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drivers/net: don't use flush_scheduled_work()
[linux-2.6-block.git] / drivers / net / ehea / ehea_main.c
CommitLineData
7a291083
JBT		 1/*
2 * linux/drivers/net/ehea/ehea_main.c
3 *
4 * eHEA ethernet device driver for IBM eServer System p
5 *
6 * (C) Copyright IBM Corp. 2006
7 *
8 * Authors:
508d2b5d
DM		 9 * Christoph Raisch <raisch@de.ibm.com>
10 * Jan-Bernd Themann <themann@de.ibm.com>
11 * Thomas Klein <tklein@de.ibm.com>
7a291083
JBT		 12 *
13 *
14 * This program is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License as published by
16 * the Free Software Foundation; either version 2, or (at your option)
17 * any later version.
18 *
19 * This program is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU General Public License for more details.
23 *
24 * You should have received a copy of the GNU General Public License
25 * along with this program; if not, write to the Free Software
26 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
27 */
28
29#include <linux/in.h>
30#include <linux/ip.h>
31#include <linux/tcp.h>
32#include <linux/udp.h>
33#include <linux/if.h>
34#include <linux/list.h>
5a0e3ad6 35#include <linux/slab.h>
7a291083 36#include <linux/if_ether.h>
2a6f4e49
JBT		 37#include <linux/notifier.h>
38#include <linux/reboot.h>
48cfb14f 39#include <linux/memory.h>
21eee2dd 40#include <asm/kexec.h>
06f89edf 41#include <linux/mutex.h>
2a6f4e49 42
7a291083
JBT		 43#include <net/ip.h>
44
45#include "ehea.h"
46#include "ehea_qmr.h"
47#include "ehea_phyp.h"
48
49
50MODULE_LICENSE("GPL");
51MODULE_AUTHOR("Christoph Raisch <raisch@de.ibm.com>");
52MODULE_DESCRIPTION("IBM eServer HEA Driver");
53MODULE_VERSION(DRV_VERSION);
54
55
56static int msg_level = -1;
57static int rq1_entries = EHEA_DEF_ENTRIES_RQ1;
58static int rq2_entries = EHEA_DEF_ENTRIES_RQ2;
59static int rq3_entries = EHEA_DEF_ENTRIES_RQ3;
60static int sq_entries = EHEA_DEF_ENTRIES_SQ;
508d2b5d
DM		 61static int use_mcs;
62static int use_lro;
d4dc4ec9 63static int lro_max_aggr = EHEA_LRO_MAX_AGGR;
18604c54 64static int num_tx_qps = EHEA_NUM_TX_QP;
508d2b5d 65static int prop_carrier_state;
7a291083
JBT		 66
67module_param(msg_level, int, 0);
68module_param(rq1_entries, int, 0);
69module_param(rq2_entries, int, 0);
70module_param(rq3_entries, int, 0);
71module_param(sq_entries, int, 0);
8759cf76 72module_param(prop_carrier_state, int, 0);
18604c54 73module_param(use_mcs, int, 0);
d4dc4ec9
JBT		 74module_param(use_lro, int, 0);
75module_param(lro_max_aggr, int, 0);
18604c54 76module_param(num_tx_qps, int, 0);
7a291083 77
18604c54 78MODULE_PARM_DESC(num_tx_qps, "Number of TX-QPS");
7a291083 79MODULE_PARM_DESC(msg_level, "msg_level");
8759cf76
JBT		 80MODULE_PARM_DESC(prop_carrier_state, "Propagate carrier state of physical "
81 "port to stack. 1:yes, 0:no. Default = 0 ");
7a291083
JBT		 82MODULE_PARM_DESC(rq3_entries, "Number of entries for Receive Queue 3 "
83 "[2^x - 1], x = [6..14]. Default = "
84 __MODULE_STRING(EHEA_DEF_ENTRIES_RQ3) ")");
85MODULE_PARM_DESC(rq2_entries, "Number of entries for Receive Queue 2 "
86 "[2^x - 1], x = [6..14]. Default = "
87 __MODULE_STRING(EHEA_DEF_ENTRIES_RQ2) ")");
88MODULE_PARM_DESC(rq1_entries, "Number of entries for Receive Queue 1 "
89 "[2^x - 1], x = [6..14]. Default = "
90 __MODULE_STRING(EHEA_DEF_ENTRIES_RQ1) ")");
91MODULE_PARM_DESC(sq_entries, " Number of entries for the Send Queue "
92 "[2^x - 1], x = [6..14]. Default = "
93 __MODULE_STRING(EHEA_DEF_ENTRIES_SQ) ")");
18072a5b 94MODULE_PARM_DESC(use_mcs, " 0:NAPI, 1:Multiple receive queues, Default = 0 ");
7a291083 95
d4dc4ec9
JBT		 96MODULE_PARM_DESC(lro_max_aggr, " LRO: Max packets to be aggregated. Default = "
97 __MODULE_STRING(EHEA_LRO_MAX_AGGR));
98MODULE_PARM_DESC(use_lro, " Large Receive Offload, 1: enable, 0: disable, "
99 "Default = 0");
100
508d2b5d 101static int port_name_cnt;
44c82152 102static LIST_HEAD(adapter_list);
48e4cc77 103static unsigned long ehea_driver_flags;
44c82152 104struct work_struct ehea_rereg_mr_task;
06f89edf 105static DEFINE_MUTEX(dlpar_mem_lock);
21eee2dd
TK		 106struct ehea_fw_handle_array ehea_fw_handles;
107struct ehea_bcmc_reg_array ehea_bcmc_regs;
108
d1dea38d 109
2dc11581 110static int __devinit ehea_probe_adapter(struct platform_device *dev,
d1d25aab 111 const struct of_device_id *id);
d1dea38d 112
2dc11581 113static int __devexit ehea_remove(struct platform_device *dev);
d1dea38d
TK		 114
115static struct of_device_id ehea_device_table[] = {
116 {
117 .name = "lhea",
118 .compatible = "IBM,lhea",
119 },
120 {},
121};
b0afffe8 122MODULE_DEVICE_TABLE(of, ehea_device_table);
d1dea38d 123
6b08f3ae 124static struct of_platform_driver ehea_driver = {
4018294b
GL		 125 .driver = {
126 .name = "ehea",
127 .owner = THIS_MODULE,
128 .of_match_table = ehea_device_table,
129 },
d1dea38d
TK		 130 .probe = ehea_probe_adapter,
131 .remove = ehea_remove,
132};
133
508d2b5d
DM		 134void ehea_dump(void *adr, int len, char *msg)
135{
7a291083
JBT		 136 int x;
137 unsigned char *deb = adr;
138 for (x = 0; x < len; x += 16) {
cfa969e3
DM		 139 printk(DRV_NAME " %s adr=%p ofs=%04x %016llx %016llx\n", msg,
140 deb, x, *((u64 *)&deb[0]), *((u64 *)&deb[8]));
7a291083
JBT		 141 deb += 16;
142 }
143}
144
2f69ae01
JBT		 145void ehea_schedule_port_reset(struct ehea_port *port)
146{
147 if (!test_bit(__EHEA_DISABLE_PORT_RESET, &port->flags))
148 schedule_work(&port->reset_task);
149}
150
21eee2dd
TK		 151static void ehea_update_firmware_handles(void)
152{
153 struct ehea_fw_handle_entry *arr = NULL;
154 struct ehea_adapter *adapter;
155 int num_adapters = 0;
156 int num_ports = 0;
157 int num_portres = 0;
158 int i = 0;
159 int num_fw_handles, k, l;
160
161 /* Determine number of handles */
52e21b1b
JBT		 162 mutex_lock(&ehea_fw_handles.lock);
163
21eee2dd
TK		 164 list_for_each_entry(adapter, &adapter_list, list) {
165 num_adapters++;
166
167 for (k = 0; k < EHEA_MAX_PORTS; k++) {
168 struct ehea_port *port = adapter->port[k];
169
170 if (!port || (port->state != EHEA_PORT_UP))
171 continue;
172
173 num_ports++;
174 num_portres += port->num_def_qps + port->num_add_tx_qps;
175 }
176 }
177
178 num_fw_handles = num_adapters * EHEA_NUM_ADAPTER_FW_HANDLES +
179 num_ports * EHEA_NUM_PORT_FW_HANDLES +
180 num_portres * EHEA_NUM_PORTRES_FW_HANDLES;
181
182 if (num_fw_handles) {
baeb2ffa 183 arr = kcalloc(num_fw_handles, sizeof(*arr), GFP_KERNEL);
21eee2dd 184 if (!arr)
52e21b1b 185 goto out; /* Keep the existing array */
21eee2dd
TK		 186 } else
187 goto out_update;
188
189 list_for_each_entry(adapter, &adapter_list, list) {
52e21b1b
JBT		 190 if (num_adapters == 0)
191 break;
192
21eee2dd
TK		 193 for (k = 0; k < EHEA_MAX_PORTS; k++) {
194 struct ehea_port *port = adapter->port[k];
195
8e95a202
JP		 196 if (!port || (port->state != EHEA_PORT_UP) ||
197 (num_ports == 0))
21eee2dd
TK		 198 continue;
199
200 for (l = 0;
201 l < port->num_def_qps + port->num_add_tx_qps;
202 l++) {
203 struct ehea_port_res *pr = &port->port_res[l];
204
205 arr[i].adh = adapter->handle;
206 arr[i++].fwh = pr->qp->fw_handle;
207 arr[i].adh = adapter->handle;
208 arr[i++].fwh = pr->send_cq->fw_handle;
209 arr[i].adh = adapter->handle;
210 arr[i++].fwh = pr->recv_cq->fw_handle;
211 arr[i].adh = adapter->handle;
212 arr[i++].fwh = pr->eq->fw_handle;
213 arr[i].adh = adapter->handle;
214 arr[i++].fwh = pr->send_mr.handle;
215 arr[i].adh = adapter->handle;
216 arr[i++].fwh = pr->recv_mr.handle;
217 }
218 arr[i].adh = adapter->handle;
219 arr[i++].fwh = port->qp_eq->fw_handle;
52e21b1b 220 num_ports--;
21eee2dd
TK		 221 }
222
223 arr[i].adh = adapter->handle;
224 arr[i++].fwh = adapter->neq->fw_handle;
225
226 if (adapter->mr.handle) {
227 arr[i].adh = adapter->handle;
228 arr[i++].fwh = adapter->mr.handle;
229 }
52e21b1b 230 num_adapters--;
21eee2dd
TK		 231 }
232
233out_update:
234 kfree(ehea_fw_handles.arr);
235 ehea_fw_handles.arr = arr;
236 ehea_fw_handles.num_entries = i;
52e21b1b
JBT		 237out:
238 mutex_unlock(&ehea_fw_handles.lock);
21eee2dd
TK		 239}
240
241static void ehea_update_bcmc_registrations(void)
242{
52e21b1b 243 unsigned long flags;
21eee2dd
TK		 244 struct ehea_bcmc_reg_entry *arr = NULL;
245 struct ehea_adapter *adapter;
246 struct ehea_mc_list *mc_entry;
247 int num_registrations = 0;
248 int i = 0;
249 int k;
250
52e21b1b
JBT		 251 spin_lock_irqsave(&ehea_bcmc_regs.lock, flags);
252
21eee2dd
TK		 253 /* Determine number of registrations */
254 list_for_each_entry(adapter, &adapter_list, list)
255 for (k = 0; k < EHEA_MAX_PORTS; k++) {
256 struct ehea_port *port = adapter->port[k];
257
258 if (!port || (port->state != EHEA_PORT_UP))
259 continue;
260
261 num_registrations += 2; /* Broadcast registrations */
262
263 list_for_each_entry(mc_entry, &port->mc_list->list,list)
264 num_registrations += 2;
265 }
266
267 if (num_registrations) {
baeb2ffa 268 arr = kcalloc(num_registrations, sizeof(*arr), GFP_ATOMIC);
21eee2dd 269 if (!arr)
52e21b1b 270 goto out; /* Keep the existing array */
21eee2dd
TK		 271 } else
272 goto out_update;
273
274 list_for_each_entry(adapter, &adapter_list, list) {
275 for (k = 0; k < EHEA_MAX_PORTS; k++) {
276 struct ehea_port *port = adapter->port[k];
277
278 if (!port || (port->state != EHEA_PORT_UP))
279 continue;
280
52e21b1b
JBT		 281 if (num_registrations == 0)
282 goto out_update;
283
21eee2dd
TK		 284 arr[i].adh = adapter->handle;
285 arr[i].port_id = port->logical_port_id;
286 arr[i].reg_type = EHEA_BCMC_BROADCAST |
287 EHEA_BCMC_UNTAGGED;
288 arr[i++].macaddr = port->mac_addr;
289
290 arr[i].adh = adapter->handle;
291 arr[i].port_id = port->logical_port_id;
292 arr[i].reg_type = EHEA_BCMC_BROADCAST |
293 EHEA_BCMC_VLANID_ALL;
294 arr[i++].macaddr = port->mac_addr;
52e21b1b 295 num_registrations -= 2;
21eee2dd
TK		 296
297 list_for_each_entry(mc_entry,
298 &port->mc_list->list, list) {
52e21b1b
JBT		 299 if (num_registrations == 0)
300 goto out_update;
301
21eee2dd
TK		 302 arr[i].adh = adapter->handle;
303 arr[i].port_id = port->logical_port_id;
304 arr[i].reg_type = EHEA_BCMC_SCOPE_ALL |
305 EHEA_BCMC_MULTICAST |
306 EHEA_BCMC_UNTAGGED;
307 arr[i++].macaddr = mc_entry->macaddr;
308
309 arr[i].adh = adapter->handle;
310 arr[i].port_id = port->logical_port_id;
311 arr[i].reg_type = EHEA_BCMC_SCOPE_ALL |
312 EHEA_BCMC_MULTICAST |
313 EHEA_BCMC_VLANID_ALL;
314 arr[i++].macaddr = mc_entry->macaddr;
52e21b1b 315 num_registrations -= 2;
21eee2dd
TK		 316 }
317 }
318 }
319
320out_update:
321 kfree(ehea_bcmc_regs.arr);
322 ehea_bcmc_regs.arr = arr;
323 ehea_bcmc_regs.num_entries = i;
52e21b1b
JBT		 324out:
325 spin_unlock_irqrestore(&ehea_bcmc_regs.lock, flags);
21eee2dd
TK		 326}
327
7a291083
JBT		 328static struct net_device_stats *ehea_get_stats(struct net_device *dev)
329{
330 struct ehea_port *port = netdev_priv(dev);
331 struct net_device_stats *stats = &port->stats;
332 struct hcp_ehea_port_cb2 *cb2;
ce45b873 333 u64 hret, rx_packets, tx_packets, rx_bytes = 0, tx_bytes = 0;
7a291083
JBT		 334 int i;
335
336 memset(stats, 0, sizeof(*stats));
337
3d8009c7 338 cb2 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083 339 if (!cb2) {
cfa969e3 340 ehea_error("no mem for cb2");
7a291083
JBT		 341 goto out;
342 }
343
344 hret = ehea_h_query_ehea_port(port->adapter->handle,
345 port->logical_port_id,
346 H_PORT_CB2, H_PORT_CB2_ALL, cb2);
347 if (hret != H_SUCCESS) {
cfa969e3 348 ehea_error("query_ehea_port failed");
7a291083
JBT		 349 goto out_herr;
350 }
351
352 if (netif_msg_hw(port))
353 ehea_dump(cb2, sizeof(*cb2), "net_device_stats");
354
355 rx_packets = 0;
ce45b873 356 for (i = 0; i < port->num_def_qps; i++) {
7a291083 357 rx_packets += port->port_res[i].rx_packets;
ce45b873
BL		 358 rx_bytes += port->port_res[i].rx_bytes;
359 }
7a291083 360
7393b87c 361 tx_packets = 0;
ce45b873 362 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
7393b87c 363 tx_packets += port->port_res[i].tx_packets;
ce45b873
BL		 364 tx_bytes += port->port_res[i].tx_bytes;
365 }
7393b87c
TK		 366
367 stats->tx_packets = tx_packets;
7a291083
JBT		 368 stats->multicast = cb2->rxmcp;
369 stats->rx_errors = cb2->rxuerr;
ce45b873
BL		 370 stats->rx_bytes = rx_bytes;
371 stats->tx_bytes = tx_bytes;
7a291083
JBT		 372 stats->rx_packets = rx_packets;
373
374out_herr:
3faf2693 375 free_page((unsigned long)cb2);
7a291083
JBT		 376out:
377 return stats;
378}
379
380static void ehea_refill_rq1(struct ehea_port_res *pr, int index, int nr_of_wqes)
381{
382 struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
383 struct net_device *dev = pr->port->netdev;
384 int max_index_mask = pr->rq1_skba.len - 1;
2c69448b
JBT		 385 int fill_wqes = pr->rq1_skba.os_skbs + nr_of_wqes;
386 int adder = 0;
7a291083
JBT		 387 int i;
388
2c69448b
JBT		 389 pr->rq1_skba.os_skbs = 0;
390
391 if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) {
44fb3126
TK		 392 if (nr_of_wqes > 0)
393 pr->rq1_skba.index = index;
2c69448b 394 pr->rq1_skba.os_skbs = fill_wqes;
7a291083 395 return;
2c69448b 396 }
7a291083 397
2c69448b 398 for (i = 0; i < fill_wqes; i++) {
7a291083
JBT		 399 if (!skb_arr_rq1[index]) {
400 skb_arr_rq1[index] = netdev_alloc_skb(dev,
401 EHEA_L_PKT_SIZE);
402 if (!skb_arr_rq1[index]) {
5c7e57f7 403 ehea_info("Unable to allocate enough skb in the array\n");
2c69448b 404 pr->rq1_skba.os_skbs = fill_wqes - i;
7a291083
JBT		 405 break;
406 }
407 }
408 index--;
409 index &= max_index_mask;
2c69448b 410 adder++;
7a291083 411 }
2c69448b
JBT		 412
413 if (adder == 0)
414 return;
415
7a291083 416 /* Ring doorbell */
2c69448b 417 ehea_update_rq1a(pr->qp, adder);
7a291083
JBT		 418}
419
e2878806 420static void ehea_init_fill_rq1(struct ehea_port_res *pr, int nr_rq1a)
7a291083 421{
7a291083
JBT		 422 struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
423 struct net_device *dev = pr->port->netdev;
424 int i;
425
5c7e57f7
BL		 426 if (nr_rq1a > pr->rq1_skba.len) {
427 ehea_error("NR_RQ1A bigger than skb array len\n");
428 return;
429 }
430
431 for (i = 0; i < nr_rq1a; i++) {
7a291083 432 skb_arr_rq1[i] = netdev_alloc_skb(dev, EHEA_L_PKT_SIZE);
5c7e57f7
BL		 433 if (!skb_arr_rq1[i]) {
434 ehea_info("No enough memory to allocate skb array\n");
e2878806 435 break;
5c7e57f7 436 }
7a291083
JBT		 437 }
438 /* Ring doorbell */
5c7e57f7 439 ehea_update_rq1a(pr->qp, i);
7a291083
JBT		 440}
441
442static int ehea_refill_rq_def(struct ehea_port_res *pr,
443 struct ehea_q_skb_arr *q_skba, int rq_nr,
444 int num_wqes, int wqe_type, int packet_size)
445{
446 struct net_device *dev = pr->port->netdev;
447 struct ehea_qp *qp = pr->qp;
448 struct sk_buff **skb_arr = q_skba->arr;
449 struct ehea_rwqe *rwqe;
450 int i, index, max_index_mask, fill_wqes;
2c69448b 451 int adder = 0;
7a291083
JBT		 452 int ret = 0;
453
454 fill_wqes = q_skba->os_skbs + num_wqes;
2c69448b 455 q_skba->os_skbs = 0;
7a291083 456
2c69448b
JBT		 457 if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) {
458 q_skba->os_skbs = fill_wqes;
7a291083 459 return ret;
2c69448b 460 }
7a291083
JBT		 461
462 index = q_skba->index;
463 max_index_mask = q_skba->len - 1;
464 for (i = 0; i < fill_wqes; i++) {
2c69448b 465 u64 tmp_addr;
89d71a66
ED		 466 struct sk_buff *skb;
467
468 skb = netdev_alloc_skb_ip_align(dev, packet_size);
7a291083 469 if (!skb) {
7a291083 470 q_skba->os_skbs = fill_wqes - i;
e2878806 471 if (q_skba->os_skbs == q_skba->len - 2) {
cfa969e3
DM		 472 ehea_info("%s: rq%i ran dry - no mem for skb",
473 pr->port->netdev->name, rq_nr);
e2878806
TK		 474 ret = -ENOMEM;
475 }
7a291083
JBT		 476 break;
477 }
7a291083
JBT		 478
479 skb_arr[index] = skb;
2c69448b
JBT		 480 tmp_addr = ehea_map_vaddr(skb->data);
481 if (tmp_addr == -1) {
482 dev_kfree_skb(skb);
483 q_skba->os_skbs = fill_wqes - i;
484 ret = 0;
485 break;
486 }
7a291083
JBT		 487
488 rwqe = ehea_get_next_rwqe(qp, rq_nr);
489 rwqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, wqe_type)
d1d25aab 490 | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, index);
7a291083 491 rwqe->sg_list[0].l_key = pr->recv_mr.lkey;
2c69448b 492 rwqe->sg_list[0].vaddr = tmp_addr;
7a291083
JBT		 493 rwqe->sg_list[0].len = packet_size;
494 rwqe->data_segments = 1;
495
496 index++;
497 index &= max_index_mask;
2c69448b 498 adder++;
7a291083 499 }
44c82152 500
7a291083 501 q_skba->index = index;
2c69448b
JBT		 502 if (adder == 0)
503 goto out;
7a291083
JBT		 504
505 /* Ring doorbell */
506 iosync();
507 if (rq_nr == 2)
2c69448b 508 ehea_update_rq2a(pr->qp, adder);
7a291083 509 else
2c69448b 510 ehea_update_rq3a(pr->qp, adder);
44c82152 511out:
7a291083
JBT		 512 return ret;
513}
514
515
516static int ehea_refill_rq2(struct ehea_port_res *pr, int nr_of_wqes)
517{
518 return ehea_refill_rq_def(pr, &pr->rq2_skba, 2,
519 nr_of_wqes, EHEA_RWQE2_TYPE,
89d71a66 520 EHEA_RQ2_PKT_SIZE);
7a291083
JBT		 521}
522
523
524static int ehea_refill_rq3(struct ehea_port_res *pr, int nr_of_wqes)
525{
526 return ehea_refill_rq_def(pr, &pr->rq3_skba, 3,
527 nr_of_wqes, EHEA_RWQE3_TYPE,
89d71a66 528 EHEA_MAX_PACKET_SIZE);
7a291083
JBT		 529}
530
531static inline int ehea_check_cqe(struct ehea_cqe *cqe, int *rq_num)
532{
533 *rq_num = (cqe->type & EHEA_CQE_TYPE_RQ) >> 5;
534 if ((cqe->status & EHEA_CQE_STAT_ERR_MASK) == 0)
535 return 0;
536 if (((cqe->status & EHEA_CQE_STAT_ERR_TCP) != 0) &&
537 (cqe->header_length == 0))
538 return 0;
539 return -EINVAL;
540}
541
542static inline void ehea_fill_skb(struct net_device *dev,
543 struct sk_buff *skb, struct ehea_cqe *cqe)
544{
545 int length = cqe->num_bytes_transfered - 4; /*remove CRC */
546
547 skb_put(skb, length);
7a291083 548 skb->protocol = eth_type_trans(skb, dev);
71085ce8
BL		 549
550 /* The packet was not an IPV4 packet so a complemented checksum was
551 calculated. The value is found in the Internet Checksum field. */
552 if (cqe->status & EHEA_CQE_BLIND_CKSUM) {
553 skb->ip_summed = CHECKSUM_COMPLETE;
554 skb->csum = csum_unfold(~cqe->inet_checksum_value);
555 } else
556 skb->ip_summed = CHECKSUM_UNNECESSARY;
7a291083
JBT		 557}
558
559static inline struct sk_buff *get_skb_by_index(struct sk_buff **skb_array,
560 int arr_len,
561 struct ehea_cqe *cqe)
562{
563 int skb_index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, cqe->wr_id);
564 struct sk_buff *skb;
565 void *pref;
566 int x;
567
568 x = skb_index + 1;
569 x &= (arr_len - 1);
570
571 pref = skb_array[x];
0b2febf3
HH		 572 if (pref) {
573 prefetchw(pref);
574 prefetchw(pref + EHEA_CACHE_LINE);
575
576 pref = (skb_array[x]->data);
577 prefetch(pref);
578 prefetch(pref + EHEA_CACHE_LINE);
579 prefetch(pref + EHEA_CACHE_LINE * 2);
580 prefetch(pref + EHEA_CACHE_LINE * 3);
581 }
582
7a291083
JBT		 583 skb = skb_array[skb_index];
584 skb_array[skb_index] = NULL;
585 return skb;
586}
587
588static inline struct sk_buff *get_skb_by_index_ll(struct sk_buff **skb_array,
589 int arr_len, int wqe_index)
590{
591 struct sk_buff *skb;
592 void *pref;
593 int x;
594
595 x = wqe_index + 1;
596 x &= (arr_len - 1);
597
598 pref = skb_array[x];
0b2febf3
HH		 599 if (pref) {
600 prefetchw(pref);
601 prefetchw(pref + EHEA_CACHE_LINE);
7a291083 602
0b2febf3
HH		 603 pref = (skb_array[x]->data);
604 prefetchw(pref);
605 prefetchw(pref + EHEA_CACHE_LINE);
606 }
7a291083
JBT		 607
608 skb = skb_array[wqe_index];
609 skb_array[wqe_index] = NULL;
610 return skb;
611}
612
613static int ehea_treat_poll_error(struct ehea_port_res *pr, int rq,
614 struct ehea_cqe *cqe, int *processed_rq2,
615 int *processed_rq3)
616{
617 struct sk_buff *skb;
618
acbddb59
JBT		 619 if (cqe->status & EHEA_CQE_STAT_ERR_TCP)
620 pr->p_stats.err_tcp_cksum++;
621 if (cqe->status & EHEA_CQE_STAT_ERR_IP)
622 pr->p_stats.err_ip_cksum++;
623 if (cqe->status & EHEA_CQE_STAT_ERR_CRC)
624 pr->p_stats.err_frame_crc++;
625
7a291083
JBT		 626 if (rq == 2) {
627 *processed_rq2 += 1;
628 skb = get_skb_by_index(pr->rq2_skba.arr, pr->rq2_skba.len, cqe);
629 dev_kfree_skb(skb);
630 } else if (rq == 3) {
631 *processed_rq3 += 1;
632 skb = get_skb_by_index(pr->rq3_skba.arr, pr->rq3_skba.len, cqe);
633 dev_kfree_skb(skb);
634 }
635
636 if (cqe->status & EHEA_CQE_STAT_FAT_ERR_MASK) {
58dd8258 637 if (netif_msg_rx_err(pr->port)) {
cfa969e3
DM		 638 ehea_error("Critical receive error for QP %d. "
639 "Resetting port.", pr->qp->init_attr.qp_nr);
58dd8258
TK		 640 ehea_dump(cqe, sizeof(*cqe), "CQE");
641 }
2f69ae01 642 ehea_schedule_port_reset(pr->port);
7a291083
JBT		 643 return 1;
644 }
645
646 return 0;
647}
648
d4dc4ec9
JBT		 649static int get_skb_hdr(struct sk_buff *skb, void **iphdr,
650 void **tcph, u64 *hdr_flags, void *priv)
651{
652 struct ehea_cqe *cqe = priv;
653 unsigned int ip_len;
654 struct iphdr *iph;
655
656 /* non tcp/udp packets */
657 if (!cqe->header_length)
658 return -1;
659
660 /* non tcp packet */
661 skb_reset_network_header(skb);
662 iph = ip_hdr(skb);
663 if (iph->protocol != IPPROTO_TCP)
664 return -1;
665
666 ip_len = ip_hdrlen(skb);
667 skb_set_transport_header(skb, ip_len);
668 *tcph = tcp_hdr(skb);
669
670 /* check if ip header and tcp header are complete */
3ff2cd23 671 if (ntohs(iph->tot_len) < ip_len + tcp_hdrlen(skb))
d4dc4ec9
JBT		 672 return -1;
673
674 *hdr_flags = LRO_IPV4 | LRO_TCP;
675 *iphdr = iph;
676
677 return 0;
678}
679
680static void ehea_proc_skb(struct ehea_port_res *pr, struct ehea_cqe *cqe,
681 struct sk_buff *skb)
682{
8e95a202
JP		 683 int vlan_extracted = ((cqe->status & EHEA_CQE_VLAN_TAG_XTRACT) &&
684 pr->port->vgrp);
d4dc4ec9 685
c7757fdb 686 if (skb->dev->features & NETIF_F_LRO) {
d4dc4ec9
JBT		 687 if (vlan_extracted)
688 lro_vlan_hwaccel_receive_skb(&pr->lro_mgr, skb,
689 pr->port->vgrp,
690 cqe->vlan_tag,
691 cqe);
692 else
693 lro_receive_skb(&pr->lro_mgr, skb, cqe);
694 } else {
695 if (vlan_extracted)
696 vlan_hwaccel_receive_skb(skb, pr->port->vgrp,
697 cqe->vlan_tag);
698 else
699 netif_receive_skb(skb);
700 }
701}
702
bea3348e
SH		 703static int ehea_proc_rwqes(struct net_device *dev,
704 struct ehea_port_res *pr,
705 int budget)
7a291083 706{
18604c54 707 struct ehea_port *port = pr->port;
7a291083
JBT		 708 struct ehea_qp *qp = pr->qp;
709 struct ehea_cqe *cqe;
710 struct sk_buff *skb;
711 struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
712 struct sk_buff **skb_arr_rq2 = pr->rq2_skba.arr;
713 struct sk_buff **skb_arr_rq3 = pr->rq3_skba.arr;
714 int skb_arr_rq1_len = pr->rq1_skba.len;
715 int skb_arr_rq2_len = pr->rq2_skba.len;
716 int skb_arr_rq3_len = pr->rq3_skba.len;
717 int processed, processed_rq1, processed_rq2, processed_rq3;
ce45b873 718 u64 processed_bytes = 0;
bea3348e 719 int wqe_index, last_wqe_index, rq, port_reset;
7a291083
JBT		 720
721 processed = processed_rq1 = processed_rq2 = processed_rq3 = 0;
722 last_wqe_index = 0;
7a291083 723
7a291083 724 cqe = ehea_poll_rq1(qp, &wqe_index);
bea3348e 725 while ((processed < budget) && cqe) {
7a291083
JBT		 726 ehea_inc_rq1(qp);
727 processed_rq1++;
728 processed++;
7a291083
JBT		 729 if (netif_msg_rx_status(port))
730 ehea_dump(cqe, sizeof(*cqe), "CQE");
731
732 last_wqe_index = wqe_index;
733 rmb();
734 if (!ehea_check_cqe(cqe, &rq)) {
508d2b5d
DM		 735 if (rq == 1) {
736 /* LL RQ1 */
7a291083
JBT		 737 skb = get_skb_by_index_ll(skb_arr_rq1,
738 skb_arr_rq1_len,
739 wqe_index);
740 if (unlikely(!skb)) {
cfa969e3
DM		 741 if (netif_msg_rx_err(port))
742 ehea_error("LL rq1: skb=NULL");
18604c54 743
bea3348e 744 skb = netdev_alloc_skb(dev,
7a291083 745 EHEA_L_PKT_SIZE);
5c7e57f7
BL		 746 if (!skb) {
747 ehea_info("Not enough memory to allocate skb\n");
7a291083 748 break;
5c7e57f7 749 }
7a291083 750 }
508d2b5d 751 skb_copy_to_linear_data(skb, ((char *)cqe) + 64,
d1d25aab 752 cqe->num_bytes_transfered - 4);
bea3348e 753 ehea_fill_skb(dev, skb, cqe);
508d2b5d
DM		 754 } else if (rq == 2) {
755 /* RQ2 */
7a291083
JBT		 756 skb = get_skb_by_index(skb_arr_rq2,
757 skb_arr_rq2_len, cqe);
758 if (unlikely(!skb)) {
cfa969e3
DM		 759 if (netif_msg_rx_err(port))
760 ehea_error("rq2: skb=NULL");
7a291083
JBT		 761 break;
762 }
bea3348e 763 ehea_fill_skb(dev, skb, cqe);
7a291083 764 processed_rq2++;
508d2b5d
DM		 765 } else {
766 /* RQ3 */
7a291083
JBT		 767 skb = get_skb_by_index(skb_arr_rq3,
768 skb_arr_rq3_len, cqe);
769 if (unlikely(!skb)) {
cfa969e3
DM		 770 if (netif_msg_rx_err(port))
771 ehea_error("rq3: skb=NULL");
7a291083
JBT		 772 break;
773 }
bea3348e 774 ehea_fill_skb(dev, skb, cqe);
7a291083
JBT		 775 processed_rq3++;
776 }
777
ce45b873 778 processed_bytes += skb->len;
d4dc4ec9 779 ehea_proc_skb(pr, cqe, skb);
18604c54 780 } else {
acbddb59 781 pr->p_stats.poll_receive_errors++;
7a291083
JBT		 782 port_reset = ehea_treat_poll_error(pr, rq, cqe,
783 &processed_rq2,
784 &processed_rq3);
785 if (port_reset)
786 break;
787 }
788 cqe = ehea_poll_rq1(qp, &wqe_index);
789 }
c7757fdb 790 if (dev->features & NETIF_F_LRO)
d4dc4ec9 791 lro_flush_all(&pr->lro_mgr);
7a291083 792
7a291083 793 pr->rx_packets += processed;
ce45b873 794 pr->rx_bytes += processed_bytes;
7a291083
JBT		 795
796 ehea_refill_rq1(pr, last_wqe_index, processed_rq1);
797 ehea_refill_rq2(pr, processed_rq2);
798 ehea_refill_rq3(pr, processed_rq3);
799
bea3348e 800 return processed;
7a291083
JBT		 801}
802
2928db4c
AD		 803#define SWQE_RESTART_CHECK 0xdeadbeaff00d0000ull
804
805static void reset_sq_restart_flag(struct ehea_port *port)
806{
807 int i;
808
809 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
810 struct ehea_port_res *pr = &port->port_res[i];
811 pr->sq_restart_flag = 0;
812 }
a8bb69f7 813 wake_up(&port->restart_wq);
2928db4c
AD		 814}
815
816static void check_sqs(struct ehea_port *port)
817{
818 struct ehea_swqe *swqe;
819 int swqe_index;
820 int i, k;
821
822 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
823 struct ehea_port_res *pr = &port->port_res[i];
a8bb69f7 824 int ret;
2928db4c
AD		 825 k = 0;
826 swqe = ehea_get_swqe(pr->qp, &swqe_index);
827 memset(swqe, 0, SWQE_HEADER_SIZE);
828 atomic_dec(&pr->swqe_avail);
829
830 swqe->tx_control |= EHEA_SWQE_PURGE;
831 swqe->wr_id = SWQE_RESTART_CHECK;
832 swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
833 swqe->tx_control |= EHEA_SWQE_IMM_DATA_PRESENT;
834 swqe->immediate_data_length = 80;
835
836 ehea_post_swqe(pr->qp, swqe);
837
a8bb69f7
BL		 838 ret = wait_event_timeout(port->restart_wq,
839 pr->sq_restart_flag == 0,
840 msecs_to_jiffies(100));
841
842 if (!ret) {
cfa969e3 843 ehea_error("HW/SW queues out of sync");
a8bb69f7
BL		 844 ehea_schedule_port_reset(pr->port);
845 return;
2928db4c
AD		 846 }
847 }
2928db4c
AD		 848}
849
850
18604c54 851static struct ehea_cqe *ehea_proc_cqes(struct ehea_port_res *pr, int my_quota)
7a291083 852{
acbddb59 853 struct sk_buff *skb;
7a291083
JBT		 854 struct ehea_cq *send_cq = pr->send_cq;
855 struct ehea_cqe *cqe;
18604c54 856 int quota = my_quota;
7a291083
JBT		 857 int cqe_counter = 0;
858 int swqe_av = 0;
acbddb59 859 int index;
7a291083
JBT		 860 unsigned long flags;
861
18604c54 862 cqe = ehea_poll_cq(send_cq);
508d2b5d 863 while (cqe && (quota > 0)) {
18604c54
JBT		 864 ehea_inc_cq(send_cq);
865
7a291083
JBT		 866 cqe_counter++;
867 rmb();
2928db4c
AD		 868
869 if (cqe->wr_id == SWQE_RESTART_CHECK) {
870 pr->sq_restart_flag = 1;
871 swqe_av++;
872 break;
873 }
874
7a291083 875 if (cqe->status & EHEA_CQE_STAT_ERR_MASK) {
cfa969e3
DM		 876 ehea_error("Bad send completion status=0x%04X",
877 cqe->status);
ea96ceac 878
7a291083
JBT		 879 if (netif_msg_tx_err(pr->port))
880 ehea_dump(cqe, sizeof(*cqe), "Send CQE");
ea96ceac
TK		 881
882 if (cqe->status & EHEA_CQE_STAT_RESET_MASK) {
cfa969e3 883 ehea_error("Resetting port");
ea96ceac
TK		 884 ehea_schedule_port_reset(pr->port);
885 break;
886 }
7a291083
JBT		 887 }
888
889 if (netif_msg_tx_done(pr->port))
890 ehea_dump(cqe, sizeof(*cqe), "CQE");
891
892 if (likely(EHEA_BMASK_GET(EHEA_WR_ID_TYPE, cqe->wr_id)
acbddb59
JBT		 893 == EHEA_SWQE2_TYPE)) {
894
895 index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, cqe->wr_id);
896 skb = pr->sq_skba.arr[index];
897 dev_kfree_skb(skb);
898 pr->sq_skba.arr[index] = NULL;
899 }
7a291083
JBT		 900
901 swqe_av += EHEA_BMASK_GET(EHEA_WR_ID_REFILL, cqe->wr_id);
902 quota--;
18604c54
JBT		 903
904 cqe = ehea_poll_cq(send_cq);
ee289b64 905 }
7a291083
JBT		 906
907 ehea_update_feca(send_cq, cqe_counter);
908 atomic_add(swqe_av, &pr->swqe_avail);
909
910 spin_lock_irqsave(&pr->netif_queue, flags);
18604c54 911
7a291083
JBT		 912 if (pr->queue_stopped && (atomic_read(&pr->swqe_avail)
913 >= pr->swqe_refill_th)) {
914 netif_wake_queue(pr->port->netdev);
915 pr->queue_stopped = 0;
916 }
917 spin_unlock_irqrestore(&pr->netif_queue, flags);
5b27d427 918 wake_up(&pr->port->swqe_avail_wq);
7a291083 919
18604c54 920 return cqe;
7a291083
JBT		 921}
922
18604c54 923#define EHEA_NAPI_POLL_NUM_BEFORE_IRQ 16
bea3348e 924#define EHEA_POLL_MAX_CQES 65535
18604c54 925
bea3348e 926static int ehea_poll(struct napi_struct *napi, int budget)
7a291083 927{
508d2b5d
DM		 928 struct ehea_port_res *pr = container_of(napi, struct ehea_port_res,
929 napi);
bea3348e 930 struct net_device *dev = pr->port->netdev;
18604c54
JBT		 931 struct ehea_cqe *cqe;
932 struct ehea_cqe *cqe_skb = NULL;
933 int force_irq, wqe_index;
bea3348e 934 int rx = 0;
18604c54
JBT		 935
936 force_irq = (pr->poll_counter > EHEA_NAPI_POLL_NUM_BEFORE_IRQ);
bea3348e
SH		 937 cqe_skb = ehea_proc_cqes(pr, EHEA_POLL_MAX_CQES);
938
939 if (!force_irq)
940 rx += ehea_proc_rwqes(dev, pr, budget - rx);
18604c54 941
bea3348e 942 while ((rx != budget) || force_irq) {
18604c54 943 pr->poll_counter = 0;
bea3348e 944 force_irq = 0;
288379f0 945 napi_complete(napi);
18604c54
JBT		 946 ehea_reset_cq_ep(pr->recv_cq);
947 ehea_reset_cq_ep(pr->send_cq);
948 ehea_reset_cq_n1(pr->recv_cq);
949 ehea_reset_cq_n1(pr->send_cq);
a91fb143 950 rmb();
18604c54
JBT		 951 cqe = ehea_poll_rq1(pr->qp, &wqe_index);
952 cqe_skb = ehea_poll_cq(pr->send_cq);
953
e542aa6b 954 if (!cqe && !cqe_skb)
bea3348e 955 return rx;
18604c54 956
288379f0 957 if (!napi_reschedule(napi))
bea3348e 958 return rx;
18604c54 959
bea3348e
SH		 960 cqe_skb = ehea_proc_cqes(pr, EHEA_POLL_MAX_CQES);
961 rx += ehea_proc_rwqes(dev, pr, budget - rx);
962 }
e542aa6b 963
bea3348e
SH		 964 pr->poll_counter++;
965 return rx;
7a291083
JBT		 966}
967
8d22c971
JBT		 968#ifdef CONFIG_NET_POLL_CONTROLLER
969static void ehea_netpoll(struct net_device *dev)
970{
971 struct ehea_port *port = netdev_priv(dev);
bea3348e 972 int i;
8d22c971 973
bea3348e 974 for (i = 0; i < port->num_def_qps; i++)
288379f0 975 napi_schedule(&port->port_res[i].napi);
8d22c971
JBT		 976}
977#endif
978
7d12e780 979static irqreturn_t ehea_recv_irq_handler(int irq, void *param)
7a291083
JBT		 980{
981 struct ehea_port_res *pr = param;
18604c54 982
288379f0 983 napi_schedule(&pr->napi);
18604c54 984
7a291083
JBT		 985 return IRQ_HANDLED;
986}
987
7d12e780 988static irqreturn_t ehea_qp_aff_irq_handler(int irq, void *param)
7a291083
JBT		 989{
990 struct ehea_port *port = param;
991 struct ehea_eqe *eqe;
d2db9eea 992 struct ehea_qp *qp;
7a291083 993 u32 qp_token;
ea96ceac
TK		 994 u64 resource_type, aer, aerr;
995 int reset_port = 0;
7a291083
JBT		 996
997 eqe = ehea_poll_eq(port->qp_eq);
bb3a6449 998
7a291083 999 while (eqe) {
7a291083 1000 qp_token = EHEA_BMASK_GET(EHEA_EQE_QP_TOKEN, eqe->entry);
cfa969e3
DM		 1001 ehea_error("QP aff_err: entry=0x%llx, token=0x%x",
1002 eqe->entry, qp_token);
d2db9eea
JBT		 1003
1004 qp = port->port_res[qp_token].qp;
ea96ceac
TK		 1005
1006 resource_type = ehea_error_data(port->adapter, qp->fw_handle,
1007 &aer, &aerr);
1008
1009 if (resource_type == EHEA_AER_RESTYPE_QP) {
1010 if ((aer & EHEA_AER_RESET_MASK) ||
1011 (aerr & EHEA_AERR_RESET_MASK))
1012 reset_port = 1;
1013 } else
1014 reset_port = 1; /* Reset in case of CQ or EQ error */
1015
bb3a6449 1016 eqe = ehea_poll_eq(port->qp_eq);
7a291083
JBT		 1017 }
1018
ea96ceac 1019 if (reset_port) {
cfa969e3 1020 ehea_error("Resetting port");
ea96ceac
TK		 1021 ehea_schedule_port_reset(port);
1022 }
d2db9eea 1023
7a291083
JBT		 1024 return IRQ_HANDLED;
1025}
1026
1027static struct ehea_port *ehea_get_port(struct ehea_adapter *adapter,
1028 int logical_port)
1029{
1030 int i;
1031
1acf2318 1032 for (i = 0; i < EHEA_MAX_PORTS; i++)
41b69c70 1033 if (adapter->port[i])
d1d25aab 1034 if (adapter->port[i]->logical_port_id == logical_port)
41b69c70 1035 return adapter->port[i];
7a291083
JBT		 1036 return NULL;
1037}
1038
1039int ehea_sense_port_attr(struct ehea_port *port)
1040{
1041 int ret;
1042 u64 hret;
1043 struct hcp_ehea_port_cb0 *cb0;
1044
508d2b5d 1045 /* may be called via ehea_neq_tasklet() */
3faf2693 1046 cb0 = (void *)get_zeroed_page(GFP_ATOMIC);
508d2b5d 1047 if (!cb0) {
cfa969e3 1048 ehea_error("no mem for cb0");
7a291083
JBT		 1049 ret = -ENOMEM;
1050 goto out;
1051 }
1052
1053 hret = ehea_h_query_ehea_port(port->adapter->handle,
1054 port->logical_port_id, H_PORT_CB0,
1055 EHEA_BMASK_SET(H_PORT_CB0_ALL, 0xFFFF),
1056 cb0);
1057 if (hret != H_SUCCESS) {
1058 ret = -EIO;
1059 goto out_free;
1060 }
1061
1062 /* MAC address */
1063 port->mac_addr = cb0->port_mac_addr << 16;
1064
508d2b5d 1065 if (!is_valid_ether_addr((u8 *)&port->mac_addr)) {
7a291083
JBT		 1066 ret = -EADDRNOTAVAIL;
1067 goto out_free;
1068 }
1069
1070 /* Port speed */
1071 switch (cb0->port_speed) {
1072 case H_SPEED_10M_H:
1073 port->port_speed = EHEA_SPEED_10M;
1074 port->full_duplex = 0;
1075 break;
1076 case H_SPEED_10M_F:
1077 port->port_speed = EHEA_SPEED_10M;
1078 port->full_duplex = 1;
1079 break;
1080 case H_SPEED_100M_H:
1081 port->port_speed = EHEA_SPEED_100M;
1082 port->full_duplex = 0;
1083 break;
1084 case H_SPEED_100M_F:
1085 port->port_speed = EHEA_SPEED_100M;
1086 port->full_duplex = 1;
1087 break;
1088 case H_SPEED_1G_F:
1089 port->port_speed = EHEA_SPEED_1G;
1090 port->full_duplex = 1;
1091 break;
1092 case H_SPEED_10G_F:
1093 port->port_speed = EHEA_SPEED_10G;
1094 port->full_duplex = 1;
1095 break;
1096 default:
1097 port->port_speed = 0;
1098 port->full_duplex = 0;
1099 break;
1100 }
1101
e919b593 1102 port->autoneg = 1;
18604c54 1103 port->num_mcs = cb0->num_default_qps;
e919b593 1104
7a291083 1105 /* Number of default QPs */
18604c54
JBT		 1106 if (use_mcs)
1107 port->num_def_qps = cb0->num_default_qps;
1108 else
1109 port->num_def_qps = 1;
7a291083
JBT		 1110
1111 if (!port->num_def_qps) {
1112 ret = -EINVAL;
1113 goto out_free;
1114 }
1115
18604c54
JBT		 1116 port->num_tx_qps = num_tx_qps;
1117
1118 if (port->num_def_qps >= port->num_tx_qps)
7a291083
JBT		 1119 port->num_add_tx_qps = 0;
1120 else
18604c54 1121 port->num_add_tx_qps = port->num_tx_qps - port->num_def_qps;
7a291083
JBT		 1122
1123 ret = 0;
1124out_free:
1125 if (ret || netif_msg_probe(port))
1126 ehea_dump(cb0, sizeof(*cb0), "ehea_sense_port_attr");
3faf2693 1127 free_page((unsigned long)cb0);
7a291083
JBT		 1128out:
1129 return ret;
1130}
1131
1132int ehea_set_portspeed(struct ehea_port *port, u32 port_speed)
1133{
1134 struct hcp_ehea_port_cb4 *cb4;
1135 u64 hret;
1136 int ret = 0;
1137
3faf2693 1138 cb4 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083 1139 if (!cb4) {
cfa969e3 1140 ehea_error("no mem for cb4");
7a291083
JBT		 1141 ret = -ENOMEM;
1142 goto out;
1143 }
1144
1145 cb4->port_speed = port_speed;
1146
1147 netif_carrier_off(port->netdev);
1148
1149 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1150 port->logical_port_id,
1151 H_PORT_CB4, H_PORT_CB4_SPEED, cb4);
1152 if (hret == H_SUCCESS) {
1153 port->autoneg = port_speed == EHEA_SPEED_AUTONEG ? 1 : 0;
1154
1155 hret = ehea_h_query_ehea_port(port->adapter->handle,
1156 port->logical_port_id,
1157 H_PORT_CB4, H_PORT_CB4_SPEED,
1158 cb4);
1159 if (hret == H_SUCCESS) {
1160 switch (cb4->port_speed) {
1161 case H_SPEED_10M_H:
1162 port->port_speed = EHEA_SPEED_10M;
1163 port->full_duplex = 0;
1164 break;
1165 case H_SPEED_10M_F:
1166 port->port_speed = EHEA_SPEED_10M;
1167 port->full_duplex = 1;
1168 break;
1169 case H_SPEED_100M_H:
1170 port->port_speed = EHEA_SPEED_100M;
1171 port->full_duplex = 0;
1172 break;
1173 case H_SPEED_100M_F:
1174 port->port_speed = EHEA_SPEED_100M;
1175 port->full_duplex = 1;
1176 break;
1177 case H_SPEED_1G_F:
1178 port->port_speed = EHEA_SPEED_1G;
1179 port->full_duplex = 1;
1180 break;
1181 case H_SPEED_10G_F:
1182 port->port_speed = EHEA_SPEED_10G;
1183 port->full_duplex = 1;
1184 break;
1185 default:
1186 port->port_speed = 0;
1187 port->full_duplex = 0;
1188 break;
1189 }
1190 } else {
cfa969e3 1191 ehea_error("Failed sensing port speed");
7a291083
JBT		 1192 ret = -EIO;
1193 }
1194 } else {
1195 if (hret == H_AUTHORITY) {
cfa969e3 1196 ehea_info("Hypervisor denied setting port speed");
7a291083
JBT		 1197 ret = -EPERM;
1198 } else {
1199 ret = -EIO;
cfa969e3 1200 ehea_error("Failed setting port speed");
7a291083
JBT		 1201 }
1202 }
8759cf76
JBT		 1203 if (!prop_carrier_state || (port->phy_link == EHEA_PHY_LINK_UP))
1204 netif_carrier_on(port->netdev);
1205
3faf2693 1206 free_page((unsigned long)cb4);
7a291083
JBT		 1207out:
1208 return ret;
1209}
1210
1211static void ehea_parse_eqe(struct ehea_adapter *adapter, u64 eqe)
1212{
1213 int ret;
1214 u8 ec;
1215 u8 portnum;
1216 struct ehea_port *port;
1217
1218 ec = EHEA_BMASK_GET(NEQE_EVENT_CODE, eqe);
1219 portnum = EHEA_BMASK_GET(NEQE_PORTNUM, eqe);
1220 port = ehea_get_port(adapter, portnum);
1221
1222 switch (ec) {
1223 case EHEA_EC_PORTSTATE_CHG: /* port state change */
1224
1225 if (!port) {
cfa969e3 1226 ehea_error("unknown portnum %x", portnum);
7a291083
JBT		 1227 break;
1228 }
1229
1230 if (EHEA_BMASK_GET(NEQE_PORT_UP, eqe)) {
cfa969e3 1231 if (!netif_carrier_ok(port->netdev)) {
1e1675cc 1232 ret = ehea_sense_port_attr(port);
7a291083 1233 if (ret) {
cfa969e3
DM		 1234 ehea_error("failed resensing port "
1235 "attributes");
7a291083
JBT		 1236 break;
1237 }
1238
cfa969e3
DM		 1239 if (netif_msg_link(port))
1240 ehea_info("%s: Logical port up: %dMbps "
1241 "%s Duplex",
1242 port->netdev->name,
1243 port->port_speed,
1244 port->full_duplex ==
1245 1 ? "Full" : "Half");
7a291083 1246
cfa969e3
DM		 1247 netif_carrier_on(port->netdev);
1248 netif_wake_queue(port->netdev);
7a291083
JBT		 1249 }
1250 } else
cfa969e3
DM		 1251 if (netif_carrier_ok(port->netdev)) {
1252 if (netif_msg_link(port))
1253 ehea_info("%s: Logical port down",
1254 port->netdev->name);
1255 netif_carrier_off(port->netdev);
1256 netif_stop_queue(port->netdev);
7a291083
JBT		 1257 }
1258
1259 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PORT_UP, eqe)) {
8759cf76 1260 port->phy_link = EHEA_PHY_LINK_UP;
cfa969e3
DM		 1261 if (netif_msg_link(port))
1262 ehea_info("%s: Physical port up",
1263 port->netdev->name);
8759cf76 1264 if (prop_carrier_state)
cfa969e3 1265 netif_carrier_on(port->netdev);
7a291083 1266 } else {
8759cf76 1267 port->phy_link = EHEA_PHY_LINK_DOWN;
cfa969e3
DM		 1268 if (netif_msg_link(port))
1269 ehea_info("%s: Physical port down",
1270 port->netdev->name);
8759cf76 1271 if (prop_carrier_state)
cfa969e3 1272 netif_carrier_off(port->netdev);
7a291083
JBT		 1273 }
1274
1275 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PRIMARY, eqe))
cfa969e3 1276 ehea_info("External switch port is primary port");
7a291083 1277 else
cfa969e3 1278 ehea_info("External switch port is backup port");
7a291083
JBT		 1279
1280 break;
1281 case EHEA_EC_ADAPTER_MALFUNC:
cfa969e3 1282 ehea_error("Adapter malfunction");
7a291083
JBT		 1283 break;
1284 case EHEA_EC_PORT_MALFUNC:
cfa969e3
DM		 1285 ehea_info("Port malfunction: Device: %s", port->netdev->name);
1286 netif_carrier_off(port->netdev);
1287 netif_stop_queue(port->netdev);
7a291083
JBT		 1288 break;
1289 default:
cfa969e3 1290 ehea_error("unknown event code %x, eqe=0x%llX", ec, eqe);
7a291083
JBT		 1291 break;
1292 }
1293}
1294
1295static void ehea_neq_tasklet(unsigned long data)
1296{
508d2b5d 1297 struct ehea_adapter *adapter = (struct ehea_adapter *)data;
7a291083
JBT		 1298 struct ehea_eqe *eqe;
1299 u64 event_mask;
1300
1301 eqe = ehea_poll_eq(adapter->neq);
cfa969e3 1302 ehea_debug("eqe=%p", eqe);
7a291083
JBT		 1303
1304 while (eqe) {
cfa969e3 1305 ehea_debug("*eqe=%lx", eqe->entry);
7a291083
JBT		 1306 ehea_parse_eqe(adapter, eqe->entry);
1307 eqe = ehea_poll_eq(adapter->neq);
cfa969e3 1308 ehea_debug("next eqe=%p", eqe);
7a291083
JBT		 1309 }
1310
1311 event_mask = EHEA_BMASK_SET(NELR_PORTSTATE_CHG, 1)
1312 | EHEA_BMASK_SET(NELR_ADAPTER_MALFUNC, 1)
1313 | EHEA_BMASK_SET(NELR_PORT_MALFUNC, 1);
1314
1315 ehea_h_reset_events(adapter->handle,
1316 adapter->neq->fw_handle, event_mask);
1317}
1318
7d12e780 1319static irqreturn_t ehea_interrupt_neq(int irq, void *param)
7a291083
JBT		 1320{
1321 struct ehea_adapter *adapter = param;
1322 tasklet_hi_schedule(&adapter->neq_tasklet);
1323 return IRQ_HANDLED;
1324}
1325
1326
1327static int ehea_fill_port_res(struct ehea_port_res *pr)
1328{
1329 int ret;
1330 struct ehea_qp_init_attr *init_attr = &pr->qp->init_attr;
1331
e2878806
TK		 1332 ehea_init_fill_rq1(pr, init_attr->act_nr_rwqes_rq1
1333 - init_attr->act_nr_rwqes_rq2
1334 - init_attr->act_nr_rwqes_rq3 - 1);
7a291083 1335
e2878806 1336 ret = ehea_refill_rq2(pr, init_attr->act_nr_rwqes_rq2 - 1);
7a291083
JBT		 1337
1338 ret |= ehea_refill_rq3(pr, init_attr->act_nr_rwqes_rq3 - 1);
1339
1340 return ret;
1341}
1342
1343static int ehea_reg_interrupts(struct net_device *dev)
1344{
1345 struct ehea_port *port = netdev_priv(dev);
1346 struct ehea_port_res *pr;
1347 int i, ret;
1348
7a291083
JBT		 1349
1350 snprintf(port->int_aff_name, EHEA_IRQ_NAME_SIZE - 1, "%s-aff",
1351 dev->name);
1352
6b08f3ae 1353 ret = ibmebus_request_irq(port->qp_eq->attr.ist1,
7a291083 1354 ehea_qp_aff_irq_handler,
38515e90 1355 IRQF_DISABLED, port->int_aff_name, port);
7a291083 1356 if (ret) {
cfa969e3
DM		 1357 ehea_error("failed registering irq for qp_aff_irq_handler:"
1358 "ist=%X", port->qp_eq->attr.ist1);
7a291083
JBT		 1359 goto out_free_qpeq;
1360 }
1361
cfa969e3
DM		 1362 if (netif_msg_ifup(port))
1363 ehea_info("irq_handle 0x%X for function qp_aff_irq_handler "
1364 "registered", port->qp_eq->attr.ist1);
7a291083 1365
18604c54 1366
7a291083
JBT		 1367 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
1368 pr = &port->port_res[i];
1369 snprintf(pr->int_send_name, EHEA_IRQ_NAME_SIZE - 1,
18604c54 1370 "%s-queue%d", dev->name, i);
6b08f3ae 1371 ret = ibmebus_request_irq(pr->eq->attr.ist1,
18604c54 1372 ehea_recv_irq_handler,
38515e90 1373 IRQF_DISABLED, pr->int_send_name,
7a291083
JBT		 1374 pr);
1375 if (ret) {
cfa969e3
DM		 1376 ehea_error("failed registering irq for ehea_queue "
1377 "port_res_nr:%d, ist=%X", i,
1378 pr->eq->attr.ist1);
7a291083
JBT		 1379 goto out_free_req;
1380 }
cfa969e3
DM		 1381 if (netif_msg_ifup(port))
1382 ehea_info("irq_handle 0x%X for function ehea_queue_int "
1383 "%d registered", pr->eq->attr.ist1, i);
7a291083
JBT		 1384 }
1385out:
1386 return ret;
1387
18604c54 1388
7a291083
JBT		 1389out_free_req:
1390 while (--i >= 0) {
18604c54 1391 u32 ist = port->port_res[i].eq->attr.ist1;
6b08f3ae 1392 ibmebus_free_irq(ist, &port->port_res[i]);
7a291083 1393 }
18604c54 1394
7a291083 1395out_free_qpeq:
6b08f3ae 1396 ibmebus_free_irq(port->qp_eq->attr.ist1, port);
7a291083 1397 i = port->num_def_qps;
18604c54 1398
7a291083 1399 goto out;
18604c54 1400
7a291083
JBT		 1401}
1402
1403static void ehea_free_interrupts(struct net_device *dev)
1404{
1405 struct ehea_port *port = netdev_priv(dev);
1406 struct ehea_port_res *pr;
1407 int i;
1408
1409 /* send */
18604c54 1410
7a291083
JBT		 1411 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
1412 pr = &port->port_res[i];
6b08f3ae 1413 ibmebus_free_irq(pr->eq->attr.ist1, pr);
cfa969e3
DM		 1414 if (netif_msg_intr(port))
1415 ehea_info("free send irq for res %d with handle 0x%X",
1416 i, pr->eq->attr.ist1);
7a291083
JBT		 1417 }
1418
1419 /* associated events */
6b08f3ae 1420 ibmebus_free_irq(port->qp_eq->attr.ist1, port);
cfa969e3
DM		 1421 if (netif_msg_intr(port))
1422 ehea_info("associated event interrupt for handle 0x%X freed",
1423 port->qp_eq->attr.ist1);
7a291083
JBT		 1424}
1425
1426static int ehea_configure_port(struct ehea_port *port)
1427{
1428 int ret, i;
1429 u64 hret, mask;
1430 struct hcp_ehea_port_cb0 *cb0;
1431
1432 ret = -ENOMEM;
3faf2693 1433 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083
JBT		 1434 if (!cb0)
1435 goto out;
1436
1437 cb0->port_rc = EHEA_BMASK_SET(PXLY_RC_VALID, 1)
1438 | EHEA_BMASK_SET(PXLY_RC_IP_CHKSUM, 1)
1439 | EHEA_BMASK_SET(PXLY_RC_TCP_UDP_CHKSUM, 1)
1440 | EHEA_BMASK_SET(PXLY_RC_VLAN_XTRACT, 1)
1441 | EHEA_BMASK_SET(PXLY_RC_VLAN_TAG_FILTER,
1442 PXLY_RC_VLAN_FILTER)
1443 | EHEA_BMASK_SET(PXLY_RC_JUMBO_FRAME, 1);
1444
18604c54
JBT		 1445 for (i = 0; i < port->num_mcs; i++)
1446 if (use_mcs)
1447 cb0->default_qpn_arr[i] =
1448 port->port_res[i].qp->init_attr.qp_nr;
1449 else
1450 cb0->default_qpn_arr[i] =
1451 port->port_res[0].qp->init_attr.qp_nr;
e542aa6b 1452
7a291083
JBT		 1453 if (netif_msg_ifup(port))
1454 ehea_dump(cb0, sizeof(*cb0), "ehea_configure_port");
1455
1456 mask = EHEA_BMASK_SET(H_PORT_CB0_PRC, 1)
1457 | EHEA_BMASK_SET(H_PORT_CB0_DEFQPNARRAY, 1);
1458
1459 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1460 port->logical_port_id,
1461 H_PORT_CB0, mask, cb0);
1462 ret = -EIO;
1463 if (hret != H_SUCCESS)
1464 goto out_free;
1465
1466 ret = 0;
1467
1468out_free:
3faf2693 1469 free_page((unsigned long)cb0);
7a291083
JBT		 1470out:
1471 return ret;
1472}
1473
e542aa6b 1474int ehea_gen_smrs(struct ehea_port_res *pr)
7a291083 1475{
e542aa6b 1476 int ret;
7a291083
JBT		 1477 struct ehea_adapter *adapter = pr->port->adapter;
1478
e542aa6b
JBT		 1479 ret = ehea_gen_smr(adapter, &adapter->mr, &pr->send_mr);
1480 if (ret)
7a291083
JBT		 1481 goto out;
1482
e542aa6b
JBT		 1483 ret = ehea_gen_smr(adapter, &adapter->mr, &pr->recv_mr);
1484 if (ret)
1485 goto out_free;
7a291083
JBT		 1486
1487 return 0;
1488
e542aa6b
JBT		 1489out_free:
1490 ehea_rem_mr(&pr->send_mr);
7a291083 1491out:
cfa969e3 1492 ehea_error("Generating SMRS failed\n");
7a291083
JBT		 1493 return -EIO;
1494}
1495
e542aa6b 1496int ehea_rem_smrs(struct ehea_port_res *pr)
7a291083 1497{
8e95a202
JP		 1498 if ((ehea_rem_mr(&pr->send_mr)) ||
1499 (ehea_rem_mr(&pr->recv_mr)))
e542aa6b
JBT		 1500 return -EIO;
1501 else
1502 return 0;
7a291083
JBT		 1503}
1504
1505static int ehea_init_q_skba(struct ehea_q_skb_arr *q_skba, int max_q_entries)
1506{
508d2b5d 1507 int arr_size = sizeof(void *) * max_q_entries;
7a291083 1508
89bf67f1 1509 q_skba->arr = vzalloc(arr_size);
7a291083
JBT		 1510 if (!q_skba->arr)
1511 return -ENOMEM;
1512
7a291083
JBT		 1513 q_skba->len = max_q_entries;
1514 q_skba->index = 0;
1515 q_skba->os_skbs = 0;
1516
1517 return 0;
1518}
1519
1520static int ehea_init_port_res(struct ehea_port *port, struct ehea_port_res *pr,
1521 struct port_res_cfg *pr_cfg, int queue_token)
1522{
1523 struct ehea_adapter *adapter = port->adapter;
1524 enum ehea_eq_type eq_type = EHEA_EQ;
1525 struct ehea_qp_init_attr *init_attr = NULL;
1526 int ret = -EIO;
ce45b873
BL		 1527 u64 tx_bytes, rx_bytes, tx_packets, rx_packets;
1528
1529 tx_bytes = pr->tx_bytes;
1530 tx_packets = pr->tx_packets;
1531 rx_bytes = pr->rx_bytes;
1532 rx_packets = pr->rx_packets;
7a291083
JBT		 1533
1534 memset(pr, 0, sizeof(struct ehea_port_res));
1535
ce45b873
BL		 1536 pr->tx_bytes = rx_bytes;
1537 pr->tx_packets = tx_packets;
1538 pr->rx_bytes = rx_bytes;
1539 pr->rx_packets = rx_packets;
1540
7a291083 1541 pr->port = port;
7a291083
JBT		 1542 spin_lock_init(&pr->xmit_lock);
1543 spin_lock_init(&pr->netif_queue);
1544
18604c54
JBT		 1545 pr->eq = ehea_create_eq(adapter, eq_type, EHEA_MAX_ENTRIES_EQ, 0);
1546 if (!pr->eq) {
cfa969e3 1547 ehea_error("create_eq failed (eq)");
7a291083
JBT		 1548 goto out_free;
1549 }
1550
1551 pr->recv_cq = ehea_create_cq(adapter, pr_cfg->max_entries_rcq,
18604c54 1552 pr->eq->fw_handle,
7a291083
JBT		 1553 port->logical_port_id);
1554 if (!pr->recv_cq) {
cfa969e3 1555 ehea_error("create_cq failed (cq_recv)");
7a291083
JBT		 1556 goto out_free;
1557 }
1558
1559 pr->send_cq = ehea_create_cq(adapter, pr_cfg->max_entries_scq,
18604c54 1560 pr->eq->fw_handle,
7a291083
JBT		 1561 port->logical_port_id);
1562 if (!pr->send_cq) {
cfa969e3 1563 ehea_error("create_cq failed (cq_send)");
7a291083
JBT		 1564 goto out_free;
1565 }
1566
1567 if (netif_msg_ifup(port))
cfa969e3
DM		 1568 ehea_info("Send CQ: act_nr_cqes=%d, Recv CQ: act_nr_cqes=%d",
1569 pr->send_cq->attr.act_nr_of_cqes,
1570 pr->recv_cq->attr.act_nr_of_cqes);
7a291083
JBT		 1571
1572 init_attr = kzalloc(sizeof(*init_attr), GFP_KERNEL);
1573 if (!init_attr) {
1574 ret = -ENOMEM;
cfa969e3 1575 ehea_error("no mem for ehea_qp_init_attr");
7a291083
JBT		 1576 goto out_free;
1577 }
1578
1579 init_attr->low_lat_rq1 = 1;
1580 init_attr->signalingtype = 1; /* generate CQE if specified in WQE */
1581 init_attr->rq_count = 3;
1582 init_attr->qp_token = queue_token;
1583 init_attr->max_nr_send_wqes = pr_cfg->max_entries_sq;
1584 init_attr->max_nr_rwqes_rq1 = pr_cfg->max_entries_rq1;
1585 init_attr->max_nr_rwqes_rq2 = pr_cfg->max_entries_rq2;
1586 init_attr->max_nr_rwqes_rq3 = pr_cfg->max_entries_rq3;
1587 init_attr->wqe_size_enc_sq = EHEA_SG_SQ;
1588 init_attr->wqe_size_enc_rq1 = EHEA_SG_RQ1;
1589 init_attr->wqe_size_enc_rq2 = EHEA_SG_RQ2;
1590 init_attr->wqe_size_enc_rq3 = EHEA_SG_RQ3;
1591 init_attr->rq2_threshold = EHEA_RQ2_THRESHOLD;
1592 init_attr->rq3_threshold = EHEA_RQ3_THRESHOLD;
1593 init_attr->port_nr = port->logical_port_id;
1594 init_attr->send_cq_handle = pr->send_cq->fw_handle;
1595 init_attr->recv_cq_handle = pr->recv_cq->fw_handle;
1596 init_attr->aff_eq_handle = port->qp_eq->fw_handle;
1597
1598 pr->qp = ehea_create_qp(adapter, adapter->pd, init_attr);
1599 if (!pr->qp) {
cfa969e3 1600 ehea_error("create_qp failed");
7a291083
JBT		 1601 ret = -EIO;
1602 goto out_free;
1603 }
1604
1605 if (netif_msg_ifup(port))
cfa969e3
DM		 1606 ehea_info("QP: qp_nr=%d\n act_nr_snd_wqe=%d\n nr_rwqe_rq1=%d\n "
1607 "nr_rwqe_rq2=%d\n nr_rwqe_rq3=%d", init_attr->qp_nr,
1608 init_attr->act_nr_send_wqes,
1609 init_attr->act_nr_rwqes_rq1,
1610 init_attr->act_nr_rwqes_rq2,
1611 init_attr->act_nr_rwqes_rq3);
7a291083 1612
44fb3126
TK		 1613 pr->sq_skba_size = init_attr->act_nr_send_wqes + 1;
1614
1615 ret = ehea_init_q_skba(&pr->sq_skba, pr->sq_skba_size);
7a291083
JBT		 1616 ret |= ehea_init_q_skba(&pr->rq1_skba, init_attr->act_nr_rwqes_rq1 + 1);
1617 ret |= ehea_init_q_skba(&pr->rq2_skba, init_attr->act_nr_rwqes_rq2 + 1);
1618 ret |= ehea_init_q_skba(&pr->rq3_skba, init_attr->act_nr_rwqes_rq3 + 1);
1619 if (ret)
1620 goto out_free;
1621
1622 pr->swqe_refill_th = init_attr->act_nr_send_wqes / 10;
1623 if (ehea_gen_smrs(pr) != 0) {
1624 ret = -EIO;
1625 goto out_free;
1626 }
18604c54 1627
7a291083
JBT		 1628 atomic_set(&pr->swqe_avail, init_attr->act_nr_send_wqes - 1);
1629
1630 kfree(init_attr);
18604c54 1631
bea3348e 1632 netif_napi_add(pr->port->netdev, &pr->napi, ehea_poll, 64);
18604c54 1633
d4dc4ec9
JBT		 1634 pr->lro_mgr.max_aggr = pr->port->lro_max_aggr;
1635 pr->lro_mgr.max_desc = MAX_LRO_DESCRIPTORS;
1636 pr->lro_mgr.lro_arr = pr->lro_desc;
1637 pr->lro_mgr.get_skb_header = get_skb_hdr;
1638 pr->lro_mgr.features = LRO_F_NAPI | LRO_F_EXTRACT_VLAN_ID;
1639 pr->lro_mgr.dev = port->netdev;
1640 pr->lro_mgr.ip_summed = CHECKSUM_UNNECESSARY;
1641 pr->lro_mgr.ip_summed_aggr = CHECKSUM_UNNECESSARY;
1642
7a291083
JBT		 1643 ret = 0;
1644 goto out;
1645
1646out_free:
1647 kfree(init_attr);
1648 vfree(pr->sq_skba.arr);
1649 vfree(pr->rq1_skba.arr);
1650 vfree(pr->rq2_skba.arr);
1651 vfree(pr->rq3_skba.arr);
1652 ehea_destroy_qp(pr->qp);
1653 ehea_destroy_cq(pr->send_cq);
1654 ehea_destroy_cq(pr->recv_cq);
18604c54 1655 ehea_destroy_eq(pr->eq);
7a291083
JBT		 1656out:
1657 return ret;
1658}
1659
1660static int ehea_clean_portres(struct ehea_port *port, struct ehea_port_res *pr)
1661{
1662 int ret, i;
1663
357eb46d
HH		 1664 if (pr->qp)
1665 netif_napi_del(&pr->napi);
1666
7a291083
JBT		 1667 ret = ehea_destroy_qp(pr->qp);
1668
1669 if (!ret) {
1670 ehea_destroy_cq(pr->send_cq);
1671 ehea_destroy_cq(pr->recv_cq);
18604c54 1672 ehea_destroy_eq(pr->eq);
7a291083
JBT		 1673
1674 for (i = 0; i < pr->rq1_skba.len; i++)
1675 if (pr->rq1_skba.arr[i])
1676 dev_kfree_skb(pr->rq1_skba.arr[i]);
1677
1678 for (i = 0; i < pr->rq2_skba.len; i++)
1679 if (pr->rq2_skba.arr[i])
1680 dev_kfree_skb(pr->rq2_skba.arr[i]);
1681
1682 for (i = 0; i < pr->rq3_skba.len; i++)
1683 if (pr->rq3_skba.arr[i])
1684 dev_kfree_skb(pr->rq3_skba.arr[i]);
1685
1686 for (i = 0; i < pr->sq_skba.len; i++)
1687 if (pr->sq_skba.arr[i])
1688 dev_kfree_skb(pr->sq_skba.arr[i]);
1689
1690 vfree(pr->rq1_skba.arr);
1691 vfree(pr->rq2_skba.arr);
1692 vfree(pr->rq3_skba.arr);
1693 vfree(pr->sq_skba.arr);
1694 ret = ehea_rem_smrs(pr);
1695 }
1696 return ret;
1697}
1698
1699/*
1700 * The write_* functions store information in swqe which is used by
1701 * the hardware to calculate the ip/tcp/udp checksum
1702 */
1703
1704static inline void write_ip_start_end(struct ehea_swqe *swqe,
1705 const struct sk_buff *skb)
1706{
eddc9ec5 1707 swqe->ip_start = skb_network_offset(skb);
c9bdd4b5 1708 swqe->ip_end = (u8)(swqe->ip_start + ip_hdrlen(skb) - 1);
7a291083
JBT		 1709}
1710
1711static inline void write_tcp_offset_end(struct ehea_swqe *swqe,
1712 const struct sk_buff *skb)
1713{
1714 swqe->tcp_offset =
1715 (u8)(swqe->ip_end + 1 + offsetof(struct tcphdr, check));
1716
1717 swqe->tcp_end = (u16)skb->len - 1;
1718}
1719
1720static inline void write_udp_offset_end(struct ehea_swqe *swqe,
1721 const struct sk_buff *skb)
1722{
1723 swqe->tcp_offset =
1724 (u8)(swqe->ip_end + 1 + offsetof(struct udphdr, check));
1725
1726 swqe->tcp_end = (u16)skb->len - 1;
1727}
1728
1729
1730static void write_swqe2_TSO(struct sk_buff *skb,
1731 struct ehea_swqe *swqe, u32 lkey)
1732{
1733 struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry;
1734 u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0];
e743d313 1735 int skb_data_size = skb_headlen(skb);
7a291083 1736 int headersize;
7a291083
JBT		 1737
1738 /* Packet is TCP with TSO enabled */
1739 swqe->tx_control |= EHEA_SWQE_TSO;
1740 swqe->mss = skb_shinfo(skb)->gso_size;
1741 /* copy only eth/ip/tcp headers to immediate data and
1742 * the rest of skb->data to sg1entry
1743 */
ab6a5bb6 1744 headersize = ETH_HLEN + ip_hdrlen(skb) + tcp_hdrlen(skb);
7a291083 1745
e743d313 1746 skb_data_size = skb_headlen(skb);
7a291083
JBT		 1747
1748 if (skb_data_size >= headersize) {
1749 /* copy immediate data */
d626f62b 1750 skb_copy_from_linear_data(skb, imm_data, headersize);
7a291083
JBT		 1751 swqe->immediate_data_length = headersize;
1752
1753 if (skb_data_size > headersize) {
1754 /* set sg1entry data */
1755 sg1entry->l_key = lkey;
1756 sg1entry->len = skb_data_size - headersize;
44a5b3d5
TK		 1757 sg1entry->vaddr =
1758 ehea_map_vaddr(skb->data + headersize);
7a291083
JBT		 1759 swqe->descriptors++;
1760 }
1761 } else
cfa969e3 1762 ehea_error("cannot handle fragmented headers");
7a291083
JBT		 1763}
1764
1765static void write_swqe2_nonTSO(struct sk_buff *skb,
1766 struct ehea_swqe *swqe, u32 lkey)
1767{
e743d313 1768 int skb_data_size = skb_headlen(skb);
7a291083
JBT		 1769 u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0];
1770 struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry;
7a291083
JBT		 1771
1772 /* Packet is any nonTSO type
1773 *
1774 * Copy as much as possible skb->data to immediate data and
1775 * the rest to sg1entry
1776 */
1777 if (skb_data_size >= SWQE2_MAX_IMM) {
1778 /* copy immediate data */
d626f62b 1779 skb_copy_from_linear_data(skb, imm_data, SWQE2_MAX_IMM);
7a291083
JBT		 1780
1781 swqe->immediate_data_length = SWQE2_MAX_IMM;
1782
1783 if (skb_data_size > SWQE2_MAX_IMM) {
1784 /* copy sg1entry data */
1785 sg1entry->l_key = lkey;
1786 sg1entry->len = skb_data_size - SWQE2_MAX_IMM;
44a5b3d5
TK		 1787 sg1entry->vaddr =
1788 ehea_map_vaddr(skb->data + SWQE2_MAX_IMM);
7a291083
JBT		 1789 swqe->descriptors++;
1790 }
1791 } else {
d626f62b 1792 skb_copy_from_linear_data(skb, imm_data, skb_data_size);
7a291083
JBT		 1793 swqe->immediate_data_length = skb_data_size;
1794 }
1795}
1796
1797static inline void write_swqe2_data(struct sk_buff *skb, struct net_device *dev,
1798 struct ehea_swqe *swqe, u32 lkey)
1799{
1800 struct ehea_vsgentry *sg_list, *sg1entry, *sgentry;
1801 skb_frag_t *frag;
1802 int nfrags, sg1entry_contains_frag_data, i;
7a291083
JBT		 1803
1804 nfrags = skb_shinfo(skb)->nr_frags;
1805 sg1entry = &swqe->u.immdata_desc.sg_entry;
508d2b5d 1806 sg_list = (struct ehea_vsgentry *)&swqe->u.immdata_desc.sg_list;
7a291083
JBT		 1807 swqe->descriptors = 0;
1808 sg1entry_contains_frag_data = 0;
1809
1810 if ((dev->features & NETIF_F_TSO) && skb_shinfo(skb)->gso_size)
1811 write_swqe2_TSO(skb, swqe, lkey);
1812 else
1813 write_swqe2_nonTSO(skb, swqe, lkey);
1814
1815 /* write descriptors */
1816 if (nfrags > 0) {
1817 if (swqe->descriptors == 0) {
1818 /* sg1entry not yet used */
1819 frag = &skb_shinfo(skb)->frags[0];
1820
1821 /* copy sg1entry data */
1822 sg1entry->l_key = lkey;
1823 sg1entry->len = frag->size;
44a5b3d5
TK		 1824 sg1entry->vaddr =
1825 ehea_map_vaddr(page_address(frag->page)
1826 + frag->page_offset);
7a291083
JBT		 1827 swqe->descriptors++;
1828 sg1entry_contains_frag_data = 1;
1829 }
1830
1831 for (i = sg1entry_contains_frag_data; i < nfrags; i++) {
1832
1833 frag = &skb_shinfo(skb)->frags[i];
1834 sgentry = &sg_list[i - sg1entry_contains_frag_data];
1835
1836 sgentry->l_key = lkey;
1837 sgentry->len = frag->size;
44a5b3d5
TK		 1838 sgentry->vaddr =
1839 ehea_map_vaddr(page_address(frag->page)
1840 + frag->page_offset);
7a291083
JBT		 1841 swqe->descriptors++;
1842 }
1843 }
1844}
1845
1846static int ehea_broadcast_reg_helper(struct ehea_port *port, u32 hcallid)
1847{
1848 int ret = 0;
1849 u64 hret;
1850 u8 reg_type;
1851
1852 /* De/Register untagged packets */
1853 reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_UNTAGGED;
1854 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1855 port->logical_port_id,
1856 reg_type, port->mac_addr, 0, hcallid);
1857 if (hret != H_SUCCESS) {
cfa969e3
DM		 1858 ehea_error("%sregistering bc address failed (tagged)",
1859 hcallid == H_REG_BCMC ? "" : "de");
7a291083
JBT		 1860 ret = -EIO;
1861 goto out_herr;
1862 }
1863
1864 /* De/Register VLAN packets */
1865 reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_VLANID_ALL;
1866 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1867 port->logical_port_id,
1868 reg_type, port->mac_addr, 0, hcallid);
1869 if (hret != H_SUCCESS) {
cfa969e3
DM		 1870 ehea_error("%sregistering bc address failed (vlan)",
1871 hcallid == H_REG_BCMC ? "" : "de");
7a291083
JBT		 1872 ret = -EIO;
1873 }
1874out_herr:
1875 return ret;
1876}
1877
1878static int ehea_set_mac_addr(struct net_device *dev, void *sa)
1879{
1880 struct ehea_port *port = netdev_priv(dev);
1881 struct sockaddr *mac_addr = sa;
1882 struct hcp_ehea_port_cb0 *cb0;
1883 int ret;
1884 u64 hret;
1885
1886 if (!is_valid_ether_addr(mac_addr->sa_data)) {
1887 ret = -EADDRNOTAVAIL;
1888 goto out;
1889 }
1890
3faf2693 1891 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083 1892 if (!cb0) {
cfa969e3 1893 ehea_error("no mem for cb0");
7a291083
JBT		 1894 ret = -ENOMEM;
1895 goto out;
1896 }
1897
1898 memcpy(&(cb0->port_mac_addr), &(mac_addr->sa_data[0]), ETH_ALEN);
1899
1900 cb0->port_mac_addr = cb0->port_mac_addr >> 16;
1901
1902 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1903 port->logical_port_id, H_PORT_CB0,
1904 EHEA_BMASK_SET(H_PORT_CB0_MAC, 1), cb0);
1905 if (hret != H_SUCCESS) {
1906 ret = -EIO;
1907 goto out_free;
1908 }
1909
1910 memcpy(dev->dev_addr, mac_addr->sa_data, dev->addr_len);
1911
1912 /* Deregister old MAC in pHYP */
00aaea2f
JBT		 1913 if (port->state == EHEA_PORT_UP) {
1914 ret = ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
1915 if (ret)
1916 goto out_upregs;
1917 }
7a291083
JBT		 1918
1919 port->mac_addr = cb0->port_mac_addr << 16;
1920
1921 /* Register new MAC in pHYP */
00aaea2f
JBT		 1922 if (port->state == EHEA_PORT_UP) {
1923 ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
1924 if (ret)
1925 goto out_upregs;
1926 }
7a291083
JBT		 1927
1928 ret = 0;
21eee2dd
TK		 1929
1930out_upregs:
1931 ehea_update_bcmc_registrations();
7a291083 1932out_free:
3faf2693 1933 free_page((unsigned long)cb0);
7a291083
JBT		 1934out:
1935 return ret;
1936}
1937
1938static void ehea_promiscuous_error(u64 hret, int enable)
1939{
7674a588 1940 if (hret == H_AUTHORITY)
cfa969e3
DM		 1941 ehea_info("Hypervisor denied %sabling promiscuous mode",
1942 enable == 1 ? "en" : "dis");
7674a588 1943 else
cfa969e3
DM		 1944 ehea_error("failed %sabling promiscuous mode",
1945 enable == 1 ? "en" : "dis");
7a291083
JBT		 1946}
1947
1948static void ehea_promiscuous(struct net_device *dev, int enable)
1949{
1950 struct ehea_port *port = netdev_priv(dev);
1951 struct hcp_ehea_port_cb7 *cb7;
1952 u64 hret;
1953
aa3bc6c6 1954 if (enable == port->promisc)
7a291083
JBT		 1955 return;
1956
3faf2693 1957 cb7 = (void *)get_zeroed_page(GFP_ATOMIC);
7a291083 1958 if (!cb7) {
cfa969e3 1959 ehea_error("no mem for cb7");
7a291083
JBT		 1960 goto out;
1961 }
1962
1963 /* Modify Pxs_DUCQPN in CB7 */
1964 cb7->def_uc_qpn = enable == 1 ? port->port_res[0].qp->fw_handle : 0;
1965
1966 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1967 port->logical_port_id,
1968 H_PORT_CB7, H_PORT_CB7_DUCQPN, cb7);
1969 if (hret) {
1970 ehea_promiscuous_error(hret, enable);
1971 goto out;
1972 }
1973
1974 port->promisc = enable;
1975out:
3faf2693 1976 free_page((unsigned long)cb7);
7a291083
JBT		 1977}
1978
1979static u64 ehea_multicast_reg_helper(struct ehea_port *port, u64 mc_mac_addr,
1980 u32 hcallid)
1981{
1982 u64 hret;
1983 u8 reg_type;
1984
1985 reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST
1986 | EHEA_BCMC_UNTAGGED;
1987
1988 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1989 port->logical_port_id,
1990 reg_type, mc_mac_addr, 0, hcallid);
1991 if (hret)
1992 goto out;
1993
1994 reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST
1995 | EHEA_BCMC_VLANID_ALL;
1996
1997 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1998 port->logical_port_id,
1999 reg_type, mc_mac_addr, 0, hcallid);
2000out:
2001 return hret;
2002}
2003
2004static int ehea_drop_multicast_list(struct net_device *dev)
2005{
2006 struct ehea_port *port = netdev_priv(dev);
2007 struct ehea_mc_list *mc_entry = port->mc_list;
2008 struct list_head *pos;
2009 struct list_head *temp;
2010 int ret = 0;
2011 u64 hret;
2012
2013 list_for_each_safe(pos, temp, &(port->mc_list->list)) {
2014 mc_entry = list_entry(pos, struct ehea_mc_list, list);
2015
2016 hret = ehea_multicast_reg_helper(port, mc_entry->macaddr,
2017 H_DEREG_BCMC);
2018 if (hret) {
cfa969e3 2019 ehea_error("failed deregistering mcast MAC");
7a291083
JBT		 2020 ret = -EIO;
2021 }
2022
2023 list_del(pos);
2024 kfree(mc_entry);
2025 }
2026 return ret;
2027}
2028
2029static void ehea_allmulti(struct net_device *dev, int enable)
2030{
2031 struct ehea_port *port = netdev_priv(dev);
2032 u64 hret;
2033
2034 if (!port->allmulti) {
2035 if (enable) {
2036 /* Enable ALLMULTI */
2037 ehea_drop_multicast_list(dev);
2038 hret = ehea_multicast_reg_helper(port, 0, H_REG_BCMC);
2039 if (!hret)
2040 port->allmulti = 1;
2041 else
cfa969e3 2042 ehea_error("failed enabling IFF_ALLMULTI");
7a291083
JBT		 2043 }
2044 } else
2045 if (!enable) {
2046 /* Disable ALLMULTI */
2047 hret = ehea_multicast_reg_helper(port, 0, H_DEREG_BCMC);
2048 if (!hret)
2049 port->allmulti = 0;
2050 else
cfa969e3 2051 ehea_error("failed disabling IFF_ALLMULTI");
7a291083
JBT		 2052 }
2053}
2054
508d2b5d 2055static void ehea_add_multicast_entry(struct ehea_port *port, u8 *mc_mac_addr)
7a291083
JBT		 2056{
2057 struct ehea_mc_list *ehea_mcl_entry;
2058 u64 hret;
2059
1e1675cc 2060 ehea_mcl_entry = kzalloc(sizeof(*ehea_mcl_entry), GFP_ATOMIC);
7a291083 2061 if (!ehea_mcl_entry) {
cfa969e3 2062 ehea_error("no mem for mcl_entry");
7a291083
JBT		 2063 return;
2064 }
2065
2066 INIT_LIST_HEAD(&ehea_mcl_entry->list);
2067
2068 memcpy(&ehea_mcl_entry->macaddr, mc_mac_addr, ETH_ALEN);
2069
2070 hret = ehea_multicast_reg_helper(port, ehea_mcl_entry->macaddr,
2071 H_REG_BCMC);
2072 if (!hret)
2073 list_add(&ehea_mcl_entry->list, &port->mc_list->list);
2074 else {
cfa969e3 2075 ehea_error("failed registering mcast MAC");
7a291083
JBT		 2076 kfree(ehea_mcl_entry);
2077 }
2078}
2079
2080static void ehea_set_multicast_list(struct net_device *dev)
2081{
2082 struct ehea_port *port = netdev_priv(dev);
22bedad3 2083 struct netdev_hw_addr *ha;
48e2f183 2084 int ret;
7a291083
JBT		 2085
2086 if (dev->flags & IFF_PROMISC) {
2087 ehea_promiscuous(dev, 1);
2088 return;
2089 }
2090 ehea_promiscuous(dev, 0);
2091
2092 if (dev->flags & IFF_ALLMULTI) {
2093 ehea_allmulti(dev, 1);
21eee2dd 2094 goto out;
7a291083
JBT		 2095 }
2096 ehea_allmulti(dev, 0);
2097
4cd24eaf 2098 if (!netdev_mc_empty(dev)) {
7a291083
JBT		 2099 ret = ehea_drop_multicast_list(dev);
2100 if (ret) {
2101 /* Dropping the current multicast list failed.
2102 * Enabling ALL_MULTI is the best we can do.
2103 */
2104 ehea_allmulti(dev, 1);
2105 }
2106
4cd24eaf 2107 if (netdev_mc_count(dev) > port->adapter->max_mc_mac) {
cfa969e3
DM		 2108 ehea_info("Mcast registration limit reached (0x%llx). "
2109 "Use ALLMULTI!",
2110 port->adapter->max_mc_mac);
7a291083
JBT		 2111 goto out;
2112 }
2113
22bedad3
JP		 2114 netdev_for_each_mc_addr(ha, dev)
2115 ehea_add_multicast_entry(port, ha->addr);
508d2b5d 2116
7a291083
JBT		 2117 }
2118out:
21eee2dd 2119 ehea_update_bcmc_registrations();
7a291083
JBT		 2120}
2121
2122static int ehea_change_mtu(struct net_device *dev, int new_mtu)
2123{
2124 if ((new_mtu < 68) || (new_mtu > EHEA_MAX_PACKET_SIZE))
2125 return -EINVAL;
2126 dev->mtu = new_mtu;
2127 return 0;
2128}
2129
2130static void ehea_xmit2(struct sk_buff *skb, struct net_device *dev,
2131 struct ehea_swqe *swqe, u32 lkey)
2132{
2133 if (skb->protocol == htons(ETH_P_IP)) {
eddc9ec5 2134 const struct iphdr *iph = ip_hdr(skb);
d1d25aab 2135
7a291083
JBT		 2136 /* IPv4 */
2137 swqe->tx_control |= EHEA_SWQE_CRC
2138 | EHEA_SWQE_IP_CHECKSUM
2139 | EHEA_SWQE_TCP_CHECKSUM
2140 | EHEA_SWQE_IMM_DATA_PRESENT
2141 | EHEA_SWQE_DESCRIPTORS_PRESENT;
2142
2143 write_ip_start_end(swqe, skb);
2144
eddc9ec5 2145 if (iph->protocol == IPPROTO_UDP) {
8e95a202
JP		 2146 if ((iph->frag_off & IP_MF) ||
2147 (iph->frag_off & IP_OFFSET))
7a291083
JBT		 2148 /* IP fragment, so don't change cs */
2149 swqe->tx_control &= ~EHEA_SWQE_TCP_CHECKSUM;
2150 else
2151 write_udp_offset_end(swqe, skb);
eddc9ec5 2152 } else if (iph->protocol == IPPROTO_TCP) {
7a291083
JBT		 2153 write_tcp_offset_end(swqe, skb);
2154 }
2155
2156 /* icmp (big data) and ip segmentation packets (all other ip
2157 packets) do not require any special handling */
2158
2159 } else {
2160 /* Other Ethernet Protocol */
2161 swqe->tx_control |= EHEA_SWQE_CRC
2162 | EHEA_SWQE_IMM_DATA_PRESENT
2163 | EHEA_SWQE_DESCRIPTORS_PRESENT;
2164 }
2165
2166 write_swqe2_data(skb, dev, swqe, lkey);
2167}
2168
2169static void ehea_xmit3(struct sk_buff *skb, struct net_device *dev,
2170 struct ehea_swqe *swqe)
2171{
2172 int nfrags = skb_shinfo(skb)->nr_frags;
2173 u8 *imm_data = &swqe->u.immdata_nodesc.immediate_data[0];
2174 skb_frag_t *frag;
2175 int i;
2176
2177 if (skb->protocol == htons(ETH_P_IP)) {
eddc9ec5 2178 const struct iphdr *iph = ip_hdr(skb);
d1d25aab 2179
7a291083
JBT		 2180 /* IPv4 */
2181 write_ip_start_end(swqe, skb);
2182
eddc9ec5 2183 if (iph->protocol == IPPROTO_TCP) {
7a291083
JBT		 2184 swqe->tx_control |= EHEA_SWQE_CRC
2185 | EHEA_SWQE_IP_CHECKSUM
2186 | EHEA_SWQE_TCP_CHECKSUM
2187 | EHEA_SWQE_IMM_DATA_PRESENT;
2188
2189 write_tcp_offset_end(swqe, skb);
2190
eddc9ec5 2191 } else if (iph->protocol == IPPROTO_UDP) {
8e95a202
JP		 2192 if ((iph->frag_off & IP_MF) ||
2193 (iph->frag_off & IP_OFFSET))
7a291083
JBT		 2194 /* IP fragment, so don't change cs */
2195 swqe->tx_control |= EHEA_SWQE_CRC
2196 | EHEA_SWQE_IMM_DATA_PRESENT;
2197 else {
2198 swqe->tx_control |= EHEA_SWQE_CRC
2199 | EHEA_SWQE_IP_CHECKSUM
2200 | EHEA_SWQE_TCP_CHECKSUM
2201 | EHEA_SWQE_IMM_DATA_PRESENT;
2202
2203 write_udp_offset_end(swqe, skb);
2204 }
2205 } else {
2206 /* icmp (big data) and
2207 ip segmentation packets (all other ip packets) */
2208 swqe->tx_control |= EHEA_SWQE_CRC
2209 | EHEA_SWQE_IP_CHECKSUM
2210 | EHEA_SWQE_IMM_DATA_PRESENT;
2211 }
2212 } else {
2213 /* Other Ethernet Protocol */
2214 swqe->tx_control |= EHEA_SWQE_CRC | EHEA_SWQE_IMM_DATA_PRESENT;
2215 }
2216 /* copy (immediate) data */
2217 if (nfrags == 0) {
2218 /* data is in a single piece */
d626f62b 2219 skb_copy_from_linear_data(skb, imm_data, skb->len);
7a291083
JBT		 2220 } else {
2221 /* first copy data from the skb->data buffer ... */
d626f62b 2222 skb_copy_from_linear_data(skb, imm_data,
e743d313
ED		 2223 skb_headlen(skb));
2224 imm_data += skb_headlen(skb);
7a291083
JBT		 2225
2226 /* ... then copy data from the fragments */
2227 for (i = 0; i < nfrags; i++) {
2228 frag = &skb_shinfo(skb)->frags[i];
2229 memcpy(imm_data,
2230 page_address(frag->page) + frag->page_offset,
2231 frag->size);
2232 imm_data += frag->size;
2233 }
2234 }
2235 swqe->immediate_data_length = skb->len;
2236 dev_kfree_skb(skb);
2237}
2238
18604c54
JBT		 2239static inline int ehea_hash_skb(struct sk_buff *skb, int num_qps)
2240{
2241 struct tcphdr *tcp;
2242 u32 tmp;
2243
2244 if ((skb->protocol == htons(ETH_P_IP)) &&
88ca2d07 2245 (ip_hdr(skb)->protocol == IPPROTO_TCP)) {
508d2b5d
DM		 2246 tcp = (struct tcphdr *)(skb_network_header(skb) +
2247 (ip_hdr(skb)->ihl * 4));
18604c54 2248 tmp = (tcp->source + (tcp->dest << 16)) % 31;
88ca2d07 2249 tmp += ip_hdr(skb)->daddr % 31;
18604c54 2250 return tmp % num_qps;
508d2b5d 2251 } else
18604c54
JBT		 2252 return 0;
2253}
2254
7a291083
JBT		 2255static int ehea_start_xmit(struct sk_buff *skb, struct net_device *dev)
2256{
2257 struct ehea_port *port = netdev_priv(dev);
2258 struct ehea_swqe *swqe;
2259 unsigned long flags;
2260 u32 lkey;
2261 int swqe_index;
18604c54
JBT		 2262 struct ehea_port_res *pr;
2263
2264 pr = &port->port_res[ehea_hash_skb(skb, port->num_tx_qps)];
2265
18604c54
JBT		 2266 if (!spin_trylock(&pr->xmit_lock))
2267 return NETDEV_TX_BUSY;
2268
2269 if (pr->queue_stopped) {
2270 spin_unlock(&pr->xmit_lock);
2271 return NETDEV_TX_BUSY;
2272 }
7a291083
JBT		 2273
2274 swqe = ehea_get_swqe(pr->qp, &swqe_index);
2275 memset(swqe, 0, SWQE_HEADER_SIZE);
2276 atomic_dec(&pr->swqe_avail);
2277
e5ccd961
ED		 2278 if (vlan_tx_tag_present(skb)) {
2279 swqe->tx_control |= EHEA_SWQE_VLAN_INSERT;
2280 swqe->vlan_tag = vlan_tx_tag_get(skb);
2281 }
2282
ce45b873
BL		 2283 pr->tx_packets++;
2284 pr->tx_bytes += skb->len;
2285
7a291083
JBT		 2286 if (skb->len <= SWQE3_MAX_IMM) {
2287 u32 sig_iv = port->sig_comp_iv;
2288 u32 swqe_num = pr->swqe_id_counter;
2289 ehea_xmit3(skb, dev, swqe);
2290 swqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE3_TYPE)
2291 | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, swqe_num);
2292 if (pr->swqe_ll_count >= (sig_iv - 1)) {
2293 swqe->wr_id |= EHEA_BMASK_SET(EHEA_WR_ID_REFILL,
2294 sig_iv);
2295 swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
2296 pr->swqe_ll_count = 0;
2297 } else
2298 pr->swqe_ll_count += 1;
2299 } else {
2300 swqe->wr_id =
2301 EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE2_TYPE)
2302 | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, pr->swqe_id_counter)
acbddb59 2303 | EHEA_BMASK_SET(EHEA_WR_ID_REFILL, 1)
7a291083
JBT		 2304 | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, pr->sq_skba.index);
2305 pr->sq_skba.arr[pr->sq_skba.index] = skb;
2306
2307 pr->sq_skba.index++;
2308 pr->sq_skba.index &= (pr->sq_skba.len - 1);
2309
2310 lkey = pr->send_mr.lkey;
2311 ehea_xmit2(skb, dev, swqe, lkey);
acbddb59 2312 swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
7a291083
JBT		 2313 }
2314 pr->swqe_id_counter += 1;
2315
cfa969e3
DM		 2316 if (netif_msg_tx_queued(port)) {
2317 ehea_info("post swqe on QP %d", pr->qp->init_attr.qp_nr);
bff0a55f 2318 ehea_dump(swqe, 512, "swqe");
cfa969e3 2319 }
7a291083 2320
2c69448b
JBT		 2321 if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) {
2322 netif_stop_queue(dev);
2323 swqe->tx_control |= EHEA_SWQE_PURGE;
2324 }
44c82152 2325
7a291083 2326 ehea_post_swqe(pr->qp, swqe);
7a291083
JBT		 2327
2328 if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) {
2329 spin_lock_irqsave(&pr->netif_queue, flags);
2330 if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) {
acbddb59 2331 pr->p_stats.queue_stopped++;
7a291083
JBT		 2332 netif_stop_queue(dev);
2333 pr->queue_stopped = 1;
2334 }
2335 spin_unlock_irqrestore(&pr->netif_queue, flags);
2336 }
1ae5dc34 2337 dev->trans_start = jiffies; /* NETIF_F_LLTX driver :( */
7a291083 2338 spin_unlock(&pr->xmit_lock);
2c69448b 2339
7a291083
JBT		 2340 return NETDEV_TX_OK;
2341}
2342
2343static void ehea_vlan_rx_register(struct net_device *dev,
2344 struct vlan_group *grp)
2345{
2346 struct ehea_port *port = netdev_priv(dev);
2347 struct ehea_adapter *adapter = port->adapter;
2348 struct hcp_ehea_port_cb1 *cb1;
2349 u64 hret;
2350
2351 port->vgrp = grp;
2352
3faf2693 2353 cb1 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083 2354 if (!cb1) {
cfa969e3 2355 ehea_error("no mem for cb1");
7a291083
JBT		 2356 goto out;
2357 }
2358
7a291083
JBT		 2359 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
2360 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2361 if (hret != H_SUCCESS)
cfa969e3 2362 ehea_error("modify_ehea_port failed");
7a291083 2363
3faf2693 2364 free_page((unsigned long)cb1);
7a291083
JBT		 2365out:
2366 return;
2367}
2368
2369static void ehea_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
2370{
2371 struct ehea_port *port = netdev_priv(dev);
2372 struct ehea_adapter *adapter = port->adapter;
2373 struct hcp_ehea_port_cb1 *cb1;
2374 int index;
2375 u64 hret;
2376
3faf2693 2377 cb1 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083 2378 if (!cb1) {
cfa969e3 2379 ehea_error("no mem for cb1");
7a291083
JBT		 2380 goto out;
2381 }
2382
2383 hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
2384 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2385 if (hret != H_SUCCESS) {
cfa969e3 2386 ehea_error("query_ehea_port failed");
7a291083
JBT		 2387 goto out;
2388 }
2389
2390 index = (vid / 64);
dec590c1 2391 cb1->vlan_filter[index] |= ((u64)(0x8000000000000000 >> (vid & 0x3F)));
7a291083
JBT		 2392
2393 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
2394 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2395 if (hret != H_SUCCESS)
cfa969e3 2396 ehea_error("modify_ehea_port failed");
7a291083 2397out:
3faf2693 2398 free_page((unsigned long)cb1);
7a291083
JBT		 2399 return;
2400}
2401
2402static void ehea_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
2403{
2404 struct ehea_port *port = netdev_priv(dev);
2405 struct ehea_adapter *adapter = port->adapter;
2406 struct hcp_ehea_port_cb1 *cb1;
2407 int index;
2408 u64 hret;
2409
5c15bdec 2410 vlan_group_set_device(port->vgrp, vid, NULL);
7a291083 2411
3faf2693 2412 cb1 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083 2413 if (!cb1) {
cfa969e3 2414 ehea_error("no mem for cb1");
7a291083
JBT		 2415 goto out;
2416 }
2417
2418 hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
2419 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2420 if (hret != H_SUCCESS) {
cfa969e3 2421 ehea_error("query_ehea_port failed");
7a291083
JBT		 2422 goto out;
2423 }
2424
2425 index = (vid / 64);
dec590c1 2426 cb1->vlan_filter[index] &= ~((u64)(0x8000000000000000 >> (vid & 0x3F)));
7a291083
JBT		 2427
2428 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
2429 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2430 if (hret != H_SUCCESS)
cfa969e3 2431 ehea_error("modify_ehea_port failed");
7a291083 2432out:
3faf2693 2433 free_page((unsigned long)cb1);
7a291083
JBT		 2434}
2435
2436int ehea_activate_qp(struct ehea_adapter *adapter, struct ehea_qp *qp)
2437{
2438 int ret = -EIO;
2439 u64 hret;
2440 u16 dummy16 = 0;
2441 u64 dummy64 = 0;
508d2b5d 2442 struct hcp_modify_qp_cb0 *cb0;
7a291083 2443
3faf2693 2444 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083
JBT		 2445 if (!cb0) {
2446 ret = -ENOMEM;
2447 goto out;
2448 }
2449
2450 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2451 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2452 if (hret != H_SUCCESS) {
cfa969e3 2453 ehea_error("query_ehea_qp failed (1)");
7a291083
JBT		 2454 goto out;
2455 }
2456
2457 cb0->qp_ctl_reg = H_QP_CR_STATE_INITIALIZED;
2458 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2459 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2460 &dummy64, &dummy64, &dummy16, &dummy16);
2461 if (hret != H_SUCCESS) {
cfa969e3 2462 ehea_error("modify_ehea_qp failed (1)");
7a291083
JBT		 2463 goto out;
2464 }
2465
2466 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2467 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2468 if (hret != H_SUCCESS) {
cfa969e3 2469 ehea_error("query_ehea_qp failed (2)");
7a291083
JBT		 2470 goto out;
2471 }
2472
2473 cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_INITIALIZED;
2474 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2475 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2476 &dummy64, &dummy64, &dummy16, &dummy16);
2477 if (hret != H_SUCCESS) {
cfa969e3 2478 ehea_error("modify_ehea_qp failed (2)");
7a291083
JBT		 2479 goto out;
2480 }
2481
2482 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2483 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2484 if (hret != H_SUCCESS) {
cfa969e3 2485 ehea_error("query_ehea_qp failed (3)");
7a291083
JBT		 2486 goto out;
2487 }
2488
2489 cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_RDY2SND;
2490 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2491 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2492 &dummy64, &dummy64, &dummy16, &dummy16);
2493 if (hret != H_SUCCESS) {
cfa969e3 2494 ehea_error("modify_ehea_qp failed (3)");
7a291083
JBT		 2495 goto out;
2496 }
2497
2498 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2499 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2500 if (hret != H_SUCCESS) {
cfa969e3 2501 ehea_error("query_ehea_qp failed (4)");
7a291083
JBT		 2502 goto out;
2503 }
2504
2505 ret = 0;
2506out:
3faf2693 2507 free_page((unsigned long)cb0);
7a291083
JBT		 2508 return ret;
2509}
2510
2511static int ehea_port_res_setup(struct ehea_port *port, int def_qps,
2512 int add_tx_qps)
2513{
2514 int ret, i;
2515 struct port_res_cfg pr_cfg, pr_cfg_small_rx;
2516 enum ehea_eq_type eq_type = EHEA_EQ;
2517
2518 port->qp_eq = ehea_create_eq(port->adapter, eq_type,
2519 EHEA_MAX_ENTRIES_EQ, 1);
2520 if (!port->qp_eq) {
2521 ret = -EINVAL;
cfa969e3 2522 ehea_error("ehea_create_eq failed (qp_eq)");
7a291083
JBT		 2523 goto out_kill_eq;
2524 }
2525
2526 pr_cfg.max_entries_rcq = rq1_entries + rq2_entries + rq3_entries;
18604c54 2527 pr_cfg.max_entries_scq = sq_entries * 2;
7a291083
JBT		 2528 pr_cfg.max_entries_sq = sq_entries;
2529 pr_cfg.max_entries_rq1 = rq1_entries;
2530 pr_cfg.max_entries_rq2 = rq2_entries;
2531 pr_cfg.max_entries_rq3 = rq3_entries;
2532
2533 pr_cfg_small_rx.max_entries_rcq = 1;
2534 pr_cfg_small_rx.max_entries_scq = sq_entries;
2535 pr_cfg_small_rx.max_entries_sq = sq_entries;
2536 pr_cfg_small_rx.max_entries_rq1 = 1;
2537 pr_cfg_small_rx.max_entries_rq2 = 1;
2538 pr_cfg_small_rx.max_entries_rq3 = 1;
2539
2540 for (i = 0; i < def_qps; i++) {
2541 ret = ehea_init_port_res(port, &port->port_res[i], &pr_cfg, i);
2542 if (ret)
2543 goto out_clean_pr;
2544 }
2545 for (i = def_qps; i < def_qps + add_tx_qps; i++) {
2546 ret = ehea_init_port_res(port, &port->port_res[i],
2547 &pr_cfg_small_rx, i);
2548 if (ret)
2549 goto out_clean_pr;
2550 }
2551
2552 return 0;
2553
2554out_clean_pr:
2555 while (--i >= 0)
2556 ehea_clean_portres(port, &port->port_res[i]);
2557
2558out_kill_eq:
2559 ehea_destroy_eq(port->qp_eq);
2560 return ret;
2561}
2562
2563static int ehea_clean_all_portres(struct ehea_port *port)
2564{
2565 int ret = 0;
2566 int i;
2567
508d2b5d 2568 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
7a291083
JBT		 2569 ret |= ehea_clean_portres(port, &port->port_res[i]);
2570
2571 ret |= ehea_destroy_eq(port->qp_eq);
2572
2573 return ret;
2574}
2575
35cf2e2e 2576static void ehea_remove_adapter_mr(struct ehea_adapter *adapter)
1211bb6d 2577{
35cf2e2e
TK		 2578 if (adapter->active_ports)
2579 return;
1211bb6d
TK		 2580
2581 ehea_rem_mr(&adapter->mr);
2582}
2583
35cf2e2e 2584static int ehea_add_adapter_mr(struct ehea_adapter *adapter)
1211bb6d 2585{
35cf2e2e
TK		 2586 if (adapter->active_ports)
2587 return 0;
1211bb6d
TK		 2588
2589 return ehea_reg_kernel_mr(adapter, &adapter->mr);
2590}
2591
7a291083
JBT		 2592static int ehea_up(struct net_device *dev)
2593{
2594 int ret, i;
2595 struct ehea_port *port = netdev_priv(dev);
7a291083
JBT		 2596
2597 if (port->state == EHEA_PORT_UP)
2598 return 0;
2599
2600 ret = ehea_port_res_setup(port, port->num_def_qps,
2601 port->num_add_tx_qps);
2602 if (ret) {
cfa969e3 2603 ehea_error("port_res_failed");
7a291083
JBT		 2604 goto out;
2605 }
2606
2607 /* Set default QP for this port */
2608 ret = ehea_configure_port(port);
2609 if (ret) {
cfa969e3 2610 ehea_error("ehea_configure_port failed. ret:%d", ret);
7a291083
JBT		 2611 goto out_clean_pr;
2612 }
2613
7a291083
JBT		 2614 ret = ehea_reg_interrupts(dev);
2615 if (ret) {
cfa969e3 2616 ehea_error("reg_interrupts failed. ret:%d", ret);
f9e29228 2617 goto out_clean_pr;
7a291083
JBT		 2618 }
2619
508d2b5d 2620 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
7a291083
JBT		 2621 ret = ehea_activate_qp(port->adapter, port->port_res[i].qp);
2622 if (ret) {
cfa969e3 2623 ehea_error("activate_qp failed");
7a291083
JBT		 2624 goto out_free_irqs;
2625 }
2626 }
2627
508d2b5d 2628 for (i = 0; i < port->num_def_qps; i++) {
7a291083
JBT		 2629 ret = ehea_fill_port_res(&port->port_res[i]);
2630 if (ret) {
cfa969e3 2631 ehea_error("out_free_irqs");
7a291083
JBT		 2632 goto out_free_irqs;
2633 }
2634 }
2635
21eee2dd
TK		 2636 ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
2637 if (ret) {
2638 ret = -EIO;
2639 goto out_free_irqs;
2640 }
2641
7a291083 2642 port->state = EHEA_PORT_UP;
21eee2dd
TK		 2643
2644 ret = 0;
7a291083
JBT		 2645 goto out;
2646
2647out_free_irqs:
2648 ehea_free_interrupts(dev);
2649
7a291083
JBT		 2650out_clean_pr:
2651 ehea_clean_all_portres(port);
2652out:
44c82152 2653 if (ret)
cfa969e3 2654 ehea_info("Failed starting %s. ret=%i", dev->name, ret);
44c82152 2655
21eee2dd 2656 ehea_update_bcmc_registrations();
21eee2dd 2657 ehea_update_firmware_handles();
21eee2dd 2658
7a291083
JBT		 2659 return ret;
2660}
2661
bea3348e
SH		 2662static void port_napi_disable(struct ehea_port *port)
2663{
2664 int i;
2665
0173b793 2666 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
bea3348e
SH		 2667 napi_disable(&port->port_res[i].napi);
2668}
2669
2670static void port_napi_enable(struct ehea_port *port)
2671{
2672 int i;
2673
0173b793 2674 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
bea3348e
SH		 2675 napi_enable(&port->port_res[i].napi);
2676}
2677
7a291083
JBT		 2678static int ehea_open(struct net_device *dev)
2679{
2680 int ret;
2681 struct ehea_port *port = netdev_priv(dev);
2682
a5af6ad3 2683 mutex_lock(&port->port_lock);
7a291083 2684
cfa969e3
DM		 2685 if (netif_msg_ifup(port))
2686 ehea_info("enabling port %s", dev->name);
7a291083
JBT		 2687
2688 ret = ehea_up(dev);
bea3348e
SH		 2689 if (!ret) {
2690 port_napi_enable(port);
7a291083 2691 netif_start_queue(dev);
bea3348e 2692 }
7a291083 2693
5b27d427 2694 init_waitqueue_head(&port->swqe_avail_wq);
a8bb69f7 2695 init_waitqueue_head(&port->restart_wq);
5b27d427 2696
a5af6ad3 2697 mutex_unlock(&port->port_lock);
7a291083
JBT		 2698
2699 return ret;
2700}
2701
2702static int ehea_down(struct net_device *dev)
2703{
bea3348e 2704 int ret;
7a291083
JBT		 2705 struct ehea_port *port = netdev_priv(dev);
2706
2707 if (port->state == EHEA_PORT_DOWN)
2708 return 0;
2709
2710 ehea_drop_multicast_list(dev);
21eee2dd
TK		 2711 ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
2712
7a291083
JBT		 2713 ehea_free_interrupts(dev);
2714
7a291083 2715 port->state = EHEA_PORT_DOWN;
44c82152 2716
21eee2dd 2717 ehea_update_bcmc_registrations();
21eee2dd 2718
44c82152
TK		 2719 ret = ehea_clean_all_portres(port);
2720 if (ret)
cfa969e3
DM		 2721 ehea_info("Failed freeing resources for %s. ret=%i",
2722 dev->name, ret);
44c82152 2723
21eee2dd 2724 ehea_update_firmware_handles();
21eee2dd 2725
7a291083
JBT		 2726 return ret;
2727}
2728
2729static int ehea_stop(struct net_device *dev)
2730{
2731 int ret;
2732 struct ehea_port *port = netdev_priv(dev);
2733
cfa969e3
DM		 2734 if (netif_msg_ifdown(port))
2735 ehea_info("disabling port %s", dev->name);
7a291083 2736
2f69ae01 2737 set_bit(__EHEA_DISABLE_PORT_RESET, &port->flags);
4bb073c0 2738 cancel_work_sync(&port->reset_task);
a5af6ad3 2739 mutex_lock(&port->port_lock);
7a291083 2740 netif_stop_queue(dev);
0173b793 2741 port_napi_disable(port);
7a291083 2742 ret = ehea_down(dev);
a5af6ad3 2743 mutex_unlock(&port->port_lock);
2f69ae01 2744 clear_bit(__EHEA_DISABLE_PORT_RESET, &port->flags);
7a291083
JBT		 2745 return ret;
2746}
2747
22559c5d 2748static void ehea_purge_sq(struct ehea_qp *orig_qp)
2c69448b
JBT		 2749{
2750 struct ehea_qp qp = *orig_qp;
2751 struct ehea_qp_init_attr *init_attr = &qp.init_attr;
2752 struct ehea_swqe *swqe;
2753 int wqe_index;
2754 int i;
2755
2756 for (i = 0; i < init_attr->act_nr_send_wqes; i++) {
2757 swqe = ehea_get_swqe(&qp, &wqe_index);
2758 swqe->tx_control |= EHEA_SWQE_PURGE;
2759 }
2760}
2761
22559c5d 2762static void ehea_flush_sq(struct ehea_port *port)
44fb3126
TK		 2763{
2764 int i;
2765
2766 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
2767 struct ehea_port_res *pr = &port->port_res[i];
2768 int swqe_max = pr->sq_skba_size - 2 - pr->swqe_ll_count;
5b27d427
BL		 2769 int ret;
2770
2771 ret = wait_event_timeout(port->swqe_avail_wq,
2772 atomic_read(&pr->swqe_avail) >= swqe_max,
2773 msecs_to_jiffies(100));
2774
2775 if (!ret) {
cfa969e3 2776 ehea_error("WARNING: sq not flushed completely");
5b27d427 2777 break;
44fb3126
TK		 2778 }
2779 }
2780}
2781
2c69448b
JBT		 2782int ehea_stop_qps(struct net_device *dev)
2783{
2784 struct ehea_port *port = netdev_priv(dev);
2785 struct ehea_adapter *adapter = port->adapter;
508d2b5d 2786 struct hcp_modify_qp_cb0 *cb0;
2c69448b
JBT		 2787 int ret = -EIO;
2788 int dret;
2789 int i;
2790 u64 hret;
2791 u64 dummy64 = 0;
2792 u16 dummy16 = 0;
2793
3faf2693 2794 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
2c69448b
JBT		 2795 if (!cb0) {
2796 ret = -ENOMEM;
2797 goto out;
2798 }
2799
2800 for (i = 0; i < (port->num_def_qps + port->num_add_tx_qps); i++) {
2801 struct ehea_port_res *pr = &port->port_res[i];
2802 struct ehea_qp *qp = pr->qp;
2803
2804 /* Purge send queue */
2805 ehea_purge_sq(qp);
2806
2807 /* Disable queue pair */
2808 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2809 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2810 cb0);
2811 if (hret != H_SUCCESS) {
cfa969e3 2812 ehea_error("query_ehea_qp failed (1)");
2c69448b
JBT		 2813 goto out;
2814 }
2815
2816 cb0->qp_ctl_reg = (cb0->qp_ctl_reg & H_QP_CR_RES_STATE) << 8;
2817 cb0->qp_ctl_reg &= ~H_QP_CR_ENABLED;
2818
2819 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2820 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG,
2821 1), cb0, &dummy64,
2822 &dummy64, &dummy16, &dummy16);
2823 if (hret != H_SUCCESS) {
cfa969e3 2824 ehea_error("modify_ehea_qp failed (1)");
2c69448b
JBT		 2825 goto out;
2826 }
2827
2828 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2829 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2830 cb0);
2831 if (hret != H_SUCCESS) {
cfa969e3 2832 ehea_error("query_ehea_qp failed (2)");
2c69448b
JBT		 2833 goto out;
2834 }
2835
2836 /* deregister shared memory regions */
2837 dret = ehea_rem_smrs(pr);
2838 if (dret) {
cfa969e3 2839 ehea_error("unreg shared memory region failed");
2c69448b
JBT		 2840 goto out;
2841 }
2842 }
2843
2844 ret = 0;
2845out:
3faf2693 2846 free_page((unsigned long)cb0);
2c69448b
JBT		 2847
2848 return ret;
2849}
2850
508d2b5d 2851void ehea_update_rqs(struct ehea_qp *orig_qp, struct ehea_port_res *pr)
2c69448b
JBT		 2852{
2853 struct ehea_qp qp = *orig_qp;
2854 struct ehea_qp_init_attr *init_attr = &qp.init_attr;
2855 struct ehea_rwqe *rwqe;
2856 struct sk_buff **skba_rq2 = pr->rq2_skba.arr;
2857 struct sk_buff **skba_rq3 = pr->rq3_skba.arr;
2858 struct sk_buff *skb;
2859 u32 lkey = pr->recv_mr.lkey;
2860
2861
2862 int i;
2863 int index;
2864
2865 for (i = 0; i < init_attr->act_nr_rwqes_rq2 + 1; i++) {
2866 rwqe = ehea_get_next_rwqe(&qp, 2);
2867 rwqe->sg_list[0].l_key = lkey;
2868 index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, rwqe->wr_id);
2869 skb = skba_rq2[index];
2870 if (skb)
2871 rwqe->sg_list[0].vaddr = ehea_map_vaddr(skb->data);
2872 }
2873
2874 for (i = 0; i < init_attr->act_nr_rwqes_rq3 + 1; i++) {
2875 rwqe = ehea_get_next_rwqe(&qp, 3);
2876 rwqe->sg_list[0].l_key = lkey;
2877 index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, rwqe->wr_id);
2878 skb = skba_rq3[index];
2879 if (skb)
2880 rwqe->sg_list[0].vaddr = ehea_map_vaddr(skb->data);
2881 }
2882}
2883
2884int ehea_restart_qps(struct net_device *dev)
2885{
2886 struct ehea_port *port = netdev_priv(dev);
2887 struct ehea_adapter *adapter = port->adapter;
2888 int ret = 0;
2889 int i;
2890
508d2b5d 2891 struct hcp_modify_qp_cb0 *cb0;
2c69448b
JBT		 2892 u64 hret;
2893 u64 dummy64 = 0;
2894 u16 dummy16 = 0;
2895
3faf2693 2896 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
2c69448b
JBT		 2897 if (!cb0) {
2898 ret = -ENOMEM;
2899 goto out;
2900 }
2901
2902 for (i = 0; i < (port->num_def_qps + port->num_add_tx_qps); i++) {
2903 struct ehea_port_res *pr = &port->port_res[i];
2904 struct ehea_qp *qp = pr->qp;
2905
2906 ret = ehea_gen_smrs(pr);
2907 if (ret) {
cfa969e3 2908 ehea_error("creation of shared memory regions failed");
2c69448b
JBT		 2909 goto out;
2910 }
2911
2912 ehea_update_rqs(qp, pr);
2913
2914 /* Enable queue pair */
2915 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2916 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2917 cb0);
2918 if (hret != H_SUCCESS) {
cfa969e3 2919 ehea_error("query_ehea_qp failed (1)");
2c69448b
JBT		 2920 goto out;
2921 }
2922
2923 cb0->qp_ctl_reg = (cb0->qp_ctl_reg & H_QP_CR_RES_STATE) << 8;
2924 cb0->qp_ctl_reg |= H_QP_CR_ENABLED;
2925
2926 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2927 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG,
2928 1), cb0, &dummy64,
2929 &dummy64, &dummy16, &dummy16);
2930 if (hret != H_SUCCESS) {
cfa969e3 2931 ehea_error("modify_ehea_qp failed (1)");
2c69448b
JBT		 2932 goto out;
2933 }
2934
2935 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2936 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2937 cb0);
2938 if (hret != H_SUCCESS) {
cfa969e3 2939 ehea_error("query_ehea_qp failed (2)");
2c69448b
JBT		 2940 goto out;
2941 }
2942
2943 /* refill entire queue */
2944 ehea_refill_rq1(pr, pr->rq1_skba.index, 0);
2945 ehea_refill_rq2(pr, 0);
2946 ehea_refill_rq3(pr, 0);
2947 }
2948out:
3faf2693 2949 free_page((unsigned long)cb0);
2c69448b
JBT		 2950
2951 return ret;
2952}
2953
c4028958 2954static void ehea_reset_port(struct work_struct *work)
7a291083
JBT		 2955{
2956 int ret;
c4028958
DH		 2957 struct ehea_port *port =
2958 container_of(work, struct ehea_port, reset_task);
2959 struct net_device *dev = port->netdev;
7a291083 2960
099473c1 2961 mutex_lock(&dlpar_mem_lock);
7a291083 2962 port->resets++;
a5af6ad3 2963 mutex_lock(&port->port_lock);
7a291083 2964 netif_stop_queue(dev);
bea3348e
SH		 2965
2966 port_napi_disable(port);
7a291083 2967
44c82152 2968 ehea_down(dev);
7a291083
JBT		 2969
2970 ret = ehea_up(dev);
44c82152 2971 if (ret)
7a291083 2972 goto out;
7a291083 2973
2c69448b
JBT		 2974 ehea_set_multicast_list(dev);
2975
cfa969e3
DM		 2976 if (netif_msg_timer(port))
2977 ehea_info("Device %s resetted successfully", dev->name);
7a291083 2978
bea3348e
SH		 2979 port_napi_enable(port);
2980
7a291083
JBT		 2981 netif_wake_queue(dev);
2982out:
a5af6ad3 2983 mutex_unlock(&port->port_lock);
099473c1 2984 mutex_unlock(&dlpar_mem_lock);
7a291083
JBT		 2985}
2986
44c82152
TK		 2987static void ehea_rereg_mrs(struct work_struct *work)
2988{
2989 int ret, i;
2990 struct ehea_adapter *adapter;
2991
cfa969e3 2992 ehea_info("LPAR memory changed - re-initializing driver");
44c82152
TK		 2993
2994 list_for_each_entry(adapter, &adapter_list, list)
2995 if (adapter->active_ports) {
2996 /* Shutdown all ports */
2997 for (i = 0; i < EHEA_MAX_PORTS; i++) {
2998 struct ehea_port *port = adapter->port[i];
a5af6ad3 2999 struct net_device *dev;
44c82152 3000
a5af6ad3
DW		 3001 if (!port)
3002 continue;
44c82152 3003
a5af6ad3
DW		 3004 dev = port->netdev;
3005
3006 if (dev->flags & IFF_UP) {
3007 mutex_lock(&port->port_lock);
3008 netif_stop_queue(dev);
df39e8ba 3009 ehea_flush_sq(port);
a5af6ad3
DW		 3010 ret = ehea_stop_qps(dev);
3011 if (ret) {
3012 mutex_unlock(&port->port_lock);
3013 goto out;
44c82152 3014 }
a5af6ad3
DW		 3015 port_napi_disable(port);
3016 mutex_unlock(&port->port_lock);
44c82152 3017 }
2928db4c 3018 reset_sq_restart_flag(port);
44c82152
TK		 3019 }
3020
3021 /* Unregister old memory region */
3022 ret = ehea_rem_mr(&adapter->mr);
3023 if (ret) {
cfa969e3
DM		 3024 ehea_error("unregister MR failed - driver"
3025 " inoperable!");
44c82152
TK		 3026 goto out;
3027 }
3028 }
3029
44c82152
TK		 3030 clear_bit(__EHEA_STOP_XFER, &ehea_driver_flags);
3031
3032 list_for_each_entry(adapter, &adapter_list, list)
3033 if (adapter->active_ports) {
3034 /* Register new memory region */
3035 ret = ehea_reg_kernel_mr(adapter, &adapter->mr);
3036 if (ret) {
cfa969e3
DM		 3037 ehea_error("register MR failed - driver"
3038 " inoperable!");
44c82152
TK		 3039 goto out;
3040 }
3041
3042 /* Restart all ports */
3043 for (i = 0; i < EHEA_MAX_PORTS; i++) {
3044 struct ehea_port *port = adapter->port[i];
3045
3046 if (port) {
3047 struct net_device *dev = port->netdev;
3048
3049 if (dev->flags & IFF_UP) {
a5af6ad3 3050 mutex_lock(&port->port_lock);
2c69448b
JBT		 3051 port_napi_enable(port);
3052 ret = ehea_restart_qps(dev);
2928db4c 3053 check_sqs(port);
2c69448b 3054 if (!ret)
44c82152 3055 netif_wake_queue(dev);
a5af6ad3 3056 mutex_unlock(&port->port_lock);
44c82152
TK		 3057 }
3058 }
3059 }
3060 }
cfa969e3 3061 ehea_info("re-initializing driver complete");
44c82152
TK		 3062out:
3063 return;
3064}
3065
7a291083
JBT		 3066static void ehea_tx_watchdog(struct net_device *dev)
3067{
3068 struct ehea_port *port = netdev_priv(dev);
3069
2c69448b
JBT		 3070 if (netif_carrier_ok(dev) &&
3071 !test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))
2f69ae01 3072 ehea_schedule_port_reset(port);
7a291083
JBT		 3073}
3074
3075int ehea_sense_adapter_attr(struct ehea_adapter *adapter)
3076{
3077 struct hcp_query_ehea *cb;
3078 u64 hret;
3079 int ret;
3080
3faf2693 3081 cb = (void *)get_zeroed_page(GFP_KERNEL);
7a291083
JBT		 3082 if (!cb) {
3083 ret = -ENOMEM;
3084 goto out;
3085 }
3086
3087 hret = ehea_h_query_ehea(adapter->handle, cb);
3088
3089 if (hret != H_SUCCESS) {
3090 ret = -EIO;
3091 goto out_herr;
3092 }
3093
7a291083
JBT		 3094 adapter->max_mc_mac = cb->max_mc_mac - 1;
3095 ret = 0;
3096
3097out_herr:
3faf2693 3098 free_page((unsigned long)cb);
7a291083
JBT		 3099out:
3100 return ret;
3101}
3102
1acf2318 3103int ehea_get_jumboframe_status(struct ehea_port *port, int *jumbo)
7a291083 3104{
7a291083 3105 struct hcp_ehea_port_cb4 *cb4;
1acf2318
JBT		 3106 u64 hret;
3107 int ret = 0;
7a291083 3108
1acf2318 3109 *jumbo = 0;
7a291083 3110
1acf2318 3111 /* (Try to) enable *jumbo frames */
3faf2693 3112 cb4 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083 3113 if (!cb4) {
cfa969e3 3114 ehea_error("no mem for cb4");
1acf2318
JBT		 3115 ret = -ENOMEM;
3116 goto out;
7a291083 3117 } else {
1acf2318 3118 hret = ehea_h_query_ehea_port(port->adapter->handle,
9c750b7d
TK		 3119 port->logical_port_id,
3120 H_PORT_CB4,
3121 H_PORT_CB4_JUMBO, cb4);
9c750b7d
TK		 3122 if (hret == H_SUCCESS) {
3123 if (cb4->jumbo_frame)
1acf2318 3124 *jumbo = 1;
9c750b7d
TK		 3125 else {
3126 cb4->jumbo_frame = 1;
1acf2318
JBT		 3127 hret = ehea_h_modify_ehea_port(port->adapter->
3128 handle,
9c750b7d 3129 port->
1acf2318 3130 logical_port_id,
9c750b7d
TK		 3131 H_PORT_CB4,
3132 H_PORT_CB4_JUMBO,
3133 cb4);
3134 if (hret == H_SUCCESS)
1acf2318 3135 *jumbo = 1;
9c750b7d 3136 }
1acf2318
JBT		 3137 } else
3138 ret = -EINVAL;
3139
3faf2693 3140 free_page((unsigned long)cb4);
7a291083 3141 }
1acf2318
JBT		 3142out:
3143 return ret;
3144}
3145
3146static ssize_t ehea_show_port_id(struct device *dev,
3147 struct device_attribute *attr, char *buf)
3148{
3149 struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev);
a8e34fda 3150 return sprintf(buf, "%d", port->logical_port_id);
1acf2318
JBT		 3151}
3152
3153static DEVICE_ATTR(log_port_id, S_IRUSR | S_IRGRP | S_IROTH, ehea_show_port_id,
3154 NULL);
3155
3156static void __devinit logical_port_release(struct device *dev)
3157{
3158 struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev);
61c7a080 3159 of_node_put(port->ofdev.dev.of_node);
1acf2318
JBT		 3160}
3161
3162static struct device *ehea_register_port(struct ehea_port *port,
3163 struct device_node *dn)
3164{
3165 int ret;
3166
61c7a080 3167 port->ofdev.dev.of_node = of_node_get(dn);
6b08f3ae 3168 port->ofdev.dev.parent = &port->adapter->ofdev->dev;
d1dea38d 3169 port->ofdev.dev.bus = &ibmebus_bus_type;
1acf2318 3170
db1d7bf7 3171 dev_set_name(&port->ofdev.dev, "port%d", port_name_cnt++);
1acf2318
JBT		 3172 port->ofdev.dev.release = logical_port_release;
3173
3174 ret = of_device_register(&port->ofdev);
3175 if (ret) {
cfa969e3 3176 ehea_error("failed to register device. ret=%d", ret);
1acf2318
JBT		 3177 goto out;
3178 }
3179
3180 ret = device_create_file(&port->ofdev.dev, &dev_attr_log_port_id);
d1d25aab 3181 if (ret) {
cfa969e3 3182 ehea_error("failed to register attributes, ret=%d", ret);
1acf2318
JBT		 3183 goto out_unreg_of_dev;
3184 }
e542aa6b 3185
1acf2318
JBT		 3186 return &port->ofdev.dev;
3187
3188out_unreg_of_dev:
3189 of_device_unregister(&port->ofdev);
3190out:
3191 return NULL;
3192}
3193
3194static void ehea_unregister_port(struct ehea_port *port)
3195{
3196 device_remove_file(&port->ofdev.dev, &dev_attr_log_port_id);
3197 of_device_unregister(&port->ofdev);
3198}
3199
086c1b2c
TK		 3200static const struct net_device_ops ehea_netdev_ops = {
3201 .ndo_open = ehea_open,
3202 .ndo_stop = ehea_stop,
3203 .ndo_start_xmit = ehea_start_xmit,
3204#ifdef CONFIG_NET_POLL_CONTROLLER
3205 .ndo_poll_controller = ehea_netpoll,
3206#endif
3207 .ndo_get_stats = ehea_get_stats,
3208 .ndo_set_mac_address = ehea_set_mac_addr,
240c102d 3209 .ndo_validate_addr = eth_validate_addr,
086c1b2c
TK		 3210 .ndo_set_multicast_list = ehea_set_multicast_list,
3211 .ndo_change_mtu = ehea_change_mtu,
3212 .ndo_vlan_rx_register = ehea_vlan_rx_register,
3213 .ndo_vlan_rx_add_vid = ehea_vlan_rx_add_vid,
32e8f9a8
AB		 3214 .ndo_vlan_rx_kill_vid = ehea_vlan_rx_kill_vid,
3215 .ndo_tx_timeout = ehea_tx_watchdog,
086c1b2c
TK		 3216};
3217
1acf2318
JBT		 3218struct ehea_port *ehea_setup_single_port(struct ehea_adapter *adapter,
3219 u32 logical_port_id,
3220 struct device_node *dn)
3221{
3222 int ret;
3223 struct net_device *dev;
3224 struct ehea_port *port;
3225 struct device *port_dev;
3226 int jumbo;
3227
3228 /* allocate memory for the port structures */
3229 dev = alloc_etherdev(sizeof(struct ehea_port));
3230
3231 if (!dev) {
cfa969e3 3232 ehea_error("no mem for net_device");
1acf2318
JBT		 3233 ret = -ENOMEM;
3234 goto out_err;
3235 }
3236
3237 port = netdev_priv(dev);
3238
a5af6ad3 3239 mutex_init(&port->port_lock);
1acf2318
JBT		 3240 port->state = EHEA_PORT_DOWN;
3241 port->sig_comp_iv = sq_entries / 10;
3242
3243 port->adapter = adapter;
3244 port->netdev = dev;
3245 port->logical_port_id = logical_port_id;
3246
3247 port->msg_enable = netif_msg_init(msg_level, EHEA_MSG_DEFAULT);
3248
3249 port->mc_list = kzalloc(sizeof(struct ehea_mc_list), GFP_KERNEL);
3250 if (!port->mc_list) {
3251 ret = -ENOMEM;
3252 goto out_free_ethdev;
3253 }
3254
3255 INIT_LIST_HEAD(&port->mc_list->list);
3256
3257 ret = ehea_sense_port_attr(port);
3258 if (ret)
3259 goto out_free_mc_list;
3260
3261 port_dev = ehea_register_port(port, dn);
3262 if (!port_dev)
3263 goto out_free_mc_list;
3264
3265 SET_NETDEV_DEV(dev, port_dev);
7a291083
JBT		 3266
3267 /* initialize net_device structure */
7a291083
JBT		 3268 memcpy(dev->dev_addr, &port->mac_addr, ETH_ALEN);
3269
086c1b2c
TK		 3270 dev->netdev_ops = &ehea_netdev_ops;
3271 ehea_set_ethtool_ops(dev);
3272
7a291083 3273 dev->features = NETIF_F_SG | NETIF_F_FRAGLIST | NETIF_F_TSO
dc01c447 3274 | NETIF_F_HIGHDMA | NETIF_F_IP_CSUM | NETIF_F_HW_VLAN_TX
7a291083
JBT		 3275 | NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_FILTER
3276 | NETIF_F_LLTX;
7a291083
JBT		 3277 dev->watchdog_timeo = EHEA_WATCH_DOG_TIMEOUT;
3278
c7757fdb
BL		 3279 if (use_lro)
3280 dev->features |= NETIF_F_LRO;
3281
c4028958 3282 INIT_WORK(&port->reset_task, ehea_reset_port);
7a291083
JBT		 3283
3284 ret = register_netdev(dev);
3285 if (ret) {
cfa969e3 3286 ehea_error("register_netdev failed. ret=%d", ret);
21eee2dd 3287 goto out_unreg_port;
7a291083
JBT		 3288 }
3289
d4dc4ec9
JBT		 3290 port->lro_max_aggr = lro_max_aggr;
3291
1acf2318 3292 ret = ehea_get_jumboframe_status(port, &jumbo);
e542aa6b 3293 if (ret)
cfa969e3
DM		 3294 ehea_error("failed determining jumbo frame status for %s",
3295 port->netdev->name);
1acf2318 3296
cfa969e3
DM		 3297 ehea_info("%s: Jumbo frames are %sabled", dev->name,
3298 jumbo == 1 ? "en" : "dis");
9c750b7d 3299
44c82152
TK		 3300 adapter->active_ports++;
3301
1acf2318 3302 return port;
7a291083 3303
1acf2318
JBT		 3304out_unreg_port:
3305 ehea_unregister_port(port);
3306
3307out_free_mc_list:
7a291083 3308 kfree(port->mc_list);
1acf2318
JBT		 3309
3310out_free_ethdev:
3311 free_netdev(dev);
3312
3313out_err:
cfa969e3
DM		 3314 ehea_error("setting up logical port with id=%d failed, ret=%d",
3315 logical_port_id, ret);
1acf2318
JBT		 3316 return NULL;
3317}
3318
3319static void ehea_shutdown_single_port(struct ehea_port *port)
3320{
7fb1c2ac 3321 struct ehea_adapter *adapter = port->adapter;
1acf2318
JBT		 3322 unregister_netdev(port->netdev);
3323 ehea_unregister_port(port);
3324 kfree(port->mc_list);
3325 free_netdev(port->netdev);
7fb1c2ac 3326 adapter->active_ports--;
7a291083
JBT		 3327}
3328
3329static int ehea_setup_ports(struct ehea_adapter *adapter)
3330{
1acf2318
JBT		 3331 struct device_node *lhea_dn;
3332 struct device_node *eth_dn = NULL;
d1d25aab 3333
9f9a3b8a 3334 const u32 *dn_log_port_id;
1acf2318
JBT		 3335 int i = 0;
3336
61c7a080 3337 lhea_dn = adapter->ofdev->dev.of_node;
1eef4e04 3338 while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) {
e542aa6b 3339
40cd3a45 3340 dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no",
d1d25aab 3341 NULL);
1acf2318 3342 if (!dn_log_port_id) {
cfa969e3
DM		 3343 ehea_error("bad device node: eth_dn name=%s",
3344 eth_dn->full_name);
1acf2318
JBT		 3345 continue;
3346 }
7a291083 3347
1211bb6d 3348 if (ehea_add_adapter_mr(adapter)) {
cfa969e3 3349 ehea_error("creating MR failed");
1211bb6d
TK		 3350 of_node_put(eth_dn);
3351 return -EIO;
3352 }
3353
1acf2318
JBT		 3354 adapter->port[i] = ehea_setup_single_port(adapter,
3355 *dn_log_port_id,
3356 eth_dn);
7a291083 3357 if (adapter->port[i])
cfa969e3
DM		 3358 ehea_info("%s -> logical port id #%d",
3359 adapter->port[i]->netdev->name,
3360 *dn_log_port_id);
1211bb6d
TK		 3361 else
3362 ehea_remove_adapter_mr(adapter);
3363
1acf2318 3364 i++;
ee289b64 3365 }
1211bb6d 3366 return 0;
1acf2318
JBT		 3367}
3368
e542aa6b
JBT		 3369static struct device_node *ehea_get_eth_dn(struct ehea_adapter *adapter,
3370 u32 logical_port_id)
1acf2318
JBT		 3371{
3372 struct device_node *lhea_dn;
3373 struct device_node *eth_dn = NULL;
9f9a3b8a 3374 const u32 *dn_log_port_id;
1acf2318 3375
61c7a080 3376 lhea_dn = adapter->ofdev->dev.of_node;
1eef4e04 3377 while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) {
e542aa6b 3378
40cd3a45 3379 dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no",
d1d25aab 3380 NULL);
1acf2318
JBT		 3381 if (dn_log_port_id)
3382 if (*dn_log_port_id == logical_port_id)
3383 return eth_dn;
ee289b64 3384 }
1acf2318
JBT		 3385
3386 return NULL;
3387}
3388
3389static ssize_t ehea_probe_port(struct device *dev,
3390 struct device_attribute *attr,
3391 const char *buf, size_t count)
3392{
c7ae011d 3393 struct ehea_adapter *adapter = dev_get_drvdata(dev);
1acf2318
JBT		 3394 struct ehea_port *port;
3395 struct device_node *eth_dn = NULL;
3396 int i;
3397
3398 u32 logical_port_id;
3399
a8e34fda 3400 sscanf(buf, "%d", &logical_port_id);
1acf2318
JBT		 3401
3402 port = ehea_get_port(adapter, logical_port_id);
3403
3404 if (port) {
cfa969e3
DM		 3405 ehea_info("adding port with logical port id=%d failed. port "
3406 "already configured as %s.", logical_port_id,
3407 port->netdev->name);
1acf2318 3408 return -EINVAL;
7a291083 3409 }
e542aa6b 3410
1acf2318 3411 eth_dn = ehea_get_eth_dn(adapter, logical_port_id);
7a291083 3412
1acf2318 3413 if (!eth_dn) {
cfa969e3 3414 ehea_info("no logical port with id %d found", logical_port_id);
1acf2318
JBT		 3415 return -EINVAL;
3416 }
e542aa6b 3417
1211bb6d 3418 if (ehea_add_adapter_mr(adapter)) {
cfa969e3 3419 ehea_error("creating MR failed");
1211bb6d
TK		 3420 return -EIO;
3421 }
3422
1acf2318 3423 port = ehea_setup_single_port(adapter, logical_port_id, eth_dn);
7a291083 3424
1eef4e04
JBT		 3425 of_node_put(eth_dn);
3426
1acf2318 3427 if (port) {
508d2b5d 3428 for (i = 0; i < EHEA_MAX_PORTS; i++)
1acf2318
JBT		 3429 if (!adapter->port[i]) {
3430 adapter->port[i] = port;
3431 break;
3432 }
7a291083 3433
cfa969e3
DM		 3434 ehea_info("added %s (logical port id=%d)", port->netdev->name,
3435 logical_port_id);
1211bb6d
TK		 3436 } else {
3437 ehea_remove_adapter_mr(adapter);
e542aa6b 3438 return -EIO;
1211bb6d 3439 }
7a291083 3440
1acf2318
JBT		 3441 return (ssize_t) count;
3442}
3443
3444static ssize_t ehea_remove_port(struct device *dev,
3445 struct device_attribute *attr,
3446 const char *buf, size_t count)
3447{
c7ae011d 3448 struct ehea_adapter *adapter = dev_get_drvdata(dev);
1acf2318
JBT		 3449 struct ehea_port *port;
3450 int i;
3451 u32 logical_port_id;
3452
a8e34fda 3453 sscanf(buf, "%d", &logical_port_id);
1acf2318
JBT		 3454
3455 port = ehea_get_port(adapter, logical_port_id);
3456
3457 if (port) {
cfa969e3
DM		 3458 ehea_info("removed %s (logical port id=%d)", port->netdev->name,
3459 logical_port_id);
1acf2318
JBT		 3460
3461 ehea_shutdown_single_port(port);
3462
508d2b5d 3463 for (i = 0; i < EHEA_MAX_PORTS; i++)
1acf2318
JBT		 3464 if (adapter->port[i] == port) {
3465 adapter->port[i] = NULL;
3466 break;
3467 }
3468 } else {
cfa969e3
DM		 3469 ehea_error("removing port with logical port id=%d failed. port "
3470 "not configured.", logical_port_id);
1acf2318
JBT		 3471 return -EINVAL;
3472 }
3473
1211bb6d
TK		 3474 ehea_remove_adapter_mr(adapter);
3475
1acf2318
JBT		 3476 return (ssize_t) count;
3477}
3478
3479static DEVICE_ATTR(probe_port, S_IWUSR, NULL, ehea_probe_port);
3480static DEVICE_ATTR(remove_port, S_IWUSR, NULL, ehea_remove_port);
3481
2dc11581 3482int ehea_create_device_sysfs(struct platform_device *dev)
1acf2318 3483{
6b08f3ae 3484 int ret = device_create_file(&dev->dev, &dev_attr_probe_port);
1acf2318
JBT		 3485 if (ret)
3486 goto out;
3487
6b08f3ae 3488 ret = device_create_file(&dev->dev, &dev_attr_remove_port);
1acf2318 3489out:
7a291083
JBT		 3490 return ret;
3491}
3492
2dc11581 3493void ehea_remove_device_sysfs(struct platform_device *dev)
1acf2318 3494{
6b08f3ae
JF		 3495 device_remove_file(&dev->dev, &dev_attr_probe_port);
3496 device_remove_file(&dev->dev, &dev_attr_remove_port);
1acf2318
JBT		 3497}
3498
2dc11581 3499static int __devinit ehea_probe_adapter(struct platform_device *dev,
1acf2318 3500 const struct of_device_id *id)
7a291083
JBT		 3501{
3502 struct ehea_adapter *adapter;
9f9a3b8a 3503 const u64 *adapter_handle;
7a291083
JBT		 3504 int ret;
3505
61c7a080 3506 if (!dev || !dev->dev.of_node) {
cfa969e3 3507 ehea_error("Invalid ibmebus device probed");
1eef4e04
JBT		 3508 return -EINVAL;
3509 }
3510
7a291083
JBT		 3511 adapter = kzalloc(sizeof(*adapter), GFP_KERNEL);
3512 if (!adapter) {
3513 ret = -ENOMEM;
6b08f3ae 3514 dev_err(&dev->dev, "no mem for ehea_adapter\n");
7a291083
JBT		 3515 goto out;
3516 }
3517
44c82152
TK		 3518 list_add(&adapter->list, &adapter_list);
3519
6b08f3ae 3520 adapter->ofdev = dev;
1acf2318 3521
61c7a080 3522 adapter_handle = of_get_property(dev->dev.of_node, "ibm,hea-handle",
d1d25aab 3523 NULL);
061bf3cd
TK		 3524 if (adapter_handle)
3525 adapter->handle = *adapter_handle;
3526
3527 if (!adapter->handle) {
6b08f3ae 3528 dev_err(&dev->dev, "failed getting handle for adapter"
61c7a080 3529 " '%s'\n", dev->dev.of_node->full_name);
7a291083
JBT		 3530 ret = -ENODEV;
3531 goto out_free_ad;
3532 }
3533
7a291083
JBT		 3534 adapter->pd = EHEA_PD_ID;
3535
c7ae011d 3536 dev_set_drvdata(&dev->dev, adapter);
7a291083 3537
7a291083
JBT		 3538
3539 /* initialize adapter and ports */
3540 /* get adapter properties */
3541 ret = ehea_sense_adapter_attr(adapter);
3542 if (ret) {
898eb71c 3543 dev_err(&dev->dev, "sense_adapter_attr failed: %d\n", ret);
1211bb6d 3544 goto out_free_ad;
7a291083 3545 }
7a291083
JBT		 3546
3547 adapter->neq = ehea_create_eq(adapter,
3548 EHEA_NEQ, EHEA_MAX_ENTRIES_EQ, 1);
3549 if (!adapter->neq) {
1eef4e04 3550 ret = -EIO;
898eb71c 3551 dev_err(&dev->dev, "NEQ creation failed\n");
1211bb6d 3552 goto out_free_ad;
7a291083
JBT		 3553 }
3554
3555 tasklet_init(&adapter->neq_tasklet, ehea_neq_tasklet,
3556 (unsigned long)adapter);
3557
6b08f3ae 3558 ret = ibmebus_request_irq(adapter->neq->attr.ist1,
38515e90 3559 ehea_interrupt_neq, IRQF_DISABLED,
7a291083
JBT		 3560 "ehea_neq", adapter);
3561 if (ret) {
898eb71c 3562 dev_err(&dev->dev, "requesting NEQ IRQ failed\n");
7a291083
JBT		 3563 goto out_kill_eq;
3564 }
3565
1eef4e04
JBT		 3566 ret = ehea_create_device_sysfs(dev);
3567 if (ret)
3bf76b81 3568 goto out_free_irq;
1acf2318 3569
7a291083
JBT		 3570 ret = ehea_setup_ports(adapter);
3571 if (ret) {
898eb71c 3572 dev_err(&dev->dev, "setup_ports failed\n");
1acf2318 3573 goto out_rem_dev_sysfs;
7a291083
JBT		 3574 }
3575
3576 ret = 0;
3577 goto out;
3578
1acf2318
JBT		 3579out_rem_dev_sysfs:
3580 ehea_remove_device_sysfs(dev);
3581
7a291083 3582out_free_irq:
6b08f3ae 3583 ibmebus_free_irq(adapter->neq->attr.ist1, adapter);
7a291083
JBT		 3584
3585out_kill_eq:
3586 ehea_destroy_eq(adapter->neq);
3587
7a291083 3588out_free_ad:
51621fbd 3589 list_del(&adapter->list);
7a291083 3590 kfree(adapter);
21eee2dd 3591
7a291083 3592out:
21eee2dd 3593 ehea_update_firmware_handles();
52e21b1b 3594
7a291083
JBT		 3595 return ret;
3596}
3597
2dc11581 3598static int __devexit ehea_remove(struct platform_device *dev)
7a291083 3599{
c7ae011d 3600 struct ehea_adapter *adapter = dev_get_drvdata(&dev->dev);
7a291083
JBT		 3601 int i;
3602
1acf2318 3603 for (i = 0; i < EHEA_MAX_PORTS; i++)
7a291083
JBT		 3604 if (adapter->port[i]) {
3605 ehea_shutdown_single_port(adapter->port[i]);
3606 adapter->port[i] = NULL;
3607 }
1acf2318
JBT		 3608
3609 ehea_remove_device_sysfs(dev);
3610
3bf76b81 3611 flush_scheduled_work();
7a291083 3612
6b08f3ae 3613 ibmebus_free_irq(adapter->neq->attr.ist1, adapter);
d4150a27 3614 tasklet_kill(&adapter->neq_tasklet);
7a291083
JBT		 3615
3616 ehea_destroy_eq(adapter->neq);
1211bb6d 3617 ehea_remove_adapter_mr(adapter);
44c82152 3618 list_del(&adapter->list);
7a291083 3619 kfree(adapter);
44c82152 3620
21eee2dd 3621 ehea_update_firmware_handles();
21eee2dd 3622
7a291083
JBT		 3623 return 0;
3624}
3625
21eee2dd
TK		 3626void ehea_crash_handler(void)
3627{
3628 int i;
3629
3630 if (ehea_fw_handles.arr)
3631 for (i = 0; i < ehea_fw_handles.num_entries; i++)
3632 ehea_h_free_resource(ehea_fw_handles.arr[i].adh,
3633 ehea_fw_handles.arr[i].fwh,
3634 FORCE_FREE);
3635
3636 if (ehea_bcmc_regs.arr)
3637 for (i = 0; i < ehea_bcmc_regs.num_entries; i++)
3638 ehea_h_reg_dereg_bcmc(ehea_bcmc_regs.arr[i].adh,
3639 ehea_bcmc_regs.arr[i].port_id,
3640 ehea_bcmc_regs.arr[i].reg_type,
3641 ehea_bcmc_regs.arr[i].macaddr,
3642 0, H_DEREG_BCMC);
3643}
3644
48cfb14f
HH		 3645static int ehea_mem_notifier(struct notifier_block *nb,
3646 unsigned long action, void *data)
3647{
a7c561f2 3648 int ret = NOTIFY_BAD;
d4f12daf 3649 struct memory_notify *arg = data;
a7c561f2 3650
099473c1 3651 mutex_lock(&dlpar_mem_lock);
a7c561f2 3652
48cfb14f 3653 switch (action) {
d4f12daf 3654 case MEM_CANCEL_OFFLINE:
cfa969e3 3655 ehea_info("memory offlining canceled");
d4f12daf
HH		 3656 /* Readd canceled memory block */
3657 case MEM_ONLINE:
cfa969e3 3658 ehea_info("memory is going online");
3876732c 3659 set_bit(__EHEA_STOP_XFER, &ehea_driver_flags);
d4f12daf 3660 if (ehea_add_sect_bmap(arg->start_pfn, arg->nr_pages))
a7c561f2 3661 goto out_unlock;
d4f12daf
HH		 3662 ehea_rereg_mrs(NULL);
3663 break;
3664 case MEM_GOING_OFFLINE:
cfa969e3 3665 ehea_info("memory is going offline");
3876732c 3666 set_bit(__EHEA_STOP_XFER, &ehea_driver_flags);
d4f12daf 3667 if (ehea_rem_sect_bmap(arg->start_pfn, arg->nr_pages))
a7c561f2 3668 goto out_unlock;
48cfb14f
HH		 3669 ehea_rereg_mrs(NULL);
3670 break;
3671 default:
3672 break;
3673 }
52e21b1b
JBT		 3674
3675 ehea_update_firmware_handles();
a7c561f2 3676 ret = NOTIFY_OK;
52e21b1b 3677
a7c561f2
TK		 3678out_unlock:
3679 mutex_unlock(&dlpar_mem_lock);
a7c561f2 3680 return ret;
48cfb14f
HH		 3681}
3682
3683static struct notifier_block ehea_mem_nb = {
3684 .notifier_call = ehea_mem_notifier,
3685};
3686
2a6f4e49
JBT		 3687static int ehea_reboot_notifier(struct notifier_block *nb,
3688 unsigned long action, void *unused)
3689{
3690 if (action == SYS_RESTART) {
cfa969e3 3691 ehea_info("Reboot: freeing all eHEA resources");
2a6f4e49
JBT		 3692 ibmebus_unregister_driver(&ehea_driver);
3693 }
3694 return NOTIFY_DONE;
3695}
3696
3697static struct notifier_block ehea_reboot_nb = {
508d2b5d 3698 .notifier_call = ehea_reboot_notifier,
2a6f4e49
JBT		 3699};
3700
7a291083
JBT		 3701static int check_module_parm(void)
3702{
3703 int ret = 0;
3704
3705 if ((rq1_entries < EHEA_MIN_ENTRIES_QP) ||
3706 (rq1_entries > EHEA_MAX_ENTRIES_RQ1)) {
cfa969e3 3707 ehea_info("Bad parameter: rq1_entries");
7a291083
JBT		 3708 ret = -EINVAL;
3709 }
3710 if ((rq2_entries < EHEA_MIN_ENTRIES_QP) ||
3711 (rq2_entries > EHEA_MAX_ENTRIES_RQ2)) {
cfa969e3 3712 ehea_info("Bad parameter: rq2_entries");
7a291083
JBT		 3713 ret = -EINVAL;
3714 }
3715 if ((rq3_entries < EHEA_MIN_ENTRIES_QP) ||
3716 (rq3_entries > EHEA_MAX_ENTRIES_RQ3)) {
cfa969e3 3717 ehea_info("Bad parameter: rq3_entries");
7a291083
JBT		 3718 ret = -EINVAL;
3719 }
3720 if ((sq_entries < EHEA_MIN_ENTRIES_QP) ||
3721 (sq_entries > EHEA_MAX_ENTRIES_SQ)) {
cfa969e3 3722 ehea_info("Bad parameter: sq_entries");
7a291083
JBT		 3723 ret = -EINVAL;
3724 }
3725
3726 return ret;
3727}
3728
4c3ca4da
JBT		 3729static ssize_t ehea_show_capabilities(struct device_driver *drv,
3730 char *buf)
3731{
3732 return sprintf(buf, "%d", EHEA_CAPABILITIES);
3733}
3734
3735static DRIVER_ATTR(capabilities, S_IRUSR | S_IRGRP | S_IROTH,
3736 ehea_show_capabilities, NULL);
3737
7a291083
JBT		 3738int __init ehea_module_init(void)
3739{
3740 int ret;
3741
cfa969e3
DM		 3742 printk(KERN_INFO "IBM eHEA ethernet device driver (Release %s)\n",
3743 DRV_VERSION);
7a291083 3744
44c82152
TK		 3745
3746 INIT_WORK(&ehea_rereg_mr_task, ehea_rereg_mrs);
21eee2dd
TK		 3747 memset(&ehea_fw_handles, 0, sizeof(ehea_fw_handles));
3748 memset(&ehea_bcmc_regs, 0, sizeof(ehea_bcmc_regs));
3749
9f71a568 3750 mutex_init(&ehea_fw_handles.lock);
5c2cec14 3751 spin_lock_init(&ehea_bcmc_regs.lock);
44c82152 3752
7a291083
JBT		 3753 ret = check_module_parm();
3754 if (ret)
3755 goto out;
44c82152
TK		 3756
3757 ret = ehea_create_busmap();
3758 if (ret)
3759 goto out;
3760
21eee2dd
TK		 3761 ret = register_reboot_notifier(&ehea_reboot_nb);
3762 if (ret)
cfa969e3 3763 ehea_info("failed registering reboot notifier");
21eee2dd 3764
48cfb14f
HH		 3765 ret = register_memory_notifier(&ehea_mem_nb);
3766 if (ret)
cfa969e3 3767 ehea_info("failed registering memory remove notifier");
48cfb14f 3768
c061b18d 3769 ret = crash_shutdown_register(ehea_crash_handler);
21eee2dd 3770 if (ret)
cfa969e3 3771 ehea_info("failed registering crash handler");
2a6f4e49 3772
7a291083 3773 ret = ibmebus_register_driver(&ehea_driver);
4c3ca4da 3774 if (ret) {
cfa969e3 3775 ehea_error("failed registering eHEA device driver on ebus");
21eee2dd 3776 goto out2;
4c3ca4da
JBT		 3777 }
3778
3779 ret = driver_create_file(&ehea_driver.driver,
3780 &driver_attr_capabilities);
3781 if (ret) {
cfa969e3
DM		 3782 ehea_error("failed to register capabilities attribute, ret=%d",
3783 ret);
21eee2dd 3784 goto out3;
4c3ca4da 3785 }
7a291083 3786
21eee2dd
TK		 3787 return ret;
3788
3789out3:
3790 ibmebus_unregister_driver(&ehea_driver);
3791out2:
48cfb14f 3792 unregister_memory_notifier(&ehea_mem_nb);
21eee2dd 3793 unregister_reboot_notifier(&ehea_reboot_nb);
c061b18d 3794 crash_shutdown_unregister(ehea_crash_handler);
7a291083
JBT		 3795out:
3796 return ret;
3797}
3798
3799static void __exit ehea_module_exit(void)
3800{
21eee2dd
TK		 3801 int ret;
3802
3bf76b81 3803 flush_scheduled_work();
4c3ca4da 3804 driver_remove_file(&ehea_driver.driver, &driver_attr_capabilities);
7a291083 3805 ibmebus_unregister_driver(&ehea_driver);
2a6f4e49 3806 unregister_reboot_notifier(&ehea_reboot_nb);
c061b18d 3807 ret = crash_shutdown_unregister(ehea_crash_handler);
21eee2dd 3808 if (ret)
cfa969e3 3809 ehea_info("failed unregistering crash handler");
48cfb14f 3810 unregister_memory_notifier(&ehea_mem_nb);
21eee2dd
TK		 3811 kfree(ehea_fw_handles.arr);
3812 kfree(ehea_bcmc_regs.arr);
44c82152 3813 ehea_destroy_busmap();
7a291083
JBT		 3814}
3815
3816module_init(ehea_module_init);
3817module_exit(ehea_module_exit);
Linux 6.x block layer and io_uring tree(s)