61c7a080 3449 if (!dev || !dev->dev.of_node) {
8c4877a4 3450 pr_err("Invalid ibmebus device probed\n");
1eef4e04
JBT		 3451 return -EINVAL;
3452 }
3453
7a291083
JBT		 3454 adapter = kzalloc(sizeof(*adapter), GFP_KERNEL);
3455 if (!adapter) {
3456 ret = -ENOMEM;
6b08f3ae 3457 dev_err(&dev->dev, "no mem for ehea_adapter\n");
7a291083
JBT		 3458 goto out;
3459 }
3460
44c82152
TK		 3461 list_add(&adapter->list, &adapter_list);
3462
6b08f3ae 3463 adapter->ofdev = dev;
1acf2318 3464
61c7a080 3465 adapter_handle = of_get_property(dev->dev.of_node, "ibm,hea-handle",
d1d25aab 3466 NULL);
061bf3cd
TK		 3467 if (adapter_handle)
3468 adapter->handle = *adapter_handle;
3469
3470 if (!adapter->handle) {
6b08f3ae 3471 dev_err(&dev->dev, "failed getting handle for adapter"
61c7a080 3472 " '%s'\n", dev->dev.of_node->full_name);
7a291083
JBT		 3473 ret = -ENODEV;
3474 goto out_free_ad;
3475 }
3476
7a291083
JBT		 3477 adapter->pd = EHEA_PD_ID;
3478
c7ae011d 3479 dev_set_drvdata(&dev->dev, adapter);
7a291083 3480
7a291083
JBT		 3481
3482 /* initialize adapter and ports */
3483 /* get adapter properties */
3484 ret = ehea_sense_adapter_attr(adapter);
3485 if (ret) {
898eb71c 3486 dev_err(&dev->dev, "sense_adapter_attr failed: %d\n", ret);
1211bb6d 3487 goto out_free_ad;
7a291083 3488 }
7a291083
JBT		 3489
3490 adapter->neq = ehea_create_eq(adapter,
3491 EHEA_NEQ, EHEA_MAX_ENTRIES_EQ, 1);
3492 if (!adapter->neq) {
1eef4e04 3493 ret = -EIO;
898eb71c 3494 dev_err(&dev->dev, "NEQ creation failed\n");
1211bb6d 3495 goto out_free_ad;
7a291083
JBT		 3496 }
3497
3498 tasklet_init(&adapter->neq_tasklet, ehea_neq_tasklet,
3499 (unsigned long)adapter);
3500
6b08f3ae 3501 ret = ibmebus_request_irq(adapter->neq->attr.ist1,
38515e90 3502 ehea_interrupt_neq, IRQF_DISABLED,
7a291083
JBT		 3503 "ehea_neq", adapter);
3504 if (ret) {
898eb71c 3505 dev_err(&dev->dev, "requesting NEQ IRQ failed\n");
7a291083
JBT		 3506 goto out_kill_eq;
3507 }
3508
1eef4e04
JBT		 3509 ret = ehea_create_device_sysfs(dev);
3510 if (ret)
3bf76b81 3511 goto out_free_irq;
1acf2318 3512
7a291083
JBT		 3513 ret = ehea_setup_ports(adapter);
3514 if (ret) {
898eb71c 3515 dev_err(&dev->dev, "setup_ports failed\n");
1acf2318 3516 goto out_rem_dev_sysfs;
7a291083
JBT		 3517 }
3518
3519 ret = 0;
3520 goto out;
3521
1acf2318
JBT		 3522out_rem_dev_sysfs:
3523 ehea_remove_device_sysfs(dev);
3524
7a291083 3525out_free_irq:
6b08f3ae 3526 ibmebus_free_irq(adapter->neq->attr.ist1, adapter);
7a291083
JBT		 3527
3528out_kill_eq:
3529 ehea_destroy_eq(adapter->neq);
3530
7a291083 3531out_free_ad:
51621fbd 3532 list_del(&adapter->list);
7a291083 3533 kfree(adapter);
21eee2dd 3534
7a291083 3535out:
21eee2dd 3536 ehea_update_firmware_handles();
52e21b1b 3537
7a291083
JBT		 3538 return ret;
3539}
3540
2dc11581 3541static int __devexit ehea_remove(struct platform_device *dev)
7a291083 3542{
c7ae011d 3543 struct ehea_adapter *adapter = dev_get_drvdata(&dev->dev);
7a291083
JBT		 3544 int i;
3545
1acf2318 3546 for (i = 0; i < EHEA_MAX_PORTS; i++)
7a291083
JBT		 3547 if (adapter->port[i]) {
3548 ehea_shutdown_single_port(adapter->port[i]);
3549 adapter->port[i] = NULL;
3550 }
1acf2318
JBT		 3551
3552 ehea_remove_device_sysfs(dev);
3553
6b08f3ae 3554 ibmebus_free_irq(adapter->neq->attr.ist1, adapter);
d4150a27 3555 tasklet_kill(&adapter->neq_tasklet);
7a291083
JBT		 3556
3557 ehea_destroy_eq(adapter->neq);
1211bb6d 3558 ehea_remove_adapter_mr(adapter);
44c82152 3559 list_del(&adapter->list);
7a291083 3560 kfree(adapter);
44c82152 3561
21eee2dd 3562 ehea_update_firmware_handles();
21eee2dd 3563
7a291083
JBT		 3564 return 0;
3565}
3566
21eee2dd
TK		 3567void ehea_crash_handler(void)
3568{
3569 int i;
3570
3571 if (ehea_fw_handles.arr)
3572 for (i = 0; i < ehea_fw_handles.num_entries; i++)
3573 ehea_h_free_resource(ehea_fw_handles.arr[i].adh,
3574 ehea_fw_handles.arr[i].fwh,
3575 FORCE_FREE);
3576
3577 if (ehea_bcmc_regs.arr)
3578 for (i = 0; i < ehea_bcmc_regs.num_entries; i++)
3579 ehea_h_reg_dereg_bcmc(ehea_bcmc_regs.arr[i].adh,
3580 ehea_bcmc_regs.arr[i].port_id,
3581 ehea_bcmc_regs.arr[i].reg_type,
3582 ehea_bcmc_regs.arr[i].macaddr,
3583 0, H_DEREG_BCMC);
3584}
3585
48cfb14f
HH		 3586static int ehea_mem_notifier(struct notifier_block *nb,
3587 unsigned long action, void *data)
3588{
a7c561f2 3589 int ret = NOTIFY_BAD;
d4f12daf 3590 struct memory_notify *arg = data;
a7c561f2 3591
099473c1 3592 mutex_lock(&dlpar_mem_lock);
a7c561f2 3593
48cfb14f 3594 switch (action) {
d4f12daf 3595 case MEM_CANCEL_OFFLINE:
8c4877a4 3596 pr_info("memory offlining canceled");
d4f12daf
HH		 3597 /* Readd canceled memory block */
3598 case MEM_ONLINE:
8c4877a4 3599 pr_info("memory is going online");
3876732c 3600 set_bit(__EHEA_STOP_XFER, &ehea_driver_flags);
d4f12daf 3601 if (ehea_add_sect_bmap(arg->start_pfn, arg->nr_pages))
a7c561f2 3602 goto out_unlock;
3d6b892b 3603 ehea_rereg_mrs();
d4f12daf
HH		 3604 break;
3605 case MEM_GOING_OFFLINE:
8c4877a4 3606 pr_info("memory is going offline");
3876732c 3607 set_bit(__EHEA_STOP_XFER, &ehea_driver_flags);
d4f12daf 3608 if (ehea_rem_sect_bmap(arg->start_pfn, arg->nr_pages))
a7c561f2 3609 goto out_unlock;
3d6b892b 3610 ehea_rereg_mrs();
48cfb14f
HH		 3611 break;
3612 default:
3613 break;
3614 }
52e21b1b
JBT		 3615
3616 ehea_update_firmware_handles();
a7c561f2 3617 ret = NOTIFY_OK;
52e21b1b 3618
a7c561f2
TK		 3619out_unlock:
3620 mutex_unlock(&dlpar_mem_lock);
a7c561f2 3621 return ret;
48cfb14f
HH		 3622}
3623
3624static struct notifier_block ehea_mem_nb = {
3625 .notifier_call = ehea_mem_notifier,
3626};
3627
2a6f4e49
JBT		 3628static int ehea_reboot_notifier(struct notifier_block *nb,
3629 unsigned long action, void *unused)
3630{
3631 if (action == SYS_RESTART) {
8c4877a4 3632 pr_info("Reboot: freeing all eHEA resources\n");
2a6f4e49
JBT		 3633 ibmebus_unregister_driver(&ehea_driver);
3634 }
3635 return NOTIFY_DONE;
3636}
3637
3638static struct notifier_block ehea_reboot_nb = {
508d2b5d 3639 .notifier_call = ehea_reboot_notifier,
2a6f4e49
JBT		 3640};
3641
7a291083
JBT		 3642static int check_module_parm(void)
3643{
3644 int ret = 0;
3645
3646 if ((rq1_entries < EHEA_MIN_ENTRIES_QP) ||
3647 (rq1_entries > EHEA_MAX_ENTRIES_RQ1)) {
8c4877a4 3648 pr_info("Bad parameter: rq1_entries\n");
7a291083
JBT		 3649 ret = -EINVAL;
3650 }
3651 if ((rq2_entries < EHEA_MIN_ENTRIES_QP) ||
3652 (rq2_entries > EHEA_MAX_ENTRIES_RQ2)) {
8c4877a4 3653 pr_info("Bad parameter: rq2_entries\n");
7a291083
JBT		 3654 ret = -EINVAL;
3655 }
3656 if ((rq3_entries < EHEA_MIN_ENTRIES_QP) ||
3657 (rq3_entries > EHEA_MAX_ENTRIES_RQ3)) {
8c4877a4 3658 pr_info("Bad parameter: rq3_entries\n");
7a291083
JBT		 3659 ret = -EINVAL;
3660 }
3661 if ((sq_entries < EHEA_MIN_ENTRIES_QP) ||
3662 (sq_entries > EHEA_MAX_ENTRIES_SQ)) {
8c4877a4 3663 pr_info("Bad parameter: sq_entries\n");
7a291083
JBT		 3664 ret = -EINVAL;
3665 }
3666
3667 return ret;
3668}
3669
4c3ca4da
JBT		 3670static ssize_t ehea_show_capabilities(struct device_driver *drv,
3671 char *buf)
3672{
3673 return sprintf(buf, "%d", EHEA_CAPABILITIES);
3674}
3675
3676static DRIVER_ATTR(capabilities, S_IRUSR | S_IRGRP | S_IROTH,
3677 ehea_show_capabilities, NULL);
3678
7a291083
JBT		 3679int __init ehea_module_init(void)
3680{
3681 int ret;
3682
8c4877a4 3683 pr_info("IBM eHEA ethernet device driver (Release %s)\n", DRV_VERSION);
7a291083 3684
21eee2dd
TK		 3685 memset(&ehea_fw_handles, 0, sizeof(ehea_fw_handles));
3686 memset(&ehea_bcmc_regs, 0, sizeof(ehea_bcmc_regs));
3687
9f71a568 3688 mutex_init(&ehea_fw_handles.lock);
5c2cec14 3689 spin_lock_init(&ehea_bcmc_regs.lock);
44c82152 3690
7a291083
JBT		 3691 ret = check_module_parm();
3692 if (ret)
3693 goto out;
44c82152
TK		 3694
3695 ret = ehea_create_busmap();
3696 if (ret)
3697 goto out;
3698
21eee2dd
TK		 3699 ret = register_reboot_notifier(&ehea_reboot_nb);
3700 if (ret)
8c4877a4 3701 pr_info("failed registering reboot notifier\n");
21eee2dd 3702
48cfb14f
HH		 3703 ret = register_memory_notifier(&ehea_mem_nb);
3704 if (ret)
8c4877a4 3705 pr_info("failed registering memory remove notifier\n");
48cfb14f 3706
c061b18d 3707 ret = crash_shutdown_register(ehea_crash_handler);
21eee2dd 3708 if (ret)
8c4877a4 3709 pr_info("failed registering crash handler\n");
2a6f4e49 3710
7a291083 3711 ret = ibmebus_register_driver(&ehea_driver);
4c3ca4da 3712 if (ret) {
8c4877a4 3713 pr_err("failed registering eHEA device driver on ebus\n");
21eee2dd 3714 goto out2;
4c3ca4da
JBT		 3715 }
3716
3717 ret = driver_create_file(&ehea_driver.driver,
3718 &driver_attr_capabilities);
3719 if (ret) {
8c4877a4
JP		 3720 pr_err("failed to register capabilities attribute, ret=%d\n",
3721 ret);
21eee2dd 3722 goto out3;
4c3ca4da 3723 }
7a291083 3724
21eee2dd
TK		 3725 return ret;
3726
3727out3:
3728 ibmebus_unregister_driver(&ehea_driver);
3729out2:
48cfb14f 3730 unregister_memory_notifier(&ehea_mem_nb);
21eee2dd 3731 unregister_reboot_notifier(&ehea_reboot_nb);
c061b18d 3732 crash_shutdown_unregister(ehea_crash_handler);
7a291083
JBT		 3733out:
3734 return ret;
3735}
3736
3737static void __exit ehea_module_exit(void)
3738{
21eee2dd
TK		 3739 int ret;
3740
4c3ca4da 3741 driver_remove_file(&ehea_driver.driver, &driver_attr_capabilities);
7a291083 3742 ibmebus_unregister_driver(&ehea_driver);
2a6f4e49 3743 unregister_reboot_notifier(&ehea_reboot_nb);
c061b18d 3744 ret = crash_shutdown_unregister(ehea_crash_handler);
21eee2dd 3745 if (ret)
8c4877a4 3746 pr_info("failed unregistering crash handler\n");
48cfb14f 3747 unregister_memory_notifier(&ehea_mem_nb);
21eee2dd
TK		 3748 kfree(ehea_fw_handles.arr);
3749 kfree(ehea_bcmc_regs.arr);
44c82152 3750 ehea_destroy_busmap();
7a291083
JBT		 3751}
3752
3753module_init(ehea_module_init);
3754module_exit(ehea_module_exit);
Linux kernel - Deliverables
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